Adding upstream version 1:0.1.9998svn3589+dfsg.upstream/1%0.1.9998svn3589+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2432 files changed, 767490 insertions, 0 deletions

diff --git a/src/Makefile.kmk b/src/Makefile.kmk
new file mode 100644
index 0000000..a44e555
--- /dev/null
+++ b/src/Makefile.kmk
@@ -0,0 +1,46 @@
+# $Id: Makefile.kmk 3539 2021-12-21 12:21:29Z bird $
+## @file
+# Sub-makefile for the source directory.
+#
+
+#
+# Copyright (c) 2004-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ..
+include $(KBUILD_PATH)/subheader.kmk
+
+include $(PATH_SUB_CURRENT)/lib/Makefile.kmk
+include $(PATH_SUB_CURRENT)/sed/Makefile.kmk
+include $(PATH_SUB_CURRENT)/kmk/Makefile.kmk
+include $(PATH_SUB_CURRENT)/kash/Makefile.kmk
+include $(PATH_SUB_CURRENT)/kDepPre/Makefile.kmk
+include $(PATH_SUB_CURRENT)/kObjCache/Makefile.kmk
+include $(PATH_SUB_CURRENT)/misc/Makefile.kmk
+ifeq ($(KBUILD_TARGET),win)
+ include $(PATH_SUB_CURRENT)/kLibTweaker/Makefile.kmk
+ include $(PATH_SUB_CURRENT)/kDeDup/Makefile.kmk
+ include $(PATH_SUB_CURRENT)/kWorker/Makefile.kmk
+endif
+if1of ($(KBUILD_TARGET), win)
+ include $(PATH_SUB_CURRENT)/grep/Makefile.kmk
+endif
+
+include $(FILE_KBUILD_SUB_FOOTER)
+
diff --git a/src/fastdep/Makefile b/src/fastdep/Makefile
new file mode 100644
index 0000000..91f4af1
--- /dev/null
+++ b/src/fastdep/Makefile
@@ -0,0 +1,121 @@
+# $Id: Makefile 2413 2010-09-11 17:43:04Z bird $
+
+#
+# Odin32 API
+#
+#   Makefile for the Quick-and-Dirty dependency utility. (FastDep)
+#
+#   Copyright (c) 1999-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+#   GPL
+#
+
+
+!ifdef BUILD_SETUP_MAK
+
+
+#
+# Setup config
+#
+ALL_NO_DBGMEM = 1
+PATH_ROOT = ..\..
+!include $(PATH_ROOT)\$(BUILD_SETUP_MAK)
+
+#
+# Target config
+#
+TARGET_NAME = fastdep
+TARGET_MODE = EXE
+TARGET_NEEDED = 1
+TARGET_PUB_BASE = $(PATH_TOOLS)
+
+TARGET_OBJS =\
+$(PATH_TARGET)\fastdep.$(EXT_OBJ)\
+$(PATH_TARGET)\avl.$(EXT_OBJ)\
+
+TARGET_LIBS =\
+$(LIB_OS)\
+$(LIB_C_OBJ)
+
+#
+# Rules config
+#
+RULES_FORWARD =
+!include $(MAKE_INCLUDE_PROCESS)
+
+
+!else
+#
+# Directory macro.
+#
+ODIN32_BIN     = $(ODIN32_TOOLS)
+
+
+#
+# Tell buildenvironment that we're making an VIO .exe.
+# Tell buildenvironment that we like to use static linked CRT.
+# Tell buildenvironment that we should not copy this into /bin.
+#
+EXETARGET = 1
+VIO = 1
+STATIC_CRT = 1
+NO_MAIN_BIN_COPY = 1
+
+
+#
+# include common definitions
+#
+!include ../../makefile.inc
+
+
+#
+# Addjust common definitions
+#
+!if "$(VAC3)" == "1" || "$(VAC36)" == "1"
+CFLAGS   = $(CFLAGS) -W3 -Wall+ppt-ppc-inl-cnv-gnr-vft-gen-uni-ext- \
+!ifdef DEBUG
+        -O+ -Tm-
+!endif
+!endif
+
+
+#
+# Object files. Prefix with OBJDIR and one space before the '\'.
+#
+OBJS = \
+$(OBJDIR)\fastdep.obj \
+$(OBJDIR)\avl.obj
+
+
+#
+# Libraries. One space before the '\'.
+#
+LIBS = \
+$(RTLLIB) \
+os2386.lib
+
+
+#
+# Target name - name of the exe without extention and path.
+#
+TARGET = FastDep
+
+
+#
+# Includes the common rules.
+#
+!include $(ODIN32_POST_INC)
+
+
+#
+# We need all.
+#
+needed: all
+!endif
+
+
+#
+# NT version using Watcom C/C++.
+#
+fastdepnt.exe:
+    wcl386 -bt=nt -l=nt -d2 /hc /"option map" -DOS2FAKE=1 -I$(WATCOM)\h\nt fastdep.c avl.c os2fake-win.c /Fe=$@ kernel32.lib
diff --git a/src/fastdep/Makefile.kmk b/src/fastdep/Makefile.kmk
new file mode 100644
index 0000000..3467df9
--- /dev/null
+++ b/src/fastdep/Makefile.kmk
@@ -0,0 +1,57 @@
+# $Id: $
+## @file
+# Sub-makefile for testing the VAC308 tool / ancient dependency generator.
+#
+
+#
+# Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ../..
+include $(KBUILD_PATH)/subheader.kmk
+
+
+#
+# The base package.
+#
+PROGRAMS += fastdep
+fastdep_TOOL = VAC308
+fastdep_SOURCES = avl.c fastdep.c
+fastdep_INCS = f:/toolkit/v4.52/h
+fastdep_LIBPATH = f:/toolkit/v4.52/lib
+
+
+LIBRARIES += libfastdep
+libfastdep_TOOL = VAC308
+libfastdep_SOURCES = avl.c fastdep.c
+libfastdep_INCS = f:/toolkit/v4.52/h
+
+LIBRARIES += libfastdll
+libfastdll_TOOL = VAC308
+libfastdll_SOURCES = fastdll.def
+
+DLLS += fastdll
+fastdll_TOOL = VAC308
+fastdll_SOURCES = fastdll.def avl.c fastdep.c
+fastdll_INCS = f:/toolkit/v4.52/h
+fastdll_LIBPATH = f:/toolkit/v4.52/lib
+
+
+include $(FILE_KBUILD_SUB_FOOTER)
+
diff --git a/src/fastdep/avl.c b/src/fastdep/avl.c
new file mode 100644
index 0000000..e7995a9
--- /dev/null
+++ b/src/fastdep/avl.c
@@ -0,0 +1,823 @@
+/* $Id: avl.c 2243 2009-01-10 02:24:02Z bird $
+ *
+ * AVL-Tree (lookalike) implementation.
+ *
+ * Copyright (c) 1999 knut st. osmundsen
+ *
+ * GPL
+ *
+ */
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+
+/*
+ * AVL helper macros.
+ */
+#define AVL_HEIGHTOF(pNode) ((unsigned char)((pNode) != NULL ? pNode->uchHeight : 0))
+#define max(a,b) (((a) > (b)) ? (a) : (b))
+
+#ifndef INLINE
+#   if defined(__IBMC__)
+#       define INLINE _Inline
+#   elif defined(__IBMCPP__)
+#       define INLINE inline
+#   elif defined(__WATCOMC__)
+#       define INLINE __inline
+#   elif defined(__WATCOM_CPLUSPLUS__)
+#       define INLINE inline
+#   else
+#       error message("unknown compiler - inline keyword unknown!")
+#   endif
+#endif
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+#include <os2.h>
+#include "avl.h"
+#if defined(RING0) || defined(RING3)
+    #include "dev32.h"
+#else
+    #define SSToDS(a) (a)
+#endif
+#include "string.h"
+
+#if defined(__IBMCPP__) || defined(__IBMC__)
+#include <builtin.h>
+#define assert(a) ((a) ? (void)0 : __interrupt(3) )
+#else
+#include <assert.h>
+#endif
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/*
+ * A stack used to avoid recursive calls...
+ */
+typedef struct _AVLStack
+{
+    unsigned     cEntries;
+    PPAVLNODECORE aEntries[AVL_MAX_HEIGHT];
+} AVLSTACK, *PAVLSTACK;
+typedef struct _AVLStack2
+{
+    unsigned     cEntries;
+    PAVLNODECORE aEntries[AVL_MAX_HEIGHT];
+    char         achFlags[AVL_MAX_HEIGHT];
+} AVLSTACK2, *PAVLSTACK2;
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+INLINE void AVLRebalance(PAVLSTACK pStack);
+
+
+/**
+ * Inserts a node into the AVL-tree.
+ * @returns   TRUE if inserted.
+ *            FALSE if node exists in tree.
+ * @param     ppTree  Pointer to the AVL-tree root node pointer.
+ * @param     pNode   Pointer to the node which is to be added.
+ * @sketch    Find the location of the node (using binary three algorithm.):
+ *            LOOP until NULL leaf pointer
+ *            BEGIN
+ *                Add node pointer pointer to the AVL-stack.
+ *                IF new-node-key < node key THEN
+ *                    left
+ *                ELSE
+ *                    right
+ *            END
+ *            Fill in leaf node and insert it.
+ *            Rebalance the tree.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+BOOL AVLInsert(PPAVLNODECORE ppTree, PAVLNODECORE pNode)
+{
+    AVLSTACK                AVLStack;
+    PPAVLNODECORE           ppCurNode = ppTree;
+    register AVLKEY         Key = pNode->Key;
+    register PAVLNODECORE   pCurNode;
+
+    AVLStack.cEntries = 0;
+
+    while ((pCurNode = *ppCurNode) != NULL)
+    {
+        assert(AVLStack.cEntries < AVL_MAX_HEIGHT);
+        assert(pNode != pCurNode);
+        AVLStack.aEntries[AVLStack.cEntries++] = ppCurNode;
+        #ifdef AVL_MAY_TRY_INSERT_EQUAL
+        /* check if equal */
+        if (AVL_E(pCurNode->Key, Key))
+            return FALSE;
+        #endif
+        if (AVL_G(pCurNode->Key, Key))
+            ppCurNode = &pCurNode->pLeft;
+        else
+            ppCurNode = &pCurNode->pRight;
+    }
+
+    pNode->pLeft = pNode->pRight = NULL;
+    pNode->uchHeight = 1;
+    *ppCurNode = pNode;
+
+    AVLRebalance(SSToDS(&AVLStack));
+    return TRUE;
+}
+
+
+/**
+ * Removes a node from the AVL-tree.
+ * @returns   Pointer to the node.
+ * @param     ppTree  Pointer to the AVL-tree root node pointer.
+ * @param     Key     Key value of the node which is to be removed.
+ * @sketch    Find the node which is to be removed:
+ *            LOOP until not found
+ *            BEGIN
+ *                Add node pointer pointer to the AVL-stack.
+ *                IF the keys matches THEN break!
+ *                IF remove key < node key THEN
+ *                    left
+ *                ELSE
+ *                    right
+ *            END
+ *            IF found THEN
+ *            BEGIN
+ *                IF left node not empty THEN
+ *                BEGIN
+ *                    Find the right most node in the left tree while adding the pointer to the pointer to it's parent to the stack:
+ *                    Start at left node.
+ *                    LOOP until right node is empty
+ *                    BEGIN
+ *                        Add to stack.
+ *                        go right.
+ *                    END
+ *                    Link out the found node.
+ *                    Replace the node which is to be removed with the found node.
+ *                    Correct the stack entry for the pointer to the left tree.
+ *                END
+ *                ELSE
+ *                BEGIN
+ *                    Move up right node.
+ *                    Remove last stack entry.
+ *                END
+ *                Balance tree using stack.
+ *            END
+ *            return pointer to the removed node (if found).
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+PAVLNODECORE AVLRemove(PPAVLNODECORE ppTree, AVLKEY Key)
+{
+    AVLSTACK                AVLStack;
+    PPAVLNODECORE           ppDeleteNode = ppTree;
+    register PAVLNODECORE   pDeleteNode;
+
+    AVLStack.cEntries = 0;
+
+    while ((pDeleteNode = *ppDeleteNode) != NULL)
+    {
+        assert(AVLStack.cEntries < AVL_MAX_HEIGHT);
+        AVLStack.aEntries[AVLStack.cEntries++] = ppDeleteNode;
+        #ifndef AVL_CMP
+        if (AVL_E(pDeleteNode->Key, Key))
+            break;
+
+        if (AVL_G(pDeleteNode->Key, Key))
+            ppDeleteNode = &pDeleteNode->pLeft;
+        else
+            ppDeleteNode = &pDeleteNode->pRight;
+        #else
+        {
+        int register iDiff;
+        if ((iDiff = AVL_CMP(pDeleteNode->Key, Key)) == 0)
+            break;
+
+        if (iDiff > 0)
+            ppDeleteNode = &pDeleteNode->pLeft;
+        else
+            ppDeleteNode = &pDeleteNode->pRight;
+        }
+        #endif
+    }
+
+    if (pDeleteNode != NULL)
+    {
+        if (pDeleteNode->pLeft != NULL)
+        {
+            unsigned                iStackEntry = AVLStack.cEntries;
+            PPAVLNODECORE           ppLeftLeast = &pDeleteNode->pLeft;
+            register PAVLNODECORE   pLeftLeast;
+
+            while ((pLeftLeast = *ppLeftLeast)->pRight != NULL) /* Left most node. */
+            {
+                assert(AVLStack.cEntries < AVL_MAX_HEIGHT);
+                AVLStack.aEntries[AVLStack.cEntries++] = ppLeftLeast;
+                ppLeftLeast = &pLeftLeast->pRight;
+                pLeftLeast  = pLeftLeast->pRight;
+            }
+
+            /* link out pLeftLeast */
+            *ppLeftLeast = pLeftLeast->pLeft;
+
+            /* link in place of the delete node. */
+            pLeftLeast->pLeft = pDeleteNode->pLeft;
+            pLeftLeast->pRight = pDeleteNode->pRight;
+            pLeftLeast->uchHeight = pDeleteNode->uchHeight;
+            *ppDeleteNode = pLeftLeast;
+            AVLStack.aEntries[iStackEntry] = &pLeftLeast->pLeft;
+        }
+        else
+        {
+            *ppDeleteNode = pDeleteNode->pRight;
+            AVLStack.cEntries--;
+        }
+
+        AVLRebalance(SSToDS(&AVLStack));
+    }
+
+    return pDeleteNode;
+}
+
+
+/**
+ * Gets a node from the tree (does not remove it!)
+ * @returns   Pointer to the node holding the given key.
+ * @param     ppTree  Pointer to the AVL-tree root node pointer.
+ * @param     Key     Key value of the node which is to be found.
+ * @sketch
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+PAVLNODECORE AVLGet(PPAVLNODECORE ppTree, AVLKEY Key)
+{
+    #ifndef AVL_CMP
+    register PAVLNODECORE   pNode = *ppTree;
+
+    while (pNode != NULL && AVL_NE(pNode->Key, Key))
+    {
+        if (AVL_G(pNode->Key, Key))
+            pNode = pNode->pLeft;
+        else
+            pNode = pNode->pRight;
+    }
+
+    #else
+
+    register int            iDiff;
+    register PAVLNODECORE   pNode = *ppTree;
+
+    while (pNode != NULL && (iDiff = AVL_CMP(pNode->Key, Key)) != 0)
+    {
+        if (iDiff > 0)
+            pNode = pNode->pLeft;
+        else
+            pNode = pNode->pRight;
+    }
+
+    #endif
+
+    return pNode;
+}
+
+
+/**
+ * Gets a node from the tree and its parent node (if any) (does not remove any nodes!)
+ * @returns   Pointer to the node holding the given key.
+ * @param     ppTree    Pointer to the AVL-tree root node pointer.
+ * @param     ppParent  Pointer to a variable which will hold the pointer to the partent node on
+ *                      return. When no node is found, this will hold the last searched node.
+ * @param     Key       Key value of the node which is to be found.
+ * @sketch
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+PAVLNODECORE    AVLGetWithParent(PPAVLNODECORE ppTree, PPAVLNODECORE ppParent, AVLKEY Key)
+{
+    #ifndef AVL_CMP
+
+    register PAVLNODECORE   pNode = *ppTree;
+    register PAVLNODECORE   pParent = NULL;
+
+    while (pNode != NULL && AVL_NE(pNode->Key, Key))
+    {
+        pParent = pNode;
+        if (AVL_G(pNode->Key, Key))
+            pNode = pNode->pLeft;
+        else
+            pNode = pNode->pRight;
+    }
+
+    #else
+
+    register PAVLNODECORE   pNode = *ppTree;
+    register PAVLNODECORE   pParent = NULL;
+    register int            iDiff;
+
+    while (pNode != NULL && (iDiff = AVL_CMP(pNode->Key, Key)) != 0)
+    {
+        pParent = pNode;
+        if (iDiff > 0)
+            pNode = pNode->pLeft;
+        else
+            pNode = pNode->pRight;
+    }
+
+    #endif
+
+    *ppParent = pParent;
+    return pNode;
+}
+
+
+
+/**
+ * Gets node from the tree (does not remove it!) and it's adjecent (by key value) nodes.
+ * @returns   Pointer to the node holding the given key.
+ * @param     ppTree   Pointer to the AVL-tree root node pointer.
+ * @param     Key      Key value of the node which is to be found.
+ * @param     ppLeft   Pointer to left node pointer.
+ * @param     ppRight  Pointer to right node pointer.
+ * @sketch    Find node with the given key, record search path on the stack.
+ *            IF found THEN
+ *            BEGIN
+ *                Find the right-most node in the left subtree.
+ *                Find the left-most node in the right subtree.
+ *                Rewind the stack while searching for more adjecent nodes.
+ *            END
+ *            return node with adjecent nodes.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+PAVLNODECORE AVLGetWithAdjecentNodes(PPAVLNODECORE ppTree, AVLKEY Key, PPAVLNODECORE ppLeft, PPAVLNODECORE ppRight)
+{
+    AVLSTACK        AVLStack;
+    PPAVLNODECORE   ppNode = ppTree;
+    PAVLNODECORE    pNode;
+    #ifdef AVL_CMP
+    int     iDiff;
+    #endif
+
+    AVLStack.cEntries = 0;
+
+    #ifndef AVL_CMP
+    while ((pNode = *ppNode) != NULL && AVL_NE(pNode->Key, Key))
+    #else
+    while ((pNode = *ppNode) != NULL && (iDiff = AVL_CMP(pNode->Key, Key)) != 0)
+    #endif
+    {
+        assert(AVLStack.cEntries < AVL_MAX_HEIGHT);
+        AVLStack.aEntries[AVLStack.cEntries++] = ppNode;
+        #ifndef AVL_CMP
+        if (AVL_G(pNode->Key, Key))
+        #else
+        if (iDiff > 0)
+        #endif
+            ppNode = &pNode->pLeft;
+        else
+            ppNode = &pNode->pRight;
+    }
+
+    if (pNode != NULL)
+    {
+        PAVLNODECORE    pCurNode;
+
+        /* find rigth-most node in left subtree. */
+        pCurNode = pNode->pLeft;
+        if (pCurNode != NULL)
+            while (pCurNode->pRight != NULL)
+                pCurNode = pCurNode->pRight;
+        *ppLeft = pCurNode;
+
+        /* find left-most node in right subtree. */
+        pCurNode = pNode->pRight;
+        if (pCurNode != NULL)
+            while (pCurNode->pLeft != NULL)
+                pCurNode = pCurNode->pLeft;
+        *ppRight = pCurNode;
+
+        /* rewind stack */
+        while (AVLStack.cEntries-- > 0)
+        {
+            pCurNode = *AVLStack.aEntries[AVLStack.cEntries];
+            #ifndef AVL_CMP
+            if (AVL_L(pCurNode->Key, Key) && (*ppLeft == NULL || AVL_G(pCurNode->Key, (*ppLeft)->Key)))
+                *ppLeft = pCurNode;
+            else if (AVL_G(pCurNode->Key, Key) && (*ppRight == NULL || AVL_L(pCurNode->Key, (*ppRight)->Key)))
+                *ppRight = pCurNode;
+            #else
+            if ((iDiff = AVL_CMP(pCurNode->Key, Key)) < 0 && (*ppLeft == NULL || AVL_G(pCurNode->Key, (*ppLeft)->Key)))
+                *ppLeft = pCurNode;
+            else if (iDiff > 0 && (*ppRight == NULL || AVL_L(pCurNode->Key, (*ppRight)->Key)))
+                *ppRight = pCurNode;
+            #endif
+        }
+    }
+    else
+        *ppLeft = *ppRight = NULL;
+
+    return pNode;
+}
+
+
+/**
+ * Iterates tru all nodes in the given tree.
+ * @returns   0 on success. Return from callback on failiure.
+ * @param     ppTree   Pointer to the AVL-tree root node pointer.
+ * @param     fFromLeft    TRUE:  Left to right.
+ *                         FALSE: Right to left.
+ * @param     pfnCallBack  Pointer to callback function.
+ * @param     pvParam      Userparameter passed on to the callback function.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+unsigned AVLDoWithAll(PPAVLNODECORE ppTree, int fFromLeft, PAVLCALLBACK pfnCallBack, void *pvParam)
+{
+    AVLSTACK2       AVLStack;
+    PAVLNODECORE    pNode;
+    unsigned        rc;
+
+    if (*ppTree == NULL)
+        return 0;
+
+    AVLStack.cEntries = 1;
+    AVLStack.achFlags[0] = 0;
+    AVLStack.aEntries[0] = *ppTree;
+
+    if (fFromLeft)
+    {   /* from left */
+        while (AVLStack.cEntries > 0)
+        {
+            pNode = AVLStack.aEntries[AVLStack.cEntries - 1];
+
+            /* left */
+            if (!AVLStack.achFlags[AVLStack.cEntries - 1]++)
+            {
+                if (pNode->pLeft != NULL)
+                {
+                    AVLStack.achFlags[AVLStack.cEntries] = 0; /* 0 first, 1 last */
+                    AVLStack.aEntries[AVLStack.cEntries++] = pNode->pLeft;
+                    continue;
+                }
+            }
+
+            /* center */
+            rc = pfnCallBack(pNode, pvParam);
+            if (rc != 0)
+                return rc;
+
+            /* right */
+            AVLStack.cEntries--;
+            if (pNode->pRight != NULL)
+            {
+                AVLStack.achFlags[AVLStack.cEntries] = 0;
+                AVLStack.aEntries[AVLStack.cEntries++] = pNode->pRight;
+            }
+        } /* while */
+    }
+    else
+    {   /* from right */
+        while (AVLStack.cEntries > 0)
+        {
+            pNode = AVLStack.aEntries[AVLStack.cEntries - 1];
+
+
+            /* right */
+            if (!AVLStack.achFlags[AVLStack.cEntries - 1]++)
+            {
+                if (pNode->pRight != NULL)
+                {
+                    AVLStack.achFlags[AVLStack.cEntries] = 0;  /* 0 first, 1 last */
+                    AVLStack.aEntries[AVLStack.cEntries++] = pNode->pRight;
+                    continue;
+                }
+            }
+
+            /* center */
+            rc = pfnCallBack(pNode, pvParam);
+            if (rc != 0)
+                return rc;
+
+            /* left */
+            AVLStack.cEntries--;
+            if (pNode->pLeft != NULL)
+            {
+                AVLStack.achFlags[AVLStack.cEntries] = 0;
+                AVLStack.aEntries[AVLStack.cEntries++] = pNode->pLeft;
+            }
+        } /* while */
+    }
+
+    return 0;
+}
+
+
+/**
+ * Starts an enumeration of all nodes in the given AVL tree.
+ * @returns   Pointer to the first node in the tree.
+ * @param     ppTree     Pointer to the AVL-tree root node pointer.
+ * @param     pEnumData  Pointer to enumeration control data.
+ * @param     fFromLeft  TRUE:  Left to right.
+ *                       FALSE: Right to left.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+PAVLNODECORE AVLBeginEnumTree(PPAVLNODECORE ppTree, PAVLENUMDATA pEnumData, int fFromLeft)
+{
+    if (*ppTree != NULL)
+    {
+        pEnumData->fFromLeft = (char)fFromLeft;
+        pEnumData->cEntries = 1;
+        pEnumData->aEntries[0] = *ppTree;
+        pEnumData->achFlags[0] = 0;
+    }
+    else
+        pEnumData->cEntries = 0;
+
+    return AVLGetNextNode(pEnumData);
+}
+
+
+/**
+ * Get the next node in the tree enumeration.
+ * @returns   Pointer to the first node in the tree.
+ * @param     pEnumData  Pointer to enumeration control data.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+PAVLNODECORE AVLGetNextNode(PAVLENUMDATA pEnumData)
+{
+    PAVLNODECORE    pNode;
+
+    if (pEnumData->fFromLeft)
+    {   /* from left */
+        while (pEnumData->cEntries > 0)
+        {
+            pNode = pEnumData->aEntries[pEnumData->cEntries - 1];
+
+            /* left */
+            if (pEnumData->achFlags[pEnumData->cEntries - 1] == 0)
+            {
+                pEnumData->achFlags[pEnumData->cEntries - 1]++;
+                if (pNode->pLeft != NULL)
+                {
+                    pEnumData->achFlags[pEnumData->cEntries] = 0; /* 0 left, 1 center, 2 right */
+                    pEnumData->aEntries[pEnumData->cEntries++] = pNode->pLeft;
+                    continue;
+                }
+            }
+
+            /* center */
+            if (pEnumData->achFlags[pEnumData->cEntries - 1] == 1)
+            {
+                pEnumData->achFlags[pEnumData->cEntries - 1]++;
+                return pNode;
+            }
+
+            /* right */
+            pEnumData->cEntries--;
+            if (pNode->pRight != NULL)
+            {
+                pEnumData->achFlags[pEnumData->cEntries] = 0;
+                pEnumData->aEntries[pEnumData->cEntries++] = pNode->pRight;
+            }
+        } /* while */
+    }
+    else
+    {   /* from right */
+        while (pEnumData->cEntries > 0)
+        {
+            pNode = pEnumData->aEntries[pEnumData->cEntries - 1];
+
+
+            /* right */
+            if (pEnumData->achFlags[pEnumData->cEntries - 1] == 0)
+            {
+                pEnumData->achFlags[pEnumData->cEntries - 1]++;
+                if (pNode->pRight != NULL)
+                {
+                    pEnumData->achFlags[pEnumData->cEntries] = 0;  /* 0 right, 1 center, 2 left */
+                    pEnumData->aEntries[pEnumData->cEntries++] = pNode->pRight;
+                    continue;
+                }
+            }
+
+            /* center */
+            if (pEnumData->achFlags[pEnumData->cEntries - 1] == 1)
+            {
+                pEnumData->achFlags[pEnumData->cEntries - 1]++;
+                return pNode;
+            }
+
+            /* left */
+            pEnumData->cEntries--;
+            if (pNode->pLeft != NULL)
+            {
+                pEnumData->achFlags[pEnumData->cEntries] = 0;
+                pEnumData->aEntries[pEnumData->cEntries++] = pNode->pLeft;
+            }
+        } /* while */
+    }
+
+    return NULL;
+
+}
+
+
+
+
+/**
+ * Finds the best fitting node in the tree for the given Key value.
+ * @returns   Pointer to the best fitting node found.
+ * @param     ppTree  Pointer to Pointer to the tree root node.
+ * @param     Key     The Key of which is to be found a best fitting match for..
+ * @param     fAbove  TRUE:  Returned node is have the closest key to Key from above.
+ *                    FALSE: Returned node is have the closest key to Key from below.
+ * @status    completely implemented.
+ * @sketch    The best fitting node is always located in the searchpath above you.
+ *            >= (above): The node where you last turned left.
+ *            <= (below): the node where you last turned right.
+ * @author    knut st. osmundsen
+ */
+PAVLNODECORE    AVLGetBestFit(PPAVLNODECORE ppTree, AVLKEY Key, int fAbove)
+{
+    #ifdef AVL_CMP
+    register int            iDiff;
+    #endif
+    register PAVLNODECORE   pNode = *ppTree;
+    PAVLNODECORE            pNodeLast = NULL;
+
+    if (fAbove)
+    {   /* pNode->Key >= Key */
+        #ifndef AVL_CMP
+        while (pNode != NULL && AVL_NE(pNode->Key, Key))
+        #else
+        while (pNode != NULL && (iDiff = AVL_CMP(pNode->Key, Key)) != 0)
+        #endif
+        {
+            #ifndef AVL_CMP
+            if (AVL_G(pNode->Key, Key))
+            #else
+            if (iDiff > 0)
+            #endif
+            {
+                pNodeLast = pNode;
+                pNode = pNode->pLeft;
+            }
+            else
+                pNode = pNode->pRight;
+        }
+    }
+    else
+    {   /* pNode->Key <= Key */
+        #ifndef AVL_CMP
+        while (pNode != NULL && AVL_NE(pNode->Key, Key))
+        #else
+        while (pNode != NULL && (iDiff = AVL_CMP(pNode->Key, Key)) != 0)
+        #endif
+        {
+            #ifndef AVL_CMP
+            if (AVL_L(pNode->Key, Key))
+            #else
+            if (iDiff < 0)
+            #endif
+            {
+                pNodeLast = pNode;
+                pNode = pNode->pRight;
+            }
+            else
+                pNode = pNode->pLeft;
+        }
+    }
+
+    return pNode == NULL ? pNodeLast /* best fit */ : pNode /* perfect match */;
+}
+
+
+/**
+ * Rewindes a stack of pointer to pointers to nodes, rebalancing the tree.
+ * @param     pStack  Pointer to stack to rewind.
+ * @sketch    LOOP thru all stack entries
+ *            BEGIN
+ *                Get pointer to pointer to node (and pointer to node) from stack.
+ *                IF 2 higher left subtree than in right subtree THEN
+ *                BEGIN
+ *                    IF higher (or equal) left-sub-subtree than right-sub-subtree THEN
+ *                                *                       n+2|n+3
+ *                              /   \                     /     \
+ *                            n+2    n       ==>         n+1   n+1|n+2
+ *                           /   \                             /     \
+ *                         n+1 n|n+1                          n|n+1  n
+ *
+ *                         Or with keys:
+ *
+ *                               4                           2
+ *                             /   \                       /   \
+ *                            2     5        ==>          1     4
+ *                           / \                               / \
+ *                          1   3                             3   5
+ *
+ *                    ELSE
+ *                                *                         n+2
+ *                              /   \                      /   \
+ *                            n+2    n                   n+1   n+1
+ *                           /   \           ==>        /  \   /  \
+ *                          n    n+1                    n  L   R   n
+ *                               / \
+ *                              L   R
+ *
+ *                         Or with keys:
+ *                               6                           4
+ *                             /   \                       /   \
+ *                            2     7        ==>          2     6
+ *                          /   \                       /  \  /  \
+ *                          1    4                      1  3  5  7
+ *                              / \
+ *                             3   5
+ *                END
+ *                ELSE IF 2 higher in right subtree than in left subtree THEN
+ *                BEGIN
+ *                    Same as above but left <==> right. (invert the picture)
+ *                ELSE
+ *                    IF correct height THEN break
+ *                    ELSE correct height.
+ *            END
+ * @status
+ * @author    knut st. osmundsen
+ * @remark
+ */
+INLINE void AVLRebalance(PAVLSTACK pStack)
+{
+    while (pStack->cEntries > 0)
+    {
+        PPAVLNODECORE   ppNode = pStack->aEntries[--pStack->cEntries];
+        PAVLNODECORE    pNode = *ppNode;
+        PAVLNODECORE    pLeftNode = pNode->pLeft;
+        unsigned char   uchLeftHeight = AVL_HEIGHTOF(pLeftNode);
+        PAVLNODECORE    pRightNode = pNode->pRight;
+        unsigned char   uchRightHeight = AVL_HEIGHTOF(pRightNode);
+
+        if (uchRightHeight + 1 < uchLeftHeight)
+        {
+            PAVLNODECORE    pLeftLeftNode = pLeftNode->pLeft;
+            PAVLNODECORE    pLeftRightNode = pLeftNode->pRight;
+            unsigned char   uchLeftRightHeight = AVL_HEIGHTOF(pLeftRightNode);
+
+            if (AVL_HEIGHTOF(pLeftLeftNode) >= uchLeftRightHeight)
+            {
+                pNode->pLeft = pLeftRightNode;
+                pLeftNode->pRight = pNode;
+                pLeftNode->uchHeight = (unsigned char)(1 + (pNode->uchHeight = (unsigned char)(1 + uchLeftRightHeight)));
+                *ppNode = pLeftNode;
+            }
+            else
+            {
+                pLeftNode->pRight = pLeftRightNode->pLeft;
+                pNode->pLeft = pLeftRightNode->pRight;
+                pLeftRightNode->pLeft = pLeftNode;
+                pLeftRightNode->pRight = pNode;
+                pLeftNode->uchHeight = pNode->uchHeight = uchLeftRightHeight;
+                pLeftRightNode->uchHeight = uchLeftHeight;
+                *ppNode = pLeftRightNode;
+            }
+        }
+        else if (uchLeftHeight + 1 < uchRightHeight)
+        {
+            PAVLNODECORE    pRightLeftNode = pRightNode->pLeft;
+            unsigned char   uchRightLeftHeight = AVL_HEIGHTOF(pRightLeftNode);
+            PAVLNODECORE    pRightRightNode = pRightNode->pRight;
+
+            if (AVL_HEIGHTOF(pRightRightNode) >= uchRightLeftHeight)
+            {
+                pNode->pRight = pRightLeftNode;
+                pRightNode->pLeft = pNode;
+                pRightNode->uchHeight = (unsigned char)(1 + (pNode->uchHeight = (unsigned char)(1 + uchRightLeftHeight)));
+                *ppNode = pRightNode;
+            }
+            else
+            {
+                pRightNode->pLeft = pRightLeftNode->pRight;
+                pNode->pRight = pRightLeftNode->pLeft;
+                pRightLeftNode->pRight = pRightNode;
+                pRightLeftNode->pLeft = pNode;
+                pRightNode->uchHeight = pNode->uchHeight = uchRightLeftHeight;
+                pRightLeftNode->uchHeight = uchRightHeight;
+                *ppNode = pRightLeftNode;
+            }
+        }
+        else
+        {
+            register unsigned char uchHeight = (unsigned char)(max(uchLeftHeight, uchRightHeight) + 1);
+            if (uchHeight == pNode->uchHeight)
+                break;
+            pNode->uchHeight = uchHeight;
+        }
+    }
+}
+
diff --git a/src/fastdep/avl.h b/src/fastdep/avl.h
new file mode 100644
index 0000000..90db3da
--- /dev/null
+++ b/src/fastdep/avl.h
@@ -0,0 +1,102 @@
+/* $Id: avl.h 2243 2009-01-10 02:24:02Z bird $
+ *
+ * AVL-Tree (lookalike) declaration.
+ *
+ * This AVL implementation is configurable from this headerfile. By
+ * for example alterning the AVLKEY typedefinition an the AVL_<L|G|E|N>[E]
+ * macros you are able to create different trees. Currently you may only have
+ * one type of trees within one program (module).
+ *
+ * TREETYPE: Case Sensitive Strings (Key is pointer).
+ *
+ *
+ * Copyright (c) 1999-2009 knut st. osmundsen
+ *
+ * GPL
+ *
+ */
+#ifndef _AVL_H_
+#define _AVL_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * AVL configuration. PRIVATE!
+ */
+#define AVL_MAX_HEIGHT              19          /* Up to 2^16 nodes. */
+#define AVL_MAY_TRY_INSERT_EQUAL    1           /* Ignore attempts to insert existing nodes. */
+
+/*
+ * AVL Compare macros
+ */
+#define AVL_L(key1, key2)  (strcmp(key1, key2) <  0)
+#define AVL_LE(key1, key2) (strcmp(key1, key2) <= 0)
+#define AVL_G(key1, key2)  (strcmp(key1, key2) >  0)
+#define AVL_GE(key1, key2) (strcmp(key1, key2) >= 0)
+#define AVL_E(key1, key2)  (strcmp(key1, key2) == 0)
+#define AVL_NE(key1, key2) (strcmp(key1, key2) != 0)
+#define AVL_CMP(key1, key2) strcmp(key1, key2)
+
+/**
+ * AVL key type
+ */
+typedef const char *AVLKEY;
+
+
+/**
+ * AVL Core node.
+ */
+typedef struct _AVLNodeCore
+{
+    AVLKEY                  Key;       /* Key value. */
+    struct  _AVLNodeCore *  pLeft;     /* Pointer to left leaf node. */
+    struct  _AVLNodeCore *  pRight;    /* Pointer to right leaf node. */
+    unsigned char           uchHeight; /* Height of this tree: max(heigth(left), heigth(right)) + 1 */
+} AVLNODECORE, *PAVLNODECORE, **PPAVLNODECORE;
+
+
+/**
+ * AVL Enum data - All members are PRIVATE! Don't touch!
+ */
+typedef struct _AVLEnumData
+{
+    char         fFromLeft;
+    char         cEntries;
+    char         achFlags[AVL_MAX_HEIGHT];
+    PAVLNODECORE aEntries[AVL_MAX_HEIGHT];
+} AVLENUMDATA, *PAVLENUMDATA;
+
+
+/*
+ * callback type
+ */
+typedef unsigned ( _PAVLCALLBACK)(PAVLNODECORE, void*);
+typedef _PAVLCALLBACK *PAVLCALLBACK;
+
+
+BOOL            AVLInsert(PPAVLNODECORE ppTree, PAVLNODECORE pNode);
+PAVLNODECORE    AVLRemove(PPAVLNODECORE ppTree, AVLKEY Key);
+PAVLNODECORE    AVLGet(PPAVLNODECORE ppTree, AVLKEY Key);
+PAVLNODECORE    AVLGetWithParent(PPAVLNODECORE ppTree, PPAVLNODECORE ppParent, AVLKEY Key);
+PAVLNODECORE    AVLGetWithAdjecentNodes(PPAVLNODECORE ppTree, AVLKEY Key, PPAVLNODECORE ppLeft, PPAVLNODECORE ppRight);
+unsigned        AVLDoWithAll(PPAVLNODECORE ppTree, int fFromLeft, PAVLCALLBACK pfnCallBack, void *pvParam);
+PAVLNODECORE    AVLBeginEnumTree(PPAVLNODECORE ppTree, PAVLENUMDATA pEnumData, int fFromLeft);
+PAVLNODECORE    AVLGetNextNode(PAVLENUMDATA pEnumData);
+PAVLNODECORE    AVLGetBestFit(PPAVLNODECORE ppTree, AVLKEY Key, int fAbove);
+
+
+
+/*
+ * Just in case NULL is undefined.
+ */
+#ifndef NULL
+    #define NULL ((void*)0)
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/fastdep/fastdep.c b/src/fastdep/fastdep.c
new file mode 100644
index 0000000..72d918e
--- /dev/null
+++ b/src/fastdep/fastdep.c
@@ -0,0 +1,4136 @@
+/* $Id: fastdep.c 2413 2010-09-11 17:43:04Z bird $
+ *
+ * Fast dependents. (Fast = Quick and Dirty!)
+ *
+ * Copyright (c) 1999-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * GPL
+ *
+ */
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+#define INCL_DOSERRORS
+#define INCL_FILEMGR
+#define INCL_DOSMISC
+
+
+/*
+ * Size of the \n charater (forget '\r').
+ * If you're compiling this under a UNICODE system this may perhaps change,
+ * but I doubd that fastdep will work at all under a UNICODE system. ;-)
+ */
+#if defined(UNICODE) && !defined(__WIN32OS2__)
+#define CBNEWLINE       (2)
+#else
+#define CBNEWLINE       (1)
+#endif
+
+
+/*
+ * Time stamp size.
+ */
+#define TS_SIZE         (48)
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#if defined(OS2FAKE)
+#include "os2fake.h"
+#else
+#include <os2.h>
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <direct.h>
+#include <assert.h>
+
+#include "avl.h"
+
+#ifdef __WIN32OS2__
+#   define WIN32API
+#   include <odinbuild.h>
+#else
+#   define ODIN32_BUILD_NR -1
+#endif
+
+#ifndef INLINE
+#   if defined(__IBMC__)
+#       define INLINE _Inline
+#   elif defined(__IBMCPP__)
+#       define INLINE inline
+#   elif defined(__WATCOMC__)
+#       define INLINE __inline
+#   elif defined(__WATCOM_CPLUSPLUS__)
+#       define INLINE inline
+#   else
+#       error message("unknown compiler - inline keyword unknown!")
+#   endif
+#endif
+
+/*
+ * This following section is used while testing fastdep.
+ * stdio.h should be included; string.h never included.
+ */
+/*
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+*/
+
+#if 1
+#include <stdio.h>
+#else
+#include <string.h>
+#include <string.h>
+#endif
+
+/*
+ */ /* */ /*
+#include <string.h>
+ */
+#if 1
+#    if 1
+        #if 0
+# include <string.h>
+        #else
+#            if 1
+                #if 1
+                    #if 0
+# include <string.h>
+                    #else /* */ /*
+*/
+ # include <stdio.h>
+                    #endif
+                #endif
+            #endif
+        #endif
+    #endif
+#endif
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+typedef struct _Options
+{
+    const char *    pszInclude;
+    const char *    pszExclude;
+    BOOL            fExcludeAll;
+    const char *    pszObjectExt;
+    const char *    pszObjectDir;
+    BOOL            fObjectDir;         /* replace object directory? */
+    const char *    pszRsrcExt;
+    BOOL            fObjRule;
+    BOOL            fNoObjectPath;
+    BOOL            fSrcWhenObj;
+    BOOL            fAppend;            /* append to the output file, not overwrite it. */
+    BOOL            fCheckCyclic;       /* allways check for cylic dependency before inserting an dependent. */
+    BOOL            fCacheSearchDirs;   /* cache entire search dirs. */
+    const char *    pszExcludeFiles;    /* List of excluded files. */
+    BOOL            fForceScan;         /* Force scan of all files. */
+} OPTIONS, *POPTIONS;
+
+
+/*
+ * Language specific analysis functions type.
+ */
+typedef int ( _FNLANG)  (const char *pszFilename, const char *pszNormFilename,
+                         const char *pszTS, BOOL fHeader, void **ppvRule);
+typedef _FNLANG    *PFNLANG;
+
+
+/**
+ * This struct holds the static configuration of the util.
+ */
+typedef struct _ConfigEntry
+{
+    char         szId[16];              /* Config ID. */
+    const char **papszExts;             /* Pointer to an array of pointer to extentions for this handler. */
+                                        /* If NULL this is the last entry. */
+    int          iFirstHdr;             /* Index into the papszExts array of the first headerfile/copybook. */
+                                        /* Set it to the NULL element of the array if no headers for this extention. */
+                                        /* A non-header file may get a object rule. */
+    PFNLANG      pfn;                   /* Pointer to handler function. */
+    char        *pszzAddDeps;           /* Pointer to an string of string of additional dependencies. */
+} CONFIGENTRY, *PCONFIGENTRY;
+
+
+/**
+ * Dependant Rule
+ */
+typedef struct _DepRule
+{
+    AVLNODECORE     avlCore;
+    char *          pszRule;            /* Pointer to rule name */
+    int             cDeps;              /* Entries in the dependant array. */
+    char **         papszDep;           /* Pointer to an array of pointers to dependants. */
+    BOOL            fUpdated;           /* If we have updated this entry during the run. */
+    char            szTS[TS_SIZE];      /* Time stamp. */
+} DEPRULE, *PDEPRULE;
+
+
+/**
+ * Filename cache entry.
+ */
+#define FCACHEENTRY     AVLNODECORE
+#define PFCACHEENTRY    PAVLNODECORE
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static void syntax(void);
+static int makeDependent(const char *pszFilename, const char *pszTS);
+
+static int langC_CPP(const char *pszFilename, const char *pszNormFilename, const char *pszTS, BOOL fHeader, void **ppvRule);
+static int langAsm(  const char *pszFilename, const char *pszNormFilename, const char *pszTS, BOOL fHeader, void **ppvRule);
+static int langRC(   const char *pszFilename, const char *pszNormFilename, const char *pszTS, BOOL fHeader, void **ppvRule);
+static int langCOBOL(const char *pszFilename, const char *pszNormFilename, const char *pszTS, BOOL fHeader, void **ppvRule);
+static int langIPF(  const char *pszFilename, const char *pszNormFilename, const char *pszTS, BOOL fHeader, void **ppvRule);
+
+
+/* string operations */
+static int strnicmpwords(const char *pszS1, const char *pszS2, int cch);
+
+/* file operations */
+static char *fileNormalize(char *pszFilename);
+static char *fileNormalize2(const char *pszFilename, char *pszBuffer);
+       char *filePath(const char *pszFilename, char *pszBuffer);
+static char *filePathSlash(const char *pszFilename, char *pszBuffer);
+static char *filePathSlash2(const char *pszFilename, char *pszBuffer);
+static char *fileName(const char *pszFilename, char *pszBuffer);
+static char *fileNameNoExt(const char *pszFilename, char *pszBuffer);
+static char *fileExt(const char *pszFilename, char *pszBuffer);
+
+/* filecache operations */
+static BOOL filecacheAddFile(const char *pszFilename);
+static BOOL filecacheAddDir(const char *pszDir);
+INLINE BOOL filecacheFind(const char *pszFilename);
+INLINE BOOL filecacheIsDirCached(const char *pszDir);
+static char*filecacheFileExist(const char *pszFilename, char *pszBuffer);
+
+/* pathlist operations */
+static char *pathlistFindFile(const char *pszPathList, const char *pszFilename, char *pszBuffer);
+static BOOL  pathlistFindFile2(const char *pszPathList, const char *pszFilename);
+
+/* word operations */
+static char *findEndOfWord(char *psz);
+#if 0 /* not used */
+static char *findStartOfWord(char *psz, const char *pszStart);
+#endif
+
+/* file helpers */
+static signed long fsize(FILE *phFile);
+
+/* text helpers */
+INLINE char *trim(char *psz);
+INLINE char *trimR(char *psz);
+INLINE char *trimQuotes(char *psz);
+
+/* preprocessors */
+static char *PreProcessLine(char *pszOut, const char *pszIn);
+
+/* textbuffer */
+static void *textbufferCreate(const char *pszFilename);
+static void  textbufferDestroy(void *pvBuffer);
+static char *textbufferNextLine(void *pvBuffer, char *psz);
+static char *textbufferGetNextLine(void *pvBuffer, void **ppv, char *pszLineBuffer, int cchLineBuffer);
+
+/* depend workers */
+static BOOL  depReadFile(const char *pszFilename, BOOL fAppend);
+static BOOL  depWriteFile(const char *pszFilename, BOOL fWriteUpdatedOnly);
+static void  depRemoveAll(void);
+static void *depAddRule(const char *pszRulePath, const char *pszName, const char *pszExt, const char *pszTS, BOOL fConvertName);
+static BOOL  depAddDepend(void *pvRule, const char *pszDep, BOOL fCheckCyclic, BOOL fConvertName);
+static int   depNameToReal(char *pszName);
+static int   depNameToMake(char *pszName, int cchName, const char *pszSrc);
+static void  depMarkNotFound(void *pvRule);
+static BOOL  depCheckCyclic(PDEPRULE pdepRule, const char *pszDep);
+static BOOL  depValidate(PDEPRULE pdepRule);
+INLINE char *depMakeTS(char *pszTS, PFILEFINDBUF3 pfindbuf3);
+static void  depAddSrcAddDeps(void *pvRule, const char *pszz);
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/*
+ * Pointer to the list of dependencies.
+ */
+static PDEPRULE pdepTree = NULL;
+
+
+/*
+ * Filecache - tree starts here.
+ */
+static PFCACHEENTRY pfcTree = NULL;
+static unsigned     cfcNodes = 0;
+static PFCACHEENTRY pfcDirTree = NULL;
+
+
+/*
+ * Current directory stuff
+ */
+static char     szCurDir[CCHMAXPATH];
+static int      aiSlashes[CCHMAXPATH];
+static int      cSlashes;
+
+
+/*
+ * Environment variables used.
+ * (These has the correct case.)
+ */
+static char *   pszIncludeEnv;
+
+
+/*
+ * Configuration stuff.
+ */
+static const char pszDefaultDepFile[] = ".depend";
+static const char *apszExtC_CPP[] = {"c", "sqc", "cpp", "h", "hpp", NULL};
+static const char *apszExtAsm[]   = {"asm", "inc", NULL};
+static const char *apszExtRC[]    = {"rc",  "dlg", NULL};
+static const char *apszExtORC[]   = {"orc", "dlg", NULL};
+static const char *apszExtCOBOL[] = {"cbl", "cob", "sqb", "wbl", NULL};
+static const char *apszExtIPF[]   = {"ipf", "man", NULL};
+static const char *apszExtIPP[]   = {"ipp", NULL};
+static CONFIGENTRY aConfig[] =
+{
+    {
+        "CX",
+        apszExtC_CPP,
+        3,
+        langC_CPP,
+        NULL,
+    },
+
+    {
+        "AS",
+        apszExtAsm,
+        1,
+        langAsm,
+        NULL,
+    },
+
+    {
+        "RC",
+        apszExtRC,
+        1,
+        langRC,
+        NULL,
+    },
+
+    {
+        "ORC",
+        apszExtORC,
+        1,
+        langRC,
+        NULL,
+    },
+
+    {
+        "COB",
+        apszExtCOBOL,
+        -1,
+        langCOBOL,
+        NULL,
+    },
+
+    {
+        "IPF",
+        apszExtIPF,
+        -1,
+        langIPF,
+        NULL,
+    },
+
+    {
+        "IPP",
+        apszExtIPP,
+        -1,
+        langC_CPP,
+        NULL,
+    },
+
+    /* terminating entry */
+    {
+        "",
+        NULL,
+        -1,
+        NULL,
+        NULL
+    }
+};
+
+
+static char szObjectDir[CCHMAXPATH];
+static char szObjectExt[64] = "obj";
+static char szRsrcExt[64]   = "res";
+static char szInclude[32768] = ";";
+static char szExclude[32768] = ";";
+static char szExcludeFiles[65536] = "";
+
+OPTIONS options =
+{
+    szInclude,       /* pszInclude */
+    szExclude,       /* pszExclude */
+    FALSE,           /* fExcludeAll */
+    szObjectExt,     /* pszObjectExt */
+    szObjectDir,     /* pszObjectDir */
+    FALSE,           /* fObjectDir */
+    szRsrcExt,       /* pszRsrcExt */
+    TRUE,            /* fObjRule */
+    FALSE,           /* fNoObjectPath */
+    TRUE,            /* fSrcWhenObj */
+    FALSE,           /* fAppend */
+    TRUE,            /* fCheckCyclic */
+    TRUE,            /* fCacheSearchDirs */
+    szExcludeFiles,  /* pszExcludeFiles */
+    FALSE            /* fForceScan */
+};
+
+
+/**
+ * Main function.
+ * @returns   0 on success.
+ *           -n count of failiures.
+ * @param
+ * @param
+ * @equiv
+ * @precond
+ * @methdesc
+ * @result
+ * @time
+ * @sketch
+ * @algo
+ * @remark
+ */
+int main(int argc, char **argv)
+{
+    int         rc   = 0;
+    int         argi = 1;
+    int         i;
+    char *      psz;
+    char *      psz2;
+    const char *pszDepFile = pszDefaultDepFile;
+    char        achBuffer[4096];
+
+    szObjectDir[0] = '\0';
+
+    if (argc == 1)
+    {
+        syntax();
+        return -87;
+    }
+
+    /*
+     * Initiate current directory stuff
+     */
+    if (_getcwd(szCurDir, sizeof(szCurDir)) == NULL)
+    {
+        fprintf(stderr, "fatal error: failed to get current directory\n");
+        return -88;
+    }
+    strlwr(szCurDir);
+    aiSlashes[0] = 0;
+    for (i = 1, cSlashes; szCurDir[i] != '\0'; i++)
+    {
+        if (szCurDir[i] == '/')
+            szCurDir[i] = '\\';
+        if (szCurDir[i] == '\\')
+            aiSlashes[cSlashes++] = i;
+    }
+    if (szCurDir[i-1] != '\\')
+    {
+        aiSlashes[cSlashes] = i;
+        szCurDir[i++] = '\\';
+        szCurDir[i] = '\0';
+    }
+
+
+    /*
+     * Initiate environment variables used: INCLUDE
+     */
+    psz = getenv("INCLUDE");
+    if (psz != NULL)
+    {
+        pszIncludeEnv = strdup(psz);
+        strlwr(pszIncludeEnv);
+    }
+    else
+        pszIncludeEnv = "";
+
+
+    /*
+     * Disable hard errors.
+     */
+    DosError(FERR_DISABLEHARDERR | FERR_ENABLEEXCEPTION);
+
+
+    /*
+     * parse arguments
+     */
+    while (argi < argc)
+    {
+        if (argv[argi][0] == '-' || argv[argi][0] == '/')
+        {
+            /* parameters */
+            switch (argv[argi][1])
+            {
+                case 'A':
+                case 'a': /* Append to the output file */
+                    options.fAppend = argv[argi][2] != '-';
+                    break;
+
+                case 'D':
+                case 'd': /* "-d <filename>" */
+                {
+                    const char *pszOld = pszDepFile;
+                    if (argv[argi][2] != '\0')
+                        pszDepFile = &argv[argi][2];
+                    else
+                    {
+                        argi++;
+                        if (argi < argc)
+                            pszDepFile = argv[argi];
+                        else
+                        {
+                            fprintf(stderr, "invalid parameter -d, filename missing!\n");
+                            return -1;
+                        }
+                    }
+
+                    /* if dependencies are generated we'll flush them to the old filename */
+                    if (pdepTree != NULL && pszOld != pszDepFile)
+                    {
+                        if (!depWriteFile(pszOld, !options.fAppend))
+                            fprintf(stderr, "error: failed to write (flush) dependencies.\n");
+                        depRemoveAll();
+                    }
+                    break;
+                }
+
+                case 'C': /* forced directory cache  'ca' or cylic check 'cy'*/
+                case 'c':
+                    if (argv[argi][2] == 'a' || argv[argi][2] == 'A')
+                        options.fCacheSearchDirs = TRUE;
+                    else if ((argv[argi][2] == 'y' || argv[argi][2] == 'Y'))
+                        options.fCheckCyclic = argv[argi][3] != '-';
+                    break;
+
+                case 'E': /* list of paths. If a file is found in one of these directories the */
+                case 'e': /* filename will be used without the directory path. */
+                    /* Eall<[+]|-> ? */
+                    if (strlen(&argv[argi][1]) <= 5 && strnicmp(&argv[argi][1], "Eall", 4) == 0)
+                    {
+                        options.fExcludeAll = argv[argi][5] != '-';
+                        break;
+                    }
+                    /* path or path list */
+                    if (strlen(argv[argi]) > 2)
+                        psz = &argv[argi][2];
+                    else
+                    {
+                        if (++argi >= argc)
+                        {
+                            fprintf(stderr, "syntax error! Option -e.\n");
+                            return 1;
+                        }
+                        psz = argv[argi];
+                    }
+                    /* check if enviroment variable */
+                    if (*psz == '%')
+                    {
+                        psz2 = strdup(psz+1);
+                        if (psz2 != NULL && *psz2 != '\0')
+                        {
+                            if (psz2[strlen(psz2)-1] == '%')
+                                psz2[strlen(psz2)-1] = '\0';
+                            psz = getenv(psz2);
+                            free(psz2);
+                            if (psz == NULL)
+                                break;
+                        }
+                        else
+                        {
+                            fprintf(stderr, "error: -E% is not an valid argument!\n");
+                            return -1;
+                        }
+                    }
+                    if (psz != NULL)
+                    {
+                        strcat(szExclude, psz);
+                        strlwr(szExclude);
+                        if (szExclude[strlen(szExclude)-1] != ';')
+                            strcat(szExclude, ";");
+                    }
+                    break;
+
+                case 'f':
+                case 'F': /* force scan of all files. */
+                    options.fForceScan = argv[argi][2] != '-';
+                    break;
+
+                case 'I': /* optional include path. This has precedence over the INCLUDE environment variable. */
+                case 'i':
+                    if (strlen(argv[argi]) > 2)
+                        psz = &argv[argi][2];
+                    else
+                    {
+                        if (++argi >= argc)
+                        {
+                            fprintf(stderr, "syntax error! Option -i.\n");
+                            return 1;
+                        }
+                        psz = argv[argi];
+                    }
+                    /* check if enviroment variable */
+                    if (*psz == '%')
+                    {
+                        psz2 = strdup(psz+1);
+                        if (psz2 != NULL && *psz2 != '\0')
+                        {
+                            if (psz2[strlen(psz2)-1] == '%')
+                                psz2[strlen(psz2)-1] = '\0';
+                            psz = getenv(psz2);
+                            free(psz2);
+                            if (psz == NULL)
+                                break;
+                        }
+                        else
+                        {
+                            fprintf(stderr, "error: -I% is not an valid argument!\n");
+                            return -1;
+                        }
+                    }
+                    if (psz != NULL)
+                    {
+                        strcat(szInclude, psz);
+                        strlwr(szInclude);
+                        if (szInclude[strlen(szInclude)-1] != ';')
+                            strcat(szInclude, ";");
+                    }
+                    break;
+
+                case 'n': /* no object path , -N<[+]|-> */
+                case 'N':
+                    if (strlen(argv[argi]) <= 1+1+1)
+                        options.fNoObjectPath = argv[argi][2] != '-';
+                    else
+                    {
+                        fprintf(stderr, "error: invalid parameter!, '%s'\n", argv[argi]);
+                        return -1;
+                    }
+                    break;
+
+                case 'o': /* object base directory, Obj or Obr<[+]|-> */
+                case 'O':
+                    if (strlen(&argv[argi][1]) <= 4 && strnicmp(&argv[argi][1], "Obr", 3) == 0)
+                    {
+                        options.fObjRule = argv[argi][4] != '-';
+                        break;
+                    }
+
+                    if (strlen(&argv[argi][1]) >= 4 && strnicmp(&argv[argi][1], "Obj", 3) == 0)
+                    {
+                        if (strlen(argv[argi]) > 4)
+                            strcpy(szObjectExt, argv[argi]+4);
+                        else
+                        {
+                            if (++argi >= argc)
+                            {
+                                fprintf(stderr, "syntax error! Option -obj.\n");
+                                return 1;
+                            }
+                            strcpy(szObjectExt, argv[argi]);
+                        }
+                        break;
+                    }
+
+                    /* path: -o or -o- */
+                    options.fObjectDir = TRUE;
+                    if (strlen(argv[argi]) > 2)
+                    {
+                        if (argv[argi][2] == '-')  /* no object path */
+                            szObjectDir[0] = '\0';
+                        else
+                            strcpy(szObjectDir, argv[argi]+2);
+                    }
+                    else
+                    {
+                        if (++argi >= argc)
+                        {
+                            fprintf(stderr, "syntax error! Option -o.\n");
+                            return 1;
+                        }
+                        strcpy(szObjectDir, argv[argi]);
+                    }
+                    if (szObjectDir[0] != '\0'
+                        && szObjectDir[strlen(szObjectDir)-1] != '\\'
+                        && szObjectDir[strlen(szObjectDir)-1] != '/'
+                        )
+                        strcat(szObjectDir, "\\");
+                    break;
+
+                case 'r':
+                case 'R':
+                    if (strlen(argv[argi]) > 2)
+                        strcpy(szRsrcExt, argv[argi]+2);
+                    else
+                    {
+                        if (++argi >= argc)
+                        {
+                            fprintf(stderr, "syntax error! Option -r.\n");
+                            return 1;
+                        }
+                        strcpy(szRsrcExt, argv[argi]);
+                    }
+                    break;
+
+                case 's':
+                case 'S':
+                    if (!strnicmp(argv[argi]+1, "srcadd", 6))
+                    {
+                        if (strlen(argv[argi]) > 7)
+                            psz = argv[argi]+2;
+                        else
+                        {
+                            if (++argi >= argc)
+                            {
+                                fprintf(stderr, "syntax error! Option -srcadd.\n");
+                                return 1;
+                            }
+                            psz = argv[argi];
+                        }
+                        if (!(psz2 = strchr(psz, ':')))
+                        {
+                            fprintf(stderr, "syntax error! Option -srcadd malformed!\n");
+                            return 1;
+                        }
+                        for (i = 0; aConfig[i].pfn; i++)
+                        {
+                            if (    !strnicmp(aConfig[i].szId, psz, psz2 - psz)
+                                &&  !aConfig[i].szId[psz2 - psz])
+                            {
+                                int cch, cch2;
+                                if (!*++psz2)
+                                {
+                                    fprintf(stderr, "error: Option -srcadd no additioanl dependancy!\n",
+                                            psz2 - psz, psz);
+                                    return 1;
+                                }
+                                cch = 0;
+                                psz = aConfig[i].pszzAddDeps;
+                                if (psz)
+                                {
+                                    do
+                                    {
+                                        cch += (cch2 = strlen(psz)) + 1;
+                                        psz += cch2 + 1;
+                                    } while (*psz);
+                                }
+                                cch2 = strlen(psz2);
+                                aConfig[i].pszzAddDeps = realloc(aConfig[i].pszzAddDeps, cch + cch2 + 2);
+                                if (!aConfig[i].pszzAddDeps)
+                                {
+                                    fprintf(stderr, "error: Out of memory!\n");
+                                    return 1;
+                                }
+                                strcpy(aConfig[i].pszzAddDeps + cch, psz2);
+                                aConfig[i].pszzAddDeps[cch + cch2 + 1] = '\0';
+                                psz = NULL;
+                                break;
+                            }
+                        }
+                        if (psz)
+                        {
+                            fprintf(stderr, "error: Option -srcadd, invalid language id '%.*s%'\n",
+                                    psz2 - psz, psz);
+                            return 1;
+                        }
+                    }
+                    else
+                    {
+                        fprintf(stderr, "syntax error! Invalid option %s\n", argv[argi]);
+                        return 1;
+                    }
+                    break;
+
+                case 'x':
+                case 'X': /* Exclude files */
+                    psz = &achBuffer[CCHMAXPATH+8];
+                    if (strlen(argv[argi]) > 2)
+                        strcpy(psz, &argv[argi][2]);
+                    else
+                    {
+                        if (++argi >= argc)
+                        {
+                            fprintf(stderr, "syntax error! Option -x.\n");
+                            return 1;
+                        }
+                        strcpy(psz, argv[argi]);
+                    }
+                    while (psz != NULL && *psz != ';')
+                    {
+                        char *  pszNext = strchr(psz, ';');
+                        int     cch = strlen(szExcludeFiles);
+                        if (pszNext)
+                            *pszNext++ = '\0';
+                        if (DosQueryPathInfo(psz, FIL_QUERYFULLNAME, &szExcludeFiles[cch], CCHMAXPATH))
+                        {
+                            fprintf(stderr, "error: Invalid exclude name\n");
+                            return -1;
+                        }
+                        strlwr(&szExcludeFiles[cch]);
+                        strcat(&szExcludeFiles[cch], ";");
+                        psz = pszNext;
+                    }
+                    break;
+
+                case 'h':
+                case 'H':
+                case '?':
+                    syntax();
+                    return 1;
+
+                default:
+                    fprintf(stderr, "error: invalid parameter! '%s'\n", argv[argi]);
+                    return -1;
+            }
+
+        }
+        else if (argv[argi][0] == '@')
+        {   /*
+             * Parameter file (debugger parameter length restrictions led to this):
+             *    Create a textbuffer.
+             *    Parse the file and create a new parameter vector.
+             *    Set argv to the new parameter vector, argi to 0 and argc to
+             *    the parameter count.
+             *    Restrictions: Parameters enclosed in "" is not implemented.
+             *                  No commandline parameters are processed after the @file
+             */
+            char *pszBuffer = (char*)textbufferCreate(&argv[argi][1]); /* !ASSUMS! that pvBuffer is the file string! */
+            if (pszBuffer != NULL)
+            {
+                char **apszArgs = NULL;
+                char *psz = pszBuffer;
+                int  i = 0;
+
+                while (*psz != '\0')
+                {
+                    /* find end of parameter word */
+                    char *pszEnd = psz + 1;
+                    char  ch = *pszEnd;
+                    while (ch != ' ' && ch != '\t' && ch != '\n' && ch != '\r' && ch != '\0')
+                        ch = *++pszEnd;
+
+                    /* allocate more arg array space? */
+                    if ((i % 512) == 0)
+                    {
+                        apszArgs = realloc(apszArgs, sizeof(char*) * 512);
+                        if (apszArgs == NULL)
+                        {
+                            fprintf(stderr, "error: out of memory. (line=%d)\n", __LINE__);
+                            return -8;
+                        }
+                    }
+                    *pszEnd = '\0';
+                    apszArgs[i++] = psz;
+
+                    /* next */
+                    psz = pszEnd + 1;
+                    ch = *psz;
+                    while (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r')
+                        ch = *++psz;
+                }
+
+                argc = i;
+                argi = 0;
+                argv = apszArgs;
+                continue;
+            }
+            else
+            {
+                fprintf(stderr, "error: could not open parameter file\n");
+                return -1;
+            }
+        }
+        else
+        {   /* not a parameter! */
+            ULONG           ulRc;
+            PFILEFINDBUF3   pfindbuf3 = (PFILEFINDBUF3)(void*)&achBuffer[0];
+            HDIR            hDir = HDIR_CREATE;
+            ULONG           cFiles = ~0UL;
+            int             i;
+
+
+            /*
+             * If append option is or if the forcescan option isn't is
+             * we'll have to read the existing dep file before starting
+             * adding new dependencies.
+             */
+            if (pdepTree == NULL && (options.fAppend || !options.fForceScan))
+                depReadFile(pszDepFile, options.fAppend);
+
+            /*
+             * Search for the files specified.
+             */
+            ulRc = DosFindFirst(argv[argi], &hDir,
+                                FILE_READONLY |  FILE_HIDDEN | FILE_SYSTEM | FILE_ARCHIVED,
+                                pfindbuf3, sizeof(achBuffer), &cFiles, FIL_STANDARD);
+            if (!options.fCacheSearchDirs)
+                options.fCacheSearchDirs = cFiles > 25;
+            while (ulRc == NO_ERROR)
+            {
+                for (i = 0;
+                     i < cFiles;
+                     i++, pfindbuf3 = (PFILEFINDBUF3)((int)pfindbuf3 + pfindbuf3->oNextEntryOffset)
+                     )
+                {
+                    const char *    psz;
+                    char            szSource[CCHMAXPATH];
+                    BOOL            fExcluded;
+                    char            szTS[TS_SIZE];
+
+                    /*
+                     * Make full path.
+                     */
+                    if ((psz = strrchr(argv[argi], '\\')) || (psz = strrchr(argv[argi], '/')) || (*(psz = &argv[argi][1]) == ':'))
+                    {
+                        strncpy(szSource, argv[argi], psz - argv[argi] + 1);
+                        szSource[psz - argv[argi] + 1]  = '\0';
+                    }
+                    else
+                        szSource[0]  = '\0';
+                    strcat(szSource, pfindbuf3->achName);
+                    strlwr(szSource);
+                    fileNormalize(szSource);
+
+                    /*
+                     * Check if this is an excluded file.
+                     */
+                    fExcluded = FALSE;
+                    psz = options.pszExcludeFiles;
+                    while (*psz != '\0' && *psz != ';')
+                    {
+                        const char * pszNext = strchr(psz, ';');
+                        if (strlen(szSource) == pszNext - psz && strncmp(szSource, psz, pszNext - psz) == 0)
+                            fExcluded = TRUE;
+                        psz = pszNext + 1;
+                    }
+                    if (fExcluded)
+                        continue;
+
+                    /*
+                     * Analyse the file.
+                     */
+                    depMakeTS(szTS, pfindbuf3);
+                    rc -= makeDependent(&szSource[0], szTS);
+                }
+
+                /* next file */
+                cFiles = ~0UL;
+                pfindbuf3 = (PFILEFINDBUF3)(void*)&achBuffer[0];
+                ulRc = DosFindNext(hDir, pfindbuf3, sizeof(achBuffer), &cFiles);
+            }
+            DosFindClose(hDir);
+        }
+        /* next */
+        argi++;
+    }
+
+    /* Write the depend file! */
+    if (!depWriteFile(pszDepFile, !options.fAppend))
+        fprintf(stderr, "error: failed to write dependencies file!\n");
+    #if 0
+    printf("cfcNodes=%d\n", cfcNodes);
+    #endif
+
+    return rc;
+}
+
+
+/**
+ * Displays the syntax description for this util.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+void syntax(void)
+{
+    printf(
+        "FastDep v0.48 (build %d)\n"
+        "Dependency scanner. Creates a makefile readable depend file.\n"
+        " - was quick and dirty, now it's just quick -\n"
+        "\n"
+        "Syntax: FastDep [options] <files> [more options [more files [...]]]\n"
+        "    or\n"
+        "        FastDep [options] @<parameterfile>\n"
+        "\n"
+        "Options:\n"
+        "   -a<[+]|->       Append to the output file.            Default: Overwrite.\n"
+        "   -ca             Force search directory caching.\n"
+        "                   Default: cache if more that 25 files are to be searched.\n"
+        "                            (more than 25 in the first file expression.)\n"
+        "   -cy<[+]|->      Check for cylic dependencies.         Default: -cy-\n"
+        "   -d <outputfn>   Output filename.                      Default: %s\n"
+        "   -e excludepath  Exclude paths. If a filename is found in any\n"
+        "                   of these paths only the filename is used, not\n"
+        "                   the path+filename (which is default).\n"
+        "   -eall<[+]|->    Include and source filenames, paths or no paths.\n"
+        "                   -eall+: No path are added to the filename.\n"
+        "                   -eall-: The filename is appended the include path\n"
+        "                           was found in.\n"
+        "                   Default: eall-\n"
+        "   -f<[+]|->       Force scanning of all files. If disabled we'll only scan\n"
+        "                   files which are younger or up to one month older than the\n"
+        "                   dependancy file (if it exists).       Default: disabled\n"
+        "   -i <include>    Additional include paths. INCLUDE is searched after this.\n"
+        "   -n<[+]|->       No path for object files in the rules.\n"
+        "   -o <objdir>     Path were object files are placed. This path replaces the\n"
+        "                   entire filename path\n"
+        "   -o-             No object path\n"
+        "   -obr<[+]|->     -obr+: Object rule.\n"
+        "                   -obr-: No object rule, rule for source filename is generated.\n"
+        "   -obj[ ]<objext> Object extention.                     Default: obj\n"
+        "   -srcadd[ ]<langid>:<dep>\n"
+        "                   Additional dependants for source file of the given language\n"
+        "                   type. langid: AS,CX,RC,ORC,COB,IPF\n"
+        "                   This is very usfull for compiler configuration files.\n"
+        "   -r[ ]<rsrcext>  Resource binary extention.            Default: res\n"
+        "   -x[ ]<f1[;f2]>  Files to exclude. Only exact filenames.\n"
+        "   <files>         Files to scan. Wildchars are allowed.\n"
+        "\n"
+        "Options and files could be mixed.\n"
+        " copyright (c) 1999-2010 knut st. osmundsen (bird-kBuild-spamx@anduin.net)\n",
+        ODIN32_BUILD_NR,
+        pszDefaultDepFile
+        );
+}
+
+
+/**
+ * Generates depend info on this file, these are stored internally
+ * and written to file later.
+ * @returns
+ * @param   pszFilename     Pointer to source filename. Correct case is assumed!
+ * @param   pszTS           File time stamp.
+ * @status  completely implemented.
+ * @author  knut st. osmundsen
+ */
+int makeDependent(const char *pszFilename, const char *pszTS)
+{
+    int    rc = -1;
+
+    char            szExt[CCHMAXPATH];
+    PCONFIGENTRY    pCfg = &aConfig[0];
+    BOOL            fHeader;
+
+    /*
+     * Find which filetype this is...
+     */
+    fileExt(pszFilename, szExt);
+    while (pCfg->papszExts != NULL)
+    {
+        const char **ppsz = pCfg->papszExts;
+        while (*ppsz != NULL && stricmp(*ppsz, szExt) != 0)
+            ppsz++;
+        if (*ppsz != NULL)
+        {
+            fHeader = pCfg->iFirstHdr > 0 && &pCfg->papszExts[pCfg->iFirstHdr] <= ppsz;
+            break;
+        }
+        pCfg++;
+    }
+
+    /* Found? */
+    if (pCfg->papszExts != NULL)
+    {
+        void *  pvRule = NULL;
+        char    szNormFile[CCHMAXPATH];
+        fileNormalize2(pszFilename, szNormFile);
+        rc = (*pCfg->pfn)(pszFilename, &szNormFile[0], pszTS, fHeader, &pvRule);
+        if (!rc && pvRule)
+        {
+            if (!fHeader && pCfg->pszzAddDeps)
+                depAddSrcAddDeps(pvRule, pCfg->pszzAddDeps);
+        }
+    }
+    else
+    {
+        if (*fileName(pszFilename, szExt) != '.') /* these are 'hidden' files, like .cvsignore, let's ignore them. */
+            fprintf(stderr, "warning: '%s' has an unknown file type.\n", pszFilename);
+        rc = 0;
+    }
+
+
+    return rc;
+}
+
+
+/**
+ * Generates depend info on this C or C++ file, these are stored internally
+ * and written to file later.
+ * @returns 0 on success.
+ *          !0 on error.
+ * @param   pszFilename         Pointer to source filename. Correct case is assumed!
+ * @param   pszNormFilename     Pointer to normalized source filename.
+ * @param   pszTS               File time stamp.
+ * @parma   fHeader             True if header file is being scanned.
+ * @param   ppvRule             Variabel to return any new rule handle.
+ * @status  completely implemented.
+ * @author  knut st. osmundsen
+ */
+int langC_CPP(const char *pszFilename, const char *pszNormFilename,
+              const char *pszTS, BOOL fHeader, void **ppvRule)
+{
+    void *  pvFile;                     /* Text buffer pointer. */
+    void *  pvRule;                     /* Handle to the current rule. */
+    char    szBuffer[4096];             /* Max line length is 4096... should not be a problem. */
+    int     iLine;                      /* Linenumber. */
+    void *  pv = NULL;                  /* An index used by textbufferGetNextLine. */
+    BOOL    fComment;                   /* TRUE when within a multiline comment. */
+                                        /* FALSE when not within a multiline comment. */
+    int     iIfStack;                   /* StackPointer. */
+    struct  IfStackEntry
+    {
+        int fIncluded : 1;              /* TRUE:  include this code;
+                                         * FALSE: excluded */
+        int fIf : 1;                    /* TRUE:  #if part of the expression.
+                                         * FALSE: #else part of the expression. */
+        int fSupported : 1;             /* TRUE:  supported if/else statement
+                                         * FALSE: unsupported all else[<something>] are ignored
+                                         *        All code is included.
+                                         */
+    } achIfStack[256];
+    char    szSrcDir[CCHMAXPATH];
+    filePath(pszNormFilename, szSrcDir);/* determin source code directory. */
+
+    /**********************************/
+    /* Add the depend rule            */
+    /**********************************/
+    if (options.fObjRule && !fHeader)
+    {
+        if (options.fNoObjectPath)
+            pvRule = depAddRule(fileNameNoExt(pszFilename, szBuffer), NULL, options.pszObjectExt, pszTS, FALSE);
+        else
+            pvRule = depAddRule(options.fObjectDir ?
+                                    options.pszObjectDir :
+                                    filePathSlash(pszFilename, szBuffer),
+                                fileNameNoExt(pszFilename, szBuffer + CCHMAXPATH),
+                                options.pszObjectExt, pszTS, FALSE);
+
+        if (options.fSrcWhenObj && pvRule)
+            depAddDepend(pvRule,
+                         options.fExcludeAll || pathlistFindFile2(options.pszExclude, pszNormFilename) ?
+                            fileName(pszFilename, szBuffer) : pszNormFilename,
+                         options.fCheckCyclic,
+                         FALSE);
+    }
+    else
+        pvRule = depAddRule(options.fExcludeAll || pathlistFindFile2(options.pszExclude, pszNormFilename) ?
+                            fileName(pszFilename, szBuffer) : pszNormFilename, NULL, NULL, pszTS, FALSE);
+
+    /* duplicate rule? */
+    *ppvRule = pvRule;
+    if (pvRule == NULL)
+        return 0;
+
+
+    /********************/
+    /* Make file buffer */
+    /********************/
+    pvFile = textbufferCreate(pszFilename);
+    if (!pvFile)
+    {
+        fprintf(stderr, "failed to open '%s'\n", pszFilename);
+        return -1;
+    }
+
+
+    /*******************/
+    /* find dependants */
+    /*******************/
+    /* Initiate the IF-stack, comment state and line number. */
+    iIfStack = 0;
+    achIfStack[iIfStack].fIf = TRUE;
+    achIfStack[iIfStack].fIncluded = TRUE;
+    achIfStack[iIfStack].fSupported = TRUE;
+    fComment = FALSE;
+    iLine = 0;
+    while (textbufferGetNextLine(pvFile, &pv, szBuffer, sizeof(szBuffer)) != NULL) /* line loop */
+    {
+        /* search for #include */
+        register char *pszC;
+        int cbLen;
+        int i = 0;
+        iLine++;
+
+        /* skip blank chars */
+        cbLen = strlen(szBuffer);
+        while (i + 2 < cbLen && (szBuffer[i] == ' ' || szBuffer[i] == '\t'))
+            i++;
+
+        /* preprocessor statement? */
+        if (!fComment && szBuffer[i] == '#')
+        {
+            /*
+             * Preprocessor checks
+             * We known that we have a preprocessor statment (starting with an '#' * at szBuffer[i]).
+             * Depending on the word afterwards we'll take some different actions.
+             * So we'll start of by extracting that word and make a string swich on it.
+             * Note that there might be some blanks between the hash and the word.
+             */
+            int     cchWord;
+            char *  pszEndWord;
+            char *  pszArgument;
+            i++;                /* skip hash ('#') */
+            while (szBuffer[i] == '\t' || szBuffer[i] == ' ') /* skip blanks */
+                i++;
+            pszArgument = pszEndWord = findEndOfWord(&szBuffer[i]);
+            cchWord = pszEndWord - &szBuffer[i];
+
+            /*
+             * Find the argument by skipping the blanks.
+             */
+            while (*pszArgument == '\t' || *pszArgument == ' ') /* skip blanks */
+                pszArgument++;
+
+            /*
+             * string switch.
+             */
+            if (strncmp(&szBuffer[i], "include", cchWord) == 0)
+            {
+                /*
+                 * #include
+                 *
+                 * Are we in a state where this file is to be included?
+                 */
+                if (achIfStack[iIfStack].fIncluded)
+                {
+                    char    szFullname[CCHMAXPATH];
+                    char *  psz;
+                    BOOL    f = FALSE;
+                    int     j;
+                    BOOL    fQuote;
+
+                    /* extract info between "" or <> */
+                    while (i < cbLen && !(f = (szBuffer[i] == '"' || szBuffer[i] == '<')))
+                        i++;
+                    fQuote = szBuffer[i] == '"';
+                    i++; /* skip '"' or '<' */
+
+                    /* if invalid statement then continue with the next line! */
+                    if (!f) continue;
+
+                    /* find end */
+                    j = f = 0;
+                    while (i + j < cbLen &&  j < CCHMAXPATH &&
+                           !(f = (szBuffer[i+j] == '"' || szBuffer[i+j] == '>')))
+                        j++;
+
+                    /* if invalid statement then continue with the next line! */
+                    if (!f) continue;
+
+                    /* copy filename */
+                    strncpy(szFullname, &szBuffer[i], j);
+                    szFullname[j] = '\0'; /* ensure terminatition. */
+                    strlwr(szFullname);
+
+                    /* find include file! */
+                    psz = fQuote ? pathlistFindFile(szSrcDir, szFullname, szBuffer) : NULL;
+                    if (psz == NULL)
+                        psz = pathlistFindFile(options.pszInclude, szFullname, szBuffer);
+                    if (psz == NULL)
+                        psz = pathlistFindFile(pszIncludeEnv, szFullname, szBuffer);
+
+                    /* did we find the include? */
+                    if (psz != NULL)
+                    {
+                        if (options.fExcludeAll || pathlistFindFile2(options.pszExclude, szBuffer))
+                        {   /* #include <sys/stats.h> makes trouble, check for '/' and '\'. */
+                            if (!strchr(szFullname, '/') && !strchr(szFullname, '\\'))
+                                depAddDepend(pvRule, szFullname, options.fCheckCyclic, FALSE);
+                            else
+                                fprintf(stderr, "%s(%d): warning include '%s' is ignored.\n",
+                                        pszFilename, iLine, szFullname);
+                        }
+                        else
+                            depAddDepend(pvRule, szBuffer, options.fCheckCyclic, FALSE);
+                    }
+                    else
+                    {
+                        fprintf(stderr, "%s(%d): warning include file '%s' not found!\n",
+                                pszFilename, iLine, szFullname);
+                        depMarkNotFound(pvRule);
+                    }
+                }
+            }
+            else
+                /*
+                 * #if
+                 */
+                if (strncmp(&szBuffer[i], "if", cchWord) == 0)
+            {   /* #if 0 and #if <1-9> are supported */
+                pszEndWord = findEndOfWord(pszArgument);
+                iIfStack++;
+                if ((pszEndWord - pszArgument) == 1
+                    && *pszArgument >= '0' && *pszArgument <= '9')
+                {
+                    if (*pszArgument != '0')
+                        achIfStack[iIfStack].fIncluded =  TRUE;
+                    else
+                        achIfStack[iIfStack].fIncluded =  FALSE;
+                }
+                else
+                    achIfStack[iIfStack].fSupported = FALSE;
+                achIfStack[iIfStack].fIncluded = TRUE;
+                achIfStack[iIfStack].fIf = TRUE;
+            }
+            else
+                /*
+                 * #else
+                 */
+                if (strncmp(&szBuffer[i], "else", cchWord) == 0)
+            {
+                if (achIfStack[iIfStack].fSupported)
+                {
+                    if (achIfStack[iIfStack].fIncluded) /* ARG!! this'll prevent warning */
+                        achIfStack[iIfStack].fIncluded = FALSE;
+                    else
+                        achIfStack[iIfStack].fIncluded = TRUE;
+                }
+                achIfStack[iIfStack].fIf = FALSE;
+            }
+            else
+                /*
+                 * #endif
+                 */
+                if (strncmp(&szBuffer[i], "endif", cchWord) == 0)
+            {   /* Pop the if-stack. */
+                if (iIfStack > 0)
+                    iIfStack--;
+                else
+                    fprintf(stderr, "%s(%d): If-Stack underflow!\n", pszFilename, iLine);
+            }
+            /*
+             * general if<something> and elseif<something> implementations
+             */
+            else
+                if (strncmp(&szBuffer[i], "elseif", 6) == 0)
+            {
+                achIfStack[iIfStack].fSupported = FALSE;
+                achIfStack[iIfStack].fIncluded = TRUE;
+            }
+            else
+                if (strncmp(&szBuffer[i], "if", 2) == 0)
+            {
+                iIfStack++;
+                achIfStack[iIfStack].fIf = TRUE;
+                achIfStack[iIfStack].fSupported = FALSE;
+                achIfStack[iIfStack].fIncluded = TRUE;
+            }
+            /* The rest of them aren't implemented yet.
+            else if (strncmp(&szBuffer[i], "if") == 0)
+            {
+            }
+            */
+        }
+
+        /*
+         * Comment checks.
+         *  -Start at first non-blank.
+         *  -Loop thru the line since we might have more than one
+         *   comment statement on a single line.
+         */
+        pszC = &szBuffer[i];
+        while (pszC != NULL && *pszC != '\0')
+        {
+            if (fComment)
+                pszC = strstr(pszC, "*/");  /* look for end comment mark. */
+            else
+            {
+                char *pszLC;
+                pszLC= strstr(pszC, "//");  /* look for single line comment mark. */
+                pszC = strstr(pszC, "/*");  /* look for start comment mark */
+                if (pszLC && pszLC < pszC)  /* if there is an single line comment mark before the */
+                    break;                  /* muliline comment mark we'll ignore the multiline mark. */
+            }
+
+            /* Comment mark found? */
+            if (pszC != NULL)
+            {
+                fComment = !fComment;
+                pszC += 2;          /* skip comment mark */
+
+                /* debug */
+                /*
+                if (fComment)
+                    fprintf(stderr, "starts at line %d\n", iLine);
+                else
+                    fprintf(stderr, "ends   at line %d\n", iLine);
+                    */
+            }
+        }
+    } /*while*/
+
+    textbufferDestroy(pvFile);
+
+    return 0;
+}
+
+
+/**
+ * Generates depend info on this file, these are stored internally
+ * and written to file later.
+ * @returns 0 on success.
+ *          !0 on error.
+ * @param   pszFilename         Pointer to source filename. Correct case is assumed!
+ * @param   pszNormFilename     Pointer to normalized source filename.
+ * @param   pszTS               File time stamp.
+ * @parma   fHeader             True if header file is being scanned.
+ * @param   ppvRule             Variabel to return any new rule handle.
+ * @status  completely implemented.
+ * @author  knut st. osmundsen
+ */
+int langAsm(const char *pszFilename, const char *pszNormFilename,
+            const char *pszTS, BOOL fHeader, void **ppvRule)
+{
+    void *  pvFile;                     /* Text buffer pointer. */
+    void *  pvRule;                     /* Handle to the current rule. */
+    char    szBuffer[4096];             /* Temporary buffer (max line lenght size...) */
+    int     iLine;                      /* current line number */
+    void *  pv = NULL;                  /* An index used by textbufferGetNextLine. */
+
+
+    /**********************************/
+    /* Add the depend rule            */
+    /**********************************/
+    if (options.fObjRule && !fHeader)
+    {
+        if (options.fNoObjectPath)
+            pvRule = depAddRule(fileNameNoExt(pszFilename, szBuffer), NULL, options.pszObjectExt, pszTS, FALSE);
+        else
+            pvRule = depAddRule(options.fObjectDir ?
+                                    options.pszObjectDir :
+                                    filePathSlash(pszFilename, szBuffer),
+                                fileNameNoExt(pszFilename, szBuffer + CCHMAXPATH),
+                                options.pszObjectExt, pszTS, FALSE);
+
+        if (options.fSrcWhenObj && pvRule)
+            depAddDepend(pvRule,
+                         options.fExcludeAll || pathlistFindFile2(options.pszExclude, pszNormFilename) ?
+                            fileName(pszFilename, szBuffer) : pszNormFilename,
+                         options.fCheckCyclic, FALSE);
+    }
+    else
+        pvRule = depAddRule(options.fExcludeAll || pathlistFindFile2(options.pszExclude, pszNormFilename) ?
+                            fileName(pszFilename, szBuffer) : pszNormFilename, NULL, NULL, pszTS, FALSE);
+
+    /* duplicate rule? */
+    *ppvRule = pvRule;
+    if (pvRule == NULL)
+        return 0;
+
+
+    /********************/
+    /* Make file buffer */
+    /********************/
+    pvFile = textbufferCreate(pszFilename);
+    if (!pvFile)
+    {
+        fprintf(stderr, "failed to open '%s'\n", pszFilename);
+        return -1;
+    }
+
+
+    /*******************/
+    /* find dependants */
+    /*******************/
+    iLine = 0;
+    while (textbufferGetNextLine(pvFile, &pv, szBuffer, sizeof(szBuffer)) != NULL) /* line loop */
+    {
+        /* search for include */
+        int cbLen;
+        int i = 0;
+        iLine++;
+
+        /* skip blank chars */
+        cbLen = strlen(szBuffer);
+        while (i + 9 < cbLen && (szBuffer[i] == ' ' || szBuffer[i] == '\t'))
+            i++;
+
+        /* is this an include? */
+        if (strnicmp(&szBuffer[i], "include", 7) == 0
+            && (szBuffer[i + 7] == '\t' || szBuffer[i + 7] == ' ')
+            )
+        {
+            char szFullname[CCHMAXPATH];
+            char *psz;
+            int  j;
+
+            /* skip to first no blank char  */
+            i += 7;
+            while (i < cbLen && (szBuffer[i] == ' ' || szBuffer[i] == '\t'))
+                i++;
+
+            /* comment check - if comment found, no filename was given. continue. */
+            if (szBuffer[i] == ';') continue;
+
+            /* find end */
+            j = 0;
+            while (i + j < cbLen
+                   &&  j < CCHMAXPATH
+                   && szBuffer[i+j] != ' '  && szBuffer[i+j] != '\t' && szBuffer[i+j] != '\n'
+                   && szBuffer[i+j] != '\0' && szBuffer[i+j] != ';'  && szBuffer[i+j] != '\r'
+                   )
+                j++;
+
+            /* copy filename */
+            strncpy(szFullname, &szBuffer[i], j);
+            szFullname[j] = '\0'; /* ensure terminatition. */
+            strlwr(szFullname);
+
+            /* find include file! */
+            psz = pathlistFindFile(options.pszInclude, szFullname, szBuffer);
+            if (psz == NULL)
+                psz = pathlistFindFile(pszIncludeEnv, szFullname, szBuffer);
+
+            /* Did we find the include? */
+            if (psz != NULL)
+            {
+                if (options.fExcludeAll || pathlistFindFile2(options.pszExclude, szBuffer))
+                {   /* include sys/stats.inc makes trouble, check for '/' and '\'. */
+                    if (!strchr(szFullname, '/') && !strchr(szFullname, '\\'))
+                        depAddDepend(pvRule, szFullname, options.fCheckCyclic, FALSE);
+                    else
+                        fprintf(stderr, "%s(%d): warning include '%s' is ignored.\n",
+                                pszFilename, iLine, szFullname);
+                }
+                else
+                    depAddDepend(pvRule, szBuffer, options.fCheckCyclic, FALSE);
+            }
+            else
+            {
+                fprintf(stderr, "%s(%d): warning include file '%s' not found!\n",
+                        pszFilename, iLine, szFullname);
+                depMarkNotFound(pvRule);
+            }
+        }
+    } /*while*/
+
+    textbufferDestroy(pvFile);
+
+    return 0;
+}
+
+
+/**
+ * Generates depend info on this Resource file, these are stored internally
+ * and written to file later.
+ * @returns 0 on success.
+ *          !0 on error.
+ * @param   pszFilename         Pointer to source filename. Correct case is assumed!
+ * @param   pszNormFilename     Pointer to normalized source filename.
+ * @param   pszTS               File time stamp.
+ * @parma   fHeader             True if header file is being scanned.
+ * @status  completely implemented.
+ * @author  knut st. osmundsen
+ */
+#if 0
+int langRC(const char *pszFilename, const char *pszNormFilename, void *pvFile, BOOL fHeader)
+{
+    void *  pvFile;                     /* Text buffer pointer. */
+    void *  pvRule;                     /* Handle to the current rule. */
+    char    szBuffer[4096];             /* Temporary buffer (max line lenght size...) */
+    int     iLine;                      /* current line number */
+    void *  pv = NULL;                  /* An index used by textbufferGetNextLine. */
+
+
+    /**********************************/
+    /* Add the depend rule            */
+    /**********************************/
+    if (options.fObjRule && !fHeader)
+    {
+        if (options.fNoObjectPath)
+            pvRule = depAddRule(fileNameNoExt(pszFilename, szBuffer), NULL, options.pszRsrcExt, pszTS, FALSE);
+        else
+            pvRule = depAddRule(options.fObjectDir ?
+                                    options.pszObjectDir :
+                                    filePathSlash(pszFilename, szBuffer),
+                                fileNameNoExt(pszFilename, szBuffer + CCHMAXPATH),
+                                options.pszRsrcExt, pszTS, FALSE);
+
+        if (options.fSrcWhenObj && pvRule)
+            depAddDepend(pvRule,
+                         options.fExcludeAll || pathlistFindFile2(options.pszExclude, pszNormFilename) ?
+                            fileName(pszFilename, szBuffer) : fileNormalize2(pszFilename, szBuffer),
+                         options.fCheckCyclic,
+                         FALSE);
+    }
+    else
+        pvRule = depAddRule(options.fExcludeAll || pathlistFindFile2(options.pszExclude, pszNormFilename) ?
+                            fileName(pszFilename, szBuffer) : pszNormFilename, NULL, NULL, pszTS, FALSE);
+
+    /* duplicate rule? */
+    *ppvRule = pvRule;
+    if (pvRule == NULL)
+        return 0;
+
+
+    /********************/
+    /* Make file buffer */
+    /********************/
+    pvFile = textbufferCreate(pszFilename);
+    if (!pvFile)
+    {
+        fprintf(stderr, "failed to open '%s'\n", pszFilename);
+        return -1;
+    }
+
+
+    /*******************/
+    /* find dependants */
+    /*******************/
+    iLine = 0;
+    while (textbufferGetNextLine(pvFile, &pv, szBuffer, sizeof(szBuffer)) != NULL) /* line loop */
+    {
+        /* search for #include */
+        int cbLen;
+        int i = 0;
+        int i1;
+        iLine++;
+
+        /* skip blank chars */
+        cbLen = strlen(szBuffer);
+        while (i + 9 < cbLen && (szBuffer[i] == ' ' || szBuffer[i] == '\t'))
+            i++;
+
+        /* is this an include? */
+        i1 = 1;
+        if (   strncmp(&szBuffer[i], "#include", 8) == 0
+            || (i1 = strnicmp(&szBuffer[i], "RCINCLUDE", 9)) == 0
+            || strnicmp(&szBuffer[i], "DLGINCLUDE", 10) == 0
+            )
+        {
+            char szFullname[CCHMAXPATH];
+            char *psz;
+            BOOL f = FALSE;
+            int  j;
+
+            if (i1 != 0)
+            {   /*
+                 * #include <file.h>,  #include "file.h" or DLGINCLUDE 1 "file.h"
+                 *
+                 * extract info between "" or <>
+                 */
+                while (i < cbLen && !(f = (szBuffer[i] == '"' || szBuffer[i] == '<')))
+                    i++;
+                i++; /* skip '"' or '<' */
+
+                /* if invalid statement then continue with the next line! */
+                if (!f) continue;
+
+                /* find end */
+                j = f = 0;
+                while (i + j < cbLen &&  j < CCHMAXPATH &&
+                       !(f = (szBuffer[i+j] == '"' || szBuffer[i+j] == '>')))
+                    j++;
+
+                /* if invalid statement then continue with the next line! */
+                if (!f) continue;
+            }
+            else
+            {   /*
+                 * RCINCLUDE ["]filename.dlg["]
+                 * Extract filename.
+                 */
+
+                /* skip to filename.dlg start - if eol will continue to loop. */
+                i += 9;
+                while (szBuffer[i] == ' ' || szBuffer[i] == '\t' || szBuffer[i] == '"')
+                    i++;
+                if (szBuffer[i] == '\0')
+                    continue;
+
+                /* search to end of filename. */
+                j = i+1;
+                while (   szBuffer[i+j] != ' ' && szBuffer[i+j] != '\t'
+                       && szBuffer[i+j] != '"' && szBuffer[i+j] != '\0')
+                    j++;
+            }
+
+            /* copy filename */
+            strncpy(szFullname, &szBuffer[i], j);
+            szFullname[j] = '\0'; /* ensure terminatition. */
+            strlwr(szFullname);
+
+            /* find include file! */
+            psz = pathlistFindFile(options.pszInclude, szFullname, szBuffer);
+            if (psz == NULL)
+                psz = pathlistFindFile(pszIncludeEnv, szFullname, szBuffer);
+
+            /* did we find the include? */
+            if (psz != NULL)
+            {
+                if (options.fExcludeAll || pathlistFindFile2(options.pszExclude, szBuffer))
+                {   /* #include <sys/stats.h> makes trouble, check for '/' and '\'. */
+                    if (!strchr(szFullname, '/') && !strchr(szFullname, '\\'))
+                        depAddDepend(pvRule, szFullname, options.fCheckCyclic, FALSE);
+                    else
+                        fprintf(stderr, "%s(%d): warning include '%s' is ignored.\n",
+                                pszFilename, iLine, szFullname);
+                }
+                else
+                    depAddDepend(pvRule, szBuffer, options.fCheckCyclic, FALSE);
+            }
+            else
+            {
+                fprintf(stderr, "%s(%d): warning include file '%s' not found!\n",
+                        pszFilename, iLine, szFullname);
+                depMarkNotFound(pvRule);
+            }
+        }
+    } /*while*/
+
+    textbufferDestroy(pvFile);
+    return 0;
+}
+#else
+int langRC(const char *pszFilename, const char *pszNormFilename,
+           const char *pszTS, BOOL fHeader, void **ppvRule)
+{
+    void *  pvFile;                     /* Text buffer pointer. */
+    void *  pvRule;                     /* Handle to the current rule. */
+    char    szBuffer[4096];             /* Max line length is 4096... should not be a problem. */
+    int     iLine;                      /* Linenumber. */
+    void *  pv = NULL;                  /* An index used by textbufferGetNextLine. */
+    BOOL    fComment;                   /* TRUE when within a multiline comment. */
+                                        /* FALSE when not within a multiline comment. */
+    int     iIfStack;                   /* StackPointer. */
+    struct  IfStackEntry
+    {
+        int fIncluded : 1;              /* TRUE:  include this code;
+                                         * FALSE: excluded */
+        int fIf : 1;                    /* TRUE:  #if part of the expression.
+                                         * FALSE: #else part of the expression. */
+        int fSupported : 1;             /* TRUE:  supported if/else statement
+                                         * FALSE: unsupported all else[<something>] are ignored
+                                         *        All code is included.
+                                         */
+    } achIfStack[256];
+
+
+    /**********************************/
+    /* Add the depend rule            */
+    /**********************************/
+    if (options.fObjRule && !fHeader)
+    {
+        if (options.fNoObjectPath)
+            pvRule = depAddRule(fileNameNoExt(pszFilename, szBuffer), NULL, options.pszRsrcExt, pszTS, FALSE);
+        else
+            pvRule = depAddRule(options.fObjectDir ?
+                                    options.pszObjectDir :
+                                    filePathSlash(pszFilename, szBuffer),
+                                fileNameNoExt(pszFilename, szBuffer + CCHMAXPATH),
+                                options.pszRsrcExt, pszTS, FALSE);
+
+        if (options.fSrcWhenObj && pvRule)
+            depAddDepend(pvRule,
+                         options.fExcludeAll || pathlistFindFile2(options.pszExclude, pszNormFilename) ?
+                            fileName(pszFilename, szBuffer) : pszNormFilename,
+                         options.fCheckCyclic,
+                         FALSE);
+    }
+    else
+        pvRule = depAddRule(options.fExcludeAll || pathlistFindFile2(options.pszExclude, pszNormFilename) ?
+                            fileName(pszFilename, szBuffer) : pszNormFilename, NULL, NULL, pszTS, FALSE);
+
+    /* duplicate rule? */
+    *ppvRule = pvRule;
+    if (pvRule == NULL)
+        return 0;
+
+
+    /********************/
+    /* Make file buffer */
+    /********************/
+    pvFile = textbufferCreate(pszFilename);
+    if (!pvFile)
+    {
+        fprintf(stderr, "failed to open '%s'\n", pszFilename);
+        return -1;
+    }
+
+
+    /*******************/
+    /* find dependants */
+    /*******************/
+    /* Initiate the IF-stack, comment state and line number. */
+    iIfStack = 0;
+    achIfStack[iIfStack].fIf = TRUE;
+    achIfStack[iIfStack].fIncluded = TRUE;
+    achIfStack[iIfStack].fSupported = TRUE;
+    fComment = FALSE;
+    iLine = 0;
+    while (textbufferGetNextLine(pvFile, &pv, szBuffer, sizeof(szBuffer)) != NULL) /* line loop */
+    {
+        register char * pszC;
+        char            szFullname[CCHMAXPATH];
+        int             cbLen;
+        int             i1 = 1;
+        int             i = 0;
+        iLine++;
+
+        /* skip blank chars */
+        cbLen = strlen(szBuffer);
+        while (i + 2 < cbLen && (szBuffer[i] == ' ' || szBuffer[i] == '\t'))
+            i++;
+
+        /* preprocessor statement? */
+        if (!fComment && szBuffer[i] == '#')
+        {
+            /*
+             * Preprocessor checks
+             * We known that we have a preprocessor statment (starting with an '#' * at szBuffer[i]).
+             * Depending on the word afterwards we'll take some different actions.
+             * So we'll start of by extracting that word and make a string swich on it.
+             * Note that there might be some blanks between the hash and the word.
+             */
+            int     cchWord;
+            char *  pszEndWord;
+            char *  pszArgument;
+            i++;                /* skip hash ('#') */
+            while (szBuffer[i] == '\t' || szBuffer[i] == ' ') /* skip blanks */
+                i++;
+            pszArgument = pszEndWord = findEndOfWord(&szBuffer[i]);
+            cchWord = pszEndWord - &szBuffer[i];
+
+            /*
+             * Find the argument by skipping the blanks.
+             */
+            while (*pszArgument == '\t' || *pszArgument == ' ') /* skip blanks */
+                pszArgument++;
+
+            /*
+             * string switch.
+             */
+            if (strncmp(&szBuffer[i], "include", cchWord) == 0)
+            {
+                /*
+                 * #include
+                 *
+                 * Are we in a state where this file is to be included?
+                 */
+                if (achIfStack[iIfStack].fIncluded)
+                {
+                    char *psz;
+                    BOOL f = FALSE;
+                    int  j;
+
+                    /* extract info between "" or <> */
+                    while (i < cbLen && !(f = (szBuffer[i] == '"' || szBuffer[i] == '<')))
+                        i++;
+                    i++; /* skip '"' or '<' */
+
+                    /* if invalid statement then continue with the next line! */
+                    if (!f) continue;
+
+                    /* find end */
+                    j = f = 0;
+                    while (i + j < cbLen &&  j < CCHMAXPATH &&
+                           !(f = (szBuffer[i+j] == '"' || szBuffer[i+j] == '>')))
+                        j++;
+
+                    /* if invalid statement then continue with the next line! */
+                    if (!f) continue;
+
+                    /* copy filename */
+                    strncpy(szFullname, &szBuffer[i], j);
+                    szFullname[j] = '\0'; /* ensure terminatition. */
+                    strlwr(szFullname);
+
+                    /* find include file! */
+                    psz = pathlistFindFile(options.pszInclude, szFullname, szBuffer);
+                    if (psz == NULL)
+                        psz = pathlistFindFile(pszIncludeEnv, szFullname, szBuffer);
+
+                    /* did we find the include? */
+                    if (psz != NULL)
+                    {
+                        if (options.fExcludeAll || pathlistFindFile2(options.pszExclude, szBuffer))
+                        {   /* #include <sys/stats.h> makes trouble, check for '/' and '\'. */
+                            if (!strchr(szFullname, '/') && !strchr(szFullname, '\\'))
+                                depAddDepend(pvRule, szFullname, options.fCheckCyclic, FALSE);
+                            else
+                                fprintf(stderr, "%s(%d): warning include '%s' is ignored.\n",
+                                        pszFilename, iLine, szFullname);
+                        }
+                        else
+                            depAddDepend(pvRule, szBuffer, options.fCheckCyclic, FALSE);
+                    }
+                    else
+                    {
+                        fprintf(stderr, "%s(%d): warning include file '%s' not found!\n",
+                                pszFilename, iLine, szFullname);
+                        depMarkNotFound(pvRule);
+                    }
+                }
+            }
+            else
+                /*
+                 * #if
+                 */
+                if (strncmp(&szBuffer[i], "if", cchWord) == 0)
+            {   /* #if 0 and #if <1-9> are supported */
+                pszEndWord = findEndOfWord(pszArgument);
+                iIfStack++;
+                if ((pszEndWord - pszArgument) == 1
+                    && *pszArgument >= '0' && *pszArgument <= '9')
+                {
+                    if (*pszArgument != '0')
+                        achIfStack[iIfStack].fIncluded =  TRUE;
+                    else
+                        achIfStack[iIfStack].fIncluded =  FALSE;
+                }
+                else
+                    achIfStack[iIfStack].fSupported = FALSE;
+                achIfStack[iIfStack].fIncluded = TRUE;
+                achIfStack[iIfStack].fIf = TRUE;
+            }
+            else
+                /*
+                 * #else
+                 */
+                if (strncmp(&szBuffer[i], "else", cchWord) == 0)
+            {
+                if (achIfStack[iIfStack].fSupported)
+                {
+                    if (achIfStack[iIfStack].fIncluded) /* ARG!! this'll prevent warning */
+                        achIfStack[iIfStack].fIncluded = FALSE;
+                    else
+                        achIfStack[iIfStack].fIncluded = TRUE;
+                }
+                achIfStack[iIfStack].fIf = FALSE;
+            }
+            else
+                /*
+                 * #endif
+                 */
+                if (strncmp(&szBuffer[i], "endif", cchWord) == 0)
+            {   /* Pop the if-stack. */
+                if (iIfStack > 0)
+                    iIfStack--;
+                else
+                    fprintf(stderr, "%s(%d): If-Stack underflow!\n", pszFilename, iLine);
+            }
+            /*
+             * general if<something> and elseif<something> implementations
+             */
+            else
+                if (strncmp(&szBuffer[i], "elseif", 6) == 0)
+            {
+                achIfStack[iIfStack].fSupported = FALSE;
+                achIfStack[iIfStack].fIncluded = TRUE;
+            }
+            else
+                if (strncmp(&szBuffer[i], "if", 2) == 0)
+            {
+                iIfStack++;
+                achIfStack[iIfStack].fIf = TRUE;
+                achIfStack[iIfStack].fSupported = FALSE;
+                achIfStack[iIfStack].fIncluded = TRUE;
+            }
+            /* The rest of them aren't implemented yet.
+            else if (strncmp(&szBuffer[i], "if") == 0)
+            {
+            }
+            */
+        } else
+            /*
+             * Check for resource compiler directives.
+             */
+            if (    !fComment
+                &&  !strchr(&szBuffer[i], ',')
+                &&  (   !strnicmp(&szBuffer[i], "ICON", 4)
+                     || !strnicmp(&szBuffer[i], "FONT", 4)
+                     || !strnicmp(&szBuffer[i], "BITMAP", 6)
+                     || !strnicmp(&szBuffer[i], "POINTER", 7)
+                     || !strnicmp(&szBuffer[i], "RESOURCE", 8)
+                     || !(i1 = strnicmp(&szBuffer[i], "RCINCLUDE", 9))
+                   /*|| !strnicmp(&szBuffer[i], "DLGINCLUDE", 10) - only used by the dlgeditor */
+                     || !strnicmp(&szBuffer[i], "DEFAULTICON", 11)
+                     )
+                )
+        {
+            /*
+             * RESOURCE 123 1 ["]filename.ext["]
+             */
+            char    szLine[1024];
+            char *  pszFile;
+            char    chQuote = ' ';
+
+            PreProcessLine(szLine, &szBuffer[i]);
+
+            pszFile = &szLine[strlen(szLine)-1];
+            if (*pszFile == '\"' || *pszFile == '\'')
+            {
+                chQuote = *pszFile;
+                *pszFile-- = '\0';
+            }
+            while (*pszFile != chQuote)
+                pszFile--;
+            *pszFile++ = '\0'; /* We now have extracted the filename - pszFile. */
+            strlwr(pszFile);
+
+            /* Add filename to the dependencies. */
+            if (i1)
+                depAddDepend(pvRule, pszFile, options.fCheckCyclic, FALSE);
+            else
+            {
+                char *psz;
+                /* find include file! */
+                psz = pathlistFindFile(options.pszInclude, pszFile, szFullname);
+                if (psz == NULL)
+                    psz = pathlistFindFile(pszIncludeEnv, pszFile, szFullname);
+
+                /* did we find the include? */
+                if (psz != NULL)
+                {
+                    if (options.fExcludeAll || pathlistFindFile2(options.pszExclude, szFullname))
+                    {   /* #include <sys/stats.h> makes trouble, check for '/' and '\'. */
+                        if (!strchr(pszFile, '/') && !strchr(pszFile, '\\'))
+                            depAddDepend(pvRule, pszFile, options.fCheckCyclic, FALSE);
+                        else
+                            fprintf(stderr, "%s(%d): warning include '%s' is ignored.\n",
+                                    pszFilename, iLine, pszFile);
+                    }
+                    else
+                        depAddDepend(pvRule, szFullname, options.fCheckCyclic, FALSE);
+                }
+                else
+                {
+                    fprintf(stderr, "%s(%d): warning include file '%s' not found!\n",
+                            pszFilename, iLine, pszFile);
+                    depMarkNotFound(pvRule);
+                }
+            }
+        }
+
+
+        /*
+         * Comment checks.
+         *  -Start at first non-blank.
+         *  -Loop thru the line since we might have more than one
+         *   comment statement on a single line.
+         */
+        pszC = &szBuffer[i];
+        while (pszC != NULL && *pszC != '\0')
+        {
+            if (fComment)
+                pszC = strstr(pszC, "*/");  /* look for end comment mark. */
+            else
+            {
+                char *pszLC;
+                pszLC= strstr(pszC, "//");  /* look for single line comment mark. */
+                pszC = strstr(pszC, "/*");  /* look for start comment mark */
+                if (pszLC && pszLC < pszC)  /* if there is an single line comment mark before the */
+                    break;                  /* muliline comment mark we'll ignore the multiline mark. */
+            }
+
+            /* Comment mark found? */
+            if (pszC != NULL)
+            {
+                fComment = !fComment;
+                pszC += 2;          /* skip comment mark */
+
+                /* debug */
+                /*
+                if (fComment)
+                    fprintf(stderr, "starts at line %d\n", iLine);
+                else
+                    fprintf(stderr, "ends   at line %d\n", iLine);
+                    */
+            }
+        }
+    } /*while*/
+
+    textbufferDestroy(pvFile);
+
+    return 0;
+}
+#endif
+
+
+/**
+ * Generates depend info on this COBOL file, these are stored internally
+ * and written to file later.
+ * @returns 0 on success.
+ *          !0 on error.
+ * @param   pszFilename         Pointer to source filename. Correct case is assumed!
+ * @param   pszNormFilename     Pointer to normalized source filename.
+ * @param   pszTS               File time stamp.
+ * @parma   fHeader             True if header file is being scanned.
+ * @param   ppvRule             Variabel to return any new rule handle.
+ * @status  completely implemented.
+ * @author  knut st. osmundsen
+ */
+int langCOBOL(const char *pszFilename, const char *pszNormFilename,
+              const char *pszTS, BOOL fHeader, void **ppvRule)
+{
+    void *  pvFile;                     /* Text buffer pointer. */
+    void *  pvRule;                     /* Handle to the current rule. */
+    char    szBuffer[4096];             /* Temporary buffer (max line lenght size...) */
+    int     iLine;                      /* current line number */
+    void *  pv = NULL;                  /* An index used by textbufferGetNextLine. */
+
+
+    /**********************************/
+    /* Add the depend rule            */
+    /**********************************/
+    if (options.fObjRule && !fHeader)
+    {
+        if (options.fNoObjectPath)
+            pvRule = depAddRule(fileNameNoExt(pszFilename, szBuffer), NULL, options.pszObjectExt, pszTS, FALSE);
+        else
+            pvRule = depAddRule(options.fObjectDir ?
+                                    options.pszObjectDir :
+                                    filePathSlash(pszFilename, szBuffer),
+                                fileNameNoExt(pszFilename, szBuffer + CCHMAXPATH),
+                                options.pszObjectExt, pszTS, FALSE);
+
+        if (options.fSrcWhenObj && pvRule)
+            depAddDepend(pvRule,
+                         options.fExcludeAll || pathlistFindFile2(options.pszExclude, pszNormFilename)
+                            ? fileName(pszFilename, szBuffer) : fileNormalize2(pszFilename, szBuffer),
+                         options.fCheckCyclic,
+                         FALSE);
+    }
+    else
+        pvRule = depAddRule(options.fExcludeAll || pathlistFindFile2(options.pszExclude, pszNormFilename) ?
+                            fileName(pszFilename, szBuffer) : pszNormFilename, NULL, NULL, pszTS, FALSE);
+
+    /* duplicate rule? */
+    *ppvRule = pvRule;
+    if (pvRule == NULL)
+        return 0;
+
+
+    /********************/
+    /* Make file buffer */
+    /********************/
+    pvFile = textbufferCreate(pszFilename);
+    if (!pvFile)
+    {
+        fprintf(stderr, "failed to open '%s'\n", pszFilename);
+        return -1;
+    }
+
+
+    /*******************/
+    /* find dependants */
+    /*******************/
+    iLine = 0;
+    while (textbufferGetNextLine(pvFile, &pv, szBuffer, sizeof(szBuffer)) != NULL) /* line loop */
+    {
+        /* search for #include */
+        int cbLen;
+        int i = 0;
+        int i1, i2;
+        iLine++;
+
+        /* check for comment mark (column 7) */
+        if (szBuffer[6] == '*')
+            continue;
+
+        /* skip blank chars */
+        cbLen = strlen(szBuffer);
+        while (i + 9 < cbLen && (szBuffer[i] == ' ' || szBuffer[i] == '\t'))
+            i++;
+
+        /* is this an include? */
+        if (   (i1 = strnicmp(&szBuffer[i], "COPY", 4)) == 0
+            || (i2 = strnicmpwords(&szBuffer[i], "EXEC SQL INCLUDE", 16)) == 0
+            )
+        {
+            char szFullname[CCHMAXPATH];
+            char *psz;
+            int  j;
+
+            /* skip statement */
+            i += 4;
+            if (i1 != 0)
+            {
+                int y = 2; /* skip two words */
+                do
+                {
+                    /* skip blanks */
+                    while (szBuffer[i] == ' ' || szBuffer[i] == '\t')
+                        i++;
+                    /* skip word */
+                    while (szBuffer[i] != ' ' && szBuffer[i] != '\t'
+                           && szBuffer[i] != '\0' && szBuffer[i] != '\n')
+                        i++;
+                    y--;
+                } while (y > 0);
+            }
+
+            /* check for blank */
+            if (szBuffer[i] != ' ' && szBuffer[i] != '\t') /* no copybook specified... */
+                continue;
+
+            /* skip blanks */
+            while (szBuffer[i] == ' ' || szBuffer[i] == '\t')
+                i++;
+
+            /* if invalid statement then continue with the next line! */
+            if (szBuffer[i] == '\0' || szBuffer[i] == '\n')
+                continue;
+
+            /* find end */
+            j = 0;
+            while (i + j < cbLen && j < CCHMAXPATH
+                   && szBuffer[i+j] != '.'
+                   && szBuffer[i+j] != ' '  && szBuffer[i+j] != '\t'
+                   && szBuffer[i+j] != '\0' && szBuffer[i+j] != '\n'
+                   )
+                j++;
+
+            /* if invalid statement then continue with the next line! */
+            if (szBuffer[i+j] != '.' && szBuffer[i+j] != ' ' && szBuffer[i] != '\t')
+                continue;
+
+            /* copy filename */
+            strncpy(szFullname, &szBuffer[i], j);
+            szFullname[j] = '\0'; /* ensure terminatition. */
+            strlwr(szFullname);
+
+            /* add extention .cpy - hardcoded for the moment. */
+            strcpy(&szFullname[j], ".cbl");
+
+            /* find include file! */
+            psz = pathlistFindFile(options.pszInclude, szFullname, szBuffer);
+            if (!psz)
+            {
+                strcpy(&szFullname[j], ".cpy");
+                psz = pathlistFindFile(options.pszInclude, szFullname, szBuffer);
+            }
+
+            /* did we find the include? */
+            if (psz != NULL)
+            {
+                if (options.fExcludeAll || pathlistFindFile2(options.pszExclude, szBuffer))
+                    depAddDepend(pvRule, szFullname, options.fCheckCyclic, FALSE);
+                else
+                    depAddDepend(pvRule, szBuffer, options.fCheckCyclic, FALSE);
+            }
+            else
+            {
+                szFullname[j] = '\0';
+                fprintf(stderr, "%s(%d): warning copybook '%s' was not found!\n",
+                        pszFilename, iLine, szFullname);
+                depMarkNotFound(pvRule);
+            }
+        }
+    } /*while*/
+
+    textbufferDestroy(pvFile);
+
+    return 0;
+}
+
+
+/**
+ * Generates depend info on this IPF file, these are stored internally
+ * and written to file later.
+ * @returns 0 on success.
+ *          !0 on error.
+ * @param   pszFilename         Pointer to source filename. Correct case is assumed!
+ * @param   pszNormFilename     Pointer to normalized source filename.
+ * @param   pszTS               File time stamp.
+ * @param   fHeader             True if header file is being scanned.
+ * @param   ppvRule             Variabel to return any new rule handle.
+ * @status  completely implemented.
+ * @author  knut st. osmundsen
+ */
+int langIPF(  const char *pszFilename, const char *pszNormFilename,
+              const char *pszTS, BOOL fHeader, void **ppvRule)
+{
+    void *  pvFile;                     /* Text buffer pointer. */
+    void *  pvRule;                     /* Handle to the current rule. */
+    char    szBuffer[4096];             /* Temporary buffer (max line lenght size...) */
+    int     iLine;                      /* current line number */
+    void *  pv = NULL;                  /* An index used by textbufferGetNextLine. */
+
+
+    /**********************************/
+    /* Add the depend rule            */
+    /**********************************/
+    /*if (options.fObjRule && !fHeader)
+    {
+        if (options.fNoObjectPath)
+            pvRule = depAddRule(fileNameNoExt(pszFilename, szBuffer), NULL, options.pszObjectExt, pszTS, FALSE);
+        else
+            pvRule = depAddRule(options.fObjectDir ?
+                                    options.pszObjectDir :
+                                    filePathSlash(pszFilename, szBuffer),
+                                fileNameNoExt(pszFilename, szBuffer + CCHMAXPATH),
+                                options.pszObjectExt, pszTS, FALSE);
+
+        if (options.fSrcWhenObj && pvRule)
+            depAddDepend(pvRule,
+                         options.fExcludeAll || pathlistFindFile2(options.pszExclude, pszNormFilename)
+                            ? fileName(pszFilename, szBuffer) : fileNormalize2(pszFilename, szBuffer),
+                         options.fCheckCyclic,
+                         FALSE);
+    }
+    else */
+        pvRule = depAddRule(options.fExcludeAll || pathlistFindFile2(options.pszExclude, pszNormFilename) ?
+                            fileName(pszFilename, szBuffer) : pszNormFilename, NULL, NULL, pszTS, FALSE);
+
+    /* duplicate rule? */
+    *ppvRule = pvRule;
+    if (pvRule == NULL)
+        return 0;
+
+
+    /********************/
+    /* Make file buffer */
+    /********************/
+    pvFile = textbufferCreate(pszFilename);
+    if (!pvFile)
+    {
+        fprintf(stderr, "failed to open '%s'\n", pszFilename);
+        return -1;
+    }
+
+
+    /*******************/
+    /* find dependants */
+    /*******************/
+    iLine = 0;
+    while (textbufferGetNextLine(pvFile, &pv, szBuffer, sizeof(szBuffer)) != NULL) /* line loop */
+    {
+        iLine++;
+
+        /* is this an imbed statement? */
+        if (!strncmp(&szBuffer[0], ".im", 3))
+        {
+            char    szFullname[CCHMAXPATH];
+            char *  psz;
+            int     i;
+            int     j;
+            char    chQuote = 0;
+
+            /* skip statement and blanks */
+            i = 4;
+            while (szBuffer[i] == ' ' || szBuffer[i] == '\t')
+                i++;
+
+            /* check for quotes */
+            if (szBuffer[i] == '\'' || szBuffer[i] == '\"')
+                chQuote = szBuffer[i++];
+
+            /* find end */
+            j = 0;
+            if (chQuote != 0)
+            {
+                while (szBuffer[i+j] != chQuote && szBuffer[i+j] != '\n' && szBuffer[i+j] != '\r' && szBuffer[i+j] != '\0')
+                    j++;
+            }
+            else
+            {
+                while (szBuffer[i+j] != '\n' && szBuffer[i+j] != '\r' && szBuffer[i+j] != '\0')
+                    j++;
+            }
+
+            /* find end */
+            if (j >= CCHMAXPATH)
+            {
+                fprintf(stderr, "%s(%d) warning: Filename too long ignored.\n", pszFilename, iLine);
+                continue;
+            }
+
+            /* copy filename */
+            strncpy(szFullname, &szBuffer[i], j);
+            szFullname[j] = '\0'; /* ensure terminatition. */
+            strlwr(szFullname);
+
+            /* find include file! */
+            psz = filecacheFileExist(szFullname, szBuffer);
+
+            /* did we find the include? */
+            if (psz != NULL)
+            {
+                if (options.fExcludeAll || pathlistFindFile2(options.pszExclude, szBuffer))
+                    depAddDepend(pvRule, fileName(szFullname, szBuffer), options.fCheckCyclic, FALSE);
+                else
+                    depAddDepend(pvRule, szBuffer, options.fCheckCyclic, FALSE);
+            }
+            else
+            {
+                fprintf(stderr, "%s(%d): warning imbeded file '%s' was not found!\n",
+                        pszFilename, iLine, szFullname);
+                depMarkNotFound(pvRule);
+            }
+        }
+    } /*while*/
+
+    textbufferDestroy(pvFile);
+    fHeader = fHeader;
+
+    return 0;
+}
+
+
+#define upcase(ch)   \
+     (ch >= 'a' && ch <= 'z' ? ch - ('a' - 'A') : ch)
+
+/**
+ * Compares words. Multiple spaces are treates as on single blank i both string when comparing them.
+ * @returns   0 equal. (same as strnicmp)
+ * @param     pszS1  String 1
+ * @param     pszS2  String 2
+ * @param     cch    Length to compare (relative to string 1)
+ */
+int strnicmpwords(const char *pszS1, const char *pszS2, int cch)
+{
+    do
+    {
+        while (cch > 0 && upcase(*pszS1) == upcase(*pszS2) && *pszS1 != ' ')
+            pszS1++, pszS2++, cch--;
+
+        /* blank test and skipping */
+        if (cch > 0 && *pszS1 == ' ' && *pszS2 == ' ')
+        {
+            while (cch > 0 && *pszS1 == ' ')
+                pszS1++, cch--;
+
+            while (*pszS2 == ' ')
+                pszS2++;
+        }
+        else
+            break;
+    } while (cch > 0);
+
+    return cch == 0 ? 0 : *pszS1 - *pszS2;
+}
+
+
+/**
+ * Normalizes the path slashes for the filename. It will partially expand paths too.
+ * @returns   pszFilename
+ * @param     pszFilename  Pointer to filename string. Not empty string!
+ *                         Much space to play with.
+ */
+char *fileNormalize(char *pszFilename)
+{
+    char *psz = pszFilename;
+
+    /* correct slashes */
+    while ((pszFilename = strchr(pszFilename, '//')) != NULL)
+        *pszFilename++ = '\\';
+
+    /* expand path? */
+    pszFilename = psz;
+    if (pszFilename[1] != ':')
+    {   /* relative path */
+        int     iSlash;
+        char    szFile[CCHMAXPATH];
+        char *  psz = szFile;
+
+        strcpy(szFile, pszFilename);
+        iSlash = *psz == '\\' ? 1 : cSlashes;
+        while (*psz != '\0')
+        {
+            if (*psz == '.' && psz[1] == '.'  && psz[2] == '\\')
+            {   /* up one directory */
+                if (iSlash > 0)
+                    iSlash--;
+                psz += 3;
+            }
+            else if (*psz == '.' && psz[1] == '\\')
+            {   /* no change */
+                psz += 2;
+            }
+            else
+            {   /* completed expantion! */
+                strncpy(pszFilename, szCurDir, aiSlashes[iSlash]+1);
+                strcpy(pszFilename + aiSlashes[iSlash]+1, psz);
+                break;
+            }
+        }
+    }
+    /* else: assume full path */
+
+    return psz;
+}
+
+
+/**
+ * Normalizes the path slashes for the filename. It will partially expand paths too.
+ * Makes name all lower case too.
+ * @returns   pszFilename
+ * @param     pszFilename  Pointer to filename string. Not empty string!
+ *                         Much space to play with.
+ * @param     pszBuffer    Pointer to output buffer.
+ */
+char *fileNormalize2(const char *pszFilename, char *pszBuffer)
+{
+    char *  psz = pszBuffer;
+    int     iSlash;
+
+    if (pszFilename[1] != ':')
+    {
+        /* iSlash */
+        if (*pszFilename == '\\' || *pszFilename == '/')
+            iSlash = 1;
+        else
+            iSlash = cSlashes;
+
+        /* interpret . and .. */
+        while (*pszFilename != '\0')
+        {
+            if (*pszFilename == '.' && pszFilename[1] == '.'  && (pszFilename[2] == '\\' || pszFilename[1] == '/'))
+            {   /* up one directory */
+                if (iSlash > 0)
+                    iSlash--;
+                pszFilename += 3;
+            }
+            else if (*pszFilename == '.' && (pszFilename[1] == '\\' || pszFilename[1] == '/'))
+            {   /* no change */
+                pszFilename += 2;
+            }
+            else
+            {   /* completed expantion! - TODO ..\ or .\ may appare within the remaining path too... */
+                strncpy(pszBuffer, szCurDir, aiSlashes[iSlash]+1);
+                strcpy(pszBuffer + aiSlashes[iSlash]+1, pszFilename);
+                break;
+            }
+        }
+    }
+    else
+    {   /* have drive letter specified - assume ok (TODO)*/
+        strcpy(pszBuffer, pszFilename);
+    }
+
+    /* correct slashes */
+    while ((pszBuffer = strchr(pszBuffer, '//')) != NULL)
+        *pszBuffer++ = '\\';
+
+    /* lower case it */
+    /*strlwr(psz);*/
+
+    return psz;
+}
+
+
+/**
+ * Copies the path part (excluding the slash) into pszBuffer and returns
+ * a pointer to the buffer.
+ * If no path is found "" is returned.
+ * @returns   Pointer to pszBuffer with path.
+ * @param     pszFilename  Pointer to readonly filename.
+ * @param     pszBuffer    Pointer to output Buffer.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+char *filePath(const char *pszFilename, char *pszBuffer)
+{
+    char *psz = strrchr(pszFilename, '\\');
+    if (psz == NULL)
+        psz = strrchr(pszFilename, '/');
+
+    if (psz == NULL)
+        *pszBuffer = '\0';
+    else
+    {
+        strncpy(pszBuffer, pszFilename, psz - pszFilename);
+        pszBuffer[psz - pszFilename] = '\0';
+    }
+
+    return pszBuffer;
+}
+
+
+/**
+ * Copies the path part including the slash into pszBuffer and returns
+ * a pointer to the buffer.
+ * If no path is found "" is returned.
+ * @returns   Pointer to pszBuffer with path.
+ * @param     pszFilename  Pointer to readonly filename.
+ * @param     pszBuffer    Pointer to output Buffer.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+char *filePathSlash(const char *pszFilename, char *pszBuffer)
+{
+    char *psz = strrchr(pszFilename, '\\');
+    if (psz == NULL)
+        psz = strrchr(pszFilename, '/');
+
+    if (psz == NULL)
+        *pszBuffer = '\0';
+    else
+    {
+        strncpy(pszBuffer, pszFilename, psz - pszFilename + 1);
+        pszBuffer[psz - pszFilename + 1] = '\0';
+    }
+
+    return pszBuffer;
+}
+
+
+/**
+ * Copies the path part including the slash into pszBuffer and returns
+ * a pointer to the buffer. If no path is found "" is returned.
+ * The path is normalized to only use '\\'.
+ * @returns   Pointer to pszBuffer with path.
+ * @param     pszFilename  Pointer to readonly filename.
+ * @param     pszBuffer    Pointer to output Buffer.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+char *filePathSlash2(const char *pszFilename, char *pszBuffer)
+{
+    char *psz = strrchr(pszFilename, '\\');
+    if (psz == NULL)
+        psz = strrchr(pszFilename, '/');
+
+    if (psz == NULL)
+        *pszBuffer = '\0';
+    else
+    {
+        strncpy(pszBuffer, pszFilename, psz - pszFilename + 1);
+        pszBuffer[psz - pszFilename + 1] = '\0';
+
+        /* normalize all '/' to '\\' */
+        psz = pszBuffer;
+        while ((psz = strchr(psz, '/')) != NULL)
+               *psz++ = '\\';
+    }
+
+    return pszBuffer;
+}
+
+
+/**
+ * Copies the filename (with extention) into pszBuffer and returns
+ * a pointer to the buffer.
+ * @returns   Pointer to pszBuffer with path.
+ * @param     pszFilename  Pointer to readonly filename.
+ * @param     pszBuffer    Pointer to output Buffer.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+char *fileName(const char *pszFilename, char *pszBuffer)
+{
+    char *psz = strrchr(pszFilename, '\\');
+    if (psz == NULL)
+        psz = strrchr(pszFilename, '/');
+
+    strcpy(pszBuffer, psz == NULL ? pszFilename : psz + 1);
+
+    return pszBuffer;
+}
+
+
+/**
+ * Copies the name part with out extention into pszBuffer and returns
+ * a pointer to the buffer.
+ * If no name is found "" is returned.
+ * @returns   Pointer to pszBuffer with path.
+ * @param     pszFilename  Pointer to readonly filename.
+ * @param     pszBuffer    Pointer to output Buffer.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+char *fileNameNoExt(const char *pszFilename, char *pszBuffer)
+{
+    char *psz = strrchr(pszFilename, '\\');
+    if (psz == NULL)
+        psz = strrchr(pszFilename, '/');
+
+    strcpy(pszBuffer, psz == NULL ? pszFilename : psz + 1);
+
+    psz = strrchr(pszBuffer, '.');
+    if (psz > pszBuffer) /* an extetion on it's own (.depend) is a filename not an extetion! */
+        *psz = '\0';
+
+    return pszBuffer;
+}
+
+
+/**
+ * Copies the extention part into pszBuffer and returns
+ * a pointer to the buffer.
+ * If no extention is found "" is returned.
+ * The dot ('.') is not included!
+ * @returns   Pointer to pszBuffer with path.
+ * @param     pszFilename  Pointer to readonly filename.
+ * @param     pszBuffer    Pointer to output Buffer.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+char *fileExt(const char *pszFilename, char *pszBuffer)
+{
+    char *psz = strrchr(pszFilename, '.');
+    if (psz != NULL)
+    {
+        if (strchr(psz, '\\') != NULL || strchr(psz, '/') != NULL)
+            *pszBuffer = '\0';
+        else
+            strcpy(pszBuffer, psz + 1);
+    }
+    else
+        *pszBuffer = '\0';
+
+    return pszBuffer;
+}
+
+
+/**
+ * Adds a file to the cache.
+ * @returns   Success indicator.
+ * @param     pszFilename   Name of the file which is to be added. (with path!)
+ */
+BOOL filecacheAddFile(const char *pszFilename)
+{
+    PFCACHEENTRY pfcNew;
+
+    /* allocate new block and fill in data */
+    pfcNew = malloc(sizeof(FCACHEENTRY) + strlen(pszFilename) + 1);
+    if (pfcNew == NULL)
+    {
+        fprintf(stderr, "error: out of memory! (line=%d)\n", __LINE__);
+        return FALSE;
+    }
+    pfcNew->Key = (char*)(void*)pfcNew + sizeof(FCACHEENTRY);
+    strcpy((char*)(unsigned)pfcNew->Key, pszFilename);
+    if (!AVLInsert(&pfcTree, pfcNew))
+    {
+        free(pfcNew);
+        return TRUE;
+    }
+    cfcNodes++;
+
+    return TRUE;
+}
+
+
+/**
+ * Adds a file to the cache.
+ * @returns   Success indicator.
+ * @param     pszDir   Name of the path which is to be added. (with slash!)
+ */
+BOOL filecacheAddDir(const char *pszDir)
+{
+    PFCACHEENTRY    pfcNew;
+    APIRET          rc;
+    char            szDir[CCHMAXPATH];
+    int             cchDir;
+    char            achBuffer[32768];
+    PFILEFINDBUF3   pfindbuf3 = (PFILEFINDBUF3)(void*)&achBuffer[0];
+    HDIR            hDir = HDIR_CREATE;
+    ULONG           cFiles = 0xFFFFFFF;
+    int             i;
+
+    /* Make path */
+    filePathSlash2(pszDir, szDir);
+    /*strlwr(szDir);*/ /* Convert name to lower case to allow faster searchs! */
+    cchDir = strlen(szDir);
+
+
+    /* Add directory to pfcDirTree. */
+    pfcNew = malloc(sizeof(FCACHEENTRY) + cchDir + 1);
+    if (pfcNew == NULL)
+    {
+        fprintf(stderr, "error: out of memory! (line=%d)\n", __LINE__);
+        DosFindClose(hDir);
+        return FALSE;
+    }
+    pfcNew->Key = (char*)(void*)pfcNew + sizeof(FCACHEENTRY);
+    strcpy((char*)(unsigned)pfcNew->Key, szDir);
+    AVLInsert(&pfcDirTree, pfcNew);
+
+
+    /* Start to search directory - all files */
+    strcat(szDir + cchDir, "*");
+    rc = DosFindFirst(szDir, &hDir, FILE_NORMAL,
+                      pfindbuf3, sizeof(achBuffer),
+                      &cFiles, FIL_STANDARD);
+    while (rc == NO_ERROR)
+    {
+        for (i = 0;
+             i < cFiles;
+             i++, pfindbuf3 = (PFILEFINDBUF3)((int)pfindbuf3 + pfindbuf3->oNextEntryOffset)
+             )
+        {
+            pfcNew = malloc(sizeof(FCACHEENTRY) + cchDir + pfindbuf3->cchName + 1);
+            if (pfcNew == NULL)
+            {
+                fprintf(stderr, "error: out of memory! (line=%d)\n", __LINE__);
+                DosFindClose(hDir);
+                return FALSE;
+            }
+            pfcNew->Key = (char*)(void*)pfcNew + sizeof(FCACHEENTRY);
+            strcpy((char*)(unsigned)pfcNew->Key, szDir);
+            strcpy((char*)(unsigned)pfcNew->Key + cchDir, pfindbuf3->achName);
+            strlwr((char*)(unsigned)pfcNew->Key + cchDir); /* Convert name to lower case to allow faster searchs! */
+            if (!AVLInsert(&pfcTree, pfcNew))
+                free(pfcNew);
+            else
+                cfcNodes++;
+        }
+
+        /* next */
+        cFiles = 0xFFFFFFF;
+        pfindbuf3 = (PFILEFINDBUF3)(void*)&achBuffer[0];
+        rc = DosFindNext(hDir, pfindbuf3, sizeof(achBuffer), &cFiles);
+    }
+
+    DosFindClose(hDir);
+
+    return TRUE;
+}
+
+
+/**
+ * Checks if pszFilename is exists in the cache.
+ * @return    TRUE if found. FALSE if not found.
+ * @param     pszFilename   Name of the file to be found. (with path!)
+ *                          This is in lower case!
+ */
+INLINE BOOL filecacheFind(const char *pszFilename)
+{
+    return AVLGet(&pfcTree, (AVLKEY)pszFilename) != NULL;
+}
+
+
+/**
+ * Checks if pszFilename is exists in the cache.
+ * @return    TRUE if found. FALSE if not found.
+ * @param     pszFilename   Name of the file to be found. (with path!)
+ *                          This is in lower case!
+ */
+INLINE BOOL filecacheIsDirCached(const char *pszDir)
+{
+    return AVLGet(&pfcDirTree, (AVLKEY)pszDir) != NULL;
+}
+
+
+/**
+ * Checks if a file exist, uses file cache if possible.
+ * @returns   Pointer to a filename consiting of the path part + the given filename.
+ *            (pointer into pszBuffer)
+ *            NULL if file is not found. ("" in buffer)
+ * @parma     pszFilename  Filename to find.
+ * @parma     pszBuffer    Ouput Buffer.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+char *filecacheFileExist(const char *pszFilename, char *pszBuffer)
+{
+    APIRET          rc;
+
+    *pszBuffer = '\0';
+
+    fileNormalize2(pszFilename, pszBuffer);
+
+    /*
+     * Search for the file in this directory.
+     *   Search cache first
+     */
+    if (!filecacheFind(pszBuffer))
+    {
+        char szDir[CCHMAXPATH];
+
+        filePathSlash(pszBuffer, szDir);
+        if (!filecacheIsDirCached(szDir))
+        {
+            /*
+             * If caching of entire dirs are enabled, we'll
+             * add the directory to the cache and search it.
+             */
+            if (options.fCacheSearchDirs && filecacheAddDir(szDir))
+            {
+                if (filecacheFind(pszBuffer))
+                    return pszBuffer;
+            }
+            else
+            {
+                FILESTATUS3 fsts3;
+
+                /* ask the OS */
+                rc = DosQueryPathInfo(pszBuffer, FIL_STANDARD, &fsts3, sizeof(fsts3));
+                if (rc == NO_ERROR)
+                {   /* add file to cache. */
+                    filecacheAddFile(pszBuffer);
+                    return pszBuffer;
+                }
+            }
+        }
+    }
+    else
+        return pszBuffer;
+
+    return NULL;
+}
+
+
+/**
+ * Finds a filename in a specified pathlist.
+ * @returns   Pointer to a filename consiting of the path part + the given filename.
+ *            (pointer into pszBuffer)
+ *            NULL if file is not found. ("" in buffer)
+ * @param     pszPathList  Path list to search for filename.
+ * @parma     pszFilename  Filename to find.
+ * @parma     pszBuffer    Ouput Buffer.
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+char *pathlistFindFile(const char *pszPathList, const char *pszFilename, char *pszBuffer)
+{
+    const char *psz = pszPathList;
+    const char *pszNext = NULL;
+
+    *pszBuffer = '\0';
+
+    if (pszPathList == NULL)
+        return NULL;
+
+    while (*psz != '\0')
+    {
+        /* find end of this path */
+        pszNext = strchr(psz, ';');
+        if (pszNext == NULL)
+            pszNext = psz + strlen(psz);
+
+        if (pszNext - psz > 0)
+        {
+            APIRET          rc;
+
+            /* make search statment */
+            strncpy(pszBuffer, psz, pszNext - psz);
+            pszBuffer[pszNext - psz] = '\0';
+            if (pszBuffer[pszNext - psz - 1] != '\\' && pszBuffer[pszNext - psz - 1] != '/')
+                strcpy(&pszBuffer[pszNext - psz], "\\");
+            strcat(pszBuffer, pszFilename);
+            fileNormalize(pszBuffer);
+
+            /*
+             * Search for the file in this directory.
+             *   Search cache first
+             */
+            if (!filecacheFind(pszBuffer))
+            {
+                char szDir[CCHMAXPATH];
+
+                filePathSlash(pszBuffer, szDir);
+                if (!filecacheIsDirCached(szDir))
+                {
+                    /*
+                     * If caching of entire dirs are enabled, we'll
+                     * add the directory to the cache and search it.
+                     */
+                    if (options.fCacheSearchDirs && filecacheAddDir(szDir))
+                    {
+                        if (filecacheFind(pszBuffer))
+                            return pszBuffer;
+                    }
+                    else
+                    {
+                        FILESTATUS3 fsts3;
+
+                        /* ask the OS */
+                        rc = DosQueryPathInfo(pszBuffer, FIL_STANDARD, &fsts3, sizeof(fsts3));
+                        if (rc == NO_ERROR)
+                        {   /* add file to cache. */
+                            filecacheAddFile(pszBuffer);
+                            return pszBuffer;
+                        }
+                    }
+                }
+            }
+            else
+                return pszBuffer;
+        }
+
+        /* next */
+        if (*pszNext != ';')
+            break;
+        psz = pszNext + 1;
+    }
+
+    return NULL;
+}
+
+
+/**
+ * Checks if the given filename may exist within any of the given paths.
+ * This check only matches the filename path agianst the paths in the pathlist.
+ * @returns   TRUE: if exists.
+ *            FALSE: don't exist.
+ * @param     pszPathList  Path list to search for filename.
+ * @parma     pszFilename  Filename to find. The filename should be normalized!
+ * @status    completely implemented.
+ * @author    knut st. osmundsen
+ */
+BOOL pathlistFindFile2(const char *pszPathList, const char *pszFilename)
+{
+    const char *psz = pszPathList;
+    const char *pszNext = NULL;
+    char        szBuffer[CCHMAXPATH];
+    char        szBuffer2[CCHMAXPATH];
+    char       *pszPathToFind = &szBuffer2[0];
+
+    /*
+     * Input checking
+     */
+    if (pszPathList == NULL)
+        return FALSE;
+
+    /*
+     * Normalize the filename and get it's path.
+     */
+    filePath(pszFilename, pszPathToFind);
+
+
+    /*
+     * Loop thru the path list.
+     */
+    while (*psz != '\0')
+    {
+        /* find end of this path */
+        pszNext = strchr(psz, ';');
+        if (pszNext == NULL)
+            pszNext = psz + strlen(psz);
+
+        if (pszNext - psz > 0)
+        {
+            char *  pszPath = &szBuffer[0];
+
+            /*
+             * Extract and normalize the path
+             */
+            strncpy(pszPath, psz, pszNext - psz);
+            pszPath[pszNext - psz] = '\0';
+            if (pszPath[pszNext - psz - 1] == '\\' && pszPath[pszNext - psz - 1] == '/')
+                pszPath[pszNext - psz - 1] = '\0';
+            fileNormalize(pszPath);
+
+            /*
+             * Check if it matches the path of the filename
+             */
+            if (strcmp(pszPath, pszPathToFind) == 0)
+                return TRUE;
+        }
+
+        /*
+         * Next part of the path list.
+         */
+        if (*pszNext != ';')
+            break;
+        psz = pszNext + 1;
+    }
+
+    return FALSE;
+}
+
+
+/**
+ * Finds the first char after word.
+ * @returns   Pointer to the first char after word.
+ * @param     psz  Where to start.
+ */
+char *findEndOfWord(char *psz)
+{
+
+    while (*psz != '\0' &&
+            (
+              (*psz >= 'A' && *psz <= 'Z') || (*psz >= 'a' && *psz <= 'z')
+              ||
+              (*psz >= '0' && *psz <= '9')
+              ||
+              *psz == '_'
+            )
+          )
+        ++psz;
+    return (char *)psz;
+}
+
+#if 0 /* not used */
+/**
+ * Find the starting char of a word
+ * @returns   Pointer to first char in word.
+ * @param     psz       Where to start.
+ * @param     pszStart  Where to stop.
+ */
+char *findStartOfWord(const char *psz, const char *pszStart)
+{
+    const char *pszR = psz;
+    while (psz >= pszStart &&
+            (
+                 (*psz >= 'A' && *psz <= 'Z')
+              || (*psz >= 'a' && *psz <= 'z')
+              || (*psz >= '0' && *psz <= '9')
+              || *psz == '_'
+             )
+          )
+        pszR = psz--;
+    return (char*)pszR;
+}
+#endif
+
+/**
+ * Find the size of a file.
+ * @returns   Size of file. -1 on error.
+ * @param     phFile  File handle.
+ */
+signed long fsize(FILE *phFile)
+{
+    int ipos;
+    signed long cb;
+
+    if ((ipos = ftell(phFile)) < 0
+        ||
+        fseek(phFile, 0, SEEK_END) != 0
+        ||
+        (cb = ftell(phFile)) < 0
+        ||
+        fseek(phFile, ipos, SEEK_SET) != 0
+        )
+        cb = -1;
+    return cb;
+}
+
+
+/**
+ * Trims a string, ie. removing spaces (and tabs) from both ends of the string.
+ * @returns   Pointer to first not space or tab char in the string.
+ * @param     psz   Pointer to the string which is to be trimmed.
+ * @status    completely implmented.
+ */
+INLINE char *trim(char *psz)
+{
+    int i;
+    if (psz == NULL)
+        return NULL;
+    while (*psz == ' ' || *psz == '\t')
+        psz++;
+    i = strlen(psz) - 1;
+    while (i >= 0 && (psz[i] == ' ' || *psz == '\t'))
+        i--;
+    psz[i+1] = '\0';
+    return psz;
+}
+
+
+/**
+ * Right trims a string, ie. removing spaces (and tabs) from the end of the stri
+ * @returns   Pointer to the string passed in.
+ * @param     psz   Pointer to the string which is to be right trimmed.
+ * @status    completely implmented.
+ */
+INLINE char *trimR(char *psz)
+{
+    int i;
+    if (psz == NULL)
+        return NULL;
+    i = strlen(psz) - 1;
+    while (i >= 0 && (psz[i] == ' ' || *psz == '\t'))
+        i--;
+    psz[i+1] = '\0';
+    return psz;
+}
+
+
+/**
+ * Trims any quotes of a possibly quoted string.
+ * @returns   Pointer to the string passed in.
+ * @param     psz   Pointer to the string which is to be quote-trimmed.
+ * @status    completely implmented.
+ */
+INLINE char *trimQuotes(char *psz)
+{
+    int i;
+    if (psz == NULL)
+        return NULL;
+
+    if (*psz == '\"' || *psz == '\'')
+        psz++;
+    i = strlen(psz) - 1;
+    if (psz[i] == '\"' || psz[i] == '\'')
+        psz[i] = '\0';
+
+    return psz;
+}
+
+
+/**
+ * C/C++ preprocess a single line. Assumes that we're not starting
+ * with at comment.
+ * @returns Pointer to output buffer.
+ * @param   pszOut  Ouput (preprocessed) string.
+ * @param   pszIn   Input string.
+ */
+char *PreProcessLine(char *pszOut, const char *pszIn)
+{
+    char *  psz = pszOut;
+    BOOL    fComment = FALSE;
+    BOOL    fQuote = FALSE;
+
+    /*
+     * Loop thru the string.
+     */
+    while (*pszIn != '\0')
+    {
+        if (fQuote)
+        {
+            *psz++ = *pszIn;
+            if (*pszIn == '\\')
+            {
+                *psz++ = *++pszIn;
+                pszIn++;
+            }
+            else if (*pszIn++ == '"')
+                fQuote = FALSE;
+        }
+        else if (fComment)
+        {
+            if (*pszIn == '*' && pszIn[1] == '/')
+            {
+                fComment = FALSE;
+                pszIn += 2;
+            }
+            else
+                pszIn++;
+        }
+        else
+        {
+            if (   (*pszIn == '/' && pszIn[1] == '/')
+                ||  *pszIn == '\0')
+            {   /* End of line. */
+                break;
+            }
+
+            if (*pszIn == '/' && pszIn[1] == '*')
+            {   /* Start comment */
+                fComment = TRUE;
+                pszIn += 2;
+            }
+            else
+                *psz++ = *pszIn++;
+        }
+    }
+
+    /*
+     * Trim right.
+     */
+    psz--;
+    while (psz >= pszOut && (*psz == ' ' || *psz == '\t'))
+        psz--;
+    psz[1] = '\0';
+
+    return pszOut;
+}
+
+
+/**
+ * Creates a memory buffer for a text file.
+ * @returns   Pointer to file memoryblock. NULL on error.
+ * @param     pszFilename  Pointer to filename string.
+ * @remark    This function is the one using most of the execution
+ *            time (DosRead + DosOpen) - about 70% of the execution time!
+ */
+void *textbufferCreate(const char *pszFilename)
+{
+    void *pvFile = NULL;
+    FILE *phFile;
+
+    phFile = fopen(pszFilename, "rb");
+    if (phFile != NULL)
+    {
+        signed long cbFile = fsize(phFile);
+        if (cbFile >= 0)
+        {
+            pvFile = malloc(cbFile + 1);
+            if (pvFile != NULL)
+            {
+                memset(pvFile, 0, cbFile + 1);
+                if (cbFile > 0 && fread(pvFile, 1, cbFile, phFile) == 0)
+                {   /* failed! */
+                    free(pvFile);
+                    pvFile = NULL;
+                }
+            }
+            else
+                fprintf(stderr, "warning/error: failed to open file %s\n", pszFilename);
+        }
+        fclose(phFile);
+    }
+    return pvFile;
+}
+
+
+/**
+ * Destroys a text textbuffer.
+ * @param     pvBuffer   Buffer handle.
+ */
+void textbufferDestroy(void *pvBuffer)
+{
+    free(pvBuffer);
+}
+
+
+/**
+ * Gets the next line from an textbuffer.
+ * @returns   Pointer to the next line.
+ * @param     pvBuffer  Buffer handle.
+ * @param     psz       Pointer to current line.
+ *                      NULL is passed in to get the first line.
+ */
+char *textbufferNextLine(void *pvBuffer, register char *psz)
+{
+    register char ch;
+
+    /* if first line psz is NULL. */
+    if (psz == NULL)
+        return (char*)pvBuffer;
+
+    /* skip till end of file or end of line. */
+    ch = *psz;
+    while (ch != '\0' && ch != '\n' && ch != '\r')
+        ch = *++psz;
+
+    /* skip line end */
+    if (ch == '\r')
+        ch = *++psz;
+    if (ch == '\n')
+        psz++;
+
+    return psz;
+}
+
+
+/**
+ * Gets the next line from an textbuffer.
+ * (fgets for textbuffer)
+ * @returns   Pointer to pszOutBuffer. NULL when end of file.
+ * @param     pvBuffer  Buffer handle.
+ * @param     ppv       Pointer to a buffer index pointer. (holds the current buffer index)
+ *                      Pointer to a null pointer is passed in to get the first line.
+ * @param     pszLineBuffer  Output line buffer. (!= NULL)
+ * @param     cchLineBuffer  Size of the output line buffer. (> 0)
+ * @remark    '\n' and '\r' are removed!
+ */
+char *textbufferGetNextLine(void *pvBuffer, void **ppv, char *pszLineBuffer, int cchLineBuffer)
+{
+    char *          pszLine = pszLineBuffer;
+    char *          psz = *(char**)(void*)ppv;
+    register char   ch;
+
+    /* first line? */
+    if (psz == NULL)
+        psz = pvBuffer;
+
+    /* Copy to end of the line or end of the linebuffer. */
+    ch = *psz;
+    cchLineBuffer--; /* reserve space for '\0' */
+    while (cchLineBuffer > 0 && ch != '\0' && ch != '\n' && ch != '\r')
+    {
+        *pszLine++ = ch;
+        ch = *++psz;
+    }
+    *pszLine = '\0';
+
+    /* skip line end */
+    if (ch == '\r')
+        ch = *++psz;
+    if (ch == '\n')
+        psz++;
+
+    /* check if position has changed - if unchanged it's the end of file! */
+    if (*ppv == (void*)psz)
+        pszLineBuffer = NULL;
+
+    /* store current position */
+    *ppv = (void*)psz;
+
+    return pszLineBuffer;
+}
+
+
+/**
+ * Appends a depend file to the internal file.
+ * This will update the date in the option struct.
+ */
+BOOL  depReadFile(const char *pszFilename, BOOL fAppend)
+{
+    void *      pvFile;
+    char *      pszNext;
+    char *      pszPrev;                /* Previous line, only valid when finding new rule. */
+    BOOL        fMoreDeps = FALSE;
+    void *      pvRule = NULL;
+
+
+    /* read depend file */
+    pvFile = textbufferCreate(pszFilename);
+    if (pvFile == NULL)
+        return FALSE;
+
+    /* parse the original depend file */
+    pszPrev = NULL;
+    pszNext = pvFile;
+    while (*pszNext != '\0')
+    {
+        int   i;
+        int   cch;
+        char *psz;
+
+        /* get the next line. */
+        psz = pszNext;
+        pszNext = textbufferNextLine(pvFile, pszNext);
+
+        /*
+         * Process the current line:
+         *   Start off by terminating the line.
+         *   Trim the line,
+         *   Skip empty lines.
+         *   If not looking for more deps Then
+         *     Check if new rule starts here.
+         *   Endif
+         *
+         *   If more deps to last rule Then
+         *     Get dependant name.
+         *   Endif
+         */
+        i = -1;
+        while (psz <= &pszNext[i] && pszNext[i] == '\n' || pszNext[i] == '\r')
+            pszNext[i--] = '\0';
+        trimR(psz);
+        cch = strlen(psz);
+        if (cch == 0)
+        {
+            fMoreDeps = FALSE;
+            continue;
+        }
+
+        if (*psz == '#')
+        {
+            pszPrev = psz;
+            continue;
+        }
+
+        /* new rule? */
+        if (!fMoreDeps)
+        {
+            if (*psz != ' ' && *psz != '\t' && *psz != '\0')
+            {
+                i = 0;
+                while (psz[i] != '\0')
+                {
+                    if (psz[i] == ':'
+                        && (psz[i+1] == ' '
+                            || psz[i+1] == '\t'
+                            || psz[i+1] == '\0'
+                            || (psz[i+1] == '\\' && psz[i+2] == '\0')
+                            )
+                        )
+                    {
+                        char    szTS[TS_SIZE];
+                        char *  pszCont = strchr(&psz[i], '\\');
+                        fMoreDeps = pszCont != NULL && pszCont[1] == '\0';
+
+                        /* read evt. timestamp. */
+                        szTS[0] = '\0';
+                        if (pszPrev && strlen(pszPrev) > 25 && *pszPrev == '#')
+                            strcpy(szTS, pszPrev + 2);
+
+                        psz[i] = '\0';
+                        pvRule = depAddRule(trimQuotes(trimR(psz)), NULL, NULL, szTS, TRUE);
+                        if (pvRule)
+                            ((PDEPRULE)pvRule)->fUpdated = fAppend;
+                        psz += i + 1;
+                        cch -= i + 1;
+                        break;
+                    }
+                    i++;
+                }
+            }
+            pszPrev = NULL;
+        }
+
+
+        /* more dependants */
+        if (fMoreDeps)
+        {
+            if (cch > 0 && psz[cch-1] == '\\')
+            {
+                fMoreDeps = TRUE;
+                psz[cch-1] = '\0';
+            }
+            else
+                fMoreDeps = FALSE;
+
+            /* if not duplicate rule */
+            if (pvRule != NULL)
+            {
+                psz = trimQuotes(trim(psz));
+                if (*psz != '\0')
+                    depAddDepend(pvRule, psz, options.fCheckCyclic, TRUE);
+            }
+        }
+    } /* while */
+
+
+    /* return succesfully */
+    textbufferDestroy(pvFile);
+    return TRUE;
+}
+
+/**
+ *
+ * @returns   Success indicator.
+ * @param     pszFilename           Pointer to name of the output file.
+ * @param     fWriteUpdatedOnly     If set we'll only write updated rules.
+ */
+BOOL  depWriteFile(const char *pszFilename, BOOL fWriteUpdatedOnly)
+{
+    FILE *phFile;
+    phFile = fopen(pszFilename, "w");
+    if (phFile != NULL)
+    {
+        AVLENUMDATA EnumData;
+        PDEPRULE    pdep;
+        static char szBuffer[0x10000];
+        int         iBuffer = 0;
+        int         cch;
+
+        /*
+         * Write warning on top of file.
+         */
+        fputs("#\n"
+              "# This file was automatically generated by FastDep.\n"
+              "# FastDep was written by knut st. osmundsen, and it's GPL software.\n"
+              "#\n"
+              "# THIS FILE SHOULD   N O T   BE EDITED MANUALLY!!!\n"
+              "#\n"
+              "# (As this may possibly make it unreadable for fastdep\n"
+              "#  and ruin the caching methods of FastDep.)\n"
+              "#\n"
+              "\n",
+              phFile);
+
+        /* normal dependency output */
+        pdep = (PDEPRULE)(void*)AVLBeginEnumTree((PPAVLNODECORE)(void*)&pdepTree, &EnumData, TRUE);
+        while (pdep != NULL)
+        {
+            if (!fWriteUpdatedOnly || pdep->fUpdated)
+            {
+                int cchTS = strlen(pdep->szTS);
+                int fQuoted = strpbrk(pdep->pszRule, " \t") != NULL; /* TODO/BUGBUG/FIXME: are there more special chars to look out for?? */
+
+                /* Write rule. Flush the buffer first if necessary. */
+                cch = strlen(pdep->pszRule);
+                if (iBuffer + cch*3 + fQuoted * 2 + cchTS + 9 >= sizeof(szBuffer))
+                {
+                    fwrite(szBuffer, iBuffer, 1, phFile);
+                    iBuffer = 0;
+                }
+
+                memcpy(szBuffer + iBuffer, "# ", 2);
+                memcpy(szBuffer + iBuffer + 2, pdep->szTS, cchTS);
+                iBuffer += cchTS + 2;
+                szBuffer[iBuffer++] = '\n';
+
+                if (fQuoted) szBuffer[iBuffer++] = '"';
+                iBuffer += depNameToMake(szBuffer + iBuffer, sizeof(szBuffer) - iBuffer, pdep->pszRule);
+                if (fQuoted) szBuffer[iBuffer++] = '"';
+                strcpy(szBuffer + iBuffer++, ":");
+
+                /* write rule dependants. */
+                if (pdep->papszDep != NULL)
+                {
+                    char **ppsz = pdep->papszDep;
+                    while (*ppsz != NULL)
+                    {
+                        /* flush buffer? */
+                        fQuoted = strpbrk(*ppsz, " \t") != NULL; /* TODO/BUGBUG/FIXME: are there more special chars to look out for?? */
+                        cch = strlen(*ppsz);
+                        if (iBuffer + cch*3 + fQuoted * 2 + 20 >= sizeof(szBuffer))
+                        {
+                            fwrite(szBuffer, iBuffer, 1, phFile);
+                            iBuffer = 0;
+                        }
+                        strcpy(szBuffer + iBuffer, " \\\n    ");
+                        iBuffer += 7;
+                        if (fQuoted) szBuffer[iBuffer++] = '"';
+                        iBuffer += depNameToMake(szBuffer + iBuffer, sizeof(szBuffer) - iBuffer, *ppsz);
+                        if (fQuoted) szBuffer[iBuffer++] = '"';
+
+                        /* next dependant */
+                        ppsz++;
+                    }
+                }
+
+                /* Add two new lines. Flush buffer first if necessary. */
+                if (iBuffer + CBNEWLINE*2 >= sizeof(szBuffer))
+                {
+                    fwrite(szBuffer, iBuffer, 1, phFile);
+                    iBuffer = 0;
+                }
+
+                /* add 2 linefeeds */
+                strcpy(szBuffer + iBuffer, "\n\n");
+                iBuffer += CBNEWLINE*2;
+            }
+
+            /* next rule */
+            pdep = (PDEPRULE)(void*)AVLGetNextNode(&EnumData);
+        }
+
+
+        /* flush buffer. */
+        fwrite(szBuffer, iBuffer, 1, phFile);
+
+        fclose(phFile);
+        return TRUE;
+    }
+
+    return FALSE;
+}
+
+
+/**
+ * Removes all nodes in the tree of dependencies. (pdepTree)
+ */
+void  depRemoveAll(void)
+{
+    AVLENUMDATA EnumData;
+    PDEPRULE    pdep;
+
+    pdep = (PDEPRULE)(void*)AVLBeginEnumTree((PPAVLNODECORE)(void*)&pdepTree, &EnumData, TRUE);
+    while (pdep != NULL)
+    {
+        /* free this */
+        if (pdep->papszDep != NULL)
+        {
+            char ** ppsz = pdep->papszDep;
+            while (*ppsz != NULL)
+                free(*ppsz++);
+            free(pdep->papszDep);
+        }
+        free(pdep);
+
+        /* next */
+        pdep = (PDEPRULE)(void*)AVLGetNextNode(&EnumData);
+    }
+    pdepTree = NULL;
+}
+
+
+/**
+ * Adds a rule to the list of dependant rules.
+ * @returns   Rule handle. NULL if rule exists/error.
+ * @param     pszRulePath   Pointer to rule text. Empty strings are banned!
+ *                          This string might only contain the path of the rule. (with '\\')
+ * @param     pszName       Name of the rule.
+ *                          NULL if pszRulePath contains the entire rule.
+ * @param     pszExt        Extention (without '.')
+ *                          NULL if pszRulePath or pszRulePath and pszName contains the entire rule.
+ * @param     fConvertName  If set we'll convert from makefile name to realname.
+ */
+void *depAddRule(const char *pszRulePath, const char *pszName, const char *pszExt, const char *pszTS, BOOL fConvertName)
+{
+    char     szRule[CCHMAXPATH*2];
+    PDEPRULE pNew;
+    int      cch;
+
+    /* make rulename */
+    strcpy(szRule, pszRulePath);
+    cch = strlen(szRule);
+    if (pszName != NULL)
+    {
+        strcpy(szRule + cch, pszName);
+        cch += strlen(szRule + cch);
+    }
+    if (pszExt != NULL)
+    {
+        strcat(szRule + cch++, ".");
+        strcat(szRule + cch, pszExt);
+        cch += strlen(szRule + cch);
+    }
+    if (fConvertName)
+        cch = depNameToReal(szRule);
+
+    /*
+     * Allocate a new rule structure and fill in data
+     * Note. One block for both the DEPRULE and the pszRule string.
+     */
+    pNew = malloc(sizeof(DEPRULE) + cch + 1);
+    if (pNew == NULL)
+    {
+        fprintf(stderr, "error: out of memory. (line=%d)\n", __LINE__);
+        return NULL;
+    }
+    pNew->pszRule = (char*)(void*)(pNew + 1);
+    strcpy(pNew->pszRule, szRule);
+    pNew->cDeps = 0;
+    pNew->papszDep = NULL;
+    pNew->fUpdated = TRUE;
+    pNew->avlCore.Key = pNew->pszRule;
+    strcpy(pNew->szTS, pszTS);
+
+    /* Insert the rule */
+    if (!AVLInsert((PPAVLNODECORE)(void*)&pdepTree, &pNew->avlCore))
+    {   /*
+         * The rule existed.
+         * If it's allready touched (updated) during this session
+         *   there is nothing to be done.
+         * If not force scan and it's newer than depfile-1month then
+         *   we'll use the information we've got.
+         * Reuse the node in the tree.
+         */
+        PDEPRULE    pOld = (PDEPRULE)(void*)AVLGet((PPAVLNODECORE)(void*)&pdepTree, pNew->avlCore.Key);
+        assert(pOld);
+        free(pNew);
+        if (pOld->fUpdated)
+            return NULL;
+
+        pOld->fUpdated = TRUE;
+        if (!options.fForceScan && !strcmp(pOld->szTS, pszTS) && depValidate(pOld))
+            return NULL;
+        strcpy(pOld->szTS, pszTS);
+
+        if (pOld->papszDep)
+        {
+            free(pOld->papszDep);
+            pOld->papszDep = NULL;
+        }
+        pOld->cDeps = 0;
+
+        return pOld;
+    }
+
+    return pNew;
+}
+
+
+/**
+ * Adds a dependant to a rule.
+ * @returns   Successindicator. TRUE = success.
+ *            FALSE = cyclic or out of memory.
+ * @param     pvRule        Rule handle.
+ * @param     pszDep        Pointer to dependant name
+ * @param     fCheckCyclic  When set we'll check that we're not creating an cyclic dependency.
+ * @param     fConvertName  If set we'll convert from makefile name to realname.
+ */
+BOOL  depAddDepend(void *pvRule, const char *pszDep, BOOL fCheckCyclic, BOOL fConvertName)
+{
+    PDEPRULE    pdep = (PDEPRULE)pvRule;
+    int         cchDep;
+
+    if (pszDep[0] == '\0')
+    {
+        fprintf(stderr, "warning-internal: empty dependancy filename to '%s'. Ignored.\n",
+                pdep->pszRule);
+        /* __interrupt(3); */
+        return FALSE;
+    }
+
+    if (fCheckCyclic && depCheckCyclic(pdep, pszDep))
+    {
+        fprintf(stderr, "warning: Cylic dependancy caused us to ignore '%s' in rule '%s'.\n",
+                pszDep, pdep->pszRule);
+        return FALSE;
+    }
+
+    /* allocate more array space */
+    if (((pdep->cDeps) % 48) == 0)
+    {
+        pdep->papszDep = realloc(pdep->papszDep, sizeof(char*) * (pdep->cDeps + 50));
+        if (pdep->papszDep == NULL)
+        {
+            pdep->cDeps = 0;
+            fprintf(stderr, "error: out of memory, (line=%d)\n", __LINE__);
+            return FALSE;
+        }
+    }
+
+    /* allocate string space and copy pszDep */
+    cchDep = strlen(pszDep) + 1;
+    if ((pdep->papszDep[pdep->cDeps] = malloc(cchDep)) == NULL)
+    {
+        fprintf(stderr, "error: out of memory, (line=%d)\n", __LINE__);
+        return FALSE;
+    }
+    strcpy(pdep->papszDep[pdep->cDeps], pszDep);
+
+    /* convert ^# and other stuff */
+    if (fConvertName)
+        depNameToReal(pdep->papszDep[pdep->cDeps]);
+
+    /* terminate array and increment dep count */
+    pdep->papszDep[++pdep->cDeps] = NULL;
+
+    /* successful! */
+    return TRUE;
+}
+
+
+/**
+ * Converts from makefile filename to real filename.
+ * @returns New name length.
+ * @param   pszName     Pointer to the string to make real.
+ */
+int depNameToReal(char *pszName)
+{
+    int cchNewName = strlen(pszName);
+    int iDisplacement = 0;
+
+    /*
+     * Look for '^' and '$$'.
+     */
+    while (*pszName)
+    {
+        if (    *pszName == '^'
+            ||  (*pszName == '$' && pszName[1] == '$'))
+        {
+            iDisplacement--;
+            pszName++;
+            cchNewName--;
+        }
+        if (iDisplacement)
+            pszName[iDisplacement] = *pszName;
+        pszName++;
+    }
+    pszName[iDisplacement] = '\0';
+
+    return cchNewName;
+}
+
+
+/**
+ * Converts from real filename to makefile filename.
+ * @returns New name length.
+ * @param   pszName     Output name buffer.
+ * @param   cchName     Size of name buffer.
+ * @param   pszSrc      Input name.
+ */
+int   depNameToMake(char *pszName, int cchName, const char *pszSrc)
+{
+    char *pszNameOrg = pszName;
+
+    /*
+     * Convert real name to makefile name.
+     */
+    while (*pszSrc)
+    {
+        if (    *pszSrc == '#'
+            ||  *pszSrc == '!'
+            ||  (*pszSrc == '$' && pszSrc[1] != '(')
+            ||  *pszSrc == '@'
+            ||  *pszSrc == '-'
+            ||  *pszSrc == '^'
+           /* ||  *pszSrc == '('
+            ||  *pszSrc == ')'
+            ||  *pszSrc == '{'
+            ||  *pszSrc == '}'*/)
+        {
+            if (!cchName--)
+            {
+                fprintf(stderr, "error: buffer too small, (line=%d)\n", __LINE__);
+                return pszName - pszNameOrg + strlen(pszName);
+            }
+            *pszName++ = '^';
+        }
+        if (!cchName--)
+        {
+            fprintf(stderr, "error: buffer too small, (line=%d)\n", __LINE__);
+            return pszName - pszNameOrg + strlen(pszName);
+        }
+        *pszName++ = *pszSrc++;
+    }
+    *pszName = '\0';
+
+    return pszName - pszNameOrg;
+}
+
+
+
+/**
+ * Marks the file as one which is to be rescanned next time
+ * since not all dependencies was found...
+ * @param   pvRule  Rule handle...
+ */
+void  depMarkNotFound(void *pvRule)
+{
+    ((PDEPRULE)pvRule)->szTS[0] = '\0';
+}
+
+
+/**
+ * Checks if adding this dependent will create a cyclic dependency.
+ * @returns   TRUE: Cyclic.
+ *            FALSE: Non-cylic.
+ * @param     pdepRule  Rule pszDep is to be inserted in.
+ * @param     pszDep    Depend name.
+ */
+BOOL depCheckCyclic(PDEPRULE pdepRule, const char *pszDep)
+{
+#define DEPTH_FIRST 1
+#ifdef DEPTH_FIRST
+    #define DEPTH 32
+#else
+    #define DEPTH 128
+#endif
+    #define HISTORY 256
+    char *  pszRule = pdepRule->pszRule;
+    char ** appsz[DEPTH];
+#if HISTORY
+    char *  apszHistory[HISTORY];
+    int     iHistory;
+    int     j;
+    int     iStart;
+    int     iEnd;
+    int     iCmp;
+#endif
+    PDEPRULE pdep;
+    int     i;
+
+    /* self check */
+    if (strcmp(pdepRule->pszRule, pszDep) == 0)
+        return TRUE;
+
+    /* find rule for the dep. */
+    if ((pdep = (PDEPRULE)(void*)AVLGet((PPAVLNODECORE)(void*)&pdepTree, pszDep)) == NULL
+        || pdep->papszDep == NULL)
+        return FALSE; /* no rule, or no dependents, not cyclic */
+
+    i = 1;
+    appsz[0] = pdep->papszDep;
+#ifdef HISTORY
+    iHistory = 1;
+    apszHistory[0] = pdep->pszRule;
+#endif
+    while (i > 0)
+    {
+        /* pop off element */
+        register char **  ppsz = appsz[--i];
+
+        while (*ppsz != NULL)
+        {
+            /* check if equal to the main rule */
+            if (strcmp(pszRule, *ppsz) == 0)
+                return TRUE;
+
+            /* push onto stack (ppsz is incremented in this test!) */
+            if ((pdep = (PDEPRULE)(void*)AVLGet((PPAVLNODECORE)(void*)&pdepTree, *ppsz++)) != NULL
+                && pdep->papszDep != NULL)
+            {
+                if (i >= DEPTH)
+                {
+                    fprintf(stderr, "error: too deep chain (%d). pszRule=%s  pszDep=%s\n",
+                            i, pszRule, pszDep);
+                    return FALSE;
+                }
+#ifdef HISTORY
+                /*
+                 * Check if in history, if so we'll skip it.
+                 */
+                #if 0
+                for (j = 0;  j < iHistory; j++)
+                    if (!strcmp(apszHistory[j], pdep->pszRule))
+                        break;
+                if (j != iHistory)
+                    continue;           /* found */
+
+                /*
+                 * Push into history - might concider make this binary sorted one day.
+                 */
+                if (iHistory < HISTORY)
+                    apszHistory[iHistory++] = pdep->pszRule;
+
+                #else
+
+                /*
+                 * Check if in history, if so we'll skip it.
+                 *  (Binary search)
+                 * ASSUMES: Always something in the history!
+                 */
+                iEnd = iHistory - 1;
+                iStart = 0;
+                j = iHistory / 2;
+                while (    (iCmp = strcmp(pdep->pszRule, apszHistory[j])) != 0
+                       &&   iEnd != iStart)
+                {
+                    if (iCmp < 0)
+                        iEnd = j - 1;
+                    else
+                        iStart = j + 1;
+                    if (iStart > iEnd)
+                        break;
+                    j = (iStart + iEnd) / 2;
+                }
+
+                if (!iCmp)
+                    continue;           /* found */
+
+                /*
+                 * Push into history - might concider make this binary sorted one day.
+                 */
+                if (iHistory < HISTORY)
+                {
+                    int k;
+                    if (iCmp > 0)       /* Insert after. */
+                        j++;
+                    for (k = iHistory; k > j; k--)
+                        apszHistory[k] = apszHistory[k - 1];
+                    apszHistory[j] = pdep->pszRule;
+                    iHistory++;
+                }
+
+                #endif
+
+#endif
+                /*
+                 * Push on to the stack.
+                 */
+                #ifdef DEPTH_FIRST
+                /* dept first */
+                appsz[i++] = ppsz;      /* save current posistion */
+                ppsz = pdep->papszDep;  /* process new node */
+                #else
+                /* complete current node first. */
+                appsz[i++] = pdep->papszDep;
+                #endif
+            }
+        }
+    }
+
+    return FALSE;
+}
+
+
+/**
+ * Validates that the dependencies for the file exists
+ * in the given locations. Dependants without path is ignored.
+ * @returns TRUE if all ok.
+ *          FALSE if one (or possibly more) dependants are non-existing.
+ * @param   pdepRule    Pointer to rule we're to validate.
+ */
+BOOL depValidate(PDEPRULE pdepRule)
+{
+    int i;
+
+    for (i = 0; i < pdepRule->cDeps; i++)
+    {
+        char *psz = pdepRule->papszDep[i];
+        if (    !strchr(psz, '$')
+            &&
+            (   psz[1] == ':'
+            ||  strchr(psz, '\\')
+            ||  strchr(psz, '/')
+                 )
+            )
+        {
+            /*
+             * Check existance of the file.
+             *   Search cache first
+             */
+            if (!filecacheFind(psz))
+            {
+                char szDir[CCHMAXPATH];
+
+                filePathSlash(psz, szDir);
+                if (!filecacheIsDirCached(szDir))
+                {
+                    /*
+                     * If caching of entire dirs are enabled, we'll
+                     * add the directory to the cache and search it.
+                     */
+                    if (options.fCacheSearchDirs && filecacheAddDir(szDir))
+                    {
+                        if (!filecacheFind(psz))
+                            return FALSE;
+                    }
+                    else
+                    {
+                        FILESTATUS3 fsts3;
+
+                        /* ask the OS */
+                        if (DosQueryPathInfo(psz, FIL_STANDARD, &fsts3, sizeof(fsts3)))
+                            return FALSE;
+                        /* add file to cache. */
+                        filecacheAddFile(psz);
+                    }
+                }
+                /*
+                 * Dir was cached, hence the file doesn't exist
+                 * and the we should rescan the source file.
+                 */
+                else
+                    return FALSE;
+            }
+        }
+    }
+
+    return TRUE;
+}
+
+
+/**
+ * Make a timestamp from the file data provided thru the
+ * search API.
+ * @returns Pointer to pszTS
+ * @param   pszTS       Pointer to timestamp (output).
+ * @param   pfindbuf3   Pointer to search result.
+ */
+INLINE char *depMakeTS(char *pszTS, PFILEFINDBUF3 pfindbuf3)
+{
+    sprintf(pszTS, "%04d-%02d-%02d-%02d.%02d.%02d 0x%04x%04x %d",
+            pfindbuf3->fdateLastWrite.year + 1980,
+            pfindbuf3->fdateLastWrite.month,
+            pfindbuf3->fdateLastWrite.day,
+            pfindbuf3->ftimeLastWrite.hours,
+            pfindbuf3->ftimeLastWrite.minutes,
+            pfindbuf3->ftimeLastWrite.twosecs * 2,
+            (ULONG)*(PUSHORT)(void*)&pfindbuf3->fdateCreation,
+            (ULONG)*(PUSHORT)(void*)&pfindbuf3->ftimeCreation,
+            pfindbuf3->cbFile);
+    return pszTS;
+}
+
+
+/**
+ * Adds the src additioanl dependenies to a rule.
+ * @param   pvRule  Rule to add them to.
+ * @param   pszz    Pointer to the string of strings of extra dependencies.
+ */
+void depAddSrcAddDeps(void *pvRule, const char *pszz)
+{
+    while (*pszz)
+    {
+        depAddDepend(pvRule, pszz, FALSE, FALSE);
+        pszz += strlen(pszz) + 1;
+    }
+}
+
+
+
+
+
+/*
+ * Testing purpose.
+ */
+
+#if !defined(OS2FAKE)
+#include <os2.h>
+#endif
+#ifdef OLEMANN
+#include "olemann.h"
+#endif
diff --git a/src/fastdep/fastdep.def b/src/fastdep/fastdep.def
new file mode 100644
index 0000000..6fe0b5f
--- /dev/null
+++ b/src/fastdep/fastdep.def
@@ -0,0 +1,3 @@
+NAME fastdef WINDOWCOMPAT
+DESCRIPTION "Knut''s Quick and Dirty Dependency Generator"
+
diff --git a/src/fastdep/os2fake-win.c b/src/fastdep/os2fake-win.c
new file mode 100644
index 0000000..1e9d362
--- /dev/null
+++ b/src/fastdep/os2fake-win.c
@@ -0,0 +1,297 @@
+/* $Id: os2fake-win.c 2243 2009-01-10 02:24:02Z bird $
+ *
+ * OS/2 Fake library for Win32.
+ *
+ * Copyright (c) 2001 knut st. osmundsen (knut.stange.osmundsen@mynd.no)
+ *
+ * GPL
+ *
+ */
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+#define VALIDPTR(pv) (((PVOID)pv) >= (PVOID)0x10000 && ((PVOID)pv) <= (PVOID)0xc0000000)
+
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <windows.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "os2fake.h"
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static ULONG ConvertAttributes(DWORD dwFileAttributes);
+static ULONG ConvertFileTime(PFILETIME pFileTime);
+
+/**
+ * Converts Win32 file attribute to OS/2 file attributes.
+ * @returns OS/2 fileattributes.
+ * @param   dwFileAttributes    Win32 fileattributes.
+ */
+ULONG ConvertAttributes(DWORD dwFileAttributes)
+{
+    static struct _ConvAttr
+    {
+        ULONG   ulWin;
+        ULONG   ulOs2;
+    }       aConvAttr[] =
+    {
+        {FILE_ATTRIBUTE_READONLY,   FILE_READONLY},
+        {FILE_ATTRIBUTE_HIDDEN,     FILE_HIDDEN},
+        {FILE_ATTRIBUTE_SYSTEM,     FILE_SYSTEM},
+        {FILE_ATTRIBUTE_DIRECTORY,  FILE_DIRECTORY},
+        {FILE_ATTRIBUTE_ARCHIVE,    FILE_ARCHIVED}
+    };
+    ULONG   ulOS2Attr = 0;
+    int     i;
+
+    for (i = 0; i < sizeof(aConvAttr) / sizeof(aConvAttr[0]); i++)
+        if (dwFileAttributes & aConvAttr[i].ulWin)
+            ulOS2Attr |= aConvAttr[i].ulOs2;
+
+    return ulOS2Attr;
+}
+
+
+/**
+ * Converts Win32 filetime to OS/2 filetime.
+ * @returns OS/2 filetime.
+ * @param   pFileTime   Pointer to Win32 filetime.
+ */
+ULONG ConvertFileTime(PFILETIME pFileTime)
+{
+    ULONG       ulOS2FileTime;
+    SYSTEMTIME  SystemTime;
+
+    if (   FileTimeToSystemTime(pFileTime, &SystemTime)
+        && SystemTime.wYear >= 1980 && SystemTime.wYear < (1980 + 0x7F))
+    {
+        ulOS2FileTime =    SystemTime.wDay
+                        | (SystemTime.wMonth << 5)
+                        | (((SystemTime.wYear - 1980) & 0x7F) << (5+4))
+                        | ((SystemTime.wSecond / 2) << (16))
+                        | (SystemTime.wMinute << (16+5))
+                        | (SystemTime.wHour << (16+5+6));
+    }
+    else
+        ulOS2FileTime = 0;
+
+    return ulOS2FileTime;
+}
+
+
+
+APIRET OS2ENTRY         DosQueryPathInfo(
+                            PCSZ        pszPathName,
+                            ULONG       ulInfoLevel,
+                            PVOID       pInfoBuf,
+                            ULONG       cbInfoBuf)
+{
+    APIRET  rc;                         /* Return code. */
+
+    if (!VALIDPTR(pszPathName))
+    {
+        fprintf(stderr, "DosQueryPathInfo: pszPathName is an invalid pointer - %p\n", pszPathName);
+        return ERROR_INVALID_PARAMETER;
+    }
+
+    if (!VALIDPTR(pInfoBuf))
+    {
+        fprintf(stderr, "DosQueryPathInfo: pInfoBuf is an invalid pointer - %p\n", pInfoBuf);
+        return ERROR_INVALID_PARAMETER;
+    }
+
+
+    rc = ERROR_INVALID_PARAMETER;
+    switch (ulInfoLevel)
+    {
+        case FIL_QUERYFULLNAME:
+        {
+            LPTSTR   lpDummy;
+            if (GetFullPathName(pszPathName, cbInfoBuf, pInfoBuf, &lpDummy) > 0)
+                rc = NO_ERROR;
+            else
+                rc = GetLastError();
+            break;
+        }
+
+        case FIL_STANDARD:
+            if (cbInfoBuf == sizeof(FILESTATUS3))
+            {
+                WIN32_FILE_ATTRIBUTE_DATA   fad;
+
+                if (GetFileAttributesEx(pszPathName, GetFileExInfoStandard, &fad)) //W98, NT4 and above.
+                {
+                    PFILESTATUS3    pfst3 = (PFILESTATUS3)(pInfoBuf);
+
+                    if (fad.nFileSizeHigh > 0)
+                        rc = ERROR_BAD_LENGTH;
+                    pfst3->cbFile = pfst3->cbFileAlloc = fad.nFileSizeLow;
+                    pfst3->attrFile = ConvertAttributes(fad.dwFileAttributes);
+                    *(PULONG)(&pfst3->fdateCreation) = ConvertFileTime(&fad.ftCreationTime);
+                    *(PULONG)(&pfst3->fdateLastAccess) = ConvertFileTime(&fad.ftLastAccessTime);
+                    *(PULONG)(&pfst3->fdateLastWrite) = ConvertFileTime(&fad.ftLastWriteTime);
+                    rc = NO_ERROR;
+                }
+                else
+                    rc = GetLastError();
+            }
+            else
+                fprintf(stderr, "DosQueryPathInfo: FIL_STANDARD - invalid structure size (cbInfoBuf=%d)\n", cbInfoBuf);
+            break;
+
+        default:
+            fprintf(stderr, "DosQueryPathInfo: ulInfoLevel=%d not supported\n", ulInfoLevel);
+    }
+
+    return rc;
+}
+
+
+APIRET OS2ENTRY         DosFindFirst(
+                            PCSZ        pszFileSpec,
+                            PHDIR       phdir,
+                            ULONG       flAttribute,
+                            PVOID       pFindBuf,
+                            ULONG       cbFindBuf,
+                            PULONG      pcFileNames,
+                            ULONG       ulInfoLevel)
+{
+    WIN32_FIND_DATA FindData;           /* Win32 Find data (returned by FindFirstFile) */
+    APIRET          rc;
+
+    if (!VALIDPTR(pszFileSpec))
+    {
+        fprintf(stderr, "DosFindFirst: pszFileSpec - %p\n", pszFileSpec);
+        return ERROR_INVALID_PARAMETER;
+    }
+
+    if (!VALIDPTR(phdir))
+    {
+        fprintf(stderr, "DosFindFirst: phdir - %p\n", phdir);
+        return ERROR_INVALID_PARAMETER;
+    }
+
+    if (!VALIDPTR(pFindBuf))
+    {
+        fprintf(stderr, "DosFindFirst: pfindbuf - %p\n", pFindBuf);
+        return ERROR_INVALID_PARAMETER;
+    }
+
+    if (!VALIDPTR(pcFileNames))
+    {
+        fprintf(stderr, "DosFindFirst: pcFileNames - %p\n", pcFileNames);
+        return ERROR_INVALID_PARAMETER;
+    }
+
+    if (*phdir != HDIR_CREATE)
+    {
+        fprintf(stderr, "DosFindFirst: *phdir != HDIR_CREATE - 0x%08x\n", *phdir);
+        return ERROR_INVALID_PARAMETER;
+    }
+
+    switch (ulInfoLevel)
+    {
+        case FIL_STANDARD:
+            if (cbFindBuf < sizeof(FILEFINDBUF3))
+            {
+                fprintf(stderr, "DosFindFirst: unsupported buffer size - %d\n", cbFindBuf);
+                return ERROR_INVALID_PARAMETER;
+            }
+            break;
+
+        default:
+            fprintf(stderr, "DosFindFirst: invalid infolevel %d\n", ulInfoLevel);
+            return ERROR_INVALID_PARAMETER;
+    }
+
+    *phdir = (HDIR)FindFirstFile(pszFileSpec, &FindData);
+    if (*phdir != (HDIR)INVALID_HANDLE_VALUE)
+    {
+        PFILEFINDBUF3   pfindbuf = (PFILEFINDBUF3)pFindBuf;
+
+        memcpy(pfindbuf->achName, FindData.cFileName, pfindbuf->cchName = strlen(FindData.cFileName) + 1);
+        pfindbuf->cbFile = pfindbuf->cbFileAlloc = FindData.nFileSizeHigh > 0 ? 0xffffffff : FindData.nFileSizeLow;
+        pfindbuf->attrFile = ConvertAttributes(FindData.dwFileAttributes);
+        *(PULONG)(&pfindbuf->fdateCreation) = ConvertFileTime(&FindData.ftCreationTime);
+        *(PULONG)(&pfindbuf->fdateLastAccess) = ConvertFileTime(&FindData.ftLastAccessTime);
+        *(PULONG)(&pfindbuf->fdateLastWrite) = ConvertFileTime(&FindData.ftLastWriteTime);
+        pfindbuf->oNextEntryOffset = 0;
+        *pcFileNames = 1;
+        rc = NO_ERROR;
+    }
+    else
+        rc = GetLastError();
+
+    return rc;
+}
+
+
+APIRET OS2ENTRY         DosFindNext(
+                            HDIR        hDir,
+                            PVOID       pFindBuf,
+                            ULONG       cbFindBuf,
+                            PULONG      pcFileNames)
+{
+    WIN32_FIND_DATA FindData;           /* Win32 Find data (returned by FindFirstFile) */
+    APIRET          rc;
+
+    if (!VALIDPTR(pFindBuf))
+    {
+        fprintf(stderr, "DosFindNext: pfindbuf - %p\n", pFindBuf);
+        return ERROR_INVALID_PARAMETER;
+    }
+
+    if (cbFindBuf < sizeof(FILEFINDBUF3))
+    {
+        fprintf(stderr, "DosFindNext: unsupported buffer size - %d\n", cbFindBuf);
+        return ERROR_INVALID_PARAMETER;
+    }
+
+    if (!VALIDPTR(pcFileNames))
+    {
+        fprintf(stderr, "DosFindNext: pcFileNames - %p\n", pcFileNames);
+        return ERROR_INVALID_PARAMETER;
+    }
+
+    if (FindNextFile((HANDLE)hDir, &FindData))
+    {
+        PFILEFINDBUF3   pfindbuf = (PFILEFINDBUF3)pFindBuf;
+
+        memcpy(pfindbuf->achName, FindData.cFileName, pfindbuf->cchName = strlen(FindData.cFileName) + 1);
+        pfindbuf->cbFile = pfindbuf->cbFileAlloc = FindData.nFileSizeHigh > 0 ? 0xffffffff : FindData.nFileSizeLow;
+        pfindbuf->attrFile = ConvertAttributes(FindData.dwFileAttributes);
+        *(PULONG)(&pfindbuf->fdateCreation) = ConvertFileTime(&FindData.ftCreationTime);
+        *(PULONG)(&pfindbuf->fdateLastAccess) = ConvertFileTime(&FindData.ftLastAccessTime);
+        *(PULONG)(&pfindbuf->fdateLastWrite) = ConvertFileTime(&FindData.ftLastWriteTime);
+        pfindbuf->oNextEntryOffset = 0;
+        *pcFileNames = 1;
+        rc = NO_ERROR;
+    }
+    else
+        rc = GetLastError();
+
+    return rc;
+
+}
+
+
+APIRET OS2ENTRY         DosFindClose(
+                            HDIR        hDir)
+{
+    if (FindClose((HANDLE)hDir))
+        return NO_ERROR;
+    return ERROR_INVALID_HANDLE;
+}
+
+
+
diff --git a/src/fastdep/os2fake.h b/src/fastdep/os2fake.h
new file mode 100644
index 0000000..4036fb0
--- /dev/null
+++ b/src/fastdep/os2fake.h
@@ -0,0 +1,197 @@
+/* $Id: os2fake.h 2243 2009-01-10 02:24:02Z bird $
+ *
+ * Structures, defines and function prototypes for the OS/2 fake library.
+ *
+ * Copyright (c) 2001-2009 knut st. osmundsen (knut.stange.osmundsen@mynd.no)
+ *
+ * GPL
+ *
+ */
+
+
+#ifndef _os2fake_h_
+#define _os2fake_h_
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+#ifndef OS2ENTRY
+#define OS2ENTRY
+#endif
+
+#ifndef CCHMAXPATHCOMP
+#define CCHMAXPATHCOMP          256
+#endif
+
+#ifndef CCHMAXPATH
+#define CCHMAXPATH              260
+#endif
+
+#ifndef FIL_STANDARD
+#define FIL_STANDARD            1
+#define FIL_QUERYEASIZE         2
+#define FIL_QUERYEASFROMLIST    3
+#define FIL_QUERYFULLNAME       5
+#endif
+
+#define FILE_NORMAL             0x0000
+#define FILE_READONLY           0x0001
+#define FILE_HIDDEN             0x0002
+#define FILE_SYSTEM             0x0004
+#define FILE_DIRECTORY          0x0010
+#define FILE_ARCHIVED           0x0020
+
+#ifndef HDIR_CREATE
+#define HDIR_CREATE             (-1)
+#endif
+
+#ifndef TRUE
+#define TRUE                    1
+#endif
+#ifndef FALSE
+#define FALSE                   0
+#endif
+
+#ifndef NO_ERROR
+#define NO_ERROR                0
+#endif
+
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+typedef char *          PCH;
+
+typedef char *          PSZ;
+typedef const char *    PCSZ;
+
+typedef unsigned long   ULONG;
+typedef ULONG *         PULONG;
+
+typedef unsigned short  USHORT;
+typedef USHORT *        PUSHORT;
+
+#if !defined(_WINDEF_)
+typedef unsigned int    UINT;
+typedef UINT *          PUINT;
+
+typedef unsigned char   UCHAR;
+typedef UCHAR *         PUCHAR;
+
+#if !defined(CHAR)
+typedef char            CHAR;
+typedef CHAR *          PCHAR;
+#endif
+
+typedef unsigned long   BOOL;
+typedef BOOL *          PBOOL;
+#endif
+
+#if !defined(VOID)
+typedef void            VOID;
+#endif
+#if !defined(_WINNT_) && !defined(PVOID)
+typedef VOID *          PVOID;
+#endif
+
+typedef unsigned long   HDIR;
+typedef HDIR *          PHDIR;
+
+typedef unsigned long   APIRET;
+
+
+typedef struct _FTIME   /* ftime */
+{
+#if defined(__IBMC__) || defined(__IBMCPP__)
+    UINT    twosecs : 5;
+    UINT    minutes : 6;
+    UINT    hours   : 5;
+#else
+    USHORT  twosecs : 5;
+    USHORT  minutes : 6;
+    USHORT  hours   : 5;
+#endif
+} FTIME;
+typedef FTIME *PFTIME;
+
+
+typedef struct _FDATE   /* fdate */
+{
+#if defined(__IBMC__) || defined(__IBMCPP__)
+    UINT    day     : 5;
+    UINT    month   : 4;
+    UINT    year    : 7;
+#else
+    USHORT  day     : 5;
+    USHORT  month   : 4;
+    USHORT  year    : 7;
+#endif
+} FDATE;
+typedef FDATE   *PFDATE;
+
+
+typedef struct _FILESTATUS3     /* fsts3 */
+{
+    FDATE   fdateCreation;
+    FTIME   ftimeCreation;
+    FDATE   fdateLastAccess;
+    FTIME   ftimeLastAccess;
+    FDATE   fdateLastWrite;
+    FTIME   ftimeLastWrite;
+    ULONG   cbFile;
+    ULONG   cbFileAlloc;
+    ULONG   attrFile;
+} FILESTATUS3;
+typedef FILESTATUS3 *PFILESTATUS3;
+
+typedef struct _FILEFINDBUF3    /* findbuf3 */
+{
+    ULONG   oNextEntryOffset;
+    FDATE   fdateCreation;
+    FTIME   ftimeCreation;
+    FDATE   fdateLastAccess;
+    FTIME   ftimeLastAccess;
+    FDATE   fdateLastWrite;
+    FTIME   ftimeLastWrite;
+    ULONG   cbFile;
+    ULONG   cbFileAlloc;
+    ULONG   attrFile;
+    UCHAR   cchName;
+    CHAR    achName[CCHMAXPATHCOMP];
+} FILEFINDBUF3;
+typedef FILEFINDBUF3 *PFILEFINDBUF3;
+
+
+/*******************************************************************************
+*   Function Prototypes                                                        *
+*******************************************************************************/
+APIRET OS2ENTRY         DosQueryPathInfo(
+                            PCSZ        pszPathName,
+                            ULONG       ulInfoLevel,
+                            PVOID       pInfoBuf,
+                            ULONG       cbInfoBuf);
+
+APIRET OS2ENTRY         DosFindFirst(
+                            PCSZ        pszFileSpec,
+                            PHDIR       phdir,
+                            ULONG       flAttribute,
+                            PVOID       pFindBuf,
+                            ULONG       cbFindBuf,
+                            PULONG      pcFileNames,
+                            ULONG       ulInfoLevel);
+
+APIRET OS2ENTRY         DosFindNext(
+                            HDIR        hDir,
+                            PVOID       pFindBuf,
+                            ULONG       cbFindBuf,
+                            PULONG      pcFileNames);
+
+APIRET OS2ENTRY         DosFindClose(
+                            HDIR        hDir);
+
+
+
+#endif
+
diff --git a/src/grep/.mailmap b/src/grep/.mailmap
new file mode 100644
index 0000000..22636cb
--- /dev/null
+++ b/src/grep/.mailmap
@@ -0,0 +1,12 @@
+# Map git author names and email addresses to canonical/preferred form.
+<jim@meyering.net> <meyering@fb.com>
+<jim@meyering.net> <meyering@redhat.com>
+<karl@gnu.org> <karl@tug.org>
+Paul Eggert <eggert@cs.ucla.edu> <eggert@penguin.cs.ucla.edu>
+Paul Eggert <eggert@cs.ucla.edu> <eggert@CS.UCLA.EDU>
+<eggert@cs.ucla.edu> <eggert@twinsun.com>
+<karl@gnu.org> <karl@freefriends.org>
+<bonzini@gnu.org> <pbonzini@redhat.com>
+
+# Correct misspelled last name
+Norihiro Tanaka <noritnk@kcn.ne.jp> Norihirio Tanaka <noritnk@kcn.ne.jp>
diff --git a/src/grep/.tarball-version b/src/grep/.tarball-version
new file mode 100644
index 0000000..475ba51
--- /dev/null
+++ b/src/grep/.tarball-version
@@ -0,0 +1 @@
+3.7
diff --git a/src/grep/ABOUT-NLS b/src/grep/ABOUT-NLS
new file mode 100644
index 0000000..b1de1b6
--- /dev/null
+++ b/src/grep/ABOUT-NLS
@@ -0,0 +1,1282 @@
+1 Notes on the Free Translation Project
+***************************************
+
+Free software is going international!  The Free Translation Project is
+a way to get maintainers of free software, translators, and users all
+together, so that free software will gradually become able to speak many
+languages.  A few packages already provide translations for their
+messages.
+
+   If you found this `ABOUT-NLS' file inside a distribution, you may
+assume that the distributed package does use GNU `gettext' internally,
+itself available at your nearest GNU archive site.  But you do _not_
+need to install GNU `gettext' prior to configuring, installing or using
+this package with messages translated.
+
+   Installers will find here some useful hints.  These notes also
+explain how users should proceed for getting the programs to use the
+available translations.  They tell how people wanting to contribute and
+work on translations can contact the appropriate team.
+
+1.1 INSTALL Matters
+===================
+
+Some packages are "localizable" when properly installed; the programs
+they contain can be made to speak your own native language.  Most such
+packages use GNU `gettext'.  Other packages have their own ways to
+internationalization, predating GNU `gettext'.
+
+   By default, this package will be installed to allow translation of
+messages.  It will automatically detect whether the system already
+provides the GNU `gettext' functions.  Installers may use special
+options at configuration time for changing the default behaviour.  The
+command:
+
+     ./configure --disable-nls
+
+will _totally_ disable translation of messages.
+
+   When you already have GNU `gettext' installed on your system and run
+configure without an option for your new package, `configure' will
+probably detect the previously built and installed `libintl' library
+and will decide to use it.  If not, you may have to to use the
+`--with-libintl-prefix' option to tell `configure' where to look for it.
+
+   Internationalized packages usually have many `po/LL.po' files, where
+LL gives an ISO 639 two-letter code identifying the language.  Unless
+translations have been forbidden at `configure' time by using the
+`--disable-nls' switch, all available translations are installed
+together with the package.  However, the environment variable `LINGUAS'
+may be set, prior to configuration, to limit the installed set.
+`LINGUAS' should then contain a space separated list of two-letter
+codes, stating which languages are allowed.
+
+1.2 Using This Package
+======================
+
+As a user, if your language has been installed for this package, you
+only have to set the `LANG' environment variable to the appropriate
+`LL_CC' combination.  If you happen to have the `LC_ALL' or some other
+`LC_xxx' environment variables set, you should unset them before
+setting `LANG', otherwise the setting of `LANG' will not have the
+desired effect.  Here `LL' is an ISO 639 two-letter language code, and
+`CC' is an ISO 3166 two-letter country code.  For example, let's
+suppose that you speak German and live in Germany.  At the shell
+prompt, merely execute `setenv LANG de_DE' (in `csh'),
+`export LANG; LANG=de_DE' (in `sh') or `export LANG=de_DE' (in `bash').
+This can be done from your `.login' or `.profile' file, once and for
+all.
+
+   You might think that the country code specification is redundant.
+But in fact, some languages have dialects in different countries.  For
+example, `de_AT' is used for Austria, and `pt_BR' for Brazil.  The
+country code serves to distinguish the dialects.
+
+   The locale naming convention of `LL_CC', with `LL' denoting the
+language and `CC' denoting the country, is the one use on systems based
+on GNU libc.  On other systems, some variations of this scheme are
+used, such as `LL' or `LL_CC.ENCODING'.  You can get the list of
+locales supported by your system for your language by running the
+command `locale -a | grep '^LL''.
+
+   Not all programs have translations for all languages.  By default, an
+English message is shown in place of a nonexistent translation.  If you
+understand other languages, you can set up a priority list of languages.
+This is done through a different environment variable, called
+`LANGUAGE'.  GNU `gettext' gives preference to `LANGUAGE' over `LANG'
+for the purpose of message handling, but you still need to have `LANG'
+set to the primary language; this is required by other parts of the
+system libraries.  For example, some Swedish users who would rather
+read translations in German than English for when Swedish is not
+available, set `LANGUAGE' to `sv:de' while leaving `LANG' to `sv_SE'.
+
+   Special advice for Norwegian users: The language code for Norwegian
+bokma*l changed from `no' to `nb' recently (in 2003).  During the
+transition period, while some message catalogs for this language are
+installed under `nb' and some older ones under `no', it's recommended
+for Norwegian users to set `LANGUAGE' to `nb:no' so that both newer and
+older translations are used.
+
+   In the `LANGUAGE' environment variable, but not in the `LANG'
+environment variable, `LL_CC' combinations can be abbreviated as `LL'
+to denote the language's main dialect.  For example, `de' is equivalent
+to `de_DE' (German as spoken in Germany), and `pt' to `pt_PT'
+(Portuguese as spoken in Portugal) in this context.
+
+1.3 Translating Teams
+=====================
+
+For the Free Translation Project to be a success, we need interested
+people who like their own language and write it well, and who are also
+able to synergize with other translators speaking the same language.
+Each translation team has its own mailing list.  The up-to-date list of
+teams can be found at the Free Translation Project's homepage,
+`http://translationproject.org/', in the "Teams" area.
+
+   If you'd like to volunteer to _work_ at translating messages, you
+should become a member of the translating team for your own language.
+The subscribing address is _not_ the same as the list itself, it has
+`-request' appended.  For example, speakers of Swedish can send a
+message to `sv-request@li.org', having this message body:
+
+     subscribe
+
+   Keep in mind that team members are expected to participate
+_actively_ in translations, or at solving translational difficulties,
+rather than merely lurking around.  If your team does not exist yet and
+you want to start one, or if you are unsure about what to do or how to
+get started, please write to `coordinator@translationproject.org' to
+reach the coordinator for all translator teams.
+
+   The English team is special.  It works at improving and uniformizing
+the terminology in use.  Proven linguistic skills are praised more than
+programming skills, here.
+
+1.4 Available Packages
+======================
+
+Languages are not equally supported in all packages.  The following
+matrix shows the current state of internationalization, as of June
+2010.  The matrix shows, in regard of each package, for which languages
+PO files have been submitted to translation coordination, with a
+translation percentage of at least 50%.
+
+     Ready PO files       af am an ar as ast az be be@latin bg bn_IN bs ca
+                        +--------------------------------------------------+
+     a2ps               |                       []                      [] |
+     aegis              |                                                  |
+     ant-phone          |                                                  |
+     anubis             |                                                  |
+     aspell             |                []                             [] |
+     bash               |                                                  |
+     bfd                |                                                  |
+     bibshelf           |                []                                |
+     binutils           |                                                  |
+     bison              |                                                  |
+     bison-runtime      |                []                                |
+     bluez-pin          | []             []                                |
+     bombono-dvd        |                                                  |
+     buzztard           |                                                  |
+     cflow              |                                                  |
+     clisp              |                                                  |
+     coreutils          |                                   []          [] |
+     cpio               |                                                  |
+     cppi               |                                                  |
+     cpplib             |                                               [] |
+     cryptsetup         |                                                  |
+     dfarc              |                                                  |
+     dialog             |                             []                [] |
+     dico               |                                                  |
+     diffutils          |                                               [] |
+     dink               |                                                  |
+     doodle             |                                                  |
+     e2fsprogs          |                                               [] |
+     enscript           |                                               [] |
+     exif               |                                                  |
+     fetchmail          |                                               [] |
+     findutils          |                                   []             |
+     flex               |                                               [] |
+     freedink           |                                                  |
+     gas                |                                                  |
+     gawk               |                []                             [] |
+     gcal               |                                               [] |
+     gcc                |                                                  |
+     gettext-examples   | []             []                 []          [] |
+     gettext-runtime    |                                   []          [] |
+     gettext-tools      |                                   []          [] |
+     gip                |                                   []             |
+     gjay               |                                                  |
+     gliv               |                                   []             |
+     glunarclock        |                []                 []             |
+     gnubiff            |                                                  |
+     gnucash            |                                               [] |
+     gnuedu             |                                                  |
+     gnulib             |                                                  |
+     gnunet             |                                                  |
+     gnunet-gtk         |                                                  |
+     gnutls             |                                                  |
+     gold               |                                                  |
+     gpe-aerial         |                                                  |
+     gpe-beam           |                                                  |
+     gpe-bluetooth      |                                                  |
+     gpe-calendar       |                                                  |
+     gpe-clock          |                []                                |
+     gpe-conf           |                                                  |
+     gpe-contacts       |                                                  |
+     gpe-edit           |                                                  |
+     gpe-filemanager    |                                                  |
+     gpe-go             |                                                  |
+     gpe-login          |                                                  |
+     gpe-ownerinfo      |                []                                |
+     gpe-package        |                                                  |
+     gpe-sketchbook     |                                                  |
+     gpe-su             |                []                                |
+     gpe-taskmanager    |                []                                |
+     gpe-timesheet      |                []                                |
+     gpe-today          |                []                                |
+     gpe-todo           |                                                  |
+     gphoto2            |                                                  |
+     gprof              |                                   []             |
+     gpsdrive           |                                                  |
+     gramadoir          |                                                  |
+     grep               |                                                  |
+     grub               |                []                             [] |
+     gsasl              |                                                  |
+     gss                |                                                  |
+     gst-plugins-bad    |                                   []             |
+     gst-plugins-base   |                                   []             |
+     gst-plugins-good   |                                   []             |
+     gst-plugins-ugly   |                                   []             |
+     gstreamer          | []                                []          [] |
+     gtick              |                                                  |
+     gtkam              |                       []                         |
+     gtkorphan          |                                   []             |
+     gtkspell           | []             []     []                         |
+     gutenprint         |                                                  |
+     hello              |                                   []             |
+     help2man           |                                                  |
+     hylafax            |                                                  |
+     idutils            |                                                  |
+     indent             |                                   []          [] |
+     iso_15924          |                                                  |
+     iso_3166           | []          []        []          []  []   [] [] |
+     iso_3166_2         |                                                  |
+     iso_4217           |                                                  |
+     iso_639            |             [] []     []              []         |
+     iso_639_3          |                                                  |
+     jwhois             |                                                  |
+     kbd                |                                                  |
+     keytouch           |                                               [] |
+     keytouch-editor    |                                                  |
+     keytouch-keyboa... |                                               [] |
+     klavaro            |          []                                      |
+     latrine            |                                                  |
+     ld                 |                                   []             |
+     leafpad            |                                   []          [] |
+     libc               |                                   []          [] |
+     libexif            |                       ()                         |
+     libextractor       |                                                  |
+     libgnutls          |                                                  |
+     libgpewidget       |                                                  |
+     libgpg-error       |                                                  |
+     libgphoto2         |                                                  |
+     libgphoto2_port    |                                                  |
+     libgsasl           |                                                  |
+     libiconv           |                                   []             |
+     libidn             |                                                  |
+     lifelines          |                                                  |
+     liferea            |                             []                [] |
+     lilypond           |                                                  |
+     linkdr             |          []                                      |
+     lordsawar          |                                                  |
+     lprng              |                                                  |
+     lynx               |                                               [] |
+     m4                 |                                                  |
+     mailfromd          |                                                  |
+     mailutils          |                                                  |
+     make               |                                                  |
+     man-db             |                                                  |
+     man-db-manpages    |                                                  |
+     minicom            |                                                  |
+     mkisofs            |                                                  |
+     myserver           |                                                  |
+     nano               |                                   []          [] |
+     opcodes            |                                                  |
+     parted             |                                                  |
+     pies               |                                                  |
+     popt               |                                                  |
+     psmisc             |                                                  |
+     pspp               |                                               [] |
+     pwdutils           |                                                  |
+     radius             |                                               [] |
+     recode             |                       []                      [] |
+     rosegarden         |                                                  |
+     rpm                |                                                  |
+     rush               |                                                  |
+     sarg               |                                                  |
+     screem             |                                                  |
+     scrollkeeper       |                    [] []                      [] |
+     sed                |                []                             [] |
+     sharutils          |                                   []          [] |
+     shishi             |                                                  |
+     skencil            |                                                  |
+     solfege            |                                                  |
+     solfege-manual     |                                                  |
+     soundtracker       |                                                  |
+     sp                 |                                                  |
+     sysstat            |                                                  |
+     tar                |                                   []             |
+     texinfo            |                                                  |
+     tin                |                                                  |
+     unicode-han-tra... |                                                  |
+     unicode-transla... |                                                  |
+     util-linux-ng      |                                               [] |
+     vice               |                                                  |
+     vmm                |                                                  |
+     vorbis-tools       |                                                  |
+     wastesedge         |                                                  |
+     wdiff              |                                                  |
+     wget               |                       []                      [] |
+     wyslij-po          |                                                  |
+     xchat              |                []     []          []          [] |
+     xdg-user-dirs      | []    []    [] []     []    []    []  []      [] |
+     xkeyboard-config   |                                   []          [] |
+                        +--------------------------------------------------+
+                          af am an ar as ast az be be@latin bg bn_IN bs ca
+                           6  0  1  2  3 19   1 10     3    28   3    1 38
+
+                          crh cs da  de  el en en_GB en_ZA eo es et eu fa
+                        +-------------------------------------------------+
+     a2ps               |     [] []  []  []     []            [] []       |
+     aegis              |        []  []                       []          |
+     ant-phone          |        []  ()                                   |
+     anubis             |        []  []                                   |
+     aspell             |     [] []  []         []            []          |
+     bash               |     []                           [] []          |
+     bfd                |                                     []          |
+     bibshelf           |        []  []                       []          |
+     binutils           |                                     []          |
+     bison              |            []  []                               |
+     bison-runtime      |        []  []  []                      []       |
+     bluez-pin          |     [] []  []  []                [] []          |
+     bombono-dvd        |        []                                       |
+     buzztard           |     [] []  []                                   |
+     cflow              |        []  []                                   |
+     clisp              |        []  []     []                []          |
+     coreutils          |     [] []  []                          []       |
+     cpio               |                                                 |
+     cppi               |                                                 |
+     cpplib             |        []  []                       []          |
+     cryptsetup         |            []                                   |
+     dfarc              |        []  []                       []          |
+     dialog             |        []  []                    [] []    []    |
+     dico               |                                                 |
+     diffutils          |     [] []  []  []                [] []          |
+     dink               |        []  []                       []          |
+     doodle             |            []                                   |
+     e2fsprogs          |     []     []                       []          |
+     enscript           |        []  []         []                        |
+     exif               |     () []  []                                   |
+     fetchmail          |     [] []  ()  []     []            []          |
+     findutils          |     [] []  []                                   |
+     flex               |            []                       []          |
+     freedink           |        []  []                       []          |
+     gas                |                                     []          |
+     gawk               |        []  []                       []          |
+     gcal               |                                     []          |
+     gcc                |            []                       []          |
+     gettext-examples   |            []  []                [] []          |
+     gettext-runtime    |        []  []                    [] []          |
+     gettext-tools      |            []                       []    []    |
+     gip                |        []  []                       []    []    |
+     gjay               |            []                                   |
+     gliv               |     [] []  []                                   |
+     glunarclock        |        []  []                                   |
+     gnubiff            |            ()                                   |
+     gnucash            |     []     ()  ()     ()            ()          |
+     gnuedu             |        []                           []          |
+     gnulib             |            []                       []          |
+     gnunet             |                                                 |
+     gnunet-gtk         |        []                                       |
+     gnutls             |     []     []                                   |
+     gold               |                                     []          |
+     gpe-aerial         |     [] []  []                       []          |
+     gpe-beam           |     [] []  []                       []          |
+     gpe-bluetooth      |        []  []                                   |
+     gpe-calendar       |        []                                       |
+     gpe-clock          |     [] []  []                       []          |
+     gpe-conf           |     [] []  []                                   |
+     gpe-contacts       |        []  []                       []          |
+     gpe-edit           |        []  []                                   |
+     gpe-filemanager    |        []  []                       []          |
+     gpe-go             |     [] []  []                       []          |
+     gpe-login          |        []  []                                   |
+     gpe-ownerinfo      |     [] []  []                       []          |
+     gpe-package        |        []  []                       []          |
+     gpe-sketchbook     |     [] []  []                       []          |
+     gpe-su             |     [] []  []                       []          |
+     gpe-taskmanager    |     [] []  []                       []          |
+     gpe-timesheet      |     [] []  []                       []          |
+     gpe-today          |     [] []  []                       []          |
+     gpe-todo           |        []  []                       []          |
+     gphoto2            |     [] []  ()         []            []    []    |
+     gprof              |        []  []                       []          |
+     gpsdrive           |        []                           [] []       |
+     gramadoir          |        []  []                    []             |
+     grep               |     []                                          |
+     grub               |        []  []                                   |
+     gsasl              |            []                                   |
+     gss                |                                                 |
+     gst-plugins-bad    |     [] []  []                       []    []    |
+     gst-plugins-base   |     [] []  []                       []    []    |
+     gst-plugins-good   |     [] []  []  []                   []    []    |
+     gst-plugins-ugly   |     [] []  []  []                   []    []    |
+     gstreamer          |     [] []  []                       []    []    |
+     gtick              |        []  ()                    []             |
+     gtkam              |     [] []  ()                    [] []          |
+     gtkorphan          |     [] []  []                    []             |
+     gtkspell           |     [] []  []  []                [] []    []    |
+     gutenprint         |        []  []         []                        |
+     hello              |        []  []                    [] []          |
+     help2man           |            []                                   |
+     hylafax            |            []                       []          |
+     idutils            |        []  []                                   |
+     indent             |     [] []  []                    [] [] [] []    |
+     iso_15924          |        []      ()                [] []          |
+     iso_3166           | []  [] []  []  ()                [] [] [] ()    |
+     iso_3166_2         |                ()                               |
+     iso_4217           |     [] []  []  ()                   [] []       |
+     iso_639            | []  [] []  []  ()                [] []          |
+     iso_639_3          | []                                              |
+     jwhois             |                                     []          |
+     kbd                |     [] []  []  []                   []          |
+     keytouch           |        []  []                                   |
+     keytouch-editor    |        []  []                                   |
+     keytouch-keyboa... |        []                                       |
+     klavaro            |     [] []  []                    []             |
+     latrine            |        []  ()                                   |
+     ld                 |        []                           []          |
+     leafpad            |     [] []  []  []                   []    []    |
+     libc               |     [] []  []                       []          |
+     libexif            |        []  []         ()                        |
+     libextractor       |                                                 |
+     libgnutls          |     []                                          |
+     libgpewidget       |        []  []                                   |
+     libgpg-error       |     []     []                                   |
+     libgphoto2         |        []  ()                                   |
+     libgphoto2_port    |        []  ()                             []    |
+     libgsasl           |                                                 |
+     libiconv           |     [] []  []                    []    []       |
+     libidn             |     []     []                    []             |
+     lifelines          |        []  ()                                   |
+     liferea            |     []     []  []                   []    []    |
+     lilypond           |     []     []                       []          |
+     linkdr             |        []  []                       []          |
+     lordsawar          |        []                                       |
+     lprng              |                                                 |
+     lynx               |     [] []  []                          []       |
+     m4                 |     [] []  []  []                               |
+     mailfromd          |                                                 |
+     mailutils          |                                     []          |
+     make               |        []  []                       []          |
+     man-db             |                                                 |
+     man-db-manpages    |                                                 |
+     minicom            |     [] []  []                       []          |
+     mkisofs            |                                                 |
+     myserver           |                                                 |
+     nano               |            []                       []    []    |
+     opcodes            |            []                       []          |
+     parted             |     []     []                                   |
+     pies               |                                                 |
+     popt               |     [] []  []                    [] []          |
+     psmisc             |     []     []                             []    |
+     pspp               |                                     []          |
+     pwdutils           |        []                                       |
+     radius             |                                     []          |
+     recode             |     [] []  []  []                [] []          |
+     rosegarden         |     ()     ()                       ()          |
+     rpm                |        []  []                       []          |
+     rush               |                                                 |
+     sarg               |                                                 |
+     screem             |                                                 |
+     scrollkeeper       |     [] []  []         []            []          |
+     sed                |     []     []  []                [] [] []       |
+     sharutils          |        []  []                       [] []       |
+     shishi             |                                                 |
+     skencil            |        []  ()                       []          |
+     solfege            |            []                    []    []       |
+     solfege-manual     |                                  []    []       |
+     soundtracker       |        []  []                       []          |
+     sp                 |            []                                   |
+     sysstat            |        []  []                             []    |
+     tar                |     []     []                          [] []    |
+     texinfo            |            []                    [] []          |
+     tin                |            []                          []       |
+     unicode-han-tra... |                                                 |
+     unicode-transla... |                                                 |
+     util-linux-ng      |     [] []  []                       []          |
+     vice               |        ()  ()                                   |
+     vmm                |            []                                   |
+     vorbis-tools       |     []                           []             |
+     wastesedge         |        []                                       |
+     wdiff              |            []                       []          |
+     wget               |     []     []                          []       |
+     wyslij-po          |                                                 |
+     xchat              |     []     []  []                   [] []       |
+     xdg-user-dirs      | []  [] []  []  []                [] [] [] []    |
+     xkeyboard-config   | []  [] []  []                    [] []          |
+                        +-------------------------------------------------+
+                          crh cs da  de  el en en_GB en_ZA eo es et eu fa
+                           5  64 105 117 18  1   8     0   28 89 18 19  0
+
+                          fi  fr  ga gl gu he hi hr hu hy id  is it ja ka kn
+                        +----------------------------------------------------+
+     a2ps               | []  []                          []        []       |
+     aegis              |     []                                 []          |
+     ant-phone          |     []                                 []          |
+     anubis             | []  []                          []     []          |
+     aspell             |     []  []                      []     []          |
+     bash               | []  []                          []        []       |
+     bfd                | []  []                          []                 |
+     bibshelf           | []  []  []                      []     []          |
+     binutils           | []  []                          []                 |
+     bison              | []  []  []                      []                 |
+     bison-runtime      | []  []  []                      []     [] []       |
+     bluez-pin          | []  []  []                [] [] []  []    []       |
+     bombono-dvd        | []                                                 |
+     buzztard           |                                 []                 |
+     cflow              | []      []                      []                 |
+     clisp              |     []                                             |
+     coreutils          |     []  []                []    []     []          |
+     cpio               | []  []  []                      []                 |
+     cppi               | []  []                                             |
+     cpplib             | []  []                          []                 |
+     cryptsetup         |     []                          []     []          |
+     dfarc              | []  []                                 []          |
+     dialog             |     []  [] []                   []  [] [] []       |
+     dico               |                                                    |
+     diffutils          | []  []  [] []    []       []    []     [] []       |
+     dink               |     []                                             |
+     doodle             |         []                             []          |
+     e2fsprogs          |     []                          []                 |
+     enscript           |     []  []             []       []                 |
+     exif               | []  []                          []  [] [] []       |
+     fetchmail          |     []                          []     [] []       |
+     findutils          | []  []  []                []    []     []          |
+     flex               | []  []  []                                         |
+     freedink           | []  []                          []                 |
+     gas                |     []                          []                 |
+     gawk               |     []  []       []             []     () []       |
+     gcal               |     []                                             |
+     gcc                |                                 []                 |
+     gettext-examples   | []  []  []                []    []     [] []       |
+     gettext-runtime    | []  []  []                      []     [] []       |
+     gettext-tools      |     []                          []     [] []       |
+     gip                | []  []  [] []                   []        []       |
+     gjay               | []                                                 |
+     gliv               | []  ()                                             |
+     glunarclock        | []      []                []    []                 |
+     gnubiff            |     ()                          []     ()          |
+     gnucash            | ()  ()           ()       ()           () []       |
+     gnuedu             |     []                                 []          |
+     gnulib             | []  []  []                []           [] []       |
+     gnunet             |                                                    |
+     gnunet-gtk         |     []                                             |
+     gnutls             |     []                                 []          |
+     gold               | []                              []                 |
+     gpe-aerial         | []  []                          []                 |
+     gpe-beam           | []  []                          []        []       |
+     gpe-bluetooth      | []                              []     [] []       |
+     gpe-calendar       | []                                        []       |
+     gpe-clock          | []  []                    []    []        []       |
+     gpe-conf           | []  []                          []        []       |
+     gpe-contacts       | []  []                          []        []       |
+     gpe-edit           | []                              []        []       |
+     gpe-filemanager    | []                        []    []        []       |
+     gpe-go             | []  []                    []    []        []       |
+     gpe-login          | []                              []        []       |
+     gpe-ownerinfo      | []  []                    []    []        []       |
+     gpe-package        | []                              []        []       |
+     gpe-sketchbook     | []  []                          []        []       |
+     gpe-su             | []  []     []             []    []        []       |
+     gpe-taskmanager    | []  []                    []    []        []       |
+     gpe-timesheet      | []  []  []                      []        []       |
+     gpe-today          | []  []  [] []             []    []        []       |
+     gpe-todo           | []                              []        []       |
+     gphoto2            | []  []                    []    []     [] []       |
+     gprof              | []  []  []                      []                 |
+     gpsdrive           |            []                   []     []          |
+     gramadoir          |     []  []                      []                 |
+     grep               | []                                     []          |
+     grub               | []                        []    []     []          |
+     gsasl              | []  []  []                      []     []          |
+     gss                | []  []  []                      []     []          |
+     gst-plugins-bad    | []  []                    []    []     [] []       |
+     gst-plugins-base   | []  []                    []    []     [] []       |
+     gst-plugins-good   | []  []                    []    []     [] []       |
+     gst-plugins-ugly   | []  []                    []    []     [] []       |
+     gstreamer          | []  []                    []    []     []          |
+     gtick              | []  []  []                      []     []          |
+     gtkam              |     []                    []    []     [] []       |
+     gtkorphan          |     []                          []     []          |
+     gtkspell           | []  []  [] []             [] [] []     [] []       |
+     gutenprint         | []  []                    []           []          |
+     hello              | []      []                      []                 |
+     help2man           | []  []                                             |
+     hylafax            |                                 []                 |
+     idutils            | []  []  []                []    []     []          |
+     indent             | []  []  [] []             []    []     [] []       |
+     iso_15924          | []  ()                          []     []          |
+     iso_3166           | []  ()  [] [] [] [] [] [] []    []     [] []       |
+     iso_3166_2         |     ()                    []    []     []          |
+     iso_4217           | []  ()                    []    []     [] []       |
+     iso_639            | []  ()  []    []          []    []     [] []    [] |
+     iso_639_3          |     ()                                 []       [] |
+     jwhois             | []  []                    []    []     []          |
+     kbd                |     []                          []                 |
+     keytouch           | []  []  []                []    []     []          |
+     keytouch-editor    | []      []                []    []     []          |
+     keytouch-keyboa... | []      []                []    []     []          |
+     klavaro            |            []             []                       |
+     latrine            | []                              []     []          |
+     ld                 | []  []  []                      []                 |
+     leafpad            | []  []  []       []       []    []     [] ()       |
+     libc               | []  []     []                   []        []       |
+     libexif            |                                        []          |
+     libextractor       |                                                    |
+     libgnutls          |     []                                 []          |
+     libgpewidget       | []      []                      []        []       |
+     libgpg-error       |     []                                 []          |
+     libgphoto2         |     []                                 [] []       |
+     libgphoto2_port    |     []                                 [] []       |
+     libgsasl           | []  []  []                      []     []          |
+     libiconv           | []  []  []                      []     [] []       |
+     libidn             | []  []                          []     []          |
+     lifelines          |     ()                                             |
+     liferea            |     []                    []           [] []       |
+     lilypond           | []  []                                             |
+     linkdr             | []               []    [] []           []          |
+     lordsawar          |                                                    |
+     lprng              |                                 []                 |
+     lynx               |     []                    []    []     [] []       |
+     m4                 | []  []  [] []                   []        []       |
+     mailfromd          |                                                    |
+     mailutils          |     []                          []                 |
+     make               | []  []  [] []    []    []       []     [] []       |
+     man-db             |                                 []     []          |
+     man-db-manpages    |                                 []                 |
+     minicom            | []  []                    []    []        []       |
+     mkisofs            | []  []                          []     []          |
+     myserver           |                                                    |
+     nano               | []  []  [] []             []           []          |
+     opcodes            | []  []  []                      []                 |
+     parted             |     []                          []     [] []       |
+     pies               |                                                    |
+     popt               | []  []  [] []             []    []  [] [] []       |
+     psmisc             | []  []                          []                 |
+     pspp               |                                                    |
+     pwdutils           |     []                          []                 |
+     radius             |     []                          []                 |
+     recode             | []  []  [] []    []       []    []     []          |
+     rosegarden         | ()  ()                          ()     () ()       |
+     rpm                |                                 []        []       |
+     rush               |                                                    |
+     sarg               |     []                                             |
+     screem             |                                        [] []       |
+     scrollkeeper       | []                        []    []     []          |
+     sed                | []  []  [] []             []    []     [] []       |
+     sharutils          | []  []  []                []    []     [] []       |
+     shishi             |     []                                             |
+     skencil            |     []                                             |
+     solfege            | []  []     []                          []          |
+     solfege-manual     |     []     []                                      |
+     soundtracker       |     []                                 []          |
+     sp                 |     []                                    ()       |
+     sysstat            | []  []                          []     [] []       |
+     tar                | []  []  []                []    []     [] []       |
+     texinfo            |     []                          []     [] []       |
+     tin                |     []                                             |
+     unicode-han-tra... |                                                    |
+     unicode-transla... |     []  []                                         |
+     util-linux-ng      | []  []                    []    []     [] []       |
+     vice               |     ()                    ()           ()          |
+     vmm                |     []                                             |
+     vorbis-tools       |                                 []                 |
+     wastesedge         |     ()                                 ()          |
+     wdiff              | []                                                 |
+     wget               | []  []  []             [] []    []     [] []       |
+     wyslij-po          | []  []                          []                 |
+     xchat              | []  []        []    []    []    []     [] []    [] |
+     xdg-user-dirs      | []  []  [] [] [] [] []    []    []  [] [] []    [] |
+     xkeyboard-config   | []  []                    []    []     []          |
+                        +----------------------------------------------------+
+                          fi  fr  ga gl gu he hi hr hu hy id  is it ja ka kn
+                          105 121 53 20  4  8  3  5 53  2 120  5 84 67  0  4
+
+                          ko ku ky lg lt lv mk ml mn mr ms mt nb nds ne
+                        +-----------------------------------------------+
+     a2ps               |                               []              |
+     aegis              |                                               |
+     ant-phone          |                                               |
+     anubis             |                               []    []        |
+     aspell             |                         []                    |
+     bash               |                                               |
+     bfd                |                                               |
+     bibshelf           |                []             []              |
+     binutils           |                                               |
+     bison              |                               []              |
+     bison-runtime      |       []    [] []             []    []        |
+     bluez-pin          |    [] []    [] []             []              |
+     bombono-dvd        |                                               |
+     buzztard           |                                               |
+     cflow              |                                               |
+     clisp              |                                               |
+     coreutils          |          []                                   |
+     cpio               |                                               |
+     cppi               |                                               |
+     cpplib             |                                               |
+     cryptsetup         |                                               |
+     dfarc              |                   []                          |
+     dialog             |    []       [] []             []    []        |
+     dico               |                                               |
+     diffutils          |                []             []              |
+     dink               |                                               |
+     doodle             |                                               |
+     e2fsprogs          |                                               |
+     enscript           |                                               |
+     exif               |                []                             |
+     fetchmail          |                                               |
+     findutils          |                                               |
+     flex               |                                               |
+     freedink           |                                     []        |
+     gas                |                                               |
+     gawk               |                                               |
+     gcal               |                                               |
+     gcc                |                                               |
+     gettext-examples   |       []       []             [] []           |
+     gettext-runtime    | []                                            |
+     gettext-tools      | []                                            |
+     gip                |                []             []              |
+     gjay               |                                               |
+     gliv               |                                               |
+     glunarclock        |                []                             |
+     gnubiff            |                                               |
+     gnucash            | ()          ()                      ()     () |
+     gnuedu             |                                               |
+     gnulib             |                                               |
+     gnunet             |                                               |
+     gnunet-gtk         |                                               |
+     gnutls             |                               []              |
+     gold               |                                               |
+     gpe-aerial         |                []                             |
+     gpe-beam           |                []                             |
+     gpe-bluetooth      |                []                []           |
+     gpe-calendar       |                []                             |
+     gpe-clock          | []    []       []             [] []           |
+     gpe-conf           | []             []                             |
+     gpe-contacts       | []             []                             |
+     gpe-edit           |                []                             |
+     gpe-filemanager    | []             []                             |
+     gpe-go             | []             []                []           |
+     gpe-login          |                []                             |
+     gpe-ownerinfo      |                []             []              |
+     gpe-package        | []             []                             |
+     gpe-sketchbook     | []             []                             |
+     gpe-su             | []    []       []             [] [] []        |
+     gpe-taskmanager    | [] [] []       []             [] []           |
+     gpe-timesheet      |                []             []              |
+     gpe-today          |       []       []             [] []           |
+     gpe-todo           |                []                   []        |
+     gphoto2            |                                               |
+     gprof              |                               []              |
+     gpsdrive           |                                               |
+     gramadoir          |                                               |
+     grep               |                                               |
+     grub               |                                               |
+     gsasl              |                                               |
+     gss                |                                               |
+     gst-plugins-bad    |             [] []                [] []        |
+     gst-plugins-base   |             [] []                             |
+     gst-plugins-good   |                []                []           |
+     gst-plugins-ugly   |             [] []             [] [] []        |
+     gstreamer          |                                               |
+     gtick              |                                               |
+     gtkam              |                                     []        |
+     gtkorphan          |                []                      []     |
+     gtkspell           |       []    [] []       []    []    [] []     |
+     gutenprint         |                                               |
+     hello              | []             []             []              |
+     help2man           |                                               |
+     hylafax            |                                               |
+     idutils            |                                               |
+     indent             |                                               |
+     iso_15924          |             [] []                             |
+     iso_3166           | [] []       () [] [] []    []       []        |
+     iso_3166_2         |                                               |
+     iso_4217           |             []                      []        |
+     iso_639            |                      []    []                 |
+     iso_639_3          |                            []                 |
+     jwhois             |                []                             |
+     kbd                |                                               |
+     keytouch           |                []                             |
+     keytouch-editor    |                []                             |
+     keytouch-keyboa... |                []                             |
+     klavaro            |                                     []        |
+     latrine            |                []                             |
+     ld                 |                                               |
+     leafpad            | []          [] []                             |
+     libc               | []                                            |
+     libexif            |                                               |
+     libextractor       |                                               |
+     libgnutls          |                               []              |
+     libgpewidget       |                []             []              |
+     libgpg-error       |                                               |
+     libgphoto2         |                                               |
+     libgphoto2_port    |                                               |
+     libgsasl           |                                               |
+     libiconv           |                                               |
+     libidn             |                                               |
+     lifelines          |                                               |
+     liferea            |                                               |
+     lilypond           |                                               |
+     linkdr             |                                               |
+     lordsawar          |                                               |
+     lprng              |                                               |
+     lynx               |                                               |
+     m4                 |                                               |
+     mailfromd          |                                               |
+     mailutils          |                                               |
+     make               | []                                            |
+     man-db             |                                               |
+     man-db-manpages    |                                               |
+     minicom            |                                     []        |
+     mkisofs            |                                               |
+     myserver           |                                               |
+     nano               |                               []    []        |
+     opcodes            |                                               |
+     parted             |                                               |
+     pies               |                                               |
+     popt               | []             []                   []        |
+     psmisc             |                                               |
+     pspp               |                                               |
+     pwdutils           |                                               |
+     radius             |                                               |
+     recode             |                                               |
+     rosegarden         |                                               |
+     rpm                |                                               |
+     rush               |                                               |
+     sarg               |                                               |
+     screem             |                                               |
+     scrollkeeper       |                                     []     [] |
+     sed                |                                               |
+     sharutils          |                                               |
+     shishi             |                                               |
+     skencil            |                                               |
+     solfege            |                                     []        |
+     solfege-manual     |                                               |
+     soundtracker       |                                               |
+     sp                 |                                               |
+     sysstat            |                []                             |
+     tar                |       []                                      |
+     texinfo            |                                     []        |
+     tin                |                                               |
+     unicode-han-tra... |                                               |
+     unicode-transla... |                                               |
+     util-linux-ng      |                                               |
+     vice               |                                               |
+     vmm                |                                               |
+     vorbis-tools       |                                               |
+     wastesedge         |                                               |
+     wdiff              |                                               |
+     wget               |             []                                |
+     wyslij-po          |                                               |
+     xchat              | []             [] []                          |
+     xdg-user-dirs      | [] []       [] [] []       []       [] []     |
+     xkeyboard-config   | []    []    []                                |
+                        +-----------------------------------------------+
+                          ko ku ky lg lt lv mk ml mn mr ms mt nb nds ne
+                          20  5 10  1 13 48  4  2  2  4 24 10 20  3   1
+
+                          nl  nn or pa pl  ps pt pt_BR ro ru rw sk sl sq sr
+                        +---------------------------------------------------+
+     a2ps               | []           []     []  []   [] []       []    [] |
+     aegis              | []                      []      []                |
+     ant-phone          |                         []   []                   |
+     anubis             | []           []                 []                |
+     aspell             | []                           [] []    [] []       |
+     bash               | []                                    []          |
+     bfd                |                                 []                |
+     bibshelf           | []  []                                            |
+     binutils           |                                 []    []          |
+     bison              | []           []                 []                |
+     bison-runtime      | []           []     []  []   [] []       []       |
+     bluez-pin          | []           []         []   [] []    [] []    [] |
+     bombono-dvd        |     []                          ()                |
+     buzztard           | []  []                                            |
+     cflow              |              []                                   |
+     clisp              | []                              []                |
+     coreutils          | []           []     []  []      []       []       |
+     cpio               | []           []                 []                |
+     cppi               |              []                                   |
+     cpplib             | []                                                |
+     cryptsetup         | []                                                |
+     dfarc              |              []                                   |
+     dialog             | []           []         []      []                |
+     dico               |              []                                   |
+     diffutils          | []           []         []   [] []             [] |
+     dink               | ()                                                |
+     doodle             | []                                          []    |
+     e2fsprogs          | []           []                                   |
+     enscript           | []                      []   [] []       []       |
+     exif               | []           []              [] ()    []          |
+     fetchmail          | []           []                 []          []    |
+     findutils          | []           []     []          []       []       |
+     flex               | []           []         []   [] []                |
+     freedink           | []           []                                   |
+     gas                |                                                   |
+     gawk               | []           []         []   []                   |
+     gcal               |                                                   |
+     gcc                |                                                [] |
+     gettext-examples   | []           []     []       [] []    [] []    [] |
+     gettext-runtime    | []  []       []     []       [] []    [] []    [] |
+     gettext-tools      |              []              [] []    [] []    [] |
+     gip                | []           []                 []    []       [] |
+     gjay               |                                                   |
+     gliv               | []           []         []   [] []    []          |
+     glunarclock        | []                      []   []       []       [] |
+     gnubiff            | []                           ()                   |
+     gnucash            | []           ()         ()      ()                |
+     gnuedu             | []                                                |
+     gnulib             | []           []                 []       []       |
+     gnunet             |                                                   |
+     gnunet-gtk         |                                                   |
+     gnutls             | []           []                                   |
+     gold               |                                                   |
+     gpe-aerial         | []                  []  []   [] []       []    [] |
+     gpe-beam           | []                  []  []   [] []       []    [] |
+     gpe-bluetooth      | []                      []                        |
+     gpe-calendar       |                         []      []       []    [] |
+     gpe-clock          | []                  []  []   [] []    [] []    [] |
+     gpe-conf           | []                  []  []   [] []    [] []       |
+     gpe-contacts       |                         []   [] []       []    [] |
+     gpe-edit           | []           []                          []       |
+     gpe-filemanager    | []                              []       []       |
+     gpe-go             | []           []         []   [] []    [] []    [] |
+     gpe-login          | []                      []                        |
+     gpe-ownerinfo      | []                  []  []   [] []    [] []    [] |
+     gpe-package        | []                                       []       |
+     gpe-sketchbook     | []                  []  []   [] []       []    [] |
+     gpe-su             | []                  []  []   [] []    [] []    [] |
+     gpe-taskmanager    | []                  []  []   [] []    [] []    [] |
+     gpe-timesheet      | []                  []  []   [] []    [] []    [] |
+     gpe-today          | []                  []  []   [] []    [] []    [] |
+     gpe-todo           | []                      []      []       []    [] |
+     gphoto2            | []        [] []         []   [] []    []       [] |
+     gprof              | []                      []   []                   |
+     gpsdrive           | []                              []                |
+     gramadoir          | []                                    []          |
+     grep               | []           []                 []    []          |
+     grub               | []           []                 []                |
+     gsasl              | []           []                       []       [] |
+     gss                |              []              []       []          |
+     gst-plugins-bad    | []           []         []      []    []    []    |
+     gst-plugins-base   | []           []         []      []    []          |
+     gst-plugins-good   | []           []         []      []    []          |
+     gst-plugins-ugly   | []           []         []      []    [] []       |
+     gstreamer          | []           []         []      []    []          |
+     gtick              | []                              []    []          |
+     gtkam              | []        [] []         []      []    []          |
+     gtkorphan          | []                                                |
+     gtkspell           | []           []     []  []   [] []    [] [] [] [] |
+     gutenprint         | []                              []                |
+     hello              | []           []                       [] []       |
+     help2man           |              []                 []                |
+     hylafax            | []                                                |
+     idutils            | []           []         []   [] []                |
+     indent             | []           []         []   [] []    []       [] |
+     iso_15924          | []           []                 []       []       |
+     iso_3166           | []  [] [] [] []     ()  []   [] [] [] [] [] [] [] |
+     iso_3166_2         | []           []                          []       |
+     iso_4217           | []  []       []     []          [] []    []    [] |
+     iso_639            | []     [] [] []                 [] [] [] []    [] |
+     iso_639_3          |        [] []                                      |
+     jwhois             | []           []         []   []                   |
+     kbd                | []           []              []                   |
+     keytouch           | []           []                       []          |
+     keytouch-editor    | []           []                       []          |
+     keytouch-keyboa... | []           []                       []          |
+     klavaro            | []                      []                        |
+     latrine            |              []                 []                |
+     ld                 |                                                   |
+     leafpad            | []  []       []     []  []      []    [] []    [] |
+     libc               | []           []                 []    []          |
+     libexif            | []           []         ()            []          |
+     libextractor       |                                                   |
+     libgnutls          | []           []                                   |
+     libgpewidget       | []           []                          []       |
+     libgpg-error       |              []              []                   |
+     libgphoto2         | []           []                                   |
+     libgphoto2_port    | []           []         []      []    []          |
+     libgsasl           | []           []              []       []       [] |
+     libiconv           | []           []                       [] []    [] |
+     libidn             | []           []                                   |
+     lifelines          | []           []                                   |
+     liferea            | []           []     []  []   [] ()    ()    []    |
+     lilypond           | []                                                |
+     linkdr             | []                  []          []                |
+     lordsawar          |                                                   |
+     lprng              |              []                                   |
+     lynx               | []                      []      []                |
+     m4                 | []           []         []   [] []                |
+     mailfromd          |              []                                   |
+     mailutils          |              []                                   |
+     make               | []           []         []      []                |
+     man-db             | []           []                 []                |
+     man-db-manpages    | []           []                 []                |
+     minicom            |              []         []   [] []                |
+     mkisofs            | []           []                 []                |
+     myserver           |                                                   |
+     nano               | []           []         []      []                |
+     opcodes            | []                           []                   |
+     parted             | []           []                 []    []          |
+     pies               |              []                                   |
+     popt               | []           []     []          []                |
+     psmisc             | []           []                 []                |
+     pspp               | []                      []                        |
+     pwdutils           |              []                                   |
+     radius             | []           []                 []                |
+     recode             | []           []     []  []   [] []    [] []       |
+     rosegarden         |              ()                 ()                |
+     rpm                | []           []     []                            |
+     rush               | []           []                                   |
+     sarg               |                                                   |
+     screem             |                                                   |
+     scrollkeeper       | []  []       []              [] []    []    [] [] |
+     sed                | []           []     []  []   [] []    [] []    [] |
+     sharutils          | []           []                 []             [] |
+     shishi             |              []                                   |
+     skencil            |                     []  []                        |
+     solfege            | []           []         []      []                |
+     solfege-manual     | []           []         []                        |
+     soundtracker       |                                       []          |
+     sp                 |                                                   |
+     sysstat            | []           []         []      []                |
+     tar                | []           []                 []       []       |
+     texinfo            | []           []              [] []                |
+     tin                |                                 []                |
+     unicode-han-tra... |                                                   |
+     unicode-transla... |                                                   |
+     util-linux-ng      | []           []         []      []       []       |
+     vice               | []                                                |
+     vmm                | []                                                |
+     vorbis-tools       | []           []                                   |
+     wastesedge         | []                                                |
+     wdiff              | []           []                                   |
+     wget               | []           []     []  []      []    [] []       |
+     wyslij-po          | []  []       []                                   |
+     xchat              | []        [] []     []          []    [] [] [] [] |
+     xdg-user-dirs      | []  [] [] [] []  [] []  []   [] []    [] [] [] [] |
+     xkeyboard-config   | []           []                 []                |
+                        +---------------------------------------------------+
+                          nl  nn or pa pl  ps pt pt_BR ro ru rw sk sl sq sr
+                          135 10  4  7 105  1 29  62   47 91  3 54 46  9 37
+
+                          sv  sw ta te tg th tr uk vi  wa zh_CN zh_HK zh_TW
+                        +---------------------------------------------------+
+     a2ps               | []              [] [] [] []                       | 27
+     aegis              |                          []                       |  9
+     ant-phone          | []                 []    []      []               |  9
+     anubis             | []                 [] [] []                       | 15
+     aspell             |                       [] []  []                   | 20
+     bash               | []                    [] []                       | 12
+     bfd                |                          []                       |  6
+     bibshelf           | []                       []      []               | 16
+     binutils           |                       [] []                       |  8
+     bison              | []                       []                       | 12
+     bison-runtime      | []              []    [] []      []          []   | 29
+     bluez-pin          | []              [] [] [] []  []  []          []   | 37
+     bombono-dvd        |                          []                       |  4
+     buzztard           |                          []                       |  7
+     cflow              |                       [] []      []               |  9
+     clisp              |                                                   | 10
+     coreutils          | []                    [] []      []               | 22
+     cpio               | []                 [] [] []      []          []   | 13
+     cppi               |                       [] []                       |  5
+     cpplib             | []                 [] [] []      []          []   | 14
+     cryptsetup         | []                       []                       |  7
+     dfarc              |                          []                       |  9
+     dialog             | []  []          []       []  []  []          []   | 30
+     dico               |                       []                          |  2
+     diffutils          | []                 [] [] []      []          []   | 30
+     dink               |                                                   |  4
+     doodle             | []                       []                       |  7
+     e2fsprogs          | []                 []    []                       | 11
+     enscript           | []                 [] [] []                       | 17
+     exif               | []                       []      []               | 16
+     fetchmail          |                    []    []      []               | 17
+     findutils          | []                 [] [] []      []               | 20
+     flex               | []                 []    []                  []   | 15
+     freedink           |                          []                       | 10
+     gas                |                    []                             |  4
+     gawk               | []                 []    []      []               | 18
+     gcal               | []                 []                             |  5
+     gcc                | []                 []            []               |  7
+     gettext-examples   | []                 [] [] []      []    []    []   | 34
+     gettext-runtime    | []                 [] [] []      []    []    []   | 29
+     gettext-tools      | []                 [] [] []      []          []   | 22
+     gip                | []                       []      []          []   | 22
+     gjay               |                          []                       |  3
+     gliv               | []                 []    []                       | 14
+     glunarclock        | []                       []  []  []          []   | 19
+     gnubiff            | []                       []                       |  4
+     gnucash            |                    () [] ()      []          ()   | 10
+     gnuedu             |                          []                  []   |  7
+     gnulib             | []                    [] []      []               | 16
+     gnunet             |                          []                       |  1
+     gnunet-gtk         | []                 []    []                       |  5
+     gnutls             | []                       []      []               | 10
+     gold               |                          []                       |  4
+     gpe-aerial         | []                       []      []               | 18
+     gpe-beam           | []                       []      []               | 19
+     gpe-bluetooth      | []                       []      []               | 13
+     gpe-calendar       | []                       []  []  []               | 12
+     gpe-clock          | []                 []    []  []  []               | 28
+     gpe-conf           | []                       []  []  []               | 20
+     gpe-contacts       | []                       []      []               | 17
+     gpe-edit           | []                       []      []               | 12
+     gpe-filemanager    | []                       []  []  []               | 16
+     gpe-go             | []                 []    []  []  []               | 25
+     gpe-login          | []                       []      []               | 11
+     gpe-ownerinfo      | []                 []    []      []          []   | 25
+     gpe-package        | []                       []      []               | 13
+     gpe-sketchbook     | []                       []      []               | 20
+     gpe-su             | []                 []    []  []  []               | 30
+     gpe-taskmanager    | []                 []    []  []  []               | 29
+     gpe-timesheet      | []                 []    []      []          []   | 25
+     gpe-today          | []                 []    []  []  []          []   | 30
+     gpe-todo           | []                       []  []  []               | 17
+     gphoto2            | []                    [] []      []          []   | 24
+     gprof              | []                 []    []                       | 15
+     gpsdrive           | []                       []      []               | 11
+     gramadoir          | []                       []      []               | 11
+     grep               |                 []       []      []               | 10
+     grub               | []                       []      []               | 14
+     gsasl              | []                       []      []          []   | 14
+     gss                | []                       []      []               | 11
+     gst-plugins-bad    | []                 []    []      []               | 26
+     gst-plugins-base   | []                 [] [] []      []               | 24
+     gst-plugins-good   | []                 []    []      []               | 24
+     gst-plugins-ugly   | []                 [] [] []      []               | 29
+     gstreamer          | []                    [] []      []               | 22
+     gtick              |                       [] []      []               | 13
+     gtkam              | []                       []      []               | 20
+     gtkorphan          | []                       []      []               | 14
+     gtkspell           | []              [] [] [] []  []  []    []    []   | 45
+     gutenprint         | []                                                | 10
+     hello              | []              [] []    []      []          []   | 21
+     help2man           | []                       []                       |  7
+     hylafax            |                          []                       |  5
+     idutils            | []                 []    []      []               | 17
+     indent             | []                 [] [] []      []          []   | 30
+     iso_15924          |                 ()    [] ()      []          []   | 16
+     iso_3166           | []        []    () [] [] ()  []  []    []    ()   | 53
+     iso_3166_2         |                 ()    [] ()      []               |  9
+     iso_4217           | []              () [] [] ()      []    []         | 26
+     iso_639            | []     [] []    ()    [] ()  []  []    []    []   | 38
+     iso_639_3          |        []                ()                       |  8
+     jwhois             | []                 []    []      []          []   | 16
+     kbd                | []                 [] [] []      []               | 15
+     keytouch           | []                       []      []               | 16
+     keytouch-editor    | []                       []      []               | 14
+     keytouch-keyboa... | []                       []      []               | 14
+     klavaro            |                          []                       | 11
+     latrine            |                    []    []      []               | 10
+     ld                 | []                 []    []                  []   | 11
+     leafpad            | []                 [] [] []      []          []   | 33
+     libc               | []                 []    []      []          []   | 21
+     libexif            |                          []      ()               |  7
+     libextractor       |                          []                       |  1
+     libgnutls          | []                       []      []               |  9
+     libgpewidget       | []                       []      []               | 14
+     libgpg-error       | []                       []      []               |  9
+     libgphoto2         |                       [] []                       |  8
+     libgphoto2_port    | []                    [] []                  []   | 14
+     libgsasl           | []                       []      []               | 13
+     libiconv           | []                       []  []  []               | 21
+     libidn             | ()                       []      []               | 11
+     lifelines          | []                                                |  4
+     liferea            | []                 []            []               | 21
+     lilypond           |                          []                       |  7
+     linkdr             | []                 []    []      []          []   | 17
+     lordsawar          |                                                   |  1
+     lprng              |                          []                       |  3
+     lynx               | []                 [] [] []                       | 17
+     m4                 | []                       []      []          []   | 19
+     mailfromd          |                       [] []                       |  3
+     mailutils          |                          []                       |  5
+     make               | []                 []    []      []               | 21
+     man-db             | []                       []      []               |  8
+     man-db-manpages    |                                                   |  4
+     minicom            | []                       []                       | 16
+     mkisofs            |                          []      []               |  9
+     myserver           |                                                   |  0
+     nano               | []                       []      []          []   | 21
+     opcodes            | []                 []    []                       | 11
+     parted             | []                 [] [] []                  []   | 15
+     pies               |                       [] []                       |  3
+     popt               | []              [] []    []      []          []   | 27
+     psmisc             | []                       []                       | 11
+     pspp               |                                                   |  4
+     pwdutils           | []                       []                       |  6
+     radius             |                       [] []                       |  9
+     recode             | []                 []    []      []               | 28
+     rosegarden         | ()                                                |  0
+     rpm                | []                       []                  []   | 11
+     rush               |                       [] []                       |  4
+     sarg               |                                                   |  1
+     screem             |                          []                       |  3
+     scrollkeeper       | []                 [] [] []                  []   | 27
+     sed                | []                 []    []      []          []   | 30
+     sharutils          | []                 []    []      []          []   | 22
+     shishi             |                          []                       |  3
+     skencil            | []                       []                       |  7
+     solfege            | []                 []    []      []               | 16
+     solfege-manual     |                    []                             |  8
+     soundtracker       | []                 []    []                       |  9
+     sp                 |                    []                             |  3
+     sysstat            |                          []      []               | 15
+     tar                | []                 [] [] []      []          []   | 23
+     texinfo            | []                 [] [] []      []               | 17
+     tin                |                                                   |  4
+     unicode-han-tra... |                                                   |  0
+     unicode-transla... |                                                   |  2
+     util-linux-ng      | []                 [] [] []                       | 20
+     vice               | ()                 ()                             |  1
+     vmm                |                          []                       |  4
+     vorbis-tools       |                          []                       |  6
+     wastesedge         |                                                   |  2
+     wdiff              | []                       []                       |  7
+     wget               | []                 []    []      []          []   | 26
+     wyslij-po          |                       [] []                       |  8
+     xchat              | []              []    [] []      []          []   | 36
+     xdg-user-dirs      | []     [] []    [] [] [] []      []    []    []   | 63
+     xkeyboard-config   | []                    [] []                       | 22
+                        +---------------------------------------------------+
+       85 teams           sv  sw ta te tg th tr uk vi  wa zh_CN zh_HK zh_TW
+      178 domains         119  1  3  3  0 10 65 51 155 17  98     7    41    2618
+
+   Some counters in the preceding matrix are higher than the number of
+visible blocks let us expect.  This is because a few extra PO files are
+used for implementing regional variants of languages, or language
+dialects.
+
+   For a PO file in the matrix above to be effective, the package to
+which it applies should also have been internationalized and
+distributed as such by its maintainer.  There might be an observable
+lag between the mere existence a PO file and its wide availability in a
+distribution.
+
+   If June 2010 seems to be old, you may fetch a more recent copy of
+this `ABOUT-NLS' file on most GNU archive sites.  The most up-to-date
+matrix with full percentage details can be found at
+`http://translationproject.org/extra/matrix.html'.
+
+1.5 Using `gettext' in new packages
+===================================
+
+If you are writing a freely available program and want to
+internationalize it you are welcome to use GNU `gettext' in your
+package.  Of course you have to respect the GNU Library General Public
+License which covers the use of the GNU `gettext' library.  This means
+in particular that even non-free programs can use `libintl' as a shared
+library, whereas only free software can use `libintl' as a static
+library or use modified versions of `libintl'.
+
+   Once the sources are changed appropriately and the setup can handle
+the use of `gettext' the only thing missing are the translations.  The
+Free Translation Project is also available for packages which are not
+developed inside the GNU project.  Therefore the information given above
+applies also for every other Free Software Project.  Contact
+`coordinator@translationproject.org' to make the `.pot' files available
+to the translation teams.
+
diff --git a/src/grep/AUTHORS b/src/grep/AUTHORS
new file mode 100644
index 0000000..a4ce768
--- /dev/null
+++ b/src/grep/AUTHORS
@@ -0,0 +1,63 @@
+  Copyright (C) 1992, 1997-2002, 2004-2021 Free Software Foundation, Inc.
+
+  Copying and distribution of this file, with or without modification,
+  are permitted in any medium without royalty provided the copyright
+  notice and this notice are preserved.
+
+Mike Haertel wrote the main program and the dfa and kwset matchers.
+
+Isamu Hasegawa wrote the POSIX regular expression matcher, which is
+part of the GNU C Library and is distributed as part of GNU grep for
+use on non-GNU systems.  Ulrich Drepper, Paul Eggert, Paolo Bonzini,
+Stanislav Brabec, Assaf Gordon, Jakub Jelinek, Jim Meyering, Arnold
+Robbins, Andreas Schwab and Florian Weimer also contributed to this
+matcher.
+
+Arthur David Olson contributed the heuristics for finding fixed substrings
+at the end of dfa.c.
+
+Henry Spencer wrote the original test suite from which grep's was derived.
+Scott Anderson invented the Khadafy test.
+
+David MacKenzie wrote the automatic configuration software used to
+produce the configure script.
+
+Authors of the replacements for standard library routines are identified
+in the corresponding source files.
+
+The idea of using Boyer-Moore type algorithms to quickly filter out
+non-matching text before calling the regexp matcher was originally due
+to James Woods.  He also contributed some code to early versions of
+GNU grep.
+
+Mike Haertel would like to thank Andrew Hume for many fascinating
+discussions of string searching issues over the years.  Hume and
+Sunday's excellent paper on fast string searching describes some of
+the history of the subject, as well as providing exhaustive
+performance analysis of various implementation alternatives.
+The inner loop of GNU grep is similar to Hume & Sunday's recommended
+"Tuned Boyer Moore" inner loop.  See: Hume A, Sunday D.
+Fast string searching. Software Pract Exper. 1991;21(11):1221-48.
+https://doi.org/10.1002/spe.4380211105
+
+Arnold Robbins contributed to improve dfa.[ch]. In fact
+it came straight from gawk-3.0.3 with small editing and fixes.
+
+Many folks contributed.  See THANKS; if I omitted someone please
+send me email.
+
+Alain Magloire maintained GNU grep until version 2.5e.
+
+Bernhard "Bero" Rosenkränzer <bero@arklinux.org> maintained GNU grep until
+version 2.5.1, ie. from Sep 2001 till 2003.
+
+Stepan Kasal <kasal@ucw.cz> maintained GNU grep since Feb 2004.
+
+Tony Abou-Assaleh <taa@acm.org> maintains GNU grep since Oct 2007.
+
+Jim Meyering <jim@meyering.net> and Paolo Bonzini <bonzini@gnu.org>
+began maintaining GNU grep in Nov 2009.  Paolo bowed out in 2012.
+
+;; Local Variables:
+;; coding: utf-8
+;; End:
diff --git a/src/grep/COPYING b/src/grep/COPYING
new file mode 100644
index 0000000..f288702
--- /dev/null
+++ b/src/grep/COPYING
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
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diff --git a/src/grep/ChangeLog b/src/grep/ChangeLog
new file mode 100644
index 0000000..3151cc2
--- /dev/null
+++ b/src/grep/ChangeLog
@@ -0,0 +1,12542 @@
+2021-08-14  Jim Meyering  <meyering@fb.com>
+
+	version 3.7
+	* NEWS: Record release date.
+
+2021-08-09  Jim Meyering  <meyering@fb.com>
+
+	tests: provide an awk-based seq replacement
+	...so we can continue to use seq, but the wrapper when needed.
+	* tests/init.cfg (seq): Some systems lask seq.
+	Provide a replacement.
+	* tests/hash-collision-perf: Use seq once again.
+	* tests/long-pattern-perf: Likewise. And remove a comment about seq.
+
+2021-08-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: simplify EGexecute
+	* src/dfasearch.c (EGexecute): Remove a label and goto.
+	This also makes the machine code a bit shorter, on x86-64 gcc.
+
+	grep: simplify data movement slightly
+	* src/grep.c (fillbuf): Simplify movement of saved data.
+
+	grep: pointer-integer cast nit
+	* src/grep.c (ALIGN_TO): When converting pointers to unsigned
+	integers, convert to uintptr_t not size_t, as size_t in theory
+	might be too narrow.
+
+	tests: use awk, not seq
+	Portability problem reported by Dagobert Michelsen in:
+	https://lists.gnu.org/r/grep-devel/2021-08/msg00004.html
+	* tests/hash-collision-perf, tests/long-pattern-perf:
+	Don’t assume seq is installed; use awk instead.
+
+2021-08-08  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest
+
+	build: update gnulib to latest
+
+2021-08-06  Kevin Locke  <kevin@kevinlocke.name>
+
+	doc: usage: --group-separator/--no-group-separator
+	* src/grep.c (usage): Document --group-separator
+	and --no-group-separator.
+
+	doc: man: add --group-separator/--no-group-separator
+	* doc/grep.in.1:
+	Add copy of docs for --group-separator from doc/grep.texi.
+	Add copy of docs for --no-group-separator from doc/grep.texi.
+
+2021-08-06  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest
+
+2021-06-19  Mateusz Okulus  <mmokulus@gmail.com>
+
+	doc: note that -H is a GNU extension in man page, too
+	* doc/grep.in.1 (-H): Mention that this is a GNU extension.
+
+2021-06-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2021-06-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2021-06-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: improve examples and wording
+	* doc/grep.texi (The Backslash Character and Special Expressions)
+	(Usage): Improve doc (Bug#48948).
+
+2021-01-31  Jim Meyering  <meyering@fb.com>
+
+	doc: man: fix -L description and improve -l's
+	* doc/grep.texi (-L): Remove erroneous sentence about stopping early.
+	With -L, grep cannot stop scanning early.
+	(-l): Tweak existing wording.
+	* doc/grep.in.1: Remove the -L sentence here, too.
+	(-l): Copy the sentence from grep.texi, to clarify: it's only per-file
+	scanning that stops upon match.  Reported by Robert Bruntz
+	in http://debbugs.gnu.org/46179
+
+2021-01-05  Jim Meyering  <meyering@fb.com>
+
+	build: avoid long-string warnings in gnulib tests
+	* configure.ac (GNULIB_TEST_WARN_CFLAGS): Add
+	-Woverlength-strings to avoid clang warnings.
+
+2021-01-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: further clarify regexp structure
+	* doc/grep.texi (Fundamental Structure)
+	(Back-references and Subexpressions, Basic vs Extended):
+	Further clarifications.
+
+	maint: copy bootstrap, tests/init.sh from Gnulib
+
+	doc: update grep.texi cite to 2021
+
+	maint: run "make update-copyright"
+
+	build: update gnulib submodule to latest
+
+2020-12-30  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest
+	* gnulib: update for clang-10 warning warning-avoidance
+	fixes in hash and regex-tests.
+
+	maint: add parentheses to avoid new clang-10 warning
+	* src/dfasearch.c (regex_compile): Parenthesize arith-OR vs
+	ternary, to placate clang-10.
+
+2020-12-29  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: clarify special chars and }
+	* doc/grep.texi (Fundamental Structure)
+	(Character Classes and Bracket Expressions)
+	(The Backslash Character and Special Expressions, Anchoring)
+	(Basic vs Extended): Clarify which characters are special,
+	and why \ is needed before } in grep even though } is not special.
+	Use Posix terminology for ordinary and special characters and for
+	interval expressions.
+
+2020-12-29  Marek Suppa  <mr@shu.io>
+
+	doc: fix missing right curly brace
+	* doc/grep.texi (Basic vs Extended Regular Expressions): Mention that
+	the right curly brace (}) meta-character must be backslash-escaped.
+	It had been omitted from the list.
+
+2020-12-25  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest
+
+	grep: use of --unix-byte-offsets (-u) now elicits a warning
+	* NEWS (Change in behavior): Mention this.
+	* src/grep.c (main): Warn about each use of obsolete
+	--unix-byte-offsets (-u).
+	* doc/grep.in.1 (-u): Remove its documentation.
+
+2020-12-23  Helge Kreutzmann  <debian@helgefjell.de>
+
+	doc: adjust man page syntax
+	* doc/grep.in.1: Mark some manual names with B<...>.
+	Mark PATTERNS with I<...>.
+	Drop final period in SEE ALSO.
+	With suggestions from of several members of the manpage-l10n
+	translation community.  This resolves https://bugs.gnu.org/45353
+
+2020-11-26  Jim Meyering  <meyering@fb.com>
+
+	grep: avoid performance regression with many patterns
+	* src/grep.c (hash_pattern): Switch from PJW to DJB2, to avoid an
+	O(N) to O(N^2) performance regression due to hash collisions with
+	patterns from e.g., seq 500000|tr 0-9 A-J
+	Reported by Frank Heckenbach in https://bugs.gnu.org/44754
+	* NEWS (Bug fixes): Mention it.
+	* tests/hash-collision-perf: New file.
+	* tests/Makefile.am (TESTS): Add it.
+
+	build: update gnulib to latest for warning fixes
+	* gnulib: Update submodule to latest.
+	* src/grep.c (printf_errno): Reflect gnulib's renaming: change
+	_GL_ATTRIBUTE_FORMAT_PRINTF to
+	_GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD
+
+	tests: enable warnings for the gnulib-tests subdir
+	* gnulib-tests/Makefile.am (AM_CFLAGS): Enable gnulib
+	warning options for these tests.
+	* configure.ac (GNULIB_TEST_WARN_CFLAGS): Disable the same three
+	warning options that coreutils does, and a few more for GCC11.
+
+2020-11-08  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 3.6
+	* NEWS: Record release date.
+
+2020-11-05  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest for test improvements
+
+2020-11-03  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest for C++-ready dfa.h and test-verify.c fix
+
+2020-11-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: remove GREP_OPTIONS
+	* NEWS: Mention this.
+	* doc/grep.in.1:
+	Remove GREP_OPTIONS documentation.
+	* doc/grep.texi (Environment Variables):
+	Move GREP_OPTIONS stuff into a “no longer implemented� paragraph.
+	* src/grep.c (prepend_args, prepend_default_options): Remove.
+	(main): Do not look at GREP_OPTIONS.
+	* tests/Makefile.am (TESTS_ENVIRONMENTS):
+	* tests/init.cfg (vars_): Remove GREP_OPTIONS.
+
+2020-11-01  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: use RE_NO_SUB when calling regex solely to check syntax
+	* src/dfasearch.c (regex_compile): New parameter. All callers changed.
+	(GEAcompile): Move setting syntax for regex into regex_compile()
+	function.  This addresses a performance problem exposed by extreme
+	regular expressions, as described in https://bugs.gnu.org/43862 .
+
+	tests: add the test for bugfix in gnulib's dfa
+	* tests/ere.tests: Add new test.
+
+2020-11-01  Jim Meyering  <meyering@fb.com>
+
+	grep: avoid erroneous matches for e.g., a+a+a+
+	* gnulib: Update to latest, for dfa's invalid-merge fix.
+	* NEWS (Bug fixes): Mention this.
+
+2020-10-11  Jim Meyering  <meyering@fb.com>
+
+	grep: -P: report input filename upon PCRE execution failure
+	Without this, it could be tedious to determine which input
+	file evokes a PCRE-execution-time failure.
+	* src/pcresearch.c (Pexecute): When failing, include the
+	error-provoking file name in the diagnostic.
+	* src/grep.c (input_filename): Make extern, since used above.
+	* src/search.h (input_filename): Declare.
+	* tests/filename-lineno.pl: Test for this.
+	($no_pcre): Factor out.
+	* NEWS (Bug fixes): Mention this.
+
+2020-10-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: minor kwset cleanups
+	* src/kwsearch.c (Fexecute):
+	Assume C99 to put declarations nearer uses.
+	* src/kwset.c (bmexec): Omit unnecessary test.
+	* src/kwset.h (struct kwsmatch): Make OFFSET and SIZE individual
+	elements, not arrays of size 1 (a revenant of an earlier API).
+	All uses changed.
+
+2020-10-11  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: remove unused code
+	* src/kwsearch.c (Fcompile, Fexecute): Remove unused code.  No longer these
+	are used after commit 016e590a8198009bce0e1078f6d4c7e037e2df3c.
+
+2020-10-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2020-10-05  Jim Meyering  <meyering@fb.com>
+
+	tests: correct filename-lineno.pl
+	* tests/filename-lineno.pl: Remove a stray envvar
+	that somehow slipped into expected output string.
+
+2020-10-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: fix tests when PCRE is not used
+	* tests/Makefile.am (TESTS_ENVIRONMENT):
+	Set PATH before setting PCRE_WORKS, so that the latter test
+	uses the just-built grep.
+	* tests/filename-lineno.pl (invalid-re-P-paren)
+	(invalid-re-P-star-paren): Adjust non-PCRE case to match
+	recently-changed behavior.
+
+	build: update gnulib submodule to latest
+
+2020-10-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: document --include/--exclude better
+	Problem reported by John Ruckstuhl (Bug#43782).
+	* doc/grep.texi (File and Directory Selection):
+	Document what happens if contradictory options are given,
+	or if no option matches a file name.
+	* doc/grep.in.1:
+
+2020-10-01  Jim Meyering  <meyering@fb.com>
+
+	maint: add technically-required quotes
+	* configure.ac: Quote args of AC_CONFIG_AUX_DIR, AC_CONFIG_SRCDIR
+	and AC_CHECK_FUNCS_ONCE.
+
+2020-09-28  Jim Meyering  <meyering@fb.com>
+
+	tests: restore deleted -P tests
+	v3.4-almost-45-g8577dda deleted these two -P-using tests because a
+	grep built without PCRE support would fail those tests. This sets
+	an envvar with the equivalent of the result from the require_pcre_
+	function and restores the now-guarded tests. Tested by running this:
+	  ./configure --disable-perl-regexp && make check
+	* tests/Makefile.am (PCRE_WORKS): Set this envvar.
+	* tests/filename-lineno.pl: Restore invalid-re-P-paren and
+	invalid-re-P-star-paren, now each with a guard.
+
+2020-09-27  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 3.5
+	* NEWS: Record release date.
+
+	maint: avoid autoconf warnings * configure.ac (AC_HEADER_STDC): Remove.  It's been assumed for ages. * m4/pcre.m4 (gl_FUNC_PCRE): Use AS_HELP_STRING, not AC_HELP_STRING.
+
+	build: update gnulib to latest
+
+2020-09-26  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest
+
+	tests: skip stack-overflow test when built with ASAN
+	* tests/stack-overflow: Skip this test when the binary was built
+	with ASAN, to avoid spurious failures.
+
+2020-09-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+	build: update gnulib submodule to latest
+
+2020-09-24  Jim Meyering  <meyering@fb.com>
+
+	tests: fix surrogate-pair test to work on 16-bit wchar_t systems
+	* tests/surrogate-pair: Avoid new failure on systems with
+	16-bit wchar_t.  Detect the condition and exit before the
+	otherwise-failing tests.  Remove the now-incorrect in-loop
+	test for that alternate failure mode.  This was exposed by
+	testing on gcc119.fsffrance.org, a power8 AIX 7.2 system.
+
+2020-09-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: don't assume PCRE in tests
+	* tests/filename-lineno.pl: Remove invalid-re-P-paren and
+	invalid-re-P-star-paren as they assume PCRE support, which
+	causes a false alarm "grep: Perl matching not supported in a
+	--disable-perl-regexp build" on platforms without PCRE.
+
+	grep: pacify Sun C 5.15
+	This suppresses a false alarm '"grep.c", line 720: warning:
+	initializer will be sign-extended: -1'.
+	* src/grep.c (uword_max): New static constant.
+	(initialize_unibyte_mask): Use it.
+
+2020-09-23  Paul Eggert  <eggert@cs.ucla.edu>
+	    Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: fix more Turkish-eyes bugs
+	Fix more bugs recently uncovered by Norihiro Tanaka (Bug#43577).
+	* NEWS: Mention new bug report.
+	* src/grep.c (ok_fold): New static var.
+	(setup_ok_fold): New function.
+	(fgrep_icase_charlen): Reject single-byte characters
+	if they match some multibyte characters when ignoring case.
+	This part of the patch is partly derived from
+	<https://bugs.gnu.org/43577#14>, which means it is:
+	(main): Call setup_ok_fold if ok_fold might be needed.
+	* src/searchutils.c (kwsinit): With the grep.c changes,
+	this code can now revert to classic 7th Edition Unix style;
+	aborting would be wrong.
+	* tests/turkish-eyes: Add tests for these bugs.
+
+2020-09-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+	* NEWS: Mention Bug#43577, which this fixes.
+
+	grep: fix recently-introduced performance glitch
+	* src/grep.c (main): Do not double-increment update_patterns.
+	update_patterns increments n_patterns now; do not increment it
+	again, as the incorrect count would hurt performance heuristics later.
+
+2020-09-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: improve --line-buffer doc
+	* doc/grep.texi (Other Options): Document --line-buffered more
+	carefully, and say what happens when it is not used.  Problem
+	reported by Dan Jacobson (Bug#35339).
+
+	tests: port timeout test to Alpine
+	Problem reported by Bruno Haible in:
+	https://lists.gnu.org/r/grep-devel/2020-09/msg00080.html
+	* tests/init.cfg (require_timeout_): Check that ‘timeout 0.01
+	sleep 0.02’ works as expected, to avoid spurious test failure
+	on Alpine.
+
+2020-09-22  Jim Meyering  <meyering@fb.com>
+
+	tests: test for many-regexp N^2 RSS regression
+	* tests/many-regex-performance: New test for this performance
+	regression.
+	* tests/Makefile.am: Add it.
+	* NEWS (Bug fixes): Describe it.
+
+2020-09-22  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: avoid unnecessary regex compilation
+	Grep resorts to using the regex engine when the precision of either
+	-o or --color is required, or when the pattern is not supported by
+	our DFA engine (e.g., backref). Otherwise, grep would perform regex
+	compilation solely to check the syntax. This change makes grep skip
+	that compilation in the common case for which it is unnecessary.
+
+	The compilation we are avoiding is quite costly, consuming O(N^2)
+	RSS for N regular expressions.
+
+	* src/dfasearch.c (GEAcompile): Add new argument, and avoid unneeded
+	compilation of regex.
+	* src/grep.c (compile_fp_t): Update prototype.
+	(main): Update caller.
+	* src/kwsearch.c (Fcompile): Update caller and add new argument.
+	* src/pcresearch.c (Pcompile): Add new argument.
+	* src/search.h (GEAcompile, Fcompile, Pcompile): Update prototype.
+
+2020-09-22  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest
+
+	tests: skip stack-overflow test on midnightbsd*
+	* tests/stack-overflow: skip_ when run on this OS. See details
+	in https://lists.gnu.org/r/grep-devel/2020-09/msg00062.html
+	* tests/Makefile.am (host_triplet): Export.
+
+2020-09-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: say how to match chars by code
+	From a suggestion in Bug#41004.
+	* doc/grep.texi (Character Encoding, Matching Non-ASCII):
+	New sections.  Move some material from Environment Variables
+	into these sections.
+
+2020-09-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/dfasearch.c (struct dfa_comp): Fix out-of-date comment.
+
+	grep: "grep '\)'" reports an error again
+	* src/grep.c (try_fgrep_pattern): With -G, pass \) through to
+	GEAcompile so that it can complain.  This fixes an unexpected
+	change in behavior from grep 3.4 and earlier.
+	* tests/filename-lineno.pl: Add tests for this sort of thing.
+
+	grep: tweak by using mempcpy
+	* src/grep.c (try_fgrep_pattern): Tweak previous change
+	by using mempcpy.
+
+2020-09-18  Jim Meyering  <meyering@fb.com>
+
+	grep: make echo .|grep '\.' match once again
+	The same applied for many other backslash-escaped bytes, not just
+	metacharacters.  The switch to rawmemchr in v3.4-almost-10-g9393b97
+	made some parts of the code require the usually-guaranteed newline
+	sentinel at the end of each pattern. Before, some consumers used a
+	(correct) pattern length and did not care that try_fgrep_pattern could
+	transform a pattern (with sentinel) like "\\.\n" to "..\n", thus
+	violating that assumption.
+	* src/grep.c (try_fgrep_pattern): Preserve the invariant
+	that each regexp is newline-terminated.
+	* tests/backslash-dot: New file. Test for this.
+	* tests/Makefile.am (TESTS): Add it.
+
+	tests: triple-backref: print a reference to glibc bug
+	* tests/triple-backref (MALLOC_CHECK_): And tell glibc not to
+	bother with a core dump.  Suggested by Pádraig Brady.
+
+2020-09-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: be more consistent about diagnostic format
+	* NEWS: Mention this.
+	* bootstrap.conf (gnulib_modules): Remove 'quote'.
+	* src/grep.c: Do not include quote.h.
+	(grep, grepdirent, grepdesc): Put the three unusual diagnostics
+	into the same "grep: FOO: message" form that grep uses elsewhere.
+	* tests/binary-file-matches, tests/in-eq-out-infloop:
+	Adjust tests to match new diagnostic format.
+
+2020-09-17  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest
+
+2020-09-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/triple-backref: Add comment.
+
+2020-09-17  Jim Meyering  <meyering@fb.com>
+
+	tests: make new test executable, to placate distcheck
+	* tests/binary-file-matches: Make this executable.
+
+	tests: add coverage for code that emits the new diagnostic
+	* tests/binary-file-matches: New file.
+	* tests/Makefile.am (TESTS): Add it.
+
+	maint: avoid syntax-check failure
+	* src/grep.c (grep): Lower-case the "B" in "Binary file... matches"
+	diagnostic that we now emit to stderr. This avoids the following
+	when running "make syntax-check":
+	  maint.mk: found capitalized error message
+	  make: *** [maint.mk:469: sc_error_message_uppercase] Error 1
+
+2020-09-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Send "Binary file FOO matches" to stderr
+	* NEWS, doc/grep.texi: Mention this change (Bug#29668).
+	* src/grep.c (grep): Send "Binary file FOO matches" to stderr
+	instead of stdout.
+	* tests/encoding-error, tests/invalid-multibyte-infloop:
+	* tests/null-byte, tests/pcre-count, tests/surrogate-pair:
+	* tests/symlink, tests/unibyte-binary:
+	Adjust tests to match new behavior.  In all cases this
+	simplifies the tests, which is a good sign.
+
+	Suppress "Binary file FOO matches" if -I
+	Problem reported by Jason Franklin (Bug#33552).
+	* NEWS: Mention this.
+	* src/grep.c (grep): Do not output "Binary file FOO matches" if -I.
+	* tests/encoding-error: Add test for this bug.
+
+2020-09-15  Jim Meyering  <meyering@fb.com>
+
+	maint: keep two blank lines before each old Noteworthy line.
+	* NEWS: Insert a blank line.
+
+2020-09-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2020-09-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2020-09-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2020-09-11  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest
+
+2020-09-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix logic for growing PCRE JIT stack
+	* src/pcresearch.c (jit_exec) [PCRE_EXTRA_MATCH_LIMIT_RECURSION]:
+	When growing the match_limit_recursion limit, do not use the old
+	value if ! (flags & PCRE_EXTRA_MATCH_LIMIT_RECURSION), as it is
+	uninitialized in that case.
+
+	grep: fix PCRE JIT test when JIT not available
+	Problem reported by Thomas Deutschmann (Bug#29446#23).
+	* src/pcresearch.c (Pexecute): Diagnose PCRE_ERROR_RECURSIONLIMIT.
+	* tests/pcre-jitstack: Treat recursion limit overflow like stack
+	overflow.
+
+	grep: fix -w bug in UTF-8 locales
+	Problem reported by Mayo Fark (Bug#43225).
+	* src/searchutils.c (wordchar_prev): In a UTF-8 locale, do not
+	assume that an encoding-error byte cannot be part of a word
+	constituent, as this assumption is incorrect for the last byte
+	of a multibyte word constituent.
+	* tests/word-delim-multibyte: Add a test for the bug.
+
+	Distribute a gzip tarball again
+	Requested by Issam E. Maghni in:
+	https://lists.gnu.org/r/grep-devel/2020-09/msg00000.html
+	* configure.ac (AM_INIT_AUTOMAKE): Remove no-dist-gzip.
+
+	* README-prereq: Also mention xz.
+
+2020-09-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Prefer rawmemchr to memchr when it’s easy
+	* bootstrap.conf (gnulib_modules): Add rawmemchr.
+	* src/dfasearch.c (GEAcompile, EGexecute):
+	* src/grep.c (update_patterns, prpending, prtext):
+	* src/kwsearch.c (Fcompile, Fexecute):
+	* src/pcresearch.c (Pcompile, Pexecute):
+	Simplify (and presumably speed up a little) by using rawmemchr
+	with a sentinel, instead of using memchr.
+
+	Simplify pattern_file_name
+	* src/grep.c (pattern_file_name): Make first argument
+	origin-0, not origin-1, as this simplifies both caller and
+	callee.  All uses changed.
+
+	Simplify regex_compile
+	* src/dfasearch.c (regex_compile): "" suffices; we don’t need "\0".
+	No need to initialize pat_lineno.
+
+	Omit duplicate regexps
+	Do not pass two copies of the same regexp to the
+	regular-expression engine.  Although the engines should
+	perform nearly as well even with the copies, in practice they do not.
+	Problem reported by Luca Borzacchiello (Bug#43040).
+	* bootstrap.conf (gnulib_modules): Add hash.
+	* src/grep.c: Include stdint.h, for SIZE_WIDTH.
+	Include hash.h.
+	(struct patloc, patloc, patlocs_allocated, patlocs_used):
+	Rename from struct FL_pair, fl_pair, n_fl_pair_slots, n_pattern_files,
+	respectively, since the data type is no longer a pair.
+	All uses changed.
+	(struct patloc): New member FILELINE.  The lineno member is now
+	ptrdiff_t since nowadays we prefer signed types.
+	(pattern_array, patterns_table): New static vars.
+	(count_nl_bytes, fl_add): Remove; no longer used.
+	(hash_pattern, compare_patterns, update_patterns): New functions.
+	update_patterns does what fl_add used to do, plus remove dups.
+	(pattern_file_name): Adjust to change from fl_pair to patloc.
+	(main): Move some variables to inner blocks for clarity.
+	Maintain the pattern_table hash of all patterns.
+	Update pattern_array to match keys, and use update_patterns
+	instead of fl_add to remove duplicate keys.
+	* tests/filename-lineno.pl (invalid-re-2-files)
+	(invalid-re-2-files2, invalid-re-2e): Ensure regexps are unique in
+	tests so that dups aren’t removed in diagnostics.
+	(invalid-re-line-numbers): New test.
+
+2020-08-23  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest
+	* gnulib: Update submodule to latest.
+	* bootstrap.conf (gnulib_modules): Add explicit dependency on dirname-lgpl.
+	Before, we pulled this in via a dependency.
+	* bootstrap: Update from gnulib.
+
+	build: require autoconf-2.64
+	* configure.ac: Require autoconf-2.64, up from 2.63, to align with gnulib.
+
+2020-08-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Revert -L exit status change introduced in grep 3.2
+	Problems reported by Antonio Diaz Diaz in:
+	https://bugs.gnu.org/28105#29
+	* NEWS, doc/grep.texi (Exit Status), src/grep.c (usage):
+	Adjust documentation accordingly.
+	* src/grep.c (grepdesc, main): Go back to old behavior.
+	* tests/skip-read: Adjust tests accordingly.
+
+2020-01-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: fix permission issue in previous change
+
+	tests: work around GCC -fprofile-generate bug
+	* tests/triple-backref: Add a 10 s timeout to work around
+	what appears to be a GCC bug with -fprofile-generate.
+	Problem reported by Martin Liška, with diagnosis by
+	Andreas Schwab (Bug#21513).
+
+2020-01-02  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 3.4
+	* NEWS: Record release date.
+
+	build: update gnulib to latest, for mbrtowc-vs-Irix build fix
+
+2020-01-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: mention glibc bug 24269
+	* doc/grep.texi (Known Bugs): Mention glibc bug 24269.
+	Merge formatting/URL changes from Gnulib regex.texi.
+
+	doc: fix --exclude description in man page
+	Problem reported by Duncan Moore (Bug#37212).
+	* src/grep.c (usage): Fix incorrect statement about --exclude
+	and directories.  Standardize on “that match GLOB� instead
+	of “matching GLOB�.
+
+	doc: fix missing “more� in man page
+	Problem reported by Philippe Schnoebelen (Bug#34078).
+	* doc/grep.in.1: Add missing “more�.
+
+2020-01-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: add [:blank:] to man page
+	* doc/grep.in.1: Mention [:blank:] (Bug#33291).
+
+2020-01-01  Jim Meyering  <meyering@fb.com>
+
+	maint: update all copyright year number ranges
+	Run "make update-copyright" and then...
+	* gnulib: Update to latest with copyright year adjusted.
+	* tests/init.sh: Sync with gnulib to pick up copyright year.
+	* bootstrap: Likewise.
+	* doc/grep.in.1: Use "-" in copyright year ranges, not \en.
+
+2019-12-31  Jim Meyering  <meyering@fb.com>
+
+	tests: avoid unwarranted failure in a netbsd 8.1 VM
+	* tests/mb-non-UTF8-perf-Fw: Run twice, to avoid first-read penalty.
+	Reported by Nelson H.F. Beebe.
+
+2019-12-30  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest (for localeinfo perf fix)
+
+	maint: add syntax-check rule to prohibit "backreference" spelling
+	* cfg.mk (sc_prohibit_backref): New rule.
+
+2019-12-30  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: remove too-long line from AUTHORS
+	* AUTHORS: Remove URL that’s too long.
+
+	maint: update AUTHORS
+	* AUTHORS: Update to better reflect current authorship.
+
+2019-12-30  Jim Meyering  <meyering@fb.com>
+
+	avoid new syntax-check failures
+	* cfg.mk (old_NEWS_hash): Updating old news, we must also udpate this.
+
+2019-12-30  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: don’t encourage back-references
+	* doc/grep.texi (Usage): Remove palindrome question.  Bondioni’s
+	RE makes grep issue a ‘grep: stack overflow’ diagnostic, and we
+	shouldn’t be encouraging fancy back-references anyway, due to all
+	the bugs in this area (Bug#26864).  Plus, the allusion to
+	“GNU extensions� doesn't seem to be correct here.
+
+	doc: robustify some examples
+	Prompted by suggestions by Stephane Chazelas (Bug#38792#20).
+	* doc/grep.texi (Usage): Make examples more robust.
+
+	doc: fix bug# typo
+
+	doc: spell "back-reference" more consistently
+
+	doc: mention back-reference bugs
+	Inspired by Bug#26864.
+	* doc/grep.texi (Known Bugs): New section.
+	Mention back-reference issues.
+
+2019-12-29  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: Add -- to more-complex example
+	Suggested by Stephane Chazelas (Bug#38792).
+	* doc/grep.in.1, doc/grep.texi: Add ‘--’ to recently-added example.
+
+	doc: improve subsection title (Bug#26132)
+	* doc/grep.in.1: Rename "Matcher Selection" to "Pattern Syntax".
+
+	doc: fix typo in previous patch
+
+	doc: document quoting better
+	Problem reported by Martin Simons (Bug#38792).
+	* doc/grep.texi: Fix quoting used in examples.  Say that patterns
+	should be quoted, use quoting more consistently in examples, and
+	give an example illustrating the difference between patterns and
+	globbing.  Don’t assume zgrep expertise in example.
+	* doc/grep.in.1: Likewise.  Also, reorder sections
+	to match GNU/Linux man-pages style.
+
+2019-12-26  Jim Meyering  <meyering@fb.com>
+
+	maint: tweak NEWS wording
+	* NEWS: Minor wording change.
+
+	build: update gnulib to latest; and sync tests/init.sh
+	* gnulib: update
+	* tests/init.sh: Sync from gnulib (this removes the LC_ALL=C setting).
+
+	tests: avoid spurious failure due to 1-second timeout
+	* tests/grep-dev-null-out: Use a 10-second timeout, rather than
+	a 1-second one.  This avoids false failure on slow systems.
+	Reported by Assaf Gordon in
+	https://lists.gnu.org/r/grep-devel/2019-12/msg00018.html
+
+2019-12-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+	maint: adjust surrogate-pair for 16-bit wchar_t
+	* tests/surrogate-pair: Adjust to match fixed behavior
+	on AIX 7.2, where wchar_t is 16 bits and cannot represent
+	the test case data.
+
+2019-12-25  Jim Meyering  <meyering@fb.com>
+
+	tests: fix typo in name of test file
+	* tests/backslash-s-vs-invalid-multitype: Rename to...
+	* tests/backslash-s-vs-invalid-multibyte: ...this.
+	* tests/Makefile.am (TESTS): Reflect renaming.
+
+	tests: ensure we use require_timeout_ when needed
+	* cfg.mk (sc_timeout_prereq): New syntax-check rule.
+
+	tests: require timeout
+	* tests/mb-non-UTF8-perf-Fw: This test uses "timeout",
+	so must first call require_timeout_.
+	This avoids test spurious failure when running with
+	no timeout program. Reported by Bruno Haible in
+	https://lists.gnu.org/r/grep-devel/2019-12/msg00008.html
+
+2019-12-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: work around AIX 7.2 sh printf bug
+	AIX 7.2 /bin/sh’s printf command mishandles octal escapes
+	in multibyte locales: it treats them as characters, not bytes.
+	* tests/backslash-s-vs-invalid-multitype, tests/encoding-error:
+	Use the C locale when employing the printf command with an octal
+	escape that AIX 7.2 sh might mishandle.
+	* tests/init.sh (setup_): Use the C locale for tests.
+	This has the side benefit of making them more reproducible.
+
+2019-12-22  Jim Meyering  <meyering@fb.com>
+
+	maint: adjust new comments
+	* src/dfasearch.c (possible_backrefs_in_pattern): Remove a
+	duplicate "a", insert a "be" and a comma, and reformat.
+
+	build: update gnulib to latest
+	* gnulib: Update submodule to latest.
+	* bootstrap: Copy from gnulib.
+	* tests/init.sh: Likewise.
+
+2019-12-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix some bugs in pattern-grouping speedup
+	This fixes some bugs in the previous commit,
+	and should finish the fix for Bug#33249.
+	* NEWS: Mention fix for Bug#33249.
+	* src/dfasearch.c (possible_backrefs_in_pattern, regex_compile)
+	(GEAcompile): In new code, prefer ptrdiff_t to size_t when either
+	will do, since ptrdiff_t has better error checking.  At some point
+	we should adjust the old code too.
+	(possible_backrefs_in_pattern): Rename from
+	find_backref_in_pattern.  New arg BS_SAFE.  All uses changed.
+	Fix false negative if a multibyte character ends in a single
+	'\\' byte, followed by the two bytes '\\', '1'.
+	(regex_compile): Simplify.
+	(GEAcompile): Avoid quadratic behavior when reallocating growing
+	buffers.  Fix a couple of bugs in copying pattern data involving
+	backreferences.  Fix another bug in copying pattern metadata
+	involving backreferences, by removing the need to copy it.
+
+2019-12-22  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: grouping of a pattern with multiple lines
+	When grep uses regex, it splits a pattern with multiple lines by
+	newline character into fragments.  Compilation and execution run for
+	each fragment.  That causes slowdown.  By this change, each fragment is
+	divided into groups by whether the fragment includes back references.
+	A fragment with back references constitutes group, and all fragments
+	that lack back references also constitute a group.
+
+	This change extremely speeds-up following case.
+
+	  $ seq -f '%040g' 0 9999 | sed '1s/$/\\(0\\)\\1/' >pat
+	  $ yes 00000000000000000000000000000000000000000x | head -10000 >in
+	  $ time -p env LC_ALL=C src/grep -f pat in
+
+	* src/dfasearch.c (find_backref_in_pattern, regex_compile):
+	New functions.
+	(GEAcompile): Use the new functions to group fragments
+	as mentioned above.
+
+2019-12-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: add NEWS for Bug#34951 fix
+	* NEWS: Mention Bug#34951.
+
+2019-12-19  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: separate parse and compile phase
+	DFAMUST() must be called after parse and before tokens re-order which is
+	introduced in commit 5c7a0371823876cca7a1347fa09ca26bbbff0c98, but both are
+	executed in compilation phase.
+
+	* lib/dfa.c (dfaparse): Change it to global function.
+	(dfacomp): If first argument is NULL, skip parse.
+	* lib/dfa.h: (dfaparse): Add a prototype.
+
+2019-12-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2019-12-19  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: speed up multiple word matching
+	grep uses its KWset matcher for multiple word matching, but that is
+	very slow when most of the parts matched to a pattern are not words.
+	So, if the first match to a pattern is not a word, use the grep matcher
+	to match for its line.
+
+	Note that when START_PTR is set, the grep matcher uses the regex matcher
+	which is very slow to match words.  Therefore, we use the grep matcher
+	when only START_PTR is NULL.
+
+	* src/kwsearch.c (Fexecute): If an initial match is incomplete because
+	not on a word boundary, use the grep matcher to find a matching line.
+
+2019-12-18  Jim Meyering  <meyering@fb.com>
+
+	maint: sort test names
+	* tests/Makefile.am (TESTS): Alphabetize the new addition,
+	mb-non-UTF8-perf-Fw to placate syntax-check's sc_sorted_tests.
+
+2019-12-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: adjust to recent Gnulib change
+	* po/POTFILES.in: Remove lib/xstrtol-error.c.
+
+2019-12-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: do not match invalid UTF-8
+	Update Gnulib to latest.  Also:
+	* src/dfasearch.c (EGexecute): Use ptrdiff_t, not size_t,
+	to match new Gnulib API.
+	* tests/Makefile.am (TESTS): Add dfa-invalid-utf8.
+	* tests/dfa-invalid-utf8: New file.
+
+2019-11-30  Jim Meyering  <meyering@fb.com>
+
+	tests: add test that would have detected -Fw perf regression
+	* tests/mb-non-UTF8-perf-Fw: New file. Detect v3.3-22-g090a4db's
+	performance regression.
+	* tests/Makefile.am (TESTS): Add it.
+
+2019-11-29  Jim Meyering  <meyering@fb.com>
+
+	maint: fix test comment
+	* tests/mb-non-UTF8-word-boundary: Also correct "introduced-in"
+	version number in a comment here.
+
+2019-11-25  Jim Meyering  <meyering@fb.com>
+
+	maint: correct NEWS blurb
+	* NEWS (Bug fixes): Correction: the -Fw bug was introduced
+	in 2.28, not in 3.0. Reported by Paul Eggert.
+
+2019-11-17  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: improve grep -Fw performance in non-UTF8 multibyte locales
+	* src/searchutils.c (mb_goback): New parameter.  All callers changed.
+	* src/search.h (mb_goback): Update prototype.
+	* src/kwsearch.c (Fexecute): Use mb_goback's MBCLEN to detect a
+	word-boundary even more efficiently.
+
+	grep: fix performance regression with previous patch
+	* src/kwsearch.c (Fexecute): Avoid unnecessary back-up in non-UTF8
+	multibyte locales.
+
+2019-11-16  Jim Meyering  <meyering@fb.com>
+
+	maint: rename a variable: bol -> nl
+	* src/kwsearch.c (Fexecute): Change misleading name: s/bol/nl/
+
+	build: update gnulib to latest
+
+	maint: correct and clarify a comment
+	* src/kwsearch.c (Fexecute): Logic was reversed.
+
+	grep: avoid false -Fw match in non-UTF8 multibyte locales
+	For example, this command would erroneously print its input line:
+	  echo ab | LC_CTYPE=ja_JP.eucjp grep -Fw b
+	This arose when the "memrchr" search for a preceding newline failed:
+	in that case, MB_START was not adjusted and was initially the same
+	as BEG, so wordchar_prev mistakenly returned 0.
+	* src/kwsearch.c (Fexecute): Set MB_START also when there is no
+	preceding newline.
+	* NEWS (Bug fixes): Mention it.
+	* tests/mb-non-UTF8-word-boundary: New file. Test for the bug.
+	* tests/Makefile.am (TESTS): Add it.
+	Reported by NIDE, Naoyuki in https://bugs.gnu.org/38223.
+
+2019-11-08  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib to latest
+	* po/POTFILES.in: Add lib/argmatch.h.
+
+2019-11-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: new --no-ignore-case option
+	Suggested by Karl Berry and mostly implemented by Arnold Robbins
+	(Bug#37907).
+	* NEWS:
+	* doc/grep.in.1:
+	* doc/grep.texi (Matching Control):
+	* src/grep.c (usage):
+	Document the new option.
+	* src/grep.c (NO_IGNORE_CASE_OPTION): New constant.
+	(long_options, main): Support new option.
+
+	grep: simplify previous patch
+	* src/grep.c (main): Use an int rather than an enum for a local
+	var, which is overkill here.
+
+	grep: further simplify out_file handling
+	* src/grep.c (print_filenames): Make this a local variable instead
+	of static.  Rename it to filename_option, to avoid confusion with
+	the print_filename function, and rename the enum values for the
+	same reason.  All uses changed.
+	(out_file): Now -1, 0, 1 to represent unknown, false, true.
+	All uses changed.
+	(single_command_line_arg): Remove.  This static variable’s
+	function is now accomplished by a local variable ‘num_operands’.
+	(grepdesc): Simplify adjustment of out_file accordingly.
+	(main): Initialize out_file to -1 if not known yet.
+
+2019-11-05  Zev Weiss  <zev@bewilderbeest.net>
+
+	grep: simplify out_file handling
+	* src/grep.c (print_filenames): New tristate enum (-H, -h, or
+	neither); supplants with_filenames and no_filenames.
+	(single_command_line_arg): New variable indicating if grep was run
+	with a single command-line argument.
+	(no_filenames): Remove variable.
+	(grepdirent): Don't twiddle out_file back and forth during recursion.
+	(grepdesc): Turn off out_file on 'grep -r foo nondirectory'.
+	(main): Replace with_filenames and no_filenames with print_filenames.
+	Enable out_file when both -r/-R and multiple arguments are given.
+
+2019-10-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix ‘grep -L ... >/dev/null’ bug
+	Problem reported by Adam Sampson (Bug#37716).
+	* NEWS: Mention this.
+	* src/grep.c (grepdesc): Don’t assume that stdout being /dev/null
+	means list_files == LISTFILES_NONE.
+	(main): Do not change list_files merely because stdout is /dev/null.
+	* tests/skip-read: Test for this bug.
+
+2019-10-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: tighten -i doc
+	* doc/grep.in.1:
+	* doc/grep.texi (Matching Control):
+	* src/grep.c (usage):
+	Make it clearer that -i affects patterns and data, but not
+	file names (Bug#37604).
+
+2019-03-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: fix “/src/grep: No such file or directory�
+	Problem reported by Jim Meyering in:
+	https://lists.gnu.org/r/grep-devel/2019-02/msg00000.html
+	* NEWS: Mention the change.
+	* configure.ac (fn_grep): Remove.  This old attempt to fix
+	<https://savannah.gnu.org/bugs/?31646> wasn’t working anyway,
+	since subprograms didn’t grok fn_grep.  People building on Solaris
+	will need a working grep, which is reasonably standard nowadays.
+	(GREP, EGREP): Do not override.  This way, we test the
+	newly-built grep only when running ‘make test’ and suchlike.
+	Instead, output a hopefully-helpful diagnostic if the
+	system 'grep' does not work.
+
+2019-02-18  Jim Meyering  <meyering@fb.com>
+
+	tests: avoid false positive upon stack overflow
+	* tests/pcre-jitstack: Don't let a stack overflow evoke a false
+	failure.  This test is to ensure there is no internal PCRE error.
+	Reported by Andreas Schwab in http://bugs.gnu.org/34370
+
+2019-02-16  Jim Meyering  <meyering@fb.com>
+
+	build: avoid build failure with --enable-gcc-warnings
+	* src/kwset.c (bmexec_trans): Define with _GL_ATTRIBUTE_PURE,
+	per suggestion from recent gcc snapshot.
+
+2019-02-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: clarify --exclude globbing
+	Problem reported by Paul Jackson.
+	* doc/grep.in.1:
+	* doc/grep.texi (File and Directory Selection):
+	Clarify how --exclude globbing works.
+
+	grep: parse --color arg independent of locale
+	This is a better fix for Bug#34285.
+	* bootstrap.conf (gnulib_modules): Add c-strcase.
+	* src/grep.c: Include c-strcase.h, not strings.h.
+	(main): Use c_strcasecmp, not strcasecmp.
+
+2019-02-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix grep.c includes
+	* src/grep.c: Include strings.h; problem reported by David
+	Monniaux (Bug#34285).  Do not include fcntl.h, as system.h does
+	that for us.h
+
+	build: update gnulib submodule to latest
+
+2019-01-20  Jim Meyering  <meyering@fb.com>
+
+	build: ensure no VLA is used
+	Cause developer builds to fail for any use of a VLA.
+	VLAs (variable length arrays) limit portability.
+	* configure.ac (nw): Remove -Wvla from the list of disabled warnings,
+	thus enabling the warning when configured with --enable-gcc-warnings.
+	(GNULIB_NO_VLA) Define, disabling use of VLAs in gnulib.  This commit
+	is functionally equivalent to coreutils' v8.30-44-gd26dece5d.
+
+	build: update gnulib to latest
+
+2019-01-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: --binary-files update in man page
+	* doc/grep.in.1: Adjust --binary-files description to match that
+	in doc/grep.texi.  When I updated the documentation in
+	2016-09-09T01:33:14!eggert@cs.ucla.edu I forgot to update the man
+	page accordingly (Bug#33898).
+
+	grep: simplify pcresearch.c ifdefs
+	This fixes a warning if PCRE is not used (Bug#34054).
+	* configure.ac (USE_PCRE): New conditional.
+	* src/Makefile.am (grep_SOURCES) [!USE_PCRE]: Omit pcresearch.c.
+	* src/grep.c (matchers) [!HAVE_LIBPCRE]: Omit perl matcher.
+	(setmatcher) [!HAVE_LIBPCRE]: If helpful, mention
+	--disable-perl-regexp in diagnostic.
+	* src/pcresearch.c: Simplify by assuming HAVE_LIBPCRE.
+
+2019-01-01  Jim Meyering  <meyering@fb.com>
+
+	maint: update all copyright dates via "make update-copyright"
+	* gnulib: Also update submodule for its copyright updates.
+
+2018-12-20  Jim Meyering  <meyering@fb.com>
+
+	doc: fix the bug-introduced version in 3.3's announcement
+	* NEWS: Correct bug-introduced version (s/2.3/3.2/).
+	* cfg.mk (old_NEWS_hash): Updating old news, we must also udpate this.
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 3.3
+	* NEWS: Record release date.
+
+	grep: fix \b DFA-bug in C locale
+	Under some conditions, \b would mistakenly fail to match, e.g.
+	  echo 123-x|LC_ALL=C grep '.\bx'
+	* NEWS (Bug fixes): Mention it
+	* gnulib: Update to latest, for DFA regression fix.
+	* tests/word-delim-multibyte: Add a test for the dfa.c regression.
+
+2018-12-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fit --version authorship into 80
+	* src/grep.c (AUTHORS): Remove.
+	(main): Output the authorship info ourselves instead of having
+	version_etc do it.  This is better for i18n anyway.
+
+	build: update gnulib submodule to latest
+
+2018-12-20  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 3.2
+	* NEWS: Record release date.
+
+2018-12-18  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib for c-stack fix
+
+2018-12-17  Bruno Haible  <bruno@clisp.org>
+
+	tests: stack-overflow: avoid unwarranted test failure on some hosts
+	* tests/stack-overflow: Use ulimit to limit stack size. Otherwise,
+	at least on gcc113, grep would fail to overflow its stack, so this
+	test would fail to find the required diagnostic and would fail.
+
+2018-12-16  Jim Meyering  <meyering@fb.com>
+
+	tests: reenable the surrogate-pair test
+	This reverts commit bdb98cec2e7bf255e1d00eaf8be16299f7bf571e,
+	but adding the comment changes suggested by Bruno Haible in
+	https://lists.gnu.org/r/grep-devel/2018-12/msg00037.html
+	* tests/surrogate-pair: New file.
+	* tests/Makefile.am (TESTS): List it.
+
+2018-12-16  Bruno Haible  <bruno@clisp.org>
+
+	tests: stackoverflow: fix test failure on HardenedBSD 11
+	* tests/stack-overflow: Try up to 10 million opening parentheses.
+
+2018-12-16  Jim Meyering  <meyering@fb.com>
+
+	tests: remove stale surrogate-pair test
+	The cygwin-specific code for surrogate pairs was first disconnected
+	via v2.21-62-g936c904 and later removed as part of a then-unused
+	function via v2.24-12-g704de87. So now I'm removing the test, too.
+	If someone thinks it important and would like to revive it, please do.
+	* tests/surrogate-pair: Remove file.
+	* tests/Makefile.am (TESTS): Remove it.
+
+2018-12-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2018-12-15  Jim Meyering  <meyering@fb.com>
+
+	tests: stack-overflow: handle the case of success without the diagnostic
+	* tests/stack-overflow: Do not always require a stack
+	overflow diagnostic.
+
+	build: update gnulib to latest
+	* gnulib: Update to latest, to pull in code that now compensates for
+	a bug in glibc-2.27 and prior.
+
+	build: make the autoconf-2.63 requirement explicit
+	* configure.ac: AC_PREREQ: Require 2.63, not 2.59. And quote properly.
+	Autoconf-2.63 has been required for some time via gnulib.
+	This merely makes it explicit.
+
+2018-12-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: fix diagnostic typo
+	Fix by Bruno Haible in:
+	https://lists.gnu.org/r/grep-devel/2018-12/msg00003.html
+	* tests/init.cfg (envvar_check_fail): Fix diagnostic.
+
+2018-11-24  Jim Meyering  <meyering@fb.com>
+
+	tests: stack-overflow: avoid false failure
+	* tests/stack-overflow: This test would fail to elicit a stack overflow
+	diagnostic on some OS X systems. Rewrite to iterate, gradually increasing
+	the size of the input regex, stopping when grep emits the desired diagnostic
+	or the size reaches a reasonable limit.
+
+2018-10-16  Jim Meyering  <meyering@fb.com>
+
+	tests: reduce the sole failing test
+	* tests/backref-alt: Significantly reduce abort-inducing input.
+
+	build: update gnulib to latest; also update bootstrap and init.sh
+
+2018-10-13  Jim Meyering  <meyering@fb.com>
+
+	doc: NEWS: mention performance improvements
+	* NEWS (Improvements): Mention them.
+
+2018-10-13  Jim Meyering  <meyering@fb.com>
+
+	grep: triple initial buffer size: 32k->96k
+	Changing 32k to 96k gives a 3-23% performance improvement.
+	All timings ran with this diff on top of commit v3.1-39-g7179b21:
+
+	for n in 32 64 96 128; do
+	  echo n=$n
+	  perl -pi -e 's/(INITIAL_BUFSIZE =) \d+/$1 '$n/ src/grep.c &&
+	    make AM_CFLAGS=-O3 WERROR_CFLAGS= >& makerr-$n &&
+	    for needle in 1f2 1f298lkjskjhahjklkj34; do
+	      echo "  needle=$needle"
+	      for i in $(seq 10); do
+	         env MALLOC_PERTURB_= time -qf%e src/grep $needle w2000
+	      done 2>&1 |sort -g | tee >(head -1|sed 's/^/    /') > .time-${n}KB-$needle
+	    done
+	done
+
+	Tested searchs: search for a short literal pattern that is not
+	present in 9.3GB file containing 2000 copies of /usr/dict/words
+	created via this:
+	  ln -s /usr/share/dict/words k && cat $(yes k|head -2000) > w2000
+	I ran this command:
+	  env MALLOC_PERTURB_= time src/grep 1f2 w2000
+	old(32k) vs new elapsed time, best of 10 trials (gcc-9.0.0 20180831, -O3):
+	 32k  64k  96k(%incr) 128k CPU
+	1.25 1.18 1.16( 7.2) 1.20 i7-4770S@3.10GHz cache=8MB
+	1.21 1.16 1.17( 3.3) 1.19 Xeon(R) E3-1505M v5 @ 2.80GHz cache=8MB
+	2.36 2.29 2.29( 3.0) 2.36 Xeon(R) E5-2680 v4 @ 2.40GHz cache=32MB
+	1.40 1.32 1.31( 6.4) 1.33 i5-6260U @ 1.80GHz cache=4MB
+	1.31 1.26 1.24( 5.3) 1.23 AMD FX(tm)-4100 cache=2MB (with only 1000 copies)
+
+	Searching for a longer string: 1f298lkjskjhahjklkj34
+	2.03 1.76 1.61(20.7) 1.53 i7-4770S@3.10GHz cache=8MB
+	1.95 1.70 1.56(20.0) 1.51 Xeon(R) E3-1505M v5 @ 2.80GHz
+	3.27 2.98 2.84(13.1) 3.02 Xeon(R) E5-2680 v4 @ 2.40GHz
+	2.48 2.12 1.91(23.0) 1.80 i5-6260U @ 1.80GHz cache=4MB
+	1.72 1.54 1.46(15.1) 1.41 AMD FX(tm)-4100 cache=2MB
+
+	* src/grep.c (INITIAL_BUFSIZE): Triple it: 32kB -> 96kB
+
+2018-09-28  Barret Rhoden  <brho@cs.berkeley.edu>  (tiny change)
+
+	maint: fix cross-compiling problem
+	* cfg.mk (PATH): Omit if cross-compiling (Bug#32866).
+
+2018-09-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+	grep: fix usage 80-column glitch
+	* src/grep.c (usage): Do not go over 80 columns in the source
+	code, to pacify "make dist".
+
+2018-09-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: update bootstrap
+	* bootstrap: Copy from Gnulib.
+
+	maint: fix build failure
+	Problem found by OpenCSW buildbot; the bug also occurs on GNU/Linux
+	build platforms.  The symptom is “system.h:26:24: fatal error:
+	configmake.h: No such file or directory�.  See:
+	https://buildfarm.opencsw.org/buildbot/builders/ggrep-solaris10-sparc/builds/107
+	* bootstrap.conf: Add configmake, a dependency that was formerly brought
+	in only by accident.
+
+2018-09-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2018-08-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: fix comment
+
+	tests: backref-alt works with glibc 2.28
+	Problem reported by Jaroslav Skarvada (Bug#32409).
+	* tests/Makefile.am (XFAIL_TESTS) [!USE_INCLUDED_REGEX]:
+	Don’t add backref-alt, since this bug is fixed in glibc 2.28.
+
+2018-05-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: “pattern� vs “patterns�
+	* doc/grep.in.1, doc/grep.texi, src/grep.c (usage): Be more
+	careful about saying that an argument or option specifies one or
+	more patterns, not just a single pattern.  Problem reported by Kaz
+	Kylheku (Bug#31400).
+
+	build: update gnulib submodule to latest
+
+2018-04-21  Jim Meyering  <meyering@fb.com>
+
+	maint: fix new syntax-check (sc_long_lines) failure
+	* HACKING: Shorten line by one byte to fit in 80 columns.
+
+	build: update gnulib to latest
+
+2018-04-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: fix font typo
+
+	maint: update URLs
+	Mostly this is just changing http: to https:.
+	In one or two places it removes no-longer-useful URLs.
+
+	doc: man-page format fixes
+	* doc/grep.in.1: Fix minor formatting glitches, e.g., extra
+	space after [...] because groff thought it was a sentence end.
+	Problem reported by Ingo Schwarze (Bug#31228#11).
+
+2018-04-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: mention encoding errors
+	This attempts to document the encoding-error problem more
+	precisely (Bug#30326).
+	* doc/grep.in.1, doc/grep.texi: Mention that the behavior of
+	patterns like ‘.’ is not specified on encoding errors.
+
+	doc: port better to mandoc
+	* doc/grep.in.1: Check for groff and its macro packages
+	independently, as groff can be used with non-groff macro packages.
+	Use an-ext style macros rather than www.tmac style, as this should
+	be more portable to mandoc.  Problem reported by Laura Morales and
+	Ingo Schwarze (Bug#31228).
+
+2018-02-16  Jim Meyering  <meyering@fb.com>
+
+	maint: avoid new syntax-check failure
+	* cfg.mk (old_NEWS_hash): Update, to accommodate v3.1-20-g63d4174's
+	typo fix.
+
+	doc: clarify that PCRE support is here to stay
+	* doc/grep.texi (grep Programs): Clarify: it's not PCRE support
+	that is experimental, but its combination with --null-data (-z).
+
+2018-02-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: fix typo
+
+2018-01-06  Jim Meyering  <meyering@fb.com>
+
+	maint: update gnulib and copyright dates for 2018
+	* gnulib: Update to latest.
+	* all files: Run "make update-copyright".
+	* bootstrap: Update from gnulib.
+
+2017-12-17  Jim Meyering  <meyering@fb.com>
+
+	build: link with -lsigsegv, when c-stack module requires it
+	* src/Makefile.am (grep_LDADD): Add $(LIBCSTACK).
+	Otherwise, on at least Debian and Arch-based systems, linking would
+	fail with diagnostics like these:
+	  c-stack.c:207: undefined reference to `stackoverflow_install_handler'
+	  c-stack.c:216: undefined reference to `sigsegv_install_handler'
+	Reported by Jeremy Feusi.
+
+	build: suppress sig-handler.h's -Wcast-function-type warning
+	* configure.ac (WERROR_CFLAGS): Add -Wno-cast-function-type
+	to suppress warning about sig-handler.h's sa_handler_t cast:
+	sig-handler.h: In function 'get_handler':
+	sig-handler.h:47:12: error: cast between incompatible function\
+	  types from 'void (* const)(int,  siginfo_t *, void *)'\
+	  {aka 'void (* const)(int,  struct <anonymous> *, void *)'}\
+	  to 'void (*)(int)' [-Werror=cast-function-type]
+	     return (sa_handler_t) a->sa_sigaction;
+
+2017-12-16  Jim Meyering  <meyering@fb.com>
+
+	grep: diagnose stack overflow rather than segfaulting
+	* bootstrap.conf (gnulib_modules): Add c-stack.
+	* src/grep.c: Include "c-stack.h".
+	(main): Call c_stack_action (NULL);
+	* tests/stack-overflow: New file.
+	* tests/Makefile.am (TESTS): Add name of new file.
+	* NEWS (Improvements): Mention it.
+	Interestingly, this bug does not afflict grep-2.5.4 or prior,
+	so it appeared to have been introduced with grep-2.6.  However,
+	the origin is in glibc's regexp compiler, and I tracked it to
+	stack-aware parsing that was removed from glibc's regexp in 2002.
+	However, grep-2.5.4 was released in 2009.  That version worked
+	(and still works, now) because it included and (by default) used
+	an old copy of glibc's regexp code.
+	Jeremy Feusi reported the grep segfault in https://bugs.gnu.org/29666.
+	I reported the glibc regexp bug in
+	https://sourceware.org/bugzilla/show_bug.cgi?id=22620
+
+2017-11-26  Stephan T. Lavavej  <stl@nuwen.net>
+
+	grep: fix directory recursion on MS-Windows
+	gnulib recently gained a module, windows-stat-inodes, that fixes
+	directory recursion on MS-Windows. No changes to grep's C sources are
+	required; grep simply needs to request the module during configuration.
+
+	When grep requests this module, its configure script will gain the
+	behavior that was implemented in windows-stat-inodes.m4. This detects
+	mingw and sets WINDOWS_STAT_INODES=1. All other platforms are
+	unaffected, setting WINDOWS_STAT_INODES=0 (which is what's happening
+	in the absence of this patch).
+
+	* bootstrap.conf (gnulib_modules): Add windows-stat-inodes.
+	* NEWS (Bug fixes): Mention it.
+	Thanks to Pär Björklund who diagnosed the problem as involving inodes,
+	and thanks to Václav Haisman who provided the bootstrap.conf patch.
+
+2017-11-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: port better to Adélie GNU/Linux 64-bit ppc
+	Problem reported by A. Wilcox (Bug#29446).
+	* src/pcresearch.c (PCRE_EXTRA_MATCH_LIMIT_RECURSION)
+	(PCRE_STUDY_EXTRA_NEEDED): Default to 0.
+	(jit_exec): If we run up against the recursion limit,
+	double it (if possible) and try again.
+	(Pcompile): Also specify PCRE_STUDY_EXTRA_NEEDED so that
+	pc->extra is not null.
+
+2017-11-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: omit a dup 'const'
+	* src/grep.c (matchers): Omit duplicate 'const'.
+
+2017-10-13  Bernhard Voelker  <mail@bernhard-voelker.de>
+
+	doc: document the option delimiter '--'
+	* doc/grep.texi (Other options): Do the above.
+	Reported in https://lists.opensuse.org/opensuse/2017-03/msg00411.html
+	This addresses http://bugs.gnu.org/26139
+
+2017-08-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+	Pacify GCC 5.4
+	* src/grep.c (grepdesc): Rework to pacify GCC 5.4 warning
+	about logical not.
+
+2017-08-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2017-08-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: -L exits with status 0 if a file is selected
+	Problem reported by Anthony Sottile (Bug#28105).
+	* NEWS, doc/grep.texi (Exit Status), src/grep.c (usage): Document this.
+	* src/grep.c (grepdesc): Implement it.
+	* tests/skip-read: Test it.
+
+	build: update gnulib submodule to latest
+
+2017-08-13  Jim Meyering  <meyering@fb.com>
+
+	maint: avoid newly-introduced syntax-check failure
+	* src/grep.c (usage): Shorten --help line to 80, so
+	"make syntax-check" passes once again.
+
+2017-08-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: improve -o help
+	* src/grep.c (usage): Document that -o outputs only nonempty
+	matches (Bug#27931).
+
+2017-07-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: add Bug#27838 test case
+	* tests/backref-alt: New test case from a fuzzer.
+
+2017-07-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: distinguish -w from \<...\>
+	* doc/grep.texi (Matching Control):
+	Give example of why -w differs from \<...\> (Bug#27813).
+
+2017-07-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: define Dt string in man page
+	Problem reported by Bjarni I. Gislason via Santiago R.R. (Bug#27651).
+	* doc/grep.in.1 (dT): New macro.
+	(Dt): Define this string.
+
+2017-07-02  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 3.1
+	* NEWS: Record release date.
+
+2017-07-01  Jim Meyering  <meyering@fb.com>
+
+	tests: avoid false failures when run in qemu user mode
+	* tests/filename-lineno.pl: Derive the program name that grep
+	will use in diagnostics, based on a suggestion from Assaf Gordon.
+	* tests/in-eq-out-infloop: Similar: accept an arbitrary "command_name: "
+	prefix on checked diagnostics, rather than requiring "grep: ".
+	* tests/reversed-range-endpoints: Likewise.
+	* tests/write-error-msg: Likewise.
+	Reported by Bruno Haible in http://bugs.gnu.org/27532
+
+2017-06-25  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+	* gnulib: Update to latest for these portability fixes:
+	- stat: port to xlc 12.01
+	- xalloc-oversized: port to icc
+
+	doc: fix another typo
+	* doc/grep.texi (File and Directory Selection): Fix typo: s/afer/after/
+
+2017-06-24  Jim Meyering  <meyering@fb.com>
+
+	doc: stop calling --perl-regexp (-P) "highly" experimental
+	Use wording that is less likely to make readers think that
+	support for -P may be removed.
+	* doc/grep.in.1: s/highly experimental/experimental/
+	* doc/grep.texi: Likewise.
+	Suggested by Evan Sheahan.
+
+2017-06-21  Jim Meyering  <meyering@fb.com>
+
+	doc: correct typo
+	* doc/grep.texi (Performance): s/suprisingly/surprisingly/
+
+	gnulib: update to latest
+
+2017-06-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: -m no longer cuts off trailing context
+	Problem reported by Markus Jochim (Bug#26254).
+	* NEWS, doc/grep.texi (General Output Control): Document this.
+	* src/grep.c (prpending): Selected lines no longer cut off context.
+	(usage): Say "selected" instead of "matching", where appropriate.
+	* tests/foad1, tests/max-count-vs-context, tests/yesno:
+	Adjust to match new behavior.
+
+2017-05-31  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Document grep performance
+	* doc/grep.texi (Performance): New section.
+
+	build: update gnulib submodule to latest
+
+2017-05-21  Jim Meyering  <meyering@fb.com>
+
+	maint: make the announcement template Cc the devel- list
+	* cfg.mk (announcement_Cc_): Define.
+
+	gnulib: update to latest; and update tests/init.sh
+
+	maint: accommodate GCC7's -Werror=duplicated-branches
+	* src/system.h (IGNORE_DUPLICATE_BRANCH_WARNING): Define.
+	* src/grep.c (grepfile): Use it.
+	* src/kwset.c (bmexec, acexec): Use it.
+
+	maint: update to work with GCC7's -Werror=implicit-fallthrough=
+	* src/system.h (FALLTHROUGH): Define.
+	* src/grep.c (context_length_arg): Use new FALLTHROUGH macro in place
+	of comments
+	(fgrep_to_grep_pattern, try_fgrep_pattern, main): Likewise.
+
+2017-05-13  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest and adapt src/kwset.c
+	* gnulib: Update to latest.
+	* src/kwset.c: Include "verify.h" for use of assume.
+
+2017-03-22  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest for dfa [0-9] performance improvement
+	This pulls in the following change that is very relevant to grep:
+
+	    commit 6afba02d7869d39ed7f61981045ddbdcb2814101
+	    Author: Paul Eggert <eggert@cs.ucla.edu>
+	    dfa: make [0-9] faster in non-C locales
+
+	* gnulib: Update to latest.
+	* NEWS (Improvements): Describe the effect on grep.
+
+2017-03-05  Jim Meyering  <meyering@fb.com>
+
+	build: use $(builddir), not $(srcdir)
+	* cfg.mk (PATH): Use $(builddir), so this also takes effect
+	in a non-srcdir build.  Also, switch ${PATH} syntax to $(PATH).
+
+2017-03-05  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	build: use $(PATH_SEPARATOR), not ":" to augment PATH
+	* cfg.mk (PATH): Use $(PATH_SEPARATOR), for those systems that
+	use something other than ":".
+	* THANKS.in: Remove name, to avoid syntax-check failure due to
+	the duplicate, now that there is this commit.
+
+2017-02-17  Jim Meyering  <meyering@fb.com>
+
+	maint: fix distcheck failure: remove stale dosbuf.c reference
+	* src/Makefile.am (EXTRA_DIST): Do not attempt to distribute
+	the recently deleted file, dosbuf.c.
+
+	maint: fix new syntax-check errors
+	* po/POTFILES.in: Add lib/xbinary-io.c.
+	* cfg.mk (FILTER_LONG_LINES): Add TODO to the list of exempt files.
+
+2017-02-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix up recent -U patches
+	Inspired by a suggestion by Eric Blake (Bug#25707#17).
+	* bootstrap.conf (gnulib_modules): Add xbinary-io,
+	and remove binary-io and xfreopen.
+	* doc/grep.texi (Other Options):
+	Fix typo and reword to be a bit more general.
+	* src/grep.c: Include xbinary-io.h instead of xfreopen.h.
+	(grepfile): Open with O_BINARY if binary.
+	(grepdesc): No need for set_binary_mode now.
+	(grep_command_line_arg, main): Set stdin to binary mode if binary.
+	(main): Avoid unnecessary test of stdin == NULL.
+	Use xsetmode instead of xfreopen.
+	* src/system.h: Do not include binary-io.h.
+
+	build: update gnulib submodule to latest
+
+	Simplify -U on MS-Windows by removing guesswork
+	Suggested by Eric Blake (Bug#25707#11).
+	* NEWS, doc/grep.texi: Document this.
+	* src/dosbuf.c: Remove.
+	* bootstrap.conf (gnulib_modules): Add xfreopen.
+	* src/grep.c: Include xfreopen.h, not dosbuf.c.
+	(fillbuf, print_line_head): Do not undossify input.
+	(binary): New static var.
+	(grepdesc): Apply BINARY to input file.
+	(usage): Remove -u help.
+	(main): Set BINARY if -U, and apply it to stdout.  Do nothing if -u.
+	With -f, apply BINARY to input file.
+
+2017-02-16  Eric Blake  <eblake@redhat.com>
+
+	grep: don't forcefully strip carriage returns
+	Commit 5c92a54 made the mistaken assumption that using fopen("rt")
+	on platforms where O_TEXT is non-zero makes sense.  However, POSIX
+	already requires fopen("r") to open a file in text mode, vs.
+	fopen("rb") when binary mode is wanted, and at least on Cygwin,
+	where it is possible to control whether a mount point is binary
+	or text by default (using just "r"), the use of fopen("rt") actively
+	breaks assumptions on a binary mount by silently corrupting any
+	carriage returns that are supposed to be preserved.
+
+	* src/grep.c (main): Never use fopen("rt") (Bug#25707).
+
+2017-02-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Update TODO and doc
+	* TODO: Bring up-to-date and fix formatting glitches.
+	* doc/grep.in.1, doc/grep.texi: Fix minor glitches.
+	The above patches should address the same problems that recent
+	Debian doc patches address, albeit in a different way.
+
+2017-02-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: clarify default input (Bug#25651)
+	* doc/grep.in.1:
+	* src/grep.c (usage): Clarify default input when -r.
+	* src/grep.c (usage): Do not bother documenting egrep and fgrep;
+	the manual is enough.
+
+2017-02-09  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 3.0
+	* NEWS: Record release date.
+
+2017-02-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: do not mishandle \. in multiple patterns
+	Problem reported by Lars Wendler (Bug#25655).
+	* NEWS: Document this.
+	* src/grep.c (try_fgrep_pattern): Fix typo that prevented
+	keys from being properly updated.
+	* tests/foad1: Test for the bug.
+
+2017-02-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Do not assume PCRE 8.20 or later
+	Problem reported by Zube (Bug#25647)
+	* NEWS: Document this.
+	* src/pcresearch.c (struct pcre.com.jit_stack):
+	Declare only if PCRE_STUDY_JIT_COMPILE.
+
+2017-02-06  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.28
+	* NEWS: Record release date.
+
+2017-02-02  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+
+2017-02-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: tune to avoid memchr2 sometimes
+	Problem noted by Norihiro Tanaka in:
+	http://lists.gnu.org/archive/html/grep-devel/2017-01/msg00027.html
+	Although not enough to restore all the previous performance in the
+	case he noted, it helps significantly.
+	* src/kwset.c (memchr_kwset): Bring back small_heuristic,
+	in a somewhat different form.
+
+2017-01-29  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+
+2017-01-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: simplify recent kwset change
+	* src/kwset.c (acexec_trans): Simplify.
+
+2017-01-23  Jim Meyering  <meyering@fb.com>
+
+	tests: really add the new test name
+	* tests/Makefile.am (TESTS): Add fgrep-longest.
+
+2017-01-21  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep -Fo could report a match that is not the longest
+	* src/kwset.c (acexec): Fix it.
+	* tests/fgrep-longest: New test.
+	* tests/Makefile.am: Add the test.
+	* NEWS: Mention it.
+
+2017-01-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: speed up Aho-Corasick when at most 2 bytes
+	When using Aho-Corasick and all matched strings either begin with
+	the same byte, or begin with one of at most two bytes, use memchr2
+	to search for these matching bytes and apply the Aho-Corasick
+	algorithm only when a memchr2 match is found.  On my platform,
+	this speeds up 'grep -F -e aa -e ba in' by a factor of 7, where
+	the file 'in' was created by 'seq -f %040.0f 10000000 >in'.
+	* src/kwset.c (struct kwset.gc1): Now int, not char.
+	If negative, there is no single terminal byte.  All uses changed.
+	(struct kwset.gc1help): Now int, not char.
+	If negative, memchr2 cannot be used.
+	(kwsprep): Set up gc1 and gc1help from kwset->next, with
+	the new (slightly changed) interpretation.
+	(memchr_kwset): Use memchr2 if possible.
+	Adjust to match new meaning of gc1, gc1help.
+	(memoff2_kwset): Remove; no longer needed.
+	(acexec_trans): Use memchr_kwset when possible, for speed.
+	It now supersedes memoff2_kwset.
+
+	grep: remove Commentz-Walter code
+	This code was not being used, and complicated maintenance.
+	We can bring it back from the repository if it turns out
+	to be useful later.
+	* src/kwset.c (struct kwset.reverse): Remove.  All uses of
+	FOO->reverse replaced by (FOO->kwsexec == bmexec).
+	(kwsalloc): Remove 'reverse' arg, as callers outside this
+	module do not care about algorithm choice.  All callers changed.
+	(kwsprep): When deciding whether to use Boyer-Moore, do not worry
+	about being called twice on the same kwset, as that is not allowed.
+	(cwexec): Remove; it was never called.  All uses removed.
+
+2017-01-17  Jim Meyering  <meyering@fb.com>
+
+	maint: avoid new syntax-check failures
+	* src/kwset.c (struct kwset): Split a line longer than 80.
+	* bootstrap: Update from gnulib. This fixes a new syntax-check
+	failure due to its use of "time stamp".
+
+2017-01-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Fix typo.
+
+	* src/kwset.c: Fix comment typo.
+
+	Improve -i performance in typical UTF-8 searches
+	Currently ‘grep -i i’ is slow in a UTF-8 locale, because ‘i’ in
+	the pattern matches the two-byte character 'ı' (U+0131, LATIN
+	SMALL LETTER DOTLESS I) in data, and kwset handles only
+	single-byte character translations, so grep falls back on a slower
+	DFA-based search for all searches.  Improve -i performance in the
+	typical case by using kwset when data are free of troublesome
+	characters like 'ı', falling back on the DFA only when data
+	contain troublesome characters.
+	* src/dfasearch.c (GEAcompile):
+	* src/grep.c (compile_fp_t):
+	* src/kwsearch.c (Fcompile):
+	* src/pcresearch.c (Pcompile):
+	Pattern arg is now char *, not char const *, since Fcompile
+	now reallocates it sometimes.
+	* src/grep.c (all_single_byte_after_folding): Remove.
+	All callers removed.
+	(fgrep_icase_charlen): New function.
+	(fgrep_icase_available, try_fgrep_pattern):
+	Use it, for more-generous semantics.
+	(fgrep_to_grep_pattern): Now extern.
+	(main): Do not free keys, since Fexecute may use them.
+	* src/kwsearch.c (struct kwsearch): New struct.
+	(Fcompile): Return it.  If -i, be more generous about patterns.
+	(Fexecute): Use it.  Fall back on DFA when the data contain
+	troublesome characters; this should be rare in practice.
+	* src/kwset.c, src/kwset.h (kwswords): New function.
+
+	build: update gnulib submodule to latest
+
+2017-01-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: prefer ptrdiff_t to size_t
+	The code already cannot handle objects with size greater than
+	SIZE_MAX / 2, so be more honest about it and use ptrdiff_t instead
+	of size_t.  ptrdiff_t arithmetic is signed, which allows for more
+	checking via -fsanitize=undefined.  It also makes the code a tad
+	smaller on x86-64, since it can test for < 0 rather than for ==
+	SIZE_MAX.
+	* src/dfasearch.c (struct dfa_comp.kwset_exact_matches):
+	(kwsmusts, EGexecute):
+	* src/kwsearch.c (Fcompile, Fexecute):
+	* src/kwset.c (struct kwset.kwsexec, kwsincr, memchr_kwset)
+	(memoff2_kwset, bmexec_trans, bmexec, cwexec, acexec_trans)
+	(acexec, kwsexec):
+	* src/kwset.h (struct kwsmatch.index, .offset, .size):
+	Prefer ptrdiff_t to size_t where either will do.
+
+2017-01-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: improve comments, mostly in kwset
+	Remove kwset.h comments that are obsolete and seemingly not
+	maintained anyway; people can look in kwset.c instead.
+	Update comments to reflect current behavior better.
+	Cite Faro & Lecroq 2013.  Use GNU style for end-of-sentence.
+
+2017-01-01  Jim Meyering  <meyering@fb.com>
+
+	maint: update gnulib and copyright dates for 2017
+	* gnulib: Update to latest.
+	* all files: Run "make update-copyright".
+
+2016-12-31  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: speed up -x with many patterns
+	* src/kwsearch.c (Fcompile): Improve buffer allocation overhead
+	with -x and multiple patterns.  In the common case where '\n' is
+	the end-of-line byte, avoid copying other than the first and last
+	patterns.
+
+2016-12-31  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest, fixing a parallel getopt test failure
+
+2016-12-29  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: space before paren
+
+	grep: int cleanup in kwset.c
+	This should affect only theoretical bugs with very large inputs.
+	On my platform, this patch shrinks the grep text by 136 bytes.
+	* src/kwset.c: Include intprops.h, for INT_MULTIPLY_WRAPV.
+	(struct trie, struct kwset, kwsalloc, kwsincr, treedelta, kwsprep)
+	(bm_delta2_search, bmexec_trans, cwexec): Prefer ptrdiff_t to int
+	when counts can exceed INT_MAX in large inputs, at least in theory.
+	(hasevery): Use bool for booleans.
+	(bmexec_trans): Avoid undefined behavior on integer overflow.
+
+2016-12-27  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: improve performance with multiple patterns
+	* src/grep.c (main): Avoid fgrep-to-grep conversion for word matching
+	with multiple patterns in single byte locales.
+
+2016-12-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Fix typo.
+
+	grep: fix bug with '... | grep pat >> /dev/null'
+	Problem reported by Benno Fünfstück (Bug#25283).
+	* NEWS: Document this.
+	* src/grep.c (drain_input) [SPLICE_F_MOVE]:
+	Don't assume /dev/null is always acceptable output to splice.
+	* tests/grep-dev-null-out: Test for the bug.
+
+2016-12-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: minor performance tweak for pure functions
+	* src/search.h (wordchars_size, wordchar_next, wordchar_prev):
+	Declare to be pure.
+
+2016-12-25  Zev Weiss  <zev@bewilderbeest.net>
+
+	grep: move localeinfo to grep.c
+	It's not really dfasearch-specific, and grep.c initializes it, so it
+	seems like the most appropriate "owner".
+
+	* src/dfasearch.c (localeinfo): Remove.
+	* src/grep.c (localeinfo): Add.
+	* src/search.h (localeinfo): Move to new commented section.
+
+2016-12-25  Zev Weiss  <zev@bewilderbeest.net>
+
+	pcresearch: thread safety
+	* src/pcresearch.c (pcre_comp): New struct to hold previously-global
+	state.
+	(jit_exec): Operate on a pcre_comp parameter instead of global state.
+	(Pcompile): Allocate and return a pcre_comp instead of setting global
+	variables.
+	(Pexecute): Operate on a pcre_comp parameter instead of global state.
+
+	kwsearch: thread safety
+	* src/kwsearch.c (Fcompile): Return a kwset_t instead of setting a
+	global variable.
+	(Fexecute): Use a passed-in kwset_t instead of a global variable.
+	(kwset): Remove global variable.
+
+	dfasearch: thread safety
+	* src/dfasearch.c (struct dfa_comp): New struct to hold
+	previously-global variables.
+	(dfawarn): Remove static variable.
+	(kwsmusts): Operate on a dfa_comp parameter instead of global
+	variables.
+	(GEAcompile): Allocate and return a dfa_comp struct instead of setting
+	global variables.
+	(EGexecute): Operate on a dfa_comp parameter instead of global
+	variables.
+	* src/searchutils.c (kwsinit): Replace a static array with a
+	dynamically-allocated one.
+
+2016-12-25  Zev Weiss  <zev@bewilderbeest.net>
+
+	grep: prepare search backends for thread-safety
+	To facilitate removing mutable global state from search backends,
+	compile() functions will return an opaque pointer to backend-specific
+	data, which must then be passed back into the corresponding execute()
+	function.  This is merely a preparatory step changing function
+	signatures and call sites, so the pointers passed & returned are
+	dummies for now and not (yet) actually used.
+
+	* src/grep.c (compile_fp_t): Now returns an opaque pointer (the
+	compiled pattern).
+	(execute_fp_t): Now passed the pointer returned by a compile_fp_t.
+	All call sites updated accordingly.
+	(compiled_pattern): New static variable.
+	* src/dfasearch.c (GEAcompile): Return a void pointer (dummy NULL).
+	(EGexecute): Receive a void pointer argument (unused).
+	* src/kwsearch.c (Fcompile): Return a void pointer (dummy NULL).
+	(Fexecute): Receive a void pointer argument (unused).
+	* src/pcresearch.c (Pcompile): Return a void pointer (dummy NULL).
+	(Pexecute): Receive a void pointer argument (unused).
+	* src/search.h: Update compile/execute function prototypes.
+
+2016-12-24  Jim Meyering  <meyering@fb.com>
+
+	maint: fix "syntax-check" failure
+	* src/grep.c (SEP_STR_GROUP): Declare "static".
+
+2016-12-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix comment in searchutils.c
+
+	grep: improve word checking with UTF-8
+	* src/searchutils.c: Do not include <verify.h>.
+	(word_start): Remove, replacing with ...
+	(sbwordchar): New static var.  All uses changed.
+	(wordchar_prev): Return size_t, not bool, as this generates
+	slightly better code.  Go back faster if UTF-8.
+
+	grep: standardize on localeinfo.multibyte
+	* src/dfasearch.c (EGexecute):
+	* src/grep.c (main):
+	* src/kwsearch.c (Fexecute):
+	* src/pcresearch.c (Pcompile):
+	Prefer localeinfo.multibyte to (MB_CUR_MAX > 1).
+
+	grep: speed up -wf in C locale
+	Problem reported by Norihiro Tanaka (Bug#22357#100).
+	This patch improves the performance on that benchmark on my
+	platform so that grep is now only about 2x slower than grep 2.26,
+	which means it is considerably faster than grep 2.25 and earlier.
+	* src/kwsearch.c (Fexecute):
+	Use wordchars_size to boost performance for this case.
+	* src/search.h, src/searchutils.c (wordchars_size): New function.
+
+	grep: specialize word-finding functions
+	This improves performance a bit.
+	* src/dfasearch.c, src/kwsearch.c (wordchar):
+	Remove; now in searchutils.c.
+	* src/grep.c (main): Call wordinit if -w.
+	* src/search.h: Adjust.
+	* src/searchutils.c: Include verify.h.
+	(word_start): New static var.
+	(wordchar): Move here from dfasearch.c and kwsearch.c.
+	(wordinit, wordchars_count, wordchar_next, wordchar_prev):
+	New functions.
+	(mb_prev_wc, mb_next_wc): Remove.
+	All callers changed to use the new functions instead.
+
+	grep: simplify Fexecute
+	* src/kwsearch.c (Fexecute): Avoid the need for a 'try' local or
+	for a 'goto success'.  Update mb_start to reflect newline found.
+
+	grep: remove C label
+	* src/kwsearch.c (Fexecute): Remove label.
+
+	maint: rewrite to avoid some macros
+	These days, the dangerous powers of C macros are not needed if
+	constants or functions will do just as well.
+	* src/grep.c (SEP_CHAR_SELECTED, SEP_CHAR_REJECTED, SEP_STR_GROUP)
+	(INITIAL_BUFSIZE):
+	* src/kwset.c (DEPTH_SIZE):
+	Now constants, not macros.
+	* src/kwset.c (link): Remove macro. Instead, rename local vars
+	from 'link' to 'cur'.
+	(malloc) [GREP]: Remove macro.  All uses of malloc changed to xmalloc.
+	Omit double-inclusion of xalloc.h.  Do not depend on 'GREP'.
+	(U): Now a function, not a macro.
+	* src/kwset.c, src/searchutils.c (NCHAR): Move this macro to ...
+	* src/system.h: ... here, and make it a constant.
+
+2016-12-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix performance with multiple patterns
+	Problem reported by Jaroslav Skarvada (Bug#22357).
+	* NEWS: Document this and other recent performance fixes.
+	* src/grep.c (E_MATCHER_INDEX): New constant.
+	(all_single_byte_after_folding):
+	New function, split out from fgrep_icase_available.
+	(fgrep_icase_available): Use it.
+	(try_fgrep_pattern): New function, which also uses it.
+	(main): With two or more patterns, use try_fgrep_pattern to fix
+	performance regression.  The number "two" here is just a heuristic.
+
+	grep: simplify matcher configuration
+	* src/grep.c (matcher, compile): Remove static vars.
+	(compile_fp_t): Now takes a 3rd syntax argument.
+	(Gcomppile, Ecompile, Acompile, GAcompile, PAcompile): Remove.
+	(struct matcher): Now nameless, since it is used only once.
+	Make 'name' a bit shorter.  New member 'syntax'.
+	(matchers): Initialize it, and change removed functions to GEAcompile.
+	(F_MATCHER_INDEX, G_MATCHER_INDEX): New constants.
+	(setmatcher): New arg MATCHER, and return new matcher index.
+	Avoid unnecessary call to strcmp.
+	(main): Keep matcher as a local int, not a global pointer.
+	* src/kwsearch.c (Fcompile):
+	* src/pcresearch.c (Pcompile): Ignore the 3rd syntax argument.
+
+	grep: simplify line counting in patterns
+	* src/grep.c (n_patterns): Rename from patfile_lineno,
+	as it is now origin-zero.  Now size_t, not uintmax_t.
+	(count_nl_bytes, fl_add): Simplify to just buffer and size.
+	All callers changed.
+
+2016-12-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2016-12-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+	build: update gnulib submodule to latest
+
+2016-12-13  Jim Meyering  <meyering@fb.com>
+
+	tests: use just-built grep in more places
+	* cfg.mk (PATH): Prepend $(srcdir)/src, so that we use the just-
+	built grep also when running commands like those of "make distcheck".
+	This would have avoided the recently-luckily-noticed infloop bug.
+	Tested by running this in a just-built directory:
+	f=src/grep; printf '%s\n' '#!/bin/sh' 'sleep 9h' > $f; chmod a+x $f
+	and then verifying that nearly every "make syntax-check" rule hangs.
+
+	maint: tell "syntax-check" not to worry about the NEWS update
+	Whenever we change "old" NEWS, we have to update this checksum.
+	Otherwise, a "make syntax-check" test that guards against a class
+	of logical merge conflicts will fail.
+	* cfg.mk (old_NEWS_hash): Update this hash to accommodate the
+	recent clarification of a 2.27 NEWS entry.
+
+2016-12-13  Arnold D. Robbins  <arnold@skeeve.com>
+
+	build: update gnulib submodule to latest
+	* src/dfasearch.c (GEAcompile): Remove use of flag, RE_ICASE covers it.
+
+2016-12-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: work around proc lseek glitch
+	Problem reported by Andreas Schwab (Bug#25180).
+	* NEWS: Document this.
+	* src/grep.c (finalize_input): Ignore EINVAL lseek failures.
+	* tests/Makefile.am (TESTS): Add proc.
+	* tests/proc: New file.
+
+2016-12-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: simplify finalize_input
+	* src/grep.c (finalize_input): Simplify without changing behavior.
+	It's still a bit of a rat's-nest, but it's a cozier rat's-nest.
+
+	maint: clarify early-exit news for 2.27
+	* NEWS: Mention early-exit options to avoid confusion.  See:
+	http://lists.gnu.org/archive/html/grep-devel/2016-12/msg00007.html
+
+2016-12-06  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.27
+	* NEWS: Record release date.
+
+2016-11-29  Jim Meyering  <meyering@fb.com>
+
+	grep: fix DFA-induced infloop
+	* gnulib: Update to latest, for the DFA infloop fix.
+	* tests/dfa-infloop: New test, to trigger an infinite loop
+	in the DFA matcher.
+	* tests/Makefile.am (TESTS): Add it.
+
+2016-11-28  Jim Meyering  <meyering@fb.com>
+
+	tests: use "returns_ N env VAR=val ..."
+	rather than "VAR=val returns_ N ..."
+	Some shells do not propagate envvar settings through our use
+	of the "returns_" function, so set any envvar via use of "env".
+	This was an issue at least on Ubuntu and Debian-based systems,
+	presumably due to their common use of "dash" as /bin/sh.
+	Reported by Assaf Gordon.
+	* tests/char-class-multibyte: As above.
+	* tests/euc-mb: Likewise.
+	* tests/false-match-mb-non-utf8: Likewise.
+	* tests/pcre-infloop: Likewise.
+	* tests/pcre-jitstack: Likewise.
+	* tests/sjis-mb: Likewise.
+	* tests/warn-char-classes: Likewise.
+
+2016-11-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: revert check for unibyte French range bug
+	The test wasn't portable, as it assumed that rational ranges
+	were not in effect.  Problem reported by Eric Blake (Bug#25048#8).
+	There doesn't seem to be a portable way to do the test, so omit it.
+	* tests/init.cfg, tests/unibyte-bracket-expr:
+	Revert previous change.
+
+	build: update gnulib submodule to latest
+
+2016-11-27  Jim Meyering  <meyering@fb.com>
+
+	grep: avoid false matches in non-UTF8 multibyte locales
+	* gnulib: Update to latest, for the dfa.c fix.
+	* NEWS (Bug fixes): Mention it.
+	* tests/false-match-mb-non-utf8: New file, with tests for this.
+	Based on tests from Stephane Chazelas.
+	* tests/Makefile.am (TESTS): Add it.
+	Introduced by commit v2.18-54-g3ef4c8e, a change that made grep use
+	its DFA matcher more aggressively.  The malfunction arises only with
+	the DFA matcher, not with regex.
+	Reported by Stephane Chazelas in https://bugs.gnu.org/24975
+
+2016-11-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: check for unibyte French range bug
+	Problem reported by Stephane Chazelas (Bug#24973).
+	This bug was fixed in Gnulib.
+	* NEWS: Document the fix.
+	* tests/init.cfg (require_ru_RU_koi8_r): Remove.
+	* tests/unibyte-bracket-expr: Add a test for the bug.
+	Call get-mb-cur-max directly instead of bothering with
+	require_ru_RU_koi8_r.
+
+	build: update gnulib submodule to latest
+
+2016-11-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: further -P performance fix
+	Problem reported by Stephane Chazelas in:
+	http://bugs.gnu.org/22655#103
+	* src/pcresearch.c (Pexecute): Set the subject to the start of
+	each line as it is found.
+
+	grep: -P no longer uses PCRE_MULTILINE
+	This reverts commit f6603c4e1e04dbb87a7232c4b44acc6afdf65fef,
+	as the extra performance is not worth the trouble for PCRE users.
+	Problem reported by Stephane Chazelas in:
+	http://bugs.gnu.org/22655#103
+	* NEWS: Document this and the next patch.
+	* src/dfasearch.c (EGexecute):
+	* src/grep.c (execute_fp_t):
+	* src/kwsearch.c (Fexecute):
+	* src/pcresearch.c (Pexecute):
+	First arg is now a const pointer again.
+	* src/grep.c (buf_has_encoding_errors): Now static.
+	* src/grep.h (buf_has_encoding_errors): Remove decl.
+	* src/search.h: Adjust decls.
+	* src/pcresearch.c (reflags): Remove.  All uses removed.
+	(Pcompile, Pexecute): Do not use PCRE_MULTILINE.
+
+2016-11-19  Jim Meyering  <meyering@fb.com>
+
+	doc: fix a doubled "the"
+	* doc/grep.texi (--perl-regexp): s/the\nthe/the/
+
+2016-11-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix -zxP bug
+	* NEWS: Document this.
+	* src/pcresearch.c (Pcompile): Search a line at a time if -x is
+	used, since -x uses ^ and $.
+	* tests/pcre: Test this.
+
+	grep: simplify by using PRIuMAX
+	* configure.ac (HAVE_PRINTF_C99_SIZES): Remove; no longer needed.
+	* src/grep.c (print_offset): Simplify (Bug#24451).
+
+	grep: -T now adjusts number widths for worst case
+	* NEWS, doc/grep.texi (Output Line Prefix Control):
+	Document this (Bug#24451).
+	* src/grep.c (offset_width): New static var.
+	(print_offset): Use it instead of arg.  All callers changed.
+	(grep): Set it.
+	* tests/initial-tab: Test this.
+
+	grep: -T no longer outputs BS
+	* NEWS: Document this (Bug#24451).
+	* src/grep.c (print_line_head): Do not attempt to backspace output.
+	* tests/initial-tab: New test.
+	* tests/Makefile.am (TESTS): Add it.
+
+	grep: document -oz better
+	* doc/grep.texi (General Output Control, Usage): Tweak (Bug#24961).
+
+	grep: fix performance typo with -P
+	Reported by Zev Weiss in: http://bugs.gnu.org/22655#88
+	* src/pcresearch.c (Pcompile): Initialize reflags.
+
+	tests: use "returns_" rather than "$?"
+	* tests/grep-dev-null-out: Use "returns_ 124" rather than testing
+	$? = 124.
+
+	grep -f /dev/null -L PAT FILE outputs FILE
+	* NEWS: Document this.
+	* src/grep.c (main): Do not exit right away with -L.
+	* tests/skip-read: Test for the fix.
+
+	grep: tune -f /dev/null
+	* src/grep.c (main): Do the -f /dev/null early-exit checks before
+	more-expensive tests that involve syscalls.
+
+	grep: treat -f /dev/null like -m0
+	* NEWS: Document this.
+	* src/grep.c (main): With -f /dev/null, don't bother to read the
+	input.  This is what FreeBSD grep does.
+	* tests/Makefile.am (TESTS): Add skip-read.
+	* tests/skip-read: New file.
+
+	grep: avoid O(N**2) buffer reallocation
+	* src/grep.c (main): Use x2realloc to avoid O(N**2) performance as
+	pattern buffers grow.
+
+	grep: avoid unnecessary gettext call
+	Translate "(standard input)" lazily.
+	* src/grep.c (input_filename): New function.
+	(suppressible_error): Remove 1st arg, since it is always
+	input_filename ().  All callers changed.
+	(suppressible_error, print_filename, grep, grepdesc): Use it.
+	(grep_command_line_arg): Set filename to NULL if standard
+	input has no label.  Often, this avoids all calls to gettext,
+	which can be a win as the first call can be expensive.
+
+	grep: drain the input pipe faster
+	* src/grep.c (dev_null_output): Now static.
+	(drain_input): New function, using 'splice' if that makes sense.
+	(finalize_input): Use it.
+	(main): Omit now-unnecessary initialization.
+
+	grep: scale back /dev/null speedup
+	The performance improvement when output is /dev/null (commit
+	af6af288eac28951b5eee1eaaf373e22b2193b7b dated 2016-05-01)
+	breaks scripts that run "PROGRAM | grep PATTERN >/dev/null"
+	where PROGRAM dies when writing into a broken pipe.
+	Suppress the improvement if standard input is not seekable.
+	Problem reported by Gary Johnson (Bug#24941).
+	* NEWS: Document this.
+	* src/grep.c (seek_failed): New static var.
+	(seek_data_failed): Move decl earlier, to be next to seek_failed.
+	(file_must_have_nulls): Skip useless syscalls if seek_failed.
+	Lessen source-code nesting.
+	(reset): Set seek_failed and seek_data_failed.
+	Try lseek even on non-regular files.
+	(grep): New arg INEOF.  All callers changed.
+	Do not clear seek_data_failed here, since 'reset' now does this.
+	(finalize_input): New static function.
+	(grepdesc): Use it.
+	(main): Do not exit on first match merely because output is
+	/dev/null.
+	* tests/grep-dev-null-out: Adjust to new behavior.
+
+	grep: improve diagnostic on lseek failure
+	* src/grep.c (reset): Mention the file name in the (unlikely)
+	chance of an lseek failure.
+
+	grep: avoid unnecessary isatty calls
+	This fixes an inefficiency that was mistakenly introduced a while
+	back, when the macro SET_BINARY became defined on all platforms.
+	* src/grep.c (grepdesc, main): Do not unecessarily call isatty on
+	POSIXish platforms.
+
+	grep: -Pz no longer rejects ^, $
+	Problem reported by Stephane Chazelas (Bug#22655).
+	* NEWS: Document this.
+	* doc/grep.texi (grep Programs): Warn about -Pz.
+	* src/pcresearch.c (reflags): New static var.
+	(multibyte_locale): Remove static var; now local to Pcompile.
+	(Pcompile): Check for (? and (* too.  Set reflags instead of
+	dying when problematic operators are found.
+	(Pexecute): Use reflags to decide whether searches should
+	be multiline.
+	* tests/pcre: Test new behavior.
+
+2016-11-14  Jim Meyering  <meyering@fb.com>
+
+	tests: use "returns_" rather than explicit comparison with "$?"
+	* tests/sjis-mb (encode): Rearrange to emit desired input into
+	a file, rather than piping directly into grep.  That permits
+	the use of returns_ 1 to verify timeout's exit status.
+	* tests/euc-mb: Use "returns_ 1" rather than testing $? = 1
+	* tests/char-class-multibyte: Likewise.
+	* tests/dfa-heap-overrun: Likewise.
+	* tests/encoding-error: Likewise.
+	* tests/fedora: Likewise.
+	* tests/grep-dev-null: Likewise.
+	* tests/init.cfg (envvar_check_fail): Likewise.
+	* tests/kwset-abuse: Likewise.
+	* tests/mb-non-UTF8-overrun: Likewise.
+	* tests/multibyte-white-space: Likewise.
+	* tests/pcre-infloop: Likewise.
+	* tests/surrogate-pair: Likewise.
+	* tests/warn-char-classes: Likewise.
+	Do the same for other values:
+	* tests/backref-multibyte-slow: Likewise.
+	* tests/euc-mb: Likewise.
+	* tests/pcre-abort: Likewise.
+	* tests/pcre-jitstack: Likewise.
+	* tests/repetition-overflow: Likewise.
+	* tests/reversed-range-endpoints: Likewise.
+	* tests/warn-char-classes: Likewise.
+
+2016-10-26  Jim Meyering  <meyering@fb.com>
+
+	doc: grep builds on HP-UX once again
+	* NEWS (Bug fixes): Mention the HP-UX fix.
+
+	gnulib: update to latest, for getprogname HPUX port
+
+2016-10-22  Mark Veltzer  <mark.veltzer@gmail.com>
+
+	ignore coverage generated files
+
+	ignore ar-lib in build-aux
+
+2016-10-20  Zev Weiss  <zev@bewilderbeest.net>
+
+	grep: use 'j' intmax_t printf length modifier if supported
+	* configure.ac: Use gl_PRINTF_SIZES_C99 to test printf and
+	(conditionally) define HAVE_PRINTF_C99_SIZES.
+	* src/grep.c (print_offset): Use printf("%j...") for printing
+	[u]intmax_t if HAVE_PRINTF_C99_SIZES is defined; otherwise continue
+	using the existing hand-rolled loop.
+
+2016-10-15  Jim Meyering  <meyering@fb.com>
+
+	build: distribute new file, die.h, so "make distcheck" passes
+	* src/Makefile.am (grep_SOURCES): Add die.h.
+	Also, sort these file names.
+
+2016-10-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2016-10-09  Jim Meyering  <meyering@fb.com>
+
+	maint: die.h: add the "#define ..." part of double inclusion guard
+	* src/die.h (DIE_H): Define to 1.
+
+2016-10-04  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: don't assume stdbool.h before die call
+	* src/die.h: Include stdbool.h, since 'die' uses 'false'
+
+	grep: die more systematically
+	* src/die.h: New file.
+	* src/dfasearch.c, src/grep.c, src/pcresearch.c: Include die.h.
+	* src/dfasearch.c (dfaerror):
+	* src/grep.c (context_length_arg, add_count, prline, setmatcher, main):
+	* src/pcresearch.c (jit_exec, Pcompile, Pexecute):
+	Use 'die' instead of 'error' when exiting.
+	* src/pcresearch.c: Do not include verify.h.
+	(die): Remove; now in die.h.
+	* src/search.h: Do not include error.h here, since this file does
+	not use anything defined in error.h.  Instead, dfasearch.c, which
+	uses error.h's symbols, now includes error.h directly.
+
+2016-10-02  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.26
+	* NEWS: Record release date.
+
+2016-10-01  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest; for getprogname fix
+
+2016-10-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests/grep-dir: port to Solaris 10
+	* tests/grep-dir: Port to Solaris 10 'cat', which
+	exits with status 0 even after 'read' fails from a directory.
+
+2016-09-28  Jim Meyering  <meyering@fb.com>
+
+	build: placate GCC 7's -Wimplicit-fallthrough
+	* src/pcresearch.c (die): New macro.
+	(Pexecute): Use it in place of offending uses of error,
+	to placate GCC 7's -Wimplicit-fallthrough.
+	Include verify.h.  Since this is grep's first explicit use of this
+	gnulib module, ...
+	* bootstrap.conf (gnulib_modules): Add verify.
+
+	gnulib: update to latest; for ...
+	This includes the following:
+	 - a getprogname-vs-openbsd-5.1 portability fix
+	 - "fallthru" comment-adding changes for dfa and unistr/u8-uctomb-aux.c
+	 - another getprograme fix to avoid breaking newer glibc
+
+2016-09-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: reword .git old-GCC warning
+	* configure.ac (gl_gcc_warnings): Reword diagnostic.
+	Suggested by Assaf Gordon in:
+	http://lists.gnu.org/archive/html/grep-devel/2016-09/msg00024.html
+
+	build: port .git builds to newer GCC
+	* configure.ac (gl_gcc_warnings): Omit duplicate copy of 'main'.
+	Problem reported by Assaf Gordon in:
+	http://lists.gnu.org/archive/html/grep-devel/2016-09/msg00024.html
+
+	build: port .git builds to older GCC
+	Problem reported by Dagobert Michelsen in:
+	http://lists.gnu.org/archive/html/grep-devel/2016-09/msg00018.html
+	* configure.ac (gl_gcc_warnings): Default to false if .git
+	exists but GCC is too old.
+
+2016-09-27  Jim Meyering  <meyering@fb.com>
+
+	tests/long-pattern-perf: avoid false-failure due to cache speed
+	* tests/long-pattern-perf: This test would fail semi-consistently
+	on some systems, probably because the smaller regexp fit well
+	within cache, yet the larger one did not.  In that case, there
+	was a relative speed difference greater than 20x and the test
+	would fail.  Quadruple the sizes, to make that less likely.
+	Also, construct the 10x larger regexp directly from the smaller,
+	rather than relying on seq with endpoints to induce that
+	approximate size ratio.  Reported by Bruce Dubbs in
+	https://lists.gnu.org/archive/html/grep-devel/2016-09/msg00013.html
+
+2016-09-24  Jim Meyering  <meyering@fb.com>
+
+	build: avoid "./configure && make dist" missing-dep. failure
+	* Makefile.am (run-syntax-check): Depend on "all", to avoid a
+	parallel build failure due to a missing dependency. Reported by
+	Paul Eggert in https://bugs.gnu.org/24256#50
+
+2016-09-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2016-09-24  Jim Meyering  <meyering@fb.com>
+
+	tests/fmbtest: avoid false-failure due to reliance on MB-correct sed
+	* tests/fmbtest: Several of these tests would mistakenly fail due to
+	postprocessing with a combination of sed and locale support that failed
+	to handle some multibyte characters in the cs_CZ.UTF-8 locale.  Instead
+	of relying on sed's multibyte support or anything locale-related to
+	perform this simple filtering, just use this: tr -cs '0-9' '[ *]'
+	Also, rather than exporting LC_ALL, just set it for each command.
+	Reported by Nelson H. F. Beebe.
+	https://bugs.gnu.org/24534
+
+	tests: revamp multibyte-white-space test to be more permissive
+	This test elicits too many failures.  Whether a system has accurate
+	unicode "whitespace" attributes should not influence whether grep's
+	test suite passes.  In many cases, now you will see a warning that
+	some multibyte characters do not pass whitespace-related tests, but
+	this test no longer fails.  However, if you run this test on a modern
+	enough system, it does require that \s and \S do work properly with
+	most of the listed characters.
+	* tests/multibyte-white-space: Confirm that Fedora 24's locale
+	tables still declare those four Unicode code points *not* whitespace.
+	Honor a new column telling how to handle failure.  Provide more
+	information in each diagnostic.
+	Reported by Nelson H. F. Beebe.
+	https://bugs.gnu.org/24530
+
+	tests: avoid erroneous failure of pcre-jitstack test
+	On some systems (*BSD), 'ulimit -s unlimited' would fail, yet the
+	test for that mistakenly masked the failure, so the following grep
+	command ended up failing with a segfault.
+	* tests/pcre-jitstack: Don't mask the ulimit failure.
+	Reported privately by Nelson H. F. Beebe.
+	https://bugs.gnu.org/24524
+
+2016-09-23  Jim Meyering  <meyering@fb.com>
+
+	grep: avoid unwarranted "input file 'F' is also the output" on *BSD
+	On *BSD systems, any command like "echo y | grep x", where grep reads
+	from a pipe and writes to standard output, would mistakenly emit this:
+	  grep: input file '(standard input)' is also the output
+	* src/grep.c (grepdesc): Ensure that the file descriptor we're
+	reading is a regular one before using SAME_INODE to test whether
+	it is the same as the descriptor open on standard output.
+	Nelson Beebe reported privately that the foad1 tests failed on many
+	BSD systems.  Exposed by commit v2.25-2-gaf6af28.
+	https://bugs.gnu.org/24522
+
+	tests: avoid backref-multibyte-slow false failure
+	* tests/backref-multibyte-slow (max_seconds): If we calculate
+	a max duration of 1 second, use 5.  Otherwise, on high-latency
+	systems, it would be way too easy for the duration of the final
+	test run to exceed that limit.  Reported by Nelson H. F. Beebe.
+	http://bugs.gnu.org/24516
+
+2016-09-22  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest; for getprogname-vs-AIX fix
+
+2016-09-18  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: add news entry for fix to bug#24233
+	* NEWS (Bug fixes): Add an entry describing bug#24233.
+	The bug was fixed by commit v2.25-77-gad468bb, by chance.
+
+2016-09-15  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+
+2016-09-10  Jim Meyering  <meyering@fb.com>
+
+	dfa: reflect move of grep's DFA code to gnulib
+	Now that the core DFA code and tests reside in gnulib,
+	remove the copies here and use what gnulib provides.
+	* bootstrap.conf: Use the dfa module.
+	* cfg.mk: Remove settings involving files that have moved.
+	(_gl_TS_unmarked_extern_functions): Add dfaerror and dfawarn.
+	It is wrong/ugly to have to define these global symbols to use
+	the dfa module, but we'll adjust that separately.
+	* po/POTFILES.in: Apply s/src/lib/ to src/dfa.c.
+	* src/Makefile.am: Remove mention of dfa.[ch] and localeinfo.[ch].
+	* tests/Makefile.am: Remove mention of the tests that we have
+	moved to the gnulib module.
+	* src/dfa.c: Remove file.
+	* src/dfa.h: Likewise.
+	* src/localeinfo.c: Likewise.
+	* src/localeinfo.h: Likewise.
+	* tests/dfa-match: Likewise.
+	* tests/dfa-match-aux.c: Likewise.
+	* tests/invalid-char-class: Likewise.
+
+	gnulib: update to latest, for new dfa module
+
+2016-09-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: encoding errors suppress just their line
+	From a suggestion by Marcello Perathoner (Bug#22838).
+	* NEWS, doc/grep.texi (File and Directory Selection): Document this.
+	* src/grep.c (print_line_head): Do not suppress later output lines
+	merely because an earlier output line would have had an encoding error.
+	* tests/encoding-error: Test for the new behavior.
+
+2016-09-08  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest, for getprogname fixes
+
+2016-09-08  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: additional change new option for anchored searches
+	* src/dfa.c (dfaexec_main): Do it.
+
+2016-09-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: define "context lines"
+	Reported by Igor Bogomazov via Santiago Ruano Rincón (Bug#24024).
+	* doc/grep.texi (Context Line Control): Define "context lines".
+
+	build: update gnulib submodule to latest
+
+2016-09-05  Jim Meyering  <meyering@fb.com>
+
+	maint: switch from gnulib's progname to getprogname module
+	* gnulib: Update to latest, for its new getprogname module.
+	* bootstrap.conf (avoided_gnulib_modules): Include the getprogname
+	module rather than the now-obsolescent progname.
+	* src/grep.c: Include "getprogname.h" rather than "progname.h"
+	and remove any use of set_program_name.
+	* tests/dfa-match-aux.c (main): Likewise.
+	* tests/get-mb-cur-max.c (main): Likewise.
+	* src/grep.c (usage, main): Use getprogname() in place of program_name.
+
+2016-09-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: minor cleanup of previous change
+	* src/dfa.c (dfaexec_main): Omit redundant code and reindent.
+
+2016-09-02  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: additional change new option for anchored searches
+	* src/dfa.c (dfaexec_main): Do it.
+
+	dfa: use single-byte algorithm even in non-UTF-8
+	* src/dfa.c (dfaexec_main): Do it.  (This was inadvertently
+	omitted in a recent patch.)
+
+2016-09-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: merge xalloc.h changes from Gawk
+	* src/dfa.h (_GL_ATTRIBUTE_MALLOC): Define here, as other
+	Gnulib .h files do.  This is more consistent with Gawk.
+	* src/dfa.c: Include xalloc.h, since dfa.h no longer does so.
+	Include localeinfo.h later; we don't care about order, but Gawk does.
+
+2016-09-02  Arnold Robbins  <arnold@skeeve.com>
+
+	dfa: port to C90
+	* src/dfa.c (dfamust): Avoid declarations after statement (Bug#21486).
+
+2016-09-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: new option for anchored searches
+	This follows up on a suggestion by Norihiro Tanaka (Bug#24262).
+	* src/dfa.c (struct regex_syntax): New member 'anchor'.
+	(char_context): Use it.
+	(dfasyntax): Change signature to specify it, along with the old
+	FOLD and EOL args, as a single DFAOPTS arg.  All uses changed.
+	* src/dfa.h (DFA_ANCHOR, DFA_CASE_FOLD, DFA_EOL_NUL): New constants
+	for dfasyntax new last arg.
+
+2016-09-02  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: simplify and optimize at initial state in execution
+	* src/dfa.c (skip_remains_mb): Remove argument *pwc.  Update calller.
+	(dfaexec_main): Simplify and optimize at initial state (Bug#24261).
+
+	dfa: simplify to find state index for state 0
+	* src/dfa.c (dfastate): Simplify to find state index for state 0.
+
+2016-09-01  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	tests: add a new test for SJIS locale
+	* tests/sjis-mb: Add a new test.  It fails in grep-2.25 or prior.
+
+2016-09-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: update NEWS
+	* NEWS: Describe previous change.
+
+	grep: use regex fastmap unless -i
+	This builds on a suggestion by Norihiro Tanaka (Bug#24009).
+	* src/dfasearch.c (GEAcompile): Use a fastmap unless -i.
+	This improves performance 20x for me using the first benchmark
+	given in Bug#24009.
+
+	grep: improve dfasearch storage management
+	This patch is mostly refactoring, with a bit of performance tweaking.
+	It is done in preparation for a fix for Bug#24009.
+	* src/dfasearch.c (patterns): Now of type struct re_pattern_buffer *
+	instead of an anonymous struct pointer, since there is no longer
+	any need to keep regs here.  All uses changed.
+	(GEAcompile): Use patlim instead of a hard-to-follow "total".
+	Use x2nrealloc to avoid potential O(N**2) reallocation algorithm.
+	Initialize just the pattern members that need clearing.
+	(EGexecute): Put regs into a static variable, as this code did
+	before 2001-02-18, as there is no need to have a separate set of
+	regs for each pattern.  Explain the "Q@#%!#" comment better.
+
+2016-09-01  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: remove separation by context in transition in non-UTF8 multibyte locales
+	* src/dfa.c (struct dfa): Remove member curr_dependent.  All uses
+	removed.
+
+2016-09-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: document previous change
+	* NEWS: Adjust to match previous change.
+
+2016-09-01  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: avoid invalid character matching period
+	* dfa.c (transit_state): Avoid invalid character matching period.
+
+	dfa: use single-byte algorithm even in non-UTF-8
+	Even in non-UTF8 locales, if the current input character
+	is single byte, we can use CSET to match ANYCHAR.
+	* src/dfa.c (struct dfa): New member canychar.
+	Cache index of CSET for ANYCHAR.
+	(lex): Make CSET for ANYCHAR.
+	(state_index): Simplify.
+	(dfastate): Consider CSET for ANYCHAR.
+	(transit_state_singlebyte, transit_state): Remove handling for eolbyte,
+	as we assume that eolbyte does not appear at current position.
+	(dfaexec_main): Use algorithm for single byte character to any single
+	byte character in input text always.
+	(dfasyntax): Initialize canychar.
+
+2016-09-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: avoid code duplication with -iF
+	This follows up on the -iF performance improvement (Bug#23752).
+	* NEWS: Simplify description of -iF improvement.
+	* src/dfa.c: Do not include wctype.h.
+	(lonesome_lower, case_folded_counterparts): Move to localeinfo.c.
+	(CASE_FOLDED_BUFSIZE): Move to localeinfo.h.
+	* src/grep.c: Do not include wctype.h.
+	(lonesome_lower): Remove.
+	(fgrep_icase_available): Use case_folded_counterparts instead.
+	Do not call it for the same character twice.
+	Return false on wcrtomb failures (which should never happen).
+	(fgrep_to_grep_pattern, main): Simplify.  Let fgrep_to_grep’s
+	caller fiddle with the global variables.
+	* src/localeinfo.c: Include <wctype.h>
+	(lonesome_lower, case_folded_counterparts):
+	Move here from src/dfa.c.  Return int, not unsigned int.
+	Verify that CASE_FOLDED_BUFSIZE is big enough.
+	* src/localeinfo.h (CASE_FOLDED_BUFSIZE): Now 32, so that
+	we don’t expose lonesome_lower’s size.
+	* src/searchutils.c (kwsinit): Return new kwset instead of
+	storing it via a pointer.  All callers changed.  Simplify a bit.
+
+2016-09-01  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: speed up -iF in multibyte locales
+	In a multibyte locale, if a pattern is composed of only single byte
+	characters and their all counterparts are also single byte characters
+	and the pattern does not have invalid sequences, grep -iF uses the
+	fgrep matcher, the same as in a single byte locale (Bug#23752).
+	* NEWS: Mention it.
+	* src/grep.c (lonesome_lower): New constant.
+	(fgrep_icase_available): New function.
+	(fgrep_to_grep_pattern): Simplify it.
+	(main): Use them.
+	* src/searchutils.c (kwsinit): New arg MB_TRANS; all uses changed.
+	Try fgrep matcher for case insensitive matching by grep -F in multibyte
+	locale.
+
+2016-08-31  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2016-08-31  Jim Meyering  <meyering@fb.com>
+
+	maint: avoid new 'make syntax-check' failure
+	* src/dfa.c (using_simple_locale): Prefer STREQ(a,b) over
+	strcmp(a,b) == 0.
+
+	gnulib: update to latest
+
+2016-08-31  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: make dfa.c fully thread-safe
+	This follows up on Zev Weiss’s recent patches to make the DFA code
+	thread-safe (Bug#24249).  It removes the remaining static
+	variables used by dfa.c.  These variables are locale-dependent, so
+	they would cause problems in multithreaded code where different
+	threads are in different locales (e.g., via uselocale).  I
+	abstracted most of the variables into a new localeinfo module.
+	* src/Makefile.am (grep_SOURCES): Add localeinfo.c.
+	(noinst_HEADERS): Add localeinfo.h.
+	* src/dfa.c: Include localeinfo.h.
+	(struct dfa): Remove multibyte member, as it is now part of
+	localeinfo.  New members simple_locale and localeinfo.
+	Put locale-related members at the end.
+	(mbrtowc_cache): Remove; now part of dfa->localeinfo.
+	(charclass_index): Rename back from dfa_charclass_index,
+	since it's private.
+	(unibyte_word_constituent): New arg DFA; use its sbctowc member.
+	(using_utf8, dfa_using_utf8, init_mbrtowc_cache, check_utf8):
+	Remove; now done by localeinfo members.  All uses changed.
+	(dfasyntax): New localeinfo arg.  Move to end to avoid forward decls.
+	Initialize the entire DFA.
+	(unibyte_c, check_unibyte_c): Remove; now in simple_locale member.
+	(using_simple_locale): Now takes bool instead of DFA.
+	Do the locale check here, rather than in the caller,
+	as the result is now cached in dfa->simple_locale.
+	(dfaalloc): Just allocate the DFA.  dfasyntax now initializes it.
+	* src/dfa.h: Add forward decl of struct localeinfo.
+	Adjust to new dfa.c API.
+	* src/dfasearch.c (localeinfo): New var, replacing former static
+	vars like mbrtowc_cache.
+	* src/localeinfo.c, src/localeinfo.h: New files.
+	* src/search.h: Include localeinfo.h.
+	(localeinfo): New decl.
+	* src/searchutils.c (mbclen_cache, build_mbclen_cache):
+	Remove.  All uses changed to localeinfo.
+	* tests/Makefile.am (dfa_match_aux_LDADD): Add localeinfo.o.
+	* tests/dfa-match-aux.c: Include localeinfo.h.
+	(main): Adjust to changes in DFA API.
+
+2016-08-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+	This should fix Bug#24323 reported by Dennis Clarke, where grep
+	does not build on Solaris 10 when compiled with Solaris Studio 12.4.
+
+2016-08-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: minor thread-safety cleanups
+	* src/dfa.c (struct lexer_state): Rename lexptr to ptr and lexleft
+	to left, for brevity.  All uses changed.
+	(struct dfa): Rename lexstate to lex and parsestate to parse,
+	for brevity.  All uses changed.
+	(using_simple_locale): Simplify boolean expression.
+	(FETCH_WC): Parenthesize uses of dfa macro arg.
+	(FETCH_WC, parse_bracket_exp, addtok_mb): Prefer suffix operators
+	on structure members when possible, for clarity.
+	(parse_bracket_exp): Check for buffer exhaustion before
+	dereferencing buffer pointer.
+	(struct lexptr): New type.
+	(push_lex_state, pop_lex_state): Use it.  Change from macros
+	PUSH_LEX_STATE and POP_LEX_STATE to static functions, and add
+	parameters to make them proper C functions.  All uses changed.
+	(lex): Simplify tests for \) and \|.  Avoid some string
+	duplication by using &"^..."[boolean].
+	(dfaalloc): Use xzalloc, not xcalloc with 1.
+
+2016-08-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: minor tweaks of initial buffer alloc
+	* src/grep.c (main): Allocate input buffer only when about
+	to do I/O.  Avoid int overflow on systems with 2 GiB pages.
+	Fix size_t overflow check.
+
+2016-08-20  Zev Weiss  <zev@bewilderbeest.net>
+
+	dfa: constify some function parameters
+	* src/dfa.c (char_context): Mark dfa parameter const.
+	(charclass_context): Likewise.
+
+	dfa: thread-safety: initialize mbrtowc_cache in dfa_init
+	* src/dfa.c (dfasyntax): Remove initialization of mbrtowc_cache.
+	(init_mbrtowc_cache): New function.
+	(dfa_init): Call it.
+	http://bugs.gnu.org/24259
+
+	dfa: thread-safety: eliminate static local variables
+	* src/dfa.c: Replace utf8 and unibyte_c static local variables with
+	static globals initialized by a new function dfa_init() which must be
+	called before any other dfa*() functions.
+	(dfa_using_utf8): Rename using_utf8() to dfa_using_utf8() for
+	consistency with other exported functions.
+	* src/dfa.h (dfa_using_utf8): Rename using_utf8() to dfa_using_utf8();
+	also add _GL_ATTRIBUTE_PURE.
+	(dfa_init): New function.
+	* src/grep.c (main), tests/dfa-match-aux.c (main): Call dfa_init().
+	* src/dfasearch.c (EGexecute): Replace using_utf8 with dfa_using_utf8.
+	* src/kwsearch.c (Fexecute): Likewise.
+	* src/pcresearch.c (Pcompile): Likewise.
+	http://bugs.gnu.org/24259
+
+	dfa: thread-safety: move regex syntax configuration into struct dfa
+	* src/dfa.c: move global variables holding regex syntax configuration
+	into a new struct (`struct regex_syntax') and add an instance of it to
+	struct dfa.  All references to the globals are replaced with
+	references to the dfa struct's new member.  As a side effect, a
+	`struct dfa' must be allocated with dfaalloc() and passed to
+	dfasyntax().
+	* src/dfa.h (dfasyntax): Add new struct dfa* parameter.
+	* src/dfasearch.c (GEAcompile): Allocate `dfa' earlier and pass it to
+	dfasyntax().
+	* tests/dfa-match-aux.c (main): Pass `dfa' to dfasyntax().
+	http://bugs.gnu.org/24259
+
+	dfa: thread-safety: move parser state into struct dfa
+	* src/dfa.c: move global variables holding parser state (`tok' and
+	`depth') into a new struct (`struct parser_state') and add an instance
+	of it to struct dfa.  All references to the globals are replaced by
+	references to the dfa struct's new member.
+	http://bugs.gnu.org/24259
+
+	dfa: thread-safety: move lexer state into struct dfa
+	* src/dfa.c: move global variables holding lexer state into a new
+	struct (`struct lexer_state') and add an instance of this struct to
+	struct dfa.  All references to the globals are replaced with
+	references to the dfa struct's new member.
+	http://bugs.gnu.org/24259
+
+2016-08-19  Zev Weiss  <zev@bewilderbeest.net>
+
+	dfa: thread-safety: remove dfa.c's "dfa" global
+	Remove the global dfa struct.  Instead, add a struct dfa pointer
+	parameter to each function that had been using the global.
+	* src/dfa.c (dfa): Remove file-scoped global.
+	(charclass_index): Remove now-unnecessary function.
+	(using_simple_locale): Add a dfa parameter and update all callers.
+	(FETCH_WC, parse_bracket_exp, lex, addtok_mb, addtok): Likewise.
+	(addtok_wc, add_utf8_anychar, atom, nsubtoks, copytoks): Likewise.
+	(closure, branch, regexp): Likewise.
+	(dfaparse): No longer set the global.
+	http://bugs.gnu.org/24260
+
+2016-08-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: tune list_files conversion to enum
+	* src/grep.c (grepdesc): Use a slightly more-efficient way to test
+	list_files.
+
+	grep: prefer bitwise to short-circuit when shorter
+	* src/grep.c (skip_devices, initialize_unibyte_mask, fillbuf, main)
+	* src/kwsearch.c (Fexecute): Prefer bitwise to short-circuit ops
+	when they are logically equivalent and the bitwise ops generate
+	shorter code on GCC 6.1 x86-64.
+	* src/grep.c (get_nondigit_option, parse_grep_colors):
+	Use c_isdigit instead of spelling it out with a short-circuit op.
+
+2016-08-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: use 64-bit when ulong is at least that wide
+	* src/dfa.c (charclass_word): Now unsigned long instead of unsigned.
+	(CHARCLASS_WORD_BITS): Now 64 on 64-bit platforms.
+	(CHARCLASS_PAIR, CHARCLASS_INIT): New macros.
+	(CHARCLASS_WORD_MASK): Now a static const, since it no longer
+	needs to be a macro.
+	(equal): Open-code rather than calling memcmp.
+	(add_utf8_anychar): Use CHARCLASS_INIT.
+
+	dfa: avoid uninitialized constants
+	Some compilers warn about 'static int const x;' on the grounds
+	that X should have an initializer.  Instead of worrying about
+	this, rewrite to avoid this sort of thing.
+	* src/dfa.c (emptyset): New function.
+	(parse_bracket_exp): Use it instead of 'equal' and a zero constant.
+	* src/dfasearch.c (struct patterns): Remove tag 'patterns'.
+	(patterns0): Remove zero constant.
+	(GEAcompile): Use memset instead of the zero constant.
+
+2016-08-17  Jim Meyering  <meyering@fb.com>
+
+	maint: avoid new "make syntax-check" failure
+	* src/dfa.c: Adjust comment not to go past column 80.
+
+	tests: pcre-jitstack: avoid false failure without base64 -d support
+	* tests/pcre-jitstack: Try harder to find a base64 decoder:
+	try 'base64 -d', 'base64 -D', 'openssl base64 -d' and perl's
+	MIME::Base64 decode_base64.  The old code would fail at least on
+	OS X, for which base64 expects -D or --decode.
+	Reported by Jack Howarth in http://bugs.gnu.org/24243.
+
+2016-08-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: minor refactoring and doc fixes
+	* NEWS: Improve description of recent change.
+	* src/dfa.c: Improve commentary.  Indent new code (and some
+	long-existing howlers) more in GNU style.
+	(dfa_state): Reorder members to make struct smaller on x86.
+	mb_trindex member is now state_num, not size_t, so that -1 is more
+	natural; all uses changed.
+	(struct dfa): Similarly for mb_trcount member.
+	(state_index): Compute values for new state components before
+	allocating the state, to make the code easier to understand.
+	(state_index, dfastate): Prefer A & ~B to other forms like (A & B)
+	!= A.
+	(dfastate, build_state, transit_state): In new code, prefer i++ to
+	++i in for-loop control.
+	(build_state, transit_state): In new code, prefer < to >.
+	(transit_state): Add to *PP in one assignment, rather than in a
+	loop.  Prefer !x to x == NULL.  Use xmalloc instead of xnmalloc,
+	since the size is a constant.  Do the size calculation as a signed
+	integer constant expression, so that the compiler diagnoses any
+	overflow.
+	(transit_state, free_mbdata): Tune by looping from -1 to N - 1,
+	rather than from 0 to N - 1 with a separate instance for -1.
+	(dfaexec_main): Rewrite to avoid side effects in if-part.
+	(free_mbdata): Simplify.
+
+	dfa: port to C90
+	* src/dfa.c (transit_state, dfa_supported, dfamust):
+	Don't use declarations after statements.
+	If I recall correctly, gawk still wants to port to C90.
+
+	dfa: fix context newline confusion
+	* src/dfa.c (transit_state): Fix "... & ~0" that was evidently
+	intended to be "... & ~1".  Do index calculation in a simpler way,
+	that uses just addition (Bug#21486).
+
+2016-08-16  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: improve leading "." with non-UTF8 multibyte
+	In non-UTF8 multibyte locales, matching the dot expression is very
+	slow, as the next state is calculated on demand.  This change caches
+	the result for the typical case (Bug#21486).
+
+	Compare the run times of this command before and after this change,
+	on a i5-4570 CPU @ 3.20GHz using rawhide (~fedora 22) and compiled
+	with gcc 5.1.1 20150618:
+	yes "$(printf 'a%38db\n' 0)" | head -1000000 >in
+	env LC_ALL=ja_JP.eucJP time -p \
+	src/grep .......................................... in
+	  Before: 19.10
+	  After :  0.55
+
+	* NEWS: Document this.
+	* src/dfa.c: (struct dfa_state): New members curr_dependent, mb_trindex.
+	(MAX_TRCOUNT): New constant.
+	(struct dfa): New members mb_trans, mb_trcount.
+	(state_index): Initialize new members of struct dfa_state and calculate
+	dependency on context of next character for positions for dot.
+	(dfastate): Calculate follows positions for dot if enabled.
+	(realloc_trans_if_necessary): Allocate transition tables.
+	(build_state): Use new constant and reset transition tables.
+	(transit_state): Use cache for transition from a state with the dot
+	expression.
+	(free_mbdata): Deallocate transition tables.
+
+2016-08-06  Jim Meyering  <meyering@fb.com>
+
+	tests: standardize on 10-second timeouts to avoid rare false failure
+	In a parallel test run, it is not unusual to exceed a timeout of
+	1-3 seconds.  Increase several from 3 or fewer to 10 seconds.
+	* tests/skip-device: Increase timeout from 2 to 10 seconds.
+	* tests/grep-dev-null-out: Likewise, but s/1/10/.
+	* tests/pcre-invalid-utf8-input: Likewise, but s/3/10/.
+	* tests/dfa-match: Likewise.
+	* tests/pcre-invalid-utf8-infloop: Likewise.
+	* tests/pcre-infloop: Likewise.
+	* tests/max-count-overread: Likewise.
+	* tests/invalid-multibyte-infloop: Likewise.
+	Prompted by http://bugs.gnu.org/24159.
+
+	tests/backref-multibyte-slow:: avoid false positive
+	* tests/backref-multibyte-slow: When redirecting the "fast" LC_ALL=C
+	run's output to /dev/null, we got an artificially low timing (of 0),
+	due to grep's own stdout-vs-/dev/null optimization.  With an initial
+	timing of 0 on that first run, the derived timeout for the UTF-8 run
+	(which redirects to a file) would be a mere 1 second.  The fix: also
+	redirect that first run's output to a file, not to /dev/null.
+
+2016-08-05  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: minor fix for whether dfa is "fast"
+	* src/dfa.c (dfaoptimize): When a UTF-8 optimization succeeds for
+	a DFA (it can use single-byte code paths), record that by setting
+	its ->fast flag.
+
+2016-07-25  Jim Meyering  <meyering@fb.com>
+
+	grep: print "filename:lineno:" in invalid-regex diagnostic
+	Determining the file name and line number is a little tricky because
+	of the way the regular expressions are all concatenated onto a newline-
+	separated list.  By the time grep would compile regular expressions,
+	the <filename,lineno> origin of each regexp was no longer available.
+	This patch adds a list of filename,first_lineno pairs, one per input
+	source, by which we can then map the ordinal regexp number to a
+	filename,lineno pair for the diagnostic.
+
+	* src/dfasearch.c (GEAcompile): When diagnosing an invalid regexp
+	specified via -f FILE, include the "FILENAME:LINENO: " prefix.
+	Also, when there are two or more lines with compilation failures,
+	diagnose all of them, rather than stopping after the first.
+	* src/grep.h (pattern_file_name): Declare it.
+	* src/grep.c: (struct FL_pair): Define type.
+	(fl_pair, n_fl_pair_slots, n_pattern_files, patfile_lineno):
+	Define globals.
+	(fl_add, pattern_file_name): Define functions.
+	(main): Call fl_add for each type of the following: -e argument,
+	-f argument, command-line-specified (without -e) regexp.
+	* tests/filename-lineno.pl: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	* NEWS (Improvements): Mention this.
+	Initially reported by Gunnar Wolf in https://bugs.debian.org/525214
+	Forwarded to grep's bug list by Santiago Ruano Rincón as
+	http://debbugs.gnu.org/23965
+
+2016-07-24  Jim Meyering  <meyering@fb.com>
+
+	tests: add coreutils' perl-driven test framework
+	* configure.ac: Set the AM_CONDITIONAL variable, HAVE_PERL.
+	* tests/Coreutils.pm: New file.
+	* tests/CuSkip.pm: New file.
+	* tests/CuTmpdir.pm: New file.
+	* tests/no-perl: New file.
+	* tests/Makefile.am: Set up to use .pl tests:
+	(TEST_EXTENSIONS, TESTSUITE_PERL, TESTSUITE_PERL_OPTIONS): Define.
+	(SH_LOG_COMPILER, PL_LOG_COMPILER): Define.
+	(EXTRA_DIST): Add the four new file names.
+
+	doc: omit an excess word in HACKING
+
+2016-07-21  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: always match single line only with DFA superset
+	\n cannot occur inside a multibyte character.  So an input always
+	matches single line only with DFA superset.
+
+	* src/dfasearch.c (EGexecute): Simplify it with above.
+
+2016-07-15  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: fix whitespace problems
+	* src/dfa.c: Use GNU style for pointer decls.
+
+2016-07-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: modernize HACKING a bit
+	* HACKING: Remove some ancient history to simplify maintenance.
+
+2016-07-14  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: minor style changes for -F crash fix
+	* src/kwset.c (memoff2_kwset): Use ?: instead of if-else.
+
+2016-07-14  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: fix -F crash when alternating duplicates
+	grep -F crashes with a pattern like 0\n0.
+	This bug was introduced in 966f6586fbce3081ce6e5e2f9b55301b0ec3d2b4.
+
+	* src/kwset.c (memoff2_kwset): If two characters are the same,
+	use memchr instead of memchr2.
+	* tests/two-chars: New test.
+	* tests/Makefile.am (TESTS): Add it.
+
+2016-07-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: fix comments to match code better
+	* src/dfa.c: Fix comments.
+
+2016-07-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: don't treat null bytes specially
+	* src/dfa.c (transit_state): Do not treat null byte specially
+	when eolbyte == '\n'.
+
+2016-07-06  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: don't distingish letter in non-POSIX locales
+	For non-POSIX locales, dfa does not support word delimiter
+	support, so remove distinction between letters and non-letters.
+	* src/dfa.c (struct dfa): Remove members initstate_letter,
+	initstate_others.  All uses removed.  New member initstate_notbol.
+	(dfaanalyze, dfaexec_main): Replace old members with new member.
+	(wchar_context): Remove.  Update callers.
+
+2016-07-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: minor cleanups for non-POSIX simplification
+	* src/dfa.c (transit_state_singlebyte): Remove unnecessary 'const'
+	from arg; we usually don't bother with 'const' on locals.
+	(transit_state_singlebyte): Omit '!= NULL' in boolean context.
+	Use assert rather than abort.
+
+2016-07-06  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: simplify for non-POSIX locales
+	Simplify the dfa code, since it no longer supports ranges,
+	collating elements, and equivalent classes in non-POSIX locales.
+	* src/dfa.c (struct dfa): Remove mb_match_lens.
+	(enum status_transit_state, match_anychar)
+	(check_matching_with_multibyte_ops, transit_state_consume_1char):
+	(State_transition): Remove.
+	(transit_state_singlebyte): Accepts pointer-to-pointer position,
+	instead of pointer, and no longer accept pointer to next state.
+	Return next state instead of status_transit_state.  All callers
+	changed.
+	(transit_state_singlebyte, transit_state): Simplify.
+	(dfaexec_main): Now transit_state is called only when next character
+	matches with ANYCHAR.
+
+2016-06-14  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: propagate more changes from grep.texi
+	Problem reported by Björn Voigt in: http://bugs.gnu.org/23763#27
+	* doc/grep.in.1: Fix more inconsistencies with grep.texi.
+
+2016-06-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: remove obsolete MS-DOS mention
+	* doc/grep.in.1: Remove obsolete discussion of MS-DOS heuristics.
+	Problem reported by Björn Voigt in: http://bugs.gnu.org/23763
+
+2016-06-09  Zev Weiss  <zev@bewilderbeest.net>
+
+	grep: do pagesize initialization and buffer allocation earlier
+	* src/grep.c (reset, main): We're going to need pagesize and buffer
+	initialized anyway, so we might as well do so unconditionally early on
+	rather than checking on every call to reset().
+	http://bugs.gnu.org/23717
+
+	grep: remove unnecessary dirdesc variable.
+	* src/grep.c (grepdirent): Remove dirdesc variable and just use
+	fts_cwd_fd directly, since the fts_options test was guaranteed to
+	succeed (and fts_cwd_fd was already being used directly in fstatat()
+	anyway).  http://bugs.gnu.org/23716
+
+	grep: convert list_files to an enum
+	* src/grep.c: Make list_files a tristate enum instead of an int.
+	http://bugs.gnu.org/23715
+
+	grep: correct a stale comment and remove dead code
+	* src/grep.c (grepdesc): The `grep()' function no longer has
+	special-case negative return values, since it no longer handles
+	directories, so don't bother checking for them.
+	http://bugs.gnu.org/23714
+
+	maint: replace bitwise with logical OR
+	* src/grep.c (main): replace bitwise ORs with logical ORs where it
+	makes sense (when dealing with boolean conditions as opposed to
+	bitmasks).  http://bugs.gnu.org/23713
+
+	maint: mark a couple of static variables const
+	* src/dfa.c (parse_bracket_exp): mark zeroclass const.
+	* src/dfasearch.c: mark patterns0 const.
+	http://bugs.gnu.org/23712
+
+2016-06-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: fix similar bug in exit status test
+	* tests/grep-dir (status_range): New shell function.
+	Use it to fix bug where $? was not saved properly.
+
+2016-06-03  Zev Weiss  <zev@bewilderbeest.net>
+
+	tests: fix bug in exit status test
+	When checking $? against multiple values, save its value in another
+	variable and check that so as to avoid tests beyond the first seeing a
+	$? clobbered by earlier ones.
+
+	* tests/status: save $? in a temporary variable before testing it.
+
+2016-06-02  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: more simplification of dfaexec_main
+	* src/dfa.c (dfaexec_main): Failure at an acceptable position and demand
+	to build state is unlikely.  So go next loop without checking them after
+	a newline.  This commit induces no semantic change.
+
+2016-06-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: correct attribution
+	* build-aux/git-log-fix: Fix attribution of primary Aho-Corasick patch
+
+2016-06-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: simplify -F Aho-Corasick a bit
+	This removes some tuning that complicates the code without providing
+	performance benefits that I could measure (GCC 6.1, x86-64).
+	(acexec_trans): Do not hand-unroll.  Unduplicate the code for a
+	transition step.
+
+	* src/kwset.c (struct kwset.kwsexec, bmexec, acexec_trans, acexec)
+
+2016-06-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: minor cleanups for -F Aho-Corasick
+	* NEWS: Don't claim 7x, as the value seems to be system-dependent.
+	* src/kwset.c (struct kwset.kwsexec, bmexec, acexec_trans, acexec):
+	* src/kwset.c, src/kwset.h (kwsalloc, kwsexec):
+	Don't put 'const' into the declaration when that is irrelevant to
+	the API.  More generally, don't bother with 'const' when it's only
+	a local so it is reasonably obvious to a reader that it is 'const'
+	anyway.  It would be overkill to add 'const' to all locals that
+	never change.
+	* src/kwset.c (U): Avoid unnecessary parens.
+	(treefails, memoff2_kwset, bmexec_trans, bmexec, cwexec, acexec_trans):
+	Prefer SIZE_MAX to (size_t) -1.
+	(bmexec_trans, cwexec, acexec_trans):
+	Remove attributes for static functions that no longer seem needed.
+	(memoff2_kwset): Rename from memchr2_kwset, since it returns
+	an offset, not a pointer.  All uses changed.
+	(cwexec, acexec_trans) [lint]: Remove initialization that is no
+	longer needed; at least, GCC 6.1 x86-64 does not need it.
+	(acexec_trans): Clarify code by using nesting rather than 'continue'.
+
+2016-06-02  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: use memchr2 for two patterns of a character
+	* src/kwset.c (memchr2_kwset): Add a new function.  grep uses memchr2 to
+	search just two letters.
+	(cwexec, acexec_trans): Use it.
+
+	grep: -F multiword longest match not always needed
+	Searching multiple fixed words, grep immediately returns without longest
+	match if not needed.  Without this change, grep tries longest match for
+	multiple words even if not needed.
+	* src/kwset.c (kwsexec, acexec, cwexec, bmexec): Add a bool argument
+	for whether longest match is needed.  All callers changed.
+	* src/kwset.h (kwsexec): Update prototype.
+
+2016-06-02  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: use Aho-Corasick algorithm to search multiple fixed words
+	Searching multiple fixed words, grep used the Commentz-Walter
+	algorithm, but this was O(m*n) and was very slow in the worst case.
+	For example:
+
+	  - input: yes `printf %040d` | head -10000000
+	  - word1: x0000000000000000000
+	  - word2: x
+
+	This change instead uses the Aho-Corasick algorithm to search multiple
+	fixed words.  It uses a high-quality trie-building function that is
+	already defined for Commentz-Walter in kwset.c.
+
+	I see 7x speed-up even for a typical case on Fedora 21 with a 3.2GHz i5
+	by this change.  Using best-of-5 trials for the benchmark:
+
+	    find /usr/share/doc/ -type f |
+	    LC_ALL=C time -p xargs.sh src/grep -Ff /usr/share/dict/linux.words >/dev/null
+
+	The results were:
+
+	    real 11.37  user 11.03  sys 0.24  [without the change]
+	    real 1.49   user 1.31   sys 0.15  [with the change]
+
+	* src/kwset.c (struct kwset): Add a new member 'mode'.
+	(kwsalloc): Use it.
+	All callers are changed.
+	(kwsincr): Using Aho-Corasick algorithm, build tries in normal order.
+	(acexec_trans, acexec): Add a new function.
+	(kwsexec): Use it.
+	* src/kwset.h (kwsalloc): Update a prototype.
+	* NEWS (Improvements): Mention it.
+
+2016-05-13  Jim Meyering  <meyering@fb.com>
+
+	maint: do not let a LANGUAGE envvar setting perturb tests
+	E.g., running "LANGUAGE=eo make check" would provoke a failure
+	of the encoding-error test, on systems that mistakenly let that
+	envvar trump the setting of LC_ALL.
+	* tests/envvar-check: New file, copied from coreutils.
+	* tests/Makefile.am (EXTRA_DIST): Add it.
+	(TESTS_ENVIRONMENT): Source it.
+	Also select TMPDIR as we do for coreutils tests.
+	Reported by Benno Schulenberg in http://bugs.gnu.org/23527.
+
+2016-05-02  Jim Meyering  <meyering@fb.com>
+
+	maint: avoid NEWS syntax-check failure
+	* NEWS: Move the mention of the /dev/null speed-up from the
+	block for 2.25 into the current, in-preparation block.
+
+2016-05-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: prefer bool for boolean
+	* src/dfa.c (syntax_bits_set, dfasyntax, using_utf8, FETCH_WC)
+	(POP_LEX_STATE, State_transition):
+	* src/dfa.h (using_utf_8):
+	Use bool for boolean.
+
+2016-05-01  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: stop exporting internal functions
+	* src/dfa.c, src/dfa.h (dfaparse, dfaanalyze, dfastate, dfainit):
+	Now static.
+
+	dfa: prefer bool at DFA interfaces
+	* src/dfa.c (struct dfa, dfasyntax, dfaanalyze, dfaexec_main)
+	(dfaexec_mb, dfaexec_sb, dfaexec_noop, dfaexec, dfacomp):
+	* src/dfa.h (dfasyntax, dfacomp, dfaexec, dfaanalyze):
+	* src/dfasearch.c (EGexecute):
+	Use bool for boolean.
+
+2016-05-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: speed up checking for character boundary
+	This should help performance with gawk; not so much with grep.
+	Suggested by Norihiro Tanaka in: http://bugs.gnu.org/18777
+	* src/dfa.c (never_trail): New static var.
+	(dfasyntax): Initialize it.
+	(skip_remains_mb): Use it to speed up a common case in Gawk.
+
+	grep: /dev/null output speedup
+	This sped up 'seq 10000000000 | grep . >/dev/null' by a factor of
+	380,000 on my platform (Fedora 23, x86-64, AMD Phenom II X4 910e,
+	en_US.UTF-8 locale).
+	* NEWS: Document this.
+	* src/grep.c (grepbuf): exit_on_match no longer implies that -q
+	was specified, so when a match is found, exit with exit_failure if
+	an error was also found.
+	(grepdesc): Omit unnecessary S_ISREG and st_ino checks.
+	out_stat.st_ino is zero if stdout is not a regular file,
+	and this cannot possibly equal st->st_ino.
+	(main): Omit duplicate initialization of exit_failure.  Do not
+	bother with isatty unless -q is not used and stdout is a character
+	special file and --color=auto and TERM says colorization is
+	possible.  Most importantly, set exit_on_match if the output is
+	/dev/null.
+	* tests/grep-dev-null-out: New test.
+	* tests/Makefile.am (TESTS): Add it.
+	* tests/status: Do not require grep to actually read all the input
+	files when the output is /dev/null and a matching line has been
+	found.
+
+2016-04-21  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.25
+	* NEWS: Record release date.
+
+2016-04-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: remove dependency on btowc
+	MirOS BSD btowc is a macro that (when GCC is being used) hardcodes
+	btowc (0x80) == WEOF regardless of locale, which contradicts
+	future POSIX in the C locale.  Instead of bothering to develop a
+	Gnulib workaround for the btowc incompatibility, use mbrtowc,
+	which we are using elsewhere and fixing anyway, and are caching so
+	it is fast here.  Problem reported by Nelson H. F. Beebe via Jim
+	Meyering in: http://bugs.gnu.org/23269#14
+	* bootstrap.conf (gnulib_modules): Remove btowc.
+	* src/dfa.c (struct dfa): Remove mbrtowc_cache member, replacing with ...
+	(mbrtowc_cache): ... this new static var.  All uses changed.
+	(dfambcache): Remove; now done by setsyntax.  Call removed.
+	(is_valid_unibyte_character): Remove.
+	(IS_WORD_CONSTITUENT): Remove this macro, replacing it with ...
+	(unibyte_word_constituent): ... this new function.  It uses
+	mbrtowc_cache rather than btowc.
+	(dfasyntax): Initialize mbrtowc_cache before using it.
+
+2016-04-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: minor doc tweaks inspired by Debian
+	Problem reported by Santiago Ruano Rincón in: http://bugs.gnu.org/22911
+	* doc/grep.in.1:
+	* doc/grep.texi (Matching Control, grep Programs)
+	(Regular Expressions):
+	Document -e, -f, and PCRE more carefully.
+
+2016-04-10  Jim Meyering  <meyering@fb.com>
+
+	maint: remove unused mbtoupper function
+	* src/searchutils.c (mbtoupper): Remove now-unused function.
+	Also remove inclusion of <assert.h>, since this change removed
+	the final use of assert.
+	* src/search.h (mbtoupper): Remove declaration.
+
+2016-04-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: in C locale, all bytes are valid characters
+	This works around glibc bug 19932:
+	https://sourceware.org/bugzilla/show_bug.cgi?id=19932
+	The actual bug fix was the update to the current version of Gnulib.
+	grep problem reported by Björn Jacke in: http://bugs.gnu.org/23234
+	* NEWS: Mention this.
+	* doc/grep.texi (File and Directory Selection): Crossref to LC_*
+	section.  Suggest why -a or LC_ALL=C might be useful.
+	(Environment Variables): Mention 'locale -a'.
+	Say that LC_CTYPE also specifies encoding, and that every
+	byte is a valid character in the C or POSIX locale.
+	* tests/c-locale: New test.
+	* tests/Makefile.am (TESTS): Add it.
+
+	build: update gnulib submodule to latest
+
+2016-04-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Give another example of binary file processing
+	Problem reported by Shlomi Fish
+	* doc/grep.texi (File and Directory Selection):
+	Document that 'q$' might match 'q' followed by a NUL
+	if --binary-files=binary is in effect.
+
+2016-04-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: test egrep/fgrep help only if our grep
+	Problem reported by Christian Weisgerber in: http://bugs.gnu.org/23146
+	* tests/Makefile.am (TESTS_ENVIRONMENT):
+	Test egrep and fgrep only if they use our grep.
+
+2016-03-29  Jim Meyering  <meyering@fb.com>
+
+	tests: remove spurious test of egrep
+	* tests/reversed-range-endpoints: Do not test egrep here.
+	There is already a test of grep -E.
+	Prompted by http://bugs.gnu.org/23146
+
+2016-03-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: -Pz no longer misdiagnoses [^a]
+	Problem reported by Michael Jess.
+	* NEWS: Document this.
+	* src/pcresearch.c (Pcompile): Do not diagnose [^ when [ is unescaped.
+	* tests/pcre: Test for the bug.
+
+2016-03-22  Jim Meyering  <meyering@fb.com>
+
+	maint: move new 'Improvements' blurb into proper section
+	* NEWS (Improvements): Move this new section from within the block
+	for the already-released 2.24 into the proper "next-release" block.
+	Also, retain the 2-blank-line separator between blocks.
+
+2016-03-18  Jim Meyering  <meyering@fb.com>
+
+	maint: avoid spurious "binary file ... matches" in generated THANKS
+	* Makefile.am (THANKS): Don't apply grep to a stream containing
+	NUL bytes.  Sync this rule from the one in coreutils: it was missing
+	some improvements.
+	Reported by Bailes Magio in http://bugs.gnu.org/22899
+
+2016-03-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: -oz now outputs null bytes, not newlines
+	* NEWS: Document this.
+	* doc/grep.texi (Other Options): Clarify that -z affects output
+	as well as input data.
+	* src/grep.c (print_line_middle): Output eolbyte, not newline, if -o.
+	* tests/null-byte: Test -o too.
+	* tests/pcre-context: Adjust test to match new behavior.
+
+2016-03-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: use errno consistently in write diagnostics
+	Feature request and initial version reported by Assaf Gordon in:
+	http://bugs.gnu.org/23031
+	* NEWS: Document this.
+	* src/grep.c: Include <stdarg.h>.
+	(stdout_errno): New static var.
+	(write_error_seen): Remove; superseded by stdout_errno.
+	All uses changed.
+	(putchar_errno, fputs_errno, printf_errno, fwrite_errno)
+	(fflush_errno): New static functions.
+	(print_filename, print_sep, print_offset, print_line_head)
+	(print_line_middle, print_line_tail, prline, prtext, grep)
+	(grepdesc): Use them.
+	* tests/write-error-msg: New file.
+	* tests/Makefile.am (TESTS): Add it.
+
+2016-03-10  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.24
+	* NEWS: Record release date.
+
+2016-02-28  Jim Meyering  <meyering@fb.com>
+
+	maint: add dist-check.mk
+	This file augments "make distcheck" rules.
+	* dist-check.mk: New file, from coreutils via gzip.
+	* Makefile.am (EXTRA_DIST): Add it.
+	* cfg.mk: Include it.
+
+2016-02-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: -Pz is incompatible with ^ and $
+	Problem reported by Sergei Trofimovich in: http://bugs.gnu.org/22655
+	* NEWS: Document this.
+	* src/pcresearch.c (Pcompile): Warn with -Pz and anchors.
+	* tests/pcre: Test new behavior.
+
+2016-02-21  Jim Meyering  <meyering@fb.com>
+
+	tests: test cleanup
+	* tests/z-anchor-newline: Remove test artifact that would write
+	to /t/x.
+
+2016-02-20  Jim Meyering  <meyering@fb.com>
+
+	grep -z: avoid erroneous match with regexp anchor and \n in text
+	* src/dfasearch.c (EGexecute): Clear the newline_anchor bit when
+	eolbyte is not '\n'.
+	* tests/z-anchor-newline: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	* NEWS (Bug fixes): Describe it.
+	Originally reported by Ulrich Mueller in
+	https://bugs.gentoo.org/show_bug.cgi?id=574662
+	Reported to us by Sergei Trofimovich as http://debbugs.gnu.org/22655
+
+	tests: convert "cmd && fail=1" to "returns_ 1 cmd || fail=1"
+	The latter is robust, while the former can silently ignore
+	failure due to signals.
+	* cfg.mk (sc_prohibit_and_fail_1): New rule, copied from coreutils.
+	* tests/long-pattern-perf: Perform the above substitution.
+	* tests/mb-non-UTF8-performance: Likewise.
+	* tests/help-version: Merge from coreutils.
+
+2016-02-09  Jim Meyering  <meyering@fb.com>
+
+	maint: add a check-very-expensive target
+	* Makefile.am (check-very-expensive): New convenience rule,
+	currently merely equivalent to check-expensive.
+
+2016-02-04  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.23
+	* NEWS: Record release date.
+
+2016-02-02  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+	Update for this "make distcheck"-fixing change:
+	> verify-tests: also remove stray test-verify.Tpo
+
+2016-02-01  Jim Meyering  <meyering@fb.com>
+
+	tests/null-byte: test another code path
+	* tests/null-byte: Also exercise the case in which there is
+	a match in the block along with the NUL byte.
+
+2016-01-31  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Omit excess "Binary file ... matches"
+	Problem reported in: http://bugs.gnu.org/22461
+	* src/grep.c (grep): Don't report "Binary file ... matches"
+	merely because the file contained both matches and binary data.
+	Insist that the binary data contained a match.
+	* tests/null-byte: Add a test for this.
+
+2016-01-28  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+
+2016-01-23  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+
+	maint: fix typo in NEWS: s/a/an/
+
+2016-01-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: -x now supersedes -w more consistently
+	* NEWS, doc/grep.texi (Matching Control): Mention this.
+	* src/dfasearch.c (EGexecute):
+	* src/pcresearch.c (Pcompile):
+	Don't get confused by -w if -x is also present.
+	* src/pcresearch.c (Pcompile): Remove misleading comment about
+	non-UTF-8 multibyte locales, as PCRE doesn't support them.
+	Calculate buffer sizes more carefully; the old method
+	allocated a buffer slightly too big, seemingly due to luck.
+	* tests/backref-word, tests/pcre: Add tests for this bug.
+
+	tests: omit update-copyright-tests
+	This test does not check how 'grep' itself operates, so it is
+	out of place for grep's 'make check'.  Problem reported by Sam Razavi in:
+	http://bugs.gnu.org/22376
+	* bootstrap.conf (avoided_gnulib_modules): Add update-copyright-tests.
+
+2016-01-11  Jim Meyering  <meyering@fb.com>
+
+	tests: do use "yes" but via an AWK replacement
+	Also, use sed Nq in place of head -N
+	* tests/init.cfg (yes): Define.
+	Thanks to Paul Eggert for this definition.
+	* tests/max-count-overread: Revert to using "yes".
+	* tests/mb-non-UTF8-performance: Likewise, and use
+	"sed Nq" in place of head -N.
+
+2016-01-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/pcre-count: Don't assume the page size is 32kB.
+
+2016-01-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: port to other POSIXish platforms
+	I tested this on Solaris 10 and AIX 7.1.
+	* tests/max-count-overread:
+	* tests/mb-non-UTF8-performance:
+	Don't assume 'yes' exists, as 'yes' is not in POSIX.
+	* tests/mb-non-UTF8-performance:
+	Don't rely on 'head -1000', as that option syntax is not POSIX.
+	* tests/pcre-count: Don't rely on "printf '\x0'".
+	* tests/unibyte-binary: Don't assume \200 is an encoding error
+	in every unibyte locale.
+
+2016-01-08  Jim Meyering  <meyering@fb.com>
+
+	tests: fix encoding-error test failure to use of printf '\xHH'
+	* tests/encoding-error: Don't rely on printf having support for \xHH
+	hexadecimal.  That is not portable.  Use \OOO octal, instead.
+
+	maint: fix typo in NEWS: s/a/an/
+
+2016-01-07  Jim Meyering  <meyering@fb.com>
+
+	mb-non-UTF8-performance: avoid FP test failure on fast hardware
+	* tests/mb-non-UTF8-performance: Don't use a fixed size.
+	Otherwise, on a fast system, the fixed-size unibyte test
+	would complete in a nominal 0 ms, which might well be
+	smaller than 1/30 of the multibyte duration, provoking
+	a false positive test failure.  Instead, increase the
+	size of the input until we obtain a unibyte duration of
+	at least 10ms.
+
+2016-01-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: mention unibyte encoding fix
+	* NEWS: Document recent fix for encoding errors in unibyte locales.
+
+	grep: improve unibyte -P performance
+	This is a followon to the recent changes prompted by Bug#20526.
+	In <http://bugs.gnu.org/bug=20526#86> Norihiro Tanaka pointed out
+	that grep mistakenly assumed that unibyte locales cannot have
+	encoding errors.  Here, the mistake hurt performance significantly.
+	On Fedora 23 x86-64 in the C locale, this patch improved grep's
+	performance by a factor of 7 when run as "grep -P 'z.*a'" on the
+	output of "yes $(printf '\200\n') | head -n 1000000000".
+	* src/pcresearch.c (multibyte_locale) [HAVE_LIBPCRE]: New static var.
+	(Pcompile): Set it.
+	(Pexecute): Use it to avoid the need to call
+	buf_has_encoding_errors in unibyte locales.
+
+2016-01-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Improve on fix for Bug#22181
+	* src/pcresearch.c (Pexecute): Update subject when skipping past
+	easily-determined encoding errors, as this is faster than letting
+	pcre_exec skip them.  On my platform this improves performance
+	4.7x on a benchmark created via "yes $(printf '\200\200\200\200
+	\200\200\200\200\200\200\200\200\200\200\200\200\200\200\200\200x\n')
+	| head -n 1000000 >j; grep -oP y j" in a UTF-8 locale.  Rework
+	code that deals with PCRE_ERROR_BADUTF8 return, to avoid an
+	incorrect (albeit currently harmless) 'bol = false' assignment.
+
+	grep: restore -P optimization (followup fix)
+	* src/search.h (EGexecute, Fexecute, Pexecute):
+	Change decls to match new implementations.
+	I forgot to add this file to the previous commit.
+
+	grep: restore -P PCRE_NO_UTF8_CHECK optimization
+	On my platform in the en_US.utf8 locale, this makes 'grep -P "z.*a" k'
+	220x faster, where k is created by the shell command:
+	yes 'abcdefg hijklmn opqrstu vwxyz' | head -n 10000000 >k
+	* src/dfasearch.c (EGexecute):
+	* src/grep.c (execute_fp_t):
+	* src/kwsearch.c (Fexecute):
+	* src/pcresearch.c (Pexecute):
+	First arg is now char *, not char const *, since Pexecute now
+	temporarily modifies this argument.
+	* src/grep.c, src/grep.h (buf_has_encoding_errors): Now extern.
+	* src/pcresearch.c (Pexecute): Use it.  If the input is free of
+	encoding errors, use a multiline search and the PCRE_NO_UTF8_CHECK
+	option, as this is typically way faster.  This restores an
+	optimization that was removed with the recent changes for binary
+	file detection.
+
+2016-01-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix calculation of unibyte_mask
+	* src/grep.c (initialize_unibyte_mask): The old method worked for
+	UTF-8 and other typical encodings, but did not work for weird
+	encodings, e.g., one where all bytes other than 0x7f and 0x80 are
+	unibyte characters.
+
+2016-01-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix bug with with invalid unibyte sequence
+	This was introduced by the recent binary-data-detection changes.
+	Problem reported by Norihiro Tanaka in: http://bugs.gnu.org/20526#86
+	* src/grep.c (HIBYTE, easy_encoding, init_easy_encoding): Remove,
+	replacing with ...
+	(uword_max, unibyte_mask, initialize_unibyte_mask): ... this new
+	constant, static var, and function.  All uses changed.  The
+	unibyte_mask var generalizes the old local var hibyte_mask, which
+	worked only for encodings where every byte with 0x80 turned off is
+	a single-byte character.
+	(buf_has_encoding_errors): Return false immediately if
+	unibyte_mask is zero, not whether the current encoding is unibyte.
+	The old test was incorrect in unibyte locales in which some bytes
+	were encoding errors.
+	* tests/pcre-z: Require UTF-8 locale, since the grep -z . test now
+	needs this.  Use printf \0 rather than tr.  Port the 'grep -z .'
+	test to platforms where the C locale says '\200' is an encoding
+	error.  Use cmp rather than compare, as the file is binary and
+	so non-GNU diff might not work.
+	* tests/unibyte-binary: New file.
+	* tests/Makefile.am (TESTS): Add it.
+
+2016-01-01  Jim Meyering  <meyering@fb.com>
+
+	maint: update copyright year, bootstrap, init.sh
+	Run "make update-copyright" and then...
+
+	* gnulib: Update to latest.
+	* tests/init.sh: Update from gnulib.
+	* bootstrap: Likewise.
+
+2015-12-31  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: clarify text vs binary match output
+	* NEWS:
+	* doc/grep.texi (File and Directory Selection):
+	Make it clearer that grep can now output matching text before
+	reporting a binary match.  Problem reported by Norihiro Tanaka in:
+	http://bugs.gnu.org/20526#83
+
+	doc: minor clarifications
+	* doc/grep.in.1, doc/grep.texi: Minor clarifications suggested by
+	Debian documentation patches.  Problem reported by Santiago Ruano
+	Rincón in: http://bugs.gnu.org/18651
+
+	grep: fix -l --line-buffer bug
+	Problem reported by Louis Sautier in: http://bugs.gnu.org/18750
+	* NEWS: Document this.
+	* src/grep.c (grep, grepdesc): If --line-buffered, flush
+	stdout after outputting newline (or null byte, if applicable).
+
+2015-12-30  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: remove duplicate init
+	* src/grep.c (print_line_middle): Remove duplicate initialization.
+
+	grep: report line-buffered write error right away
+	* src/grep.c (prline): When line buffered, if there is a write
+	error, report it immediately rather than waiting until the next
+	line of output.
+
+	grep: -c should keep counting after binary data
+	Problem and fix reported by Jaroslav Å karvada, and test case
+	reported by Norihiro Tanaka, in: http://bugs.gnu.org/22028
+	* NEWS: Document this.
+	* src/grep.c (grep): Don't stop counting merely because nulls seen.
+	* tests/pcre-count: New file.
+	* tests/Makefile.am (TESTS): Add it.
+
+	dfa: port to tinycc
+	* src/dfa.c (add_utf8_anychar): Put 'const' after type.
+	Problem reported by Aharon Robbins in:
+	http://bugs.gnu.org/22260
+
+	grep: be less picky about encoding errors
+	This fixes a longstanding problem introduced in grep 2.21,
+	which is overly picky about binary files.
+	* NEWS:
+	* doc/grep.texi (File and Directory Selection): Document this.
+	* src/grep.c (input_textbin, textbin_is_binary, buffer_textbin)
+	(file_textbin):
+	Remove.  All uses removed.
+	(encoding_error_output): New static var.
+	(buf_has_encoding_errors, buf_has_nulls, file_must_have_nulls):
+	New functions, which reuse bits
+	and pieces of the removed functions.
+	(lastout, print_line_head, print_line_middle, print_line_tail, prline)
+	(prpending, prtext, grepbuf):
+	Avoid use of const, now that we have
+	functions that require modifying a sentinel.
+	(print_line_head): New arg LEN.  All uses changed.
+	(print_line_head, print_line_tail):
+	Return indicator whether the output line was printed.
+	All uses changed.
+	(print_line_middle): Exit early on encoding error.
+	(grep): Use new method for determining whether file is binary.
+	* src/grep.h (enum textbin, TEXTBIN_BINARY, TEXTBIN_UNKNOWN)
+	(TEXTBIN_TEXT, input_textbin): Remove decls.  All uses removed.
+	* src/pcresearch.c (Pexecute): Remove multiline optimization,
+	since the main program no longer checks for encoding errors on input.
+	* tests/encoding-error: New file.
+	* tests/Makefile.am (TESTS): Add it.
+
+2015-12-29  Jim Meyering  <meyering@fb.com>
+
+	maint: correct (make sorted) order of test file names
+	* tests/Makefile.am (TESTS): Insert new test name in sorted order.
+
+2015-12-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: --exclude matches trailing parts of args
+	Problem reported by Vincent Lefevre in:
+	http://bugs.gnu.org/22144
+	* NEWS:
+	* doc/grep.texi (File and Directory Selection): Document this.
+	* src/grep.c (excluded_patterns, excluded_directory_patterns):
+	Now 2-element arrays, with one element for subfiles and another
+	for command-line args.  All uses changed.  This implements the change.
+	(exclude_options): New function.
+	* tests/include-exclude: Test the change.
+
+2015-12-18  Jim Meyering  <meyering@fb.com>
+
+	grep -oP: don't infloop when processing invalid UTF8 preceding a match
+	* src/pcresearch.c (Pexecute): When advancing SUBJECT past an
+	encoding error, don't blindly set P to that new value, since we
+	will soon compute SEARCH_OFFSET = P - SUBJECT, and mistakenly
+	making that difference too small would allow us to match some
+	previously-processed text, resulting in an infinite loop.
+	* NEWS (Bug fixes): Mention it.
+	* THANKS.in: Add Christian's name and email address.
+	* tests/pcre-invalid-utf8-infloop: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	Reported by Christian Boltz in http://debbugs.gnu.org/22181
+	Introduced by commit, v2.21-37-g14f8e48.
+
+2015-11-04  Jim Meyering  <meyering@fb.com>
+
+	tests: mark performance-related tests as expensive
+	These performance-related tests are slightly failure prone due to
+	varying system load during the two runs.
+	Marking these tests as "expensive" makes it so they are no longer run
+	via "make check". You can still run them via make "check-expensive".
+	This makes them less likely to be run by regular users.
+	* tests/long-pattern-perf: Use expensive_.
+	* tests/mb-non-UTF8-performance: Likewise.
+	Reported by Jaroslav Skarvada in http://debbugs.gnu.org/21826
+	and by Andreas Schwab in http://debbugs.gnu.org/21812.
+
+2015-11-01  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.22
+	* NEWS: Record release date.
+
+	tests: pcre-jitstack: upon failure, retry with no stack size limit
+	* tests/pcre-jitstack: Don't let an example that provokes inordinate
+	stack space use cause a test failure.  Thanks to reports from and
+	analysis by Bruce Dubbs; see http://debbugs.gnu.org/21755
+
+2015-10-27  Jim Meyering  <meyering@fb.com>
+
+	maint: update THANKS.in
+	* THANKS.in: Add name+email of those who found and reported
+	the bug that made grep -E '^x|x$' match any "x".
+
+2015-10-25  Zev Weiss  <zev@bewilderbeest.net>
+
+	dfa: plug a memory leak in dfamust
+	* src/dfa.c (dfamust): Ensure MP is freed, by refraining
+	from returning early when, at "done:" *RESULT is NULL.
+
+2015-10-25  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+	* gnulib: Pull in one more portability fix:
+	  stdalign: port to Sun C 5.9
+
+2015-10-24  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest, for portability fixes
+	* gnulib: Pull in changes like these:
+	  fts: port to C11 alignof
+	  stdalign: work around pre-4.9 GCC x86 bug
+
+	maint: NEWS: correct/amend
+	* NEWS: Move the long-regexp-performance-improvement from
+	"Bug fixes" to "Improvements."  Say more and include an example.
+	The -Fw degradation was introduced in commit v2.18-125-g94555dd
+
+	tests: avoid spurious failure on OpenBSD 5.8
+	* tests/fedora: Don't rely on "diff - FILE" reading from stdin.
+	Reported privately by Nelson Beebe.
+
+2015-10-17  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest; also bootstrap and tests/init.sh
+	* bootstrap: Update from gnulib.
+	* tests/init.sh: Likewise.
+	* gnulib: Update submodule to latest.
+
+	build: avoid spurious bootstrap failure involving pkg.m4
+	Running ./bootstrap could fail mistakenly at the very end in
+	its attempt to obtain a copy of pkg.m4.  It would search only
+	$(aclocal --print-ac-dir) and some other directories, but not
+	those listed in $(aclocal --print-ac-dir)/dirlist.
+	* bootstrap.conf (bootstrap_post_import_hook): Also search the
+	directories named in $(aclocal --print-ac-dir)/dirlist when that
+	file exists with nonzero size.
+
+2015-10-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: add news item
+	* NEWS: Document grep -Fw speedup.
+
+	grep: simplify previous change
+	* src/grep.c (main): Simplify recently-changed grep -Fw test.
+
+2015-10-16  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: use grep matcher for grep -Fw when unibyte
+	In single byte locales with grep -Fw, prefer the grep matcher to the
+	kwset matcher, as the former uses KWset and a DFA, whereas the latter
+	calls kwsexec many times until it matches a word.
+	* src/grep.c (main): Change pattern for fgrep into grep for grep -Fw in
+	single byte locales.
+
+2015-10-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: use memchr/memrchar
+	* src/kwsearch.c (Fexecute): Prefer memchr and memrchr to doing it
+	by hand.
+
+2015-10-16  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: improve performance of grep -Fw
+	* src/kwsearch.c (Fexecute): grep -Fw examined whether the previous
+	character is a word character after matching from the head of the
+	buffer.  It is extremely slow.  Now, if grep found a potential match,
+	it looks for the previous newline, and examines from there.
+
+2015-10-13  Jim Meyering  <meyering@fb.com>
+
+	maint: use single quote rather than UTF-8 multi-byte version
+	* tests/backref-alt: Translate unnecessary non-ASCII in comment.
+
+2015-10-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: make the executable a bit smaller
+	* src/dfa.c (dfamust): Hoist MB_CUR_MAX calculation out of loops.
+
+2015-10-13  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: fix bug in alternate of sub-patterns that differ only in constraints
+	Fix a bug where a line incorrectly matches alternates of sub-patterns
+	that differ only in the constraints, e.g., the ERE '^a|a$'.
+	Reported by Greg Boyd in: http://debbugs.gnu.org/21670
+	* src/dfa.c (dfamust): For a pattern with constraints, check that it is
+	matched including the constraints, to judge whether it is exact.
+
+	dfa: fix off-by-one error
+	* src/dfa.c (dfamust): Fix off-by-one error in computing 'must' length,
+	which caused the 'must' to be too short.  See:
+	http://bugs.gnu.org/21670#28
+
+2015-10-12  Jim Meyering  <meyering@fb.com>
+
+	doc: NEWS: mention a bug fix
+	* NEWS (Bug fixes): Describe it.
+	This bug was introduced by commit v2.18-85-g2c94326
+	and fixed by commit v2.21-51-g256a4b4.
+
+2015-10-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: add test case for Bug#21670
+	* tests/options: Add test #4 to catch Bug#21670.
+	Also, do not overescape # in shell strings.
+
+2015-09-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Add test for pop_fail_stack bug
+	Problem reported by Hanno Böck in: http://bugs.gnu.org/21513
+	If you use --with-included-regex the bug fix is in gnulib, here:
+	http://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=5513b40999149090987a0341c018d05d3eea1272
+	If you use glibc, the bug fix has not been installed yet.
+	* tests/Makefile.am (XFAIL_TESTS): Add backref-alt if system matcher.
+	(TESTS): Add backref-alt.
+	* tests/backref-alt: New file.
+	* tests/triple-backref: Remove unused var.
+	Don't skip if tested with glibc, as Makefile.am now handles this.
+
+	build: update gnulib submodule to latest
+
+2015-08-19  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: avoid use of uninitialized variable
+	EGexecute would use "backref" uninitialized.
+	While that could have no bearing on correctness, it could
+	impact performance, via an unnecessary use of regexp.
+	* src/dfasearch.c (EGexecute): Initialize backref.
+	Reported as http://debbugs.gnu.org/21273
+	Introduced by commit v2.21-55-gea0ebaa.
+
+2015-08-12  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: remove fgrep code for case insensitive match
+	The fgrep matcher is no longer called in case insensitive matching,
+	so remove the code to support it.
+	* src/kwsearch.c (mb_case_map_apply): Remove function.
+	(Fexecute): Remove now-unused code.
+
+2015-08-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: optimize [x-x]
+	* src/dfa.c (parse_bracket_exp): Treat [x-x] as if it were [x].
+	This also pacifies GCC, which otherwise complains about wc2
+	being set but not used.
+
+2015-08-12  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: remove unused multibyte support
+	Now regex should be used for range, collating element, equivalent class
+	in non POSIX locales.  So remove code to support these features.
+	* dfa.c (struct mb_char_classes): Remove members ch_classes,
+	nch_classes, ranges, nranges, equivs, nequivs, coll_elems, ncoll_elems.
+	All uses removed.
+	(match_mb_charset): Remove function.
+
+2015-08-01  Jim Meyering  <meyering@fb.com>
+
+	tests: mb-non-UTF8-performance: use new function
+	* tests/mb-non-UTF8-performance: Rewrite to use
+	the user-time measuring function in init.cfg.
+
+	tests: long-pattern-perf: measure user time, not elapsed
+	Measuring user time makes this test less prone to false
+	positive failure, and also lets us use a tighter bound.
+	* tests/long-pattern-perf: Measure elapsed user time rather than
+	wall-clock time, to permit a tighter bound on the ratio of
+	N-to-10N timings.  Suggested by Giuseppe Ottaviano.
+	Also, use regexps built from mostly 5-digit numbers, so that the 10:1
+	ratio applies to lines of "seq" output as well as to total bytes.
+
+	tests: new function to measure elapsed user time
+	* tests/init.cfg (user_time_): New function.
+
+2015-07-25  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: remove word delimiter support for multibyte locales
+	DFA supports word delimiter expressions, but it does not behave
+	correctly for multibyte locales.  Even if it were to be fixed,
+	the DFA matcher's performance would be no better than that of regex.
+	Thus, this change removes DFA support for word delimiter expressions
+	in multibyte locales.
+
+	* src/dfa.c (dfa_supported): Return false also when a pattern uses any
+	word delimiter expression in a multibyte locale.
+
+2015-07-25  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: avoid execution for a pattern including an unsupported expression
+	If a pattern includes a construct unsupported by the DFA matcher,
+	the DFA search would fail in most cases.  Make dfaexec immediately
+	return for any such pattern.
+
+	* src/dfa.c (struct dfa_state) [has_backref, has_mbcset]: Remove members
+	and all uses.
+	(dfaexec_main): Remove 'backref' parameter.  Update callers.
+	(dfaexec_noop): New function.
+	(dfa_supported): New function.
+	(dfassbuild): Remove now-unused code.
+	(dfacomp): When a pattern uses a DFA-unsupported construct, do not
+	waste time performing any further analysis.
+
+2015-07-19  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: DEBUG: print detail of DFA states
+	When compiled with -DDEBUG, grep outputs tokens etc.
+	With this change, also print DFA states and transitions.
+	This change is very useful when debugging those.
+
+	* src/dfa.c (prtok) [DEBUG]: Change `%c' to `%02x' in printf format.
+	(state_index) [DEBUG]: Print detail of new state.
+	(dfastate) [DEBUG]: Print detail of DFA states.
+	Reported as http://debbugs.gnu.org/18707
+
+2015-07-18  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	tests: sjis-mb: accept two more locales
+	* tests/sjis-mb: Accept the ja_JP.SJIS and ja_JP.PCK locales
+	as well as ja_JP.SHIFT_JIS, so this test is less likely to
+	be skipped unnecessarily.  Reported as http://bugs.gnu.org/18983
+
+2015-07-18  Jim Meyering  <meyering@fb.com>
+
+	tests: add a test for the performance fix
+	* tests/long-pattern-perf: New file.
+	* tests/Makefile.am (TESTS): Add it.
+
+2015-07-18  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: speed up handling of long pattern
+	DFA tries to find a long sequence of characters that must appear
+	in any matching line.  However, when a pattern is long (length N),
+	it is very slow, because it makes O(N^2) strstr calls.
+	This change reduces that to O(N) by processing each sequence of
+	adjacent "regular" characters as a group.
+
+	Compare the run times of this command before and after this change:
+	(on a i7-4770S CPU @ 3.10GHz using rawhide (~fedora 22) and compiled
+	with gcc 6.0.0 20150627)
+	  : | env time -f %e grep -f <(seq -s '' 9999)
+	  Before: 0.85
+	   After: 0.02
+
+	* src/dfa.c (dfamust): Process each string of concatenated normal
+	characters as a unit.
+	* NEWS (Improvement): Mention it.
+	Prompted by a bug report and patch by Ivan Yanikov
+	in http://bugs.gnu.org/15191#5
+
+2015-07-17  Jim Meyering  <meyering@fb.com>
+
+	tests: fix mis-applied patch.
+	* tests/include-exclude: I applied "|sort" to the wrong creation
+	of "out", and didn't push the same patch that I'd tested.
+
+	tests: avoid FS-dependent false-positive failure
+	* tests/include-exclude: Sort file name list, so that this test
+	is not sensitive to the order in which those names are returned
+	via readdir. I noticed the failure on a Fedora 21 system using ext4.
+	Also fix a typo: s/framework_failure+/framework_failure_/
+
+2015-07-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix bug with --exclude-dir and command line
+	Reported by Aron Griffis in: http://bugs.gnu.org/21027
+	* NEWS: Document this.
+	* src/grep.c (grepdirent): Don't check whether the file is skipped
+	when on the command line, as that's the caller's responsibility.
+	(main): Anchor the exclude patterns.
+	* tests/include-exclude: Adjust test case to match fixed behavior.
+	Add some more test cases.
+
+	tests: fix $? typo in null-byte
+	* tests/null-byte: Don't assume $? survives an invocation of 'test'.
+
+2015-07-05  Jim Meyering  <meyering@fb.com>
+
+	maint: dfa: used unsigned types where appropriate
+	* src/dfa.c (case_folded_counterparts): Return unsigned int, not int.
+	Change type of two locals to unsigned int, to reflect that their
+	values are never negative.
+	(parse_bracket_exp): Adjust type of result at each use, as well
+	as that of related index variables.
+
+2015-07-04  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: build struct dfamust on demand
+	If we won't use KWset, do not build a "struct dfamust".
+	Now it is built only when needed.
+	* src/dfa.c (struct dfa) [musts]: Remove member.
+	(dfacomp): Don't build dfamust here.
+	(dfamustfree): New function to free a struct dfamust.
+	(dfamust): Make it a global function, and make it return a pointer
+	to a malloc'd struct dfamust.
+	(dfamusts): Remove it.
+	* src/dfa.h (struct dfamust) [next]: Remove member.
+	In the implementation preceding this patch, there was
+	never more than one of these in a given "struct dfa".
+	(dfamustfree, dfamust): Add prototypes.
+	(dfamusts): Remove prototype.
+	(dfaalloc): Declare with _GL_ATTRIBUTE_MALLOC.
+	To make that symbol usable there, move the inclusion
+	of "xalloc.h" from dfa.c to this file, dfa.h.
+	* src/dfasearch.c (kwsmusts): Adapt to use the new interface.
+	Update the comments to reflect reality.
+	This addresses http://bugs.gnu.org/17715
+
+2015-07-04  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: use recent gnulib syntax bits
+	* src/grep.c (Gcompile, Ecompile): Use plain RE_SYNTAX_GREP
+	and RE_SYNTAX_EGREP, now that we assume a recent-enough gnulib.
+
+	maint: ignore gendocs_template_min
+	* doc/.gitignore: Add '/gendocs_template_min'.
+
+	build: update gnulib submodule to latest
+
+	dfa: '.' and '[^x]' now consistently match newline
+	* src/dfa.c (parse_bracket_exp, lex, add_utf8_anychar)
+	(match_anychar): RE_DOT_NEWLINE and RE_HAT_LISTS_NOT_NEWLINE
+	are about LF, not about eolbyte.  This patch does not affect
+	'grep', but may affect other users of dfa.c.
+
+	grep: -z '[^x]' now consistently matches newline
+	Problem reported by Norihiro Tanaka in: http://bugs.gnu.org/20974#19
+	* NEWS: Document this.
+	* src/grep.c (Gcompile, Ecompile): Clear RE_HAT_LISTS_NOT_NEWLINE.
+	* tests/utf8-bracket: Test this.
+
+2015-07-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: -z '.' now consistently matches newline
+	Problem reported by Balazs Kezes in: http://bugs.gnu.org/20974
+	* NEWS: Document this.
+	* tests/utf8-bracket: New file, to test for this bug.
+	* src/grep.c (Gcompile, Ecompile): Also specify RE_DOT_NEWLINE.
+	* tests/Makefile.am (TESTS): Add it.
+
+	grep: simplify print_line_middle slightly
+	* src/grep.c (print_line_middle): Simplify.
+
+	grep: don't mishandle left context in -P
+	http://bugs.gnu.org/20957
+	* src/pcresearch.c (jit_exec): New arg SEARCH_OFFSET.
+	Caller changed.
+	(Pexecute): Pass the left context to pcre_exec, so that PCRE
+	regular-expression matching can see it.
+	* tests/pcre-context: New file, to test for this bug.
+	* tests/Makefile.am (TESTS): Add it.
+
+2015-06-28  Jim Meyering  <meyering@fb.com>
+
+	tests/case-fold-backref: factor test
+
+2015-06-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: don't hang on command-line fifo if -D skip
+	* NEWS: Document this.
+	* src/grep.c (skip_devices):
+	New function, with code taken from grepdirent.
+	(grepdirent): Use it.  Avoid an unnecessary initialization.
+	(grepfile): If skipping devices, open files with O_NONBLOCK.
+	Throw in O_NOCTTY while we're at it.
+	(grepdesc): Skip devices here, too.  Not only does this fix the
+	bug, it fixes an unlikely race condition if some other process
+	renames a device between fstatat and openat.
+	* tests/skip-device: Add a test for this bug.
+
+	grep: minor tweaks
+	* src/grep.c (main): Change recently-added static vars to be
+	constants, which makes them sharable.  Prefer 'return' to 'exit'
+	when returning/exiting from 'main'.  Move decl closer to first use
+	and rename local from 'ok' (which was confusing) to 'status'.
+	Prefer named constant STDOUT_FILENO to unnamed constant 1.
+
+2015-06-26  Jim Meyering  <meyering@fb.com>
+
+	maint: unify three argv-processing calls
+	* src/grep.c (main): Unify three calls to grep_commandline_arg.
+
+	maint: alphabetize anonymous enum member names
+
+2015-05-30  Paul Eggert  <eggert@cs.ucla.edu>
+
+	test: tighten tests for bracket exprs
+	* tests/posix-bracket: Test '[a-a[.-.]--]'.
+	Also, test that failures are with status 1
+	(nonmatching data), not status 2 (invalid expressions).
+
+2015-04-26  Jim Meyering  <meyering@fb.com>
+
+	maint: update bootstrap from gnulib
+	* bootstrap: Update from gnulib.
+
+	maint: reword a diagnostic not to trigger leading capital check
+	* src/pcresearch.c: Reword diagnostic to avoid "make syntax-check"
+	failure.
+
+	maint: sort test names in tests/Makefile.am and add syntax-check rule
+	* cfg.mk (sc_sorted_tests): New rule.
+	* tests/Makefile.am (TESTS): Alphabetize.
+
+2015-04-25  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: make find_pred return NULL for an invalid predicate
+	This could never happen when invoked via grep, but could have triggered
+	a bug if dfa.c's find_pred function were invoked by some other program.
+	* src/dfa.c (find_pred): Return NULL for an invalid predicate.
+	* tests/invalid-char-class: New file to test for this.
+	* tests/Makefile.am (TESTS): Add that new file name to the list.
+	This addresses http://debbugs.gnu.org/18631
+
+2015-04-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: improve pkg-config doc and error handling
+	Error-handling improvement suggested by Mike Frysinger in:
+	http://bugs.gnu.org/16757#29
+	* NEWS: Document pkg-config changes.
+	* README-prereq: pkg-config is now a prereq when building from
+	repository.
+	* m4/pcre.m4 (gl_FUNC_PCRE): Report an error if pcre is explicitly
+	requested but not available.  Defer to user-supplied PCRE_CFLAGS
+	and PCRE_LIBS.
+
+	build: remove typo and don't bother with /usr/include/pcre
+	Problem reported by Holger Bruenjes.
+	* m4/pcre.m4: Remove test for /usr/include/libpng (a typo).
+	Come to think of it, don't bother worrying about
+	/usr/include/pcre, as hosts with that problem can use pkg-config
+	or configure with CFLAGS by hand.
+
+	build: use pkg-config (if available) to configure libpcre
+	Problem reported by Mike Frysinger in: http://bugs.gnu.org/16757
+	* bootstrap.conf (bootstrap_post_import_hook):
+	Copy pkg-config's pkg.m4.
+	* configure.ac: Invoke PKG_PROG_PKG_CONFIG.
+	* m4/pcre.m4 (gl_FUNC_PCRE): Rewrite to use pkg-config if
+	available, and to test that pcre_compile can be linked to.
+	* src/Makefile.am (AM_CFLAGS): Add PCRE_CFLAGS.
+	(grep_LDADD): Add PCRE_LIBS.
+	* src/pcresearch.c: Simply include <pcre.h> if HAVE_LIBPCRE,
+	since 'configure' arranges for the appropriate -I option now.
+
+2015-03-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: output "." file name in diagnostic
+	This is bug C as reported by David Grayson in:
+	http://bugs.gnu.org/16444#18
+	This bug occurs only in obscure circumstances, and I didn't see
+	how to write a reasonable test case for it.
+	* src/grep.c (filename_prefix_len): Remove, replacing with ...
+	(omit_dot_slash): New static var.  All uses of the former replaced
+	with uses of the latter.
+	(grepdirent): Don't add 2 if the filename is just ".".
+
+	egrep, fgrep: just use what's in PATH
+	* src/egrep.sh: Don't monkey with PATH; just use whatever 'grep'
+	is in the path.  This is simpler, and lets the user specify
+	default options with a script for only grep, with no need for
+	egrep and fgrep scripts.
+	Fixes: bug#19998
+
+	doc: give a script wrapper example
+	* doc/grep.texi (Environment Variables): Give an example of a
+	wrapper script, as an alternative to using GREP_OPTIONS.
+	Fixes: bug#19998
+
+	doc: clarify how -a matches
+	* doc/grep.in.1, doc/grep.texi (File and Directory Selection):
+	Give an example of how non-text bytes affect pattern matching in
+	binary files.
+	Fixes: bug#20080
+
+2015-02-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Cover the non-INSTALL case
+	* README: Mention what to do if there is no INSTALL file.
+	Fixes: bug#19928
+
+2015-02-11  Jim Meyering  <meyering@fb.com>
+
+	maint: use ASAN-poisoning more carefully
+	The ASAN-poisoning instituted by commit v2.21-14-g1555185 was
+	incomplete, since the poisoned tail of the read buffer could well
+	be the target of a legitimate follow-on read.  To accommodate that,
+	we must unpoison each such region just before beginning fillbuf's
+	read loop.
+	* src/grep.c [HAVE_ASAN] (asan_poison): Define.
+	(clear_asan_poison): Define.
+	(fillbuf): Clear before reading, since we are likely to read
+	into memory that was poisoned on the preceding iteration.
+	* tests/two-files: New file, to test for this.
+	* tests/Makefile.am (TESTS): Add it.
+
+2015-02-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Grow the JIT stack if it becomes exhausted
+	Problem reported by Oliver Freyermuth in: http://bugs.gnu.org/19833
+	* NEWS: Document the fix.
+	* tests/Makefile.am (TESTS): Add pcre-jitstack.
+	* tests/pcre-jitstack: New file.
+	* src/pcresearch.c (NSUB): Move decl earlier, since it's needed
+	earlier now.
+	(jit_stack_size) [PCRE_STUDY_JIT_COMPILE]: New static var.
+	(jit_exec): New function.
+	(Pcompile): Initialize jit_stack_size.
+	(Pexecute): Use new jit_exec function.  Report a useful diagnostic
+	if the error is PCRE_ERROR_JIT_STACKLIMIT.
+
+2015-02-01  Jim Meyering  <meyering@fb.com>
+
+	maint: reference CVE-2015-1345 from NEWS
+	* NEWS: Mention the CVE that was addressed by v2.21-13-g83a95bd,
+	"grep -F: fix a heap buffer (read) overrun".
+
+2015-01-18  Jim Meyering  <meyering@fb.com>
+
+	maint: convert "goto" to "continue" and remove now-spurious label
+	* src/kwset.c (bmexec_trans): Using "goto big_advance" here is
+	equivalent to using "continue".  Make that change and remove
+	the now-unused label.
+
+2015-01-10  Jim Meyering  <meyering@fb.com>
+
+	tests: add support for ASAN memory poisoning
+	This lets us reliably detect with ASAN some UMR bugs
+	that would otherwise be detectable only some of the time
+	with MSAN.  Use __asan_poison_memory_region to mark the unused
+	portion of a read buffer as inaccessible.  Then, with ASAN,
+	any attempt to access those bytes results in an ASAN abort.
+	* src/system.h: Include "ignore-value.h".
+	(__has_feature): Define.
+	(HAVE_ASAN): Define when address sanitizer is enabled.
+	[HAVE_ASAN]: Declare these two __asan_* symbols.
+	[!HAVE_ASAN] (__asan_poison_memory_region): Define stub.
+	[!HAVE_ASAN] (__asan_unpoison_memory_region): Likewise.
+	* src/grep.c: Use __asan_poison_memory_region.
+
+2015-01-09  Yuliy Pisetsky  <ypisetsky@fb.com>
+
+	grep -F: fix a heap buffer (read) overrun
+	grep's read buffer is often filled to its full size, except when
+	reading the final buffer of a file.  In that case, the number of
+	bytes read may be far less than the size of the buffer.  However, for
+	certain unusual pattern/text combinations, grep -F would mistakenly
+	examine bytes in that uninitialized region of memory when searching
+	for a match.  With carefully chosen inputs, one can cause grep -F to
+	read beyond the end of that buffer altogether.  This problem arose via
+	commit v2.18-90-g73893ff with the introduction of a more efficient
+	heuristic using what is now the memchr_kwset function. The use of
+	that function in bmexec_trans could leave TP much larger than EP,
+	and the subsequent call to bm_delta2_search would mistakenly access
+	beyond end of the main input read buffer.
+
+	* src/kwset.c (bmexec_trans): When TP reaches or exceeds EP,
+	do not call bm_delta2_search.
+	* tests/kwset-abuse: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	* THANKS.in: Update.
+	* NEWS (Bug fixes): Mention it.
+
+	Prior to this patch, this command would trigger a UMR:
+
+	  printf %0360db 0 | valgrind src/grep -F $(printf %019dXb 0)
+
+	  Use of uninitialised value of size 8
+	     at 0x4142BE: bmexec_trans (kwset.c:657)
+	     by 0x4143CA: bmexec (kwset.c:678)
+	     by 0x414973: kwsexec (kwset.c:848)
+	     by 0x414DC4: Fexecute (kwsearch.c:128)
+	     by 0x404E2E: grepbuf (grep.c:1238)
+	     by 0x4054BF: grep (grep.c:1417)
+	     by 0x405CEB: grepdesc (grep.c:1645)
+	     by 0x405EC1: grep_command_line_arg (grep.c:1692)
+	     by 0x4077D4: main (grep.c:2570)
+
+	See the accompanying test for how to trigger the heap buffer overrun.
+
+	Thanks to Nima Aghdaii for testing and finding numerous
+	ways to break early iterations of this patch.
+
+2015-01-08  Jim Meyering  <meyering@fb.com>
+
+	grep: avoid false-positive UMR
+	For some inputs, valgrind would report an uninitialized
+	memory read error, but it was harmless.
+	* src/grep.c (fillbuf): Initialize those trailing bytes.
+
+2015-01-01  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+
+	maint: update copyright year ranges to include 2015
+	Run "make update-copyright".  Also, ...
+	* grep.texi: Update manually, converting each "--" to "-".
+
+2014-12-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: document binary-data heuristic better
+	Problem reported by Martin Hoch in: http://bugs.gnu.org/19388
+	* doc/grep.texi (File and Directory Selection):
+	Document what non-text bytes are.
+	(Usage): Fix cross reference.
+
+2014-12-12  Jim Meyering  <meyering@fb.com>
+
+	maint: fix a new "make syntax-check" failure
+	* tests/dfa-match-aux.c: s/can not/cannot/
+
+2014-12-12  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	build: avoid build failure with --enable-gcc-warnings and no PCRE
+	* src/pcresearch.c [HAVE_LIBPCRE] (empty_match): Guard the declaration
+	of this PCRE-only variable.
+
+2014-12-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: port fmbtest to CentOS 6 and earlier
+	* tests/fmbtest: Port to platforms where the 'sed' pattern
+	'[^0-9]' does not match every non-digit character.  Problem
+	reported by Norihiro Tanaka in: http://bugs.gnu.org/19293
+
+2014-12-06  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: simplify dfaexec
+	* src/dfa.c (dfaexec): Simplify by rearrangement of IF conditions.
+	This commit induces no semantic change, and reverts part of commit
+	v2.5.4-144-gbafa134.
+
+2014-12-06  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: avoid invalid match or infinite loop in unused matching mode
+	Neither grep nor gawk uses this DFA code in its matching mode,
+	since each always calls dfacomp with a nonzero final argument.
+	However, when used in that mode, it had bug:
+	After failing to match in matching mode, it should return NULL,
+	but instead would either report a false match or enter an
+	infinite loop.
+
+	* src/dfa.c (dfaexec_main): After failing to match in matching mode
+	return NULL, rather than transitioning to the next state.
+	* tests/dfa-match: Add a new test.
+	* tests/dfa-match-aux.c: Add a new program to exercise this
+	otherwise-unused part of dfa.c.
+	* tests/Makefile.am: Add a rule to build new test.
+	(check_PROGRAMS): Add dfa-match-aux.
+	(AM_CPPFLAGS): Add -I$(top_srcdir)/src.
+	(TESTS): Add dfa-match.
+	* cfg.mk (exclude_file_name_regexp--sc_bindtextdomain):
+	(exclude_file_name_regexp--sc_prohibit_atoi_atof):
+	Exempt the new test file from some syntax-check rules.
+
+2014-12-04  Santiago Ruano Rincón  <santiago@debian.org>
+
+	doc: document grep-2.11 change in behavior of -r, --recursive
+	* doc/grep.texi (--recursive, -r): Mention the new behavior
+	of recursively searching "." when there is no FILE argument.
+	* doc/grep.in.1: Likewise.
+	That change first appeared in grep-2.11, released on 2012-03-02.
+
+2014-11-24  Jim Meyering  <meyering@fb.com>
+
+	maint: correct for four Author: name misspellings
+	* .mailmap: Correct for misspelling in Norihiro Tanaka's last name
+	as listed in four commit Author: fields: s/Norihirio/Norihiro/
+
+2014-11-23  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.21
+	* NEWS: Record release date.
+
+2014-11-21  Jim Meyering  <meyering@fb.com>
+
+	tests: sjis-mb: remove now-obsolete and failing sub-tests
+	* tests/sjis-mb: Commit v2.18-123-geb3292b changed how grep
+	handles patterns with encoding errors.  These SJIS tests are
+	skipped so often that we didn't notice until now that there were
+	two tests of that changed behavior, and that on any system with
+	the ja_JP.SHIFT_JIS locale, they would always fail.  Remove those
+	two tests, since this functionality is well tested separately,
+	via tests/prefix-of-multibyte.
+
+2014-11-20  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep -F could erroneously fail to match in non-UTF8 multibyte locales
+	This fixes a bug that can strike only when using a non-UTF8 multibyte
+	locale like ja_JP.SHIFT_JIS.
+
+	Consider this example: it would mistakenly fail to match before
+	this patch:
+
+	  printf '\203AA\n'|LC_ALL=ja_JP.SHIFT_JIS src/grep -F A
+
+	When searching for a single byte that happens to be the latter
+	byte of a multibyte character, and the target byte also follows
+	that multibyte character, grep -F would advance an internal pointer
+	by one byte too many, thus missing the target byte.  A test case
+	for this bug is already included in tests/sjis-mb.
+
+	* src/kwsearch.c (Fexecute): Skip one byte less, after matched middle of a
+	multi-byte character.  Introduced by commit v2.18-119-gfb7d538.
+
+2014-11-17  Jim Meyering  <meyering@fb.com>
+
+	tests: big-match: disable OOM-provoking subtest
+	* tests/big-match: Our application of this regexp '^.*x\(\)\1'
+	to a file containing a single matching line of length 2GiB+2
+	would cause inordinate memory consumption (over 100GB) via
+	regexec.c, but no leak.  That would cause disruption on most
+	systems, so remove this subtest.  Reported by Assaf Gordon.
+
+2014-11-16  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: avoid undefined behavior
+	* src/dfa.c (dfassbuild): Don't call memcpy with a second
+	argument of NULL, even when the size (3rd argument) is 0.
+
+2014-11-14  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+
+2014-11-14  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep -F -x -o PAT would print an extra newline for each match
+	* src/kwsearch.c (Fexecute): Correctly compute the length of a match
+	by subtracting 2 (not 1) when match_lines is set.  With -x, we augment
+	the "line" by both prepending and appending an EOLBYTE to the search
+	pattern.  Here, we must correct for that.  However, to compensate,
+	when we are using -x (--line-regexp) and start_ptr is NULL, we have
+	to add 1 to the length so that we still print the trailing EOLBYTE.
+	Introduced by commit v2.18-85-g2c94326.
+	* tests/match-lines: Add a new test.
+	* tests/Makefile.am (TESTS): Add it.
+	* NEWS (Bug fixes): Mention it.
+
+2014-11-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: port to Darwin
+	The 'sed' command 's/.//' does not delete all bytes in the C locale.
+	Problem reported by Nelson H. F. Beebe.
+	* tests/fmbtest: Don't assume that sed treats bytes with the
+	top bit set as valid characters in the C locale, as this is not
+	true for Darwin.  Use the cs_CZ.UTF-8 locale instead, and
+	simplify the sed script.
+
+	tests: fix recently-introduced stray output
+	* tests/init.cfg (require_pcre_): Remove stray debugging output.
+
+	build: port to GCC 4.6.4 + glibc 2.5
+	On platforms this old, building with _FORTIFY_SOURCE equal to 2
+	results in duplicate definitions of standard library functions.
+	Problem reported by Nelson H. F. Beebe.
+	* configure.ac (_FORTIFY_SOURCE): Sort after GNULIB_PORTCHECK.
+	By default, do not enable this unless GNULIB_PORTCHECK is defined.
+	This better matches the original intent, which as I recall was to
+	enable these extra checks only with --enable-gcc-warnings.
+
+	tests: port to libpcre sans UTF-8 support
+	Problem reported by Nelson H. F. Beebe.
+	* tests/pcre-infloop, tests/pcre-invalid-utf8-input, tests/pcre-utf8:
+	Skip the test unless PCRE works in an en_US.UTF-8 locale.
+
+2014-11-09  Jim Meyering  <meyering@fb.com>
+
+	tests: do not fail when the zh_CN.UTF-8 locale is not installed
+	* tests/word-multibyte: This test would fail on a system with
+	no zh_CN.UTF-8 locale. Use it only if it is installed.
+
+	tests: avoid hex_printf_ portability problems
+	* tests/init.cfg (hex_printf_): Spell out a-f and A-F, for
+	non-C locales, ensure that the input to sed is newline-terminated,
+	and quote the final octal format string.
+	Suggestions from Paul Eggert.
+
+2014-11-08  Jim Meyering  <meyering@fb.com>
+
+	tests: avoid a multibyte tr portability problem
+	* tests/init.cfg (tr): New wrapper function.
+	See comments for details.  Reported by Norihiro Tanaka
+	in http://debbugs.gnu.org/18991
+
+	maint: remove spurious LC_ALL setting from one test
+	* tests/word-multibyte: Remove unnecessary setting of LC_ALL.
+
+	tests: fix typo in previous change
+	* tests/init.cfg (hex_printf_): Fix typo s/A-f/A-F/.
+	For the record, I introduced that error, not Norihiro.
+
+2014-11-08  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	tests: avoid awk+printf+\xHH portability trap
+	* tests/init.cfg (hex_printf_): Rewrite in terms of printf and sed.
+	Using awk's printf with \xHH in the format string was not portable
+	to the awk of Solaris 10, AIX 7 or HP-UX 11.23, as reported in
+	http://debbugs.gnu.org/18987.
+	* tests/word-multibyte: Use printf rather than hex_printf_,
+	and give the character we're printing a name: e_acute (rather
+	than A-grave), since that is used in other tests.
+	a trailing \n in the format string, adjust by removing it, and
+	instead invoking echo.
+	* tests/multibyte-white-space: Simply remove each trailing \n.
+	They were not needed.
+
+2014-11-07  Jim Meyering  <meyering@fb.com>
+
+	tests: avoid printf+\xHH portability trap
+	* tests/word-multibyte: Using the bourne shell's printf function
+	with strings like "\xHH\xHH" happens to work for most interactive
+	shells, but not for dash.  That is not portable.  Use our hex_printf_
+	awk wrapper instead. Without this change, this test would fail on
+	a Debian system for which /bin/sh is configured to be "dash".
+
+	maint: move helper function, hex_printf to init.cfg
+	* tests/init.cfg (hex_printf_): New function, from ...
+	* tests/multibyte-white-space: ... here.  Reflect the
+	s/hex_print/hex_printf_/ renaming.
+
+2014-11-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: port O_NOFOLLOW errno checking to NetBSD
+	Problem reported by Assaf Gordon in: http://bugs.gnu.org/18892
+	* NEWS: Document it.
+	* src/grep.c (open_symlink_nofollow_error):
+	New function, which does the right thing on NetBSD.
+	(grepfile): Use it.
+
+2014-10-31  Jim Meyering  <meyering@fb.com>
+
+	build: generate man pages even when existing targets are read-only
+	* doc/Makefile.am (grep.1): Use mv -f to move temporary to target,
+	in case the target is read-only.  Also, always make the generated
+	files read-only.
+	(egrep.1 fgrep.1): Likewise.
+	This avoids a build failure reported by Eric Blake in
+	http://lists.gnu.org/archive/html/bug-grep/2014-10/msg00112.html
+
+2014-10-30  Jim Meyering  <meyering@fb.com>
+
+	tests: avoid false-positive failure due to some zh_CN.* locales
+	On some systems, and for some zh_CN.* locales (e.g., OpenBSD5.5) the
+	E-acute pair of bytes do not qualify as a word-constituent character.
+	* tests/word-multibyte: Use zh_CN.UTF-8, rather than "zh_CN".
+	Reported by Assaf Gordon and Bruce Dubbs in
+	http://debbugs.gnu.org/18892
+
+2014-10-29  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest; bootstrap, too
+	* gnulib: Update to latest.
+	* bootstrap: Copy latest from gnulib.
+
+2014-10-28  Jim Meyering  <meyering@fb.com>
+
+	tests: make new test script executable
+	* tests/word-multibyte: Make this file executable.
+
+2014-10-28  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: make \w and \W work in multibyte locales
+	Reported by Jaroslav Skarvada in: http://bugs.gnu.org/18817
+	Now, \w and \W are supported in not only single byte locale but multibyte
+	locale.
+
+	* src/dfa.c (PUSH_LEX_STATE, POP_LEX_STATE): Move definitions "up",
+	so they are not within the function.
+	(lex): Make \w and \W work in a multibyte locale, the same way
+	we made \s and \S work.
+	* tests/word-multibyte: New test for this change.
+	* tests/Makefile.am: Add a rule to build new test.
+	* NEWS (Bug fixes): Mention it.
+
+2014-10-26  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: avoid false match in a non-UTF8 multibyte locale
+	This command should print nothing:
+
+	  printf '\263\244\263\244\n' \
+	    | LC_ALL=ja_JP.eucJP grep -E "$(printf '^x|\244\263')"
+
+	Before this patch, it would print its sole input line.
+	* src/dfa.c (struct dfa): Add new members: min_trcount,
+	initstate_letter, initstate_others.
+	(dfaanalyze): Build states with not only a newline context but others.
+	(build_state): Don't release initial states.
+	(skip_remains_mb): Add a parameter.
+	Add a comment describing all parameters.
+	(dfaexec_main): When there are multiple start states, we are about
+	to transition from one state to another and the current byte is not
+	the first byte of a multibyte character, first advance past the
+	current multibyte character.
+	* tests/euc-mb: Add a new test.
+	* NEWS (Bug fixes): Mention it.
+	This addresses http://debbugs.gnu.org/18685
+
+2014-10-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: work around older libpcre bugs when testing -P and UTF-8
+	* tests/pcre-invalid-utf8-input: Add require_timeout_ and
+	require_compiled_in_MB_support.  Put a timeout of 3 seconds on
+	grep, to avoid having this test case loop forever with older
+	versions of libpcre, such as those found on RHEL 6.5.
+	Reported by Jim Meyering in: http://bugs.gnu.org/18806#34
+
+2014-10-24  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	tests: add test for grep -P fix
+	* tests/pcre-o: New test for this change.
+	* tests/Makefile.am (TESTS): Add it.
+
+2014-10-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix grep -P crash
+	Reported by Shlomi Fish in: http://bugs.gnu.org/18806
+	Commit 9fa500407137f49f6edc3c6b4ee6c7096f0190c5 (2014-09-16) is a
+	hack that I put in to speed up 'grep -P'.  Unfortunately, not only
+	is it violation of modularity, it's also a bug magnet, as we have
+	found out with Bug#18738 and Bug#18806.  Remove the optimization
+	instead of applying more bandaids.  Perhaps we can think of a
+	better way of doing the optimization, or perhaps we can just live
+	with a slower grep -P (as -P is inherently slower anyway...).
+	* src/grep.c, src/grep.h (validated_boundary):
+	Remove.  All uses removed.
+	* src/pcresearch.c (Pexecute): Do not worry about validated_boundary.
+
+2014-10-19  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: remove two erroneous clauses from a now-unused function
+	RE_DOT_NEWLINE and RE_DOT_NOT_NULL apply only to a dot that
+	matches any character.  Do not consider them when matching
+	with a bracket expression.
+
+	* src/dfa.c (match_mb_charset): Remove tests for RE_DOT_NEWLINE
+	and RE_DOT_NOT_NULL.
+
+2014-10-19  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: process all MBCSET constructs via glibc's matcher
+	The DFA matcher does not support collating symbols or equivalence
+	classes, so ensure that any MBCSET reference is handled by the glibc
+	matcher.  dfa.c already handled this in one case, but not the other,
+	so that a command like "printf '\0' |src/grep -aE '^\s?$'" would
+	mistakenly end up using dfa.c's match_mb_charset function rather
+	than glibc's matcher.
+
+	* src/dfa.c (dfaexec_main): Move that code into the
+	State_transition macro.  This renders the match_mb_charset
+	unused by grep.
+	* tests/multibyte-white-space: Add a test to exercise the
+	just-rendered-inaccessible code path.
+
+2014-10-15  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: initialize validation_boundary properly before use
+	* src/grep.c (main): Initialize validation_boundary before pre-searching
+	for an empty line.
+
+2014-10-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix off-by-one bug in -P optimization
+	Reported by Norihiro Tanaka in: http://bugs.gnu.org/18738
+	* src/pcresearch.c (Pexecute): Fix off-by-one bug with
+	validation_boundary.
+	* tests/init.cfg (envvar_check_fail): Catch off-by-one bug.
+
+2014-10-08  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: fix a theoretical bug
+	* src/dfa.c (dfaexec_main): After searching for a match from
+	the initial state, set the previous state, S1, to 0.
+	So far, we have found no case in which this fix makes a difference.
+	See http://debbugs.gnu.org/18645
+
+2014-10-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: modernize and simplify man page
+	* doc/grep.in.1 (Tx, Id): Remove.  All uses removed.
+	(MTO, URL): New macros, used for email and URL.
+	Use them when appropriate.
+	In main text, omit chatty discussions of other implementations;
+	the full manual suffices for this sort of thing.
+
+	doc: clarify exit status
+	Reported by Santiago Ruano Rincón in: http://bugs.gnu.org/18651
+	* doc/grep.in.1 (EXIT STATUS):
+	* doc/grep.texi (Exit Status): Clarify.
+
+2014-10-07  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: test for just-fixed bug
+	* tests/mb-dot-newline: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	* NEWS (Bug fixes): Mention it.
+	Bisection suggests that the bug was introduced by
+	commit v2.18-123-geb3292b.  Also see
+	http://debbugs.gnu.org/cgi/bugreport.cgi?msg=17;bug=18580
+
+2014-10-05  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: factor out a new nontrivial block of duplicated code
+	* src/dfa.c (State_transition): New macro.
+	(dfaexec_main): Use it twice.
+
+	dfa: check end of input buffer after transition in non-UTF8 multibyte locale
+	* src/dfa.c (dfaexec_main): Check for end of input buffer after each
+	transition in a non-UTF8 multibyte locale.
+	* tests/mb-non-UTF8-overrun: New test.
+	* tests/Makefile.am (TESTS): Add it.
+	* src/grep.c (main): With this fix, we no longer need the fourth
+	byte of "eolbytes".
+
+2014-10-04  Jim Meyering  <meyering@fb.com>
+
+	grep: avoid stack buffer read-underrun and overrun
+	Testing binaries built with -fsanitize=address caused aborts due
+	to stack underrun and overrun.
+	* src/grep.c (main): Allocate a larger buffer for eolbytes:
+	one byte before the beginning and one more after the end.
+	For details, see http://debbugs.gnu.org/18580#44.
+
+2014-10-04  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: fix subscript error when testing whether empty lines match
+	src/grep.c (grep): When testing whether an empty line matches,
+	make the input buffer one byte longer, as dfaexec uses that
+	for a sentinel.
+
+2014-09-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: minor tweaks, mostly to remove __attribute__ ((noinline))
+	That attribute isn't portable, and I found a way to get similar
+	performance with standard C features.
+	* NEWS: Document the recently-installed performance improvement.
+	* src/dfa.c (struct dfa): New member dfaexec.
+	(dfaexec_main): Remove unnecessary 'const'.
+	(dfaexec_mb, dfaexec_sb): Remove __attribute__ ((noinline));
+	no longer needed.
+	(dfaexec): Use new dfaexec member.
+	(dfainit, dfaoptimize, dfassbuild): Initialize it.
+
+2014-09-27  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: separate dfaexec function to help optimization by compiler
+	* src/dfa.c (dfaexec_main): Rename from dfaexec, add inline attribute.
+	(dfaexec_mb): New function.  Run it when d->multibyte is true.   For this
+	function inlination must be avoided.
+	(dfaexec_sb): New function.  Run it when d->multibyte is false.  For this
+	function inlination must be avoided.
+	(dfaexec): Call dfaexec_mb or dfaexec_sb accoding to d->multibyte.
+
+2014-09-27  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: speed-up at initial state
+	DFA state is always 0 until have found potential match.  So we improve
+	matching there by continuing to use the transition table.
+
+	* src/dfa.c (skip_remains_mb): New function.
+	(dfaexec): Speed-up at initial state.
+
+2014-09-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: generalize the -Wcast-align fix
+	* src/grep.c (CAST_ALIGNED): New macro.
+	(skip_easy_bytes): Use it.
+
+2014-09-27  Jim Meyering  <meyering@fb.com>
+
+	maint: suppress a false-positive -Wcast-align warning
+	Building with --enable-gcc-warnings and gcc-4.9.1 would provoke this:
+	  grep.c:499:12: error: cast from 'const char *' to 'const uword *'\
+	      (aka 'const unsigned long *') increases required alignment from\
+	      1 to 8 [-Werror,-Wcast-align]
+	    for (s = (uword const *) p; ! (*s & hibyte_mask); s++)
+		     ^~~~~~~~~~~~~~~~~
+	* src/grep.c (skip_easy_bytes): Use a pragma to suppress
+	gcc's false-positive cast-alignment warning.
+
+2014-09-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: don't check extensively for invalid prefix bytes unless -P
+	Problem reported by Jim Meyering in: http://bugs.gnu.org/18454#56
+	* src/grep.c (grep): After the first buffer is checked, leave the
+	file-type checker in TEXTBIN_UNKNOWN state only when -P is used.
+	Only the -P matcher has performance problems with checking binary
+	data that make it worthwhile to check every prefix input byte so
+	the -P matcher's TEXTBIN_UNKNOWN optimizations can come into play.
+	Other matchers can simply check the data directly, and using
+	TEXTBIN_UNKNOWN with them slows 'grep' down for no benefit.
+
+	grep: scan for valid multibyte strings more quickly
+	Scan valid multibyte strings more quickly in the common case of
+	encodings that are upward compatible with ASCII, such as UTF-8.
+	You'd think there'd be a fast standard way to do this nowadays,
+	but nooooo....
+	Problem reported by Jim Meyering in: http://bugs.gnu.org/18454#56
+	* src/grep.c (HIBYTE): New constant.
+	(easy_encoding): New static var.
+	(init_easy_encoding, skip_easy_bytes): New functions.
+	(uword): New type.
+	(buffer_textbin): Skip easy bytes quickly.
+	Don't bother with mb_clen here, since skip_easy_bytes typically
+	captures the easy cases; just use mbrlen directly.
+	(buffer_textbin, file_textbin): First arg is no longer a const
+	pointer, since the byte past the end is now an overwritten sentinel.
+	(fillbuf): Make room for a uword after the buffer, for skip_easy_bytes.
+	(main): Call init_easy_encoding.
+
+2014-09-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: speed up processing of holes before EOF on Solaris
+	* src/grep.c (fillbuf): If SEEK_DATA fails with errno == ENXIO,
+	skip over the hole at EOF.
+
+	grep: port to platforms lacking SEEK_DATA
+	Reported by Norihiro Tanaka in: http://bugs.gnu.org/18454#38
+	* src/grep.c (SEEK_DATA): Default to SEEK_SET if not defined.
+	(SEEK_HOLE): Move to top level, and default it to SEEK_SET.
+	(file_textbin): Adjust to new default.
+	(fillbuf): Don't bother with SEEK_DATA if it defaults to SEEK_SET.
+
+	grep: skip past holes efficiently
+	Take advantage of the relaxed rules for treating non-text bytes in
+	binary data, by efficiently skipping past holes on platforms
+	supporting lseek's SEEK_DATA flag.
+	On one test on a circa-2008 Sun Fire V40z running Solaris 11.2,
+	'grep x' took 0.009 real-time seconds to scan a holey file of size
+	9,223,372,036,854,775,802 bytes, for a nominal scan rate of 1 ZB/s.
+	grep 2.20's scan rate on this platform was 843 MB/s, so this is a
+	speedup by a factor of 1.2 trillion.  The speedup factor is not
+	as great on GNU/Linux hosts, due to what appear to be SEEK_DATA
+	inefficiencies, but presumably this will be cleared up in time.
+	* NEWS: Document this.
+	* src/grep.c, src/grep.h (eolbyte): Now char, not unsigned char.
+	This is for compatibility with the rest of the code.
+	The old (performance?) reasons for 'unsigned char' are now moot.
+	* src/grep.c (skip_nuls, skip_empty_lines, seek_data_failed):
+	New static vars.
+	(totalnl): Move up, since it's about input, not output, and
+	fillbuf now uses it.
+	(add_count): Move up, since fillbuf now uses it.
+	(all_zeros): New function.
+	(fillbuf): Use SEEK_DATA to skip past holes efficiently,
+	on systems that support this.
+	(grep, main): Set the new static vars.
+
+	grep: improve -P performance in typical cases
+	* src/grep.c, src/grep.h (enum textbin): Move to grep.h.
+	(input_textbin, validated_boundary): New vars.
+	* src/grep.c (grepbuf, grep): Initialize them.
+	* src/pcresearch.c (Pexecute): Do a multiline search
+	when the input is known to be free of encoding errors.
+	Quickly discard bytes that are obviously encoding errors.
+	Quickly match empty strings.
+
+	grep: minor -P speedup with jit_stack
+	* src/pcresearch.c (jit_stack): No longer static.
+
+	grep: non-text bytes in binary data may be treated as line ends
+	* NEWS, doc/grep.texi (File and Directory Selection):
+	Document this change.
+	* src/grep.c (zap_nuls): New function.
+	(grep): Use it.
+	* tests/null-byte: Relax to allow new behavior.
+
+	grep: -z no longer considers '\200' to be binary data
+	This avoids a problem when using grep -z in a Windows-1252 locale.
+	Plus, it lets 'grep -z' run a bit faster.
+	* NEWS: Document this.
+	* src/grep.c (buffer_textbin): Don't look for '\200' if -z.
+	* tests/pcre-z: Test for new behavior.
+
+	grep: refactor binary-vs-unknown-vs-text flags for clarity
+	* src/grep.c (enum textbin): New enum.
+	(textbin_is_binary): New function.
+	(buffer_textbin, file_textbin, grep): Use them, for clarity.
+
+2014-09-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix -P speedup bug with empty match
+	* src/pcresearch.c (NSUB): New top-level constant, replacing
+	'nsub' within Pexecute.
+	(Pcompile, Pexecute): Use it.
+	(Pexecute): Don't assume sub[1] is zero after a PCRE_ERROR_BADUTF8
+	match failure.
+	* tests/pcre-invalid-utf8-input: Test for this bug.
+
+	grep: port -P speedup to hosts lacking PCRE_STUDY_JIT_COMPILE
+	* src/pcresearch.c (Pcompile): Do not assume that
+	PCRE_STUDY_JIT_COMPILE is defined.
+	(empty_match): Define on all platforms.
+
+	grep: use mbclen cache in one more place
+	* src/grep.c (fgrep_to_grep_pattern): Use mb_clen here, too.
+
+	grep: avoid false alarms for mb_clen and to_uchar
+	* cfg.mk (_gl_TS_unmarked_extern_functions): New var,
+	to bypass the tight_scope false alarms on mb_clen and to_uchar.
+
+	grep: use mbclen cache more effectively
+	* src/grep.c (buffer_textbin, contains_encoding_error):
+	Use mb_clen for speed.
+	(buffer_textbin): Bypass mb_clen in unibyte locales.
+	(main): Always initialize the cache, since it's sometimes used in
+	unibyte locales now.  Initialize it before contains_encoding_error
+	might be called.
+	* src/search.h (SEARCH_INLINE): New macro.
+	(mbclen_cache): Now extern decl.
+	(mb_clen): New inline function.
+	* src/searchutils.c (SEARCH_INLINE, SYSTEM_INLINE): Define.
+	(mbclen_cache): Now extern.
+	(build_mbclen_cache): Put 1 into the cache when mbrlen returns 0.
+	(mb_goback): Use mb_len for speed, and rely on it returning nonzero.
+	* src/system.h (SYSTEM_INLINE): New macro.
+	(to_uchar): Use it.
+
+	grep: improve performance for older glibc
+	glibc has a bug where mbrlen and mbrtowc mishandle length-0 inputs.
+	Working around it in gnulib slows grep down, so disable the tests for it
+	and make sure grep works even if the bug is present.
+	* bootstrap.conf (avoided_gnulib_modules): Add mbrtowc-tests.
+	* configure.ac (gl_cv_func_mbrtowc_empty_input): Assume yes.
+	* src/searchutils.c (mb_next_wc): Don't invoke mbrtowc on empty input.
+
+	grep: treat a file as binary if its prefix contains encoding errors
+	* NEWS:
+	* doc/grep.texi (File and Directory Selection):
+	Document this.
+	* src/grep.c (buffer_encoding, buffer_textbin): New functions.
+	(file_textbin): Rename from file_is_binary.  Now returns 3-way value.
+	All callers changed.
+	(file_textbin, grep): Check the input more carefully for text vs
+	binary data.
+	(contains_encoding_error): Remove; use replaced by buffer_encoding.
+	* tests/backref-multibyte-slow:
+	* tests/high-bit-range:
+	* tests/invalid-multibyte-infloop:
+	Use -a, since the input is now considered to be binary.
+	* tests/invalid-multibyte-infloop: Add a check for new behavior.
+
+	grep: use bool for boolean in grep.c
+	* src/grep.c (show_version, suppress_errors, only_matching)
+	(align_tabs, match_icase, match_words, match_lines, errseen)
+	(write_error_seen, is_device_mode, usable_st_size)
+	(file_is_binary, skipped_file, reset, fillbuf, out_quiet)
+	(out_line, out_byte, count_matches, no_filenames, line_buffered)
+	(done_on_match, exit_on_match, print_line_head, prline, grep)
+	(grepdirent, grepfile, grepdesc, grep_command_line_arg)
+	(get_nondigit_option, main): Use bool for boolean.
+	(print_line_head, prline): Use char for byte.
+	* src/grep.h: Include <stdbool.h>, and adjust decls to match
+	changes in grep.c.
+
+	grep: speed up -P on files containing many multibyte errors
+	* src/pcresearch.c (empty_match): New var.
+	(Pcompile): Set it.
+	(Pexecute): Use it.
+
+	grep: remove/refactor unnecessary code about line splitting
+	* src/grep.c (do_execute): Remove.  Caller now uses 'execute'.
+	* src/pcresearch.c (Pexecute): Improve comment about this.
+
+2014-09-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: diagnose -P in non-UTF-8 multibyte locale
+	* src/pcresearch.c (Pcompile):
+	libpcre supports only unibyte and UTF-8 locales,
+	so report an error and exit if used in other locales.
+	* NEWS: Mention this.
+	* tests/euc-mb: Test this.
+
+2014-09-12  Jim Meyering  <meyering@fb.com>
+
+	doc: move NEWS note about GREP_OPTIONS into proper section
+	* NEWS (Changes in behavior): Move the note about GREP_OPTIONS
+	from the 2.20 section into the section for the upcoming release.
+
+2014-09-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: make GREP_OPTIONS obsolescent
+	* NEWS:
+	* doc/grep.in.1 (ENVIRONMENT_VARIABLES):
+	* doc/grep.texi (Environment Variables):
+	Document that GREP_OPTIONS is obsolescent now.
+	* src/grep.c (main): Warn if GREP_OPTIONS is used.
+	* tests/r-dot, tests/skip-device: Don't use GREP_OPTIONS.
+
+2014-09-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: bug tracker has moved to debbugs.gnu.org
+	* README (KNOWN BUGS):
+	* doc/grep.in.1:
+	* doc/grep.texi (Reporting Bugs): Document this.
+
+	grep: fix false matches with -P '...$' and invalid UTF-8
+	* tests/pcre-invalid-utf8-input: Add a test for that.
+
+	grep: fix false matches with -P '...$' and invalid UTF-8
+	* src/pcresearch.c (Pexecute): Use PCRE_NOTEOL when matching
+	initial substrings of a line.
+
+2014-09-10  Jim Meyering  <meyering@fb.com>
+
+	tests: add expect-to-fail test for a glibc regexp bug
+	* tests/triple-backref: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	(XFAIL_TESTS): List it as a known, always-failing test.
+	Based on the bug report from Paul Eggert:
+	https://sourceware.org/bugzilla/show_bug.cgi?id=17356
+
+	maint: avoid distcheck failure
+	* Makefile.am (EXTRA_DIST): Add .mailmap.
+
+2014-09-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: port recent fix to older pcre version
+	* src/pcresearch.c (Pexecute): Don't assume that a pcre_exec
+	that returns PCRE_ERROR_NOMATCH leaves its sub argument alone.
+	This assumption is false for libpcre-3 version 8.31-2ubuntu2.
+
+2014-09-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: -P now treats invalid UTF-8 input as non-matching
+	Problem reported by Santiago Vila in: http://bugs.gnu.org/18266
+	* NEWS: Mention this.
+	* src/pcresearch.c (Pexecute): Treat UTF-8 encoding errors
+	as non-matching data, instead of exiting 'grep'.
+	* tests/pcre-infloop: grep now exits with status 1, not 2.
+	* tests/pcre-invalid-utf8-input: grep now exits with status 0, not 2.
+
+2014-08-14  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix integer-width bugs in undossify_input etc.
+	undossify_input bug reported by Vincent Lefevre in:
+	http://bugs.gnu.org/18269
+	* src/dosbuf.c (undossify_input): Return size_t, not int.
+	* src/grep.c (fillbuf): Work portably even if safe_read returns a
+	value greater than SSIZE_MAX, e.g., if there's an I/O error.
+
+2014-08-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: document LANGUAGE
+	Reported by Benno Schulenberg in: http://bugs.gnu.org/18185
+	* doc/grep.texi (Environment Variables): Document LANGUAGE.
+
+	doc: prefer @env to @code
+	Reported by Benno Schulenberg in: http://bugs.gnu.org/18184
+	* doc/grep.texi: Avoid @code in favor of @env, or of nothing at all.
+
+2014-07-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: Document -r vs --exclude more carefully.
+	Problem reported by Hugues Andreux in: http://bugs.gnu.org/17763
+	* doc/grep.texi (File and Directory Selection): Be more careful
+	about documenting the interaction between recursive searching,
+	--include, --exclude, and --exclude-dir.
+
+2014-06-27  Jim Meyering  <meyering@fb.com>
+
+	maint: split long lines, and enforce the 80-column limit
+	* cfg.mk (sc_long_lines): New rule, from coreutils; exempt tests/*
+	* src/grep.c (usage): Tweak -F wording to shorten a line.
+	Correct grammar in a comment.
+	Split the --exclude-file=... description to fit within 80 columns.
+	Use emit_bug_reporting_address, eliminating another long line.
+	* src/dfa.c: Split long lines.  No semantic change.
+	* doc/grep.texi: Likewise.
+	* tests/include-exclude: Split a long line.
+	* tests/backref: Split long lines.
+	* tests/empty: Likewise.
+	* tests/fmbtest: Likewise.
+
+	doc: update HACKING
+	* HACKING: Update from coreutils.
+
+	maint: generate distributed THANKS from VC'd THANKS.in
+	* Makefile.am (THANKS): New rule.
+	* THANKS.in: New file.
+	* THANKS: Remove.  Now it's generated from the combination of
+	THANKS.in and git logs.
+	* .mailmap: New file.
+	* cfg.mk (sc_THANKS_in_duplicates): New syntax-check rule, from
+	coreutils.
+	* .gitignore: Add THANKS.
+	* thanks-gen: New file, from coreutils.
+
+2014-06-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: with -E, unmatched ')' matches itself
+	Problem reported by Nathan Weeks in: http://bugs.gnu.org/17856
+	* src/grep.c (Ecompile): Also specify RE_UNMATCHED_RIGHT_PAREN_ORD.
+	* doc/grep.texi (Fundamental Structure), NEWS: Document this.
+	* tests/ere.tests: Add a couple of tests for this.
+	* tests/spencer1.tests: Fix exit status.
+
+2014-06-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: avoid -Wstack-protector
+	This allows the use of --enable-gcc-warnings on Gentoo and Ubuntu.
+	See: http://bugs.gnu.org/17793
+	* configure.ac (WERROR_CFLAGS): Avoid -Wstack-protector.
+
+	This can be worked around, but the cure is worse than the disease.
+
+2014-06-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: don't make output files read-only
+	This led to problems, such as the prompt "mv: try to overwrite
+	'egrep', overriding mode 0555 (r-xr-xr-x)? " during a build.
+	It can be worked around, but the cure is worse than the disease;
+	making output files read-only is more trouble than it's worth.
+	* doc/Makefile.am (grep.1, egrep.1, fgrep.1):
+	* lib/Makefile.am (colorize.c):
+	* src/Makefile.am (egrep fgrep):
+	Don't make output files read-only.  Prefer separate commands to
+	'&&' when either will do.
+
+2014-06-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: remove grep.spec
+	* grep.spec: Remove; obsolete and evidently not used.
+
+2014-06-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: use gnulib fdl module
+	* bootstrap.conf (gnulib_modules): Add fdl.
+	* doc/fdl.texi: Remove, as this now comes from gnulib.
+	* doc/.gitignore: Update to match current sources.
+
+2014-06-06  Jim Meyering  <meyering@fb.com>
+
+	build: improve rule to generate egrep+fgrep scripts
+	* src/Makefile.am (egrep fgrep): chmod a=rx generated files,
+	and remove $@-t before attempting to redirect to it, in case it
+	is read-only.
+
+	build: don't redirect directly to $@
+	* lib/Makefile.am (colorize.c): Don't redirect directly to target, $@.
+	Otherwise, we could create a corrupt colorize.c file with a
+	timestamp that indicates it is up to date.
+	Also, make the generated file read-only.
+
+2014-06-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: undo part of previous change
+	* src/dfa.c (enlist): Undo part of previous change that doesn't
+	look correct and doesn't help performance much anyway.
+
+	grep: use system strstr if available and fast
+	Problem reported by Norihiro Tanaka in: http://bugs.gnu.org/17700
+	* NEWS: Document this.
+	* bootstrap.conf (gnulib_modules): Add strstr.
+	* src/dfa.c (istrstr): Remove.
+	(enlist): Use strstr instead.  Wait until we need memory before
+	allocating it; this can save an unnecessary allocate and free.
+
+	build: update gnulib submodule to latest
+
+2014-06-03  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.20
+	* NEWS: Record release date.
+
+2014-05-30  Jim Meyering  <meyering@fb.com>
+
+	grep: fix --max-count=N (-m N) to stop reading after Nth match
+	With --max-count=N (-m N), grep is supposed to stop reading input
+	after it has found the Nth match.  However, a recent context-
+	related change made it so grep would always read to end of file.
+	* src/grep.c (prtext): Don't let a negative "out_after" value
+	make "pending" line count negative.
+	* tests/max-count-overread: New test, for this.
+	* tests/Makefile.am (TESTS): Add it.
+	* NEWS (Bug fixes): Mention it.
+	* THANKS: Add names of two recent bug reporters.
+	This bug was introduced by commit v2.18-139-g5122195.
+	Reported by Marc Aldorasi in http://bugs.gnu.org/17640.
+
+2014-05-29  Jim Meyering  <meyering@fb.com>
+
+	dfa: fix off-by-one under-allocation from recent change
+	Commit v2.19-10-gc32ff67 mistakenly made this change:
+	  -realloc_trans_if_necessary (d, 1);
+	  +realloc_trans_if_necessary (d, 0);
+	which led to a heap buffer overflow.
+	* src/dfa.c (dfaexec): Allocate space for one state, as before.
+
+2014-05-28  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: fix bug with regex containing multiple begin/end-line constraints
+	grep -E 'a(b$|c$)' would mistakenly match "aa".
+	* src/dfa.c (dfamust): When resetting 'is' in OR, also reset
+	'begline' and 'endline' of 'must'.
+	* NEWS (Bug fixes): Mention it.
+	This bug was introduced via commit v2.18-85-g2c94326.
+	Reported by Péter Radics in <http://bugs.gnu.org/17617>.
+
+2014-05-26  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: simplify building initial state
+	build_state_zero doesn't need the struct dfa to be initialized,
+	so remove the initialization and simplify.
+	* src/dfa.c (build_state_zero): Remove.
+	(dfaexec): Call realloc_trans_if_necessary and build_state directly.
+
+	dfa: revert "grep: do not count newline before the start of buffer"
+	This reverts commit 5dc3af2806d21455b818be3f9da26c372e4a7f8d.
+	The previous change renders that commit unnecessary.
+
+	dfa: do not clear the first state of a transition table
+	If number of DFA states reaches 1024, build_state clears transition
+	tables to save memory.  However, the initial state is always used,
+	so clearing it just wastes time.
+	* src/dfa.c (build_state): Do not clear the initial state's
+	transition and failure tables.
+
+	grep: remove unnecessary argument
+	* src/grep.c (do_execute): Remove argument 'start_ptr'.  It's always null.
+	All uses changed.
+
+2014-05-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: --exclude-dir=FOO/ now ignores the trailing slash
+	Problem reported by Khaled Ziyaeen; see: http://bugs.gnu.org/17481
+	* NEWS, doc/grep.texi (File and Directory Selection): Document this.
+	* src/grep.c (main): Implement this.
+	* tests/include-exclude: Test this.
+
+	dist: don't distribute lib/colorize.c
+	'configure' creates this file, so it shouldn't be distributed; see:
+	http://bugs.gnu.org/17480
+	* configure.ac (COLORIZE_SOURCE): New macro.
+	Don't use AC_CONFIG_LINKS for lib/colorize.c.
+	* lib/Makefile.am (nodist_libgreputils_a_SOURCES): New macro.
+	(libgreputils_a_SOURCES): Remove colorize.c.
+	(CLEANFILES): Add colorize.c
+	(colorize.c): New rule.
+
+2014-05-23  behoffski  <behoffski@grouse.com.au>
+
+	maint: uncapitalize first letter of two dfaerror message strings
+	* dfa.c (lex): Make two message strings consistent with all of
+	the others: do not capitalize the first letter of the first word.
+
+2014-05-23  Jim Meyering  <meyering@fb.com>
+
+	maint: revert "grep: port mb_next_wc to RHEL 6.5 x86-64"
+	This reverts commit v2.18-148-ga6ae68d.
+	Now that we have gnulib change v0.1-131-g2a045bc, "mbrlen, mbrtowc:
+	fix bug with empty input", this work-around is no longer needed.
+
+	gnulib: update, for mbrlen/mbrtowc empty input bug fix
+
+2014-05-22  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.19
+	* NEWS: Record release date.
+
+2014-05-21  Jim Meyering  <meyering@fb.com>
+
+	maint: avoid new false-positive syntax-check failure
+	* cfg.mk (exclude_file_name_regexp--sc_prohibit_doubled_word):
+	Exempt new test file that contains legitimate use of "in in".
+
+2014-05-17  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	tests: add test case for newline-count fix
+	* tests/count-newline: New test.
+	* tests/Makefile.am (TESTS): Add it.
+
+2014-05-16  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: do not count newline before the start of buffer
+	* src/dfa.c (build_state): When checking whether the previous
+	character was a newline, do not count any newline before the
+	start of the buffer.
+
+2014-05-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: port mb_next_wc to RHEL 6.5 x86-64
+	* src/searchutils.c (mb_next_wc): Work around glibc bug 16950; see:
+	https://sourceware.org/bugzilla/show_bug.cgi?id=16950
+	This bug was masked in the other GNU/Linux tests I made.  It was
+	exposed on RHEL 6.5 x86-64, where the compiler (GCC Red Hat 4.4.7-4)
+	happened to use temporaries in a different way.
+	Also see recent changes to the Gnulib documentation in this area:
+	http://lists.gnu.org/archive/html/bug-gnulib/2014-05/msg00013.html
+
+	tests: port mb-non-UTF8-performance to RHEL 6.5
+	* tests/mb-non-UTF8-performance (timeout): Use an integer,
+	as 'timeout 1.234' doesn't work in EUC locales.
+
+2014-05-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	egrep, fgrep: port to Solaris 10 /bin/sh
+	This old shell doesn't grok ${0%/*}; see: http://bugs.gnu.org/17471
+	* src/Makefile.am (egrep fgrep): Don't assume the shell does substrings.
+	* src/egrep.sh (dir): New var, so that the substring calculation is
+	done only once (which is a small win even with newer shells),
+	and so that the calculation is easier to edit on older shells.
+
+2014-05-10  Jim Meyering  <meyering@fb.com>
+
+	maint: NEWS: adjust wording to reflect move
+	* NEWS (Improvements): Correct direction-relative wording,
+	now that the referent is below, not above.
+
+	maint: NEWS: move "Improvements" to the top
+	* NEWS: Move the small "Improvements" section to precede
+	the longer "Bug fixes" one.
+
+	gnulib: update submodule to latest, and bootstrap
+	* gnulib: Update submodule.
+	* bootstrap: Update from gnulib.
+
+2014-05-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: omit double includes
+	* src/dfa.c: Don't include stddef.h or stdbool.h, as dfa.h includes
+	them already, and it's the same module as we are.
+	Suggested by Aharon Robbins in: http://bugs.gnu.org/17458
+
+	dfa: fix bug with \< etc in multibyte locales
+	Problem reported by Stephane Chazelas in: http://bugs.gnu.org/16867
+	* NEWS: Document the fix.
+	* src/dfa.c (dfaoptimize): Remove any superset if changing from
+	UTF-8 to unibyte, and if the pattern has no backreferences.
+	(dfassbuild): In multibyte locales, treat \< \> \b \B as
+	backreferences in the DFA, since the DFA relies on unibyte
+	tests to check them.
+	(dfacomp): Optimize after building the superset, so that
+	dfassbuild can depend on d->multibyte.  A downside is that
+	dfaoptimize must remove supersets that are likely slower than the
+	DFA after optimization, but that's been done in the
+	above-described change.
+	* tests/Makefile.am (XFAIL_TESTS): Remove word-delim-multibyte,
+	since the test works now.
+
+	tests: add test case for -C 0 change
+	* tests/context-0: New test.
+	* tests/Makefile.am (TESTS): Add it.
+
+	grep: -A 0, -B 0, -C 0 now output a separator
+	Problem reported by Dan Jacobson in: http://bugs.gnu.org/17380
+	* NEWS:
+	* doc/grep.texi (Context Line Control): Document this.
+	* src/grep.c (prtext): Output a separator even if context is zero.
+	(main): Default context is now -1, not 0.
+
+2014-05-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: minor improvements to retry-DFA-superset patch
+	* src/dfasearch.c (EGexecute): Avoid unnecessary test in a context
+	where memrchr cannot return a null pointer.
+
+2014-05-09  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: retry DFA superset after matching multiple lines
+	* src/dfasearch.c (EGexecute): Without this patch, the code reverts
+	to KWset when the DFA superset matches multiple lines.
+	However, if the DFA superset matches multiple lines, it most likely
+	also matches a single line, and reverting to KWset means dfafast
+	won't work effectively.  Change the code so that it retries the DFA
+	superset immediately after it matches multipline lines.  On my platform
+	this improves the performance of "LC_ALL=C grep '\(ab\)cd\1d' k" from
+	3.48 to 2.14 seconds realtime, where k contains the output of
+	"yes abcdabc | head -50000000".
+
+	dfa: fix inconsistency in multibyte locales
+	* src/dfa.c (dfaexec): Use the same exit condition in multibyte
+	locales as in unibyte.
+
+2014-05-08  Jim Meyering  <meyering@fb.com>
+
+	maint: mark some breakless cases with /* fallthrough */ comment
+	* src/dfa.c (addtok_mb, dfaanalyze): Add comment so that it is
+	clear that the "break" statement is deliberately omitted.
+
+2014-05-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: assume C89 for CHAR_BIT
+	* src/dfa.c (CHARBITS): Remove.  All uses replaced by CHAR_BIT.
+	(NOTCHAR): Now an enum, since it need not be a macro.
+
+	dfa: don't assume unsigned int is exactly 32 bits wide
+	Sun C 5.12 (sparc) warns of the potential unportability.
+	* src/dfa.c (charclass_word): New type, for clarity.
+	All relevant uses of 'unsigned' changed.
+	(CHARCLASS_WORD_BITS): Rename from INTBITS.  All uses changed.
+	Now an enum, since it needn't be a macro.
+	(CHARCLASS_WORD_MASK): New macro.
+	(CHARCLASS_WORDS): Rename from CHARCLASS_INTS.  All uses changed.
+	(setbit, clrbit): Cast 1 to charclass_word, for clarity.
+	(notset, add_utf8_anychar, dfastats):
+	Don't assume unsigned int is exactly 32 bits wide.
+	(dfastate): Don't rely on implementation-defined conversion of
+	greater-than-INT_MAX unsigned to int.  Change bit test to resemble
+	tstbit more.
+
+	maint: fix indenting to pacify 'prohibit_tab_based_indentation'
+	* src/dfa.c: Use spaces and not tabs to indent some lines.
+
+	grep: simplify and clarify invert-related code
+	* src/grep.c (out_invert, prtext): Use bool for booleans.
+	(prline): Remove unnecessary '!!' on a value that is always 0 or 1.
+	(prtext): Remove last arg NLINESP; use !out_invert instead.  All uses
+	changed.  Move decls to nearer uses, since we can assume C99 here.
+	Update 'outleft' and 'after_last_match' here; it's simpler.
+	(grepbuf): Compute return value by subtracting new from old 'outleft',
+	rather than by keeping a separate running total.  Avoid code duplication
+	by arranging for prtext to be called from one place, not three.
+
+2014-05-08  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: improve performance of -v when combined with -L, -l or -q
+	Problem reported by Jörn Hees in: http://bugs.gnu.org/17427
+	* src/grep.c (grepbuf, grep): When -v is combined with -L, -l, or -q,
+	don't read data unnecessarily after a non-match is found.
+
+2014-05-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: mention performance changes
+	* NEWS: Discuss recent performance improvements and downgrades.
+
+	dfa: clarify use of "if"
+	The phrase "Y is true if X" is logically equivalent to "X implies Y",
+	but often "X if and only if Y" was intended.
+	* src/dfa.c, src/dfa.h: Reword to avoid the incorrect use of "if".
+
+	dfa: minor performance improvement for previous change
+	* src/dfa.c (struct dfa): New member 'fast'.  Remove 'has_backref'.
+	All uses changed.
+
+2014-05-06  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: speed up 'dfaisfast'
+	* src/dfa.c (struct dfa): New member 'has_backref'.
+	(addtok_mb): Set it.
+	(dfaisfast): Use it.
+
+2014-05-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix -w match next to a multibyte letter
+	* NEWS: Document this.
+	* src/dfasearch.c, src/kwsearch.c (WCHAR): Remove.
+	(wordchar): New static function.
+	* src/dfasearch.c (EGexecute):
+	* src/kwsearch.c (Fexecute): Use the new functions, so that the
+	code works correctly if a multibyte character adjacent to the
+	match has two or more bytes.
+	* src/search.h, src/searchutils.c (mb_prev_wc, mb_next_wc):
+	New functions.
+	* tests/word-delim-multibyte: Add a test for grep -w (which now
+	passes), and a test for \> (which still fails).  The \< test also
+	still fails.
+
+	grep: improve internal API for multibyte boundary
+	* src/search.h, src/searchutils.c (mb_goback): Rename from
+	is_mb_middle.  Omit last arg.  Return number of bytes to go back,
+	not just a boolean.  All uses changed.
+	* src/dfasearch.c (EGexecute):
+	* src/kwsearch.c (Fexecute): Adjust to API change.
+	* src/kwsearch.c (Fexecute): Eliminate common subexpression.
+
+	grep: fix encoding-error incompatibilities among regex, DFA, KWset
+	This follows up to http://bugs.gnu.org/17376 and fixes a different
+	set of incompatibilities, namely between the regex matcher and the
+	other matchers, when the pattern contains encoding errors.
+	The GNU regex matcher is not consistent in this area: sometimes
+	an encoding error matches only itself, and sometimes it
+	matches part of a multibyte character.  There is no documentation
+	for grep's behavior in this area and users don't seem to care,
+	and it's simpler to defer to the regex matcher for problematic
+	cases like these.
+	* NEWS: Document this.
+	* src/dfa.c (ctok): Remove.  All uses removed.
+	(parse_bracket_exp, atom): Use BACKREF if a pattern contains
+	an encoding error, so that the matcher will revert to regex.
+	* src/dfasearch.c, src/grep.c, src/pcresearch.c, src/searchutils.c:
+	Don't include dfa.h, since search.h now does that for us.
+	* src/dfasearch.c (EGexecute):
+	* src/kwsearch.c (Fexecute): In a UTF-8 locale, there's no need to
+	worry about matching part of a multibyte character.
+	* src/grep.c (contains_encoding_error): New static function.
+	(main): Use it, so that grep -F is consistent with plain fgrep
+	when the pattern contains an encoding error.
+	* src/search.h: Include dfa.h, so that kwsearch.c can call using_utf8.
+	* src/searchutils.c (is_mb_middle): Remove UTF-8-specific code.
+	Callers now ensure that we are in a non-UTF-8 locale.
+	The code was clearly wrong, anyway.
+	* tests/fgrep-infloop, tests/invalid-multibyte-infloop:
+	* tests/prefix-of-multibyte:
+	Do not require that grep have a particular behavor for this test.
+	It's OK to match (exit status 0), not match (exit status 1), or
+	report an error (exit status 2), since the pattern contains an
+	encoding error and grep's behavior is not specified for such
+	patterns.  Test only that KWset, DFA, and regex agree.
+	* tests/prefix-of-multibyte: Add tests for ABCABC and __..._ABCABC___.
+
+2014-05-04  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: minor simplification
+	* src/dfa.c (parse_bracket_exp): Use enum, not macro, and move var
+	to just the scope it's needed.
+
+	grep: simplify and fix problems with KWset-DFA agreement patch
+	* src/dfa.c (dfambcache, parse_bracket_exp): Simplify.
+	(mbs_to_wchar, wctok, FETCH_WC, match_anychar, match_mb_charset)
+	(check_matching_with_multibyte_ops, transit_state_consume_1char)
+	(transit_state, dfaexec): Use wint_t, not wchar_t, so that
+	WEOF is treated correctly on platforms where WEOF is not a valid
+	wchar_t value.
+	(ctok, lex): Use int, not unsigned int, for characters,
+	so that EOF is treated more naturally.
+	(parse_bracket_exp): Use NOTCHAR to mark uninitialized char, since
+	FETCH_WC can now set the char to EOF.
+	(lex): Remove unnecessary test for EOF.
+	(parse_bracket_exp, atom): Swap then and else parts, to put
+	the small one first; this is more readable here.
+	* src/searchutils.c (is_mb_middle): Simplify.
+
+	tests: improve coverage for prefix-of-multibyte
+	* tests/prefix-of-multibyte: Also test the regex version.
+
+2014-05-04  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: make KWset and DFA agree about invalid sequences in patterns
+	See: http://bugs.gnu.org/17376
+	* src/dfa.c (dfambcache): Don't cache invalid sequences, because they can't be
+	represented by wide characters.
+	(dfambcache, mbs_to_wchar): Return WEOF for invalid sequences.
+	(ctok): New global variable.
+	(parse_bracket_exp, atom, match_anychar, match_mb_charset): Don't allow WEOF.
+	(lex): Set 'ctok'.
+	* src/kwsearch.c (Fexecute):
+	* src/searchutils.c (is_mb_middle): Don't check here.
+	* tests/invalid-multibyte-infloop: Adjust to fixed behavior.
+	* tests/prefix-of-multibyte: Add test cases for this bug.
+
+2014-05-03  Jim Meyering  <meyering@fb.com>
+
+	maint: make ChangeLog generation more robust
+	* Makefile.am (gen-ChangeLog): Sync changes from GNU coreutils,
+	to ensure exit status is propagated, and to support an optional
+	git-log-fix file.
+
+2014-05-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: clarify EGexecute slightly
+	* src/dfasearch.c (EGexecute): Change if-then-else to !if-else-then.
+
+2014-05-03  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: fix the bug in previous patch.
+	* src/dfasearch.c (EGexecute): Do it.
+
+2014-04-30  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: simplify EGexecute further
+	* src/dfa.c, src/dfa.h (dfasuperset): Arg is now const pointer.
+	Now pure.
+	* src/dfasearch.c (EGexecute): Coalesce some duplicate code.
+	Don't worry about memrchr returning NULL when that's impossible.
+
+2014-04-30  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: adjust timing back to kwset when dfaisfast is true
+	* src/dfasearch.c (EGexecute): If DFA fails after kwset succeeds,
+	the code doesn't return to kwset until it reaches the end of the buffer
+	or finds a match.  Because of this, although some cases speed up,
+	others slow down.
+
+	Adjust the heuristic for switching to the DFA, so that it
+	is more likely to switch at the right times.
+
+2014-04-30  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: simplify superset
+	* src/dfa.h (dfahint): Remove decl.
+	(dfasuperset): New decl.
+	* src/dfa.c (dfahint): Remove.
+	(dfassbuild): Rename from dfasuperset.
+	(dfasuperset): New function.  It returns the superset of D.
+	* src/dfasearch.c: Use dfasuperset instead of dfahint, and simplify.
+
+	dfa: optimize memory allocation
+	* src/dfa.c (epsclosure): get the value of 'visited' from the argument.
+	(dfaanalyze): Define and allocate variable 'visited'.
+	(dfastate): Use not 'insert' but 'merge' to insert positions for
+	state 0 of DFA.
+
+2014-04-29  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	kwset: improve performance by inlining tr
+	Without this change, older versions of GCC won't inline 'tr', and this
+	can hurt performance significantly.  See: http://bugs.gnu.org/17229#64
+	* src/kwset.c (tr): Make it inline.
+
+2014-04-27  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+	* gnulib: This fixes a bug whereby running bootstrap
+	would remove our build-aux/git-log-fix file.
+
+2014-04-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	kwset: improve performance by inlining more
+	Problem reported by Norihiro Tanaka in <http://bugs.gnu.org/17229#55>.
+	* src/kwset.c (bmexec_trans): Rename from bmexec, and make it inline.
+	(bmexec): New implementation, which calls bmexec_trans.  This helps
+	GCC inline more aggressively with the default optimization, and
+	improves performance 25% with the reported benchmark on my host.
+
+2014-04-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	kwset: speed up by using memchr2
+	Idea suggested by Eric Blake in: http://bugs.gnu.org/17229#43
+	* bootstrap.conf (gnulib_modules): Add memchr2.
+	* src/kwset.c: Include stdint.h, for uintptr_t.  Include memchr2.h.
+	(struct kwset): New members gc1, gc2, gc1help.
+	(tr): Move earlier, so it can be used earlier.
+	(kwsprep): Initialize struct kwset's new members.
+	(memchr_kwset): Rename from memchr_trans.  Combine C and TRANS args into
+	new arg KWSET.  All uses changed.  Use memchr2 when appropriate.
+	(bmexec): Use new members instead of recomputing their values.
+	Increase advance_heuristic; it's just a guess, but memchr2 probably
+	makes it reasonable to increase it.
+
+	kwset: improve performance when large Boyer-Moore key doesn't match
+	* src/kwset.c (bmexec): As a heuristic, prefer memchr to seeking
+	by delta1 only when the latter doesn't advance much.
+
+	dfa: fix index bug in previous patch, and simplify
+	* src/dfa.c, src/dfa.h (dfaisfast): Arg is const pointer.
+	* src/dfa.c (dfaisfast): Simplify, since supersets never contain BACKREF.
+	* src/dfa.h (dfaisfast): Declare to be pure.
+	* src/dfasearch.c (EGexecute): Fix typo that could cause buffer
+	read overrun when !dfafast.  Hoist duplicate computation out
+	of an if's then and else parts.
+
+2014-04-26  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: speed up for a case to repeat failure in DFA after success in kwset
+	A DFA is typically much faster if it is unibyte and does not set BACKREF.
+	Skip kwset if the DFA is fast.  For example:
+
+	    yes abcdabc | head -50000000 >k
+	    env LC_ALL=C time -p src/grep -i 'abcd.bd' k
+
+	This improved real-time from 4.86 to 1.34 s.
+
+	* src/dfa.c, src/dfa.h (dfaisfast): New function.
+	* src/dfasearch.c (EGexecute): Use it.
+
+2014-04-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: fix recently-introduced memory leak
+	Problem reported by Aharon Robbins in: http://bugs.gnu.org/17341
+	* src/dfa.c (dfasuperset): free after dfafree.
+
+	misc: fix doc and test bugs re grep -z
+	Problem reported by Stephane Chazelas in: http://bugs.gnu.org/16871
+	* doc/grep.texi (Usage): Remove incorrect example with -P.
+	* tests/pcre: Improve test so that it actually tests whether \s
+	matches a newline.
+
+	dfa: minor simplification of dfaexec
+	* src/dfa.c (dfaexec): Streamline updating of returned values.
+	Don't bother to check d->multibyte before updating mbp.
+	Avoid duplicate p > end test.
+
+2014-04-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: simplify and be more consistent about MB_CUR_MAX
+	* src/dfa.c (struct dfa): New member 'multibyte',
+	replacing 'mb_cur_max'.  All uses changed.  Use this new member
+	consistently, instead of sometimes referring to MB_CUR_MAX directly.
+
+	dfa: fix comment
+	* src/dfa.c (maybe_realloc): Fix comment to match behavior better.
+
+2014-04-24  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: skip checking of multibyte character boundary, reaching at eolbyte
+	* src/dfa.c (dfaexec): Skip checking of multibyte character boundary,
+	reaching at eolbyte.
+
+2014-04-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: fix incorrect comment that led to heap overrun
+	* dfa.c (maybe_realloc): Fix comment to match behavior.
+
+	dfa: minor tuneup of dfamust memory savings patch
+	* src/dfa.c (allocmust): Use xmalloc, not xzalloc.
+	Initialize the must completely, so that the caller need not
+	invoke resetmust.  All callers changed.
+	(dfamust): Omit asserts that aren't needed on typical machines
+	where dereferencing NULL dumps core.  Don't leak memory if the
+	pattern contains a NUL byte.
+
+2014-04-24  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: avoid wasting memory for large patterns in dfamust
+	* src/dfa.c (struct must): New member 'prev'.  It points to the
+	previous must.
+	(allocmust): New function.
+	(freemust): New function.
+	(dfamust): Use it.
+
+2014-04-24  Jim Meyering  <meyering@fb.com>
+
+	grep: fix new heap write buffer overrun
+	* src/dfa.c (parse_bracket_exp): Fix off-by-one allocation error.
+	Exposed by running the tests with an ASAN-enabled binary (i.e.,
+	created using gcc's -fsanitize=address option).  Introduced by
+	commit v2.18-70-gd3d9612, "dfa: simplify range char allocation".
+
+2014-04-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: suppress unsafe-loop-optimizations warnings
+	I ran into one of these while trying out GCC 4.9.0's new
+	-fsanitize=undefined option.  The warning told me that GCC didn't
+	do an unsafe optimization, but in 'grep' this is not typically a
+	symptom of a programming error.
+	* configure.ac (WERROR_CFLAGS): Suppress -Wunsafe-loop-optimizations.
+
+2014-04-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: fix memory leak reintroduced by previous patch
+	Reported by Norihiro Tanaka in <http://bugs.gnu.org/17328#16>.
+	* src/dfa.c (dfaexec): Allocate mb_match_lens and mb_follows only
+	if not already allocated.
+	(free_mbdata): Null out mb_match_lens to mark it as being freed.
+
+2014-04-23  Jim Meyering  <meyering@fb.com>
+
+	tests: use consistent spelling for locale name, en_US.UTF-8
+	* tests/pcre-infloop: Spell locale name, en_US.UTF-8, consistently,
+	converting this one use from "en_US.utf8", which would provoke a
+	test failure on OS/X.
+
+2014-04-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: omit static variables that limited dfaexec to one struct dfa
+	Problem reported by Aharon Robbins in: http://bugs.gnu.org/17328
+	* src/dfa.c (struct dfa): New member mbs.
+	mb_follows is now a position_set, not a pointer to one;
+	this simplifies memory allocation.  All uses changed.
+	(mbs_to_wchar): Put DFA arg at the end, in place of the mbstate_t *arg,
+	since the DFA now contains an mbstate_t.  All uses changed.
+	(mbs): Remove static variable.
+	(dfaexec): Remove static bool that attempted to optimize memory
+	allocation, as this wasn't correct for Gawk.  Perhaps we can think
+	of a better way to optimize memory.
+
+2014-04-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	kwset: simplify and speed up Boyer-Moore unibyte -i in some cases
+	This improves the performance of, for example,
+	yes jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj | head -10000000 | grep -i jk
+	in a unibyte locale.
+	* src/kwset.c (memchr_trans): New function.
+	(bmexec): Use it.  Simplify the code and remove some of the
+	confusing gotos and breaks and labels.  Do not treat glibc memchr
+	as a special case; if non-glibc memchr is slow, that is lower
+	priority and I suppose we can try to work around the problem in
+	gnulib.
+
+2014-04-22  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: speed-up by using memchr() in Boyer-Moore searching
+	memchr() of glibc is faster than seeking by delta1 on some platforms.
+	When there is no chance to match for a while, use it on them.
+	* src/kwset.c (bmexec): Use memchr() in Boyer-Moore searching.
+
+2014-04-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	kwset: simplify Boyer-Moore with unibyte -i
+	This change doesn't significantly affect performance on my platform,
+	and should make the code easier to maintain.
+	* src/kwset.c (BM_DELTA2_SEARCH, LAST_SHIFT, TRANS):
+	Remove these macros, in favor of ...
+	(tr, bm_delta2_search): New functions.  All uses changed.
+	The latter function is inline because this improves code size and
+	runtime CPU slightly on x86-64 with gcc -O2 (GCC 4.9.0).
+	(bmexec): Prefer tr when that's simpler.
+
+2014-04-22  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: may also use Boyer-Moore algorithm for case-insensitive matching
+	* src/kwset.c (BM_DELTA2_SEARCH, LAST_SHIFT, TRANS): New macro.
+	(bmexec): Use character translation table.
+	(kwsexec): Call bmexec for case-insensitive matching.
+	(kwsprep): Change the `if' condition.
+
+2014-04-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: -P now rejects invalid input sequences in UTF-8 locales
+	See <http://bugs.gnu.org/17245> and <http://bugs.exim.org/1468>.
+	* NEWS: Document this.
+	* src/pcresearch.c (Pexecute): Do not use PCRE_NO_UTF8_CHECK,
+	as this leads to undefined behavior when the input is not UTF-8.
+	* tests/pcre-infloop, tests/pcre-invalid-utf8-input:
+	Exit status is now 2, not 1, when grep -P is given invalid UTF-8
+	data in a UTF-8 locale.
+
+	dfa: minor improvements to previous patch
+	* src/dfa.c (dfamust): Use &=, not if-then.
+	* src/dfa.h (struct dfamust):
+	* src/dfasearch.c (begline, hwsmusts): Use bool for boolean.
+	* src/dfasearch.c (kwsmusts):
+	* src/kwsearch.c (Fcompile): Prefer decls after statements.
+	* src/dfasearch.c (kwsmusts): Avoid conditional branch.
+	* src/kwsearch.c (Fcompile): Unify the two calls to kwsincr.
+
+2014-04-21  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: speed-up for exact matching with begline and endline constraints.
+	dfamust turns on the flag when a state exactly matches the proposed one.
+	However, when the state has begline and/or endline constraints, turns
+	off it.
+
+	This patch enables to match a state exactly, even if the state has
+	begline and/or endline constraints.  If a exact string has one of their
+	constrations, the string adding eolbyte to a head and/or foot is pushed
+	to kwsincr().  In addition, if it has begline constration, start
+	searching from just before the position of the text.
+
+	* src/dfa.c (variable must): New members `begline' and `endline'.
+	(dfamust): Consideration of begline and endline constrations.
+	* src/dfa.h (struct dfamust): New members `begline' and `endline'.
+	* src/dfasearch.c (kwsmusts): If a exact string has begline constration,
+	start searching from just before the position of the text.
+	(EGexecute): Same as above.
+	* src/kwsearch.c (Fexecute): Same as above.
+
+2014-04-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: fix bug that caused NUL to be mishandled in patterns
+	This bug was introduced in the early-2012 patches that fixed some
+	context-handling bugs.  Bisecting found commit
+	d8951d3f4e1bbd564809aa8e713d8333bda2f802 (2012-02-05 18:00:43 +0100),
+	but it apears the underlying problem was introduced in commit
+	8b47c4cf6556933f59226c234b0fe984f6c77dc7 (2012-01-03 11:22:09 +0100).
+	* NEWS: Mention bug fix.
+	* src/dfa.c (char_context): Consider NUL to be a newline only if -z.
+	* tests/Makefile.am (TESTS): Add null-byte.
+	* tests/null-byte: New file.
+
+2014-04-19  Jim Meyering  <meyering@fb.com>
+
+	build: reenable some compiler warning options
+
+2014-04-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: fix pointer type conversion bug
+	The code converted between size_t * and ptrdiff_t *, which wasn't
+	diagnosed by modern x86-64 GCC but isn't portable.  Problem
+	reported by Norihiro Tanaka in <http://bugs.gnu.org/17136#31>.
+	* configure.ac (WERROR_CFLAGS): Don't add -Wno-pointer-sign.
+	We want GCC to diagnose pointer signedness problems, as they
+	violate the C standard and other compilers no doubt complain too.
+	* src/dfa.c (struct dfa): Change type of salloc to size_t.
+	(realloc_trans_if_necessary): Convert signed value to size_t before
+	passing its address to x2nrealloc.  Changing the type of tralloc
+	to size_t might have led to problems elsewhere.
+
+2014-04-18  Jim Meyering  <meyering@fb.com>
+
+	maint: Revert "dfa: avoid new NULL dereference"
+	This reverts commit 5190041fe515743ef4545abf287d243bc025c701.
+	It was only a bug if one neglected to update to the latest gnulib.
+	With the newer xn2realloc, there is no problem.
+
+	dfa: avoid new NULL dereference
+	* src/dfa.c (dfa_charclass_index): Restore a "+ 1" mistakenly omitted
+	during recent improvements.  Introduced in v2.18-66-g6a60fd5.
+
+2014-04-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: minor cleanup
+	* src/dfa.c (MAX): Remove; no longer used.
+
+2014-04-17  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: speed up by checking multibyte characters on demand
+	If dfaexec() runs in non-UTF8 locales, length and wide character
+	representation are checked for all characters of a line in a input
+	string.  However, if matched early in the line, results for remaining
+	characters are wasted.
+
+	This patch checks multibyte characters on demand.  It should work
+	faster for early matches, and reduces memory requirements.
+
+	* src/dfa.c (struct dfa): Remove members mblen_buf, nmblen_buf,
+	inputwcs, ninputwcs.  All uses removed.
+	(buf_begin, buf_end, prepare_wc_buf): Remove.  All uses removed.
+	(SKIP_REMAINS_MB_IF_INITIAL_STATE): Remove.  This is now expanded
+	when used.
+	(match_anychar, match_mb_charset, check_matching_with_multibyte_ops):
+	New arg wc, mbclen.  Remove arg idx.  All uses changed.
+	(transit_state_consume_1char): New arg wc.  All uses changed.
+	(transit_state): New arg 'end'.  All uses changed.
+
+2014-04-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: trans reallocation microoptimization
+	* src/dfa.c (realloc_trans_if_necessary):
+	Help the compiler avoid unnecessary reloads.
+
+	dfa: simplify dfmust initialization
+	* src/dfa.c (dfamust): Don't initialize musts twice.
+	Use zcalloc, not xmalloc followed by zeroing.
+	Make result a const pointer.
+
+	dfa: simplify freelist
+	* src/dfa.c (freelist): Don't null out array while freeing its
+	pointers; the caller can do that if needed.
+	(resetmust): Null out zeroth entry of array.
+
+	dfa: avoid duplicate strlen when allocating memory
+	* src/dfa.c (dfamust): Use xstrdup, not strlen (twice) + xmemdup.
+
+	dfa: simplify memory allocation
+	* src/dfa.c (icatalloc, freelist, enlist, comsubs, addlists, inboth)
+	(dfamust): Don't worry about null arguments or results,
+	as memory allocators no longer can return null pointers.
+	(dfamust): Invoke malloc just once when building a concatenated string.
+
+	dfa: simplify position set and element count allocation
+	* src/dfa.c (dfaanalyze): Allocation position set info all at one go,
+	and similarly for element count info.
+
+	dfa: simplify multibyte_prop allocation
+	* src/dfa.c (struct dfa): Simplify by removing nmultibyte_prop;
+	it should always be the same as talloc.  All uses changed.
+
+	dfa: simplify range char allocation
+	* src/dfa.c (struct dfa): Simplify by allocating one array of ranges
+	rather than one for range starts and another for range ends.
+	All uses changed.
+
+	dfa: simplify transition table allocation
+	* src/dfa.c (struct dfa): Remove member 'realtrans', as it can
+	be computed from 'trans'.  All uses changed.
+	(realloc_trans_if_necessary): Move earlier, to avoid a forward decl.
+	Use x2nrealloc to compute new size, rather than doing it by hand,
+	which omits a check for unlikely overflow.
+	(realloc_trans_if_necessary, dfafree): Adjust to the fact that
+	d->trans now might be either NULL, or 1 + the pointer to free.
+	(build_state, build_state_zero): Use realloc_trans_if_necessary
+	instead of duplicating its code.
+
+	dfa: better size-overflow check
+	* src/dfa.c (dfasuperset): Let xnmalloc do the multiplication,
+	to check for size arithmetic overflow better.
+
+	dfa: avoid unnecessary work and other initialization
+	* src/dfa.c (dfaanalyze, dfainit):
+	Don't bother allocating when x2nrealloc will do it for us.
+	(dfastate): Allocate grps and labels on the stack, as their
+	size is known at compile time.
+	(build_state): Use xmalloc, not xnmalloc, since the multiplication
+	can be done at compile-time.
+
+	dfa: clarify memory allocation and port to IRIX
+	This change was prompted by a porting problem:
+	IRIX defines its own MALLOC macro, which clashes with ours.
+	More generally, the MALLOC etc. macros are confusing, as they
+	look like functions but do not have C-function semantics.
+	A functional style makes the code easier to read, and though
+	it lengthens the code a bit here it'll make other
+	simplifications easier.
+	* src/dfa.c (XNMALLOC, XCALLOC, CALLOC, MALLOC, REALLOC): Remove.
+	All uses replaced by xnmalloc etc.
+	(REALLOC_IF_NECESSARY): Remove; all uses replaced by ....
+	(maybe_realloc): New function.
+	(copy, merge): Free and allocate rather than realloc, as we
+	needn't save the contents.
+
+2014-04-14  Jim Meyering  <meyering@fb.com>
+
+	tests: detect an infloop-inducing bug in grep -P (pcre-8.35)
+	* tests/pcre-infloop: New test.
+	* tests/Makefile.am (TESTS): Add it.
+
+2014-04-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2014-04-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: improvements for the open-CSET patch
+	* src/dfa.c (dfamust): Simplify by removing some duplicate code.
+	Optimize patterns like [aaa] even when not case-folding.
+	Avoid an unnecessary copy of the charclass.
+
+2014-04-11  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: open CSET and transform into uppercase when MB_CUR_MAX == 1
+	In unibyte locales with -i, kwset matching isn't helpful, because
+	dfamust doesn't extract the CSET entries.  Fix dmamust so that it
+	does that, and makes it possible to take out a longer fixed string
+	from tokens.
+	* src/dfa.c (dfamust): open CSET and transform into uppercase
+	when MB_CUR_MAX == 1.
+
+2014-04-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: cleanup for HAS_DOS_FILE_CONTENTS issue
+	While cleaning up the empty-string fix, I noticed that one part of
+	the code worried about CRLF in pattern files whereas another part
+	did not.  Fix this by using the same approach in both places,
+	and make the CRLF code more modular in the process.
+	* src/dosbuf.c (dos_binary, dos_unix_byte_offsets): New functions.
+	(undossify_input, dossified_pos): Do nothing if ! O_BINARY.
+	* src/grep.c: Always include dosbuf.c so that the code is
+	checked statically even on non-DOS hosts.
+	(dos_binary, dos_unix_byte_offsets): New decls.
+	(undossify_input): Declare unconditionally.
+	* src/grep.c (fillbuf, print_line_head, main):
+	* src/kwsearch.c (Fcompile):
+	Simplify by not worrying about HAVE_DOS_FILE_CONTENTS.
+	* src/grep.c (main): fopen with "rt" if O_TEXT; this is simpler
+	than worrying about HAVE_DOS_FILE_CONTENTS elsewhere.
+	* src/system.h (HAVE_DOS_FILE_CONTENTS): Remove.
+
+	grep: cleanup for empty-string fix
+	* NEWS: Document it.
+	* src/dfasearch.c (GEAcompile):
+	* src/kwsearch.c (Fcompile):
+	Use C99-style decls to simplify.  Avoid duplicate code.
+	* tests/empty-line: Add some more tests like this.
+
+2014-04-11  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: no match for the empty string included in multiple patterns
+	* src/dfasearch.c (EGAcompile): Fix it.
+	* src/kwsearch.c (Fcompile): Fix it.
+
+2014-04-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: remove bool_bf
+	The extra complexity of this microoptimization wasn't ever much help,
+	and currently it generated bigger code with gcc -O2 (x86-64).
+	* src/dfa.c (bool_bf): Remove.  All uses replaced by plain 'bool',
+	without a bitfield.
+
+2014-04-08  Jim Meyering  <meyering@fb.com>
+
+	maint: avoid sc_po_check syntax-check failure (kwset.c)
+	* po/POTFILES.in: Remove kwset.c from this list, since it
+	no longer contains a translatable diagnostic.
+
+2014-04-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: port better to hosts with nonstandard nl_langinfo
+	On some hosts, nl_langinfo returns strings other than "UTF-8" when
+	UTF-8 is used, and (worse) return "UTF-8" even if the encoding is
+	single-byte.  Work around these problems by trying a sample
+	character instead.
+	* src/dfa.c, src/pcresearch.c, src/searchutils.c:
+	Don't include <langinfo.h>.
+	* src/dfa.c (using_utf8): Test for UTF-8 by trying a character
+	rather than by invoking nl_langinfo (CODESET); this is more
+	portable in practice, and removes a dependency on
+	HAVE_LANGINFO_CODESET.
+	* src/pcresearch.c: Include dfa.h, for using_utf8.
+	(Pcompile): Use using_utf8 rather than nl_langinfo.
+
+2014-04-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: prefer bool in DFA internals
+	* src/dfa.c (bool_bf): New type.
+	(dfa_state): Use it, as this seems to generate slightly better
+	code with GCC.
+	(struct mb_char_classes, struct dfa, equal, case_fold, dfasyntax)
+	(laststart, parse_bracket_exp, lex, dfaparse, dfaanalyze, dfastate)
+	(match_mb_charset, dfamust):
+	Use bool for boolean.
+	(using_utf8) [!HAVE_LANGINFO_CODESET]: Tune.
+	(dfaanalyze): Prefer & to && and | to || on booleans; it's simpler here.
+	(dfastate): Simplify charclass nonzero testing.  Redo has_mbcset
+	test so that the compiler's more likely to optimize it.
+
+2014-04-07  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: prefer regex to DFA for ANYCHAR in multibyte locales
+	* src/dfa.c (dfa_state): New member has_mbcset.
+	Rename backref to has_backref, and make it of type bool too.
+	All uses changed.
+	(state_index, dfastate): Initialize new member.
+	(dfaexec): Prefer regex to DFA for ANYCHAR in multibyte locales.
+
+2014-04-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: remove trival_case_ignore
+	This optimization is no longer needed, given the other
+	optimizations recently installed.  Derived from a patch by
+	Norihiro Tanaka; see <http://bugs.gnu.org/17019>.
+	* bootstrap.conf (gnulib_modules): Remove assert-h.
+	* src/dfa.c (CASE_FOLDED_BUFSIZE): Move here from dfa.h.
+	Remove now-unnecessary static assert.
+	(case_folded_counterparts): Now static.
+	* src/dfa.h (CASE_FOLDED_BUFSIZE, case_folded_counterparts):
+	Remove decls; no longer public.
+	* src/dfasearch.c (kwsmusts): Use kwset even if fill MB_CUR_MAX > 1
+	and case-insensitive.
+	* src/grep.c (MBRTOWC, WCRTOMB): Remove.
+	(fgrep_to_grep_pattern): Use mbrtowc, not MBRTOWC.
+	(trivial_case_ignore): Remove; this optimization is no longer needed.
+	All uses removed.
+
+	grep: simplify memory allocation in kwset
+	* src/kwset.c: Include kwset.h first, to check its prereqs.
+	Include xalloc.h, for xmalloc.
+	(kwsalloc): Use xmalloc, not malloc, so that the caller need not
+	worry about memory allocation failure.
+	(kwsalloc, kwsincr, kwsprep): Do not worry about obstack_alloc
+	returning NULL, as that's not possible.
+	(kwsalloc, kwsincr, kwsprep, bmexec, cwexec, kwsexec, kwsfree):
+	Omit unnecessary conversion between struct kwset * and kwset_t.
+	(kwsincr, kwsprep): Return void since memory-allocation failure is
+	not possible now.  All uses changed.
+	* src/kwset.h: Include <stddef.h>, for size_t, so that this
+	include file doesn't require other files to be included first.
+
+	grep: minor cleanups for Galil speedups
+	* src/kwset.c: Update citations.
+	Include stdbool.h.
+	(kwsincr, kwsprep): Clarify by using C99 decls after statements.
+	(kwsprep): Clarify by using MIN.  Avoid a couple of buffer copies
+	when !TRANS.
+	(bmexec): Use bool for boolean.  Prefer "continue;" to ";".
+
+2014-04-07  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: use the Galil rule for Boyer-Moore algorithm in KWSet
+	The Boyer-Moore algorithm is O(m*n), which means it may be much
+	slower than the DFA.  Its Galil rule variant is O(n) and increases
+	efficiency in the typical case; it skips sections that are known
+	to match and does not compare more than once for a position in the text.
+	To use the Galil rule, look for the delta2 shift at each position
+	from the trie instead of the 'mind2' value.
+	* src/kwset.c (struct kwset): Replace member 'mind2' with 'shift'.
+	(kwsprep): Look for the delta2 shift.
+	(bmexec): Use it.
+
+2014-04-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: cleanup DFA superset optimization
+	* src/dfa.c (dfa_charclass_index): New function, with body of
+	old dfa_charclass but with an extra parameter D.
+	(charclass_index): Reimplement in terms of dfa_charclass_index.
+	(dfahint): Clarify.
+	(dfasuperset): Do not assign to 'dfa' static variable.  Instead,
+	use a local, and use the new dfa_charclass_index function.  This
+	doesn't fix any bugs, but it's clearer.  Initialize a few more
+	members, to simplify dfafree.  Copy the charclasses with
+	just one memcpy call.  Don't assign nonnull to D->superset until
+	it's known to be valid; that's simpler.
+	(dfafree, dfaalloc): Simplify based on dfasuperset initializations.
+	* src/dfa.h (dfahint): Add comment.
+	* src/dfasearch.c (EGexecute): Simplify use of memchr.
+	Simplify by using memrchr.  Fix typo that could cause a buffer
+	read overrun.
+
+2014-04-06  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: optimization with the superset of DFA
+	The superset of a DFA is like the DFA, except that for speed
+	ANYCHAR, MBCSET and BACKREF are replaced by (CSET full bits) STAR,
+	and mb_cur_max is 1.  For example, for 'a\(b\)c\1':
+	  original: a b CAT c CAT BACKREF CAT
+	  superset: a b CAT c CAT CSET STAR CAT  (The CSET has all bits set.)
+	If a string matches a DFA, it matches the DFA's superset.
+	Using the superset to filter can dramatically improve performance,
+	over 200x in some cases.  See <http://bugs.gnu.org/16966>.
+	* src/dfa.c (struct dfa): New member 'superset'.
+	(dfahint, dfasuperset): New functions.
+	(dfacomp): Create and analyze the superset.
+	(dfafree): Free only non-NULL items.
+	(dfaalloc): Initialize superset member.
+	(dfaoptimize): If succeed in optimization for UTF-8 locale, don't use
+	the superset.
+	* src/dfa.h (dfahint): New decl.
+	* src/dfasearch.c (EGexecute): Use dfahint.
+
+2014-04-06  Jim Meyering  <meyering@fb.com>
+
+	build: avoid OS X 10.8.5 build failure due to lack of static_assert
+	* bootstrap.conf (gnulib_modules): Add assert-h, to accommodate the
+	new use of static_assert on systems lacking support for that construct.
+	Without this change, compilation of dfa.c failed on OS X 10.8.5 with
+	gcc-4.9.0 20140324.  We should be using gnulib's assert-h module,
+	regardless, for its nominal improved portability, since grep includes
+	assert.h and uses assert.
+
+2014-04-05  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: fix performance bug with regex in line-by-line mode
+	* src/dfasearch.c (EGexecute): Match line-by-line with regex.
+
+2014-04-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: minor improvements to previous patch
+	* src/dfa.c (MAX): New macro.
+	(match_anychar, match_mb_charset, transit_state_consume_1char):
+	Use it to simplify assignments.
+	(SKIP_REMAINS_MB_IF_INITIAL_STATE): Prefer != 0 for unsigned.
+	(free_mbdata): Omit an unnecessary 'free'.
+
+2014-04-05  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: reuse multibyte DFA buffers in non-UTF8 locales
+	* src/dfa.c (struct dfa): New members 'mblen_buf', 'nmblen_buf',
+	'inputwcs', 'ninputwcs', 'mb_follows' and 'mb_match_lens'.
+	(mblen_buf, inputwcs): Remove static vars.
+	(SKIP_REMAINS_MB_IF_INITIAL_STATE, match_anychar, match_mb_charset)
+	(transit_state_consume_1char, transit_state, prepare_wc_buf):
+	Use new members instead of global variables.
+	(check_matching_with_multibyte_ops): Use new members
+	instead of new allocation.
+	(dfaexec): Initialize new members.
+	(free_mbdata): Free new members.
+
+2014-04-05  Paul Eggert  <eggert@penguin.cs.ucla.edu>
+
+	grep: simplify dfa.c by having it not include mbsupport.h directly
+	* src/mbsupport.h: Remove.
+	* src/Makefile.am (noinst_HEADERS): Remove mbsupport.h.
+	* src/dfa.c, src/grep.c, src/search.h: Don't include mbsupport.h.
+	* src/dfa.c: Include wchar.h and wctype.h unconditionally, as
+	this simplifies the use of dfa.c in grep, and it does no harm
+	in gawk.
+	(setlocale, static_assert): Remove gawk-specific hacks, as
+	gawk now does these itself.
+	(struct dfa, dfambcache, mbs_to_wchar)
+	(is_valid_unibyte_character, setbit_wc, using_utf8, FETCH_WC)
+	(addtok_wc, add_utf8_anychar, atom, state_index, epsclosure)
+	(dfaanalyze, dfastate, prepare_wc_buf, dfaoptimize, dfafree, dfamust):
+	* src/dfasearch.c (EGexecute):
+	* src/grep.c (main):
+	* src/searchutils.c (mbtoupper):
+	Assume MBS_SUPPORT.
+
+2014-04-01  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: avoid re-building a state built previously
+	* src/dfa.c (dfaexec): Avoid to re-build a state built previously.
+
+2014-03-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: improve port to freestanding DJGPP
+	Suggested by Aharon Robbins (Bug#17056).
+	* src/dfa.c (setlocale) [!LC_ALL]: Return NULL, not "C",
+	reverting part of a recent change.
+	(using_simple_locale): Return true if setlocale returns null.
+
+2014-03-28  Jim Meyering  <meyering@fb.com>
+
+	tests: placate "make syntax-check" re compare arg ordering
+	* tests/euc-mb: Reverse order of arguments to compare.
+	Be consistent in ordering compare arguments: expected followed
+	by actual.
+
+2014-03-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: avoid an indirection and port wint_t usage
+	* src/dfa.c (struct dfa): Put mbrtowc_cache directly into struct dfa
+	rather than having a pointer; this saves a malloc and an indirection.
+	All uses changed.
+	(dfambcache): Port to hosts where wint_t * can't be cast to wchar_t *.
+
+2014-03-28  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: take mbrtowc_cache into new member of struct dfa
+	When struct dfa more than one are used at the same time, mbrtowc cache
+	may be conflict.  So, take mbrtowc_cache into new member of struct dfa,
+	and define each mbrtowc cache for them.
+
+	* src/dfa.c (struct dfa): New member `mbrtowc_cache'.
+	(dfambcache): Rename from build_mbrtowc_cache.  Add dependency on struct dfa.
+	(mbs_to_wchar): Add dependency on struct dfa.
+	(FETCH_WC): Use it.
+	(prepare_wc_buf): Use it.  Add dependency on struct dfa.
+	(dfacomp): Call it.
+	(dfafree): Release it.
+
+2014-03-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: cache results of mbrtowc for speed
+	Idea suggested by Norihiro Tanaka in Bug#16842.
+	* src/dfa.c (mbrtowc_cache): New static var.
+	(build_mbrtowc_cache, mbs_to_wchar): New functions.
+	(FETCH_WC) [MBS_SUPPORT]: Speed up by using mbs_to_wchar
+	instead of mbrtowc and wctob.
+	(FETCH_WC) [!MBS_SUPPORT]: Rewrite in terms of old FETCH macro.
+	(FETCH): Remove; no longer used.
+	(lex): Simplify by avoiding the need for FETCH.
+	(prepare_wc_buf) [MBS_SUPPORT]: Speed up by using mbs_to_wchar.
+	Simplify the loop.
+	(dfacomp): Initialize the cache.
+
+2014-03-27  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: perform the kwset-helping DFA match in narrower range
+	When kwsexec gives us the offset of a potential match, we compute
+	line begin/end and then run the DFA matcher to see if there really
+	is a match on that line.  When the beginning of the line, BEG, is
+	not on a multibyte character boundary, advance BEG until it on such
+	a boundary, before running the DFA search.
+	* src/dfasearch.c (EGexecute): As above.  Add a comment.
+	* tests/euc-mb: Add a test case that exercises this code.
+	This addresses http://debbugs.gnu.org/17095.
+
+2014-03-26  Jim Meyering  <meyering@fb.com>
+
+	maint: fix "make dist"
+	* src/Makefile.am (egrep fgrep): Specify egrep.sh via
+	$(srcdir)/egrep.sh, so non-srcdir builds work once again.
+
+2014-03-26  Paul Eggert  <eggert@penguin.cs.ucla.edu>
+
+	dfa: improve port to freestanding DJGPP
+	* src/dfa.c (setlocale) [!LC_ALL]: Return "C", not NULL (Bug#17056).
+	(using_simple_locale): Store setlocale result in a ptr-to-const.
+
+	egrep, fgrep: improve diagnostics from shell scripts
+	This should fix Bug#17098.
+	* src/Makefile.am (EXTRA_DIST): Add egrep.sh.
+	(egrep fgrep): Depend on egrep.sh and Makefile.
+	Build from new file egrep.sh, as this makes the build process
+	easier to follow.  Arrange for $0 to look nicer in subgrep.
+	* src/egrep.sh: New file.
+
+2014-03-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: avoid undefined behavior
+	* src/dfa.c (FETCH_WC, addtok_wc): Don't rely on undefined behavior
+	when converting an out-of-range value to 'int'.
+	(FETCH_WC, prepare_wc_buf): Don't rely on conversion state after
+	mbrtowc returns a special value, as it's undefined for (size_t) -1.
+	(prepare_wc_buf): Simplify test for valid character.
+
+	grep: fix and simplify grep -iF optimization
+	* src/grep.c (check_any_alphabets): Remove.
+	(fgrep_to_grep_pattern): Fix problems when mbrtowc returns -1 or -2.
+	Simplify a bit.
+	(main): Don't bother optimizing 'grep -iF PAT' when PAT contains no
+	alphabetics; it's so rare it's not worth the complexity.
+
+2014-03-23  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: optimization for fgrep with changing the macher to grep macher.
+	fgrep macher is only use kwset engine.  However, it's very slow for
+	case-insensitive matching in multibyte locales.
+
+	And so, if the matcher is fgrep and case-insensitive and keys including
+	any alphabets, change it into grep matcher by escape of keys.  OTOH, if
+	keys include no alphabet, turn match_icase flag off.
+
+	I prepare following string to measure the performance.
+
+	    yes $(printf '%078dm' 0)| head -1000000 | tr 0 a > in
+	    A=`printf '\xef\xbc\xa1'`   # FULLWIDTH LATIN CAPITAL LETTER A
+
+	I run three tests with this patch (best-of-5 trials):
+
+	    env LC_ALL=en_US.UTF-8 time -p src/fgrep -i "$A" in
+	        real 8.54       user 7.13       sys 1.16
+
+	Back out that commit (temporarily), recompile, and rerun the experiment:
+
+	    env LC_ALL=en_US.UTF-8 time -p src/fgrep -i "$A" in
+	        real 0.07       user 0.02       sys 0.05
+
+	* src/fgrep.c (Gcompile) New function.
+	* src/main.c (check_any_alphabets) New function.
+	(fgrep_to_grep_pattern) New function.
+	(main) Use them.
+
+2014-03-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	egrep, fgrep: go back to shell scripts
+	Although egrep's and fgrep's switch from shell scripts to
+	executables may have made sense in 2005, it complicated
+	maintenance and recently has caused subtle performance bugs.
+	Go back to the old way of doing things, as it's simpler and more
+	easily separated from the mainstream implementation.  This should
+	be good enough nowadays, as POSIX has withdrawn egrep/fgrep and
+	portable applications should be using -E/-F anyway.
+	* po/POTFILES.in: Remove src/egrep.c, src/fgrep.c, src/main.c.
+	* src/Makefile.am (bin_PROGRAMS): Remove egrep, fgrep.
+	(bin_SCRIPTS): New macro.
+	(grep_SOURCES): Move searchutils.c, dfa.c, dfasearch.c, kwset.c,
+	kwsearch.c, pcresearch.c here from libgrep_a_SOURCES.
+	(egrep_SOURCES, fgrep_SOURCES, noinst_LIBRARIES, libgrep_a_SOURCES):
+	Remove.
+	(LDADD): Remove libgrep.a.
+	(egrep, fgrep): New rules.
+	(CLEANFILES): New macro.
+	* src/grep.c: Rename from src/main.c.
+	(usage, setmatcher, main):
+	Simplify, since there's now just one executable.
+	(Gcompile, Ecompile, Acompile, GAcompile, PAcompile, matchers):
+	Move here from the (removed) src/grep.c.
+	(compile_fp_t, execute_fp_t, struct matcher, matchers):
+	Move here from src/grep.h, as they no longer need to be public.
+	(struct matcher.name): Avoid one level of indirection/relocation.
+	(do_execute, main): Fix a performance bug when it was compiled
+	as 'fgrep', due to confusion about which matcher was which.
+	(main): Fix a performance bug with -P, likewise.
+	* src/grep.h (before_options, after_options): Remove.
+	* src/egrep.c, src/fgrep.c, src/grep.c: Remove.
+
+	dfa: port to freestanding DJGPP (Bug#17056)
+	* src/dfa.c (setlocale) [!LC_ALL]: Define a dummy.
+
+2014-03-16  Jim Meyering  <meyering@fb.com>
+
+	tests: avoid false-positive failure on some AMD CPUs
+	* tests/mb-non-UTF8-performance: Avoid false-positive failure
+	when run on certain AMD processors.
+
+2014-03-10  Jim Meyering  <meyering@fb.com>
+
+	tests: make a performance-measuring test less system-sensitive
+	Andreas Schwab reported in http://debbugs.gnu.org/16941
+	that this test would timeout and fail on m68k-suse-linux.
+	Rather than testing absolute duration with a limit tuned
+	to today's hardware, compare performance of grep with LC_ALL=C
+	against that same command using LC_ALL=ja_JP.eucJP.
+	* tests/init.cfg (require_hi_res_time_): New function.
+	* tests/mb-non-UTF8-performance: Rewrite to use it:
+	record absolute duration D of the first (normally much faster)
+	command, and set a timeout of 8*D for the command running in
+	an affected locale.
+
+2014-03-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: pacify 'make dist'
+	* src/dfa.c (parse_bracket_exp): Reindent with spaces.
+	* src/dfa.h (case_folded_counterparts): Prefix decl with 'extern'.
+	* src/main.c: Don't include assert.h.
+
+2014-03-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	fgrep: fix case-fold incompatibility with plain 'grep'
+	fgrep converted to lowercase, whereas the regex code converted
+	to uppercase.  The resulting behaviors don't agree in offbeat
+	cases like Greek sigmas and Turkish Is.  Fix this by changing
+	fgrep to agree with the regex code.
+	* src/kwsearch.c (Fcompile, Fexecute):
+	* src/searchutils.c (kwsinit, mbtoupper):
+	Convert to uppercase, not to lowercase, for compatibility with
+	plain 'grep'.
+	* src/search.h, src/searchutils.c (mbtoupper):
+	Rename from mbtolower, since it now converts to uppercase.
+	All uses changed.
+	* tests/case-fold-titlecase: Add tests for this.
+
+	grep: fix case-fold mismatches between DFA and regex
+	The DFA code and the regex code didn't use the same semantics for
+	case-folding.  The regex code says that the data char d matches
+	the pattern char p if uc (d) == uc (p).  POSIX is unclear in this
+	area; the simplest fix for now is to change the DFA code to agree
+	with the regex code.  See <http://bugs.gnu.org/16919>.
+	* src/dfa.c (static_assert): New macro, if not already defined.
+	(setbit_case_fold_c): Assume MB_CUR_MAX is 1 and that case_fold
+	is nonzero; all callers changed.
+	(setbit_case_fold_c, parse_bracket_exp, lex, atom):
+	Case-fold like the regex code does.
+	(lonesome_lower): New constant.
+	(case_folded_counterparts): New function.
+	(parse_bracket_exp): Prefer plain setbit when case-folding is
+	not needed.
+	* src/dfa.h (CASE_FOLDED_BUFSIZE): New constant.
+	(case_folded_counterparts): New function decl.
+	* src/main.c (trivial_case_ignore): Case-fold like the regex code does.
+	(main): Try to improve comment re trivial_case_ignore.
+	* tests/case-fold-titlecase: Add lots more test cases.
+
+2014-03-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+	doc: do not overpromise --ignore-case's behavior
+	* NEWS: Omit vague statement about titlecase that could be
+	misinterpreted, and is more trouble than it's worth.
+	* doc/grep.texi: Add @documentencoding.  Fix copyright range to
+	use endash not hyphen.
+	(Matching Control): Do not overpromise what --ignore-case will do.
+	Give examples of corner cases where the documentation does not
+	specify behavior.
+
+2014-03-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: remove differences from gnulib regex code
+	These don't seem to be needed with GCC 4.8.2, and are making
+	maintenance harder.  If we need to disable warnings with older
+	compilers, we can add pragmas to the gnulib versions.  See
+	<http://bugs.gnu.org/16911#24>.
+	* gl/lib/regcomp.c.diff, gl/lib/regex_internal.c.diff:
+	* gl/lib/regex_internal.h.diff, gl/lib/regexec.c.diff:
+	Remove.
+	* cfg.mk (exclude_file_name_regexp--sc_prohibit_tab_based_indentation):
+	Don't mention gl/* files.
+
+2014-03-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix comment
+	* src/main.c (trivial_case_ignore): Fix comment typo.
+
+2014-03-03  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: avoid to add same character to a bracket expression
+	* src/main.c (trivial_ignore_case): Only when uppercase and/or
+	lowercase is different from original character, add it to new pattern.
+
+2014-03-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix some unlikely bugs in trivial_case_ignore
+	* src/main.c (MBRTOWC, WCRTOMB): Reformat as per usual GNU style.
+	(trivial_case_ignore): Don't overrun buffer in the unusual case
+	when a character has both lowercase and uppercase counterparts.
+	Don't rely on undefined behavior when assigning out-of-range value
+	to an 'int'.  Simplify by avoiding unnecessary buffer copies.
+	Work even with shift encodings, by using mbsinit to
+	disable the optimization if we are not in the initial state
+	when we replace B by [BCD].
+
+2014-03-02  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: revert removal of trivial_case_ignore
+	Revive trivial_case_ignore function in order to be able to use kwset.
+
+	* src/main.c (MBRTOWC, WCRTOMB): New macros.
+	(trivial_case_ignore): New function.
+	(main): Use it.
+
+2014-03-02  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: optimization of bracket expression for non-UTF8 locales
+	* src/dfa.c (addtok): Replace an MBCSET with a CSET even in
+	non-UTF8 locales, and even when it has individual characters.
+
+2014-03-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: describe titlecase fix better
+	* NEWS: Document behavior on lowercase text too.
+	Suggested by Eric Blake in <http://bugs.gnu.org/16911#10>.
+	* doc/grep.texi (Matching Control): Specify behavior of -i
+	more precisely.
+
+2014-02-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: minor tuning for mb_case_map_apply
+	* src/kwsearch.c (mb_case_map_apply): Avoid unnecessary widening of
+	size_t to intmax_t.  Avoid unnecessary reinitialization of k.
+
+	grep: avoid 'inline' when it doesn't matter
+	These days, compilers generally do just fine without advice from
+	users about 'inline', and there's little need for 'static inline',
+	just as there's little need for 'register'.
+	* src/dfa.c (to_uchar):
+	* src/dosbuf.c (guess_type, undossify_input, dossified_pos):
+	* src/main.c (undossify_input):
+	No longer inline.
+	* src/search.h (mb_case_map_apply): Move from here ...
+	* src/kwsearch.c (mb_case_map_apply): ... to here, and
+	make it no longer 'inline'.
+
+	grep: fix bugs with -i and titlecase
+	* NEWS: Document this.
+	* src/dfa.c (setbit_wc): Simplify.
+	(setbit_c): Remove; no longer used.
+	(setbit_case_fold_c, parse_bracket_exp, atom):
+	Don't mishandle titlecase.  For 'atom', this removes the need for
+	the refactoring of Bug#16729.
+	(lex): Use the slower approach only for letters that have a
+	differing case.
+	* tests/case-fold-titlecase: New file.
+	* tests/Makefile.am (TESTS): Add it.
+
+	grep: remove lint
+	* src/main.c (MBRTOWC, WCRTOMB): Remove no-longer-used macros.
+
+2014-02-28  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: remove trivial_case_ignore
+	* src/main.c (trivial_case_ignore): Remove.
+	(main): Remove its use; this optimization is no longer needed.
+
+	grep: don't match line-by-line for case-insensitive with grep and awk
+	* src/main.c (matcher): Move decl up.
+	(do_execute): With the grep or awk matchers,
+	no need to match line by line.
+
+2014-02-27  Jim Meyering  <meyering@fb.com>
+
+	maint: dfa: pass NULL, not 0, as 2nd arg to setlocale
+	* src/dfa.c (using_simple_locale): Use NULL, not 0.
+
+2014-02-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/dfa.c (prednames): POSIX allows [[:xdigit:]] to match multibyte chars.
+
+	* src/dfa.c (parse_bracket_exp): Parenthesize.
+
+	grep: fix multiple bugs with bracket expressions
+	* NEWS: Document this.
+	* src/dfa.c (using_simple_locale): New function.
+	(parse_bracket_exp): Handle bracket expressions like [a-[.z.]]
+	correctly.  Don't assume that dfaexec handles expressions like
+	[^a-z] correctly, as they can match multiple characters in some
+	locales.
+	* tests/posix-bracket: New file.
+	* tests/Makefile.am (TESTS): Add it.
+
+2014-02-25  Stephane Chazelas  <stephane.chazelas@gmail.com>
+
+	align grep -Pw with grep -w
+	For the -w option, with -P, we used to look for the pattern surrounded by
+	word boundaries. That's different from what grep -w does and what the
+	documentation describes. Now align with grep -w and the documentation by
+	using PCRE look-behind and look-ahead operators to match the pattern if
+	it is not surrounded by word constituents.
+	* src/pcresearch.c (Pcompile): Use (?<!\w)(?:...)(?!\w) rather than
+	\b(?:...)\b.
+	* NEWS (Bug fixes): Mention it.
+	* tests/pcre-w: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	This complements the fix for http://debbugs.gnu.org/16865
+
+2014-02-24  Stephane Chazelas  <stephane.chazelas@gmail.com>
+
+	grep -P: fix it so backreferences now work with -w and -x
+	To implement -w and -x, we bracket the search term with parentheses.
+	However, that set of parentheses had the default semantics of
+	"capturing", i.e., creating a backreferenceable matched quantity.
+	Instead, use (?:...), to create a non-capturing group.
+	* src/pcresearch.c (Pcompile): Use (?:...) rather than (...).
+	* NEWS (Bug fixes): Mention it.
+	* tests/pcre-wx-backref: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	This addresses http://debbugs.gnu.org/16865
+
+2014-02-20  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.18
+	* NEWS: Record release date.
+
+	tests: test for the non-UTF8 multi-byte performance regression
+	Test for the just-fixed performance regression.
+	With a 100-200x differential, it is reasonable to expect that
+	a very slow system will be able to complete the designated
+	task in a few seconds, while with the bug, even a very fast
+	system would exceed the timeout.
+	* tests/mb-non-UTF8-performance: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	* tests/init.cfg (require_JP_EUC_locale_): New function.
+
+	grep -i: avoid a performance regression in multibyte non-UTF8 locales
+	* src/main.c: Include dfa.h.
+	(trivial_case_ignore): Perform this optimization only for UTF8 locales.
+	This rectifies a 100-200x performance regression in non-UTF8 multi-byte
+	locales like ja_JP.eucJP.  The regression was introduced by the 10x
+	UTF8/grep-i speedup, commit v2.16-4-g97318f5.
+	* NEWS (Bug fixes): Mention it.
+	Reported by Norihiro Tanaka in http://debbugs.gnu.org/16232#50
+
+	maint: give dfa.c's using_utf8 function external scope
+	* src/dfa.c (using_utf8): Remove "static inline".
+	* src/dfa.h (using_utf8): Declare it.
+	* src/searchutils.c (is_mb_middle): Use using_utf8 rather than
+	rolling our own.
+
+2014-02-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: test [^^-^] in unibyte locales
+	This is a bug in the current dfa.c, which was reintroduced by the
+	recent reversion from RRI.
+	* tests/unibyte-negated-circumflex: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	* tests/init.cfg (require_unibyte_locale): New function.
+
+	grep: fix bug with patterns like [^^-~] in unibyte locales
+	* NEWS: Document this.
+	* src/dfa.c (parse_bracket_exp): Escape patterns like [^^-~], or
+	Awk patterns like [\^-\]], so that they are not misinterpreted by
+	the system regex library.  Check for system regex failure due to
+	memory exhaustion.
+
+2014-02-17  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.17
+	* NEWS: Record release date.
+
+2014-02-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	revert "grep: DFA now uses rational ranges in unibyte locales"
+	The correct course of action for grep is to defer range interpretation
+	to regex, because otherwise you can get mismatches between regexes with
+	backreferences and those without.
+
+	For example, [A-Z]. will use RRI but ([A-Z])\1 won't, with the confusing
+	result that the first regex won't match a superset of the language
+	described by the second regex.
+
+	The source of the confusion is that, even though grep's dfa.c was changed
+	to use range checking instead of strcoll, that code is only invoked if
+	dfaexec is called with backref = NULL, and that never happens for grep!
+
+	In the end, all that's needed for RRI is compiling --with-included-regex,
+	and in that case the patch is almost a no-op.  Almost, because there
+	are corner cases that aren't handled correctly (e.g. [a-[.e.]], or
+	regular expressions that include a NUL character), but this can be
+	handled separately.
+
+	* NEWS: Revert paragraph introduced by commit v2.16-7-g1078b64.
+	* src/dfa.c (parse_bracket_exp): Revert back to regcomp/regexec.
+
+2014-02-16  Mike Frysinger  <vapier@gentoo.org>
+
+	maint: ignore configure.lineno
+	* .gitignore: Add configure.lineno.
+
+2014-02-11  Benno Schulenberg  <bensberg@justemail.net>
+
+	help: remove surplus newline
+	* src/main.c (usage): Remove inconsistent \n introduced by previous
+	patch.
+
+2014-02-10  Benno Schulenberg  <bensberg@justemail.net>
+
+	help: fix a line ending, and use the same word for similar things
+	* src/main.c (usage): Change a stray 'n' to a newline, and use
+	the word "display" for showing version info as for help text.
+
+2014-02-09  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	speed up mb-boundary-detection after each preliminary match
+	After each kwsexec or dfaexec match, we must determine whether
+	the tentative match falls in the middle of a multi-byte character.
+	That is what our is_mb_middle function does, but it was expensive,
+	even when most input consisted of single-byte characters.  The main
+	cost was for each call to mbrlen.  This change constructs and uses
+	a cache of the lengths returned by mbrlen for unibyte values.
+	The largest speed-up (3x to 7x, CPU-dependent) is when most
+	lines contain a match, yet few are printed, e.g., when using
+	grep -v common-pattern ... to filter out all but a few lines.
+
+	* src/search.h (build_mbclen_cache): Declare it.
+	* src/main.c: Include "search.h".
+	[MBS_SUPPORT] (main): Call build_mbclen_cache in a multibyte locale.
+	* src/searchutils.c [HAVE_LANGINFO_CODESET]: Include <langinfo.h>.
+	(mbclen_cache): New global.
+	(build_mbclen_cache): New function.
+	(is_mb_middle) [HAVE_LANGINFO_CODESET]: Use it.
+	* NEWS (Improvements): Mention it.
+
+2014-02-01  Jim Meyering  <meyering@fb.com>
+
+	maint: use to_uchar function rather than explicit casts
+	* src/system.h (to_uchar): Define function.
+	* src/kwsearch.c (Fexecute): Use to_uchar twice in place of casts.
+	* src/dfasearch.c (EGexecute): Likewise.
+	* src/main.c (prepend_args): Likewise.
+	* src/kwset.c (U): Define in terms of to_uchar.
+	* src/dfa.c (match_mb_charset): Use to_uchar, not an explicit cast.
+
+2014-01-27  Jim Meyering  <meyering@fb.com>
+
+	maint: remove vestiges of support for long-disabled --mmap option
+	This option was disabled in March of 2010, and began to elicit a
+	warning in January of 2012.  Its time has come.
+	* doc/grep.in.1: Remove mention.
+	* doc/grep.texi: Likewise.
+	* src/main.c (GROUP_SEPARATOR_OPTION, usage, MMAP_OPTION)
+	(long_options, main): Remove all traces.
+	* tests/Makefile.am (check_PROGRAMS): Remove mention of ignore-mmap.
+	* tests/ignore-mmap: Remove file.
+	* NEWS (Maintenance): Mention it.
+
+2014-01-26  Jim Meyering  <meyering@fb.com>
+
+	maint: move two local variable declarations
+	* src/dfasearch.c (kwsmusts): Move one declaration down to the point
+	of definition.  Move another into the sole scope where it is used.
+
+2014-01-26  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfasearch: skip kwset optimization when multi-byte+case-insensitive
+	Now that DFA searching works with multi-byte locales, the only remaining
+	reason to case-convert the searched input is the kwset optimization.
+	But multi-byte case-conversion is so expensive that it's not
+	worthwhile even to attempt that optimization.
+
+	* src/dfasearch.c (kwsmusts): Skip this function in ignore-case mode
+	when the locale is multi-byte.
+	(EGexecute): Now that this code need not handle multi-byte case-ignoring
+	matches, remove the expensive copy/case-conversion code.
+	With no case-converted buffer, there is no longer any need to call
+	mb_case_map_apply, so remove it and associated code.
+	(kwsincr_case): Remove function.  Now, every use of this function
+	is equivalent to a use of kwsincr.  Replace all uses.
+	* tests/turkish-eyes: Test all of -E, -F and -G.
+
+2014-01-25  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa: remove GREP-ifdef'd code in favor of code used by gawk
+	For many years, gawk and grep have used different #ifdef'd bits of
+	code relating to how the DFA matcher matches multibyte characters.
+	Remove the GREP-specific code in favor of the code gawk uses.  This
+	permits us to avoid still more cases in which grep must resort to
+	the expensive process of copying/case-converting each input line
+	before matching against a case-converted regexp.
+	* src/dfa.c (parse_bracket_exp, atom): As above.
+
+2014-01-25  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+
+2014-01-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: DFA now uses rational ranges in unibyte locales
+	Problem reported by Aharon Robbins in <http://bugs.gnu.org/16481>.
+	* NEWS:
+	* doc/grep.texi (Environment Variables)
+	(Character Classes and Bracket Expressions):
+	Document this.
+	* src/dfa.c (parse_bracket_exp): Treat unibyte locales like multibyte.
+
+2014-01-17  Aharon Robbins  <arnold@skeeve.com>
+
+	grep: add undocumented '-X gawk' and '-X posixawk' options
+	See <http://bugs.gnu.org/16481>.
+	* src/grep.c (GAcompile, PAcompile): New functions.
+	(const): Use them.
+
+2014-01-10  Pádraig Brady  <P@draigBrady.com>
+
+	tests: remove superfluous uses of printf
+	* tests/turkish-eyes: Remove unnecessary uses of printf.
+
+2014-01-09  Jim Meyering  <meyering@fb.com>
+
+	grep: make --ignore-case (-i) faster (sometimes 10x) in multibyte locales
+	These days, nearly everyone uses a multibyte locale, and grep is often
+	used with the --ignore-case (-i) option, but that option imposes a very
+	high cost in order to handle some unusual cases in just a few multibyte
+	locales.  This change gets most of the performance of using LC_ALL=C
+	without eliminating the ability to search for multibyte strings.
+
+	With the following example, I see an 11x speed-up with a 2.3GHz i7:
+	Generate a 10M-line file, with each line consisting of 40 'j's:
+
+	    yes jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj | head -10000000 > k
+
+	Time searching it for the simple/noexistent string "foobar",
+	first with this patch (best-of-5 trials):
+
+	    LC_ALL=en_US.UTF-8 env time src/grep -i foobar k
+	        1.10 real         1.03 user         0.07 sys
+
+	Back out that commit (temporarily), recompile, and rerun the experiment:
+
+	    git log -1 -p|patch -R -p1; make
+	    LC_ALL=en_US.UTF-8 env time src/grep -i foobar k
+	        12.50 real        12.41 user         0.08 sys
+
+	The trick is to realize that for some search strings, it is easy
+	to convert to an equivalent one that is handled much more efficiently.
+	E.g., convert this command:
+
+	  grep -i foobar k
+
+	to this:
+
+	  grep '[fF][oO][oO][bB][aA][rR]' k
+
+	That allows the matcher to search in buffer mode, rather than having to
+	extract/case-convert/search each line separately.  Currently, we perform
+	this conversion only when search strings contain neither '\' nor '['.
+	See the comments for more detail.
+
+	* src/main.c (trivial_case_ignore): New function.
+	(main): When possible, transform the regexp so we can drop the -i.
+	* tests/turkish-eyes: New file.
+	* tests/Makefile.am (TESTS): Use it.
+	* NEWS (Improvements): Mention it.
+
+2014-01-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: port Solaris 10 /bin/sh patch back to GNU/Linux
+	Problem reported by Jim Meyering.
+	* tests/bre, tests/ere, tests/spencer1-locale:
+	Prefer re_shell, not re_shell_.
+	* tests/init.sh (re_shell): New var, which is exported instead of
+	re_shell_.
+
+	Port to Solaris 10 /bin/sh.
+	Problem reported by Dagobert Michelsen in <http://bugs.gnu.org/16380>.
+	* tests/bre, tests/ere, tests/spencer1-locale:
+	Prefer re_shell_ to SHELL, if re_shell_ is set.
+	* tests/init.sh (re_shell_): Export if it's used.
+
+2014-01-01  Jim Meyering  <meyering@fb.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.16
+	* NEWS: Record release date.
+
+	gnulib: update to latest, for maint.mk fix
+
+	maint: update copyright dates for 2014
+	Do that by running "make update-copyright".
+
+	gnulib: update to latest
+
+2013-12-31  Jim Meyering  <meyering@fb.com>
+
+	pcre: use PCRE_NO_UTF8_CHECK properly
+	In order to obtain the behavior we want, i.e., to disable
+	error-on-invalid-UTF-in-input, apply this PCRE option in
+	pcre_exec, not when compiling.
+	* src/pcresearch.c (Pexecute): Use PCRE_NO_UTF8_CHECK here, ...
+	(Pcompile): ...rather than here.
+	* tests/pcre-invalid-utf8-input: Adjust test case to test for this.
+
+2013-12-26  Jim Meyering  <meyering@fb.com>
+
+	maint: fix inconsistent spacing in expression
+	* src/main.c (prline): Fix inconsistent spacing in expression:
+	s/  / /.
+
+2013-12-26  behoffski  <behoffski@grouse.com.au>
+
+	maint: fix a garbled comment
+	* src/dfa.c (XNMALLOC, etc.): Fix garbled comment wording.
+
+2013-12-23  Jim Meyering  <meyering@fb.com>
+
+	maint: fix/improve a comment
+	* src/main.c (prline): Replace untrue FIXME comment with one
+	telling how the hard-to-reach code can be exercised.
+
+2013-12-21  Santiago Ruano Rincón  <santiago@debian.org>
+
+	pcre: tell grep -P to relax its stance on invalid multibyte chars
+	Do not exit-2 for invalid UTF-8 characters.  Just prior to this
+	change, this command would match no lines and fail like this:
+	  $ printf 'j\x82\nj\n'|LC_ALL=en_US.UTF-8 grep -P j|cat -A; echo $?
+	  grep: invalid UTF-8 byte sequence in input
+	  2
+	After this change, the same command matches both lines, and succeeds:
+	  jM-^B$
+	  j$
+	  0
+	* src/pcresearch.c (Pcompile): Use PCRE_NO_UTF8_CHECK, too, and
+	add a comment.
+	* tests/pcre-utf8: Add a test and a comment.
+	This change did not work with Debian unstable pcre-8.31-2
+	or with some 8.33 and 8.34-based versions, but does work with
+	Fedora 20's 8.33 and with a built-from-latest source library.
+	Based on a patch by Santiago Ruano Rincón.
+	See http://bugs.gnu.org/15758/
+
+2013-12-21  Jim Meyering  <meyering@fb.com>
+
+	tests: avoid FP failure due to exhausted memory
+	* tests/long-line-vs-2GiB-read: Don't declare the test "failed"
+	when running out of memory.  In that case, skip it.
+
+2013-12-18  Jim Meyering  <meyering@fb.com>
+
+	maint: add comments and split some long lines
+	* src/main.c (do_execute): Add a comment.
+	Split some lines longer than 80 bytes.
+
+	pcre: avoid a nominal leak
+	* src/pcresearch.c (Pcompile)[HAVE_LIBPCRE && !PCRE_STUDY_JIT_COMPILE]:
+	We would leak "re" if built with HAVE_LIBPCRE but without
+	PCRE_STUDY_JIT_COMPILE.  Move the free out one level.
+
+	maint: indent cpp directives to reflect nesting
+	* src/pcresearch.c: Insert spaces after a few "#", to indent
+	cpp directives to reflect their nesting.
+
+	grep: handle lines longer than INT_MAX on more systems
+	When trying to exercize some long-line-handling code, I ran these
+	commands:
+	  $ dd bs=1 seek=2G of=big < /dev/null; grep -l x big; echo $?
+	  grep: big: Invalid argument
+	  2
+	grep should not have issued that diagnostic, and it should
+	have exited with status 1, not 2.  What happened?
+	grep read the 2GiB of NULs, doubled its buffer size,
+	copied the 2GiB into the new 4GiB buffer, and proceeded
+	to call "read" with a byte-count argument of 2^32.
+	On at least Darwin 12.5.0, that makes read fail with EINVAL.
+	The solution is to use gnulib's safe_read wrapper.
+	* src/main.c: Include "safe-read.h"
+	(fillbuf): Use safe_read, rather than bare read.  The latter
+	cannot handle a read size of 2^32 on some systems.
+	* bootstrap.conf (gnulib_modules): Add safe-read.
+	* tests/long-line-vs-2GiB-read: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	* NEWS (Bug fixes): Mention it.
+
+2013-11-25  Jim Meyering  <meyering@fb.com>
+
+	tests: port to non-GNU sed
+	* tests/multibyte-white-space (utf8_space_characters): The generation
+	of test inputs relied on GNU sed's interpretation of \<, but that is
+	not portable, and caused spurious test failures.  Adjust the sed regexp
+	to work on all versions.
+	Reported by Karl Dubost in http://bugs.gnu.org/15953.
+
+2013-11-22  Jim Meyering  <meyering@fb.com>
+
+	maint: minor cleanup: xmalloc+strcpy -> xmemdup
+	* src/main.c (main): Replace an xmalloc+strcpy combination
+	with an equivalent use of xmemdup.
+
+2013-11-21  Jim Meyering  <meyering@fb.com>
+	    Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: avoid undefined behavior of "1 << 31"
+	* src/dfa.c (charclass): Change type from "int" to "unsigned int".
+	(tstbit): Rather than shifting "1" left to form a mask, shift the
+	LHS bits the right and use "1" as the mask.  Also, return bool, rather
+	than "int".
+	(setbit, clrbit, dfastate): Don't shift "1" (aka (int)1) left by 31 bits.
+	Instead, use "1U" as the operand, to avoid undefined behavior.
+	Spotted by gcc's new -fsanitize=undefined.
+
+2013-11-02  Jim Meyering  <meyering@fb.com>
+
+	grep: fix regression with -P vs. invalid UTF-8 input
+	* src/pcresearch.c (Pexecute): Don't abort upon unexpected
+	PCRE-specific error code.  Explicitly handle PCRE_ERROR_BADUTF8,
+	and change the default to print a diagnostic including the unhandled
+	integer PCRE error code and exit with status 2.
+	* tests/pcre-invalid-utf8-input: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	* NEWS (Bug fixes): Mention it.
+	* THANKS: Update.
+	Reported by Dave Reisner in http://bugs.gnu.org/15758.
+
+	grep: fix regression involving \s and \S
+	Commit v2.14-40-g01ec90b made \s and \S work with multi-byte
+	characters, but it made it so any use like \s*, \s+, \s?, \s{3}
+	would malfunction in a multi-byte locale.
+	* src/dfa.c (lex): Also reset laststart.
+	* tests/backslash-s-and-repetition-operators: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	* NEWS (Bug fixes): Mention it.
+	* THANKS: Update.
+	Reported by Mirraz Mirraz in http://bugs.gnu.org/15773.
+
+2013-11-01  Jim Meyering  <meyering@fb.com>
+
+	maint: NEWS: document a release-related bug fix
+	* NEWS (Bug fixes): Add an entry for a fix pulled from gnulib.
+
+2013-10-26  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib submodule to latest
+	This pulls in a gnulib fix for maint.mk that ensures the procedure
+	described in README-release actually does what we want.  Before this
+	change, that procedure resulted in a grep-2.15 tarball that would
+	lead to a grep binary whose --version- reported version number was
+	2.14.51... rather than the expected 2.15.
+
+	maint: avoid automake deprecation warning re ACLOCAL_AMFLAGS
+	* Makefile.am (ACLOCAL_AMFLAGS): Don't use this deprecated variable.
+	* configure.ac (AC_CONFIG_MACRO_DIRS): Use this instead.
+	(AUTOMAKE_OPTIONS): Require automake-1.12.
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.15
+	* NEWS: Record release date.
+
+2013-10-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: port to AIX
+	Problem reported by Pavel Kharitonov in <http://bugs.gnu.org/15690#68>.
+	* src/Makefile.am (LDADD): Add $(LIBTHREAD).
+
+	build: avoid duplicate -funit-at-a-time etc. options
+	* configure.ac (WERROR_CFLAGS): Don't add -fdiagnostics-show-option
+	and -funit-at-a-time, as Gnulib does that for us now, and we're
+	merely piling on duplicats.
+
+2013-10-24  Jim Meyering  <meyering@fb.com>
+
+	tests: port more tests to bourne shells with hex-challenged printf
+	* tests/pcre-utf8: Convert the hex \xHH literals for the euro symbol
+	to octal \OOO.
+	* tests/turkish-I: Likewise for "I with dot".
+	* tests/turkish-I-without-dot: Likewise for another Turkish I: U+0131.
+
+	maint: clean up an ugly 'while' condition
+	* src/main.c (get_nondigit_option): Separate a slightly baroque
+	"while" expression into two separate statements, both inside the loop.
+
+2013-10-23  Jim Meyering  <meyering@fb.com>
+
+	tests: port to bourne shells whose printf doesn't grok hex
+	Use octal escapes, not hex, in printf(1) format strings,
+	and in one case, use $AWK's printf so we can continue
+	to use the table of hex values.
+	* tests/char-class-multibyte: Use printf octal escapes, not hex,
+	for portability to shells like dash and Solaris 10's /bin/sh.
+	* tests/backslash-s-vs-invalid-multitype: Likewise.
+	* tests/surrogate-pair: Likewise.
+	* tests/unibyte-bracket-expr: Count in decimal and convert to octal.
+	* tests/multibyte-white-space (hex_printf): New function.
+	Use it in place of printf so we can retain the table of hex digits
+	without hitting the limitation of some bourne shells.
+	Reported by Paul Eggert in http://bugs.gnu.org/15690#11
+
+2013-10-21  Jim Meyering  <meyering@fb.com>
+
+	gnulib: update to latest
+
+	maint: remove now-unused wcscoll module
+	* bootstrap.conf (gnulib_modules): Remove wcscoll; no longer used.
+
+2013-10-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: avoid chatter from Automake 1.14
+	* configure.ac (AM_INIT_AUTOMAKE): Add subdir-objects.
+
+	build: port shell pattern to Solaris 10
+	* configure.ac: Don't use unquoted '^' in a pattern, as this
+	breaks 'configure' on Solaris 10, whose /bin/sh complains about it,
+	which causes 'configure' to exit even before it finds a decent shell.
+	Unix 7th edition shell accepted '^' as an alias for '|'.
+
+	build: port to platforms that predefine _FORTIFY_SOURCE
+	Problem reported by Brenton Hoff (Bug#15663).
+	* configure.ac (_FORTIFY_SOURCE): Don't define if already defined.
+	This is what Emacs does.
+
+2013-10-20  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib submodule to latest
+
+2013-10-19  Jim Meyering  <meyering@fb.com>
+
+	tests: extend the multibyte-white-space test
+	* tests/multibyte-white-space (utf8_space_characters): Add more
+	single-byte whitespace characters.  Align RHS hex values and
+	make the sed substitution less rigid, to accommodate.
+	Also, ensure that grep '\S' exits with status 1.
+
+	maint: update bootstrap to latest from gnulib
+	* bootstrap: Update from gnulib.
+
+	maint: fix typo in NEWS
+	* NEWS: Fix/improve example commands in most recent entry.
+	The LC_ALL envvar setting goes before grep, not before printf.
+	Don't reference src/ in the second example command, and do specify
+	the locale.
+
+2013-10-09  Jim Meyering  <meyering@fb.com>
+
+	tests: add a test for better coverage of some tricky code
+	* tests/spencer1.tests: Add a non-range bracket expression representing the
+	same regexp, to cover the alternate code path, the one that does not require
+	a regcomp/exec call to interpret the regexp.
+
+2013-10-01  Jim Meyering  <meyering@fb.com>
+
+	tests: ensure neither \s nor \S matches an invalid multibyte character
+	* tests/backslash-S-vs-invalid-multitype: New file.
+	Prompted by the bug report from Roman at
+	http://savannah.gnu.org/bugs/?40009
+	* tests/Makefile.am (TESTS): Add it.
+
+	dfa: fix \s and \S to work for multibyte
+	* src/dfa.c (lex): In multibyte mode, we can't treat \s and \S as we do
+	in single-byte mode.  Map them to [[:space:]] and [^[:space:]] respectively,
+	to make the DFA matcher use the regex-matcher for this term.
+	* tests/multibyte-white-space: New file.  Test for the bug.
+	* tests/Makefile.am (TESTS): Add it.
+	This bug was introduced with the addition of DFA support
+	for \s and \S in commit v2.5.4-112-gf979ca0.
+
+2013-09-30  Jim Meyering  <meyering@fb.com>
+
+	maint: change all references: s/POSIX\.2/POSIX/
+	There is no longer any point in referring to POSIX.N.
+	POSIX is sufficient.
+	* doc/grep.in.1: As above.
+	* src/main.c (main): Likewise.
+	* tests/file: Likewise.
+	* tests/options: Likewise.
+	* ChangeLog: Likewise.
+	* NEWS: Likewise.
+	* cfg.mk: Update, to match changed NEWS.
+	Inspired by Glenn Golden's suggestion in http://bugs.gnu.org/15486
+
+2013-09-22  Jim Meyering  <meyering@fb.com>
+
+	dfa: remove dead disjunct
+	* src/dfa.c (parse_bracket_exp): Remove dead disjunct.
+	At that point, we know MB_CUR_MAX <= 1, so the test,
+	MB_CUR_MAX > 1 && ... is always false.  Remove the disjunct.
+
+	maint: dfa: improve comments and formatting
+	* src/dfa.c (add_utf8_anychar): Correct wording/alignment of a comment.
+	(dfaexec): Add curly braces around multi-line while statement within
+	a "then" block.
+	(ANYCHAR): Clarify comment: "." does not match an invalid UTF8 character.
+	(parse_bracket_exp) Improve comment.
+
+2013-09-08  Jim Meyering  <meyering@fb.com>
+
+	dfa: appease a static analyzer, and save 95 stack bytes
+	* src/dfa.c (MAX_BRACKET_STRING_LEN): Rename from BRACKET_BUFFER_SIZE
+	and decrease from 128 to 32.
+	(parse_bracket_exp): Add one byte more than MAX_BRACKET_STRING_LEN
+	to the length of "str" buffer, to avoid appearance that we may store
+	the trailing NUL beyond the end of buffer.  A string of length 32
+	or greater is rejected by earlier processing, so would never reach
+	this code.  Addresses http://bugs.gnu.org/15307
+
+2013-09-01  Corinna Vinschen  <vinschen@redhat.com>
+
+	fix Cygwin UTF-16 surrogate-pair handling with -i
+	grep -i would segfault on systems using UTF-16-based wchar_t (Cygwin)
+	when converting an input string containing certain 4-byte UTF-8
+	sequences to lower case.  The conversions to wchar_t and back to
+	a UTF-8 multibyte string did not take surrogate pairs into account.
+	* src/searchutils.c (mbtolower) [__CYGWIN__]: Detect and handle
+	surrogate pairs when converting.
+	* NEWS (Bug fixes): Mention it.
+	* tests/surrogate-pair: New test.
+	* tests/Makefile.am (TESTS): Add it.
+	Reported by: Jim Burwell
+
+2013-08-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: mention how to use the latest gnulib
+	* README-hacking: Steal some text from coreutils/README-hacking.
+
+2013-08-10  Jim Meyering  <meyering@fb.com>
+
+	build: update gnulib-related code
+	* gnulib: Update submodule to latest.
+	* bootstrap: Update from gnulib.
+	* gl/lib/regex_internal.h.diff: Update to reflect gnulib changes.
+	* bootstrap.conf: Partial sync from coreutils.
+
+2013-08-09  Jim Meyering  <meyering@fb.com>
+
+	tests: simplify and factor newest test
+	* tests/char-class-multibyte2: Simplify file names.
+	Factor out $e_acute, so that the grep argument representation
+	is ascii (though the value is still UTF8).
+
+	doc: NEWS: mention the DFA segfault fix
+	* NEWS (Bug fixes): List the DFA segfault fix.
+
+2013-07-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Redo comments and white space to better approach GNU style.
+
+2013-07-05  Paolo Bonzini  <bonzini@gnu.org>
+
+	tests: add testcase for previous change
+	* tests/Makefile.am (TESTS): add char-class-multibyte2.
+	* tests/char-class-multibyte2: New file.
+
+2013-07-05  Mike Haertel  <mike@ducky.net>
+
+	dfa: fix multibyte character in brackets with repetition
+	Let FOO stand for any multibyte (e.g. CJK character) in the regexp.
+	It turns out the following much simpler regexp:
+	        ([^.]*[FOO]){1,2}
+	is sufficient to cause the crash.
+
+	In the first step of its parsing, DFA transforms regexp from human
+	readable syntax into reverse-polish form.  For regexps of the form a{m,n}
+	repeat counts, it simply builds repeated copies of the representation
+	of a, with appropriate inserted CAT and QMARK operators.  For the above
+	example with a regexp of the form a{1,2} it would build:
+
+	        <RPN representation for a>
+	        <RPN representation for a>
+	        QMARK
+	        CAT
+
+	When building repeated copies of RPN representations, additional
+	copies of the RPN representations are made by calling a function
+	copytoks() with arguments consisting of the start position and
+	length of the original copy.
+
+	The problem is that the current code for copytoks() is simply
+	incorrect.  It operates by calling addtok() for each individual
+	token in the source range being copied.  But, in the particular
+	case that the token being added is MBCSET, addtok():
+
+	(1) incorrectly assumes that the character set being added to be added
+	    is the one most (addtok has no argument to indicate which cset is
+	    being added, so it just uses the latest one)
+
+	(2) attempts to do some token sequence expansion into more primitive
+	    operators so things like [FOO] are matched efficiently.
+
+	Both of these assumptions are incorrect in the case that addtok()
+	is being called from copytoks(): (1) is simply not true, and
+	(2) is redundant--the expansion has already been done token sequence
+	being copied, so there is no need to do the expansion again.
+
+	The correct function to add exactly one token, without further expansion,
+	is addtok_mb().  So here is my proposed fix, which is that copytoks()
+	should never call addtok(), but instead directly call addtok_mb()
+	(which is what addtok() eventually calls).
+
+	* src/dfa.c (copytoks): Rewrite using addtok_mb directly.
+
+2013-05-28  Jim Meyering  <meyering@fb.com>
+
+	maint: align backslashes consistently
+	* tests/Makefile.am: Most backslashes were aligned with TABs,
+	so adjust the few that used spaces to conform.
+
+	grep -F: avoid an infinite loop with invalid multi-byte search string
+	* src/kwsearch.c (Fexecute): Avoid an infinite loop when processing
+	a fixed (-F) multibyte search string that is an invalid byte sequence
+	in the current locale and that matches the bytes of the input twice
+	on a line.  Reported by Daisuke GOTO in
+	http://thread.gmane.org/gmane.comp.gnu.grep.bugs/4773
+	* tests/invalid-multibyte-infloop: New test.
+	* tests/Makefile.am (TESTS): Add it.
+	* NEWS (Bug fixes): Mention it.
+
+2013-04-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* cfg.mk (old_NEWS_hash): Update.
+
+	doc: document EREs like a{,10}
+	Problem reported by Eric Blake in
+	<http://lists.gnu.org/archive/html/bug-grep/2013-04/msg00005.html>.
+	* NEWS: Document the bug fix.
+	* doc/grep.in.1: Restore documentation for this feature, but mention
+	that it is a GNU extension.
+	* doc/grep.texi (Fundamental Structure): Mention that this feature
+	is a GNU extension.
+
+2013-04-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: make dfa.c closer to Gawk's
+	* src/dfa.c: Include <stddef.h>, not <sys/types.h>.
+	stddef.h is smaller and is all we need and is portable nowadays.
+	Include <wchar.h> and <wctype.h> only if MBS_SUPPORT.
+
+2013-01-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: make dfa.h standalone
+	Problem reported by Aharon Robbins in
+	<http://lists.gnu.org/archive/html/bug-grep/2013-01/msg00007.html>.
+	* src/dfa.c: Include dfa.h first, so that it's tested standalone.
+	No need to include <regex.h>, since we are in charge of dfa.h and
+	know that it includes <regex.h>.
+	* src/dfa.h: Include <regex.h> and <stddef.h>, so that it's standalone.
+
+2013-01-11  Stefano Lattarini  <stefano.lattarini@gmail.com>
+
+	build: update gettext version to 0.18.2
+	* configure.ac (AM_GNU_GETTEXT_VERSION): Update to 0.18.2.
+	This is necessary to have the gettext-provided m4 files to use
+	AC_PROG_MKDIR_P rather than AM_PROG_MKDIR_P.  This latter macro,
+	planned to disappear in Automake 1.14, has already been removed
+	in the development version of Automake, so that, without this
+	change, grep fails to bootstrap with bleeding-edge Automake.
+
+2013-01-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: update gnulib submodule to latest
+
+2013-01-11  Stefano Lattarini  <stefano.lattarini@gmail.com>
+
+	build: remove redundant use of $(INCLUDES)
+	* lib/Makefile.am (INCLUDES): Remove.  Automake automatically adds
+	$(srcdir) and $(top_builddir) to the C preprocessor search path.
+	INCLUDES is deprecated in Automake 1.13 (causing a runtime
+	warning), and will be removed in Automake 1.14.
+
+2013-01-04  Jim Meyering  <jim@meyering.net>
+
+	build: update gnulib submodule to latest
+
+	maint: update all copyright year number ranges
+	Run "make update-copyright".
+
+2012-11-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: normalize diagnostics
+	* src/pcresearch.c (Pcompile): Use similar format diagnostics
+	as elsewhere, and translate them.
+
+2012-11-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: diagnose read errors from -f dir, porting to Solaris
+	Problem reported by Dennis Clarke for Solaris 10 in
+	<http://lists.gnu.org/archive/html/bug-grep/2012-11/msg00009.html>.
+	* src/main.c (main): For -f F, diagnose any read errors
+	encountered when reading F.
+	* tests/Makefile.am (XFAIL_TESTS): Remove grep-dir.
+	* tests/grep-dir: Don't assume that directories cannot be read
+	via fread, as POSIX allows this and it can happen on Solaris.
+
+2012-11-09  Paolo Bonzini  <bonzini@gnu.org>
+
+	pcre: add PCRE-JIT support for grep
+	* NEWS: Document new feature.
+	* src/pcresearch.c [PCRE_STUDY_JIT_COMPILE] (jit_stack): New.
+	[PCRE_STUDY_JIT_COMPILE] (Pcompile): JIT-compile the regular expression
+	and allocate a stack for it.  Based on a patch from Zoltan Herczeg.
+	* THANKS: Add Zoltan to the list.
+
+2012-10-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	build: go back to AC_PROG_CC
+	* configure.ac: Go back to using AC_PROG_CC rather than AC_PROG_CC_STDC,
+	as the latter is obsolescent and the Autoconf bug involving the former
+	has been fixed.
+
+2012-10-24  Jim Meyering  <jim@meyering.net>
+
+	build: use AC_PROG_CC_STDC rather than AC_PROG_CC
+	* configure.ac: Use AC_PROG_CC_STDC rather than AC_PROG_CC,
+	to accommodate autoconf-2.69-37+.
+
+	build: update gnulib submodule to latest
+
+2012-10-23  Eric Blake  <eblake@redhat.com>
+
+	build: default to --enable-gcc-warnings in a git tree
+	Anyone building from cloned sources can be assumed to have a new
+	enough environment, such that enabling gcc warnings by default will
+	be useful.  Tarballs still default to no warnings, and the default
+	can still be overridden with --disable-gcc-warnings.
+	* configure.ac (gl_gcc_warnings): Set default based on environment.
+
+2012-10-03  Jim Meyering  <meyering@redhat.com>
+
+	maint: factor out STREQ definition
+	* src/main.c (STREQ): Remove definition.
+	* src/pcresearch.c: (STREQ): Likewise.
+	* src/system.h (STREQ): Define it here instead.
+
+	maint: correct syntax-check failures; adjust NEWS
+	* tests/pcre-utf8: Reverse order of compare arguments.
+	Remove all copyright year numbers except 2012.
+	Use skip_ "diagnostic...", rather than a bare "exit 77".
+	* NEWS: Start with a concise description of the bug.
+	* src/pcresearch.c (STREQ): Define, so that we can...
+	(Pcompile): use STREQ, not strcmp.
+
+2012-10-03  Paolo Bonzini  <bonzini@gnu.org>
+
+	tests: include UTF-8 testcases for grep -P
+	* tests/Makefile.am (TESTS): Add pcre-utf8.
+	* tests/pcre-utf8: New file.
+
+2012-10-03  Petr Pisar  <ppisar@redhat.com>
+
+	pcresearch: set UTF-8 flag correctly for UTF-8 locales
+	Otherwise, Unicode properties (\p{XXX}) do not work with characters
+	outside the 7-bit ASCII character set.
+
+	* src/pcresearch.c (Pcompile): Look for UTF-8 locales and set PCRE_UTF8
+	if one is found.
+
+2012-10-03  Jaroslav Å karvada  <jskarvad@redhat.com>
+
+	doc: fix a formatting bug in grep.1 template
+	* doc/grep.in.1: Insert .TP before the paragraph describing
+	--dereference-recursive (-R).
+
+2012-10-03  Jim Meyering  <meyering@redhat.com>
+
+	maint: placate gcc's -Wjump-misses-init warning
+	* src/kwsearch.c (Fexecute): Replace a "goto" and "return" with
+	a simple return statement, eliminating the label, since that was
+	the sole use.
+	* src/dfasearch.c (EGexecute): Likewise.
+
+2012-09-01  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+
+2012-09-01  Eric Blake  <eblake@redhat.com>
+
+	build: work with new glibc when not optimizing
+	Starting with glibc 2.15, the system headers refuse to compile
+	unconditional use of FORTIFY_SOURCE if optimization is disabled
+	but -Werror is in effect.
+
+	* configure.ac (FORTIFY_SOURCE): Make conditional.
+
+2012-08-19  Jim Meyering  <meyering@redhat.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.14
+	* NEWS: Record release date.
+
+2012-08-07  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib and bootstrap
+
+	tests: test for bug with -i and ^$ in a multi-byte locale
+	* tests/empty-line-mb: New file.
+	* tests/Makefile.am (TESTS): Add it.
+
+	grep -i '^$' in a multi-byte locale could report a false match
+	* src/dfasearch.c (EGexecute): Do not match the sentinel "newline"
+	that is appended to each buffer.
+	This bug may sound like a big deal (it certainly surprised me), but
+	realize that only the empty-line-matching regular expression '^$'
+	can trigger it, and then only when you add the unnecessary (and
+	arguably superfluous) -i, *and* run the command in a multi-byte
+	locale.  Using a multi-byte locale for such a regular expression
+	is also pointless, and hurts performance.
+	* NEWS (Bug fixes): Mention it.
+	Reported by Alexander Katassonov <katasso@gmx.de>
+
+2012-08-06  Jim Meyering  <meyering@redhat.com>
+
+	tests: fix a skip diagnostic that mentioned the wrong locale
+	* tests/init.cfg (require_tr_utf8_locale_): s/en_US/tr_TR/
+
+2012-08-02  Jim Meyering  <meyering@redhat.com>
+
+	tests: skip failing test on FS/system that lack SEEK_HOLE support
+	* tests/big-hole: Test for SEEK_HOLE support.  If not available,
+	skip this test.  Hence, this test is now skipped on linux-3.5.0 with
+	ext4 or tmpfs.  The test runs (and passes) with at least btrfs, xfs,
+	or ocfs2.
+	* bootstrap.conf (gnulib_modules): Use the perl module.
+
+2012-07-30  Jim Meyering  <meyering@redhat.com>
+
+	maint: optimize long-line processing
+	* src/main.c (grep): Use memrchr rather than an open-coded loop,
+	reducing the cost of the replaced code by 50% when processing very
+	long lines.  If there were a rawmemrchr function (analogous to glibc's
+	rawmemchr), then the performance improvement would be even greater.
+
+2012-07-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: remove stat-size
+	* bootstrap.conf (gnulib_modules): Remove stat-size.
+	* src/main.c: Don't include stat-size.h; no longer needed.
+
+	grep: don't falsely report compressed text files as binary
+	* NEWS: Document this.
+	* src/main.c (file_is_binary): Remove the heuristic based on
+	st_blocks, as it does not work for compressed file systems.
+	On Solaris, it'd be cheap to test whether the file system is known
+	to be uncompressed, which allow the heuristic, but Solaris has
+	SEEK_HOLE so there's little point.
+
+	grep: don't falsely report tiny text files as binary
+	* NEWS: Document this.
+	* src/main.c (file_is_binary): When we are already at apparent
+	EOF, skip the file-size check, as some servers use zero blocks
+	to store binary files.  Reported by Martin Carroll in
+	<http://lists.gnu.org/archive/html/bug-grep/2012-07/msg00016.html>.
+
+2012-07-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: document -r/-R in man page
+	* doc/grep.in.1: Document -r vs. -R.
+
+2012-07-21  Jim Meyering  <meyering@redhat.com>
+
+	tests: avoid false positive upon kernel OOM-kill
+	* tests/big-match (skip_diagnostic): Handle case of 139 (SIGKILL)
+	with no diagnostic.
+
+	build: update gnulib and bootstrap
+
+	maint: fix misspellings in old ChangeLog
+	* ChangeLog-2009: Fix typos.
+
+2012-07-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: fix ptrdiff/size_t clash
+	Reported by Jaroslav Å karvada in <http://savannah.gnu.org/bugs/?36883>.
+	* src/dfasearch.c (EGexecute): Use size_t, not ptrdiff_t, for lengths.
+	Use regoff_t to store re_match's output, and test it before converting
+	it to size_t.
+
+2012-07-06  Jim Meyering  <meyering@redhat.com>
+
+	maint: correct log typo, to reflect in generated ChangeLog
+	* Makefile.am (gen-ChangeLog): Use --amend, now that we must
+	make our first log correction.
+	* build-aux/git-log-fix: New file.
+
+2012-07-04  Jim Meyering  <meyering@redhat.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.13
+	* NEWS: Record release date.
+
+	build: update gnulib submodule, bootstrap, init.sh
+
+2012-06-17  Jim Meyering  <meyering@redhat.com>
+
+	tests: add another turkish-I-related test case
+	* tests/turkish-I-without-dot: Also exercise the case in which
+	the original string and the lower-case buffer have precisely
+	the same length (22 bytes here), yet internal offsets do differ.
+
+2012-06-16  Jim Meyering  <meyering@redhat.com>
+
+	grep -i: work also when converting to lower-case inflates byte count
+	Commit v2.12-16-g7aa698d addressed the case in which the lower-case
+	representation of an input byte occupies fewer bytes than the original.
+	However, even with commit v2.12-20-g074842d, grep -i would still
+	misbehave when converting a character to lower-case increased its
+	byte count.  The map-manipulation code assumed that the case conversion
+	could only shrink the byte count.  With the consideration that it may
+	also inflate it, the deltas recorded in the map array must be signed,
+	and we must account for the one-to-two-or-more mapping when the
+	original-to-lower-case conversion causes the byte count to increase.
+	* src/searchutils.c (mbtolower): When a lower-case character occupies
+	more than one byte, set its remaining map slots to zero.  Change the
+	type of the map to be signed, and compute the change in character
+	byte count as new_length - old_length.
+	* src/search.h: Include <stdint.h>, for decl of intmax_t.
+	(mb_case_map_apply): Adjust for signed increments:
+	each map entry is now signed.
+	(mb_len_map_t): Define type.  Thanks to Paul Eggert for noticing
+	in review that using a bare "char" as the base type would be wrong on
+	systems for which it is a signed type (as with gcc's -funsigned-char).
+	* src/kwsearch.c (Fcompile, Fexecute): Likewise.
+	* src/dfasearch.c (kwsincr_case, EGexecute): Likewise.
+	* tests/turkish-I-without-dot: New test.  Thanks to Paolo Bonzini
+	for the tip that in the tr_TR.utf8 locale, mapping "I" to lower case
+	increases the character's byte count.
+	* tests/Makefile.am (TESTS): Add it.
+	* tests/init.cfg (require_tr_utf8_locale_): New function.
+	* NEWS (Bug fixes): Expand the existing entry.
+
+2012-06-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: handle -i when chars differ in length but line does not
+	* src/searchutils.c (mbtolower): Return the map back to the caller
+	if any input character's length differs from the corresponding output
+	character's, not merely if the total string length differs.
+	Problem reported by Johannes Meixner in
+	<http://lists.gnu.org/archive/html/bug-grep/2012-06/msg00029.html>.
+
+2012-06-07  Jim Meyering  <meyering@redhat.com>
+
+	tests: extend coverage of dfa.c's match_mb_charset
+	Add a test case to increase test coverage of part of dfa.c (the DFA
+	matcher used by grep and gawk).  While thinking about removing the few
+	remaining uses of strncpy in dfa.c, I found that none of the existing
+	tests covered the 40+ lines of code at the end of match_mb_charset,
+	so constructed this test case to demonstrate that it's not dead code
+	* tests/dfa-coverage: New test, for improved coverage.
+	* tests/Makefile.am (TESTS): Add it.
+
+2012-06-05  Jim Meyering  <meyering@redhat.com>
+
+	build: fix a subtly twisted "make distcheck" failure
+	"make distcheck" would fail when, during a test build,
+	an attempt to overwrite the deliberately-write-protected
+	$(srcdir)/grep.pot file would fail.
+	* bootstrap.conf (bootstrap_epilogue): Don't let the existence of
+	a large sparse file in the build directory induce "make distcheck"
+	failure.  The existence of a large sparse test file named 8T-or-so
+	would make po/Makefile.in.in's use of grep (to search for "GNU grep"
+	as an indication that this is a GNU package) exit 2 without generating
+	any output, which made the first xgettext use --package-name=grep,
+	while that same search for "GNU grep" would succeed when run
+	from a pristine from-tarball build, thus making the second
+	xgettext invocation use --package-name='GNU grep'.
+	That mismatch:
+	-"Project-Id-Version: grep 2.12.18-1080\n"
+	+"Project-Id-Version: GNU grep 2.12.18-1080\n"
+	led to the attempt by Makefile.in.in's grep.pot-update rule to
+	overwrite ../../grep.pot in the read-only po/ source directory.
+
+2012-06-03  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule, bootstrap and init.sh
+	cfg.mk: Exempt dfa.c from the new no-strncpy test, for now.
+
+2012-06-02  Jim Meyering  <meyering@redhat.com>
+
+	grep: fix how -i works with a match containing the Turkish I-with-dot
+	Fix a long-standing problem in the way grep's -i interacts with
+	data whose byte count changes when we convert it to lower case.
+	For example, the UTF-8 Turkish I-with-dot (Ä°) occupies two bytes,
+	but its lower case analog, i, occupies just one byte.  The code
+	converts both search string and the haystack data to lower case,
+	and then searches for the modified string in the modified buffer.
+	The trouble arose when using a lowercase buffer <offset,length>
+	pair to manipulate the original (longer) buffer.
+
+	The solution is to change mbtolower to return additional information:
+	a malloc'd mapping vector.  With that, the caller maps the lowercase-
+	relative <offset,length> to numbers that refer to the original buffer.
+	This mapping is used only when lengths actually differ, so the cost
+	in general should be small.
+
+	* src/searchutils.c (mbtolower): Add the new map parameter.
+	* src/search.h (mb_case_map_apply): New function.
+	* src/kwsearch.c (Fexecute): Update mbtolower caller, and upon
+	success, apply the new map.
+	* src/dfasearch.c (EGexecute): Likewise.
+	* tests/Makefile.am (XFAIL_TESTS): Remove turkish-I from this list;
+	that test is no longer expected to fail.
+	* NEWS (Bug fixes): Mention it.
+	Reported by Ilya Basin in
+	http://thread.gmane.org/gmane.comp.gnu.grep.bugs/3413 and later
+	by Strahinja Kustudic in http://savannah.gnu.org/bugs/?36567
+
+2012-06-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: remove unnecessary "what-if-signal?" code
+	* src/main.c (fillbuf): Don't worry about EINTR when closing --
+	not possible, since we're not catching signals.
+
+2012-05-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: avoid nominal integer overflow
+	* src/dfa.c (add_utf8_anychar): Avoid signed integer overflow.
+	Although this works on all platforms we know about, strictly
+	speaking the behavior is undefined, and Sun C 5.8 warns about it.
+
+2012-05-15  Jim Meyering  <meyering@redhat.com>
+
+	maint: avoid nit-picky syntax-check test failure; tweak big-hole test
+	* NEWS: Restore deleted newline in "old" NEWS, to fix a syntax-check
+	test failure.
+	* tests/big-hole: Use awk, rather than a shell loop: saves 3000 lines
+	of verbose shell output in the .log file.
+
+2012-05-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: sparse files are now considered binary
+	* NEWS: Document this.
+	* doc/grep.texi (File and Directory Selection): Likewise.
+	* bootstrap.conf (gnulib_modules): Add stat-size.
+	* src/main.c: Include stat-size.h.
+	(usable_st_size): New function, mostly stolen from coreutils.
+	(fillbuf): Use it.
+	(file_is_binary): New function, which looks for holes too.
+	(grep): Use it.
+	* tests/Makefile.am (TESTS): Add big-hole.
+	* tests/big-hole: New file.
+
+2012-05-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: quote 'like this' or "like this", not `like this'
+	See <http://lists.gnu.org/archive/html/bug-grep/2012-01/msg00125.html>.
+	* ChangeLog-2009, HACKING, NEWS, README-hacking, cfg.mk, configure.ac:
+	* lib/colorize-w32.c, m4/pcre.m4:
+	* src/Makefile.am, src/dfa.c, src/dosbuf.c, src/main.c:
+	* tests/backref, tests/help-version, tests/tests:
+	In commentary, quote 'like this' or "like this" rather than
+	`like this' or ``like this''.
+	* cfg.mk (old_NEWS_hash): Update due to changed old NEWS.
+	* doc/grep.texi (General Output Control): Quote sample text
+	with @samp, not with `...'.
+	* src/main.c (usage):
+	* tests/help-version: Quote 'like this' rather than `like this'
+	in diagnostics.
+
+	exclude: process exclude and include directives in order
+	Also, change exclude and include directives so that they apply to
+	command-line arguments too.  This restores the pre-2.6 behavior,
+	and fixes a bug reported by Quentin Arce in
+	<http://lists.gnu.org/archive/html/bug-grep/2012-04/msg00056.html>.
+	* NEWS: Document this.
+	* src/main.c (included_patterns): Remove.  All uses removed.
+	(skipped_file): New function.
+	(grepdirent): New arg command_line; all callers changed.  This is
+	needed because non-command-line files can invoke fts_open, and
+	their directory entries need to be distinguished from top-level
+	directory entries.  Move code into the new skipped_file function.
+	(grepdesc): Check whether a command-line argument should be skipped.
+	(main): --include and --exclude options now share excluded_patterns
+	rather than having separate variables included_patterns and
+	excluded_patterns.
+	* tests/include-exclude: Add a test to detect the fixed bug.
+
+	build: update gnulib submodule to latest
+
+2012-04-30  Jim Meyering  <meyering@redhat.com>
+
+	cosmetic: binary operator goes *after* the newline, when split
+	* src/dfa.c (match_mb_charset): Join split lines.
+	(parse_bracket_exp): Move "||" from end of first split line
+	to the beginning of the continued line.
+	* src/dosbuf.c (dossified_pos): Likewise, but for "&&".
+
+	grep: -K is not an option: remove it from list
+	The presence of "K" in the short-option string meant that
+	an erroneous "grep -K ..." would fail with a bare Usage/Try...
+	message, without the usual "invalid option -- 'K'".  With this
+	removal, now grep prints the expected invalid option diagnostic.
+	* src/main.c (short_options): Remove "K".
+	Reported by Петр До�ычев in
+	http://thread.gmane.org/gmane.comp.gnu.grep.bugs/4488
+
+2012-04-29  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: small fixes to single-byte range computation
+	* src/dfa.c (parse_bracket_exp): Do not call regexec with an invalid
+	subject.  Move declarations before all statements.
+
+2012-04-27  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: do not use hard-locale
+	* bootstrap.conf (gnulib_modules): Remove hard-locale.
+	* src/dfa.c (hard_LC_COLLATE): Remove.
+	(dfaparse): Do not initialize it.
+	(parse_bracket_exp): Always go through system regex matcher to find
+	single byte characters matching a range.
+
+	drop support for Makefile.boot
+	* Makefile.am: Do not distribute README-boot and Makefile.boot.
+	* NEWS: Mention this change.
+	* README-alpha: Do not mention README-boot and Makefile.boot.
+	* Makefile.boot: Remove.
+	* README-boot: Remove.
+
+2012-04-27  Aharon Robbins  <arnold@skeeve.com>
+
+	dfa: do not use strcoll to match multibyte characters in ranges
+	This does not affect the behavior of grep, which always defers
+	to glibc or gnulib when matching ranges.
+	* src/dfa.c (match_mb_charset): Compare wc directly to the range
+	endpoints.
+
+	dfa: include stdbool.h explicitly
+	* src/dfa.c: Include stdbool.h explicitly
+
+2012-04-23  Jim Meyering  <meyering@redhat.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.12
+	* NEWS: Record release date.
+
+	build: update gnulib submodule to latest
+
+	tests: skip annoyingly long gnulib lock tests
+	* bootstrap.conf (avoided_gnulib_modules): Define.
+	(gnulib_tool_option_extras): Use it.
+
+2012-04-22  Jim Meyering  <meyering@redhat.com>
+
+	tests: avoid spurious quote-mismatch failure on OS/X
+	* tests/in-eq-out-infloop: Simplify expected error output, eliminating
+	expected quotes altogether, thus avoiding spurious OS/X-specific
+	failure due to mismatch of multi-byte vs. single-byte quotes.
+
+2012-04-17  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+	* bootstrap: Also update this file.
+
+2012-04-17  Jim Meyering  <meyering@redhat.com>
+
+	grep: fix --devices=ACTION (-D) so stdin is once again exempt
+	An oversight in the 2.11 changes made it so "echo x|grep x" would
+	fail for those who set GREP_OPTIONS=--devices=skip.
+
+	* src/main.c (grepdesc): Ignore skip-related options when reading
+	from standard input.
+	* tests/skip-device: New file.  Test for the above.
+	* tests/Makefile.am (TESTS): Add it.
+	* doc/grep.texi (File and Directory Selection): Clarify this point,
+	documenting the stdin exemption.
+	* NEWS (Bug fixes): Mention it, and add a few "[fixed in ...] notes.
+	Reported by Tino Keitel in http://bugs.debian.org/669084,
+	and forwarded to bug-grep by Aníbal Monsalve Salazar.
+
+2012-04-13  Jim Meyering  <meyering@redhat.com>
+
+	maint: dfa: correct bogus formatting
+	* src/dfa.c (transit_state, dfaexec): s/++ * VAR/++*VAR/
+
+	maint: dfa: add/improve comments
+	* src/dfa.c (transit_state_consume_1char): Note always-ignored
+	return value.
+	Fix typos: s/equivalent class/equivalence class/.
+
+	maint: dfa: avoid unnecessary uses of strcpy/strncpy
+	* src/dfa.c (icatalloc): Use memcpy, not strcpy, given the length.
+	(dfamust): Combine MALLOC+strcpy into cleaner xmemdup.
+	(parse_bracket_exp): Likewise, but replace a use of strncpy.
+
+	grep: handle symlinked directory loops as usual
+	* src/main.c (grepfile): Treat EMLINK just like ELOOP, for
+	systems like FreeBSD 9.0 on which we would otherwise report
+	"Too many links" rather than ignoring that type of failure.
+	E.g., "mkdir d; cd d; ln -s . a; grep -r ^" would print
+	grep: a: Too many links and would exit with status 2.
+	Now, it prints nothing and exits with status 1, as before.
+	Reported by Nelson H. F. Beebe.
+
+	tests: avoid spurious failure of the symlink test
+	* tests/symlink: Ignore spurious "Binary file d matches" on
+	systems for which reading from a directory actually succeeds.
+	Reported by Bruno Haible and Nelson Beebe.
+
+2012-04-09  Jim Meyering  <meyering@redhat.com>
+
+	tests: avoid syntax-check failure: reverse compare arguments
+	* tests/repetition-overflow: Fix reversed compare arguments.
+
+	build: update gnulib submodule to latest
+
+2012-03-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: report overflow for ERE a{1000000000}
+	* NEWS: Document this.
+	* src/dfa.c (MIN): New macro.
+	(lex): Lexically analyze the repeat-count operator once, not
+	twice; the double-scan complicated the code and made it harder to
+	understand and fix.  Adjust the repeat-count parsing so that it
+	better matches the behavior of the regex code, in three ways:
+	1. Diagnose too-large repeat counts rather than treating them as
+	literal characters.  2. Use RE_INVALID_INTERVAL_ORD, not
+	RE_NO_BK_BRACES, to decide whether to treat invalid-syntax {...}s
+	as literals.  3. Use the same wording for {...}-related
+	diagnostics that the regex code uses.
+	* tests/bre.tests, tests/ere.tests, tests/repetition-overflow:
+	Adjust to match new behavior, and add a few tests.
+	* cfg.mk (exclude_file_name_regexp--sc_error_message_uppercase):
+	New macro, since the diagnostics start with uppercase letters.
+
+2012-03-14  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: -r no longer follows symlinks; use fts
+	Change -r to follow only command-line symlinks, and by default to
+	read only devices named on the command line.  This is a simple
+	way to get a more-useful behavior when searching random
+	directories; the idea is to use 'find' if you want something fancy.
+	-R acts as before and gets a new alias --dereference-recursive.
+	The code now uses fts internally, so it is more robust and
+	faster with large hierarchies.
+	* .gitignore: Remove lib/savedir.c, lib/savedir.h.
+	* tests/symlink: New file
+	* Makefile.boot (LIB_OBJS_core): Remove isdir.o, savedir.o.
+	Perhaps other changes are needed too, but I'm not sure what
+	this makefile is for.
+	* NEWS: Document changes.
+	* doc/grep.texi (File and Directory Selection): Likewise.
+	* bootstrap.conf (gnulib_modules): Remove dirent, dirname, isdir, open.
+	Add fstatat, fts, openat-safer.
+	* lib/Makefile.am (libgreputils_a_SOURCES): Remove savedir.c, savedir.h.
+	* lib/savedir.c, lib/savedir.h: Remove.
+	* po/POTFILES.in: Add lib/openat-die.c.
+	* src/main.c: Include fcntl-safer.h, fts_.h.  Don't include
+	isdir.h, savedir.h.
+	(struct stats, stats_base): Remove.
+	(long_options, usage, main): Add --dereference-recursive and
+	implement -r vs -R.
+	(filename_prefix_len, fts_options): New static vars.
+	(basic_fts_options, READ_COMMAND_LINE_DEVICES): New constants.
+	(devices): Now defaults to READ_COMMAND_LINE_DEVICES.
+	(reset, grep): Now takes just struct stat rather than file name and
+	struct stats.  All callers changed.
+	(fillbuf): Now takes struct stat reather than struct stats.
+	All callers changed.
+	(grep): Don't worry about recursing too deeply; fts and grepdesc
+	handle this now.
+	(is_device_mode, grepdirent, grepdesc, grep_command_line_args):
+	New functions.
+	(grepfile): New args DIRDESC, FOLLOW, COMMAND_LINE.  Remove struct stats
+	arg.  All callers changed.  Use openat_safer rather than open.
+	Use desc == STDIN_FILENO to tell whether we're reading "-".
+	Don't worry about EINTR when closing -- not possible, since we're
+	not catching signals.
+	* tests/Makefile.am (TESTS): Add symlink.
+	* tests/symlink: New file.
+
+2012-03-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: port big-match to non-GNU dd
+	* tests/big-match: Don't assume GNU dd extension "bs=1M".
+
+	tests: test for bug with -r --exclude-dir and no file operand
+	* tests/include-exclude: Test for the bug and fix.
+
+2012-03-12  Allan McRae  <allan@archlinux.org>
+
+	grep: fix segfault with -r --exclude-dir and no file operand
+	* src/main.c (grepdir): Don't invoke excluded_file_name on NULL.
+	* NEWS (Bug fixes): Mention it.
+
+2012-03-09  Jim Meyering  <meyering@redhat.com>
+
+	tests: exercise two recently-fixed bugs
+	* tests/repetition-overflow: New test for bugs fixed by commit
+	v2.10-82-gcbbc1a4.
+	* tests/Makefile.am (TESTS): Add it.
+
+2012-03-03  Jim Meyering  <meyering@redhat.com>
+
+	maint: use an optimal-for-grep xz compression setting
+	* cfg.mk (XZ_OPT): Use -6e (determined empirically, see comments).
+	This sacrifices a meager 60 bytes of compressed tarball size for a
+	55-MiB decrease in the memory required during decompression.  I.e.,
+	using -9e would shave off only 60 bytes from the tar.xz file, yet
+	would force every decompression process to use 55 MiB more memory.
+
+	build: update gnulib submodule to latest
+
+2012-03-02  Jim Meyering  <meyering@redhat.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.11
+	* NEWS: Record release date.
+
+	tests: avoid failure when using Solaris 10's sed
+	* tests/reversed-range-endpoints: Use a simpler sed expression to
+	sanitize actual output, so it also works with Solaris 10's /bin/sed.
+
+2012-03-01  Jim Meyering  <meyering@redhat.com>
+
+	maint: manually correct formatting in dfa.c's cpp definitions
+	* src/dfa.c: Adjust formatting in cpp definitions.
+
+	maint: indent dfa.c
+	* src/dfa.c: Filter through indent like this:
+	HOME=. indent -Tsize_t -l79 --leave-preprocessor-space \
+	  --dont-format-comments --no-tabs < dfa.c > k && mv k dfa.c
+
+	doc: correct grep.1's descriptions of \w and \W (they omitted "_")
+	* doc/grep.in.1: Fix descriptions of \w and \W.
+	They did not mention "_".
+	* doc/grep.texi (The Backslash Character and Special Expressions):
+	[\w, \W]: List the "_" before the char class, not after: [_[:alnum:]],
+	for readability and to be consistent with the man page.
+
+2012-03-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: spelling fixes
+
+	grep: fix integer-overflow issues in main program
+	* NEWS: Document this.
+	* bootstrap.conf (gnulib_modules): Add inttypes, xstrtoimax.
+	Remove xstrtoumax.
+	* src/main.c: Include <inttypes.h>, for INTMAX_MAX, PRIdMAX.
+	(context_length_arg, prtext, grepbuf, grep, grepfile)
+	(get_nondigit_option, main):
+	Use intmax_t, not int, for line counts.
+	(context_length_arg, main): Silently ceiling line counts
+	to maximum value, since there's no practical difference between
+	doing that and using infinite-precision arithmetic.
+	(out_before, out_after, pending): Now intmax_t, not int.
+	(max_count, outleft): Now intmax_t, not off_t.
+	(prepend_args, prepend_default_options, main):
+	Use size_t, not int, for sizes.
+	(prepend_default_options): Check for int and size_t overflow.
+
+	grep: avoid mishandling of long lines
+	* src/pcresearch.c (Pexecute): Do not pass a line longer than
+	INT_MAX to pcre_exec, since its API does not permit that.
+
+	grep: remove no-longer-used setrlimit code
+	This code has been unused and obsolescent ever since the regex
+	code stopped using the stack for large regular expressions.
+	* src/main.c [HAVE_SETRLIMIT]: Do not include <sys/time.h> or
+	or <sys/resource.h>; no longer needed.
+	(set_rlimits): Remove.  All callers changed.
+
+	grep: fix some core dumps with long lines etc.
+	These problems mostly occur because the code attempts to stuff
+	sizes into int or into unsigned int; this doesn't work on most
+	64-bit hosts and the errors can lead to core dumps.
+	* NEWS: Document this.
+	* src/dfa.c (token): Typedef to ptrdiff_t, since the enum's
+	range could be as small as -128 .. 127 on practical hosts.
+	(position.index): Now size_t, not unsigned int.
+	(leaf_set.elems): Now size_t *, not unsigned int *.
+	(dfa_state.hash, struct mb_char_classes.nchars, .nch_classes)
+	(.nranges, .nequivs, .ncoll_elems, struct dfa.cindex, .calloc, .tindex)
+	(.talloc, .depth, .nleaves, .nregexps, .nmultibyte_prop, .nmbcsets):
+	(.mbcsets_alloc): Now size_t, not int.
+	(dfa_state.first_end): Now token, not int.
+	(state_num): New type.
+	(struct mb_char_classes.cset): Now ptrdiff_t, not int.
+	(struct dfa.utf8_anychar_classes): Now token[5], not int[5].
+	(struct dfa.sindex, .salloc, .tralloc): Now state_num, not int.
+	(struct dfa.trans, .realtrans, .fails): Now state_num **, not int **.
+	(struct dfa.newlines): Now state_num *, not int *.
+	(prtok): Don't assume 'token' is no wider than int.
+	(lexleft, parens, depth): Now size_t, not int.
+	(charclass_index, nsubtoks)
+	(parse_bracket_exp, addtok, copytoks, closure, insert, merge, delete)
+	(state_index, epsclosure, state_separate_contexts)
+	(dfaanalyze, dfastate, build_state, realloc_trans_if_necessary)
+	(transit_state_singlebyte, match_anychar, match_mb_charset)
+	(check_matching_with_multibyte_ops, transit_state_consume_1char)
+	(transit_state, dfaexec, free_mbdata, dfaoptimize, dfafree)
+	(freelist, enlist, addlists, inboth, dfamust):
+	Don't assume indexes fit in 'int'.
+	(lex): Avoid overflow in string-to-{hi,lo} conversions.
+	(dfaanalyze): Redo indexing so that it works with size_t values,
+	which cannot go negative.
+	* src/dfa.h (dfaexec): Count argument is now size_t *, not int *.
+	(dfastate): State numbers are now ptrdiff_t, not int.
+	* src/dfasearch.c: Include "intprops.h", for TYPE_MAXIMUM.
+	(kwset_exact_matches): Now size_t, not int.
+	(EGexecute): Don't assume indexes fit in 'int'.
+	Check for overflow before converting a ptrdiff_t to a regoff_t,
+	as regoff_t is narrower than ptrdiff_t in 64-bit glibc (contra POSIX).
+	Check for memory exhaustion in re_search rather than treating
+	it merely as failure to match; use xalloc_die () to report any error.
+	* src/kwset.c (struct trie.accepting): Now size_t, not unsigned int.
+	(struct kwset.words): Now ptrdiff_t, not int.
+	* src/kwset.h (struct kwsmatch.index): Now size_t, not int.
+
+	tests: test for problems with long matches
+	The new test is expensive, so add a category of expensive tests,
+	which are normally not run, and put the new test in this new
+	category.  The idea of having expensive tests is taken from coreutils.
+	* HACKING: Mention RUN_EXPENSIVE_TESTS and similar env vars.
+	* Makefile.am (check-expensive): New rule.
+	* tests/Makefile.am (TESTS): Add big-match.
+	* tests/init.cfg (expensive_): New function, from coreutils.
+	* tests/big-match: New file.
+
+2012-02-29  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: use gnulib _Noreturn rather than __attribute__ ((noreturn))
+	* src/grep.h (__attribute__): Remove.
+	* src/dfa.h (__attribute__): Likewise.
+	(dfaerror): Use noreturn rather than __attribute__ ((noreturn)).
+	* src/main.c (usage): Likewise.
+
+2012-02-26  Jim Meyering  <meyering@redhat.com>
+
+	build: update submodule, bootstrap, tests/init.sh from gnulib
+	* gl/lib/regcomp.c.diff: Adjust.
+	* bootstrap: Update from gnulib.
+	* tests/init.sh: Update from gnulib.
+
+2012-02-26  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: merge calls to SUCCEEDS_IN_CONTEXT
+	* src/dfa.c (state_index): use a single call to SUCCEEDS_IN_CONTEXT.
+
+	dfa: fix a subtle constraint encoding bug
+	* src/dfa.c (SUCCEEDS_IN_CONTEXT, PREV_NEWLINE_DEPENDENT,
+	PREV_LETTER_DEPENDENT): Rewrite to handle all 3*3=9 possible
+	combinations of previous and next character contexts.
+	(MATCHES_NEWLINE_CONTEXT, MATCHES_LETTER_CONTEXT): Remove.
+	(NO_CONSTRAINT, BEGLINE_CONSTRAINT, ENDLINE_CONSTRAINT,
+	BEGWORD_CONSTRAINT, ENDWORD_CONSTRAINT, LIMWORD_CONSTRAINT,
+	NOTLIMWORD_CONSTRAINT): Switch to new encoding.
+	* NEWS: Document resulting bugfix.
+	* tests/spencer1.tests: Add regression test.
+
+	dfa: do not use MATCHES_*_CONTEXT directly
+	* src/dfa.c (dfastate): Use SUCCEEDS_IN_CONTEXT.
+
+	dfa: change meaning of a state context
+	* src/dfa.c (MATCHES_NEWLINE_CONTEXT, MATCHES_LETTER_CONTEXT): New.
+	(state_separate_contexts): Remove second argument.
+	(state_index): Do not mask away CTX_NONE.
+	(dfaanalyze): Adjust call to state_index and state_separate_contexts.
+	(dfastate): Adjust calls to state_index and state_separate_contexts.
+
+2012-02-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: fix loop in epipe test
+	* tests/epipe: Don't loop forever if the bug is present.
+	Problem reported by Jaroslav Skarvada.
+
+2012-02-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: work portably even if SIGPIPE is ignored
+	* tests/epipe: Don't rely on "trap - PIPE"; that's not portable.
+	Problem reported by Eric Blake in
+	<http://lists.gnu.org/archive/html/bug-grep/2012-02/msg00017.html>.
+	Also, use "ls -al" rather than "echo", in case "echo" is done by a
+	buggy shell that ignores write errors.  And close grep's fd 3, as
+	a sanity check.
+
+2012-02-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	tests: work even if SIGPIPE is ignored
+	* tests/epipe: Do not infinite-loop if SIGPIPE is already ignored.
+	It could be that the invoker of 'make check' ignores SIGPIPE,
+	for example.
+
+2012-02-05  Jim Meyering  <meyering@redhat.com>
+
+	build: accommodate -Wshadow and -Werror=suggest-attribute=pure
+	* src/dfa.c (state_separate_contexts): Add _GL_ATTRIBUTE_PURE.
+	(dfaexec): Rename parameter, s/newline/allow_nl/, to avoid
+	shadowing the global.
+
+2012-02-05  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: refactor common context computations
+	* src/dfa.c (CTX_ANY, charclass_context, state_separate_contexts): New.
+	(dfaanalyze): Use state_separate_contexts.
+	(dfastate): Use charclass_context and state_separate_contexts.  Rename
+	prev_context to separate_contexts.
+
+	dfa: change newline/letter to a single context value
+	* src/dfa.c (MATCHES_NEWLINE_CONTEXT, MATCHES_LETTER_CONTEXT,
+	SUCCEEDS_IN_CONTEXT, ACCEPTS_IN_CONTEXT): Take a single context value
+	for prev and curr.
+	(struct dfa_state): Replace newline and letter with context.
+	(wchar_context): New.
+	(state_index): Replace newline and letter with context.  Compare
+	context values in the state struct.  Adjust calls to pass contexts.
+	(wants_newline): Replace with wanted_context.  Adjust calls to pass
+	contexts.
+	(dfastate): Replace wants_newline and wants_letter with wanted_context.
+	Adjust calls to pass contexts.
+	(build_state): Adjust calls to pass contexts.
+	(match_anychar, match_mb_charset, transit_state): Use wchar_context.
+	Adjust calls to pass contexts.
+
+2012-02-05  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: introduce contexts for the values in d->success
+	Also initialize all tables in a single place in dfasyntax.
+
+	* src/dfa.c (CTX_NONE, CTX_LETTER, CTX_NEWLINE, char_context): New.
+	(sbit, letters, newline): New.
+	(dfasyntax): Fill them.
+	(dfastate): Remove letters, newline, initialized.
+	(build_state): Use CTX_* constants.
+	(dfaexec): Remove sbit and sbit_init.
+
+2012-02-05  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: remove useless check
+	* src/dfa.c (state_index): There is nothing that is a newline *and*
+	a letter.  Remove redundant call to SUCCEEDS_IN_CONTEXT.
+
+2012-01-22  Jim Meyering  <meyering@redhat.com>
+
+	build: update bootstrap from gnulib and adapt
+	* bootstrap: Update from gnulib.
+	* tests/init.sh: Update from gnulib.
+	* bootstrap.conf (bootstrap_epilogue): Remove now-unnecessary,
+	snippet that edited gnulib-tests/gnulib.mk.
+	(gnulib_tool_option_extras): Add both --symlink and
+	--makefile-name=gnulib.mk.  Remove use of $bt.
+	* lib/Makefile.am: Initialize numerous automake variables so that
+	generated code in gnulib.mk may use += to append to them.
+
+	maint: convert `this' to 'this' quoting style in diagnostics
+	Now that gnulib's quote and quotearg modules use 'this' style,
+	change the few explicit uses in diagnostics to conform.
+	* src/egrep.c (after_options): Use 'this' style of quotes.
+	* src/fgrep.c (after_options): Likewise.
+	* src/grep.c (after_options): Likewise.
+	* src/main.c (usage): Likewise.
+
+	build: update gnulib to latest; adjust quoting in tests
+	* gnulib: Update.
+	* tests/in-eq-out-infloop: Convert expected diagnostics to match
+	new quoting.
+
+2012-01-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: document recent diagnostics-related changes
+	* NEWS: Document changes re diagnostics related to GREP_COLORS,
+	directory loops, -s, "write error".
+
+	grep: be quiet about GREP_COLORS syntax
+	* src/main.c (struct color_cap): fct now returns void,
+	since there's no longer need to use what it returns.
+	(color_cap_mt_fct, color_cap_rv_fct, color_cap_ne_fct): Return void.
+	(parse_grep_colors): Do not output diagnostics and then exit with
+	status 0.  Instead, ignore errors in GREP_COLORS.  This is more
+	consistent with programs that (e.g.) ignore errors in termcap entries,
+	and it's more internally-consistent as some GREP_COLORS errors
+	were ignored but not others.
+
+	grep: exit with nonzero status if directory loop
+	* src/main.c (grepdir): Exit with status 2 if a directory loop is
+	found, since the output might not be "right" (i.e., infinite...).
+
+	grep: suppress read errors if -s
+	* src/main.c (reset, grep, grepfile): Do not report an input error
+	if -s is given.
+
+	grep: don't say "write error" over and over
+	Problem reported by Travis Gummels in
+	<https://bugzilla.redhat.com/show_bug.cgi?id=741452>.
+	* src/main.c (write_error_seen): New static var.
+	(clean_up_stdout): New function.
+	(prline): Do not output 'write error' more than once; exit
+	after the first one.  Use the same wording for the diagnostic
+	that close_stdout uses.
+	(main): Clean up with clean_up_stdout, not close_stdout, so that
+	grep doesn't output multiple "write error" diagnostics.
+	* tests/Makefile.am (TESTS): Add epipe.
+	* tests/epipe: New file.
+
+2012-01-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: non-glibc word-constituent unibyte fix
+	* src/dfa.c (is_valid_unibyte_character): Fix typo that caused
+	this to incorrectly return 0 on unibyte non-glibc systems.
+	Problem reported by Aharon Robbins in
+	<http://lists.gnu.org/archive/html/bug-grep/2012-01/msg00084.html>.
+
+2012-01-04  Paul Eggert  <eggert@cs.ucla.edu>
+
+	doc: document empty pattern better
+	* doc/grep.texi (Top, Fundamental Structure, Usage):
+	Explain how grep deals with the empty pattern.
+	Problem spotted by Bernhard Voelker in
+	<http://lists.gnu.org/archive/html/bug-grep/2012-01/msg00050.html>.
+
+	grep: with no args, search "." only if command-line -r
+	* NEWS: Document this.
+	* doc/grep.texi (Environment Variables, grep Programs): Likewise.
+	* src/main.c (usage): Likewise.
+	(main): Implement this.
+	(prepend_default_options): Return a count of prepended options.
+	* tests/r-dot: Test the above.
+
+2012-01-03  Jim Meyering  <meyering@redhat.com>
+
+	tests: adjust test to match code, now that --mmap writes to stderr
+	* tests/ignore-mmap: Separate stdout and stderr; test both.
+
+	deprecate the --mmap option
+	* src/main.c (main): Deprecate the --mmap option: issue a warning
+	when it is used.
+	(usage): Change description.
+	* doc/grep.texi (Other Options): Document the new behavior.
+	* NEWS (Changes in behavior): Mention it.
+
+2012-01-03  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: fix incorrect comment
+	* src/dfa.c (dfastate): Fix comment for newline.
+
+	dfa: fix rebase conflict
+	* src/dfa.c (dfaanalyze): Fix reference to nalloc.
+
+	dfa: automatically resize position_sets
+	* src/dfa.c (insert, copy, merge): Resize arrays here.
+	(dfaanalyze): Do not track number of allocated elements here.
+	(dfastate): Allocate mbps with only one element.
+
+	dfa: change position_set nelem to size_t
+	* src/dfa.c (REALLOC_IF_NECESSARY): Disable assertion, to avoid
+	warnings from -Wtype-limits.
+	(position_set): Change nelem to a size_t.
+
+	dfa: move nalloc to position_set structure
+	* src/dfa.c (position_set): Add alloc.
+	(alloc_position_set): Initialize it.
+	(dfaanalyze): Use it instead of the nalloc array or nelem.
+
+	dfa: remove dead assignment
+	* src/dfa.c (transit_state): transit_state_consume_1char will clear follows,
+	do not do this ourselves.
+
+	dfa: introduce alloc_position_set
+	* src/dfa.c (alloc_position_set): New function, use it throughout.
+
+	dfa: use a more compact data type for grps
+	* src/dfa.c (leaf_set): New.
+	(dfastate): Use the smaller type, leaf_set, for grps.  Its prior type
+	contained an unused constraint field.
+
+	dfa: use MALLOC/REALLOC always
+	src/dfa.c (dfastate, enlist, dfamust): Use MALLOC and REALLOC.
+
+	dfa: remove unnecessary braces
+	* src/dfa.c (dfastate): Remove unnecessary braces.
+
+	dfa: x2nrealloc starting from a NULL pointer works
+	* src/dfa.c (parse_bracket_exp): Do not MALLOC mbcset parts the first time
+	they are encountered.  Initialize chars_al correctly.
+
+2012-01-03  Jim Meyering  <meyering@redhat.com>
+
+	build: avoid build failure with --enable-gcc-warnings and recent gcc
+	* lib/colorize-posix.c: Disable -Wsuggest-attribute=const, to avoid
+	warning about this empty init_colorize function.
+
+2012-01-03  Paolo Bonzini  <bonzini@gnu.org>
+
+	remove lib/ms/
+	* configure.ac: Create lib/colorize.c as a symbolic link.
+	* lib/colorize-posix.c: New name of lib/colorize-impl.c.
+	* lib/colorize-w32.c: New name of lib/ms/colorize-impl.c.
+	* lib/colorize.c: Delete.
+	* lib/Makefile.am (EXTRA_DIST): Adjust.
+	* .gitignore: Adjust.
+	* cfg.mk: Adjust syntax-check exclusions.
+
+	unify colorize.h headers
+	* lib/Makefile.am (EXTRA_DIST): Adjust.
+	* lib/colorize.h: Remove inline functions.
+	* lib/colorize-impl.c: Move them here as functions.
+	* lib/ms/colorize.h: Remove.
+	* src/Makefile.am (DEFAULT_HEADERS): Remove.
+
+2012-01-02  Paolo Bonzini  <bonzini@gnu.org>
+
+	colorize: use isatty module
+	* bootstrap.conf: Add isatty module.
+	* gnulib: Update to latest.
+	* lib/colorize.h: Remove argument from should_colorize.
+	* lib/ms/colorize.h: Likewise.
+	* lib/colorize-impl.c: Factor isatty call out of here...
+	* lib/ms/colorize-impl.c: ... and here...
+	* src/main.c: ... into here.
+
+2012-01-02  Jim Meyering  <meyering@redhat.com>
+
+	tests: avoid minor "make check" failure
+	* tests/r-dot: Make executable, to avoid triggering a failed
+	consistency test in "make check".
+
+2012-01-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: -r with no args now searches "."
+	This is a patch I've been meaning to put in for years.
+	When I added support for "grep -r", I forgot to have "grep -r PAT"
+	search the working directory by default, instead of searching
+	standard input (which makes no sense, even if stdin is a directory).
+	This is not an upward compatible change, since "grep -r PAT <file"
+	will no longer search standard input, but that's OK; nobody should
+	be using "grep -r" that way anyway.
+	* NEWS: Document this.
+	* doc/grep.texi (File and Directory Selection, grep Programs, Usage):
+	Likewise.
+	* src/main.c (usage): Likewise.
+	(grepdir): If DIR is null, search the working directory, but do
+	not prepend "./" to the file names.
+	(main): If recursing and no operands are given, search ".".
+	* tests/Makefile.am (TESTS): Add r-dot.
+	* tests/r-dot: New file.
+
+	grep: prefer fgets to printf, _ to gettext
+	* lib/colorize.h (print_end_colorize):
+	* lib/ms/colorize-impl.c (print_end_colorize):
+	Use fputs instead of printf.
+	* src/main.c (usage): Likewise.  Use _ instead of gettext.
+
+2012-01-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: check stdin like other files
+	* NEWS: Document this.
+	* src/main.c (grepfile): Revamp tests for input files so that
+	standard input is tested like other files.  For example, report
+	an error if standard input equals standard output.
+	Prefer open+fstat to stat+open if possible, as open+fstat is
+	usually a bit faster and avoids a race condition.
+	* tests/in-eq-out-infloop: Add tests for cases like
+	'grep pat <file >>file'.
+
+2012-01-01  Jim Meyering  <meyering@redhat.com>
+
+	maint: update all copyright year number ranges
+	Run "make update-copyright".
+
+2011-12-31  Paul Eggert  <eggert@cs.ucla.edu>
+
+	grep: lower-case function names
+	These names used to be macros, but they're functions now.
+	All callers changed.
+	* src/main.c (pr_sgr_start): Rename from PR_SGR_START.
+	(pr_sgr_end): Rename from PR_SGR_END.
+	(pr_sgr_start_if): Rename from PR_SGR_START_IF.
+	(pr_sgr_end_if): Rename from PR_SGR_END_IF.
+
+	ms: move Microsoft-specific stuff to lib/ms
+	* cfg.mk (exclude_file_name_regexp--sc_prohibit_strcmp)
+	(exclude_file_name_regexp--sc_require_config_h)
+	(exclude_file_name_regexp--sc_require_config_h_first):
+	New rules.
+	* lib/colorize.c, lib/colorize.h, lib/colorize-impl.c:
+	* lib/ms/colorize.h, lib/ms/colorize-impl.c: New files.
+	* configure.ac (GREP_SRC_INCLUDES): New macro.
+	* lib/Makefile.am (libgreputils_a_SOURCES): Add colorize.[ch].
+	(EXTRA_DIST): New macro.
+	* src/Makefile.am (DEFAULT_INCLUDES): New macro.
+	* src/main.c: Include colorize.h.
+	(PR_SGR_START, PR_SGR_END, PR_SGR_START_IF, PR_SGR_END_IF):
+	Now static functions, not macros.
+	(hstdout, norm_attr, w32_console_init, w32_sgr2attr)
+	(w32_clreol) [__MINGW32__]: Move to lib/ms/colorize-impl.c.
+	(pr_sgr_start, pr_sgr_end): Remove; callers changed to use new
+	print_start_colorize, print_end_colorize from colorize.h.
+	(init_colorize): Rename from w32_console_init and move to
+	colorize module; caller changed.
+	(should_colorize): Move to colorize module.
+
+	grep: do input==output check more like dir loop check
+	* src/main.c (grepfile): Just use SAME_INODE; don't bother
+	with SAME_REGULAR_FILE.  This works better on properly-working
+	POSIX hosts, since it handles the case where the file is changing
+	as we grep it.  It works worse on hosts that don't support st_ino
+	properly, but in practice this isn't that much of a problem here.
+	* src/system.h (same_file_attributes, SAME_REGULAR_FILE):
+	Remove; no longer needed.
+
+	build: update gnulib submodule to latest
+
+2011-12-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	maint: remove now-unused/obsolete files
+	* README.DOS: Remove file.
+	* m4/djgpp.m4: Likewise.
+	* .gitignore: Remove reference to m4/djgpp.m4.
+
+2011-12-28  Jim Meyering  <meyering@redhat.com>
+
+	maint: distribute ChangeLog-2009
+	* Makefile.am (EXTRA_DIST): Add ChangeLog-2009.
+	Spotted by Eli Zaretskii.
+
+2011-12-28  Jim Meyering  <meyering@redhat.com>
+
+	main.c: add some 'const' directives
+	* src/main.c (color_dict, fg_color, bg_color, cap): Declare const.
+
+	No semantic change.
+
+2011-12-28  Jim Meyering  <meyering@redhat.com>
+
+	main.c: correct indentation and formatting style
+	* src/main.c: Correct many formatting inconsistencies.
+	No semantic change.
+
+	avoid new syntax-check failures
+	* cfg.mk (old_NEWS_hash): Update, to accommodate old NEWS modification.
+	* src/main.c: Indent solely with spaces, never with TABs.
+	(should_colorize): Remove useless parens in #if directive.
+
+2011-12-28  Eli Zaretskii  <eliz@gnu.org>
+
+	Fix whitespace, indentation and documentation
+	* src/main.c (parse_grep_colors): Fix indentation.
+	(usage): Mention MS-Windows in help text for -U and -u options.
+
+	update NEWS for MS-Windows changes
+	* NEWS: Mention MS-Windows related bugfixes and enhancements.
+
+	Fix the test suite for MS-Windows.
+	* tests/include-exclude: Use --directories=skip, to avoid
+	gratuitous failures on systems that cannot grep directories.
+	* tests/reversed-range-endpoints: Don't reject program names with
+	leading directories and drive letters.
+	* tests/warn-char-classes: Likewise.
+
+	Support color highlighting on MS-Windows
+	* src/main.c (SGR_START, SGR_END, PR_SGR_FMT, PR_SGR_FMT_IF): Remove.
+	(PR_SGR_START, PR_SGR_START_IF): Replace with pr_sgr_start.
+	(PR_SGR_END, PR_SGR_END_IF): Replace with pr_sgr_end.
+	(pr_sgr_start, pr_sgr_end, should_colorize): New functions.
+	(w32_console_init, w32_sgr2attr, w32_clreol) [__MINGW32__]: New functions.
+	(main): Use should_colorize.  Invoke w32_console_init.
+
+2011-12-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	don't ignore errors when reading a directory
+	grep no longer silently suppresses errors when reading a directory
+	as if it were a text file.  For example, "grep x ." now reports a
+	read error on most systems; formerly, it ignored the error.
+	Problem reported as an aside by Bob Proulx (Bug#10355).
+	* NEWS: Document this.
+	* src/main.c (grep, grepfile): Implement this.  Simplify the code
+	considerably.
+	* src/system.h (is_EISDIR): Remove; no longer needed.
+
+	--include etc. now work on command-line args more consistently
+	--include and --exclude apply only to non-directories and
+	--exclude-dir applies only to directories.  "-" (standard input)
+	is never excluded, since it is not a file name.
+	This bug was discovered while fixing a read-directory bug (Bug#10355).
+	* NEWS: Document this.
+	* src/main.c (main): Implement this.
+	* tests/include-exclude: Test for it.
+
+2011-12-24  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+
+2011-12-12  Arnold D. Robbins  <arnold@skeeve.com>
+
+	doc: improve grep.texi
+	* doc/grep.texi: General editing for improved aesthetics.
+	Also fix a few problems.
+
+2011-12-12  Jim Meyering  <meyering@redhat.com>
+
+	build: use gnulib's iswctype wcscoll
+	* bootstrap.conf (gnulib_modules): Add iswctype and wcscoll.
+	* configure.ac: Remove explicit checks for those functions.
+	* src/mbsupport.h (MBS_SUPPORT): Define to 1 if not already defined.
+	Remove the conditional, now that we're guaranteed by gnulib to have
+	wcscoll and iswctype.
+	Suggested by Alan Hourihane in http://savannah.gnu.org/bugs/?34930
+
+	disable the new input==output guard for additional options
+	* src/main.c (grepfile): Do not reject input == output also
+	when using a few other options.
+	* tests/in-eq-out-infloop: Test these new cases.
+	* NEWS (Bug fixes): Mention it
+
+2011-12-11  Nicolas Vigier  <boklm@mars-attacks.org>
+
+	do not reject "grep -qr . > out"
+	The recent fix to avoid an infinite disk-filling loop, commit 5e20a38a,
+	introduced a minor regression.  If you use grep with -q and -r, and
+	redirect output to a file that will be traversed, then grep would
+	reject the command, even though it will generate no output.
+	In that case, there is no risk of an infinite loop.
+	* src/main.c (grepfile): Do not reject input == output when
+	using --quiet/--silent (-q).
+	Reported by J H Wilson in http://bugs.mageia.org/show_bug.cgi?id=3501
+	forwarded by Nicolas Vigier to https://savannah.gnu.org/bugs/?34917
+
+2011-11-29  Arnold Robbins  <arnold@skeeve.com>
+
+	dfa: do not call nl_langinfo in !MBS_SUPPORT mode
+	* src/dfa.c (using_utf8) [!MBS_SUPPORT]: Remove erroneous "defined"
+	in cpp test for MBS_SUPPORT.  Since commit a163349d, MBS_SUPPORT is 0/1.
+	This error caused trouble only in the !MBS_SUPPORT case.
+
+	dfa: avoid warning from deficient compiler in !MBS_SUPPORT mode
+	* src/dfa.c (setbit_wc) [!MBS_SUPPORT]: Add explicit "return false;"
+	after "abort ();", to avoid a warning from deficient compilers.
+
+2011-11-29  Jim Meyering  <meyering@redhat.com>
+
+	tests: use "compare exp out", not "compare out exp"
+	Likewise, when an empty file is expected, use "compare /dev/null out",
+	not "compare out /dev/null". I.e., specify the expected/desired contents
+	via the first file name.  Prompted by a suggestion from Bruno Haible
+	in http://thread.gmane.org/gmane.comp.gnu.grep.bugs/4020/focus=29154
+
+	Run these commands:
+
+	    git grep -l -E 'compare [^ ]+ exp' \
+	      |xargs perl -pi -e 's/(compare) (\S+) (exp\S*)/$1 $3 $2/'
+	    git grep -l -E 'compare [^ ]+ /dev/null' \
+	      |xargs perl -pi -e 's/(compare) (\S+) (\/dev\/null)/$1 $3 $2/'
+
+2011-11-29  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+
+2011-11-28  Jim Meyering  <meyering@redhat.com>
+
+	build: accommodate -Werror=suggest-attribute=pure
+	Now that we're using the latest manywarnings module from gnulib,
+	accommodate gcc's -Werror=suggest-attribute=pure option by marking
+	suggested functions with gnulib-defined _GL_ATTRIBUTE_PURE.
+	* src/kwset.c (hasevery): Mark function with pure attribute.
+	(bmexec): Likewise.
+	* src/dfa.c (nsubtoks, istrstr, find_pred, dfamusts): Likewise.
+	* configure.ac: Disable (for lib/) options that seem not to be worth
+	the trouble: -Wunsuffixed-float-constants and -Wformat-nonliteral.
+
+2011-11-21  Bruno Haible  <bruno@clisp.org>
+
+	build: fix "make check" error on OSF/1
+	* tests/Makefile.am (TESTS_ENVIRONMENT): Test the value of the variable
+	BASH_VERSION, not the literal ASH_VERSION.
+
+2011-11-21  Jim Meyering  <meyering@redhat.com>
+
+	portability: work consistently on *BSD systems
+	* src/dfa.c (is_valid_unibyte_character): Define.
+	(IS_WORD_CONSTITUENT): Use it here, to make grep work consistently
+	even on *BSD systems, which use different tables for ctype macros
+	like isalpha. http://thread.gmane.org/gmane.comp.gnu.grep.bugs/4022
+	With help from Bruno Haible.
+
+2011-11-20  Jim Meyering  <meyering@redhat.com>
+
+	maint: consistently use NULL, not 0, when comparing pointers
+	* src/dfa.c (dfaanalyze): Compare trans[s] with NULL, not 0.
+
+	maint: remove an avoidable #ifdef/#endif pair
+	* src/dfa.c (dfaanalyze): Remove avoidable #ifdef around "{".
+
+	tests: fix typo in last change
+	* tests/word-delim-multibyte: Use double quotes around $e_acute,
+	not single quotes.  Spotted by Bruno Haible.
+	This and the preceding change do not resolve the XPASS failure
+	on OpenBSD 4.9 after all.  See the explanation at
+	http://thread.gmane.org/gmane.comp.gnu.grep.bugs/4022
+
+	tests: avoid unwarranted test failure on *BSD-based systems
+	* tests/word-delim-multibyte (e_acute): Use a more portable
+	representation of e-acute.  Reported by Bruno Haible.
+
+2011-11-19  Jim Meyering  <meyering@redhat.com>
+
+	maint: accommodate -Wdeclaration-after-statement, but only in dfa.c,
+	and because doing so does not impact readability/maintainability.
+	This is solely to accommodate gawk users who are stuck with ancient gcc.
+	This is no excuse to change any other code in grep.
+	* src/dfa.c (dfaoptimize, parse_bracket_exp): Move declaration
+	to precede first statement in block.
+
+2011-11-16  Jim Meyering  <meyering@redhat.com>
+
+	maint: post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.10
+	* NEWS: Record release date.
+
+	build: update gnulib submodule to latest
+
+2011-11-13  Jim Meyering  <meyering@redhat.com>
+
+	maint: update bootstrap and init.sh from gnulib
+	* tests/init.sh: Update from gnulib.
+	* bootstrap: Likewise.
+
+2011-11-12  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib for exclude-test fixes
+
+	tests: make our "export" replacement efficient with modern shells
+	* tests/Makefile.am (TESTS_ENVIRONMENT): Use a trivial and efficient
+	implementation with a shell that supports "export var=val".
+	Use the sed-invoking replacement only when necessary.
+	Improved by Stefano Lattarini.
+
+	tests: make the replacement export function more robust
+	* tests/Makefile.am (sed_quote_value): Also quote single quotes.
+	Remove sed's -e options.  Not needed.
+
+2011-11-12  Bruno Haible  <bruno@clisp.org>
+
+	tests: fix test suite execution failure on OSF/1 5.1
+	* tests/Makefile.am (TESTS_ENVIRONMENT): Use a shell function to
+	ensure that we use only the portable form of the 'export' shell
+	built-in.
+
+	tests: don't assume that /bin/bash exists
+	* tests/fedora: Run using /bin/sh, not /bin/bash.
+
+	tests: avoid unwarranted failures due to SATAN's timeout
+	* tests/init.cfg (require_timeout_): Also ensure that
+	timeout exits with its child's exit status.
+
+	build: fix compilation error on MSVC 9 to due Pexecute() declaration
+	* src/pcresearch.c (WITHOUT_PCRE_NORETURN): Remove macro.
+	(Pexecute): Replace abort() call with code that does not trigger GCC
+	warnings.
+
+	tests: fix high-bit-range test failure on OSF/1 5.1
+	* tests/high-bit-range: Use octal escape instead of hexadecimal escape
+	sequence.
+
+2011-11-11  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib for solaris test fix
+
+2011-11-10  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+
+	maint: adjust the URL that will appear in the generated announcement
+	* cfg.mk (url_dir_list): Use this http://ftp.gnu.org/gnu/$(PACKAGE)
+	for the first link listed in the generated announcement.
+	announce-gen now provides the faster mirror link automatically.
+
+2011-11-06  Jim Meyering  <meyering@redhat.com>
+
+	build: stop distributing gzip'd releases;  xz is enough
+	* configure.ac (AM_INIT_AUTOMAKE): Add no-dist-gzip.
+	* NEWS (Build-related): Mention that we're dropping .tar.gz.
+
+	build: update gnulib submodule to latest
+
+2011-10-14  Stefano Lattarini  <stefano.lattarini@gmail.com>
+
+	distcheck: ensure dist-hook fails if syntax-check fails
+	* Makefile.am (run-syntax-check): Fix logic, to ensure that
+	the recipe of this target returns a non-zero exit status if
+	"make syntax-check" fails.
+
+2011-10-12  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+	This should fix a few portability problems, including one on HP-UX
+	and a test-float failure on PPC, reported by Andreas Metzler.
+
+2011-10-10  Stefano Lattarini  <stefano.lattarini@gmail.com>
+
+	gitignore: merge top-level and tests/ .gitignore files
+	* tests/.gitignore: Remove; what little remained of its
+	contents has been moved ...
+	* .gitignore: ... here.
+
+	tests: tiny simplification in TESTS_ENVIRONMENT definition
+	* tests/Makefile.am (TESTS_ENVIRONMENT): Remove redundant use of
+	`export'.
+
+2011-10-10  Stefano Lattarini  <stefano.lattarini@gmail.com>
+
+	tests: support development version of automake too
+	This change implements a more correct and idiomatic use of the
+	features of the Automake-provided 'parallel-tests' harness.
+	Moreover, this change is required in order for the testsuite to
+	continue to work with the new testsuite harness that is planned
+	to be introduced in Automake 1.12 (which, as of the writing date,
+	is still under development and in late alpha state).
+
+	* tests/Makefile.am (TESTS_ENVIRONMENT): The development version of
+	automake dos not support setting the interpreter delegated to run
+	the tests scripts in this variable; instead, use ...
+	(LOG_COMPILER): ... this variable.
+	* .gitignore: Ignore `.trs' files in directory `tests/'.
+	* build-aux/.gitignore: Ignore `test-driver' script.
+
+2011-10-03  Eli Zaretskii  <eliz@gnu.org>
+
+	dfa: don't mishandle high-bit bytes in a regexp with signed-char
+	This appears to arise only on systems for which "char" is signed.
+	* src/dfa.c (FETCH_WC, FETCH): Produce an unsigned value, rather
+	than a sign-extended one.  Fixes a bug on MS-Windows with compiling
+	patterns that include characters with the 8-th bit set.
+	(to_uchar): Define.  From coreutils.
+	Reported by David Millis <tvtronix@yahoo.com>.
+	See http://thread.gmane.org/gmane.comp.gnu.grep.bugs/3893
+	* NEWS (Bug fixes): Mention it.
+
+2011-09-16  Jim Meyering  <meyering@redhat.com>
+
+	maint: dfa: simplify multi-byte-related conditionals
+	* src/dfa.c (setbit_case_fold_c, parse_bracket_exp, lex):
+	(addtok_mb, dfaparse): Change each "MBS_SUPPORT && MB_CUR_MAX > 1"
+	test to just "MB_CUR_MAX > 1".
+	* src/dfasearch.c (kwsincr_case, EGexecute): Likewise.
+	* src/kwsearch.c (Fcompile, Fexecute): Likewise.
+	* src/searchutils.c (kwsinit): Likewise.
+	* src/dfa.c (parse_bracket_exp): Convert
+	"if (!MBS_SUPPORT || MB_CUR_MAX == 1)" to
+	"if (MB_CUR_MAX == 1)" and do this:
+	-      assert(!MBS_SUPPORT || MB_CUR_MAX == 1);
+	+      assert(MB_CUR_MAX == 1);
+
+	maint: dfa: simplify several expressions
+	* src/dfa.c (dfainit): Set d->mb_cur_max unconditionally, now
+	that MB_CUR_MAX is always usable.  With that, simplify all
+	"MBS_SUPPORT && d->mb_cur_max > 1" to simply "d->mb_cur_max > 1".
+	(dfastate, dfaexec, dfainit, dfafree): Simplify, removing each
+	now-unnecessary "MBS_SUPPORT &&".
+
+	maint: dfa: avoid in-function "#if MBS_SUPPORT" tests
+	* src/dfa.c (setbit_case_fold_c): Remove "#if MBS_SUPPORT" in favor
+	of simple "if (MBS_SUPPORT ...".
+	(dfaexec, addtok): Likewise.
+
+	maint: ensure that MB_CUR_MAX is defined even when !MBS_SUPPORT
+	* src/mbsupport.h [!MBS_SUPPORT] (MB_CUR_MAX): Define to 1.
+
+	build: fix compilation failure when MBS_SUPPORT is 0
+	* src/dfa.c (add_utf8_anychar): Always compile this function,
+	but when MBS_SUPPORT is 0, give it an empty body.
+	(prepare_wc_buf): Likewise.
+	[! MBS_SUPPORT] (setbit_wc): Define to always abort.
+
+	maint: dfa: simplify dfaoptimize
+	* src/dfa.c (dfaoptimize): Simplify.
+	(dfacomp): Remove now-redundant "if (MBS_SUPPORT)" guard,
+	since dfaoptimize does nothing if !MBS_SUPPORT.
+
+	maint: dfa: remove some #if MBS_SUPPORT guards
+	* src/dfa.c: Replace a few "#if MBS_SUPPORT" directives with
+	"if (MBS_SUPPORT)".  Remove some altogether.
+
+	maint: dfa: convert #if-MBS_SUPPORT (dfastate)
+	* src/dfa.c (dfastate): Use regular "if", not #if MBS_SUPPORT.
+
+	maint: dfa: convert #if-MBS_SUPPORT (dfastate)
+	* src/dfa.c (dfastate): Use regular "if", not #if MBS_SUPPORT.
+
+	maint: dfa: convert #if-MBS_SUPPORT (state_index)
+	* src/dfa.c (state_index): Use regular "if", not #if MBS_SUPPORT.
+
+	maint: dfa: convert #if-MBS_SUPPORT (dfaparse)
+	* src/dfa.c (dfaparse): Use regular "if", not #if MBS_SUPPORT.'
+
+	maint: dfa: convert #if-MBS_SUPPORT (copytoks)
+	* src/dfa.c (copytoks): Use regular "if", not #if MBS_SUPPORT.'
+
+	maint: dfa: convert #if-MBS_SUPPORT (lex)
+	* src/dfa.c (lex): Use regular "if", not #if MBS_SUPPORT.'
+
+	maint: dfa: convert #if-MBS_SUPPORT (parse_bracket_exp)
+	* src/dfa.c (parse_bracket_exp): Use regular "if", not #if MBS_SUPPORT.
+
+	maint: dfa: convert #if-MBS_SUPPORT (parse_bracket_exp)
+	* src/dfa.c (parse_bracket_exp): Use regular "if", not #if MBS_SUPPORT.
+
+	maint: dfa: convert #if-MBS_SUPPORT (parse_bracket_exp)
+	* src/dfa.c (parse_bracket_exp): Use regular "if", not #if MBS_SUPPORT.
+
+	maint: dfa: convert #if-MBS_SUPPORT (dfaexec)
+	* src/dfa.c (dfaexec): Use regular "if", not #if MBS_SUPPORT.
+
+	maint: dfa: convert #if-MBS_SUPPORT (dfaexec)
+	* src/dfa.c (dfaexec): Use regular "if", not #if MBS_SUPPORT.
+	Also add curly braces around multi-line if/else blocks.
+
+	maint: dfa: remove #if-MBS_SUPPORT (free_mbdata)
+	* src/dfa.c (free_mbdata): Remove the #if guard altogether.
+
+	maint: dfa: convert #if-MBS_SUPPORT (dfaoptimize, dfacomp)
+	* src/dfa.c (dfaoptimize, dfacomp): Use regular "if",
+	not #if MBS_SUPPORT.
+
+	maint: dfa: convert #if-MBS_SUPPORT (dfafree)
+	* src/dfa.c (dfafree): Use regular "if", not #if MBS_SUPPORT.
+
+	maint: dfa: convert #if-MBS_SUPPORT (parse_bracket_exp, part1)
+	* src/dfa.c (parse_bracket_exp): Remove in-function #if MBS_SUPPORT.
+
+	maint: remove #if-MBS_SUPPORT declaration guards
+	* src/search.h: Don't bother to #if-out declarations.
+
+	maint: convert #if-MBS_SUPPORT (EGexecute)
+	* src/dfasearch.c (EGexecute): Remove in-function #if MBS_SUPPORT.
+
+	maint: convert #if-MBS_SUPPORT (kwsincr_case)
+	* src/dfasearch.c (kwsincr_case): Remove in-function #if MBS_SUPPORT.
+	Move decl's down.
+
+	maint: convert #if-MBS_SUPPORT (Fcompile, etc.)
+	* src/kwsearch.c (Fcompile, Fexecute): Remove in-function #if MBS_SUPPORT.
+	(Fcompile): Rearrange some declarations.  No semantic change.
+
+	maint: convert #if-MBS_SUPPORT (kwsinit)
+	* src/searchutils.c (kwsinit): Remove in-function #if MBS_SUPPORT.
+
+	maint: dfa: remove case-guarding #if-MBS_SUPPORT
+	* src/dfa.c [DEBUG] (prtok): Remove now-useless #if-MBS_SUPPORT.
+
+2011-09-15  Jim Meyering  <meyering@redhat.com>
+
+	maint: remove #if MBS_SUPPORT around member declaration
+	* src/dfa.c (dfastate): Don't #ifdef-out "mbps" position_set member.
+
+	maint: dfa: remove #if MBS_SUPPORT around struct definition
+	* src/dfa.c (struct mb_char_classes): Don't #ifdef-out declarations.
+
+	build: avoid compilation failure when building without PCRE support
+	* src/pcresearch.c [!HAVE_LIBPCRE] (WITHOUT_PCRE_NORETURN): Define
+	to _Noreturn, not obsoleted-by-gnulib _GL_ATTRIBUTE_NORETURN.
+	Reported by Eric Blake.
+
+	tests: stop using skip_test_; use skip_ instead
+	* tests/init.cfg (skip_test_): Remove definition.  Use the improved
+	skip_ function from init.sh, now that it has the same feature.
+	* tests/euc-mb: s/skip_test_/skip_/
+	* tests/sjis-mb: Likewise.
+	* tests/fmbtest: Likewise.
+
+	tests: skip tests that require MBS support
+	* tests/init.cfg (require_compiled_in_MB_support): New function.
+	* tests/char-class-multibyte: Use it here, since this test cannot
+	succeed without MBS support.
+	* tests/equiv-classes: Likewise.
+	* tests/euc-mb: Likewise.
+	* tests/fgrep-infloop: Likewise.
+	* tests/init.cfg: Likewise.
+	* tests/prefix-of-multibyte: Likewise.
+	* tests/turkish-I: Likewise.
+	* tests/sjis-mb: Likewise.
+
+	tests: make fmbtest explain (to stderr, not log) why it is skipped
+	* tests/fmbtest: Use skip_ and fail_ to give better diagnostics.
+
+	maint: dfa: improve comments
+	* src/dfa.c (match_mb_charset, match_anychar): Improve comments.
+
+2011-09-14  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to newer
+
+	maint: correct indentation
+	* src/dfa.c (dfaexec): Reposition curly braces to match indentation style.
+	Remove useless comment.
+
+	maint: move declaration "down" to inner scope where it is used
+	* src/dfa.c (dfaexec): Move decl of local down into scope where used.
+
+2011-09-07  Jim Meyering  <meyering@redhat.com>
+
+	doc: use "file name" consistently in grep's --help output
+	* src/main.c (usage): Use "file name", not "filename" in descriptions
+	of --with-filename (-H), --no-filename (-h) and --label=LABEL.
+	Suggested by Sequoia McDowell.
+
+	bug: requires ru_RU.KOI8-R".  [bug introduced in grep-2.9]
+
+2011-08-31  Matthew Burgess  <matthew@linuxfromscratch.org>
+
+	tests: remove debug code that would cp to /t
+	* tests/unibyte-bracket-expr: Remove debug artifact introduced
+	by 2011-06-02 commit de5f7000, "tests: exercise a uni-byte [...]
+	bug: requires ru_RU.KOI8-R".  [bug introduced in grep-2.9]
+
+2011-08-20  Jim Meyering  <meyering@redhat.com>
+
+	build: use largefile module and update to latest gnulib
+	* configure.ac: Remove AC_SYS_LARGEFILE, subsumed by ...
+	* bootstrap.conf (gnulib_modules): ...this.  Use largefile module.
+	* gnulib: Update to latest.
+
+	maint: clean up and plug a leak-on-OOM
+	* src/dfa.c (icatalloc): Clean up; use xrealloc in place of malloc
+	and realloc; remove conditionals that are unnecessary, now that
+	failed allocation results in exit.
+	(enlist): Use xrealloc in place of realloc; remove conditional.
+	(comsubs): Avoid leak upon failed enlist call.
+	(dfamust): Use xmalloc in place of malloc.
+	Remove conditionals, now that icpyalloc and icatalloc never return NULL.
+
+	maint: use x2nrealloc, not xrealloc
+	* src/main.c (main): Use x2nrealloc, not xrealloc
+
+2011-07-24  Jim Meyering  <meyering@redhat.com>
+
+	tests: add a test to trigger the bug
+	* tests/Makefile.am (TESTS): Add it.
+	* tests/in-eq-out-infloop: Exercise the bug/fix.
+
+	exit 2 (rather than infloop) when an input file is also on stdout
+	This avoids a potential "infinite" disk-filling loop.
+	Reported in http://savannah.gnu.org/patch/?5316
+	and http://savannah.gnu.org/bugs/?17457.
+	* src/main.c: Include "quote.h".
+	(out_stat): New global.
+	(grepfile): Compare each regular file's dev/ino/etc.
+	with those from the file on stdout (if it too is regular).
+	(main): Set out_stat, if stdout is a regular file.
+	* src/system.h: Include "same-inode.h".
+	(same_file_attributes): Define.  From diffutils.
+	(SAME_REGULAR_FILE): Define.
+	* bootstrap.conf (gnulib_modules): Use quote, not quotearg.
+	Use same-inode.
+	* NEWS (Bug fixes): Mention it.
+
+2011-07-15  Reuben Thomas  <rrt@sc3d.org>
+
+	doc: improve documentation of character classes in the man page
+	* doc/grep.in.1: Reword documentation of character classes.
+
+2011-07-12  Jim Meyering  <meyering@redhat.com>
+
+	dfa: remove unnecessary inclusion of verify.h
+	* src/dfa.c: Don't include "verify.h".
+
+	dfa: simplify use of *ALLOC macros
+	* src/dfa.c (XNMALLOC, XCALLOC): Redefine without outer cast-to-(t *).
+	(CALLOC, MALLOC, REALLOC): Remove type "t" parameter and adjust callers.
+
+	dfa: change semantics of REALLOC_IF_NECESSARY's 3rd parameter
+	* src/dfa.c (REALLOC_IF_NECESSARY): Change meaning of 3rd param,
+	from "maximum index" to 1 greater than that: the required number
+	of *P-sized elements.  Note that only some of the uses of
+	REALLOC_IF_NECESSARY needed to be adjusted, the others had already
+	required an extra element.
+
+	dfa: rename REALLOC_IF_NECESSARY param/local for clarity
+	* src/dfa.c (REALLOC_IF_NECESSARY): Rename nalloc and new_nalloc
+	to n_alloc and new_n_alloc.
+
+	dfa: prepare for a semantic change in REALLOC_IF_NECESSARY
+	* src/dfa.c (REALLOC_IF_NECESSARY): Remove "t" (type) parameter.
+	Use (*p) instead.  Adjust all callers.
+
+	dfa: add braces to REALLOC_IF_NECESSARY definition
+	* src/dfa.c (REALLOC_IF_NECESSARY): Add curly braces; use TABs
+	to right-indent.
+
+2011-06-28  Paolo Bonzini  <bonzini@gnu.org>
+
+	doc: improve documentation of character classes
+	* doc/grep.texi (Character classes): Mention explicitly when
+	examples refer to the C locale, explain better the general
+	meaning of character classes.
+
+2011-06-28  Jim Meyering  <meyering@redhat.com>
+
+	dfa: fix the root cause of the heap overrun
+	dfa's "insert" function was supposed to be maintaining the position
+	list sorted on *decreasing* index, but since the 2009-12-09 "Speed
+	up insert" commit, 62458291, it was using code that assumed the data
+	were sorted on *increasing* index.  As such, sometimes it would no
+	longer merge constraints (not finding a match) and would append
+	entries that normally would have matched and been merged.  Those
+	erroneous append operations resulted in the heap overrun fixed by
+	2011-06-17 commit 0b91d692 by doubling the array size.
+	* src/dfa.c (insert): Fix the comparison.
+	(dfaanalyze): Now that that's fixed, revert commit 0b91d692,
+	allocating space for only d->nleaves entries, not double that.
+	As far as I can tell, this change has no effect other than
+	decreased memory usage, although it may improve performance
+	slightly, since the resulting list of positions is half as long
+	as it used to be.
+
+2011-06-28  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: use memcpy to copy position_sets
+	* src/dfa.c (copy): Use memcpy.
+
+	dfa: use copyset to copy charclasses
+	* src/dfa.c (add_utf8_anychar): Change memcpy to copyset.
+
+	gnulib: Update
+	Fixes mmap-anon.m4 conflict with fn_grep, reported by Rainer Orth.
+
+2011-06-21  Jim Meyering  <meyering@redhat.com>
+
+	maint: update bootstrap from gnulib
+	* bootstrap: Update to latest, so it no longer inserts empty lines
+	in .gitignore files.
+	* .gitignore: Let bootstrap move "!..." lines to end of file.
+
+	post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.9
+	* NEWS: Record release date.
+
+	build: avoid a warning when building with --disable-perl-regexp...
+	and --enable-gcc-warnings.
+	* src/pcresearch.c (WITHOUT_PCRE_NORETURN): Define.
+	Remove the unreachable return statement.
+	Reported by Eric Blake.
+
+	tests: ensure that each test script is executable
+	This adds a rule run at "make check" time to ensure that
+	test scripts are consistently executable.
+	This change is not required for "make check", but makes it easier
+	for people to run scripts manually, but that is discouraged because
+	doing so makes it easy to omit important variable settings that
+	are normally provided via TESTS_ENVIRONMENT.
+	This change also makes each of the existing TESTS executable.
+	* tests/Makefile.am (check_executable_TESTS): New rule.
+	(check): Depend on it.
+	* tests/{all_scripts}: chmod 755.
+	Prompted by a report from Eric Blake.
+
+	maint: update bootstrap from gnulib
+	* bootstrap: Update from gnulib.
+
+	maint: update po/POTFILES.in
+	* po/POTFILES.in: Remove dfasearch.c, now that it no longer
+	contains a translatable diagnostic.
+
+	tests: include-exclude: avoid false positive failure on FreeBSD
+	* tests/include-exclude: Avoid false-positive failure due to
+	matching "a" in a directory on FreeBSD, when searching a directory
+	without "-r".  Search for '^aaa$' rather than just 'a'.
+	Adjust test inputs and expected output files accordingly.
+
+	dfa: remove some useless casts
+	* src/dfa.c (icatalloc): Change type of "old" parameter
+	from "char const *" to "char *".
+	Don't cast-away const on realloc argument.
+	Remove now-unnecessary const-discarding cast.
+	Don't (void)-cast strcpy result.
+	* src/dosbuf.c (undossify_input): Remove anachronistic
+	cast-to-"char *" of realloc argument.
+
+	dfa: more heap-allocation-related overflow protection
+	* src/dfa.c (enlist): Use xnrealloc, not realloc.
+	Also, remove unnecessary cast-to-(char *).
+	(dfamust): Use xnmalloc, not malloc.  Before, this code would
+	return upon malloc failure (xnmalloc exits upon failure), but
+	later, via the *ALLOC macros, it could already exit, so this
+	new potential exit point is nothing new.  The same applies
+	to enlist, since it is called only through dfamust.
+
+	tests: update init.sh; simplify TESTS_ENVIRONMENT
+	* tests/init.sh: Update from coreutils.
+	* tests/Makefile.am (TESTS_ENVIRONMENT): Remove shell_or_perl_
+	function.  Instead, just use $(SHELL), since grep has no test
+	that starts with #!/usr/bin/perl.
+
+2011-06-20  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+
+	build: avoid configure/gnulib-related errors
+	* bootstrap.conf: Remove now-unnecessary code to exclude
+	gettext/intl-related m4 tests.
+
+2011-06-19  Jim Meyering  <meyering@redhat.com>
+
+	maint: tighten up superfluous code
+	* src/main.c (parse_grep_colors): Use xstrdup in place of xmalloc,
+	a useless test, strlen, and strcpy.
+
+2011-06-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	dfa: avoid possibility of overflow
+	* src/dfa.c (REALLOC_IF_NECESSARY, CALLOC, MALLOC, REALLOC):
+	Use functions from xalloc.h to avoid overflow.
+	* src/dfasearch.c (GEAcompile): Use xnrealloc rather than realloc.
+	* src/pcresearch.c (Pcompile): Use xnmalloc, not xmalloc.
+
+2011-06-17  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+
+	dfa: correct two uses of btowc
+	* src/dfa.c (setbit_c, setbit_case_fold_c): Compare the btowc
+	return value against WEOF, not EOF.  Suggested by Eli Zaretskii.
+	On a system like MinGW with unsigned wint_t, comparing a btowc
+	return value against EOF (-1) would always be false.
+
+	dfa: don't overrun a malloc'd buffer for certain regexps
+	* src/dfa.c (dfaanalyze): Allocate space for twice as many
+	positions as there are leaves.  Before this change, for some
+	regular expressions, DFA analysis would have inserted far more
+	"positions" than dfa->nleaves (up to double).
+	Reported by Raymond Russell in http://savannah.gnu.org/bugs/?33547
+	* tests/dfa-heap-overrun: Trigger the overrun.
+	* tests/Makefile.am (TESTS): Add it.
+	* NEWS (Bug fixes): Mention it.
+
+2011-06-08  Jim Meyering  <meyering@redhat.com>
+
+	tests: don't ignore sjis-mb test failure
+	I made changes that caused grep to segfault during "make check" --
+	as seen in dmesg output -- yet no test failed(!), and there was no
+	trace of the segfault in the logs.
+	* tests/sjis-mb (test_grep_reject): Ensure that output is empty.
+	Don't ignore test failure.
+
+2011-06-07  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: optimize wide characters in a bracket expression
+	* src/dfa.c (addtok): Compile characters to an alternation.  Handle the
+	case when nothing else remains in the MBCSET.
+
+	dfa: refactor to prepare for upcoming optimizations
+	* src/dfa.c (parse_bracket_exp): Move optimization of MBCSET from here...
+	(addtok): ... to here.
+
+2011-06-07  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: correct handling of single-byte character ranges
+	This provides a better fix for the unibyte-bracket-expr and high-bit-range
+	testcases, and fixes the latent bug tested by bogus-wctob.
+
+	* src/dfa.c (setbit_case_fold): Remove, replace with...
+	(setbit_wc, setbit_c, setbit_case_fold_c): ... these.
+	(parse_bracket_exp): Use setbit_case_fold_c when iterating over
+	single-byte sequences.  Use setbit_wc for multi-byte character sets,
+	and setbit_case_fold_c for single-byte character sets.
+	(lex): Use setbit_case_fold_c for single-byte character sets.
+
+2011-06-07  Paolo Bonzini  <bonzini@gnu.org>
+
+	tests: exercise latent bug in character ranges
+	* tests/bogus-wctob: New.
+	* Makefile.am (TESTS): Add it.
+
+2011-06-07  Jim Meyering  <meyering@redhat.com>
+
+	tests: exercise a uni-byte [...] bug: requires ru_RU.KOI8-R
+	* tests/unibyte-bracket-expr: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	* init.cfg (require_ru_RU_koi8_r): New function.
+
+	fix the [...] bug also for relatively unusual uni-byte encodings
+	* src/dfa.c (setbit_case_fold): Also handle uni-byte locales
+	like the one mentioned in the original report: see 2011-05-07
+	commit d98338eb.  Re-reported by Santiago Ruano Rincón.
+	Note that most uni-byte locales are not affected.
+	* NEWS (Bug fixes): Mention it.
+
+	tests: use skip_test_, not skip_
+	Use skip_test_, not skip_.  The former prints its message both to
+	the log file and to FD 9 (redirected to tty via tests/Makefile.am),
+	while skip_ prints only to stderr, which goes to the log file.
+	* tests/init.cfg (skip_test_): New function.
+	Use skip_test_ in place of skip_ everywhere.
+	* tests/fmbtest: s/skip_/skip_test_/
+	* tests/sjis-mb: Likewise.
+	* tests/euc-mb: Likewise.
+
+	tests: fmbtest: factor
+	* tests/fmbtest: Factor out locale-name duplication.
+
+	tests: fix skip-inducing typo in fmbtest
+	* tests/fmbtest: Fix locale name typo (s/cz_CZ/cs_CZ/)
+	that would cause this test to be skipped every time.
+
+2011-06-07  Paolo Bonzini  <bonzini@gnu.org>
+
+	gnulib: adjust included modules
+	* bootstrap.conf (gnulib_modules): Drop strtoul, rename wctype to
+	wctype-h.
+
+2011-05-21  Jim Meyering  <meyering@redhat.com>
+
+	grep -P: don't abort upon exceeding PCRE's backtracking limit
+	* src/pcresearch.c (Pexecute): Handle PCRE_ERROR_MATCHLIMIT.
+	* tests/Makefile.am (XFAIL_TESTS): Remove pcre-abort.
+	* tests/pcre-abort: Expect failure, no output, and increase
+	the length of the input string, in case the backtracking limit
+	is ever raised.  Adjust comment.
+	* NEWS (Bug fixes): Mention it.
+
+	tests: show how to make grep -P abort
+	* tests/pcre-abort: New file.
+	Minimal testcase by Paolo Bonzini, derived from a report
+	by www.beaver@list.ru.
+	* tests/Makefile.am (TESTS): Add it.
+	(XFAIL_TESTS): Add it here, too, since this test always fails, for now.
+
+	tests: fix oddities in pcre-z
+	* tests/pcre-z: Redirect stderr inside $(), not outside.
+	Remove double quotes around $REGEX (which is just 'a') within
+	double-quoted "$(...)".  Split a long line.
+
+	tests: factor out a new require_pcre_ function
+	* tests/init.cfg (require_pcre_): New function, factored out of...
+	* tests/pcre-z: ...here.  Use the function.
+	* tests/pcre: Likewise.
+
+	tests: clean up pcre
+	* tests/pcre: Skip (don't pass) the test when PCRE support is disabled.
+	Don't redirect so much to /dev/null, now that all test output goes to
+	pcre.log.  Remove unnecessary braces and diagnostic about failing test.
+
+2011-05-13  Jim Meyering  <meyering@redhat.com>
+
+	post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.8
+	* NEWS: Record release date.
+
+	build: update gnulib, for fixed getcwd test
+
+	build: update gnulib submodule to latest
+
+	maint: remove syntax-checking sc_tight_scope rule
+	* src/Makefile.am (sc_tight_scope): Remove rule.
+	Now it's provided via gnulib's maint.mk.
+	* cfg.mk (sc_tight_scope): Likewise.
+
+2011-05-08  Jim Meyering  <meyering@redhat.com>
+
+	maint: use consistent declaration syntax
+	* src/grep.h (matchers): Declare consistently, so the sc_tight_scope
+	rule detects this as an extern-marked variable.
+
+2011-05-07  Jim Meyering  <meyering@redhat.com>
+
+	maint: use gnulib's new readme-release module
+	* bootstrap.conf (gnulib_modules): Add readme-release.
+	(bootstrap_epilogue): Add the recommended perl one-liner.
+	* README-release: Remove file; it is now generated from gnulib.
+	* .gitignore: Add it.
+	* gnulib: Update submodule to latest.
+
+	tests: exercise bug with 0x80..0xff in [...]
+	* tests/high-bit-range: New test, inspired by an example in the
+	report by Igor O. Ladygin: http://bugs.debian.org/624387,
+	via Santiago Ruano Rincón's http://savannah.gnu.org/bugs/?33198
+	* tests/Makefile.am (TESTS): Add it.
+
+	fix a bug whereby echo c|grep '[c]' would fail for any c in 0x80..0xff
+	* src/dfa.c (setbit_case_fold) [MBS_SUPPORT]: Set the bit also
+	when wctob returns EOF.
+	* NEWS (Bug fixes): Mention it.
+
+2011-05-02  Reuben Thomas  <rrt@sc3d.org>
+
+	doc: correct comment about mmap
+	* doc/grep.texi (Other Options) [--mmap]: This option is now
+	ignored, so using it can have no effect on performance.
+
+2011-05-02  Arnold D. Robbins  <arnold@skeeve.com>
+
+	build: move add_utf8_anychar into MBS ifdef
+
+2011-05-01  Arnold D. Robbins  <arnold@skeeve.com>
+
+	maint: remove GAWK ifndef; no longer needed
+
+2011-05-01  Jim Meyering  <meyering@redhat.com>
+
+	maint: remove now-unnecessary use of gnulib's strtol module
+	* bootstrap.conf (gnulib_modules): Remove now-obsolete "strtol".
+
+2011-04-29  Jim Meyering  <meyering@redhat.com>
+
+	maint: tweak README-release
+	* README-release: Add note to check the NixOS/Hydra autobuilder results.
+
+2011-04-28  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+
+	maint: add the tight_scope syntax-checking rule
+	This ensures that the only externally scoped symbols are ones
+	that are explicitly marked as "extern" or white-listed like "main".
+	* src/Makefile.am (sc_tight_scope): New rule, copied from coreutils.
+	* cfg.mk (sc_tight_scope): Define, to hook to it from the top level.
+
+	maint: mark some function declarations as extern
+	* src/search.h: Add "extern" keyword to each function declaration.
+
+2011-04-23  Jim Meyering  <meyering@redhat.com>
+
+	maint: fix doubled-word typos in comments
+	* src/dfa.c (SUCCEEDS_IN_CONTEXT): Remove doubled "a".
+	* src/dfa.c (BACKREF): s/it it/it is/
+
+2011-04-09  Jim Meyering  <meyering@redhat.com>
+
+	maint: fix typos in comments: s/can not/cannot/
+	* src/dfa.c (check_matching_with_multibyte_ops, dfastate): As above.
+
+2011-03-19  Jim Meyering  <meyering@redhat.com>
+
+	maint: stop using .x-sc_* files to list syntax-check exemptions
+	Instead, use the new mechanism with which you merely use a
+	variable (derived from the rule name) defined in cfg.mk to an ERE
+	matching the exempted file names.
+	* gnulib: Update to latest, to get maint.mk that implements this.
+	* .x-sc_bindtextdomain: Remove file.
+	* .x-sc_prohibit_tab_based_indentation: Likewise.
+	* .x-sc_prohibit_xalloc_without_use: Likewise.
+	* .x-sc_space_tab: Likewise.
+	* cfg.mk: Define variables to exempt the same files.
+
+	build: correct my change of 2011-01-28
+	Do not override original dist-hook rule.
+	* Makefile.am (run-syntax-check): Rename from overriding dist-hook.
+	(dist-hook): Depend on run-syntax-check.
+
+2011-02-27  Jim Meyering  <meyering@redhat.com>
+
+	maint: update from gnulib
+	* bootstrap: Update from gnulib.
+	* tests/init.sh: Likewise.
+	* gnulib: Update to latest.
+
+2011-01-27  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+
+	build: run syntax-check rules as part of "make dist"
+	* Makefile.am (dist-hook): Depend on syntax-check.
+	Suggested by Reuben Thomas.
+
+2011-01-26  Jim Meyering  <meyering@redhat.com>
+
+	maint: remove unneeded #include directives
+	* lib/savedir.c: Don't include <stddef.h>.  Not needed.
+	* src/dfa.c: Likewise.
+
+2011-01-22  Jim Meyering  <meyering@redhat.com>
+
+	build: avoid new syntax-check failures
+	* .x-sc_bindtextdomain: New file, used to avoid a spurious
+	failure from the new syntax-check rule.
+	* NEWS: Remove a trailing space.
+
+2011-01-19  Jim Meyering  <meyering@redhat.com>
+
+	tests: add a known-to-fail test
+	* tests/turkish-I: New test.
+	* tests/Makefile.am (TESTS): Add it.
+	(XFAIL_TESTS): Add here, too.
+	Reported by Ilya Basin.
+
+	maint: sort test names in Makefile.am
+	* tests/Makefile.am (TESTS): Sort test names.
+
+2011-01-05  Jim Meyering  <meyering@redhat.com>
+
+	doc: remove erroneous "{,m}" item from grep man page
+	* doc/grep.in.1: Remove item describing bogus {,m} regex notation.
+	Reported by Fernando Basso.
+
+2011-01-03  Jim Meyering  <meyering@redhat.com>
+
+	maint: update copyright year ranges to include 2011
+	Run "make update-copyright", so "make syntax-check" works in 2011.
+
+	build: update gnulib submodule to latest
+
+2010-12-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	main: fix exit status on xmalloc failures
+	* NEWS: Update.
+	* src/main.c (main): Set exit_failure.  Reported by Guy Shaw.
+
+	add comment above fn_grep
+	* configure.ac (fn_grep): Add comment suggested by Bruno Haible.
+
+2010-11-14  Paolo Bonzini  <bonzini@gnu.org>
+
+	grep: add include guards
+	* src/system.h: Add multiple inclusion guards.
+	* src/grep.h: Likewise.
+
+	configure: fix M4 quotation
+	* configure.ac: Add extra brackets around [...] patterns.
+
+	configure: remove dependency on grep that supports long lines and -e
+	* configure.ac (fn_grep): New.  Set GREP and EGREP to it, replace
+	with newly-built grep before AC_OUTPUT.  Reported by Florin Iucha
+	<http://savannah.gnu.org/bugs/?31646>.
+
+2010-11-04  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib to latest
+
+	tests: don't hard-code a 5-second timeout; that's not always enough
+	Instead, time the command in the C locale and use 10 times that
+	duration -- rounded up to whole seconds -- as the timeout when running
+	it in the UTF-8 locale.
+	* tests/backref-multibyte-slow: Compute a performance-relative timeout.
+	Reported by Gilles Espinasse, regarding an imac 400.  For more details,
+	see http://thread.gmane.org/gmane.comp.gnu.grep.bugs/3360
+
+2010-10-09  Jim Meyering  <meyering@redhat.com>
+
+	maint: describe policy on copyright year number ranges
+	* README: Mention coreutils' long-standing policy on use of M-N
+	ranges in copyright year lists.  Requested by Richard Stallman.
+
+2010-10-04  Dmitry V. Levin  <ldv@altlinux.org>
+
+	build: compile gnulib without -Wcast-align to avoid warnings on ARM
+	* configure.ac (GNULIB_WARN_CFLAGS): Remove -Wcast-align.
+
+2010-09-30  Jim Meyering  <meyering@redhat.com>
+
+	maint: don't define a gpg_key_ID.  now it's obtained automatically
+	* cfg.mk (gpg_key_ID): Remove definition.  No longer needed.
+
+2010-09-23  Paolo Bonzini  <bonzini@gnu.org>
+
+	tests: add testcase for previous fix
+	* tests/inconsistent-ranges: New.
+	* tests/Makefile.am (TESTS): Add it.
+
+2010-09-23  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: process range expressions consistently with system regex
+	The actual meaning of range expressions in glibc is not exactly strcoll,
+	which makes the behavior of grep hard to predict when compiled with the
+	system regex.  Leave to the system regex matcher the decision of which
+	single-byte characters are matched by a range expression.
+
+	This partially reverts a change made in commit 0d38a8bb (which made
+	sense at the time, but not now that src/dfa.c is not doing multibyte
+	character set matching anymore).
+
+	* src/dfa.c (in_coll_range): Remove.
+	(parse_bracket_exp): Use system regex to find which single-char
+	bytes match a range expression.
+
+2010-09-23  Bruno Haible  <bruno@clisp.org>
+
+	build: fix link error on systems that have libiconv but not libintl
+	* src/Makefile.am (LDADD): Add $(LIBICONV).
+
+2010-09-21  Jim Meyering  <meyering@redhat.com>
+
+	build: avoid compilation failure on the Hurd
+	* src/dfasearch.c (dfawarn): Rename enum symbols to use DW_ prefix,
+	so as not to collide with "GNU", which is defined by the Hurd.
+	Reported by Matthias Lanzinger in http://savannah.gnu.org/bugs/?31096
+
+2010-09-20  Jim Meyering  <meyering@redhat.com>
+
+	maint: avoid obsolete gnulib modules
+	* bootstrap.conf (gnulib_modules): Don't use obsolete atexit module.
+	Use malloc-gnu and realloc-gnu -- malloc and realloc are obsolete.
+
+	maint: update README-release
+	* README-release: Reflect changes in coreutils' version of this file.
+
+2010-09-20  Aharon Robbins  <arnold@skeeve.com>
+
+	dfa: fix compilation when not using MBS
+	* src/dfa.c (prepare_wc_buf) [!MBS_SUPPORT]: Do not compile this
+	function.
+
+2010-09-16  Jim Meyering  <meyering@redhat.com>
+
+	post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.7
+	* NEWS: Record release date.
+
+2010-09-13  Paolo Bonzini  <bonzini@gnu.org>
+
+	tests: add equiv-classes
+	* configure.ac (USE_INCLUDED_REGEX): Add Automake conditional.
+	* tests/equiv-classes: New test.
+	* tests/Makefile.am (TESTS): Add it.
+	(XFAIL_TESTS) [USE_INCLUDED_REGEX]: Mark it as expected failure.
+
+2010-09-13  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: fall back to glibc matcher if a MBCSET is found
+	This patch enables full support of equivalence classes and multicharacter
+	collation symbols.  It can also improve performance problems in some
+	cases for multibyte grep.  Both of these changes however depend on the
+	glibc version installed in the system.
+
+	For UTF-8 it will trigger only in the presence of MBCSET, e.g. [a-z].
+	For other character sets all brackets and `.` as well will trigger it.
+
+	* NEWS: Document this.
+	* src/dfa.c (dfaexec): Fall back to glibc for multibyte matches,
+	if possible.
+
+2010-09-13  Paolo Bonzini  <bonzini@gnu.org>
+
+	build: update gnulib submodule to latest
+	This is done to include commit "regex: Pass the system regex if its only
+	problem is 32-bit regoff_t".
+
+	* gnulib: Update to e2b0e1a.
+
+2010-09-12  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+
+	tests: update init.sh from gnulib
+	* tests/init.sh: Update from gnulib.
+
+2010-09-08  Patrick Boyd  <pboyd04@gmail.com>
+
+	dfa: reduce stack usage
+	* src/dfa.c (dfaanalyze): Allocate GRPS and LABELS arrays from heap,
+	not on the stack.  With this change, grep can now run in these UEFI
+	simulators:
+	http://sourceforge.net/apps/mediawiki/tianocore/index.php?title=EDK
+	http://sourceforge.net/apps/mediawiki/tianocore/index.php?title=EDK2
+
+2010-09-08  Jim Meyering  <meyering@redhat.com>
+
+	tests/portability: avoid spurious failure with OpenBSD's /bin/sh
+	* tests/warn-char-classes: Don't use "set -x" here.  It causes
+	a spurious test failure on openbsd 4.7 when using its /bin/sh,
+	since the command, /bin/sh -xc 'P=1 : 2> err' emits "P=1" into err.
+	To enable set -x, run the test with "VERBOSE=yes", e.g.,
+	make check -C tests TESTS=warn-char-classes VERBOSE=yes
+
+2010-09-07  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+
+2010-09-03  Jim Meyering  <meyering@redhat.com>
+
+	tests: remove .sh suffix from remaining test scripts.
+	* tests/backref: Rename from backref.sh.
+	* tests/bre: Rename from bre.sh.
+	* tests/ere: Rename from ere.sh.
+	* tests/file: Rename from file.sh.
+	* tests/khadafy: Rename from khadafy.sh.
+	* tests/options: Rename from options.sh.
+	* tests/pcre: Rename from pcre.sh.
+	* tests/spencer1: Rename from spencer1.sh.
+	* tests/spencer2: Rename from spencer2.sh.
+	* tests/status: Rename from status.sh.
+	* tests/yesno: Rename from yesno.sh.
+	* tests/Makefile.am: Reflect renamings.
+
+	tests: convert remaining tests to use init.sh
+	* tests/file.sh: Use init.sh. Use Exit, not exit. Use grep, not ${GREP}.
+	* tests/khadafy.sh: Likewise.
+	* tests/options.sh: Likewise.
+	* tests/spencer1.sh: Likewise.
+	* tests/spencer2.sh: Likewise.
+	* tests/status.sh: Likewise.
+	* tests/spencer1.awk: Use grep, not ${GREP}.
+	Don't ignore failure to generate intermediate shell script.
+	* tests/Makefile.am (CLEANFILES): Remove altogether, now that
+	all tests use init.sh.
+	(TESTS_ENVIRONMENT): Don't set GREP.  It's no longer used.
+
+	tests: remove warning.sh
+	* tests/warning.sh: Remove file.  All it did was print a warning.
+	* tests/Makefile.am (TESTS): Remove warning.sh.
+
+	tests: convert pcre.sh to use init.sh
+	* tests/pcre.sh: Use init.sh. Use Exit, not exit. Use grep, not ${GREP}.
+
+	tests: convert bre.sh to use init.sh
+	* tests/bre.sh: Use init.sh.
+	Use Exit, not exit.
+	Use "$abs_top_srcdir/tests/", not "$srcdir/" to specify inputs.
+	Source generated bre.script, rather than invoking $SHELL.
+	* tests/ere.sh: Likewise.
+	* tests/bre.awk: Use grep, not ${GREP}.
+	* tests/ere.awk: Likewise.
+	* tests/Makefile.am (CLEANFILES): Remove bre.script and ere.script.
+
+	tests: convert to use init.sh
+	* tests/yesno.sh: Use init.sh.
+	Use Exit, not exit.
+	Use grep, not $GREP.
+	* tests/backref.sh: Likewise.
+	* tests/Makefile.am (CLEANFILES): Remove yesno.txt.
+
+	build: update gnulib submodule to latest
+
+	build: update build/test tools from gnulib
+	* bootstrap: Update from gnulib.
+	* tests/init.sh: Likewise.
+
+2010-09-01  Jim Meyering  <meyering@redhat.com>
+
+	maint: add lib/version-etc.c to the list in POTFILES.in
+	* po/POTFILES.in: Add lib/version-etc.c.
+
+2010-09-01  Jim Meyering  <meyering@redhat.com>
+
+	grep: diagnose and exit-2 for bogus REs like [:space:], [:digit:], etc.
+	When I make a mistake like this:
+	  grep '[:lower:]' ...
+	be it in a script or on the command line, I want to know about
+	it as soon as possible.  I don't want grep to print a mere warning
+	that it is interpreting this suspicious and almost guaranteed-wrong
+	regular expression as a set of just 6 bytes.  And I certainly don't
+	want grep to silently do the wrong thing, even if that would be
+	officially standards-conforming.  It's obvious that I intended
+	[[:lower:]], and I want my error to be diagnosed in a way that is
+	most likely to get my attention.  Thus, with this change, grep now
+	prints a diagnostic and exits with status 2 the moment it
+	encounters an offending [:char_class:] construct.
+
+	This changes the way grep works by default, rather than
+	putting this new behavior on an option.  A new option
+	would seldom be used in scripts (not portable), and would
+	probably be used only rarely by those who need it the most.
+	This new functionality provides a valuable safety measure
+	and incurs truly negligible risk.
+
+	For strict POSIX compliance, set POSIXLY_CORRECT in
+	your environment.  That disables this new feature.
+
+	Revert the changes from commit 2cd3bcea, "grep: add
+	--warnings={always,never,auto}.", and then do the following:
+
+	* src/dfasearch.c (dfawarn): Call getenv("POSIXLY_CORRECT") here;
+	Remove "warning: " from the diagnostic, now that it's more than
+	a warning, and exit with status 2.
+	* NEWS (New features): Describe the new semantics.
+	* tests/warn-char-classes: Adjust one test to accommodate this change.
+	* doc/grep.texi (Character Classes and Bracket Expressions): Document.
+	(Environment Variables): Cross-reference it.
+	Remove reference to obsolete getopt illegal vs. invalid difference.
+	Thanks to Paul Eggert for suggestions and an initial prod.
+
+2010-08-30  Jim Meyering  <meyering@redhat.com>
+
+	maint: use gnulib's standard --version-printing code
+	This includes author names and keeps the copyright year up to date.
+	* bootstrap.conf (gnulib_modules): Add propername and version-etc-fsf.
+	* src/main.c (AUTHORS): Define.
+	(main): Use version_etc, rather than hard-coding the copyright text.
+	Prompted by a patch from Paolo Bonzini.
+
+2010-08-27  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: warn on [:space:] and similar
+	* src/dfa.c (parse_bracket_exp): Warn on regular expressions such as
+	[:space:].
+	* src/dfa.h (dfawarn): New prototype.
+	* src/dfasearch.c (dfawarn): New.
+	* NEWS: Document.
+
+	tests: add test for warnings
+	* tests/Makefile.am (TESTS): Add warn-char-class.
+	* tests/warn-char-class: New.
+
+	grep: add --warnings={always,never,auto}.
+	* src/grep.h (no_warnings): New declaration.
+	* src/main.c (no_warnings): New.
+	(WARNINGS_OPTION): Add to enum.
+	(main): Add --warnings.  Handle color_option == 2 together with it.
+
+	tests: add failing test for grep from a directory
+	* tests/Makefile.am (TESTS, XFAIL_TESTS): Add grep-dir.
+	* tests/grep-dir: New.
+
+	tests: add test for previous commit
+	* tests/Makefile.am (TESTS): Add grep-dev-null.
+	* tests/grep-dev-null: New.
+
+	search: fix "grep -Fif /dev/null"
+	* bootstrap.conf: Include gnulib module minmax.
+	* src/searchutils.c (mbtolower): Handle *N == 0 case.
+	* src/system.h: Include minmax.h from gnulib.
+
+2010-08-27  Adam Katz  <savannah@kopis.com>
+
+	Remove declaration after statement in dfa.c
+	* dfa.c (dfaexec): Declare saved_end at the beginning of the function.
+
+2010-08-13  Jim Meyering  <meyering@redhat.com>
+
+	make --include=FILE work once again
+	The semantics of excluded_file_name changed (when operating on
+	an "included" file name list).
+	* src/main.c (main): Adjust for changed semantics of excluded_file_name
+	simply by removing a negation.
+	* NEWS (Bug fixes): Mention this fix.
+	* tests/include-exclude: Add a test for this.
+	Reported by Joe Perches in http://savannah.gnu.org/bugs/?29876.
+
+2010-07-16  Paolo Bonzini  <bonzini@gnu.org>
+
+	doc: document \s and \S
+	* doc/grep.texi (The Backslash Character and Special Expressions):
+	Document \s and \S escapes.
+
+2010-05-29  Karl Berry  <karl@gnu.org>
+
+	doc: discuss matches that span two or more lines
+	* doc/grep.texi (Usage): Discuss matching across lines.
+	(Character Classes and Bracket Expressions) <[:space:]>: refer to it.
+
+2010-05-25  Jim Meyering  <meyering@redhat.com>
+
+	build: use latest gettext: 0.18
+	* configure.ac: Use gettext-0.18.
+	* bootstrap.conf (gnulib_modules): Use gettext-h, not gettext.
+	since the latter drags in a depedency on gettext 0.18.
+	Suggested by Bruno Haible.
+
+	maint: update helper scripts from gnulib
+	* tests/init.sh: Update from gnulib.
+	* bootstrap: Likewise.
+
+	build: update gnulib submodule to latest
+
+	maint: don't emit an extra newline in each of two diagnostics
+	* src/main.c (context_length_arg, grepdir): Remove a stray \n in
+	each of two diagnostics.
+
+2010-05-24  Bruno Haible  <bruno@clisp.org>
+
+	search: Avoid out-of-bounds access.
+	* src/dfasearch.c (EGexecute): Avoid access beyond end of buffer
+	that could happen if start != beg - buf.
+
+2010-05-23  Aharon Robbins  <arnold@skeeve.com>
+
+	dfa: fix signedness warnings
+	* src/dfa.c (dfaexec): Cast p when passing it to prepare_wc_buf.
+
+2010-05-09  Jim Meyering  <meyering@redhat.com>
+
+	tests: update init.sh
+	* tests/init.sh: Update from gnulib.
+
+	tests: normalize init.sh-sourcing code
+	* tests/backref-multibyte-slow: Use one-line idiom.
+	* tests/backref-word: Likewise.
+	* tests/case-fold-backref: Likewise.
+	* tests/case-fold-backslash-w: Likewise.
+	* tests/case-fold-char-class: Likewise.
+	* tests/case-fold-char-range: Likewise.
+	* tests/case-fold-char-type: Likewise.
+	* tests/char-class-multibyte: Likewise.
+	* tests/dfaexec-multibyte: Likewise.
+	* tests/empty: Likewise.
+	* tests/euc-mb: Likewise.
+	* tests/fedora: Likewise.
+	* tests/fgrep-infloop: Likewise.
+	* tests/fmbtest: Likewise.
+	* tests/foad1: Likewise.
+	* tests/ignore-mmap: Likewise.
+	* tests/include-exclude: Likewise.
+	* tests/max-count-vs-context: Likewise.
+	* tests/pcre-z: Likewise.
+	* tests/prefix-of-multibyte: Likewise.
+	* tests/reversed-range-endpoints: Likewise.
+	* tests/sjis-mb: Likewise.
+	* tests/spencer1-locale: Likewise.
+	* tests/word-delim-multibyte: Likewise.
+	* tests/word-multi-file: Likewise.
+
+	tests: update help-version
+	* tests/help-version: Update from coreutils.
+
+2010-05-06  Jim Meyering  <meyering@redhat.com>
+
+	tests: enable glibc's malloc-perturbing option
+	* tests/Makefile.am (MALLOC_PERTURB_): Define, in case it's not already
+	set in your environment.
+	(TESTS_ENVIRONMENT): Propagate MALLOC_PERTURB_ setting to test scripts.
+
+2010-05-06  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: speed up [[:digit:]] and [[:xdigit:]]
+	There's no "multibyte pain" in these two classes, since POSIX
+	and ISO C99 mandate their contents.
+
+	Time for "./grep -x '[[:digit:]]' /usr/share/dict/linux.words"
+	Before: 1.5s, after: 0.07s.  (sed manages only 0.5s).
+
+	* src/dfa.c (predicates): Declare struct dfa_ctype separately
+	from definition.  Add sb_only.
+	(find_pred): Return const struct dfa_ctype *.
+	(parse_bracket_exp): Return const struct dfa_ctype *.  Do
+	not fill MBCSET for sb_only character types.
+
+2010-05-05  Jim Meyering  <meyering@redhat.com>
+
+	tests: readability: use awk rather than obfuscated sed
+	* tests/backref-multibyte-slow: Generate input using an awk for-loop
+	rather than expensive and harder-to-read sed pipes.
+	Remove stray "set -x" and "wc -l in".
+
+	dfa: avoid segfault when processing an invalid multi-byte sequence
+	* src/dfa.c (dfaexec): Handle the cases in which mbrtowc returns
+	(size_t)-1 or (size_t)-2, rather than setting mblen_buf[i] to an
+	outrageously large value.
+
+2010-05-05  Paolo Bonzini  <bonzini@gnu.org>
+
+	grep: remove redundant syntax bit
+	* grep.c (Gcompile): Remove RE_HAT_LISTS_NOT_NEWLINE.
+
+	tests: add test for newly-fixed performance problem
+	* tests/backref-multibyte-slow: New.
+	* tests/Makefile.am: Add it.
+
+2010-05-05  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: convert to wide character line-by-line
+	This provides a nice speedup for -m in general, but especially
+	it avoids quadratic complexity in case we have to go to glibc.
+
+	* NEWS: Document change.
+	* src/dfa.c (prepare_wc_buf): Extract out of dfaexec.  Convert
+	only up to the next newline.
+	(dfaexec): Exit multibyte processing loop if past buf_end.
+	Call prepare_wc_buf again after processing a newline.
+
+2010-05-01  Jim Meyering  <meyering@redhat.com>
+
+	maint: remove useless #if HAVE_STDLIB_H
+	* src/mbsupport.h: Don't test HAVE_STDLIB_H.
+
+2010-04-20  Jim Meyering  <meyering@redhat.com>
+
+	dfa: don't #ifdef-out member declarations
+	* src/dfa.c (struct dfa): Remove "#if MBS_SUPPORT" guard that made
+	several member declarations conditional on this cpp definition.
+	(token): Likewise.
+	Reported by Anders Wallin.
+
+	tests: ensure that the --mmap option is ignored
+	* tests/ignore-mmap: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	Reported by Jaroslav Å karvada in <http://savannah.gnu.org/bugs/?29614>
+
+2010-04-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: honor RE_DOT_NEWLINE and RE_DOT_NOT_NULL in UTF-8 period optimization
+	* src/dfa.c (add_utf8_anychar): Check for RE_DOT_NEWLINE and
+	RE_DOT_NOT_NULL.
+
+	grep: fix --mmap not being ignored
+	* NEWS: Document bugfix.
+	* main.c (main): Ignore MMAP_OPTION.
+
+2010-04-19  Jim Meyering  <meyering@redhat.com>
+
+	maint: avoid syntax-check failure due to indentation via TABs
+	* src/dfa.c (atom): Expand TABs in indentation.
+
+	build: update gnulib submodule to latest
+
+	maint: restrict scope of two globals to dfasearch.c
+	* src/dfasearch.c (patterns, pcount): Declare these file-scoped
+	globals to be static.
+
+2010-04-19  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: optimize UTF-8 period
+	* NEWS: Document improvement.
+	* src/dfa.c (struct dfa): Add utf8_anychar_classes.
+	(add_utf8_anychar): New.
+	(atom): Simplify if/else nesting.  Call add_utf8_anychar for ANYCHAR
+	in UTF-8 locales.
+	(dfaoptimize): Abort on ANYCHAR.
+
+	dfa: drop ORTOP
+	* src/dfa.c (token, prtok, addtok_mb, nsubtoks, dfaanalyze, dfamust):
+	Remove ORTOP.
+	(regexp): Remove parameter, always add OR at the end, adjust callers.
+	(atom): Adjust caller.
+	(dfaparse): Adjust caller.  Always add OR at the end.
+
+	dfa: fix {0,0}
+	* NEWS: Document change.
+	* src/dfa.c (struct dfa): Remove "broken" field.
+	(lex): Do not set it.
+	(closure): On {0,0}, backup and lex another closure without
+	adding a CAT.
+	(dfabroken): Remove.
+	* src/dfa.h (dfabroken): Remove.
+	* tests/spencer1.tests: Add testcases for {m,n}.
+
+	dfa: simplify dfainit
+	* src/dfa.c (dfainit): Use memset.
+
+2010-04-17  Jim Meyering  <meyering@redhat.com>
+
+	doc: fix a nit in HACKING
+	* HACKING: Correct size of .git/ dir: 9MB, not 30MB.
+
+	tests: add an expected-to-fail test using \< in a multi-byte locale
+	* tests/word-delim-multibyte: New test.  Currently failing.
+	* tests/Makefile.am (TESTS): Add it.
+	(XFAIL_TESTS): Define, temporarily.
+	Reported by Jaroslav Å karvada in http://savannah.gnu.org/bugs/?29537.
+
+2010-04-16  Paolo Bonzini  <bonzini@gnu.org>
+
+	test: cover just-fixed bug
+	* tests/empty: Test -Fw too.
+
+	grep: fix matching the empty string with grep -Fw
+	* NEWS: Document fix.
+	* src/kwsearch.c (Fexecute): The empty string is a valid match if it is
+	a whole word.
+
+2010-04-15  Jim Meyering  <meyering@redhat.com>
+
+	maint: update init.sh and HACKING
+	* HACKING: Sync from coreutils.
+	* tests/init.sh: Update from gnulib.
+
+2010-04-13  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest; adapt
+	* COPYING: Remove empty line.
+	* README: Likewise.
+	* doc/fdl.texi: Likewise.
+	* tests/backref-word: Likewise.
+
+2010-04-11  Stefano Lattarini  <stefano.lattarini@gmail.com>
+
+	tests: accept the Debian timeout program
+	* tests/init.cfg: test timeout with `timeout 10s true'
+
+2010-04-08  Jim Meyering  <meyering@redhat.com>
+
+	dfa: convert "cannot happen" code/comment to use assert
+	* src/dfa.c (dfamust): There were numerous "cannot happen" comments,
+	some associated with "if (expr) goto done;".  Replace each with an
+	equivalent "assert (!expr);".
+
+	build: use gnulib's isblank module
+	* bootstrap.conf (gnulib_modules): Use gnulib's isblank module,
+	now that we rely on the function by that name.
+
+	maint: undo TAB-conversion change to gl/lib/*.c.diff
+	This fixes a bootstrap failure due to the patches not applying.
+	* .x-sc_prohibit_tab_based_indentation: Add ^gl/lib/.*\.c\.diff$
+	* gl/lib/regcomp.c.diff: Revert today's TAB->space change.
+	* gl/lib/regex_internal.c.diff: Likewise.
+	* gl/lib/regexec.c.diff: Likewise.
+
+2010-04-08  Arnold D. Robbins  <arnold@skeeve.com>
+
+	dfa: fix declaration of dfabroken in dfa.h
+	* dfa.h (dfabroken) [GAWK]: Fix declaration to match that in dfa.c.
+
+2010-04-08  Jim Meyering  <meyering@redhat.com>
+
+	maint: add syntax-check rule to enforce the new no-leading-TABs policy
+	* cfg.mk (sc_prohibit_tab_based_indentation): New rule, from coreutils.
+	(sc_prohibit_emacs__indent_tabs_mode__setting): Likewise.
+	(old_NEWS_hash): Update.
+	* .x-sc_prohibit_tab_based_indentation: List exempt files.
+
+2010-04-08  Jim Meyering  <meyering@redhat.com>
+
+	convert all TABs to equivalent spaces in indentation
+	Using this file,
+
+	cat > leading-blank.exempt <<\EOF
+	(?:^|\/)ChangeLog[^/]*$
+	(?:^|\/)(?:GNU)?[Mm]akefile[^/]*$
+	\.(?:am|mk)$
+	EOF
+
+	run this command to convert all non-conforming leading white
+	space to be all spaces:
+
+	git ls-files \
+	  | pcregrep -vf leading-blank.exempt \
+	  | xargs pcregrep -l '^ *\t' \
+	  | xargs perl -MText::Tabs -ni -le \
+	    '$m=/^( *\t[ \t]*)(.*)/; print $m ? expand($1) . $2 : $_'
+
+2010-04-08  Jim Meyering  <meyering@redhat.com>
+
+	build: include cfg.mk in the distribution tarball
+	* Makefile.am (EXTRA_DIST): Add cfg.mk.
+
+2010-04-08  Jim Meyering  <meyering@redhat.com>
+
+	maint: Makefile.am tweak  (no semantic change)
+	* Makefile.am (EXTRA_DIST): List one per line.  Sort.
+
+	build: include cfg.mk in the distribution tarball
+	* Makefile.am (EXTRA_DIST): Add cfg.mk.
+
+2010-04-08  Jim Meyering  <meyering@redhat.com>
+
+	dfa: move definition of __attribute__ back into dfa.h
+	* src/dfa.c (__attribute__): Move definition back to...
+	* src/dfa.h: ... this file.  It is essential for non-gcc compilers.
+	Reported by Arnold Robbins.
+
+2010-04-07  Arnold D. Robbins  <arnold@skeeve.com>
+
+	dfa: move internals from dfa.h to dfa.c
+	* src/dfa.h: Move internals into dfa.c.
+	* src/dfa.c: The dfa internals are now totally local to this file.
+	(dfaalloc, dfamusts, dfabroken): New functions to access features.
+	* src/dfasearch.c (dfa): Change this global variable from struct to pointer.
+	Adapt to that change, and use new functions, dfamusts and dfaalloc.
+
+2010-04-07  Jim Meyering  <meyering@redhat.com>
+
+	mbtolower: avoid potential NULL-dereference
+	* src/searchutils.c: Include <assert.h>.
+	(mbtolower): Assert that 0 < *n, to avoid possibility of NULL-deref.
+	Remove dead increment.
+
+	maint: tell git to ignore more build products
+	* .gitignore: Also ignore results of "make ID" and "make tags".
+
+	build: update gnulib submodule to latest
+
+	tests: use init.sh consistently
+	* tests/euc-mb: Call "path_prepend_ ." on a line by itself,
+	and with a comment.  This makes it so all of the srcdir/init.sh
+	lines are consistent, project-wide, and so that the addition of "."
+	to PATH for this test is properly documented.
+	* tests/sjis-mb: Likewise.
+
+	maint: avoid new syntax-check failure, ...
+	...now that the sole use of xmalloc no longer matches the
+	regular expression used by the syntax-check rule.
+	* .x-sc_prohibit_xalloc_without_use: Exempt src/kwset.c.
+
+	grep: make kwset's obstack use xmalloc, not malloc
+	This insidious bug could make grep fail to diagnose a failed malloc,
+	and then proceed to dereference the resulting NULL pointer.
+	Note that this bug was unlikely ever to cause real trouble; without
+	the fix, grep would segfault upon OOM, now it exits with a diagnostic.
+	* src/kwset.c (malloc) [GREP]: Define without the "(s)" macro
+	parameter, so that unadorned uses of malloc are also mapped to xmalloc.
+	One such use is in the expansion of obstack_init.
+	Report and patch by Nelson H. F. Beebe, in
+	http://thread.gmane.org/gmane.comp.gnu.grep.bugs/2995
+
+	tests: improve help-version (sync from gzip's version)
+	* tests/help-version: Cross-check $VERSION and --version output.
+	* tests/Makefile.am (TESTS_ENVIRONMENT): Export VERSION=$(VERSION).
+
+2010-04-06  Jim Meyering  <meyering@redhat.com>
+
+	doc: update THANKS
+	* THANKS: Update.
+
+2010-04-06  Aharon Robbins  <arnold@skeeve.com>
+
+	build: avoid conflict with WCHAR definition from Cygwin's <windows.h>
+	* src/dfa.h (enum token): Remove the definition from this file.
+	Replace with a declaration and typedef.  Moved to ...
+	* src/dfa.c (enum token): ... here.
+	Reported by Corinna Vinschen.
+
+2010-04-06  Jim Meyering  <meyering@redhat.com>
+
+	doc: add HACKING
+	* HACKING: New file.  Copied from coreutils, with s/coreutils/grep/
+	and a few minor edits.
+
+2010-04-05  Jim Meyering  <meyering@redhat.com>
+
+	tests: pull fixed init.sh from gnulib
+	* tests/init.sh: Update from gnulib.
+
+	maint: fix new argmatch-related syntax-check failures
+	* configure.ac (ARGMATCH_DIE): Use usage(EXIT_FAILURE), not exit(1).
+	* po/POTFILES.in: Add lib/argmatch.c.
+
+	maint: update cfg.mk to work with gnulib's newer "make syntax-check"
+	* cfg.mk: Update to use new _sc_search_regexp interface.  Run this:
+	perl -pi -e 's/\b_prohibit_regexp\b/_sc_search_regexp/;'
+	-e 's/\bmsg=/halt=/; s/\bre=/prohibit=/;' cfg.mk
+	and then adjust backslashes so they still line up.
+
+	maint: update tests/init.sh from gnulib
+	This ensures that the explanation for any skipped or failed test
+	is printed on stderr, not buried in each .log file.
+	* tests/init.sh: Update from gnulib.
+	* tests/init.cfg (stderr_fileno_): Define to 9, to match the
+	literal 2>&9 in tests/Makefile.am
+
+	build: update gnulib submodule to latest
+
+2010-04-04  Jim Meyering  <meyering@redhat.com>
+
+	maint: use argmatch, for better --directories=INVAL diagnostics
+	Before, you'd see this:
+	  grep: unknown directories method
+
+	Now, you'll see this:
+	  grep: invalid argument `INVAL' for `--directories'
+	  Valid arguments are:
+	    - `read'
+	    - `recurse'
+	    - `skip'
+	  Usage: src/grep [OPTION]... PATTERN [FILE]...
+	  Try `src/grep --help' for more information.
+
+	* bootstrap.conf: Add argmatch.
+	* configure.ac: Define ARGMATCH_DIE and ARGMATCH_DIE_DECL.
+	* src/main.c (directories_type): Define.
+	(directories_args, directories_types) Define.
+	All of the above so we can...
+	(main): Use XARGMATCH.
+	(usage): Declare extern, now that argmatch calls it via ARGMATCH_DIE.
+
+2010-04-04  Jim Meyering  <meyering@redhat.com>
+
+	dfa.c: const correctness; and remove useless casts of realloc and malloc
+	* src/dfa.c (icatalloc, icpyalloc, istrstr, enlist): As above.
+	(inboth, dfamust, comsubs): Likewise.
+
+	dfa.c: use a better (unsigned) type for an index: int->unsigned int
+	* src/dfa.c (dfaexec): Use "unsigned int" for a logically unsigned index.
+
+	maint: style: use sizeof VAR, rather than sizeof TYPE, where possible
+	* src/dfa.c (copyset, zeroset): Prefer sizeof EXPR, over sizeof TYPE,
+	for improved readability/maintainability.
+	(equal, parse_bracket_exp, addtok_wc, dfaparse, dfaexec): Likewise.
+
+2010-04-02  Jim Meyering  <meyering@redhat.com>
+
+	dfa.c: use a better (unsigned) type for an index: int->size_t
+	* src/dfa.c (parse_bracket_exp): Use size_t as type of index, not int.
+
+	maint: const-correctness
+	* src/dfa.c (tstbit, copyset, equal, charclass_index): Declare read-only
+	"charclass" parameters to be "const".  No semantic change.
+
+	maint: include <wchar.h> and <wctype.h> unconditionally
+	* src/main.c: Include <wchar.h> and <wctype.h> unconditionally.
+	Their presence/usefulness are assured by gnulib.
+	* src/dfa.c: Likewise.
+	* src/search.h: Likewise.
+
+	maint: MBS_SUPPORT: define to 0/1, not undef/1
+	Prepare to remove many of these #ifdefs.
+	* src/mbsupport.h (MBS_SUPPORT): Define to 0/1, not undef/1.
+	Change each "#ifdef MBS_SUPPORT" to "#if MBS_SUPPORT".  Use this:
+	perl -pi -e 's/ifdef (MBS_SUPPORT)/if $1/' $(g grep -l ifdef.MBS_SUPPO)
+	* src/dfa.c: s/#ifdef MBS_SUPPORT/#if MBS_SUPPORT/
+	* src/dfa.h: Likewise.
+	* src/dfasearch.c: Likewise.
+	* src/kwsearch.c: Likewise.
+	* src/main.c: Likewise.
+	* src/search.h: Likewise.
+	* src/searchutils.c: Likewise.
+
+2010-04-02  Jim Meyering  <meyering@redhat.com>
+
+	maint: use STREQ in place of strcmp
+	perl -pi -e 's/\bstrcmp *\((.*?)\) == 0/STREQ ($1)/' src/main.c
+	perl -pi -e 's/\bstrcmp *\((.*?)\) != 0/!STREQ ($1)/' src/main.c
+
+	* src/dfa.c (STREQ): Define.
+	Use it instead of strcmp.
+	* src/main.c (STREQ): Likewise.
+	* cfg.mk (local-checks-to-skip): Remove sc_prohibit_strcmp,
+	to enable the strcmp-prohibition.
+
+2010-04-02  Jim Meyering  <meyering@redhat.com>
+
+	maint: enable the useless_cpp_parens syntax check
+	* cfg.mk (local-checks-to-skip): Remove sc_useless_cpp_parens.
+	* src/main.c (devices, fillbuf, exit_on_match): Remove useless parens.
+	(print_line_head, grepfile, set_limits, main): Likewise.
+	* src/vms_fab.h: Likewise.
+	* vms/config_vms.h: Likewise.
+	* src/mbsupport.h: Likewise.
+
+	cleanup and improvement: parse command line arguments consistently
+	* src/main.c: Include c-ctype.h, for this:
+	(prepend_args): Use c_isspace, not ISSPACE.
+	This is important so that we parse arguments consistently,
+	and independently of the current locale.
+	* bootstrap.conf (gnulib_modules): Add c-ctype.
+	* src/system.h: Remove IS* definitions here, too.
+	* src/dfasearch.c (WCHAR): Use isalnum, not ISALNUM.
+	* src/kwsearch.c (WCHAR): Likewise.
+	* src/searchutils.c (kwsinit): Use tolower, not TOLOWER.
+
+	cleanup: rely on gnulib's ctype.h functions; remove IS* macros and is_*
+	* src/dfa.c (setbit_case_fold, prednames): Use official names.
+	(IS_WORD_CONSTITUENT, lex): Likewise.
+	(ISALNUM, ISALPHA, ISCNTRL, ISDIGIT, ISGRAPH): Remove definitions.
+	(ISLOWER, ISPRINT, ISPUNCT, ISSPACE, ISUPPER, ISXDIGIT): Likewise.
+	(is_alnum, is_alpha, is_blank, is_cntrl, is_digit, is_graph): Likewise.
+	(is_lower, is_print, is_punct, is_space, is_upper, is_xdigit): Likewise.
+	(isgraph): Likewise.
+
+	build: update gnulib submodule to latest, and adjust
+	* src/main.c (parse_grep_colors): Adjust diagnostics not to trigger
+	the sc_error_message_period and sc_error_message_uppercase
+	syntax-check rules.
+
+	maint: remove all VMS-related code
+	* configure.ac (AC_CONFIG_FILES): Remove vms/Makefile
+	* Makefile.am (SUBDIRS): Remove vms.
+	* src/Makefile.am (EXTRA_DIST): Remove vms_fab.c and vms_fab.h.
+	* src/vms_fab.c, src/vms_fab.h, vms/make.com: Remove files.
+	* vms/Makefile.am, vms/README, vms/config_vms.h: Likewise.
+
+	post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.6.3
+	* NEWS: Record release date.
+
+2010-04-02  Jim Meyering  <meyering@redhat.com>
+
+	grep: avoid used-undefined error with truncated multibyte input
+	* src/dfa.c (addtok_wc): Don't use buf[0] (it's undefined) when
+	wcrtomb returns <= 0.
+
+	MBS_SUPPORT-removal: * src/dfa.c (dfastate):
+
+2010-04-01  Jim Meyering  <meyering@redhat.com>
+
+	maint: avoid unnecessary 2nd getenv("TERM")
+	* src/main.c (main): Don't call getenv("TERM") twice -- in the same
+	expression, even.
+
+	tests: remove all unportable uses of echo
+	* src/main.c: Use printf rather than echo -ne in a comment.
+	* tests/fedora: Use printf (not echo) also in ok/fail functions.
+	* cfg.mk (sc_prohibit_echo_minus_en): New rule, to prohibit
+	any future introduction.
+
+	tests: add explicit requirement for en_US.UTF-8
+	* tests/char-class-multibyte: Use require_en_utf8_locale_,
+	rather than open-coding it.
+	* tests/prefix-of-multibyte: Require the locale explicitly.
+	* tests/fgrep-infloop: Likewise.
+	This fixes test failures that would arise on systems without
+	that particular locale.  Reported by Ludovic Courtès.
+
+	tests: new function, to require an en_US UTF8 locale
+	* tests/init.cfg (require_en_utf8_locale_): New function.
+
+	tests: use printf, not echo -n, echo -e, or any combination
+	* tests/fedora: Using printf is more portable.
+
+	grep: remove unnecessary code
+	* src/main.c (print_line_middle): Now that we use RE_ICASE
+	(enabled in commit 70e23616, "dfa: rewrite handling of multibyte
+	case_fold lexing"), this case-conversion code is useless and wasteful.
+	Remove it.
+
+	doc: fix typo: s/AM_V_AT/AM_V_at/
+	* doc/Makefile.am (egrep.1 fgrep.1): The former has case consistent
+	with its sister variable, AM_V_GEN, but the latter is the one that
+	actually works.
+
+	doc: generated files are best made read-only, ...
+	...to minimize risk of accidentally modifying the generated file
+	rather than its template.  These are tiny, so no risk, but it's
+	a good to be consistent, so generated files are easier to spot.
+	* doc/Makefile.am (egrep.1 fgrep.1): When generating these files,
+	ensure that they too are created read-only.
+
+	doc: generate grep.1 from template
+	* doc/Makefile.am (grep.1): New rule.
+	(CLEANFILES): Add grep.1 to the list.
+	* .gitignore: Add /doc/grep.1
+	* doc/grep.in.1: Replace hard-coded "2.5.1-cvs" with @VERSION@.
+	Update copyright year list.
+	Omit the line-splitting \(co directive so that update-copyright
+	will perform future updates automatically.
+	Egmont Koblinger reported the outdated version string
+	and copyright year list in the man page:
+	http://savannah.gnu.org/bugs/?29390
+
+	doc: prepare to generate grep.1
+	* doc/grep.1: Rename to...
+	* doc/grep.in.1: ...this.
+
+2010-03-31  Eric Blake  <eblake@redhat.com>
+
+	build: avoid another warning
+	Noticed on cygwin:
+	get-mb-cur-max.c: In function 'main':
+	get-mb-cur-max.c:27: error: unused parameter 'argc' [-Wunused-parameter]
+
+	* tests/get-mb-cur-max.c (main): Use argc.
+
+2010-03-31  Paolo Bonzini  <bonzini@gnu.org>
+
+	tests: fix on systems with broken sh
+	* tests/Makefile.am (TESTS_ENVIRONMENT): Adjust coreutils remnants.
+	* tests/bre.sh: Invoke script with $SHELL if defined.
+	* tests/ere.sh: Likewise.
+	* tests/spencer1-locale: Likewise.
+	* tests/spencer1.sh: Likewise.
+
+	tests: improve empty test
+	* tests/empty: Add more tests, note expected failure.
+
+	tests: improve empty test with respect to locales
+	* tests/empty: Add tests for multiple locales.
+
+	grep: fix grep -F against empty string
+	* src/searchutils.c (is_mb_middle): Do not return true for empty matches
+	when p == buf.
+
+	tests: rename empty.sh to empty
+	* tests/empty.sh: Rename to...
+	* tests/empty: ... this.
+	* tests/Makefile.am (TESTS): Adjust.
+
+	tests: convert empty.sh to new style
+	* tests/empty.sh: Convert to init.sh, add 10-second timeout.
+
+	tests: use get-mb-cur-max in char-class-multibyte
+	* tests/char-class-multibyte: Use get-mb-cur-max to detect UTF-8 support.
+	Rewrite previous locale detection code as a grep test.
+
+	tests: fix -Wformat failure
+	* tests/get-mb-cur-max (main): Cast MB_CUR_MAX to int.
+
+2010-03-30  Jim Meyering  <meyering@redhat.com>
+
+	doc: add a "Reply-To" to the suggested announcement mail header
+	* README-release: Add "Reply-To" with the list address,
+	to minimize risk of replies to the other announcement recipients.
+	Suggestion from Eric Blake.
+
+2010-03-29  Jim Meyering  <meyering@redhat.com>
+
+	build: avoid compiler warning when building test program
+	* tests/Makefile.am (AM_CPPFLAGS, AM_CFLAGS, AM_LDFLAGS): Define,
+	so that all the usual C compile-and-link machinery comes into play.
+	* tests/get-mb-cur-max.c: Include "progname.h".
+	Remove unnecessary inclusion of <ctype.h>.
+	Mike Frysinger reported the "implicit decl of set_program_name" warning.
+
+	build: detect PCRE support also when <pcre/pcre.h> is the header
+	* m4/pcre.m4: Also check for <pcre/pcre.h>.
+	* src/pcresearch.c: Include <pcre/pcre.h>, if needed.
+	Guard inclusions with HAVE_PCRE_H and HAVE_PCRE_PCRE_H, not HAVE_LIBPCRE.
+	* NEWS (Bug fixes): Mention it.
+	Dmitry V. Levin reported that PCRE support was not detected
+	on systems with <pcre.h> not in the default include path.
+
+	post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.6.2
+	* NEWS: Record release date.
+
+2010-03-29  Eric Blake  <eblake@redhat.com>
+
+	build: avoid warnings on cygwin
+	* lib/savedir.c (isdir): Avoid shadowing a declaration.
+	* src/main.c (get_nondigit_option): Cast away const to avoid
+	compiler warning.
+
+	maint: ignore new test executable
+	* .gitignore: Enhance.
+
+2010-03-29  Jim Meyering  <meyering@redhat.com>
+
+	doc: consolidate redundant-looking entries
+	* NEWS: Consolidate the two --include/exclude-related entries.
+	Suggested by Eric Blake.
+
+2010-03-29  Paolo Bonzini  <bonzini@gnu.org>
+
+	tests: use $(...) consistently
+	* tests/backref.sh: Use `...' instead of ``...'' in comments.
+	* tests/bre.awk: Use $(...) instead of `...`.
+	* tests/ere.awk: Use $(...) instead of `...`.
+	* tests/euc-mb: Use $(...) instead of `...`.
+	* tests/fmbtest: Use $(...) instead of `...`.
+	* tests/foad1: Use $(...) instead of `...`.
+	* tests/pcre-z: Use $(...) instead of `...`.  Quote output of grep.
+	* tests/spencer1-locale.awk: Use $(...) instead of `...`.
+	* tests/spencer1.awk: Use $(...) instead of `...`.
+	* tests/yesno.sh: Use $(...) instead of `...`.
+
+2010-03-29  Jim Meyering  <meyering@redhat.com>
+
+	build: make doc/Makefile.am cleaner and more robust
+	* doc/Makefile.am (egrep.1 fgrep.1): Generate robustly, i.e.,
+	do not redirect directly to $@.
+	Use $(AM_V_GEN).
+	Do not distribute intermediate files like fgrep.man and egrep.man.
+	Likewise, do not use them to generate their %.1 images.
+	Instead, generate the .1 files directly.
+
+2010-03-29  Paolo Bonzini  <bonzini@gnu.org>
+
+	tests: add program to detect locales
+	* tests/Makefile.am (check_PROGRAMS): Add get-mb-cur-max.
+	* tests/get-mb-cur-max.c: New.
+	* tests/euc-mb: Use it.  Fail if the former detection test fails.
+	* tests/sjis-mb: Use it.  Fail if the former detection test fails.  Expand
+	comments.
+
+2010-03-29  Paolo Bonzini  <bonzini@gnu.org>
+
+	tests: add tests for SJIS character sets
+	The attached test will be skipped unless (on a glibc system) you run
+	something like
+
+	  mkdir /usr/lib/locale/ja_JP.SHIFT_JIS
+	  zcat /usr/share/i18n/charmaps/SHIFT_JIS.gz | \
+	    localedef \
+	      -f - \
+	      -i /usr/share/i18n/locales/ja_JP \
+	      /usr/lib/locale/ja_JP.SHIFT_JIS
+
+	* tests/Makefile.am: Add sjis-mb.
+	* tests/sjis-mb: New.
+
+2010-03-29  Paolo Bonzini  <bonzini@gnu.org>
+
+	grep -F: fix a bug with SJIS character sets
+	Commit db9d6 would erroneously skip matches in SJIS character sets.  In
+	this character set low bytes (i.e. ASCII bytes) are also valid second
+	bytes in a double-byte character, so you have to continue looking for
+	a match, even if you match in the middle of a double-byte character.
+
+	* src/kwsearch.c: Ensure that beg is advanced by at least one byte,
+	but do not fail immediately after matching in the middle of a double-byte
+	character.
+
+2010-03-28  Bruno Haible  <bruno@clisp.org>
+
+	build: update after change in gnulib's lib-ignore module
+	* src/Makefile.am (AM_LDFLAGS): Define.  Use gnulib's new
+	$(IGNORE_UNUSED_LIBRARIES_CFLAGS).
+
+2010-03-28  Jim Meyering  <meyering@redhat.com>
+
+	tests: disable new texinfo-acronym syntax-check from gnulib
+	* cfg.mk (local-checks-to-skip): Add new sc_texinfo_acronym, to skip it.
+
+2010-03-28  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	tests: exercise fix for improper match of incomplete MB char prefix
+	* tests/prefix-of-multibyte: New file.
+	* tests/Makefile.am (TESTS): Add it.
+
+2010-03-28  Jim Meyering  <meyering@redhat.com>
+
+	grep -F: fix a multi-byte erroneous-match-in-middle bug
+	Just as Perl prints nothing in this case,
+	  printf '\357\274\241\n' | perl -CIO -lne '/\357/ and print'
+
+	grep should also print nothing when used as follows.
+	However, these would mistakenly match with grep prior to 2.6.2:
+	  printf '\357\274\241\n' | LC_ALL=en_US.UTF-8 src/grep -F $'\357'
+	  printf '\357\274\241\n' | LC_ALL=en_US.UTF-8 src/grep -F $'\357\274'
+
+	* src/searchutils.c (is_mb_middle): New parameter: the length of the
+	match, in bytes, as determined by kwsexec.  Use this to detect when
+	the nominal match found by kwsexec must be skipped because it is for
+	an incomplete multi-byte character that is a prefix of a character
+	in the input.
+	* src/dfasearch.c (EGexecute): Update caller.
+	* src/kwsearch.c (Fexecute): Likewise.
+	* src/search.h: Update prototype.
+	* NEWS (Bug fixes): Mention it.
+	Report and analysis by Norihiro Tanaka.
+
+2010-03-28  Norihiro Tanaka  <noritnk@kcn.ne.jp>
+
+	tests: add tests for the fgrep-infloop bug
+	* tests/init.cfg (require_timeout_): New function.
+	* tests/fgrep-infloop: New file.  Test for the above fix.
+	* tests/Makefile.am (TESTS): Add it.
+
+2010-03-28  Jim Meyering  <meyering@redhat.com>
+
+	grep -F: avoid infinite loop when searching for incomplete MB character
+	Searching for an incomplete non-prefix of a multi-byte character
+	should find no match.
+
+	  Just as these print nothing,
+	    printf '\357\274\241\357\274\241\n' \
+	      | perl -CIO -ne '/\241\357/ and print'
+	    printf '\357\274\241\n' | perl -CIO -ne '/\274\241/ and print'
+	    printf '\357\274\241\n' | perl -CIO -ne '/\241/ and print'
+	    printf '\357\274\241\n' | perl -CIO -ne '/\274/ and print'
+
+	  These should also print nothing, but with grep-2.6 and grep-2.6.1,
+	  they would infloop:
+	    printf '\357\274\241\n' | LC_ALL=en_US.UTF-8 src/grep -F $'\241'
+	    printf '\357\274\241\n' | LC_ALL=en_US.UTF-8 src/grep -F $'\274'
+	    printf '\357\274\241\n' | LC_ALL=en_US.UTF-8 src/grep -F $'\274\241'
+
+	* src/kwsearch.c (Fexecute): Don't infloop when searching for
+	an incomplete non-prefix part of a multi-byte character.
+	* NEWS (Bug fixes): Mention it.
+	Reported and diagnosed by Norihiro Tanaka.
+
+2010-03-28  Jim Meyering  <meyering@redhat.com>
+
+	tests: rename: fmbtest.sh -> fmbtest
+	* tests/fmbtest.sh: Rename to ...
+	* tests/fmbtest: ...this, dropping the .sh suffix.
+	* tests/Makefile.am (TESTS): Reflect renaming.
+
+	tests: convert fmbtest.sh to use init.sh
+	* tests/fmbtest.sh: Use init.sh and adapt accordingly:
+	Use "grep", not ${GREP}.  Use Exit, not exit.
+
+	tests: also exercise the --include + glob path
+	* tests/include-exclude: Exercise Javier's fix.
+
+2010-03-28  Javier Villavicencio  <the_paya@gentoo.org>
+
+	grep -r: fix --include with globs, too
+	The previous fix addressed only the non-glob case.
+	* src/main.c (main): Use add_exclude's EXCLUDE_WILDCARDS option,
+	to enable the use of fnmatch with --include=GLOB.
+	gnulib: Update to latest, for the fixed exclude.c.
+
+2010-03-28  Jim Meyering  <meyering@redhat.com>
+
+	grep -r: fix --include with non-globs
+	* lib/savedir.c (savedir): Fix logic error.  Introduced by commit
+	bf3bd92c, "build: adapt to the newer exclude API we now get from gnulib"
+	* tests/include-exclude: Test for this bug by exercising --include, too.
+	* NEWS (Bug fixes): Mention it.
+	Reported by Philipp Kohlbecher in http://savannah.gnu.org/bugs/?29358
+
+2010-03-27  Jim Meyering  <meyering@redhat.com>
+
+	kwset: correct comments; require non-NULL kwsmatch argument
+	* src/kwset.c (kwsexec): Correct comments.  This function has been
+	returning an offset, not a pointer, for 9 years.
+	Do not test for kwsmatch == NULL.  All callers pass non-NULL.
+	(cwexec): Likewise.
+	* src/kwset.h (kwsexec): Mark the 4th parameter, kwsmatch, as non-NULL.
+	Include "arg-nonnull.h".
+
+	build: add -I$(top_builddir)/lib so we also find generated .h files
+	* src/Makefile.am (AM_CPPFLAGS): Rename from INCLUDES to avoid
+	warning from automake -Wall.
+	Add -I$(top_builddir)/lib, so we find generated .h files like
+	getopt.h in a non-srcdir build.
+
+	build: remove superfluous LOCALEDIR definition
+	* src/Makefile.am (INCLUDES): Remove unnecessary definition of
+	LOCALEDIR here.  Now, it's defined via gnulib's configmake.h.
+	* src/system.h: Include "configmake.h" for its LOCALEDIR definition.
+
+	grep: don't segfault upon use of --include or --exclude* options
+	* lib/savedir.c (isdir1): Fix fatal typo: deref "dir" argument,
+	not the global (initially-NULL) "path".  Reported by Standish Parsley.
+	* tests/include-exclude: New file.
+	* tests/Makefile.am (TESTS): Add it.
+	* NEWS (Bug fixes): Mention it.
+
+2010-03-26  Jim Meyering  <meyering@redhat.com>
+
+	tests: rename: foad1.sh -> foad1
+	* tests/foad1.sh: Rename to ...
+	* tests/foad1: ...this, dropping the .sh suffix.
+	* tests/Makefile.am (TESTS): Reflect renaming.
+
+	tests: convert foad1.sh to use init.sh
+	This fixes a spurious test failure when "make check" is run with
+	certain envvars set, e.g., "make check GREP_COLOR=always"
+	* tests/foad1.sh: Use init.sh and adapt accordingly:
+	Use "grep", not ${GREP}.  Test VERBOSE against "yes", not "1",
+	to be consistent with init.sh.
+	Use Exit, not exit.
+	Reported by Nelson H. F. Beebe.
+
+	tests: insulate tests from envvar settings
+	* tests/init.cfg (vars_): Unset each envvar that can affect how
+	grep works.  This protects only those tests that have been
+	converted to use init.sh.
+
+2010-03-25  Eric Blake  <eblake@redhat.com>
+
+	maint: ignore 'make dist pdf' droppings
+	* .gitignore: Add more exemptions.
+
+2010-03-25  Jim Meyering  <meyering@redhat.com>
+
+	tests: avoid spurious test failure due to lack of a French UTF8 locale
+	* tests/init.cfg: New file.  If either $LOCALE_FR or $LOCALE_FR_UTF8
+	is set to "none", reset it to the empty string.
+	Reported by Mike Frysinger and Sven Joachim.
+	* tests/Makefile.am (EXTRA_DIST): Add init.cfg.
+
+	build: do not use pkg-config to test for PCRE support
+	* configure.ac: Do not use PKG_PROG_PKG_CONFIG or PKG_CHECK_MODULES.
+	Do not modify CPPFLAGS; that belongs to those who invoke make.
+	Instead, use autoconf's AC_CHECK_HEADERS and AC_SEARCH_LIBS via the
+	new macro, gl_FUNC_PCRE, defined in...
+	* m4/pcre.m4 (gl_FUNC_PCRE): New macro, to handle pcre-related
+	configure-time tests.
+	* src/Makefile.am (grep_LDADD): Use LIB_PCRE, not PCRE_LIBS.
+	* src/pcresearch.c: Test HAVE_LIBPCRE via "#if", not "#ifdef".
+	All other cpp tests of this symbol used "#if".
+	Prompted by a suggestion from Bruno Haible.
+	* NEWS (Build-related): Mention this.
+
+	doc: correct and amend NEWS entries for 2.6.1
+	* NEWS (Bug fixes): Correct character ranges bug description.
+	Add an example from Dmitry V. Levin.
+	Add that the word-with-backref bug was introduced in 2.5.1.
+	* cfg.mk (old_NEWS_hash): Update to match.
+
+	post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.6.1
+	* NEWS: Record release date.
+
+2010-03-25  Tony Abou-Assaleh  <taa@acm.org>
+
+	tests: use awk's -v option more portably
+	* tests/spencer1-locale: Add a space between awk's "-v" option and
+	the following VAR=value string, to avoid test failure on Mac OS X.
+
+2010-03-25  Norihirio Tanaka  <noritnk@kcn.ne.jp>
+
+	dfa/grep: fix compilation with MBS_SUPPORT
+	* src/dfa.c (cur_mb_len): Initialize to 1 and always make it available.
+	(setbit_case_fold): Do not use wint_t in prototype if !MBS_SUPPORT.
+	(parse_bracket_exp): Fix compilation with !MBS_SUPPORT.
+	* src/kwsearch.c (kwsinit): Do not use mbtolower and MB_CUR_MAX
+	if !MBS_SUPPORT.
+	* src/searchutils.c (kwsinit): Do not refer to MB_CUR_MAX if !MBS_SUPPORT.
+
+	* tests/char-class-multibyte: Skip if UTF-8 matching does not work.
+	* tests/fmbtest.sh: Likewise.
+
+2010-03-25  Jim Meyering  <meyering@redhat.com>
+
+	build: avoid warnings about unnecessary use of "return"
+	* src/grep.c (Gcompile, Ecompile, Acompile): Do not "return X"
+	from a function returning void, not even when X itself is a
+	function returning void.  This avoids warnings from Sun Studio 11
+	reported by Dagobert Michelsen.
+	* src/egrep.c (Ecompile): Likewise.
+
+2010-03-25  Norihirio Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: fix printing when -w is used and regex is needed for matching
+	* NEWS: Document bugfix.
+	* src/dfasearch.c (EGexecute): After assess_pattern_match len, is either
+	invalid or end-beg; jump to success.
+	* tests/Makefile.am (TESTS): Add new test.
+	* tests/backref-word: New.
+
+2010-03-25  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: fix single byte character ranges
+	* src/dfa.c (in_coll_range): Fix ordering for second strcoll.  Reported
+	by Dmitry V. Levin.
+	* tests/spencer1-locale.awk: Also test single-byte character sets.
+	* NEWS: Add a note about this bugfix.
+	* THANKS: Add Dmitry.
+
+2010-03-25  Norihirio Tanaka  <noritnk@kcn.ne.jp>
+
+	grep: reset state after truncated or invalid multibyte sequences
+	* src/searchutils.c (is_mb_middle): When treating an invalid sequence
+	or a truncated multibyte character as a single byte character, reset
+	mbstate
+
+	grep: do lowercase conversion in print_line_middle only for single-byte case
+	* src/main.c (print_line_middle): Restrict match_icase code
+	to MB_CUR_MAX == 1.  Adjust comments.
+
+2010-03-25  Jim Meyering  <meyering@redhat.com>
+
+	tests: provide framework_failure_ function
+	The shell function "framework_failure" was called in the unusual
+	event that some fundamental test set-up operation would fail.
+	However it was not defined.  Define it, but with a trailing underscore
+	to impinge less on the test writer's name space.  Adjust all uses.
+	* tests/init.sh (framework_failure_): New function.
+	* tests/case-fold-backref: s/framework_failure/framework_failure_/
+	* tests/case-fold-char-class: Likewise.
+	* tests/case-fold-char-range: Likewise.
+	* tests/case-fold-char-type: Likewise.
+	* tests/char-class-multibyte: Likewise.
+	* tests/dfaexec-multibyte: Likewise.
+	* tests/max-count-vs-context: Likewise.
+	* tests/word-multi-file: Likewise.
+
+2010-03-24  Jim Meyering  <meyering@redhat.com>
+
+	doc: tweak THANKS
+	* THANKS: Update Arnold's name and address, per request.
+
+	portability: use gnulib's lseek wrapper
+	* bootstrap.conf (gnulib_modules): Use gnulib's lseek wrapper,
+	for improved portability.  lseek does not fail with ESPIPE on
+	pipes on some systems.
+
+	build: avoid link failure on Solaris 8
+	* bootstrap.conf (gnulib_modules): Add wctob.
+	* NEWS (Portability): Mention this.
+	Reported by Dagobert Michelsen in <http://sv.gnu.org/bugs/?29325>.
+
+2010-03-24  Petr Písař  <petr.pisar@atlas.cz>
+
+	doc: translate new --help message
+	* src/main.c: Translate "after_options".
+
+2010-03-24  Jim Meyering  <meyering@redhat.com>
+
+	doc: NEWS make it clear that the bug was introduced in 2.6
+	* NEWS: Clarify.
+
+2010-03-24  Paolo Bonzini  <bonzini@gnu.org>
+
+	tests: fix char-class-multibyte
+	* tests/char-class-multibyte: Make it pass.
+
+2010-03-23  Jim Meyering  <meyering@redhat.com>
+
+	build: avoid compilation failure when MBS_SUPPORT not defined
+	* src/dfa.c (setbit_case_fold) [!MBS_SUPPORT]: Fix curly brace mismatch.
+
+2010-03-23  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: fix sigsegv on multibyte character classes
+	Reported by Jaroslav Å karvada <jskarvad@redhat.com>.  This is
+	unfortunate.  grep needs an automatic testcase generator.
+
+	* NEWS: Document bug.
+	* THANKS: Mention reporter.
+	* src/dfa.c (set_bit_casefold): Change type of first argument for
+	self-documentation.
+	(parse_bracket_exp): Fix call.
+	* tests/Makefile.am: Add new testcase.
+	* tests/char-class-multibyte: New testcase.
+
+2010-03-23  Jim Meyering  <meyering@redhat.com>
+
+	post-release administrivia
+	* NEWS: Add header line for next release.
+	* .prev-version: Record previous version.
+	* cfg.mk (old_NEWS_hash): Auto-update.
+
+	version 2.6
+	* NEWS: Record release date.
+
+	build: avoid warnings: tell gcc and clang that dfaerror never returns
+	* src/dfa.h (__attribute__): Define.
+	(dfaerror): Declare with the "noreturn" attribute.
+	* src/dfasearch.c (dfaerror): Add an unreachable use of abort.
+
+2010-03-22  Eric Blake  <eblake@redhat.com>
+
+	build: fix cygwin build
+	Portions of gnulib depend on -lintl, and cygwin does not allow
+	lazy linking.
+
+	* src/Makefile.am (LDADD): Include libraries in correct order.
+
+2010-03-22  Paolo Bonzini  <bonzini@gnu.org>
+
+	grep: remove --mmap
+	mmap is a bad idea for sequentially accessed file because it will cause
+	a page fault for every read page.  Just consider it a failed experiment,
+	and ignore --mmap while accepting it for backwards compatibility.
+
+	* configure.ac (AC_FUNC_MMAP): Remove.
+	* doc/grep.texi (Other options): Say --mmap is ignored.
+	* src/grep.c (mmap_option): Remove.
+	(long_options): Do not reference it.
+	(bufmapped, initial_bufoffset): Remove.
+	(reset, fillbuf): Remove HAVE_MMAP code.
+	(grepfile): Remove bufmapped reference.
+	(usage): Say --mmap is ignored.
+
+2010-03-22  Paolo Bonzini  <bonzini@gnu.org>
+
+	grep: rename files for intuitiveness
+	* Makefile.am (libgrep_a_SOURCES, grep_SOURCES, egrep_SOURCES,
+	fgrep_SOURCES): Adjust.
+	* grep.c: Rename to main.c.
+	* esearch.c: Rename to egrep.c.
+	* fsearch.c: Rename to fgrep.c.
+	* gsearch.c: Rename to grep.c.
+
+	grep: kill GREP_PROGRAM/EGREP_PROGRAM/FGREP_PROGRAM
+	* NEWS: Document slight semantic change.
+	* TODO: #ifdefs are gone.
+	* po/POTFILES.in: Update.
+	* src/Makefile.am (grep_SOURCES, egrep_SOURCES, fgrep_SOURCES): Remove
+	grep.c/egrep.c/fgrep.c.
+	(noinst_LIBRARIES): Change libsearch.a to libgrep.a.
+	(libsearch_a_SOURCES): Rename to libgrep_a_SOURCES, add grep.c
+	(LDADD): Change libsearch.a to libgrep.a.
+	* src/esearch.c: Add before_options and after_options.
+	* src/fsearch.c: Likewise.
+	* src/gsearch.c: Likewise.
+	* src/grep.c (short_options, long_options): Remove GREP_PROGRAM
+	special-casing.
+	(usage): Use before_options and after_options, look at matchers.
+	(setmatcher): Merge with install_matcher.
+	(main): Call setmatcher (NULL) instead of install_matcher.
+	* src/grep.h (GREP_PROGRAM): Remove.
+	(before_options, after_options): Add.
+
+	thank Eric Blake
+	* THANKS: Add Eric Blake, who reported the warning fixed by 774d0ee.
+
+	grep: libify *search.c
+	* src/Makefile.am (libsearch_a_SOURCES): Add dfasearch.c, kwsearch.c,
+	pcresearch.c.
+	* src/esearch.c, src/fsearch.c, * src/gsearch.c: Only include search.h.
+	* src/dfasearch.c (GEAcompile, EGexecute): Export.
+	* src/kwsearch.c (Fcompile, Fexecute): Export.
+	* src/pcresearch.c (Pcompile, Pexecute): Export.
+	* src/search.h: Add new exported functions.
+
+	grep: prepare for libification of *search.c
+	* src/dfasearch.c (Ecompile): Remove.
+	* src/esearch.c: Place it here...
+	* src/gsearch.c: ... and here.
+
+	grep: split search.c
+	* po/POTFILES.in: Update.
+	* src/Makefile.am (grep_SOURCES, egrep_SOURCES, fgrep_SOURCES): Move
+	kwset.c and dfa.c to libsearch.a.  Add searchutils.c there too.
+	* src/search.h, src/dfasearch.c, src/pcresearch.c, src/kwsearch.c,
+	src/searchutils.c: New files, split out of src/search.c.
+	* src/esearch.c, src/fsearch.c: Include the new files instead of search.c.
+	* src/gsearch.c: Likewise, plus move Gcompile/Acompile here.
+
+	grep: remove one #ifdef
+	* search.c (GEAcompile) [EGREP_PROGRAM]: Use common code.  Inline IF_BK.
+
+2010-03-22  Paolo Bonzini  <bonzini@gnu.org>
+
+	grep: eliminate {COMPILE,EXECUTE}_{RET,ARGS,FCT}
+	Modern compilers warn about type mismatches.
+
+	* src/grep.c (do_execute): Write full declaration.
+	* src/grep.h (COMPILE_RET, COMPILE_ARGS, COMPILE_FCT, EXECUTE_RET,
+	EXECUTE_ARGS, EXECUTE_FCT): Remove.
+	(compile_fp_t, execute_fp_t): Write full declaration.
+	* src/search.c (GEAcompile, Gcompile, Acompile, Ecompile, EGexecute,
+	Fcompile, Fexecute, Pcompile, Pexecute): Write full declaration.
+
+2010-03-22  Paolo Bonzini  <bonzini@gnu.org>
+
+	grep: make egrep/fgrep use struct matcher
+	* Makefile.am (grep_SOURCES): Add gsearch.c.
+	(EXTRA_DIST): Add search.c.
+	* esearch.c (matchers): New.
+	* fsearch.c (matchers): New.
+	* gsearch.c: New.
+	* search.c (matchers): Remove.
+	* grep.c: Always compile most !GREP_PROGRAM sections.
+	(main): Use first matcher if none is explicitly provided.  Remove
+	"default" matcher.
+	* grep.h (struct matcher): Adjust comments.
+
+	grep: change struct matcher termination
+	* src/grep.c (setmatcher): Look for NULL matchers[i].name.
+	* src/grep.h (struct matcher): Change name to pointer.  Adjust comments.
+	* src/search.c (matchers): Terminate with three NULLs.
+
+	grep: remove one #ifdef
+	* search.c (Ecompile): Always go through GEAcompile to use same code path
+	for both grep and egrep.
+
+	grep: remove getpagesize.h
+	* src/getpagesize.h: Remove.
+	* src/Makefile.am (noinst_HEADERS): Remove getpagesize.h.
+
+2010-03-21  Jim Meyering  <meyering@redhat.com>
+
+	build: use the fcntl-h module, not "fcntl"
+	* bootstrap.conf (gnulib_modules): We might need fcntl.h somewhere,
+	but don't use the fcntl function.  Reported by Bruno Haible.
+
+	build: avoid link failure on systems using gnulib's fcntl but not open
+	* bootstrap.conf (gnulib_modules): Using gnulib's fcntl module
+	and including <fcntl.h>, but not also using gnulib's "open" module
+	would result in link failure due to references to rpl_open
+	on systems requiring the replacement (e.g., Cygwin and Darwin).
+
+	build: avoid compilation failure on systems using rpl_open
+	This new build failure has arisen as a result of using gnulib's
+	"fcntl" module.  Now that an inadequate "open" syscall is replace
+	by gnulib's wrapper, it is essential to include <fcntl.h>.
+	* src/grep.c: Include <fcntl.h>.
+	This is required, for grepfile's use of open, at least on
+	Cygwin and Darwin.
+
+	maint: use gnulib's fcntl module, just in case
+	* bootstrap.conf (gnulib_modules): Add fcntl.
+	Grep uses at least O_BINARY, which may be defined therein.
+
+	maint: remove TYPE_* definitions from src/system.h
+	* src/system.h (TYPE_MAXIMUM, TYPE_MINIMUM, TYPE_SIGNED): Remove
+	definitions.  They are provided by intprops.h.
+	* src/grep.c: Include "intprops.h"
+	* bootstrap.conf (gnulib_modules): Add intprops.
+
+	maint: alphabetize #include directives
+	* src/grep.c: Alphabetize #include directives.
+
+2010-03-20  Jim Meyering  <meyering@redhat.com>
+
+	build: stop using gnulib's memmove module
+	* bootstrap.conf (gnulib_modules): Remove obsolete module: memmove
+
+	build: reinstate gnulib's fcntl-h-tests
+	* bootstrap.conf (gnulib_tool_option_extras): Do not avoid
+	the fcntl-h-tests.  I cannot reproduce the failure.
+
+2010-03-20  Eric Blake  <eblake@redhat.com>
+
+	build: allow compilation on cygwin
+	Gnulib is incompatible with -Wunused-macros.  Addtionally,
+	cygwin 1.7.1 coupled with --enable-gcc-warnings tripped on:
+
+	grep.c: In function 'print_line_middle':
+	grep.c:805: error: array subscript has type 'char' [-Wchar-subscripts]
+	grep.c: In function 'main':
+	grep.c:1833: error: 'optarg' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
+	grep.c:1834: error: 'optind' redeclared without dllimport attribute after being referenced with dll linkage
+
+	* configure.ac (GNULIB_WARN_FLAGS): Disable -Wunused-macros.
+	* src/grep.c (print_line_middle): Use correct type to tolower.
+	(main): Drop useless redeclarations.
+	* .gitignore: Ignore more built files.
+
+2010-03-20  Jim Meyering  <meyering@redhat.com>
+
+	tests: ensure that all programs handle [b-a] consistently
+	* tests/reversed-range-endpoints: New test.
+	* tests/Makefile.am (TESTS): Add it.
+
+2010-03-20  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+	This pulls in the latest regex module from gnulib, including a fix
+	to make it honor the RE_NO_EMPTY_RANGES syntax bit.
+
+	tests: temporarily disable irrelevant-to-grep failing C++ fcntl-h-tests
+	* bootstrap.conf (gnulib_tool_option_extras): Temporarily add
+	--avoid=fcntl-h-tests, until the C++ part of that test is fixed.
+
+2010-03-20  Jim Meyering  <meyering@redhat.com>
+
+	reject reversed-endpoint ranges, with all regex variants
+	* src/search.c: Add RE_NO_EMPTY_RANGES to the syntax bits
+	in three places, so that all of grep, egrep, and grep -E reject
+	a range with reversed endpoints like '[b-a]'.  This is required,
+	when using the latest version of gnulib's regex module, since it
+	now honors the RE_NO_EMPTY_RANGES flag, rather than acting as if
+	it were always set.
+	Based on a change by Matthew Burgess.
+
+2010-03-19  Jim Meyering  <meyering@redhat.com>
+
+	maint: correct macro parameter parentheses
+	* src/dfa.c (FETCH_WC, FETCH): Parenthesize macro parameters.
+
+2010-03-19  Paolo Bonzini  <bonzini@gnu.org>
+
+	tests: change help-version to per-program functions
+	* help-version: Change each *_args variable to a *_setup function.
+
+	dfa: fix wchar_t/wint_t type mismatch
+	* src/dfa.c (FETCH_WC): Pass a local wchar_t variable to mbrtowc.
+	(FETCH): Rename temporary second argument to FETCH_WC.
+	(parse_bracket_exp): Always use FETCH_WC.
+
+2010-03-19  Jim Meyering  <meyering@redhat.com>
+
+	doc: add README-prereq, referenced from README-hacking
+	* README-prereq: New file.  Cloned from coreutils, s/coreutils/grep/
+	Reported by Tony Abou-Assaleh.
+
+2010-03-19  Arnold Robbins  <arnold@skeeve.com>
+
+	maint: sync dfa comments from gawk
+	* src/dfa.h (struct dfa) [newlines]: Amend comment.
+	* src/dfa.c: Update copyright year list to include gawk's.
+
+2010-03-17  Jim Meyering  <meyering@redhat.com>
+
+	maint: remove obsolete "cvs-clean" make target
+	* Makefile.am (cvs-clean): Remove obsolete target.
+
+2010-03-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: initialize struct mbcset using memset
+	* src/dfa.c (parse_bracket_exp): Use memset to initialize workmbc.
+
+	dfa: spell out "unsigned int"
+	* dfa.c (setbit, tstbit, clrbit, setbit_case_fold, lex, dfaoptimize,
+	free_mbdata): Put "int" after unsigned.
+	* dfa.h (struct position, struct dfa): Likewise.
+
+2010-03-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: optimize simple character sets under UTF-8 charsets
+	Only use a bitset when possible without involving MBCSET.  Testcase:
+	   yes 'the quick brown fox jumps over the lazy dog' | sed 100000q | \
+	     time grep -c [ABCDEFGHIJKLMNOPQRSTUVWXYZ,]
+
+	Before: 51ms (best of three runs); after: 16ms(best of three runs).
+
+	* src/dfa.c (parse_bracket_exp): For simple bracket expressions
+	under UTF-8, use a CSET.
+
+2010-03-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: speed up handling of brackets
+	This patch has two sides.  One is to fold the parsing of brackets in the
+	single- and multi-byte cases.  The second is to leverage this change,
+	and use a bitset to test for single-byte characters in the charset.
+	Splitting the two would be very hard.
+
+	Testcase:
+	   yes 'the quick brown fox jumps over the lazy dog' | sed 100000q | \
+	     time grep -c [ABCDEFGHIJKLMNOPQRSTUVWXYZ,]
+
+	Before: 59ms (best of three runs); after: 51ms (best of three runs).
+	Nice, but mostly providing infrastructure for the next patch.
+
+	* src/dfa.c (setbit_case_fold): Try applying towlower/towupper.
+	(looking_at): Remove.
+	(FETCH_WC): New.
+	(fetch_wc): Merge into FETCH_WC [MBS_SUPPORT].
+	(FETCH) [MBS_SUPPORT]: Call FETCH_WC.
+	(prednames, find_pred, is_blank and other predicates): Move above,
+	remove K&R syntax support.
+	(parse_bracket_exp): New name of parse_bracket_exp_mb, rewritten to
+	include single-byte character set parsing of brackets.
+	(lex): Adjust for fetch_wc->FETCH_WC change, remove single-byte
+	character set parsing of brackets.
+	(match_mb_charset): Test against work_mbc->cset.
+	* src/dfa.h (struct mb_char_classes): Add cset.
+
+2010-03-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	syntax-check: remove space-tab exception
+	* .x-sc_space_tab: Remove.
+	* src/dfa.c: Fix space-tab occurrence.
+
+	THANKS: fix Jim Meyering's email address
+	* THANKS: Jim is now with Red Hat.
+
+	dfa: add missing function
+	* src/dfa.c (using_utf8): New.
+	(addtok_wc, free_mbdata, dfaoptimize) [!MBS_SUPPORT]: Do not define.
+	(dfacomp) [!MBS_SUPPORT]: Do not call dfaoptimize.
+
+	tests: fix typo
+	* fedora: Fix typo.
+
+	tests: use Exit
+	* euc-mb: exit with "Exit 0".
+
+	grep: remove more register keywords
+	* dosbuf.c: Remove register keywords.
+	* grep.c: Remove register keywords.
+	* kwset.c: Remove register keywords.
+	* search.c: Remove register keywords.
+
+2010-03-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: run simple UTF-8 regexps as a single-byte character set
+	This provides a speedup whenever fgrep is "almost" sufficient but
+	not quite (e.g. grep ^abc).  This affects test cases such as
+	https://savannah.gnu.org/bugs/?29117, which are already worked around
+	by the line-by-line matching patch c32c04; without that patch the
+	speedup can reach 1000x even on non-contrived testcases.
+
+	* src/dfa.c (dfaoptimize): New.
+	(dfacomp): Call it.
+
+2010-03-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	tests: fix syntax-check failures
+	* tests/case-fold-backref: Use "foo" instead of "the".
+	* tests/dfaexec-multibyte: Remove trailing blanks.
+
+2010-03-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	grep: remove check_multibyte_string, fix non-UTF8 missed match
+	Avoid computing ahead something that can be computed lazily as efficiently
+	(or more efficiently in the case of UTF-8, though this is left as TODO).
+	At the same time, "soften" the rejection condition for matching in the
+	middle of a multibyte sequence to fix bug 23814.
+
+	Multibyte "grep -i" would still be very slow if it wasn't for the workaround
+	patch c32c042 (grep: match multibyte charsets line-by-line when using -i,
+	2010-03-08).
+
+	* NEWS: Document bugfix.
+	* src/search.c (check_multibyte_string): Rewrite as...
+	(is_mb_middle): ... this.
+	(EGexecute, Fexecute): Adjust.
+	* tests/Makefile.am (TESTS): Add euc-mb.
+	* tests/euc-mb: New testcase.
+
+2010-03-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: cache MB_CUR_MAX for dfaexec
+	* src/dfa.c (state_index, dfaexec): Use d->mb_cur_max.
+	(dfainit): Initialize it.
+	(free_mbdata): New, extracted out of dfafree.
+	(dfafree): Use it.
+
+	dfa: improve documentation of struct dfa
+	* src/dfa.h (struct dfa): Reword some comments.
+
+	tests: factor name of output files into a variable
+	* tests/case-fold-backref, tests/case-fold-char-class,
+	tests/case-fold-char-range, tests/case-fold-char-type,
+	tests/dfaexec-multibyte: Use a variable for the output filename,
+	as it is common to the grep and compare invocations.
+
+	tests: use different output files to simplify reading failed .log files
+	* tests/case-fold-backref, tests/case-fold-char-class,
+	tests/case-fold-char-range, tests/case-fold-char-type: Use a different
+	name for each output file from grep.
+	* tests/dfaexec-multibyte: Likewise, and merge some grep invocations.
+
+	tests: add another grep -i testcase, from bug 16179
+	* tests/case-fold-backref: New.
+	* tests/Makefile.am (TESTS): Add it.
+
+2010-03-16  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: rewrite handling of multibyte case_fold lexing
+	Let dfacomp do the folding to lowercase of multibyte input strings,
+	and remove it from grep.c.  Input strings to kwset.c are still folded
+	outside kwset.c, so we still need to do mbtolower in search.c.
+
+	* NEWS: Document bugfixes.
+	* .x-sc_cast_of_argument_to_free: Remove.
+	* src/dfa.c (wctok, addtok_wc): New.
+	(cur_mb_index, update_mb_len_index): Remove.
+	(FETCH): Do not call it.
+	(parse_bracket_exp_mb) [GREP]: Disable case-folding of ranges and
+	characters.
+	(addtok): Extract part to...
+	(addtok_mb): ... this new function.
+	(lex): Call fetch_wc in the main loop for MB_CUR_MAX > 1.  Return WCHAR
+	for normal characters if MB_CUR_MAX > 1.
+	(atom): Handle WCHAR instead of treating multibyte characters specially.
+	Do case folding of multibyte characters here.
+	(dfacomp): Remove case_fold special casing.
+	* src/dfa.h (WCHAR): New.
+	* src/grep.c (mb_icase_keys): Remove.
+	(main): Do not call it.
+	* src/search.c (kwsinit): Init transition table only for MB_CUR_MAX == 1.
+	(mbtolower): New.
+	(kwsincr_case): New.
+	(kwsmusts): Call it instead of kwsincr.
+	(check_multibyte_string): Remove.
+	(check_multibyte_string_no_icase): Rename to check_multibyte_string.
+	(GEAcompile, EGexecute, Fcompile): Use mbtolower instead of the old
+	check_multibyte_string.
+	* tests/Makefile.am (TESTS): Add case-fold-backslash-w.
+	* tests/foad1.sh: Enable fixed tests.
+	* tests/case-fold-backslash-w: New.
+
+2010-03-16  Paolo Bonzini  <bonzini@gnu.org>
+
+	grep: match multibyte charsets line-by-line when using -i
+	The turtle combination -i + MB_CUR_MAX>1 requires case conversion ahead
+	of time.  Avoid doing this repeatedly when many matches succeed.  Together
+	with the previous changes, this fixes https://savannah.gnu.org/bugs/?29117
+	and https://savannah.gnu.org/bugs/?14472.
+
+	* NEWS: Document new speedup.
+	* src/grep.c (do_execute): New.
+	(grepbuf): Use it.
+
+2010-03-15  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: fix handling of ranges in multibyte character sets
+	* src/dfa.c (parse_bracket_exp_mb): Add separate ranges for
+	lowercase and uppercase endpoints if folding case.
+	* tests/Makefile.am (TESTS): Add case-fold-char-range.
+	* tests/case-fold-char-range: New.
+
+	tests: add more UTF-8 test cases
+	* tests/Makefile.am (TESTS): Add spencer1-locale.
+	(EXTRA_DIST): Add spencer1-locale.awk.
+	* tests/spencer1-locale.awk: New.
+	* tests/spencer1-locale: New.
+
+2010-03-15  Jim Meyering  <meyering@redhat.com>
+
+	tests: complete the renaming fedora.sh -> fedora
+	* tests/Makefile.am (TESTS): Rename fedora.sh -> fedora here, too.
+
+2010-03-15  Jim Meyering  <meyering@redhat.com>
+
+	* tests/fedora.sh: Rename to...
+	* tests/fedora: ...this, to reflect new convention:
+	Use the lack of a suffix to indicate we've converted to the new
+	init.sh-using test framework.
+
+	tests: adjust fedora.sh to handle traps more portably
+
+2010-03-15  Jim Meyering  <meyering@redhat.com>
+
+	tests: adjust fedora.sh to handle traps more portably
+	* tests/fedora.sh: Use "Exit", not "exit".
+
+	tests: for each test, set an envvar to its name
+	* tests/Makefile.am (TESTS_ENVIRONMENT): Set GREP_TEST_NAME for
+	each test.  This is used to help make the output of hundreds of
+	independent, often-parallel valgrind runs more manageable.
+
+2010-03-14  Jim Meyering  <meyering@redhat.com>
+
+	tests: clean up fedora.sh
+	* tests/fedora.sh: Use "grep", not ${GREP}.
+	Use init.sh.
+	Use timeout 10, not sleep 1 (three times).
+	The latter would always sleep for 3 seconds, and the test would
+	fail with a false positive on a slow system or with a heavily
+	instrumented (valgrind) executable.
+
+2010-03-12  Jim Meyering  <meyering@redhat.com>
+
+	build: avoid build failure with --enable-gcc-warnings
+	* src/dfa.c: Don't include <assert.h>, now that it is not used.
+	[DEBUG]: Remove #ifdef block.
+
+2010-03-12  Paolo Bonzini  <bonzini@gnu.org>
+
+	syntax-check: enable space-tab
+	* cfg.mk (local-checks-to-skip): Enable space-tab.
+	* .x-sc_space_tab: Add exceptions.
+	* tests/status.sh: Fix occurrence.
+
+	syntax-check: enable m4-quote-check
+	* cfg.mk (local-checks-to-skip): Enable m4-quote-check.
+	* configure.ac: Fix occurrence.
+
+	syntax-check: enable makefile-TAB-only-indentation
+	* cfg.mk (local-checks-to-skip): Enable makefile-TAB-only-indentation.
+	* Makefile.am: Fix only occurrence.
+
+	grep: fix error-message-uppercase
+	* cfg.mk (local-checks-to-skip): Enable error-message-uppercase.
+	* src/dfa.c (parse_bracket_exp_mb, lex, dfaparse): Fix occurrences.
+	* src/search.c (Pcompile, Pexecute): Fix occurrences.
+
+	dfa, grep: cleanup if-before-free and cast-of-argument-to-free
+	* .x-sc_avoid_if_before_free: Remove.
+	* .x-sc_cast_of_alloca_return_value: Remove.
+	* .x-sc_cast_of_x_alloc_return_value: Remove.
+	* .x-sc_cast_of_argument_to_free: Temporarily add src/search.c.
+	* cfg.mk (local-checks-to-skip): Remove sc_cast_of_argument_to_free.
+	* src/dfa.c (ifree): Remove.
+	(dfamust, build_state, transit_state, dfafree): Do not do if-before-free,
+	do not cast free argument to ptr_t or char *.
+	(freelist): Call free instead of ifree.
+	* src/dfa.h (ptr_t): Remove.
+
+2010-03-12  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: remove CRANGE dead code
+	The only use of CRANGE was removed by commit 193830d.  In theory it is
+	more correct to do what CRANGE did, but in practice it seems like it did
+	not work.
+
+	* src/dfa.h (token): Remove CRANGE.
+	* src/dfa.c (atom): Do not handle CRANGE.
+	(prtok): Likewise.
+
+2010-03-12  Paolo Bonzini  <bonzini@gnu.org>
+
+	dfa: get rid of x*alloc
+	* src/dfa.c: Include xalloc.h.
+	(xmalloc, xrealloc, xcalloc): Remove.
+
+	grep: cleanup one const cast
+	* src/search.c (GEAcompile): Do not reuse motif when operating on the
+	(const) pattern, so we can make it non-const.  Remove cast from free.
+
+	kwset/system: remove ptr_t
+	* src/kwset.h: Declare kwset using an incomplete struct type.
+	* src/system.h (ptr_t): Remove.
+
+2010-03-12  Jim Meyering  <meyering@redhat.com>
+
+	tests: add test cases for dfaexec bug
+	* tests/dfaexec-multibyte: New test.
+	* tests/Makefile.am (TESTS): Add it.
+	Reported by Paolo Bonzini in http://bugzilla.redhat.com/544407
+	and http://bugzilla.redhat.com/544406 .
+
+2010-03-12  Jim Meyering  <meyering@redhat.com>
+
+	dfa: manually merge gawk's dfaexec
+	* src/dfa.c (dfaexec): Adjust API: return pointer, not offset, and
+	take an "end" pointer parameter, rather than integral "size".
+	Adjust comment accordingly.
+	(build_state): Maintain d->newlines.
+	(copytoks): Update multibyte_prop indices.
+	(SKIP_REMAINS_MB_IF_INITIAL_STATE): Update a cast.
+	Return NULL, rather than (size_t) -1.
+	(realloc_trans_if_necessary): Realloc d->newlines.
+	* src/dfa.h (struct dfa): New member, "newlines".
+	(struct dfa) [GAWK]: New member, "broken".
+	(dfaexec): Update prototype and copy the new comment from dfa.c.
+
+	dfa: make search.c use the new dfaexec API
+
+	* src/search.c: Adjust to new dfaexec API.
+	Now, dfaexec returns a pointer, not an integer,
+	and the third parameter is END, not buffer size.
+	* src/dfa.c (dfaexec): Rewrite the function's comment.
+	Don't just clobber *END.  While doing that happens to be
+	fine for gawk's usage, in grep, *END usually points to the
+	first byte of the next buffer.  Save the initial value,
+	and restore it just before returning.
+	* src/dfa.h (dfaexec): Update comment; include parameter names.
+
+2010-03-12  Jim Meyering  <meyering@redhat.com>
+
+	dfa: appease static analyzers
+	* src/dfa.c (transit_state_singlebyte): Call abort rather
+	than returning in a "can't happen" scenario.
+	This stops clang from emitting a false-positive report (I think it
+	was used-uninitialized) about a caller.
+
+2010-03-11  Jim Meyering  <meyering@redhat.com>
+
+	dfa: do not accept [[:UPPER:]] or [[:LOWER:]] internally
+	* src/dfa.c (parse_bracket_exp_mb): Those class names are not
+	valid, and rejected elsewhere, so there is no point in allowing
+	upper or mixed-case versions here.
+
+2010-03-11  Jim Meyering  <meyering@redhat.com>
+
+	maint: remove a trailing space
+	* src/search.c (EXECUTE_FCT): Remove trailing space.
+
+	maint: remove all uses of PARAMS
+	Remove most with this:
+	git grep -lw PARAMS |xargs perl -pi -e 's/\bPARAMS *\((.*)\);/$1;/'
+	Remove the remainder manually.
+
+2010-03-11  Jim Meyering  <meyering@redhat.com>
+
+	maint: remove all uses of PARAMS
+	* lib/savedir.h (PARAMS): Remove definitions manually.
+	Remove the remaining ones via this command:
+	  git grep -l define.PARAMS |xargs perl -ni -e '/define PARAMS/ or print'
+	* src/dfa.h (PARAMS): Remove definitions.
+	* src/system.h (PARAMS): Likewise.
+	Remove most uses with this:
+	  git grep -lw PARAMS |xargs perl -pi -e 's/\bPARAMS *\((.*)\);/$1;/'
+	Remove the remainder manually.
+
+	maint: remove now-useless prototypes
+	* src/dfa.c: Remove the prototype of each static, non-recursive
+	function whose definition precedes first use.
+
+	grep: plug an inconsequential leak
+	* src/grep.c (main): Plug a leak: free "keys".
+
+	grep: avoid useless allocations for empty GREP_OPTIONS
+	* src/grep.c (prepend_default_options): Ignore GREP_OPTIONS
+	when it's empty, not just when it's undefined.
+	There are still relatively harmless leaks when GREP_OPTIONS
+	is set and non-empty.  We'll address those, eventually.
+
+2010-03-09  Jim Meyering  <meyering@redhat.com>
+
+	build: record build-from-clone tool requirements
+	* bootstrap.conf (buildreq): This makes bootstrap fail with
+	a clear explanation of the problem.  Otherwise, you'd get into
+	the build process and fail with something far more cryptic.
+
+	dfa: remove a trailing blank
+	* src/dfa.c (dfaexec): No trailing blanks allowed.
+
+	dfa: sync a tiny change from gawk
+	* src/dfa.c (state_index) [MBS_SUPPORT]: Initialize .mpbs.nelem member
+	unconditionally.  Also initialize .mbps.elems.
+
+	dfa: avoid a leak (work_mbc->chars)
+	* src/dfa.c (parse_bracket_exp_mb): Remove useless (and leaked MALLOC).
+
+	doc+bootstrap: document build-from-git-clone process
+	* bootstrap: Update from coreutils/gnulib.
+	* README-hacking: New file, nearly identical to the one in coreutils.
+
+2010-03-08  Paolo Bonzini  <bonzini@gnu.org>
+
+	more work on TODO
+	* TODO: More work on the first section.  Use clearer section headers.
+
+2010-03-08  Reuben Thomas  <rrt@sc3d.org>
+
+	bring TODO up-to-date
+	* TODO: merge with TODO section of http://www.gnu.org/software/grep/devel.html
+	and remove done items. Some small bits of tidying also.
+
+2010-03-07  Paolo Bonzini  <bonzini@gnu.org>
+
+	simplify parsing of [a-z]
+	* src/dfa.c (in_coll_range): New.
+	(lex): Use it instead of regcomp/regexec.
+
+	Small refactoring in src/dfa.c
+	* src/dfa.c (parse_bracket_exp_mb): Return MBCSET.
+	(lex): Assign return value of parse_bracket_exp_mb to lasttok, return it.
+
+	use do...while(0) idiom
+	* dfa.c (FETCH): Wrap with do...while(0).
+
+2010-03-06  Paolo Bonzini  <bonzini@gnu.org>
+
+	extract common code from if/else
+	* dfa.c (dfaexec): Simplify logic for MB_CUR_MAX > 1 case.
+
+	remove register variable hacks
+	* dfa.c (dfaexec): We can extract the address of a variable without fearing
+	performance problems, modern compilers know better.
+
+	remove register keywords
+	* dfa.c (dfaexec): Modern compilers just ignore it.
+
+	allow grep -Pz
+	* NEWS: Document grep -P improvements.
+	* src/search.c (Pcompile): Remove restriction on grep -Pz.
+	* tests/pcre-z: New.
+	* tests/Makefile.am (TESTS): Add pcre-z.
+
+	fix cross-line matching in PCRE backend
+	* search.c (Pexecute): Split the buffer in lines and match each line
+	separately.
+	* tests/fedora.sh: Add regression testsuite.
+
+	fix formatting of NEWS
+	* NEWS: fix formatting of 2.6 entries.
+
+	fix a bug in handling of -i and character type
+	* dfa.c (parse_bracket_exp_mb): Convert [[:lower:]] and [[:upper]] to
+	[[:alpha:]] when folding case.
+	* tests/case-fold-char-type: New file.  Test for the bug.
+	* tests/Makefile.am (TESTS): Add it.
+	* NEWS (Bug fixes): Mention it.
+
+	fix previous test case change
+	* tests/case-fold-char-class: Do not reset fail to 0 after first test.
+
+2010-03-06  Mike Frysinger  <vapier@gentoo.org>
+
+	grep(1) man page: touchup --label option
+	* doc/grep.1 (--label): Don't italicize ending period.  Point to -H
+	option.
+
+2010-03-06  Paolo Bonzini  <bonzini@gnu.org>
+
+	augment case-fold-char-class test case
+	* tests/case-fold-char-class: Test matching lowercase against uppercase
+	as well as vice versa.
+
+2010-03-05  Reuben Thomas  <rrt@sc3d.org>
+
+	doc: improve the discussion of PCRE
+	* doc/grep.1: Add a sentence about Perl regular expressions,
+	and point to pcresyntax(3) and pcrepattern(3).
+	* doc/grep.texi: Likewise.
+
+2010-03-05  Jim Meyering  <meyering@redhat.com>
+
+	maint: dfa-sync: comment and dead-to-grep code: no semantic change
+	* src/dfa.c: Sync a comment and some #ifdef GAWK code.
+
+	maint: dfa-sync: don't malloc zero
+	* src/dfa.c (dfacomp): Skip case_fold logic when length is zero.
+	This probably "no semantic change", but does improve efficiency in
+	a degenerate case.
+
+	maint: dfa-sync: use CALLOC rather than equiv. MALLOC+initialize-loop
+	* src/dfa.c (dfaanalyze): Sync from gawk.  No semantic change.
+
+	dfa.c: add support for \s and \S
+	* src/dfa.c (lex): Sync from gawk's dfa.c.
+
+	maint: dfa-sync: add omitted array initializer
+	* src/dfa.c (prednames): Add a "0" to final initializer.
+	No semantic change.
+
+	fix a bug in handling of -i and character classes
+	* dfa.c (parse_bracket_exp_mb): Sync one part of this function
+	from gawk's dfa.c, which was patched by Arnold D. Robbins.
+	* tests/case-fold-char-class: New file.  Test for the bug.
+	* tests/Makefile.am (TESTS): Add it.
+	(TESTS_ENVIRONMENT): Propagate LOCALE_FR and LOCALE_FR_UTF8
+	definitions into tests.
+	* NEWS (Bug fixes): Mention it.
+
+2010-03-05  Paolo Bonzini  <pbonzini@redhat.com>
+
+	Fedora Grep regression test suite
+	* tests/Makefile.am (TESTS): Add fedora.sh.
+	(CLEANFILES): Add several new files.
+	* tests/fedora.sh: New file, originally by Lubomir Rintel but somewhat
+	rewritten to avoid bashisms.
+
+2010-03-05  Paolo Bonzini  <bonzini@gnu.org>
+
+	convert AUTHORS file to UTF-8
+	* AUTHORS: Convert to UTF-8.
+
+	eliminate invalid "ptr += (ptr2 - ptr1)"
+	* lib/savedir.c (savedir): new_name_space and name_space do not point into
+	the same object, so computing their difference is invalid.  Similarly,
+	summing the difference to namep is invalid because namep and the result
+	point into different objects.  Avoid this.
+
+	fix for bug 21276
+	* lib/savedir.c (isdir1): Use realloc instead of calloc.  Remove
+	dead code.
+	(savedir): Do not leak name_space if allocation of new_name_space fails.
+
+2010-03-04  Jim Meyering  <meyering@redhat.com>
+
+	tests: add a test based on an example from Paolo Bonzini
+	* tests/word-multi-file: New test.
+	* tests/Makefile.am (TESTS): Add it.
+
+	doc: document release procedure
+	* README-release: New file.
+
+	build: update gnulib submodule to latest
+
+2010-02-22  Paolo Bonzini  <bonzini@gnu.org>
+
+	add --group-separator=FOO and --no-group-separator
+	* src/grep.c (group_separator): New.
+	(long_options): Add --group-separator=FOO and --no-group-separator.
+	(prtext): Print group_separator instead of SEP_STR_GROUP.  Optionally
+	suppress the separator altogether.
+	(main) Handle GROUP_SEPARATOR_OPTION.
+	* doc/grep.texi (Context control): Document it.
+	* NEWS: Mention it.
+	* tests/yesno.sh: Add testcases.
+
+2010-02-21  Jim Meyering  <meyering@redhat.com>
+
+	tests: don't use "echo -n"
+	* tests/foad1.sh: Use printf, not echo -n.  The latter is not portable.
+	Reported by Daniel Richman.
+
+2010-02-08  Jim Meyering  <meyering@redhat.com>
+
+	remove useless DJGPP-specific code
+	* src/grep.c (grepfile): Remove now-useless DJGPP-specific code.
+	Now, all S_IS* macros are guaranteed to be defined via gnulib.
+
+2010-02-07  Jim Meyering  <meyering@redhat.com>
+
+	tests: add help-version sanity tests from coreutils
+	* tests/help-version: New test, from coreutils.
+	* tests/Makefile.am (TESTS): Add it.
+	(TESTS_ENVIRONMENT) [built_programs]: Define it.
+
+	tests: correct TESTS_ENVIRONMENT's PATH setting
+	* tests/Makefile.am (TESTS_ENVIRONMENT): Set PATH to start with
+	$(abs_top_builddir)/src, so that we test the programs we've just built.
+
+	grep: use the correct exit status (2) upon write failure, not 1
+	* src/grep.c (main): Initialize exit_failure to EXIT_TROUBLE.
+	* NEWS (Bug fixes): Mention this fix.
+
+	maint: enable the prohibit_magic_number_exit syntax check
+	* cfg.mk (local-checks-to-skip): Remove sc_prohibit_magic_number_exit,
+	to enable that check.
+	* src/system.h (EXIT_TROUBLE): Define.
+	* src/grep.c: Use symbolic names, EXIT_SUCCESS, EXIT_FAILURE, and
+	EXIT_TROUBLE, not 0, 1, 2.
+	* src/search.c: Likewise.
+	* src/vms_fab.c (string): Likewise.
+
+2010-02-04  Jim Meyering  <meyering@redhat.com>
+
+	doc: adjust NEWS item
+	* NEWS: Correct a description.
+
+2010-02-03  Jim Meyering  <meyering@redhat.com>
+
+	tests: exercise surprising -m1 vs. --context behavior
+	* tests/max-count-vs-context: New test.  Exercise the surprising,
+	but documented, behavior reported by Markus Jochim in
+	http://savannah.gnu.org/bugs/?28588.
+	* tests/Makefile.am (TESTS): Add it.
+
+	tests: use init.sh from gnulib
+	* tests/init.sh: New file, from gnulib.
+	* tests/Makefile.am (EXTRA_DIST): Add it.
+	(TESTS_ENVIRONMENT): Add variables and features.
+	(VERBOSE): Define.
+
+	maint: remove unused Makefile rule
+	* tests/Makefile.am (dist-hook): Remove rule.  No longer needed.
+
+	maint: adjust formatting in tests/Makefile.am
+	* tests/Makefile.am (TESTS, CLEANFILES): Align and sort.
+
+	build: avoid warnings in gnulib-supplied regex files
+	Now that we enable more warnings in lib/, we choose
+	to avoid some via patches applied by bootstrap, using
+	files in the gl/ hierarchy.  Other, less-important
+	warnings are avoided simply by turning off the
+	-Wold-style-definition option and using a slightly
+	relaxed set of warnings $(GNULIB_WARN_CFLAGS) in lib/.
+	* gl/lib/regcomp.c.diff: Avoid warnings.
+	* gl/lib/regex_internal.c.diff: Likewise.
+	* gl/lib/regex_internal.h.diff: Likewise.
+	* gl/lib/regexec.c.diff: Likewise.
+	* configure.ac (GNULIB_PORTCHECK): Disable only -Wold-style-definition.
+	* lib/Makefile.am (AM_CFLAGS): Use $(GNULIB_WARN_CFLAGS) rather
+	than the slightly more strict $(WARN_CFLAGS).
+
+	tests: adjust spencer #37 to pass with gnulib's regex code
+	* tests/spencer1.tests: Change #37 to expect an exit status of 2, not 1.
+	grep 'a[b-a]' reports "Invalid range end".
+
+	maint: use regex from gnulib, rather than our bit-rotting one
+	* bootstrap.conf (gnulib_modules): Add regex.
+	* configure.ac: Don't use jm_INCLUDED_REGEX.
+	Update use of cache variable.
+	* lib/regex.c: Remove file.
+	* lib/regex.h: Likewise.
+	* m4/regex.m4: Likewise.
+	* POTFILES.in: Update to match.
+
+	build: update gnulib submodule to latest
+
+2010-01-28  Jim Meyering  <meyering@redhat.com>
+
+	maint: update to latest gnulib; adjust cfg.mk
+	* gnulib: Update submodule to latest.
+	* cfg.mk (old_NEWS_hash): Update to reflect NEWS Copyright line change.
+
+2010-01-06  Jim Meyering  <meyering@redhat.com>
+
+	maint: avoid old jm_* macros
+	There were jm_* macros here, until very recently.
+	* cfg.mk (sc_prohibit_jm_in_m4): New rule, from coreutils.
+
+	maint: remove decl.m4
+	* m4/decl.m4: Remove unused file.
+
+	maint: rely on gnulib's new isdir.h
+	* src/grep.c: Include "isdir.h".
+	* src/system.h: Remove declaration of isdir.
+
+	build: rename local to avoid shadowing global, dfa
+	* src/dfa.c (dfamust): Rename parameter: s/dfa/d/.
+
+	build: avoid warning from -Wmissing-prototypes
+	* src/dfa.c (match_mb_charset): Declare to be static.
+
+	build: avoid shadowing warning for "link"
+	* src/kwset.c (link): Define to kwset_link, to avoid shadowing
+	the function.
+
+	build: avoid shadowing warning for unused "rs"
+	* src/dfa.c (transit_state): Remove dead stores;
+	move a declaration "down".
+	Ignore transit_state_consume_1char return value.
+
+	build: avoid shadowing warnings
+	* src/dfa.c (match_mb_charset): Rename parameter: s/index/idx/.
+	(check_matching_with_multibyte_ops, match_anychar): Likewise.
+
+	build: avoid warning about unused definition of N_
+	* src/dfa.c (N_): Remove unused definition.
+
+	build: avoid format-string warnings
+	* src/search.c (dfaerror): Use literal "%s" as format string.
+	(kwsmusts, GEAcompile): Likewise.
+	(Pcompile): Likewise.
+
+	build: add configure-time --enable-gcc-warnings option; avoid warnings
+	* bootstrap.conf (gnulib_modules): Add "manywarnings" module.
+	* configure.ac: Add --enable-gcc-warnings, derived from code in bison.
+	* src/Makefile.am (AM_CFLAGS): Set to $(WARN_CFLAGS) $(WERROR_CFLAGS)
+	* lib/Makefile.am (AM_CFLAGS): Likewise, but append.
+
+	build: remove now-useless -I../intl option
+	* src/Makefile.am (INCLUDES): Remove -I../intl, now that intl is gone.
+
+	maint: avoid more warnings
+	* src/grep.c (MAX): Remove definition of unused macro.
+	(usage): Declare with __attribute__ ((noreturn)).
+	Split long strings into chunks of length < 509.
+
+	fix a possible bug: remove errant semicolon
+	* src/grep.c (prline): Remove erroneous semicolon-after-if-expr.
+
+	maint: avoid compilation warnings
+	* bootstrap.conf (gnulib_modules): Add ignore-value.
+	* src/search.c (check_multibyte_string_no_icase): A variant of
+	check_multibyte_string that does *not* convert case, and hence
+	does not modify its BUF parameter.
+	(check_multibyte_string): Use xcalloc in place of xmalloc+memset.
+	Use ignore_value to ignore the return value from wcrtomb.  This is
+	ok, since we know the input is a valid upper case wide character.
+	(Fexecute, EGexecute): Update callers of check_multibyte_string
+	to use both it and check_multibyte_string_no_icase.
+
+	maint: avoid warnings about unused fwrite return value
+	* bootstrap.conf (gnulib_modules): Add unlocked-io.
+	* src/system.h: Include "unlocked-io.h".
+
+	maint: remove {m4,lib}/.gitignore; they were undergoing too much churn
+	* .gitignore: Ignore all of m4/* except m4/djgpp.m4
+	and all of lib/* except Makefile.am, savedir.c and savedir.h.
+	* m4/.gitignore: Remove file.
+	* lib/.gitignore: Remove file.
+
+2010-01-05  Jim Meyering  <meyering@redhat.com>
+
+	build: run gnulib's tests, too
+	* Makefile.am (SUBDIRS): Add gnulib-tests.
+	* gnulib-tests/Makefile.am: New file.
+	* bootstrap.conf (bootstrap_epilogue): New function, from coreutils.
+	(gnulib_tool_option_extras): Define.
+	* configure.ac: Add gnulib-tests/Makefile.
+
+2010-01-03  Jim Meyering  <meyering@redhat.com>
+
+	maint: record update-copyright options for this package
+	* cfg.mk: Next time, just run "make update-copyright".
+
+2010-01-01  Jim Meyering  <meyering@redhat.com>
+
+	maint: update all FSF copyright year lists to include 2010
+	Use this command:
+	git ls-files |grep -vE '^(\..*|COPYING|gnulib)$' |xargs \
+	env UPDATE_COPYRIGHT_USE_INTERVALS=1 build-aux/update-copyright
+
+2009-12-23  Jim Meyering  <meyering@redhat.com>
+
+	fix multi-byte-locale read-beyond-end-of-buffer error
+	Avoid read-beyond-end-of-buffer errors, evoked by running this:
+	LC_ALL=en_US.UTF-8 valgrind src/grep -f <(printf 'a\nb\n') <(echo c)
+
+	Conditional jump or move depends on uninitialised value(s)
+	   at 0x78136D: __gconv_transform_utf8_internal (in /lib/libc-2.11.so)
+	   by 0x7E7232: mbrtowc (in /lib/libc-2.11.so)
+	   by 0x8055773: dfaexec (dfa.c:2816)
+	   by 0x804D7B0: EGexecute (search.c:353)
+	   by 0x804ACD8: grepbuf (grep.c:1036)
+	   by 0x804B023: grep (grep.c:1156)
+	   by 0x804B460: grepfile (grep.c:1287)
+	   by 0x804CF0D: main (grep.c:2282)
+
+	Conditional jump or move depends on uninitialised value(s)
+	   at 0x7E7248: mbrtowc (in /lib/libc-2.11.so)
+	   by 0x8055773: dfaexec (dfa.c:2816)
+	   by 0x804D7B0: EGexecute (search.c:353)
+	   by 0x804ACD8: grepbuf (grep.c:1036)
+	   by 0x804B023: grep (grep.c:1156)
+	   by 0x804B460: grepfile (grep.c:1287)
+	   by 0x804CF0D: main (grep.c:2282)
+
+	* src/dfa.c (dfaexec) [MBS_SUPPORT]: Do not access one byte beyond
+	end of buffer.
+
+2009-12-23  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+
+2009-12-23  Paolo Bonzini  <bonzini@gnu.org>
+
+	Speed up insert.
+	Suggested by Johan Walles <johan.walles@gmail.com> (bug 23354).
+
+	* src/dfa.c (insert): Use binary search.
+
+2009-12-23  Johan Walles  <johan.walles@gmail.com>
+
+	Decrease epsclosure memory usage
+	Fixes bug 23321.
+
+	* src/dfa.c (epsclosure): Make visited an array of char.
+
+2009-12-22  Paolo Bonzini  <bonzini@gnu.org>
+
+	Make 'grep -1 -2' and 'grep -1v2' equivalent to grep -2
+	Fixes bug 12128.
+
+	* src/grep.c (get_nondigit_option): Reset the buffer every time
+	a non-digit option is found or a new argument is started.
+
+2009-12-22  Paolo Bonzini  <bonzini@gnu.org>
+
+	Improve description of --label
+	Fixes bug 22681.
+
+	* doc/grep.1 (--label): Use -H in the example, improve wording.
+	* doc/grep.texi (Output Line Prefix Control): Likewise.
+
+2009-12-22  Paolo Bonzini  <bonzini@gnu.org>
+
+	Avoid using an invalid memchr result.
+	Related to bug 13161.  I cannot find a testcase, but it is better to be
+	defensive considering that these bug were found in the past.
+
+	* src/search.c (EGexecute, Fexecute): Check for memchr return values.
+
+2009-12-11  Jim Meyering  <meyering@redhat.com>
+
+	build: update gnulib submodule to latest
+
+2009-12-04  Jim Meyering  <meyering@redhat.com>
+
+	maint: enable prohibit_have_config_h check
+	* cfg.mk (local-checks-to-skip): Enable sc_prohibit_have_config_h
+	* lib/regex.c: Remove useless cpp test of HAVE_CONFIG_H.
+	* lib/savedir.c: Likewise.
+	* src/grep.c: Likewise.
+	* src/kwset.c: Likewise.
+	* src/search.c: Likewise.
+
+	maint: enable cast_of_x_alloc_return_value check
+	* cfg.mk (local-checks-to-skip): Enable sc_cast_of_x_alloc_return_value.
+	* .x-sc_cast_of_x_alloc_return_value:
+	* src/dfa.c (CALLOC, MALLOC, REALLOC): Remove casts.
+	* src/dosbuf.c (undossify_input): Likewise.
+	* src/grep.c (print_line_middle, prepend_default_options): Likewise.
+
+	maint: enable cast_of_alloca_return_value check
+	* cfg.mk (local-checks-to-skip): Enable sc_cast_of_alloca_return_value.
+	* .x-sc_cast_of_alloca_return_value: New file.
+
+2009-12-04  Paolo Bonzini  <bonzini@gnu.org>
+
+	fix "grep -Ff" on CRLF-terminated files
+	* src/search.c (Fcompile) [HAVE_DOS_FILE_CONTENTS]: Recognize \r\n as
+	a line terminator.
+
+	fix compilation with included regex
+	* Makefile.am (libgreputils_a_DEPENDENCIES): New.
+
+	switch to pkg-config for PCRE detection
+	* configure.ac: use pkg-config to detect PCRE
+	* src/Makefile.am (grep_LDADD): link grep with PCRE_LIBS
+
+2009-12-04  Jim Meyering  <meyering@redhat.com>
+
+	maint: remove "missing" script
+	* missing: Remove now-unused file.
+
+	maint: make .gitignore ignore more
+	* .gitignore: Ignore more.
+
+	maint: enable useless-if-before-free check
+	* cfg.mk (local-checks-to-skip): Enable sc_avoid_if_before_free.
+	* .x-sc_avoid_if_before_free: New file.  Exempt regex.c and dfa.c,
+	in case anyone ever tries to merge their contents with other versions.
+	* src/grep.c (print_line_middle, grepdir): Remove useless if-before-free.
+	* src/search.c (IF_BK, EXECUTE_FCT): Likewise.
+
+	maint: enable po-check
+	* cfg.mk (local-checks-to-skip): Enable sc_po_check.
+	* po/POTFILES.in: Sort and update.
+
+2009-12-03  Paolo Bonzini  <bonzini@gnu.org>
+
+	update gnulib, fixing missing inclusion of stdbool.h
+	* gnulib: Update.
+
+2009-11-30  Jim Meyering  <meyering@redhat.com>
+
+	maint: enable two checks
+	* cfg.mk (local-checks-to-skip): Enable two:
+	sc_prohibit_xalloc_without_use sc_two_space_separator_in_usage
+	* src/grep.c (usage): Conform: use two spaces, not 1.
+	* src/kwset.c (malloc): Define as a function-macro so that the
+	syntax-check rule sees that we are indeed using xmalloc here.
+
+	maint: enable makefile_path_separator check
+	* cfg.mk (local-checks-to-skip): Enable sc_makefile_path_separator_check,
+	now that the sole offender, an old po/Makefile.in.in, is gone.
+
+	maint: remove now-generated file: po/Makefile.in.in
+	* po/Makefile.in.in: Remove file, now generated via bootstrap.
+
+	maint: enable makefile @...@ check
+	* cfg.mk (local-checks-to-skip): Enable sc_makefile_check.
+	* lib/Makefile.am (libgreputils_a_LIBADD): Use $(...), rather than
+	anachronistic @...@ notation.
+	* src/Makefile.am (LDADD): Likewise.
+	* tests/Makefile.am (AWK): Remove definition.
+
+	maint: enable trailing_blank check
+	* cfg.mk (local-checks-to-skip): Enable sc_trailing_blank.
+	* AUTHORS: Remove trailing blanks.
+	* COPYING: Likewise.
+	* README: Likewise.
+	* README-alpha: Likewise.
+	* README-boot: Likewise.
+	* THANKS: Likewise.
+	* TODO: Likewise.
+	* src/dfa.c: Likewise.
+	* src/mbsupport.h: Likewise.
+	* tests/backref.sh: Likewise.
+	* tests/file.sh: Likewise.
+	* tests/options.sh: Likewise.
+	* tests/tests: Likewise.
+	* vms/README: Likewise.
+	* vms/make.com: Likewise.
+
+	maint: enable unmarked_diagnostics check
+	* cfg.mk (local-checks-to-skip): Enable sc_unmarked_diagnostics
+	* src/grep.c (fillbuf): Mark a diagnostic for translation.
+	(reset): Likewise.
+
+	maint: enable require_config_h checks
+	* cfg.mk (local-checks-to-skip): Enable sc_require_config_h
+	and sc_require_config_h_first.
+	* src/dosbuf.c: Include <config.h>.
+	* src/vms_fab.c: Likewise.
+	* .x-sc_require_config_h: New file: list the exceptions.
+	* .x-sc_require_config_h_first: Likewise.
+
+	maint: use gnulib's progname module; enable set_program_name check
+	* bootstrap.conf (gnulib_modules): Add progname.
+	* src/grep.c: Include "progname.h".
+	(program_name): Remove declaration.
+	(main): Call set_program_name.
+	* cfg.mk (local-checks-to-skip): Add sc_program_name.
+
+	maint: enable "file system" check
+	* cfg.mk (local-checks-to-skip): Enable sc_file_system.
+	* lib/savedir.c (savedir): Tweak spelling.  Remove trailing blanks.
+
+	maint: enable immutable_NEWS check
+	* NEWS: Move copyright to the bottom.
+	Use the format required by release-related tools.
+	* .prev-version: New file.
+	* cfg.mk (old_NEWS_hash): Define.
+	(local-checks-to-skip): Enable check: sc_immutable_NEWS.
+
+	maint: disable the many failing syntax-checks
+	* cfg.mk: New file.
+	(local-checks-to-skip): Define to the list of disabled rules.
+	Subsequent change-sets will enable them, one by one.
+
+	build: require automake-1.11, enable silent-rules, parallel tests, xz
+	* configure.ac (AM_INIT_AUTOMAKE): Create xz-compressed tarballs,
+	not bzip2-compressed ones.  Enable automake's silent-rules,
+	parallel tests, and test PASS/FAIL coloring options.
+	Use AC_CONFIG_HEADERS, not AM_CONFIG_HEADER.  Quote the argument.
+
+	build: use git-version-gen for inter-release version strings
+	* configure.ac (AC_INIT): Use git-version-gen.
+
+	build: add several build- and release-related gnulib modules
+	* bootstrap.conf (gnulib_modules): Add announce-gen update-copyright
+	do-release-commit-and-tag git-version-gen gnu-web-doc-update
+	gnupload maintainer-makefile useless-if-before-free
+
+	build: adapt to the newer closeout module from gnulib
+	* src/grep.c: Include "exitfail.h".
+	(main) [-q]: Set the global variable, exit_failure, rather than
+	calling the now-removed close_stdout_set_file_name function.
+
+	build: adapt to the newer exclude API we now get from gnulib
+	* src/grep.c (main): Adapt to newer exclude.c: add EXCLUDE_WILDCARDS as
+	the new "option" argument in calls to add_exclude and add_exclude_file.
+
+	build: get more lib/* files from gnulib, adjust savedir
+	* bootstrap.conf (gnulib_modules): Add the following:
+	closeout exclude hard-locale isdir strtoumax.
+	* lib/.gitignore, m4/.gitignore: Update.
+	* lib/closeout.c, lib/closeout.h: Remove.
+	* lib/exclude.c, lib/exclude.h: Remove.
+	* lib/hard-locale.c, lib/hard-locale.h: Remove.
+	* lib/strtoumax.c: Remove.
+	* lib/isdir.c: Remove.
+	* lib/Makefile.am: Remove here, too.
+	* lib/savedir.c: Adapt to new exclude module:
+	s/excluded_filename/excluded_file_name/ and remove 3rd argument.
+
+	build: update gnulib submodule to latest
+
+	maint: generate ChangeLog from git logs
+	* Makefile.am (dist-hook, gen-ChangeLog): New rules.
+	* bootstrap.conf (gnulib_modules): Add gitlog-to-changelog.
+	Ensure that ChangeLog exists.
+	* ChangeLog-2009: Rename from ChangeLog
+	* ChangeLog: Remove file.
+	* .gitignore: Add ChangeLog.
+
+	maint: list gnulib modules one per line
+	* bootstrap.conf (gnulib_modules): List them one per line.
+
+2009-11-29  Tony Abou-Assaleh  <taa@acm.org>
+
+	Acknowledge new maintainers, update README-alpha
+	* AUTHORS: new maintainers added
+	* THANKS: same
+	* README-alpha: change CVS references to Git
diff --git a/src/grep/ChangeLog-2009 b/src/grep/ChangeLog-2009
new file mode 100644
index 0000000..c7d45cc
--- /dev/null
+++ b/src/grep/ChangeLog-2009
@@ -0,0 +1,3653 @@
+2009-11-26  Paolo Bonzini  <bonzini@gnu.org>
+
+	* bootstrap.conf: Add binary-io, dirname.
+	* configure.ac: Remove check for setmode, AC_DOSFILE.
+	* m4/dosfile.m4: Remove.
+	* src/grep.c: Adjust for dirname.h.
+	* src/system.h: Adjust for new gnulib modules.
+
+2009-11-26  Paolo Bonzini  <bonzini@gnu.org>
+
+	* bootstrap.conf: Add gnulib modules for replacement functions and
+	headers.
+	* configure.ac: Remove macros subsumed by gnulib.
+	* lib/hard-locale.c: Remove guards for headers/functions provided by gnulib.
+	* lib/regex.c: Likewise.
+	* lib/savedir.c: Likewise.
+	* src/dfa.c: Likewise.
+	* src/grep.c: Likewise.
+	* src/mbsupport.h: Likewise.
+	* src/system.h: Likewise.
+
+	* src/dfa.h: Do not look at PROTOTYPES.
+
+	* m4/mbstate_t.m4: Remove.
+	* src/getpagesize.h: Remove.
+
+2009-11-26  Paolo Bonzini  <bonzini@gnu.org>
+
+	* bootstrap.conf: Add gnulib modules and build libgreputils.a.
+	* configure.ac: Remove macros subsumed by gnulib.
+	* lib/Makefile.am: Remove files subsumed by gnulib.
+	* lib/alloca.c: Remove.
+	* lib/atexit.c: Remove.
+	* lib/error.c: Remove.
+	* lib/error.h: Remove.
+	* lib/fnmatch.c: Remove.
+	* lib/fnmatch.h: Remove.
+	* lib/getopt.c: Remove.
+	* lib/getopt.h: Remove.
+	* lib/getopt1.c: Remove.
+	* lib/gettext.h: Remove.
+	* lib/malloc.c: Remove.
+	* lib/memchr.c: Remove.
+	* lib/obstack.c: Remove.
+	* lib/obstack.h: Remove.
+	* lib/quotearg.c: Remove.
+	* lib/quotearg.h: Remove.
+	* lib/realloc.c: Remove.
+	* lib/stpcpy.c: Remove.
+	* lib/strtol.c: Remove.
+	* lib/strtoul.c: Remove.
+	* lib/strtoull.c: Remove.
+	* lib/xalloc.h: Remove.
+	* lib/xmalloc.c: Remove.
+	* lib/xstrtol.c: Remove.
+	* lib/xstrtol.h: Remove.
+	* lib/xstrtoumax.c: Remove.
+	* m4/error.m4: Remove.
+	* m4/inttypes_h.m4: Remove.
+	* m4/malloc.m4: Remove.
+	* m4/realloc.m4: Remove.
+	* m4/uintmax_t.m4: Remove.
+	* m4/ulonglong.m4: Remove.
+	* m4/xstrtoumax.m4: Remove.
+	* src/system.h: Remove strerror, sys_nerr, sys_errlist.
+
+2009-11-26  Paolo Bonzini  <bonzini@gnu.org>
+
+	* bootstrap: Use gnulib's build-aux/bootstrap.
+	* configure.ac: Add gl_INIT and gl_EARLY.
+
+2009-11-26  Paolo Bonzini  <bonzini@gnu.org>
+
+	* configure.ac: Bump AC_PREREQ to 2.59.
+
+2009-11-26  Paolo Bonzini  <bonzini@gnu.org>
+
+	* lib/savedir.c: Do not use NAMLEN.
+
+2009-11-21  Paolo Bonzini  <bonzini@gnu.org>
+
+	* configure.ac: Remove AC_SEP.
+	* m4/envsep.m4: Remove.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* configure.ac: Do not generate lib/posix/Makefile.
+	* lib/Makefile.am: Remove SUBDIRS.
+	* lib/posix/Makefile.am: Remove.
+	* lib/posix/regex.h: Overwrite...
+	* lib/regex.h: ... this.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* doc/Makefile.am: Remove AUTOMAKE_OPTIONS.
+	* lib/posix/Makefile.am: Remove AUTOMAKE_OPTIONS.
+	* vms/Makefile.am: Remove AUTOMAKE_OPTIONS.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* Makefile.cvs: Remove.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* m4/largefile.m4: Remove.
+	* m4/lib-ld.m4: Remove.
+	* m4/lib-prefix.m4: Remove.
+	* m4/missing.m4: Remove.
+	* m4/nls.m4: Remove.
+	* m4/progtest.m4: Remove.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* bootstrap: Add autopoint invocation and fetching of .po files.
+	* configure.ac: Bump to GNU gettext 0.17.
+
+	* ABOUT-NLS: Remove.
+	* m4/gettext.m4: Remove.
+	* m4/iconv.m4: Remove.
+	* m4/lib-link.m4: Remove.
+	* m4/po.m4: Remove.
+	* po/*.po: Remove.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* autogen.sh: Rename to...
+	* bootstrap: ... this.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* bootstrap/*: Remove.
+	* configure.ac: Do not create bootstrap/Makefile.
+	* Makefile.am: Do not recurse into bootstrap, distribute new files.
+	* Makefile.boot: Move from bootstrap/Makefile.try.
+	* README-boot: Move from bootstrap/README.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* lib/Makefile.am: Distribute gettext.h.
+	* lib/closeout.c: Use it.
+	* lib/gettext.h: New.
+	* lib/quotearg.c: Use it.
+	* lib/xmalloc.c: Use it.
+	* src/dfa.c: Use it.
+	* src/system.h: Use it.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* configure.ac.in: Rename...
+	* configure.ac: ... to this.  Remove ALL_LINGUAS definition.
+	* autogen.sh: Generate po/LINGUAS instead of configure.ac.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* configure.ac.in: Remove pointless (?) stamp-h rule.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* configure.ac.in: Remove m4/Makefile creation.
+	* Makefile.am: Remove m4 subdirectory.
+	* m4/Makefile.am: Remove.
+	* m4/codeset.m4: Remove.
+	* m4/glibc.m4: Remove.
+	* m4/glibc21.m4: Remove.
+	* m4/header.m4: Remove.
+	* m4/install.m4: Remove.
+	* m4/isc-posix.m4: Remove.
+	* m4/lcmessage.m4: Remove.
+	* m4/sanity.m4: Remove.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* configure.ac.in (AM_GNU_GETTEXT_VERSION): Bump to 0.17.
+	* Makefile.am (EXTRA_DIST): Add build-aux/config.rpath.
+	* intl/*: Remove.
+	* m4/gettext.m4: Upgrade to gettext-0.17.
+	* m4/iconv.m4: Upgrade to gettext-0.17.
+	* m4/lib-ld.m4: New file, from gettext-0.17.
+	* m4/lib-link.m4: New file, from gettext-0.17.
+	* m4/lib-prefix.m4: New file, from gettext-0.17.
+	* m4/nls.m4: New file, from gettext-0.17.
+	* m4/po.m4: New file, from gettext-0.17.
+	* m4/progtest.m4: Upgrade to gettext-0.17.
+	* m4/Makefile.am (EXTRA_DIST): Add the new files.
+	* po/Makefile.in.in: Upgrade to gettext-0.17.
+	* po/Makevars: New.
+	* po/cat-id-tbl.c: New.
+	* src/Makefile.am: Replace @INTLLIBS@ with @LIBINTL@.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* configure.ac.in: Test for limits.h, locale.h, stddef.h, mempcpy
+	and setlocale, though already done implicitly via AM_GNU_GETTEXT.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* bootstrap/Makefile.try: Adjust.
+	* lib/savedir.c: Avoid using stpcpy, so that bootstrapping does not
+	need it.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* configure.ac: Slightly modernize.
+	* Makefile.am: Modernize, use dependencies.
+	* Makefile.am: Modernize, use dependencies.
+	* lib/Makefile.am: Remove ansi2knr.
+	* src/Makefile.am: Remove ansi2knr.
+
+	* .gitignore: Add INSTALL
+	* build-aux/.gitignore: New.
+
+2009-11-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* autogen.sh: Remove what is useless with git.
+
+2009-02-10  Tony Abou-Assaleh <taa@acm.org>
+
+	* po/*.po: update from the Translation Project
+
+	* configure.ac.in: update version to 2.6-cvs
+
+2009-02-02  Karl Berry  <karl@tug.org>
+
+	* configure.ac.in (pcre): set CPPFLAGS, not CFLAGS.
+
+2009-02-01  Tony Abou-Assaleh <taa@acm.org>
+
+	* po/*.po: update from the Translation Project
+
+	* po/Makefile.in.in: Remove deleted file ChangeLog from DISTFILES
+
+	* configure.ac.in: Replace obsolete macro AC_OUTPUT with modern equivalent
+
+2009-02-01  Karl Berry  <karl@tug.org>
+
+	* missing: re-add (from gnulib), since it's missing.
+
+	* src/grep.c (usage): consistent punctuation.
+
+2009-01-31  Tony Abou-Assaleh <taa@acm.org>
+
+	* m4/*.m4: quote underquoted definitions
+	* m4/codeset.m4: serial AM1 -> serial 1
+	* m4/iconv.m4: serial AM2 -> serial 2
+	* m4/header.m4: m4_regexp -> m4_bregexp, m4_patsubst -> m4_bpatsubst
+
+2009-01-29  Karl Berry  <karl@gnu.org>
+
+	* src/grep.c (usage): mention gnu.org/s/grep and gnu.org/gethelp.
+
+        Update and/or add copyright notices:
+        * ABOUT-NLS
+        * AUTHORS
+        * ChangeLog
+        * Makefile.am
+        * NEWS
+        * README
+        * README-alpha
+        * README.DOS
+        * THANKS
+        * autogen.sh
+        * configure.ac.in
+        * bootstrap/Makefile.am
+        * bootstrap/Makefile.try
+        * bootstrap/README
+        * doc/Makefile.am
+        * doc/grep.texi
+        * lib/Makefile.am
+        * m4/Makefile.am
+        * po/POTFILES.in
+        * src/Makefile.am
+        * src/dfa.h
+        * src/dosbuf.c
+        * src/grep.h
+        * src/kwset.c
+        * src/kwset.h
+        * src/mbsupport.h
+        * src/search.c
+        * src/system.h
+        * src/vms_fab.c
+        * src/vms_fab.h
+        * tests/Makefile.am
+        * tests/backref.sh
+        * tests/bre.awk
+        * tests/bre.sh
+        * tests/empty.sh
+        * tests/ere.awk
+        * tests/ere.sh
+        * tests/file.sh
+        * tests/fmbtest.sh
+        * tests/foad1.sh
+        * tests/khadafy.sh
+        * tests/options.sh
+        * tests/pcre.sh
+        * tests/spencer1.awk
+        * tests/spencer1.sh
+        * tests/spencer2.sh
+        * tests/status.sh
+        * tests/tests
+        * tests/warning.sh
+        * tests/yesno.sh
+                * vms/Makefile.am
+        * vms/config_vms.h
+
+        * po/ChangeLog: remove this file, just a bit of ancient cruft.
+
+2009-01-25  Tony Abou-Assaleh <taa@acm.org>
+
+        * README: updated "KNOWN BUGS" section
+
+2009-01-24  Bruno Haible  <bruno@clisp.org>
+
+        * lib/posix/regex.h (__restrict, __restrict_arr): Remove macros.
+          (_Restrict_, _Restrict_arr_): New macros. From gnulib/lib/regex.h.
+          (regcomp, regexec): Update declarations to use them.
+
+        * lib/savedir.c (isdir): New declaration.
+
+        * src/dfa.c (update_mb_len_index): Change argument type to
+          'char const *'.
+          (match_mb_charset): Cast argument to strncpy.
+          (dfaexec): Add pointer cast.
+
+        * src/grep.c (parse_grep_colors): Add braces for disambiguation.
+
+        * src/kwset.c: Include xalloc.h instead of declaring xmalloc manually.
+
+2009-01-20  Tony Abou-Assaleh <taa@acm.org>
+
+        * tests/foad1.sh: disable tests that fail under cs_CZ.UTF-8.
+        * tests/fmbtest.sh: likewise
+        * README: added "KNOWN BUGS" section
+        * src/grep.c: updated copyright year
+
+2008-12-12  Karl Berry  <karl@gnu.org>
+
+        * doc/grep.texi (Exit Status, grep Programs): move these
+          nodes to under Invoking.
+
+        * doc/grep.texi: remove all remaining node pointers;
+          downcase cindex entries.
+
+2008-12-11  Karl Berry  <karl@gnu.org>
+
+        * doc/grep.texi (Copying): update url's.
+          (GNU General Public License): remove node.
+          (GNU Free Documentation License): @include fdl.texi instead.
+          (@copying): update to v1.3 or later.
+        * doc/fdl.texi: new file, copied from
+          https://www.gnu.org/licenses/fdl.texi.
+        * doc/Makefile.am (grep_TEXINFOS): new variable to get fdl.texi.
+          Also add usual GPL license statement.
+
+        * doc/grep.texi (Index): Merge in Concept Index node,
+          to have only one index.  Arrange @syncodeindex's accordingly.
+
+2008-12-10  Karl Berry  <karl@gnu.org>
+
+        * doc/grep.texi (@copying): use @copying; move @contents to
+          beginning; rearrange other frontmatter in the conventional ways.
+
+2008-06-15  Tony Abou-Assaleh <taa@acm.org>
+
+        * src/ansi2knr.[1c]: Remove generated files (installed by
+          automake). Thanks to Emanuele Giaquinta for this.
+
+2008-02-14  Tony Abou-Assaleh <taa@acm.org>
+
+        * src/grep.c: Factor out copyright year in --version. Thanks to
+          Karl Berry for this.
+        * src/grep.c: Update copyright years
+
+        * po/POTFILES.in: +src/system.h +lib/closeout.c +lib/regex.c
+          +lib/xmalloc.c -lib/getopt1.c
+
+2008-02-09  Tony Abou-Assaleh <taa@acm.org>
+
+        * src/dfa.c: Replace a MALLOC and for loop with a CALLOC.  Thanks to
+          Johan Walles for this. Patch #6288
+
+        * README-alpha: more info about CVS code
+        * README: pointer to README-alpha
+
+        * src/grep.c: Update grep copyright year
+
+2008-02-08  Reuben Thomas <rrt@sc3d.org> (tiny change)
+
+        * .cvsignore: add configure.ac
+        * src/.cvsignore: add .deps
+
+2008-02-06  Tony Abou-Assaleh <taa@acm.org>
+
+        * tests/foad1.sh: Comment out cases that are known to fail. These
+      should be uncommented after the 2.5.4 release.
+        * tests/yesno.sh: Likewise.
+        * doc/grep.1: Update description of -e PATTERN; from Benno Schulenberg
+        * doc/grep.texi: Likewise.
+
+2007-11-19  Tony Abou-Assaleh <taa@acm.org>
+
+        * m4/Makefile.am: Remove reference strerror_r.m4
+
+2007-11-16  Tony Abou-Assaleh <taa@acm.org>
+
+        * po/sk.po: updated from the translation project
+
+2007-11-03  Tony Abou-Assaleh <taa@acm.org>
+
+        * po/*.po: get latest translations
+        * po/no.po: removed
+        * po/ky.po: added
+        * po/sk.po: added
+
+2007-10-10  Tony Abou-Assaleh <taa@acm.org>
+
+        * configure.ac.in: update version to 2.6-dev
+
+        * src/grep.c: update --version message
+
+2007-10-07  Tony Abou-Assaleh <taa@acm.org>
+
+        * src/grep.c: When -h and -H are combined, use the last specified,
+          Bug #15620, Patch #4866
+        * tests/foad1.sh: add tests for -h and -H
+
+        * ChangeLog: Add a copyright notice (years taken from commit logs),
+          add a license notice (taken from gnulib ChangeLog)
+
+        * TODO: update the link to a list of other grep implementations
+
+2007-06-29  Bernhard Rosenkraenzer <bero@arklinux.org>
+
+        * all files: GPLv3
+        * configure.ac.in: Change version number
+
+2006-11-25  Bernhard Rosenkraenzer <bero@arklinux.org>
+
+        * configure.ac.in: Update version number for post-2.5.2 development
+
+2006-11-25  Bernhard Rosenkraenzer <bero@arklinux.org>
+
+        * configure.ac.in, grep.spec: Update version number
+
+        * Makefile.cvs: Update to work with current autoconf scripts
+
+        * po/Makefile.in.in: Adjust to work with automake 1.1x
+
+2006-08-19  Bernhard Rosenkraenzer <bero@arklinux.org>
+
+        * po/*: Sync with translation project
+
+        * doc/*: Assorted documentation updates, Patch #4610
+
+        * autogen.sh, configure.in, configure.ac.in: Autogenerate
+          ALL_LINGUAS variable
+
+        * m4/strerror_r.m4, configure.ac.in: Fix detection of strerror_r
+
+        * lib/error.c: Remove bogus warning
+
+        * lib/savedir.c, lib/savedir.h, src/grep.c, doc/*:
+          Add --exclude-dir option (patch #5051)
+
+2005-11-18  Charles Levert  <charles_levert@gna.org>
+
+        * tests/foad1.sh: Use ": ${VERBOSE=}" so that the caller can
+          set it without modifying the script; the usual caller (Makefile)
+          still leaves it untouched (usually unset, so it's off by default).
+          Modify "-m1 -A99 '^...$'" tests that failed so that their
+          expectation now corresponds to the output currently produced
+          by grep.  Those tests used to expect that two selected (or
+          selectable) lines be output, even with -m1.  Nothing was
+          modified with other similar tests that output _context_ lines
+          after one selected line has been output with -m1; they used to
+          and still succeed.  Although tests/yesno.sh now provides a more
+          comprehensive framework for testing -m/-C feature interaction,
+          it doesn't exercise mixing them with anchors so the whole
+          relevant tests/foad1.sh test group is kept, notably to check
+          that grep doesn't crash when it is run.
+
+2005-11-17  Charles Levert  <charles_levert@gna.org>
+
+        On 2005-06-21, many changes were made that affected --color,
+        --only-matching, and --invert-match.  Some of them introduced a
+        misunderstanding between the concepts of matched/non-matched and
+        selected/rejected lines.  Furthermore, a few bugs with -v sneaked
+        in stemming from this.  This set of changes aims to rectify most
+        of this situation.  Some GREP_COLORS capabilities are also added
+        as a result of the clarification.  (Further issues with -v/-o/-C
+        feature interaction still remain to be sorted out.)
+
+        * src/grep.c: Rename/add global variables, macros, and capabilities:
+            SEP_CHAR_MATCH    -->  SEP_CHAR_SELECTED
+            SEP_CHAR_CONTEXT  -->  SEP_CHAR_REJECTED
+            SEP_STR_CHUNK     -->  SEP_STR_GROUP
+            grep_color        -->  selected_match_color + context_match_color
+            mlines_color      -->  selected_line_color
+            context_color     -->  context_line_color
+            "ml"              -->  "sl"
+            "mt"              -->  "mt" = "ms" + "mc"
+                              -->  "rv" (reverse "sl"/"cx" when -v)
+        * src/grep.c (color_cap_mt_fct, color_cap_rv_fct): New functions.
+        * src/grep.c (print_line_tail): Renamed color argument to line_color.
+        * src/grep.c (print_line_middle, prline): Revert part of the logic to
+          a pre-2005-06-21 one so that lines with matches have their matched
+          parts properly handled again ("m?" colors or --only-matching),
+          whether or not -v is specified.  Whole line colors ("sl", "cx")
+          follow a selected / rejected(context) logic, as opposed to a
+          matched / non-matched one (unless "rv").  Matched text colors ("ms",
+          "mc") always follow a selected / rejected(context) logic,
+          regardless of "rv", because only matched lines use them anyway.
+          pr_line_middle() now takes additional line_color and match_color
+          arguments computed by prline() prior to calling that function.
+          The old logic was a buggy hybrid matched / rejected(context) one.
+        * src/grep.c (prpending, prtext, grepfile): Renamed macro invocations.
+        * src/grep.c (parse_grep_colors): Update top comment.
+        * src/grep.c (main): GREP_COLOR (singular) now sets both
+          selected_match_color and context_match_color.
+
+2005-11-16  Charles Levert  <charles_levert@gna.org>
+
+        * src/search.c (Pcompile): Clarify message for the -P option
+          not being supported so that users don't assume it's a run-time
+          problem, but know that it's a compile-time configuration choice.
+          Based on an idea by:  Benno Schulenberg <benno@nietvergeten.nl>.
+
+2005-11-13  Charles Levert  <charles_levert@gna.org>
+
+        * tests/yesno.sh: New file.  Test feature interaction
+          of -C, -v, -o, and -m.  This reveals bugs, including some I
+          introduced on 2005-06-21, but also others.
+        * tests/Makefile.am (TESTS): Add yesno.sh.
+        * tests/Makefile.am (CLEANFILES): Add cspatfile and csinput, as
+          created by fmbtest.sh.  Add yesno.txt, as created by yesno.sh.
+
+2005-11-11  Charles Levert  <charles_levert@gna.org>
+
+        * configure.in (ALL_LINGUAS): Add languages that were missing
+          from this variable (bg, ca, da, nb, tr), but that GNU grep supports
+          with a po/xx.po file.  Reported by Tony Abou-Assaleh <taa@acm.org>.
+
+        * src/search.c (Pcompile): Abort in error if -P and multiple patterns
+          are specified, with an error message explaining the situation.
+          Fixing this won't be simple; the '\n' characters separating the
+          patterns cannot just be replaced by '|' to create an alternation as
+          back-references are assumed to be local to each individual pattern.
+
+        * src/grep.c (parse_grep_colors, main): Replace all uses of
+          fprintf(stderr, _("%s: foo\n"), program_name, ...) with
+          error(0, 0, _("foo"), ...) for uniformization and simplification
+          of warning messages that will be up for localization.  (My bad.)
+
+2005-11-10  Charles Levert  <charles_levert@gna.org>
+
+        The introduction of the --only-matching and --color GNU extensions
+        to grep added the requirement that each execute() implementation
+        not only be able to identify matching lines as a whole, but also
+        individual "exact" matches within a line known to be matching,
+        from leftmost to rightmost match, when the output from matching
+        lines is actually produced.  The interface and implementations
+        of execute() were not up to it.  This set of changes aims to
+        rectify that situation.  Previously failing tests relative to
+        left anchors (^ and \<) and -w should now pass.  This fixes
+        <https://savannah.gnu.org/bugs/?func=detailitem&item_id=11579>,
+        <https://savannah.gnu.org/patch/?func=detailitem&item_id=1834>,
+        <https://savannah.gnu.org/bugs/?func=detailitem&item_id=8243>,
+        and possibly part of other, bigger, pending patches.  The problem
+        was also compounded by the POSIX requirement to support a pattern
+        list instead of just an individual pattern (for -G and -E as well).
+
+        * tests/foad1.sh: Test for increasing/decreasing-length word
+          matches, given pattern order, and leftmost/longest match.
+        * tests/fmbtest.sh: Modify test #6 according to new expectations.
+          Better document what tests #6 and #7 are actually for.  Eliminate
+          test #5 in favor of bringing tests #6 and #7 within the F G E loop.
+        * src/grep.h (EXECUTE_ARGS): Change last argument from "int exact"
+          to "char const *start_ptr".  Testing for "start_ptr" being non-NULL
+          retains the same semantics as testing for "exact" being non-zero.
+        * src/grep.c (print_line_middle): Call execute() with whole
+          buffer to work on, but using current position as start_ptr.
+        * src/grep.c (prpending, grepbuf): Call execute() with NULL
+          as start_ptr.
+        * src/search.c (EGexecute, Fexecute, Pexecute): When start_ptr is
+          non-NULL, return first match from it as an offset relative to buf.
+        * src/search.c (EGexecute): Consider all patterns if many and,
+          for an exact match, return the best one (leftmost, then longest).
+          Don't explore worst solutions, of course (branch and bound).
+
+2005-11-10  Charles Levert  <charles_levert@gna.org>
+
+        * src/grep.c (main): Fix a subtle memory allocation bug introduced
+          with the mb_icase_keys() function, which can call xrealloc() or
+          free() on keys, by making sure keys is always dynamically allocated.
+
+2005-11-09  Charles Levert  <charles_levert@gna.org>
+
+        * doc/grep.1, doc/grep.texi: Advise users to test for
+          "exit_status > 1" instead of "exit_status == 2" in order to
+          detect errors, for portability with other POSIX-compliant
+          implementations.
+
+2005-11-09  Charles Levert  <charles_levert@gna.org>
+
+        The following set of changes aims to make "egrep" and "fgrep"
+        minimal executable programs for legacy applications, instead of
+        shell scripts.  This "fgrep" is much smaller than "grep".
+        This set of changes appears more daunting than it really is.
+
+        * src/egrep.c, src/fgrep.c, src/esearch.c, src/fsearch.c: New files
+          that #define either EGREP_PROGRAM or FGREP_PROGRAM and #include
+          the corresponding generic (i.e., non e or f specific) *.c file.
+        * src/grepmat.c: Remove whole file.
+        * src/Makefile.am: Remove no-dependencies from AUTOMAKE_OPTIONS.
+          Add definitions to make "egrep" and "fgrep" specific standalone
+          executable programs that only use the source files they need.
+          Remove rules for "egrep" and "fgrep" shell scripts.
+        * src/grep.h: #define GREP_PROGRAM if both EGREP_PROGRAM and
+          FGREP_PROGRAM are #undef.  Only declare matchers[] in this case
+          along with the compile_fp_t and execute_fp_t function pointers
+          typedefs, otherwise declare prototypes for straight compile()
+          and execute() functions for the specialized "egrep" and "fgrep"
+          programs.  Remove the extern declaration for matcher.
+          Define COMPILE_RET, COMPILE_ARGS, EXECUTE_RET, EXECUTE_ARGS,
+          COMPILE_FCT, and EXECUTE_FCT helper preprocessor macros.
+        * src/grep.c (short_options, long_options, usage, main): Only
+          support -G, -E, -F, -P, and -X for GREP_PROGRAM, but not for
+          EGREP_PROGRAM or FGREP_PROGRAM.  Customize usage messages.
+        * src/grep.c (set_limits): New function with unchanged code,
+          called from main(), because it shouldn't be in install_matcher()
+          since it was already matcher-independent.
+        * src/grep.c (matcher): Add as static, only for GREP_PROGRAM.
+        * src/grep.c (setmatcher, install_matcher): Only for GREP_PROGRAM.
+        * src/grep.c (main): Remove any tweaking and dependence on argv[0].
+        * src/grep.c (print_line_middle, prpending, grepbuf, main): Call
+          compile() and execute() directly, not through a function
+          pointer dereferencing notation, so that it works with both
+          straight functions (in EGREP_PROGRAM and FGREP_PROGRAM) and
+          function pointers (in GREP_PROGRAM).
+        * src/search.c (<regex.h>, "dfa.h", dfa, pattern0, patterns,
+          pcount, dfaerror, kwset_exact_matches, kwsmusts): Only
+          include/declare/define if not FGREP_PROGRAM.
+        * src/search.c: Remove function prototypes for all functions
+          that are not used before their definition, since this is just
+          a hassle now with their varying names and conditional definition.
+        * src/search.c (GEAcompile): Rename from Ecompile().  Add new
+          syntax_bits argument/variable.  Use as compile() for EGREP_PROGRAM.
+          Put in the needed RE_ICASE fix, albeit commented-out for now.
+          Make sure to free() modified word/line pattern after use, if any.
+        * src/search.c (Gcompile): Merge with GEAcompile() then remove.
+        * src/search.c (Gcompile, Acompile, Ecompile): New small functions
+          that call GEAcompile(), now that matcher is not an extern variable.
+        * src/search.c (GEAcompile, Gcompile, Acompile, Ecompile,
+          Fcompile, Pcompile, EGexecute, Fexecute, Pexecute, matchers):
+          Only define when needed according to *GREP_PROGRAM, and rename
+          to just compile() and execute() when appropriate.
+        * grep/bootstrap/Makefile.try: Similar changes.
+
+2005-11-08  Charles Levert  <charles_levert@gna.org>
+
+        * README.DOS, TODO, grep.spec, doc/grep.1, doc/grep.texi,
+          src/grep.h, po/da.po, po/nb.po, po/no.po, po/sv.po:
+          Replace all capitalized "Grep" by a lowercase "grep", except
+          in citations.  Reported by Benno Schulenberg <benno@nietvergeten.nl>
+          from the <https://bugs.debian.org/190551>
+          entry in the Debian bug tracker.
+        * doc/grep.1, doc/grep.texi: Explain that the "egrep" and "fgrep"
+          commands are deprecated and provided for historical applications.
+          Replace some "egrep" uses by "grep -E" to promote the newer usage.
+          Typeset "zgrep" as a command.  Fix some spacing and punctuation bugs.
+
+2005-11-08  Julian Foad  <julianfoad@btopenworld.com>
+
+        * doc/grep.texi: Rewrite a poorly written usage example about
+          back-references, and tweak another.  New text by Benno Schulenberg.
+
+2005-11-04  Charles Levert  <charles_levert@gna.org>
+
+        * src/grep.c (mb_icase_keys): New function to properly lowercase
+          keys if match_icase.  The problem was that some multi-octet
+          characters can get longer or shorter upon this conversion, so that
+          it cannot just naively be done in place on the same memory buffer.
+        * src/grep.c (main): Call mb_icase_keys (and remove in-line code).
+
+        * tests/foad1.sh:  Duplicate three "-o -b" tests for the "-F"
+          mode because it relies on a different code path that deserves
+          the same kind of testing.
+
+2005-09-27  Stepan Kasal  <kasal@ucw.cz>
+
+        * doc/grep.1: Fix a typo.
+
+2005-08-24  Charles Levert  <charles_levert@gna.org>
+
+        * src/grep.c (print_line_middle): In case of an empty match,
+          make minimal progress and continue instead of aborting process
+          of the remainder of the line, in case there's still an upcoming
+          non-empty match.
+        * tests/foad1.sh: Add two tests for this.
+        * doc/grep.texi, doc/grep.1: Document this behavior, since
+          --only-matching and --color are GNU extensions which are
+          otherwise unspecified by POSIX or other standards.
+
+2005-07-26  Charles Levert  <charles_levert@gna.org>
+
+        * tests/pcre.sh: New file.  Add test 1.
+        * tests/Makefile.am: Add pcre.sh to TESTS.
+
+2005-07-07  Charles Levert  <charles_levert@gna.org>
+
+        * src/grep.c: Remove all xm capability code.
+
+2005-07-05  Charles Levert  <charles_levert@gna.org>
+
+        * doc/grep.texi: Add missing green color in GREP_COLORS description.
+        * doc/grep.1: Fix typo and reorganize GREP_COLORS documentation.
+
+        * src/kwset.c (DEPTH_SIZE): New macro to anticipate
+          architectures/compilers where CHAR_BIT is not 8 (we assume it
+          won't be less than 4, which would be non-standard and unlikely).
+          Checked to hold for CHAR_BIT up to 1023 (and maybe more)!
+        * src/kwset.c (kwsincr): Use DEPTH_SIZE in two array declarations.
+
+        * src/kwset.c (kwsincr): When a second obstack_alloc() call fails,
+          free what the first one successfully allocated by popping it
+          off the top of the obstack, before returning in error, just
+          to keep things clean.
+        * src/kwset.c (kwsprep): Verify return value of obstack_alloc()
+          and return a memory exhausted error if so.  This function had
+          a prototype to return such errors, but never did.
+
+2005-07-04  Charles Levert  <charles_levert@gna.org>
+
+        * src/kwset.c: Readability changes.
+          Replace uses of 0 for pointer values by NULL.
+          Generalize use of existing U() macro to whole file.
+
+        * src/kwset.c (kwsprep): Use memset() and memcpy() when appropriate.
+
+        * src/kwset.c (kwsprep): Move three variable declarations to
+          the single {}-block where they are used.
+
+        * src/kwset.c (kwsprep): Optimize search for mind2 value by
+          starting from the end of the target[] array.
+
+2005-06-22  Charles Levert  <charles_levert@gna.org>
+
+        * grep/autogen.sh, grep/src/Makefile.am, grep/tests/backref.sh,
+          grep/tests/bre.sh, grep/tests/empty.sh, grep/tests/ere.sh,
+          grep/tests/file.sh, grep/tests/fmbtest.sh, grep/tests/foad1.sh,
+          grep/tests/khadafy.sh, grep/tests/options.sh,
+          grep/tests/spencer1.sh, grep/tests/spencer2.sh,
+          grep/tests/status.sh, grep/tests/warning.sh: As per autoconf's
+          "Portable Shell Programming" guidelines, replace all instances
+          of "#!/bin/sh" by "#! /bin/sh" (notice the space).
+
+2005-06-21  Charles Levert  <charles_levert@gna.org>
+
+        * src/grep.c (nlscan): Make this function more robust by removing
+          the undocumented assumption that its "lim" argument points
+          right after a line boundary.  This will be used later to fix
+          --byte-offset's broken behavior.  Patch #3769.
+
+        * src/grep.c (main): Add a test to check if -o/--only-matching
+          and context lines are both specified and if so, set both context
+          specifications (before and after) to zero then print an explicit
+          warning to stderr explaining what was done and why (as opposed
+          to drastically aborting the process in error).  Patch #3768.
+          Other code needs this zero setting to work correctly without
+          having to repeatedly test for this conflictual condition.
+
+        * tests/foad1.sh: Add tests combining -o, -n/-b/-H, and -i,
+          since there are separate code paths for -i.  Add tests combining
+          -o, -n/-b/-H, and -3, since any context line specification
+          should be ignored when combined with -o.
+        * src/grep.c (print_line_head): New function, culled off the
+          top content of prline().  Adds a guard against "lastnl" having
+          already reached "lim", which can happen when if the function
+          is called more than once per line.
+        * src/grep.c (prline): Now calls print_line_head(), not only at
+          the beginning to replace the moved code when -o is not
+          specified, but also for each match when -o is specified (two
+          code paths with this).  Patch #3770, more or less.  This makes
+          all tests combining -o and -n/-b/-H pass, which they didn't
+          before.  Fixes bug #12727.
+
+        * src/grep.c (SEP_CHAR_MATCH, SEP_CHAR_CONTEXT, SEP_STR_CHUNK):
+          New macros for ':', '-', and "--".  Used throughout the file.
+          Will be used even more in upcoming updates, so good to have now.
+
+        * src/grep.c: The new GREP_COLORS (plural) framework, only
+          partially used at this point to make for a simpler initial
+          patch in CVS.  A subset of patch #3644 on Savannah.
+        * src/grep.c (color_cap_ne_fct, color_cap_xm_fct, print_filename,
+          print_sep, parse_grep_colors): New functions.
+        * src/grep.c (prtext, grepfile, main): Existing functions modified
+          to use the new framework.
+        * doc/grep.texi, doc/grep.1: Document GREP_COLORS.
+
+        * src/grep.c: The new -T/--initial-tab framework, only
+          partially used at this point to make for a simpler initial
+          patch in CVS.  A subset of patch #3644 on Savannah.
+          The option name/calling convention is the same as for GNU diff.
+        * doc/grep.texi, doc/grep.1: Document -T/--initial-tab.
+
+        * src/grep.c (print_offset): Renamed print_offset_sep() to better
+          represent its new functionality; new calling convention.
+        * src/grep.c (print_offset, print_line_head): Use and implement
+          missing parts of the GREP_COLORS and -T/--initial-tab frameworks.
+
+        * src/grep.c (print_line_middle, print_line_tail): New functions,
+          unused for now, intended to allow a simplifying rewrite of
+          prline().  Adding them first will make for cleaner CVS patches.
+
+        * src/grep.c (prline): Simplifying rewrite using
+          print_line_middle() and print_line_tail().  No longer attempts
+          to find matches to colorize in context lines, thus avoiding
+          costly calls to (*execute)(), since we know by then that they
+          can't contain any by definition.  There are no longer four
+          different code paths whether -o and -i are each specified
+          or not; they have been unified into one, which should help
+          avoid bugs similar to previous ones due to not updating all
+          code paths in a synchronized fashion.  The -i code has been
+          explicitly marked since it doesn't belong there and should
+          be removed as soon as other -i code elsewhere is fixed.
+          The remaining GREP_COLORS functionality is implemented.
+          Savannah patch #3771 and patch #3644, heavily reworked.
+
+        * src/grep.c (color_cap_ne_fct, color_cap_xm_fct,
+          print_line_middle, print_line_tail): Make these four functions
+          static.
+
+2005-06-20  Charles Levert  <charles_levert@gna.org>
+
+        * src/grep.c: Extensively document the SGR/EL-to-Right issue.
+
+        * src/grep.c: Explain the context and logic for choosing default
+          --color screen attributes (SGR parameters).
+
+2005-06-15  Charles Levert  <charles_levert@gna.org>
+
+        * tests/foad1.sh: Since this script is run by /bin/sh, it
+          must work under posix mode.  That means not using assignment
+          statements right before a function call (LC_ALL=... grep_test,
+          in this case), because it won't do the expected thing.
+
+2005-06-14  Charles Levert  <charles_levert@gna.org>
+
+        Fix bug #11022 (Line wrapping causes GREP_COLOR background
+        color to "smear") by outputting a "clear to end of line"
+        control sequence after each SGR (Select Graphic Rendition)
+        control sequence (START and END).  This also avoid similar
+        problems with HT (tab) characters.
+
+        * src/grep.c (SGR_START, SGR_END, PR_SGR_FMT, PR_SGR_FMT_IF,
+          PR_SGR_START, PR_SGR_END, PR_SGR_START_IF, PR_SGR_END_IF):
+          New macros.
+        * src/grep.c (prline): Use the new macros.
+        * tests/fmbtest.sh, tests/foad1.sh: Adjust the regression tests
+          to expect the new control sequences.
+
+2005-05-06  Charles Levert  <charles_levert@gna.org>
+
+        * TODO: Add a few more projects and derived versions to check out.
+
+2005-05-05  Charles Levert  <charles_levert@gna.org>
+
+        * README-alpha: Document grep-commit mailing list.
+        * TODO: Add various stuff culled from the mailing list.
+
+2005-05-02  Charles Levert  <charles_levert@gna.org>
+
+        * 78 files: Update FSF's civic address, zip code,
+          and citizen relocation code.
+
+2005-04-29  Charles Levert  <charles_levert@gna.org>
+
+        * tests/foad1.sh: Add -b and tricky UTF-8 tests.
+          Display LC_ALL when its value is special.  Patch #3962.
+
+        * ABOUT-NLS: Sync with CVS revision 1.9
+          of 2005-04-13T11:21:55Z from GNU gettext
+          on ":pserver:anoncvs@sources.redhat.com:/cvs/gettext",
+          file "gettext/gettext-runtime/ABOUT-NLS".
+
+2005-04-29  Julian Foad  <julianfoad@btopenworld.com>
+
+        * Makefile.am: Remove reference to long-gone files PATCHES.AC and
+          PATCHES.AM.  Thanks to Tony Abou-Assaleh for this.  Patch #3961.
+
+2005-04-29  Charles Levert  <charles_levert@gna.org>
+
+        * src/grep.c: Fix typo in prline()'s --only-matching --ignore-case
+          code path; this fixes bug #9768 and passes one more test
+          in tests/foad1.sh.  This whole code path should be removed in
+          the future, when other --ignore-case issues are dealt with.
+
+2005-04-28  Julian Foad  <julianfoad@btopenworld.com>
+
+        * tests/foad1.sh: Remove Bash-specific syntax.
+
+        * src/dfa.c: Fix a DFA bug whereby a bracket "[" was matched by the
+          pattern "[[:alpha:]]" in UTF-8 locales.  Patch #3800, by Tim Waugh.
+        * tests/foad1.sh: Add a regression test for that.
+
+2005-04-27  Julian Foad  <julianfoad@btopenworld.com>
+
+        Fix a bug reported by Elliott Hughes in patch #1834 whereby "grep -Fw"
+        would miss matches after a non-word occurrence of the pattern.  Fix by
+        Gordon Lack; tests based on reproduction recipes by Gordon Lack.
+
+        * src/search.c (Fexecute): Fix the "match_words" case.
+        * tests/foad1.sh: Modify the test framework so that the "PATTERN"
+          argument is optional.  Add a regression test and a test for
+          a similar case that other proposed patches have got wrong.
+
+        Add more tests, some initially failing.
+
+        * tests/foad1.sh: Add tests for "--color", most initially failing.
+        * tests/fmbtest.sh: New file of tests for "grep -i" with multi-byte
+          chars, by Jakub Jelinek, from patch #3808: Red Hat's "tests" patch.
+          Initially, test #4 fails (in all three modes).
+        * tests/Makefile.am: Include the new tests file "fmbtest.sh".
+
+2005-04-12  Julian Foad  <julianfoad@btopenworld.com>
+
+        * tests/bre.tests: Enable a regression test for bug #9519.
+        * src/grep.c: Fix a seg-fault in "-o -i": patch #1939.
+        * tests/foad1.sh: New tests for "-o", initially all failing.
+        * tests/Makefile.am: Include the new tests file "foad1.sh".
+        * tests/spencer2.sh: Be consistent with "spencer1.sh" in the
+          naming of associated files.
+        * src/grep.c: Fix off-by-one error in prpending().
+          Patch #3840 by Claudio Fontana.
+        * tests/foad1.sh: Add tests by Pavol Gono for patch #3840.
+          Some of them still fail, but no longer seg-fault due to that bug.
+
+2005-04-11  Julian Foad  <julianfoad@btopenworld.com>
+
+        * doc/grep.texi, doc/grep.1: Document USG grep -s too.
+          Based on a patch by Paul Eggert; suggested by Keith Marshall.
+        * src/dfa.c (lex): Fix bug #9519: "echo do^re | grep do^re" was
+          failing to find a match.
+
+2005-03-09  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/search.c (EGexecute, Fexecute): Use xmalloc, not malloc.
+        (EGexecute): Handle the failure in one place, goto there.
+
+2005-02-26  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/grep.c (get_nondigit_option): Don't give up too early.
+        * src/search.c (Pexecute): Add a comment explaining that this
+          situation should not happen.
+
+2005-02-22  Claudio Fontana  <sick_soul@users.sourceforge.net>  (tiny change)
+
+        * src/search.c (Pexecute): Consider eof case when delimiting
+          matching line.  Fixes bug #4531.
+
+2005-02-23  Julian Foad  <julianfoad@btopenworld.com>
+
+        * po/ko.po: Fix email address.
+        * README-alpha: Fix email addresses and clarify the notes.
+        * tests/backref.sh: Fix trivial typos.
+
+2005-02-08  Bruno Haible  <bruno@clisp.org>  (tiny change)
+
+        * src/kwset.h (kwsincr, kwsprep): Change return type to 'const char *'.
+        * src/kwset.c (kwsincr, kwsprep): Likewise.
+
+2005-02-08  Arnold D. Robbins  <arnold@skeeve.com>
+            Stepan Kasal  <kasal@ucw.cz>
+
+        * src/mbsupport.h: Don't say the file is part of GAWK.
+        Make wording in explanatory comment more generic.
+
+2005-02-07  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/grep.c: Document that -X is undocumented.
+
+2005-01-16  Bruno Haible  <bruno@clisp.org>  (tiny change)
+            Stepan Kasal  <kasal@ucw.cz>
+
+        * configure.in: Add tests for iswctype, mbrlen, wcrtomb, wcscoll;
+          use AC_FUNC_MBRTOWC to check for mbrtowc and mbstate_t; move
+          AC_MBSTATE_T below it.
+        * src/grep.c: Include mbsupport.h to define MBS_SUPPORT uniformly.
+        * src/mbsupport.h: Don't test for HAVE_WCTYPE_T.
+
+2005-01-13  Arnold D. Robbins  <arnold@skeeve.com>
+
+        * src/dfa.c (dfaparse): Use LC_COLLATE whenever it is defined;
+          ENABLE_NLS has nothing to do with this.
+
+2005-01-07  Stepan Kasal  <kasal@ucw.cz>
+
+        * tests/status.sh: Added two tests--option '-s' should have no
+          influence on the exit status.
+
+2004-12-16  Stepan Kasal  <kasal@ucw.cz>
+
+        Cosmetic changes, mostly imported from gawk:
+
+        * src/dfa.c (lexstart): Removed unused variable.
+        (parse_bracket_exp_mb): Don't initialize different pointers in one
+          assignment
+        (lex): Don't initialize automatic arrays, it's invalid in pre-C89
+          compilers.
+        Various other typos.
+        * src/dfa.h, src/grep.c, src/search.c: Typos.
+
+2004-12-16  Isamu Hasegawa  <isamuh@jp.ibm.com>
+
+        From http://oss.software.ibm.com/linux/patches/?patch_id=25
+
+        * src/search.c: Patch for i18n correctness.
+        * src/grep.c: Likewise.
+        * src/dfa.c: Likewise.
+        * lib/regex.c: Likewise.
+
+2004-12-15  Julian Foad  <julianfoad@btopenworld.com>
+
+        Changes to documentation and help text, mostly from Stepan Kasal.
+
+        * doc/grep.texi: Minor fixes of phrasing.
+        * doc/grep.1: Likewise.
+        * src/grep.c: Likewise.
+
+2004-12-01  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/grep.c (usage): Use "FILE_PATTERN" for --include and --exclude,
+          change "only print" to "print only".
+        * doc/grep.1: Likewise; state that wildcard matching is used.
+          Move some options so that they are sorted alphabetically.
+        * dfa.c, NEWS: Fix typos.
+
+2004-11-28  Benno Schulenberg  <benno@nietvergeten.nl>  (tiny change)
+
+        * src/grep.c (usage): Clean up several details in the usage string.
+        * doc/grep.1: Fix descriptions of --include and --exclude.
+        * doc/grep.texi: Likewise.
+
+2004-11-23  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/Makefile.am: The egrep and fgrep script now use their own
+        path to construct the full pathname of grep.
+
+2004-11-23  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/Makefile.am: Merged the rules for creating the egrep and
+        fgrep script.
+
+2004-11-23  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/grep.c (usage): Make sure both copies of the "usage"
+          strings match.  Add "(C)" to the copyright notice.
+        * src/dfa.c: Changed "out of memory" to "memory exhausted" to
+          match messages elsewhere in the source.
+
+2004-11-22  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/search.c: Use mbsupport.h .
+        * src/dfa.c: Move the inclusion of mbsupport.h lower.
+
+2004-11-22  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/grep.c (main): Use PACKAGE_STRING for --version.
+
+2004-11-20  Benno Schulenberg  <benno@nietvergeten.nl>  (tiny change)
+
+        * src/grep.c (reset): Move the stat check ...
+        (grepfile): ... here, and also check for a fifo.
+
+2004-11-20  Stepan Kasal  <kasal@ucw.cz>
+
+        This change is based on a suggestion by Elliott Hughes.
+
+        * src/grep.c (usage): Use PACKAGE_BUGREPORT.
+        * po/*.po: Hacked the current translation again.
+
+2004-11-20  Stepan Kasal  <kasal@ucw.cz>
+
+        * configure.in: Added a copyright notice (using gawk as a template).
+        (AC_INIT, AM_INIT_AUTOMAKE): Changed to the "new" form so that
+          the PACKAGE_* symbols get defined correctly in config.h.
+
+2004-11-20  Stepan Kasal  <kasal@ucw.cz>
+
+        * ./cvsignore: Amended several .cvsignore files and
+          removed *.gmo, acinclude.m4 and stamp-h.in from the root one.
+        * m4/init.m4: Nuked, it was breaking current automake.
+        * m4/Makefile.m4: Removed init.m4.
+        * autogen.m4: Drop support for legacy autoconf; tell whether the
+          auto tools exited successfully or not; fix the permissions of
+          tests/*.sh--CVS doesn't provide a way to fix it.
+
+2004-11-19  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/dfa.c: Removed old version of gofast patch, from 2003-05-30.
+        * src/search.c (check_multibyte_string): Likewise.
+
+2004-11-19  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/dfa.c: Added some simple changes from gawk.
+        * src/mbsupport.h: Imported from gawk.
+
+2004-11-11  Stepan Kasal  <kasal@ucw.cz>
+
+        * tests/spencer1.awk: Use only lines with 3 fields.
+        * tests/spencer1.tests: Disable #55 for now.
+        * tests/ere.tests, tests/bre.tests: Add "TO CORRECT" to disabled
+          tests which had empty $4.
+        * tests/backref.sh: Modify #2 so that current glibc regex can
+          handle it in finite time.
+
+2004-11-12  Stepan Kasal  <kasal@ucw.cz>
+
+        Change bug-gnu-utils address to bug-grep, on many places; there
+        is no need to have the word "grep" in subject then.
+        Thanks to Tony Abou-Assaleh and Benno Schulenberg for pointing
+        out this.
+
+2004-11-02  Stepan Kasal  <kasal@ucw.cz>
+
+        * README-alpha: Remove obsolete instructions about CVS, redirect
+          the reader to savannah web.
+
+2004-09-26  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/search.c (check_multibyte_string, Gcompile, Ecompile): Replace
+          malloc with xmalloc.
+        * src/dfa.c (dfamust): Replace two calls to 'malloc' by MALLOC.
+
+2003-07-23  Stepan Kasal  <kasal@ucw.cz>
+
+        * src/Makefile.am: Add the egrep and fgrep scripts to CLEANFILES.
+
+2003-07-23  Stepan Kasal  <kasal@ucw.cz>
+        * tests/backref.sh: Messages fixed.
+
+2003-07-08  David Kaelbling  <drk@sgi.com>  (tiny change)
+        * src/dfa.c: remove non-constant initializers from dfa.c
+
+2003-06-16  Stepan Kasal  <kasal@ucw.cz>
+        * doc/grep.1: two typos "--line-buffered [...] penalty"
+        * doc/grep.texi: a typo
+
+2003-06-12  Bernhard Rosenkraenzer <bero@arklinux.org>
+        * README-alpha: Mention bug tracking system and grep-devel-list
+        * tests/spencer1.tests: Fix test 55, as noted by Tim Waugh
+        * src/search.c: Speed up multibyte support (Patch from Tim Waugh)
+
+2003-06-05  Stepan Kasal  <kasal@ucw.cz>
+        * tests/formatbre.awk, tests/formatere.awk: probably unused, so
+          I've removed them.
+
+2003-06-05  Stepan Kasal  <kasal@ucw.cz>
+        * intl/Makefile: remove generated file.
+
+2003-06-04  Stepan Kasal  <kasal@ucw.cz>
+        * src/dfa.c: typos fixed.
+
+2003-05-30  Bernhard Rosenkraenzer <bero@arklinux.org>
+        * src/dfa.c: Speed up multibyte support (Patch from Tim Waugh)
+
+2003-01-18  Bernhard Rosenkraenzer <bero@arklinux.org>
+        * src/grep.c: Fix -i -o combination (Patch from Tim Waugh)
+
+2002-03-26  Bernhard Rosenkraenzer <bero@arklinux.org>
+
+        * 2.5.1 Release.
+
+2002-03-26  Bernhard Rosenkraenzer <bero@arklinux.org>
+        * src/grep.c: Don't fail if we don't have an stdout fd and -q
+          is used (happens e.g. on calls from hotplug scripts)
+        * src/grep.c: Don't hang forever if fed with an empty string to
+          grep for and --color enabled
+        * src/grep.c: Fix infinite loop on
+          echo "1 one" | grep -E "[0-9]*" -o
+          echo "1 one" | grep -E "[0-9]*" --color
+        * po/*: Sync with translation project
+        * src/grep.c, src/Makefile.am, configure.in: Add patch from
+          Paul Eggert <eggert@twinsun.com> to comply with ridiculous
+          guidelines (don't act differently if invoked as egrep or fgrep)
+        * configure.in: Bump version number, require a recent autoconf
+
+2002-03-14  Bernhard Rosenkraenzer <bero@arklinux.org>
+        * src/Makefile.am, po/Makefile.in.in: Support DESTDIR properly
+        * tests/bre.tests: Add fix from
+          Peter Breitenlohner <peb@mppmu.mpg.de>
+
+2002-03-13  Bernhard Rosenkraenzer <bero@arklinux.org>
+        * configure.in, m4/regex.m4, m4/malloc.m4, m4/realloc.m4:
+          Don't set LIBOBJS directly, autoconf 2.53 doesn't like it
+        * intl/*: Sync with gettext 0.11
+        * po/*: Sync with translation project
+        * configure.in, src/Makefile.am: Don't duplicate code - make
+          egrep and fgrep links to grep and set matcher based on
+          application name, suggestion from
+          Guillaume Cottenceau <gc@mandrakesoft.com>
+        * src/grep.c: (prline) Add fix for -i --color from
+          Jim Meyering <meyering@lucent.com>
+        * configure.in: Version 2.5; release
+
+2002-01-23  Bernhard Rosenkraenzer <bero@arklinux.org>
+        * configure.in: Version 2.5g
+        * Makefile.cvs, grep.spec: Add packaging tools
+        Merge djgpp changes from Andrew Cottrell <anddjgpp@ihug.coml.au>:
+        * src/grep.c: Added conditional compilation for DJGPP
+        * djgpp: remove directory as it is no longer required with DJGPP 2.03
+                 (or 2.04 when released)
+        * README.DOS: Moved djgpp/readme to readme.dos
+        * PATCHES.AC, PATCHES.AM: delete files - redundant
+        * configure.in, Makefile.am: remove djgpp directory from list
+
+2002-01-22  Bernhard Rosenkraenzer <bero@arklinux.org>
+        * doc/grep.texi, doc/grep.1, NEWS: Document --label
+        * po/ru.po: Sync with translation project
+        * po/grep.pot: Sync with source
+
+2002-01-18  Bernhard Rosenkraenzer <bero@arklinux.org>
+        * src/grep.c: Add --label, based on patch from Stepan Koltsov
+
+2001-11-20  Bernhard Rosenkraenzer <bero@arklinux.org>
+        * autogen.sh: Don't hardcode aclocal dir
+
+2001-11-19  Bernhard Rosenkraenzer <bero@arklinux.org>
+        * src/grep.c: Add --only-matching (-o) switch (see NEWS)
+        * doc/grep.texi, doc/grep.1, NEWS: Document changes
+        * configure.in, lib/Makefile.am: Don't use internal getopt if
+          we're on a system that provides a working getopt function
+
+2001-09-25  Bernhard Rosenkraenzer <bero@arklinux.org>
+        * configure.in: Detect pcre correctly even when it's in
+          non-standard locations, using pcre-config
+        * src/grep.c: Add --color={always,never,tty} argument (like in ls)
+        * src/grep.c: Turn off blinking in the default colorization
+        * src/grep.c: Add --devices (-D) switch (analogous to --directories)
+        * src/dfa.c: Fix an i18n bug: echo "A" | grep '[A-Z0-9]' wouldn't work
+          in non-C-Locales on systems using current versions of glibc.
+        * AUTHORS: Change maintainer, credit Alain for his work until now
+        * configure.in, m4/decl.m4, m4/dosfile.m4, m4/gettext.m4,
+          m4/init.m4, m4/install.m4, m4/largefile.m4, m4/lcmessage.m4,
+          m4/header.m4, m4/isc-posix.m4, m4/missing.m4, m4/progtest.m4,
+          m4/sanity.m4:
+          Fix build with autoconf 2.5x, retain 2.1x compatibility for now
+        * autogen.sh: Add some crude hacks to make it possible to build with
+          both autoconf 2.5x and 2.1x
+        * acconfig.h: removed (no longer required)
+        * Makefile.am: add cvs-clean target
+        * doc/grep.texi, doc/grep.1, NEWS: Document changes
+          (--color, --devices, -D)
+        * src/dfa.c, src/grep.c: Add vim modelines
+
+2001-08-30  Alain Magloire
+
+        * configure.in: Add gl in ALL_LINGUAS.
+
+2001-08-30  Kurt D Schwehr
+
+        * doc/grep.1: Warn that grep insert a "--" between groups of matches,
+        when using the context options.
+        * doc/grep.texi: Likewised.
+
+2001-08-25  Heikki Korpela
+
+        * doc/grep.texi: Point out that some Platforms do not support
+        reading of directories and silently ignore them.
+
+2001-08-21  Alain Magloire
+
+        * lib/malloc.c: New file:
+        * lib/realloc.c: New file:
+        * lib/Makefile.am: Add malloc.c and realloc.c in EXTRA_DIST.
+
+2001-07-31  Alain Magloire
+
+        * po/*.po: New files from the translation team:
+        grep-2.5e.de.po  grep-2.5e.el.po  grep-2.5e.eo.po grep-2.5e.es.po
+        grep-2.5e.et.po  grep-2.5e.fr.po  grep-2.5e.gl.po grep-2.5e.it.po
+        grep-2.5e.pl.po  grep-2.5e.sl.po
+
+2001-07-31  Andreas Schwab
+
+        * src/grep.c: Fix all uses of error to pass a proper format
+        string.
+
+2001-07-29  Alain Magloire
+
+        * grep/src/grep.c (usage): Typos corrected.
+        Patches from Santiago Vila.
+
+2001-07-29  Alain Magloire
+
+        David Clissold, wrote:
+        a small bug in the GNU grep 2.4.2, which may have gone unnoticed
+        because it only causes a failure if building on a system with large
+        files enabled (e.g. an "off_t" is a "long long" rather than a "long").
+        savedir() takes on off_t argument, but in grepdir() the parameter
+        is cast to an (unsigned).  Well, if an off_t is larger than an int,
+        the value gets truncated.  This would not normally have an effect on a
+        little-endian platform (unless the file is >2GB), but on a big-endian
+        system it will always fail.  The external effect is that
+        "grep -r foo dir_name" fails with ENOMEM (from malloc() within
+        savedir()).
+
+        * grep/src/grep.c (grepdir): Remove the (unsigned) cast when calling
+        savedir().
+        Patch from David Clissold.
+
+2001-07-29  Alain Magloire
+
+        * grep/doc/grep.texi: In Bugs report use {n,m} for consistency.
+        * grep/doc/grep.1: Likewised.
+        Noted by Steven Lucy.
+
+2001-04-27  Isamu Hasegawa
+
+        * dfa.c (mblen_buf) : New variable contains the amount of remain
+        byte of corresponding multibyte character in the input string.
+        (SKIP_REMAIN_MB_IF_INITIAL_STATE) : Use mblen_buf.
+        (match_anychar) : Use mblen_buf.
+        (match_mb_charset) : Use mblen_buf.
+        (transit_state_consume_1char) : Use mblen_buf.
+        (transit_state) : Use inputwcs to get current (multibyte) character.
+        (dfaexec) : Add initialization of mblen_buf.
+
+2001-04-27  Isamu Hasegawa
+
+        * dfa.c (addtok) : Set appropriate value to multibyte_prop.
+        (dfastate) : Add the initialization of the variable.
+        (dfaexec) : Call transit_state if d->fail may transit by
+        multibyte characters.
+        (transit_state_singlebyte) : Clean up unnecessary code.
+        (transit_state_consume_1char) : Likewise.
+        (transit_state) : Add checking for word and newline.
+
+2001-04-19  Isamu Hasegawa
+
+        * search.c (check_multibyte_string) : Check the case when mbclen == 0.
+
+2001-04-11  Isamu Hasegawa
+
+        * search.c (check_multibyte_string) : Check the head of multibyte
+        characters, and optimize a bit.
+        (EGexecute) : Optimize a bit.
+        (Fexecute) : Fix the index.
+
+2001-04-02  Alain Magloire
+
+        * lib/regex.c: Update from GNU lib C, with the changes
+        provided by Paul Eggert.
+        * lib/posix/regex.h: Likewise.
+
+2001-02-17  Paul Eggert
+
+        Stop trying to support hosts that have nonstandard declarations for
+        mbrtowc and/or mbstate_t.  It's not worth the portability hassle.
+
+        * lib/quotearg.c (mbrtowc, mbsinit): Remove workaround macros
+        for hosts that have mbrtowc but not mbstate_t, as we now
+        insist on proper declarations for both before using mbrtowc.
+
+2001-03-18  Alain Magloire
+
+        * configure.in: Call AC_MBSTATE_T.
+        * Makefile.am: Add mbstate_t.m4
+        * m4/Makefile.am: Add mbstate_t.m4
+        * m4/mbstate_t.m4: New m4 macro.
+        * lib/strtol.c: Define CHAR_BITS.
+        Uwe H. Steinfeld, Ruslan Ermilov, Volkert Bochert, noted
+        that mbstate_t was not define for certain platforms.
+
+2001-03-18  Paul Eggert
+
+        * src/grep.c (fillbuf): Fix storage allocation performance
+        bug: buffer was doubling in size in many cases where it didn't
+        have to.
+
+2001-03-17  Paul Eggert
+
+        * src/grep.c (fillbuf): Avoid unnecessary division by 2.
+        Don't check xrealloc return value; it's guaranteed to be nonzero.
+        (fillbuf, grepdir): Use xalloc_die rather than error; it's shorter.
+
+2001-03-17  Alain Magloire
+
+        * src/grep.c (context_length_arg): error () passing wrong format.
+        Spotted by Jim Meyering.
+
+2001-03-07  Alain Magloire
+
+        * README-alpha: Removed reference to GNU tar, add the location
+        of the CVSROOT.
+
+2001-03-06  Alain Magloire
+
+        Only the Regex patterns should be split in an array, patterns[].
+        The dfa and KWset compiled patterns should remain global and the
+        patterns compiled all at once.
+
+        * src/search.c: include "error.h" and "xalloc.h" to get prototyping
+        of x*alloc() and error().
+        (kwsinit): Reverse to previous behaviour and takes no argument.
+        (kwsmusts): Likewised.
+        (Gcompile): For the regex pattern, split them and each pattern
+        is put in different compiled structure patterns[]. The patterns
+        are given to dfacomp() and kwsmusts() as is.
+        (Ecompile): Likewised.
+        (Fcompile): Reverse to the old behaviour of compiling the enire
+        patterns in one shot.
+        (EGexecute): If falling to GNU regex for the matching, loop in the
+        array of compile patterns[] to find a match.
+        (error): Many error () were call with arguments in the wrong order.
+        * tests/file.sh: Simple test to check for pattern in files.
+
+        Reaction to bug report fired by Greg Louis <glouis@dynamicro.on.ca>
+
+2001-03-06  Isamu Hasegawa
+
+        In multibyte environments, handle multibyte characters as single
+        characters in bracket expressions.
+
+        * src/dfa.h (mb_char_classes) : new structure.
+        (mbcsets): new variable.
+        (nmbcsets): new variable.
+        (mbcsets_alloc) : new variable.
+        * src/dfa.c (prtok) : handle MBCSET.
+        (fetch_wc): new function to fetch a wide character.
+        (parse_bracket_exp_mb) : new function to handle multibyte character
+        in lex().
+        (lex): invoke parse_bracket_exp_mb() for multibyte bracket expression.
+        (atom): handle MBCSET.
+        (epsclosure): likewise.
+        (dfaanalyze): likewise.
+        (dfastate): likewise.
+        (match_mb_charset): new function to judge whether a bracket match
+        with a multibyte character.
+        (check_matching_with_multibyte_ops) : handle MBCSET.
+        (dfainit): initialize new variables.
+        (dfafree): free new variables.
+
+2001-03-04  Alain Magloire
+
+        To get more in sync with other GNU utilities like GNU tar and fetish
+        all the supporting functions are now under lib.
+        Thanks to Jim Meyering, Volkert Bochert and Paul Eggert for
+        the code and the reminders.
+
+        * src/grep.c (fatal): Function removed, using error () from
+        lib/error.c instead.
+        (usage): Copyright updated.
+        (error): Function removed, using error () from lib/error.c instead,
+        adjust prototypes.
+        (prog): Global variable rename to program_name, to work with new
+        lib/error.c.
+        (xrealloc): Removed using lib/xmalloc.c.
+        (xmalloc): Removed using lib/xmalloc.c
+        (main): Register with atexit() to check for error on stdout.
+        * configure.in: Check for atexit(), call jm_MALLOC, jm_RELLOC and
+        jm_PREREQ_ERROR.
+        * tests/bre.awk: Removed the hack to drain the buffer since we
+        always fclose(stdout) atexit.
+        * tests/ere.awk: Likewise.
+        * tests/spencer1.awk: Likewise.
+        * bootstrap/Makefile.try: Update the Makefile to reflect the changes
+        in the new hierarchy.
+
+        * README-alpha: New File.
+        * m4/realloc.m4: New File.
+        * m4/malloc.m4: New File.
+        * m4/error.m4: New File.
+        * m4/Makefile.am: Updated.
+        * lib: New directory.
+        * lib/Makefile.am: New file.
+        * lib/closeout.c: New file.
+        * lib/closeout.h: New file.
+        * lib/fnmatch.c: New file.
+        * lib/fnmatch.h: New file.
+        * lib/atexit.c: New file.
+        * lib/error.c: New file.
+        * lib/error.h: New file.
+        * lib/quotearg.h: New file.
+        * lib/quotearg.c: New file.
+        * lib/xmalloc.c: New file.
+        * lib/posix: New directory.
+        * lib/posix/Makefile.am: New file.
+        * src/getopt.c: Moved to lib.
+        * src/getopt1.c: Moved to lib.
+        * src/getopt.h: Moved to lib.
+        * src/alloca.c: Moved to lib.
+        * src/exclude.c: Moved to lib.
+        * src/exclude.h: Moved to lib.
+        * src/hard-locale.h: Moved to lib.
+        * src/hard-locale.c: Moved to lib.
+        * src/isdir.c: Moved to lib.
+        * src/mechr.c: Moved to lib.
+        * src/obstack.c: Moved to lib.
+        * src/obstack.h: Moved to lib.
+        * src/regex.c: Moved to lib.
+        * src/regex.h: Moved to lib.
+        * src/posix: Moved to lib.
+        * src/posix/regex.h: Moved to lib.
+        * src/savedir.h: Moved to lib.
+        * src/savedir.c: Moved to lib.
+        * src/stpcpy.c: Moved to lib.
+        * src/strtoul.c: Moved to lib.
+        * src/strtol.c: Moved to lib.
+        * src/strtoull.c: Moved to lib.
+        * src/strtoumax.c: Moved to lib.
+        * src/xstrtol.c: Moved to lib.
+        * src/xstrtol.h: Moved to lib.
+        * src/xstrtoumax.c: Moved to lib.
+
+2001-03-01  Isamu Hasegawa
+
+        Implement the mechanism to match with multibyte characters,
+        and use it for 'period' in multibyte environments.
+
+        * dfa.h (mbps): new variable.
+        * dfa.c (prtok): handle ANYCHAR.
+        (lex): use ANYCHAR for 'period' in multibyte environments.
+        (atom): handle ANYCHAR.
+        (state_index): initialize mbps in multibyte environments.
+        (epsclosure): handle ANYCHAR.
+        (dfaanalyze): handle ANYCHAR.
+        (dfastate): handle ANYCHAR.
+        (realloc_trans_if_necessary): new function.
+        (transit_state_singlebyte): new function.
+        (match_anychar): new function.
+        (check_matching_with_multibyte_ops): new function.
+        (transit_state_consume_1char): new function.
+        (transit_state): new function.
+        (dfaexec): invoke transit_state if expression can match with
+        a multibyte character in multibyte environments.
+        (dfamust): handle ANYCHAR.
+
+2001-03-01  Alain Magloire
+
+        * src/exclude.c: New file.
+        * src/exclude.h: New file.
+        * src/grep.c (main): Took the GNU tar code to handle
+        the option --include, --exclude, --exclude-from.
+        Files are check for a match, with exlude_filename ().
+        New option --exclude-from.
+        * src/savedir.c: Call exclude_filename() to check for
+        file pattern exclusion or inclusion.
+        * configure.in: --disable-pcre rename to --disable-perl-regexp.
+
+
+2001-02-25  Alain Magloire
+
+        * src/dfa.c: Typo corrected.
+        Noted by Isamu Hasegawa.
+        * src/savedir.c: Typos corrected.
+
+2001-02-22  Alain Magloire
+
+        * src/savedir.c (isdir1): New function, calling isdir with
+        the correct pathname.
+
+2001-02-19  Isamu Hasegawa
+
+        Avoid incorrect state transition in multibyte environments.
+
+        * dfa.h (nmultibyte_prop): new variable.
+        (multibyte_prop): new variable.
+        * dfa.c (addtok): set inputwcs.
+        (dfastate): avoid incorrect state transition in multibyte
+        environments.
+        (dfaexec): likewise.
+        (dfainit): init multibyte_prop.
+        (dfafree): free multibyte_prop.
+        (inputwcs): new variable.
+
+2001-02-19  Isamu Hasegawa
+
+        Handle a multibyte character followed by '*', '+', and '{n,m}'
+        correctly.
+
+        * dfa.c (update_mb_len_index): new function.
+        Support for multibyte string.
+        (FETCH): call update_mb_len_index.
+        (lex): check cur_mb_index not to misunderstand multibyte characters.
+        (atom): make a tree from a multibyte character.
+        (dfaparse): initialize new variables.
+        (mbs): new variable.
+        (cur_mb_len): new variable.
+        (cur_mb_index): new variable.
+
+2001-02-18  Jim Meyering
+
+        * m4/dosfile.m4 (AC_DOSFILE): Move AC_DEFINEs out of AC_CACHE_CHECK.
+
+2001-02-17  Alain Malgoire
+
+        * doc/grep.texi: Document the new options and the new behaviour
+        back-references are local.  Use excerpt from Karl Berry regex
+        texinfo.
+
+        * bootstrap/Makefile.try: Added xstrtoumax.o xstrtoul.o hard-local.o
+
+2001-02-17  Alain Magloire
+
+        From Guglielmo 'bond' Bondioni :
+        The bug was that using a multi line file that contained REs (one per
+        line), backreferences in the REs were considered global (to the file)
+        and not local (to the line).
+        That is, \1 in line n refers to the first \(.\) in the whole file,
+        rather than in the line itself.
+
+        From Tapani Tarvainen :
+        # Re: grep -e '\(a\)\1' -e '\(b\)\1'
+        That's not the way it should work: multiple -e arguments
+        should be treated as independent patterns and back references
+        should not refer to previous ones.
+
+        From Paul Eggert :
+        GNU grep currently does not issue
+        diagnostics for the following two cases, both of which are erroneous:
+        grep -e '[' -e ']'
+        grep '[
+        ]'
+        POSIX requires a diagnostic in both cases because '[' is not a valid
+        regular expression.
+
+        To overcome those problems, grep no longer pass the concatenate
+        patterns to GNU regex but rather compile each patterns separately
+        and keep the result in an array.
+
+        * src/search.c (patterns): New global variable; a structure array
+        holding the compiled patterns.
+        Declare function prototypes to minimize error.
+        (dfa, kswset, regexbuf, regs): Removed, no longer static globals, but
+        rather fields in patterns[] structure per motif.
+        (Fcompile): Alloc an entry in patterns[] to hold the regex.
+        (Ecompile): Alloc an entry per motif in the patterns[] array.
+        (Gcompile): Likewise.
+        (EGexecute): Loop through of array of patterns[] for a match.
+
+2001-02-17  Alain Magloire
+
+        From Bernd Strieder :
+        # tail -f logfile | grep important | do_something_urgent
+        # tail -f logfile | grep important | do_something_taking_very_long
+        If grep does full buffering in these cases then the urgent operation
+        does not happen as it should in the first case, and in the second case
+        time is lost due to waiting for the buffer to be filled.
+        This is clearly spoken not grep's fault in the first place, but libc's.
+        There is a heuristic in libc that make a stream line-buffered only if a
+        terminal is on the other end. This doesn't take care of the cases where
+        this connection is somehow indirect.
+
+        * src/grep.c (line_buffered): new option variable.
+        (prline): if line_buffered is set fflush() is call.
+        (usage): line_buffered new option.
+        Input from Paul Eggert, doing setvbuf() may not be portable
+        and breaks grep -z.
+
+2001-02-16  Alain Magloire
+
+        Patch from Isamu Hasegawa, for multibyte support.
+        This patch prevent kwset_matcher from following problems.
+        For example, in SJIS encoding, one character has the codepoint 0x895c.
+        So the second byte of the character can match with '\' incorrectly.
+        And in eucJP encoding, there are the characters whose codepoints are
+        0xa5b9, 0xa5c8.  On the other hand, there is one character whose
+        codepoint is 0xb9a5.  So 0xb9a5 can match with 2nd byte of 0xa5b9
+        and 1st byte of 0xa5c8.
+
+        * configure.in: Add check for mbrtowc.
+        * src/search.c (check_multibyte_string): new function.
+        Support for multibyte string.
+        (EGexecute): call check_multibyte_string when kwset is set.
+        (Fexecute): call to check_multibyte_string.
+        (MBS_SUPPORT): new macro.
+        (MB_CUR_MAX): new macro.
+
+2001-02-16  Alain Magloire
+
+        * djgpp/config.bat: Fix for 4dos.com.
+        * m4/dosfile.m4 (HAVE_DOS_FILE_CONTENTS): Was not set.
+        Bugs noted and patched by Juan Manuel Guerrero.
+
+2001-02-16  Alain Magloire
+
+        A much requested feature, the possibility to select
+        files when doing recurse :
+        # find . -name "*.c" | xargs grep main {}
+        # grep --include=*.c main .
+        # find . -not -name "*.c" | xargs grep main {}
+        # grep --exclude=*.c main .
+
+        * src/grep.c (short_options): -R equivalent to -r.
+        (#ifdef) : Fix some inconsistencies in the use of #ifdefs, prefer
+        #if defined() wen possible.
+        (long_options): Add --color, --include and exclude.
+        (Usage): Description of new options.
+        (color): Rename color variable to color_option.
+        Removed 'always|never|auto' arguments, not necessary for grep.
+        (exclude_pattern): new variable, holder for the file pattern.
+        (include_pattern): new variable, hoder for the file pattern.
+        * src/savedir.c: Signature change, take two new argmuments.
+        * doc/grep.texi: Document, new options.
+        * doc/grep.man: Document, new options.
+
+2001-02-09  Alain Magloire
+
+        * src/grep.c (long_options): Added equivalent to -r with -R.
+        * src/grep.c (usage): added --color and --colour.
+        Noted with patch from, H.Merijn Brand and Wichert Akkerman.
+
+2001-02-09  Alain Magloire
+
+        Patch from Ulrich Drepper to provide hilighting.
+
+        * src/grep.c: New option --color.
+        (color): New static var.
+        (COLOR_OPTION): new constant.
+        (grep_color): new static var.
+        (prline): Now when color is set prline() will call the current matcher
+        to find the offset of the matching string.
+        * src/savedir.c: Take advantage of _DIRENT_HAVE_TYPE if supported.
+        * src/search.c (EGexecute, Fexecute, Pexecute): Take a new argument
+        when doing exact match for the color hiligting.
+
+2000-09-01  Brian Youmans
+
+        * doc/grep.texi: Typo fixes.
+
+2000-08-30  Paul Eggert
+
+        * doc/grep.texi (Usage): Talk about what "grep -r hello *.c"
+        means.
+
+2000-08-20  Paul Eggert
+
+        Handle range expressions correctly even when they match
+        strings with two or more characters.
+
+        * src/dfa.h (CRANGE): New enum value.  Comment fix.
+
+        * src/dfa.c: Include <locale.h> if HAVE_SETLOCALE.
+        Include "hard-locale.h".
+        (prtok): Print CRANGE.
+        (hard_LC_COLLATE): New static var.
+        (lex): Return CRANGE when parsing a character range in a hard locale.
+        Don't use strcoll; it's no longer needed and wasn't correct anyway.
+        Use unsigned rather than token to hold unsigned chars.
+        (addtok): Comment fix.
+        (atom): Treat a CRANGE as if it were (.\1), approximately.
+        (dfaparse): Initialize hard_LC_COLLATE.
+
+        * src/Makefile.am (base_sources): Add hard-locale.c, hard-locale.h.
+
+        * src/hard-locale.c, src/hard-locale.h: New files, taken from
+        textutils.
+
+2000-08-20  Paul Eggert
+
+        * tests/Makefile.am (TESTS_ENVIRONMENT): Add LC_ALL=C, since
+        some of the tests assume the C locale.
+
+2000-08-16  Paul Eggert
+
+        * src/search.c (Gcompile, Ecompile): -x overrides -w, for
+        consistency with fgrep.  Don't assume that sizes fit in 'int'.
+        Fix comments to match code.
+
+2000-06-06  Paul Eggert
+
+        * src/grep.c (grepdir): Don't look at st_dev when testing for
+        Mingw32 bug.
+
+2000-06-05  Paul Eggert
+
+        Port to Mingw32, based on suggestions from Christian Groessler
+        <cpg@aladdin.de>.
+
+        * src/isdir.c: New file, taken from fileutils.
+
+        * src/Makefile.am (base_sources): Add isdir.c.
+
+        * src/grep.c (grepfile): Use isdir instead of doing it inline.
+        (grepdir): Suppress ancestor check if the directory's inode and device
+        are both zero, as that occurs only on Mingw32 which doesn't support
+        inode or device.
+
+        * src/system.h (isdir): New decl.
+        (is_EISDIR): Depend on HAVE_DIR_EACCES_BUG, not D_OK.
+        Use isdir, not access.
+
+2000-06-02  Paul Eggert
+
+        Problen noted by Gerald Stoller <gerald_stoller@hotmail.com>
+
+        * src/grep.c (main): POSIX says that -q overrides -l, which
+        in turn overrides the other output options.  Fix grep to
+        behave that way.
+
+2000-05-27  Paul Eggert
+
+        Simplify and tune the buffer allocation strategy.  Do not reserve a
+        large save area: reserve only enough bytes to hold the residue, plus
+        page alignment.  Put a newline sentinel before the buffer, for speed
+        when searching backwards for newline.
+
+        * src/grep.c (ubuffer, bufsalloc, PREFERRED_SAVE_FACTOR, page_alloc):
+        Remove.  All uses changed.
+        (INITIAL_BUFSIZE): New macro.
+        (reset, fillbuf): Use simpler buffer allocation strategy.
+        (reset): Check for preposterously large pagesize that would cause
+        later calculations to overflow.
+        (fillbuf): Do not resize buffer if there's room at the end for
+        at least one more page.  This greatly increases performance when
+        reading from non-regular files that contain no newlines.
+        When growing the buffer, double its size instead of using a
+        more complicated algorithm.
+        (prtext, grep): Speed up by relying on the newline sentinel before the
+        start of the buffer.
+        (grep): When looking backwards for the last newline in a buffer,
+        stop when we hit the residue, since it can't contain a newline.
+        This avoids an O(N**2) algorithm when reading binary data from
+        a pipe.  Use a sentinel to speed up the backward search for newline.
+        (nlscan): Undo previous change; it wasn't needed and just complicates
+        and slows down the code a tad.
+
+2000-05-24  Paul Eggert
+
+        Handle very large input counts better. Bug noted by Jim Meyering.
+
+        * src/grep.c (totalcc, totalnl): Use uintmax_t, not off_t.
+        (add_count): New function.
+        (nlscan, prline, grep): Use it to check line and byte count overflows.
+        (nlscan, grep): Don't keep track of counts when not asked to; this
+        avoids unnecessary overflow diagnostics.
+        (print_offset_sep): Now takes args of type uintmax_t and char,
+        not off_t and int.
+
+2000-05-16  Paul Eggert
+
+        Problem reported by Bob Proulx <rwp@hprwp.fc.hp.com>, this patch
+        is base on his finding, with appropriate corrections.
+
+        * src/grep.c (main): Fix bug: -x and -w matched even when no
+        patterns were specified.
+        * tests/empty.sh: Test for -x and -w bug in grep 2.4.2.
+
+2000-04-24  Paul Eggert
+
+        POSIX conformance fixes: grep -q now exits with status zero
+        if an input line is selected, even if an error also occurs.
+        grep -s no longer affects exit status.
+
+        * src/grep.c (suppress_errors): Move definition earlier so
+        that suppressible_error can use it.
+        (suppressible_error): New function.
+        (exit_on_match): New var.
+        (grepbuf): If exit_on_match is nonzero, exit with status zero
+        immediately.
+        (grep, grepfile, grepdir): Invoke suppressible_error.
+        (main): -q sets exit_on_match.
+
+        * doc/grep.1, doc/grep.texi, NEWS:
+        Document -q's behavior as required by POSIX.
+
+        * tests/status.sh:
+        Test for -q and -s behavior as conforming to POSIX.
+
+2000-04-20  Paul Eggert
+
+        * tests/Makefile.am (TESTS_ENVIRONMENT):
+        Set GREP_OPTIONS to the empty string.
+
+2000-04-20  Paul Eggert
+
+        * tests/status.sh: Fix typo: test -b -> test -r.
+
+2000-04-20  Paul Eggert
+
+        * src/dfa.c (lex):
+        Do not assume that [c] is equivalent to [c-c]; this isn't true
+        if LC_COLLATE specifies that some characters are equivalent.
+        (setbit_case_fold): New function.
+        (lex): Use it to simplify the code a bit.
+
+2000-04-17  Paul Eggert
+
+        Do CRLF munging only if HAVE_DOS_FILE_CONTENTS, instead of
+        having it depend on O_BINARY (which leads to incorrect results
+        on BeOS, VMS, and MacOS).
+
+        * bootstrap/Makefile.try (DEFS): Add -DHAVE_DOS_FILE_CONTENTS.
+        * src/system.h (SET_BINARY): Define only if HAVE_DOS_FILE_CONTENTS.
+        (O_BINARY): Do not define.
+
+        * m4/dosfile.m4: Define HAVE_DOS_FILE_CONTENTS if it appears we're
+        using DOS.
+
+        * src/grep.c (undossify_input, fillbuf, dosbuf.c, prline, main):
+        Depend on HAVE_DOS_FILE_CONTENTS, not O_BINARY, when handling CRLF
+        matters.
+        (grepfile, main): Depend on SET_BINARY, not O_BINARY, when
+        handling binary files on hosts that care about text versus binary.
+
+2000-04-17  Paul Eggert
+
+        * lib/getpagesize.h (getpagesize): Define to B_PAGE_SIZE if
+        __BEOS__ is defined.  Based on a fix by Bruno Haible
+        <haible@clisp.cons.org>.
+
+2000-04-17  Bruno Haible
+
+        * src/system.h [BeOS]: Ignore O_BINARY.
+        * src/getpagesize.h [BeOS]: Define getpagesize() as B_PAGE_SIZE.
+
+2000-04-10  Paul Eggert
+
+        * doc/grep.1, doc/grep.texi, NEWS: -C now requires an operand.
+        * src/grep.c (short_options, long_options, main, usage): Likewise.
+        (context_length_arg): Renamed from ck_atoi.  Now reports an error
+        and exits if the number is out of range for a context length.
+        (get_nondigit_option): New function, which checks for overflow
+        correctly, and which does not parse nonadjacent strings of digits
+        into a single number.
+        (main): Use get_nondigit_option instead of doing the code inline.
+        With -A, -B, and -C, optarg is now guaranteed to be nonzero.
+
+2000-04-08  Paul Eggert
+
+        Now that we know that the input is always terminated by a
+        newline before the matching algorithms see it, clean up the
+        matching algorithms so that they no longer need to modify the
+        input by inserting a sentinel newline, and no longer worry
+        about running off the end of the buffer due to a missing sentinel.
+
+        * src/grep.c (nlscan, prpending, prtext, grepbuf): Do not
+        worry about running off the end of the input buffer, since
+        it's now guaranteed to end in the sentinel newline.
+        * src/search.c (EGexecute, Pexecute): Likewise.
+
+        * src/dfa.c (prtok, dfasyntax, dfaparse, copy, merge, state_index,
+        epsclosure, dfaexec, dfacomp):
+        Change many instances of "T *" to "T const *", to catch
+        any inadvertent programming errors made during this conversion.
+        * src/dfa.h (dfacomp, dfaexec, dfaparse): Likewise.
+        * src/grep.c (struct stats.parent, long_options, grepdir,
+        compile, execute, fillbuf, lastnl, lastout, nlscan, prline,
+        prpending, prtext, grepbuf, grep, grepfile, grepdir): Likewise.
+        * src/grep.h (struct matcher.compile, struct matcher.execute):
+        Likewise.
+        * src/kwset.c (struct kwset.trans, kwsalloc, kwsincr, treefails,
+        treedelta, hasevery, treenext, bmexec, cwexec, kwsexec): Likewise.
+        * src/kwset.h (kwsalloc, kwsincr, kwsexec): Likewise.
+        * src/search.c (kwsmusts, Gcompile, Ecompile, EGexecute, Pcompile,
+        Pexecute): Likewise.
+
+        * src/dfa.c (dfaexec):
+        Use size_t, not char *, to avoid worrisome casts to convert
+        char const * to char *.
+        * src/dfa.h (dfaexec): Likewise.
+        * src/grep.c (execute): Likewise.
+        * src/grep.h (execute): Likewise.
+        * src/kwset.c (bmexec, cwexec, kwsexec): Likewise.
+        * src/kwset.h (struct kwsmatch.offset, kwsalloc, kwsincr,
+        kwsexec): Likewise.
+        * src/search.c (EGexecute, Fexecute, Pexecute): Likewise.
+
+        * src/dfa.h (_PTR_T): Depend on defined __STDC__, not __STDC__.
+        (PARAMS): Depend on PROTOTYPES, not __STDC__.
+
+        * src/dfa.c (dfasyntax): Last arg is unsigned char, not int.
+        * src/dfa.h (dfasyntax): Likewise.
+
+        * src/dfa.h (struct dfa): Remove member newlines; no longer needed.
+        * src/dfa.c (build_state, dfaexec, dfafree): Do not worry
+        about special newline state.
+
+        * src/search.c (matchers): Move definition to end of file, so
+        that we don't need forward decls.
+        (lastexact): Remove.
+        (kwset_exact_matches): New var; subsumes old lastexact var.
+        All uses changed.
+
+        * src/dfa.c (index): Remove macro.
+        (REALLOC_IF_NECESSARY): Skip unnecessary test.
+        (tstbit, setbit, clrbit): Declare arg to be unsigned, to help compiler.
+        (copyset, zeroset, equal): Use C builtin primitives, to help compiler.
+        (dfaexec): Do not modify input string.
+        Remove newline parameter; no longer needed.
+        (comsubs): Use strchr, not index.
+
+        * src/grep.h (matchers): Use fixed name size, not pointer (as
+        there's no need for the extra flexibility).  All uses changed.
+
+        * src/kwset.h (struct kwsmatch.offset): Renamed from beg, with
+        change of type to size_t.  All uses changed.
+
+        * src/grep.c (reset): No longer need kludge for dfaexec.  Simplify.
+        (reset, grepbuf): Adjust to new interface for 'execute'.
+        (install_matcher): List is now terminated by null compile,
+        not null name.
+        Do not invoke setrlimit if that wouldn't change the limit.
+
+        * src/dfa.c (xcalloc, xmalloc, xrealloc, prtok, tstbit, setbit,
+        clrbit, copyset, zeroset, notset, equal, charclass_index,
+        looking_at, lex, addtok, atom, nsubtoks, copytoks, closure,
+        branch, regexp, copy, insert, merge, delete, state_index,
+        build_state, build_state_zero, icatalloc, icpyalloc, istrstr,
+        ifree, freelist, enlist, comsubs, addlists, inboth):
+        Remove forward decls; no longer needed.
+        * src/grep.c (ck_atoi, usage, error, setmatcher,
+        install_matcher, prepend_args, prepend_default_options,
+        page_alloc, reset, fillbuf, grepbuf, prtext, prpending, prline,
+        print_offset_sep, nlscan, grep, grepfile): Likewise.
+        * src/kwset.c (enqueue, treefails, treedelta, hasevery,
+        treenext, bmexec, cwexec): Likewise.
+        * src/search.c (Gcompile, Ecompile, EGexecute, Fcompile, Fexecute,
+        Pcompile, Pexecute, kwsinit): Likewise.
+
+        * src/search.c (Pcompile): Do not assume newly allocated
+        storage is zeroed.
+
+2000-04-06  Paul Eggert
+
+        * doc/grep.1, doc/grep.texi, NEWS: Improve the explanation of
+        locale-dependent behavior of range expressions.  Mention
+        LC_COLLATE, since this affects range expressions.
+
+2000-03-26  Paul Eggert
+
+        * Makefile.am (ACINCLUDE_INPUTS): Add decl.m4, inttypes_h.m4,
+        uintmax_t.m4, ulonglong.m4, xstrtoumax.m4.
+        * m4/Makefile.am (EXTRA_DIST): Likewise.
+
+        * src/Makefile.am (base_sources):
+        Add xstrtol.c, xstrtol.h, xstrtoumax.c.
+        (EXTRA_DIST): Add strtol.c.
+
+        * configure.in (jm_AC_TYPE_UINTMAX_T, jm_AC_PREREQ_XSTRTOUMAX,
+        HAVE_DECL_STRTOUL, HAVE_DECL_STRTOULL): Add.
+        (AC_REPLACE_FUNCS): Add strtoul.
+
+        * src/grep.c: Include xstrtol.h.
+        (ck_atio): Use xstrtoumax and do proper overflow checking.
+        (max_count, outleft): Now off_t, not int.
+        (main): Likewise. Use xstrtoumax to convert max_count from string.
+
+        * acconfig.h (HAVE_DECL_STRTOUL, HAVE_DECL_STRTOULL): New #undefs.
+        (HAVE_STPCPY, ENABLE_NLS, HAVE_CATGETS, HAVE_GETTEXT,
+        HAVE_LC_MESSAGES): Remove.
+
+        * m4/decl.m4, m4/inttypes_h.m4, m4/uintmax_t.m4, m4/ulonglong.m4,
+        m4/xstrtoumax.m4, src/strtol.c, src/strtoul.c, src/strtoull.c,
+        src/strtoumax.c, src/xstrtol.c, src/xstrtol.h, src/xstrtoumax.c:
+        New files, taken unchanged from textutils, fileutils, sh-utils
+        and/or tar.
+
+2000-03-23  Paul Eggert
+
+        * src/search.c (Pcompile): Add support for NUL bytes in
+        Perl regular expressions.
+
+2000-03-23  Paul Eggert
+
+        * NEWS, doc/grep.1, doc/grep.texi: Change --pcre to --perl-regexp.
+        * src/grep.c (long_options, usage): Likewise.
+
+        * doc/grep.1, doc/grep.texi: Remove pgrep program.
+        * src/Makefile.am (bin_PROGRAMS): Likewise.
+        (pgrep_SOURCES): Remove.
+
+        * src/grep.c (main): Rename matcher from "pgrep" to "perl".
+        * src/search.c (matchers): Likewise.
+
+        * src/search.c: Do not include stdio.h; no longer needed.
+        (NILP): Remove.
+        (sub): No longer static.
+        (n_pcre): Remove.
+        (cre): No longer an array.  Present only if HAVE_LIBPCRE.
+        (extra): New variable.
+        (Pcompile): Use fatal to report errors.
+        This also removes a possible core dump.
+        Add checks (marked FIXME) for restrictions in pcre.
+        Use pcre_maketables for proper localized behavior.
+        (Pcompile, Pexecute): Use GNU coding style.
+        The argument is a single pattern, not a list of patterns separated
+        by newlines; this is for consistency with grep and egrep.
+        Use pcre_study for speed.
+        (Pexecute): Abort if we lack pcre.
+        Abort if pcre_exec reports an impossible error.
+        Use code similar to the rest of search.c
+        to narrow down to the line we've found.
+
+2000-03-21  Alain Magloire
+
+        * configure.in: added AC_CHECK_LIB(pcre, pcre_exec)
+        * ChangeLog: Typos corrected.
+        * src/search.c: new MACRO HAVE_LIBPCRE
+
+2000-03-21  H.Merijn Brand
+
+        * src/Makefile.am(bin_PROGRAMS): added pgrep and new macro
+        pgrep_SOURCES.
+        * src/search.c: new functions Pcompile() and Pexecute()
+        to support PCRE.  Update matcher[] array for pgrep.
+        * src/grep.c: new short and long option --pcre and -P.
+        usage() updated.
+
+2000-03-21  Bastiaan Stougie
+
+        Improvement of the -m or --max-count option. Now works for NUM > 1 and
+        prints trailing context for the last matching line.
+
+        * src/grep.c
+        (after_last_match): Is a new off_t variable that replaces inputhwm
+        to retain the correct input offset even after a call to fillbuf. Note
+        that after_last_match has a different meaning than inputhwm:
+        it always points to the offset in the input of the first byte after
+        the last matching line, and is 0 if no matching line has been found
+        yet.
+        (grep): Print trailing context after the NUMth match when the -m NUM
+        option is used.
+        (grep): Added comment. Should have been commented already.
+        (grepbuf): Now updates outleft correctly. This fixes the bug that the
+        -m NUM option did not stop after NUM lines for NUM greater than 1.
+        (grepbuf, prtext): Now update after_last_match instead of inputhwm.
+        (fillbuf): No longer updates inputhwm.
+        (prpending): When outputting trailing context of the max_count-th
+        matching line, stop at the first matching line.
+        (grepfile): Seek to after_last_match or eof, depending on the values
+        of outleft and bufmapped.
+        (usage): added the -m or --max-count option to the help message.
+        * doc/grep.texi, doc/grep.1: Document the change of the -m option.
+
+2000-03-17  Paul Eggert
+
+        Add new -m or --max-count option, based on a suggestion by
+        Bastiaan Stougie.
+
+        * doc/grep.texi, doc/grep.1: Document it.
+        * src/grep.c (short_options, long_options, main): Add it.
+        (inputhwm): New variable.
+        (fillbuf, prtext, grepbuf): Set it.
+        (bufmapped): Now a macro (defined to zero) if HAVE_MMAP is not defined.
+        (max_count, outleft): New variables.
+        (prtext, grepbuf, grep): Don't output more than outleft lines.
+        (grepfile): If grepping standard input, seek to the limit of what
+        we've read before exiting.  This fixes a bug with mmapped input,
+        and is needed for proper -m support.
+        (main): Exit immediately if -m 0 is specified.
+
+2000-03-08  Alain Magloire
+
+        * configure.in: version 2.4.2
+
+2000-03-07  Paul Eggert
+
+        * Make intl subdirectory match fileutils, tar, etc.;
+        see intl/ChangeLog for details.
+
+        * src/getpagesize.h: Reformat to match latest fileutils.
+
+        * src/savedir.c (savedir): Work even if directory size is
+        negative; this can happen with some NFS screwups.
+
+2000-03-03  Jim Meyering
+
+        * regex.m4: Make sure re_compile_pattern accepts patterns like '{1'.
+
+2000-03-02  Alain Magloire
+
+        * 2.4.1 Release
+
+2000-02-25  Paul Eggert
+
+        * configure.in (LIBOBJS): Work around automake 1.4 bug:
+        regex.c wasn't being passed through ansi2knr on pre-ANSI hosts.
+        (ac_use_included_regex): Fix typo in warning.
+        * src/Makefile.am (EXTRA_DIST): Remove regex.c, as the LIBOBJS
+        workaround means that automake now puts regex.c into DIST_COMMON.
+
+2000-02-25  Alain Magloire
+
+        * po/*.po: update of the PO files.
+
+2000-02-22  Eli Zaretskii
+
+        * doc/grep.1:  Two small glitches(typos).
+
+2000-02-18  Eli Zaretskii
+
+        * djgpp/config.site (prefix, INSTALL): Use /dev/env/DJDIR instead
+        of ${DJDIR}, so that the produced Makefile's work on any DJGPP
+        installation.
+
+2000-01-30 Alain Magloire
+
+        * doc/grep.1:  corrected typo.
+        Noted by Ruslan Ermilov.
+
+2000-01-30 Alain Magloire
+
+        * vms/Makefile.am: added config_vms.h to EXTRA_DIST.
+        * vms/config_vms.h: New File, contains macros specific to VMS and
+        avoid namespace collision with operating system supplied C library.
+        * vms/make.com: Better compiler auto-detection; information for builds
+        on pre-OpenVMS 7.x systems; general overhaul.
+        * src/getpagesize.h: Reinstate support for different pagesizes on
+        VAX and Alpha. Work around problem with DEC C compiler.
+        * src/vms_fab.c: Cast to some assigments; fixed typo argcp vs. argp.
+        * src/vms_fab.h: Added new include files to avoid warnings about
+        undefined function prototypes.
+        Those patches were provided by Martin P.J. Zinser (zinser@decus.de).
+
+2000-01-30  Paul Eggert
+
+        * src/grep.c (main): Update copyright notice.
+
+2000-01-28  Alain Magloire
+
+        * src/grep.c (usage):  The example "%s -i 'hello.*world' could
+        lead to confusion when progname is 'fgrep.
+        Noted by Akim Demaille.
+
+        * configure.in: Reenable, jm_INCLUDE_REGEX() since we now
+        track GNU lib C.
+        * src/Makefile.am: EXTRA_DIST new macros with regex.c regex.h.
+        Requested By Ulrich Drepper.
+
+2000-01-25  Paul Eggert
+
+        * src/grep.c (grep): If the final byte of an input file is not
+        a newline, grep now silently supplies one.
+        * doc/grep.texi, NEWS: Likewise.
+
+2000-01-25  Paul Eggert
+
+        * NEWS, doc/grep.1, doc/grep.texi: Add -I option.
+        * src/grep.c (short_options, usage, main): Likewise.
+
+        * doc/grep.texi: Fix some incorrect references to ASCII.
+
+2000-01-25  Paul Eggert
+
+        * doc/grep.1: Simplify synopsis; sort options; mention
+        environment variables; clean up some minor gaffes.
+
+2000-01-25  Paul Eggert
+
+        * doc/grep.texi:
+        Fix some errors in description of [:print:] and the like.
+
+2000-01-23  Paul Eggert
+
+        * src/dfa.c (FETCH, lex): Put brackets around if-body to avoid
+        GCC warning about ambiguous if-then-else.
+
+2000-01-23  Paul Eggert
+
+        * src/regex.c (GET_UNSIGNED_NUMBER): Allow only ASCII digits.
+        * src/dfa.c (ISASCIIDIGIT): New macro.
+        (lex): Use it instead of ISDIGIT.
+
+2000-01-23  Paul Eggert
+
+        The bug is that regular expression ranges like [a-z] compare raw
+        byte codes to the range boundaries, whereas POSIX says that they
+        should use the current collating sequence instead.  For example,
+        in Solaris 7 with LC_ALL=en_US, the command
+        echo x | grep '[ -~]'
+        outputs 'x', but it shouldn't output anything since ' ' and '~'
+        sort before all letters in that locale.
+
+        * src/regex.c (compile_range): When matching a character
+        range, use the current collating sequence, as POSIX requires.
+        * src/dfa.c (lex): Likewise.
+
+2000-01-20  Alain Magloire
+
+        * tests/Makefile.am (dist-hook): Added new rule to make sure
+        that the shell scripts have the right permissions.
+        * src/posix/Makefile.am (EXTRA_DIST): added regex.h in the
+        distribution.
+        * THANKS: updated.
+
+2000-01-18  Alain Magloire
+
+        * Rectification the initial patch to add --binary-file option
+        was done by Ruslan Ermilov.
+
+2000-01-17  Paul Eggert
+
+        Sync with sources of fileutils 4.0n, tar 1.13.17, glibc 2.1.3a1.
+        Convert to ANSI C prototypes (using ansi2knr for backwards
+        compatibility), as this makes it easier to sync.
+
+        * configure.in (AC_OBJEXT): Spell in a funny way, to work around
+        a bug in automake 1.4 with ansi2knr.
+        (LIBOBJS): Add assignment so that .o files in LIBOBJS are also built
+        via the ANSI2KNR-filtering rules.
+        (AC_OUTPUT): Add src/posix/Makefile.
+        * src/Makefile.am (AUTOMAKE_OPTIONS): Add ansi2knr.
+        (SUBDIRS): New macro.
+        * src/ansi2knr.1, src/ansi2knr.c, src/posix/Makefile.am: New files.
+        * src/dfa.c, src/dosbuf.c, src/grep.c, src/kwset.c, src/search.c,
+        src/vms_fab.c:
+        Use prototypes for function definitions.
+        * src/grep.c (main): Use int counter for default context,
+        fixing an ANSI portability bug uncovered by the above changes.
+
+        * config.guess, config.sub, install-sh, missing, src/alloca.c,
+        src/getpagesize.h, src/memchr.c, src/savedir.c, src/savedir.h,
+        src/stpcpy.c:
+        Upgrade to latest version from fileutils 4.0n.
+
+        * src/getopt.c, src/getopt.h, src/getopt1.c: Upgrade to latest
+        version from tar 1.13.17.
+
+        * src/obstack.c, src/obstack.h, src/regex.c, src/regex.h:
+        Upgrade to glibc 2.1.3 alpha 1, with K&R C portability fix.
+        * src/posix/regex.h: New file, from glibc 2.1.3 alpha 1.
+
+2000-01-04  Paul Eggert
+
+        Initial patch by Ruslan Ermilov.
+
+        Add --binary-files option.
+        * NEWS, doc/grep.1, doc/grep.texi: Document it.
+        * src/grep.c (BINARY_FILES_OPTION): New constant.
+        (long_options, grep, usage, main): New --binary-files option.
+        (binary_files): New var.
+        * src/system.h (TYPE_SIGNED, TYPE_MINIMUM, TYPE_MAXIMUM, CHAR_MAX):
+        New macros.
+        (INT_MAX, UCHAR_MAX): Define in terms of TYPE_MAXIMUM.
+
+2000-01-04  Paul Eggert
+
+        * savedir.c (savedir): Don't store past the end of an array if
+        name_size is zero and the directory is empty.
+        Reported by Dima Barsky <dima@pwd.hp.com>.
+
+1999-12-03  Alain Magloire
+
+        * 2.4 Release.
+
+1999-11-18  Paul Eggert
+
+        * m4/largefile.m4 (AC_SYS_LARGEFILE_FLAGS): Work around a
+        problem with the QNX 4.25 shell, which doesn't propagate exit
+        status of failed commands inside shell assignments.
+
+1999-11-13  Eli Zaretskii
+
+        * doc/grep.texi: Minor markup and spelling corrections.  Use
+        @noindent where appropriate.
+
+        * PATCHES-{AM,AC}: rename to PATCHES.{AM,AC}
+
+1999-11-12  Eli Zaretskii
+
+        doc/grep.texi: Minor fixes and typos corrected.
+        djgpp/README: Updated version.
+
+1999-11-07  Paul Eggert
+
+        * src/grep.c (usage): Fix misspelling.
+
+1999-11-07  Paul Eggert
+
+        Don't assume that the C library has re_set_syntax and friends.
+        * src/Makefile.am (base_sources): Add regex.c, regex.h.
+        (EXTRA_DIST): Remove regex.c, regex.h.
+
+        * src/grep.c (prtext): Use out_quiet, not not_text, to decide
+        whether to set pending to zero at the end.
+        (not_text): Remove static variable, undoing latest change.
+        (grep): Likewise.
+
+        * doc/grep.texi: Tighten up the text, and fix some minor
+        spelling and usage errors.  Use @enumerate rather than @table
+        @samp, since it's better for Q&A format.  Add cross
+        references.
+
+1999-11-01 Alain Magloire
+
+        * src/search.c: Use the more portable [[:alnum:]]
+        to define a word instead of Ascii dependent [0-9A-Za-z]
+        * src/grep.c: make not_text global to not display text when
+        the context switches -A/-B/-C are use on binary files.
+        * make grep-2.3g available for testing.
+        * configure.in: drop support for --without-included-regex.
+        This was generating bogus bug reports, since many GNU/Linux
+        users have different version of glibc.  And glibc maintainers
+        decided to drop k&r support.
+
+1999-11-01 Arnold D. Robbins
+
+        * regex.c (init_syntax_once): move below definition of
+        ISALNUM etc., then use ISALNUM to init the table, so that
+        the word ops will work if i18n'ed.
+        (SYNTAX): And subscript with 0xFF for Latin-1 characters.
+
+1999-10-26  Alain Magloire
+
+        * src/regex.c: Merge changes from GNU lib C.
+        * Updated the *.po files
+
+1999-10-26  Paul Eggert
+
+        * src/grep.c (fillbuf): Don't report buffer size overflow if
+        newalloc == save and maxalloc == save.  This can happen
+        e.g. when reading a large page-aligned file that contains
+        no newlines.
+
+1999-10-21  Paul Eggert
+
+        * src/grep.c (usage): Give example.  Clarify -F.
+        Explain exit status more clearly.
+
+1999-10-12  Paul Eggert
+
+        * doc/grep.texi: Shorten the commentary about egrep and {.
+        "BSD grep" -> "traditional grep".
+        * doc/grep.1: Match recent changes to grep.texi.
+
+1999-10-11  Paul Eggert
+
+        * NEWS, doc/grep.1, doc/grep.texi: New option --mmap.
+        * src/grep.c (mmap_option): New variable.
+        (long_options, reset, usage): Add --mmap.
+        Default is now read, not mmap.
+
+        * doc/grep.1: Document -Z or --null.
+
+1999-10-11  Paul Eggert
+
+        * doc/grep.texi: Fix texinfo glitches.  POSIX -> POSIX where
+        appropriate.
+
+1999-10-11  Paul Eggert
+
+        * acconfig.h (ssize_t): New #undef.
+
+        * configure.in (AC_CHECK_TYPE): Add ssize_t.
+
+        * src/grep.c (PREFERRED_SAVE_FACTOR): New macro.
+        (reset): If the buffer has already been allocated, set bufsalloc to
+        be bufalloc / PREFERRED_SAVE_FACTOR.  This avoids problems when
+        bufsalloc == bufalloc (possible after reading a large binary file).
+        (reset): Use PREFERRED_SAVE_FACTOR instead of magic constant.
+        Do not set bufbeg; nobody uses it.
+        Always set buflim.
+        Check for lseek error.
+        Use SEEK_CUR, not a magic constant.
+        (fillbuf): Return an error indication, not a count.
+        All callers changed.
+        Do not assume ssize_t fits in int.
+        Use PREFERRED_SAVE_FACTOR instead of magic constant.
+        Clean up mmap code.
+        Do not attempt to mmap zero bytes.
+        Check for lseek error.
+        Use SEEK_SET, not a magic constant.
+        Work correctly if read is interrupted.
+        (grepfile): Work correctly if open or close is interrupted.
+
+        * src/system.h (SEEK_SET, SEEK_CUR): New macros.
+
+1999-10-02 Alain Magloire
+
+        * src/regex.[ch]: upgrade from GNU lib C source tree.
+
+        * make beta 2.3f available.
+
+1999-10-02  Paul Eggert
+
+        * NEWS: egrep is now equivalent to 'grep -E'.
+        The lower bound of an interval is not optional.
+        You can specify a matcher multiple types without error.
+        -u and -U are now allowed on non-DOS hosts, and have no effect.
+        * doc/grep.texi: Likewise.
+        * doc/grep.1: Likewise.
+        Fix some troff bugs that prevented 'groff' from rendering the page.
+
+        * src/egrepmat.c, src/fgrepmat.c, src/grepmat.c (default_matcher):
+        Remove.
+        (matcher): Add.
+        * src/grep.h (default_matcher): Remove.
+        (matcher): Now exported from ?grepmat.c, not grep.c.
+
+        * src/dfa.c (lex): If { would start an invalid interval specification,
+        treat it as a normal character.
+        Remove (broken) support for {,M} meaning {0,M}.
+        Diagnose bogus intervals like {1,0}.
+        (closure): maxrep is now -1 to indicate no limit, not zero;
+        zero is a valid value for maxrep, meaning an upper bound of zero.
+
+        * src/grep.c (short_options): New constant.
+        (long_options, main): -u and -U are now supported on Unix,
+        with no effect.
+        (matcher): Removed; now defined by ?grepmat.c.
+        (install_matcher): Renamed from setmatcher.
+        (setmatcher): New function.
+        (usage): Report new, more uniform option scheme.
+        (main): Do not initialize matcher; ?grepmat.c now does this.
+        Rely on setmatcher to catch matcher conflicts.
+        Default matcher is "grep".
+
+        * src/search.c (matchers):
+        Remove "posix-egrep" matcher; no longer needed.
+        (Ecompile): Likewise.
+        The egrep matcher now has POSIX behavior.
+
+        * tests/bre.tests: grep '\{' is no longer an error.
+        Fix test for interval too large, and enable it.
+        * tests/ere.tests: grep -E {1 is no longer an error
+        Likewise for a{1, a{1a, a{1a}, a{1,x}.
+
+1999-09-22  Paul Eggert
+
+        * largefile.m4 (AC_SYS_LARGEFILE_FLAGS): Work around GCC
+        2.95.1 bug with HP-UX 10.20.
+
+1999-09-12  Paul Eggert
+
+        * src/grep.c (fillbuf): Fix typo: we sometimes reported
+        arithmetic overflow even when there wasn't any.
+
+1999-09-12  Paul Eggert
+
+        * configure.in (AC_CHECK_FUNCS): Add memmove.
+
+        * src/system.h (S_ISREG): New macro.
+        (memmove): Define if ! defined HAVE_MEMMOVE && ! defined memmove,
+        not if !defined STDC_HEADERS.  This is needed for SunOS 4.1.4,
+        which defines STDC_HEADERS but lacks memmove.
+
+        * src/grep.c (bufoffset): Needed even if !defined HAVE_MMAP.
+        (reset): Always fstat the file, since we always need its size if it is
+        regular.
+        Similarly, get the buffer offset of every regular file.
+        Set bufmapped to 0 if the file's initial offset is not a multiple
+        of the page size.
+        (fillbuf): Calculate an upper bound on how much memory we should
+        allocate only for regular files, since we don't know the sizes of
+        other files.
+        Don't bother to check whether the file offset is a multiple of the page
+        size, since we now do that just once in 'reset'.
+        When an mmapped area would fall past the end of the file, trim it to
+        just before instead of giving up immediately and doing a 'read';
+        that avoids a worst-case behavior that could read half an mmapped file.
+        Fix bug when computing offsets on hosts that don't have mmap.
+
+1999-08-27  Paul Eggert
+
+        * src/system.h (memmove): New macro.
+
+        * src/grep.c (page_alloc): Reallocate the old buffer instead
+        of having both old and new buffers active simultaneously.
+        Remove valloc debugging variant, which no longer applies.
+
+        (fillbuf): Rejigger the buffer allocation mechanism.  The old
+        mechanism could allocate more than 10*N bytes for an N-byte
+        file, which was excessive.  Check for arithmetic overflow a
+        bit more carefully.
+
+1999-08-25  Paul Eggert
+
+        * src/grep.c (grepdir):
+        Don't assume that st_ino and st_dev must be integers;
+        POSIX allows them to be floating-point (!).
+
+        * src/vms_fab.h (arr_ptr): ':' -> ';' to fix typo.
+
+1999-08-18  Alain Magloire
+
+        * 2.3e snapshot.
+
+1999-08-18  Alain Magloire
+
+        * src/search.c: On a CRAY J90 system running UNICOS 8.0.
+        Compilation of ./src/search.c failed because the declaration of
+        the variable "regex":
+          static struct re_pattern_buffer regex;
+        conflicted with a previous declaration search.c #includes "system.h",
+        which #includes <stdlib.h>, which declares :
+        extern char *regex __((char *_Re, char *_Subject, ...));
+        The declaration in search.c is local to that one source file.
+        I just changed its name to something less likely to conflict.
+        (I called it "regexbuf", but you could pick any name you want.)
+        Excerpt email from Dean Kopesky.
+
+1999-08-16  Paul Eggert
+
+        Upgrade large-file support to the version used in tar and
+        textutils.
+
+        * Makefile.am (ACLOCAL_AMFLAGS): Define to be empty.
+        (M4DIR, ACINCLUDE_INPUTS): New macros.
+        ($(srcdir)/acinclude.m4): New rule.
+
+        * configure.in (AC_CANONICAL_HOST, AM_C_PROTOTYPES): Add.
+        (AC_SYS_LARGEFILE): Renamed from AC_LFS, for compatibility
+        with what should appear in the next autoconf release.
+
+        * m4/largefile.m4: Renamed from m4/lfs.m4.
+
+        * src/ansi2knr.1, src/ansi2knr.c, config.guess, config.sub:
+        New files.  config.guess and config.sub ar needed by the new
+        AC_SYS_LARGEFILE.  ansi2knr is needed by AM_C_PROTOTYPES,
+        which in turn is needed by the new AC_SYS_LARGEFILE.
+
+1999-08-16  Alain Magloire
+
+        * 2.3d snapshot on ftp server.
+
+1999-07-26  Paul Eggert
+
+	Several GNU tools have options to process arbitrary file names, even
+	file names that contain newline characters.  These include 'find
+	-print0', 'perl -0', 'sort -z', and 'xargs -0'.  It'd be handy if GNU
+	grep also processed such file names.  Here's a proposed patch to do
+	this, relative to grep 2.3c.  This patch introduces two options, one
+	for the data, and one for the file names.  (Sometimes one wants
+	null-terminated file names in the output, and sometimes one wants to
+	process lists of null-terminated strings, and these are orthogonal
+	axes.)
+
+        * NEWS, doc/grep.texi: New -z or --null-data and -Z or --null options.
+        * src/grep.c (long_options, usage, main): Likewise.
+
+        * src/dfa.h (dfasyntax): New eol parameter.
+        * src/dfa.c (eolbyte): New var.
+        (dfasyntax): Set it from new parameter.
+        (lex, dfastat, build_state, dfaexec): Use it instead of '\n'.
+
+        * src/grep.h (eolbyte): New decl.
+        * src/grep.c (eolbyte): New var.
+        (nlscan, prpending, prtext, grepbuf, grep): Use it instead of '\n'.
+        (filename_mask): New var.
+        (prline, grepfile): Output NUL separator if filename_mask is zero.
+        (grep): Look for '\200' as the hallmark of a binary file, not '\0',
+        if -z or --null-data is specified, since it implies that '\0' is
+        expected as text.
+
+        * src/search.c (Gcompile, Ecompile): Pass eolbyte to dfasyntax.
+        (EGexecute, Fexecute): Use eolbyte instead of '\n'.
+
+1999-06-15 Alain Magloire
+
+        * src/grep.c, doc/grep{1,texi} :
+        --revert-match should be --invert-match.
+        Correction proposed by Karl Berry.
+
+1999-06-12 Alain Magloire
+
+        * doc/grep.{1,texi}: add description for --with-filename.
+        Noted missing by UEBAYASHI Masao.
+
+1999-03-17 Paul Eggert
+
+        * NEWS: Add GREP_OPTIONS.
+
+        * doc/grep.texi: Document GREP_OPTIONS, and the other
+        environment variables.  Fix doc for [:blank:], [:cntrl:], [:punct:].
+
+        * src/grep.c (prepend_args, prepend_default_options): New functions.
+        (main): Use them to implement GREP_OPTIONS.
+        * src/system.h (getenv): New decl.
+
+1999-03-16 Volker Borchert
+
+        * configure.in: Use case case ... esac for  checking Visual C++.
+        When ${CC} contains options it was not recognize.
+
+1999-03-07 Paul Eggert
+
+        * src/grep.c (usage): Don't report -E, -F, and -G unless we're grep.
+        (main): Don't match options -E, -F, and -G unless we're grep.
+        Remove after-the-fact check for options -E, -F, and -G, since
+        they're no longer needed.
+
+1999-03-05  Eli Zaretskii
+
+        * src/grep.c (main): Print the name of the default matcher instead
+        of just "grep".
+
+1999-02-06 Alain Magloire
+
+        * tests/*.awk : Linux users are seeing "Broken Pipe" on make check.
+        The problem is that grep does not drain its stdin, thus the previous
+        process in the pipeline receives a SIGPIPE.  Other shells are silent
+        about this.  There is actually no failure, since the broken pipe is
+        expected.  You can work around it by changing the pipeline, so that
+        the input is drained, like this:
+        status=`echo 'check' | { ${GREP} -E -e pattern >/dev/null 2>&1;
+        echo $?; cat >/dev/null; }`; if test $status -ne $errnu then ... fi
+        Excerpt email from Andreas Schwab.
+
+1999-02-23 Alain Magloire
+
+        * src/grep.c : Restrict the use of -E, -F, -G
+        to only grep driver, Posix behaviour. {f,e}grep
+        the matcher is already set. This change may brake
+        scripts, warn in NEWS.
+
+        * doc/grep.{1,texi} : -C takes arguments, upgrade manual.
+
+        * beta 2.3a
+
+1999-02-23 Alain Magloire
+
+        * configure.in : Change the configure VC test from
+        'test x$ac_cv_prog_CC = xcl;' to 'test x"$ac_cv_prog_CC" = xcl;'
+        Email from Joshua R. Poulson.
+
+1999-02-23 Paul Eggert
+
+        Fix porting bug reported by Amakawa Shuhei for SunOS 4.1.4-JL.
+        The btowc.c shipped with grep 2.3 is incorrect for Solaris
+        2.5.1 and earlier, as it assumes UTF8, which these OSes do not
+        support.  Solaris 7 supports btowc, so there's no need to ship
+        a substitute for it.  The only questionable case is Solaris
+        2.6, which lacks btowc but does support UTF8.  However, 2.6
+        supports UTF8 but only as a demonstration (for an English
+        locale!); Japanese Solaris 2.6 users typically use EUC, or
+        sometimes shift-JIS, but they cannot use UTF8 since Japanese
+        UTF8 is not supported.  Hence there's no point to having grep
+        substitute a btowc that uses UTF8, as it is either redundant,
+        or it will almost invariably have incorrect behavior.
+
+        * configure.in (AC_CHECK_HEADERS): Don't set USE_WCHAR.
+        (AC_CHECK_FUNCS): Add btowc, wctype.
+        (AC_REPLACE_FUNCS): Don't replace btowc; our replacement is
+        invariably doing the wrong thing anyway, at least on SunOS/Solaris.
+        Don't bother to check for wctype in -lw, as we don't support
+        wide characters on Solaris 2.5.1 or earlier anyway.
+
+        * bootstrap/Makefile.try (OBJS): Remove btowc.$(OBJEXT).
+
+        * src/btowc.c: Removed; no longer needed.
+
+1999-02-19  Paul Eggert
+
+        * NEWS: Fix typo when talking about the old behavior of
+        silently skipping directories; it was grep 2.1, not grep 2.2.
+
+1999-02-15 Alain Magloire
+
+        * bootstrap/Makefile.try : add DJGPP DEFS.
+        Done by Elie Zaretsckii.
+
+1999-02-14 Alain Magloire
+
+        * m4/gettext.m4 : Guard [] with changequote.
+        From Elie Zaretskii.
+
+        * djgpp/config.bat : Makefile.in.in --> Makefile.in-in
+        From Elie Zaretskii.
+
+        * src/dosbuf: k&r function parameter.
+
+        * release of 2.3.
+
+1999-02-10 Alain Magloire
+
+        * bootstrap/{Makefile{try,am},REAMDE} : skeleton
+        provided for system lacking the tools to autoconfigure.
+
+        * src/{e,f,}grepmat.c: added guard [HAVE_CONFIG_H]
+
+1999-02-10 Alain Magloire
+
+        * PATCHES-AC, PATCHES-AM: updated.
+
+        * m4/regex.m4 : updated.
+
+1999-02-05 Eli Zaretskii
+
+        * m4/gettext.m4 : Support DOS-style D:/foo/bar absolute file
+        names.
+
+        * aclocal.m4 (DJGPP) : Use $DJ_GPP instead, since changing the
+        latter prevents GCC from finding headers and libraries.
+
+        * djgpp/config.bat: Make building from another directory work
+
+        * djgpp/config.sed: Remove redundant command that edited path
+        separator: now done by configure.
+
+        * src/grep.c [O_BINARY]: Add prototype for undossify_input.
+
+        * doc/grep.texi (Introduction): Typo fixed.
+
+1999-02-03 Alain Magloire
+
+        * grep-2.2f beta release.
+
+1999-02-02 Alain Magloire
+
+        * m4/{djgpp,envsep,glibc,regex,dosfile,isc-posix}.m4 :
+        New files to aid configuration and unload configure.in.
+        * m4/Makefile.am : updated.
+        * src/btowc.c : protect for wchar.h
+
+1999-01-28 Alain Magloire
+
+        * intl/Makefile.in: Replace .o with .${ac_objext} where necessary.
+        Work around a limitation of Visual C++ on Cygwin32.
+        * acconfig.h configure.in: Define 'alloca' as '_alloca' when CC=cl.
+        This little hack was suggested by Ian Roxborough <irox@cygnus.com>.
+        Patch forwarded by Ben Elliston.
+
+1999-01-28 Alain Magloire
+
+        * PATCHES-AM: New file. A small patch for automake-1.4, use $(sep)
+        as the path separator base on @SEP@.
+        * PATCHES-AC configure.in : updated for autoconf-13.
+
+1999-01-27 Volker Borchert
+
+        * grep.c: fgrep -NUM not working correctly.
+        add the argument number to digit_args_val.
+
+1999-01-22 Paul Eggert
+
+        Prevent grep -r from recursing infinitely through directory loops via
+        symbolic links.
+
+        * grep.c (struct stats): New type.
+        (stats_base): New var.
+        (bufstat): Remove; subsumed by stats->stat.
+        (reset, fillbuf, grep, grepdir, grepfile): Pass struct stats * arg,
+        for directory loop checking; use this instead of the bufstat global.
+        All callers changed.
+        (grepfile): Stat the file before invoking grepdir.
+        (grepdir): Assume that the argument has already been statted.
+        No longer a need for a directory size argument, since it
+        can be gotten from the struct stats * argument.
+        Check for directory loops.
+        Create linked list of directories currently being visited,
+        to detect loops.
+
+1998-12-29 Kaveh R. Ghazi
+
+        intl/localealias.c: When building grep-2.2e using cc on Irix4,
+        I needed the following patch to intl/localealias.c.
+        (Its the same patch used by fileutils-4.0.) The patch resolves
+        conflicts between char* and unsigned char* in the i18n code.
+
+1998-12-10 Alain Magloire
+
+        * src/grep.c : Typo in contex -->context
+        Noted by  Vladimir Michl.
+
+1998-12-01  Alain Magloire
+
+        * doc/Makefile.am djgpp/Makefile.am m4/Makefile.am vms/Makefile.am:
+        New files.
+
+        * m4/progtest.m4: proctect '[]' from m4.
+        Noted by Eli Z.
+
+        * PATCHES-AC: New file, add the patch for autoconf in the dist.
+
+        * acconfig.h: (HAVE_DOS_FILENAME)
+
+        * TODO: updated.
+
+        * src/search.c: remove obsolete 'gegrep,ggrep,gnugrep'
+        matchers. grep no longer depend on argv[0].
+
+        * grep-2.2e beta to test DJGPP port.
+
+1998-11-28  Paul Eggert
+
+        Various portability enhancements:
+        - Don't assume that O_BINARY implies DOS.  Use separate
+        macros D_OK (for DOS-like directory access) and
+        HAVE_DOS_FILE_NAMES (for DOS-like file names).
+        - Don't assume that off_t fits into long; it doesn't on Solaris 2.6.
+        - Have is_EISDIR set errno properly on hosts with screwed-up EISDIR.
+        - Treat ':' specially in DOS file names only if it's the end of a
+        drive specifier.
+        - Protect against errno < 0.
+
+        * src/grep.c (is_EISDIR): Move defn to system.h.
+        (print_offset_sep): New function.
+        (fillbuf): Remove redundant test of O_BINARY.
+        (totalcc, totalnl): Now of type off_t.
+        (prline): Use print_offset_sep to print file offsets.
+        (grepfile): Don't set e to EISDIR; that's is_EISDIR's responsibility
+        on machines that don't work properly with EISDIR.
+        (grepdir): Don't assume ':' means slash on all DOS filenames;
+        it means it only in the file prefix.
+
+        * src/system.h (strerror): Check for negative error numbers.
+        (is_EISDIR): Depend on D_OK, not O_BINARY.
+        (SET_BINARY): Depend on HAVE_SETMODE, not __DJGPP__.
+        (IS_SLASH, FILESYSTEM_PREFIX_LEN): Depend on HAVE_DOS_FILE_NAMES,
+        not O_BINARY.
+        (CHAR_BIT): New macro.
+
+        * src/dosbuf.c (struct dos_map):
+        pos and add members are now of type off_t.
+        (dos_stripped_crs): Now of type off_t.
+        (dossified_pos): Now accepts arg and returns value of type off_t.
+
+        * configure.in (AC_CHECK_FUNCS): Add setmode.
+        (HAVE_DOS_FILENAMES): New macro
+
+1998-11-27  Eli Zaretskii
+
+        * djgpp/config.sed: New file, a Sed script to edit configure
+        script before running it on DOS/Windows.
+        * djgpp/config.bat: Updated to handle po2tbl.sed.in and
+        po/Makefile.in.in on DOS filesystems, and to run config.sed.
+
+1998-11-24  Jim Meyering
+
+        * src/grep.c : Typo s/infalid/invalid/
+        Also noted by Stanislav Brabec.
+
+1998-11-24  Eli Zaretskii
+
+        * doc/grep.texi: I found and corrected several typos.
+        I believe the GNU standards require the section that describes the
+        options to the programs to be called "Invoking" or "Invoking
+        <program-name>".  This is so users and programs can easily find
+        that node in any Info file.  So I changed the name of the
+        "Options" chapter to "Invoking", and corrected the
+        cross-references accordingly.
+        I added some markup to things like file names and options.
+        I added some additional index entries where that seemed useful.
+        I also corrected some index entries, such as "@cindex [:alnum:]",
+        which used a colon in them (the colons confuse Info readers).
+
+1998-11-24  Alain Magloire
+
+        * grep/doc/grep.texi : -h is not use for help.
+        Nit spotted by Jim Meyering.
+
+1998-11-23  Alain Magloire
+
+        * doc: New directory, grep.1, {e,f}grep.man move here
+        * doc/grep.texi: New info manual
+        * doc/version.texi: New
+        * doc/Makefile.am: New
+        * tests/{ere,bre}.*: New files. The spencer2 test is split
+        in two ere/bre.
+        * config.hin: New, config.h.in rename to config.hin for OS
+        with limited file system aka DOS.
+
+        * grep-2.2d release for beta.
+
+1998-11-18  Alain Magloire
+
+        * src/regex.[ch] : Updated from GLibc, previous patches were
+        integrate by Ulrich Drepper and some added ones.
+
+1998-11-16  Paul Eggert
+
+        * grep.h (__attribute__): New macro, if not GCC.
+        (fatal): Add __attribute__((noreturn)).
+        * grep.c (usage): Add __attribute__((noreturn)).
+
+1998-11-16  Paul Eggert
+
+        Remove memory leak with valloced buffers, by invoking malloc instead.
+
+        * configure.in (AC_CHECK_FUNCS), src/system.h (valloc): Remove.
+        * src/grep.c (page_alloc): New function.
+        (ubuffer, pagesize): New vars.
+        (ALIGN_TO): New macro.
+        (reset): Initialize new vars.  Check for overflow in buffer size calc.
+        Use page_alloc instead of valloc.
+        (fillbuf): Likewise.  Use memcpy to copy saved area.
+
+1998-11-15  Paul Eggert
+
+        * dfa.c (dfacomp), search.c (EGexecute): Don't assume char is unsigned.
+
+1998-11-14  Paul Eggert
+
+        * src/grep.c (grepdir): Fix bug: memory freed twice.
+
+        * src/search.c (Gcompile, Ecompile): Don't invoke dfainit,
+        since dfacomp does it for us, and if we also do it then we
+        leak memory.
+
+1998-11-13  Eli Zaretskii
+
+        * djgpp/config.bat: Rewrite to run the configure script via Bash.
+        * djgpp/config.site, djgpp/getconf: New files.
+        * djgpp/config.h, djgpp/*.mak, djgpp/po2tbl.sed: Remove.
+        * djgpp/README: Update instructions.
+
+        * Makefile.am (EXTRA_DIST): Update the list of DJGPP files.
+
+        * src/system.h (IS_SLASH): New macro.
+        (is_EISDIR): Define it here for DOS and Windows.
+
+        * src/grep.c (main) [O_BINARY]: Set stdout to binary mode, so the
+        EOL formats of the input and output files match, unless stdout is
+        the console device.
+        (is_EISDIR): Don't define if already defined.  Accept a second
+        argument, the file name; all callers changed.
+        (grepdir): Don't free 'file', inside the loop.  Use IS_SLASH to
+        check whether 'dir' needs a slash.
+        (grepfile): If file is a directory, set e to EISDIR.
+
+1998-11-10  Alain Magloire
+
+        * src/vms_fab.{c,h}: New file for VMS wildcard expansion
+        Written by Phillip C. Brisco.
+
+        * vms/make.com : add line to compile vms_fab.c and
+        {e,f,}grepmat.c with link for each grep/fgrep/egrep.
+        Base on patch send by Phillib C. Brisco.
+
+1998-11-09  Alain Magloire
+
+        * grep-2.2c on alpha for testing.
+
+1998-11-09  Paul Eggert
+
+        * src/grep.1: Fix "Last Change" of output by generating the date
+        from the RCS Id.
+
+        * src/grep.c (is_EISDIR): New macro.
+        (grep): If -s, suppress errors from trying to read directories.
+        (grepfile): Use is_EISDIR to simplify code.
+        (grepdir): If -s, suppress errors from trying to read directories.
+
+        * src/grep.1: Fix -q -r -s problems; describe BSD grep better.
+
+        * src/grep.c (main): Update copyright.
+
+        Specify default matcher with default_matcher extern var, not
+        DEFAULT_MATCHER macro.  This is more straightforward and means
+        we need to compile grep.c just once.
+
+        * src/egrepmat.c, src/fgrepmat.c, src/grepmat.c: New files.
+
+        * src/Makefile.am (base_sources): New macro.
+        (egrep_SOURCES, fgrep_SOURCES, grep_SOURCES): Now consist of
+        $(base_sources) plus the single tailoring file.
+        (grep_LDADD, egrep_LDADD, fgrep_LDADD): Remove.
+        (EXTRA_DIST): Remove grep.c, regex.c.
+        (fgrep.o, egrep.o): Remove.
+
+        * src/grep.h (matcher): Now char const *.
+        (default_matcher): New decl.
+
+        * src/grep.c (matcher): Now char const *.
+        (setmatcher): Now accepts char const *.
+        (main): Default the matcher from default_matcher (linked externally)
+        rather than DEFAULT_MATCHER (a macro).
+
+1998-11-08 Alain Magloire
+
+        * src/grep.1: 'prep.ai.mit.edu' should be replaced with 'gnu.org'.
+        Nit from Paul Eggert.
+
+1998-11-06 Alain Magloire
+
+        * src/grep.c: The Matcher is not set to argv[0] but
+        explicitly by a #define MATCHER at compile time default is "grep".
+
+        * aclocal/: NEW dir. provides our own *.m4
+
+        * configure.in: Move Paul's Large Files to AC_LFS.(aclocal/lfs.m4)
+        Taken from Jim Meyering fileutils.
+
+1998-11-05 Alain Magloire
+
+        * src/grep.1: update the man pages according to the
+        changes make by Miles.
+
+        * po/*.po: updated.
+
+        * first beta release for 2.3 (2.2a).
+
+1998-11-04 Miles Bader
+
+        * src/grep.c (main): Rationalize interaction of -C/-NUM/-A/-B
+        options, and allow -C to have an optional argument. -NUM can
+        now be mixed with -C, and -A, -B always take precedence over
+        -C/-NUM, regardless of order.
+        (long_options): Let -C/--context take an optional argument.
+
+1998-11-03 Alain Magloire
+
+        * src/dfa.c: HP-UX define clrbit/setbit as macros in <sys/param.h>
+        #undef if defined.
+        Fixed by Andreas Ley and Philippe Defert.
+
+        * src/grep.1 : mention that -s follows POSIX behavior.
+        Noted by Paul Eggert and others.
+
+        * tests/khadafy.sh: a typo in failure(s).
+        Spotted By Sotiris Vassilopoulos.
+
+1998-11-01  Paul Eggert
+
+        * src/system.h (IN_CTYPE_DOMAIN): New macro.
+        (ISALPHA, ISUPPER, ISLOWER, ISDIGIT, ISXDIGIT, ISSPACE,
+        ISPUNCT, ISALNUM, ISPRINT, ISGRAPH, ISCNTRL): Use
+        IN_CTYPE_DOMAIN instead of isascii.
+
+1998-08-18  Paul Eggert
+
+        Add support for new -r or --recursive (or -d recurse or
+        --directories=recurse) option.
+
+        * src/Makefile.am (grep_SOURCES): Add savedir.c, savedir.h, stpcpy.c.
+
+        * src/grep.1: Describe new options.
+
+        * src/grep.c: Include "savedir.h".
+        (long_options): Add -r or --recursive.
+        (RECURSE_DIRECTORIES): New enum value.
+        (IS_DIRECTORY_ERRNO): Remove.
+        (reset, grep): Add file name arg.
+        (grepdir, grepfile): New functions.
+        (initial_bufoffset): New var.
+        (reset): Initialize it.
+        (fillbuf): Use it.
+        (count_matches, list_files, no_filenames, suppress_errors): New static
+        vars; formerly were local to 'main'.
+        (grep): Recurse through directories if the user asks for this.
+        (usage, main): Add new options.
+        (main): Change some local vars to be static, as described above.
+        Move most of the guts into grepfile function.
+        so that it can be recursed through.
+
+        * configure.in (AC_HEADER_DIRENT, AC_FUNC_CLOSEDIR_VOID): Add.
+        (AC_REPLACE_FUNCS): Add stpcpy.
+
+        * src/savedir.c, src/savedir.h, src/stpcpy.c: New files;
+        taken from fileutils 3.16u.
+
+1998-08-11  Paul Eggert
+
+        * src/system.h (initialize_main): New macro.
+        * src/grep.c (main): Invoke initialize_main first thing.
+
+1998-04-29  Paul Eggert
+
+        * NEWS, src/grep.1: Describe new -a and -d options.
+
+        * src/grep.c (long_options, usage, main):
+        New options -d or --directories and -a or --text.
+        (directories, always_text): New variables.
+        (IS_DIRECTORY_ERRNO): New macro.
+        (reset): Now returns value specifying whether to skip this file.
+        Stat the file if either mmap or directory-skipping is possible.
+        Skip the file if it's a directory and we're skipping directories.
+        (grep): Skip the file if 'reset' tells us to.
+        (main): If open fails because the file is a directory, and if we're
+        skipping directories, don't report an error.
+        Remove special case for DOS and Windows.
+
+        * src/dosbuf.c (guess_type): Use the same method for guessing whether a
+        file is binary as grep.c's grep does.
+        There's no longer any need to declare 'bp' to be unsigned.
+
+1998-04-26 Alain Magloire
+
+        * grep-2.2 release.
+
+        * src/dfa.c: Wrong revision was pulled out
+        for beta 2.1.1d.
+        * src/search.c: Wrong revision was pulled out
+        for beta 2.1.1d.
+
+        * src/grep.c: ck_atoi () added instead of atoi ().
+        Suggestion from Jim Meyering.
+        ck_atoi () pulled from diffutils-2.7, maintained by Paul Eggert.
+
+        * AUTHORS: Rephrase of some sentences.
+        * README:  Rewording.
+        Noted and patched by Joel N. Weber II.
+
+1998-04-17 Kaveh R. Ghazi
+
+        * src/dfa.h: Don't define 'const', trust autoconf to handle it.
+
+1998-04-16 Alain Magloire
+
+        * tests/{status,empty}.sh: wrong return status.
+
+        * src/grep.c: Remove the REGEX part in usage (), it was
+        consider overkill by most.
+
+1998-04-14  Eli Zaretskii
+
+        * djgpp/config.bat: Support file names with multiple dots on all
+        platforms.
+
+        * djgpp/README: Add instructions about file names illegal on
+        MS-DOS.
+
+1998-04-13 Alain Magloire
+
+        * src/dfa.c: by "popular" demand reverse
+        back to '_' not word-constituent.
+
+        * grep-2.1.1c available for testing.
+
+1998-04-13  Karl Heuer
+
+        * src/grep.c: (a) The directory check is done too early:
+        logically, if the argument is "-", then it refers to standard
+        input, regardless of whether there's something in the file
+        system answering to "-".
+        (b) The sh command "grep -l root /etc/passwd /etc/group 0<&-"
+        prints "(standard input)" instead of "/etc/passwd", because it
+        mistakenly believes that a named file will never be opened on fd
+        0.  The string "(standard input)" should be based on the file
+        having been originally specified as "-", rather than making
+        assumptions about the fd.
+        (c) the code that calls close(fd) is being done outside of the
+        test for a bad fd.  Thus, if the open failed, this code will
+        attempt to close(-1).  It should be done inside the "fd != -1"
+        branch.
+        This patch addresses all three of these problems.
+
+1998-04-13 Alain Magloire
+
+        * configure.in: remove the deprecated AC_ISC_POSIX macro.
+        Spotted by Karl Heuer.
+
+1998-04-03  Eli Zaretskii
+
+        * djgpp/main.mak, djgpp/src.mak, djgpp/tests.mak: Updated from the
+        relevant Makefile.in files.
+
+        * djgpp/config.bat: Create files in intl directory like the
+        configure script does.
+
+1998-03-28  Eli Zaretskii
+
+        * djgpp/main.mak, djgpp/src.mak, djgpp/tests.mak: Updated to track
+        changes in respective Makefile.in files.
+
+        * src/dosbuf.c (guess_type): Avoid running off the end of the
+        buffer.  Spotted by Paul Eggert.
+
+1998-03-27  Alain Magloire
+
+        * grep-2.1.1b.tar.gz available.
+
+        * src/regex.c: CLASS_CHAR_MAX set to 256 instead of 6
+        when WCTYPE and WCHAR are not defined. When class names
+        where bigger then 6, it will not detect an error.
+        example '[[:alphabet:]]'.
+
+        * Updated the copyright of the files with emacs.
+        With emacs Jim :).
+
+1998-03-26 Jim Meyering
+
+        * src/dfa.c (IS_WORD_CONSTITUENT): Define.
+        (lex): Use IS_WORD_CONSTITUENT, not ISALNUM.
+        Don't special-case '_'.
+        (dfastate): Use IS_WORD_CONSTITUENT, not ISALNUM.
+        (dfaexec): Likewise.
+
+1998-03-25  Alain Magloire
+
+        * tests/warning.sh: typos and replace the echos with
+        a simple cat.
+        Noted By Jim Meyering.
+
+        * src/regex.c: #undef ISASCII and ISPRINT before defining
+        them(On Solaris it was define).
+        Pattern 'a[[:]:]]b' is an invalid char class and the error
+        from regex was 1(REG_NOMATCH) instead of 2 (REG_ECTYPE).
+        Fix with help from Ulrich Drepper.
+
+        * src/grep.c (usage): Ulrich wrote: "A single printf should
+        not have more than 900 bytes. For translation reasons the
+        text shouldn't be split in too many pieces since this is
+        tiresome and also does not help to generate a consistent picture."
+        Noted by Ulrich Drepper.
+        * src/grep.c (usage): Dig out and old patch from
+        Franc,ois to explain the regex in usage().
+        Ideas from Franc,ois Pinard.
+
+1998-03-23 Alain Magloire
+
+        * testing: grep-2.1.1a for testing.
+
+        * configure.in: Solaris needs '-lw' if we use wchar/wctype
+        functions.
+        * src/btowc.c: New file from GNU libc. Solaris 2.5 don't
+        have it define.
+        * configure.in : check for btowc ().
+
+        * regex.c: Include <wchar.h> before <wctype.h>, to work around
+        a Solaris 2.5 bug.
+        Patch provided by Paul Eggert.
+
+        * tests/status.sh: new file to check return status code.
+        * tests/empty.sh: new file to check for empty pattern.
+        * tests/warning.sh: new file to tell where to report errors.
+
+        * configure.in: If available, prefer support for large files
+        unless the user specified one of the CPPFLAGS, LDFLAGS, or LIBS
+        variables.
+        Done by Paul Eggert.
+
+        * src/grep.c (usage): change prep.ai.mit.edu for gnu.org.
+
+1998-03-18 Alain Magloire
+
+        * src/grep.c (usage): Formating the --help message a bit off.
+        Noted by William Bader.
+
+        * src/grep.c (main): When checking conflicting matcher for option -E the
+        matcher was to "egrep" instead of "posix-egrep".
+        Reported by kwzh@gnu.org.
+
+        * src/grep.c: Typos and rewording the --help message.
+        Reported by Karl Heuer.
+
+        * src/grep.1: The man page wording :
+          A regular expression matching a single character may be
+          followed by one of several repetition operators:
+        is unclear since 'x(yz)*z' is a valid regex.
+        Remove the "matching a single character".
+        Suggested by Harald Hanche-Olsen.
+
+        * src/grep.c (main): '-f /dev/null' now specifies no patterns
+        and therfore matches nothing.
+        Reported by Jorge Stolfi.
+        Patched by Paul Eggert.
+
+1998-03-10 Alain Magloire
+
+        * Ice storm 98(el nino). Lost grep repository disk,
+        and my $HOME directory, etc ..
+        Trying to get the emails/patch from dejanews.com
+        and start from grep-2.1.
+        sigh ....
+
+1997-11-01 Alain Magloire
+
+        * src/grep.c: For the long options, the problems are:
+        --file appears in the option table as 'no_argument'
+        instead of 'required_argument'.
+        --files-with-matches is missing from the option table.
+        The help lists '--fixed-strings' as the long option for -F,
+        the table has '--fixed-regexp'.
+        --regexp appears in the option table as 'no_argument'
+        instead of 'required_argument'.
+        --with-filename is missing from the option table.
+        Reported by Grant McDorman and Krishna Sethuraman.
+
+1997-10-19 Alain Magloire
+
+        * src/grep.c: the option "with-filename was not in the arg table.
+        Corrected by Jim Hand.
+
+        * GNU gettext library from gettext-0.10.32.
+
+        * src/grep.c: reverse back to greping directories,
+        One could skip the error message by defining
+        SKIP_DIR_ERROR. There is no clear way of doing
+        things, I hope to setle this on the next majore release
+        Thanks Paul Eggert, Eli Zaretskii and gnits for the
+        exchange.
+
+        * tests/status.sh: add this check to make sure
+        That the return status code is ok.
+
+1997-10-10 Andreas Schwab
+
+        * src/grep.1: Fix formatting.
+
+        * configure.in: Check for wctype.h, wchar.h, libintl.h and
+        isascii, which are needed for regex.c.
+
+1997-10-01 Paul Eggert
+
+        * src/grep.c (fillbuf): Don't warn about mmap failures.
+
+1997-09-7 Alain Magloire
+
+        * src/grep.c: added code for -H --with-filename.
+
+        * djgpp/*: patch wrongly apply
+        duplication of text in djgpp/{README,config.h}.
+        Filter djgpp/config.bat with unix2dos.
+
+        * djgpp/make.mak: beautify
+        From Eli Zaretskii.
+
+        * grep-2.1 release.
+
+1997-09-01 Alain Magloire
+
+        * grep-2.0f out for testing.
+
+        * update to GNU gettext library from gettext-0.10.31
+
+        * grep.c : have a nicer format for --version.
+        Noted by Ulrich Drepper.
+
+        * obstack.[ch]: updated from GNU C library
+        * configure.in: look for stdlib.h [HAVE_STDLIB_H]
+        Comments from Ulrich Drepper.
+
+1997-08-25 Philippe De Muyter  <phdm@info.ucl.ac.be>
+
+        * src/dfa.c (sys/types.h): File included unconditionnaly.
+
+1997-08-16  Eli Zaretskii  <eliz@is.elta.co.il>
+
+        * grep.c (long_options) [O_BINARY]: Add DOS-specific options.
+        (fillbuf) [O_BINARY]: For DOS-style text files, strip CR
+        characters at end of line.
+        (prline) [O_BINARY]: Report correct byte offsets, even though CR
+        characters were stripped when reading the file.
+        (usage) [O_BINARY]: Add DOS-specific options.
+        (setmatcher) [HAVE_SETRLIMIT]: Set re_max_failures so that the
+        matcher won't ever overflow the stack.
+        (main) [__MSDOS__, _WIN32]: Handle backslashes and drive letters
+        in argv[0], remove the .exe suffix, and downcase the prgram name.
+        [O_BINARY]: Pass additional DOS-specific options to getopt_long
+        and handle them.  Call stat before attempting to open the file, in
+        case it is a directory (DOS will fail the open call for
+        directories).  Switch the input descriptor to binary mode, unless
+        it is a terminal device.
+
+        * system.h [O_BINARY]: Define macros to switch a handle to binary
+        mode, so binary files could be grep'ed on MS-DOS and MS-Windows.
+        [HAVE_SETLOCALE]: Test for HAVE_SETLOCALE instead of
+        HAVE_LC_MESSAGES, to prevent compilation error in grep.c on
+        systems which don't define HAVE_LC_MESSAGES, but have setlocale.
+
+        * dosbuf.c: New file, functions specific for MS-DOS/MS-Windows.
+        (guess_type, undossify_input, dossified_pos): New functions.
+
+        * djgpp/config.h, djgpp/config.bat, djgpp/main.mak, djgpp/src.mak,
+        djgpp/po.mak, djgpp/intl.mak, djgpp/tests.mak, djgpp/po2tbl.sed:
+        New files, for building Grep with DJGPP tools for MS-DOS and
+        MS-Windows.
+
+        * grep.1: Document DOS-specific switches.
+
+1997-08-08 Alain Magloire
+
+        * grep-2.0e: available for testing
+
+        * grep.c: change LC_MESSAGE to LC_ALL for (LC_CTYPE).
+        Suggested by Jochen Hein.
+
+        * ABOUT-NLS: updated.
+        * grep.c: --version: more verbosity (COPYRIGHT).
+        * grep.c: --help: PATTERN, FILE instead of <pattern>, <file>.
+        * INSTALL.grep: not necessary removed.
+        * configure.in: --disable-regex rename --without-include-regex.
+        * THANKS: format: first row name, second email.
+        * ChangeLog: format ISO 8601.
+        Reported by Franc,ois Pinard.
+
+        * grep.c: move dcl of struct stat st into "else" where it's used.
+        Reported by Jim Meyering.
+
+        * grep.c: totalnl should be %u in printf.
+        Reported by Michael Aichlmay
+        Corrected with guidance from Ulrich Drepper
+
+1997-07-24 Alain Magloire <alainm@rcsm.ee.mcgill.ca>
+
+        * Makefile.am: corrected an error when installing {f,e}grep.1.
+        From Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
+        From Ulrich Drepper <drepper@cygnus.com>.
+
+        * Many files: use PARAMS instead of __STDC__ for prototypes.
+        From Jim Meyering <meyering@eng.ascend.com>.
+        Patch provided by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
+
+        * dfa.[ch]: uses the one in gawk-3.0.3 with the patch from
+        Arnold (see Changelog: July 12 1997)
+
+        * grep.1: a note to say -l, -L, -q stop on first match.
+        Noted by Andrew Beattie <gaffer@tug.com>.
+
+        * grep.c: refuse to scan if the file is a directory.
+        This was causing problems on SUNs. If the directory contains
+        a file that could match the pattern, garbage was display.
+
+        * tests directory: added new set of tests from Henry Spencer
+        regex package. Change the way the tests were done to be more
+        conformant to automake.
+
+        * configure.in: added --disable-regex for folks with their own fuctions.
+
+        * grep-20d : available for testing
+
+1997-07-18 Alain Magloire <alainm@rcsm.ee.mcgill.ca>
+
+        * grep-2.0c: available for testing
+
+1997-07-17 Alain Magloire <alainm@rcsm.ee.mcgill.ca>
+
+        * src/grep.c: Cause grep to fail if 'fclose (stdout)' fails.
+        From Jim Meyering <meyering@eng.ascend.com>.
+
+        * grep.c:usage() more consistency in the --help.
+
+        * egrep, fgrep were links This is in violation of GNU standards:
+        "Please don't make the behavior of a utility depend on the name used
+        to invoke it.  It is useful sometimes to make a link to a utility with
+        a different name, and that should not change what it does."
+        For now egrep and fgrep will be copies of grep. A better scheme
+        should be found later.
+        After discussion with Tom Tromey <tromey@cygnus.com>.
+
+        * fgrep.man and egrep.man included: They are stubs that call grep.1.
+        * Makefile.am: modified to install {f,e,}grep[,.1].
+
+        * speed hack for -l, -L: bail out on first match.
+        From Scott Weikart <scott@igc.apc.org>.
+
+        * *.[ch]: provided prototypes for strict argument checking
+        With the help of Stewart Levin <stew@sep.stanford.edu>.
+
+1997-07-16 Alain Magloire <alainm@rcsm.ee.mcgill.ca>
+
+        * configure.in: typo in the creation of po/Makefile
+        Noted by Volker Borchert bt@teknon.de.
+
+        * grep-2.0b: make it available for testing.
+
+1997-07-15 Alain Magloire <alainm@rcsm.ee.mcgill.ca>
+
+        * src/grep.c usage(): cut the --help in smaller printf()'s
+        Noted by Ulrich Drepper <drepper@cygnus.com>.
+
+1997-07-14 Alain Magloire <alainm@rcsm.ee.mcgill.ca>
+
+        * grep-2.0a: make an alpha available for testing.
+
+1997-07-12 Alain Magloire <alainm@rcsm.ee.mcgill.ca>
+
+        * run gettextize: added the po directory filled with *.po files.
+
+        * check.sh, scriptgen.awk: fix grep paths.
+
+        * change the directory strucure: grep is now in src to comply with
+        gettext.m4.
+
+        * grep.c version.c [VERSION]: got rid of version.c,
+        it is now define via config.h.
+
+        * dfa.c: patch to speed up initialization.
+        Arnold Robbins (arnold@gnu.ai.mit.edu).
+
+1997-07-09 Alain Magloire <alainm@rcsm.ee.mcgill.ca>
+
+        * *.c [HAVE_CONFIG_H]: Macro defined.
+
+        * support for I18N in Makefile.am and configure.in.
+
+        * update all the string to use gettext(I18N).
+        Help from Franc,ois Pinard previous patch <pinard@IRO.UMontreal.CA>.
+
+1997-07-04 Alain Magloire <alainm@rcsm.ee.mcgill.ca>
+
+        * obstack.[ch]: updated from glibc.
+        Work of Ulrich Drepper <drepper@cygnus.com>.
+
+        * regex.[ch]: updated from glibc.
+        Work of Ulrich Drepper <drepper@cygnus.com>.
+
+        * grep.c: for option -e not counting '\n' for new keys.
+        From Mark Waite <markw@mddmew.fc.hp.com>.
+
+        * grep.c: for option -f allocating the right count.
+        From Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>.
+        Mike Heartel (mike@cs.uoregon.edu).
+
+        * kwset.c (bmexec): Cast tp[-2] to unsigned char before comparing.
+        From Jim Meyering <meyering@asic.sc.ti.com>.
+
+        * grep.1: various typos.
+        From Keith Bostic <bostic@bsdi.com>.
+        Mike Heartel (mike@cs.uoregon.edu).
+
+1997-06-17 Alain Magloire <alainm@rcsm.ee.mcgill.ca>
+
+        * grep.c: support for long options.
+        patch done by Franc,ois Pinard <pinard@IRO.UMontreal.CA>.
+
+        * add getopt1.c in Makefile.am.
+        Noted by Franc,ois Pinard <pinard@IRO.UMontreal.CA>
+
+        * replace getopt.[ch] and add getopt1.c.
+
+        * kwset.c: undef malloc before define it.
+        Franc,ois Pinard <pinard@IRO.UMontreal.CA>.
+
+1997-06-07 Alain Magloire <alainm@rcsm.ee.mcgill.ca>
+
+        * grep.c: format incorrect in
+        fprintf("%s: warning: %s: %s...", filename, strerror(errno)).
+        Mike Heartel (mike@cs.uoregon.edu).
+
+1996-11-19  David J MacKenzie  <djm@catapult.va.pubnix.com>
+
+        * make.com: Set the logical SYS. From rdb@cocamrd.oz.au (Rodney Brown).
+
+        * grep.c (S_ISREG): Define if not defined already, for e.g.
+        SunOS 4.0.3.
+
+        * dfa.c (test_bit, set_bit, clear_bit): Renamed from tstbit,
+        setbit, clrbit to avoid conflict with HP-UX sys/param.h macros.
+
+        * memchr.c: New file, from GNU libc.
+        * grep.c (memchr): Remove definition.
+        * configure.in: Use AC_REPLACE_FUNCS for memchr.
+
+        * configure.in: Remove unused checks for memalign and unsigned char.
+        * grep.c: HAVE_WORKING_MMAP -> HAVE_MMAP.
+
+        * system.h: New file.
+        * dfa.c, kwset.c, grep.c, search.c: Use it instead of duplicating
+        portability boilerplate.
+
+        * grep.c: Include sys/types.h once, instead of three times
+        conditionally.
+        * dfa.c, kwset.c, search.c: Include sys/types.h unconditionally,
+        to always try to get size_t (needed on some old SysV's).
+
+        * dfa.c: Define strchr in terms of index, not the other way around.
+        * search.c: Use memcpy instead of bcopy.
+
+1996-11-15  David J MacKenzie  <djm@catapult.va.pubnix.com>
+
+        * Many files: Update FSF address.
+        Update configuration to use autoconf v2 and automake.
+
+1993-05-22  Mike Haertel  <mike@cs.uoregon.edu>
+
+        * Version 2.0 released.
+
+Copyright (C) 1998-2021 Free Software Foundation, Inc.
+Copying and distribution of this file, with or without modification,
+  are permitted provided the copyright notice and this notice are preserved.
diff --git a/src/grep/GNUmakefile b/src/grep/GNUmakefile
new file mode 100644
index 0000000..0c99d58
--- /dev/null
+++ b/src/grep/GNUmakefile
@@ -0,0 +1,127 @@
+# Having a separate GNUmakefile lets me 'include' the dynamically
+# generated rules created via cfg.mk (package-local configuration)
+# as well as maint.mk (generic maintainer rules).
+# This makefile is used only if you run GNU Make.
+# It is necessary if you want to build targets usually of interest
+# only to the maintainer.
+
+# Copyright (C) 2001, 2003, 2006-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# If the user runs GNU make but has not yet run ./configure,
+# give them a diagnostic.
+_gl-Makefile := $(wildcard [M]akefile)
+ifneq ($(_gl-Makefile),)
+
+# Make tar archive easier to reproduce.
+export TAR_OPTIONS = --owner=0 --group=0 --numeric-owner
+
+# Allow the user to add to this in the Makefile.
+ALL_RECURSIVE_TARGETS =
+
+include Makefile
+
+# Some projects override e.g., _autoreconf here.
+-include $(srcdir)/cfg.mk
+
+# Allow cfg.mk to override these.
+_build-aux ?= build-aux
+_autoreconf ?= autoreconf -v
+
+include $(srcdir)/maint.mk
+
+# Ensure that $(VERSION) is up to date for dist-related targets, but not
+# for others: rerunning autoreconf and recompiling everything isn't cheap.
+_have-git-version-gen := \
+  $(shell test -f $(srcdir)/$(_build-aux)/git-version-gen && echo yes)
+ifeq ($(_have-git-version-gen)0,yes$(MAKELEVEL))
+  _is-dist-target ?= $(filter-out %clean, \
+    $(filter maintainer-% dist% alpha beta stable,$(MAKECMDGOALS)))
+  _is-install-target ?= $(filter-out %check, $(filter install%,$(MAKECMDGOALS)))
+  ifneq (,$(_is-dist-target)$(_is-install-target))
+    _curr-ver := $(shell cd $(srcdir)				\
+                   && $(_build-aux)/git-version-gen		\
+                         .tarball-version			\
+                         $(git-version-gen-tag-sed-script))
+    ifneq ($(_curr-ver),$(VERSION))
+      ifeq ($(_curr-ver),UNKNOWN)
+        $(info WARNING: unable to verify if $(VERSION) is the correct version)
+      else
+        ifneq (,$(_is-install-target))
+          # GNU Coding Standards state that 'make install' should not cause
+          # recompilation after 'make all'.  But as long as changing the version
+          # string alters config.h, the cost of having 'make all' always have an
+          # up-to-date version is prohibitive.  So, as a compromise, we merely
+          # warn when installing a version string that is out of date; the user
+          # should run 'autoreconf' (or something like 'make distcheck') to
+          # fix the version, 'make all' to propagate it, then 'make install'.
+          $(info WARNING: version string $(VERSION) is out of date;)
+          $(info run '$(MAKE) _version' to fix it)
+        else
+          $(info INFO: running autoreconf for new version string: $(_curr-ver))
+GNUmakefile: _version
+	touch GNUmakefile
+        endif
+      endif
+    endif
+  endif
+endif
+
+.PHONY: _version
+_version:
+	cd $(srcdir) && rm -rf autom4te.cache .version && $(_autoreconf)
+	$(MAKE) $(AM_MAKEFLAGS) Makefile
+
+else
+
+.DEFAULT_GOAL := abort-due-to-no-makefile
+srcdir = .
+
+# The package can override .DEFAULT_GOAL to run actions like autoreconf.
+-include ./cfg.mk
+
+# Allow cfg.mk to override these.
+_build-aux ?= build-aux
+_autoreconf ?= autoreconf -v
+
+include ./maint.mk
+
+ifeq ($(.DEFAULT_GOAL),abort-due-to-no-makefile)
+$(MAKECMDGOALS): abort-due-to-no-makefile
+endif
+
+abort-due-to-no-makefile:
+	@echo There seems to be no Makefile in this directory.   1>&2
+	@echo "You must run ./configure before running '$(MAKE)'." 1>&2
+	@exit 1
+
+endif
+
+# Tell version 3.79 and up of GNU make to not build goals in this
+# directory in parallel, in case someone tries to build multiple
+# targets, and one of them can cause a recursive target to be invoked.
+
+# Only set this if Automake doesn't provide it.
+AM_RECURSIVE_TARGETS ?= $(RECURSIVE_TARGETS:-recursive=) \
+  $(RECURSIVE_CLEAN_TARGETS:-recursive=) \
+  dist distcheck tags ctags
+
+ALL_RECURSIVE_TARGETS += $(AM_RECURSIVE_TARGETS)
+
+ifneq ($(word 2, $(MAKECMDGOALS)), )
+ifneq ($(filter $(ALL_RECURSIVE_TARGETS), $(MAKECMDGOALS)), )
+.NOTPARALLEL:
+endif
+endif
diff --git a/src/grep/INSTALL b/src/grep/INSTALL
new file mode 100644
index 0000000..e82fd21
--- /dev/null
+++ b/src/grep/INSTALL
@@ -0,0 +1,368 @@
+Installation Instructions
+*************************
+
+   Copyright (C) 1994-1996, 1999-2002, 2004-2017, 2020-2021 Free
+Software Foundation, Inc.
+
+   Copying and distribution of this file, with or without modification,
+are permitted in any medium without royalty provided the copyright
+notice and this notice are preserved.  This file is offered as-is,
+without warranty of any kind.
+
+Basic Installation
+==================
+
+   Briefly, the shell command './configure && make && make install'
+should configure, build, and install this package.  The following
+more-detailed instructions are generic; see the 'README' file for
+instructions specific to this package.  Some packages provide this
+'INSTALL' file but do not implement all of the features documented
+below.  The lack of an optional feature in a given package is not
+necessarily a bug.  More recommendations for GNU packages can be found
+in *note Makefile Conventions: (standards)Makefile Conventions.
+
+   The 'configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation.  It uses
+those values to create a 'Makefile' in each directory of the package.
+It may also create one or more '.h' files containing system-dependent
+definitions.  Finally, it creates a shell script 'config.status' that
+you can run in the future to recreate the current configuration, and a
+file 'config.log' containing compiler output (useful mainly for
+debugging 'configure').
+
+   It can also use an optional file (typically called 'config.cache' and
+enabled with '--cache-file=config.cache' or simply '-C') that saves the
+results of its tests to speed up reconfiguring.  Caching is disabled by
+default to prevent problems with accidental use of stale cache files.
+
+   If you need to do unusual things to compile the package, please try
+to figure out how 'configure' could check whether to do them, and mail
+diffs or instructions to the address given in the 'README' so they can
+be considered for the next release.  If you are using the cache, and at
+some point 'config.cache' contains results you don't want to keep, you
+may remove or edit it.
+
+   The file 'configure.ac' (or 'configure.in') is used to create
+'configure' by a program called 'autoconf'.  You need 'configure.ac' if
+you want to change it or regenerate 'configure' using a newer version of
+'autoconf'.
+
+   The simplest way to compile this package is:
+
+  1. 'cd' to the directory containing the package's source code and type
+     './configure' to configure the package for your system.
+
+     Running 'configure' might take a while.  While running, it prints
+     some messages telling which features it is checking for.
+
+  2. Type 'make' to compile the package.
+
+  3. Optionally, type 'make check' to run any self-tests that come with
+     the package, generally using the just-built uninstalled binaries.
+
+  4. Type 'make install' to install the programs and any data files and
+     documentation.  When installing into a prefix owned by root, it is
+     recommended that the package be configured and built as a regular
+     user, and only the 'make install' phase executed with root
+     privileges.
+
+  5. Optionally, type 'make installcheck' to repeat any self-tests, but
+     this time using the binaries in their final installed location.
+     This target does not install anything.  Running this target as a
+     regular user, particularly if the prior 'make install' required
+     root privileges, verifies that the installation completed
+     correctly.
+
+  6. You can remove the program binaries and object files from the
+     source code directory by typing 'make clean'.  To also remove the
+     files that 'configure' created (so you can compile the package for
+     a different kind of computer), type 'make distclean'.  There is
+     also a 'make maintainer-clean' target, but that is intended mainly
+     for the package's developers.  If you use it, you may have to get
+     all sorts of other programs in order to regenerate files that came
+     with the distribution.
+
+  7. Often, you can also type 'make uninstall' to remove the installed
+     files again.  In practice, not all packages have tested that
+     uninstallation works correctly, even though it is required by the
+     GNU Coding Standards.
+
+  8. Some packages, particularly those that use Automake, provide 'make
+     distcheck', which can by used by developers to test that all other
+     targets like 'make install' and 'make uninstall' work correctly.
+     This target is generally not run by end users.
+
+Compilers and Options
+=====================
+
+   Some systems require unusual options for compilation or linking that
+the 'configure' script does not know about.  Run './configure --help'
+for details on some of the pertinent environment variables.
+
+   You can give 'configure' initial values for configuration parameters
+by setting variables in the command line or in the environment.  Here is
+an example:
+
+     ./configure CC=c99 CFLAGS=-g LIBS=-lposix
+
+   *Note Defining Variables::, for more details.
+
+Compiling For Multiple Architectures
+====================================
+
+   You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory.  To do this, you can use GNU 'make'.  'cd' to the
+directory where you want the object files and executables to go and run
+the 'configure' script.  'configure' automatically checks for the source
+code in the directory that 'configure' is in and in '..'.  This is known
+as a "VPATH" build.
+
+   With a non-GNU 'make', it is safer to compile the package for one
+architecture at a time in the source code directory.  After you have
+installed the package for one architecture, use 'make distclean' before
+reconfiguring for another architecture.
+
+   On MacOS X 10.5 and later systems, you can create libraries and
+executables that work on multiple system types--known as "fat" or
+"universal" binaries--by specifying multiple '-arch' options to the
+compiler but only a single '-arch' option to the preprocessor.  Like
+this:
+
+     ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+                 CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+                 CPP="gcc -E" CXXCPP="g++ -E"
+
+   This is not guaranteed to produce working output in all cases, you
+may have to build one architecture at a time and combine the results
+using the 'lipo' tool if you have problems.
+
+Installation Names
+==================
+
+   By default, 'make install' installs the package's commands under
+'/usr/local/bin', include files under '/usr/local/include', etc.  You
+can specify an installation prefix other than '/usr/local' by giving
+'configure' the option '--prefix=PREFIX', where PREFIX must be an
+absolute file name.
+
+   You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files.  If you
+pass the option '--exec-prefix=PREFIX' to 'configure', the package uses
+PREFIX as the prefix for installing programs and libraries.
+Documentation and other data files still use the regular prefix.
+
+   In addition, if you use an unusual directory layout you can give
+options like '--bindir=DIR' to specify different values for particular
+kinds of files.  Run 'configure --help' for a list of the directories
+you can set and what kinds of files go in them.  In general, the default
+for these options is expressed in terms of '${prefix}', so that
+specifying just '--prefix' will affect all of the other directory
+specifications that were not explicitly provided.
+
+   The most portable way to affect installation locations is to pass the
+correct locations to 'configure'; however, many packages provide one or
+both of the following shortcuts of passing variable assignments to the
+'make install' command line to change installation locations without
+having to reconfigure or recompile.
+
+   The first method involves providing an override variable for each
+affected directory.  For example, 'make install
+prefix=/alternate/directory' will choose an alternate location for all
+directory configuration variables that were expressed in terms of
+'${prefix}'.  Any directories that were specified during 'configure',
+but not in terms of '${prefix}', must each be overridden at install time
+for the entire installation to be relocated.  The approach of makefile
+variable overrides for each directory variable is required by the GNU
+Coding Standards, and ideally causes no recompilation.  However, some
+platforms have known limitations with the semantics of shared libraries
+that end up requiring recompilation when using this method, particularly
+noticeable in packages that use GNU Libtool.
+
+   The second method involves providing the 'DESTDIR' variable.  For
+example, 'make install DESTDIR=/alternate/directory' will prepend
+'/alternate/directory' before all installation names.  The approach of
+'DESTDIR' overrides is not required by the GNU Coding Standards, and
+does not work on platforms that have drive letters.  On the other hand,
+it does better at avoiding recompilation issues, and works well even
+when some directory options were not specified in terms of '${prefix}'
+at 'configure' time.
+
+Optional Features
+=================
+
+   If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving 'configure' the
+option '--program-prefix=PREFIX' or '--program-suffix=SUFFIX'.
+
+   Some packages pay attention to '--enable-FEATURE' options to
+'configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to '--with-PACKAGE' options, where PACKAGE
+is something like 'gnu-as' or 'x' (for the X Window System).  The
+'README' should mention any '--enable-' and '--with-' options that the
+package recognizes.
+
+   For packages that use the X Window System, 'configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the 'configure' options '--x-includes=DIR' and
+'--x-libraries=DIR' to specify their locations.
+
+   Some packages offer the ability to configure how verbose the
+execution of 'make' will be.  For these packages, running './configure
+--enable-silent-rules' sets the default to minimal output, which can be
+overridden with 'make V=1'; while running './configure
+--disable-silent-rules' sets the default to verbose, which can be
+overridden with 'make V=0'.
+
+Particular systems
+==================
+
+   On HP-UX, the default C compiler is not ANSI C compatible.  If GNU CC
+is not installed, it is recommended to use the following options in
+order to use an ANSI C compiler:
+
+     ./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
+
+and if that doesn't work, install pre-built binaries of GCC for HP-UX.
+
+   HP-UX 'make' updates targets which have the same timestamps as their
+prerequisites, which makes it generally unusable when shipped generated
+files such as 'configure' are involved.  Use GNU 'make' instead.
+
+   On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
+parse its '<wchar.h>' header file.  The option '-nodtk' can be used as a
+workaround.  If GNU CC is not installed, it is therefore recommended to
+try
+
+     ./configure CC="cc"
+
+and if that doesn't work, try
+
+     ./configure CC="cc -nodtk"
+
+   On Solaris, don't put '/usr/ucb' early in your 'PATH'.  This
+directory contains several dysfunctional programs; working variants of
+these programs are available in '/usr/bin'.  So, if you need '/usr/ucb'
+in your 'PATH', put it _after_ '/usr/bin'.
+
+   On Haiku, software installed for all users goes in '/boot/common',
+not '/usr/local'.  It is recommended to use the following options:
+
+     ./configure --prefix=/boot/common
+
+Specifying the System Type
+==========================
+
+   There may be some features 'configure' cannot figure out
+automatically, but needs to determine by the type of machine the package
+will run on.  Usually, assuming the package is built to be run on the
+_same_ architectures, 'configure' can figure that out, but if it prints
+a message saying it cannot guess the machine type, give it the
+'--build=TYPE' option.  TYPE can either be a short name for the system
+type, such as 'sun4', or a canonical name which has the form:
+
+     CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+     OS
+     KERNEL-OS
+
+   See the file 'config.sub' for the possible values of each field.  If
+'config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+   If you are _building_ compiler tools for cross-compiling, you should
+use the option '--target=TYPE' to select the type of system they will
+produce code for.
+
+   If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with '--host=TYPE'.
+
+Sharing Defaults
+================
+
+   If you want to set default values for 'configure' scripts to share,
+you can create a site shell script called 'config.site' that gives
+default values for variables like 'CC', 'cache_file', and 'prefix'.
+'configure' looks for 'PREFIX/share/config.site' if it exists, then
+'PREFIX/etc/config.site' if it exists.  Or, you can set the
+'CONFIG_SITE' environment variable to the location of the site script.
+A warning: not all 'configure' scripts look for a site script.
+
+Defining Variables
+==================
+
+   Variables not defined in a site shell script can be set in the
+environment passed to 'configure'.  However, some packages may run
+configure again during the build, and the customized values of these
+variables may be lost.  In order to avoid this problem, you should set
+them in the 'configure' command line, using 'VAR=value'.  For example:
+
+     ./configure CC=/usr/local2/bin/gcc
+
+causes the specified 'gcc' to be used as the C compiler (unless it is
+overridden in the site shell script).
+
+Unfortunately, this technique does not work for 'CONFIG_SHELL' due to an
+Autoconf limitation.  Until the limitation is lifted, you can use this
+workaround:
+
+     CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash
+
+'configure' Invocation
+======================
+
+   'configure' recognizes the following options to control how it
+operates.
+
+'--help'
+'-h'
+     Print a summary of all of the options to 'configure', and exit.
+
+'--help=short'
+'--help=recursive'
+     Print a summary of the options unique to this package's
+     'configure', and exit.  The 'short' variant lists options used only
+     in the top level, while the 'recursive' variant lists options also
+     present in any nested packages.
+
+'--version'
+'-V'
+     Print the version of Autoconf used to generate the 'configure'
+     script, and exit.
+
+'--cache-file=FILE'
+     Enable the cache: use and save the results of the tests in FILE,
+     traditionally 'config.cache'.  FILE defaults to '/dev/null' to
+     disable caching.
+
+'--config-cache'
+'-C'
+     Alias for '--cache-file=config.cache'.
+
+'--quiet'
+'--silent'
+'-q'
+     Do not print messages saying which checks are being made.  To
+     suppress all normal output, redirect it to '/dev/null' (any error
+     messages will still be shown).
+
+'--srcdir=DIR'
+     Look for the package's source code in directory DIR.  Usually
+     'configure' can determine that directory automatically.
+
+'--prefix=DIR'
+     Use DIR as the installation prefix.  *note Installation Names:: for
+     more details, including other options available for fine-tuning the
+     installation locations.
+
+'--no-create'
+'-n'
+     Run the configure checks, but stop before creating any output
+     files.
+
+'configure' also accepts some other, not widely useful, options.  Run
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diff --git a/src/grep/Makefile.am b/src/grep/Makefile.am
new file mode 100644
index 0000000..e95ba15
--- /dev/null
+++ b/src/grep/Makefile.am
@@ -0,0 +1,84 @@
+# Process this file with automake to create Makefile.in
+#
+# Copyright 1997-1998, 2005-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+AUTOMAKE_OPTIONS = gnu 1.12
+
+SUBDIRS = po lib doc src tests gnulib-tests
+
+EXTRA_DIST =		\
+  .mailmap		\
+  ChangeLog-2009	\
+  dist-check.mk		\
+  README		\
+  README-alpha		\
+  THANKS.in		\
+  TODO			\
+  cfg.mk		\
+  thanks-gen
+
+# Shortcut targets to make it easier to run expensive tests.
+.PHONY: check-expensive
+check-expensive:
+	$(MAKE) check RUN_EXPENSIVE_TESTS=yes
+.PHONY: check-very-expensive
+check-very-expensive: check-expensive
+
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+.PHONY: run-syntax-check
+run-syntax-check: all
+	$(AM_V_GEN)test ! -d .git || $(MAKE) syntax-check
+
+# Arrange so that .tarball-version appears only in the distribution
+# tarball, and never in a checked-out repository.
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+	$(AM_V_GEN)echo $(VERSION) > $(distdir)/.tarball-version
+
+gen_start_date = 2009-11-27
+.PHONY: gen-ChangeLog
+gen-ChangeLog:
+	$(AM_V_GEN)if test -d .git; then				\
+	  log_fix="$(srcdir)/build-aux/git-log-fix";			\
+	  test -e "$$log_fix"						\
+	    && amend_git_log="--amend=$$log_fix"			\
+	    || amend_git_log=;						\
+	  $(top_srcdir)/build-aux/gitlog-to-changelog			\
+	    $$amend_git_log --since=$(gen_start_date) > $(distdir)/cl-t && \
+	    { rm -f $(distdir)/ChangeLog &&				\
+	      mv $(distdir)/cl-t $(distdir)/ChangeLog; }		\
+	fi
+
+# Sort in traditional ASCII order, regardless of the current locale;
+# otherwise we may get into trouble with distinct strings that the
+# current locale considers to be equal.
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+
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+
+THANKS: THANKS.in Makefile.am .mailmap thanks-gen
+	$(AM_V_GEN)rm -f $@-t $@;					\
+	{								\
+	  $(prologue); echo;						\
+	  { perl -ne '/^$$/.../^$$/ and !/^$$/ and s/  +/\0/ and print'	\
+	      $(srcdir)/THANKS.in;					\
+	    git log --pretty=format:'%aN%x00%aE'			\
+	      | $(ASSORT) -u;						\
+	  } | $(srcdir)/thanks-gen					\
+	    | LC_ALL=en_US.UTF-8 sort -k1,1;				\
+	  echo;								\
+	  printf ';; %s\n' 'Local Variables:' 'coding: utf-8' End:;	\
+	} > $@-t && chmod a-w $@-t && mv $@-t $@
diff --git a/src/grep/Makefile.in b/src/grep/Makefile.in
new file mode 100644
index 0000000..ee9a190
--- /dev/null
+++ b/src/grep/Makefile.in
@@ -0,0 +1,2177 @@
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+# @configure_input@
+
+# Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
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+am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/config.hin \
+	$(top_srcdir)/build-aux/compile \
+	$(top_srcdir)/build-aux/config.guess \
+	$(top_srcdir)/build-aux/config.rpath \
+	$(top_srcdir)/build-aux/config.sub \
+	$(top_srcdir)/build-aux/install-sh \
+	$(top_srcdir)/build-aux/missing ABOUT-NLS AUTHORS COPYING \
+	ChangeLog INSTALL NEWS README THANKS TODO build-aux/ar-lib \
+	build-aux/compile build-aux/config.guess \
+	build-aux/config.rpath build-aux/config.sub build-aux/depcomp \
+	build-aux/install-sh build-aux/mdate-sh build-aux/missing \
+	build-aux/texinfo.tex
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+distdir = $(PACKAGE)-$(VERSION)
+top_distdir = $(distdir)
+am__remove_distdir = \
+  if test -d "$(distdir)"; then \
+    find "$(distdir)" -type d ! -perm -200 -exec chmod u+w {} ';' \
+      && rm -rf "$(distdir)" \
+      || { sleep 5 && rm -rf "$(distdir)"; }; \
+  else :; fi
+am__post_remove_distdir = $(am__remove_distdir)
+am__relativize = \
+  dir0=`pwd`; \
+  sed_first='s,^\([^/]*\)/.*$$,\1,'; \
+  sed_rest='s,^[^/]*/*,,'; \
+  sed_last='s,^.*/\([^/]*\)$$,\1,'; \
+  sed_butlast='s,/*[^/]*$$,,'; \
+  while test -n "$$dir1"; do \
+    first=`echo "$$dir1" | sed -e "$$sed_first"`; \
+    if test "$$first" != "."; then \
+      if test "$$first" = ".."; then \
+        dir2=`echo "$$dir0" | sed -e "$$sed_last"`/"$$dir2"; \
+        dir0=`echo "$$dir0" | sed -e "$$sed_butlast"`; \
+      else \
+        first2=`echo "$$dir2" | sed -e "$$sed_first"`; \
+        if test "$$first2" = "$$first"; then \
+          dir2=`echo "$$dir2" | sed -e "$$sed_rest"`; \
+        else \
+          dir2="../$$dir2"; \
+        fi; \
+        dir0="$$dir0"/"$$first"; \
+      fi; \
+    fi; \
+    dir1=`echo "$$dir1" | sed -e "$$sed_rest"`; \
+  done; \
+  reldir="$$dir2"
+DIST_ARCHIVES = $(distdir).tar.gz $(distdir).tar.xz
+GZIP_ENV = --best
+DIST_TARGETS = dist-xz dist-gzip
+# Exists only to be overridden by the user if desired.
+AM_DISTCHECK_DVI_TARGET = dvi
+distuninstallcheck_listfiles = find . -type f -print
+am__distuninstallcheck_listfiles = $(distuninstallcheck_listfiles) \
+  | sed 's|^\./|$(prefix)/|' | grep -v '$(infodir)/dir$$'
+distcleancheck_listfiles = find . -type f -print
+pkglibexecdir = @pkglibexecdir@
+ACLOCAL = @ACLOCAL@
+ALLOCA = @ALLOCA@
+ALLOCA_H = @ALLOCA_H@
+AMTAR = @AMTAR@
+AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+APPLE_UNIVERSAL_BUILD = @APPLE_UNIVERSAL_BUILD@
+AR = @AR@
+ARFLAGS = @ARFLAGS@
+AUTOCONF = @AUTOCONF@
+AUTOHEADER = @AUTOHEADER@
+AUTOMAKE = @AUTOMAKE@
+AWK = @AWK@
+BITSIZEOF_PTRDIFF_T = @BITSIZEOF_PTRDIFF_T@
+BITSIZEOF_SIG_ATOMIC_T = @BITSIZEOF_SIG_ATOMIC_T@
+BITSIZEOF_SIZE_T = @BITSIZEOF_SIZE_T@
+BITSIZEOF_WCHAR_T = @BITSIZEOF_WCHAR_T@
+BITSIZEOF_WINT_T = @BITSIZEOF_WINT_T@
+CC = @CC@
+CCDEPMODE = @CCDEPMODE@
+CFLAGS = @CFLAGS@
+CFLAG_VISIBILITY = @CFLAG_VISIBILITY@
+COLORIZE_SOURCE = @COLORIZE_SOURCE@
+CONFIG_INCLUDE = @CONFIG_INCLUDE@
+CPP = @CPP@
+CPPFLAGS = @CPPFLAGS@
+CSCOPE = @CSCOPE@
+CTAGS = @CTAGS@
+CYGPATH_W = @CYGPATH_W@
+DEFS = @DEFS@
+DEPDIR = @DEPDIR@
+ECHO_C = @ECHO_C@
+ECHO_N = @ECHO_N@
+ECHO_T = @ECHO_T@
+EGREP = @EGREP@
+EMULTIHOP_HIDDEN = @EMULTIHOP_HIDDEN@
+EMULTIHOP_VALUE = @EMULTIHOP_VALUE@
+ENOLINK_HIDDEN = @ENOLINK_HIDDEN@
+ENOLINK_VALUE = @ENOLINK_VALUE@
+EOVERFLOW_HIDDEN = @EOVERFLOW_HIDDEN@
+EOVERFLOW_VALUE = @EOVERFLOW_VALUE@
+ERRNO_H = @ERRNO_H@
+ETAGS = @ETAGS@
+EXEEXT = @EXEEXT@
+FLOAT_H = @FLOAT_H@
+FNMATCH_H = @FNMATCH_H@
+GETOPT_CDEFS_H = @GETOPT_CDEFS_H@
+GETOPT_H = @GETOPT_H@
+GETTEXT_MACRO_VERSION = @GETTEXT_MACRO_VERSION@
+GL_CFLAG_ALLOW_WARNINGS = @GL_CFLAG_ALLOW_WARNINGS@
+GL_CXXFLAG_ALLOW_WARNINGS = @GL_CXXFLAG_ALLOW_WARNINGS@
+GL_GNULIB_ACCEPT = @GL_GNULIB_ACCEPT@
+GL_GNULIB_ACCEPT4 = @GL_GNULIB_ACCEPT4@
+GL_GNULIB_ACCESS = @GL_GNULIB_ACCESS@
+GL_GNULIB_ALIGNED_ALLOC = @GL_GNULIB_ALIGNED_ALLOC@
+GL_GNULIB_ALPHASORT = @GL_GNULIB_ALPHASORT@
+GL_GNULIB_ATOLL = @GL_GNULIB_ATOLL@
+GL_GNULIB_BIND = @GL_GNULIB_BIND@
+GL_GNULIB_BTOWC = @GL_GNULIB_BTOWC@
+GL_GNULIB_CALLOC_POSIX = @GL_GNULIB_CALLOC_POSIX@
+GL_GNULIB_CANONICALIZE_FILE_NAME = @GL_GNULIB_CANONICALIZE_FILE_NAME@
+GL_GNULIB_CHDIR = @GL_GNULIB_CHDIR@
+GL_GNULIB_CHOWN = @GL_GNULIB_CHOWN@
+GL_GNULIB_CLOSE = @GL_GNULIB_CLOSE@
+GL_GNULIB_CLOSEDIR = @GL_GNULIB_CLOSEDIR@
+GL_GNULIB_CONNECT = @GL_GNULIB_CONNECT@
+GL_GNULIB_COPY_FILE_RANGE = @GL_GNULIB_COPY_FILE_RANGE@
+GL_GNULIB_CREAT = @GL_GNULIB_CREAT@
+GL_GNULIB_CTIME = @GL_GNULIB_CTIME@
+GL_GNULIB_DIRFD = @GL_GNULIB_DIRFD@
+GL_GNULIB_DPRINTF = @GL_GNULIB_DPRINTF@
+GL_GNULIB_DUP = @GL_GNULIB_DUP@
+GL_GNULIB_DUP2 = @GL_GNULIB_DUP2@
+GL_GNULIB_DUP3 = @GL_GNULIB_DUP3@
+GL_GNULIB_DUPLOCALE = @GL_GNULIB_DUPLOCALE@
+GL_GNULIB_ENVIRON = @GL_GNULIB_ENVIRON@
+GL_GNULIB_EUIDACCESS = @GL_GNULIB_EUIDACCESS@
+GL_GNULIB_EXECL = @GL_GNULIB_EXECL@
+GL_GNULIB_EXECLE = @GL_GNULIB_EXECLE@
+GL_GNULIB_EXECLP = @GL_GNULIB_EXECLP@
+GL_GNULIB_EXECV = @GL_GNULIB_EXECV@
+GL_GNULIB_EXECVE = @GL_GNULIB_EXECVE@
+GL_GNULIB_EXECVP = @GL_GNULIB_EXECVP@
+GL_GNULIB_EXECVPE = @GL_GNULIB_EXECVPE@
+GL_GNULIB_EXPLICIT_BZERO = @GL_GNULIB_EXPLICIT_BZERO@
+GL_GNULIB_FACCESSAT = @GL_GNULIB_FACCESSAT@
+GL_GNULIB_FCHDIR = @GL_GNULIB_FCHDIR@
+GL_GNULIB_FCHMODAT = @GL_GNULIB_FCHMODAT@
+GL_GNULIB_FCHOWNAT = @GL_GNULIB_FCHOWNAT@
+GL_GNULIB_FCLOSE = @GL_GNULIB_FCLOSE@
+GL_GNULIB_FCNTL = @GL_GNULIB_FCNTL@
+GL_GNULIB_FDATASYNC = @GL_GNULIB_FDATASYNC@
+GL_GNULIB_FDOPEN = @GL_GNULIB_FDOPEN@
+GL_GNULIB_FDOPENDIR = @GL_GNULIB_FDOPENDIR@
+GL_GNULIB_FFLUSH = @GL_GNULIB_FFLUSH@
+GL_GNULIB_FFSL = @GL_GNULIB_FFSL@
+GL_GNULIB_FFSLL = @GL_GNULIB_FFSLL@
+GL_GNULIB_FGETC = @GL_GNULIB_FGETC@
+GL_GNULIB_FGETS = @GL_GNULIB_FGETS@
+GL_GNULIB_FNMATCH = @GL_GNULIB_FNMATCH@
+GL_GNULIB_FOPEN = @GL_GNULIB_FOPEN@
+GL_GNULIB_FPRINTF = @GL_GNULIB_FPRINTF@
+GL_GNULIB_FPRINTF_POSIX = @GL_GNULIB_FPRINTF_POSIX@
+GL_GNULIB_FPURGE = @GL_GNULIB_FPURGE@
+GL_GNULIB_FPUTC = @GL_GNULIB_FPUTC@
+GL_GNULIB_FPUTS = @GL_GNULIB_FPUTS@
+GL_GNULIB_FREAD = @GL_GNULIB_FREAD@
+GL_GNULIB_FREE_POSIX = @GL_GNULIB_FREE_POSIX@
+GL_GNULIB_FREOPEN = @GL_GNULIB_FREOPEN@
+GL_GNULIB_FSCANF = @GL_GNULIB_FSCANF@
+GL_GNULIB_FSEEK = @GL_GNULIB_FSEEK@
+GL_GNULIB_FSEEKO = @GL_GNULIB_FSEEKO@
+GL_GNULIB_FSTAT = @GL_GNULIB_FSTAT@
+GL_GNULIB_FSTATAT = @GL_GNULIB_FSTATAT@
+GL_GNULIB_FSYNC = @GL_GNULIB_FSYNC@
+GL_GNULIB_FTELL = @GL_GNULIB_FTELL@
+GL_GNULIB_FTELLO = @GL_GNULIB_FTELLO@
+GL_GNULIB_FTRUNCATE = @GL_GNULIB_FTRUNCATE@
+GL_GNULIB_FUTIMENS = @GL_GNULIB_FUTIMENS@
+GL_GNULIB_FWRITE = @GL_GNULIB_FWRITE@
+GL_GNULIB_GETC = @GL_GNULIB_GETC@
+GL_GNULIB_GETCHAR = @GL_GNULIB_GETCHAR@
+GL_GNULIB_GETCWD = @GL_GNULIB_GETCWD@
+GL_GNULIB_GETDELIM = @GL_GNULIB_GETDELIM@
+GL_GNULIB_GETDOMAINNAME = @GL_GNULIB_GETDOMAINNAME@
+GL_GNULIB_GETDTABLESIZE = @GL_GNULIB_GETDTABLESIZE@
+GL_GNULIB_GETENTROPY = @GL_GNULIB_GETENTROPY@
+GL_GNULIB_GETGROUPS = @GL_GNULIB_GETGROUPS@
+GL_GNULIB_GETHOSTNAME = @GL_GNULIB_GETHOSTNAME@
+GL_GNULIB_GETLINE = @GL_GNULIB_GETLINE@
+GL_GNULIB_GETLOADAVG = @GL_GNULIB_GETLOADAVG@
+GL_GNULIB_GETLOGIN = @GL_GNULIB_GETLOGIN@
+GL_GNULIB_GETLOGIN_R = @GL_GNULIB_GETLOGIN_R@
+GL_GNULIB_GETOPT_POSIX = @GL_GNULIB_GETOPT_POSIX@
+GL_GNULIB_GETPAGESIZE = @GL_GNULIB_GETPAGESIZE@
+GL_GNULIB_GETPASS = @GL_GNULIB_GETPASS@
+GL_GNULIB_GETPEERNAME = @GL_GNULIB_GETPEERNAME@
+GL_GNULIB_GETSOCKNAME = @GL_GNULIB_GETSOCKNAME@
+GL_GNULIB_GETSOCKOPT = @GL_GNULIB_GETSOCKOPT@
+GL_GNULIB_GETSUBOPT = @GL_GNULIB_GETSUBOPT@
+GL_GNULIB_GETTIMEOFDAY = @GL_GNULIB_GETTIMEOFDAY@
+GL_GNULIB_GETUMASK = @GL_GNULIB_GETUMASK@
+GL_GNULIB_GETUSERSHELL = @GL_GNULIB_GETUSERSHELL@
+GL_GNULIB_GRANTPT = @GL_GNULIB_GRANTPT@
+GL_GNULIB_GROUP_MEMBER = @GL_GNULIB_GROUP_MEMBER@
+GL_GNULIB_ICONV = @GL_GNULIB_ICONV@
+GL_GNULIB_IMAXABS = @GL_GNULIB_IMAXABS@
+GL_GNULIB_IMAXDIV = @GL_GNULIB_IMAXDIV@
+GL_GNULIB_INET_NTOP = @GL_GNULIB_INET_NTOP@
+GL_GNULIB_INET_PTON = @GL_GNULIB_INET_PTON@
+GL_GNULIB_IOCTL = @GL_GNULIB_IOCTL@
+GL_GNULIB_ISATTY = @GL_GNULIB_ISATTY@
+GL_GNULIB_ISBLANK = @GL_GNULIB_ISBLANK@
+GL_GNULIB_ISWBLANK = @GL_GNULIB_ISWBLANK@
+GL_GNULIB_ISWCTYPE = @GL_GNULIB_ISWCTYPE@
+GL_GNULIB_ISWDIGIT = @GL_GNULIB_ISWDIGIT@
+GL_GNULIB_ISWXDIGIT = @GL_GNULIB_ISWXDIGIT@
+GL_GNULIB_LCHMOD = @GL_GNULIB_LCHMOD@
+GL_GNULIB_LCHOWN = @GL_GNULIB_LCHOWN@
+GL_GNULIB_LINK = @GL_GNULIB_LINK@
+GL_GNULIB_LINKAT = @GL_GNULIB_LINKAT@
+GL_GNULIB_LISTEN = @GL_GNULIB_LISTEN@
+GL_GNULIB_LOCALECONV = @GL_GNULIB_LOCALECONV@
+GL_GNULIB_LOCALENAME = @GL_GNULIB_LOCALENAME@
+GL_GNULIB_LOCALTIME = @GL_GNULIB_LOCALTIME@
+GL_GNULIB_LSEEK = @GL_GNULIB_LSEEK@
+GL_GNULIB_LSTAT = @GL_GNULIB_LSTAT@
+GL_GNULIB_MALLOC_POSIX = @GL_GNULIB_MALLOC_POSIX@
+GL_GNULIB_MBRLEN = @GL_GNULIB_MBRLEN@
+GL_GNULIB_MBRTOWC = @GL_GNULIB_MBRTOWC@
+GL_GNULIB_MBSCASECMP = @GL_GNULIB_MBSCASECMP@
+GL_GNULIB_MBSCASESTR = @GL_GNULIB_MBSCASESTR@
+GL_GNULIB_MBSCHR = @GL_GNULIB_MBSCHR@
+GL_GNULIB_MBSCSPN = @GL_GNULIB_MBSCSPN@
+GL_GNULIB_MBSINIT = @GL_GNULIB_MBSINIT@
+GL_GNULIB_MBSLEN = @GL_GNULIB_MBSLEN@
+GL_GNULIB_MBSNCASECMP = @GL_GNULIB_MBSNCASECMP@
+GL_GNULIB_MBSNLEN = @GL_GNULIB_MBSNLEN@
+GL_GNULIB_MBSNRTOWCS = @GL_GNULIB_MBSNRTOWCS@
+GL_GNULIB_MBSPBRK = @GL_GNULIB_MBSPBRK@
+GL_GNULIB_MBSPCASECMP = @GL_GNULIB_MBSPCASECMP@
+GL_GNULIB_MBSRCHR = @GL_GNULIB_MBSRCHR@
+GL_GNULIB_MBSRTOWCS = @GL_GNULIB_MBSRTOWCS@
+GL_GNULIB_MBSSEP = @GL_GNULIB_MBSSEP@
+GL_GNULIB_MBSSPN = @GL_GNULIB_MBSSPN@
+GL_GNULIB_MBSSTR = @GL_GNULIB_MBSSTR@
+GL_GNULIB_MBSTOK_R = @GL_GNULIB_MBSTOK_R@
+GL_GNULIB_MBTOWC = @GL_GNULIB_MBTOWC@
+GL_GNULIB_MDA_ACCESS = @GL_GNULIB_MDA_ACCESS@
+GL_GNULIB_MDA_CHDIR = @GL_GNULIB_MDA_CHDIR@
+GL_GNULIB_MDA_CHMOD = @GL_GNULIB_MDA_CHMOD@
+GL_GNULIB_MDA_CLOSE = @GL_GNULIB_MDA_CLOSE@
+GL_GNULIB_MDA_CREAT = @GL_GNULIB_MDA_CREAT@
+GL_GNULIB_MDA_DUP = @GL_GNULIB_MDA_DUP@
+GL_GNULIB_MDA_DUP2 = @GL_GNULIB_MDA_DUP2@
+GL_GNULIB_MDA_ECVT = @GL_GNULIB_MDA_ECVT@
+GL_GNULIB_MDA_EXECL = @GL_GNULIB_MDA_EXECL@
+GL_GNULIB_MDA_EXECLE = @GL_GNULIB_MDA_EXECLE@
+GL_GNULIB_MDA_EXECLP = @GL_GNULIB_MDA_EXECLP@
+GL_GNULIB_MDA_EXECV = @GL_GNULIB_MDA_EXECV@
+GL_GNULIB_MDA_EXECVE = @GL_GNULIB_MDA_EXECVE@
+GL_GNULIB_MDA_EXECVP = @GL_GNULIB_MDA_EXECVP@
+GL_GNULIB_MDA_EXECVPE = @GL_GNULIB_MDA_EXECVPE@
+GL_GNULIB_MDA_FCLOSEALL = @GL_GNULIB_MDA_FCLOSEALL@
+GL_GNULIB_MDA_FCVT = @GL_GNULIB_MDA_FCVT@
+GL_GNULIB_MDA_FDOPEN = @GL_GNULIB_MDA_FDOPEN@
+GL_GNULIB_MDA_FILENO = @GL_GNULIB_MDA_FILENO@
+GL_GNULIB_MDA_GCVT = @GL_GNULIB_MDA_GCVT@
+GL_GNULIB_MDA_GETCWD = @GL_GNULIB_MDA_GETCWD@
+GL_GNULIB_MDA_GETPID = @GL_GNULIB_MDA_GETPID@
+GL_GNULIB_MDA_GETW = @GL_GNULIB_MDA_GETW@
+GL_GNULIB_MDA_ISATTY = @GL_GNULIB_MDA_ISATTY@
+GL_GNULIB_MDA_LSEEK = @GL_GNULIB_MDA_LSEEK@
+GL_GNULIB_MDA_MEMCCPY = @GL_GNULIB_MDA_MEMCCPY@
+GL_GNULIB_MDA_MKDIR = @GL_GNULIB_MDA_MKDIR@
+GL_GNULIB_MDA_MKTEMP = @GL_GNULIB_MDA_MKTEMP@
+GL_GNULIB_MDA_OPEN = @GL_GNULIB_MDA_OPEN@
+GL_GNULIB_MDA_PUTENV = @GL_GNULIB_MDA_PUTENV@
+GL_GNULIB_MDA_PUTW = @GL_GNULIB_MDA_PUTW@
+GL_GNULIB_MDA_READ = @GL_GNULIB_MDA_READ@
+GL_GNULIB_MDA_RMDIR = @GL_GNULIB_MDA_RMDIR@
+GL_GNULIB_MDA_STRDUP = @GL_GNULIB_MDA_STRDUP@
+GL_GNULIB_MDA_SWAB = @GL_GNULIB_MDA_SWAB@
+GL_GNULIB_MDA_TEMPNAM = @GL_GNULIB_MDA_TEMPNAM@
+GL_GNULIB_MDA_TZSET = @GL_GNULIB_MDA_TZSET@
+GL_GNULIB_MDA_UMASK = @GL_GNULIB_MDA_UMASK@
+GL_GNULIB_MDA_UNLINK = @GL_GNULIB_MDA_UNLINK@
+GL_GNULIB_MDA_WCSDUP = @GL_GNULIB_MDA_WCSDUP@
+GL_GNULIB_MDA_WRITE = @GL_GNULIB_MDA_WRITE@
+GL_GNULIB_MEMCHR = @GL_GNULIB_MEMCHR@
+GL_GNULIB_MEMMEM = @GL_GNULIB_MEMMEM@
+GL_GNULIB_MEMPCPY = @GL_GNULIB_MEMPCPY@
+GL_GNULIB_MEMRCHR = @GL_GNULIB_MEMRCHR@
+GL_GNULIB_MKDIR = @GL_GNULIB_MKDIR@
+GL_GNULIB_MKDIRAT = @GL_GNULIB_MKDIRAT@
+GL_GNULIB_MKDTEMP = @GL_GNULIB_MKDTEMP@
+GL_GNULIB_MKFIFO = @GL_GNULIB_MKFIFO@
+GL_GNULIB_MKFIFOAT = @GL_GNULIB_MKFIFOAT@
+GL_GNULIB_MKNOD = @GL_GNULIB_MKNOD@
+GL_GNULIB_MKNODAT = @GL_GNULIB_MKNODAT@
+GL_GNULIB_MKOSTEMP = @GL_GNULIB_MKOSTEMP@
+GL_GNULIB_MKOSTEMPS = @GL_GNULIB_MKOSTEMPS@
+GL_GNULIB_MKSTEMP = @GL_GNULIB_MKSTEMP@
+GL_GNULIB_MKSTEMPS = @GL_GNULIB_MKSTEMPS@
+GL_GNULIB_MKTIME = @GL_GNULIB_MKTIME@
+GL_GNULIB_NANOSLEEP = @GL_GNULIB_NANOSLEEP@
+GL_GNULIB_NL_LANGINFO = @GL_GNULIB_NL_LANGINFO@
+GL_GNULIB_NONBLOCKING = @GL_GNULIB_NONBLOCKING@
+GL_GNULIB_OBSTACK_PRINTF = @GL_GNULIB_OBSTACK_PRINTF@
+GL_GNULIB_OBSTACK_PRINTF_POSIX = @GL_GNULIB_OBSTACK_PRINTF_POSIX@
+GL_GNULIB_OPEN = @GL_GNULIB_OPEN@
+GL_GNULIB_OPENAT = @GL_GNULIB_OPENAT@
+GL_GNULIB_OPENDIR = @GL_GNULIB_OPENDIR@
+GL_GNULIB_OVERRIDES_STRUCT_STAT = @GL_GNULIB_OVERRIDES_STRUCT_STAT@
+GL_GNULIB_PCLOSE = @GL_GNULIB_PCLOSE@
+GL_GNULIB_PERROR = @GL_GNULIB_PERROR@
+GL_GNULIB_PIPE = @GL_GNULIB_PIPE@
+GL_GNULIB_PIPE2 = @GL_GNULIB_PIPE2@
+GL_GNULIB_POPEN = @GL_GNULIB_POPEN@
+GL_GNULIB_POSIX_MEMALIGN = @GL_GNULIB_POSIX_MEMALIGN@
+GL_GNULIB_POSIX_OPENPT = @GL_GNULIB_POSIX_OPENPT@
+GL_GNULIB_PREAD = @GL_GNULIB_PREAD@
+GL_GNULIB_PRINTF = @GL_GNULIB_PRINTF@
+GL_GNULIB_PRINTF_POSIX = @GL_GNULIB_PRINTF_POSIX@
+GL_GNULIB_PSELECT = @GL_GNULIB_PSELECT@
+GL_GNULIB_PTHREAD_COND = @GL_GNULIB_PTHREAD_COND@
+GL_GNULIB_PTHREAD_MUTEX = @GL_GNULIB_PTHREAD_MUTEX@
+GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK = @GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK@
+GL_GNULIB_PTHREAD_ONCE = @GL_GNULIB_PTHREAD_ONCE@
+GL_GNULIB_PTHREAD_RWLOCK = @GL_GNULIB_PTHREAD_RWLOCK@
+GL_GNULIB_PTHREAD_SIGMASK = @GL_GNULIB_PTHREAD_SIGMASK@
+GL_GNULIB_PTHREAD_SPIN = @GL_GNULIB_PTHREAD_SPIN@
+GL_GNULIB_PTHREAD_THREAD = @GL_GNULIB_PTHREAD_THREAD@
+GL_GNULIB_PTHREAD_TSS = @GL_GNULIB_PTHREAD_TSS@
+GL_GNULIB_PTSNAME = @GL_GNULIB_PTSNAME@
+GL_GNULIB_PTSNAME_R = @GL_GNULIB_PTSNAME_R@
+GL_GNULIB_PUTC = @GL_GNULIB_PUTC@
+GL_GNULIB_PUTCHAR = @GL_GNULIB_PUTCHAR@
+GL_GNULIB_PUTENV = @GL_GNULIB_PUTENV@
+GL_GNULIB_PUTS = @GL_GNULIB_PUTS@
+GL_GNULIB_PWRITE = @GL_GNULIB_PWRITE@
+GL_GNULIB_QSORT_R = @GL_GNULIB_QSORT_R@
+GL_GNULIB_RAISE = @GL_GNULIB_RAISE@
+GL_GNULIB_RANDOM = @GL_GNULIB_RANDOM@
+GL_GNULIB_RANDOM_R = @GL_GNULIB_RANDOM_R@
+GL_GNULIB_RAWMEMCHR = @GL_GNULIB_RAWMEMCHR@
+GL_GNULIB_READ = @GL_GNULIB_READ@
+GL_GNULIB_READDIR = @GL_GNULIB_READDIR@
+GL_GNULIB_READLINK = @GL_GNULIB_READLINK@
+GL_GNULIB_READLINKAT = @GL_GNULIB_READLINKAT@
+GL_GNULIB_REALLOCARRAY = @GL_GNULIB_REALLOCARRAY@
+GL_GNULIB_REALLOC_POSIX = @GL_GNULIB_REALLOC_POSIX@
+GL_GNULIB_REALPATH = @GL_GNULIB_REALPATH@
+GL_GNULIB_RECV = @GL_GNULIB_RECV@
+GL_GNULIB_RECVFROM = @GL_GNULIB_RECVFROM@
+GL_GNULIB_REMOVE = @GL_GNULIB_REMOVE@
+GL_GNULIB_RENAME = @GL_GNULIB_RENAME@
+GL_GNULIB_RENAMEAT = @GL_GNULIB_RENAMEAT@
+GL_GNULIB_REWINDDIR = @GL_GNULIB_REWINDDIR@
+GL_GNULIB_RMDIR = @GL_GNULIB_RMDIR@
+GL_GNULIB_RPMATCH = @GL_GNULIB_RPMATCH@
+GL_GNULIB_SCANDIR = @GL_GNULIB_SCANDIR@
+GL_GNULIB_SCANF = @GL_GNULIB_SCANF@
+GL_GNULIB_SCHED_YIELD = @GL_GNULIB_SCHED_YIELD@
+GL_GNULIB_SECURE_GETENV = @GL_GNULIB_SECURE_GETENV@
+GL_GNULIB_SELECT = @GL_GNULIB_SELECT@
+GL_GNULIB_SEND = @GL_GNULIB_SEND@
+GL_GNULIB_SENDTO = @GL_GNULIB_SENDTO@
+GL_GNULIB_SETENV = @GL_GNULIB_SETENV@
+GL_GNULIB_SETHOSTNAME = @GL_GNULIB_SETHOSTNAME@
+GL_GNULIB_SETLOCALE = @GL_GNULIB_SETLOCALE@
+GL_GNULIB_SETLOCALE_NULL = @GL_GNULIB_SETLOCALE_NULL@
+GL_GNULIB_SETSOCKOPT = @GL_GNULIB_SETSOCKOPT@
+GL_GNULIB_SHUTDOWN = @GL_GNULIB_SHUTDOWN@
+GL_GNULIB_SIGABBREV_NP = @GL_GNULIB_SIGABBREV_NP@
+GL_GNULIB_SIGACTION = @GL_GNULIB_SIGACTION@
+GL_GNULIB_SIGDESCR_NP = @GL_GNULIB_SIGDESCR_NP@
+GL_GNULIB_SIGNAL_H_SIGPIPE = @GL_GNULIB_SIGNAL_H_SIGPIPE@
+GL_GNULIB_SIGPROCMASK = @GL_GNULIB_SIGPROCMASK@
+GL_GNULIB_SLEEP = @GL_GNULIB_SLEEP@
+GL_GNULIB_SNPRINTF = @GL_GNULIB_SNPRINTF@
+GL_GNULIB_SOCKET = @GL_GNULIB_SOCKET@
+GL_GNULIB_SPRINTF_POSIX = @GL_GNULIB_SPRINTF_POSIX@
+GL_GNULIB_STAT = @GL_GNULIB_STAT@
+GL_GNULIB_STDIO_H_NONBLOCKING = @GL_GNULIB_STDIO_H_NONBLOCKING@
+GL_GNULIB_STDIO_H_SIGPIPE = @GL_GNULIB_STDIO_H_SIGPIPE@
+GL_GNULIB_STPCPY = @GL_GNULIB_STPCPY@
+GL_GNULIB_STPNCPY = @GL_GNULIB_STPNCPY@
+GL_GNULIB_STRCASESTR = @GL_GNULIB_STRCASESTR@
+GL_GNULIB_STRCHRNUL = @GL_GNULIB_STRCHRNUL@
+GL_GNULIB_STRDUP = @GL_GNULIB_STRDUP@
+GL_GNULIB_STRERROR = @GL_GNULIB_STRERROR@
+GL_GNULIB_STRERRORNAME_NP = @GL_GNULIB_STRERRORNAME_NP@
+GL_GNULIB_STRERROR_R = @GL_GNULIB_STRERROR_R@
+GL_GNULIB_STRFTIME = @GL_GNULIB_STRFTIME@
+GL_GNULIB_STRNCAT = @GL_GNULIB_STRNCAT@
+GL_GNULIB_STRNDUP = @GL_GNULIB_STRNDUP@
+GL_GNULIB_STRNLEN = @GL_GNULIB_STRNLEN@
+GL_GNULIB_STRPBRK = @GL_GNULIB_STRPBRK@
+GL_GNULIB_STRPTIME = @GL_GNULIB_STRPTIME@
+GL_GNULIB_STRSEP = @GL_GNULIB_STRSEP@
+GL_GNULIB_STRSIGNAL = @GL_GNULIB_STRSIGNAL@
+GL_GNULIB_STRSTR = @GL_GNULIB_STRSTR@
+GL_GNULIB_STRTOD = @GL_GNULIB_STRTOD@
+GL_GNULIB_STRTOIMAX = @GL_GNULIB_STRTOIMAX@
+GL_GNULIB_STRTOK_R = @GL_GNULIB_STRTOK_R@
+GL_GNULIB_STRTOL = @GL_GNULIB_STRTOL@
+GL_GNULIB_STRTOLD = @GL_GNULIB_STRTOLD@
+GL_GNULIB_STRTOLL = @GL_GNULIB_STRTOLL@
+GL_GNULIB_STRTOUL = @GL_GNULIB_STRTOUL@
+GL_GNULIB_STRTOULL = @GL_GNULIB_STRTOULL@
+GL_GNULIB_STRTOUMAX = @GL_GNULIB_STRTOUMAX@
+GL_GNULIB_STRVERSCMP = @GL_GNULIB_STRVERSCMP@
+GL_GNULIB_SYMLINK = @GL_GNULIB_SYMLINK@
+GL_GNULIB_SYMLINKAT = @GL_GNULIB_SYMLINKAT@
+GL_GNULIB_SYSTEM_POSIX = @GL_GNULIB_SYSTEM_POSIX@
+GL_GNULIB_TIMEGM = @GL_GNULIB_TIMEGM@
+GL_GNULIB_TIMESPEC_GET = @GL_GNULIB_TIMESPEC_GET@
+GL_GNULIB_TIME_R = @GL_GNULIB_TIME_R@
+GL_GNULIB_TIME_RZ = @GL_GNULIB_TIME_RZ@
+GL_GNULIB_TMPFILE = @GL_GNULIB_TMPFILE@
+GL_GNULIB_TOWCTRANS = @GL_GNULIB_TOWCTRANS@
+GL_GNULIB_TRUNCATE = @GL_GNULIB_TRUNCATE@
+GL_GNULIB_TTYNAME_R = @GL_GNULIB_TTYNAME_R@
+GL_GNULIB_TZSET = @GL_GNULIB_TZSET@
+GL_GNULIB_UNISTD_H_GETOPT = @GL_GNULIB_UNISTD_H_GETOPT@
+GL_GNULIB_UNISTD_H_NONBLOCKING = @GL_GNULIB_UNISTD_H_NONBLOCKING@
+GL_GNULIB_UNISTD_H_SIGPIPE = @GL_GNULIB_UNISTD_H_SIGPIPE@
+GL_GNULIB_UNLINK = @GL_GNULIB_UNLINK@
+GL_GNULIB_UNLINKAT = @GL_GNULIB_UNLINKAT@
+GL_GNULIB_UNLOCKPT = @GL_GNULIB_UNLOCKPT@
+GL_GNULIB_UNSETENV = @GL_GNULIB_UNSETENV@
+GL_GNULIB_USLEEP = @GL_GNULIB_USLEEP@
+GL_GNULIB_UTIMENSAT = @GL_GNULIB_UTIMENSAT@
+GL_GNULIB_VASPRINTF = @GL_GNULIB_VASPRINTF@
+GL_GNULIB_VDPRINTF = @GL_GNULIB_VDPRINTF@
+GL_GNULIB_VFPRINTF = @GL_GNULIB_VFPRINTF@
+GL_GNULIB_VFPRINTF_POSIX = @GL_GNULIB_VFPRINTF_POSIX@
+GL_GNULIB_VFSCANF = @GL_GNULIB_VFSCANF@
+GL_GNULIB_VPRINTF = @GL_GNULIB_VPRINTF@
+GL_GNULIB_VPRINTF_POSIX = @GL_GNULIB_VPRINTF_POSIX@
+GL_GNULIB_VSCANF = @GL_GNULIB_VSCANF@
+GL_GNULIB_VSNPRINTF = @GL_GNULIB_VSNPRINTF@
+GL_GNULIB_VSPRINTF_POSIX = @GL_GNULIB_VSPRINTF_POSIX@
+GL_GNULIB_WCPCPY = @GL_GNULIB_WCPCPY@
+GL_GNULIB_WCPNCPY = @GL_GNULIB_WCPNCPY@
+GL_GNULIB_WCRTOMB = @GL_GNULIB_WCRTOMB@
+GL_GNULIB_WCSCASECMP = @GL_GNULIB_WCSCASECMP@
+GL_GNULIB_WCSCAT = @GL_GNULIB_WCSCAT@
+GL_GNULIB_WCSCHR = @GL_GNULIB_WCSCHR@
+GL_GNULIB_WCSCMP = @GL_GNULIB_WCSCMP@
+GL_GNULIB_WCSCOLL = @GL_GNULIB_WCSCOLL@
+GL_GNULIB_WCSCPY = @GL_GNULIB_WCSCPY@
+GL_GNULIB_WCSCSPN = @GL_GNULIB_WCSCSPN@
+GL_GNULIB_WCSDUP = @GL_GNULIB_WCSDUP@
+GL_GNULIB_WCSFTIME = @GL_GNULIB_WCSFTIME@
+GL_GNULIB_WCSLEN = @GL_GNULIB_WCSLEN@
+GL_GNULIB_WCSNCASECMP = @GL_GNULIB_WCSNCASECMP@
+GL_GNULIB_WCSNCAT = @GL_GNULIB_WCSNCAT@
+GL_GNULIB_WCSNCMP = @GL_GNULIB_WCSNCMP@
+GL_GNULIB_WCSNCPY = @GL_GNULIB_WCSNCPY@
+GL_GNULIB_WCSNLEN = @GL_GNULIB_WCSNLEN@
+GL_GNULIB_WCSNRTOMBS = @GL_GNULIB_WCSNRTOMBS@
+GL_GNULIB_WCSPBRK = @GL_GNULIB_WCSPBRK@
+GL_GNULIB_WCSRCHR = @GL_GNULIB_WCSRCHR@
+GL_GNULIB_WCSRTOMBS = @GL_GNULIB_WCSRTOMBS@
+GL_GNULIB_WCSSPN = @GL_GNULIB_WCSSPN@
+GL_GNULIB_WCSSTR = @GL_GNULIB_WCSSTR@
+GL_GNULIB_WCSTOK = @GL_GNULIB_WCSTOK@
+GL_GNULIB_WCSWIDTH = @GL_GNULIB_WCSWIDTH@
+GL_GNULIB_WCSXFRM = @GL_GNULIB_WCSXFRM@
+GL_GNULIB_WCTOB = @GL_GNULIB_WCTOB@
+GL_GNULIB_WCTOMB = @GL_GNULIB_WCTOMB@
+GL_GNULIB_WCTRANS = @GL_GNULIB_WCTRANS@
+GL_GNULIB_WCTYPE = @GL_GNULIB_WCTYPE@
+GL_GNULIB_WCWIDTH = @GL_GNULIB_WCWIDTH@
+GL_GNULIB_WMEMCHR = @GL_GNULIB_WMEMCHR@
+GL_GNULIB_WMEMCMP = @GL_GNULIB_WMEMCMP@
+GL_GNULIB_WMEMCPY = @GL_GNULIB_WMEMCPY@
+GL_GNULIB_WMEMMOVE = @GL_GNULIB_WMEMMOVE@
+GL_GNULIB_WMEMPCPY = @GL_GNULIB_WMEMPCPY@
+GL_GNULIB_WMEMSET = @GL_GNULIB_WMEMSET@
+GL_GNULIB_WRITE = @GL_GNULIB_WRITE@
+GL_GNULIB__EXIT = @GL_GNULIB__EXIT@
+GMSGFMT = @GMSGFMT@
+GMSGFMT_015 = @GMSGFMT_015@
+GNULIBHEADERS_OVERRIDE_WINT_T = @GNULIBHEADERS_OVERRIDE_WINT_T@
+GNULIB_GETTIMEOFDAY = @GNULIB_GETTIMEOFDAY@
+GNULIB_TEST_WARN_CFLAGS = @GNULIB_TEST_WARN_CFLAGS@
+GNULIB_WARN_CFLAGS = @GNULIB_WARN_CFLAGS@
+GREP = @GREP@
+HAVE_ACCEPT4 = @HAVE_ACCEPT4@
+HAVE_ALIGNED_ALLOC = @HAVE_ALIGNED_ALLOC@
+HAVE_ALLOCA_H = @HAVE_ALLOCA_H@
+HAVE_ALPHASORT = @HAVE_ALPHASORT@
+HAVE_ARPA_INET_H = @HAVE_ARPA_INET_H@
+HAVE_ATOLL = @HAVE_ATOLL@
+HAVE_BTOWC = @HAVE_BTOWC@
+HAVE_C99_STDINT_H = @HAVE_C99_STDINT_H@
+HAVE_CANONICALIZE_FILE_NAME = @HAVE_CANONICALIZE_FILE_NAME@
+HAVE_CHOWN = @HAVE_CHOWN@
+HAVE_CLOSEDIR = @HAVE_CLOSEDIR@
+HAVE_COPY_FILE_RANGE = @HAVE_COPY_FILE_RANGE@
+HAVE_CRTDEFS_H = @HAVE_CRTDEFS_H@
+HAVE_DECL_DIRFD = @HAVE_DECL_DIRFD@
+HAVE_DECL_ECVT = @HAVE_DECL_ECVT@
+HAVE_DECL_ENVIRON = @HAVE_DECL_ENVIRON@
+HAVE_DECL_EXECVPE = @HAVE_DECL_EXECVPE@
+HAVE_DECL_FCHDIR = @HAVE_DECL_FCHDIR@
+HAVE_DECL_FCLOSEALL = @HAVE_DECL_FCLOSEALL@
+HAVE_DECL_FCVT = @HAVE_DECL_FCVT@
+HAVE_DECL_FDATASYNC = @HAVE_DECL_FDATASYNC@
+HAVE_DECL_FDOPENDIR = @HAVE_DECL_FDOPENDIR@
+HAVE_DECL_FPURGE = @HAVE_DECL_FPURGE@
+HAVE_DECL_FSEEKO = @HAVE_DECL_FSEEKO@
+HAVE_DECL_FTELLO = @HAVE_DECL_FTELLO@
+HAVE_DECL_GCVT = @HAVE_DECL_GCVT@
+HAVE_DECL_GETDELIM = @HAVE_DECL_GETDELIM@
+HAVE_DECL_GETDOMAINNAME = @HAVE_DECL_GETDOMAINNAME@
+HAVE_DECL_GETLINE = @HAVE_DECL_GETLINE@
+HAVE_DECL_GETLOADAVG = @HAVE_DECL_GETLOADAVG@
+HAVE_DECL_GETLOGIN = @HAVE_DECL_GETLOGIN@
+HAVE_DECL_GETLOGIN_R = @HAVE_DECL_GETLOGIN_R@
+HAVE_DECL_GETPAGESIZE = @HAVE_DECL_GETPAGESIZE@
+HAVE_DECL_GETUSERSHELL = @HAVE_DECL_GETUSERSHELL@
+HAVE_DECL_IMAXABS = @HAVE_DECL_IMAXABS@
+HAVE_DECL_IMAXDIV = @HAVE_DECL_IMAXDIV@
+HAVE_DECL_INET_NTOP = @HAVE_DECL_INET_NTOP@
+HAVE_DECL_INET_PTON = @HAVE_DECL_INET_PTON@
+HAVE_DECL_INITSTATE = @HAVE_DECL_INITSTATE@
+HAVE_DECL_LOCALTIME_R = @HAVE_DECL_LOCALTIME_R@
+HAVE_DECL_MEMMEM = @HAVE_DECL_MEMMEM@
+HAVE_DECL_MEMRCHR = @HAVE_DECL_MEMRCHR@
+HAVE_DECL_OBSTACK_PRINTF = @HAVE_DECL_OBSTACK_PRINTF@
+HAVE_DECL_SETENV = @HAVE_DECL_SETENV@
+HAVE_DECL_SETHOSTNAME = @HAVE_DECL_SETHOSTNAME@
+HAVE_DECL_SETSTATE = @HAVE_DECL_SETSTATE@
+HAVE_DECL_SNPRINTF = @HAVE_DECL_SNPRINTF@
+HAVE_DECL_STRDUP = @HAVE_DECL_STRDUP@
+HAVE_DECL_STRERROR_R = @HAVE_DECL_STRERROR_R@
+HAVE_DECL_STRNDUP = @HAVE_DECL_STRNDUP@
+HAVE_DECL_STRNLEN = @HAVE_DECL_STRNLEN@
+HAVE_DECL_STRSIGNAL = @HAVE_DECL_STRSIGNAL@
+HAVE_DECL_STRTOIMAX = @HAVE_DECL_STRTOIMAX@
+HAVE_DECL_STRTOK_R = @HAVE_DECL_STRTOK_R@
+HAVE_DECL_STRTOUMAX = @HAVE_DECL_STRTOUMAX@
+HAVE_DECL_TRUNCATE = @HAVE_DECL_TRUNCATE@
+HAVE_DECL_TTYNAME_R = @HAVE_DECL_TTYNAME_R@
+HAVE_DECL_UNSETENV = @HAVE_DECL_UNSETENV@
+HAVE_DECL_VSNPRINTF = @HAVE_DECL_VSNPRINTF@
+HAVE_DECL_WCSDUP = @HAVE_DECL_WCSDUP@
+HAVE_DECL_WCTOB = @HAVE_DECL_WCTOB@
+HAVE_DECL_WCWIDTH = @HAVE_DECL_WCWIDTH@
+HAVE_DIRENT_H = @HAVE_DIRENT_H@
+HAVE_DPRINTF = @HAVE_DPRINTF@
+HAVE_DUP3 = @HAVE_DUP3@
+HAVE_DUPLOCALE = @HAVE_DUPLOCALE@
+HAVE_EUIDACCESS = @HAVE_EUIDACCESS@
+HAVE_EXECVPE = @HAVE_EXECVPE@
+HAVE_EXPLICIT_BZERO = @HAVE_EXPLICIT_BZERO@
+HAVE_FACCESSAT = @HAVE_FACCESSAT@
+HAVE_FCHDIR = @HAVE_FCHDIR@
+HAVE_FCHMODAT = @HAVE_FCHMODAT@
+HAVE_FCHOWNAT = @HAVE_FCHOWNAT@
+HAVE_FCNTL = @HAVE_FCNTL@
+HAVE_FDATASYNC = @HAVE_FDATASYNC@
+HAVE_FDOPENDIR = @HAVE_FDOPENDIR@
+HAVE_FEATURES_H = @HAVE_FEATURES_H@
+HAVE_FFSL = @HAVE_FFSL@
+HAVE_FFSLL = @HAVE_FFSLL@
+HAVE_FNMATCH = @HAVE_FNMATCH@
+HAVE_FNMATCH_H = @HAVE_FNMATCH_H@
+HAVE_FREELOCALE = @HAVE_FREELOCALE@
+HAVE_FSEEKO = @HAVE_FSEEKO@
+HAVE_FSTATAT = @HAVE_FSTATAT@
+HAVE_FSYNC = @HAVE_FSYNC@
+HAVE_FTELLO = @HAVE_FTELLO@
+HAVE_FTRUNCATE = @HAVE_FTRUNCATE@
+HAVE_FUTIMENS = @HAVE_FUTIMENS@
+HAVE_GETDTABLESIZE = @HAVE_GETDTABLESIZE@
+HAVE_GETENTROPY = @HAVE_GETENTROPY@
+HAVE_GETGROUPS = @HAVE_GETGROUPS@
+HAVE_GETHOSTNAME = @HAVE_GETHOSTNAME@
+HAVE_GETLOGIN = @HAVE_GETLOGIN@
+HAVE_GETOPT_H = @HAVE_GETOPT_H@
+HAVE_GETPAGESIZE = @HAVE_GETPAGESIZE@
+HAVE_GETPASS = @HAVE_GETPASS@
+HAVE_GETSUBOPT = @HAVE_GETSUBOPT@
+HAVE_GETTIMEOFDAY = @HAVE_GETTIMEOFDAY@
+HAVE_GETUMASK = @HAVE_GETUMASK@
+HAVE_GRANTPT = @HAVE_GRANTPT@
+HAVE_GROUP_MEMBER = @HAVE_GROUP_MEMBER@
+HAVE_IMAXDIV_T = @HAVE_IMAXDIV_T@
+HAVE_INITSTATE = @HAVE_INITSTATE@
+HAVE_INTTYPES_H = @HAVE_INTTYPES_H@
+HAVE_ISBLANK = @HAVE_ISBLANK@
+HAVE_ISWBLANK = @HAVE_ISWBLANK@
+HAVE_ISWCNTRL = @HAVE_ISWCNTRL@
+HAVE_LANGINFO_ALTMON = @HAVE_LANGINFO_ALTMON@
+HAVE_LANGINFO_CODESET = @HAVE_LANGINFO_CODESET@
+HAVE_LANGINFO_ERA = @HAVE_LANGINFO_ERA@
+HAVE_LANGINFO_H = @HAVE_LANGINFO_H@
+HAVE_LANGINFO_T_FMT_AMPM = @HAVE_LANGINFO_T_FMT_AMPM@
+HAVE_LANGINFO_YESEXPR = @HAVE_LANGINFO_YESEXPR@
+HAVE_LCHMOD = @HAVE_LCHMOD@
+HAVE_LCHOWN = @HAVE_LCHOWN@
+HAVE_LIBSIGSEGV = @HAVE_LIBSIGSEGV@
+HAVE_LINK = @HAVE_LINK@
+HAVE_LINKAT = @HAVE_LINKAT@
+HAVE_LSTAT = @HAVE_LSTAT@
+HAVE_MAX_ALIGN_T = @HAVE_MAX_ALIGN_T@
+HAVE_MBRLEN = @HAVE_MBRLEN@
+HAVE_MBRTOWC = @HAVE_MBRTOWC@
+HAVE_MBSINIT = @HAVE_MBSINIT@
+HAVE_MBSLEN = @HAVE_MBSLEN@
+HAVE_MBSNRTOWCS = @HAVE_MBSNRTOWCS@
+HAVE_MBSRTOWCS = @HAVE_MBSRTOWCS@
+HAVE_MBTOWC = @HAVE_MBTOWC@
+HAVE_MEMPCPY = @HAVE_MEMPCPY@
+HAVE_MKDIRAT = @HAVE_MKDIRAT@
+HAVE_MKDTEMP = @HAVE_MKDTEMP@
+HAVE_MKFIFO = @HAVE_MKFIFO@
+HAVE_MKFIFOAT = @HAVE_MKFIFOAT@
+HAVE_MKNOD = @HAVE_MKNOD@
+HAVE_MKNODAT = @HAVE_MKNODAT@
+HAVE_MKOSTEMP = @HAVE_MKOSTEMP@
+HAVE_MKOSTEMPS = @HAVE_MKOSTEMPS@
+HAVE_MKSTEMP = @HAVE_MKSTEMP@
+HAVE_MKSTEMPS = @HAVE_MKSTEMPS@
+HAVE_MSVC_INVALID_PARAMETER_HANDLER = @HAVE_MSVC_INVALID_PARAMETER_HANDLER@
+HAVE_NANOSLEEP = @HAVE_NANOSLEEP@
+HAVE_NETINET_IN_H = @HAVE_NETINET_IN_H@
+HAVE_NEWLOCALE = @HAVE_NEWLOCALE@
+HAVE_NL_LANGINFO = @HAVE_NL_LANGINFO@
+HAVE_OPENAT = @HAVE_OPENAT@
+HAVE_OPENDIR = @HAVE_OPENDIR@
+HAVE_OS_H = @HAVE_OS_H@
+HAVE_PCLOSE = @HAVE_PCLOSE@
+HAVE_PIPE = @HAVE_PIPE@
+HAVE_PIPE2 = @HAVE_PIPE2@
+HAVE_POPEN = @HAVE_POPEN@
+HAVE_POSIX_MEMALIGN = @HAVE_POSIX_MEMALIGN@
+HAVE_POSIX_OPENPT = @HAVE_POSIX_OPENPT@
+HAVE_POSIX_SIGNALBLOCKING = @HAVE_POSIX_SIGNALBLOCKING@
+HAVE_PREAD = @HAVE_PREAD@
+HAVE_PSELECT = @HAVE_PSELECT@
+HAVE_PTHREAD_ATTR_DESTROY = @HAVE_PTHREAD_ATTR_DESTROY@
+HAVE_PTHREAD_ATTR_GETDETACHSTATE = @HAVE_PTHREAD_ATTR_GETDETACHSTATE@
+HAVE_PTHREAD_ATTR_INIT = @HAVE_PTHREAD_ATTR_INIT@
+HAVE_PTHREAD_ATTR_SETDETACHSTATE = @HAVE_PTHREAD_ATTR_SETDETACHSTATE@
+HAVE_PTHREAD_CONDATTR_DESTROY = @HAVE_PTHREAD_CONDATTR_DESTROY@
+HAVE_PTHREAD_CONDATTR_INIT = @HAVE_PTHREAD_CONDATTR_INIT@
+HAVE_PTHREAD_COND_BROADCAST = @HAVE_PTHREAD_COND_BROADCAST@
+HAVE_PTHREAD_COND_DESTROY = @HAVE_PTHREAD_COND_DESTROY@
+HAVE_PTHREAD_COND_INIT = @HAVE_PTHREAD_COND_INIT@
+HAVE_PTHREAD_COND_SIGNAL = @HAVE_PTHREAD_COND_SIGNAL@
+HAVE_PTHREAD_COND_TIMEDWAIT = @HAVE_PTHREAD_COND_TIMEDWAIT@
+HAVE_PTHREAD_COND_WAIT = @HAVE_PTHREAD_COND_WAIT@
+HAVE_PTHREAD_CREATE = @HAVE_PTHREAD_CREATE@
+HAVE_PTHREAD_CREATE_DETACHED = @HAVE_PTHREAD_CREATE_DETACHED@
+HAVE_PTHREAD_DETACH = @HAVE_PTHREAD_DETACH@
+HAVE_PTHREAD_EQUAL = @HAVE_PTHREAD_EQUAL@
+HAVE_PTHREAD_EXIT = @HAVE_PTHREAD_EXIT@
+HAVE_PTHREAD_GETSPECIFIC = @HAVE_PTHREAD_GETSPECIFIC@
+HAVE_PTHREAD_H = @HAVE_PTHREAD_H@
+HAVE_PTHREAD_JOIN = @HAVE_PTHREAD_JOIN@
+HAVE_PTHREAD_KEY_CREATE = @HAVE_PTHREAD_KEY_CREATE@
+HAVE_PTHREAD_KEY_DELETE = @HAVE_PTHREAD_KEY_DELETE@
+HAVE_PTHREAD_MUTEXATTR_DESTROY = @HAVE_PTHREAD_MUTEXATTR_DESTROY@
+HAVE_PTHREAD_MUTEXATTR_GETROBUST = @HAVE_PTHREAD_MUTEXATTR_GETROBUST@
+HAVE_PTHREAD_MUTEXATTR_GETTYPE = @HAVE_PTHREAD_MUTEXATTR_GETTYPE@
+HAVE_PTHREAD_MUTEXATTR_INIT = @HAVE_PTHREAD_MUTEXATTR_INIT@
+HAVE_PTHREAD_MUTEXATTR_SETROBUST = @HAVE_PTHREAD_MUTEXATTR_SETROBUST@
+HAVE_PTHREAD_MUTEXATTR_SETTYPE = @HAVE_PTHREAD_MUTEXATTR_SETTYPE@
+HAVE_PTHREAD_MUTEX_DESTROY = @HAVE_PTHREAD_MUTEX_DESTROY@
+HAVE_PTHREAD_MUTEX_INIT = @HAVE_PTHREAD_MUTEX_INIT@
+HAVE_PTHREAD_MUTEX_LOCK = @HAVE_PTHREAD_MUTEX_LOCK@
+HAVE_PTHREAD_MUTEX_RECURSIVE = @HAVE_PTHREAD_MUTEX_RECURSIVE@
+HAVE_PTHREAD_MUTEX_ROBUST = @HAVE_PTHREAD_MUTEX_ROBUST@
+HAVE_PTHREAD_MUTEX_TIMEDLOCK = @HAVE_PTHREAD_MUTEX_TIMEDLOCK@
+HAVE_PTHREAD_MUTEX_TRYLOCK = @HAVE_PTHREAD_MUTEX_TRYLOCK@
+HAVE_PTHREAD_MUTEX_UNLOCK = @HAVE_PTHREAD_MUTEX_UNLOCK@
+HAVE_PTHREAD_ONCE = @HAVE_PTHREAD_ONCE@
+HAVE_PTHREAD_PROCESS_SHARED = @HAVE_PTHREAD_PROCESS_SHARED@
+HAVE_PTHREAD_RWLOCKATTR_DESTROY = @HAVE_PTHREAD_RWLOCKATTR_DESTROY@
+HAVE_PTHREAD_RWLOCKATTR_INIT = @HAVE_PTHREAD_RWLOCKATTR_INIT@
+HAVE_PTHREAD_RWLOCK_DESTROY = @HAVE_PTHREAD_RWLOCK_DESTROY@
+HAVE_PTHREAD_RWLOCK_INIT = @HAVE_PTHREAD_RWLOCK_INIT@
+HAVE_PTHREAD_RWLOCK_RDLOCK = @HAVE_PTHREAD_RWLOCK_RDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+HAVE_PTHREAD_RWLOCK_TRYRDLOCK = @HAVE_PTHREAD_RWLOCK_TRYRDLOCK@
+HAVE_PTHREAD_RWLOCK_TRYWRLOCK = @HAVE_PTHREAD_RWLOCK_TRYWRLOCK@
+HAVE_PTHREAD_RWLOCK_UNLOCK = @HAVE_PTHREAD_RWLOCK_UNLOCK@
+HAVE_PTHREAD_RWLOCK_WRLOCK = @HAVE_PTHREAD_RWLOCK_WRLOCK@
+HAVE_PTHREAD_SELF = @HAVE_PTHREAD_SELF@
+HAVE_PTHREAD_SETSPECIFIC = @HAVE_PTHREAD_SETSPECIFIC@
+HAVE_PTHREAD_SIGMASK = @HAVE_PTHREAD_SIGMASK@
+HAVE_PTHREAD_SPINLOCK_T = @HAVE_PTHREAD_SPINLOCK_T@
+HAVE_PTHREAD_SPIN_DESTROY = @HAVE_PTHREAD_SPIN_DESTROY@
+HAVE_PTHREAD_SPIN_INIT = @HAVE_PTHREAD_SPIN_INIT@
+HAVE_PTHREAD_SPIN_LOCK = @HAVE_PTHREAD_SPIN_LOCK@
+HAVE_PTHREAD_SPIN_TRYLOCK = @HAVE_PTHREAD_SPIN_TRYLOCK@
+HAVE_PTHREAD_SPIN_UNLOCK = @HAVE_PTHREAD_SPIN_UNLOCK@
+HAVE_PTHREAD_T = @HAVE_PTHREAD_T@
+HAVE_PTSNAME = @HAVE_PTSNAME@
+HAVE_PTSNAME_R = @HAVE_PTSNAME_R@
+HAVE_PWRITE = @HAVE_PWRITE@
+HAVE_QSORT_R = @HAVE_QSORT_R@
+HAVE_RAISE = @HAVE_RAISE@
+HAVE_RANDOM = @HAVE_RANDOM@
+HAVE_RANDOM_H = @HAVE_RANDOM_H@
+HAVE_RANDOM_R = @HAVE_RANDOM_R@
+HAVE_RAWMEMCHR = @HAVE_RAWMEMCHR@
+HAVE_READDIR = @HAVE_READDIR@
+HAVE_READLINK = @HAVE_READLINK@
+HAVE_READLINKAT = @HAVE_READLINKAT@
+HAVE_REALLOCARRAY = @HAVE_REALLOCARRAY@
+HAVE_REALPATH = @HAVE_REALPATH@
+HAVE_RENAMEAT = @HAVE_RENAMEAT@
+HAVE_REWINDDIR = @HAVE_REWINDDIR@
+HAVE_RPMATCH = @HAVE_RPMATCH@
+HAVE_SA_FAMILY_T = @HAVE_SA_FAMILY_T@
+HAVE_SCANDIR = @HAVE_SCANDIR@
+HAVE_SCHED_H = @HAVE_SCHED_H@
+HAVE_SCHED_YIELD = @HAVE_SCHED_YIELD@
+HAVE_SECURE_GETENV = @HAVE_SECURE_GETENV@
+HAVE_SETENV = @HAVE_SETENV@
+HAVE_SETHOSTNAME = @HAVE_SETHOSTNAME@
+HAVE_SETSTATE = @HAVE_SETSTATE@
+HAVE_SIGABBREV_NP = @HAVE_SIGABBREV_NP@
+HAVE_SIGACTION = @HAVE_SIGACTION@
+HAVE_SIGDESCR_NP = @HAVE_SIGDESCR_NP@
+HAVE_SIGHANDLER_T = @HAVE_SIGHANDLER_T@
+HAVE_SIGINFO_T = @HAVE_SIGINFO_T@
+HAVE_SIGNED_SIG_ATOMIC_T = @HAVE_SIGNED_SIG_ATOMIC_T@
+HAVE_SIGNED_WCHAR_T = @HAVE_SIGNED_WCHAR_T@
+HAVE_SIGNED_WINT_T = @HAVE_SIGNED_WINT_T@
+HAVE_SIGSET_T = @HAVE_SIGSET_T@
+HAVE_SLEEP = @HAVE_SLEEP@
+HAVE_STDINT_H = @HAVE_STDINT_H@
+HAVE_STPCPY = @HAVE_STPCPY@
+HAVE_STPNCPY = @HAVE_STPNCPY@
+HAVE_STRCASESTR = @HAVE_STRCASESTR@
+HAVE_STRCHRNUL = @HAVE_STRCHRNUL@
+HAVE_STRERRORNAME_NP = @HAVE_STRERRORNAME_NP@
+HAVE_STRPBRK = @HAVE_STRPBRK@
+HAVE_STRPTIME = @HAVE_STRPTIME@
+HAVE_STRSEP = @HAVE_STRSEP@
+HAVE_STRTOD = @HAVE_STRTOD@
+HAVE_STRTOL = @HAVE_STRTOL@
+HAVE_STRTOLD = @HAVE_STRTOLD@
+HAVE_STRTOLL = @HAVE_STRTOLL@
+HAVE_STRTOUL = @HAVE_STRTOUL@
+HAVE_STRTOULL = @HAVE_STRTOULL@
+HAVE_STRUCT_RANDOM_DATA = @HAVE_STRUCT_RANDOM_DATA@
+HAVE_STRUCT_SCHED_PARAM = @HAVE_STRUCT_SCHED_PARAM@
+HAVE_STRUCT_SIGACTION_SA_SIGACTION = @HAVE_STRUCT_SIGACTION_SA_SIGACTION@
+HAVE_STRUCT_SOCKADDR_STORAGE = @HAVE_STRUCT_SOCKADDR_STORAGE@
+HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = @HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY@
+HAVE_STRUCT_TIMEVAL = @HAVE_STRUCT_TIMEVAL@
+HAVE_STRVERSCMP = @HAVE_STRVERSCMP@
+HAVE_SYMLINK = @HAVE_SYMLINK@
+HAVE_SYMLINKAT = @HAVE_SYMLINKAT@
+HAVE_SYS_BITYPES_H = @HAVE_SYS_BITYPES_H@
+HAVE_SYS_CDEFS_H = @HAVE_SYS_CDEFS_H@
+HAVE_SYS_INTTYPES_H = @HAVE_SYS_INTTYPES_H@
+HAVE_SYS_IOCTL_H = @HAVE_SYS_IOCTL_H@
+HAVE_SYS_LOADAVG_H = @HAVE_SYS_LOADAVG_H@
+HAVE_SYS_PARAM_H = @HAVE_SYS_PARAM_H@
+HAVE_SYS_SELECT_H = @HAVE_SYS_SELECT_H@
+HAVE_SYS_SOCKET_H = @HAVE_SYS_SOCKET_H@
+HAVE_SYS_TIME_H = @HAVE_SYS_TIME_H@
+HAVE_SYS_TYPES_H = @HAVE_SYS_TYPES_H@
+HAVE_SYS_UIO_H = @HAVE_SYS_UIO_H@
+HAVE_TIMEGM = @HAVE_TIMEGM@
+HAVE_TIMESPEC_GET = @HAVE_TIMESPEC_GET@
+HAVE_TIMEZONE_T = @HAVE_TIMEZONE_T@
+HAVE_TYPE_VOLATILE_SIG_ATOMIC_T = @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
+HAVE_UNISTD_H = @HAVE_UNISTD_H@
+HAVE_UNLINKAT = @HAVE_UNLINKAT@
+HAVE_UNLOCKPT = @HAVE_UNLOCKPT@
+HAVE_USLEEP = @HAVE_USLEEP@
+HAVE_UTIMENSAT = @HAVE_UTIMENSAT@
+HAVE_VASPRINTF = @HAVE_VASPRINTF@
+HAVE_VDPRINTF = @HAVE_VDPRINTF@
+HAVE_VISIBILITY = @HAVE_VISIBILITY@
+HAVE_WCHAR_H = @HAVE_WCHAR_H@
+HAVE_WCHAR_T = @HAVE_WCHAR_T@
+HAVE_WCPCPY = @HAVE_WCPCPY@
+HAVE_WCPNCPY = @HAVE_WCPNCPY@
+HAVE_WCRTOMB = @HAVE_WCRTOMB@
+HAVE_WCSCASECMP = @HAVE_WCSCASECMP@
+HAVE_WCSCAT = @HAVE_WCSCAT@
+HAVE_WCSCHR = @HAVE_WCSCHR@
+HAVE_WCSCMP = @HAVE_WCSCMP@
+HAVE_WCSCOLL = @HAVE_WCSCOLL@
+HAVE_WCSCPY = @HAVE_WCSCPY@
+HAVE_WCSCSPN = @HAVE_WCSCSPN@
+HAVE_WCSDUP = @HAVE_WCSDUP@
+HAVE_WCSFTIME = @HAVE_WCSFTIME@
+HAVE_WCSLEN = @HAVE_WCSLEN@
+HAVE_WCSNCASECMP = @HAVE_WCSNCASECMP@
+HAVE_WCSNCAT = @HAVE_WCSNCAT@
+HAVE_WCSNCMP = @HAVE_WCSNCMP@
+HAVE_WCSNCPY = @HAVE_WCSNCPY@
+HAVE_WCSNLEN = @HAVE_WCSNLEN@
+HAVE_WCSNRTOMBS = @HAVE_WCSNRTOMBS@
+HAVE_WCSPBRK = @HAVE_WCSPBRK@
+HAVE_WCSRCHR = @HAVE_WCSRCHR@
+HAVE_WCSRTOMBS = @HAVE_WCSRTOMBS@
+HAVE_WCSSPN = @HAVE_WCSSPN@
+HAVE_WCSSTR = @HAVE_WCSSTR@
+HAVE_WCSTOK = @HAVE_WCSTOK@
+HAVE_WCSWIDTH = @HAVE_WCSWIDTH@
+HAVE_WCSXFRM = @HAVE_WCSXFRM@
+HAVE_WCTRANS_T = @HAVE_WCTRANS_T@
+HAVE_WCTYPE_H = @HAVE_WCTYPE_H@
+HAVE_WCTYPE_T = @HAVE_WCTYPE_T@
+HAVE_WINSOCK2_H = @HAVE_WINSOCK2_H@
+HAVE_WINT_T = @HAVE_WINT_T@
+HAVE_WMEMCHR = @HAVE_WMEMCHR@
+HAVE_WMEMCMP = @HAVE_WMEMCMP@
+HAVE_WMEMCPY = @HAVE_WMEMCPY@
+HAVE_WMEMMOVE = @HAVE_WMEMMOVE@
+HAVE_WMEMPCPY = @HAVE_WMEMPCPY@
+HAVE_WMEMSET = @HAVE_WMEMSET@
+HAVE_WS2TCPIP_H = @HAVE_WS2TCPIP_H@
+HAVE_XLOCALE_H = @HAVE_XLOCALE_H@
+HAVE__BOOL = @HAVE__BOOL@
+HAVE__EXIT = @HAVE__EXIT@
+HOST_CPU = @HOST_CPU@
+HOST_CPU_C_ABI = @HOST_CPU_C_ABI@
+ICONV_CONST = @ICONV_CONST@
+ICONV_H = @ICONV_H@
+INCLUDE_NEXT = @INCLUDE_NEXT@
+INCLUDE_NEXT_AS_FIRST_DIRECTIVE = @INCLUDE_NEXT_AS_FIRST_DIRECTIVE@
+INET_PTON_LIB = @INET_PTON_LIB@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INT32_MAX_LT_INTMAX_MAX = @INT32_MAX_LT_INTMAX_MAX@
+INT64_MAX_EQ_LONG_MAX = @INT64_MAX_EQ_LONG_MAX@
+INTLLIBS = @INTLLIBS@
+INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
+LDFLAGS = @LDFLAGS@
+LIBCSTACK = @LIBCSTACK@
+LIBGREPUTILS_LIBDEPS = @LIBGREPUTILS_LIBDEPS@
+LIBGREPUTILS_LTLIBDEPS = @LIBGREPUTILS_LTLIBDEPS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBMULTITHREAD = @LIBMULTITHREAD@
+LIBOBJS = @LIBOBJS@
+LIBPMULTITHREAD = @LIBPMULTITHREAD@
+LIBPTHREAD = @LIBPTHREAD@
+LIBS = @LIBS@
+LIBSIGSEGV = @LIBSIGSEGV@
+LIBSIGSEGV_PREFIX = @LIBSIGSEGV_PREFIX@
+LIBSOCKET = @LIBSOCKET@
+LIBSTDTHREAD = @LIBSTDTHREAD@
+LIBTESTS_LIBDEPS = @LIBTESTS_LIBDEPS@
+LIBTHREAD = @LIBTHREAD@
+LIBUNISTRING_UNISTR_H = @LIBUNISTRING_UNISTR_H@
+LIBUNISTRING_UNITYPES_H = @LIBUNISTRING_UNITYPES_H@
+LIBUNISTRING_UNIWIDTH_H = @LIBUNISTRING_UNIWIDTH_H@
+LIB_HARD_LOCALE = @LIB_HARD_LOCALE@
+LIB_MBRTOWC = @LIB_MBRTOWC@
+LIB_NANOSLEEP = @LIB_NANOSLEEP@
+LIB_NL_LANGINFO = @LIB_NL_LANGINFO@
+LIB_PTHREAD = @LIB_PTHREAD@
+LIB_PTHREAD_SIGMASK = @LIB_PTHREAD_SIGMASK@
+LIB_SCHED_YIELD = @LIB_SCHED_YIELD@
+LIB_SELECT = @LIB_SELECT@
+LIB_SETLOCALE = @LIB_SETLOCALE@
+LIB_SETLOCALE_NULL = @LIB_SETLOCALE_NULL@
+LIMITS_H = @LIMITS_H@
+LOCALCHARSET_TESTS_ENVIRONMENT = @LOCALCHARSET_TESTS_ENVIRONMENT@
+LOCALENAME_ENHANCE_LOCALE_FUNCS = @LOCALENAME_ENHANCE_LOCALE_FUNCS@
+LOCALE_FR = @LOCALE_FR@
+LOCALE_FR_UTF8 = @LOCALE_FR_UTF8@
+LOCALE_JA = @LOCALE_JA@
+LOCALE_TR_UTF8 = @LOCALE_TR_UTF8@
+LOCALE_ZH_CN = @LOCALE_ZH_CN@
+LTLIBCSTACK = @LTLIBCSTACK@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBMULTITHREAD = @LTLIBMULTITHREAD@
+LTLIBOBJS = @LTLIBOBJS@
+LTLIBSIGSEGV = @LTLIBSIGSEGV@
+LTLIBTHREAD = @LTLIBTHREAD@
+MAKEINFO = @MAKEINFO@
+MKDIR_P = @MKDIR_P@
+MSGFMT = @MSGFMT@
+MSGFMT_015 = @MSGFMT_015@
+MSGMERGE = @MSGMERGE@
+NETINET_IN_H = @NETINET_IN_H@
+NEXT_ARPA_INET_H = @NEXT_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H = @NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_CTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_CTYPE_H@
+NEXT_AS_FIRST_DIRECTIVE_DIRENT_H = @NEXT_AS_FIRST_DIRECTIVE_DIRENT_H@
+NEXT_AS_FIRST_DIRECTIVE_ERRNO_H = @NEXT_AS_FIRST_DIRECTIVE_ERRNO_H@
+NEXT_AS_FIRST_DIRECTIVE_FCNTL_H = @NEXT_AS_FIRST_DIRECTIVE_FCNTL_H@
+NEXT_AS_FIRST_DIRECTIVE_FLOAT_H = @NEXT_AS_FIRST_DIRECTIVE_FLOAT_H@
+NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H = @NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H@
+NEXT_AS_FIRST_DIRECTIVE_GETOPT_H = @NEXT_AS_FIRST_DIRECTIVE_GETOPT_H@
+NEXT_AS_FIRST_DIRECTIVE_ICONV_H = @NEXT_AS_FIRST_DIRECTIVE_ICONV_H@
+NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H = @NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H = @NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H@
+NEXT_AS_FIRST_DIRECTIVE_LIMITS_H = @NEXT_AS_FIRST_DIRECTIVE_LIMITS_H@
+NEXT_AS_FIRST_DIRECTIVE_LOCALE_H = @NEXT_AS_FIRST_DIRECTIVE_LOCALE_H@
+NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H = @NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H@
+NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H = @NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H@
+NEXT_AS_FIRST_DIRECTIVE_SCHED_H = @NEXT_AS_FIRST_DIRECTIVE_SCHED_H@
+NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H = @NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H@
+NEXT_AS_FIRST_DIRECTIVE_STDARG_H = @NEXT_AS_FIRST_DIRECTIVE_STDARG_H@
+NEXT_AS_FIRST_DIRECTIVE_STDDEF_H = @NEXT_AS_FIRST_DIRECTIVE_STDDEF_H@
+NEXT_AS_FIRST_DIRECTIVE_STDINT_H = @NEXT_AS_FIRST_DIRECTIVE_STDINT_H@
+NEXT_AS_FIRST_DIRECTIVE_STDIO_H = @NEXT_AS_FIRST_DIRECTIVE_STDIO_H@
+NEXT_AS_FIRST_DIRECTIVE_STDLIB_H = @NEXT_AS_FIRST_DIRECTIVE_STDLIB_H@
+NEXT_AS_FIRST_DIRECTIVE_STRING_H = @NEXT_AS_FIRST_DIRECTIVE_STRING_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H@
+NEXT_AS_FIRST_DIRECTIVE_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_UNISTD_H = @NEXT_AS_FIRST_DIRECTIVE_UNISTD_H@
+NEXT_AS_FIRST_DIRECTIVE_WCHAR_H = @NEXT_AS_FIRST_DIRECTIVE_WCHAR_H@
+NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H@
+NEXT_CTYPE_H = @NEXT_CTYPE_H@
+NEXT_DIRENT_H = @NEXT_DIRENT_H@
+NEXT_ERRNO_H = @NEXT_ERRNO_H@
+NEXT_FCNTL_H = @NEXT_FCNTL_H@
+NEXT_FLOAT_H = @NEXT_FLOAT_H@
+NEXT_FNMATCH_H = @NEXT_FNMATCH_H@
+NEXT_GETOPT_H = @NEXT_GETOPT_H@
+NEXT_ICONV_H = @NEXT_ICONV_H@
+NEXT_INTTYPES_H = @NEXT_INTTYPES_H@
+NEXT_LANGINFO_H = @NEXT_LANGINFO_H@
+NEXT_LIMITS_H = @NEXT_LIMITS_H@
+NEXT_LOCALE_H = @NEXT_LOCALE_H@
+NEXT_NETINET_IN_H = @NEXT_NETINET_IN_H@
+NEXT_PTHREAD_H = @NEXT_PTHREAD_H@
+NEXT_SCHED_H = @NEXT_SCHED_H@
+NEXT_SIGNAL_H = @NEXT_SIGNAL_H@
+NEXT_STDARG_H = @NEXT_STDARG_H@
+NEXT_STDDEF_H = @NEXT_STDDEF_H@
+NEXT_STDINT_H = @NEXT_STDINT_H@
+NEXT_STDIO_H = @NEXT_STDIO_H@
+NEXT_STDLIB_H = @NEXT_STDLIB_H@
+NEXT_STRING_H = @NEXT_STRING_H@
+NEXT_SYS_IOCTL_H = @NEXT_SYS_IOCTL_H@
+NEXT_SYS_SELECT_H = @NEXT_SYS_SELECT_H@
+NEXT_SYS_SOCKET_H = @NEXT_SYS_SOCKET_H@
+NEXT_SYS_STAT_H = @NEXT_SYS_STAT_H@
+NEXT_SYS_TIME_H = @NEXT_SYS_TIME_H@
+NEXT_SYS_TYPES_H = @NEXT_SYS_TYPES_H@
+NEXT_SYS_UIO_H = @NEXT_SYS_UIO_H@
+NEXT_TIME_H = @NEXT_TIME_H@
+NEXT_UNISTD_H = @NEXT_UNISTD_H@
+NEXT_WCHAR_H = @NEXT_WCHAR_H@
+NEXT_WCTYPE_H = @NEXT_WCTYPE_H@
+OBJEXT = @OBJEXT@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PCRE_CFLAGS = @PCRE_CFLAGS@
+PCRE_LIBS = @PCRE_LIBS@
+PERL = @PERL@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+POSUB = @POSUB@
+PRAGMA_COLUMNS = @PRAGMA_COLUMNS@
+PRAGMA_SYSTEM_HEADER = @PRAGMA_SYSTEM_HEADER@
+PRIPTR_PREFIX = @PRIPTR_PREFIX@
+PTHREAD_H_DEFINES_STRUCT_TIMESPEC = @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
+PTRDIFF_T_SUFFIX = @PTRDIFF_T_SUFFIX@
+RANLIB = @RANLIB@
+REPLACE_ACCESS = @REPLACE_ACCESS@
+REPLACE_ALIGNED_ALLOC = @REPLACE_ALIGNED_ALLOC@
+REPLACE_BTOWC = @REPLACE_BTOWC@
+REPLACE_CALLOC = @REPLACE_CALLOC@
+REPLACE_CANONICALIZE_FILE_NAME = @REPLACE_CANONICALIZE_FILE_NAME@
+REPLACE_CHOWN = @REPLACE_CHOWN@
+REPLACE_CLOSE = @REPLACE_CLOSE@
+REPLACE_CLOSEDIR = @REPLACE_CLOSEDIR@
+REPLACE_CREAT = @REPLACE_CREAT@
+REPLACE_CTIME = @REPLACE_CTIME@
+REPLACE_DIRFD = @REPLACE_DIRFD@
+REPLACE_DPRINTF = @REPLACE_DPRINTF@
+REPLACE_DUP = @REPLACE_DUP@
+REPLACE_DUP2 = @REPLACE_DUP2@
+REPLACE_DUPLOCALE = @REPLACE_DUPLOCALE@
+REPLACE_EXECL = @REPLACE_EXECL@
+REPLACE_EXECLE = @REPLACE_EXECLE@
+REPLACE_EXECLP = @REPLACE_EXECLP@
+REPLACE_EXECV = @REPLACE_EXECV@
+REPLACE_EXECVE = @REPLACE_EXECVE@
+REPLACE_EXECVP = @REPLACE_EXECVP@
+REPLACE_EXECVPE = @REPLACE_EXECVPE@
+REPLACE_FACCESSAT = @REPLACE_FACCESSAT@
+REPLACE_FCHMODAT = @REPLACE_FCHMODAT@
+REPLACE_FCHOWNAT = @REPLACE_FCHOWNAT@
+REPLACE_FCLOSE = @REPLACE_FCLOSE@
+REPLACE_FCNTL = @REPLACE_FCNTL@
+REPLACE_FDOPEN = @REPLACE_FDOPEN@
+REPLACE_FDOPENDIR = @REPLACE_FDOPENDIR@
+REPLACE_FFLUSH = @REPLACE_FFLUSH@
+REPLACE_FFSLL = @REPLACE_FFSLL@
+REPLACE_FNMATCH = @REPLACE_FNMATCH@
+REPLACE_FOPEN = @REPLACE_FOPEN@
+REPLACE_FPRINTF = @REPLACE_FPRINTF@
+REPLACE_FPURGE = @REPLACE_FPURGE@
+REPLACE_FREE = @REPLACE_FREE@
+REPLACE_FREELOCALE = @REPLACE_FREELOCALE@
+REPLACE_FREOPEN = @REPLACE_FREOPEN@
+REPLACE_FSEEK = @REPLACE_FSEEK@
+REPLACE_FSEEKO = @REPLACE_FSEEKO@
+REPLACE_FSTAT = @REPLACE_FSTAT@
+REPLACE_FSTATAT = @REPLACE_FSTATAT@
+REPLACE_FTELL = @REPLACE_FTELL@
+REPLACE_FTELLO = @REPLACE_FTELLO@
+REPLACE_FTRUNCATE = @REPLACE_FTRUNCATE@
+REPLACE_FUTIMENS = @REPLACE_FUTIMENS@
+REPLACE_GETCWD = @REPLACE_GETCWD@
+REPLACE_GETDELIM = @REPLACE_GETDELIM@
+REPLACE_GETDOMAINNAME = @REPLACE_GETDOMAINNAME@
+REPLACE_GETDTABLESIZE = @REPLACE_GETDTABLESIZE@
+REPLACE_GETGROUPS = @REPLACE_GETGROUPS@
+REPLACE_GETLINE = @REPLACE_GETLINE@
+REPLACE_GETLOGIN_R = @REPLACE_GETLOGIN_R@
+REPLACE_GETPAGESIZE = @REPLACE_GETPAGESIZE@
+REPLACE_GETPASS = @REPLACE_GETPASS@
+REPLACE_GETTIMEOFDAY = @REPLACE_GETTIMEOFDAY@
+REPLACE_GMTIME = @REPLACE_GMTIME@
+REPLACE_ICONV = @REPLACE_ICONV@
+REPLACE_ICONV_OPEN = @REPLACE_ICONV_OPEN@
+REPLACE_ICONV_UTF = @REPLACE_ICONV_UTF@
+REPLACE_INET_NTOP = @REPLACE_INET_NTOP@
+REPLACE_INET_PTON = @REPLACE_INET_PTON@
+REPLACE_INITSTATE = @REPLACE_INITSTATE@
+REPLACE_IOCTL = @REPLACE_IOCTL@
+REPLACE_ISATTY = @REPLACE_ISATTY@
+REPLACE_ISWBLANK = @REPLACE_ISWBLANK@
+REPLACE_ISWCNTRL = @REPLACE_ISWCNTRL@
+REPLACE_ISWDIGIT = @REPLACE_ISWDIGIT@
+REPLACE_ISWXDIGIT = @REPLACE_ISWXDIGIT@
+REPLACE_ITOLD = @REPLACE_ITOLD@
+REPLACE_LCHOWN = @REPLACE_LCHOWN@
+REPLACE_LINK = @REPLACE_LINK@
+REPLACE_LINKAT = @REPLACE_LINKAT@
+REPLACE_LOCALECONV = @REPLACE_LOCALECONV@
+REPLACE_LOCALTIME = @REPLACE_LOCALTIME@
+REPLACE_LOCALTIME_R = @REPLACE_LOCALTIME_R@
+REPLACE_LSEEK = @REPLACE_LSEEK@
+REPLACE_LSTAT = @REPLACE_LSTAT@
+REPLACE_MALLOC = @REPLACE_MALLOC@
+REPLACE_MBRLEN = @REPLACE_MBRLEN@
+REPLACE_MBRTOWC = @REPLACE_MBRTOWC@
+REPLACE_MBSINIT = @REPLACE_MBSINIT@
+REPLACE_MBSNRTOWCS = @REPLACE_MBSNRTOWCS@
+REPLACE_MBSRTOWCS = @REPLACE_MBSRTOWCS@
+REPLACE_MBSTATE_T = @REPLACE_MBSTATE_T@
+REPLACE_MBTOWC = @REPLACE_MBTOWC@
+REPLACE_MEMCHR = @REPLACE_MEMCHR@
+REPLACE_MEMMEM = @REPLACE_MEMMEM@
+REPLACE_MKDIR = @REPLACE_MKDIR@
+REPLACE_MKFIFO = @REPLACE_MKFIFO@
+REPLACE_MKFIFOAT = @REPLACE_MKFIFOAT@
+REPLACE_MKNOD = @REPLACE_MKNOD@
+REPLACE_MKNODAT = @REPLACE_MKNODAT@
+REPLACE_MKSTEMP = @REPLACE_MKSTEMP@
+REPLACE_MKTIME = @REPLACE_MKTIME@
+REPLACE_NANOSLEEP = @REPLACE_NANOSLEEP@
+REPLACE_NEWLOCALE = @REPLACE_NEWLOCALE@
+REPLACE_NL_LANGINFO = @REPLACE_NL_LANGINFO@
+REPLACE_NULL = @REPLACE_NULL@
+REPLACE_OBSTACK_PRINTF = @REPLACE_OBSTACK_PRINTF@
+REPLACE_OPEN = @REPLACE_OPEN@
+REPLACE_OPENAT = @REPLACE_OPENAT@
+REPLACE_OPENDIR = @REPLACE_OPENDIR@
+REPLACE_PERROR = @REPLACE_PERROR@
+REPLACE_POPEN = @REPLACE_POPEN@
+REPLACE_POSIX_MEMALIGN = @REPLACE_POSIX_MEMALIGN@
+REPLACE_PREAD = @REPLACE_PREAD@
+REPLACE_PRINTF = @REPLACE_PRINTF@
+REPLACE_PSELECT = @REPLACE_PSELECT@
+REPLACE_PTHREAD_ATTR_DESTROY = @REPLACE_PTHREAD_ATTR_DESTROY@
+REPLACE_PTHREAD_ATTR_GETDETACHSTATE = @REPLACE_PTHREAD_ATTR_GETDETACHSTATE@
+REPLACE_PTHREAD_ATTR_INIT = @REPLACE_PTHREAD_ATTR_INIT@
+REPLACE_PTHREAD_ATTR_SETDETACHSTATE = @REPLACE_PTHREAD_ATTR_SETDETACHSTATE@
+REPLACE_PTHREAD_CONDATTR_DESTROY = @REPLACE_PTHREAD_CONDATTR_DESTROY@
+REPLACE_PTHREAD_CONDATTR_INIT = @REPLACE_PTHREAD_CONDATTR_INIT@
+REPLACE_PTHREAD_COND_BROADCAST = @REPLACE_PTHREAD_COND_BROADCAST@
+REPLACE_PTHREAD_COND_DESTROY = @REPLACE_PTHREAD_COND_DESTROY@
+REPLACE_PTHREAD_COND_INIT = @REPLACE_PTHREAD_COND_INIT@
+REPLACE_PTHREAD_COND_SIGNAL = @REPLACE_PTHREAD_COND_SIGNAL@
+REPLACE_PTHREAD_COND_TIMEDWAIT = @REPLACE_PTHREAD_COND_TIMEDWAIT@
+REPLACE_PTHREAD_COND_WAIT = @REPLACE_PTHREAD_COND_WAIT@
+REPLACE_PTHREAD_CREATE = @REPLACE_PTHREAD_CREATE@
+REPLACE_PTHREAD_DETACH = @REPLACE_PTHREAD_DETACH@
+REPLACE_PTHREAD_EQUAL = @REPLACE_PTHREAD_EQUAL@
+REPLACE_PTHREAD_EXIT = @REPLACE_PTHREAD_EXIT@
+REPLACE_PTHREAD_GETSPECIFIC = @REPLACE_PTHREAD_GETSPECIFIC@
+REPLACE_PTHREAD_JOIN = @REPLACE_PTHREAD_JOIN@
+REPLACE_PTHREAD_KEY_CREATE = @REPLACE_PTHREAD_KEY_CREATE@
+REPLACE_PTHREAD_KEY_DELETE = @REPLACE_PTHREAD_KEY_DELETE@
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+# Process this file with automake to create Makefile.in
+#
+# Copyright 1997-1998, 2005-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
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+  README		\
+  README-alpha		\
+  THANKS.in		\
+  TODO			\
+  cfg.mk		\
+  thanks-gen
+
+gen_start_date = 2009-11-27
+
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+# otherwise we may get into trouble with distinct strings that the
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+# (1) if the variable is set in 'config.status', edit 'config.status'
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+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$new_top_distdir" \
+	        distdir="$$new_distdir" \
+		am__remove_distdir=: \
+		am__skip_length_check=: \
+		am__skip_mode_fix=: \
+	        distdir) \
+	      || exit 1; \
+	  fi; \
+	done
+	$(MAKE) $(AM_MAKEFLAGS) \
+	  top_distdir="$(top_distdir)" distdir="$(distdir)" \
+	  dist-hook
+	-test -n "$(am__skip_mode_fix)" \
+	|| find "$(distdir)" -type d ! -perm -755 \
+		-exec chmod u+rwx,go+rx {} \; -o \
+	  ! -type d ! -perm -444 -links 1 -exec chmod a+r {} \; -o \
+	  ! -type d ! -perm -400 -exec chmod a+r {} \; -o \
+	  ! -type d ! -perm -444 -exec $(install_sh) -c -m a+r {} {} \; \
+	|| chmod -R a+r "$(distdir)"
+dist-gzip: distdir
+	tardir=$(distdir) && $(am__tar) | eval GZIP= gzip $(GZIP_ENV) -c >$(distdir).tar.gz
+	$(am__post_remove_distdir)
+
+dist-bzip2: distdir
+	tardir=$(distdir) && $(am__tar) | BZIP2=$${BZIP2--9} bzip2 -c >$(distdir).tar.bz2
+	$(am__post_remove_distdir)
+
+dist-lzip: distdir
+	tardir=$(distdir) && $(am__tar) | lzip -c $${LZIP_OPT--9} >$(distdir).tar.lz
+	$(am__post_remove_distdir)
+dist-xz: distdir
+	tardir=$(distdir) && $(am__tar) | XZ_OPT=$${XZ_OPT--e} xz -c >$(distdir).tar.xz
+	$(am__post_remove_distdir)
+
+dist-zstd: distdir
+	tardir=$(distdir) && $(am__tar) | zstd -c $${ZSTD_CLEVEL-$${ZSTD_OPT--19}} >$(distdir).tar.zst
+	$(am__post_remove_distdir)
+
+dist-tarZ: distdir
+	@echo WARNING: "Support for distribution archives compressed with" \
+		       "legacy program 'compress' is deprecated." >&2
+	@echo WARNING: "It will be removed altogether in Automake 2.0" >&2
+	tardir=$(distdir) && $(am__tar) | compress -c >$(distdir).tar.Z
+	$(am__post_remove_distdir)
+
+dist-shar: distdir
+	@echo WARNING: "Support for shar distribution archives is" \
+	               "deprecated." >&2
+	@echo WARNING: "It will be removed altogether in Automake 2.0" >&2
+	shar $(distdir) | eval GZIP= gzip $(GZIP_ENV) -c >$(distdir).shar.gz
+	$(am__post_remove_distdir)
+
+dist-zip: distdir
+	-rm -f $(distdir).zip
+	zip -rq $(distdir).zip $(distdir)
+	$(am__post_remove_distdir)
+
+dist dist-all:
+	$(MAKE) $(AM_MAKEFLAGS) $(DIST_TARGETS) am__post_remove_distdir='@:'
+	$(am__post_remove_distdir)
+
+# This target untars the dist file and tries a VPATH configuration.  Then
+# it guarantees that the distribution is self-contained by making another
+# tarfile.
+distcheck: dist
+	case '$(DIST_ARCHIVES)' in \
+	*.tar.gz*) \
+	  eval GZIP= gzip $(GZIP_ENV) -dc $(distdir).tar.gz | $(am__untar) ;;\
+	*.tar.bz2*) \
+	  bzip2 -dc $(distdir).tar.bz2 | $(am__untar) ;;\
+	*.tar.lz*) \
+	  lzip -dc $(distdir).tar.lz | $(am__untar) ;;\
+	*.tar.xz*) \
+	  xz -dc $(distdir).tar.xz | $(am__untar) ;;\
+	*.tar.Z*) \
+	  uncompress -c $(distdir).tar.Z | $(am__untar) ;;\
+	*.shar.gz*) \
+	  eval GZIP= gzip $(GZIP_ENV) -dc $(distdir).shar.gz | unshar ;;\
+	*.zip*) \
+	  unzip $(distdir).zip ;;\
+	*.tar.zst*) \
+	  zstd -dc $(distdir).tar.zst | $(am__untar) ;;\
+	esac
+	chmod -R a-w $(distdir)
+	chmod u+w $(distdir)
+	mkdir $(distdir)/_build $(distdir)/_build/sub $(distdir)/_inst
+	chmod a-w $(distdir)
+	test -d $(distdir)/_build || exit 0; \
+	dc_install_base=`$(am__cd) $(distdir)/_inst && pwd | sed -e 's,^[^:\\/]:[\\/],/,'` \
+	  && dc_destdir="$${TMPDIR-/tmp}/am-dc-$$$$/" \
+	  && am__cwd=`pwd` \
+	  && $(am__cd) $(distdir)/_build/sub \
+	  && ../../configure \
+	    $(AM_DISTCHECK_CONFIGURE_FLAGS) \
+	    $(DISTCHECK_CONFIGURE_FLAGS) \
+	    --srcdir=../.. --prefix="$$dc_install_base" \
+	  && $(MAKE) $(AM_MAKEFLAGS) \
+	  && $(MAKE) $(AM_MAKEFLAGS) $(AM_DISTCHECK_DVI_TARGET) \
+	  && $(MAKE) $(AM_MAKEFLAGS) check \
+	  && $(MAKE) $(AM_MAKEFLAGS) install \
+	  && $(MAKE) $(AM_MAKEFLAGS) installcheck \
+	  && $(MAKE) $(AM_MAKEFLAGS) uninstall \
+	  && $(MAKE) $(AM_MAKEFLAGS) distuninstallcheck_dir="$$dc_install_base" \
+	        distuninstallcheck \
+	  && chmod -R a-w "$$dc_install_base" \
+	  && ({ \
+	       (cd ../.. && umask 077 && mkdir "$$dc_destdir") \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" install \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" uninstall \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" \
+	            distuninstallcheck_dir="$$dc_destdir" distuninstallcheck; \
+	      } || { rm -rf "$$dc_destdir"; exit 1; }) \
+	  && rm -rf "$$dc_destdir" \
+	  && $(MAKE) $(AM_MAKEFLAGS) dist \
+	  && rm -rf $(DIST_ARCHIVES) \
+	  && $(MAKE) $(AM_MAKEFLAGS) distcleancheck \
+	  && cd "$$am__cwd" \
+	  || exit 1
+	$(am__post_remove_distdir)
+	@(echo "$(distdir) archives ready for distribution: "; \
+	  list='$(DIST_ARCHIVES)'; for i in $$list; do echo $$i; done) | \
+	  sed -e 1h -e 1s/./=/g -e 1p -e 1x -e '$$p' -e '$$x'
+distuninstallcheck:
+	@test -n '$(distuninstallcheck_dir)' || { \
+	  echo 'ERROR: trying to run $@ with an empty' \
+	       '$$(distuninstallcheck_dir)' >&2; \
+	  exit 1; \
+	}; \
+	$(am__cd) '$(distuninstallcheck_dir)' || { \
+	  echo 'ERROR: cannot chdir into $(distuninstallcheck_dir)' >&2; \
+	  exit 1; \
+	}; \
+	test `$(am__distuninstallcheck_listfiles) | wc -l` -eq 0 \
+	   || { echo "ERROR: files left after uninstall:" ; \
+	        if test -n "$(DESTDIR)"; then \
+	          echo "  (check DESTDIR support)"; \
+	        fi ; \
+	        $(distuninstallcheck_listfiles) ; \
+	        exit 1; } >&2
+distcleancheck: distclean
+	@if test '$(srcdir)' = . ; then \
+	  echo "ERROR: distcleancheck can only run from a VPATH build" ; \
+	  exit 1 ; \
+	fi
+	@test `$(distcleancheck_listfiles) | wc -l` -eq 0 \
+	  || { echo "ERROR: files left in build directory after distclean:" ; \
+	       $(distcleancheck_listfiles) ; \
+	       exit 1; } >&2
+check-am: all-am
+check: check-recursive
+all-am: Makefile config.h
+installdirs: installdirs-recursive
+installdirs-am:
+install: install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-recursive
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-recursive
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic distclean-hdr distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+html: html-recursive
+
+html-am:
+
+info: info-recursive
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-recursive
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-recursive
+
+install-html-am:
+
+install-info: install-info-recursive
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-recursive
+
+install-pdf-am:
+
+install-ps: install-ps-recursive
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -rf $(top_srcdir)/autom4te.cache
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: $(am__recursive_targets) all install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am \
+	am--refresh check check-am clean clean-cscope clean-generic \
+	cscope cscopelist-am ctags ctags-am dist dist-all dist-bzip2 \
+	dist-gzip dist-hook dist-lzip dist-shar dist-tarZ dist-xz \
+	dist-zip dist-zstd distcheck distclean distclean-generic \
+	distclean-hdr distclean-tags distcleancheck distdir \
+	distuninstallcheck dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	installdirs-am maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-generic pdf pdf-am ps ps-am tags \
+	tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# Shortcut targets to make it easier to run expensive tests.
+.PHONY: check-expensive
+check-expensive:
+	$(MAKE) check RUN_EXPENSIVE_TESTS=yes
+.PHONY: check-very-expensive
+check-very-expensive: check-expensive
+
+# Run syntax-check rules before creating a distribution tarball.
+.PHONY: run-syntax-check
+run-syntax-check: all
+	$(AM_V_GEN)test ! -d .git || $(MAKE) syntax-check
+
+# Arrange so that .tarball-version appears only in the distribution
+# tarball, and never in a checked-out repository.
+dist-hook: gen-ChangeLog run-syntax-check
+	$(AM_V_GEN)echo $(VERSION) > $(distdir)/.tarball-version
+.PHONY: gen-ChangeLog
+gen-ChangeLog:
+	$(AM_V_GEN)if test -d .git; then				\
+	  log_fix="$(srcdir)/build-aux/git-log-fix";			\
+	  test -e "$$log_fix"						\
+	    && amend_git_log="--amend=$$log_fix"			\
+	    || amend_git_log=;						\
+	  $(top_srcdir)/build-aux/gitlog-to-changelog			\
+	    $$amend_git_log --since=$(gen_start_date) > $(distdir)/cl-t && \
+	    { rm -f $(distdir)/ChangeLog &&				\
+	      mv $(distdir)/cl-t $(distdir)/ChangeLog; }		\
+	fi
+
+THANKS: THANKS.in Makefile.am .mailmap thanks-gen
+	$(AM_V_GEN)rm -f $@-t $@;					\
+	{								\
+	  $(prologue); echo;						\
+	  { perl -ne '/^$$/.../^$$/ and !/^$$/ and s/  +/\0/ and print'	\
+	      $(srcdir)/THANKS.in;					\
+	    git log --pretty=format:'%aN%x00%aE'			\
+	      | $(ASSORT) -u;						\
+	  } | $(srcdir)/thanks-gen					\
+	    | LC_ALL=en_US.UTF-8 sort -k1,1;				\
+	  echo;								\
+	  printf ';; %s\n' 'Local Variables:' 'coding: utf-8' End:;	\
+	} > $@-t && chmod a-w $@-t && mv $@-t $@
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/grep/Makefile.kmk b/src/grep/Makefile.kmk
new file mode 100644
index 0000000..4449e61
--- /dev/null
+++ b/src/grep/Makefile.kmk
@@ -0,0 +1,267 @@
+# $Id: Makefile.kmk 3548 2022-01-29 02:41:10Z bird $
+## @file
+# Sub-Makefile for kmk_grep.
+#
+
+#
+# Copyright (c) 2006-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ../..
+include $(KBUILD_PATH)/subheader.kmk
+
+#
+# Grep uses C99 syntax, which isn't supported by older microsoft compilers,
+# so select a newer one if needed and do static linking.
+#
+TEMPLATE_BINC99 = Accept C99 syntax
+TEMPLATE_BINC99_EXTENDS = BIN
+if1of ($(KBUILD_TARGET), win nt)
+ ifeq ($(TEMPLATE_BIN_TOOL),VCC100)
+  TEMPLATE_BINC99_TOOL            = VCC142
+  TEMPLATE_BINC99_TOOL.x86        = VCC142X86
+  TEMPLATE_BINC99_TOOL.amd64      = VCC142AMD64
+  TEMPLATE_BINC99_SDKS            = WINSDK10-UM WINSDK10-UCRT-STATIC
+  TEMPLATE_BINC99_CFLAGS          = $(filter-out -MD,$(TEMPLATE_BIN_CFLAGS)) -MT -Gy -Gw -Zc:inline
+  TEMPLATE_BINC99_LDFLAGS         = $(TEMPLATE_BIN_LDFLAGS) /OPT:REF
+  TEMPLATE_BINC99_LIBS            = \
+  	$(PATH_TOOL_$(TEMPLATE_BINC99_TOOL)_LIB.$(KBUILD_TARGET_ARCH))/vcruntime.lib \
+  	$(PATH_TOOL_$(TEMPLATE_BINC99_TOOL)_LIB.$(KBUILD_TARGET_ARCH))/oldnames.lib \
+  	$(PATH_TOOL_$(TEMPLATE_BINC99_TOOL)_LIB.$(KBUILD_TARGET_ARCH))/libcmt.lib \
+  	$(PATH_TOOL_$(TEMPLATE_BINC99_TOOL)_LIB.$(KBUILD_TARGET_ARCH))/libcpmt.lib
+  TEMPLATE_BINC99_LIBS.x86        = $(NO_SUCH_VARIABLE)
+  TEMPLATE_BINC99_LIBS.amd64      = $(NO_SUCH_VARIABLE)
+ endif
+endif
+
+#
+# kmk_grep
+#
+PROGRAMS += kmk_grep
+kmk_grep_TEMPLATE = BINC99
+kmk_grep_DEFS = \
+	KMK_GREP \
+	HAVE_CONFIG_H
+kmk_grep_CFLAGS.solaris = -std=gnu99
+kmk_grep_CFLAGS.win += -wd4018 # grep.c(797): warning C4018: '<': signed/unsigned mismatch [lots of size_t / ptrdiff_t mixups]
+kmk_grep_CFLAGS.win += -wd4244 # grep.c(1423): warning C4244: '=': conversion from '__int64' to 'off_t', possible loss of data
+kmk_grep_CFLAGS.win += -wd4267 # grep.c(2303): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
+kmk_grep_CFLAGS.win += -wd4146 # fnmatch_loop.c(1067): warning C4146: unary minus operator applied to unsigned type, result still unsigned
+kmk_grep_CFLAGS.win += -wd4308 # fnmatch_loop.c(1067): warning C4308: negative integral constant converted to unsigned type
+ifdef KBUILD_SOLARIS_10
+ kmk_grep_CFLAGS += -std=gnu99
+endif
+kmk_grep_INCS = \
+	$(kmk_grep_0_OUTDIR) \
+	. \
+	lib
+kmk_grep_SOURCES = \
+	src/grep.c \
+	src/dfasearch.c \
+	src/kwsearch.c \
+	src/kwset.c \
+	src/searchutils.c \
+       \
+	lib/regex.c \
+	lib/dfa.c \
+       \
+	lib/getopt1.c \
+	lib/getopt.c \
+       \
+	lib/xalloc-die.c \
+	lib/xmalloc.c \
+       lib/reallocarray.c \
+	lib/obstack.c \
+       lib/c-stack.c \
+       lib/malloc/dynarray_resize.c \
+       \
+       lib/stripslash.c \
+       lib/argmatch.c \
+       lib/quotearg.c \
+       lib/exclude.c \
+       lib/fnmatch.c \
+       lib/hash.c \
+       lib/error.c \
+       \
+       lib/openat-safer.c \
+       lib/fd-safer.c \
+       lib/fd-safer-flag.c \
+       lib/dup-safer.c \
+       lib/dup-safer-flag.c \
+       lib/closeout.c \
+       lib/close-stream.c \
+       lib/fpending.c \
+       lib/safe-read.c \
+       \
+       lib/c-strcasecmp.c \
+       lib/localeinfo.c \
+       lib/localcharset.c \
+       lib/mbchar.c \
+       lib/mbscasecmp.c \
+	lib/memrchr.c \
+	lib/memchr2.c \
+       lib/wmempcpy.c \
+       lib/strnlen1.c \
+       lib/xstrtoimax.c \
+       \
+       lib/exitfail.c \
+       lib/version-etc.c \
+       lib/version-etc-fsf.c \
+
+kmk_grep_SOURCES.win = \
+	lib/w32-initialize-main.c \
+	lib/colorize-w32.c \
+	lib/basename-lgpl.c \
+	lib/getpagesize.c \
+	lib/getprogname-w32.c \
+	lib/xbinary-io.c \
+       lib/strerror.c \
+       \
+	../lib/get_codepage.c \
+	../lib/nt/ntstat.c \
+	../lib/nt/ntdir.c \
+	../lib/nt/nthlpcore.c \
+	../lib/nt/nthlpfs.c \
+	../lib/nt/ntopenat.c \
+	../lib/nt/fts-nt.c
+
+#TODO use:	../lib/startuphacks-win.c
+
+#
+# We generate a few files.
+#
+kmk_grep_DEPS = \
+	$(kmk_grep_0_OUTDIR)/config.h \
+	$(kmk_grep_0_OUTDIR)/configmake.h
+kmk_grep_DEPS.win = \
+	$(kmk_grep_0_OUTDIR)/getopt-cdefs.h \
+	$(kmk_grep_0_OUTDIR)/getopt.h \
+	$(kmk_grep_0_OUTDIR)/unistd.h \
+	$(kmk_grep_0_OUTDIR)/sigsegv.h \
+	$(kmk_grep_0_OUTDIR)/fnmatch.h
+
+kmk_grep_CLEAN = $(kmk_grep_DEPS)
+kmk_grep_CLEAN.win = $(kmk_grep_DEPS.win) $(kmk_grep_LNK_DEPS.win)
+
+# Use checked in config.h instead of running ./configure for it.
+$$(kmk_grep_0_OUTDIR)/config.h: $(PATH_SUB_CURRENT)/config.$(KBUILD_TARGET).h | $$(call DIRDEP,$$(kmk_grep_0_OUTDIR))
+	$(CP) -f -- "$^" "$@"
+
+# This shouldn't be used with NLS disabled, so the paths doesn't matter I hope.
+$$(kmk_grep_0_OUTDIR)/configmake.h: $(MAKEFILE_CURRENT) | $$(call DIRDEP,$$(kmk_grep_0_OUTDIR))
+	$(APPEND) -tn "$@" \
+		'#define PREFIX         "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define EXEC_PREFIX    "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define BINDIR         "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define SBINDIR        "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define LIBEXECDIR     "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define DATAROOTDIR    "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define DATADIR        "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define SYSCONFDIR     "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define SHAREDSTATEDIR "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define LOCALSTATEDIR  "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define RUNSTATEDIR    "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define INCLUDEDIR     "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define OLDINCLUDEDIR  "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define DOCDIR         "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define INFODIR        "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define HTMLDIR        "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define DVIDIR         "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define PDFDIR         "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define PSDIR          "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define LIBDIR         "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define LISPDIR        "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define LOCALEDIR      "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define MANDIR         "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define MANEXT         "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define PKGDATADIR     "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define PKGINCLUDEDIR  "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define PKGLIBDIR      "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"'; \
+		'#define PKGLIBEXECDIR  "kBuild/bin/$(KBUILD_TARGET).$(KBUILD_TARGET_ARCH)/"';
+
+# Windows needs a few more things:
+$$(kmk_grep_0_OUTDIR)/getopt-cdefs.h: $(PATH_SUB_CURRENT)/lib/getopt-cdefs.in.h \
+		$(MAKEFILE_CURRENT) | $$(call DIRDEP,$$(kmk_grep_0_OUTDIR))
+	$(SED) \
+       	-e 's,@HAVE_SYS_CDEFS_H@,0,' \
+               --output "$@" \
+               $(qdeps sh,$@,1)
+
+$$(kmk_grep_0_OUTDIR)/getopt.h: $(PATH_SUB_CURRENT)/lib/getopt.in.h \
+		$(MAKEFILE_CURRENT) | $$(call DIRDEP,$$(kmk_grep_0_OUTDIR))
+	$(SED) \
+       	-e 's,@GUARD_PREFIX@,GNULIB,' \
+       	-e '/@PRAGMA_SYSTEM_HEADER@/d' \
+       	-e '/@PRAGMA_COLUMNS@/d' \
+       	-e 's,@HAVE_SYS_CDEFS_H@,0,' \
+       	-e '/@INCLUDE_NEXT@/d' \
+       	-e '/@NEXT_GETOPT_H@/d' \
+       	-e 's,@HAVE_GETOPT_H@,0,' \
+               --output "$@" \
+               $(qdeps sh,$@,1)
+
+$$(kmk_grep_0_OUTDIR)/fnmatch.h: $(PATH_SUB_CURRENT)/lib/fnmatch.in.h \
+		$(MAKEFILE_CURRENT) | $$(call DIRDEP,$$(kmk_grep_0_OUTDIR))
+	$(SED) \
+       	-e 's,@GUARD_PREFIX@,GNULIB,' \
+       	-e '/@PRAGMA_SYSTEM_HEADER@/d' \
+       	-e '/@PRAGMA_COLUMNS@/d' \
+       	-e 's,@HAVE_FNMATCH_H@,0,' \
+       	-e 's,@REPLACE_FNMATCH@,0,' \
+       	-e 's,@GNULIB_FNMATCH@,1,' \
+       	-e 's,@HAVE_FNMATCH@,0,' \
+       	-e '/@INCLUDE_NEXT@/d' \
+               --output "$@" \
+               $(qdeps sh,$@,1)
+
+$$(kmk_grep_0_OUTDIR)/unistd.h: $(MAKEFILE_CURRENT) | $$(call DIRDEP,$$(kmk_grep_0_OUTDIR))
+	$(APPEND) -tn "$@" \
+		'extern int getpagesize(void);' \
+		'extern int fchdir(int);'
+
+$$(kmk_grep_0_OUTDIR)/sigsegv.h: $(PATH_SUB_CURRENT)/lib/sigsegv.in.h | $$(call DIRDEP,$$(kmk_grep_0_OUTDIR))
+	$(CP) -f -- "$^" "$@"
+
+ifndef KBUILD_NEW_VCC # Add a manifest making UTF-8 as the active code page.
+kmk_grep_LNK_DEPS.win = \
+	$(kmk_grep_0_OUTDIR)/kmk_grep.manifest
+
+$$(kmk_grep_0_OUTDIR)/kmk_grep.manifest: $(MAKEFILE_CURRENT) | $$(call DIRDEP,$$(kmk_grep_0_OUTDIR))
+	$(APPEND) -tn "$@" \
+		'<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' \
+		'<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">' \
+		'  <assemblyIdentity type="win32" name="kmk_grep.exe" version="3.7.0.0"/>' \
+		'  <application>' \
+		'    <windowsSettings>' \
+		'      <activeCodePage xmlns="http://schemas.microsoft.com/SMI/2019/WindowsSettings">UTF-8</activeCodePage>' \
+		'    </windowsSettings>' \
+		'  </application>' \
+		'</assembly>'
+
+# HACK ALERT! Using kmk_builting_redirect here to bypass some shell quoting
+#             issue.  Also, no idea why we need to escape the hash (\#1).
+kmk_grep_POST_CMDS.win = \
+	$(REDIRECT) -- $(PATH_SDK_WINSDK10-UM_BIN)/mt.exe \
+		-manifest "$(subst /,\\,$(kmk_grep_0_OUTDIR)/kmk_grep.manifest)" \
+		'-outputresource:$(subst /,\\,$(out));\#1'
+endif
+
+
+include $(FILE_KBUILD_SUB_FOOTER)
+
diff --git a/src/grep/NEWS b/src/grep/NEWS
new file mode 100644
index 0000000..94c8a39
--- /dev/null
+++ b/src/grep/NEWS
@@ -0,0 +1,1290 @@
+GNU grep NEWS                                    -*- outline -*-
+
+* Noteworthy changes in release 3.7 (2021-08-14) [stable]
+
+** Changes in behavior
+
+  Use of the --unix-byte-offsets (-u) option now evokes a warning.
+  Since 3.1, this Windows-only option has had no effect.
+
+** Bug fixes
+
+  Preprocessing N patterns would take at least O(N^2) time when too many
+  patterns hashed to too few buckets. This now takes seconds, not days:
+  : | grep -Ff <(seq 6400000 | tr 0-9 A-J)
+  [Bug#44754 introduced in grep 3.5]
+
+
+* Noteworthy changes in release 3.6 (2020-11-08) [stable]
+
+** Changes in behavior
+
+  The GREP_OPTIONS environment variable no longer affects grep's behavior.
+  The variable was declared obsolescent in grep 2.21 (2014), and since
+  then any use had caused grep to issue a diagnostic.
+
+** Bug fixes
+
+  grep's DFA matcher performed an invalid regex transformation
+  that would convert an ERE like a+a+a+ to a+a+, which would make
+  grep a+a+a+ mistakenly match "aa".
+  [Bug#44351 introduced in grep 3.2]
+
+  grep -P now reports the troublesome input filename upon PCRE execution
+  failure.  Before, searching many files for something rare might fail with
+  just "exceeded PCRE's backtracking limit".  Now, it also reports which file
+  triggered the failure.
+
+
+* Noteworthy changes in release 3.5 (2020-09-27) [stable]
+
+** Changes in behavior
+
+  The message that a binary file matches is now sent to standard error
+  and the message has been reworded from "Binary file FOO matches" to
+  "grep: FOO: binary file matches", to avoid confusion with ordinary
+  output or when file names contain spaces and the like, and to be
+  more consistent with other diagnostics.  For example, commands
+  like 'grep PATTERN FILE | wc' no longer add 1 to the count of
+  matching text lines due to the presence of the message.  Like other
+  stderr messages, the message is now omitted if the --no-messages
+  (-s) option is given.
+
+  Two other stderr messages now use the typical form too.  They are
+  now "grep: FOO: warning: recursive directory loop" and "grep: FOO:
+  input file is also the output".
+
+  The --files-without-match (-L) option has reverted to its behavior
+  in grep 3.1 and earlier.  That is, grep -L again succeeds when a
+  line is selected, not when a file is listed.  The behavior in grep
+  3.2 through 3.4 was causing compatibility problems.
+
+** Bug fixes
+
+  grep -I no longer issues a spurious "Binary file FOO matches" line.
+  [Bug#33552 introduced in grep 2.23]
+
+  In UTF-8 locales, grep -w no longer ignores a multibyte word
+  constituent just before what would otherwise be a word match.
+  [Bug#43225 introduced in grep 2.28]
+
+  grep -i no longer mishandles ASCII characters that match multibyte
+  characters.  For example, 'LC_ALL=tr_TR.utf8 grep -i i' no longer
+  dumps core merely because 'i' matches 'Ä°' (U+0130 LATIN CAPITAL
+  LETTER I WITH DOT ABOVE) in Turkish when ignoring case.
+  [Bug#43577 introduced partly in grep 2.28 and partly in grep 3.4]
+
+  A performance regression with -E and many patterns has been mostly fixed.
+  "Mostly" as there is a performance tradeoff between Bug#22357 and Bug#40634.
+  [Bug#40634 introduced in grep 2.28]
+
+  A performance regression with many duplicate patterns has been fixed.
+  [Bug#43040 introduced in grep 3.4]
+
+  An N^2 RSS performance regression with many patterns has been fixed
+  in common cases (no backref, and no use of -o or --color).
+  With only 80,000 lines of /usr/share/dict/linux.words, the following
+  would use 100GB of RSS and take 3 minutes. With the fix, it used less
+  than 400MB and took less than one second:
+    head -80000 /usr/share/dict/linux.words > w; grep -vf w w
+  [Bug#43527 introduced in grep 3.4]
+
+** Build-related
+
+  "make dist" builds .tar.gz files again, as they are still used in
+  some barebones builds.
+
+
+* Noteworthy changes in release 3.4 (2020-01-02) [stable]
+
+** New features
+
+  The new --no-ignore-case option causes grep to observe case
+  distinctions, overriding any previous -i (--ignore-case) option.
+
+** Bug fixes
+
+  '.' no longer matches some invalid byte sequences in UTF-8 locales.
+  [bug introduced in grep 2.7]
+
+  grep -Fw can no longer false match in non-UTF-8 multibyte locales
+  For example, this command would erroneously print its input line:
+    echo ab | LC_CTYPE=ja_JP.eucjp grep -Fw b
+  [Bug#38223 introduced in grep 2.28]
+
+  The exit status of 'grep -L' is no longer incorrect when standard
+  output is /dev/null.
+  [Bug#37716 introduced in grep 3.2]
+
+  A performance bug has been fixed when grep is given many patterns,
+  each with no back-reference.
+  [Bug#33249 introduced in grep 2.5]
+
+  A performance bug has been fixed for patterns like '01.2' that
+  cause grep to reorder tokens internally.
+  [Bug#34951 introduced in grep 3.2]
+
+** Build-related
+
+  The build procedure no longer relies on any already-built src/grep
+  that might be absent or broken.  Instead, it uses the system 'grep'
+  to bootstrap, and uses src/grep only to test the build.  On Solaris
+  /usr/bin/grep is broken, but you can install GNU or XPG4 'grep' from
+  the standard Solaris distribution before building GNU Grep yourself.
+  [bug introduced in grep 2.8]
+
+
+* Noteworthy changes in release 3.3 (2018-12-20) [stable]
+
+** Bug fixes
+
+  Some uses of \b in the C locale and with the DFA matcher would fail, e.g.,
+  the following would print nothing (it should print the input line):
+    echo 123-x|LC_ALL=C grep '.\bx'
+  Using a multibyte locale, using certain regexp constructs (some ranges,
+  back-references), or forcing use of the PCRE matcher via --perl-regexp (-P)
+  would avoid the bug.
+  [bug introduced in grep 3.2]
+
+
+* Noteworthy changes in release 3.2 (2018-12-20) [stable]
+
+** Changes in behavior
+
+  The --files-without-match (-L) option now causes grep to succeed
+  when a file is listed, instead of when a line is selected.  This
+  resembles what git-grep does.
+
+** Bug fixes
+
+  The --recursive (-r) option no longer fails on MS-Windows.
+  [bug introduced in grep 2.11]
+
+** Improvements
+
+  An over-30x performance improvement when many 'or'd expressions
+  share a common prefix, thanks to improvements in gnulib's dfa.c,
+  by Norihiro Tanaka.  See gnulib commits v0.1-2110-ge648401be,
+  v0.1-2111-g4299106ce, v0.1-2117-g617a60974
+
+  An additional 3-23% speed-up when searching large files, via
+  increased initial buffer size.
+
+  grep now diagnoses stack overflow.  Before grep-2.6, the included
+  regexp code would detect it.  Since 2.6, grep defaulted to using
+  glibc's regexp, which lost that capability.
+
+
+* Noteworthy changes in release 3.1 (2017-07-02) [stable]
+
+** Improvements
+
+  grep '[0-9]' is now just as fast as grep '[[:digit:]]' when run
+  in a multi-byte locale.  Before, it was several times slower.
+
+** Changes in behavior
+
+  Context no longer excludes selected lines omitted because of -m.
+  For example, 'grep "^" -m1 -A1' now outputs the first two input
+  lines, not just the first line.  This fixes a glitch that has been
+  present since -m was added in grep 2.5.
+
+  The following changes affect only MS-Windows platforms.  First, the
+  --binary (-U) option now governs whether binary I/O is used, instead
+  of a heuristic that was sometimes incorrect.  Second, the
+  --unix-byte-offsets (-u) option now has no effect on MS-Windows too.
+
+
+* Noteworthy changes in release 3.0 (2017-02-09) [stable]
+
+** Bug fixes
+
+  grep without -F no longer goes awry when given two or more patterns
+  that contain no special characters other than '\' and also contain a
+  subpattern like '\.' that escapes a character to make it ordinary.
+  [bug introduced in grep 2.28]
+
+  grep no longer fails to build on PCRE versions before 8.20.
+  [bug introduced in grep 2.28]
+
+
+* Noteworthy changes in release 2.28 (2017-02-06) [stable]
+
+** Bug fixes
+
+  When grep -Fo finds matches of differing length, it could
+  mistakenly print a shorter one.  Now it prints a longest one.
+  [bug introduced in grep-2.26]
+
+  When standard output is /dev/null, grep no longer fails when
+  standard input is a file in the Linux /proc file system, or when
+  standard input is a pipe and standard output is in append mode.
+  [bugs introduced in grep-2.27]
+
+  Fix performance regression with multiple patterns, e.g., for -Fi in
+  a multi-byte locale, or for -Fw in a single-byte locale.
+  [bugs introduced in grep-2.19, grep-2.22 and grep-2.26]
+
+** Improvements
+
+  Improve performance for -E or -G pattern lists that are easily
+  converted to -F format.
+
+
+* Noteworthy changes in release 2.27 (2016-12-06) [stable]
+
+** Bug fixes
+
+  grep no longer reports a false match in a multibyte, non-UTF8 locale
+  like zh_CN.gb18030, with a regular expression like ".*7" that just
+  happens to match the 4-byte representation of gb18030's \uC9, the
+  final byte of which is the digit "7".
+  [bug introduced in grep-2.19]
+
+  Unless an early-exit option like -q, -l, -L, -m, or -f /dev/null is
+  specified, grep now reads all of a non-seekable standard input,
+  even if this cannot affect grep's output or exit status.  This works
+  better with nonportable scripts that run "PROGRAM | grep PATTERN
+  >/dev/null" where PROGRAM dies when writing into a broken pipe.
+  [bug introduced in grep-2.26]
+
+  grep no longer mishandles ranges in nontrivial unibyte locales.
+  [bug introduced in grep-2.26]
+
+  grep -P no longer attempts multiline matches.  This works more
+  intuitively with unusual patterns, and means that grep -Pz no longer
+  rejects patterns containing ^ and $ and works when combined with -x.
+  [bugs introduced in grep-2.23] A downside is that grep -P is now
+  significantly slower, albeit typically still faster than pcregrep.
+
+  grep -m0 -L PAT FILE now outputs "FILE".  [bug introduced in grep-2.5]
+
+  To output ':' and tab-align the following character C, grep -T no
+  longer outputs tab-backspace-':'-C, an approach that has problems if
+  run inside an Emacs shell window.  [bug introduced in grep-2.5.2]
+
+  grep -T now uses worst-case widths of line numbers and byte offsets
+  instead of guessing widths that might not work with larger files.
+  [bug introduced in grep-2.5.2]
+
+  grep's use of getprogname no longer causes a build failure on HP-UX.
+
+** Improvements
+
+  grep no longer reads the input in a few more cases when it is easy
+  to see that matching cannot succeed, e.g., 'grep -f /dev/null'.
+
+
+* Noteworthy changes in release 2.26 (2016-10-02) [stable]
+
+** Bug fixes
+
+  Grep no longer omits output merely because it follows an output line
+  suppressed due to encoding errors.  [bug introduced in grep-2.21]
+
+  In the Shift_JIS locale, grep no longer mistakenly matches in the
+  middle of a multibyte character. [bug present since "the beginning"]
+
+** Improvements
+
+  grep can be much faster now when standard output is /dev/null.
+
+  grep -F is now typically much faster when many patterns are given,
+  as it now uses the Aho-Corasick algorithm instead of the
+  Commentz-Walter algorithm in that case.
+
+  grep -iF is typically much faster in a multibyte locale, if the
+  pattern and its case counterparts contain only single byte characters.
+
+  grep with complicated expressions (e.g., back-references) and without
+  -i now uses the regex fastmap for better performance.
+
+  In multibyte locales, grep now handles leading "." in patterns more
+  efficiently.
+
+  grep now prints a "FILENAME:LINENO: " prefix when diagnosing an
+  invalid regular expression that was read from an '-f'-specified file.
+
+
+* Noteworthy changes in release 2.25 (2016-04-21) [stable]
+
+** Bug fixes
+
+  In the C or POSIX locale, grep now treats all bytes as valid
+  characters even if the C runtime library says otherwise.  The
+  revised behavior is more compatible with the original intent of
+  POSIX, and the next release of POSIX will likely make this official.
+  [bug introduced in grep-2.23]
+
+  grep -Pz no longer mistakenly diagnoses patterns like [^a] that use
+  negated character classes. [bug introduced in grep-2.24]
+
+  grep -oz now uses null bytes, not newlines, to terminate output lines.
+  [bug introduced in grep-2.5]
+
+** Improvements
+
+  grep now outputs details more consistently when reporting a write error.
+  E.g., "grep: write error: No space left on device" rather than just
+  "grep: write error".
+
+
+* Noteworthy changes in release 2.24 (2016-03-10) [stable]
+
+** Bug fixes
+
+  grep -z would match strings it should not.  To trigger the bug, you'd
+  have to use a regular expression including an anchor (^ or $) and a
+  feature like a range or a back-reference, causing grep to forego its DFA
+  matcher and resort to using re_search.  With a multibyte locale, that
+  matcher could mistakenly match a string containing a newline.
+  For example, this command:
+    printf 'a\nb\0' | LC_ALL=en_US.utf-8 grep -z '^[a-b]*b'
+  would mistakenly match and print all four input bytes.  After the fix,
+  there is no match, as expected.
+  [bug introduced in grep-2.7]
+
+  grep -Pz now diagnoses attempts to use patterns containing ^ and $,
+  instead of mishandling these patterns.  This problem seems to be
+  inherent to the PCRE API; removing this limitation is on PCRE's
+  maint/README wish list.  Patterns can continue to match literal ^
+  and $ by escaping them with \ (now needed even inside [...]).
+  [bug introduced in grep-2.5]
+
+
+* Noteworthy changes in release 2.23 (2016-02-04) [stable]
+
+** Bug fixes
+
+  Binary files are now less likely to generate diagnostics and more
+  likely to yield text matches.  grep now reports "Binary file FOO
+  matches" and suppresses further output instead of outputting a line
+  containing an encoding error; hence grep can now report matching text
+  before a later binary match.  Formerly, grep reported FOO to be
+  binary when it found an encoding error in FOO before generating
+  output for FOO, which meant it never reported both matching text and
+  matching binary data; this was less useful for searching text
+  containing encoding errors in non-matching lines.
+  [bug introduced in grep-2.21]
+
+  grep -c no longer stops counting when finding binary data.
+  [bug introduced in grep-2.21]
+
+  grep no longer outputs encoding errors in unibyte locales.
+  For example, if the byte '\x81' is not a valid character in a
+  unibyte locale, grep treats the byte as binary data.
+  [bug introduced in grep-2.21]
+
+  grep -oP is no longer susceptible to an infinite loop when processing
+  invalid UTF8 just before a match.
+  [bug introduced in grep-2.22]
+
+  --exclude and related options are now matched against trailing
+  parts of command-line arguments, not against the entire arguments.
+  This partly reverts the --exclude-related change in 2.22.
+  [bug introduced in grep-2.22]
+
+  --line-buffer is no longer ineffective when combined with -l.
+  [bug introduced in grep-2.5]
+
+  -xw is now equivalent to -x more consistently, with -P and with backrefs.
+  [bug only partially fixed in grep-2.19]
+
+
+* Noteworthy changes in release 2.22 (2015-11-01) [stable]
+
+** Improvements
+
+  Performance has improved for patterns containing very long strings,
+  reducing preprocessing time for an N-byte regexp from O(N^2) to
+  only slightly superlinear for most patterns.  Before, a command like
+  the following would take over a minute, but now, it takes less than
+  a second:
+  : | grep -f <(seq -s '' 99999)
+
+  When building grep, 'configure' now uses PCRE's pkg-config module for
+  configuration information, rather than attempting to guess it by hand.
+
+** Bug fixes
+
+  A DFA matcher bug made this command mistakenly print its input line:
+    echo axb | grep -E '^x|x$'
+  Likewise for this equivalent command:
+    echo axb | grep -e '^x' -e 'x$'
+  [bug introduced in grep-2.19 ]
+
+  grep no longer reads from uninitialized memory or from beyond the end
+  of the heap-allocated input buffer.  This fix addressed CVE-2015-1345.
+  [bug introduced in grep-2.19 ]
+
+  With -z, '.' and '[^x]' in a pattern now consistently match newline.
+  Previously, they sometimes matched newline, and sometimes did not.
+  [bug introduced in grep-2.4]
+
+  When the JIT stack is exhausted, grep -P now grows the stack rather
+  than reporting an internal PCRE error.
+
+  'grep -D skip PATTERN FILE' no longer hangs if FILE is a fifo.
+  [bug introduced in grep-2.12]
+
+  --exclude and related options are now matched against entire
+  command-line arguments, not against command-line components.
+  [bug introduced in grep-2.6]
+
+  Fix performance degradation of grep -Fw in unibyte locales.
+  [bug introduced in grep-2.19 ]
+
+
+* Noteworthy changes in release 2.21 (2014-11-23) [stable]
+
+** Improvements
+
+  Performance has been greatly improved for searching files containing
+  holes, on platforms where lseek's SEEK_DATA flag works efficiently.
+
+  Performance has improved for rejecting data that cannot match even
+  the first part of a nontrivial pattern.
+
+  Performance has improved for very long strings in patterns.
+
+  If a file contains data improperly encoded for the current locale,
+  and this is discovered before any of the file's contents are output,
+  grep now treats the file as binary.
+
+  grep -P no longer reports an error and exits when given invalid UTF-8 data.
+  Instead, it considers the data to be non-matching.
+
+** Bug fixes
+
+  grep no longer mishandles patterns that contain \w or \W in multibyte
+  locales.
+
+  grep would fail to count newlines internally when operating in non-UTF8
+  multibyte locales, leading it to print potentially many lines that did
+  not match.  E.g., the command, "seq 10 | env LC_ALL=zh_CN src/grep -n .."
+  would print this:
+  1:1
+  2
+  3
+  4
+  5
+  6
+  7
+  8
+  9
+  10
+  implying that the match, "10" was on line 1.
+  [bug introduced in grep-2.19]
+
+  grep -F -x -o no longer prints an extra newline for each match.
+  [bug introduced in grep-2.19]
+
+  grep in a non-UTF8 multibyte locale could mistakenly match in the middle
+  of a multibyte character when using a '^'-anchored alternate in a pattern,
+  leading it to print non-matching lines.  [bug present since "the beginning"]
+
+  grep -F Y no longer fails to match in non-UTF8 multibyte locales like
+  Shift-JIS, when the input contains a 2-byte character, XY, followed by
+  the single-byte search pattern, Y.  grep would find the first, middle-
+  of-multibyte matching "Y", and then mistakenly advance an internal
+  pointer one byte too far, skipping over the target "Y" just after that.
+  [bug introduced in grep-2.19]
+
+  grep -E rejected unmatched ')', instead of treating it like '\)'.
+  [bug present since "the beginning"]
+
+  On NetBSD, grep -r no longer reports "Inappropriate file type or format"
+  when refusing to follow a symbolic link.
+  [bug introduced in grep-2.12]
+
+** Changes in behavior
+
+  The GREP_OPTIONS environment variable is now obsolescent, and grep
+  now warns if it is used.  Please use an alias or script instead.
+
+  In locales with multibyte character encodings other than UTF-8,
+  grep -P now reports an error and exits instead of misbehaving.
+
+  When searching binary data, grep now may treat non-text bytes as
+  line terminators.  This can boost performance significantly.
+
+  grep -z no longer automatically treats the byte '\200' as binary data.
+
+* Noteworthy changes in release 2.20 (2014-06-03) [stable]
+
+** Bug fixes
+
+  grep --max-count=N FILE would no longer stop reading after the Nth match.
+  I.e., while grep would still print the correct output, it would continue
+  reading until end of input, and hence, potentially forever.
+  [bug introduced in grep-2.19]
+
+  A command like echo aa|grep -E 'a(b$|c$)' would mistakenly
+  report the input as a matched line.
+  [bug introduced in grep-2.19]
+
+** Changes in behavior
+
+  grep --exclude-dir='FOO/' now excludes the directory FOO.
+  Previously, the trailing slash meant the option was ineffective.
+
+
+* Noteworthy changes in release 2.19 (2014-05-22) [stable]
+
+** Improvements
+
+  Performance has improved, typically by 10% and in some cases by a
+  factor of 200.  However, performance of grep -P in UTF-8 locales has
+  gotten worse as part of the fix for the crashes mentioned below.
+
+** Bug fixes
+
+  grep no longer mishandles patterns like [a-[.z.]], and no longer
+  mishandles patterns like [^a] in locales that have multicharacter
+  collating sequences so that [^a] can match a string of two characters.
+
+  grep no longer mishandles an empty pattern at the end of a pattern list.
+  [bug introduced in grep-2.5]
+
+  grep -C NUM now outputs separators consistently even when NUM is zero,
+  and similarly for grep -A NUM and grep -B NUM.
+  [bug present since "the beginning"]
+
+  grep -f no longer mishandles patterns containing NUL bytes.
+  [bug introduced in grep-2.11]
+
+  Plain grep, grep -E, and grep -F now treat encoding errors in patterns
+  the same way the GNU regular expression matcher treats them, with respect
+  to whether the errors can match parts of multibyte characters in data.
+  [bug present since "the beginning"]
+
+  grep -w no longer mishandles a potential match adjacent to a letter that
+  takes up two or more bytes in a multibyte encoding.
+  Similarly, the patterns '\<', '\>', '\b', and '\B' no longer
+  mishandle word-boundary matches in multibyte locales.
+  [bug present since "the beginning"]
+
+  grep -P now reports an error and exits when given invalid UTF-8 data.
+  Previously it was unreliable, and sometimes crashed or looped.
+  [bug introduced in grep-2.16]
+
+  grep -P now works with -w and -x and back-references. Before,
+  echo aa|grep -Pw '(.)\1' would fail to match, yet
+  echo aa|grep -Pw '(.)\2' would match.
+
+  grep -Pw now works like grep -w in that the matched string has to be
+  preceded and followed by non-word components or the beginning and end
+  of the line (as opposed to word boundaries before).  Before, this
+  echo a@@a| grep -Pw @@ would match, yet this
+  echo a@@a| grep -w @@ would not.  Now, they both fail to match,
+  per the documentation on how grep's -w works.
+
+  grep -i no longer mishandles patterns containing titlecase characters.
+  For example, in a locale containing the titlecase character
+  'Lj' (U+01C8 LATIN CAPITAL LETTER L WITH SMALL LETTER J),
+  'grep -i Lj' now matches both 'LJ' (U+01C7 LATIN CAPITAL LETTER LJ)
+  and 'lj' (U+01C9 LATIN SMALL LETTER LJ).
+
+
+* Noteworthy changes in release 2.18 (2014-02-20) [stable]
+
+** Bug fixes
+
+  grep no longer mishandles patterns like [^^-~] in unibyte locales.
+  [bug introduced in grep-2.8]
+
+  grep -i in a multibyte, non-UTF8 locale could be up to 200 times slower
+  than in 2.16.  [bug introduced in grep-2.17]
+
+
+* Noteworthy changes in release 2.17 (2014-02-17) [stable]
+
+** Improvements
+
+  grep -i in a multibyte locale is now typically 10 times faster
+  for patterns that do not contain \ or [.
+
+  grep (without -i) in a multibyte locale is now up to 7 times faster
+  when processing many matched lines.
+
+** Maintenance
+
+  grep's --mmap option was disabled in March of 2010, and began to
+  elicit a warning in January of 2012.  Now it is completely gone.
+
+
+* Noteworthy changes in release 2.16 (2014-01-01) [stable]
+
+** Bug fixes
+
+  Fix gnulib-provided maint.mk so that the release procedure described
+  in README-release actually does what we want.  Before that fix, that
+  procedure resulted in a grep-2.15 tarball that would lead to a grep
+  binary whose --version-reported version number was 2.14.51...
+
+  The fix to make \s and \S work with multi-byte white space broke
+  the use of each shortcut whenever followed by a repetition operator.
+  For example, \s*, \s+, \s? and \s{3} would all malfunction in a
+  multi-byte locale.  [bug introduced in grep-2.15]
+
+  The fix to make grep -P work better with UTF-8 made it possible for
+  grep to evoke a larger set of PCRE errors, some of which could trigger
+  an abort.  E.g., this would abort:
+    printf '\x82'|LC_ALL=en_US.UTF-8 grep -P y
+  Now grep handles arbitrary PCRE errors.  [bug introduced in grep-2.15]
+
+  Handle very long lines (2GiB and longer) on systems with a deficient
+  read system call.
+
+* Noteworthy changes in release 2.15 (2013-10-26) [stable]
+
+** Bug fixes
+
+  grep's \s and \S failed to work with multi-byte white space characters.
+  For example, \s would fail to match a non-breaking space, and this
+  would print nothing: printf '\xc2\xa0' | LC_ALL=en_US.UTF-8 grep '\s'
+  A related bug is that \S would mistakenly match an invalid multibyte
+  character.  For example, the following would match:
+    printf '\x82\n' | LC_ALL=en_US.UTF-8 grep '^\S$'
+  [bug present since grep-2.6]
+
+  grep -i would segfault on systems using UTF-16-based wchar_t (Cygwin)
+  when converting an input string containing certain 4-byte UTF-8
+  sequences to lower case.  The conversions to wchar_t and back to
+  a UTF-8 multibyte string did not take surrogate pairs into account.
+  [bug present since at least grep-2.6, though the segfault is new with 2.13]
+
+  grep -E would segfault when given a regexp like '([^.]*[M]){1,2}'
+  for any multibyte character M. [bug introduced in grep-2.6, which would
+  segfault, but 2.7 and 2.8 had no problem, and 2.9 through 2.14 would
+  hit a failed assertion. ]
+
+  grep -F would get stuck in an infinite loop when given a search string
+  that is an invalid byte sequence in the current locale and that matches
+  the bytes of the input twice on a line.  Now grep fails with exit status 1.
+
+  grep -P could misbehave.  While multi-byte mode is only supported by PCRE
+  with UTF-8 locales, grep did not activate it.  This would cause failures
+  to match multibyte characters against some regular expressions, especially
+  those including the '.' or '\p' metacharacters.
+
+** New features
+
+  grep -P can now use a just-in-time compiler to greatly speed up matches,
+  This feature is transparent to the user; no flag is required to enable
+  it.  It is only available if the corresponding support in the PCRE
+  library is detected when grep is compiled.
+
+
+* Noteworthy changes in release 2.14 (2012-08-20) [stable]
+
+** Bug fixes
+
+  grep -i '^$' could exit 0 (i.e., report a match) in a multi-byte locale,
+  even though there was no match, and the command generated no output.
+  E.g., seq 2 | LC_ALL=en_US.utf8 grep -il '^$' would mistakenly print
+  "(standard input)".  Related, seq 9 | LC_ALL=en_US.utf8 grep -in '^$'
+  would print "2:4:6:8:10:12:14:16" and exit 0.  Now it prints nothing
+  and exits with status of 1.  [bug introduced in grep-2.6]
+
+  'grep' no longer falsely reports text files as being binary on file
+  systems that compress contents or that store tiny contents in metadata.
+
+
+* Noteworthy changes in release 2.13 (2012-07-04) [stable]
+
+** Bug fixes
+
+  grep -i, in a multi-byte locale, when matching a line containing a character
+  like the UTF-8 Turkish I-with-dot (U+0130) (whose lower-case representation
+  occupies fewer bytes), would print an incomplete output line.
+  Similarly, with a matched line containing a character (e.g., the Latin
+  capital I in a Turkish UTF-8 locale), where the lower-case representation
+  occupies more bytes, grep could print garbage.
+  [bug introduced in grep-2.6]
+
+  --include and --exclude can again be combined, and again apply to
+  the command line, e.g., "grep --include='*.[ch]' --exclude='system.h'
+  PATTERN *" again reads all *.c and *.h files except for system.h.
+  [bug introduced in grep-2.6]
+
+** New features
+
+  'grep' without -z now treats a sparse file as binary, if it can
+  easily determine that the file is sparse.
+
+** Dropped features
+
+  Bootstrapping with Makefile.boot has been broken since grep 2.6,
+  and was removed.
+
+
+* Noteworthy changes in release 2.12 (2012-04-23) [stable]
+
+** Bug fixes
+
+  "echo P|grep --devices=skip P" once again prints P, as it did in 2.10
+  [bug introduced in grep-2.11]
+
+  grep no longer segfaults with -r --exclude-dir and no file operand.
+  I.e., ":|grep -r --exclude-dir=D PAT" would segfault.
+  [bug introduced in grep-2.11]
+
+  Recursive grep now uses fts for directory traversal, so it can
+  handle much-larger directories without reporting things like "File
+  name too long", and it can run much faster when dealing with large
+  directory hierarchies. [bug present since the beginning]
+
+  grep -E 'a{1000000000}' now reports an overflow error rather than
+  silently acting like grep -E 'a\{1000000000}'.
+
+  grep -E 'a{,10}' was not treated equivalently to grep -E 'a{0,10}'.
+
+** New features
+
+  The -R option now has a long-option alias --dereference-recursive.
+
+** Changes in behavior
+
+  The -r (--recursive) option now follows only command-line symlinks.
+  Also, by default -r now reads a device only if it is named on the command
+  line; this can be overridden with --devices.  -R acts as before, so
+  use -R if you prefer the old behavior of following all symlinks and
+  defaulting to reading all devices.
+
+
+* Noteworthy changes in release 2.11 (2012-03-02) [stable]
+
+** Bug fixes
+
+  grep no longer dumps core on lines whose lengths do not fit in 'int'.
+  (e.g., lines longer than 2 GiB on a typical 64-bit host).
+  Instead, grep either works as expected, or reports an error.
+  An error can occur if not enough main memory is available, or if the
+  GNU C library's regular expression functions cannot handle such long lines.
+  [bug present since "the beginning"]
+
+  The -m, -A, -B, and -C options no longer mishandle context line
+  counts that do not fit in 'int'.  Also, grep -c's counts are now
+  limited by the type 'intmax_t' (typically less than 2**63) rather
+  than 'int' (typically less than 2**31).
+
+  grep no longer silently suppresses errors when reading a directory
+  as if it were a text file.  For example, "grep x ." now reports a
+  read error on most systems; formerly, it ignored the error.
+  [bug introduced in grep-2.5]
+
+  grep now exits with status 2 if a directory loop is found,
+  instead of possibly exiting with status 0 or 1.
+  [bug introduced in grep-2.3]
+
+  The -s option now suppresses certain input error diagnostics that it
+  formerly failed to suppress.  These include errors when closing the
+  input, when lseeking the input, and when the input is also the output.
+  [bug introduced in grep-2.4]
+
+  On POSIX systems, commands like "grep PAT < FILE >> FILE"
+  now report an error instead of looping.
+  [bug present since "the beginning"]
+
+  The --include, --exclude, and --exclude-dir options now handle
+  command-line arguments more consistently.  --include and --exclude
+  apply only to non-directories and --exclude-dir applies only to
+  directories.  "-" (standard input) is never excluded, since it is
+  not a file name.
+  [bug introduced in grep-2.5]
+
+  grep no longer rejects "grep -qr . > out", i.e., when run with -q
+  and an input file is the same as the output file, since with -q
+  grep generates no output, so there is no risk of infinite loop or
+  of an output-affecting race condition.  Thus, the use of the following
+  options also disables the input-equals-output failure:
+    --max-count=N (-m) (for N >= 2)
+    --files-with-matches (-l)
+    --files-without-match (-L)
+  [bug introduced in grep-2.10]
+
+  grep no longer emits an error message and quits on MS-Windows when
+  invoked with the -r option.
+
+  grep no longer misinterprets some alternations involving anchors
+  (^, $, \<  \>  \B, \b).  For example, grep -E "(^|\B)a" no
+  longer reports a match for the string "x a".
+  [bug present since "the beginning"]
+
+** New features
+
+  If no file operand is given, and a command-line -r or equivalent
+  option is given, grep now searches the working directory.  Formerly
+  grep ignored the -r and searched standard input nonrecursively.
+  An -r found in GREP_OPTIONS does not have this new effect.
+
+  grep now supports color highlighting of matches on MS-Windows.
+
+** Changes in behavior
+
+  Use of the --mmap option now elicits a warning.  It has been a no-op
+  since March of 2010.
+
+  grep no longer diagnoses write errors repeatedly; it exits after
+  diagnosing the first write error.  This is better behavior when
+  writing to a dangling pipe.
+
+  Syntax errors in GREP_COLORS are now ignored, instead of sometimes
+  eliciting warnings.  This is more consistent with programs that
+  (e.g.) ignore errors in termcap entries.
+
+* Noteworthy changes in release 2.10 (2011-11-16) [stable]
+
+** Bug fixes
+
+  grep no longer mishandles high-bit-set pattern bytes on systems
+  where "char" is a signed type. [bug appears to affect only MS-Windows]
+
+  On POSIX systems, grep now rejects a command like "grep -r pattern . > out",
+  in which the output file is also one of the inputs,
+  because it can result in an "infinite" disk-filling loop.
+  [bug present since "the beginning"]
+
+** Build-related
+
+  "make dist" no longer builds .tar.gz files.
+  xz is portable enough and in wide-enough use that distributing
+  only .tar.xz files is enough.
+
+
+* Noteworthy changes in release 2.9 (2011-06-21) [stable]
+
+** Bug fixes
+
+  grep no longer clobbers heap for an ERE like '(^| )*( |$)'
+  [bug introduced in grep-2.6]
+
+  grep is faster on regular expressions that match multibyte characters
+  in brackets (such as '[áéíóú]').
+
+  echo c|grep '[c]' would fail for any c in 0x80..0xff, with a uni-byte
+  encoding for which the byte-to-wide-char mapping is nontrivial.  For
+  example, the ISO-88591 locales are not affected, but ru_RU.KOI8-R is.
+  [bug introduced in grep-2.6]
+
+  grep -P no longer aborts when PCRE's backtracking limit is exceeded
+  Before, echo aaaaaaaaaaaaaab |grep -P '((a+)*)+$' would abort.  Now,
+  it diagnoses the problem and exits with status 2.
+
+
+* Noteworthy changes in release 2.8 (2011-05-13) [stable]
+
+** Bug fixes
+
+  echo c|grep '[c]' would fail for any c in 0x80..0xff, and in many locales.
+  E.g., printf '\xff\n'|grep "$(printf '[\xff]')" || echo FAIL
+  would print FAIL rather than the required matching line.
+  [bug introduced in grep-2.6]
+
+  grep's interpretation of range expression is now more consistent with
+  that of other tools.  [bug present since multi-byte character set
+  support was introduced in 2.5.2, though the steps needed to reproduce
+  it changed in grep-2.6]
+
+  grep erroneously returned with exit status 1 on some memory allocation
+  failure. [bug present since "the beginning"]
+
+
+* Noteworthy changes in release 2.7 (2010-09-16) [stable]
+
+** Bug fixes
+
+  grep --include=FILE works once again, rather than working like --exclude=FILE
+  [bug introduced in grep-2.6]
+
+  Searching with grep -Fw for an empty string would not match an
+  empty line. [bug present since "the beginning"]
+
+  X{0,0} is implemented correctly.  It used to be a synonym of X{0,1}.
+  [bug present since "the beginning"]
+
+  In multibyte locales, regular expressions including back-references
+  no longer exhibit quadratic complexity (i.e., they are orders
+  of magnitude faster). [bug present since multi-byte character set
+  support was introduced in 2.5.2]
+
+  In UTF-8 locales, regular expressions including "." can be orders
+  of magnitude faster.  For example, "grep ." is now twice as fast
+  as "grep -v ^$", instead of being immensely slower.  It remains
+  slow in other multibyte locales. [bug present since multi-byte
+  character set support was introduced in 2.5.2]
+
+  --mmap was meant to be ignored in 2.6.x, but it was instead
+  removed by mistake.  [bug introduced in 2.6]
+
+** New features
+
+  grep now diagnoses (and fails with exit status 2) commonly mistyped
+  regular expression like [:space:], [:digit:], etc.  Before, those were
+  silently interpreted as [ac:eps] and [dgit:] respectively.  Virtually
+  all who make that class of mistake should have used [[:space:]] or
+  [[:digit:]].  This new behavior is disabled when the POSIXLY_CORRECT
+  environment variable is set.
+
+  On systems using glibc, grep can support equivalence classes.  However,
+  whether they actually work depends on glibc's locale definitions.
+
+* Noteworthy changes in release 2.6.3 (2010-04-02) [stable]
+
+** Bug fixes
+
+  Searching with grep -F for an empty string in a multibyte locale
+  would hang grep. [bug introduced in 2.6.2]
+
+  PCRE support is once again detected on systems with <pcre/pcre.h>
+  [bug introduced in 2.6.2]
+
+
+* Noteworthy changes in release 2.6.2 (2010-03-29) [stable]
+
+** Bug fixes
+
+  grep -F no longer mistakenly reports a match when searching
+  for an incomplete prefix of a multibyte character.
+  [bug present since "the beginning"]
+
+  grep -F no longer goes into an infinite loop when it finds a match for an
+  incomplete (non-prefix of a) multibyte character.  [bug introduced in 2.6]
+
+  Using any of the --include or --exclude* options would cause a NULL
+  dereference.  [bugs introduced in 2.6]
+
+** Build-related
+
+  configure no longer relies on pkg-config to detect PCRE support.
+
+
+* Noteworthy changes in release 2.6.1 (2010-03-25) [stable]
+
+** Bug fixes
+
+  Character classes could cause a segmentation fault if they included a
+  multibyte character.  [bug introduced in 2.6]
+
+  Character ranges would not work in single-byte character sets other
+  than C (for example, ISO-8859-1 or KOI8-R) and some multi-byte locales.
+  For example, this should print "1", but would find no match:
+    $ echo 1 | env -i LC_COLLATE=en_US.UTF-8 grep '[0-9]'
+  [bug introduced in 2.6]
+
+  The output of grep was incorrect for whole-word (-w) matches if the
+  patterns included a back-reference. [bug introduced in grep-2.5.2]
+
+** Portability
+
+  Avoid a link failure on Solaris 8.
+
+
+* Noteworthy changes in release 2.6 (2010-03-23) [stable]
+
+** Speed improvements
+
+  grep is much faster on multibyte character sets, especially (but not
+  limited to) UTF-8 character sets.  The speed improvement is also very
+  pronounced with case-insensitive matches.
+
+** Bug fixes
+
+  Character classes would malfunction in multi-byte locales when using grep -i.
+  Examples which would print nothing for LC_ALL=en_US.UTF-8 include:
+  - for ranges, echo Z | grep -i '[a-z]'
+  - for single characters, echo Y | grep -i '[y]'
+  - for character types, echo Y | grep -i '[[:lower:]]'
+
+  grep -i -o would fail to report some matches; grep -i --color, while not
+  missing any line containing a match, would fail to color some matches.
+
+  grep would fail to report a match in a multibyte character set other than
+  UTF-8, if another match occurred earlier in the line but started in the
+  middle of a multibyte character.
+
+  Various bugs in grep -P, caused by expressions such as [^b] or \S matching
+  newlines, were fixed.  grep -P also supports the special sequences \Z and
+  \z, and can be combined with the command-line option -z to perform searches
+  on NUL-separated records.
+
+  grep would mistakenly exit with status 1 upon error, rather than 2,
+  as it is documented to do.
+
+  Using options like -1 -2 or -1 -v -2 results in two lines of
+  context (the last value that appears on the command line) instead
+  twelve (the concatenation of all the values).  This is consistent
+  with the behavior of options -A/-B/-C.
+
+  Two new command-line options, --group-separator=ARGUMENT and
+  --no-group-separator, enable further customization of the output
+  when -A, -B or -C is being used.
+
+** Other changes
+
+  egrep accepts the -E option and fgrep accepts the -F option.  If egrep
+  and fgrep are given another of the -E/-F/-G options, they print a more
+  meaningful error message.
+
+* Noteworthy changes in release 2.5.4 (2009-02-10) [stable]
+
+  - This is a bugfix release. No new features.
+
+Version 2.5.3
+  - The new option --exclude-dir allows to specify a directory pattern that
+    will be excluded from recursive grep.
+  - Numerous bug fixes
+
+Version 2.5.1
+  - This is a bugfix release. No new features.
+
+Version 2.5
+  - The new option --label allows to specify a different name for input
+    from stdin. See the man or info pages for details.
+
+  - The internal lib/getopt* files are no longer used on systems providing
+    getopt functionality in their libc (e.g. glibc 2.2.x).
+    If you need the old getopt files, use --with-included-getopt.
+
+  - The new option --only-matching (-o) will print only the part of matching
+    lines that matches the pattern. This is useful, for example, to extract
+    IP addresses from log files.
+
+  - i18n bug fixed ([A-Z0-9] wouldn't match A in locales other than C on
+    systems using recent glibc builds
+
+  - GNU grep can now be built with autoconf 2.52.
+
+  - The new option --devices controls how grep handles device files. Its usage
+    is analogous to --directories.
+
+  - The new option --line-buffered fflush on everyline.  There is a noticeable
+    slow down when forcing line buffering.
+
+  - Back-references are now local to the regex.
+    grep -e '\(a\)\1' -e '\(b\)\1'
+    The last backref \1 in the second expression refer to \(b\)
+
+  - The new option --include=PATTERN will search only matching files
+    when recursing in directories
+
+  - The new option --exclude=PATTERN will skip matching files when
+    recursing in directories.
+
+  - The new option --color will use the environment variable GREP_COLOR
+    (default is red) to highlight the matching string.
+    --color takes an optional argument specifying when to colorize a line:
+      --color=always, --color=tty, --color=never
+
+  - The following changes are for POSIX conformance:
+
+    . The -q or --quiet or --silent option now causes grep to exit
+      with zero status when a input line is selected, even if an error
+      also occurs.
+
+    . The -s or --no-messages option no longer affects the exit status.
+
+    . Bracket regular expressions like [a-z] are now locale-dependent.
+      For example, many locales sort characters in dictionary order,
+      and in these locales the regular expression [a-d] is not
+      equivalent to [abcd]; it might be equivalent to [aBbCcDd], for
+      example.  To obtain the traditional interpretation of bracket
+      expressions, you can use the C locale by setting the LC_ALL
+      environment variable to the value "C".
+
+  - The -C or --context option now requires an argument, partly for
+    consistency, and partly because POSIX recommends against
+    optional arguments.
+
+  - The new -P or --perl-regexp option tells grep to interpret the pattern as
+    a Perl regular expression.
+
+  - The new option --max-count=num makes grep stop reading a file after num
+    matching lines.
+    New option -m; equivalent to --max-count.
+
+  - Translations for bg, ca, da, nb and tr have been added.
+
+Version 2.4.2
+
+  - Added more check in configure to default the grep-${version}/src/regex.c
+    instead of the one in GNU Lib C.
+
+Version 2.4.1
+
+  - If the final byte of an input file is not a newline, grep now silently
+    supplies one.
+
+  - The new option --binary-files=TYPE makes grep assume that a binary input
+    file is of type TYPE.
+    --binary-files='binary' (the default) outputs a 1-line summary of matches.
+    --binary-files='without-match' assumes binary files do not match.
+    --binary-files='text' treats binary files as text
+        (equivalent to the -a or --text option).
+
+  - New option -I; equivalent to --binary-files='without-match'.
+
+Version 2.4:
+
+  - egrep is now equivalent to 'grep -E' as required by POSIX,
+    removing a longstanding source of confusion and incompatibility.
+    'grep' is now more forgiving about stray '{'s, for backward
+    compatibility with traditional egrep.
+
+  - The lower bound of an interval is not optional.
+    You must use an explicit zero, e.g. 'x{0,10}' instead of 'x{,10}'.
+    (The old documentation incorrectly claimed that it was optional.)
+
+  - The --revert-match option has been renamed to --invert-match.
+
+  - The --fixed-regexp option has been renamed to --fixed-strings.
+
+  - New option -H or --with-filename.
+
+  - New option --mmap.  By default, GNU grep now uses read instead of mmap.
+    This is faster on some hosts, and is safer on all.
+
+  - The new option -z or --null-data causes 'grep' to treat a zero byte
+    (the ASCII NUL character) as a line terminator in input data, and
+    to treat newlines as ordinary data.
+
+  - The new option -Z or --null causes 'grep' to output a zero byte
+    instead of the normal separator after a file name.
+
+  - These two options can be used with commands like 'find -print0',
+    'perl -0', 'sort -z', and 'xargs -0' to process arbitrary file names,
+    even those that contain newlines.
+
+  - The environment variable GREP_OPTIONS specifies default options;
+    e.g. GREP_OPTIONS='--directories=skip' reestablishes grep 2.1's
+    behavior of silently skipping directories.
+
+  - You can specify a matcher multiple times without error, e.g.
+    'grep -E -E' or 'fgrep -F'.  It is still an error to specify
+    conflicting matchers.
+
+  - -u and -U are now allowed on non-DOS hosts, and have no effect.
+
+  - Modifications of the tests scripts to go around the "Broken Pipe"
+    errors from bash. See Bash FAQ.
+
+  - New option -r or --recursive or --directories=recurse.
+    (This option was also in grep 2.3, but wasn't announced here.)
+
+  - --without-included-regex disable, was causing bogus reports .i.e
+    doing more harm then good.
+
+Version 2.3:
+
+  - When searching a binary file FOO, grep now just reports
+    "Binary file FOO matches" instead of outputting binary data.
+    This is typically more useful than the old behavior,
+    and it is also more consistent with other utilities like 'diff'.
+    A file is considered to be binary if it contains a NUL (i.e. zero) byte.
+
+    The new -a or --text option causes 'grep' to assume that all
+    input is text.  (This option has the same meaning as with 'diff'.)
+    Use it if you want binary data in your output.
+
+  - 'grep' now searches directories just like ordinary files; it no longer
+    silently skips directories.  This is the traditional behavior of
+    Unix text utilities (in particular, of traditional 'grep').
+    Hence 'grep PATTERN DIRECTORY' should report
+    "grep: DIRECTORY: Is a directory" on hosts where the operating system
+    does not permit programs to read directories directly, and
+    "grep: DIRECTORY: Binary file matches" (or nothing) otherwise.
+
+    The new -d ACTION or --directories=ACTION option affects directory handling.
+    '-d skip' causes 'grep' to silently skip directories, as in grep 2.1;
+    '-d read' (the default) causes 'grep' to read directories if possible,
+    as in earlier versions of grep.
+
+  - The MS-DOS and Microsoft Windows ports now behave identically to the
+    GNU and Unix ports with respect to binary files and directories.
+
+Version 2.2:
+
+Bug fix release.
+
+  - Status error number fix.
+  - Skipping directories removed.
+  - Many typos fix.
+  - -f /dev/null fix(not to consider as an empty pattern).
+  - Checks for wctype/wchar.
+  - -E was using the wrong matcher fix.
+  - bug in regex char class fix
+  - Fixes for DJGPP
+
+Version 2.1:
+
+This is a bug fix release(see Changelog) i.e. no new features.
+
+  - More compliance to GNU standard.
+  - Long options.
+  - Internationalization.
+  - Use automake/autoconf.
+  - Directory hierarchy change.
+  - Sigvec with -e on Linux corrected.
+  - Sigvec with -f on Linux corrected.
+  - Sigvec with the mmap() corrected.
+  - Bug in kwset corrected.
+  - -q, -L and -l stop on first match.
+  - New and improve regex.[ch] from Ulrich Drepper.
+  - New and improve dfa.[ch] from Arnold Robbins.
+  - Prototypes for over zealous C compiler.
+  - Not scanning a file, if it's a directory
+    (cause problems on Sun).
+  - Ported to MS-DOS/MS-Windows with DJGPP tools.
+
+See Changelog for the full story and proper credits.
+
+Version 2.0:
+
+The most important user visible change is that egrep and fgrep have
+disappeared as separate programs into the single grep program mandated
+by POSIX 1003.2.  New options -G, -E, and -F have been added,
+selecting grep, egrep, and fgrep behavior respectively.  For
+compatibility with historical practice, hard links named egrep and
+fgrep are also provided.  See the manual page for details.
+
+In addition, the regular expression facilities described in Posix
+draft 11.2 are now supported, except for internationalization features
+related to locale-dependent collating sequence information.
+
+There is a new option, -L, which is like -l except it lists
+files which don't contain matches.  The reason this option was
+added is because '-l -v' doesn't do what you expect.
+
+Performance has been improved; the amount of improvement is platform
+dependent, but (for example) grep 2.0 typically runs at least 30% faster
+than grep 1.6 on a DECstation using the MIPS compiler.  Where possible,
+grep now uses mmap() for file input; on a Sun 4 running SunOS 4.1 this
+may cut system time by as much as half, for a total reduction in running
+time by nearly 50%.  On machines that don't use mmap(), the buffering
+code has been rewritten to choose more favorable alignments and buffer
+sizes for read().
+
+Portability has been substantially cleaned up, and an automatic
+configure script is now provided.
+
+The internals have changed in ways too numerous to mention.
+People brave enough to reuse the DFA matcher in other programs
+will now have their bravery amply "rewarded", for the interface
+to that file has been completely changed.  Some changes were
+necessary to track the evolution of the regex package, and since
+I was changing it anyway I decided to do a general cleanup.
+
+========================================================================
+Copyright (C) 1992, 1997-2002, 2004-2021 Free Software Foundation, Inc.
+
+  Copying and distribution of this file, with or without modification,
+  are permitted in any medium without royalty provided the copyright
+  notice and this notice are preserved.
+
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the GNU Free Documentation License, Version 1.3 or
+any later version published by the Free Software Foundation; with no
+Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
+Texts.  A copy of the license is included in the "GNU Free
+Documentation License" file as part of this distribution.
diff --git a/src/grep/README b/src/grep/README
new file mode 100644
index 0000000..7991358
--- /dev/null
+++ b/src/grep/README
@@ -0,0 +1,59 @@
+  Copyright (C) 1992, 1997-2002, 2004-2021 Free Software Foundation, Inc.
+
+  Copying and distribution of this file, with or without modification,
+  are permitted in any medium without royalty provided the copyright
+  notice and this notice are preserved.
+
+This is GNU grep, the "fastest grep in the west" (we hope).  All
+bugs reported in previous releases have been fixed.  Many exciting new
+bugs have probably been introduced in this revision.
+
+GNU grep is provided "as is" with no warranty.  The exact terms
+under which you may use and (re)distribute this program are detailed
+in the GNU General Public License, in the file COPYING.
+
+GNU grep is based on a fast lazy-state deterministic matcher (about
+twice as fast as stock Unix egrep) hybridized with a Boyer-Moore-Gosper
+search for a fixed string that eliminates impossible text from being
+considered by the full regexp matcher without necessarily having to
+look at every character.  The result is typically many times faster
+than Unix grep or egrep.  (Regular expressions containing back-references
+will run more slowly, however.)
+
+See the files AUTHORS and THANKS for a list of authors and other contributors.
+
+See the file INSTALL for compilation and installation instructions.
+If there is no INSTALL file, this copy of the source code is intended
+for expert hackers; please see the file README-hacking.
+
+See the file NEWS for a description of major changes in this release.
+
+See the file TODO for ideas on how you could help us improve grep.
+
+See the file README-alpha for information on grep development and the CVS
+  repository.
+
+Send bug reports to bug-grep@gnu.org.
+
+KNOWN BUGS:
+
+Several tests in fmbtest.sh and foad1.sh fail under the cs_CZ.UTF-8 locale
+and have been disabled.
+
+The combination of -o and -i options is broken and the known failing cases
+are disabled in foad1.sh
+
+The option -i does not work properly in some multibyte locales such as
+tr_TR.UTF-8 where the upper case and lower case forms of a character are not
+necessarily of the same byte length.
+
+A list of outstanding and resolved bugs can be found at:
+
+        https://debbugs.gnu.org/cgi/pkgreport.cgi?package=grep
+
+You can also browse the bug-grep mailing list archive at:
+
+        https://lists.gnu.org/r/bug-grep/
+
+For any copyright year range specified as YYYY-ZZZZ in this package
+note that the range specifies every single year in that closed interval.
diff --git a/src/grep/README-alpha b/src/grep/README-alpha
new file mode 100644
index 0000000..829d52a
--- /dev/null
+++ b/src/grep/README-alpha
@@ -0,0 +1,31 @@
+  Copyright (C) 1992, 1997-2002, 2004-2021 Free Software Foundation, Inc.
+
+  Copying and distribution of this file, with or without modification,
+  are permitted in any medium without royalty provided the copyright
+  notice and this notice are preserved.
+
+The development source code is available via Git from Savannah: see
+<https://git.savannah.gnu.org/cgit/grep.git>.  The main project page is at
+<https://savannah.gnu.org/projects/grep/>.
+
+The source code in the Git uses autotools to generate some files. Before
+following the instructions in the INSTALL file for compiling grep, you
+need to run the bootstrap script.
+
+Please submit bug reports to <bug-grep@gnu.org>.
+
+If you are interested in the development of GNU grep, you may want to
+subscribe to the development mailing list.  To subscribe, send an email
+message to <bug-grep-request@gnu.org> with "subscribe" (without the
+quotation marks) in the subject header field (or in the body) of the
+email, or visit <https://lists.gnu.org/mailman/listinfo/bug-grep>.
+
+To follow development more closely, there is also the grep-commit mailing
+list to which log entries (one per commit) and diff output (one per
+modified file) from CVS are automatically sent.  To subscribe, send an
+email message to <grep-commit-request@gnu.org> with "subscribe" (without
+the quotation marks) in the subject header field (or in the body) of
+the email, or visit <https://lists.gnu.org/mailman/listinfo/grep-commit>.
+
+A web page containing information for GNU grep developers is at
+<https://www.gnu.org/software/grep/devel.html>.
diff --git a/src/grep/THANKS b/src/grep/THANKS
new file mode 100644
index 0000000..2583cfa
--- /dev/null
+++ b/src/grep/THANKS
@@ -0,0 +1,143 @@
+These people have contributed to the GNU grep. Those contributions are
+described in the version control logs.  If your name has been left out,
+if you'd rather not be listed, or if you'd prefer a different address
+be used, please send a note to the bug-report mailing list (as seen at
+end of e.g., grep --help).
+
+Adam Katz                           savannah@kopis.com
+Aharon Robbins                      arnold@skeeve.com
+Akim Demaille                       akim@epita.fr
+Alain Magloire                      alainm@rcsm.ee.mcgill.ca
+Allan McRae                         allan@archlinux.org
+Andreas Ley                         andy@rz.uni-karlsruhe.de
+Andreas Schwab                      schwab@suse.de
+Arnold D. Robbins                   arnold@skeeve.com
+Arnold Robbins                      arnold@skeeve.com
+Barret Rhoden                       brho@cs.berkeley.edu
+Bastiaan "Darquan" Stougie          darquan@zonnet.nl
+behoffski                           behoffski@grouse.com.au
+Ben Elliston                        bje@cygnus.com
+Benno Schulenberg                   bensberg@justemail.net
+Bernd Strieder                      strieder@student.uni-kl.de
+Bernhard Rosenkraenzer              bero@arklinux.org
+Bernhard Voelker                    mail@bernhard-voelker.de
+Bob Proulx                          rwp@hprwp.fc.hp.com
+Brian Youmans                       3diff@gnu.org
+Bruno Haible                        bruno@clisp.org
+Charles Levert                      charles_levert@gna.org
+Christian Boltz                     grep-bug@cboltz.de
+Christian Groessler                 cpg@aladdin.de
+Corinna Vinschen                    vinschen@redhat.com
+Dagobert Michelsen                  dam@opencsw.org
+Daisuke GOTO                        gotoh@m-design.com
+Dave Reisner                        d@falconindy.com
+David Clissold                      cliss@austin.ibm.com
+David J MacKenzie                   djm@catapult.va.pubnix.com
+David O'Brien                       obrien@freebsd.org
+Dmitry V. Levin                     ldv@altlinux.org
+'Drake' Daham Wang                  drakewang@gmail.com
+Egmont Koblinger                    egmont@gmail.com
+Eli Zaretskii                       eliz@gnu.org
+Eric Blake                          eblake@redhat.com
+Fernando Basso                      fernandobasso.br@gmail.com
+Florian La Roche                    laroche@redhat.com
+François Pinard                     pinard@iro.umontreal.ca
+Gerald Stoller                      gerald_stoller@hotmail.com
+Grant McDorman                      grant@isgtec.com
+Greg Boyd                           gboyd.ccsf@gmail.com
+Greg Louis                          glouis@dynamicro.on.ca
+Guglielmo 'bond' Bondioni           g.bondioni@libero.it
+H. Merijn Brand                     h.m.brand@hccnet.nl
+Hans-Bernhard Broeker               broeker@physik.rwth-aachen.de
+Harald Hanche-Olsen                 hanche@math.ntnu.no
+Heikki Korpela                      heko@iki.fi
+Helge Kreutzmann                    debian@helgefjell.de
+Igor O. Ladygin                     assa@zabtrans.ru
+Ilya Basin                          basinilya@gmail.com
+Isamu Hasegawa                      isamu@yamato.ibm.com
+Jaroslav Å karvada                   jskarvad@redhat.com
+Javier Villavicencio                the_paya@gentoo.org
+Jeff Bailey                         jbailey@nisa.net
+Jim Hand                            jhand@austx.tandem.com
+Jim Meyering                        jim@meyering.net
+Jochen Hein                         jochen.hein@delphi.central.de
+Joel N. Weber II                    devnull@gnu.org
+Johan Walles                        johan.walles@gmail.com
+John Hughes                         john@nitelite.calvacom.fr
+Jorge Stolfi                        stolfi@dcc.unicamp.br
+Juan Manuel Guerrero                juan.guerrero@gmx.de
+Julian Foad                         julianfoad@btopenworld.com
+Karl Berry                          karl@gnu.org
+Karl Heuer                          kwzh@gnu.org
+Kaveh R. Ghazi                      ghazi@caip.rutgers.edu
+Kazuro Furukawa                     furukawa@apricot.kek.jp
+Keith Bostic                        bostic@bsdi.com
+Krishna Sethuraman                  krishna@sgihub.corp.sgi.com
+Kurt D Schwehr                      kdschweh@insci14.ucsd.edu
+Ludovic Courtès                     ludo@gnu.org
+Marc Aldorasi                       m101010a@gmail.com
+Marek Suppa                         mr@shu.io
+Mark Veltzer                        mark.veltzer@gmail.com
+Mark Waite                          markw@mddmew.fc.hp.com
+Martin P.J. Zinser                  zinser@decus.de
+Martin Rex                          martin.rex@sap-ag.de
+Matthew Burgess                     matthew@linuxfromscratch.org
+Michael Aichlmayr                   mikla@nx.com
+Mike Frysinger                      vapier@gentoo.org
+Mike Haertel                        mike@ducky.net
+Miles Bader                         miles@ccs.mt.nec.co.jp
+Mirraz Mirraz                       mirraz1@rambler.ru
+Nelson H. F. Beebe                  beebe@math.utah.edu
+Nicolas Vigier                      boklm@mars-attacks.org
+Nima Aghdaii                        naghdaii@fb.com
+Norihiro Tanaka                     noritnk@kcn.ne.jp
+Olaf Kirch                          okir@ns.lst.de
+Pádraig Brady                       P@draigBrady.com
+Paolo Bonzini                       bonzini@gnu.org
+Patrick Boyd                        pboyd04@gmail.com
+Paul Eggert                         eggert@cs.ucla.edu
+Paul Kimoto                         kimoto@spacenet.tn.cornell.edu
+Péter Radics                        mitchnull@gmail.com
+Petr Písař                          petr.pisar@atlas.cz
+Petr Pisar                          ppisar@redhat.com
+Philip Hazel                        ph10@cus.cam.ac.uk
+Philipp Kohlbecher                  xt28@gmx.de
+Philippe Defert                     Philippe.Defert@cern.ch
+Philippe De Muyter                  phdm@info.ucl.ac.be
+Phillip C. Brisco                   phillip.craig.brisco@ccmail.census.gov
+Rainer Orth                         ro@cebitec.uni-bielefeld.de
+Reuben Thomas                       rrt@sc3d.org
+Roland Roberts                      rroberts@muller.com
+Ruslan Ermilov                      ru@freebsd.org
+Santiago Ruano Rincón               santiago@debian.org
+Santiago Vila                       sanvila@unex.es
+Shannon Hill                        hill@synnet.com
+Sotiris Vassilopoulos               Sotiris.Vassilopoulos@betatech.gr
+Standish Parsley                    adsspamtrap01@yahoo.com
+Stefano Lattarini                   stefano.lattarini@gmail.com
+Stepan Kasal                        kasal@ucw.cz
+Stephan T. Lavavej                  stl@nuwen.net
+Stephane Chazelas                   stephane.chazelas@gmail.com
+Stewart Levin                       stew@sep.stanford.edu
+Strahinja Kustudic                  kustodian@gmail.com
+Sven Joachim                        svenjoac@gmx.de
+Sydoruk Stepan                      step@unitex.kiev.ua
+Tapani Tarvainen                    tt@mit.jyu.fi
+Tim Waugh                           twaugh@redhat.com
+Tom 'moof' Spindler                 dogcow@ccs.neu.edu
+Tom Tromey                          tromey@creche.cygnus.com
+Tony Abou-Assaleh                   taa@acm.org
+UEBAYASHI Masao                     masao@nf.enveng.titech.ac.jp
+Ulrich Drepper                      drepper@cygnus.com
+Uwe H. Steinfeld                    usteinfeld@gmx.net
+Volker Borchert                     bt@teknon.de
+Wichert Akkerman                    wichert@cistron.nl
+William Bader                       william@nscs.fast.net
+Wolfgang Schludi                    schludi@syscomp.de
+Yuliy Pisetsky                      ypisetsky@fb.com
+Zev Weiss                           zev@bewilderbeest.net
+Zoltan Herczeg                      hzmester@freemail.hu
+
+;; Local Variables:
+;; coding: utf-8
+;; End:
diff --git a/src/grep/THANKS.in b/src/grep/THANKS.in
new file mode 100644
index 0000000..9872bfa
--- /dev/null
+++ b/src/grep/THANKS.in
@@ -0,0 +1,102 @@
+These people have contributed to the GNU grep. Those contributions are
+described in the version control logs.  If your name has been left out,
+if you'd rather not be listed, or if you'd prefer a different address
+be used, please send a note to the bug-report mailing list (as seen at
+end of e.g., grep --help).
+##
+## There is no need to list here any name that appears as an Author in
+## "git log" output.  Those are automatically added when this template
+## is used to generate the THANKS file.  Note that numerous people listed
+## here would have been listed as commit authors if we had been using git
+## for version control when they contributed.
+
+Akim Demaille                       akim@epita.fr
+Andreas Schwab                      schwab@suse.de
+Andreas Ley                         andy@rz.uni-karlsruhe.de
+Bastiaan "Darquan" Stougie          darquan@zonnet.nl
+Ben Elliston                        bje@cygnus.com
+Bernd Strieder                      strieder@student.uni-kl.de
+Bob Proulx                          rwp@hprwp.fc.hp.com
+Brian Youmans                       3diff@gnu.org
+Christian Boltz                     grep-bug@cboltz.de
+Christian Groessler                 cpg@aladdin.de
+Dagobert Michelsen                  dam@opencsw.org
+Daisuke GOTO                        gotoh@m-design.com
+Dave Reisner                        d@falconindy.com
+David Clissold                      cliss@austin.ibm.com
+David J MacKenzie                   djm@catapult.va.pubnix.com
+David O'Brien                       obrien@freebsd.org
+'Drake' Daham Wang                  drakewang@gmail.com
+Egmont Koblinger                    egmont@gmail.com
+Fernando Basso                      fernandobasso.br@gmail.com
+Florian La Roche                    laroche@redhat.com
+François Pinard                     pinard@iro.umontreal.ca
+Gerald Stoller                      gerald_stoller@hotmail.com
+Grant McDorman                      grant@isgtec.com
+Greg Boyd                           gboyd.ccsf@gmail.com
+Greg Louis                          glouis@dynamicro.on.ca
+Guglielmo 'bond' Bondioni           g.bondioni@libero.it
+H. Merijn Brand                     h.m.brand@hccnet.nl
+Harald Hanche-Olsen                 hanche@math.ntnu.no
+Hans-Bernhard Broeker               broeker@physik.rwth-aachen.de
+Heikki Korpela                      heko@iki.fi
+Igor O. Ladygin                     assa@zabtrans.ru
+Ilya Basin                          basinilya@gmail.com
+Isamu Hasegawa                      isamu@yamato.ibm.com
+Jeff Bailey                         jbailey@nisa.net
+Jim Hand                            jhand@austx.tandem.com
+Jochen Hein                         jochen.hein@delphi.central.de
+Joel N. Weber II                    devnull@gnu.org
+John Hughes                         john@nitelite.calvacom.fr
+Jorge Stolfi                        stolfi@dcc.unicamp.br
+Karl Heuer                          kwzh@gnu.org
+Kaveh R. Ghazi                      ghazi@caip.rutgers.edu
+Kazuro Furukawa                     furukawa@apricot.kek.jp
+Keith Bostic                        bostic@bsdi.com
+Krishna Sethuraman                  krishna@sgihub.corp.sgi.com
+Kurt D Schwehr                      kdschweh@insci14.ucsd.edu
+Ludovic Courtès                     ludo@gnu.org
+Marc Aldorasi                       m101010a@gmail.com
+Mark Waite                          markw@mddmew.fc.hp.com
+Martin P.J. Zinser                  zinser@decus.de
+Martin Rex                          martin.rex@sap-ag.de
+Michael Aichlmayr                   mikla@nx.com
+Miles Bader                         miles@ccs.mt.nec.co.jp
+Mirraz Mirraz                       mirraz1@rambler.ru
+Nelson H. F. Beebe                  beebe@math.utah.edu
+Nima Aghdaii                        naghdaii@fb.com
+Olaf Kirch                          okir@ns.lst.de
+Paul Kimoto                         kimoto@spacenet.tn.cornell.edu
+Péter Radics                        mitchnull@gmail.com
+Phillip C. Brisco                   phillip.craig.brisco@ccmail.census.gov
+Philipp Kohlbecher                  xt28@gmx.de
+Philippe Defert                     Philippe.Defert@cern.ch
+Philippe De Muyter                  phdm@info.ucl.ac.be
+Philip Hazel                        ph10@cus.cam.ac.uk
+Rainer Orth                         ro@cebitec.uni-bielefeld.de
+Roland Roberts                      rroberts@muller.com
+Ruslan Ermilov                      ru@freebsd.org
+Santiago Vila                       sanvila@unex.es
+Shannon Hill                        hill@synnet.com
+Sotiris Vassilopoulos               Sotiris.Vassilopoulos@betatech.gr
+Standish Parsley                    adsspamtrap01@yahoo.com
+Stewart Levin                       stew@sep.stanford.edu
+Strahinja Kustudic                  kustodian@gmail.com
+Sven Joachim                        svenjoac@gmx.de
+Sydoruk Stepan                      step@unitex.kiev.ua
+Tapani Tarvainen                    tt@mit.jyu.fi
+Tim Waugh                           twaugh@redhat.com
+Tom 'moof' Spindler                 dogcow@ccs.neu.edu
+Tom Tromey                          tromey@creche.cygnus.com
+Ulrich Drepper                      drepper@cygnus.com
+UEBAYASHI Masao                     masao@nf.enveng.titech.ac.jp
+Uwe H. Steinfeld                    usteinfeld@gmx.net
+Volker Borchert                     bt@teknon.de
+Wichert Akkerman                    wichert@cistron.nl
+William Bader                       william@nscs.fast.net
+Wolfgang Schludi                    schludi@syscomp.de
+Zoltan Herczeg                      hzmester@freemail.hu
+
+;; Local Variables:
+;; coding: utf-8
+;; End:
diff --git a/src/grep/TODO b/src/grep/TODO
new file mode 100644
index 0000000..5211ac1
--- /dev/null
+++ b/src/grep/TODO
@@ -0,0 +1,339 @@
+Things to do for GNU grep
+
+  Copyright (C) 1992, 1997-2002, 2004-2021 Free Software Foundation, Inc.
+
+  Copying and distribution of this file, with or without modification,
+  are permitted in any medium without royalty provided the copyright
+  notice and this notice are preserved.
+
+===============
+Short term work
+===============
+
+See where we are with UTF-8 performance.
+
+Merge Debian patches that seem relevant.
+
+Go through patches in Savannah.
+
+Fix --directories=read.
+
+Write better Texinfo documentation for grep.  The manual page would be a
+good place to start, but Info documents are also supposed to contain a
+tutorial and examples.
+
+Some tests in tests/spencer2.tests should have failed!  Need to filter out
+some bugs in dfa.[ch]/regex.[ch].
+
+Multithreading?
+
+GNU grep originally did 32-bit arithmetic.  Although it has moved to
+64-bit on 64-bit platforms by using types like ptrdiff_t and size_t,
+this conversion has not been entirely systematic and should be checked.
+
+Lazy dynamic linking of libpcre.  See Debian’s 03-397262-dlopen-pcre.patch.
+
+Check FreeBSD’s integration of zgrep (-Z) and bzgrep (-J) in one
+binary.  Is there a possibility of doing even better by automatically
+checking the magic of binary files ourselves (0x1F 0x8B for gzip, 0x1F
+0x9D for compress, and 0x42 0x5A 0x68 for bzip2)?  Once what to do with
+libpcre is decided, do the same for libz and libbz2.
+
+
+===================
+Matching algorithms
+===================
+
+Take a look at these and consider opportunities for merging or cloning:
+
+   -- http://osrd.org/projects/grep/global-regular-expression-print-tools-grep-variants
+   -- ja-grep’s mlb2 patch (Japanese grep)
+      <http://distcache.freebsd.org/ports-distfiles/grep-2.4.2-mlb2.patch.gz>
+   -- lgrep (from lv, a Powerful Multilingual File Viewer / Grep)
+      <http://www.mt.cs.keio.ac.jp/person/narita/lv/>;
+   -- cgrep (Context grep) <https://awgn.github.io/cgrep/>
+      seems like nice work;
+   -- sgrep (Struct grep) <https://www.cs.helsinki.fi/u/jjaakkol/sgrep.html>;
+   -- agrep (Approximate grep) <https://www.tgries.de/agrep/>,
+      from glimpse;
+   -- nr-grep (Nondeterministic reverse grep)
+      <https://www.dcc.uchile.cl/~gnavarro/software/>;
+   -- ggrep (Grouse grep) <http://www.grouse.com.au/ggrep/>;
+   -- freegrep <https://github.com/howardjp/freegrep>;
+
+Check some new algorithms for matching.  See, for example, Faro &
+Lecroq (cited in kwset.c).
+
+Fix the DFA matcher to never use exponential space.  (Fortunately, these
+cases are rare.)
+
+
+============================
+Standards: POSIX and Unicode
+============================
+
+For POSIX compliance issues, see POSIX 1003.1.
+
+Current support for the POSIX [= =] and [. .] constructs is limited to
+platforms whose regular expression matchers are sufficiently
+compatible with the GNU C library so that the --without-included-regex
+option of ‘configure’ is in effect.  Extend this support to non-glibc
+platforms, where --with-included-regex is in effect, by modifying the
+included version of the regex code to defer to the native version when
+handling [= =] and [. .].
+
+For Unicode, interesting things to check include the Unicode Standard
+<https://www.unicode.org/standard/standard.html> and the Unicode Technical
+Standard #18 (<https://www.unicode.org/reports/tr18/> “Unicode Regular
+Expressions�).  Talk to Bruno Haible who’s maintaining GNU libunistring.
+See also Unicode Standard Annex #15 (<https://www.unicode.org/reports/tr15/>
+“Unicode Normalization Forms�), already implemented by GNU libunistring.
+
+In particular, --ignore-case needs to be evaluated against the standards.
+We may want to deviate from POSIX if Unicode provides better or clearer
+semantics.
+
+POSIX and --ignore-case
+-----------------------
+
+For this issue, interesting things to check in POSIX include the
+Open Group Base Specifications, Chapter “Regular Expressions�, in
+particular Section “Regular Expression General Requirements� and its
+paragraph about caseless matching (this may not have been fully
+thought through and that this text may be self-contradicting
+[specifically: “of either data or patterns� versus all the rest]).
+See:
+
+http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_02
+
+In particular, consider the following with POSIX’s approach to case
+folding in mind.  Assume a non-Turkic locale with a character
+repertoire reduced to the following various forms of “LATIN LETTER I�:
+
+  0049;LATIN CAPITAL LETTER I;Lu;0;L;;;;;N;;;;0069;
+  0069;LATIN SMALL LETTER I;Ll;0;L;;;;;N;;;0049;;0049
+  0130;LATIN CAPITAL LETTER I WITH DOT ABOVE;Lu;0;L;0049 0307;;;;N;\
+    LATIN CAPITAL LETTER I DOT;;;0069;
+  0131;LATIN SMALL LETTER DOTLESS I;Ll;0;L;;;;;N;;;0049;;0049
+
+UTF-8 octet lengths differ between U+0049 (0x49) and U+0069 (0x69)
+versus U+0130 (0xC4 0xB0) and U+0131 (0xC4 0xB1).  This implies that
+whole UTF-8 strings cannot be case-converted in place, using the same
+memory buffer, and that the needed octet-size of the new buffer cannot
+merely be guessed (although there’s a simple upper bound of five times
+the size of the input, as the longest UTF-8 encoding of any character
+is five bytes).
+
+We have
+
+  lc(I) = i, uc(I) = I
+  lc(i) = i, uc(i) = I
+  lc(Ä°) = i, uc(Ä°) = Ä°
+  lc(ı) = ı, uc(ı) = I
+
+where lc() and uc() denote lower-case and upper-case conversions.
+
+There are several candidate --ignore-case logics.  Using the
+
+  if (lc(input_wchar) == lc(pattern_wchar))
+
+logic leads to the following matches:
+
+    \in  I  i  İ  ı
+  pat\   ----------
+   I  |  Y  Y  Y  n
+   i  |  Y  Y  Y  n
+   Ä°  |  Y  Y  Y  n
+   ı  |  n  n  n  Y
+
+There is a lack of symmetry between CAPITAL and SMALL LETTERs with
+this.  Using the
+
+  if (uc(input_wchar) == uc(pattern_wchar))
+
+logic (which is what GNU grep currently does although this is not
+documented or guaranteed in the future), leads to the following
+matches:
+
+    \in  I  i  İ  ı
+  pat\   ----------
+   I  |  Y  Y  n  Y
+   i  |  Y  Y  n  Y
+   Ä°  |  n  n  Y  n
+   ı  |  Y  Y  n  Y
+
+There is a lack of symmetry between CAPITAL and SMALL LETTERs with
+this.
+
+Using the
+
+  if (lc(input_wchar) == lc(pattern_wchar)
+      || uc(input_wchar) == uc(pattern_wchar))
+
+logic leads to the following matches:
+
+    \in  I  i  İ  ı
+  pat\   ----------
+   I  |  Y  Y  Y  Y
+   i  |  Y  Y  Y  Y
+   Ä°  |  Y  Y  Y  n
+   ı  |  Y  Y  n  Y
+
+There is some elegance and symmetry with this.  But there are
+potentially two conversions to be made per input character.  If the
+pattern is pre-converted, two copies of it need to be kept and used in
+a mutually coherent fashion.
+
+Using the
+
+  if (input_wchar  == pattern_wchar
+      || lc(input_wchar) == pattern_wchar
+      || uc(input_wchar) == pattern_wchar)
+
+logic (a plausible interpretation of POSIX) leads to the following
+matches:
+
+    \in  I  i  İ  ı
+  pat\   ----------
+   I  |  Y  Y  n  Y
+   i  |  Y  Y  Y  n
+   Ä°  |  n  n  Y  n
+   ı  |  n  n  n  Y
+
+There is a different CAPITAL/SMALL symmetry with this.  But there’s
+also a loss of pattern/input symmetry that’s unique to it.  Also there
+are potentially two conversions to be made per input character.
+
+Using the
+
+  if (lc(uc(input_wchar)) == lc(uc(pattern_wchar)))
+
+logic leads to the following matches:
+
+    \in  I  i  İ  ı
+  pat\   ----------
+   I  |  Y  Y  Y  Y
+   i  |  Y  Y  Y  Y
+   Ä°  |  Y  Y  Y  Y
+   ı  |  Y  Y  Y  Y
+
+This shows total symmetry and transitivity (at least in this example
+analysis).  There are two conversions to be made per input character,
+but support could be added for having a single straight mapping
+performing a composition of the two conversions.
+
+Any optimization in the implementation of each logic must not change
+its basic semantic.
+
+
+Unicode and --ignore-case
+-------------------------
+
+For this issue, interesting things to check in Unicode include:
+
+  - The Unicode Standard, Chapter 3
+    (<https://www.unicode.org/versions/Unicode9.0.0/ch03.pdf>
+    “Conformance�), Section 3.13 (“Default Case Algorithms�) and the
+    toCasefold() case conversion operation.
+
+  - The Unicode Standard, Chapter 4
+    (<https://www.unicode.org/versions/Unicode9.0.0/ch04.pdf>
+    “Character Properties�), Section 4.2 (“Case�) and
+    the <https://www.unicode.org/Public/UNIDATA/SpecialCasing.txt>
+    SpecialCasing.txt and
+    <https://www.unicode.org/Public/UNIDATA/CaseFolding.txt>
+    CaseFolding.txt files.
+
+  - The Unicode Standard, Chapter 5
+    (<https://www.unicode.org/versions/Unicode9.0.0/ch05.pdf>
+    “Implementation Guidelines�), Section 5.18 (“Case Mappings�),
+    Subsection “Caseless Matching�.
+
+  - The Unicode case charts <https://www.unicode.org/charts/case/>.
+
+Unicode uses the
+
+  if (toCasefold(input_wchar_string) == toCasefold(pattern_wchar_string))
+
+logic for caseless matching.  Consider the “LATIN LETTER I� example
+mentioned above.  In a non-Turkic locale, simple case folding yields
+
+  toCasefold_simple(U+0049) = U+0069
+  toCasefold_simple(U+0069) = U+0069
+  toCasefold_simple(U+0130) = U+0130
+  toCasefold_simple(U+0131) = U+0131
+
+which leads to the following matches:
+
+    \in  I  i  İ  ı
+  pat\   ----------
+   I  |  Y  Y  n  n
+   i  |  Y  Y  n  n
+   Ä°  |  n  n  Y  n
+   ı  |  n  n  n  Y
+
+This is different from anything so far!
+
+In a non-Turkic locale, full case folding yields
+
+  toCasefold_full(U+0049) = U+0069
+  toCasefold_full(U+0069) = U+0069
+  toCasefold_full(U+0130) = <U+0069, U+0307>
+  toCasefold_full(U+0131) = U+0131
+
+with
+
+  0307;COMBINING DOT ABOVE;Mn;230;NSM;;;;;N;NON-SPACING DOT ABOVE;;;;
+
+which leads to the following matches:
+
+    \in  I  i  İ  ı
+  pat\   ----------
+   I  |  Y  Y  *  n
+   i  |  Y  Y  *  n
+   Ä°  |  n  n  Y  n
+   ı  |  n  n  n  Y
+
+This is just sad!
+
+Having toCasefold(U+0131), simple or full, map to itself instead of
+U+0069 is in contradiction with the rules of Section 5.18 of the
+Unicode Standard since toUpperCase(U+0131) is U+0049.  Same thing for
+toCasefold_simple(U+0130) since toLowerCase(U+0131) is U+0069.  The
+justification for the weird toCasefold_full(U+0130) mapping is
+unknown; it doesn’t even make sense to add a dot (U+0307) to a letter
+that already has one (U+0069).  It would have been so simple to put
+them all in the same equivalence class!
+
+Otherwise, also consider the following problem with Unicode’s approach
+on case folding in mind.  Assume that we want to perform
+
+  echo 'AßBC' | grep -i 'Sb'
+
+which corresponds to
+
+  input:    U+0041 U+00DF U+0042 U+0043 U+000A
+  pattern:  U+0053 U+0062
+
+Following CaseFolding.txt, applying the toCasefold() transformation to
+these yields
+
+  input:    U+0061 U+0073 U+0073 U+0062 U+0063 U+000A
+  pattern:                U+0073 U+0062
+
+so, according to this approach, the input should match the pattern.
+As long as the original input line is to be reported to the user as a
+whole, there is no problem (from the user’s point-of-view;
+implementation is complicated by this).
+
+However, consider both these GNU extensions:
+
+  echo 'AßBC' | grep -i --only-matching 'Sb'
+  echo 'AßBC' | grep -i --color=always  'Sb'
+
+What is to be reported in these cases, since the match begins in the
+*middle* of the original input character ‘ß’?
+
+Unicode’s toCasefold() cannot be implemented in terms of POSIX’s
+towctrans() since that can only return a single wint_t value per input
+wint_t value.
diff --git a/src/grep/aclocal.m4 b/src/grep/aclocal.m4
new file mode 100644
index 0000000..f424ccf
--- /dev/null
+++ b/src/grep/aclocal.m4
@@ -0,0 +1,1381 @@
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+    echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+    # We check with '-c' and '-o' for the sake of the "dashmstdout"
+    # mode.  It turns out that the SunPro C++ compiler does not properly
+    # handle '-M -o', and we need to detect this.  Also, some Intel
+    # versions had trouble with output in subdirs.
+    am__obj=sub/conftest.${OBJEXT-o}
+    am__minus_obj="-o $am__obj"
+    case $depmode in
+    gcc)
+      # This depmode causes a compiler race in universal mode.
+      test "$am__universal" = false || continue
+      ;;
+    nosideeffect)
+      # After this tag, mechanisms are not by side-effect, so they'll
+      # only be used when explicitly requested.
+      if test "x$enable_dependency_tracking" = xyes; then
+	continue
+      else
+	break
+      fi
+      ;;
+    msvc7 | msvc7msys | msvisualcpp | msvcmsys)
+      # This compiler won't grok '-c -o', but also, the minuso test has
+      # not run yet.  These depmodes are late enough in the game, and
+      # so weak that their functioning should not be impacted.
+      am__obj=conftest.${OBJEXT-o}
+      am__minus_obj=
+      ;;
+    none) break ;;
+    esac
+    if depmode=$depmode \
+       source=sub/conftest.c object=$am__obj \
+       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+       $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+         >/dev/null 2>conftest.err &&
+       grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+       ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+      # icc doesn't choke on unknown options, it will just issue warnings
+      # or remarks (even with -Werror).  So we grep stderr for any message
+      # that says an option was ignored or not supported.
+      # When given -MP, icc 7.0 and 7.1 complain thusly:
+      #   icc: Command line warning: ignoring option '-M'; no argument required
+      # The diagnosis changed in icc 8.0:
+      #   icc: Command line remark: option '-MP' not supported
+      if (grep 'ignoring option' conftest.err ||
+          grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+        am_cv_$1_dependencies_compiler_type=$depmode
+        break
+      fi
+    fi
+  done
+
+  cd ..
+  rm -rf conftest.dir
+else
+  am_cv_$1_dependencies_compiler_type=none
+fi
+])
+AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
+AM_CONDITIONAL([am__fastdep$1], [
+  test "x$enable_dependency_tracking" != xno \
+  && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
+])
+
+
+# AM_SET_DEPDIR
+# -------------
+# Choose a directory name for dependency files.
+# This macro is AC_REQUIREd in _AM_DEPENDENCIES.
+AC_DEFUN([AM_SET_DEPDIR],
+[AC_REQUIRE([AM_SET_LEADING_DOT])dnl
+AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
+])
+
+
+# AM_DEP_TRACK
+# ------------
+AC_DEFUN([AM_DEP_TRACK],
+[AC_ARG_ENABLE([dependency-tracking], [dnl
+AS_HELP_STRING(
+  [--enable-dependency-tracking],
+  [do not reject slow dependency extractors])
+AS_HELP_STRING(
+  [--disable-dependency-tracking],
+  [speeds up one-time build])])
+if test "x$enable_dependency_tracking" != xno; then
+  am_depcomp="$ac_aux_dir/depcomp"
+  AMDEPBACKSLASH='\'
+  am__nodep='_no'
+fi
+AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
+AC_SUBST([AMDEPBACKSLASH])dnl
+_AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
+AC_SUBST([am__nodep])dnl
+_AM_SUBST_NOTMAKE([am__nodep])dnl
+])
+
+# Generate code to set up dependency tracking.              -*- Autoconf -*-
+
+# Copyright (C) 1999-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_OUTPUT_DEPENDENCY_COMMANDS
+# ------------------------------
+AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
+[{
+  # Older Autoconf quotes --file arguments for eval, but not when files
+  # are listed without --file.  Let's play safe and only enable the eval
+  # if we detect the quoting.
+  # TODO: see whether this extra hack can be removed once we start
+  # requiring Autoconf 2.70 or later.
+  AS_CASE([$CONFIG_FILES],
+          [*\'*], [eval set x "$CONFIG_FILES"],
+          [*], [set x $CONFIG_FILES])
+  shift
+  # Used to flag and report bootstrapping failures.
+  am_rc=0
+  for am_mf
+  do
+    # Strip MF so we end up with the name of the file.
+    am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
+    # Check whether this is an Automake generated Makefile which includes
+    # dependency-tracking related rules and includes.
+    # Grep'ing the whole file directly is not great: AIX grep has a line
+    # limit of 2048, but all sed's we know have understand at least 4000.
+    sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
+      || continue
+    am_dirpart=`AS_DIRNAME(["$am_mf"])`
+    am_filepart=`AS_BASENAME(["$am_mf"])`
+    AM_RUN_LOG([cd "$am_dirpart" \
+      && sed -e '/# am--include-marker/d' "$am_filepart" \
+        | $MAKE -f - am--depfiles]) || am_rc=$?
+  done
+  if test $am_rc -ne 0; then
+    AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
+    for automatic dependency tracking.  If GNU make was not used, consider
+    re-running the configure script with MAKE="gmake" (or whatever is
+    necessary).  You can also try re-running configure with the
+    '--disable-dependency-tracking' option to at least be able to build
+    the package (albeit without support for automatic dependency tracking).])
+  fi
+  AS_UNSET([am_dirpart])
+  AS_UNSET([am_filepart])
+  AS_UNSET([am_mf])
+  AS_UNSET([am_rc])
+  rm -f conftest-deps.mk
+}
+])# _AM_OUTPUT_DEPENDENCY_COMMANDS
+
+
+# AM_OUTPUT_DEPENDENCY_COMMANDS
+# -----------------------------
+# This macro should only be invoked once -- use via AC_REQUIRE.
+#
+# This code is only required when automatic dependency tracking is enabled.
+# This creates each '.Po' and '.Plo' makefile fragment that we'll need in
+# order to bootstrap the dependency handling code.
+AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
+[AC_CONFIG_COMMANDS([depfiles],
+     [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
+     [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
+
+# Do all the work for Automake.                             -*- Autoconf -*-
+
+# Copyright (C) 1996-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This macro actually does too much.  Some checks are only needed if
+# your package does certain things.  But this isn't really a big deal.
+
+dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
+m4_define([AC_PROG_CC],
+m4_defn([AC_PROG_CC])
+[_AM_PROG_CC_C_O
+])
+
+# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
+# AM_INIT_AUTOMAKE([OPTIONS])
+# -----------------------------------------------
+# The call with PACKAGE and VERSION arguments is the old style
+# call (pre autoconf-2.50), which is being phased out.  PACKAGE
+# and VERSION should now be passed to AC_INIT and removed from
+# the call to AM_INIT_AUTOMAKE.
+# We support both call styles for the transition.  After
+# the next Automake release, Autoconf can make the AC_INIT
+# arguments mandatory, and then we can depend on a new Autoconf
+# release and drop the old call support.
+AC_DEFUN([AM_INIT_AUTOMAKE],
+[AC_PREREQ([2.65])dnl
+dnl Autoconf wants to disallow AM_ names.  We explicitly allow
+dnl the ones we care about.
+m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
+AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
+AC_REQUIRE([AC_PROG_INSTALL])dnl
+if test "`cd $srcdir && pwd`" != "`pwd`"; then
+  # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
+  # is not polluted with repeated "-I."
+  AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
+  # test to see if srcdir already configured
+  if test -f $srcdir/config.status; then
+    AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
+  fi
+fi
+
+# test whether we have cygpath
+if test -z "$CYGPATH_W"; then
+  if (cygpath --version) >/dev/null 2>/dev/null; then
+    CYGPATH_W='cygpath -w'
+  else
+    CYGPATH_W=echo
+  fi
+fi
+AC_SUBST([CYGPATH_W])
+
+# Define the identity of the package.
+dnl Distinguish between old-style and new-style calls.
+m4_ifval([$2],
+[AC_DIAGNOSE([obsolete],
+             [$0: two- and three-arguments forms are deprecated.])
+m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
+ AC_SUBST([PACKAGE], [$1])dnl
+ AC_SUBST([VERSION], [$2])],
+[_AM_SET_OPTIONS([$1])dnl
+dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
+m4_if(
+  m4_ifset([AC_PACKAGE_NAME], [ok]):m4_ifset([AC_PACKAGE_VERSION], [ok]),
+  [ok:ok],,
+  [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
+ AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
+ AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
+
+_AM_IF_OPTION([no-define],,
+[AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
+ AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
+
+# Some tools Automake needs.
+AC_REQUIRE([AM_SANITY_CHECK])dnl
+AC_REQUIRE([AC_ARG_PROGRAM])dnl
+AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
+AM_MISSING_PROG([AUTOCONF], [autoconf])
+AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
+AM_MISSING_PROG([AUTOHEADER], [autoheader])
+AM_MISSING_PROG([MAKEINFO], [makeinfo])
+AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
+AC_REQUIRE([AC_PROG_MKDIR_P])dnl
+# For better backward compatibility.  To be removed once Automake 1.9.x
+# dies out for good.  For more background, see:
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
+AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
+# We need awk for the "check" target (and possibly the TAP driver).  The
+# system "awk" is bad on some platforms.
+AC_REQUIRE([AC_PROG_AWK])dnl
+AC_REQUIRE([AC_PROG_MAKE_SET])dnl
+AC_REQUIRE([AM_SET_LEADING_DOT])dnl
+_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
+	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
+			     [_AM_PROG_TAR([v7])])])
+_AM_IF_OPTION([no-dependencies],,
+[AC_PROVIDE_IFELSE([AC_PROG_CC],
+		  [_AM_DEPENDENCIES([CC])],
+		  [m4_define([AC_PROG_CC],
+			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
+AC_PROVIDE_IFELSE([AC_PROG_CXX],
+		  [_AM_DEPENDENCIES([CXX])],
+		  [m4_define([AC_PROG_CXX],
+			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
+AC_PROVIDE_IFELSE([AC_PROG_OBJC],
+		  [_AM_DEPENDENCIES([OBJC])],
+		  [m4_define([AC_PROG_OBJC],
+			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
+AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
+		  [_AM_DEPENDENCIES([OBJCXX])],
+		  [m4_define([AC_PROG_OBJCXX],
+			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
+])
+# Variables for tags utilities; see am/tags.am
+if test -z "$CTAGS"; then
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+fi
+AC_SUBST([CTAGS])
+if test -z "$ETAGS"; then
+  ETAGS=etags
+fi
+AC_SUBST([ETAGS])
+if test -z "$CSCOPE"; then
+  CSCOPE=cscope
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+AC_SUBST([CSCOPE])
+
+AC_REQUIRE([AM_SILENT_RULES])dnl
+dnl The testsuite driver may need to know about EXEEXT, so add the
+dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
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+AC_CONFIG_COMMANDS_PRE(dnl
+[m4_provide_if([_AM_COMPILER_EXEEXT],
+  [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
+
+# POSIX will say in a future version that running "rm -f" with no argument
+# is OK; and we want to be able to make that assumption in our Makefile
+# recipes.  So use an aggressive probe to check that the usage we want is
+# actually supported "in the wild" to an acceptable degree.
+# See automake bug#10828.
+# To make any issue more visible, cause the running configure to be aborted
+# by default if the 'rm' program in use doesn't match our expectations; the
+# user can still override this though.
+if rm -f && rm -fr && rm -rf; then : OK; else
+  cat >&2 <<'END'
+Oops!
+
+Your 'rm' program seems unable to run without file operands specified
+on the command line, even when the '-f' option is present.  This is contrary
+to the behaviour of most rm programs out there, and not conforming with
+the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
+
+Please tell bug-automake@gnu.org about your system, including the value
+of your $PATH and any error possibly output before this message.  This
+can help us improve future automake versions.
+
+END
+  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
+    echo 'Configuration will proceed anyway, since you have set the' >&2
+    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
+    echo >&2
+  else
+    cat >&2 <<'END'
+Aborting the configuration process, to ensure you take notice of the issue.
+
+You can download and install GNU coreutils to get an 'rm' implementation
+that behaves properly: <https://www.gnu.org/software/coreutils/>.
+
+If you want to complete the configuration process using your problematic
+'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
+to "yes", and re-run configure.
+
+END
+    AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
+  fi
+fi
+dnl The trailing newline in this macro's definition is deliberate, for
+dnl backward compatibility and to allow trailing 'dnl'-style comments
+dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
+])
+
+dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
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+dnl mangled by Autoconf and run in a shell conditional statement.
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+m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
+
+# When config.status generates a header, we must update the stamp-h file.
+# This file resides in the same directory as the config header
+# that is generated.  The stamp files are numbered to have different names.
+
+# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
+# loop where config.status creates the headers, so we can generate
+# our stamp files there.
+AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
+[# Compute $1's index in $config_headers.
+_am_arg=$1
+_am_stamp_count=1
+for _am_header in $config_headers :; do
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+    $_am_arg | $_am_arg:* )
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+    * )
+      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+  esac
+done
+echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
+
+# Copyright (C) 2001-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_INSTALL_SH
+# ------------------
+# Define $install_sh.
+AC_DEFUN([AM_PROG_INSTALL_SH],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+if test x"${install_sh+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+  *)
+    install_sh="\${SHELL} $am_aux_dir/install-sh"
+  esac
+fi
+AC_SUBST([install_sh])])
+
+# Copyright (C) 2003-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Check whether the underlying file-system supports filenames
+# with a leading dot.  For instance MS-DOS doesn't.
+AC_DEFUN([AM_SET_LEADING_DOT],
+[rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+AC_SUBST([am__leading_dot])])
+
+# Check to see how 'make' treats includes.	            -*- Autoconf -*-
+
+# Copyright (C) 2001-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_MAKE_INCLUDE()
+# -----------------
+# Check whether make has an 'include' directive that can support all
+# the idioms we need for our automatic dependency tracking code.
+AC_DEFUN([AM_MAKE_INCLUDE],
+[AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
+cat > confinc.mk << 'END'
+am__doit:
+	@echo this is the am__doit target >confinc.out
+.PHONY: am__doit
+END
+am__include="#"
+am__quote=
+# BSD make does it like this.
+echo '.include "confinc.mk" # ignored' > confmf.BSD
+# Other make implementations (GNU, Solaris 10, AIX) do it like this.
+echo 'include confinc.mk # ignored' > confmf.GNU
+_am_result=no
+for s in GNU BSD; do
+  AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
+  AS_CASE([$?:`cat confinc.out 2>/dev/null`],
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+      [AS_CASE([$s],
+          [BSD], [am__include='.include' am__quote='"'],
+          [am__include='include' am__quote=''])])
+  if test "$am__include" != "#"; then
+    _am_result="yes ($s style)"
+    break
+  fi
+done
+rm -f confinc.* confmf.*
+AC_MSG_RESULT([${_am_result}])
+AC_SUBST([am__include])])
+AC_SUBST([am__quote])])
+
+# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
+
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
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+# AM_MISSING_PROG(NAME, PROGRAM)
+# ------------------------------
+AC_DEFUN([AM_MISSING_PROG],
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+$1=${$1-"${am_missing_run}$2"}
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+
+# AM_MISSING_HAS_RUN
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+if test x"${MISSING+set}" != xset; then
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+  am_missing_run=
+  AC_MSG_WARN(['missing' script is too old or missing])
+fi
+])
+
+# Helper functions for option handling.                     -*- Autoconf -*-
+
+# Copyright (C) 2001-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_MANGLE_OPTION(NAME)
+# -----------------------
+AC_DEFUN([_AM_MANGLE_OPTION],
+[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
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+# _AM_SET_OPTION(NAME)
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+[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
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+# _AM_SET_OPTIONS(OPTIONS)
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+AC_DEFUN([_AM_SET_OPTIONS],
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+# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
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+AC_DEFUN([_AM_IF_OPTION],
+[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
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+# Copyright (C) 1999-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_PROG_CC_C_O
+# ---------------
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+  # Make sure it works both with $CC and with simple cc.
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+  am_cv_prog_cc_c_o=yes
+  for am_i in 1 2; do
+    if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
+         && test -f conftest2.$ac_objext; then
+      : OK
+    else
+      am_cv_prog_cc_c_o=no
+      break
+    fi
+  done
+  rm -f core conftest*
+  unset am_i])
+if test "$am_cv_prog_cc_c_o" != yes; then
+   # Losing compiler, so override with the script.
+   # FIXME: It is wrong to rewrite CC.
+   # But if we don't then we get into trouble of one sort or another.
+   # A longer-term fix would be to have automake use am__CC in this case,
+   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
+   CC="$am_aux_dir/compile $CC"
+fi
+AC_LANG_POP([C])])
+
+# For backward compatibility.
+AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
+
+# Copyright (C) 2001-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_RUN_LOG(COMMAND)
+# -------------------
+# Run COMMAND, save the exit status in ac_status, and log it.
+# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
+AC_DEFUN([AM_RUN_LOG],
+[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
+   ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+   (exit $ac_status); }])
+
+# Check to make sure that the build environment is sane.    -*- Autoconf -*-
+
+# Copyright (C) 1996-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_SANITY_CHECK
+# ---------------
+AC_DEFUN([AM_SANITY_CHECK],
+[AC_MSG_CHECKING([whether build environment is sane])
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name.  Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+  *[[\\\"\#\$\&\'\`$am_lf]]*)
+    AC_MSG_ERROR([unsafe absolute working directory name]);;
+esac
+case $srcdir in
+  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
+    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
+esac
+
+# Do 'set' in a subshell so we don't clobber the current shell's
+# arguments.  Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+   am_has_slept=no
+   for am_try in 1 2; do
+     echo "timestamp, slept: $am_has_slept" > conftest.file
+     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+     if test "$[*]" = "X"; then
+	# -L didn't work.
+	set X `ls -t "$srcdir/configure" conftest.file`
+     fi
+     if test "$[*]" != "X $srcdir/configure conftest.file" \
+	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
+
+	# If neither matched, then we have a broken ls.  This can happen
+	# if, for instance, CONFIG_SHELL is bash and it inherits a
+	# broken ls alias from the environment.  This has actually
+	# happened.  Such a system could not be considered "sane".
+	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
+  alias in your environment])
+     fi
+     if test "$[2]" = conftest.file || test $am_try -eq 2; then
+       break
+     fi
+     # Just in case.
+     sleep 1
+     am_has_slept=yes
+   done
+   test "$[2]" = conftest.file
+   )
+then
+   # Ok.
+   :
+else
+   AC_MSG_ERROR([newly created file is older than distributed files!
+Check your system clock])
+fi
+AC_MSG_RESULT([yes])
+# If we didn't sleep, we still need to ensure time stamps of config.status and
+# generated files are strictly newer.
+am_sleep_pid=
+if grep 'slept: no' conftest.file >/dev/null 2>&1; then
+  ( sleep 1 ) &
+  am_sleep_pid=$!
+fi
+AC_CONFIG_COMMANDS_PRE(
+  [AC_MSG_CHECKING([that generated files are newer than configure])
+   if test -n "$am_sleep_pid"; then
+     # Hide warnings about reused PIDs.
+     wait $am_sleep_pid 2>/dev/null
+   fi
+   AC_MSG_RESULT([done])])
+rm -f conftest.file
+])
+
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_SILENT_RULES([DEFAULT])
+# --------------------------
+# Enable less verbose build rules; with the default set to DEFAULT
+# ("yes" being less verbose, "no" or empty being verbose).
+AC_DEFUN([AM_SILENT_RULES],
+[AC_ARG_ENABLE([silent-rules], [dnl
+AS_HELP_STRING(
+  [--enable-silent-rules],
+  [less verbose build output (undo: "make V=1")])
+AS_HELP_STRING(
+  [--disable-silent-rules],
+  [verbose build output (undo: "make V=0")])dnl
+])
+case $enable_silent_rules in @%:@ (((
+  yes) AM_DEFAULT_VERBOSITY=0;;
+   no) AM_DEFAULT_VERBOSITY=1;;
+    *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
+esac
+dnl
+dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
+dnl do not support nested variable expansions.
+dnl See automake bug#9928 and bug#10237.
+am_make=${MAKE-make}
+AC_CACHE_CHECK([whether $am_make supports nested variables],
+   [am_cv_make_support_nested_variables],
+   [if AS_ECHO([['TRUE=$(BAR$(V))
+BAR0=false
+BAR1=true
+V=1
+am__doit:
+	@$(TRUE)
+.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
+  am_cv_make_support_nested_variables=yes
+else
+  am_cv_make_support_nested_variables=no
+fi])
+if test $am_cv_make_support_nested_variables = yes; then
+  dnl Using '$V' instead of '$(V)' breaks IRIX make.
+  AM_V='$(V)'
+  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
+else
+  AM_V=$AM_DEFAULT_VERBOSITY
+  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
+fi
+AC_SUBST([AM_V])dnl
+AM_SUBST_NOTMAKE([AM_V])dnl
+AC_SUBST([AM_DEFAULT_V])dnl
+AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
+AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
+AM_BACKSLASH='\'
+AC_SUBST([AM_BACKSLASH])dnl
+_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
+])
+
+# Copyright (C) 2001-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_INSTALL_STRIP
+# ---------------------
+# One issue with vendor 'install' (even GNU) is that you can't
+# specify the program used to strip binaries.  This is especially
+# annoying in cross-compiling environments, where the build's strip
+# is unlikely to handle the host's binaries.
+# Fortunately install-sh will honor a STRIPPROG variable, so we
+# always use install-sh in "make install-strip", and initialize
+# STRIPPROG with the value of the STRIP variable (set by the user).
+AC_DEFUN([AM_PROG_INSTALL_STRIP],
+[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+# Installed binaries are usually stripped using 'strip' when the user
+# run "make install-strip".  However 'strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the 'STRIP' environment variable to overrule this program.
+dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
+if test "$cross_compiling" != no; then
+  AC_CHECK_TOOL([STRIP], [strip], :)
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+AC_SUBST([INSTALL_STRIP_PROGRAM])])
+
+# Copyright (C) 2006-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
+# This macro is traced by Automake.
+AC_DEFUN([_AM_SUBST_NOTMAKE])
+
+# AM_SUBST_NOTMAKE(VARIABLE)
+# --------------------------
+# Public sister of _AM_SUBST_NOTMAKE.
+AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
+
+# Check how to create a tarball.                            -*- Autoconf -*-
+
+# Copyright (C) 2004-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_PROG_TAR(FORMAT)
+# --------------------
+# Check how to create a tarball in format FORMAT.
+# FORMAT should be one of 'v7', 'ustar', or 'pax'.
+#
+# Substitute a variable $(am__tar) that is a command
+# writing to stdout a FORMAT-tarball containing the directory
+# $tardir.
+#     tardir=directory && $(am__tar) > result.tar
+#
+# Substitute a variable $(am__untar) that extract such
+# a tarball read from stdin.
+#     $(am__untar) < result.tar
+#
+AC_DEFUN([_AM_PROG_TAR],
+[# Always define AMTAR for backward compatibility.  Yes, it's still used
+# in the wild :-(  We should find a proper way to deprecate it ...
+AC_SUBST([AMTAR], ['$${TAR-tar}'])
+
+# We'll loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
+
+m4_if([$1], [v7],
+  [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
+
+  [m4_case([$1],
+    [ustar],
+     [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
+      # There is notably a 21 bits limit for the UID and the GID.  In fact,
+      # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
+      # and bug#13588).
+      am_max_uid=2097151 # 2^21 - 1
+      am_max_gid=$am_max_uid
+      # The $UID and $GID variables are not portable, so we need to resort
+      # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
+      # below are definitely unexpected, so allow the users to see them
+      # (that is, avoid stderr redirection).
+      am_uid=`id -u || echo unknown`
+      am_gid=`id -g || echo unknown`
+      AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
+      if test $am_uid -le $am_max_uid; then
+         AC_MSG_RESULT([yes])
+      else
+         AC_MSG_RESULT([no])
+         _am_tools=none
+      fi
+      AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
+      if test $am_gid -le $am_max_gid; then
+         AC_MSG_RESULT([yes])
+      else
+        AC_MSG_RESULT([no])
+        _am_tools=none
+      fi],
+
+  [pax],
+    [],
+
+  [m4_fatal([Unknown tar format])])
+
+  AC_MSG_CHECKING([how to create a $1 tar archive])
+
+  # Go ahead even if we have the value already cached.  We do so because we
+  # need to set the values for the 'am__tar' and 'am__untar' variables.
+  _am_tools=${am_cv_prog_tar_$1-$_am_tools}
+
+  for _am_tool in $_am_tools; do
+    case $_am_tool in
+    gnutar)
+      for _am_tar in tar gnutar gtar; do
+        AM_RUN_LOG([$_am_tar --version]) && break
+      done
+      am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
+      am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
+      am__untar="$_am_tar -xf -"
+      ;;
+    plaintar)
+      # Must skip GNU tar: if it does not support --format= it doesn't create
+      # ustar tarball either.
+      (tar --version) >/dev/null 2>&1 && continue
+      am__tar='tar chf - "$$tardir"'
+      am__tar_='tar chf - "$tardir"'
+      am__untar='tar xf -'
+      ;;
+    pax)
+      am__tar='pax -L -x $1 -w "$$tardir"'
+      am__tar_='pax -L -x $1 -w "$tardir"'
+      am__untar='pax -r'
+      ;;
+    cpio)
+      am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
+      am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
+      am__untar='cpio -i -H $1 -d'
+      ;;
+    none)
+      am__tar=false
+      am__tar_=false
+      am__untar=false
+      ;;
+    esac
+
+    # If the value was cached, stop now.  We just wanted to have am__tar
+    # and am__untar set.
+    test -n "${am_cv_prog_tar_$1}" && break
+
+    # tar/untar a dummy directory, and stop if the command works.
+    rm -rf conftest.dir
+    mkdir conftest.dir
+    echo GrepMe > conftest.dir/file
+    AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
+    rm -rf conftest.dir
+    if test -s conftest.tar; then
+      AM_RUN_LOG([$am__untar <conftest.tar])
+      AM_RUN_LOG([cat conftest.dir/file])
+      grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
+    fi
+  done
+  rm -rf conftest.dir
+
+  AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
+  AC_MSG_RESULT([$am_cv_prog_tar_$1])])
+
+AC_SUBST([am__tar])
+AC_SUBST([am__untar])
+]) # _AM_PROG_TAR
+
+m4_include([m4/00gnulib.m4])
+m4_include([m4/__inline.m4])
+m4_include([m4/absolute-header.m4])
+m4_include([m4/alloca.m4])
+m4_include([m4/arpa_inet_h.m4])
+m4_include([m4/asm-underscore.m4])
+m4_include([m4/assert.m4])
+m4_include([m4/btowc.m4])
+m4_include([m4/builtin-expect.m4])
+m4_include([m4/c-stack.m4])
+m4_include([m4/calloc.m4])
+m4_include([m4/chdir-long.m4])
+m4_include([m4/close.m4])
+m4_include([m4/closedir.m4])
+m4_include([m4/codeset.m4])
+m4_include([m4/configmake.m4])
+m4_include([m4/ctype_h.m4])
+m4_include([m4/cycle-check.m4])
+m4_include([m4/d-ino.m4])
+m4_include([m4/d-type.m4])
+m4_include([m4/dirent_h.m4])
+m4_include([m4/dirfd.m4])
+m4_include([m4/double-slash-root.m4])
+m4_include([m4/dup.m4])
+m4_include([m4/dup2.m4])
+m4_include([m4/eealloc.m4])
+m4_include([m4/environ.m4])
+m4_include([m4/errno_h.m4])
+m4_include([m4/error.m4])
+m4_include([m4/exponentd.m4])
+m4_include([m4/extensions.m4])
+m4_include([m4/extern-inline.m4])
+m4_include([m4/fchdir.m4])
+m4_include([m4/fcntl-o.m4])
+m4_include([m4/fcntl-safer.m4])
+m4_include([m4/fcntl.m4])
+m4_include([m4/fcntl_h.m4])
+m4_include([m4/fdopen.m4])
+m4_include([m4/fdopendir.m4])
+m4_include([m4/filenamecat.m4])
+m4_include([m4/flexmember.m4])
+m4_include([m4/float_h.m4])
+m4_include([m4/fnmatch.m4])
+m4_include([m4/fnmatch_h.m4])
+m4_include([m4/fopen.m4])
+m4_include([m4/fpending.m4])
+m4_include([m4/fpieee.m4])
+m4_include([m4/free.m4])
+m4_include([m4/fstat.m4])
+m4_include([m4/fstatat.m4])
+m4_include([m4/ftruncate.m4])
+m4_include([m4/fts.m4])
+m4_include([m4/getcwd.m4])
+m4_include([m4/getdtablesize.m4])
+m4_include([m4/getopt.m4])
+m4_include([m4/getpagesize.m4])
+m4_include([m4/getprogname.m4])
+m4_include([m4/gettext.m4])
+m4_include([m4/gettimeofday.m4])
+m4_include([m4/gnulib-common.m4])
+m4_include([m4/gnulib-comp.m4])
+m4_include([m4/host-cpu-c-abi.m4])
+m4_include([m4/i-ring.m4])
+m4_include([m4/iconv.m4])
+m4_include([m4/iconv_h.m4])
+m4_include([m4/iconv_open.m4])
+m4_include([m4/include_next.m4])
+m4_include([m4/inet_pton.m4])
+m4_include([m4/inline.m4])
+m4_include([m4/intl-thread-locale.m4])
+m4_include([m4/intlmacosx.m4])
+m4_include([m4/intmax_t.m4])
+m4_include([m4/inttostr.m4])
+m4_include([m4/inttypes.m4])
+m4_include([m4/inttypes_h.m4])
+m4_include([m4/ioctl.m4])
+m4_include([m4/isatty.m4])
+m4_include([m4/isblank.m4])
+m4_include([m4/iswblank.m4])
+m4_include([m4/iswctype.m4])
+m4_include([m4/iswdigit.m4])
+m4_include([m4/iswxdigit.m4])
+m4_include([m4/langinfo_h.m4])
+m4_include([m4/largefile.m4])
+m4_include([m4/lcmessage.m4])
+m4_include([m4/lib-ld.m4])
+m4_include([m4/lib-link.m4])
+m4_include([m4/lib-prefix.m4])
+m4_include([m4/libsigsegv.m4])
+m4_include([m4/libunistring-base.m4])
+m4_include([m4/limits-h.m4])
+m4_include([m4/localcharset.m4])
+m4_include([m4/locale-fr.m4])
+m4_include([m4/locale-ja.m4])
+m4_include([m4/locale-tr.m4])
+m4_include([m4/locale-zh.m4])
+m4_include([m4/locale_h.m4])
+m4_include([m4/localeconv.m4])
+m4_include([m4/localename.m4])
+m4_include([m4/lock.m4])
+m4_include([m4/lseek.m4])
+m4_include([m4/lstat.m4])
+m4_include([m4/malloc.m4])
+m4_include([m4/malloca.m4])
+m4_include([m4/manywarnings.m4])
+m4_include([m4/mbchar.m4])
+m4_include([m4/mbiter.m4])
+m4_include([m4/mbrlen.m4])
+m4_include([m4/mbrtowc.m4])
+m4_include([m4/mbsinit.m4])
+m4_include([m4/mbslen.m4])
+m4_include([m4/mbsrtowcs.m4])
+m4_include([m4/mbstate_t.m4])
+m4_include([m4/mbtowc.m4])
+m4_include([m4/memchr.m4])
+m4_include([m4/mempcpy.m4])
+m4_include([m4/memrchr.m4])
+m4_include([m4/minmax.m4])
+m4_include([m4/mmap-anon.m4])
+m4_include([m4/mode_t.m4])
+m4_include([m4/msvc-inval.m4])
+m4_include([m4/msvc-nothrow.m4])
+m4_include([m4/multiarch.m4])
+m4_include([m4/musl.m4])
+m4_include([m4/nanosleep.m4])
+m4_include([m4/netinet_in_h.m4])
+m4_include([m4/nl_langinfo.m4])
+m4_include([m4/nls.m4])
+m4_include([m4/nocrash.m4])
+m4_include([m4/obstack.m4])
+m4_include([m4/off_t.m4])
+m4_include([m4/open-cloexec.m4])
+m4_include([m4/open-slash.m4])
+m4_include([m4/open.m4])
+m4_include([m4/openat.m4])
+m4_include([m4/opendir.m4])
+m4_include([m4/pathmax.m4])
+m4_include([m4/pcre.m4])
+m4_include([m4/perl.m4])
+m4_include([m4/perror.m4])
+m4_include([m4/pipe.m4])
+m4_include([m4/pkg.m4])
+m4_include([m4/po.m4])
+m4_include([m4/printf.m4])
+m4_include([m4/progtest.m4])
+m4_include([m4/pthread-thread.m4])
+m4_include([m4/pthread_h.m4])
+m4_include([m4/pthread_rwlock_rdlock.m4])
+m4_include([m4/pthread_sigmask.m4])
+m4_include([m4/putenv.m4])
+m4_include([m4/quote.m4])
+m4_include([m4/quotearg.m4])
+m4_include([m4/raise.m4])
+m4_include([m4/rawmemchr.m4])
+m4_include([m4/read.m4])
+m4_include([m4/readdir.m4])
+m4_include([m4/realloc.m4])
+m4_include([m4/reallocarray.m4])
+m4_include([m4/regex.m4])
+m4_include([m4/safe-read.m4])
+m4_include([m4/save-cwd.m4])
+m4_include([m4/sched_h.m4])
+m4_include([m4/select.m4])
+m4_include([m4/setenv.m4])
+m4_include([m4/setlocale.m4])
+m4_include([m4/setlocale_null.m4])
+m4_include([m4/sigaction.m4])
+m4_include([m4/sigaltstack.m4])
+m4_include([m4/signal_h.m4])
+m4_include([m4/signalblocking.m4])
+m4_include([m4/size_max.m4])
+m4_include([m4/sleep.m4])
+m4_include([m4/snprintf.m4])
+m4_include([m4/socketlib.m4])
+m4_include([m4/sockets.m4])
+m4_include([m4/socklen.m4])
+m4_include([m4/sockpfaf.m4])
+m4_include([m4/ssize_t.m4])
+m4_include([m4/stack-direction.m4])
+m4_include([m4/stat-time.m4])
+m4_include([m4/stat.m4])
+m4_include([m4/stdalign.m4])
+m4_include([m4/stdarg.m4])
+m4_include([m4/stdbool.m4])
+m4_include([m4/stddef_h.m4])
+m4_include([m4/stdint.m4])
+m4_include([m4/stdint_h.m4])
+m4_include([m4/stdio_h.m4])
+m4_include([m4/stdlib_h.m4])
+m4_include([m4/stpcpy.m4])
+m4_include([m4/strdup.m4])
+m4_include([m4/strerror.m4])
+m4_include([m4/strerror_r.m4])
+m4_include([m4/string_h.m4])
+m4_include([m4/strnlen.m4])
+m4_include([m4/strstr.m4])
+m4_include([m4/strtoimax.m4])
+m4_include([m4/strtoll.m4])
+m4_include([m4/strtoull.m4])
+m4_include([m4/strtoumax.m4])
+m4_include([m4/symlink.m4])
+m4_include([m4/sys_ioctl_h.m4])
+m4_include([m4/sys_select_h.m4])
+m4_include([m4/sys_socket_h.m4])
+m4_include([m4/sys_stat_h.m4])
+m4_include([m4/sys_time_h.m4])
+m4_include([m4/sys_types_h.m4])
+m4_include([m4/sys_uio_h.m4])
+m4_include([m4/thread.m4])
+m4_include([m4/threadlib.m4])
+m4_include([m4/time_h.m4])
+m4_include([m4/unistd-safer.m4])
+m4_include([m4/unistd_h.m4])
+m4_include([m4/unlocked-io.m4])
+m4_include([m4/vasnprintf.m4])
+m4_include([m4/version-etc.m4])
+m4_include([m4/visibility.m4])
+m4_include([m4/warn-on-use.m4])
+m4_include([m4/warnings.m4])
+m4_include([m4/wchar_h.m4])
+m4_include([m4/wchar_t.m4])
+m4_include([m4/wcrtomb.m4])
+m4_include([m4/wctob.m4])
+m4_include([m4/wctomb.m4])
+m4_include([m4/wctype_h.m4])
+m4_include([m4/wcwidth.m4])
+m4_include([m4/windows-stat-inodes.m4])
+m4_include([m4/wint_t.m4])
+m4_include([m4/wmemchr.m4])
+m4_include([m4/wmempcpy.m4])
+m4_include([m4/xalloc.m4])
+m4_include([m4/xsize.m4])
+m4_include([m4/xstrtol.m4])
+m4_include([m4/year2038.m4])
+m4_include([m4/zzgnulib.m4])
diff --git a/src/grep/build-aux/announce-gen b/src/grep/build-aux/announce-gen
new file mode 100755
index 0000000..f3b5461
--- /dev/null
+++ b/src/grep/build-aux/announce-gen
@@ -0,0 +1,575 @@
+#!/bin/sh
+#! -*-perl-*-
+
+# Generate a release announcement message.
+
+# Copyright (C) 2002-2021 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# Written by Jim Meyering
+
+# This is a prologue that allows to run a perl script as an executable
+# on systems that are compliant to a POSIX version before POSIX:2017.
+# On such systems, the usual invocation of an executable through execlp()
+# or execvp() fails with ENOEXEC if it is a script that does not start
+# with a #! line.  The script interpreter mentioned in the #! line has
+# to be /bin/sh, because on GuixSD systems that is the only program that
+# has a fixed file name.  The second line is essential for perl and is
+# also useful for editing this file in Emacs.  The next two lines below
+# are valid code in both sh and perl.  When executed by sh, they re-execute
+# the script through the perl program found in $PATH.  The '-x' option
+# is essential as well; without it, perl would re-execute the script
+# through /bin/sh.  When executed by perl, the next two lines are a no-op.
+eval 'exec perl -wSx "$0" "$@"'
+     if 0;
+
+my $VERSION = '2021-08-04 09:17'; # UTC
+# The definition above must lie within the first 8 lines in order
+# for the Emacs time-stamp write hook (at end) to update it.
+# If you change this file with Emacs, please let the write hook
+# do its job.  Otherwise, update this string manually.
+
+my $copyright_year = '2021';
+
+use strict;
+use Getopt::Long;
+use POSIX qw(strftime);
+
+(my $ME = $0) =~ s|.*/||;
+
+my %valid_release_types = map {$_ => 1} qw (alpha beta stable);
+my @archive_suffixes = qw (tar.gz tar.bz2 tar.lz tar.lzma tar.xz);
+my $srcdir = '.';
+
+sub usage ($)
+{
+  my ($exit_code) = @_;
+  my $STREAM = ($exit_code == 0 ? *STDOUT : *STDERR);
+  if ($exit_code != 0)
+    {
+      print $STREAM "Try '$ME --help' for more information.\n";
+    }
+  else
+    {
+      my @types = sort keys %valid_release_types;
+      print $STREAM <<EOF;
+Usage: $ME [OPTIONS]
+Generate an announcement message.  Run this from builddir.
+
+OPTIONS:
+
+These options must be specified:
+
+   --release-type=TYPE          TYPE must be one of @types
+   --package-name=PACKAGE_NAME
+   --previous-version=VER
+   --current-version=VER
+   --gpg-key-id=ID         The GnuPG ID of the key used to sign the tarballs
+   --url-directory=URL_DIR
+
+The following are optional:
+
+   --news=NEWS_FILE             include the NEWS section about this release
+                                from this NEWS_FILE; accumulates.
+   --srcdir=DIR                 where to find the NEWS_FILEs (default: $srcdir)
+   --bootstrap-tools=TOOL_LIST  a comma-separated list of tools, e.g.,
+                                autoconf,automake,bison,gnulib
+   --gnulib-version=VERSION     report VERSION as the gnulib version, where
+                                VERSION is the result of running git describe
+                                in the gnulib source directory.
+                                required if gnulib is in TOOL_LIST.
+   --no-print-checksums         do not emit SHA1 or SHA256 checksums
+   --archive-suffix=SUF         add SUF to the list of archive suffixes
+   --mail-headers=HEADERS       a space-separated list of mail headers, e.g.,
+                                To: x\@example.com Cc: y-announce\@example.com,...
+
+   --help             display this help and exit
+   --version          output version information and exit
+
+EOF
+    }
+  exit $exit_code;
+}
+
+
+=item C<%size> = C<sizes (@file)>
+
+Compute the sizes of the C<@file> and return them as a hash.  Return
+C<undef> if one of the computation failed.
+
+=cut
+
+sub sizes (@)
+{
+  my (@file) = @_;
+
+  my $fail = 0;
+  my %res;
+  foreach my $f (@file)
+    {
+      my $cmd = "du -h $f";
+      my $t = `$cmd`;
+      # FIXME-someday: give a better diagnostic, a la $PROCESS_STATUS
+      $@
+        and (warn "command failed: '$cmd'\n"), $fail = 1;
+      chomp $t;
+      $t =~ s/^\s*([\d.]+[MkK]).*/${1}B/;
+      $res{$f} = $t;
+    }
+  return $fail ? undef : %res;
+}
+
+=item C<print_locations ($title, \@url, \%size, @file)
+
+Print a section C<$title> dedicated to the list of <@file>, which
+sizes are stored in C<%size>, and which are available from the C<@url>.
+
+=cut
+
+sub print_locations ($\@\%@)
+{
+  my ($title, $url, $size, @file) = @_;
+  print "Here are the $title:\n";
+  foreach my $url (@{$url})
+    {
+      for my $file (@file)
+        {
+          print "  $url/$file";
+          print "   (", $$size{$file}, ")"
+            if exists $$size{$file};
+          print "\n";
+        }
+    }
+  print "\n";
+}
+
+=item C<print_checksums (@file)
+
+Print the SHA1 and SHA256 signature section for each C<@file>.
+
+=cut
+
+sub print_checksums (@)
+{
+  my (@file) = @_;
+
+  print "Here are the SHA1 and SHA256 checksums:\n";
+  print "\n";
+
+  use Digest::file qw(digest_file_hex digest_file_base64);
+
+  foreach my $f (@file)
+    {
+      print digest_file_hex($f, "SHA-1"), "  $f\n";
+      print digest_file_base64($f, "SHA-256"), "  $f\n";
+    }
+  print "\nThe SHA256 checksum is base64 encoded, instead of the\n";
+  print "hexadecimal encoding that most checksum tools default to.\n\n";
+}
+
+=item C<print_news_deltas ($news_file, $prev_version, $curr_version)
+
+Print the section of the NEWS file C<$news_file> addressing changes
+between versions C<$prev_version> and C<$curr_version>.
+
+=cut
+
+sub print_news_deltas ($$$)
+{
+  my ($news_file, $prev_version, $curr_version) = @_;
+
+  my $news_name = $news_file;
+  $news_name =~ s|^\Q$srcdir\E/||;
+
+  print "\n$news_name\n\n";
+
+  # Print all lines from $news_file, starting with the first one
+  # that mentions $curr_version up to but not including
+  # the first occurrence of $prev_version.
+  my $in_items;
+
+  my $re_prefix = qr/(?:\* )?(?:Noteworthy c|Major c|C)(?i:hanges)/;
+
+  my $found_news;
+  open NEWS, '<', $news_file
+    or die "$ME: $news_file: cannot open for reading: $!\n";
+  while (defined (my $line = <NEWS>))
+    {
+      if ( ! $in_items)
+        {
+          # Match lines like these:
+          # * Major changes in release 5.0.1:
+          # * Noteworthy changes in release 6.6 (2006-11-22) [stable]
+          $line =~ /^$re_prefix.*(?:[^\d.]|$)\Q$curr_version\E(?:[^\d.]|$)/o
+            or next;
+          $in_items = 1;
+          print $line;
+        }
+      else
+        {
+          # This regexp must not match version numbers in NEWS items.
+          # For example, they might well say "introduced in 4.5.5",
+          # and we don't want that to match.
+          $line =~ /^$re_prefix.*(?:[^\d.]|$)\Q$prev_version\E(?:[^\d.]|$)/o
+            and last;
+          print $line;
+          $line =~ /\S/
+            and $found_news = 1;
+        }
+    }
+  close NEWS;
+
+  $in_items
+    or die "$ME: $news_file: no matching lines for '$curr_version'\n";
+  $found_news
+    or die "$ME: $news_file: no news item found for '$curr_version'\n";
+}
+
+sub print_changelog_deltas ($$)
+{
+  my ($package_name, $prev_version) = @_;
+
+  # Print new ChangeLog entries.
+
+  # First find all CVS-controlled ChangeLog files.
+  use File::Find;
+  my @changelog;
+  find ({wanted => sub {$_ eq 'ChangeLog' && -d 'CVS'
+                          and push @changelog, $File::Find::name}},
+        '.');
+
+  # If there are no ChangeLog files, we're done.
+  @changelog
+    or return;
+  my %changelog = map {$_ => 1} @changelog;
+
+  # Reorder the list of files so that if there are ChangeLog
+  # files in the specified directories, they're listed first,
+  # in this order:
+  my @dir = qw ( . src lib m4 config doc );
+
+  # A typical @changelog array might look like this:
+  # ./ChangeLog
+  # ./po/ChangeLog
+  # ./m4/ChangeLog
+  # ./lib/ChangeLog
+  # ./doc/ChangeLog
+  # ./config/ChangeLog
+  my @reordered;
+  foreach my $d (@dir)
+    {
+      my $dot_slash = $d eq '.' ? $d : "./$d";
+      my $target = "$dot_slash/ChangeLog";
+      delete $changelog{$target}
+        and push @reordered, $target;
+    }
+
+  # Append any remaining ChangeLog files.
+  push @reordered, sort keys %changelog;
+
+  # Remove leading './'.
+  @reordered = map { s!^\./!!; $_ } @reordered;
+
+  print "\nChangeLog entries:\n\n";
+  # print join ("\n", @reordered), "\n";
+
+  $prev_version =~ s/\./_/g;
+  my $prev_cvs_tag = "\U$package_name\E-$prev_version";
+
+  my $cmd = "cvs -n diff -u -r$prev_cvs_tag -rHEAD @reordered";
+  open DIFF, '-|', $cmd
+    or die "$ME: cannot run '$cmd': $!\n";
+  # Print two types of lines, making minor changes:
+  # Lines starting with '+++ ', e.g.,
+  # +++ ChangeLog   22 Feb 2003 16:52:51 -0000      1.247
+  # and those starting with '+'.
+  # Don't print the others.
+  my $prev_printed_line_empty = 1;
+  while (defined (my $line = <DIFF>))
+    {
+      if ($line =~ /^\+\+\+ /)
+        {
+          my $separator = "*"x70 ."\n";
+          $line =~ s///;
+          $line =~ s/\s.*//;
+          $prev_printed_line_empty
+            or print "\n";
+          print $separator, $line, $separator;
+        }
+      elsif ($line =~ /^\+/)
+        {
+          $line =~ s///;
+          print $line;
+          $prev_printed_line_empty = ($line =~ /^$/);
+        }
+    }
+  close DIFF;
+
+  # The exit code should be 1.
+  # Allow in case there are no modified ChangeLog entries.
+  $? == 256 || $? == 128
+    or warn "warning: '$cmd' had unexpected exit code or signal ($?)\n";
+}
+
+sub get_tool_versions ($$)
+{
+  my ($tool_list, $gnulib_version) = @_;
+  @$tool_list
+    or return ();
+
+  my $fail;
+  my @tool_version_pair;
+  foreach my $t (@$tool_list)
+    {
+      if ($t eq 'gnulib')
+        {
+          push @tool_version_pair, ucfirst $t . ' ' . $gnulib_version;
+          next;
+        }
+      # Assume that the last "word" on the first line of
+      # 'tool --version' output is the version string.
+      my ($first_line, undef) = split ("\n", `$t --version`);
+      if ($first_line =~ /.* (\d[\w.-]+)$/)
+        {
+          $t = ucfirst $t;
+          push @tool_version_pair, "$t $1";
+        }
+      else
+        {
+          defined $first_line
+            and $first_line = '';
+          warn "$t: unexpected --version output\n:$first_line";
+          $fail = 1;
+        }
+    }
+
+  $fail
+    and exit 1;
+
+  return @tool_version_pair;
+}
+
+{
+  # Use the C locale so that, for instance, "du" does not
+  # print "1,2" instead of "1.2", which would confuse our regexps.
+  $ENV{LC_ALL} = "C";
+
+  my $mail_headers;
+  my $release_type;
+  my $package_name;
+  my $prev_version;
+  my $curr_version;
+  my $gpg_key_id;
+  my @url_dir_list;
+  my @news_file;
+  my $bootstrap_tools;
+  my $gnulib_version;
+  my $print_checksums_p = 1;
+
+  # Reformat the warnings before displaying them.
+  local $SIG{__WARN__} = sub
+    {
+      my ($msg) = @_;
+      # Warnings from GetOptions.
+      $msg =~ s/Option (\w)/option --$1/;
+      warn "$ME: $msg";
+    };
+
+  GetOptions
+    (
+     'mail-headers=s'     => \$mail_headers,
+     'release-type=s'     => \$release_type,
+     'package-name=s'     => \$package_name,
+     'previous-version=s' => \$prev_version,
+     'current-version=s'  => \$curr_version,
+     'gpg-key-id=s'       => \$gpg_key_id,
+     'url-directory=s'    => \@url_dir_list,
+     'news=s'             => \@news_file,
+     'srcdir=s'           => \$srcdir,
+     'bootstrap-tools=s'  => \$bootstrap_tools,
+     'gnulib-version=s'   => \$gnulib_version,
+     'print-checksums!'   => \$print_checksums_p,
+     'archive-suffix=s'   => \@archive_suffixes,
+
+     help => sub { usage 0 },
+     version =>
+       sub
+       {
+         print "$ME version $VERSION\n";
+         print "Copyright (C) $copyright_year Free Software Foundation, Inc.\n";
+         print "License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.\n"
+             . "This is free software: you are free to change and redistribute it.\n"
+             . "There is NO WARRANTY, to the extent permitted by law.\n";
+         print "\n";
+         my $author = "Jim Meyering";
+         print "Written by $author.\n";
+         exit
+       },
+    ) or usage 1;
+
+  my $fail = 0;
+  # Ensure that each required option is specified.
+  $release_type
+    or (warn "release type not specified\n"), $fail = 1;
+  $package_name
+    or (warn "package name not specified\n"), $fail = 1;
+  $prev_version
+    or (warn "previous version string not specified\n"), $fail = 1;
+  $curr_version
+    or (warn "current version string not specified\n"), $fail = 1;
+  $gpg_key_id
+    or (warn "GnuPG key ID not specified\n"), $fail = 1;
+  @url_dir_list
+    or (warn "URL directory name(s) not specified\n"), $fail = 1;
+
+  my @tool_list = split ',', $bootstrap_tools
+    if $bootstrap_tools;
+
+  grep (/^gnulib$/, @tool_list) ^ defined $gnulib_version
+    and (warn "when specifying gnulib as a tool, you must also specify\n"
+        . "--gnulib-version=V, where V is the result of running git describe\n"
+        . "in the gnulib source directory.\n"), $fail = 1;
+
+  !$release_type || exists $valid_release_types{$release_type}
+    or (warn "'$release_type': invalid release type\n"), $fail = 1;
+
+  @ARGV
+    and (warn "too many arguments:\n", join ("\n", @ARGV), "\n"),
+      $fail = 1;
+  $fail
+    and usage 1;
+
+  my $my_distdir = "$package_name-$curr_version";
+
+  my $xd = "$package_name-$prev_version-$curr_version.xdelta";
+
+  my @candidates = map { "$my_distdir.$_" } @archive_suffixes;
+  my @tarballs = grep {-f $_} @candidates;
+
+  @tarballs
+    or die "$ME: none of " . join(', ', @candidates) . " were found\n";
+  my @sizable = @tarballs;
+  -f $xd
+    and push @sizable, $xd;
+  my %size = sizes (@sizable);
+  %size
+    or exit 1;
+
+  my $headers = '';
+  if (defined $mail_headers)
+    {
+      ($headers = $mail_headers) =~ s/\s+(\S+:)/\n$1/g;
+      $headers .= "\n";
+    }
+
+  # The markup is escaped as <\# so that when this script is sent by
+  # mail (or part of a diff), Gnus is not triggered.
+  print <<EOF;
+
+${headers}Subject: $my_distdir released [$release_type]
+
+<\#secure method=pgpmime mode=sign>
+
+FIXME: put comments here
+
+EOF
+
+  if (@url_dir_list == 1 && @tarballs == 1)
+    {
+      # When there's only one tarball and one URL, use a more concise form.
+      my $m = "$url_dir_list[0]/$tarballs[0]";
+      print "Here are the compressed sources and a GPG detached signature[*]:\n"
+        . "  $m\n"
+        . "  $m.sig\n\n";
+    }
+  else
+    {
+      print_locations ("compressed sources", @url_dir_list, %size, @tarballs);
+      -f $xd
+        and print_locations ("xdelta diffs (useful? if so, "
+                             . "please tell bug-gnulib\@gnu.org)",
+                             @url_dir_list, %size, $xd);
+      my @sig_files = map { "$_.sig" } @tarballs;
+      print_locations ("GPG detached signatures[*]", @url_dir_list, %size,
+                       @sig_files);
+    }
+
+  if ($url_dir_list[0] =~ "gnu\.org")
+    {
+      print "Use a mirror for higher download bandwidth:\n";
+      if (@tarballs == 1 && $url_dir_list[0] =~ m!https://ftp\.gnu\.org/gnu/!)
+        {
+          (my $m = "$url_dir_list[0]/$tarballs[0]")
+            =~ s!https://ftp\.gnu\.org/gnu/!https://ftpmirror\.gnu\.org/!;
+          print "  $m\n"
+              . "  $m.sig\n\n";
+
+        }
+      else
+        {
+          print "  https://www.gnu.org/order/ftp.html\n\n";
+        }
+    }
+
+  $print_checksums_p
+    and print_checksums (@sizable);
+
+  print <<EOF;
+[*] Use a .sig file to verify that the corresponding file (without the
+.sig suffix) is intact.  First, be sure to download both the .sig file
+and the corresponding tarball.  Then, run a command like this:
+
+  gpg --verify $tarballs[0].sig
+
+If that command fails because you don't have the required public key,
+then run this command to import it:
+
+  gpg --keyserver keys.gnupg.net --recv-keys $gpg_key_id
+
+and rerun the 'gpg --verify' command.
+EOF
+
+  my @tool_versions = get_tool_versions (\@tool_list, $gnulib_version);
+  @tool_versions
+    and print "\nThis release was bootstrapped with the following tools:",
+      join ('', map {"\n  $_"} @tool_versions), "\n";
+
+  print_news_deltas ($_, $prev_version, $curr_version)
+    foreach @news_file;
+
+  $release_type eq 'stable'
+    or print_changelog_deltas ($package_name, $prev_version);
+
+  exit 0;
+}
+
+### Setup "GNU" style for perl-mode and cperl-mode.
+## Local Variables:
+## mode: perl
+## perl-indent-level: 2
+## perl-continued-statement-offset: 2
+## perl-continued-brace-offset: 0
+## perl-brace-offset: 0
+## perl-brace-imaginary-offset: 0
+## perl-label-offset: -2
+## perl-extra-newline-before-brace: t
+## perl-merge-trailing-else: nil
+## eval: (add-hook 'before-save-hook 'time-stamp)
+## time-stamp-line-limit: 50
+## time-stamp-start: "my $VERSION = '"
+## time-stamp-format: "%:y-%02m-%02d %02H:%02M"
+## time-stamp-time-zone: "UTC0"
+## time-stamp-end: "'; # UTC"
+## End:
diff --git a/src/grep/build-aux/ar-lib b/src/grep/build-aux/ar-lib
new file mode 100755
index 0000000..1700c5e
--- /dev/null
+++ b/src/grep/build-aux/ar-lib
@@ -0,0 +1,270 @@
+#! /bin/sh
+# Wrapper for Microsoft lib.exe
+
+me=ar-lib
+scriptversion=2012-03-01.08; # UTC
+
+# Copyright (C) 2010-2015 Free Software Foundation, Inc.
+# Written by Peter Rosin <peda@lysator.liu.se>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+
+# func_error message
+func_error ()
+{
+  echo "$me: $1" 1>&2
+  exit 1
+}
+
+file_conv=
+
+# func_file_conv build_file
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts.
+func_file_conv ()
+{
+  file=$1
+  case $file in
+    / | /[!/]*) # absolute file, and not a UNC file
+      if test -z "$file_conv"; then
+	# lazily determine how to convert abs files
+	case `uname -s` in
+	  MINGW*)
+	    file_conv=mingw
+	    ;;
+	  CYGWIN*)
+	    file_conv=cygwin
+	    ;;
+	  *)
+	    file_conv=wine
+	    ;;
+	esac
+      fi
+      case $file_conv in
+	mingw)
+	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+	  ;;
+	cygwin)
+	  file=`cygpath -m "$file" || echo "$file"`
+	  ;;
+	wine)
+	  file=`winepath -w "$file" || echo "$file"`
+	  ;;
+      esac
+      ;;
+  esac
+}
+
+# func_at_file at_file operation archive
+# Iterate over all members in AT_FILE performing OPERATION on ARCHIVE
+# for each of them.
+# When interpreting the content of the @FILE, do NOT use func_file_conv,
+# since the user would need to supply preconverted file names to
+# binutils ar, at least for MinGW.
+func_at_file ()
+{
+  operation=$2
+  archive=$3
+  at_file_contents=`cat "$1"`
+  eval set x "$at_file_contents"
+  shift
+
+  for member
+  do
+    $AR -NOLOGO $operation:"$member" "$archive" || exit $?
+  done
+}
+
+case $1 in
+  '')
+     func_error "no command.  Try '$0 --help' for more information."
+     ;;
+  -h | --h*)
+    cat <<EOF
+Usage: $me [--help] [--version] PROGRAM ACTION ARCHIVE [MEMBER...]
+
+Members may be specified in a file named with @FILE.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "$me, version $scriptversion"
+    exit $?
+    ;;
+esac
+
+if test $# -lt 3; then
+  func_error "you must specify a program, an action and an archive"
+fi
+
+AR=$1
+shift
+while :
+do
+  if test $# -lt 2; then
+    func_error "you must specify a program, an action and an archive"
+  fi
+  case $1 in
+    -lib | -LIB \
+    | -ltcg | -LTCG \
+    | -machine* | -MACHINE* \
+    | -subsystem* | -SUBSYSTEM* \
+    | -verbose | -VERBOSE \
+    | -wx* | -WX* )
+      AR="$AR $1"
+      shift
+      ;;
+    *)
+      action=$1
+      shift
+      break
+      ;;
+  esac
+done
+orig_archive=$1
+shift
+func_file_conv "$orig_archive"
+archive=$file
+
+# strip leading dash in $action
+action=${action#-}
+
+delete=
+extract=
+list=
+quick=
+replace=
+index=
+create=
+
+while test -n "$action"
+do
+  case $action in
+    d*) delete=yes  ;;
+    x*) extract=yes ;;
+    t*) list=yes    ;;
+    q*) quick=yes   ;;
+    r*) replace=yes ;;
+    s*) index=yes   ;;
+    S*)             ;; # the index is always updated implicitly
+    c*) create=yes  ;;
+    u*)             ;; # TODO: don't ignore the update modifier
+    v*)             ;; # TODO: don't ignore the verbose modifier
+    *)
+      func_error "unknown action specified"
+      ;;
+  esac
+  action=${action#?}
+done
+
+case $delete$extract$list$quick$replace,$index in
+  yes,* | ,yes)
+    ;;
+  yesyes*)
+    func_error "more than one action specified"
+    ;;
+  *)
+    func_error "no action specified"
+    ;;
+esac
+
+if test -n "$delete"; then
+  if test ! -f "$orig_archive"; then
+    func_error "archive not found"
+  fi
+  for member
+  do
+    case $1 in
+      @*)
+        func_at_file "${1#@}" -REMOVE "$archive"
+        ;;
+      *)
+        func_file_conv "$1"
+        $AR -NOLOGO -REMOVE:"$file" "$archive" || exit $?
+        ;;
+    esac
+  done
+
+elif test -n "$extract"; then
+  if test ! -f "$orig_archive"; then
+    func_error "archive not found"
+  fi
+  if test $# -gt 0; then
+    for member
+    do
+      case $1 in
+        @*)
+          func_at_file "${1#@}" -EXTRACT "$archive"
+          ;;
+        *)
+          func_file_conv "$1"
+          $AR -NOLOGO -EXTRACT:"$file" "$archive" || exit $?
+          ;;
+      esac
+    done
+  else
+    $AR -NOLOGO -LIST "$archive" | sed -e 's/\\/\\\\/g' | while read member
+    do
+      $AR -NOLOGO -EXTRACT:"$member" "$archive" || exit $?
+    done
+  fi
+
+elif test -n "$quick$replace"; then
+  if test ! -f "$orig_archive"; then
+    if test -z "$create"; then
+      echo "$me: creating $orig_archive"
+    fi
+    orig_archive=
+  else
+    orig_archive=$archive
+  fi
+
+  for member
+  do
+    case $1 in
+    @*)
+      func_file_conv "${1#@}"
+      set x "$@" "@$file"
+      ;;
+    *)
+      func_file_conv "$1"
+      set x "$@" "$file"
+      ;;
+    esac
+    shift
+    shift
+  done
+
+  if test -n "$orig_archive"; then
+    $AR -NOLOGO -OUT:"$archive" "$orig_archive" "$@" || exit $?
+  else
+    $AR -NOLOGO -OUT:"$archive" "$@" || exit $?
+  fi
+
+elif test -n "$list"; then
+  if test ! -f "$orig_archive"; then
+    func_error "archive not found"
+  fi
+  $AR -NOLOGO -LIST "$archive" || exit $?
+fi
diff --git a/src/grep/build-aux/compile b/src/grep/build-aux/compile
new file mode 100755
index 0000000..df363c8
--- /dev/null
+++ b/src/grep/build-aux/compile
@@ -0,0 +1,348 @@
+#! /bin/sh
+# Wrapper for compilers which do not understand '-c -o'.
+
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1999-2021 Free Software Foundation, Inc.
+# Written by Tom Tromey <tromey@cygnus.com>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+nl='
+'
+
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent tools from complaining about whitespace usage.
+IFS=" ""	$nl"
+
+file_conv=
+
+# func_file_conv build_file lazy
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts. If the determined conversion
+# type is listed in (the comma separated) LAZY, no conversion will
+# take place.
+func_file_conv ()
+{
+  file=$1
+  case $file in
+    / | /[!/]*) # absolute file, and not a UNC file
+      if test -z "$file_conv"; then
+	# lazily determine how to convert abs files
+	case `uname -s` in
+	  MINGW*)
+	    file_conv=mingw
+	    ;;
+	  CYGWIN* | MSYS*)
+	    file_conv=cygwin
+	    ;;
+	  *)
+	    file_conv=wine
+	    ;;
+	esac
+      fi
+      case $file_conv/,$2, in
+	*,$file_conv,*)
+	  ;;
+	mingw/*)
+	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+	  ;;
+	cygwin/* | msys/*)
+	  file=`cygpath -m "$file" || echo "$file"`
+	  ;;
+	wine/*)
+	  file=`winepath -w "$file" || echo "$file"`
+	  ;;
+      esac
+      ;;
+  esac
+}
+
+# func_cl_dashL linkdir
+# Make cl look for libraries in LINKDIR
+func_cl_dashL ()
+{
+  func_file_conv "$1"
+  if test -z "$lib_path"; then
+    lib_path=$file
+  else
+    lib_path="$lib_path;$file"
+  fi
+  linker_opts="$linker_opts -LIBPATH:$file"
+}
+
+# func_cl_dashl library
+# Do a library search-path lookup for cl
+func_cl_dashl ()
+{
+  lib=$1
+  found=no
+  save_IFS=$IFS
+  IFS=';'
+  for dir in $lib_path $LIB
+  do
+    IFS=$save_IFS
+    if $shared && test -f "$dir/$lib.dll.lib"; then
+      found=yes
+      lib=$dir/$lib.dll.lib
+      break
+    fi
+    if test -f "$dir/$lib.lib"; then
+      found=yes
+      lib=$dir/$lib.lib
+      break
+    fi
+    if test -f "$dir/lib$lib.a"; then
+      found=yes
+      lib=$dir/lib$lib.a
+      break
+    fi
+  done
+  IFS=$save_IFS
+
+  if test "$found" != yes; then
+    lib=$lib.lib
+  fi
+}
+
+# func_cl_wrapper cl arg...
+# Adjust compile command to suit cl
+func_cl_wrapper ()
+{
+  # Assume a capable shell
+  lib_path=
+  shared=:
+  linker_opts=
+  for arg
+  do
+    if test -n "$eat"; then
+      eat=
+    else
+      case $1 in
+	-o)
+	  # configure might choose to run compile as 'compile cc -o foo foo.c'.
+	  eat=1
+	  case $2 in
+	    *.o | *.[oO][bB][jJ])
+	      func_file_conv "$2"
+	      set x "$@" -Fo"$file"
+	      shift
+	      ;;
+	    *)
+	      func_file_conv "$2"
+	      set x "$@" -Fe"$file"
+	      shift
+	      ;;
+	  esac
+	  ;;
+	-I)
+	  eat=1
+	  func_file_conv "$2" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-I*)
+	  func_file_conv "${1#-I}" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-l)
+	  eat=1
+	  func_cl_dashl "$2"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-l*)
+	  func_cl_dashl "${1#-l}"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-L)
+	  eat=1
+	  func_cl_dashL "$2"
+	  ;;
+	-L*)
+	  func_cl_dashL "${1#-L}"
+	  ;;
+	-static)
+	  shared=false
+	  ;;
+	-Wl,*)
+	  arg=${1#-Wl,}
+	  save_ifs="$IFS"; IFS=','
+	  for flag in $arg; do
+	    IFS="$save_ifs"
+	    linker_opts="$linker_opts $flag"
+	  done
+	  IFS="$save_ifs"
+	  ;;
+	-Xlinker)
+	  eat=1
+	  linker_opts="$linker_opts $2"
+	  ;;
+	-*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+	*.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
+	  func_file_conv "$1"
+	  set x "$@" -Tp"$file"
+	  shift
+	  ;;
+	*.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
+	  func_file_conv "$1" mingw
+	  set x "$@" "$file"
+	  shift
+	  ;;
+	*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+      esac
+    fi
+    shift
+  done
+  if test -n "$linker_opts"; then
+    linker_opts="-link$linker_opts"
+  fi
+  exec "$@" $linker_opts
+  exit 1
+}
+
+eat=
+
+case $1 in
+  '')
+     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: compile [--help] [--version] PROGRAM [ARGS]
+
+Wrapper for compilers which do not understand '-c -o'.
+Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
+arguments, and rename the output as expected.
+
+If you are trying to build a whole package this is not the
+right script to run: please start by reading the file 'INSTALL'.
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "compile $scriptversion"
+    exit $?
+    ;;
+  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \
+  icl | *[/\\]icl | icl.exe | *[/\\]icl.exe )
+    func_cl_wrapper "$@"      # Doesn't return...
+    ;;
+esac
+
+ofile=
+cfile=
+
+for arg
+do
+  if test -n "$eat"; then
+    eat=
+  else
+    case $1 in
+      -o)
+	# configure might choose to run compile as 'compile cc -o foo foo.c'.
+	# So we strip '-o arg' only if arg is an object.
+	eat=1
+	case $2 in
+	  *.o | *.obj)
+	    ofile=$2
+	    ;;
+	  *)
+	    set x "$@" -o "$2"
+	    shift
+	    ;;
+	esac
+	;;
+      *.c)
+	cfile=$1
+	set x "$@" "$1"
+	shift
+	;;
+      *)
+	set x "$@" "$1"
+	shift
+	;;
+    esac
+  fi
+  shift
+done
+
+if test -z "$ofile" || test -z "$cfile"; then
+  # If no '-o' option was seen then we might have been invoked from a
+  # pattern rule where we don't need one.  That is ok -- this is a
+  # normal compilation that the losing compiler can handle.  If no
+  # '.c' file was seen then we are probably linking.  That is also
+  # ok.
+  exec "$@"
+fi
+
+# Name of file we expect compiler to create.
+cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
+
+# Create the lock directory.
+# Note: use '[/\\:.-]' here to ensure that we don't use the same name
+# that we are using for the .o file.  Also, base the name on the expected
+# object file name, since that is what matters with a parallel build.
+lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
+while true; do
+  if mkdir "$lockdir" >/dev/null 2>&1; then
+    break
+  fi
+  sleep 1
+done
+# FIXME: race condition here if user kills between mkdir and trap.
+trap "rmdir '$lockdir'; exit 1" 1 2 15
+
+# Run the compile.
+"$@"
+ret=$?
+
+if test -f "$cofile"; then
+  test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
+elif test -f "${cofile}bj"; then
+  test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
+fi
+
+rmdir "$lockdir"
+exit $ret
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/grep/build-aux/config.guess b/src/grep/build-aux/config.guess
new file mode 100755
index 0000000..e81d3ae
--- /dev/null
+++ b/src/grep/build-aux/config.guess
@@ -0,0 +1,1748 @@
+#! /bin/sh
+# Attempt to guess a canonical system name.
+#   Copyright 1992-2021 Free Software Foundation, Inc.
+
+# shellcheck disable=SC2006,SC2268 # see below for rationale
+
+timestamp='2021-06-03'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
+#
+# Originally written by Per Bothner; maintained since 2000 by Ben Elliston.
+#
+# You can get the latest version of this script from:
+# https://git.savannah.gnu.org/cgit/config.git/plain/config.guess
+#
+# Please send patches to <config-patches@gnu.org>.
+
+
+# The "shellcheck disable" line above the timestamp inhibits complaints
+# about features and limitations of the classic Bourne shell that were
+# superseded or lifted in POSIX.  However, this script identifies a wide
+# variety of pre-POSIX systems that do not have POSIX shells at all, and
+# even some reasonably current systems (Solaris 10 as case-in-point) still
+# have a pre-POSIX /bin/sh.
+
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION]
+
+Output the configuration name of the system \`$me' is run on.
+
+Options:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.guess ($timestamp)
+
+Originally written by Per Bothner.
+Copyright 1992-2021 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+    * )
+       break ;;
+  esac
+done
+
+if test $# != 0; then
+  echo "$me: too many arguments$help" >&2
+  exit 1
+fi
+
+# Just in case it came from the environment.
+GUESS=
+
+# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
+# compiler to aid in system detection is discouraged as it requires
+# temporary files to be created and, as you can see below, it is a
+# headache to deal with in a portable fashion.
+
+# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
+# use `HOST_CC' if defined, but it is deprecated.
+
+# Portable tmp directory creation inspired by the Autoconf team.
+
+tmp=
+# shellcheck disable=SC2172
+trap 'test -z "$tmp" || rm -fr "$tmp"' 0 1 2 13 15
+
+set_cc_for_build() {
+    # prevent multiple calls if $tmp is already set
+    test "$tmp" && return 0
+    : "${TMPDIR=/tmp}"
+    # shellcheck disable=SC2039,SC3028
+    { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
+	{ test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir "$tmp" 2>/dev/null) ; } ||
+	{ tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir "$tmp" 2>/dev/null) && echo "Warning: creating insecure temp directory" >&2 ; } ||
+	{ echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; }
+    dummy=$tmp/dummy
+    case ${CC_FOR_BUILD-},${HOST_CC-},${CC-} in
+	,,)    echo "int x;" > "$dummy.c"
+	       for driver in cc gcc c89 c99 ; do
+		   if ($driver -c -o "$dummy.o" "$dummy.c") >/dev/null 2>&1 ; then
+		       CC_FOR_BUILD=$driver
+		       break
+		   fi
+	       done
+	       if test x"$CC_FOR_BUILD" = x ; then
+		   CC_FOR_BUILD=no_compiler_found
+	       fi
+	       ;;
+	,,*)   CC_FOR_BUILD=$CC ;;
+	,*,*)  CC_FOR_BUILD=$HOST_CC ;;
+    esac
+}
+
+# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
+# (ghazi@noc.rutgers.edu 1994-08-24)
+if test -f /.attbin/uname ; then
+	PATH=$PATH:/.attbin ; export PATH
+fi
+
+UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
+UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
+UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown
+UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
+
+case $UNAME_SYSTEM in
+Linux|GNU|GNU/*)
+	LIBC=unknown
+
+	set_cc_for_build
+	cat <<-EOF > "$dummy.c"
+	#include <features.h>
+	#if defined(__UCLIBC__)
+	LIBC=uclibc
+	#elif defined(__dietlibc__)
+	LIBC=dietlibc
+	#elif defined(__GLIBC__)
+	LIBC=gnu
+	#else
+	#include <stdarg.h>
+	/* First heuristic to detect musl libc.  */
+	#ifdef __DEFINED_va_list
+	LIBC=musl
+	#endif
+	#endif
+	EOF
+	cc_set_libc=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^LIBC' | sed 's, ,,g'`
+	eval "$cc_set_libc"
+
+	# Second heuristic to detect musl libc.
+	if [ "$LIBC" = unknown ] &&
+	   command -v ldd >/dev/null &&
+	   ldd --version 2>&1 | grep -q ^musl; then
+		LIBC=musl
+	fi
+
+	# If the system lacks a compiler, then just pick glibc.
+	# We could probably try harder.
+	if [ "$LIBC" = unknown ]; then
+		LIBC=gnu
+	fi
+	;;
+esac
+
+# Note: order is significant - the case branches are not exclusive.
+
+case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
+    *:NetBSD:*:*)
+	# NetBSD (nbsd) targets should (where applicable) match one or
+	# more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,
+	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
+	# switched to ELF, *-*-netbsd* would select the old
+	# object file format.  This provides both forward
+	# compatibility and a consistent mechanism for selecting the
+	# object file format.
+	#
+	# Note: NetBSD doesn't particularly care about the vendor
+	# portion of the name.  We always set it to "unknown".
+	UNAME_MACHINE_ARCH=`(uname -p 2>/dev/null || \
+	    /sbin/sysctl -n hw.machine_arch 2>/dev/null || \
+	    /usr/sbin/sysctl -n hw.machine_arch 2>/dev/null || \
+	    echo unknown)`
+	case $UNAME_MACHINE_ARCH in
+	    aarch64eb) machine=aarch64_be-unknown ;;
+	    armeb) machine=armeb-unknown ;;
+	    arm*) machine=arm-unknown ;;
+	    sh3el) machine=shl-unknown ;;
+	    sh3eb) machine=sh-unknown ;;
+	    sh5el) machine=sh5le-unknown ;;
+	    earmv*)
+		arch=`echo "$UNAME_MACHINE_ARCH" | sed -e 's,^e\(armv[0-9]\).*$,\1,'`
+		endian=`echo "$UNAME_MACHINE_ARCH" | sed -ne 's,^.*\(eb\)$,\1,p'`
+		machine=${arch}${endian}-unknown
+		;;
+	    *) machine=$UNAME_MACHINE_ARCH-unknown ;;
+	esac
+	# The Operating System including object format, if it has switched
+	# to ELF recently (or will in the future) and ABI.
+	case $UNAME_MACHINE_ARCH in
+	    earm*)
+		os=netbsdelf
+		;;
+	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
+		set_cc_for_build
+		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
+			| grep -q __ELF__
+		then
+		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
+		    # Return netbsd for either.  FIX?
+		    os=netbsd
+		else
+		    os=netbsdelf
+		fi
+		;;
+	    *)
+		os=netbsd
+		;;
+	esac
+	# Determine ABI tags.
+	case $UNAME_MACHINE_ARCH in
+	    earm*)
+		expr='s/^earmv[0-9]/-eabi/;s/eb$//'
+		abi=`echo "$UNAME_MACHINE_ARCH" | sed -e "$expr"`
+		;;
+	esac
+	# The OS release
+	# Debian GNU/NetBSD machines have a different userland, and
+	# thus, need a distinct triplet. However, they do not need
+	# kernel version information, so it can be replaced with a
+	# suitable tag, in the style of linux-gnu.
+	case $UNAME_VERSION in
+	    Debian*)
+		release='-gnu'
+		;;
+	    *)
+		release=`echo "$UNAME_RELEASE" | sed -e 's/[-_].*//' | cut -d. -f1,2`
+		;;
+	esac
+	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
+	# contains redundant information, the shorter form:
+	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
+	GUESS=$machine-${os}${release}${abi-}
+	;;
+    *:Bitrig:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
+	GUESS=$UNAME_MACHINE_ARCH-unknown-bitrig$UNAME_RELEASE
+	;;
+    *:OpenBSD:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
+	GUESS=$UNAME_MACHINE_ARCH-unknown-openbsd$UNAME_RELEASE
+	;;
+    *:SecBSD:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/SecBSD.//'`
+	GUESS=$UNAME_MACHINE_ARCH-unknown-secbsd$UNAME_RELEASE
+	;;
+    *:LibertyBSD:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/^.*BSD\.//'`
+	GUESS=$UNAME_MACHINE_ARCH-unknown-libertybsd$UNAME_RELEASE
+	;;
+    *:MidnightBSD:*:*)
+	GUESS=$UNAME_MACHINE-unknown-midnightbsd$UNAME_RELEASE
+	;;
+    *:ekkoBSD:*:*)
+	GUESS=$UNAME_MACHINE-unknown-ekkobsd$UNAME_RELEASE
+	;;
+    *:SolidBSD:*:*)
+	GUESS=$UNAME_MACHINE-unknown-solidbsd$UNAME_RELEASE
+	;;
+    *:OS108:*:*)
+	GUESS=$UNAME_MACHINE-unknown-os108_$UNAME_RELEASE
+	;;
+    macppc:MirBSD:*:*)
+	GUESS=powerpc-unknown-mirbsd$UNAME_RELEASE
+	;;
+    *:MirBSD:*:*)
+	GUESS=$UNAME_MACHINE-unknown-mirbsd$UNAME_RELEASE
+	;;
+    *:Sortix:*:*)
+	GUESS=$UNAME_MACHINE-unknown-sortix
+	;;
+    *:Twizzler:*:*)
+	GUESS=$UNAME_MACHINE-unknown-twizzler
+	;;
+    *:Redox:*:*)
+	GUESS=$UNAME_MACHINE-unknown-redox
+	;;
+    mips:OSF1:*.*)
+	GUESS=mips-dec-osf1
+	;;
+    alpha:OSF1:*:*)
+	# Reset EXIT trap before exiting to avoid spurious non-zero exit code.
+	trap '' 0
+	case $UNAME_RELEASE in
+	*4.0)
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
+		;;
+	*5.*)
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+		;;
+	esac
+	# According to Compaq, /usr/sbin/psrinfo has been available on
+	# OSF/1 and Tru64 systems produced since 1995.  I hope that
+	# covers most systems running today.  This code pipes the CPU
+	# types through head -n 1, so we only detect the type of CPU 0.
+	ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1`
+	case $ALPHA_CPU_TYPE in
+	    "EV4 (21064)")
+		UNAME_MACHINE=alpha ;;
+	    "EV4.5 (21064)")
+		UNAME_MACHINE=alpha ;;
+	    "LCA4 (21066/21068)")
+		UNAME_MACHINE=alpha ;;
+	    "EV5 (21164)")
+		UNAME_MACHINE=alphaev5 ;;
+	    "EV5.6 (21164A)")
+		UNAME_MACHINE=alphaev56 ;;
+	    "EV5.6 (21164PC)")
+		UNAME_MACHINE=alphapca56 ;;
+	    "EV5.7 (21164PC)")
+		UNAME_MACHINE=alphapca57 ;;
+	    "EV6 (21264)")
+		UNAME_MACHINE=alphaev6 ;;
+	    "EV6.7 (21264A)")
+		UNAME_MACHINE=alphaev67 ;;
+	    "EV6.8CB (21264C)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.8AL (21264B)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.8CX (21264D)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.9A (21264/EV69A)")
+		UNAME_MACHINE=alphaev69 ;;
+	    "EV7 (21364)")
+		UNAME_MACHINE=alphaev7 ;;
+	    "EV7.9 (21364A)")
+		UNAME_MACHINE=alphaev79 ;;
+	esac
+	# A Pn.n version is a patched version.
+	# A Vn.n version is a released version.
+	# A Tn.n version is a released field test version.
+	# A Xn.n version is an unreleased experimental baselevel.
+	# 1.2 uses "1.2" for uname -r.
+	OSF_REL=`echo "$UNAME_RELEASE" | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
+	GUESS=$UNAME_MACHINE-dec-osf$OSF_REL
+	;;
+    Amiga*:UNIX_System_V:4.0:*)
+	GUESS=m68k-unknown-sysv4
+	;;
+    *:[Aa]miga[Oo][Ss]:*:*)
+	GUESS=$UNAME_MACHINE-unknown-amigaos
+	;;
+    *:[Mm]orph[Oo][Ss]:*:*)
+	GUESS=$UNAME_MACHINE-unknown-morphos
+	;;
+    *:OS/390:*:*)
+	GUESS=i370-ibm-openedition
+	;;
+    *:z/VM:*:*)
+	GUESS=s390-ibm-zvmoe
+	;;
+    *:OS400:*:*)
+	GUESS=powerpc-ibm-os400
+	;;
+    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
+	GUESS=arm-acorn-riscix$UNAME_RELEASE
+	;;
+    arm*:riscos:*:*|arm*:RISCOS:*:*)
+	GUESS=arm-unknown-riscos
+	;;
+    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
+	GUESS=hppa1.1-hitachi-hiuxmpp
+	;;
+    Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
+	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
+	case `(/bin/universe) 2>/dev/null` in
+	    att) GUESS=pyramid-pyramid-sysv3 ;;
+	    *)   GUESS=pyramid-pyramid-bsd   ;;
+	esac
+	;;
+    NILE*:*:*:dcosx)
+	GUESS=pyramid-pyramid-svr4
+	;;
+    DRS?6000:unix:4.0:6*)
+	GUESS=sparc-icl-nx6
+	;;
+    DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
+	case `/usr/bin/uname -p` in
+	    sparc) GUESS=sparc-icl-nx7 ;;
+	esac
+	;;
+    s390x:SunOS:*:*)
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
+	GUESS=$UNAME_MACHINE-ibm-solaris2$SUN_REL
+	;;
+    sun4H:SunOS:5.*:*)
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
+	GUESS=sparc-hal-solaris2$SUN_REL
+	;;
+    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
+	GUESS=sparc-sun-solaris2$SUN_REL
+	;;
+    i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
+	GUESS=i386-pc-auroraux$UNAME_RELEASE
+	;;
+    i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
+	set_cc_for_build
+	SUN_ARCH=i386
+	# If there is a compiler, see if it is configured for 64-bit objects.
+	# Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
+	# This test works for both compilers.
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
+		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		grep IS_64BIT_ARCH >/dev/null
+	    then
+		SUN_ARCH=x86_64
+	    fi
+	fi
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
+	GUESS=$SUN_ARCH-pc-solaris2$SUN_REL
+	;;
+    sun4*:SunOS:6*:*)
+	# According to config.sub, this is the proper way to canonicalize
+	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
+	# it's likely to be more like Solaris than SunOS4.
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
+	GUESS=sparc-sun-solaris3$SUN_REL
+	;;
+    sun4*:SunOS:*:*)
+	case `/usr/bin/arch -k` in
+	    Series*|S4*)
+		UNAME_RELEASE=`uname -v`
+		;;
+	esac
+	# Japanese Language versions have a version number like `4.1.3-JL'.
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/-/_/'`
+	GUESS=sparc-sun-sunos$SUN_REL
+	;;
+    sun3*:SunOS:*:*)
+	GUESS=m68k-sun-sunos$UNAME_RELEASE
+	;;
+    sun*:*:4.2BSD:*)
+	UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
+	test "x$UNAME_RELEASE" = x && UNAME_RELEASE=3
+	case `/bin/arch` in
+	    sun3)
+		GUESS=m68k-sun-sunos$UNAME_RELEASE
+		;;
+	    sun4)
+		GUESS=sparc-sun-sunos$UNAME_RELEASE
+		;;
+	esac
+	;;
+    aushp:SunOS:*:*)
+	GUESS=sparc-auspex-sunos$UNAME_RELEASE
+	;;
+    # The situation for MiNT is a little confusing.  The machine name
+    # can be virtually everything (everything which is not
+    # "atarist" or "atariste" at least should have a processor
+    # > m68000).  The system name ranges from "MiNT" over "FreeMiNT"
+    # to the lowercase version "mint" (or "freemint").  Finally
+    # the system name "TOS" denotes a system which is actually not
+    # MiNT.  But MiNT is downward compatible to TOS, so this should
+    # be no problem.
+    atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
+	GUESS=m68k-atari-mint$UNAME_RELEASE
+	;;
+    atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
+	GUESS=m68k-atari-mint$UNAME_RELEASE
+	;;
+    *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
+	GUESS=m68k-atari-mint$UNAME_RELEASE
+	;;
+    milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
+	GUESS=m68k-milan-mint$UNAME_RELEASE
+	;;
+    hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
+	GUESS=m68k-hades-mint$UNAME_RELEASE
+	;;
+    *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
+	GUESS=m68k-unknown-mint$UNAME_RELEASE
+	;;
+    m68k:machten:*:*)
+	GUESS=m68k-apple-machten$UNAME_RELEASE
+	;;
+    powerpc:machten:*:*)
+	GUESS=powerpc-apple-machten$UNAME_RELEASE
+	;;
+    RISC*:Mach:*:*)
+	GUESS=mips-dec-mach_bsd4.3
+	;;
+    RISC*:ULTRIX:*:*)
+	GUESS=mips-dec-ultrix$UNAME_RELEASE
+	;;
+    VAX*:ULTRIX*:*:*)
+	GUESS=vax-dec-ultrix$UNAME_RELEASE
+	;;
+    2020:CLIX:*:* | 2430:CLIX:*:*)
+	GUESS=clipper-intergraph-clix$UNAME_RELEASE
+	;;
+    mips:*:*:UMIPS | mips:*:*:RISCos)
+	set_cc_for_build
+	sed 's/^	//' << EOF > "$dummy.c"
+#ifdef __cplusplus
+#include <stdio.h>  /* for printf() prototype */
+	int main (int argc, char *argv[]) {
+#else
+	int main (argc, argv) int argc; char *argv[]; {
+#endif
+	#if defined (host_mips) && defined (MIPSEB)
+	#if defined (SYSTYPE_SYSV)
+	  printf ("mips-mips-riscos%ssysv\\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_SVR4)
+	  printf ("mips-mips-riscos%ssvr4\\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
+	  printf ("mips-mips-riscos%sbsd\\n", argv[1]); exit (0);
+	#endif
+	#endif
+	  exit (-1);
+	}
+EOF
+	$CC_FOR_BUILD -o "$dummy" "$dummy.c" &&
+	  dummyarg=`echo "$UNAME_RELEASE" | sed -n 's/\([0-9]*\).*/\1/p'` &&
+	  SYSTEM_NAME=`"$dummy" "$dummyarg"` &&
+	    { echo "$SYSTEM_NAME"; exit; }
+	GUESS=mips-mips-riscos$UNAME_RELEASE
+	;;
+    Motorola:PowerMAX_OS:*:*)
+	GUESS=powerpc-motorola-powermax
+	;;
+    Motorola:*:4.3:PL8-*)
+	GUESS=powerpc-harris-powermax
+	;;
+    Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
+	GUESS=powerpc-harris-powermax
+	;;
+    Night_Hawk:Power_UNIX:*:*)
+	GUESS=powerpc-harris-powerunix
+	;;
+    m88k:CX/UX:7*:*)
+	GUESS=m88k-harris-cxux7
+	;;
+    m88k:*:4*:R4*)
+	GUESS=m88k-motorola-sysv4
+	;;
+    m88k:*:3*:R3*)
+	GUESS=m88k-motorola-sysv3
+	;;
+    AViiON:dgux:*:*)
+	# DG/UX returns AViiON for all architectures
+	UNAME_PROCESSOR=`/usr/bin/uname -p`
+	if test "$UNAME_PROCESSOR" = mc88100 || test "$UNAME_PROCESSOR" = mc88110
+	then
+	    if test "$TARGET_BINARY_INTERFACE"x = m88kdguxelfx || \
+	       test "$TARGET_BINARY_INTERFACE"x = x
+	    then
+		GUESS=m88k-dg-dgux$UNAME_RELEASE
+	    else
+		GUESS=m88k-dg-dguxbcs$UNAME_RELEASE
+	    fi
+	else
+	    GUESS=i586-dg-dgux$UNAME_RELEASE
+	fi
+	;;
+    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
+	GUESS=m88k-dolphin-sysv3
+	;;
+    M88*:*:R3*:*)
+	# Delta 88k system running SVR3
+	GUESS=m88k-motorola-sysv3
+	;;
+    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
+	GUESS=m88k-tektronix-sysv3
+	;;
+    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
+	GUESS=m68k-tektronix-bsd
+	;;
+    *:IRIX*:*:*)
+	IRIX_REL=`echo "$UNAME_RELEASE" | sed -e 's/-/_/g'`
+	GUESS=mips-sgi-irix$IRIX_REL
+	;;
+    ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
+	GUESS=romp-ibm-aix    # uname -m gives an 8 hex-code CPU id
+	;;                    # Note that: echo "'`uname -s`'" gives 'AIX '
+    i*86:AIX:*:*)
+	GUESS=i386-ibm-aix
+	;;
+    ia64:AIX:*:*)
+	if test -x /usr/bin/oslevel ; then
+		IBM_REV=`/usr/bin/oslevel`
+	else
+		IBM_REV=$UNAME_VERSION.$UNAME_RELEASE
+	fi
+	GUESS=$UNAME_MACHINE-ibm-aix$IBM_REV
+	;;
+    *:AIX:2:3)
+	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
+		set_cc_for_build
+		sed 's/^		//' << EOF > "$dummy.c"
+		#include <sys/systemcfg.h>
+
+		main()
+			{
+			if (!__power_pc())
+				exit(1);
+			puts("powerpc-ibm-aix3.2.5");
+			exit(0);
+			}
+EOF
+		if $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"`
+		then
+			GUESS=$SYSTEM_NAME
+		else
+			GUESS=rs6000-ibm-aix3.2.5
+		fi
+	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
+		GUESS=rs6000-ibm-aix3.2.4
+	else
+		GUESS=rs6000-ibm-aix3.2
+	fi
+	;;
+    *:AIX:*:[4567])
+	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
+	if /usr/sbin/lsattr -El "$IBM_CPU_ID" | grep ' POWER' >/dev/null 2>&1; then
+		IBM_ARCH=rs6000
+	else
+		IBM_ARCH=powerpc
+	fi
+	if test -x /usr/bin/lslpp ; then
+		IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc | \
+			   awk -F: '{ print $3 }' | sed s/[0-9]*$/0/`
+	else
+		IBM_REV=$UNAME_VERSION.$UNAME_RELEASE
+	fi
+	GUESS=$IBM_ARCH-ibm-aix$IBM_REV
+	;;
+    *:AIX:*:*)
+	GUESS=rs6000-ibm-aix
+	;;
+    ibmrt:4.4BSD:*|romp-ibm:4.4BSD:*)
+	GUESS=romp-ibm-bsd4.4
+	;;
+    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
+	GUESS=romp-ibm-bsd$UNAME_RELEASE    # 4.3 with uname added to
+	;;                                  # report: romp-ibm BSD 4.3
+    *:BOSX:*:*)
+	GUESS=rs6000-bull-bosx
+	;;
+    DPX/2?00:B.O.S.:*:*)
+	GUESS=m68k-bull-sysv3
+	;;
+    9000/[34]??:4.3bsd:1.*:*)
+	GUESS=m68k-hp-bsd
+	;;
+    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
+	GUESS=m68k-hp-bsd4.4
+	;;
+    9000/[34678]??:HP-UX:*:*)
+	HPUX_REV=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*.[0B]*//'`
+	case $UNAME_MACHINE in
+	    9000/31?)            HP_ARCH=m68000 ;;
+	    9000/[34]??)         HP_ARCH=m68k ;;
+	    9000/[678][0-9][0-9])
+		if test -x /usr/bin/getconf; then
+		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
+		    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+		    case $sc_cpu_version in
+		      523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0
+		      528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1
+		      532)                      # CPU_PA_RISC2_0
+			case $sc_kernel_bits in
+			  32) HP_ARCH=hppa2.0n ;;
+			  64) HP_ARCH=hppa2.0w ;;
+			  '') HP_ARCH=hppa2.0 ;;   # HP-UX 10.20
+			esac ;;
+		    esac
+		fi
+		if test "$HP_ARCH" = ""; then
+		    set_cc_for_build
+		    sed 's/^		//' << EOF > "$dummy.c"
+
+		#define _HPUX_SOURCE
+		#include <stdlib.h>
+		#include <unistd.h>
+
+		int main ()
+		{
+		#if defined(_SC_KERNEL_BITS)
+		    long bits = sysconf(_SC_KERNEL_BITS);
+		#endif
+		    long cpu  = sysconf (_SC_CPU_VERSION);
+
+		    switch (cpu)
+			{
+			case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+			case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+			case CPU_PA_RISC2_0:
+		#if defined(_SC_KERNEL_BITS)
+			    switch (bits)
+				{
+				case 64: puts ("hppa2.0w"); break;
+				case 32: puts ("hppa2.0n"); break;
+				default: puts ("hppa2.0"); break;
+				} break;
+		#else  /* !defined(_SC_KERNEL_BITS) */
+			    puts ("hppa2.0"); break;
+		#endif
+			default: puts ("hppa1.0"); break;
+			}
+		    exit (0);
+		}
+EOF
+		    (CCOPTS="" $CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null) && HP_ARCH=`"$dummy"`
+		    test -z "$HP_ARCH" && HP_ARCH=hppa
+		fi ;;
+	esac
+	if test "$HP_ARCH" = hppa2.0w
+	then
+	    set_cc_for_build
+
+	    # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
+	    # 32-bit code.  hppa64-hp-hpux* has the same kernel and a compiler
+	    # generating 64-bit code.  GNU and HP use different nomenclature:
+	    #
+	    # $ CC_FOR_BUILD=cc ./config.guess
+	    # => hppa2.0w-hp-hpux11.23
+	    # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
+	    # => hppa64-hp-hpux11.23
+
+	    if echo __LP64__ | (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) |
+		grep -q __LP64__
+	    then
+		HP_ARCH=hppa2.0w
+	    else
+		HP_ARCH=hppa64
+	    fi
+	fi
+	GUESS=$HP_ARCH-hp-hpux$HPUX_REV
+	;;
+    ia64:HP-UX:*:*)
+	HPUX_REV=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*.[0B]*//'`
+	GUESS=ia64-hp-hpux$HPUX_REV
+	;;
+    3050*:HI-UX:*:*)
+	set_cc_for_build
+	sed 's/^	//' << EOF > "$dummy.c"
+	#include <unistd.h>
+	int
+	main ()
+	{
+	  long cpu = sysconf (_SC_CPU_VERSION);
+	  /* The order matters, because CPU_IS_HP_MC68K erroneously returns
+	     true for CPU_PA_RISC1_0.  CPU_IS_PA_RISC returns correct
+	     results, however.  */
+	  if (CPU_IS_PA_RISC (cpu))
+	    {
+	      switch (cpu)
+		{
+		  case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
+		  default: puts ("hppa-hitachi-hiuxwe2"); break;
+		}
+	    }
+	  else if (CPU_IS_HP_MC68K (cpu))
+	    puts ("m68k-hitachi-hiuxwe2");
+	  else puts ("unknown-hitachi-hiuxwe2");
+	  exit (0);
+	}
+EOF
+	$CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` &&
+		{ echo "$SYSTEM_NAME"; exit; }
+	GUESS=unknown-hitachi-hiuxwe2
+	;;
+    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:*)
+	GUESS=hppa1.1-hp-bsd
+	;;
+    9000/8??:4.3bsd:*:*)
+	GUESS=hppa1.0-hp-bsd
+	;;
+    *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
+	GUESS=hppa1.0-hp-mpeix
+	;;
+    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:*)
+	GUESS=hppa1.1-hp-osf
+	;;
+    hp8??:OSF1:*:*)
+	GUESS=hppa1.0-hp-osf
+	;;
+    i*86:OSF1:*:*)
+	if test -x /usr/sbin/sysversion ; then
+	    GUESS=$UNAME_MACHINE-unknown-osf1mk
+	else
+	    GUESS=$UNAME_MACHINE-unknown-osf1
+	fi
+	;;
+    parisc*:Lites*:*:*)
+	GUESS=hppa1.1-hp-lites
+	;;
+    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
+	GUESS=c1-convex-bsd
+	;;
+    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+	exit ;;
+    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
+	GUESS=c34-convex-bsd
+	;;
+    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
+	GUESS=c38-convex-bsd
+	;;
+    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
+	GUESS=c4-convex-bsd
+	;;
+    CRAY*Y-MP:*:*:*)
+	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
+	GUESS=ymp-cray-unicos$CRAY_REL
+	;;
+    CRAY*[A-Z]90:*:*:*)
+	echo "$UNAME_MACHINE"-cray-unicos"$UNAME_RELEASE" \
+	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
+	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
+	      -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*TS:*:*:*)
+	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
+	GUESS=t90-cray-unicos$CRAY_REL
+	;;
+    CRAY*T3E:*:*:*)
+	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
+	GUESS=alphaev5-cray-unicosmk$CRAY_REL
+	;;
+    CRAY*SV1:*:*:*)
+	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
+	GUESS=sv1-cray-unicos$CRAY_REL
+	;;
+    *:UNICOS/mp:*:*)
+	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
+	GUESS=craynv-cray-unicosmp$CRAY_REL
+	;;
+    F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
+	FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
+	FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
+	FUJITSU_REL=`echo "$UNAME_RELEASE" | sed -e 's/ /_/'`
+	GUESS=${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}
+	;;
+    5000:UNIX_System_V:4.*:*)
+	FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
+	FUJITSU_REL=`echo "$UNAME_RELEASE" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'`
+	GUESS=sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}
+	;;
+    i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
+	GUESS=$UNAME_MACHINE-pc-bsdi$UNAME_RELEASE
+	;;
+    sparc*:BSD/OS:*:*)
+	GUESS=sparc-unknown-bsdi$UNAME_RELEASE
+	;;
+    *:BSD/OS:*:*)
+	GUESS=$UNAME_MACHINE-unknown-bsdi$UNAME_RELEASE
+	;;
+    arm:FreeBSD:*:*)
+	UNAME_PROCESSOR=`uname -p`
+	set_cc_for_build
+	if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+	    | grep -q __ARM_PCS_VFP
+	then
+	    FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
+	    GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL-gnueabi
+	else
+	    FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
+	    GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL-gnueabihf
+	fi
+	;;
+    *:FreeBSD:*:*)
+	UNAME_PROCESSOR=`/usr/bin/uname -p`
+	case $UNAME_PROCESSOR in
+	    amd64)
+		UNAME_PROCESSOR=x86_64 ;;
+	    i386)
+		UNAME_PROCESSOR=i586 ;;
+	esac
+	FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
+	GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL
+	;;
+    i*:CYGWIN*:*)
+	GUESS=$UNAME_MACHINE-pc-cygwin
+	;;
+    *:MINGW64*:*)
+	GUESS=$UNAME_MACHINE-pc-mingw64
+	;;
+    *:MINGW*:*)
+	GUESS=$UNAME_MACHINE-pc-mingw32
+	;;
+    *:MSYS*:*)
+	GUESS=$UNAME_MACHINE-pc-msys
+	;;
+    i*:PW*:*)
+	GUESS=$UNAME_MACHINE-pc-pw32
+	;;
+    *:Interix*:*)
+	case $UNAME_MACHINE in
+	    x86)
+		GUESS=i586-pc-interix$UNAME_RELEASE
+		;;
+	    authenticamd | genuineintel | EM64T)
+		GUESS=x86_64-unknown-interix$UNAME_RELEASE
+		;;
+	    IA64)
+		GUESS=ia64-unknown-interix$UNAME_RELEASE
+		;;
+	esac ;;
+    i*:UWIN*:*)
+	GUESS=$UNAME_MACHINE-pc-uwin
+	;;
+    amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
+	GUESS=x86_64-pc-cygwin
+	;;
+    prep*:SunOS:5.*:*)
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
+	GUESS=powerpcle-unknown-solaris2$SUN_REL
+	;;
+    *:GNU:*:*)
+	# the GNU system
+	GNU_ARCH=`echo "$UNAME_MACHINE" | sed -e 's,[-/].*$,,'`
+	GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's,/.*$,,'`
+	GUESS=$GNU_ARCH-unknown-$LIBC$GNU_REL
+	;;
+    *:GNU/*:*:*)
+	# other systems with GNU libc and userland
+	GNU_SYS=`echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]"`
+	GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
+	GUESS=$UNAME_MACHINE-unknown-$GNU_SYS$GNU_REL-$LIBC
+	;;
+    *:Minix:*:*)
+	GUESS=$UNAME_MACHINE-unknown-minix
+	;;
+    aarch64:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    aarch64_be:Linux:*:*)
+	UNAME_MACHINE=aarch64_be
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    alpha:Linux:*:*)
+	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' /proc/cpuinfo 2>/dev/null` in
+	  EV5)   UNAME_MACHINE=alphaev5 ;;
+	  EV56)  UNAME_MACHINE=alphaev56 ;;
+	  PCA56) UNAME_MACHINE=alphapca56 ;;
+	  PCA57) UNAME_MACHINE=alphapca56 ;;
+	  EV6)   UNAME_MACHINE=alphaev6 ;;
+	  EV67)  UNAME_MACHINE=alphaev67 ;;
+	  EV68*) UNAME_MACHINE=alphaev68 ;;
+	esac
+	objdump --private-headers /bin/sh | grep -q ld.so.1
+	if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    arc:Linux:*:* | arceb:Linux:*:* | arc32:Linux:*:* | arc64:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    arm*:Linux:*:*)
+	set_cc_for_build
+	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
+	    | grep -q __ARM_EABI__
+	then
+	    GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	else
+	    if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+		| grep -q __ARM_PCS_VFP
+	    then
+		GUESS=$UNAME_MACHINE-unknown-linux-${LIBC}eabi
+	    else
+		GUESS=$UNAME_MACHINE-unknown-linux-${LIBC}eabihf
+	    fi
+	fi
+	;;
+    avr32*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    cris:Linux:*:*)
+	GUESS=$UNAME_MACHINE-axis-linux-$LIBC
+	;;
+    crisv32:Linux:*:*)
+	GUESS=$UNAME_MACHINE-axis-linux-$LIBC
+	;;
+    e2k:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    frv:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    hexagon:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    i*86:Linux:*:*)
+	GUESS=$UNAME_MACHINE-pc-linux-$LIBC
+	;;
+    ia64:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    k1om:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    loongarch32:Linux:*:* | loongarch64:Linux:*:* | loongarchx32:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    m32r*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    m68*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    mips:Linux:*:* | mips64:Linux:*:*)
+	set_cc_for_build
+	IS_GLIBC=0
+	test x"${LIBC}" = xgnu && IS_GLIBC=1
+	sed 's/^	//' << EOF > "$dummy.c"
+	#undef CPU
+	#undef mips
+	#undef mipsel
+	#undef mips64
+	#undef mips64el
+	#if ${IS_GLIBC} && defined(_ABI64)
+	LIBCABI=gnuabi64
+	#else
+	#if ${IS_GLIBC} && defined(_ABIN32)
+	LIBCABI=gnuabin32
+	#else
+	LIBCABI=${LIBC}
+	#endif
+	#endif
+
+	#if ${IS_GLIBC} && defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6
+	CPU=mipsisa64r6
+	#else
+	#if ${IS_GLIBC} && !defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6
+	CPU=mipsisa32r6
+	#else
+	#if defined(__mips64)
+	CPU=mips64
+	#else
+	CPU=mips
+	#endif
+	#endif
+	#endif
+
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	MIPS_ENDIAN=el
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	MIPS_ENDIAN=
+	#else
+	MIPS_ENDIAN=
+	#endif
+	#endif
+EOF
+	cc_set_vars=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^CPU\|^MIPS_ENDIAN\|^LIBCABI'`
+	eval "$cc_set_vars"
+	test "x$CPU" != x && { echo "$CPU${MIPS_ENDIAN}-unknown-linux-$LIBCABI"; exit; }
+	;;
+    mips64el:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    openrisc*:Linux:*:*)
+	GUESS=or1k-unknown-linux-$LIBC
+	;;
+    or32:Linux:*:* | or1k*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    padre:Linux:*:*)
+	GUESS=sparc-unknown-linux-$LIBC
+	;;
+    parisc64:Linux:*:* | hppa64:Linux:*:*)
+	GUESS=hppa64-unknown-linux-$LIBC
+	;;
+    parisc:Linux:*:* | hppa:Linux:*:*)
+	# Look for CPU level
+	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
+	  PA7*) GUESS=hppa1.1-unknown-linux-$LIBC ;;
+	  PA8*) GUESS=hppa2.0-unknown-linux-$LIBC ;;
+	  *)    GUESS=hppa-unknown-linux-$LIBC ;;
+	esac
+	;;
+    ppc64:Linux:*:*)
+	GUESS=powerpc64-unknown-linux-$LIBC
+	;;
+    ppc:Linux:*:*)
+	GUESS=powerpc-unknown-linux-$LIBC
+	;;
+    ppc64le:Linux:*:*)
+	GUESS=powerpc64le-unknown-linux-$LIBC
+	;;
+    ppcle:Linux:*:*)
+	GUESS=powerpcle-unknown-linux-$LIBC
+	;;
+    riscv32:Linux:*:* | riscv32be:Linux:*:* | riscv64:Linux:*:* | riscv64be:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    s390:Linux:*:* | s390x:Linux:*:*)
+	GUESS=$UNAME_MACHINE-ibm-linux-$LIBC
+	;;
+    sh64*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    sh*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    sparc:Linux:*:* | sparc64:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    tile*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    vax:Linux:*:*)
+	GUESS=$UNAME_MACHINE-dec-linux-$LIBC
+	;;
+    x86_64:Linux:*:*)
+	set_cc_for_build
+	LIBCABI=$LIBC
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    if (echo '#ifdef __ILP32__'; echo IS_X32; echo '#endif') | \
+		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		grep IS_X32 >/dev/null
+	    then
+		LIBCABI=${LIBC}x32
+	    fi
+	fi
+	GUESS=$UNAME_MACHINE-pc-linux-$LIBCABI
+	;;
+    xtensa*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    i*86:DYNIX/ptx:4*:*)
+	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
+	# earlier versions are messed up and put the nodename in both
+	# sysname and nodename.
+	GUESS=i386-sequent-sysv4
+	;;
+    i*86:UNIX_SV:4.2MP:2.*)
+	# Unixware is an offshoot of SVR4, but it has its own version
+	# number series starting with 2...
+	# I am not positive that other SVR4 systems won't match this,
+	# I just have to hope.  -- rms.
+	# Use sysv4.2uw... so that sysv4* matches it.
+	GUESS=$UNAME_MACHINE-pc-sysv4.2uw$UNAME_VERSION
+	;;
+    i*86:OS/2:*:*)
+	# If we were able to find `uname', then EMX Unix compatibility
+	# is probably installed.
+	GUESS=$UNAME_MACHINE-pc-os2-emx
+	;;
+    i*86:XTS-300:*:STOP)
+	GUESS=$UNAME_MACHINE-unknown-stop
+	;;
+    i*86:atheos:*:*)
+	GUESS=$UNAME_MACHINE-unknown-atheos
+	;;
+    i*86:syllable:*:*)
+	GUESS=$UNAME_MACHINE-pc-syllable
+	;;
+    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*)
+	GUESS=i386-unknown-lynxos$UNAME_RELEASE
+	;;
+    i*86:*DOS:*:*)
+	GUESS=$UNAME_MACHINE-pc-msdosdjgpp
+	;;
+    i*86:*:4.*:*)
+	UNAME_REL=`echo "$UNAME_RELEASE" | sed 's/\/MP$//'`
+	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
+		GUESS=$UNAME_MACHINE-univel-sysv$UNAME_REL
+	else
+		GUESS=$UNAME_MACHINE-pc-sysv$UNAME_REL
+	fi
+	;;
+    i*86:*:5:[678]*)
+	# UnixWare 7.x, OpenUNIX and OpenServer 6.
+	case `/bin/uname -X | grep "^Machine"` in
+	    *486*)	     UNAME_MACHINE=i486 ;;
+	    *Pentium)	     UNAME_MACHINE=i586 ;;
+	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
+	esac
+	GUESS=$UNAME_MACHINE-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
+	;;
+    i*86:*:3.2:*)
+	if test -f /usr/options/cb.name; then
+		UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
+		GUESS=$UNAME_MACHINE-pc-isc$UNAME_REL
+	elif /bin/uname -X 2>/dev/null >/dev/null ; then
+		UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
+		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
+		(/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
+			&& UNAME_MACHINE=i586
+		(/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		GUESS=$UNAME_MACHINE-pc-sco$UNAME_REL
+	else
+		GUESS=$UNAME_MACHINE-pc-sysv32
+	fi
+	;;
+    pc:*:*:*)
+	# Left here for compatibility:
+	# uname -m prints for DJGPP always 'pc', but it prints nothing about
+	# the processor, so we play safe by assuming i586.
+	# Note: whatever this is, it MUST be the same as what config.sub
+	# prints for the "djgpp" host, or else GDB configure will decide that
+	# this is a cross-build.
+	GUESS=i586-pc-msdosdjgpp
+	;;
+    Intel:Mach:3*:*)
+	GUESS=i386-pc-mach3
+	;;
+    paragon:*:*:*)
+	GUESS=i860-intel-osf1
+	;;
+    i860:*:4.*:*) # i860-SVR4
+	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
+	  GUESS=i860-stardent-sysv$UNAME_RELEASE    # Stardent Vistra i860-SVR4
+	else # Add other i860-SVR4 vendors below as they are discovered.
+	  GUESS=i860-unknown-sysv$UNAME_RELEASE     # Unknown i860-SVR4
+	fi
+	;;
+    mini*:CTIX:SYS*5:*)
+	# "miniframe"
+	GUESS=m68010-convergent-sysv
+	;;
+    mc68k:UNIX:SYSTEM5:3.51m)
+	GUESS=m68k-convergent-sysv
+	;;
+    M680?0:D-NIX:5.3:*)
+	GUESS=m68k-diab-dnix
+	;;
+    M68*:*:R3V[5678]*:*)
+	test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
+    3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
+	OS_REL=''
+	test -r /etc/.relid \
+	&& OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4.3"$OS_REL"; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	  && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;;
+    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4; exit; } ;;
+    NCR*:*:4.2:* | MPRAS*:*:4.2:*)
+	OS_REL='.3'
+	test -r /etc/.relid \
+	    && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	    && { echo i486-ncr-sysv4.3"$OS_REL"; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	    && { echo i586-ncr-sysv4.3"$OS_REL"; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
+	    && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;;
+    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
+	GUESS=m68k-unknown-lynxos$UNAME_RELEASE
+	;;
+    mc68030:UNIX_System_V:4.*:*)
+	GUESS=m68k-atari-sysv4
+	;;
+    TSUNAMI:LynxOS:2.*:*)
+	GUESS=sparc-unknown-lynxos$UNAME_RELEASE
+	;;
+    rs6000:LynxOS:2.*:*)
+	GUESS=rs6000-unknown-lynxos$UNAME_RELEASE
+	;;
+    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*)
+	GUESS=powerpc-unknown-lynxos$UNAME_RELEASE
+	;;
+    SM[BE]S:UNIX_SV:*:*)
+	GUESS=mips-dde-sysv$UNAME_RELEASE
+	;;
+    RM*:ReliantUNIX-*:*:*)
+	GUESS=mips-sni-sysv4
+	;;
+    RM*:SINIX-*:*:*)
+	GUESS=mips-sni-sysv4
+	;;
+    *:SINIX-*:*:*)
+	if uname -p 2>/dev/null >/dev/null ; then
+		UNAME_MACHINE=`(uname -p) 2>/dev/null`
+		GUESS=$UNAME_MACHINE-sni-sysv4
+	else
+		GUESS=ns32k-sni-sysv
+	fi
+	;;
+    PENTIUM:*:4.0*:*)	# Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+			# says <Richard.M.Bartel@ccMail.Census.GOV>
+	GUESS=i586-unisys-sysv4
+	;;
+    *:UNIX_System_V:4*:FTX*)
+	# From Gerald Hewes <hewes@openmarket.com>.
+	# How about differentiating between stratus architectures? -djm
+	GUESS=hppa1.1-stratus-sysv4
+	;;
+    *:*:*:FTX*)
+	# From seanf@swdc.stratus.com.
+	GUESS=i860-stratus-sysv4
+	;;
+    i*86:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	GUESS=$UNAME_MACHINE-stratus-vos
+	;;
+    *:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	GUESS=hppa1.1-stratus-vos
+	;;
+    mc68*:A/UX:*:*)
+	GUESS=m68k-apple-aux$UNAME_RELEASE
+	;;
+    news*:NEWS-OS:6*:*)
+	GUESS=mips-sony-newsos6
+	;;
+    R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
+	if test -d /usr/nec; then
+		GUESS=mips-nec-sysv$UNAME_RELEASE
+	else
+		GUESS=mips-unknown-sysv$UNAME_RELEASE
+	fi
+	;;
+    BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
+	GUESS=powerpc-be-beos
+	;;
+    BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
+	GUESS=powerpc-apple-beos
+	;;
+    BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
+	GUESS=i586-pc-beos
+	;;
+    BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
+	GUESS=i586-pc-haiku
+	;;
+    x86_64:Haiku:*:*)
+	GUESS=x86_64-unknown-haiku
+	;;
+    SX-4:SUPER-UX:*:*)
+	GUESS=sx4-nec-superux$UNAME_RELEASE
+	;;
+    SX-5:SUPER-UX:*:*)
+	GUESS=sx5-nec-superux$UNAME_RELEASE
+	;;
+    SX-6:SUPER-UX:*:*)
+	GUESS=sx6-nec-superux$UNAME_RELEASE
+	;;
+    SX-7:SUPER-UX:*:*)
+	GUESS=sx7-nec-superux$UNAME_RELEASE
+	;;
+    SX-8:SUPER-UX:*:*)
+	GUESS=sx8-nec-superux$UNAME_RELEASE
+	;;
+    SX-8R:SUPER-UX:*:*)
+	GUESS=sx8r-nec-superux$UNAME_RELEASE
+	;;
+    SX-ACE:SUPER-UX:*:*)
+	GUESS=sxace-nec-superux$UNAME_RELEASE
+	;;
+    Power*:Rhapsody:*:*)
+	GUESS=powerpc-apple-rhapsody$UNAME_RELEASE
+	;;
+    *:Rhapsody:*:*)
+	GUESS=$UNAME_MACHINE-apple-rhapsody$UNAME_RELEASE
+	;;
+    arm64:Darwin:*:*)
+	GUESS=aarch64-apple-darwin$UNAME_RELEASE
+	;;
+    *:Darwin:*:*)
+	UNAME_PROCESSOR=`uname -p`
+	case $UNAME_PROCESSOR in
+	    unknown) UNAME_PROCESSOR=powerpc ;;
+	esac
+	if command -v xcode-select > /dev/null 2> /dev/null && \
+		! xcode-select --print-path > /dev/null 2> /dev/null ; then
+	    # Avoid executing cc if there is no toolchain installed as
+	    # cc will be a stub that puts up a graphical alert
+	    # prompting the user to install developer tools.
+	    CC_FOR_BUILD=no_compiler_found
+	else
+	    set_cc_for_build
+	fi
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
+		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		   grep IS_64BIT_ARCH >/dev/null
+	    then
+		case $UNAME_PROCESSOR in
+		    i386) UNAME_PROCESSOR=x86_64 ;;
+		    powerpc) UNAME_PROCESSOR=powerpc64 ;;
+		esac
+	    fi
+	    # On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc
+	    if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \
+		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		   grep IS_PPC >/dev/null
+	    then
+		UNAME_PROCESSOR=powerpc
+	    fi
+	elif test "$UNAME_PROCESSOR" = i386 ; then
+	    # uname -m returns i386 or x86_64
+	    UNAME_PROCESSOR=$UNAME_MACHINE
+	fi
+	GUESS=$UNAME_PROCESSOR-apple-darwin$UNAME_RELEASE
+	;;
+    *:procnto*:*:* | *:QNX:[0123456789]*:*)
+	UNAME_PROCESSOR=`uname -p`
+	if test "$UNAME_PROCESSOR" = x86; then
+		UNAME_PROCESSOR=i386
+		UNAME_MACHINE=pc
+	fi
+	GUESS=$UNAME_PROCESSOR-$UNAME_MACHINE-nto-qnx$UNAME_RELEASE
+	;;
+    *:QNX:*:4*)
+	GUESS=i386-pc-qnx
+	;;
+    NEO-*:NONSTOP_KERNEL:*:*)
+	GUESS=neo-tandem-nsk$UNAME_RELEASE
+	;;
+    NSE-*:NONSTOP_KERNEL:*:*)
+	GUESS=nse-tandem-nsk$UNAME_RELEASE
+	;;
+    NSR-*:NONSTOP_KERNEL:*:*)
+	GUESS=nsr-tandem-nsk$UNAME_RELEASE
+	;;
+    NSV-*:NONSTOP_KERNEL:*:*)
+	GUESS=nsv-tandem-nsk$UNAME_RELEASE
+	;;
+    NSX-*:NONSTOP_KERNEL:*:*)
+	GUESS=nsx-tandem-nsk$UNAME_RELEASE
+	;;
+    *:NonStop-UX:*:*)
+	GUESS=mips-compaq-nonstopux
+	;;
+    BS2000:POSIX*:*:*)
+	GUESS=bs2000-siemens-sysv
+	;;
+    DS/*:UNIX_System_V:*:*)
+	GUESS=$UNAME_MACHINE-$UNAME_SYSTEM-$UNAME_RELEASE
+	;;
+    *:Plan9:*:*)
+	# "uname -m" is not consistent, so use $cputype instead. 386
+	# is converted to i386 for consistency with other x86
+	# operating systems.
+	if test "${cputype-}" = 386; then
+	    UNAME_MACHINE=i386
+	elif test "x${cputype-}" != x; then
+	    UNAME_MACHINE=$cputype
+	fi
+	GUESS=$UNAME_MACHINE-unknown-plan9
+	;;
+    *:TOPS-10:*:*)
+	GUESS=pdp10-unknown-tops10
+	;;
+    *:TENEX:*:*)
+	GUESS=pdp10-unknown-tenex
+	;;
+    KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
+	GUESS=pdp10-dec-tops20
+	;;
+    XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
+	GUESS=pdp10-xkl-tops20
+	;;
+    *:TOPS-20:*:*)
+	GUESS=pdp10-unknown-tops20
+	;;
+    *:ITS:*:*)
+	GUESS=pdp10-unknown-its
+	;;
+    SEI:*:*:SEIUX)
+	GUESS=mips-sei-seiux$UNAME_RELEASE
+	;;
+    *:DragonFly:*:*)
+	DRAGONFLY_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
+	GUESS=$UNAME_MACHINE-unknown-dragonfly$DRAGONFLY_REL
+	;;
+    *:*VMS:*:*)
+	UNAME_MACHINE=`(uname -p) 2>/dev/null`
+	case $UNAME_MACHINE in
+	    A*) GUESS=alpha-dec-vms ;;
+	    I*) GUESS=ia64-dec-vms ;;
+	    V*) GUESS=vax-dec-vms ;;
+	esac ;;
+    *:XENIX:*:SysV)
+	GUESS=i386-pc-xenix
+	;;
+    i*86:skyos:*:*)
+	SKYOS_REL=`echo "$UNAME_RELEASE" | sed -e 's/ .*$//'`
+	GUESS=$UNAME_MACHINE-pc-skyos$SKYOS_REL
+	;;
+    i*86:rdos:*:*)
+	GUESS=$UNAME_MACHINE-pc-rdos
+	;;
+    *:AROS:*:*)
+	GUESS=$UNAME_MACHINE-unknown-aros
+	;;
+    x86_64:VMkernel:*:*)
+	GUESS=$UNAME_MACHINE-unknown-esx
+	;;
+    amd64:Isilon\ OneFS:*:*)
+	GUESS=x86_64-unknown-onefs
+	;;
+    *:Unleashed:*:*)
+	GUESS=$UNAME_MACHINE-unknown-unleashed$UNAME_RELEASE
+	;;
+esac
+
+# Do we have a guess based on uname results?
+if test "x$GUESS" != x; then
+    echo "$GUESS"
+    exit
+fi
+
+# No uname command or uname output not recognized.
+set_cc_for_build
+cat > "$dummy.c" <<EOF
+#ifdef _SEQUENT_
+#include <sys/types.h>
+#include <sys/utsname.h>
+#endif
+#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__)
+#if defined (vax) || defined (__vax) || defined (__vax__) || defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)
+#include <signal.h>
+#if defined(_SIZE_T_) || defined(SIGLOST)
+#include <sys/utsname.h>
+#endif
+#endif
+#endif
+main ()
+{
+#if defined (sony)
+#if defined (MIPSEB)
+  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
+     I don't know....  */
+  printf ("mips-sony-bsd\n"); exit (0);
+#else
+#include <sys/param.h>
+  printf ("m68k-sony-newsos%s\n",
+#ifdef NEWSOS4
+  "4"
+#else
+  ""
+#endif
+  ); exit (0);
+#endif
+#endif
+
+#if defined (NeXT)
+#if !defined (__ARCHITECTURE__)
+#define __ARCHITECTURE__ "m68k"
+#endif
+  int version;
+  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
+  if (version < 4)
+    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
+  else
+    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
+  exit (0);
+#endif
+
+#if defined (MULTIMAX) || defined (n16)
+#if defined (UMAXV)
+  printf ("ns32k-encore-sysv\n"); exit (0);
+#else
+#if defined (CMU)
+  printf ("ns32k-encore-mach\n"); exit (0);
+#else
+  printf ("ns32k-encore-bsd\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (__386BSD__)
+  printf ("i386-pc-bsd\n"); exit (0);
+#endif
+
+#if defined (sequent)
+#if defined (i386)
+  printf ("i386-sequent-dynix\n"); exit (0);
+#endif
+#if defined (ns32000)
+  printf ("ns32k-sequent-dynix\n"); exit (0);
+#endif
+#endif
+
+#if defined (_SEQUENT_)
+  struct utsname un;
+
+  uname(&un);
+  if (strncmp(un.version, "V2", 2) == 0) {
+    printf ("i386-sequent-ptx2\n"); exit (0);
+  }
+  if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
+    printf ("i386-sequent-ptx1\n"); exit (0);
+  }
+  printf ("i386-sequent-ptx\n"); exit (0);
+#endif
+
+#if defined (vax)
+#if !defined (ultrix)
+#include <sys/param.h>
+#if defined (BSD)
+#if BSD == 43
+  printf ("vax-dec-bsd4.3\n"); exit (0);
+#else
+#if BSD == 199006
+  printf ("vax-dec-bsd4.3reno\n"); exit (0);
+#else
+  printf ("vax-dec-bsd\n"); exit (0);
+#endif
+#endif
+#else
+  printf ("vax-dec-bsd\n"); exit (0);
+#endif
+#else
+#if defined(_SIZE_T_) || defined(SIGLOST)
+  struct utsname un;
+  uname (&un);
+  printf ("vax-dec-ultrix%s\n", un.release); exit (0);
+#else
+  printf ("vax-dec-ultrix\n"); exit (0);
+#endif
+#endif
+#endif
+#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__)
+#if defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)
+#if defined(_SIZE_T_) || defined(SIGLOST)
+  struct utsname *un;
+  uname (&un);
+  printf ("mips-dec-ultrix%s\n", un.release); exit (0);
+#else
+  printf ("mips-dec-ultrix\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (alliant) && defined (i860)
+  printf ("i860-alliant-bsd\n"); exit (0);
+#endif
+
+  exit (1);
+}
+EOF
+
+$CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null && SYSTEM_NAME=`"$dummy"` &&
+	{ echo "$SYSTEM_NAME"; exit; }
+
+# Apollos put the system type in the environment.
+test -d /usr/apollo && { echo "$ISP-apollo-$SYSTYPE"; exit; }
+
+echo "$0: unable to guess system type" >&2
+
+case $UNAME_MACHINE:$UNAME_SYSTEM in
+    mips:Linux | mips64:Linux)
+	# If we got here on MIPS GNU/Linux, output extra information.
+	cat >&2 <<EOF
+
+NOTE: MIPS GNU/Linux systems require a C compiler to fully recognize
+the system type. Please install a C compiler and try again.
+EOF
+	;;
+esac
+
+cat >&2 <<EOF
+
+This script (version $timestamp), has failed to recognize the
+operating system you are using. If your script is old, overwrite *all*
+copies of config.guess and config.sub with the latest versions from:
+
+  https://git.savannah.gnu.org/cgit/config.git/plain/config.guess
+and
+  https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
+EOF
+
+our_year=`echo $timestamp | sed 's,-.*,,'`
+thisyear=`date +%Y`
+# shellcheck disable=SC2003
+script_age=`expr "$thisyear" - "$our_year"`
+if test "$script_age" -lt 3 ; then
+   cat >&2 <<EOF
+
+If $0 has already been updated, send the following data and any
+information you think might be pertinent to config-patches@gnu.org to
+provide the necessary information to handle your system.
+
+config.guess timestamp = $timestamp
+
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null`
+
+hostinfo               = `(hostinfo) 2>/dev/null`
+/bin/universe          = `(/bin/universe) 2>/dev/null`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null`
+/bin/arch              = `(/bin/arch) 2>/dev/null`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
+
+UNAME_MACHINE = "$UNAME_MACHINE"
+UNAME_RELEASE = "$UNAME_RELEASE"
+UNAME_SYSTEM  = "$UNAME_SYSTEM"
+UNAME_VERSION = "$UNAME_VERSION"
+EOF
+fi
+
+exit 1
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/src/grep/build-aux/config.rpath b/src/grep/build-aux/config.rpath
new file mode 100755
index 0000000..4b7dc49
--- /dev/null
+++ b/src/grep/build-aux/config.rpath
@@ -0,0 +1,684 @@
+#! /bin/sh
+# Output a system dependent set of variables, describing how to set the
+# run time search path of shared libraries in an executable.
+#
+#   Copyright 1996-2021 Free Software Foundation, Inc.
+#   Taken from GNU libtool, 2001
+#   Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
+#
+#   This file is free software; the Free Software Foundation gives
+#   unlimited permission to copy and/or distribute it, with or without
+#   modifications, as long as this notice is preserved.
+#
+# The first argument passed to this file is the canonical host specification,
+#    CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or
+#    CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# The environment variables CC, GCC, LDFLAGS, LD, with_gnu_ld
+# should be set by the caller.
+#
+# The set of defined variables is at the end of this script.
+
+# Known limitations:
+# - On IRIX 6.5 with CC="cc", the run time search patch must not be longer
+#   than 256 bytes, otherwise the compiler driver will dump core. The only
+#   known workaround is to choose shorter directory names for the build
+#   directory and/or the installation directory.
+
+# All known linkers require a '.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+shrext=.so
+
+host="$1"
+host_cpu=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+host_vendor=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+host_os=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+# Code taken from libtool.m4's _LT_CC_BASENAME.
+
+for cc_temp in $CC""; do
+  case $cc_temp in
+    compile | *[\\/]compile | ccache | *[\\/]ccache ) ;;
+    distcc | *[\\/]distcc | purify | *[\\/]purify ) ;;
+    \-*) ;;
+    *) break;;
+  esac
+done
+cc_basename=`echo "$cc_temp" | sed -e 's%^.*/%%'`
+
+# Code taken from libtool.m4's _LT_COMPILER_PIC.
+
+wl=
+if test "$GCC" = yes; then
+  wl='-Wl,'
+else
+  case "$host_os" in
+    aix*)
+      wl='-Wl,'
+      ;;
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      ;;
+    hpux9* | hpux10* | hpux11*)
+      wl='-Wl,'
+      ;;
+    irix5* | irix6* | nonstopux*)
+      wl='-Wl,'
+      ;;
+    linux* | k*bsd*-gnu | kopensolaris*-gnu)
+      case $cc_basename in
+        ecc*)
+          wl='-Wl,'
+          ;;
+        icc* | ifort*)
+          wl='-Wl,'
+          ;;
+        lf95*)
+          wl='-Wl,'
+          ;;
+        nagfor*)
+          wl='-Wl,-Wl,,'
+          ;;
+        pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
+          wl='-Wl,'
+          ;;
+        ccc*)
+          wl='-Wl,'
+          ;;
+        xl* | bgxl* | bgf* | mpixl*)
+          wl='-Wl,'
+          ;;
+        como)
+          wl='-lopt='
+          ;;
+        *)
+          case `$CC -V 2>&1 | sed 5q` in
+            *Sun\ F* | *Sun*Fortran*)
+              wl=
+              ;;
+            *Sun\ C*)
+              wl='-Wl,'
+              ;;
+          esac
+          ;;
+      esac
+      ;;
+    newsos6)
+      ;;
+    *nto* | *qnx*)
+      ;;
+    osf3* | osf4* | osf5*)
+      wl='-Wl,'
+      ;;
+    rdos*)
+      ;;
+    solaris*)
+      case $cc_basename in
+        f77* | f90* | f95* | sunf77* | sunf90* | sunf95*)
+          wl='-Qoption ld '
+          ;;
+        *)
+          wl='-Wl,'
+          ;;
+      esac
+      ;;
+    sunos4*)
+      wl='-Qoption ld '
+      ;;
+    sysv4 | sysv4.2uw2* | sysv4.3*)
+      wl='-Wl,'
+      ;;
+    sysv4*MP*)
+      ;;
+    sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+      wl='-Wl,'
+      ;;
+    unicos*)
+      wl='-Wl,'
+      ;;
+    uts4*)
+      ;;
+  esac
+fi
+
+# Code taken from libtool.m4's _LT_LINKER_SHLIBS.
+
+hardcode_libdir_flag_spec=
+hardcode_libdir_separator=
+hardcode_direct=no
+hardcode_minus_L=no
+
+case "$host_os" in
+  cygwin* | mingw* | pw32* | cegcc*)
+    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # When not using gcc, we currently assume that we are using
+    # Microsoft Visual C++.
+    if test "$GCC" != yes; then
+      with_gnu_ld=no
+    fi
+    ;;
+  interix*)
+    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    with_gnu_ld=yes
+    ;;
+  openbsd*)
+    with_gnu_ld=no
+    ;;
+esac
+
+ld_shlibs=yes
+if test "$with_gnu_ld" = yes; then
+  # Set some defaults for GNU ld with shared library support. These
+  # are reset later if shared libraries are not supported. Putting them
+  # here allows them to be overridden if necessary.
+  # Unlike libtool, we use -rpath here, not --rpath, since the documented
+  # option of GNU ld is called -rpath, not --rpath.
+  hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+  case "$host_os" in
+    aix[3-9]*)
+      # On AIX/PPC, the GNU linker is very broken
+      if test "$host_cpu" != ia64; then
+        ld_shlibs=no
+      fi
+      ;;
+    amigaos*)
+      case "$host_cpu" in
+        powerpc)
+          ;;
+        m68k)
+          hardcode_libdir_flag_spec='-L$libdir'
+          hardcode_minus_L=yes
+          ;;
+      esac
+      ;;
+    beos*)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    cygwin* | mingw* | pw32* | cegcc*)
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec='-L$libdir'
+      if $LD --help 2>&1 | grep 'auto-import' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    haiku*)
+      ;;
+    interix[3-9]*)
+      hardcode_direct=no
+      hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+      ;;
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    netbsd*)
+      ;;
+    solaris*)
+      if $LD -v 2>&1 | grep 'BFD 2\.8' > /dev/null; then
+        ld_shlibs=no
+      elif $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+      case `$LD -v 2>&1` in
+        *\ [01].* | *\ 2.[0-9].* | *\ 2.1[0-5].*)
+          ld_shlibs=no
+          ;;
+        *)
+          if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+            hardcode_libdir_flag_spec='`test -z "$SCOABSPATH" && echo ${wl}-rpath,$libdir`'
+          else
+            ld_shlibs=no
+          fi
+          ;;
+      esac
+      ;;
+    sunos4*)
+      hardcode_direct=yes
+      ;;
+    *)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+  esac
+  if test "$ld_shlibs" = no; then
+    hardcode_libdir_flag_spec=
+  fi
+else
+  case "$host_os" in
+    aix3*)
+      # Note: this linker hardcodes the directories in LIBPATH if there
+      # are no directories specified by -L.
+      hardcode_minus_L=yes
+      if test "$GCC" = yes; then
+        # Neither direct hardcoding nor static linking is supported with a
+        # broken collect2.
+        hardcode_direct=unsupported
+      fi
+      ;;
+    aix[4-9]*)
+      if test "$host_cpu" = ia64; then
+        # On IA64, the linker does run time linking by default, so we don't
+        # have to do anything special.
+        aix_use_runtimelinking=no
+      else
+        aix_use_runtimelinking=no
+        # Test if we are trying to use run time linking or normal
+        # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+        # need to do runtime linking.
+        case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*)
+          for ld_flag in $LDFLAGS; do
+            if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+              aix_use_runtimelinking=yes
+              break
+            fi
+          done
+          ;;
+        esac
+      fi
+      hardcode_direct=yes
+      hardcode_libdir_separator=':'
+      if test "$GCC" = yes; then
+        case $host_os in aix4.[012]|aix4.[012].*)
+          collect2name=`${CC} -print-prog-name=collect2`
+          if test -f "$collect2name" && \
+            strings "$collect2name" | grep resolve_lib_name >/dev/null
+          then
+            # We have reworked collect2
+            :
+          else
+            # We have old collect2
+            hardcode_direct=unsupported
+            hardcode_minus_L=yes
+            hardcode_libdir_flag_spec='-L$libdir'
+            hardcode_libdir_separator=
+          fi
+          ;;
+        esac
+      fi
+      # Begin _LT_AC_SYS_LIBPATH_AIX.
+      echo 'int main () { return 0; }' > conftest.c
+      ${CC} ${LDFLAGS} conftest.c -o conftest
+      aix_libpath=`dump -H conftest 2>/dev/null | sed -n -e '/Import File Strings/,/^$/ { /^0/ { s/^0  *\(.*\)$/\1/; p; }
+}'`
+      if test -z "$aix_libpath"; then
+        aix_libpath=`dump -HX64 conftest 2>/dev/null | sed -n -e '/Import File Strings/,/^$/ { /^0/ { s/^0  *\(.*\)$/\1/; p; }
+}'`
+      fi
+      if test -z "$aix_libpath"; then
+        aix_libpath="/usr/lib:/lib"
+      fi
+      rm -f conftest.c conftest
+      # End _LT_AC_SYS_LIBPATH_AIX.
+      if test "$aix_use_runtimelinking" = yes; then
+        hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+      else
+        if test "$host_cpu" = ia64; then
+          hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
+        else
+          hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+        fi
+      fi
+      ;;
+    amigaos*)
+      case "$host_cpu" in
+        powerpc)
+          ;;
+        m68k)
+          hardcode_libdir_flag_spec='-L$libdir'
+          hardcode_minus_L=yes
+          ;;
+      esac
+      ;;
+    bsdi[45]*)
+      ;;
+    cygwin* | mingw* | pw32* | cegcc*)
+      # When not using gcc, we currently assume that we are using
+      # Microsoft Visual C++.
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec=' '
+      libext=lib
+      ;;
+    darwin* | rhapsody*)
+      hardcode_direct=no
+      if { case $cc_basename in ifort*) true;; *) test "$GCC" = yes;; esac; }; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    dgux*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    freebsd2.[01]*)
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      ;;
+    freebsd* | dragonfly* | midnightbsd*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    hpux9*)
+      hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+      hardcode_libdir_separator=:
+      hardcode_direct=yes
+      # hardcode_minus_L: Not really in the search PATH,
+      # but as the default location of the library.
+      hardcode_minus_L=yes
+      ;;
+    hpux10*)
+      if test "$with_gnu_ld" = no; then
+        hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+        hardcode_libdir_separator=:
+        hardcode_direct=yes
+        # hardcode_minus_L: Not really in the search PATH,
+        # but as the default location of the library.
+        hardcode_minus_L=yes
+      fi
+      ;;
+    hpux11*)
+      if test "$with_gnu_ld" = no; then
+        hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+        hardcode_libdir_separator=:
+        case $host_cpu in
+          hppa*64*|ia64*)
+            hardcode_direct=no
+            ;;
+          *)
+            hardcode_direct=yes
+            # hardcode_minus_L: Not really in the search PATH,
+            # but as the default location of the library.
+            hardcode_minus_L=yes
+            ;;
+        esac
+      fi
+      ;;
+    irix5* | irix6* | nonstopux*)
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    netbsd*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    newsos6)
+      hardcode_direct=yes
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    *nto* | *qnx*)
+      ;;
+    openbsd*)
+      if test -f /usr/libexec/ld.so; then
+        hardcode_direct=yes
+        if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+          hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+        else
+          case "$host_os" in
+            openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
+              hardcode_libdir_flag_spec='-R$libdir'
+              ;;
+            *)
+              hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+              ;;
+          esac
+        fi
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    os2*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      ;;
+    osf3*)
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    osf4* | osf5*)
+      if test "$GCC" = yes; then
+        hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      else
+        # Both cc and cxx compiler support -rpath directly
+        hardcode_libdir_flag_spec='-rpath $libdir'
+      fi
+      hardcode_libdir_separator=:
+      ;;
+    solaris*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      ;;
+    sunos4*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      ;;
+    sysv4)
+      case $host_vendor in
+        sni)
+          hardcode_direct=yes # is this really true???
+          ;;
+        siemens)
+          hardcode_direct=no
+          ;;
+        motorola)
+          hardcode_direct=no #Motorola manual says yes, but my tests say they lie
+          ;;
+      esac
+      ;;
+    sysv4.3*)
+      ;;
+    sysv4*MP*)
+      if test -d /usr/nec; then
+        ld_shlibs=yes
+      fi
+      ;;
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*)
+      ;;
+    sysv5* | sco3.2v5* | sco5v6*)
+      hardcode_libdir_flag_spec='`test -z "$SCOABSPATH" && echo ${wl}-R,$libdir`'
+      hardcode_libdir_separator=':'
+      ;;
+    uts4*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    *)
+      ld_shlibs=no
+      ;;
+  esac
+fi
+
+# Check dynamic linker characteristics
+# Code taken from libtool.m4's _LT_SYS_DYNAMIC_LINKER.
+# Unlike libtool.m4, here we don't care about _all_ names of the library, but
+# only about the one the linker finds when passed -lNAME. This is the last
+# element of library_names_spec in libtool.m4, or possibly two of them if the
+# linker has special search rules.
+library_names_spec=      # the last element of library_names_spec in libtool.m4
+libname_spec='lib$name'
+case "$host_os" in
+  aix3*)
+    library_names_spec='$libname.a'
+    ;;
+  aix[4-9]*)
+    library_names_spec='$libname$shrext'
+    ;;
+  amigaos*)
+    case "$host_cpu" in
+      powerpc*)
+        library_names_spec='$libname$shrext' ;;
+      m68k)
+        library_names_spec='$libname.a' ;;
+    esac
+    ;;
+  beos*)
+    library_names_spec='$libname$shrext'
+    ;;
+  bsdi[45]*)
+    library_names_spec='$libname$shrext'
+    ;;
+  cygwin* | mingw* | pw32* | cegcc*)
+    shrext=.dll
+    library_names_spec='$libname.dll.a $libname.lib'
+    ;;
+  darwin* | rhapsody*)
+    shrext=.dylib
+    library_names_spec='$libname$shrext'
+    ;;
+  dgux*)
+    library_names_spec='$libname$shrext'
+    ;;
+  freebsd[23].*)
+    library_names_spec='$libname$shrext$versuffix'
+    ;;
+  freebsd* | dragonfly* | midnightbsd*)
+    library_names_spec='$libname$shrext'
+    ;;
+  gnu*)
+    library_names_spec='$libname$shrext'
+    ;;
+  haiku*)
+    library_names_spec='$libname$shrext'
+    ;;
+  hpux9* | hpux10* | hpux11*)
+    case $host_cpu in
+      ia64*)
+        shrext=.so
+        ;;
+      hppa*64*)
+        shrext=.sl
+        ;;
+      *)
+        shrext=.sl
+        ;;
+    esac
+    library_names_spec='$libname$shrext'
+    ;;
+  interix[3-9]*)
+    library_names_spec='$libname$shrext'
+    ;;
+  irix5* | irix6* | nonstopux*)
+    library_names_spec='$libname$shrext'
+    case "$host_os" in
+      irix5* | nonstopux*)
+        libsuff= shlibsuff=
+        ;;
+      *)
+        case $LD in
+          *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ") libsuff= shlibsuff= ;;
+          *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ") libsuff=32 shlibsuff=N32 ;;
+          *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ") libsuff=64 shlibsuff=64 ;;
+          *) libsuff= shlibsuff= ;;
+        esac
+        ;;
+    esac
+    ;;
+  linux*oldld* | linux*aout* | linux*coff*)
+    ;;
+  linux* | k*bsd*-gnu | kopensolaris*-gnu)
+    library_names_spec='$libname$shrext'
+    ;;
+  knetbsd*-gnu)
+    library_names_spec='$libname$shrext'
+    ;;
+  netbsd*)
+    library_names_spec='$libname$shrext'
+    ;;
+  newsos6)
+    library_names_spec='$libname$shrext'
+    ;;
+  *nto* | *qnx*)
+    library_names_spec='$libname$shrext'
+    ;;
+  openbsd*)
+    library_names_spec='$libname$shrext$versuffix'
+    ;;
+  os2*)
+    libname_spec='$name'
+    shrext=.dll
+    library_names_spec='$libname.a'
+    ;;
+  osf3* | osf4* | osf5*)
+    library_names_spec='$libname$shrext'
+    ;;
+  rdos*)
+    ;;
+  solaris*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sunos4*)
+    library_names_spec='$libname$shrext$versuffix'
+    ;;
+  sysv4 | sysv4.3*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sysv4*MP*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+    library_names_spec='$libname$shrext'
+    ;;
+  tpf*)
+    library_names_spec='$libname$shrext'
+    ;;
+  uts4*)
+    library_names_spec='$libname$shrext'
+    ;;
+esac
+
+sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
+escaped_wl=`echo "X$wl" | sed -e 's/^X//' -e "$sed_quote_subst"`
+shlibext=`echo "$shrext" | sed -e 's,^\.,,'`
+escaped_libname_spec=`echo "X$libname_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+escaped_library_names_spec=`echo "X$library_names_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+escaped_hardcode_libdir_flag_spec=`echo "X$hardcode_libdir_flag_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+
+LC_ALL=C sed -e 's/^\([a-zA-Z0-9_]*\)=/acl_cv_\1=/' <<EOF
+
+# How to pass a linker flag through the compiler.
+wl="$escaped_wl"
+
+# Static library suffix (normally "a").
+libext="$libext"
+
+# Shared library suffix (normally "so").
+shlibext="$shlibext"
+
+# Format of library name prefix.
+libname_spec="$escaped_libname_spec"
+
+# Library names that the linker finds when passed -lNAME.
+library_names_spec="$escaped_library_names_spec"
+
+# Flag to hardcode \$libdir into a binary during linking.
+# This must work even if \$libdir does not exist.
+hardcode_libdir_flag_spec="$escaped_hardcode_libdir_flag_spec"
+
+# Whether we need a single -rpath flag with a separated argument.
+hardcode_libdir_separator="$hardcode_libdir_separator"
+
+# Set to yes if using DIR/libNAME.so during linking hardcodes DIR into the
+# resulting binary.
+hardcode_direct="$hardcode_direct"
+
+# Set to yes if using the -LDIR flag during linking hardcodes DIR into the
+# resulting binary.
+hardcode_minus_L="$hardcode_minus_L"
+
+EOF
diff --git a/src/grep/build-aux/config.sub b/src/grep/build-aux/config.sub
new file mode 100755
index 0000000..d80c5d7
--- /dev/null
+++ b/src/grep/build-aux/config.sub
@@ -0,0 +1,1873 @@
+#! /bin/sh
+# Configuration validation subroutine script.
+#   Copyright 1992-2021 Free Software Foundation, Inc.
+
+# shellcheck disable=SC2006,SC2268 # see below for rationale
+
+timestamp='2021-07-03'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
+
+
+# Please send patches to <config-patches@gnu.org>.
+#
+# Configuration subroutine to validate and canonicalize a configuration type.
+# Supply the specified configuration type as an argument.
+# If it is invalid, we print an error message on stderr and exit with code 1.
+# Otherwise, we print the canonical config type on stdout and succeed.
+
+# You can get the latest version of this script from:
+# https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
+
+# This file is supposed to be the same for all GNU packages
+# and recognize all the CPU types, system types and aliases
+# that are meaningful with *any* GNU software.
+# Each package is responsible for reporting which valid configurations
+# it does not support.  The user should be able to distinguish
+# a failure to support a valid configuration from a meaningless
+# configuration.
+
+# The goal of this file is to map all the various variations of a given
+# machine specification into a single specification in the form:
+#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or in some cases, the newer four-part form:
+#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# It is wrong to echo any other type of specification.
+
+# The "shellcheck disable" line above the timestamp inhibits complaints
+# about features and limitations of the classic Bourne shell that were
+# superseded or lifted in POSIX.  However, this script identifies a wide
+# variety of pre-POSIX systems that do not have POSIX shells at all, and
+# even some reasonably current systems (Solaris 10 as case-in-point) still
+# have a pre-POSIX /bin/sh.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS
+
+Canonicalize a configuration name.
+
+Options:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.sub ($timestamp)
+
+Copyright 1992-2021 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+
+    *local*)
+       # First pass through any local machine types.
+       echo "$1"
+       exit ;;
+
+    * )
+       break ;;
+  esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+    exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+    exit 1;;
+esac
+
+# Split fields of configuration type
+# shellcheck disable=SC2162
+IFS="-" read field1 field2 field3 field4 <<EOF
+$1
+EOF
+
+# Separate into logical components for further validation
+case $1 in
+	*-*-*-*-*)
+		echo Invalid configuration \`"$1"\': more than four components >&2
+		exit 1
+		;;
+	*-*-*-*)
+		basic_machine=$field1-$field2
+		basic_os=$field3-$field4
+		;;
+	*-*-*)
+		# Ambiguous whether COMPANY is present, or skipped and KERNEL-OS is two
+		# parts
+		maybe_os=$field2-$field3
+		case $maybe_os in
+			nto-qnx* | linux-* | uclinux-uclibc* \
+			| uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* \
+			| netbsd*-eabi* | kopensolaris*-gnu* | cloudabi*-eabi* \
+			| storm-chaos* | os2-emx* | rtmk-nova*)
+				basic_machine=$field1
+				basic_os=$maybe_os
+				;;
+			android-linux)
+				basic_machine=$field1-unknown
+				basic_os=linux-android
+				;;
+			*)
+				basic_machine=$field1-$field2
+				basic_os=$field3
+				;;
+		esac
+		;;
+	*-*)
+		# A lone config we happen to match not fitting any pattern
+		case $field1-$field2 in
+			decstation-3100)
+				basic_machine=mips-dec
+				basic_os=
+				;;
+			*-*)
+				# Second component is usually, but not always the OS
+				case $field2 in
+					# Prevent following clause from handling this valid os
+					sun*os*)
+						basic_machine=$field1
+						basic_os=$field2
+						;;
+					# Manufacturers
+					dec* | mips* | sequent* | encore* | pc533* | sgi* | sony* \
+					| att* | 7300* | 3300* | delta* | motorola* | sun[234]* \
+					| unicom* | ibm* | next | hp | isi* | apollo | altos* \
+					| convergent* | ncr* | news | 32* | 3600* | 3100* \
+					| hitachi* | c[123]* | convex* | sun | crds | omron* | dg \
+					| ultra | tti* | harris | dolphin | highlevel | gould \
+					| cbm | ns | masscomp | apple | axis | knuth | cray \
+					| microblaze* | sim | cisco \
+					| oki | wec | wrs | winbond)
+						basic_machine=$field1-$field2
+						basic_os=
+						;;
+					*)
+						basic_machine=$field1
+						basic_os=$field2
+						;;
+				esac
+			;;
+		esac
+		;;
+	*)
+		# Convert single-component short-hands not valid as part of
+		# multi-component configurations.
+		case $field1 in
+			386bsd)
+				basic_machine=i386-pc
+				basic_os=bsd
+				;;
+			a29khif)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			adobe68k)
+				basic_machine=m68010-adobe
+				basic_os=scout
+				;;
+			alliant)
+				basic_machine=fx80-alliant
+				basic_os=
+				;;
+			altos | altos3068)
+				basic_machine=m68k-altos
+				basic_os=
+				;;
+			am29k)
+				basic_machine=a29k-none
+				basic_os=bsd
+				;;
+			amdahl)
+				basic_machine=580-amdahl
+				basic_os=sysv
+				;;
+			amiga)
+				basic_machine=m68k-unknown
+				basic_os=
+				;;
+			amigaos | amigados)
+				basic_machine=m68k-unknown
+				basic_os=amigaos
+				;;
+			amigaunix | amix)
+				basic_machine=m68k-unknown
+				basic_os=sysv4
+				;;
+			apollo68)
+				basic_machine=m68k-apollo
+				basic_os=sysv
+				;;
+			apollo68bsd)
+				basic_machine=m68k-apollo
+				basic_os=bsd
+				;;
+			aros)
+				basic_machine=i386-pc
+				basic_os=aros
+				;;
+			aux)
+				basic_machine=m68k-apple
+				basic_os=aux
+				;;
+			balance)
+				basic_machine=ns32k-sequent
+				basic_os=dynix
+				;;
+			blackfin)
+				basic_machine=bfin-unknown
+				basic_os=linux
+				;;
+			cegcc)
+				basic_machine=arm-unknown
+				basic_os=cegcc
+				;;
+			convex-c1)
+				basic_machine=c1-convex
+				basic_os=bsd
+				;;
+			convex-c2)
+				basic_machine=c2-convex
+				basic_os=bsd
+				;;
+			convex-c32)
+				basic_machine=c32-convex
+				basic_os=bsd
+				;;
+			convex-c34)
+				basic_machine=c34-convex
+				basic_os=bsd
+				;;
+			convex-c38)
+				basic_machine=c38-convex
+				basic_os=bsd
+				;;
+			cray)
+				basic_machine=j90-cray
+				basic_os=unicos
+				;;
+			crds | unos)
+				basic_machine=m68k-crds
+				basic_os=
+				;;
+			da30)
+				basic_machine=m68k-da30
+				basic_os=
+				;;
+			decstation | pmax | pmin | dec3100 | decstatn)
+				basic_machine=mips-dec
+				basic_os=
+				;;
+			delta88)
+				basic_machine=m88k-motorola
+				basic_os=sysv3
+				;;
+			dicos)
+				basic_machine=i686-pc
+				basic_os=dicos
+				;;
+			djgpp)
+				basic_machine=i586-pc
+				basic_os=msdosdjgpp
+				;;
+			ebmon29k)
+				basic_machine=a29k-amd
+				basic_os=ebmon
+				;;
+			es1800 | OSE68k | ose68k | ose | OSE)
+				basic_machine=m68k-ericsson
+				basic_os=ose
+				;;
+			gmicro)
+				basic_machine=tron-gmicro
+				basic_os=sysv
+				;;
+			go32)
+				basic_machine=i386-pc
+				basic_os=go32
+				;;
+			h8300hms)
+				basic_machine=h8300-hitachi
+				basic_os=hms
+				;;
+			h8300xray)
+				basic_machine=h8300-hitachi
+				basic_os=xray
+				;;
+			h8500hms)
+				basic_machine=h8500-hitachi
+				basic_os=hms
+				;;
+			harris)
+				basic_machine=m88k-harris
+				basic_os=sysv3
+				;;
+			hp300 | hp300hpux)
+				basic_machine=m68k-hp
+				basic_os=hpux
+				;;
+			hp300bsd)
+				basic_machine=m68k-hp
+				basic_os=bsd
+				;;
+			hppaosf)
+				basic_machine=hppa1.1-hp
+				basic_os=osf
+				;;
+			hppro)
+				basic_machine=hppa1.1-hp
+				basic_os=proelf
+				;;
+			i386mach)
+				basic_machine=i386-mach
+				basic_os=mach
+				;;
+			isi68 | isi)
+				basic_machine=m68k-isi
+				basic_os=sysv
+				;;
+			m68knommu)
+				basic_machine=m68k-unknown
+				basic_os=linux
+				;;
+			magnum | m3230)
+				basic_machine=mips-mips
+				basic_os=sysv
+				;;
+			merlin)
+				basic_machine=ns32k-utek
+				basic_os=sysv
+				;;
+			mingw64)
+				basic_machine=x86_64-pc
+				basic_os=mingw64
+				;;
+			mingw32)
+				basic_machine=i686-pc
+				basic_os=mingw32
+				;;
+			mingw32ce)
+				basic_machine=arm-unknown
+				basic_os=mingw32ce
+				;;
+			monitor)
+				basic_machine=m68k-rom68k
+				basic_os=coff
+				;;
+			morphos)
+				basic_machine=powerpc-unknown
+				basic_os=morphos
+				;;
+			moxiebox)
+				basic_machine=moxie-unknown
+				basic_os=moxiebox
+				;;
+			msdos)
+				basic_machine=i386-pc
+				basic_os=msdos
+				;;
+			msys)
+				basic_machine=i686-pc
+				basic_os=msys
+				;;
+			mvs)
+				basic_machine=i370-ibm
+				basic_os=mvs
+				;;
+			nacl)
+				basic_machine=le32-unknown
+				basic_os=nacl
+				;;
+			ncr3000)
+				basic_machine=i486-ncr
+				basic_os=sysv4
+				;;
+			netbsd386)
+				basic_machine=i386-pc
+				basic_os=netbsd
+				;;
+			netwinder)
+				basic_machine=armv4l-rebel
+				basic_os=linux
+				;;
+			news | news700 | news800 | news900)
+				basic_machine=m68k-sony
+				basic_os=newsos
+				;;
+			news1000)
+				basic_machine=m68030-sony
+				basic_os=newsos
+				;;
+			necv70)
+				basic_machine=v70-nec
+				basic_os=sysv
+				;;
+			nh3000)
+				basic_machine=m68k-harris
+				basic_os=cxux
+				;;
+			nh[45]000)
+				basic_machine=m88k-harris
+				basic_os=cxux
+				;;
+			nindy960)
+				basic_machine=i960-intel
+				basic_os=nindy
+				;;
+			mon960)
+				basic_machine=i960-intel
+				basic_os=mon960
+				;;
+			nonstopux)
+				basic_machine=mips-compaq
+				basic_os=nonstopux
+				;;
+			os400)
+				basic_machine=powerpc-ibm
+				basic_os=os400
+				;;
+			OSE68000 | ose68000)
+				basic_machine=m68000-ericsson
+				basic_os=ose
+				;;
+			os68k)
+				basic_machine=m68k-none
+				basic_os=os68k
+				;;
+			paragon)
+				basic_machine=i860-intel
+				basic_os=osf
+				;;
+			parisc)
+				basic_machine=hppa-unknown
+				basic_os=linux
+				;;
+			psp)
+				basic_machine=mipsallegrexel-sony
+				basic_os=psp
+				;;
+			pw32)
+				basic_machine=i586-unknown
+				basic_os=pw32
+				;;
+			rdos | rdos64)
+				basic_machine=x86_64-pc
+				basic_os=rdos
+				;;
+			rdos32)
+				basic_machine=i386-pc
+				basic_os=rdos
+				;;
+			rom68k)
+				basic_machine=m68k-rom68k
+				basic_os=coff
+				;;
+			sa29200)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			sei)
+				basic_machine=mips-sei
+				basic_os=seiux
+				;;
+			sequent)
+				basic_machine=i386-sequent
+				basic_os=
+				;;
+			sps7)
+				basic_machine=m68k-bull
+				basic_os=sysv2
+				;;
+			st2000)
+				basic_machine=m68k-tandem
+				basic_os=
+				;;
+			stratus)
+				basic_machine=i860-stratus
+				basic_os=sysv4
+				;;
+			sun2)
+				basic_machine=m68000-sun
+				basic_os=
+				;;
+			sun2os3)
+				basic_machine=m68000-sun
+				basic_os=sunos3
+				;;
+			sun2os4)
+				basic_machine=m68000-sun
+				basic_os=sunos4
+				;;
+			sun3)
+				basic_machine=m68k-sun
+				basic_os=
+				;;
+			sun3os3)
+				basic_machine=m68k-sun
+				basic_os=sunos3
+				;;
+			sun3os4)
+				basic_machine=m68k-sun
+				basic_os=sunos4
+				;;
+			sun4)
+				basic_machine=sparc-sun
+				basic_os=
+				;;
+			sun4os3)
+				basic_machine=sparc-sun
+				basic_os=sunos3
+				;;
+			sun4os4)
+				basic_machine=sparc-sun
+				basic_os=sunos4
+				;;
+			sun4sol2)
+				basic_machine=sparc-sun
+				basic_os=solaris2
+				;;
+			sun386 | sun386i | roadrunner)
+				basic_machine=i386-sun
+				basic_os=
+				;;
+			sv1)
+				basic_machine=sv1-cray
+				basic_os=unicos
+				;;
+			symmetry)
+				basic_machine=i386-sequent
+				basic_os=dynix
+				;;
+			t3e)
+				basic_machine=alphaev5-cray
+				basic_os=unicos
+				;;
+			t90)
+				basic_machine=t90-cray
+				basic_os=unicos
+				;;
+			toad1)
+				basic_machine=pdp10-xkl
+				basic_os=tops20
+				;;
+			tpf)
+				basic_machine=s390x-ibm
+				basic_os=tpf
+				;;
+			udi29k)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			ultra3)
+				basic_machine=a29k-nyu
+				basic_os=sym1
+				;;
+			v810 | necv810)
+				basic_machine=v810-nec
+				basic_os=none
+				;;
+			vaxv)
+				basic_machine=vax-dec
+				basic_os=sysv
+				;;
+			vms)
+				basic_machine=vax-dec
+				basic_os=vms
+				;;
+			vsta)
+				basic_machine=i386-pc
+				basic_os=vsta
+				;;
+			vxworks960)
+				basic_machine=i960-wrs
+				basic_os=vxworks
+				;;
+			vxworks68)
+				basic_machine=m68k-wrs
+				basic_os=vxworks
+				;;
+			vxworks29k)
+				basic_machine=a29k-wrs
+				basic_os=vxworks
+				;;
+			xbox)
+				basic_machine=i686-pc
+				basic_os=mingw32
+				;;
+			ymp)
+				basic_machine=ymp-cray
+				basic_os=unicos
+				;;
+			*)
+				basic_machine=$1
+				basic_os=
+				;;
+		esac
+		;;
+esac
+
+# Decode 1-component or ad-hoc basic machines
+case $basic_machine in
+	# Here we handle the default manufacturer of certain CPU types.  It is in
+	# some cases the only manufacturer, in others, it is the most popular.
+	w89k)
+		cpu=hppa1.1
+		vendor=winbond
+		;;
+	op50n)
+		cpu=hppa1.1
+		vendor=oki
+		;;
+	op60c)
+		cpu=hppa1.1
+		vendor=oki
+		;;
+	ibm*)
+		cpu=i370
+		vendor=ibm
+		;;
+	orion105)
+		cpu=clipper
+		vendor=highlevel
+		;;
+	mac | mpw | mac-mpw)
+		cpu=m68k
+		vendor=apple
+		;;
+	pmac | pmac-mpw)
+		cpu=powerpc
+		vendor=apple
+		;;
+
+	# Recognize the various machine names and aliases which stand
+	# for a CPU type and a company and sometimes even an OS.
+	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+		cpu=m68000
+		vendor=att
+		;;
+	3b*)
+		cpu=we32k
+		vendor=att
+		;;
+	bluegene*)
+		cpu=powerpc
+		vendor=ibm
+		basic_os=cnk
+		;;
+	decsystem10* | dec10*)
+		cpu=pdp10
+		vendor=dec
+		basic_os=tops10
+		;;
+	decsystem20* | dec20*)
+		cpu=pdp10
+		vendor=dec
+		basic_os=tops20
+		;;
+	delta | 3300 | motorola-3300 | motorola-delta \
+	      | 3300-motorola | delta-motorola)
+		cpu=m68k
+		vendor=motorola
+		;;
+	dpx2*)
+		cpu=m68k
+		vendor=bull
+		basic_os=sysv3
+		;;
+	encore | umax | mmax)
+		cpu=ns32k
+		vendor=encore
+		;;
+	elxsi)
+		cpu=elxsi
+		vendor=elxsi
+		basic_os=${basic_os:-bsd}
+		;;
+	fx2800)
+		cpu=i860
+		vendor=alliant
+		;;
+	genix)
+		cpu=ns32k
+		vendor=ns
+		;;
+	h3050r* | hiux*)
+		cpu=hppa1.1
+		vendor=hitachi
+		basic_os=hiuxwe2
+		;;
+	hp3k9[0-9][0-9] | hp9[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	hp9k2[0-9][0-9] | hp9k31[0-9])
+		cpu=m68000
+		vendor=hp
+		;;
+	hp9k3[2-9][0-9])
+		cpu=m68k
+		vendor=hp
+		;;
+	hp9k6[0-9][0-9] | hp6[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	hp9k7[0-79][0-9] | hp7[0-79][0-9])
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k78[0-9] | hp78[0-9])
+		# FIXME: really hppa2.0-hp
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
+		# FIXME: really hppa2.0-hp
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[0-9][13679] | hp8[0-9][13679])
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[0-9][0-9] | hp8[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	i*86v32)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=sysv32
+		;;
+	i*86v4*)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=sysv4
+		;;
+	i*86v)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=sysv
+		;;
+	i*86sol2)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=solaris2
+		;;
+	j90 | j90-cray)
+		cpu=j90
+		vendor=cray
+		basic_os=${basic_os:-unicos}
+		;;
+	iris | iris4d)
+		cpu=mips
+		vendor=sgi
+		case $basic_os in
+		    irix*)
+			;;
+		    *)
+			basic_os=irix4
+			;;
+		esac
+		;;
+	miniframe)
+		cpu=m68000
+		vendor=convergent
+		;;
+	*mint | mint[0-9]* | *MiNT | *MiNT[0-9]*)
+		cpu=m68k
+		vendor=atari
+		basic_os=mint
+		;;
+	news-3600 | risc-news)
+		cpu=mips
+		vendor=sony
+		basic_os=newsos
+		;;
+	next | m*-next)
+		cpu=m68k
+		vendor=next
+		case $basic_os in
+		    openstep*)
+		        ;;
+		    nextstep*)
+			;;
+		    ns2*)
+		      basic_os=nextstep2
+			;;
+		    *)
+		      basic_os=nextstep3
+			;;
+		esac
+		;;
+	np1)
+		cpu=np1
+		vendor=gould
+		;;
+	op50n-* | op60c-*)
+		cpu=hppa1.1
+		vendor=oki
+		basic_os=proelf
+		;;
+	pa-hitachi)
+		cpu=hppa1.1
+		vendor=hitachi
+		basic_os=hiuxwe2
+		;;
+	pbd)
+		cpu=sparc
+		vendor=tti
+		;;
+	pbb)
+		cpu=m68k
+		vendor=tti
+		;;
+	pc532)
+		cpu=ns32k
+		vendor=pc532
+		;;
+	pn)
+		cpu=pn
+		vendor=gould
+		;;
+	power)
+		cpu=power
+		vendor=ibm
+		;;
+	ps2)
+		cpu=i386
+		vendor=ibm
+		;;
+	rm[46]00)
+		cpu=mips
+		vendor=siemens
+		;;
+	rtpc | rtpc-*)
+		cpu=romp
+		vendor=ibm
+		;;
+	sde)
+		cpu=mipsisa32
+		vendor=sde
+		basic_os=${basic_os:-elf}
+		;;
+	simso-wrs)
+		cpu=sparclite
+		vendor=wrs
+		basic_os=vxworks
+		;;
+	tower | tower-32)
+		cpu=m68k
+		vendor=ncr
+		;;
+	vpp*|vx|vx-*)
+		cpu=f301
+		vendor=fujitsu
+		;;
+	w65)
+		cpu=w65
+		vendor=wdc
+		;;
+	w89k-*)
+		cpu=hppa1.1
+		vendor=winbond
+		basic_os=proelf
+		;;
+	none)
+		cpu=none
+		vendor=none
+		;;
+	leon|leon[3-9])
+		cpu=sparc
+		vendor=$basic_machine
+		;;
+	leon-*|leon[3-9]-*)
+		cpu=sparc
+		vendor=`echo "$basic_machine" | sed 's/-.*//'`
+		;;
+
+	*-*)
+		# shellcheck disable=SC2162
+		IFS="-" read cpu vendor <<EOF
+$basic_machine
+EOF
+		;;
+	# We use `pc' rather than `unknown'
+	# because (1) that's what they normally are, and
+	# (2) the word "unknown" tends to confuse beginning users.
+	i*86 | x86_64)
+		cpu=$basic_machine
+		vendor=pc
+		;;
+	# These rules are duplicated from below for sake of the special case above;
+	# i.e. things that normalized to x86 arches should also default to "pc"
+	pc98)
+		cpu=i386
+		vendor=pc
+		;;
+	x64 | amd64)
+		cpu=x86_64
+		vendor=pc
+		;;
+	# Recognize the basic CPU types without company name.
+	*)
+		cpu=$basic_machine
+		vendor=unknown
+		;;
+esac
+
+unset -v basic_machine
+
+# Decode basic machines in the full and proper CPU-Company form.
+case $cpu-$vendor in
+	# Here we handle the default manufacturer of certain CPU types in canonical form. It is in
+	# some cases the only manufacturer, in others, it is the most popular.
+	craynv-unknown)
+		vendor=cray
+		basic_os=${basic_os:-unicosmp}
+		;;
+	c90-unknown | c90-cray)
+		vendor=cray
+		basic_os=${Basic_os:-unicos}
+		;;
+	fx80-unknown)
+		vendor=alliant
+		;;
+	romp-unknown)
+		vendor=ibm
+		;;
+	mmix-unknown)
+		vendor=knuth
+		;;
+	microblaze-unknown | microblazeel-unknown)
+		vendor=xilinx
+		;;
+	rs6000-unknown)
+		vendor=ibm
+		;;
+	vax-unknown)
+		vendor=dec
+		;;
+	pdp11-unknown)
+		vendor=dec
+		;;
+	we32k-unknown)
+		vendor=att
+		;;
+	cydra-unknown)
+		vendor=cydrome
+		;;
+	i370-ibm*)
+		vendor=ibm
+		;;
+	orion-unknown)
+		vendor=highlevel
+		;;
+	xps-unknown | xps100-unknown)
+		cpu=xps100
+		vendor=honeywell
+		;;
+
+	# Here we normalize CPU types with a missing or matching vendor
+	dpx20-unknown | dpx20-bull)
+		cpu=rs6000
+		vendor=bull
+		basic_os=${basic_os:-bosx}
+		;;
+
+	# Here we normalize CPU types irrespective of the vendor
+	amd64-*)
+		cpu=x86_64
+		;;
+	blackfin-*)
+		cpu=bfin
+		basic_os=linux
+		;;
+	c54x-*)
+		cpu=tic54x
+		;;
+	c55x-*)
+		cpu=tic55x
+		;;
+	c6x-*)
+		cpu=tic6x
+		;;
+	e500v[12]-*)
+		cpu=powerpc
+		basic_os=${basic_os}"spe"
+		;;
+	mips3*-*)
+		cpu=mips64
+		;;
+	ms1-*)
+		cpu=mt
+		;;
+	m68knommu-*)
+		cpu=m68k
+		basic_os=linux
+		;;
+	m9s12z-* | m68hcs12z-* | hcs12z-* | s12z-*)
+		cpu=s12z
+		;;
+	openrisc-*)
+		cpu=or32
+		;;
+	parisc-*)
+		cpu=hppa
+		basic_os=linux
+		;;
+	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+		cpu=i586
+		;;
+	pentiumpro-* | p6-* | 6x86-* | athlon-* | athalon_*-*)
+		cpu=i686
+		;;
+	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+		cpu=i686
+		;;
+	pentium4-*)
+		cpu=i786
+		;;
+	pc98-*)
+		cpu=i386
+		;;
+	ppc-* | ppcbe-*)
+		cpu=powerpc
+		;;
+	ppcle-* | powerpclittle-*)
+		cpu=powerpcle
+		;;
+	ppc64-*)
+		cpu=powerpc64
+		;;
+	ppc64le-* | powerpc64little-*)
+		cpu=powerpc64le
+		;;
+	sb1-*)
+		cpu=mipsisa64sb1
+		;;
+	sb1el-*)
+		cpu=mipsisa64sb1el
+		;;
+	sh5e[lb]-*)
+		cpu=`echo "$cpu" | sed 's/^\(sh.\)e\(.\)$/\1\2e/'`
+		;;
+	spur-*)
+		cpu=spur
+		;;
+	strongarm-* | thumb-*)
+		cpu=arm
+		;;
+	tx39-*)
+		cpu=mipstx39
+		;;
+	tx39el-*)
+		cpu=mipstx39el
+		;;
+	x64-*)
+		cpu=x86_64
+		;;
+	xscale-* | xscalee[bl]-*)
+		cpu=`echo "$cpu" | sed 's/^xscale/arm/'`
+		;;
+	arm64-*)
+		cpu=aarch64
+		;;
+
+	# Recognize the canonical CPU Types that limit and/or modify the
+	# company names they are paired with.
+	cr16-*)
+		basic_os=${basic_os:-elf}
+		;;
+	crisv32-* | etraxfs*-*)
+		cpu=crisv32
+		vendor=axis
+		;;
+	cris-* | etrax*-*)
+		cpu=cris
+		vendor=axis
+		;;
+	crx-*)
+		basic_os=${basic_os:-elf}
+		;;
+	neo-tandem)
+		cpu=neo
+		vendor=tandem
+		;;
+	nse-tandem)
+		cpu=nse
+		vendor=tandem
+		;;
+	nsr-tandem)
+		cpu=nsr
+		vendor=tandem
+		;;
+	nsv-tandem)
+		cpu=nsv
+		vendor=tandem
+		;;
+	nsx-tandem)
+		cpu=nsx
+		vendor=tandem
+		;;
+	mipsallegrexel-sony)
+		cpu=mipsallegrexel
+		vendor=sony
+		;;
+	tile*-*)
+		basic_os=${basic_os:-linux-gnu}
+		;;
+
+	*)
+		# Recognize the canonical CPU types that are allowed with any
+		# company name.
+		case $cpu in
+			1750a | 580 \
+			| a29k \
+			| aarch64 | aarch64_be \
+			| abacus \
+			| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] \
+			| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] \
+			| alphapca5[67] | alpha64pca5[67] \
+			| am33_2.0 \
+			| amdgcn \
+			| arc | arceb | arc32 | arc64 \
+			| arm | arm[lb]e | arme[lb] | armv* \
+			| avr | avr32 \
+			| asmjs \
+			| ba \
+			| be32 | be64 \
+			| bfin | bpf | bs2000 \
+			| c[123]* | c30 | [cjt]90 | c4x \
+			| c8051 | clipper | craynv | csky | cydra \
+			| d10v | d30v | dlx | dsp16xx \
+			| e2k | elxsi | epiphany \
+			| f30[01] | f700 | fido | fr30 | frv | ft32 | fx80 \
+			| h8300 | h8500 \
+			| hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+			| hexagon \
+			| i370 | i*86 | i860 | i960 | ia16 | ia64 \
+			| ip2k | iq2000 \
+			| k1om \
+			| le32 | le64 \
+			| lm32 \
+			| loongarch32 | loongarch64 | loongarchx32 \
+			| m32c | m32r | m32rle \
+			| m5200 | m68000 | m680[012346]0 | m68360 | m683?2 | m68k \
+			| m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x \
+			| m88110 | m88k | maxq | mb | mcore | mep | metag \
+			| microblaze | microblazeel \
+			| mips | mipsbe | mipseb | mipsel | mipsle \
+			| mips16 \
+			| mips64 | mips64eb | mips64el \
+			| mips64octeon | mips64octeonel \
+			| mips64orion | mips64orionel \
+			| mips64r5900 | mips64r5900el \
+			| mips64vr | mips64vrel \
+			| mips64vr4100 | mips64vr4100el \
+			| mips64vr4300 | mips64vr4300el \
+			| mips64vr5000 | mips64vr5000el \
+			| mips64vr5900 | mips64vr5900el \
+			| mipsisa32 | mipsisa32el \
+			| mipsisa32r2 | mipsisa32r2el \
+			| mipsisa32r3 | mipsisa32r3el \
+			| mipsisa32r5 | mipsisa32r5el \
+			| mipsisa32r6 | mipsisa32r6el \
+			| mipsisa64 | mipsisa64el \
+			| mipsisa64r2 | mipsisa64r2el \
+			| mipsisa64r3 | mipsisa64r3el \
+			| mipsisa64r5 | mipsisa64r5el \
+			| mipsisa64r6 | mipsisa64r6el \
+			| mipsisa64sb1 | mipsisa64sb1el \
+			| mipsisa64sr71k | mipsisa64sr71kel \
+			| mipsr5900 | mipsr5900el \
+			| mipstx39 | mipstx39el \
+			| mmix \
+			| mn10200 | mn10300 \
+			| moxie \
+			| mt \
+			| msp430 \
+			| nds32 | nds32le | nds32be \
+			| nfp \
+			| nios | nios2 | nios2eb | nios2el \
+			| none | np1 | ns16k | ns32k | nvptx \
+			| open8 \
+			| or1k* \
+			| or32 \
+			| orion \
+			| picochip \
+			| pdp10 | pdp11 | pj | pjl | pn | power \
+			| powerpc | powerpc64 | powerpc64le | powerpcle | powerpcspe \
+			| pru \
+			| pyramid \
+			| riscv | riscv32 | riscv32be | riscv64 | riscv64be \
+			| rl78 | romp | rs6000 | rx \
+			| s390 | s390x \
+			| score \
+			| sh | shl \
+			| sh[1234] | sh[24]a | sh[24]ae[lb] | sh[23]e | she[lb] | sh[lb]e \
+			| sh[1234]e[lb] |  sh[12345][lb]e | sh[23]ele | sh64 | sh64le \
+			| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet \
+			| sparclite \
+			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
+			| spu \
+			| tahoe \
+			| thumbv7* \
+			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
+			| tron \
+			| ubicom32 \
+			| v70 | v850 | v850e | v850e1 | v850es | v850e2 | v850e2v3 \
+			| vax \
+			| visium \
+			| w65 \
+			| wasm32 | wasm64 \
+			| we32k \
+			| x86 | x86_64 | xc16x | xgate | xps100 \
+			| xstormy16 | xtensa* \
+			| ymp \
+			| z8k | z80)
+				;;
+
+			*)
+				echo Invalid configuration \`"$1"\': machine \`"$cpu-$vendor"\' not recognized 1>&2
+				exit 1
+				;;
+		esac
+		;;
+esac
+
+# Here we canonicalize certain aliases for manufacturers.
+case $vendor in
+	digital*)
+		vendor=dec
+		;;
+	commodore*)
+		vendor=cbm
+		;;
+	*)
+		;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if test x$basic_os != x
+then
+
+# First recognize some ad-hoc caes, or perhaps split kernel-os, or else just
+# set os.
+case $basic_os in
+	gnu/linux*)
+		kernel=linux
+		os=`echo "$basic_os" | sed -e 's|gnu/linux|gnu|'`
+		;;
+	os2-emx)
+		kernel=os2
+		os=`echo "$basic_os" | sed -e 's|os2-emx|emx|'`
+		;;
+	nto-qnx*)
+		kernel=nto
+		os=`echo "$basic_os" | sed -e 's|nto-qnx|qnx|'`
+		;;
+	*-*)
+		# shellcheck disable=SC2162
+		IFS="-" read kernel os <<EOF
+$basic_os
+EOF
+		;;
+	# Default OS when just kernel was specified
+	nto*)
+		kernel=nto
+		os=`echo "$basic_os" | sed -e 's|nto|qnx|'`
+		;;
+	linux*)
+		kernel=linux
+		os=`echo "$basic_os" | sed -e 's|linux|gnu|'`
+		;;
+	*)
+		kernel=
+		os=$basic_os
+		;;
+esac
+
+# Now, normalize the OS (knowing we just have one component, it's not a kernel,
+# etc.)
+case $os in
+	# First match some system type aliases that might get confused
+	# with valid system types.
+	# solaris* is a basic system type, with this one exception.
+	auroraux)
+		os=auroraux
+		;;
+	bluegene*)
+		os=cnk
+		;;
+	solaris1 | solaris1.*)
+		os=`echo "$os" | sed -e 's|solaris1|sunos4|'`
+		;;
+	solaris)
+		os=solaris2
+		;;
+	unixware*)
+		os=sysv4.2uw
+		;;
+	# es1800 is here to avoid being matched by es* (a different OS)
+	es1800*)
+		os=ose
+		;;
+	# Some version numbers need modification
+	chorusos*)
+		os=chorusos
+		;;
+	isc)
+		os=isc2.2
+		;;
+	sco6)
+		os=sco5v6
+		;;
+	sco5)
+		os=sco3.2v5
+		;;
+	sco4)
+		os=sco3.2v4
+		;;
+	sco3.2.[4-9]*)
+		os=`echo "$os" | sed -e 's/sco3.2./sco3.2v/'`
+		;;
+	sco*v* | scout)
+		# Don't match below
+		;;
+	sco*)
+		os=sco3.2v2
+		;;
+	psos*)
+		os=psos
+		;;
+	qnx*)
+		os=qnx
+		;;
+	hiux*)
+		os=hiuxwe2
+		;;
+	lynx*178)
+		os=lynxos178
+		;;
+	lynx*5)
+		os=lynxos5
+		;;
+	lynxos*)
+		# don't get caught up in next wildcard
+		;;
+	lynx*)
+		os=lynxos
+		;;
+	mac[0-9]*)
+		os=`echo "$os" | sed -e 's|mac|macos|'`
+		;;
+	opened*)
+		os=openedition
+		;;
+	os400*)
+		os=os400
+		;;
+	sunos5*)
+		os=`echo "$os" | sed -e 's|sunos5|solaris2|'`
+		;;
+	sunos6*)
+		os=`echo "$os" | sed -e 's|sunos6|solaris3|'`
+		;;
+	wince*)
+		os=wince
+		;;
+	utek*)
+		os=bsd
+		;;
+	dynix*)
+		os=bsd
+		;;
+	acis*)
+		os=aos
+		;;
+	atheos*)
+		os=atheos
+		;;
+	syllable*)
+		os=syllable
+		;;
+	386bsd)
+		os=bsd
+		;;
+	ctix* | uts*)
+		os=sysv
+		;;
+	nova*)
+		os=rtmk-nova
+		;;
+	ns2)
+		os=nextstep2
+		;;
+	# Preserve the version number of sinix5.
+	sinix5.*)
+		os=`echo "$os" | sed -e 's|sinix|sysv|'`
+		;;
+	sinix*)
+		os=sysv4
+		;;
+	tpf*)
+		os=tpf
+		;;
+	triton*)
+		os=sysv3
+		;;
+	oss*)
+		os=sysv3
+		;;
+	svr4*)
+		os=sysv4
+		;;
+	svr3)
+		os=sysv3
+		;;
+	sysvr4)
+		os=sysv4
+		;;
+	ose*)
+		os=ose
+		;;
+	*mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
+		os=mint
+		;;
+	dicos*)
+		os=dicos
+		;;
+	pikeos*)
+		# Until real need of OS specific support for
+		# particular features comes up, bare metal
+		# configurations are quite functional.
+		case $cpu in
+		    arm*)
+			os=eabi
+			;;
+		    *)
+			os=elf
+			;;
+		esac
+		;;
+	*)
+		# No normalization, but not necessarily accepted, that comes below.
+		;;
+esac
+
+else
+
+# Here we handle the default operating systems that come with various machines.
+# The value should be what the vendor currently ships out the door with their
+# machine or put another way, the most popular os provided with the machine.
+
+# Note that if you're going to try to match "-MANUFACTURER" here (say,
+# "-sun"), then you have to tell the case statement up towards the top
+# that MANUFACTURER isn't an operating system.  Otherwise, code above
+# will signal an error saying that MANUFACTURER isn't an operating
+# system, and we'll never get to this point.
+
+kernel=
+case $cpu-$vendor in
+	score-*)
+		os=elf
+		;;
+	spu-*)
+		os=elf
+		;;
+	*-acorn)
+		os=riscix1.2
+		;;
+	arm*-rebel)
+		kernel=linux
+		os=gnu
+		;;
+	arm*-semi)
+		os=aout
+		;;
+	c4x-* | tic4x-*)
+		os=coff
+		;;
+	c8051-*)
+		os=elf
+		;;
+	clipper-intergraph)
+		os=clix
+		;;
+	hexagon-*)
+		os=elf
+		;;
+	tic54x-*)
+		os=coff
+		;;
+	tic55x-*)
+		os=coff
+		;;
+	tic6x-*)
+		os=coff
+		;;
+	# This must come before the *-dec entry.
+	pdp10-*)
+		os=tops20
+		;;
+	pdp11-*)
+		os=none
+		;;
+	*-dec | vax-*)
+		os=ultrix4.2
+		;;
+	m68*-apollo)
+		os=domain
+		;;
+	i386-sun)
+		os=sunos4.0.2
+		;;
+	m68000-sun)
+		os=sunos3
+		;;
+	m68*-cisco)
+		os=aout
+		;;
+	mep-*)
+		os=elf
+		;;
+	mips*-cisco)
+		os=elf
+		;;
+	mips*-*)
+		os=elf
+		;;
+	or32-*)
+		os=coff
+		;;
+	*-tti)	# must be before sparc entry or we get the wrong os.
+		os=sysv3
+		;;
+	sparc-* | *-sun)
+		os=sunos4.1.1
+		;;
+	pru-*)
+		os=elf
+		;;
+	*-be)
+		os=beos
+		;;
+	*-ibm)
+		os=aix
+		;;
+	*-knuth)
+		os=mmixware
+		;;
+	*-wec)
+		os=proelf
+		;;
+	*-winbond)
+		os=proelf
+		;;
+	*-oki)
+		os=proelf
+		;;
+	*-hp)
+		os=hpux
+		;;
+	*-hitachi)
+		os=hiux
+		;;
+	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
+		os=sysv
+		;;
+	*-cbm)
+		os=amigaos
+		;;
+	*-dg)
+		os=dgux
+		;;
+	*-dolphin)
+		os=sysv3
+		;;
+	m68k-ccur)
+		os=rtu
+		;;
+	m88k-omron*)
+		os=luna
+		;;
+	*-next)
+		os=nextstep
+		;;
+	*-sequent)
+		os=ptx
+		;;
+	*-crds)
+		os=unos
+		;;
+	*-ns)
+		os=genix
+		;;
+	i370-*)
+		os=mvs
+		;;
+	*-gould)
+		os=sysv
+		;;
+	*-highlevel)
+		os=bsd
+		;;
+	*-encore)
+		os=bsd
+		;;
+	*-sgi)
+		os=irix
+		;;
+	*-siemens)
+		os=sysv4
+		;;
+	*-masscomp)
+		os=rtu
+		;;
+	f30[01]-fujitsu | f700-fujitsu)
+		os=uxpv
+		;;
+	*-rom68k)
+		os=coff
+		;;
+	*-*bug)
+		os=coff
+		;;
+	*-apple)
+		os=macos
+		;;
+	*-atari*)
+		os=mint
+		;;
+	*-wrs)
+		os=vxworks
+		;;
+	*)
+		os=none
+		;;
+esac
+
+fi
+
+# Now, validate our (potentially fixed-up) OS.
+case $os in
+	# Sometimes we do "kernel-libc", so those need to count as OSes.
+	musl* | newlib* | uclibc*)
+		;;
+	# Likewise for "kernel-abi"
+	eabi* | gnueabi*)
+		;;
+	# VxWorks passes extra cpu info in the 4th filed.
+	simlinux | simwindows | spe)
+		;;
+	# Now accept the basic system types.
+	# The portable systems comes first.
+	# Each alternative MUST end in a * to match a version number.
+	gnu* | android* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
+	     | *vms* | esix* | aix* | cnk* | sunos | sunos[34]* \
+	     | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
+	     | sym* |  plan9* | psp* | sim* | xray* | os68k* | v88r* \
+	     | hiux* | abug | nacl* | netware* | windows* \
+	     | os9* | macos* | osx* | ios* \
+	     | mpw* | magic* | mmixware* | mon960* | lnews* \
+	     | amigaos* | amigados* | msdos* | newsos* | unicos* | aof* \
+	     | aos* | aros* | cloudabi* | sortix* | twizzler* \
+	     | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \
+	     | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \
+	     | mirbsd* | netbsd* | dicos* | openedition* | ose* \
+	     | bitrig* | openbsd* | secbsd* | solidbsd* | libertybsd* | os108* \
+	     | ekkobsd* | freebsd* | riscix* | lynxos* | os400* \
+	     | bosx* | nextstep* | cxux* | aout* | elf* | oabi* \
+	     | ptx* | coff* | ecoff* | winnt* | domain* | vsta* \
+	     | udi* | lites* | ieee* | go32* | aux* | hcos* \
+	     | chorusrdb* | cegcc* | glidix* | serenity* \
+	     | cygwin* | msys* | pe* | moss* | proelf* | rtems* \
+	     | midipix* | mingw32* | mingw64* | mint* \
+	     | uxpv* | beos* | mpeix* | udk* | moxiebox* \
+	     | interix* | uwin* | mks* | rhapsody* | darwin* \
+	     | openstep* | oskit* | conix* | pw32* | nonstopux* \
+	     | storm-chaos* | tops10* | tenex* | tops20* | its* \
+	     | os2* | vos* | palmos* | uclinux* | nucleus* | morphos* \
+	     | scout* | superux* | sysv* | rtmk* | tpf* | windiss* \
+	     | powermax* | dnix* | nx6 | nx7 | sei* | dragonfly* \
+	     | skyos* | haiku* | rdos* | toppers* | drops* | es* \
+	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
+	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
+	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx*)
+		;;
+	# This one is extra strict with allowed versions
+	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
+		# Don't forget version if it is 3.2v4 or newer.
+		;;
+	none)
+		;;
+	*)
+		echo Invalid configuration \`"$1"\': OS \`"$os"\' not recognized 1>&2
+		exit 1
+		;;
+esac
+
+# As a final step for OS-related things, validate the OS-kernel combination
+# (given a valid OS), if there is a kernel.
+case $kernel-$os in
+	linux-gnu* | linux-dietlibc* | linux-android* | linux-newlib* | linux-musl* | linux-uclibc* )
+		;;
+	uclinux-uclibc* )
+		;;
+	-dietlibc* | -newlib* | -musl* | -uclibc* )
+		# These are just libc implementations, not actual OSes, and thus
+		# require a kernel.
+		echo "Invalid configuration \`$1': libc \`$os' needs explicit kernel." 1>&2
+		exit 1
+		;;
+	kfreebsd*-gnu* | kopensolaris*-gnu*)
+		;;
+	vxworks-simlinux | vxworks-simwindows | vxworks-spe)
+		;;
+	nto-qnx*)
+		;;
+	os2-emx)
+		;;
+	*-eabi* | *-gnueabi*)
+		;;
+	-*)
+		# Blank kernel with real OS is always fine.
+		;;
+	*-*)
+		echo "Invalid configuration \`$1': Kernel \`$kernel' not known to work with OS \`$os'." 1>&2
+		exit 1
+		;;
+esac
+
+# Here we handle the case where we know the os, and the CPU type, but not the
+# manufacturer.  We pick the logical manufacturer.
+case $vendor in
+	unknown)
+		case $cpu-$os in
+			*-riscix*)
+				vendor=acorn
+				;;
+			*-sunos*)
+				vendor=sun
+				;;
+			*-cnk* | *-aix*)
+				vendor=ibm
+				;;
+			*-beos*)
+				vendor=be
+				;;
+			*-hpux*)
+				vendor=hp
+				;;
+			*-mpeix*)
+				vendor=hp
+				;;
+			*-hiux*)
+				vendor=hitachi
+				;;
+			*-unos*)
+				vendor=crds
+				;;
+			*-dgux*)
+				vendor=dg
+				;;
+			*-luna*)
+				vendor=omron
+				;;
+			*-genix*)
+				vendor=ns
+				;;
+			*-clix*)
+				vendor=intergraph
+				;;
+			*-mvs* | *-opened*)
+				vendor=ibm
+				;;
+			*-os400*)
+				vendor=ibm
+				;;
+			s390-* | s390x-*)
+				vendor=ibm
+				;;
+			*-ptx*)
+				vendor=sequent
+				;;
+			*-tpf*)
+				vendor=ibm
+				;;
+			*-vxsim* | *-vxworks* | *-windiss*)
+				vendor=wrs
+				;;
+			*-aux*)
+				vendor=apple
+				;;
+			*-hms*)
+				vendor=hitachi
+				;;
+			*-mpw* | *-macos*)
+				vendor=apple
+				;;
+			*-*mint | *-mint[0-9]* | *-*MiNT | *-MiNT[0-9]*)
+				vendor=atari
+				;;
+			*-vos*)
+				vendor=stratus
+				;;
+		esac
+		;;
+esac
+
+echo "$cpu-$vendor-${kernel:+$kernel-}$os"
+exit
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/src/grep/build-aux/depcomp b/src/grep/build-aux/depcomp
new file mode 100755
index 0000000..715e343
--- /dev/null
+++ b/src/grep/build-aux/depcomp
@@ -0,0 +1,791 @@
+#! /bin/sh
+# depcomp - compile a program generating dependencies as side-effects
+
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1999-2021 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
+
+case $1 in
+  '')
+    echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+    exit 1;
+    ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: depcomp [--help] [--version] PROGRAM [ARGS]
+
+Run PROGRAMS ARGS to compile a file, generating dependencies
+as side-effects.
+
+Environment variables:
+  depmode     Dependency tracking mode.
+  source      Source file read by 'PROGRAMS ARGS'.
+  object      Object file output by 'PROGRAMS ARGS'.
+  DEPDIR      directory where to store dependencies.
+  depfile     Dependency file to output.
+  tmpdepfile  Temporary file to use when outputting dependencies.
+  libtool     Whether libtool is used (yes/no).
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "depcomp $scriptversion"
+    exit $?
+    ;;
+esac
+
+# Get the directory component of the given path, and save it in the
+# global variables '$dir'.  Note that this directory component will
+# be either empty or ending with a '/' character.  This is deliberate.
+set_dir_from ()
+{
+  case $1 in
+    */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
+      *) dir=;;
+  esac
+}
+
+# Get the suffix-stripped basename of the given path, and save it the
+# global variable '$base'.
+set_base_from ()
+{
+  base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
+}
+
+# If no dependency file was actually created by the compiler invocation,
+# we still have to create a dummy depfile, to avoid errors with the
+# Makefile "include basename.Plo" scheme.
+make_dummy_depfile ()
+{
+  echo "#dummy" > "$depfile"
+}
+
+# Factor out some common post-processing of the generated depfile.
+# Requires the auxiliary global variable '$tmpdepfile' to be set.
+aix_post_process_depfile ()
+{
+  # If the compiler actually managed to produce a dependency file,
+  # post-process it.
+  if test -f "$tmpdepfile"; then
+    # Each line is of the form 'foo.o: dependency.h'.
+    # Do two passes, one to just change these to
+    #   $object: dependency.h
+    # and one to simply output
+    #   dependency.h:
+    # which is needed to avoid the deleted-header problem.
+    { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
+      sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
+    } > "$depfile"
+    rm -f "$tmpdepfile"
+  else
+    make_dummy_depfile
+  fi
+}
+
+# A tabulation character.
+tab='	'
+# A newline character.
+nl='
+'
+# Character ranges might be problematic outside the C locale.
+# These definitions help.
+upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
+lower=abcdefghijklmnopqrstuvwxyz
+digits=0123456789
+alpha=${upper}${lower}
+
+if test -z "$depmode" || test -z "$source" || test -z "$object"; then
+  echo "depcomp: Variables source, object and depmode must be set" 1>&2
+  exit 1
+fi
+
+# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
+depfile=${depfile-`echo "$object" |
+  sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
+tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
+
+rm -f "$tmpdepfile"
+
+# Avoid interferences from the environment.
+gccflag= dashmflag=
+
+# Some modes work just like other modes, but use different flags.  We
+# parameterize here, but still list the modes in the big case below,
+# to make depend.m4 easier to write.  Note that we *cannot* use a case
+# here, because this file can only contain one case statement.
+if test "$depmode" = hp; then
+  # HP compiler uses -M and no extra arg.
+  gccflag=-M
+  depmode=gcc
+fi
+
+if test "$depmode" = dashXmstdout; then
+  # This is just like dashmstdout with a different argument.
+  dashmflag=-xM
+  depmode=dashmstdout
+fi
+
+cygpath_u="cygpath -u -f -"
+if test "$depmode" = msvcmsys; then
+  # This is just like msvisualcpp but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvisualcpp
+fi
+
+if test "$depmode" = msvc7msys; then
+  # This is just like msvc7 but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvc7
+fi
+
+if test "$depmode" = xlc; then
+  # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
+  gccflag=-qmakedep=gcc,-MF
+  depmode=gcc
+fi
+
+case "$depmode" in
+gcc3)
+## gcc 3 implements dependency tracking that does exactly what
+## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
+## it if -MD -MP comes after the -MF stuff.  Hmm.
+## Unfortunately, FreeBSD c89 acceptance of flags depends upon
+## the command line argument order; so add the flags where they
+## appear in depend2.am.  Note that the slowdown incurred here
+## affects only configure: in makefiles, %FASTDEP% shortcuts this.
+  for arg
+  do
+    case $arg in
+    -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
+    *)  set fnord "$@" "$arg" ;;
+    esac
+    shift # fnord
+    shift # $arg
+  done
+  "$@"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  mv "$tmpdepfile" "$depfile"
+  ;;
+
+gcc)
+## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
+## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
+## (see the conditional assignment to $gccflag above).
+## There are various ways to get dependency output from gcc.  Here's
+## why we pick this rather obscure method:
+## - Don't want to use -MD because we'd like the dependencies to end
+##   up in a subdir.  Having to rename by hand is ugly.
+##   (We might end up doing this anyway to support other compilers.)
+## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
+##   -MM, not -M (despite what the docs say).  Also, it might not be
+##   supported by the other compilers which use the 'gcc' depmode.
+## - Using -M directly means running the compiler twice (even worse
+##   than renaming).
+  if test -z "$gccflag"; then
+    gccflag=-MD,
+  fi
+  "$@" -Wp,"$gccflag$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  # The second -e expression handles DOS-style file names with drive
+  # letters.
+  sed -e 's/^[^:]*: / /' \
+      -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
+## This next piece of magic avoids the "deleted header file" problem.
+## The problem is that when a header file which appears in a .P file
+## is deleted, the dependency causes make to die (because there is
+## typically no way to rebuild the header).  We avoid this by adding
+## dummy dependencies for each header file.  Too bad gcc doesn't do
+## this for us directly.
+## Some versions of gcc put a space before the ':'.  On the theory
+## that the space means something, we add a space to the output as
+## well.  hp depmode also adds that space, but also prefixes the VPATH
+## to the object.  Take care to not repeat it in the output.
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+sgi)
+  if test "$libtool" = yes; then
+    "$@" "-Wp,-MDupdate,$tmpdepfile"
+  else
+    "$@" -MDupdate "$tmpdepfile"
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+
+  if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
+    echo "$object : \\" > "$depfile"
+    # Clip off the initial element (the dependent).  Don't try to be
+    # clever and replace this with sed code, as IRIX sed won't handle
+    # lines with more than a fixed number of characters (4096 in
+    # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
+    # the IRIX cc adds comments like '#:fec' to the end of the
+    # dependency line.
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
+      | tr "$nl" ' ' >> "$depfile"
+    echo >> "$depfile"
+    # The second pass generates a dummy entry for each header file.
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
+      >> "$depfile"
+  else
+    make_dummy_depfile
+  fi
+  rm -f "$tmpdepfile"
+  ;;
+
+xlc)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+aix)
+  # The C for AIX Compiler uses -M and outputs the dependencies
+  # in a .u file.  In older versions, this file always lives in the
+  # current directory.  Also, the AIX compiler puts '$object:' at the
+  # start of each line; $object doesn't have directory information.
+  # Version 6 uses the directory in both cases.
+  set_dir_from "$object"
+  set_base_from "$object"
+  if test "$libtool" = yes; then
+    tmpdepfile1=$dir$base.u
+    tmpdepfile2=$base.u
+    tmpdepfile3=$dir.libs/$base.u
+    "$@" -Wc,-M
+  else
+    tmpdepfile1=$dir$base.u
+    tmpdepfile2=$dir$base.u
+    tmpdepfile3=$dir$base.u
+    "$@" -M
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  aix_post_process_depfile
+  ;;
+
+tcc)
+  # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
+  # FIXME: That version still under development at the moment of writing.
+  #        Make that this statement remains true also for stable, released
+  #        versions.
+  # It will wrap lines (doesn't matter whether long or short) with a
+  # trailing '\', as in:
+  #
+  #   foo.o : \
+  #    foo.c \
+  #    foo.h \
+  #
+  # It will put a trailing '\' even on the last line, and will use leading
+  # spaces rather than leading tabs (at least since its commit 0394caf7
+  # "Emit spaces for -MD").
+  "$@" -MD -MF "$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
+  # We have to change lines of the first kind to '$object: \'.
+  sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
+  # And for each line of the second kind, we have to emit a 'dep.h:'
+  # dummy dependency, to avoid the deleted-header problem.
+  sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+## The order of this option in the case statement is important, since the
+## shell code in configure will try each of these formats in the order
+## listed in this file.  A plain '-MD' option would be understood by many
+## compilers, so we must ensure this comes after the gcc and icc options.
+pgcc)
+  # Portland's C compiler understands '-MD'.
+  # Will always output deps to 'file.d' where file is the root name of the
+  # source file under compilation, even if file resides in a subdirectory.
+  # The object file name does not affect the name of the '.d' file.
+  # pgcc 10.2 will output
+  #    foo.o: sub/foo.c sub/foo.h
+  # and will wrap long lines using '\' :
+  #    foo.o: sub/foo.c ... \
+  #     sub/foo.h ... \
+  #     ...
+  set_dir_from "$object"
+  # Use the source, not the object, to determine the base name, since
+  # that's sadly what pgcc will do too.
+  set_base_from "$source"
+  tmpdepfile=$base.d
+
+  # For projects that build the same source file twice into different object
+  # files, the pgcc approach of using the *source* file root name can cause
+  # problems in parallel builds.  Use a locking strategy to avoid stomping on
+  # the same $tmpdepfile.
+  lockdir=$base.d-lock
+  trap "
+    echo '$0: caught signal, cleaning up...' >&2
+    rmdir '$lockdir'
+    exit 1
+  " 1 2 13 15
+  numtries=100
+  i=$numtries
+  while test $i -gt 0; do
+    # mkdir is a portable test-and-set.
+    if mkdir "$lockdir" 2>/dev/null; then
+      # This process acquired the lock.
+      "$@" -MD
+      stat=$?
+      # Release the lock.
+      rmdir "$lockdir"
+      break
+    else
+      # If the lock is being held by a different process, wait
+      # until the winning process is done or we timeout.
+      while test -d "$lockdir" && test $i -gt 0; do
+        sleep 1
+        i=`expr $i - 1`
+      done
+    fi
+    i=`expr $i - 1`
+  done
+  trap - 1 2 13 15
+  if test $i -le 0; then
+    echo "$0: failed to acquire lock after $numtries attempts" >&2
+    echo "$0: check lockdir '$lockdir'" >&2
+    exit 1
+  fi
+
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each line is of the form `foo.o: dependent.h',
+  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
+  # Do two passes, one to just change these to
+  # `$object: dependent.h' and one to simply `dependent.h:'.
+  sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp2)
+  # The "hp" stanza above does not work with aCC (C++) and HP's ia64
+  # compilers, which have integrated preprocessors.  The correct option
+  # to use with these is +Maked; it writes dependencies to a file named
+  # 'foo.d', which lands next to the object file, wherever that
+  # happens to be.
+  # Much of this is similar to the tru64 case; see comments there.
+  set_dir_from  "$object"
+  set_base_from "$object"
+  if test "$libtool" = yes; then
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir.libs/$base.d
+    "$@" -Wc,+Maked
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    "$@" +Maked
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+     rm -f "$tmpdepfile1" "$tmpdepfile2"
+     exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  if test -f "$tmpdepfile"; then
+    sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
+    # Add 'dependent.h:' lines.
+    sed -ne '2,${
+               s/^ *//
+               s/ \\*$//
+               s/$/:/
+               p
+             }' "$tmpdepfile" >> "$depfile"
+  else
+    make_dummy_depfile
+  fi
+  rm -f "$tmpdepfile" "$tmpdepfile2"
+  ;;
+
+tru64)
+  # The Tru64 compiler uses -MD to generate dependencies as a side
+  # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
+  # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+  # dependencies in 'foo.d' instead, so we check for that too.
+  # Subdirectories are respected.
+  set_dir_from  "$object"
+  set_base_from "$object"
+
+  if test "$libtool" = yes; then
+    # Libtool generates 2 separate objects for the 2 libraries.  These
+    # two compilations output dependencies in $dir.libs/$base.o.d and
+    # in $dir$base.o.d.  We have to check for both files, because
+    # one of the two compilations can be disabled.  We should prefer
+    # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
+    # automatically cleaned when .libs/ is deleted, while ignoring
+    # the former would cause a distcleancheck panic.
+    tmpdepfile1=$dir$base.o.d          # libtool 1.5
+    tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
+    tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
+    "$@" -Wc,-MD
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    tmpdepfile3=$dir$base.d
+    "$@" -MD
+  fi
+
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  # Same post-processing that is required for AIX mode.
+  aix_post_process_depfile
+  ;;
+
+msvc7)
+  if test "$libtool" = yes; then
+    showIncludes=-Wc,-showIncludes
+  else
+    showIncludes=-showIncludes
+  fi
+  "$@" $showIncludes > "$tmpdepfile"
+  stat=$?
+  grep -v '^Note: including file: ' "$tmpdepfile"
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  # The first sed program below extracts the file names and escapes
+  # backslashes for cygpath.  The second sed program outputs the file
+  # name when reading, but also accumulates all include files in the
+  # hold buffer in order to output them again at the end.  This only
+  # works with sed implementations that can handle large buffers.
+  sed < "$tmpdepfile" -n '
+/^Note: including file:  *\(.*\)/ {
+  s//\1/
+  s/\\/\\\\/g
+  p
+}' | $cygpath_u | sort -u | sed -n '
+s/ /\\ /g
+s/\(.*\)/'"$tab"'\1 \\/p
+s/.\(.*\) \\/\1:/
+H
+$ {
+  s/.*/'"$tab"'/
+  G
+  p
+}' >> "$depfile"
+  echo >> "$depfile" # make sure the fragment doesn't end with a backslash
+  rm -f "$tmpdepfile"
+  ;;
+
+msvc7msys)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+#nosideeffect)
+  # This comment above is used by automake to tell side-effect
+  # dependency tracking mechanisms from slower ones.
+
+dashmstdout)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout, regardless of -o.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  # Remove '-o $object'.
+  IFS=" "
+  for arg
+  do
+    case $arg in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    *)
+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
+    esac
+  done
+
+  test -z "$dashmflag" && dashmflag=-M
+  # Require at least two characters before searching for ':'
+  # in the target name.  This is to cope with DOS-style filenames:
+  # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
+  "$@" $dashmflag |
+    sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
+  rm -f "$depfile"
+  cat < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this sed invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+dashXmstdout)
+  # This case only exists to satisfy depend.m4.  It is never actually
+  # run, as this mode is specially recognized in the preamble.
+  exit 1
+  ;;
+
+makedepend)
+  "$@" || exit $?
+  # Remove any Libtool call
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+  # X makedepend
+  shift
+  cleared=no eat=no
+  for arg
+  do
+    case $cleared in
+    no)
+      set ""; shift
+      cleared=yes ;;
+    esac
+    if test $eat = yes; then
+      eat=no
+      continue
+    fi
+    case "$arg" in
+    -D*|-I*)
+      set fnord "$@" "$arg"; shift ;;
+    # Strip any option that makedepend may not understand.  Remove
+    # the object too, otherwise makedepend will parse it as a source file.
+    -arch)
+      eat=yes ;;
+    -*|$object)
+      ;;
+    *)
+      set fnord "$@" "$arg"; shift ;;
+    esac
+  done
+  obj_suffix=`echo "$object" | sed 's/^.*\././'`
+  touch "$tmpdepfile"
+  ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
+  rm -f "$depfile"
+  # makedepend may prepend the VPATH from the source file name to the object.
+  # No need to regex-escape $object, excess matching of '.' is harmless.
+  sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process the last invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed '1,2d' "$tmpdepfile" \
+    | tr ' ' "$nl" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile" "$tmpdepfile".bak
+  ;;
+
+cpp)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  # Remove '-o $object'.
+  IFS=" "
+  for arg
+  do
+    case $arg in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    *)
+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
+    esac
+  done
+
+  "$@" -E \
+    | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+             -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+    | sed '$ s: \\$::' > "$tmpdepfile"
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  cat < "$tmpdepfile" >> "$depfile"
+  sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+msvisualcpp)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  IFS=" "
+  for arg
+  do
+    case "$arg" in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
+        set fnord "$@"
+        shift
+        shift
+        ;;
+    *)
+        set fnord "$@" "$arg"
+        shift
+        shift
+        ;;
+    esac
+  done
+  "$@" -E 2>/dev/null |
+  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
+  echo "$tab" >> "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+msvcmsys)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+none)
+  exec "$@"
+  ;;
+
+*)
+  echo "Unknown depmode $depmode" 1>&2
+  exit 1
+  ;;
+esac
+
+exit 0
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/grep/build-aux/do-release-commit-and-tag b/src/grep/build-aux/do-release-commit-and-tag
new file mode 100755
index 0000000..5605f42
--- /dev/null
+++ b/src/grep/build-aux/do-release-commit-and-tag
@@ -0,0 +1,179 @@
+#!/bin/sh
+# In a git/autoconf/automake-enabled project with a NEWS file and a version-
+# controlled .prev-version file, automate the procedure by which we record
+# the date, release-type and version string in the NEWS file.  That commit
+# will serve to identify the release, so apply a signed tag to it as well.
+VERSION=2018-03-07.03 # UTC
+
+# Note: this is a bash script (could be zsh or dash)
+
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Written by Jim Meyering
+
+ME=$(basename "$0")
+warn() { printf '%s: %s\n' "$ME" "$*" >&2; }
+die() { warn "$*"; exit 1; }
+
+help()
+{
+  cat <<EOF
+Usage: $ME [OPTION...] VERSION RELEASE_TYPE
+
+Run this script from top_srcdir to perform the final pre-release NEWS
+update in which the date, release-type and version string are
+recorded.  Commit that result with a log entry marking the release,
+and apply a signed tag.  Run it from your project's top-level
+directory.
+
+Requirements:
+- you use git for version-control
+- a version-controlled .prev-version file
+- a NEWS file, with line 3 identical to this:
+$noteworthy_stub
+
+Options:
+  --branch=BRANCH     set release branch (default: $branch)
+  -C, --builddir=DIR  location of (configured) Makefile (default: $builddir)
+  --help              print this help, then exit
+  --version           print version number, then exit
+
+EXAMPLE:
+To update NEWS and tag the beta 8.1 release of coreutils, I would run this:
+
+  $ME 8.1 beta
+
+Report bugs and patches to <bug-gnulib@gnu.org>.
+EOF
+  exit
+}
+
+version()
+{
+  year=$(echo "$VERSION" | sed 's/[^0-9].*//')
+  cat <<EOF
+$ME $VERSION
+Copyright (C) $year Free Software Foundation, Inc,
+License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+EOF
+  exit
+}
+
+## ------ ##
+## Main.  ##
+## ------ ##
+
+# Constants.
+noteworthy='* Noteworthy changes in release'
+noteworthy_stub="$noteworthy ?.? (????-??-??) [?]"
+
+# Variables.
+branch=$(git branch | sed -ne '/^\* /{s///;p;q;}')
+builddir=.
+
+while test $# != 0
+do
+  # Handle --option=value by splitting apart and putting back on argv.
+  case $1 in
+    --*=*)
+      opt=$(echo "$1" | sed -e 's/=.*//')
+      val=$(echo "$1" | sed -e 's/[^=]*=//')
+      shift
+      set dummy "$opt" "$val" "$@"; shift
+      ;;
+  esac
+
+  case $1 in
+    --help|--version) ${1#--};;
+    --branch) shift; branch=$1; shift ;;
+    -C|--builddir) shift; builddir=$1; shift ;;
+    --*) die "unrecognized option: $1";;
+    *) break;;
+  esac
+done
+
+test $# = 2 \
+  || die "Usage: $ME [OPTION...] VERSION TYPE"
+
+ver=$1
+type=$2
+
+
+## ---------------------- ##
+## First, sanity checks.  ##
+## ---------------------- ##
+
+# Verify that $ver looks like a version number, and...
+echo "$ver"|grep -E '^[0-9][0-9.]*[0-9]$' > /dev/null \
+  || die "invalid version: $ver"
+prev_ver=$(cat .prev-version) \
+  || die 'failed to determine previous version number from .prev-version'
+
+# Verify that $ver is sensible (> .prev-version).
+case $(printf "$prev_ver\n$ver\n"|sort -V -u|tr '\n' ':') in
+  "$prev_ver:$ver:") ;;
+  *) die "invalid version: $ver (<= $prev_ver)";;
+esac
+
+case $type in
+  alpha|beta|stable) ;;
+  *) die "invalid release type: $type";;
+esac
+
+# No local modifications allowed.
+case $(git diff-index --name-only HEAD) in
+  '') ;;
+  *) die 'this tree is dirty; commit your changes first';;
+esac
+
+# Ensure the current branch name is correct:
+curr_br=$(git rev-parse --symbolic-full-name HEAD)
+test "$curr_br" = "refs/heads/$branch" || die not on branch $branch
+
+# Extract package name from Makefile.
+Makefile=$builddir/Makefile
+pkg=$(sed -n 's/^PACKAGE = \(.*\)/\1/p' "$Makefile") \
+  || die "failed to determine package name from $Makefile"
+
+# Check that line 3 of NEWS is the stub line about to be replaced.
+test "$(sed -n 3p NEWS)" = "$noteworthy_stub" \
+  || die "line 3 of NEWS must be exactly '$noteworthy_stub'"
+
+## --------------- ##
+## Then, changes.  ##
+## --------------- ##
+
+# Update NEWS to have today's date, plus desired version number and $type.
+perl -MPOSIX -ni -e 'my $today = strftime "%F", localtime time;' \
+ -e 'my ($type, $ver) = qw('"$type $ver"');' \
+ -e 'my $pfx = "'"$noteworthy"'";' \
+ -e 'print $.==3 ? "$pfx $ver ($today) [$type]\n" : $_' \
+     NEWS || die 'failed to update NEWS'
+
+printf "version $ver\n\n* NEWS: Record release date.\n" \
+    | git commit -F -  -a || die 'git commit failed'
+git tag -s -m "$pkg $ver" v$ver HEAD || die 'git tag failed'
+
+# Local variables:
+# indent-tabs-mode: nil
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "VERSION="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: " # UTC"
+# End:
diff --git a/src/grep/build-aux/gendocs.sh b/src/grep/build-aux/gendocs.sh
new file mode 100755
index 0000000..1241ee3
--- /dev/null
+++ b/src/grep/build-aux/gendocs.sh
@@ -0,0 +1,510 @@
+#!/bin/sh -e
+# gendocs.sh -- generate a GNU manual in many formats.  This script is
+#   mentioned in maintain.texi.  See the help message below for usage details.
+
+scriptversion=2021-07-19.18
+
+# Copyright 2003-2021 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# Original author: Mohit Agarwal.
+# Send bug reports and any other correspondence to bug-gnulib@gnu.org.
+#
+# The latest version of this script, and the companion template, is
+# available from the Gnulib repository:
+#
+# https://git.savannah.gnu.org/cgit/gnulib.git/tree/build-aux/gendocs.sh
+# https://git.savannah.gnu.org/cgit/gnulib.git/tree/doc/gendocs_template
+
+# TODO:
+# - image importing was only implemented for HTML generated by
+#   makeinfo.  But it should be simple enough to adjust.
+# - images are not imported in the source tarball.  All the needed
+#   formats (PDF, PNG, etc.) should be included.
+
+prog=`basename "$0"`
+srcdir=`pwd`
+
+scripturl="https://git.savannah.gnu.org/cgit/gnulib.git/plain/build-aux/gendocs.sh"
+templateurl="https://git.savannah.gnu.org/cgit/gnulib.git/plain/doc/gendocs_template"
+
+: ${SETLANG="env LANG= LC_MESSAGES= LC_ALL= LANGUAGE="}
+: ${MAKEINFO="makeinfo"}
+: ${TEXI2DVI="texi2dvi"}
+: ${DOCBOOK2HTML="docbook2html"}
+: ${DOCBOOK2PDF="docbook2pdf"}
+: ${DOCBOOK2TXT="docbook2txt"}
+: ${GENDOCS_TEMPLATE_DIR="."}
+: ${PERL='perl'}
+: ${TEXI2HTML="texi2html"}
+unset CDPATH
+unset use_texi2html
+
+MANUAL_TITLE=
+PACKAGE=
+EMAIL=webmasters@gnu.org  # please override with --email
+commonarg= # passed to all makeinfo/texi2html invcations.
+dirargs=   # passed to all tools (-I dir).
+dirs=      # -I directories.
+htmlarg="--css-ref=https://www.gnu.org/software/gnulib/manual.css -c TOP_NODE_UP_URL=/manual"
+default_htmlarg=true
+infoarg=--no-split
+generate_ascii=true
+generate_html=true
+generate_info=true
+generate_tex=true
+outdir=manual
+source_extra=
+split=node
+srcfile=
+texarg="-t @finalout"
+
+version="gendocs.sh $scriptversion
+
+Copyright 2021 Free Software Foundation, Inc.
+There is NO warranty.  You may redistribute this software
+under the terms of the GNU General Public License.
+For more information about these matters, see the files named COPYING."
+
+usage="Usage: $prog [OPTION]... PACKAGE MANUAL-TITLE
+
+Generate output in various formats from PACKAGE.texinfo (or .texi or
+.txi) source.  See the GNU Maintainers document for a more extensive
+discussion:
+  https://www.gnu.org/prep/maintain_toc.html
+
+Options:
+  --email ADR use ADR as contact in generated web pages; always give this.
+
+  -s SRCFILE   read Texinfo from SRCFILE, instead of PACKAGE.{texinfo|texi|txi}
+  -o OUTDIR    write files into OUTDIR, instead of manual/.
+  -I DIR       append DIR to the Texinfo search path.
+  --common ARG pass ARG in all invocations.
+  --html ARG   pass ARG to makeinfo or texi2html for HTML targets,
+                 instead of '$htmlarg'.
+  --info ARG   pass ARG to makeinfo for Info, instead of --no-split.
+  --no-ascii   skip generating the plain text output.
+  --no-html    skip generating the html output.
+  --no-info    skip generating the info output.
+  --no-tex     skip generating the dvi and pdf output.
+  --source ARG include ARG in tar archive of sources.
+  --split HOW  make split HTML by node, section, chapter; default node.
+  --tex ARG    pass ARG to texi2dvi for DVI and PDF, instead of -t @finalout.
+
+  --texi2html  use texi2html to make HTML target, with all split versions.
+  --docbook    convert through DocBook too (xml, txt, html, pdf).
+
+  --help       display this help and exit successfully.
+  --version    display version information and exit successfully.
+
+Simple example: $prog --email bug-gnu-emacs@gnu.org emacs \"GNU Emacs Manual\"
+
+Typical sequence:
+  cd PACKAGESOURCE/doc
+  wget \"$scripturl\"
+  wget \"$templateurl\"
+  $prog --email BUGLIST MANUAL \"GNU MANUAL - One-line description\"
+
+Output will be in a new subdirectory \"manual\" (by default;
+use -o OUTDIR to override).  Move all the new files into your web CVS
+tree, as explained in the Web Pages node of maintain.texi.
+
+Please use the --email ADDRESS option so your own bug-reporting
+address will be used in the generated HTML pages.
+
+MANUAL-TITLE is included as part of the HTML <title> of the overall
+manual/index.html file.  It should include the name of the package being
+documented.  manual/index.html is created by substitution from the file
+$GENDOCS_TEMPLATE_DIR/gendocs_template.  (Feel free to modify the
+generic template for your own purposes.)
+
+If you have several manuals, you'll need to run this script several
+times with different MANUAL values, specifying a different output
+directory with -o each time.  Then write (by hand) an overall index.html
+with links to them all.
+
+If a manual's Texinfo sources are spread across several directories,
+first copy or symlink all Texinfo sources into a single directory.
+(Part of the script's work is to make a tar.gz of the sources.)
+
+As implied above, by default monolithic Info files are generated.
+If you want split Info, or other Info options, use --info to override.
+
+You can set the environment variables MAKEINFO, TEXI2DVI, TEXI2HTML,
+and PERL to control the programs that get executed, and
+GENDOCS_TEMPLATE_DIR to control where the gendocs_template file is
+looked for.  With --docbook, the environment variables DOCBOOK2HTML,
+DOCBOOK2PDF, and DOCBOOK2TXT are also consulted.
+
+By default, makeinfo and texi2dvi are run in the default (English)
+locale, since that's the language of most Texinfo manuals.  If you
+happen to have a non-English manual and non-English web site, see the
+SETLANG setting in the source.
+
+Email bug reports or enhancement requests to bug-gnulib@gnu.org.
+"
+
+while test $# -gt 0; do
+  case $1 in
+    -s)          shift; srcfile=$1;;
+    -o)          shift; outdir=$1;;
+    -I)          shift; dirargs="$dirargs -I '$1'"; dirs="$dirs $1";;
+    --common)    shift; commonarg=$1;;
+    --docbook)   docbook=yes;;
+    --email)     shift; EMAIL=$1;;
+    --html)      shift; default_htmlarg=false; htmlarg=$1;;
+    --info)      shift; infoarg=$1;;
+    --no-ascii)  generate_ascii=false;;
+    --no-html)   generate_ascii=false;;
+    --no-info)   generate_info=false;;
+    --no-tex)    generate_tex=false;;
+    --source)    shift; source_extra=$1;;
+    --split)     shift; split=$1;;
+    --tex)       shift; texarg=$1;;
+    --texi2html) use_texi2html=1;;
+
+    --help)      echo "$usage"; exit 0;;
+    --version)   echo "$version"; exit 0;;
+    -*)
+      echo "$0: Unknown option \`$1'." >&2
+      echo "$0: Try \`--help' for more information." >&2
+      exit 1;;
+    *)
+      if test -z "$PACKAGE"; then
+        PACKAGE=$1
+      elif test -z "$MANUAL_TITLE"; then
+        MANUAL_TITLE=$1
+      else
+        echo "$0: extra non-option argument \`$1'." >&2
+        exit 1
+      fi;;
+  esac
+  shift
+done
+
+# makeinfo uses the dirargs, but texi2dvi doesn't.
+commonarg=" $dirargs $commonarg"
+
+# For most of the following, the base name is just $PACKAGE
+base=$PACKAGE
+
+if $default_htmlarg && test -n "$use_texi2html"; then
+  # The legacy texi2html doesn't support TOP_NODE_UP_URL
+  htmlarg="--css-ref=https://www.gnu.org/software/gnulib/manual.css"
+fi
+
+if test -n "$srcfile"; then
+  # but here, we use the basename of $srcfile
+  base=`basename "$srcfile"`
+  case $base in
+    *.txi|*.texi|*.texinfo) base=`echo "$base"|sed 's/\.[texinfo]*$//'`;;
+  esac
+  PACKAGE=$base
+elif test -s "$srcdir/$PACKAGE.texinfo"; then
+  srcfile=$srcdir/$PACKAGE.texinfo
+elif test -s "$srcdir/$PACKAGE.texi"; then
+  srcfile=$srcdir/$PACKAGE.texi
+elif test -s "$srcdir/$PACKAGE.txi"; then
+  srcfile=$srcdir/$PACKAGE.txi
+else
+  echo "$0: cannot find .texinfo or .texi or .txi for $PACKAGE in $srcdir." >&2
+  exit 1
+fi
+
+if test ! -r $GENDOCS_TEMPLATE_DIR/gendocs_template; then
+  echo "$0: cannot read $GENDOCS_TEMPLATE_DIR/gendocs_template." >&2
+  echo "$0: it is available from $templateurl." >&2
+  exit 1
+fi
+
+# Function to return size of $1 in something resembling kilobytes.
+calcsize()
+{
+  size=`ls -ksl $1 | awk '{print $1}'`
+  echo $size
+}
+
+# copy_images OUTDIR HTML-FILE...
+# -------------------------------
+# Copy all the images needed by the HTML-FILEs into OUTDIR.
+# Look for them in . and the -I directories; this is simpler than what
+# makeinfo supports with -I, but hopefully it will suffice.
+copy_images()
+{
+  local odir
+  odir=$1
+  shift
+  $PERL -n -e "
+BEGIN {
+  \$me = '$prog';
+  \$odir = '$odir';
+  @dirs = qw(. $dirs);
+}
+" -e '
+/<img src="(.*?)"/g && ++$need{$1};
+
+END {
+  #print "$me: @{[keys %need]}\n";  # for debugging, show images found.
+  FILE: for my $f (keys %need) {
+    for my $d (@dirs) {
+      if (-f "$d/$f") {
+        use File::Basename;
+        my $dest = dirname ("$odir/$f");
+        #
+        use File::Path;
+        -d $dest || mkpath ($dest)
+          || die "$me: cannot mkdir $dest: $!\n";
+        #
+        use File::Copy;
+        copy ("$d/$f", $dest)
+          || die "$me: cannot copy $d/$f to $dest: $!\n";
+        next FILE;
+      }
+    }
+    die "$me: $ARGV: cannot find image $f\n";
+  }
+}
+' -- "$@" || exit 1
+}
+
+case $outdir in
+  /*) abs_outdir=$outdir;;
+  *)  abs_outdir=$srcdir/$outdir;;
+esac
+
+echo "Making output for $srcfile"
+echo " in `pwd`"
+mkdir -p "$outdir/"
+
+# 
+if $generate_info; then
+  cmd="$SETLANG $MAKEINFO -o $PACKAGE.info $commonarg $infoarg \"$srcfile\""
+  echo "Generating info... ($cmd)"
+  rm -f $PACKAGE.info* # get rid of any strays
+  eval "$cmd"
+  tar czf "$outdir/$PACKAGE.info.tar.gz" $PACKAGE.info*
+  ls -l "$outdir/$PACKAGE.info.tar.gz"
+  info_tgz_size=`calcsize "$outdir/$PACKAGE.info.tar.gz"`
+  # do not mv the info files, there's no point in having them available
+  # separately on the web.
+fi  # end info
+
+# 
+if $generate_tex; then
+  cmd="$SETLANG $TEXI2DVI $dirargs $texarg \"$srcfile\""
+  printf "\nGenerating dvi... ($cmd)\n"
+  eval "$cmd"
+  # compress/finish dvi:
+  gzip -f -9 $PACKAGE.dvi
+  dvi_gz_size=`calcsize $PACKAGE.dvi.gz`
+  mv $PACKAGE.dvi.gz "$outdir/"
+  ls -l "$outdir/$PACKAGE.dvi.gz"
+
+  cmd="$SETLANG $TEXI2DVI --pdf $dirargs $texarg \"$srcfile\""
+  printf "\nGenerating pdf... ($cmd)\n"
+  eval "$cmd"
+  pdf_size=`calcsize $PACKAGE.pdf`
+  mv $PACKAGE.pdf "$outdir/"
+  ls -l "$outdir/$PACKAGE.pdf"
+fi # end tex (dvi + pdf)
+
+# 
+if $generate_ascii; then
+  opt="-o $PACKAGE.txt --no-split --no-headers $commonarg"
+  cmd="$SETLANG $MAKEINFO $opt \"$srcfile\""
+  printf "\nGenerating ascii... ($cmd)\n"
+  eval "$cmd"
+  ascii_size=`calcsize $PACKAGE.txt`
+  gzip -f -9 -c $PACKAGE.txt >"$outdir/$PACKAGE.txt.gz"
+  ascii_gz_size=`calcsize "$outdir/$PACKAGE.txt.gz"`
+  mv $PACKAGE.txt "$outdir/"
+  ls -l "$outdir/$PACKAGE.txt" "$outdir/$PACKAGE.txt.gz"
+fi
+
+# 
+
+if $generate_html; then
+# Split HTML at level $1.  Used for texi2html.
+html_split()
+{
+  opt="--split=$1 --node-files $commonarg $htmlarg"
+  cmd="$SETLANG $TEXI2HTML --output $PACKAGE.html $opt \"$srcfile\""
+  printf "\nGenerating html by $1... ($cmd)\n"
+  eval "$cmd"
+  split_html_dir=$PACKAGE.html
+  (
+    cd ${split_html_dir} || exit 1
+    ln -sf ${PACKAGE}.html index.html
+    tar -czf "$abs_outdir/${PACKAGE}.html_$1.tar.gz" -- *.html
+  )
+  eval html_$1_tgz_size=`calcsize "$outdir/${PACKAGE}.html_$1.tar.gz"`
+  rm -f "$outdir"/html_$1/*.html
+  mkdir -p "$outdir/html_$1/"
+  mv ${split_html_dir}/*.html "$outdir/html_$1/"
+  rmdir ${split_html_dir}
+}
+
+if test -z "$use_texi2html"; then
+  opt="--no-split --html -o $PACKAGE.html $commonarg $htmlarg"
+  cmd="$SETLANG $MAKEINFO $opt \"$srcfile\""
+  printf "\nGenerating monolithic html... ($cmd)\n"
+  rm -rf $PACKAGE.html  # in case a directory is left over
+  eval "$cmd"
+  html_mono_size=`calcsize $PACKAGE.html`
+  gzip -f -9 -c $PACKAGE.html >"$outdir/$PACKAGE.html.gz"
+  html_mono_gz_size=`calcsize "$outdir/$PACKAGE.html.gz"`
+  copy_images "$outdir/" $PACKAGE.html
+  mv $PACKAGE.html "$outdir/"
+  ls -l "$outdir/$PACKAGE.html" "$outdir/$PACKAGE.html.gz"
+
+  # Before Texinfo 5.0, makeinfo did not accept a --split=HOW option,
+  # it just always split by node.  So if we're splitting by node anyway,
+  # leave it out.
+  if test "x$split" = xnode; then
+    split_arg=
+  else
+    split_arg=--split=$split
+  fi
+  #
+  opt="--html -o $PACKAGE.html $split_arg $commonarg $htmlarg"
+  cmd="$SETLANG $MAKEINFO $opt \"$srcfile\""
+  printf "\nGenerating html by $split... ($cmd)\n"
+  eval "$cmd"
+  split_html_dir=$PACKAGE.html
+  copy_images $split_html_dir/ $split_html_dir/*.html
+  (
+    cd $split_html_dir || exit 1
+    tar -czf "$abs_outdir/$PACKAGE.html_$split.tar.gz" -- *
+  )
+  eval \
+    html_${split}_tgz_size=`calcsize "$outdir/$PACKAGE.html_$split.tar.gz"`
+  rm -rf "$outdir/html_$split/"
+  mv $split_html_dir "$outdir/html_$split/"
+  du -s "$outdir/html_$split/"
+  ls -l "$outdir/$PACKAGE.html_$split.tar.gz"
+
+else # use texi2html:
+  opt="--output $PACKAGE.html $commonarg $htmlarg"
+  cmd="$SETLANG $TEXI2HTML $opt \"$srcfile\""
+  printf "\nGenerating monolithic html with texi2html... ($cmd)\n"
+  rm -rf $PACKAGE.html  # in case a directory is left over
+  eval "$cmd"
+  html_mono_size=`calcsize $PACKAGE.html`
+  gzip -f -9 -c $PACKAGE.html >"$outdir/$PACKAGE.html.gz"
+  html_mono_gz_size=`calcsize "$outdir/$PACKAGE.html.gz"`
+  mv $PACKAGE.html "$outdir/"
+
+  html_split node
+  html_split chapter
+  html_split section
+fi
+fi # end html
+
+# 
+printf "\nMaking .tar.gz for sources...\n"
+d=`dirname $srcfile`
+(
+  cd "$d"
+  srcfiles=`ls -d *.texinfo *.texi *.txi *.eps $source_extra 2>/dev/null` || true
+  tar czfh "$abs_outdir/$PACKAGE.texi.tar.gz" $srcfiles
+  ls -l "$abs_outdir/$PACKAGE.texi.tar.gz"
+)
+texi_tgz_size=`calcsize "$outdir/$PACKAGE.texi.tar.gz"`
+
+# 
+# Do everything again through docbook.
+if test -n "$docbook"; then
+  opt="-o - --docbook $commonarg"
+  cmd="$SETLANG $MAKEINFO $opt \"$srcfile\" >${srcdir}/$PACKAGE-db.xml"
+  printf "\nGenerating docbook XML... ($cmd)\n"
+  eval "$cmd"
+  docbook_xml_size=`calcsize $PACKAGE-db.xml`
+  gzip -f -9 -c $PACKAGE-db.xml >"$outdir/$PACKAGE-db.xml.gz"
+  docbook_xml_gz_size=`calcsize "$outdir/$PACKAGE-db.xml.gz"`
+  mv $PACKAGE-db.xml "$outdir/"
+
+  split_html_db_dir=html_node_db
+  opt="$commonarg -o $split_html_db_dir"
+  cmd="$DOCBOOK2HTML $opt \"${outdir}/$PACKAGE-db.xml\""
+  printf "\nGenerating docbook HTML... ($cmd)\n"
+  eval "$cmd"
+  (
+    cd ${split_html_db_dir} || exit 1
+    tar -czf "$abs_outdir/${PACKAGE}.html_node_db.tar.gz" -- *.html
+  )
+  html_node_db_tgz_size=`calcsize "$outdir/${PACKAGE}.html_node_db.tar.gz"`
+  rm -f "$outdir"/html_node_db/*.html
+  mkdir -p "$outdir/html_node_db"
+  mv ${split_html_db_dir}/*.html "$outdir/html_node_db/"
+  rmdir ${split_html_db_dir}
+
+  cmd="$DOCBOOK2TXT \"${outdir}/$PACKAGE-db.xml\""
+  printf "\nGenerating docbook ASCII... ($cmd)\n"
+  eval "$cmd"
+  docbook_ascii_size=`calcsize $PACKAGE-db.txt`
+  mv $PACKAGE-db.txt "$outdir/"
+
+  cmd="$DOCBOOK2PDF \"${outdir}/$PACKAGE-db.xml\""
+  printf "\nGenerating docbook PDF... ($cmd)\n"
+  eval "$cmd"
+  docbook_pdf_size=`calcsize $PACKAGE-db.pdf`
+  mv $PACKAGE-db.pdf "$outdir/"
+fi
+
+# 
+printf "\nMaking index.html for $PACKAGE...\n"
+if test -z "$use_texi2html"; then
+  CONDS="/%%IF  *HTML_SECTION%%/,/%%ENDIF  *HTML_SECTION%%/d;\
+         /%%IF  *HTML_CHAPTER%%/,/%%ENDIF  *HTML_CHAPTER%%/d"
+else
+  # should take account of --split here.
+  CONDS="/%%ENDIF.*%%/d;/%%IF  *HTML_SECTION%%/d;/%%IF  *HTML_CHAPTER%%/d"
+fi
+
+curdate=`$SETLANG date '+%B %d, %Y'`
+sed \
+   -e "s!%%TITLE%%!$MANUAL_TITLE!g" \
+   -e "s!%%EMAIL%%!$EMAIL!g" \
+   -e "s!%%PACKAGE%%!$PACKAGE!g" \
+   -e "s!%%DATE%%!$curdate!g" \
+   -e "s!%%HTML_MONO_SIZE%%!$html_mono_size!g" \
+   -e "s!%%HTML_MONO_GZ_SIZE%%!$html_mono_gz_size!g" \
+   -e "s!%%HTML_NODE_TGZ_SIZE%%!$html_node_tgz_size!g" \
+   -e "s!%%HTML_SECTION_TGZ_SIZE%%!$html_section_tgz_size!g" \
+   -e "s!%%HTML_CHAPTER_TGZ_SIZE%%!$html_chapter_tgz_size!g" \
+   -e "s!%%INFO_TGZ_SIZE%%!$info_tgz_size!g" \
+   -e "s!%%DVI_GZ_SIZE%%!$dvi_gz_size!g" \
+   -e "s!%%PDF_SIZE%%!$pdf_size!g" \
+   -e "s!%%ASCII_SIZE%%!$ascii_size!g" \
+   -e "s!%%ASCII_GZ_SIZE%%!$ascii_gz_size!g" \
+   -e "s!%%TEXI_TGZ_SIZE%%!$texi_tgz_size!g" \
+   -e "s!%%DOCBOOK_HTML_NODE_TGZ_SIZE%%!$html_node_db_tgz_size!g" \
+   -e "s!%%DOCBOOK_ASCII_SIZE%%!$docbook_ascii_size!g" \
+   -e "s!%%DOCBOOK_PDF_SIZE%%!$docbook_pdf_size!g" \
+   -e "s!%%DOCBOOK_XML_SIZE%%!$docbook_xml_size!g" \
+   -e "s!%%DOCBOOK_XML_GZ_SIZE%%!$docbook_xml_gz_size!g" \
+   -e "s,%%SCRIPTURL%%,$scripturl,g" \
+   -e "s!%%SCRIPTNAME%%!$prog!g" \
+   -e "$CONDS" \
+$GENDOCS_TEMPLATE_DIR/gendocs_template >"$outdir/index.html"
+
+echo "Done, see $outdir/ subdirectory for new files."
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
+# End:
diff --git a/src/grep/build-aux/git-version-gen b/src/grep/build-aux/git-version-gen
new file mode 100755
index 0000000..da525aa
--- /dev/null
+++ b/src/grep/build-aux/git-version-gen
@@ -0,0 +1,226 @@
+#!/bin/sh
+# Print a version string.
+scriptversion=2019-10-13.15; # UTC
+
+# Copyright (C) 2007-2021 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# This script is derived from GIT-VERSION-GEN from GIT: https://git-scm.com/.
+# It may be run two ways:
+# - from a git repository in which the "git describe" command below
+#   produces useful output (thus requiring at least one signed tag)
+# - from a non-git-repo directory containing a .tarball-version file, which
+#   presumes this script is invoked like "./git-version-gen .tarball-version".
+
+# In order to use intra-version strings in your project, you will need two
+# separate generated version string files:
+#
+# .tarball-version - present only in a distribution tarball, and not in
+#   a checked-out repository.  Created with contents that were learned at
+#   the last time autoconf was run, and used by git-version-gen.  Must not
+#   be present in either $(srcdir) or $(builddir) for git-version-gen to
+#   give accurate answers during normal development with a checked out tree,
+#   but must be present in a tarball when there is no version control system.
+#   Therefore, it cannot be used in any dependencies.  GNUmakefile has
+#   hooks to force a reconfigure at distribution time to get the value
+#   correct, without penalizing normal development with extra reconfigures.
+#
+# .version - present in a checked-out repository and in a distribution
+#   tarball.  Usable in dependencies, particularly for files that don't
+#   want to depend on config.h but do want to track version changes.
+#   Delete this file prior to any autoconf run where you want to rebuild
+#   files to pick up a version string change; and leave it stale to
+#   minimize rebuild time after unrelated changes to configure sources.
+#
+# As with any generated file in a VC'd directory, you should add
+# /.version to .gitignore, so that you don't accidentally commit it.
+# .tarball-version is never generated in a VC'd directory, so needn't
+# be listed there.
+#
+# Use the following line in your configure.ac, so that $(VERSION) will
+# automatically be up-to-date each time configure is run (and note that
+# since configure.ac no longer includes a version string, Makefile rules
+# should not depend on configure.ac for version updates).
+#
+# AC_INIT([GNU project],
+#         m4_esyscmd([build-aux/git-version-gen .tarball-version]),
+#         [bug-project@example])
+#
+# Then use the following lines in your Makefile.am, so that .version
+# will be present for dependencies, and so that .version and
+# .tarball-version will exist in distribution tarballs.
+#
+# EXTRA_DIST = $(top_srcdir)/.version
+# BUILT_SOURCES = $(top_srcdir)/.version
+# $(top_srcdir)/.version:
+#	echo $(VERSION) > $@-t && mv $@-t $@
+# dist-hook:
+#	echo $(VERSION) > $(distdir)/.tarball-version
+
+
+me=$0
+
+year=`expr "$scriptversion" : '\([^-]*\)'`
+version="git-version-gen $scriptversion
+
+Copyright (C) ${year} Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law."
+
+usage="\
+Usage: $me [OPTION]... \$srcdir/.tarball-version [TAG-NORMALIZATION-SED-SCRIPT]
+Print a version string.
+
+Options:
+
+   --prefix PREFIX    prefix of git tags (default 'v')
+   --fallback VERSION
+                      fallback version to use if \"git --version\" fails
+
+   --help             display this help and exit
+   --version          output version information and exit
+
+Running without arguments will suffice in most cases."
+
+prefix=v
+fallback=
+
+while test $# -gt 0; do
+  case $1 in
+    --help) echo "$usage"; exit 0;;
+    --version) echo "$version"; exit 0;;
+    --prefix) shift; prefix=${1?};;
+    --fallback) shift; fallback=${1?};;
+    -*)
+      echo "$0: Unknown option '$1'." >&2
+      echo "$0: Try '--help' for more information." >&2
+      exit 1;;
+    *)
+      if test "x$tarball_version_file" = x; then
+        tarball_version_file="$1"
+      elif test "x$tag_sed_script" = x; then
+        tag_sed_script="$1"
+      else
+        echo "$0: extra non-option argument '$1'." >&2
+        exit 1
+      fi;;
+  esac
+  shift
+done
+
+if test "x$tarball_version_file" = x; then
+    echo "$usage"
+    exit 1
+fi
+
+tag_sed_script="${tag_sed_script:-s/x/x/}"
+
+nl='
+'
+
+# Avoid meddling by environment variable of the same name.
+v=
+v_from_git=
+
+# First see if there is a tarball-only version file.
+# then try "git describe", then default.
+if test -f $tarball_version_file
+then
+    v=`cat $tarball_version_file` || v=
+    case $v in
+        *$nl*) v= ;; # reject multi-line output
+    esac
+    test "x$v" = x \
+        && echo "$0: WARNING: $tarball_version_file is damaged" 1>&2
+fi
+
+if test "x$v" != x
+then
+    : # use $v
+# Otherwise, if there is at least one git commit involving the working
+# directory, and "git describe" output looks sensible, use that to
+# derive a version string.
+elif test "`git log -1 --pretty=format:x . 2>&1`" = x \
+    && v=`git describe --abbrev=4 --match="$prefix*" HEAD 2>/dev/null \
+          || git describe --abbrev=4 HEAD 2>/dev/null` \
+    && v=`printf '%s\n' "$v" | sed "$tag_sed_script"` \
+    && case $v in
+         $prefix[0-9]*) ;;
+         *) (exit 1) ;;
+       esac
+then
+    # Is this a new git that lists number of commits since the last
+    # tag or the previous older version that did not?
+    #   Newer: v6.10-77-g0f8faeb
+    #   Older: v6.10-g0f8faeb
+    vprefix=`expr "X$v" : 'X\(.*\)-g[^-]*$'` || vprefix=$v
+    case $vprefix in
+        *-*) : git describe is probably okay three part flavor ;;
+        *)
+            : git describe is older two part flavor
+            # Recreate the number of commits and rewrite such that the
+            # result is the same as if we were using the newer version
+            # of git describe.
+            vtag=`echo "$v" | sed 's/-.*//'`
+            commit_list=`git rev-list "$vtag"..HEAD 2>/dev/null` \
+                || { commit_list=failed;
+                     echo "$0: WARNING: git rev-list failed" 1>&2; }
+            numcommits=`echo "$commit_list" | wc -l`
+            v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`;
+            test "$commit_list" = failed && v=UNKNOWN
+            ;;
+    esac
+
+    # Change the penultimate "-" to ".", for version-comparing tools.
+    # Remove the "g" to save a byte.
+    v=`echo "$v" | sed 's/-\([^-]*\)-g\([^-]*\)$/.\1-\2/'`;
+    v_from_git=1
+elif test "x$fallback" = x || git --version >/dev/null 2>&1; then
+    v=UNKNOWN
+else
+    v=$fallback
+fi
+
+v=`echo "$v" |sed "s/^$prefix//"`
+
+# Test whether to append the "-dirty" suffix only if the version
+# string we're using came from git.  I.e., skip the test if it's "UNKNOWN"
+# or if it came from .tarball-version.
+if test "x$v_from_git" != x; then
+  # Don't declare a version "dirty" merely because a timestamp has changed.
+  git update-index --refresh > /dev/null 2>&1
+
+  dirty=`exec 2>/dev/null;git diff-index --name-only HEAD` || dirty=
+  case "$dirty" in
+      '') ;;
+      *) # Append the suffix only if there isn't one already.
+          case $v in
+            *-dirty) ;;
+            *) v="$v-dirty" ;;
+          esac ;;
+  esac
+fi
+
+# Omit the trailing newline, so that m4_esyscmd can use the result directly.
+printf %s "$v"
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/grep/build-aux/gitlog-to-changelog b/src/grep/build-aux/gitlog-to-changelog
new file mode 100755
index 0000000..9ff15f6
--- /dev/null
+++ b/src/grep/build-aux/gitlog-to-changelog
@@ -0,0 +1,516 @@
+#!/bin/sh
+#! -*-perl-*-
+
+# Convert git log output to ChangeLog format.
+
+# Copyright (C) 2008-2021 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# Written by Jim Meyering
+
+# This is a prologue that allows to run a perl script as an executable
+# on systems that are compliant to a POSIX version before POSIX:2017.
+# On such systems, the usual invocation of an executable through execlp()
+# or execvp() fails with ENOEXEC if it is a script that does not start
+# with a #! line.  The script interpreter mentioned in the #! line has
+# to be /bin/sh, because on GuixSD systems that is the only program that
+# has a fixed file name.  The second line is essential for perl and is
+# also useful for editing this file in Emacs.  The next two lines below
+# are valid code in both sh and perl.  When executed by sh, they re-execute
+# the script through the perl program found in $PATH.  The '-x' option
+# is essential as well; without it, perl would re-execute the script
+# through /bin/sh.  When executed by perl, the next two lines are a no-op.
+eval 'exec perl -wSx "$0" "$@"'
+     if 0;
+
+my $VERSION = '2021-02-24 23:42'; # UTC
+# The definition above must lie within the first 8 lines in order
+# for the Emacs time-stamp write hook (at end) to update it.
+# If you change this file with Emacs, please let the write hook
+# do its job.  Otherwise, update this string manually.
+
+use strict;
+use warnings;
+use Getopt::Long;
+use POSIX qw(strftime);
+
+(my $ME = $0) =~ s|.*/||;
+
+# use File::Coda; # https://meyering.net/code/Coda/
+END {
+  defined fileno STDOUT or return;
+  close STDOUT and return;
+  warn "$ME: failed to close standard output: $!\n";
+  $? ||= 1;
+}
+
+sub usage ($)
+{
+  my ($exit_code) = @_;
+  my $STREAM = ($exit_code == 0 ? *STDOUT : *STDERR);
+  if ($exit_code != 0)
+    {
+      print $STREAM "Try '$ME --help' for more information.\n";
+    }
+  else
+    {
+      print $STREAM <<EOF;
+Usage: $ME [OPTIONS] [ARGS]
+
+Convert git log output to ChangeLog format.  If present, any ARGS
+are passed to "git log".  To avoid ARGS being parsed as options to
+$ME, they may be preceded by '--'.
+
+OPTIONS:
+
+   --amend=FILE FILE maps from an SHA1 to perl code (i.e., s/old/new/) that
+                  makes a change to SHA1's commit log text or metadata.
+   --append-dot append a dot to the first line of each commit message if
+                  there is no other punctuation or blank at the end.
+   --no-cluster never cluster commit messages under the same date/author
+                  header; the default is to cluster adjacent commit messages
+                  if their headers are the same and neither commit message
+                  contains multiple paragraphs.
+   --srcdir=DIR the root of the source tree, from which the .git/
+                  directory can be derived.
+   --since=DATE convert only the logs since DATE;
+                  the default is to convert all log entries.
+   --until=DATE convert only the logs older than DATE.
+   --ignore-matching=PAT ignore commit messages whose first lines match PAT.
+   --ignore-line=PAT ignore lines of commit messages that match PAT.
+   --format=FMT set format string for commit subject and body;
+                  see 'man git-log' for the list of format metacharacters;
+                  the default is '%s%n%b%n'
+   --strip-tab  remove one additional leading TAB from commit message lines.
+   --strip-cherry-pick  remove data inserted by "git cherry-pick";
+                  this includes the "cherry picked from commit ..." line,
+                  and the possible final "Conflicts:" paragraph.
+   --help       display this help and exit
+   --version    output version information and exit
+
+EXAMPLE:
+
+  $ME --since=2008-01-01 > ChangeLog
+  $ME -- -n 5 foo > last-5-commits-to-branch-foo
+
+SPECIAL SYNTAX:
+
+The following types of strings are interpreted specially when they appear
+at the beginning of a log message line.  They are not copied to the output.
+
+  Copyright-paperwork-exempt: Yes
+    Append the "(tiny change)" notation to the usual "date name email"
+    ChangeLog header to mark a change that does not require a copyright
+    assignment.
+  Co-authored-by: Joe User <user\@example.com>
+    List the specified name and email address on a second
+    ChangeLog header, denoting a co-author.
+  Signed-off-by: Joe User <user\@example.com>
+    These lines are simply elided.
+
+In a FILE specified via --amend, comment lines (starting with "#") are ignored.
+FILE must consist of <SHA,CODE+> pairs where SHA is a 40-byte SHA1 (alone on
+a line) referring to a commit in the current project, and CODE refers to one
+or more consecutive lines of Perl code.  Pairs must be separated by one or
+more blank line.
+
+Here is sample input for use with --amend=FILE, from coreutils:
+
+3a169f4c5d9159283548178668d2fae6fced3030
+# fix typo in title:
+s/all tile types/all file types/
+
+1379ed974f1fa39b12e2ffab18b3f7a607082202
+# Due to a bug in vc-dwim, I mis-attributed a patch by Paul to myself.
+# Change the author to be Paul.  Note the escaped "@":
+s,Jim .*>,Paul Eggert <eggert\\\@cs.ucla.edu>,
+
+EOF
+    }
+  exit $exit_code;
+}
+
+# If the string $S is a well-behaved file name, simply return it.
+# If it contains white space, quotes, etc., quote it, and return the new string.
+sub shell_quote($)
+{
+  my ($s) = @_;
+  if ($s =~ m![^\w+/.,-]!)
+    {
+      # Convert each single quote to '\''
+      $s =~ s/\'/\'\\\'\'/g;
+      # Then single quote the string.
+      $s = "'$s'";
+    }
+  return $s;
+}
+
+sub quoted_cmd(@)
+{
+  return join (' ', map {shell_quote $_} @_);
+}
+
+# Parse file F.
+# Comment lines (starting with "#") are ignored.
+# F must consist of <SHA,CODE+> pairs where SHA is a 40-byte SHA1
+# (alone on a line) referring to a commit in the current project, and
+# CODE refers to one or more consecutive lines of Perl code.
+# Pairs must be separated by one or more blank line.
+sub parse_amend_file($)
+{
+  my ($f) = @_;
+
+  open F, '<', $f
+    or die "$ME: $f: failed to open for reading: $!\n";
+
+  my $fail;
+  my $h = {};
+  my $in_code = 0;
+  my $sha;
+  while (defined (my $line = <F>))
+    {
+      $line =~ /^\#/
+        and next;
+      chomp $line;
+      $line eq ''
+        and $in_code = 0, next;
+
+      if (!$in_code)
+        {
+          $line =~ /^([[:xdigit:]]{40})$/
+            or (warn "$ME: $f:$.: invalid line; expected an SHA1\n"),
+              $fail = 1, next;
+          $sha = lc $1;
+          $in_code = 1;
+          exists $h->{$sha}
+            and (warn "$ME: $f:$.: duplicate SHA1\n"),
+              $fail = 1, next;
+        }
+      else
+        {
+          $h->{$sha} ||= '';
+          $h->{$sha} .= "$line\n";
+        }
+    }
+  close F;
+
+  $fail
+    and exit 1;
+
+  return $h;
+}
+
+# git_dir_option $SRCDIR
+#
+# From $SRCDIR, the --git-dir option to pass to git (none if $SRCDIR
+# is undef).  Return as a list (0 or 1 element).
+sub git_dir_option($)
+{
+  my ($srcdir) = @_;
+  my @res = ();
+  if (defined $srcdir)
+    {
+      my $qdir = shell_quote $srcdir;
+      my $cmd = "cd $qdir && git rev-parse --show-toplevel";
+      my $qcmd = shell_quote $cmd;
+      my $git_dir = qx($cmd);
+      defined $git_dir
+        or die "$ME: cannot run $qcmd: $!\n";
+      $? == 0
+        or die "$ME: $qcmd had unexpected exit code or signal ($?)\n";
+      chomp $git_dir;
+      push @res, "--git-dir=$git_dir/.git";
+    }
+  @res;
+}
+
+{
+  my $since_date;
+  my $until_date;
+  my $format_string = '%s%n%b%n';
+  my $amend_file;
+  my $append_dot = 0;
+  my $cluster = 1;
+  my $ignore_matching;
+  my $ignore_line;
+  my $strip_tab = 0;
+  my $strip_cherry_pick = 0;
+  my $srcdir;
+  GetOptions
+    (
+     help => sub { usage 0 },
+     version => sub { print "$ME version $VERSION\n"; exit },
+     'since=s' => \$since_date,
+     'until=s' => \$until_date,
+     'format=s' => \$format_string,
+     'amend=s' => \$amend_file,
+     'append-dot' => \$append_dot,
+     'cluster!' => \$cluster,
+     'ignore-matching=s' => \$ignore_matching,
+     'ignore-line=s' => \$ignore_line,
+     'strip-tab' => \$strip_tab,
+     'strip-cherry-pick' => \$strip_cherry_pick,
+     'srcdir=s' => \$srcdir,
+    ) or usage 1;
+
+  defined $since_date
+    and unshift @ARGV, "--since=$since_date";
+  defined $until_date
+    and unshift @ARGV, "--until=$until_date";
+
+  # This is a hash that maps an SHA1 to perl code (i.e., s/old/new/)
+  # that makes a correction in the log or attribution of that commit.
+  my $amend_code = defined $amend_file ? parse_amend_file $amend_file : {};
+
+  my @cmd = ('git',
+             git_dir_option $srcdir,
+             qw(log --log-size),
+             '--pretty=format:%H:%ct  %an  <%ae>%n%n'.$format_string, @ARGV);
+  open PIPE, '-|', @cmd
+    or die ("$ME: failed to run '". quoted_cmd (@cmd) ."': $!\n"
+            . "(Is your Git too old?  Version 1.5.1 or later is required.)\n");
+
+  my $prev_multi_paragraph;
+  my $prev_date_line = '';
+  my @prev_coauthors = ();
+  my @skipshas = ();
+  while (1)
+    {
+      defined (my $in = <PIPE>)
+        or last;
+      $in =~ /^log size (\d+)$/
+        or die "$ME:$.: Invalid line (expected log size):\n$in";
+      my $log_nbytes = $1;
+
+      my $log;
+      my $n_read = read PIPE, $log, $log_nbytes;
+      $n_read == $log_nbytes
+        or die "$ME:$.: unexpected EOF\n";
+
+      # Extract leading hash.
+      my ($sha, $rest) = split ':', $log, 2;
+      defined $sha
+        or die "$ME:$.: malformed log entry\n";
+      $sha =~ /^[[:xdigit:]]{40}$/
+        or die "$ME:$.: invalid SHA1: $sha\n";
+
+      my $skipflag = 0;
+      if (@skipshas)
+        {
+          foreach(@skipshas)
+            {
+              if ($sha =~ /^$_/)
+                {
+                  $skipflag = $_;
+                  last;
+                }
+            }
+        }
+
+      # If this commit's log requires any transformation, do it now.
+      my $code = $amend_code->{$sha};
+      if (defined $code)
+        {
+          eval 'use Safe';
+          my $s = new Safe;
+          # Put the unpreprocessed entry into "$_".
+          $_ = $rest;
+
+          # Let $code operate on it, safely.
+          my $r = $s->reval("$code")
+            or die "$ME:$.:$sha: failed to eval \"$code\":\n$@\n";
+
+          # Note that we've used this entry.
+          delete $amend_code->{$sha};
+
+          # Update $rest upon success.
+          $rest = $_;
+        }
+
+      # Remove lines inserted by "git cherry-pick".
+      if ($strip_cherry_pick)
+        {
+          $rest =~ s/^\s*Conflicts:\n.*//sm;
+          $rest =~ s/^\s*\(cherry picked from commit [\da-f]+\)\n//m;
+        }
+
+      my @line = split /[ \t]*\n/, $rest;
+      my $author_line = shift @line;
+      defined $author_line
+        or die "$ME:$.: unexpected EOF\n";
+      $author_line =~ /^(\d+)  (.*>)$/
+        or die "$ME:$.: Invalid line "
+          . "(expected date/author/email):\n$author_line\n";
+
+      # Format 'Copyright-paperwork-exempt: Yes' as a standard ChangeLog
+      # `(tiny change)' annotation.
+      my $tiny = (grep (/^(?:Copyright-paperwork-exempt|Tiny-change):\s+[Yy]es$/, @line)
+                  ? '  (tiny change)' : '');
+
+      my $date_line = sprintf "%s  %s$tiny\n",
+        strftime ("%Y-%m-%d", localtime ($1)), $2;
+
+      my @coauthors = grep /^Co-authored-by:.*$/, @line;
+      # Omit meta-data lines we've already interpreted.
+      @line = grep !/^(?:Signed-off-by:[ ].*>$
+                       |Co-authored-by:[ ]
+                       |Copyright-paperwork-exempt:[ ]
+                       |Tiny-change:[ ]
+                       )/x, @line;
+
+      # Remove leading and trailing blank lines.
+      if (@line)
+        {
+          while ($line[0] =~ /^\s*$/) { shift @line; }
+          while ($line[$#line] =~ /^\s*$/) { pop @line; }
+        }
+
+      # Handle Emacs gitmerge.el "skipped" commits.
+      # Yes, this should be controlled by an option.  So sue me.
+      if ( grep /^(; )?Merge from /, @line )
+      {
+          my $found = 0;
+          foreach (@line)
+          {
+              if (grep /^The following commit.*skipped:$/, $_)
+              {
+                  $found = 1;
+                  ## Reset at each merge to reduce chance of false matches.
+                  @skipshas = ();
+                  next;
+              }
+              if ($found && $_ =~ /^([[:xdigit:]]{7,}) [^ ]/)
+              {
+                  push ( @skipshas, $1 );
+              }
+          }
+      }
+
+      # Ignore commits that match the --ignore-matching pattern, if specified.
+      if (defined $ignore_matching && @line && $line[0] =~ /$ignore_matching/)
+        {
+          $skipflag = 1;
+        }
+      elsif ($skipflag)
+        {
+          ## Perhaps only warn if a pattern matches more than once?
+          warn "$ME: warning: skipping $sha due to $skipflag\n";
+        }
+
+      if (! $skipflag)
+        {
+          if (defined $ignore_line && @line)
+            {
+              @line = grep ! /$ignore_line/, @line;
+              while ($line[$#line] =~ /^\s*$/) { pop @line; }
+            }
+
+          # Record whether there are two or more paragraphs.
+          my $multi_paragraph = grep /^\s*$/, @line;
+
+          # Format 'Co-authored-by: A U Thor <email@example.com>' lines in
+          # standard multi-author ChangeLog format.
+          for (@coauthors)
+            {
+              s/^Co-authored-by:\s*/\t    /;
+              s/\s*</  </;
+
+              /<.*?@.*\..*>/
+                or warn "$ME: warning: missing email address for "
+                  . substr ($_, 5) . "\n";
+            }
+
+          # If clustering of commit messages has been disabled, if this header
+          # would be different from the previous date/name/etc. header,
+          # or if this or the previous entry consists of two or more paragraphs,
+          # then print the header.
+          if ( ! $cluster
+              || $date_line ne $prev_date_line
+              || "@coauthors" ne "@prev_coauthors"
+              || $multi_paragraph
+              || $prev_multi_paragraph)
+            {
+              $prev_date_line eq ''
+                or print "\n";
+              print $date_line;
+              @coauthors
+                and print join ("\n", @coauthors), "\n";
+            }
+          $prev_date_line = $date_line;
+          @prev_coauthors = @coauthors;
+          $prev_multi_paragraph = $multi_paragraph;
+
+          # If there were any lines
+          if (@line == 0)
+            {
+              warn "$ME: warning: empty commit message:\n"
+                   . "  commit $sha\n  $date_line\n";
+            }
+          else
+            {
+              if ($append_dot)
+                {
+                  # If the first line of the message has enough room, then
+                  if (length $line[0] < 72)
+                    {
+                      # append a dot if there is no other punctuation or blank
+                      # at the end.
+                      $line[0] =~ /[[:punct:]\s]$/
+                        or $line[0] .= '.';
+                    }
+                }
+
+              # Remove one additional leading TAB from each line.
+              $strip_tab
+                and map { s/^\t// } @line;
+
+              # Prefix each non-empty line with a TAB.
+              @line = map { length $_ ? "\t$_" : '' } @line;
+
+              print "\n", join ("\n", @line), "\n";
+            }
+        }
+
+      defined ($in = <PIPE>)
+        or last;
+      $in ne "\n"
+        and die "$ME:$.: unexpected line:\n$in";
+    }
+
+  close PIPE
+    or die "$ME: error closing pipe from " . quoted_cmd (@cmd) . "\n";
+  # FIXME-someday: include $PROCESS_STATUS in the diagnostic
+
+  # Complain about any unused entry in the --amend=F specified file.
+  my $fail = 0;
+  foreach my $sha (keys %$amend_code)
+    {
+      warn "$ME:$amend_file: unused entry: $sha\n";
+      $fail = 1;
+    }
+
+  exit $fail;
+}
+
+# Local Variables:
+# mode: perl
+# indent-tabs-mode: nil
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-line-limit: 50
+# time-stamp-start: "my $VERSION = '"
+# time-stamp-format: "%:y-%02m-%02d %02H:%02M"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "'; # UTC"
+# End:
diff --git a/src/grep/build-aux/gnu-web-doc-update b/src/grep/build-aux/gnu-web-doc-update
new file mode 100755
index 0000000..cc553f9
--- /dev/null
+++ b/src/grep/build-aux/gnu-web-doc-update
@@ -0,0 +1,213 @@
+#!/bin/sh
+# Run this after each non-alpha release, to update the web documentation at
+# https://www.gnu.org/software/$pkg/manual/
+
+VERSION=2021-01-09.09; # UTC
+
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+ME=$(basename "$0")
+warn() { printf '%s: %s\n' "$ME" "$*" >&2; }
+die() { warn "$*"; exit 1; }
+
+help()
+{
+  cat <<EOF
+Usage: $ME
+
+Run this script from top_srcdir (no arguments) after each non-alpha
+release, to update the web documentation at
+https://www.gnu.org/software/\$pkg/manual/
+
+This script assumes you're using git for revision control, and
+requires a .prev-version file as well as a Makefile, from which it
+extracts the version number and package name, respectively.  Also, it
+assumes all documentation is in the doc/ sub-directory.
+
+Options:
+  -C, --builddir=DIR  location of (configured) Makefile (default: .)
+  -n, --dry-run       don't actually commit anything
+  -m, --mirror        remove out of date files from document server
+  -u, --user          the name of the CVS user on Savannah
+  --help              print this help, then exit
+  --version           print version number, then exit
+
+Report bugs and patches to <bug-gnulib@gnu.org>.
+EOF
+  exit
+}
+
+version()
+{
+  year=$(echo "$VERSION" | sed 's/[^0-9].*//')
+  cat <<EOF
+$ME $VERSION
+Copyright (C) $year Free Software Foundation, Inc,
+License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+EOF
+  exit
+}
+
+# find_tool ENVVAR NAMES...
+# -------------------------
+# Search for a required program.  Use the value of ENVVAR, if set,
+# otherwise find the first of the NAMES that can be run (i.e.,
+# supports --version).  If found, set ENVVAR to the program name,
+# die otherwise.
+#
+# FIXME: code duplication, see also bootstrap.
+find_tool ()
+{
+  find_tool_envvar=$1
+  shift
+  find_tool_names=$@
+  eval "find_tool_res=\$$find_tool_envvar"
+  if test x"$find_tool_res" = x; then
+    for i
+    do
+      if ($i --version </dev/null) >/dev/null 2>&1; then
+       find_tool_res=$i
+       break
+      fi
+    done
+  else
+    find_tool_error_prefix="\$$find_tool_envvar: "
+  fi
+  test x"$find_tool_res" != x \
+    || die "one of these is required: $find_tool_names"
+  ($find_tool_res --version </dev/null) >/dev/null 2>&1 \
+    || die "${find_tool_error_prefix}cannot run $find_tool_res --version"
+  eval "$find_tool_envvar=\$find_tool_res"
+  eval "export $find_tool_envvar"
+}
+
+## ------ ##
+## Main.  ##
+## ------ ##
+
+# Requirements: everything required to bootstrap your package, plus
+# these.
+find_tool CVS cvs
+find_tool GIT git
+find_tool RSYNC rsync
+find_tool XARGS gxargs xargs
+
+builddir=.
+dryrun=
+rm_stale='echo'
+cvs_user="$USER"
+while test $# != 0
+do
+  # Handle --option=value by splitting apart and putting back on argv.
+  case $1 in
+    --*=*)
+      opt=$(echo "$1" | sed -e 's/=.*//')
+      val=$(echo "$1" | sed -e 's/[^=]*=//')
+      shift
+      set dummy "$opt" "$val" "$@"; shift
+      ;;
+  esac
+
+  case $1 in
+    --help|--version) ${1#--};;
+    -C|--builddir) shift; builddir=$1; shift ;;
+    -n|--dry-run) dryrun=echo; shift;;
+    -m|--mirror) rm_stale=''; shift;;
+    -u|--user) shift; cvs_user=$1; shift ;;
+    --*) die "unrecognized option: $1";;
+    *) break;;
+  esac
+done
+
+test $# = 0 \
+  || die "too many arguments"
+
+prev=.prev-version
+version=$(cat $prev) || die "no $prev file?"
+pkg=$(sed -n 's/^PACKAGE = \(.*\)/\1/p' $builddir/Makefile) \
+  || die "no Makefile?"
+tmp_branch=web-doc-$version-$$
+current_branch=$($GIT branch | sed -ne '/^\* /{s///;p;q;}')
+
+cleanup()
+{
+  __st=$?
+  $dryrun rm -rf "$tmp"
+  $GIT checkout "$current_branch"
+  $GIT submodule update --recursive
+  $GIT branch -d $tmp_branch
+  exit $__st
+}
+trap cleanup 0
+trap 'exit $?' 1 2 13 15
+
+# We must build using sources for which --version reports the
+# just-released version number, not some string like 7.6.18-20761.
+# That version string propagates into all documentation.
+set -e
+$GIT checkout -b $tmp_branch v$version
+$GIT submodule update --recursive
+./bootstrap
+srcdir=$(pwd)
+cd "$builddir"
+builddir=$(pwd)
+  ./config.status --recheck
+  ./config.status
+  make
+  make web-manual
+cd "$srcdir"
+set +e
+
+tmp=$(mktemp -d web-doc-update.XXXXXX) || exit 1
+( cd $tmp \
+    && $CVS -d $cvs_user@cvs.sv.gnu.org:/webcvs/$pkg co $pkg )
+$RSYNC -avP "$builddir"/doc/manual/ $tmp/$pkg/manual
+
+(
+  cd $tmp/$pkg/manual
+
+  # Add all the files.  This is simpler than trying to add only the
+  # new ones because of new directories
+  # First add non empty dirs individually
+  find . -name CVS -prune -o -type d \! -empty -print             \
+    | $XARGS -n1 --no-run-if-empty -- $dryrun $CVS add -ko
+  # Now add all files
+  find . -name CVS -prune -o -type f -print             \
+    | $XARGS --no-run-if-empty -- $dryrun $CVS add -ko
+
+  # Report/Remove stale files
+  #   excluding doc server specific files like CVS/* and .symlinks
+  if test -n "$rm_stale"; then
+    echo 'Consider the --mirror option if all of the manual is generated,' >&2
+    echo 'which will run `cvs remove` to remove stale files.' >&2
+  fi
+  { find . \( -name CVS -o -type f -name '.*' \) -prune -o -type f -print
+    (cd "$builddir"/doc/manual/ && find . -type f -print | sed p)
+  } | sort | uniq -u \
+    | $XARGS --no-run-if-empty -- ${rm_stale:-$dryrun} $CVS remove -f
+
+  $dryrun $CVS ci -m $version
+)
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "VERSION="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/grep/build-aux/gnupload b/src/grep/build-aux/gnupload
new file mode 100755
index 0000000..e7822ae
--- /dev/null
+++ b/src/grep/build-aux/gnupload
@@ -0,0 +1,480 @@
+#!/bin/sh
+# Sign files and upload them.
+
+scriptversion=2021-04-11.09; # UTC
+
+# Copyright (C) 2004-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Originally written by Alexandre Duret-Lutz <adl@gnu.org>.
+# The master copy of this file is maintained in the gnulib Git repository.
+# Please send bug reports and feature requests to bug-gnulib@gnu.org.
+
+set -e
+
+GPG=gpg
+# Choose the proper version of gpg, so as to avoid a
+# "gpg-agent is not available in this session" error
+# when gpg-agent is version 2 but gpg is still version 1.
+# FIXME-2020: remove, once all major distros ship gpg version 2 as /usr/bin/gpg
+gpg_agent_version=`(gpg-agent --version) 2>/dev/null | sed -e '2,$d' -e 's/^[^0-9]*//'`
+case "$gpg_agent_version" in
+  2.*)
+    gpg_version=`(gpg --version) 2>/dev/null | sed -e '2,$d' -e 's/^[^0-9]*//'`
+    case "$gpg_version" in
+      1.*)
+        if (type gpg2) >/dev/null 2>/dev/null; then
+          # gpg2 is present.
+          GPG=gpg2
+        else
+          # gpg2 is missing. Ubuntu users should install the package 'gnupg2'.
+          echo "WARNING: Using 'gpg', which is too old. You should install 'gpg2'." 1>&2
+        fi
+        ;;
+    esac
+    ;;
+esac
+
+GPG="${GPG} --batch --no-tty"
+conffile=.gnuploadrc
+to=
+dry_run=false
+replace=
+symlink_files=
+delete_files=
+delete_symlinks=
+collect_var=
+dbg=
+nl='
+'
+
+usage="Usage: $0 [OPTION]... [CMD] FILE... [[CMD] FILE...]
+
+Sign all FILES, and process them at the destinations specified with --to.
+If CMD is not given, it defaults to uploading.  See examples below.
+
+Commands:
+  --delete                 delete FILES from destination
+  --symlink                create symbolic links
+  --rmsymlink              remove symbolic links
+  --                       treat the remaining arguments as files to upload
+
+Options:
+  --to DEST                specify a destination DEST for FILES
+                           (multiple --to options are allowed)
+  --user NAME              sign with key NAME
+  --replace                allow replacements of existing files
+  --symlink-regex[=EXPR]   use sed script EXPR to compute symbolic link names
+  -n, --dry-run            do nothing, show what would have been done
+                           (including the constructed directive file)
+  --version                output version information and exit
+  -h, --help               print this help text and exit
+
+If --symlink-regex is given without EXPR, then the link target name
+is created by replacing the version information with '-latest', e.g.:
+  foo-1.3.4.tar.gz -> foo-latest.tar.gz
+
+Recognized destinations are:
+  alpha.gnu.org:DIRECTORY
+  savannah.gnu.org:DIRECTORY
+  savannah.nongnu.org:DIRECTORY
+  ftp.gnu.org:DIRECTORY
+                           build directive files and upload files by FTP
+  download.gnu.org.ua:{alpha|ftp}/DIRECTORY
+                           build directive files and upload files by SFTP
+  [user@]host:DIRECTORY    upload files with scp
+
+Options and commands are applied in order.  If the file $conffile exists
+in the current working directory, its contents are prepended to the
+actual command line options.  Use this to keep your defaults.  Comments
+(#) and empty lines in $conffile are allowed.
+
+<https://www.gnu.org/prep/maintain/html_node/Automated-FTP-Uploads.html>
+gives some further background.
+
+Examples:
+1. Upload foobar-1.0.tar.gz to ftp.gnu.org:
+  gnupload --to ftp.gnu.org:foobar foobar-1.0.tar.gz
+
+2. Upload foobar-1.0.tar.gz and foobar-1.0.tar.xz to ftp.gnu.org:
+  gnupload --to ftp.gnu.org:foobar foobar-1.0.tar.gz foobar-1.0.tar.xz
+
+3. Same as above, and also create symbolic links to foobar-latest.tar.*:
+  gnupload --to ftp.gnu.org:foobar \\
+           --symlink-regex \\
+           foobar-1.0.tar.gz foobar-1.0.tar.xz
+
+4. Create a symbolic link foobar-latest.tar.gz -> foobar-1.0.tar.gz
+   and likewise for the corresponding .sig file:
+  gnupload --to ftp.gnu.org:foobar \\
+           --symlink foobar-1.0.tar.gz     foobar-latest.tar.gz \\
+                     foobar-1.0.tar.gz.sig foobar-latest.tar.gz.sig
+  or (equivalent):
+  gnupload --to ftp.gnu.org:foobar \\
+           --symlink foobar-1.0.tar.gz     foobar-latest.tar.gz \\
+           --symlink foobar-1.0.tar.gz.sig foobar-latest.tar.gz.sig
+
+5. Upload foobar-0.9.90.tar.gz to two sites:
+  gnupload --to alpha.gnu.org:foobar \\
+           --to sources.redhat.com:~ftp/pub/foobar \\
+           foobar-0.9.90.tar.gz
+
+6. Delete oopsbar-0.9.91.tar.gz and upload foobar-0.9.91.tar.gz
+   (the -- terminates the list of files to delete):
+  gnupload --to alpha.gnu.org:foobar \\
+           --to sources.redhat.com:~ftp/pub/foobar \\
+           --delete oopsbar-0.9.91.tar.gz \\
+           -- foobar-0.9.91.tar.gz
+
+gnupload executes a program ncftpput to do the transfers; if you don't
+happen to have an ncftp package installed, the ncftpput-ftp script in
+the build-aux/ directory of the gnulib package
+(https://savannah.gnu.org/projects/gnulib) may serve as a replacement.
+
+Send patches and bug reports to <bug-gnulib@gnu.org>."
+
+copyright_year=`echo "$scriptversion" | sed -e 's/[^0-9].*//'`
+copyright="Copyright (C) ${copyright_year} Free Software Foundation, Inc.
+License GPLv2+: GNU GPL version 2 or later <https://gnu.org/licenses/gpl.html>.
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law."
+
+# Read local configuration file
+if test -r "$conffile"; then
+  echo "$0: Reading configuration file $conffile"
+  conf=`sed 's/#.*$//;/^$/d' "$conffile" | tr "\015$nl" '  '`
+  eval set x "$conf \"\$@\""
+  shift
+fi
+
+while test -n "$1"; do
+  case $1 in
+  -*)
+    collect_var=
+    case $1 in
+    -h | --help)
+      echo "$usage"
+      exit $?
+      ;;
+    --to)
+      if test -z "$2"; then
+        echo "$0: Missing argument for --to" 1>&2
+        exit 1
+      elif echo "$2" | grep 'ftp-upload\.gnu\.org' >/dev/null; then
+        echo "$0: Use ftp.gnu.org:PKGNAME or alpha.gnu.org:PKGNAME" >&2
+        echo "$0: for the destination, not ftp-upload.gnu.org (which" >&2
+        echo "$0:  is used for direct ftp uploads, not with gnupload)." >&2
+        echo "$0: See --help and its examples if need be." >&2
+        exit 1
+      else
+        to="$to $2"
+        shift
+      fi
+      ;;
+    --user)
+      if test -z "$2"; then
+        echo "$0: Missing argument for --user" 1>&2
+        exit 1
+      else
+        GPG="$GPG --local-user $2"
+        shift
+      fi
+      ;;
+    --delete)
+      collect_var=delete_files
+      ;;
+    --replace)
+      replace="replace: true"
+      ;;
+    --rmsymlink)
+      collect_var=delete_symlinks
+      ;;
+    --symlink-regex=*)
+      symlink_expr=`expr "$1" : '[^=]*=\(.*\)'`
+      ;;
+    --symlink-regex)
+      symlink_expr='s|-[0-9][0-9\.]*\(-[0-9][0-9]*\)\{0,1\}\.|-latest.|'
+      ;;
+    --symlink)
+      collect_var=symlink_files
+      ;;
+    -n | --dry-run)
+      dry_run=:
+      ;;
+    --version)
+      echo "gnupload $scriptversion"
+      echo "$copyright"
+      exit 0
+      ;;
+    --)
+      shift
+      break
+      ;;
+    -*)
+      echo "$0: Unknown option '$1', try '$0 --help'" 1>&2
+      exit 1
+      ;;
+    esac
+    ;;
+  *)
+    if test -z "$collect_var"; then
+      break
+    else
+      eval "$collect_var=\"\$$collect_var $1\""
+    fi
+    ;;
+  esac
+  shift
+done
+
+dprint()
+{
+  echo "Running $* ..."
+}
+
+if $dry_run; then
+  dbg=dprint
+fi
+
+if test -z "$to"; then
+  echo "$0: Missing destination sites" >&2
+  exit 1
+fi
+
+if test -n "$symlink_files"; then
+  x=`echo "$symlink_files" | sed 's/[^ ]//g;s/  //g'`
+  if test -n "$x"; then
+    echo "$0: Odd number of symlink arguments" >&2
+    exit 1
+  fi
+fi
+
+if test $# = 0; then
+  if test -z "${symlink_files}${delete_files}${delete_symlinks}"; then
+    echo "$0: No file to upload" 1>&2
+    exit 1
+  fi
+else
+  # Make sure all files exist.  We don't want to ask
+  # for the passphrase if the script will fail.
+  for file
+  do
+    if test ! -f $file; then
+      echo "$0: Cannot find '$file'" 1>&2
+      exit 1
+    elif test -n "$symlink_expr"; then
+      linkname=`echo $file | sed "$symlink_expr"`
+      if test -z "$linkname"; then
+        echo "$0: symlink expression produces empty results" >&2
+        exit 1
+      elif test "$linkname" = $file; then
+        echo "$0: symlink expression does not alter file name" >&2
+        exit 1
+      fi
+    fi
+  done
+fi
+
+# Make sure passphrase is not exported in the environment.
+unset passphrase
+unset passphrase_fd_0
+GNUPGHOME=${GNUPGHOME:-$HOME/.gnupg}
+
+# Reset PATH to be sure that echo is a built-in.  We will later use
+# 'echo $passphrase' to output the passphrase, so it is important that
+# it is a built-in (third-party programs tend to appear in 'ps'
+# listings with their arguments...).
+# Remember this script runs with 'set -e', so if echo is not built-in
+# it will exit now.
+if $dry_run || grep -q "^use-agent" $GNUPGHOME/gpg.conf; then :; else
+  PATH=/empty echo -n "Enter GPG passphrase: "
+  stty -echo
+  read -r passphrase
+  stty echo
+  echo
+  passphrase_fd_0="--passphrase-fd 0"
+fi
+
+if test $# -ne 0; then
+  for file
+  do
+    echo "Signing $file ..."
+    rm -f $file.sig
+    echo "$passphrase" | $dbg $GPG $passphrase_fd_0 -ba -o $file.sig $file
+  done
+fi
+
+
+# mkdirective DESTDIR BASE FILE STMT
+# Arguments: See upload, below
+mkdirective ()
+{
+  stmt="$4"
+  if test -n "$3"; then
+    stmt="
+filename: $3$stmt"
+  fi
+
+  cat >${2}.directive<<EOF
+version: 1.2
+directory: $1
+comment: gnupload v. $scriptversion$stmt
+EOF
+  if $dry_run; then
+    echo "File ${2}.directive:"
+    cat ${2}.directive
+    echo "File ${2}.directive:" | sed 's/./-/g'
+  fi
+}
+
+mksymlink ()
+{
+  while test $# -ne 0
+  do
+    echo "symlink: $1 $2"
+    shift
+    shift
+  done
+}
+
+# upload DEST DESTDIR BASE FILE STMT FILES
+# Arguments:
+#  DEST     Destination site;
+#  DESTDIR  Destination directory;
+#  BASE     Base name for the directive file;
+#  FILE     Name of the file to distribute (may be empty);
+#  STMT     Additional statements for the directive file;
+#  FILES    List of files to upload.
+upload ()
+{
+  dest=$1
+  destdir=$2
+  base=$3
+  file=$4
+  stmt=$5
+  files=$6
+
+  rm -f $base.directive $base.directive.asc
+  case $dest in
+    alpha.gnu.org:*)
+      mkdirective "$destdir" "$base" "$file" "$stmt"
+      echo "$passphrase" | $dbg $GPG $passphrase_fd_0 --clearsign $base.directive
+      $dbg ncftpput ftp-upload.gnu.org /incoming/alpha $files $base.directive.asc
+      ;;
+    ftp.gnu.org:*)
+      mkdirective "$destdir" "$base" "$file" "$stmt"
+      echo "$passphrase" | $dbg $GPG $passphrase_fd_0 --clearsign $base.directive
+      $dbg ncftpput ftp-upload.gnu.org /incoming/ftp $files $base.directive.asc
+      ;;
+    savannah.gnu.org:*)
+      if test -z "$files"; then
+        echo "$0: warning: standalone directives not applicable for $dest" >&2
+      fi
+      $dbg ncftpput savannah.gnu.org /incoming/savannah/$destdir $files
+      ;;
+    savannah.nongnu.org:*)
+      if test -z "$files"; then
+        echo "$0: warning: standalone directives not applicable for $dest" >&2
+      fi
+      $dbg ncftpput savannah.nongnu.org /incoming/savannah/$destdir $files
+      ;;
+    download.gnu.org.ua:alpha/*|download.gnu.org.ua:ftp/*)
+      destdir_p1=`echo "$destdir" | sed 's,^[^/]*/,,'`
+      destdir_topdir=`echo "$destdir" | sed 's,/.*,,'`
+      mkdirective "$destdir_p1" "$base" "$file" "$stmt"
+      echo "$passphrase" | $dbg $GPG $passphrase_fd_0 --clearsign $base.directive
+      for f in $files $base.directive.asc
+      do
+        echo put $f
+      done | $dbg sftp -b - puszcza.gnu.org.ua:/incoming/$destdir_topdir
+      ;;
+    /*)
+      dest_host=`echo "$dest" | sed 's,:.*,,'`
+      mkdirective "$destdir" "$base" "$file" "$stmt"
+      echo "$passphrase" | $dbg $GPG $passphrase_fd_0 --clearsign $base.directive
+      $dbg cp $files $base.directive.asc $dest_host
+      ;;
+    *)
+      if test -z "$files"; then
+        echo "$0: warning: standalone directives not applicable for $dest" >&2
+      fi
+      $dbg scp $files $dest
+      ;;
+  esac
+  rm -f $base.directive $base.directive.asc
+}
+
+#####
+# Process any standalone directives
+stmt=
+if test -n "$symlink_files"; then
+  stmt="$stmt
+`mksymlink $symlink_files`"
+fi
+
+for file in $delete_files
+do
+  stmt="$stmt
+archive: $file"
+done
+
+for file in $delete_symlinks
+do
+  stmt="$stmt
+rmsymlink: $file"
+done
+
+if test -n "$stmt"; then
+  for dest in $to
+  do
+    destdir=`echo $dest | sed 's/[^:]*://'`
+    upload "$dest" "$destdir" "`hostname`-$$" "" "$stmt"
+  done
+fi
+
+# Process actual uploads
+for dest in $to
+do
+  for file
+  do
+    echo "Uploading $file to $dest ..."
+    stmt=
+    #
+    # allowing file replacement is all or nothing.
+    if test -n "$replace"; then stmt="$stmt
+$replace"
+    fi
+    #
+    files="$file $file.sig"
+    destdir=`echo $dest | sed 's/[^:]*://'`
+    if test -n "$symlink_expr"; then
+      linkname=`echo $file | sed "$symlink_expr"`
+      stmt="$stmt
+symlink: $file $linkname
+symlink: $file.sig $linkname.sig"
+    fi
+    upload "$dest" "$destdir" "$file" "$file" "$stmt" "$files"
+  done
+done
+
+exit 0
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/grep/build-aux/install-sh b/src/grep/build-aux/install-sh
new file mode 100755
index 0000000..ec298b5
--- /dev/null
+++ b/src/grep/build-aux/install-sh
@@ -0,0 +1,541 @@
+#!/bin/sh
+# install - install a program, script, or datafile
+
+scriptversion=2020-11-14.01; # UTC
+
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
+#
+# Copyright (C) 1994 X Consortium
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# 'make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.
+
+tab='	'
+nl='
+'
+IFS=" $tab$nl"
+
+# Set DOITPROG to "echo" to test this script.
+
+doit=${DOITPROG-}
+doit_exec=${doit:-exec}
+
+# Put in absolute file names if you don't have them in your path;
+# or use environment vars.
+
+chgrpprog=${CHGRPPROG-chgrp}
+chmodprog=${CHMODPROG-chmod}
+chownprog=${CHOWNPROG-chown}
+cmpprog=${CMPPROG-cmp}
+cpprog=${CPPROG-cp}
+mkdirprog=${MKDIRPROG-mkdir}
+mvprog=${MVPROG-mv}
+rmprog=${RMPROG-rm}
+stripprog=${STRIPPROG-strip}
+
+posix_mkdir=
+
+# Desired mode of installed file.
+mode=0755
+
+# Create dirs (including intermediate dirs) using mode 755.
+# This is like GNU 'install' as of coreutils 8.32 (2020).
+mkdir_umask=22
+
+backupsuffix=
+chgrpcmd=
+chmodcmd=$chmodprog
+chowncmd=
+mvcmd=$mvprog
+rmcmd="$rmprog -f"
+stripcmd=
+
+src=
+dst=
+dir_arg=
+dst_arg=
+
+copy_on_change=false
+is_target_a_directory=possibly
+
+usage="\
+Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
+   or: $0 [OPTION]... SRCFILES... DIRECTORY
+   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
+   or: $0 [OPTION]... -d DIRECTORIES...
+
+In the 1st form, copy SRCFILE to DSTFILE.
+In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
+In the 4th, create DIRECTORIES.
+
+Options:
+     --help     display this help and exit.
+     --version  display version info and exit.
+
+  -c            (ignored)
+  -C            install only if different (preserve data modification time)
+  -d            create directories instead of installing files.
+  -g GROUP      $chgrpprog installed files to GROUP.
+  -m MODE       $chmodprog installed files to MODE.
+  -o USER       $chownprog installed files to USER.
+  -p            pass -p to $cpprog.
+  -s            $stripprog installed files.
+  -S SUFFIX     attempt to back up existing files, with suffix SUFFIX.
+  -t DIRECTORY  install into DIRECTORY.
+  -T            report an error if DSTFILE is a directory.
+
+Environment variables override the default commands:
+  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
+  RMPROG STRIPPROG
+
+By default, rm is invoked with -f; when overridden with RMPROG,
+it's up to you to specify -f if you want it.
+
+If -S is not specified, no backups are attempted.
+
+Email bug reports to bug-automake@gnu.org.
+Automake home page: https://www.gnu.org/software/automake/
+"
+
+while test $# -ne 0; do
+  case $1 in
+    -c) ;;
+
+    -C) copy_on_change=true;;
+
+    -d) dir_arg=true;;
+
+    -g) chgrpcmd="$chgrpprog $2"
+        shift;;
+
+    --help) echo "$usage"; exit $?;;
+
+    -m) mode=$2
+        case $mode in
+          *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
+            echo "$0: invalid mode: $mode" >&2
+            exit 1;;
+        esac
+        shift;;
+
+    -o) chowncmd="$chownprog $2"
+        shift;;
+
+    -p) cpprog="$cpprog -p";;
+
+    -s) stripcmd=$stripprog;;
+
+    -S) backupsuffix="$2"
+        shift;;
+
+    -t)
+        is_target_a_directory=always
+        dst_arg=$2
+        # Protect names problematic for 'test' and other utilities.
+        case $dst_arg in
+          -* | [=\(\)!]) dst_arg=./$dst_arg;;
+        esac
+        shift;;
+
+    -T) is_target_a_directory=never;;
+
+    --version) echo "$0 $scriptversion"; exit $?;;
+
+    --) shift
+        break;;
+
+    -*) echo "$0: invalid option: $1" >&2
+        exit 1;;
+
+    *)  break;;
+  esac
+  shift
+done
+
+# We allow the use of options -d and -T together, by making -d
+# take the precedence; this is for compatibility with GNU install.
+
+if test -n "$dir_arg"; then
+  if test -n "$dst_arg"; then
+    echo "$0: target directory not allowed when installing a directory." >&2
+    exit 1
+  fi
+fi
+
+if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
+  # When -d is used, all remaining arguments are directories to create.
+  # When -t is used, the destination is already specified.
+  # Otherwise, the last argument is the destination.  Remove it from $@.
+  for arg
+  do
+    if test -n "$dst_arg"; then
+      # $@ is not empty: it contains at least $arg.
+      set fnord "$@" "$dst_arg"
+      shift # fnord
+    fi
+    shift # arg
+    dst_arg=$arg
+    # Protect names problematic for 'test' and other utilities.
+    case $dst_arg in
+      -* | [=\(\)!]) dst_arg=./$dst_arg;;
+    esac
+  done
+fi
+
+if test $# -eq 0; then
+  if test -z "$dir_arg"; then
+    echo "$0: no input file specified." >&2
+    exit 1
+  fi
+  # It's OK to call 'install-sh -d' without argument.
+  # This can happen when creating conditional directories.
+  exit 0
+fi
+
+if test -z "$dir_arg"; then
+  if test $# -gt 1 || test "$is_target_a_directory" = always; then
+    if test ! -d "$dst_arg"; then
+      echo "$0: $dst_arg: Is not a directory." >&2
+      exit 1
+    fi
+  fi
+fi
+
+if test -z "$dir_arg"; then
+  do_exit='(exit $ret); exit $ret'
+  trap "ret=129; $do_exit" 1
+  trap "ret=130; $do_exit" 2
+  trap "ret=141; $do_exit" 13
+  trap "ret=143; $do_exit" 15
+
+  # Set umask so as not to create temps with too-generous modes.
+  # However, 'strip' requires both read and write access to temps.
+  case $mode in
+    # Optimize common cases.
+    *644) cp_umask=133;;
+    *755) cp_umask=22;;
+
+    *[0-7])
+      if test -z "$stripcmd"; then
+        u_plus_rw=
+      else
+        u_plus_rw='% 200'
+      fi
+      cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
+    *)
+      if test -z "$stripcmd"; then
+        u_plus_rw=
+      else
+        u_plus_rw=,u+rw
+      fi
+      cp_umask=$mode$u_plus_rw;;
+  esac
+fi
+
+for src
+do
+  # Protect names problematic for 'test' and other utilities.
+  case $src in
+    -* | [=\(\)!]) src=./$src;;
+  esac
+
+  if test -n "$dir_arg"; then
+    dst=$src
+    dstdir=$dst
+    test -d "$dstdir"
+    dstdir_status=$?
+    # Don't chown directories that already exist.
+    if test $dstdir_status = 0; then
+      chowncmd=""
+    fi
+  else
+
+    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
+    # might cause directories to be created, which would be especially bad
+    # if $src (and thus $dsttmp) contains '*'.
+    if test ! -f "$src" && test ! -d "$src"; then
+      echo "$0: $src does not exist." >&2
+      exit 1
+    fi
+
+    if test -z "$dst_arg"; then
+      echo "$0: no destination specified." >&2
+      exit 1
+    fi
+    dst=$dst_arg
+
+    # If destination is a directory, append the input filename.
+    if test -d "$dst"; then
+      if test "$is_target_a_directory" = never; then
+        echo "$0: $dst_arg: Is a directory" >&2
+        exit 1
+      fi
+      dstdir=$dst
+      dstbase=`basename "$src"`
+      case $dst in
+	*/) dst=$dst$dstbase;;
+	*)  dst=$dst/$dstbase;;
+      esac
+      dstdir_status=0
+    else
+      dstdir=`dirname "$dst"`
+      test -d "$dstdir"
+      dstdir_status=$?
+    fi
+  fi
+
+  case $dstdir in
+    */) dstdirslash=$dstdir;;
+    *)  dstdirslash=$dstdir/;;
+  esac
+
+  obsolete_mkdir_used=false
+
+  if test $dstdir_status != 0; then
+    case $posix_mkdir in
+      '')
+        # With -d, create the new directory with the user-specified mode.
+        # Otherwise, rely on $mkdir_umask.
+        if test -n "$dir_arg"; then
+          mkdir_mode=-m$mode
+        else
+          mkdir_mode=
+        fi
+
+        posix_mkdir=false
+	# The $RANDOM variable is not portable (e.g., dash).  Use it
+	# here however when possible just to lower collision chance.
+	tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+
+	trap '
+	  ret=$?
+	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null
+	  exit $ret
+	' 0
+
+	# Because "mkdir -p" follows existing symlinks and we likely work
+	# directly in world-writeable /tmp, make sure that the '$tmpdir'
+	# directory is successfully created first before we actually test
+	# 'mkdir -p'.
+	if (umask $mkdir_umask &&
+	    $mkdirprog $mkdir_mode "$tmpdir" &&
+	    exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1
+	then
+	  if test -z "$dir_arg" || {
+	       # Check for POSIX incompatibilities with -m.
+	       # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+	       # other-writable bit of parent directory when it shouldn't.
+	       # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+	       test_tmpdir="$tmpdir/a"
+	       ls_ld_tmpdir=`ls -ld "$test_tmpdir"`
+	       case $ls_ld_tmpdir in
+		 d????-?r-*) different_mode=700;;
+		 d????-?--*) different_mode=755;;
+		 *) false;;
+	       esac &&
+	       $mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
+		 ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"`
+		 test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+	       }
+	     }
+	  then posix_mkdir=:
+	  fi
+	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
+	else
+	  # Remove any dirs left behind by ancient mkdir implementations.
+	  rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null
+	fi
+	trap '' 0;;
+    esac
+
+    if
+      $posix_mkdir && (
+        umask $mkdir_umask &&
+        $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
+      )
+    then :
+    else
+
+      # mkdir does not conform to POSIX,
+      # or it failed possibly due to a race condition.  Create the
+      # directory the slow way, step by step, checking for races as we go.
+
+      case $dstdir in
+        /*) prefix='/';;
+        [-=\(\)!]*) prefix='./';;
+        *)  prefix='';;
+      esac
+
+      oIFS=$IFS
+      IFS=/
+      set -f
+      set fnord $dstdir
+      shift
+      set +f
+      IFS=$oIFS
+
+      prefixes=
+
+      for d
+      do
+        test X"$d" = X && continue
+
+        prefix=$prefix$d
+        if test -d "$prefix"; then
+          prefixes=
+        else
+          if $posix_mkdir; then
+            (umask $mkdir_umask &&
+             $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
+            # Don't fail if two instances are running concurrently.
+            test -d "$prefix" || exit 1
+          else
+            case $prefix in
+              *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
+              *) qprefix=$prefix;;
+            esac
+            prefixes="$prefixes '$qprefix'"
+          fi
+        fi
+        prefix=$prefix/
+      done
+
+      if test -n "$prefixes"; then
+        # Don't fail if two instances are running concurrently.
+        (umask $mkdir_umask &&
+         eval "\$doit_exec \$mkdirprog $prefixes") ||
+          test -d "$dstdir" || exit 1
+        obsolete_mkdir_used=true
+      fi
+    fi
+  fi
+
+  if test -n "$dir_arg"; then
+    { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
+    { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
+      test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
+  else
+
+    # Make a couple of temp file names in the proper directory.
+    dsttmp=${dstdirslash}_inst.$$_
+    rmtmp=${dstdirslash}_rm.$$_
+
+    # Trap to clean up those temp files at exit.
+    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
+
+    # Copy the file name to the temp name.
+    (umask $cp_umask &&
+     { test -z "$stripcmd" || {
+	 # Create $dsttmp read-write so that cp doesn't create it read-only,
+	 # which would cause strip to fail.
+	 if test -z "$doit"; then
+	   : >"$dsttmp" # No need to fork-exec 'touch'.
+	 else
+	   $doit touch "$dsttmp"
+	 fi
+       }
+     } &&
+     $doit_exec $cpprog "$src" "$dsttmp") &&
+
+    # and set any options; do chmod last to preserve setuid bits.
+    #
+    # If any of these fail, we abort the whole thing.  If we want to
+    # ignore errors from any of these, just make sure not to ignore
+    # errors from the above "$doit $cpprog $src $dsttmp" command.
+    #
+    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
+    { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
+    { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
+
+    # If -C, don't bother to copy if it wouldn't change the file.
+    if $copy_on_change &&
+       old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
+       new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
+       set -f &&
+       set X $old && old=:$2:$4:$5:$6 &&
+       set X $new && new=:$2:$4:$5:$6 &&
+       set +f &&
+       test "$old" = "$new" &&
+       $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
+    then
+      rm -f "$dsttmp"
+    else
+      # If $backupsuffix is set, and the file being installed
+      # already exists, attempt a backup.  Don't worry if it fails,
+      # e.g., if mv doesn't support -f.
+      if test -n "$backupsuffix" && test -f "$dst"; then
+        $doit $mvcmd -f "$dst" "$dst$backupsuffix" 2>/dev/null
+      fi
+
+      # Rename the file to the real destination.
+      $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
+
+      # The rename failed, perhaps because mv can't rename something else
+      # to itself, or perhaps because mv is so ancient that it does not
+      # support -f.
+      {
+        # Now remove or move aside any old file at destination location.
+        # We try this two ways since rm can't unlink itself on some
+        # systems and the destination file might be busy for other
+        # reasons.  In this case, the final cleanup might fail but the new
+        # file should still install successfully.
+        {
+          test ! -f "$dst" ||
+          $doit $rmcmd "$dst" 2>/dev/null ||
+          { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
+            { $doit $rmcmd "$rmtmp" 2>/dev/null; :; }
+          } ||
+          { echo "$0: cannot unlink or rename $dst" >&2
+            (exit 1); exit 1
+          }
+        } &&
+
+        # Now rename the file to the real destination.
+        $doit $mvcmd "$dsttmp" "$dst"
+      }
+    fi || exit 1
+
+    trap '' 0
+  fi
+done
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/grep/build-aux/mdate-sh b/src/grep/build-aux/mdate-sh
new file mode 100755
index 0000000..e6d572d
--- /dev/null
+++ b/src/grep/build-aux/mdate-sh
@@ -0,0 +1,228 @@
+#!/bin/sh
+# Get modification time of a file or directory and pretty-print it.
+
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1995-2021 Free Software Foundation, Inc.
+# written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+fi
+
+case $1 in
+  '')
+     echo "$0: No file.  Try '$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: mdate-sh [--help] [--version] FILE
+
+Pretty-print the modification day of FILE, in the format:
+1 January 1970
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "mdate-sh $scriptversion"
+    exit $?
+    ;;
+esac
+
+error ()
+{
+  echo "$0: $1" >&2
+  exit 1
+}
+
+
+# Prevent date giving response in another language.
+LANG=C
+export LANG
+LC_ALL=C
+export LC_ALL
+LC_TIME=C
+export LC_TIME
+
+# Use UTC to get reproducible result.
+TZ=UTC0
+export TZ
+
+# GNU ls changes its time format in response to the TIME_STYLE
+# variable.  Since we cannot assume 'unset' works, revert this
+# variable to its documented default.
+if test "${TIME_STYLE+set}" = set; then
+  TIME_STYLE=posix-long-iso
+  export TIME_STYLE
+fi
+
+save_arg1=$1
+
+# Find out how to get the extended ls output of a file or directory.
+if ls -L /dev/null 1>/dev/null 2>&1; then
+  ls_command='ls -L -l -d'
+else
+  ls_command='ls -l -d'
+fi
+# Avoid user/group names that might have spaces, when possible.
+if ls -n /dev/null 1>/dev/null 2>&1; then
+  ls_command="$ls_command -n"
+fi
+
+# A 'ls -l' line looks as follows on OS/2.
+#  drwxrwx---        0 Aug 11  2001 foo
+# This differs from Unix, which adds ownership information.
+#  drwxrwx---   2 root  root      4096 Aug 11  2001 foo
+#
+# To find the date, we split the line on spaces and iterate on words
+# until we find a month.  This cannot work with files whose owner is a
+# user named "Jan", or "Feb", etc.  However, it's unlikely that '/'
+# will be owned by a user whose name is a month.  So we first look at
+# the extended ls output of the root directory to decide how many
+# words should be skipped to get the date.
+
+# On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below.
+set x`$ls_command /`
+
+# Find which argument is the month.
+month=
+command=
+until test $month
+do
+  test $# -gt 0 || error "failed parsing '$ls_command /' output"
+  shift
+  # Add another shift to the command.
+  command="$command shift;"
+  case $1 in
+    Jan) month=January; nummonth=1;;
+    Feb) month=February; nummonth=2;;
+    Mar) month=March; nummonth=3;;
+    Apr) month=April; nummonth=4;;
+    May) month=May; nummonth=5;;
+    Jun) month=June; nummonth=6;;
+    Jul) month=July; nummonth=7;;
+    Aug) month=August; nummonth=8;;
+    Sep) month=September; nummonth=9;;
+    Oct) month=October; nummonth=10;;
+    Nov) month=November; nummonth=11;;
+    Dec) month=December; nummonth=12;;
+  esac
+done
+
+test -n "$month" || error "failed parsing '$ls_command /' output"
+
+# Get the extended ls output of the file or directory.
+set dummy x`eval "$ls_command \"\\\$save_arg1\""`
+
+# Remove all preceding arguments
+eval $command
+
+# Because of the dummy argument above, month is in $2.
+#
+# On a POSIX system, we should have
+#
+# $# = 5
+# $1 = file size
+# $2 = month
+# $3 = day
+# $4 = year or time
+# $5 = filename
+#
+# On Darwin 7.7.0 and 7.6.0, we have
+#
+# $# = 4
+# $1 = day
+# $2 = month
+# $3 = year or time
+# $4 = filename
+
+# Get the month.
+case $2 in
+  Jan) month=January; nummonth=1;;
+  Feb) month=February; nummonth=2;;
+  Mar) month=March; nummonth=3;;
+  Apr) month=April; nummonth=4;;
+  May) month=May; nummonth=5;;
+  Jun) month=June; nummonth=6;;
+  Jul) month=July; nummonth=7;;
+  Aug) month=August; nummonth=8;;
+  Sep) month=September; nummonth=9;;
+  Oct) month=October; nummonth=10;;
+  Nov) month=November; nummonth=11;;
+  Dec) month=December; nummonth=12;;
+esac
+
+case $3 in
+  ???*) day=$1;;
+  *) day=$3; shift;;
+esac
+
+# Here we have to deal with the problem that the ls output gives either
+# the time of day or the year.
+case $3 in
+  *:*) set `date`; eval year=\$$#
+       case $2 in
+	 Jan) nummonthtod=1;;
+	 Feb) nummonthtod=2;;
+	 Mar) nummonthtod=3;;
+	 Apr) nummonthtod=4;;
+	 May) nummonthtod=5;;
+	 Jun) nummonthtod=6;;
+	 Jul) nummonthtod=7;;
+	 Aug) nummonthtod=8;;
+	 Sep) nummonthtod=9;;
+	 Oct) nummonthtod=10;;
+	 Nov) nummonthtod=11;;
+	 Dec) nummonthtod=12;;
+       esac
+       # For the first six month of the year the time notation can also
+       # be used for files modified in the last year.
+       if (expr $nummonth \> $nummonthtod) > /dev/null;
+       then
+	 year=`expr $year - 1`
+       fi;;
+  *) year=$3;;
+esac
+
+# The result.
+echo $day $month $year
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/grep/build-aux/missing b/src/grep/build-aux/missing
new file mode 100755
index 0000000..1fe1611
--- /dev/null
+++ b/src/grep/build-aux/missing
@@ -0,0 +1,215 @@
+#! /bin/sh
+# Common wrapper for a few potentially missing GNU programs.
+
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1996-2021 Free Software Foundation, Inc.
+# Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+if test $# -eq 0; then
+  echo 1>&2 "Try '$0 --help' for more information"
+  exit 1
+fi
+
+case $1 in
+
+  --is-lightweight)
+    # Used by our autoconf macros to check whether the available missing
+    # script is modern enough.
+    exit 0
+    ;;
+
+  --run)
+    # Back-compat with the calling convention used by older automake.
+    shift
+    ;;
+
+  -h|--h|--he|--hel|--help)
+    echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Run 'PROGRAM [ARGUMENT]...', returning a proper advice when this fails due
+to PROGRAM being missing or too old.
+
+Options:
+  -h, --help      display this help and exit
+  -v, --version   output version information and exit
+
+Supported PROGRAM values:
+  aclocal   autoconf  autoheader   autom4te  automake  makeinfo
+  bison     yacc      flex         lex       help2man
+
+Version suffixes to PROGRAM as well as the prefixes 'gnu-', 'gnu', and
+'g' are ignored when checking the name.
+
+Send bug reports to <bug-automake@gnu.org>."
+    exit $?
+    ;;
+
+  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+    echo "missing $scriptversion (GNU Automake)"
+    exit $?
+    ;;
+
+  -*)
+    echo 1>&2 "$0: unknown '$1' option"
+    echo 1>&2 "Try '$0 --help' for more information"
+    exit 1
+    ;;
+
+esac
+
+# Run the given program, remember its exit status.
+"$@"; st=$?
+
+# If it succeeded, we are done.
+test $st -eq 0 && exit 0
+
+# Also exit now if we it failed (or wasn't found), and '--version' was
+# passed; such an option is passed most likely to detect whether the
+# program is present and works.
+case $2 in --version|--help) exit $st;; esac
+
+# Exit code 63 means version mismatch.  This often happens when the user
+# tries to use an ancient version of a tool on a file that requires a
+# minimum version.
+if test $st -eq 63; then
+  msg="probably too old"
+elif test $st -eq 127; then
+  # Program was missing.
+  msg="missing on your system"
+else
+  # Program was found and executed, but failed.  Give up.
+  exit $st
+fi
+
+perl_URL=https://www.perl.org/
+flex_URL=https://github.com/westes/flex
+gnu_software_URL=https://www.gnu.org/software
+
+program_details ()
+{
+  case $1 in
+    aclocal|automake)
+      echo "The '$1' program is part of the GNU Automake package:"
+      echo "<$gnu_software_URL/automake>"
+      echo "It also requires GNU Autoconf, GNU m4 and Perl in order to run:"
+      echo "<$gnu_software_URL/autoconf>"
+      echo "<$gnu_software_URL/m4/>"
+      echo "<$perl_URL>"
+      ;;
+    autoconf|autom4te|autoheader)
+      echo "The '$1' program is part of the GNU Autoconf package:"
+      echo "<$gnu_software_URL/autoconf/>"
+      echo "It also requires GNU m4 and Perl in order to run:"
+      echo "<$gnu_software_URL/m4/>"
+      echo "<$perl_URL>"
+      ;;
+  esac
+}
+
+give_advice ()
+{
+  # Normalize program name to check for.
+  normalized_program=`echo "$1" | sed '
+    s/^gnu-//; t
+    s/^gnu//; t
+    s/^g//; t'`
+
+  printf '%s\n' "'$1' is $msg."
+
+  configure_deps="'configure.ac' or m4 files included by 'configure.ac'"
+  case $normalized_program in
+    autoconf*)
+      echo "You should only need it if you modified 'configure.ac',"
+      echo "or m4 files included by it."
+      program_details 'autoconf'
+      ;;
+    autoheader*)
+      echo "You should only need it if you modified 'acconfig.h' or"
+      echo "$configure_deps."
+      program_details 'autoheader'
+      ;;
+    automake*)
+      echo "You should only need it if you modified 'Makefile.am' or"
+      echo "$configure_deps."
+      program_details 'automake'
+      ;;
+    aclocal*)
+      echo "You should only need it if you modified 'acinclude.m4' or"
+      echo "$configure_deps."
+      program_details 'aclocal'
+      ;;
+   autom4te*)
+      echo "You might have modified some maintainer files that require"
+      echo "the 'autom4te' program to be rebuilt."
+      program_details 'autom4te'
+      ;;
+    bison*|yacc*)
+      echo "You should only need it if you modified a '.y' file."
+      echo "You may want to install the GNU Bison package:"
+      echo "<$gnu_software_URL/bison/>"
+      ;;
+    lex*|flex*)
+      echo "You should only need it if you modified a '.l' file."
+      echo "You may want to install the Fast Lexical Analyzer package:"
+      echo "<$flex_URL>"
+      ;;
+    help2man*)
+      echo "You should only need it if you modified a dependency" \
+           "of a man page."
+      echo "You may want to install the GNU Help2man package:"
+      echo "<$gnu_software_URL/help2man/>"
+    ;;
+    makeinfo*)
+      echo "You should only need it if you modified a '.texi' file, or"
+      echo "any other file indirectly affecting the aspect of the manual."
+      echo "You might want to install the Texinfo package:"
+      echo "<$gnu_software_URL/texinfo/>"
+      echo "The spurious makeinfo call might also be the consequence of"
+      echo "using a buggy 'make' (AIX, DU, IRIX), in which case you might"
+      echo "want to install GNU make:"
+      echo "<$gnu_software_URL/make/>"
+      ;;
+    *)
+      echo "You might have modified some files without having the proper"
+      echo "tools for further handling them.  Check the 'README' file, it"
+      echo "often tells you about the needed prerequisites for installing"
+      echo "this package.  You may also peek at any GNU archive site, in"
+      echo "case some other package contains this missing '$1' program."
+      ;;
+  esac
+}
+
+give_advice "$1" | sed -e '1s/^/WARNING: /' \
+                       -e '2,$s/^/         /' >&2
+
+# Propagate the correct exit status (expected to be 127 for a program
+# not found, 63 for a program that failed due to version mismatch).
+exit $st
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/grep/build-aux/test-driver b/src/grep/build-aux/test-driver
new file mode 100755
index 0000000..be73b80
--- /dev/null
+++ b/src/grep/build-aux/test-driver
@@ -0,0 +1,153 @@
+#! /bin/sh
+# test-driver - basic testsuite driver script.
+
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+# Make unconditional expansion of undefined variables an error.  This
+# helps a lot in preventing typo-related bugs.
+set -u
+
+usage_error ()
+{
+  echo "$0: $*" >&2
+  print_usage >&2
+  exit 2
+}
+
+print_usage ()
+{
+  cat <<END
+Usage:
+  test-driver --test-name NAME --log-file PATH --trs-file PATH
+              [--expect-failure {yes|no}] [--color-tests {yes|no}]
+              [--enable-hard-errors {yes|no}] [--]
+              TEST-SCRIPT [TEST-SCRIPT-ARGUMENTS]
+
+The '--test-name', '--log-file' and '--trs-file' options are mandatory.
+See the GNU Automake documentation for information.
+END
+}
+
+test_name= # Used for reporting.
+log_file=  # Where to save the output of the test script.
+trs_file=  # Where to save the metadata of the test run.
+expect_failure=no
+color_tests=no
+enable_hard_errors=yes
+while test $# -gt 0; do
+  case $1 in
+  --help) print_usage; exit $?;;
+  --version) echo "test-driver $scriptversion"; exit $?;;
+  --test-name) test_name=$2; shift;;
+  --log-file) log_file=$2; shift;;
+  --trs-file) trs_file=$2; shift;;
+  --color-tests) color_tests=$2; shift;;
+  --expect-failure) expect_failure=$2; shift;;
+  --enable-hard-errors) enable_hard_errors=$2; shift;;
+  --) shift; break;;
+  -*) usage_error "invalid option: '$1'";;
+   *) break;;
+  esac
+  shift
+done
+
+missing_opts=
+test x"$test_name" = x && missing_opts="$missing_opts --test-name"
+test x"$log_file"  = x && missing_opts="$missing_opts --log-file"
+test x"$trs_file"  = x && missing_opts="$missing_opts --trs-file"
+if test x"$missing_opts" != x; then
+  usage_error "the following mandatory options are missing:$missing_opts"
+fi
+
+if test $# -eq 0; then
+  usage_error "missing argument"
+fi
+
+if test $color_tests = yes; then
+  # Keep this in sync with 'lib/am/check.am:$(am__tty_colors)'.
+  red='' # Red.
+  grn='' # Green.
+  lgn='' # Light green.
+  blu='' # Blue.
+  mgn='' # Magenta.
+  std=''     # No color.
+else
+  red= grn= lgn= blu= mgn= std=
+fi
+
+do_exit='rm -f $log_file $trs_file; (exit $st); exit $st'
+trap "st=129; $do_exit" 1
+trap "st=130; $do_exit" 2
+trap "st=141; $do_exit" 13
+trap "st=143; $do_exit" 15
+
+# Test script is run here. We create the file first, then append to it,
+# to ameliorate tests themselves also writing to the log file. Our tests
+# don't, but others can (automake bug#35762).
+: >"$log_file"
+"$@" >>"$log_file" 2>&1
+estatus=$?
+
+if test $enable_hard_errors = no && test $estatus -eq 99; then
+  tweaked_estatus=1
+else
+  tweaked_estatus=$estatus
+fi
+
+case $tweaked_estatus:$expect_failure in
+  0:yes) col=$red res=XPASS recheck=yes gcopy=yes;;
+  0:*)   col=$grn res=PASS  recheck=no  gcopy=no;;
+  77:*)  col=$blu res=SKIP  recheck=no  gcopy=yes;;
+  99:*)  col=$mgn res=ERROR recheck=yes gcopy=yes;;
+  *:yes) col=$lgn res=XFAIL recheck=no  gcopy=yes;;
+  *:*)   col=$red res=FAIL  recheck=yes gcopy=yes;;
+esac
+
+# Report the test outcome and exit status in the logs, so that one can
+# know whether the test passed or failed simply by looking at the '.log'
+# file, without the need of also peaking into the corresponding '.trs'
+# file (automake bug#11814).
+echo "$res $test_name (exit status: $estatus)" >>"$log_file"
+
+# Report outcome to console.
+echo "${col}${res}${std}: $test_name"
+
+# Register the test result, and other relevant metadata.
+echo ":test-result: $res" > $trs_file
+echo ":global-test-result: $res" >> $trs_file
+echo ":recheck: $recheck" >> $trs_file
+echo ":copy-in-global-log: $gcopy" >> $trs_file
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/grep/build-aux/texinfo.tex b/src/grep/build-aux/texinfo.tex
new file mode 100644
index 0000000..e48383d
--- /dev/null
+++ b/src/grep/build-aux/texinfo.tex
@@ -0,0 +1,11612 @@
+% texinfo.tex -- TeX macros to handle Texinfo files.
+%
+% Load plain if necessary, i.e., if running under initex.
+\expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
+%
+\def\texinfoversion{2021-04-25.21}
+%
+% Copyright 1985, 1986, 1988, 1990-2021 Free Software Foundation, Inc.
+%
+% This texinfo.tex file is free software: you can redistribute it and/or
+% modify it under the terms of the GNU General Public License as
+% published by the Free Software Foundation, either version 3 of the
+% License, or (at your option) any later version.
+%
+% This texinfo.tex file is distributed in the hope that it will be
+% useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+% of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+% General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with this program.  If not, see <https://www.gnu.org/licenses/>.
+%
+% As a special exception, when this file is read by TeX when processing
+% a Texinfo source document, you may use the result without
+% restriction. This Exception is an additional permission under section 7
+% of the GNU General Public License, version 3 ("GPLv3").
+%
+% Please try the latest version of texinfo.tex before submitting bug
+% reports; you can get the latest version from:
+%   https://ftp.gnu.org/gnu/texinfo/ (the Texinfo release area), or
+%   https://ftpmirror.gnu.org/texinfo/ (same, via a mirror), or
+%   https://www.gnu.org/software/texinfo/ (the Texinfo home page)
+% The texinfo.tex in any given distribution could well be out
+% of date, so if that's what you're using, please check.
+%
+% Send bug reports to bug-texinfo@gnu.org.  Please include a
+% complete document in each bug report with which we can reproduce the
+% problem.  Patches are, of course, greatly appreciated.
+%
+% To process a Texinfo manual with TeX, it's most reliable to use the
+% texi2dvi shell script that comes with the distribution.  For a simple
+% manual foo.texi, however, you can get away with this:
+%   tex foo.texi
+%   texindex foo.??
+%   tex foo.texi
+%   tex foo.texi
+%   dvips foo.dvi -o  # or whatever; this makes foo.ps.
+% The extra TeX runs get the cross-reference information correct.
+% Sometimes one run after texindex suffices, and sometimes you need more
+% than two; texi2dvi does it as many times as necessary.
+%
+% It is possible to adapt texinfo.tex for other languages, to some
+% extent.  You can get the existing language-specific files from the
+% full Texinfo distribution.
+%
+% The GNU Texinfo home page is https://www.gnu.org/software/texinfo.
+
+
+\message{Loading texinfo [version \texinfoversion]:}
+
+% If in a .fmt file, print the version number
+% and turn on active characters that we couldn't do earlier because
+% they might have appeared in the input file name.
+\everyjob{\message{[Texinfo version \texinfoversion]}%
+  \catcode`+=\active \catcode`\_=\active}
+
+% LaTeX's \typeout.  This ensures that the messages it is used for
+% are identical in format to the corresponding ones from latex/pdflatex.
+\def\typeout{\immediate\write17}%
+
+\chardef\other=12
+
+% We never want plain's \outer definition of \+ in Texinfo.
+% For @tex, we can use \tabalign.
+\let\+ = \relax
+
+% Save some plain tex macros whose names we will redefine.
+\let\ptexb=\b
+\let\ptexbullet=\bullet
+\let\ptexc=\c
+\let\ptexcomma=\,
+\let\ptexdot=\.
+\let\ptexdots=\dots
+\let\ptexend=\end
+\let\ptexequiv=\equiv
+\let\ptexexclam=\!
+\let\ptexfootnote=\footnote
+\let\ptexgtr=>
+\let\ptexhat=^
+\let\ptexi=\i
+\let\ptexindent=\indent
+\let\ptexinsert=\insert
+\let\ptexlbrace=\{
+\let\ptexless=<
+\let\ptexnewwrite\newwrite
+\let\ptexnoindent=\noindent
+\let\ptexplus=+
+\let\ptexraggedright=\raggedright
+\let\ptexrbrace=\}
+\let\ptexslash=\/
+\let\ptexsp=\sp
+\let\ptexstar=\*
+\let\ptexsup=\sup
+\let\ptext=\t
+\let\ptextop=\top
+{\catcode`\'=\active \global\let\ptexquoteright'}% active in plain's math mode
+
+% If this character appears in an error message or help string, it
+% starts a new line in the output.
+\newlinechar = `^^J
+
+% Use TeX 3.0's \inputlineno to get the line number, for better error
+% messages, but if we're using an old version of TeX, don't do anything.
+%
+\ifx\inputlineno\thisisundefined
+  \let\linenumber = \empty % Pre-3.0.
+\else
+  \def\linenumber{l.\the\inputlineno:\space}
+\fi
+
+% Set up fixed words for English if not already set.
+\ifx\putwordAppendix\undefined  \gdef\putwordAppendix{Appendix}\fi
+\ifx\putwordChapter\undefined   \gdef\putwordChapter{Chapter}\fi
+\ifx\putworderror\undefined     \gdef\putworderror{error}\fi
+\ifx\putwordfile\undefined      \gdef\putwordfile{file}\fi
+\ifx\putwordin\undefined        \gdef\putwordin{in}\fi
+\ifx\putwordIndexIsEmpty\undefined       \gdef\putwordIndexIsEmpty{(Index is empty)}\fi
+\ifx\putwordIndexNonexistent\undefined   \gdef\putwordIndexNonexistent{(Index is nonexistent)}\fi
+\ifx\putwordInfo\undefined      \gdef\putwordInfo{Info}\fi
+\ifx\putwordInstanceVariableof\undefined \gdef\putwordInstanceVariableof{Instance Variable of}\fi
+\ifx\putwordMethodon\undefined  \gdef\putwordMethodon{Method on}\fi
+\ifx\putwordNoTitle\undefined   \gdef\putwordNoTitle{No Title}\fi
+\ifx\putwordof\undefined        \gdef\putwordof{of}\fi
+\ifx\putwordon\undefined        \gdef\putwordon{on}\fi
+\ifx\putwordpage\undefined      \gdef\putwordpage{page}\fi
+\ifx\putwordsection\undefined   \gdef\putwordsection{section}\fi
+\ifx\putwordSection\undefined   \gdef\putwordSection{Section}\fi
+\ifx\putwordsee\undefined       \gdef\putwordsee{see}\fi
+\ifx\putwordSee\undefined       \gdef\putwordSee{See}\fi
+\ifx\putwordShortTOC\undefined  \gdef\putwordShortTOC{Short Contents}\fi
+\ifx\putwordTOC\undefined       \gdef\putwordTOC{Table of Contents}\fi
+%
+\ifx\putwordMJan\undefined \gdef\putwordMJan{January}\fi
+\ifx\putwordMFeb\undefined \gdef\putwordMFeb{February}\fi
+\ifx\putwordMMar\undefined \gdef\putwordMMar{March}\fi
+\ifx\putwordMApr\undefined \gdef\putwordMApr{April}\fi
+\ifx\putwordMMay\undefined \gdef\putwordMMay{May}\fi
+\ifx\putwordMJun\undefined \gdef\putwordMJun{June}\fi
+\ifx\putwordMJul\undefined \gdef\putwordMJul{July}\fi
+\ifx\putwordMAug\undefined \gdef\putwordMAug{August}\fi
+\ifx\putwordMSep\undefined \gdef\putwordMSep{September}\fi
+\ifx\putwordMOct\undefined \gdef\putwordMOct{October}\fi
+\ifx\putwordMNov\undefined \gdef\putwordMNov{November}\fi
+\ifx\putwordMDec\undefined \gdef\putwordMDec{December}\fi
+%
+\ifx\putwordDefmac\undefined    \gdef\putwordDefmac{Macro}\fi
+\ifx\putwordDefspec\undefined   \gdef\putwordDefspec{Special Form}\fi
+\ifx\putwordDefvar\undefined    \gdef\putwordDefvar{Variable}\fi
+\ifx\putwordDefopt\undefined    \gdef\putwordDefopt{User Option}\fi
+\ifx\putwordDeffunc\undefined   \gdef\putwordDeffunc{Function}\fi
+
+% Give the space character the catcode for a space.
+\def\spaceisspace{\catcode`\ =10\relax}
+
+% Likewise for ^^M, the end of line character.
+\def\endlineisspace{\catcode13=10\relax}
+
+\chardef\dashChar  = `\-
+\chardef\slashChar = `\/
+\chardef\underChar = `\_
+
+% Ignore a token.
+%
+\def\gobble#1{}
+
+% The following is used inside several \edef's.
+\def\makecsname#1{\expandafter\noexpand\csname#1\endcsname}
+
+% Hyphenation fixes.
+\hyphenation{
+  Flor-i-da Ghost-script Ghost-view Mac-OS Post-Script
+  ap-pen-dix bit-map bit-maps
+  data-base data-bases eshell fall-ing half-way long-est man-u-script
+  man-u-scripts mini-buf-fer mini-buf-fers over-view par-a-digm
+  par-a-digms rath-er rec-tan-gu-lar ro-bot-ics se-vere-ly set-up spa-ces
+  spell-ing spell-ings
+  stand-alone strong-est time-stamp time-stamps which-ever white-space
+  wide-spread wrap-around
+}
+
+% Sometimes it is convenient to have everything in the transcript file
+% and nothing on the terminal.  We don't just call \tracingall here,
+% since that produces some useless output on the terminal.  We also make
+% some effort to order the tracing commands to reduce output in the log
+% file; cf. trace.sty in LaTeX.
+%
+\def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
+\def\loggingall{%
+  \tracingstats2
+  \tracingpages1
+  \tracinglostchars2  % 2 gives us more in etex
+  \tracingparagraphs1
+  \tracingoutput1
+  \tracingmacros2
+  \tracingrestores1
+  \showboxbreadth\maxdimen \showboxdepth\maxdimen
+  \ifx\eTeXversion\thisisundefined\else % etex gives us more logging
+    \tracingscantokens1
+    \tracingifs1
+    \tracinggroups1
+    \tracingnesting2
+    \tracingassigns1
+  \fi
+  \tracingcommands3  % 3 gives us more in etex
+  \errorcontextlines16
+}%
+
+% @errormsg{MSG}.  Do the index-like expansions on MSG, but if things
+% aren't perfect, it's not the end of the world, being an error message,
+% after all.
+%
+\def\errormsg{\begingroup \indexnofonts \doerrormsg}
+\def\doerrormsg#1{\errmessage{#1}}
+
+% add check for \lastpenalty to plain's definitions.  If the last thing
+% we did was a \nobreak, we don't want to insert more space.
+%
+\def\smallbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\smallskipamount
+  \removelastskip\penalty-50\smallskip\fi\fi}
+\def\medbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\medskipamount
+  \removelastskip\penalty-100\medskip\fi\fi}
+\def\bigbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\bigskipamount
+  \removelastskip\penalty-200\bigskip\fi\fi}
+
+% Output routine
+%
+
+% For a final copy, take out the rectangles
+% that mark overfull boxes (in case you have decided
+% that the text looks ok even though it passes the margin).
+%
+\def\finalout{\overfullrule=0pt }
+
+\newdimen\outerhsize \newdimen\outervsize % set by the paper size routines
+\newdimen\topandbottommargin \topandbottommargin=.75in
+
+% Output a mark which sets \thischapter, \thissection and \thiscolor.
+% We dump everything together because we only have one kind of mark.
+% This works because we only use \botmark / \topmark, not \firstmark.
+%
+% A mark contains a subexpression of the \ifcase ... \fi construct.
+% \get*marks macros below extract the needed part using \ifcase.
+%
+% Another complication is to let the user choose whether \thischapter
+% (\thissection) refers to the chapter (section) in effect at the top
+% of a page, or that at the bottom of a page.
+
+% \domark is called twice inside \chapmacro, to add one
+% mark before the section break, and one after.
+%   In the second call \prevchapterdefs is the same as \currentchapterdefs,
+% and \prevsectiondefs is the same as \currentsectiondefs.
+%   Then if the page is not broken at the mark, some of the previous
+% section appears on the page, and we can get the name of this section
+% from \firstmark for @everyheadingmarks top.
+%   @everyheadingmarks bottom uses \botmark.
+%
+% See page 260 of The TeXbook.
+\def\domark{%
+  \toks0=\expandafter{\currentchapterdefs}%
+  \toks2=\expandafter{\currentsectiondefs}%
+  \toks4=\expandafter{\prevchapterdefs}%
+  \toks6=\expandafter{\prevsectiondefs}%
+  \toks8=\expandafter{\currentcolordefs}%
+  \mark{%
+                   \the\toks0 \the\toks2  % 0: marks for @everyheadingmarks top
+      \noexpand\or \the\toks4 \the\toks6  % 1: for @everyheadingmarks bottom
+    \noexpand\else \the\toks8             % 2: color marks
+  }%
+}
+
+% \gettopheadingmarks, \getbottomheadingmarks,
+% \getcolormarks - extract needed part of mark.
+%
+% \topmark doesn't work for the very first chapter (after the title
+% page or the contents), so we use \firstmark there -- this gets us
+% the mark with the chapter defs, unless the user sneaks in, e.g.,
+% @setcolor (or @url, or @link, etc.) between @contents and the very
+% first @chapter.
+\def\gettopheadingmarks{%
+  \ifcase0\the\savedtopmark\fi
+  \ifx\thischapter\empty \ifcase0\firstmark\fi \fi
+}
+\def\getbottomheadingmarks{\ifcase1\botmark\fi}
+\def\getcolormarks{\ifcase2\the\savedtopmark\fi}
+
+% Avoid "undefined control sequence" errors.
+\def\currentchapterdefs{}
+\def\currentsectiondefs{}
+\def\currentsection{}
+\def\prevchapterdefs{}
+\def\prevsectiondefs{}
+\def\currentcolordefs{}
+
+% Margin to add to right of even pages, to left of odd pages.
+\newdimen\bindingoffset
+\newdimen\normaloffset
+\newdimen\txipagewidth \newdimen\txipageheight
+
+% Main output routine.
+%
+\chardef\PAGE = 255
+\newtoks\defaultoutput
+\defaultoutput = {\savetopmark\onepageout{\pagecontents\PAGE}}
+\output=\expandafter{\the\defaultoutput}
+
+\newbox\headlinebox
+\newbox\footlinebox
+
+% When outputting the double column layout for indices, an output routine
+% is run several times, which hides the original value of \topmark.  This
+% can lead to a page heading being output and duplicating the chapter heading
+% of the index.  Hence, save the contents of \topmark at the beginning of
+% the output routine.  The saved contents are valid until we actually
+% \shipout a page.
+%
+% (We used to run a short output routine to actually set \topmark and
+% \firstmark to the right values, but if this was called with an empty page
+% containing whatsits for writing index entries, the whatsits would be thrown
+% away and the index auxiliary file would remain empty.)
+%
+\newtoks\savedtopmark
+\newif\iftopmarksaved
+\topmarksavedtrue
+\def\savetopmark{%
+  \iftopmarksaved\else
+    \global\savedtopmark=\expandafter{\topmark}%
+    \global\topmarksavedtrue
+  \fi
+}
+
+% \onepageout takes a vbox as an argument.
+% \shipout a vbox for a single page, adding an optional header, footer
+% and footnote.  This also causes index entries for this page to be written
+% to the auxiliary files.
+%
+\def\onepageout#1{%
+  \hoffset=\normaloffset
+  %
+  \ifodd\pageno  \advance\hoffset by \bindingoffset
+  \else \advance\hoffset by -\bindingoffset\fi
+  %
+  \checkchapterpage
+  %
+  % Retrieve the information for the headings from the marks in the page,
+  % and call Plain TeX's \makeheadline and \makefootline, which use the
+  % values in \headline and \footline.
+  %
+  % Common context changes for both heading and footing.
+  % Do this outside of the \shipout so @code etc. will be expanded in
+  % the headline as they should be, not taken literally (outputting ''code).
+  \def\commonheadfootline{\let\hsize=\txipagewidth \texinfochars}
+  %
+  \ifodd\pageno \getoddheadingmarks \else \getevenheadingmarks \fi
+  \global\setbox\headlinebox = \vbox{\commonheadfootline \makeheadline}%
+  \ifodd\pageno \getoddfootingmarks \else \getevenfootingmarks \fi
+  \global\setbox\footlinebox = \vbox{\commonheadfootline \makefootline}%
+  %
+  {%
+    % Set context for writing to auxiliary files like index files.
+    % Have to do this stuff outside the \shipout because we want it to
+    % take effect in \write's, yet the group defined by the \vbox ends
+    % before the \shipout runs.
+    %
+    \atdummies         % don't expand commands in the output.
+    \turnoffactive
+    \shipout\vbox{%
+      % Do this early so pdf references go to the beginning of the page.
+      \ifpdfmakepagedest \pdfdest name{\the\pageno} xyz\fi
+      %
+      \unvbox\headlinebox
+      \pagebody{#1}%
+      \ifdim\ht\footlinebox > 0pt
+        % Only leave this space if the footline is nonempty.
+        % (We lessened \vsize for it in \oddfootingyyy.)
+        % The \baselineskip=24pt in plain's \makefootline has no effect.
+        \vskip 24pt
+        \unvbox\footlinebox
+      \fi
+      %
+    }%
+  }%
+  \global\topmarksavedfalse
+  \advancepageno
+  \ifnum\outputpenalty>-20000 \else\dosupereject\fi
+}
+
+\newinsert\margin \dimen\margin=\maxdimen
+
+% Main part of page, including any footnotes
+\def\pagebody#1{\vbox to\txipageheight{\boxmaxdepth=\maxdepth #1}}
+{\catcode`\@ =11
+\gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
+% marginal hacks, juha@viisa.uucp (Juha Takala)
+\ifvoid\margin\else % marginal info is present
+  \rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi
+\dimen@=\dp#1\relax \unvbox#1\relax
+\ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
+\ifr@ggedbottom \kern-\dimen@ \vfil \fi}
+}
+
+% Check if we are on the first page of a chapter.  Used for printing headings.
+\newif\ifchapterpage
+\def\checkchapterpage{%
+  % Get the chapter that was current at the end of the last page
+  \ifcase1\the\savedtopmark\fi
+  \let\prevchaptername\thischaptername
+  %
+  \ifodd\pageno \getoddheadingmarks \else \getevenheadingmarks \fi
+  \let\curchaptername\thischaptername
+  %
+  \ifx\curchaptername\prevchaptername
+    \chapterpagefalse
+  \else
+    \chapterpagetrue
+  \fi
+}
+
+% Argument parsing
+
+% Parse an argument, then pass it to #1.  The argument is the rest of
+% the input line (except we remove a trailing comment).  #1 should be a
+% macro which expects an ordinary undelimited TeX argument.
+% For example, \def\foo{\parsearg\fooxxx}.
+%
+\def\parsearg{\parseargusing{}}
+\def\parseargusing#1#2{%
+  \def\argtorun{#2}%
+  \begingroup
+    \obeylines
+    \spaceisspace
+    #1%
+    \parseargline\empty% Insert the \empty token, see \finishparsearg below.
+}
+
+{\obeylines %
+  \gdef\parseargline#1^^M{%
+    \endgroup % End of the group started in \parsearg.
+    \argremovecomment #1\comment\ArgTerm%
+  }%
+}
+
+% First remove any @comment, then any @c comment.  Pass the result on to
+% \argcheckspaces.
+\def\argremovecomment#1\comment#2\ArgTerm{\argremovec #1\c\ArgTerm}
+\def\argremovec#1\c#2\ArgTerm{\argcheckspaces#1\^^M\ArgTerm}
+
+% Each occurrence of `\^^M' or `<space>\^^M' is replaced by a single space.
+%
+% \argremovec might leave us with trailing space, e.g.,
+%    @end itemize  @c foo
+% This space token undergoes the same procedure and is eventually removed
+% by \finishparsearg.
+%
+\def\argcheckspaces#1\^^M{\argcheckspacesX#1\^^M \^^M}
+\def\argcheckspacesX#1 \^^M{\argcheckspacesY#1\^^M}
+\def\argcheckspacesY#1\^^M#2\^^M#3\ArgTerm{%
+  \def\temp{#3}%
+  \ifx\temp\empty
+    % Do not use \next, perhaps the caller of \parsearg uses it; reuse \temp:
+    \let\temp\finishparsearg
+  \else
+    \let\temp\argcheckspaces
+  \fi
+  % Put the space token in:
+  \temp#1 #3\ArgTerm
+}
+
+% If a _delimited_ argument is enclosed in braces, they get stripped; so
+% to get _exactly_ the rest of the line, we had to prevent such situation.
+% We prepended an \empty token at the very beginning and we expand it now,
+% just before passing the control to \argtorun.
+% (Similarly, we have to think about #3 of \argcheckspacesY above: it is
+% either the null string, or it ends with \^^M---thus there is no danger
+% that a pair of braces would be stripped.
+%
+% But first, we have to remove the trailing space token.
+%
+\def\finishparsearg#1 \ArgTerm{\expandafter\argtorun\expandafter{#1}}
+
+
+% \parseargdef - define a command taking an argument on the line
+%
+% \parseargdef\foo{...}
+%	is roughly equivalent to
+% \def\foo{\parsearg\Xfoo}
+% \def\Xfoo#1{...}
+\def\parseargdef#1{%
+  \expandafter \doparseargdef \csname\string#1\endcsname #1%
+}
+\def\doparseargdef#1#2{%
+  \def#2{\parsearg#1}%
+  \def#1##1%
+}
+
+% Several utility definitions with active space:
+{
+  \obeyspaces
+  \gdef\obeyedspace{ }
+
+  % Make each space character in the input produce a normal interword
+  % space in the output.  Don't allow a line break at this space, as this
+  % is used only in environments like @example, where each line of input
+  % should produce a line of output anyway.
+  %
+  \gdef\sepspaces{\obeyspaces\let =\tie}
+
+  % If an index command is used in an @example environment, any spaces
+  % therein should become regular spaces in the raw index file, not the
+  % expansion of \tie (\leavevmode \penalty \@M \ ).
+  \gdef\unsepspaces{\let =\space}
+}
+
+
+\def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
+
+% Define the framework for environments in texinfo.tex.  It's used like this:
+%
+%   \envdef\foo{...}
+%   \def\Efoo{...}
+%
+% It's the responsibility of \envdef to insert \begingroup before the
+% actual body; @end closes the group after calling \Efoo.  \envdef also
+% defines \thisenv, so the current environment is known; @end checks
+% whether the environment name matches.  The \checkenv macro can also be
+% used to check whether the current environment is the one expected.
+%
+% Non-false conditionals (@iftex, @ifset) don't fit into this, so they
+% are not treated as environments; they don't open a group.  (The
+% implementation of @end takes care not to call \endgroup in this
+% special case.)
+
+
+% At run-time, environments start with this:
+\def\startenvironment#1{\begingroup\def\thisenv{#1}}
+% initialize
+\let\thisenv\empty
+
+% ... but they get defined via ``\envdef\foo{...}'':
+\long\def\envdef#1#2{\def#1{\startenvironment#1#2}}
+\def\envparseargdef#1#2{\parseargdef#1{\startenvironment#1#2}}
+
+% Check whether we're in the right environment:
+\def\checkenv#1{%
+  \def\temp{#1}%
+  \ifx\thisenv\temp
+  \else
+    \badenverr
+  \fi
+}
+
+% Environment mismatch, #1 expected:
+\def\badenverr{%
+  \errhelp = \EMsimple
+  \errmessage{This command can appear only \inenvironment\temp,
+    not \inenvironment\thisenv}%
+}
+\def\inenvironment#1{%
+  \ifx#1\empty
+    outside of any environment%
+  \else
+    in environment \expandafter\string#1%
+  \fi
+}
+
+
+% @end foo calls \checkenv and executes the definition of \Efoo.
+\parseargdef\end{%
+  \if 1\csname iscond.#1\endcsname
+  \else
+    % The general wording of \badenverr may not be ideal.
+    \expandafter\checkenv\csname#1\endcsname
+    \csname E#1\endcsname
+    \endgroup
+  \fi
+}
+
+\newhelp\EMsimple{Press RETURN to continue.}
+
+
+% Be sure we're in horizontal mode when doing a tie, since we make space
+% equivalent to this in @example-like environments. Otherwise, a space
+% at the beginning of a line will start with \penalty -- and
+% since \penalty is valid in vertical mode, we'd end up putting the
+% penalty on the vertical list instead of in the new paragraph.
+{\catcode`@ = 11
+ % Avoid using \@M directly, because that causes trouble
+ % if the definition is written into an index file.
+ \global\let\tiepenalty = \@M
+ \gdef\tie{\leavevmode\penalty\tiepenalty\ }
+}
+
+% @: forces normal size whitespace following.
+\def\:{\spacefactor=1000 }
+
+% @* forces a line break.
+\def\*{\unskip\hfil\break\hbox{}\ignorespaces}
+
+% @/ allows a line break.
+\let\/=\allowbreak
+
+% @. is an end-of-sentence period.
+\def\.{.\spacefactor=\endofsentencespacefactor\space}
+
+% @! is an end-of-sentence bang.
+\def\!{!\spacefactor=\endofsentencespacefactor\space}
+
+% @? is an end-of-sentence query.
+\def\?{?\spacefactor=\endofsentencespacefactor\space}
+
+% @frenchspacing on|off  says whether to put extra space after punctuation.
+%
+\def\onword{on}
+\def\offword{off}
+%
+\parseargdef\frenchspacing{%
+  \def\temp{#1}%
+  \ifx\temp\onword \plainfrenchspacing
+  \else\ifx\temp\offword \plainnonfrenchspacing
+  \else
+    \errhelp = \EMsimple
+    \errmessage{Unknown @frenchspacing option `\temp', must be on|off}%
+  \fi\fi
+}
+
+% @w prevents a word break.  Without the \leavevmode, @w at the
+% beginning of a paragraph, when TeX is still in vertical mode, would
+% produce a whole line of output instead of starting the paragraph.
+\def\w#1{\leavevmode\hbox{#1}}
+
+% @group ... @end group forces ... to be all on one page, by enclosing
+% it in a TeX vbox.  We use \vtop instead of \vbox to construct the box
+% to keep its height that of a normal line.  According to the rules for
+% \topskip (p.114 of the TeXbook), the glue inserted is
+% max (\topskip - \ht (first item), 0).  If that height is large,
+% therefore, no glue is inserted, and the space between the headline and
+% the text is small, which looks bad.
+%
+% Another complication is that the group might be very large.  This can
+% cause the glue on the previous page to be unduly stretched, because it
+% does not have much material.  In this case, it's better to add an
+% explicit \vfill so that the extra space is at the bottom.  The
+% threshold for doing this is if the group is more than \vfilllimit
+% percent of a page (\vfilllimit can be changed inside of @tex).
+%
+\newbox\groupbox
+\def\vfilllimit{0.7}
+%
+\envdef\group{%
+  \ifnum\catcode`\^^M=\active \else
+    \errhelp = \groupinvalidhelp
+    \errmessage{@group invalid in context where filling is enabled}%
+  \fi
+  \startsavinginserts
+  %
+  \setbox\groupbox = \vtop\bgroup
+    % Do @comment since we are called inside an environment such as
+    % @example, where each end-of-line in the input causes an
+    % end-of-line in the output.  We don't want the end-of-line after
+    % the `@group' to put extra space in the output.  Since @group
+    % should appear on a line by itself (according to the Texinfo
+    % manual), we don't worry about eating any user text.
+    \comment
+}
+%
+% The \vtop produces a box with normal height and large depth; thus, TeX puts
+% \baselineskip glue before it, and (when the next line of text is done)
+% \lineskip glue after it.  Thus, space below is not quite equal to space
+% above.  But it's pretty close.
+\def\Egroup{%
+    % To get correct interline space between the last line of the group
+    % and the first line afterwards, we have to propagate \prevdepth.
+    \endgraf % Not \par, as it may have been set to \lisppar.
+    \global\dimen1 = \prevdepth
+  \egroup           % End the \vtop.
+  \addgroupbox
+  \prevdepth = \dimen1
+  \checkinserts
+}
+
+\def\addgroupbox{
+  % \dimen0 is the vertical size of the group's box.
+  \dimen0 = \ht\groupbox  \advance\dimen0 by \dp\groupbox
+  % \dimen2 is how much space is left on the page (more or less).
+  \dimen2 = \txipageheight   \advance\dimen2 by -\pagetotal
+  % if the group doesn't fit on the current page, and it's a big big
+  % group, force a page break.
+  \ifdim \dimen0 > \dimen2
+    \ifdim \pagetotal < \vfilllimit\txipageheight
+      \page
+    \fi
+  \fi
+  \box\groupbox
+}
+
+%
+% TeX puts in an \escapechar (i.e., `@') at the beginning of the help
+% message, so this ends up printing `@group can only ...'.
+%
+\newhelp\groupinvalidhelp{%
+group can only be used in environments such as @example,^^J%
+where each line of input produces a line of output.}
+
+% @need space-in-mils
+% forces a page break if there is not space-in-mils remaining.
+
+\newdimen\mil  \mil=0.001in
+
+\parseargdef\need{%
+  % Ensure vertical mode, so we don't make a big box in the middle of a
+  % paragraph.
+  \par
+  %
+  % If the @need value is less than one line space, it's useless.
+  \dimen0 = #1\mil
+  \dimen2 = \ht\strutbox
+  \advance\dimen2 by \dp\strutbox
+  \ifdim\dimen0 > \dimen2
+    %
+    % Do a \strut just to make the height of this box be normal, so the
+    % normal leading is inserted relative to the preceding line.
+    % And a page break here is fine.
+    \vtop to #1\mil{\strut\vfil}%
+    %
+    % TeX does not even consider page breaks if a penalty added to the
+    % main vertical list is 10000 or more.  But in order to see if the
+    % empty box we just added fits on the page, we must make it consider
+    % page breaks.  On the other hand, we don't want to actually break the
+    % page after the empty box.  So we use a penalty of 9999.
+    %
+    % There is an extremely small chance that TeX will actually break the
+    % page at this \penalty, if there are no other feasible breakpoints in
+    % sight.  (If the user is using lots of big @group commands, which
+    % almost-but-not-quite fill up a page, TeX will have a hard time doing
+    % good page breaking, for example.)  However, I could not construct an
+    % example where a page broke at this \penalty; if it happens in a real
+    % document, then we can reconsider our strategy.
+    \penalty9999
+    %
+    % Back up by the size of the box, whether we did a page break or not.
+    \kern -#1\mil
+    %
+    % Do not allow a page break right after this kern.
+    \nobreak
+  \fi
+}
+
+% @br   forces paragraph break (and is undocumented).
+
+\let\br = \par
+
+% @page forces the start of a new page.
+%
+\def\page{\par\vfill\supereject}
+
+% @exdent text....
+% outputs text on separate line in roman font, starting at standard page margin
+
+% This records the amount of indent in the innermost environment.
+% That's how much \exdent should take out.
+\newskip\exdentamount
+
+% This defn is used inside fill environments such as @defun.
+\parseargdef\exdent{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}
+
+% This defn is used inside nofill environments such as @example.
+\parseargdef\nofillexdent{{\advance \leftskip by -\exdentamount
+  \leftline{\hskip\leftskip{\rm#1}}}}
+
+% @inmargin{WHICH}{TEXT} puts TEXT in the WHICH margin next to the current
+% paragraph.  For more general purposes, use the \margin insertion
+% class.  WHICH is `l' or `r'.  Not documented, written for gawk manual.
+%
+\newskip\inmarginspacing \inmarginspacing=1cm
+\def\strutdepth{\dp\strutbox}
+%
+\def\doinmargin#1#2{\strut\vadjust{%
+  \nobreak
+  \kern-\strutdepth
+  \vtop to \strutdepth{%
+    \baselineskip=\strutdepth
+    \vss
+    % if you have multiple lines of stuff to put here, you'll need to
+    % make the vbox yourself of the appropriate size.
+    \ifx#1l%
+      \llap{\ignorespaces #2\hskip\inmarginspacing}%
+    \else
+      \rlap{\hskip\hsize \hskip\inmarginspacing \ignorespaces #2}%
+    \fi
+    \null
+  }%
+}}
+\def\inleftmargin{\doinmargin l}
+\def\inrightmargin{\doinmargin r}
+%
+% @inmargin{TEXT [, RIGHT-TEXT]}
+% (if RIGHT-TEXT is given, use TEXT for left page, RIGHT-TEXT for right;
+% else use TEXT for both).
+%
+\def\inmargin#1{\parseinmargin #1,,\finish}
+\def\parseinmargin#1,#2,#3\finish{% not perfect, but better than nothing.
+  \setbox0 = \hbox{\ignorespaces #2}%
+  \ifdim\wd0 > 0pt
+    \def\lefttext{#1}%  have both texts
+    \def\righttext{#2}%
+  \else
+    \def\lefttext{#1}%  have only one text
+    \def\righttext{#1}%
+  \fi
+  %
+  \ifodd\pageno
+    \def\temp{\inrightmargin\righttext}% odd page -> outside is right margin
+  \else
+    \def\temp{\inleftmargin\lefttext}%
+  \fi
+  \temp
+}
+
+% @include FILE -- \input text of FILE.
+%
+\def\include{\parseargusing\filenamecatcodes\includezzz}
+\def\includezzz#1{%
+  \pushthisfilestack
+  \def\thisfile{#1}%
+  {%
+    \makevalueexpandable  % we want to expand any @value in FILE.
+    \turnoffactive        % and allow special characters in the expansion
+    \indexnofonts         % Allow `@@' and other weird things in file names.
+    \wlog{texinfo.tex: doing @include of #1^^J}%
+    \edef\temp{\noexpand\input #1 }%
+    %
+    % This trickery is to read FILE outside of a group, in case it makes
+    % definitions, etc.
+    \expandafter
+  }\temp
+  \popthisfilestack
+}
+\def\filenamecatcodes{%
+  \catcode`\\=\other
+  \catcode`~=\other
+  \catcode`^=\other
+  \catcode`_=\other
+  \catcode`|=\other
+  \catcode`<=\other
+  \catcode`>=\other
+  \catcode`+=\other
+  \catcode`-=\other
+  \catcode`\`=\other
+  \catcode`\'=\other
+}
+
+\def\pushthisfilestack{%
+  \expandafter\pushthisfilestackX\popthisfilestack\StackTerm
+}
+\def\pushthisfilestackX{%
+  \expandafter\pushthisfilestackY\thisfile\StackTerm
+}
+\def\pushthisfilestackY #1\StackTerm #2\StackTerm {%
+  \gdef\popthisfilestack{\gdef\thisfile{#1}\gdef\popthisfilestack{#2}}%
+}
+
+\def\popthisfilestack{\errthisfilestackempty}
+\def\errthisfilestackempty{\errmessage{Internal error:
+  the stack of filenames is empty.}}
+%
+\def\thisfile{}
+
+% @center line
+% outputs that line, centered.
+%
+\parseargdef\center{%
+  \ifhmode
+    \let\centersub\centerH
+  \else
+    \let\centersub\centerV
+  \fi
+  \centersub{\hfil \ignorespaces#1\unskip \hfil}%
+  \let\centersub\relax % don't let the definition persist, just in case
+}
+\def\centerH#1{{%
+  \hfil\break
+  \advance\hsize by -\leftskip
+  \advance\hsize by -\rightskip
+  \line{#1}%
+  \break
+}}
+%
+\newcount\centerpenalty
+\def\centerV#1{%
+  % The idea here is the same as in \startdefun, \cartouche, etc.: if
+  % @center is the first thing after a section heading, we need to wipe
+  % out the negative parskip inserted by \sectionheading, but still
+  % prevent a page break here.
+  \centerpenalty = \lastpenalty
+  \ifnum\centerpenalty>10000 \vskip\parskip \fi
+  \ifnum\centerpenalty>9999 \penalty\centerpenalty \fi
+  \line{\kern\leftskip #1\kern\rightskip}%
+}
+
+% @sp n   outputs n lines of vertical space
+%
+\parseargdef\sp{\vskip #1\baselineskip}
+
+% @comment ...line which is ignored...
+% @c is the same as @comment
+% @ignore ... @end ignore  is another way to write a comment
+
+
+\def\c{\begingroup \catcode`\^^M=\active%
+\catcode`\@=\other \catcode`\{=\other \catcode`\}=\other%
+\cxxx}
+{\catcode`\^^M=\active \gdef\cxxx#1^^M{\endgroup}}
+%
+\let\comment\c
+
+% @paragraphindent NCHARS
+% We'll use ems for NCHARS, close enough.
+% NCHARS can also be the word `asis' or `none'.
+% We cannot feasibly implement @paragraphindent asis, though.
+%
+\def\asisword{asis} % no translation, these are keywords
+\def\noneword{none}
+%
+\parseargdef\paragraphindent{%
+  \def\temp{#1}%
+  \ifx\temp\asisword
+  \else
+    \ifx\temp\noneword
+      \defaultparindent = 0pt
+    \else
+      \defaultparindent = #1em
+    \fi
+  \fi
+  \parindent = \defaultparindent
+}
+
+% @exampleindent NCHARS
+% We'll use ems for NCHARS like @paragraphindent.
+% It seems @exampleindent asis isn't necessary, but
+% I preserve it to make it similar to @paragraphindent.
+\parseargdef\exampleindent{%
+  \def\temp{#1}%
+  \ifx\temp\asisword
+  \else
+    \ifx\temp\noneword
+      \lispnarrowing = 0pt
+    \else
+      \lispnarrowing = #1em
+    \fi
+  \fi
+}
+
+% @firstparagraphindent WORD
+% If WORD is `none', then suppress indentation of the first paragraph
+% after a section heading.  If WORD is `insert', then do indent at such
+% paragraphs.
+%
+% The paragraph indentation is suppressed or not by calling
+% \suppressfirstparagraphindent, which the sectioning commands do.
+% We switch the definition of this back and forth according to WORD.
+% By default, we suppress indentation.
+%
+\def\suppressfirstparagraphindent{\dosuppressfirstparagraphindent}
+\def\insertword{insert}
+%
+\parseargdef\firstparagraphindent{%
+  \def\temp{#1}%
+  \ifx\temp\noneword
+    \let\suppressfirstparagraphindent = \dosuppressfirstparagraphindent
+  \else\ifx\temp\insertword
+    \let\suppressfirstparagraphindent = \relax
+  \else
+    \errhelp = \EMsimple
+    \errmessage{Unknown @firstparagraphindent option `\temp'}%
+  \fi\fi
+}
+
+% Here is how we actually suppress indentation.  Redefine \everypar to
+% \kern backwards by \parindent, and then reset itself to empty.
+%
+% We also make \indent itself not actually do anything until the next
+% paragraph.
+%
+\gdef\dosuppressfirstparagraphindent{%
+  \gdef\indent  {\restorefirstparagraphindent \indent}%
+  \gdef\noindent{\restorefirstparagraphindent \noindent}%
+  \global\everypar = {\kern -\parindent \restorefirstparagraphindent}%
+}
+%
+\gdef\restorefirstparagraphindent{%
+  \global\let\indent = \ptexindent
+  \global\let\noindent = \ptexnoindent
+  \global\everypar = {}%
+}
+
+% leave vertical mode without cancelling any first paragraph indent
+\gdef\imageindent{%
+  \toks0=\everypar
+  \everypar={}%
+  \ptexnoindent
+  \global\everypar=\toks0
+}
+
+
+% @refill is a no-op.
+\let\refill=\relax
+
+% @setfilename INFO-FILENAME - ignored
+\let\setfilename=\comment
+
+% @bye.
+\outer\def\bye{\chappager\pagelabels\tracingstats=1\ptexend}
+
+
+\message{pdf,}
+% adobe `portable' document format
+\newcount\tempnum
+\newcount\lnkcount
+\newtoks\filename
+\newcount\filenamelength
+\newcount\pgn
+\newtoks\toksA
+\newtoks\toksB
+\newtoks\toksC
+\newtoks\toksD
+\newbox\boxA
+\newbox\boxB
+\newcount\countA
+\newif\ifpdf
+\newif\ifpdfmakepagedest
+
+%
+% For LuaTeX
+%
+
+\newif\iftxiuseunicodedestname
+\txiuseunicodedestnamefalse % For pdfTeX etc.
+
+\ifx\luatexversion\thisisundefined
+\else
+  % Use Unicode destination names
+  \txiuseunicodedestnametrue
+  % Escape PDF strings with converting UTF-16 from UTF-8
+  \begingroup
+    \catcode`\%=12
+    \directlua{
+      function UTF16oct(str)
+        tex.sprint(string.char(0x5c) .. '376' .. string.char(0x5c) .. '377')
+        for c in string.utfvalues(str) do
+          if c < 0x10000 then
+            tex.sprint(
+              string.format(string.char(0x5c) .. string.char(0x25) .. '03o' ..
+                            string.char(0x5c) .. string.char(0x25) .. '03o',
+                            math.floor(c / 256), math.floor(c % 256)))
+          else
+            c = c - 0x10000
+            local c_hi = c / 1024 + 0xd800
+            local c_lo = c % 1024 + 0xdc00
+            tex.sprint(
+              string.format(string.char(0x5c) .. string.char(0x25) .. '03o' ..
+                            string.char(0x5c) .. string.char(0x25) .. '03o' ..
+                            string.char(0x5c) .. string.char(0x25) .. '03o' ..
+                            string.char(0x5c) .. string.char(0x25) .. '03o',
+                            math.floor(c_hi / 256), math.floor(c_hi % 256),
+                            math.floor(c_lo / 256), math.floor(c_lo % 256)))
+          end
+        end
+      end
+    }
+  \endgroup
+  \def\pdfescapestrutfsixteen#1{\directlua{UTF16oct('\luaescapestring{#1}')}}
+  % Escape PDF strings without converting
+  \begingroup
+    \directlua{
+      function PDFescstr(str)
+        for c in string.bytes(str) do
+          if c <= 0x20 or c >= 0x80 or c == 0x28 or c == 0x29 or c == 0x5c then
+            tex.sprint(-2,
+              string.format(string.char(0x5c) .. string.char(0x25) .. '03o',
+                            c))
+          else
+            tex.sprint(-2, string.char(c))
+          end
+        end
+      end
+    }
+    % The -2 in the arguments here gives all the input to TeX catcode 12
+    % (other) or 10 (space), preventing undefined control sequence errors. See
+    % https://lists.gnu.org/archive/html/bug-texinfo/2019-08/msg00031.html
+    %
+  \endgroup
+  \def\pdfescapestring#1{\directlua{PDFescstr('\luaescapestring{#1}')}}
+  \ifnum\luatexversion>84
+    % For LuaTeX >= 0.85
+    \def\pdfdest{\pdfextension dest}
+    \let\pdfoutput\outputmode
+    \def\pdfliteral{\pdfextension literal}
+    \def\pdfcatalog{\pdfextension catalog}
+    \def\pdftexversion{\numexpr\pdffeedback version\relax}
+    \let\pdfximage\saveimageresource
+    \let\pdfrefximage\useimageresource
+    \let\pdflastximage\lastsavedimageresourceindex
+    \def\pdfendlink{\pdfextension endlink\relax}
+    \def\pdfoutline{\pdfextension outline}
+    \def\pdfstartlink{\pdfextension startlink}
+    \def\pdffontattr{\pdfextension fontattr}
+    \def\pdfobj{\pdfextension obj}
+    \def\pdflastobj{\numexpr\pdffeedback lastobj\relax}
+    \let\pdfpagewidth\pagewidth
+    \let\pdfpageheight\pageheight
+    \edef\pdfhorigin{\pdfvariable horigin}
+    \edef\pdfvorigin{\pdfvariable vorigin}
+  \fi
+\fi
+
+% when pdftex is run in dvi mode, \pdfoutput is defined (so \pdfoutput=1
+% can be set).  So we test for \relax and 0 as well as being undefined.
+\ifx\pdfoutput\thisisundefined
+\else
+  \ifx\pdfoutput\relax
+  \else
+    \ifcase\pdfoutput
+    \else
+      \pdftrue
+    \fi
+  \fi
+\fi
+
+\newif\ifpdforxetex
+\pdforxetexfalse
+\ifpdf
+  \pdforxetextrue
+\fi
+\ifx\XeTeXrevision\thisisundefined\else
+  \pdforxetextrue
+\fi
+
+
+% Output page labels information.
+% See PDF reference v.1.7 p.594, section 8.3.1.
+\ifpdf
+\def\pagelabels{%
+  \def\title{0 << /P (T-) /S /D >>}%
+  \edef\roman{\the\romancount << /S /r >>}%
+  \edef\arabic{\the\arabiccount << /S /D >>}%
+  %
+  % Page label ranges must be increasing.  Remove any duplicates.
+  % (There is a slight chance of this being wrong if e.g. there is
+  % a @contents but no @titlepage, etc.)
+  %
+  \ifnum\romancount=0 \def\roman{}\fi
+  \ifnum\arabiccount=0 \def\title{}%
+  \else
+    \ifnum\romancount=\arabiccount \def\roman{}\fi
+  \fi
+  %
+  \ifnum\romancount<\arabiccount
+    \pdfcatalog{/PageLabels << /Nums [\title \roman \arabic ] >> }\relax
+  \else
+    \pdfcatalog{/PageLabels << /Nums [\title \arabic \roman ] >> }\relax
+  \fi
+}
+\else
+  \let\pagelabels\relax
+\fi
+
+\newcount\pagecount \pagecount=0
+\newcount\romancount \romancount=0
+\newcount\arabiccount \arabiccount=0
+\ifpdf
+  \let\ptxadvancepageno\advancepageno
+  \def\advancepageno{%
+    \ptxadvancepageno\global\advance\pagecount by 1
+  }
+\fi
+
+
+% PDF uses PostScript string constants for the names of xref targets,
+% for display in the outlines, and in other places.  Thus, we have to
+% double any backslashes.  Otherwise, a name like "\node" will be
+% interpreted as a newline (\n), followed by o, d, e.  Not good.
+%
+% See http://www.ntg.nl/pipermail/ntg-pdftex/2004-July/000654.html and
+% related messages.  The final outcome is that it is up to the TeX user
+% to double the backslashes and otherwise make the string valid, so
+% that's what we do.  pdftex 1.30.0 (ca.2005) introduced a primitive to
+% do this reliably, so we use it.
+
+% #1 is a control sequence in which to do the replacements,
+% which we \xdef.
+\def\txiescapepdf#1{%
+  \ifx\pdfescapestring\thisisundefined
+    % No primitive available; should we give a warning or log?
+    % Many times it won't matter.
+    \xdef#1{#1}%
+  \else
+    % The expandable \pdfescapestring primitive escapes parentheses,
+    % backslashes, and other special chars.
+    \xdef#1{\pdfescapestring{#1}}%
+  \fi
+}
+\def\txiescapepdfutfsixteen#1{%
+  \ifx\pdfescapestrutfsixteen\thisisundefined
+    % No UTF-16 converting macro available.
+    \txiescapepdf{#1}%
+  \else
+    \xdef#1{\pdfescapestrutfsixteen{#1}}%
+  \fi
+}
+
+\newhelp\nopdfimagehelp{Texinfo supports .png, .jpg, .jpeg, and .pdf images
+with PDF output, and none of those formats could be found.  (.eps cannot
+be supported due to the design of the PDF format; use regular TeX (DVI
+output) for that.)}
+
+\ifpdf
+  %
+  % Color manipulation macros using ideas from pdfcolor.tex,
+  % except using rgb instead of cmyk; the latter is said to render as a
+  % very dark gray on-screen and a very dark halftone in print, instead
+  % of actual black. The dark red here is dark enough to print on paper as
+  % nearly black, but still distinguishable for online viewing.  We use
+  % black by default, though.
+  \def\rgbDarkRed{0.50 0.09 0.12}
+  \def\rgbBlack{0 0 0}
+  %
+  % rg sets the color for filling (usual text, etc.);
+  % RG sets the color for stroking (thin rules, e.g., normal _'s).
+  \def\pdfsetcolor#1{\pdfliteral{#1 rg  #1 RG}}
+  %
+  % Set color, and create a mark which defines \thiscolor accordingly,
+  % so that \makeheadline knows which color to restore.
+  \def\setcolor#1{%
+    \xdef\currentcolordefs{\gdef\noexpand\thiscolor{#1}}%
+    \domark
+    \pdfsetcolor{#1}%
+  }
+  %
+  \def\maincolor{\rgbBlack}
+  \pdfsetcolor{\maincolor}
+  \edef\thiscolor{\maincolor}
+  \def\currentcolordefs{}
+  %
+  \def\makefootline{%
+    \baselineskip24pt
+    \line{\pdfsetcolor{\maincolor}\the\footline}%
+  }
+  %
+  \def\makeheadline{%
+    \vbox to 0pt{%
+      \vskip-22.5pt
+      \line{%
+        \vbox to8.5pt{}%
+        % Extract \thiscolor definition from the marks.
+        \getcolormarks
+        % Typeset the headline with \maincolor, then restore the color.
+        \pdfsetcolor{\maincolor}\the\headline\pdfsetcolor{\thiscolor}%
+      }%
+      \vss
+    }%
+    \nointerlineskip
+  }
+  %
+  %
+  \pdfcatalog{/PageMode /UseOutlines}
+  %
+  % #1 is image name, #2 width (might be empty/whitespace), #3 height (ditto).
+  \def\dopdfimage#1#2#3{%
+    \def\pdfimagewidth{#2}\setbox0 = \hbox{\ignorespaces #2}%
+    \def\pdfimageheight{#3}\setbox2 = \hbox{\ignorespaces #3}%
+    %
+    % pdftex (and the PDF format) support .pdf, .png, .jpg (among
+    % others).  Let's try in that order, PDF first since if
+    % someone has a scalable image, presumably better to use that than a
+    % bitmap.
+    \let\pdfimgext=\empty
+    \begingroup
+      \openin 1 #1.pdf \ifeof 1
+        \openin 1 #1.PDF \ifeof 1
+          \openin 1 #1.png \ifeof 1
+            \openin 1 #1.jpg \ifeof 1
+              \openin 1 #1.jpeg \ifeof 1
+                \openin 1 #1.JPG \ifeof 1
+                  \errhelp = \nopdfimagehelp
+                  \errmessage{Could not find image file #1 for pdf}%
+                \else \gdef\pdfimgext{JPG}%
+                \fi
+              \else \gdef\pdfimgext{jpeg}%
+              \fi
+            \else \gdef\pdfimgext{jpg}%
+            \fi
+          \else \gdef\pdfimgext{png}%
+          \fi
+        \else \gdef\pdfimgext{PDF}%
+        \fi
+      \else \gdef\pdfimgext{pdf}%
+      \fi
+      \closein 1
+    \endgroup
+    %
+    % without \immediate, ancient pdftex seg faults when the same image is
+    % included twice.  (Version 3.14159-pre-1.0-unofficial-20010704.)
+    \ifnum\pdftexversion < 14
+      \immediate\pdfimage
+    \else
+      \immediate\pdfximage
+    \fi
+      \ifdim \wd0 >0pt width \pdfimagewidth \fi
+      \ifdim \wd2 >0pt height \pdfimageheight \fi
+      \ifnum\pdftexversion<13
+         #1.\pdfimgext
+       \else
+         {#1.\pdfimgext}%
+       \fi
+    \ifnum\pdftexversion < 14 \else
+      \pdfrefximage \pdflastximage
+    \fi}
+  %
+  \def\setpdfdestname#1{{%
+    % We have to set dummies so commands such as @code, and characters
+    % such as \, aren't expanded when present in a section title.
+    \indexnofonts
+    \makevalueexpandable
+    \turnoffactive
+    \iftxiuseunicodedestname
+      \ifx \declaredencoding \latone
+        % Pass through Latin-1 characters.
+        % LuaTeX with byte wise I/O converts Latin-1 characters to Unicode.
+      \else
+        \ifx \declaredencoding \utfeight
+          % Pass through Unicode characters.
+        \else
+          % Use ASCII approximations in destination names.
+          \passthroughcharsfalse
+        \fi
+      \fi
+    \else
+      % Use ASCII approximations in destination names.
+      \passthroughcharsfalse
+    \fi
+    \def\pdfdestname{#1}%
+    \txiescapepdf\pdfdestname
+  }}
+  %
+  \def\setpdfoutlinetext#1{{%
+    \indexnofonts
+    \makevalueexpandable
+    \turnoffactive
+    \ifx \declaredencoding \latone
+      % The PDF format can use an extended form of Latin-1 in bookmark
+      % strings.  See Appendix D of the PDF Reference, Sixth Edition, for
+      % the "PDFDocEncoding".
+      \passthroughcharstrue
+      % Pass through Latin-1 characters.
+      %   LuaTeX: Convert to Unicode
+      %   pdfTeX: Use Latin-1 as PDFDocEncoding
+      \def\pdfoutlinetext{#1}%
+    \else
+      \ifx \declaredencoding \utfeight
+        \ifx\luatexversion\thisisundefined
+          % For pdfTeX  with UTF-8.
+          % TODO: the PDF format can use UTF-16 in bookmark strings,
+          % but the code for this isn't done yet.
+          % Use ASCII approximations.
+          \passthroughcharsfalse
+          \def\pdfoutlinetext{#1}%
+        \else
+          % For LuaTeX with UTF-8.
+          % Pass through Unicode characters for title texts.
+          \passthroughcharstrue
+          \def\pdfoutlinetext{#1}%
+        \fi
+      \else
+        % For non-Latin-1 or non-UTF-8 encodings.
+        % Use ASCII approximations.
+        \passthroughcharsfalse
+        \def\pdfoutlinetext{#1}%
+      \fi
+    \fi
+    % LuaTeX: Convert to UTF-16
+    % pdfTeX: Use Latin-1 as PDFDocEncoding
+    \txiescapepdfutfsixteen\pdfoutlinetext
+  }}
+  %
+  \def\pdfmkdest#1{%
+    \setpdfdestname{#1}%
+    \safewhatsit{\pdfdest name{\pdfdestname} xyz}%
+  }
+  %
+  % used to mark target names; must be expandable.
+  \def\pdfmkpgn#1{#1}
+  %
+  % by default, use black for everything.
+  \def\urlcolor{\rgbBlack}
+  \def\linkcolor{\rgbBlack}
+  \def\endlink{\setcolor{\maincolor}\pdfendlink}
+  %
+  % Adding outlines to PDF; macros for calculating structure of outlines
+  % come from Petr Olsak
+  \def\expnumber#1{\expandafter\ifx\csname#1\endcsname\relax 0%
+    \else \csname#1\endcsname \fi}
+  \def\advancenumber#1{\tempnum=\expnumber{#1}\relax
+    \advance\tempnum by 1
+    \expandafter\xdef\csname#1\endcsname{\the\tempnum}}
+  %
+  % #1 is the section text, which is what will be displayed in the
+  % outline by the pdf viewer.  #2 is the pdf expression for the number
+  % of subentries (or empty, for subsubsections).  #3 is the node text,
+  % which might be empty if this toc entry had no corresponding node.
+  % #4 is the page number
+  %
+  \def\dopdfoutline#1#2#3#4{%
+    % Generate a link to the node text if that exists; else, use the
+    % page number.  We could generate a destination for the section
+    % text in the case where a section has no node, but it doesn't
+    % seem worth the trouble, since most documents are normally structured.
+    \setpdfoutlinetext{#1}
+    \setpdfdestname{#3}
+    \ifx\pdfdestname\empty
+      \def\pdfdestname{#4}%
+    \fi
+    %
+    \pdfoutline goto name{\pdfmkpgn{\pdfdestname}}#2{\pdfoutlinetext}%
+  }
+  %
+  \def\pdfmakeoutlines{%
+    \begingroup
+      % Read toc silently, to get counts of subentries for \pdfoutline.
+      \def\partentry##1##2##3##4{}% ignore parts in the outlines
+      \def\numchapentry##1##2##3##4{%
+	\def\thischapnum{##2}%
+	\def\thissecnum{0}%
+	\def\thissubsecnum{0}%
+      }%
+      \def\numsecentry##1##2##3##4{%
+	\advancenumber{chap\thischapnum}%
+	\def\thissecnum{##2}%
+	\def\thissubsecnum{0}%
+      }%
+      \def\numsubsecentry##1##2##3##4{%
+	\advancenumber{sec\thissecnum}%
+	\def\thissubsecnum{##2}%
+      }%
+      \def\numsubsubsecentry##1##2##3##4{%
+	\advancenumber{subsec\thissubsecnum}%
+      }%
+      \def\thischapnum{0}%
+      \def\thissecnum{0}%
+      \def\thissubsecnum{0}%
+      %
+      % use \def rather than \let here because we redefine \chapentry et
+      % al. a second time, below.
+      \def\appentry{\numchapentry}%
+      \def\appsecentry{\numsecentry}%
+      \def\appsubsecentry{\numsubsecentry}%
+      \def\appsubsubsecentry{\numsubsubsecentry}%
+      \def\unnchapentry{\numchapentry}%
+      \def\unnsecentry{\numsecentry}%
+      \def\unnsubsecentry{\numsubsecentry}%
+      \def\unnsubsubsecentry{\numsubsubsecentry}%
+      \readdatafile{toc}%
+      %
+      % Read toc second time, this time actually producing the outlines.
+      % The `-' means take the \expnumber as the absolute number of
+      % subentries, which we calculated on our first read of the .toc above.
+      %
+      % We use the node names as the destinations.
+      %
+      % Currently we prefix the section name with the section number
+      % for chapter and appendix headings only in order to avoid too much
+      % horizontal space being required in the PDF viewer.
+      \def\numchapentry##1##2##3##4{%
+        \dopdfoutline{##2 ##1}{count-\expnumber{chap##2}}{##3}{##4}}%
+      \def\unnchapentry##1##2##3##4{%
+        \dopdfoutline{##1}{count-\expnumber{chap##2}}{##3}{##4}}%
+      \def\numsecentry##1##2##3##4{%
+        \dopdfoutline{##1}{count-\expnumber{sec##2}}{##3}{##4}}%
+      \def\numsubsecentry##1##2##3##4{%
+        \dopdfoutline{##1}{count-\expnumber{subsec##2}}{##3}{##4}}%
+      \def\numsubsubsecentry##1##2##3##4{% count is always zero
+        \dopdfoutline{##1}{}{##3}{##4}}%
+      %
+      % PDF outlines are displayed using system fonts, instead of
+      % document fonts.  Therefore we cannot use special characters,
+      % since the encoding is unknown.  For example, the eogonek from
+      % Latin 2 (0xea) gets translated to a | character.  Info from
+      % Staszek Wawrykiewicz, 19 Jan 2004 04:09:24 +0100.
+      %
+      % TODO this right, we have to translate 8-bit characters to
+      % their "best" equivalent, based on the @documentencoding.  Too
+      % much work for too little return.  Just use the ASCII equivalents
+      % we use for the index sort strings.
+      %
+      \indexnofonts
+      \setupdatafile
+      % We can have normal brace characters in the PDF outlines, unlike
+      % Texinfo index files.  So set that up.
+      \def\{{\lbracecharliteral}%
+      \def\}{\rbracecharliteral}%
+      \catcode`\\=\active \otherbackslash
+      \input \tocreadfilename
+    \endgroup
+  }
+  {\catcode`[=1 \catcode`]=2
+   \catcode`{=\other \catcode`}=\other
+   \gdef\lbracecharliteral[{]%
+   \gdef\rbracecharliteral[}]%
+  ]
+  %
+  \def\skipspaces#1{\def\PP{#1}\def\D{|}%
+    \ifx\PP\D\let\nextsp\relax
+    \else\let\nextsp\skipspaces
+      \addtokens{\filename}{\PP}%
+      \advance\filenamelength by 1
+    \fi
+    \nextsp}
+  \def\getfilename#1{%
+    \filenamelength=0
+    % If we don't expand the argument now, \skipspaces will get
+    % snagged on things like "@value{foo}".
+    \edef\temp{#1}%
+    \expandafter\skipspaces\temp|\relax
+  }
+  \ifnum\pdftexversion < 14
+    \let \startlink \pdfannotlink
+  \else
+    \let \startlink \pdfstartlink
+  \fi
+  % make a live url in pdf output.
+  \def\pdfurl#1{%
+    \begingroup
+      % it seems we really need yet another set of dummies; have not
+      % tried to figure out what each command should do in the context
+      % of @url.  for now, just make @/ a no-op, that's the only one
+      % people have actually reported a problem with.
+      %
+      \normalturnoffactive
+      \def\@{@}%
+      \let\/=\empty
+      \makevalueexpandable
+      % do we want to go so far as to use \indexnofonts instead of just
+      % special-casing \var here?
+      \def\var##1{##1}%
+      %
+      \leavevmode\setcolor{\urlcolor}%
+      \startlink attr{/Border [0 0 0]}%
+        user{/Subtype /Link /A << /S /URI /URI (#1) >>}%
+    \endgroup}
+  % \pdfgettoks - Surround page numbers in #1 with @pdflink.  #1 may
+  % be a simple number, or a list of numbers in the case of an index
+  % entry.
+  \def\pdfgettoks#1.{\setbox\boxA=\hbox{\toksA={#1.}\toksB={}\maketoks}}
+  \def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks}
+  \def\adn#1{\addtokens{\toksC}{#1}\global\countA=1\let\next=\maketoks}
+  \def\poptoks#1#2|ENDTOKS|{\let\first=#1\toksD={#1}\toksA={#2}}
+  \def\maketoks{%
+    \expandafter\poptoks\the\toksA|ENDTOKS|\relax
+    \ifx\first0\adn0
+    \else\ifx\first1\adn1 \else\ifx\first2\adn2 \else\ifx\first3\adn3
+    \else\ifx\first4\adn4 \else\ifx\first5\adn5 \else\ifx\first6\adn6
+    \else\ifx\first7\adn7 \else\ifx\first8\adn8 \else\ifx\first9\adn9
+    \else
+      \ifnum0=\countA\else\makelink\fi
+      \ifx\first.\let\next=\done\else
+        \let\next=\maketoks
+        \addtokens{\toksB}{\the\toksD}
+        \ifx\first,\addtokens{\toksB}{\space}\fi
+      \fi
+    \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
+    \next}
+  \def\makelink{\addtokens{\toksB}%
+    {\noexpand\pdflink{\the\toksC}}\toksC={}\global\countA=0}
+  \def\pdflink#1{%
+    \startlink attr{/Border [0 0 0]} goto name{\pdfmkpgn{#1}}
+    \setcolor{\linkcolor}#1\endlink}
+  \def\done{\edef\st{\global\noexpand\toksA={\the\toksB}}\st}
+\else
+  % non-pdf mode
+  \let\pdfmkdest = \gobble
+  \let\pdfurl = \gobble
+  \let\endlink = \relax
+  \let\setcolor = \gobble
+  \let\pdfsetcolor = \gobble
+  \let\pdfmakeoutlines = \relax
+\fi  % \ifx\pdfoutput
+
+%
+% For XeTeX
+%
+\ifx\XeTeXrevision\thisisundefined
+\else
+  %
+  % XeTeX version check
+  %
+  \ifnum\strcmp{\the\XeTeXversion\XeTeXrevision}{0.99996}>-1
+    % TeX Live 2016 contains XeTeX 0.99996 and xdvipdfmx 20160307.
+    % It can use the `dvipdfmx:config' special (from TeX Live SVN r40941).
+    % For avoiding PDF destination name replacement, we use this special
+    % instead of xdvipdfmx's command line option `-C 0x0010'.
+    \special{dvipdfmx:config C 0x0010}
+    % XeTeX 0.99995+ comes with xdvipdfmx 20160307+.
+    % It can handle Unicode destination names for PDF.
+    \txiuseunicodedestnametrue
+  \else
+    % XeTeX < 0.99996 (TeX Live < 2016) cannot use the
+    % `dvipdfmx:config' special.
+    % So for avoiding PDF destination name replacement,
+    % xdvipdfmx's command line option `-C 0x0010' is necessary.
+    %
+    % XeTeX < 0.99995 can not handle Unicode destination names for PDF
+    % because xdvipdfmx 20150315 has a UTF-16 conversion issue.
+    % It is fixed by xdvipdfmx 20160106 (TeX Live SVN r39753).
+    \txiuseunicodedestnamefalse
+  \fi
+  %
+  % Color support
+  %
+  \def\rgbDarkRed{0.50 0.09 0.12}
+  \def\rgbBlack{0 0 0}
+  %
+  \def\pdfsetcolor#1{\special{pdf:scolor [#1]}}
+  %
+  % Set color, and create a mark which defines \thiscolor accordingly,
+  % so that \makeheadline knows which color to restore.
+  \def\setcolor#1{%
+    \xdef\currentcolordefs{\gdef\noexpand\thiscolor{#1}}%
+    \domark
+    \pdfsetcolor{#1}%
+  }
+  %
+  \def\maincolor{\rgbBlack}
+  \pdfsetcolor{\maincolor}
+  \edef\thiscolor{\maincolor}
+  \def\currentcolordefs{}
+  %
+  \def\makefootline{%
+    \baselineskip24pt
+    \line{\pdfsetcolor{\maincolor}\the\footline}%
+  }
+  %
+  \def\makeheadline{%
+    \vbox to 0pt{%
+      \vskip-22.5pt
+      \line{%
+        \vbox to8.5pt{}%
+        % Extract \thiscolor definition from the marks.
+        \getcolormarks
+        % Typeset the headline with \maincolor, then restore the color.
+        \pdfsetcolor{\maincolor}\the\headline\pdfsetcolor{\thiscolor}%
+      }%
+      \vss
+    }%
+    \nointerlineskip
+  }
+  %
+  % PDF outline support
+  %
+  % Emulate pdfTeX primitive
+  \def\pdfdest name#1 xyz{%
+    \special{pdf:dest (#1) [@thispage /XYZ @xpos @ypos null]}%
+  }
+  %
+  \def\setpdfdestname#1{{%
+    % We have to set dummies so commands such as @code, and characters
+    % such as \, aren't expanded when present in a section title.
+    \indexnofonts
+    \makevalueexpandable
+    \turnoffactive
+    \iftxiuseunicodedestname
+      % Pass through Unicode characters.
+    \else
+      % Use ASCII approximations in destination names.
+      \passthroughcharsfalse
+    \fi
+    \def\pdfdestname{#1}%
+    \txiescapepdf\pdfdestname
+  }}
+  %
+  \def\setpdfoutlinetext#1{{%
+    \turnoffactive
+    % Always use Unicode characters in title texts.
+    \def\pdfoutlinetext{#1}%
+    % For XeTeX, xdvipdfmx converts to UTF-16.
+    % So we do not convert.
+    \txiescapepdf\pdfoutlinetext
+  }}
+  %
+  \def\pdfmkdest#1{%
+    \setpdfdestname{#1}%
+    \safewhatsit{\pdfdest name{\pdfdestname} xyz}%
+  }
+  %
+  % by default, use black for everything.
+  \def\urlcolor{\rgbBlack}
+  \def\linkcolor{\rgbBlack}
+  \def\endlink{\setcolor{\maincolor}\pdfendlink}
+  %
+  \def\dopdfoutline#1#2#3#4{%
+    \setpdfoutlinetext{#1}
+    \setpdfdestname{#3}
+    \ifx\pdfdestname\empty
+      \def\pdfdestname{#4}%
+    \fi
+    %
+    \special{pdf:out [-] #2 << /Title (\pdfoutlinetext) /A
+      << /S /GoTo /D (\pdfdestname) >> >> }%
+  }
+  %
+  \def\pdfmakeoutlines{%
+    \begingroup
+      %
+      % For XeTeX, counts of subentries are not necessary.
+      % Therefore, we read toc only once.
+      %
+      % We use node names as destinations.
+      %
+      % Currently we prefix the section name with the section number
+      % for chapter and appendix headings only in order to avoid too much
+      % horizontal space being required in the PDF viewer.
+      \def\partentry##1##2##3##4{}% ignore parts in the outlines
+      \def\numchapentry##1##2##3##4{%
+        \dopdfoutline{##2 ##1}{1}{##3}{##4}}%
+      \def\numsecentry##1##2##3##4{%
+        \dopdfoutline{##1}{2}{##3}{##4}}%
+      \def\numsubsecentry##1##2##3##4{%
+        \dopdfoutline{##1}{3}{##3}{##4}}%
+      \def\numsubsubsecentry##1##2##3##4{%
+        \dopdfoutline{##1}{4}{##3}{##4}}%
+      %
+      \let\appentry\numchapentry%
+      \let\appsecentry\numsecentry%
+      \let\appsubsecentry\numsubsecentry%
+      \let\appsubsubsecentry\numsubsubsecentry%
+      \def\unnchapentry##1##2##3##4{%
+        \dopdfoutline{##1}{1}{##3}{##4}}%
+      \let\unnsecentry\numsecentry%
+      \let\unnsubsecentry\numsubsecentry%
+      \let\unnsubsubsecentry\numsubsubsecentry%
+      %
+      % For XeTeX, xdvipdfmx converts strings to UTF-16.
+      % Therefore, the encoding and the language may not be considered.
+      %
+      \indexnofonts
+      \setupdatafile
+      % We can have normal brace characters in the PDF outlines, unlike
+      % Texinfo index files.  So set that up.
+      \def\{{\lbracecharliteral}%
+      \def\}{\rbracecharliteral}%
+      \catcode`\\=\active \otherbackslash
+      \input \tocreadfilename
+    \endgroup
+  }
+  {\catcode`[=1 \catcode`]=2
+   \catcode`{=\other \catcode`}=\other
+   \gdef\lbracecharliteral[{]%
+   \gdef\rbracecharliteral[}]%
+  ]
+
+  \special{pdf:docview << /PageMode /UseOutlines >> }
+  % ``\special{pdf:tounicode ...}'' is not necessary
+  % because xdvipdfmx converts strings from UTF-8 to UTF-16 without it.
+  % However, due to a UTF-16 conversion issue of xdvipdfmx 20150315,
+  % ``\special{pdf:dest ...}'' cannot handle non-ASCII strings.
+  % It is fixed by xdvipdfmx 20160106 (TeX Live SVN r39753).
+%
+  \def\skipspaces#1{\def\PP{#1}\def\D{|}%
+    \ifx\PP\D\let\nextsp\relax
+    \else\let\nextsp\skipspaces
+      \addtokens{\filename}{\PP}%
+      \advance\filenamelength by 1
+    \fi
+    \nextsp}
+  \def\getfilename#1{%
+    \filenamelength=0
+    % If we don't expand the argument now, \skipspaces will get
+    % snagged on things like "@value{foo}".
+    \edef\temp{#1}%
+    \expandafter\skipspaces\temp|\relax
+  }
+  % make a live url in pdf output.
+  \def\pdfurl#1{%
+    \begingroup
+      % it seems we really need yet another set of dummies; have not
+      % tried to figure out what each command should do in the context
+      % of @url.  for now, just make @/ a no-op, that's the only one
+      % people have actually reported a problem with.
+      %
+      \normalturnoffactive
+      \def\@{@}%
+      \let\/=\empty
+      \makevalueexpandable
+      % do we want to go so far as to use \indexnofonts instead of just
+      % special-casing \var here?
+      \def\var##1{##1}%
+      %
+      \leavevmode\setcolor{\urlcolor}%
+      \special{pdf:bann << /Border [0 0 0]
+        /Subtype /Link /A << /S /URI /URI (#1) >> >>}%
+    \endgroup}
+  \def\endlink{\setcolor{\maincolor}\special{pdf:eann}}
+  \def\pdfgettoks#1.{\setbox\boxA=\hbox{\toksA={#1.}\toksB={}\maketoks}}
+  \def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks}
+  \def\adn#1{\addtokens{\toksC}{#1}\global\countA=1\let\next=\maketoks}
+  \def\poptoks#1#2|ENDTOKS|{\let\first=#1\toksD={#1}\toksA={#2}}
+  \def\maketoks{%
+    \expandafter\poptoks\the\toksA|ENDTOKS|\relax
+    \ifx\first0\adn0
+    \else\ifx\first1\adn1 \else\ifx\first2\adn2 \else\ifx\first3\adn3
+    \else\ifx\first4\adn4 \else\ifx\first5\adn5 \else\ifx\first6\adn6
+    \else\ifx\first7\adn7 \else\ifx\first8\adn8 \else\ifx\first9\adn9
+    \else
+      \ifnum0=\countA\else\makelink\fi
+      \ifx\first.\let\next=\done\else
+        \let\next=\maketoks
+        \addtokens{\toksB}{\the\toksD}
+        \ifx\first,\addtokens{\toksB}{\space}\fi
+      \fi
+    \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
+    \next}
+  \def\makelink{\addtokens{\toksB}%
+    {\noexpand\pdflink{\the\toksC}}\toksC={}\global\countA=0}
+  \def\pdflink#1{%
+    \special{pdf:bann << /Border [0 0 0]
+      /Type /Annot /Subtype /Link /A << /S /GoTo /D (#1) >> >>}%
+    \setcolor{\linkcolor}#1\endlink}
+  \def\done{\edef\st{\global\noexpand\toksA={\the\toksB}}\st}
+%
+  %
+  % @image support
+  %
+  % #1 is image name, #2 width (might be empty/whitespace), #3 height (ditto).
+  \def\doxeteximage#1#2#3{%
+    \def\xeteximagewidth{#2}\setbox0 = \hbox{\ignorespaces #2}%
+    \def\xeteximageheight{#3}\setbox2 = \hbox{\ignorespaces #3}%
+    %
+    % XeTeX (and the PDF format) supports .pdf, .png, .jpg (among
+    % others).  Let's try in that order, PDF first since if
+    % someone has a scalable image, presumably better to use that than a
+    % bitmap.
+    \let\xeteximgext=\empty
+    \begingroup
+      \openin 1 #1.pdf \ifeof 1
+        \openin 1 #1.PDF \ifeof 1
+          \openin 1 #1.png \ifeof 1
+            \openin 1 #1.jpg \ifeof 1
+              \openin 1 #1.jpeg \ifeof 1
+                \openin 1 #1.JPG \ifeof 1
+                  \errmessage{Could not find image file #1 for XeTeX}%
+                \else \gdef\xeteximgext{JPG}%
+                \fi
+              \else \gdef\xeteximgext{jpeg}%
+              \fi
+            \else \gdef\xeteximgext{jpg}%
+            \fi
+          \else \gdef\xeteximgext{png}%
+          \fi
+        \else \gdef\xeteximgext{PDF}%
+        \fi
+      \else \gdef\xeteximgext{pdf}%
+      \fi
+      \closein 1
+    \endgroup
+    %
+    % Putting an \hbox around the image can prevent an over-long line
+    % after the image.
+    \hbox\bgroup
+      \def\xetexpdfext{pdf}%
+      \ifx\xeteximgext\xetexpdfext
+        \XeTeXpdffile "#1".\xeteximgext ""
+      \else
+        \def\xetexpdfext{PDF}%
+        \ifx\xeteximgext\xetexpdfext
+          \XeTeXpdffile "#1".\xeteximgext ""
+        \else
+          \XeTeXpicfile "#1".\xeteximgext ""
+        \fi
+      \fi
+      \ifdim \wd0 >0pt width \xeteximagewidth \fi
+      \ifdim \wd2 >0pt height \xeteximageheight \fi \relax
+    \egroup
+  }
+\fi
+
+
+%
+\message{fonts,}
+
+% Set the baselineskip to #1, and the lineskip and strut size
+% correspondingly.  There is no deep meaning behind these magic numbers
+% used as factors; they just match (closely enough) what Knuth defined.
+%
+\def\lineskipfactor{.08333}
+\def\strutheightpercent{.70833}
+\def\strutdepthpercent {.29167}
+%
+% can get a sort of poor man's double spacing by redefining this.
+\def\baselinefactor{1}
+%
+\newdimen\textleading
+\def\setleading#1{%
+  \dimen0 = #1\relax
+  \normalbaselineskip = \baselinefactor\dimen0
+  \normallineskip = \lineskipfactor\normalbaselineskip
+  \normalbaselines
+  \setbox\strutbox =\hbox{%
+    \vrule width0pt height\strutheightpercent\baselineskip
+                    depth \strutdepthpercent \baselineskip
+  }%
+}
+
+% PDF CMaps.  See also LaTeX's t1.cmap.
+%
+% do nothing with this by default.
+\expandafter\let\csname cmapOT1\endcsname\gobble
+\expandafter\let\csname cmapOT1IT\endcsname\gobble
+\expandafter\let\csname cmapOT1TT\endcsname\gobble
+
+% if we are producing pdf, and we have \pdffontattr, then define cmaps.
+% (\pdffontattr was introduced many years ago, but people still run
+% older pdftex's; it's easy to conditionalize, so we do.)
+\ifpdf \ifx\pdffontattr\thisisundefined \else
+  \begingroup
+    \catcode`\^^M=\active \def^^M{^^J}% Output line endings as the ^^J char.
+    \catcode`\%=12 \immediate\pdfobj stream {%!PS-Adobe-3.0 Resource-CMap
+%%DocumentNeededResources: ProcSet (CIDInit)
+%%IncludeResource: ProcSet (CIDInit)
+%%BeginResource: CMap (TeX-OT1-0)
+%%Title: (TeX-OT1-0 TeX OT1 0)
+%%Version: 1.000
+%%EndComments
+/CIDInit /ProcSet findresource begin
+12 dict begin
+begincmap
+/CIDSystemInfo
+<< /Registry (TeX)
+/Ordering (OT1)
+/Supplement 0
+>> def
+/CMapName /TeX-OT1-0 def
+/CMapType 2 def
+1 begincodespacerange
+<00> <7F>
+endcodespacerange
+8 beginbfrange
+<00> <01> <0393>
+<09> <0A> <03A8>
+<23> <26> <0023>
+<28> <3B> <0028>
+<3F> <5B> <003F>
+<5D> <5E> <005D>
+<61> <7A> <0061>
+<7B> <7C> <2013>
+endbfrange
+40 beginbfchar
+<02> <0398>
+<03> <039B>
+<04> <039E>
+<05> <03A0>
+<06> <03A3>
+<07> <03D2>
+<08> <03A6>
+<0B> <00660066>
+<0C> <00660069>
+<0D> <0066006C>
+<0E> <006600660069>
+<0F> <00660066006C>
+<10> <0131>
+<11> <0237>
+<12> <0060>
+<13> <00B4>
+<14> <02C7>
+<15> <02D8>
+<16> <00AF>
+<17> <02DA>
+<18> <00B8>
+<19> <00DF>
+<1A> <00E6>
+<1B> <0153>
+<1C> <00F8>
+<1D> <00C6>
+<1E> <0152>
+<1F> <00D8>
+<21> <0021>
+<22> <201D>
+<27> <2019>
+<3C> <00A1>
+<3D> <003D>
+<3E> <00BF>
+<5C> <201C>
+<5F> <02D9>
+<60> <2018>
+<7D> <02DD>
+<7E> <007E>
+<7F> <00A8>
+endbfchar
+endcmap
+CMapName currentdict /CMap defineresource pop
+end
+end
+%%EndResource
+%%EOF
+    }\endgroup
+  \expandafter\edef\csname cmapOT1\endcsname#1{%
+    \pdffontattr#1{/ToUnicode \the\pdflastobj\space 0 R}%
+  }%
+%
+% \cmapOT1IT
+  \begingroup
+    \catcode`\^^M=\active \def^^M{^^J}% Output line endings as the ^^J char.
+    \catcode`\%=12 \immediate\pdfobj stream {%!PS-Adobe-3.0 Resource-CMap
+%%DocumentNeededResources: ProcSet (CIDInit)
+%%IncludeResource: ProcSet (CIDInit)
+%%BeginResource: CMap (TeX-OT1IT-0)
+%%Title: (TeX-OT1IT-0 TeX OT1IT 0)
+%%Version: 1.000
+%%EndComments
+/CIDInit /ProcSet findresource begin
+12 dict begin
+begincmap
+/CIDSystemInfo
+<< /Registry (TeX)
+/Ordering (OT1IT)
+/Supplement 0
+>> def
+/CMapName /TeX-OT1IT-0 def
+/CMapType 2 def
+1 begincodespacerange
+<00> <7F>
+endcodespacerange
+8 beginbfrange
+<00> <01> <0393>
+<09> <0A> <03A8>
+<25> <26> <0025>
+<28> <3B> <0028>
+<3F> <5B> <003F>
+<5D> <5E> <005D>
+<61> <7A> <0061>
+<7B> <7C> <2013>
+endbfrange
+42 beginbfchar
+<02> <0398>
+<03> <039B>
+<04> <039E>
+<05> <03A0>
+<06> <03A3>
+<07> <03D2>
+<08> <03A6>
+<0B> <00660066>
+<0C> <00660069>
+<0D> <0066006C>
+<0E> <006600660069>
+<0F> <00660066006C>
+<10> <0131>
+<11> <0237>
+<12> <0060>
+<13> <00B4>
+<14> <02C7>
+<15> <02D8>
+<16> <00AF>
+<17> <02DA>
+<18> <00B8>
+<19> <00DF>
+<1A> <00E6>
+<1B> <0153>
+<1C> <00F8>
+<1D> <00C6>
+<1E> <0152>
+<1F> <00D8>
+<21> <0021>
+<22> <201D>
+<23> <0023>
+<24> <00A3>
+<27> <2019>
+<3C> <00A1>
+<3D> <003D>
+<3E> <00BF>
+<5C> <201C>
+<5F> <02D9>
+<60> <2018>
+<7D> <02DD>
+<7E> <007E>
+<7F> <00A8>
+endbfchar
+endcmap
+CMapName currentdict /CMap defineresource pop
+end
+end
+%%EndResource
+%%EOF
+    }\endgroup
+  \expandafter\edef\csname cmapOT1IT\endcsname#1{%
+    \pdffontattr#1{/ToUnicode \the\pdflastobj\space 0 R}%
+  }%
+%
+% \cmapOT1TT
+  \begingroup
+    \catcode`\^^M=\active \def^^M{^^J}% Output line endings as the ^^J char.
+    \catcode`\%=12 \immediate\pdfobj stream {%!PS-Adobe-3.0 Resource-CMap
+%%DocumentNeededResources: ProcSet (CIDInit)
+%%IncludeResource: ProcSet (CIDInit)
+%%BeginResource: CMap (TeX-OT1TT-0)
+%%Title: (TeX-OT1TT-0 TeX OT1TT 0)
+%%Version: 1.000
+%%EndComments
+/CIDInit /ProcSet findresource begin
+12 dict begin
+begincmap
+/CIDSystemInfo
+<< /Registry (TeX)
+/Ordering (OT1TT)
+/Supplement 0
+>> def
+/CMapName /TeX-OT1TT-0 def
+/CMapType 2 def
+1 begincodespacerange
+<00> <7F>
+endcodespacerange
+5 beginbfrange
+<00> <01> <0393>
+<09> <0A> <03A8>
+<21> <26> <0021>
+<28> <5F> <0028>
+<61> <7E> <0061>
+endbfrange
+32 beginbfchar
+<02> <0398>
+<03> <039B>
+<04> <039E>
+<05> <03A0>
+<06> <03A3>
+<07> <03D2>
+<08> <03A6>
+<0B> <2191>
+<0C> <2193>
+<0D> <0027>
+<0E> <00A1>
+<0F> <00BF>
+<10> <0131>
+<11> <0237>
+<12> <0060>
+<13> <00B4>
+<14> <02C7>
+<15> <02D8>
+<16> <00AF>
+<17> <02DA>
+<18> <00B8>
+<19> <00DF>
+<1A> <00E6>
+<1B> <0153>
+<1C> <00F8>
+<1D> <00C6>
+<1E> <0152>
+<1F> <00D8>
+<20> <2423>
+<27> <2019>
+<60> <2018>
+<7F> <00A8>
+endbfchar
+endcmap
+CMapName currentdict /CMap defineresource pop
+end
+end
+%%EndResource
+%%EOF
+    }\endgroup
+  \expandafter\edef\csname cmapOT1TT\endcsname#1{%
+    \pdffontattr#1{/ToUnicode \the\pdflastobj\space 0 R}%
+  }%
+\fi\fi
+
+
+% Set the font macro #1 to the font named \fontprefix#2.
+% #3 is the font's design size, #4 is a scale factor, #5 is the CMap
+% encoding (only OT1, OT1IT and OT1TT are allowed, or empty to omit).
+% Example:
+% #1 = \textrm
+% #2 = \rmshape
+% #3 = 10
+% #4 = \mainmagstep
+% #5 = OT1
+%
+\def\setfont#1#2#3#4#5{%
+  \font#1=\fontprefix#2#3 scaled #4
+  \csname cmap#5\endcsname#1%
+}
+% This is what gets called when #5 of \setfont is empty.
+\let\cmap\gobble
+%
+% (end of cmaps)
+
+% Use cm as the default font prefix.
+% To specify the font prefix, you must define \fontprefix
+% before you read in texinfo.tex.
+\ifx\fontprefix\thisisundefined
+\def\fontprefix{cm}
+\fi
+% Support font families that don't use the same naming scheme as CM.
+\def\rmshape{r}
+\def\rmbshape{bx}               % where the normal face is bold
+\def\bfshape{b}
+\def\bxshape{bx}
+\def\ttshape{tt}
+\def\ttbshape{tt}
+\def\ttslshape{sltt}
+\def\itshape{ti}
+\def\itbshape{bxti}
+\def\slshape{sl}
+\def\slbshape{bxsl}
+\def\sfshape{ss}
+\def\sfbshape{ss}
+\def\scshape{csc}
+\def\scbshape{csc}
+
+% Definitions for a main text size of 11pt.  (The default in Texinfo.)
+%
+\def\definetextfontsizexi{%
+% Text fonts (11.2pt, magstep1).
+\def\textnominalsize{11pt}
+\edef\mainmagstep{\magstephalf}
+\setfont\textrm\rmshape{10}{\mainmagstep}{OT1}
+\setfont\texttt\ttshape{10}{\mainmagstep}{OT1TT}
+\setfont\textbf\bfshape{10}{\mainmagstep}{OT1}
+\setfont\textit\itshape{10}{\mainmagstep}{OT1IT}
+\setfont\textsl\slshape{10}{\mainmagstep}{OT1}
+\setfont\textsf\sfshape{10}{\mainmagstep}{OT1}
+\setfont\textsc\scshape{10}{\mainmagstep}{OT1}
+\setfont\textttsl\ttslshape{10}{\mainmagstep}{OT1TT}
+\font\texti=cmmi10 scaled \mainmagstep
+\font\textsy=cmsy10 scaled \mainmagstep
+\def\textecsize{1095}
+
+% A few fonts for @defun names and args.
+\setfont\defbf\bfshape{10}{\magstep1}{OT1}
+\setfont\deftt\ttshape{10}{\magstep1}{OT1TT}
+\setfont\defsl\slshape{10}{\magstep1}{OT1}
+\setfont\defttsl\ttslshape{10}{\magstep1}{OT1TT}
+\def\df{\let\ttfont=\deftt \let\bffont = \defbf
+\let\ttslfont=\defttsl \let\slfont=\defsl \bf}
+
+% Fonts for indices, footnotes, small examples (9pt).
+\def\smallnominalsize{9pt}
+\setfont\smallrm\rmshape{9}{1000}{OT1}
+\setfont\smalltt\ttshape{9}{1000}{OT1TT}
+\setfont\smallbf\bfshape{10}{900}{OT1}
+\setfont\smallit\itshape{9}{1000}{OT1IT}
+\setfont\smallsl\slshape{9}{1000}{OT1}
+\setfont\smallsf\sfshape{9}{1000}{OT1}
+\setfont\smallsc\scshape{10}{900}{OT1}
+\setfont\smallttsl\ttslshape{10}{900}{OT1TT}
+\font\smalli=cmmi9
+\font\smallsy=cmsy9
+\def\smallecsize{0900}
+
+% Fonts for small examples (8pt).
+\def\smallernominalsize{8pt}
+\setfont\smallerrm\rmshape{8}{1000}{OT1}
+\setfont\smallertt\ttshape{8}{1000}{OT1TT}
+\setfont\smallerbf\bfshape{10}{800}{OT1}
+\setfont\smallerit\itshape{8}{1000}{OT1IT}
+\setfont\smallersl\slshape{8}{1000}{OT1}
+\setfont\smallersf\sfshape{8}{1000}{OT1}
+\setfont\smallersc\scshape{10}{800}{OT1}
+\setfont\smallerttsl\ttslshape{10}{800}{OT1TT}
+\font\smalleri=cmmi8
+\font\smallersy=cmsy8
+\def\smallerecsize{0800}
+
+% Fonts for math mode superscripts (7pt).
+\def\sevennominalsize{7pt}
+\setfont\sevenrm\rmshape{7}{1000}{OT1}
+\setfont\seventt\ttshape{10}{700}{OT1TT}
+\setfont\sevenbf\bfshape{10}{700}{OT1}
+\setfont\sevenit\itshape{7}{1000}{OT1IT}
+\setfont\sevensl\slshape{10}{700}{OT1}
+\setfont\sevensf\sfshape{10}{700}{OT1}
+\setfont\sevensc\scshape{10}{700}{OT1}
+\setfont\seventtsl\ttslshape{10}{700}{OT1TT}
+\font\seveni=cmmi7
+\font\sevensy=cmsy7
+\def\sevenecsize{0700}
+
+% Fonts for title page (20.4pt):
+\def\titlenominalsize{20pt}
+\setfont\titlerm\rmbshape{12}{\magstep3}{OT1}
+\setfont\titleit\itbshape{10}{\magstep4}{OT1IT}
+\setfont\titlesl\slbshape{10}{\magstep4}{OT1}
+\setfont\titlett\ttbshape{12}{\magstep3}{OT1TT}
+\setfont\titlettsl\ttslshape{10}{\magstep4}{OT1TT}
+\setfont\titlesf\sfbshape{17}{\magstep1}{OT1}
+\let\titlebf=\titlerm
+\setfont\titlesc\scbshape{10}{\magstep4}{OT1}
+\font\titlei=cmmi12 scaled \magstep3
+\font\titlesy=cmsy10 scaled \magstep4
+\def\titleecsize{2074}
+
+% Chapter (and unnumbered) fonts (17.28pt).
+\def\chapnominalsize{17pt}
+\setfont\chaprm\rmbshape{12}{\magstep2}{OT1}
+\setfont\chapit\itbshape{10}{\magstep3}{OT1IT}
+\setfont\chapsl\slbshape{10}{\magstep3}{OT1}
+\setfont\chaptt\ttbshape{12}{\magstep2}{OT1TT}
+\setfont\chapttsl\ttslshape{10}{\magstep3}{OT1TT}
+\setfont\chapsf\sfbshape{17}{1000}{OT1}
+\let\chapbf=\chaprm
+\setfont\chapsc\scbshape{10}{\magstep3}{OT1}
+\font\chapi=cmmi12 scaled \magstep2
+\font\chapsy=cmsy10 scaled \magstep3
+\def\chapecsize{1728}
+
+% Section fonts (14.4pt).
+\def\secnominalsize{14pt}
+\setfont\secrm\rmbshape{12}{\magstep1}{OT1}
+\setfont\secrmnotbold\rmshape{12}{\magstep1}{OT1}
+\setfont\secit\itbshape{10}{\magstep2}{OT1IT}
+\setfont\secsl\slbshape{10}{\magstep2}{OT1}
+\setfont\sectt\ttbshape{12}{\magstep1}{OT1TT}
+\setfont\secttsl\ttslshape{10}{\magstep2}{OT1TT}
+\setfont\secsf\sfbshape{12}{\magstep1}{OT1}
+\let\secbf\secrm
+\setfont\secsc\scbshape{10}{\magstep2}{OT1}
+\font\seci=cmmi12 scaled \magstep1
+\font\secsy=cmsy10 scaled \magstep2
+\def\sececsize{1440}
+
+% Subsection fonts (13.15pt).
+\def\ssecnominalsize{13pt}
+\setfont\ssecrm\rmbshape{12}{\magstephalf}{OT1}
+\setfont\ssecit\itbshape{10}{1315}{OT1IT}
+\setfont\ssecsl\slbshape{10}{1315}{OT1}
+\setfont\ssectt\ttbshape{12}{\magstephalf}{OT1TT}
+\setfont\ssecttsl\ttslshape{10}{1315}{OT1TT}
+\setfont\ssecsf\sfbshape{12}{\magstephalf}{OT1}
+\let\ssecbf\ssecrm
+\setfont\ssecsc\scbshape{10}{1315}{OT1}
+\font\sseci=cmmi12 scaled \magstephalf
+\font\ssecsy=cmsy10 scaled 1315
+\def\ssececsize{1200}
+
+% Reduced fonts for @acronym in text (10pt).
+\def\reducednominalsize{10pt}
+\setfont\reducedrm\rmshape{10}{1000}{OT1}
+\setfont\reducedtt\ttshape{10}{1000}{OT1TT}
+\setfont\reducedbf\bfshape{10}{1000}{OT1}
+\setfont\reducedit\itshape{10}{1000}{OT1IT}
+\setfont\reducedsl\slshape{10}{1000}{OT1}
+\setfont\reducedsf\sfshape{10}{1000}{OT1}
+\setfont\reducedsc\scshape{10}{1000}{OT1}
+\setfont\reducedttsl\ttslshape{10}{1000}{OT1TT}
+\font\reducedi=cmmi10
+\font\reducedsy=cmsy10
+\def\reducedecsize{1000}
+
+\textleading = 13.2pt % line spacing for 11pt CM
+\textfonts            % reset the current fonts
+\rm
+} % end of 11pt text font size definitions, \definetextfontsizexi
+
+
+% Definitions to make the main text be 10pt Computer Modern, with
+% section, chapter, etc., sizes following suit.  This is for the GNU
+% Press printing of the Emacs 22 manual.  Maybe other manuals in the
+% future.  Used with @smallbook, which sets the leading to 12pt.
+%
+\def\definetextfontsizex{%
+% Text fonts (10pt).
+\def\textnominalsize{10pt}
+\edef\mainmagstep{1000}
+\setfont\textrm\rmshape{10}{\mainmagstep}{OT1}
+\setfont\texttt\ttshape{10}{\mainmagstep}{OT1TT}
+\setfont\textbf\bfshape{10}{\mainmagstep}{OT1}
+\setfont\textit\itshape{10}{\mainmagstep}{OT1IT}
+\setfont\textsl\slshape{10}{\mainmagstep}{OT1}
+\setfont\textsf\sfshape{10}{\mainmagstep}{OT1}
+\setfont\textsc\scshape{10}{\mainmagstep}{OT1}
+\setfont\textttsl\ttslshape{10}{\mainmagstep}{OT1TT}
+\font\texti=cmmi10 scaled \mainmagstep
+\font\textsy=cmsy10 scaled \mainmagstep
+\def\textecsize{1000}
+
+% A few fonts for @defun names and args.
+\setfont\defbf\bfshape{10}{\magstephalf}{OT1}
+\setfont\deftt\ttshape{10}{\magstephalf}{OT1TT}
+\setfont\defsl\slshape{10}{\magstephalf}{OT1}
+\setfont\defttsl\ttslshape{10}{\magstephalf}{OT1TT}
+\def\df{\let\ttfont=\deftt \let\bffont = \defbf
+\let\slfont=\defsl \let\ttslfont=\defttsl \bf}
+
+% Fonts for indices, footnotes, small examples (9pt).
+\def\smallnominalsize{9pt}
+\setfont\smallrm\rmshape{9}{1000}{OT1}
+\setfont\smalltt\ttshape{9}{1000}{OT1TT}
+\setfont\smallbf\bfshape{10}{900}{OT1}
+\setfont\smallit\itshape{9}{1000}{OT1IT}
+\setfont\smallsl\slshape{9}{1000}{OT1}
+\setfont\smallsf\sfshape{9}{1000}{OT1}
+\setfont\smallsc\scshape{10}{900}{OT1}
+\setfont\smallttsl\ttslshape{10}{900}{OT1TT}
+\font\smalli=cmmi9
+\font\smallsy=cmsy9
+\def\smallecsize{0900}
+
+% Fonts for small examples (8pt).
+\def\smallernominalsize{8pt}
+\setfont\smallerrm\rmshape{8}{1000}{OT1}
+\setfont\smallertt\ttshape{8}{1000}{OT1TT}
+\setfont\smallerbf\bfshape{10}{800}{OT1}
+\setfont\smallerit\itshape{8}{1000}{OT1IT}
+\setfont\smallersl\slshape{8}{1000}{OT1}
+\setfont\smallersf\sfshape{8}{1000}{OT1}
+\setfont\smallersc\scshape{10}{800}{OT1}
+\setfont\smallerttsl\ttslshape{10}{800}{OT1TT}
+\font\smalleri=cmmi8
+\font\smallersy=cmsy8
+\def\smallerecsize{0800}
+
+% Fonts for math mode superscripts (7pt).
+\def\sevennominalsize{7pt}
+\setfont\sevenrm\rmshape{7}{1000}{OT1}
+\setfont\seventt\ttshape{10}{700}{OT1TT}
+\setfont\sevenbf\bfshape{10}{700}{OT1}
+\setfont\sevenit\itshape{7}{1000}{OT1IT}
+\setfont\sevensl\slshape{10}{700}{OT1}
+\setfont\sevensf\sfshape{10}{700}{OT1}
+\setfont\sevensc\scshape{10}{700}{OT1}
+\setfont\seventtsl\ttslshape{10}{700}{OT1TT}
+\font\seveni=cmmi7
+\font\sevensy=cmsy7
+\def\sevenecsize{0700}
+
+% Fonts for title page (20.4pt):
+\def\titlenominalsize{20pt}
+\setfont\titlerm\rmbshape{12}{\magstep3}{OT1}
+\setfont\titleit\itbshape{10}{\magstep4}{OT1IT}
+\setfont\titlesl\slbshape{10}{\magstep4}{OT1}
+\setfont\titlett\ttbshape{12}{\magstep3}{OT1TT}
+\setfont\titlettsl\ttslshape{10}{\magstep4}{OT1TT}
+\setfont\titlesf\sfbshape{17}{\magstep1}{OT1}
+\let\titlebf=\titlerm
+\setfont\titlesc\scbshape{10}{\magstep4}{OT1}
+\font\titlei=cmmi12 scaled \magstep3
+\font\titlesy=cmsy10 scaled \magstep4
+\def\titleecsize{2074}
+
+% Chapter fonts (14.4pt).
+\def\chapnominalsize{14pt}
+\setfont\chaprm\rmbshape{12}{\magstep1}{OT1}
+\setfont\chapit\itbshape{10}{\magstep2}{OT1IT}
+\setfont\chapsl\slbshape{10}{\magstep2}{OT1}
+\setfont\chaptt\ttbshape{12}{\magstep1}{OT1TT}
+\setfont\chapttsl\ttslshape{10}{\magstep2}{OT1TT}
+\setfont\chapsf\sfbshape{12}{\magstep1}{OT1}
+\let\chapbf\chaprm
+\setfont\chapsc\scbshape{10}{\magstep2}{OT1}
+\font\chapi=cmmi12 scaled \magstep1
+\font\chapsy=cmsy10 scaled \magstep2
+\def\chapecsize{1440}
+
+% Section fonts (12pt).
+\def\secnominalsize{12pt}
+\setfont\secrm\rmbshape{12}{1000}{OT1}
+\setfont\secit\itbshape{10}{\magstep1}{OT1IT}
+\setfont\secsl\slbshape{10}{\magstep1}{OT1}
+\setfont\sectt\ttbshape{12}{1000}{OT1TT}
+\setfont\secttsl\ttslshape{10}{\magstep1}{OT1TT}
+\setfont\secsf\sfbshape{12}{1000}{OT1}
+\let\secbf\secrm
+\setfont\secsc\scbshape{10}{\magstep1}{OT1}
+\font\seci=cmmi12
+\font\secsy=cmsy10 scaled \magstep1
+\def\sececsize{1200}
+
+% Subsection fonts (10pt).
+\def\ssecnominalsize{10pt}
+\setfont\ssecrm\rmbshape{10}{1000}{OT1}
+\setfont\ssecit\itbshape{10}{1000}{OT1IT}
+\setfont\ssecsl\slbshape{10}{1000}{OT1}
+\setfont\ssectt\ttbshape{10}{1000}{OT1TT}
+\setfont\ssecttsl\ttslshape{10}{1000}{OT1TT}
+\setfont\ssecsf\sfbshape{10}{1000}{OT1}
+\let\ssecbf\ssecrm
+\setfont\ssecsc\scbshape{10}{1000}{OT1}
+\font\sseci=cmmi10
+\font\ssecsy=cmsy10
+\def\ssececsize{1000}
+
+% Reduced fonts for @acronym in text (9pt).
+\def\reducednominalsize{9pt}
+\setfont\reducedrm\rmshape{9}{1000}{OT1}
+\setfont\reducedtt\ttshape{9}{1000}{OT1TT}
+\setfont\reducedbf\bfshape{10}{900}{OT1}
+\setfont\reducedit\itshape{9}{1000}{OT1IT}
+\setfont\reducedsl\slshape{9}{1000}{OT1}
+\setfont\reducedsf\sfshape{9}{1000}{OT1}
+\setfont\reducedsc\scshape{10}{900}{OT1}
+\setfont\reducedttsl\ttslshape{10}{900}{OT1TT}
+\font\reducedi=cmmi9
+\font\reducedsy=cmsy9
+\def\reducedecsize{0900}
+
+\divide\parskip by 2  % reduce space between paragraphs
+\textleading = 12pt   % line spacing for 10pt CM
+\textfonts            % reset the current fonts
+\rm
+} % end of 10pt text font size definitions, \definetextfontsizex
+
+% Fonts for short table of contents.
+\setfont\shortcontrm\rmshape{12}{1000}{OT1}
+\setfont\shortcontbf\bfshape{10}{\magstep1}{OT1}  % no cmb12
+\setfont\shortcontsl\slshape{12}{1000}{OT1}
+\setfont\shortconttt\ttshape{12}{1000}{OT1TT}
+
+
+% We provide the user-level command
+%   @fonttextsize 10
+% (or 11) to redefine the text font size.  pt is assumed.
+%
+\def\xiword{11}
+\def\xword{10}
+\def\xwordpt{10pt}
+%
+\parseargdef\fonttextsize{%
+  \def\textsizearg{#1}%
+  %\wlog{doing @fonttextsize \textsizearg}%
+  %
+  % Set \globaldefs so that documents can use this inside @tex, since
+  % makeinfo 4.8 does not support it, but we need it nonetheless.
+  %
+ \begingroup \globaldefs=1
+  \ifx\textsizearg\xword \definetextfontsizex
+  \else \ifx\textsizearg\xiword \definetextfontsizexi
+  \else
+    \errhelp=\EMsimple
+    \errmessage{@fonttextsize only supports `10' or `11', not `\textsizearg'}
+  \fi\fi
+ \endgroup
+}
+
+%
+% Change the current font style to #1, remembering it in \curfontstyle.
+% For now, we do not accumulate font styles: @b{@i{foo}} prints foo in
+% italics, not bold italics.
+%
+\def\setfontstyle#1{%
+  \def\curfontstyle{#1}% not as a control sequence, because we are \edef'd.
+  \csname #1font\endcsname  % change the current font
+}
+
+\def\rm{\fam=0 \setfontstyle{rm}}
+\def\it{\fam=\itfam \setfontstyle{it}}
+\def\sl{\fam=\slfam \setfontstyle{sl}}
+\def\bf{\fam=\bffam \setfontstyle{bf}}\def\bfstylename{bf}
+\def\tt{\fam=\ttfam \setfontstyle{tt}}\def\ttstylename{tt}
+
+% Texinfo sort of supports the sans serif font style, which plain TeX does not.
+% So we set up a \sf.
+\newfam\sffam
+\def\sf{\fam=\sffam \setfontstyle{sf}}
+
+% We don't need math for this font style.
+\def\ttsl{\setfontstyle{ttsl}}
+
+
+% In order for the font changes to affect most math symbols and letters,
+% we have to define the \textfont of the standard families.
+% We don't bother to reset \scriptscriptfont; awaiting user need.
+%
+\def\resetmathfonts{%
+  \textfont0=\rmfont \textfont1=\ifont \textfont2=\syfont
+  \textfont\itfam=\itfont \textfont\slfam=\slfont \textfont\bffam=\bffont
+  \textfont\ttfam=\ttfont \textfont\sffam=\sffont
+  %
+  % Fonts for superscript.  Note that the 7pt fonts are used regardless
+  % of the current font size.
+  \scriptfont0=\sevenrm \scriptfont1=\seveni \scriptfont2=\sevensy
+  \scriptfont\itfam=\sevenit \scriptfont\slfam=\sevensl
+  \scriptfont\bffam=\sevenbf \scriptfont\ttfam=\seventt
+  \scriptfont\sffam=\sevensf
+}
+
+%
+
+% The font-changing commands (all called \...fonts) redefine the meanings
+% of \STYLEfont, instead of just \STYLE.  We do this because \STYLE needs
+% to also set the current \fam for math mode.  Our \STYLE (e.g., \rm)
+% commands hardwire \STYLEfont to set the current font.
+%
+% The fonts used for \ifont are for "math italics"  (\itfont is for italics
+% in regular text).  \syfont is also used in math mode only.
+%
+% Each font-changing command also sets the names \lsize (one size lower)
+% and \lllsize (three sizes lower).  These relative commands are used
+% in, e.g., the LaTeX logo and acronyms.
+%
+% This all needs generalizing, badly.
+%
+
+\def\assignfonts#1{%
+  \expandafter\let\expandafter\rmfont\csname #1rm\endcsname
+  \expandafter\let\expandafter\itfont\csname #1it\endcsname
+  \expandafter\let\expandafter\slfont\csname #1sl\endcsname
+  \expandafter\let\expandafter\bffont\csname #1bf\endcsname
+  \expandafter\let\expandafter\ttfont\csname #1tt\endcsname
+  \expandafter\let\expandafter\smallcaps\csname #1sc\endcsname
+  \expandafter\let\expandafter\sffont  \csname #1sf\endcsname
+  \expandafter\let\expandafter\ifont   \csname #1i\endcsname
+  \expandafter\let\expandafter\syfont  \csname #1sy\endcsname
+  \expandafter\let\expandafter\ttslfont\csname #1ttsl\endcsname
+}
+
+\newif\ifrmisbold
+
+% Select smaller font size with the current style.  Used to change font size
+% in, e.g., the LaTeX logo and acronyms.  If we are using bold fonts for
+% normal roman text, also use bold fonts for roman text in the smaller size.
+\def\switchtolllsize{%
+   \expandafter\assignfonts\expandafter{\lllsize}%
+   \ifrmisbold
+     \let\rmfont\bffont
+   \fi
+   \csname\curfontstyle\endcsname
+}%
+
+\def\switchtolsize{%
+   \expandafter\assignfonts\expandafter{\lsize}%
+   \ifrmisbold
+     \let\rmfont\bffont
+   \fi
+   \csname\curfontstyle\endcsname
+}%
+
+\def\definefontsetatsize#1#2#3#4#5{%
+\expandafter\def\csname #1fonts\endcsname{%
+  \def\curfontsize{#1}%
+  \def\lsize{#2}\def\lllsize{#3}%
+  \csname rmisbold#5\endcsname
+  \assignfonts{#1}%
+  \resetmathfonts
+  \setleading{#4}%
+}}
+
+\definefontsetatsize{text}   {reduced}{smaller}{\textleading}{false}
+\definefontsetatsize{title}  {chap}   {subsec} {27pt}  {true}
+\definefontsetatsize{chap}   {sec}    {text}   {19pt}  {true}
+\definefontsetatsize{sec}    {subsec} {reduced}{17pt}  {true}
+\definefontsetatsize{ssec}   {text}   {small}  {15pt}  {true}
+\definefontsetatsize{reduced}{small}  {smaller}{10.5pt}{false}
+\definefontsetatsize{small}  {smaller}{smaller}{10.5pt}{false}
+\definefontsetatsize{smaller}{smaller}{smaller}{9.5pt} {false}
+
+\def\titlefont#1{{\titlefonts\rm #1}}
+\let\subsecfonts = \ssecfonts
+\let\subsubsecfonts = \ssecfonts
+
+% Define these just so they can be easily changed for other fonts.
+\def\angleleft{$\langle$}
+\def\angleright{$\rangle$}
+
+% Set the fonts to use with the @small... environments.
+\let\smallexamplefonts = \smallfonts
+
+% About \smallexamplefonts.  If we use \smallfonts (9pt), @smallexample
+% can fit this many characters:
+%   8.5x11=86   smallbook=72  a4=90  a5=69
+% If we use \scriptfonts (8pt), then we can fit this many characters:
+%   8.5x11=90+  smallbook=80  a4=90+  a5=77
+% For me, subjectively, the few extra characters that fit aren't worth
+% the additional smallness of 8pt.  So I'm making the default 9pt.
+%
+% By the way, for comparison, here's what fits with @example (10pt):
+%   8.5x11=71  smallbook=60  a4=75  a5=58
+% --karl, 24jan03.
+
+% Set up the default fonts, so we can use them for creating boxes.
+%
+\definetextfontsizexi
+
+
+% Check if we are currently using a typewriter font.  Since all the
+% Computer Modern typewriter fonts have zero interword stretch (and
+% shrink), and it is reasonable to expect all typewriter fonts to have
+% this property, we can check that font parameter.
+%
+\def\ifmonospace{\ifdim\fontdimen3\font=0pt }
+
+{
+\catcode`\'=\active
+\catcode`\`=\active
+
+\gdef\setcodequotes{\let`\codequoteleft \let'\codequoteright}
+\gdef\setregularquotes{\let`\lq \let'\rq}
+}
+
+% Allow an option to not use regular directed right quote/apostrophe
+% (char 0x27), but instead the undirected quote from cmtt (char 0x0d).
+% The undirected quote is ugly, so don't make it the default, but it
+% works for pasting with more pdf viewers (at least evince), the
+% lilypond developers report.  xpdf does work with the regular 0x27.
+%
+\def\codequoteright{%
+  \ifmonospace
+    \expandafter\ifx\csname SETtxicodequoteundirected\endcsname\relax
+      \expandafter\ifx\csname SETcodequoteundirected\endcsname\relax
+        '%
+      \else \char'15 \fi
+    \else \char'15 \fi
+   \else
+     '%
+   \fi
+}
+%
+% and a similar option for the left quote char vs. a grave accent.
+% Modern fonts display ASCII 0x60 as a grave accent, so some people like
+% the code environments to do likewise.
+%
+\def\codequoteleft{%
+  \ifmonospace
+    \expandafter\ifx\csname SETtxicodequotebacktick\endcsname\relax
+      \expandafter\ifx\csname SETcodequotebacktick\endcsname\relax
+        % [Knuth] pp. 380,381,391
+        % \relax disables Spanish ligatures ?` and !` of \tt font.
+        \relax`%
+      \else \char'22 \fi
+    \else \char'22 \fi
+   \else
+     \relax`%
+   \fi
+}
+
+% Commands to set the quote options.
+%
+\parseargdef\codequoteundirected{%
+  \def\temp{#1}%
+  \ifx\temp\onword
+    \expandafter\let\csname SETtxicodequoteundirected\endcsname
+      = t%
+  \else\ifx\temp\offword
+    \expandafter\let\csname SETtxicodequoteundirected\endcsname
+      = \relax
+  \else
+    \errhelp = \EMsimple
+    \errmessage{Unknown @codequoteundirected value `\temp', must be on|off}%
+  \fi\fi
+}
+%
+\parseargdef\codequotebacktick{%
+  \def\temp{#1}%
+  \ifx\temp\onword
+    \expandafter\let\csname SETtxicodequotebacktick\endcsname
+      = t%
+  \else\ifx\temp\offword
+    \expandafter\let\csname SETtxicodequotebacktick\endcsname
+      = \relax
+  \else
+    \errhelp = \EMsimple
+    \errmessage{Unknown @codequotebacktick value `\temp', must be on|off}%
+  \fi\fi
+}
+
+% [Knuth] pp. 380,381,391, disable Spanish ligatures ?` and !` of \tt font.
+\def\noligaturesquoteleft{\relax\lq}
+
+% Count depth in font-changes, for error checks
+\newcount\fontdepth \fontdepth=0
+
+% Font commands.
+
+% #1 is the font command (\sl or \it), #2 is the text to slant.
+% If we are in a monospaced environment, however, 1) always use \ttsl,
+% and 2) do not add an italic correction.
+\def\dosmartslant#1#2{%
+  \ifusingtt
+    {{\ttsl #2}\let\next=\relax}%
+    {\def\next{{#1#2}\futurelet\next\smartitaliccorrection}}%
+  \next
+}
+\def\smartslanted{\dosmartslant\sl}
+\def\smartitalic{\dosmartslant\it}
+
+% Output an italic correction unless \next (presumed to be the following
+% character) is such as not to need one.
+\def\smartitaliccorrection{%
+  \ifx\next,%
+  \else\ifx\next-%
+  \else\ifx\next.%
+  \else\ifx\next\.%
+  \else\ifx\next\comma%
+  \else\ptexslash
+  \fi\fi\fi\fi\fi
+  \aftersmartic
+}
+
+% Unconditional use \ttsl, and no ic.  @var is set to this for defuns.
+\def\ttslanted#1{{\ttsl #1}}
+
+% @cite is like \smartslanted except unconditionally use \sl.  We never want
+% ttsl for book titles, do we?
+\def\cite#1{{\sl #1}\futurelet\next\smartitaliccorrection}
+
+\def\aftersmartic{}
+\def\var#1{%
+  \let\saveaftersmartic = \aftersmartic
+  \def\aftersmartic{\null\let\aftersmartic=\saveaftersmartic}%
+  \smartslanted{#1}%
+}
+
+\let\i=\smartitalic
+\let\slanted=\smartslanted
+\let\dfn=\smartslanted
+\let\emph=\smartitalic
+
+% Explicit font changes: @r, @sc, undocumented @ii.
+\def\r#1{{\rm #1}}              % roman font
+\def\sc#1{{\smallcaps#1}}       % smallcaps font
+\def\ii#1{{\it #1}}             % italic font
+
+% @b, explicit bold.  Also @strong.
+\def\b#1{{\bf #1}}
+\let\strong=\b
+
+% @sansserif, explicit sans.
+\def\sansserif#1{{\sf #1}}
+
+% We can't just use \exhyphenpenalty, because that only has effect at
+% the end of a paragraph.  Restore normal hyphenation at the end of the
+% group within which \nohyphenation is presumably called.
+%
+\def\nohyphenation{\hyphenchar\font = -1  \aftergroup\restorehyphenation}
+\def\restorehyphenation{\hyphenchar\font = `- }
+
+% Set sfcode to normal for the chars that usually have another value.
+% Can't use plain's \frenchspacing because it uses the `\x notation, and
+% sometimes \x has an active definition that messes things up.
+%
+\catcode`@=11
+  \def\plainfrenchspacing{%
+    \sfcode`\.=\@m \sfcode`\?=\@m \sfcode`\!=\@m
+    \sfcode`\:=\@m \sfcode`\;=\@m \sfcode`\,=\@m
+    \def\endofsentencespacefactor{1000}% for @. and friends
+  }
+  \def\plainnonfrenchspacing{%
+    \sfcode`\.3000\sfcode`\?3000\sfcode`\!3000
+    \sfcode`\:2000\sfcode`\;1500\sfcode`\,1250
+    \def\endofsentencespacefactor{3000}% for @. and friends
+  }
+\catcode`@=\other
+\def\endofsentencespacefactor{3000}% default
+
+% @t, explicit typewriter.
+\def\t#1{%
+  {\tt \plainfrenchspacing #1}%
+  \null
+}
+
+% @samp.
+\def\samp#1{{\setcodequotes\lq\tclose{#1}\rq\null}}
+
+% @indicateurl is \samp, that is, with quotes.
+\let\indicateurl=\samp
+
+% @code (and similar) prints in typewriter, but with spaces the same
+% size as normal in the surrounding text, without hyphenation, etc.
+% This is a subroutine for that.
+\def\tclose#1{%
+  {%
+    % Change normal interword space to be same as for the current font.
+    \spaceskip = \fontdimen2\font
+    %
+    % Switch to typewriter.
+    \tt
+    %
+    % But `\ ' produces the large typewriter interword space.
+    \def\ {{\spaceskip = 0pt{} }}%
+    %
+    % Turn off hyphenation.
+    \nohyphenation
+    %
+    \plainfrenchspacing
+    #1%
+  }%
+  \null % reset spacefactor to 1000
+}
+
+% We *must* turn on hyphenation at `-' and `_' in @code.
+% (But see \codedashfinish below.)
+% Otherwise, it is too hard to avoid overfull hboxes
+% in the Emacs manual, the Library manual, etc.
+%
+% Unfortunately, TeX uses one parameter (\hyphenchar) to control
+% both hyphenation at - and hyphenation within words.
+% We must therefore turn them both off (\tclose does that)
+% and arrange explicitly to hyphenate at a dash. -- rms.
+{
+  \catcode`\-=\active \catcode`\_=\active
+  \catcode`\'=\active \catcode`\`=\active
+  \global\let'=\rq \global\let`=\lq  % default definitions
+  %
+  \global\def\code{\begingroup
+    \setcodequotes
+    \catcode\dashChar=\active  \catcode\underChar=\active
+    \ifallowcodebreaks
+     \let-\codedash
+     \let_\codeunder
+    \else
+     \let-\normaldash
+     \let_\realunder
+    \fi
+    % Given -foo (with a single dash), we do not want to allow a break
+    % after the hyphen.
+    \global\let\codedashprev=\codedash
+    %
+    \codex
+  }
+  %
+  \gdef\codedash{\futurelet\next\codedashfinish}
+  \gdef\codedashfinish{%
+    \normaldash % always output the dash character itself.
+    %
+    % Now, output a discretionary to allow a line break, unless
+    % (a) the next character is a -, or
+    % (b) the preceding character is a -.
+    % E.g., given --posix, we do not want to allow a break after either -.
+    % Given --foo-bar, we do want to allow a break between the - and the b.
+    \ifx\next\codedash \else
+      \ifx\codedashprev\codedash
+      \else \discretionary{}{}{}\fi
+    \fi
+    % we need the space after the = for the case when \next itself is a
+    % space token; it would get swallowed otherwise.  As in @code{- a}.
+    \global\let\codedashprev= \next
+  }
+}
+\def\normaldash{-}
+%
+\def\codex #1{\tclose{#1}\endgroup}
+
+\def\codeunder{%
+  % this is all so @math{@code{var_name}+1} can work.  In math mode, _
+  % is "active" (mathcode"8000) and \normalunderscore (or \char95, etc.)
+  % will therefore expand the active definition of _, which is us
+  % (inside @code that is), therefore an endless loop.
+  \ifusingtt{\ifmmode
+               \mathchar"075F % class 0=ordinary, family 7=ttfam, pos 0x5F=_.
+             \else\normalunderscore \fi
+             \discretionary{}{}{}}%
+            {\_}%
+}
+
+% An additional complication: the above will allow breaks after, e.g.,
+% each of the four underscores in __typeof__.  This is bad.
+% @allowcodebreaks provides a document-level way to turn breaking at -
+% and _ on and off.
+%
+\newif\ifallowcodebreaks  \allowcodebreakstrue
+
+\def\keywordtrue{true}
+\def\keywordfalse{false}
+
+\parseargdef\allowcodebreaks{%
+  \def\txiarg{#1}%
+  \ifx\txiarg\keywordtrue
+    \allowcodebreakstrue
+  \else\ifx\txiarg\keywordfalse
+    \allowcodebreaksfalse
+  \else
+    \errhelp = \EMsimple
+    \errmessage{Unknown @allowcodebreaks option `\txiarg', must be true|false}%
+  \fi\fi
+}
+
+% For @command, @env, @file, @option quotes seem unnecessary,
+% so use \code rather than \samp.
+\let\command=\code
+\let\env=\code
+\let\file=\code
+\let\option=\code
+
+% @uref (abbreviation for `urlref') aka @url takes an optional
+% (comma-separated) second argument specifying the text to display and
+% an optional third arg as text to display instead of (rather than in
+% addition to) the url itself.  First (mandatory) arg is the url.
+
+% TeX-only option to allow changing PDF output to show only the second
+% arg (if given), and not the url (which is then just the link target).
+\newif\ifurefurlonlylink
+
+% The default \pretolerance setting stops the penalty inserted in
+% \urefallowbreak being a discouragement to line breaking.  Set it to
+% a negative value for this paragraph only.  Hopefully this does not
+% conflict with redefinitions of \par done elsewhere.
+\def\nopretolerance{%
+\pretolerance=-1
+\def\par{\endgraf\pretolerance=100 \let\par\endgraf}%
+}
+
+% The main macro is \urefbreak, which allows breaking at expected
+% places within the url.
+\def\urefbreak{\nopretolerance \begingroup \urefcatcodes \dourefbreak}
+\let\uref=\urefbreak
+%
+\def\dourefbreak#1{\urefbreakfinish #1,,,\finish}
+\def\urefbreakfinish#1,#2,#3,#4\finish{% doesn't work in @example
+  \unsepspaces
+  \pdfurl{#1}%
+  \setbox0 = \hbox{\ignorespaces #3}%
+  \ifdim\wd0 > 0pt
+    \unhbox0 % third arg given, show only that
+  \else
+    \setbox0 = \hbox{\ignorespaces #2}% look for second arg
+    \ifdim\wd0 > 0pt
+      \ifpdf
+        % For pdfTeX and LuaTeX
+        \ifurefurlonlylink
+          % PDF plus option to not display url, show just arg
+          \unhbox0
+        \else
+          % PDF, normally display both arg and url for consistency,
+          % visibility, if the pdf is eventually used to print, etc.
+          \unhbox0\ (\urefcode{#1})%
+        \fi
+      \else
+        \ifx\XeTeXrevision\thisisundefined
+          \unhbox0\ (\urefcode{#1})% DVI, always show arg and url
+        \else
+          % For XeTeX
+          \ifurefurlonlylink
+            % PDF plus option to not display url, show just arg
+            \unhbox0
+          \else
+            % PDF, normally display both arg and url for consistency,
+            % visibility, if the pdf is eventually used to print, etc.
+            \unhbox0\ (\urefcode{#1})%
+          \fi
+        \fi
+      \fi
+    \else
+      \urefcode{#1}% only url given, so show it
+    \fi
+  \fi
+  \endlink
+\endgroup}
+
+% Allow line breaks around only a few characters (only).
+\def\urefcatcodes{%
+  \catcode`\&=\active \catcode`\.=\active
+  \catcode`\#=\active \catcode`\?=\active
+  \catcode`\/=\active
+}
+{
+  \urefcatcodes
+  %
+  \global\def\urefcode{\begingroup
+    \setcodequotes
+    \urefcatcodes
+    \let&\urefcodeamp
+    \let.\urefcodedot
+    \let#\urefcodehash
+    \let?\urefcodequest
+    \let/\urefcodeslash
+    \codex
+  }
+  %
+  % By default, they are just regular characters.
+  \global\def&{\normalamp}
+  \global\def.{\normaldot}
+  \global\def#{\normalhash}
+  \global\def?{\normalquest}
+  \global\def/{\normalslash}
+}
+
+\def\urefcodeamp{\urefprebreak \&\urefpostbreak}
+\def\urefcodedot{\urefprebreak .\urefpostbreak}
+\def\urefcodehash{\urefprebreak \#\urefpostbreak}
+\def\urefcodequest{\urefprebreak ?\urefpostbreak}
+\def\urefcodeslash{\futurelet\next\urefcodeslashfinish}
+{
+  \catcode`\/=\active
+  \global\def\urefcodeslashfinish{%
+    \urefprebreak \slashChar
+    % Allow line break only after the final / in a sequence of
+    % slashes, to avoid line break between the slashes in http://.
+    \ifx\next/\else \urefpostbreak \fi
+  }
+}
+
+% By default we'll break after the special characters, but some people like to
+% break before the special chars, so allow that.  Also allow no breaking at
+% all, for manual control.
+%
+\parseargdef\urefbreakstyle{%
+  \def\txiarg{#1}%
+  \ifx\txiarg\wordnone
+    \def\urefprebreak{\nobreak}\def\urefpostbreak{\nobreak}
+  \else\ifx\txiarg\wordbefore
+    \def\urefprebreak{\urefallowbreak}\def\urefpostbreak{\nobreak}
+  \else\ifx\txiarg\wordafter
+    \def\urefprebreak{\nobreak}\def\urefpostbreak{\urefallowbreak}
+  \else
+    \errhelp = \EMsimple
+    \errmessage{Unknown @urefbreakstyle setting `\txiarg'}%
+  \fi\fi\fi
+}
+\def\wordafter{after}
+\def\wordbefore{before}
+\def\wordnone{none}
+
+% Allow a ragged right output to aid breaking long URL's.  There can
+% be a break at the \allowbreak with no extra glue (if the existing stretch in
+% the line is sufficient), a break at the \penalty with extra glue added
+% at the end of the line, or no break at all here.
+%   Changing the value of the penalty and/or the amount of stretch affects how
+% preferable one choice is over the other.
+\def\urefallowbreak{%
+  \penalty0\relax
+  \hskip 0pt plus 2 em\relax
+  \penalty1000\relax
+  \hskip 0pt plus -2 em\relax
+}
+
+\urefbreakstyle after
+
+% @url synonym for @uref, since that's how everyone uses it.
+%
+\let\url=\uref
+
+% rms does not like angle brackets --karl, 17may97.
+% So now @email is just like @uref, unless we are pdf.
+%
+%\def\email#1{\angleleft{\tt #1}\angleright}
+\ifpdforxetex
+  \def\email#1{\doemail#1,,\finish}
+  \def\doemail#1,#2,#3\finish{\begingroup
+    \unsepspaces
+    \pdfurl{mailto:#1}%
+    \setbox0 = \hbox{\ignorespaces #2}%
+    \ifdim\wd0>0pt\unhbox0\else\code{#1}\fi
+    \endlink
+  \endgroup}
+\else
+  \let\email=\uref
+\fi
+
+% @kbdinputstyle -- arg is `distinct' (@kbd uses slanted tty font always),
+%   `example' (@kbd uses ttsl only inside of @example and friends),
+%   or `code' (@kbd uses normal tty font always).
+\parseargdef\kbdinputstyle{%
+  \def\txiarg{#1}%
+  \ifx\txiarg\worddistinct
+    \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}%
+  \else\ifx\txiarg\wordexample
+    \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\tt}%
+  \else\ifx\txiarg\wordcode
+    \gdef\kbdexamplefont{\tt}\gdef\kbdfont{\tt}%
+  \else
+    \errhelp = \EMsimple
+    \errmessage{Unknown @kbdinputstyle setting `\txiarg'}%
+  \fi\fi\fi
+}
+\def\worddistinct{distinct}
+\def\wordexample{example}
+\def\wordcode{code}
+
+% Default is `distinct'.
+\kbdinputstyle distinct
+
+% @kbd is like @code, except that if the argument is just one @key command,
+% then @kbd has no effect.
+\def\kbd#1{{\def\look{#1}\expandafter\kbdsub\look??\par}}
+
+\def\xkey{\key}
+\def\kbdsub#1#2#3\par{%
+  \def\one{#1}\def\three{#3}\def\threex{??}%
+  \ifx\one\xkey\ifx\threex\three \key{#2}%
+  \else{\tclose{\kbdfont\setcodequotes\look}}\fi
+  \else{\tclose{\kbdfont\setcodequotes\look}}\fi
+}
+
+% definition of @key that produces a lozenge.  Doesn't adjust to text size.
+%\setfont\keyrm\rmshape{8}{1000}{OT1}
+%\font\keysy=cmsy9
+%\def\key#1{{\keyrm\textfont2=\keysy \leavevmode\hbox{%
+%  \raise0.4pt\hbox{\angleleft}\kern-.08em\vtop{%
+%    \vbox{\hrule\kern-0.4pt
+%     \hbox{\raise0.4pt\hbox{\vphantom{\angleleft}}#1}}%
+%    \kern-0.4pt\hrule}%
+%  \kern-.06em\raise0.4pt\hbox{\angleright}}}}
+
+% definition of @key with no lozenge.  If the current font is already
+% monospace, don't change it; that way, we respect @kbdinputstyle.  But
+% if it isn't monospace, then use \tt.
+%
+\def\key#1{{\setregularquotes
+  \nohyphenation
+  \ifmonospace\else\tt\fi
+  #1}\null}
+
+% @clicksequence{File @click{} Open ...}
+\def\clicksequence#1{\begingroup #1\endgroup}
+
+% @clickstyle @arrow   (by default)
+\parseargdef\clickstyle{\def\click{#1}}
+\def\click{\arrow}
+
+% Typeset a dimension, e.g., `in' or `pt'.  The only reason for the
+% argument is to make the input look right: @dmn{pt} instead of @dmn{}pt.
+%
+\def\dmn#1{\thinspace #1}
+
+% @acronym for "FBI", "NATO", and the like.
+% We print this one point size smaller, since it's intended for
+% all-uppercase.
+%
+\def\acronym#1{\doacronym #1,,\finish}
+\def\doacronym#1,#2,#3\finish{%
+  {\switchtolsize #1}%
+  \def\temp{#2}%
+  \ifx\temp\empty \else
+    \space ({\unsepspaces \ignorespaces \temp \unskip})%
+  \fi
+  \null % reset \spacefactor=1000
+}
+
+% @abbr for "Comput. J." and the like.
+% No font change, but don't do end-of-sentence spacing.
+%
+\def\abbr#1{\doabbr #1,,\finish}
+\def\doabbr#1,#2,#3\finish{%
+  {\plainfrenchspacing #1}%
+  \def\temp{#2}%
+  \ifx\temp\empty \else
+    \space ({\unsepspaces \ignorespaces \temp \unskip})%
+  \fi
+  \null % reset \spacefactor=1000
+}
+
+% @asis just yields its argument.  Used with @table, for example.
+%
+\def\asis#1{#1}
+
+% @math outputs its argument in math mode.
+%
+% One complication: _ usually means subscripts, but it could also mean
+% an actual _ character, as in @math{@var{some_variable} + 1}.  So make
+% _ active, and distinguish by seeing if the current family is \slfam,
+% which is what @var uses.
+{
+  \catcode`\_ = \active
+  \gdef\mathunderscore{%
+    \catcode`\_=\active
+    \def_{\ifnum\fam=\slfam \_\else\sb\fi}%
+  }
+}
+% Another complication: we want \\ (and @\) to output a math (or tt) \.
+% FYI, plain.tex uses \\ as a temporary control sequence (for no
+% particular reason), but this is not advertised and we don't care.
+%
+% The \mathchar is class=0=ordinary, family=7=ttfam, position=5C=\.
+\def\mathbackslash{\ifnum\fam=\ttfam \mathchar"075C \else\backslash \fi}
+%
+\def\math{%
+  \ifmmode\else % only go into math if not in math mode already
+    \tex
+    \mathunderscore
+    \let\\ = \mathbackslash
+    \mathactive
+    % make the texinfo accent commands work in math mode
+    \let\"=\ddot
+    \let\'=\acute
+    \let\==\bar
+    \let\^=\hat
+    \let\`=\grave
+    \let\u=\breve
+    \let\v=\check
+    \let\~=\tilde
+    \let\dotaccent=\dot
+    % have to provide another name for sup operator
+    \let\mathopsup=\sup
+  $\expandafter\finishmath\fi
+}
+\def\finishmath#1{#1$\endgroup}  % Close the group opened by \tex.
+
+% Some active characters (such as <) are spaced differently in math.
+% We have to reset their definitions in case the @math was an argument
+% to a command which sets the catcodes (such as @item or @section).
+%
+{
+  \catcode`^ = \active
+  \catcode`< = \active
+  \catcode`> = \active
+  \catcode`+ = \active
+  \catcode`' = \active
+  \gdef\mathactive{%
+    \let^ = \ptexhat
+    \let< = \ptexless
+    \let> = \ptexgtr
+    \let+ = \ptexplus
+    \let' = \ptexquoteright
+  }
+}
+
+% for @sub and @sup, if in math mode, just do a normal sub/superscript.
+% If in text, use math to place as sub/superscript, but switch
+% into text mode, with smaller fonts.  This is a different font than the
+% one used for real math sub/superscripts (8pt vs. 7pt), but let's not
+% fix it (significant additions to font machinery) until someone notices.
+%
+\def\sub{\ifmmode \expandafter\sb \else \expandafter\finishsub\fi}
+\def\finishsub#1{$\sb{\hbox{\switchtolllsize #1}}$}%
+%
+\def\sup{\ifmmode \expandafter\ptexsp \else \expandafter\finishsup\fi}
+\def\finishsup#1{$\ptexsp{\hbox{\switchtolllsize #1}}$}%
+
+% provide this command from LaTeX as it is very common
+\def\frac#1#2{{{#1}\over{#2}}}
+
+% @displaymath.
+% \globaldefs is needed to recognize the end lines in \tex and
+% \end tex.  Set \thisenv as @end displaymath is seen before @end tex.
+{\obeylines
+\globaldefs=1
+\envdef\displaymath{%
+\tex%
+\def\thisenv{\displaymath}%
+\begingroup\let\end\displaymathend%
+$$%
+}
+
+\def\displaymathend{$$\endgroup\end}%
+
+\def\Edisplaymath{%
+\def\thisenv{\tex}%
+\end tex
+}}
+
+
+% @inlinefmt{FMTNAME,PROCESSED-TEXT} and @inlineraw{FMTNAME,RAW-TEXT}.
+% Ignore unless FMTNAME == tex; then it is like @iftex and @tex,
+% except specified as a normal braced arg, so no newlines to worry about.
+%
+\def\outfmtnametex{tex}
+%
+\long\def\inlinefmt#1{\doinlinefmt #1,\finish}
+\long\def\doinlinefmt#1,#2,\finish{%
+  \def\inlinefmtname{#1}%
+  \ifx\inlinefmtname\outfmtnametex \ignorespaces #2\fi
+}
+%
+% @inlinefmtifelse{FMTNAME,THEN-TEXT,ELSE-TEXT} expands THEN-TEXT if
+% FMTNAME is tex, else ELSE-TEXT.
+\long\def\inlinefmtifelse#1{\doinlinefmtifelse #1,,,\finish}
+\long\def\doinlinefmtifelse#1,#2,#3,#4,\finish{%
+  \def\inlinefmtname{#1}%
+  \ifx\inlinefmtname\outfmtnametex \ignorespaces #2\else \ignorespaces #3\fi
+}
+%
+% For raw, must switch into @tex before parsing the argument, to avoid
+% setting catcodes prematurely.  Doing it this way means that, for
+% example, @inlineraw{html, foo{bar} gets a parse error instead of being
+% ignored.  But this isn't important because if people want a literal
+% *right* brace they would have to use a command anyway, so they may as
+% well use a command to get a left brace too.  We could re-use the
+% delimiter character idea from \verb, but it seems like overkill.
+%
+\long\def\inlineraw{\tex \doinlineraw}
+\long\def\doinlineraw#1{\doinlinerawtwo #1,\finish}
+\def\doinlinerawtwo#1,#2,\finish{%
+  \def\inlinerawname{#1}%
+  \ifx\inlinerawname\outfmtnametex \ignorespaces #2\fi
+  \endgroup % close group opened by \tex.
+}
+
+% @inlineifset{VAR, TEXT} expands TEXT if VAR is @set.
+%
+\long\def\inlineifset#1{\doinlineifset #1,\finish}
+\long\def\doinlineifset#1,#2,\finish{%
+  \def\inlinevarname{#1}%
+  \expandafter\ifx\csname SET\inlinevarname\endcsname\relax
+  \else\ignorespaces#2\fi
+}
+
+% @inlineifclear{VAR, TEXT} expands TEXT if VAR is not @set.
+%
+\long\def\inlineifclear#1{\doinlineifclear #1,\finish}
+\long\def\doinlineifclear#1,#2,\finish{%
+  \def\inlinevarname{#1}%
+  \expandafter\ifx\csname SET\inlinevarname\endcsname\relax \ignorespaces#2\fi
+}
+
+
+\message{glyphs,}
+% and logos.
+
+% @@ prints an @, as does @atchar{}.
+\def\@{\char64 }
+\let\atchar=\@
+
+% @{ @} @lbracechar{} @rbracechar{} all generate brace characters.
+\def\lbracechar{{\ifmonospace\char123\else\ensuremath\lbrace\fi}}
+\def\rbracechar{{\ifmonospace\char125\else\ensuremath\rbrace\fi}}
+\let\{=\lbracechar
+\let\}=\rbracechar
+
+% @comma{} to avoid , parsing problems.
+\let\comma = ,
+
+% Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent
+% Others are defined by plain TeX: @` @' @" @^ @~ @= @u @v @H.
+\let\, = \ptexc
+\let\dotaccent = \ptexdot
+\def\ringaccent#1{{\accent23 #1}}
+\let\tieaccent = \ptext
+\let\ubaraccent = \ptexb
+\let\udotaccent = \d
+
+% Other special characters: @questiondown @exclamdown @ordf @ordm
+% Plain TeX defines: @AA @AE @O @OE @L (plus lowercase versions) @ss.
+\def\questiondown{?`}
+\def\exclamdown{!`}
+\def\ordf{\leavevmode\raise1ex\hbox{\switchtolllsize \underbar{a}}}
+\def\ordm{\leavevmode\raise1ex\hbox{\switchtolllsize \underbar{o}}}
+
+% Dotless i and dotless j, used for accents.
+\def\imacro{i}
+\def\jmacro{j}
+\def\dotless#1{%
+  \def\temp{#1}%
+  \ifx\temp\imacro \ifmmode\imath \else\ptexi \fi
+  \else\ifx\temp\jmacro \ifmmode\jmath \else\j \fi
+  \else \errmessage{@dotless can be used only with i or j}%
+  \fi\fi
+}
+
+% The \TeX{} logo, as in plain, but resetting the spacing so that a
+% period following counts as ending a sentence.  (Idea found in latex.)
+%
+\edef\TeX{\TeX \spacefactor=1000 }
+
+% @LaTeX{} logo.  Not quite the same results as the definition in
+% latex.ltx, since we use a different font for the raised A; it's most
+% convenient for us to use an explicitly smaller font, rather than using
+% the \scriptstyle font (since we don't reset \scriptstyle and
+% \scriptscriptstyle).
+%
+\def\LaTeX{%
+  L\kern-.36em
+  {\setbox0=\hbox{T}%
+   \vbox to \ht0{\hbox{%
+     \ifx\textnominalsize\xwordpt
+       % for 10pt running text, lllsize (8pt) is too small for the A in LaTeX.
+       % Revert to plain's \scriptsize, which is 7pt.
+       \count255=\the\fam $\fam\count255 \scriptstyle A$%
+     \else
+       % For 11pt, we can use our lllsize.
+       \switchtolllsize A%
+     \fi
+     }%
+     \vss
+  }}%
+  \kern-.15em
+  \TeX
+}
+
+% Some math mode symbols.  Define \ensuremath to switch into math mode
+% unless we are already there.  Expansion tricks may not be needed here,
+% but safer, and can't hurt.
+\def\ensuremath{\ifmmode \expandafter\asis \else\expandafter\ensuredmath \fi}
+\def\ensuredmath#1{$\relax#1$}
+%
+\def\bullet{\ensuremath\ptexbullet}
+\def\geq{\ensuremath\ge}
+\def\leq{\ensuremath\le}
+\def\minus{\ensuremath-}
+
+% @dots{} outputs an ellipsis using the current font.
+% We do .5em per period so that it has the same spacing in the cm
+% typewriter fonts as three actual period characters; on the other hand,
+% in other typewriter fonts three periods are wider than 1.5em.  So do
+% whichever is larger.
+%
+\def\dots{%
+  \leavevmode
+  \setbox0=\hbox{...}% get width of three periods
+  \ifdim\wd0 > 1.5em
+    \dimen0 = \wd0
+  \else
+    \dimen0 = 1.5em
+  \fi
+  \hbox to \dimen0{%
+    \hskip 0pt plus.25fil
+    .\hskip 0pt plus1fil
+    .\hskip 0pt plus1fil
+    .\hskip 0pt plus.5fil
+  }%
+}
+
+% @enddots{} is an end-of-sentence ellipsis.
+%
+\def\enddots{%
+  \dots
+  \spacefactor=\endofsentencespacefactor
+}
+
+% @point{}, @result{}, @expansion{}, @print{}, @equiv{}.
+%
+% Since these characters are used in examples, they should be an even number of
+% \tt widths. Each \tt character is 1en, so two makes it 1em.
+%
+\def\point{$\star$}
+\def\arrow{\leavevmode\raise.05ex\hbox to 1em{\hfil$\rightarrow$\hfil}}
+\def\result{\leavevmode\raise.05ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
+\def\expansion{\leavevmode\hbox to 1em{\hfil$\mapsto$\hfil}}
+\def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
+\def\equiv{\leavevmode\hbox to 1em{\hfil$\ptexequiv$\hfil}}
+
+% The @error{} command.
+% Adapted from the TeXbook's \boxit.
+%
+\newbox\errorbox
+%
+{\ttfont \global\dimen0 = 3em}% Width of the box.
+\dimen2 = .55pt % Thickness of rules
+% The text. (`r' is open on the right, `e' somewhat less so on the left.)
+\setbox0 = \hbox{\kern-.75pt \reducedsf \putworderror\kern-1.5pt}
+%
+\setbox\errorbox=\hbox to \dimen0{\hfil
+   \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
+   \advance\hsize by -2\dimen2 % Rules.
+   \vbox{%
+      \hrule height\dimen2
+      \hbox{\vrule width\dimen2 \kern3pt          % Space to left of text.
+         \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
+         \kern3pt\vrule width\dimen2}% Space to right.
+      \hrule height\dimen2}
+    \hfil}
+%
+\def\error{\leavevmode\lower.7ex\copy\errorbox}
+
+% @pounds{} is a sterling sign, which Knuth put in the CM italic font.
+%
+\def\pounds{\ifmonospace{\ecfont\char"BF}\else{\it\$}\fi}
+
+% @euro{} comes from a separate font, depending on the current style.
+% We use the free feym* fonts from the eurosym package by Henrik
+% Theiling, which support regular, slanted, bold and bold slanted (and
+% "outlined" (blackboard board, sort of) versions, which we don't need).
+% It is available from http://www.ctan.org/tex-archive/fonts/eurosym.
+%
+% Although only regular is the truly official Euro symbol, we ignore
+% that.  The Euro is designed to be slightly taller than the regular
+% font height.
+%
+% feymr - regular
+% feymo - slanted
+% feybr - bold
+% feybo - bold slanted
+%
+% There is no good (free) typewriter version, to my knowledge.
+% A feymr10 euro is ~7.3pt wide, while a normal cmtt10 char is ~5.25pt wide.
+% Hmm.
+%
+% Also doesn't work in math.  Do we need to do math with euro symbols?
+% Hope not.
+%
+%
+\def\euro{{\eurofont e}}
+\def\eurofont{%
+  % We set the font at each command, rather than predefining it in
+  % \textfonts and the other font-switching commands, so that
+  % installations which never need the symbol don't have to have the
+  % font installed.
+  %
+  % There is only one designed size (nominal 10pt), so we always scale
+  % that to the current nominal size.
+  %
+  % By the way, simply using "at 1em" works for cmr10 and the like, but
+  % does not work for cmbx10 and other extended/shrunken fonts.
+  %
+  \def\eurosize{\csname\curfontsize nominalsize\endcsname}%
+  %
+  \ifx\curfontstyle\bfstylename
+    % bold:
+    \font\thiseurofont = \ifusingit{feybo10}{feybr10} at \eurosize
+  \else
+    % regular:
+    \font\thiseurofont = \ifusingit{feymo10}{feymr10} at \eurosize
+  \fi
+  \thiseurofont
+}
+
+% Glyphs from the EC fonts.  We don't use \let for the aliases, because
+% sometimes we redefine the original macro, and the alias should reflect
+% the redefinition.
+%
+% Use LaTeX names for the Icelandic letters.
+\def\DH{{\ecfont \char"D0}} % Eth
+\def\dh{{\ecfont \char"F0}} % eth
+\def\TH{{\ecfont \char"DE}} % Thorn
+\def\th{{\ecfont \char"FE}} % thorn
+%
+\def\guillemetleft{{\ecfont \char"13}}
+\def\guillemotleft{\guillemetleft}
+\def\guillemetright{{\ecfont \char"14}}
+\def\guillemotright{\guillemetright}
+\def\guilsinglleft{{\ecfont \char"0E}}
+\def\guilsinglright{{\ecfont \char"0F}}
+\def\quotedblbase{{\ecfont \char"12}}
+\def\quotesinglbase{{\ecfont \char"0D}}
+%
+% This positioning is not perfect (see the ogonek LaTeX package), but
+% we have the precomposed glyphs for the most common cases.  We put the
+% tests to use those glyphs in the single \ogonek macro so we have fewer
+% dummy definitions to worry about for index entries, etc.
+%
+% ogonek is also used with other letters in Lithuanian (IOU), but using
+% the precomposed glyphs for those is not so easy since they aren't in
+% the same EC font.
+\def\ogonek#1{{%
+  \def\temp{#1}%
+  \ifx\temp\macrocharA\Aogonek
+  \else\ifx\temp\macrochara\aogonek
+  \else\ifx\temp\macrocharE\Eogonek
+  \else\ifx\temp\macrochare\eogonek
+  \else
+    \ecfont \setbox0=\hbox{#1}%
+    \ifdim\ht0=1ex\accent"0C #1%
+    \else\ooalign{\unhbox0\crcr\hidewidth\char"0C \hidewidth}%
+    \fi
+  \fi\fi\fi\fi
+  }%
+}
+\def\Aogonek{{\ecfont \char"81}}\def\macrocharA{A}
+\def\aogonek{{\ecfont \char"A1}}\def\macrochara{a}
+\def\Eogonek{{\ecfont \char"86}}\def\macrocharE{E}
+\def\eogonek{{\ecfont \char"A6}}\def\macrochare{e}
+%
+% Use the European Computer Modern fonts (cm-super in outline format)
+% for non-CM glyphs.  That is ec* for regular text and tc* for the text
+% companion symbols (LaTeX TS1 encoding).  Both are part of the ec
+% package and follow the same conventions.
+%
+\def\ecfont{\etcfont{e}}
+\def\tcfont{\etcfont{t}}
+%
+\def\etcfont#1{%
+  % We can't distinguish serif/sans and italic/slanted, but this
+  % is used for crude hacks anyway (like adding French and German
+  % quotes to documents typeset with CM, where we lose kerning), so
+  % hopefully nobody will notice/care.
+  \edef\ecsize{\csname\curfontsize ecsize\endcsname}%
+  \edef\nominalsize{\csname\curfontsize nominalsize\endcsname}%
+  \ifmonospace
+    % typewriter:
+    \font\thisecfont = #1ctt\ecsize \space at \nominalsize
+  \else
+    \ifx\curfontstyle\bfstylename
+      % bold:
+      \font\thisecfont = #1cb\ifusingit{i}{x}\ecsize \space at \nominalsize
+    \else
+      % regular:
+      \font\thisecfont = #1c\ifusingit{ti}{rm}\ecsize \space at \nominalsize
+    \fi
+  \fi
+  \thisecfont
+}
+
+% @registeredsymbol - R in a circle.  The font for the R should really
+% be smaller yet, but lllsize is the best we can do for now.
+% Adapted from the plain.tex definition of \copyright.
+%
+\def\registeredsymbol{%
+  $^{{\ooalign{\hfil\raise.07ex\hbox{\switchtolllsize R}%
+               \hfil\crcr\Orb}}%
+    }$%
+}
+
+% @textdegree - the normal degrees sign.
+%
+\def\textdegree{$^\circ$}
+
+% Laurent Siebenmann reports \Orb undefined with:
+%  Textures 1.7.7 (preloaded format=plain 93.10.14)  (68K)  16 APR 2004 02:38
+% so we'll define it if necessary.
+%
+\ifx\Orb\thisisundefined
+\def\Orb{\mathhexbox20D}
+\fi
+
+% Quotes.
+\chardef\quoteleft=`\`
+\chardef\quoteright=`\'
+
+% only change font for tt for correct kerning and to avoid using
+% \ecfont unless necessary.
+\def\quotedblleft{%
+  \ifmonospace{\ecfont\char"10}\else{\char"5C}\fi
+}
+
+\def\quotedblright{%
+  \ifmonospace{\ecfont\char"11}\else{\char`\"}\fi
+}
+
+
+\message{page headings,}
+
+\newskip\titlepagetopglue \titlepagetopglue = 1.5in
+\newskip\titlepagebottomglue \titlepagebottomglue = 2pc
+
+% First the title page.  Must do @settitle before @titlepage.
+\newif\ifseenauthor
+\newif\iffinishedtitlepage
+
+% @setcontentsaftertitlepage used to do an implicit @contents or
+% @shortcontents after @end titlepage, but it is now obsolete.
+\def\setcontentsaftertitlepage{%
+  \errmessage{@setcontentsaftertitlepage has been removed as a Texinfo
+              command; move your @contents command if you want the contents
+              after the title page.}}%
+\def\setshortcontentsaftertitlepage{%
+  \errmessage{@setshortcontentsaftertitlepage has been removed as a Texinfo
+              command; move your @shortcontents and @contents commands if you
+              want the contents after the title page.}}%
+
+\parseargdef\shorttitlepage{%
+  \begingroup \hbox{}\vskip 1.5in \chaprm \centerline{#1}%
+  \endgroup\page\hbox{}\page}
+
+\envdef\titlepage{%
+  % Open one extra group, as we want to close it in the middle of \Etitlepage.
+  \begingroup
+    \parindent=0pt \textfonts
+    % Leave some space at the very top of the page.
+    \vglue\titlepagetopglue
+    % No rule at page bottom unless we print one at the top with @title.
+    \finishedtitlepagetrue
+    %
+    % Most title ``pages'' are actually two pages long, with space
+    % at the top of the second.  We don't want the ragged left on the second.
+    \let\oldpage = \page
+    \def\page{%
+      \iffinishedtitlepage\else
+	 \finishtitlepage
+      \fi
+      \let\page = \oldpage
+      \page
+      \null
+    }%
+}
+
+\def\Etitlepage{%
+    \iffinishedtitlepage\else
+	\finishtitlepage
+    \fi
+    % It is important to do the page break before ending the group,
+    % because the headline and footline are only empty inside the group.
+    % If we use the new definition of \page, we always get a blank page
+    % after the title page, which we certainly don't want.
+    \oldpage
+  \endgroup
+  %
+  % Need this before the \...aftertitlepage checks so that if they are
+  % in effect the toc pages will come out with page numbers.
+  \HEADINGSon
+}
+
+\def\finishtitlepage{%
+  \vskip4pt \hrule height 2pt width \hsize
+  \vskip\titlepagebottomglue
+  \finishedtitlepagetrue
+}
+
+% Settings used for typesetting titles: no hyphenation, no indentation,
+% don't worry much about spacing, ragged right.  This should be used
+% inside a \vbox, and fonts need to be set appropriately first. \par should
+% be specified before the end of the \vbox, since a vbox is a group.
+%
+\def\raggedtitlesettings{%
+  \rm
+  \hyphenpenalty=10000
+  \parindent=0pt
+  \tolerance=5000
+  \ptexraggedright
+}
+
+% Macros to be used within @titlepage:
+
+\let\subtitlerm=\rmfont
+\def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}
+
+\parseargdef\title{%
+  \checkenv\titlepage
+  \vbox{\titlefonts \raggedtitlesettings #1\par}%
+  % print a rule at the page bottom also.
+  \finishedtitlepagefalse
+  \vskip4pt \hrule height 4pt width \hsize \vskip4pt
+}
+
+\parseargdef\subtitle{%
+  \checkenv\titlepage
+  {\subtitlefont \rightline{#1}}%
+}
+
+% @author should come last, but may come many times.
+% It can also be used inside @quotation.
+%
+\parseargdef\author{%
+  \def\temp{\quotation}%
+  \ifx\thisenv\temp
+    \def\quotationauthor{#1}% printed in \Equotation.
+  \else
+    \checkenv\titlepage
+    \ifseenauthor\else \vskip 0pt plus 1filll \seenauthortrue \fi
+    {\secfonts\rm \leftline{#1}}%
+  \fi
+}
+
+
+% Set up page headings and footings.
+
+\let\thispage=\folio
+
+\newtoks\evenheadline    % headline on even pages
+\newtoks\oddheadline     % headline on odd pages
+\newtoks\evenchapheadline% headline on even pages with a new chapter
+\newtoks\oddchapheadline % headline on odd pages with a new chapter
+\newtoks\evenfootline    % footline on even pages
+\newtoks\oddfootline     % footline on odd pages
+
+% Now make \makeheadline and \makefootline in Plain TeX use those variables
+\headline={{\textfonts\rm
+            \ifchapterpage
+              \ifodd\pageno\the\oddchapheadline\else\the\evenchapheadline\fi
+            \else
+              \ifodd\pageno\the\oddheadline\else\the\evenheadline\fi
+            \fi}}
+
+\footline={{\textfonts\rm \ifodd\pageno \the\oddfootline
+                            \else \the\evenfootline \fi}\HEADINGShook}
+\let\HEADINGShook=\relax
+
+% Commands to set those variables.
+% For example, this is what  @headings on  does
+% @evenheading @thistitle|@thispage|@thischapter
+% @oddheading @thischapter|@thispage|@thistitle
+% @evenfooting @thisfile||
+% @oddfooting ||@thisfile
+
+
+\def\evenheading{\parsearg\evenheadingxxx}
+\def\evenheadingxxx #1{\evenheadingyyy #1\|\|\|\|\finish}
+\def\evenheadingyyy #1\|#2\|#3\|#4\finish{%
+  \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
+  \global\evenchapheadline=\evenheadline}
+
+\def\oddheading{\parsearg\oddheadingxxx}
+\def\oddheadingxxx #1{\oddheadingyyy #1\|\|\|\|\finish}
+\def\oddheadingyyy #1\|#2\|#3\|#4\finish{%
+  \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}%
+  \global\oddchapheadline=\oddheadline}
+
+\parseargdef\everyheading{\oddheadingxxx{#1}\evenheadingxxx{#1}}%
+
+\def\evenfooting{\parsearg\evenfootingxxx}
+\def\evenfootingxxx #1{\evenfootingyyy #1\|\|\|\|\finish}
+\def\evenfootingyyy #1\|#2\|#3\|#4\finish{%
+\global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
+
+\def\oddfooting{\parsearg\oddfootingxxx}
+\def\oddfootingxxx #1{\oddfootingyyy #1\|\|\|\|\finish}
+\def\oddfootingyyy #1\|#2\|#3\|#4\finish{%
+  \global\oddfootline = {\rlap{\centerline{#2}}\line{#1\hfil#3}}%
+  %
+  % Leave some space for the footline.  Hopefully ok to assume
+  % @evenfooting will not be used by itself.
+  \global\advance\txipageheight by -12pt
+  \global\advance\vsize by -12pt
+}
+
+\parseargdef\everyfooting{\oddfootingxxx{#1}\evenfootingxxx{#1}}
+
+% @evenheadingmarks top     \thischapter <- chapter at the top of a page
+% @evenheadingmarks bottom  \thischapter <- chapter at the bottom of a page
+%
+% The same set of arguments for:
+%
+% @oddheadingmarks
+% @evenfootingmarks
+% @oddfootingmarks
+% @everyheadingmarks
+% @everyfootingmarks
+
+% These define \getoddheadingmarks, \getevenheadingmarks,
+% \getoddfootingmarks, and \getevenfootingmarks, each to one of
+% \gettopheadingmarks, \getbottomheadingmarks.
+%
+\def\evenheadingmarks{\headingmarks{even}{heading}}
+\def\oddheadingmarks{\headingmarks{odd}{heading}}
+\def\evenfootingmarks{\headingmarks{even}{footing}}
+\def\oddfootingmarks{\headingmarks{odd}{footing}}
+\parseargdef\everyheadingmarks{\headingmarks{even}{heading}{#1}
+                          \headingmarks{odd}{heading}{#1} }
+\parseargdef\everyfootingmarks{\headingmarks{even}{footing}{#1}
+                          \headingmarks{odd}{footing}{#1} }
+% #1 = even/odd, #2 = heading/footing, #3 = top/bottom.
+\def\headingmarks#1#2#3 {%
+  \expandafter\let\expandafter\temp \csname get#3headingmarks\endcsname
+  \global\expandafter\let\csname get#1#2marks\endcsname \temp
+}
+
+\everyheadingmarks bottom
+\everyfootingmarks bottom
+
+% @headings double      turns headings on for double-sided printing.
+% @headings single      turns headings on for single-sided printing.
+% @headings off         turns them off.
+% @headings on          same as @headings double, retained for compatibility.
+% @headings after       turns on double-sided headings after this page.
+% @headings doubleafter turns on double-sided headings after this page.
+% @headings singleafter turns on single-sided headings after this page.
+% By default, they are off at the start of a document,
+% and turned `on' after @end titlepage.
+
+\parseargdef\headings{\csname HEADINGS#1\endcsname}
+
+\def\headingsoff{% non-global headings elimination
+  \evenheadline={\hfil}\evenfootline={\hfil}\evenchapheadline={\hfil}%
+   \oddheadline={\hfil}\oddfootline={\hfil}\oddchapheadline={\hfil}%
+}
+
+\def\HEADINGSoff{{\globaldefs=1 \headingsoff}} % global setting
+\HEADINGSoff  % it's the default
+
+% When we turn headings on, set the page number to 1.
+\def\pageone{
+  \global\pageno=1
+  \global\arabiccount = \pagecount
+}
+
+% For double-sided printing, put current file name in lower left corner,
+% chapter name on inside top of right hand pages, document
+% title on inside top of left hand pages, and page numbers on outside top
+% edge of all pages.
+\def\HEADINGSdouble{%
+\pageone
+\HEADINGSdoublex
+}
+\let\contentsalignmacro = \chappager
+
+% For single-sided printing, chapter title goes across top left of page,
+% page number on top right.
+\def\HEADINGSsingle{%
+\pageone
+\HEADINGSsinglex
+}
+\def\HEADINGSon{\HEADINGSdouble}
+
+\def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
+\let\HEADINGSdoubleafter=\HEADINGSafter
+\def\HEADINGSdoublex{%
+\global\evenfootline={\hfil}
+\global\oddfootline={\hfil}
+\global\evenheadline={\line{\folio\hfil\thistitle}}
+\global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\evenchapheadline={\line{\folio\hfil}}
+\global\oddchapheadline={\line{\hfil\folio}}
+\global\let\contentsalignmacro = \chapoddpage
+}
+
+\def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
+\def\HEADINGSsinglex{%
+\global\evenfootline={\hfil}
+\global\oddfootline={\hfil}
+\global\evenheadline={\line{\thischapter\hfil\folio}}
+\global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\evenchapheadline={\line{\hfil\folio}}
+\global\oddchapheadline={\line{\hfil\folio}}
+\global\let\contentsalignmacro = \chappager
+}
+
+% for @setchapternewpage off
+\def\HEADINGSsinglechapoff{%
+\pageone
+\global\evenfootline={\hfil}
+\global\oddfootline={\hfil}
+\global\evenheadline={\line{\thischapter\hfil\folio}}
+\global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\evenchapheadline=\evenheadline
+\global\oddchapheadline=\oddheadline
+\global\let\contentsalignmacro = \chappager
+}
+
+% Subroutines used in generating headings
+% This produces Day Month Year style of output.
+% Only define if not already defined, in case a txi-??.tex file has set
+% up a different format (e.g., txi-cs.tex does this).
+\ifx\today\thisisundefined
+\def\today{%
+  \number\day\space
+  \ifcase\month
+  \or\putwordMJan\or\putwordMFeb\or\putwordMMar\or\putwordMApr
+  \or\putwordMMay\or\putwordMJun\or\putwordMJul\or\putwordMAug
+  \or\putwordMSep\or\putwordMOct\or\putwordMNov\or\putwordMDec
+  \fi
+  \space\number\year}
+\fi
+
+% @settitle line...  specifies the title of the document, for headings.
+% It generates no output of its own.
+\def\thistitle{\putwordNoTitle}
+\def\settitle{\parsearg{\gdef\thistitle}}
+
+
+\message{tables,}
+% Tables -- @table, @ftable, @vtable, @item(x).
+
+% default indentation of table text
+\newdimen\tableindent \tableindent=.8in
+% default indentation of @itemize and @enumerate text
+\newdimen\itemindent  \itemindent=.3in
+% margin between end of table item and start of table text.
+\newdimen\itemmargin  \itemmargin=.1in
+
+% used internally for \itemindent minus \itemmargin
+\newdimen\itemmax
+
+% Note @table, @ftable, and @vtable define @item, @itemx, etc., with
+% these defs.
+% They also define \itemindex
+% to index the item name in whatever manner is desired (perhaps none).
+
+\newif\ifitemxneedsnegativevskip
+
+\def\itemxpar{\par\ifitemxneedsnegativevskip\nobreak\vskip-\parskip\nobreak\fi}
+
+\def\internalBitem{\smallbreak \parsearg\itemzzz}
+\def\internalBitemx{\itemxpar \parsearg\itemzzz}
+
+\def\itemzzz #1{\begingroup %
+  \advance\hsize by -\rightskip
+  \advance\hsize by -\tableindent
+  \setbox0=\hbox{\itemindicate{#1}}%
+  \itemindex{#1}%
+  \nobreak % This prevents a break before @itemx.
+  %
+  % If the item text does not fit in the space we have, put it on a line
+  % by itself, and do not allow a page break either before or after that
+  % line.  We do not start a paragraph here because then if the next
+  % command is, e.g., @kindex, the whatsit would get put into the
+  % horizontal list on a line by itself, resulting in extra blank space.
+  \ifdim \wd0>\itemmax
+    %
+    % Make this a paragraph so we get the \parskip glue and wrapping,
+    % but leave it ragged-right.
+    \begingroup
+      \advance\leftskip by-\tableindent
+      \advance\hsize by\tableindent
+      \advance\rightskip by0pt plus1fil\relax
+      \leavevmode\unhbox0\par
+    \endgroup
+    %
+    % We're going to be starting a paragraph, but we don't want the
+    % \parskip glue -- logically it's part of the @item we just started.
+    \nobreak \vskip-\parskip
+    %
+    % Stop a page break at the \parskip glue coming up.  However, if
+    % what follows is an environment such as @example, there will be no
+    % \parskip glue; then the negative vskip we just inserted would
+    % cause the example and the item to crash together.  So we use this
+    % bizarre value of 10001 as a signal to \aboveenvbreak to insert
+    % \parskip glue after all.  Section titles are handled this way also.
+    %
+    \penalty 10001
+    \endgroup
+    \itemxneedsnegativevskipfalse
+  \else
+    % The item text fits into the space.  Start a paragraph, so that the
+    % following text (if any) will end up on the same line.
+    \noindent
+    % Do this with kerns and \unhbox so that if there is a footnote in
+    % the item text, it can migrate to the main vertical list and
+    % eventually be printed.
+    \nobreak\kern-\tableindent
+    \dimen0 = \itemmax  \advance\dimen0 by \itemmargin \advance\dimen0 by -\wd0
+    \unhbox0
+    \nobreak\kern\dimen0
+    \endgroup
+    \itemxneedsnegativevskiptrue
+  \fi
+}
+
+\def\item{\errmessage{@item while not in a list environment}}
+\def\itemx{\errmessage{@itemx while not in a list environment}}
+
+% @table, @ftable, @vtable.
+\envdef\table{%
+  \let\itemindex\gobble
+  \tablecheck{table}%
+}
+\envdef\ftable{%
+  \def\itemindex ##1{\doind {fn}{\code{##1}}}%
+  \tablecheck{ftable}%
+}
+\envdef\vtable{%
+  \def\itemindex ##1{\doind {vr}{\code{##1}}}%
+  \tablecheck{vtable}%
+}
+\def\tablecheck#1{%
+  \ifnum \the\catcode`\^^M=\active
+    \endgroup
+    \errmessage{This command won't work in this context; perhaps the problem is
+      that we are \inenvironment\thisenv}%
+    \def\next{\doignore{#1}}%
+  \else
+    \let\next\tablex
+  \fi
+  \next
+}
+\def\tablex#1{%
+  \def\itemindicate{#1}%
+  \parsearg\tabley
+}
+\def\tabley#1{%
+  {%
+    \makevalueexpandable
+    \edef\temp{\noexpand\tablez #1\space\space\space}%
+    \expandafter
+  }\temp \endtablez
+}
+\def\tablez #1 #2 #3 #4\endtablez{%
+  \aboveenvbreak
+  \ifnum 0#1>0 \advance \leftskip by #1\mil \fi
+  \ifnum 0#2>0 \tableindent=#2\mil \fi
+  \ifnum 0#3>0 \advance \rightskip by #3\mil \fi
+  \itemmax=\tableindent
+  \advance \itemmax by -\itemmargin
+  \advance \leftskip by \tableindent
+  \exdentamount=\tableindent
+  \parindent = 0pt
+  \parskip = \smallskipamount
+  \ifdim \parskip=0pt \parskip=2pt \fi
+  \let\item = \internalBitem
+  \let\itemx = \internalBitemx
+}
+\def\Etable{\endgraf\afterenvbreak}
+\let\Eftable\Etable
+\let\Evtable\Etable
+\let\Eitemize\Etable
+\let\Eenumerate\Etable
+
+% This is the counter used by @enumerate, which is really @itemize
+
+\newcount \itemno
+
+\envdef\itemize{\parsearg\doitemize}
+
+\def\doitemize#1{%
+  \aboveenvbreak
+  \itemmax=\itemindent
+  \advance\itemmax by -\itemmargin
+  \advance\leftskip by \itemindent
+  \exdentamount=\itemindent
+  \parindent=0pt
+  \parskip=\smallskipamount
+  \ifdim\parskip=0pt \parskip=2pt \fi
+  %
+  % Try typesetting the item mark so that if the document erroneously says
+  % something like @itemize @samp (intending @table), there's an error
+  % right away at the @itemize.  It's not the best error message in the
+  % world, but it's better than leaving it to the @item.  This means if
+  % the user wants an empty mark, they have to say @w{} not just @w.
+  \def\itemcontents{#1}%
+  \setbox0 = \hbox{\itemcontents}%
+  %
+  % @itemize with no arg is equivalent to @itemize @bullet.
+  \ifx\itemcontents\empty\def\itemcontents{\bullet}\fi
+  %
+  \let\item=\itemizeitem
+}
+
+% Definition of @item while inside @itemize and @enumerate.
+%
+\def\itemizeitem{%
+  \advance\itemno by 1  % for enumerations
+  {\let\par=\endgraf \smallbreak}% reasonable place to break
+  {%
+   % If the document has an @itemize directly after a section title, a
+   % \nobreak will be last on the list, and \sectionheading will have
+   % done a \vskip-\parskip.  In that case, we don't want to zero
+   % parskip, or the item text will crash with the heading.  On the
+   % other hand, when there is normal text preceding the item (as there
+   % usually is), we do want to zero parskip, or there would be too much
+   % space.  In that case, we won't have a \nobreak before.  At least
+   % that's the theory.
+   \ifnum\lastpenalty<10000 \parskip=0in \fi
+   \noindent
+   \hbox to 0pt{\hss \itemcontents \kern\itemmargin}%
+   %
+   \ifinner\else
+     \vadjust{\penalty 1200}% not good to break after first line of item.
+   \fi
+   % We can be in inner vertical mode in a footnote, although an
+   % @itemize looks awful there.
+  }%
+  \flushcr
+}
+
+% \splitoff TOKENS\endmark defines \first to be the first token in
+% TOKENS, and \rest to be the remainder.
+%
+\def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
+
+% Allow an optional argument of an uppercase letter, lowercase letter,
+% or number, to specify the first label in the enumerated list.  No
+% argument is the same as `1'.
+%
+\envparseargdef\enumerate{\enumeratey #1  \endenumeratey}
+\def\enumeratey #1 #2\endenumeratey{%
+  % If we were given no argument, pretend we were given `1'.
+  \def\thearg{#1}%
+  \ifx\thearg\empty \def\thearg{1}\fi
+  %
+  % Detect if the argument is a single token.  If so, it might be a
+  % letter.  Otherwise, the only valid thing it can be is a number.
+  % (We will always have one token, because of the test we just made.
+  % This is a good thing, since \splitoff doesn't work given nothing at
+  % all -- the first parameter is undelimited.)
+  \expandafter\splitoff\thearg\endmark
+  \ifx\rest\empty
+    % Only one token in the argument.  It could still be anything.
+    % A ``lowercase letter'' is one whose \lccode is nonzero.
+    % An ``uppercase letter'' is one whose \lccode is both nonzero, and
+    %   not equal to itself.
+    % Otherwise, we assume it's a number.
+    %
+    % We need the \relax at the end of the \ifnum lines to stop TeX from
+    % continuing to look for a <number>.
+    %
+    \ifnum\lccode\expandafter`\thearg=0\relax
+      \numericenumerate % a number (we hope)
+    \else
+      % It's a letter.
+      \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
+        \lowercaseenumerate % lowercase letter
+      \else
+        \uppercaseenumerate % uppercase letter
+      \fi
+    \fi
+  \else
+    % Multiple tokens in the argument.  We hope it's a number.
+    \numericenumerate
+  \fi
+}
+
+% An @enumerate whose labels are integers.  The starting integer is
+% given in \thearg.
+%
+\def\numericenumerate{%
+  \itemno = \thearg
+  \startenumeration{\the\itemno}%
+}
+
+% The starting (lowercase) letter is in \thearg.
+\def\lowercaseenumerate{%
+  \itemno = \expandafter`\thearg
+  \startenumeration{%
+    % Be sure we're not beyond the end of the alphabet.
+    \ifnum\itemno=0
+      \errmessage{No more lowercase letters in @enumerate; get a bigger
+                  alphabet}%
+    \fi
+    \char\lccode\itemno
+  }%
+}
+
+% The starting (uppercase) letter is in \thearg.
+\def\uppercaseenumerate{%
+  \itemno = \expandafter`\thearg
+  \startenumeration{%
+    % Be sure we're not beyond the end of the alphabet.
+    \ifnum\itemno=0
+      \errmessage{No more uppercase letters in @enumerate; get a bigger
+                  alphabet}
+    \fi
+    \char\uccode\itemno
+  }%
+}
+
+% Call \doitemize, adding a period to the first argument and supplying the
+% common last two arguments.  Also subtract one from the initial value in
+% \itemno, since @item increments \itemno.
+%
+\def\startenumeration#1{%
+  \advance\itemno by -1
+  \doitemize{#1.}\flushcr
+}
+
+
+% @multitable macros
+
+% Macros used to set up halign preamble:
+%
+\let\endsetuptable\relax
+\def\xendsetuptable{\endsetuptable}
+\let\columnfractions\relax
+\def\xcolumnfractions{\columnfractions}
+\newif\ifsetpercent
+
+% #1 is the @columnfraction, usually a decimal number like .5, but might
+% be just 1.  We just use it, whatever it is.
+%
+\def\pickupwholefraction#1 {%
+  \global\advance\colcount by 1
+  \expandafter\xdef\csname col\the\colcount\endcsname{#1\hsize}%
+  \setuptable
+}
+
+\newcount\colcount
+\def\setuptable#1{%
+  \def\firstarg{#1}%
+  \ifx\firstarg\xendsetuptable
+    \let\go = \relax
+  \else
+    \ifx\firstarg\xcolumnfractions
+      \global\setpercenttrue
+    \else
+      \ifsetpercent
+         \let\go\pickupwholefraction
+      \else
+         \global\advance\colcount by 1
+         \setbox0=\hbox{#1\unskip\space}% Add a normal word space as a
+                   % separator; typically that is always in the input, anyway.
+         \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}%
+      \fi
+    \fi
+    \ifx\go\pickupwholefraction
+      % Put the argument back for the \pickupwholefraction call, so
+      % we'll always have a period there to be parsed.
+      \def\go{\pickupwholefraction#1}%
+    \else
+      \let\go = \setuptable
+    \fi%
+  \fi
+  \go
+}
+
+% @headitem starts a heading row, which we typeset in bold.  Assignments
+% have to be global since we are inside the implicit group of an
+% alignment entry.  \everycr below resets \everytab so we don't have to
+% undo it ourselves.
+\def\headitemfont{\b}% for people to use in the template row; not changeable
+\def\headitem{%
+  \checkenv\multitable
+  \crcr
+  \gdef\headitemcrhook{\nobreak}% attempt to avoid page break after headings
+  \global\everytab={\bf}% can't use \headitemfont since the parsing differs
+  \the\everytab % for the first item
+}%
+%
+% default for tables with no headings.
+\let\headitemcrhook=\relax
+%
+\def\tab{\checkenv\multitable &\the\everytab}%
+
+\newtoks\everytab  % insert after every tab.
+%
+\envdef\multitable{%
+  \vskip\parskip
+  \startsavinginserts
+  %
+  % @item within a multitable starts a normal row.
+  % We use \def instead of \let so that if one of the multitable entries
+  % contains an @itemize, we don't choke on the \item (seen as \crcr aka
+  % \endtemplate) expanding \doitemize.
+  \def\item{\crcr}%
+  %
+  \tolerance=9500
+  \hbadness=9500
+  \parskip=0pt
+  \parindent=6pt
+  \overfullrule=0pt
+  \global\colcount=0
+  %
+  \everycr = {%
+    \noalign{%
+      \global\everytab={}% Reset from possible headitem.
+      \global\colcount=0 % Reset the column counter.
+      %
+      % Check for saved footnotes, etc.:
+      \checkinserts
+      %
+      % Perhaps a \nobreak, then reset:
+      \headitemcrhook
+      \global\let\headitemcrhook=\relax
+    }%
+  }%
+  %
+  \parsearg\domultitable
+}
+\def\domultitable#1{%
+  % To parse everything between @multitable and @item:
+  \setuptable#1 \endsetuptable
+  %
+  % This preamble sets up a generic column definition, which will
+  % be used as many times as user calls for columns.
+  % \vtop will set a single line and will also let text wrap and
+  % continue for many paragraphs if desired.
+  \halign\bgroup &%
+    \global\advance\colcount by 1
+    \strut
+    \vtop{%
+      \advance\hsize by -1\leftskip
+      % Find the correct column width
+      \hsize=\expandafter\csname col\the\colcount\endcsname
+      %
+      \rightskip=0pt
+      \ifnum\colcount=1
+        \advance\hsize by\leftskip % Add indent of surrounding text
+      \else
+        % In order to keep entries from bumping into each other.
+        \leftskip=12pt
+        \ifsetpercent \else
+          % If a template has been used
+          \advance\hsize by \leftskip
+        \fi
+      \fi
+      \noindent\ignorespaces##\unskip\strut
+    }\cr
+}
+\def\Emultitable{%
+  \crcr
+  \egroup % end the \halign
+  \global\setpercentfalse
+}
+
+
+\message{conditionals,}
+
+% @iftex, @ifnotdocbook, @ifnothtml, @ifnotinfo, @ifnotplaintext,
+% @ifnotxml always succeed.  They currently do nothing; we don't
+% attempt to check whether the conditionals are properly nested.  But we
+% have to remember that they are conditionals, so that @end doesn't
+% attempt to close an environment group.
+%
+\def\makecond#1{%
+  \expandafter\let\csname #1\endcsname = \relax
+  \expandafter\let\csname iscond.#1\endcsname = 1
+}
+\makecond{iftex}
+\makecond{ifnotdocbook}
+\makecond{ifnothtml}
+\makecond{ifnotinfo}
+\makecond{ifnotplaintext}
+\makecond{ifnotxml}
+
+% Ignore @ignore, @ifhtml, @ifinfo, and the like.
+%
+\def\direntry{\doignore{direntry}}
+\def\documentdescription{\doignore{documentdescription}}
+\def\docbook{\doignore{docbook}}
+\def\html{\doignore{html}}
+\def\ifdocbook{\doignore{ifdocbook}}
+\def\ifhtml{\doignore{ifhtml}}
+\def\ifinfo{\doignore{ifinfo}}
+\def\ifnottex{\doignore{ifnottex}}
+\def\ifplaintext{\doignore{ifplaintext}}
+\def\ifxml{\doignore{ifxml}}
+\def\ignore{\doignore{ignore}}
+\def\menu{\doignore{menu}}
+\def\xml{\doignore{xml}}
+
+% Ignore text until a line `@end #1', keeping track of nested conditionals.
+%
+% A count to remember the depth of nesting.
+\newcount\doignorecount
+
+\def\doignore#1{\begingroup
+  % Scan in ``verbatim'' mode:
+  \obeylines
+  \catcode`\@ = \other
+  \catcode`\{ = \other
+  \catcode`\} = \other
+  %
+  % Make sure that spaces turn into tokens that match what \doignoretext wants.
+  \spaceisspace
+  %
+  % Count number of #1's that we've seen.
+  \doignorecount = 0
+  %
+  % Swallow text until we reach the matching `@end #1'.
+  \dodoignore{#1}%
+}
+
+{ \catcode`_=11 % We want to use \_STOP_ which cannot appear in texinfo source.
+  \obeylines %
+  %
+  \gdef\dodoignore#1{%
+    % #1 contains the command name as a string, e.g., `ifinfo'.
+    %
+    % Define a command to find the next `@end #1'.
+    \long\def\doignoretext##1^^M@end #1{%
+      \doignoretextyyy##1^^M@#1\_STOP_}%
+    %
+    % And this command to find another #1 command, at the beginning of a
+    % line.  (Otherwise, we would consider a line `@c @ifset', for
+    % example, to count as an @ifset for nesting.)
+    \long\def\doignoretextyyy##1^^M@#1##2\_STOP_{\doignoreyyy{##2}\_STOP_}%
+    %
+    % And now expand that command.
+    \doignoretext ^^M%
+  }%
+}
+
+\def\doignoreyyy#1{%
+  \def\temp{#1}%
+  \ifx\temp\empty			% Nothing found.
+    \let\next\doignoretextzzz
+  \else					% Found a nested condition, ...
+    \advance\doignorecount by 1
+    \let\next\doignoretextyyy		% ..., look for another.
+    % If we're here, #1 ends with ^^M\ifinfo (for example).
+  \fi
+  \next #1% the token \_STOP_ is present just after this macro.
+}
+
+% We have to swallow the remaining "\_STOP_".
+%
+\def\doignoretextzzz#1{%
+  \ifnum\doignorecount = 0	% We have just found the outermost @end.
+    \let\next\enddoignore
+  \else				% Still inside a nested condition.
+    \advance\doignorecount by -1
+    \let\next\doignoretext      % Look for the next @end.
+  \fi
+  \next
+}
+
+% Finish off ignored text.
+{ \obeylines%
+  % Ignore anything after the last `@end #1'; this matters in verbatim
+  % environments, where otherwise the newline after an ignored conditional
+  % would result in a blank line in the output.
+  \gdef\enddoignore#1^^M{\endgroup\ignorespaces}%
+}
+
+
+% @set VAR sets the variable VAR to an empty value.
+% @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE.
+%
+% Since we want to separate VAR from REST-OF-LINE (which might be
+% empty), we can't just use \parsearg; we have to insert a space of our
+% own to delimit the rest of the line, and then take it out again if we
+% didn't need it.
+% We rely on the fact that \parsearg sets \catcode`\ =10.
+%
+\parseargdef\set{\setyyy#1 \endsetyyy}
+\def\setyyy#1 #2\endsetyyy{%
+  {%
+    \makevalueexpandable
+    \def\temp{#2}%
+    \edef\next{\gdef\makecsname{SET#1}}%
+    \ifx\temp\empty
+      \next{}%
+    \else
+      \setzzz#2\endsetzzz
+    \fi
+  }%
+}
+% Remove the trailing space \setxxx inserted.
+\def\setzzz#1 \endsetzzz{\next{#1}}
+
+% @clear VAR clears (i.e., unsets) the variable VAR.
+%
+\parseargdef\clear{%
+  {%
+    \makevalueexpandable
+    \global\expandafter\let\csname SET#1\endcsname=\relax
+  }%
+}
+
+% @value{foo} gets the text saved in variable foo.
+\def\value{\begingroup\makevalueexpandable\valuexxx}
+\def\valuexxx#1{\expandablevalue{#1}\endgroup}
+{
+  \catcode`\-=\active \catcode`\_=\active
+  %
+  \gdef\makevalueexpandable{%
+    \let\value = \expandablevalue
+    % We don't want these characters active, ...
+    \catcode`\-=\other \catcode`\_=\other
+    % ..., but we might end up with active ones in the argument if
+    % we're called from @code, as @code{@value{foo-bar_}}, though.
+    % So \let them to their normal equivalents.
+    \let-\normaldash \let_\normalunderscore
+  }
+}
+
+\def\expandablevalue#1{%
+  \expandafter\ifx\csname SET#1\endcsname\relax
+    {[No value for ``#1'']}%
+    \message{Variable `#1', used in @value, is not set.}%
+  \else
+    \csname SET#1\endcsname
+  \fi
+}
+
+% Like \expandablevalue, but completely expandable (the \message in the
+% definition above operates at the execution level of TeX).  Used when
+% writing to auxiliary files, due to the expansion that \write does.
+% If flag is undefined, pass through an unexpanded @value command: maybe it
+% will be set by the time it is read back in.
+%
+% NB flag names containing - or _ may not work here.
+\def\dummyvalue#1{%
+  \expandafter\ifx\csname SET#1\endcsname\relax
+    \string\value{#1}%
+  \else
+    \csname SET#1\endcsname
+  \fi
+}
+
+% Used for @value's in index entries to form the sort key: expand the @value
+% if possible, otherwise sort late.
+\def\indexnofontsvalue#1{%
+  \expandafter\ifx\csname SET#1\endcsname\relax
+    ZZZZZZZ%
+  \else
+    \csname SET#1\endcsname
+  \fi
+}
+
+% @ifset VAR ... @end ifset reads the `...' iff VAR has been defined
+% with @set.
+%
+% To get the special treatment we need for `@end ifset,' we call
+% \makecond and then redefine.
+%
+\makecond{ifset}
+\def\ifset{\parsearg{\doifset{\let\next=\ifsetfail}}}
+\def\doifset#1#2{%
+  {%
+    \makevalueexpandable
+    \let\next=\empty
+    \expandafter\ifx\csname SET#2\endcsname\relax
+      #1% If not set, redefine \next.
+    \fi
+    \expandafter
+  }\next
+}
+\def\ifsetfail{\doignore{ifset}}
+
+% @ifclear VAR ... @end executes the `...' iff VAR has never been
+% defined with @set, or has been undefined with @clear.
+%
+% The `\else' inside the `\doifset' parameter is a trick to reuse the
+% above code: if the variable is not set, do nothing, if it is set,
+% then redefine \next to \ifclearfail.
+%
+\makecond{ifclear}
+\def\ifclear{\parsearg{\doifset{\else \let\next=\ifclearfail}}}
+\def\ifclearfail{\doignore{ifclear}}
+
+% @ifcommandisdefined CMD ... @end executes the `...' if CMD (written
+% without the @) is in fact defined.  We can only feasibly check at the
+% TeX level, so something like `mathcode' is going to considered
+% defined even though it is not a Texinfo command.
+%
+\makecond{ifcommanddefined}
+\def\ifcommanddefined{\parsearg{\doifcmddefined{\let\next=\ifcmddefinedfail}}}
+%
+\def\doifcmddefined#1#2{{%
+    \makevalueexpandable
+    \let\next=\empty
+    \expandafter\ifx\csname #2\endcsname\relax
+      #1% If not defined, \let\next as above.
+    \fi
+    \expandafter
+  }\next
+}
+\def\ifcmddefinedfail{\doignore{ifcommanddefined}}
+
+% @ifcommandnotdefined CMD ... handled similar to @ifclear above.
+\makecond{ifcommandnotdefined}
+\def\ifcommandnotdefined{%
+  \parsearg{\doifcmddefined{\else \let\next=\ifcmdnotdefinedfail}}}
+\def\ifcmdnotdefinedfail{\doignore{ifcommandnotdefined}}
+
+% Set the `txicommandconditionals' variable, so documents have a way to
+% test if the @ifcommand...defined conditionals are available.
+\set txicommandconditionals
+
+% @dircategory CATEGORY  -- specify a category of the dir file
+% which this file should belong to.  Ignore this in TeX.
+\let\dircategory=\comment
+
+% @defininfoenclose.
+\let\definfoenclose=\comment
+
+
+\message{indexing,}
+% Index generation facilities
+
+% Define \newwrite to be identical to plain tex's \newwrite
+% except not \outer, so it can be used within macros and \if's.
+\edef\newwrite{\makecsname{ptexnewwrite}}
+
+% \newindex {foo} defines an index named IX.
+% It automatically defines \IXindex such that
+% \IXindex ...rest of line... puts an entry in the index IX.
+% It also defines \IXindfile to be the number of the output channel for
+% the file that accumulates this index.  The file's extension is IX.
+% The name of an index should be no more than 2 characters long
+% for the sake of vms.
+%
+\def\newindex#1{%
+  \expandafter\chardef\csname#1indfile\endcsname=0
+  \expandafter\xdef\csname#1index\endcsname{%     % Define @#1index
+    \noexpand\doindex{#1}}
+}
+
+% @defindex foo  ==  \newindex{foo}
+%
+\def\defindex{\parsearg\newindex}
+
+% Define @defcodeindex, like @defindex except put all entries in @code.
+%
+\def\defcodeindex{\parsearg\newcodeindex}
+%
+\def\newcodeindex#1{%
+  \expandafter\chardef\csname#1indfile\endcsname=0
+  \expandafter\xdef\csname#1index\endcsname{%
+    \noexpand\docodeindex{#1}}%
+}
+
+% The default indices:
+\newindex{cp}%      concepts,
+\newcodeindex{fn}%  functions,
+\newcodeindex{vr}%  variables,
+\newcodeindex{tp}%  types,
+\newcodeindex{ky}%  keys
+\newcodeindex{pg}%  and programs.
+
+
+% @synindex foo bar    makes index foo feed into index bar.
+% Do this instead of @defindex foo if you don't want it as a separate index.
+%
+% @syncodeindex foo bar   similar, but put all entries made for index foo
+% inside @code.
+%
+\def\synindex#1 #2 {\dosynindex\doindex{#1}{#2}}
+\def\syncodeindex#1 #2 {\dosynindex\docodeindex{#1}{#2}}
+
+% #1 is \doindex or \docodeindex, #2 the index getting redefined (foo),
+% #3 the target index (bar).
+\def\dosynindex#1#2#3{%
+  \requireopenindexfile{#3}%
+  % redefine \fooindfile:
+  \expandafter\let\expandafter\temp\expandafter=\csname#3indfile\endcsname
+  \expandafter\let\csname#2indfile\endcsname=\temp
+  % redefine \fooindex:
+  \expandafter\xdef\csname#2index\endcsname{\noexpand#1{#3}}%
+}
+
+% Define \doindex, the driver for all index macros.
+% Argument #1 is generated by the calling \fooindex macro,
+% and it is the two-letter name of the index.
+
+\def\doindex#1{\edef\indexname{#1}\parsearg\doindexxxx}
+\def\doindexxxx #1{\doind{\indexname}{#1}}
+
+% like the previous two, but they put @code around the argument.
+\def\docodeindex#1{\edef\indexname{#1}\parsearg\docodeindexxxx}
+\def\docodeindexxxx #1{\docind{\indexname}{#1}}
+
+
+% Used for the aux, toc and index files to prevent expansion of Texinfo
+% commands.
+%
+\def\atdummies{%
+  \definedummyletter\@%
+  \definedummyletter\ %
+  \definedummyletter\{%
+  \definedummyletter\}%
+  \definedummyletter\&%
+  %
+  % Do the redefinitions.
+  \definedummies
+  \otherbackslash
+}
+
+% \definedummyword defines \#1 as \string\#1\space, thus effectively
+% preventing its expansion.  This is used only for control words,
+% not control letters, because the \space would be incorrect for
+% control characters, but is needed to separate the control word
+% from whatever follows.
+%
+% These can be used both for control words that take an argument and
+% those that do not.  If it is followed by {arg} in the input, then
+% that will dutifully get written to the index (or wherever).
+%
+% For control letters, we have \definedummyletter, which omits the
+% space.
+%
+\def\definedummyword  #1{\def#1{\string#1\space}}%
+\def\definedummyletter#1{\def#1{\string#1}}%
+\let\definedummyaccent\definedummyletter
+
+% Called from \atdummies to prevent the expansion of commands.
+%
+\def\definedummies{%
+  %
+  \let\commondummyword\definedummyword
+  \let\commondummyletter\definedummyletter
+  \let\commondummyaccent\definedummyaccent
+  \commondummiesnofonts
+  %
+  \definedummyletter\_%
+  \definedummyletter\-%
+  %
+  % Non-English letters.
+  \definedummyword\AA
+  \definedummyword\AE
+  \definedummyword\DH
+  \definedummyword\L
+  \definedummyword\O
+  \definedummyword\OE
+  \definedummyword\TH
+  \definedummyword\aa
+  \definedummyword\ae
+  \definedummyword\dh
+  \definedummyword\exclamdown
+  \definedummyword\l
+  \definedummyword\o
+  \definedummyword\oe
+  \definedummyword\ordf
+  \definedummyword\ordm
+  \definedummyword\questiondown
+  \definedummyword\ss
+  \definedummyword\th
+  %
+  % Although these internal commands shouldn't show up, sometimes they do.
+  \definedummyword\bf
+  \definedummyword\gtr
+  \definedummyword\hat
+  \definedummyword\less
+  \definedummyword\sf
+  \definedummyword\sl
+  \definedummyword\tclose
+  \definedummyword\tt
+  %
+  \definedummyword\LaTeX
+  \definedummyword\TeX
+  %
+  % Assorted special characters.
+  \definedummyword\ampchar
+  \definedummyword\atchar
+  \definedummyword\arrow
+  \definedummyword\backslashchar
+  \definedummyword\bullet
+  \definedummyword\comma
+  \definedummyword\copyright
+  \definedummyword\registeredsymbol
+  \definedummyword\dots
+  \definedummyword\enddots
+  \definedummyword\entrybreak
+  \definedummyword\equiv
+  \definedummyword\error
+  \definedummyword\euro
+  \definedummyword\expansion
+  \definedummyword\geq
+  \definedummyword\guillemetleft
+  \definedummyword\guillemetright
+  \definedummyword\guilsinglleft
+  \definedummyword\guilsinglright
+  \definedummyword\lbracechar
+  \definedummyword\leq
+  \definedummyword\mathopsup
+  \definedummyword\minus
+  \definedummyword\ogonek
+  \definedummyword\pounds
+  \definedummyword\point
+  \definedummyword\print
+  \definedummyword\quotedblbase
+  \definedummyword\quotedblleft
+  \definedummyword\quotedblright
+  \definedummyword\quoteleft
+  \definedummyword\quoteright
+  \definedummyword\quotesinglbase
+  \definedummyword\rbracechar
+  \definedummyword\result
+  \definedummyword\sub
+  \definedummyword\sup
+  \definedummyword\textdegree
+  %
+  \definedummyword\subentry
+  %
+  % We want to disable all macros so that they are not expanded by \write.
+  \macrolist
+  \let\value\dummyvalue
+  %
+  \normalturnoffactive
+}
+
+% \commondummiesnofonts: common to \definedummies and \indexnofonts.
+% Define \commondummyletter, \commondummyaccent and \commondummyword before
+% using.  Used for accents, font commands, and various control letters.
+%
+\def\commondummiesnofonts{%
+  % Control letters and accents.
+  \commondummyletter\!%
+  \commondummyaccent\"%
+  \commondummyaccent\'%
+  \commondummyletter\*%
+  \commondummyaccent\,%
+  \commondummyletter\.%
+  \commondummyletter\/%
+  \commondummyletter\:%
+  \commondummyaccent\=%
+  \commondummyletter\?%
+  \commondummyaccent\^%
+  \commondummyaccent\`%
+  \commondummyaccent\~%
+  \commondummyword\u
+  \commondummyword\v
+  \commondummyword\H
+  \commondummyword\dotaccent
+  \commondummyword\ogonek
+  \commondummyword\ringaccent
+  \commondummyword\tieaccent
+  \commondummyword\ubaraccent
+  \commondummyword\udotaccent
+  \commondummyword\dotless
+  %
+  % Texinfo font commands.
+  \commondummyword\b
+  \commondummyword\i
+  \commondummyword\r
+  \commondummyword\sansserif
+  \commondummyword\sc
+  \commondummyword\slanted
+  \commondummyword\t
+  %
+  % Commands that take arguments.
+  \commondummyword\abbr
+  \commondummyword\acronym
+  \commondummyword\anchor
+  \commondummyword\cite
+  \commondummyword\code
+  \commondummyword\command
+  \commondummyword\dfn
+  \commondummyword\dmn
+  \commondummyword\email
+  \commondummyword\emph
+  \commondummyword\env
+  \commondummyword\file
+  \commondummyword\image
+  \commondummyword\indicateurl
+  \commondummyword\inforef
+  \commondummyword\kbd
+  \commondummyword\key
+  \commondummyword\math
+  \commondummyword\option
+  \commondummyword\pxref
+  \commondummyword\ref
+  \commondummyword\samp
+  \commondummyword\strong
+  \commondummyword\tie
+  \commondummyword\U
+  \commondummyword\uref
+  \commondummyword\url
+  \commondummyword\var
+  \commondummyword\verb
+  \commondummyword\w
+  \commondummyword\xref
+}
+
+\let\indexlbrace\relax
+\let\indexrbrace\relax
+\let\indexatchar\relax
+\let\indexbackslash\relax
+
+{\catcode`\@=0
+\catcode`\\=13
+  @gdef@backslashdisappear{@def\{}}
+}
+
+{
+\catcode`\<=13
+\catcode`\-=13
+\catcode`\`=13
+  \gdef\indexnonalnumdisappear{%
+    \expandafter\ifx\csname SETtxiindexlquoteignore\endcsname\relax\else
+      % @set txiindexlquoteignore makes us ignore left quotes in the sort term.
+      % (Introduced for FSFS 2nd ed.)
+      \let`=\empty
+    \fi
+    %
+    \expandafter\ifx\csname SETtxiindexbackslashignore\endcsname\relax\else
+      \backslashdisappear
+    \fi
+    %
+    \expandafter\ifx\csname SETtxiindexhyphenignore\endcsname\relax\else
+      \def-{}%
+    \fi
+    \expandafter\ifx\csname SETtxiindexlessthanignore\endcsname\relax\else
+      \def<{}%
+    \fi
+    \expandafter\ifx\csname SETtxiindexatsignignore\endcsname\relax\else
+      \def\@{}%
+    \fi
+  }
+
+  \gdef\indexnonalnumreappear{%
+    \let-\normaldash
+    \let<\normalless
+  }
+}
+
+
+% \indexnofonts is used when outputting the strings to sort the index
+% by, and when constructing control sequence names.  It eliminates all
+% control sequences and just writes whatever the best ASCII sort string
+% would be for a given command (usually its argument).
+%
+\def\indexnofonts{%
+  % Accent commands should become @asis.
+  \def\commondummyaccent##1{\let##1\asis}%
+  % We can just ignore other control letters.
+  \def\commondummyletter##1{\let##1\empty}%
+  % All control words become @asis by default; overrides below.
+  \let\commondummyword\commondummyaccent
+  \commondummiesnofonts
+  %
+  % Don't no-op \tt, since it isn't a user-level command
+  % and is used in the definitions of the active chars like <, >, |, etc.
+  % Likewise with the other plain tex font commands.
+  %\let\tt=\asis
+  %
+  \def\ { }%
+  \def\@{@}%
+  \def\_{\normalunderscore}%
+  \def\-{}% @- shouldn't affect sorting
+  %
+  \uccode`\1=`\{ \uppercase{\def\{{1}}%
+  \uccode`\1=`\} \uppercase{\def\}{1}}%
+  \let\lbracechar\{%
+  \let\rbracechar\}%
+  %
+  % Non-English letters.
+  \def\AA{AA}%
+  \def\AE{AE}%
+  \def\DH{DZZ}%
+  \def\L{L}%
+  \def\OE{OE}%
+  \def\O{O}%
+  \def\TH{TH}%
+  \def\aa{aa}%
+  \def\ae{ae}%
+  \def\dh{dzz}%
+  \def\exclamdown{!}%
+  \def\l{l}%
+  \def\oe{oe}%
+  \def\ordf{a}%
+  \def\ordm{o}%
+  \def\o{o}%
+  \def\questiondown{?}%
+  \def\ss{ss}%
+  \def\th{th}%
+  %
+  \let\do\indexnofontsdef
+  %
+  \do\LaTeX{LaTeX}%
+  \do\TeX{TeX}%
+  %
+  % Assorted special characters.
+  \do\atchar{@}%
+  \do\arrow{->}%
+  \do\bullet{bullet}%
+  \do\comma{,}%
+  \do\copyright{copyright}%
+  \do\dots{...}%
+  \do\enddots{...}%
+  \do\equiv{==}%
+  \do\error{error}%
+  \do\euro{euro}%
+  \do\expansion{==>}%
+  \do\geq{>=}%
+  \do\guillemetleft{<<}%
+  \do\guillemetright{>>}%
+  \do\guilsinglleft{<}%
+  \do\guilsinglright{>}%
+  \do\leq{<=}%
+  \do\lbracechar{\{}%
+  \do\minus{-}%
+  \do\point{.}%
+  \do\pounds{pounds}%
+  \do\print{-|}%
+  \do\quotedblbase{"}%
+  \do\quotedblleft{"}%
+  \do\quotedblright{"}%
+  \do\quoteleft{`}%
+  \do\quoteright{'}%
+  \do\quotesinglbase{,}%
+  \do\rbracechar{\}}%
+  \do\registeredsymbol{R}%
+  \do\result{=>}%
+  \do\textdegree{o}%
+  %
+  % We need to get rid of all macros, leaving only the arguments (if present).
+  % Of course this is not nearly correct, but it is the best we can do for now.
+  % makeinfo does not expand macros in the argument to @deffn, which ends up
+  % writing an index entry, and texindex isn't prepared for an index sort entry
+  % that starts with \.
+  %
+  % Since macro invocations are followed by braces, we can just redefine them
+  % to take a single TeX argument.  The case of a macro invocation that
+  % goes to end-of-line is not handled.
+  %
+  \macrolist
+  \let\value\indexnofontsvalue
+}
+
+% Give the control sequence a definition that removes the {} that follows
+% its use, e.g. @AA{} -> AA
+\def\indexnofontsdef#1#2{\def#1##1{#2}}%
+
+
+
+
+% #1 is the index name, #2 is the entry text.
+\def\doind#1#2{%
+  \iflinks
+  {%
+    %
+    \requireopenindexfile{#1}%
+    \edef\writeto{\csname#1indfile\endcsname}%
+    %
+    \def\indextext{#2}%
+    \safewhatsit\doindwrite
+  }%
+  \fi
+}
+
+% Same as \doind, but for code indices
+\def\docind#1#2{%
+  \iflinks
+  {%
+    %
+    \requireopenindexfile{#1}%
+    \edef\writeto{\csname#1indfile\endcsname}%
+    %
+    \def\indextext{#2}%
+    \safewhatsit\docindwrite
+  }%
+  \fi
+}
+
+% Check if an index file has been opened, and if not, open it.
+\def\requireopenindexfile#1{%
+\ifnum\csname #1indfile\endcsname=0
+  \expandafter\newwrite \csname#1indfile\endcsname
+  \edef\suffix{#1}%
+  % A .fls suffix would conflict with the file extension for the output
+  % of -recorder, so use .f1s instead.
+  \ifx\suffix\indexisfl\def\suffix{f1}\fi
+  % Open the file
+  \immediate\openout\csname#1indfile\endcsname \jobname.\suffix
+  % Using \immediate above here prevents an object entering into the current
+  % box, which could confound checks such as those in \safewhatsit for
+  % preceding skips.
+  \typeout{Writing index file \jobname.\suffix}%
+\fi}
+\def\indexisfl{fl}
+
+% Definition for writing index entry sort key.
+{
+\catcode`\-=13
+\gdef\indexwritesortas{%
+  \begingroup
+  \indexnonalnumreappear
+  \indexwritesortasxxx}
+\gdef\indexwritesortasxxx#1{%
+  \xdef\indexsortkey{#1}\endgroup}
+}
+
+\def\indexwriteseealso#1{
+  \gdef\pagenumbertext{\string\seealso{#1}}%
+}
+\def\indexwriteseeentry#1{
+  \gdef\pagenumbertext{\string\seeentry{#1}}%
+}
+
+% The default definitions
+\def\sortas#1{}%
+\def\seealso#1{\i{\putwordSeeAlso}\ #1}% for sorted index file only
+\def\putwordSeeAlso{See also}
+\def\seeentry#1{\i{\putwordSee}\ #1}% for sorted index file only
+
+
+% Given index entry text like "aaa @subentry bbb @sortas{ZZZ}":
+%   * Set \bracedtext to "{aaa}{bbb}"
+%   * Set \fullindexsortkey to "aaa @subentry ZZZ"
+%   * If @seealso occurs, set \pagenumbertext
+%
+\def\splitindexentry#1{%
+  \gdef\fullindexsortkey{}%
+  \xdef\bracedtext{}%
+  \def\sep{}%
+  \def\seealso##1{}%
+  \def\seeentry##1{}%
+  \expandafter\doindexsegment#1\subentry\finish\subentry
+}
+
+% append the results from the next segment
+\def\doindexsegment#1\subentry{%
+  \def\segment{#1}%
+  \ifx\segment\isfinish
+  \else
+    %
+    % Fully expand the segment, throwing away any @sortas directives, and
+    % trim spaces.
+    \edef\trimmed{\segment}%
+    \edef\trimmed{\expandafter\eatspaces\expandafter{\trimmed}}%
+    \ifincodeindex
+      \edef\trimmed{\noexpand\code{\trimmed}}%
+    \fi
+    %
+    \xdef\bracedtext{\bracedtext{\trimmed}}%
+    %
+    % Get the string to sort by.  Process the segment with all
+    % font commands turned off.
+    \bgroup
+      \let\sortas\indexwritesortas
+      \let\seealso\indexwriteseealso
+      \let\seeentry\indexwriteseeentry
+      \indexnofonts
+      % The braces around the commands are recognized by texindex.
+      \def\lbracechar{{\string\indexlbrace}}%
+      \def\rbracechar{{\string\indexrbrace}}%
+      \let\{=\lbracechar
+      \let\}=\rbracechar
+      \def\@{{\string\indexatchar}}%
+      \def\atchar##1{\@}%
+      \def\backslashchar{{\string\indexbackslash}}%
+      \uccode`\~=`\\ \uppercase{\let~\backslashchar}%
+      %
+      \let\indexsortkey\empty
+      \global\let\pagenumbertext\empty
+      % Execute the segment and throw away the typeset output.  This executes
+      % any @sortas or @seealso commands in this segment.
+      \setbox\dummybox = \hbox{\segment}%
+      \ifx\indexsortkey\empty{%
+        \indexnonalnumdisappear
+        \xdef\trimmed{\segment}%
+        \xdef\trimmed{\expandafter\eatspaces\expandafter{\trimmed}}%
+        \xdef\indexsortkey{\trimmed}%
+        \ifx\indexsortkey\empty\xdef\indexsortkey{ }\fi
+      }\fi
+      %
+      % Append to \fullindexsortkey.
+      \edef\tmp{\gdef\noexpand\fullindexsortkey{%
+                  \fullindexsortkey\sep\indexsortkey}}%
+      \tmp
+    \egroup
+    \def\sep{\subentry}%
+    %
+    \expandafter\doindexsegment
+  \fi
+}
+\def\isfinish{\finish}%
+\newbox\dummybox % used above
+
+\let\subentry\relax
+
+% Use \ instead of @ in index files.  To support old texi2dvi and texindex.
+% This works without changing the escape character used in the toc or aux
+% files because the index entries are fully expanded here, and \string uses
+% the current value of \escapechar.
+\def\escapeisbackslash{\escapechar=`\\}
+
+% Use \ in index files by default.  texi2dvi didn't support @ as the escape
+% character (as it checked for "\entry" in the files, and not "@entry").  When
+% the new version of texi2dvi has had a chance to become more prevalent, then
+% the escape character can change back to @ again.  This should be an easy
+% change to make now because both @ and \ are only used as escape characters in
+% index files, never standing for themselves.
+%
+\set txiindexescapeisbackslash
+
+% Write the entry in \indextext to the index file.
+%
+
+\newif\ifincodeindex
+\def\doindwrite{\incodeindexfalse\doindwritex}
+\def\docindwrite{\incodeindextrue\doindwritex}
+
+\def\doindwritex{%
+  \maybemarginindex
+  %
+  \atdummies
+  %
+  \expandafter\ifx\csname SETtxiindexescapeisbackslash\endcsname\relax\else
+    \escapeisbackslash
+  \fi
+  %
+  % For texindex which always views { and } as separators.
+  \def\{{\lbracechar{}}%
+  \def\}{\rbracechar{}}%
+  \uccode`\~=`\\ \uppercase{\def~{\backslashchar{}}}%
+  %
+  % Split the entry into primary entry and any subentries, and get the index
+  % sort key.
+  \splitindexentry\indextext
+  %
+  % Set up the complete index entry, with both the sort key and
+  % the original text, including any font commands.  We write
+  % three arguments to \entry to the .?? file (four in the
+  % subentry case), texindex reduces to two when writing the .??s
+  % sorted result.
+  %
+  \edef\temp{%
+    \write\writeto{%
+      \string\entry{\fullindexsortkey}%
+        {\ifx\pagenumbertext\empty\noexpand\folio\else\pagenumbertext\fi}%
+        \bracedtext}%
+  }%
+  \temp
+}
+
+% Put the index entry in the margin if desired (undocumented).
+\def\maybemarginindex{%
+  \ifx\SETmarginindex\relax\else
+    \insert\margin{\hbox{\vrule height8pt depth3pt width0pt \relax\indextext}}%
+  \fi
+}
+\let\SETmarginindex=\relax
+
+
+% Take care of unwanted page breaks/skips around a whatsit:
+%
+% If a skip is the last thing on the list now, preserve it
+% by backing up by \lastskip, doing the \write, then inserting
+% the skip again.  Otherwise, the whatsit generated by the
+% \write or \pdfdest will make \lastskip zero.  The result is that
+% sequences like this:
+% @end defun
+% @tindex whatever
+% @defun ...
+% will have extra space inserted, because the \medbreak in the
+% start of the @defun won't see the skip inserted by the @end of
+% the previous defun.
+%
+% But don't do any of this if we're not in vertical mode.  We
+% don't want to do a \vskip and prematurely end a paragraph.
+%
+% Avoid page breaks due to these extra skips, too.
+%
+% But wait, there is a catch there:
+% We'll have to check whether \lastskip is zero skip.  \ifdim is not
+% sufficient for this purpose, as it ignores stretch and shrink parts
+% of the skip.  The only way seems to be to check the textual
+% representation of the skip.
+%
+% The following is almost like \def\zeroskipmacro{0.0pt} except that
+% the ``p'' and ``t'' characters have catcode \other, not 11 (letter).
+%
+\edef\zeroskipmacro{\expandafter\the\csname z@skip\endcsname}
+%
+\newskip\whatsitskip
+\newcount\whatsitpenalty
+%
+% ..., ready, GO:
+%
+\def\safewhatsit#1{\ifhmode
+  #1%
+ \else
+  % \lastskip and \lastpenalty cannot both be nonzero simultaneously.
+  \whatsitskip = \lastskip
+  \edef\lastskipmacro{\the\lastskip}%
+  \whatsitpenalty = \lastpenalty
+  %
+  % If \lastskip is nonzero, that means the last item was a
+  % skip.  And since a skip is discardable, that means this
+  % -\whatsitskip glue we're inserting is preceded by a
+  % non-discardable item, therefore it is not a potential
+  % breakpoint, therefore no \nobreak needed.
+  \ifx\lastskipmacro\zeroskipmacro
+  \else
+    \vskip-\whatsitskip
+  \fi
+  %
+  #1%
+  %
+  \ifx\lastskipmacro\zeroskipmacro
+    % If \lastskip was zero, perhaps the last item was a penalty, and
+    % perhaps it was >=10000, e.g., a \nobreak.  In that case, we want
+    % to re-insert the same penalty (values >10000 are used for various
+    % signals); since we just inserted a non-discardable item, any
+    % following glue (such as a \parskip) would be a breakpoint.  For example:
+    %   @deffn deffn-whatever
+    %   @vindex index-whatever
+    %   Description.
+    % would allow a break between the index-whatever whatsit
+    % and the "Description." paragraph.
+    \ifnum\whatsitpenalty>9999 \penalty\whatsitpenalty \fi
+  \else
+    % On the other hand, if we had a nonzero \lastskip,
+    % this make-up glue would be preceded by a non-discardable item
+    % (the whatsit from the \write), so we must insert a \nobreak.
+    \nobreak\vskip\whatsitskip
+  \fi
+\fi}
+
+% The index entry written in the file actually looks like
+%  \entry {sortstring}{page}{topic}
+% or
+%  \entry {sortstring}{page}{topic}{subtopic}
+% The texindex program reads in these files and writes files
+% containing these kinds of lines:
+%  \initial {c}
+%     before the first topic whose initial is c
+%  \entry {topic}{pagelist}
+%     for a topic that is used without subtopics
+%  \primary {topic}
+%  \entry {topic}{}
+%     for the beginning of a topic that is used with subtopics
+%  \secondary {subtopic}{pagelist}
+%     for each subtopic.
+%  \secondary {subtopic}{}
+%     for a subtopic with sub-subtopics
+%  \tertiary {subtopic}{subsubtopic}{pagelist}
+%     for each sub-subtopic.
+
+% Define the user-accessible indexing commands
+% @findex, @vindex, @kindex, @cindex.
+
+\def\findex {\fnindex}
+\def\kindex {\kyindex}
+\def\cindex {\cpindex}
+\def\vindex {\vrindex}
+\def\tindex {\tpindex}
+\def\pindex {\pgindex}
+
+% Define the macros used in formatting output of the sorted index material.
+
+% @printindex causes a particular index (the ??s file) to get printed.
+% It does not print any chapter heading (usually an @unnumbered).
+%
+\parseargdef\printindex{\begingroup
+  \dobreak \chapheadingskip{10000}%
+  %
+  \smallfonts \rm
+  \tolerance = 9500
+  \plainfrenchspacing
+  \everypar = {}% don't want the \kern\-parindent from indentation suppression.
+  %
+  % See comment in \requireopenindexfile.
+  \def\indexname{#1}\ifx\indexname\indexisfl\def\indexname{f1}\fi
+  %
+  % See if the index file exists and is nonempty.
+  \openin 1 \jobname.\indexname s
+  \ifeof 1
+    % \enddoublecolumns gets confused if there is no text in the index,
+    % and it loses the chapter title and the aux file entries for the
+    % index.  The easiest way to prevent this problem is to make sure
+    % there is some text.
+    \putwordIndexNonexistent
+    \typeout{No file \jobname.\indexname s.}%
+  \else
+    % If the index file exists but is empty, then \openin leaves \ifeof
+    % false.  We have to make TeX try to read something from the file, so
+    % it can discover if there is anything in it.
+    \read 1 to \thisline
+    \ifeof 1
+      \putwordIndexIsEmpty
+    \else
+      \expandafter\printindexzz\thisline\relax\relax\finish%
+    \fi
+  \fi
+  \closein 1
+\endgroup}
+
+% If the index file starts with a backslash, forgo reading the index
+% file altogether.  If somebody upgrades texinfo.tex they may still have
+% old index files using \ as the escape character.  Reading this would
+% at best lead to typesetting garbage, at worst a TeX syntax error.
+\def\printindexzz#1#2\finish{%
+  \expandafter\ifx\csname SETtxiindexescapeisbackslash\endcsname\relax
+    \uccode`\~=`\\ \uppercase{\if\noexpand~}\noexpand#1
+      \expandafter\ifx\csname SETtxiskipindexfileswithbackslash\endcsname\relax
+\errmessage{%
+ERROR: A sorted index file in an obsolete format was skipped.
+To fix this problem, please upgrade your version of 'texi2dvi'
+or 'texi2pdf' to that at <https://ftp.gnu.org/gnu/texinfo>.
+If you are using an old version of 'texindex' (part of the Texinfo
+distribution), you may also need to upgrade to a newer version (at least 6.0).
+You may be able to typeset the index if you run
+'texindex \jobname.\indexname' yourself.
+You could also try setting the 'txiindexescapeisbackslash' flag by
+running a command like
+'texi2dvi -t "@set txiindexescapeisbackslash" \jobname.texi'.  If you do
+this, Texinfo will try to use index files in the old format.
+If you continue to have problems, deleting the index files and starting again
+might help (with 'rm \jobname.?? \jobname.??s')%
+}%
+      \else
+        (Skipped sorted index file in obsolete format)
+      \fi
+    \else
+      \begindoublecolumns
+      \input \jobname.\indexname s
+      \enddoublecolumns
+    \fi
+  \else
+    \begindoublecolumns
+    \catcode`\\=0\relax
+    %
+    % Make @ an escape character to give macros a chance to work.  This
+    % should work because we (hopefully) don't otherwise use @ in index files.
+    %\catcode`\@=12\relax
+    \catcode`\@=0\relax
+    \input \jobname.\indexname s
+    \enddoublecolumns
+  \fi
+}
+
+% These macros are used by the sorted index file itself.
+% Change them to control the appearance of the index.
+
+{\catcode`\/=13 \catcode`\-=13 \catcode`\^=13 \catcode`\~=13 \catcode`\_=13
+\catcode`\|=13 \catcode`\<=13 \catcode`\>=13 \catcode`\+=13 \catcode`\"=13
+\catcode`\$=3
+\gdef\initialglyphs{%
+  % special control sequences used in the index sort key
+  \let\indexlbrace\{%
+  \let\indexrbrace\}%
+  \let\indexatchar\@%
+  \def\indexbackslash{\math{\backslash}}%
+  %
+  % Some changes for non-alphabetic characters.  Using the glyphs from the
+  % math fonts looks more consistent than the typewriter font used elsewhere
+  % for these characters.
+  \uccode`\~=`\\ \uppercase{\def~{\math{\backslash}}}
+  %
+  % In case @\ is used for backslash
+  \uppercase{\let\\=~}
+  % Can't get bold backslash so don't use bold forward slash
+  \catcode`\/=13
+  \def/{{\secrmnotbold \normalslash}}%
+  \def-{{\normaldash\normaldash}}% en dash `--'
+  \def^{{\chapbf \normalcaret}}%
+  \def~{{\chapbf \normaltilde}}%
+  \def\_{%
+     \leavevmode \kern.07em \vbox{\hrule width.3em height.1ex}\kern .07em }%
+  \def|{$\vert$}%
+  \def<{$\less$}%
+  \def>{$\gtr$}%
+  \def+{$\normalplus$}%
+}}
+
+\def\initial{%
+  \bgroup
+  \initialglyphs
+  \initialx
+}
+
+\def\initialx#1{%
+  % Remove any glue we may have, we'll be inserting our own.
+  \removelastskip
+  %
+  % We like breaks before the index initials, so insert a bonus.
+  % The glue before the bonus allows a little bit of space at the
+  % bottom of a column to reduce an increase in inter-line spacing.
+  \nobreak
+  \vskip 0pt plus 5\baselineskip
+  \penalty -300
+  \vskip 0pt plus -5\baselineskip
+  %
+  % Typeset the initial.  Making this add up to a whole number of
+  % baselineskips increases the chance of the dots lining up from column
+  % to column.  It still won't often be perfect, because of the stretch
+  % we need before each entry, but it's better.
+  %
+  % No shrink because it confuses \balancecolumns.
+  \vskip 1.67\baselineskip plus 1\baselineskip
+  \leftline{\secfonts \kern-0.05em \secbf #1}%
+  % \secfonts is inside the argument of \leftline so that the change of
+  % \baselineskip will not affect any glue inserted before the vbox that
+  % \leftline creates.
+  % Do our best not to break after the initial.
+  \nobreak
+  \vskip .33\baselineskip plus .1\baselineskip
+  \egroup % \initialglyphs
+}
+
+\newdimen\entryrightmargin
+\entryrightmargin=0pt
+
+% \entry typesets a paragraph consisting of the text (#1), dot leaders, and
+% then page number (#2) flushed to the right margin.  It is used for index
+% and table of contents entries.  The paragraph is indented by \leftskip.
+%
+\def\entry{%
+  \begingroup
+    %
+    % Start a new paragraph if necessary, so our assignments below can't
+    % affect previous text.
+    \par
+    %
+    % No extra space above this paragraph.
+    \parskip = 0in
+    %
+    % When reading the text of entry, convert explicit line breaks
+    % from @* into spaces.  The user might give these in long section
+    % titles, for instance.
+    \def\*{\unskip\space\ignorespaces}%
+    \def\entrybreak{\hfil\break}% An undocumented command
+    %
+    % Swallow the left brace of the text (first parameter):
+    \afterassignment\doentry
+    \let\temp =
+}
+\def\entrybreak{\unskip\space\ignorespaces}%
+\def\doentry{%
+    % Save the text of the entry
+    \global\setbox\boxA=\hbox\bgroup
+    \bgroup % Instead of the swallowed brace.
+      \noindent
+      \aftergroup\finishentry
+      % And now comes the text of the entry.
+      % Not absorbing as a macro argument reduces the chance of problems
+      % with catcodes occurring.
+}
+{\catcode`\@=11
+\gdef\finishentry#1{%
+    \egroup % end box A
+    \dimen@ = \wd\boxA % Length of text of entry
+    \global\setbox\boxA=\hbox\bgroup
+      \unhbox\boxA
+      % #1 is the page number.
+      %
+      % Get the width of the page numbers, and only use
+      % leaders if they are present.
+      \global\setbox\boxB = \hbox{#1}%
+      \ifdim\wd\boxB = 0pt
+        \null\nobreak\hfill\ %
+      \else
+        %
+        \null\nobreak\indexdotfill % Have leaders before the page number.
+        %
+        \ifpdforxetex
+          \pdfgettoks#1.%
+          \hskip\skip\thinshrinkable\the\toksA
+        \else
+          \hskip\skip\thinshrinkable #1%
+        \fi
+      \fi
+    \egroup % end \boxA
+    \ifdim\wd\boxB = 0pt
+      \noindent\unhbox\boxA\par
+      \nobreak
+    \else\bgroup
+      % We want the text of the entries to be aligned to the left, and the
+      % page numbers to be aligned to the right.
+      %
+      \parindent = 0pt
+      \advance\leftskip by 0pt plus 1fil
+      \advance\leftskip by 0pt plus -1fill
+      \rightskip = 0pt plus -1fil
+      \advance\rightskip by 0pt plus 1fill
+      % Cause last line, which could consist of page numbers on their own
+      % if the list of page numbers is long, to be aligned to the right.
+      \parfillskip=0pt plus -1fill
+      %
+      \advance\rightskip by \entryrightmargin
+      % Determine how far we can stretch into the margin.
+      % This allows, e.g., "Appendix H  GNU Free Documentation License" to
+      % fit on one line in @letterpaper format.
+      \ifdim\entryrightmargin>2.1em
+        \dimen@i=2.1em
+      \else
+        \dimen@i=0em
+      \fi
+      \advance \parfillskip by 0pt minus 1\dimen@i
+      %
+      \dimen@ii = \hsize
+      \advance\dimen@ii by -1\leftskip
+      \advance\dimen@ii by -1\entryrightmargin
+      \advance\dimen@ii by 1\dimen@i
+      \ifdim\wd\boxA > \dimen@ii % If the entry doesn't fit in one line
+      \ifdim\dimen@ > 0.8\dimen@ii   % due to long index text
+        % Try to split the text roughly evenly.  \dimen@ will be the length of
+        % the first line.
+        \dimen@ = 0.7\dimen@
+        \dimen@ii = \hsize
+        \ifnum\dimen@>\dimen@ii
+          % If the entry is too long (for example, if it needs more than
+          % two lines), use all the space in the first line.
+          \dimen@ = \dimen@ii
+        \fi
+        \advance\leftskip by 0pt plus 1fill % ragged right
+        \advance \dimen@ by 1\rightskip
+        \parshape = 2 0pt \dimen@ 0em \dimen@ii
+        % Ideally we'd add a finite glue at the end of the first line only,
+        % instead of using \parshape with explicit line lengths, but TeX
+        % doesn't seem to provide a way to do such a thing.
+        %
+        % Indent all lines but the first one.
+        \advance\leftskip by 1em
+        \advance\parindent by -1em
+      \fi\fi
+      \indent % start paragraph
+      \unhbox\boxA
+      %
+      % Do not prefer a separate line ending with a hyphen to fewer lines.
+      \finalhyphendemerits = 0
+      %
+      % Word spacing - no stretch
+      \spaceskip=\fontdimen2\font minus \fontdimen4\font
+      %
+      \linepenalty=1000  % Discourage line breaks.
+      \hyphenpenalty=5000  % Discourage hyphenation.
+      %
+      \par % format the paragraph
+    \egroup % The \vbox
+    \fi
+  \endgroup
+}}
+
+\newskip\thinshrinkable
+\skip\thinshrinkable=.15em minus .15em
+
+% Like plain.tex's \dotfill, except uses up at least 1 em.
+% The filll stretch here overpowers both the fil and fill stretch to push
+% the page number to the right.
+\def\indexdotfill{\cleaders
+  \hbox{$\mathsurround=0pt \mkern1.5mu.\mkern1.5mu$}\hskip 1em plus 1filll}
+
+
+\def\primary #1{\line{#1\hfil}}
+
+\def\secondary{\indententry{0.5cm}}
+\def\tertiary{\indententry{1cm}}
+
+\def\indententry#1#2#3{%
+  \bgroup
+  \leftskip=#1
+  \entry{#2}{#3}%
+  \egroup
+}
+
+% Define two-column mode, which we use to typeset indexes.
+% Adapted from the TeXbook, page 416, which is to say,
+% the manmac.tex format used to print the TeXbook itself.
+\catcode`\@=11  % private names
+
+\newbox\partialpage
+\newdimen\doublecolumnhsize
+
+\def\begindoublecolumns{\begingroup % ended by \enddoublecolumns
+  % If not much space left on page, start a new page.
+  \ifdim\pagetotal>0.8\vsize\vfill\eject\fi
+  %
+  % Grab any single-column material above us.
+  \output = {%
+    \savetopmark
+    %
+    \global\setbox\partialpage = \vbox{%
+      % Unvbox the main output page.
+      \unvbox\PAGE
+      \kern-\topskip \kern\baselineskip
+    }%
+  }%
+  \eject % run that output routine to set \partialpage
+  %
+  % Use the double-column output routine for subsequent pages.
+  \output = {\doublecolumnout}%
+  %
+  % Change the page size parameters.  We could do this once outside this
+  % routine, in each of @smallbook, @afourpaper, and the default 8.5x11
+  % format, but then we repeat the same computation.  Repeating a couple
+  % of assignments once per index is clearly meaningless for the
+  % execution time, so we may as well do it in one place.
+  %
+  % First we halve the line length, less a little for the gutter between
+  % the columns.  We compute the gutter based on the line length, so it
+  % changes automatically with the paper format.  The magic constant
+  % below is chosen so that the gutter has the same value (well, +-<1pt)
+  % as it did when we hard-coded it.
+  %
+  % We put the result in a separate register, \doublecolumhsize, so we
+  % can restore it in \pagesofar, after \hsize itself has (potentially)
+  % been clobbered.
+  %
+  \doublecolumnhsize = \hsize
+    \advance\doublecolumnhsize by -.04154\hsize
+    \divide\doublecolumnhsize by 2
+  \hsize = \doublecolumnhsize
+  %
+  % Get the available space for the double columns -- the normal
+  % (undoubled) page height minus any material left over from the
+  % previous page.
+  \advance\vsize by -\ht\partialpage
+  \vsize = 2\vsize
+  %
+  % For the benefit of balancing columns
+  \advance\baselineskip by 0pt plus 0.5pt
+}
+
+% The double-column output routine for all double-column pages except
+% the last, which is done by \balancecolumns.
+%
+\def\doublecolumnout{%
+  %
+  \savetopmark
+  \splittopskip=\topskip \splitmaxdepth=\maxdepth
+  \dimen@ = \vsize
+  \divide\dimen@ by 2
+  %
+  % box0 will be the left-hand column, box2 the right.
+  \setbox0=\vsplit\PAGE to\dimen@ \setbox2=\vsplit\PAGE to\dimen@
+  \global\advance\vsize by 2\ht\partialpage
+  \onepageout\pagesofar % empty except for the first time we are called
+  \unvbox\PAGE
+  \penalty\outputpenalty
+}
+%
+% Re-output the contents of the output page -- any previous material,
+% followed by the two boxes we just split, in box0 and box2.
+\def\pagesofar{%
+  \unvbox\partialpage
+  %
+  \hsize = \doublecolumnhsize
+  \wd0=\hsize \wd2=\hsize
+  \hbox to\txipagewidth{\box0\hfil\box2}%
+}
+
+
+% Finished with double columns.
+\def\enddoublecolumns{%
+  % The following penalty ensures that the page builder is exercised
+  % _before_ we change the output routine.  This is necessary in the
+  % following situation:
+  %
+  % The last section of the index consists only of a single entry.
+  % Before this section, \pagetotal is less than \pagegoal, so no
+  % break occurs before the last section starts.  However, the last
+  % section, consisting of \initial and the single \entry, does not
+  % fit on the page and has to be broken off.  Without the following
+  % penalty the page builder will not be exercised until \eject
+  % below, and by that time we'll already have changed the output
+  % routine to the \balancecolumns version, so the next-to-last
+  % double-column page will be processed with \balancecolumns, which
+  % is wrong:  The two columns will go to the main vertical list, with
+  % the broken-off section in the recent contributions.  As soon as
+  % the output routine finishes, TeX starts reconsidering the page
+  % break.  The two columns and the broken-off section both fit on the
+  % page, because the two columns now take up only half of the page
+  % goal.  When TeX sees \eject from below which follows the final
+  % section, it invokes the new output routine that we've set after
+  % \balancecolumns below; \onepageout will try to fit the two columns
+  % and the final section into the vbox of \txipageheight (see
+  % \pagebody), causing an overfull box.
+  %
+  % Note that glue won't work here, because glue does not exercise the
+  % page builder, unlike penalties (see The TeXbook, pp. 280-281).
+  \penalty0
+  %
+  \output = {%
+    % Split the last of the double-column material.
+    \savetopmark
+    \balancecolumns
+  }%
+  \eject % call the \output just set
+  \ifdim\pagetotal=0pt
+    % Having called \balancecolumns once, we do not
+    % want to call it again.  Therefore, reset \output to its normal
+    % definition right away.
+    \global\output=\expandafter{\the\defaultoutput}
+    %
+    \endgroup % started in \begindoublecolumns
+    % Leave the double-column material on the current page, no automatic
+    % page break.
+    \box\balancedcolumns
+    %
+    % \pagegoal was set to the doubled \vsize above, since we restarted
+    % the current page.  We're now back to normal single-column
+    % typesetting, so reset \pagegoal to the normal \vsize.
+    \global\vsize = \txipageheight %
+    \pagegoal = \txipageheight %
+  \else
+    % We had some left-over material.  This might happen when \doublecolumnout
+    % is called in \balancecolumns.  Try again.
+    \expandafter\enddoublecolumns
+  \fi
+}
+\newbox\balancedcolumns
+\setbox\balancedcolumns=\vbox{shouldnt see this}%
+%
+% Only called for the last of the double column material.  \doublecolumnout
+% does the others.
+\def\balancecolumns{%
+  \setbox0 = \vbox{\unvbox\PAGE}% like \box255 but more efficient, see p.120.
+  \dimen@ = \ht0
+  \ifdim\dimen@<7\baselineskip
+    % Don't split a short final column in two.
+    \setbox2=\vbox{}%
+    \global\setbox\balancedcolumns=\vbox{\pagesofar}%
+  \else
+    % double the leading vertical space
+    \advance\dimen@ by \topskip
+    \advance\dimen@ by-\baselineskip
+    \divide\dimen@ by 2 % target to split to
+    \dimen@ii = \dimen@
+    \splittopskip = \topskip
+    % Loop until left column is at least as high as the right column.
+    {%
+      \vbadness = 10000
+      \loop
+        \global\setbox3 = \copy0
+        \global\setbox1 = \vsplit3 to \dimen@
+      \ifdim\ht1<\ht3
+        \global\advance\dimen@ by 1pt
+      \repeat
+    }%
+    % Now the left column is in box 1, and the right column in box 3.
+    %
+    % Check whether the left column has come out higher than the page itself.
+    % (Note that we have doubled \vsize for the double columns, so
+    % the actual height of the page is 0.5\vsize).
+    \ifdim2\ht1>\vsize
+      % It appears that we have been called upon to balance too much material.
+      % Output some of it with \doublecolumnout, leaving the rest on the page.
+      \setbox\PAGE=\box0
+      \doublecolumnout
+    \else
+      % Compare the heights of the two columns.
+      \ifdim4\ht1>5\ht3
+        % Column heights are too different, so don't make their bottoms
+        % flush with each other.
+        \setbox2=\vbox to \ht1 {\unvbox3\vfill}%
+        \setbox0=\vbox to \ht1 {\unvbox1\vfill}%
+      \else
+        % Make column bottoms flush with each other.
+        \setbox2=\vbox to\ht1{\unvbox3\unskip}%
+        \setbox0=\vbox to\ht1{\unvbox1\unskip}%
+      \fi
+      \global\setbox\balancedcolumns=\vbox{\pagesofar}%
+    \fi
+  \fi
+  %
+}
+\catcode`\@ = \other
+
+
+\message{sectioning,}
+% Chapters, sections, etc.
+
+% Let's start with @part.
+\outer\parseargdef\part{\partzzz{#1}}
+\def\partzzz#1{%
+  \chapoddpage
+  \null
+  \vskip.3\vsize  % move it down on the page a bit
+  \begingroup
+    \noindent \titlefonts\rm #1\par % the text
+    \let\lastnode=\empty      % no node to associate with
+    \writetocentry{part}{#1}{}% but put it in the toc
+    \headingsoff              % no headline or footline on the part page
+    % This outputs a mark at the end of the page that clears \thischapter
+    % and \thissection, as is done in \startcontents.
+    \let\pchapsepmacro\relax
+    \chapmacro{}{Yomitfromtoc}{}%
+    \chapoddpage
+  \endgroup
+}
+
+% \unnumberedno is an oxymoron.  But we count the unnumbered
+% sections so that we can refer to them unambiguously in the pdf
+% outlines by their "section number".  We avoid collisions with chapter
+% numbers by starting them at 10000.  (If a document ever has 10000
+% chapters, we're in trouble anyway, I'm sure.)
+\newcount\unnumberedno \unnumberedno = 10000
+\newcount\chapno
+\newcount\secno        \secno=0
+\newcount\subsecno     \subsecno=0
+\newcount\subsubsecno  \subsubsecno=0
+
+% This counter is funny since it counts through charcodes of letters A, B, ...
+\newcount\appendixno  \appendixno = `\@
+%
+% \def\appendixletter{\char\the\appendixno}
+% We do the following ugly conditional instead of the above simple
+% construct for the sake of pdftex, which needs the actual
+% letter in the expansion, not just typeset.
+%
+\def\appendixletter{%
+  \ifnum\appendixno=`A A%
+  \else\ifnum\appendixno=`B B%
+  \else\ifnum\appendixno=`C C%
+  \else\ifnum\appendixno=`D D%
+  \else\ifnum\appendixno=`E E%
+  \else\ifnum\appendixno=`F F%
+  \else\ifnum\appendixno=`G G%
+  \else\ifnum\appendixno=`H H%
+  \else\ifnum\appendixno=`I I%
+  \else\ifnum\appendixno=`J J%
+  \else\ifnum\appendixno=`K K%
+  \else\ifnum\appendixno=`L L%
+  \else\ifnum\appendixno=`M M%
+  \else\ifnum\appendixno=`N N%
+  \else\ifnum\appendixno=`O O%
+  \else\ifnum\appendixno=`P P%
+  \else\ifnum\appendixno=`Q Q%
+  \else\ifnum\appendixno=`R R%
+  \else\ifnum\appendixno=`S S%
+  \else\ifnum\appendixno=`T T%
+  \else\ifnum\appendixno=`U U%
+  \else\ifnum\appendixno=`V V%
+  \else\ifnum\appendixno=`W W%
+  \else\ifnum\appendixno=`X X%
+  \else\ifnum\appendixno=`Y Y%
+  \else\ifnum\appendixno=`Z Z%
+  % The \the is necessary, despite appearances, because \appendixletter is
+  % expanded while writing the .toc file.  \char\appendixno is not
+  % expandable, thus it is written literally, thus all appendixes come out
+  % with the same letter (or @) in the toc without it.
+  \else\char\the\appendixno
+  \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
+  \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi}
+
+% Each @chapter defines these (using marks) as the number+name, number
+% and name of the chapter.  Page headings and footings can use
+% these.  @section does likewise.
+\def\thischapter{}
+\def\thischapternum{}
+\def\thischaptername{}
+\def\thissection{}
+\def\thissectionnum{}
+\def\thissectionname{}
+
+\newcount\absseclevel % used to calculate proper heading level
+\newcount\secbase\secbase=0 % @raisesections/@lowersections modify this count
+
+% @raisesections: treat @section as chapter, @subsection as section, etc.
+\def\raisesections{\global\advance\secbase by -1}
+
+% @lowersections: treat @chapter as section, @section as subsection, etc.
+\def\lowersections{\global\advance\secbase by 1}
+
+% we only have subsub.
+\chardef\maxseclevel = 3
+%
+% A numbered section within an unnumbered changes to unnumbered too.
+% To achieve this, remember the "biggest" unnum. sec. we are currently in:
+\chardef\unnlevel = \maxseclevel
+%
+% Trace whether the current chapter is an appendix or not:
+% \chapheadtype is "N" or "A", unnumbered chapters are ignored.
+\def\chapheadtype{N}
+
+% Choose a heading macro
+% #1 is heading type
+% #2 is heading level
+% #3 is text for heading
+\def\genhead#1#2#3{%
+  % Compute the abs. sec. level:
+  \absseclevel=#2
+  \advance\absseclevel by \secbase
+  % Make sure \absseclevel doesn't fall outside the range:
+  \ifnum \absseclevel < 0
+    \absseclevel = 0
+  \else
+    \ifnum \absseclevel > 3
+      \absseclevel = 3
+    \fi
+  \fi
+  % The heading type:
+  \def\headtype{#1}%
+  \if \headtype U%
+    \ifnum \absseclevel < \unnlevel
+      \chardef\unnlevel = \absseclevel
+    \fi
+  \else
+    % Check for appendix sections:
+    \ifnum \absseclevel = 0
+      \edef\chapheadtype{\headtype}%
+    \else
+      \if \headtype A\if \chapheadtype N%
+	\errmessage{@appendix... within a non-appendix chapter}%
+      \fi\fi
+    \fi
+    % Check for numbered within unnumbered:
+    \ifnum \absseclevel > \unnlevel
+      \def\headtype{U}%
+    \else
+      \chardef\unnlevel = 3
+    \fi
+  \fi
+  % Now print the heading:
+  \if \headtype U%
+    \ifcase\absseclevel
+	\unnumberedzzz{#3}%
+    \or \unnumberedseczzz{#3}%
+    \or \unnumberedsubseczzz{#3}%
+    \or \unnumberedsubsubseczzz{#3}%
+    \fi
+  \else
+    \if \headtype A%
+      \ifcase\absseclevel
+	  \appendixzzz{#3}%
+      \or \appendixsectionzzz{#3}%
+      \or \appendixsubseczzz{#3}%
+      \or \appendixsubsubseczzz{#3}%
+      \fi
+    \else
+      \ifcase\absseclevel
+	  \chapterzzz{#3}%
+      \or \seczzz{#3}%
+      \or \numberedsubseczzz{#3}%
+      \or \numberedsubsubseczzz{#3}%
+      \fi
+    \fi
+  \fi
+  \suppressfirstparagraphindent
+}
+
+% an interface:
+\def\numhead{\genhead N}
+\def\apphead{\genhead A}
+\def\unnmhead{\genhead U}
+
+% @chapter, @appendix, @unnumbered.  Increment top-level counter, reset
+% all lower-level sectioning counters to zero.
+%
+% Also set \chaplevelprefix, which we prepend to @float sequence numbers
+% (e.g., figures), q.v.  By default (before any chapter), that is empty.
+\let\chaplevelprefix = \empty
+%
+\outer\parseargdef\chapter{\numhead0{#1}} % normally numhead0 calls chapterzzz
+\def\chapterzzz#1{%
+  % section resetting is \global in case the chapter is in a group, such
+  % as an @include file.
+  \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
+    \global\advance\chapno by 1
+  %
+  % Used for \float.
+  \gdef\chaplevelprefix{\the\chapno.}%
+  \resetallfloatnos
+  %
+  % \putwordChapter can contain complex things in translations.
+  \toks0=\expandafter{\putwordChapter}%
+  \message{\the\toks0 \space \the\chapno}%
+  %
+  % Write the actual heading.
+  \chapmacro{#1}{Ynumbered}{\the\chapno}%
+  %
+  % So @section and the like are numbered underneath this chapter.
+  \global\let\section = \numberedsec
+  \global\let\subsection = \numberedsubsec
+  \global\let\subsubsection = \numberedsubsubsec
+}
+
+\outer\parseargdef\appendix{\apphead0{#1}} % normally calls appendixzzz
+%
+\def\appendixzzz#1{%
+  \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
+    \global\advance\appendixno by 1
+  \gdef\chaplevelprefix{\appendixletter.}%
+  \resetallfloatnos
+  %
+  % \putwordAppendix can contain complex things in translations.
+  \toks0=\expandafter{\putwordAppendix}%
+  \message{\the\toks0 \space \appendixletter}%
+  %
+  \chapmacro{#1}{Yappendix}{\appendixletter}%
+  %
+  \global\let\section = \appendixsec
+  \global\let\subsection = \appendixsubsec
+  \global\let\subsubsection = \appendixsubsubsec
+}
+
+% normally unnmhead0 calls unnumberedzzz:
+\outer\parseargdef\unnumbered{\unnmhead0{#1}}
+\def\unnumberedzzz#1{%
+  \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
+    \global\advance\unnumberedno by 1
+  %
+  % Since an unnumbered has no number, no prefix for figures.
+  \global\let\chaplevelprefix = \empty
+  \resetallfloatnos
+  %
+  % This used to be simply \message{#1}, but TeX fully expands the
+  % argument to \message.  Therefore, if #1 contained @-commands, TeX
+  % expanded them.  For example, in `@unnumbered The @cite{Book}', TeX
+  % expanded @cite (which turns out to cause errors because \cite is meant
+  % to be executed, not expanded).
+  %
+  % Anyway, we don't want the fully-expanded definition of @cite to appear
+  % as a result of the \message, we just want `@cite' itself.  We use
+  % \the<toks register> to achieve this: TeX expands \the<toks> only once,
+  % simply yielding the contents of <toks register>.  (We also do this for
+  % the toc entries.)
+  \toks0 = {#1}%
+  \message{(\the\toks0)}%
+  %
+  \chapmacro{#1}{Ynothing}{\the\unnumberedno}%
+  %
+  \global\let\section = \unnumberedsec
+  \global\let\subsection = \unnumberedsubsec
+  \global\let\subsubsection = \unnumberedsubsubsec
+}
+
+% @centerchap is like @unnumbered, but the heading is centered.
+\outer\parseargdef\centerchap{%
+  \let\centerparametersmaybe = \centerparameters
+  \unnmhead0{#1}%
+  \let\centerparametersmaybe = \relax
+}
+
+% @top is like @unnumbered.
+\let\top\unnumbered
+
+% Sections.
+%
+\outer\parseargdef\numberedsec{\numhead1{#1}} % normally calls seczzz
+\def\seczzz#1{%
+  \global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
+  \sectionheading{#1}{sec}{Ynumbered}{\the\chapno.\the\secno}%
+}
+
+% normally calls appendixsectionzzz:
+\outer\parseargdef\appendixsection{\apphead1{#1}}
+\def\appendixsectionzzz#1{%
+  \global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
+  \sectionheading{#1}{sec}{Yappendix}{\appendixletter.\the\secno}%
+}
+\let\appendixsec\appendixsection
+
+% normally calls unnumberedseczzz:
+\outer\parseargdef\unnumberedsec{\unnmhead1{#1}}
+\def\unnumberedseczzz#1{%
+  \global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
+  \sectionheading{#1}{sec}{Ynothing}{\the\unnumberedno.\the\secno}%
+}
+
+% Subsections.
+%
+% normally calls numberedsubseczzz:
+\outer\parseargdef\numberedsubsec{\numhead2{#1}}
+\def\numberedsubseczzz#1{%
+  \global\subsubsecno=0  \global\advance\subsecno by 1
+  \sectionheading{#1}{subsec}{Ynumbered}{\the\chapno.\the\secno.\the\subsecno}%
+}
+
+% normally calls appendixsubseczzz:
+\outer\parseargdef\appendixsubsec{\apphead2{#1}}
+\def\appendixsubseczzz#1{%
+  \global\subsubsecno=0  \global\advance\subsecno by 1
+  \sectionheading{#1}{subsec}{Yappendix}%
+                 {\appendixletter.\the\secno.\the\subsecno}%
+}
+
+% normally calls unnumberedsubseczzz:
+\outer\parseargdef\unnumberedsubsec{\unnmhead2{#1}}
+\def\unnumberedsubseczzz#1{%
+  \global\subsubsecno=0  \global\advance\subsecno by 1
+  \sectionheading{#1}{subsec}{Ynothing}%
+                 {\the\unnumberedno.\the\secno.\the\subsecno}%
+}
+
+% Subsubsections.
+%
+% normally numberedsubsubseczzz:
+\outer\parseargdef\numberedsubsubsec{\numhead3{#1}}
+\def\numberedsubsubseczzz#1{%
+  \global\advance\subsubsecno by 1
+  \sectionheading{#1}{subsubsec}{Ynumbered}%
+                 {\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno}%
+}
+
+% normally appendixsubsubseczzz:
+\outer\parseargdef\appendixsubsubsec{\apphead3{#1}}
+\def\appendixsubsubseczzz#1{%
+  \global\advance\subsubsecno by 1
+  \sectionheading{#1}{subsubsec}{Yappendix}%
+                 {\appendixletter.\the\secno.\the\subsecno.\the\subsubsecno}%
+}
+
+% normally unnumberedsubsubseczzz:
+\outer\parseargdef\unnumberedsubsubsec{\unnmhead3{#1}}
+\def\unnumberedsubsubseczzz#1{%
+  \global\advance\subsubsecno by 1
+  \sectionheading{#1}{subsubsec}{Ynothing}%
+                 {\the\unnumberedno.\the\secno.\the\subsecno.\the\subsubsecno}%
+}
+
+% These macros control what the section commands do, according
+% to what kind of chapter we are in (ordinary, appendix, or unnumbered).
+% Define them by default for a numbered chapter.
+\let\section = \numberedsec
+\let\subsection = \numberedsubsec
+\let\subsubsection = \numberedsubsubsec
+
+% Define @majorheading, @heading and @subheading
+
+\def\majorheading{%
+  {\advance\chapheadingskip by 10pt \chapbreak }%
+  \parsearg\chapheadingzzz
+}
+
+\def\chapheading{\chapbreak \parsearg\chapheadingzzz}
+\def\chapheadingzzz#1{%
+  \vbox{\chapfonts \raggedtitlesettings #1\par}%
+  \nobreak\bigskip \nobreak
+  \suppressfirstparagraphindent
+}
+
+% @heading, @subheading, @subsubheading.
+\parseargdef\heading{\sectionheading{#1}{sec}{Yomitfromtoc}{}
+  \suppressfirstparagraphindent}
+\parseargdef\subheading{\sectionheading{#1}{subsec}{Yomitfromtoc}{}
+  \suppressfirstparagraphindent}
+\parseargdef\subsubheading{\sectionheading{#1}{subsubsec}{Yomitfromtoc}{}
+  \suppressfirstparagraphindent}
+
+% These macros generate a chapter, section, etc. heading only
+% (including whitespace, linebreaking, etc. around it),
+% given all the information in convenient, parsed form.
+
+% Args are the skip and penalty (usually negative)
+\def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
+
+% Parameter controlling skip before chapter headings (if needed)
+\newskip\chapheadingskip
+
+% Define plain chapter starts, and page on/off switching for it.
+\def\chapbreak{\dobreak \chapheadingskip {-4000}}
+
+% Start a new page
+\def\chappager{\par\vfill\supereject}
+
+% \chapoddpage - start on an odd page for a new chapter
+% Because \domark is called before \chapoddpage, the filler page will
+% get the headings for the next chapter, which is wrong.  But we don't
+% care -- we just disable all headings on the filler page.
+\def\chapoddpage{%
+  \chappager
+  \ifodd\pageno \else
+    \begingroup
+      \headingsoff
+      \null
+      \chappager
+    \endgroup
+  \fi
+}
+
+\parseargdef\setchapternewpage{\csname CHAPPAG#1\endcsname}
+
+\def\CHAPPAGoff{%
+\global\let\contentsalignmacro = \chappager
+\global\let\pchapsepmacro=\chapbreak
+\global\def\HEADINGSon{\HEADINGSsinglechapoff}}
+
+\def\CHAPPAGon{%
+\global\let\contentsalignmacro = \chappager
+\global\let\pchapsepmacro=\chappager
+\global\def\HEADINGSon{\HEADINGSsingle}}
+
+\def\CHAPPAGodd{%
+\global\let\contentsalignmacro = \chapoddpage
+\global\let\pchapsepmacro=\chapoddpage
+\global\def\HEADINGSon{\HEADINGSdouble}}
+
+\CHAPPAGon
+
+% \chapmacro - Chapter opening.
+%
+% #1 is the text, #2 is the section type (Ynumbered, Ynothing,
+% Yappendix, Yomitfromtoc), #3 the chapter number.
+% Not used for @heading series.
+%
+% To test against our argument.
+\def\Ynothingkeyword{Ynothing}
+\def\Yappendixkeyword{Yappendix}
+\def\Yomitfromtockeyword{Yomitfromtoc}
+%
+\def\chapmacro#1#2#3{%
+  \expandafter\ifx\thisenv\titlepage\else
+    \checkenv{}% chapters, etc., should not start inside an environment.
+  \fi
+  % Insert the first mark before the heading break (see notes for \domark).
+  \let\prevchapterdefs=\currentchapterdefs
+  \let\prevsectiondefs=\currentsectiondefs
+  \gdef\currentsectiondefs{\gdef\thissectionname{}\gdef\thissectionnum{}%
+                        \gdef\thissection{}}%
+  %
+  \def\temptype{#2}%
+  \ifx\temptype\Ynothingkeyword
+    \gdef\currentchapterdefs{\gdef\thischaptername{#1}\gdef\thischapternum{}%
+                          \gdef\thischapter{\thischaptername}}%
+  \else\ifx\temptype\Yomitfromtockeyword
+    \gdef\currentchapterdefs{\gdef\thischaptername{#1}\gdef\thischapternum{}%
+                          \gdef\thischapter{}}%
+  \else\ifx\temptype\Yappendixkeyword
+    \toks0={#1}%
+    \xdef\currentchapterdefs{%
+      \gdef\noexpand\thischaptername{\the\toks0}%
+      \gdef\noexpand\thischapternum{\appendixletter}%
+      % \noexpand\putwordAppendix avoids expanding indigestible
+      % commands in some of the translations.
+      \gdef\noexpand\thischapter{\noexpand\putwordAppendix{}
+                                 \noexpand\thischapternum:
+                                 \noexpand\thischaptername}%
+    }%
+  \else
+    \toks0={#1}%
+    \xdef\currentchapterdefs{%
+      \gdef\noexpand\thischaptername{\the\toks0}%
+      \gdef\noexpand\thischapternum{\the\chapno}%
+      % \noexpand\putwordChapter avoids expanding indigestible
+      % commands in some of the translations.
+      \gdef\noexpand\thischapter{\noexpand\putwordChapter{}
+                                 \noexpand\thischapternum:
+                                 \noexpand\thischaptername}%
+    }%
+  \fi\fi\fi
+  %
+  % Output the mark.  Pass it through \safewhatsit, to take care of
+  % the preceding space.
+  \safewhatsit\domark
+  %
+  % Insert the chapter heading break.
+  \pchapsepmacro
+  %
+  % Now the second mark, after the heading break.  No break points
+  % between here and the heading.
+  \let\prevchapterdefs=\currentchapterdefs
+  \let\prevsectiondefs=\currentsectiondefs
+  \domark
+  %
+  {%
+    \chapfonts \rm
+    \let\footnote=\errfootnoteheading % give better error message
+    %
+    % Have to define \currentsection before calling \donoderef, because the
+    % xref code eventually uses it.  On the other hand, it has to be called
+    % after \pchapsepmacro, or the headline will change too soon.
+    \gdef\currentsection{#1}%
+    %
+    % Only insert the separating space if we have a chapter/appendix
+    % number, and don't print the unnumbered ``number''.
+    \ifx\temptype\Ynothingkeyword
+      \setbox0 = \hbox{}%
+      \def\toctype{unnchap}%
+    \else\ifx\temptype\Yomitfromtockeyword
+      \setbox0 = \hbox{}% contents like unnumbered, but no toc entry
+      \def\toctype{omit}%
+    \else\ifx\temptype\Yappendixkeyword
+      \setbox0 = \hbox{\putwordAppendix{} #3\enspace}%
+      \def\toctype{app}%
+    \else
+      \setbox0 = \hbox{#3\enspace}%
+      \def\toctype{numchap}%
+    \fi\fi\fi
+    %
+    % Write the toc entry for this chapter.  Must come before the
+    % \donoderef, because we include the current node name in the toc
+    % entry, and \donoderef resets it to empty.
+    \writetocentry{\toctype}{#1}{#3}%
+    %
+    % For pdftex, we have to write out the node definition (aka, make
+    % the pdfdest) after any page break, but before the actual text has
+    % been typeset.  If the destination for the pdf outline is after the
+    % text, then jumping from the outline may wind up with the text not
+    % being visible, for instance under high magnification.
+    \donoderef{#2}%
+    %
+    % Typeset the actual heading.
+    \nobreak % Avoid page breaks at the interline glue.
+    \vbox{\raggedtitlesettings \hangindent=\wd0 \centerparametersmaybe
+          \unhbox0 #1\par}%
+  }%
+  \nobreak\bigskip % no page break after a chapter title
+  \nobreak
+}
+
+% @centerchap -- centered and unnumbered.
+\let\centerparametersmaybe = \relax
+\def\centerparameters{%
+  \advance\rightskip by 3\rightskip
+  \leftskip = \rightskip
+  \parfillskip = 0pt
+}
+
+
+% Section titles.  These macros combine the section number parts and
+% call the generic \sectionheading to do the printing.
+%
+\newskip\secheadingskip
+\def\secheadingbreak{\dobreak \secheadingskip{-1000}}
+
+% Subsection titles.
+\newskip\subsecheadingskip
+\def\subsecheadingbreak{\dobreak \subsecheadingskip{-500}}
+
+% Subsubsection titles.
+\def\subsubsecheadingskip{\subsecheadingskip}
+\def\subsubsecheadingbreak{\subsecheadingbreak}
+
+
+% Print any size, any type, section title.
+%
+% #1 is the text of the title,
+% #2 is the section level (sec/subsec/subsubsec),
+% #3 is the section type (Ynumbered, Ynothing, Yappendix, Yomitfromtoc),
+% #4 is the section number.
+%
+\def\seckeyword{sec}
+%
+\def\sectionheading#1#2#3#4{%
+  {%
+    \def\sectionlevel{#2}%
+    \def\temptype{#3}%
+    %
+    % It is ok for the @heading series commands to appear inside an
+    % environment (it's been historically allowed, though the logic is
+    % dubious), but not the others.
+    \ifx\temptype\Yomitfromtockeyword\else
+      \checkenv{}% non-@*heading should not be in an environment.
+    \fi
+    \let\footnote=\errfootnoteheading
+    %
+    % Switch to the right set of fonts.
+    \csname #2fonts\endcsname \rm
+    %
+    % Insert first mark before the heading break (see notes for \domark).
+    \let\prevsectiondefs=\currentsectiondefs
+    \ifx\temptype\Ynothingkeyword
+      \ifx\sectionlevel\seckeyword
+        \gdef\currentsectiondefs{\gdef\thissectionname{#1}\gdef\thissectionnum{}%
+                              \gdef\thissection{\thissectionname}}%
+      \fi
+    \else\ifx\temptype\Yomitfromtockeyword
+      % Don't redefine \thissection.
+    \else\ifx\temptype\Yappendixkeyword
+      \ifx\sectionlevel\seckeyword
+        \toks0={#1}%
+        \xdef\currentsectiondefs{%
+          \gdef\noexpand\thissectionname{\the\toks0}%
+          \gdef\noexpand\thissectionnum{#4}%
+          % \noexpand\putwordSection avoids expanding indigestible
+          % commands in some of the translations.
+          \gdef\noexpand\thissection{\noexpand\putwordSection{}
+                                     \noexpand\thissectionnum:
+                                     \noexpand\thissectionname}%
+        }%
+      \fi
+    \else
+      \ifx\sectionlevel\seckeyword
+        \toks0={#1}%
+        \xdef\currentsectiondefs{%
+          \gdef\noexpand\thissectionname{\the\toks0}%
+          \gdef\noexpand\thissectionnum{#4}%
+          % \noexpand\putwordSection avoids expanding indigestible
+          % commands in some of the translations.
+          \gdef\noexpand\thissection{\noexpand\putwordSection{}
+                                     \noexpand\thissectionnum:
+                                     \noexpand\thissectionname}%
+        }%
+      \fi
+    \fi\fi\fi
+    %
+    % Go into vertical mode.  Usually we'll already be there, but we
+    % don't want the following whatsit to end up in a preceding paragraph
+    % if the document didn't happen to have a blank line.
+    \par
+    %
+    % Output the mark.  Pass it through \safewhatsit, to take care of
+    % the preceding space.
+    \safewhatsit\domark
+    %
+    % Insert space above the heading.
+    \csname #2headingbreak\endcsname
+    %
+    % Now the second mark, after the heading break.  No break points
+    % between here and the heading.
+    \global\let\prevsectiondefs=\currentsectiondefs
+    \domark
+    %
+    % Only insert the space after the number if we have a section number.
+    \ifx\temptype\Ynothingkeyword
+      \setbox0 = \hbox{}%
+      \def\toctype{unn}%
+      \gdef\currentsection{#1}%
+    \else\ifx\temptype\Yomitfromtockeyword
+      % for @headings -- no section number, don't include in toc,
+      % and don't redefine \currentsection.
+      \setbox0 = \hbox{}%
+      \def\toctype{omit}%
+      \let\sectionlevel=\empty
+    \else\ifx\temptype\Yappendixkeyword
+      \setbox0 = \hbox{#4\enspace}%
+      \def\toctype{app}%
+      \gdef\currentsection{#1}%
+    \else
+      \setbox0 = \hbox{#4\enspace}%
+      \def\toctype{num}%
+      \gdef\currentsection{#1}%
+    \fi\fi\fi
+    %
+    % Write the toc entry (before \donoderef).  See comments in \chapmacro.
+    \writetocentry{\toctype\sectionlevel}{#1}{#4}%
+    %
+    % Write the node reference (= pdf destination for pdftex).
+    % Again, see comments in \chapmacro.
+    \donoderef{#3}%
+    %
+    % Interline glue will be inserted when the vbox is completed.
+    % That glue will be a valid breakpoint for the page, since it'll be
+    % preceded by a whatsit (usually from the \donoderef, or from the
+    % \writetocentry if there was no node).  We don't want to allow that
+    % break, since then the whatsits could end up on page n while the
+    % section is on page n+1, thus toc/etc. are wrong.  Debian bug 276000.
+    \nobreak
+    %
+    % Output the actual section heading.
+    \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \ptexraggedright
+          \hangindent=\wd0  % zero if no section number
+          \unhbox0 #1}%
+  }%
+  % Add extra space after the heading -- half of whatever came above it.
+  % Don't allow stretch, though.
+  \kern .5 \csname #2headingskip\endcsname
+  %
+  % Do not let the kern be a potential breakpoint, as it would be if it
+  % was followed by glue.
+  \nobreak
+  %
+  % We'll almost certainly start a paragraph next, so don't let that
+  % glue accumulate.  (Not a breakpoint because it's preceded by a
+  % discardable item.)  However, when a paragraph is not started next
+  % (\startdefun, \cartouche, \center, etc.), this needs to be wiped out
+  % or the negative glue will cause weirdly wrong output, typically
+  % obscuring the section heading with something else.
+  \vskip-\parskip
+  %
+  % This is so the last item on the main vertical list is a known
+  % \penalty > 10000, so \startdefun, etc., can recognize the situation
+  % and do the needful.
+  \penalty 10001
+}
+
+
+\message{toc,}
+% Table of contents.
+\newwrite\tocfile
+
+% Write an entry to the toc file, opening it if necessary.
+% Called from @chapter, etc.
+%
+% Example usage: \writetocentry{sec}{Section Name}{\the\chapno.\the\secno}
+% We append the current node name (if any) and page number as additional
+% arguments for the \{chap,sec,...}entry macros which will eventually
+% read this.  The node name is used in the pdf outlines as the
+% destination to jump to.
+%
+% We open the .toc file for writing here instead of at @setfilename (or
+% any other fixed time) so that @contents can be anywhere in the document.
+% But if #1 is `omit', then we don't do anything.  This is used for the
+% table of contents chapter openings themselves.
+%
+\newif\iftocfileopened
+\def\omitkeyword{omit}%
+%
+\def\writetocentry#1#2#3{%
+  \edef\writetoctype{#1}%
+  \ifx\writetoctype\omitkeyword \else
+    \iftocfileopened\else
+      \immediate\openout\tocfile = \jobname.toc
+      \global\tocfileopenedtrue
+    \fi
+    %
+    \iflinks
+      {\atdummies
+       \edef\temp{%
+         \write\tocfile{@#1entry{#2}{#3}{\lastnode}{\noexpand\folio}}}%
+       \temp
+      }%
+    \fi
+  \fi
+  %
+  % Tell \shipout to create a pdf destination on each page, if we're
+  % writing pdf.  These are used in the table of contents.  We can't
+  % just write one on every page because the title pages are numbered
+  % 1 and 2 (the page numbers aren't printed), and so are the first
+  % two pages of the document.  Thus, we'd have two destinations named
+  % `1', and two named `2'.
+  \ifpdforxetex
+    \global\pdfmakepagedesttrue
+  \fi
+}
+
+
+% These characters do not print properly in the Computer Modern roman
+% fonts, so we must take special care.  This is more or less redundant
+% with the Texinfo input format setup at the end of this file.
+%
+\def\activecatcodes{%
+  \catcode`\"=\active
+  \catcode`\$=\active
+  \catcode`\<=\active
+  \catcode`\>=\active
+  \catcode`\\=\active
+  \catcode`\^=\active
+  \catcode`\_=\active
+  \catcode`\|=\active
+  \catcode`\~=\active
+}
+
+
+% Read the toc file, which is essentially Texinfo input.
+\def\readtocfile{%
+  \setupdatafile
+  \activecatcodes
+  \input \tocreadfilename
+}
+
+\newskip\contentsrightmargin \contentsrightmargin=1in
+\newcount\savepageno
+\newcount\lastnegativepageno \lastnegativepageno = -1
+
+% Prepare to read what we've written to \tocfile.
+%
+\def\startcontents#1{%
+  % If @setchapternewpage on, and @headings double, the contents should
+  % start on an odd page, unlike chapters.
+  \contentsalignmacro
+  \immediate\closeout\tocfile
+  %
+  % Don't need to put `Contents' or `Short Contents' in the headline.
+  % It is abundantly clear what they are.
+  \chapmacro{#1}{Yomitfromtoc}{}%
+  %
+  \savepageno = \pageno
+  \begingroup                  % Set up to handle contents files properly.
+    \raggedbottom              % Worry more about breakpoints than the bottom.
+    \entryrightmargin=\contentsrightmargin % Don't use the full line length.
+    %
+    % Roman numerals for page numbers.
+    \ifnum \pageno>0 \global\pageno = \lastnegativepageno \fi
+    \def\thistitle{}% no title in double-sided headings
+    % Record where the Roman numerals started.
+    \ifnum\romancount=0 \global\romancount=\pagecount \fi
+}
+
+% redefined for the two-volume lispref.  We always output on
+% \jobname.toc even if this is redefined.
+%
+\def\tocreadfilename{\jobname.toc}
+
+% Normal (long) toc.
+%
+\def\contents{%
+  \startcontents{\putwordTOC}%
+    \openin 1 \tocreadfilename\space
+    \ifeof 1 \else
+      \readtocfile
+    \fi
+    \vfill \eject
+    \contentsalignmacro % in case @setchapternewpage odd is in effect
+    \ifeof 1 \else
+      \pdfmakeoutlines
+    \fi
+    \closein 1
+  \endgroup
+  \contentsendroman
+}
+
+% And just the chapters.
+\def\summarycontents{%
+  \startcontents{\putwordShortTOC}%
+    %
+    \let\partentry = \shortpartentry
+    \let\numchapentry = \shortchapentry
+    \let\appentry = \shortchapentry
+    \let\unnchapentry = \shortunnchapentry
+    % We want a true roman here for the page numbers.
+    \secfonts
+    \let\rm=\shortcontrm \let\bf=\shortcontbf
+    \let\sl=\shortcontsl \let\tt=\shortconttt
+    \rm
+    \hyphenpenalty = 10000
+    \advance\baselineskip by 1pt % Open it up a little.
+    \def\numsecentry##1##2##3##4{}
+    \let\appsecentry = \numsecentry
+    \let\unnsecentry = \numsecentry
+    \let\numsubsecentry = \numsecentry
+    \let\appsubsecentry = \numsecentry
+    \let\unnsubsecentry = \numsecentry
+    \let\numsubsubsecentry = \numsecentry
+    \let\appsubsubsecentry = \numsecentry
+    \let\unnsubsubsecentry = \numsecentry
+    \openin 1 \tocreadfilename\space
+    \ifeof 1 \else
+      \readtocfile
+    \fi
+    \closein 1
+    \vfill \eject
+    \contentsalignmacro % in case @setchapternewpage odd is in effect
+  \endgroup
+  \contentsendroman
+}
+\let\shortcontents = \summarycontents
+
+% Get ready to use Arabic numerals again
+\def\contentsendroman{%
+  \lastnegativepageno = \pageno
+  \global\pageno = \savepageno
+  %
+  % If \romancount > \arabiccount, the contents are at the end of the
+  % document.  Otherwise, advance where the Arabic numerals start for
+  % the page numbers.
+  \ifnum\romancount>\arabiccount\else\global\arabiccount=\pagecount\fi
+}
+
+% Typeset the label for a chapter or appendix for the short contents.
+% The arg is, e.g., `A' for an appendix, or `3' for a chapter.
+%
+\def\shortchaplabel#1{%
+  % This space should be enough, since a single number is .5em, and the
+  % widest letter (M) is 1em, at least in the Computer Modern fonts.
+  % But use \hss just in case.
+  % (This space doesn't include the extra space that gets added after
+  % the label; that gets put in by \shortchapentry above.)
+  %
+  % We'd like to right-justify chapter numbers, but that looks strange
+  % with appendix letters.  And right-justifying numbers and
+  % left-justifying letters looks strange when there is less than 10
+  % chapters.  Have to read the whole toc once to know how many chapters
+  % there are before deciding ...
+  \hbox to 1em{#1\hss}%
+}
+
+% These macros generate individual entries in the table of contents.
+% The first argument is the chapter or section name.
+% The last argument is the page number.
+% The arguments in between are the chapter number, section number, ...
+
+% Parts, in the main contents.  Replace the part number, which doesn't
+% exist, with an empty box.  Let's hope all the numbers have the same width.
+% Also ignore the page number, which is conventionally not printed.
+\def\numeralbox{\setbox0=\hbox{8}\hbox to \wd0{\hfil}}
+\def\partentry#1#2#3#4{%
+  % Add stretch and a bonus for breaking the page before the part heading.
+  % This reduces the chance of the page being broken immediately after the
+  % part heading, before a following chapter heading.
+  \vskip 0pt plus 5\baselineskip
+  \penalty-300
+  \vskip 0pt plus -5\baselineskip
+  \dochapentry{\numeralbox\labelspace#1}{}%
+}
+%
+% Parts, in the short toc.
+\def\shortpartentry#1#2#3#4{%
+  \penalty-300
+  \vskip.5\baselineskip plus.15\baselineskip minus.1\baselineskip
+  \shortchapentry{{\bf #1}}{\numeralbox}{}{}%
+}
+
+% Chapters, in the main contents.
+\def\numchapentry#1#2#3#4{\dochapentry{#2\labelspace#1}{#4}}
+
+% Chapters, in the short toc.
+% See comments in \dochapentry re vbox and related settings.
+\def\shortchapentry#1#2#3#4{%
+  \tocentry{\shortchaplabel{#2}\labelspace #1}{\doshortpageno\bgroup#4\egroup}%
+}
+
+% Appendices, in the main contents.
+% Need the word Appendix, and a fixed-size box.
+%
+\def\appendixbox#1{%
+  % We use M since it's probably the widest letter.
+  \setbox0 = \hbox{\putwordAppendix{} M}%
+  \hbox to \wd0{\putwordAppendix{} #1\hss}}
+%
+\def\appentry#1#2#3#4{\dochapentry{\appendixbox{#2}\hskip.7em#1}{#4}}
+
+% Unnumbered chapters.
+\def\unnchapentry#1#2#3#4{\dochapentry{#1}{#4}}
+\def\shortunnchapentry#1#2#3#4{\tocentry{#1}{\doshortpageno\bgroup#4\egroup}}
+
+% Sections.
+\def\numsecentry#1#2#3#4{\dosecentry{#2\labelspace#1}{#4}}
+\let\appsecentry=\numsecentry
+\def\unnsecentry#1#2#3#4{\dosecentry{#1}{#4}}
+
+% Subsections.
+\def\numsubsecentry#1#2#3#4{\dosubsecentry{#2\labelspace#1}{#4}}
+\let\appsubsecentry=\numsubsecentry
+\def\unnsubsecentry#1#2#3#4{\dosubsecentry{#1}{#4}}
+
+% And subsubsections.
+\def\numsubsubsecentry#1#2#3#4{\dosubsubsecentry{#2\labelspace#1}{#4}}
+\let\appsubsubsecentry=\numsubsubsecentry
+\def\unnsubsubsecentry#1#2#3#4{\dosubsubsecentry{#1}{#4}}
+
+% This parameter controls the indentation of the various levels.
+% Same as \defaultparindent.
+\newdimen\tocindent \tocindent = 15pt
+
+% Now for the actual typesetting. In all these, #1 is the text and #2 is the
+% page number.
+%
+% If the toc has to be broken over pages, we want it to be at chapters
+% if at all possible; hence the \penalty.
+\def\dochapentry#1#2{%
+   \penalty-300 \vskip1\baselineskip plus.33\baselineskip minus.25\baselineskip
+   \begingroup
+     % Move the page numbers slightly to the right
+     \advance\entryrightmargin by -0.05em
+     \chapentryfonts
+     \tocentry{#1}{\dopageno\bgroup#2\egroup}%
+   \endgroup
+   \nobreak\vskip .25\baselineskip plus.1\baselineskip
+}
+
+\def\dosecentry#1#2{\begingroup
+  \secentryfonts \leftskip=\tocindent
+  \tocentry{#1}{\dopageno\bgroup#2\egroup}%
+\endgroup}
+
+\def\dosubsecentry#1#2{\begingroup
+  \subsecentryfonts \leftskip=2\tocindent
+  \tocentry{#1}{\dopageno\bgroup#2\egroup}%
+\endgroup}
+
+\def\dosubsubsecentry#1#2{\begingroup
+  \subsubsecentryfonts \leftskip=3\tocindent
+  \tocentry{#1}{\dopageno\bgroup#2\egroup}%
+\endgroup}
+
+% We use the same \entry macro as for the index entries.
+\let\tocentry = \entry
+
+% Space between chapter (or whatever) number and the title.
+\def\labelspace{\hskip1em \relax}
+
+\def\dopageno#1{{\rm #1}}
+\def\doshortpageno#1{{\rm #1}}
+
+\def\chapentryfonts{\secfonts \rm}
+\def\secentryfonts{\textfonts}
+\def\subsecentryfonts{\textfonts}
+\def\subsubsecentryfonts{\textfonts}
+
+
+\message{environments,}
+% @foo ... @end foo.
+
+% @tex ... @end tex    escapes into raw TeX temporarily.
+% One exception: @ is still an escape character, so that @end tex works.
+% But \@ or @@ will get a plain @ character.
+
+\envdef\tex{%
+  \setregularquotes
+  \catcode `\\=0 \catcode `\{=1 \catcode `\}=2
+  \catcode `\$=3 \catcode `\&=4 \catcode `\#=6
+  \catcode `\^=7 \catcode `\_=8 \catcode `\~=\active \let~=\tie
+  \catcode `\%=14
+  \catcode `\+=\other
+  \catcode `\"=\other
+  \catcode `\|=\other
+  \catcode `\<=\other
+  \catcode `\>=\other
+  \catcode `\`=\other
+  \catcode `\'=\other
+  %
+  % ' is active in math mode (mathcode"8000).  So reset it, and all our
+  % other math active characters (just in case), to plain's definitions.
+  \mathactive
+  %
+  % Inverse of the list at the beginning of the file.
+  \let\b=\ptexb
+  \let\bullet=\ptexbullet
+  \let\c=\ptexc
+  \let\,=\ptexcomma
+  \let\.=\ptexdot
+  \let\dots=\ptexdots
+  \let\equiv=\ptexequiv
+  \let\!=\ptexexclam
+  \let\i=\ptexi
+  \let\indent=\ptexindent
+  \let\noindent=\ptexnoindent
+  \let\{=\ptexlbrace
+  \let\+=\tabalign
+  \let\}=\ptexrbrace
+  \let\/=\ptexslash
+  \let\sp=\ptexsp
+  \let\*=\ptexstar
+  %\let\sup=\ptexsup % do not redefine, we want @sup to work in math mode
+  \let\t=\ptext
+  \expandafter \let\csname top\endcsname=\ptextop  % we've made it outer
+  \let\frenchspacing=\plainfrenchspacing
+  %
+  \def\endldots{\mathinner{\ldots\ldots\ldots\ldots}}%
+  \def\enddots{\relax\ifmmode\endldots\else$\mathsurround=0pt \endldots\,$\fi}%
+  \def\@{@}%
+}
+% There is no need to define \Etex.
+
+% Define @lisp ... @end lisp.
+% @lisp environment forms a group so it can rebind things,
+% including the definition of @end lisp (which normally is erroneous).
+
+% Amount to narrow the margins by for @lisp.
+\newskip\lispnarrowing \lispnarrowing=0.4in
+
+% This is the definition that ^^M gets inside @lisp, @example, and other
+% such environments.  \null is better than a space, since it doesn't
+% have any width.
+\def\lisppar{\null\endgraf}
+
+% This space is always present above and below environments.
+\newskip\envskipamount \envskipamount = 0pt
+
+% Make spacing and below environment symmetrical.  We use \parskip here
+% to help in doing that, since in @example-like environments \parskip
+% is reset to zero; thus the \afterenvbreak inserts no space -- but the
+% start of the next paragraph will insert \parskip.
+%
+\def\aboveenvbreak{{%
+  % =10000 instead of <10000 because of a special case in \itemzzz and
+  % \sectionheading, q.v.
+  \ifnum \lastpenalty=10000 \else
+    \advance\envskipamount by \parskip
+    \endgraf
+    \ifdim\lastskip<\envskipamount
+      \removelastskip
+      \ifnum\lastpenalty<10000
+        % Penalize breaking before the environment, because preceding text
+        % often leads into it.
+        \penalty100
+      \fi
+      \vskip\envskipamount
+    \fi
+  \fi
+}}
+
+\def\afterenvbreak{{%
+  % =10000 instead of <10000 because of a special case in \itemzzz and
+  % \sectionheading, q.v.
+  \ifnum \lastpenalty=10000 \else
+    \advance\envskipamount by \parskip
+    \endgraf
+    \ifdim\lastskip<\envskipamount
+      \removelastskip
+      % it's not a good place to break if the last penalty was \nobreak
+      % or better ...
+      \ifnum\lastpenalty<10000 \penalty-50 \fi
+      \vskip\envskipamount
+    \fi
+  \fi
+}}
+
+% \nonarrowing is a flag.  If "set", @lisp etc don't narrow margins; it will
+% also clear it, so that its embedded environments do the narrowing again.
+\let\nonarrowing=\relax
+
+% @cartouche ... @end cartouche: draw rectangle w/rounded corners around
+% environment contents.
+
+%
+\def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth
+\def\ctr{{\hskip 6pt\circle\char'010}}
+\def\cbl{{\circle\char'012\hskip -6pt}}
+\def\cbr{{\hskip 6pt\circle\char'011}}
+\def\carttop{\hbox to \cartouter{\hskip\lskip
+        \ctl\leaders\hrule height\circthick\hfil\ctr
+        \hskip\rskip}}
+\def\cartbot{\hbox to \cartouter{\hskip\lskip
+        \cbl\leaders\hrule height\circthick\hfil\cbr
+        \hskip\rskip}}
+%
+\newskip\lskip\newskip\rskip
+
+% only require the font if @cartouche is actually used
+\def\cartouchefontdefs{%
+  \font\circle=lcircle10\relax
+  \circthick=\fontdimen8\circle
+}
+\newdimen\circthick
+\newdimen\cartouter\newdimen\cartinner
+\newskip\normbskip\newskip\normpskip\newskip\normlskip
+
+
+\envdef\cartouche{%
+  \cartouchefontdefs
+  \ifhmode\par\fi  % can't be in the midst of a paragraph.
+  \startsavinginserts
+  \lskip=\leftskip \rskip=\rightskip
+  \leftskip=0pt\rightskip=0pt % we want these *outside*.
+  \cartinner=\hsize \advance\cartinner by-\lskip
+  \advance\cartinner by-\rskip
+  \cartouter=\hsize
+  \advance\cartouter by 18.4pt	% allow for 3pt kerns on either
+				% side, and for 6pt waste from
+				% each corner char, and rule thickness
+  \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
+  %
+  % If this cartouche directly follows a sectioning command, we need the
+  % \parskip glue (backspaced over by default) or the cartouche can
+  % collide with the section heading.
+  \ifnum\lastpenalty>10000 \vskip\parskip \penalty\lastpenalty \fi
+  %
+  \setbox\groupbox=\vbox\bgroup
+      \baselineskip=0pt\parskip=0pt\lineskip=0pt
+      \carttop
+      \hbox\bgroup
+	  \hskip\lskip
+	  \vrule\kern3pt
+	  \vbox\bgroup
+	      \kern3pt
+	      \hsize=\cartinner
+	      \baselineskip=\normbskip
+	      \lineskip=\normlskip
+	      \parskip=\normpskip
+	      \vskip -\parskip
+	      \comment % For explanation, see the end of def\group.
+}
+\def\Ecartouche{%
+              \ifhmode\par\fi
+	      \kern3pt
+	  \egroup
+	  \kern3pt\vrule
+	  \hskip\rskip
+      \egroup
+      \cartbot
+  \egroup
+  \addgroupbox
+  \checkinserts
+}
+
+
+% This macro is called at the beginning of all the @example variants,
+% inside a group.
+\newdimen\nonfillparindent
+\def\nonfillstart{%
+  \aboveenvbreak
+  \ifdim\hfuzz < 12pt \hfuzz = 12pt \fi % Don't be fussy
+  \sepspaces % Make spaces be word-separators rather than space tokens.
+  \let\par = \lisppar % don't ignore blank lines
+  \obeylines % each line of input is a line of output
+  \parskip = 0pt
+  % Turn off paragraph indentation but redefine \indent to emulate
+  % the normal \indent.
+  \nonfillparindent=\parindent
+  \parindent = 0pt
+  \let\indent\nonfillindent
+  %
+  \emergencystretch = 0pt % don't try to avoid overfull boxes
+  \ifx\nonarrowing\relax
+    \advance \leftskip by \lispnarrowing
+    \exdentamount=\lispnarrowing
+  \else
+    \let\nonarrowing = \relax
+  \fi
+  \let\exdent=\nofillexdent
+}
+
+\begingroup
+\obeyspaces
+% We want to swallow spaces (but not other tokens) after the fake
+% @indent in our nonfill-environments, where spaces are normally
+% active and set to @tie, resulting in them not being ignored after
+% @indent.
+\gdef\nonfillindent{\futurelet\temp\nonfillindentcheck}%
+\gdef\nonfillindentcheck{%
+\ifx\temp %
+\expandafter\nonfillindentgobble%
+\else%
+\leavevmode\nonfillindentbox%
+\fi%
+}%
+\endgroup
+\def\nonfillindentgobble#1{\nonfillindent}
+\def\nonfillindentbox{\hbox to \nonfillparindent{\hss}}
+
+% If you want all examples etc. small: @set dispenvsize small.
+% If you want even small examples the full size: @set dispenvsize nosmall.
+% This affects the following displayed environments:
+%    @example, @display, @format, @lisp, @verbatim
+%
+\def\smallword{small}
+\def\nosmallword{nosmall}
+\let\SETdispenvsize\relax
+\def\setnormaldispenv{%
+  \ifx\SETdispenvsize\smallword
+    % end paragraph for sake of leading, in case document has no blank
+    % line.  This is redundant with what happens in \aboveenvbreak, but
+    % we need to do it before changing the fonts, and it's inconvenient
+    % to change the fonts afterward.
+    \ifnum \lastpenalty=10000 \else \endgraf \fi
+    \smallexamplefonts \rm
+  \fi
+}
+\def\setsmalldispenv{%
+  \ifx\SETdispenvsize\nosmallword
+  \else
+    \ifnum \lastpenalty=10000 \else \endgraf \fi
+    \smallexamplefonts \rm
+  \fi
+}
+
+% We often define two environments, @foo and @smallfoo.
+% Let's do it in one command.  #1 is the env name, #2 the definition.
+\def\makedispenvdef#1#2{%
+  \expandafter\envdef\csname#1\endcsname {\setnormaldispenv #2}%
+  \expandafter\envdef\csname small#1\endcsname {\setsmalldispenv #2}%
+  \expandafter\let\csname E#1\endcsname \afterenvbreak
+  \expandafter\let\csname Esmall#1\endcsname \afterenvbreak
+}
+
+% Define two environment synonyms (#1 and #2) for an environment.
+\def\maketwodispenvdef#1#2#3{%
+  \makedispenvdef{#1}{#3}%
+  \makedispenvdef{#2}{#3}%
+}
+%
+% @lisp: indented, narrowed, typewriter font;
+% @example: same as @lisp.
+%
+% @smallexample and @smalllisp: use smaller fonts.
+% Originally contributed by Pavel@xerox.
+%
+\maketwodispenvdef{lisp}{example}{%
+  \nonfillstart
+  \tt\setcodequotes
+  \let\kbdfont = \kbdexamplefont % Allow @kbd to do something special.
+  \parsearg\gobble
+}
+% @display/@smalldisplay: same as @lisp except keep current font.
+%
+\makedispenvdef{display}{%
+  \nonfillstart
+  \gobble
+}
+
+% @format/@smallformat: same as @display except don't narrow margins.
+%
+\makedispenvdef{format}{%
+  \let\nonarrowing = t%
+  \nonfillstart
+  \gobble
+}
+
+% @flushleft: same as @format, but doesn't obey \SETdispenvsize.
+\envdef\flushleft{%
+  \let\nonarrowing = t%
+  \nonfillstart
+  \gobble
+}
+\let\Eflushleft = \afterenvbreak
+
+% @flushright.
+%
+\envdef\flushright{%
+  \let\nonarrowing = t%
+  \nonfillstart
+  \advance\leftskip by 0pt plus 1fill\relax
+  \gobble
+}
+\let\Eflushright = \afterenvbreak
+
+
+% @raggedright does more-or-less normal line breaking but no right
+% justification.  From plain.tex.
+\envdef\raggedright{%
+  \rightskip0pt plus2.4em \spaceskip.3333em \xspaceskip.5em\relax
+}
+\let\Eraggedright\par
+
+\envdef\raggedleft{%
+  \parindent=0pt \leftskip0pt plus2em
+  \spaceskip.3333em \xspaceskip.5em \parfillskip=0pt
+  \hbadness=10000 % Last line will usually be underfull, so turn off
+                  % badness reporting.
+}
+\let\Eraggedleft\par
+
+\envdef\raggedcenter{%
+  \parindent=0pt \rightskip0pt plus1em \leftskip0pt plus1em
+  \spaceskip.3333em \xspaceskip.5em \parfillskip=0pt
+  \hbadness=10000 % Last line will usually be underfull, so turn off
+                  % badness reporting.
+}
+\let\Eraggedcenter\par
+
+
+% @quotation does normal linebreaking (hence we can't use \nonfillstart)
+% and narrows the margins.  We keep \parskip nonzero in general, since
+% we're doing normal filling.  So, when using \aboveenvbreak and
+% \afterenvbreak, temporarily make \parskip 0.
+%
+\makedispenvdef{quotation}{\quotationstart}
+%
+\def\quotationstart{%
+  \indentedblockstart % same as \indentedblock, but increase right margin too.
+  \ifx\nonarrowing\relax
+    \advance\rightskip by \lispnarrowing
+  \fi
+  \parsearg\quotationlabel
+}
+
+% We have retained a nonzero parskip for the environment, since we're
+% doing normal filling.
+%
+\def\Equotation{%
+  \par
+  \ifx\quotationauthor\thisisundefined\else
+    % indent a bit.
+    \leftline{\kern 2\leftskip \sl ---\quotationauthor}%
+  \fi
+  {\parskip=0pt \afterenvbreak}%
+}
+\def\Esmallquotation{\Equotation}
+
+% If we're given an argument, typeset it in bold with a colon after.
+\def\quotationlabel#1{%
+  \def\temp{#1}%
+  \ifx\temp\empty \else
+    {\bf #1: }%
+  \fi
+}
+
+% @indentedblock is like @quotation, but indents only on the left and
+% has no optional argument.
+%
+\makedispenvdef{indentedblock}{\indentedblockstart}
+%
+\def\indentedblockstart{%
+  {\parskip=0pt \aboveenvbreak}% because \aboveenvbreak inserts \parskip
+  \parindent=0pt
+  %
+  % @cartouche defines \nonarrowing to inhibit narrowing at next level down.
+  \ifx\nonarrowing\relax
+    \advance\leftskip by \lispnarrowing
+    \exdentamount = \lispnarrowing
+  \else
+    \let\nonarrowing = \relax
+  \fi
+}
+
+% Keep a nonzero parskip for the environment, since we're doing normal filling.
+%
+\def\Eindentedblock{%
+  \par
+  {\parskip=0pt \afterenvbreak}%
+}
+\def\Esmallindentedblock{\Eindentedblock}
+
+
+% LaTeX-like @verbatim...@end verbatim and @verb{<char>...<char>}
+% If we want to allow any <char> as delimiter,
+% we need the curly braces so that makeinfo sees the @verb command, eg:
+% `@verbx...x' would look like the '@verbx' command.  --janneke@gnu.org
+%
+% [Knuth]: Donald Ervin Knuth, 1996.  The TeXbook.
+%
+% [Knuth] p.344; only we need to do the other characters Texinfo sets
+% active too.  Otherwise, they get lost as the first character on a
+% verbatim line.
+\def\dospecials{%
+  \do\ \do\\\do\{\do\}\do\$\do\&%
+  \do\#\do\^\do\^^K\do\_\do\^^A\do\%\do\~%
+  \do\<\do\>\do\|\do\@\do+\do\"%
+  % Don't do the quotes -- if we do, @set txicodequoteundirected and
+  % @set txicodequotebacktick will not have effect on @verb and
+  % @verbatim, and ?` and !` ligatures won't get disabled.
+  %\do\`\do\'%
+}
+%
+% [Knuth] p. 380
+\def\uncatcodespecials{%
+  \def\do##1{\catcode`##1=\other}\dospecials}
+%
+% Setup for the @verb command.
+%
+% Eight spaces for a tab
+\begingroup
+  \catcode`\^^I=\active
+  \gdef\tabeightspaces{\catcode`\^^I=\active\def^^I{\ \ \ \ \ \ \ \ }}
+\endgroup
+%
+\def\setupverb{%
+  \tt  % easiest (and conventionally used) font for verbatim
+  \def\par{\leavevmode\endgraf}%
+  \setcodequotes
+  \tabeightspaces
+  % Respect line breaks,
+  % print special symbols as themselves, and
+  % make each space count
+  % must do in this order:
+  \obeylines \uncatcodespecials \sepspaces
+}
+
+% Setup for the @verbatim environment
+%
+% Real tab expansion.
+\newdimen\tabw \setbox0=\hbox{\tt\space} \tabw=8\wd0 % tab amount
+%
+% We typeset each line of the verbatim in an \hbox, so we can handle
+% tabs.
+\newbox\verbbox
+\def\starttabbox{\setbox\verbbox=\hbox\bgroup}
+%
+\begingroup
+  \catcode`\^^I=\active
+  \gdef\tabexpand{%
+    \catcode`\^^I=\active
+    \def^^I{\leavevmode\egroup
+      \dimen\verbbox=\wd\verbbox % the width so far, or since the previous tab
+      \divide\dimen\verbbox by\tabw
+      \multiply\dimen\verbbox by\tabw % compute previous multiple of \tabw
+      \advance\dimen\verbbox by\tabw  % advance to next multiple of \tabw
+      \wd\verbbox=\dimen\verbbox
+      \leavevmode\box\verbbox \starttabbox
+    }%
+  }
+\endgroup
+
+% start the verbatim environment.
+\def\setupverbatim{%
+  \let\nonarrowing = t%
+  \nonfillstart
+  \tt % easiest (and conventionally used) font for verbatim
+  \def\par{\egroup\leavevmode\box\verbbox\endgraf\starttabbox}%
+  \tabexpand
+  \setcodequotes
+  % Respect line breaks,
+  % print special symbols as themselves, and
+  % make each space count.
+  % Must do in this order:
+  \obeylines \uncatcodespecials \sepspaces
+}
+
+% Do the @verb magic: verbatim text is quoted by unique
+% delimiter characters.  Before first delimiter expect a
+% right brace, after last delimiter expect closing brace:
+%
+%    \def\doverb'{'<char>#1<char>'}'{#1}
+%
+% [Knuth] p. 382; only eat outer {}
+\begingroup
+  \catcode`[=1\catcode`]=2\catcode`\{=\other\catcode`\}=\other
+  \gdef\doverb{#1[\def\next##1#1}[##1\endgroup]\next]
+\endgroup
+%
+\def\verb{\begingroup\setupverb\doverb}
+%
+%
+% Do the @verbatim magic: define the macro \doverbatim so that
+% the (first) argument ends when '@end verbatim' is reached, ie:
+%
+%     \def\doverbatim#1@end verbatim{#1}
+%
+% For Texinfo it's a lot easier than for LaTeX,
+% because texinfo's \verbatim doesn't stop at '\end{verbatim}':
+% we need not redefine '\', '{' and '}'.
+%
+% Inspired by LaTeX's verbatim command set [latex.ltx]
+%
+\begingroup
+  \catcode`\ =\active
+  \obeylines %
+  % ignore everything up to the first ^^M, that's the newline at the end
+  % of the @verbatim input line itself.  Otherwise we get an extra blank
+  % line in the output.
+  \xdef\doverbatim#1^^M#2@end verbatim{%
+    \starttabbox#2\egroup\noexpand\end\gobble verbatim}%
+  % We really want {...\end verbatim} in the body of the macro, but
+  % without the active space; thus we have to use \xdef and \gobble.
+  % The \egroup ends the \verbbox started at the end of the last line in
+  % the block.
+\endgroup
+%
+\envdef\verbatim{%
+    \setnormaldispenv\setupverbatim\doverbatim
+}
+\let\Everbatim = \afterenvbreak
+
+
+% @verbatiminclude FILE - insert text of file in verbatim environment.
+%
+\def\verbatiminclude{\parseargusing\filenamecatcodes\doverbatiminclude}
+%
+\def\doverbatiminclude#1{%
+  {%
+    \makevalueexpandable
+    \setupverbatim
+    {%
+      \indexnofonts       % Allow `@@' and other weird things in file names.
+      \wlog{texinfo.tex: doing @verbatiminclude of #1^^J}%
+      \edef\tmp{\noexpand\input #1 }
+      \expandafter
+    }\expandafter\starttabbox\tmp\egroup
+    \afterenvbreak
+  }%
+}
+
+% @copying ... @end copying.
+% Save the text away for @insertcopying later.
+%
+% We save the uninterpreted tokens, rather than creating a box.
+% Saving the text in a box would be much easier, but then all the
+% typesetting commands (@smallbook, font changes, etc.) have to be done
+% beforehand -- and a) we want @copying to be done first in the source
+% file; b) letting users define the frontmatter in as flexible order as
+% possible is desirable.
+%
+\def\copying{\checkenv{}\begingroup\scanargctxt\docopying}
+\def\docopying#1@end copying{\endgroup\def\copyingtext{#1}}
+%
+\def\insertcopying{%
+  \begingroup
+    \parindent = 0pt  % paragraph indentation looks wrong on title page
+    \scanexp\copyingtext
+  \endgroup
+}
+
+
+\message{defuns,}
+% @defun etc.
+
+\newskip\defbodyindent \defbodyindent=.4in
+\newskip\defargsindent \defargsindent=50pt
+\newskip\deflastargmargin \deflastargmargin=18pt
+\newcount\defunpenalty
+
+% Start the processing of @deffn:
+\def\startdefun{%
+  \ifnum\lastpenalty<10000
+    \medbreak
+    \defunpenalty=10003 % Will keep this @deffn together with the
+                        % following @def command, see below.
+  \else
+    % If there are two @def commands in a row, we'll have a \nobreak,
+    % which is there to keep the function description together with its
+    % header.  But if there's nothing but headers, we need to allow a
+    % break somewhere.  Check specifically for penalty 10002, inserted
+    % by \printdefunline, instead of 10000, since the sectioning
+    % commands also insert a nobreak penalty, and we don't want to allow
+    % a break between a section heading and a defun.
+    %
+    % As a further refinement, we avoid "club" headers by signalling
+    % with penalty of 10003 after the very first @deffn in the
+    % sequence (see above), and penalty of 10002 after any following
+    % @def command.
+    \ifnum\lastpenalty=10002 \penalty2000 \else \defunpenalty=10002 \fi
+    %
+    % Similarly, after a section heading, do not allow a break.
+    % But do insert the glue.
+    \medskip  % preceded by discardable penalty, so not a breakpoint
+  \fi
+  %
+  \parindent=0in
+  \advance\leftskip by \defbodyindent
+  \exdentamount=\defbodyindent
+}
+
+\def\dodefunx#1{%
+  % First, check whether we are in the right environment:
+  \checkenv#1%
+  %
+  % As above, allow line break if we have multiple x headers in a row.
+  % It's not a great place, though.
+  \ifnum\lastpenalty=10002 \penalty3000 \else \defunpenalty=10002 \fi
+  %
+  % And now, it's time to reuse the body of the original defun:
+  \expandafter\gobbledefun#1%
+}
+\def\gobbledefun#1\startdefun{}
+
+% \printdefunline \deffnheader{text}
+%
+\def\printdefunline#1#2{%
+  \begingroup
+    % call \deffnheader:
+    #1#2 \endheader
+    % common ending:
+    \interlinepenalty = 10000
+    \advance\rightskip by 0pt plus 1fil\relax
+    \endgraf
+    \nobreak\vskip -\parskip
+    \penalty\defunpenalty  % signal to \startdefun and \dodefunx
+    % Some of the @defun-type tags do not enable magic parentheses,
+    % rendering the following check redundant.  But we don't optimize.
+    \checkparencounts
+  \endgroup
+}
+
+\def\Edefun{\endgraf\medbreak}
+
+% \makedefun{deffn} creates \deffn, \deffnx and \Edeffn;
+% the only thing remaining is to define \deffnheader.
+%
+\def\makedefun#1{%
+  \expandafter\let\csname E#1\endcsname = \Edefun
+  \edef\temp{\noexpand\domakedefun
+    \makecsname{#1}\makecsname{#1x}\makecsname{#1header}}%
+  \temp
+}
+
+% \domakedefun \deffn \deffnx \deffnheader { (defn. of \deffnheader) }
+%
+% Define \deffn and \deffnx, without parameters.
+% \deffnheader has to be defined explicitly.
+%
+\def\domakedefun#1#2#3{%
+  \envdef#1{%
+    \startdefun
+    \doingtypefnfalse    % distinguish typed functions from all else
+    \parseargusing\activeparens{\printdefunline#3}%
+  }%
+  \def#2{\dodefunx#1}%
+  \def#3%
+}
+
+\newif\ifdoingtypefn       % doing typed function?
+\newif\ifrettypeownline    % typeset return type on its own line?
+
+% @deftypefnnewline on|off says whether the return type of typed functions
+% are printed on their own line.  This affects @deftypefn, @deftypefun,
+% @deftypeop, and @deftypemethod.
+%
+\parseargdef\deftypefnnewline{%
+  \def\temp{#1}%
+  \ifx\temp\onword
+    \expandafter\let\csname SETtxideftypefnnl\endcsname
+      = \empty
+  \else\ifx\temp\offword
+    \expandafter\let\csname SETtxideftypefnnl\endcsname
+      = \relax
+  \else
+    \errhelp = \EMsimple
+    \errmessage{Unknown @txideftypefnnl value `\temp',
+                must be on|off}%
+  \fi\fi
+}
+
+% \dosubind {index}{topic}{subtopic}
+%
+% If SUBTOPIC is present, precede it with a space, and call \doind.
+% (At some time during the 20th century, this made a two-level entry in an
+% index such as the operation index.  Nobody seemed to notice the change in
+% behaviour though.)
+\def\dosubind#1#2#3{%
+  \def\thirdarg{#3}%
+  \ifx\thirdarg\empty
+    \doind{#1}{#2}%
+  \else
+    \doind{#1}{#2\space#3}%
+  \fi
+}
+
+% Untyped functions:
+
+% @deffn category name args
+\makedefun{deffn}{\deffngeneral{}}
+
+% @deffn category class name args
+\makedefun{defop}#1 {\defopon{#1\ \putwordon}}
+
+% \defopon {category on}class name args
+\def\defopon#1#2 {\deffngeneral{\putwordon\ \code{#2}}{#1\ \code{#2}} }
+
+% \deffngeneral {subind}category name args
+%
+\def\deffngeneral#1#2 #3 #4\endheader{%
+  \dosubind{fn}{\code{#3}}{#1}%
+  \defname{#2}{}{#3}\magicamp\defunargs{#4\unskip}%
+}
+
+% Typed functions:
+
+% @deftypefn category type name args
+\makedefun{deftypefn}{\deftypefngeneral{}}
+
+% @deftypeop category class type name args
+\makedefun{deftypeop}#1 {\deftypeopon{#1\ \putwordon}}
+
+% \deftypeopon {category on}class type name args
+\def\deftypeopon#1#2 {\deftypefngeneral{\putwordon\ \code{#2}}{#1\ \code{#2}} }
+
+% \deftypefngeneral {subind}category type name args
+%
+\def\deftypefngeneral#1#2 #3 #4 #5\endheader{%
+  \dosubind{fn}{\code{#4}}{#1}%
+  \doingtypefntrue
+  \defname{#2}{#3}{#4}\defunargs{#5\unskip}%
+}
+
+% Typed variables:
+
+% @deftypevr category type var args
+\makedefun{deftypevr}{\deftypecvgeneral{}}
+
+% @deftypecv category class type var args
+\makedefun{deftypecv}#1 {\deftypecvof{#1\ \putwordof}}
+
+% \deftypecvof {category of}class type var args
+\def\deftypecvof#1#2 {\deftypecvgeneral{\putwordof\ \code{#2}}{#1\ \code{#2}} }
+
+% \deftypecvgeneral {subind}category type var args
+%
+\def\deftypecvgeneral#1#2 #3 #4 #5\endheader{%
+  \dosubind{vr}{\code{#4}}{#1}%
+  \defname{#2}{#3}{#4}\defunargs{#5\unskip}%
+}
+
+% Untyped variables:
+
+% @defvr category var args
+\makedefun{defvr}#1 {\deftypevrheader{#1} {} }
+
+% @defcv category class var args
+\makedefun{defcv}#1 {\defcvof{#1\ \putwordof}}
+
+% \defcvof {category of}class var args
+\def\defcvof#1#2 {\deftypecvof{#1}#2 {} }
+
+% Types:
+
+% @deftp category name args
+\makedefun{deftp}#1 #2 #3\endheader{%
+  \doind{tp}{\code{#2}}%
+  \defname{#1}{}{#2}\defunargs{#3\unskip}%
+}
+
+% Remaining @defun-like shortcuts:
+\makedefun{defun}{\deffnheader{\putwordDeffunc} }
+\makedefun{defmac}{\deffnheader{\putwordDefmac} }
+\makedefun{defspec}{\deffnheader{\putwordDefspec} }
+\makedefun{deftypefun}{\deftypefnheader{\putwordDeffunc} }
+\makedefun{defvar}{\defvrheader{\putwordDefvar} }
+\makedefun{defopt}{\defvrheader{\putwordDefopt} }
+\makedefun{deftypevar}{\deftypevrheader{\putwordDefvar} }
+\makedefun{defmethod}{\defopon\putwordMethodon}
+\makedefun{deftypemethod}{\deftypeopon\putwordMethodon}
+\makedefun{defivar}{\defcvof\putwordInstanceVariableof}
+\makedefun{deftypeivar}{\deftypecvof\putwordInstanceVariableof}
+
+% \defname, which formats the name of the @def (not the args).
+% #1 is the category, such as "Function".
+% #2 is the return type, if any.
+% #3 is the function name.
+%
+% We are followed by (but not passed) the arguments, if any.
+%
+\def\defname#1#2#3{%
+  \par
+  % Get the values of \leftskip and \rightskip as they were outside the @def...
+  \advance\leftskip by -\defbodyindent
+  %
+  % Determine if we are typesetting the return type of a typed function
+  % on a line by itself.
+  \rettypeownlinefalse
+  \ifdoingtypefn  % doing a typed function specifically?
+    % then check user option for putting return type on its own line:
+    \expandafter\ifx\csname SETtxideftypefnnl\endcsname\relax \else
+      \rettypeownlinetrue
+    \fi
+  \fi
+  %
+  % How we'll format the category name.  Putting it in brackets helps
+  % distinguish it from the body text that may end up on the next line
+  % just below it.
+  \def\temp{#1}%
+  \setbox0=\hbox{\kern\deflastargmargin \ifx\temp\empty\else [\rm\temp]\fi}
+  %
+  % Figure out line sizes for the paragraph shape.  We'll always have at
+  % least two.
+  \tempnum = 2
+  %
+  % The first line needs space for \box0; but if \rightskip is nonzero,
+  % we need only space for the part of \box0 which exceeds it:
+  \dimen0=\hsize  \advance\dimen0 by -\wd0  \advance\dimen0 by \rightskip
+  %
+  % If doing a return type on its own line, we'll have another line.
+  \ifrettypeownline
+    \advance\tempnum by 1
+    \def\maybeshapeline{0in \hsize}%
+  \else
+    \def\maybeshapeline{}%
+  \fi
+  %
+  % The continuations:
+  \dimen2=\hsize  \advance\dimen2 by -\defargsindent
+  %
+  % The final paragraph shape:
+  \parshape \tempnum  0in \dimen0  \maybeshapeline  \defargsindent \dimen2
+  %
+  % Put the category name at the right margin.
+  \noindent
+  \hbox to 0pt{%
+    \hfil\box0 \kern-\hsize
+    % \hsize has to be shortened this way:
+    \kern\leftskip
+    % Intentionally do not respect \rightskip, since we need the space.
+  }%
+  %
+  % Allow all lines to be underfull without complaint:
+  \tolerance=10000 \hbadness=10000
+  \exdentamount=\defbodyindent
+  {%
+    % defun fonts. We use typewriter by default (used to be bold) because:
+    % . we're printing identifiers, they should be in tt in principle.
+    % . in languages with many accents, such as Czech or French, it's
+    %   common to leave accents off identifiers.  The result looks ok in
+    %   tt, but exceedingly strange in rm.
+    % . we don't want -- and --- to be treated as ligatures.
+    % . this still does not fix the ?` and !` ligatures, but so far no
+    %   one has made identifiers using them :).
+    \df \tt
+    \def\temp{#2}% text of the return type
+    \ifx\temp\empty\else
+      \tclose{\temp}% typeset the return type
+      \ifrettypeownline
+        % put return type on its own line; prohibit line break following:
+        \hfil\vadjust{\nobreak}\break
+      \else
+        \space  % type on same line, so just followed by a space
+      \fi
+    \fi           % no return type
+    #3% output function name
+  }%
+  {\rm\enskip}% hskip 0.5 em of \rmfont
+  %
+  \boldbrax
+  % arguments will be output next, if any.
+}
+
+% Print arguments in slanted roman (not ttsl), inconsistently with using
+% tt for the name.  This is because literal text is sometimes needed in
+% the argument list (groff manual), and ttsl and tt are not very
+% distinguishable.  Prevent hyphenation at `-' chars.
+%
+\def\defunargs#1{%
+  % use sl by default (not ttsl),
+  % tt for the names.
+  \df \sl \hyphenchar\font=0
+  %
+  % On the other hand, if an argument has two dashes (for instance), we
+  % want a way to get ttsl.  We used to recommend @var for that, so
+  % leave the code in, but it's strange for @var to lead to typewriter.
+  % Nowadays we recommend @code, since the difference between a ttsl hyphen
+  % and a tt hyphen is pretty tiny.  @code also disables ?` !`.
+  \def\var##1{{\setregularquotes\ttslanted{##1}}}%
+  #1%
+  \sl\hyphenchar\font=45
+}
+
+% We want ()&[] to print specially on the defun line.
+%
+\def\activeparens{%
+  \catcode`\(=\active \catcode`\)=\active
+  \catcode`\[=\active \catcode`\]=\active
+  \catcode`\&=\active
+}
+
+% Make control sequences which act like normal parenthesis chars.
+\let\lparen = ( \let\rparen = )
+
+% Be sure that we always have a definition for `(', etc.  For example,
+% if the fn name has parens in it, \boldbrax will not be in effect yet,
+% so TeX would otherwise complain about undefined control sequence.
+{
+  \activeparens
+  \global\let(=\lparen \global\let)=\rparen
+  \global\let[=\lbrack \global\let]=\rbrack
+  \global\let& = \&
+
+  \gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
+  \gdef\magicamp{\let&=\amprm}
+}
+\let\ampchar\&
+
+\newcount\parencount
+
+% If we encounter &foo, then turn on ()-hacking afterwards
+\newif\ifampseen
+\def\amprm#1 {\ampseentrue{\bf\&#1 }}
+
+\def\parenfont{%
+  \ifampseen
+    % At the first level, print parens in roman,
+    % otherwise use the default font.
+    \ifnum \parencount=1 \rm \fi
+  \else
+    % The \sf parens (in \boldbrax) actually are a little bolder than
+    % the contained text.  This is especially needed for [ and ] .
+    \sf
+  \fi
+}
+\def\infirstlevel#1{%
+  \ifampseen
+    \ifnum\parencount=1
+      #1%
+    \fi
+  \fi
+}
+\def\bfafterword#1 {#1 \bf}
+
+\def\opnr{%
+  \global\advance\parencount by 1
+  {\parenfont(}%
+  \infirstlevel \bfafterword
+}
+\def\clnr{%
+  {\parenfont)}%
+  \infirstlevel \sl
+  \global\advance\parencount by -1
+}
+
+\newcount\brackcount
+\def\lbrb{%
+  \global\advance\brackcount by 1
+  {\bf[}%
+}
+\def\rbrb{%
+  {\bf]}%
+  \global\advance\brackcount by -1
+}
+
+\def\checkparencounts{%
+  \ifnum\parencount=0 \else \badparencount \fi
+  \ifnum\brackcount=0 \else \badbrackcount \fi
+}
+% these should not use \errmessage; the glibc manual, at least, actually
+% has such constructs (when documenting function pointers).
+\def\badparencount{%
+  \message{Warning: unbalanced parentheses in @def...}%
+  \global\parencount=0
+}
+\def\badbrackcount{%
+  \message{Warning: unbalanced square brackets in @def...}%
+  \global\brackcount=0
+}
+
+
+\message{macros,}
+% @macro.
+
+% To do this right we need a feature of e-TeX, \scantokens,
+% which we arrange to emulate with a temporary file in ordinary TeX.
+\ifx\eTeXversion\thisisundefined
+  \newwrite\macscribble
+  \def\scantokens#1{%
+    \toks0={#1}%
+    \immediate\openout\macscribble=\jobname.tmp
+    \immediate\write\macscribble{\the\toks0}%
+    \immediate\closeout\macscribble
+    \input \jobname.tmp
+  }
+\fi
+
+\let\E=\expandafter
+
+% Used at the time of macro expansion.
+% Argument is macro body with arguments substituted
+\def\scanmacro#1{%
+  \newlinechar`\^^M
+  % expand the expansion of \eatleadingcr twice to maybe remove a leading
+  % newline (and \else and \fi tokens), then call \eatspaces on the result.
+  \def\xeatspaces##1{%
+    \E\E\E\E\E\E\E\eatspaces\E\E\E\E\E\E\E{\eatleadingcr##1%
+  }}%
+  \def\xempty##1{}%
+  %
+  % Process the macro body under the current catcode regime.
+  \scantokens{#1@comment}%
+  %
+  % The \comment is to remove the \newlinechar added by \scantokens, and
+  % can be noticed by \parsearg.  Note \c isn't used because this means cedilla
+  % in math mode.
+}
+
+% Used for copying and captions
+\def\scanexp#1{%
+  \expandafter\scanmacro\expandafter{#1}%
+}
+
+\newcount\paramno   % Count of parameters
+\newtoks\macname    % Macro name
+\newif\ifrecursive  % Is it recursive?
+
+% List of all defined macros in the form
+%    \commondummyword\macro1\commondummyword\macro2...
+% Currently is also contains all @aliases; the list can be split
+% if there is a need.
+\def\macrolist{}
+
+% Add the macro to \macrolist
+\def\addtomacrolist#1{\expandafter \addtomacrolistxxx \csname#1\endcsname}
+\def\addtomacrolistxxx#1{%
+     \toks0 = \expandafter{\macrolist\commondummyword#1}%
+     \xdef\macrolist{\the\toks0}%
+}
+
+% Utility routines.
+% This does \let #1 = #2, with \csnames; that is,
+%   \let \csname#1\endcsname = \csname#2\endcsname
+% (except of course we have to play expansion games).
+%
+\def\cslet#1#2{%
+  \expandafter\let
+  \csname#1\expandafter\endcsname
+  \csname#2\endcsname
+}
+
+% Trim leading and trailing spaces off a string.
+% Concepts from aro-bend problem 15 (see CTAN).
+{\catcode`\@=11
+\gdef\eatspaces #1{\expandafter\trim@\expandafter{#1 }}
+\gdef\trim@ #1{\trim@@ @#1 @ #1 @ @@}
+\gdef\trim@@ #1@ #2@ #3@@{\trim@@@\empty #2 @}
+\def\unbrace#1{#1}
+\unbrace{\gdef\trim@@@ #1 } #2@{#1}
+}
+
+{\catcode`\^^M=\other%
+\gdef\eatleadingcr#1{\if\noexpand#1\noexpand^^M\else\E#1\fi}}%
+% Warning: this won't work for a delimited argument
+% or for an empty argument
+
+% Trim a single trailing ^^M off a string.
+{\catcode`\^^M=\other \catcode`\Q=3%
+\gdef\eatcr #1{\eatcra #1Q^^MQ}%
+\gdef\eatcra#1^^MQ{\eatcrb#1Q}%
+\gdef\eatcrb#1Q#2Q{#1}%
+}
+
+% Macro bodies are absorbed as an argument in a context where
+% all characters are catcode 10, 11 or 12, except \ which is active
+% (as in normal texinfo). It is necessary to change the definition of \
+% to recognize macro arguments; this is the job of \mbodybackslash.
+%
+% Non-ASCII encodings make 8-bit characters active, so un-activate
+% them to avoid their expansion.  Must do this non-globally, to
+% confine the change to the current group.
+%
+% It's necessary to have hard CRs when the macro is executed. This is
+% done by making ^^M (\endlinechar) catcode 12 when reading the macro
+% body, and then making it the \newlinechar in \scanmacro.
+%
+\def\scanctxt{% used as subroutine
+  \catcode`\"=\other
+  \catcode`\+=\other
+  \catcode`\<=\other
+  \catcode`\>=\other
+  \catcode`\^=\other
+  \catcode`\_=\other
+  \catcode`\|=\other
+  \catcode`\~=\other
+  \passthroughcharstrue
+}
+
+\def\scanargctxt{% used for copying and captions, not macros.
+  \scanctxt
+  \catcode`\@=\other
+  \catcode`\\=\other
+  \catcode`\^^M=\other
+}
+
+\def\macrobodyctxt{% used for @macro definitions
+  \scanctxt
+  \catcode`\ =\other
+  \catcode`\@=\other
+  \catcode`\{=\other
+  \catcode`\}=\other
+  \catcode`\^^M=\other
+  \usembodybackslash
+}
+
+% Used when scanning braced macro arguments.  Note, however, that catcode
+% changes here are ineffectual if the macro invocation was nested inside
+% an argument to another Texinfo command.
+\def\macroargctxt{%
+  \scanctxt
+  \catcode`\ =\active
+  \catcode`\@=\other
+  \catcode`\^^M=\other
+  \catcode`\\=\active
+}
+
+\def\macrolineargctxt{% used for whole-line arguments without braces
+  \scanctxt
+  \catcode`\@=\other
+  \catcode`\{=\other
+  \catcode`\}=\other
+}
+
+% \mbodybackslash is the definition of \ in @macro bodies.
+% It maps \foo\ => \csname macarg.foo\endcsname => #N
+% where N is the macro parameter number.
+% We define \csname macarg.\endcsname to be \realbackslash, so
+% \\ in macro replacement text gets you a backslash.
+%
+{\catcode`@=0 @catcode`@\=@active
+ @gdef@usembodybackslash{@let\=@mbodybackslash}
+ @gdef@mbodybackslash#1\{@csname macarg.#1@endcsname}
+}
+\expandafter\def\csname macarg.\endcsname{\realbackslash}
+
+\def\margbackslash#1{\char`\#1 }
+
+\def\macro{\recursivefalse\parsearg\macroxxx}
+\def\rmacro{\recursivetrue\parsearg\macroxxx}
+
+\def\macroxxx#1{%
+  \getargs{#1}% now \macname is the macname and \argl the arglist
+  \ifx\argl\empty       % no arguments
+     \paramno=0\relax
+  \else
+     \expandafter\parsemargdef \argl;%
+     \if\paramno>256\relax
+       \ifx\eTeXversion\thisisundefined
+         \errhelp = \EMsimple
+         \errmessage{You need eTeX to compile a file with macros with more than 256 arguments}
+       \fi
+     \fi
+  \fi
+  \if1\csname ismacro.\the\macname\endcsname
+     \message{Warning: redefining \the\macname}%
+  \else
+     \expandafter\ifx\csname \the\macname\endcsname \relax
+     \else \errmessage{Macro name \the\macname\space already defined}\fi
+     \global\cslet{macsave.\the\macname}{\the\macname}%
+     \global\expandafter\let\csname ismacro.\the\macname\endcsname=1%
+     \addtomacrolist{\the\macname}%
+  \fi
+  \begingroup \macrobodyctxt
+  \ifrecursive \expandafter\parsermacbody
+  \else \expandafter\parsemacbody
+  \fi}
+
+\parseargdef\unmacro{%
+  \if1\csname ismacro.#1\endcsname
+    \global\cslet{#1}{macsave.#1}%
+    \global\expandafter\let \csname ismacro.#1\endcsname=0%
+    % Remove the macro name from \macrolist:
+    \begingroup
+      \expandafter\let\csname#1\endcsname \relax
+      \let\commondummyword\unmacrodo
+      \xdef\macrolist{\macrolist}%
+    \endgroup
+  \else
+    \errmessage{Macro #1 not defined}%
+  \fi
+}
+
+% Called by \do from \dounmacro on each macro.  The idea is to omit any
+% macro definitions that have been changed to \relax.
+%
+\def\unmacrodo#1{%
+  \ifx #1\relax
+    % remove this
+  \else
+    \noexpand\commondummyword \noexpand#1%
+  \fi
+}
+
+% \getargs -- Parse the arguments to a @macro line.  Set \macname to
+% the name of the macro, and \argl to the braced argument list.
+\def\getargs#1{\getargsxxx#1{}}
+\def\getargsxxx#1#{\getmacname #1 \relax\getmacargs}
+\def\getmacname#1 #2\relax{\macname={#1}}
+\def\getmacargs#1{\def\argl{#1}}
+% This made use of the feature that if the last token of a
+% <parameter list> is #, then the preceding argument is delimited by
+% an opening brace, and that opening brace is not consumed.
+
+% Parse the optional {params} list to @macro or @rmacro.
+% Set \paramno to the number of arguments,
+% and \paramlist to a parameter text for the macro (e.g. #1,#2,#3 for a
+% three-param macro.)  Define \macarg.BLAH for each BLAH in the params
+% list to some hook where the argument is to be expanded.  If there are
+% less than 10 arguments that hook is to be replaced by ##N where N
+% is the position in that list, that is to say the macro arguments are to be
+% defined `a la TeX in the macro body.
+%
+% That gets used by \mbodybackslash (above).
+%
+% If there are 10 or more arguments, a different technique is used: see
+% \parsemmanyargdef.
+%
+\def\parsemargdef#1;{%
+  \paramno=0\def\paramlist{}%
+  \let\hash\relax
+  % \hash is redefined to `#' later to get it into definitions
+  \let\xeatspaces\relax
+  \let\xempty\relax
+  \parsemargdefxxx#1,;,%
+  \ifnum\paramno<10\relax\else
+    \paramno0\relax
+    \parsemmanyargdef@@#1,;,% 10 or more arguments
+  \fi
+}
+\def\parsemargdefxxx#1,{%
+  \if#1;\let\next=\relax
+  \else \let\next=\parsemargdefxxx
+    \advance\paramno by 1
+    \expandafter\edef\csname macarg.\eatspaces{#1}\endcsname
+        {\xeatspaces{\hash\the\paramno\noexpand\xempty{}}}%
+    \edef\paramlist{\paramlist\hash\the\paramno,}%
+  \fi\next}
+% the \xempty{} is to give \eatleadingcr an argument in the case of an
+% empty macro argument.
+
+% \parsemacbody, \parsermacbody
+%
+% Read recursive and nonrecursive macro bodies. (They're different since
+% rec and nonrec macros end differently.)
+%
+% We are in \macrobodyctxt, and the \xdef causes backslashshes in the macro
+% body to be transformed.
+% Set \macrobody to the body of the macro, and call \defmacro.
+%
+{\catcode`\ =\other\long\gdef\parsemacbody#1@end macro{%
+\xdef\macrobody{\eatcr{#1}}\endgroup\defmacro}}%
+{\catcode`\ =\other\long\gdef\parsermacbody#1@end rmacro{%
+\xdef\macrobody{\eatcr{#1}}\endgroup\defmacro}}%
+
+% Make @ a letter, so that we can make private-to-Texinfo macro names.
+\edef\texiatcatcode{\the\catcode`\@}
+\catcode `@=11\relax
+
+%%%%%%%%%%%%%% Code for > 10 arguments only   %%%%%%%%%%%%%%%%%%
+
+% If there are 10 or more arguments, a different technique is used, where the
+% hook remains in the body, and when macro is to be expanded the body is
+% processed again to replace the arguments.
+%
+% In that case, the hook is \the\toks N-1, and we simply set \toks N-1 to the
+% argument N value and then \edef the body (nothing else will expand because of
+% the catcode regime under which the body was input).
+%
+% If you compile with TeX (not eTeX), and you have macros with 10 or more
+% arguments, no macro can have more than 256 arguments (else error).
+%
+% In case that there are 10 or more arguments we parse again the arguments
+% list to set new definitions for the \macarg.BLAH macros corresponding to
+% each BLAH argument. It was anyhow needed to parse already once this list
+% in order to count the arguments, and as macros with at most 9 arguments
+% are by far more frequent than macro with 10 or more arguments, defining
+% twice the \macarg.BLAH macros does not cost too much processing power.
+\def\parsemmanyargdef@@#1,{%
+  \if#1;\let\next=\relax
+  \else
+    \let\next=\parsemmanyargdef@@
+    \edef\tempb{\eatspaces{#1}}%
+    \expandafter\def\expandafter\tempa
+       \expandafter{\csname macarg.\tempb\endcsname}%
+    % Note that we need some extra \noexpand\noexpand, this is because we
+    % don't want \the  to be expanded in the \parsermacbody  as it uses an
+    % \xdef .
+    \expandafter\edef\tempa
+      {\noexpand\noexpand\noexpand\the\toks\the\paramno}%
+    \advance\paramno by 1\relax
+  \fi\next}
+
+
+\let\endargs@\relax
+\let\nil@\relax
+\def\nilm@{\nil@}%
+\long\def\nillm@{\nil@}%
+
+% This macro is expanded during the Texinfo macro expansion, not during its
+% definition.  It gets all the arguments' values and assigns them to macros
+% macarg.ARGNAME
+%
+% #1 is the macro name
+% #2 is the list of argument names
+% #3 is the list of argument values
+\def\getargvals@#1#2#3{%
+  \def\macargdeflist@{}%
+  \def\saveparamlist@{#2}% Need to keep a copy for parameter expansion.
+  \def\paramlist{#2,\nil@}%
+  \def\macroname{#1}%
+  \begingroup
+  \macroargctxt
+  \def\argvaluelist{#3,\nil@}%
+  \def\@tempa{#3}%
+  \ifx\@tempa\empty
+    \setemptyargvalues@
+  \else
+    \getargvals@@
+  \fi
+}
+\def\getargvals@@{%
+  \ifx\paramlist\nilm@
+      % Some sanity check needed here that \argvaluelist is also empty.
+      \ifx\argvaluelist\nillm@
+      \else
+        \errhelp = \EMsimple
+        \errmessage{Too many arguments in macro `\macroname'!}%
+      \fi
+      \let\next\macargexpandinbody@
+  \else
+    \ifx\argvaluelist\nillm@
+       % No more arguments values passed to macro.  Set remaining named-arg
+       % macros to empty.
+       \let\next\setemptyargvalues@
+    \else
+      % pop current arg name into \@tempb
+      \def\@tempa##1{\pop@{\@tempb}{\paramlist}##1\endargs@}%
+      \expandafter\@tempa\expandafter{\paramlist}%
+       % pop current argument value into \@tempc
+      \def\@tempa##1{\longpop@{\@tempc}{\argvaluelist}##1\endargs@}%
+      \expandafter\@tempa\expandafter{\argvaluelist}%
+       % Here \@tempb is the current arg name and \@tempc is the current arg value.
+       % First place the new argument macro definition into \@tempd
+       \expandafter\macname\expandafter{\@tempc}%
+       \expandafter\let\csname macarg.\@tempb\endcsname\relax
+       \expandafter\def\expandafter\@tempe\expandafter{%
+         \csname macarg.\@tempb\endcsname}%
+       \edef\@tempd{\long\def\@tempe{\the\macname}}%
+       \push@\@tempd\macargdeflist@
+       \let\next\getargvals@@
+    \fi
+  \fi
+  \next
+}
+
+\def\push@#1#2{%
+  \expandafter\expandafter\expandafter\def
+  \expandafter\expandafter\expandafter#2%
+  \expandafter\expandafter\expandafter{%
+  \expandafter#1#2}%
+}
+
+% Replace arguments by their values in the macro body, and place the result
+% in macro \@tempa.
+%
+\def\macvalstoargs@{%
+  %  To do this we use the property that token registers that are \the'ed
+  % within an \edef  expand only once. So we are going to place all argument
+  % values into respective token registers.
+  %
+  % First we save the token context, and initialize argument numbering.
+  \begingroup
+    \paramno0\relax
+    % Then, for each argument number #N, we place the corresponding argument
+    % value into a new token list register \toks#N
+    \expandafter\putargsintokens@\saveparamlist@,;,%
+    % Then, we expand the body so that argument are replaced by their
+    % values. The trick for values not to be expanded themselves is that they
+    % are within tokens and that tokens expand only once in an \edef .
+    \edef\@tempc{\csname mac.\macroname .body\endcsname}%
+    % Now we restore the token stack pointer to free the token list registers
+    % which we have used, but we make sure that expanded body is saved after
+    % group.
+    \expandafter
+  \endgroup
+  \expandafter\def\expandafter\@tempa\expandafter{\@tempc}%
+  }
+
+% Define the named-macro outside of this group and then close this group.
+%
+\def\macargexpandinbody@{%
+  \expandafter
+  \endgroup
+  \macargdeflist@
+  % First the replace in body the macro arguments by their values, the result
+  % is in \@tempa .
+  \macvalstoargs@
+  % Then we point at the \norecurse or \gobble (for recursive) macro value
+  % with \@tempb .
+  \expandafter\let\expandafter\@tempb\csname mac.\macroname .recurse\endcsname
+  % Depending on whether it is recursive or not, we need some tailing
+  % \egroup .
+  \ifx\@tempb\gobble
+     \let\@tempc\relax
+  \else
+     \let\@tempc\egroup
+  \fi
+  % And now we do the real job:
+  \edef\@tempd{\noexpand\@tempb{\macroname}\noexpand\scanmacro{\@tempa}\@tempc}%
+  \@tempd
+}
+
+\def\putargsintokens@#1,{%
+  \if#1;\let\next\relax
+  \else
+    \let\next\putargsintokens@
+    % First we allocate the new token list register, and give it a temporary
+    % alias \@tempb .
+    \toksdef\@tempb\the\paramno
+    % Then we place the argument value into that token list register.
+    \expandafter\let\expandafter\@tempa\csname macarg.#1\endcsname
+    \expandafter\@tempb\expandafter{\@tempa}%
+    \advance\paramno by 1\relax
+  \fi
+  \next
+}
+
+% Trailing missing arguments are set to empty.
+%
+\def\setemptyargvalues@{%
+  \ifx\paramlist\nilm@
+    \let\next\macargexpandinbody@
+  \else
+    \expandafter\setemptyargvaluesparser@\paramlist\endargs@
+    \let\next\setemptyargvalues@
+  \fi
+  \next
+}
+
+\def\setemptyargvaluesparser@#1,#2\endargs@{%
+  \expandafter\def\expandafter\@tempa\expandafter{%
+    \expandafter\def\csname macarg.#1\endcsname{}}%
+  \push@\@tempa\macargdeflist@
+  \def\paramlist{#2}%
+}
+
+% #1 is the element target macro
+% #2 is the list macro
+% #3,#4\endargs@ is the list value
+\def\pop@#1#2#3,#4\endargs@{%
+   \def#1{#3}%
+   \def#2{#4}%
+}
+\long\def\longpop@#1#2#3,#4\endargs@{%
+   \long\def#1{#3}%
+   \long\def#2{#4}%
+}
+
+
+%%%%%%%%%%%%%% End of code for > 10 arguments %%%%%%%%%%%%%%%%%%
+
+
+% This defines a Texinfo @macro or @rmacro, called by \parsemacbody.
+%    \macrobody has the body of the macro in it, with placeholders for
+% its parameters, looking like "\xeatspaces{\hash 1}".
+%    \paramno is the number of parameters
+%    \paramlist is a TeX parameter text, e.g. "#1,#2,#3,"
+% There are four cases: macros of zero, one, up to nine, and many arguments.
+% \xdef is used so that macro definitions will survive the file
+% they're defined in: @include reads the file inside a group.
+%
+\def\defmacro{%
+  \let\hash=##% convert placeholders to macro parameter chars
+  \ifnum\paramno=1
+    \def\xeatspaces##1{##1}%
+    % This removes the pair of braces around the argument.  We don't
+    % use \eatspaces, because this can cause ends of lines to be lost
+    % when the argument to \eatspaces is read, leading to line-based
+    % commands like "@itemize" not being read correctly.
+  \else
+    \let\xeatspaces\relax % suppress expansion
+  \fi
+  \ifcase\paramno
+  % 0
+    \expandafter\xdef\csname\the\macname\endcsname{%
+      \bgroup
+        \noexpand\spaceisspace
+        \noexpand\endlineisspace
+        \noexpand\expandafter % skip any whitespace after the macro name.
+        \expandafter\noexpand\csname\the\macname @@@\endcsname}%
+    \expandafter\xdef\csname\the\macname @@@\endcsname{%
+      \egroup
+      \noexpand\scanmacro{\macrobody}}%
+  \or % 1
+    \expandafter\xdef\csname\the\macname\endcsname{%
+       \bgroup
+       \noexpand\braceorline
+       \expandafter\noexpand\csname\the\macname @@@\endcsname}%
+    \expandafter\xdef\csname\the\macname @@@\endcsname##1{%
+      \egroup
+      \noexpand\scanmacro{\macrobody}%
+      }%
+  \else % at most 9
+    \ifnum\paramno<10\relax
+      % @MACNAME sets the context for reading the macro argument
+      % @MACNAME@@ gets the argument, processes backslashes and appends a
+      % comma.
+      % @MACNAME@@@ removes braces surrounding the argument list.
+      % @MACNAME@@@@ scans the macro body with arguments substituted.
+      \expandafter\xdef\csname\the\macname\endcsname{%
+        \bgroup
+        \noexpand\expandafter  % This \expandafter skip any spaces after the
+        \noexpand\macroargctxt % macro before we change the catcode of space.
+        \noexpand\expandafter
+        \expandafter\noexpand\csname\the\macname @@\endcsname}%
+      \expandafter\xdef\csname\the\macname @@\endcsname##1{%
+          \noexpand\passargtomacro
+          \expandafter\noexpand\csname\the\macname @@@\endcsname{##1,}}%
+      \expandafter\xdef\csname\the\macname @@@\endcsname##1{%
+          \expandafter\noexpand\csname\the\macname @@@@\endcsname ##1}%
+      \expandafter\expandafter
+      \expandafter\xdef
+      \expandafter\expandafter
+        \csname\the\macname @@@@\endcsname\paramlist{%
+          \egroup\noexpand\scanmacro{\macrobody}}%
+    \else % 10 or more:
+      \expandafter\xdef\csname\the\macname\endcsname{%
+        \noexpand\getargvals@{\the\macname}{\argl}%
+      }%
+      \global\expandafter\let\csname mac.\the\macname .body\endcsname\macrobody
+      \global\expandafter\let\csname mac.\the\macname .recurse\endcsname\gobble
+    \fi
+  \fi}
+
+\catcode `\@\texiatcatcode\relax % end private-to-Texinfo catcodes
+
+\def\norecurse#1{\bgroup\cslet{#1}{macsave.#1}}
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+{\catcode`\@=0 \catcode`\\=13  % We need to manipulate \ so use @ as escape
+@catcode`@_=11  % private names
+@catcode`@!=11  % used as argument separator
+
+% \passargtomacro#1#2 -
+% Call #1 with a list of tokens #2, with any doubled backslashes in #2
+% compressed to one.
+%
+% This implementation works by expansion, and not execution (so we cannot use
+% \def or similar).  This reduces the risk of this failing in contexts where
+% complete expansion is done with no execution (for example, in writing out to
+% an auxiliary file for an index entry).
+%
+% State is kept in the input stream: the argument passed to
+% @look_ahead, @gobble_and_check_finish and @add_segment is
+%
+% THE_MACRO ARG_RESULT ! {PENDING_BS} NEXT_TOKEN  (... rest of input)
+%
+% where:
+% THE_MACRO - name of the macro we want to call
+% ARG_RESULT - argument list we build to pass to that macro
+% PENDING_BS - either a backslash or nothing
+% NEXT_TOKEN - used to look ahead in the input stream to see what's coming next
+
+@gdef@passargtomacro#1#2{%
+  @add_segment #1!{}@relax#2\@_finish\%
+}
+@gdef@_finish{@_finishx} @global@let@_finishx@relax
+
+% #1 - THE_MACRO ARG_RESULT
+% #2 - PENDING_BS
+% #3 - NEXT_TOKEN
+% #4 used to look ahead
+%
+% If the next token is not a backslash, process the rest of the argument;
+% otherwise, remove the next token.
+@gdef@look_ahead#1!#2#3#4{%
+  @ifx#4\%
+   @expandafter@gobble_and_check_finish
+  @else
+   @expandafter@add_segment
+  @fi#1!{#2}#4#4%
+}
+
+% #1 - THE_MACRO ARG_RESULT
+% #2 - PENDING_BS
+% #3 - NEXT_TOKEN
+% #4 should be a backslash, which is gobbled.
+% #5 looks ahead
+%
+% Double backslash found.  Add a single backslash, and look ahead.
+@gdef@gobble_and_check_finish#1!#2#3#4#5{%
+  @add_segment#1\!{}#5#5%
+}
+
+@gdef@is_fi{@fi}
+
+% #1 - THE_MACRO ARG_RESULT
+% #2 - PENDING_BS
+% #3 - NEXT_TOKEN
+% #4 is input stream until next backslash
+%
+% Input stream is either at the start of the argument, or just after a
+% backslash sequence, either a lone backslash, or a doubled backslash.
+% NEXT_TOKEN contains the first token in the input stream: if it is \finish,
+% finish; otherwise, append to ARG_RESULT the segment of the argument up until
+% the next backslash.  PENDING_BACKSLASH contains a backslash to represent
+% a backslash just before the start of the input stream that has not been
+% added to ARG_RESULT.
+@gdef@add_segment#1!#2#3#4\{%
+@ifx#3@_finish
+  @call_the_macro#1!%
+@else
+  % append the pending backslash to the result, followed by the next segment
+  @expandafter@is_fi@look_ahead#1#2#4!{\}@fi
+  % this @fi is discarded by @look_ahead.
+  % we can't get rid of it with \expandafter because we don't know how
+  % long #4 is.
+}
+
+% #1 - THE_MACRO
+% #2 - ARG_RESULT
+% #3 discards the res of the conditional in @add_segment, and @is_fi ends the
+% conditional.
+@gdef@call_the_macro#1#2!#3@fi{@is_fi #1{#2}}
+
+}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% \braceorline MAC is used for a one-argument macro MAC.  It checks
+% whether the next non-whitespace character is a {.  It sets the context
+% for reading the argument (slightly different in the two cases).  Then,
+% to read the argument, in the whole-line case, it then calls the regular
+% \parsearg MAC; in the lbrace case, it calls \passargtomacro MAC.
+%
+\def\braceorline#1{\let\macnamexxx=#1\futurelet\nchar\braceorlinexxx}
+\def\braceorlinexxx{%
+  \ifx\nchar\bgroup
+    \macroargctxt
+    \expandafter\passargtomacro
+  \else
+    \macrolineargctxt\expandafter\parsearg
+  \fi \macnamexxx}
+
+
+% @alias.
+% We need some trickery to remove the optional spaces around the equal
+% sign.  Make them active and then expand them all to nothing.
+%
+\def\alias{\parseargusing\obeyspaces\aliasxxx}
+\def\aliasxxx #1{\aliasyyy#1\relax}
+\def\aliasyyy #1=#2\relax{%
+  {%
+    \expandafter\let\obeyedspace=\empty
+    \addtomacrolist{#1}%
+    \xdef\next{\global\let\makecsname{#1}=\makecsname{#2}}%
+  }%
+  \next
+}
+
+
+\message{cross references,}
+
+\newwrite\auxfile
+\newif\ifhavexrefs    % True if xref values are known.
+\newif\ifwarnedxrefs  % True if we warned once that they aren't known.
+
+% @inforef is relatively simple.
+\def\inforef #1{\inforefzzz #1,,,,**}
+\def\inforefzzz #1,#2,#3,#4**{%
+  \putwordSee{} \putwordInfo{} \putwordfile{} \file{\ignorespaces #3{}},
+  node \samp{\ignorespaces#1{}}}
+
+% @node's only job in TeX is to define \lastnode, which is used in
+% cross-references.  The @node line might or might not have commas, and
+% might or might not have spaces before the first comma, like:
+% @node foo , bar , ...
+% We don't want such trailing spaces in the node name.
+%
+\parseargdef\node{\checkenv{}\donode #1 ,\finishnodeparse}
+%
+% also remove a trailing comma, in case of something like this:
+% @node Help-Cross,  ,  , Cross-refs
+\def\donode#1 ,#2\finishnodeparse{\dodonode #1,\finishnodeparse}
+\def\dodonode#1,#2\finishnodeparse{\gdef\lastnode{#1}\omittopnode}
+
+% Used so that the @top node doesn't have to be wrapped in an @ifnottex
+% conditional.
+% \doignore goes to more effort to skip nested conditionals but we don't need
+% that here.
+\def\omittopnode{%
+   \ifx\lastnode\wordTop
+   \expandafter\ignorenode\fi
+}
+\def\wordTop{Top}
+
+% Until the next @node or @bye command, divert output to a box that is not
+% output.
+\def\ignorenode{\setbox\dummybox\vbox\bgroup\def\node{\egroup\node}%
+\ignorenodebye
+}
+
+{\let\bye\relax
+\gdef\ignorenodebye{\let\bye\ignorenodebyedef}
+\gdef\ignorenodebyedef{\egroup(`Top' node ignored)\bye}}
+% The redefinition of \bye here is because it is declared \outer
+
+\let\lastnode=\empty
+
+% Write a cross-reference definition for the current node.  #1 is the
+% type (Ynumbered, Yappendix, Ynothing).
+%
+\def\donoderef#1{%
+  \ifx\lastnode\empty\else
+    \setref{\lastnode}{#1}%
+    \global\let\lastnode=\empty
+  \fi
+}
+
+% @anchor{NAME} -- define xref target at arbitrary point.
+%
+\newcount\savesfregister
+%
+\def\savesf{\relax \ifhmode \savesfregister=\spacefactor \fi}
+\def\restoresf{\relax \ifhmode \spacefactor=\savesfregister \fi}
+\def\anchor#1{\savesf \setref{#1}{Ynothing}\restoresf \ignorespaces}
+
+% \setref{NAME}{SNT} defines a cross-reference point NAME (a node or an
+% anchor), which consists of three parts:
+% 1) NAME-title - the current sectioning name taken from \currentsection,
+%                 or the anchor name.
+% 2) NAME-snt   - section number and type, passed as the SNT arg, or
+%                 empty for anchors.
+% 3) NAME-pg    - the page number.
+%
+% This is called from \donoderef, \anchor, and \dofloat.  In the case of
+% floats, there is an additional part, which is not written here:
+% 4) NAME-lof   - the text as it should appear in a @listoffloats.
+%
+\def\setref#1#2{%
+  \pdfmkdest{#1}%
+  \iflinks
+    {%
+      \requireauxfile
+      \atdummies  % preserve commands, but don't expand them
+      % match definition in \xrdef, \refx, \xrefX.
+      \def\value##1{##1}%
+      \edef\writexrdef##1##2{%
+	\write\auxfile{@xrdef{#1-% #1 of \setref, expanded by the \edef
+	  ##1}{##2}}% these are parameters of \writexrdef
+      }%
+      \toks0 = \expandafter{\currentsection}%
+      \immediate \writexrdef{title}{\the\toks0 }%
+      \immediate \writexrdef{snt}{\csname #2\endcsname}% \Ynumbered etc.
+      \safewhatsit{\writexrdef{pg}{\folio}}% will be written later, at \shipout
+    }%
+  \fi
+}
+
+% @xrefautosectiontitle on|off says whether @section(ing) names are used
+% automatically in xrefs, if the third arg is not explicitly specified.
+% This was provided as a "secret" @set xref-automatic-section-title
+% variable, now it's official.
+%
+\parseargdef\xrefautomaticsectiontitle{%
+  \def\temp{#1}%
+  \ifx\temp\onword
+    \expandafter\let\csname SETxref-automatic-section-title\endcsname
+      = \empty
+  \else\ifx\temp\offword
+    \expandafter\let\csname SETxref-automatic-section-title\endcsname
+      = \relax
+  \else
+    \errhelp = \EMsimple
+    \errmessage{Unknown @xrefautomaticsectiontitle value `\temp',
+                must be on|off}%
+  \fi\fi
+}
+
+%
+% @xref, @pxref, and @ref generate cross-references.  For \xrefX, #1 is
+% the node name, #2 the name of the Info cross-reference, #3 the printed
+% node name, #4 the name of the Info file, #5 the name of the printed
+% manual.  All but the node name can be omitted.
+%
+\def\pxref{\putwordsee{} \xrefXX}
+\def\xref{\putwordSee{} \xrefXX}
+\def\ref{\xrefXX}
+
+\def\xrefXX#1{\def\xrefXXarg{#1}\futurelet\tokenafterxref\xrefXXX}
+\def\xrefXXX{\expandafter\xrefX\expandafter[\xrefXXarg,,,,,,,]}
+%
+\newbox\toprefbox
+\newbox\printedrefnamebox
+\newbox\infofilenamebox
+\newbox\printedmanualbox
+%
+\def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup
+  \unsepspaces
+  %
+  % Get args without leading/trailing spaces.
+  \def\printedrefname{\ignorespaces #3}%
+  \setbox\printedrefnamebox = \hbox{\printedrefname\unskip}%
+  %
+  \def\infofilename{\ignorespaces #4}%
+  \setbox\infofilenamebox = \hbox{\infofilename\unskip}%
+  %
+  \def\printedmanual{\ignorespaces #5}%
+  \setbox\printedmanualbox  = \hbox{\printedmanual\unskip}%
+  %
+  % If the printed reference name (arg #3) was not explicitly given in
+  % the @xref, figure out what we want to use.
+  \ifdim \wd\printedrefnamebox = 0pt
+    % No printed node name was explicitly given.
+    \expandafter\ifx\csname SETxref-automatic-section-title\endcsname \relax
+      % Not auto section-title: use node name inside the square brackets.
+      \def\printedrefname{\ignorespaces #1}%
+    \else
+      % Auto section-title: use chapter/section title inside
+      % the square brackets if we have it.
+      \ifdim \wd\printedmanualbox > 0pt
+        % It is in another manual, so we don't have it; use node name.
+        \def\printedrefname{\ignorespaces #1}%
+      \else
+        \ifhavexrefs
+          % We (should) know the real title if we have the xref values.
+          \def\printedrefname{\refx{#1-title}}%
+        \else
+          % Otherwise just copy the Info node name.
+          \def\printedrefname{\ignorespaces #1}%
+        \fi%
+      \fi
+    \fi
+  \fi
+  %
+  % Make link in pdf output.
+  \ifpdf
+    % For pdfTeX and LuaTeX
+    {\indexnofonts
+     \makevalueexpandable
+     \turnoffactive
+     % This expands tokens, so do it after making catcode changes, so _
+     % etc. don't get their TeX definitions.  This ignores all spaces in
+     % #4, including (wrongly) those in the middle of the filename.
+     \getfilename{#4}%
+     %
+     % This (wrongly) does not take account of leading or trailing
+     % spaces in #1, which should be ignored.
+     \setpdfdestname{#1}%
+     %
+     \ifx\pdfdestname\empty
+       \def\pdfdestname{Top}% no empty targets
+     \fi
+     %
+     \leavevmode
+     \startlink attr{/Border [0 0 0]}%
+     \ifnum\filenamelength>0
+       goto file{\the\filename.pdf} name{\pdfdestname}%
+     \else
+       goto name{\pdfmkpgn{\pdfdestname}}%
+     \fi
+    }%
+    \setcolor{\linkcolor}%
+  \else
+    \ifx\XeTeXrevision\thisisundefined
+    \else
+      % For XeTeX
+      {\indexnofonts
+       \makevalueexpandable
+       \turnoffactive
+       % This expands tokens, so do it after making catcode changes, so _
+       % etc. don't get their TeX definitions.  This ignores all spaces in
+       % #4, including (wrongly) those in the middle of the filename.
+       \getfilename{#4}%
+       %
+       % This (wrongly) does not take account of leading or trailing
+       % spaces in #1, which should be ignored.
+       \setpdfdestname{#1}%
+       %
+       \ifx\pdfdestname\empty
+         \def\pdfdestname{Top}% no empty targets
+       \fi
+       %
+       \leavevmode
+       \ifnum\filenamelength>0
+         % With default settings,
+         % XeTeX (xdvipdfmx) replaces link destination names with integers.
+         % In this case, the replaced destination names of
+         % remote PDFs are no longer known.  In order to avoid a replacement,
+         % you can use xdvipdfmx's command line option `-C 0x0010'.
+         % If you use XeTeX 0.99996+ (TeX Live 2016+),
+         % this command line option is no longer necessary
+         % because we can use the `dvipdfmx:config' special.
+         \special{pdf:bann << /Border [0 0 0] /Type /Annot /Subtype /Link /A
+           << /S /GoToR /F (\the\filename.pdf) /D (\pdfdestname) >> >>}%
+       \else
+         \special{pdf:bann << /Border [0 0 0] /Type /Annot /Subtype /Link /A
+           << /S /GoTo /D (\pdfdestname) >> >>}%
+       \fi
+      }%
+      \setcolor{\linkcolor}%
+    \fi
+  \fi
+  {%
+    % Have to otherify everything special to allow the \csname to
+    % include an _ in the xref name, etc.
+    \indexnofonts
+    \turnoffactive
+    \def\value##1{##1}%
+    \expandafter\global\expandafter\let\expandafter\Xthisreftitle
+      \csname XR#1-title\endcsname
+  }%
+  %
+  % Float references are printed completely differently: "Figure 1.2"
+  % instead of "[somenode], p.3".  \iffloat distinguishes them by
+  % \Xthisreftitle being set to a magic string.
+  \iffloat\Xthisreftitle
+    % If the user specified the print name (third arg) to the ref,
+    % print it instead of our usual "Figure 1.2".
+    \ifdim\wd\printedrefnamebox = 0pt
+      \refx{#1-snt}%
+    \else
+      \printedrefname
+    \fi
+    %
+    % If the user also gave the printed manual name (fifth arg), append
+    % "in MANUALNAME".
+    \ifdim \wd\printedmanualbox > 0pt
+      \space \putwordin{} \cite{\printedmanual}%
+    \fi
+  \else
+    % node/anchor (non-float) references.
+    %
+    % If we use \unhbox to print the node names, TeX does not insert
+    % empty discretionaries after hyphens, which means that it will not
+    % find a line break at a hyphen in a node names.  Since some manuals
+    % are best written with fairly long node names, containing hyphens,
+    % this is a loss.  Therefore, we give the text of the node name
+    % again, so it is as if TeX is seeing it for the first time.
+    %
+    \ifdim \wd\printedmanualbox > 0pt
+      % Cross-manual reference with a printed manual name.
+      %
+      \crossmanualxref{\cite{\printedmanual\unskip}}%
+    %
+    \else\ifdim \wd\infofilenamebox > 0pt
+      % Cross-manual reference with only an info filename (arg 4), no
+      % printed manual name (arg 5).  This is essentially the same as
+      % the case above; we output the filename, since we have nothing else.
+      %
+      \crossmanualxref{\code{\infofilename\unskip}}%
+    %
+    \else
+      % Reference within this manual.
+      %
+      % Only output a following space if the -snt ref is nonempty, as the ref
+      % will be empty for @unnumbered and @anchor.
+      \setbox2 = \hbox{\ignorespaces \refx{#1-snt}}%
+      \ifdim \wd2 > 0pt \refx{#1-snt}\space\fi
+      %
+      % output the `[mynode]' via the macro below so it can be overridden.
+      \xrefprintnodename\printedrefname
+      %
+      \expandafter\ifx\csname SETtxiomitxrefpg\endcsname\relax
+        % But we always want a comma and a space:
+        ,\space
+        %
+        % output the `page 3'.
+        \turnoffactive \putwordpage\tie\refx{#1-pg}%
+        % Add a , if xref followed by a space
+        \if\space\noexpand\tokenafterxref ,%
+        \else\ifx\	\tokenafterxref ,% @TAB
+        \else\ifx\*\tokenafterxref ,%   @*
+        \else\ifx\ \tokenafterxref ,%   @SPACE
+        \else\ifx\
+                  \tokenafterxref ,%    @NL
+        \else\ifx\tie\tokenafterxref ,% @tie
+        \fi\fi\fi\fi\fi\fi
+      \fi
+    \fi\fi
+  \fi
+  \endlink
+\endgroup}
+
+% Output a cross-manual xref to #1.  Used just above (twice).
+%
+% Only include the text "Section ``foo'' in" if the foo is neither
+% missing or Top.  Thus, @xref{,,,foo,The Foo Manual} outputs simply
+% "see The Foo Manual", the idea being to refer to the whole manual.
+%
+% But, this being TeX, we can't easily compare our node name against the
+% string "Top" while ignoring the possible spaces before and after in
+% the input.  By adding the arbitrary 7sp below, we make it much less
+% likely that a real node name would have the same width as "Top" (e.g.,
+% in a monospaced font).  Hopefully it will never happen in practice.
+%
+% For the same basic reason, we retypeset the "Top" at every
+% reference, since the current font is indeterminate.
+%
+\def\crossmanualxref#1{%
+  \setbox\toprefbox = \hbox{Top\kern7sp}%
+  \setbox2 = \hbox{\ignorespaces \printedrefname \unskip \kern7sp}%
+  \ifdim \wd2 > 7sp  % nonempty?
+    \ifdim \wd2 = \wd\toprefbox \else  % same as Top?
+      \putwordSection{} ``\printedrefname'' \putwordin{}\space
+    \fi
+  \fi
+  #1%
+}
+
+% This macro is called from \xrefX for the `[nodename]' part of xref
+% output.  It's a separate macro only so it can be changed more easily,
+% since square brackets don't work well in some documents.  Particularly
+% one that Bob is working on :).
+%
+\def\xrefprintnodename#1{[#1]}
+
+% Things referred to by \setref.
+%
+\def\Ynothing{}
+\def\Yomitfromtoc{}
+\def\Ynumbered{%
+  \ifnum\secno=0
+    \putwordChapter@tie \the\chapno
+  \else \ifnum\subsecno=0
+    \putwordSection@tie \the\chapno.\the\secno
+  \else \ifnum\subsubsecno=0
+    \putwordSection@tie \the\chapno.\the\secno.\the\subsecno
+  \else
+    \putwordSection@tie \the\chapno.\the\secno.\the\subsecno.\the\subsubsecno
+  \fi\fi\fi
+}
+\def\Yappendix{%
+  \ifnum\secno=0
+     \putwordAppendix@tie @char\the\appendixno{}%
+  \else \ifnum\subsecno=0
+     \putwordSection@tie @char\the\appendixno.\the\secno
+  \else \ifnum\subsubsecno=0
+    \putwordSection@tie @char\the\appendixno.\the\secno.\the\subsecno
+  \else
+    \putwordSection@tie
+      @char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno
+  \fi\fi\fi
+}
+
+% \refx{NAME} - reference a cross-reference string named NAME.
+\def\refx#1{%
+  \requireauxfile
+  {%
+    \indexnofonts
+    \turnoffactive
+    \def\value##1{##1}%
+    \expandafter\global\expandafter\let\expandafter\thisrefX
+      \csname XR#1\endcsname
+  }%
+  \ifx\thisrefX\relax
+    % If not defined, say something at least.
+    \angleleft un\-de\-fined\angleright
+    \iflinks
+      \ifhavexrefs
+        {\toks0 = {#1}% avoid expansion of possibly-complex value
+         \message{\linenumber Undefined cross reference `\the\toks0'.}}%
+      \else
+        \ifwarnedxrefs\else
+          \global\warnedxrefstrue
+          \message{Cross reference values unknown; you must run TeX again.}%
+        \fi
+      \fi
+    \fi
+  \else
+    % It's defined, so just use it.
+    \thisrefX
+  \fi
+}
+
+% This is the macro invoked by entries in the aux file.  Define a control
+% sequence for a cross-reference target (we prepend XR to the control sequence
+% name to avoid collisions).  The value is the page number.  If this is a float
+% type, we have more work to do.
+%
+\def\xrdef#1#2{%
+  {% Expand the node or anchor name to remove control sequences.
+   % \turnoffactive stops 8-bit characters being changed to commands
+   % like @'e.  \refx does the same to retrieve the value in the definition.
+    \indexnofonts
+    \turnoffactive
+    \def\value##1{##1}%
+    \xdef\safexrefname{#1}%
+  }%
+  %
+  \bgroup
+    \expandafter\gdef\csname XR\safexrefname\endcsname{#2}%
+  \egroup
+  % We put the \gdef inside a group to avoid the definitions building up on
+  % TeX's save stack, which can cause it to run out of space for aux files with
+  % thousands of lines.  \gdef doesn't use the save stack, but \csname does
+  % when it defines an unknown control sequence as \relax.
+  %
+  % Was that xref control sequence that we just defined for a float?
+  \expandafter\iffloat\csname XR\safexrefname\endcsname
+    % it was a float, and we have the (safe) float type in \iffloattype.
+    \expandafter\let\expandafter\floatlist
+      \csname floatlist\iffloattype\endcsname
+    %
+    % Is this the first time we've seen this float type?
+    \expandafter\ifx\floatlist\relax
+      \toks0 = {\do}% yes, so just \do
+    \else
+      % had it before, so preserve previous elements in list.
+      \toks0 = \expandafter{\floatlist\do}%
+    \fi
+    %
+    % Remember this xref in the control sequence \floatlistFLOATTYPE,
+    % for later use in \listoffloats.
+    \expandafter\xdef\csname floatlist\iffloattype\endcsname{\the\toks0
+      {\safexrefname}}%
+  \fi
+}
+
+% If working on a large document in chapters, it is convenient to
+% be able to disable indexing, cross-referencing, and contents, for test runs.
+% This is done with @novalidate at the beginning of the file.
+%
+\newif\iflinks \linkstrue % by default we want the aux files.
+\let\novalidate = \linksfalse
+
+% Used when writing to the aux file, or when using data from it.
+\def\requireauxfile{%
+  \iflinks
+    \tryauxfile
+    % Open the new aux file.  TeX will close it automatically at exit.
+    \immediate\openout\auxfile=\jobname.aux
+  \fi
+  \global\let\requireauxfile=\relax   % Only do this once.
+}
+
+% Read the last existing aux file, if any.  No error if none exists.
+%
+\def\tryauxfile{%
+  \openin 1 \jobname.aux
+  \ifeof 1 \else
+    \readdatafile{aux}%
+    \global\havexrefstrue
+  \fi
+  \closein 1
+}
+
+\def\setupdatafile{%
+  \catcode`\^^@=\other
+  \catcode`\^^A=\other
+  \catcode`\^^B=\other
+  \catcode`\^^C=\other
+  \catcode`\^^D=\other
+  \catcode`\^^E=\other
+  \catcode`\^^F=\other
+  \catcode`\^^G=\other
+  \catcode`\^^H=\other
+  \catcode`\^^K=\other
+  \catcode`\^^L=\other
+  \catcode`\^^N=\other
+  \catcode`\^^P=\other
+  \catcode`\^^Q=\other
+  \catcode`\^^R=\other
+  \catcode`\^^S=\other
+  \catcode`\^^T=\other
+  \catcode`\^^U=\other
+  \catcode`\^^V=\other
+  \catcode`\^^W=\other
+  \catcode`\^^X=\other
+  \catcode`\^^Z=\other
+  \catcode`\^^[=\other
+  \catcode`\^^\=\other
+  \catcode`\^^]=\other
+  \catcode`\^^^=\other
+  \catcode`\^^_=\other
+  \catcode`\^=\other
+  %
+  % Special characters.  Should be turned off anyway, but...
+  \catcode`\~=\other
+  \catcode`\[=\other
+  \catcode`\]=\other
+  \catcode`\"=\other
+  \catcode`\_=\active
+  \catcode`\|=\active
+  \catcode`\<=\active
+  \catcode`\>=\active
+  \catcode`\$=\other
+  \catcode`\#=\other
+  \catcode`\&=\other
+  \catcode`\%=\other
+  \catcode`+=\other % avoid \+ for paranoia even though we've turned it off
+  %
+  \catcode`\\=\active
+  %
+  % @ is our escape character in .aux files, and we need braces.
+  \catcode`\{=1
+  \catcode`\}=2
+  \catcode`\@=0
+}
+
+\def\readdatafile#1{%
+\begingroup
+  \setupdatafile
+  \input\jobname.#1
+\endgroup}
+
+
+\message{insertions,}
+% including footnotes.
+
+\newcount \footnoteno
+
+% The trailing space in the following definition for supereject is
+% vital for proper filling; pages come out unaligned when you do a
+% pagealignmacro call if that space before the closing brace is
+% removed. (Generally, numeric constants should always be followed by a
+% space to prevent strange expansion errors.)
+\def\supereject{\par\penalty -20000\footnoteno =0 }
+
+% @footnotestyle is meaningful for Info output only.
+\let\footnotestyle=\comment
+
+{\catcode `\@=11
+%
+% Auto-number footnotes.  Otherwise like plain.
+\gdef\footnote{%
+  \global\advance\footnoteno by \@ne
+  \edef\thisfootno{$^{\the\footnoteno}$}%
+  %
+  % In case the footnote comes at the end of a sentence, preserve the
+  % extra spacing after we do the footnote number.
+  \let\@sf\empty
+  \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\ptexslash\fi
+  %
+  % Remove inadvertent blank space before typesetting the footnote number.
+  \unskip
+  \thisfootno\@sf
+  \dofootnote
+}%
+
+% Don't bother with the trickery in plain.tex to not require the
+% footnote text as a parameter.  Our footnotes don't need to be so general.
+%
+% Oh yes, they do; otherwise, @ifset (and anything else that uses
+% \parseargline) fails inside footnotes because the tokens are fixed when
+% the footnote is read.  --karl, 16nov96.
+%
+\gdef\dofootnote{%
+  \insert\footins\bgroup
+  %
+  % Nested footnotes are not supported in TeX, that would take a lot
+  % more work.  (\startsavinginserts does not suffice.)
+  \let\footnote=\errfootnotenest
+  %
+  % We want to typeset this text as a normal paragraph, even if the
+  % footnote reference occurs in (for example) a display environment.
+  % So reset some parameters.
+  \hsize=\txipagewidth
+  \interlinepenalty\interfootnotelinepenalty
+  \splittopskip\ht\strutbox % top baseline for broken footnotes
+  \splitmaxdepth\dp\strutbox
+  \floatingpenalty\@MM
+  \leftskip\z@skip
+  \rightskip\z@skip
+  \spaceskip\z@skip
+  \xspaceskip\z@skip
+  \parindent\defaultparindent
+  %
+  \smallfonts \rm
+  %
+  % Because we use hanging indentation in footnotes, a @noindent appears
+  % to exdent this text, so make it be a no-op.  makeinfo does not use
+  % hanging indentation so @noindent can still be needed within footnote
+  % text after an @example or the like (not that this is good style).
+  \let\noindent = \relax
+  %
+  % Hang the footnote text off the number.  Use \everypar in case the
+  % footnote extends for more than one paragraph.
+  \everypar = {\hang}%
+  \textindent{\thisfootno}%
+  %
+  % Don't crash into the line above the footnote text.  Since this
+  % expands into a box, it must come within the paragraph, lest it
+  % provide a place where TeX can split the footnote.
+  \footstrut
+  %
+  % Invoke rest of plain TeX footnote routine.
+  \futurelet\next\fo@t
+}
+}%end \catcode `\@=11
+
+\def\errfootnotenest{%
+  \errhelp=\EMsimple
+  \errmessage{Nested footnotes not supported in texinfo.tex,
+    even though they work in makeinfo; sorry}
+}
+
+\def\errfootnoteheading{%
+  \errhelp=\EMsimple
+  \errmessage{Footnotes in chapters, sections, etc., are not supported}
+}
+
+% In case a @footnote appears in a vbox, save the footnote text and create
+% the real \insert just after the vbox finished.  Otherwise, the insertion
+% would be lost.
+% Similarly, if a @footnote appears inside an alignment, save the footnote
+% text to a box and make the \insert when a row of the table is finished.
+% And the same can be done for other insert classes.  --kasal, 16nov03.
+%
+% Replace the \insert primitive by a cheating macro.
+% Deeper inside, just make sure that the saved insertions are not spilled
+% out prematurely.
+%
+\def\startsavinginserts{%
+  \ifx \insert\ptexinsert
+    \let\insert\saveinsert
+  \else
+    \let\checkinserts\relax
+  \fi
+}
+
+% This \insert replacement works for both \insert\footins{foo} and
+% \insert\footins\bgroup foo\egroup, but it doesn't work for \insert27{foo}.
+%
+\def\saveinsert#1{%
+  \edef\next{\noexpand\savetobox \makeSAVEname#1}%
+  \afterassignment\next
+  % swallow the left brace
+  \let\temp =
+}
+\def\makeSAVEname#1{\makecsname{SAVE\expandafter\gobble\string#1}}
+\def\savetobox#1{\global\setbox#1 = \vbox\bgroup \unvbox#1}
+
+\def\checksaveins#1{\ifvoid#1\else \placesaveins#1\fi}
+
+\def\placesaveins#1{%
+  \ptexinsert \csname\expandafter\gobblesave\string#1\endcsname
+    {\box#1}%
+}
+
+% eat @SAVE -- beware, all of them have catcode \other:
+{
+  \def\dospecials{\do S\do A\do V\do E} \uncatcodespecials  %  ;-)
+  \gdef\gobblesave @SAVE{}
+}
+
+% initialization:
+\def\newsaveins #1{%
+  \edef\next{\noexpand\newsaveinsX \makeSAVEname#1}%
+  \next
+}
+\def\newsaveinsX #1{%
+  \csname newbox\endcsname #1%
+  \expandafter\def\expandafter\checkinserts\expandafter{\checkinserts
+    \checksaveins #1}%
+}
+
+% initialize:
+\let\checkinserts\empty
+\newsaveins\footins
+\newsaveins\margin
+
+
+% @image.  We use the macros from epsf.tex to support this.
+% If epsf.tex is not installed and @image is used, we complain.
+%
+% Check for and read epsf.tex up front.  If we read it only at @image
+% time, we might be inside a group, and then its definitions would get
+% undone and the next image would fail.
+\openin 1 = epsf.tex
+\ifeof 1 \else
+  % Do not bother showing banner with epsf.tex v2.7k (available in
+  % doc/epsf.tex and on ctan).
+  \def\epsfannounce{\toks0 = }%
+  \input epsf.tex
+\fi
+\closein 1
+%
+% We will only complain once about lack of epsf.tex.
+\newif\ifwarnednoepsf
+\newhelp\noepsfhelp{epsf.tex must be installed for images to
+  work.  It is also included in the Texinfo distribution, or you can get
+  it from https://ctan.org/texarchive/macros/texinfo/texinfo/doc/epsf.tex.}
+%
+\def\image#1{%
+  \ifx\epsfbox\thisisundefined
+    \ifwarnednoepsf \else
+      \errhelp = \noepsfhelp
+      \errmessage{epsf.tex not found, images will be ignored}%
+      \global\warnednoepsftrue
+    \fi
+  \else
+    \imagexxx #1,,,,,\finish
+  \fi
+}
+%
+% Arguments to @image:
+% #1 is (mandatory) image filename; we tack on .eps extension.
+% #2 is (optional) width, #3 is (optional) height.
+% #4 is (ignored optional) html alt text.
+% #5 is (ignored optional) extension.
+% #6 is just the usual extra ignored arg for parsing stuff.
+\newif\ifimagevmode
+\def\imagexxx#1,#2,#3,#4,#5,#6\finish{\begingroup
+  \catcode`\^^M = 5     % in case we're inside an example
+  \normalturnoffactive  % allow _ et al. in names
+  \makevalueexpandable
+  % If the image is by itself, center it.
+  \ifvmode
+    \imagevmodetrue
+  \else \ifx\centersub\centerV
+    % for @center @image, we need a vbox so we can have our vertical space
+    \imagevmodetrue
+    \vbox\bgroup % vbox has better behavior than vtop herev
+  \fi\fi
+  %
+  \ifimagevmode
+    \nobreak\medskip
+    % Usually we'll have text after the image which will insert
+    % \parskip glue, so insert it here too to equalize the space
+    % above and below.
+    \nobreak\vskip\parskip
+    \nobreak
+  \fi
+  %
+  % Leave vertical mode so that indentation from an enclosing
+  %  environment such as @quotation is respected.
+  % However, if we're at the top level, we don't want the
+  %  normal paragraph indentation.
+  % On the other hand, if we are in the case of @center @image, we don't
+  %  want to start a paragraph, which will create a hsize-width box and
+  %  eradicate the centering.
+  \ifx\centersub\centerV \else \imageindent \fi
+  %
+  % Output the image.
+  \ifpdf
+    % For pdfTeX and LuaTeX <= 0.80
+    \dopdfimage{#1}{#2}{#3}%
+  \else
+    \ifx\XeTeXrevision\thisisundefined
+      % For epsf.tex
+      % \epsfbox itself resets \epsf?size at each figure.
+      \setbox0 = \hbox{\ignorespaces #2}%
+        \ifdim\wd0 > 0pt \epsfxsize=#2\relax \fi
+      \setbox0 = \hbox{\ignorespaces #3}%
+        \ifdim\wd0 > 0pt \epsfysize=#3\relax \fi
+      \epsfbox{#1.eps}%
+    \else
+      % For XeTeX
+      \doxeteximage{#1}{#2}{#3}%
+    \fi
+  \fi
+  %
+  \ifimagevmode
+    \medskip  % space after a standalone image
+  \fi
+  \ifx\centersub\centerV \egroup \fi
+\endgroup}
+
+
+% @float FLOATTYPE,LABEL,LOC ... @end float for displayed figures, tables,
+% etc.  We don't actually implement floating yet, we always include the
+% float "here".  But it seemed the best name for the future.
+%
+\envparseargdef\float{\eatcommaspace\eatcommaspace\dofloat#1, , ,\finish}
+
+% There may be a space before second and/or third parameter; delete it.
+\def\eatcommaspace#1, {#1,}
+
+% #1 is the optional FLOATTYPE, the text label for this float, typically
+% "Figure", "Table", "Example", etc.  Can't contain commas.  If omitted,
+% this float will not be numbered and cannot be referred to.
+%
+% #2 is the optional xref label.  Also must be present for the float to
+% be referable.
+%
+% #3 is the optional positioning argument; for now, it is ignored.  It
+% will somehow specify the positions allowed to float to (here, top, bottom).
+%
+% We keep a separate counter for each FLOATTYPE, which we reset at each
+% chapter-level command.
+\let\resetallfloatnos=\empty
+%
+\def\dofloat#1,#2,#3,#4\finish{%
+  \let\thiscaption=\empty
+  \let\thisshortcaption=\empty
+  %
+  % don't lose footnotes inside @float.
+  %
+  % BEWARE: when the floats start float, we have to issue warning whenever an
+  % insert appears inside a float which could possibly float. --kasal, 26may04
+  %
+  \startsavinginserts
+  %
+  % We can't be used inside a paragraph.
+  \par
+  %
+  \vtop\bgroup
+    \def\floattype{#1}%
+    \def\floatlabel{#2}%
+    \def\floatloc{#3}% we do nothing with this yet.
+    %
+    \ifx\floattype\empty
+      \let\safefloattype=\empty
+    \else
+      {%
+        % the floattype might have accents or other special characters,
+        % but we need to use it in a control sequence name.
+        \indexnofonts
+        \turnoffactive
+        \xdef\safefloattype{\floattype}%
+      }%
+    \fi
+    %
+    % If label is given but no type, we handle that as the empty type.
+    \ifx\floatlabel\empty \else
+      % We want each FLOATTYPE to be numbered separately (Figure 1,
+      % Table 1, Figure 2, ...).  (And if no label, no number.)
+      %
+      \expandafter\getfloatno\csname\safefloattype floatno\endcsname
+      \global\advance\floatno by 1
+      %
+      {%
+        % This magic value for \currentsection is output by \setref as the
+        % XREFLABEL-title value.  \xrefX uses it to distinguish float
+        % labels (which have a completely different output format) from
+        % node and anchor labels.  And \xrdef uses it to construct the
+        % lists of floats.
+        %
+        \edef\currentsection{\floatmagic=\safefloattype}%
+        \setref{\floatlabel}{Yfloat}%
+      }%
+    \fi
+    %
+    % start with \parskip glue, I guess.
+    \vskip\parskip
+    %
+    % Don't suppress indentation if a float happens to start a section.
+    \restorefirstparagraphindent
+}
+
+% we have these possibilities:
+% @float Foo,lbl & @caption{Cap}: Foo 1.1: Cap
+% @float Foo,lbl & no caption:    Foo 1.1
+% @float Foo & @caption{Cap}:     Foo: Cap
+% @float Foo & no caption:        Foo
+% @float ,lbl & Caption{Cap}:     1.1: Cap
+% @float ,lbl & no caption:       1.1
+% @float & @caption{Cap}:         Cap
+% @float & no caption:
+%
+\def\Efloat{%
+    \let\floatident = \empty
+    %
+    % In all cases, if we have a float type, it comes first.
+    \ifx\floattype\empty \else \def\floatident{\floattype}\fi
+    %
+    % If we have an xref label, the number comes next.
+    \ifx\floatlabel\empty \else
+      \ifx\floattype\empty \else % if also had float type, need tie first.
+        \appendtomacro\floatident{\tie}%
+      \fi
+      % the number.
+      \appendtomacro\floatident{\chaplevelprefix\the\floatno}%
+    \fi
+    %
+    % Start the printed caption with what we've constructed in
+    % \floatident, but keep it separate; we need \floatident again.
+    \let\captionline = \floatident
+    %
+    \ifx\thiscaption\empty \else
+      \ifx\floatident\empty \else
+        \appendtomacro\captionline{: }% had ident, so need a colon between
+      \fi
+      %
+      % caption text.
+      \appendtomacro\captionline{\scanexp\thiscaption}%
+    \fi
+    %
+    % If we have anything to print, print it, with space before.
+    % Eventually this needs to become an \insert.
+    \ifx\captionline\empty \else
+      \vskip.5\parskip
+      \captionline
+      %
+      % Space below caption.
+      \vskip\parskip
+    \fi
+    %
+    % If have an xref label, write the list of floats info.  Do this
+    % after the caption, to avoid chance of it being a breakpoint.
+    \ifx\floatlabel\empty \else
+      % Write the text that goes in the lof to the aux file as
+      % \floatlabel-lof.  Besides \floatident, we include the short
+      % caption if specified, else the full caption if specified, else nothing.
+      {%
+        \requireauxfile
+        \atdummies
+        %
+        \ifx\thisshortcaption\empty
+          \def\gtemp{\thiscaption}%
+        \else
+          \def\gtemp{\thisshortcaption}%
+        \fi
+        \immediate\write\auxfile{@xrdef{\floatlabel-lof}{\floatident
+          \ifx\gtemp\empty \else : \gtemp \fi}}%
+      }%
+    \fi
+  \egroup  % end of \vtop
+  %
+  \checkinserts
+}
+
+% Append the tokens #2 to the definition of macro #1, not expanding either.
+%
+\def\appendtomacro#1#2{%
+  \expandafter\def\expandafter#1\expandafter{#1#2}%
+}
+
+% @caption, @shortcaption
+%
+\def\caption{\docaption\thiscaption}
+\def\shortcaption{\docaption\thisshortcaption}
+\def\docaption{\checkenv\float \bgroup\scanargctxt\defcaption}
+\def\defcaption#1#2{\egroup \def#1{#2}}
+
+% The parameter is the control sequence identifying the counter we are
+% going to use.  Create it if it doesn't exist and assign it to \floatno.
+\def\getfloatno#1{%
+  \ifx#1\relax
+      % Haven't seen this figure type before.
+      \csname newcount\endcsname #1%
+      %
+      % Remember to reset this floatno at the next chap.
+      \expandafter\gdef\expandafter\resetallfloatnos
+        \expandafter{\resetallfloatnos #1=0 }%
+  \fi
+  \let\floatno#1%
+}
+
+% \setref calls this to get the XREFLABEL-snt value.  We want an @xref
+% to the FLOATLABEL to expand to "Figure 3.1".  We call \setref when we
+% first read the @float command.
+%
+\def\Yfloat{\floattype@tie \chaplevelprefix\the\floatno}%
+
+% Magic string used for the XREFLABEL-title value, so \xrefX can
+% distinguish floats from other xref types.
+\def\floatmagic{!!float!!}
+
+% #1 is the control sequence we are passed; we expand into a conditional
+% which is true if #1 represents a float ref.  That is, the magic
+% \currentsection value which we \setref above.
+%
+\def\iffloat#1{\expandafter\doiffloat#1==\finish}
+%
+% #1 is (maybe) the \floatmagic string.  If so, #2 will be the
+% (safe) float type for this float.  We set \iffloattype to #2.
+%
+\def\doiffloat#1=#2=#3\finish{%
+  \def\temp{#1}%
+  \def\iffloattype{#2}%
+  \ifx\temp\floatmagic
+}
+
+% @listoffloats FLOATTYPE - print a list of floats like a table of contents.
+%
+\parseargdef\listoffloats{%
+  \def\floattype{#1}% floattype
+  {%
+    % the floattype might have accents or other special characters,
+    % but we need to use it in a control sequence name.
+    \indexnofonts
+    \turnoffactive
+    \xdef\safefloattype{\floattype}%
+  }%
+  %
+  % \xrdef saves the floats as a \do-list in \floatlistSAFEFLOATTYPE.
+  \expandafter\ifx\csname floatlist\safefloattype\endcsname \relax
+    \ifhavexrefs
+      % if the user said @listoffloats foo but never @float foo.
+      \message{\linenumber No `\safefloattype' floats to list.}%
+    \fi
+  \else
+    \begingroup
+      \leftskip=\tocindent  % indent these entries like a toc
+      \let\do=\listoffloatsdo
+      \csname floatlist\safefloattype\endcsname
+    \endgroup
+  \fi
+}
+
+% This is called on each entry in a list of floats.  We're passed the
+% xref label, in the form LABEL-title, which is how we save it in the
+% aux file.  We strip off the -title and look up \XRLABEL-lof, which
+% has the text we're supposed to typeset here.
+%
+% Figures without xref labels will not be included in the list (since
+% they won't appear in the aux file).
+%
+\def\listoffloatsdo#1{\listoffloatsdoentry#1\finish}
+\def\listoffloatsdoentry#1-title\finish{{%
+  % Can't fully expand XR#1-lof because it can contain anything.  Just
+  % pass the control sequence.  On the other hand, XR#1-pg is just the
+  % page number, and we want to fully expand that so we can get a link
+  % in pdf output.
+  \toksA = \expandafter{\csname XR#1-lof\endcsname}%
+  %
+  % use the same \entry macro we use to generate the TOC and index.
+  \edef\writeentry{\noexpand\entry{\the\toksA}{\csname XR#1-pg\endcsname}}%
+  \writeentry
+}}
+
+
+\message{localization,}
+
+% For single-language documents, @documentlanguage is usually given very
+% early, just after @documentencoding.  Single argument is the language
+% (de) or locale (de_DE) abbreviation.
+%
+{
+  \catcode`\_ = \active
+  \globaldefs=1
+\parseargdef\documentlanguage{%
+  \tex % read txi-??.tex file in plain TeX.
+    % Read the file by the name they passed if it exists.
+    \let_ = \normalunderscore  % normal _ character for filename test
+    \openin 1 txi-#1.tex
+    \ifeof 1
+      \documentlanguagetrywithoutunderscore #1_\finish
+    \else
+      \globaldefs = 1  % everything in the txi-LL files needs to persist
+      \input txi-#1.tex
+    \fi
+    \closein 1
+  \endgroup % end raw TeX
+}
+%
+% If they passed de_DE, and txi-de_DE.tex doesn't exist,
+% try txi-de.tex.
+%
+\gdef\documentlanguagetrywithoutunderscore#1_#2\finish{%
+  \openin 1 txi-#1.tex
+  \ifeof 1
+    \errhelp = \nolanghelp
+    \errmessage{Cannot read language file txi-#1.tex}%
+  \else
+    \globaldefs = 1  % everything in the txi-LL files needs to persist
+    \input txi-#1.tex
+  \fi
+  \closein 1
+}
+}% end of special _ catcode
+%
+\newhelp\nolanghelp{The given language definition file cannot be found or
+is empty.  Maybe you need to install it?  Putting it in the current
+directory should work if nowhere else does.}
+
+% This macro is called from txi-??.tex files; the first argument is the
+% \language name to set (without the "\lang@" prefix), the second and
+% third args are \{left,right}hyphenmin.
+%
+% The language names to pass are determined when the format is built.
+% See the etex.log file created at that time, e.g.,
+% /usr/local/texlive/2008/texmf-var/web2c/pdftex/etex.log.
+%
+% With TeX Live 2008, etex now includes hyphenation patterns for all
+% available languages.  This means we can support hyphenation in
+% Texinfo, at least to some extent.  (This still doesn't solve the
+% accented characters problem.)
+%
+\catcode`@=11
+\def\txisetlanguage#1#2#3{%
+  % do not set the language if the name is undefined in the current TeX.
+  \expandafter\ifx\csname lang@#1\endcsname \relax
+    \message{no patterns for #1}%
+  \else
+    \global\language = \csname lang@#1\endcsname
+  \fi
+  % but there is no harm in adjusting the hyphenmin values regardless.
+  \global\lefthyphenmin = #2\relax
+  \global\righthyphenmin = #3\relax
+}
+
+% XeTeX and LuaTeX can handle Unicode natively.
+% Their default I/O uses UTF-8 sequences instead of a byte-wise operation.
+% Other TeX engines' I/O (pdfTeX, etc.) is byte-wise.
+%
+\newif\iftxinativeunicodecapable
+\newif\iftxiusebytewiseio
+
+\ifx\XeTeXrevision\thisisundefined
+  \ifx\luatexversion\thisisundefined
+    \txinativeunicodecapablefalse
+    \txiusebytewiseiotrue
+  \else
+    \txinativeunicodecapabletrue
+    \txiusebytewiseiofalse
+  \fi
+\else
+  \txinativeunicodecapabletrue
+  \txiusebytewiseiofalse
+\fi
+
+% Set I/O by bytes instead of UTF-8 sequence for XeTeX and LuaTex
+% for non-UTF-8 (byte-wise) encodings.
+%
+\def\setbytewiseio{%
+  \ifx\XeTeXrevision\thisisundefined
+  \else
+    \XeTeXdefaultencoding "bytes"  % For subsequent files to be read
+    \XeTeXinputencoding "bytes"  % For document root file
+    % Unfortunately, there seems to be no corresponding XeTeX command for
+    % output encoding.  This is a problem for auxiliary index and TOC files.
+    % The only solution would be perhaps to write out @U{...} sequences in
+    % place of non-ASCII characters.
+  \fi
+
+  \ifx\luatexversion\thisisundefined
+  \else
+    \directlua{
+    local utf8_char, byte, gsub = unicode.utf8.char, string.byte, string.gsub
+    local function convert_char (char)
+      return utf8_char(byte(char))
+    end
+
+    local function convert_line (line)
+      return gsub(line, ".", convert_char)
+    end
+
+    callback.register("process_input_buffer", convert_line)
+
+    local function convert_line_out (line)
+      local line_out = ""
+      for c in string.utfvalues(line) do
+         line_out = line_out .. string.char(c)
+      end
+      return line_out
+    end
+
+    callback.register("process_output_buffer", convert_line_out)
+    }
+  \fi
+
+  \txiusebytewiseiotrue
+}
+
+
+% Helpers for encodings.
+% Set the catcode of characters 128 through 255 to the specified number.
+%
+\def\setnonasciicharscatcode#1{%
+   \count255=128
+   \loop\ifnum\count255<256
+      \global\catcode\count255=#1\relax
+      \advance\count255 by 1
+   \repeat
+}
+
+\def\setnonasciicharscatcodenonglobal#1{%
+   \count255=128
+   \loop\ifnum\count255<256
+      \catcode\count255=#1\relax
+      \advance\count255 by 1
+   \repeat
+}
+
+% @documentencoding sets the definition of non-ASCII characters
+% according to the specified encoding.
+%
+\def\documentencoding{\parseargusing\filenamecatcodes\documentencodingzzz}
+\def\documentencodingzzz#1{%
+  %
+  % Encoding being declared for the document.
+  \def\declaredencoding{\csname #1.enc\endcsname}%
+  %
+  % Supported encodings: names converted to tokens in order to be able
+  % to compare them with \ifx.
+  \def\ascii{\csname US-ASCII.enc\endcsname}%
+  \def\latnine{\csname ISO-8859-15.enc\endcsname}%
+  \def\latone{\csname ISO-8859-1.enc\endcsname}%
+  \def\lattwo{\csname ISO-8859-2.enc\endcsname}%
+  \def\utfeight{\csname UTF-8.enc\endcsname}%
+  %
+  \ifx \declaredencoding \ascii
+     \asciichardefs
+  %
+  \else \ifx \declaredencoding \lattwo
+     \iftxinativeunicodecapable
+       \setbytewiseio
+     \fi
+     \setnonasciicharscatcode\active
+     \lattwochardefs
+  %
+  \else \ifx \declaredencoding \latone
+     \iftxinativeunicodecapable
+       \setbytewiseio
+     \fi
+     \setnonasciicharscatcode\active
+     \latonechardefs
+  %
+  \else \ifx \declaredencoding \latnine
+     \iftxinativeunicodecapable
+       \setbytewiseio
+     \fi
+     \setnonasciicharscatcode\active
+     \latninechardefs
+  %
+  \else \ifx \declaredencoding \utfeight
+     \iftxinativeunicodecapable
+       % For native Unicode handling (XeTeX and LuaTeX)
+       \nativeunicodechardefs
+     \else
+       % For treating UTF-8 as byte sequences (TeX, eTeX and pdfTeX)
+       \setnonasciicharscatcode\active
+       % since we already invoked \utfeightchardefs at the top level
+       % (below), do not re-invoke it, otherwise our check for duplicated
+       % definitions gets triggered.  Making non-ascii chars active is
+       % sufficient.
+     \fi
+  %
+  \else
+    \message{Ignoring unknown document encoding: #1.}%
+  %
+  \fi % utfeight
+  \fi % latnine
+  \fi % latone
+  \fi % lattwo
+  \fi % ascii
+  %
+  \ifx\XeTeXrevision\thisisundefined
+  \else
+    \ifx \declaredencoding \utfeight
+    \else
+      \ifx \declaredencoding \ascii
+      \else
+        \message{Warning: XeTeX with non-UTF-8 encodings cannot handle %
+        non-ASCII characters in auxiliary files.}%
+      \fi
+    \fi
+  \fi
+}
+
+% emacs-page
+% A message to be logged when using a character that isn't available
+% the default font encoding (OT1).
+%
+\def\missingcharmsg#1{\message{Character missing, sorry: #1.}}
+
+% Take account of \c (plain) vs. \, (Texinfo) difference.
+\def\cedilla#1{\ifx\c\ptexc\c{#1}\else\,{#1}\fi}
+
+% First, make active non-ASCII characters in order for them to be
+% correctly categorized when TeX reads the replacement text of
+% macros containing the character definitions.
+\setnonasciicharscatcode\active
+%
+
+\def\gdefchar#1#2{%
+\gdef#1{%
+   \ifpassthroughchars
+     \string#1%
+   \else
+     #2%
+   \fi
+}}
+
+% Latin1 (ISO-8859-1) character definitions.
+\def\latonechardefs{%
+  \gdefchar^^a0{\tie}
+  \gdefchar^^a1{\exclamdown}
+  \gdefchar^^a2{{\tcfont \char162}} % cent
+  \gdefchar^^a3{\pounds{}}
+  \gdefchar^^a4{{\tcfont \char164}} % currency
+  \gdefchar^^a5{{\tcfont \char165}} % yen
+  \gdefchar^^a6{{\tcfont \char166}} % broken bar
+  \gdefchar^^a7{\S}
+  \gdefchar^^a8{\"{}}
+  \gdefchar^^a9{\copyright{}}
+  \gdefchar^^aa{\ordf}
+  \gdefchar^^ab{\guillemetleft{}}
+  \gdefchar^^ac{\ensuremath\lnot}
+  \gdefchar^^ad{\-}
+  \gdefchar^^ae{\registeredsymbol{}}
+  \gdefchar^^af{\={}}
+  %
+  \gdefchar^^b0{\textdegree}
+  \gdefchar^^b1{$\pm$}
+  \gdefchar^^b2{$^2$}
+  \gdefchar^^b3{$^3$}
+  \gdefchar^^b4{\'{}}
+  \gdefchar^^b5{$\mu$}
+  \gdefchar^^b6{\P}
+  \gdefchar^^b7{\ensuremath\cdot}
+  \gdefchar^^b8{\cedilla\ }
+  \gdefchar^^b9{$^1$}
+  \gdefchar^^ba{\ordm}
+  \gdefchar^^bb{\guillemetright{}}
+  \gdefchar^^bc{$1\over4$}
+  \gdefchar^^bd{$1\over2$}
+  \gdefchar^^be{$3\over4$}
+  \gdefchar^^bf{\questiondown}
+  %
+  \gdefchar^^c0{\`A}
+  \gdefchar^^c1{\'A}
+  \gdefchar^^c2{\^A}
+  \gdefchar^^c3{\~A}
+  \gdefchar^^c4{\"A}
+  \gdefchar^^c5{\ringaccent A}
+  \gdefchar^^c6{\AE}
+  \gdefchar^^c7{\cedilla C}
+  \gdefchar^^c8{\`E}
+  \gdefchar^^c9{\'E}
+  \gdefchar^^ca{\^E}
+  \gdefchar^^cb{\"E}
+  \gdefchar^^cc{\`I}
+  \gdefchar^^cd{\'I}
+  \gdefchar^^ce{\^I}
+  \gdefchar^^cf{\"I}
+  %
+  \gdefchar^^d0{\DH}
+  \gdefchar^^d1{\~N}
+  \gdefchar^^d2{\`O}
+  \gdefchar^^d3{\'O}
+  \gdefchar^^d4{\^O}
+  \gdefchar^^d5{\~O}
+  \gdefchar^^d6{\"O}
+  \gdefchar^^d7{$\times$}
+  \gdefchar^^d8{\O}
+  \gdefchar^^d9{\`U}
+  \gdefchar^^da{\'U}
+  \gdefchar^^db{\^U}
+  \gdefchar^^dc{\"U}
+  \gdefchar^^dd{\'Y}
+  \gdefchar^^de{\TH}
+  \gdefchar^^df{\ss}
+  %
+  \gdefchar^^e0{\`a}
+  \gdefchar^^e1{\'a}
+  \gdefchar^^e2{\^a}
+  \gdefchar^^e3{\~a}
+  \gdefchar^^e4{\"a}
+  \gdefchar^^e5{\ringaccent a}
+  \gdefchar^^e6{\ae}
+  \gdefchar^^e7{\cedilla c}
+  \gdefchar^^e8{\`e}
+  \gdefchar^^e9{\'e}
+  \gdefchar^^ea{\^e}
+  \gdefchar^^eb{\"e}
+  \gdefchar^^ec{\`{\dotless i}}
+  \gdefchar^^ed{\'{\dotless i}}
+  \gdefchar^^ee{\^{\dotless i}}
+  \gdefchar^^ef{\"{\dotless i}}
+  %
+  \gdefchar^^f0{\dh}
+  \gdefchar^^f1{\~n}
+  \gdefchar^^f2{\`o}
+  \gdefchar^^f3{\'o}
+  \gdefchar^^f4{\^o}
+  \gdefchar^^f5{\~o}
+  \gdefchar^^f6{\"o}
+  \gdefchar^^f7{$\div$}
+  \gdefchar^^f8{\o}
+  \gdefchar^^f9{\`u}
+  \gdefchar^^fa{\'u}
+  \gdefchar^^fb{\^u}
+  \gdefchar^^fc{\"u}
+  \gdefchar^^fd{\'y}
+  \gdefchar^^fe{\th}
+  \gdefchar^^ff{\"y}
+}
+
+% Latin9 (ISO-8859-15) encoding character definitions.
+\def\latninechardefs{%
+  % Encoding is almost identical to Latin1.
+  \latonechardefs
+  %
+  \gdefchar^^a4{\euro{}}
+  \gdefchar^^a6{\v S}
+  \gdefchar^^a8{\v s}
+  \gdefchar^^b4{\v Z}
+  \gdefchar^^b8{\v z}
+  \gdefchar^^bc{\OE}
+  \gdefchar^^bd{\oe}
+  \gdefchar^^be{\"Y}
+}
+
+% Latin2 (ISO-8859-2) character definitions.
+\def\lattwochardefs{%
+  \gdefchar^^a0{\tie}
+  \gdefchar^^a1{\ogonek{A}}
+  \gdefchar^^a2{\u{}}
+  \gdefchar^^a3{\L}
+  \gdefchar^^a4{\missingcharmsg{CURRENCY SIGN}}
+  \gdefchar^^a5{\v L}
+  \gdefchar^^a6{\'S}
+  \gdefchar^^a7{\S}
+  \gdefchar^^a8{\"{}}
+  \gdefchar^^a9{\v S}
+  \gdefchar^^aa{\cedilla S}
+  \gdefchar^^ab{\v T}
+  \gdefchar^^ac{\'Z}
+  \gdefchar^^ad{\-}
+  \gdefchar^^ae{\v Z}
+  \gdefchar^^af{\dotaccent Z}
+  %
+  \gdefchar^^b0{\textdegree{}}
+  \gdefchar^^b1{\ogonek{a}}
+  \gdefchar^^b2{\ogonek{ }}
+  \gdefchar^^b3{\l}
+  \gdefchar^^b4{\'{}}
+  \gdefchar^^b5{\v l}
+  \gdefchar^^b6{\'s}
+  \gdefchar^^b7{\v{}}
+  \gdefchar^^b8{\cedilla\ }
+  \gdefchar^^b9{\v s}
+  \gdefchar^^ba{\cedilla s}
+  \gdefchar^^bb{\v t}
+  \gdefchar^^bc{\'z}
+  \gdefchar^^bd{\H{}}
+  \gdefchar^^be{\v z}
+  \gdefchar^^bf{\dotaccent z}
+  %
+  \gdefchar^^c0{\'R}
+  \gdefchar^^c1{\'A}
+  \gdefchar^^c2{\^A}
+  \gdefchar^^c3{\u A}
+  \gdefchar^^c4{\"A}
+  \gdefchar^^c5{\'L}
+  \gdefchar^^c6{\'C}
+  \gdefchar^^c7{\cedilla C}
+  \gdefchar^^c8{\v C}
+  \gdefchar^^c9{\'E}
+  \gdefchar^^ca{\ogonek{E}}
+  \gdefchar^^cb{\"E}
+  \gdefchar^^cc{\v E}
+  \gdefchar^^cd{\'I}
+  \gdefchar^^ce{\^I}
+  \gdefchar^^cf{\v D}
+  %
+  \gdefchar^^d0{\DH}
+  \gdefchar^^d1{\'N}
+  \gdefchar^^d2{\v N}
+  \gdefchar^^d3{\'O}
+  \gdefchar^^d4{\^O}
+  \gdefchar^^d5{\H O}
+  \gdefchar^^d6{\"O}
+  \gdefchar^^d7{$\times$}
+  \gdefchar^^d8{\v R}
+  \gdefchar^^d9{\ringaccent U}
+  \gdefchar^^da{\'U}
+  \gdefchar^^db{\H U}
+  \gdefchar^^dc{\"U}
+  \gdefchar^^dd{\'Y}
+  \gdefchar^^de{\cedilla T}
+  \gdefchar^^df{\ss}
+  %
+  \gdefchar^^e0{\'r}
+  \gdefchar^^e1{\'a}
+  \gdefchar^^e2{\^a}
+  \gdefchar^^e3{\u a}
+  \gdefchar^^e4{\"a}
+  \gdefchar^^e5{\'l}
+  \gdefchar^^e6{\'c}
+  \gdefchar^^e7{\cedilla c}
+  \gdefchar^^e8{\v c}
+  \gdefchar^^e9{\'e}
+  \gdefchar^^ea{\ogonek{e}}
+  \gdefchar^^eb{\"e}
+  \gdefchar^^ec{\v e}
+  \gdefchar^^ed{\'{\dotless{i}}}
+  \gdefchar^^ee{\^{\dotless{i}}}
+  \gdefchar^^ef{\v d}
+  %
+  \gdefchar^^f0{\dh}
+  \gdefchar^^f1{\'n}
+  \gdefchar^^f2{\v n}
+  \gdefchar^^f3{\'o}
+  \gdefchar^^f4{\^o}
+  \gdefchar^^f5{\H o}
+  \gdefchar^^f6{\"o}
+  \gdefchar^^f7{$\div$}
+  \gdefchar^^f8{\v r}
+  \gdefchar^^f9{\ringaccent u}
+  \gdefchar^^fa{\'u}
+  \gdefchar^^fb{\H u}
+  \gdefchar^^fc{\"u}
+  \gdefchar^^fd{\'y}
+  \gdefchar^^fe{\cedilla t}
+  \gdefchar^^ff{\dotaccent{}}
+}
+
+% UTF-8 character definitions.
+%
+% This code to support UTF-8 is based on LaTeX's utf8.def, with some
+% changes for Texinfo conventions.  It is included here under the GPL by
+% permission from Frank Mittelbach and the LaTeX team.
+%
+\newcount\countUTFx
+\newcount\countUTFy
+\newcount\countUTFz
+
+\gdef\UTFviiiTwoOctets#1#2{\expandafter
+   \UTFviiiDefined\csname u8:#1\string #2\endcsname}
+%
+\gdef\UTFviiiThreeOctets#1#2#3{\expandafter
+   \UTFviiiDefined\csname u8:#1\string #2\string #3\endcsname}
+%
+\gdef\UTFviiiFourOctets#1#2#3#4{\expandafter
+   \UTFviiiDefined\csname u8:#1\string #2\string #3\string #4\endcsname}
+
+\gdef\UTFviiiDefined#1{%
+  \ifx #1\relax
+    \message{\linenumber Unicode char \string #1 not defined for Texinfo}%
+  \else
+    \expandafter #1%
+  \fi
+}
+
+% Give non-ASCII bytes the active definitions for processing UTF-8 sequences
+\begingroup
+  \catcode`\~13
+  \catcode`\$12
+  \catcode`\"12
+
+  % Loop from \countUTFx to \countUTFy, performing \UTFviiiTmp
+  % substituting ~ and $ with a character token of that value.
+  \def\UTFviiiLoop{%
+    \global\catcode\countUTFx\active
+    \uccode`\~\countUTFx
+    \uccode`\$\countUTFx
+    \uppercase\expandafter{\UTFviiiTmp}%
+    \advance\countUTFx by 1
+    \ifnum\countUTFx < \countUTFy
+      \expandafter\UTFviiiLoop
+    \fi}
+
+  % For bytes other than the first in a UTF-8 sequence.  Not expected to
+  % be expanded except when writing to auxiliary files.
+  \countUTFx = "80
+  \countUTFy = "C2
+  \def\UTFviiiTmp{%
+    \gdef~{%
+        \ifpassthroughchars $\fi}}%
+  \UTFviiiLoop
+
+  \countUTFx = "C2
+  \countUTFy = "E0
+  \def\UTFviiiTmp{%
+    \gdef~{%
+        \ifpassthroughchars $%
+        \else\expandafter\UTFviiiTwoOctets\expandafter$\fi}}%
+  \UTFviiiLoop
+
+  \countUTFx = "E0
+  \countUTFy = "F0
+  \def\UTFviiiTmp{%
+    \gdef~{%
+        \ifpassthroughchars $%
+        \else\expandafter\UTFviiiThreeOctets\expandafter$\fi}}%
+  \UTFviiiLoop
+
+  \countUTFx = "F0
+  \countUTFy = "F4
+  \def\UTFviiiTmp{%
+    \gdef~{%
+        \ifpassthroughchars $%
+        \else\expandafter\UTFviiiFourOctets\expandafter$\fi
+        }}%
+  \UTFviiiLoop
+\endgroup
+
+\def\globallet{\global\let} % save some \expandafter's below
+
+% @U{xxxx} to produce U+xxxx, if we support it.
+\def\U#1{%
+  \expandafter\ifx\csname uni:#1\endcsname \relax
+    \iftxinativeunicodecapable
+      % All Unicode characters can be used if native Unicode handling is
+      % active.  However, if the font does not have the glyph,
+      % letters are missing.
+      \begingroup
+        \uccode`\.="#1\relax
+        \uppercase{.}
+      \endgroup
+    \else
+      \errhelp = \EMsimple
+      \errmessage{Unicode character U+#1 not supported, sorry}%
+    \fi
+  \else
+    \csname uni:#1\endcsname
+  \fi
+}
+
+% These macros are used here to construct the name of a control
+% sequence to be defined.
+\def\UTFviiiTwoOctetsName#1#2{%
+  \csname u8:#1\string #2\endcsname}%
+\def\UTFviiiThreeOctetsName#1#2#3{%
+  \csname u8:#1\string #2\string #3\endcsname}%
+\def\UTFviiiFourOctetsName#1#2#3#4{%
+  \csname u8:#1\string #2\string #3\string #4\endcsname}%
+
+% For UTF-8 byte sequences (TeX, e-TeX and pdfTeX),
+% provide a definition macro to replace a Unicode character;
+% this gets used by the @U command
+%
+\begingroup
+  \catcode`\"=12
+  \catcode`\<=12
+  \catcode`\.=12
+  \catcode`\,=12
+  \catcode`\;=12
+  \catcode`\!=12
+  \catcode`\~=13
+  \gdef\DeclareUnicodeCharacterUTFviii#1#2{%
+    \countUTFz = "#1\relax
+    \begingroup
+      \parseXMLCharref
+
+      % Give \u8:... its definition.  The sequence of seven \expandafter's
+      % expands after the \gdef three times, e.g.
+      %
+      % 1.  \UTFviiTwoOctetsName B1 B2
+      % 2.  \csname u8:B1 \string B2 \endcsname
+      % 3.  \u8: B1 B2  (a single control sequence token)
+      %
+      \expandafter\expandafter
+      \expandafter\expandafter
+      \expandafter\expandafter
+      \expandafter\gdef       \UTFviiiTmp{#2}%
+      %
+      \expandafter\ifx\csname uni:#1\endcsname \relax \else
+       \message{Internal error, already defined: #1}%
+      \fi
+      %
+      % define an additional control sequence for this code point.
+      \expandafter\globallet\csname uni:#1\endcsname \UTFviiiTmp
+    \endgroup}
+  %
+  % Given the value in \countUTFz as a Unicode code point, set \UTFviiiTmp
+  % to the corresponding UTF-8 sequence.
+  \gdef\parseXMLCharref{%
+    \ifnum\countUTFz < "A0\relax
+      \errhelp = \EMsimple
+      \errmessage{Cannot define Unicode char value < 00A0}%
+    \else\ifnum\countUTFz < "800\relax
+      \parseUTFviiiA,%
+      \parseUTFviiiB C\UTFviiiTwoOctetsName.,%
+    \else\ifnum\countUTFz < "10000\relax
+      \parseUTFviiiA;%
+      \parseUTFviiiA,%
+      \parseUTFviiiB E\UTFviiiThreeOctetsName.{,;}%
+    \else
+      \parseUTFviiiA;%
+      \parseUTFviiiA,%
+      \parseUTFviiiA!%
+      \parseUTFviiiB F\UTFviiiFourOctetsName.{!,;}%
+    \fi\fi\fi
+  }
+
+  % Extract a byte from the end of the UTF-8 representation of \countUTFx.
+  % It must be a non-initial byte in the sequence.
+  % Change \uccode of #1 for it to be used in \parseUTFviiiB as one
+  % of the bytes.
+  \gdef\parseUTFviiiA#1{%
+    \countUTFx = \countUTFz
+    \divide\countUTFz by 64
+    \countUTFy = \countUTFz  % Save to be the future value of \countUTFz.
+    \multiply\countUTFz by 64
+
+    % \countUTFz is now \countUTFx with the last 5 bits cleared.  Subtract
+    % in order to get the last five bits.
+    \advance\countUTFx by -\countUTFz
+
+    % Convert this to the byte in the UTF-8 sequence.
+    \advance\countUTFx by 128
+    \uccode `#1\countUTFx
+    \countUTFz = \countUTFy}
+
+  % Used to put a UTF-8 byte sequence into \UTFviiiTmp
+  % #1 is the increment for \countUTFz to yield a the first byte of the UTF-8
+  %    sequence.
+  % #2 is one of the \UTFviii*OctetsName macros.
+  % #3 is always a full stop (.)
+  % #4 is a template for the other bytes in the sequence.  The values for these
+  %    bytes is substituted in here with \uppercase using the \uccode's.
+  \gdef\parseUTFviiiB#1#2#3#4{%
+    \advance\countUTFz by "#10\relax
+    \uccode `#3\countUTFz
+    \uppercase{\gdef\UTFviiiTmp{#2#3#4}}}
+\endgroup
+
+% For native Unicode handling (XeTeX and LuaTeX),
+% provide a definition macro that sets a catcode to `other' non-globally
+%
+\def\DeclareUnicodeCharacterNativeOther#1#2{%
+  \catcode"#1=\other
+}
+
+% https://en.wikipedia.org/wiki/Plane_(Unicode)#Basic_M
+% U+0000..U+007F = https://en.wikipedia.org/wiki/Basic_Latin_(Unicode_block)
+% U+0080..U+00FF = https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)
+% U+0100..U+017F = https://en.wikipedia.org/wiki/Latin_Extended-A
+% U+0180..U+024F = https://en.wikipedia.org/wiki/Latin_Extended-B
+%
+% Many of our renditions are less than wonderful, and all the missing
+% characters are available somewhere.  Loading the necessary fonts
+% awaits user request.  We can't truly support Unicode without
+% reimplementing everything that's been done in LaTeX for many years,
+% plus probably using luatex or xetex, and who knows what else.
+% We won't be doing that here in this simple file.  But we can try to at
+% least make most of the characters not bomb out.
+%
+\def\unicodechardefs{%
+  \DeclareUnicodeCharacter{00A0}{\tie}%
+  \DeclareUnicodeCharacter{00A1}{\exclamdown}%
+  \DeclareUnicodeCharacter{00A2}{{\tcfont \char162}}% 0242=cent
+  \DeclareUnicodeCharacter{00A3}{\pounds{}}%
+  \DeclareUnicodeCharacter{00A4}{{\tcfont \char164}}% 0244=currency
+  \DeclareUnicodeCharacter{00A5}{{\tcfont \char165}}% 0245=yen
+  \DeclareUnicodeCharacter{00A6}{{\tcfont \char166}}% 0246=brokenbar
+  \DeclareUnicodeCharacter{00A7}{\S}%
+  \DeclareUnicodeCharacter{00A8}{\"{ }}%
+  \DeclareUnicodeCharacter{00A9}{\copyright{}}%
+  \DeclareUnicodeCharacter{00AA}{\ordf}%
+  \DeclareUnicodeCharacter{00AB}{\guillemetleft{}}%
+  \DeclareUnicodeCharacter{00AC}{\ensuremath\lnot}%
+  \DeclareUnicodeCharacter{00AD}{\-}%
+  \DeclareUnicodeCharacter{00AE}{\registeredsymbol{}}%
+  \DeclareUnicodeCharacter{00AF}{\={ }}%
+  %
+  \DeclareUnicodeCharacter{00B0}{\ringaccent{ }}%
+  \DeclareUnicodeCharacter{00B1}{\ensuremath\pm}%
+  \DeclareUnicodeCharacter{00B2}{$^2$}%
+  \DeclareUnicodeCharacter{00B3}{$^3$}%
+  \DeclareUnicodeCharacter{00B4}{\'{ }}%
+  \DeclareUnicodeCharacter{00B5}{$\mu$}%
+  \DeclareUnicodeCharacter{00B6}{\P}%
+  \DeclareUnicodeCharacter{00B7}{\ensuremath\cdot}%
+  \DeclareUnicodeCharacter{00B8}{\cedilla{ }}%
+  \DeclareUnicodeCharacter{00B9}{$^1$}%
+  \DeclareUnicodeCharacter{00BA}{\ordm}%
+  \DeclareUnicodeCharacter{00BB}{\guillemetright{}}%
+  \DeclareUnicodeCharacter{00BC}{$1\over4$}%
+  \DeclareUnicodeCharacter{00BD}{$1\over2$}%
+  \DeclareUnicodeCharacter{00BE}{$3\over4$}%
+  \DeclareUnicodeCharacter{00BF}{\questiondown}%
+  %
+  \DeclareUnicodeCharacter{00C0}{\`A}%
+  \DeclareUnicodeCharacter{00C1}{\'A}%
+  \DeclareUnicodeCharacter{00C2}{\^A}%
+  \DeclareUnicodeCharacter{00C3}{\~A}%
+  \DeclareUnicodeCharacter{00C4}{\"A}%
+  \DeclareUnicodeCharacter{00C5}{\AA}%
+  \DeclareUnicodeCharacter{00C6}{\AE}%
+  \DeclareUnicodeCharacter{00C7}{\cedilla{C}}%
+  \DeclareUnicodeCharacter{00C8}{\`E}%
+  \DeclareUnicodeCharacter{00C9}{\'E}%
+  \DeclareUnicodeCharacter{00CA}{\^E}%
+  \DeclareUnicodeCharacter{00CB}{\"E}%
+  \DeclareUnicodeCharacter{00CC}{\`I}%
+  \DeclareUnicodeCharacter{00CD}{\'I}%
+  \DeclareUnicodeCharacter{00CE}{\^I}%
+  \DeclareUnicodeCharacter{00CF}{\"I}%
+  %
+  \DeclareUnicodeCharacter{00D0}{\DH}%
+  \DeclareUnicodeCharacter{00D1}{\~N}%
+  \DeclareUnicodeCharacter{00D2}{\`O}%
+  \DeclareUnicodeCharacter{00D3}{\'O}%
+  \DeclareUnicodeCharacter{00D4}{\^O}%
+  \DeclareUnicodeCharacter{00D5}{\~O}%
+  \DeclareUnicodeCharacter{00D6}{\"O}%
+  \DeclareUnicodeCharacter{00D7}{\ensuremath\times}%
+  \DeclareUnicodeCharacter{00D8}{\O}%
+  \DeclareUnicodeCharacter{00D9}{\`U}%
+  \DeclareUnicodeCharacter{00DA}{\'U}%
+  \DeclareUnicodeCharacter{00DB}{\^U}%
+  \DeclareUnicodeCharacter{00DC}{\"U}%
+  \DeclareUnicodeCharacter{00DD}{\'Y}%
+  \DeclareUnicodeCharacter{00DE}{\TH}%
+  \DeclareUnicodeCharacter{00DF}{\ss}%
+  %
+  \DeclareUnicodeCharacter{00E0}{\`a}%
+  \DeclareUnicodeCharacter{00E1}{\'a}%
+  \DeclareUnicodeCharacter{00E2}{\^a}%
+  \DeclareUnicodeCharacter{00E3}{\~a}%
+  \DeclareUnicodeCharacter{00E4}{\"a}%
+  \DeclareUnicodeCharacter{00E5}{\aa}%
+  \DeclareUnicodeCharacter{00E6}{\ae}%
+  \DeclareUnicodeCharacter{00E7}{\cedilla{c}}%
+  \DeclareUnicodeCharacter{00E8}{\`e}%
+  \DeclareUnicodeCharacter{00E9}{\'e}%
+  \DeclareUnicodeCharacter{00EA}{\^e}%
+  \DeclareUnicodeCharacter{00EB}{\"e}%
+  \DeclareUnicodeCharacter{00EC}{\`{\dotless{i}}}%
+  \DeclareUnicodeCharacter{00ED}{\'{\dotless{i}}}%
+  \DeclareUnicodeCharacter{00EE}{\^{\dotless{i}}}%
+  \DeclareUnicodeCharacter{00EF}{\"{\dotless{i}}}%
+  %
+  \DeclareUnicodeCharacter{00F0}{\dh}%
+  \DeclareUnicodeCharacter{00F1}{\~n}%
+  \DeclareUnicodeCharacter{00F2}{\`o}%
+  \DeclareUnicodeCharacter{00F3}{\'o}%
+  \DeclareUnicodeCharacter{00F4}{\^o}%
+  \DeclareUnicodeCharacter{00F5}{\~o}%
+  \DeclareUnicodeCharacter{00F6}{\"o}%
+  \DeclareUnicodeCharacter{00F7}{\ensuremath\div}%
+  \DeclareUnicodeCharacter{00F8}{\o}%
+  \DeclareUnicodeCharacter{00F9}{\`u}%
+  \DeclareUnicodeCharacter{00FA}{\'u}%
+  \DeclareUnicodeCharacter{00FB}{\^u}%
+  \DeclareUnicodeCharacter{00FC}{\"u}%
+  \DeclareUnicodeCharacter{00FD}{\'y}%
+  \DeclareUnicodeCharacter{00FE}{\th}%
+  \DeclareUnicodeCharacter{00FF}{\"y}%
+  %
+  \DeclareUnicodeCharacter{0100}{\=A}%
+  \DeclareUnicodeCharacter{0101}{\=a}%
+  \DeclareUnicodeCharacter{0102}{\u{A}}%
+  \DeclareUnicodeCharacter{0103}{\u{a}}%
+  \DeclareUnicodeCharacter{0104}{\ogonek{A}}%
+  \DeclareUnicodeCharacter{0105}{\ogonek{a}}%
+  \DeclareUnicodeCharacter{0106}{\'C}%
+  \DeclareUnicodeCharacter{0107}{\'c}%
+  \DeclareUnicodeCharacter{0108}{\^C}%
+  \DeclareUnicodeCharacter{0109}{\^c}%
+  \DeclareUnicodeCharacter{010A}{\dotaccent{C}}%
+  \DeclareUnicodeCharacter{010B}{\dotaccent{c}}%
+  \DeclareUnicodeCharacter{010C}{\v{C}}%
+  \DeclareUnicodeCharacter{010D}{\v{c}}%
+  \DeclareUnicodeCharacter{010E}{\v{D}}%
+  \DeclareUnicodeCharacter{010F}{d'}%
+  %
+  \DeclareUnicodeCharacter{0110}{\DH}%
+  \DeclareUnicodeCharacter{0111}{\dh}%
+  \DeclareUnicodeCharacter{0112}{\=E}%
+  \DeclareUnicodeCharacter{0113}{\=e}%
+  \DeclareUnicodeCharacter{0114}{\u{E}}%
+  \DeclareUnicodeCharacter{0115}{\u{e}}%
+  \DeclareUnicodeCharacter{0116}{\dotaccent{E}}%
+  \DeclareUnicodeCharacter{0117}{\dotaccent{e}}%
+  \DeclareUnicodeCharacter{0118}{\ogonek{E}}%
+  \DeclareUnicodeCharacter{0119}{\ogonek{e}}%
+  \DeclareUnicodeCharacter{011A}{\v{E}}%
+  \DeclareUnicodeCharacter{011B}{\v{e}}%
+  \DeclareUnicodeCharacter{011C}{\^G}%
+  \DeclareUnicodeCharacter{011D}{\^g}%
+  \DeclareUnicodeCharacter{011E}{\u{G}}%
+  \DeclareUnicodeCharacter{011F}{\u{g}}%
+  %
+  \DeclareUnicodeCharacter{0120}{\dotaccent{G}}%
+  \DeclareUnicodeCharacter{0121}{\dotaccent{g}}%
+  \DeclareUnicodeCharacter{0122}{\cedilla{G}}%
+  \DeclareUnicodeCharacter{0123}{\cedilla{g}}%
+  \DeclareUnicodeCharacter{0124}{\^H}%
+  \DeclareUnicodeCharacter{0125}{\^h}%
+  \DeclareUnicodeCharacter{0126}{\missingcharmsg{H WITH STROKE}}%
+  \DeclareUnicodeCharacter{0127}{\missingcharmsg{h WITH STROKE}}%
+  \DeclareUnicodeCharacter{0128}{\~I}%
+  \DeclareUnicodeCharacter{0129}{\~{\dotless{i}}}%
+  \DeclareUnicodeCharacter{012A}{\=I}%
+  \DeclareUnicodeCharacter{012B}{\={\dotless{i}}}%
+  \DeclareUnicodeCharacter{012C}{\u{I}}%
+  \DeclareUnicodeCharacter{012D}{\u{\dotless{i}}}%
+  \DeclareUnicodeCharacter{012E}{\ogonek{I}}%
+  \DeclareUnicodeCharacter{012F}{\ogonek{i}}%
+  %
+  \DeclareUnicodeCharacter{0130}{\dotaccent{I}}%
+  \DeclareUnicodeCharacter{0131}{\dotless{i}}%
+  \DeclareUnicodeCharacter{0132}{IJ}%
+  \DeclareUnicodeCharacter{0133}{ij}%
+  \DeclareUnicodeCharacter{0134}{\^J}%
+  \DeclareUnicodeCharacter{0135}{\^{\dotless{j}}}%
+  \DeclareUnicodeCharacter{0136}{\cedilla{K}}%
+  \DeclareUnicodeCharacter{0137}{\cedilla{k}}%
+  \DeclareUnicodeCharacter{0138}{\ensuremath\kappa}%
+  \DeclareUnicodeCharacter{0139}{\'L}%
+  \DeclareUnicodeCharacter{013A}{\'l}%
+  \DeclareUnicodeCharacter{013B}{\cedilla{L}}%
+  \DeclareUnicodeCharacter{013C}{\cedilla{l}}%
+  \DeclareUnicodeCharacter{013D}{L'}% should kern
+  \DeclareUnicodeCharacter{013E}{l'}% should kern
+  \DeclareUnicodeCharacter{013F}{L\U{00B7}}%
+  %
+  \DeclareUnicodeCharacter{0140}{l\U{00B7}}%
+  \DeclareUnicodeCharacter{0141}{\L}%
+  \DeclareUnicodeCharacter{0142}{\l}%
+  \DeclareUnicodeCharacter{0143}{\'N}%
+  \DeclareUnicodeCharacter{0144}{\'n}%
+  \DeclareUnicodeCharacter{0145}{\cedilla{N}}%
+  \DeclareUnicodeCharacter{0146}{\cedilla{n}}%
+  \DeclareUnicodeCharacter{0147}{\v{N}}%
+  \DeclareUnicodeCharacter{0148}{\v{n}}%
+  \DeclareUnicodeCharacter{0149}{'n}%
+  \DeclareUnicodeCharacter{014A}{\missingcharmsg{ENG}}%
+  \DeclareUnicodeCharacter{014B}{\missingcharmsg{eng}}%
+  \DeclareUnicodeCharacter{014C}{\=O}%
+  \DeclareUnicodeCharacter{014D}{\=o}%
+  \DeclareUnicodeCharacter{014E}{\u{O}}%
+  \DeclareUnicodeCharacter{014F}{\u{o}}%
+  %
+  \DeclareUnicodeCharacter{0150}{\H{O}}%
+  \DeclareUnicodeCharacter{0151}{\H{o}}%
+  \DeclareUnicodeCharacter{0152}{\OE}%
+  \DeclareUnicodeCharacter{0153}{\oe}%
+  \DeclareUnicodeCharacter{0154}{\'R}%
+  \DeclareUnicodeCharacter{0155}{\'r}%
+  \DeclareUnicodeCharacter{0156}{\cedilla{R}}%
+  \DeclareUnicodeCharacter{0157}{\cedilla{r}}%
+  \DeclareUnicodeCharacter{0158}{\v{R}}%
+  \DeclareUnicodeCharacter{0159}{\v{r}}%
+  \DeclareUnicodeCharacter{015A}{\'S}%
+  \DeclareUnicodeCharacter{015B}{\'s}%
+  \DeclareUnicodeCharacter{015C}{\^S}%
+  \DeclareUnicodeCharacter{015D}{\^s}%
+  \DeclareUnicodeCharacter{015E}{\cedilla{S}}%
+  \DeclareUnicodeCharacter{015F}{\cedilla{s}}%
+  %
+  \DeclareUnicodeCharacter{0160}{\v{S}}%
+  \DeclareUnicodeCharacter{0161}{\v{s}}%
+  \DeclareUnicodeCharacter{0162}{\cedilla{T}}%
+  \DeclareUnicodeCharacter{0163}{\cedilla{t}}%
+  \DeclareUnicodeCharacter{0164}{\v{T}}%
+  \DeclareUnicodeCharacter{0165}{\v{t}}%
+  \DeclareUnicodeCharacter{0166}{\missingcharmsg{H WITH STROKE}}%
+  \DeclareUnicodeCharacter{0167}{\missingcharmsg{h WITH STROKE}}%
+  \DeclareUnicodeCharacter{0168}{\~U}%
+  \DeclareUnicodeCharacter{0169}{\~u}%
+  \DeclareUnicodeCharacter{016A}{\=U}%
+  \DeclareUnicodeCharacter{016B}{\=u}%
+  \DeclareUnicodeCharacter{016C}{\u{U}}%
+  \DeclareUnicodeCharacter{016D}{\u{u}}%
+  \DeclareUnicodeCharacter{016E}{\ringaccent{U}}%
+  \DeclareUnicodeCharacter{016F}{\ringaccent{u}}%
+  %
+  \DeclareUnicodeCharacter{0170}{\H{U}}%
+  \DeclareUnicodeCharacter{0171}{\H{u}}%
+  \DeclareUnicodeCharacter{0172}{\ogonek{U}}%
+  \DeclareUnicodeCharacter{0173}{\ogonek{u}}%
+  \DeclareUnicodeCharacter{0174}{\^W}%
+  \DeclareUnicodeCharacter{0175}{\^w}%
+  \DeclareUnicodeCharacter{0176}{\^Y}%
+  \DeclareUnicodeCharacter{0177}{\^y}%
+  \DeclareUnicodeCharacter{0178}{\"Y}%
+  \DeclareUnicodeCharacter{0179}{\'Z}%
+  \DeclareUnicodeCharacter{017A}{\'z}%
+  \DeclareUnicodeCharacter{017B}{\dotaccent{Z}}%
+  \DeclareUnicodeCharacter{017C}{\dotaccent{z}}%
+  \DeclareUnicodeCharacter{017D}{\v{Z}}%
+  \DeclareUnicodeCharacter{017E}{\v{z}}%
+  \DeclareUnicodeCharacter{017F}{\missingcharmsg{LONG S}}%
+  %
+  \DeclareUnicodeCharacter{01C4}{D\v{Z}}%
+  \DeclareUnicodeCharacter{01C5}{D\v{z}}%
+  \DeclareUnicodeCharacter{01C6}{d\v{z}}%
+  \DeclareUnicodeCharacter{01C7}{LJ}%
+  \DeclareUnicodeCharacter{01C8}{Lj}%
+  \DeclareUnicodeCharacter{01C9}{lj}%
+  \DeclareUnicodeCharacter{01CA}{NJ}%
+  \DeclareUnicodeCharacter{01CB}{Nj}%
+  \DeclareUnicodeCharacter{01CC}{nj}%
+  \DeclareUnicodeCharacter{01CD}{\v{A}}%
+  \DeclareUnicodeCharacter{01CE}{\v{a}}%
+  \DeclareUnicodeCharacter{01CF}{\v{I}}%
+  %
+  \DeclareUnicodeCharacter{01D0}{\v{\dotless{i}}}%
+  \DeclareUnicodeCharacter{01D1}{\v{O}}%
+  \DeclareUnicodeCharacter{01D2}{\v{o}}%
+  \DeclareUnicodeCharacter{01D3}{\v{U}}%
+  \DeclareUnicodeCharacter{01D4}{\v{u}}%
+  %
+  \DeclareUnicodeCharacter{01E2}{\={\AE}}%
+  \DeclareUnicodeCharacter{01E3}{\={\ae}}%
+  \DeclareUnicodeCharacter{01E6}{\v{G}}%
+  \DeclareUnicodeCharacter{01E7}{\v{g}}%
+  \DeclareUnicodeCharacter{01E8}{\v{K}}%
+  \DeclareUnicodeCharacter{01E9}{\v{k}}%
+  %
+  \DeclareUnicodeCharacter{01F0}{\v{\dotless{j}}}%
+  \DeclareUnicodeCharacter{01F1}{DZ}%
+  \DeclareUnicodeCharacter{01F2}{Dz}%
+  \DeclareUnicodeCharacter{01F3}{dz}%
+  \DeclareUnicodeCharacter{01F4}{\'G}%
+  \DeclareUnicodeCharacter{01F5}{\'g}%
+  \DeclareUnicodeCharacter{01F8}{\`N}%
+  \DeclareUnicodeCharacter{01F9}{\`n}%
+  \DeclareUnicodeCharacter{01FC}{\'{\AE}}%
+  \DeclareUnicodeCharacter{01FD}{\'{\ae}}%
+  \DeclareUnicodeCharacter{01FE}{\'{\O}}%
+  \DeclareUnicodeCharacter{01FF}{\'{\o}}%
+  %
+  \DeclareUnicodeCharacter{021E}{\v{H}}%
+  \DeclareUnicodeCharacter{021F}{\v{h}}%
+  %
+  \DeclareUnicodeCharacter{0226}{\dotaccent{A}}%
+  \DeclareUnicodeCharacter{0227}{\dotaccent{a}}%
+  \DeclareUnicodeCharacter{0228}{\cedilla{E}}%
+  \DeclareUnicodeCharacter{0229}{\cedilla{e}}%
+  \DeclareUnicodeCharacter{022E}{\dotaccent{O}}%
+  \DeclareUnicodeCharacter{022F}{\dotaccent{o}}%
+  %
+  \DeclareUnicodeCharacter{0232}{\=Y}%
+  \DeclareUnicodeCharacter{0233}{\=y}%
+  \DeclareUnicodeCharacter{0237}{\dotless{j}}%
+  %
+  \DeclareUnicodeCharacter{02BC}{'}%
+  %
+  \DeclareUnicodeCharacter{02DB}{\ogonek{ }}%
+  %
+  % Greek letters upper case
+  \DeclareUnicodeCharacter{0391}{{\it A}}%
+  \DeclareUnicodeCharacter{0392}{{\it B}}%
+  \DeclareUnicodeCharacter{0393}{\ensuremath{\mit\Gamma}}%
+  \DeclareUnicodeCharacter{0394}{\ensuremath{\mit\Delta}}%
+  \DeclareUnicodeCharacter{0395}{{\it E}}%
+  \DeclareUnicodeCharacter{0396}{{\it Z}}%
+  \DeclareUnicodeCharacter{0397}{{\it H}}%
+  \DeclareUnicodeCharacter{0398}{\ensuremath{\mit\Theta}}%
+  \DeclareUnicodeCharacter{0399}{{\it I}}%
+  \DeclareUnicodeCharacter{039A}{{\it K}}%
+  \DeclareUnicodeCharacter{039B}{\ensuremath{\mit\Lambda}}%
+  \DeclareUnicodeCharacter{039C}{{\it M}}%
+  \DeclareUnicodeCharacter{039D}{{\it N}}%
+  \DeclareUnicodeCharacter{039E}{\ensuremath{\mit\Xi}}%
+  \DeclareUnicodeCharacter{039F}{{\it O}}%
+  \DeclareUnicodeCharacter{03A0}{\ensuremath{\mit\Pi}}%
+  \DeclareUnicodeCharacter{03A1}{{\it P}}%
+  %\DeclareUnicodeCharacter{03A2}{} % none - corresponds to final sigma
+  \DeclareUnicodeCharacter{03A3}{\ensuremath{\mit\Sigma}}%
+  \DeclareUnicodeCharacter{03A4}{{\it T}}%
+  \DeclareUnicodeCharacter{03A5}{\ensuremath{\mit\Upsilon}}%
+  \DeclareUnicodeCharacter{03A6}{\ensuremath{\mit\Phi}}%
+  \DeclareUnicodeCharacter{03A7}{{\it X}}%
+  \DeclareUnicodeCharacter{03A8}{\ensuremath{\mit\Psi}}%
+  \DeclareUnicodeCharacter{03A9}{\ensuremath{\mit\Omega}}%
+  %
+  % Vowels with accents
+  \DeclareUnicodeCharacter{0390}{\ensuremath{\ddot{\acute\iota}}}%
+  \DeclareUnicodeCharacter{03AC}{\ensuremath{\acute\alpha}}%
+  \DeclareUnicodeCharacter{03AD}{\ensuremath{\acute\epsilon}}%
+  \DeclareUnicodeCharacter{03AE}{\ensuremath{\acute\eta}}%
+  \DeclareUnicodeCharacter{03AF}{\ensuremath{\acute\iota}}%
+  \DeclareUnicodeCharacter{03B0}{\ensuremath{\acute{\ddot\upsilon}}}%
+  %
+  % Standalone accent
+  \DeclareUnicodeCharacter{0384}{\ensuremath{\acute{\ }}}%
+  %
+  % Greek letters lower case
+  \DeclareUnicodeCharacter{03B1}{\ensuremath\alpha}%
+  \DeclareUnicodeCharacter{03B2}{\ensuremath\beta}%
+  \DeclareUnicodeCharacter{03B3}{\ensuremath\gamma}%
+  \DeclareUnicodeCharacter{03B4}{\ensuremath\delta}%
+  \DeclareUnicodeCharacter{03B5}{\ensuremath\epsilon}%
+  \DeclareUnicodeCharacter{03B6}{\ensuremath\zeta}%
+  \DeclareUnicodeCharacter{03B7}{\ensuremath\eta}%
+  \DeclareUnicodeCharacter{03B8}{\ensuremath\theta}%
+  \DeclareUnicodeCharacter{03B9}{\ensuremath\iota}%
+  \DeclareUnicodeCharacter{03BA}{\ensuremath\kappa}%
+  \DeclareUnicodeCharacter{03BB}{\ensuremath\lambda}%
+  \DeclareUnicodeCharacter{03BC}{\ensuremath\mu}%
+  \DeclareUnicodeCharacter{03BD}{\ensuremath\nu}%
+  \DeclareUnicodeCharacter{03BE}{\ensuremath\xi}%
+  \DeclareUnicodeCharacter{03BF}{{\it o}}% omicron
+  \DeclareUnicodeCharacter{03C0}{\ensuremath\pi}%
+  \DeclareUnicodeCharacter{03C1}{\ensuremath\rho}%
+  \DeclareUnicodeCharacter{03C2}{\ensuremath\varsigma}%
+  \DeclareUnicodeCharacter{03C3}{\ensuremath\sigma}%
+  \DeclareUnicodeCharacter{03C4}{\ensuremath\tau}%
+  \DeclareUnicodeCharacter{03C5}{\ensuremath\upsilon}%
+  \DeclareUnicodeCharacter{03C6}{\ensuremath\phi}%
+  \DeclareUnicodeCharacter{03C7}{\ensuremath\chi}%
+  \DeclareUnicodeCharacter{03C8}{\ensuremath\psi}%
+  \DeclareUnicodeCharacter{03C9}{\ensuremath\omega}%
+  %
+  % More Greek vowels with accents
+  \DeclareUnicodeCharacter{03CA}{\ensuremath{\ddot\iota}}%
+  \DeclareUnicodeCharacter{03CB}{\ensuremath{\ddot\upsilon}}%
+  \DeclareUnicodeCharacter{03CC}{\ensuremath{\acute o}}%
+  \DeclareUnicodeCharacter{03CD}{\ensuremath{\acute\upsilon}}%
+  \DeclareUnicodeCharacter{03CE}{\ensuremath{\acute\omega}}%
+  %
+  % Variant Greek letters
+  \DeclareUnicodeCharacter{03D1}{\ensuremath\vartheta}%
+  \DeclareUnicodeCharacter{03D6}{\ensuremath\varpi}%
+  \DeclareUnicodeCharacter{03F1}{\ensuremath\varrho}%
+  %
+  \DeclareUnicodeCharacter{1E02}{\dotaccent{B}}%
+  \DeclareUnicodeCharacter{1E03}{\dotaccent{b}}%
+  \DeclareUnicodeCharacter{1E04}{\udotaccent{B}}%
+  \DeclareUnicodeCharacter{1E05}{\udotaccent{b}}%
+  \DeclareUnicodeCharacter{1E06}{\ubaraccent{B}}%
+  \DeclareUnicodeCharacter{1E07}{\ubaraccent{b}}%
+  \DeclareUnicodeCharacter{1E0A}{\dotaccent{D}}%
+  \DeclareUnicodeCharacter{1E0B}{\dotaccent{d}}%
+  \DeclareUnicodeCharacter{1E0C}{\udotaccent{D}}%
+  \DeclareUnicodeCharacter{1E0D}{\udotaccent{d}}%
+  \DeclareUnicodeCharacter{1E0E}{\ubaraccent{D}}%
+  \DeclareUnicodeCharacter{1E0F}{\ubaraccent{d}}%
+  %
+  \DeclareUnicodeCharacter{1E1E}{\dotaccent{F}}%
+  \DeclareUnicodeCharacter{1E1F}{\dotaccent{f}}%
+  %
+  \DeclareUnicodeCharacter{1E20}{\=G}%
+  \DeclareUnicodeCharacter{1E21}{\=g}%
+  \DeclareUnicodeCharacter{1E22}{\dotaccent{H}}%
+  \DeclareUnicodeCharacter{1E23}{\dotaccent{h}}%
+  \DeclareUnicodeCharacter{1E24}{\udotaccent{H}}%
+  \DeclareUnicodeCharacter{1E25}{\udotaccent{h}}%
+  \DeclareUnicodeCharacter{1E26}{\"H}%
+  \DeclareUnicodeCharacter{1E27}{\"h}%
+  %
+  \DeclareUnicodeCharacter{1E30}{\'K}%
+  \DeclareUnicodeCharacter{1E31}{\'k}%
+  \DeclareUnicodeCharacter{1E32}{\udotaccent{K}}%
+  \DeclareUnicodeCharacter{1E33}{\udotaccent{k}}%
+  \DeclareUnicodeCharacter{1E34}{\ubaraccent{K}}%
+  \DeclareUnicodeCharacter{1E35}{\ubaraccent{k}}%
+  \DeclareUnicodeCharacter{1E36}{\udotaccent{L}}%
+  \DeclareUnicodeCharacter{1E37}{\udotaccent{l}}%
+  \DeclareUnicodeCharacter{1E3A}{\ubaraccent{L}}%
+  \DeclareUnicodeCharacter{1E3B}{\ubaraccent{l}}%
+  \DeclareUnicodeCharacter{1E3E}{\'M}%
+  \DeclareUnicodeCharacter{1E3F}{\'m}%
+  %
+  \DeclareUnicodeCharacter{1E40}{\dotaccent{M}}%
+  \DeclareUnicodeCharacter{1E41}{\dotaccent{m}}%
+  \DeclareUnicodeCharacter{1E42}{\udotaccent{M}}%
+  \DeclareUnicodeCharacter{1E43}{\udotaccent{m}}%
+  \DeclareUnicodeCharacter{1E44}{\dotaccent{N}}%
+  \DeclareUnicodeCharacter{1E45}{\dotaccent{n}}%
+  \DeclareUnicodeCharacter{1E46}{\udotaccent{N}}%
+  \DeclareUnicodeCharacter{1E47}{\udotaccent{n}}%
+  \DeclareUnicodeCharacter{1E48}{\ubaraccent{N}}%
+  \DeclareUnicodeCharacter{1E49}{\ubaraccent{n}}%
+  %
+  \DeclareUnicodeCharacter{1E54}{\'P}%
+  \DeclareUnicodeCharacter{1E55}{\'p}%
+  \DeclareUnicodeCharacter{1E56}{\dotaccent{P}}%
+  \DeclareUnicodeCharacter{1E57}{\dotaccent{p}}%
+  \DeclareUnicodeCharacter{1E58}{\dotaccent{R}}%
+  \DeclareUnicodeCharacter{1E59}{\dotaccent{r}}%
+  \DeclareUnicodeCharacter{1E5A}{\udotaccent{R}}%
+  \DeclareUnicodeCharacter{1E5B}{\udotaccent{r}}%
+  \DeclareUnicodeCharacter{1E5E}{\ubaraccent{R}}%
+  \DeclareUnicodeCharacter{1E5F}{\ubaraccent{r}}%
+  %
+  \DeclareUnicodeCharacter{1E60}{\dotaccent{S}}%
+  \DeclareUnicodeCharacter{1E61}{\dotaccent{s}}%
+  \DeclareUnicodeCharacter{1E62}{\udotaccent{S}}%
+  \DeclareUnicodeCharacter{1E63}{\udotaccent{s}}%
+  \DeclareUnicodeCharacter{1E6A}{\dotaccent{T}}%
+  \DeclareUnicodeCharacter{1E6B}{\dotaccent{t}}%
+  \DeclareUnicodeCharacter{1E6C}{\udotaccent{T}}%
+  \DeclareUnicodeCharacter{1E6D}{\udotaccent{t}}%
+  \DeclareUnicodeCharacter{1E6E}{\ubaraccent{T}}%
+  \DeclareUnicodeCharacter{1E6F}{\ubaraccent{t}}%
+  %
+  \DeclareUnicodeCharacter{1E7C}{\~V}%
+  \DeclareUnicodeCharacter{1E7D}{\~v}%
+  \DeclareUnicodeCharacter{1E7E}{\udotaccent{V}}%
+  \DeclareUnicodeCharacter{1E7F}{\udotaccent{v}}%
+  %
+  \DeclareUnicodeCharacter{1E80}{\`W}%
+  \DeclareUnicodeCharacter{1E81}{\`w}%
+  \DeclareUnicodeCharacter{1E82}{\'W}%
+  \DeclareUnicodeCharacter{1E83}{\'w}%
+  \DeclareUnicodeCharacter{1E84}{\"W}%
+  \DeclareUnicodeCharacter{1E85}{\"w}%
+  \DeclareUnicodeCharacter{1E86}{\dotaccent{W}}%
+  \DeclareUnicodeCharacter{1E87}{\dotaccent{w}}%
+  \DeclareUnicodeCharacter{1E88}{\udotaccent{W}}%
+  \DeclareUnicodeCharacter{1E89}{\udotaccent{w}}%
+  \DeclareUnicodeCharacter{1E8A}{\dotaccent{X}}%
+  \DeclareUnicodeCharacter{1E8B}{\dotaccent{x}}%
+  \DeclareUnicodeCharacter{1E8C}{\"X}%
+  \DeclareUnicodeCharacter{1E8D}{\"x}%
+  \DeclareUnicodeCharacter{1E8E}{\dotaccent{Y}}%
+  \DeclareUnicodeCharacter{1E8F}{\dotaccent{y}}%
+  %
+  \DeclareUnicodeCharacter{1E90}{\^Z}%
+  \DeclareUnicodeCharacter{1E91}{\^z}%
+  \DeclareUnicodeCharacter{1E92}{\udotaccent{Z}}%
+  \DeclareUnicodeCharacter{1E93}{\udotaccent{z}}%
+  \DeclareUnicodeCharacter{1E94}{\ubaraccent{Z}}%
+  \DeclareUnicodeCharacter{1E95}{\ubaraccent{z}}%
+  \DeclareUnicodeCharacter{1E96}{\ubaraccent{h}}%
+  \DeclareUnicodeCharacter{1E97}{\"t}%
+  \DeclareUnicodeCharacter{1E98}{\ringaccent{w}}%
+  \DeclareUnicodeCharacter{1E99}{\ringaccent{y}}%
+  %
+  \DeclareUnicodeCharacter{1EA0}{\udotaccent{A}}%
+  \DeclareUnicodeCharacter{1EA1}{\udotaccent{a}}%
+  %
+  \DeclareUnicodeCharacter{1EB8}{\udotaccent{E}}%
+  \DeclareUnicodeCharacter{1EB9}{\udotaccent{e}}%
+  \DeclareUnicodeCharacter{1EBC}{\~E}%
+  \DeclareUnicodeCharacter{1EBD}{\~e}%
+  %
+  \DeclareUnicodeCharacter{1ECA}{\udotaccent{I}}%
+  \DeclareUnicodeCharacter{1ECB}{\udotaccent{i}}%
+  \DeclareUnicodeCharacter{1ECC}{\udotaccent{O}}%
+  \DeclareUnicodeCharacter{1ECD}{\udotaccent{o}}%
+  %
+  \DeclareUnicodeCharacter{1EE4}{\udotaccent{U}}%
+  \DeclareUnicodeCharacter{1EE5}{\udotaccent{u}}%
+  %
+  \DeclareUnicodeCharacter{1EF2}{\`Y}%
+  \DeclareUnicodeCharacter{1EF3}{\`y}%
+  \DeclareUnicodeCharacter{1EF4}{\udotaccent{Y}}%
+  %
+  \DeclareUnicodeCharacter{1EF8}{\~Y}%
+  \DeclareUnicodeCharacter{1EF9}{\~y}%
+  %
+  % Punctuation
+  \DeclareUnicodeCharacter{2013}{--}%
+  \DeclareUnicodeCharacter{2014}{---}%
+  \DeclareUnicodeCharacter{2018}{\quoteleft{}}%
+  \DeclareUnicodeCharacter{2019}{\quoteright{}}%
+  \DeclareUnicodeCharacter{201A}{\quotesinglbase{}}%
+  \DeclareUnicodeCharacter{201C}{\quotedblleft{}}%
+  \DeclareUnicodeCharacter{201D}{\quotedblright{}}%
+  \DeclareUnicodeCharacter{201E}{\quotedblbase{}}%
+  \DeclareUnicodeCharacter{2020}{\ensuremath\dagger}%
+  \DeclareUnicodeCharacter{2021}{\ensuremath\ddagger}%
+  \DeclareUnicodeCharacter{2022}{\bullet{}}%
+  \DeclareUnicodeCharacter{202F}{\thinspace}%
+  \DeclareUnicodeCharacter{2026}{\dots{}}%
+  \DeclareUnicodeCharacter{2039}{\guilsinglleft{}}%
+  \DeclareUnicodeCharacter{203A}{\guilsinglright{}}%
+  %
+  \DeclareUnicodeCharacter{20AC}{\euro{}}%
+  %
+  \DeclareUnicodeCharacter{2192}{\expansion{}}%
+  \DeclareUnicodeCharacter{21D2}{\result{}}%
+  %
+  % Mathematical symbols
+  \DeclareUnicodeCharacter{2200}{\ensuremath\forall}%
+  \DeclareUnicodeCharacter{2203}{\ensuremath\exists}%
+  \DeclareUnicodeCharacter{2208}{\ensuremath\in}%
+  \DeclareUnicodeCharacter{2212}{\minus{}}%
+  \DeclareUnicodeCharacter{2217}{\ast}%
+  \DeclareUnicodeCharacter{221E}{\ensuremath\infty}%
+  \DeclareUnicodeCharacter{2225}{\ensuremath\parallel}%
+  \DeclareUnicodeCharacter{2227}{\ensuremath\wedge}%
+  \DeclareUnicodeCharacter{2229}{\ensuremath\cap}%
+  \DeclareUnicodeCharacter{2261}{\equiv{}}%
+  \DeclareUnicodeCharacter{2264}{\ensuremath\leq}%
+  \DeclareUnicodeCharacter{2265}{\ensuremath\geq}%
+  \DeclareUnicodeCharacter{2282}{\ensuremath\subset}%
+  \DeclareUnicodeCharacter{2287}{\ensuremath\supseteq}%
+  %
+  \DeclareUnicodeCharacter{2016}{\ensuremath\Vert}%
+  \DeclareUnicodeCharacter{2032}{\ensuremath\prime}%
+  \DeclareUnicodeCharacter{210F}{\ensuremath\hbar}%
+  \DeclareUnicodeCharacter{2111}{\ensuremath\Im}%
+  \DeclareUnicodeCharacter{2113}{\ensuremath\ell}%
+  \DeclareUnicodeCharacter{2118}{\ensuremath\wp}%
+  \DeclareUnicodeCharacter{211C}{\ensuremath\Re}%
+  \DeclareUnicodeCharacter{2135}{\ensuremath\aleph}%
+  \DeclareUnicodeCharacter{2190}{\ensuremath\leftarrow}%
+  \DeclareUnicodeCharacter{2191}{\ensuremath\uparrow}%
+  \DeclareUnicodeCharacter{2193}{\ensuremath\downarrow}%
+  \DeclareUnicodeCharacter{2194}{\ensuremath\leftrightarrow}%
+  \DeclareUnicodeCharacter{2195}{\ensuremath\updownarrow}%
+  \DeclareUnicodeCharacter{2196}{\ensuremath\nwarrow}%
+  \DeclareUnicodeCharacter{2197}{\ensuremath\nearrow}%
+  \DeclareUnicodeCharacter{2198}{\ensuremath\searrow}%
+  \DeclareUnicodeCharacter{2199}{\ensuremath\swarrow}%
+  \DeclareUnicodeCharacter{21A6}{\ensuremath\mapsto}%
+  \DeclareUnicodeCharacter{21A9}{\ensuremath\hookleftarrow}%
+  \DeclareUnicodeCharacter{21AA}{\ensuremath\hookrightarrow}%
+  \DeclareUnicodeCharacter{21BC}{\ensuremath\leftharpoonup}%
+  \DeclareUnicodeCharacter{21BD}{\ensuremath\leftharpoondown}%
+  \DeclareUnicodeCharacter{21C0}{\ensuremath\rightharpoonup}%
+  \DeclareUnicodeCharacter{21C1}{\ensuremath\rightharpoondown}%
+  \DeclareUnicodeCharacter{21CC}{\ensuremath\rightleftharpoons}%
+  \DeclareUnicodeCharacter{21D0}{\ensuremath\Leftarrow}%
+  \DeclareUnicodeCharacter{21D1}{\ensuremath\Uparrow}%
+  \DeclareUnicodeCharacter{21D3}{\ensuremath\Downarrow}%
+  \DeclareUnicodeCharacter{21D4}{\ensuremath\Leftrightarrow}%
+  \DeclareUnicodeCharacter{21D5}{\ensuremath\Updownarrow}%
+  \DeclareUnicodeCharacter{2202}{\ensuremath\partial}%
+  \DeclareUnicodeCharacter{2205}{\ensuremath\emptyset}%
+  \DeclareUnicodeCharacter{2207}{\ensuremath\nabla}%
+  \DeclareUnicodeCharacter{2209}{\ensuremath\notin}%
+  \DeclareUnicodeCharacter{220B}{\ensuremath\owns}%
+  \DeclareUnicodeCharacter{220F}{\ensuremath\prod}%
+  \DeclareUnicodeCharacter{2210}{\ensuremath\coprod}%
+  \DeclareUnicodeCharacter{2211}{\ensuremath\sum}%
+  \DeclareUnicodeCharacter{2213}{\ensuremath\mp}%
+  \DeclareUnicodeCharacter{2218}{\ensuremath\circ}%
+  \DeclareUnicodeCharacter{221A}{\ensuremath\surd}%
+  \DeclareUnicodeCharacter{221D}{\ensuremath\propto}%
+  \DeclareUnicodeCharacter{2220}{\ensuremath\angle}%
+  \DeclareUnicodeCharacter{2223}{\ensuremath\mid}%
+  \DeclareUnicodeCharacter{2228}{\ensuremath\vee}%
+  \DeclareUnicodeCharacter{222A}{\ensuremath\cup}%
+  \DeclareUnicodeCharacter{222B}{\ensuremath\smallint}%
+  \DeclareUnicodeCharacter{222E}{\ensuremath\oint}%
+  \DeclareUnicodeCharacter{223C}{\ensuremath\sim}%
+  \DeclareUnicodeCharacter{2240}{\ensuremath\wr}%
+  \DeclareUnicodeCharacter{2243}{\ensuremath\simeq}%
+  \DeclareUnicodeCharacter{2245}{\ensuremath\cong}%
+  \DeclareUnicodeCharacter{2248}{\ensuremath\approx}%
+  \DeclareUnicodeCharacter{224D}{\ensuremath\asymp}%
+  \DeclareUnicodeCharacter{2250}{\ensuremath\doteq}%
+  \DeclareUnicodeCharacter{2260}{\ensuremath\neq}%
+  \DeclareUnicodeCharacter{226A}{\ensuremath\ll}%
+  \DeclareUnicodeCharacter{226B}{\ensuremath\gg}%
+  \DeclareUnicodeCharacter{227A}{\ensuremath\prec}%
+  \DeclareUnicodeCharacter{227B}{\ensuremath\succ}%
+  \DeclareUnicodeCharacter{2283}{\ensuremath\supset}%
+  \DeclareUnicodeCharacter{2286}{\ensuremath\subseteq}%
+  \DeclareUnicodeCharacter{228E}{\ensuremath\uplus}%
+  \DeclareUnicodeCharacter{2291}{\ensuremath\sqsubseteq}%
+  \DeclareUnicodeCharacter{2292}{\ensuremath\sqsupseteq}%
+  \DeclareUnicodeCharacter{2293}{\ensuremath\sqcap}%
+  \DeclareUnicodeCharacter{2294}{\ensuremath\sqcup}%
+  \DeclareUnicodeCharacter{2295}{\ensuremath\oplus}%
+  \DeclareUnicodeCharacter{2296}{\ensuremath\ominus}%
+  \DeclareUnicodeCharacter{2297}{\ensuremath\otimes}%
+  \DeclareUnicodeCharacter{2298}{\ensuremath\oslash}%
+  \DeclareUnicodeCharacter{2299}{\ensuremath\odot}%
+  \DeclareUnicodeCharacter{22A2}{\ensuremath\vdash}%
+  \DeclareUnicodeCharacter{22A3}{\ensuremath\dashv}%
+  \DeclareUnicodeCharacter{22A4}{\ensuremath\ptextop}%
+  \DeclareUnicodeCharacter{22A5}{\ensuremath\bot}%
+  \DeclareUnicodeCharacter{22A8}{\ensuremath\models}%
+  \DeclareUnicodeCharacter{22C0}{\ensuremath\bigwedge}%
+  \DeclareUnicodeCharacter{22C1}{\ensuremath\bigvee}%
+  \DeclareUnicodeCharacter{22C2}{\ensuremath\bigcap}%
+  \DeclareUnicodeCharacter{22C3}{\ensuremath\bigcup}%
+  \DeclareUnicodeCharacter{22C4}{\ensuremath\diamond}%
+  \DeclareUnicodeCharacter{22C5}{\ensuremath\cdot}%
+  \DeclareUnicodeCharacter{22C6}{\ensuremath\star}%
+  \DeclareUnicodeCharacter{22C8}{\ensuremath\bowtie}%
+  \DeclareUnicodeCharacter{2308}{\ensuremath\lceil}%
+  \DeclareUnicodeCharacter{2309}{\ensuremath\rceil}%
+  \DeclareUnicodeCharacter{230A}{\ensuremath\lfloor}%
+  \DeclareUnicodeCharacter{230B}{\ensuremath\rfloor}%
+  \DeclareUnicodeCharacter{2322}{\ensuremath\frown}%
+  \DeclareUnicodeCharacter{2323}{\ensuremath\smile}%
+  %
+  \DeclareUnicodeCharacter{25B3}{\ensuremath\triangle}%
+  \DeclareUnicodeCharacter{25B7}{\ensuremath\triangleright}%
+  \DeclareUnicodeCharacter{25BD}{\ensuremath\bigtriangledown}%
+  \DeclareUnicodeCharacter{25C1}{\ensuremath\triangleleft}%
+  \DeclareUnicodeCharacter{25C7}{\ensuremath\diamond}%
+  \DeclareUnicodeCharacter{2660}{\ensuremath\spadesuit}%
+  \DeclareUnicodeCharacter{2661}{\ensuremath\heartsuit}%
+  \DeclareUnicodeCharacter{2662}{\ensuremath\diamondsuit}%
+  \DeclareUnicodeCharacter{2663}{\ensuremath\clubsuit}%
+  \DeclareUnicodeCharacter{266D}{\ensuremath\flat}%
+  \DeclareUnicodeCharacter{266E}{\ensuremath\natural}%
+  \DeclareUnicodeCharacter{266F}{\ensuremath\sharp}%
+  \DeclareUnicodeCharacter{26AA}{\ensuremath\bigcirc}%
+  \DeclareUnicodeCharacter{27B9}{\ensuremath\rangle}%
+  \DeclareUnicodeCharacter{27C2}{\ensuremath\perp}%
+  \DeclareUnicodeCharacter{27E8}{\ensuremath\langle}%
+  \DeclareUnicodeCharacter{27F5}{\ensuremath\longleftarrow}%
+  \DeclareUnicodeCharacter{27F6}{\ensuremath\longrightarrow}%
+  \DeclareUnicodeCharacter{27F7}{\ensuremath\longleftrightarrow}%
+  \DeclareUnicodeCharacter{27FC}{\ensuremath\longmapsto}%
+  \DeclareUnicodeCharacter{29F5}{\ensuremath\setminus}%
+  \DeclareUnicodeCharacter{2A00}{\ensuremath\bigodot}%
+  \DeclareUnicodeCharacter{2A01}{\ensuremath\bigoplus}%
+  \DeclareUnicodeCharacter{2A02}{\ensuremath\bigotimes}%
+  \DeclareUnicodeCharacter{2A04}{\ensuremath\biguplus}%
+  \DeclareUnicodeCharacter{2A06}{\ensuremath\bigsqcup}%
+  \DeclareUnicodeCharacter{2A3F}{\ensuremath\amalg}%
+  \DeclareUnicodeCharacter{2AAF}{\ensuremath\preceq}%
+  \DeclareUnicodeCharacter{2AB0}{\ensuremath\succeq}%
+  %
+  \global\mathchardef\checkmark="1370% actually the square root sign
+  \DeclareUnicodeCharacter{2713}{\ensuremath\checkmark}%
+}% end of \unicodechardefs
+
+% UTF-8 byte sequence (pdfTeX) definitions (replacing and @U command)
+% It makes the setting that replace UTF-8 byte sequence.
+\def\utfeightchardefs{%
+  \let\DeclareUnicodeCharacter\DeclareUnicodeCharacterUTFviii
+  \unicodechardefs
+}
+
+% Whether the active definitions of non-ASCII characters expand to
+% non-active tokens with the same character code.  This is used to
+% write characters literally, instead of using active definitions for
+% printing the correct glyphs.
+\newif\ifpassthroughchars
+\passthroughcharsfalse
+
+% For native Unicode handling (XeTeX and LuaTeX),
+% provide a definition macro to replace/pass-through a Unicode character
+%
+\def\DeclareUnicodeCharacterNative#1#2{%
+  \catcode"#1=\active
+  \def\dodeclareunicodecharacternative##1##2##3{%
+    \begingroup
+      \uccode`\~="##2\relax
+      \uppercase{\gdef~}{%
+        \ifpassthroughchars
+          ##1%
+        \else
+          ##3%
+        \fi
+      }
+    \endgroup
+  }
+  \begingroup
+    \uccode`\.="#1\relax
+    \uppercase{\def\UTFNativeTmp{.}}%
+    \expandafter\dodeclareunicodecharacternative\UTFNativeTmp{#1}{#2}%
+  \endgroup
+}
+
+% Native Unicode handling (XeTeX and LuaTeX) character replacing definition.
+% It activates the setting that replaces Unicode characters.
+\def\nativeunicodechardefs{%
+  \let\DeclareUnicodeCharacter\DeclareUnicodeCharacterNative
+  \unicodechardefs
+}
+
+% For native Unicode handling (XeTeX and LuaTeX),
+% make the character token expand
+% to the sequences given in \unicodechardefs for printing.
+\def\DeclareUnicodeCharacterNativeAtU#1#2{%
+  \def\UTFAtUTmp{#2}
+  \expandafter\globallet\csname uni:#1\endcsname \UTFAtUTmp
+}
+
+% @U command definitions for native Unicode handling (XeTeX and LuaTeX).
+\def\nativeunicodechardefsatu{%
+  \let\DeclareUnicodeCharacter\DeclareUnicodeCharacterNativeAtU
+  \unicodechardefs
+}
+
+% US-ASCII character definitions.
+\def\asciichardefs{% nothing need be done
+   \relax
+}
+
+% Define all Unicode characters we know about.  This makes UTF-8 the default
+% input encoding and allows @U to work.
+\iftxinativeunicodecapable
+  \nativeunicodechardefsatu
+\else
+  \utfeightchardefs
+\fi
+
+\message{formatting,}
+
+\newdimen\defaultparindent \defaultparindent = 15pt
+
+\chapheadingskip = 15pt plus 4pt minus 2pt
+\secheadingskip = 12pt plus 3pt minus 2pt
+\subsecheadingskip = 9pt plus 2pt minus 2pt
+
+% Prevent underfull vbox error messages.
+\vbadness = 10000
+
+% Don't be very finicky about underfull hboxes, either.
+\hbadness = 6666
+
+% Following George Bush, get rid of widows and orphans.
+\widowpenalty=10000
+\clubpenalty=10000
+
+% Use TeX 3.0's \emergencystretch to help line breaking, but if we're
+% using an old version of TeX, don't do anything.  We want the amount of
+% stretch added to depend on the line length, hence the dependence on
+% \hsize.  We call this whenever the paper size is set.
+%
+\def\setemergencystretch{%
+  \ifx\emergencystretch\thisisundefined
+    % Allow us to assign to \emergencystretch anyway.
+    \def\emergencystretch{\dimen0}%
+  \else
+    \emergencystretch = .15\hsize
+  \fi
+}
+
+% Parameters in order: 1) textheight; 2) textwidth;
+% 3) voffset; 4) hoffset; 5) binding offset; 6) topskip;
+% 7) physical page height; 8) physical page width.
+%
+% We also call \setleading{\textleading}, so the caller should define
+% \textleading.  The caller should also set \parskip.
+%
+\def\internalpagesizes#1#2#3#4#5#6#7#8{%
+  \voffset = #3\relax
+  \topskip = #6\relax
+  \splittopskip = \topskip
+  %
+  \vsize = #1\relax
+  \advance\vsize by \topskip
+  \outervsize = \vsize
+  \advance\outervsize by 2\topandbottommargin
+  \txipageheight = \vsize
+  %
+  \hsize = #2\relax
+  \outerhsize = \hsize
+  \advance\outerhsize by 0.5in
+  \txipagewidth = \hsize
+  %
+  \normaloffset = #4\relax
+  \bindingoffset = #5\relax
+  %
+  \ifpdf
+    \pdfpageheight #7\relax
+    \pdfpagewidth #8\relax
+    % if we don't reset these, they will remain at "1 true in" of
+    % whatever layout pdftex was dumped with.
+    \pdfhorigin = 1 true in
+    \pdfvorigin = 1 true in
+  \else
+    \ifx\XeTeXrevision\thisisundefined
+      \special{papersize=#8,#7}%
+    \else
+      \pdfpageheight #7\relax
+      \pdfpagewidth #8\relax
+      % XeTeX does not have \pdfhorigin and \pdfvorigin.
+    \fi
+  \fi
+  %
+  \setleading{\textleading}
+  %
+  \parindent = \defaultparindent
+  \setemergencystretch
+}
+
+% @letterpaper (the default).
+\def\letterpaper{{\globaldefs = 1
+  \parskip = 3pt plus 2pt minus 1pt
+  \textleading = 13.2pt
+  %
+  % If page is nothing but text, make it come out even.
+  \internalpagesizes{607.2pt}{6in}% that's 46 lines
+                    {\voffset}{.25in}%
+                    {\bindingoffset}{36pt}%
+                    {11in}{8.5in}%
+}}
+
+% Use @smallbook to reset parameters for 7x9.25 trim size.
+\def\smallbook{{\globaldefs = 1
+  \parskip = 2pt plus 1pt
+  \textleading = 12pt
+  %
+  \internalpagesizes{7.5in}{5in}%
+                    {-.2in}{0in}%
+                    {\bindingoffset}{16pt}%
+                    {9.25in}{7in}%
+  %
+  \lispnarrowing = 0.3in
+  \tolerance = 700
+  \contentsrightmargin = 0pt
+  \defbodyindent = .5cm
+}}
+
+% Use @smallerbook to reset parameters for 6x9 trim size.
+% (Just testing, parameters still in flux.)
+\def\smallerbook{{\globaldefs = 1
+  \parskip = 1.5pt plus 1pt
+  \textleading = 12pt
+  %
+  \internalpagesizes{7.4in}{4.8in}%
+                    {-.2in}{-.4in}%
+                    {0pt}{14pt}%
+                    {9in}{6in}%
+  %
+  \lispnarrowing = 0.25in
+  \tolerance = 700
+  \contentsrightmargin = 0pt
+  \defbodyindent = .4cm
+}}
+
+% Use @afourpaper to print on European A4 paper.
+\def\afourpaper{{\globaldefs = 1
+  \parskip = 3pt plus 2pt minus 1pt
+  \textleading = 13.2pt
+  %
+  % Double-side printing via postscript on Laserjet 4050
+  % prints double-sided nicely when \bindingoffset=10mm and \hoffset=-6mm.
+  % To change the settings for a different printer or situation, adjust
+  % \normaloffset until the front-side and back-side texts align.  Then
+  % do the same for \bindingoffset.  You can set these for testing in
+  % your texinfo source file like this:
+  % @tex
+  % \global\normaloffset = -6mm
+  % \global\bindingoffset = 10mm
+  % @end tex
+  \internalpagesizes{673.2pt}{160mm}% that's 51 lines
+                    {\voffset}{\hoffset}%
+                    {\bindingoffset}{44pt}%
+                    {297mm}{210mm}%
+  %
+  \tolerance = 700
+  \contentsrightmargin = 0pt
+  \defbodyindent = 5mm
+}}
+
+% Use @afivepaper to print on European A5 paper.
+% From romildo@urano.iceb.ufop.br, 2 July 2000.
+% He also recommends making @example and @lisp be small.
+\def\afivepaper{{\globaldefs = 1
+  \parskip = 2pt plus 1pt minus 0.1pt
+  \textleading = 12.5pt
+  %
+  \internalpagesizes{160mm}{120mm}%
+                    {\voffset}{\hoffset}%
+                    {\bindingoffset}{8pt}%
+                    {210mm}{148mm}%
+  %
+  \lispnarrowing = 0.2in
+  \tolerance = 800
+  \contentsrightmargin = 0pt
+  \defbodyindent = 2mm
+  \tableindent = 12mm
+}}
+
+% A specific text layout, 24x15cm overall, intended for A4 paper.
+\def\afourlatex{{\globaldefs = 1
+  \afourpaper
+  \internalpagesizes{237mm}{150mm}%
+                    {\voffset}{4.6mm}%
+                    {\bindingoffset}{7mm}%
+                    {297mm}{210mm}%
+  %
+  % Must explicitly reset to 0 because we call \afourpaper.
+  \globaldefs = 0
+}}
+
+% Use @afourwide to print on A4 paper in landscape format.
+\def\afourwide{{\globaldefs = 1
+  \afourpaper
+  \internalpagesizes{241mm}{165mm}%
+                    {\voffset}{-2.95mm}%
+                    {\bindingoffset}{7mm}%
+                    {297mm}{210mm}%
+  \globaldefs = 0
+}}
+
+\def\bsixpaper{{\globaldefs = 1
+  \afourpaper
+  \internalpagesizes{140mm}{100mm}%
+                    {-6.35mm}{-12.7mm}%
+                    {\bindingoffset}{14pt}%
+                    {176mm}{125mm}%
+  \let\SETdispenvsize=\smallword
+  \lispnarrowing = 0.2in
+  \globaldefs = 0
+}}
+
+
+% @pagesizes TEXTHEIGHT[,TEXTWIDTH]
+% Perhaps we should allow setting the margins, \topskip, \parskip,
+% and/or leading, also. Or perhaps we should compute them somehow.
+%
+\parseargdef\pagesizes{\pagesizesyyy #1,,\finish}
+\def\pagesizesyyy#1,#2,#3\finish{{%
+  \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \hsize=#2\relax \fi
+  \globaldefs = 1
+  %
+  \parskip = 3pt plus 2pt minus 1pt
+  \setleading{\textleading}%
+  %
+  \dimen0 = #1\relax
+  \advance\dimen0 by 2.5in % default 1in margin above heading line
+                           % and 1.5in to include heading, footing and
+                           % bottom margin
+  %
+  \dimen2 = \hsize
+  \advance\dimen2 by 2in % default to 1 inch margin on each side
+  %
+  \internalpagesizes{#1}{\hsize}%
+                    {\voffset}{\normaloffset}%
+                    {\bindingoffset}{44pt}%
+                    {\dimen0}{\dimen2}%
+}}
+
+% Set default to letter.
+%
+\letterpaper
+
+% Default value of \hfuzz, for suppressing warnings about overfull hboxes.
+\hfuzz = 1pt
+
+
+\message{and turning on texinfo input format.}
+
+\def^^L{\par} % remove \outer, so ^L can appear in an @comment
+
+% DEL is a comment character, in case @c does not suffice.
+\catcode`\^^? = 14
+
+% Define macros to output various characters with catcode for normal text.
+\catcode`\"=\other \def\normaldoublequote{"}
+\catcode`\$=\other \def\normaldollar{$}%$ font-lock fix
+\catcode`\+=\other \def\normalplus{+}
+\catcode`\<=\other \def\normalless{<}
+\catcode`\>=\other \def\normalgreater{>}
+\catcode`\^=\other \def\normalcaret{^}
+\catcode`\_=\other \def\normalunderscore{_}
+\catcode`\|=\other \def\normalverticalbar{|}
+\catcode`\~=\other \def\normaltilde{~}
+
+% This macro is used to make a character print one way in \tt
+% (where it can probably be output as-is), and another way in other fonts,
+% where something hairier probably needs to be done.
+%
+% #1 is what to print if we are indeed using \tt; #2 is what to print
+% otherwise.  Since all the Computer Modern typewriter fonts have zero
+% interword stretch (and shrink), and it is reasonable to expect all
+% typewriter fonts to have this, we can check that font parameter.
+%
+\def\ifusingtt#1#2{\ifdim \fontdimen3\font=0pt #1\else #2\fi}
+
+% Same as above, but check for italic font.  Actually this also catches
+% non-italic slanted fonts since it is impossible to distinguish them from
+% italic fonts.  But since this is only used by $ and it uses \sl anyway
+% this is not a problem.
+\def\ifusingit#1#2{\ifdim \fontdimen1\font>0pt #1\else #2\fi}
+
+% Set catcodes for Texinfo file
+
+% Active characters for printing the wanted glyph.
+% Most of these we simply print from the \tt font, but for some, we can
+% use math or other variants that look better in normal text.
+%
+\catcode`\"=\active
+\def\activedoublequote{{\tt\char34}}
+\let"=\activedoublequote
+\catcode`\~=\active \def\activetilde{{\tt\char126}} \let~ = \activetilde
+\chardef\hatchar=`\^
+\catcode`\^=\active \def\activehat{{\tt \hatchar}} \let^ = \activehat
+
+\catcode`\_=\active
+\def_{\ifusingtt\normalunderscore\_}
+\def\_{\leavevmode \kern.07em \vbox{\hrule width.3em height.1ex}\kern .07em }
+\let\realunder=_
+
+\catcode`\|=\active \def|{{\tt\char124}}
+
+\chardef \less=`\<
+\catcode`\<=\active \def\activeless{{\tt \less}}\let< = \activeless
+\chardef \gtr=`\>
+\catcode`\>=\active \def\activegtr{{\tt \gtr}}\let> = \activegtr
+\catcode`\+=\active \def+{{\tt \char 43}}
+\catcode`\$=\active \def${\ifusingit{{\sl\$}}\normaldollar}%$ font-lock fix
+\catcode`\-=\active \let-=\normaldash
+
+
+% used for headline/footline in the output routine, in case the page
+% breaks in the middle of an @tex block.
+\def\texinfochars{%
+  \let< = \activeless
+  \let> = \activegtr
+  \let~ = \activetilde
+  \let^ = \activehat
+  \setregularquotes
+  \let\b = \strong
+  \let\i = \smartitalic
+  % in principle, all other definitions in \tex have to be undone too.
+}
+
+% Used sometimes to turn off (effectively) the active characters even after
+% parsing them.
+\def\turnoffactive{%
+  \normalturnoffactive
+  \otherbackslash
+}
+
+\catcode`\@=0
+
+% \backslashcurfont outputs one backslash character in current font,
+% as in \char`\\.
+\global\chardef\backslashcurfont=`\\
+
+% \realbackslash is an actual character `\' with catcode other.
+{\catcode`\\=\other @gdef@realbackslash{\}}
+
+% In Texinfo, backslash is an active character; it prints the backslash
+% in fixed width font.
+\catcode`\\=\active  % @ for escape char from now on.
+
+% Print a typewriter backslash.  For math mode, we can't simply use
+% \backslashcurfont: the story here is that in math mode, the \char
+% of \backslashcurfont ends up printing the roman \ from the math symbol
+% font (because \char in math mode uses the \mathcode, and plain.tex
+% sets \mathcode`\\="026E).  Hence we use an explicit \mathchar,
+% which is the decimal equivalent of "715c (class 7, e.g., use \fam;
+% ignored family value; char position "5C).  We can't use " for the
+% usual hex value because it has already been made active.
+
+@def@ttbackslash{{@tt @ifmmode @mathchar29020 @else @backslashcurfont @fi}}
+@let@backslashchar = @ttbackslash % @backslashchar{} is for user documents.
+
+% \otherbackslash defines an active \ to be a literal `\' character with
+% catcode other.
+@gdef@otherbackslash{@let\=@realbackslash}
+
+% Same as @turnoffactive except outputs \ as {\tt\char`\\} instead of
+% the literal character `\'.
+%
+{@catcode`- = @active
+ @gdef@normalturnoffactive{%
+   @passthroughcharstrue
+   @let-=@normaldash
+   @let"=@normaldoublequote
+   @let$=@normaldollar %$ font-lock fix
+   @let+=@normalplus
+   @let<=@normalless
+   @let>=@normalgreater
+   @let^=@normalcaret
+   @let_=@normalunderscore
+   @let|=@normalverticalbar
+   @let~=@normaltilde
+   @let\=@ttbackslash
+   @setregularquotes
+   @unsepspaces
+ }
+}
+
+% If a .fmt file is being used, characters that might appear in a file
+% name cannot be active until we have parsed the command line.
+% So turn them off again, and have @fixbackslash turn them back on.
+@catcode`+=@other @catcode`@_=@other
+
+% \enablebackslashhack - allow file to begin `\input texinfo'
+%
+% If a .fmt file is being used, we don't want the `\input texinfo' to show up.
+% That is what \eatinput is for; after that, the `\' should revert to printing
+% a backslash.
+% If the file did not have a `\input texinfo', then it is turned off after
+% the first line; otherwise the first `\' in the file would cause an error.
+% This is used on the very last line of this file, texinfo.tex.
+% We also use @c to call @fixbackslash, in case ends of lines are hidden.
+{
+@catcode`@^=7
+@catcode`@^^M=13@gdef@enablebackslashhack{%
+  @global@let\ = @eatinput%
+  @catcode`@^^M=13%
+  @def@c{@fixbackslash@c}%
+  % Definition for the newline at the end of this file.
+  @def ^^M{@let^^M@secondlinenl}%
+  % Definition for a newline in the main Texinfo file.
+  @gdef @secondlinenl{@fixbackslash}%
+  % In case the first line has a whole-line command on it
+  @let@originalparsearg@parsearg
+  @def@parsearg{@fixbackslash@originalparsearg}
+}}
+
+{@catcode`@^=7 @catcode`@^^M=13%
+@gdef@eatinput input texinfo#1^^M{@fixbackslash}}
+
+% Emergency active definition of newline, in case an active newline token
+% appears by mistake.
+{@catcode`@^=7 @catcode13=13%
+@gdef@enableemergencynewline{%
+  @gdef^^M{%
+    @par%
+    %<warning: active newline>@par%
+}}}
+
+
+@gdef@fixbackslash{%
+  @ifx\@eatinput @let\ = @ttbackslash @fi
+  @catcode13=5 % regular end of line
+  @enableemergencynewline
+  @let@c=@comment
+  @let@parsearg@originalparsearg
+  % Also turn back on active characters that might appear in the input
+  % file name, in case not using a pre-dumped format.
+  @catcode`+=@active
+  @catcode`@_=@active
+  %
+  % If texinfo.cnf is present on the system, read it.
+  % Useful for site-wide @afourpaper, etc.  This macro, @fixbackslash, gets
+  % called at the beginning of every Texinfo file.  Not opening texinfo.cnf
+  % directly in this file, texinfo.tex, makes it possible to make a format
+  % file for Texinfo.
+  %
+  @openin 1 texinfo.cnf
+  @ifeof 1 @else @input texinfo.cnf @fi
+  @closein 1
+}
+
+
+% Say @foo, not \foo, in error messages.
+@escapechar = `@@
+
+% These (along with & and #) are made active for url-breaking, so need
+% active definitions as the normal characters.
+@def@normaldot{.}
+@def@normalquest{?}
+@def@normalslash{/}
+
+% These look ok in all fonts, so just make them not special.
+% @hashchar{} gets its own user-level command, because of #line.
+@catcode`@& = @other @def@normalamp{&}
+@catcode`@# = @other @def@normalhash{#}
+@catcode`@% = @other @def@normalpercent{%}
+
+@let @hashchar = @normalhash
+
+@c Finally, make ` and ' active, so that txicodequoteundirected and
+@c txicodequotebacktick work right in, e.g., @w{@code{`foo'}}.  If we
+@c don't make ` and ' active, @code will not get them as active chars.
+@c Do this last of all since we use ` in the previous @catcode assignments.
+@catcode`@'=@active
+@catcode`@`=@active
+@setregularquotes
+
+@c Local variables:
+@c eval: (add-hook 'before-save-hook 'time-stamp)
+@c page-delimiter: "^\\\\message\\|emacs-page"
+@c time-stamp-start: "def\\\\texinfoversion{"
+@c time-stamp-format: "%:y-%02m-%02d.%02H"
+@c time-stamp-end: "}"
+@c End:
+
+@c vim:sw=2:
+
+@enablebackslashhack
+
diff --git a/src/grep/build-aux/update-copyright b/src/grep/build-aux/update-copyright
new file mode 100755
index 0000000..fae3a5f
--- /dev/null
+++ b/src/grep/build-aux/update-copyright
@@ -0,0 +1,302 @@
+#!/bin/sh
+#! -*-perl-*-
+
+# Update an FSF copyright year list to include the current year.
+
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# Written by Jim Meyering and Joel E. Denny
+
+# This script updates an FSF copyright year list to include the current year.
+# Usage: update-copyright [FILE...]
+#
+# The arguments to this script should be names of files that contain
+# copyright statements to be updated.  The copyright holder's name
+# defaults to "Free Software Foundation, Inc." but may be changed to
+# any other name by using the "UPDATE_COPYRIGHT_HOLDER" environment
+# variable.
+#
+# For example, you might wish to use the update-copyright target rule
+# in maint.mk from gnulib's maintainer-makefile module.
+#
+# Iff a copyright statement is recognized in a file and the final
+# year is not the current year, then the statement is updated for the
+# new year and it is reformatted to:
+#
+#   1. Fit within 72 columns.
+#   2. Convert 2-digit years to 4-digit years by prepending "19".
+#   3. Expand copyright year intervals.  (See "Environment variables"
+#      below.)
+#
+# A warning is printed for every file for which no copyright
+# statement is recognized.
+#
+# Each file's copyright statement must be formatted correctly in
+# order to be recognized.  For example, each of these is fine:
+#
+#   Copyright @copyright{} 1990-2005, 2007-2009 Free Software
+#   Foundation, Inc.
+#
+#   # Copyright (C) 1990-2005, 2007-2009 Free Software
+#   # Foundation, Inc.
+#
+#   /*
+#    * Copyright &copy; 90,2005,2007-2009
+#    * Free Software Foundation, Inc.
+#    */
+#
+# However, the following format is not recognized because the line
+# prefix changes after the first line:
+#
+#   ## Copyright (C) 1990-2005, 2007-2009 Free Software
+#   #  Foundation, Inc.
+#
+# However, any correctly formatted copyright statement following
+# a non-matching copyright statements would be recognized.
+#
+# The exact conditions that a file's copyright statement must meet
+# to be recognized are:
+#
+#   1. It is the first copyright statement that meets all of the
+#      following conditions.  Subsequent copyright statements are
+#      ignored.
+#   2. Its format is "Copyright (C)", then a list of copyright years,
+#      and then the name of the copyright holder.
+#   3. The "(C)" takes one of the following forms or is omitted
+#      entirely:
+#
+#        A. (C)
+#        B. (c)
+#        C. @copyright{}
+#        D. &copy;
+#        E. ©
+#
+#   4. The "Copyright" appears at the beginning of a line, except that it
+#      may be prefixed by any sequence (e.g., a comment) of no more than
+#      5 characters -- including white space.
+#   5. Iff such a prefix is present, the same prefix appears at the
+#      beginning of each remaining line within the FSF copyright
+#      statement.  There is one exception in order to support C-style
+#      comments: if the first line's prefix contains nothing but
+#      whitespace surrounding a "/*", then the prefix for all subsequent
+#      lines is the same as the first line's prefix except with each of
+#      "/" and possibly "*" replaced by a " ".  The replacement of "*"
+#      by " " is consistent throughout all subsequent lines.
+#   6. Blank lines, even if preceded by the prefix, do not appear
+#      within the FSF copyright statement.
+#   7. Each copyright year is 2 or 4 digits, and years are separated by
+#      commas, "-", or "--".  Whitespace may appear after commas.
+#
+# Environment variables:
+#
+#   1. If UPDATE_COPYRIGHT_FORCE=1, a recognized FSF copyright statement
+#      is reformatted even if it does not need updating for the new
+#      year.  If unset or set to 0, only updated FSF copyright
+#      statements are reformatted.
+#   2. If UPDATE_COPYRIGHT_USE_INTERVALS=1, every series of consecutive
+#      copyright years (such as 90, 1991, 1992-2007, 2008) in a
+#      reformatted FSF copyright statement is collapsed to a single
+#      interval (such as 1990-2008).  If unset or set to 0, all existing
+#      copyright year intervals in a reformatted FSF copyright statement
+#      are expanded instead.
+#      If UPDATE_COPYRIGHT_USE_INTERVALS=2, convert a sequence with gaps
+#      to the minimal containing range.  For example, convert
+#      2000, 2004-2007, 2009 to 2000-2009.
+#   3. For testing purposes, you can set the assumed current year in
+#      UPDATE_COPYRIGHT_YEAR.
+#   4. The default maximum line length for a copyright line is 72.
+#      Set UPDATE_COPYRIGHT_MAX_LINE_LENGTH to use a different length.
+#   5. Set UPDATE_COPYRIGHT_HOLDER if the copyright holder is other
+#      than "Free Software Foundation, Inc.".
+
+# This is a prologue that allows to run a perl script as an executable
+# on systems that are compliant to a POSIX version before POSIX:2017.
+# On such systems, the usual invocation of an executable through execlp()
+# or execvp() fails with ENOEXEC if it is a script that does not start
+# with a #! line.  The script interpreter mentioned in the #! line has
+# to be /bin/sh, because on GuixSD systems that is the only program that
+# has a fixed file name.  The second line is essential for perl and is
+# also useful for editing this file in Emacs.  The next two lines below
+# are valid code in both sh and perl.  When executed by sh, they re-execute
+# the script through the perl program found in $PATH.  The '-x' option
+# is essential as well; without it, perl would re-execute the script
+# through /bin/sh.  When executed by perl, the next two lines are a no-op.
+eval 'exec perl -wSx -0777 -pi "$0" "$@"'
+     if 0;
+
+my $VERSION = '2020-04-04.15:07'; # UTC
+# The definition above must lie within the first 8 lines in order
+# for the Emacs time-stamp write hook (at end) to update it.
+# If you change this file with Emacs, please let the write hook
+# do its job.  Otherwise, update this string manually.
+
+use strict;
+use warnings;
+
+my $copyright_re = 'Copyright';
+my $circle_c_re = '(?:\([cC]\)|@copyright\{}|\\\\\(co|&copy;|©)';
+my $holder = $ENV{UPDATE_COPYRIGHT_HOLDER};
+$holder ||= 'Free Software Foundation, Inc.';
+my $prefix_max = 5;
+my $margin = $ENV{UPDATE_COPYRIGHT_MAX_LINE_LENGTH};
+!$margin || $margin !~ m/^\d+$/
+  and $margin = 72;
+
+my $tab_width = 8;
+
+my $this_year = $ENV{UPDATE_COPYRIGHT_YEAR};
+if (!$this_year || $this_year !~ m/^\d{4}$/)
+  {
+    my ($sec, $min, $hour, $mday, $month, $year) = localtime (time ());
+    $this_year = $year + 1900;
+  }
+
+# Unless the file consistently uses "\r\n" as the EOL, use "\n" instead.
+my $eol = /(?:^|[^\r])\n/ ? "\n" : "\r\n";
+
+my $leading;
+my $prefix;
+my $ws_re;
+my $stmt_re;
+while (/(^|\n)(.{0,$prefix_max})$copyright_re/g)
+  {
+    $leading = "$1$2";
+    $prefix = $2;
+    if ($prefix =~ /^(\s*\/)\*(\s*)$/)
+      {
+        $prefix =~ s,/, ,;
+        my $prefix_ws = $prefix;
+        $prefix_ws =~ s/\*/ /; # Only whitespace.
+        if (/\G(?:[^*\n]|\*[^\/\n])*\*?\n$prefix_ws/)
+          {
+            $prefix = $prefix_ws;
+          }
+      }
+    $ws_re = '[ \t\r\f]'; # \s without \n
+    $ws_re =
+      "(?:$ws_re*(?:$ws_re|\\n" . quotemeta($prefix) . ")$ws_re*)";
+    my $holder_re = $holder;
+    $holder_re =~ s/\s/$ws_re/g;
+    my $stmt_remainder_re =
+      "(?:$ws_re$circle_c_re)?"
+      . "$ws_re(?:(?:\\d\\d)?\\d\\d(?:,$ws_re?|--?))*"
+      . "((?:\\d\\d)?\\d\\d)$ws_re$holder_re";
+    if (/\G$stmt_remainder_re/)
+      {
+        $stmt_re =
+          quotemeta($leading) . "($copyright_re$stmt_remainder_re)";
+        last;
+      }
+  }
+if (defined $stmt_re)
+  {
+    /$stmt_re/ or die; # Should never die.
+    my $stmt = $1;
+    my $final_year_orig = $2;
+
+    # Handle two-digit year numbers like "98" and "99".
+    my $final_year = $final_year_orig;
+    $final_year <= 99
+      and $final_year += 1900;
+
+    if ($final_year != $this_year)
+      {
+        # Update the year.
+        $stmt =~ s/\b$final_year_orig\b/$final_year, $this_year/;
+      }
+    if ($final_year != $this_year || $ENV{'UPDATE_COPYRIGHT_FORCE'})
+      {
+        # Normalize all whitespace including newline-prefix sequences.
+        $stmt =~ s/$ws_re/ /g;
+
+        # Put spaces after commas.
+        $stmt =~ s/, ?/, /g;
+
+        # Convert 2-digit to 4-digit years.
+        $stmt =~ s/(\b\d\d\b)/19$1/g;
+
+        # Make the use of intervals consistent.
+        if (!$ENV{UPDATE_COPYRIGHT_USE_INTERVALS})
+          {
+            $stmt =~ s/(\d{4})--?(\d{4})/join(', ', $1..$2)/eg;
+          }
+        else
+          {
+            my $ndash = $ARGV =~ /\.tex(i(nfo)?)?$/ ? "--" : "-";
+
+            $stmt =~
+              s/
+                (\d{4})
+                (?:
+                  (,\ |--?)
+                  ((??{
+                    if   ($2 ne ', ') { '\d{4}'; }
+                    elsif (!$3)       { $1 + 1;  }
+                    else              { $3 + 1;  }
+                  }))
+                )+
+              /$1$ndash$3/gx;
+
+            # When it's 2, emit a single range encompassing all year numbers.
+            $ENV{UPDATE_COPYRIGHT_USE_INTERVALS} == 2
+              and $stmt =~ s/\b(\d{4})\b.*\b(\d{4})\b/$1$ndash$2/;
+          }
+
+        # Format within margin.
+        my $stmt_wrapped;
+        my $text_margin = $margin - length($prefix);
+        if ($prefix =~ /^(\t+)/)
+          {
+            $text_margin -= length($1) * ($tab_width - 1);
+          }
+        while (length $stmt)
+          {
+            if (($stmt =~ s/^(.{1,$text_margin})(?: |$)//)
+                || ($stmt =~ s/^([\S]+)(?: |$)//))
+              {
+                my $line = $1;
+                $stmt_wrapped .= $stmt_wrapped ? "$eol$prefix" : $leading;
+                $stmt_wrapped .= $line;
+              }
+            else
+              {
+                # Should be unreachable, but we don't want an infinite
+                # loop if it can be reached.
+                die;
+              }
+          }
+
+        # Replace the old copyright statement.
+        s/$stmt_re/$stmt_wrapped/;
+      }
+  }
+else
+  {
+    print STDERR "$ARGV: warning: copyright statement not found\n";
+  }
+
+# Hey Emacs!
+# Local variables:
+# coding: utf-8
+# mode: perl
+# indent-tabs-mode: nil
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-line-limit: 200
+# time-stamp-start: "my $VERSION = '"
+# time-stamp-format: "%:y-%02m-%02d.%02H:%02M"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "'; # UTC"
+# End:
diff --git a/src/grep/build-aux/useless-if-before-free b/src/grep/build-aux/useless-if-before-free
new file mode 100755
index 0000000..5bbbc44
--- /dev/null
+++ b/src/grep/build-aux/useless-if-before-free
@@ -0,0 +1,240 @@
+#!/bin/sh
+#! -*-perl-*-
+
+# Detect instances of "if (p) free (p);".
+# Likewise "if (p != 0)", "if (0 != p)", or with NULL; and with braces.
+
+# Copyright (C) 2008-2021 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# Written by Jim Meyering
+
+# This is a prologue that allows to run a perl script as an executable
+# on systems that are compliant to a POSIX version before POSIX:2017.
+# On such systems, the usual invocation of an executable through execlp()
+# or execvp() fails with ENOEXEC if it is a script that does not start
+# with a #! line.  The script interpreter mentioned in the #! line has
+# to be /bin/sh, because on GuixSD systems that is the only program that
+# has a fixed file name.  The second line is essential for perl and is
+# also useful for editing this file in Emacs.  The next two lines below
+# are valid code in both sh and perl.  When executed by sh, they re-execute
+# the script through the perl program found in $PATH.  The '-x' option
+# is essential as well; without it, perl would re-execute the script
+# through /bin/sh.  When executed by perl, the next two lines are a no-op.
+eval 'exec perl -wSx "$0" "$@"'
+     if 0;
+
+my $VERSION = '2021-04-11 10:11'; # UTC
+# The definition above must lie within the first 8 lines in order
+# for the Emacs time-stamp write hook (at end) to update it.
+# If you change this file with Emacs, please let the write hook
+# do its job.  Otherwise, update this string manually.
+
+my $copyright_year = '2021';
+
+use strict;
+use warnings;
+use Getopt::Long;
+
+(my $ME = $0) =~ s|.*/||;
+
+# use File::Coda; # https://meyering.net/code/Coda/
+END {
+  defined fileno STDOUT or return;
+  close STDOUT and return;
+  warn "$ME: failed to close standard output: $!\n";
+  $? ||= 1;
+}
+
+sub usage ($)
+{
+  my ($exit_code) = @_;
+  my $STREAM = ($exit_code == 0 ? *STDOUT : *STDERR);
+  if ($exit_code != 0)
+    {
+      print $STREAM "Try '$ME --help' for more information.\n";
+    }
+  else
+    {
+      print $STREAM <<EOF;
+Usage: $ME [OPTIONS] FILE...
+
+Detect any instance in FILE of a useless "if" test before a free call, e.g.,
+"if (p) free (p);".  Any such test may be safely removed without affecting
+the semantics of the C code in FILE.  Use --name=FOO --name=BAR to also
+detect free-like functions named FOO and BAR.
+
+OPTIONS:
+
+   --list       print only the name of each matching FILE (\\0-terminated)
+   --name=N     add name N to the list of \'free\'-like functions to detect;
+                  may be repeated
+
+   --help       display this help and exit
+   --version    output version information and exit
+
+Exit status:
+
+  0   one or more matches
+  1   no match
+  2   an error
+
+EXAMPLE:
+
+For example, this command prints all removable "if" tests before "free"
+and "kfree" calls in the linux kernel sources:
+
+    git ls-files -z |xargs -0 $ME --name=kfree
+
+EOF
+    }
+  exit $exit_code;
+}
+
+sub is_NULL ($)
+{
+  my ($expr) = @_;
+  return ($expr eq 'NULL' || $expr eq '0');
+}
+
+{
+  sub EXIT_MATCH {0}
+  sub EXIT_NO_MATCH {1}
+  sub EXIT_ERROR {2}
+  my $err = EXIT_NO_MATCH;
+
+  my $list;
+  my @name = qw(free);
+  GetOptions
+    (
+     help => sub { usage 0 },
+     version =>
+       sub
+       {
+         print "$ME version $VERSION\n";
+         print "Copyright (C) $copyright_year Free Software Foundation, Inc.\n";
+         print "License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.\n"
+             . "This is free software: you are free to change and redistribute it.\n"
+             . "There is NO WARRANTY, to the extent permitted by law.\n";
+         print "\n";
+         my $author = "Jim Meyering";
+         print "Written by $author.\n";
+         exit
+       },
+     list => \$list,
+     'name=s@' => \@name,
+    ) or usage 1;
+
+  # Make sure we have the right number of non-option arguments.
+  # Always tell the user why we fail.
+  @ARGV < 1
+    and (warn "$ME: missing FILE argument\n"), usage EXIT_ERROR;
+
+  my $or = join '|', @name;
+  my $regexp = qr/(?:$or)/;
+
+  # Set the input record separator.
+  # Note: this makes it impractical to print line numbers.
+  $/ = '"';
+
+  my $found_match = 0;
+ FILE:
+  foreach my $file (@ARGV)
+    {
+      open FH, '<', $file
+        or (warn "$ME: can't open '$file' for reading: $!\n"),
+          $err = EXIT_ERROR, next;
+      while (defined (my $line = <FH>))
+        {
+          # Skip non-matching lines early to save time
+          $line =~ /\bif\b/
+            or next;
+          while ($line =~
+              /\b(if\s*\(\s*([^)]+?)(?:\s*!=\s*([^)]+?))?\s*\)
+              #  1          2                  3
+               (?:   \s*$regexp\s*\((?:\s*\([^)]+\))?\s*([^)]+)\)\s*;|
+                \s*\{\s*$regexp\s*\((?:\s*\([^)]+\))?\s*([^)]+)\)\s*;\s*\}))/sxg)
+            {
+              my $all = $1;
+              my ($lhs, $rhs) = ($2, $3);
+              my ($free_opnd, $braced_free_opnd) = ($4, $5);
+              my $non_NULL;
+              if (!defined $rhs) { $non_NULL = $lhs }
+              elsif (is_NULL $rhs) { $non_NULL = $lhs }
+              elsif (is_NULL $lhs) { $non_NULL = $rhs }
+              else { next }
+
+              # Compare the non-NULL part of the "if" expression and the
+              # free'd expression, without regard to white space.
+              $non_NULL =~ tr/ \t//d;
+              my $e2 = defined $free_opnd ? $free_opnd : $braced_free_opnd;
+              $e2 =~ tr/ \t//d;
+              if ($non_NULL eq $e2)
+                {
+                  $found_match = 1;
+                  $list
+                    and (print "$file\0"), next FILE;
+                  print "$file: $all\n";
+                }
+            }
+        }
+    }
+  continue
+    {
+      close FH;
+    }
+
+  $found_match && $err == EXIT_NO_MATCH
+    and $err = EXIT_MATCH;
+
+  exit $err;
+}
+
+my $foo = <<'EOF';
+# The above is to *find* them.
+# This adjusts them, removing the unnecessary "if (p)" part.
+
+# FIXME: do something like this as an option (doesn't do braces):
+free=xfree
+git grep -l -z "$free *(" \
+  | xargs -0 useless-if-before-free -l --name="$free" \
+  | xargs -0 perl -0x3b -pi -e \
+   's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*(?:0|NULL))?\s*\)\s+('"$free"'\s*\((?:\s*\([^)]+\))?\s*\1\s*\)\s*;)/$2/s'
+
+# Use the following to remove redundant uses of kfree inside braces.
+# Note that -0777 puts perl in slurp-whole-file mode;
+# but we have plenty of memory, these days...
+free=kfree
+git grep -l -z "$free *(" \
+  | xargs -0 useless-if-before-free -l --name="$free" \
+  | xargs -0 perl -0777 -pi -e \
+     's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*(?:0|NULL))?\s*\)\s*\{\s*('"$free"'\s*\((?:\s*\([^)]+\))?\s*\1\s*\);)\s*\}[^\n]*$/$2/gms'
+
+Be careful that the result of the above transformation is valid.
+If the matched string is followed by "else", then obviously, it won't be.
+
+When modifying files, refuse to process anything other than a regular file.
+EOF
+
+## Local Variables:
+## mode: perl
+## indent-tabs-mode: nil
+## eval: (add-hook 'before-save-hook 'time-stamp)
+## time-stamp-line-limit: 50
+## time-stamp-start: "my $VERSION = '"
+## time-stamp-format: "%:y-%02m-%02d %02H:%02M"
+## time-stamp-time-zone: "UTC0"
+## time-stamp-end: "'; # UTC"
+## End:
diff --git a/src/grep/build-aux/vc-list-files b/src/grep/build-aux/vc-list-files
new file mode 100755
index 0000000..cf168ea
--- /dev/null
+++ b/src/grep/build-aux/vc-list-files
@@ -0,0 +1,113 @@
+#!/bin/sh
+# List version-controlled file names.
+
+# Print a version string.
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+# List the specified version-controlled files.
+# With no argument, list them all.  With a single DIRECTORY argument,
+# list the version-controlled files in that directory.
+
+# If there's an argument, it must be a single, "."-relative directory name.
+# cvsu is part of the cvsutils package: https://www.red-bean.com/cvsutils/
+
+postprocess=
+case $1 in
+  --help) cat <<EOF
+Usage: $0 [-C SRCDIR] [DIR...]
+
+Output a list of version-controlled files in DIR (default .), relative to
+SRCDIR (default .).  SRCDIR must be the top directory of a checkout.
+
+Options:
+  --help     print this help, then exit
+  --version  print version number, then exit
+  -C SRCDIR  change directory to SRCDIR before generating list
+
+Report bugs and patches to <bug-gnulib@gnu.org>.
+EOF
+    exit ;;
+
+  --version)
+    year=`echo "$scriptversion" | sed 's/[^0-9].*//'`
+    cat <<EOF
+vc-list-files $scriptversion
+Copyright (C) $year Free Software Foundation, Inc,
+License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+EOF
+    exit ;;
+
+  -C)
+    test "$2" = . || postprocess="| sed 's|^|$2/|'"
+    cd "$2" || exit 1
+    shift; shift ;;
+esac
+
+test $# = 0 && set .
+
+for dir
+do
+  if test -d .git || test -f .git; then
+    test "x$dir" = x. \
+      && dir= sed_esc= \
+      || { dir="$dir/"; sed_esc=`echo "$dir"|env sed 's,\([\\/]\),\\\\\1,g'`; }
+    # Ignore git symlinks - either they point into the tree, in which case
+    # we don't need to visit the target twice, or they point somewhere
+    # else (often into a submodule), in which case the content does not
+    # belong to this package.
+    eval exec git ls-tree -r 'HEAD:"$dir"' \
+      \| sed -n '"s/^100[^	]*./$sed_esc/p"' $postprocess
+  elif test -d .hg; then
+    eval exec hg locate '"$dir/*"' $postprocess
+  elif test -d .bzr; then
+    test "$postprocess" = '' && postprocess="| sed 's|^\./||'"
+    eval exec bzr ls -R --versioned '"$dir"' $postprocess
+  elif test -d CVS; then
+    test "$postprocess" = '' && postprocess="| sed 's|^\./||'"
+    if test -x build-aux/cvsu; then
+      eval build-aux/cvsu --find --types=AFGM '"$dir"' $postprocess
+    elif (cvsu --help) >/dev/null 2>&1; then
+      eval cvsu --find --types=AFGM '"$dir"' $postprocess
+    else
+      eval awk -F/ \''{			\
+          if (!$1 && $3 !~ /^-/) {	\
+            f=FILENAME;			\
+            if (f ~ /CVS\/Entries$/)	\
+              f = substr(f, 1, length(f)-11); \
+            print f $2;			\
+          }}'\''				\
+        `find "$dir" -name Entries -print` /dev/null' $postprocess
+    fi
+  elif test -d .svn; then
+    eval exec svn list -R '"$dir"' $postprocess
+  else
+    echo "$0: Failed to determine type of version control used in `pwd`" 1>&2
+    exit 1
+  fi
+done
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/grep/cfg.mk b/src/grep/cfg.mk
new file mode 100644
index 0000000..c787434
--- /dev/null
+++ b/src/grep/cfg.mk
@@ -0,0 +1,180 @@
+# Customize maint.mk                           -*- makefile -*-
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Cause the tool(s) built by this package to be used also when running
+# commands via e.g., "make syntax-check".  Doing this a little sooner
+# would have avoided a grep infloop bug.
+ifeq ($(build_triplet), $(host_triplet))
+export PATH := $(builddir)/src$(PATH_SEPARATOR)$(PATH)
+endif
+
+# Used in maint.mk's web-manual rule
+manual_title = GNU Grep: Print lines matching a pattern
+
+# Use the direct link.  This is guaranteed to work immediately, while
+# it can take a while for the faster mirror links to become usable.
+url_dir_list = https://ftp.gnu.org/gnu/$(PACKAGE)
+
+# Tests not to run as part of "make distcheck".
+local-checks-to-skip =			\
+  sc_texinfo_acronym
+
+# Tools used to bootstrap this package, used for "announcement".
+bootstrap-tools = autoconf,automake,gnulib
+
+# Override the default Cc: used in generating an announcement.
+announcement_Cc_ = $(translation_project_), $(PACKAGE)-devel@gnu.org
+
+# The tight_scope test gets confused about inline functions.
+# like 'to_uchar'.
+_gl_TS_unmarked_extern_functions = main usage mb_clen to_uchar dfaerror dfawarn
+
+# Now that we have better tests, make this the default.
+export VERBOSE = yes
+
+# Comparing tarball sizes compressed using different xz presets, we see
+# that -6e adds only 60 bytes to the size of the tarball, yet reduces
+# (from -9) the decompression memory requirement from 64 MiB to 9 MiB.
+# Don't be tempted by -5e, since -6 and -5 use the same dictionary size.
+# $ for i in {4,5,6,7,8,9}{e,}; do \
+#     (n=$(xz -$i < grep-2.11.tar|wc -c);echo $n $i) & done |sort -nr
+# 1236632 4
+# 1162564 5
+# 1140988 4e
+# 1139620 6
+# 1139480 7
+# 1139480 8
+# 1139480 9
+# 1129552 5e
+# 1127616 6e
+# 1127556 7e
+# 1127556 8e
+# 1127556 9e
+export XZ_OPT = -6e
+
+old_NEWS_hash = da867d7903ff4936e2ee6c173e20fb63
+
+# We prefer to spell it back-reference, as POSIX does.
+sc_prohibit_backref:
+	@prohibit=back''reference					\
+	halt='spell it "back-reference"'				\
+	  $(_sc_search_regexp)
+
+# Many m4 macros names once began with 'jm_'.
+# Make sure that none are inadvertently reintroduced.
+sc_prohibit_jm_in_m4:
+	@grep -nE 'jm_[A-Z]'						\
+		$$($(VC_LIST) m4 |grep '\.m4$$'; echo /dev/null) &&	\
+	    { echo '$(ME): do not use jm_ in m4 macro names'		\
+	      1>&2; exit 1; } || :
+
+sc_prohibit_echo_minus_en:
+	@prohibit='\<echo -[en]'					\
+	halt='do not use echo ''-e or echo ''-n; use printf instead'	\
+	  $(_sc_search_regexp)
+
+# Look for lines longer than 80 characters, except omit:
+# - program-generated long lines in diff headers,
+# - the help2man script copied from upstream,
+# - tests involving long checksum lines, and
+# - the 'pr' test cases.
+LINE_LEN_MAX = 80
+FILTER_LONG_LINES =							\
+  /^[^:]*\.diff:[^:]*:@@ / d;						\
+  \|^[^:]*TODO:| d;							\
+  \|^[^:]*man/help2man:| d;						\
+  \|^[^:]*tests/misc/sha[0-9]*sum.*\.pl[-:]| d;				\
+  \|^[^:]*tests/pr/|{ \|^[^:]*tests/pr/pr-tests:| !d; };
+sc_long_lines:
+	@files=$$($(VC_LIST_EXCEPT))					\
+	halt='line(s) with more than $(LINE_LEN_MAX) characters; reindent'; \
+	for file in $$files; do						\
+	  expand $$file | grep -nE '^.{$(LINE_LEN_MAX)}.' |		\
+	  sed -e "s|^|$$file:|" -e '$(FILTER_LONG_LINES)';		\
+	done | grep . && { msg="$$halt" $(_sc_say_and_exit) } || :
+
+# Indent only with spaces.
+sc_prohibit_tab_based_indentation:
+	@prohibit='^ *	'						\
+	halt='TAB in indentation; use only spaces'			\
+	  $(_sc_search_regexp)
+
+# Don't use "indent-tabs-mode: nil" anymore.  No longer needed.
+sc_prohibit_emacs__indent_tabs_mode__setting:
+	@prohibit='^( *[*#] *)?indent-tabs-mode:'			\
+	halt='use of emacs indent-tabs-mode: setting'			\
+	  $(_sc_search_regexp)
+
+# Ensure that the list of test file names in tests/Makefile.am is sorted.
+sc_sorted_tests:
+	@perl -0777 -ne \
+	    '/^TESTS =(.*?)^$$/ms; ($$t = $$1) =~ s/[\\\s\n]+/\n/g;print $$t' \
+	  tests/Makefile.am | sort -c
+
+# THANKS.in is a list of name/email pairs for people who are mentioned in
+# commit logs (and generated ChangeLog), but who are not also listed as an
+# author of a commit.  Name/email pairs of commit authors are automatically
+# extracted from the repository.  As a very minor factorization, when
+# someone who was initially listed only in THANKS.in later authors a commit,
+# this rule detects that their pair may now be removed from THANKS.in.
+sc_THANKS_in_duplicates:
+	@{ git log --pretty=format:%aN | sort -u;			\
+	    cut -b-36 THANKS.in | sed '/^$$/d;s/  *$$//'; }		\
+	  | sort | uniq -d | grep .					\
+	    && { echo '$(ME): remove the above names from THANKS.in'	\
+		  1>&2; exit 1; } || :
+
+# Ensure that tests don't use `cmd ... && fail=1` as that hides crashes.
+# The "exclude" expression allows common idioms like `test ... && fail=1`
+# and the 2>... portion allows commands that redirect stderr and so probably
+# independently check its contents and thus detect any crash messages.
+sc_prohibit_and_fail_1:
+	@prohibit='&& fail=1'						\
+	exclude='(stat|kill|test |EGREP|grep|compare|2> *[^/])'		\
+	halt='&& fail=1 detected. Please use: returns_ 1 ... || fail=1'	\
+	in_vc_files='^tests/'						\
+	  $(_sc_search_regexp)
+
+update-copyright-env = \
+  UPDATE_COPYRIGHT_USE_INTERVALS=1 \
+  UPDATE_COPYRIGHT_MAX_LINE_LENGTH=79
+
+include $(abs_top_srcdir)/dist-check.mk
+
+exclude_file_name_regexp--sc_bindtextdomain = \
+  ^tests/get-mb-cur-max\.c$$
+
+exclude_file_name_regexp--sc_prohibit_strcmp = /colorize-.*\.c$$
+exclude_file_name_regexp--sc_prohibit_xalloc_without_use = ^src/kwset\.c$$
+exclude_file_name_regexp--sc_prohibit_tab_based_indentation = \
+  (Makefile|\.(am|mk)$$)
+
+exclude_file_name_regexp--sc_prohibit_doubled_word = ^tests/count-newline$$
+
+exclude_file_name_regexp--sc_long_lines = ^tests/.*$$
+
+# If a test uses timeout, it must also use require_timeout_.
+# Grandfather-exempt the fedora test, since it ensures timeout works
+# as expected before using it.
+sc_timeout_prereq:
+	@$(VC_LIST_EXCEPT)						\
+	  | grep '^tests/'						\
+	  | grep -v '^tests/fedora$$'					\
+	  | xargs grep -lw timeout					\
+	  | xargs grep -FLw require_timeout_				\
+	  | $(GREP) .							\
+	  && { echo '$(ME): timeout withtout use of require_timeout_'	\
+	    1>&2; exit 1; } || :
diff --git a/src/grep/config.hin b/src/grep/config.hin
new file mode 100644
index 0000000..565f63b
--- /dev/null
+++ b/src/grep/config.hin
@@ -0,0 +1,2464 @@
+/* config.hin.  Generated from configure.ac by autoheader.  */
+
+/* CPU and C ABI indicator */
+#ifndef __i386__
+#undef __i386__
+#endif
+#ifndef __x86_64_x32__
+#undef __x86_64_x32__
+#endif
+#ifndef __x86_64__
+#undef __x86_64__
+#endif
+#ifndef __alpha__
+#undef __alpha__
+#endif
+#ifndef __arm__
+#undef __arm__
+#endif
+#ifndef __armhf__
+#undef __armhf__
+#endif
+#ifndef __arm64_ilp32__
+#undef __arm64_ilp32__
+#endif
+#ifndef __arm64__
+#undef __arm64__
+#endif
+#ifndef __hppa__
+#undef __hppa__
+#endif
+#ifndef __hppa64__
+#undef __hppa64__
+#endif
+#ifndef __ia64_ilp32__
+#undef __ia64_ilp32__
+#endif
+#ifndef __ia64__
+#undef __ia64__
+#endif
+#ifndef __m68k__
+#undef __m68k__
+#endif
+#ifndef __mips__
+#undef __mips__
+#endif
+#ifndef __mipsn32__
+#undef __mipsn32__
+#endif
+#ifndef __mips64__
+#undef __mips64__
+#endif
+#ifndef __powerpc__
+#undef __powerpc__
+#endif
+#ifndef __powerpc64__
+#undef __powerpc64__
+#endif
+#ifndef __powerpc64_elfv2__
+#undef __powerpc64_elfv2__
+#endif
+#ifndef __riscv32__
+#undef __riscv32__
+#endif
+#ifndef __riscv64__
+#undef __riscv64__
+#endif
+#ifndef __riscv32_ilp32__
+#undef __riscv32_ilp32__
+#endif
+#ifndef __riscv32_ilp32f__
+#undef __riscv32_ilp32f__
+#endif
+#ifndef __riscv32_ilp32d__
+#undef __riscv32_ilp32d__
+#endif
+#ifndef __riscv64_ilp32__
+#undef __riscv64_ilp32__
+#endif
+#ifndef __riscv64_ilp32f__
+#undef __riscv64_ilp32f__
+#endif
+#ifndef __riscv64_ilp32d__
+#undef __riscv64_ilp32d__
+#endif
+#ifndef __riscv64_lp64__
+#undef __riscv64_lp64__
+#endif
+#ifndef __riscv64_lp64f__
+#undef __riscv64_lp64f__
+#endif
+#ifndef __riscv64_lp64d__
+#undef __riscv64_lp64d__
+#endif
+#ifndef __s390__
+#undef __s390__
+#endif
+#ifndef __s390x__
+#undef __s390x__
+#endif
+#ifndef __sh__
+#undef __sh__
+#endif
+#ifndef __sparc__
+#undef __sparc__
+#endif
+#ifndef __sparc64__
+#undef __sparc64__
+#endif
+
+
+/* Define if building universal (internal helper macro) */
+#undef AC_APPLE_UNIVERSAL_BUILD
+
+/* Define to the function xargmatch calls on failures. */
+#undef ARGMATCH_DIE
+
+/* Define to the declaration of the xargmatch failure function. */
+#undef ARGMATCH_DIE_DECL
+
+/* Define to the number of bits in type 'ptrdiff_t'. */
+#undef BITSIZEOF_PTRDIFF_T
+
+/* Define to the number of bits in type 'sig_atomic_t'. */
+#undef BITSIZEOF_SIG_ATOMIC_T
+
+/* Define to the number of bits in type 'size_t'. */
+#undef BITSIZEOF_SIZE_T
+
+/* Define to the number of bits in type 'wchar_t'. */
+#undef BITSIZEOF_WCHAR_T
+
+/* Define to the number of bits in type 'wint_t'. */
+#undef BITSIZEOF_WINT_T
+
+/* Define to 1 if the `closedir' function returns void instead of int. */
+#undef CLOSEDIR_VOID
+
+/* Define to 1 if using 'alloca.c'. */
+#undef C_ALLOCA
+
+/* Define as the bit index in the word where to find bit 0 of the exponent of
+   'double'. */
+#undef DBL_EXPBIT0_BIT
+
+/* Define as the word index where to find the exponent of 'double'. */
+#undef DBL_EXPBIT0_WORD
+
+/* the name of the file descriptor member of DIR */
+#undef DIR_FD_MEMBER_NAME
+
+#ifdef DIR_FD_MEMBER_NAME
+# define DIR_TO_FD(Dir_p) ((Dir_p)->DIR_FD_MEMBER_NAME)
+#else
+# define DIR_TO_FD(Dir_p) -1
+#endif
+
+
+/* Define to 1 if // is a file system root distinct from /. */
+#undef DOUBLE_SLASH_IS_DISTINCT_ROOT
+
+/* Define if struct dirent has a member d_ino that actually works. */
+#undef D_INO_IN_DIRENT
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+#undef ENABLE_NLS
+
+/* Define this to 1 if F_DUPFD behavior does not match POSIX */
+#undef FCNTL_DUPFD_BUGGY
+
+/* Define to nothing if C supports flexible array members, and to 1 if it does
+   not. That way, with a declaration like 'struct s { int n; short
+   d[FLEXIBLE_ARRAY_MEMBER]; };', the struct hack can be used with pre-C99
+   compilers. Use 'FLEXSIZEOF (struct s, d, N * sizeof (short))' to calculate
+   the size in bytes of such a struct containing an N-element array. */
+#undef FLEXIBLE_ARRAY_MEMBER
+
+/* Define to 1 if fopen() fails to recognize a trailing slash. */
+#undef FOPEN_TRAILING_SLASH_BUG
+
+/* Define to 1 if nl_langinfo (YESEXPR) returns a non-empty string. */
+#undef FUNC_NL_LANGINFO_YESEXPR_WORKS
+
+/* Define this to 'void' or 'struct timezone' to match the system's
+   declaration of the second argument to gettimeofday. */
+#undef GETTIMEOFDAY_TIMEZONE
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module close-stream shall be considered present. */
+#undef GNULIB_CLOSE_STREAM
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module fcntl-safer shall be considered present. */
+#undef GNULIB_FCNTL_SAFER
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module fdopendir shall be considered present. */
+#undef GNULIB_FDOPENDIR
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module fd-safer-flag shall be considered present. */
+#undef GNULIB_FD_SAFER_FLAG
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module fopen-gnu shall be considered present. */
+#undef GNULIB_FOPEN_GNU
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module fscanf shall be considered present. */
+#undef GNULIB_FSCANF
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module isblank shall be considered present. */
+#undef GNULIB_ISBLANK
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module lock shall be considered present. */
+#undef GNULIB_LOCK
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module msvc-nothrow shall be considered present. */
+#undef GNULIB_MSVC_NOTHROW
+
+/* Define to 1 to disable use of VLAs */
+#undef GNULIB_NO_VLA
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module openat shall be considered present. */
+#undef GNULIB_OPENAT
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module openat-safer shall be considered present. */
+#undef GNULIB_OPENAT_SAFER
+
+/* enable some gnulib portability checks */
+#undef GNULIB_PORTCHECK
+
+/* Enable compile-time and run-time bounds-checking, and some warnings,
+      without upsetting glibc 2.15+. */
+   #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
+        && defined __OPTIMIZE__ && __OPTIMIZE__)
+   # define _FORTIFY_SOURCE 2
+   #endif
+  
+
+/* Define to 1 if printf and friends should be labeled with attribute
+   "__gnu_printf__" instead of "__printf__" */
+#undef GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module reallocarray shall be considered present. */
+#undef GNULIB_REALLOCARRAY
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module scanf shall be considered present. */
+#undef GNULIB_SCANF
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module snprintf shall be considered present. */
+#undef GNULIB_SNPRINTF
+
+/* Define to 1 if you want the FILE stream functions getc, putc, etc. to use
+   unlocked I/O if available, throughout the package. Unlocked I/O can improve
+   performance, sometimes dramatically. But unlocked I/O is safe only in
+   single-threaded programs, as well as in multithreaded programs for which
+   you can guarantee that every FILE stream, including stdin, stdout, stderr,
+   is used only in a single thread. */
+#undef GNULIB_STDIO_SINGLE_THREAD
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module strerror shall be considered present. */
+#undef GNULIB_STRERROR
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module strerror_r-posix shall be considered present. */
+#undef GNULIB_STRERROR_R_POSIX
+
+/* Define to 1 when the gnulib module accept should be tested. */
+#undef GNULIB_TEST_ACCEPT
+
+/* Define to 1 when the gnulib module bind should be tested. */
+#undef GNULIB_TEST_BIND
+
+/* Define to 1 when the gnulib module btowc should be tested. */
+#undef GNULIB_TEST_BTOWC
+
+/* Define to 1 when the gnulib module calloc-posix should be tested. */
+#undef GNULIB_TEST_CALLOC_POSIX
+
+/* Define to 1 when the gnulib module chdir should be tested. */
+#undef GNULIB_TEST_CHDIR
+
+/* Define to 1 when the gnulib module cloexec should be tested. */
+#undef GNULIB_TEST_CLOEXEC
+
+/* Define to 1 when the gnulib module close should be tested. */
+#undef GNULIB_TEST_CLOSE
+
+/* Define to 1 when the gnulib module closedir should be tested. */
+#undef GNULIB_TEST_CLOSEDIR
+
+/* Define to 1 when the gnulib module connect should be tested. */
+#undef GNULIB_TEST_CONNECT
+
+/* Define to 1 when the gnulib module dirfd should be tested. */
+#undef GNULIB_TEST_DIRFD
+
+/* Define to 1 when the gnulib module dup should be tested. */
+#undef GNULIB_TEST_DUP
+
+/* Define to 1 when the gnulib module dup2 should be tested. */
+#undef GNULIB_TEST_DUP2
+
+/* Define to 1 when the gnulib module environ should be tested. */
+#undef GNULIB_TEST_ENVIRON
+
+/* Define to 1 when the gnulib module fchdir should be tested. */
+#undef GNULIB_TEST_FCHDIR
+
+/* Define to 1 when the gnulib module fcntl should be tested. */
+#undef GNULIB_TEST_FCNTL
+
+/* Define to 1 when the gnulib module fdopen should be tested. */
+#undef GNULIB_TEST_FDOPEN
+
+/* Define to 1 when the gnulib module fdopendir should be tested. */
+#undef GNULIB_TEST_FDOPENDIR
+
+/* Define to 1 when the gnulib module fgetc should be tested. */
+#undef GNULIB_TEST_FGETC
+
+/* Define to 1 when the gnulib module fgets should be tested. */
+#undef GNULIB_TEST_FGETS
+
+/* Define to 1 when the gnulib module fnmatch should be tested. */
+#undef GNULIB_TEST_FNMATCH
+
+/* Define to 1 when the gnulib module fopen should be tested. */
+#undef GNULIB_TEST_FOPEN
+
+/* Define to 1 when the gnulib module fprintf should be tested. */
+#undef GNULIB_TEST_FPRINTF
+
+/* Define to 1 when the gnulib module fputc should be tested. */
+#undef GNULIB_TEST_FPUTC
+
+/* Define to 1 when the gnulib module fputs should be tested. */
+#undef GNULIB_TEST_FPUTS
+
+/* Define to 1 when the gnulib module fread should be tested. */
+#undef GNULIB_TEST_FREAD
+
+/* Define to 1 when the gnulib module free-posix should be tested. */
+#undef GNULIB_TEST_FREE_POSIX
+
+/* Define to 1 when the gnulib module fscanf should be tested. */
+#undef GNULIB_TEST_FSCANF
+
+/* Define to 1 when the gnulib module fstat should be tested. */
+#undef GNULIB_TEST_FSTAT
+
+/* Define to 1 when the gnulib module fstatat should be tested. */
+#undef GNULIB_TEST_FSTATAT
+
+/* Define to 1 when the gnulib module ftruncate should be tested. */
+#undef GNULIB_TEST_FTRUNCATE
+
+/* Define to 1 when the gnulib module fwrite should be tested. */
+#undef GNULIB_TEST_FWRITE
+
+/* Define to 1 when the gnulib module getc should be tested. */
+#undef GNULIB_TEST_GETC
+
+/* Define to 1 when the gnulib module getchar should be tested. */
+#undef GNULIB_TEST_GETCHAR
+
+/* Define to 1 when the gnulib module getcwd should be tested. */
+#undef GNULIB_TEST_GETCWD
+
+/* Define to 1 when the gnulib module getdtablesize should be tested. */
+#undef GNULIB_TEST_GETDTABLESIZE
+
+/* Define to 1 when the gnulib module getopt-posix should be tested. */
+#undef GNULIB_TEST_GETOPT_POSIX
+
+/* Define to 1 when the gnulib module getpagesize should be tested. */
+#undef GNULIB_TEST_GETPAGESIZE
+
+/* Define to 1 when the gnulib module gettimeofday should be tested. */
+#undef GNULIB_TEST_GETTIMEOFDAY
+
+/* Define to 1 when the gnulib module ioctl should be tested. */
+#undef GNULIB_TEST_IOCTL
+
+/* Define to 1 when the gnulib module isatty should be tested. */
+#undef GNULIB_TEST_ISATTY
+
+/* Define to 1 when the gnulib module iswblank should be tested. */
+#undef GNULIB_TEST_ISWBLANK
+
+/* Define to 1 when the gnulib module iswctype should be tested. */
+#undef GNULIB_TEST_ISWCTYPE
+
+/* Define to 1 when the gnulib module iswdigit should be tested. */
+#undef GNULIB_TEST_ISWDIGIT
+
+/* Define to 1 when the gnulib module iswxdigit should be tested. */
+#undef GNULIB_TEST_ISWXDIGIT
+
+/* Define to 1 when the gnulib module listen should be tested. */
+#undef GNULIB_TEST_LISTEN
+
+/* Define to 1 when the gnulib module localeconv should be tested. */
+#undef GNULIB_TEST_LOCALECONV
+
+/* Define to 1 when the gnulib module localename should be tested. */
+#undef GNULIB_TEST_LOCALENAME
+
+/* Define to 1 when the gnulib module lseek should be tested. */
+#undef GNULIB_TEST_LSEEK
+
+/* Define to 1 when the gnulib module lstat should be tested. */
+#undef GNULIB_TEST_LSTAT
+
+/* Define to 1 when the gnulib module malloc-posix should be tested. */
+#undef GNULIB_TEST_MALLOC_POSIX
+
+/* Define to 1 when the gnulib module mbrlen should be tested. */
+#undef GNULIB_TEST_MBRLEN
+
+/* Define to 1 when the gnulib module mbrtowc should be tested. */
+#undef GNULIB_TEST_MBRTOWC
+
+/* Define to 1 when the gnulib module mbscasecmp should be tested. */
+#undef GNULIB_TEST_MBSCASECMP
+
+/* Define to 1 when the gnulib module mbsinit should be tested. */
+#undef GNULIB_TEST_MBSINIT
+
+/* Define to 1 when the gnulib module mbslen should be tested. */
+#undef GNULIB_TEST_MBSLEN
+
+/* Define to 1 when the gnulib module mbsrtowcs should be tested. */
+#undef GNULIB_TEST_MBSRTOWCS
+
+/* Define to 1 when the gnulib module mbsstr should be tested. */
+#undef GNULIB_TEST_MBSSTR
+
+/* Define to 1 when the gnulib module mbtowc should be tested. */
+#undef GNULIB_TEST_MBTOWC
+
+/* Define to 1 when the gnulib module memchr should be tested. */
+#undef GNULIB_TEST_MEMCHR
+
+/* Define to 1 when the gnulib module mempcpy should be tested. */
+#undef GNULIB_TEST_MEMPCPY
+
+/* Define to 1 when the gnulib module memrchr should be tested. */
+#undef GNULIB_TEST_MEMRCHR
+
+/* Define to 1 when the gnulib module nanosleep should be tested. */
+#undef GNULIB_TEST_NANOSLEEP
+
+/* Define to 1 when the gnulib module nl_langinfo should be tested. */
+#undef GNULIB_TEST_NL_LANGINFO
+
+/* Define to 1 when the gnulib module open should be tested. */
+#undef GNULIB_TEST_OPEN
+
+/* Define to 1 when the gnulib module openat should be tested. */
+#undef GNULIB_TEST_OPENAT
+
+/* Define to 1 when the gnulib module opendir should be tested. */
+#undef GNULIB_TEST_OPENDIR
+
+/* Define to 1 when the gnulib module perror should be tested. */
+#undef GNULIB_TEST_PERROR
+
+/* Define to 1 when the gnulib module pipe should be tested. */
+#undef GNULIB_TEST_PIPE
+
+/* Define to 1 when the gnulib module printf should be tested. */
+#undef GNULIB_TEST_PRINTF
+
+/* Define to 1 when the gnulib module pthread_sigmask should be tested. */
+#undef GNULIB_TEST_PTHREAD_SIGMASK
+
+/* Define to 1 when the gnulib module pthread-thread should be tested. */
+#undef GNULIB_TEST_PTHREAD_THREAD
+
+/* Define to 1 when the gnulib module putc should be tested. */
+#undef GNULIB_TEST_PUTC
+
+/* Define to 1 when the gnulib module putchar should be tested. */
+#undef GNULIB_TEST_PUTCHAR
+
+/* Define to 1 when the gnulib module putenv should be tested. */
+#undef GNULIB_TEST_PUTENV
+
+/* Define to 1 when the gnulib module puts should be tested. */
+#undef GNULIB_TEST_PUTS
+
+/* Define to 1 when the gnulib module raise should be tested. */
+#undef GNULIB_TEST_RAISE
+
+/* Define to 1 when the gnulib module rawmemchr should be tested. */
+#undef GNULIB_TEST_RAWMEMCHR
+
+/* Define to 1 when the gnulib module read should be tested. */
+#undef GNULIB_TEST_READ
+
+/* Define to 1 when the gnulib module readdir should be tested. */
+#undef GNULIB_TEST_READDIR
+
+/* Define to 1 when the gnulib module reallocarray should be tested. */
+#undef GNULIB_TEST_REALLOCARRAY
+
+/* Define to 1 when the gnulib module realloc-posix should be tested. */
+#undef GNULIB_TEST_REALLOC_POSIX
+
+/* Define to 1 when the gnulib module scanf should be tested. */
+#undef GNULIB_TEST_SCANF
+
+/* Define to 1 when the gnulib module select should be tested. */
+#undef GNULIB_TEST_SELECT
+
+/* Define to 1 when the gnulib module setenv should be tested. */
+#undef GNULIB_TEST_SETENV
+
+/* Define to 1 when the gnulib module setlocale should be tested. */
+#undef GNULIB_TEST_SETLOCALE
+
+/* Define to 1 when the gnulib module setlocale_null should be tested. */
+#undef GNULIB_TEST_SETLOCALE_NULL
+
+/* Define to 1 when the gnulib module setsockopt should be tested. */
+#undef GNULIB_TEST_SETSOCKOPT
+
+/* Define to 1 when the gnulib module sigaction should be tested. */
+#undef GNULIB_TEST_SIGACTION
+
+/* Define to 1 when the gnulib module sigprocmask should be tested. */
+#undef GNULIB_TEST_SIGPROCMASK
+
+/* Define to 1 when the gnulib module sleep should be tested. */
+#undef GNULIB_TEST_SLEEP
+
+/* Define to 1 when the gnulib module snprintf should be tested. */
+#undef GNULIB_TEST_SNPRINTF
+
+/* Define to 1 when the gnulib module socket should be tested. */
+#undef GNULIB_TEST_SOCKET
+
+/* Define to 1 when the gnulib module stat should be tested. */
+#undef GNULIB_TEST_STAT
+
+/* Define to 1 when the gnulib module stpcpy should be tested. */
+#undef GNULIB_TEST_STPCPY
+
+/* Define to 1 when the gnulib module strdup should be tested. */
+#undef GNULIB_TEST_STRDUP
+
+/* Define to 1 when the gnulib module strerror should be tested. */
+#undef GNULIB_TEST_STRERROR
+
+/* Define to 1 when the gnulib module strerror_r should be tested. */
+#undef GNULIB_TEST_STRERROR_R
+
+/* Define to 1 when the gnulib module strnlen should be tested. */
+#undef GNULIB_TEST_STRNLEN
+
+/* Define to 1 when the gnulib module strstr should be tested. */
+#undef GNULIB_TEST_STRSTR
+
+/* Define to 1 when the gnulib module strtoll should be tested. */
+#undef GNULIB_TEST_STRTOLL
+
+/* Define to 1 when the gnulib module strtoull should be tested. */
+#undef GNULIB_TEST_STRTOULL
+
+/* Define to 1 when the gnulib module symlink should be tested. */
+#undef GNULIB_TEST_SYMLINK
+
+/* Define to 1 when the gnulib module unsetenv should be tested. */
+#undef GNULIB_TEST_UNSETENV
+
+/* Define to 1 when the gnulib module vfprintf should be tested. */
+#undef GNULIB_TEST_VFPRINTF
+
+/* Define to 1 when the gnulib module vprintf should be tested. */
+#undef GNULIB_TEST_VPRINTF
+
+/* Define to 1 when the gnulib module wcrtomb should be tested. */
+#undef GNULIB_TEST_WCRTOMB
+
+/* Define to 1 when the gnulib module wctob should be tested. */
+#undef GNULIB_TEST_WCTOB
+
+/* Define to 1 when the gnulib module wctomb should be tested. */
+#undef GNULIB_TEST_WCTOMB
+
+/* Define to 1 when the gnulib module wcwidth should be tested. */
+#undef GNULIB_TEST_WCWIDTH
+
+/* Define to 1 when the gnulib module wmemchr should be tested. */
+#undef GNULIB_TEST_WMEMCHR
+
+/* Define to 1 when the gnulib module wmempcpy should be tested. */
+#undef GNULIB_TEST_WMEMPCPY
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module unistr/u8-mbtoucr shall be considered present. */
+#undef GNULIB_UNISTR_U8_MBTOUCR
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module unistr/u8-uctomb shall be considered present. */
+#undef GNULIB_UNISTR_U8_UCTOMB
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module xalloc shall be considered present. */
+#undef GNULIB_XALLOC
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module xalloc-die shall be considered present. */
+#undef GNULIB_XALLOC_DIE
+
+/* We are building grep */
+#undef GREP
+
+/* Define to 1 if you have 'alloca' after including <alloca.h>, a header that
+   may be supplied by this distribution. */
+#undef HAVE_ALLOCA
+
+/* Define to 1 if <alloca.h> works. */
+#undef HAVE_ALLOCA_H
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#undef HAVE_ARPA_INET_H
+
+/* Define to 1 if you have the <bp-sym.h> header file. */
+#undef HAVE_BP_SYM_H
+
+/* Define to 1 if you have the `btowc' function. */
+#undef HAVE_BTOWC
+
+/* Define to 1 if nanosleep mishandles large arguments. */
+#undef HAVE_BUG_BIG_NANOSLEEP
+
+/* Define to 1 if you have the `catgets' function. */
+#undef HAVE_CATGETS
+
+/* Define to 1 if you have the Mac OS X function
+   CFLocaleCopyPreferredLanguages in the CoreFoundation framework. */
+#undef HAVE_CFLOCALECOPYPREFERREDLANGUAGES
+
+/* Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in
+   the CoreFoundation framework. */
+#undef HAVE_CFPREFERENCESCOPYAPPVALUE
+
+/* Define to 1 if you have the `closedir' function. */
+#undef HAVE_CLOSEDIR
+
+/* Define to 1 if you have the <crtdefs.h> header file. */
+#undef HAVE_CRTDEFS_H
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+#undef HAVE_DCGETTEXT
+
+/* Define to 1 if you have the declaration of `alarm', and to 0 if you don't.
+   */
+#undef HAVE_DECL_ALARM
+
+/* Define to 1 if you have the declaration of `clearerr_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_CLEARERR_UNLOCKED
+
+/* Define to 1 if you have the declaration of `dirfd', and to 0 if you don't.
+   */
+#undef HAVE_DECL_DIRFD
+
+/* Define to 1 if you have the declaration of `ecvt', and to 0 if you don't.
+   */
+#undef HAVE_DECL_ECVT
+
+/* Define to 1 if you have the declaration of `execvpe', and to 0 if you
+   don't. */
+#undef HAVE_DECL_EXECVPE
+
+/* Define to 1 if you have the declaration of `fchdir', and to 0 if you don't.
+   */
+#undef HAVE_DECL_FCHDIR
+
+/* Define to 1 if you have the declaration of `fcloseall', and to 0 if you
+   don't. */
+#undef HAVE_DECL_FCLOSEALL
+
+/* Define to 1 if you have the declaration of `fcvt', and to 0 if you don't.
+   */
+#undef HAVE_DECL_FCVT
+
+/* Define to 1 if you have the declaration of `fdopendir', and to 0 if you
+   don't. */
+#undef HAVE_DECL_FDOPENDIR
+
+/* Define to 1 if you have the declaration of `feof_unlocked', and to 0 if you
+   don't. */
+#undef HAVE_DECL_FEOF_UNLOCKED
+
+/* Define to 1 if you have the declaration of `ferror_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FERROR_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fflush_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FFLUSH_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fgets_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FGETS_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fputc_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FPUTC_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fputs_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FPUTS_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fread_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FREAD_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fwrite_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FWRITE_UNLOCKED
+
+/* Define to 1 if you have the declaration of `gcvt', and to 0 if you don't.
+   */
+#undef HAVE_DECL_GCVT
+
+/* Define to 1 if you have the declaration of `getchar_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_GETCHAR_UNLOCKED
+
+/* Define to 1 if you have the declaration of `getc_unlocked', and to 0 if you
+   don't. */
+#undef HAVE_DECL_GETC_UNLOCKED
+
+/* Define to 1 if you have the declaration of `getdtablesize', and to 0 if you
+   don't. */
+#undef HAVE_DECL_GETDTABLESIZE
+
+/* Define to 1 if you have the declaration of `inet_pton', and to 0 if you
+   don't. */
+#undef HAVE_DECL_INET_PTON
+
+/* Define to 1 if you have the declaration of `isblank', and to 0 if you
+   don't. */
+#undef HAVE_DECL_ISBLANK
+
+/* Define to 1 if you have the declaration of `iswblank', and to 0 if you
+   don't. */
+#undef HAVE_DECL_ISWBLANK
+
+/* Define to 1 if you have the declaration of `mbrlen', and to 0 if you don't.
+   */
+#undef HAVE_DECL_MBRLEN
+
+/* Define to 1 if you have the declaration of `mbrtowc', and to 0 if you
+   don't. */
+#undef HAVE_DECL_MBRTOWC
+
+/* Define to 1 if you have the declaration of `mbsinit', and to 0 if you
+   don't. */
+#undef HAVE_DECL_MBSINIT
+
+/* Define to 1 if you have the declaration of `mbsrtowcs', and to 0 if you
+   don't. */
+#undef HAVE_DECL_MBSRTOWCS
+
+/* Define to 1 if you have the declaration of `memrchr', and to 0 if you
+   don't. */
+#undef HAVE_DECL_MEMRCHR
+
+/* Define to 1 if you have the declaration of `program_invocation_name', and
+   to 0 if you don't. */
+#undef HAVE_DECL_PROGRAM_INVOCATION_NAME
+
+/* Define to 1 if you have the declaration of `program_invocation_short_name',
+   and to 0 if you don't. */
+#undef HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME
+
+/* Define to 1 if you have the declaration of `putchar_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_PUTCHAR_UNLOCKED
+
+/* Define to 1 if you have the declaration of `putc_unlocked', and to 0 if you
+   don't. */
+#undef HAVE_DECL_PUTC_UNLOCKED
+
+/* Define to 1 if you have the declaration of `setenv', and to 0 if you don't.
+   */
+#undef HAVE_DECL_SETENV
+
+/* Define to 1 if you have the declaration of `sleep', and to 0 if you don't.
+   */
+#undef HAVE_DECL_SLEEP
+
+/* Define to 1 if you have the declaration of `snprintf', and to 0 if you
+   don't. */
+#undef HAVE_DECL_SNPRINTF
+
+/* Define to 1 if you have the declaration of `strdup', and to 0 if you don't.
+   */
+#undef HAVE_DECL_STRDUP
+
+/* Define to 1 if you have the declaration of `strerror_r', and to 0 if you
+   don't. */
+#undef HAVE_DECL_STRERROR_R
+
+/* Define to 1 if you have the declaration of `strnlen', and to 0 if you
+   don't. */
+#undef HAVE_DECL_STRNLEN
+
+/* Define to 1 if you have the declaration of `strtoimax', and to 0 if you
+   don't. */
+#undef HAVE_DECL_STRTOIMAX
+
+/* Define to 1 if you have the declaration of `strtoll', and to 0 if you
+   don't. */
+#undef HAVE_DECL_STRTOLL
+
+/* Define to 1 if you have the declaration of `strtoull', and to 0 if you
+   don't. */
+#undef HAVE_DECL_STRTOULL
+
+/* Define to 1 if you have the declaration of `strtoumax', and to 0 if you
+   don't. */
+#undef HAVE_DECL_STRTOUMAX
+
+/* Define to 1 if you have the declaration of `towlower', and to 0 if you
+   don't. */
+#undef HAVE_DECL_TOWLOWER
+
+/* Define to 1 if you have the declaration of `unsetenv', and to 0 if you
+   don't. */
+#undef HAVE_DECL_UNSETENV
+
+/* Define to 1 if you have the declaration of `wcrtomb', and to 0 if you
+   don't. */
+#undef HAVE_DECL_WCRTOMB
+
+/* Define to 1 if you have the declaration of `wcsdup', and to 0 if you don't.
+   */
+#undef HAVE_DECL_WCSDUP
+
+/* Define to 1 if you have the declaration of `wctob', and to 0 if you don't.
+   */
+#undef HAVE_DECL_WCTOB
+
+/* Define to 1 if you have the declaration of `wcwidth', and to 0 if you
+   don't. */
+#undef HAVE_DECL_WCWIDTH
+
+/* Define to 1 if you have the declaration of `_putenv', and to 0 if you
+   don't. */
+#undef HAVE_DECL__PUTENV
+
+/* Define to 1 if you have the declaration of `_snprintf', and to 0 if you
+   don't. */
+#undef HAVE_DECL__SNPRINTF
+
+/* Define to 1 if you have the declaration of `__argv', and to 0 if you don't.
+   */
+#undef HAVE_DECL___ARGV
+
+/* Define to 1 if you have the declaration of `__fpending', and to 0 if you
+   don't. */
+#undef HAVE_DECL___FPENDING
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#undef HAVE_DIRENT_H
+
+/* Define to 1 if you have the `dirfd' function. */
+#undef HAVE_DIRFD
+
+/* Define to 1 if you have the `duplocale' function. */
+#undef HAVE_DUPLOCALE
+
+/* Define if you have the declaration of environ. */
+#undef HAVE_ENVIRON_DECL
+
+/* Define if the locale_t type contains insufficient information, as on
+   OpenBSD. */
+#undef HAVE_FAKE_LOCALES
+
+/* Define to 1 if you have the `fchdir' function. */
+#undef HAVE_FCHDIR
+
+/* Define to 1 if you have the `fcntl' function. */
+#undef HAVE_FCNTL
+
+/* Define to 1 if you have the `fdopendir' function. */
+#undef HAVE_FDOPENDIR
+
+/* Define to 1 if you have the <features.h> header file. */
+#undef HAVE_FEATURES_H
+
+/* Define to 1 if you have the `fnmatch' function. */
+#undef HAVE_FNMATCH
+
+/* Define to 1 if you have the <fnmatch.h> header file. */
+#undef HAVE_FNMATCH_H
+
+/* Define to 1 if you have the `freelocale' function. */
+#undef HAVE_FREELOCALE
+
+/* Define if the 'free' function is guaranteed to preserve errno. */
+#undef HAVE_FREE_POSIX
+
+/* Define to 1 if you have the `fstatat' function. */
+#undef HAVE_FSTATAT
+
+/* Define to 1 if you have the `fstatfs' function. */
+#undef HAVE_FSTATFS
+
+/* Define to 1 if you have the `ftruncate' function. */
+#undef HAVE_FTRUNCATE
+
+/* Define to 1 if you have the `getdtablesize' function. */
+#undef HAVE_GETDTABLESIZE
+
+/* Define to 1 if you have the `getexecname' function. */
+#undef HAVE_GETEXECNAME
+
+/* Define to 1 if you have the `getlocalename_l' function. */
+#undef HAVE_GETLOCALENAME_L
+
+/* Define to 1 if you have the <getopt.h> header file. */
+#undef HAVE_GETOPT_H
+
+/* Define to 1 if you have the `getopt_long_only' function. */
+#undef HAVE_GETOPT_LONG_ONLY
+
+/* Define to 1 if you have the `getprogname' function. */
+#undef HAVE_GETPROGNAME
+
+/* Define to 1 if you have the `getrlimit' function. */
+#undef HAVE_GETRLIMIT
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+#undef HAVE_GETTEXT
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#undef HAVE_GETTIMEOFDAY
+
+/* Define if the uselocale exists, may be safely called, and returns
+   sufficient information. */
+#undef HAVE_GOOD_USELOCALE
+
+/* Define if you have the iconv() function and it works. */
+#undef HAVE_ICONV
+
+/* Define to 1 if you have the <iconv.h> header file. */
+#undef HAVE_ICONV_H
+
+/* Define to 1 if you have the `inet_pton' function. */
+#undef HAVE_INET_PTON
+
+/* Define to 1 if the compiler supports one of the keywords 'inline',
+   '__inline__', '__inline' and effectively inlines functions marked as such.
+   */
+#undef HAVE_INLINE
+
+/* Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>. */
+#undef HAVE_INTMAX_T
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define if <inttypes.h> exists, doesn't clash with <sys/types.h>, and
+   declares uintmax_t. */
+#undef HAVE_INTTYPES_H_WITH_UINTMAX
+
+/* Define to 1 if you have the `ioctl' function. */
+#undef HAVE_IOCTL
+
+/* Define to 1 if <sys/socket.h> defines AF_INET. */
+#undef HAVE_IPV4
+
+/* Define to 1 if <sys/socket.h> defines AF_INET6. */
+#undef HAVE_IPV6
+
+/* Define to 1 if you have the `isascii' function. */
+#undef HAVE_ISASCII
+
+/* Define to 1 if you have the `isblank' function. */
+#undef HAVE_ISBLANK
+
+/* Define to 1 if you have the `iswblank' function. */
+#undef HAVE_ISWBLANK
+
+/* Define to 1 if you have the `iswcntrl' function. */
+#undef HAVE_ISWCNTRL
+
+/* Define to 1 if you have the `iswctype' function. */
+#undef HAVE_ISWCTYPE
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+#undef HAVE_LANGINFO_CODESET
+
+/* Define to 1 if you have the <langinfo.h> header file. */
+#undef HAVE_LANGINFO_H
+
+/* Define if your <locale.h> file defines LC_MESSAGES. */
+#undef HAVE_LC_MESSAGES
+
+/* Define to 1 if you have the <libintl.h> header file. */
+#undef HAVE_LIBINTL_H
+
+/* Define to 1 if you have the Perl Compatible Regular Expressions library
+   (-lpcre). */
+#undef HAVE_LIBPCRE
+
+/* Define if you have the libsigsegv library. */
+#undef HAVE_LIBSIGSEGV
+
+/* Define to 1 if you have the <limits.h> header file. */
+#undef HAVE_LIMITS_H
+
+/* Define to 1 if the system has the type 'long long int'. */
+#undef HAVE_LONG_LONG_INT
+
+/* Define to 1 if you have the `lstat' function. */
+#undef HAVE_LSTAT
+
+/* Define to 1 if you have the <malloc.h> header file. */
+#undef HAVE_MALLOC_H
+
+/* Define if malloc, realloc, and calloc set errno on allocation failure. */
+#undef HAVE_MALLOC_POSIX
+
+/* Define to 1 if mmap()'s MAP_ANONYMOUS flag is available after including
+   config.h and <sys/mman.h>. */
+#undef HAVE_MAP_ANONYMOUS
+
+/* Define to 1 if you have the `mbrlen' function. */
+#undef HAVE_MBRLEN
+
+/* Define to 1 if you have the `mbrtowc' function. */
+#undef HAVE_MBRTOWC
+
+/* Define to 1 if you have the `mbsinit' function. */
+#undef HAVE_MBSINIT
+
+/* Define to 1 if you have the `mbslen' function. */
+#undef HAVE_MBSLEN
+
+/* Define to 1 if you have the `mbsrtowcs' function. */
+#undef HAVE_MBSRTOWCS
+
+/* Define to 1 if <wchar.h> declares mbstate_t. */
+#undef HAVE_MBSTATE_T
+
+/* Define to 1 if you have the `mbtowc' function. */
+#undef HAVE_MBTOWC
+
+/* Define to 1 if you have the `mempcpy' function. */
+#undef HAVE_MEMPCPY
+
+/* Define to 1 if you have the `memrchr' function. */
+#undef HAVE_MEMRCHR
+
+/* Define to 1 if you have the <minix/config.h> header file. */
+#undef HAVE_MINIX_CONFIG_H
+
+/* Define to 1 if <limits.h> defines the MIN and MAX macros. */
+#undef HAVE_MINMAX_IN_LIMITS_H
+
+/* Define to 1 if <sys/param.h> defines the MIN and MAX macros. */
+#undef HAVE_MINMAX_IN_SYS_PARAM_H
+
+/* Define to 1 if you have the `mprotect' function. */
+#undef HAVE_MPROTECT
+
+/* Define to 1 on MSVC platforms that have the "invalid parameter handler"
+   concept. */
+#undef HAVE_MSVC_INVALID_PARAMETER_HANDLER
+
+/* Define if the locale_t type does not contain the name of each locale
+   category. */
+#undef HAVE_NAMELESS_LOCALES
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+#undef HAVE_NDIR_H
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#undef HAVE_NETDB_H
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#undef HAVE_NETINET_IN_H
+
+/* Define to 1 if you have the `newlocale' function. */
+#undef HAVE_NEWLOCALE
+
+/* Define to 1 if you have the `nl_langinfo' function. */
+#undef HAVE_NL_LANGINFO
+
+/* Define to 1 if the system has obstacks that work with any size object. */
+#undef HAVE_OBSTACK
+
+/* Define to 1 if you have the `openat' function. */
+#undef HAVE_OPENAT
+
+/* Define to 1 if you have the `opendir' function. */
+#undef HAVE_OPENDIR
+
+/* Define to 1 if you have the <OS.h> header file. */
+#undef HAVE_OS_H
+
+/* Define to 1 if you have the `pipe' function. */
+#undef HAVE_PIPE
+
+/* Define if you have the <pthread.h> header and the POSIX threads API. */
+#undef HAVE_PTHREAD_API
+
+/* Define to 1 if you have the `pthread_atfork' function. */
+#undef HAVE_PTHREAD_ATFORK
+
+/* Define to 1 if you have the <pthread.h> header file. */
+#undef HAVE_PTHREAD_H
+
+/* Define if the <pthread.h> defines PTHREAD_MUTEX_RECURSIVE. */
+#undef HAVE_PTHREAD_MUTEX_RECURSIVE
+
+/* Define if the POSIX multithreading library has read/write locks. */
+#undef HAVE_PTHREAD_RWLOCK
+
+/* Define if the 'pthread_rwlock_rdlock' function prefers a writer to a
+   reader. */
+#undef HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER
+
+/* Define to 1 if the pthread_sigmask function can be used (despite bugs). */
+#undef HAVE_PTHREAD_SIGMASK
+
+/* Define to 1 if the system has the type `pthread_spinlock_t'. */
+#undef HAVE_PTHREAD_SPINLOCK_T
+
+/* Define to 1 if the system has the type `pthread_t'. */
+#undef HAVE_PTHREAD_T
+
+/* Define to 1 if you have the `raise' function. */
+#undef HAVE_RAISE
+
+/* Define to 1 if you have the `rawmemchr' function. */
+#undef HAVE_RAWMEMCHR
+
+/* Define to 1 if you have the `readdir' function. */
+#undef HAVE_READDIR
+
+/* Define to 1 if you have the `reallocarray' function. */
+#undef HAVE_REALLOCARRAY
+
+/* Define to 1 if the system has the type `sa_family_t'. */
+#undef HAVE_SA_FAMILY_T
+
+/* Define to 1 if you have the <sched.h> header file. */
+#undef HAVE_SCHED_H
+
+/* Define to 1 if you have the <sdkddkver.h> header file. */
+#undef HAVE_SDKDDKVER_H
+
+/* Define to 1 if you have the <search.h> header file. */
+#undef HAVE_SEARCH_H
+
+/* Define to 1 if you have the `setdtablesize' function. */
+#undef HAVE_SETDTABLESIZE
+
+/* Define to 1 if you have the `setenv' function. */
+#undef HAVE_SETENV
+
+/* Define to 1 if you have the `setlocale' function. */
+#undef HAVE_SETLOCALE
+
+/* Define to 1 if you have the `setrlimit' function. */
+#undef HAVE_SETRLIMIT
+
+/* Define to 1 if you have the `shutdown' function. */
+#undef HAVE_SHUTDOWN
+
+/* Define to 1 if you have the `sigaction' function. */
+#undef HAVE_SIGACTION
+
+/* Define to 1 if you have the `sigaltstack' function. */
+#undef HAVE_SIGALTSTACK
+
+/* Define to 1 if the system has the type `siginfo_t'. */
+#undef HAVE_SIGINFO_T
+
+/* Define to 1 if you have the `siginterrupt' function. */
+#undef HAVE_SIGINTERRUPT
+
+/* Define to 1 if 'sig_atomic_t' is a signed integer type. */
+#undef HAVE_SIGNED_SIG_ATOMIC_T
+
+/* Define to 1 if 'wchar_t' is a signed integer type. */
+#undef HAVE_SIGNED_WCHAR_T
+
+/* Define to 1 if 'wint_t' is a signed integer type. */
+#undef HAVE_SIGNED_WINT_T
+
+/* Define to 1 if the system has the type `sigset_t'. */
+#undef HAVE_SIGSET_T
+
+/* Define to 1 if you have the `sleep' function. */
+#undef HAVE_SLEEP
+
+/* Define to 1 if you have the `snprintf' function. */
+#undef HAVE_SNPRINTF
+
+/* Define if the return value of the snprintf function is the number of of
+   bytes (excluding the terminating NUL) that would have been produced if the
+   buffer had been large enough. */
+#undef HAVE_SNPRINTF_RETVAL_C99
+
+/* Define if the string produced by the snprintf function is always NUL
+   terminated. */
+#undef HAVE_SNPRINTF_TRUNCATION_C99
+
+/* Define if the locale_t type is as on Solaris 11.4. */
+#undef HAVE_SOLARIS114_LOCALES
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define if <stdint.h> exists, doesn't clash with <sys/types.h>, and declares
+   uintmax_t. */
+#undef HAVE_STDINT_H_WITH_UINTMAX
+
+/* Define to 1 if you have the <stdio_ext.h> header file. */
+#undef HAVE_STDIO_EXT_H
+
+/* Define to 1 if you have the <stdio.h> header file. */
+#undef HAVE_STDIO_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the `stpcpy' function. */
+#undef HAVE_STPCPY
+
+/* Define to 1 if you have the `strerror_r' function. */
+#undef HAVE_STRERROR_R
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the `strnlen' function. */
+#undef HAVE_STRNLEN
+
+/* Define to 1 if you have the `strtoimax' function. */
+#undef HAVE_STRTOIMAX
+
+/* Define to 1 if you have the `strtoll' function. */
+#undef HAVE_STRTOLL
+
+/* Define to 1 if you have the `strtoull' function. */
+#undef HAVE_STRTOULL
+
+/* Define to 1 if you have the `strtoumax' function. */
+#undef HAVE_STRTOUMAX
+
+/* Define if there is a member named d_type in the struct describing directory
+   headers. */
+#undef HAVE_STRUCT_DIRENT_D_TYPE
+
+/* Define to 1 if `decimal_point' is a member of `struct lconv'. */
+#undef HAVE_STRUCT_LCONV_DECIMAL_POINT
+
+/* Define to 1 if `sa_sigaction' is a member of `struct sigaction'. */
+#undef HAVE_STRUCT_SIGACTION_SA_SIGACTION
+
+/* Define to 1 if the system has the type `struct sockaddr_storage'. */
+#undef HAVE_STRUCT_SOCKADDR_STORAGE
+
+/* Define to 1 if `ss_family' is a member of `struct sockaddr_storage'. */
+#undef HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY
+
+/* Define to 1 if `f_type' is a member of `struct statfs'. */
+#undef HAVE_STRUCT_STATFS_F_TYPE
+
+/* Define to 1 if `st_atimensec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIMENSEC
+
+/* Define to 1 if `st_atimespec.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC
+
+/* Define to 1 if `st_atim.st__tim.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC
+
+/* Define to 1 if `st_atim.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
+
+/* Define to 1 if `st_birthtimensec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC
+
+/* Define to 1 if `st_birthtimespec.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC
+
+/* Define to 1 if `st_birthtim.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC
+
+/* Define to 1 if you have the `symlink' function. */
+#undef HAVE_SYMLINK
+
+/* Define to 1 if you have the <sys/bitypes.h> header file. */
+#undef HAVE_SYS_BITYPES_H
+
+/* Define to 1 if you have the <sys/cdefs.h> header file. */
+#undef HAVE_SYS_CDEFS_H
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+#undef HAVE_SYS_DIR_H
+
+/* Define to 1 if you have the <sys/inttypes.h> header file. */
+#undef HAVE_SYS_INTTYPES_H
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#undef HAVE_SYS_IOCTL_H
+
+/* Define to 1 if you have the <sys/mman.h> header file. */
+#undef HAVE_SYS_MMAN_H
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+#undef HAVE_SYS_NDIR_H
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#undef HAVE_SYS_PARAM_H
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#undef HAVE_SYS_SELECT_H
+
+/* Define to 1 if you have the <sys/single_threaded.h> header file. */
+#undef HAVE_SYS_SINGLE_THREADED_H
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#undef HAVE_SYS_SOCKET_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#undef HAVE_SYS_TIME_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#undef HAVE_SYS_UIO_H
+
+/* Define to 1 if you have the <sys/vfs.h> header file. */
+#undef HAVE_SYS_VFS_H
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+#undef HAVE_SYS_WAIT_H
+
+/* Define to 1 if you have the `thrd_create' function. */
+#undef HAVE_THRD_CREATE
+
+/* Define to 1 if you have the <threads.h> header file. */
+#undef HAVE_THREADS_H
+
+/* Define to 1 if you have the `towlower' function. */
+#undef HAVE_TOWLOWER
+
+/* Define to 1 if you have the `tsearch' function. */
+#undef HAVE_TSEARCH
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to 1 if you have the `unsetenv' function. */
+#undef HAVE_UNSETENV
+
+/* Define to 1 if the system has the type 'unsigned long long int'. */
+#undef HAVE_UNSIGNED_LONG_LONG_INT
+
+/* Define to 1 if you have the `uselocale' function. */
+#undef HAVE_USELOCALE
+
+/* Define if you have a global __progname variable */
+#undef HAVE_VAR___PROGNAME
+
+/* Define to 1 if you have the `vasnprintf' function. */
+#undef HAVE_VASNPRINTF
+
+/* Define to 1 or 0, depending whether the compiler supports simple visibility
+   declarations. */
+#undef HAVE_VISIBILITY
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#undef HAVE_WCHAR_H
+
+/* Define if you have the 'wchar_t' type. */
+#undef HAVE_WCHAR_T
+
+/* Define to 1 if you have the `wcrtomb' function. */
+#undef HAVE_WCRTOMB
+
+/* Define to 1 if you have the `wcslen' function. */
+#undef HAVE_WCSLEN
+
+/* Define to 1 if you have the `wcsnlen' function. */
+#undef HAVE_WCSNLEN
+
+/* Define to 1 if you have the `wctob' function. */
+#undef HAVE_WCTOB
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#undef HAVE_WCTYPE_H
+
+/* Define to 1 if you have the `wcwidth' function. */
+#undef HAVE_WCWIDTH
+
+/* Define to 1 if the compiler and linker support weak declarations of
+   symbols. */
+#undef HAVE_WEAK_SYMBOLS
+
+/* Define to 1 if you have the <winsock2.h> header file. */
+#undef HAVE_WINSOCK2_H
+
+/* Define if you have the 'wint_t' type. */
+#undef HAVE_WINT_T
+
+/* Define to 1 if you have the `wmempcpy' function. */
+#undef HAVE_WMEMPCPY
+
+/* Define to 1 if fstatat (..., 0) works. For example, it does not work in AIX
+   7.1. */
+#undef HAVE_WORKING_FSTATAT_ZERO_FLAG
+
+/* Define to 1 if O_NOATIME works. */
+#undef HAVE_WORKING_O_NOATIME
+
+/* Define to 1 if O_NOFOLLOW works. */
+#undef HAVE_WORKING_O_NOFOLLOW
+
+/* Define if you have the sigaltstack() function and it works. */
+#undef HAVE_WORKING_SIGALTSTACK
+
+/* Define if the uselocale function exists and may safely be called. */
+#undef HAVE_WORKING_USELOCALE
+
+/* Define to 1 if you have the <ws2tcpip.h> header file. */
+#undef HAVE_WS2TCPIP_H
+
+/* Define to 1 if you have the <xlocale.h> header file. */
+#undef HAVE_XLOCALE_H
+
+/* Define to 1 if the system has the type `_Bool'. */
+#undef HAVE__BOOL
+
+/* Define to 1 if you have the `_chsize' function. */
+#undef HAVE__CHSIZE
+
+/* Define to 1 if you have the `_set_invalid_parameter_handler' function. */
+#undef HAVE__SET_INVALID_PARAMETER_HANDLER
+
+/* Define to 1 if the compiler supports __builtin_expect,
+   and to 2 if <builtins.h> does.  */
+#undef HAVE___BUILTIN_EXPECT
+#ifndef HAVE___BUILTIN_EXPECT
+# define __builtin_expect(e, c) (e)
+#elif HAVE___BUILTIN_EXPECT == 2
+# include <builtins.h>
+#endif
+    
+
+/* Define to 1 if the system has the type `__fsword_t'. */
+#undef HAVE___FSWORD_T
+
+/* Define to 1 if the compiler supports the keyword '__inline'. */
+#undef HAVE___INLINE
+
+/* Define to 1 if you have the `__xpg_strerror_r' function. */
+#undef HAVE___XPG_STRERROR_R
+
+/* Define as const if the declaration of iconv() needs const. */
+#undef ICONV_CONST
+
+/* Define to a symbolic name denoting the flavor of iconv_open()
+   implementation. */
+#undef ICONV_FLAVOR
+
+/* Define if localename.c overrides newlocale(), duplocale(), freelocale(). */
+#undef LOCALENAME_ENHANCE_LOCALE_FUNCS
+
+/* Define to 1 if lseek does not detect pipes. */
+#undef LSEEK_PIPE_BROKEN
+
+/* Define to 1 if 'lstat' dereferences a symlink specified with a trailing
+   slash. */
+#undef LSTAT_FOLLOWS_SLASHED_SYMLINK
+
+/* If malloc(0) is != NULL, define this to 1. Otherwise define this to 0. */
+#undef MALLOC_0_IS_NONNULL
+
+/* Define to a substitute value for mmap()'s MAP_ANONYMOUS flag. */
+#undef MAP_ANONYMOUS
+
+/* Define if the mbrtowc function does not return (size_t) -2 for empty input.
+   */
+#undef MBRTOWC_EMPTY_INPUT_BUG
+
+/* Define if the mbrtowc function may signal encoding errors in the C locale.
+   */
+#undef MBRTOWC_IN_C_LOCALE_MAYBE_EILSEQ
+
+/* Define if the mbrtowc function has the NULL pwc argument bug. */
+#undef MBRTOWC_NULL_ARG1_BUG
+
+/* Define if the mbrtowc function has the NULL string argument bug. */
+#undef MBRTOWC_NULL_ARG2_BUG
+
+/* Define if the mbrtowc function does not return 0 for a NUL character. */
+#undef MBRTOWC_NUL_RETVAL_BUG
+
+/* Define if the mbrtowc function returns a wrong return value. */
+#undef MBRTOWC_RETVAL_BUG
+
+/* Define if the mbrtowc function stores a wide character when reporting
+   incomplete input. */
+#undef MBRTOWC_STORES_INCOMPLETE_BUG
+
+/* Use GNU style printf and scanf.  */
+#ifndef __USE_MINGW_ANSI_STDIO
+# undef __USE_MINGW_ANSI_STDIO
+#endif
+
+
+/* Define to 1 on musl libc. */
+#undef MUSL_LIBC
+
+/* Define to 1 if assertions should be disabled. */
+#undef NDEBUG
+
+/* Define to 1 to enable general improvements of setlocale. */
+#undef NEED_SETLOCALE_IMPROVED
+
+/* Define to 1 to enable a multithread-safety fix of setlocale. */
+#undef NEED_SETLOCALE_MTSAFE
+
+/* Define to 1 if nl_langinfo is multithread-safe. */
+#undef NL_LANGINFO_MTSAFE
+
+/* Define to 1 if open() fails to recognize a trailing slash. */
+#undef OPEN_TRAILING_SLASH_BUG
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* String identifying the packager of this software */
+#undef PACKAGE_PACKAGER
+
+/* Packager info for bug reports (URL/e-mail/...) */
+#undef PACKAGE_PACKAGER_BUG_REPORTS
+
+/* Packager-specific version information */
+#undef PACKAGE_PACKAGER_VERSION
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define to the type that is the result of default argument promotions of
+   type mode_t. */
+#undef PROMOTED_MODE_T
+
+/* Define if pthread_create is an inline function. */
+#undef PTHREAD_CREATE_IS_INLINE
+
+/* Define if the pthread_in_use() detection is hard. */
+#undef PTHREAD_IN_USE_DETECTION_HARD
+
+/* Define to 1 if pthread_sigmask(), when it fails, returns -1 and sets errno.
+   */
+#undef PTHREAD_SIGMASK_FAILS_WITH_ERRNO
+
+/* Define to 1 if pthread_sigmask may return 0 and have no effect. */
+#undef PTHREAD_SIGMASK_INEFFECTIVE
+
+/* Define to 1 if pthread_sigmask() unblocks signals incorrectly. */
+#undef PTHREAD_SIGMASK_UNBLOCK_BUG
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+   'ptrdiff_t'. */
+#undef PTRDIFF_T_SUFFIX
+
+/* Define to 1 if gnulib's dirfd() replacement is used. */
+#undef REPLACE_DIRFD
+
+/* Define to 1 if gnulib's fchdir() replacement is used. */
+#undef REPLACE_FCHDIR
+
+/* Define to 1 if stat needs help when passed a file name with a trailing
+   slash */
+#undef REPLACE_FUNC_STAT_FILE
+
+/* Define if nl_langinfo exists but is overridden by gnulib. */
+#undef REPLACE_NL_LANGINFO
+
+/* Define to 1 if open() should work around the inability to open a directory.
+   */
+#undef REPLACE_OPEN_DIRECTORY
+
+/* Define to 1 if strerror(0) does not return a message implying success. */
+#undef REPLACE_STRERROR_0
+
+/* Define if vasnprintf exists but is overridden by gnulib. */
+#undef REPLACE_VASNPRINTF
+
+/* Define to 1 if setlocale (LC_ALL, NULL) is multithread-safe. */
+#undef SETLOCALE_NULL_ALL_MTSAFE
+
+/* Define to 1 if setlocale (category, NULL) is multithread-safe. */
+#undef SETLOCALE_NULL_ONE_MTSAFE
+
+/* Define if sigaltstack() interprets the stack_t.ss_sp field incorrectly, as
+   the highest address of the alternate stack range rather than as the lowest
+   address. */
+#undef SIGALTSTACK_SS_REVERSED
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+   'sig_atomic_t'. */
+#undef SIG_ATOMIC_T_SUFFIX
+
+/* Define as the maximum value of type 'size_t', if the system doesn't define
+   it. */
+#ifndef SIZE_MAX
+# undef SIZE_MAX
+#endif
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+   'size_t'. */
+#undef SIZE_T_SUFFIX
+
+/* Define on Solaris 11 and its derivates. */
+#undef SOLARIS11
+
+/* Define as the direction of stack growth for your system. STACK_DIRECTION >
+   0 => grows toward higher addresses STACK_DIRECTION < 0 => grows toward
+   lower addresses STACK_DIRECTION = 0 => spaghetti stack. */
+#undef STACK_DIRECTION
+
+/* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */
+#undef STAT_MACROS_BROKEN
+
+/* Define to 1 if all of the C90 standard headers exist (not just the ones
+   required in a freestanding environment). This macro is provided for
+   backward compatibility; new code need not use it. */
+#undef STDC_HEADERS
+
+/* Define to 1 if strerror_r returns char *. */
+#undef STRERROR_R_CHAR_P
+
+/* Define to 1 if the type of the st_atim member of a struct stat is struct
+   timespec. */
+#undef TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC
+
+/* Define if the combination of the ISO C and POSIX multithreading APIs can be
+   used. */
+#undef USE_ISOC_AND_POSIX_THREADS
+
+/* Define if the ISO C multithreading library can be used. */
+#undef USE_ISOC_THREADS
+
+/* Define if the POSIX multithreading library can be used. */
+#undef USE_POSIX_THREADS
+
+/* Define if references to the POSIX multithreading library are satisfied by
+   libc. */
+#undef USE_POSIX_THREADS_FROM_LIBC
+
+/* Define if references to the POSIX multithreading library should be made
+   weak. */
+#undef USE_POSIX_THREADS_WEAK
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable general extensions on macOS.  */
+#ifndef _DARWIN_C_SOURCE
+# undef _DARWIN_C_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable X/Open compliant socket functions that do not require linking
+   with -lxnet on HP-UX 11.11.  */
+#ifndef _HPUX_ALT_XOPEN_SOCKET_API
+# undef _HPUX_ALT_XOPEN_SOCKET_API
+#endif
+/* Identify the host operating system as Minix.
+   This macro does not affect the system headers' behavior.
+   A future release of Autoconf may stop defining this macro.  */
+#ifndef _MINIX
+# undef _MINIX
+#endif
+/* Enable general extensions on NetBSD.
+   Enable NetBSD compatibility extensions on Minix.  */
+#ifndef _NETBSD_SOURCE
+# undef _NETBSD_SOURCE
+#endif
+/* Enable OpenBSD compatibility extensions on NetBSD.
+   Oddly enough, this does nothing on OpenBSD.  */
+#ifndef _OPENBSD_SOURCE
+# undef _OPENBSD_SOURCE
+#endif
+/* Define to 1 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_SOURCE
+# undef _POSIX_SOURCE
+#endif
+/* Define to 2 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_1_SOURCE
+# undef _POSIX_1_SOURCE
+#endif
+/* Enable POSIX-compatible threading on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-5:2014.  */
+#ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+# undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-1:2014.  */
+#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+# undef __STDC_WANT_IEC_60559_BFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-2:2015.  */
+#ifndef __STDC_WANT_IEC_60559_DFP_EXT__
+# undef __STDC_WANT_IEC_60559_DFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-4:2015.  */
+#ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__
+# undef __STDC_WANT_IEC_60559_FUNCS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-3:2015.  */
+#ifndef __STDC_WANT_IEC_60559_TYPES_EXT__
+# undef __STDC_WANT_IEC_60559_TYPES_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TR 24731-2:2010.  */
+#ifndef __STDC_WANT_LIB_EXT2__
+# undef __STDC_WANT_LIB_EXT2__
+#endif
+/* Enable extensions specified by ISO/IEC 24747:2009.  */
+#ifndef __STDC_WANT_MATH_SPEC_FUNCS__
+# undef __STDC_WANT_MATH_SPEC_FUNCS__
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable X/Open extensions.  Define to 500 only if necessary
+   to make mbstate_t available.  */
+#ifndef _XOPEN_SOURCE
+# undef _XOPEN_SOURCE
+#endif
+
+
+/* An alias of GNULIB_STDIO_SINGLE_THREAD. */
+#undef USE_UNLOCKED_IO
+
+/* Define if the native Windows multithreading API can be used. */
+#undef USE_WINDOWS_THREADS
+
+/* Version number of package */
+#undef VERSION
+
+/* Define to 1 if unsetenv returns void instead of int. */
+#undef VOID_UNSETENV
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+   'wchar_t'. */
+#undef WCHAR_T_SUFFIX
+
+/* Define if the wcrtomb function does not work in the C locale. */
+#undef WCRTOMB_C_LOCALE_BUG
+
+/* Define if the wcrtomb function has an incorrect return value. */
+#undef WCRTOMB_RETVAL_BUG
+
+/* Define if WSAStartup is needed. */
+#undef WINDOWS_SOCKETS
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+   'wint_t'. */
+#undef WINT_T_SUFFIX
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+#  define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+#  undef WORDS_BIGENDIAN
+# endif
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
+/* True if the compiler says it groks GNU C version MAJOR.MINOR.  */
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define _GL_GNUC_PREREQ(major, minor) \
+    ((major) < __GNUC__ + ((minor) <= __GNUC_MINOR__))
+#else
+# define _GL_GNUC_PREREQ(major, minor) 0
+#endif
+
+
+/* Define to enable the declarations of ISO C 11 types and functions. */
+#undef _ISOC11_SOURCE
+
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
+
+/* Define to 1 on Solaris. */
+#undef _LCONV_C99
+
+/* The _Noreturn keyword of C11.  */
+#ifndef _Noreturn
+# if (defined __cplusplus \
+      && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
+          || (defined _MSC_VER && 1900 <= _MSC_VER)) \
+      && 0)
+    /* [[noreturn]] is not practically usable, because with it the syntax
+         extern _Noreturn void func (...);
+       would not be valid; such a declaration would only be valid with 'extern'
+       and '_Noreturn' swapped, or without the 'extern' keyword.  However, some
+       AIX system header files and several gnulib header files use precisely
+       this syntax with 'extern'.  */
+#  define _Noreturn [[noreturn]]
+# elif ((!defined __cplusplus || defined __clang__) \
+        && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
+            || (!defined __STRICT_ANSI__ \
+                && (_GL_GNUC_PREREQ (4, 7) \
+                    || (defined __apple_build_version__ \
+                        ? 6000000 <= __apple_build_version__ \
+                        : 3 < __clang_major__ + (5 <= __clang_minor__))))))
+   /* _Noreturn works as-is.  */
+# elif _GL_GNUC_PREREQ (2, 8) || defined __clang__ || 0x5110 <= __SUNPRO_C
+#  define _Noreturn __attribute__ ((__noreturn__))
+# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
+#  define _Noreturn __declspec (noreturn)
+# else
+#  define _Noreturn
+# endif
+#endif
+
+
+/* Define to 1 in order to get the POSIX compatible declarations of socket
+   functions. */
+#undef _POSIX_PII_SOCKET
+
+/* Define if you want <regex.h> to include <limits.h>, so that it consistently
+   overrides <limits.h>'s RE_DUP_MAX. */
+#undef _REGEX_INCLUDE_LIMITS_H
+
+/* Define if you want regoff_t to be at least as wide POSIX requires. */
+#undef _REGEX_LARGE_OFFSETS
+
+/* Number of bits in a timestamp, on hosts where this is settable. */
+#undef _TIME_BITS
+
+/* For standard stat data types on VMS. */
+#undef _USE_STD_STAT
+
+/* Define to rpl_ if the getopt replacement functions and variables should be
+   used. */
+#undef __GETOPT_PREFIX
+
+/* For 64-bit time_t on 32-bit mingw. */
+#undef __MINGW_USE_VC2005_COMPAT
+
+/* Define to 1 if the system <stdint.h> predates C++11. */
+#undef __STDC_CONSTANT_MACROS
+
+/* Define to 1 if the system <stdint.h> predates C++11. */
+#undef __STDC_LIMIT_MACROS
+
+/* The _GL_ASYNC_SAFE marker should be attached to functions that are
+   signal handlers (for signals other than SIGABRT, SIGPIPE) or can be
+   invoked from such signal handlers.  Such functions have some restrictions:
+     * All functions that it calls should be marked _GL_ASYNC_SAFE as well,
+       or should be listed as async-signal-safe in POSIX
+       <https://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_04>
+       section 2.4.3.  Note that malloc(), sprintf(), and fwrite(), in
+       particular, are NOT async-signal-safe.
+     * All memory locations (variables and struct fields) that these functions
+       access must be marked 'volatile'.  This holds for both read and write
+       accesses.  Otherwise the compiler might optimize away stores to and
+       reads from such locations that occur in the program, depending on its
+       data flow analysis.  For example, when the program contains a loop
+       that is intended to inspect a variable set from within a signal handler
+           while (!signal_occurred)
+             ;
+       the compiler is allowed to transform this into an endless loop if the
+       variable 'signal_occurred' is not declared 'volatile'.
+   Additionally, recall that:
+     * A signal handler should not modify errno (except if it is a handler
+       for a fatal signal and ends by raising the same signal again, thus
+       provoking the termination of the process).  If it invokes a function
+       that may clobber errno, it needs to save and restore the value of
+       errno.  */
+#define _GL_ASYNC_SAFE
+
+
+/* Attributes.  */
+#if (defined __has_attribute \
+     && (!defined __clang_minor__ \
+         || 3 < __clang_major__ + (5 <= __clang_minor__)))
+# define _GL_HAS_ATTRIBUTE(attr) __has_attribute (__##attr##__)
+#else
+# define _GL_HAS_ATTRIBUTE(attr) _GL_ATTR_##attr
+# define _GL_ATTR_alloc_size _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_always_inline _GL_GNUC_PREREQ (3, 2)
+# define _GL_ATTR_artificial _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_cold _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_const _GL_GNUC_PREREQ (2, 95)
+# define _GL_ATTR_deprecated _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_diagnose_if 0
+# define _GL_ATTR_error _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_externally_visible _GL_GNUC_PREREQ (4, 1)
+# define _GL_ATTR_fallthrough _GL_GNUC_PREREQ (7, 0)
+# define _GL_ATTR_format _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_leaf _GL_GNUC_PREREQ (4, 6)
+# define _GL_ATTR_malloc _GL_GNUC_PREREQ (3, 0)
+# ifdef _ICC
+#  define _GL_ATTR_may_alias 0
+# else
+#  define _GL_ATTR_may_alias _GL_GNUC_PREREQ (3, 3)
+# endif
+# define _GL_ATTR_noinline _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_nonnull _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_nonstring _GL_GNUC_PREREQ (8, 0)
+# define _GL_ATTR_nothrow _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_packed _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_pure _GL_GNUC_PREREQ (2, 96)
+# define _GL_ATTR_returns_nonnull _GL_GNUC_PREREQ (4, 9)
+# define _GL_ATTR_sentinel _GL_GNUC_PREREQ (4, 0)
+# define _GL_ATTR_unused _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4)
+#endif
+
+#ifdef __has_c_attribute
+# define _GL_HAS_C_ATTRIBUTE(attr) __has_c_attribute (__##attr##__)
+#else
+# define _GL_HAS_C_ATTRIBUTE(attr) 0
+#endif
+
+
+#if _GL_HAS_ATTRIBUTE (alloc_size)
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args))
+#else
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (always_inline)
+# define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__))
+#else
+# define _GL_ATTRIBUTE_ALWAYS_INLINE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (artificial)
+# define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__))
+#else
+# define _GL_ATTRIBUTE_ARTIFICIAL
+#endif
+
+/* Avoid __attribute__ ((cold)) on MinGW; see thread starting at
+   <https://lists.gnu.org/r/emacs-devel/2019-04/msg01152.html>.
+   Also, Oracle Studio 12.6 requires 'cold' not '__cold__'.  */
+#if _GL_HAS_ATTRIBUTE (cold) && !defined __MINGW32__
+# ifndef __SUNPRO_C
+#  define _GL_ATTRIBUTE_COLD __attribute__ ((__cold__))
+# else
+#  define _GL_ATTRIBUTE_COLD __attribute__ ((cold))
+# endif
+#else
+# define _GL_ATTRIBUTE_COLD
+#endif
+
+#if _GL_HAS_ATTRIBUTE (const)
+# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
+#else
+# define _GL_ATTRIBUTE_CONST
+#endif
+
+/* _GL_ATTRIBUTE_DEALLOC (F, I) is for functions returning pointers
+   that can be freed by passing them as the Ith argument to the
+   function F.  _GL_ATTRIBUTE_DEALLOC_FREE is for functions that
+   return pointers that can be freed via 'free'; it can be used
+   only after including stdlib.h.  These macros cannot be used on
+   inline functions.  */
+#if _GL_GNUC_PREREQ (11, 0)
+# define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i)))
+#else
+# define _GL_ATTRIBUTE_DEALLOC(f, i)
+#endif
+#define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (free, 1)
+
+#if _GL_HAS_C_ATTRIBUTE (deprecated)
+# define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]]
+#elif _GL_HAS_ATTRIBUTE (deprecated)
+# define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
+#else
+# define _GL_ATTRIBUTE_DEPRECATED
+#endif
+
+#if _GL_HAS_ATTRIBUTE (error)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__error__ (msg)))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__warning__ (msg)))
+#elif _GL_HAS_ATTRIBUTE (diagnose_if)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__diagnose_if__ (1, msg, "error")))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__diagnose_if__ (1, msg, "warning")))
+#else
+# define _GL_ATTRIBUTE_ERROR(msg)
+# define _GL_ATTRIBUTE_WARNING(msg)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (externally_visible)
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((externally_visible))
+#else
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
+#endif
+
+/* FALLTHROUGH is special, because it always expands to something.  */
+#if _GL_HAS_C_ATTRIBUTE (fallthrough)
+# define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]]
+#elif _GL_HAS_ATTRIBUTE (fallthrough)
+# define _GL_ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__))
+#else
+# define _GL_ATTRIBUTE_FALLTHROUGH ((void) 0)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (format)
+# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+#else
+# define _GL_ATTRIBUTE_FORMAT(spec)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (leaf)
+# define _GL_ATTRIBUTE_LEAF __attribute__ ((__leaf__))
+#else
+# define _GL_ATTRIBUTE_LEAF
+#endif
+
+#if _GL_HAS_ATTRIBUTE (malloc)
+# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
+#else
+# define _GL_ATTRIBUTE_MALLOC
+#endif
+
+/* Oracle Studio 12.6 mishandles may_alias despite __has_attribute OK.  */
+#if _GL_HAS_ATTRIBUTE (may_alias) && !defined __SUNPRO_C
+# define _GL_ATTRIBUTE_MAY_ALIAS __attribute__ ((__may_alias__))
+#else
+# define _GL_ATTRIBUTE_MAY_ALIAS
+#endif
+
+#if _GL_HAS_C_ATTRIBUTE (maybe_unused)
+# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]]
+#else
+# define _GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_UNUSED
+#endif
+/* Earlier spellings of this macro.  */
+#define _UNUSED_PARAMETER_ _GL_ATTRIBUTE_MAYBE_UNUSED
+
+#if _GL_HAS_C_ATTRIBUTE (nodiscard)
+# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]]
+#elif _GL_HAS_ATTRIBUTE (warn_unused_result)
+# define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__))
+#else
+# define _GL_ATTRIBUTE_NODISCARD
+#endif
+
+#if _GL_HAS_ATTRIBUTE (noinline)
+# define _GL_ATTRIBUTE_NOINLINE __attribute__ ((__noinline__))
+#else
+# define _GL_ATTRIBUTE_NOINLINE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (nonnull)
+# define _GL_ATTRIBUTE_NONNULL(args) __attribute__ ((__nonnull__ args))
+#else
+# define _GL_ATTRIBUTE_NONNULL(args)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (nonstring)
+# define _GL_ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__))
+#else
+# define _GL_ATTRIBUTE_NONSTRING
+#endif
+
+/* There is no _GL_ATTRIBUTE_NORETURN; use _Noreturn instead.  */
+
+#if _GL_HAS_ATTRIBUTE (nothrow) && !defined __cplusplus
+# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__))
+#else
+# define _GL_ATTRIBUTE_NOTHROW
+#endif
+
+#if _GL_HAS_ATTRIBUTE (packed)
+# define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__))
+#else
+# define _GL_ATTRIBUTE_PACKED
+#endif
+
+#if _GL_HAS_ATTRIBUTE (pure)
+# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+#else
+# define _GL_ATTRIBUTE_PURE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (returns_nonnull)
+# define _GL_ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__))
+#else
+# define _GL_ATTRIBUTE_RETURNS_NONNULL
+#endif
+
+#if _GL_HAS_ATTRIBUTE (sentinel)
+# define _GL_ATTRIBUTE_SENTINEL(pos) __attribute__ ((__sentinel__ pos))
+#else
+# define _GL_ATTRIBUTE_SENTINEL(pos)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (unused)
+# define _GL_ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#else
+# define _GL_ATTRIBUTE_UNUSED
+#endif
+/* Earlier spellings of this macro.  */
+#define _GL_UNUSED _GL_ATTRIBUTE_UNUSED
+
+
+/* To support C++ as well as C, use _GL_UNUSED_LABEL with trailing ';'.  */
+#if !defined __cplusplus || _GL_GNUC_PREREQ (4, 5)
+# define _GL_UNUSED_LABEL _GL_ATTRIBUTE_UNUSED
+#else
+# define _GL_UNUSED_LABEL
+#endif
+
+
+/* Define to empty if `const' does not conform to ANSI C. */
+#undef const
+
+/* Please see the Gnulib manual for how to use these macros.
+
+   Suppress extern inline with HP-UX cc, as it appears to be broken; see
+   <https://lists.gnu.org/r/bug-texinfo/2013-02/msg00030.html>.
+
+   Suppress extern inline with Sun C in standards-conformance mode, as it
+   mishandles inline functions that call each other.  E.g., for 'inline void f
+   (void) { } inline void g (void) { f (); }', c99 incorrectly complains
+   'reference to static identifier "f" in extern inline function'.
+   This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16.
+
+   Suppress extern inline (with or without __attribute__ ((__gnu_inline__)))
+   on configurations that mistakenly use 'static inline' to implement
+   functions or macros in standard C headers like <ctype.h>.  For example,
+   if isdigit is mistakenly implemented via a static inline function,
+   a program containing an extern inline function that calls isdigit
+   may not work since the C standard prohibits extern inline functions
+   from calling static functions (ISO C 99 section 6.7.4.(3).
+   This bug is known to occur on:
+
+     OS X 10.8 and earlier; see:
+     https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html
+
+     DragonFly; see
+     http://muscles.dragonflybsd.org/bulk/clang-master-potential/20141111_102002/logs/ah-tty-0.3.12.log
+
+     FreeBSD; see:
+     https://lists.gnu.org/r/bug-gnulib/2014-07/msg00104.html
+
+   OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and
+   for clang but remains for g++; see <https://trac.macports.org/ticket/41033>.
+   Assume DragonFly and FreeBSD will be similar.
+
+   GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+   inline semantics, unless -fgnu89-inline is used.  It defines a macro
+   __GNUC_STDC_INLINE__ to indicate this situation or a macro
+   __GNUC_GNU_INLINE__ to indicate the opposite situation.
+   GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline
+   semantics but warns, unless -fgnu89-inline is used:
+     warning: C99 inline functions are not supported; using GNU89
+     warning: to disable this warning use -fgnu89-inline or the gnu_inline function attribute
+   It defines a macro __GNUC_GNU_INLINE__ to indicate this situation.
+ */
+#if (((defined __APPLE__ && defined __MACH__) \
+      || defined __DragonFly__ || defined __FreeBSD__) \
+     && (defined __header_inline \
+         ? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \
+            && ! defined __clang__) \
+         : ((! defined _DONT_USE_CTYPE_INLINE_ \
+             && (defined __GNUC__ || defined __cplusplus)) \
+            || (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \
+                && defined __GNUC__ && ! defined __cplusplus))))
+# define _GL_EXTERN_INLINE_STDHEADER_BUG
+#endif
+#if ((__GNUC__ \
+      ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \
+      : (199901L <= __STDC_VERSION__ \
+         && !defined __HP_cc \
+         && !defined __PGI \
+         && !(defined __SUNPRO_C && __STDC__))) \
+     && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+# define _GL_INLINE inline
+# define _GL_EXTERN_INLINE extern inline
+# define _GL_EXTERN_INLINE_IN_USE
+#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \
+       && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+# if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__
+   /* __gnu_inline__ suppresses a GCC 4.2 diagnostic.  */
+#  define _GL_INLINE extern inline __attribute__ ((__gnu_inline__))
+# else
+#  define _GL_INLINE extern inline
+# endif
+# define _GL_EXTERN_INLINE extern
+# define _GL_EXTERN_INLINE_IN_USE
+#else
+# define _GL_INLINE static _GL_UNUSED
+# define _GL_EXTERN_INLINE static _GL_UNUSED
+#endif
+
+/* In GCC 4.6 (inclusive) to 5.1 (exclusive),
+   suppress bogus "no previous prototype for 'FOO'"
+   and "no previous declaration for 'FOO'" diagnostics,
+   when FOO is an inline function in the header; see
+   <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113> and
+   <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63877>.  */
+#if __GNUC__ == 4 && 6 <= __GNUC_MINOR__
+# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__
+#  define _GL_INLINE_HEADER_CONST_PRAGMA
+# else
+#  define _GL_INLINE_HEADER_CONST_PRAGMA \
+     _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"")
+# endif
+# define _GL_INLINE_HEADER_BEGIN \
+    _Pragma ("GCC diagnostic push") \
+    _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \
+    _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \
+    _GL_INLINE_HEADER_CONST_PRAGMA
+# define _GL_INLINE_HEADER_END \
+    _Pragma ("GCC diagnostic pop")
+#else
+# define _GL_INLINE_HEADER_BEGIN
+# define _GL_INLINE_HEADER_END
+#endif
+
+/* Define to the overridden function name */
+#undef fts_children
+
+/* Define to the overridden function name */
+#undef fts_close
+
+/* Define to the overridden function name */
+#undef fts_cross_check
+
+/* Define to the overridden function name */
+#undef fts_open
+
+/* Define to the overridden function name */
+#undef fts_read
+
+/* Define to the overridden function name */
+#undef fts_set
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+#undef gid_t
+
+/* A replacement for va_copy, if needed.  */
+#define gl_va_copy(a,b) ((a) = (b))
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+#undef inline
+#endif
+
+/* Define to long or long long if <stdint.h> and <inttypes.h> don't define. */
+#undef intmax_t
+
+/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports
+   the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of
+   earlier versions), but does not display it by setting __GNUC_STDC_INLINE__.
+   __APPLE__ && __MACH__ test for Mac OS X.
+   __APPLE_CC__ tests for the Apple compiler and its version.
+   __STDC_VERSION__ tests for the C99 mode.  */
+#if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__
+# define __GNUC_STDC_INLINE__ 1
+#endif
+
+/* Define to 1 if the compiler is checking for lint. */
+#undef lint
+
+/* Define to a type if <wchar.h> does not define. */
+#undef mbstate_t
+
+/* _GL_CMP (n1, n2) performs a three-valued comparison on n1 vs. n2, where
+   n1 and n2 are expressions without side effects, that evaluate to real
+   numbers (excluding NaN).
+   It returns
+     1  if n1 > n2
+     0  if n1 == n2
+     -1 if n1 < n2
+   The naïve code   (n1 > n2 ? 1 : n1 < n2 ? -1 : 0)  produces a conditional
+   jump with nearly all GCC versions up to GCC 10.
+   This variant     (n1 < n2 ? -1 : n1 > n2)  produces a conditional with many
+   GCC versions up to GCC 9.
+   The better code  (n1 > n2) - (n1 < n2)  from Hacker's Delight § 2-9
+   avoids conditional jumps in all GCC versions >= 3.4.  */
+#define _GL_CMP(n1, n2) (((n1) > (n2)) - ((n1) < (n2)))
+
+
+/* Define to `int' if <sys/types.h> does not define. */
+#undef mode_t
+
+/* Define to the type of st_nlink in struct stat, or a supertype. */
+#undef nlink_t
+
+/* Define to `long int' if <sys/types.h> does not define. */
+#undef off_t
+
+/* Define as a signed integer type capable of holding a process identifier. */
+#undef pid_t
+
+/* Define as the type of the result of subtracting two pointers, if the system
+   doesn't define it. */
+#undef ptrdiff_t
+
+/* Define to rpl_re_comp if the replacement should be used. */
+#undef re_comp
+
+/* Define to rpl_re_compile_fastmap if the replacement should be used. */
+#undef re_compile_fastmap
+
+/* Define to rpl_re_compile_pattern if the replacement should be used. */
+#undef re_compile_pattern
+
+/* Define to rpl_re_exec if the replacement should be used. */
+#undef re_exec
+
+/* Define to rpl_re_match if the replacement should be used. */
+#undef re_match
+
+/* Define to rpl_re_match_2 if the replacement should be used. */
+#undef re_match_2
+
+/* Define to rpl_re_search if the replacement should be used. */
+#undef re_search
+
+/* Define to rpl_re_search_2 if the replacement should be used. */
+#undef re_search_2
+
+/* Define to rpl_re_set_registers if the replacement should be used. */
+#undef re_set_registers
+
+/* Define to rpl_re_set_syntax if the replacement should be used. */
+#undef re_set_syntax
+
+/* Define to rpl_re_syntax_options if the replacement should be used. */
+#undef re_syntax_options
+
+/* Define to rpl_regcomp if the replacement should be used. */
+#undef regcomp
+
+/* Define to rpl_regerror if the replacement should be used. */
+#undef regerror
+
+/* Define to rpl_regexec if the replacement should be used. */
+#undef regexec
+
+/* Define to rpl_regfree if the replacement should be used. */
+#undef regfree
+
+/* Define to the equivalent of the C99 'restrict' keyword, or to
+   nothing if this is not supported.  Do not define if restrict is
+   supported only directly.  */
+#undef restrict
+/* Work around a bug in older versions of Sun C++, which did not
+   #define __restrict__ or support _Restrict or __restrict__
+   even though the corresponding Sun C compiler ended up with
+   "#define restrict _Restrict" or "#define restrict __restrict__"
+   in the previous line.  This workaround can be removed once
+   we assume Oracle Developer Studio 12.5 (2016) or later.  */
+#if defined __SUNPRO_CC && !defined __RESTRICT && !defined __restrict__
+# define _Restrict
+# define __restrict__
+#endif
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+#undef size_t
+
+/* type to use in place of socklen_t if not defined */
+#undef socklen_t
+
+/* Define as a signed type of the same size as size_t. */
+#undef ssize_t
+
+/* Define to 'struct sigaltstack' if that's the type of the argument to
+   sigaltstack */
+#undef stack_t
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+#undef uid_t
+
+
+  /* This definition is a duplicate of the one in unitypes.h.
+     It is here so that we can cope with an older version of unitypes.h
+     that does not contain this definition and that is pre-installed among
+     the public header files.  */
+  # if defined __restrict \
+       || 2 < __GNUC__ + (95 <= __GNUC_MINOR__) \
+       || __clang_major__ >= 3
+  #  define _UC_RESTRICT __restrict
+  # elif 199901L <= __STDC_VERSION__ || defined restrict
+  #  define _UC_RESTRICT restrict
+  # else
+  #  define _UC_RESTRICT
+  # endif
+  
+
+/* Define as a macro for copying va_list variables. */
+#undef va_copy
diff --git a/src/grep/config.win.h b/src/grep/config.win.h
new file mode 100644
index 0000000..64e241b
--- /dev/null
+++ b/src/grep/config.win.h
@@ -0,0 +1,2594 @@
+/* config.hin.  Manually edited */
+#ifndef INCLUDED_CONFIG_WIN_H
+#define INCLUDED_CONFIG_WIN_H
+
+#if 1
+
+/* HACK ALERT! Make inlined CRT functions static to avoid getting duplicate
+   symbols errors for things like _vprintf_l.  */
+# define _CRT_STDIO_INLINE static __inline
+
+/* HACK ALERT! Ugly ugly hack for making __local_stdio_printf_options static
+   and not to cause stupid stupid duplicate symbols linker errors. */
+# include <corecrt.h>
+# undef _CRT_INLINE_PURE_SECURITYCRITICAL_ATTRIBUTE
+# define _CRT_INLINE_PURE_SECURITYCRITICAL_ATTRIBUTE static
+
+/* HACK ALERT! wchar.h requires __inline temporarily redefined to static _inline or
+   we'll end up with mbsinit wmemchr, wmemcmp, wmemcpy and friends as duplicates.  */
+# include <stdio.h>
+# include <conio.h>
+# include <string.h>
+# include <time.h>
+# include <sys/stat.h>
+# define __inline static _inline
+# include <wchar.h>
+# undef __inline
+
+#endif
+
+/* CPU and C ABI indicator */
+#ifndef __i386__
+#undef __i386__
+#endif
+#ifndef __x86_64_x32__
+#undef __x86_64_x32__
+#endif
+#ifndef __x86_64__
+#undef __x86_64__
+#endif
+#ifndef __alpha__
+#undef __alpha__
+#endif
+#ifndef __arm__
+#undef __arm__
+#endif
+#ifndef __armhf__
+#undef __armhf__
+#endif
+#ifndef __arm64_ilp32__
+#undef __arm64_ilp32__
+#endif
+#ifndef __arm64__
+#undef __arm64__
+#endif
+#ifndef __hppa__
+#undef __hppa__
+#endif
+#ifndef __hppa64__
+#undef __hppa64__
+#endif
+#ifndef __ia64_ilp32__
+#undef __ia64_ilp32__
+#endif
+#ifndef __ia64__
+#undef __ia64__
+#endif
+#ifndef __m68k__
+#undef __m68k__
+#endif
+#ifndef __mips__
+#undef __mips__
+#endif
+#ifndef __mipsn32__
+#undef __mipsn32__
+#endif
+#ifndef __mips64__
+#undef __mips64__
+#endif
+#ifndef __powerpc__
+#undef __powerpc__
+#endif
+#ifndef __powerpc64__
+#undef __powerpc64__
+#endif
+#ifndef __powerpc64_elfv2__
+#undef __powerpc64_elfv2__
+#endif
+#ifndef __riscv32__
+#undef __riscv32__
+#endif
+#ifndef __riscv64__
+#undef __riscv64__
+#endif
+#ifndef __riscv32_ilp32__
+#undef __riscv32_ilp32__
+#endif
+#ifndef __riscv32_ilp32f__
+#undef __riscv32_ilp32f__
+#endif
+#ifndef __riscv32_ilp32d__
+#undef __riscv32_ilp32d__
+#endif
+#ifndef __riscv64_ilp32__
+#undef __riscv64_ilp32__
+#endif
+#ifndef __riscv64_ilp32f__
+#undef __riscv64_ilp32f__
+#endif
+#ifndef __riscv64_ilp32d__
+#undef __riscv64_ilp32d__
+#endif
+#ifndef __riscv64_lp64__
+#undef __riscv64_lp64__
+#endif
+#ifndef __riscv64_lp64f__
+#undef __riscv64_lp64f__
+#endif
+#ifndef __riscv64_lp64d__
+#undef __riscv64_lp64d__
+#endif
+#ifndef __s390__
+#undef __s390__
+#endif
+#ifndef __s390x__
+#undef __s390x__
+#endif
+#ifndef __sh__
+#undef __sh__
+#endif
+#ifndef __sparc__
+#undef __sparc__
+#endif
+#ifndef __sparc64__
+#undef __sparc64__
+#endif
+
+
+/* Define if building universal (internal helper macro) */
+#undef AC_APPLE_UNIVERSAL_BUILD
+
+/* Define to the function xargmatch calls on failures. */
+#undef ARGMATCH_DIE
+
+/* Define to the declaration of the xargmatch failure function. */
+#undef ARGMATCH_DIE_DECL
+
+/* Define to the number of bits in type 'ptrdiff_t'. */
+#undef BITSIZEOF_PTRDIFF_T
+
+/* Define to the number of bits in type 'sig_atomic_t'. */
+#undef BITSIZEOF_SIG_ATOMIC_T
+
+/* Define to the number of bits in type 'size_t'. */
+#undef BITSIZEOF_SIZE_T
+
+/* Define to the number of bits in type 'wchar_t'. */
+#undef BITSIZEOF_WCHAR_T
+
+/* Define to the number of bits in type 'wint_t'. */
+#undef BITSIZEOF_WINT_T
+
+/* Define to 1 if the `closedir' function returns void instead of int. */
+#undef CLOSEDIR_VOID
+
+/* Define to 1 if using 'alloca.c'. */
+#undef C_ALLOCA
+
+/* Define as the bit index in the word where to find bit 0 of the exponent of
+   'double'. */
+#undef DBL_EXPBIT0_BIT
+
+/* Define as the word index where to find the exponent of 'double'. */
+#undef DBL_EXPBIT0_WORD
+
+/* the name of the file descriptor member of DIR */
+#undef DIR_FD_MEMBER_NAME
+
+#ifdef DIR_FD_MEMBER_NAME
+# define DIR_TO_FD(Dir_p) ((Dir_p)->DIR_FD_MEMBER_NAME)
+#else
+# define DIR_TO_FD(Dir_p) -1
+#endif
+
+
+/* Define to 1 if // is a file system root distinct from /. */
+#undef DOUBLE_SLASH_IS_DISTINCT_ROOT
+
+/* Define if struct dirent has a member d_ino that actually works. */
+#undef D_INO_IN_DIRENT
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+#undef ENABLE_NLS
+
+/* Define this to 1 if F_DUPFD behavior does not match POSIX */
+#undef FCNTL_DUPFD_BUGGY
+
+/* Define to nothing if C supports flexible array members, and to 1 if it does
+   not. That way, with a declaration like 'struct s { int n; short
+   d[FLEXIBLE_ARRAY_MEMBER]; };', the struct hack can be used with pre-C99
+   compilers. Use 'FLEXSIZEOF (struct s, d, N * sizeof (short))' to calculate
+   the size in bytes of such a struct containing an N-element array. */
+#define FLEXIBLE_ARRAY_MEMBER 1
+
+/* Define to 1 if fopen() fails to recognize a trailing slash. */
+#undef FOPEN_TRAILING_SLASH_BUG
+
+/* Define to 1 if nl_langinfo (YESEXPR) returns a non-empty string. */
+#undef FUNC_NL_LANGINFO_YESEXPR_WORKS
+
+/* Define this to 'void' or 'struct timezone' to match the system's
+   declaration of the second argument to gettimeofday. */
+#undef GETTIMEOFDAY_TIMEZONE
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module close-stream shall be considered present. */
+#undef GNULIB_CLOSE_STREAM
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module fcntl-safer shall be considered present. */
+#undef GNULIB_FCNTL_SAFER
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module fdopendir shall be considered present. */
+#undef GNULIB_FDOPENDIR
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module fd-safer-flag shall be considered present. */
+#undef GNULIB_FD_SAFER_FLAG
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module fopen-gnu shall be considered present. */
+#undef GNULIB_FOPEN_GNU
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module fscanf shall be considered present. */
+#undef GNULIB_FSCANF
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module isblank shall be considered present. */
+#undef GNULIB_ISBLANK
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module lock shall be considered present. */
+#undef GNULIB_LOCK
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module msvc-nothrow shall be considered present. */
+#undef GNULIB_MSVC_NOTHROW
+
+/* Define to 1 to disable use of VLAs */
+#undef GNULIB_NO_VLA
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module openat shall be considered present. */
+#define GNULIB_OPENAT 1
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module openat-safer shall be considered present. */
+#define GNULIB_OPENAT_SAFER 1
+
+/* enable some gnulib portability checks */
+#undef GNULIB_PORTCHECK
+
+/* Enable compile-time and run-time bounds-checking, and some warnings,
+      without upsetting glibc 2.15+. */
+   #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
+        && defined __OPTIMIZE__ && __OPTIMIZE__)
+   # define _FORTIFY_SOURCE 2
+   #endif
+  
+
+/* Define to 1 if printf and friends should be labeled with attribute
+   "__gnu_printf__" instead of "__printf__" */
+#undef GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module reallocarray shall be considered present. */
+#undef GNULIB_REALLOCARRAY
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module scanf shall be considered present. */
+#undef GNULIB_SCANF
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module snprintf shall be considered present. */
+#undef GNULIB_SNPRINTF
+
+/* Define to 1 if you want the FILE stream functions getc, putc, etc. to use
+   unlocked I/O if available, throughout the package. Unlocked I/O can improve
+   performance, sometimes dramatically. But unlocked I/O is safe only in
+   single-threaded programs, as well as in multithreaded programs for which
+   you can guarantee that every FILE stream, including stdin, stdout, stderr,
+   is used only in a single thread. */
+#undef GNULIB_STDIO_SINGLE_THREAD
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module strerror shall be considered present. */
+#undef GNULIB_STRERROR
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module strerror_r-posix shall be considered present. */
+#define GNULIB_STRERROR_R_POSIX 0
+
+/* Define to 1 when the gnulib module accept should be tested. */
+#undef GNULIB_TEST_ACCEPT
+
+/* Define to 1 when the gnulib module bind should be tested. */
+#undef GNULIB_TEST_BIND
+
+/* Define to 1 when the gnulib module btowc should be tested. */
+#undef GNULIB_TEST_BTOWC
+
+/* Define to 1 when the gnulib module calloc-posix should be tested. */
+#undef GNULIB_TEST_CALLOC_POSIX
+
+/* Define to 1 when the gnulib module chdir should be tested. */
+#undef GNULIB_TEST_CHDIR
+
+/* Define to 1 when the gnulib module cloexec should be tested. */
+#undef GNULIB_TEST_CLOEXEC
+
+/* Define to 1 when the gnulib module close should be tested. */
+#undef GNULIB_TEST_CLOSE
+
+/* Define to 1 when the gnulib module closedir should be tested. */
+#undef GNULIB_TEST_CLOSEDIR
+
+/* Define to 1 when the gnulib module connect should be tested. */
+#undef GNULIB_TEST_CONNECT
+
+/* Define to 1 when the gnulib module dirfd should be tested. */
+#undef GNULIB_TEST_DIRFD
+
+/* Define to 1 when the gnulib module dup should be tested. */
+#undef GNULIB_TEST_DUP
+
+/* Define to 1 when the gnulib module dup2 should be tested. */
+#undef GNULIB_TEST_DUP2
+
+/* Define to 1 when the gnulib module environ should be tested. */
+#undef GNULIB_TEST_ENVIRON
+
+/* Define to 1 when the gnulib module fchdir should be tested. */
+#undef GNULIB_TEST_FCHDIR
+
+/* Define to 1 when the gnulib module fcntl should be tested. */
+#undef GNULIB_TEST_FCNTL
+
+/* Define to 1 when the gnulib module fdopen should be tested. */
+#undef GNULIB_TEST_FDOPEN
+
+/* Define to 1 when the gnulib module fdopendir should be tested. */
+#undef GNULIB_TEST_FDOPENDIR
+
+/* Define to 1 when the gnulib module fgetc should be tested. */
+#undef GNULIB_TEST_FGETC
+
+/* Define to 1 when the gnulib module fgets should be tested. */
+#undef GNULIB_TEST_FGETS
+
+/* Define to 1 when the gnulib module fnmatch should be tested. */
+#undef GNULIB_TEST_FNMATCH
+
+/* Define to 1 when the gnulib module fopen should be tested. */
+#undef GNULIB_TEST_FOPEN
+
+/* Define to 1 when the gnulib module fprintf should be tested. */
+#undef GNULIB_TEST_FPRINTF
+
+/* Define to 1 when the gnulib module fputc should be tested. */
+#undef GNULIB_TEST_FPUTC
+
+/* Define to 1 when the gnulib module fputs should be tested. */
+#undef GNULIB_TEST_FPUTS
+
+/* Define to 1 when the gnulib module fread should be tested. */
+#undef GNULIB_TEST_FREAD
+
+/* Define to 1 when the gnulib module free-posix should be tested. */
+#undef GNULIB_TEST_FREE_POSIX
+
+/* Define to 1 when the gnulib module fscanf should be tested. */
+#undef GNULIB_TEST_FSCANF
+
+/* Define to 1 when the gnulib module fstat should be tested. */
+#undef GNULIB_TEST_FSTAT
+
+/* Define to 1 when the gnulib module fstatat should be tested. */
+#undef GNULIB_TEST_FSTATAT
+
+/* Define to 1 when the gnulib module ftruncate should be tested. */
+#undef GNULIB_TEST_FTRUNCATE
+
+/* Define to 1 when the gnulib module fwrite should be tested. */
+#undef GNULIB_TEST_FWRITE
+
+/* Define to 1 when the gnulib module getc should be tested. */
+#undef GNULIB_TEST_GETC
+
+/* Define to 1 when the gnulib module getchar should be tested. */
+#undef GNULIB_TEST_GETCHAR
+
+/* Define to 1 when the gnulib module getcwd should be tested. */
+#undef GNULIB_TEST_GETCWD
+
+/* Define to 1 when the gnulib module getdtablesize should be tested. */
+#undef GNULIB_TEST_GETDTABLESIZE
+
+/* Define to 1 when the gnulib module getopt-posix should be tested. */
+#undef GNULIB_TEST_GETOPT_POSIX
+
+/* Define to 1 when the gnulib module getpagesize should be tested. */
+#undef GNULIB_TEST_GETPAGESIZE
+
+/* Define to 1 when the gnulib module gettimeofday should be tested. */
+#undef GNULIB_TEST_GETTIMEOFDAY
+
+/* Define to 1 when the gnulib module ioctl should be tested. */
+#undef GNULIB_TEST_IOCTL
+
+/* Define to 1 when the gnulib module isatty should be tested. */
+#undef GNULIB_TEST_ISATTY
+
+/* Define to 1 when the gnulib module iswblank should be tested. */
+#undef GNULIB_TEST_ISWBLANK
+
+/* Define to 1 when the gnulib module iswctype should be tested. */
+#undef GNULIB_TEST_ISWCTYPE
+
+/* Define to 1 when the gnulib module iswdigit should be tested. */
+#undef GNULIB_TEST_ISWDIGIT
+
+/* Define to 1 when the gnulib module iswxdigit should be tested. */
+#undef GNULIB_TEST_ISWXDIGIT
+
+/* Define to 1 when the gnulib module listen should be tested. */
+#undef GNULIB_TEST_LISTEN
+
+/* Define to 1 when the gnulib module localeconv should be tested. */
+#undef GNULIB_TEST_LOCALECONV
+
+/* Define to 1 when the gnulib module localename should be tested. */
+#undef GNULIB_TEST_LOCALENAME
+
+/* Define to 1 when the gnulib module lseek should be tested. */
+#undef GNULIB_TEST_LSEEK
+
+/* Define to 1 when the gnulib module lstat should be tested. */
+#undef GNULIB_TEST_LSTAT
+
+/* Define to 1 when the gnulib module malloc-posix should be tested. */
+#undef GNULIB_TEST_MALLOC_POSIX
+
+/* Define to 1 when the gnulib module mbrlen should be tested. */
+#undef GNULIB_TEST_MBRLEN
+
+/* Define to 1 when the gnulib module mbrtowc should be tested. */
+#undef GNULIB_TEST_MBRTOWC
+
+/* Define to 1 when the gnulib module mbscasecmp should be tested. */
+#undef GNULIB_TEST_MBSCASECMP
+
+/* Define to 1 when the gnulib module mbsinit should be tested. */
+#undef GNULIB_TEST_MBSINIT
+
+/* Define to 1 when the gnulib module mbslen should be tested. */
+#undef GNULIB_TEST_MBSLEN
+
+/* Define to 1 when the gnulib module mbsrtowcs should be tested. */
+#undef GNULIB_TEST_MBSRTOWCS
+
+/* Define to 1 when the gnulib module mbsstr should be tested. */
+#undef GNULIB_TEST_MBSSTR
+
+/* Define to 1 when the gnulib module mbtowc should be tested. */
+#undef GNULIB_TEST_MBTOWC
+
+/* Define to 1 when the gnulib module memchr should be tested. */
+#undef GNULIB_TEST_MEMCHR
+
+/* Define to 1 when the gnulib module mempcpy should be tested. */
+#undef GNULIB_TEST_MEMPCPY
+
+/* Define to 1 when the gnulib module memrchr should be tested. */
+#undef GNULIB_TEST_MEMRCHR
+
+/* Define to 1 when the gnulib module nanosleep should be tested. */
+#undef GNULIB_TEST_NANOSLEEP
+
+/* Define to 1 when the gnulib module nl_langinfo should be tested. */
+#undef GNULIB_TEST_NL_LANGINFO
+
+/* Define to 1 when the gnulib module open should be tested. */
+#undef GNULIB_TEST_OPEN
+
+/* Define to 1 when the gnulib module openat should be tested. */
+#undef GNULIB_TEST_OPENAT
+
+/* Define to 1 when the gnulib module opendir should be tested. */
+#undef GNULIB_TEST_OPENDIR
+
+/* Define to 1 when the gnulib module perror should be tested. */
+#undef GNULIB_TEST_PERROR
+
+/* Define to 1 when the gnulib module pipe should be tested. */
+#undef GNULIB_TEST_PIPE
+
+/* Define to 1 when the gnulib module printf should be tested. */
+#undef GNULIB_TEST_PRINTF
+
+/* Define to 1 when the gnulib module pthread_sigmask should be tested. */
+#undef GNULIB_TEST_PTHREAD_SIGMASK
+
+/* Define to 1 when the gnulib module pthread-thread should be tested. */
+#undef GNULIB_TEST_PTHREAD_THREAD
+
+/* Define to 1 when the gnulib module putc should be tested. */
+#undef GNULIB_TEST_PUTC
+
+/* Define to 1 when the gnulib module putchar should be tested. */
+#undef GNULIB_TEST_PUTCHAR
+
+/* Define to 1 when the gnulib module putenv should be tested. */
+#undef GNULIB_TEST_PUTENV
+
+/* Define to 1 when the gnulib module puts should be tested. */
+#undef GNULIB_TEST_PUTS
+
+/* Define to 1 when the gnulib module raise should be tested. */
+#undef GNULIB_TEST_RAISE
+
+/* Define to 1 when the gnulib module rawmemchr should be tested. */
+#undef GNULIB_TEST_RAWMEMCHR
+
+/* Define to 1 when the gnulib module read should be tested. */
+#undef GNULIB_TEST_READ
+
+/* Define to 1 when the gnulib module readdir should be tested. */
+#undef GNULIB_TEST_READDIR
+
+/* Define to 1 when the gnulib module reallocarray should be tested. */
+#undef GNULIB_TEST_REALLOCARRAY
+
+/* Define to 1 when the gnulib module realloc-posix should be tested. */
+#undef GNULIB_TEST_REALLOC_POSIX
+
+/* Define to 1 when the gnulib module scanf should be tested. */
+#undef GNULIB_TEST_SCANF
+
+/* Define to 1 when the gnulib module select should be tested. */
+#undef GNULIB_TEST_SELECT
+
+/* Define to 1 when the gnulib module setenv should be tested. */
+#undef GNULIB_TEST_SETENV
+
+/* Define to 1 when the gnulib module setlocale should be tested. */
+#undef GNULIB_TEST_SETLOCALE
+
+/* Define to 1 when the gnulib module setlocale_null should be tested. */
+#undef GNULIB_TEST_SETLOCALE_NULL
+
+/* Define to 1 when the gnulib module setsockopt should be tested. */
+#undef GNULIB_TEST_SETSOCKOPT
+
+/* Define to 1 when the gnulib module sigaction should be tested. */
+#undef GNULIB_TEST_SIGACTION
+
+/* Define to 1 when the gnulib module sigprocmask should be tested. */
+#undef GNULIB_TEST_SIGPROCMASK
+
+/* Define to 1 when the gnulib module sleep should be tested. */
+#undef GNULIB_TEST_SLEEP
+
+/* Define to 1 when the gnulib module snprintf should be tested. */
+#undef GNULIB_TEST_SNPRINTF
+
+/* Define to 1 when the gnulib module socket should be tested. */
+#undef GNULIB_TEST_SOCKET
+
+/* Define to 1 when the gnulib module stat should be tested. */
+#undef GNULIB_TEST_STAT
+
+/* Define to 1 when the gnulib module stpcpy should be tested. */
+#undef GNULIB_TEST_STPCPY
+
+/* Define to 1 when the gnulib module strdup should be tested. */
+#undef GNULIB_TEST_STRDUP
+
+/* Define to 1 when the gnulib module strerror should be tested. */
+#undef GNULIB_TEST_STRERROR
+
+/* Define to 1 when the gnulib module strerror_r should be tested. */
+#undef GNULIB_TEST_STRERROR_R
+
+/* Define to 1 when the gnulib module strnlen should be tested. */
+#undef GNULIB_TEST_STRNLEN
+
+/* Define to 1 when the gnulib module strstr should be tested. */
+#undef GNULIB_TEST_STRSTR
+
+/* Define to 1 when the gnulib module strtoll should be tested. */
+#undef GNULIB_TEST_STRTOLL
+
+/* Define to 1 when the gnulib module strtoull should be tested. */
+#undef GNULIB_TEST_STRTOULL
+
+/* Define to 1 when the gnulib module symlink should be tested. */
+#undef GNULIB_TEST_SYMLINK
+
+/* Define to 1 when the gnulib module unsetenv should be tested. */
+#undef GNULIB_TEST_UNSETENV
+
+/* Define to 1 when the gnulib module vfprintf should be tested. */
+#undef GNULIB_TEST_VFPRINTF
+
+/* Define to 1 when the gnulib module vprintf should be tested. */
+#undef GNULIB_TEST_VPRINTF
+
+/* Define to 1 when the gnulib module wcrtomb should be tested. */
+#undef GNULIB_TEST_WCRTOMB
+
+/* Define to 1 when the gnulib module wctob should be tested. */
+#undef GNULIB_TEST_WCTOB
+
+/* Define to 1 when the gnulib module wctomb should be tested. */
+#undef GNULIB_TEST_WCTOMB
+
+/* Define to 1 when the gnulib module wcwidth should be tested. */
+#undef GNULIB_TEST_WCWIDTH
+
+/* Define to 1 when the gnulib module wmemchr should be tested. */
+#undef GNULIB_TEST_WMEMCHR
+
+/* Define to 1 when the gnulib module wmempcpy should be tested. */
+#undef GNULIB_TEST_WMEMPCPY
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module unistr/u8-mbtoucr shall be considered present. */
+#undef GNULIB_UNISTR_U8_MBTOUCR
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module unistr/u8-uctomb shall be considered present. */
+#undef GNULIB_UNISTR_U8_UCTOMB
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module xalloc shall be considered present. */
+#define GNULIB_XALLOC 1
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+   whether the gnulib module xalloc-die shall be considered present. */
+#define GNULIB_XALLOC_DIE 1
+
+/* We are building grep */
+#define GREP
+
+/* Define to 1 if you have 'alloca' after including <alloca.h>, a header that
+   may be supplied by this distribution. */
+#undef HAVE_ALLOCA
+
+/* Define to 1 if <alloca.h> works. */
+#undef HAVE_ALLOCA_H
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#undef HAVE_ARPA_INET_H
+
+/* Define to 1 if you have the <bp-sym.h> header file. */
+#undef HAVE_BP_SYM_H
+
+/* Define to 1 if you have the `btowc' function. */
+#undef HAVE_BTOWC
+
+/* Define to 1 if nanosleep mishandles large arguments. */
+#undef HAVE_BUG_BIG_NANOSLEEP
+
+/* Define to 1 if you have the `catgets' function. */
+#undef HAVE_CATGETS
+
+/* Define to 1 if you have the Mac OS X function
+   CFLocaleCopyPreferredLanguages in the CoreFoundation framework. */
+#undef HAVE_CFLOCALECOPYPREFERREDLANGUAGES
+
+/* Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in
+   the CoreFoundation framework. */
+#undef HAVE_CFPREFERENCESCOPYAPPVALUE
+
+/* Define to 1 if you have the `closedir' function. */
+#define HAVE_CLOSEDIR 1
+
+/* Define to 1 if you have the <crtdefs.h> header file. */
+#undef HAVE_CRTDEFS_H
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+#undef HAVE_DCGETTEXT
+
+/* Define to 1 if you have the declaration of `alarm', and to 0 if you don't.
+   */
+#undef HAVE_DECL_ALARM
+
+/* Define to 1 if you have the declaration of `clearerr_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_CLEARERR_UNLOCKED
+
+/* Define to 1 if you have the declaration of `dirfd', and to 0 if you don't.
+   */
+#undef HAVE_DECL_DIRFD
+
+/* Define to 1 if you have the declaration of `ecvt', and to 0 if you don't.
+   */
+#undef HAVE_DECL_ECVT
+
+/* Define to 1 if you have the declaration of `execvpe', and to 0 if you
+   don't. */
+#undef HAVE_DECL_EXECVPE
+
+/* Define to 1 if you have the declaration of `fchdir', and to 0 if you don't.
+   */
+#define HAVE_DECL_FCHDIR 0
+
+/* Define to 1 if you have the declaration of `fcloseall', and to 0 if you
+   don't. */
+#undef HAVE_DECL_FCLOSEALL
+
+/* Define to 1 if you have the declaration of `fcvt', and to 0 if you don't.
+   */
+#undef HAVE_DECL_FCVT
+
+/* Define to 1 if you have the declaration of `fdopendir', and to 0 if you
+   don't. */
+#undef HAVE_DECL_FDOPENDIR
+
+/* Define to 1 if you have the declaration of `feof_unlocked', and to 0 if you
+   don't. */
+#undef HAVE_DECL_FEOF_UNLOCKED
+
+/* Define to 1 if you have the declaration of `ferror_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FERROR_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fflush_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FFLUSH_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fgets_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FGETS_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fputc_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FPUTC_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fputs_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FPUTS_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fread_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FREAD_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fwrite_unlocked', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FWRITE_UNLOCKED
+
+/* Define to 1 if you have the declaration of `gcvt', and to 0 if you don't.
+   */
+#undef HAVE_DECL_GCVT
+
+/* Define to 1 if you have the declaration of `getchar_unlocked', and to 0 if
+   you don't. */
+#define HAVE_DECL_GETCHAR_UNLOCKED 0
+
+/* Define to 1 if you have the declaration of `getc_unlocked', and to 0 if you
+   don't. */
+#define HAVE_DECL_GETC_UNLOCKED 0
+
+/* Define to 1 if you have the declaration of `getdtablesize', and to 0 if you
+   don't. */
+#undef HAVE_DECL_GETDTABLESIZE
+
+/* Define to 1 if you have the declaration of `inet_pton', and to 0 if you
+   don't. */
+#undef HAVE_DECL_INET_PTON
+
+/* Define to 1 if you have the declaration of `isblank', and to 0 if you
+   don't. */
+#define HAVE_DECL_ISBLANK 0
+
+/* Define to 1 if you have the declaration of `iswblank', and to 0 if you
+   don't. */
+#define HAVE_DECL_ISWBLANK 1
+
+/* Define to 1 if you have the declaration of `mbrlen', and to 0 if you don't.
+   */
+#define HAVE_DECL_MBRLEN 1
+
+/* Define to 1 if you have the declaration of `mbrtowc', and to 0 if you
+   don't. */
+#define HAVE_DECL_MBRTOWC 1
+
+/* Define to 1 if you have the declaration of `mbsinit', and to 0 if you
+   don't. */
+#define HAVE_DECL_MBSINIT 0
+
+/* Define to 1 if you have the declaration of `mbsrtowcs', and to 0 if you
+   don't. */
+#define HAVE_DECL_MBSRTOWCS 0
+
+/* Define to 1 if you have the declaration of `memrchr', and to 0 if you
+   don't. */
+#define HAVE_DECL_MEMRCHR 0
+
+/* Define to 1 if you have the declaration of `program_invocation_name', and
+   to 0 if you don't. */
+#define HAVE_DECL_PROGRAM_INVOCATION_NAME 0
+
+/* Define to 1 if you have the declaration of `program_invocation_short_name',
+   and to 0 if you don't. */
+#define HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME 0
+
+/* Define to 1 if you have the declaration of `putchar_unlocked', and to 0 if
+   you don't. */
+#define HAVE_DECL_PUTCHAR_UNLOCKED 0
+
+/* Define to 1 if you have the declaration of `putc_unlocked', and to 0 if you
+   don't. */
+#define HAVE_DECL_PUTC_UNLOCKED 0
+
+/* Define to 1 if you have the declaration of `setenv', and to 0 if you don't.
+   */
+#define HAVE_DECL_SETENV 0
+
+/* Define to 1 if you have the declaration of `sleep', and to 0 if you don't.
+   */
+#define HAVE_DECL_SLEEP 0
+
+/* Define to 1 if you have the declaration of `snprintf', and to 0 if you
+   don't. */
+#define HAVE_DECL_SNPRINTF 1
+
+/* Define to 1 if you have the declaration of `strdup', and to 0 if you don't.
+   */
+#define HAVE_DECL_STRDUP 1
+
+/* Define to 1 if you have the declaration of `strerror_r', and to 0 if you
+   don't. */
+#define HAVE_DECL_STRERROR_R 1
+
+/* Define to 1 if you have the declaration of `strnlen', and to 0 if you
+   don't. */
+#define HAVE_DECL_STRNLEN 1
+
+/* Define to 1 if you have the declaration of `strtoimax', and to 0 if you
+   don't. */
+#define HAVE_DECL_STRTOIMAX 1
+
+/* Define to 1 if you have the declaration of `strtoll', and to 0 if you
+   don't. */
+#define HAVE_DECL_STRTOLL 1
+
+/* Define to 1 if you have the declaration of `strtoull', and to 0 if you
+   don't. */
+#define HAVE_DECL_STRTOULL 1
+
+/* Define to 1 if you have the declaration of `strtoumax', and to 0 if you
+   don't. */
+#define HAVE_DECL_STRTOUMAX 1
+
+/* Define to 1 if you have the declaration of `towlower', and to 0 if you
+   don't. */
+#define HAVE_DECL_TOWLOWER 1
+
+/* Define to 1 if you have the declaration of `unsetenv', and to 0 if you
+   don't. */
+#define HAVE_DECL_UNSETENV 0
+
+/* Define to 1 if you have the declaration of `wcrtomb', and to 0 if you
+   don't. */
+#define HAVE_DECL_WCRTOMB 0
+
+/* Define to 1 if you have the declaration of `wcsdup', and to 0 if you don't.
+   */
+#define HAVE_DECL_WCSDUP 1
+
+/* Define to 1 if you have the declaration of `wctob', and to 0 if you don't.
+   */
+#define HAVE_DECL_WCTOB 1
+
+/* Define to 1 if you have the declaration of `wcwidth', and to 0 if you
+   don't. */
+#define HAVE_DECL_WCWIDTH 0
+
+/* Define to 1 if you have the declaration of `_putenv', and to 0 if you
+   don't. */
+#define HAVE_DECL__PUTENV 1
+
+/* Define to 1 if you have the declaration of `_snprintf', and to 0 if you
+   don't. */
+#undef HAVE_DECL__SNPRINTF
+
+/* Define to 1 if you have the declaration of `__argv', and to 0 if you don't.
+   */
+#define HAVE_DECL___ARGV 1
+
+/* Define to 1 if you have the declaration of `__fpending', and to 0 if you
+   don't. */
+#define HAVE_DECL___FPENDING 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#undef HAVE_DIRENT_H
+
+/* Define to 1 if you have the `dirfd' function. */
+#undef HAVE_DIRFD
+
+/* Define to 1 if you have the `duplocale' function. */
+#undef HAVE_DUPLOCALE
+
+/* Define if you have the declaration of environ. */
+#undef HAVE_ENVIRON_DECL
+
+/* Define if the locale_t type contains insufficient information, as on
+   OpenBSD. */
+#undef HAVE_FAKE_LOCALES
+
+/* Define to 1 if you have the `fchdir' function. */
+#undef HAVE_FCHDIR
+
+/* Define to 1 if you have the `fcntl' function. */
+#undef HAVE_FCNTL
+
+/* Define to 1 if you have the `fdopendir' function. */
+#undef HAVE_FDOPENDIR
+
+/* Define to 1 if you have the <features.h> header file. */
+#undef HAVE_FEATURES_H
+
+/* Define to 1 if you have the `fnmatch' function. */
+#undef HAVE_FNMATCH
+
+/* Define to 1 if you have the <fnmatch.h> header file. */
+#undef HAVE_FNMATCH_H
+
+/* Define to 1 if you have the `freelocale' function. */
+#undef HAVE_FREELOCALE
+
+/* Define if the 'free' function is guaranteed to preserve errno. */
+#undef HAVE_FREE_POSIX
+
+/* Define to 1 if you have the `fstatat' function. */
+#undef HAVE_FSTATAT
+
+/* Define to 1 if you have the `fstatfs' function. */
+#undef HAVE_FSTATFS
+
+/* Define to 1 if you have the `ftruncate' function. */
+#undef HAVE_FTRUNCATE
+
+/* Define to 1 if you have the `getdtablesize' function. */
+#undef HAVE_GETDTABLESIZE
+
+/* Define to 1 if you have the `getexecname' function. */
+#undef HAVE_GETEXECNAME
+
+/* Define to 1 if you have the `getlocalename_l' function. */
+#undef HAVE_GETLOCALENAME_L
+
+/* Define to 1 if you have the <getopt.h> header file. */
+#undef HAVE_GETOPT_H
+
+/* Define to 1 if you have the `getopt_long_only' function. */
+#undef HAVE_GETOPT_LONG_ONLY
+
+/* Define to 1 if you have the `getprogname' function. */
+#define HAVE_GETPROGNAME 1
+const char *getprogname(void);
+
+/* Define to 1 if you have the `getrlimit' function. */
+#undef HAVE_GETRLIMIT
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+#undef HAVE_GETTEXT
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#undef HAVE_GETTIMEOFDAY
+
+/* Define if the uselocale exists, may be safely called, and returns
+   sufficient information. */
+#undef HAVE_GOOD_USELOCALE
+
+/* Define if you have the iconv() function and it works. */
+#undef HAVE_ICONV
+
+/* Define to 1 if you have the <iconv.h> header file. */
+#undef HAVE_ICONV_H
+
+/* Define to 1 if you have the `inet_pton' function. */
+#undef HAVE_INET_PTON
+
+/* Define to 1 if the compiler supports one of the keywords 'inline',
+   '__inline__', '__inline' and effectively inlines functions marked as such.
+   */
+#undef HAVE_INLINE
+
+/* Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>. */
+#undef HAVE_INTMAX_T
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define if <inttypes.h> exists, doesn't clash with <sys/types.h>, and
+   declares uintmax_t. */
+#undef HAVE_INTTYPES_H_WITH_UINTMAX
+
+/* Define to 1 if you have the `ioctl' function. */
+#undef HAVE_IOCTL
+
+/* Define to 1 if <sys/socket.h> defines AF_INET. */
+#undef HAVE_IPV4
+
+/* Define to 1 if <sys/socket.h> defines AF_INET6. */
+#undef HAVE_IPV6
+
+/* Define to 1 if you have the `isascii' function. */
+#undef HAVE_ISASCII
+
+/* Define to 1 if you have the `isblank' function. */
+#undef HAVE_ISBLANK
+
+/* Define to 1 if you have the `iswblank' function. */
+#undef HAVE_ISWBLANK
+
+/* Define to 1 if you have the `iswcntrl' function. */
+#undef HAVE_ISWCNTRL
+
+/* Define to 1 if you have the `iswctype' function. */
+#undef HAVE_ISWCTYPE
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+#undef HAVE_LANGINFO_CODESET
+
+/* Define to 1 if you have the <langinfo.h> header file. */
+#undef HAVE_LANGINFO_H
+
+/* Define if your <locale.h> file defines LC_MESSAGES. */
+#undef HAVE_LC_MESSAGES
+
+/* Define to 1 if you have the <libintl.h> header file. */
+#undef HAVE_LIBINTL_H
+
+/* Define to 1 if you have the Perl Compatible Regular Expressions library
+   (-lpcre). */
+#undef HAVE_LIBPCRE
+
+/* Define if you have the libsigsegv library. */
+#undef HAVE_LIBSIGSEGV
+
+/* Define to 1 if you have the <limits.h> header file. */
+#undef HAVE_LIMITS_H
+
+/* Define to 1 if the system has the type 'long long int'. */
+#undef HAVE_LONG_LONG_INT
+
+/* Define to 1 if you have the `lstat' function. */
+#undef HAVE_LSTAT
+
+/* Define to 1 if you have the <malloc.h> header file. */
+#undef HAVE_MALLOC_H
+
+/* Define if malloc, realloc, and calloc set errno on allocation failure. */
+#undef HAVE_MALLOC_POSIX
+
+/* Define to 1 if mmap()'s MAP_ANONYMOUS flag is available after including
+   config.h and <sys/mman.h>. */
+#undef HAVE_MAP_ANONYMOUS
+
+/* Define to 1 if you have the `mbrlen' function. */
+#undef HAVE_MBRLEN
+
+/* Define to 1 if you have the `mbrtowc' function. */
+#undef HAVE_MBRTOWC
+
+/* Define to 1 if you have the `mbsinit' function. */
+#undef HAVE_MBSINIT
+
+/* Define to 1 if you have the `mbslen' function. */
+#undef HAVE_MBSLEN
+
+/* Define to 1 if you have the `mbsrtowcs' function. */
+#undef HAVE_MBSRTOWCS
+
+/* Define to 1 if <wchar.h> declares mbstate_t. */
+#undef HAVE_MBSTATE_T
+
+/* Define to 1 if you have the `mbtowc' function. */
+#undef HAVE_MBTOWC
+
+/* Define to 1 if you have the `mempcpy' function. */
+#define HAVE_MEMPCPY 1
+
+#include <string.h>
+static _inline void *mempcpy(void *pvDst, const void *pvSrc, size_t cb)
+{
+    return (char *)memcpy(pvDst, pvSrc, cb) + cb;
+}
+
+/* Define to 1 if you have the `memrchr' function. */
+#undef HAVE_MEMRCHR
+void *memrchr(const void *, int, size_t);
+
+/* Define to 1 if you have the <minix/config.h> header file. */
+#undef HAVE_MINIX_CONFIG_H
+
+/* Define to 1 if <limits.h> defines the MIN and MAX macros. */
+#undef HAVE_MINMAX_IN_LIMITS_H
+
+/* Define to 1 if <sys/param.h> defines the MIN and MAX macros. */
+#undef HAVE_MINMAX_IN_SYS_PARAM_H
+
+/* Define to 1 if you have the `mprotect' function. */
+#undef HAVE_MPROTECT
+
+/* Define to 1 on MSVC platforms that have the "invalid parameter handler"
+   concept. */
+#undef HAVE_MSVC_INVALID_PARAMETER_HANDLER
+
+/* Define if the locale_t type does not contain the name of each locale
+   category. */
+#undef HAVE_NAMELESS_LOCALES
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+#undef HAVE_NDIR_H
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#undef HAVE_NETDB_H
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#undef HAVE_NETINET_IN_H
+
+/* Define to 1 if you have the `newlocale' function. */
+#undef HAVE_NEWLOCALE
+
+/* Define to 1 if you have the `nl_langinfo' function. */
+#undef HAVE_NL_LANGINFO
+
+/* Define to 1 if the system has obstacks that work with any size object. */
+#undef HAVE_OBSTACK
+
+/* Define to 1 if you have the `openat' function. */
+#define HAVE_OPENAT 1
+
+/* Define to 1 if you have the `opendir' function. */
+#define HAVE_OPENDIR 1
+
+/* Define to 1 if you have the <OS.h> header file. */
+#undef HAVE_OS_H
+
+/* Define to 1 if you have the `pipe' function. */
+#undef HAVE_PIPE
+
+/* Define if you have the <pthread.h> header and the POSIX threads API. */
+#undef HAVE_PTHREAD_API
+
+/* Define to 1 if you have the `pthread_atfork' function. */
+#undef HAVE_PTHREAD_ATFORK
+
+/* Define to 1 if you have the <pthread.h> header file. */
+#undef HAVE_PTHREAD_H
+
+/* Define if the <pthread.h> defines PTHREAD_MUTEX_RECURSIVE. */
+#undef HAVE_PTHREAD_MUTEX_RECURSIVE
+
+/* Define if the POSIX multithreading library has read/write locks. */
+#undef HAVE_PTHREAD_RWLOCK
+
+/* Define if the 'pthread_rwlock_rdlock' function prefers a writer to a
+   reader. */
+#undef HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER
+
+/* Define to 1 if the pthread_sigmask function can be used (despite bugs). */
+#undef HAVE_PTHREAD_SIGMASK
+
+/* Define to 1 if the system has the type `pthread_spinlock_t'. */
+#undef HAVE_PTHREAD_SPINLOCK_T
+
+/* Define to 1 if the system has the type `pthread_t'. */
+#undef HAVE_PTHREAD_T
+
+/* Define to 1 if you have the `raise' function. */
+#undef HAVE_RAISE
+
+/* Define to 1 if you have the `rawmemchr' function. */
+#define HAVE_RAWMEMCHR 1
+
+
+#include <string.h>
+static _inline void *rawmemchr(const void *pv, int ch)
+{
+    return memchr(pv, ch, ~(size_t)0 / 4);
+}
+
+/* Define to 1 if you have the `readdir' function. */
+#define HAVE_READDIR 1
+
+/* Define to 1 if you have the `reallocarray' function. */
+#undef HAVE_REALLOCARRAY
+
+/* Define to 1 if the system has the type `sa_family_t'. */
+#undef HAVE_SA_FAMILY_T
+
+/* Define to 1 if you have the <sched.h> header file. */
+#undef HAVE_SCHED_H
+
+/* Define to 1 if you have the <sdkddkver.h> header file. */
+#undef HAVE_SDKDDKVER_H
+
+/* Define to 1 if you have the <search.h> header file. */
+#undef HAVE_SEARCH_H
+
+/* Define to 1 if you have the `setdtablesize' function. */
+#undef HAVE_SETDTABLESIZE
+
+/* Define to 1 if you have the `setenv' function. */
+#undef HAVE_SETENV
+
+/* Define to 1 if you have the `setlocale' function. */
+#define HAVE_SETLOCALE 1
+
+/* Define to 1 if you have the `setrlimit' function. */
+#undef HAVE_SETRLIMIT
+
+/* Define to 1 if you have the `shutdown' function. */
+#undef HAVE_SHUTDOWN
+
+/* Define to 1 if you have the `sigaction' function. */
+#undef HAVE_SIGACTION
+
+/* Define to 1 if you have the `sigaltstack' function. */
+#undef HAVE_SIGALTSTACK
+
+/* Define to 1 if the system has the type `siginfo_t'. */
+#undef HAVE_SIGINFO_T
+
+/* Define to 1 if you have the `siginterrupt' function. */
+#undef HAVE_SIGINTERRUPT
+
+/* Define to 1 if 'sig_atomic_t' is a signed integer type. */
+#undef HAVE_SIGNED_SIG_ATOMIC_T
+
+/* Define to 1 if 'wchar_t' is a signed integer type. */
+#undef HAVE_SIGNED_WCHAR_T
+
+/* Define to 1 if 'wint_t' is a signed integer type. */
+#undef HAVE_SIGNED_WINT_T
+
+/* Define to 1 if the system has the type `sigset_t'. */
+#undef HAVE_SIGSET_T
+
+/* Define to 1 if you have the `sleep' function. */
+#undef HAVE_SLEEP
+
+/* Define to 1 if you have the `snprintf' function. */
+#undef HAVE_SNPRINTF
+
+/* Define if the return value of the snprintf function is the number of of
+   bytes (excluding the terminating NUL) that would have been produced if the
+   buffer had been large enough. */
+#undef HAVE_SNPRINTF_RETVAL_C99
+
+/* Define if the string produced by the snprintf function is always NUL
+   terminated. */
+#undef HAVE_SNPRINTF_TRUNCATION_C99
+
+/* Define if the locale_t type is as on Solaris 11.4. */
+#undef HAVE_SOLARIS114_LOCALES
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define if <stdint.h> exists, doesn't clash with <sys/types.h>, and declares
+   uintmax_t. */
+#undef HAVE_STDINT_H_WITH_UINTMAX
+
+/* Define to 1 if you have the <stdio_ext.h> header file. */
+#undef HAVE_STDIO_EXT_H
+
+/* Define to 1 if you have the <stdio.h> header file. */
+#undef HAVE_STDIO_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the `stpcpy' function. */
+#undef HAVE_STPCPY
+
+/* Define to 1 if you have the `strerror_r' function. */
+#define HAVE_STRERROR_R 1
+#include <string.h>
+static _inline int strerror_r(int iErr, char *pszDst, size_t cbDst)
+{
+    return strerror_s(pszDst, cbDst, iErr);
+}
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the `strnlen' function. */
+#undef HAVE_STRNLEN
+
+/* Define to 1 if you have the `strtoimax' function. */
+#undef HAVE_STRTOIMAX
+
+/* Define to 1 if you have the `strtoll' function. */
+#undef HAVE_STRTOLL
+
+/* Define to 1 if you have the `strtoull' function. */
+#undef HAVE_STRTOULL
+
+/* Define to 1 if you have the `strtoumax' function. */
+#undef HAVE_STRTOUMAX
+
+/* Define if there is a member named d_type in the struct describing directory
+   headers. */
+#undef HAVE_STRUCT_DIRENT_D_TYPE
+
+/* Define to 1 if `decimal_point' is a member of `struct lconv'. */
+#undef HAVE_STRUCT_LCONV_DECIMAL_POINT
+
+/* Define to 1 if `sa_sigaction' is a member of `struct sigaction'. */
+#undef HAVE_STRUCT_SIGACTION_SA_SIGACTION
+
+/* Define to 1 if the system has the type `struct sockaddr_storage'. */
+#undef HAVE_STRUCT_SOCKADDR_STORAGE
+
+/* Define to 1 if `ss_family' is a member of `struct sockaddr_storage'. */
+#undef HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY
+
+/* Define to 1 if `f_type' is a member of `struct statfs'. */
+#undef HAVE_STRUCT_STATFS_F_TYPE
+
+/* Define to 1 if `st_atimensec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIMENSEC
+
+/* Define to 1 if `st_atimespec.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC
+
+/* Define to 1 if `st_atim.st__tim.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC
+
+/* Define to 1 if `st_atim.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
+
+/* Define to 1 if `st_birthtimensec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC
+
+/* Define to 1 if `st_birthtimespec.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC
+
+/* Define to 1 if `st_birthtim.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC
+
+/* Define to 1 if you have the `symlink' function. */
+#undef HAVE_SYMLINK
+
+/* Define to 1 if you have the <sys/bitypes.h> header file. */
+#undef HAVE_SYS_BITYPES_H
+
+/* Define to 1 if you have the <sys/cdefs.h> header file. */
+#undef HAVE_SYS_CDEFS_H
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+#undef HAVE_SYS_DIR_H
+
+/* Define to 1 if you have the <sys/inttypes.h> header file. */
+#undef HAVE_SYS_INTTYPES_H
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#undef HAVE_SYS_IOCTL_H
+
+/* Define to 1 if you have the <sys/mman.h> header file. */
+#undef HAVE_SYS_MMAN_H
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+#undef HAVE_SYS_NDIR_H
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#undef HAVE_SYS_PARAM_H
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#undef HAVE_SYS_SELECT_H
+
+/* Define to 1 if you have the <sys/single_threaded.h> header file. */
+#undef HAVE_SYS_SINGLE_THREADED_H
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#undef HAVE_SYS_SOCKET_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#undef HAVE_SYS_TIME_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#undef HAVE_SYS_UIO_H
+
+/* Define to 1 if you have the <sys/vfs.h> header file. */
+#undef HAVE_SYS_VFS_H
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+#undef HAVE_SYS_WAIT_H
+
+/* Define to 1 if you have the `thrd_create' function. */
+#undef HAVE_THRD_CREATE
+
+/* Define to 1 if you have the <threads.h> header file. */
+#undef HAVE_THREADS_H
+
+/* Define to 1 if you have the `towlower' function. */
+#undef HAVE_TOWLOWER
+
+/* Define to 1 if you have the `tsearch' function. */
+#undef HAVE_TSEARCH
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to 1 if you have the `unsetenv' function. */
+#undef HAVE_UNSETENV
+
+/* Define to 1 if the system has the type 'unsigned long long int'. */
+#undef HAVE_UNSIGNED_LONG_LONG_INT
+
+/* Define to 1 if you have the `uselocale' function. */
+#undef HAVE_USELOCALE
+
+/* Define if you have a global __progname variable */
+#undef HAVE_VAR___PROGNAME
+
+/* Define to 1 if you have the `vasnprintf' function. */
+#undef HAVE_VASNPRINTF
+
+/* Define to 1 or 0, depending whether the compiler supports simple visibility
+   declarations. */
+#undef HAVE_VISIBILITY
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#undef HAVE_WCHAR_H
+
+/* Define if you have the 'wchar_t' type. */
+#undef HAVE_WCHAR_T
+
+/* Define to 1 if you have the `wcrtomb' function. */
+#undef HAVE_WCRTOMB
+
+/* Define to 1 if you have the `wcslen' function. */
+#undef HAVE_WCSLEN
+
+/* Define to 1 if you have the `wcsnlen' function. */
+#undef HAVE_WCSNLEN
+
+/* Define to 1 if you have the `wctob' function. */
+#undef HAVE_WCTOB
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#undef HAVE_WCTYPE_H
+
+/* Define to 1 if you have the `wcwidth' function. */
+#undef HAVE_WCWIDTH
+
+/* Define to 1 if the compiler and linker support weak declarations of
+   symbols. */
+#undef HAVE_WEAK_SYMBOLS
+
+/* Define to 1 if you have the <winsock2.h> header file. */
+#undef HAVE_WINSOCK2_H
+
+/* Define if you have the 'wint_t' type. */
+#undef HAVE_WINT_T
+
+/* Define to 1 if you have the `wmempcpy' function. */
+#undef HAVE_WMEMPCPY
+
+/* Define to 1 if fstatat (..., 0) works. For example, it does not work in AIX
+   7.1. */
+#undef HAVE_WORKING_FSTATAT_ZERO_FLAG
+
+/* Define to 1 if O_NOATIME works. */
+#undef HAVE_WORKING_O_NOATIME
+
+/* Define to 1 if O_NOFOLLOW works. */
+#undef HAVE_WORKING_O_NOFOLLOW
+
+/* Define if you have the sigaltstack() function and it works. */
+#undef HAVE_WORKING_SIGALTSTACK
+
+/* Define if the uselocale function exists and may safely be called. */
+#undef HAVE_WORKING_USELOCALE
+
+/* Define to 1 if you have the <ws2tcpip.h> header file. */
+#undef HAVE_WS2TCPIP_H
+
+/* Define to 1 if you have the <xlocale.h> header file. */
+#undef HAVE_XLOCALE_H
+
+/* Define to 1 if the system has the type `_Bool'. */
+#undef HAVE__BOOL
+
+/* Define to 1 if you have the `_chsize' function. */
+#undef HAVE__CHSIZE
+
+/* Define to 1 if you have the `_set_invalid_parameter_handler' function. */
+#undef HAVE__SET_INVALID_PARAMETER_HANDLER
+
+/* Define to 1 if the compiler supports __builtin_expect,
+   and to 2 if <builtins.h> does.  */
+#undef HAVE___BUILTIN_EXPECT
+#ifndef HAVE___BUILTIN_EXPECT
+# define __builtin_expect(e, c) (e)
+#elif HAVE___BUILTIN_EXPECT == 2
+# include <builtins.h>
+#endif
+    
+
+/* Define to 1 if the system has the type `__fsword_t'. */
+#undef HAVE___FSWORD_T
+
+/* Define to 1 if the compiler supports the keyword '__inline'. */
+#undef HAVE___INLINE
+
+/* Define to 1 if you have the `__xpg_strerror_r' function. */
+#undef HAVE___XPG_STRERROR_R
+
+/* Define as const if the declaration of iconv() needs const. */
+#undef ICONV_CONST
+
+/* Define to a symbolic name denoting the flavor of iconv_open()
+   implementation. */
+#undef ICONV_FLAVOR
+
+/* Define if localename.c overrides newlocale(), duplocale(), freelocale(). */
+#undef LOCALENAME_ENHANCE_LOCALE_FUNCS
+
+/* Define to 1 if lseek does not detect pipes. */
+#undef LSEEK_PIPE_BROKEN
+
+/* Define to 1 if 'lstat' dereferences a symlink specified with a trailing
+   slash. */
+#undef LSTAT_FOLLOWS_SLASHED_SYMLINK
+
+/* If malloc(0) is != NULL, define this to 1. Otherwise define this to 0. */
+#undef MALLOC_0_IS_NONNULL
+
+/* Define to a substitute value for mmap()'s MAP_ANONYMOUS flag. */
+#undef MAP_ANONYMOUS
+
+/* Define if the mbrtowc function does not return (size_t) -2 for empty input.
+   */
+#undef MBRTOWC_EMPTY_INPUT_BUG
+
+/* Define if the mbrtowc function may signal encoding errors in the C locale.
+   */
+#undef MBRTOWC_IN_C_LOCALE_MAYBE_EILSEQ
+
+/* Define if the mbrtowc function has the NULL pwc argument bug. */
+#undef MBRTOWC_NULL_ARG1_BUG
+
+/* Define if the mbrtowc function has the NULL string argument bug. */
+#undef MBRTOWC_NULL_ARG2_BUG
+
+/* Define if the mbrtowc function does not return 0 for a NUL character. */
+#undef MBRTOWC_NUL_RETVAL_BUG
+
+/* Define if the mbrtowc function returns a wrong return value. */
+#undef MBRTOWC_RETVAL_BUG
+
+/* Define if the mbrtowc function stores a wide character when reporting
+   incomplete input. */
+#undef MBRTOWC_STORES_INCOMPLETE_BUG
+
+/* Use GNU style printf and scanf.  */
+#ifndef __USE_MINGW_ANSI_STDIO
+# undef __USE_MINGW_ANSI_STDIO
+#endif
+
+
+/* Define to 1 on musl libc. */
+#undef MUSL_LIBC
+
+/* Define to 1 if assertions should be disabled. */
+#undef NDEBUG
+
+/* Define to 1 to enable general improvements of setlocale. */
+#undef NEED_SETLOCALE_IMPROVED
+
+/* Define to 1 to enable a multithread-safety fix of setlocale. */
+#undef NEED_SETLOCALE_MTSAFE
+
+/* Define to 1 if nl_langinfo is multithread-safe. */
+#undef NL_LANGINFO_MTSAFE
+
+/* Define to 1 if open() fails to recognize a trailing slash. */
+#undef OPEN_TRAILING_SLASH_BUG
+
+/* Name of package */
+#define PACKAGE "kmk_grep"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bird-kbuild-spam-ixx@anduin.net"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "kmk_grep"
+
+/* String identifying the packager of this software */
+#undef PACKAGE_PACKAGER
+
+/* Packager info for bug reports (URL/e-mail/...) */
+#undef PACKAGE_PACKAGER_BUG_REPORTS
+
+/* Packager-specific version information */
+#undef PACKAGE_PACKAGER_VERSION
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "3.7"
+
+/* Define to the type that is the result of default argument promotions of
+   type mode_t. */
+#define PROMOTED_MODE_T uintptr_t
+
+/* Define if pthread_create is an inline function. */
+#undef PTHREAD_CREATE_IS_INLINE
+
+/* Define if the pthread_in_use() detection is hard. */
+#undef PTHREAD_IN_USE_DETECTION_HARD
+
+/* Define to 1 if pthread_sigmask(), when it fails, returns -1 and sets errno.
+   */
+#undef PTHREAD_SIGMASK_FAILS_WITH_ERRNO
+
+/* Define to 1 if pthread_sigmask may return 0 and have no effect. */
+#undef PTHREAD_SIGMASK_INEFFECTIVE
+
+/* Define to 1 if pthread_sigmask() unblocks signals incorrectly. */
+#undef PTHREAD_SIGMASK_UNBLOCK_BUG
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+   'ptrdiff_t'. */
+#undef PTRDIFF_T_SUFFIX
+
+/* Define to 1 if gnulib's dirfd() replacement is used. */
+#undef REPLACE_DIRFD
+
+/* Define to 1 if gnulib's fchdir() replacement is used. */
+#define REPLACE_FCHDIR 1
+
+/* Define to 1 if stat needs help when passed a file name with a trailing
+   slash */
+#undef REPLACE_FUNC_STAT_FILE
+
+/* Define if nl_langinfo exists but is overridden by gnulib. */
+#undef REPLACE_NL_LANGINFO
+
+/* Define to 1 if open() should work around the inability to open a directory.
+   */
+#undef REPLACE_OPEN_DIRECTORY
+
+/* Define to 1 if strerror(0) does not return a message implying success. */
+#undef REPLACE_STRERROR_0
+
+/* Define if vasnprintf exists but is overridden by gnulib. */
+#undef REPLACE_VASNPRINTF
+
+/* Define to 1 if setlocale (LC_ALL, NULL) is multithread-safe. */
+#undef SETLOCALE_NULL_ALL_MTSAFE
+
+/* Define to 1 if setlocale (category, NULL) is multithread-safe. */
+#undef SETLOCALE_NULL_ONE_MTSAFE
+
+/* Define if sigaltstack() interprets the stack_t.ss_sp field incorrectly, as
+   the highest address of the alternate stack range rather than as the lowest
+   address. */
+#undef SIGALTSTACK_SS_REVERSED
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+   'sig_atomic_t'. */
+#undef SIG_ATOMIC_T_SUFFIX
+
+/* Define as the maximum value of type 'size_t', if the system doesn't define
+   it. */
+#ifndef SIZE_MAX
+# undef SIZE_MAX
+#endif
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+   'size_t'. */
+#undef SIZE_T_SUFFIX
+
+/* Define on Solaris 11 and its derivates. */
+#undef SOLARIS11
+
+/* Define as the direction of stack growth for your system. STACK_DIRECTION >
+   0 => grows toward higher addresses STACK_DIRECTION < 0 => grows toward
+   lower addresses STACK_DIRECTION = 0 => spaghetti stack. */
+#undef STACK_DIRECTION
+
+/* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */
+#undef STAT_MACROS_BROKEN
+
+/* Define to 1 if all of the C90 standard headers exist (not just the ones
+   required in a freestanding environment). This macro is provided for
+   backward compatibility; new code need not use it. */
+#undef STDC_HEADERS
+
+/* Define to 1 if strerror_r returns char *. */
+#undef STRERROR_R_CHAR_P
+
+/* Define to 1 if the type of the st_atim member of a struct stat is struct
+   timespec. */
+#undef TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC
+
+/* Define if the combination of the ISO C and POSIX multithreading APIs can be
+   used. */
+#undef USE_ISOC_AND_POSIX_THREADS
+
+/* Define if the ISO C multithreading library can be used. */
+#undef USE_ISOC_THREADS
+
+/* Define if the POSIX multithreading library can be used. */
+#undef USE_POSIX_THREADS
+
+/* Define if references to the POSIX multithreading library are satisfied by
+   libc. */
+#undef USE_POSIX_THREADS_FROM_LIBC
+
+/* Define if references to the POSIX multithreading library should be made
+   weak. */
+#undef USE_POSIX_THREADS_WEAK
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable general extensions on macOS.  */
+#ifndef _DARWIN_C_SOURCE
+# undef _DARWIN_C_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
+/* Enable X/Open compliant socket functions that do not require linking
+   with -lxnet on HP-UX 11.11.  */
+#ifndef _HPUX_ALT_XOPEN_SOCKET_API
+# undef _HPUX_ALT_XOPEN_SOCKET_API
+#endif
+/* Identify the host operating system as Minix.
+   This macro does not affect the system headers' behavior.
+   A future release of Autoconf may stop defining this macro.  */
+#ifndef _MINIX
+# undef _MINIX
+#endif
+/* Enable general extensions on NetBSD.
+   Enable NetBSD compatibility extensions on Minix.  */
+#ifndef _NETBSD_SOURCE
+# undef _NETBSD_SOURCE
+#endif
+/* Enable OpenBSD compatibility extensions on NetBSD.
+   Oddly enough, this does nothing on OpenBSD.  */
+#ifndef _OPENBSD_SOURCE
+# undef _OPENBSD_SOURCE
+#endif
+/* Define to 1 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_SOURCE
+# undef _POSIX_SOURCE
+#endif
+/* Define to 2 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_1_SOURCE
+# undef _POSIX_1_SOURCE
+#endif
+/* Enable POSIX-compatible threading on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-5:2014.  */
+#ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+# undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-1:2014.  */
+#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+# undef __STDC_WANT_IEC_60559_BFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-2:2015.  */
+#ifndef __STDC_WANT_IEC_60559_DFP_EXT__
+# undef __STDC_WANT_IEC_60559_DFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-4:2015.  */
+#ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__
+# undef __STDC_WANT_IEC_60559_FUNCS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-3:2015.  */
+#ifndef __STDC_WANT_IEC_60559_TYPES_EXT__
+# undef __STDC_WANT_IEC_60559_TYPES_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TR 24731-2:2010.  */
+#ifndef __STDC_WANT_LIB_EXT2__
+# undef __STDC_WANT_LIB_EXT2__
+#endif
+/* Enable extensions specified by ISO/IEC 24747:2009.  */
+#ifndef __STDC_WANT_MATH_SPEC_FUNCS__
+# undef __STDC_WANT_MATH_SPEC_FUNCS__
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable X/Open extensions.  Define to 500 only if necessary
+   to make mbstate_t available.  */
+#ifndef _XOPEN_SOURCE
+# undef _XOPEN_SOURCE
+#endif
+
+
+/* An alias of GNULIB_STDIO_SINGLE_THREAD. */
+#undef USE_UNLOCKED_IO
+
+/* Define if the native Windows multithreading API can be used. */
+#undef USE_WINDOWS_THREADS
+
+/* Version number of package */
+#define VERSION PACKAGE_VERSION
+
+/* Define to 1 if unsetenv returns void instead of int. */
+#undef VOID_UNSETENV
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+   'wchar_t'. */
+#undef WCHAR_T_SUFFIX
+
+/* Define if the wcrtomb function does not work in the C locale. */
+#undef WCRTOMB_C_LOCALE_BUG
+
+/* Define if the wcrtomb function has an incorrect return value. */
+#undef WCRTOMB_RETVAL_BUG
+
+/* Define if WSAStartup is needed. */
+#undef WINDOWS_SOCKETS
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+   'wint_t'. */
+#undef WINT_T_SUFFIX
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+#  define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+#  undef WORDS_BIGENDIAN
+# endif
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
+/* True if the compiler says it groks GNU C version MAJOR.MINOR.  */
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define _GL_GNUC_PREREQ(major, minor) \
+    ((major) < __GNUC__ + ((minor) <= __GNUC_MINOR__))
+#else
+# define _GL_GNUC_PREREQ(major, minor) 0
+#endif
+
+
+/* Define to enable the declarations of ISO C 11 types and functions. */
+#undef _ISOC11_SOURCE
+
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
+
+/* Define to 1 on Solaris. */
+#undef _LCONV_C99
+
+/* The _Noreturn keyword of C11.  */
+#ifndef _Noreturn
+# if (defined __cplusplus \
+      && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
+          || (defined _MSC_VER && 1900 <= _MSC_VER)) \
+      && 0)
+    /* [[noreturn]] is not practically usable, because with it the syntax
+         extern _Noreturn void func (...);
+       would not be valid; such a declaration would only be valid with 'extern'
+       and '_Noreturn' swapped, or without the 'extern' keyword.  However, some
+       AIX system header files and several gnulib header files use precisely
+       this syntax with 'extern'.  */
+#  define _Noreturn [[noreturn]]
+# elif ((!defined __cplusplus || defined __clang__) \
+        && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
+            || (!defined __STRICT_ANSI__ \
+                && (_GL_GNUC_PREREQ (4, 7) \
+                    || (defined __apple_build_version__ \
+                        ? 6000000 <= __apple_build_version__ \
+                        : 3 < __clang_major__ + (5 <= __clang_minor__))))))
+   /* _Noreturn works as-is.  */
+# elif _GL_GNUC_PREREQ (2, 8) || defined __clang__ || 0x5110 <= __SUNPRO_C
+#  define _Noreturn __attribute__ ((__noreturn__))
+# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
+#  define _Noreturn __declspec (noreturn)
+# else
+#  define _Noreturn
+# endif
+#endif
+
+
+/* Define to 1 in order to get the POSIX compatible declarations of socket
+   functions. */
+#undef _POSIX_PII_SOCKET
+
+/* Define if you want <regex.h> to include <limits.h>, so that it consistently
+   overrides <limits.h>'s RE_DUP_MAX. */
+#undef _REGEX_INCLUDE_LIMITS_H
+
+/* Define if you want regoff_t to be at least as wide POSIX requires. */
+#undef _REGEX_LARGE_OFFSETS
+
+/* Number of bits in a timestamp, on hosts where this is settable. */
+#undef _TIME_BITS
+
+/* For standard stat data types on VMS. */
+#undef _USE_STD_STAT
+
+/* Define to rpl_ if the getopt replacement functions and variables should be
+   used. */
+#undef __GETOPT_PREFIX
+
+/* For 64-bit time_t on 32-bit mingw. */
+#undef __MINGW_USE_VC2005_COMPAT
+
+/* Define to 1 if the system <stdint.h> predates C++11. */
+#undef __STDC_CONSTANT_MACROS
+
+/* Define to 1 if the system <stdint.h> predates C++11. */
+#undef __STDC_LIMIT_MACROS
+
+/* The _GL_ASYNC_SAFE marker should be attached to functions that are
+   signal handlers (for signals other than SIGABRT, SIGPIPE) or can be
+   invoked from such signal handlers.  Such functions have some restrictions:
+     * All functions that it calls should be marked _GL_ASYNC_SAFE as well,
+       or should be listed as async-signal-safe in POSIX
+       <https://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_04>
+       section 2.4.3.  Note that malloc(), sprintf(), and fwrite(), in
+       particular, are NOT async-signal-safe.
+     * All memory locations (variables and struct fields) that these functions
+       access must be marked 'volatile'.  This holds for both read and write
+       accesses.  Otherwise the compiler might optimize away stores to and
+       reads from such locations that occur in the program, depending on its
+       data flow analysis.  For example, when the program contains a loop
+       that is intended to inspect a variable set from within a signal handler
+           while (!signal_occurred)
+             ;
+       the compiler is allowed to transform this into an endless loop if the
+       variable 'signal_occurred' is not declared 'volatile'.
+   Additionally, recall that:
+     * A signal handler should not modify errno (except if it is a handler
+       for a fatal signal and ends by raising the same signal again, thus
+       provoking the termination of the process).  If it invokes a function
+       that may clobber errno, it needs to save and restore the value of
+       errno.  */
+#define _GL_ASYNC_SAFE
+
+
+/* Attributes.  */
+#if (defined __has_attribute \
+     && (!defined __clang_minor__ \
+         || 3 < __clang_major__ + (5 <= __clang_minor__)))
+# define _GL_HAS_ATTRIBUTE(attr) __has_attribute (__##attr##__)
+#else
+# define _GL_HAS_ATTRIBUTE(attr) _GL_ATTR_##attr
+# define _GL_ATTR_alloc_size _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_always_inline _GL_GNUC_PREREQ (3, 2)
+# define _GL_ATTR_artificial _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_cold _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_const _GL_GNUC_PREREQ (2, 95)
+# define _GL_ATTR_deprecated _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_diagnose_if 0
+# define _GL_ATTR_error _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_externally_visible _GL_GNUC_PREREQ (4, 1)
+# define _GL_ATTR_fallthrough _GL_GNUC_PREREQ (7, 0)
+# define _GL_ATTR_format _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_leaf _GL_GNUC_PREREQ (4, 6)
+# define _GL_ATTR_malloc _GL_GNUC_PREREQ (3, 0)
+# ifdef _ICC
+#  define _GL_ATTR_may_alias 0
+# else
+#  define _GL_ATTR_may_alias _GL_GNUC_PREREQ (3, 3)
+# endif
+# define _GL_ATTR_noinline _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_nonnull _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_nonstring _GL_GNUC_PREREQ (8, 0)
+# define _GL_ATTR_nothrow _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_packed _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_pure _GL_GNUC_PREREQ (2, 96)
+# define _GL_ATTR_returns_nonnull _GL_GNUC_PREREQ (4, 9)
+# define _GL_ATTR_sentinel _GL_GNUC_PREREQ (4, 0)
+# define _GL_ATTR_unused _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4)
+#endif
+
+#ifdef __has_c_attribute
+# define _GL_HAS_C_ATTRIBUTE(attr) __has_c_attribute (__##attr##__)
+#else
+# define _GL_HAS_C_ATTRIBUTE(attr) 0
+#endif
+
+
+#if _GL_HAS_ATTRIBUTE (alloc_size)
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args))
+#else
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (always_inline)
+# define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__))
+#else
+# define _GL_ATTRIBUTE_ALWAYS_INLINE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (artificial)
+# define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__))
+#else
+# define _GL_ATTRIBUTE_ARTIFICIAL
+#endif
+
+/* Avoid __attribute__ ((cold)) on MinGW; see thread starting at
+   <https://lists.gnu.org/r/emacs-devel/2019-04/msg01152.html>.
+   Also, Oracle Studio 12.6 requires 'cold' not '__cold__'.  */
+#if _GL_HAS_ATTRIBUTE (cold) && !defined __MINGW32__
+# ifndef __SUNPRO_C
+#  define _GL_ATTRIBUTE_COLD __attribute__ ((__cold__))
+# else
+#  define _GL_ATTRIBUTE_COLD __attribute__ ((cold))
+# endif
+#else
+# define _GL_ATTRIBUTE_COLD
+#endif
+
+#if _GL_HAS_ATTRIBUTE (const)
+# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
+#else
+# define _GL_ATTRIBUTE_CONST
+#endif
+
+/* _GL_ATTRIBUTE_DEALLOC (F, I) is for functions returning pointers
+   that can be freed by passing them as the Ith argument to the
+   function F.  _GL_ATTRIBUTE_DEALLOC_FREE is for functions that
+   return pointers that can be freed via 'free'; it can be used
+   only after including stdlib.h.  These macros cannot be used on
+   inline functions.  */
+#if _GL_GNUC_PREREQ (11, 0)
+# define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i)))
+#else
+# define _GL_ATTRIBUTE_DEALLOC(f, i)
+#endif
+#define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (free, 1)
+
+#if _GL_HAS_C_ATTRIBUTE (deprecated)
+# define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]]
+#elif _GL_HAS_ATTRIBUTE (deprecated)
+# define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
+#else
+# define _GL_ATTRIBUTE_DEPRECATED
+#endif
+
+#if _GL_HAS_ATTRIBUTE (error)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__error__ (msg)))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__warning__ (msg)))
+#elif _GL_HAS_ATTRIBUTE (diagnose_if)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__diagnose_if__ (1, msg, "error")))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__diagnose_if__ (1, msg, "warning")))
+#else
+# define _GL_ATTRIBUTE_ERROR(msg)
+# define _GL_ATTRIBUTE_WARNING(msg)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (externally_visible)
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((externally_visible))
+#else
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
+#endif
+
+/* FALLTHROUGH is special, because it always expands to something.  */
+#if _GL_HAS_C_ATTRIBUTE (fallthrough)
+# define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]]
+#elif _GL_HAS_ATTRIBUTE (fallthrough)
+# define _GL_ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__))
+#else
+# define _GL_ATTRIBUTE_FALLTHROUGH ((void) 0)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (format)
+# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+#else
+# define _GL_ATTRIBUTE_FORMAT(spec)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (leaf)
+# define _GL_ATTRIBUTE_LEAF __attribute__ ((__leaf__))
+#else
+# define _GL_ATTRIBUTE_LEAF
+#endif
+
+#if _GL_HAS_ATTRIBUTE (malloc)
+# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
+#else
+# define _GL_ATTRIBUTE_MALLOC
+#endif
+
+/* Oracle Studio 12.6 mishandles may_alias despite __has_attribute OK.  */
+#if _GL_HAS_ATTRIBUTE (may_alias) && !defined __SUNPRO_C
+# define _GL_ATTRIBUTE_MAY_ALIAS __attribute__ ((__may_alias__))
+#else
+# define _GL_ATTRIBUTE_MAY_ALIAS
+#endif
+
+#if _GL_HAS_C_ATTRIBUTE (maybe_unused)
+# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]]
+#else
+# define _GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_UNUSED
+#endif
+/* Earlier spellings of this macro.  */
+#define _UNUSED_PARAMETER_ _GL_ATTRIBUTE_MAYBE_UNUSED
+
+#if _GL_HAS_C_ATTRIBUTE (nodiscard)
+# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]]
+#elif _GL_HAS_ATTRIBUTE (warn_unused_result)
+# define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__))
+#else
+# define _GL_ATTRIBUTE_NODISCARD
+#endif
+
+#if _GL_HAS_ATTRIBUTE (noinline)
+# define _GL_ATTRIBUTE_NOINLINE __attribute__ ((__noinline__))
+#else
+# define _GL_ATTRIBUTE_NOINLINE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (nonnull)
+# define _GL_ATTRIBUTE_NONNULL(args) __attribute__ ((__nonnull__ args))
+#else
+# define _GL_ATTRIBUTE_NONNULL(args)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (nonstring)
+# define _GL_ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__))
+#else
+# define _GL_ATTRIBUTE_NONSTRING
+#endif
+
+/* There is no _GL_ATTRIBUTE_NORETURN; use _Noreturn instead.  */
+
+#if _GL_HAS_ATTRIBUTE (nothrow) && !defined __cplusplus
+# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__))
+#else
+# define _GL_ATTRIBUTE_NOTHROW
+#endif
+
+#if _GL_HAS_ATTRIBUTE (packed)
+# define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__))
+#else
+# define _GL_ATTRIBUTE_PACKED
+#endif
+
+#if _GL_HAS_ATTRIBUTE (pure)
+# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+#else
+# define _GL_ATTRIBUTE_PURE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (returns_nonnull)
+# define _GL_ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__))
+#else
+# define _GL_ATTRIBUTE_RETURNS_NONNULL
+#endif
+
+#if _GL_HAS_ATTRIBUTE (sentinel)
+# define _GL_ATTRIBUTE_SENTINEL(pos) __attribute__ ((__sentinel__ pos))
+#else
+# define _GL_ATTRIBUTE_SENTINEL(pos)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (unused)
+# define _GL_ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#else
+# define _GL_ATTRIBUTE_UNUSED
+#endif
+/* Earlier spellings of this macro.  */
+#define _GL_UNUSED _GL_ATTRIBUTE_UNUSED
+
+
+/* To support C++ as well as C, use _GL_UNUSED_LABEL with trailing ';'.  */
+#if !defined __cplusplus || _GL_GNUC_PREREQ (4, 5)
+# define _GL_UNUSED_LABEL _GL_ATTRIBUTE_UNUSED
+#else
+# define _GL_UNUSED_LABEL
+#endif
+
+
+/* Define to empty if `const' does not conform to ANSI C. */
+#undef const
+
+/* Please see the Gnulib manual for how to use these macros.
+
+   Suppress extern inline with HP-UX cc, as it appears to be broken; see
+   <https://lists.gnu.org/r/bug-texinfo/2013-02/msg00030.html>.
+
+   Suppress extern inline with Sun C in standards-conformance mode, as it
+   mishandles inline functions that call each other.  E.g., for 'inline void f
+   (void) { } inline void g (void) { f (); }', c99 incorrectly complains
+   'reference to static identifier "f" in extern inline function'.
+   This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16.
+
+   Suppress extern inline (with or without __attribute__ ((__gnu_inline__)))
+   on configurations that mistakenly use 'static inline' to implement
+   functions or macros in standard C headers like <ctype.h>.  For example,
+   if isdigit is mistakenly implemented via a static inline function,
+   a program containing an extern inline function that calls isdigit
+   may not work since the C standard prohibits extern inline functions
+   from calling static functions (ISO C 99 section 6.7.4.(3).
+   This bug is known to occur on:
+
+     OS X 10.8 and earlier; see:
+     https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html
+
+     DragonFly; see
+     http://muscles.dragonflybsd.org/bulk/clang-master-potential/20141111_102002/logs/ah-tty-0.3.12.log
+
+     FreeBSD; see:
+     https://lists.gnu.org/r/bug-gnulib/2014-07/msg00104.html
+
+   OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and
+   for clang but remains for g++; see <https://trac.macports.org/ticket/41033>.
+   Assume DragonFly and FreeBSD will be similar.
+
+   GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+   inline semantics, unless -fgnu89-inline is used.  It defines a macro
+   __GNUC_STDC_INLINE__ to indicate this situation or a macro
+   __GNUC_GNU_INLINE__ to indicate the opposite situation.
+   GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline
+   semantics but warns, unless -fgnu89-inline is used:
+     warning: C99 inline functions are not supported; using GNU89
+     warning: to disable this warning use -fgnu89-inline or the gnu_inline function attribute
+   It defines a macro __GNUC_GNU_INLINE__ to indicate this situation.
+ */
+#if (((defined __APPLE__ && defined __MACH__) \
+      || defined __DragonFly__ || defined __FreeBSD__) \
+     && (defined __header_inline \
+         ? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \
+            && ! defined __clang__) \
+         : ((! defined _DONT_USE_CTYPE_INLINE_ \
+             && (defined __GNUC__ || defined __cplusplus)) \
+            || (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \
+                && defined __GNUC__ && ! defined __cplusplus))))
+# define _GL_EXTERN_INLINE_STDHEADER_BUG
+#endif
+#if ((__GNUC__ \
+      ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \
+      : (199901L <= __STDC_VERSION__ \
+         && !defined __HP_cc \
+         && !defined __PGI \
+         && !(defined __SUNPRO_C && __STDC__))) \
+     && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+# define _GL_INLINE inline
+# define _GL_EXTERN_INLINE extern inline
+# define _GL_EXTERN_INLINE_IN_USE
+#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \
+       && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+# if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__
+   /* __gnu_inline__ suppresses a GCC 4.2 diagnostic.  */
+#  define _GL_INLINE extern inline __attribute__ ((__gnu_inline__))
+# else
+#  define _GL_INLINE extern inline
+# endif
+# define _GL_EXTERN_INLINE extern
+# define _GL_EXTERN_INLINE_IN_USE
+#else
+# define _GL_INLINE static _GL_UNUSED
+# define _GL_EXTERN_INLINE static _GL_UNUSED
+#endif
+
+/* In GCC 4.6 (inclusive) to 5.1 (exclusive),
+   suppress bogus "no previous prototype for 'FOO'"
+   and "no previous declaration for 'FOO'" diagnostics,
+   when FOO is an inline function in the header; see
+   <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113> and
+   <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63877>.  */
+#if __GNUC__ == 4 && 6 <= __GNUC_MINOR__
+# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__
+#  define _GL_INLINE_HEADER_CONST_PRAGMA
+# else
+#  define _GL_INLINE_HEADER_CONST_PRAGMA \
+     _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"")
+# endif
+# define _GL_INLINE_HEADER_BEGIN \
+    _Pragma ("GCC diagnostic push") \
+    _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \
+    _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \
+    _GL_INLINE_HEADER_CONST_PRAGMA
+# define _GL_INLINE_HEADER_END \
+    _Pragma ("GCC diagnostic pop")
+#else
+# define _GL_INLINE_HEADER_BEGIN
+# define _GL_INLINE_HEADER_END
+#endif
+
+/* Define to the overridden function name */
+#undef fts_children
+
+/* Define to the overridden function name */
+#undef fts_close
+
+/* Define to the overridden function name */
+#undef fts_cross_check
+
+/* Define to the overridden function name */
+#undef fts_open
+
+/* Define to the overridden function name */
+#undef fts_read
+
+/* Define to the overridden function name */
+#undef fts_set
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+#undef gid_t
+
+/* A replacement for va_copy, if needed.  */
+#define gl_va_copy(a,b) ((a) = (b))
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+#undef inline
+#endif
+
+/* Define to long or long long if <stdint.h> and <inttypes.h> don't define. */
+#undef intmax_t
+
+/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports
+   the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of
+   earlier versions), but does not display it by setting __GNUC_STDC_INLINE__.
+   __APPLE__ && __MACH__ test for Mac OS X.
+   __APPLE_CC__ tests for the Apple compiler and its version.
+   __STDC_VERSION__ tests for the C99 mode.  */
+#if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__
+# define __GNUC_STDC_INLINE__ 1
+#endif
+
+/* Define to 1 if the compiler is checking for lint. */
+#undef lint
+
+/* Define to a type if <wchar.h> does not define. */
+#undef mbstate_t
+
+/* _GL_CMP (n1, n2) performs a three-valued comparison on n1 vs. n2, where
+   n1 and n2 are expressions without side effects, that evaluate to real
+   numbers (excluding NaN).
+   It returns
+     1  if n1 > n2
+     0  if n1 == n2
+     -1 if n1 < n2
+   The naïve code   (n1 > n2 ? 1 : n1 < n2 ? -1 : 0)  produces a conditional
+   jump with nearly all GCC versions up to GCC 10.
+   This variant     (n1 < n2 ? -1 : n1 > n2)  produces a conditional with many
+   GCC versions up to GCC 9.
+   The better code  (n1 > n2) - (n1 < n2)  from Hacker's Delight § 2-9
+   avoids conditional jumps in all GCC versions >= 3.4.  */
+#define _GL_CMP(n1, n2) (((n1) > (n2)) - ((n1) < (n2)))
+
+
+/* Define to `int' if <sys/types.h> does not define. */
+#undef mode_t
+
+/* Define to the type of st_nlink in struct stat, or a supertype. */
+#undef nlink_t
+
+/* Define to `long int' if <sys/types.h> does not define. */
+#undef off_t
+
+/* Define as a signed integer type capable of holding a process identifier. */
+#undef pid_t
+
+/* Define as the type of the result of subtracting two pointers, if the system
+   doesn't define it. */
+#undef ptrdiff_t
+
+/* Define to rpl_re_comp if the replacement should be used. */
+#undef re_comp
+
+/* Define to rpl_re_compile_fastmap if the replacement should be used. */
+#undef re_compile_fastmap
+
+/* Define to rpl_re_compile_pattern if the replacement should be used. */
+#undef re_compile_pattern
+
+/* Define to rpl_re_exec if the replacement should be used. */
+#undef re_exec
+
+/* Define to rpl_re_match if the replacement should be used. */
+#undef re_match
+
+/* Define to rpl_re_match_2 if the replacement should be used. */
+#undef re_match_2
+
+/* Define to rpl_re_search if the replacement should be used. */
+#undef re_search
+
+/* Define to rpl_re_search_2 if the replacement should be used. */
+#undef re_search_2
+
+/* Define to rpl_re_set_registers if the replacement should be used. */
+#undef re_set_registers
+
+/* Define to rpl_re_set_syntax if the replacement should be used. */
+#undef re_set_syntax
+
+/* Define to rpl_re_syntax_options if the replacement should be used. */
+#undef re_syntax_options
+
+/* Define to rpl_regcomp if the replacement should be used. */
+#undef regcomp
+
+/* Define to rpl_regerror if the replacement should be used. */
+#undef regerror
+
+/* Define to rpl_regexec if the replacement should be used. */
+#undef regexec
+
+/* Define to rpl_regfree if the replacement should be used. */
+#undef regfree
+
+/* Define to the equivalent of the C99 'restrict' keyword, or to
+   nothing if this is not supported.  Do not define if restrict is
+   supported only directly.  */
+#define restrict
+/* Work around a bug in older versions of Sun C++, which did not
+   #define __restrict__ or support _Restrict or __restrict__
+   even though the corresponding Sun C compiler ended up with
+   "#define restrict _Restrict" or "#define restrict __restrict__"
+   in the previous line.  This workaround can be removed once
+   we assume Oracle Developer Studio 12.5 (2016) or later.  */
+#if defined __SUNPRO_CC && !defined __RESTRICT && !defined __restrict__
+# define _Restrict
+# define __restrict__
+#endif
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+#undef size_t
+
+/* type to use in place of socklen_t if not defined */
+#undef socklen_t
+
+/* Define as a signed type of the same size as size_t. */
+#define ssize_t ptrdiff_t
+
+/* Define to 'struct sigaltstack' if that's the type of the argument to
+   sigaltstack */
+#undef stack_t
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+#undef uid_t
+
+
+  /* This definition is a duplicate of the one in unitypes.h.
+     It is here so that we can cope with an older version of unitypes.h
+     that does not contain this definition and that is pre-installed among
+     the public header files.  */
+  # if defined __restrict \
+       || 2 < __GNUC__ + (95 <= __GNUC_MINOR__) \
+       || __clang_major__ >= 3
+  #  define _UC_RESTRICT __restrict
+  # elif 199901L <= __STDC_VERSION__ || defined restrict
+  #  define _UC_RESTRICT restrict
+  # else
+  #  define _UC_RESTRICT
+  # endif
+  
+
+/* Define as a macro for copying va_list variables. */
+#undef va_copy
+
+typedef unsigned mode_t;
+
+/* Include windows.h here before DATADIR is defined, as it conflicts with objidl.h. */
+#include <windows.h>
+
+/* Hack! */
+#include <arg-nonnull.h>
+
+/* More hacks */
+#define _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD(a, b)
+
+/* S_ISXXX macros: */
+#include <sys/stat.h>
+#include <nt/ntstat.h>
+#ifndef S_ISCHR
+# define S_ISCHR(x) 0
+#endif
+#ifndef S_ISBLK
+# define S_ISBLK(x) 0
+#endif
+#ifndef S_ISSOCK
+# define S_ISSOCK(x) 0
+#endif
+#ifndef S_ISFIFO
+# define S_ISFIFO(x) 0
+#endif
+#ifndef S_TYPEISSHM
+# define S_TYPEISSHM(x) 0
+#endif
+#ifndef S_TYPEISTMO
+# define S_TYPEISTMO(x) 0
+#endif
+
+/* Missing these: */
+#define STDIN_FILENO 0
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+
+/* Missing open flags.*/
+#include <nt/ntopenat.h>
+#ifndef O_NOCTTY
+# define O_NOCTTY 0
+#endif
+#ifndef O_NOFOLLOW
+# define O_NOFOLLOW 0
+#endif
+#ifndef O_NOLINK
+# define O_NOLINK 0
+#endif
+#ifndef O_NOLINKS
+# define O_NOLINKS 0
+#endif
+#ifndef O_NOTRANS
+# define O_NOTRANS 0
+#endif
+#ifndef O_NONBLOCK
+# define O_NONBLOCK 0
+#endif
+#ifndef O_SEARCH
+# define O_SEARCH 0
+#endif
+#ifndef O_CLOEXEC
+# define O_CLOEXEC _O_NOINHERIT
+#endif
+
+/* Some prototypes of gnulib functions put here to avoid needing to mess with
+   stdlib.in.h, string.in.h and wchar.in.h since MSC has no include_next facility. */
+extern void *reallocarray(void *, size_t, size_t);
+extern int mbscasecmp(const char *, const char *);
+extern wchar_t *wmempcpy(wchar_t *, const wchar_t *, size_t);
+extern int wcwidth(wchar_t);
+
+#define strerror gl_strerror
+
+/* Override initialize_main to do wildcard expansion. */
+#define initialize_main w32_initialize_main
+void w32_initialize_main(int *pcArgs, char ***ppapszArgs);
+
+#include "get_codepage.h"
+
+#endif /* !INCLUDED_CONFIG_WIN_H */
+
diff --git a/src/grep/configure b/src/grep/configure
new file mode 100755
index 0000000..d848d49
--- /dev/null
+++ b/src/grep/configure
@@ -0,0 +1,51914 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.71 for GNU grep 3.7.
+#
+# Report bugs to <bug-grep@gnu.org>.
+#
+#
+# Copyright (C) 1992-1996, 1998-2017, 2020-2021 Free Software Foundation,
+# Inc.
+#
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+as_nop=:
+if test ${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
+then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else $as_nop
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+
+# Reset variables that may have inherited troublesome values from
+# the environment.
+
+# IFS needs to be set, to space, tab, and newline, in precisely that order.
+# (If _AS_PATH_WALK were called with IFS unset, it would have the
+# side effect of setting IFS to empty, thus disabling word splitting.)
+# Quoting is to prevent editors from complaining about space-tab.
+as_nl='
+'
+export as_nl
+IFS=" ""	$as_nl"
+
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# Ensure predictable behavior from utilities with locale-dependent output.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# We cannot yet rely on "unset" to work, but we need these variables
+# to be unset--not just set to an empty or harmless value--now, to
+# avoid bugs in old shells (e.g. pre-3.0 UWIN ksh).  This construct
+# also avoids known problems related to "unset" and subshell syntax
+# in other old shells (e.g. bash 2.01 and pdksh 5.2.14).
+for as_var in BASH_ENV ENV MAIL MAILPATH CDPATH
+do eval test \${$as_var+y} \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+
+# Ensure that fds 0, 1, and 2 are open.
+if (exec 3>&0) 2>/dev/null; then :; else exec 0</dev/null; fi
+if (exec 3>&1) 2>/dev/null; then :; else exec 1>/dev/null; fi
+if (exec 3>&2)            ; then :; else exec 2>/dev/null; fi
+
+# The user is always right.
+if ${PATH_SEPARATOR+false} :; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    test -r "$as_dir$0" && as_myself=$as_dir$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  printf "%s\n" "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+
+# Use a proper internal environment variable to ensure we don't fall
+  # into an infinite loop, continuously re-executing ourselves.
+  if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
+    _as_can_reexec=no; export _as_can_reexec;
+    # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+printf "%s\n" "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
+  fi
+  # We don't want this to propagate to other subprocesses.
+          { _as_can_reexec=; unset _as_can_reexec;}
+if test "x$CONFIG_SHELL" = x; then
+  as_bourne_compatible="as_nop=:
+if test \${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
+then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '\${1+\"\$@\"}'='\"\$@\"'
+  setopt NO_GLOB_SUBST
+else \$as_nop
+  case \`(set -o) 2>/dev/null\` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+"
+  as_required="as_fn_return () { (exit \$1); }
+as_fn_success () { as_fn_return 0; }
+as_fn_failure () { as_fn_return 1; }
+as_fn_ret_success () { return 0; }
+as_fn_ret_failure () { return 1; }
+
+exitcode=0
+as_fn_success || { exitcode=1; echo as_fn_success failed.; }
+as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
+as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
+as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
+if ( set x; as_fn_ret_success y && test x = \"\$1\" )
+then :
+
+else \$as_nop
+  exitcode=1; echo positional parameters were not saved.
+fi
+test x\$exitcode = x0 || exit 1
+blah=\$(echo \$(echo blah))
+test x\"\$blah\" = xblah || exit 1
+test -x / || exit 1"
+  as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
+  as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
+  eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
+  test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1
+test \$(( 1 + 1 )) = 2 || exit 1"
+  if (eval "$as_required") 2>/dev/null
+then :
+  as_have_required=yes
+else $as_nop
+  as_have_required=no
+fi
+  if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null
+then :
+
+else $as_nop
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+  as_found=:
+  case $as_dir in #(
+	 /*)
+	   for as_base in sh bash ksh sh5; do
+	     # Try only shells that exist, to save several forks.
+	     as_shell=$as_dir$as_base
+	     if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
+		    as_run=a "$as_shell" -c "$as_bourne_compatible""$as_required" 2>/dev/null
+then :
+  CONFIG_SHELL=$as_shell as_have_required=yes
+		   if as_run=a "$as_shell" -c "$as_bourne_compatible""$as_suggested" 2>/dev/null
+then :
+  break 2
+fi
+fi
+	   done;;
+       esac
+  as_found=false
+done
+IFS=$as_save_IFS
+if $as_found
+then :
+
+else $as_nop
+  if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+	      as_run=a "$SHELL" -c "$as_bourne_compatible""$as_required" 2>/dev/null
+then :
+  CONFIG_SHELL=$SHELL as_have_required=yes
+fi
+fi
+
+
+      if test "x$CONFIG_SHELL" != x
+then :
+  export CONFIG_SHELL
+             # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+printf "%s\n" "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
+fi
+
+    if test x$as_have_required = xno
+then :
+  printf "%s\n" "$0: This script requires a shell more modern than all"
+  printf "%s\n" "$0: the shells that I found on your system."
+  if test ${ZSH_VERSION+y} ; then
+    printf "%s\n" "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+    printf "%s\n" "$0: be upgraded to zsh 4.3.4 or later."
+  else
+    printf "%s\n" "$0: Please tell bug-autoconf@gnu.org and bug-grep@gnu.org
+$0: about your system, including any error possibly output
+$0: before this message. Then install a modern shell, or
+$0: manually run the script under such a shell if you do
+$0: have one."
+  fi
+  exit 1
+fi
+fi
+fi
+SHELL=${CONFIG_SHELL-/bin/sh}
+export SHELL
+# Unset more variables known to interfere with behavior of common tools.
+CLICOLOR_FORCE= GREP_OPTIONS=
+unset CLICOLOR_FORCE GREP_OPTIONS
+
+## --------------------- ##
+## M4sh Shell Functions. ##
+## --------------------- ##
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+# as_fn_nop
+# ---------
+# Do nothing but, unlike ":", preserve the value of $?.
+as_fn_nop ()
+{
+  return $?
+}
+as_nop=as_fn_nop
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`printf "%s\n" "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null
+then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else $as_nop
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null
+then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else $as_nop
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+# as_fn_nop
+# ---------
+# Do nothing but, unlike ":", preserve the value of $?.
+as_fn_nop ()
+{
+  return $?
+}
+as_nop=as_fn_nop
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  printf "%s\n" "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+  as_lineno_1=$LINENO as_lineno_1a=$LINENO
+  as_lineno_2=$LINENO as_lineno_2a=$LINENO
+  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
+  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
+  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)
+  sed -n '
+    p
+    /[$]LINENO/=
+  ' <$as_myself |
+    sed '
+      s/[$]LINENO.*/&-/
+      t lineno
+      b
+      :lineno
+      N
+      :loop
+      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
+      t loop
+      s/-\n.*//
+    ' >$as_me.lineno &&
+  chmod +x "$as_me.lineno" ||
+    { printf "%s\n" "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+  # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
+  # already done that, so ensure we don't try to do so again and fall
+  # in an infinite loop.  This has already happened in practice.
+  _as_can_reexec=no; export _as_can_reexec
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensitive to this).
+  . "./$as_me.lineno"
+  # Exit status is that of the last command.
+  exit
+}
+
+
+# Determine whether it's possible to make 'echo' print without a newline.
+# These variables are no longer used directly by Autoconf, but are AC_SUBSTed
+# for compatibility with existing Makefiles.
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+# For backward compatibility with old third-party macros, we provide
+# the shell variables $as_echo and $as_echo_n.  New code should use
+# AS_ECHO(["message"]) and AS_ECHO_N(["message"]), respectively.
+as_echo='printf %s\n'
+as_echo_n='printf %s'
+
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -pR'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -pR'
+  fi
+else
+  as_ln_s='cp -pR'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+test -n "$DJDIR" || exec 7<&0 </dev/null
+exec 6>&1
+
+# Name of the host.
+# hostname on some systems (SVR3.2, old GNU/Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_clean_files=
+ac_config_libobj_dir=.
+LIBOBJS=
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+
+# Identity of this package.
+PACKAGE_NAME='GNU grep'
+PACKAGE_TARNAME='grep'
+PACKAGE_VERSION='3.7'
+PACKAGE_STRING='GNU grep 3.7'
+PACKAGE_BUGREPORT='bug-grep@gnu.org'
+PACKAGE_URL='https://www.gnu.org/software/grep/'
+
+ac_unique_file="src/grep.c"
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stddef.h>
+#ifdef HAVE_STDIO_H
+# include <stdio.h>
+#endif
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_header_c_list=
+gl_use_threads_default=
+gl_use_winpthreads_default=
+ac_func_c_list=
+gl_fnmatch_required=POSIX
+gl_getopt_required=POSIX
+gt_needs=
+ac_subst_vars='gltests_LTLIBOBJS
+gltests_LIBOBJS
+gl_LTLIBOBJS
+gl_LIBOBJS
+CONFIG_INCLUDE
+am__EXEEXT_FALSE
+am__EXEEXT_TRUE
+LTLIBOBJS
+LIBOBJS
+COLORIZE_SOURCE
+USE_PCRE_FALSE
+USE_PCRE_TRUE
+PCRE_LIBS
+PCRE_CFLAGS
+USE_INCLUDED_REGEX_FALSE
+USE_INCLUDED_REGEX_TRUE
+POSUB
+INTLLIBS
+XGETTEXT_EXTRA_OPTIONS
+MSGMERGE
+XGETTEXT_015
+XGETTEXT
+GMSGFMT_015
+MSGFMT_015
+GMSGFMT
+MSGFMT
+GETTEXT_MACRO_VERSION
+USE_NLS
+GNULIB_TEST_WARN_CFLAGS
+GNULIB_WARN_CFLAGS
+WARN_CFLAGS
+WERROR_CFLAGS
+HAVE_PERL_FALSE
+HAVE_PERL_TRUE
+LIBTESTS_LIBDEPS
+LIBGREPUTILS_LTLIBDEPS
+LIBGREPUTILS_LIBDEPS
+abs_aux_dir
+HAVE_SYS_UIO_H
+NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H
+NEXT_SYS_UIO_H
+NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H
+NEXT_SYS_IOCTL_H
+HAVE_SYS_IOCTL_H
+LIB_SETLOCALE
+GL_GNULIB_SELECT
+GL_GNULIB_PSELECT
+GL_GNULIB_SCHED_YIELD
+HAVE_STRUCT_SCHED_PARAM
+HAVE_SCHED_H
+NEXT_AS_FIRST_DIRECTIVE_SCHED_H
+NEXT_SCHED_H
+REPLACE_SCHED_YIELD
+HAVE_SCHED_YIELD
+LIB_PTHREAD_SIGMASK
+GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK
+GL_GNULIB_PTHREAD_SPIN
+GL_GNULIB_PTHREAD_TSS
+GL_GNULIB_PTHREAD_COND
+GL_GNULIB_PTHREAD_RWLOCK
+GL_GNULIB_PTHREAD_MUTEX
+GL_GNULIB_PTHREAD_ONCE
+GL_GNULIB_PTHREAD_THREAD
+LIB_PTHREAD
+HAVE_PTHREAD_H
+NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H
+NEXT_PTHREAD_H
+REPLACE_PTHREAD_SPIN_DESTROY
+REPLACE_PTHREAD_SPIN_UNLOCK
+REPLACE_PTHREAD_SPIN_TRYLOCK
+REPLACE_PTHREAD_SPIN_LOCK
+REPLACE_PTHREAD_SPIN_INIT
+REPLACE_PTHREAD_KEY_DELETE
+REPLACE_PTHREAD_GETSPECIFIC
+REPLACE_PTHREAD_SETSPECIFIC
+REPLACE_PTHREAD_KEY_CREATE
+REPLACE_PTHREAD_COND_DESTROY
+REPLACE_PTHREAD_COND_BROADCAST
+REPLACE_PTHREAD_COND_SIGNAL
+REPLACE_PTHREAD_COND_TIMEDWAIT
+REPLACE_PTHREAD_COND_WAIT
+REPLACE_PTHREAD_CONDATTR_DESTROY
+REPLACE_PTHREAD_CONDATTR_INIT
+REPLACE_PTHREAD_COND_INIT
+REPLACE_PTHREAD_RWLOCK_DESTROY
+REPLACE_PTHREAD_RWLOCK_UNLOCK
+REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK
+REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK
+REPLACE_PTHREAD_RWLOCK_TRYWRLOCK
+REPLACE_PTHREAD_RWLOCK_TRYRDLOCK
+REPLACE_PTHREAD_RWLOCK_WRLOCK
+REPLACE_PTHREAD_RWLOCK_RDLOCK
+REPLACE_PTHREAD_RWLOCKATTR_DESTROY
+REPLACE_PTHREAD_RWLOCKATTR_INIT
+REPLACE_PTHREAD_RWLOCK_INIT
+REPLACE_PTHREAD_MUTEX_DESTROY
+REPLACE_PTHREAD_MUTEX_UNLOCK
+REPLACE_PTHREAD_MUTEX_TIMEDLOCK
+REPLACE_PTHREAD_MUTEX_TRYLOCK
+REPLACE_PTHREAD_MUTEX_LOCK
+REPLACE_PTHREAD_MUTEXATTR_DESTROY
+REPLACE_PTHREAD_MUTEXATTR_SETROBUST
+REPLACE_PTHREAD_MUTEXATTR_GETROBUST
+REPLACE_PTHREAD_MUTEXATTR_SETTYPE
+REPLACE_PTHREAD_MUTEXATTR_GETTYPE
+REPLACE_PTHREAD_MUTEXATTR_INIT
+REPLACE_PTHREAD_MUTEX_INIT
+REPLACE_PTHREAD_ONCE
+REPLACE_PTHREAD_EXIT
+REPLACE_PTHREAD_JOIN
+REPLACE_PTHREAD_DETACH
+REPLACE_PTHREAD_EQUAL
+REPLACE_PTHREAD_SELF
+REPLACE_PTHREAD_ATTR_DESTROY
+REPLACE_PTHREAD_ATTR_SETDETACHSTATE
+REPLACE_PTHREAD_ATTR_GETDETACHSTATE
+REPLACE_PTHREAD_ATTR_INIT
+REPLACE_PTHREAD_CREATE
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+HAVE_PTHREAD_SPIN_UNLOCK
+HAVE_PTHREAD_SPIN_TRYLOCK
+HAVE_PTHREAD_SPIN_LOCK
+HAVE_PTHREAD_SPIN_INIT
+HAVE_PTHREAD_KEY_DELETE
+HAVE_PTHREAD_GETSPECIFIC
+HAVE_PTHREAD_SETSPECIFIC
+HAVE_PTHREAD_KEY_CREATE
+HAVE_PTHREAD_COND_DESTROY
+HAVE_PTHREAD_COND_BROADCAST
+HAVE_PTHREAD_COND_SIGNAL
+HAVE_PTHREAD_COND_TIMEDWAIT
+HAVE_PTHREAD_COND_WAIT
+HAVE_PTHREAD_CONDATTR_DESTROY
+HAVE_PTHREAD_CONDATTR_INIT
+HAVE_PTHREAD_COND_INIT
+HAVE_PTHREAD_RWLOCK_DESTROY
+HAVE_PTHREAD_RWLOCK_UNLOCK
+HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK
+HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK
+HAVE_PTHREAD_RWLOCK_TRYWRLOCK
+HAVE_PTHREAD_RWLOCK_TRYRDLOCK
+HAVE_PTHREAD_RWLOCK_WRLOCK
+HAVE_PTHREAD_RWLOCK_RDLOCK
+HAVE_PTHREAD_RWLOCKATTR_DESTROY
+HAVE_PTHREAD_RWLOCKATTR_INIT
+HAVE_PTHREAD_RWLOCK_INIT
+HAVE_PTHREAD_MUTEX_DESTROY
+HAVE_PTHREAD_MUTEX_UNLOCK
+HAVE_PTHREAD_MUTEX_TIMEDLOCK
+HAVE_PTHREAD_MUTEX_TRYLOCK
+HAVE_PTHREAD_MUTEX_LOCK
+HAVE_PTHREAD_MUTEXATTR_DESTROY
+HAVE_PTHREAD_MUTEXATTR_SETROBUST
+HAVE_PTHREAD_MUTEXATTR_GETROBUST
+HAVE_PTHREAD_MUTEXATTR_SETTYPE
+HAVE_PTHREAD_MUTEXATTR_GETTYPE
+HAVE_PTHREAD_MUTEXATTR_INIT
+HAVE_PTHREAD_MUTEX_INIT
+HAVE_PTHREAD_ONCE
+HAVE_PTHREAD_EXIT
+HAVE_PTHREAD_JOIN
+HAVE_PTHREAD_DETACH
+HAVE_PTHREAD_EQUAL
+HAVE_PTHREAD_SELF
+HAVE_PTHREAD_ATTR_DESTROY
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+HAVE_PTHREAD_ATTR_GETDETACHSTATE
+HAVE_PTHREAD_ATTR_INIT
+HAVE_PTHREAD_CREATE
+HAVE_PTHREAD_PROCESS_SHARED
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+HAVE_PTHREAD_MUTEX_RECURSIVE
+HAVE_PTHREAD_CREATE_DETACHED
+HAVE_PTHREAD_SPINLOCK_T
+HAVE_PTHREAD_T
+GL_GENERATE_NETINET_IN_H_FALSE
+GL_GENERATE_NETINET_IN_H_TRUE
+NETINET_IN_H
+HAVE_NETINET_IN_H
+NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H
+NEXT_NETINET_IN_H
+LIB_NANOSLEEP
+LIB_SELECT
+LIBSOCKET
+HAVE_SYS_SELECT_H
+NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H
+NEXT_SYS_SELECT_H
+REPLACE_SELECT
+REPLACE_PSELECT
+HAVE_PSELECT
+INTL_MACOSX_LIBS
+GL_GNULIB_IOCTL
+INET_PTON_LIB
+GL_GNULIB_GETTIMEOFDAY
+NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H
+NEXT_SYS_TIME_H
+REPLACE_STRUCT_TIMEVAL
+REPLACE_GETTIMEOFDAY
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+HAVE_STRUCT_TIMEVAL
+HAVE_GETTIMEOFDAY
+REPLACE_ITOLD
+GL_GENERATE_FLOAT_H_FALSE
+GL_GENERATE_FLOAT_H_TRUE
+FLOAT_H
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+NEXT_FLOAT_H
+LOCALE_TR_UTF8
+GL_GNULIB_INET_PTON
+GL_GNULIB_INET_NTOP
+NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H
+NEXT_ARPA_INET_H
+HAVE_ARPA_INET_H
+REPLACE_INET_PTON
+REPLACE_INET_NTOP
+HAVE_DECL_INET_PTON
+HAVE_DECL_INET_NTOP
+GL_GNULIB_ACCEPT4
+GL_GNULIB_SHUTDOWN
+GL_GNULIB_SETSOCKOPT
+GL_GNULIB_SENDTO
+GL_GNULIB_RECVFROM
+GL_GNULIB_SEND
+GL_GNULIB_RECV
+GL_GNULIB_LISTEN
+GL_GNULIB_GETSOCKOPT
+GL_GNULIB_GETSOCKNAME
+GL_GNULIB_GETPEERNAME
+GL_GNULIB_BIND
+GL_GNULIB_ACCEPT
+GL_GNULIB_CONNECT
+GL_GNULIB_SOCKET
+HAVE_WS2TCPIP_H
+HAVE_SYS_SOCKET_H
+NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H
+NEXT_SYS_SOCKET_H
+HAVE_ACCEPT4
+HAVE_SA_FAMILY_T
+HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY
+HAVE_STRUCT_SOCKADDR_STORAGE
+gltests_WITNESS
+GL_CXXFLAG_ALLOW_WARNINGS
+GL_CFLAG_ALLOW_WARNINGS
+HAVE_FEATURES_H
+NEXT_AS_FIRST_DIRECTIVE_WCHAR_H
+NEXT_WCHAR_H
+LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH_FALSE
+LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH_TRUE
+LIBUNISTRING_UNIWIDTH_H
+LIBUNISTRING_UNITYPES_H
+LIBUNISTRING_COMPILE_UNISTR_U8_UCTOMB_FALSE
+LIBUNISTRING_COMPILE_UNISTR_U8_UCTOMB_TRUE
+LIBUNISTRING_COMPILE_UNISTR_U8_MBTOUCR_FALSE
+LIBUNISTRING_COMPILE_UNISTR_U8_MBTOUCR_TRUE
+LIBUNISTRING_UNISTR_H
+HAVE_UNISTD_H
+NEXT_AS_FIRST_DIRECTIVE_UNISTD_H
+NEXT_UNISTD_H
+GL_GNULIB_MDA_TZSET
+GL_GNULIB_TZSET
+GL_GNULIB_TIME_RZ
+GL_GNULIB_TIME_R
+GL_GNULIB_TIMESPEC_GET
+GL_GNULIB_TIMEGM
+GL_GNULIB_STRPTIME
+GL_GNULIB_STRFTIME
+GL_GNULIB_NANOSLEEP
+GL_GNULIB_LOCALTIME
+GL_GNULIB_MKTIME
+GL_GNULIB_CTIME
+TIME_H_DEFINES_TIME_UTC
+UNISTD_H_DEFINES_STRUCT_TIMESPEC
+PTHREAD_H_DEFINES_STRUCT_TIMESPEC
+SYS_TIME_H_DEFINES_STRUCT_TIMESPEC
+TIME_H_DEFINES_STRUCT_TIMESPEC
+NEXT_AS_FIRST_DIRECTIVE_TIME_H
+NEXT_TIME_H
+REPLACE_LOCALTIME
+REPLACE_GMTIME
+GNULIB_GETTIMEOFDAY
+REPLACE_TZSET
+REPLACE_TIMEGM
+REPLACE_STRFTIME
+REPLACE_NANOSLEEP
+REPLACE_MKTIME
+REPLACE_LOCALTIME_R
+REPLACE_CTIME
+HAVE_TIMEZONE_T
+HAVE_TIMESPEC_GET
+HAVE_TIMEGM
+HAVE_STRPTIME
+HAVE_NANOSLEEP
+HAVE_DECL_LOCALTIME_R
+NEXT_AS_FIRST_DIRECTIVE_STRING_H
+NEXT_STRING_H
+NEXT_AS_FIRST_DIRECTIVE_STDLIB_H
+NEXT_STDLIB_H
+NEXT_AS_FIRST_DIRECTIVE_STDIO_H
+NEXT_STDIO_H
+HAVE__BOOL
+GL_GENERATE_STDBOOL_H_FALSE
+GL_GENERATE_STDBOOL_H_TRUE
+STDBOOL_H
+GL_GENERATE_STDARG_H_FALSE
+GL_GENERATE_STDARG_H_TRUE
+STDARG_H
+NEXT_AS_FIRST_DIRECTIVE_STDARG_H
+NEXT_STDARG_H
+GL_GENERATE_STDALIGN_H_FALSE
+GL_GENERATE_STDALIGN_H_TRUE
+STDALIGN_H
+GL_GENERATE_SIGSEGV_H_FALSE
+GL_GENERATE_SIGSEGV_H_TRUE
+SIGSEGV_H
+LIBSIGSEGV_PREFIX
+LTLIBSIGSEGV
+LIBSIGSEGV
+HAVE_LIBSIGSEGV
+NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H
+NEXT_SIGNAL_H
+GL_GNULIB_SIGACTION
+GL_GNULIB_SIGPROCMASK
+GL_GNULIB_SIGNAL_H_SIGPIPE
+GL_GNULIB_RAISE
+GL_GNULIB_PTHREAD_SIGMASK
+REPLACE_RAISE
+REPLACE_PTHREAD_SIGMASK
+HAVE_SIGHANDLER_T
+HAVE_TYPE_VOLATILE_SIG_ATOMIC_T
+HAVE_STRUCT_SIGACTION_SA_SIGACTION
+HAVE_SIGACTION
+HAVE_SIGINFO_T
+HAVE_SIGSET_T
+HAVE_RAISE
+HAVE_PTHREAD_SIGMASK
+HAVE_POSIX_SIGNALBLOCKING
+PERL
+LIB_NL_LANGINFO
+UNDEFINE_STRTOK_R
+REPLACE_STRSIGNAL
+REPLACE_STRERRORNAME_NP
+REPLACE_STRERROR_R
+REPLACE_STRERROR
+REPLACE_STRTOK_R
+REPLACE_STRCASESTR
+REPLACE_STRSTR
+REPLACE_STRNLEN
+REPLACE_STRNDUP
+REPLACE_STRNCAT
+REPLACE_STRDUP
+REPLACE_STRCHRNUL
+REPLACE_STPNCPY
+REPLACE_MEMMEM
+REPLACE_MEMCHR
+REPLACE_FFSLL
+HAVE_STRVERSCMP
+HAVE_DECL_STRSIGNAL
+HAVE_SIGDESCR_NP
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+GL_GNULIB_STRERROR
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+GL_GNULIB_MEMRCHR
+GL_GNULIB_MEMPCPY
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+GL_GNULIB_MEMCHR
+GL_GNULIB_FFSLL
+GL_GNULIB_FFSL
+GL_GNULIB_EXPLICIT_BZERO
+HAVE_VISIBILITY
+CFLAG_VISIBILITY
+LIB_MBRTOWC
+SED
+WINDOWS_STAT_INODES
+WINDOWS_64_BIT_OFF_T
+NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H
+NEXT_SYS_TYPES_H
+LTLIBMULTITHREAD
+LIBMULTITHREAD
+LTLIBTHREAD
+LIBTHREAD
+LIBSTDTHREAD
+GL_GNULIB_LOCALENAME
+GL_GNULIB_DUPLOCALE
+GL_GNULIB_SETLOCALE_NULL
+GL_GNULIB_SETLOCALE
+GL_GNULIB_LOCALECONV
+NEXT_AS_FIRST_DIRECTIVE_LOCALE_H
+NEXT_LOCALE_H
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+NEXT_STDDEF_H
+GL_GENERATE_STDDEF_H_FALSE
+GL_GENERATE_STDDEF_H_TRUE
+STDDEF_H
+HAVE_WCHAR_T
+HAVE_MAX_ALIGN_T
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+REPLACE_STRUCT_LCONV
+REPLACE_FREELOCALE
+REPLACE_DUPLOCALE
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+REPLACE_SETLOCALE
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+LOCALCHARSET_TESTS_ENVIRONMENT
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+HAVE_LANGINFO_H
+NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H
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+GL_GNULIB_WCTYPE
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+GL_GNULIB_ISWDIGIT
+GL_GNULIB_ISWBLANK
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+NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H
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+UINT64_MAX_EQ_ULONG_MAX
+UINT32_MAX_LT_UINTMAX_MAX
+PRIPTR_PREFIX
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+INT32_MAX_LT_INTMAX_MAX
+REPLACE_STRTOUMAX
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+HAVE_IMAXDIV_T
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+HAVE_DECL_STRTOIMAX
+HAVE_DECL_IMAXDIV
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+BITSIZEOF_PTRDIFF_T
+APPLE_UNIVERSAL_BUILD
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+HAVE_INTTYPES_H
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+GNULIBHEADERS_OVERRIDE_WINT_T
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+GL_GENERATE_LIMITS_H_TRUE
+LIMITS_H
+NEXT_AS_FIRST_DIRECTIVE_LIMITS_H
+NEXT_LIMITS_H
+NEXT_AS_FIRST_DIRECTIVE_ICONV_H
+NEXT_ICONV_H
+GL_GNULIB_ICONV
+GL_GENERATE_ICONV_H_FALSE
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+ICONV_H
+REPLACE_ICONV_UTF
+REPLACE_ICONV_OPEN
+REPLACE_ICONV
+ICONV_CONST
+LTLIBICONV
+LIBICONV
+HOST_CPU_C_ABI
+HOST_CPU
+LIB_HARD_LOCALE
+LIB_SETLOCALE_NULL
+LIB_SCHED_YIELD
+LIBPMULTITHREAD
+LIBPTHREAD
+LTLIBINTL
+LIBINTL
+GETOPT_CDEFS_H
+GETOPT_H
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+NEXT_AS_FIRST_DIRECTIVE_GETOPT_H
+NEXT_GETOPT_H
+GL_GNULIB_MDA_UMASK
+GL_GNULIB_MDA_MKDIR
+GL_GNULIB_MDA_CHMOD
+GL_GNULIB_OVERRIDES_STRUCT_STAT
+GL_GNULIB_UTIMENSAT
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+GL_GNULIB_MKNODAT
+GL_GNULIB_MKNOD
+GL_GNULIB_MKFIFOAT
+GL_GNULIB_MKFIFO
+GL_GNULIB_MKDIRAT
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+GL_GNULIB_LSTAT
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+GL_GNULIB_GETUMASK
+GL_GNULIB_FUTIMENS
+GL_GNULIB_FSTATAT
+GL_GNULIB_FSTAT
+GL_GNULIB_FCHMODAT
+WINDOWS_64_BIT_ST_SIZE
+WINDOWS_STAT_TIMESPEC
+NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H
+NEXT_SYS_STAT_H
+REPLACE_UTIMENSAT
+REPLACE_STAT
+REPLACE_MKNODAT
+REPLACE_MKNOD
+REPLACE_MKFIFOAT
+REPLACE_MKFIFO
+REPLACE_MKDIR
+REPLACE_LSTAT
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+REPLACE_FSTATAT
+REPLACE_FSTAT
+REPLACE_FCHMODAT
+HAVE_UTIMENSAT
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+HAVE_MKNOD
+HAVE_MKFIFOAT
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+GL_GNULIB_MDA_PUTW
+GL_GNULIB_MDA_GETW
+GL_GNULIB_MDA_FILENO
+GL_GNULIB_MDA_FDOPEN
+GL_GNULIB_MDA_FCLOSEALL
+GL_GNULIB_VSPRINTF_POSIX
+GL_GNULIB_VSNPRINTF
+GL_GNULIB_VPRINTF_POSIX
+GL_GNULIB_VPRINTF
+GL_GNULIB_VFPRINTF_POSIX
+GL_GNULIB_VFPRINTF
+GL_GNULIB_VDPRINTF
+GL_GNULIB_VSCANF
+GL_GNULIB_VFSCANF
+GL_GNULIB_VASPRINTF
+GL_GNULIB_TMPFILE
+GL_GNULIB_STDIO_H_SIGPIPE
+GL_GNULIB_STDIO_H_NONBLOCKING
+GL_GNULIB_SPRINTF_POSIX
+GL_GNULIB_SNPRINTF
+GL_GNULIB_SCANF
+GL_GNULIB_RENAMEAT
+GL_GNULIB_RENAME
+GL_GNULIB_REMOVE
+GL_GNULIB_PUTS
+GL_GNULIB_PUTCHAR
+GL_GNULIB_PUTC
+GL_GNULIB_PRINTF_POSIX
+GL_GNULIB_PRINTF
+GL_GNULIB_POPEN
+GL_GNULIB_PERROR
+GL_GNULIB_PCLOSE
+GL_GNULIB_OBSTACK_PRINTF_POSIX
+GL_GNULIB_OBSTACK_PRINTF
+GL_GNULIB_GETLINE
+GL_GNULIB_GETDELIM
+GL_GNULIB_GETCHAR
+GL_GNULIB_GETC
+GL_GNULIB_FWRITE
+GL_GNULIB_FTELLO
+GL_GNULIB_FTELL
+GL_GNULIB_FSEEKO
+GL_GNULIB_FSEEK
+GL_GNULIB_FSCANF
+GL_GNULIB_FREOPEN
+GL_GNULIB_FREAD
+GL_GNULIB_FPUTS
+GL_GNULIB_FPUTC
+GL_GNULIB_FPURGE
+GL_GNULIB_FPRINTF_POSIX
+GL_GNULIB_FPRINTF
+GL_GNULIB_FOPEN
+GL_GNULIB_FGETS
+GL_GNULIB_FGETC
+GL_GNULIB_FFLUSH
+GL_GNULIB_FDOPEN
+GL_GNULIB_FCLOSE
+GL_GNULIB_DPRINTF
+REPLACE_VSPRINTF
+REPLACE_VSNPRINTF
+REPLACE_VPRINTF
+REPLACE_VFPRINTF
+REPLACE_VDPRINTF
+REPLACE_VASPRINTF
+REPLACE_TMPFILE
+REPLACE_STDIO_WRITE_FUNCS
+REPLACE_STDIO_READ_FUNCS
+REPLACE_SPRINTF
+REPLACE_SNPRINTF
+REPLACE_RENAMEAT
+REPLACE_RENAME
+REPLACE_REMOVE
+REPLACE_PRINTF
+REPLACE_POPEN
+REPLACE_PERROR
+REPLACE_OBSTACK_PRINTF
+REPLACE_GETLINE
+REPLACE_GETDELIM
+REPLACE_FTELLO
+REPLACE_FTELL
+REPLACE_FSEEKO
+REPLACE_FSEEK
+REPLACE_FREOPEN
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+REPLACE_FPRINTF
+REPLACE_FOPEN
+REPLACE_FFLUSH
+REPLACE_FDOPEN
+REPLACE_FCLOSE
+REPLACE_DPRINTF
+HAVE_VDPRINTF
+HAVE_VASPRINTF
+HAVE_RENAMEAT
+HAVE_POPEN
+HAVE_PCLOSE
+HAVE_FTELLO
+HAVE_FSEEKO
+HAVE_DPRINTF
+HAVE_DECL_VSNPRINTF
+HAVE_DECL_SNPRINTF
+HAVE_DECL_OBSTACK_PRINTF
+HAVE_DECL_GETLINE
+HAVE_DECL_GETDELIM
+HAVE_DECL_FTELLO
+HAVE_DECL_FSEEKO
+HAVE_DECL_FPURGE
+HAVE_DECL_FCLOSEALL
+GL_GNULIB_FNMATCH
+GL_GENERATE_FNMATCH_H_FALSE
+GL_GENERATE_FNMATCH_H_TRUE
+FNMATCH_H
+HAVE_FNMATCH_H
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+NEXT_FNMATCH_H
+REPLACE_FNMATCH
+HAVE_FNMATCH
+NEXT_AS_FIRST_DIRECTIVE_FCNTL_H
+NEXT_FCNTL_H
+GL_GNULIB_MDA_OPEN
+GL_GNULIB_MDA_CREAT
+GL_GNULIB_OPENAT
+GL_GNULIB_OPEN
+GL_GNULIB_NONBLOCKING
+GL_GNULIB_FCNTL
+GL_GNULIB_CREAT
+REPLACE_OPENAT
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+HAVE_OPENAT
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+EOVERFLOW_HIDDEN
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+EMULTIHOP_VALUE
+EMULTIHOP_HIDDEN
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+GL_GENERATE_ERRNO_H_TRUE
+ERRNO_H
+NEXT_AS_FIRST_DIRECTIVE_ERRNO_H
+NEXT_ERRNO_H
+HAVE_DIRENT_H
+NEXT_AS_FIRST_DIRECTIVE_DIRENT_H
+NEXT_DIRENT_H
+GL_GNULIB_ISBLANK
+NEXT_AS_FIRST_DIRECTIVE_CTYPE_H
+NEXT_CTYPE_H
+PRAGMA_COLUMNS
+PRAGMA_SYSTEM_HEADER
+INCLUDE_NEXT_AS_FIRST_DIRECTIVE
+INCLUDE_NEXT
+HAVE_ISBLANK
+pkglibexecdir
+lispdir
+GL_GNULIB_ALPHASORT
+GL_GNULIB_SCANDIR
+GL_GNULIB_FDOPENDIR
+GL_GNULIB_DIRFD
+GL_GNULIB_CLOSEDIR
+GL_GNULIB_REWINDDIR
+GL_GNULIB_READDIR
+GL_GNULIB_OPENDIR
+REPLACE_FDOPENDIR
+REPLACE_DIRFD
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+REPLACE_OPENDIR
+HAVE_ALPHASORT
+HAVE_SCANDIR
+HAVE_FDOPENDIR
+HAVE_DECL_FDOPENDIR
+HAVE_DECL_DIRFD
+HAVE_CLOSEDIR
+HAVE_REWINDDIR
+HAVE_READDIR
+HAVE_OPENDIR
+HAVE_WINSOCK2_H
+REPLACE_IOCTL
+SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS
+SYS_IOCTL_H_HAVE_WINSOCK2_H
+HAVE_MSVC_INVALID_PARAMETER_HANDLER
+UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS
+UNISTD_H_HAVE_WINSOCK2_H
+UNISTD_H_HAVE_SYS_RANDOM_H
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+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localedir | --localedir | --localedi | --localed | --locale)
+    ac_prev=localedir ;;
+  -localedir=* | --localedir=* | --localedi=* | --localed=* | --locale=*)
+    localedir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst | --locals)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* | --locals=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -pdfdir | --pdfdir | --pdfdi | --pdfd | --pdf | --pd)
+    ac_prev=pdfdir ;;
+  -pdfdir=* | --pdfdir=* | --pdfdi=* | --pdfd=* | --pdf=* | --pd=*)
+    pdfdir=$ac_optarg ;;
+
+  -psdir | --psdir | --psdi | --psd | --ps)
+    ac_prev=psdir ;;
+  -psdir=* | --psdir=* | --psdi=* | --psd=* | --ps=*)
+    psdir=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -runstatedir | --runstatedir | --runstatedi | --runstated \
+  | --runstate | --runstat | --runsta | --runst | --runs \
+  | --run | --ru | --r)
+    ac_prev=runstatedir ;;
+  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
+  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
+  | --run=* | --ru=* | --r=*)
+    runstatedir=$ac_optarg ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: \`$ac_useropt'"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--with-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=\$ac_optarg ;;
+
+  -without-* | --without-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: \`$ac_useropt'"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--without-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=no ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries=$ac_optarg ;;
+
+  -*) as_fn_error $? "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information"
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    case $ac_envvar in #(
+      '' | [0-9]* | *[!_$as_cr_alnum]* )
+      as_fn_error $? "invalid variable name: \`$ac_envvar'" ;;
+    esac
+    eval $ac_envvar=\$ac_optarg
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    printf "%s\n" "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      printf "%s\n" "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  as_fn_error $? "missing argument to $ac_option"
+fi
+
+if test -n "$ac_unrecognized_opts"; then
+  case $enable_option_checking in
+    no) ;;
+    fatal) as_fn_error $? "unrecognized options: $ac_unrecognized_opts" ;;
+    *)     printf "%s\n" "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
+  esac
+fi
+
+# Check all directory arguments for consistency.
+for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
+		datadir sysconfdir sharedstatedir localstatedir includedir \
+		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
+		libdir localedir mandir runstatedir
+do
+  eval ac_val=\$$ac_var
+  # Remove trailing slashes.
+  case $ac_val in
+    */ )
+      ac_val=`expr "X$ac_val" : 'X\(.*[^/]\)' \| "X$ac_val" : 'X\(.*\)'`
+      eval $ac_var=\$ac_val;;
+  esac
+  # Be sure to have absolute directory names.
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* )  continue;;
+    NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
+  esac
+  as_fn_error $? "expected an absolute directory name for --$ac_var: $ac_val"
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+ac_pwd=`pwd` && test -n "$ac_pwd" &&
+ac_ls_di=`ls -di .` &&
+ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
+  as_fn_error $? "working directory cannot be determined"
+test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
+  as_fn_error $? "pwd does not report name of working directory"
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then the parent directory.
+  ac_confdir=`$as_dirname -- "$as_myself" ||
+$as_expr X"$as_myself" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_myself" : 'X\(//\)[^/]' \| \
+	 X"$as_myself" : 'X\(//\)$' \| \
+	 X"$as_myself" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X"$as_myself" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r "$srcdir/$ac_unique_file"; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r "$srcdir/$ac_unique_file"; then
+  test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
+  as_fn_error $? "cannot find sources ($ac_unique_file) in $srcdir"
+fi
+ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
+ac_abs_confdir=`(
+	cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error $? "$ac_msg"
+	pwd)`
+# When building in place, set srcdir=.
+if test "$ac_abs_confdir" = "$ac_pwd"; then
+  srcdir=.
+fi
+# Remove unnecessary trailing slashes from srcdir.
+# Double slashes in file names in object file debugging info
+# mess up M-x gdb in Emacs.
+case $srcdir in
+*/) srcdir=`expr "X$srcdir" : 'X\(.*[^/]\)' \| "X$srcdir" : 'X\(.*\)'`;;
+esac
+for ac_var in $ac_precious_vars; do
+  eval ac_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_env_${ac_var}_value=\$${ac_var}
+  eval ac_cv_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_cv_env_${ac_var}_value=\$${ac_var}
+done
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures GNU grep 3.7 to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking ...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR            user executables [EPREFIX/bin]
+  --sbindir=DIR           system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR        program executables [EPREFIX/libexec]
+  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
+  --libdir=DIR            object code libraries [EPREFIX/lib]
+  --includedir=DIR        C header files [PREFIX/include]
+  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
+  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
+  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
+  --infodir=DIR           info documentation [DATAROOTDIR/info]
+  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
+  --mandir=DIR            man documentation [DATAROOTDIR/man]
+  --docdir=DIR            documentation root [DATAROOTDIR/doc/grep]
+  --htmldir=DIR           html documentation [DOCDIR]
+  --dvidir=DIR            dvi documentation [DOCDIR]
+  --pdfdir=DIR            pdf documentation [DOCDIR]
+  --psdir=DIR             ps documentation [DOCDIR]
+_ACEOF
+
+  cat <<\_ACEOF
+
+Program names:
+  --program-prefix=PREFIX            prepend PREFIX to installed program names
+  --program-suffix=SUFFIX            append SUFFIX to installed program names
+  --program-transform-name=PROGRAM   run sed PROGRAM on installed program names
+
+System types:
+  --build=BUILD     configure for building on BUILD [guessed]
+  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+  case $ac_init_help in
+     short | recursive ) echo "Configuration of GNU grep 3.7:";;
+   esac
+  cat <<\_ACEOF
+
+Optional Features:
+  --disable-option-checking  ignore unrecognized --enable/--with options
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --enable-silent-rules   less verbose build output (undo: "make V=1")
+  --disable-silent-rules  verbose build output (undo: "make V=0")
+  --enable-dependency-tracking
+                          do not reject slow dependency extractors
+  --disable-dependency-tracking
+                          speeds up one-time build
+  --disable-largefile     omit support for large files
+  --disable-year2038      omit support for timestamps past the year 2038
+  --enable-threads={isoc|posix|isoc+posix|windows}
+                          specify multithreading API
+  --disable-threads       build without multithread safety
+  --enable-cross-guesses={conservative|risky}
+                          specify policy for cross-compilation guesses
+  --disable-assert        turn off assertions
+  --disable-rpath         do not hardcode runtime library paths
+  --enable-gcc-warnings   turn on lots of GCC warnings (for developers)
+  --disable-nls           do not use Native Language Support
+  --disable-perl-regexp   disable perl-regexp (pcre) support
+
+Optional Packages:
+  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
+  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
+  --with-libiconv-prefix[=DIR]  search for libiconv in DIR/include and DIR/lib
+  --without-libiconv-prefix     don't search for libiconv in includedir and libdir
+  --without-included-regex
+                          don't compile regex; this is the default on systems
+                          with recent-enough versions of the GNU C Library
+                          (use with caution on other systems).
+  --with-libsigsegv       use the GNU libsigsegv library, when present,
+                          instead of the gnulib module 'sigsegv'
+  --with-libsigsegv-prefix[=DIR]  search for libsigsegv in DIR/include and DIR/lib
+  --without-libsigsegv-prefix     don't search for libsigsegv in includedir and libdir
+  --with-packager         String identifying the packager of this software
+  --with-packager-version Packager-specific version information
+  --with-packager-bug-reports
+                          Packager info for bug reports (URL/e-mail/...)
+  --with-libintl-prefix[=DIR]  search for libintl in DIR/include and DIR/lib
+  --without-libintl-prefix     don't search for libintl in includedir and libdir
+
+Some influential environment variables:
+  CC          C compiler command
+  CFLAGS      C compiler flags
+  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
+              nonstandard directory <lib dir>
+  LIBS        libraries to pass to the linker, e.g. -l<library>
+  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
+              you have headers in a nonstandard directory <include dir>
+  CPP         C preprocessor
+  PKG_CONFIG  path to pkg-config utility
+  PKG_CONFIG_PATH
+              directories to add to pkg-config's search path
+  PKG_CONFIG_LIBDIR
+              path overriding pkg-config's built-in search path
+  PCRE_CFLAGS C compiler flags for PCRE, overriding pkg-config
+  PCRE_LIBS   linker flags for PCRE, overriding pkg-config
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+Report bugs to <bug-grep@gnu.org>.
+GNU grep home page: <https://www.gnu.org/software/grep/>.
+General help using GNU software: <https://www.gnu.org/gethelp/>.
+_ACEOF
+ac_status=$?
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d "$ac_dir" ||
+      { cd "$srcdir" && ac_pwd=`pwd` && srcdir=. && test -d "$ac_dir"; } ||
+      continue
+    ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`printf "%s\n" "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`printf "%s\n" "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+    cd "$ac_dir" || { ac_status=$?; continue; }
+    # Check for configure.gnu first; this name is used for a wrapper for
+    # Metaconfig's "Configure" on case-insensitive file systems.
+    if test -f "$ac_srcdir/configure.gnu"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure.gnu" --help=recursive
+    elif test -f "$ac_srcdir/configure"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure" --help=recursive
+    else
+      printf "%s\n" "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi || ac_status=$?
+    cd "$ac_pwd" || { ac_status=$?; break; }
+  done
+fi
+
+test -n "$ac_init_help" && exit $ac_status
+if $ac_init_version; then
+  cat <<\_ACEOF
+GNU grep configure 3.7
+generated by GNU Autoconf 2.71
+
+Copyright (C) 2021 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit
+fi
+
+## ------------------------ ##
+## Autoconf initialization. ##
+## ------------------------ ##
+
+# ac_fn_c_try_compile LINENO
+# --------------------------
+# Try to compile conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest.beam
+  if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext
+then :
+  ac_retval=0
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_compile
+
+# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists and can be compiled using the include files in
+# INCLUDES, setting the cache variable VAR accordingly.
+ac_fn_c_check_header_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+printf %s "checking for $2... " >&6; }
+if eval test \${$3+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  eval "$3=yes"
+else $as_nop
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_header_compile
+
+# ac_fn_c_try_cpp LINENO
+# ----------------------
+# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_cpp ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } > conftest.i && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }
+then :
+  ac_retval=0
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+    ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_cpp
+
+# ac_fn_c_check_type LINENO TYPE VAR INCLUDES
+# -------------------------------------------
+# Tests whether TYPE exists after having included INCLUDES, setting cache
+# variable VAR accordingly.
+ac_fn_c_check_type ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+printf %s "checking for $2... " >&6; }
+if eval test \${$3+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  eval "$3=no"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+if (sizeof ($2))
+	 return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+if (sizeof (($2)))
+	    return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+else $as_nop
+  eval "$3=yes"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_type
+
+# ac_fn_c_try_link LINENO
+# -----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_link ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest.beam conftest$ac_exeext
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext && {
+	 test "$cross_compiling" = yes ||
+	 test -x conftest$ac_exeext
+       }
+then :
+  ac_retval=0
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
+  # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
+  # interfere with the next link command; also delete a directory that is
+  # left behind by Apple's compiler.  We do this before executing the actions.
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_link
+
+# ac_fn_c_try_run LINENO
+# ----------------------
+# Try to run conftest.$ac_ext, and return whether this succeeded. Assumes that
+# executables *can* be run.
+ac_fn_c_try_run ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }
+then :
+  ac_retval=0
+else $as_nop
+  printf "%s\n" "$as_me: program exited with status $ac_status" >&5
+       printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+       ac_retval=$ac_status
+fi
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_run
+
+# ac_fn_c_check_func LINENO FUNC VAR
+# ----------------------------------
+# Tests whether FUNC exists, setting the cache variable VAR accordingly
+ac_fn_c_check_func ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+printf %s "checking for $2... " >&6; }
+if eval test \${$3+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $2 innocuous_$2
+
+/* System header to define __stub macros and hopefully few prototypes,
+   which can conflict with char $2 (); below.  */
+
+#include <limits.h>
+#undef $2
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char $2 ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined __stub_$2 || defined __stub___$2
+choke me
+#endif
+
+int
+main (void)
+{
+return $2 ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  eval "$3=yes"
+else $as_nop
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_func
+
+# ac_fn_check_decl LINENO SYMBOL VAR INCLUDES EXTRA-OPTIONS FLAG-VAR
+# ------------------------------------------------------------------
+# Tests whether SYMBOL is declared in INCLUDES, setting cache variable VAR
+# accordingly. Pass EXTRA-OPTIONS to the compiler, using FLAG-VAR.
+ac_fn_check_decl ()
+{
+  ac_save_ac_compile="$ac_compile"
+  if test -n "$ac_compile_for_check_decl"; then
+    ac_compile="$ac_compile_for_check_decl"
+  fi
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  as_decl_name=`echo $2|sed 's/ *(.*//'`
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5
+printf %s "checking whether $as_decl_name is declared... " >&6; }
+if eval test \${$3+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`
+  eval ac_save_FLAGS=\$$6
+  as_fn_append $6 " $5"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+#ifndef $as_decl_name
+#ifdef __cplusplus
+  (void) $as_decl_use;
+#else
+  (void) $as_decl_name;
+#endif
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  eval "$3=yes"
+else $as_nop
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  eval $6=\$ac_save_FLAGS
+
+fi
+eval ac_res=\$$3
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  ac_compile="$ac_save_ac_compile"
+
+} # ac_fn_check_decl
+
+# ac_fn_c_compute_int LINENO EXPR VAR INCLUDES
+# --------------------------------------------
+# Tries to find the compile-time value of EXPR in a program that includes
+# INCLUDES, setting VAR accordingly. Returns whether the value could be
+# computed
+ac_fn_c_compute_int ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if test "$cross_compiling" = yes; then
+    # Depending upon the size, compute the lo and hi bounds.
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+static int test_array [1 - 2 * !(($2) >= 0)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_lo=0 ac_mid=0
+  while :; do
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+static int test_array [1 - 2 * !(($2) <= $ac_mid)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_hi=$ac_mid; break
+else $as_nop
+  as_fn_arith $ac_mid + 1 && ac_lo=$as_val
+			if test $ac_lo -le $ac_mid; then
+			  ac_lo= ac_hi=
+			  break
+			fi
+			as_fn_arith 2 '*' $ac_mid + 1 && ac_mid=$as_val
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  done
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+static int test_array [1 - 2 * !(($2) < 0)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_hi=-1 ac_mid=-1
+  while :; do
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+static int test_array [1 - 2 * !(($2) >= $ac_mid)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_lo=$ac_mid; break
+else $as_nop
+  as_fn_arith '(' $ac_mid ')' - 1 && ac_hi=$as_val
+			if test $ac_mid -le $ac_hi; then
+			  ac_lo= ac_hi=
+			  break
+			fi
+			as_fn_arith 2 '*' $ac_mid && ac_mid=$as_val
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  done
+else $as_nop
+  ac_lo= ac_hi=
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+# Binary search between lo and hi bounds.
+while test "x$ac_lo" != "x$ac_hi"; do
+  as_fn_arith '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo && ac_mid=$as_val
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+static int test_array [1 - 2 * !(($2) <= $ac_mid)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_hi=$ac_mid
+else $as_nop
+  as_fn_arith '(' $ac_mid ')' + 1 && ac_lo=$as_val
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+done
+case $ac_lo in #((
+?*) eval "$3=\$ac_lo"; ac_retval=0 ;;
+'') ac_retval=1 ;;
+esac
+  else
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+static long int longval (void) { return $2; }
+static unsigned long int ulongval (void) { return $2; }
+#include <stdio.h>
+#include <stdlib.h>
+int
+main (void)
+{
+
+  FILE *f = fopen ("conftest.val", "w");
+  if (! f)
+    return 1;
+  if (($2) < 0)
+    {
+      long int i = longval ();
+      if (i != ($2))
+	return 1;
+      fprintf (f, "%ld", i);
+    }
+  else
+    {
+      unsigned long int i = ulongval ();
+      if (i != ($2))
+	return 1;
+      fprintf (f, "%lu", i);
+    }
+  /* Do not output a trailing newline, as this causes \r\n confusion
+     on some platforms.  */
+  return ferror (f) || fclose (f) != 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  echo >>conftest.val; read $3 <conftest.val; ac_retval=0
+else $as_nop
+  ac_retval=1
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+rm -f conftest.val
+
+  fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_compute_int
+
+# ac_fn_c_check_member LINENO AGGR MEMBER VAR INCLUDES
+# ----------------------------------------------------
+# Tries to find if the field MEMBER exists in type AGGR, after including
+# INCLUDES, setting cache variable VAR accordingly.
+ac_fn_c_check_member ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2.$3" >&5
+printf %s "checking for $2.$3... " >&6; }
+if eval test \${$4+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$5
+int
+main (void)
+{
+static $2 ac_aggr;
+if (ac_aggr.$3)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  eval "$4=yes"
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$5
+int
+main (void)
+{
+static $2 ac_aggr;
+if (sizeof ac_aggr.$3)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  eval "$4=yes"
+else $as_nop
+  eval "$4=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+eval ac_res=\$$4
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_member
+ac_configure_args_raw=
+for ac_arg
+do
+  case $ac_arg in
+  *\'*)
+    ac_arg=`printf "%s\n" "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  as_fn_append ac_configure_args_raw " '$ac_arg'"
+done
+
+case $ac_configure_args_raw in
+  *$as_nl*)
+    ac_safe_unquote= ;;
+  *)
+    ac_unsafe_z='|&;<>()$`\\"*?[ ''	' # This string ends in space, tab.
+    ac_unsafe_a="$ac_unsafe_z#~"
+    ac_safe_unquote="s/ '\\([^$ac_unsafe_a][^$ac_unsafe_z]*\\)'/ \\1/g"
+    ac_configure_args_raw=`      printf "%s\n" "$ac_configure_args_raw" | sed "$ac_safe_unquote"`;;
+esac
+
+cat >config.log <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by GNU grep $as_me 3.7, which was
+generated by GNU Autoconf 2.71.  Invocation command line was
+
+  $ $0$ac_configure_args_raw
+
+_ACEOF
+exec 5>>config.log
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+/usr/bin/hostinfo      = `(/usr/bin/hostinfo) 2>/dev/null      || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    printf "%s\n" "PATH: $as_dir"
+  done
+IFS=$as_save_IFS
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *\'*)
+      ac_arg=`printf "%s\n" "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
+    2)
+      as_fn_append ac_configure_args1 " '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+	ac_must_keep_next=false # Got value, back to normal.
+      else
+	case $ac_arg in
+	  *=* | --config-cache | -C | -disable-* | --disable-* \
+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+	  | -with-* | --with-* | -without-* | --without-* | --x)
+	    case "$ac_configure_args0 " in
+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+	    esac
+	    ;;
+	  -* ) ac_must_keep_next=true ;;
+	esac
+      fi
+      as_fn_append ac_configure_args " '$ac_arg'"
+      ;;
+    esac
+  done
+done
+{ ac_configure_args0=; unset ac_configure_args0;}
+{ ac_configure_args1=; unset ac_configure_args1;}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Use '\'' to represent an apostrophe within the trap.
+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
+trap 'exit_status=$?
+  # Sanitize IFS.
+  IFS=" ""	$as_nl"
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    printf "%s\n" "## ---------------- ##
+## Cache variables. ##
+## ---------------- ##"
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+(
+  for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+printf "%s\n" "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+  (set) 2>&1 |
+    case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      sed -n \
+	"s/'\''/'\''\\\\'\'''\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+      ;; #(
+    *)
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+)
+    echo
+
+    printf "%s\n" "## ----------------- ##
+## Output variables. ##
+## ----------------- ##"
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=\$$ac_var
+      case $ac_val in
+      *\'\''*) ac_val=`printf "%s\n" "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+      esac
+      printf "%s\n" "$ac_var='\''$ac_val'\''"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      printf "%s\n" "## ------------------- ##
+## File substitutions. ##
+## ------------------- ##"
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=\$$ac_var
+	case $ac_val in
+	*\'\''*) ac_val=`printf "%s\n" "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+	esac
+	printf "%s\n" "$ac_var='\''$ac_val'\''"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      printf "%s\n" "## ----------- ##
+## confdefs.h. ##
+## ----------- ##"
+      echo
+      cat confdefs.h
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      printf "%s\n" "$as_me: caught signal $ac_signal"
+    printf "%s\n" "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core core.conftest.* &&
+    rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -f -r conftest* confdefs.h
+
+printf "%s\n" "/* confdefs.h */" > confdefs.h
+
+# Predefined preprocessor variables.
+
+printf "%s\n" "#define PACKAGE_NAME \"$PACKAGE_NAME\"" >>confdefs.h
+
+printf "%s\n" "#define PACKAGE_TARNAME \"$PACKAGE_TARNAME\"" >>confdefs.h
+
+printf "%s\n" "#define PACKAGE_VERSION \"$PACKAGE_VERSION\"" >>confdefs.h
+
+printf "%s\n" "#define PACKAGE_STRING \"$PACKAGE_STRING\"" >>confdefs.h
+
+printf "%s\n" "#define PACKAGE_BUGREPORT \"$PACKAGE_BUGREPORT\"" >>confdefs.h
+
+printf "%s\n" "#define PACKAGE_URL \"$PACKAGE_URL\"" >>confdefs.h
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer an explicitly selected file to automatically selected ones.
+if test -n "$CONFIG_SITE"; then
+  ac_site_files="$CONFIG_SITE"
+elif test "x$prefix" != xNONE; then
+  ac_site_files="$prefix/share/config.site $prefix/etc/config.site"
+else
+  ac_site_files="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
+fi
+
+for ac_site_file in $ac_site_files
+do
+  case $ac_site_file in #(
+  */*) :
+     ;; #(
+  *) :
+    ac_site_file=./$ac_site_file ;;
+esac
+  if test -f "$ac_site_file" && test -r "$ac_site_file"; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+printf "%s\n" "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file" \
+      || { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "failed to load site script $ac_site_file
+See \`config.log' for more details" "$LINENO" 5; }
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special files
+  # actually), so we avoid doing that.  DJGPP emulates it as a regular file.
+  if test /dev/null != "$cache_file" && test -f "$cache_file"; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+printf "%s\n" "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . "$cache_file";;
+      *)                      . "./$cache_file";;
+    esac
+  fi
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+printf "%s\n" "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Test code for whether the C compiler supports C89 (global declarations)
+ac_c_conftest_c89_globals='
+/* Does the compiler advertise C89 conformance?
+   Do not test the value of __STDC__, because some compilers set it to 0
+   while being otherwise adequately conformant. */
+#if !defined __STDC__
+# error "Compiler does not advertise C89 conformance"
+#endif
+
+#include <stddef.h>
+#include <stdarg.h>
+struct stat;
+/* Most of the following tests are stolen from RCS 5.7 src/conf.sh.  */
+struct buf { int x; };
+struct buf * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not \xHH hex character constants.
+   These do not provoke an error unfortunately, instead are silently treated
+   as an "x".  The following induces an error, until -std is added to get
+   proper ANSI mode.  Curiously \x00 != x always comes out true, for an
+   array size at least.  It is necessary to write \x00 == 0 to get something
+   that is true only with -std.  */
+int osf4_cc_array ['\''\x00'\'' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+   inside strings and character constants.  */
+#define FOO(x) '\''x'\''
+int xlc6_cc_array[FOO(a) == '\''x'\'' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, int *(*)(struct buf *, struct stat *, int),
+               int, int);'
+
+# Test code for whether the C compiler supports C89 (body of main).
+ac_c_conftest_c89_main='
+ok |= (argc == 0 || f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]);
+'
+
+# Test code for whether the C compiler supports C99 (global declarations)
+ac_c_conftest_c99_globals='
+// Does the compiler advertise C99 conformance?
+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L
+# error "Compiler does not advertise C99 conformance"
+#endif
+
+#include <stdbool.h>
+extern int puts (const char *);
+extern int printf (const char *, ...);
+extern int dprintf (int, const char *, ...);
+extern void *malloc (size_t);
+
+// Check varargs macros.  These examples are taken from C99 6.10.3.5.
+// dprintf is used instead of fprintf to avoid needing to declare
+// FILE and stderr.
+#define debug(...) dprintf (2, __VA_ARGS__)
+#define showlist(...) puts (#__VA_ARGS__)
+#define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__))
+static void
+test_varargs_macros (void)
+{
+  int x = 1234;
+  int y = 5678;
+  debug ("Flag");
+  debug ("X = %d\n", x);
+  showlist (The first, second, and third items.);
+  report (x>y, "x is %d but y is %d", x, y);
+}
+
+// Check long long types.
+#define BIG64 18446744073709551615ull
+#define BIG32 4294967295ul
+#define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0)
+#if !BIG_OK
+  #error "your preprocessor is broken"
+#endif
+#if BIG_OK
+#else
+  #error "your preprocessor is broken"
+#endif
+static long long int bignum = -9223372036854775807LL;
+static unsigned long long int ubignum = BIG64;
+
+struct incomplete_array
+{
+  int datasize;
+  double data[];
+};
+
+struct named_init {
+  int number;
+  const wchar_t *name;
+  double average;
+};
+
+typedef const char *ccp;
+
+static inline int
+test_restrict (ccp restrict text)
+{
+  // See if C++-style comments work.
+  // Iterate through items via the restricted pointer.
+  // Also check for declarations in for loops.
+  for (unsigned int i = 0; *(text+i) != '\''\0'\''; ++i)
+    continue;
+  return 0;
+}
+
+// Check varargs and va_copy.
+static bool
+test_varargs (const char *format, ...)
+{
+  va_list args;
+  va_start (args, format);
+  va_list args_copy;
+  va_copy (args_copy, args);
+
+  const char *str = "";
+  int number = 0;
+  float fnumber = 0;
+
+  while (*format)
+    {
+      switch (*format++)
+	{
+	case '\''s'\'': // string
+	  str = va_arg (args_copy, const char *);
+	  break;
+	case '\''d'\'': // int
+	  number = va_arg (args_copy, int);
+	  break;
+	case '\''f'\'': // float
+	  fnumber = va_arg (args_copy, double);
+	  break;
+	default:
+	  break;
+	}
+    }
+  va_end (args_copy);
+  va_end (args);
+
+  return *str && number && fnumber;
+}
+'
+
+# Test code for whether the C compiler supports C99 (body of main).
+ac_c_conftest_c99_main='
+  // Check bool.
+  _Bool success = false;
+  success |= (argc != 0);
+
+  // Check restrict.
+  if (test_restrict ("String literal") == 0)
+    success = true;
+  char *restrict newvar = "Another string";
+
+  // Check varargs.
+  success &= test_varargs ("s, d'\'' f .", "string", 65, 34.234);
+  test_varargs_macros ();
+
+  // Check flexible array members.
+  struct incomplete_array *ia =
+    malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10));
+  ia->datasize = 10;
+  for (int i = 0; i < ia->datasize; ++i)
+    ia->data[i] = i * 1.234;
+
+  // Check named initializers.
+  struct named_init ni = {
+    .number = 34,
+    .name = L"Test wide string",
+    .average = 543.34343,
+  };
+
+  ni.number = 58;
+
+  int dynamic_array[ni.number];
+  dynamic_array[0] = argv[0][0];
+  dynamic_array[ni.number - 1] = 543;
+
+  // work around unused variable warnings
+  ok |= (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == '\''x'\''
+	 || dynamic_array[ni.number - 1] != 543);
+'
+
+# Test code for whether the C compiler supports C11 (global declarations)
+ac_c_conftest_c11_globals='
+// Does the compiler advertise C11 conformance?
+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L
+# error "Compiler does not advertise C11 conformance"
+#endif
+
+// Check _Alignas.
+char _Alignas (double) aligned_as_double;
+char _Alignas (0) no_special_alignment;
+extern char aligned_as_int;
+char _Alignas (0) _Alignas (int) aligned_as_int;
+
+// Check _Alignof.
+enum
+{
+  int_alignment = _Alignof (int),
+  int_array_alignment = _Alignof (int[100]),
+  char_alignment = _Alignof (char)
+};
+_Static_assert (0 < -_Alignof (int), "_Alignof is signed");
+
+// Check _Noreturn.
+int _Noreturn does_not_return (void) { for (;;) continue; }
+
+// Check _Static_assert.
+struct test_static_assert
+{
+  int x;
+  _Static_assert (sizeof (int) <= sizeof (long int),
+                  "_Static_assert does not work in struct");
+  long int y;
+};
+
+// Check UTF-8 literals.
+#define u8 syntax error!
+char const utf8_literal[] = u8"happens to be ASCII" "another string";
+
+// Check duplicate typedefs.
+typedef long *long_ptr;
+typedef long int *long_ptr;
+typedef long_ptr long_ptr;
+
+// Anonymous structures and unions -- taken from C11 6.7.2.1 Example 1.
+struct anonymous
+{
+  union {
+    struct { int i; int j; };
+    struct { int k; long int l; } w;
+  };
+  int m;
+} v1;
+'
+
+# Test code for whether the C compiler supports C11 (body of main).
+ac_c_conftest_c11_main='
+  _Static_assert ((offsetof (struct anonymous, i)
+		   == offsetof (struct anonymous, w.k)),
+		  "Anonymous union alignment botch");
+  v1.i = 2;
+  v1.w.k = 5;
+  ok |= v1.i != 5;
+'
+
+# Test code for whether the C compiler supports C11 (complete).
+ac_c_conftest_c11_program="${ac_c_conftest_c89_globals}
+${ac_c_conftest_c99_globals}
+${ac_c_conftest_c11_globals}
+
+int
+main (int argc, char **argv)
+{
+  int ok = 0;
+  ${ac_c_conftest_c89_main}
+  ${ac_c_conftest_c99_main}
+  ${ac_c_conftest_c11_main}
+  return ok;
+}
+"
+
+# Test code for whether the C compiler supports C99 (complete).
+ac_c_conftest_c99_program="${ac_c_conftest_c89_globals}
+${ac_c_conftest_c99_globals}
+
+int
+main (int argc, char **argv)
+{
+  int ok = 0;
+  ${ac_c_conftest_c89_main}
+  ${ac_c_conftest_c99_main}
+  return ok;
+}
+"
+
+# Test code for whether the C compiler supports C89 (complete).
+ac_c_conftest_c89_program="${ac_c_conftest_c89_globals}
+
+int
+main (int argc, char **argv)
+{
+  int ok = 0;
+  ${ac_c_conftest_c89_main}
+  return ok;
+}
+"
+
+as_fn_append ac_header_c_list " stdio.h stdio_h HAVE_STDIO_H"
+as_fn_append ac_header_c_list " stdlib.h stdlib_h HAVE_STDLIB_H"
+as_fn_append ac_header_c_list " string.h string_h HAVE_STRING_H"
+as_fn_append ac_header_c_list " inttypes.h inttypes_h HAVE_INTTYPES_H"
+as_fn_append ac_header_c_list " stdint.h stdint_h HAVE_STDINT_H"
+as_fn_append ac_header_c_list " strings.h strings_h HAVE_STRINGS_H"
+as_fn_append ac_header_c_list " sys/stat.h sys_stat_h HAVE_SYS_STAT_H"
+as_fn_append ac_header_c_list " sys/types.h sys_types_h HAVE_SYS_TYPES_H"
+as_fn_append ac_header_c_list " unistd.h unistd_h HAVE_UNISTD_H"
+as_fn_append ac_header_c_list " wchar.h wchar_h HAVE_WCHAR_H"
+as_fn_append ac_header_c_list " minix/config.h minix_config_h HAVE_MINIX_CONFIG_H"
+as_fn_append ac_func_c_list " btowc HAVE_BTOWC"
+as_fn_append ac_header_c_list " sys/param.h sys_param_h HAVE_SYS_PARAM_H"
+as_fn_append ac_func_c_list " _set_invalid_parameter_handler HAVE__SET_INVALID_PARAMETER_HANDLER"
+as_fn_append ac_header_c_list " sys/socket.h sys_socket_h HAVE_SYS_SOCKET_H"
+as_fn_append ac_func_c_list " fchdir HAVE_FCHDIR"
+as_fn_append ac_header_c_list " dirent.h dirent_h HAVE_DIRENT_H"
+as_fn_append ac_func_c_list " fcntl HAVE_FCNTL"
+as_fn_append ac_func_c_list " symlink HAVE_SYMLINK"
+as_fn_append ac_func_c_list " fdopendir HAVE_FDOPENDIR"
+as_fn_append ac_func_c_list " mempcpy HAVE_MEMPCPY"
+as_fn_append ac_header_c_list " fnmatch.h fnmatch_h HAVE_FNMATCH_H"
+as_fn_append ac_func_c_list " fnmatch HAVE_FNMATCH"
+as_fn_append ac_func_c_list " mbsrtowcs HAVE_MBSRTOWCS"
+as_fn_append ac_header_c_list " stdio_ext.h stdio_ext_h HAVE_STDIO_EXT_H"
+as_fn_append ac_func_c_list " fstatat HAVE_FSTATAT"
+as_fn_append ac_func_c_list " openat HAVE_OPENAT"
+as_fn_append ac_func_c_list " fstatfs HAVE_FSTATFS"
+as_fn_append ac_header_c_list " sys/vfs.h sys_vfs_h HAVE_SYS_VFS_H"
+as_fn_append ac_func_c_list " getdtablesize HAVE_GETDTABLESIZE"
+gl_getopt_required=GNU
+as_fn_append ac_header_c_list " getopt.h getopt_h HAVE_GETOPT_H"
+as_fn_append ac_header_c_list " sys/cdefs.h sys_cdefs_h HAVE_SYS_CDEFS_H"
+as_fn_append ac_func_c_list " getprogname HAVE_GETPROGNAME"
+as_fn_append ac_func_c_list " getexecname HAVE_GETEXECNAME"
+as_fn_append ac_header_c_list " threads.h threads_h HAVE_THREADS_H"
+as_fn_append ac_header_c_list " iconv.h iconv_h HAVE_ICONV_H"
+as_fn_append ac_header_c_list " limits.h limits_h HAVE_LIMITS_H"
+as_fn_append ac_func_c_list " isblank HAVE_ISBLANK"
+as_fn_append ac_func_c_list " iswcntrl HAVE_ISWCNTRL"
+as_fn_append ac_header_c_list " crtdefs.h crtdefs_h HAVE_CRTDEFS_H"
+as_fn_append ac_header_c_list " wctype.h wctype_h HAVE_WCTYPE_H"
+as_fn_append ac_func_c_list " iswblank HAVE_ISWBLANK"
+as_fn_append ac_header_c_list " langinfo.h langinfo_h HAVE_LANGINFO_H"
+as_fn_append ac_header_c_list " xlocale.h xlocale_h HAVE_XLOCALE_H"
+as_fn_append ac_func_c_list " lstat HAVE_LSTAT"
+as_fn_append ac_func_c_list " mbsinit HAVE_MBSINIT"
+as_fn_append ac_func_c_list " mbrtowc HAVE_MBRTOWC"
+as_fn_append ac_func_c_list " mbrlen HAVE_MBRLEN"
+as_fn_append ac_func_c_list " mbslen HAVE_MBSLEN"
+as_fn_append ac_header_c_list " sys/mman.h sys_mman_h HAVE_SYS_MMAN_H"
+as_fn_append ac_func_c_list " mprotect HAVE_MPROTECT"
+as_fn_append ac_func_c_list " nl_langinfo HAVE_NL_LANGINFO"
+as_fn_append ac_func_c_list " pipe HAVE_PIPE"
+as_fn_append ac_header_c_list " malloc.h malloc_h HAVE_MALLOC_H"
+as_fn_append ac_func_c_list " iswctype HAVE_ISWCTYPE"
+as_fn_append ac_func_c_list " sigaltstack HAVE_SIGALTSTACK"
+as_fn_append ac_func_c_list " setrlimit HAVE_SETRLIMIT"
+as_fn_append ac_func_c_list " getrlimit HAVE_GETRLIMIT"
+as_fn_append ac_header_c_list " sys/time.h sys_time_h HAVE_SYS_TIME_H"
+as_fn_append ac_func_c_list " strerror_r HAVE_STRERROR_R"
+as_fn_append ac_func_c_list " __xpg_strerror_r HAVE___XPG_STRERROR_R"
+as_fn_append ac_func_c_list " strtoimax HAVE_STRTOIMAX"
+as_fn_append ac_func_c_list " strtoumax HAVE_STRTOUMAX"
+as_fn_append ac_header_c_list " features.h features_h HAVE_FEATURES_H"
+as_fn_append ac_func_c_list " wcrtomb HAVE_WCRTOMB"
+as_fn_append ac_func_c_list " wctob HAVE_WCTOB"
+as_fn_append ac_func_c_list " wcwidth HAVE_WCWIDTH"
+as_fn_append ac_func_c_list " wmempcpy HAVE_WMEMPCPY"
+as_fn_append ac_header_c_list " arpa/inet.h arpa_inet_h HAVE_ARPA_INET_H"
+as_fn_append ac_func_c_list " ftruncate HAVE_FTRUNCATE"
+as_fn_append ac_func_c_list " gettimeofday HAVE_GETTIMEOFDAY"
+as_fn_append ac_func_c_list " duplocale HAVE_DUPLOCALE"
+as_fn_append ac_header_c_list " netdb.h netdb_h HAVE_NETDB_H"
+as_fn_append ac_header_c_list " netinet/in.h netinet_in_h HAVE_NETINET_IN_H"
+as_fn_append ac_func_c_list " newlocale HAVE_NEWLOCALE"
+as_fn_append ac_func_c_list " uselocale HAVE_USELOCALE"
+as_fn_append ac_func_c_list " freelocale HAVE_FREELOCALE"
+as_fn_append ac_header_c_list " sys/select.h sys_select_h HAVE_SYS_SELECT_H"
+as_fn_append ac_header_c_list " pthread.h pthread_h HAVE_PTHREAD_H"
+as_fn_append ac_func_c_list " pthread_sigmask HAVE_PTHREAD_SIGMASK"
+as_fn_append ac_header_c_list " sys/wait.h sys_wait_h HAVE_SYS_WAIT_H"
+as_fn_append ac_func_c_list " setenv HAVE_SETENV"
+as_fn_append ac_func_c_list " sigaction HAVE_SIGACTION"
+as_fn_append ac_func_c_list " siginterrupt HAVE_SIGINTERRUPT"
+as_fn_append ac_func_c_list " sleep HAVE_SLEEP"
+as_fn_append ac_func_c_list " snprintf HAVE_SNPRINTF"
+as_fn_append ac_func_c_list " catgets HAVE_CATGETS"
+as_fn_append ac_header_c_list " sys/ioctl.h sys_ioctl_h HAVE_SYS_IOCTL_H"
+as_fn_append ac_func_c_list " shutdown HAVE_SHUTDOWN"
+as_fn_append ac_header_c_list " sys/uio.h sys_uio_h HAVE_SYS_UIO_H"
+as_fn_append ac_func_c_list " vasnprintf HAVE_VASNPRINTF"
+as_fn_append ac_func_c_list " isascii HAVE_ISASCII"
+as_fn_append ac_func_c_list " setlocale HAVE_SETLOCALE"
+gt_needs="$gt_needs "
+
+# Auxiliary files required by this configure script.
+ac_aux_files="config.rpath compile config.guess config.sub missing install-sh"
+
+# Locations in which to look for auxiliary files.
+ac_aux_dir_candidates="${srcdir}/build-aux"
+
+# Search for a directory containing all of the required auxiliary files,
+# $ac_aux_files, from the $PATH-style list $ac_aux_dir_candidates.
+# If we don't find one directory that contains all the files we need,
+# we report the set of missing files from the *first* directory in
+# $ac_aux_dir_candidates and give up.
+ac_missing_aux_files=""
+ac_first_candidate=:
+printf "%s\n" "$as_me:${as_lineno-$LINENO}: looking for aux files: $ac_aux_files" >&5
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in $ac_aux_dir_candidates
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+  as_found=:
+
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}:  trying $as_dir" >&5
+  ac_aux_dir_found=yes
+  ac_install_sh=
+  for ac_aux in $ac_aux_files
+  do
+    # As a special case, if "install-sh" is required, that requirement
+    # can be satisfied by any of "install-sh", "install.sh", or "shtool",
+    # and $ac_install_sh is set appropriately for whichever one is found.
+    if test x"$ac_aux" = x"install-sh"
+    then
+      if test -f "${as_dir}install-sh"; then
+        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}install-sh found" >&5
+        ac_install_sh="${as_dir}install-sh -c"
+      elif test -f "${as_dir}install.sh"; then
+        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}install.sh found" >&5
+        ac_install_sh="${as_dir}install.sh -c"
+      elif test -f "${as_dir}shtool"; then
+        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}shtool found" >&5
+        ac_install_sh="${as_dir}shtool install -c"
+      else
+        ac_aux_dir_found=no
+        if $ac_first_candidate; then
+          ac_missing_aux_files="${ac_missing_aux_files} install-sh"
+        else
+          break
+        fi
+      fi
+    else
+      if test -f "${as_dir}${ac_aux}"; then
+        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}${ac_aux} found" >&5
+      else
+        ac_aux_dir_found=no
+        if $ac_first_candidate; then
+          ac_missing_aux_files="${ac_missing_aux_files} ${ac_aux}"
+        else
+          break
+        fi
+      fi
+    fi
+  done
+  if test "$ac_aux_dir_found" = yes; then
+    ac_aux_dir="$as_dir"
+    break
+  fi
+  ac_first_candidate=false
+
+  as_found=false
+done
+IFS=$as_save_IFS
+if $as_found
+then :
+
+else $as_nop
+  as_fn_error $? "cannot find required auxiliary files:$ac_missing_aux_files" "$LINENO" 5
+fi
+
+
+# These three variables are undocumented and unsupported,
+# and are intended to be withdrawn in a future Autoconf release.
+# They can cause serious problems if a builder's source tree is in a directory
+# whose full name contains unusual characters.
+if test -f "${ac_aux_dir}config.guess"; then
+  ac_config_guess="$SHELL ${ac_aux_dir}config.guess"
+fi
+if test -f "${ac_aux_dir}config.sub"; then
+  ac_config_sub="$SHELL ${ac_aux_dir}config.sub"
+fi
+if test -f "$ac_aux_dir/configure"; then
+  ac_configure="$SHELL ${ac_aux_dir}configure"
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val=\$ac_cv_env_${ac_var}_value
+  eval ac_new_val=\$ac_env_${ac_var}_value
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+printf "%s\n" "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+printf "%s\n" "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	# differences in whitespace do not lead to failure.
+	ac_old_val_w=`echo x $ac_old_val`
+	ac_new_val_w=`echo x $ac_new_val`
+	if test "$ac_old_val_w" != "$ac_new_val_w"; then
+	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+printf "%s\n" "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	  ac_cache_corrupted=:
+	else
+	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+printf "%s\n" "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+	  eval $ac_var=\$ac_old_val
+	fi
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5
+printf "%s\n" "$as_me:   former value:  \`$ac_old_val'" >&2;}
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5
+printf "%s\n" "$as_me:   current value: \`$ac_new_val'" >&2;}
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *\'*) ac_arg=$ac_var=`printf "%s\n" "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+printf "%s\n" "$as_me: error: changes in the environment can compromise the build" >&2;}
+  as_fn_error $? "run \`${MAKE-make} distclean' and/or \`rm $cache_file'
+	    and start over" "$LINENO" 5
+fi
+## -------------------- ##
+## Main body of script. ##
+## -------------------- ##
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+if test -n "$GREP" || test -n "$EGREP"; then
+  as_fn_error $? "no working 'grep' found
+  A working 'grep' command is needed to build GNU Grep.
+  This 'grep' should support -e and long lines.
+  On Solaris 10, install the package SUNWggrp or SUNWxcu4.
+  On Solaris 11, install the package text/gnu-grep or system/xopen/xcu4." "$LINENO" 5
+fi
+
+
+
+
+printf "%s\n" "#define GREP 1" >>confdefs.h
+
+
+
+
+am__api_version='1.16'
+
+
+
+  # Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+# Reject install programs that cannot install multiple files.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+printf %s "checking for a BSD-compatible install... " >&6; }
+if test -z "$INSTALL"; then
+if test ${ac_cv_path_install+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    # Account for fact that we put trailing slashes in our PATH walk.
+case $as_dir in #((
+  ./ | /[cC]/* | \
+  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+  ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
+  /usr/ucb/* ) ;;
+  *)
+    # OSF1 and SCO ODT 3.0 have their own names for install.
+    # Don't use installbsd from OSF since it installs stuff as root
+    # by default.
+    for ac_prog in ginstall scoinst install; do
+      for ac_exec_ext in '' $ac_executable_extensions; do
+	if as_fn_executable_p "$as_dir$ac_prog$ac_exec_ext"; then
+	  if test $ac_prog = install &&
+	    grep dspmsg "$as_dir$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # AIX install.  It has an incompatible calling convention.
+	    :
+	  elif test $ac_prog = install &&
+	    grep pwplus "$as_dir$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # program-specific install script used by HP pwplus--don't use.
+	    :
+	  else
+	    rm -rf conftest.one conftest.two conftest.dir
+	    echo one > conftest.one
+	    echo two > conftest.two
+	    mkdir conftest.dir
+	    if "$as_dir$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir/" &&
+	      test -s conftest.one && test -s conftest.two &&
+	      test -s conftest.dir/conftest.one &&
+	      test -s conftest.dir/conftest.two
+	    then
+	      ac_cv_path_install="$as_dir$ac_prog$ac_exec_ext -c"
+	      break 3
+	    fi
+	  fi
+	fi
+      done
+    done
+    ;;
+esac
+
+  done
+IFS=$as_save_IFS
+
+rm -rf conftest.one conftest.two conftest.dir
+
+fi
+  if test ${ac_cv_path_install+y}; then
+    INSTALL=$ac_cv_path_install
+  else
+    # As a last resort, use the slow shell script.  Don't cache a
+    # value for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the value is a relative name.
+    INSTALL=$ac_install_sh
+  fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+printf "%s\n" "$INSTALL" >&6; }
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether build environment is sane" >&5
+printf %s "checking whether build environment is sane... " >&6; }
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name.  Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+  *[\\\"\#\$\&\'\`$am_lf]*)
+    as_fn_error $? "unsafe absolute working directory name" "$LINENO" 5;;
+esac
+case $srcdir in
+  *[\\\"\#\$\&\'\`$am_lf\ \	]*)
+    as_fn_error $? "unsafe srcdir value: '$srcdir'" "$LINENO" 5;;
+esac
+
+# Do 'set' in a subshell so we don't clobber the current shell's
+# arguments.  Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+   am_has_slept=no
+   for am_try in 1 2; do
+     echo "timestamp, slept: $am_has_slept" > conftest.file
+     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+     if test "$*" = "X"; then
+	# -L didn't work.
+	set X `ls -t "$srcdir/configure" conftest.file`
+     fi
+     if test "$*" != "X $srcdir/configure conftest.file" \
+	&& test "$*" != "X conftest.file $srcdir/configure"; then
+
+	# If neither matched, then we have a broken ls.  This can happen
+	# if, for instance, CONFIG_SHELL is bash and it inherits a
+	# broken ls alias from the environment.  This has actually
+	# happened.  Such a system could not be considered "sane".
+	as_fn_error $? "ls -t appears to fail.  Make sure there is not a broken
+  alias in your environment" "$LINENO" 5
+     fi
+     if test "$2" = conftest.file || test $am_try -eq 2; then
+       break
+     fi
+     # Just in case.
+     sleep 1
+     am_has_slept=yes
+   done
+   test "$2" = conftest.file
+   )
+then
+   # Ok.
+   :
+else
+   as_fn_error $? "newly created file is older than distributed files!
+Check your system clock" "$LINENO" 5
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+# If we didn't sleep, we still need to ensure time stamps of config.status and
+# generated files are strictly newer.
+am_sleep_pid=
+if grep 'slept: no' conftest.file >/dev/null 2>&1; then
+  ( sleep 1 ) &
+  am_sleep_pid=$!
+fi
+
+rm -f conftest.file
+
+test "$program_prefix" != NONE &&
+  program_transform_name="s&^&$program_prefix&;$program_transform_name"
+# Use a double $ so make ignores it.
+test "$program_suffix" != NONE &&
+  program_transform_name="s&\$&$program_suffix&;$program_transform_name"
+# Double any \ or $.
+# By default was `s,x,x', remove it if useless.
+ac_script='s/[\\$]/&&/g;s/;s,x,x,$//'
+program_transform_name=`printf "%s\n" "$program_transform_name" | sed "$ac_script"`
+
+
+# Expand $ac_aux_dir to an absolute path.
+am_aux_dir=`cd "$ac_aux_dir" && pwd`
+
+
+  if test x"${MISSING+set}" != xset; then
+  MISSING="\${SHELL} '$am_aux_dir/missing'"
+fi
+# Use eval to expand $SHELL
+if eval "$MISSING --is-lightweight"; then
+  am_missing_run="$MISSING "
+else
+  am_missing_run=
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: 'missing' script is too old or missing" >&5
+printf "%s\n" "$as_me: WARNING: 'missing' script is too old or missing" >&2;}
+fi
+
+if test x"${install_sh+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+  *)
+    install_sh="\${SHELL} $am_aux_dir/install-sh"
+  esac
+fi
+
+# Installed binaries are usually stripped using 'strip' when the user
+# run "make install-strip".  However 'strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the 'STRIP' environment variable to overrule this program.
+if test "$cross_compiling" != no; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_STRIP+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$STRIP"; then
+  ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
+printf "%s\n" "$STRIP" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+  ac_ct_STRIP=$STRIP
+  # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_STRIP+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_STRIP"; then
+  ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_STRIP="strip"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
+printf "%s\n" "$ac_ct_STRIP" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_STRIP" = x; then
+    STRIP=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    STRIP=$ac_ct_STRIP
+  fi
+else
+  STRIP="$ac_cv_prog_STRIP"
+fi
+
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a race-free mkdir -p" >&5
+printf %s "checking for a race-free mkdir -p... " >&6; }
+if test -z "$MKDIR_P"; then
+  if test ${ac_cv_path_mkdir+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/opt/sfw/bin
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_prog in mkdir gmkdir; do
+	 for ac_exec_ext in '' $ac_executable_extensions; do
+	   as_fn_executable_p "$as_dir$ac_prog$ac_exec_ext" || continue
+	   case `"$as_dir$ac_prog$ac_exec_ext" --version 2>&1` in #(
+	     'mkdir ('*'coreutils) '* | \
+	     'BusyBox '* | \
+	     'mkdir (fileutils) '4.1*)
+	       ac_cv_path_mkdir=$as_dir$ac_prog$ac_exec_ext
+	       break 3;;
+	   esac
+	 done
+       done
+  done
+IFS=$as_save_IFS
+
+fi
+
+  test -d ./--version && rmdir ./--version
+  if test ${ac_cv_path_mkdir+y}; then
+    MKDIR_P="$ac_cv_path_mkdir -p"
+  else
+    # As a last resort, use the slow shell script.  Don't cache a
+    # value for MKDIR_P within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the value is a relative name.
+    MKDIR_P="$ac_install_sh -d"
+  fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5
+printf "%s\n" "$MKDIR_P" >&6; }
+
+for ac_prog in gawk mawk nawk awk
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_AWK+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$AWK"; then
+  ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_AWK="$ac_prog"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+printf "%s\n" "$AWK" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  test -n "$AWK" && break
+done
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} sets \$(MAKE)" >&5
+printf %s "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
+set x ${MAKE-make}
+ac_make=`printf "%s\n" "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
+if eval test \${ac_cv_prog_make_${ac_make}_set+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat >conftest.make <<\_ACEOF
+SHELL = /bin/sh
+all:
+	@echo '@@@%%%=$(MAKE)=@@@%%%'
+_ACEOF
+# GNU make sometimes prints "make[1]: Entering ...", which would confuse us.
+case `${MAKE-make} -f conftest.make 2>/dev/null` in
+  *@@@%%%=?*=@@@%%%*)
+    eval ac_cv_prog_make_${ac_make}_set=yes;;
+  *)
+    eval ac_cv_prog_make_${ac_make}_set=no;;
+esac
+rm -f conftest.make
+fi
+if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+  SET_MAKE=
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+  SET_MAKE="MAKE=${MAKE-make}"
+fi
+
+rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+
+# Check whether --enable-silent-rules was given.
+if test ${enable_silent_rules+y}
+then :
+  enableval=$enable_silent_rules;
+fi
+
+case $enable_silent_rules in # (((
+  yes) AM_DEFAULT_VERBOSITY=0;;
+   no) AM_DEFAULT_VERBOSITY=1;;
+    *) AM_DEFAULT_VERBOSITY=1;;
+esac
+am_make=${MAKE-make}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $am_make supports nested variables" >&5
+printf %s "checking whether $am_make supports nested variables... " >&6; }
+if test ${am_cv_make_support_nested_variables+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if printf "%s\n" 'TRUE=$(BAR$(V))
+BAR0=false
+BAR1=true
+V=1
+am__doit:
+	@$(TRUE)
+.PHONY: am__doit' | $am_make -f - >/dev/null 2>&1; then
+  am_cv_make_support_nested_variables=yes
+else
+  am_cv_make_support_nested_variables=no
+fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $am_cv_make_support_nested_variables" >&5
+printf "%s\n" "$am_cv_make_support_nested_variables" >&6; }
+if test $am_cv_make_support_nested_variables = yes; then
+    AM_V='$(V)'
+  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
+else
+  AM_V=$AM_DEFAULT_VERBOSITY
+  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
+fi
+AM_BACKSLASH='\'
+
+if test "`cd $srcdir && pwd`" != "`pwd`"; then
+  # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
+  # is not polluted with repeated "-I."
+  am__isrc=' -I$(srcdir)'
+  # test to see if srcdir already configured
+  if test -f $srcdir/config.status; then
+    as_fn_error $? "source directory already configured; run \"make distclean\" there first" "$LINENO" 5
+  fi
+fi
+
+# test whether we have cygpath
+if test -z "$CYGPATH_W"; then
+  if (cygpath --version) >/dev/null 2>/dev/null; then
+    CYGPATH_W='cygpath -w'
+  else
+    CYGPATH_W=echo
+  fi
+fi
+
+
+# Define the identity of the package.
+ PACKAGE='grep'
+ VERSION='3.7'
+
+
+printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
+
+
+printf "%s\n" "#define VERSION \"$VERSION\"" >>confdefs.h
+
+# Some tools Automake needs.
+
+ACLOCAL=${ACLOCAL-"${am_missing_run}aclocal-${am__api_version}"}
+
+
+AUTOCONF=${AUTOCONF-"${am_missing_run}autoconf"}
+
+
+AUTOMAKE=${AUTOMAKE-"${am_missing_run}automake-${am__api_version}"}
+
+
+AUTOHEADER=${AUTOHEADER-"${am_missing_run}autoheader"}
+
+
+MAKEINFO=${MAKEINFO-"${am_missing_run}makeinfo"}
+
+# For better backward compatibility.  To be removed once Automake 1.9.x
+# dies out for good.  For more background, see:
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
+mkdir_p='$(MKDIR_P)'
+
+# We need awk for the "check" target (and possibly the TAP driver).  The
+# system "awk" is bad on some platforms.
+# Always define AMTAR for backward compatibility.  Yes, it's still used
+# in the wild :-(  We should find a proper way to deprecate it ...
+AMTAR='$${TAR-tar}'
+
+
+# We'll loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar  pax cpio none'
+
+am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'
+
+
+
+
+
+# Variables for tags utilities; see am/tags.am
+if test -z "$CTAGS"; then
+  CTAGS=ctags
+fi
+
+if test -z "$ETAGS"; then
+  ETAGS=etags
+fi
+
+if test -z "$CSCOPE"; then
+  CSCOPE=cscope
+fi
+
+
+
+# POSIX will say in a future version that running "rm -f" with no argument
+# is OK; and we want to be able to make that assumption in our Makefile
+# recipes.  So use an aggressive probe to check that the usage we want is
+# actually supported "in the wild" to an acceptable degree.
+# See automake bug#10828.
+# To make any issue more visible, cause the running configure to be aborted
+# by default if the 'rm' program in use doesn't match our expectations; the
+# user can still override this though.
+if rm -f && rm -fr && rm -rf; then : OK; else
+  cat >&2 <<'END'
+Oops!
+
+Your 'rm' program seems unable to run without file operands specified
+on the command line, even when the '-f' option is present.  This is contrary
+to the behaviour of most rm programs out there, and not conforming with
+the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
+
+Please tell bug-automake@gnu.org about your system, including the value
+of your $PATH and any error possibly output before this message.  This
+can help us improve future automake versions.
+
+END
+  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
+    echo 'Configuration will proceed anyway, since you have set the' >&2
+    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
+    echo >&2
+  else
+    cat >&2 <<'END'
+Aborting the configuration process, to ensure you take notice of the issue.
+
+You can download and install GNU coreutils to get an 'rm' implementation
+that behaves properly: <https://www.gnu.org/software/coreutils/>.
+
+If you want to complete the configuration process using your problematic
+'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
+to "yes", and re-run configure.
+
+END
+    as_fn_error $? "Your 'rm' program is bad, sorry." "$LINENO" 5
+  fi
+fi
+
+# Check whether --enable-silent-rules was given.
+if test ${enable_silent_rules+y}
+then :
+  enableval=$enable_silent_rules;
+fi
+
+case $enable_silent_rules in # (((
+  yes) AM_DEFAULT_VERBOSITY=0;;
+   no) AM_DEFAULT_VERBOSITY=1;;
+    *) AM_DEFAULT_VERBOSITY=0;;
+esac
+am_make=${MAKE-make}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $am_make supports nested variables" >&5
+printf %s "checking whether $am_make supports nested variables... " >&6; }
+if test ${am_cv_make_support_nested_variables+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if printf "%s\n" 'TRUE=$(BAR$(V))
+BAR0=false
+BAR1=true
+V=1
+am__doit:
+	@$(TRUE)
+.PHONY: am__doit' | $am_make -f - >/dev/null 2>&1; then
+  am_cv_make_support_nested_variables=yes
+else
+  am_cv_make_support_nested_variables=no
+fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $am_cv_make_support_nested_variables" >&5
+printf "%s\n" "$am_cv_make_support_nested_variables" >&6; }
+if test $am_cv_make_support_nested_variables = yes; then
+    AM_V='$(V)'
+  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
+else
+  AM_V=$AM_DEFAULT_VERBOSITY
+  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
+fi
+AM_BACKSLASH='\'
+ # make --enable-silent-rules the default.
+
+ac_config_headers="$ac_config_headers config.h:config.hin"
+
+
+
+
+  # Make sure we can run config.sub.
+$SHELL "${ac_aux_dir}config.sub" sun4 >/dev/null 2>&1 ||
+  as_fn_error $? "cannot run $SHELL ${ac_aux_dir}config.sub" "$LINENO" 5
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
+printf %s "checking build system type... " >&6; }
+if test ${ac_cv_build+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_build_alias=$build_alias
+test "x$ac_build_alias" = x &&
+  ac_build_alias=`$SHELL "${ac_aux_dir}config.guess"`
+test "x$ac_build_alias" = x &&
+  as_fn_error $? "cannot guess build type; you must specify one" "$LINENO" 5
+ac_cv_build=`$SHELL "${ac_aux_dir}config.sub" $ac_build_alias` ||
+  as_fn_error $? "$SHELL ${ac_aux_dir}config.sub $ac_build_alias failed" "$LINENO" 5
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
+printf "%s\n" "$ac_cv_build" >&6; }
+case $ac_cv_build in
+*-*-*) ;;
+*) as_fn_error $? "invalid value of canonical build" "$LINENO" 5;;
+esac
+build=$ac_cv_build
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_build
+shift
+build_cpu=$1
+build_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+build_os=$*
+IFS=$ac_save_IFS
+case $build_os in *\ *) build_os=`echo "$build_os" | sed 's/ /-/g'`;; esac
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
+printf %s "checking host system type... " >&6; }
+if test ${ac_cv_host+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "x$host_alias" = x; then
+  ac_cv_host=$ac_cv_build
+else
+  ac_cv_host=`$SHELL "${ac_aux_dir}config.sub" $host_alias` ||
+    as_fn_error $? "$SHELL ${ac_aux_dir}config.sub $host_alias failed" "$LINENO" 5
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
+printf "%s\n" "$ac_cv_host" >&6; }
+case $ac_cv_host in
+*-*-*) ;;
+*) as_fn_error $? "invalid value of canonical host" "$LINENO" 5;;
+esac
+host=$ac_cv_host
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_host
+shift
+host_cpu=$1
+host_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+host_os=$*
+IFS=$ac_save_IFS
+case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
+
+
+for ac_prog in gawk mawk nawk awk
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_AWK+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$AWK"; then
+  ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_AWK="$ac_prog"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+printf "%s\n" "$AWK" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  test -n "$AWK" && break
+done
+
+
+
+
+
+
+
+
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+printf "%s\n" "$ac_ct_CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+          if test -n "$ac_tool_prefix"; then
+    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  fi
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    if test "$as_dir$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl.exe
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl.exe
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+printf "%s\n" "$ac_ct_CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CC" && break
+done
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+fi
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}clang", so it can be a program name with args.
+set dummy ${ac_tool_prefix}clang; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}clang"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "clang", so it can be a program name with args.
+set dummy clang; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="clang"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+printf "%s\n" "$ac_ct_CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+fi
+
+
+test -z "$CC" && { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "no acceptable C compiler found in \$PATH
+See \`config.log' for more details" "$LINENO" 5; }
+
+# Provide some information about the compiler.
+printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion -version; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+  fi
+  rm -f conftest.er1 conftest.err
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
+printf %s "checking whether the C compiler works... " >&6; }
+ac_link_default=`printf "%s\n" "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+
+# The possible output files:
+ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"
+
+ac_rmfiles=
+for ac_file in $ac_files
+do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    * ) ac_rmfiles="$ac_rmfiles $ac_file";;
+  esac
+done
+rm -f $ac_rmfiles
+
+if { { ac_try="$ac_link_default"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_link_default") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+then :
+  # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
+# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
+# in a Makefile.  We should not override ac_cv_exeext if it was cached,
+# so that the user can short-circuit this test for compilers unknown to
+# Autoconf.
+for ac_file in $ac_files ''
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj )
+	;;
+    [ab].out )
+	# We found the default executable, but exeext='' is most
+	# certainly right.
+	break;;
+    *.* )
+	if test ${ac_cv_exeext+y} && test "$ac_cv_exeext" != no;
+	then :; else
+	   ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	fi
+	# We set ac_cv_exeext here because the later test for it is not
+	# safe: cross compilers may not add the suffix if given an `-o'
+	# argument, so we may need to know it at that point already.
+	# Even if this section looks crufty: it has the advantage of
+	# actually working.
+	break;;
+    * )
+	break;;
+  esac
+done
+test "$ac_cv_exeext" = no && ac_cv_exeext=
+
+else $as_nop
+  ac_file=''
+fi
+if test -z "$ac_file"
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "C compiler cannot create executables
+See \`config.log' for more details" "$LINENO" 5; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+printf %s "checking for C compiler default output file name... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+printf "%s\n" "$ac_file" >&6; }
+ac_exeext=$ac_cv_exeext
+
+rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+printf %s "checking for suffix of executables... " >&6; }
+if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+then :
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	  break;;
+    * ) break;;
+  esac
+done
+else $as_nop
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest conftest$ac_cv_exeext
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+printf "%s\n" "$ac_cv_exeext" >&6; }
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdio.h>
+int
+main (void)
+{
+FILE *f = fopen ("conftest.out", "w");
+ return ferror (f) || fclose (f) != 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files="$ac_clean_files conftest.out"
+# Check that the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+printf %s "checking whether we are cross compiling... " >&6; }
+if test "$cross_compiling" != yes; then
+  { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+  if { ac_try='./conftest$ac_cv_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details" "$LINENO" 5; }
+    fi
+  fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+printf "%s\n" "$cross_compiling" >&6; }
+
+rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out
+ac_clean_files=$ac_clean_files_save
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+printf %s "checking for suffix of object files... " >&6; }
+if test ${ac_cv_objext+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+then :
+  for ac_file in conftest.o conftest.obj conftest.*; do
+  test -f "$ac_file" || continue;
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+printf "%s\n" "$ac_cv_objext" >&6; }
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports GNU C" >&5
+printf %s "checking whether the compiler supports GNU C... " >&6; }
+if test ${ac_cv_c_compiler_gnu+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_compiler_gnu=yes
+else $as_nop
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+printf "%s\n" "$ac_cv_c_compiler_gnu" >&6; }
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+if test $ac_compiler_gnu = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+y}
+ac_save_CFLAGS=$CFLAGS
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+printf %s "checking whether $CC accepts -g... " >&6; }
+if test ${ac_cv_prog_cc_g+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_save_c_werror_flag=$ac_c_werror_flag
+   ac_c_werror_flag=yes
+   ac_cv_prog_cc_g=no
+   CFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_g=yes
+else $as_nop
+  CFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+else $as_nop
+  ac_c_werror_flag=$ac_save_c_werror_flag
+	 CFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+   ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+printf "%s\n" "$ac_cv_prog_cc_g" >&6; }
+if test $ac_test_CFLAGS; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+ac_prog_cc_stdc=no
+if test x$ac_prog_cc_stdc = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C11 features" >&5
+printf %s "checking for $CC option to enable C11 features... " >&6; }
+if test ${ac_cv_prog_cc_c11+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_prog_cc_c11=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_c_conftest_c11_program
+_ACEOF
+for ac_arg in '' -std=gnu11
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_c11=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+  test "x$ac_cv_prog_cc_c11" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+fi
+
+if test "x$ac_cv_prog_cc_c11" = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf "%s\n" "unsupported" >&6; }
+else $as_nop
+  if test "x$ac_cv_prog_cc_c11" = x
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf "%s\n" "none needed" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c11" >&5
+printf "%s\n" "$ac_cv_prog_cc_c11" >&6; }
+     CC="$CC $ac_cv_prog_cc_c11"
+fi
+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c11
+  ac_prog_cc_stdc=c11
+fi
+fi
+if test x$ac_prog_cc_stdc = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C99 features" >&5
+printf %s "checking for $CC option to enable C99 features... " >&6; }
+if test ${ac_cv_prog_cc_c99+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_prog_cc_c99=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_c_conftest_c99_program
+_ACEOF
+for ac_arg in '' -std=gnu99 -std=c99 -c99 -qlanglvl=extc1x -qlanglvl=extc99 -AC99 -D_STDC_C99=
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_c99=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+  test "x$ac_cv_prog_cc_c99" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+fi
+
+if test "x$ac_cv_prog_cc_c99" = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf "%s\n" "unsupported" >&6; }
+else $as_nop
+  if test "x$ac_cv_prog_cc_c99" = x
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf "%s\n" "none needed" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5
+printf "%s\n" "$ac_cv_prog_cc_c99" >&6; }
+     CC="$CC $ac_cv_prog_cc_c99"
+fi
+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c99
+  ac_prog_cc_stdc=c99
+fi
+fi
+if test x$ac_prog_cc_stdc = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C89 features" >&5
+printf %s "checking for $CC option to enable C89 features... " >&6; }
+if test ${ac_cv_prog_cc_c89+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_c_conftest_c89_program
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+  test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+fi
+
+if test "x$ac_cv_prog_cc_c89" = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf "%s\n" "unsupported" >&6; }
+else $as_nop
+  if test "x$ac_cv_prog_cc_c89" = x
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf "%s\n" "none needed" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+printf "%s\n" "$ac_cv_prog_cc_c89" >&6; }
+     CC="$CC $ac_cv_prog_cc_c89"
+fi
+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c89
+  ac_prog_cc_stdc=c89
+fi
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC understands -c and -o together" >&5
+printf %s "checking whether $CC understands -c and -o together... " >&6; }
+if test ${am_cv_prog_cc_c_o+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+  # Make sure it works both with $CC and with simple cc.
+  # Following AC_PROG_CC_C_O, we do the test twice because some
+  # compilers refuse to overwrite an existing .o file with -o,
+  # though they will create one.
+  am_cv_prog_cc_c_o=yes
+  for am_i in 1 2; do
+    if { echo "$as_me:$LINENO: $CC -c conftest.$ac_ext -o conftest2.$ac_objext" >&5
+   ($CC -c conftest.$ac_ext -o conftest2.$ac_objext) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); } \
+         && test -f conftest2.$ac_objext; then
+      : OK
+    else
+      am_cv_prog_cc_c_o=no
+      break
+    fi
+  done
+  rm -f core conftest*
+  unset am_i
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $am_cv_prog_cc_c_o" >&5
+printf "%s\n" "$am_cv_prog_cc_c_o" >&6; }
+if test "$am_cv_prog_cc_c_o" != yes; then
+   # Losing compiler, so override with the script.
+   # FIXME: It is wrong to rewrite CC.
+   # But if we don't then we get into trouble of one sort or another.
+   # A longer-term fix would be to have automake use am__CC in this case,
+   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
+   CC="$am_aux_dir/compile $CC"
+fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler is clang" >&5
+printf %s "checking whether the compiler is clang... " >&6; }
+if test ${gl_cv_compiler_clang+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+                 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+           #ifdef __clang__
+           barfbarf
+           #endif
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_compiler_clang=no
+else $as_nop
+  gl_cv_compiler_clang=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_compiler_clang" >&5
+printf "%s\n" "$gl_cv_compiler_clang" >&6; }
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for compiler option needed when checking for declarations" >&5
+printf %s "checking for compiler option needed when checking for declarations... " >&6; }
+if test ${gl_cv_compiler_check_decl_option+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test $gl_cv_compiler_clang = yes; then
+                     save_ac_compile="$ac_compile"
+       ac_compile="$ac_compile -Werror=implicit-function-declaration"
+                     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_compiler_check_decl_option='-Werror=implicit-function-declaration'
+else $as_nop
+  gl_cv_compiler_check_decl_option=none
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+       ac_compile="$save_ac_compile"
+     else
+       gl_cv_compiler_check_decl_option=none
+     fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_compiler_check_decl_option" >&5
+printf "%s\n" "$gl_cv_compiler_check_decl_option" >&6; }
+  if test "x$gl_cv_compiler_check_decl_option" != xnone; then
+    ac_compile_for_check_decl="$ac_compile $gl_cv_compiler_check_decl_option"
+  else
+    ac_compile_for_check_decl="$ac_compile"
+  fi
+
+DEPDIR="${am__leading_dot}deps"
+
+ac_config_commands="$ac_config_commands depfiles"
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} supports the include directive" >&5
+printf %s "checking whether ${MAKE-make} supports the include directive... " >&6; }
+cat > confinc.mk << 'END'
+am__doit:
+	@echo this is the am__doit target >confinc.out
+.PHONY: am__doit
+END
+am__include="#"
+am__quote=
+# BSD make does it like this.
+echo '.include "confinc.mk" # ignored' > confmf.BSD
+# Other make implementations (GNU, Solaris 10, AIX) do it like this.
+echo 'include confinc.mk # ignored' > confmf.GNU
+_am_result=no
+for s in GNU BSD; do
+  { echo "$as_me:$LINENO: ${MAKE-make} -f confmf.$s && cat confinc.out" >&5
+   (${MAKE-make} -f confmf.$s && cat confinc.out) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); }
+  case $?:`cat confinc.out 2>/dev/null` in #(
+  '0:this is the am__doit target') :
+    case $s in #(
+  BSD) :
+    am__include='.include' am__quote='"' ;; #(
+  *) :
+    am__include='include' am__quote='' ;;
+esac ;; #(
+  *) :
+     ;;
+esac
+  if test "$am__include" != "#"; then
+    _am_result="yes ($s style)"
+    break
+  fi
+done
+rm -f confinc.* confmf.*
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: ${_am_result}" >&5
+printf "%s\n" "${_am_result}" >&6; }
+
+# Check whether --enable-dependency-tracking was given.
+if test ${enable_dependency_tracking+y}
+then :
+  enableval=$enable_dependency_tracking;
+fi
+
+if test "x$enable_dependency_tracking" != xno; then
+  am_depcomp="$ac_aux_dir/depcomp"
+  AMDEPBACKSLASH='\'
+  am__nodep='_no'
+fi
+ if test "x$enable_dependency_tracking" != xno; then
+  AMDEP_TRUE=
+  AMDEP_FALSE='#'
+else
+  AMDEP_TRUE='#'
+  AMDEP_FALSE=
+fi
+
+
+
+depcc="$CC"   am_compiler_list=
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking dependency style of $depcc" >&5
+printf %s "checking dependency style of $depcc... " >&6; }
+if test ${am_cv_CC_dependencies_compiler_type+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+  # We make a subdir and do the tests there.  Otherwise we can end up
+  # making bogus files that we don't know about and never remove.  For
+  # instance it was reported that on HP-UX the gcc test will end up
+  # making a dummy file named 'D' -- because '-MD' means "put the output
+  # in D".
+  rm -rf conftest.dir
+  mkdir conftest.dir
+  # Copy depcomp to subdir because otherwise we won't find it if we're
+  # using a relative directory.
+  cp "$am_depcomp" conftest.dir
+  cd conftest.dir
+  # We will build objects and dependencies in a subdirectory because
+  # it helps to detect inapplicable dependency modes.  For instance
+  # both Tru64's cc and ICC support -MD to output dependencies as a
+  # side effect of compilation, but ICC will put the dependencies in
+  # the current directory while Tru64 will put them in the object
+  # directory.
+  mkdir sub
+
+  am_cv_CC_dependencies_compiler_type=none
+  if test "$am_compiler_list" = ""; then
+     am_compiler_list=`sed -n 's/^#*\([a-zA-Z0-9]*\))$/\1/p' < ./depcomp`
+  fi
+  am__universal=false
+  case " $depcc " in #(
+     *\ -arch\ *\ -arch\ *) am__universal=true ;;
+     esac
+
+  for depmode in $am_compiler_list; do
+    # Setup a source with many dependencies, because some compilers
+    # like to wrap large dependency lists on column 80 (with \), and
+    # we should not choose a depcomp mode which is confused by this.
+    #
+    # We need to recreate these files for each test, as the compiler may
+    # overwrite some of them when testing with obscure command lines.
+    # This happens at least with the AIX C compiler.
+    : > sub/conftest.c
+    for i in 1 2 3 4 5 6; do
+      echo '#include "conftst'$i'.h"' >> sub/conftest.c
+      # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
+      # Solaris 10 /bin/sh.
+      echo '/* dummy */' > sub/conftst$i.h
+    done
+    echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+    # We check with '-c' and '-o' for the sake of the "dashmstdout"
+    # mode.  It turns out that the SunPro C++ compiler does not properly
+    # handle '-M -o', and we need to detect this.  Also, some Intel
+    # versions had trouble with output in subdirs.
+    am__obj=sub/conftest.${OBJEXT-o}
+    am__minus_obj="-o $am__obj"
+    case $depmode in
+    gcc)
+      # This depmode causes a compiler race in universal mode.
+      test "$am__universal" = false || continue
+      ;;
+    nosideeffect)
+      # After this tag, mechanisms are not by side-effect, so they'll
+      # only be used when explicitly requested.
+      if test "x$enable_dependency_tracking" = xyes; then
+	continue
+      else
+	break
+      fi
+      ;;
+    msvc7 | msvc7msys | msvisualcpp | msvcmsys)
+      # This compiler won't grok '-c -o', but also, the minuso test has
+      # not run yet.  These depmodes are late enough in the game, and
+      # so weak that their functioning should not be impacted.
+      am__obj=conftest.${OBJEXT-o}
+      am__minus_obj=
+      ;;
+    none) break ;;
+    esac
+    if depmode=$depmode \
+       source=sub/conftest.c object=$am__obj \
+       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+       $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+         >/dev/null 2>conftest.err &&
+       grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+       ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+      # icc doesn't choke on unknown options, it will just issue warnings
+      # or remarks (even with -Werror).  So we grep stderr for any message
+      # that says an option was ignored or not supported.
+      # When given -MP, icc 7.0 and 7.1 complain thusly:
+      #   icc: Command line warning: ignoring option '-M'; no argument required
+      # The diagnosis changed in icc 8.0:
+      #   icc: Command line remark: option '-MP' not supported
+      if (grep 'ignoring option' conftest.err ||
+          grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+        am_cv_CC_dependencies_compiler_type=$depmode
+        break
+      fi
+    fi
+  done
+
+  cd ..
+  rm -rf conftest.dir
+else
+  am_cv_CC_dependencies_compiler_type=none
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $am_cv_CC_dependencies_compiler_type" >&5
+printf "%s\n" "$am_cv_CC_dependencies_compiler_type" >&6; }
+CCDEPMODE=depmode=$am_cv_CC_dependencies_compiler_type
+
+ if
+  test "x$enable_dependency_tracking" != xno \
+  && test "$am_cv_CC_dependencies_compiler_type" = gcc3; then
+  am__fastdepCC_TRUE=
+  am__fastdepCC_FALSE='#'
+else
+  am__fastdepCC_TRUE='#'
+  am__fastdepCC_FALSE=
+fi
+
+
+
+ac_header= ac_cache=
+for ac_item in $ac_header_c_list
+do
+  if test $ac_cache; then
+    ac_fn_c_check_header_compile "$LINENO" $ac_header ac_cv_header_$ac_cache "$ac_includes_default"
+    if eval test \"x\$ac_cv_header_$ac_cache\" = xyes; then
+      printf "%s\n" "#define $ac_item 1" >> confdefs.h
+    fi
+    ac_header= ac_cache=
+  elif test $ac_header; then
+    ac_cache=$ac_item
+  else
+    ac_header=$ac_item
+  fi
+done
+
+
+
+
+
+
+
+
+if test $ac_cv_header_stdlib_h = yes && test $ac_cv_header_string_h = yes
+then :
+
+printf "%s\n" "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether it is safe to define __EXTENSIONS__" >&5
+printf %s "checking whether it is safe to define __EXTENSIONS__... " >&6; }
+if test ${ac_cv_safe_to_define___extensions__+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#         define __EXTENSIONS__ 1
+          $ac_includes_default
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_safe_to_define___extensions__=yes
+else $as_nop
+  ac_cv_safe_to_define___extensions__=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_safe_to_define___extensions__" >&5
+printf "%s\n" "$ac_cv_safe_to_define___extensions__" >&6; }
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether _XOPEN_SOURCE should be defined" >&5
+printf %s "checking whether _XOPEN_SOURCE should be defined... " >&6; }
+if test ${ac_cv_should_define__xopen_source+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_should_define__xopen_source=no
+    if test $ac_cv_header_wchar_h = yes
+then :
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+          #include <wchar.h>
+          mbstate_t x;
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+            #define _XOPEN_SOURCE 500
+            #include <wchar.h>
+            mbstate_t x;
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_should_define__xopen_source=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_should_define__xopen_source" >&5
+printf "%s\n" "$ac_cv_should_define__xopen_source" >&6; }
+
+  printf "%s\n" "#define _ALL_SOURCE 1" >>confdefs.h
+
+  printf "%s\n" "#define _DARWIN_C_SOURCE 1" >>confdefs.h
+
+  printf "%s\n" "#define _GNU_SOURCE 1" >>confdefs.h
+
+  printf "%s\n" "#define _HPUX_ALT_XOPEN_SOCKET_API 1" >>confdefs.h
+
+  printf "%s\n" "#define _NETBSD_SOURCE 1" >>confdefs.h
+
+  printf "%s\n" "#define _OPENBSD_SOURCE 1" >>confdefs.h
+
+  printf "%s\n" "#define _POSIX_PTHREAD_SEMANTICS 1" >>confdefs.h
+
+  printf "%s\n" "#define __STDC_WANT_IEC_60559_ATTRIBS_EXT__ 1" >>confdefs.h
+
+  printf "%s\n" "#define __STDC_WANT_IEC_60559_BFP_EXT__ 1" >>confdefs.h
+
+  printf "%s\n" "#define __STDC_WANT_IEC_60559_DFP_EXT__ 1" >>confdefs.h
+
+  printf "%s\n" "#define __STDC_WANT_IEC_60559_FUNCS_EXT__ 1" >>confdefs.h
+
+  printf "%s\n" "#define __STDC_WANT_IEC_60559_TYPES_EXT__ 1" >>confdefs.h
+
+  printf "%s\n" "#define __STDC_WANT_LIB_EXT2__ 1" >>confdefs.h
+
+  printf "%s\n" "#define __STDC_WANT_MATH_SPEC_FUNCS__ 1" >>confdefs.h
+
+  printf "%s\n" "#define _TANDEM_SOURCE 1" >>confdefs.h
+
+  if test $ac_cv_header_minix_config_h = yes
+then :
+  MINIX=yes
+    printf "%s\n" "#define _MINIX 1" >>confdefs.h
+
+    printf "%s\n" "#define _POSIX_SOURCE 1" >>confdefs.h
+
+    printf "%s\n" "#define _POSIX_1_SOURCE 2" >>confdefs.h
+
+else $as_nop
+  MINIX=
+fi
+  if test $ac_cv_safe_to_define___extensions__ = yes
+then :
+  printf "%s\n" "#define __EXTENSIONS__ 1" >>confdefs.h
+
+fi
+  if test $ac_cv_should_define__xopen_source = yes
+then :
+  printf "%s\n" "#define _XOPEN_SOURCE 500" >>confdefs.h
+
+fi
+
+
+
+
+
+  case "$host_os" in
+    openbsd*)
+
+printf "%s\n" "#define _ISOC11_SOURCE 1" >>confdefs.h
+
+      ;;
+  esac
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
+printf %s "checking how to run the C preprocessor... " >&6; }
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+  if test ${ac_cv_prog_CPP+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+      # Double quotes because $CC needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" cpp /lib/cpp
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"
+then :
+
+else $as_nop
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"
+then :
+  # Broken: success on invalid input.
+continue
+else $as_nop
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok
+then :
+  break
+fi
+
+    done
+    ac_cv_prog_CPP=$CPP
+
+fi
+  CPP=$ac_cv_prog_CPP
+else
+  ac_cv_prog_CPP=$CPP
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
+printf "%s\n" "$CPP" >&6; }
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"
+then :
+
+else $as_nop
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"
+then :
+  # Broken: success on invalid input.
+continue
+else $as_nop
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok
+then :
+
+else $as_nop
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+printf %s "checking for grep that handles long lines and -e... " >&6; }
+if test ${ac_cv_path_GREP+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -z "$GREP"; then
+  ac_path_GREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_prog in grep ggrep
+   do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_GREP="$as_dir$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_GREP" || continue
+# Check for GNU ac_path_GREP and select it if it is found.
+  # Check for GNU $ac_path_GREP
+case `"$ac_path_GREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
+*)
+  ac_count=0
+  printf %s 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    printf "%s\n" 'GREP' >> "conftest.nl"
+    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_GREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_GREP="$ac_path_GREP"
+      ac_path_GREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_GREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_GREP"; then
+    as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_GREP=$GREP
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+printf "%s\n" "$ac_cv_path_GREP" >&6; }
+ GREP="$ac_cv_path_GREP"
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+printf %s "checking for egrep... " >&6; }
+if test ${ac_cv_path_EGREP+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
+   then ac_cv_path_EGREP="$GREP -E"
+   else
+     if test -z "$EGREP"; then
+  ac_path_EGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_prog in egrep
+   do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_EGREP="$as_dir$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_EGREP" || continue
+# Check for GNU ac_path_EGREP and select it if it is found.
+  # Check for GNU $ac_path_EGREP
+case `"$ac_path_EGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
+*)
+  ac_count=0
+  printf %s 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    printf "%s\n" 'EGREP' >> "conftest.nl"
+    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_EGREP="$ac_path_EGREP"
+      ac_path_EGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_EGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_EGREP"; then
+    as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_EGREP=$EGREP
+fi
+
+   fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+printf "%s\n" "$ac_cv_path_EGREP" >&6; }
+ EGREP="$ac_cv_path_EGREP"
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for Minix Amsterdam compiler" >&5
+printf %s "checking for Minix Amsterdam compiler... " >&6; }
+if test ${gl_cv_c_amsterdam_compiler+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#ifdef __ACK__
+Amsterdam
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Amsterdam" >/dev/null 2>&1
+then :
+  gl_cv_c_amsterdam_compiler=yes
+else $as_nop
+  gl_cv_c_amsterdam_compiler=no
+fi
+rm -rf conftest*
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_c_amsterdam_compiler" >&5
+printf "%s\n" "$gl_cv_c_amsterdam_compiler" >&6; }
+
+      if test $gl_cv_c_amsterdam_compiler = yes; then
+    if test -z "$AR"; then
+      AR='cc -c.a'
+    fi
+    if test -z "$ARFLAGS"; then
+      ARFLAGS='-o'
+    fi
+  else
+                                                :
+  fi
+
+        if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ar; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_AR+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$AR"; then
+  ac_cv_prog_AR="$AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_AR="${ac_tool_prefix}ar"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AR=$ac_cv_prog_AR
+if test -n "$AR"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $AR" >&5
+printf "%s\n" "$AR" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_AR"; then
+  ac_ct_AR=$AR
+  # Extract the first word of "ar", so it can be a program name with args.
+set dummy ar; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_AR+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_AR"; then
+  ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_AR="ar"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AR=$ac_cv_prog_ac_ct_AR
+if test -n "$ac_ct_AR"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5
+printf "%s\n" "$ac_ct_AR" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_AR" = x; then
+    AR="ar"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    AR=$ac_ct_AR
+  fi
+else
+  AR="$ac_cv_prog_AR"
+fi
+
+  if test -z "$ARFLAGS"; then
+    ARFLAGS='cr'
+  fi
+
+
+
+  if test -z "$RANLIB"; then
+    if test $gl_cv_c_amsterdam_compiler = yes; then
+      RANLIB=':'
+    else
+            if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_RANLIB+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
+printf "%s\n" "$RANLIB" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+  ac_ct_RANLIB=$RANLIB
+  # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_RANLIB+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_RANLIB"; then
+  ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_RANLIB="ranlib"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
+printf "%s\n" "$ac_ct_RANLIB" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_RANLIB" = x; then
+    RANLIB=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    RANLIB=$ac_ct_RANLIB
+  fi
+else
+  RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+    fi
+  fi
+
+
+
+
+
+
+  # IEEE behaviour is the default on all CPUs except Alpha and SH
+  # (according to the test results of Bruno Haible's ieeefp/fenv_default.m4
+  # and the GCC 4.1.2 manual).
+  case "$host_cpu" in
+    alpha*)
+      # On Alpha systems, a compiler option provides the behaviour.
+      # See the ieee(3) manual page, also available at
+      # <https://backdrift.org/man/tru64/man3/ieee.3.html>
+      if test -n "$GCC"; then
+        # GCC has the option -mieee.
+        # For full IEEE compliance (rarely needed), use option -mieee-with-inexact.
+        CPPFLAGS="$CPPFLAGS -mieee"
+      else
+        # Compaq (ex-DEC) C has the option -ieee, equivalent to -ieee_with_no_inexact.
+        # For full IEEE compliance (rarely needed), use option -ieee_with_inexact.
+        CPPFLAGS="$CPPFLAGS -ieee"
+      fi
+      ;;
+    sh*)
+      if test -n "$GCC"; then
+        # GCC has the option -mieee.
+        CPPFLAGS="$CPPFLAGS -mieee"
+      fi
+      ;;
+  esac
+
+# Check whether --enable-largefile was given.
+if test ${enable_largefile+y}
+then :
+  enableval=$enable_largefile;
+fi
+
+if test "$enable_largefile" != no
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for special C compiler options needed for large files" >&5
+printf %s "checking for special C compiler options needed for large files... " >&6; }
+if test ${ac_cv_sys_largefile_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_sys_largefile_CC=no
+     if test "$GCC" != yes; then
+       ac_save_CC=$CC
+       while :; do
+         # IRIX 6.2 and later do not support large files by default,
+         # so use the C compiler's -n32 option if that helps.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 31 << 31) - 1 + ((off_t) 1 << 31 << 31))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+         if ac_fn_c_try_compile "$LINENO"
+then :
+  break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+         CC="$CC -n32"
+         if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_sys_largefile_CC=' -n32'; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+         break
+       done
+       CC=$ac_save_CC
+       rm -f conftest.$ac_ext
+    fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_largefile_CC" >&5
+printf "%s\n" "$ac_cv_sys_largefile_CC" >&6; }
+  if test "$ac_cv_sys_largefile_CC" != no; then
+    CC=$CC$ac_cv_sys_largefile_CC
+  fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for _FILE_OFFSET_BITS value needed for large files" >&5
+printf %s "checking for _FILE_OFFSET_BITS value needed for large files... " >&6; }
+if test ${ac_cv_sys_file_offset_bits+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  while :; do
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 31 << 31) - 1 + ((off_t) 1 << 31 << 31))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_sys_file_offset_bits=no; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#undef _FILE_OFFSET_BITS
+#define _FILE_OFFSET_BITS 64
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 31 << 31) - 1 + ((off_t) 1 << 31 << 31))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_sys_file_offset_bits=64; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  ac_cv_sys_file_offset_bits=unknown
+  break
+done
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_file_offset_bits" >&5
+printf "%s\n" "$ac_cv_sys_file_offset_bits" >&6; }
+case $ac_cv_sys_file_offset_bits in #(
+  no | unknown) ;;
+  *)
+printf "%s\n" "#define _FILE_OFFSET_BITS $ac_cv_sys_file_offset_bits" >>confdefs.h
+;;
+esac
+rm -rf conftest*
+  case $ac_cv_sys_file_offset_bits in #(
+  unknown) :
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for _LARGE_FILES value needed for large files" >&5
+printf %s "checking for _LARGE_FILES value needed for large files... " >&6; }
+if test ${ac_cv_sys_large_files+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  while :; do
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 31 << 31) - 1 + ((off_t) 1 << 31 << 31))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_sys_large_files=no; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#undef _LARGE_FILES
+#define _LARGE_FILES 1
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 31 << 31) - 1 + ((off_t) 1 << 31 << 31))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_sys_large_files=1; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  ac_cv_sys_large_files=unknown
+  break
+done
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_large_files" >&5
+printf "%s\n" "$ac_cv_sys_large_files" >&6; }
+case $ac_cv_sys_large_files in #(
+  no | unknown) ;;
+  *)
+printf "%s\n" "#define _LARGE_FILES $ac_cv_sys_large_files" >>confdefs.h
+;;
+esac
+rm -rf conftest* ;; #(
+  64) :
+
+ # Check whether --enable-year2038 was given.
+if test ${enable_year2038+y}
+then :
+  enableval=$enable_year2038;
+fi
+
+ if test "$enable_year2038" != no
+then :
+
+                            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for time_t past the year 2038" >&5
+printf %s "checking for time_t past the year 2038... " >&6; }
+if test ${gl_cv_type_time_t_y2038+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+  #include <time.h>
+  /* Check that time_t can represent 2**32 - 1 correctly.  */
+  #define LARGE_TIME_T \\
+    ((time_t) (((time_t) 1 << 30) - 1 + 3 * ((time_t) 1 << 30)))
+  int verify_time_t_range[(LARGE_TIME_T / 65537 == 65535
+                           && LARGE_TIME_T % 65537 == 0)
+                          ? 1 : -1];
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_type_time_t_y2038=yes
+else $as_nop
+  gl_cv_type_time_t_y2038=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_time_t_y2038" >&5
+printf "%s\n" "$gl_cv_type_time_t_y2038" >&6; }
+  if test "$gl_cv_type_time_t_y2038" = no; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for 64-bit time_t with _TIME_BITS=64" >&5
+printf %s "checking for 64-bit time_t with _TIME_BITS=64... " >&6; }
+if test ${gl_cv_type_time_t_bits_macro+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#define _TIME_BITS 64
+                           #define _FILE_OFFSET_BITS 64
+
+  #include <time.h>
+  /* Check that time_t can represent 2**32 - 1 correctly.  */
+  #define LARGE_TIME_T \\
+    ((time_t) (((time_t) 1 << 30) - 1 + 3 * ((time_t) 1 << 30)))
+  int verify_time_t_range[(LARGE_TIME_T / 65537 == 65535
+                           && LARGE_TIME_T % 65537 == 0)
+                          ? 1 : -1];
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_type_time_t_bits_macro=yes
+else $as_nop
+  gl_cv_type_time_t_bits_macro=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_time_t_bits_macro" >&5
+printf "%s\n" "$gl_cv_type_time_t_bits_macro" >&6; }
+    if test "$gl_cv_type_time_t_bits_macro" = yes; then
+
+printf "%s\n" "#define _TIME_BITS 64" >>confdefs.h
+
+
+printf "%s\n" "#define _FILE_OFFSET_BITS 64" >>confdefs.h
+
+      gl_cv_type_time_t_y2038=yes
+    fi
+  fi
+  if test $gl_cv_type_time_t_y2038 = no; then
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef _USE_32BIT_TIME_T
+             int ok;
+           #else
+             error fail
+           #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "The 'time_t' type stops working after January 2038.
+          Remove _USE_32BIT_TIME_T from the compiler flags.
+See \`config.log' for more details" "$LINENO" 5; }
+else $as_nop
+  # If not cross-compiling and  says we should check,
+       # and 'touch' works with a large timestamp, then evidently wider time_t
+       # is desired and supported, so fail and ask the builder to fix the
+       # problem.  Otherwise, just warn the builder.
+
+       if test "$gl_warned_about_y2038" != yes; then
+         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: The 'time_t' type stops working after January 2038,
+            and this package needs a wider 'time_t' type
+            if there is any way to access timestamps after that.
+            Configure with 'CC=\"${CC} -m64\"' perhaps?" >&5
+printf "%s\n" "$as_me: WARNING: The 'time_t' type stops working after January 2038,
+            and this package needs a wider 'time_t' type
+            if there is any way to access timestamps after that.
+            Configure with 'CC=\"${CC} -m64\"' perhaps?" >&2;}
+         gl_warned_about_y2038=yes
+       fi
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  fi
+fi
+ ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+
+  case "$host_os" in
+    mingw*)
+
+printf "%s\n" "#define __MINGW_USE_VC2005_COMPAT 1" >>confdefs.h
+
+      ;;
+  esac
+
+
+
+
+
+
+
+  # Check whether --enable-threads was given.
+if test ${enable_threads+y}
+then :
+  enableval=$enable_threads; gl_use_threads=$enableval
+else $as_nop
+  if test -n "$gl_use_threads_default"; then
+       gl_use_threads="$gl_use_threads_default"
+     else
+       case "$host_os" in
+                                    osf*) gl_use_threads=no ;;
+                                    cygwin*)
+               case `uname -r` in
+                 1.[0-5].*) gl_use_threads=no ;;
+                 *)         gl_use_threads=yes ;;
+               esac
+               ;;
+                  mingw*)
+               case "$gl_use_winpthreads_default" in
+                 yes) gl_use_threads=posix ;;
+                 no)  gl_use_threads=windows ;;
+                 *)   gl_use_threads=yes ;;
+               esac
+               ;;
+         *)    gl_use_threads=yes ;;
+       esac
+     fi
+
+fi
+
+  if test "$gl_use_threads" = yes \
+     || test "$gl_use_threads" = isoc \
+     || test "$gl_use_threads" = posix \
+     || test "$gl_use_threads" = isoc+posix; then
+    # For using <threads.h> or <pthread.h>:
+
+
+  if test -z "$gl_anythreadlib_early_done"; then
+    case "$host_os" in
+      osf*)
+        # On OSF/1, the compiler needs the flag -D_REENTRANT so that it
+        # groks <pthread.h>. cc also understands the flag -pthread, but
+        # we don't use it because 1. gcc-2.95 doesn't understand -pthread,
+        # 2. putting a flag into CPPFLAGS that has an effect on the linker
+        # causes the AC_LINK_IFELSE test below to succeed unexpectedly,
+        # leading to wrong values of LIBTHREAD and LTLIBTHREAD.
+        CPPFLAGS="$CPPFLAGS -D_REENTRANT"
+        ;;
+    esac
+    # Some systems optimize for single-threaded programs by default, and
+    # need special flags to disable these optimizations. For example, the
+    # definition of 'errno' in <errno.h>.
+    case "$host_os" in
+      aix* | freebsd*) CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE" ;;
+      solaris*) CPPFLAGS="$CPPFLAGS -D_REENTRANT" ;;
+    esac
+    gl_anythreadlib_early_done=done
+  fi
+
+  fi
+
+
+
+  # Pre-early section.
+
+
+
+
+  # Code from module absolute-header:
+  # Code from module accept:
+  # Code from module accept-tests:
+  # Code from module alignof:
+  # Code from module alignof-tests:
+  # Code from module alloca:
+  # Code from module alloca-opt:
+  # Code from module alloca-opt-tests:
+  # Code from module announce-gen:
+  # Code from module argmatch:
+  # Code from module argmatch-tests:
+  # Code from module arpa_inet:
+  # Code from module arpa_inet-tests:
+  # Code from module assert:
+  # Code from module assure:
+  # Code from module at-internal:
+  # Code from module attribute:
+  # Code from module basename-lgpl:
+  # Code from module binary-io:
+  # Code from module binary-io-tests:
+  # Code from module bind:
+  # Code from module bind-tests:
+  # Code from module bitrotate:
+  # Code from module bitrotate-tests:
+  # Code from module btowc:
+  # Code from module btowc-tests:
+  # Code from module builtin-expect:
+  # Code from module c-ctype:
+  # Code from module c-ctype-tests:
+  # Code from module c-stack:
+  # Code from module c-stack-tests:
+  # Code from module c-strcase:
+  # Code from module c-strcase-tests:
+  # Code from module c-strcaseeq:
+  # Code from module c99:
+  # Code from module calloc-gnu:
+  # Code from module calloc-gnu-tests:
+  # Code from module calloc-posix:
+  # Code from module chdir:
+  # Code from module chdir-long:
+  # Code from module chdir-tests:
+  # Code from module cloexec:
+  # Code from module cloexec-tests:
+  # Code from module close:
+  # Code from module close-stream:
+  # Code from module close-tests:
+  # Code from module closedir:
+  # Code from module closeout:
+  # Code from module configmake:
+  # Code from module connect:
+  # Code from module connect-tests:
+  # Code from module ctype:
+  # Code from module ctype-tests:
+  # Code from module cycle-check:
+  # Code from module d-ino:
+  # Code from module d-type:
+  # Code from module dev-ino:
+  # Code from module dfa:
+  # Code from module dfa-tests:
+  # Code from module dirent:
+  # Code from module dirent-tests:
+  # Code from module dirfd:
+  # Code from module dirname-lgpl:
+  # Code from module do-release-commit-and-tag:
+  # Code from module double-slash-root:
+  # Code from module dup:
+  # Code from module dup-tests:
+  # Code from module dup2:
+  # Code from module dup2-tests:
+  # Code from module dynarray:
+  # Code from module dynarray-tests:
+  # Code from module environ:
+  # Code from module environ-tests:
+  # Code from module errno:
+  # Code from module errno-tests:
+  # Code from module error:
+  # Code from module exclude:
+  # Code from module exclude-tests:
+  # Code from module exitfail:
+  # Code from module extensions:
+  # Code from module extern-inline:
+  # Code from module fchdir:
+  # Code from module fchdir-tests:
+  # Code from module fcntl:
+  # Code from module fcntl-h:
+  # Code from module fcntl-h-tests:
+  # Code from module fcntl-safer:
+  # Code from module fcntl-safer-tests:
+  # Code from module fcntl-tests:
+  # Code from module fd-hook:
+  # Code from module fd-safer-flag:
+  # Code from module fdl:
+  # Code from module fdopen:
+  # Code from module fdopen-tests:
+  # Code from module fdopendir:
+  # Code from module fdopendir-tests:
+  # Code from module fgetc-tests:
+  # Code from module filename:
+  # Code from module filenamecat-lgpl:
+  # Code from module flexmember:
+  # Code from module float:
+  # Code from module float-tests:
+  # Code from module fnmatch:
+  # Code from module fnmatch-h:
+  # Code from module fnmatch-h-tests:
+  # Code from module fnmatch-tests:
+  # Code from module fopen:
+  # Code from module fopen-gnu:
+  # Code from module fopen-gnu-tests:
+  # Code from module fopen-tests:
+  # Code from module fpending:
+  # Code from module fpending-tests:
+  # Code from module fpieee:
+
+  # Code from module fpucw:
+  # Code from module fputc-tests:
+  # Code from module fread-tests:
+  # Code from module free-posix:
+  # Code from module free-posix-tests:
+  # Code from module fstat:
+  # Code from module fstat-tests:
+  # Code from module fstatat:
+  # Code from module fstatat-tests:
+  # Code from module ftruncate:
+  # Code from module ftruncate-tests:
+  # Code from module fts:
+  # Code from module fwrite-tests:
+  # Code from module gendocs:
+  # Code from module getcwd-lgpl:
+  # Code from module getcwd-lgpl-tests:
+  # Code from module getdtablesize:
+  # Code from module getdtablesize-tests:
+  # Code from module getopt-gnu:
+  # Code from module getopt-gnu-tests:
+  # Code from module getopt-posix:
+  # Code from module getopt-posix-tests:
+  # Code from module getpagesize:
+  # Code from module getprogname:
+  # Code from module getprogname-tests:
+  # Code from module gettext-h:
+  # Code from module gettimeofday:
+  # Code from module gettimeofday-tests:
+  # Code from module git-version-gen:
+  # Code from module gitlog-to-changelog:
+  # Code from module gnu-web-doc-update:
+  # Code from module gnumakefile:
+  # Code from module gnupload:
+  # Code from module gperf:
+  # Code from module hard-locale:
+  # Code from module hard-locale-tests:
+  # Code from module hash:
+  # Code from module hash-pjw:
+  # Code from module hash-tests:
+  # Code from module havelib:
+  # Code from module host-cpu-c-abi:
+  # Code from module i-ring:
+  # Code from module i-ring-tests:
+  # Code from module ialloc:
+  # Code from module iconv:
+  # Code from module iconv-h:
+  # Code from module iconv-h-tests:
+  # Code from module iconv-tests:
+  # Code from module iconv_open:
+  # Code from module idx:
+  # Code from module ignore-value:
+  # Code from module ignore-value-tests:
+  # Code from module include_next:
+  # Code from module inet_pton:
+  # Code from module inet_pton-tests:
+  # Code from module inline:
+  # Code from module intprops:
+  # Code from module intprops-tests:
+  # Code from module inttostr:
+  # Code from module inttostr-tests:
+  # Code from module inttypes:
+  # Code from module inttypes-incomplete:
+  # Code from module inttypes-tests:
+  # Code from module ioctl:
+  # Code from module ioctl-tests:
+  # Code from module isatty:
+  # Code from module isatty-tests:
+  # Code from module isblank:
+  # Code from module isblank-tests:
+  # Code from module iswblank:
+  # Code from module iswblank-tests:
+  # Code from module iswctype:
+  # Code from module iswdigit:
+  # Code from module iswdigit-tests:
+  # Code from module iswxdigit:
+  # Code from module iswxdigit-tests:
+  # Code from module langinfo:
+  # Code from module langinfo-tests:
+  # Code from module largefile:
+
+
+  # Code from module libc-config:
+  # Code from module limits-h:
+  # Code from module limits-h-tests:
+  # Code from module listen:
+  # Code from module listen-tests:
+  # Code from module localcharset:
+  # Code from module localcharset-tests:
+  # Code from module locale:
+  # Code from module locale-tests:
+  # Code from module localeconv:
+  # Code from module localeconv-tests:
+  # Code from module localename:
+  # Code from module localename-tests:
+  # Code from module lock:
+  # Code from module lseek:
+  # Code from module lseek-tests:
+  # Code from module lstat:
+  # Code from module lstat-tests:
+  # Code from module maintainer-makefile:
+  # Code from module malloc-gnu:
+  # Code from module malloc-gnu-tests:
+  # Code from module malloc-posix:
+  # Code from module malloca:
+  # Code from module malloca-tests:
+  # Code from module manywarnings:
+  # Code from module mbchar:
+  # Code from module mbiter:
+  # Code from module mbrlen:
+  # Code from module mbrtowc:
+  # Code from module mbscasecmp:
+  # Code from module mbscasecmp-tests:
+  # Code from module mbsinit:
+  # Code from module mbsinit-tests:
+  # Code from module mbslen:
+  # Code from module mbsrtowcs:
+  # Code from module mbsrtowcs-tests:
+  # Code from module mbsstr:
+  # Code from module mbsstr-tests:
+  # Code from module mbtowc:
+  # Code from module mbuiter:
+  # Code from module memchr:
+  # Code from module memchr-tests:
+  # Code from module memchr2:
+  # Code from module memchr2-tests:
+  # Code from module mempcpy:
+  # Code from module memrchr:
+  # Code from module memrchr-tests:
+  # Code from module minmax:
+  # Code from module msvc-inval:
+  # Code from module msvc-nothrow:
+  # Code from module multiarch:
+  # Code from module nanosleep:
+  # Code from module nanosleep-tests:
+  # Code from module netinet_in:
+  # Code from module netinet_in-tests:
+  # Code from module nl_langinfo:
+  # Code from module nl_langinfo-tests:
+  # Code from module nocrash:
+  # Code from module obstack:
+  # Code from module open:
+  # Code from module open-tests:
+  # Code from module openat:
+  # Code from module openat-die:
+  # Code from module openat-h:
+  # Code from module openat-safer:
+  # Code from module openat-safer-tests:
+  # Code from module openat-tests:
+  # Code from module opendir:
+  # Code from module opendirat:
+  # Code from module pathmax:
+  # Code from module pathmax-tests:
+  # Code from module perl:
+  # Code from module perror:
+  # Code from module perror-tests:
+  # Code from module pipe-posix:
+  # Code from module pipe-posix-tests:
+  # Code from module propername:
+  # Code from module pthread-h:
+
+
+  if test -z "$gl_anythreadlib_early_done"; then
+    case "$host_os" in
+      osf*)
+        # On OSF/1, the compiler needs the flag -D_REENTRANT so that it
+        # groks <pthread.h>. cc also understands the flag -pthread, but
+        # we don't use it because 1. gcc-2.95 doesn't understand -pthread,
+        # 2. putting a flag into CPPFLAGS that has an effect on the linker
+        # causes the AC_LINK_IFELSE test below to succeed unexpectedly,
+        # leading to wrong values of LIBTHREAD and LTLIBTHREAD.
+        CPPFLAGS="$CPPFLAGS -D_REENTRANT"
+        ;;
+    esac
+    # Some systems optimize for single-threaded programs by default, and
+    # need special flags to disable these optimizations. For example, the
+    # definition of 'errno' in <errno.h>.
+    case "$host_os" in
+      aix* | freebsd*) CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE" ;;
+      solaris*) CPPFLAGS="$CPPFLAGS -D_REENTRANT" ;;
+    esac
+    gl_anythreadlib_early_done=done
+  fi
+
+  # Code from module pthread-h-tests:
+  # Code from module pthread-thread:
+  # Code from module pthread-thread-tests:
+  # Code from module pthread_sigmask:
+  # Code from module pthread_sigmask-tests:
+  # Code from module putenv:
+  # Code from module quote:
+  # Code from module quotearg:
+  # Code from module quotearg-simple:
+  # Code from module quotearg-simple-tests:
+  # Code from module raise:
+  # Code from module raise-tests:
+  # Code from module rawmemchr:
+  # Code from module rawmemchr-tests:
+  # Code from module read:
+  # Code from module read-tests:
+  # Code from module readdir:
+  # Code from module readme-release:
+  # Code from module realloc-gnu:
+  # Code from module realloc-gnu-tests:
+  # Code from module realloc-posix:
+  # Code from module reallocarray:
+  # Code from module reallocarray-tests:
+  # Code from module regex:
+  # Code from module regex-tests:
+  # Code from module safe-read:
+  # Code from module same-inode:
+  # Code from module save-cwd:
+  # Code from module sched:
+  # Code from module sched-tests:
+  # Code from module select:
+  # Code from module select-tests:
+  # Code from module setenv:
+  # Code from module setenv-tests:
+  # Code from module setlocale:
+  # Code from module setlocale-null:
+  # Code from module setlocale-null-tests:
+  # Code from module setlocale-tests:
+  # Code from module setsockopt:
+  # Code from module setsockopt-tests:
+  # Code from module sigaction:
+  # Code from module sigaction-tests:
+  # Code from module signal-h:
+  # Code from module signal-h-tests:
+  # Code from module sigprocmask:
+  # Code from module sigprocmask-tests:
+  # Code from module sigsegv:
+  # Code from module sigsegv-tests:
+  # Code from module size_max:
+  # Code from module sleep:
+  # Code from module sleep-tests:
+  # Code from module snippet/_Noreturn:
+  # Code from module snippet/arg-nonnull:
+  # Code from module snippet/c++defs:
+  # Code from module snippet/warn-on-use:
+  # Code from module snprintf:
+  # Code from module snprintf-tests:
+  # Code from module socket:
+  # Code from module socketlib:
+  # Code from module sockets:
+  # Code from module sockets-tests:
+  # Code from module socklen:
+  # Code from module ssize_t:
+  # Code from module stat:
+  # Code from module stat-tests:
+  # Code from module stat-time:
+  # Code from module stat-time-tests:
+  # Code from module std-gnu11:
+  # Code from module stdalign:
+  # Code from module stdalign-tests:
+  # Code from module stdarg:
+
+
+
+  # Code from module stdarg-tests:
+  # Code from module stdbool:
+  # Code from module stdbool-tests:
+  # Code from module stddef:
+  # Code from module stddef-tests:
+  # Code from module stdint:
+  # Code from module stdint-tests:
+  # Code from module stdio:
+  # Code from module stdio-tests:
+  # Code from module stdlib:
+  # Code from module stdlib-tests:
+  # Code from module stpcpy:
+  # Code from module strdup-posix:
+  # Code from module streq:
+  # Code from module strerror:
+  # Code from module strerror-override:
+  # Code from module strerror-tests:
+  # Code from module strerror_r-posix:
+  # Code from module strerror_r-posix-tests:
+  # Code from module striconv:
+  # Code from module striconv-tests:
+  # Code from module string:
+  # Code from module string-tests:
+  # Code from module strnlen:
+  # Code from module strnlen-tests:
+  # Code from module strnlen1:
+  # Code from module strstr:
+  # Code from module strstr-simple:
+  # Code from module strstr-tests:
+  # Code from module strtoimax:
+  # Code from module strtoimax-tests:
+  # Code from module strtoll:
+  # Code from module strtoll-tests:
+  # Code from module strtoull:
+  # Code from module strtoull-tests:
+  # Code from module strtoumax:
+  # Code from module strtoumax-tests:
+  # Code from module symlink:
+  # Code from module symlink-tests:
+  # Code from module sys_ioctl:
+  # Code from module sys_ioctl-tests:
+  # Code from module sys_select:
+  # Code from module sys_select-tests:
+  # Code from module sys_socket:
+  # Code from module sys_socket-tests:
+  # Code from module sys_stat:
+  # Code from module sys_stat-tests:
+  # Code from module sys_time:
+  # Code from module sys_time-tests:
+  # Code from module sys_types:
+  # Code from module sys_types-tests:
+  # Code from module sys_uio:
+  # Code from module sys_uio-tests:
+  # Code from module test-framework-sh:
+  # Code from module test-framework-sh-tests:
+  # Code from module thread:
+  # Code from module thread-optim:
+  # Code from module thread-tests:
+  # Code from module threadlib:
+
+
+
+  # Code from module time:
+  # Code from module time-tests:
+  # Code from module trim:
+  # Code from module unistd:
+  # Code from module unistd-safer:
+  # Code from module unistd-safer-tests:
+  # Code from module unistd-tests:
+  # Code from module unistr/base:
+  # Code from module unistr/u8-mbtoucr:
+  # Code from module unistr/u8-mbtoucr-tests:
+  # Code from module unistr/u8-uctomb:
+  # Code from module unistr/u8-uctomb-tests:
+  # Code from module unitypes:
+  # Code from module uniwidth/base:
+  # Code from module uniwidth/width:
+  # Code from module uniwidth/width-tests:
+  # Code from module unlocked-io:
+  # Code from module unlocked-io-internal:
+  # Code from module unsetenv:
+  # Code from module unsetenv-tests:
+  # Code from module update-copyright:
+  # Code from module useless-if-before-free:
+  # Code from module vasnprintf:
+  # Code from module vasnprintf-tests:
+  # Code from module vc-list-files:
+  # Code from module vc-list-files-tests:
+  # Code from module verify:
+  # Code from module verify-tests:
+  # Code from module version-etc:
+  # Code from module version-etc-fsf:
+  # Code from module version-etc-tests:
+  # Code from module warnings:
+  # Code from module wchar:
+  # Code from module wchar-tests:
+  # Code from module wcrtomb:
+  # Code from module wcrtomb-tests:
+  # Code from module wctob:
+  # Code from module wctomb:
+  # Code from module wctype-h:
+  # Code from module wctype-h-tests:
+  # Code from module wcwidth:
+  # Code from module wcwidth-tests:
+  # Code from module windows-mutex:
+  # Code from module windows-once:
+  # Code from module windows-recmutex:
+  # Code from module windows-rwlock:
+  # Code from module windows-stat-inodes:
+  # Code from module windows-stat-override:
+  # Code from module windows-thread:
+  # Code from module windows-tls:
+  # Code from module wmemchr:
+  # Code from module wmempcpy:
+  # Code from module xalloc:
+  # Code from module xalloc-die:
+  # Code from module xalloc-die-tests:
+  # Code from module xalloc-oversized:
+  # Code from module xbinary-io:
+  # Code from module xsize:
+  # Code from module xstriconv:
+  # Code from module xstrtoimax:
+  # Code from module xstrtoimax-tests:
+  # Code from module xstrtol:
+  # Code from module xstrtol-error:
+  # Code from module xstrtol-tests:
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_RANLIB+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
+printf "%s\n" "$RANLIB" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+  ac_ct_RANLIB=$RANLIB
+  # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_RANLIB+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_RANLIB"; then
+  ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_RANLIB="ranlib"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
+printf "%s\n" "$ac_ct_RANLIB" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_RANLIB" = x; then
+    RANLIB=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    RANLIB=$ac_ct_RANLIB
+  fi
+else
+  RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+
+
+
+
+
+
+
+if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
+	if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args.
+set dummy ${ac_tool_prefix}pkg-config; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_PKG_CONFIG+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case $PKG_CONFIG in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_PKG_CONFIG="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+PKG_CONFIG=$ac_cv_path_PKG_CONFIG
+if test -n "$PKG_CONFIG"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
+printf "%s\n" "$PKG_CONFIG" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_path_PKG_CONFIG"; then
+  ac_pt_PKG_CONFIG=$PKG_CONFIG
+  # Extract the first word of "pkg-config", so it can be a program name with args.
+set dummy pkg-config; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_ac_pt_PKG_CONFIG+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case $ac_pt_PKG_CONFIG in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_ac_pt_PKG_CONFIG="$ac_pt_PKG_CONFIG" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_ac_pt_PKG_CONFIG="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+ac_pt_PKG_CONFIG=$ac_cv_path_ac_pt_PKG_CONFIG
+if test -n "$ac_pt_PKG_CONFIG"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_pt_PKG_CONFIG" >&5
+printf "%s\n" "$ac_pt_PKG_CONFIG" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_pt_PKG_CONFIG" = x; then
+    PKG_CONFIG=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    PKG_CONFIG=$ac_pt_PKG_CONFIG
+  fi
+else
+  PKG_CONFIG="$ac_cv_path_PKG_CONFIG"
+fi
+
+fi
+if test -n "$PKG_CONFIG"; then
+	_pkg_min_version=0.9.0
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking pkg-config is at least version $_pkg_min_version" >&5
+printf %s "checking pkg-config is at least version $_pkg_min_version... " >&6; }
+	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+	else
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+		PKG_CONFIG=""
+	fi
+fi
+
+# grep never invokes mbrtowc or mbrlen on empty input,
+# so don't worry about this common bug,
+# as working around it would merely slow grep down.
+gl_cv_func_mbrtowc_empty_input='assume yes'
+
+ac_fn_c_check_type "$LINENO" "size_t" "ac_cv_type_size_t" "$ac_includes_default"
+if test "x$ac_cv_type_size_t" = xyes
+then :
+
+else $as_nop
+
+printf "%s\n" "#define size_t unsigned int" >>confdefs.h
+
+fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5
+printf %s "checking for an ANSI C-conforming const... " >&6; }
+if test ${ac_cv_c_const+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+#ifndef __cplusplus
+  /* Ultrix mips cc rejects this sort of thing.  */
+  typedef int charset[2];
+  const charset cs = { 0, 0 };
+  /* SunOS 4.1.1 cc rejects this.  */
+  char const *const *pcpcc;
+  char **ppc;
+  /* NEC SVR4.0.2 mips cc rejects this.  */
+  struct point {int x, y;};
+  static struct point const zero = {0,0};
+  /* IBM XL C 1.02.0.0 rejects this.
+     It does not let you subtract one const X* pointer from another in
+     an arm of an if-expression whose if-part is not a constant
+     expression */
+  const char *g = "string";
+  pcpcc = &g + (g ? g-g : 0);
+  /* HPUX 7.0 cc rejects these. */
+  ++pcpcc;
+  ppc = (char**) pcpcc;
+  pcpcc = (char const *const *) ppc;
+  { /* SCO 3.2v4 cc rejects this sort of thing.  */
+    char tx;
+    char *t = &tx;
+    char const *s = 0 ? (char *) 0 : (char const *) 0;
+
+    *t++ = 0;
+    if (s) return 0;
+  }
+  { /* Someone thinks the Sun supposedly-ANSI compiler will reject this.  */
+    int x[] = {25, 17};
+    const int *foo = &x[0];
+    ++foo;
+  }
+  { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */
+    typedef const int *iptr;
+    iptr p = 0;
+    ++p;
+  }
+  { /* IBM XL C 1.02.0.0 rejects this sort of thing, saying
+       "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
+    struct s { int j; const int *ap[3]; } bx;
+    struct s *b = &bx; b->j = 5;
+  }
+  { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
+    const int foo = 10;
+    if (!foo) return 0;
+  }
+  return !cs[0] && !zero.x;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_c_const=yes
+else $as_nop
+  ac_cv_c_const=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_const" >&5
+printf "%s\n" "$ac_cv_c_const" >&6; }
+if test $ac_cv_c_const = no; then
+
+printf "%s\n" "#define const /**/" >>confdefs.h
+
+fi
+
+
+
+
+
+
+
+
+
+                        # Check whether --enable-cross-guesses was given.
+if test ${enable_cross_guesses+y}
+then :
+  enableval=$enable_cross_guesses; if test "x$enableval" != xconservative && test "x$enableval" != xrisky; then
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: invalid argument supplied to --enable-cross-guesses" >&5
+printf "%s\n" "$as_me: WARNING: invalid argument supplied to --enable-cross-guesses" >&2;}
+       enableval=conservative
+     fi
+     gl_cross_guesses="$enableval"
+else $as_nop
+  gl_cross_guesses=conservative
+fi
+
+  if test $gl_cross_guesses = risky; then
+    gl_cross_guess_normal="guessing yes"
+    gl_cross_guess_inverted="guessing no"
+  else
+    gl_cross_guess_normal="guessing no"
+    gl_cross_guess_inverted="guessing yes"
+  fi
+          LIBC_FATAL_STDERR_=1
+  export LIBC_FATAL_STDERR_
+
+
+# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
+# for constant arguments.  Useless!
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working alloca.h" >&5
+printf %s "checking for working alloca.h... " >&6; }
+if test ${ac_cv_working_alloca_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <alloca.h>
+int
+main (void)
+{
+char *p = (char *) alloca (2 * sizeof (int));
+			  if (p) return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_working_alloca_h=yes
+else $as_nop
+  ac_cv_working_alloca_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_working_alloca_h" >&5
+printf "%s\n" "$ac_cv_working_alloca_h" >&6; }
+if test $ac_cv_working_alloca_h = yes; then
+
+printf "%s\n" "#define HAVE_ALLOCA_H 1" >>confdefs.h
+
+fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for alloca" >&5
+printf %s "checking for alloca... " >&6; }
+if test ${ac_cv_func_alloca_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test $ac_cv_working_alloca_h = yes; then
+  ac_cv_func_alloca_works=yes
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stddef.h>
+#ifndef alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# else
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *alloca (size_t);
+# endif
+#endif
+
+int
+main (void)
+{
+char *p = (char *) alloca (1);
+				    if (p) return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_func_alloca_works=yes
+else $as_nop
+  ac_cv_func_alloca_works=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_alloca_works" >&5
+printf "%s\n" "$ac_cv_func_alloca_works" >&6; }
+fi
+
+if test $ac_cv_func_alloca_works = yes; then
+
+printf "%s\n" "#define HAVE_ALLOCA 1" >>confdefs.h
+
+else
+  # The SVR3 libPW and SVR4 libucb both contain incompatible functions
+# that cause trouble.  Some versions do not even contain alloca or
+# contain a buggy version.  If you still want to use their alloca,
+# use ar to extract alloca.o from them instead of compiling alloca.c.
+
+
+
+
+
+ALLOCA=\${LIBOBJDIR}alloca.$ac_objext
+
+printf "%s\n" "#define C_ALLOCA 1" >>confdefs.h
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking stack direction for C alloca" >&5
+printf %s "checking stack direction for C alloca... " >&6; }
+if test ${ac_cv_c_stack_direction+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  ac_cv_c_stack_direction=0
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+int
+find_stack_direction (int *addr, int depth)
+{
+  int dir, dummy = 0;
+  if (! addr)
+    addr = &dummy;
+  *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
+  dir = depth ? find_stack_direction (addr, depth - 1) : 0;
+  return dir + dummy;
+}
+
+int
+main (int argc, char **argv)
+{
+  return find_stack_direction (0, argc + !argv + 20) < 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  ac_cv_c_stack_direction=1
+else $as_nop
+  ac_cv_c_stack_direction=-1
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_stack_direction" >&5
+printf "%s\n" "$ac_cv_c_stack_direction" >&6; }
+printf "%s\n" "#define STACK_DIRECTION $ac_cv_c_stack_direction" >>confdefs.h
+
+
+fi
+
+
+    HAVE_BTOWC=1;
+  HAVE_MBSINIT=1;
+  HAVE_MBRTOWC=1;
+  HAVE_MBRLEN=1;
+  HAVE_MBSRTOWCS=1;
+  HAVE_MBSNRTOWCS=1;
+  HAVE_WCRTOMB=1;
+  HAVE_WCSRTOMBS=1;
+  HAVE_WCSNRTOMBS=1;
+  HAVE_WMEMCHR=1;
+  HAVE_WMEMCMP=1;
+  HAVE_WMEMCPY=1;
+  HAVE_WMEMMOVE=1;
+  HAVE_WMEMPCPY=1;
+  HAVE_WMEMSET=1;
+  HAVE_WCSLEN=1;
+  HAVE_WCSNLEN=1;
+  HAVE_WCSCPY=1;
+  HAVE_WCPCPY=1;
+  HAVE_WCSNCPY=1;
+  HAVE_WCPNCPY=1;
+  HAVE_WCSCAT=1;
+  HAVE_WCSNCAT=1;
+  HAVE_WCSCMP=1;
+  HAVE_WCSNCMP=1;
+  HAVE_WCSCASECMP=1;
+  HAVE_WCSNCASECMP=1;
+  HAVE_WCSCOLL=1;
+  HAVE_WCSXFRM=1;
+  HAVE_WCSDUP=1;
+  HAVE_WCSCHR=1;
+  HAVE_WCSRCHR=1;
+  HAVE_WCSCSPN=1;
+  HAVE_WCSSPN=1;
+  HAVE_WCSPBRK=1;
+  HAVE_WCSSTR=1;
+  HAVE_WCSTOK=1;
+  HAVE_WCSWIDTH=1;
+  HAVE_WCSFTIME=1;
+  HAVE_DECL_WCTOB=1;
+  HAVE_DECL_WCSDUP=1;
+  HAVE_DECL_WCWIDTH=1;
+  REPLACE_MBSTATE_T=0;
+  REPLACE_BTOWC=0;
+  REPLACE_WCTOB=0;
+  REPLACE_MBSINIT=0;
+  REPLACE_MBRTOWC=0;
+  REPLACE_MBRLEN=0;
+  REPLACE_MBSRTOWCS=0;
+  REPLACE_MBSNRTOWCS=0;
+  REPLACE_WCRTOMB=0;
+  REPLACE_WCSRTOMBS=0;
+  REPLACE_WCSNRTOMBS=0;
+  REPLACE_WCWIDTH=0;
+  REPLACE_WCSWIDTH=0;
+  REPLACE_WCSFTIME=0;
+  REPLACE_WCSTOK=0;
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether <wchar.h> uses 'inline' correctly" >&5
+printf %s "checking whether <wchar.h> uses 'inline' correctly... " >&6; }
+if test ${gl_cv_header_wchar_h_correct_inline+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_cv_header_wchar_h_correct_inline=yes
+     case "$host_os" in
+       *-gnu* | gnu*)
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+             #define wcstod renamed_wcstod
+             #include <wchar.h>
+             extern int zero (void);
+             int main () { return zero(); }
+
+_ACEOF
+                                                      save_ac_compile="$ac_compile"
+         ac_compile=`echo "$save_ac_compile" | sed s/conftest/conftest1/`
+         if echo '#include "conftest.c"' >conftest1.c \
+            && { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+               #define wcstod renamed_wcstod
+               #include <wchar.h>
+               int zero (void) { return 0; }
+
+_ACEOF
+                      ac_compile=`echo "$save_ac_compile" | sed s/conftest/conftest2/`
+           if echo '#include "conftest.c"' >conftest2.c \
+              && { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+             if $CC -o conftest$ac_exeext $CFLAGS $LDFLAGS conftest1.$ac_objext conftest2.$ac_objext $LIBS >&5 2>&1; then
+               :
+             else
+               gl_cv_header_wchar_h_correct_inline=no
+             fi
+           fi
+         fi
+         ac_compile="$save_ac_compile"
+         rm -f conftest12.c conftest12.$ac_objext conftest$ac_exeext
+         ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_wchar_h_correct_inline" >&5
+printf "%s\n" "$gl_cv_header_wchar_h_correct_inline" >&6; }
+  if test $gl_cv_header_wchar_h_correct_inline = no; then
+    as_fn_error $? "<wchar.h> cannot be used with this compiler ($CC $CFLAGS $CPPFLAGS).
+This is a known interoperability problem of glibc <= 2.5 with gcc >= 4.3 in
+C99 mode. You have four options:
+  - Add the flag -fgnu89-inline to CC and reconfigure, or
+  - Fix your include files, using parts of
+    <https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=b037a293a48718af30d706c2e18c929d0e69a621>, or
+  - Use a gcc version older than 4.3, or
+  - Don't use the flags -std=c99 or -std=gnu99.
+Configuration aborted." "$LINENO" 5
+  fi
+
+ac_func=
+for ac_item in $ac_func_c_list
+do
+  if test $ac_func; then
+    ac_fn_c_check_func "$LINENO" $ac_func ac_cv_func_$ac_func
+    if eval test \"x\$ac_cv_func_$ac_func\" = xyes; then
+      echo "#define $ac_item 1" >> confdefs.h
+    fi
+    ac_func=
+  else
+    ac_func=$ac_item
+  fi
+done
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for nl_langinfo and CODESET" >&5
+printf %s "checking for nl_langinfo and CODESET... " >&6; }
+if test ${am_cv_langinfo_codeset+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <langinfo.h>
+int
+main (void)
+{
+char* cs = nl_langinfo(CODESET); return !cs;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  am_cv_langinfo_codeset=yes
+else $as_nop
+  am_cv_langinfo_codeset=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $am_cv_langinfo_codeset" >&5
+printf "%s\n" "$am_cv_langinfo_codeset" >&6; }
+  if test $am_cv_langinfo_codeset = yes; then
+
+printf "%s\n" "#define HAVE_LANGINFO_CODESET 1" >>confdefs.h
+
+  fi
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional french locale" >&5
+printf %s "checking for a traditional french locale... " >&6; }
+if test ${gt_cv_locale_fr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is only
+     one byte long. This excludes the UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 3 || buf[2] != 'v') return 1;
+# if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+# endif
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the native Windows locale name.
+          if (LC_ALL=French_France.1252 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=French_France.1252
+          else
+            # None found.
+            gt_cv_locale_fr=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr=fr_FR.ISO-8859-1
+            else
+              # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name.
+              if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr=fr_FR.ISO8859-1
+              else
+                # Test for the HP-UX locale name.
+                if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_fr=fr_FR.iso88591
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_fr=fr
+                  else
+                    # None found.
+                    gt_cv_locale_fr=none
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr" >&5
+printf "%s\n" "$gt_cv_locale_fr" >&6; }
+  LOCALE_FR=$gt_cv_locale_fr
+
+
+
+
+  GL_GNULIB_BTOWC=0
+
+
+
+  GL_GNULIB_WCTOB=0
+
+
+
+  GL_GNULIB_MBSINIT=0
+
+
+
+  GL_GNULIB_MBRTOWC=0
+
+
+
+  GL_GNULIB_MBRLEN=0
+
+
+
+  GL_GNULIB_MBSRTOWCS=0
+
+
+
+  GL_GNULIB_MBSNRTOWCS=0
+
+
+
+  GL_GNULIB_WCRTOMB=0
+
+
+
+  GL_GNULIB_WCSRTOMBS=0
+
+
+
+  GL_GNULIB_WCSNRTOMBS=0
+
+
+
+  GL_GNULIB_WCWIDTH=0
+
+
+
+  GL_GNULIB_WMEMCHR=0
+
+
+
+  GL_GNULIB_WMEMCMP=0
+
+
+
+  GL_GNULIB_WMEMCPY=0
+
+
+
+  GL_GNULIB_WMEMMOVE=0
+
+
+
+  GL_GNULIB_WMEMPCPY=0
+
+
+
+  GL_GNULIB_WMEMSET=0
+
+
+
+  GL_GNULIB_WCSLEN=0
+
+
+
+  GL_GNULIB_WCSNLEN=0
+
+
+
+  GL_GNULIB_WCSCPY=0
+
+
+
+  GL_GNULIB_WCPCPY=0
+
+
+
+  GL_GNULIB_WCSNCPY=0
+
+
+
+  GL_GNULIB_WCPNCPY=0
+
+
+
+  GL_GNULIB_WCSCAT=0
+
+
+
+  GL_GNULIB_WCSNCAT=0
+
+
+
+  GL_GNULIB_WCSCMP=0
+
+
+
+  GL_GNULIB_WCSNCMP=0
+
+
+
+  GL_GNULIB_WCSCASECMP=0
+
+
+
+  GL_GNULIB_WCSNCASECMP=0
+
+
+
+  GL_GNULIB_WCSCOLL=0
+
+
+
+  GL_GNULIB_WCSXFRM=0
+
+
+
+  GL_GNULIB_WCSDUP=0
+
+
+
+  GL_GNULIB_WCSCHR=0
+
+
+
+  GL_GNULIB_WCSRCHR=0
+
+
+
+  GL_GNULIB_WCSCSPN=0
+
+
+
+  GL_GNULIB_WCSSPN=0
+
+
+
+  GL_GNULIB_WCSPBRK=0
+
+
+
+  GL_GNULIB_WCSSTR=0
+
+
+
+  GL_GNULIB_WCSTOK=0
+
+
+
+  GL_GNULIB_WCSWIDTH=0
+
+
+
+  GL_GNULIB_WCSFTIME=0
+
+
+
+  GL_GNULIB_MDA_WCSDUP=1
+
+
+
+
+    HAVE__EXIT=1;
+  HAVE_ALIGNED_ALLOC=1;
+  HAVE_ATOLL=1;
+  HAVE_CANONICALIZE_FILE_NAME=1;
+  HAVE_DECL_ECVT=1;
+  HAVE_DECL_FCVT=1;
+  HAVE_DECL_GCVT=1;
+  HAVE_DECL_GETLOADAVG=1;
+  HAVE_GETSUBOPT=1;
+  HAVE_GRANTPT=1;
+  HAVE_INITSTATE=1;
+  HAVE_DECL_INITSTATE=1;
+  HAVE_MBTOWC=1;
+  HAVE_MKDTEMP=1;
+  HAVE_MKOSTEMP=1;
+  HAVE_MKOSTEMPS=1;
+  HAVE_MKSTEMP=1;
+  HAVE_MKSTEMPS=1;
+  HAVE_POSIX_MEMALIGN=1;
+  HAVE_POSIX_OPENPT=1;
+  HAVE_PTSNAME=1;
+  HAVE_PTSNAME_R=1;
+  HAVE_QSORT_R=1;
+  HAVE_RANDOM=1;
+  HAVE_RANDOM_H=1;
+  HAVE_RANDOM_R=1;
+  HAVE_REALLOCARRAY=1;
+  HAVE_REALPATH=1;
+  HAVE_RPMATCH=1;
+  HAVE_SECURE_GETENV=1;
+  HAVE_SETENV=1;
+  HAVE_DECL_SETENV=1;
+  HAVE_SETSTATE=1;
+  HAVE_DECL_SETSTATE=1;
+  HAVE_STRTOD=1;
+  HAVE_STRTOL=1;
+  HAVE_STRTOLD=1;
+  HAVE_STRTOLL=1;
+  HAVE_STRTOUL=1;
+  HAVE_STRTOULL=1;
+  HAVE_STRUCT_RANDOM_DATA=1;
+  HAVE_SYS_LOADAVG_H=0;
+  HAVE_UNLOCKPT=1;
+  HAVE_DECL_UNSETENV=1;
+  REPLACE_ALIGNED_ALLOC=0;
+  REPLACE_CALLOC=0;
+  REPLACE_CANONICALIZE_FILE_NAME=0;
+  REPLACE_FREE=0;
+  REPLACE_INITSTATE=0;
+  REPLACE_MALLOC=0;
+  REPLACE_MBTOWC=0;
+  REPLACE_MKSTEMP=0;
+  REPLACE_POSIX_MEMALIGN=0;
+  REPLACE_PTSNAME=0;
+  REPLACE_PTSNAME_R=0;
+  REPLACE_PUTENV=0;
+  REPLACE_QSORT_R=0;
+  REPLACE_RANDOM=0;
+  REPLACE_RANDOM_R=0;
+  REPLACE_REALLOC=0;
+  REPLACE_REALLOCARRAY=0;
+  REPLACE_REALPATH=0;
+  REPLACE_SETENV=0;
+  REPLACE_SETSTATE=0;
+  REPLACE_STRTOD=0;
+  REPLACE_STRTOL=0;
+  REPLACE_STRTOLD=0;
+  REPLACE_STRTOLL=0;
+  REPLACE_STRTOUL=0;
+  REPLACE_STRTOULL=0;
+  REPLACE_UNSETENV=0;
+  REPLACE_WCTOMB=0;
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether malloc is ptrdiff_t safe" >&5
+printf %s "checking whether malloc is ptrdiff_t safe... " >&6; }
+if test ${gl_cv_malloc_ptrdiff+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdint.h>
+
+int
+main (void)
+{
+/* 64-bit ptrdiff_t is so wide that no practical platform
+               can exceed it.  */
+            #define WIDE_PTRDIFF (PTRDIFF_MAX >> 31 >> 31 != 0)
+
+            /* On rare machines where size_t fits in ptrdiff_t there
+               is no problem.  */
+            #define NARROW_SIZE (SIZE_MAX <= PTRDIFF_MAX)
+
+            /* glibc 2.30 and later malloc refuses to exceed ptrdiff_t
+               bounds even on 32-bit platforms.  We don't know which
+               non-glibc systems are safe.  */
+            #define KNOWN_SAFE (2 < __GLIBC__ + (30 <= __GLIBC_MINOR__))
+
+            #if WIDE_PTRDIFF || NARROW_SIZE || KNOWN_SAFE
+              return 0;
+            #else
+              #error "malloc might not be ptrdiff_t safe"
+              syntax error
+            #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_malloc_ptrdiff=yes
+else $as_nop
+  gl_cv_malloc_ptrdiff=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_malloc_ptrdiff" >&5
+printf "%s\n" "$gl_cv_malloc_ptrdiff" >&6; }
+
+
+
+
+  test "$gl_cv_malloc_ptrdiff" = yes || REPLACE_MALLOC=1
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether malloc, realloc, calloc set errno on failure" >&5
+printf %s "checking whether malloc, realloc, calloc set errno on failure... " >&6; }
+if test ${gl_cv_func_malloc_posix+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                                    case "$host_os" in
+        mingw*)
+          gl_cv_func_malloc_posix=no ;;
+        irix* | solaris*)
+
+          gl_cv_func_malloc_posix=no ;;
+        *)
+          gl_cv_func_malloc_posix=yes ;;
+      esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_malloc_posix" >&5
+printf "%s\n" "$gl_cv_func_malloc_posix" >&6; }
+
+
+
+
+
+  if test "$gl_cv_func_malloc_posix" = yes; then
+
+printf "%s\n" "#define HAVE_MALLOC_POSIX 1" >>confdefs.h
+
+  else
+    REPLACE_MALLOC=1
+  fi
+
+
+
+
+  if test $REPLACE_MALLOC = 1; then
+    REPLACE_CALLOC=1
+  fi
+
+
+
+  GL_GNULIB__EXIT=0
+
+
+
+  GL_GNULIB_ALIGNED_ALLOC=0
+
+
+
+  GL_GNULIB_ATOLL=0
+
+
+
+  GL_GNULIB_CALLOC_POSIX=0
+
+
+
+  GL_GNULIB_CANONICALIZE_FILE_NAME=0
+
+
+
+  GL_GNULIB_FREE_POSIX=0
+
+
+
+  GL_GNULIB_GETLOADAVG=0
+
+
+
+  GL_GNULIB_GETSUBOPT=0
+
+
+
+  GL_GNULIB_GRANTPT=0
+
+
+
+  GL_GNULIB_MALLOC_POSIX=0
+
+
+
+  GL_GNULIB_MBTOWC=0
+
+
+
+  GL_GNULIB_MKDTEMP=0
+
+
+
+  GL_GNULIB_MKOSTEMP=0
+
+
+
+  GL_GNULIB_MKOSTEMPS=0
+
+
+
+  GL_GNULIB_MKSTEMP=0
+
+
+
+  GL_GNULIB_MKSTEMPS=0
+
+
+
+  GL_GNULIB_POSIX_MEMALIGN=0
+
+
+
+  GL_GNULIB_POSIX_OPENPT=0
+
+
+
+  GL_GNULIB_PTSNAME=0
+
+
+
+  GL_GNULIB_PTSNAME_R=0
+
+
+
+  GL_GNULIB_PUTENV=0
+
+
+
+  GL_GNULIB_QSORT_R=0
+
+
+
+  GL_GNULIB_RANDOM=0
+
+
+
+  GL_GNULIB_RANDOM_R=0
+
+
+
+  GL_GNULIB_REALLOCARRAY=0
+
+
+
+  GL_GNULIB_REALLOC_POSIX=0
+
+
+
+  GL_GNULIB_REALPATH=0
+
+
+
+  GL_GNULIB_RPMATCH=0
+
+
+
+  GL_GNULIB_SECURE_GETENV=0
+
+
+
+  GL_GNULIB_SETENV=0
+
+
+
+  GL_GNULIB_STRTOD=0
+
+
+
+  GL_GNULIB_STRTOL=0
+
+
+
+  GL_GNULIB_STRTOLD=0
+
+
+
+  GL_GNULIB_STRTOLL=0
+
+
+
+  GL_GNULIB_STRTOUL=0
+
+
+
+  GL_GNULIB_STRTOULL=0
+
+
+
+  GL_GNULIB_SYSTEM_POSIX=0
+
+
+
+  GL_GNULIB_UNLOCKPT=0
+
+
+
+  GL_GNULIB_UNSETENV=0
+
+
+
+  GL_GNULIB_WCTOMB=0
+
+
+
+  GL_GNULIB_MDA_ECVT=1
+
+
+
+  GL_GNULIB_MDA_FCVT=1
+
+
+
+  GL_GNULIB_MDA_GCVT=1
+
+
+
+  GL_GNULIB_MDA_MKTEMP=1
+
+
+
+  GL_GNULIB_MDA_PUTENV=1
+
+
+
+
+
+  GL_GNULIB_ACCESS=0
+
+
+
+  GL_GNULIB_CHDIR=0
+
+
+
+  GL_GNULIB_CHOWN=0
+
+
+
+  GL_GNULIB_CLOSE=0
+
+
+
+  GL_GNULIB_COPY_FILE_RANGE=0
+
+
+
+  GL_GNULIB_DUP=0
+
+
+
+  GL_GNULIB_DUP2=0
+
+
+
+  GL_GNULIB_DUP3=0
+
+
+
+  GL_GNULIB_ENVIRON=0
+
+
+
+  GL_GNULIB_EUIDACCESS=0
+
+
+
+  GL_GNULIB_EXECL=0
+
+
+
+  GL_GNULIB_EXECLE=0
+
+
+
+  GL_GNULIB_EXECLP=0
+
+
+
+  GL_GNULIB_EXECV=0
+
+
+
+  GL_GNULIB_EXECVE=0
+
+
+
+  GL_GNULIB_EXECVP=0
+
+
+
+  GL_GNULIB_EXECVPE=0
+
+
+
+  GL_GNULIB_FACCESSAT=0
+
+
+
+  GL_GNULIB_FCHDIR=0
+
+
+
+  GL_GNULIB_FCHOWNAT=0
+
+
+
+  GL_GNULIB_FDATASYNC=0
+
+
+
+  GL_GNULIB_FSYNC=0
+
+
+
+  GL_GNULIB_FTRUNCATE=0
+
+
+
+  GL_GNULIB_GETCWD=0
+
+
+
+  GL_GNULIB_GETDOMAINNAME=0
+
+
+
+  GL_GNULIB_GETDTABLESIZE=0
+
+
+
+  GL_GNULIB_GETENTROPY=0
+
+
+
+  GL_GNULIB_GETGROUPS=0
+
+
+
+  GL_GNULIB_GETHOSTNAME=0
+
+
+
+  GL_GNULIB_GETLOGIN=0
+
+
+
+  GL_GNULIB_GETLOGIN_R=0
+
+
+
+  GL_GNULIB_GETOPT_POSIX=0
+
+
+
+  GL_GNULIB_GETPAGESIZE=0
+
+
+
+  GL_GNULIB_GETPASS=0
+
+
+
+  GL_GNULIB_GETUSERSHELL=0
+
+
+
+  GL_GNULIB_GROUP_MEMBER=0
+
+
+
+  GL_GNULIB_ISATTY=0
+
+
+
+  GL_GNULIB_LCHOWN=0
+
+
+
+  GL_GNULIB_LINK=0
+
+
+
+  GL_GNULIB_LINKAT=0
+
+
+
+  GL_GNULIB_LSEEK=0
+
+
+
+  GL_GNULIB_PIPE=0
+
+
+
+  GL_GNULIB_PIPE2=0
+
+
+
+  GL_GNULIB_PREAD=0
+
+
+
+  GL_GNULIB_PWRITE=0
+
+
+
+  GL_GNULIB_READ=0
+
+
+
+  GL_GNULIB_READLINK=0
+
+
+
+  GL_GNULIB_READLINKAT=0
+
+
+
+  GL_GNULIB_RMDIR=0
+
+
+
+  GL_GNULIB_SETHOSTNAME=0
+
+
+
+  GL_GNULIB_SLEEP=0
+
+
+
+  GL_GNULIB_SYMLINK=0
+
+
+
+  GL_GNULIB_SYMLINKAT=0
+
+
+
+  GL_GNULIB_TRUNCATE=0
+
+
+
+  GL_GNULIB_TTYNAME_R=0
+
+
+
+  GL_GNULIB_UNISTD_H_GETOPT=0
+
+
+
+  GL_GNULIB_UNISTD_H_NONBLOCKING=0
+
+
+
+  GL_GNULIB_UNISTD_H_SIGPIPE=0
+
+
+
+  GL_GNULIB_UNLINK=0
+
+
+
+  GL_GNULIB_UNLINKAT=0
+
+
+
+  GL_GNULIB_USLEEP=0
+
+
+
+  GL_GNULIB_WRITE=0
+
+
+
+  GL_GNULIB_MDA_ACCESS=1
+
+
+
+  GL_GNULIB_MDA_CHDIR=1
+
+
+
+  GL_GNULIB_MDA_CLOSE=1
+
+
+
+  GL_GNULIB_MDA_DUP=1
+
+
+
+  GL_GNULIB_MDA_DUP2=1
+
+
+
+  GL_GNULIB_MDA_EXECL=1
+
+
+
+  GL_GNULIB_MDA_EXECLE=1
+
+
+
+  GL_GNULIB_MDA_EXECLP=1
+
+
+
+  GL_GNULIB_MDA_EXECV=1
+
+
+
+  GL_GNULIB_MDA_EXECVE=1
+
+
+
+  GL_GNULIB_MDA_EXECVP=1
+
+
+
+  GL_GNULIB_MDA_EXECVPE=1
+
+
+
+  GL_GNULIB_MDA_GETCWD=1
+
+
+
+  GL_GNULIB_MDA_GETPID=1
+
+
+
+  GL_GNULIB_MDA_ISATTY=1
+
+
+
+  GL_GNULIB_MDA_LSEEK=1
+
+
+
+  GL_GNULIB_MDA_READ=1
+
+
+
+  GL_GNULIB_MDA_RMDIR=1
+
+
+
+  GL_GNULIB_MDA_SWAB=1
+
+
+
+  GL_GNULIB_MDA_UNLINK=1
+
+
+
+  GL_GNULIB_MDA_WRITE=1
+
+
+
+
+    HAVE_CHOWN=1;
+  HAVE_COPY_FILE_RANGE=1;
+  HAVE_DUP3=1;
+  HAVE_EUIDACCESS=1;
+  HAVE_EXECVPE=1;
+  HAVE_FACCESSAT=1;
+  HAVE_FCHDIR=1;
+  HAVE_FCHOWNAT=1;
+  HAVE_FDATASYNC=1;
+  HAVE_FSYNC=1;
+  HAVE_FTRUNCATE=1;
+  HAVE_GETDTABLESIZE=1;
+  HAVE_GETENTROPY=1;
+  HAVE_GETGROUPS=1;
+  HAVE_GETHOSTNAME=1;
+  HAVE_GETLOGIN=1;
+  HAVE_GETPAGESIZE=1;
+  HAVE_GETPASS=1;
+  HAVE_GROUP_MEMBER=1;
+  HAVE_LCHOWN=1;
+  HAVE_LINK=1;
+  HAVE_LINKAT=1;
+  HAVE_PIPE=1;
+  HAVE_PIPE2=1;
+  HAVE_PREAD=1;
+  HAVE_PWRITE=1;
+  HAVE_READLINK=1;
+  HAVE_READLINKAT=1;
+  HAVE_SETHOSTNAME=1;
+  HAVE_SLEEP=1;
+  HAVE_SYMLINK=1;
+  HAVE_SYMLINKAT=1;
+  HAVE_UNLINKAT=1;
+  HAVE_USLEEP=1;
+  HAVE_DECL_ENVIRON=1;
+  HAVE_DECL_EXECVPE=1;
+  HAVE_DECL_FCHDIR=1;
+  HAVE_DECL_FDATASYNC=1;
+  HAVE_DECL_GETDOMAINNAME=1;
+  HAVE_DECL_GETLOGIN=1;
+  HAVE_DECL_GETLOGIN_R=1;
+  HAVE_DECL_GETPAGESIZE=1;
+  HAVE_DECL_GETUSERSHELL=1;
+  HAVE_DECL_SETHOSTNAME=1;
+  HAVE_DECL_TRUNCATE=1;
+  HAVE_DECL_TTYNAME_R=1;
+  HAVE_OS_H=0;
+  HAVE_SYS_PARAM_H=0;
+  REPLACE_ACCESS=0;
+  REPLACE_CHOWN=0;
+  REPLACE_CLOSE=0;
+  REPLACE_DUP=0;
+  REPLACE_DUP2=0;
+  REPLACE_EXECL=0;
+  REPLACE_EXECLE=0;
+  REPLACE_EXECLP=0;
+  REPLACE_EXECV=0;
+  REPLACE_EXECVE=0;
+  REPLACE_EXECVP=0;
+  REPLACE_EXECVPE=0;
+  REPLACE_FACCESSAT=0;
+  REPLACE_FCHOWNAT=0;
+  REPLACE_FTRUNCATE=0;
+  REPLACE_GETCWD=0;
+  REPLACE_GETDOMAINNAME=0;
+  REPLACE_GETDTABLESIZE=0;
+  REPLACE_GETLOGIN_R=0;
+  REPLACE_GETGROUPS=0;
+  REPLACE_GETPAGESIZE=0;
+  REPLACE_GETPASS=0;
+  REPLACE_ISATTY=0;
+  REPLACE_LCHOWN=0;
+  REPLACE_LINK=0;
+  REPLACE_LINKAT=0;
+  REPLACE_LSEEK=0;
+  REPLACE_PREAD=0;
+  REPLACE_PWRITE=0;
+  REPLACE_READ=0;
+  REPLACE_READLINK=0;
+  REPLACE_READLINKAT=0;
+  REPLACE_RMDIR=0;
+  REPLACE_SLEEP=0;
+  REPLACE_SYMLINK=0;
+  REPLACE_SYMLINKAT=0;
+  REPLACE_TRUNCATE=0;
+  REPLACE_TTYNAME_R=0;
+  REPLACE_UNLINK=0;
+  REPLACE_UNLINKAT=0;
+  REPLACE_USLEEP=0;
+  REPLACE_WRITE=0;
+  UNISTD_H_HAVE_SYS_RANDOM_H=0;
+  UNISTD_H_HAVE_WINSOCK2_H=0;
+  UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
+
+
+
+
+
+
+
+
+
+  if test $ac_cv_func__set_invalid_parameter_handler = yes; then
+    HAVE_MSVC_INVALID_PARAMETER_HANDLER=1
+
+printf "%s\n" "#define HAVE_MSVC_INVALID_PARAMETER_HANDLER 1" >>confdefs.h
+
+  else
+    HAVE_MSVC_INVALID_PARAMETER_HANDLER=0
+  fi
+
+
+
+    SYS_IOCTL_H_HAVE_WINSOCK2_H=0;
+  SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
+
+  REPLACE_IOCTL=0;
+
+
+
+
+    HAVE_OPENDIR=1;
+  HAVE_READDIR=1;
+  HAVE_REWINDDIR=1;
+  HAVE_CLOSEDIR=1;
+  HAVE_DECL_DIRFD=1;
+  HAVE_DECL_FDOPENDIR=1;
+  HAVE_FDOPENDIR=1;
+  HAVE_SCANDIR=1;
+  HAVE_ALPHASORT=1;
+  REPLACE_OPENDIR=0;
+  REPLACE_CLOSEDIR=0;
+  REPLACE_DIRFD=0;
+  REPLACE_FDOPENDIR=0;
+
+
+
+
+
+
+
+  GL_GNULIB_OPENDIR=0
+
+
+
+  GL_GNULIB_READDIR=0
+
+
+
+  GL_GNULIB_REWINDDIR=0
+
+
+
+  GL_GNULIB_CLOSEDIR=0
+
+
+
+  GL_GNULIB_DIRFD=0
+
+
+
+  GL_GNULIB_FDOPENDIR=0
+
+
+
+  GL_GNULIB_SCANDIR=0
+
+
+
+  GL_GNULIB_ALPHASORT=0
+
+
+
+
+    HAVE_ISBLANK=1;
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the preprocessor supports include_next" >&5
+printf %s "checking whether the preprocessor supports include_next... " >&6; }
+if test ${gl_cv_have_include_next+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  rm -rf conftestd1a conftestd1b conftestd2
+     mkdir conftestd1a conftestd1b conftestd2
+                                                  cat <<EOF > conftestd1a/conftest.h
+#define DEFINED_IN_CONFTESTD1
+#include_next <conftest.h>
+#ifdef DEFINED_IN_CONFTESTD2
+int foo;
+#else
+#error "include_next doesn't work"
+#endif
+EOF
+     cat <<EOF > conftestd1b/conftest.h
+#define DEFINED_IN_CONFTESTD1
+#include <stdio.h>
+#include_next <conftest.h>
+#ifdef DEFINED_IN_CONFTESTD2
+int foo;
+#else
+#error "include_next doesn't work"
+#endif
+EOF
+     cat <<EOF > conftestd2/conftest.h
+#ifndef DEFINED_IN_CONFTESTD1
+#error "include_next test doesn't work"
+#endif
+#define DEFINED_IN_CONFTESTD2
+EOF
+     gl_save_CPPFLAGS="$CPPFLAGS"
+     CPPFLAGS="$gl_save_CPPFLAGS -Iconftestd1b -Iconftestd2"
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <conftest.h>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_have_include_next=yes
+else $as_nop
+  CPPFLAGS="$gl_save_CPPFLAGS -Iconftestd1a -Iconftestd2"
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <conftest.h>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_have_include_next=buggy
+else $as_nop
+  gl_cv_have_include_next=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+     CPPFLAGS="$gl_save_CPPFLAGS"
+     rm -rf conftestd1a conftestd1b conftestd2
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_have_include_next" >&5
+printf "%s\n" "$gl_cv_have_include_next" >&6; }
+  PRAGMA_SYSTEM_HEADER=
+  if test $gl_cv_have_include_next = yes; then
+    INCLUDE_NEXT=include_next
+    INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include_next
+    if test -n "$GCC"; then
+      PRAGMA_SYSTEM_HEADER='#pragma GCC system_header'
+    fi
+  else
+    if test $gl_cv_have_include_next = buggy; then
+      INCLUDE_NEXT=include
+      INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include_next
+    else
+      INCLUDE_NEXT=include
+      INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include
+    fi
+  fi
+
+
+
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether source code line length is unlimited" >&5
+printf %s "checking whether source code line length is unlimited... " >&6; }
+if test ${gl_cv_source_line_length_unlimited+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#ifdef __TANDEM
+choke me
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "choke me" >/dev/null 2>&1
+then :
+  gl_cv_source_line_length_unlimited=no
+else $as_nop
+  gl_cv_source_line_length_unlimited=yes
+fi
+rm -rf conftest*
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_source_line_length_unlimited" >&5
+printf "%s\n" "$gl_cv_source_line_length_unlimited" >&6; }
+  if test $gl_cv_source_line_length_unlimited = no; then
+    PRAGMA_COLUMNS="#pragma COLUMNS 10000"
+  else
+    PRAGMA_COLUMNS=
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_ctype_h='<'ctype.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <ctype.h>" >&5
+printf %s "checking absolute name of <ctype.h>... " >&6; }
+if test ${gl_cv_next_ctype_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ctype.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'ctype.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_ctype_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_ctype_h
+           gl_cv_next_ctype_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_ctype_h" >&5
+printf "%s\n" "$gl_cv_next_ctype_h" >&6; }
+     fi
+     NEXT_CTYPE_H=$gl_cv_next_ctype_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'ctype.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_ctype_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_CTYPE_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+
+
+
+
+  GL_GNULIB_ISBLANK=0
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for inline" >&5
+printf %s "checking for inline... " >&6; }
+if test ${ac_cv_c_inline+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_c_inline=no
+for ac_kw in inline __inline__ __inline; do
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifndef __cplusplus
+typedef int foo_t;
+static $ac_kw foo_t static_foo (void) {return 0; }
+$ac_kw foo_t foo (void) {return 0; }
+#endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_c_inline=$ac_kw
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  test "$ac_cv_c_inline" != no && break
+done
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_inline" >&5
+printf "%s\n" "$ac_cv_c_inline" >&6; }
+
+case $ac_cv_c_inline in
+  inline | yes) ;;
+  *)
+    case $ac_cv_c_inline in
+      no) ac_val=;;
+      *) ac_val=$ac_cv_c_inline;;
+    esac
+    cat >>confdefs.h <<_ACEOF
+#ifndef __cplusplus
+#define inline $ac_val
+#endif
+_ACEOF
+    ;;
+esac
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_dirent_h='<'dirent.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <dirent.h>" >&5
+printf %s "checking absolute name of <dirent.h>... " >&6; }
+if test ${gl_cv_next_dirent_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_dirent_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <dirent.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'dirent.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_dirent_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_dirent_h
+           gl_cv_next_dirent_h='"'$gl_header'"'
+          else
+               gl_cv_next_dirent_h='<'dirent.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_dirent_h" >&5
+printf "%s\n" "$gl_cv_next_dirent_h" >&6; }
+     fi
+     NEXT_DIRENT_H=$gl_cv_next_dirent_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'dirent.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_dirent_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_DIRENT_H=$gl_next_as_first_directive
+
+
+
+
+  if test $ac_cv_header_dirent_h = yes; then
+    HAVE_DIRENT_H=1
+  else
+    HAVE_DIRENT_H=0
+  fi
+
+
+
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC options needed to detect all undeclared functions" >&5
+printf %s "checking for $CC options needed to detect all undeclared functions... " >&6; }
+if test ${ac_cv_c_undeclared_builtin_options+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_save_CFLAGS=$CFLAGS
+   ac_cv_c_undeclared_builtin_options='cannot detect'
+   for ac_arg in '' -fno-builtin; do
+     CFLAGS="$ac_save_CFLAGS $ac_arg"
+     # This test program should *not* compile successfully.
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+(void) strchr;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+else $as_nop
+  # This test program should compile successfully.
+        # No library function is consistently available on
+        # freestanding implementations, so test against a dummy
+        # declaration.  Include always-available headers on the
+        # off chance that they somehow elicit warnings.
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <float.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stddef.h>
+extern void ac_decl (int, char *);
+
+int
+main (void)
+{
+(void) ac_decl (0, (char *) 0);
+  (void) ac_decl;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  if test x"$ac_arg" = x
+then :
+  ac_cv_c_undeclared_builtin_options='none needed'
+else $as_nop
+  ac_cv_c_undeclared_builtin_options=$ac_arg
+fi
+          break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+    done
+    CFLAGS=$ac_save_CFLAGS
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_undeclared_builtin_options" >&5
+printf "%s\n" "$ac_cv_c_undeclared_builtin_options" >&6; }
+  case $ac_cv_c_undeclared_builtin_options in #(
+  'cannot detect') :
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot make $CC report undeclared builtins
+See \`config.log' for more details" "$LINENO" 5; } ;; #(
+  'none needed') :
+    ac_c_undeclared_builtin_options='' ;; #(
+  *) :
+    ac_c_undeclared_builtin_options=$ac_cv_c_undeclared_builtin_options ;;
+esac
+
+gl_mda_defines='
+#if defined _WIN32 && !defined __CYGWIN__
+#define access    _access
+#define chdir     _chdir
+#define chmod     _chmod
+#define close     _close
+#define creat     _creat
+#define dup       _dup
+#define dup2      _dup2
+#define ecvt      _ecvt
+#define execl     _execl
+#define execle    _execle
+#define execlp    _execlp
+#define execv     _execv
+#define execve    _execve
+#define execvp    _execvp
+#define execvpe   _execvpe
+#define fcloseall _fcloseall
+#define fcvt      _fcvt
+#define fdopen    _fdopen
+#define fileno    _fileno
+#define gcvt      _gcvt
+#define getcwd    _getcwd
+#define getpid    _getpid
+#define getw      _getw
+#define isatty    _isatty
+#define j0        _j0
+#define j1        _j1
+#define jn        _jn
+#define lfind     _lfind
+#define lsearch   _lsearch
+#define lseek     _lseek
+#define memccpy   _memccpy
+#define mkdir     _mkdir
+#define mktemp    _mktemp
+#define open      _open
+#define putenv    _putenv
+#define putw      _putw
+#define read      _read
+#define rmdir     _rmdir
+#define strdup    _strdup
+#define swab      _swab
+#define tempnam   _tempnam
+#define tzset     _tzset
+#define umask     _umask
+#define unlink    _unlink
+#define utime     _utime
+#define wcsdup    _wcsdup
+#define write     _write
+#define y0        _y0
+#define y1        _y1
+#define yn        _yn
+#endif
+'
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for complete errno.h" >&5
+printf %s "checking for complete errno.h... " >&6; }
+if test ${gl_cv_header_errno_h_complete+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <errno.h>
+#if !defined ETXTBSY
+booboo
+#endif
+#if !defined ENOMSG
+booboo
+#endif
+#if !defined EIDRM
+booboo
+#endif
+#if !defined ENOLINK
+booboo
+#endif
+#if !defined EPROTO
+booboo
+#endif
+#if !defined EMULTIHOP
+booboo
+#endif
+#if !defined EBADMSG
+booboo
+#endif
+#if !defined EOVERFLOW
+booboo
+#endif
+#if !defined ENOTSUP
+booboo
+#endif
+#if !defined ENETRESET
+booboo
+#endif
+#if !defined ECONNABORTED
+booboo
+#endif
+#if !defined ESTALE
+booboo
+#endif
+#if !defined EDQUOT
+booboo
+#endif
+#if !defined ECANCELED
+booboo
+#endif
+#if !defined EOWNERDEAD
+booboo
+#endif
+#if !defined ENOTRECOVERABLE
+booboo
+#endif
+#if !defined EILSEQ
+booboo
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "booboo" >/dev/null 2>&1
+then :
+  gl_cv_header_errno_h_complete=no
+else $as_nop
+  gl_cv_header_errno_h_complete=yes
+fi
+rm -rf conftest*
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_errno_h_complete" >&5
+printf "%s\n" "$gl_cv_header_errno_h_complete" >&6; }
+  if test $gl_cv_header_errno_h_complete = yes; then
+    ERRNO_H=''
+  else
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_errno_h='<'errno.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <errno.h>" >&5
+printf %s "checking absolute name of <errno.h>... " >&6; }
+if test ${gl_cv_next_errno_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <errno.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'errno.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_errno_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_errno_h
+           gl_cv_next_errno_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_errno_h" >&5
+printf "%s\n" "$gl_cv_next_errno_h" >&6; }
+     fi
+     NEXT_ERRNO_H=$gl_cv_next_errno_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'errno.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_errno_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_ERRNO_H=$gl_next_as_first_directive
+
+
+
+
+    ERRNO_H='errno.h'
+  fi
+
+   if test -n "$ERRNO_H"; then
+  GL_GENERATE_ERRNO_H_TRUE=
+  GL_GENERATE_ERRNO_H_FALSE='#'
+else
+  GL_GENERATE_ERRNO_H_TRUE='#'
+  GL_GENERATE_ERRNO_H_FALSE=
+fi
+
+
+  if test -n "$ERRNO_H"; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for EMULTIHOP value" >&5
+printf %s "checking for EMULTIHOP value... " >&6; }
+if test ${gl_cv_header_errno_h_EMULTIHOP+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <errno.h>
+#ifdef EMULTIHOP
+yes
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "yes" >/dev/null 2>&1
+then :
+  gl_cv_header_errno_h_EMULTIHOP=yes
+else $as_nop
+  gl_cv_header_errno_h_EMULTIHOP=no
+fi
+rm -rf conftest*
+
+      if test $gl_cv_header_errno_h_EMULTIHOP = no; then
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#define _XOPEN_SOURCE_EXTENDED 1
+#include <errno.h>
+#ifdef EMULTIHOP
+yes
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "yes" >/dev/null 2>&1
+then :
+  gl_cv_header_errno_h_EMULTIHOP=hidden
+fi
+rm -rf conftest*
+
+        if test $gl_cv_header_errno_h_EMULTIHOP = hidden; then
+                              if ac_fn_c_compute_int "$LINENO" "EMULTIHOP" "gl_cv_header_errno_h_EMULTIHOP"        "
+#define _XOPEN_SOURCE_EXTENDED 1
+#include <errno.h>
+/* The following two lines are a workaround against an autoconf-2.52 bug.  */
+#include <stdio.h>
+#include <stdlib.h>
+"
+then :
+
+fi
+
+        fi
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_errno_h_EMULTIHOP" >&5
+printf "%s\n" "$gl_cv_header_errno_h_EMULTIHOP" >&6; }
+    case $gl_cv_header_errno_h_EMULTIHOP in
+      yes | no)
+        EMULTIHOP_HIDDEN=0; EMULTIHOP_VALUE=
+        ;;
+      *)
+        EMULTIHOP_HIDDEN=1; EMULTIHOP_VALUE="$gl_cv_header_errno_h_EMULTIHOP"
+        ;;
+    esac
+
+
+  fi
+
+
+  if test -n "$ERRNO_H"; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ENOLINK value" >&5
+printf %s "checking for ENOLINK value... " >&6; }
+if test ${gl_cv_header_errno_h_ENOLINK+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <errno.h>
+#ifdef ENOLINK
+yes
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "yes" >/dev/null 2>&1
+then :
+  gl_cv_header_errno_h_ENOLINK=yes
+else $as_nop
+  gl_cv_header_errno_h_ENOLINK=no
+fi
+rm -rf conftest*
+
+      if test $gl_cv_header_errno_h_ENOLINK = no; then
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#define _XOPEN_SOURCE_EXTENDED 1
+#include <errno.h>
+#ifdef ENOLINK
+yes
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "yes" >/dev/null 2>&1
+then :
+  gl_cv_header_errno_h_ENOLINK=hidden
+fi
+rm -rf conftest*
+
+        if test $gl_cv_header_errno_h_ENOLINK = hidden; then
+                              if ac_fn_c_compute_int "$LINENO" "ENOLINK" "gl_cv_header_errno_h_ENOLINK"        "
+#define _XOPEN_SOURCE_EXTENDED 1
+#include <errno.h>
+/* The following two lines are a workaround against an autoconf-2.52 bug.  */
+#include <stdio.h>
+#include <stdlib.h>
+"
+then :
+
+fi
+
+        fi
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_errno_h_ENOLINK" >&5
+printf "%s\n" "$gl_cv_header_errno_h_ENOLINK" >&6; }
+    case $gl_cv_header_errno_h_ENOLINK in
+      yes | no)
+        ENOLINK_HIDDEN=0; ENOLINK_VALUE=
+        ;;
+      *)
+        ENOLINK_HIDDEN=1; ENOLINK_VALUE="$gl_cv_header_errno_h_ENOLINK"
+        ;;
+    esac
+
+
+  fi
+
+
+  if test -n "$ERRNO_H"; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for EOVERFLOW value" >&5
+printf %s "checking for EOVERFLOW value... " >&6; }
+if test ${gl_cv_header_errno_h_EOVERFLOW+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <errno.h>
+#ifdef EOVERFLOW
+yes
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "yes" >/dev/null 2>&1
+then :
+  gl_cv_header_errno_h_EOVERFLOW=yes
+else $as_nop
+  gl_cv_header_errno_h_EOVERFLOW=no
+fi
+rm -rf conftest*
+
+      if test $gl_cv_header_errno_h_EOVERFLOW = no; then
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#define _XOPEN_SOURCE_EXTENDED 1
+#include <errno.h>
+#ifdef EOVERFLOW
+yes
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "yes" >/dev/null 2>&1
+then :
+  gl_cv_header_errno_h_EOVERFLOW=hidden
+fi
+rm -rf conftest*
+
+        if test $gl_cv_header_errno_h_EOVERFLOW = hidden; then
+                              if ac_fn_c_compute_int "$LINENO" "EOVERFLOW" "gl_cv_header_errno_h_EOVERFLOW"        "
+#define _XOPEN_SOURCE_EXTENDED 1
+#include <errno.h>
+/* The following two lines are a workaround against an autoconf-2.52 bug.  */
+#include <stdio.h>
+#include <stdlib.h>
+"
+then :
+
+fi
+
+        fi
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_errno_h_EOVERFLOW" >&5
+printf "%s\n" "$gl_cv_header_errno_h_EOVERFLOW" >&6; }
+    case $gl_cv_header_errno_h_EOVERFLOW in
+      yes | no)
+        EOVERFLOW_HIDDEN=0; EOVERFLOW_VALUE=
+        ;;
+      *)
+        EOVERFLOW_HIDDEN=1; EOVERFLOW_VALUE="$gl_cv_header_errno_h_EOVERFLOW"
+        ;;
+    esac
+
+
+  fi
+
+
+ac_fn_check_decl "$LINENO" "strerror_r" "ac_cv_have_decl_strerror_r" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_strerror_r" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_STRERROR_R $ac_have_decl" >>confdefs.h
+
+
+if test $ac_cv_have_decl_strerror_r = yes; then
+  # For backward compatibility's sake, define HAVE_STRERROR_R.
+  # (We used to run AC_CHECK_FUNCS_ONCE for strerror_r, as well
+  # as AC_CHECK_DECLS_ONCE.)
+
+printf "%s\n" "#define HAVE_STRERROR_R 1" >>confdefs.h
+
+fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether strerror_r returns char *" >&5
+printf %s "checking whether strerror_r returns char *... " >&6; }
+if test ${ac_cv_func_strerror_r_char_p+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    ac_cv_func_strerror_r_char_p=no
+    if test $ac_cv_have_decl_strerror_r = yes; then
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <string.h>
+int
+main (void)
+{
+
+	  char buf[100];
+	  char x = *strerror_r (0, buf, sizeof buf);
+	  char *p = strerror_r (0, buf, sizeof buf);
+	  return !p || x;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_func_strerror_r_char_p=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+    fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_strerror_r_char_p" >&5
+printf "%s\n" "$ac_cv_func_strerror_r_char_p" >&6; }
+if test $ac_cv_func_strerror_r_char_p = yes; then
+
+printf "%s\n" "#define STRERROR_R_CHAR_P 1" >>confdefs.h
+
+fi
+
+
+  XGETTEXT_EXTRA_OPTIONS=
+
+
+
+
+ac_fn_check_decl "$LINENO" "fchdir" "ac_cv_have_decl_fchdir" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_fchdir" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_FCHDIR $ac_have_decl" >>confdefs.h
+
+
+    HAVE_FCNTL=1;
+  HAVE_OPENAT=1;
+  REPLACE_CREAT=0;
+  REPLACE_FCNTL=0;
+  REPLACE_OPEN=0;
+  REPLACE_OPENAT=0;
+
+
+
+
+  GL_GNULIB_CREAT=0
+
+
+
+  GL_GNULIB_FCNTL=0
+
+
+
+  GL_GNULIB_NONBLOCKING=0
+
+
+
+  GL_GNULIB_OPEN=0
+
+
+
+  GL_GNULIB_OPENAT=0
+
+
+
+  GL_GNULIB_MDA_CREAT=1
+
+
+
+  GL_GNULIB_MDA_OPEN=1
+
+
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working fcntl.h" >&5
+printf %s "checking for working fcntl.h... " >&6; }
+if test ${gl_cv_header_working_fcntl_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                  # Guess 'no' on native Windows.
+          mingw*) gl_cv_header_working_fcntl_h='no' ;;
+          *)      gl_cv_header_working_fcntl_h=cross-compiling ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+           #include <sys/stat.h>
+           #if HAVE_UNISTD_H
+           # include <unistd.h>
+           #else /* on Windows with MSVC */
+           # include <io.h>
+           # include <stdlib.h>
+           # defined sleep(n) _sleep ((n) * 1000)
+           #endif
+           #include <fcntl.h>
+
+
+$gl_mda_defines
+
+           #ifndef O_NOATIME
+            #define O_NOATIME 0
+           #endif
+           #ifndef O_NOFOLLOW
+            #define O_NOFOLLOW 0
+           #endif
+           static int const constants[] =
+            {
+              O_CREAT, O_EXCL, O_NOCTTY, O_TRUNC, O_APPEND,
+              O_NONBLOCK, O_SYNC, O_ACCMODE, O_RDONLY, O_RDWR, O_WRONLY
+            };
+
+int
+main (void)
+{
+
+            int result = !constants;
+            #if HAVE_SYMLINK
+            {
+              static char const sym[] = "conftest.sym";
+              if (symlink ("/dev/null", sym) != 0)
+                result |= 2;
+              else
+                {
+                  int fd = open (sym, O_WRONLY | O_NOFOLLOW | O_CREAT, 0);
+                  if (fd >= 0)
+                    {
+                      close (fd);
+                      result |= 4;
+                    }
+                }
+              if (unlink (sym) != 0 || symlink (".", sym) != 0)
+                result |= 2;
+              else
+                {
+                  int fd = open (sym, O_RDONLY | O_NOFOLLOW);
+                  if (fd >= 0)
+                    {
+                      close (fd);
+                      result |= 4;
+                    }
+                }
+              unlink (sym);
+            }
+            #endif
+            {
+              static char const file[] = "confdefs.h";
+              int fd = open (file, O_RDONLY | O_NOATIME);
+              if (fd < 0)
+                result |= 8;
+              else
+                {
+                  struct stat st0;
+                  if (fstat (fd, &st0) != 0)
+                    result |= 16;
+                  else
+                    {
+                      char c;
+                      sleep (1);
+                      if (read (fd, &c, 1) != 1)
+                        result |= 24;
+                      else
+                        {
+                          if (close (fd) != 0)
+                            result |= 32;
+                          else
+                            {
+                              struct stat st1;
+                              if (stat (file, &st1) != 0)
+                                result |= 40;
+                              else
+                                if (st0.st_atime != st1.st_atime)
+                                  result |= 64;
+                            }
+                        }
+                    }
+                }
+            }
+            return result;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_header_working_fcntl_h=yes
+else $as_nop
+  case $? in #(
+        4) gl_cv_header_working_fcntl_h='no (bad O_NOFOLLOW)';; #(
+        64) gl_cv_header_working_fcntl_h='no (bad O_NOATIME)';; #(
+        68) gl_cv_header_working_fcntl_h='no (bad O_NOATIME, O_NOFOLLOW)';; #(
+         *) gl_cv_header_working_fcntl_h='no';;
+        esac
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_working_fcntl_h" >&5
+printf "%s\n" "$gl_cv_header_working_fcntl_h" >&6; }
+
+  case $gl_cv_header_working_fcntl_h in #(
+  *O_NOATIME* | no | cross-compiling) ac_val=0;; #(
+  *) ac_val=1;;
+  esac
+
+printf "%s\n" "#define HAVE_WORKING_O_NOATIME $ac_val" >>confdefs.h
+
+
+  case $gl_cv_header_working_fcntl_h in #(
+  *O_NOFOLLOW* | no | cross-compiling) ac_val=0;; #(
+  *) ac_val=1;;
+  esac
+
+printf "%s\n" "#define HAVE_WORKING_O_NOFOLLOW $ac_val" >>confdefs.h
+
+
+
+  ac_fn_c_check_type "$LINENO" "pid_t" "ac_cv_type_pid_t" "$ac_includes_default
+"
+if test "x$ac_cv_type_pid_t" = xyes
+then :
+
+else $as_nop
+                                          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+          #if defined _WIN64 && !defined __CYGWIN__
+          LLP64
+          #endif
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_pid_type='int'
+else $as_nop
+  ac_pid_type='__int64'
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+printf "%s\n" "#define pid_t $ac_pid_type" >>confdefs.h
+
+
+fi
+
+
+ac_fn_c_check_type "$LINENO" "mode_t" "ac_cv_type_mode_t" "$ac_includes_default"
+if test "x$ac_cv_type_mode_t" = xyes
+then :
+
+else $as_nop
+
+printf "%s\n" "#define mode_t int" >>confdefs.h
+
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_fcntl_h='<'fcntl.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <fcntl.h>" >&5
+printf %s "checking absolute name of <fcntl.h>... " >&6; }
+if test ${gl_cv_next_fcntl_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <fcntl.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'fcntl.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_fcntl_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_fcntl_h
+           gl_cv_next_fcntl_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_fcntl_h" >&5
+printf "%s\n" "$gl_cv_next_fcntl_h" >&6; }
+     fi
+     NEXT_FCNTL_H=$gl_cv_next_fcntl_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'fcntl.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_fcntl_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_FCNTL_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for promoted mode_t type" >&5
+printf %s "checking for promoted mode_t type... " >&6; }
+if test ${gl_cv_promoted_mode_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+int
+main (void)
+{
+typedef int array[2 * (sizeof (mode_t) < sizeof (int)) - 1];
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_promoted_mode_t='int'
+else $as_nop
+  gl_cv_promoted_mode_t='mode_t'
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_promoted_mode_t" >&5
+printf "%s\n" "$gl_cv_promoted_mode_t" >&6; }
+
+printf "%s\n" "#define PROMOTED_MODE_T $gl_cv_promoted_mode_t" >>confdefs.h
+
+
+
+
+
+    HAVE_FNMATCH=1;
+  REPLACE_FNMATCH=0;
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_fnmatch_h='<'fnmatch.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <fnmatch.h>" >&5
+printf %s "checking absolute name of <fnmatch.h>... " >&6; }
+if test ${gl_cv_next_fnmatch_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_fnmatch_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <fnmatch.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'fnmatch.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_fnmatch_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_fnmatch_h
+           gl_cv_next_fnmatch_h='"'$gl_header'"'
+          else
+               gl_cv_next_fnmatch_h='<'fnmatch.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_fnmatch_h" >&5
+printf "%s\n" "$gl_cv_next_fnmatch_h" >&6; }
+     fi
+     NEXT_FNMATCH_H=$gl_cv_next_fnmatch_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'fnmatch.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_fnmatch_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+  if test $ac_cv_header_fnmatch_h = yes; then
+    HAVE_FNMATCH_H=1
+  else
+    HAVE_FNMATCH_H=0
+  fi
+
+
+  FNMATCH_H=''
+     if false; then
+              FNMATCH_H=fnmatch.h
+     else
+       if test $ac_cv_header_fnmatch_h != yes; then
+                  FNMATCH_H=fnmatch.h
+       fi
+     fi
+
+
+   if test -n "$FNMATCH_H"; then
+  GL_GENERATE_FNMATCH_H_TRUE=
+  GL_GENERATE_FNMATCH_H_FALSE='#'
+else
+  GL_GENERATE_FNMATCH_H_TRUE='#'
+  GL_GENERATE_FNMATCH_H_FALSE=
+fi
+
+
+
+
+
+
+
+
+
+  GL_GNULIB_FNMATCH=0
+
+
+
+
+
+   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for mbstate_t" >&5
+printf %s "checking for mbstate_t... " >&6; }
+if test ${ac_cv_type_mbstate_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+             #include <wchar.h>
+int
+main (void)
+{
+mbstate_t x; return sizeof x;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_type_mbstate_t=yes
+else $as_nop
+  ac_cv_type_mbstate_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_mbstate_t" >&5
+printf "%s\n" "$ac_cv_type_mbstate_t" >&6; }
+   if test $ac_cv_type_mbstate_t = yes; then
+
+printf "%s\n" "#define HAVE_MBSTATE_T 1" >>confdefs.h
+
+   else
+
+printf "%s\n" "#define mbstate_t int" >>confdefs.h
+
+   fi
+
+
+
+    HAVE_DECL_FCLOSEALL=1;
+  HAVE_DECL_FPURGE=1;
+  HAVE_DECL_FSEEKO=1;
+  HAVE_DECL_FTELLO=1;
+  HAVE_DECL_GETDELIM=1;
+  HAVE_DECL_GETLINE=1;
+  HAVE_DECL_OBSTACK_PRINTF=1;
+  HAVE_DECL_SNPRINTF=1;
+  HAVE_DECL_VSNPRINTF=1;
+  HAVE_DPRINTF=1;
+  HAVE_FSEEKO=1;
+  HAVE_FTELLO=1;
+  HAVE_PCLOSE=1;
+  HAVE_POPEN=1;
+  HAVE_RENAMEAT=1;
+  HAVE_VASPRINTF=1;
+  HAVE_VDPRINTF=1;
+  REPLACE_DPRINTF=0;
+  REPLACE_FCLOSE=0;
+  REPLACE_FDOPEN=0;
+  REPLACE_FFLUSH=0;
+  REPLACE_FOPEN=0;
+  REPLACE_FPRINTF=0;
+  REPLACE_FPURGE=0;
+  REPLACE_FREOPEN=0;
+  REPLACE_FSEEK=0;
+  REPLACE_FSEEKO=0;
+  REPLACE_FTELL=0;
+  REPLACE_FTELLO=0;
+  REPLACE_GETDELIM=0;
+  REPLACE_GETLINE=0;
+  REPLACE_OBSTACK_PRINTF=0;
+  REPLACE_PERROR=0;
+  REPLACE_POPEN=0;
+  REPLACE_PRINTF=0;
+  REPLACE_REMOVE=0;
+  REPLACE_RENAME=0;
+  REPLACE_RENAMEAT=0;
+  REPLACE_SNPRINTF=0;
+  REPLACE_SPRINTF=0;
+  REPLACE_STDIO_READ_FUNCS=0;
+  REPLACE_STDIO_WRITE_FUNCS=0;
+  REPLACE_TMPFILE=0;
+  REPLACE_VASPRINTF=0;
+  REPLACE_VDPRINTF=0;
+  REPLACE_VFPRINTF=0;
+  REPLACE_VPRINTF=0;
+  REPLACE_VSNPRINTF=0;
+  REPLACE_VSPRINTF=0;
+
+
+
+  GL_GNULIB_DPRINTF=0
+
+
+
+  GL_GNULIB_FCLOSE=0
+
+
+
+  GL_GNULIB_FDOPEN=0
+
+
+
+  GL_GNULIB_FFLUSH=0
+
+
+
+  GL_GNULIB_FGETC=0
+
+
+
+  GL_GNULIB_FGETS=0
+
+
+
+  GL_GNULIB_FOPEN=0
+
+
+
+  GL_GNULIB_FPRINTF=0
+
+
+
+  GL_GNULIB_FPRINTF_POSIX=0
+
+
+
+  GL_GNULIB_FPURGE=0
+
+
+
+  GL_GNULIB_FPUTC=0
+
+
+
+  GL_GNULIB_FPUTS=0
+
+
+
+  GL_GNULIB_FREAD=0
+
+
+
+  GL_GNULIB_FREOPEN=0
+
+
+
+  GL_GNULIB_FSCANF=0
+
+
+
+  GL_GNULIB_FSEEK=0
+
+
+
+  GL_GNULIB_FSEEKO=0
+
+
+
+  GL_GNULIB_FTELL=0
+
+
+
+  GL_GNULIB_FTELLO=0
+
+
+
+  GL_GNULIB_FWRITE=0
+
+
+
+  GL_GNULIB_GETC=0
+
+
+
+  GL_GNULIB_GETCHAR=0
+
+
+
+  GL_GNULIB_GETDELIM=0
+
+
+
+  GL_GNULIB_GETLINE=0
+
+
+
+  GL_GNULIB_OBSTACK_PRINTF=0
+
+
+
+  GL_GNULIB_OBSTACK_PRINTF_POSIX=0
+
+
+
+  GL_GNULIB_PCLOSE=0
+
+
+
+  GL_GNULIB_PERROR=0
+
+
+
+  GL_GNULIB_POPEN=0
+
+
+
+  GL_GNULIB_PRINTF=0
+
+
+
+  GL_GNULIB_PRINTF_POSIX=0
+
+
+
+  GL_GNULIB_PUTC=0
+
+
+
+  GL_GNULIB_PUTCHAR=0
+
+
+
+  GL_GNULIB_PUTS=0
+
+
+
+  GL_GNULIB_REMOVE=0
+
+
+
+  GL_GNULIB_RENAME=0
+
+
+
+  GL_GNULIB_RENAMEAT=0
+
+
+
+  GL_GNULIB_SCANF=0
+
+
+
+  GL_GNULIB_SNPRINTF=0
+
+
+
+  GL_GNULIB_SPRINTF_POSIX=0
+
+
+
+  GL_GNULIB_STDIO_H_NONBLOCKING=0
+
+
+
+  GL_GNULIB_STDIO_H_SIGPIPE=0
+
+
+
+  GL_GNULIB_TMPFILE=0
+
+
+
+  GL_GNULIB_VASPRINTF=0
+
+
+
+  GL_GNULIB_VFSCANF=0
+
+
+
+  GL_GNULIB_VSCANF=0
+
+
+
+  GL_GNULIB_VDPRINTF=0
+
+
+
+  GL_GNULIB_VFPRINTF=0
+
+
+
+  GL_GNULIB_VFPRINTF_POSIX=0
+
+
+
+  GL_GNULIB_VPRINTF=0
+
+
+
+  GL_GNULIB_VPRINTF_POSIX=0
+
+
+
+  GL_GNULIB_VSNPRINTF=0
+
+
+
+  GL_GNULIB_VSPRINTF_POSIX=0
+
+
+
+  GL_GNULIB_MDA_FCLOSEALL=1
+
+
+
+  GL_GNULIB_MDA_FDOPEN=1
+
+
+
+  GL_GNULIB_MDA_FILENO=1
+
+
+
+  GL_GNULIB_MDA_GETW=1
+
+
+
+  GL_GNULIB_MDA_PUTW=1
+
+
+
+  GL_GNULIB_MDA_TEMPNAM=1
+
+
+
+
+
+    HAVE_FCHMODAT=1;
+  HAVE_FSTATAT=1;
+  HAVE_FUTIMENS=1;
+  HAVE_GETUMASK=1;
+  HAVE_LCHMOD=1;
+  HAVE_LSTAT=1;
+  HAVE_MKDIRAT=1;
+  HAVE_MKFIFO=1;
+  HAVE_MKFIFOAT=1;
+  HAVE_MKNOD=1;
+  HAVE_MKNODAT=1;
+  HAVE_UTIMENSAT=1;
+  REPLACE_FCHMODAT=0;
+  REPLACE_FSTAT=0;
+  REPLACE_FSTATAT=0;
+  REPLACE_FUTIMENS=0;
+  REPLACE_LSTAT=0;
+  REPLACE_MKDIR=0;
+  REPLACE_MKFIFO=0;
+  REPLACE_MKFIFOAT=0;
+  REPLACE_MKNOD=0;
+  REPLACE_MKNODAT=0;
+  REPLACE_STAT=0;
+  REPLACE_UTIMENSAT=0;
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether stat file-mode macros are broken" >&5
+printf %s "checking whether stat file-mode macros are broken... " >&6; }
+if test ${ac_cv_header_stat_broken+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#if defined S_ISBLK && defined S_IFDIR
+extern char c1[S_ISBLK (S_IFDIR) ? -1 : 1];
+#endif
+
+#if defined S_ISBLK && defined S_IFCHR
+extern char c2[S_ISBLK (S_IFCHR) ? -1 : 1];
+#endif
+
+#if defined S_ISLNK && defined S_IFREG
+extern char c3[S_ISLNK (S_IFREG) ? -1 : 1];
+#endif
+
+#if defined S_ISSOCK && defined S_IFREG
+extern char c4[S_ISSOCK (S_IFREG) ? -1 : 1];
+#endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_header_stat_broken=no
+else $as_nop
+  ac_cv_header_stat_broken=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stat_broken" >&5
+printf "%s\n" "$ac_cv_header_stat_broken" >&6; }
+if test $ac_cv_header_stat_broken = yes; then
+
+printf "%s\n" "#define STAT_MACROS_BROKEN 1" >>confdefs.h
+
+fi
+
+
+
+  case "$host_os" in
+    mingw*)
+                        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for 64-bit off_t" >&5
+printf %s "checking for 64-bit off_t... " >&6; }
+if test ${gl_cv_type_off_t_64+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+                int verify_off_t_size[sizeof (off_t) >= 8 ? 1 : -1];
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_type_off_t_64=yes
+else $as_nop
+  gl_cv_type_off_t_64=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_off_t_64" >&5
+printf "%s\n" "$gl_cv_type_off_t_64" >&6; }
+      if test $gl_cv_type_off_t_64 = no; then
+        WINDOWS_64_BIT_OFF_T=1
+      else
+        WINDOWS_64_BIT_OFF_T=0
+      fi
+                        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for 64-bit st_size" >&5
+printf %s "checking for 64-bit st_size... " >&6; }
+if test ${gl_cv_member_st_size_64+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+                struct stat buf;
+                int verify_st_size_size[sizeof (buf.st_size) >= 8 ? 1 : -1];
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_member_st_size_64=yes
+else $as_nop
+  gl_cv_member_st_size_64=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_member_st_size_64" >&5
+printf "%s\n" "$gl_cv_member_st_size_64" >&6; }
+      if test $gl_cv_member_st_size_64 = no; then
+        WINDOWS_64_BIT_ST_SIZE=1
+      else
+        WINDOWS_64_BIT_ST_SIZE=0
+      fi
+      ;;
+    *)
+                                                      WINDOWS_64_BIT_OFF_T=0
+      WINDOWS_64_BIT_ST_SIZE=0
+      ;;
+  esac
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C/C++ restrict keyword" >&5
+printf %s "checking for C/C++ restrict keyword... " >&6; }
+if test ${ac_cv_c_restrict+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_c_restrict=no
+   # Put '__restrict__' first, to avoid problems with glibc and non-GCC; see:
+   # https://lists.gnu.org/archive/html/bug-autoconf/2016-02/msg00006.html
+   # Put 'restrict' last, because C++ lacks it.
+   for ac_kw in __restrict__ __restrict _Restrict restrict; do
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+typedef int *int_ptr;
+	   int foo (int_ptr $ac_kw ip) { return ip[0]; }
+	   int bar (int [$ac_kw]); /* Catch GCC bug 14050.  */
+	   int bar (int ip[$ac_kw]) { return ip[0]; }
+
+int
+main (void)
+{
+int s[1];
+	   int *$ac_kw t = s;
+	   t[0] = 0;
+	   return foo (t) + bar (t);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_c_restrict=$ac_kw
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+     test "$ac_cv_c_restrict" != no && break
+   done
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_restrict" >&5
+printf "%s\n" "$ac_cv_c_restrict" >&6; }
+
+ case $ac_cv_c_restrict in
+   restrict) ;;
+   no) printf "%s\n" "#define restrict /**/" >>confdefs.h
+ ;;
+   *)  printf "%s\n" "#define restrict $ac_cv_c_restrict" >>confdefs.h
+ ;;
+ esac
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_sys_stat_h='<'sys/stat.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <sys/stat.h>" >&5
+printf %s "checking absolute name of <sys/stat.h>... " >&6; }
+if test ${gl_cv_next_sys_stat_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_sys_stat_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/stat.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'sys/stat.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_sys_stat_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_sys_stat_h
+           gl_cv_next_sys_stat_h='"'$gl_header'"'
+          else
+               gl_cv_next_sys_stat_h='<'sys/stat.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_sys_stat_h" >&5
+printf "%s\n" "$gl_cv_next_sys_stat_h" >&6; }
+     fi
+     NEXT_SYS_STAT_H=$gl_cv_next_sys_stat_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'sys/stat.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_sys_stat_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+
+    WINDOWS_STAT_TIMESPEC=0
+
+
+
+
+
+
+
+
+      ac_fn_c_check_type "$LINENO" "nlink_t" "ac_cv_type_nlink_t" "#include <sys/types.h>
+     #include <sys/stat.h>
+"
+if test "x$ac_cv_type_nlink_t" = xyes
+then :
+
+else $as_nop
+
+printf "%s\n" "#define nlink_t int" >>confdefs.h
+
+fi
+
+
+
+
+
+
+
+
+
+
+  case "$host_os" in
+    mingw*)
+      ac_fn_c_check_header_compile "$LINENO" "sdkddkver.h" "ac_cv_header_sdkddkver_h" "$ac_includes_default"
+if test "x$ac_cv_header_sdkddkver_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SDKDDKVER_H 1" >>confdefs.h
+
+fi
+
+      ;;
+  esac
+
+
+
+
+
+
+
+  GL_GNULIB_FCHMODAT=0
+
+
+
+  GL_GNULIB_FSTAT=0
+
+
+
+  GL_GNULIB_FSTATAT=0
+
+
+
+  GL_GNULIB_FUTIMENS=0
+
+
+
+  GL_GNULIB_GETUMASK=0
+
+
+
+  GL_GNULIB_LCHMOD=0
+
+
+
+  GL_GNULIB_LSTAT=0
+
+
+
+  GL_GNULIB_MKDIR=0
+
+
+
+  GL_GNULIB_MKDIRAT=0
+
+
+
+  GL_GNULIB_MKFIFO=0
+
+
+
+  GL_GNULIB_MKFIFOAT=0
+
+
+
+  GL_GNULIB_MKNOD=0
+
+
+
+  GL_GNULIB_MKNODAT=0
+
+
+
+  GL_GNULIB_STAT=0
+
+
+
+  GL_GNULIB_UTIMENSAT=0
+
+
+
+  GL_GNULIB_OVERRIDES_STRUCT_STAT=0
+
+
+
+  GL_GNULIB_MDA_CHMOD=1
+
+
+
+  GL_GNULIB_MDA_MKDIR=1
+
+
+
+  GL_GNULIB_MDA_UMASK=1
+
+
+
+
+         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether lstat correctly handles trailing slash" >&5
+printf %s "checking whether lstat correctly handles trailing slash... " >&6; }
+if test ${gl_cv_func_lstat_dereferences_slashed_symlink+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  rm -f conftest.sym conftest.file
+     echo >conftest.file
+     if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+          linux-* | linux)
+            # Guess yes on Linux systems.
+            gl_cv_func_lstat_dereferences_slashed_symlink="guessing yes" ;;
+          *-gnu* | gnu*)
+            # Guess yes on glibc systems.
+            gl_cv_func_lstat_dereferences_slashed_symlink="guessing yes" ;;
+          mingw*)
+            # Guess no on native Windows.
+            gl_cv_func_lstat_dereferences_slashed_symlink="guessing no" ;;
+          *)
+            # If we don't know, obey --enable-cross-guesses.
+            gl_cv_func_lstat_dereferences_slashed_symlink="$gl_cross_guess_normal" ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main (void)
+{
+struct stat sbuf;
+            if (symlink ("conftest.file", "conftest.sym") != 0)
+              return 1;
+            /* Linux will dereference the symlink and fail, as required by
+               POSIX.  That is better in the sense that it means we will not
+               have to compile and use the lstat wrapper.  */
+            return lstat ("conftest.sym/", &sbuf) == 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_lstat_dereferences_slashed_symlink=yes
+else $as_nop
+  gl_cv_func_lstat_dereferences_slashed_symlink=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+     rm -f conftest.sym conftest.file
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_lstat_dereferences_slashed_symlink" >&5
+printf "%s\n" "$gl_cv_func_lstat_dereferences_slashed_symlink" >&6; }
+  case "$gl_cv_func_lstat_dereferences_slashed_symlink" in
+    *yes)
+
+printf "%s\n" "#define LSTAT_FOLLOWS_SLASHED_SYMLINK 1" >>confdefs.h
+
+      ;;
+  esac
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for O_CLOEXEC" >&5
+printf %s "checking for O_CLOEXEC... " >&6; }
+if test ${gl_cv_macro_O_CLOEXEC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <fcntl.h>
+                          #ifndef O_CLOEXEC
+                            choke me;
+                          #endif
+
+int
+main (void)
+{
+return O_CLOEXEC;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_macro_O_CLOEXEC=yes
+else $as_nop
+  gl_cv_macro_O_CLOEXEC=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_macro_O_CLOEXEC" >&5
+printf "%s\n" "$gl_cv_macro_O_CLOEXEC" >&6; }
+
+
+
+
+
+   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether getcwd (NULL, 0) allocates memory for result" >&5
+printf %s "checking whether getcwd (NULL, 0) allocates memory for result... " >&6; }
+if test ${gl_cv_func_getcwd_null+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                           # Guess yes on glibc systems.
+            *-gnu* | gnu*) gl_cv_func_getcwd_null="guessing yes";;
+                           # Guess yes on musl systems.
+            *-musl*)       gl_cv_func_getcwd_null="guessing yes";;
+                           # Guess yes on Cygwin.
+            cygwin*)       gl_cv_func_getcwd_null="guessing yes";;
+                           # If we don't know, obey --enable-cross-guesses.
+            *)             gl_cv_func_getcwd_null="$gl_cross_guess_normal";;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#	 include <stdlib.h>
+#        if HAVE_UNISTD_H
+#         include <unistd.h>
+#        else /* on Windows with MSVC */
+#         include <direct.h>
+#        endif
+
+
+$gl_mda_defines
+
+#        ifndef getcwd
+         char *getcwd ();
+#        endif
+
+int
+main (void)
+{
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* mingw cwd does not start with '/', but _getcwd does allocate.
+   However, mingw fails to honor non-zero size.  */
+#else
+           if (chdir ("/") != 0)
+             return 1;
+           else
+             {
+               char *f = getcwd (NULL, 0);
+               if (! f)
+                 return 2;
+               if (f[0] != '/')
+                 { free (f); return 3; }
+               if (f[1] != '\0')
+                 { free (f); return 4; }
+               free (f);
+               return 0;
+             }
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_getcwd_null=yes
+else $as_nop
+  gl_cv_func_getcwd_null=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_getcwd_null" >&5
+printf "%s\n" "$gl_cv_func_getcwd_null" >&6; }
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getcwd with POSIX signature" >&5
+printf %s "checking for getcwd with POSIX signature... " >&6; }
+if test ${gl_cv_func_getcwd_posix_signature+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <unistd.h>
+
+
+$gl_mda_defines
+
+int
+main (void)
+{
+extern
+           #ifdef __cplusplus
+           "C"
+           #endif
+           char *getcwd (char *, size_t);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_getcwd_posix_signature=yes
+else $as_nop
+  gl_cv_func_getcwd_posix_signature=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_getcwd_posix_signature" >&5
+printf "%s\n" "$gl_cv_func_getcwd_posix_signature" >&6; }
+
+
+ac_fn_check_decl "$LINENO" "getdtablesize" "ac_cv_have_decl_getdtablesize" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_getdtablesize" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_GETDTABLESIZE $ac_have_decl" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_getopt_h='<'getopt.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <getopt.h>" >&5
+printf %s "checking absolute name of <getopt.h>... " >&6; }
+if test ${gl_cv_next_getopt_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_getopt_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <getopt.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'getopt.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_getopt_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_getopt_h
+           gl_cv_next_getopt_h='"'$gl_header'"'
+          else
+               gl_cv_next_getopt_h='<'getopt.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_getopt_h" >&5
+printf "%s\n" "$gl_cv_next_getopt_h" >&6; }
+     fi
+     NEXT_GETOPT_H=$gl_cv_next_getopt_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'getopt.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_getopt_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_GETOPT_H=$gl_next_as_first_directive
+
+
+
+
+  if test $ac_cv_header_getopt_h = yes; then
+    HAVE_GETOPT_H=1
+  else
+    HAVE_GETOPT_H=0
+  fi
+
+
+  gl_replace_getopt=
+
+    if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
+           for ac_header in getopt.h
+do :
+  ac_fn_c_check_header_compile "$LINENO" "getopt.h" "ac_cv_header_getopt_h" "$ac_includes_default"
+if test "x$ac_cv_header_getopt_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETOPT_H 1" >>confdefs.h
+
+else $as_nop
+  gl_replace_getopt=yes
+fi
+
+done
+  fi
+
+    if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
+
+  for ac_func in getopt_long_only
+do :
+  ac_fn_c_check_func "$LINENO" "getopt_long_only" "ac_cv_func_getopt_long_only"
+if test "x$ac_cv_func_getopt_long_only" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETOPT_LONG_ONLY 1" >>confdefs.h
+
+else $as_nop
+  gl_replace_getopt=yes
+fi
+
+done
+  fi
+
+          if test -z "$gl_replace_getopt"; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether getopt is POSIX compatible" >&5
+printf %s "checking whether getopt is POSIX compatible... " >&6; }
+if test ${gl_cv_func_getopt_posix+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                                                if test $cross_compiling = no; then
+                              if test "$cross_compiling" = yes
+then :
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot run test program while cross compiling
+See \`config.log' for more details" "$LINENO" 5; }
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main ()
+{
+  static char program[] = "program";
+  static char a[] = "-a";
+  static char foo[] = "foo";
+  static char bar[] = "bar";
+  char *argv[] = { program, a, foo, bar, NULL };
+  int c;
+
+  c = getopt (4, argv, "ab");
+  if (!(c == 'a'))
+    return 1;
+  c = getopt (4, argv, "ab");
+  if (!(c == -1))
+    return 2;
+  if (!(optind == 2))
+    return 3;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_getopt_posix=maybe
+else $as_nop
+  gl_cv_func_getopt_posix=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+          if test $gl_cv_func_getopt_posix = maybe; then
+                                    if test "$cross_compiling" = yes
+then :
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot run test program while cross compiling
+See \`config.log' for more details" "$LINENO" 5; }
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main ()
+{
+  static char program[] = "program";
+  static char donald[] = "donald";
+  static char p[] = "-p";
+  static char billy[] = "billy";
+  static char duck[] = "duck";
+  static char a[] = "-a";
+  static char bar[] = "bar";
+  char *argv[] = { program, donald, p, billy, duck, a, bar, NULL };
+  int c;
+
+  c = getopt (7, argv, "+abp:q:");
+  if (!(c == -1))
+    return 4;
+  if (!(strcmp (argv[0], "program") == 0))
+    return 5;
+  if (!(strcmp (argv[1], "donald") == 0))
+    return 6;
+  if (!(strcmp (argv[2], "-p") == 0))
+    return 7;
+  if (!(strcmp (argv[3], "billy") == 0))
+    return 8;
+  if (!(strcmp (argv[4], "duck") == 0))
+    return 9;
+  if (!(strcmp (argv[5], "-a") == 0))
+    return 10;
+  if (!(strcmp (argv[6], "bar") == 0))
+    return 11;
+  if (!(optind == 1))
+    return 12;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_getopt_posix=maybe
+else $as_nop
+  gl_cv_func_getopt_posix=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+          fi
+          if test $gl_cv_func_getopt_posix = maybe; then
+                        if test "$cross_compiling" = yes
+then :
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot run test program while cross compiling
+See \`config.log' for more details" "$LINENO" 5; }
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main ()
+{
+  static char program[] = "program";
+  static char ab[] = "-ab";
+  char *argv[3] = { program, ab, NULL };
+  if (getopt (2, argv, "ab:") != 'a')
+    return 13;
+  if (getopt (2, argv, "ab:") != '?')
+    return 14;
+  if (optopt != 'b')
+    return 15;
+  if (optind != 2)
+    return 16;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_getopt_posix=yes
+else $as_nop
+  gl_cv_func_getopt_posix=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+          fi
+        else
+          case "$host_os" in
+            darwin* | aix* | mingw*) gl_cv_func_getopt_posix="guessing no";;
+            *)                       gl_cv_func_getopt_posix="guessing yes";;
+          esac
+        fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_getopt_posix" >&5
+printf "%s\n" "$gl_cv_func_getopt_posix" >&6; }
+    case "$gl_cv_func_getopt_posix" in
+      *no) gl_replace_getopt=yes ;;
+    esac
+  fi
+
+  if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working GNU getopt function" >&5
+printf %s "checking for working GNU getopt function... " >&6; }
+if test ${gl_cv_func_getopt_gnu+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  # Even with POSIXLY_CORRECT, the GNU extension of leading '-' in the
+       # optstring is necessary for programs like m4 that have POSIX-mandated
+       # semantics for supporting options interspersed with files.
+       # Also, since getopt_long is a GNU extension, we require optind=0.
+       # Bash ties 'set -o posix' to a non-exported POSIXLY_CORRECT;
+       # so take care to revert to the correct (non-)export state.
+       gl_awk_probe='BEGIN { if ("POSIXLY_CORRECT" in ENVIRON) print "x" }'
+       case ${POSIXLY_CORRECT+x}`$AWK "$gl_awk_probe" </dev/null` in
+         xx) gl_had_POSIXLY_CORRECT=exported ;;
+         x)  gl_had_POSIXLY_CORRECT=yes      ;;
+         *)  gl_had_POSIXLY_CORRECT=         ;;
+       esac
+       POSIXLY_CORRECT=1
+       export POSIXLY_CORRECT
+       if test "$cross_compiling" = yes
+then :
+                             gl_cv_func_getopt_gnu="$gl_cross_guess_normal"
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <getopt.h>
+                           #include <stddef.h>
+                           #include <string.h>
+
+#include <stdlib.h>
+#if defined __MACH__ && defined __APPLE__
+/* Avoid a crash on Mac OS X.  */
+#include <mach/mach.h>
+#include <mach/mach_error.h>
+#include <mach/thread_status.h>
+#include <mach/exception.h>
+#include <mach/task.h>
+#include <pthread.h>
+/* The exception port on which our thread listens.  */
+static mach_port_t our_exception_port;
+/* The main function of the thread listening for exceptions of type
+   EXC_BAD_ACCESS.  */
+static void *
+mach_exception_thread (void *arg)
+{
+  /* Buffer for a message to be received.  */
+  struct {
+    mach_msg_header_t head;
+    mach_msg_body_t msgh_body;
+    char data[1024];
+  } msg;
+  mach_msg_return_t retval;
+  /* Wait for a message on the exception port.  */
+  retval = mach_msg (&msg.head, MACH_RCV_MSG | MACH_RCV_LARGE, 0, sizeof (msg),
+                     our_exception_port, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
+  if (retval != MACH_MSG_SUCCESS)
+    abort ();
+  exit (1);
+}
+static void
+nocrash_init (void)
+{
+  mach_port_t self = mach_task_self ();
+  /* Allocate a port on which the thread shall listen for exceptions.  */
+  if (mach_port_allocate (self, MACH_PORT_RIGHT_RECEIVE, &our_exception_port)
+      == KERN_SUCCESS) {
+    /* See https://web.mit.edu/darwin/src/modules/xnu/osfmk/man/mach_port_insert_right.html.  */
+    if (mach_port_insert_right (self, our_exception_port, our_exception_port,
+                                MACH_MSG_TYPE_MAKE_SEND)
+        == KERN_SUCCESS) {
+      /* The exceptions we want to catch.  Only EXC_BAD_ACCESS is interesting
+         for us.  */
+      exception_mask_t mask = EXC_MASK_BAD_ACCESS;
+      /* Create the thread listening on the exception port.  */
+      pthread_attr_t attr;
+      pthread_t thread;
+      if (pthread_attr_init (&attr) == 0
+          && pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED) == 0
+          && pthread_create (&thread, &attr, mach_exception_thread, NULL) == 0) {
+        pthread_attr_destroy (&attr);
+        /* Replace the exception port info for these exceptions with our own.
+           Note that we replace the exception port for the entire task, not only
+           for a particular thread.  This has the effect that when our exception
+           port gets the message, the thread specific exception port has already
+           been asked, and we don't need to bother about it.
+           See https://web.mit.edu/darwin/src/modules/xnu/osfmk/man/task_set_exception_ports.html.  */
+        task_set_exception_ports (self, mask, our_exception_port,
+                                  EXCEPTION_DEFAULT, MACHINE_THREAD_STATE);
+      }
+    }
+  }
+}
+#elif defined _WIN32 && ! defined __CYGWIN__
+/* Avoid a crash on native Windows.  */
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <winerror.h>
+static LONG WINAPI
+exception_filter (EXCEPTION_POINTERS *ExceptionInfo)
+{
+  switch (ExceptionInfo->ExceptionRecord->ExceptionCode)
+    {
+    case EXCEPTION_ACCESS_VIOLATION:
+    case EXCEPTION_IN_PAGE_ERROR:
+    case EXCEPTION_STACK_OVERFLOW:
+    case EXCEPTION_GUARD_PAGE:
+    case EXCEPTION_PRIV_INSTRUCTION:
+    case EXCEPTION_ILLEGAL_INSTRUCTION:
+    case EXCEPTION_DATATYPE_MISALIGNMENT:
+    case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
+    case EXCEPTION_NONCONTINUABLE_EXCEPTION:
+      exit (1);
+    }
+  return EXCEPTION_CONTINUE_SEARCH;
+}
+static void
+nocrash_init (void)
+{
+  SetUnhandledExceptionFilter ((LPTOP_LEVEL_EXCEPTION_FILTER) exception_filter);
+}
+#else
+/* Avoid a crash on POSIX systems.  */
+#include <signal.h>
+#include <unistd.h>
+/* A POSIX signal handler.  */
+static void
+exception_handler (int sig)
+{
+  _exit (1);
+}
+static void
+nocrash_init (void)
+{
+#ifdef SIGSEGV
+  signal (SIGSEGV, exception_handler);
+#endif
+#ifdef SIGBUS
+  signal (SIGBUS, exception_handler);
+#endif
+}
+#endif
+
+
+int
+main (void)
+{
+
+             int result = 0;
+
+             nocrash_init();
+
+             /* This code succeeds on glibc 2.8, OpenBSD 4.0, Cygwin, mingw,
+                and fails on Mac OS X 10.5, AIX 5.2, HP-UX 11, IRIX 6.5,
+                OSF/1 5.1, Solaris 10.  */
+             {
+               static char conftest[] = "conftest";
+               static char plus[] = "-+";
+               char *argv[3] = { conftest, plus, NULL };
+               opterr = 0;
+               if (getopt (2, argv, "+a") != '?')
+                 result |= 1;
+             }
+             /* This code succeeds on glibc 2.8, mingw,
+                and fails on Mac OS X 10.5, OpenBSD 4.0, AIX 5.2, HP-UX 11,
+                IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.5.x.  */
+             {
+               static char program[] = "program";
+               static char p[] = "-p";
+               static char foo[] = "foo";
+               static char bar[] = "bar";
+               char *argv[] = { program, p, foo, bar, NULL };
+
+               optind = 1;
+               if (getopt (4, argv, "p::") != 'p')
+                 result |= 2;
+               else if (optarg != NULL)
+                 result |= 4;
+               else if (getopt (4, argv, "p::") != -1)
+                 result |= 6;
+               else if (optind != 2)
+                 result |= 8;
+             }
+             /* This code succeeds on glibc 2.8 and fails on Cygwin 1.7.0.  */
+             {
+               static char program[] = "program";
+               static char foo[] = "foo";
+               static char p[] = "-p";
+               char *argv[] = { program, foo, p, NULL };
+               optind = 0;
+               if (getopt (3, argv, "-p") != 1)
+                 result |= 16;
+               else if (getopt (3, argv, "-p") != 'p')
+                 result |= 16;
+             }
+             /* This code fails on glibc 2.11.  */
+             {
+               static char program[] = "program";
+               static char b[] = "-b";
+               static char a[] = "-a";
+               char *argv[] = { program, b, a, NULL };
+               optind = opterr = 0;
+               if (getopt (3, argv, "+:a:b") != 'b')
+                 result |= 32;
+               else if (getopt (3, argv, "+:a:b") != ':')
+                 result |= 32;
+             }
+             /* This code dumps core on glibc 2.14.  */
+             {
+               static char program[] = "program";
+               static char w[] = "-W";
+               static char dummy[] = "dummy";
+               char *argv[] = { program, w, dummy, NULL };
+               optind = opterr = 1;
+               if (getopt (3, argv, "W;") != 'W')
+                 result |= 64;
+             }
+             return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_getopt_gnu=yes
+else $as_nop
+  gl_cv_func_getopt_gnu=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+       case $gl_had_POSIXLY_CORRECT in
+         exported) ;;
+         yes) { POSIXLY_CORRECT=; unset POSIXLY_CORRECT;}; POSIXLY_CORRECT=1 ;;
+         *) { POSIXLY_CORRECT=; unset POSIXLY_CORRECT;} ;;
+       esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_getopt_gnu" >&5
+printf "%s\n" "$gl_cv_func_getopt_gnu" >&6; }
+    if test "$gl_cv_func_getopt_gnu" != yes; then
+      gl_replace_getopt=yes
+    else
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working GNU getopt_long function" >&5
+printf %s "checking for working GNU getopt_long function... " >&6; }
+if test ${gl_cv_func_getopt_long_gnu+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+              case "$host_os" in
+              openbsd*) gl_cv_func_getopt_long_gnu="guessing no";;
+              *)        gl_cv_func_getopt_long_gnu="guessing yes";;
+            esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <getopt.h>
+                #include <stddef.h>
+                #include <string.h>
+
+int
+main (void)
+{
+static const struct option long_options[] =
+                  {
+                    { "xtremely-",no_argument,       NULL, 1003 },
+                    { "xtra",     no_argument,       NULL, 1001 },
+                    { "xtreme",   no_argument,       NULL, 1002 },
+                    { "xtremely", no_argument,       NULL, 1003 },
+                    { NULL,       0,                 NULL, 0 }
+                  };
+                /* This code fails on OpenBSD 5.0.  */
+                {
+                  static char program[] = "program";
+                  static char xtremel[] = "--xtremel";
+                  char *argv[] = { program, xtremel, NULL };
+                  int option_index;
+                  optind = 1; opterr = 0;
+                  if (getopt_long (2, argv, "", long_options, &option_index) != 1003)
+                    return 1;
+                }
+                return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_getopt_long_gnu=yes
+else $as_nop
+  gl_cv_func_getopt_long_gnu=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_getopt_long_gnu" >&5
+printf "%s\n" "$gl_cv_func_getopt_long_gnu" >&6; }
+      case "$gl_cv_func_getopt_long_gnu" in
+        *yes) ;;
+        *) gl_replace_getopt=yes ;;
+      esac
+    fi
+  fi
+
+
+
+
+
+
+
+
+  if test -z "$gl_pthreadlib_body_done"; then
+    gl_pthread_api=no
+    LIBPTHREAD=
+    LIBPMULTITHREAD=
+    # On OSF/1, the compiler needs the flag -pthread or -D_REENTRANT so that
+    # it groks <pthread.h>. It's added above, in gl_ANYTHREADLIB_EARLY.
+    ac_fn_c_check_header_compile "$LINENO" "pthread.h" "ac_cv_header_pthread_h" "$ac_includes_default"
+if test "x$ac_cv_header_pthread_h" = xyes
+then :
+  gl_have_pthread_h=yes
+else $as_nop
+  gl_have_pthread_h=no
+fi
+
+    if test "$gl_have_pthread_h" = yes; then
+      # Other possible tests:
+      #   -lpthreads (FSU threads, PCthreads)
+      #   -lgthreads
+      # Test whether both pthread_mutex_lock and pthread_mutexattr_init exist
+      # in libc. IRIX 6.5 has the first one in both libc and libpthread, but
+      # the second one only in libpthread, and lock.c needs it.
+      #
+      # If -pthread works, prefer it to -lpthread, since Ubuntu 14.04
+      # needs -pthread for some reason.  See:
+      # https://lists.gnu.org/r/bug-gnulib/2014-09/msg00023.html
+      save_LIBS=$LIBS
+      for gl_pthread in '' '-pthread'; do
+        LIBS="$LIBS $gl_pthread"
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+               pthread_mutex_t m;
+               pthread_mutexattr_t ma;
+
+int
+main (void)
+{
+pthread_mutex_lock (&m);
+               pthread_mutexattr_init (&ma);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_pthread_api=yes
+           LIBPTHREAD=$gl_pthread
+           LIBPMULTITHREAD=$gl_pthread
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+        LIBS=$save_LIBS
+        test $gl_pthread_api = yes && break
+      done
+      echo "$as_me:13017: gl_pthread_api=$gl_pthread_api" >&5
+      echo "$as_me:13018: LIBPTHREAD=$LIBPTHREAD" >&5
+
+      gl_pthread_in_glibc=no
+      # On Linux with glibc >= 2.34, libc contains the fully functional
+      # pthread functions.
+      case "$host_os" in
+        linux*)
+          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <features.h>
+             #ifdef __GNU_LIBRARY__
+              #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 34) || (__GLIBC__ > 2)
+               Lucky user
+              #endif
+             #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Lucky user" >/dev/null 2>&1
+then :
+  gl_pthread_in_glibc=yes
+fi
+rm -rf conftest*
+
+          ;;
+      esac
+      echo "$as_me:13044: gl_pthread_in_glibc=$gl_pthread_in_glibc" >&5
+
+      # Test for libpthread by looking for pthread_kill. (Not pthread_self,
+      # since it is defined as a macro on OSF/1.)
+      if test $gl_pthread_api = yes && test -z "$LIBPTHREAD"; then
+        # The program links fine without libpthread. But it may actually
+        # need to link with libpthread in order to create multiple threads.
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_kill in -lpthread" >&5
+printf %s "checking for pthread_kill in -lpthread... " >&6; }
+if test ${ac_cv_lib_pthread_pthread_kill+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lpthread  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_kill ();
+int
+main (void)
+{
+return pthread_kill ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_pthread_pthread_kill=yes
+else $as_nop
+  ac_cv_lib_pthread_pthread_kill=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthread_pthread_kill" >&5
+printf "%s\n" "$ac_cv_lib_pthread_pthread_kill" >&6; }
+if test "x$ac_cv_lib_pthread_pthread_kill" = xyes
+then :
+  if test $gl_pthread_in_glibc = yes; then
+             LIBPMULTITHREAD=
+           else
+             LIBPMULTITHREAD=-lpthread
+             # On Solaris and HP-UX, most pthread functions exist also in libc.
+             # Therefore pthread_in_use() needs to actually try to create a
+             # thread: pthread_create from libc will fail, whereas
+             # pthread_create will actually create a thread.
+             # On Solaris 10 or newer, this test is no longer needed, because
+             # libc contains the fully functional pthread functions.
+             case "$host_os" in
+               solaris | solaris2.1-9 | solaris2.1-9.* | hpux*)
+
+printf "%s\n" "#define PTHREAD_IN_USE_DETECTION_HARD 1" >>confdefs.h
+
+             esac
+           fi
+
+fi
+
+      elif test $gl_pthread_api != yes; then
+        # Some library is needed. Try libpthread and libc_r.
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_kill in -lpthread" >&5
+printf %s "checking for pthread_kill in -lpthread... " >&6; }
+if test ${ac_cv_lib_pthread_pthread_kill+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lpthread  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_kill ();
+int
+main (void)
+{
+return pthread_kill ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_pthread_pthread_kill=yes
+else $as_nop
+  ac_cv_lib_pthread_pthread_kill=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthread_pthread_kill" >&5
+printf "%s\n" "$ac_cv_lib_pthread_pthread_kill" >&6; }
+if test "x$ac_cv_lib_pthread_pthread_kill" = xyes
+then :
+  gl_pthread_api=yes
+           LIBPTHREAD=-lpthread
+           LIBPMULTITHREAD=-lpthread
+fi
+
+        if test $gl_pthread_api != yes; then
+          # For FreeBSD 4.
+          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_kill in -lc_r" >&5
+printf %s "checking for pthread_kill in -lc_r... " >&6; }
+if test ${ac_cv_lib_c_r_pthread_kill+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lc_r  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_kill ();
+int
+main (void)
+{
+return pthread_kill ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_c_r_pthread_kill=yes
+else $as_nop
+  ac_cv_lib_c_r_pthread_kill=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_c_r_pthread_kill" >&5
+printf "%s\n" "$ac_cv_lib_c_r_pthread_kill" >&6; }
+if test "x$ac_cv_lib_c_r_pthread_kill" = xyes
+then :
+  gl_pthread_api=yes
+             LIBPTHREAD=-lc_r
+             LIBPMULTITHREAD=-lc_r
+fi
+
+        fi
+      fi
+      echo "$as_me:13198: LIBPMULTITHREAD=$LIBPMULTITHREAD" >&5
+    fi
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether POSIX threads API is available" >&5
+printf %s "checking whether POSIX threads API is available... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_pthread_api" >&5
+printf "%s\n" "$gl_pthread_api" >&6; }
+
+
+    if test $gl_pthread_api = yes; then
+
+printf "%s\n" "#define HAVE_PTHREAD_API 1" >>confdefs.h
+
+    fi
+
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sched.h>
+int
+main (void)
+{
+sched_yield ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  LIB_SCHED_YIELD=
+
+else $as_nop
+         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sched_yield in -lrt" >&5
+printf %s "checking for sched_yield in -lrt... " >&6; }
+if test ${ac_cv_lib_rt_sched_yield+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lrt  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char sched_yield ();
+int
+main (void)
+{
+return sched_yield ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_rt_sched_yield=yes
+else $as_nop
+  ac_cv_lib_rt_sched_yield=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_sched_yield" >&5
+printf "%s\n" "$ac_cv_lib_rt_sched_yield" >&6; }
+if test "x$ac_cv_lib_rt_sched_yield" = xyes
+then :
+  LIB_SCHED_YIELD=-lrt
+else $as_nop
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sched_yield in -lposix4" >&5
+printf %s "checking for sched_yield in -lposix4... " >&6; }
+if test ${ac_cv_lib_posix4_sched_yield+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lposix4  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char sched_yield ();
+int
+main (void)
+{
+return sched_yield ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_posix4_sched_yield=yes
+else $as_nop
+  ac_cv_lib_posix4_sched_yield=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_posix4_sched_yield" >&5
+printf "%s\n" "$ac_cv_lib_posix4_sched_yield" >&6; }
+if test "x$ac_cv_lib_posix4_sched_yield" = xyes
+then :
+  LIB_SCHED_YIELD=-lposix4
+fi
+
+fi
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+
+    gl_pthreadlib_body_done=done
+  fi
+
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether setlocale (LC_ALL, NULL) is multithread-safe" >&5
+printf %s "checking whether setlocale (LC_ALL, NULL) is multithread-safe... " >&6; }
+if test ${gl_cv_func_setlocale_null_all_mtsafe+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case "$host_os" in
+       # Guess no on musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin.
+       *-musl* | darwin* | freebsd* | midnightbsd* | netbsd* | openbsd* | aix* | haiku* | cygwin*)
+         gl_cv_func_setlocale_null_all_mtsafe=no ;;
+       # Guess yes on glibc, HP-UX, IRIX, Solaris, native Windows.
+       *-gnu* | gnu* | hpux* | irix* | solaris* | mingw*)
+         gl_cv_func_setlocale_null_all_mtsafe=yes ;;
+       # If we don't know, obey --enable-cross-guesses.
+       *)
+         gl_cv_func_setlocale_null_all_mtsafe="$gl_cross_guess_normal" ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_setlocale_null_all_mtsafe" >&5
+printf "%s\n" "$gl_cv_func_setlocale_null_all_mtsafe" >&6; }
+    case "$host_os" in
+    mingw*) ;;
+    *)
+      if test $gl_pthread_api = no && test $ac_cv_header_threads_h = no; then
+        gl_cv_func_setlocale_null_all_mtsafe="trivially yes"
+      fi
+      ;;
+  esac
+  case "$gl_cv_func_setlocale_null_all_mtsafe" in
+    *yes) SETLOCALE_NULL_ALL_MTSAFE=1 ;;
+    *)    SETLOCALE_NULL_ALL_MTSAFE=0 ;;
+  esac
+
+printf "%s\n" "#define SETLOCALE_NULL_ALL_MTSAFE $SETLOCALE_NULL_ALL_MTSAFE" >>confdefs.h
+
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether setlocale (category, NULL) is multithread-safe" >&5
+printf %s "checking whether setlocale (category, NULL) is multithread-safe... " >&6; }
+if test ${gl_cv_func_setlocale_null_one_mtsafe+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case "$host_os" in
+       # Guess no on OpenBSD, AIX.
+       openbsd* | aix*)
+         gl_cv_func_setlocale_null_one_mtsafe=no ;;
+       # Guess yes on glibc, musl libc, macOS, FreeBSD, NetBSD, HP-UX, IRIX, Solaris, Haiku, Cygwin, native Windows.
+       *-gnu* | gnu* | *-musl* | darwin* | freebsd* | midnightbsd* | netbsd* | hpux* | irix* | solaris* | haiku* | cygwin* | mingw*)
+         gl_cv_func_setlocale_null_one_mtsafe=yes ;;
+       # If we don't know, obey --enable-cross-guesses.
+       *)
+         gl_cv_func_setlocale_null_one_mtsafe="$gl_cross_guess_normal" ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_setlocale_null_one_mtsafe" >&5
+printf "%s\n" "$gl_cv_func_setlocale_null_one_mtsafe" >&6; }
+    case "$host_os" in
+    mingw*) ;;
+    *)
+      if test $gl_pthread_api = no && test $ac_cv_header_threads_h = no; then
+        gl_cv_func_setlocale_null_one_mtsafe="trivially yes"
+      fi
+      ;;
+  esac
+  case "$gl_cv_func_setlocale_null_one_mtsafe" in
+    *yes) SETLOCALE_NULL_ONE_MTSAFE=1 ;;
+    *)    SETLOCALE_NULL_ONE_MTSAFE=0 ;;
+  esac
+
+printf "%s\n" "#define SETLOCALE_NULL_ONE_MTSAFE $SETLOCALE_NULL_ONE_MTSAFE" >>confdefs.h
+
+
+    if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then
+    case "$host_os" in
+      mingw*) LIB_SETLOCALE_NULL= ;;
+      *)
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether imported symbols can be declared weak" >&5
+printf %s "checking whether imported symbols can be declared weak... " >&6; }
+if test ${gl_cv_have_weak+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_cv_have_weak=no
+          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern void xyzzy ();
+#pragma weak xyzzy
+int
+main (void)
+{
+xyzzy();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_have_weak=maybe
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+     if test $gl_cv_have_weak = maybe; then
+                     if test "$cross_compiling" = yes
+then :
+                      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __ELF__
+             Extensible Linking Format
+             #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Extensible Linking Format" >/dev/null 2>&1
+then :
+  gl_cv_have_weak="guessing yes"
+else $as_nop
+  gl_cv_have_weak="guessing no"
+fi
+rm -rf conftest*
+
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#pragma weak fputs
+int main ()
+{
+  return (fputs == NULL);
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_have_weak=yes
+else $as_nop
+  gl_cv_have_weak=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+     fi
+          case " $LDFLAGS " in
+       *" -static "*) gl_cv_have_weak=no ;;
+     esac
+                    case "$gl_cv_have_weak" in
+       *yes)
+         case "$host_os" in
+           freebsd* | dragonfly* | midnightbsd*)
+             : > conftest1.c
+             $CC $CPPFLAGS $CFLAGS $LDFLAGS -fPIC -shared -o libempty.so conftest1.c -lpthread >&5 2>&1
+             cat <<EOF > conftest2.c
+#include <pthread.h>
+#pragma weak pthread_mutexattr_gettype
+int main ()
+{
+  return (pthread_mutexattr_gettype != NULL);
+}
+EOF
+             $CC $CPPFLAGS $CFLAGS $LDFLAGS -o conftest conftest2.c libempty.so >&5 2>&1 \
+               || gl_cv_have_weak=no
+             rm -f conftest1.c libempty.so conftest2.c conftest
+             ;;
+         esac
+         ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_have_weak" >&5
+printf "%s\n" "$gl_cv_have_weak" >&6; }
+  case "$gl_cv_have_weak" in
+    *yes)
+
+printf "%s\n" "#define HAVE_WEAK_SYMBOLS 1" >>confdefs.h
+
+      ;;
+  esac
+
+        case "$gl_cv_have_weak" in
+          *yes) LIB_SETLOCALE_NULL= ;;
+          *)    LIB_SETLOCALE_NULL="$LIBPTHREAD" ;;
+        esac
+        ;;
+    esac
+  else
+    LIB_SETLOCALE_NULL=
+  fi
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#ifdef _MSC_VER
+MicrosoftCompiler
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "MicrosoftCompiler" >/dev/null 2>&1
+then :
+            rm -f conftest*
+     echo 'int dummy;' > conftest.c
+     { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; } >/dev/null 2>&1
+     if test -f conftest.o; then
+       gl_asmext='s'
+       gl_c_asm_opt='-S'
+     else
+       gl_asmext='asm'
+       gl_c_asm_opt='-c -Fa'
+     fi
+     rm -f conftest*
+
+else $as_nop
+  gl_asmext='s'
+     gl_c_asm_opt='-S'
+
+fi
+rm -rf conftest*
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking host CPU and C ABI" >&5
+printf %s "checking host CPU and C ABI... " >&6; }
+if test ${gl_cv_host_cpu_c_abi+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case "$host_cpu" in
+
+       i[34567]86 )
+         gl_cv_host_cpu_c_abi=i386
+         ;;
+
+       x86_64 )
+         # On x86_64 systems, the C compiler may be generating code in one of
+         # these ABIs:
+         # - 64-bit instruction set, 64-bit pointers, 64-bit 'long': x86_64.
+         # - 64-bit instruction set, 64-bit pointers, 32-bit 'long': x86_64
+         #   with native Windows (mingw, MSVC).
+         # - 64-bit instruction set, 32-bit pointers, 32-bit 'long': x86_64-x32.
+         # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': i386.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if (defined __x86_64__ || defined __amd64__ \
+                     || defined _M_X64 || defined _M_AMD64)
+                 int ok;
+                #else
+                 error fail
+                #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __ILP32__ || defined _ILP32
+                    int ok;
+                   #else
+                    error fail
+                   #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi=x86_64-x32
+else $as_nop
+  gl_cv_host_cpu_c_abi=x86_64
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+else $as_nop
+  gl_cv_host_cpu_c_abi=i386
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         ;;
+
+       alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] )
+         gl_cv_host_cpu_c_abi=alpha
+         ;;
+
+       arm* | aarch64 )
+         # Assume arm with EABI.
+         # On arm64 systems, the C compiler may be generating code in one of
+         # these ABIs:
+         # - aarch64 instruction set, 64-bit pointers, 64-bit 'long': arm64.
+         # - aarch64 instruction set, 32-bit pointers, 32-bit 'long': arm64-ilp32.
+         # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': arm or armhf.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __aarch64__
+                 int ok;
+                #else
+                 error fail
+                #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __ILP32__ || defined _ILP32
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi=arm64-ilp32
+else $as_nop
+  gl_cv_host_cpu_c_abi=arm64
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+else $as_nop
+  # Don't distinguish little-endian and big-endian arm, since they
+            # don't require different machine code for simple operations and
+            # since the user can distinguish them through the preprocessor
+            # defines __ARMEL__ vs. __ARMEB__.
+            # But distinguish arm which passes floating-point arguments and
+            # return values in integer registers (r0, r1, ...) - this is
+            # gcc -mfloat-abi=soft or gcc -mfloat-abi=softfp - from arm which
+            # passes them in float registers (s0, s1, ...) and double registers
+            # (d0, d1, ...) - this is gcc -mfloat-abi=hard. GCC 4.6 or newer
+            # sets the preprocessor defines __ARM_PCS (for the first case) and
+            # __ARM_PCS_VFP (for the second case), but older GCC does not.
+            echo 'double ddd; void func (double dd) { ddd = dd; }' > conftest.c
+            # Look for a reference to the register d0 in the .s file.
+            { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $gl_c_asm_opt conftest.c'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; } >/dev/null 2>&1
+            if LC_ALL=C grep 'd0,' conftest.$gl_asmext >/dev/null; then
+              gl_cv_host_cpu_c_abi=armhf
+            else
+              gl_cv_host_cpu_c_abi=arm
+            fi
+            rm -f conftest*
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         ;;
+
+       hppa1.0 | hppa1.1 | hppa2.0* | hppa64 )
+         # On hppa, the C compiler may be generating 32-bit code or 64-bit
+         # code. In the latter case, it defines _LP64 and __LP64__.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __LP64__
+                 int ok;
+                #else
+                 error fail
+                #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi=hppa64
+else $as_nop
+  gl_cv_host_cpu_c_abi=hppa
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         ;;
+
+       ia64* )
+         # On ia64 on HP-UX, the C compiler may be generating 64-bit code or
+         # 32-bit code. In the latter case, it defines _ILP32.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef _ILP32
+                 int ok;
+                #else
+                 error fail
+                #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi=ia64-ilp32
+else $as_nop
+  gl_cv_host_cpu_c_abi=ia64
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         ;;
+
+       mips* )
+         # We should also check for (_MIPS_SZPTR == 64), but gcc keeps this
+         # at 32.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined _MIPS_SZLONG && (_MIPS_SZLONG == 64)
+                 int ok;
+                #else
+                 error fail
+                #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi=mips64
+else $as_nop
+  # In the n32 ABI, _ABIN32 is defined, _ABIO32 is not defined (but
+            # may later get defined by <sgidefs.h>), and _MIPS_SIM == _ABIN32.
+            # In the 32 ABI, _ABIO32 is defined, _ABIN32 is not defined (but
+            # may later get defined by <sgidefs.h>), and _MIPS_SIM == _ABIO32.
+            cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if (_MIPS_SIM == _ABIN32)
+                    int ok;
+                   #else
+                    error fail
+                   #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi=mipsn32
+else $as_nop
+  gl_cv_host_cpu_c_abi=mips
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         ;;
+
+       powerpc* )
+         # Different ABIs are in use on AIX vs. Mac OS X vs. Linux,*BSD.
+         # No need to distinguish them here; the caller may distinguish
+         # them based on the OS.
+         # On powerpc64 systems, the C compiler may still be generating
+         # 32-bit code. And on powerpc-ibm-aix systems, the C compiler may
+         # be generating 64-bit code.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __powerpc64__ || defined __LP64__
+                 int ok;
+                #else
+                 error fail
+                #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  # On powerpc64, there are two ABIs on Linux: The AIX compatible
+            # one and the ELFv2 one. The latter defines _CALL_ELF=2.
+            cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined _CALL_ELF && _CALL_ELF == 2
+                    int ok;
+                   #else
+                    error fail
+                   #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi=powerpc64-elfv2
+else $as_nop
+  gl_cv_host_cpu_c_abi=powerpc64
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+else $as_nop
+  gl_cv_host_cpu_c_abi=powerpc
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         ;;
+
+       rs6000 )
+         gl_cv_host_cpu_c_abi=powerpc
+         ;;
+
+       riscv32 | riscv64 )
+         # There are 2 architectures (with variants): rv32* and rv64*.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if __riscv_xlen == 64
+                  int ok;
+                #else
+                  error fail
+                #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  cpu=riscv64
+else $as_nop
+  cpu=riscv32
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         # There are 6 ABIs: ilp32, ilp32f, ilp32d, lp64, lp64f, lp64d.
+         # Size of 'long' and 'void *':
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __LP64__
+                  int ok;
+                #else
+                  error fail
+                #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  main_abi=lp64
+else $as_nop
+  main_abi=ilp32
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         # Float ABIs:
+         # __riscv_float_abi_double:
+         #   'float' and 'double' are passed in floating-point registers.
+         # __riscv_float_abi_single:
+         #   'float' are passed in floating-point registers.
+         # __riscv_float_abi_soft:
+         #   No values are passed in floating-point registers.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __riscv_float_abi_double
+                  int ok;
+                #else
+                  error fail
+                #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  float_abi=d
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __riscv_float_abi_single
+                     int ok;
+                   #else
+                     error fail
+                   #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  float_abi=f
+else $as_nop
+  float_abi=''
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         gl_cv_host_cpu_c_abi="${cpu}-${main_abi}${float_abi}"
+         ;;
+
+       s390* )
+         # On s390x, the C compiler may be generating 64-bit (= s390x) code
+         # or 31-bit (= s390) code.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __LP64__ || defined __s390x__
+                  int ok;
+                #else
+                  error fail
+                #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi=s390x
+else $as_nop
+  gl_cv_host_cpu_c_abi=s390
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         ;;
+
+       sparc | sparc64 )
+         # UltraSPARCs running Linux have `uname -m` = "sparc64", but the
+         # C compiler still generates 32-bit code.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __sparcv9 || defined __arch64__
+                 int ok;
+                #else
+                 error fail
+                #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi=sparc64
+else $as_nop
+  gl_cv_host_cpu_c_abi=sparc
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         ;;
+
+       *)
+         gl_cv_host_cpu_c_abi="$host_cpu"
+         ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_host_cpu_c_abi" >&5
+printf "%s\n" "$gl_cv_host_cpu_c_abi" >&6; }
+
+    HOST_CPU=`echo "$gl_cv_host_cpu_c_abi" | sed -e 's/-.*//'`
+  HOST_CPU_C_ABI="$gl_cv_host_cpu_c_abi"
+
+
+
+  # This was
+  #   AC_DEFINE_UNQUOTED([__${HOST_CPU}__])
+  #   AC_DEFINE_UNQUOTED([__${HOST_CPU_C_ABI}__])
+  # earlier, but KAI C++ 3.2d doesn't like this.
+  sed -e 's/-/_/g' >> confdefs.h <<EOF
+#ifndef __${HOST_CPU}__
+#define __${HOST_CPU}__ 1
+#endif
+#ifndef __${HOST_CPU_C_ABI}__
+#define __${HOST_CPU_C_ABI}__ 1
+#endif
+EOF
+
+
+
+
+      if test "X$prefix" = "XNONE"; then
+    acl_final_prefix="$ac_default_prefix"
+  else
+    acl_final_prefix="$prefix"
+  fi
+  if test "X$exec_prefix" = "XNONE"; then
+    acl_final_exec_prefix='${prefix}'
+  else
+    acl_final_exec_prefix="$exec_prefix"
+  fi
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
+  prefix="$acl_save_prefix"
+
+
+
+# Check whether --with-gnu-ld was given.
+if test ${with_gnu_ld+y}
+then :
+  withval=$with_gnu_ld; test "$withval" = no || with_gnu_ld=yes
+else $as_nop
+  with_gnu_ld=no
+fi
+
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
+  # contains only /bin. Note that ksh looks also at the FPATH variable,
+  # so we have to set that as well for the test.
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+           || PATH_SEPARATOR=';'
+       }
+fi
+
+if test -n "$LD"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ld" >&5
+printf %s "checking for ld... " >&6; }
+elif test "$GCC" = yes; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ld used by $CC" >&5
+printf %s "checking for ld used by $CC... " >&6; }
+elif test "$with_gnu_ld" = yes; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for GNU ld" >&5
+printf %s "checking for GNU ld... " >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for non-GNU ld" >&5
+printf %s "checking for non-GNU ld... " >&6; }
+fi
+if test -n "$LD"; then
+  # Let the user override the test with a path.
+  :
+else
+  if test ${acl_cv_path_LD+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    acl_cv_path_LD= # Final result of this test
+    ac_prog=ld # Program to search in $PATH
+    if test "$GCC" = yes; then
+      # Check if gcc -print-prog-name=ld gives a path.
+      case $host in
+        *-*-mingw*)
+          # gcc leaves a trailing carriage return which upsets mingw
+          acl_output=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+        *)
+          acl_output=`($CC -print-prog-name=ld) 2>&5` ;;
+      esac
+      case $acl_output in
+        # Accept absolute paths.
+        [\\/]* | ?:[\\/]*)
+          re_direlt='/[^/][^/]*/\.\./'
+          # Canonicalize the pathname of ld
+          acl_output=`echo "$acl_output" | sed 's%\\\\%/%g'`
+          while echo "$acl_output" | grep "$re_direlt" > /dev/null 2>&1; do
+            acl_output=`echo $acl_output | sed "s%$re_direlt%/%"`
+          done
+          # Got the pathname. No search in PATH is needed.
+          acl_cv_path_LD="$acl_output"
+          ac_prog=
+          ;;
+        "")
+          # If it fails, then pretend we aren't using GCC.
+          ;;
+        *)
+          # If it is relative, then search for the first ld in PATH.
+          with_gnu_ld=unknown
+          ;;
+      esac
+    fi
+    if test -n "$ac_prog"; then
+      # Search for $ac_prog in $PATH.
+      acl_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+      for ac_dir in $PATH; do
+        IFS="$acl_save_ifs"
+        test -z "$ac_dir" && ac_dir=.
+        if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+          acl_cv_path_LD="$ac_dir/$ac_prog"
+          # Check to see if the program is GNU ld.  I'd rather use --version,
+          # but apparently some variants of GNU ld only accept -v.
+          # Break only if it was the GNU/non-GNU ld that we prefer.
+          case `"$acl_cv_path_LD" -v 2>&1 </dev/null` in
+            *GNU* | *'with BFD'*)
+              test "$with_gnu_ld" != no && break
+              ;;
+            *)
+              test "$with_gnu_ld" != yes && break
+              ;;
+          esac
+        fi
+      done
+      IFS="$acl_save_ifs"
+    fi
+    case $host in
+      *-*-aix*)
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __powerpc64__ || defined __LP64__
+                int ok;
+               #else
+                error fail
+               #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  # The compiler produces 64-bit code. Add option '-b64' so that the
+           # linker groks 64-bit object files.
+           case "$acl_cv_path_LD " in
+             *" -b64 "*) ;;
+             *) acl_cv_path_LD="$acl_cv_path_LD -b64" ;;
+           esac
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+        ;;
+      sparc64-*-netbsd*)
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __sparcv9 || defined __arch64__
+                int ok;
+               #else
+                error fail
+               #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+else $as_nop
+  # The compiler produces 32-bit code. Add option '-m elf32_sparc'
+           # so that the linker groks 32-bit object files.
+           case "$acl_cv_path_LD " in
+             *" -m elf32_sparc "*) ;;
+             *) acl_cv_path_LD="$acl_cv_path_LD -m elf32_sparc" ;;
+           esac
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+        ;;
+    esac
+
+fi
+
+  LD="$acl_cv_path_LD"
+fi
+if test -n "$LD"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LD" >&5
+printf "%s\n" "$LD" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+  as_fn_error $? "no acceptable ld found in \$PATH" "$LINENO" 5
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if the linker ($LD) is GNU ld" >&5
+printf %s "checking if the linker ($LD) is GNU ld... " >&6; }
+if test ${acl_cv_prog_gnu_ld+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  # I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+  acl_cv_prog_gnu_ld=yes
+  ;;
+*)
+  acl_cv_prog_gnu_ld=no
+  ;;
+esac
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $acl_cv_prog_gnu_ld" >&5
+printf "%s\n" "$acl_cv_prog_gnu_ld" >&6; }
+with_gnu_ld=$acl_cv_prog_gnu_ld
+
+
+
+
+
+                                                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for shared library run path origin" >&5
+printf %s "checking for shared library run path origin... " >&6; }
+if test ${acl_cv_rpath+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
+    ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
+    . ./conftest.sh
+    rm -f ./conftest.sh
+    acl_cv_rpath=done
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $acl_cv_rpath" >&5
+printf "%s\n" "$acl_cv_rpath" >&6; }
+  wl="$acl_cv_wl"
+  acl_libext="$acl_cv_libext"
+  acl_shlibext="$acl_cv_shlibext"
+  acl_libname_spec="$acl_cv_libname_spec"
+  acl_library_names_spec="$acl_cv_library_names_spec"
+  acl_hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
+  acl_hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
+  acl_hardcode_direct="$acl_cv_hardcode_direct"
+  acl_hardcode_minus_L="$acl_cv_hardcode_minus_L"
+    # Check whether --enable-rpath was given.
+if test ${enable_rpath+y}
+then :
+  enableval=$enable_rpath; :
+else $as_nop
+  enable_rpath=yes
+fi
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking 32-bit host C ABI" >&5
+printf %s "checking 32-bit host C ABI... " >&6; }
+if test ${gl_cv_host_cpu_c_abi_32bit+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$gl_cv_host_cpu_c_abi"; then
+       case "$gl_cv_host_cpu_c_abi" in
+         i386 | x86_64-x32 | arm | armhf | arm64-ilp32 | hppa | ia64-ilp32 | mips | mipsn32 | powerpc | riscv*-ilp32* | s390 | sparc)
+           gl_cv_host_cpu_c_abi_32bit=yes ;;
+         x86_64 | alpha | arm64 | hppa64 | ia64 | mips64 | powerpc64 | powerpc64-elfv2 | riscv*-lp64* | s390x | sparc64 )
+           gl_cv_host_cpu_c_abi_32bit=no ;;
+         *)
+           gl_cv_host_cpu_c_abi_32bit=unknown ;;
+       esac
+     else
+       case "$host_cpu" in
+
+         # CPUs that only support a 32-bit ABI.
+         arc \
+         | bfin \
+         | cris* \
+         | csky \
+         | epiphany \
+         | ft32 \
+         | h8300 \
+         | m68k \
+         | microblaze | microblazeel \
+         | nds32 | nds32le | nds32be \
+         | nios2 | nios2eb | nios2el \
+         | or1k* \
+         | or32 \
+         | sh | sh1234 | sh1234elb \
+         | tic6x \
+         | xtensa* )
+           gl_cv_host_cpu_c_abi_32bit=yes
+           ;;
+
+         # CPUs that only support a 64-bit ABI.
+         alpha | alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] \
+         | mmix )
+           gl_cv_host_cpu_c_abi_32bit=no
+           ;;
+
+         i[34567]86 )
+           gl_cv_host_cpu_c_abi_32bit=yes
+           ;;
+
+         x86_64 )
+           # On x86_64 systems, the C compiler may be generating code in one of
+           # these ABIs:
+           # - 64-bit instruction set, 64-bit pointers, 64-bit 'long': x86_64.
+           # - 64-bit instruction set, 64-bit pointers, 32-bit 'long': x86_64
+           #   with native Windows (mingw, MSVC).
+           # - 64-bit instruction set, 32-bit pointers, 32-bit 'long': x86_64-x32.
+           # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': i386.
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if (defined __x86_64__ || defined __amd64__ \
+                       || defined _M_X64 || defined _M_AMD64) \
+                      && !(defined __ILP32__ || defined _ILP32)
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi_32bit=no
+else $as_nop
+  gl_cv_host_cpu_c_abi_32bit=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+           ;;
+
+         arm* | aarch64 )
+           # Assume arm with EABI.
+           # On arm64 systems, the C compiler may be generating code in one of
+           # these ABIs:
+           # - aarch64 instruction set, 64-bit pointers, 64-bit 'long': arm64.
+           # - aarch64 instruction set, 32-bit pointers, 32-bit 'long': arm64-ilp32.
+           # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': arm or armhf.
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __aarch64__ && !(defined __ILP32__ || defined _ILP32)
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi_32bit=no
+else $as_nop
+  gl_cv_host_cpu_c_abi_32bit=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+           ;;
+
+         hppa1.0 | hppa1.1 | hppa2.0* | hppa64 )
+           # On hppa, the C compiler may be generating 32-bit code or 64-bit
+           # code. In the latter case, it defines _LP64 and __LP64__.
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __LP64__
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi_32bit=no
+else $as_nop
+  gl_cv_host_cpu_c_abi_32bit=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+           ;;
+
+         ia64* )
+           # On ia64 on HP-UX, the C compiler may be generating 64-bit code or
+           # 32-bit code. In the latter case, it defines _ILP32.
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef _ILP32
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi_32bit=yes
+else $as_nop
+  gl_cv_host_cpu_c_abi_32bit=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+           ;;
+
+         mips* )
+           # We should also check for (_MIPS_SZPTR == 64), but gcc keeps this
+           # at 32.
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined _MIPS_SZLONG && (_MIPS_SZLONG == 64)
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi_32bit=no
+else $as_nop
+  gl_cv_host_cpu_c_abi_32bit=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+           ;;
+
+         powerpc* )
+           # Different ABIs are in use on AIX vs. Mac OS X vs. Linux,*BSD.
+           # No need to distinguish them here; the caller may distinguish
+           # them based on the OS.
+           # On powerpc64 systems, the C compiler may still be generating
+           # 32-bit code. And on powerpc-ibm-aix systems, the C compiler may
+           # be generating 64-bit code.
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __powerpc64__ || defined __LP64__
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi_32bit=no
+else $as_nop
+  gl_cv_host_cpu_c_abi_32bit=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+           ;;
+
+         rs6000 )
+           gl_cv_host_cpu_c_abi_32bit=yes
+           ;;
+
+         riscv32 | riscv64 )
+           # There are 6 ABIs: ilp32, ilp32f, ilp32d, lp64, lp64f, lp64d.
+           # Size of 'long' and 'void *':
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __LP64__
+                    int ok;
+                  #else
+                    error fail
+                  #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi_32bit=no
+else $as_nop
+  gl_cv_host_cpu_c_abi_32bit=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+           ;;
+
+         s390* )
+           # On s390x, the C compiler may be generating 64-bit (= s390x) code
+           # or 31-bit (= s390) code.
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __LP64__ || defined __s390x__
+                    int ok;
+                  #else
+                    error fail
+                  #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi_32bit=no
+else $as_nop
+  gl_cv_host_cpu_c_abi_32bit=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+           ;;
+
+         sparc | sparc64 )
+           # UltraSPARCs running Linux have `uname -m` = "sparc64", but the
+           # C compiler still generates 32-bit code.
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __sparcv9 || defined __arch64__
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_host_cpu_c_abi_32bit=no
+else $as_nop
+  gl_cv_host_cpu_c_abi_32bit=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+           ;;
+
+         *)
+           gl_cv_host_cpu_c_abi_32bit=unknown
+           ;;
+       esac
+     fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_host_cpu_c_abi_32bit" >&5
+printf "%s\n" "$gl_cv_host_cpu_c_abi_32bit" >&6; }
+
+  HOST_CPU_C_ABI_32BIT="$gl_cv_host_cpu_c_abi_32bit"
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ELF binary format" >&5
+printf %s "checking for ELF binary format... " >&6; }
+if test ${gl_cv_elf+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __ELF__
+        Extensible Linking Format
+        #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Extensible Linking Format" >/dev/null 2>&1
+then :
+  gl_cv_elf=yes
+else $as_nop
+  gl_cv_elf=no
+fi
+rm -rf conftest*
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_elf" >&5
+printf "%s\n" "$gl_cv_elf" >&6; }
+  if test $gl_cv_elf = yes; then
+    # Extract the ELF class of a file (5th byte) in decimal.
+    # Cf. https://en.wikipedia.org/wiki/Executable_and_Linkable_Format#File_header
+    if od -A x < /dev/null >/dev/null 2>/dev/null; then
+      # Use POSIX od.
+      func_elfclass ()
+      {
+        od -A n -t d1 -j 4 -N 1
+      }
+    else
+      # Use BSD hexdump.
+      func_elfclass ()
+      {
+        dd bs=1 count=1 skip=4 2>/dev/null | hexdump -e '1/1 "%3d "'
+        echo
+      }
+    fi
+    # Use 'expr', not 'test', to compare the values of func_elfclass, because on
+    # Solaris 11 OpenIndiana and Solaris 11 OmniOS, the result is 001 or 002,
+    # not 1 or 2.
+    case $HOST_CPU_C_ABI_32BIT in
+      yes)
+        # 32-bit ABI.
+        acl_is_expected_elfclass ()
+        {
+          expr "`func_elfclass | sed -e 's/[ 	]//g'`" = 1 > /dev/null
+        }
+        ;;
+      no)
+        # 64-bit ABI.
+        acl_is_expected_elfclass ()
+        {
+          expr "`func_elfclass | sed -e 's/[ 	]//g'`" = 2 > /dev/null
+        }
+        ;;
+      *)
+        # Unknown.
+        acl_is_expected_elfclass ()
+        {
+          :
+        }
+        ;;
+    esac
+  else
+    acl_is_expected_elfclass ()
+    {
+      :
+    }
+  fi
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for the common suffixes of directories in the library search path" >&5
+printf %s "checking for the common suffixes of directories in the library search path... " >&6; }
+if test ${acl_cv_libdirstems+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+            acl_libdirstem=lib
+     acl_libdirstem2=
+     acl_libdirstem3=
+     case "$host_os" in
+       solaris*)
+                                                      if test $HOST_CPU_C_ABI_32BIT = no; then
+           acl_libdirstem2=lib/64
+           case "$host_cpu" in
+             sparc*)        acl_libdirstem3=lib/sparcv9 ;;
+             i*86 | x86_64) acl_libdirstem3=lib/amd64 ;;
+           esac
+         fi
+         ;;
+       *)
+                                                                                 searchpath=`(LC_ALL=C $CC $CPPFLAGS $CFLAGS -print-search-dirs) 2>/dev/null \
+                     | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'`
+         if test $HOST_CPU_C_ABI_32BIT != no; then
+           # 32-bit or unknown ABI.
+           if test -d /usr/lib32; then
+             acl_libdirstem2=lib32
+           fi
+         fi
+         if test $HOST_CPU_C_ABI_32BIT != yes; then
+           # 64-bit or unknown ABI.
+           if test -d /usr/lib64; then
+             acl_libdirstem3=lib64
+           fi
+         fi
+         if test -n "$searchpath"; then
+           acl_save_IFS="${IFS= 	}"; IFS=":"
+           for searchdir in $searchpath; do
+             if test -d "$searchdir"; then
+               case "$searchdir" in
+                 */lib32/ | */lib32 ) acl_libdirstem2=lib32 ;;
+                 */lib64/ | */lib64 ) acl_libdirstem3=lib64 ;;
+                 */../ | */.. )
+                   # Better ignore directories of this form. They are misleading.
+                   ;;
+                 *) searchdir=`cd "$searchdir" && pwd`
+                    case "$searchdir" in
+                      */lib32 ) acl_libdirstem2=lib32 ;;
+                      */lib64 ) acl_libdirstem3=lib64 ;;
+                    esac ;;
+               esac
+             fi
+           done
+           IFS="$acl_save_IFS"
+           if test $HOST_CPU_C_ABI_32BIT = yes; then
+             # 32-bit ABI.
+             acl_libdirstem3=
+           fi
+           if test $HOST_CPU_C_ABI_32BIT = no; then
+             # 64-bit ABI.
+             acl_libdirstem2=
+           fi
+         fi
+         ;;
+     esac
+     test -n "$acl_libdirstem2" || acl_libdirstem2="$acl_libdirstem"
+     test -n "$acl_libdirstem3" || acl_libdirstem3="$acl_libdirstem"
+     acl_cv_libdirstems="$acl_libdirstem,$acl_libdirstem2,$acl_libdirstem3"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $acl_cv_libdirstems" >&5
+printf "%s\n" "$acl_cv_libdirstems" >&6; }
+      acl_libdirstem=`echo "$acl_cv_libdirstems" | sed -e 's/,.*//'`
+  acl_libdirstem2=`echo "$acl_cv_libdirstems" | sed -e 's/^[^,]*,//' -e 's/,.*//'`
+  acl_libdirstem3=`echo "$acl_cv_libdirstems" | sed -e 's/^[^,]*,[^,]*,//' -e 's/,.*//'`
+
+
+
+
+
+
+
+
+
+
+
+    use_additional=yes
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+    eval additional_libdir2=\"$exec_prefix/$acl_libdirstem2\"
+    eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\"
+
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+
+# Check whether --with-libiconv-prefix was given.
+if test ${with_libiconv_prefix+y}
+then :
+  withval=$with_libiconv_prefix;
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+          eval additional_libdir2=\"$exec_prefix/$acl_libdirstem2\"
+          eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\"
+
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/$acl_libdirstem"
+        additional_libdir2="$withval/$acl_libdirstem2"
+        additional_libdir3="$withval/$acl_libdirstem3"
+      fi
+    fi
+
+fi
+
+  if test "X$additional_libdir2" = "X$additional_libdir"; then
+    additional_libdir2=
+  fi
+  if test "X$additional_libdir3" = "X$additional_libdir"; then
+    additional_libdir3=
+  fi
+      LIBICONV=
+  LTLIBICONV=
+  INCICONV=
+  LIBICONV_PREFIX=
+      HAVE_LIBICONV=
+  rpathdirs=
+  ltrpathdirs=
+  names_already_handled=
+  names_next_round='iconv '
+  while test -n "$names_next_round"; do
+    names_this_round="$names_next_round"
+    names_next_round=
+    for name in $names_this_round; do
+      already_handled=
+      for n in $names_already_handled; do
+        if test "$n" = "$name"; then
+          already_handled=yes
+          break
+        fi
+      done
+      if test -z "$already_handled"; then
+        names_already_handled="$names_already_handled $name"
+                        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'`
+        eval value=\"\$HAVE_LIB$uppername\"
+        if test -n "$value"; then
+          if test "$value" = yes; then
+            eval value=\"\$LIB$uppername\"
+            test -z "$value" || LIBICONV="${LIBICONV}${LIBICONV:+ }$value"
+            eval value=\"\$LTLIB$uppername\"
+            test -z "$value" || LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }$value"
+          else
+                                    :
+          fi
+        else
+                              found_dir=
+          found_la=
+          found_so=
+          found_a=
+          eval libname=\"$acl_libname_spec\"    # typically: libname=lib$name
+          if test -n "$acl_shlibext"; then
+            shrext=".$acl_shlibext"             # typically: shrext=.so
+          else
+            shrext=
+          fi
+          if test $use_additional = yes; then
+            for additional_libdir_variable in additional_libdir additional_libdir2 additional_libdir3; do
+              if test "X$found_dir" = "X"; then
+                eval dir=\$$additional_libdir_variable
+                if test -n "$dir"; then
+                                                      if test -n "$acl_shlibext"; then
+                    if test -f "$dir/$libname$shrext" && acl_is_expected_elfclass < "$dir/$libname$shrext"; then
+                      found_dir="$dir"
+                      found_so="$dir/$libname$shrext"
+                    else
+                      if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
+                        ver=`(cd "$dir" && \
+                              for f in "$libname$shrext".*; do echo "$f"; done \
+                              | sed -e "s,^$libname$shrext\\\\.,," \
+                              | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
+                              | sed 1q ) 2>/dev/null`
+                        if test -n "$ver" && test -f "$dir/$libname$shrext.$ver" && acl_is_expected_elfclass < "$dir/$libname$shrext.$ver"; then
+                          found_dir="$dir"
+                          found_so="$dir/$libname$shrext.$ver"
+                        fi
+                      else
+                        eval library_names=\"$acl_library_names_spec\"
+                        for f in $library_names; do
+                          if test -f "$dir/$f" && acl_is_expected_elfclass < "$dir/$f"; then
+                            found_dir="$dir"
+                            found_so="$dir/$f"
+                            break
+                          fi
+                        done
+                      fi
+                    fi
+                  fi
+                                    if test "X$found_dir" = "X"; then
+                    if test -f "$dir/$libname.$acl_libext" && ${AR-ar} -p "$dir/$libname.$acl_libext" | acl_is_expected_elfclass; then
+                      found_dir="$dir"
+                      found_a="$dir/$libname.$acl_libext"
+                    fi
+                  fi
+                  if test "X$found_dir" != "X"; then
+                    if test -f "$dir/$libname.la"; then
+                      found_la="$dir/$libname.la"
+                    fi
+                  fi
+                fi
+              fi
+            done
+          fi
+          if test "X$found_dir" = "X"; then
+            for x in $LDFLAGS $LTLIBICONV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+              case "$x" in
+                -L*)
+                  dir=`echo "X$x" | sed -e 's/^X-L//'`
+                                    if test -n "$acl_shlibext"; then
+                    if test -f "$dir/$libname$shrext" && acl_is_expected_elfclass < "$dir/$libname$shrext"; then
+                      found_dir="$dir"
+                      found_so="$dir/$libname$shrext"
+                    else
+                      if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
+                        ver=`(cd "$dir" && \
+                              for f in "$libname$shrext".*; do echo "$f"; done \
+                              | sed -e "s,^$libname$shrext\\\\.,," \
+                              | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
+                              | sed 1q ) 2>/dev/null`
+                        if test -n "$ver" && test -f "$dir/$libname$shrext.$ver" && acl_is_expected_elfclass < "$dir/$libname$shrext.$ver"; then
+                          found_dir="$dir"
+                          found_so="$dir/$libname$shrext.$ver"
+                        fi
+                      else
+                        eval library_names=\"$acl_library_names_spec\"
+                        for f in $library_names; do
+                          if test -f "$dir/$f" && acl_is_expected_elfclass < "$dir/$f"; then
+                            found_dir="$dir"
+                            found_so="$dir/$f"
+                            break
+                          fi
+                        done
+                      fi
+                    fi
+                  fi
+                                    if test "X$found_dir" = "X"; then
+                    if test -f "$dir/$libname.$acl_libext" && ${AR-ar} -p "$dir/$libname.$acl_libext" | acl_is_expected_elfclass; then
+                      found_dir="$dir"
+                      found_a="$dir/$libname.$acl_libext"
+                    fi
+                  fi
+                  if test "X$found_dir" != "X"; then
+                    if test -f "$dir/$libname.la"; then
+                      found_la="$dir/$libname.la"
+                    fi
+                  fi
+                  ;;
+              esac
+              if test "X$found_dir" != "X"; then
+                break
+              fi
+            done
+          fi
+          if test "X$found_dir" != "X"; then
+                        LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-L$found_dir -l$name"
+            if test "X$found_so" != "X"; then
+                                                        if test "$enable_rpath" = no \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem" \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem2" \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem3"; then
+                                LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
+              else
+                                                                                haveit=
+                for x in $ltrpathdirs; do
+                  if test "X$x" = "X$found_dir"; then
+                    haveit=yes
+                    break
+                  fi
+                done
+                if test -z "$haveit"; then
+                  ltrpathdirs="$ltrpathdirs $found_dir"
+                fi
+                                if test "$acl_hardcode_direct" = yes; then
+                                                      LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
+                else
+                  if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
+                                                            LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
+                                                            haveit=
+                    for x in $rpathdirs; do
+                      if test "X$x" = "X$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      rpathdirs="$rpathdirs $found_dir"
+                    fi
+                  else
+                                                                                haveit=
+                    for x in $LDFLAGS $LIBICONV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                      if test "X$x" = "X-L$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      LIBICONV="${LIBICONV}${LIBICONV:+ }-L$found_dir"
+                    fi
+                    if test "$acl_hardcode_minus_L" != no; then
+                                                                                        LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
+                    else
+                                                                                                                                                                                LIBICONV="${LIBICONV}${LIBICONV:+ }-l$name"
+                    fi
+                  fi
+                fi
+              fi
+            else
+              if test "X$found_a" != "X"; then
+                                LIBICONV="${LIBICONV}${LIBICONV:+ }$found_a"
+              else
+                                                LIBICONV="${LIBICONV}${LIBICONV:+ }-L$found_dir -l$name"
+              fi
+            fi
+                        additional_includedir=
+            case "$found_dir" in
+              */$acl_libdirstem | */$acl_libdirstem/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'`
+                if test "$name" = 'iconv'; then
+                  LIBICONV_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+              */$acl_libdirstem2 | */$acl_libdirstem2/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'`
+                if test "$name" = 'iconv'; then
+                  LIBICONV_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+              */$acl_libdirstem3 | */$acl_libdirstem3/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem3/"'*$,,'`
+                if test "$name" = 'iconv'; then
+                  LIBICONV_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+            esac
+            if test "X$additional_includedir" != "X"; then
+                                                                                                                if test "X$additional_includedir" != "X/usr/include"; then
+                haveit=
+                if test "X$additional_includedir" = "X/usr/local/include"; then
+                  if test -n "$GCC"; then
+                    case $host_os in
+                      linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+                    esac
+                  fi
+                fi
+                if test -z "$haveit"; then
+                  for x in $CPPFLAGS $INCICONV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                    if test "X$x" = "X-I$additional_includedir"; then
+                      haveit=yes
+                      break
+                    fi
+                  done
+                  if test -z "$haveit"; then
+                    if test -d "$additional_includedir"; then
+                                            INCICONV="${INCICONV}${INCICONV:+ }-I$additional_includedir"
+                    fi
+                  fi
+                fi
+              fi
+            fi
+                        if test -n "$found_la"; then
+                                                        save_libdir="$libdir"
+              case "$found_la" in
+                */* | *\\*) . "$found_la" ;;
+                *) . "./$found_la" ;;
+              esac
+              libdir="$save_libdir"
+                            for dep in $dependency_libs; do
+                case "$dep" in
+                  -L*)
+                    dependency_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+                                                                                                                                                                if test "X$dependency_libdir" != "X/usr/$acl_libdirstem" \
+                       && test "X$dependency_libdir" != "X/usr/$acl_libdirstem2" \
+                       && test "X$dependency_libdir" != "X/usr/$acl_libdirstem3"; then
+                      haveit=
+                      if test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem" \
+                         || test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem2" \
+                         || test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem3"; then
+                        if test -n "$GCC"; then
+                          case $host_os in
+                            linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+                          esac
+                        fi
+                      fi
+                      if test -z "$haveit"; then
+                        haveit=
+                        for x in $LDFLAGS $LIBICONV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                          if test "X$x" = "X-L$dependency_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$dependency_libdir"; then
+                                                        LIBICONV="${LIBICONV}${LIBICONV:+ }-L$dependency_libdir"
+                          fi
+                        fi
+                        haveit=
+                        for x in $LDFLAGS $LTLIBICONV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                          if test "X$x" = "X-L$dependency_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$dependency_libdir"; then
+                                                        LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-L$dependency_libdir"
+                          fi
+                        fi
+                      fi
+                    fi
+                    ;;
+                  -R*)
+                    dir=`echo "X$dep" | sed -e 's/^X-R//'`
+                    if test "$enable_rpath" != no; then
+                                                                  haveit=
+                      for x in $rpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        rpathdirs="$rpathdirs $dir"
+                      fi
+                                                                  haveit=
+                      for x in $ltrpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        ltrpathdirs="$ltrpathdirs $dir"
+                      fi
+                    fi
+                    ;;
+                  -l*)
+                                                                                                                                                                dep=`echo "X$dep" | sed -e 's/^X-l//'`
+                    if test "X$dep" != Xc \
+                       || case $host_os in
+                            linux* | gnu* | k*bsd*-gnu) false ;;
+                            *)                          true ;;
+                          esac; then
+                      names_next_round="$names_next_round $dep"
+                    fi
+                    ;;
+                  *.la)
+                                                                                names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+                    ;;
+                  *)
+                                        LIBICONV="${LIBICONV}${LIBICONV:+ }$dep"
+                    LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }$dep"
+                    ;;
+                esac
+              done
+            fi
+          else
+                                                            LIBICONV="${LIBICONV}${LIBICONV:+ }-l$name"
+            LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-l$name"
+          fi
+        fi
+      fi
+    done
+  done
+  if test "X$rpathdirs" != "X"; then
+    if test -n "$acl_hardcode_libdir_separator"; then
+                        alldirs=
+      for found_dir in $rpathdirs; do
+        alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir"
+      done
+            acl_save_libdir="$libdir"
+      libdir="$alldirs"
+      eval flag=\"$acl_hardcode_libdir_flag_spec\"
+      libdir="$acl_save_libdir"
+      LIBICONV="${LIBICONV}${LIBICONV:+ }$flag"
+    else
+            for found_dir in $rpathdirs; do
+        acl_save_libdir="$libdir"
+        libdir="$found_dir"
+        eval flag=\"$acl_hardcode_libdir_flag_spec\"
+        libdir="$acl_save_libdir"
+        LIBICONV="${LIBICONV}${LIBICONV:+ }$flag"
+      done
+    fi
+  fi
+  if test "X$ltrpathdirs" != "X"; then
+            for found_dir in $ltrpathdirs; do
+      LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-R$found_dir"
+    done
+  fi
+
+
+
+
+
+
+
+
+    ICONV_CONST=;
+  REPLACE_ICONV=0;
+  REPLACE_ICONV_OPEN=0;
+  REPLACE_ICONV_UTF=0;
+  ICONV_H='';
+  if false; then
+              ICONV_H='iconv.h'
+     fi
+
+   if test -n "$ICONV_H"; then
+  GL_GENERATE_ICONV_H_TRUE=
+  GL_GENERATE_ICONV_H_FALSE='#'
+else
+  GL_GENERATE_ICONV_H_TRUE='#'
+  GL_GENERATE_ICONV_H_FALSE=
+fi
+
+
+
+
+
+
+
+          am_save_CPPFLAGS="$CPPFLAGS"
+
+  for element in $INCICONV; do
+    haveit=
+    for x in $CPPFLAGS; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
+    fi
+  done
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for iconv" >&5
+printf %s "checking for iconv... " >&6; }
+if test ${am_cv_func_iconv+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    am_cv_func_iconv="no, consider installing GNU libiconv"
+    am_cv_lib_iconv=no
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdlib.h>
+#include <iconv.h>
+
+int
+main (void)
+{
+iconv_t cd = iconv_open("","");
+           iconv(cd,NULL,NULL,NULL,NULL);
+           iconv_close(cd);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  am_cv_func_iconv=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+    if test "$am_cv_func_iconv" != yes; then
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS $LIBICONV"
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdlib.h>
+#include <iconv.h>
+
+int
+main (void)
+{
+iconv_t cd = iconv_open("","");
+             iconv(cd,NULL,NULL,NULL,NULL);
+             iconv_close(cd);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  am_cv_lib_iconv=yes
+        am_cv_func_iconv=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+      LIBS="$am_save_LIBS"
+    fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $am_cv_func_iconv" >&5
+printf "%s\n" "$am_cv_func_iconv" >&6; }
+  if test "$am_cv_func_iconv" = yes; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working iconv" >&5
+printf %s "checking for working iconv... " >&6; }
+if test ${am_cv_func_iconv_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  am_save_LIBS="$LIBS"
+      if test $am_cv_lib_iconv = yes; then
+        LIBS="$LIBS $LIBICONV"
+      fi
+      am_cv_func_iconv_works=no
+      for ac_iconv_const in '' 'const'; do
+        if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+             aix* | hpux*) am_cv_func_iconv_works="guessing no" ;;
+             *)            am_cv_func_iconv_works="guessing yes" ;;
+           esac
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <iconv.h>
+#include <string.h>
+
+#ifndef ICONV_CONST
+# define ICONV_CONST $ac_iconv_const
+#endif
+
+int
+main (void)
+{
+int result = 0;
+  /* Test against AIX 5.1...7.2 bug: Failures are not distinguishable from
+     successful returns.  This is even documented in
+     <https://www.ibm.com/support/knowledgecenter/ssw_aix_72/i_bostechref/iconv.html> */
+  {
+    iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8");
+    if (cd_utf8_to_88591 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\342\202\254"; /* EURO SIGN */
+        char buf[10];
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_utf8_to_88591,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res == 0)
+          result |= 1;
+        iconv_close (cd_utf8_to_88591);
+      }
+  }
+  /* Test against Solaris 10 bug: Failures are not distinguishable from
+     successful returns.  */
+  {
+    iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646");
+    if (cd_ascii_to_88591 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\263";
+        char buf[10];
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_ascii_to_88591,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res == 0)
+          result |= 2;
+        iconv_close (cd_ascii_to_88591);
+      }
+  }
+  /* Test against AIX 6.1..7.1 bug: Buffer overrun.  */
+  {
+    iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1");
+    if (cd_88591_to_utf8 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\304";
+        static char buf[2] = { (char)0xDE, (char)0xAD };
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = 1;
+        char *outptr = buf;
+        size_t outbytesleft = 1;
+        size_t res = iconv (cd_88591_to_utf8,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res != (size_t)(-1) || outptr - buf > 1 || buf[1] != (char)0xAD)
+          result |= 4;
+        iconv_close (cd_88591_to_utf8);
+      }
+  }
+#if 0 /* This bug could be worked around by the caller.  */
+  /* Test against HP-UX 11.11 bug: Positive return value instead of 0.  */
+  {
+    iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591");
+    if (cd_88591_to_utf8 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+        char buf[50];
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_88591_to_utf8,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if ((int)res > 0)
+          result |= 8;
+        iconv_close (cd_88591_to_utf8);
+      }
+  }
+#endif
+  /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
+     provided.  */
+  {
+    /* Try standardized names.  */
+    iconv_t cd1 = iconv_open ("UTF-8", "EUC-JP");
+    /* Try IRIX, OSF/1 names.  */
+    iconv_t cd2 = iconv_open ("UTF-8", "eucJP");
+    /* Try AIX names.  */
+    iconv_t cd3 = iconv_open ("UTF-8", "IBM-eucJP");
+    /* Try HP-UX names.  */
+    iconv_t cd4 = iconv_open ("utf8", "eucJP");
+    if (cd1 == (iconv_t)(-1) && cd2 == (iconv_t)(-1)
+        && cd3 == (iconv_t)(-1) && cd4 == (iconv_t)(-1))
+      result |= 16;
+    if (cd1 != (iconv_t)(-1))
+      iconv_close (cd1);
+    if (cd2 != (iconv_t)(-1))
+      iconv_close (cd2);
+    if (cd3 != (iconv_t)(-1))
+      iconv_close (cd3);
+    if (cd4 != (iconv_t)(-1))
+      iconv_close (cd4);
+  }
+  return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  am_cv_func_iconv_works=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        test "$am_cv_func_iconv_works" = no || break
+      done
+      LIBS="$am_save_LIBS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $am_cv_func_iconv_works" >&5
+printf "%s\n" "$am_cv_func_iconv_works" >&6; }
+    case "$am_cv_func_iconv_works" in
+      *no) am_func_iconv=no am_cv_lib_iconv=no ;;
+      *)   am_func_iconv=yes ;;
+    esac
+  else
+    am_func_iconv=no am_cv_lib_iconv=no
+  fi
+  if test "$am_func_iconv" = yes; then
+
+printf "%s\n" "#define HAVE_ICONV 1" >>confdefs.h
+
+  fi
+  if test "$am_cv_lib_iconv" = yes; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to link with libiconv" >&5
+printf %s "checking how to link with libiconv... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LIBICONV" >&5
+printf "%s\n" "$LIBICONV" >&6; }
+  else
+            CPPFLAGS="$am_save_CPPFLAGS"
+    LIBICONV=
+    LTLIBICONV=
+  fi
+
+
+
+  if test "$am_cv_func_iconv" = yes; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether iconv is compatible with its POSIX signature" >&5
+printf %s "checking whether iconv is compatible with its POSIX signature... " >&6; }
+if test ${gl_cv_iconv_nonconst+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdlib.h>
+#include <iconv.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_iconv_nonconst=yes
+else $as_nop
+  gl_cv_iconv_nonconst=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_iconv_nonconst" >&5
+printf "%s\n" "$gl_cv_iconv_nonconst" >&6; }
+  else
+            gl_cv_iconv_nonconst=yes
+  fi
+  if test $gl_cv_iconv_nonconst = yes; then
+    iconv_arg1=""
+  else
+    iconv_arg1="const"
+  fi
+
+printf "%s\n" "#define ICONV_CONST $iconv_arg1" >>confdefs.h
+
+
+     if test $gl_cv_iconv_nonconst != yes; then
+       ICONV_CONST="const"
+     fi
+
+
+
+
+  GL_GNULIB_ICONV=0
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_iconv_h='<'iconv.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <iconv.h>" >&5
+printf %s "checking absolute name of <iconv.h>... " >&6; }
+if test ${gl_cv_next_iconv_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_iconv_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <iconv.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'iconv.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_iconv_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_iconv_h
+           gl_cv_next_iconv_h='"'$gl_header'"'
+          else
+               gl_cv_next_iconv_h='<'iconv.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_iconv_h" >&5
+printf "%s\n" "$gl_cv_next_iconv_h" >&6; }
+     fi
+     NEXT_ICONV_H=$gl_cv_next_iconv_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'iconv.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_iconv_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_ICONV_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_limits_h='<'limits.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <limits.h>" >&5
+printf %s "checking absolute name of <limits.h>... " >&6; }
+if test ${gl_cv_next_limits_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_limits_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'limits.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_limits_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_limits_h
+           gl_cv_next_limits_h='"'$gl_header'"'
+          else
+               gl_cv_next_limits_h='<'limits.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_limits_h" >&5
+printf "%s\n" "$gl_cv_next_limits_h" >&6; }
+     fi
+     NEXT_LIMITS_H=$gl_cv_next_limits_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'limits.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_limits_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_LIMITS_H=$gl_next_as_first_directive
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether limits.h has WORD_BIT, BOOL_WIDTH etc." >&5
+printf %s "checking whether limits.h has WORD_BIT, BOOL_WIDTH etc.... " >&6; }
+if test ${gl_cv_header_limits_width+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+             #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
+            #endif
+            #include <limits.h>
+            long long llm = LLONG_MAX;
+            int wb = WORD_BIT;
+            int ullw = ULLONG_WIDTH;
+            int bw = BOOL_WIDTH;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_limits_width=yes
+else $as_nop
+  gl_cv_header_limits_width=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_limits_width" >&5
+printf "%s\n" "$gl_cv_header_limits_width" >&6; }
+  if test "$gl_cv_header_limits_width" = yes; then
+    LIMITS_H=
+  else
+    LIMITS_H=limits.h
+  fi
+
+   if test -n "$LIMITS_H"; then
+  GL_GENERATE_LIMITS_H_TRUE=
+  GL_GENERATE_LIMITS_H_FALSE='#'
+else
+  GL_GENERATE_LIMITS_H_TRUE='#'
+  GL_GENERATE_LIMITS_H_FALSE=
+fi
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for wint_t" >&5
+printf %s "checking for wint_t... " >&6; }
+if test ${gt_cv_c_wint_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <wchar.h>
+            wint_t foo = (wchar_t)'\0';
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gt_cv_c_wint_t=yes
+else $as_nop
+  gt_cv_c_wint_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_c_wint_t" >&5
+printf "%s\n" "$gt_cv_c_wint_t" >&6; }
+  if test $gt_cv_c_wint_t = yes; then
+
+printf "%s\n" "#define HAVE_WINT_T 1" >>confdefs.h
+
+
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether wint_t is large enough" >&5
+printf %s "checking whether wint_t is large enough... " >&6; }
+if test ${gl_cv_type_wint_t_large_enough+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <wchar.h>
+              int verify[sizeof (wint_t) < sizeof (int) ? -1 : 1];
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_type_wint_t_large_enough=yes
+else $as_nop
+  gl_cv_type_wint_t_large_enough=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_wint_t_large_enough" >&5
+printf "%s\n" "$gl_cv_type_wint_t_large_enough" >&6; }
+    if test $gl_cv_type_wint_t_large_enough = no; then
+      GNULIBHEADERS_OVERRIDE_WINT_T=1
+    else
+      GNULIBHEADERS_OVERRIDE_WINT_T=0
+    fi
+  else
+    GNULIBHEADERS_OVERRIDE_WINT_T=0
+  fi
+
+
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler produces multi-arch binaries" >&5
+printf %s "checking whether the compiler produces multi-arch binaries... " >&6; }
+if test ${gl_cv_c_multiarch+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_cv_c_multiarch=no
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifndef __APPLE_CC__
+            not a universal capable compiler
+           #endif
+           typedef int dummy;
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+                        arch=
+        prev=
+        for word in ${CC} ${CFLAGS} ${CPPFLAGS} ${LDFLAGS}; do
+          if test -n "$prev"; then
+            case $word in
+              i?86 | x86_64 | ppc | ppc64 | arm | arm64)
+                if test -z "$arch" || test "$arch" = "$word"; then
+                  arch="$word"
+                else
+                  gl_cv_c_multiarch=yes
+                fi
+                ;;
+            esac
+            prev=
+          else
+            if test "x$word" = "x-arch"; then
+              prev=arch
+            fi
+          fi
+        done
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_c_multiarch" >&5
+printf "%s\n" "$gl_cv_c_multiarch" >&6; }
+  if test $gl_cv_c_multiarch = yes; then
+    APPLE_UNIVERSAL_BUILD=1
+  else
+    APPLE_UNIVERSAL_BUILD=0
+  fi
+
+
+
+
+
+
+
+
+printf "%s\n" "#define HAVE_LONG_LONG_INT 1" >>confdefs.h
+
+
+printf "%s\n" "#define HAVE_UNSIGNED_LONG_LONG_INT 1" >>confdefs.h
+
+
+
+  if test $ac_cv_header_wchar_h = yes; then
+    HAVE_WCHAR_H=1
+  else
+    HAVE_WCHAR_H=0
+  fi
+
+
+
+  if test $ac_cv_header_inttypes_h = yes; then
+    HAVE_INTTYPES_H=1
+  else
+    HAVE_INTTYPES_H=0
+  fi
+
+
+
+  if test $ac_cv_header_sys_types_h = yes; then
+    HAVE_SYS_TYPES_H=1
+  else
+    HAVE_SYS_TYPES_H=0
+  fi
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_stdint_h='<'stdint.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <stdint.h>" >&5
+printf %s "checking absolute name of <stdint.h>... " >&6; }
+if test ${gl_cv_next_stdint_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_stdint_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdint.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'stdint.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_stdint_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_stdint_h
+           gl_cv_next_stdint_h='"'$gl_header'"'
+          else
+               gl_cv_next_stdint_h='<'stdint.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_stdint_h" >&5
+printf "%s\n" "$gl_cv_next_stdint_h" >&6; }
+     fi
+     NEXT_STDINT_H=$gl_cv_next_stdint_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'stdint.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_stdint_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_STDINT_H=$gl_next_as_first_directive
+
+
+
+
+  if test $ac_cv_header_stdint_h = yes; then
+    HAVE_STDINT_H=1
+  else
+    HAVE_STDINT_H=0
+  fi
+
+
+    if test $ac_cv_header_stdint_h = yes; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether stdint.h conforms to C99" >&5
+printf %s "checking whether stdint.h conforms to C99... " >&6; }
+if test ${gl_cv_header_working_stdint_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_cv_header_working_stdint_h=no
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
+#define __STDC_CONSTANT_MACROS 1
+#define __STDC_LIMIT_MACROS 1
+#include <stdint.h>
+/* Dragonfly defines WCHAR_MIN, WCHAR_MAX only in <wchar.h>.  */
+#if !(defined WCHAR_MIN && defined WCHAR_MAX)
+#error "WCHAR_MIN, WCHAR_MAX not defined in <stdint.h>"
+#endif
+
+
+  #include <stddef.h>
+  #include <signal.h>
+  #if HAVE_WCHAR_H
+  # include <wchar.h>
+  #endif
+
+
+#ifdef INT8_MAX
+int8_t a1 = INT8_MAX;
+int8_t a1min = INT8_MIN;
+#endif
+#ifdef INT16_MAX
+int16_t a2 = INT16_MAX;
+int16_t a2min = INT16_MIN;
+#endif
+#ifdef INT32_MAX
+int32_t a3 = INT32_MAX;
+int32_t a3min = INT32_MIN;
+#endif
+#ifdef INT64_MAX
+int64_t a4 = INT64_MAX;
+int64_t a4min = INT64_MIN;
+#endif
+#ifdef UINT8_MAX
+uint8_t b1 = UINT8_MAX;
+#else
+typedef int b1[(unsigned char) -1 != 255 ? 1 : -1];
+#endif
+#ifdef UINT16_MAX
+uint16_t b2 = UINT16_MAX;
+#endif
+#ifdef UINT32_MAX
+uint32_t b3 = UINT32_MAX;
+#endif
+#ifdef UINT64_MAX
+uint64_t b4 = UINT64_MAX;
+#endif
+int_least8_t c1 = INT8_C (0x7f);
+int_least8_t c1max = INT_LEAST8_MAX;
+int_least8_t c1min = INT_LEAST8_MIN;
+int_least16_t c2 = INT16_C (0x7fff);
+int_least16_t c2max = INT_LEAST16_MAX;
+int_least16_t c2min = INT_LEAST16_MIN;
+int_least32_t c3 = INT32_C (0x7fffffff);
+int_least32_t c3max = INT_LEAST32_MAX;
+int_least32_t c3min = INT_LEAST32_MIN;
+int_least64_t c4 = INT64_C (0x7fffffffffffffff);
+int_least64_t c4max = INT_LEAST64_MAX;
+int_least64_t c4min = INT_LEAST64_MIN;
+uint_least8_t d1 = UINT8_C (0xff);
+uint_least8_t d1max = UINT_LEAST8_MAX;
+uint_least16_t d2 = UINT16_C (0xffff);
+uint_least16_t d2max = UINT_LEAST16_MAX;
+uint_least32_t d3 = UINT32_C (0xffffffff);
+uint_least32_t d3max = UINT_LEAST32_MAX;
+uint_least64_t d4 = UINT64_C (0xffffffffffffffff);
+uint_least64_t d4max = UINT_LEAST64_MAX;
+int_fast8_t e1 = INT_FAST8_MAX;
+int_fast8_t e1min = INT_FAST8_MIN;
+int_fast16_t e2 = INT_FAST16_MAX;
+int_fast16_t e2min = INT_FAST16_MIN;
+int_fast32_t e3 = INT_FAST32_MAX;
+int_fast32_t e3min = INT_FAST32_MIN;
+int_fast64_t e4 = INT_FAST64_MAX;
+int_fast64_t e4min = INT_FAST64_MIN;
+uint_fast8_t f1 = UINT_FAST8_MAX;
+uint_fast16_t f2 = UINT_FAST16_MAX;
+uint_fast32_t f3 = UINT_FAST32_MAX;
+uint_fast64_t f4 = UINT_FAST64_MAX;
+#ifdef INTPTR_MAX
+intptr_t g = INTPTR_MAX;
+intptr_t gmin = INTPTR_MIN;
+#endif
+#ifdef UINTPTR_MAX
+uintptr_t h = UINTPTR_MAX;
+#endif
+intmax_t i = INTMAX_MAX;
+uintmax_t j = UINTMAX_MAX;
+
+/* Check that SIZE_MAX has the correct type, if possible.  */
+#if 201112 <= __STDC_VERSION__
+int k = _Generic (SIZE_MAX, size_t: 0);
+#elif (2 <= __GNUC__ || 4 <= __clang_major__ || defined __IBM__TYPEOF__ \
+       || (0x5110 <= __SUNPRO_C && !__STDC__))
+extern size_t k;
+extern __typeof__ (SIZE_MAX) k;
+#endif
+
+#include <limits.h> /* for CHAR_BIT */
+#define TYPE_MINIMUM(t) \
+  ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ TYPE_MAXIMUM (t)))
+#define TYPE_MAXIMUM(t) \
+  ((t) ((t) 0 < (t) -1 \
+        ? (t) -1 \
+        : ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1)))
+struct s {
+  int check_PTRDIFF:
+      PTRDIFF_MIN == TYPE_MINIMUM (ptrdiff_t)
+      && PTRDIFF_MAX == TYPE_MAXIMUM (ptrdiff_t)
+      ? 1 : -1;
+  /* Detect bug in FreeBSD 6.0/ia64 and FreeBSD 13.0/arm64.  */
+  int check_SIG_ATOMIC:
+      SIG_ATOMIC_MIN == TYPE_MINIMUM (sig_atomic_t)
+      && SIG_ATOMIC_MAX == TYPE_MAXIMUM (sig_atomic_t)
+      ? 1 : -1;
+  int check_SIZE: SIZE_MAX == TYPE_MAXIMUM (size_t) ? 1 : -1;
+  int check_WCHAR:
+      WCHAR_MIN == TYPE_MINIMUM (wchar_t)
+      && WCHAR_MAX == TYPE_MAXIMUM (wchar_t)
+      ? 1 : -1;
+  /* Detect bug in mingw.  */
+  int check_WINT:
+      WINT_MIN == TYPE_MINIMUM (wint_t)
+      && WINT_MAX == TYPE_MAXIMUM (wint_t)
+      ? 1 : -1;
+
+  /* Detect bugs in glibc 2.4 and Solaris 10 stdint.h, among others.  */
+  int check_UINT8_C:
+        (-1 < UINT8_C (0)) == (-1 < (uint_least8_t) 0) ? 1 : -1;
+  int check_UINT16_C:
+        (-1 < UINT16_C (0)) == (-1 < (uint_least16_t) 0) ? 1 : -1;
+
+  /* Detect bugs in OpenBSD 3.9 stdint.h.  */
+#ifdef UINT8_MAX
+  int check_uint8: (uint8_t) -1 == UINT8_MAX ? 1 : -1;
+#endif
+#ifdef UINT16_MAX
+  int check_uint16: (uint16_t) -1 == UINT16_MAX ? 1 : -1;
+#endif
+#ifdef UINT32_MAX
+  int check_uint32: (uint32_t) -1 == UINT32_MAX ? 1 : -1;
+#endif
+#ifdef UINT64_MAX
+  int check_uint64: (uint64_t) -1 == UINT64_MAX ? 1 : -1;
+#endif
+  int check_uint_least8: (uint_least8_t) -1 == UINT_LEAST8_MAX ? 1 : -1;
+  int check_uint_least16: (uint_least16_t) -1 == UINT_LEAST16_MAX ? 1 : -1;
+  int check_uint_least32: (uint_least32_t) -1 == UINT_LEAST32_MAX ? 1 : -1;
+  int check_uint_least64: (uint_least64_t) -1 == UINT_LEAST64_MAX ? 1 : -1;
+  int check_uint_fast8: (uint_fast8_t) -1 == UINT_FAST8_MAX ? 1 : -1;
+  int check_uint_fast16: (uint_fast16_t) -1 == UINT_FAST16_MAX ? 1 : -1;
+  int check_uint_fast32: (uint_fast32_t) -1 == UINT_FAST32_MAX ? 1 : -1;
+  int check_uint_fast64: (uint_fast64_t) -1 == UINT_FAST64_MAX ? 1 : -1;
+  int check_uintptr: (uintptr_t) -1 == UINTPTR_MAX ? 1 : -1;
+  int check_uintmax: (uintmax_t) -1 == UINTMAX_MAX ? 1 : -1;
+  int check_size: (size_t) -1 == SIZE_MAX ? 1 : -1;
+};
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+                                                    if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                         # Guess yes on native Windows.
+                 mingw*) gl_cv_header_working_stdint_h="guessing yes" ;;
+                         # In general, assume it works.
+                 *)      gl_cv_header_working_stdint_h="guessing yes" ;;
+               esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
+#define __STDC_CONSTANT_MACROS 1
+#define __STDC_LIMIT_MACROS 1
+#include <stdint.h>
+
+
+  #include <stddef.h>
+  #include <signal.h>
+  #if HAVE_WCHAR_H
+  # include <wchar.h>
+  #endif
+
+
+#include <stdio.h>
+#include <string.h>
+#define MVAL(macro) MVAL1(macro)
+#define MVAL1(expression) #expression
+static const char *macro_values[] =
+  {
+#ifdef INT8_MAX
+    MVAL (INT8_MAX),
+#endif
+#ifdef INT16_MAX
+    MVAL (INT16_MAX),
+#endif
+#ifdef INT32_MAX
+    MVAL (INT32_MAX),
+#endif
+#ifdef INT64_MAX
+    MVAL (INT64_MAX),
+#endif
+#ifdef UINT8_MAX
+    MVAL (UINT8_MAX),
+#endif
+#ifdef UINT16_MAX
+    MVAL (UINT16_MAX),
+#endif
+#ifdef UINT32_MAX
+    MVAL (UINT32_MAX),
+#endif
+#ifdef UINT64_MAX
+    MVAL (UINT64_MAX),
+#endif
+    NULL
+  };
+
+int
+main (void)
+{
+
+  const char **mv;
+  for (mv = macro_values; *mv != NULL; mv++)
+    {
+      const char *value = *mv;
+      /* Test whether it looks like a cast expression.  */
+      if (strncmp (value, "((unsigned int)"/*)*/, 15) == 0
+          || strncmp (value, "((unsigned short)"/*)*/, 17) == 0
+          || strncmp (value, "((unsigned char)"/*)*/, 16) == 0
+          || strncmp (value, "((int)"/*)*/, 6) == 0
+          || strncmp (value, "((signed short)"/*)*/, 15) == 0
+          || strncmp (value, "((signed char)"/*)*/, 14) == 0)
+        return mv - macro_values + 1;
+    }
+  return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_header_working_stdint_h=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_working_stdint_h" >&5
+printf "%s\n" "$gl_cv_header_working_stdint_h" >&6; }
+  fi
+
+  HAVE_C99_STDINT_H=0
+  HAVE_SYS_BITYPES_H=0
+  HAVE_SYS_INTTYPES_H=0
+  STDINT_H=stdint.h
+  case "$gl_cv_header_working_stdint_h" in
+    *yes)
+      HAVE_C99_STDINT_H=1
+                        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether stdint.h works without ISO C predefines" >&5
+printf %s "checking whether stdint.h works without ISO C predefines... " >&6; }
+if test ${gl_cv_header_stdint_without_STDC_macros+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_cv_header_stdint_without_STDC_macros=no
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
+#include <stdint.h>
+
+
+  #include <stddef.h>
+  #include <signal.h>
+  #if HAVE_WCHAR_H
+  # include <wchar.h>
+  #endif
+
+
+intmax_t im = INTMAX_MAX;
+int32_t i32 = INT32_C (0x7fffffff);
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_stdint_without_STDC_macros=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_stdint_without_STDC_macros" >&5
+printf "%s\n" "$gl_cv_header_stdint_without_STDC_macros" >&6; }
+
+      if test $gl_cv_header_stdint_without_STDC_macros = no; then
+
+printf "%s\n" "#define __STDC_CONSTANT_MACROS 1" >>confdefs.h
+
+
+printf "%s\n" "#define __STDC_LIMIT_MACROS 1" >>confdefs.h
+
+      fi
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether stdint.h has UINTMAX_WIDTH etc." >&5
+printf %s "checking whether stdint.h has UINTMAX_WIDTH etc.... " >&6; }
+if test ${gl_cv_header_stdint_width+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_cv_header_stdint_width=no
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+              /* Work if build is not clean.  */
+              #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1
+              #ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+               #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
+              #endif
+              #include <stdint.h>
+
+  #include <stddef.h>
+  #include <signal.h>
+  #if HAVE_WCHAR_H
+  # include <wchar.h>
+  #endif
+
+              int iw = UINTMAX_WIDTH;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_stdint_width=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_stdint_width" >&5
+printf "%s\n" "$gl_cv_header_stdint_width" >&6; }
+      if test "$gl_cv_header_stdint_width" = yes; then
+        STDINT_H=
+      fi
+      ;;
+    *)
+                  ac_fn_c_check_header_compile "$LINENO" "sys/inttypes.h" "ac_cv_header_sys_inttypes_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_inttypes_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_INTTYPES_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/bitypes.h" "ac_cv_header_sys_bitypes_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_bitypes_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_BITYPES_H 1" >>confdefs.h
+
+fi
+
+      if test $ac_cv_header_sys_inttypes_h = yes; then
+        HAVE_SYS_INTTYPES_H=1
+      fi
+      if test $ac_cv_header_sys_bitypes_h = yes; then
+        HAVE_SYS_BITYPES_H=1
+      fi
+
+
+  if test $APPLE_UNIVERSAL_BUILD = 0; then
+
+
+  for gltype in ptrdiff_t size_t ; do
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for bit size of $gltype" >&5
+printf %s "checking for bit size of $gltype... " >&6; }
+if eval test \${gl_cv_bitsizeof_${gltype}+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "sizeof ($gltype) * CHAR_BIT" "result"        "
+  #include <stddef.h>
+  #include <signal.h>
+  #if HAVE_WCHAR_H
+  # include <wchar.h>
+  #endif
+
+#include <limits.h>"
+then :
+
+else $as_nop
+  result=unknown
+fi
+
+       eval gl_cv_bitsizeof_${gltype}=\$result
+
+fi
+eval ac_res=\$gl_cv_bitsizeof_${gltype}
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+    eval result=\$gl_cv_bitsizeof_${gltype}
+    if test $result = unknown; then
+                                                result=0
+    fi
+    GLTYPE=`echo "$gltype" | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
+    printf "%s\n" "#define BITSIZEOF_${GLTYPE} $result" >>confdefs.h
+
+    eval BITSIZEOF_${GLTYPE}=\$result
+  done
+
+
+  fi
+
+
+  for gltype in sig_atomic_t wchar_t wint_t ; do
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for bit size of $gltype" >&5
+printf %s "checking for bit size of $gltype... " >&6; }
+if eval test \${gl_cv_bitsizeof_${gltype}+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "sizeof ($gltype) * CHAR_BIT" "result"        "
+  #include <stddef.h>
+  #include <signal.h>
+  #if HAVE_WCHAR_H
+  # include <wchar.h>
+  #endif
+
+#include <limits.h>"
+then :
+
+else $as_nop
+  result=unknown
+fi
+
+       eval gl_cv_bitsizeof_${gltype}=\$result
+
+fi
+eval ac_res=\$gl_cv_bitsizeof_${gltype}
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+    eval result=\$gl_cv_bitsizeof_${gltype}
+    if test $result = unknown; then
+                                                result=0
+    fi
+    GLTYPE=`echo "$gltype" | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
+    printf "%s\n" "#define BITSIZEOF_${GLTYPE} $result" >>confdefs.h
+
+    eval BITSIZEOF_${GLTYPE}=\$result
+  done
+
+
+
+
+  for gltype in sig_atomic_t wchar_t wint_t ; do
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $gltype is signed" >&5
+printf %s "checking whether $gltype is signed... " >&6; }
+if eval test \${gl_cv_type_${gltype}_signed+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+  #include <stddef.h>
+  #include <signal.h>
+  #if HAVE_WCHAR_H
+  # include <wchar.h>
+  #endif
+
+            int verify[2 * (($gltype) -1 < ($gltype) 0) - 1];
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  result=yes
+else $as_nop
+  result=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+       eval gl_cv_type_${gltype}_signed=\$result
+
+fi
+eval ac_res=\$gl_cv_type_${gltype}_signed
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+    eval result=\$gl_cv_type_${gltype}_signed
+    GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
+    if test "$result" = yes; then
+      printf "%s\n" "#define HAVE_SIGNED_${GLTYPE} 1" >>confdefs.h
+
+      eval HAVE_SIGNED_${GLTYPE}=1
+    else
+      eval HAVE_SIGNED_${GLTYPE}=0
+    fi
+  done
+
+
+  gl_cv_type_ptrdiff_t_signed=yes
+  gl_cv_type_size_t_signed=no
+  if test $APPLE_UNIVERSAL_BUILD = 0; then
+
+
+  for gltype in ptrdiff_t size_t ; do
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $gltype integer literal suffix" >&5
+printf %s "checking for $gltype integer literal suffix... " >&6; }
+if eval test \${gl_cv_type_${gltype}_suffix+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  eval gl_cv_type_${gltype}_suffix=no
+       eval result=\$gl_cv_type_${gltype}_signed
+       if test "$result" = yes; then
+         glsufu=
+       else
+         glsufu=u
+       fi
+       for glsuf in "$glsufu" ${glsufu}l ${glsufu}ll ${glsufu}i64; do
+         case $glsuf in
+           '')  gltype1='int';;
+           l)   gltype1='long int';;
+           ll)  gltype1='long long int';;
+           i64) gltype1='__int64';;
+           u)   gltype1='unsigned int';;
+           ul)  gltype1='unsigned long int';;
+           ull) gltype1='unsigned long long int';;
+           ui64)gltype1='unsigned __int64';;
+         esac
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+  #include <stddef.h>
+  #include <signal.h>
+  #if HAVE_WCHAR_H
+  # include <wchar.h>
+  #endif
+
+              extern $gltype foo;
+              extern $gltype1 foo;
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  eval gl_cv_type_${gltype}_suffix=\$glsuf
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         eval result=\$gl_cv_type_${gltype}_suffix
+         test "$result" != no && break
+       done
+fi
+eval ac_res=\$gl_cv_type_${gltype}_suffix
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+    GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
+    eval result=\$gl_cv_type_${gltype}_suffix
+    test "$result" = no && result=
+    eval ${GLTYPE}_SUFFIX=\$result
+    printf "%s\n" "#define ${GLTYPE}_SUFFIX $result" >>confdefs.h
+
+  done
+
+
+  fi
+
+
+  for gltype in sig_atomic_t wchar_t wint_t ; do
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $gltype integer literal suffix" >&5
+printf %s "checking for $gltype integer literal suffix... " >&6; }
+if eval test \${gl_cv_type_${gltype}_suffix+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  eval gl_cv_type_${gltype}_suffix=no
+       eval result=\$gl_cv_type_${gltype}_signed
+       if test "$result" = yes; then
+         glsufu=
+       else
+         glsufu=u
+       fi
+       for glsuf in "$glsufu" ${glsufu}l ${glsufu}ll ${glsufu}i64; do
+         case $glsuf in
+           '')  gltype1='int';;
+           l)   gltype1='long int';;
+           ll)  gltype1='long long int';;
+           i64) gltype1='__int64';;
+           u)   gltype1='unsigned int';;
+           ul)  gltype1='unsigned long int';;
+           ull) gltype1='unsigned long long int';;
+           ui64)gltype1='unsigned __int64';;
+         esac
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+  #include <stddef.h>
+  #include <signal.h>
+  #if HAVE_WCHAR_H
+  # include <wchar.h>
+  #endif
+
+              extern $gltype foo;
+              extern $gltype1 foo;
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  eval gl_cv_type_${gltype}_suffix=\$glsuf
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         eval result=\$gl_cv_type_${gltype}_suffix
+         test "$result" != no && break
+       done
+fi
+eval ac_res=\$gl_cv_type_${gltype}_suffix
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+    GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
+    eval result=\$gl_cv_type_${gltype}_suffix
+    test "$result" = no && result=
+    eval ${GLTYPE}_SUFFIX=\$result
+    printf "%s\n" "#define ${GLTYPE}_SUFFIX $result" >>confdefs.h
+
+  done
+
+
+
+          if test $GNULIBHEADERS_OVERRIDE_WINT_T = 1; then
+    BITSIZEOF_WINT_T=32
+  fi
+
+      ;;
+  esac
+
+
+
+  LIMITS_H='limits.h'
+   if test -n "$LIMITS_H"; then
+  GL_GENERATE_LIMITS_H_TRUE=
+  GL_GENERATE_LIMITS_H_FALSE='#'
+else
+  GL_GENERATE_LIMITS_H_TRUE='#'
+  GL_GENERATE_LIMITS_H_FALSE=
+fi
+
+
+
+
+
+
+
+   if test -n "$STDINT_H"; then
+  GL_GENERATE_STDINT_H_TRUE=
+  GL_GENERATE_STDINT_H_FALSE='#'
+else
+  GL_GENERATE_STDINT_H_TRUE='#'
+  GL_GENERATE_STDINT_H_FALSE=
+fi
+
+
+
+    HAVE_DECL_IMAXABS=1;
+  HAVE_DECL_IMAXDIV=1;
+  HAVE_DECL_STRTOIMAX=1;
+  HAVE_DECL_STRTOUMAX=1;
+  HAVE_IMAXDIV_T=1;
+  REPLACE_STRTOIMAX=0;
+  REPLACE_STRTOUMAX=0;
+  INT32_MAX_LT_INTMAX_MAX=1;
+  INT64_MAX_EQ_LONG_MAX='defined _LP64';
+  PRIPTR_PREFIX=__PRIPTR_PREFIX;
+  UINT32_MAX_LT_UINTMAX_MAX=1;
+  UINT64_MAX_EQ_ULONG_MAX='defined _LP64';
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_inttypes_h='<'inttypes.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <inttypes.h>" >&5
+printf %s "checking absolute name of <inttypes.h>... " >&6; }
+if test ${gl_cv_next_inttypes_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_inttypes_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <inttypes.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'inttypes.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_inttypes_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_inttypes_h
+           gl_cv_next_inttypes_h='"'$gl_header'"'
+          else
+               gl_cv_next_inttypes_h='<'inttypes.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_inttypes_h" >&5
+printf "%s\n" "$gl_cv_next_inttypes_h" >&6; }
+     fi
+     NEXT_INTTYPES_H=$gl_cv_next_inttypes_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'inttypes.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_inttypes_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  PRIPTR_PREFIX=
+  if test -n "$STDINT_H"; then
+            cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+         #ifdef _WIN64
+         LLP64
+         #endif
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  PRIPTR_PREFIX='"l"'
+else $as_nop
+  PRIPTR_PREFIX='"ll"'
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  else
+        for glpfx in '' l ll I64; do
+      case $glpfx in
+        '')  gltype1='int';;
+        l)   gltype1='long int';;
+        ll)  gltype1='long long int';;
+        I64) gltype1='__int64';;
+      esac
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdint.h>
+           extern intptr_t foo;
+           extern $gltype1 foo;
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  PRIPTR_PREFIX='"'$glpfx'"'
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+      test -n "$PRIPTR_PREFIX" && break
+    done
+  fi
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether INT32_MAX < INTMAX_MAX" >&5
+printf %s "checking whether INT32_MAX < INTMAX_MAX... " >&6; }
+if test ${gl_cv_test_INT32_MAX_LT_INTMAX_MAX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Work also in C++ mode.  */
+            #define __STDC_LIMIT_MACROS 1
+
+            /* Work if build is not clean.  */
+            #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H
+
+            #include <limits.h>
+            #if HAVE_STDINT_H
+             #include <stdint.h>
+            #endif
+
+            #if defined INT32_MAX && defined INTMAX_MAX
+             #define CONDITION (INT32_MAX < INTMAX_MAX)
+            #else
+             #define CONDITION (sizeof (int) < sizeof (long long int))
+            #endif
+            int test[CONDITION ? 1 : -1];
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_test_INT32_MAX_LT_INTMAX_MAX=yes
+else $as_nop
+  gl_cv_test_INT32_MAX_LT_INTMAX_MAX=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_test_INT32_MAX_LT_INTMAX_MAX" >&5
+printf "%s\n" "$gl_cv_test_INT32_MAX_LT_INTMAX_MAX" >&6; }
+  if test $gl_cv_test_INT32_MAX_LT_INTMAX_MAX = yes; then
+    INT32_MAX_LT_INTMAX_MAX=1;
+  else
+    INT32_MAX_LT_INTMAX_MAX=0;
+  fi
+
+
+  if test $APPLE_UNIVERSAL_BUILD = 0; then
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether INT64_MAX == LONG_MAX" >&5
+printf %s "checking whether INT64_MAX == LONG_MAX... " >&6; }
+if test ${gl_cv_test_INT64_MAX_EQ_LONG_MAX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Work also in C++ mode.  */
+            #define __STDC_LIMIT_MACROS 1
+
+            /* Work if build is not clean.  */
+            #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H
+
+            #include <limits.h>
+            #if HAVE_STDINT_H
+             #include <stdint.h>
+            #endif
+
+            #if defined INT64_MAX
+             #define CONDITION (INT64_MAX == LONG_MAX)
+            #else
+             #define CONDITION (sizeof (long long int) == sizeof (long int))
+            #endif
+            int test[CONDITION ? 1 : -1];
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_test_INT64_MAX_EQ_LONG_MAX=yes
+else $as_nop
+  gl_cv_test_INT64_MAX_EQ_LONG_MAX=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_test_INT64_MAX_EQ_LONG_MAX" >&5
+printf "%s\n" "$gl_cv_test_INT64_MAX_EQ_LONG_MAX" >&6; }
+  if test $gl_cv_test_INT64_MAX_EQ_LONG_MAX = yes; then
+    INT64_MAX_EQ_LONG_MAX=1;
+  else
+    INT64_MAX_EQ_LONG_MAX=0;
+  fi
+
+
+  else
+    INT64_MAX_EQ_LONG_MAX=-1
+  fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether UINT32_MAX < UINTMAX_MAX" >&5
+printf %s "checking whether UINT32_MAX < UINTMAX_MAX... " >&6; }
+if test ${gl_cv_test_UINT32_MAX_LT_UINTMAX_MAX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Work also in C++ mode.  */
+            #define __STDC_LIMIT_MACROS 1
+
+            /* Work if build is not clean.  */
+            #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H
+
+            #include <limits.h>
+            #if HAVE_STDINT_H
+             #include <stdint.h>
+            #endif
+
+            #if defined UINT32_MAX && defined UINTMAX_MAX
+             #define CONDITION (UINT32_MAX < UINTMAX_MAX)
+            #else
+             #define CONDITION (sizeof (unsigned int) < sizeof (unsigned long long int))
+            #endif
+            int test[CONDITION ? 1 : -1];
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_test_UINT32_MAX_LT_UINTMAX_MAX=yes
+else $as_nop
+  gl_cv_test_UINT32_MAX_LT_UINTMAX_MAX=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_test_UINT32_MAX_LT_UINTMAX_MAX" >&5
+printf "%s\n" "$gl_cv_test_UINT32_MAX_LT_UINTMAX_MAX" >&6; }
+  if test $gl_cv_test_UINT32_MAX_LT_UINTMAX_MAX = yes; then
+    UINT32_MAX_LT_UINTMAX_MAX=1;
+  else
+    UINT32_MAX_LT_UINTMAX_MAX=0;
+  fi
+
+
+  if test $APPLE_UNIVERSAL_BUILD = 0; then
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether UINT64_MAX == ULONG_MAX" >&5
+printf %s "checking whether UINT64_MAX == ULONG_MAX... " >&6; }
+if test ${gl_cv_test_UINT64_MAX_EQ_ULONG_MAX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Work also in C++ mode.  */
+            #define __STDC_LIMIT_MACROS 1
+
+            /* Work if build is not clean.  */
+            #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H
+
+            #include <limits.h>
+            #if HAVE_STDINT_H
+             #include <stdint.h>
+            #endif
+
+            #if defined UINT64_MAX
+             #define CONDITION (UINT64_MAX == ULONG_MAX)
+            #else
+             #define CONDITION (sizeof (unsigned long long int) == sizeof (unsigned long int))
+            #endif
+            int test[CONDITION ? 1 : -1];
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_test_UINT64_MAX_EQ_ULONG_MAX=yes
+else $as_nop
+  gl_cv_test_UINT64_MAX_EQ_ULONG_MAX=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_test_UINT64_MAX_EQ_ULONG_MAX" >&5
+printf "%s\n" "$gl_cv_test_UINT64_MAX_EQ_ULONG_MAX" >&6; }
+  if test $gl_cv_test_UINT64_MAX_EQ_ULONG_MAX = yes; then
+    UINT64_MAX_EQ_ULONG_MAX=1;
+  else
+    UINT64_MAX_EQ_ULONG_MAX=0;
+  fi
+
+
+  else
+    UINT64_MAX_EQ_ULONG_MAX=-1
+  fi
+
+
+
+
+  GL_GNULIB_IMAXABS=0
+
+
+
+  GL_GNULIB_IMAXDIV=0
+
+
+
+  GL_GNULIB_STRTOIMAX=0
+
+
+
+  GL_GNULIB_STRTOUMAX=0
+
+
+
+
+
+    HAVE_ISWBLANK=1;
+  HAVE_WCTYPE_T=1;
+  HAVE_WCTRANS_T=1;
+  REPLACE_ISWBLANK=0;
+  REPLACE_ISWDIGIT=0;
+  REPLACE_ISWXDIGIT=0;
+
+
+
+
+
+  if test $ac_cv_header_crtdefs_h = yes; then
+    HAVE_CRTDEFS_H=1
+  else
+    HAVE_CRTDEFS_H=0
+  fi
+
+
+
+
+
+
+
+
+  if test $ac_cv_func_iswcntrl = yes; then
+    HAVE_ISWCNTRL=1
+  else
+    HAVE_ISWCNTRL=0
+  fi
+
+
+
+  if test $gt_cv_c_wint_t = yes; then
+    HAVE_WINT_T=1
+  else
+    HAVE_WINT_T=0
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_wctype_h='<'wctype.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <wctype.h>" >&5
+printf %s "checking absolute name of <wctype.h>... " >&6; }
+if test ${gl_cv_next_wctype_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_wctype_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <wctype.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'wctype.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_wctype_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_wctype_h
+           gl_cv_next_wctype_h='"'$gl_header'"'
+          else
+               gl_cv_next_wctype_h='<'wctype.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_wctype_h" >&5
+printf "%s\n" "$gl_cv_next_wctype_h" >&6; }
+     fi
+     NEXT_WCTYPE_H=$gl_cv_next_wctype_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'wctype.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_wctype_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H=$gl_next_as_first_directive
+
+
+
+
+  if test $ac_cv_header_wctype_h = yes; then
+    if test $ac_cv_func_iswcntrl = yes; then
+                  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether iswcntrl works" >&5
+printf %s "checking whether iswcntrl works... " >&6; }
+if test ${gl_cv_func_iswcntrl_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+          if test "$cross_compiling" = yes
+then :
+               cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+                          #if __GNU_LIBRARY__ == 1
+                          Linux libc5 i18n is broken.
+                          #endif
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_iswcntrl_works="guessing yes"
+else $as_nop
+  gl_cv_func_iswcntrl_works="guessing no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+               #include <wchar.h>
+               #include <wctype.h>
+               int main () { return iswprint ('x') == 0; }
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_iswcntrl_works=yes
+else $as_nop
+  gl_cv_func_iswcntrl_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_iswcntrl_works" >&5
+printf "%s\n" "$gl_cv_func_iswcntrl_works" >&6; }
+    fi
+    HAVE_WCTYPE_H=1
+  else
+    HAVE_WCTYPE_H=0
+  fi
+
+
+  if test $GNULIBHEADERS_OVERRIDE_WINT_T = 1; then
+    REPLACE_ISWCNTRL=1
+  else
+    case "$gl_cv_func_iswcntrl_works" in
+      *yes) REPLACE_ISWCNTRL=0 ;;
+      *)    REPLACE_ISWCNTRL=1 ;;
+    esac
+  fi
+
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+        :
+  fi
+
+  if test $REPLACE_ISWCNTRL = 1; then
+    REPLACE_TOWLOWER=1
+  else
+    ac_fn_c_check_func "$LINENO" "towlower" "ac_cv_func_towlower"
+if test "x$ac_cv_func_towlower" = xyes
+then :
+  printf "%s\n" "#define HAVE_TOWLOWER 1" >>confdefs.h
+
+fi
+
+    if test $ac_cv_func_towlower = yes; then
+      REPLACE_TOWLOWER=0
+    else
+      ac_fn_check_decl "$LINENO" "towlower" "ac_cv_have_decl_towlower" "#include <wchar.h>
+          #if HAVE_WCTYPE_H
+          # include <wctype.h>
+          #endif
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_towlower" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_TOWLOWER $ac_have_decl" >>confdefs.h
+
+      if test $ac_cv_have_decl_towlower = yes; then
+                                REPLACE_TOWLOWER=1
+      else
+        REPLACE_TOWLOWER=0
+      fi
+    fi
+  fi
+
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_TOWLOWER = 1; then
+        :
+  fi
+
+          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for wctype_t" >&5
+printf %s "checking for wctype_t... " >&6; }
+if test ${gl_cv_type_wctype_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <wchar.h>
+            #if HAVE_WCTYPE_H
+            # include <wctype.h>
+            #endif
+            wctype_t a;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_type_wctype_t=yes
+else $as_nop
+  gl_cv_type_wctype_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_wctype_t" >&5
+printf "%s\n" "$gl_cv_type_wctype_t" >&6; }
+  if test $gl_cv_type_wctype_t = no; then
+    HAVE_WCTYPE_T=0
+  fi
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for wctrans_t" >&5
+printf %s "checking for wctrans_t... " >&6; }
+if test ${gl_cv_type_wctrans_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <wchar.h>
+            #include <wctype.h>
+            wctrans_t a;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_type_wctrans_t=yes
+else $as_nop
+  gl_cv_type_wctrans_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_wctrans_t" >&5
+printf "%s\n" "$gl_cv_type_wctrans_t" >&6; }
+  if test $gl_cv_type_wctrans_t = no; then
+    HAVE_WCTRANS_T=0
+  fi
+
+
+
+
+
+
+
+
+  GL_GNULIB_ISWBLANK=0
+
+
+
+  GL_GNULIB_ISWDIGIT=0
+
+
+
+  GL_GNULIB_ISWXDIGIT=0
+
+
+
+  GL_GNULIB_WCTYPE=0
+
+
+
+  GL_GNULIB_ISWCTYPE=0
+
+
+
+  GL_GNULIB_WCTRANS=0
+
+
+
+  GL_GNULIB_TOWCTRANS=0
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional japanese locale" >&5
+printf %s "checking for a traditional japanese locale... " >&6; }
+if test ${gt_cv_locale_ja+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
+     on Cygwin 1.5.x.  */
+  if (MB_CUR_MAX == 1)
+    return 1;
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Note that on native Windows, the Japanese locale is
+          # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
+          # cannot use it here.
+          gt_cv_locale_ja=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the AIX locale name.
+          if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_ja=ja_JP
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_ja=ja_JP.EUC-JP
+            else
+              # Test for the HP-UX, OSF/1, NetBSD locale name.
+              if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_ja=ja_JP.eucJP
+              else
+                # Test for the IRIX, FreeBSD locale name.
+                if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_ja=ja_JP.EUC
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_ja=ja
+                  else
+                    # Special test for NetBSD 1.6.
+                    if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
+                      gt_cv_locale_ja=ja_JP.eucJP
+                    else
+                      # None found.
+                      gt_cv_locale_ja=none
+                    fi
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_ja" >&5
+printf "%s\n" "$gt_cv_locale_ja" >&6; }
+  LOCALE_JA=$gt_cv_locale_ja
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a french Unicode locale" >&5
+printf %s "checking for a french Unicode locale... " >&6; }
+if test ${gt_cv_locale_fr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if !(defined __BEOS__ || defined __HAIKU__)
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
+    return 1;
+#endif
+#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+#endif
+  return 0;
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=French_France.65001
+          else
+            # None found.
+            gt_cv_locale_fr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr_utf8=fr_FR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=fr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_fr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_fr_utf8" >&6; }
+  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a transitional chinese locale" >&5
+printf %s "checking for a transitional chinese locale... " >&6; }
+if test ${gt_cv_locale_zh_CN+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  /* Check whether a typical GB18030 multibyte sequence is recognized as a
+     single wide character.  This excludes the GB2312 and GBK encodings.  */
+  if (mblen ("\203\062\332\066", 5) != 4)
+    return 1;
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=Chinese_China.54936
+          else
+            # None found.
+            gt_cv_locale_zh_CN=none
+          fi
+          ;;
+        solaris2.8)
+          # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
+          # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
+          # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
+          gt_cv_locale_zh_CN=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the locale name without encoding suffix.
+          if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=zh_CN
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_zh_CN=zh_CN.GB18030
+            else
+              # None found.
+              gt_cv_locale_zh_CN=none
+            fi
+          fi
+          ;;
+      esac
+    else
+      # If there was a link error, due to mblen(), the system is so old that
+      # it certainly doesn't have a chinese locale.
+      gt_cv_locale_zh_CN=none
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_zh_CN" >&5
+printf "%s\n" "$gt_cv_locale_zh_CN" >&6; }
+  LOCALE_ZH_CN=$gt_cv_locale_zh_CN
+
+
+
+    HAVE_NL_LANGINFO=1;
+  REPLACE_NL_LANGINFO=0;
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_langinfo_h='<'langinfo.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <langinfo.h>" >&5
+printf %s "checking absolute name of <langinfo.h>... " >&6; }
+if test ${gl_cv_next_langinfo_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_langinfo_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <langinfo.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'langinfo.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_langinfo_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_langinfo_h
+           gl_cv_next_langinfo_h='"'$gl_header'"'
+          else
+               gl_cv_next_langinfo_h='<'langinfo.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_langinfo_h" >&5
+printf "%s\n" "$gl_cv_next_langinfo_h" >&6; }
+     fi
+     NEXT_LANGINFO_H=$gl_cv_next_langinfo_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'langinfo.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_langinfo_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H=$gl_next_as_first_directive
+
+
+
+
+
+    HAVE_LANGINFO_CODESET=0
+  HAVE_LANGINFO_T_FMT_AMPM=0
+  HAVE_LANGINFO_ALTMON=0
+  HAVE_LANGINFO_ERA=0
+  HAVE_LANGINFO_YESEXPR=0
+
+  if test $ac_cv_header_langinfo_h = yes; then
+    HAVE_LANGINFO_H=1
+                        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether langinfo.h defines CODESET" >&5
+printf %s "checking whether langinfo.h defines CODESET... " >&6; }
+if test ${gl_cv_header_langinfo_codeset+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <langinfo.h>
+int a = CODESET;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_langinfo_codeset=yes
+else $as_nop
+  gl_cv_header_langinfo_codeset=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_langinfo_codeset" >&5
+printf "%s\n" "$gl_cv_header_langinfo_codeset" >&6; }
+    if test $gl_cv_header_langinfo_codeset = yes; then
+      HAVE_LANGINFO_CODESET=1
+    fi
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether langinfo.h defines T_FMT_AMPM" >&5
+printf %s "checking whether langinfo.h defines T_FMT_AMPM... " >&6; }
+if test ${gl_cv_header_langinfo_t_fmt_ampm+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <langinfo.h>
+int a = T_FMT_AMPM;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_langinfo_t_fmt_ampm=yes
+else $as_nop
+  gl_cv_header_langinfo_t_fmt_ampm=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_langinfo_t_fmt_ampm" >&5
+printf "%s\n" "$gl_cv_header_langinfo_t_fmt_ampm" >&6; }
+    if test $gl_cv_header_langinfo_t_fmt_ampm = yes; then
+      HAVE_LANGINFO_T_FMT_AMPM=1
+    fi
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether langinfo.h defines ALTMON_1" >&5
+printf %s "checking whether langinfo.h defines ALTMON_1... " >&6; }
+if test ${gl_cv_header_langinfo_altmon+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <langinfo.h>
+int a = ALTMON_1;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_langinfo_altmon=yes
+else $as_nop
+  gl_cv_header_langinfo_altmon=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_langinfo_altmon" >&5
+printf "%s\n" "$gl_cv_header_langinfo_altmon" >&6; }
+    if test $gl_cv_header_langinfo_altmon = yes; then
+      HAVE_LANGINFO_ALTMON=1
+    fi
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether langinfo.h defines ERA" >&5
+printf %s "checking whether langinfo.h defines ERA... " >&6; }
+if test ${gl_cv_header_langinfo_era+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <langinfo.h>
+int a = ERA;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_langinfo_era=yes
+else $as_nop
+  gl_cv_header_langinfo_era=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_langinfo_era" >&5
+printf "%s\n" "$gl_cv_header_langinfo_era" >&6; }
+    if test $gl_cv_header_langinfo_era = yes; then
+      HAVE_LANGINFO_ERA=1
+    fi
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether langinfo.h defines YESEXPR" >&5
+printf %s "checking whether langinfo.h defines YESEXPR... " >&6; }
+if test ${gl_cv_header_langinfo_yesexpr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <langinfo.h>
+int a = YESEXPR;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_langinfo_yesexpr=yes
+else $as_nop
+  gl_cv_header_langinfo_yesexpr=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_langinfo_yesexpr" >&5
+printf "%s\n" "$gl_cv_header_langinfo_yesexpr" >&6; }
+    if test $gl_cv_header_langinfo_yesexpr = yes; then
+      HAVE_LANGINFO_YESEXPR=1
+    fi
+  else
+    HAVE_LANGINFO_H=0
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+  GL_GNULIB_NL_LANGINFO=0
+
+
+
+
+    HAVE_NEWLOCALE=1;
+  HAVE_DUPLOCALE=1;
+  HAVE_FREELOCALE=1;
+  REPLACE_LOCALECONV=0;
+  REPLACE_SETLOCALE=0;
+  REPLACE_NEWLOCALE=0;
+  REPLACE_DUPLOCALE=0;
+  REPLACE_FREELOCALE=0;
+  REPLACE_STRUCT_LCONV=0;
+  LOCALENAME_ENHANCE_LOCALE_FUNCS=0;
+
+
+    REPLACE_NULL=0;
+  HAVE_MAX_ALIGN_T=1;
+  HAVE_WCHAR_T=1;
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for wchar_t" >&5
+printf %s "checking for wchar_t... " >&6; }
+if test ${gt_cv_c_wchar_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stddef.h>
+            wchar_t foo = (wchar_t)'\0';
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gt_cv_c_wchar_t=yes
+else $as_nop
+  gt_cv_c_wchar_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_c_wchar_t" >&5
+printf "%s\n" "$gt_cv_c_wchar_t" >&6; }
+  if test $gt_cv_c_wchar_t = yes; then
+
+printf "%s\n" "#define HAVE_WCHAR_T 1" >>confdefs.h
+
+  fi
+
+
+
+
+
+
+
+  STDDEF_H=
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for good max_align_t" >&5
+printf %s "checking for good max_align_t... " >&6; }
+if test ${gl_cv_type_max_align_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stddef.h>
+            unsigned int s = sizeof (max_align_t);
+            #if defined __GNUC__ || defined __clang__ || defined __IBM__ALIGNOF__
+            int check1[2 * (__alignof__ (double) <= __alignof__ (max_align_t)) - 1];
+            int check2[2 * (__alignof__ (long double) <= __alignof__ (max_align_t)) - 1];
+            #endif
+            typedef struct { char a; max_align_t b; } max_helper;
+            typedef struct { char a; long b; } long_helper;
+            typedef struct { char a; double b; } double_helper;
+            typedef struct { char a; long double b; } long_double_helper;
+            int check3[2 * (offsetof (long_helper, b) <= offsetof (max_helper, b)) - 1];
+            int check4[2 * (offsetof (double_helper, b) <= offsetof (max_helper, b)) - 1];
+            int check5[2 * (offsetof (long_double_helper, b) <= offsetof (max_helper, b)) - 1];
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_type_max_align_t=yes
+else $as_nop
+  gl_cv_type_max_align_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_type_max_align_t" >&5
+printf "%s\n" "$gl_cv_type_max_align_t" >&6; }
+  if test $gl_cv_type_max_align_t = no; then
+    HAVE_MAX_ALIGN_T=0
+    STDDEF_H=stddef.h
+  fi
+
+  if test $gt_cv_c_wchar_t = no; then
+    HAVE_WCHAR_T=0
+    STDDEF_H=stddef.h
+  fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether NULL can be used in arbitrary expressions" >&5
+printf %s "checking whether NULL can be used in arbitrary expressions... " >&6; }
+if test ${gl_cv_decl_null_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stddef.h>
+      int test[2 * (sizeof NULL == sizeof (void *)) -1];
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_decl_null_works=yes
+else $as_nop
+  gl_cv_decl_null_works=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_decl_null_works" >&5
+printf "%s\n" "$gl_cv_decl_null_works" >&6; }
+  if test $gl_cv_decl_null_works = no; then
+    REPLACE_NULL=1
+    STDDEF_H=stddef.h
+  fi
+
+
+   if test -n "$STDDEF_H"; then
+  GL_GENERATE_STDDEF_H_TRUE=
+  GL_GENERATE_STDDEF_H_FALSE='#'
+else
+  GL_GENERATE_STDDEF_H_TRUE='#'
+  GL_GENERATE_STDDEF_H_FALSE=
+fi
+
+  if test -n "$STDDEF_H"; then
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_stddef_h='<'stddef.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <stddef.h>" >&5
+printf %s "checking absolute name of <stddef.h>... " >&6; }
+if test ${gl_cv_next_stddef_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stddef.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'stddef.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_stddef_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_stddef_h
+           gl_cv_next_stddef_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_stddef_h" >&5
+printf "%s\n" "$gl_cv_next_stddef_h" >&6; }
+     fi
+     NEXT_STDDEF_H=$gl_cv_next_stddef_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'stddef.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_stddef_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_STDDEF_H=$gl_next_as_first_directive
+
+
+
+
+  fi
+
+
+
+
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether locale.h defines locale_t" >&5
+printf %s "checking whether locale.h defines locale_t... " >&6; }
+if test ${gl_cv_header_locale_has_locale_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <locale.h>
+            locale_t x;
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_locale_has_locale_t=yes
+else $as_nop
+  gl_cv_header_locale_has_locale_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_locale_has_locale_t" >&5
+printf "%s\n" "$gl_cv_header_locale_has_locale_t" >&6; }
+
+
+  if test $ac_cv_header_xlocale_h = yes; then
+    HAVE_XLOCALE_H=1
+    if test $gl_cv_header_locale_has_locale_t = yes; then
+      gl_cv_header_locale_h_needs_xlocale_h=no
+    else
+      gl_cv_header_locale_h_needs_xlocale_h=yes
+    fi
+    HAVE_LOCALE_T=1
+  else
+    HAVE_XLOCALE_H=0
+    gl_cv_header_locale_h_needs_xlocale_h=no
+    if test $gl_cv_header_locale_has_locale_t = yes; then
+      HAVE_LOCALE_T=1
+    else
+      HAVE_LOCALE_T=0
+    fi
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+  case "$host_os" in
+    solaris*)
+
+printf "%s\n" "#define _LCONV_C99 1" >>confdefs.h
+
+      ;;
+  esac
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether locale.h conforms to POSIX:2001" >&5
+printf %s "checking whether locale.h conforms to POSIX:2001... " >&6; }
+if test ${gl_cv_header_locale_h_posix2001+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <locale.h>
+            int x = LC_MESSAGES;
+            int y = sizeof (((struct lconv *) 0)->decimal_point);
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_locale_h_posix2001=yes
+else $as_nop
+  gl_cv_header_locale_h_posix2001=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_locale_h_posix2001" >&5
+printf "%s\n" "$gl_cv_header_locale_h_posix2001" >&6; }
+
+          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether struct lconv is properly defined" >&5
+printf %s "checking whether struct lconv is properly defined... " >&6; }
+if test ${gl_cv_sys_struct_lconv_ok+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <locale.h>
+            struct lconv l;
+            int x = sizeof (l.decimal_point);
+            int y = sizeof (l.int_p_cs_precedes);
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_sys_struct_lconv_ok=yes
+else $as_nop
+  gl_cv_sys_struct_lconv_ok=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_sys_struct_lconv_ok" >&5
+printf "%s\n" "$gl_cv_sys_struct_lconv_ok" >&6; }
+  if test $gl_cv_sys_struct_lconv_ok = no; then
+            case "$host_os" in
+      mingw*)
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#ifdef _MSC_VER
+ Special
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Special" >/dev/null 2>&1
+then :
+
+else $as_nop
+  REPLACE_STRUCT_LCONV=1
+fi
+rm -rf conftest*
+
+        ;;
+      *) REPLACE_STRUCT_LCONV=1 ;;
+    esac
+  fi
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_locale_h='<'locale.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <locale.h>" >&5
+printf %s "checking absolute name of <locale.h>... " >&6; }
+if test ${gl_cv_next_locale_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <locale.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'locale.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_locale_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_locale_h
+           gl_cv_next_locale_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_locale_h" >&5
+printf "%s\n" "$gl_cv_next_locale_h" >&6; }
+     fi
+     NEXT_LOCALE_H=$gl_cv_next_locale_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'locale.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_locale_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_LOCALE_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+
+
+
+
+  GL_GNULIB_LOCALECONV=0
+
+
+
+  GL_GNULIB_SETLOCALE=0
+
+
+
+  GL_GNULIB_SETLOCALE_NULL=0
+
+
+
+  GL_GNULIB_DUPLOCALE=0
+
+
+
+  GL_GNULIB_LOCALENAME=0
+
+
+
+
+
+  gl_threads_api=none
+  LIBTHREAD=
+  LTLIBTHREAD=
+  LIBMULTITHREAD=
+  LTLIBMULTITHREAD=
+  if test "$gl_use_threads" != no; then
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether imported symbols can be declared weak" >&5
+printf %s "checking whether imported symbols can be declared weak... " >&6; }
+if test ${gl_cv_have_weak+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_cv_have_weak=no
+          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern void xyzzy ();
+#pragma weak xyzzy
+int
+main (void)
+{
+xyzzy();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_have_weak=maybe
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+     if test $gl_cv_have_weak = maybe; then
+                     if test "$cross_compiling" = yes
+then :
+                      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __ELF__
+             Extensible Linking Format
+             #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Extensible Linking Format" >/dev/null 2>&1
+then :
+  gl_cv_have_weak="guessing yes"
+else $as_nop
+  gl_cv_have_weak="guessing no"
+fi
+rm -rf conftest*
+
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#pragma weak fputs
+int main ()
+{
+  return (fputs == NULL);
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_have_weak=yes
+else $as_nop
+  gl_cv_have_weak=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+     fi
+          case " $LDFLAGS " in
+       *" -static "*) gl_cv_have_weak=no ;;
+     esac
+                    case "$gl_cv_have_weak" in
+       *yes)
+         case "$host_os" in
+           freebsd* | dragonfly* | midnightbsd*)
+             : > conftest1.c
+             $CC $CPPFLAGS $CFLAGS $LDFLAGS -fPIC -shared -o libempty.so conftest1.c -lpthread >&5 2>&1
+             cat <<EOF > conftest2.c
+#include <pthread.h>
+#pragma weak pthread_mutexattr_gettype
+int main ()
+{
+  return (pthread_mutexattr_gettype != NULL);
+}
+EOF
+             $CC $CPPFLAGS $CFLAGS $LDFLAGS -o conftest conftest2.c libempty.so >&5 2>&1 \
+               || gl_cv_have_weak=no
+             rm -f conftest1.c libempty.so conftest2.c conftest
+             ;;
+         esac
+         ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_have_weak" >&5
+printf "%s\n" "$gl_cv_have_weak" >&6; }
+  case "$gl_cv_have_weak" in
+    *yes)
+
+printf "%s\n" "#define HAVE_WEAK_SYMBOLS 1" >>confdefs.h
+
+      ;;
+  esac
+
+    if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then
+
+      :
+    fi
+    if test "$gl_use_threads" = isoc || test "$gl_use_threads" = isoc+posix; then
+
+      gl_have_isoc_threads="$ac_cv_header_threads_h"
+    fi
+    if test "$gl_use_threads" = yes \
+       || test "$gl_use_threads" = posix \
+       || test "$gl_use_threads" = isoc+posix; then
+
+
+  if test -z "$gl_pthreadlib_body_done"; then
+    gl_pthread_api=no
+    LIBPTHREAD=
+    LIBPMULTITHREAD=
+    # On OSF/1, the compiler needs the flag -pthread or -D_REENTRANT so that
+    # it groks <pthread.h>. It's added above, in gl_ANYTHREADLIB_EARLY.
+    ac_fn_c_check_header_compile "$LINENO" "pthread.h" "ac_cv_header_pthread_h" "$ac_includes_default"
+if test "x$ac_cv_header_pthread_h" = xyes
+then :
+  gl_have_pthread_h=yes
+else $as_nop
+  gl_have_pthread_h=no
+fi
+
+    if test "$gl_have_pthread_h" = yes; then
+      # Other possible tests:
+      #   -lpthreads (FSU threads, PCthreads)
+      #   -lgthreads
+      # Test whether both pthread_mutex_lock and pthread_mutexattr_init exist
+      # in libc. IRIX 6.5 has the first one in both libc and libpthread, but
+      # the second one only in libpthread, and lock.c needs it.
+      #
+      # If -pthread works, prefer it to -lpthread, since Ubuntu 14.04
+      # needs -pthread for some reason.  See:
+      # https://lists.gnu.org/r/bug-gnulib/2014-09/msg00023.html
+      save_LIBS=$LIBS
+      for gl_pthread in '' '-pthread'; do
+        LIBS="$LIBS $gl_pthread"
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+               pthread_mutex_t m;
+               pthread_mutexattr_t ma;
+
+int
+main (void)
+{
+pthread_mutex_lock (&m);
+               pthread_mutexattr_init (&ma);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_pthread_api=yes
+           LIBPTHREAD=$gl_pthread
+           LIBPMULTITHREAD=$gl_pthread
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+        LIBS=$save_LIBS
+        test $gl_pthread_api = yes && break
+      done
+      echo "$as_me:18770: gl_pthread_api=$gl_pthread_api" >&5
+      echo "$as_me:18771: LIBPTHREAD=$LIBPTHREAD" >&5
+
+      gl_pthread_in_glibc=no
+      # On Linux with glibc >= 2.34, libc contains the fully functional
+      # pthread functions.
+      case "$host_os" in
+        linux*)
+          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <features.h>
+             #ifdef __GNU_LIBRARY__
+              #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 34) || (__GLIBC__ > 2)
+               Lucky user
+              #endif
+             #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Lucky user" >/dev/null 2>&1
+then :
+  gl_pthread_in_glibc=yes
+fi
+rm -rf conftest*
+
+          ;;
+      esac
+      echo "$as_me:18797: gl_pthread_in_glibc=$gl_pthread_in_glibc" >&5
+
+      # Test for libpthread by looking for pthread_kill. (Not pthread_self,
+      # since it is defined as a macro on OSF/1.)
+      if test $gl_pthread_api = yes && test -z "$LIBPTHREAD"; then
+        # The program links fine without libpthread. But it may actually
+        # need to link with libpthread in order to create multiple threads.
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_kill in -lpthread" >&5
+printf %s "checking for pthread_kill in -lpthread... " >&6; }
+if test ${ac_cv_lib_pthread_pthread_kill+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lpthread  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_kill ();
+int
+main (void)
+{
+return pthread_kill ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_pthread_pthread_kill=yes
+else $as_nop
+  ac_cv_lib_pthread_pthread_kill=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthread_pthread_kill" >&5
+printf "%s\n" "$ac_cv_lib_pthread_pthread_kill" >&6; }
+if test "x$ac_cv_lib_pthread_pthread_kill" = xyes
+then :
+  if test $gl_pthread_in_glibc = yes; then
+             LIBPMULTITHREAD=
+           else
+             LIBPMULTITHREAD=-lpthread
+             # On Solaris and HP-UX, most pthread functions exist also in libc.
+             # Therefore pthread_in_use() needs to actually try to create a
+             # thread: pthread_create from libc will fail, whereas
+             # pthread_create will actually create a thread.
+             # On Solaris 10 or newer, this test is no longer needed, because
+             # libc contains the fully functional pthread functions.
+             case "$host_os" in
+               solaris | solaris2.1-9 | solaris2.1-9.* | hpux*)
+
+printf "%s\n" "#define PTHREAD_IN_USE_DETECTION_HARD 1" >>confdefs.h
+
+             esac
+           fi
+
+fi
+
+      elif test $gl_pthread_api != yes; then
+        # Some library is needed. Try libpthread and libc_r.
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_kill in -lpthread" >&5
+printf %s "checking for pthread_kill in -lpthread... " >&6; }
+if test ${ac_cv_lib_pthread_pthread_kill+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lpthread  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_kill ();
+int
+main (void)
+{
+return pthread_kill ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_pthread_pthread_kill=yes
+else $as_nop
+  ac_cv_lib_pthread_pthread_kill=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthread_pthread_kill" >&5
+printf "%s\n" "$ac_cv_lib_pthread_pthread_kill" >&6; }
+if test "x$ac_cv_lib_pthread_pthread_kill" = xyes
+then :
+  gl_pthread_api=yes
+           LIBPTHREAD=-lpthread
+           LIBPMULTITHREAD=-lpthread
+fi
+
+        if test $gl_pthread_api != yes; then
+          # For FreeBSD 4.
+          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_kill in -lc_r" >&5
+printf %s "checking for pthread_kill in -lc_r... " >&6; }
+if test ${ac_cv_lib_c_r_pthread_kill+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lc_r  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_kill ();
+int
+main (void)
+{
+return pthread_kill ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_c_r_pthread_kill=yes
+else $as_nop
+  ac_cv_lib_c_r_pthread_kill=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_c_r_pthread_kill" >&5
+printf "%s\n" "$ac_cv_lib_c_r_pthread_kill" >&6; }
+if test "x$ac_cv_lib_c_r_pthread_kill" = xyes
+then :
+  gl_pthread_api=yes
+             LIBPTHREAD=-lc_r
+             LIBPMULTITHREAD=-lc_r
+fi
+
+        fi
+      fi
+      echo "$as_me:18951: LIBPMULTITHREAD=$LIBPMULTITHREAD" >&5
+    fi
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether POSIX threads API is available" >&5
+printf %s "checking whether POSIX threads API is available... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_pthread_api" >&5
+printf "%s\n" "$gl_pthread_api" >&6; }
+
+
+    if test $gl_pthread_api = yes; then
+
+printf "%s\n" "#define HAVE_PTHREAD_API 1" >>confdefs.h
+
+    fi
+
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sched.h>
+int
+main (void)
+{
+sched_yield ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  LIB_SCHED_YIELD=
+
+else $as_nop
+         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sched_yield in -lrt" >&5
+printf %s "checking for sched_yield in -lrt... " >&6; }
+if test ${ac_cv_lib_rt_sched_yield+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lrt  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char sched_yield ();
+int
+main (void)
+{
+return sched_yield ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_rt_sched_yield=yes
+else $as_nop
+  ac_cv_lib_rt_sched_yield=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_sched_yield" >&5
+printf "%s\n" "$ac_cv_lib_rt_sched_yield" >&6; }
+if test "x$ac_cv_lib_rt_sched_yield" = xyes
+then :
+  LIB_SCHED_YIELD=-lrt
+else $as_nop
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sched_yield in -lposix4" >&5
+printf %s "checking for sched_yield in -lposix4... " >&6; }
+if test ${ac_cv_lib_posix4_sched_yield+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lposix4  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char sched_yield ();
+int
+main (void)
+{
+return sched_yield ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_posix4_sched_yield=yes
+else $as_nop
+  ac_cv_lib_posix4_sched_yield=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_posix4_sched_yield" >&5
+printf "%s\n" "$ac_cv_lib_posix4_sched_yield" >&6; }
+if test "x$ac_cv_lib_posix4_sched_yield" = xyes
+then :
+  LIB_SCHED_YIELD=-lposix4
+fi
+
+fi
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+
+    gl_pthreadlib_body_done=done
+  fi
+
+      LIBTHREAD=$LIBPTHREAD LTLIBTHREAD=$LIBPTHREAD
+      LIBMULTITHREAD=$LIBPMULTITHREAD LTLIBMULTITHREAD=$LIBPMULTITHREAD
+      if test $gl_pthread_api = yes; then
+        if test "$gl_use_threads" = isoc+posix && test "$gl_have_isoc_threads" = yes; then
+          gl_threads_api='isoc+posix'
+
+printf "%s\n" "#define USE_ISOC_AND_POSIX_THREADS 1" >>confdefs.h
+
+          LIBTHREAD= LTLIBTHREAD=
+        else
+          gl_threads_api=posix
+
+printf "%s\n" "#define USE_POSIX_THREADS 1" >>confdefs.h
+
+          if test -z "$LIBMULTITHREAD" && test -z "$LTLIBMULTITHREAD"; then
+
+printf "%s\n" "#define USE_POSIX_THREADS_FROM_LIBC 1" >>confdefs.h
+
+          else
+            if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then
+
+printf "%s\n" "#define USE_POSIX_THREADS_WEAK 1" >>confdefs.h
+
+              LIBTHREAD= LTLIBTHREAD=
+            else
+              case "$host_os" in
+                freebsd* | dragonfly* | midnightbsd*)
+                  if test "x$LIBTHREAD" != "x$LIBMULTITHREAD"; then
+
+printf "%s\n" "#define PTHREAD_IN_USE_DETECTION_HARD 1" >>confdefs.h
+
+                  fi
+                  ;;
+              esac
+            fi
+          fi
+        fi
+      fi
+    fi
+    if test $gl_threads_api = none; then
+      if test "$gl_use_threads" = isoc && test "$gl_have_isoc_threads" = yes; then
+
+
+
+  if test -z "$gl_stdthreadlib_body_done"; then
+
+
+    case "$host_os" in
+      mingw*)
+        LIBSTDTHREAD=
+        ;;
+      *)
+
+
+  if test -z "$gl_pthreadlib_body_done"; then
+    gl_pthread_api=no
+    LIBPTHREAD=
+    LIBPMULTITHREAD=
+    # On OSF/1, the compiler needs the flag -pthread or -D_REENTRANT so that
+    # it groks <pthread.h>. It's added above, in gl_ANYTHREADLIB_EARLY.
+    ac_fn_c_check_header_compile "$LINENO" "pthread.h" "ac_cv_header_pthread_h" "$ac_includes_default"
+if test "x$ac_cv_header_pthread_h" = xyes
+then :
+  gl_have_pthread_h=yes
+else $as_nop
+  gl_have_pthread_h=no
+fi
+
+    if test "$gl_have_pthread_h" = yes; then
+      # Other possible tests:
+      #   -lpthreads (FSU threads, PCthreads)
+      #   -lgthreads
+      # Test whether both pthread_mutex_lock and pthread_mutexattr_init exist
+      # in libc. IRIX 6.5 has the first one in both libc and libpthread, but
+      # the second one only in libpthread, and lock.c needs it.
+      #
+      # If -pthread works, prefer it to -lpthread, since Ubuntu 14.04
+      # needs -pthread for some reason.  See:
+      # https://lists.gnu.org/r/bug-gnulib/2014-09/msg00023.html
+      save_LIBS=$LIBS
+      for gl_pthread in '' '-pthread'; do
+        LIBS="$LIBS $gl_pthread"
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+               pthread_mutex_t m;
+               pthread_mutexattr_t ma;
+
+int
+main (void)
+{
+pthread_mutex_lock (&m);
+               pthread_mutexattr_init (&ma);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_pthread_api=yes
+           LIBPTHREAD=$gl_pthread
+           LIBPMULTITHREAD=$gl_pthread
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+        LIBS=$save_LIBS
+        test $gl_pthread_api = yes && break
+      done
+      echo "$as_me:19179: gl_pthread_api=$gl_pthread_api" >&5
+      echo "$as_me:19180: LIBPTHREAD=$LIBPTHREAD" >&5
+
+      gl_pthread_in_glibc=no
+      # On Linux with glibc >= 2.34, libc contains the fully functional
+      # pthread functions.
+      case "$host_os" in
+        linux*)
+          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <features.h>
+             #ifdef __GNU_LIBRARY__
+              #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 34) || (__GLIBC__ > 2)
+               Lucky user
+              #endif
+             #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Lucky user" >/dev/null 2>&1
+then :
+  gl_pthread_in_glibc=yes
+fi
+rm -rf conftest*
+
+          ;;
+      esac
+      echo "$as_me:19206: gl_pthread_in_glibc=$gl_pthread_in_glibc" >&5
+
+      # Test for libpthread by looking for pthread_kill. (Not pthread_self,
+      # since it is defined as a macro on OSF/1.)
+      if test $gl_pthread_api = yes && test -z "$LIBPTHREAD"; then
+        # The program links fine without libpthread. But it may actually
+        # need to link with libpthread in order to create multiple threads.
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_kill in -lpthread" >&5
+printf %s "checking for pthread_kill in -lpthread... " >&6; }
+if test ${ac_cv_lib_pthread_pthread_kill+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lpthread  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_kill ();
+int
+main (void)
+{
+return pthread_kill ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_pthread_pthread_kill=yes
+else $as_nop
+  ac_cv_lib_pthread_pthread_kill=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthread_pthread_kill" >&5
+printf "%s\n" "$ac_cv_lib_pthread_pthread_kill" >&6; }
+if test "x$ac_cv_lib_pthread_pthread_kill" = xyes
+then :
+  if test $gl_pthread_in_glibc = yes; then
+             LIBPMULTITHREAD=
+           else
+             LIBPMULTITHREAD=-lpthread
+             # On Solaris and HP-UX, most pthread functions exist also in libc.
+             # Therefore pthread_in_use() needs to actually try to create a
+             # thread: pthread_create from libc will fail, whereas
+             # pthread_create will actually create a thread.
+             # On Solaris 10 or newer, this test is no longer needed, because
+             # libc contains the fully functional pthread functions.
+             case "$host_os" in
+               solaris | solaris2.1-9 | solaris2.1-9.* | hpux*)
+
+printf "%s\n" "#define PTHREAD_IN_USE_DETECTION_HARD 1" >>confdefs.h
+
+             esac
+           fi
+
+fi
+
+      elif test $gl_pthread_api != yes; then
+        # Some library is needed. Try libpthread and libc_r.
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_kill in -lpthread" >&5
+printf %s "checking for pthread_kill in -lpthread... " >&6; }
+if test ${ac_cv_lib_pthread_pthread_kill+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lpthread  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_kill ();
+int
+main (void)
+{
+return pthread_kill ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_pthread_pthread_kill=yes
+else $as_nop
+  ac_cv_lib_pthread_pthread_kill=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthread_pthread_kill" >&5
+printf "%s\n" "$ac_cv_lib_pthread_pthread_kill" >&6; }
+if test "x$ac_cv_lib_pthread_pthread_kill" = xyes
+then :
+  gl_pthread_api=yes
+           LIBPTHREAD=-lpthread
+           LIBPMULTITHREAD=-lpthread
+fi
+
+        if test $gl_pthread_api != yes; then
+          # For FreeBSD 4.
+          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_kill in -lc_r" >&5
+printf %s "checking for pthread_kill in -lc_r... " >&6; }
+if test ${ac_cv_lib_c_r_pthread_kill+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lc_r  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_kill ();
+int
+main (void)
+{
+return pthread_kill ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_c_r_pthread_kill=yes
+else $as_nop
+  ac_cv_lib_c_r_pthread_kill=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_c_r_pthread_kill" >&5
+printf "%s\n" "$ac_cv_lib_c_r_pthread_kill" >&6; }
+if test "x$ac_cv_lib_c_r_pthread_kill" = xyes
+then :
+  gl_pthread_api=yes
+             LIBPTHREAD=-lc_r
+             LIBPMULTITHREAD=-lc_r
+fi
+
+        fi
+      fi
+      echo "$as_me:19360: LIBPMULTITHREAD=$LIBPMULTITHREAD" >&5
+    fi
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether POSIX threads API is available" >&5
+printf %s "checking whether POSIX threads API is available... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_pthread_api" >&5
+printf "%s\n" "$gl_pthread_api" >&6; }
+
+
+    if test $gl_pthread_api = yes; then
+
+printf "%s\n" "#define HAVE_PTHREAD_API 1" >>confdefs.h
+
+    fi
+
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sched.h>
+int
+main (void)
+{
+sched_yield ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  LIB_SCHED_YIELD=
+
+else $as_nop
+         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sched_yield in -lrt" >&5
+printf %s "checking for sched_yield in -lrt... " >&6; }
+if test ${ac_cv_lib_rt_sched_yield+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lrt  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char sched_yield ();
+int
+main (void)
+{
+return sched_yield ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_rt_sched_yield=yes
+else $as_nop
+  ac_cv_lib_rt_sched_yield=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_sched_yield" >&5
+printf "%s\n" "$ac_cv_lib_rt_sched_yield" >&6; }
+if test "x$ac_cv_lib_rt_sched_yield" = xyes
+then :
+  LIB_SCHED_YIELD=-lrt
+else $as_nop
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sched_yield in -lposix4" >&5
+printf %s "checking for sched_yield in -lposix4... " >&6; }
+if test ${ac_cv_lib_posix4_sched_yield+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lposix4  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char sched_yield ();
+int
+main (void)
+{
+return sched_yield ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_posix4_sched_yield=yes
+else $as_nop
+  ac_cv_lib_posix4_sched_yield=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_posix4_sched_yield" >&5
+printf "%s\n" "$ac_cv_lib_posix4_sched_yield" >&6; }
+if test "x$ac_cv_lib_posix4_sched_yield" = xyes
+then :
+  LIB_SCHED_YIELD=-lposix4
+fi
+
+fi
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+
+    gl_pthreadlib_body_done=done
+  fi
+
+        if test $ac_cv_header_threads_h = yes; then
+                                                            ac_fn_c_check_func "$LINENO" "thrd_create" "ac_cv_func_thrd_create"
+if test "x$ac_cv_func_thrd_create" = xyes
+then :
+  printf "%s\n" "#define HAVE_THRD_CREATE 1" >>confdefs.h
+
+fi
+
+          if test $ac_cv_func_thrd_create = yes; then
+            LIBSTDTHREAD=
+          else
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for thrd_create in -lstdthreads" >&5
+printf %s "checking for thrd_create in -lstdthreads... " >&6; }
+if test ${ac_cv_lib_stdthreads_thrd_create+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lstdthreads  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char thrd_create ();
+int
+main (void)
+{
+return thrd_create ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_stdthreads_thrd_create=yes
+else $as_nop
+  ac_cv_lib_stdthreads_thrd_create=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_stdthreads_thrd_create" >&5
+printf "%s\n" "$ac_cv_lib_stdthreads_thrd_create" >&6; }
+if test "x$ac_cv_lib_stdthreads_thrd_create" = xyes
+then :
+
+              LIBSTDTHREAD='-lstdthreads -lpthread'
+
+else $as_nop
+
+                            LIBSTDTHREAD="$LIBPMULTITHREAD"
+
+fi
+
+          fi
+        else
+                    LIBSTDTHREAD="$LIBPMULTITHREAD $LIB_SCHED_YIELD"
+        fi
+        ;;
+    esac
+
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether ISO C threads API is available" >&5
+printf %s "checking whether ISO C threads API is available... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_threads_h" >&5
+printf "%s\n" "$ac_cv_header_threads_h" >&6; }
+    gl_stdthreadlib_body_done=done
+  fi
+
+        LIBTHREAD=$LIBSTDTHREAD LTLIBTHREAD=$LIBSTDTHREAD
+        LIBMULTITHREAD=$LIBSTDTHREAD LTLIBMULTITHREAD=$LIBSTDTHREAD
+        gl_threads_api=isoc
+
+printf "%s\n" "#define USE_ISOC_THREADS 1" >>confdefs.h
+
+      fi
+    fi
+    if test $gl_threads_api = none; then
+      case "$gl_use_threads" in
+        yes | windows | win32) # The 'win32' is for backward compatibility.
+          if { case "$host_os" in
+                 mingw*) true;;
+                 *) false;;
+               esac
+             }; then
+            gl_threads_api=windows
+
+printf "%s\n" "#define USE_WINDOWS_THREADS 1" >>confdefs.h
+
+          fi
+          ;;
+      esac
+    fi
+  fi
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for multithread API to use" >&5
+printf %s "checking for multithread API to use... " >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_threads_api" >&5
+printf "%s\n" "$gl_threads_api" >&6; }
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  case "$host_os" in
+    mingw*) WINDOWS_STAT_INODES=1 ;;
+    *)      WINDOWS_STAT_INODES=0 ;;
+  esac
+
+
+
+
+
+printf "%s\n" "#define _USE_STD_STAT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_sys_types_h='<'sys/types.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <sys/types.h>" >&5
+printf %s "checking absolute name of <sys/types.h>... " >&6; }
+if test ${gl_cv_next_sys_types_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'sys/types.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_sys_types_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_sys_types_h
+           gl_cv_next_sys_types_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_sys_types_h" >&5
+printf "%s\n" "$gl_cv_next_sys_types_h" >&6; }
+     fi
+     NEXT_SYS_TYPES_H=$gl_cv_next_sys_types_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'sys/types.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_sys_types_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a sed that does not truncate output" >&5
+printf %s "checking for a sed that does not truncate output... " >&6; }
+if test ${ac_cv_path_SED+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+            ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
+     for ac_i in 1 2 3 4 5 6 7; do
+       ac_script="$ac_script$as_nl$ac_script"
+     done
+     echo "$ac_script" 2>/dev/null | sed 99q >conftest.sed
+     { ac_script=; unset ac_script;}
+     if test -z "$SED"; then
+  ac_path_SED_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_prog in sed gsed
+   do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_SED="$as_dir$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_SED" || continue
+# Check for GNU ac_path_SED and select it if it is found.
+  # Check for GNU $ac_path_SED
+case `"$ac_path_SED" --version 2>&1` in
+*GNU*)
+  ac_cv_path_SED="$ac_path_SED" ac_path_SED_found=:;;
+*)
+  ac_count=0
+  printf %s 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    printf "%s\n" '' >> "conftest.nl"
+    "$ac_path_SED" -f conftest.sed < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_SED_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_SED="$ac_path_SED"
+      ac_path_SED_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_SED_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_SED"; then
+    as_fn_error $? "no acceptable sed could be found in \$PATH" "$LINENO" 5
+  fi
+else
+  ac_cv_path_SED=$SED
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_SED" >&5
+printf "%s\n" "$ac_cv_path_SED" >&6; }
+ SED="$ac_cv_path_SED"
+  rm -f conftest.sed
+
+
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether malloc (0) returns nonnull" >&5
+printf %s "checking whether malloc (0) returns nonnull... " >&6; }
+if test ${ac_cv_func_malloc_0_nonnull+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+          # Guess yes on platforms where we know the result.
+          *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \
+          | gnu* | *-musl* | midnightbsd* \
+          | hpux* | solaris* | cygwin* | mingw* | msys* )
+            ac_cv_func_malloc_0_nonnull="guessing yes" ;;
+          # If we don't know, obey --enable-cross-guesses.
+          *) ac_cv_func_malloc_0_nonnull="$gl_cross_guess_normal" ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+int
+main (void)
+{
+void *p = malloc (0);
+            int result = !p;
+            free (p);
+            return result;
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  ac_cv_func_malloc_0_nonnull=yes
+else $as_nop
+  ac_cv_func_malloc_0_nonnull=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_malloc_0_nonnull" >&5
+printf "%s\n" "$ac_cv_func_malloc_0_nonnull" >&6; }
+  case $ac_cv_func_malloc_0_nonnull in #(
+  *yes) :
+    gl_cv_func_malloc_0_nonnull=1 ;; #(
+  *) :
+    gl_cv_func_malloc_0_nonnull=0 ;;
+esac
+
+
+printf "%s\n" "#define MALLOC_0_IS_NONNULL $gl_cv_func_malloc_0_nonnull" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+        if case "$host_os" in
+       mingw*) true ;;
+       *) test $ac_cv_func_mbsinit = yes ;;
+     esac \
+    && test $ac_cv_func_mbrtowc = yes; then
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc handles incomplete characters" >&5
+printf %s "checking whether mbrtowc handles incomplete characters... " >&6; }
+if test ${gl_cv_func_mbrtowc_incomplete_state+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                     # Guess no on AIX and OSF/1.
+        aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;
+                     # Guess yes otherwise.
+        *)           gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;
+      esac
+      if test $LOCALE_JA != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_incomplete_state=yes
+else $as_nop
+  gl_cv_func_mbrtowc_incomplete_state=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      else
+        if test $LOCALE_FR_UTF8 != none; then
+          if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      const char input[] = "B\303\274\303\237er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_incomplete_state=yes
+else $as_nop
+  gl_cv_func_mbrtowc_incomplete_state=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        fi
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_incomplete_state" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_incomplete_state" >&6; }
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc works as well as mbtowc" >&5
+printf %s "checking whether mbrtowc works as well as mbtowc... " >&6; }
+if test ${gl_cv_func_mbrtowc_sanitycheck+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                    # Guess no on Solaris 8.
+        solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;
+                    # Guess yes otherwise.
+        *)          gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;
+      esac
+      if test $LOCALE_ZH_CN != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  /* This fails on Solaris 8:
+     mbrtowc returns 2, and sets wc to 0x00F0.
+     mbtowc returns 4 (correct) and sets wc to 0x5EDC.  */
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 6, &state) != 4
+          && mbtowc (&wc, input + 3, 6) == 4)
+        return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_sanitycheck=yes
+else $as_nop
+  gl_cv_func_mbrtowc_sanitycheck=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_sanitycheck" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_sanitycheck" >&6; }
+
+    REPLACE_MBSTATE_T=0
+    case "$gl_cv_func_mbrtowc_incomplete_state" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+    case "$gl_cv_func_mbrtowc_sanitycheck" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+  else
+    REPLACE_MBSTATE_T=1
+  fi
+
+
+
+  if test $ac_cv_func_mbrtowc = no; then
+    HAVE_MBRTOWC=0
+    ac_fn_check_decl "$LINENO" "mbrtowc" "ac_cv_have_decl_mbrtowc" "
+      #include <wchar.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_mbrtowc" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_MBRTOWC $ac_have_decl" >>confdefs.h
+
+    if test $ac_cv_have_decl_mbrtowc = yes; then
+                        REPLACE_MBRTOWC=1
+    fi
+  else
+    if test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_MBRTOWC=1
+    else
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc handles a NULL pwc argument" >&5
+printf %s "checking whether mbrtowc handles a NULL pwc argument... " >&6; }
+if test ${gl_cv_func_mbrtowc_null_arg1+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                  # Guess no on Solaris.
+        solaris*) gl_cv_func_mbrtowc_null_arg1="guessing no" ;;
+                  # Guess yes otherwise.
+        *)        gl_cv_func_mbrtowc_null_arg1="guessing yes" ;;
+      esac
+      if test $LOCALE_FR_UTF8 != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  int result = 0;
+
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      char input[] = "\303\237er";
+      mbstate_t state;
+      wchar_t wc;
+      size_t ret;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      wc = (wchar_t) 0xBADFACE;
+      ret = mbrtowc (&wc, input, 5, &state);
+      if (ret != 2)
+        result |= 1;
+      if (!mbsinit (&state))
+        result |= 2;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      ret = mbrtowc (NULL, input, 5, &state);
+      if (ret != 2) /* Solaris 7 fails here: ret is -1.  */
+        result |= 4;
+      if (!mbsinit (&state))
+        result |= 8;
+    }
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_null_arg1=yes
+else $as_nop
+  gl_cv_func_mbrtowc_null_arg1=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_null_arg1" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_null_arg1" >&6; }
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc handles a NULL string argument" >&5
+printf %s "checking whether mbrtowc handles a NULL string argument... " >&6; }
+if test ${gl_cv_func_mbrtowc_null_arg2+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+              # Guess no on OSF/1.
+        osf*) gl_cv_func_mbrtowc_null_arg2="guessing no" ;;
+              # Guess yes otherwise.
+        *)    gl_cv_func_mbrtowc_null_arg2="guessing yes" ;;
+      esac
+      if test $LOCALE_FR_UTF8 != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      mbstate_t state;
+      wchar_t wc;
+      int ret;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      wc = (wchar_t) 0xBADFACE;
+      mbrtowc (&wc, NULL, 5, &state);
+      /* Check that wc was not modified.  */
+      if (wc != (wchar_t) 0xBADFACE)
+        return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_null_arg2=yes
+else $as_nop
+  gl_cv_func_mbrtowc_null_arg2=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_null_arg2" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_null_arg2" >&6; }
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc has a correct return value" >&5
+printf %s "checking whether mbrtowc has a correct return value... " >&6; }
+if test ${gl_cv_func_mbrtowc_retval+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                                   # Guess no on HP-UX, Solaris, native Windows.
+        hpux* | solaris* | mingw*) gl_cv_func_mbrtowc_retval="guessing no" ;;
+                                   # Guess yes otherwise.
+        *)                         gl_cv_func_mbrtowc_retval="guessing yes" ;;
+      esac
+      if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none \
+         || { case "$host_os" in mingw*) true;; *) false;; esac; }; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  int result = 0;
+  int found_some_locale = 0;
+  /* This fails on Solaris.  */
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      char input[] = "B\303\274\303\237er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        {
+          input[1] = '\0';
+          if (mbrtowc (&wc, input + 2, 5, &state) != 1)
+            result |= 1;
+        }
+      found_some_locale = 1;
+    }
+  /* This fails on HP-UX 11.11.  */
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        {
+          input[1] = '\0';
+          if (mbrtowc (&wc, input + 2, 5, &state) != 2)
+            result |= 2;
+        }
+      found_some_locale = 1;
+    }
+  /* This fails on native Windows.  */
+  if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL)
+    {
+      char input[] = "<\223\372\226\173\214\352>"; /* "<日本語>" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
+        {
+          input[3] = '\0';
+          if (mbrtowc (&wc, input + 4, 4, &state) != 1)
+            result |= 4;
+        }
+      found_some_locale = 1;
+    }
+  if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL)
+    {
+      char input[] = "<\244\351\245\273\273\171>"; /* "<日本語>" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
+        {
+          input[3] = '\0';
+          if (mbrtowc (&wc, input + 4, 4, &state) != 1)
+            result |= 8;
+        }
+      found_some_locale = 1;
+    }
+  if (setlocale (LC_ALL, "Chinese_China.936") != NULL)
+    {
+      char input[] = "<\310\325\261\276\325\132>"; /* "<日本語>" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
+        {
+          input[3] = '\0';
+          if (mbrtowc (&wc, input + 4, 4, &state) != 1)
+            result |= 16;
+        }
+      found_some_locale = 1;
+    }
+  return (found_some_locale ? result : 77);
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_retval=yes
+else $as_nop
+  if test $? != 77; then
+             gl_cv_func_mbrtowc_retval=no
+           fi
+
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_retval" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_retval" >&6; }
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc returns 0 when parsing a NUL character" >&5
+printf %s "checking whether mbrtowc returns 0 when parsing a NUL character... " >&6; }
+if test ${gl_cv_func_mbrtowc_nul_retval+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                       # Guess no on Solaris 8 and 9.
+        solaris2.[89]) gl_cv_func_mbrtowc_nul_retval="guessing no" ;;
+                       # Guess yes otherwise.
+        *)             gl_cv_func_mbrtowc_nul_retval="guessing yes" ;;
+      esac
+      if test $LOCALE_ZH_CN != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  /* This fails on Solaris 8 and 9.  */
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "", 1, &state) != 0)
+        return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_nul_retval=yes
+else $as_nop
+  gl_cv_func_mbrtowc_nul_retval=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_nul_retval" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_nul_retval" >&6; }
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc stores incomplete characters" >&5
+printf %s "checking whether mbrtowc stores incomplete characters... " >&6; }
+if test ${gl_cv_func_mbrtowc_stores_incomplete+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+               case "$host_os" in
+               # Guess yes on native Windows.
+       mingw*) gl_cv_func_mbrtowc_stores_incomplete="guessing yes" ;;
+       *)      gl_cv_func_mbrtowc_stores_incomplete="guessing no" ;;
+     esac
+     case "$host_os" in
+       mingw*)
+         if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  int result = 0;
+  if (setlocale (LC_ALL, "French_France.65001") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\303", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        result |= 1;
+    }
+  if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\226", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        result |= 2;
+    }
+  if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\245", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        result |= 4;
+    }
+  if (setlocale (LC_ALL, "Chinese_China.936") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\261", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        result |= 8;
+    }
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_stores_incomplete=no
+else $as_nop
+  gl_cv_func_mbrtowc_stores_incomplete=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+         ;;
+       *)
+
+         if test $LOCALE_FR_UTF8 != none; then
+           if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\303", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        return 1;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_stores_incomplete=no
+else $as_nop
+  gl_cv_func_mbrtowc_stores_incomplete=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+         fi
+         ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_stores_incomplete" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_stores_incomplete" >&6; }
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc works on empty input" >&5
+printf %s "checking whether mbrtowc works on empty input... " >&6; }
+if test ${gl_cv_func_mbrtowc_empty_input+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                              # Guess no on AIX and glibc systems.
+        aix* | *-gnu* | gnu*) gl_cv_func_mbrtowc_empty_input="guessing no" ;;
+                              # Guess yes on native Windows.
+        mingw*)               gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
+        *)                    gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
+      esac
+      if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+           #include <wchar.h>
+           static wchar_t wc;
+           static mbstate_t mbs;
+           int
+           main (void)
+           {
+             return mbrtowc (&wc, "", 0, &mbs) != (size_t) -2;
+           }
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_empty_input=yes
+else $as_nop
+  gl_cv_func_mbrtowc_empty_input=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_empty_input" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_empty_input" >&6; }
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the C locale is free of encoding errors" >&5
+printf %s "checking whether the C locale is free of encoding errors... " >&6; }
+if test ${gl_cv_func_mbrtowc_C_locale_sans_EILSEQ+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+               gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="$gl_cross_guess_normal"
+
+     if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                 # Guess yes on native Windows.
+         mingw*) gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="guessing yes" ;;
+       esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+            #include <locale.h>
+            #include <wchar.h>
+
+int
+main (void)
+{
+
+            int i;
+            char *locale = setlocale (LC_ALL, "C");
+            if (! locale)
+              return 2;
+            for (i = CHAR_MIN; i <= CHAR_MAX; i++)
+              {
+                char c = i;
+                wchar_t wc;
+                mbstate_t mbs = { 0, };
+                size_t ss = mbrtowc (&wc, &c, 1, &mbs);
+                if (1 < ss)
+                  return 3;
+              }
+            return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_C_locale_sans_EILSEQ=yes
+else $as_nop
+  gl_cv_func_mbrtowc_C_locale_sans_EILSEQ=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_C_locale_sans_EILSEQ" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_C_locale_sans_EILSEQ" >&6; }
+
+      case "$gl_cv_func_mbrtowc_null_arg1" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_NULL_ARG1_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_null_arg2" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_NULL_ARG2_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_retval" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_RETVAL_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_nul_retval" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_NUL_RETVAL_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_stores_incomplete" in
+        *no) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_STORES_INCOMPLETE_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_empty_input" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_EMPTY_INPUT_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_C_locale_sans_EILSEQ" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_IN_C_LOCALE_MAYBE_EILSEQ 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+    fi
+  fi
+  if test $REPLACE_MBSTATE_T = 1; then
+    case "$host_os" in
+      mingw*) LIB_MBRTOWC= ;;
+      *)
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether imported symbols can be declared weak" >&5
+printf %s "checking whether imported symbols can be declared weak... " >&6; }
+if test ${gl_cv_have_weak+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_cv_have_weak=no
+          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern void xyzzy ();
+#pragma weak xyzzy
+int
+main (void)
+{
+xyzzy();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_have_weak=maybe
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+     if test $gl_cv_have_weak = maybe; then
+                     if test "$cross_compiling" = yes
+then :
+                      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __ELF__
+             Extensible Linking Format
+             #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Extensible Linking Format" >/dev/null 2>&1
+then :
+  gl_cv_have_weak="guessing yes"
+else $as_nop
+  gl_cv_have_weak="guessing no"
+fi
+rm -rf conftest*
+
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#pragma weak fputs
+int main ()
+{
+  return (fputs == NULL);
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_have_weak=yes
+else $as_nop
+  gl_cv_have_weak=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+     fi
+          case " $LDFLAGS " in
+       *" -static "*) gl_cv_have_weak=no ;;
+     esac
+                    case "$gl_cv_have_weak" in
+       *yes)
+         case "$host_os" in
+           freebsd* | dragonfly* | midnightbsd*)
+             : > conftest1.c
+             $CC $CPPFLAGS $CFLAGS $LDFLAGS -fPIC -shared -o libempty.so conftest1.c -lpthread >&5 2>&1
+             cat <<EOF > conftest2.c
+#include <pthread.h>
+#pragma weak pthread_mutexattr_gettype
+int main ()
+{
+  return (pthread_mutexattr_gettype != NULL);
+}
+EOF
+             $CC $CPPFLAGS $CFLAGS $LDFLAGS -o conftest conftest2.c libempty.so >&5 2>&1 \
+               || gl_cv_have_weak=no
+             rm -f conftest1.c libempty.so conftest2.c conftest
+             ;;
+         esac
+         ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_have_weak" >&5
+printf "%s\n" "$gl_cv_have_weak" >&6; }
+  case "$gl_cv_have_weak" in
+    *yes)
+
+printf "%s\n" "#define HAVE_WEAK_SYMBOLS 1" >>confdefs.h
+
+      ;;
+  esac
+
+        case "$gl_cv_have_weak" in
+          *yes) LIB_MBRTOWC= ;;
+          *)    LIB_MBRTOWC="$LIBPTHREAD" ;;
+        esac
+        ;;
+    esac
+  else
+    LIB_MBRTOWC=
+  fi
+
+
+
+
+
+  GL_GNULIB_EXPLICIT_BZERO=0
+
+
+
+  GL_GNULIB_FFSL=0
+
+
+
+  GL_GNULIB_FFSLL=0
+
+
+
+  GL_GNULIB_MEMCHR=0
+
+
+
+  GL_GNULIB_MEMMEM=0
+
+
+
+  GL_GNULIB_MEMPCPY=0
+
+
+
+  GL_GNULIB_MEMRCHR=0
+
+
+
+  GL_GNULIB_RAWMEMCHR=0
+
+
+
+  GL_GNULIB_STPCPY=0
+
+
+
+  GL_GNULIB_STPNCPY=0
+
+
+
+  GL_GNULIB_STRCHRNUL=0
+
+
+
+  GL_GNULIB_STRDUP=0
+
+
+
+  GL_GNULIB_STRNCAT=0
+
+
+
+  GL_GNULIB_STRNDUP=0
+
+
+
+  GL_GNULIB_STRNLEN=0
+
+
+
+  GL_GNULIB_STRPBRK=0
+
+
+
+  GL_GNULIB_STRSEP=0
+
+
+
+  GL_GNULIB_STRSTR=0
+
+
+
+  GL_GNULIB_STRCASESTR=0
+
+
+
+  GL_GNULIB_STRTOK_R=0
+
+
+
+  GL_GNULIB_MBSLEN=0
+
+
+
+  GL_GNULIB_MBSNLEN=0
+
+
+
+  GL_GNULIB_MBSCHR=0
+
+
+
+  GL_GNULIB_MBSRCHR=0
+
+
+
+  GL_GNULIB_MBSSTR=0
+
+
+
+  GL_GNULIB_MBSCASECMP=0
+
+
+
+  GL_GNULIB_MBSNCASECMP=0
+
+
+
+  GL_GNULIB_MBSPCASECMP=0
+
+
+
+  GL_GNULIB_MBSCASESTR=0
+
+
+
+  GL_GNULIB_MBSCSPN=0
+
+
+
+  GL_GNULIB_MBSPBRK=0
+
+
+
+  GL_GNULIB_MBSSPN=0
+
+
+
+  GL_GNULIB_MBSSEP=0
+
+
+
+  GL_GNULIB_MBSTOK_R=0
+
+
+
+  GL_GNULIB_STRERROR=0
+
+
+
+  GL_GNULIB_STRERROR_R=0
+
+
+
+  GL_GNULIB_STRERRORNAME_NP=0
+
+
+
+  GL_GNULIB_SIGABBREV_NP=0
+
+
+
+  GL_GNULIB_SIGDESCR_NP=0
+
+
+
+  GL_GNULIB_STRSIGNAL=0
+
+
+
+  GL_GNULIB_STRVERSCMP=0
+
+
+
+  GL_GNULIB_MDA_MEMCCPY=1
+
+
+
+  GL_GNULIB_MDA_STRDUP=1
+
+
+
+
+  HAVE_MBSLEN=0;
+    HAVE_EXPLICIT_BZERO=1;
+  HAVE_FFSL=1;
+  HAVE_FFSLL=1;
+  HAVE_DECL_MEMMEM=1;
+  HAVE_MEMPCPY=1;
+  HAVE_DECL_MEMRCHR=1;
+  HAVE_RAWMEMCHR=1;
+  HAVE_STPCPY=1;
+  HAVE_STPNCPY=1;
+  HAVE_STRCHRNUL=1;
+  HAVE_DECL_STRDUP=1;
+  HAVE_DECL_STRNDUP=1;
+  HAVE_DECL_STRNLEN=1;
+  HAVE_STRPBRK=1;
+  HAVE_STRSEP=1;
+  HAVE_STRCASESTR=1;
+  HAVE_DECL_STRTOK_R=1;
+  HAVE_DECL_STRERROR_R=1;
+  HAVE_STRERRORNAME_NP=1;
+  HAVE_SIGABBREV_NP=1;
+  HAVE_SIGDESCR_NP=1;
+  HAVE_DECL_STRSIGNAL=1;
+  HAVE_STRVERSCMP=1;
+  REPLACE_FFSLL=0;
+  REPLACE_MEMCHR=0;
+  REPLACE_MEMMEM=0;
+  REPLACE_STPNCPY=0;
+  REPLACE_STRCHRNUL=0;
+  REPLACE_STRDUP=0;
+  REPLACE_STRNCAT=0;
+  REPLACE_STRNDUP=0;
+  REPLACE_STRNLEN=0;
+  REPLACE_STRSTR=0;
+  REPLACE_STRCASESTR=0;
+  REPLACE_STRTOK_R=0;
+  REPLACE_STRERROR=0;
+  REPLACE_STRERROR_R=0;
+  REPLACE_STRERRORNAME_NP=0;
+  REPLACE_STRSIGNAL=0;
+  UNDEFINE_STRTOK_R=0;
+
+
+
+
+
+  # Check for mmap(). Don't use AC_FUNC_MMAP, because it checks too much: it
+  # fails on HP-UX 11, because MAP_FIXED mappings do not work. But this is
+  # irrelevant for anonymous mappings.
+  ac_fn_c_check_func "$LINENO" "mmap" "ac_cv_func_mmap"
+if test "x$ac_cv_func_mmap" = xyes
+then :
+  gl_have_mmap=yes
+else $as_nop
+  gl_have_mmap=no
+fi
+
+
+  # Try to allow MAP_ANONYMOUS.
+  gl_have_mmap_anonymous=no
+  if test $gl_have_mmap = yes; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for MAP_ANONYMOUS" >&5
+printf %s "checking for MAP_ANONYMOUS... " >&6; }
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/mman.h>
+#ifdef MAP_ANONYMOUS
+    I cannot identify this map
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "I cannot identify this map" >/dev/null 2>&1
+then :
+  gl_have_mmap_anonymous=yes
+fi
+rm -rf conftest*
+
+    if test $gl_have_mmap_anonymous != yes; then
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/mman.h>
+#ifdef MAP_ANON
+    I cannot identify this map
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "I cannot identify this map" >/dev/null 2>&1
+then :
+
+printf "%s\n" "#define MAP_ANONYMOUS MAP_ANON" >>confdefs.h
+
+         gl_have_mmap_anonymous=yes
+fi
+rm -rf conftest*
+
+    fi
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_have_mmap_anonymous" >&5
+printf "%s\n" "$gl_have_mmap_anonymous" >&6; }
+    if test $gl_have_mmap_anonymous = yes; then
+
+printf "%s\n" "#define HAVE_MAP_ANONYMOUS 1" >>confdefs.h
+
+    fi
+  fi
+
+
+
+
+
+
+
+
+
+
+  # Detect platform-specific bugs in some versions of glibc:
+  # memchr should not dereference anything with length 0
+  #   https://bugzilla.redhat.com/show_bug.cgi?id=499689
+  # memchr should not dereference overestimated length after a match
+  #   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=521737
+  #   https://sourceware.org/bugzilla/show_bug.cgi?id=10162
+  # memchr should cast the second argument to 'unsigned char'.
+  #   This bug exists in Android 4.3.
+  # Assume that memchr works on platforms that lack mprotect.
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether memchr works" >&5
+printf %s "checking whether memchr works... " >&6; }
+if test ${gl_cv_func_memchr_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                           # Guess no on Android.
+          linux*-android*) gl_cv_func_memchr_works="guessing no" ;;
+                           # Guess yes on native Windows.
+          mingw*)          gl_cv_func_memchr_works="guessing yes" ;;
+                           # If we don't know, obey --enable-cross-guesses.
+          *)               gl_cv_func_memchr_works="$gl_cross_guess_normal" ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <string.h>
+#if HAVE_SYS_MMAN_H
+# include <fcntl.h>
+# include <unistd.h>
+# include <sys/types.h>
+# include <sys/mman.h>
+# ifndef MAP_FILE
+#  define MAP_FILE 0
+# endif
+#endif
+
+int
+main (void)
+{
+
+  int result = 0;
+  char *fence = NULL;
+#if HAVE_SYS_MMAN_H && HAVE_MPROTECT
+# if HAVE_MAP_ANONYMOUS
+  const int flags = MAP_ANONYMOUS | MAP_PRIVATE;
+  const int fd = -1;
+# else /* !HAVE_MAP_ANONYMOUS */
+  const int flags = MAP_FILE | MAP_PRIVATE;
+  int fd = open ("/dev/zero", O_RDONLY, 0666);
+  if (fd >= 0)
+# endif
+    {
+      int pagesize = getpagesize ();
+      char *two_pages =
+        (char *) mmap (NULL, 2 * pagesize, PROT_READ | PROT_WRITE,
+                       flags, fd, 0);
+      if (two_pages != (char *)(-1)
+          && mprotect (two_pages + pagesize, pagesize, PROT_NONE) == 0)
+        fence = two_pages + pagesize;
+    }
+#endif
+  if (fence)
+    {
+      /* Test against bugs on glibc systems.  */
+      if (memchr (fence, 0, 0))
+        result |= 1;
+      strcpy (fence - 9, "12345678");
+      if (memchr (fence - 9, 0, 79) != fence - 1)
+        result |= 2;
+      if (memchr (fence - 1, 0, 3) != fence - 1)
+        result |= 4;
+      /* Test against bug on AIX 7.2.  */
+      if (memchr (fence - 4, '6', 16) != fence - 4)
+        result |= 8;
+    }
+  /* Test against bug on Android 4.3.  */
+  {
+    char input[3];
+    input[0] = 'a';
+    input[1] = 'b';
+    input[2] = 'c';
+    if (memchr (input, 0x789abc00 | 'b', 3) != input + 1)
+      result |= 16;
+  }
+  return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_memchr_works=yes
+else $as_nop
+  gl_cv_func_memchr_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_memchr_works" >&5
+printf "%s\n" "$gl_cv_func_memchr_works" >&6; }
+  case "$gl_cv_func_memchr_works" in
+    *yes) ;;
+    *) REPLACE_MEMCHR=1 ;;
+  esac
+
+ac_fn_check_decl "$LINENO" "memrchr" "ac_cv_have_decl_memrchr" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_memrchr" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_MEMRCHR $ac_have_decl" >>confdefs.h
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether <limits.h> defines MIN and MAX" >&5
+printf %s "checking whether <limits.h> defines MIN and MAX... " >&6; }
+if test ${gl_cv_minmax_in_limits_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+            int x = MIN (42, 17);
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_minmax_in_limits_h=yes
+else $as_nop
+  gl_cv_minmax_in_limits_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_minmax_in_limits_h" >&5
+printf "%s\n" "$gl_cv_minmax_in_limits_h" >&6; }
+  if test $gl_cv_minmax_in_limits_h = yes; then
+
+printf "%s\n" "#define HAVE_MINMAX_IN_LIMITS_H 1" >>confdefs.h
+
+  fi
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether <sys/param.h> defines MIN and MAX" >&5
+printf %s "checking whether <sys/param.h> defines MIN and MAX... " >&6; }
+if test ${gl_cv_minmax_in_sys_param_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/param.h>
+            int x = MIN (42, 17);
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_minmax_in_sys_param_h=yes
+else $as_nop
+  gl_cv_minmax_in_sys_param_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_minmax_in_sys_param_h" >&5
+printf "%s\n" "$gl_cv_minmax_in_sys_param_h" >&6; }
+  if test $gl_cv_minmax_in_sys_param_h = yes; then
+
+printf "%s\n" "#define HAVE_MINMAX_IN_SYS_PARAM_H 1" >>confdefs.h
+
+  fi
+
+
+
+
+
+
+
+
+
+
+    HAVE_POSIX_SIGNALBLOCKING=1;
+  HAVE_PTHREAD_SIGMASK=1;
+  HAVE_RAISE=1;
+  HAVE_SIGSET_T=1;
+  HAVE_SIGINFO_T=1;
+  HAVE_SIGACTION=1;
+  HAVE_STRUCT_SIGACTION_SA_SIGACTION=1;
+
+  HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=1;
+
+  HAVE_SIGHANDLER_T=1;
+  REPLACE_PTHREAD_SIGMASK=0;
+  REPLACE_RAISE=0;
+
+
+  ac_fn_c_check_type "$LINENO" "sigset_t" "ac_cv_type_sigset_t" "
+      #include <signal.h>
+      /* Mingw defines sigset_t not in <signal.h>, but in <sys/types.h>.  */
+      #include <sys/types.h>
+
+"
+if test "x$ac_cv_type_sigset_t" = xyes
+then :
+
+printf "%s\n" "#define HAVE_SIGSET_T 1" >>confdefs.h
+
+gl_cv_type_sigset_t=yes
+else $as_nop
+  gl_cv_type_sigset_t=no
+fi
+
+  if test $gl_cv_type_sigset_t != yes; then
+    HAVE_SIGSET_T=0
+  fi
+
+
+
+  GL_GNULIB_PTHREAD_SIGMASK=0
+
+
+
+  GL_GNULIB_RAISE=0
+
+
+
+  GL_GNULIB_SIGNAL_H_SIGPIPE=0
+
+
+
+  GL_GNULIB_SIGPROCMASK=0
+
+
+
+  GL_GNULIB_SIGACTION=0
+
+
+
+
+
+
+  if test $REPLACE_MALLOC = 1; then
+    REPLACE_REALLOC=1
+  fi
+
+ac_fn_check_decl "$LINENO" "alarm" "ac_cv_have_decl_alarm" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_alarm" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_ALARM $ac_have_decl" >>confdefs.h
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ssize_t" >&5
+printf %s "checking for ssize_t... " >&6; }
+if test ${gt_cv_ssize_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+int
+main (void)
+{
+int x = sizeof (ssize_t *) + sizeof (ssize_t);
+            return !x;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gt_cv_ssize_t=yes
+else $as_nop
+  gt_cv_ssize_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_ssize_t" >&5
+printf "%s\n" "$gt_cv_ssize_t" >&6; }
+  if test $gt_cv_ssize_t = no; then
+
+printf "%s\n" "#define ssize_t int" >>confdefs.h
+
+  fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for uid_t in sys/types.h" >&5
+printf %s "checking for uid_t in sys/types.h... " >&6; }
+if test ${ac_cv_type_uid_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "uid_t" >/dev/null 2>&1
+then :
+  ac_cv_type_uid_t=yes
+else $as_nop
+  ac_cv_type_uid_t=no
+fi
+rm -rf conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_uid_t" >&5
+printf "%s\n" "$ac_cv_type_uid_t" >&6; }
+if test $ac_cv_type_uid_t = no; then
+
+printf "%s\n" "#define uid_t int" >>confdefs.h
+
+
+printf "%s\n" "#define gid_t int" >>confdefs.h
+
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_signal_h='<'signal.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <signal.h>" >&5
+printf %s "checking absolute name of <signal.h>... " >&6; }
+if test ${gl_cv_next_signal_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <signal.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'signal.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_signal_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_signal_h
+           gl_cv_next_signal_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_signal_h" >&5
+printf "%s\n" "$gl_cv_next_signal_h" >&6; }
+     fi
+     NEXT_SIGNAL_H=$gl_cv_next_signal_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'signal.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_signal_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H=$gl_next_as_first_directive
+
+
+
+
+
+# AIX declares sig_atomic_t to already include volatile, and C89 compilers
+# then choke on 'volatile sig_atomic_t'.  C99 requires that it compile.
+  ac_fn_c_check_type "$LINENO" "volatile sig_atomic_t" "ac_cv_type_volatile_sig_atomic_t" "
+#include <signal.h>
+
+"
+if test "x$ac_cv_type_volatile_sig_atomic_t" = xyes
+then :
+
+else $as_nop
+  HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=0
+fi
+
+
+
+
+
+
+
+  ac_fn_c_check_type "$LINENO" "sighandler_t" "ac_cv_type_sighandler_t" "
+#include <signal.h>
+
+"
+if test "x$ac_cv_type_sighandler_t" = xyes
+then :
+
+else $as_nop
+  HAVE_SIGHANDLER_T=0
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdbool.h that conforms to C99" >&5
+printf %s "checking for stdbool.h that conforms to C99... " >&6; }
+if test ${ac_cv_header_stdbool_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+             #include <stdbool.h>
+
+             #ifdef __cplusplus
+              typedef bool Bool;
+             #else
+              typedef _Bool Bool;
+              #ifndef bool
+               "error: bool is not defined"
+              #endif
+              #ifndef false
+               "error: false is not defined"
+              #endif
+              #if false
+               "error: false is not 0"
+              #endif
+              #ifndef true
+               "error: true is not defined"
+              #endif
+              #if true != 1
+               "error: true is not 1"
+              #endif
+             #endif
+
+             #ifndef __bool_true_false_are_defined
+              "error: __bool_true_false_are_defined is not defined"
+             #endif
+
+             struct s { Bool s: 1; Bool t; bool u: 1; bool v; } s;
+
+             char a[true == 1 ? 1 : -1];
+             char b[false == 0 ? 1 : -1];
+             char c[__bool_true_false_are_defined == 1 ? 1 : -1];
+             char d[(bool) 0.5 == true ? 1 : -1];
+             /* See body of main program for 'e'.  */
+             char f[(Bool) 0.0 == false ? 1 : -1];
+             char g[true];
+             char h[sizeof (Bool)];
+             char i[sizeof s.t];
+             enum { j = false, k = true, l = false * true, m = true * 256 };
+             /* The following fails for
+                HP aC++/ANSI C B3910B A.05.55 [Dec 04 2003]. */
+             Bool n[m];
+             char o[sizeof n == m * sizeof n[0] ? 1 : -1];
+             char p[-1 - (Bool) 0 < 0 && -1 - (bool) 0 < 0 ? 1 : -1];
+             /* Catch a bug in an HP-UX C compiler.  See
+                https://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
+                https://lists.gnu.org/r/bug-coreutils/2005-11/msg00161.html
+              */
+             Bool q = true;
+             Bool *pq = &q;
+             bool *qq = &q;
+
+int
+main (void)
+{
+
+             bool e = &s;
+             *pq |= q; *pq |= ! q;
+             *qq |= q; *qq |= ! q;
+             /* Refer to every declared value, to avoid compiler optimizations.  */
+             return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !!j + !k + !!l
+                     + !m + !n + !o + !p + !q + !pq + !qq);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_header_stdbool_h=yes
+else $as_nop
+  ac_cv_header_stdbool_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdbool_h" >&5
+printf "%s\n" "$ac_cv_header_stdbool_h" >&6; }
+   ac_fn_c_check_type "$LINENO" "_Bool" "ac_cv_type__Bool" "$ac_includes_default"
+if test "x$ac_cv_type__Bool" = xyes
+then :
+
+printf "%s\n" "#define HAVE__BOOL 1" >>confdefs.h
+
+
+fi
+
+
+
+
+ac_fn_check_decl "$LINENO" "fcloseall" "ac_cv_have_decl_fcloseall" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_fcloseall" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_FCLOSEALL $ac_have_decl" >>confdefs.h
+
+
+
+
+  printf "%s\n" "#define __USE_MINGW_ANSI_STDIO 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_stdio_h='<'stdio.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <stdio.h>" >&5
+printf %s "checking absolute name of <stdio.h>... " >&6; }
+if test ${gl_cv_next_stdio_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdio.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'stdio.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_stdio_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_stdio_h
+           gl_cv_next_stdio_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_stdio_h" >&5
+printf "%s\n" "$gl_cv_next_stdio_h" >&6; }
+     fi
+     NEXT_STDIO_H=$gl_cv_next_stdio_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'stdio.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_stdio_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_STDIO_H=$gl_next_as_first_directive
+
+
+
+
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking which flavor of printf attribute matches inttypes macros" >&5
+printf %s "checking which flavor of printf attribute matches inttypes macros... " >&6; }
+if test ${gl_cv_func_printf_attribute_flavor+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+       #define __STDC_FORMAT_MACROS 1
+       #include <stdio.h>
+       #include <inttypes.h>
+       /* For non-mingw systems, compilation will trivially succeed.
+          For mingw, compilation will succeed for older mingw (system
+          printf, "I64d") and fail for newer mingw (gnu printf, "lld"). */
+       #if (defined _WIN32 && ! defined __CYGWIN__) && \
+         (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+       extern char PRIdMAX_probe[sizeof PRIdMAX == sizeof "I64d" ? 1 : -1];
+       #endif
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_printf_attribute_flavor=system
+else $as_nop
+  gl_cv_func_printf_attribute_flavor=gnu
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_printf_attribute_flavor" >&5
+printf "%s\n" "$gl_cv_func_printf_attribute_flavor" >&6; }
+  if test "$gl_cv_func_printf_attribute_flavor" = gnu; then
+
+printf "%s\n" "#define GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU 1" >>confdefs.h
+
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+  if test $ac_cv_have_decl_fcloseall = no; then
+    HAVE_DECL_FCLOSEALL=0
+  fi
+
+ac_fn_check_decl "$LINENO" "ecvt" "ac_cv_have_decl_ecvt" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_ecvt" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_ECVT $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "fcvt" "ac_cv_have_decl_fcvt" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_fcvt" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_FCVT $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "gcvt" "ac_cv_have_decl_gcvt" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_gcvt" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_GCVT $ac_have_decl" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_stdlib_h='<'stdlib.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <stdlib.h>" >&5
+printf %s "checking absolute name of <stdlib.h>... " >&6; }
+if test ${gl_cv_next_stdlib_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'stdlib.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_stdlib_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_stdlib_h
+           gl_cv_next_stdlib_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_stdlib_h" >&5
+printf "%s\n" "$gl_cv_next_stdlib_h" >&6; }
+     fi
+     NEXT_STDLIB_H=$gl_cv_next_stdlib_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'stdlib.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_stdlib_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_STDLIB_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+
+
+
+
+
+  if test $ac_cv_have_decl_ecvt = no; then
+    HAVE_DECL_ECVT=0
+  fi
+
+  if test $ac_cv_have_decl_fcvt = no; then
+    HAVE_DECL_FCVT=0
+  fi
+
+  if test $ac_cv_have_decl_gcvt = no; then
+    HAVE_DECL_GCVT=0
+  fi
+
+ac_fn_check_decl "$LINENO" "strdup" "ac_cv_have_decl_strdup" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_strdup" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_STRDUP $ac_have_decl" >>confdefs.h
+
+
+     REPLACE_STRERROR_0=0
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether strerror(0) succeeds" >&5
+printf %s "checking whether strerror(0) succeeds... " >&6; }
+if test ${gl_cv_func_strerror_0_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                        # Guess yes on glibc systems.
+         *-gnu* | gnu*) gl_cv_func_strerror_0_works="guessing yes" ;;
+                        # Guess yes on musl systems.
+         *-musl*)       gl_cv_func_strerror_0_works="guessing yes" ;;
+                        # Guess yes on native Windows.
+         mingw*)        gl_cv_func_strerror_0_works="guessing yes" ;;
+                        # If we don't know, obey --enable-cross-guesses.
+         *)             gl_cv_func_strerror_0_works="$gl_cross_guess_normal" ;;
+       esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <string.h>
+           #include <errno.h>
+
+int
+main (void)
+{
+int result = 0;
+           char *str;
+           errno = 0;
+           str = strerror (0);
+           if (!*str) result |= 1;
+           if (errno) result |= 2;
+           if (strstr (str, "nknown") || strstr (str, "ndefined"))
+             result |= 4;
+           return result;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_strerror_0_works=yes
+else $as_nop
+  gl_cv_func_strerror_0_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_strerror_0_works" >&5
+printf "%s\n" "$gl_cv_func_strerror_0_works" >&6; }
+  case "$gl_cv_func_strerror_0_works" in
+    *yes) ;;
+    *)
+      REPLACE_STRERROR_0=1
+
+printf "%s\n" "#define REPLACE_STRERROR_0 1" >>confdefs.h
+
+      ;;
+  esac
+
+
+
+
+
+
+
+
+  if test $ac_cv_func_strerror_r = yes; then
+    if test "$ERRNO_H:$REPLACE_STRERROR_0" = :0; then
+                        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for strerror_r with POSIX signature" >&5
+printf %s "checking for strerror_r with POSIX signature... " >&6; }
+if test ${gl_cv_func_strerror_r_posix_signature+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <string.h>
+                int strerror_r (int, char *, size_t);
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_strerror_r_posix_signature=yes
+else $as_nop
+  gl_cv_func_strerror_r_posix_signature=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_strerror_r_posix_signature" >&5
+printf "%s\n" "$gl_cv_func_strerror_r_posix_signature" >&6; }
+      if test $gl_cv_func_strerror_r_posix_signature = yes; then
+                                                        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether strerror_r works" >&5
+printf %s "checking whether strerror_r works... " >&6; }
+if test ${gl_cv_func_strerror_r_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+
+              case "$host_os" in
+                       # Guess no on AIX.
+                aix*)  gl_cv_func_strerror_r_works="guessing no";;
+                       # Guess no on HP-UX.
+                hpux*) gl_cv_func_strerror_r_works="guessing no";;
+                       # Guess no on BSD variants.
+                *bsd*)  gl_cv_func_strerror_r_works="guessing no";;
+                       # Guess yes otherwise.
+                *)     gl_cv_func_strerror_r_works="guessing yes";;
+              esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <errno.h>
+                  #include <string.h>
+
+int
+main (void)
+{
+int result = 0;
+                  char buf[79];
+                  if (strerror_r (EACCES, buf, 0) < 0)
+                    result |= 1;
+                  errno = 0;
+                  if (strerror_r (EACCES, buf, sizeof buf) != 0)
+                    result |= 2;
+                  strcpy (buf, "Unknown");
+                  if (strerror_r (0, buf, sizeof buf) != 0)
+                    result |= 4;
+                  if (errno)
+                    result |= 8;
+                  if (strstr (buf, "nknown") || strstr (buf, "ndefined"))
+                    result |= 0x10;
+                  errno = 0;
+                  *buf = 0;
+                  if (strerror_r (-3, buf, sizeof buf) < 0)
+                    result |= 0x20;
+                  if (errno)
+                    result |= 0x40;
+                  if (!*buf)
+                    result |= 0x80;
+                  return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_strerror_r_works=yes
+else $as_nop
+  gl_cv_func_strerror_r_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_strerror_r_works" >&5
+printf "%s\n" "$gl_cv_func_strerror_r_works" >&6; }
+      else
+
+                        if test $ac_cv_func___xpg_strerror_r = yes; then
+          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether __xpg_strerror_r works" >&5
+printf %s "checking whether __xpg_strerror_r works... " >&6; }
+if test ${gl_cv_func_strerror_r_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+                                  gl_cv_func_strerror_r_works="$gl_cross_guess_normal"
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <errno.h>
+                    #include <string.h>
+                    extern
+                    #ifdef __cplusplus
+                    "C"
+                    #endif
+                    int __xpg_strerror_r(int, char *, size_t);
+
+int
+main (void)
+{
+int result = 0;
+                    char buf[256] = "^";
+                    char copy[256];
+                    char *str = strerror (-1);
+                    strcpy (copy, str);
+                    if (__xpg_strerror_r (-2, buf, 1) == 0)
+                      result |= 1;
+                    if (*buf)
+                      result |= 2;
+                    __xpg_strerror_r (-2, buf, 256);
+                    if (strcmp (str, copy))
+                      result |= 4;
+                    return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_strerror_r_works=yes
+else $as_nop
+  gl_cv_func_strerror_r_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_strerror_r_works" >&5
+printf "%s\n" "$gl_cv_func_strerror_r_works" >&6; }
+        fi
+      fi
+    fi
+  fi
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_string_h='<'string.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <string.h>" >&5
+printf %s "checking absolute name of <string.h>... " >&6; }
+if test ${gl_cv_next_string_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <string.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'string.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_string_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_string_h
+           gl_cv_next_string_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_string_h" >&5
+printf "%s\n" "$gl_cv_next_string_h" >&6; }
+     fi
+     NEXT_STRING_H=$gl_cv_next_string_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'string.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_string_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_STRING_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+
+
+
+
+ac_fn_check_decl "$LINENO" "strnlen" "ac_cv_have_decl_strnlen" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_strnlen" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_STRNLEN $ac_have_decl" >>confdefs.h
+
+
+
+
+  if test $REPLACE_MEMCHR = 1; then
+    REPLACE_STRSTR=1
+  else
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether strstr works" >&5
+printf %s "checking whether strstr works... " >&6; }
+if test ${gl_cv_func_strstr_works_always+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+                                                    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <string.h> /* for __GNU_LIBRARY__ */
+#ifdef __GNU_LIBRARY__
+ #include <features.h>
+ #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ > 12) || (__GLIBC__ > 2)) \
+     || defined __UCLIBC__
+  Lucky user
+ #endif
+#elif defined __CYGWIN__
+ #include <cygwin/version.h>
+ #if CYGWIN_VERSION_DLL_COMBINED > CYGWIN_VERSION_DLL_MAKE_COMBINED (1007, 7)
+  Lucky user
+ #endif
+#else
+  Lucky user
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Lucky user" >/dev/null 2>&1
+then :
+  gl_cv_func_strstr_works_always="guessing yes"
+else $as_nop
+  gl_cv_func_strstr_works_always="$gl_cross_guess_normal"
+fi
+rm -rf conftest*
+
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <string.h> /* for __GNU_LIBRARY__, strstr */
+#ifdef __GNU_LIBRARY__
+ #include <features.h>
+ #if __GLIBC__ == 2 && __GLIBC_MINOR__ == 28
+  Unlucky user
+ #endif
+#endif
+#define P "_EF_BF_BD"
+#define HAYSTACK "F_BD_CE_BD" P P P P "_C3_88_20" P P P "_C3_A7_20" P
+#define NEEDLE P P P P P
+
+int
+main (void)
+{
+return !!strstr (HAYSTACK, NEEDLE);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_strstr_works_always=yes
+else $as_nop
+  gl_cv_func_strstr_works_always=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_strstr_works_always" >&5
+printf "%s\n" "$gl_cv_func_strstr_works_always" >&6; }
+    case "$gl_cv_func_strstr_works_always" in
+      *yes) ;;
+      *)
+        REPLACE_STRSTR=1
+        ;;
+    esac
+  fi
+
+
+ac_fn_check_decl "$LINENO" "strtoimax" "ac_cv_have_decl_strtoimax" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_strtoimax" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_STRTOIMAX $ac_have_decl" >>confdefs.h
+
+
+ac_fn_check_decl "$LINENO" "strtoumax" "ac_cv_have_decl_strtoumax" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_strtoumax" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_STRTOUMAX $ac_have_decl" >>confdefs.h
+
+
+
+
+    HAVE_DECL_LOCALTIME_R=1;
+  HAVE_NANOSLEEP=1;
+  HAVE_STRPTIME=1;
+  HAVE_TIMEGM=1;
+  HAVE_TIMESPEC_GET=1;
+    HAVE_TIMEZONE_T=0;
+        REPLACE_CTIME=GNULIB_PORTCHECK;
+  REPLACE_LOCALTIME_R=GNULIB_PORTCHECK;
+  REPLACE_MKTIME=GNULIB_PORTCHECK;
+  REPLACE_NANOSLEEP=GNULIB_PORTCHECK;
+  REPLACE_STRFTIME=GNULIB_PORTCHECK;
+  REPLACE_TIMEGM=GNULIB_PORTCHECK;
+  REPLACE_TZSET=GNULIB_PORTCHECK;
+
+      : ${GNULIB_GETTIMEOFDAY=0};
+        REPLACE_GMTIME=0;
+  REPLACE_LOCALTIME=0;
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for struct timespec in <time.h>" >&5
+printf %s "checking for struct timespec in <time.h>... " >&6; }
+if test ${gl_cv_sys_struct_timespec_in_time_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <time.h>
+
+int
+main (void)
+{
+static struct timespec x; x.tv_sec = x.tv_nsec;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_sys_struct_timespec_in_time_h=yes
+else $as_nop
+  gl_cv_sys_struct_timespec_in_time_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_sys_struct_timespec_in_time_h" >&5
+printf "%s\n" "$gl_cv_sys_struct_timespec_in_time_h" >&6; }
+
+  TIME_H_DEFINES_STRUCT_TIMESPEC=0
+  SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=0
+  PTHREAD_H_DEFINES_STRUCT_TIMESPEC=0
+  UNISTD_H_DEFINES_STRUCT_TIMESPEC=0
+  if test $gl_cv_sys_struct_timespec_in_time_h = yes; then
+    TIME_H_DEFINES_STRUCT_TIMESPEC=1
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for struct timespec in <sys/time.h>" >&5
+printf %s "checking for struct timespec in <sys/time.h>... " >&6; }
+if test ${gl_cv_sys_struct_timespec_in_sys_time_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/time.h>
+
+int
+main (void)
+{
+static struct timespec x; x.tv_sec = x.tv_nsec;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_sys_struct_timespec_in_sys_time_h=yes
+else $as_nop
+  gl_cv_sys_struct_timespec_in_sys_time_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_sys_struct_timespec_in_sys_time_h" >&5
+printf "%s\n" "$gl_cv_sys_struct_timespec_in_sys_time_h" >&6; }
+    if test $gl_cv_sys_struct_timespec_in_sys_time_h = yes; then
+      SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=1
+    else
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for struct timespec in <pthread.h>" >&5
+printf %s "checking for struct timespec in <pthread.h>... " >&6; }
+if test ${gl_cv_sys_struct_timespec_in_pthread_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+
+int
+main (void)
+{
+static struct timespec x; x.tv_sec = x.tv_nsec;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_sys_struct_timespec_in_pthread_h=yes
+else $as_nop
+  gl_cv_sys_struct_timespec_in_pthread_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_sys_struct_timespec_in_pthread_h" >&5
+printf "%s\n" "$gl_cv_sys_struct_timespec_in_pthread_h" >&6; }
+      if test $gl_cv_sys_struct_timespec_in_pthread_h = yes; then
+        PTHREAD_H_DEFINES_STRUCT_TIMESPEC=1
+      else
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for struct timespec in <unistd.h>" >&5
+printf %s "checking for struct timespec in <unistd.h>... " >&6; }
+if test ${gl_cv_sys_struct_timespec_in_unistd_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <unistd.h>
+
+int
+main (void)
+{
+static struct timespec x; x.tv_sec = x.tv_nsec;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_sys_struct_timespec_in_unistd_h=yes
+else $as_nop
+  gl_cv_sys_struct_timespec_in_unistd_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_sys_struct_timespec_in_unistd_h" >&5
+printf "%s\n" "$gl_cv_sys_struct_timespec_in_unistd_h" >&6; }
+        if test $gl_cv_sys_struct_timespec_in_unistd_h = yes; then
+          UNISTD_H_DEFINES_STRUCT_TIMESPEC=1
+        fi
+      fi
+    fi
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_time_h='<'time.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <time.h>" >&5
+printf %s "checking absolute name of <time.h>... " >&6; }
+if test ${gl_cv_next_time_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <time.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'time.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_time_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_time_h
+           gl_cv_next_time_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_time_h" >&5
+printf "%s\n" "$gl_cv_next_time_h" >&6; }
+     fi
+     NEXT_TIME_H=$gl_cv_next_time_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'time.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_time_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_TIME_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for TIME_UTC in <time.h>" >&5
+printf %s "checking for TIME_UTC in <time.h>... " >&6; }
+if test ${gl_cv_time_h_has_TIME_UTC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <time.h>
+
+int
+main (void)
+{
+static int x = TIME_UTC; x++;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_time_h_has_TIME_UTC=yes
+else $as_nop
+  gl_cv_time_h_has_TIME_UTC=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_time_h_has_TIME_UTC" >&5
+printf "%s\n" "$gl_cv_time_h_has_TIME_UTC" >&6; }
+  if test $gl_cv_time_h_has_TIME_UTC = yes; then
+    TIME_H_DEFINES_TIME_UTC=1
+  else
+    TIME_H_DEFINES_TIME_UTC=0
+  fi
+
+
+
+
+  GL_GNULIB_CTIME=0
+
+
+
+  GL_GNULIB_MKTIME=0
+
+
+
+  GL_GNULIB_LOCALTIME=0
+
+
+
+  GL_GNULIB_NANOSLEEP=0
+
+
+
+  GL_GNULIB_STRFTIME=0
+
+
+
+  GL_GNULIB_STRPTIME=0
+
+
+
+  GL_GNULIB_TIMEGM=0
+
+
+
+  GL_GNULIB_TIMESPEC_GET=0
+
+
+
+  GL_GNULIB_TIME_R=0
+
+
+
+  GL_GNULIB_TIME_RZ=0
+
+
+
+  GL_GNULIB_TZSET=0
+
+
+
+  GL_GNULIB_MDA_TZSET=1
+
+
+
+ac_fn_check_decl "$LINENO" "execvpe" "ac_cv_have_decl_execvpe" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_execvpe" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_EXECVPE $ac_have_decl" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_unistd_h='<'unistd.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <unistd.h>" >&5
+printf %s "checking absolute name of <unistd.h>... " >&6; }
+if test ${gl_cv_next_unistd_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_unistd_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <unistd.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'unistd.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_unistd_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_unistd_h
+           gl_cv_next_unistd_h='"'$gl_header'"'
+          else
+               gl_cv_next_unistd_h='<'unistd.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_unistd_h" >&5
+printf "%s\n" "$gl_cv_next_unistd_h" >&6; }
+     fi
+     NEXT_UNISTD_H=$gl_cv_next_unistd_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'unistd.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_unistd_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_UNISTD_H=$gl_next_as_first_directive
+
+
+
+
+  if test $ac_cv_header_unistd_h = yes; then
+    HAVE_UNISTD_H=1
+  else
+    HAVE_UNISTD_H=0
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+  if test $ac_cv_have_decl_execvpe = no; then
+    HAVE_DECL_EXECVPE=0
+  fi
+
+
+
+
+
+
+
+gl_libunistring_sed_extract_major='/^[0-9]/{s/^\([0-9]*\).*/\1/p;q;}
+i\
+0
+q
+'
+gl_libunistring_sed_extract_minor='/^[0-9][0-9]*[.][0-9]/{s/^[0-9]*[.]\([0-9]*\).*/\1/p;q;}
+i\
+0
+q
+'
+gl_libunistring_sed_extract_subminor='/^[0-9][0-9]*[.][0-9][0-9]*[.][0-9]/{s/^[0-9]*[.][0-9]*[.]\([0-9]*\).*/\1/p;q;}
+i\
+0
+q
+'
+
+
+  if test "$HAVE_LIBUNISTRING" = yes; then
+    LIBUNISTRING_VERSION_MAJOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_major"`
+    LIBUNISTRING_VERSION_MINOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_minor"`
+    LIBUNISTRING_VERSION_SUBMINOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_subminor"`
+  fi
+
+ac_fn_check_decl "$LINENO" "clearerr_unlocked" "ac_cv_have_decl_clearerr_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_clearerr_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_CLEARERR_UNLOCKED $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "feof_unlocked" "ac_cv_have_decl_feof_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_feof_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_FEOF_UNLOCKED $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "ferror_unlocked" "ac_cv_have_decl_ferror_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_ferror_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_FERROR_UNLOCKED $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "fflush_unlocked" "ac_cv_have_decl_fflush_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_fflush_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_FFLUSH_UNLOCKED $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "fgets_unlocked" "ac_cv_have_decl_fgets_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_fgets_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_FGETS_UNLOCKED $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "fputc_unlocked" "ac_cv_have_decl_fputc_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_fputc_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_FPUTC_UNLOCKED $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "fputs_unlocked" "ac_cv_have_decl_fputs_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_fputs_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_FPUTS_UNLOCKED $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "fread_unlocked" "ac_cv_have_decl_fread_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_fread_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_FREAD_UNLOCKED $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "fwrite_unlocked" "ac_cv_have_decl_fwrite_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_fwrite_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_FWRITE_UNLOCKED $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "getc_unlocked" "ac_cv_have_decl_getc_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_getc_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_GETC_UNLOCKED $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "getchar_unlocked" "ac_cv_have_decl_getchar_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_getchar_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_GETCHAR_UNLOCKED $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "putc_unlocked" "ac_cv_have_decl_putc_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_putc_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_PUTC_UNLOCKED $ac_have_decl" >>confdefs.h
+
+ac_fn_check_decl "$LINENO" "putchar_unlocked" "ac_cv_have_decl_putchar_unlocked" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_putchar_unlocked" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_PUTCHAR_UNLOCKED $ac_have_decl" >>confdefs.h
+
+
+
+
+  if test $ac_cv_header_features_h = yes; then
+    HAVE_FEATURES_H=1
+  else
+    HAVE_FEATURES_H=0
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_wchar_h='<'wchar.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <wchar.h>" >&5
+printf %s "checking absolute name of <wchar.h>... " >&6; }
+if test ${gl_cv_next_wchar_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_wchar_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <wchar.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'wchar.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_wchar_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_wchar_h
+           gl_cv_next_wchar_h='"'$gl_header'"'
+          else
+               gl_cv_next_wchar_h='<'wchar.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_wchar_h" >&5
+printf "%s\n" "$gl_cv_next_wchar_h" >&6; }
+     fi
+     NEXT_WCHAR_H=$gl_cv_next_wchar_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'wchar.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_wchar_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_WCHAR_H=$gl_next_as_first_directive
+
+
+
+
+  if test $ac_cv_header_wchar_h = yes; then
+    HAVE_WCHAR_H=1
+  else
+    HAVE_WCHAR_H=0
+  fi
+
+
+
+
+
+  if test $gt_cv_c_wint_t = yes; then
+    HAVE_WINT_T=1
+  else
+    HAVE_WINT_T=0
+  fi
+
+
+
+
+
+
+
+
+
+
+  ac_fn_check_decl "$LINENO" "wcsdup" "ac_cv_have_decl_wcsdup" "
+      #include <wchar.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_wcsdup" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_WCSDUP $ac_have_decl" >>confdefs.h
+
+  if test $ac_cv_have_decl_wcsdup = no; then
+    HAVE_DECL_WCSDUP=0
+  fi
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler option to allow warnings" >&5
+printf %s "checking for C compiler option to allow warnings... " >&6; }
+if test ${gl_cv_cc_wallow+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  rm -f conftest*
+     echo 'int dummy;' > conftest.c
+     { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c 2>conftest1.err'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; } >/dev/null
+     { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Wno-error -c conftest.c 2>conftest2.err'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; } >/dev/null
+                         if test $? = 0 && test `wc -l < conftest1.err` = `wc -l < conftest2.err`; then
+       gl_cv_cc_wallow='-Wno-error'
+     else
+       gl_cv_cc_wallow=none
+     fi
+     rm -f conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_wallow" >&5
+printf "%s\n" "$gl_cv_cc_wallow" >&6; }
+  case "$gl_cv_cc_wallow" in
+    none) GL_CFLAG_ALLOW_WARNINGS='' ;;
+    *)    GL_CFLAG_ALLOW_WARNINGS="$gl_cv_cc_wallow" ;;
+  esac
+
+
+
+    if test -n "$CXX" && test "$CXX" != no; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C++ compiler option to allow warnings" >&5
+printf %s "checking for C++ compiler option to allow warnings... " >&6; }
+if test ${gl_cv_cxx_wallow+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  rm -f conftest*
+       echo 'int dummy;' > conftest.cc
+       { ac_try='${CXX-c++} $CXXFLAGS $CPPFLAGS -c conftest.cc 2>conftest1.err'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; } >/dev/null
+       { ac_try='${CXX-c++} $CXXFLAGS $CPPFLAGS -Wno-error -c conftest.cc 2>conftest2.err'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; } >/dev/null
+                                   if test $? = 0 && test `wc -l < conftest1.err` = `wc -l < conftest2.err`; then
+         gl_cv_cxx_wallow='-Wno-error'
+       else
+         gl_cv_cxx_wallow=none
+       fi
+       rm -f conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cxx_wallow" >&5
+printf "%s\n" "$gl_cv_cxx_wallow" >&6; }
+    case "$gl_cv_cxx_wallow" in
+      none) GL_CXXFLAG_ALLOW_WARNINGS='' ;;
+      *)    GL_CXXFLAG_ALLOW_WARNINGS="$gl_cv_cxx_wallow" ;;
+    esac
+  else
+    GL_CXXFLAG_ALLOW_WARNINGS=''
+  fi
+
+
+
+  HAVE_STRUCT_SOCKADDR_STORAGE=1;
+  HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=1;
+
+  HAVE_SA_FAMILY_T=1;
+  HAVE_ACCEPT4=1;
+
+
+   if test $ac_cv_header_sys_socket_h = no; then
+                         ac_fn_c_check_header_compile "$LINENO" "ws2tcpip.h" "ac_cv_header_ws2tcpip_h" "$ac_includes_default"
+if test "x$ac_cv_header_ws2tcpip_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_WS2TCPIP_H 1" >>confdefs.h
+
+fi
+
+   fi
+
+
+
+
+
+        case "$host_os" in
+    osf*)
+
+printf "%s\n" "#define _POSIX_PII_SOCKET 1" >>confdefs.h
+
+      ;;
+  esac
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether <sys/socket.h> is self-contained" >&5
+printf %s "checking whether <sys/socket.h> is self-contained... " >&6; }
+if test ${gl_cv_header_sys_socket_h_selfcontained+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/socket.h>
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_sys_socket_h_selfcontained=yes
+else $as_nop
+  gl_cv_header_sys_socket_h_selfcontained=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_sys_socket_h_selfcontained" >&5
+printf "%s\n" "$gl_cv_header_sys_socket_h_selfcontained" >&6; }
+  if test $gl_cv_header_sys_socket_h_selfcontained = yes; then
+            ac_fn_c_check_func "$LINENO" "shutdown" "ac_cv_func_shutdown"
+if test "x$ac_cv_func_shutdown" = xyes
+then :
+  printf "%s\n" "#define HAVE_SHUTDOWN 1" >>confdefs.h
+
+fi
+
+    if test $ac_cv_func_shutdown = yes; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether <sys/socket.h> defines the SHUT_* macros" >&5
+printf %s "checking whether <sys/socket.h> defines the SHUT_* macros... " >&6; }
+if test ${gl_cv_header_sys_socket_h_shut+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/socket.h>
+int
+main (void)
+{
+int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_sys_socket_h_shut=yes
+else $as_nop
+  gl_cv_header_sys_socket_h_shut=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_sys_socket_h_shut" >&5
+printf "%s\n" "$gl_cv_header_sys_socket_h_shut" >&6; }
+      if test $gl_cv_header_sys_socket_h_shut = no; then
+        SYS_SOCKET_H='sys/socket.h'
+      fi
+    fi
+  fi
+  # We need to check for ws2tcpip.h now.
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_sys_socket_h='<'sys/socket.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <sys/socket.h>" >&5
+printf %s "checking absolute name of <sys/socket.h>... " >&6; }
+if test ${gl_cv_next_sys_socket_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_sys_socket_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/socket.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'sys/socket.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_sys_socket_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_sys_socket_h
+           gl_cv_next_sys_socket_h='"'$gl_header'"'
+          else
+               gl_cv_next_sys_socket_h='<'sys/socket.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_sys_socket_h" >&5
+printf "%s\n" "$gl_cv_next_sys_socket_h" >&6; }
+     fi
+     NEXT_SYS_SOCKET_H=$gl_cv_next_sys_socket_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'sys/socket.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_sys_socket_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H=$gl_next_as_first_directive
+
+
+
+
+  if test $ac_cv_header_sys_socket_h = yes; then
+    HAVE_SYS_SOCKET_H=1
+  else
+    HAVE_SYS_SOCKET_H=0
+  fi
+
+
+
+  if test $ac_cv_header_sys_socket_h = yes; then
+    HAVE_WS2TCPIP_H=0
+  else
+    if test $ac_cv_header_ws2tcpip_h = yes; then
+      HAVE_WS2TCPIP_H=1
+    else
+      HAVE_WS2TCPIP_H=0
+    fi
+  fi
+
+
+
+  ac_fn_c_check_type "$LINENO" "struct sockaddr_storage" "ac_cv_type_struct_sockaddr_storage" "
+  /* sys/types.h is not needed according to POSIX, but the
+     sys/socket.h in i386-unknown-freebsd4.10 and
+     powerpc-apple-darwin5.5 required it. */
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+
+"
+if test "x$ac_cv_type_struct_sockaddr_storage" = xyes
+then :
+
+printf "%s\n" "#define HAVE_STRUCT_SOCKADDR_STORAGE 1" >>confdefs.h
+
+
+fi
+ac_fn_c_check_type "$LINENO" "sa_family_t" "ac_cv_type_sa_family_t" "
+  /* sys/types.h is not needed according to POSIX, but the
+     sys/socket.h in i386-unknown-freebsd4.10 and
+     powerpc-apple-darwin5.5 required it. */
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+
+"
+if test "x$ac_cv_type_sa_family_t" = xyes
+then :
+
+printf "%s\n" "#define HAVE_SA_FAMILY_T 1" >>confdefs.h
+
+
+fi
+
+  if test $ac_cv_type_struct_sockaddr_storage = no; then
+    HAVE_STRUCT_SOCKADDR_STORAGE=0
+  fi
+  if test $ac_cv_type_sa_family_t = no; then
+    HAVE_SA_FAMILY_T=0
+  fi
+  if test $ac_cv_type_struct_sockaddr_storage != no; then
+    ac_fn_c_check_member "$LINENO" "struct sockaddr_storage" "ss_family" "ac_cv_member_struct_sockaddr_storage_ss_family" "#include <sys/types.h>
+       #ifdef HAVE_SYS_SOCKET_H
+       #include <sys/socket.h>
+       #endif
+       #ifdef HAVE_WS2TCPIP_H
+       #include <ws2tcpip.h>
+       #endif
+
+"
+if test "x$ac_cv_member_struct_sockaddr_storage_ss_family" = xyes
+then :
+
+printf "%s\n" "#define HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY 1" >>confdefs.h
+
+
+else $as_nop
+  HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=0
+fi
+
+  fi
+  if test $HAVE_STRUCT_SOCKADDR_STORAGE = 0 || test $HAVE_SA_FAMILY_T = 0 \
+     || test $HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = 0; then
+    SYS_SOCKET_H='sys/socket.h'
+  fi
+
+
+
+
+  if test $ac_cv_header_sys_socket_h != yes; then
+                    ac_fn_c_check_header_compile "$LINENO" "winsock2.h" "ac_cv_header_winsock2_h" "$ac_includes_default"
+if test "x$ac_cv_header_winsock2_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_WINSOCK2_H 1" >>confdefs.h
+
+fi
+
+  fi
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    HAVE_WINSOCK2_H=1
+    UNISTD_H_HAVE_WINSOCK2_H=1
+    SYS_IOCTL_H_HAVE_WINSOCK2_H=1
+  else
+    HAVE_WINSOCK2_H=0
+  fi
+
+
+
+
+
+
+
+
+
+
+
+  GL_GNULIB_SOCKET=0
+
+
+
+  GL_GNULIB_CONNECT=0
+
+
+
+  GL_GNULIB_ACCEPT=0
+
+
+
+  GL_GNULIB_BIND=0
+
+
+
+  GL_GNULIB_GETPEERNAME=0
+
+
+
+  GL_GNULIB_GETSOCKNAME=0
+
+
+
+  GL_GNULIB_GETSOCKOPT=0
+
+
+
+  GL_GNULIB_LISTEN=0
+
+
+
+  GL_GNULIB_RECV=0
+
+
+
+  GL_GNULIB_SEND=0
+
+
+
+  GL_GNULIB_RECVFROM=0
+
+
+
+  GL_GNULIB_SENDTO=0
+
+
+
+  GL_GNULIB_SETSOCKOPT=0
+
+
+
+  GL_GNULIB_SHUTDOWN=0
+
+
+
+  GL_GNULIB_ACCEPT4=0
+
+
+
+
+    HAVE_DECL_INET_NTOP=1;
+  HAVE_DECL_INET_PTON=1;
+  REPLACE_INET_NTOP=0;
+  REPLACE_INET_PTON=0;
+
+
+
+
+
+
+  if test $ac_cv_header_arpa_inet_h = yes; then
+    HAVE_ARPA_INET_H=1
+  else
+    HAVE_ARPA_INET_H=0
+  fi
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_arpa_inet_h='<'arpa/inet.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <arpa/inet.h>" >&5
+printf %s "checking absolute name of <arpa/inet.h>... " >&6; }
+if test ${gl_cv_next_arpa_inet_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_arpa_inet_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <arpa/inet.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'arpa/inet.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_arpa_inet_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_arpa_inet_h
+           gl_cv_next_arpa_inet_h='"'$gl_header'"'
+          else
+               gl_cv_next_arpa_inet_h='<'arpa/inet.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_arpa_inet_h" >&5
+printf "%s\n" "$gl_cv_next_arpa_inet_h" >&6; }
+     fi
+     NEXT_ARPA_INET_H=$gl_cv_next_arpa_inet_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'arpa/inet.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_arpa_inet_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+
+
+  if test $ac_cv_header_sys_socket_h = yes; then
+    HAVE_WS2TCPIP_H=0
+  else
+    if test $ac_cv_header_ws2tcpip_h = yes; then
+      HAVE_WS2TCPIP_H=1
+    else
+      HAVE_WS2TCPIP_H=0
+    fi
+  fi
+
+
+
+
+
+
+
+
+
+  GL_GNULIB_INET_NTOP=0
+
+
+
+  GL_GNULIB_INET_PTON=0
+
+
+
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if environ is properly declared" >&5
+printf %s "checking if environ is properly declared... " >&6; }
+if test ${gt_cv_var_environ_declaration+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if HAVE_UNISTD_H
+     #include <unistd.h>
+     #endif
+     /* mingw, BeOS, Haiku declare environ in <stdlib.h>, not in <unistd.h>.  */
+     #include <stdlib.h>
+
+            typedef struct { int foo; } foo_t;
+            extern foo_t environ;
+int
+main (void)
+{
+environ.foo = 1;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gt_cv_var_environ_declaration=no
+else $as_nop
+  gt_cv_var_environ_declaration=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_var_environ_declaration" >&5
+printf "%s\n" "$gt_cv_var_environ_declaration" >&6; }
+  if test $gt_cv_var_environ_declaration = yes; then
+
+printf "%s\n" "#define HAVE_ENVIRON_DECL 1" >>confdefs.h
+
+  fi
+
+
+  if test $gt_cv_var_environ_declaration != yes; then
+    HAVE_DECL_ENVIRON=0
+  fi
+
+
+
+    HAVE_GETTIMEOFDAY=1;
+  HAVE_STRUCT_TIMEVAL=1;
+  HAVE_SYS_TIME_H=1;
+  REPLACE_GETTIMEOFDAY=0;
+  REPLACE_STRUCT_TIMEVAL=0;
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_sys_time_h='<'sys/time.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <sys/time.h>" >&5
+printf %s "checking absolute name of <sys/time.h>... " >&6; }
+if test ${gl_cv_next_sys_time_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_sys_time_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/time.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'sys/time.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_sys_time_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_sys_time_h
+           gl_cv_next_sys_time_h='"'$gl_header'"'
+          else
+               gl_cv_next_sys_time_h='<'sys/time.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_sys_time_h" >&5
+printf "%s\n" "$gl_cv_next_sys_time_h" >&6; }
+     fi
+     NEXT_SYS_TIME_H=$gl_cv_next_sys_time_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'sys/time.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_sys_time_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H=$gl_next_as_first_directive
+
+
+
+
+
+  if test $ac_cv_header_sys_time_h != yes; then
+    HAVE_SYS_TIME_H=0
+  fi
+
+
+
+
+
+  if test $ac_cv_header_sys_socket_h != yes; then
+                    ac_fn_c_check_header_compile "$LINENO" "winsock2.h" "ac_cv_header_winsock2_h" "$ac_includes_default"
+if test "x$ac_cv_header_winsock2_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_WINSOCK2_H 1" >>confdefs.h
+
+fi
+
+  fi
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    HAVE_WINSOCK2_H=1
+    UNISTD_H_HAVE_WINSOCK2_H=1
+    SYS_IOCTL_H_HAVE_WINSOCK2_H=1
+  else
+    HAVE_WINSOCK2_H=0
+  fi
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for struct timeval" >&5
+printf %s "checking for struct timeval... " >&6; }
+if test ${gl_cv_sys_struct_timeval+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if HAVE_SYS_TIME_H
+             #include <sys/time.h>
+            #endif
+            #include <time.h>
+            #if HAVE_WINSOCK2_H
+            # include <winsock2.h>
+            #endif
+
+int
+main (void)
+{
+static struct timeval x; x.tv_sec = x.tv_usec;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_sys_struct_timeval=yes
+else $as_nop
+  gl_cv_sys_struct_timeval=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_sys_struct_timeval" >&5
+printf "%s\n" "$gl_cv_sys_struct_timeval" >&6; }
+  if test $gl_cv_sys_struct_timeval != yes; then
+    HAVE_STRUCT_TIMEVAL=0
+  else
+                            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for wide-enough struct timeval.tv_sec member" >&5
+printf %s "checking for wide-enough struct timeval.tv_sec member... " >&6; }
+if test ${gl_cv_sys_struct_timeval_tv_sec+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if HAVE_SYS_TIME_H
+               #include <sys/time.h>
+              #endif
+              #include <time.h>
+              #if HAVE_WINSOCK2_H
+              # include <winsock2.h>
+              #endif
+
+int
+main (void)
+{
+static struct timeval x;
+              typedef int verify_tv_sec_type[
+                sizeof (time_t) <= sizeof x.tv_sec ? 1 : -1
+              ];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_sys_struct_timeval_tv_sec=yes
+else $as_nop
+  gl_cv_sys_struct_timeval_tv_sec=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_sys_struct_timeval_tv_sec" >&5
+printf "%s\n" "$gl_cv_sys_struct_timeval_tv_sec" >&6; }
+    if test $gl_cv_sys_struct_timeval_tv_sec != yes; then
+      REPLACE_STRUCT_TIMEVAL=1
+    fi
+  fi
+
+
+
+
+
+
+
+
+  GL_GNULIB_GETTIMEOFDAY=0
+
+
+
+
+
+  case "$host_os" in
+    *-musl*)
+printf "%s\n" "#define MUSL_LIBC 1" >>confdefs.h
+ ;;
+  esac
+
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for IPv4 sockets" >&5
+printf %s "checking for IPv4 sockets... " >&6; }
+if test ${gl_cv_socket_ipv4+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif
+int
+main (void)
+{
+int x = AF_INET; struct in_addr y; struct sockaddr_in z;
+ if (&x && &y && &z) return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_socket_ipv4=yes
+else $as_nop
+  gl_cv_socket_ipv4=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_socket_ipv4" >&5
+printf "%s\n" "$gl_cv_socket_ipv4" >&6; }
+  if test $gl_cv_socket_ipv4 = yes; then
+
+printf "%s\n" "#define HAVE_IPV4 1" >>confdefs.h
+
+  fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for IPv6 sockets" >&5
+printf %s "checking for IPv6 sockets... " >&6; }
+if test ${gl_cv_socket_ipv6+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+int
+main (void)
+{
+int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z;
+ if (&x && &y && &z) return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_socket_ipv6=yes
+else $as_nop
+  gl_cv_socket_ipv6=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_socket_ipv6" >&5
+printf "%s\n" "$gl_cv_socket_ipv6" >&6; }
+  if test $gl_cv_socket_ipv6 = yes; then
+
+printf "%s\n" "#define HAVE_IPV6 1" >>confdefs.h
+
+  fi
+
+ac_fn_c_check_type "$LINENO" "off_t" "ac_cv_type_off_t" "$ac_includes_default"
+if test "x$ac_cv_type_off_t" = xyes
+then :
+
+else $as_nop
+
+printf "%s\n" "#define off_t long int" >>confdefs.h
+
+fi
+
+
+
+  GL_GNULIB_IOCTL=0
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for LC_MESSAGES" >&5
+printf %s "checking for LC_MESSAGES... " >&6; }
+if test ${gt_cv_val_LC_MESSAGES+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <locale.h>
+int
+main (void)
+{
+return LC_MESSAGES
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gt_cv_val_LC_MESSAGES=yes
+else $as_nop
+  gt_cv_val_LC_MESSAGES=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_val_LC_MESSAGES" >&5
+printf "%s\n" "$gt_cv_val_LC_MESSAGES" >&6; }
+  if test $gt_cv_val_LC_MESSAGES = yes; then
+
+printf "%s\n" "#define HAVE_LC_MESSAGES 1" >>confdefs.h
+
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+          if test $ac_cv_func_uselocale = yes; then
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether uselocale works" >&5
+printf %s "checking whether uselocale works... " >&6; }
+if test ${gt_cv_func_uselocale_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  # Guess no on AIX and z/OS, yes otherwise.
+          case "$host_os" in
+            aix* | openedition*) gt_cv_func_uselocale_works="guessing no" ;;
+            *)                   gt_cv_func_uselocale_works="guessing yes" ;;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#if HAVE_XLOCALE_H
+# include <xlocale.h>
+#endif
+locale_t loc1;
+int main ()
+{
+  uselocale (NULL);
+  setlocale (LC_ALL, "en_US.UTF-8");
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gt_cv_func_uselocale_works=yes
+else $as_nop
+  gt_cv_func_uselocale_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_func_uselocale_works" >&5
+printf "%s\n" "$gt_cv_func_uselocale_works" >&6; }
+  else
+    gt_cv_func_uselocale_works=no
+  fi
+  case "$gt_cv_func_uselocale_works" in
+    *yes)
+      gt_working_uselocale=yes
+
+printf "%s\n" "#define HAVE_WORKING_USELOCALE 1" >>confdefs.h
+
+      ;;
+    *)
+      gt_working_uselocale=no
+      ;;
+  esac
+
+
+                            case "$gt_cv_func_uselocale_works" in
+    *yes)
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fake locale system (OpenBSD)" >&5
+printf %s "checking for fake locale system (OpenBSD)... " >&6; }
+if test ${gt_cv_locale_fake+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+              case "$host_os" in
+              openbsd*) gt_cv_locale_fake="guessing yes" ;;
+              *)        gt_cv_locale_fake="guessing no" ;;
+            esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#if HAVE_XLOCALE_H
+# include <xlocale.h>
+#endif
+int main ()
+{
+  locale_t loc1, loc2;
+  if (setlocale (LC_ALL, "de_DE.UTF-8") == NULL) return 1;
+  if (setlocale (LC_ALL, "fr_FR.UTF-8") == NULL) return 1;
+  loc1 = newlocale (LC_ALL_MASK, "de_DE.UTF-8", (locale_t)0);
+  loc2 = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", (locale_t)0);
+  return !(loc1 == loc2);
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gt_cv_locale_fake=yes
+else $as_nop
+  gt_cv_locale_fake=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fake" >&5
+printf "%s\n" "$gt_cv_locale_fake" >&6; }
+      ;;
+    *) gt_cv_locale_fake=no ;;
+  esac
+  case "$gt_cv_locale_fake" in
+    *yes)
+      gt_fake_locales=yes
+
+printf "%s\n" "#define HAVE_FAKE_LOCALES 1" >>confdefs.h
+
+      ;;
+    *)
+      gt_fake_locales=no
+      ;;
+  esac
+
+  case "$gt_cv_func_uselocale_works" in
+    *yes)
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for Solaris 11.4 locale system" >&5
+printf %s "checking for Solaris 11.4 locale system... " >&6; }
+if test ${gt_cv_locale_solaris114+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case "$host_os" in
+           solaris*)
+                                                                                           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+                  #include <locale.h>
+                  struct _LC_locale_t *x;
+                  locale_t y;
+
+int
+main (void)
+{
+*y = x;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gt_cv_locale_solaris114=yes
+else $as_nop
+  gt_cv_locale_solaris114=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+             ;;
+           *) gt_cv_locale_solaris114=no ;;
+         esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_solaris114" >&5
+printf "%s\n" "$gt_cv_locale_solaris114" >&6; }
+      ;;
+    *) gt_cv_locale_solaris114=no ;;
+  esac
+  if test $gt_cv_locale_solaris114 = yes; then
+
+printf "%s\n" "#define HAVE_SOLARIS114_LOCALES 1" >>confdefs.h
+
+  fi
+
+        case "$gt_cv_func_uselocale_works" in
+    *yes)
+      ac_fn_c_check_func "$LINENO" "getlocalename_l" "ac_cv_func_getlocalename_l"
+if test "x$ac_cv_func_getlocalename_l" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETLOCALENAME_L 1" >>confdefs.h
+
+fi
+
+      ;;
+  esac
+
+            gt_nameless_locales=no
+  case "$host_os" in
+        aix*)
+      gt_nameless_locales=yes
+
+printf "%s\n" "#define HAVE_NAMELESS_LOCALES 1" >>confdefs.h
+
+      ;;
+  esac
+
+        if test $gt_working_uselocale = yes && test $gt_fake_locales = no; then
+    gt_good_uselocale=yes
+
+printf "%s\n" "#define HAVE_GOOD_USELOCALE 1" >>confdefs.h
+
+  else
+    gt_good_uselocale=no
+  fi
+
+        if test $gt_good_uselocale = yes && test $gt_nameless_locales = yes; then
+    gt_localename_enhances_locale_funcs=yes
+    LOCALENAME_ENHANCE_LOCALE_FUNCS=1
+
+printf "%s\n" "#define LOCALENAME_ENHANCE_LOCALE_FUNCS 1" >>confdefs.h
+
+  else
+    gt_localename_enhances_locale_funcs=no
+  fi
+
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for CFPreferencesCopyAppValue" >&5
+printf %s "checking for CFPreferencesCopyAppValue... " >&6; }
+if test ${gt_cv_func_CFPreferencesCopyAppValue+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gt_save_LIBS="$LIBS"
+     LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <CoreFoundation/CFPreferences.h>
+int
+main (void)
+{
+CFPreferencesCopyAppValue(NULL, NULL)
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gt_cv_func_CFPreferencesCopyAppValue=yes
+else $as_nop
+  gt_cv_func_CFPreferencesCopyAppValue=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+     LIBS="$gt_save_LIBS"
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_func_CFPreferencesCopyAppValue" >&5
+printf "%s\n" "$gt_cv_func_CFPreferencesCopyAppValue" >&6; }
+  if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then
+
+printf "%s\n" "#define HAVE_CFPREFERENCESCOPYAPPVALUE 1" >>confdefs.h
+
+  fi
+                    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for CFLocaleCopyPreferredLanguages" >&5
+printf %s "checking for CFLocaleCopyPreferredLanguages... " >&6; }
+if test ${gt_cv_func_CFLocaleCopyPreferredLanguages+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gt_save_LIBS="$LIBS"
+     LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <CoreFoundation/CFLocale.h>
+int
+main (void)
+{
+CFLocaleCopyPreferredLanguages();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gt_cv_func_CFLocaleCopyPreferredLanguages=yes
+else $as_nop
+  gt_cv_func_CFLocaleCopyPreferredLanguages=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+     LIBS="$gt_save_LIBS"
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_func_CFLocaleCopyPreferredLanguages" >&5
+printf "%s\n" "$gt_cv_func_CFLocaleCopyPreferredLanguages" >&6; }
+  if test $gt_cv_func_CFLocaleCopyPreferredLanguages = yes; then
+
+printf "%s\n" "#define HAVE_CFLOCALECOPYPREFERREDLANGUAGES 1" >>confdefs.h
+
+  fi
+  INTL_MACOSX_LIBS=
+  if test $gt_cv_func_CFPreferencesCopyAppValue = yes \
+     || test $gt_cv_func_CFLocaleCopyPreferredLanguages = yes; then
+    INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation"
+  fi
+
+
+
+
+    HAVE_PSELECT=1;
+  REPLACE_PSELECT=0;
+  REPLACE_SELECT=0;
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether <sys/select.h> is self-contained" >&5
+printf %s "checking whether <sys/select.h> is self-contained... " >&6; }
+if test ${gl_cv_header_sys_select_h_selfcontained+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                                    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/select.h>
+int
+main (void)
+{
+struct timeval b;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_sys_select_h_selfcontained=yes
+else $as_nop
+  gl_cv_header_sys_select_h_selfcontained=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+                        if test $gl_cv_header_sys_select_h_selfcontained = yes; then
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/select.h>
+int
+main (void)
+{
+int memset; int bzero;
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/select.h>
+int
+main (void)
+{
+
+                  #undef memset
+                  #define memset nonexistent_memset
+                  extern
+                  #ifdef __cplusplus
+                  "C"
+                  #endif
+                  void *memset (void *, int, unsigned long);
+                  #undef bzero
+                  #define bzero nonexistent_bzero
+                  extern
+                  #ifdef __cplusplus
+                  "C"
+                  #endif
+                  void bzero (void *, unsigned long);
+                  fd_set fds;
+                  FD_ZERO (&fds);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+
+else $as_nop
+  gl_cv_header_sys_select_h_selfcontained=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_sys_select_h_selfcontained" >&5
+printf "%s\n" "$gl_cv_header_sys_select_h_selfcontained" >&6; }
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_sys_select_h='<'sys/select.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <sys/select.h>" >&5
+printf %s "checking absolute name of <sys/select.h>... " >&6; }
+if test ${gl_cv_next_sys_select_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_sys_select_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/select.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'sys/select.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_sys_select_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_sys_select_h
+           gl_cv_next_sys_select_h='"'$gl_header'"'
+          else
+               gl_cv_next_sys_select_h='<'sys/select.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_sys_select_h" >&5
+printf "%s\n" "$gl_cv_next_sys_select_h" >&6; }
+     fi
+     NEXT_SYS_SELECT_H=$gl_cv_next_sys_select_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'sys/select.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_sys_select_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H=$gl_next_as_first_directive
+
+
+
+
+  if test $ac_cv_header_sys_select_h = yes; then
+    HAVE_SYS_SELECT_H=1
+  else
+    HAVE_SYS_SELECT_H=0
+  fi
+
+
+
+
+
+  if test $ac_cv_header_sys_socket_h != yes; then
+                    ac_fn_c_check_header_compile "$LINENO" "winsock2.h" "ac_cv_header_winsock2_h" "$ac_includes_default"
+if test "x$ac_cv_header_winsock2_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_WINSOCK2_H 1" >>confdefs.h
+
+fi
+
+  fi
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    HAVE_WINSOCK2_H=1
+    UNISTD_H_HAVE_WINSOCK2_H=1
+    SYS_IOCTL_H_HAVE_WINSOCK2_H=1
+  else
+    HAVE_WINSOCK2_H=0
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+  if test $ac_cv_header_sys_socket_h != yes; then
+                    ac_fn_c_check_header_compile "$LINENO" "winsock2.h" "ac_cv_header_winsock2_h" "$ac_includes_default"
+if test "x$ac_cv_header_winsock2_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_WINSOCK2_H 1" >>confdefs.h
+
+fi
+
+  fi
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    HAVE_WINSOCK2_H=1
+    UNISTD_H_HAVE_WINSOCK2_H=1
+    SYS_IOCTL_H_HAVE_WINSOCK2_H=1
+  else
+    HAVE_WINSOCK2_H=0
+  fi
+
+   LIBSOCKET=
+  if test $HAVE_WINSOCK2_H = 1; then
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for WSAStartup" >&5
+printf %s "checking for WSAStartup... " >&6; }
+if test ${gl_cv_func_wsastartup+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+       gl_save_LIBS="$LIBS"
+       LIBS="$LIBS -lws2_32"
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#ifdef HAVE_WINSOCK2_H
+# include <winsock2.h>
+#endif
+int
+main (void)
+{
+
+            WORD wVersionRequested = MAKEWORD(1, 1);
+            WSADATA wsaData;
+            int err = WSAStartup(wVersionRequested, &wsaData);
+            WSACleanup ();
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_func_wsastartup=yes
+else $as_nop
+  gl_cv_func_wsastartup=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+       LIBS="$gl_save_LIBS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_wsastartup" >&5
+printf "%s\n" "$gl_cv_func_wsastartup" >&6; }
+    if test "$gl_cv_func_wsastartup" = "yes"; then
+
+printf "%s\n" "#define WINDOWS_SOCKETS 1" >>confdefs.h
+
+      LIBSOCKET='-lws2_32'
+    fi
+  else
+                                    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing setsockopt" >&5
+printf %s "checking for library containing setsockopt... " >&6; }
+if test ${gl_cv_lib_socket+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      gl_cv_lib_socket=
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern
+#ifdef __cplusplus
+"C"
+#endif
+char setsockopt();
+int
+main (void)
+{
+setsockopt();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+
+else $as_nop
+  gl_save_LIBS="$LIBS"
+         LIBS="$gl_save_LIBS -lsocket"
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern
+#ifdef __cplusplus
+"C"
+#endif
+char setsockopt();
+int
+main (void)
+{
+setsockopt();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_lib_socket="-lsocket"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+         if test -z "$gl_cv_lib_socket"; then
+           LIBS="$gl_save_LIBS -lnetwork"
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern
+#ifdef __cplusplus
+"C"
+#endif
+char setsockopt();
+int
+main (void)
+{
+setsockopt();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_lib_socket="-lnetwork"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+           if test -z "$gl_cv_lib_socket"; then
+             LIBS="$gl_save_LIBS -lnet"
+             cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern
+#ifdef __cplusplus
+"C"
+#endif
+char setsockopt();
+int
+main (void)
+{
+setsockopt();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_lib_socket="-lnet"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+           fi
+         fi
+         LIBS="$gl_save_LIBS"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+      if test -z "$gl_cv_lib_socket"; then
+        gl_cv_lib_socket="none needed"
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_lib_socket" >&5
+printf "%s\n" "$gl_cv_lib_socket" >&6; }
+    if test "$gl_cv_lib_socket" != "none needed"; then
+      LIBSOCKET="$gl_cv_lib_socket"
+    fi
+  fi
+
+
+
+
+
+
+  :
+
+
+
+
+
+
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    REPLACE_SELECT=1
+  else
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether select supports a 0 argument" >&5
+printf %s "checking whether select supports a 0 argument... " >&6; }
+if test ${gl_cv_func_select_supports0+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+        if test "$cross_compiling" = yes
+then :
+
+           case "$host_os" in
+                       # Guess no on Interix.
+             interix*) gl_cv_func_select_supports0="guessing no";;
+                       # Guess yes otherwise.
+             *)        gl_cv_func_select_supports0="guessing yes";;
+           esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#if HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+int main ()
+{
+  struct timeval timeout;
+  timeout.tv_sec = 0;
+  timeout.tv_usec = 5;
+  return select (0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &timeout) < 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_select_supports0=yes
+else $as_nop
+  gl_cv_func_select_supports0=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_select_supports0" >&5
+printf "%s\n" "$gl_cv_func_select_supports0" >&6; }
+    case "$gl_cv_func_select_supports0" in
+      *yes) ;;
+      *) REPLACE_SELECT=1 ;;
+    esac
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether select detects invalid fds" >&5
+printf %s "checking whether select detects invalid fds... " >&6; }
+if test ${gl_cv_func_select_detects_ebadf+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+        if test "$cross_compiling" = yes
+then :
+
+           case "$host_os" in
+                             # Guess yes on Linux systems.
+            linux-* | linux) gl_cv_func_select_detects_ebadf="guessing yes" ;;
+                             # Guess yes on glibc systems.
+            *-gnu* | gnu*)   gl_cv_func_select_detects_ebadf="guessing yes" ;;
+                             # If we don't know, obey --enable-cross-guesses.
+            *)               gl_cv_func_select_detects_ebadf="$gl_cross_guess_normal" ;;
+           esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#if HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
+#include <unistd.h>
+#include <errno.h>
+
+
+$gl_mda_defines
+
+int
+main (void)
+{
+
+  fd_set set;
+  dup2(0, 16);
+  FD_ZERO(&set);
+  FD_SET(16, &set);
+  close(16);
+  struct timeval timeout;
+  timeout.tv_sec = 0;
+  timeout.tv_usec = 5;
+  return select (17, &set, NULL, NULL, &timeout) != -1 || errno != EBADF;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_select_detects_ebadf=yes
+else $as_nop
+  gl_cv_func_select_detects_ebadf=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_select_detects_ebadf" >&5
+printf "%s\n" "$gl_cv_func_select_detects_ebadf" >&6; }
+    case $gl_cv_func_select_detects_ebadf in
+      *yes) ;;
+      *) REPLACE_SELECT=1 ;;
+    esac
+  fi
+
+    LIB_SELECT="$LIBSOCKET"
+  if test $REPLACE_SELECT = 1; then
+    case "$host_os" in
+      mingw*)
+                                cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+int
+main ()
+{
+  MsgWaitForMultipleObjects (0, NULL, 0, 0, 0);
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+
+else $as_nop
+  LIB_SELECT="$LIB_SELECT -luser32"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+        ;;
+    esac
+  fi
+
+
+
+
+
+
+
+
+
+  if test $ac_cv_have_decl_strerror_r = no; then
+    HAVE_DECL_STRERROR_R=0
+  fi
+
+  if test $ac_cv_func_strerror_r = yes; then
+    if test "$ERRNO_H:$REPLACE_STRERROR_0" = :0; then
+      if test $gl_cv_func_strerror_r_posix_signature = yes; then
+        case "$gl_cv_func_strerror_r_works" in
+                    *no) REPLACE_STRERROR_R=1 ;;
+        esac
+      else
+                REPLACE_STRERROR_R=1
+      fi
+    else
+                  REPLACE_STRERROR_R=1
+    fi
+  fi
+
+
+    HAVE_PTHREAD_T=1;
+  HAVE_PTHREAD_SPINLOCK_T=1;
+  HAVE_PTHREAD_CREATE_DETACHED=1;
+  HAVE_PTHREAD_MUTEX_RECURSIVE=1;
+  HAVE_PTHREAD_MUTEX_ROBUST=1;
+  HAVE_PTHREAD_PROCESS_SHARED=1;
+  HAVE_PTHREAD_CREATE=1;
+  HAVE_PTHREAD_ATTR_INIT=1;
+  HAVE_PTHREAD_ATTR_GETDETACHSTATE=1;
+  HAVE_PTHREAD_ATTR_SETDETACHSTATE=1;
+  HAVE_PTHREAD_ATTR_DESTROY=1;
+  HAVE_PTHREAD_SELF=1;
+  HAVE_PTHREAD_EQUAL=1;
+  HAVE_PTHREAD_DETACH=1;
+  HAVE_PTHREAD_JOIN=1;
+  HAVE_PTHREAD_EXIT=1;
+  HAVE_PTHREAD_ONCE=1;
+  HAVE_PTHREAD_MUTEX_INIT=1;
+  HAVE_PTHREAD_MUTEXATTR_INIT=1;
+  HAVE_PTHREAD_MUTEXATTR_GETTYPE=1;
+  HAVE_PTHREAD_MUTEXATTR_SETTYPE=1;
+  HAVE_PTHREAD_MUTEXATTR_GETROBUST=1;
+  HAVE_PTHREAD_MUTEXATTR_SETROBUST=1;
+  HAVE_PTHREAD_MUTEXATTR_DESTROY=1;
+  HAVE_PTHREAD_MUTEX_LOCK=1;
+  HAVE_PTHREAD_MUTEX_TRYLOCK=1;
+  HAVE_PTHREAD_MUTEX_TIMEDLOCK=1;
+  HAVE_PTHREAD_MUTEX_UNLOCK=1;
+  HAVE_PTHREAD_MUTEX_DESTROY=1;
+  HAVE_PTHREAD_RWLOCK_INIT=1;
+  HAVE_PTHREAD_RWLOCKATTR_INIT=1;
+  HAVE_PTHREAD_RWLOCKATTR_DESTROY=1;
+  HAVE_PTHREAD_RWLOCK_RDLOCK=1;
+  HAVE_PTHREAD_RWLOCK_WRLOCK=1;
+  HAVE_PTHREAD_RWLOCK_TRYRDLOCK=1;
+  HAVE_PTHREAD_RWLOCK_TRYWRLOCK=1;
+  HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK=1;
+  HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK=1;
+  HAVE_PTHREAD_RWLOCK_UNLOCK=1;
+  HAVE_PTHREAD_RWLOCK_DESTROY=1;
+  HAVE_PTHREAD_COND_INIT=1;
+  HAVE_PTHREAD_CONDATTR_INIT=1;
+  HAVE_PTHREAD_CONDATTR_DESTROY=1;
+  HAVE_PTHREAD_COND_WAIT=1;
+  HAVE_PTHREAD_COND_TIMEDWAIT=1;
+  HAVE_PTHREAD_COND_SIGNAL=1;
+  HAVE_PTHREAD_COND_BROADCAST=1;
+  HAVE_PTHREAD_COND_DESTROY=1;
+  HAVE_PTHREAD_KEY_CREATE=1;
+  HAVE_PTHREAD_SETSPECIFIC=1;
+  HAVE_PTHREAD_GETSPECIFIC=1;
+  HAVE_PTHREAD_KEY_DELETE=1;
+  HAVE_PTHREAD_SPIN_INIT=1;
+  HAVE_PTHREAD_SPIN_LOCK=1;
+  HAVE_PTHREAD_SPIN_TRYLOCK=1;
+  HAVE_PTHREAD_SPIN_UNLOCK=1;
+  HAVE_PTHREAD_SPIN_DESTROY=1;
+  REPLACE_PTHREAD_CREATE=0;
+  REPLACE_PTHREAD_ATTR_INIT=0;
+  REPLACE_PTHREAD_ATTR_GETDETACHSTATE=0;
+  REPLACE_PTHREAD_ATTR_SETDETACHSTATE=0;
+  REPLACE_PTHREAD_ATTR_DESTROY=0;
+  REPLACE_PTHREAD_SELF=0;
+  REPLACE_PTHREAD_EQUAL=0;
+  REPLACE_PTHREAD_DETACH=0;
+  REPLACE_PTHREAD_JOIN=0;
+  REPLACE_PTHREAD_EXIT=0;
+  REPLACE_PTHREAD_ONCE=0;
+  REPLACE_PTHREAD_MUTEX_INIT=0;
+  REPLACE_PTHREAD_MUTEXATTR_INIT=0;
+  REPLACE_PTHREAD_MUTEXATTR_GETTYPE=0;
+  REPLACE_PTHREAD_MUTEXATTR_SETTYPE=0;
+  REPLACE_PTHREAD_MUTEXATTR_GETROBUST=0;
+  REPLACE_PTHREAD_MUTEXATTR_SETROBUST=0;
+  REPLACE_PTHREAD_MUTEXATTR_DESTROY=0;
+  REPLACE_PTHREAD_MUTEX_LOCK=0;
+  REPLACE_PTHREAD_MUTEX_TRYLOCK=0;
+  REPLACE_PTHREAD_MUTEX_TIMEDLOCK=0;
+  REPLACE_PTHREAD_MUTEX_UNLOCK=0;
+  REPLACE_PTHREAD_MUTEX_DESTROY=0;
+  REPLACE_PTHREAD_RWLOCK_INIT=0;
+  REPLACE_PTHREAD_RWLOCKATTR_INIT=0;
+  REPLACE_PTHREAD_RWLOCKATTR_DESTROY=0;
+  REPLACE_PTHREAD_RWLOCK_RDLOCK=0;
+  REPLACE_PTHREAD_RWLOCK_WRLOCK=0;
+  REPLACE_PTHREAD_RWLOCK_TRYRDLOCK=0;
+  REPLACE_PTHREAD_RWLOCK_TRYWRLOCK=0;
+  REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK=0;
+  REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK=0;
+  REPLACE_PTHREAD_RWLOCK_UNLOCK=0;
+  REPLACE_PTHREAD_RWLOCK_DESTROY=0;
+  REPLACE_PTHREAD_COND_INIT=0;
+  REPLACE_PTHREAD_CONDATTR_INIT=0;
+  REPLACE_PTHREAD_CONDATTR_DESTROY=0;
+  REPLACE_PTHREAD_COND_WAIT=0;
+  REPLACE_PTHREAD_COND_TIMEDWAIT=0;
+  REPLACE_PTHREAD_COND_SIGNAL=0;
+  REPLACE_PTHREAD_COND_BROADCAST=0;
+  REPLACE_PTHREAD_COND_DESTROY=0;
+  REPLACE_PTHREAD_KEY_CREATE=0;
+  REPLACE_PTHREAD_SETSPECIFIC=0;
+  REPLACE_PTHREAD_GETSPECIFIC=0;
+  REPLACE_PTHREAD_KEY_DELETE=0;
+  REPLACE_PTHREAD_SPIN_INIT=0;
+  REPLACE_PTHREAD_SPIN_LOCK=0;
+  REPLACE_PTHREAD_SPIN_TRYLOCK=0;
+  REPLACE_PTHREAD_SPIN_UNLOCK=0;
+  REPLACE_PTHREAD_SPIN_DESTROY=0;
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_pthread_h='<'pthread.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <pthread.h>" >&5
+printf %s "checking absolute name of <pthread.h>... " >&6; }
+if test ${gl_cv_next_pthread_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_pthread_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'pthread.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_pthread_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_pthread_h
+           gl_cv_next_pthread_h='"'$gl_header'"'
+          else
+               gl_cv_next_pthread_h='<'pthread.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_pthread_h" >&5
+printf "%s\n" "$gl_cv_next_pthread_h" >&6; }
+     fi
+     NEXT_PTHREAD_H=$gl_cv_next_pthread_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'pthread.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_pthread_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H=$gl_next_as_first_directive
+
+
+
+
+  if test $ac_cv_header_pthread_h = yes; then
+    HAVE_PTHREAD_H=1
+
+
+      if { case "$host_os" in mingw*) true;; *) false;; esac; } \
+         && test $gl_threads_api = windows; then
+        HAVE_PTHREAD_H=0
+      fi
+
+  else
+    HAVE_PTHREAD_H=0
+  fi
+
+
+  ac_fn_c_check_type "$LINENO" "pthread_t" "ac_cv_type_pthread_t" "$ac_includes_default
+     #if HAVE_PTHREAD_H
+      #include <pthread.h>
+     #endif
+"
+if test "x$ac_cv_type_pthread_t" = xyes
+then :
+
+printf "%s\n" "#define HAVE_PTHREAD_T 1" >>confdefs.h
+
+
+fi
+ac_fn_c_check_type "$LINENO" "pthread_spinlock_t" "ac_cv_type_pthread_spinlock_t" "$ac_includes_default
+     #if HAVE_PTHREAD_H
+      #include <pthread.h>
+     #endif
+"
+if test "x$ac_cv_type_pthread_spinlock_t" = xyes
+then :
+
+printf "%s\n" "#define HAVE_PTHREAD_SPINLOCK_T 1" >>confdefs.h
+
+
+fi
+
+  if test $ac_cv_type_pthread_t != yes; then
+    HAVE_PTHREAD_T=0
+  fi
+  if test $ac_cv_type_pthread_spinlock_t != yes; then
+    HAVE_PTHREAD_SPINLOCK_T=0
+  fi
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for PTHREAD_CREATE_DETACHED" >&5
+printf %s "checking for PTHREAD_CREATE_DETACHED... " >&6; }
+if test ${gl_cv_const_PTHREAD_CREATE_DETACHED+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+            int x = PTHREAD_CREATE_DETACHED;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_const_PTHREAD_CREATE_DETACHED=yes
+else $as_nop
+  gl_cv_const_PTHREAD_CREATE_DETACHED=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_const_PTHREAD_CREATE_DETACHED" >&5
+printf "%s\n" "$gl_cv_const_PTHREAD_CREATE_DETACHED" >&6; }
+  if test $gl_cv_const_PTHREAD_CREATE_DETACHED != yes; then
+    HAVE_PTHREAD_CREATE_DETACHED=0
+  fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for PTHREAD_MUTEX_RECURSIVE" >&5
+printf %s "checking for PTHREAD_MUTEX_RECURSIVE... " >&6; }
+if test ${gl_cv_const_PTHREAD_MUTEX_RECURSIVE+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+            int x = PTHREAD_MUTEX_RECURSIVE;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_const_PTHREAD_MUTEX_RECURSIVE=yes
+else $as_nop
+  gl_cv_const_PTHREAD_MUTEX_RECURSIVE=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_const_PTHREAD_MUTEX_RECURSIVE" >&5
+printf "%s\n" "$gl_cv_const_PTHREAD_MUTEX_RECURSIVE" >&6; }
+  if test $gl_cv_const_PTHREAD_MUTEX_RECURSIVE != yes; then
+    HAVE_PTHREAD_MUTEX_RECURSIVE=0
+  fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for PTHREAD_MUTEX_ROBUST" >&5
+printf %s "checking for PTHREAD_MUTEX_ROBUST... " >&6; }
+if test ${gl_cv_const_PTHREAD_MUTEX_ROBUST+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+            int x = PTHREAD_MUTEX_ROBUST;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_const_PTHREAD_MUTEX_ROBUST=yes
+else $as_nop
+  gl_cv_const_PTHREAD_MUTEX_ROBUST=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_const_PTHREAD_MUTEX_ROBUST" >&5
+printf "%s\n" "$gl_cv_const_PTHREAD_MUTEX_ROBUST" >&6; }
+  if test $gl_cv_const_PTHREAD_MUTEX_ROBUST != yes; then
+    HAVE_PTHREAD_MUTEX_ROBUST=0
+  fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for PTHREAD_PROCESS_SHARED" >&5
+printf %s "checking for PTHREAD_PROCESS_SHARED... " >&6; }
+if test ${gl_cv_const_PTHREAD_PROCESS_SHARED+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+            int x = PTHREAD_PROCESS_SHARED;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_const_PTHREAD_PROCESS_SHARED=yes
+else $as_nop
+  gl_cv_const_PTHREAD_PROCESS_SHARED=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_const_PTHREAD_PROCESS_SHARED" >&5
+printf "%s\n" "$gl_cv_const_PTHREAD_PROCESS_SHARED" >&6; }
+  if test $gl_cv_const_PTHREAD_PROCESS_SHARED != yes; then
+    HAVE_PTHREAD_PROCESS_SHARED=0
+  fi
+
+
+
+
+
+
+
+    LIB_PTHREAD="$LIBPMULTITHREAD"
+
+
+
+
+  GL_GNULIB_PTHREAD_THREAD=0
+
+
+
+  GL_GNULIB_PTHREAD_ONCE=0
+
+
+
+  GL_GNULIB_PTHREAD_MUTEX=0
+
+
+
+  GL_GNULIB_PTHREAD_RWLOCK=0
+
+
+
+  GL_GNULIB_PTHREAD_COND=0
+
+
+
+  GL_GNULIB_PTHREAD_TSS=0
+
+
+
+  GL_GNULIB_PTHREAD_SPIN=0
+
+
+
+  GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK=0
+
+
+
+
+
+    HAVE_SCHED_YIELD=1;
+  REPLACE_SCHED_YIELD=0;
+
+
+
+
+
+
+
+  ac_fn_c_check_header_compile "$LINENO" "sched.h" "ac_cv_header_sched_h" "#if HAVE_SYS_CDEFS_H
+       #include <sys/cdefs.h>
+      #endif
+
+"
+if test "x$ac_cv_header_sched_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SCHED_H 1" >>confdefs.h
+
+fi
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_sched_h='<'sched.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <sched.h>" >&5
+printf %s "checking absolute name of <sched.h>... " >&6; }
+if test ${gl_cv_next_sched_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sched.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'sched.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_sched_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_sched_h
+           gl_cv_next_sched_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_sched_h" >&5
+printf "%s\n" "$gl_cv_next_sched_h" >&6; }
+     fi
+     NEXT_SCHED_H=$gl_cv_next_sched_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'sched.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_sched_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_SCHED_H=$gl_next_as_first_directive
+
+
+
+
+
+  if test "$ac_cv_header_sched_h" = yes; then
+    HAVE_SCHED_H=1
+  else
+    HAVE_SCHED_H=0
+  fi
+
+
+  if test "$HAVE_SCHED_H" = 1; then
+    ac_fn_c_check_type "$LINENO" "struct sched_param" "ac_cv_type_struct_sched_param" "#if HAVE_SYS_CDEFS_H
+         #include <sys/cdefs.h>
+        #endif
+        #include <sched.h>
+
+"
+if test "x$ac_cv_type_struct_sched_param" = xyes
+then :
+  HAVE_STRUCT_SCHED_PARAM=1
+else $as_nop
+  HAVE_STRUCT_SCHED_PARAM=0
+fi
+
+  else
+    HAVE_STRUCT_SCHED_PARAM=0
+    case "$host_os" in
+      os2*)
+                ac_fn_c_check_type "$LINENO" "struct sched_param" "ac_cv_type_struct_sched_param" "#include <spawn.h>
+"
+if test "x$ac_cv_type_struct_sched_param" = xyes
+then :
+  HAVE_STRUCT_SCHED_PARAM=1
+fi
+
+        ;;
+      vms)
+                ac_fn_c_check_type "$LINENO" "struct sched_param" "ac_cv_type_struct_sched_param" "#include <pthread.h>
+"
+if test "x$ac_cv_type_struct_sched_param" = xyes
+then :
+  HAVE_STRUCT_SCHED_PARAM=1
+fi
+
+        ;;
+    esac
+  fi
+
+
+  if test "$ac_cv_header_sys_cdefs_h" = yes; then
+    HAVE_SYS_CDEFS_H=1
+  else
+    HAVE_SYS_CDEFS_H=0
+  fi
+
+
+
+
+
+
+
+
+
+
+  GL_GNULIB_SCHED_YIELD=0
+
+
+
+
+
+  GL_GNULIB_PSELECT=0
+
+
+
+  GL_GNULIB_SELECT=0
+
+
+
+
+ac_fn_check_decl "$LINENO" "setenv" "ac_cv_have_decl_setenv" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_setenv" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_SETENV $ac_have_decl" >>confdefs.h
+
+
+
+
+
+  if test $ac_cv_have_decl_setenv = no; then
+    HAVE_DECL_SETENV=0
+  fi
+
+
+
+
+
+  ac_fn_c_check_header_compile "$LINENO" "search.h" "ac_cv_header_search_h" "$ac_includes_default"
+if test "x$ac_cv_header_search_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SEARCH_H 1" >>confdefs.h
+
+fi
+
+  ac_fn_c_check_func "$LINENO" "tsearch" "ac_cv_func_tsearch"
+if test "x$ac_cv_func_tsearch" = xyes
+then :
+  printf "%s\n" "#define HAVE_TSEARCH 1" >>confdefs.h
+
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether snprintf returns a byte count as in C99" >&5
+printf %s "checking whether snprintf returns a byte count as in C99... " >&6; }
+if test ${gl_cv_func_snprintf_retval_c99+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                                 # Guess yes on glibc systems.
+           *-gnu* | gnu*)        gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on musl systems.
+           *-musl*)              gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on FreeBSD >= 5.
+           freebsd[1-4].*)       gl_cv_func_snprintf_retval_c99="guessing no";;
+           freebsd* | kfreebsd*) gl_cv_func_snprintf_retval_c99="guessing yes";;
+           midnightbsd*)         gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on Mac OS X >= 10.3.
+           darwin[1-6].*)        gl_cv_func_snprintf_retval_c99="guessing no";;
+           darwin*)              gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on OpenBSD >= 3.9.
+           openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*)
+                                 gl_cv_func_snprintf_retval_c99="guessing no";;
+           openbsd*)             gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on Solaris >= 2.10.
+           solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";;
+           solaris*)             gl_cv_func_printf_sizes_c99="guessing no";;
+                                 # Guess yes on AIX >= 4.
+           aix[1-3]*)            gl_cv_func_snprintf_retval_c99="guessing no";;
+           aix*)                 gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on NetBSD >= 3.
+           netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*)
+                                 gl_cv_func_snprintf_retval_c99="guessing no";;
+           netbsd*)              gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on BeOS.
+           beos*)                gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on Android.
+           linux*-android*)      gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on MSVC, no on mingw.
+           mingw*)               cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#ifdef _MSC_VER
+ Known
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Known" >/dev/null 2>&1
+then :
+  gl_cv_func_snprintf_retval_c99="guessing yes"
+else $as_nop
+  gl_cv_func_snprintf_retval_c99="guessing no"
+fi
+rm -rf conftest*
+
+                                 ;;
+                                 # If we don't know, obey --enable-cross-guesses.
+           *)                    gl_cv_func_snprintf_retval_c99="$gl_cross_guess_normal";;
+         esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#include <string.h>
+#if HAVE_SNPRINTF
+# define my_snprintf snprintf
+#else
+# include <stdarg.h>
+static int my_snprintf (char *buf, int size, const char *format, ...)
+{
+  va_list args;
+  int ret;
+  va_start (args, format);
+  ret = vsnprintf (buf, size, format, args);
+  va_end (args);
+  return ret;
+}
+#endif
+static char buf[100];
+int main ()
+{
+  strcpy (buf, "ABCDEF");
+  if (my_snprintf (buf, 3, "%d %d", 4567, 89) != 7)
+    return 1;
+  if (my_snprintf (buf, 0, "%d %d", 4567, 89) != 7)
+    return 2;
+  if (my_snprintf (NULL, 0, "%d %d", 4567, 89) != 7)
+    return 3;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_snprintf_retval_c99=yes
+else $as_nop
+  gl_cv_func_snprintf_retval_c99=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_snprintf_retval_c99" >&5
+printf "%s\n" "$gl_cv_func_snprintf_retval_c99" >&6; }
+
+ac_fn_check_decl "$LINENO" "snprintf" "ac_cv_have_decl_snprintf" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_snprintf" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_SNPRINTF $ac_have_decl" >>confdefs.h
+
+
+
+
+
+
+
+  if test $ac_cv_header_sys_ioctl_h = yes; then
+    HAVE_SYS_IOCTL_H=1
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether <sys/ioctl.h> declares ioctl" >&5
+printf %s "checking whether <sys/ioctl.h> declares ioctl... " >&6; }
+if test ${gl_cv_decl_ioctl_in_sys_ioctl_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/ioctl.h>
+int
+main (void)
+{
+(void) ioctl;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_decl_ioctl_in_sys_ioctl_h=yes
+else $as_nop
+  gl_cv_decl_ioctl_in_sys_ioctl_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_decl_ioctl_in_sys_ioctl_h" >&5
+printf "%s\n" "$gl_cv_decl_ioctl_in_sys_ioctl_h" >&6; }
+  else
+    HAVE_SYS_IOCTL_H=0
+  fi
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_sys_ioctl_h='<'sys/ioctl.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <sys/ioctl.h>" >&5
+printf %s "checking absolute name of <sys/ioctl.h>... " >&6; }
+if test ${gl_cv_next_sys_ioctl_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_sys_ioctl_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/ioctl.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'sys/ioctl.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_sys_ioctl_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_sys_ioctl_h
+           gl_cv_next_sys_ioctl_h='"'$gl_header'"'
+          else
+               gl_cv_next_sys_ioctl_h='<'sys/ioctl.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_sys_ioctl_h" >&5
+printf "%s\n" "$gl_cv_next_sys_ioctl_h" >&6; }
+     fi
+     NEXT_SYS_IOCTL_H=$gl_cv_next_sys_ioctl_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'sys/ioctl.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_sys_ioctl_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H=$gl_next_as_first_directive
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_sys_uio_h='<'sys/uio.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <sys/uio.h>" >&5
+printf %s "checking absolute name of <sys/uio.h>... " >&6; }
+if test ${gl_cv_next_sys_uio_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_sys_uio_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/uio.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'sys/uio.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_sys_uio_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_sys_uio_h
+           gl_cv_next_sys_uio_h='"'$gl_header'"'
+          else
+               gl_cv_next_sys_uio_h='<'sys/uio.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_sys_uio_h" >&5
+printf "%s\n" "$gl_cv_next_sys_uio_h" >&6; }
+     fi
+     NEXT_SYS_UIO_H=$gl_cv_next_sys_uio_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'sys/uio.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_sys_uio_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H=$gl_next_as_first_directive
+
+
+
+
+  if test $ac_cv_header_sys_uio_h = yes; then
+    HAVE_SYS_UIO_H=1
+  else
+    HAVE_SYS_UIO_H=0
+  fi
+
+
+
+
+ac_fn_check_decl "$LINENO" "unsetenv" "ac_cv_have_decl_unsetenv" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_unsetenv" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_UNSETENV $ac_have_decl" >>confdefs.h
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for inttypes.h" >&5
+printf %s "checking for inttypes.h... " >&6; }
+if test ${gl_cv_header_inttypes_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <inttypes.h>
+
+int
+main (void)
+{
+uintmax_t i = (uintmax_t) -1; return !i;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_inttypes_h=yes
+else $as_nop
+  gl_cv_header_inttypes_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_inttypes_h" >&5
+printf "%s\n" "$gl_cv_header_inttypes_h" >&6; }
+  if test $gl_cv_header_inttypes_h = yes; then
+
+printf "%s\n" "#define HAVE_INTTYPES_H_WITH_UINTMAX 1" >>confdefs.h
+
+  fi
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdint.h" >&5
+printf %s "checking for stdint.h... " >&6; }
+if test ${gl_cv_header_stdint_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+            #include <stdint.h>
+int
+main (void)
+{
+uintmax_t i = (uintmax_t) -1; return !i;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_stdint_h=yes
+else $as_nop
+  gl_cv_header_stdint_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_stdint_h" >&5
+printf "%s\n" "$gl_cv_header_stdint_h" >&6; }
+  if test $gl_cv_header_stdint_h = yes; then
+
+printf "%s\n" "#define HAVE_STDINT_H_WITH_UINTMAX 1" >>confdefs.h
+
+  fi
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for intmax_t" >&5
+printf %s "checking for intmax_t... " >&6; }
+if test ${gt_cv_c_intmax_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stddef.h>
+#include <stdlib.h>
+#if HAVE_STDINT_H_WITH_UINTMAX
+#include <stdint.h>
+#endif
+#if HAVE_INTTYPES_H_WITH_UINTMAX
+#include <inttypes.h>
+#endif
+
+int
+main (void)
+{
+intmax_t x = -1; return !x;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gt_cv_c_intmax_t=yes
+else $as_nop
+  gt_cv_c_intmax_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_c_intmax_t" >&5
+printf "%s\n" "$gt_cv_c_intmax_t" >&6; }
+  if test $gt_cv_c_intmax_t = yes; then
+
+printf "%s\n" "#define HAVE_INTMAX_T 1" >>confdefs.h
+
+  else
+
+printf "%s\n" "#define intmax_t long long" >>confdefs.h
+
+  fi
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking where to find the exponent in a 'double'" >&5
+printf %s "checking where to find the exponent in a 'double'... " >&6; }
+if test ${gl_cv_cc_double_expbit0+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      if test "$cross_compiling" = yes
+then :
+
+                                                                      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#if defined arm || defined __arm || defined __arm__
+  mixed_endianness
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "mixed_endianness" >/dev/null 2>&1
+then :
+  gl_cv_cc_double_expbit0="unknown"
+else $as_nop
+
+                                                         :
+if test ${ac_cv_c_bigendian+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_c_bigendian=unknown
+    # See if we're dealing with a universal compiler.
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifndef __APPLE_CC__
+	       not a universal capable compiler
+	     #endif
+	     typedef int dummy;
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+	# Check for potential -arch flags.  It is not universal unless
+	# there are at least two -arch flags with different values.
+	ac_arch=
+	ac_prev=
+	for ac_word in $CC $CFLAGS $CPPFLAGS $LDFLAGS; do
+	 if test -n "$ac_prev"; then
+	   case $ac_word in
+	     i?86 | x86_64 | ppc | ppc64)
+	       if test -z "$ac_arch" || test "$ac_arch" = "$ac_word"; then
+		 ac_arch=$ac_word
+	       else
+		 ac_cv_c_bigendian=universal
+		 break
+	       fi
+	       ;;
+	   esac
+	   ac_prev=
+	 elif test "x$ac_word" = "x-arch"; then
+	   ac_prev=arch
+	 fi
+       done
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+    if test $ac_cv_c_bigendian = unknown; then
+      # See if sys/param.h defines the BYTE_ORDER macro.
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+	     #include <sys/param.h>
+
+int
+main (void)
+{
+#if ! (defined BYTE_ORDER && defined BIG_ENDIAN \
+		     && defined LITTLE_ENDIAN && BYTE_ORDER && BIG_ENDIAN \
+		     && LITTLE_ENDIAN)
+	      bogus endian macros
+	     #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  # It does; now see whether it defined to BIG_ENDIAN or not.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+		#include <sys/param.h>
+
+int
+main (void)
+{
+#if BYTE_ORDER != BIG_ENDIAN
+		 not big endian
+		#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_c_bigendian=yes
+else $as_nop
+  ac_cv_c_bigendian=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+    fi
+    if test $ac_cv_c_bigendian = unknown; then
+      # See if <limits.h> defines _LITTLE_ENDIAN or _BIG_ENDIAN (e.g., Solaris).
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+
+int
+main (void)
+{
+#if ! (defined _LITTLE_ENDIAN || defined _BIG_ENDIAN)
+	      bogus endian macros
+	     #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  # It does; now see whether it defined to _BIG_ENDIAN or not.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+
+int
+main (void)
+{
+#ifndef _BIG_ENDIAN
+		 not big endian
+		#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_c_bigendian=yes
+else $as_nop
+  ac_cv_c_bigendian=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+    fi
+    if test $ac_cv_c_bigendian = unknown; then
+      # Compile a test program.
+      if test "$cross_compiling" = yes
+then :
+  # Try to guess by grepping values from an object file.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+unsigned short int ascii_mm[] =
+		  { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
+		unsigned short int ascii_ii[] =
+		  { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
+		int use_ascii (int i) {
+		  return ascii_mm[i] + ascii_ii[i];
+		}
+		unsigned short int ebcdic_ii[] =
+		  { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
+		unsigned short int ebcdic_mm[] =
+		  { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
+		int use_ebcdic (int i) {
+		  return ebcdic_mm[i] + ebcdic_ii[i];
+		}
+		extern int foo;
+
+int
+main (void)
+{
+return use_ascii (foo) == use_ebcdic (foo);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  if grep BIGenDianSyS conftest.$ac_objext >/dev/null; then
+	      ac_cv_c_bigendian=yes
+	    fi
+	    if grep LiTTleEnDian conftest.$ac_objext >/dev/null ; then
+	      if test "$ac_cv_c_bigendian" = unknown; then
+		ac_cv_c_bigendian=no
+	      else
+		# finding both strings is unlikely to happen, but who knows?
+		ac_cv_c_bigendian=unknown
+	      fi
+	    fi
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main (void)
+{
+
+	     /* Are we little or big endian?  From Harbison&Steele.  */
+	     union
+	     {
+	       long int l;
+	       char c[sizeof (long int)];
+	     } u;
+	     u.l = 1;
+	     return u.c[sizeof (long int) - 1] == 1;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  ac_cv_c_bigendian=no
+else $as_nop
+  ac_cv_c_bigendian=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+    fi
+fi
+:
+ case $ac_cv_c_bigendian in #(
+   yes)
+     gl_cv_cc_double_expbit0="word 0 bit 20";; #(
+   no)
+     gl_cv_cc_double_expbit0="word 1 bit 20" ;; #(
+   universal)
+
+printf "%s\n" "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h
+
+     ;; #(
+   *)
+     gl_cv_cc_double_expbit0="unknown" ;;
+ esac
+
+
+fi
+rm -rf conftest*
+
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <float.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#define NWORDS \
+  ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+typedef union { double value; unsigned int word[NWORDS]; } memory_double;
+static unsigned int ored_words[NWORDS];
+static unsigned int anded_words[NWORDS];
+static void add_to_ored_words (double x)
+{
+  memory_double m;
+  size_t i;
+  /* Clear it first, in case sizeof (double) < sizeof (memory_double).  */
+  memset (&m, 0, sizeof (memory_double));
+  m.value = x;
+  for (i = 0; i < NWORDS; i++)
+    {
+      ored_words[i] |= m.word[i];
+      anded_words[i] &= m.word[i];
+    }
+}
+int main ()
+{
+  size_t j;
+  FILE *fp = fopen ("conftest.out", "w");
+  if (fp == NULL)
+    return 1;
+  for (j = 0; j < NWORDS; j++)
+    anded_words[j] = ~ (unsigned int) 0;
+  add_to_ored_words (0.25);
+  add_to_ored_words (0.5);
+  add_to_ored_words (1.0);
+  add_to_ored_words (2.0);
+  add_to_ored_words (4.0);
+  /* Remove bits that are common (e.g. if representation of the first mantissa
+     bit is explicit).  */
+  for (j = 0; j < NWORDS; j++)
+    ored_words[j] &= ~anded_words[j];
+  /* Now find the nonzero word.  */
+  for (j = 0; j < NWORDS; j++)
+    if (ored_words[j] != 0)
+      break;
+  if (j < NWORDS)
+    {
+      size_t i;
+      for (i = j + 1; i < NWORDS; i++)
+        if (ored_words[i] != 0)
+          {
+            fprintf (fp, "unknown");
+            return (fclose (fp) != 0);
+          }
+      for (i = 0; ; i++)
+        if ((ored_words[j] >> i) & 1)
+          {
+            fprintf (fp, "word %d bit %d", (int) j, (int) i);
+            return (fclose (fp) != 0);
+          }
+    }
+  fprintf (fp, "unknown");
+  return (fclose (fp) != 0);
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_cc_double_expbit0=`cat conftest.out`
+else $as_nop
+  gl_cv_cc_double_expbit0="unknown"
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      rm -f conftest.out
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_double_expbit0" >&5
+printf "%s\n" "$gl_cv_cc_double_expbit0" >&6; }
+  case "$gl_cv_cc_double_expbit0" in
+    word*bit*)
+      word=`echo "$gl_cv_cc_double_expbit0" | sed -e 's/word //' -e 's/ bit.*//'`
+      bit=`echo "$gl_cv_cc_double_expbit0" | sed -e 's/word.*bit //'`
+
+printf "%s\n" "#define DBL_EXPBIT0_WORD $word" >>confdefs.h
+
+
+printf "%s\n" "#define DBL_EXPBIT0_BIT $bit" >>confdefs.h
+
+      ;;
+  esac
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether snprintf truncates the result as in C99" >&5
+printf %s "checking whether snprintf truncates the result as in C99... " >&6; }
+if test ${gl_cv_func_snprintf_truncation_c99+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      if test "$cross_compiling" = yes
+then :
+
+         case "$host_os" in
+                                 # Guess yes on glibc systems.
+           *-gnu* | gnu*)        gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on musl systems.
+           *-musl*)              gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on FreeBSD >= 5.
+           freebsd[1-4].*)       gl_cv_func_snprintf_truncation_c99="guessing no";;
+           freebsd* | kfreebsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";;
+           midnightbsd*)         gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on Mac OS X >= 10.3.
+           darwin[1-6].*)        gl_cv_func_snprintf_truncation_c99="guessing no";;
+           darwin*)              gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on OpenBSD >= 3.9.
+           openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*)
+                                 gl_cv_func_snprintf_truncation_c99="guessing no";;
+           openbsd*)             gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on Solaris >= 2.6.
+           solaris2.[0-5] | solaris2.[0-5].*)
+                                 gl_cv_func_snprintf_truncation_c99="guessing no";;
+           solaris*)             gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on AIX >= 4.
+           aix[1-3]*)            gl_cv_func_snprintf_truncation_c99="guessing no";;
+           aix*)                 gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on HP-UX >= 11.
+           hpux[7-9]* | hpux10*) gl_cv_func_snprintf_truncation_c99="guessing no";;
+           hpux*)                gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on IRIX >= 6.5.
+           irix6.5)              gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on OSF/1 >= 5.
+           osf[3-4]*)            gl_cv_func_snprintf_truncation_c99="guessing no";;
+           osf*)                 gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on NetBSD >= 3.
+           netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*)
+                                 gl_cv_func_snprintf_truncation_c99="guessing no";;
+           netbsd*)              gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on BeOS.
+           beos*)                gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on Android.
+           linux*-android*)      gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess no on native Windows.
+           mingw*)               gl_cv_func_snprintf_truncation_c99="guessing no";;
+                                 # If we don't know, obey --enable-cross-guesses.
+           *)                    gl_cv_func_snprintf_truncation_c99="$gl_cross_guess_normal";;
+         esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#include <string.h>
+#if HAVE_SNPRINTF
+# define my_snprintf snprintf
+#else
+# include <stdarg.h>
+static int my_snprintf (char *buf, int size, const char *format, ...)
+{
+  va_list args;
+  int ret;
+  va_start (args, format);
+  ret = vsnprintf (buf, size, format, args);
+  va_end (args);
+  return ret;
+}
+#endif
+static char buf[100];
+int main ()
+{
+  strcpy (buf, "ABCDEF");
+  my_snprintf (buf, 3, "%d %d", 4567, 89);
+  if (memcmp (buf, "45\0DEF", 6) != 0)
+    return 1;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_snprintf_truncation_c99=yes
+else $as_nop
+  gl_cv_func_snprintf_truncation_c99=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_snprintf_truncation_c99" >&5
+printf "%s\n" "$gl_cv_func_snprintf_truncation_c99" >&6; }
+
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "snprintf" "ac_cv_func_snprintf"
+if test "x$ac_cv_func_snprintf" = xyes
+then :
+  printf "%s\n" "#define HAVE_SNPRINTF 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "strnlen" "ac_cv_func_strnlen"
+if test "x$ac_cv_func_strnlen" = xyes
+then :
+  printf "%s\n" "#define HAVE_STRNLEN 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "wcslen" "ac_cv_func_wcslen"
+if test "x$ac_cv_func_wcslen" = xyes
+then :
+  printf "%s\n" "#define HAVE_WCSLEN 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "wcsnlen" "ac_cv_func_wcsnlen"
+if test "x$ac_cv_func_wcsnlen" = xyes
+then :
+  printf "%s\n" "#define HAVE_WCSNLEN 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "mbrtowc" "ac_cv_func_mbrtowc"
+if test "x$ac_cv_func_mbrtowc" = xyes
+then :
+  printf "%s\n" "#define HAVE_MBRTOWC 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "wcrtomb" "ac_cv_func_wcrtomb"
+if test "x$ac_cv_func_wcrtomb" = xyes
+then :
+  printf "%s\n" "#define HAVE_WCRTOMB 1" >>confdefs.h
+
+fi
+
+      ac_fn_check_decl "$LINENO" "_snprintf" "ac_cv_have_decl__snprintf" "#include <stdio.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl__snprintf" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL__SNPRINTF $ac_have_decl" >>confdefs.h
+
+
+
+  case "$gl_cv_func_snprintf_retval_c99" in
+    *yes)
+
+printf "%s\n" "#define HAVE_SNPRINTF_RETVAL_C99 1" >>confdefs.h
+
+      ;;
+  esac
+
+  case "$gl_cv_func_snprintf_truncation_c99" in
+    *yes)
+
+printf "%s\n" "#define HAVE_SNPRINTF_TRUNCATION_C99 1" >>confdefs.h
+
+      ;;
+  esac
+
+
+   if false; then
+  GL_COND_LIBTOOL_TRUE=
+  GL_COND_LIBTOOL_FALSE='#'
+else
+  GL_COND_LIBTOOL_TRUE='#'
+  GL_COND_LIBTOOL_FALSE=
+fi
+
+  gl_cond_libtool=false
+  gl_libdeps=
+  gl_ltlibdeps=
+  gl_m4_base='m4'
+
+
+
+
+
+
+
+
+
+
+
+
+  gl_source_base='lib'
+
+
+  if test $ac_cv_func_alloca_works = no; then
+    :
+  fi
+
+  # Define an additional variable used in the Makefile substitution.
+  if test $ac_cv_working_alloca_h = yes; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for alloca as a compiler built-in" >&5
+printf %s "checking for alloca as a compiler built-in... " >&6; }
+if test ${gl_cv_rpl_alloca+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#if defined __GNUC__ || defined _AIX || defined _MSC_VER
+        Need own alloca
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Need own alloca" >/dev/null 2>&1
+then :
+  gl_cv_rpl_alloca=yes
+else $as_nop
+  gl_cv_rpl_alloca=no
+fi
+rm -rf conftest*
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_rpl_alloca" >&5
+printf "%s\n" "$gl_cv_rpl_alloca" >&6; }
+    if test $gl_cv_rpl_alloca = yes; then
+
+printf "%s\n" "#define HAVE_ALLOCA 1" >>confdefs.h
+
+      ALLOCA_H=alloca.h
+    else
+                  ALLOCA_H=
+    fi
+  else
+    ALLOCA_H=alloca.h
+  fi
+
+   if test -n "$ALLOCA_H"; then
+  GL_GENERATE_ALLOCA_H_TRUE=
+  GL_GENERATE_ALLOCA_H_FALSE='#'
+else
+  GL_GENERATE_ALLOCA_H_TRUE='#'
+  GL_GENERATE_ALLOCA_H_FALSE=
+fi
+
+
+  if test $ac_cv_working_alloca_h = yes; then
+    HAVE_ALLOCA_H=1
+  else
+    HAVE_ALLOCA_H=0
+  fi
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether to enable assertions" >&5
+printf %s "checking whether to enable assertions... " >&6; }
+  # Check whether --enable-assert was given.
+if test ${enable_assert+y}
+then :
+  enableval=$enable_assert; if test "x$enableval" = xno
+then :
+
+printf "%s\n" "#define NDEBUG 1" >>confdefs.h
+
+elif test "x$enableval" != xyes
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: invalid argument supplied to --enable-assert" >&5
+printf "%s\n" "$as_me: WARNING: invalid argument supplied to --enable-assert" >&2;}
+      enable_assert=yes
+fi
+else $as_nop
+  enable_assert=yes
+fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $enable_assert" >&5
+printf "%s\n" "$enable_assert" >&6; }
+
+
+
+
+
+
+
+
+  if test $ac_cv_func_btowc = no; then
+    HAVE_BTOWC=0
+  else
+
+
+
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether btowc(0) is correct" >&5
+printf %s "checking whether btowc(0) is correct... " >&6; }
+if test ${gl_cv_func_btowc_nul+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+        if test "$cross_compiling" = yes
+then :
+
+           case "$host_os" in
+                      # Guess no on Cygwin.
+             cygwin*) gl_cv_func_btowc_nul="guessing no" ;;
+                      # Guess yes on native Windows.
+             mingw*)  gl_cv_func_btowc_nul="guessing yes" ;;
+                      # Guess yes otherwise.
+             *)       gl_cv_func_btowc_nul="guessing yes" ;;
+           esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <wchar.h>
+int main ()
+{
+  if (btowc ('\0') != 0)
+    return 1;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_btowc_nul=yes
+else $as_nop
+  gl_cv_func_btowc_nul=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_btowc_nul" >&5
+printf "%s\n" "$gl_cv_func_btowc_nul" >&6; }
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether btowc(EOF) is correct" >&5
+printf %s "checking whether btowc(EOF) is correct... " >&6; }
+if test ${gl_cv_func_btowc_eof+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                        case "$host_os" in
+                  # Guess no on IRIX.
+          irix*)  gl_cv_func_btowc_eof="guessing no" ;;
+                  # Guess yes on native Windows.
+          mingw*) gl_cv_func_btowc_eof="guessing yes" ;;
+                  # Guess yes otherwise.
+          *)      gl_cv_func_btowc_eof="guessing yes" ;;
+        esac
+        if test $LOCALE_FR != none; then
+          if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdio.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+    {
+      if (btowc (EOF) != WEOF)
+        return 1;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_btowc_eof=yes
+else $as_nop
+  gl_cv_func_btowc_eof=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_btowc_eof" >&5
+printf "%s\n" "$gl_cv_func_btowc_eof" >&6; }
+
+    case "$gl_cv_func_btowc_nul" in
+      *yes) ;;
+      *) REPLACE_BTOWC=1 ;;
+    esac
+    case "$gl_cv_func_btowc_eof" in
+      *yes) ;;
+      *) REPLACE_BTOWC=1 ;;
+    esac
+  fi
+
+  if test $HAVE_BTOWC = 0 || test $REPLACE_BTOWC = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS btowc.$ac_objext"
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_BTOWC=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_BTOWC 1" >>confdefs.h
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for __builtin_expect" >&5
+printf %s "checking for __builtin_expect... " >&6; }
+if test ${gl_cv___builtin_expect+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+         int
+         main (int argc, char **argv)
+         {
+           argc = __builtin_expect (argc, 100);
+           return argv[argc != 100][0];
+         }
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv___builtin_expect=yes
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+             #include <builtins.h>
+             int
+             main (int argc, char **argv)
+             {
+               argc = __builtin_expect (argc, 100);
+               return argv[argc != 100][0];
+             }
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv___builtin_expect="in <builtins.h>"
+else $as_nop
+  gl_cv___builtin_expect=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv___builtin_expect" >&5
+printf "%s\n" "$gl_cv___builtin_expect" >&6; }
+  if test "$gl_cv___builtin_expect" = yes; then
+    printf "%s\n" "#define HAVE___BUILTIN_EXPECT 1" >>confdefs.h
+
+  elif test "$gl_cv___builtin_expect" = "in <builtins.h>"; then
+    printf "%s\n" "#define HAVE___BUILTIN_EXPECT 2" >>confdefs.h
+
+  fi
+
+
+
+    if test "$with_libsigsegv" = yes; then
+    if test "$gl_cv_lib_sigsegv" = yes; then
+      LIBCSTACK=$LIBSIGSEGV
+
+      LTLIBCSTACK=$LTLIBSIGSEGV
+
+    fi
+  fi
+
+
+
+
+  if test $REPLACE_CALLOC = 0; then
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether calloc (0, n) and calloc (n, 0) return nonnull" >&5
+printf %s "checking whether calloc (0, n) and calloc (n, 0) return nonnull... " >&6; }
+if test ${ac_cv_func_calloc_0_nonnull+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test $cross_compiling != yes; then
+       ac_cv_func_calloc_0_nonnull=yes
+       if test "$cross_compiling" = yes
+then :
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot run test program while cross compiling
+See \`config.log' for more details" "$LINENO" 5; }
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main (void)
+{
+int result = 0;
+              char * volatile p = calloc (0, 0);
+              if (!p)
+                result |= 1;
+              free (p);
+              return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+
+else $as_nop
+  ac_cv_func_calloc_0_nonnull=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+     else
+       case "$host_os" in
+                        # Guess yes on glibc systems.
+         *-gnu* | gnu*) ac_cv_func_calloc_0_nonnull="guessing yes" ;;
+                        # Guess yes on musl systems.
+         *-musl*)       ac_cv_func_calloc_0_nonnull="guessing yes" ;;
+                        # Guess yes on native Windows.
+         mingw*)        ac_cv_func_calloc_0_nonnull="guessing yes" ;;
+                        # If we don't know, obey --enable-cross-guesses.
+         *)             ac_cv_func_calloc_0_nonnull="$gl_cross_guess_normal" ;;
+       esac
+     fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_calloc_0_nonnull" >&5
+printf "%s\n" "$ac_cv_func_calloc_0_nonnull" >&6; }
+  case $ac_cv_func_calloc_0_nonnull in #(
+  *yes) :
+     ;; #(
+  *) :
+    REPLACE_CALLOC=1 ;;
+esac
+
+  fi
+
+  if test $REPLACE_CALLOC = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS calloc.$ac_objext"
+
+  fi
+
+
+
+  if test $REPLACE_MALLOC = 1; then
+    REPLACE_CALLOC=1
+  fi
+
+  if test $REPLACE_CALLOC = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS calloc.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_CALLOC_POSIX=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_CALLOC_POSIX 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_CHDIR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_CHDIR 1" >>confdefs.h
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether this system supports file names of any length" >&5
+printf %s "checking whether this system supports file names of any length... " >&6; }
+if test ${gl_cv_have_unlimited_file_name_length+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Arrange to define PATH_MAX, like "pathmax.h" does. */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <limits.h>
+#if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
+# include <sys/param.h>
+#endif
+#if !defined PATH_MAX && defined MAXPATHLEN
+# define PATH_MAX MAXPATHLEN
+#endif
+#ifdef __hpux
+# undef PATH_MAX
+# define PATH_MAX 1024
+#endif
+#if defined _WIN32 && ! defined __CYGWIN__
+# undef PATH_MAX
+# define PATH_MAX 260
+#endif
+
+#ifdef PATH_MAX
+have_arbitrary_file_name_length_limit
+#endif
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "have_arbitrary_file_name_length_limit" >/dev/null 2>&1
+then :
+  gl_cv_have_unlimited_file_name_length=no
+else $as_nop
+  gl_cv_have_unlimited_file_name_length=yes
+fi
+rm -rf conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_have_unlimited_file_name_length" >&5
+printf "%s\n" "$gl_cv_have_unlimited_file_name_length" >&6; }
+
+  if test $gl_cv_have_unlimited_file_name_length = no; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS chdir-long.$ac_objext"
+
+    :
+  fi
+
+
+printf "%s\n" "#define GNULIB_TEST_CLOEXEC 1" >>confdefs.h
+
+
+
+
+
+
+    if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+      REPLACE_CLOSE=1
+    fi
+
+
+
+
+
+
+  if test $ac_cv_header_sys_socket_h != yes; then
+                    ac_fn_c_check_header_compile "$LINENO" "winsock2.h" "ac_cv_header_winsock2_h" "$ac_includes_default"
+if test "x$ac_cv_header_winsock2_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_WINSOCK2_H 1" >>confdefs.h
+
+fi
+
+  fi
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    HAVE_WINSOCK2_H=1
+    UNISTD_H_HAVE_WINSOCK2_H=1
+    SYS_IOCTL_H_HAVE_WINSOCK2_H=1
+  else
+    HAVE_WINSOCK2_H=0
+  fi
+
+
+    if test $UNISTD_H_HAVE_WINSOCK2_H = 1; then
+                        REPLACE_CLOSE=1
+    fi
+
+
+    if test $REPLACE_CLOSE = 0; then
+
+
+
+  if test $ac_cv_func_fchdir = no; then
+    HAVE_FCHDIR=0
+  fi
+
+      if test $HAVE_FCHDIR = 0; then
+        REPLACE_CLOSE=1
+      fi
+    fi
+
+
+  if test $REPLACE_CLOSE = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS close.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_CLOSE=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_CLOSE 1" >>confdefs.h
+
+
+
+
+
+printf "%s\n" "#define GNULIB_CLOSE_STREAM 1" >>confdefs.h
+
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "closedir" "ac_cv_func_closedir"
+if test "x$ac_cv_func_closedir" = xyes
+then :
+  printf "%s\n" "#define HAVE_CLOSEDIR 1" >>confdefs.h
+
+fi
+
+  if test $ac_cv_func_closedir = no; then
+    HAVE_CLOSEDIR=0
+  fi
+
+
+
+
+  if test $ac_cv_func_fchdir = no; then
+    HAVE_FCHDIR=0
+  fi
+
+    if test $HAVE_FCHDIR = 0; then
+      if test $HAVE_CLOSEDIR = 1; then
+        REPLACE_CLOSEDIR=1
+      fi
+    fi
+
+    case $host_os,$HAVE_CLOSEDIR in
+    os2*,1)
+      REPLACE_CLOSEDIR=1;;
+  esac
+
+  if test $HAVE_CLOSEDIR = 0 || test $REPLACE_CLOSEDIR = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS closedir.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_CLOSEDIR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_CLOSEDIR 1" >>confdefs.h
+
+
+
+
+  if test "x$lispdir" = x; then
+    lispdir='${datarootdir}/emacs/site-lisp'
+
+  fi
+    if test "x$runstatedir" = x; then
+    runstatedir='${localstatedir}/run'
+
+  fi
+
+      pkglibexecdir='${libexecdir}/${PACKAGE}'
+
+
+
+
+
+
+
+
+  :
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for d_ino member in directory struct" >&5
+printf %s "checking for d_ino member in directory struct... " >&6; }
+if test ${gl_cv_struct_dirent_d_ino+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                            # Guess yes on glibc systems with Linux kernel.
+              linux*-gnu*)  gl_cv_struct_dirent_d_ino="guessing yes" ;;
+                            # Guess yes on musl systems with Linux kernel.
+              linux*-musl*) gl_cv_struct_dirent_d_ino="guessing yes" ;;
+                            # Guess no on native Windows.
+              mingw*)       gl_cv_struct_dirent_d_ino="guessing no" ;;
+                            # If we don't know, obey --enable-cross-guesses.
+              *)            gl_cv_struct_dirent_d_ino="$gl_cross_guess_normal" ;;
+            esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+             #include <sys/stat.h>
+             #include <dirent.h>
+
+int
+main (void)
+{
+DIR *dp = opendir (".");
+             struct dirent *e;
+             struct stat st;
+             if (! dp)
+               return 1;
+             e = readdir (dp);
+             if (! e)
+               { closedir (dp); return 2; }
+             if (lstat (e->d_name, &st) != 0)
+               { closedir (dp); return 3; }
+             if (e->d_ino != st.st_ino)
+               { closedir (dp); return 4; }
+             closedir (dp);
+             return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_struct_dirent_d_ino=yes
+else $as_nop
+  gl_cv_struct_dirent_d_ino=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_struct_dirent_d_ino" >&5
+printf "%s\n" "$gl_cv_struct_dirent_d_ino" >&6; }
+   case "$gl_cv_struct_dirent_d_ino" in
+     *yes)
+
+printf "%s\n" "#define D_INO_IN_DIRENT 1" >>confdefs.h
+
+       ;;
+   esac
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for d_type member in directory struct" >&5
+printf %s "checking for d_type member in directory struct... " >&6; }
+if test ${gl_cv_struct_dirent_d_type+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <dirent.h>
+
+int
+main (void)
+{
+struct dirent dp; dp.d_type = 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_struct_dirent_d_type=yes
+else $as_nop
+  gl_cv_struct_dirent_d_type=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_struct_dirent_d_type" >&5
+printf "%s\n" "$gl_cv_struct_dirent_d_type" >&6; }
+   if test $gl_cv_struct_dirent_d_type = yes; then
+
+printf "%s\n" "#define HAVE_STRUCT_DIRENT_D_TYPE 1" >>confdefs.h
+
+   fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "dirfd" "ac_cv_func_dirfd"
+if test "x$ac_cv_func_dirfd" = xyes
+then :
+  printf "%s\n" "#define HAVE_DIRFD 1" >>confdefs.h
+
+fi
+
+  ac_fn_check_decl "$LINENO" "dirfd" "ac_cv_have_decl_dirfd" "#include <sys/types.h>
+      #include <dirent.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_dirfd" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_DIRFD $ac_have_decl" >>confdefs.h
+
+  if test $ac_cv_have_decl_dirfd = no; then
+    HAVE_DECL_DIRFD=0
+  fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether dirfd is a macro" >&5
+printf %s "checking whether dirfd is a macro... " >&6; }
+if test ${gl_cv_func_dirfd_macro+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <dirent.h>
+#ifdef dirfd
+ dirent_header_defines_dirfd
+#endif
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "dirent_header_defines_dirfd" >/dev/null 2>&1
+then :
+  gl_cv_func_dirfd_macro=yes
+else $as_nop
+  gl_cv_func_dirfd_macro=no
+fi
+rm -rf conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_dirfd_macro" >&5
+printf "%s\n" "$gl_cv_func_dirfd_macro" >&6; }
+
+  # Use the replacement if we have no function or macro with that name,
+  # or if OS/2 kLIBC whose dirfd() does not work.
+  # Replace only if the system declares dirfd already.
+  case $ac_cv_func_dirfd,$gl_cv_func_dirfd_macro,$host_os,$ac_cv_have_decl_dirfd in
+    no,no,*,yes | *,*,os2*,yes)
+      REPLACE_DIRFD=1
+
+printf "%s\n" "#define REPLACE_DIRFD 1" >>confdefs.h
+;;
+  esac
+
+  if test $ac_cv_func_dirfd = no && test $gl_cv_func_dirfd_macro = no \
+     || test $REPLACE_DIRFD = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS dirfd.$ac_objext"
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to get the file descriptor associated with an open DIR*" >&5
+printf %s "checking how to get the file descriptor associated with an open DIR*... " >&6; }
+if test ${gl_cv_sys_dir_fd_member_name+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      dirfd_save_CFLAGS=$CFLAGS
+      for ac_expr in d_fd dd_fd; do
+
+        CFLAGS="$CFLAGS -DDIR_FD_MEMBER_NAME=$ac_expr"
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+           #include <sys/types.h>
+           #include <dirent.h>
+int
+main (void)
+{
+DIR *dir_p = opendir("."); (void) dir_p->DIR_FD_MEMBER_NAME;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  dir_fd_found=yes
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+        CFLAGS=$dirfd_save_CFLAGS
+        test "$dir_fd_found" = yes && break
+      done
+      test "$dir_fd_found" = yes || ac_expr=no_such_member
+
+      gl_cv_sys_dir_fd_member_name=$ac_expr
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_sys_dir_fd_member_name" >&5
+printf "%s\n" "$gl_cv_sys_dir_fd_member_name" >&6; }
+  if test $gl_cv_sys_dir_fd_member_name != no_such_member; then
+
+printf "%s\n" "#define DIR_FD_MEMBER_NAME $gl_cv_sys_dir_fd_member_name" >>confdefs.h
+
+  fi
+
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_DIRFD=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_DIRFD 1" >>confdefs.h
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether // is distinct from /" >&5
+printf %s "checking whether // is distinct from /... " >&6; }
+if test ${gl_cv_double_slash_root+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+   if test x"$cross_compiling" = xyes ; then
+        # When cross-compiling, there is no way to tell whether // is special
+        # short of a list of hosts.  However, the only known hosts to date
+        # that have a distinct // are Apollo DomainOS (too old to port to),
+        # Cygwin, and z/OS.  If anyone knows of another system for which // has
+        # special semantics and is distinct from /, please report it to
+        # <bug-gnulib@gnu.org>.
+        case $host in
+          *-cygwin | i370-ibm-openedition)
+            gl_cv_double_slash_root=yes ;;
+          *)
+            # Be optimistic and assume that / and // are the same when we
+            # don't know.
+            gl_cv_double_slash_root='unknown, assuming no' ;;
+        esac
+      else
+        set x `ls -di / // 2>/dev/null`
+        if test "$2" = "$4" && wc //dev/null >/dev/null 2>&1; then
+          gl_cv_double_slash_root=no
+        else
+          gl_cv_double_slash_root=yes
+        fi
+      fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_double_slash_root" >&5
+printf "%s\n" "$gl_cv_double_slash_root" >&6; }
+  if test "$gl_cv_double_slash_root" = yes; then
+
+printf "%s\n" "#define DOUBLE_SLASH_IS_DISTINCT_ROOT 1" >>confdefs.h
+
+  fi
+
+
+
+
+
+    if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+      REPLACE_DUP=1
+    fi
+
+
+
+
+
+  if test $ac_cv_func_fchdir = no; then
+    HAVE_FCHDIR=0
+  fi
+
+    if test $HAVE_FCHDIR = 0; then
+      REPLACE_DUP=1
+    fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether dup works" >&5
+printf %s "checking whether dup works... " >&6; }
+if test ${gl_cv_func_dup_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                 # Guess no on native Windows.
+         mingw*) gl_cv_func_dup_works="guessing no" ;;
+         *)      gl_cv_func_dup_works="guessing yes" ;;
+       esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <unistd.h>
+                         #include <fcntl.h>
+                         #include <errno.h>
+
+
+$gl_mda_defines
+
+int
+main (void)
+{
+/* On OS/2 kLIBC, dup does not work on a directory fd.  */
+           int fd = open (".", O_RDONLY);
+           return fd < 0 ? 1 : dup (fd) < 0 ? 2 : 0;
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_dup_works=yes
+else $as_nop
+  gl_cv_func_dup_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_dup_works" >&5
+printf "%s\n" "$gl_cv_func_dup_works" >&6; }
+  case "$gl_cv_func_dup_works" in
+    *yes) ;;
+    *)
+      REPLACE_DUP=1
+      ;;
+  esac
+
+  if test $REPLACE_DUP = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS dup.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_DUP=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_DUP 1" >>confdefs.h
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether dup2 works" >&5
+printf %s "checking whether dup2 works... " >&6; }
+if test ${gl_cv_func_dup2_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+         mingw*) # on this platform, dup2 always returns 0 for success
+           gl_cv_func_dup2_works="guessing no" ;;
+         cygwin*) # on cygwin 1.5.x, dup2(1,1) returns 0
+           gl_cv_func_dup2_works="guessing no" ;;
+         aix* | freebsd*)
+                 # on AIX 7.1 and FreeBSD 6.1, dup2 (1,toobig) gives EMFILE,
+                 # not EBADF.
+           gl_cv_func_dup2_works="guessing no" ;;
+         haiku*) # on Haiku alpha 2, dup2(1, 1) resets FD_CLOEXEC.
+           gl_cv_func_dup2_works="guessing no" ;;
+         *-android*) # implemented using dup3(), which fails if oldfd == newfd
+           gl_cv_func_dup2_works="guessing no" ;;
+         os2*) # on OS/2 kLIBC, dup2() does not work on a directory fd.
+           gl_cv_func_dup2_works="guessing no" ;;
+         *) gl_cv_func_dup2_works="guessing yes" ;;
+       esac
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+       #include <errno.h>
+           #include <fcntl.h>
+           #include <limits.h>
+           #include <sys/resource.h>
+           #include <unistd.h>
+
+
+$gl_mda_defines
+
+           #ifndef RLIM_SAVED_CUR
+           # define RLIM_SAVED_CUR RLIM_INFINITY
+           #endif
+           #ifndef RLIM_SAVED_MAX
+           # define RLIM_SAVED_MAX RLIM_INFINITY
+           #endif
+
+int
+main (void)
+{
+int result = 0;
+           int bad_fd = INT_MAX;
+           struct rlimit rlim;
+           if (getrlimit (RLIMIT_NOFILE, &rlim) == 0
+               && 0 <= rlim.rlim_cur && rlim.rlim_cur <= INT_MAX
+               && rlim.rlim_cur != RLIM_INFINITY
+               && rlim.rlim_cur != RLIM_SAVED_MAX
+               && rlim.rlim_cur != RLIM_SAVED_CUR)
+             bad_fd = rlim.rlim_cur;
+           #ifdef FD_CLOEXEC
+             if (fcntl (1, F_SETFD, FD_CLOEXEC) == -1)
+               result |= 1;
+           #endif
+           if (dup2 (1, 1) != 1)
+             result |= 2;
+           #ifdef FD_CLOEXEC
+             if (fcntl (1, F_GETFD) != FD_CLOEXEC)
+               result |= 4;
+           #endif
+           close (0);
+           if (dup2 (0, 0) != -1)
+             result |= 8;
+           /* Many gnulib modules require POSIX conformance of EBADF.  */
+           if (dup2 (2, bad_fd) == -1 && errno != EBADF)
+             result |= 16;
+           /* Flush out some cygwin core dumps.  */
+           if (dup2 (2, -1) != -1 || errno != EBADF)
+             result |= 32;
+           dup2 (2, 255);
+           dup2 (2, 256);
+           /* On OS/2 kLIBC, dup2() does not work on a directory fd.  */
+           {
+             int fd = open (".", O_RDONLY);
+             if (fd == -1)
+               result |= 64;
+             else if (dup2 (fd, fd + 1) == -1)
+               result |= 128;
+             close (fd);
+           }
+           return result;
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_dup2_works=yes
+else $as_nop
+  gl_cv_func_dup2_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_dup2_works" >&5
+printf "%s\n" "$gl_cv_func_dup2_works" >&6; }
+  case "$gl_cv_func_dup2_works" in
+    *yes) ;;
+    *)
+      REPLACE_DUP2=1
+      ac_fn_c_check_func "$LINENO" "setdtablesize" "ac_cv_func_setdtablesize"
+if test "x$ac_cv_func_setdtablesize" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETDTABLESIZE 1" >>confdefs.h
+
+fi
+
+      ;;
+  esac
+
+
+
+
+  if test $ac_cv_func_fchdir = no; then
+    HAVE_FCHDIR=0
+  fi
+
+    if test $HAVE_FCHDIR = 0; then
+      REPLACE_DUP2=1
+    fi
+
+
+  if test $REPLACE_DUP2 = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS dup2.$ac_objext"
+
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_DUP2=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_DUP2 1" >>confdefs.h
+
+
+
+
+
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for error_at_line" >&5
+printf %s "checking for error_at_line... " >&6; }
+if test ${ac_cv_lib_error_at_line+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <error.h>
+int
+main (void)
+{
+error_at_line (0, 0, "", 0, "an error occurred");
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_error_at_line=yes
+else $as_nop
+  ac_cv_lib_error_at_line=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_error_at_line" >&5
+printf "%s\n" "$ac_cv_lib_error_at_line" >&6; }
+
+  if test $ac_cv_lib_error_at_line = no; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS error.$ac_objext"
+
+
+
+  :
+
+  fi
+
+
+  XGETTEXT_EXTRA_OPTIONS="$XGETTEXT_EXTRA_OPTIONS --flag=error:3:c-format"
+
+
+
+  XGETTEXT_EXTRA_OPTIONS="$XGETTEXT_EXTRA_OPTIONS --flag=error_at_line:5:c-format"
+
+
+
+
+
+
+
+  if test $ac_cv_have_decl_fchdir = no; then
+    HAVE_DECL_FCHDIR=0
+  fi
+
+
+  if test $HAVE_FCHDIR = 0; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS fchdir.$ac_objext"
+
+    :
+
+printf "%s\n" "#define REPLACE_FCHDIR 1" >>confdefs.h
+
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether open can visit directories" >&5
+printf %s "checking whether open can visit directories... " >&6; }
+if test ${gl_cv_func_open_directory_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                             # Guess yes on Linux systems.
+            linux-* | linux) gl_cv_func_open_directory_works="guessing yes" ;;
+                             # Guess yes on glibc systems.
+            *-gnu* | gnu*)   gl_cv_func_open_directory_works="guessing yes" ;;
+                             # Guess no on native Windows.
+            mingw*)          gl_cv_func_open_directory_works="guessing no" ;;
+                             # If we don't know, obey --enable-cross-guesses.
+            *)               gl_cv_func_open_directory_works="$gl_cross_guess_normal" ;;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <fcntl.h>
+
+
+$gl_mda_defines
+
+int
+main (void)
+{
+return open(".", O_RDONLY) < 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_open_directory_works=yes
+else $as_nop
+  gl_cv_func_open_directory_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_open_directory_works" >&5
+printf "%s\n" "$gl_cv_func_open_directory_works" >&6; }
+    case "$gl_cv_func_open_directory_works" in
+      *yes) ;;
+      *)
+
+printf "%s\n" "#define REPLACE_OPEN_DIRECTORY 1" >>confdefs.h
+
+        ;;
+    esac
+  fi
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FCHDIR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FCHDIR 1" >>confdefs.h
+
+
+
+
+
+
+
+
+  if test $ac_cv_func_fcntl = no; then
+
+
+
+  if test $ac_cv_func_fcntl = no; then
+    HAVE_FCNTL=0
+  else
+    REPLACE_FCNTL=1
+  fi
+
+  else
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether fcntl handles F_DUPFD correctly" >&5
+printf %s "checking whether fcntl handles F_DUPFD correctly... " >&6; }
+if test ${gl_cv_func_fcntl_f_dupfd_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case $host_os in
+            aix* | cygwin* | haiku*)
+               gl_cv_func_fcntl_f_dupfd_works="guessing no" ;;
+            *) gl_cv_func_fcntl_f_dupfd_works="guessing yes" ;;
+          esac
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <errno.h>
+              #include <fcntl.h>
+              #include <limits.h>
+              #include <sys/resource.h>
+              #include <unistd.h>
+
+
+$gl_mda_defines
+
+              #ifndef RLIM_SAVED_CUR
+              # define RLIM_SAVED_CUR RLIM_INFINITY
+              #endif
+              #ifndef RLIM_SAVED_MAX
+              # define RLIM_SAVED_MAX RLIM_INFINITY
+              #endif
+
+int
+main (void)
+{
+int result = 0;
+              int bad_fd = INT_MAX;
+              struct rlimit rlim;
+              if (getrlimit (RLIMIT_NOFILE, &rlim) == 0
+                  && 0 <= rlim.rlim_cur && rlim.rlim_cur <= INT_MAX
+                  && rlim.rlim_cur != RLIM_INFINITY
+                  && rlim.rlim_cur != RLIM_SAVED_MAX
+                  && rlim.rlim_cur != RLIM_SAVED_CUR)
+                bad_fd = rlim.rlim_cur;
+              if (fcntl (0, F_DUPFD, -1) != -1) result |= 1;
+              if (errno != EINVAL) result |= 2;
+              if (fcntl (0, F_DUPFD, bad_fd) != -1) result |= 4;
+              if (errno != EINVAL) result |= 8;
+              /* On OS/2 kLIBC, F_DUPFD does not work on a directory fd */
+              {
+                int fd;
+                fd = open (".", O_RDONLY);
+                if (fd == -1)
+                  result |= 16;
+                else if (fcntl (fd, F_DUPFD, STDERR_FILENO + 1) == -1)
+                  result |= 32;
+
+                close (fd);
+              }
+              return result;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_fcntl_f_dupfd_works=yes
+else $as_nop
+  gl_cv_func_fcntl_f_dupfd_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_fcntl_f_dupfd_works" >&5
+printf "%s\n" "$gl_cv_func_fcntl_f_dupfd_works" >&6; }
+    case $gl_cv_func_fcntl_f_dupfd_works in
+      *yes) ;;
+      *)
+
+
+  if test $ac_cv_func_fcntl = no; then
+    HAVE_FCNTL=0
+  else
+    REPLACE_FCNTL=1
+  fi
+
+
+printf "%s\n" "#define FCNTL_DUPFD_BUGGY 1" >>confdefs.h
+ ;;
+    esac
+
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether fcntl understands F_DUPFD_CLOEXEC" >&5
+printf %s "checking whether fcntl understands F_DUPFD_CLOEXEC... " >&6; }
+if test ${gl_cv_func_fcntl_f_dupfd_cloexec+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                     # Guess no on NetBSD.
+            netbsd*) gl_cv_func_fcntl_f_dupfd_cloexec="guessing no" ;;
+            *)       gl_cv_func_fcntl_f_dupfd_cloexec="$gl_cross_guess_normal" ;;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <fcntl.h>
+              #include <unistd.h>
+              int main (int argc, char *argv[])
+              {
+                if (argc == 1)
+                  /* parent process */
+                  {
+                    if (fcntl (1, F_DUPFD_CLOEXEC, 10) < 0)
+                      return 1;
+                    return execl ("./conftest", "./conftest", "child", NULL);
+                  }
+                else
+                  /* child process */
+                  return (fcntl (10, F_GETFL) < 0 ? 0 : 42);
+              }
+
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#ifdef __linux__
+/* The Linux kernel only added F_DUPFD_CLOEXEC in 2.6.24, so we always replace
+   it to support the semantics on older kernels that failed with EINVAL.  */
+choke me
+#endif
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_fcntl_f_dupfd_cloexec=yes
+else $as_nop
+  gl_cv_func_fcntl_f_dupfd_cloexec="needs runtime check"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+else $as_nop
+  gl_cv_func_fcntl_f_dupfd_cloexec=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_fcntl_f_dupfd_cloexec" >&5
+printf "%s\n" "$gl_cv_func_fcntl_f_dupfd_cloexec" >&6; }
+    case "$gl_cv_func_fcntl_f_dupfd_cloexec" in
+      *yes) ;;
+      *)
+
+
+  if test $ac_cv_func_fcntl = no; then
+    HAVE_FCNTL=0
+  else
+    REPLACE_FCNTL=1
+  fi
+
+                        ;;
+    esac
+  fi
+
+
+
+
+  if test $ac_cv_func_fchdir = no; then
+    HAVE_FCHDIR=0
+  fi
+
+    if test $HAVE_FCHDIR = 0; then
+
+
+
+  if test $ac_cv_func_fcntl = no; then
+    HAVE_FCNTL=0
+  else
+    REPLACE_FCNTL=1
+  fi
+
+    fi
+
+
+  if test $HAVE_FCNTL = 0 || test $REPLACE_FCNTL = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS fcntl.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FCNTL=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FCNTL 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+printf "%s\n" "#define GNULIB_FCNTL_SAFER 1" >>confdefs.h
+
+
+
+
+printf "%s\n" "#define GNULIB_FD_SAFER_FLAG 1" >>confdefs.h
+
+
+
+
+
+
+
+    ac_fn_check_decl "$LINENO" "fdopendir" "ac_cv_have_decl_fdopendir" "
+#include <dirent.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_fdopendir" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_FDOPENDIR $ac_have_decl" >>confdefs.h
+if test $ac_have_decl = 1
+then :
+
+else $as_nop
+  HAVE_DECL_FDOPENDIR=0
+fi
+
+
+  if test $ac_cv_func_fdopendir = no; then
+    HAVE_FDOPENDIR=0
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether fdopendir works" >&5
+printf %s "checking whether fdopendir works... " >&6; }
+if test ${gl_cv_func_fdopendir_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                     # Guess yes on glibc systems.
+            *-gnu*)  gl_cv_func_fdopendir_works="guessing yes" ;;
+                     # Guess yes on musl systems.
+            *-musl*) gl_cv_func_fdopendir_works="guessing yes" ;;
+                     # If we don't know, obey --enable-cross-guesses.
+            *)       gl_cv_func_fdopendir_works="$gl_cross_guess_normal" ;;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+
+$gl_mda_defines
+
+#if !HAVE_DECL_FDOPENDIR
+extern
+# ifdef __cplusplus
+"C"
+# endif
+DIR *fdopendir (int);
+#endif
+
+int
+main (void)
+{
+int result = 0;
+              int fd = open ("conftest.c", O_RDONLY);
+              if (fd < 0) result |= 1;
+              if (fdopendir (fd)) result |= 2;
+              if (close (fd)) result |= 4;
+              return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_fdopendir_works=yes
+else $as_nop
+  gl_cv_func_fdopendir_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_fdopendir_works" >&5
+printf "%s\n" "$gl_cv_func_fdopendir_works" >&6; }
+    case "$gl_cv_func_fdopendir_works" in
+      *yes) ;;
+      *)
+        REPLACE_FDOPENDIR=1
+        ;;
+    esac
+  fi
+
+  if test $HAVE_FDOPENDIR = 0 || test $REPLACE_FDOPENDIR = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS fdopendir.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FDOPENDIR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FDOPENDIR 1" >>confdefs.h
+
+
+
+
+
+printf "%s\n" "#define GNULIB_FDOPENDIR 1" >>confdefs.h
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for flexible array member" >&5
+printf %s "checking for flexible array member... " >&6; }
+if test ${ac_cv_c_flexmember+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+            #include <stdio.h>
+            #include <stddef.h>
+            struct m { struct m *next, **list; char name[]; };
+            struct s { struct s *p; struct m *m; int n; double d[]; };
+int
+main (void)
+{
+int m = getchar ();
+            size_t nbytes = offsetof (struct s, d) + m * sizeof (double);
+            nbytes += sizeof (struct s) - 1;
+            nbytes -= nbytes % sizeof (struct s);
+            struct s *p = malloc (nbytes);
+            p->p = p;
+            p->m = NULL;
+            p->d[0] = 0.0;
+            return p->d != (double *) NULL;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_c_flexmember=yes
+else $as_nop
+  ac_cv_c_flexmember=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_flexmember" >&5
+printf "%s\n" "$ac_cv_c_flexmember" >&6; }
+  if test $ac_cv_c_flexmember = yes; then
+
+printf "%s\n" "#define FLEXIBLE_ARRAY_MEMBER /**/" >>confdefs.h
+
+  else
+    printf "%s\n" "#define FLEXIBLE_ARRAY_MEMBER 1" >>confdefs.h
+
+  fi
+
+
+
+
+
+     gl_fnmatch_required_lowercase=`
+    echo $gl_fnmatch_required | LC_ALL=C tr '[A-Z]' '[a-z]'
+  `
+
+  if test $ac_cv_func_fnmatch = no; then
+    HAVE_FNMATCH=0
+  else
+    gl_fnmatch_cache_var="gl_cv_func_fnmatch_${gl_fnmatch_required_lowercase}"
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working $gl_fnmatch_required fnmatch" >&5
+printf %s "checking for working $gl_fnmatch_required fnmatch... " >&6; }
+if eval test \${$gl_fnmatch_cache_var+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+                                     if test $gl_fnmatch_required = GNU; then
+         gl_fnmatch_gnu_start=
+         gl_fnmatch_gnu_end=
+       else
+         gl_fnmatch_gnu_start='#if 0'
+         gl_fnmatch_gnu_end='#endif'
+       fi
+       if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                     # Guess yes on musl systems.
+            *-musl*) eval "$gl_fnmatch_cache_var=\"guessing yes\"" ;;
+                     # Guess no otherwise, even on glibc systems.
+            *)       eval "$gl_fnmatch_cache_var=\"guessing no\"" ;;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <fnmatch.h>
+              static int
+              y (char const *pattern, char const *string, int flags)
+              {
+                return fnmatch (pattern, string, flags) == 0;
+              }
+              static int
+              n (char const *pattern, char const *string, int flags)
+              {
+                return fnmatch (pattern, string, flags) == FNM_NOMATCH;
+              }
+
+int
+main (void)
+{
+char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]";
+              char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]";
+              static char const A_1[] = { 'A' - 1, 0 };
+              static char const A01[] = { 'A' + 1, 0 };
+              static char const a_1[] = { 'a' - 1, 0 };
+              static char const a01[] = { 'a' + 1, 0 };
+              static char const bs_1[] = { '\\\\' - 1, 0 };
+              static char const bs01[] = { '\\\\' + 1, 0 };
+              int result = 0;
+              if (!n ("a*", "", 0))
+                return 1;
+              if (!y ("a*", "abc", 0))
+                return 1;
+              if (!y ("[/b", "[/b", 0)) /*"]]"*/ /* glibc Bugzilla bug 12378 */
+                return 1;
+              if (!n ("d*/*1", "d/s/1", FNM_PATHNAME))
+                return 2;
+              if (!y ("a\\\\bc", "abc", 0))
+                return 3;
+              if (!n ("a\\\\bc", "abc", FNM_NOESCAPE))
+                return 3;
+              if (!y ("*x", ".x", 0))
+                return 4;
+              if (!n ("*x", ".x", FNM_PERIOD))
+                return 4;
+              if (!y (Apat, "\\\\", 0))
+                return 5;
+              if (!y (Apat, "A", 0))
+                return 5;
+              if (!y (apat, "\\\\", 0))
+                return 5;
+              if (!y (apat, "a", 0))
+                return 5;
+              if (!(n (Apat, A_1, 0) == ('A' < '\\\\')))
+                return 5;
+              if (!(n (apat, a_1, 0) == ('a' < '\\\\')))
+                return 5;
+              if (!(y (Apat, A01, 0) == ('A' < '\\\\')))
+                return 5;
+              if (!(y (apat, a01, 0) == ('a' < '\\\\')))
+                return 5;
+              if (!(y (Apat, bs_1, 0) == ('A' < '\\\\')))
+                return 5;
+              if (!(y (apat, bs_1, 0) == ('a' < '\\\\')))
+                return 5;
+              if (!(n (Apat, bs01, 0) == ('A' < '\\\\')))
+                return 5;
+              if (!(n (apat, bs01, 0) == ('a' < '\\\\')))
+                return 5;
+              $gl_fnmatch_gnu_start
+              if (!y ("xxXX", "xXxX", FNM_CASEFOLD))
+                result |= 8;
+              if (!y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH))
+                result |= 16;
+              if (!n ("d*/*1", "d/s/1", FNM_FILE_NAME))
+                result |= 32;
+              if (!y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR))
+                result |= 64;
+              if (!y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR))
+                result |= 64;
+              if (!y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR))
+                result |= 64;
+              $gl_fnmatch_gnu_end
+              return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  eval "$gl_fnmatch_cache_var=yes"
+else $as_nop
+  eval "$gl_fnmatch_cache_var=no"
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+eval ac_res=\$$gl_fnmatch_cache_var
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+    eval "gl_fnmatch_result=\"\$$gl_fnmatch_cache_var\""
+    case "$gl_fnmatch_result" in
+      *yes) ;;
+      *) REPLACE_FNMATCH=1 ;;
+    esac
+  fi
+  if test $HAVE_FNMATCH = 0 || test $REPLACE_FNMATCH = 1; then
+
+
+
+
+
+
+  FNMATCH_H='fnmatch.h'
+   if test -n "$FNMATCH_H"; then
+  GL_GENERATE_FNMATCH_H_TRUE=
+  GL_GENERATE_FNMATCH_H_FALSE='#'
+else
+  GL_GENERATE_FNMATCH_H_TRUE='#'
+  GL_GENERATE_FNMATCH_H_FALSE=
+fi
+
+
+  fi
+
+  if test $HAVE_FNMATCH = 0 || test $REPLACE_FNMATCH = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS fnmatch.$ac_objext"
+
+
+
+
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FNMATCH=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FNMATCH 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+  case "$host_os" in
+    mingw* | pw*)
+            REPLACE_FOPEN=1
+            gl_cv_func_fopen_slash="guessing no"
+      ;;
+    *)
+                  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether fopen recognizes a trailing slash" >&5
+printf %s "checking whether fopen recognizes a trailing slash... " >&6; }
+if test ${gl_cv_func_fopen_slash+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+          if test "$cross_compiling" = yes
+then :
+
+             case "$host_os" in
+               aix* | hpux* | solaris2.[0-9] | solaris2.[0-9].*)
+                 gl_cv_func_fopen_slash="guessing no" ;;
+               *)
+                 gl_cv_func_fopen_slash="guessing yes" ;;
+             esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stddef.h>
+#include <stdio.h>
+int main ()
+{
+  FILE *fp = fopen ("conftest.sl/", "w");
+  int result = (fp != NULL);
+  if (fp != NULL)
+    fclose (fp);
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_fopen_slash=yes
+else $as_nop
+  gl_cv_func_fopen_slash=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+          rm -f conftest.sl
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_fopen_slash" >&5
+printf "%s\n" "$gl_cv_func_fopen_slash" >&6; }
+      ;;
+  esac
+  case "$gl_cv_func_fopen_slash" in
+    *no)
+
+printf "%s\n" "#define FOPEN_TRAILING_SLASH_BUG 1" >>confdefs.h
+
+      REPLACE_FOPEN=1
+      ;;
+  esac
+
+  if test $REPLACE_FOPEN = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS fopen.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FOPEN=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FOPEN 1" >>confdefs.h
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether fopen supports the mode character 'x'" >&5
+printf %s "checking whether fopen supports the mode character 'x'... " >&6; }
+if test ${gl_cv_func_fopen_mode_x+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  rm -f conftest.x
+     if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+          # Guess yes on glibc and musl systems.
+          linux*-gnu* | gnu* | kfreebsd*-gnu | *-musl*)
+            gl_cv_func_fopen_mode_x="guessing yes" ;;
+          # If we don't know, obey --enable-cross-guesses.
+          *)
+            gl_cv_func_fopen_mode_x="$gl_cross_guess_normal" ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#include <errno.h>
+int main ()
+{
+  FILE *fp;
+  fp = fopen ("conftest.x", "w");
+  fclose (fp);
+  fp = fopen ("conftest.x", "wx");
+  if (fp != NULL)
+    /* 'x' ignored */
+    return 1;
+  else if (errno == EEXIST)
+    return 0;
+  else
+    /* 'x' rejected */
+    return 2;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_fopen_mode_x=yes
+else $as_nop
+  gl_cv_func_fopen_mode_x=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+     rm -f conftest.x
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_fopen_mode_x" >&5
+printf "%s\n" "$gl_cv_func_fopen_mode_x" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether fopen supports the mode character 'e'" >&5
+printf %s "checking whether fopen supports the mode character 'e'... " >&6; }
+if test ${gl_cv_func_fopen_mode_e+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  echo foo > conftest.x
+     if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+          # Guess yes on glibc and musl systems.
+          linux*-gnu* | gnu* | kfreebsd*-gnu | *-musl*)
+            gl_cv_func_fopen_mode_e="guessing yes" ;;
+          # Guess no on native Windows.
+          mingw*)
+            gl_cv_func_fopen_mode_e="guessing no" ;;
+          # If we don't know, obey --enable-cross-guesses.
+          *)
+            gl_cv_func_fopen_mode_e="$gl_cross_guess_normal" ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+
+
+$gl_mda_defines
+
+int main ()
+{
+  FILE *fp = fopen ("conftest.x", "re");
+  if (fp != NULL)
+    {
+      if (fcntl (fileno (fp), F_GETFD) & FD_CLOEXEC)
+        return 0;
+      else
+        /* 'e' ignored */
+        return 1;
+    }
+  else
+    /* 'e' rejected */
+    return 2;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_fopen_mode_e=yes
+else $as_nop
+  gl_cv_func_fopen_mode_e=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+     rm -f conftest.x
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_fopen_mode_e" >&5
+printf "%s\n" "$gl_cv_func_fopen_mode_e" >&6; }
+  case "$gl_cv_func_fopen_mode_x" in
+    *no) REPLACE_FOPEN=1 ;;
+  esac
+  case "$gl_cv_func_fopen_mode_e" in
+    *no) REPLACE_FOPEN=1 ;;
+  esac
+
+  if test $REPLACE_FOPEN = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS fopen.$ac_objext"
+
+    :
+  fi
+
+
+printf "%s\n" "#define GNULIB_FOPEN_GNU 1" >>confdefs.h
+
+
+
+
+  fp_headers='
+    #include <stdio.h>
+    #if HAVE_STDIO_EXT_H
+    # include <stdio_ext.h>
+    #endif
+  '
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for __fpending" >&5
+printf %s "checking for __fpending... " >&6; }
+if test ${gl_cv_func___fpending+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$fp_headers
+int
+main (void)
+{
+return ! __fpending (stdin);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_func___fpending=yes
+else $as_nop
+  gl_cv_func___fpending=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func___fpending" >&5
+printf "%s\n" "$gl_cv_func___fpending" >&6; }
+  if test $gl_cv_func___fpending = yes; then
+    ac_fn_check_decl "$LINENO" "__fpending" "ac_cv_have_decl___fpending" "$fp_headers
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl___fpending" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL___FPENDING $ac_have_decl" >>confdefs.h
+
+  fi
+
+  if test $gl_cv_func___fpending = no; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS fpending.$ac_objext"
+
+  fi
+
+
+
+                          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether free is known to preserve errno" >&5
+printf %s "checking whether free is known to preserve errno... " >&6; }
+if test ${gl_cv_func_free_preserves_errno+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+int
+main (void)
+{
+#if 2 < __GLIBC__ + (33 <= __GLIBC_MINOR__)
+            #elif defined __OpenBSD__
+            #elif defined __sun
+            #else
+              #error "'free' is not known to preserve errno"
+            #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_free_preserves_errno=yes
+else $as_nop
+  gl_cv_func_free_preserves_errno=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_free_preserves_errno" >&5
+printf "%s\n" "$gl_cv_func_free_preserves_errno" >&6; }
+
+  case $gl_cv_func_free_preserves_errno in
+   *yes)
+
+printf "%s\n" "#define HAVE_FREE_POSIX 1" >>confdefs.h
+
+    ;;
+   *) REPLACE_FREE=1 ;;
+  esac
+
+  if test $REPLACE_FREE = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS free.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FREE_POSIX=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FREE_POSIX 1" >>confdefs.h
+
+
+
+
+
+
+
+  case "$host_os" in
+    mingw* | solaris*)
+                        REPLACE_FSTAT=1
+      ;;
+  esac
+
+
+
+
+
+  if test $ac_cv_func_fchdir = no; then
+    HAVE_FCHDIR=0
+  fi
+
+    if test $HAVE_FCHDIR = 0; then
+      case "$gl_cv_func_open_directory_works" in
+        *yes) ;;
+        *)
+          REPLACE_FSTAT=1
+          ;;
+      esac
+    fi
+
+
+  if test $REPLACE_FSTAT = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS fstat.$ac_objext"
+
+    case "$host_os" in
+      mingw*)
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS stat-w32.$ac_objext"
+
+        ;;
+    esac
+
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FSTAT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FSTAT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+  if test $ac_cv_func_fstatat = no; then
+    HAVE_FSTATAT=0
+  else
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether fstatat (..., 0) works" >&5
+printf %s "checking whether fstatat (..., 0) works... " >&6; }
+if test ${gl_cv_func_fstatat_zero_flag+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+            aix*) gl_cv_func_fstatat_zero_flag="guessing no";;
+            *)    gl_cv_func_fstatat_zero_flag="guessing yes";;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+              #include <fcntl.h>
+              #include <sys/stat.h>
+              int
+              main (void)
+              {
+                struct stat a;
+                return fstatat (AT_FDCWD, ".", &a, 0) != 0;
+              }
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_fstatat_zero_flag=yes
+else $as_nop
+  gl_cv_func_fstatat_zero_flag=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_fstatat_zero_flag" >&5
+printf "%s\n" "$gl_cv_func_fstatat_zero_flag" >&6; }
+
+    case $gl_cv_func_fstatat_zero_flag+$gl_cv_func_lstat_dereferences_slashed_symlink in
+    *yes+*yes) ;;
+    *) REPLACE_FSTATAT=1 ;;
+    esac
+
+    case $host_os in
+      solaris*)
+        REPLACE_FSTATAT=1 ;;
+    esac
+
+    case $REPLACE_FSTATAT,$gl_cv_func_fstatat_zero_flag in
+      1,*yes)
+
+printf "%s\n" "#define HAVE_WORKING_FSTATAT_ZERO_FLAG 1" >>confdefs.h
+
+         ;;
+    esac
+  fi
+
+  if test $HAVE_FSTATAT = 0 || test $REPLACE_FSTATAT = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS fstatat.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FSTATAT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FSTATAT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+  case $ac_cv_func_openat+$gl_cv_func_lstat_dereferences_slashed_symlink+$gl_cv_macro_O_CLOEXEC in
+  yes+*yes+yes)
+    ;;
+  yes+*)
+    # Solaris 10 lacks O_CLOEXEC.
+    # Solaris 9 has *at functions, but uniformly mishandles trailing
+    # slash in all of them.
+    REPLACE_OPENAT=1
+    ;;
+  *)
+    HAVE_OPENAT=0
+    ;;
+  esac
+
+
+
+      if test "$ac_cv_func_fstatfs,$ac_cv_header_sys_vfs_h" = yes,yes; then
+    ac_fn_c_check_member "$LINENO" "struct statfs" "f_type" "ac_cv_member_struct_statfs_f_type" "$ac_includes_default
+        #include <sys/vfs.h>
+
+"
+if test "x$ac_cv_member_struct_statfs_f_type" = xyes
+then :
+
+printf "%s\n" "#define HAVE_STRUCT_STATFS_F_TYPE 1" >>confdefs.h
+
+
+fi
+
+    if test "$ac_cv_member_struct_statfs_f_type" = yes; then
+      ac_fn_c_check_type "$LINENO" "__fsword_t" "ac_cv_type___fsword_t" "$ac_includes_default
+          #include <sys/vfs.h>
+
+"
+if test "x$ac_cv_type___fsword_t" = xyes
+then :
+
+printf "%s\n" "#define HAVE___FSWORD_T 1" >>confdefs.h
+
+
+fi
+
+    fi
+  fi
+
+  ac_fn_c_check_func "$LINENO" "fts_open" "ac_cv_func_fts_open"
+if test "x$ac_cv_func_fts_open" = xyes
+then :
+
+fi
+
+  if test $ac_cv_func_fts_open = yes; then
+
+printf "%s\n" "#define fts_open rpl_fts_open" >>confdefs.h
+
+
+printf "%s\n" "#define fts_close rpl_fts_close" >>confdefs.h
+
+
+printf "%s\n" "#define fts_read rpl_fts_read" >>confdefs.h
+
+
+printf "%s\n" "#define fts_set rpl_fts_set" >>confdefs.h
+
+
+printf "%s\n" "#define fts_children rpl_fts_children" >>confdefs.h
+
+
+printf "%s\n" "#define fts_cross_check rpl_fts_cross_check" >>confdefs.h
+
+  fi
+
+
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS fts.$ac_objext"
+
+
+
+
+
+
+  case $gl_cv_func_getcwd_null,$gl_cv_func_getcwd_posix_signature in
+  *yes,yes) ;;
+  *)
+        REPLACE_GETCWD=1
+    ;;
+  esac
+
+  if test $REPLACE_GETCWD = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS getcwd-lgpl.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_GETCWD=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_GETCWD 1" >>confdefs.h
+
+
+
+
+
+
+
+
+  if test $ac_cv_func_getdtablesize = yes &&
+     test $ac_cv_have_decl_getdtablesize = yes; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether getdtablesize works" >&5
+printf %s "checking whether getdtablesize works... " >&6; }
+if test ${gl_cv_func_getdtablesize_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+                                                   case "$host_os" in
+         vms*) gl_cv_func_getdtablesize_works="no (limitation)" ;;
+         *)
+                                                       if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                cygwin*) # on cygwin 1.5.25, getdtablesize() automatically grows
+                  gl_cv_func_getdtablesize_works="guessing no" ;;
+                *) gl_cv_func_getdtablesize_works="guessing yes" ;;
+              esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+             #include <unistd.h>
+
+
+$gl_mda_defines
+
+
+int
+main (void)
+{
+int size = getdtablesize();
+                 if (dup2 (0, getdtablesize()) != -1)
+                   return 1;
+                 if (size != getdtablesize())
+                   return 2;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_getdtablesize_works=yes
+else $as_nop
+  gl_cv_func_getdtablesize_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+           ;;
+       esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_getdtablesize_works" >&5
+printf "%s\n" "$gl_cv_func_getdtablesize_works" >&6; }
+    case "$gl_cv_func_getdtablesize_works" in
+      *yes | "no (limitation)") ;;
+      *) REPLACE_GETDTABLESIZE=1 ;;
+    esac
+  else
+    HAVE_GETDTABLESIZE=0
+  fi
+
+  if test $HAVE_GETDTABLESIZE = 0 || test $REPLACE_GETDTABLESIZE = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS getdtablesize.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_GETDTABLESIZE=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_GETDTABLESIZE 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+    REPLACE_GETOPT=0
+    if test -n "$gl_replace_getopt"; then
+      REPLACE_GETOPT=1
+    fi
+
+  if test $REPLACE_GETOPT = 1; then
+
+
+  if test $ac_cv_header_sys_cdefs_h = yes; then
+    HAVE_SYS_CDEFS_H=1
+  else
+    HAVE_SYS_CDEFS_H=0
+  fi
+
+
+
+printf "%s\n" "#define __GETOPT_PREFIX rpl_" >>confdefs.h
+
+  GETOPT_H=getopt.h
+  GETOPT_CDEFS_H=getopt-cdefs.h
+
+
+
+  fi
+
+  if test $REPLACE_GETOPT = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS getopt.$ac_objext"
+
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS getopt1.$ac_objext"
+
+
+
+
+
+
+
+  GL_GNULIB_UNISTD_H_GETOPT=1
+
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_GETOPT_POSIX=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_GETOPT_POSIX 1" >>confdefs.h
+
+
+
+
+
+
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getpagesize" >&5
+printf %s "checking for getpagesize... " >&6; }
+if test ${gl_cv_func_getpagesize+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <unistd.h>
+int
+main (void)
+{
+return getpagesize();
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_func_getpagesize=yes
+else $as_nop
+  gl_cv_func_getpagesize=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_getpagesize" >&5
+printf "%s\n" "$gl_cv_func_getpagesize" >&6; }
+
+  if test $gl_cv_func_getpagesize = no; then
+    HAVE_GETPAGESIZE=0
+    ac_fn_c_check_header_compile "$LINENO" "OS.h" "ac_cv_header_OS_h" "$ac_includes_default"
+if test "x$ac_cv_header_OS_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_OS_H 1" >>confdefs.h
+
+fi
+
+    if test $ac_cv_header_OS_h = yes; then
+      HAVE_OS_H=1
+    fi
+    ac_fn_c_check_header_compile "$LINENO" "sys/param.h" "ac_cv_header_sys_param_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_param_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_PARAM_H 1" >>confdefs.h
+
+fi
+
+    if test $ac_cv_header_sys_param_h = yes; then
+      HAVE_SYS_PARAM_H=1
+    fi
+  fi
+  case "$host_os" in
+    mingw*)
+      REPLACE_GETPAGESIZE=1
+      ;;
+  esac
+      ac_fn_check_decl "$LINENO" "getpagesize" "ac_cv_have_decl_getpagesize" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_getpagesize" = xyes
+then :
+
+else $as_nop
+  HAVE_DECL_GETPAGESIZE=0
+fi
+
+  if test $REPLACE_GETPAGESIZE = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS getpagesize.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_GETPAGESIZE=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_GETPAGESIZE 1" >>confdefs.h
+
+
+
+
+
+
+  ac_found=0
+  ac_fn_check_decl "$LINENO" "program_invocation_name" "ac_cv_have_decl_program_invocation_name" "#include <errno.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_program_invocation_name" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_PROGRAM_INVOCATION_NAME $ac_have_decl" >>confdefs.h
+if test $ac_have_decl = 1
+then :
+  ac_found=1
+fi
+
+  ac_fn_check_decl "$LINENO" "program_invocation_short_name" "ac_cv_have_decl_program_invocation_short_name" "#include <errno.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_program_invocation_short_name" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME $ac_have_decl" >>confdefs.h
+if test $ac_have_decl = 1
+then :
+  ac_found=1
+fi
+
+  ac_fn_check_decl "$LINENO" "__argv" "ac_cv_have_decl___argv" "#include <stdlib.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl___argv" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL___ARGV $ac_have_decl" >>confdefs.h
+if test $ac_have_decl = 1
+then :
+  ac_found=1
+fi
+
+
+  # Incur the cost of this test only if none of the above worked.
+  if test $ac_found = 0; then
+    # On OpenBSD 5.1, using the global __progname variable appears to be
+    # the only way to implement getprogname.
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether __progname is defined in default libraries" >&5
+printf %s "checking whether __progname is defined in default libraries... " >&6; }
+if test ${gl_cv_var___progname+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+        gl_cv_var___progname=
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern char *__progname;
+int
+main (void)
+{
+return *__progname;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_var___progname=yes
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_var___progname" >&5
+printf "%s\n" "$gl_cv_var___progname" >&6; }
+    if test "$gl_cv_var___progname" = yes; then
+
+printf "%s\n" "#define HAVE_VAR___PROGNAME 1" >>confdefs.h
+
+    fi
+  fi
+
+
+
+  # Autoconf 2.61a.99 and earlier don't support linking a file only
+  # in VPATH builds.  But since GNUmakefile is for maintainer use
+  # only, it does not matter if we skip the link with older autoconf.
+  # Automake 1.10.1 and earlier try to remove GNUmakefile in non-VPATH
+  # builds, so use a shell variable to bypass this.
+  GNUmakefile=GNUmakefile
+  ac_config_links="$ac_config_links $GNUmakefile:$GNUmakefile"
+
+
+  LIB_HARD_LOCALE="$LIB_SETLOCALE_NULL"
+
+
+
+
+  :
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_ICONV=1
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  if test "$am_cv_func_iconv" = yes; then
+
+
+
+
+
+
+  ICONV_H='iconv.h'
+   if test -n "$ICONV_H"; then
+  GL_GENERATE_ICONV_H_TRUE=
+  GL_GENERATE_ICONV_H_FALSE='#'
+else
+  GL_GENERATE_ICONV_H_TRUE='#'
+  GL_GENERATE_ICONV_H_FALSE=
+fi
+
+
+            cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+      #include <iconv.h>
+      #if defined _LIBICONV_VERSION || (defined __GLIBC__ && !defined __UCLIBC__)
+       gnu_iconv
+      #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "gnu_iconv" >/dev/null 2>&1
+then :
+  gl_func_iconv_gnu=yes
+else $as_nop
+  gl_func_iconv_gnu=no
+fi
+rm -rf conftest*
+
+    if test $gl_func_iconv_gnu = no; then
+      iconv_flavor=
+      case "$host_os" in
+        aix*)         iconv_flavor=ICONV_FLAVOR_AIX ;;
+        irix*)        iconv_flavor=ICONV_FLAVOR_IRIX ;;
+        hpux*)        iconv_flavor=ICONV_FLAVOR_HPUX ;;
+        osf*)         iconv_flavor=ICONV_FLAVOR_OSF ;;
+        solaris*)     iconv_flavor=ICONV_FLAVOR_SOLARIS ;;
+        openedition*) iconv_flavor=ICONV_FLAVOR_ZOS ;;
+      esac
+      if test -n "$iconv_flavor"; then
+
+printf "%s\n" "#define ICONV_FLAVOR $iconv_flavor" >>confdefs.h
+
+
+
+
+
+
+
+
+  ICONV_H='iconv.h'
+   if test -n "$ICONV_H"; then
+  GL_GENERATE_ICONV_H_TRUE=
+  GL_GENERATE_ICONV_H_FALSE='#'
+else
+  GL_GENERATE_ICONV_H_TRUE='#'
+  GL_GENERATE_ICONV_H_FALSE=
+fi
+
+
+  REPLACE_ICONV_OPEN=1
+
+      fi
+    fi
+
+  fi
+
+  if test $REPLACE_ICONV_OPEN = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS iconv_open.$ac_objext"
+
+  fi
+  if test $REPLACE_ICONV = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS iconv.$ac_objext"
+
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS iconv_close.$ac_objext"
+
+  fi
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler generally respects inline" >&5
+printf %s "checking whether the compiler generally respects inline... " >&6; }
+if test ${gl_cv_c_inline_effective+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test $ac_cv_c_inline = no; then
+       gl_cv_c_inline_effective=no
+     else
+                                          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+#ifdef __NO_INLINE__
+               #error "inline is not effective"
+             #endif
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_c_inline_effective=yes
+else $as_nop
+  gl_cv_c_inline_effective=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+     fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_c_inline_effective" >&5
+printf "%s\n" "$gl_cv_c_inline_effective" >&6; }
+  if test $gl_cv_c_inline_effective = yes; then
+
+printf "%s\n" "#define HAVE_INLINE 1" >>confdefs.h
+
+  fi
+
+
+
+
+
+
+
+
+
+
+         case $host_os in
+    mingw*) REPLACE_ISATTY=1 ;;
+  esac
+
+  if test $REPLACE_ISATTY = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS isatty.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_ISATTY=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_ISATTY 1" >>confdefs.h
+
+
+
+
+
+
+
+
+  if test $ac_cv_func_isblank = no; then
+    HAVE_ISBLANK=0
+  fi
+
+  if test $HAVE_ISBLANK = 0; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS isblank.$ac_objext"
+
+  fi
+
+
+printf "%s\n" "#define GNULIB_ISBLANK 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_ISBLANK=1
+
+
+
+
+
+
+
+
+
+  ac_fn_check_decl "$LINENO" "iswblank" "ac_cv_have_decl_iswblank" "
+    #include <wchar.h>
+    #include <wctype.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_iswblank" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_ISWBLANK $ac_have_decl" >>confdefs.h
+
+  if test $ac_cv_func_iswblank = no; then
+    HAVE_ISWBLANK=0
+    if test $ac_cv_have_decl_iswblank = yes; then
+      REPLACE_ISWBLANK=1
+    fi
+  fi
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+        :
+  else
+    if test $HAVE_ISWBLANK = 0 || test $REPLACE_ISWBLANK = 1; then
+            :
+    fi
+  fi
+
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+    :
+  else
+    if test $HAVE_ISWBLANK = 0 || test $REPLACE_ISWBLANK = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS iswblank.$ac_objext"
+
+    fi
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_ISWBLANK=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_ISWBLANK 1" >>confdefs.h
+
+
+
+
+
+
+
+  if test $HAVE_WCTYPE_T = 0 || test $GNULIBHEADERS_OVERRIDE_WINT_T = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS iswctype.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_ISWCTYPE=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_ISWCTYPE 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+        REPLACE_ISWDIGIT="$REPLACE_ISWCNTRL"
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether iswdigit is ISO C compliant" >&5
+printf %s "checking whether iswdigit is ISO C compliant... " >&6; }
+if test ${gl_cv_func_iswdigit_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                     case "$host_os" in
+         # Guess no on FreeBSD, NetBSD, Solaris, native Windows.
+         freebsd* | dragonfly* | netbsd* | solaris* | mingw*)
+           gl_cv_func_iswdigit_works="guessing no" ;;
+         # Guess yes otherwise.
+         *) gl_cv_func_iswdigit_works="guessing yes" ;;
+       esac
+       if test $LOCALE_FR != none || test $LOCALE_JA != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_ZH_CN != none; then
+         if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include <wctype.h>
+
+/* Returns the value of iswdigit for the multibyte character s[0..n-1].  */
+static int
+for_character (const char *s, size_t n)
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  memset (&state, '\0', sizeof (mbstate_t));
+  wc = (wchar_t) 0xBADFACE;
+  ret = mbrtowc (&wc, s, n, &state);
+  if (ret != n)
+    abort ();
+
+  return iswdigit (wc);
+}
+
+int
+main (int argc, char *argv[])
+{
+  int is;
+  int result = 0;
+
+  if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+    {
+      /* This fails on mingw, MSVC 14.  */
+      /* U+00B2 SUPERSCRIPT TWO */
+      is = for_character ("\262", 1);
+      if (!(is == 0))
+        result |= 1;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      /* This fails on NetBSD 8.0.  */
+      /* U+FF11 FULLWIDTH DIGIT ONE */
+      is = for_character ("\243\261", 2);
+      if (!(is == 0))
+        result |= 2;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      /* This fails on FreeBSD 13.0, NetBSD 8.0, MSVC 14.  */
+      /* U+0663 ARABIC-INDIC DIGIT THREE */
+      is = for_character ("\331\243", 2);
+      if (!(is == 0))
+        result |= 4;
+      /* This fails on FreeBSD 13.0, NetBSD 8.0, MSVC 14.  */
+      /* U+FF11 FULLWIDTH DIGIT ONE */
+      is = for_character ("\357\274\221", 3);
+      if (!(is == 0))
+        result |= 8;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      /* This fails on NetBSD 8.0, Solaris 10, Solaris 11.4.  */
+      /* U+FF11 FULLWIDTH DIGIT ONE */
+      is = for_character ("\243\261", 2);
+      if (!(is == 0))
+        result |= 16;
+    }
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_iswdigit_works=yes
+else $as_nop
+  gl_cv_func_iswdigit_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+       fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_iswdigit_works" >&5
+printf "%s\n" "$gl_cv_func_iswdigit_works" >&6; }
+    case "$gl_cv_func_iswdigit_works" in
+      *yes) ;;
+      *) REPLACE_ISWDIGIT=1 ;;
+    esac
+  fi
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+    :
+  else
+    if test $REPLACE_ISWDIGIT = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS iswdigit.$ac_objext"
+
+    fi
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_ISWDIGIT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_ISWDIGIT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+        REPLACE_ISWXDIGIT="$REPLACE_ISWCNTRL"
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether iswxdigit is ISO C compliant" >&5
+printf %s "checking whether iswxdigit is ISO C compliant... " >&6; }
+if test ${gl_cv_func_iswxdigit_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                     case "$host_os" in
+         # Guess no on FreeBSD, NetBSD, Solaris, native Windows.
+         freebsd* | dragonfly* | netbsd* | solaris* | mingw*)
+           gl_cv_func_iswxdigit_works="guessing no" ;;
+         # Guess yes otherwise.
+         *) gl_cv_func_iswxdigit_works="guessing yes" ;;
+       esac
+       if test $LOCALE_JA != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_ZH_CN != none; then
+         if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include <wctype.h>
+
+/* Returns the value of iswxdigit for the multibyte character s[0..n-1].  */
+static int
+for_character (const char *s, size_t n)
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  memset (&state, '\0', sizeof (mbstate_t));
+  wc = (wchar_t) 0xBADFACE;
+  ret = mbrtowc (&wc, s, n, &state);
+  if (ret != n)
+    abort ();
+
+  return iswxdigit (wc);
+}
+
+int
+main (int argc, char *argv[])
+{
+  int is;
+  int result = 0;
+
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      /* This fails on NetBSD 8.0.  */
+      /* U+FF21 FULLWIDTH LATIN CAPITAL LETTER A */
+      is = for_character ("\243\301", 2);
+      if (!(is == 0))
+        result |= 1;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      /* This fails on FreeBSD 13.0.  */
+      /* U+0663 ARABIC-INDIC DIGIT THREE */
+      is = for_character ("\331\243", 2);
+      if (!(is == 0))
+        result |= 2;
+      /* This fails on MSVC 14.  */
+      /* U+FF21 FULLWIDTH LATIN CAPITAL LETTER A */
+      is = for_character ("\357\274\241", 3);
+      if (!(is == 0))
+        result |= 4;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      /* This fails on Solaris 10, Solaris 11.4.  */
+      /* U+FF11 FULLWIDTH DIGIT ONE */
+      is = for_character ("\243\261", 2);
+      if (!(is == 0))
+        result |= 8;
+    }
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_iswxdigit_works=yes
+else $as_nop
+  gl_cv_func_iswxdigit_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+       fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_iswxdigit_works" >&5
+printf "%s\n" "$gl_cv_func_iswxdigit_works" >&6; }
+    case "$gl_cv_func_iswxdigit_works" in
+      *yes) ;;
+      *) REPLACE_ISWXDIGIT=1 ;;
+    esac
+  fi
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+    :
+  else
+    if test $REPLACE_ISWXDIGIT = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS iswxdigit.$ac_objext"
+
+    fi
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_ISWXDIGIT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_ISWXDIGIT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports the __inline keyword" >&5
+printf %s "checking whether the compiler supports the __inline keyword... " >&6; }
+if test ${gl_cv_c___inline+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+typedef int foo_t;
+           static __inline foo_t foo (void) { return 0; }
+int
+main (void)
+{
+return foo ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_c___inline=yes
+else $as_nop
+  gl_cv_c___inline=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_c___inline" >&5
+printf "%s\n" "$gl_cv_c___inline" >&6; }
+  if test $gl_cv_c___inline = yes; then
+
+printf "%s\n" "#define HAVE___INLINE 1" >>confdefs.h
+
+  fi
+
+
+
+
+
+    LOCALCHARSET_TESTS_ENVIRONMENT=
+
+
+
+
+
+
+
+
+
+
+
+  if test $REPLACE_STRUCT_LCONV = 1; then
+    REPLACE_LOCALECONV=1
+  fi
+
+  if test $REPLACE_LOCALECONV = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS localeconv.$ac_objext"
+
+
+  ac_fn_c_check_member "$LINENO" "struct lconv" "decimal_point" "ac_cv_member_struct_lconv_decimal_point" "#include <locale.h>
+"
+if test "x$ac_cv_member_struct_lconv_decimal_point" = xyes
+then :
+
+printf "%s\n" "#define HAVE_STRUCT_LCONV_DECIMAL_POINT 1" >>confdefs.h
+
+
+fi
+
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_LOCALECONV=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_LOCALECONV 1" >>confdefs.h
+
+
+
+
+
+  if test "$gl_threads_api" = posix; then
+    # OSF/1 4.0 and Mac OS X 10.1 lack the pthread_rwlock_t type and the
+    # pthread_rwlock_* functions.
+    has_rwlock=false
+    ac_fn_c_check_type "$LINENO" "pthread_rwlock_t" "ac_cv_type_pthread_rwlock_t" "#include <pthread.h>
+"
+if test "x$ac_cv_type_pthread_rwlock_t" = xyes
+then :
+  has_rwlock=true
+
+printf "%s\n" "#define HAVE_PTHREAD_RWLOCK 1" >>confdefs.h
+
+fi
+
+    if $has_rwlock; then
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthread_rwlock_rdlock prefers a writer to a reader" >&5
+printf %s "checking whether pthread_rwlock_rdlock prefers a writer to a reader... " >&6; }
+if test ${gl_cv_pthread_rwlock_rdlock_prefer_writer+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  save_LIBS="$LIBS"
+     LIBS="$LIBS $LIBMULTITHREAD"
+     if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                         # Guess no on glibc systems.
+          *-gnu* | gnu*) gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no" ;;
+                         # Guess no on musl systems.
+          *-musl*)       gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no" ;;
+                         # Guess no on bionic systems.
+          *-android*)    gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no" ;;
+                         # Guess yes on native Windows with the mingw-w64 winpthreads library.
+                         # Guess no on native Windows with the gnulib windows-rwlock module.
+          mingw*)        if test "$gl_use_threads" = yes || test "$gl_use_threads" = posix; then
+                           gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing yes"
+                         else
+                           gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no"
+                         fi
+                         ;;
+                         # If we don't know, obey --enable-cross-guesses.
+          *)             gl_cv_pthread_rwlock_rdlock_prefer_writer="$gl_cross_guess_normal" ;;
+         esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define SUCCEED() exit (0)
+#define FAILURE() exit (1)
+#define UNEXPECTED(n) (exit (10 + (n)))
+
+/* The main thread creates the waiting writer and the requesting reader threads
+   in the default way; this guarantees that they have the same priority.
+   We can reuse the main thread as first reader thread.  */
+
+static pthread_rwlock_t lock;
+static pthread_t reader1;
+static pthread_t writer;
+static pthread_t reader2;
+static pthread_t timer;
+/* Used to pass control from writer to reader2 and from reader2 to timer,
+   as in a relay race.
+   Passing control from one running thread to another running thread
+   is most likely faster than to create the second thread.  */
+static pthread_mutex_t baton;
+
+static void *
+timer_func (void *ignored)
+{
+  /* Step 13 (can be before or after step 12):
+     The timer thread takes the baton, then waits a moment to make sure
+     it can tell whether the second reader thread is blocked at step 12.  */
+  if (pthread_mutex_lock (&baton))
+    UNEXPECTED (13);
+  usleep (100000);
+  /* By the time we get here, it's clear that the second reader thread is
+     blocked at step 12.  This is the desired behaviour.  */
+  SUCCEED ();
+}
+
+static void *
+reader2_func (void *ignored)
+{
+  int err;
+
+  /* Step 8 (can be before or after step 7):
+     The second reader thread takes the baton, then waits a moment to make sure
+     the writer thread has reached step 7.  */
+  if (pthread_mutex_lock (&baton))
+    UNEXPECTED (8);
+  usleep (100000);
+  /* Step 9: The second reader thread requests the lock.  */
+  err = pthread_rwlock_tryrdlock (&lock);
+  if (err == 0)
+    FAILURE ();
+  else if (err != EBUSY)
+    UNEXPECTED (9);
+  /* Step 10: Launch a timer, to test whether the next call blocks.  */
+  if (pthread_create (&timer, NULL, timer_func, NULL))
+    UNEXPECTED (10);
+  /* Step 11: Release the baton.  */
+  if (pthread_mutex_unlock (&baton))
+    UNEXPECTED (11);
+  /* Step 12: The second reader thread requests the lock.  */
+  err = pthread_rwlock_rdlock (&lock);
+  if (err == 0)
+    FAILURE ();
+  else
+    UNEXPECTED (12);
+}
+
+static void *
+writer_func (void *ignored)
+{
+  /* Step 4: Take the baton, so that the second reader thread does not go ahead
+     too early.  */
+  if (pthread_mutex_lock (&baton))
+    UNEXPECTED (4);
+  /* Step 5: Create the second reader thread.  */
+  if (pthread_create (&reader2, NULL, reader2_func, NULL))
+    UNEXPECTED (5);
+  /* Step 6: Release the baton.  */
+  if (pthread_mutex_unlock (&baton))
+    UNEXPECTED (6);
+  /* Step 7: The writer thread requests the lock.  */
+  if (pthread_rwlock_wrlock (&lock))
+    UNEXPECTED (7);
+  return NULL;
+}
+
+int
+main ()
+{
+  reader1 = pthread_self ();
+
+  /* Step 1: The main thread initializes the lock and the baton.  */
+  if (pthread_rwlock_init (&lock, NULL))
+    UNEXPECTED (1);
+  if (pthread_mutex_init (&baton, NULL))
+    UNEXPECTED (1);
+  /* Step 2: The main thread acquires the lock as a reader.  */
+  if (pthread_rwlock_rdlock (&lock))
+    UNEXPECTED (2);
+  /* Step 3: Create the writer thread.  */
+  if (pthread_create (&writer, NULL, writer_func, NULL))
+    UNEXPECTED (3);
+  /* Job done.  Go to sleep.  */
+  for (;;)
+    {
+      sleep (1);
+    }
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_pthread_rwlock_rdlock_prefer_writer=yes
+else $as_nop
+  gl_cv_pthread_rwlock_rdlock_prefer_writer=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+     LIBS="$save_LIBS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_pthread_rwlock_rdlock_prefer_writer" >&5
+printf "%s\n" "$gl_cv_pthread_rwlock_rdlock_prefer_writer" >&6; }
+  case "$gl_cv_pthread_rwlock_rdlock_prefer_writer" in
+    *yes)
+
+printf "%s\n" "#define HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER 1" >>confdefs.h
+
+      ;;
+  esac
+
+    fi
+    # glibc defines PTHREAD_MUTEX_RECURSIVE as enum, not as a macro.
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+      #include <pthread.h>
+int
+main (void)
+{
+
+#if __FreeBSD__ == 4
+error "No, in FreeBSD 4.0 recursive mutexes actually don't work."
+#elif (defined __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ \
+       && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1070)
+error "No, in Mac OS X < 10.7 recursive mutexes actually don't work."
+#else
+int x = (int)PTHREAD_MUTEX_RECURSIVE;
+return !x;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+printf "%s\n" "#define HAVE_PTHREAD_MUTEX_RECURSIVE 1" >>confdefs.h
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  fi
+  :
+
+
+
+printf "%s\n" "#define GNULIB_LOCK 1" >>confdefs.h
+
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether lseek detects pipes" >&5
+printf %s "checking whether lseek detects pipes... " >&6; }
+if test ${gl_cv_func_lseek_pipe+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case "$host_os" in
+       mingw*)
+                                                               gl_cv_func_lseek_pipe=no
+         ;;
+       *)
+         if test $cross_compiling = no; then
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/types.h> /* for off_t */
+#include <stdio.h> /* for SEEK_CUR */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#else /* on Windows with MSVC */
+# include <io.h>
+#endif
+
+
+$gl_mda_defines
+
+int
+main (void)
+{
+
+  /* Exit with success only if stdin is seekable.  */
+  return lseek (0, (off_t)0, SEEK_CUR) < 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  if test -s conftest$ac_exeext \
+                 && ./conftest$ac_exeext < conftest.$ac_ext \
+                 && test 1 = "`echo hi \
+                   | { ./conftest$ac_exeext; echo $?; cat >/dev/null; }`"; then
+                gl_cv_func_lseek_pipe=yes
+              else
+                gl_cv_func_lseek_pipe=no
+              fi
+
+else $as_nop
+  gl_cv_func_lseek_pipe=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+         else
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#if defined __BEOS__
+/* BeOS mistakenly return 0 when trying to seek on pipes.  */
+  Choke me.
+#endif
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_lseek_pipe=yes
+else $as_nop
+  gl_cv_func_lseek_pipe=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         fi
+         ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_lseek_pipe" >&5
+printf "%s\n" "$gl_cv_func_lseek_pipe" >&6; }
+  if test $gl_cv_func_lseek_pipe = no; then
+    REPLACE_LSEEK=1
+
+printf "%s\n" "#define LSEEK_PIPE_BROKEN 1" >>confdefs.h
+
+  fi
+
+
+  if test $WINDOWS_64_BIT_OFF_T = 1; then
+    REPLACE_LSEEK=1
+  fi
+
+  if test $REPLACE_LSEEK = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS lseek.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_LSEEK=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_LSEEK 1" >>confdefs.h
+
+
+
+
+
+
+
+  if test $ac_cv_func_lstat = yes; then
+
+    case $host_os,$gl_cv_func_lstat_dereferences_slashed_symlink in
+      solaris* | *no)
+        REPLACE_LSTAT=1
+        ;;
+    esac
+  else
+    HAVE_LSTAT=0
+  fi
+
+  if test $REPLACE_LSTAT = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS lstat.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_LSTAT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_LSTAT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+  if test $REPLACE_MALLOC = 0; then
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether malloc (0) returns nonnull" >&5
+printf %s "checking whether malloc (0) returns nonnull... " >&6; }
+if test ${ac_cv_func_malloc_0_nonnull+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+          # Guess yes on platforms where we know the result.
+          *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \
+          | gnu* | *-musl* | midnightbsd* \
+          | hpux* | solaris* | cygwin* | mingw* | msys* )
+            ac_cv_func_malloc_0_nonnull="guessing yes" ;;
+          # If we don't know, obey --enable-cross-guesses.
+          *) ac_cv_func_malloc_0_nonnull="$gl_cross_guess_normal" ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+int
+main (void)
+{
+void *p = malloc (0);
+            int result = !p;
+            free (p);
+            return result;
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  ac_cv_func_malloc_0_nonnull=yes
+else $as_nop
+  ac_cv_func_malloc_0_nonnull=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_malloc_0_nonnull" >&5
+printf "%s\n" "$ac_cv_func_malloc_0_nonnull" >&6; }
+  case $ac_cv_func_malloc_0_nonnull in #(
+  *yes) :
+     ;; #(
+  *) :
+    REPLACE_MALLOC=1 ;;
+esac
+
+  fi
+
+  if test $REPLACE_MALLOC = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS malloc.$ac_objext"
+
+  fi
+
+  if test $REPLACE_MALLOC = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS malloc.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MALLOC_POSIX=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MALLOC_POSIX 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+  :
+
+
+
+
+
+
+
+  if test $ac_cv_func_mbrlen = no; then
+    HAVE_MBRLEN=0
+    ac_fn_check_decl "$LINENO" "mbrlen" "ac_cv_have_decl_mbrlen" "
+      #include <wchar.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_mbrlen" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_MBRLEN $ac_have_decl" >>confdefs.h
+
+    if test $ac_cv_have_decl_mbrlen = yes; then
+                        REPLACE_MBRLEN=1
+    fi
+  else
+                    if test $REPLACE_MBRTOWC = 1; then
+      REPLACE_MBRLEN=1
+    fi
+  fi
+
+  if test $HAVE_MBRLEN = 0 || test $REPLACE_MBRLEN = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS mbrlen.$ac_objext"
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MBRLEN=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MBRLEN 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+        if case "$host_os" in
+       mingw*) true ;;
+       *) test $ac_cv_func_mbsinit = yes ;;
+     esac \
+    && test $ac_cv_func_mbrtowc = yes; then
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc handles incomplete characters" >&5
+printf %s "checking whether mbrtowc handles incomplete characters... " >&6; }
+if test ${gl_cv_func_mbrtowc_incomplete_state+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                     # Guess no on AIX and OSF/1.
+        aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;
+                     # Guess yes otherwise.
+        *)           gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;
+      esac
+      if test $LOCALE_JA != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_incomplete_state=yes
+else $as_nop
+  gl_cv_func_mbrtowc_incomplete_state=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      else
+        if test $LOCALE_FR_UTF8 != none; then
+          if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      const char input[] = "B\303\274\303\237er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_incomplete_state=yes
+else $as_nop
+  gl_cv_func_mbrtowc_incomplete_state=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        fi
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_incomplete_state" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_incomplete_state" >&6; }
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc works as well as mbtowc" >&5
+printf %s "checking whether mbrtowc works as well as mbtowc... " >&6; }
+if test ${gl_cv_func_mbrtowc_sanitycheck+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                    # Guess no on Solaris 8.
+        solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;
+                    # Guess yes otherwise.
+        *)          gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;
+      esac
+      if test $LOCALE_ZH_CN != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  /* This fails on Solaris 8:
+     mbrtowc returns 2, and sets wc to 0x00F0.
+     mbtowc returns 4 (correct) and sets wc to 0x5EDC.  */
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 6, &state) != 4
+          && mbtowc (&wc, input + 3, 6) == 4)
+        return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_sanitycheck=yes
+else $as_nop
+  gl_cv_func_mbrtowc_sanitycheck=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_sanitycheck" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_sanitycheck" >&6; }
+
+    REPLACE_MBSTATE_T=0
+    case "$gl_cv_func_mbrtowc_incomplete_state" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+    case "$gl_cv_func_mbrtowc_sanitycheck" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+  else
+    REPLACE_MBSTATE_T=1
+  fi
+
+
+
+  if test $ac_cv_func_mbrtowc = no; then
+    HAVE_MBRTOWC=0
+    ac_fn_check_decl "$LINENO" "mbrtowc" "ac_cv_have_decl_mbrtowc" "
+      #include <wchar.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_mbrtowc" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_MBRTOWC $ac_have_decl" >>confdefs.h
+
+    if test $ac_cv_have_decl_mbrtowc = yes; then
+                        REPLACE_MBRTOWC=1
+    fi
+  else
+    if test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_MBRTOWC=1
+    else
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc handles a NULL pwc argument" >&5
+printf %s "checking whether mbrtowc handles a NULL pwc argument... " >&6; }
+if test ${gl_cv_func_mbrtowc_null_arg1+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                  # Guess no on Solaris.
+        solaris*) gl_cv_func_mbrtowc_null_arg1="guessing no" ;;
+                  # Guess yes otherwise.
+        *)        gl_cv_func_mbrtowc_null_arg1="guessing yes" ;;
+      esac
+      if test $LOCALE_FR_UTF8 != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  int result = 0;
+
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      char input[] = "\303\237er";
+      mbstate_t state;
+      wchar_t wc;
+      size_t ret;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      wc = (wchar_t) 0xBADFACE;
+      ret = mbrtowc (&wc, input, 5, &state);
+      if (ret != 2)
+        result |= 1;
+      if (!mbsinit (&state))
+        result |= 2;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      ret = mbrtowc (NULL, input, 5, &state);
+      if (ret != 2) /* Solaris 7 fails here: ret is -1.  */
+        result |= 4;
+      if (!mbsinit (&state))
+        result |= 8;
+    }
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_null_arg1=yes
+else $as_nop
+  gl_cv_func_mbrtowc_null_arg1=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_null_arg1" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_null_arg1" >&6; }
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc handles a NULL string argument" >&5
+printf %s "checking whether mbrtowc handles a NULL string argument... " >&6; }
+if test ${gl_cv_func_mbrtowc_null_arg2+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+              # Guess no on OSF/1.
+        osf*) gl_cv_func_mbrtowc_null_arg2="guessing no" ;;
+              # Guess yes otherwise.
+        *)    gl_cv_func_mbrtowc_null_arg2="guessing yes" ;;
+      esac
+      if test $LOCALE_FR_UTF8 != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      mbstate_t state;
+      wchar_t wc;
+      int ret;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      wc = (wchar_t) 0xBADFACE;
+      mbrtowc (&wc, NULL, 5, &state);
+      /* Check that wc was not modified.  */
+      if (wc != (wchar_t) 0xBADFACE)
+        return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_null_arg2=yes
+else $as_nop
+  gl_cv_func_mbrtowc_null_arg2=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_null_arg2" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_null_arg2" >&6; }
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc has a correct return value" >&5
+printf %s "checking whether mbrtowc has a correct return value... " >&6; }
+if test ${gl_cv_func_mbrtowc_retval+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                                   # Guess no on HP-UX, Solaris, native Windows.
+        hpux* | solaris* | mingw*) gl_cv_func_mbrtowc_retval="guessing no" ;;
+                                   # Guess yes otherwise.
+        *)                         gl_cv_func_mbrtowc_retval="guessing yes" ;;
+      esac
+      if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none \
+         || { case "$host_os" in mingw*) true;; *) false;; esac; }; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  int result = 0;
+  int found_some_locale = 0;
+  /* This fails on Solaris.  */
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      char input[] = "B\303\274\303\237er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        {
+          input[1] = '\0';
+          if (mbrtowc (&wc, input + 2, 5, &state) != 1)
+            result |= 1;
+        }
+      found_some_locale = 1;
+    }
+  /* This fails on HP-UX 11.11.  */
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        {
+          input[1] = '\0';
+          if (mbrtowc (&wc, input + 2, 5, &state) != 2)
+            result |= 2;
+        }
+      found_some_locale = 1;
+    }
+  /* This fails on native Windows.  */
+  if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL)
+    {
+      char input[] = "<\223\372\226\173\214\352>"; /* "<日本語>" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
+        {
+          input[3] = '\0';
+          if (mbrtowc (&wc, input + 4, 4, &state) != 1)
+            result |= 4;
+        }
+      found_some_locale = 1;
+    }
+  if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL)
+    {
+      char input[] = "<\244\351\245\273\273\171>"; /* "<日本語>" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
+        {
+          input[3] = '\0';
+          if (mbrtowc (&wc, input + 4, 4, &state) != 1)
+            result |= 8;
+        }
+      found_some_locale = 1;
+    }
+  if (setlocale (LC_ALL, "Chinese_China.936") != NULL)
+    {
+      char input[] = "<\310\325\261\276\325\132>"; /* "<日本語>" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
+        {
+          input[3] = '\0';
+          if (mbrtowc (&wc, input + 4, 4, &state) != 1)
+            result |= 16;
+        }
+      found_some_locale = 1;
+    }
+  return (found_some_locale ? result : 77);
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_retval=yes
+else $as_nop
+  if test $? != 77; then
+             gl_cv_func_mbrtowc_retval=no
+           fi
+
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_retval" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_retval" >&6; }
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc returns 0 when parsing a NUL character" >&5
+printf %s "checking whether mbrtowc returns 0 when parsing a NUL character... " >&6; }
+if test ${gl_cv_func_mbrtowc_nul_retval+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                       # Guess no on Solaris 8 and 9.
+        solaris2.[89]) gl_cv_func_mbrtowc_nul_retval="guessing no" ;;
+                       # Guess yes otherwise.
+        *)             gl_cv_func_mbrtowc_nul_retval="guessing yes" ;;
+      esac
+      if test $LOCALE_ZH_CN != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  /* This fails on Solaris 8 and 9.  */
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "", 1, &state) != 0)
+        return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_nul_retval=yes
+else $as_nop
+  gl_cv_func_mbrtowc_nul_retval=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_nul_retval" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_nul_retval" >&6; }
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc stores incomplete characters" >&5
+printf %s "checking whether mbrtowc stores incomplete characters... " >&6; }
+if test ${gl_cv_func_mbrtowc_stores_incomplete+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+               case "$host_os" in
+               # Guess yes on native Windows.
+       mingw*) gl_cv_func_mbrtowc_stores_incomplete="guessing yes" ;;
+       *)      gl_cv_func_mbrtowc_stores_incomplete="guessing no" ;;
+     esac
+     case "$host_os" in
+       mingw*)
+         if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  int result = 0;
+  if (setlocale (LC_ALL, "French_France.65001") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\303", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        result |= 1;
+    }
+  if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\226", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        result |= 2;
+    }
+  if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\245", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        result |= 4;
+    }
+  if (setlocale (LC_ALL, "Chinese_China.936") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\261", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        result |= 8;
+    }
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_stores_incomplete=no
+else $as_nop
+  gl_cv_func_mbrtowc_stores_incomplete=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+         ;;
+       *)
+
+         if test $LOCALE_FR_UTF8 != none; then
+           if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\303", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        return 1;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_stores_incomplete=no
+else $as_nop
+  gl_cv_func_mbrtowc_stores_incomplete=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+         fi
+         ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_stores_incomplete" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_stores_incomplete" >&6; }
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc works on empty input" >&5
+printf %s "checking whether mbrtowc works on empty input... " >&6; }
+if test ${gl_cv_func_mbrtowc_empty_input+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                              # Guess no on AIX and glibc systems.
+        aix* | *-gnu* | gnu*) gl_cv_func_mbrtowc_empty_input="guessing no" ;;
+                              # Guess yes on native Windows.
+        mingw*)               gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
+        *)                    gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
+      esac
+      if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+           #include <wchar.h>
+           static wchar_t wc;
+           static mbstate_t mbs;
+           int
+           main (void)
+           {
+             return mbrtowc (&wc, "", 0, &mbs) != (size_t) -2;
+           }
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_empty_input=yes
+else $as_nop
+  gl_cv_func_mbrtowc_empty_input=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_empty_input" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_empty_input" >&6; }
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the C locale is free of encoding errors" >&5
+printf %s "checking whether the C locale is free of encoding errors... " >&6; }
+if test ${gl_cv_func_mbrtowc_C_locale_sans_EILSEQ+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+               gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="$gl_cross_guess_normal"
+
+     if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                 # Guess yes on native Windows.
+         mingw*) gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="guessing yes" ;;
+       esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+            #include <locale.h>
+            #include <wchar.h>
+
+int
+main (void)
+{
+
+            int i;
+            char *locale = setlocale (LC_ALL, "C");
+            if (! locale)
+              return 2;
+            for (i = CHAR_MIN; i <= CHAR_MAX; i++)
+              {
+                char c = i;
+                wchar_t wc;
+                mbstate_t mbs = { 0, };
+                size_t ss = mbrtowc (&wc, &c, 1, &mbs);
+                if (1 < ss)
+                  return 3;
+              }
+            return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_C_locale_sans_EILSEQ=yes
+else $as_nop
+  gl_cv_func_mbrtowc_C_locale_sans_EILSEQ=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_C_locale_sans_EILSEQ" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_C_locale_sans_EILSEQ" >&6; }
+
+      case "$gl_cv_func_mbrtowc_null_arg1" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_NULL_ARG1_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_null_arg2" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_NULL_ARG2_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_retval" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_RETVAL_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_nul_retval" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_NUL_RETVAL_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_stores_incomplete" in
+        *no) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_STORES_INCOMPLETE_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_empty_input" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_EMPTY_INPUT_BUG 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_C_locale_sans_EILSEQ" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define MBRTOWC_IN_C_LOCALE_MAYBE_EILSEQ 1" >>confdefs.h
+
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+    fi
+  fi
+  if test $REPLACE_MBSTATE_T = 1; then
+    case "$host_os" in
+      mingw*) LIB_MBRTOWC= ;;
+      *)
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether imported symbols can be declared weak" >&5
+printf %s "checking whether imported symbols can be declared weak... " >&6; }
+if test ${gl_cv_have_weak+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_cv_have_weak=no
+          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern void xyzzy ();
+#pragma weak xyzzy
+int
+main (void)
+{
+xyzzy();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_have_weak=maybe
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+     if test $gl_cv_have_weak = maybe; then
+                     if test "$cross_compiling" = yes
+then :
+                      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __ELF__
+             Extensible Linking Format
+             #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Extensible Linking Format" >/dev/null 2>&1
+then :
+  gl_cv_have_weak="guessing yes"
+else $as_nop
+  gl_cv_have_weak="guessing no"
+fi
+rm -rf conftest*
+
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#pragma weak fputs
+int main ()
+{
+  return (fputs == NULL);
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_have_weak=yes
+else $as_nop
+  gl_cv_have_weak=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+     fi
+          case " $LDFLAGS " in
+       *" -static "*) gl_cv_have_weak=no ;;
+     esac
+                    case "$gl_cv_have_weak" in
+       *yes)
+         case "$host_os" in
+           freebsd* | dragonfly* | midnightbsd*)
+             : > conftest1.c
+             $CC $CPPFLAGS $CFLAGS $LDFLAGS -fPIC -shared -o libempty.so conftest1.c -lpthread >&5 2>&1
+             cat <<EOF > conftest2.c
+#include <pthread.h>
+#pragma weak pthread_mutexattr_gettype
+int main ()
+{
+  return (pthread_mutexattr_gettype != NULL);
+}
+EOF
+             $CC $CPPFLAGS $CFLAGS $LDFLAGS -o conftest conftest2.c libempty.so >&5 2>&1 \
+               || gl_cv_have_weak=no
+             rm -f conftest1.c libempty.so conftest2.c conftest
+             ;;
+         esac
+         ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_have_weak" >&5
+printf "%s\n" "$gl_cv_have_weak" >&6; }
+  case "$gl_cv_have_weak" in
+    *yes)
+
+printf "%s\n" "#define HAVE_WEAK_SYMBOLS 1" >>confdefs.h
+
+      ;;
+  esac
+
+        case "$gl_cv_have_weak" in
+          *yes) LIB_MBRTOWC= ;;
+          *)    LIB_MBRTOWC="$LIBPTHREAD" ;;
+        esac
+        ;;
+    esac
+  else
+    LIB_MBRTOWC=
+  fi
+
+
+  if test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS mbrtowc.$ac_objext"
+
+    if test $REPLACE_MBSTATE_T = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS lc-charset-dispatch.$ac_objext"
+
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS mbtowc-lock.$ac_objext"
+
+
+
+
+  CFLAG_VISIBILITY=
+  HAVE_VISIBILITY=0
+  if test -n "$GCC"; then
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the -Werror option is usable" >&5
+printf %s "checking whether the -Werror option is usable... " >&6; }
+if test ${gl_cv_cc_vis_werror+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -Werror"
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_cc_vis_werror=yes
+else $as_nop
+  gl_cv_cc_vis_werror=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+       CFLAGS="$gl_save_CFLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_vis_werror" >&5
+printf "%s\n" "$gl_cv_cc_vis_werror" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for simple visibility declarations" >&5
+printf %s "checking for simple visibility declarations... " >&6; }
+if test ${gl_cv_cc_visibility+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -fvisibility=hidden"
+                                          if test $gl_cv_cc_vis_werror = yes; then
+         CFLAGS="$CFLAGS -Werror"
+       fi
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern __attribute__((__visibility__("hidden"))) int hiddenvar;
+              extern __attribute__((__visibility__("default"))) int exportedvar;
+              extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void);
+              extern __attribute__((__visibility__("default"))) int exportedfunc (void);
+              void dummyfunc (void);
+              int hiddenvar;
+              int exportedvar;
+              int hiddenfunc (void) { return 51; }
+              int exportedfunc (void) { return 1225736919; }
+              void dummyfunc (void) {}
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_cc_visibility=yes
+else $as_nop
+  gl_cv_cc_visibility=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+       CFLAGS="$gl_save_CFLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_visibility" >&5
+printf "%s\n" "$gl_cv_cc_visibility" >&6; }
+    if test $gl_cv_cc_visibility = yes; then
+      CFLAG_VISIBILITY="-fvisibility=hidden"
+      HAVE_VISIBILITY=1
+    fi
+  fi
+
+
+
+printf "%s\n" "#define HAVE_VISIBILITY $HAVE_VISIBILITY" >>confdefs.h
+
+
+
+    fi
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MBRTOWC=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MBRTOWC 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MBSCASECMP=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MBSCASECMP 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+        if case "$host_os" in
+       mingw*) true ;;
+       *) test $ac_cv_func_mbsinit = yes ;;
+     esac \
+    && test $ac_cv_func_mbrtowc = yes; then
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc handles incomplete characters" >&5
+printf %s "checking whether mbrtowc handles incomplete characters... " >&6; }
+if test ${gl_cv_func_mbrtowc_incomplete_state+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                     # Guess no on AIX and OSF/1.
+        aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;
+                     # Guess yes otherwise.
+        *)           gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;
+      esac
+      if test $LOCALE_JA != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_incomplete_state=yes
+else $as_nop
+  gl_cv_func_mbrtowc_incomplete_state=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      else
+        if test $LOCALE_FR_UTF8 != none; then
+          if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      const char input[] = "B\303\274\303\237er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_incomplete_state=yes
+else $as_nop
+  gl_cv_func_mbrtowc_incomplete_state=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        fi
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_incomplete_state" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_incomplete_state" >&6; }
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc works as well as mbtowc" >&5
+printf %s "checking whether mbrtowc works as well as mbtowc... " >&6; }
+if test ${gl_cv_func_mbrtowc_sanitycheck+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                    # Guess no on Solaris 8.
+        solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;
+                    # Guess yes otherwise.
+        *)          gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;
+      esac
+      if test $LOCALE_ZH_CN != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  /* This fails on Solaris 8:
+     mbrtowc returns 2, and sets wc to 0x00F0.
+     mbtowc returns 4 (correct) and sets wc to 0x5EDC.  */
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 6, &state) != 4
+          && mbtowc (&wc, input + 3, 6) == 4)
+        return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_sanitycheck=yes
+else $as_nop
+  gl_cv_func_mbrtowc_sanitycheck=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_sanitycheck" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_sanitycheck" >&6; }
+
+    REPLACE_MBSTATE_T=0
+    case "$gl_cv_func_mbrtowc_incomplete_state" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+    case "$gl_cv_func_mbrtowc_sanitycheck" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+  else
+    REPLACE_MBSTATE_T=1
+  fi
+
+
+
+  if test $ac_cv_func_mbsinit = no; then
+    HAVE_MBSINIT=0
+    ac_fn_check_decl "$LINENO" "mbsinit" "ac_cv_have_decl_mbsinit" "
+      #include <wchar.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_mbsinit" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_MBSINIT $ac_have_decl" >>confdefs.h
+
+    if test $ac_cv_have_decl_mbsinit = yes; then
+                        REPLACE_MBSINIT=1
+    fi
+  else
+    if test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_MBSINIT=1
+    else
+                        case "$host_os" in
+        mingw*) REPLACE_MBSINIT=1 ;;
+      esac
+    fi
+  fi
+
+  if test $HAVE_MBSINIT = 0 || test $REPLACE_MBSINIT = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS mbsinit.$ac_objext"
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MBSINIT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MBSINIT 1" >>confdefs.h
+
+
+
+
+
+
+  if test $ac_cv_func_mbslen = yes; then
+    HAVE_MBSLEN=1
+  else
+    HAVE_MBSLEN=0
+  fi
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MBSLEN=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MBSLEN 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+        if case "$host_os" in
+       mingw*) true ;;
+       *) test $ac_cv_func_mbsinit = yes ;;
+     esac \
+    && test $ac_cv_func_mbrtowc = yes; then
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc handles incomplete characters" >&5
+printf %s "checking whether mbrtowc handles incomplete characters... " >&6; }
+if test ${gl_cv_func_mbrtowc_incomplete_state+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                     # Guess no on AIX and OSF/1.
+        aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;
+                     # Guess yes otherwise.
+        *)           gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;
+      esac
+      if test $LOCALE_JA != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_incomplete_state=yes
+else $as_nop
+  gl_cv_func_mbrtowc_incomplete_state=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      else
+        if test $LOCALE_FR_UTF8 != none; then
+          if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      const char input[] = "B\303\274\303\237er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_incomplete_state=yes
+else $as_nop
+  gl_cv_func_mbrtowc_incomplete_state=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        fi
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_incomplete_state" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_incomplete_state" >&6; }
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc works as well as mbtowc" >&5
+printf %s "checking whether mbrtowc works as well as mbtowc... " >&6; }
+if test ${gl_cv_func_mbrtowc_sanitycheck+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                    # Guess no on Solaris 8.
+        solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;
+                    # Guess yes otherwise.
+        *)          gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;
+      esac
+      if test $LOCALE_ZH_CN != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  /* This fails on Solaris 8:
+     mbrtowc returns 2, and sets wc to 0x00F0.
+     mbtowc returns 4 (correct) and sets wc to 0x5EDC.  */
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 6, &state) != 4
+          && mbtowc (&wc, input + 3, 6) == 4)
+        return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_sanitycheck=yes
+else $as_nop
+  gl_cv_func_mbrtowc_sanitycheck=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_sanitycheck" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_sanitycheck" >&6; }
+
+    REPLACE_MBSTATE_T=0
+    case "$gl_cv_func_mbrtowc_incomplete_state" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+    case "$gl_cv_func_mbrtowc_sanitycheck" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+  else
+    REPLACE_MBSTATE_T=1
+  fi
+
+
+
+  if test $ac_cv_func_mbsrtowcs = no; then
+    HAVE_MBSRTOWCS=0
+    ac_fn_check_decl "$LINENO" "mbsrtowcs" "ac_cv_have_decl_mbsrtowcs" "
+      #include <wchar.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_mbsrtowcs" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_MBSRTOWCS $ac_have_decl" >>confdefs.h
+
+    if test $ac_cv_have_decl_mbsrtowcs = yes; then
+                        REPLACE_MBSRTOWCS=1
+    fi
+  else
+    if test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_MBSRTOWCS=1
+    else
+
+
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbsrtowcs works" >&5
+printf %s "checking whether mbsrtowcs works... " >&6; }
+if test ${gl_cv_func_mbsrtowcs_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                                   # Guess no on HP-UX, Solaris, mingw.
+        hpux* | solaris* | mingw*) gl_cv_func_mbsrtowcs_works="guessing no" ;;
+                                   # Guess yes otherwise.
+        *)                         gl_cv_func_mbsrtowcs_works="guessing yes" ;;
+      esac
+      if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  int result = 0;
+  /* Test whether the function supports a NULL destination argument.
+     This fails on native Windows.  */
+  if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+    {
+      const char input[] = "\337er";
+      const char *src = input;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbsrtowcs (NULL, &src, 1, &state) != 3
+          || src != input)
+        result |= 1;
+    }
+  /* Test whether the function works when started with a conversion state
+     in non-initial state.  This fails on HP-UX 11.11 and Solaris 10.  */
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      const char input[] = "B\303\274\303\237er";
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2))
+        if (!mbsinit (&state))
+          {
+            const char *src = input + 2;
+            if (mbsrtowcs (NULL, &src, 10, &state) != 4)
+              result |= 2;
+          }
+    }
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      const char input[] = "<\306\374\313\334\270\354>";
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (NULL, input + 3, 1, &state) == (size_t)(-2))
+        if (!mbsinit (&state))
+          {
+            const char *src = input + 4;
+            if (mbsrtowcs (NULL, &src, 10, &state) != 3)
+              result |= 4;
+          }
+    }
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      const char input[] = "B\250\271\201\060\211\070er";
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2))
+        if (!mbsinit (&state))
+          {
+            const char *src = input + 2;
+            if (mbsrtowcs (NULL, &src, 10, &state) != 4)
+              result |= 8;
+          }
+    }
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbsrtowcs_works=yes
+else $as_nop
+  gl_cv_func_mbsrtowcs_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbsrtowcs_works" >&5
+printf "%s\n" "$gl_cv_func_mbsrtowcs_works" >&6; }
+
+      case "$gl_cv_func_mbsrtowcs_works" in
+        *yes) ;;
+        *) REPLACE_MBSRTOWCS=1 ;;
+      esac
+    fi
+  fi
+
+  if test $HAVE_MBSRTOWCS = 0 || test $REPLACE_MBSRTOWCS = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS mbsrtowcs.$ac_objext"
+
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS mbsrtowcs-state.$ac_objext"
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MBSRTOWCS=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MBSRTOWCS 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MBSSTR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MBSSTR 1" >>confdefs.h
+
+
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "mbtowc" "ac_cv_func_mbtowc"
+if test "x$ac_cv_func_mbtowc" = xyes
+then :
+  printf "%s\n" "#define HAVE_MBTOWC 1" >>confdefs.h
+
+fi
+
+  if test $ac_cv_func_mbtowc = no; then
+    HAVE_MBTOWC=0
+  else
+    if false; then
+      REPLACE_MBTOWC=1
+    fi
+  fi
+
+  if test $HAVE_MBTOWC = 0 || test $REPLACE_MBTOWC = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS mbtowc.$ac_objext"
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MBTOWC=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MBTOWC 1" >>confdefs.h
+
+
+
+
+
+  :
+
+
+  if test $REPLACE_MEMCHR = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS memchr.$ac_objext"
+
+
+  ac_fn_c_check_header_compile "$LINENO" "bp-sym.h" "ac_cv_header_bp_sym_h" "$ac_includes_default"
+if test "x$ac_cv_header_bp_sym_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_BP_SYM_H 1" >>confdefs.h
+
+fi
+
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MEMCHR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MEMCHR 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "mempcpy" "ac_cv_func_mempcpy"
+if test "x$ac_cv_func_mempcpy" = xyes
+then :
+  printf "%s\n" "#define HAVE_MEMPCPY 1" >>confdefs.h
+
+fi
+
+  if test $ac_cv_func_mempcpy = no; then
+    HAVE_MEMPCPY=0
+  fi
+
+  if test $HAVE_MEMPCPY = 0; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS mempcpy.$ac_objext"
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MEMPCPY=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MEMPCPY 1" >>confdefs.h
+
+
+
+
+
+
+
+
+  if test $ac_cv_have_decl_memrchr = no; then
+    HAVE_DECL_MEMRCHR=0
+  fi
+
+  ac_fn_c_check_func "$LINENO" "memrchr" "ac_cv_func_memrchr"
+if test "x$ac_cv_func_memrchr" = xyes
+then :
+  printf "%s\n" "#define HAVE_MEMRCHR 1" >>confdefs.h
+
+fi
+
+
+  if test $ac_cv_func_memrchr = no; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS memrchr.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_MEMRCHR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_MEMRCHR 1" >>confdefs.h
+
+
+
+
+
+
+
+  if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS msvc-inval.$ac_objext"
+
+  fi
+
+  if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS msvc-nothrow.$ac_objext"
+
+  fi
+
+
+printf "%s\n" "#define GNULIB_MSVC_NOTHROW 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+  if test $ac_cv_func_nl_langinfo = yes; then
+    # On Irix 6.5, YESEXPR is defined, but nl_langinfo(YESEXPR) is broken.
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether YESEXPR works" >&5
+printf %s "checking whether YESEXPR works... " >&6; }
+if test ${gl_cv_func_nl_langinfo_yesexpr_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+
+         case "$host_os" in
+                   # Guess no on irix systems.
+           irix*)  gl_cv_func_nl_langinfo_yesexpr_works="guessing no";;
+                   # Guess yes elsewhere.
+           *)      gl_cv_func_nl_langinfo_yesexpr_works="guessing yes";;
+         esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <langinfo.h>
+
+int
+main (void)
+{
+return !*nl_langinfo(YESEXPR);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_nl_langinfo_yesexpr_works=yes
+else $as_nop
+  gl_cv_func_nl_langinfo_yesexpr_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_nl_langinfo_yesexpr_works" >&5
+printf "%s\n" "$gl_cv_func_nl_langinfo_yesexpr_works" >&6; }
+    case $gl_cv_func_nl_langinfo_yesexpr_works in
+      *yes) FUNC_NL_LANGINFO_YESEXPR_WORKS=1 ;;
+      *)    FUNC_NL_LANGINFO_YESEXPR_WORKS=0 ;;
+    esac
+
+printf "%s\n" "#define FUNC_NL_LANGINFO_YESEXPR_WORKS $FUNC_NL_LANGINFO_YESEXPR_WORKS" >>confdefs.h
+
+    # On Solaris 10 and Solaris 11.3, nl_langinfo is not multithread-safe.
+    case "$host_os" in
+      solaris*) NL_LANGINFO_MTSAFE=0 ;;
+      *)        NL_LANGINFO_MTSAFE=1 ;;
+    esac
+
+printf "%s\n" "#define NL_LANGINFO_MTSAFE $NL_LANGINFO_MTSAFE" >>confdefs.h
+
+    if test $HAVE_LANGINFO_CODESET = 1 \
+       && test $HAVE_LANGINFO_T_FMT_AMPM = 1 \
+       && test $HAVE_LANGINFO_ALTMON = 1 \
+       && test $HAVE_LANGINFO_ERA = 1 \
+       && test $FUNC_NL_LANGINFO_YESEXPR_WORKS = 1 \
+       && test $NL_LANGINFO_MTSAFE = 1; then
+      :
+    else
+      REPLACE_NL_LANGINFO=1
+
+printf "%s\n" "#define REPLACE_NL_LANGINFO 1" >>confdefs.h
+
+    fi
+  else
+    HAVE_NL_LANGINFO=0
+  fi
+  if test $HAVE_NL_LANGINFO = 0 || test $HAVE_LANGINFO_CODESET = 0; then
+    LIB_NL_LANGINFO="$LIB_SETLOCALE_NULL"
+  else
+    LIB_NL_LANGINFO=
+  fi
+
+
+  if test $HAVE_NL_LANGINFO = 0 || test $REPLACE_NL_LANGINFO = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS nl_langinfo.$ac_objext"
+
+  fi
+  if test $REPLACE_NL_LANGINFO = 1 && test $NL_LANGINFO_MTSAFE = 0; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS nl_langinfo-lock.$ac_objext"
+
+
+
+
+  CFLAG_VISIBILITY=
+  HAVE_VISIBILITY=0
+  if test -n "$GCC"; then
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the -Werror option is usable" >&5
+printf %s "checking whether the -Werror option is usable... " >&6; }
+if test ${gl_cv_cc_vis_werror+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -Werror"
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_cc_vis_werror=yes
+else $as_nop
+  gl_cv_cc_vis_werror=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+       CFLAGS="$gl_save_CFLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_vis_werror" >&5
+printf "%s\n" "$gl_cv_cc_vis_werror" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for simple visibility declarations" >&5
+printf %s "checking for simple visibility declarations... " >&6; }
+if test ${gl_cv_cc_visibility+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -fvisibility=hidden"
+                                          if test $gl_cv_cc_vis_werror = yes; then
+         CFLAGS="$CFLAGS -Werror"
+       fi
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern __attribute__((__visibility__("hidden"))) int hiddenvar;
+              extern __attribute__((__visibility__("default"))) int exportedvar;
+              extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void);
+              extern __attribute__((__visibility__("default"))) int exportedfunc (void);
+              void dummyfunc (void);
+              int hiddenvar;
+              int exportedvar;
+              int hiddenfunc (void) { return 51; }
+              int exportedfunc (void) { return 1225736919; }
+              void dummyfunc (void) {}
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_cc_visibility=yes
+else $as_nop
+  gl_cv_cc_visibility=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+       CFLAGS="$gl_save_CFLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_visibility" >&5
+printf "%s\n" "$gl_cv_cc_visibility" >&6; }
+    if test $gl_cv_cc_visibility = yes; then
+      CFLAG_VISIBILITY="-fvisibility=hidden"
+      HAVE_VISIBILITY=1
+    fi
+  fi
+
+
+
+printf "%s\n" "#define HAVE_VISIBILITY $HAVE_VISIBILITY" >>confdefs.h
+
+
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_NL_LANGINFO=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_NL_LANGINFO 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for obstacks that work with any size object" >&5
+printf %s "checking for obstacks that work with any size object... " >&6; }
+if test ${ac_cv_func_obstack+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include "obstack.h"
+             void *obstack_chunk_alloc (size_t n) { return 0; }
+             void obstack_chunk_free (void *p) { }
+             /* Check that an internal function returns size_t, not int.  */
+             size_t _obstack_memory_used (struct obstack *);
+
+int
+main (void)
+{
+struct obstack mem;
+             obstack_init (&mem);
+             obstack_free (&mem, 0);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_func_obstack=yes
+else $as_nop
+  ac_cv_func_obstack=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_obstack" >&5
+printf "%s\n" "$ac_cv_func_obstack" >&6; }
+   if test "$ac_cv_func_obstack" = yes; then
+
+printf "%s\n" "#define HAVE_OBSTACK 1" >>confdefs.h
+
+   else
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS obstack.$ac_objext"
+
+   fi
+
+
+
+
+  case "$host_os" in
+    mingw* | pw*)
+      REPLACE_OPEN=1
+      ;;
+    *)
+
+      if test "$gl_cv_macro_O_CLOEXEC" != yes; then
+        REPLACE_OPEN=1
+      fi
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether open recognizes a trailing slash" >&5
+printf %s "checking whether open recognizes a trailing slash... " >&6; }
+if test ${gl_cv_func_open_slash+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  # Assume that if we have lstat, we can also check symlinks.
+     if test $ac_cv_func_lstat = yes; then
+       touch conftest.tmp
+       ln -s conftest.tmp conftest.lnk
+     fi
+     if test "$cross_compiling" = yes
+then :
+
+        case "$host_os" in
+          freebsd* | aix* | hpux* | solaris2.[0-9] | solaris2.[0-9].*)
+            gl_cv_func_open_slash="guessing no" ;;
+          *)
+            gl_cv_func_open_slash="guessing yes" ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <fcntl.h>
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+
+$gl_mda_defines
+
+int main ()
+{
+  int result = 0;
+#if HAVE_LSTAT
+  if (open ("conftest.lnk/", O_RDONLY) != -1)
+    result |= 1;
+#endif
+  if (open ("conftest.sl/", O_CREAT, 0600) >= 0)
+    result |= 2;
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_open_slash=yes
+else $as_nop
+  gl_cv_func_open_slash=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+     rm -f conftest.sl conftest.tmp conftest.lnk
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_open_slash" >&5
+printf "%s\n" "$gl_cv_func_open_slash" >&6; }
+  case "$gl_cv_func_open_slash" in
+    *no)
+
+printf "%s\n" "#define OPEN_TRAILING_SLASH_BUG 1" >>confdefs.h
+
+      ;;
+  esac
+
+      case "$gl_cv_func_open_slash" in
+        *no)
+          REPLACE_OPEN=1
+          ;;
+      esac
+      ;;
+  esac
+
+    if test $REPLACE_OPEN = 0; then
+
+
+
+  if test $ac_cv_func_fchdir = no; then
+    HAVE_FCHDIR=0
+  fi
+
+      if test $HAVE_FCHDIR = 0; then
+        REPLACE_OPEN=1
+      fi
+    fi
+
+
+
+  if test $REPLACE_OPEN = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS open.$ac_objext"
+
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_OPEN=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_OPEN 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+  case $ac_cv_func_openat+$gl_cv_func_lstat_dereferences_slashed_symlink+$gl_cv_macro_O_CLOEXEC in
+  yes+*yes+yes)
+    ;;
+  yes+*)
+    # Solaris 10 lacks O_CLOEXEC.
+    # Solaris 9 has *at functions, but uniformly mishandles trailing
+    # slash in all of them.
+    REPLACE_OPENAT=1
+    ;;
+  *)
+    HAVE_OPENAT=0
+    ;;
+  esac
+
+  if test $HAVE_OPENAT = 0 || test $REPLACE_OPENAT = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS openat.$ac_objext"
+
+
+
+  :
+
+  fi
+
+
+printf "%s\n" "#define GNULIB_OPENAT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_OPENAT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_OPENAT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+printf "%s\n" "#define GNULIB_OPENAT_SAFER 1" >>confdefs.h
+
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "opendir" "ac_cv_func_opendir"
+if test "x$ac_cv_func_opendir" = xyes
+then :
+  printf "%s\n" "#define HAVE_OPENDIR 1" >>confdefs.h
+
+fi
+
+  if test $ac_cv_func_opendir = no; then
+    HAVE_OPENDIR=0
+  fi
+
+
+
+
+  if test $ac_cv_func_fchdir = no; then
+    HAVE_FCHDIR=0
+  fi
+
+    if test $HAVE_FCHDIR = 0; then
+      if test $HAVE_OPENDIR = 1; then
+        REPLACE_OPENDIR=1
+      fi
+    fi
+
+      case $host_os,$HAVE_OPENDIR in
+    os2*,1)
+      REPLACE_OPENDIR=1;;
+  esac
+
+  if test $HAVE_OPENDIR = 0 || test $REPLACE_OPENDIR = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS opendir.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_OPENDIR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_OPENDIR 1" >>confdefs.h
+
+
+
+
+
+
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for perl5.005 or newer" >&5
+printf %s "checking for perl5.005 or newer... " >&6; }
+  if test "${PERL+set}" = set; then
+    # 'PERL' is set in the user's environment.
+    candidate_perl_names="$PERL"
+    perl_specified=yes
+  else
+    candidate_perl_names='perl perl5'
+    perl_specified=no
+  fi
+
+  found=no
+
+  PERL="$am_missing_run perl"
+  for perl in $candidate_perl_names; do
+    # Run test in a subshell; some versions of sh will print an error if
+    # an executable is not found, even if stderr is redirected.
+    if ( $perl -e 'require 5.005; use File::Compare; use warnings;' ) > /dev/null 2>&1; then
+      PERL=$perl
+      found=yes
+      break
+    fi
+  done
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $found" >&5
+printf "%s\n" "$found" >&6; }
+  test $found = no && { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING:
+WARNING: You don't seem to have perl5.005 or newer installed, or you lack
+         a usable version of the Perl File::Compare module.  As a result,
+         you may be unable to run a few tests or to regenerate certain
+         files if you modify the sources from which they are derived.
+ " >&5
+printf "%s\n" "$as_me: WARNING:
+WARNING: You don't seem to have perl5.005 or newer installed, or you lack
+         a usable version of the Perl File::Compare module.  As a result,
+         you may be unable to run a few tests or to regenerate certain
+         files if you modify the sources from which they are derived.
+ " >&2;}
+
+
+
+
+
+  if test $ac_cv_func_pipe != yes; then
+    HAVE_PIPE=0
+  fi
+
+  if test $HAVE_PIPE = 0; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS pipe.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_PIPE=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_PIPE 1" >>confdefs.h
+
+
+
+
+
+  XGETTEXT_EXTRA_OPTIONS="$XGETTEXT_EXTRA_OPTIONS --keyword='proper_name:1,\"This is a proper name. See the gettext manual, section Names.\"'"
+
+
+
+  XGETTEXT_EXTRA_OPTIONS="$XGETTEXT_EXTRA_OPTIONS --keyword='proper_name_utf8:1,\"This is a proper name. See the gettext manual, section Names.\"'"
+
+
+      :
+
+
+
+  :
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "raise" "ac_cv_func_raise"
+if test "x$ac_cv_func_raise" = xyes
+then :
+  printf "%s\n" "#define HAVE_RAISE 1" >>confdefs.h
+
+fi
+
+  if test $ac_cv_func_raise = no; then
+    HAVE_RAISE=0
+  else
+
+
+      if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+        REPLACE_RAISE=1
+      fi
+
+
+
+
+
+  HAVE_POSIX_SIGNALBLOCKING=0
+  if test "$gl_cv_type_sigset_t" = yes; then
+    ac_fn_c_check_func "$LINENO" "sigprocmask" "ac_cv_func_sigprocmask"
+if test "x$ac_cv_func_sigprocmask" = xyes
+then :
+  HAVE_POSIX_SIGNALBLOCKING=1
+fi
+
+  fi
+
+      if test $HAVE_POSIX_SIGNALBLOCKING = 0; then
+        :
+      fi
+
+  fi
+
+  if test $HAVE_RAISE = 0 || test $REPLACE_RAISE = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS raise.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_RAISE=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_RAISE 1" >>confdefs.h
+
+
+
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "rawmemchr" "ac_cv_func_rawmemchr"
+if test "x$ac_cv_func_rawmemchr" = xyes
+then :
+  printf "%s\n" "#define HAVE_RAWMEMCHR 1" >>confdefs.h
+
+fi
+
+  if test $ac_cv_func_rawmemchr = no; then
+    HAVE_RAWMEMCHR=0
+  fi
+
+  if test $HAVE_RAWMEMCHR = 0; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS rawmemchr.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_RAWMEMCHR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_RAWMEMCHR 1" >>confdefs.h
+
+
+
+
+
+
+
+    if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+      REPLACE_READ=1
+    fi
+
+
+
+  if test $REPLACE_READ = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS read.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_READ=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_READ 1" >>confdefs.h
+
+
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "readdir" "ac_cv_func_readdir"
+if test "x$ac_cv_func_readdir" = xyes
+then :
+  printf "%s\n" "#define HAVE_READDIR 1" >>confdefs.h
+
+fi
+
+  if test $ac_cv_func_readdir = no; then
+    HAVE_READDIR=0
+  fi
+
+  if test $HAVE_READDIR = 0; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS readdir.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_READDIR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_READDIR 1" >>confdefs.h
+
+
+
+
+
+
+  if test $REPLACE_REALLOC = 0; then
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether realloc (0, 0) returns nonnull" >&5
+printf %s "checking whether realloc (0, 0) returns nonnull... " >&6; }
+if test ${ac_cv_func_realloc_0_nonnull+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+          # Guess yes on platforms where we know the result.
+          *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \
+          | gnu* | *-musl* | midnightbsd* \
+          | hpux* | solaris* | cygwin* | mingw* | msys* )
+            ac_cv_func_realloc_0_nonnull="guessing yes" ;;
+          # If we don't know, obey --enable-cross-guesses.
+          *) ac_cv_func_realloc_0_nonnull="$gl_cross_guess_normal" ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+int
+main (void)
+{
+void *p = realloc (0, 0);
+            int result = !p;
+            free (p);
+            return result;
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  ac_cv_func_realloc_0_nonnull=yes
+else $as_nop
+  ac_cv_func_realloc_0_nonnull=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_realloc_0_nonnull" >&5
+printf "%s\n" "$ac_cv_func_realloc_0_nonnull" >&6; }
+  case $ac_cv_func_realloc_0_nonnull in #(
+  *yes) :
+     ;; #(
+  *) :
+    REPLACE_REALLOC=1 ;;
+esac
+
+  fi
+
+  if test $REPLACE_REALLOC = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS realloc.$ac_objext"
+
+  fi
+
+
+
+  if test $REPLACE_MALLOC = 1; then
+    REPLACE_REALLOC=1
+  fi
+
+  if test $REPLACE_REALLOC = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS realloc.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_REALLOC_POSIX=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_REALLOC_POSIX 1" >>confdefs.h
+
+
+
+
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "reallocarray" "ac_cv_func_reallocarray"
+if test "x$ac_cv_func_reallocarray" = xyes
+then :
+  printf "%s\n" "#define HAVE_REALLOCARRAY 1" >>confdefs.h
+
+fi
+
+  if test "$ac_cv_func_reallocarray" = no; then
+    HAVE_REALLOCARRAY=0
+  elif test "$gl_cv_malloc_ptrdiff" = no; then
+    REPLACE_REALLOCARRAY=1
+  fi
+
+  if test $HAVE_REALLOCARRAY = 0 || test $REPLACE_REALLOCARRAY = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS reallocarray.$ac_objext"
+
+    :
+  fi
+
+
+printf "%s\n" "#define GNULIB_REALLOCARRAY 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_REALLOCARRAY=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_REALLOCARRAY 1" >>confdefs.h
+
+
+
+
+
+# Check whether --with-included-regex was given.
+if test ${with_included_regex+y}
+then :
+  withval=$with_included_regex;
+fi
+
+
+  case $with_included_regex in #(
+  yes|no) ac_use_included_regex=$with_included_regex
+        ;;
+  '')
+    # If the system regex support is good enough that it passes the
+    # following run test, then default to *not* using the included regex.c.
+    # If cross compiling, assume the test would fail and use the included
+    # regex.c.
+
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working re_compile_pattern" >&5
+printf %s "checking for working re_compile_pattern... " >&6; }
+if test ${gl_cv_func_re_compile_pattern_working+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                   # Guess no on native Windows.
+           mingw*) gl_cv_func_re_compile_pattern_working="guessing no" ;;
+                   # Otherwise obey --enable-cross-guesses.
+           *)      gl_cv_func_re_compile_pattern_working="$gl_cross_guess_normal" ;;
+         esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <regex.h>
+
+            #include <locale.h>
+            #include <limits.h>
+            #include <string.h>
+
+            #if defined M_CHECK_ACTION || HAVE_DECL_ALARM
+            # include <signal.h>
+            # include <unistd.h>
+            #endif
+
+            #if HAVE_MALLOC_H
+            # include <malloc.h>
+            #endif
+
+            #ifdef M_CHECK_ACTION
+            /* Exit with distinguishable exit code.  */
+            static void sigabrt_no_core (int sig) { raise (SIGTERM); }
+            #endif
+
+int
+main (void)
+{
+int result = 0;
+            static struct re_pattern_buffer regex;
+            unsigned char folded_chars[UCHAR_MAX + 1];
+            int i;
+            const char *s;
+            struct re_registers regs;
+
+            /* Some builds of glibc go into an infinite loop on this
+               test.  Use alarm to force death, and mallopt to avoid
+               malloc recursion in diagnosing the corrupted heap. */
+#if HAVE_DECL_ALARM
+            signal (SIGALRM, SIG_DFL);
+            alarm (2);
+#endif
+#ifdef M_CHECK_ACTION
+            signal (SIGABRT, sigabrt_no_core);
+            mallopt (M_CHECK_ACTION, 2);
+#endif
+
+            if (setlocale (LC_ALL, "en_US.UTF-8"))
+              {
+                {
+                  /* https://sourceware.org/ml/libc-hacker/2006-09/msg00008.html
+                     This test needs valgrind to catch the bug on Debian
+                     GNU/Linux 3.1 x86, but it might catch the bug better
+                     on other platforms and it shouldn't hurt to try the
+                     test here.  */
+                  static char const pat[] = "insert into";
+                  static char const data[] =
+                    "\xFF\0\x12\xA2\xAA\xC4\xB1,K\x12\xC4\xB1*\xACK";
+                  re_set_syntax (RE_SYNTAX_GREP | RE_HAT_LISTS_NOT_NEWLINE
+                                 | RE_ICASE);
+                  memset (&regex, 0, sizeof regex);
+                  s = re_compile_pattern (pat, sizeof pat - 1, &regex);
+                  if (s)
+                    result |= 1;
+                  else
+                    {
+                      if (re_search (&regex, data, sizeof data - 1,
+                                     0, sizeof data - 1, &regs)
+                          != -1)
+                        result |= 1;
+                      regfree (&regex);
+                    }
+                }
+
+                {
+                  /* This test is from glibc bug 15078.
+                     The test case is from Andreas Schwab in
+                     <https://sourceware.org/ml/libc-alpha/2013-01/msg00967.html>.
+                     */
+                  static char const pat[] = "[^x]x";
+                  static char const data[] =
+                    /* <U1000><U103B><U103D><U1014><U103A><U102F><U1015><U103A> */
+                    "\xe1\x80\x80"
+                    "\xe1\x80\xbb"
+                    "\xe1\x80\xbd"
+                    "\xe1\x80\x94"
+                    "\xe1\x80\xba"
+                    "\xe1\x80\xaf"
+                    "\xe1\x80\x95"
+                    "\xe1\x80\xba"
+                    "x";
+                  re_set_syntax (0);
+                  memset (&regex, 0, sizeof regex);
+                  s = re_compile_pattern (pat, sizeof pat - 1, &regex);
+                  if (s)
+                    result |= 1;
+                  else
+                    {
+                      i = re_search (&regex, data, sizeof data - 1,
+                                     0, sizeof data - 1, 0);
+                      if (i != 0 && i != 21)
+                        result |= 1;
+                      regfree (&regex);
+                    }
+                }
+
+                if (! setlocale (LC_ALL, "C"))
+                  return 1;
+              }
+
+            /* This test is from glibc bug 3957, reported by Andrew Mackey.  */
+            re_set_syntax (RE_SYNTAX_EGREP | RE_HAT_LISTS_NOT_NEWLINE);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("a[^x]b", 6, &regex);
+            if (s)
+              result |= 2;
+            else
+              {
+                /* This should fail, but succeeds for glibc-2.5.  */
+                if (re_search (&regex, "a\nb", 3, 0, 3, &regs) != -1)
+                  result |= 2;
+                regfree (&regex);
+              }
+
+            /* This regular expression is from Spencer ere test number 75
+               in grep-2.3.  */
+            re_set_syntax (RE_SYNTAX_POSIX_EGREP);
+            memset (&regex, 0, sizeof regex);
+            for (i = 0; i <= UCHAR_MAX; i++)
+              folded_chars[i] = i;
+            regex.translate = folded_chars;
+            s = re_compile_pattern ("a[[:]:]]b\n", 11, &regex);
+            /* This should fail with _Invalid character class name_ error.  */
+            if (!s)
+              {
+                result |= 4;
+                regfree (&regex);
+              }
+
+            /* Ensure that [b-a] is diagnosed as invalid, when
+               using RE_NO_EMPTY_RANGES. */
+            re_set_syntax (RE_SYNTAX_POSIX_EGREP | RE_NO_EMPTY_RANGES);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("a[b-a]", 6, &regex);
+            if (s == 0)
+              {
+                result |= 8;
+                regfree (&regex);
+              }
+
+            /* This should succeed, but does not for glibc-2.1.3.  */
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("{1", 2, &regex);
+            if (s)
+              result |= 8;
+            else
+              regfree (&regex);
+
+            /* The following example is derived from a problem report
+               against gawk from Jorge Stolfi <stolfi@ic.unicamp.br>.  */
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("[an\371]*n", 7, &regex);
+            if (s)
+              result |= 8;
+            else
+              {
+                /* This should match, but does not for glibc-2.2.1.  */
+                if (re_match (&regex, "an", 2, 0, &regs) != 2)
+                  result |= 8;
+                else
+                  {
+                    free (regs.start);
+                    free (regs.end);
+                  }
+                regfree (&regex);
+              }
+
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("x", 1, &regex);
+            if (s)
+              result |= 8;
+            else
+              {
+                /* glibc-2.2.93 does not work with a negative RANGE argument.  */
+                if (re_search (&regex, "wxy", 3, 2, -2, &regs) != 1)
+                  result |= 8;
+                else
+                  {
+                    free (regs.start);
+                    free (regs.end);
+                  }
+                regfree (&regex);
+              }
+
+            /* The version of regex.c in older versions of gnulib
+               ignored RE_ICASE.  Detect that problem too.  */
+            re_set_syntax (RE_SYNTAX_EMACS | RE_ICASE);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("x", 1, &regex);
+            if (s)
+              result |= 16;
+            else
+              {
+                if (re_search (&regex, "WXY", 3, 0, 3, &regs) < 0)
+                  result |= 16;
+                else
+                  {
+                    free (regs.start);
+                    free (regs.end);
+                  }
+                regfree (&regex);
+              }
+
+            /* Catch a bug reported by Vin Shelton in
+               https://lists.gnu.org/r/bug-coreutils/2007-06/msg00089.html
+               */
+            re_set_syntax (RE_SYNTAX_POSIX_BASIC
+                           & ~RE_CONTEXT_INVALID_DUP
+                           & ~RE_NO_EMPTY_RANGES);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("[[:alnum:]_-]\\\\+\$", 16, &regex);
+            if (s)
+              result |= 32;
+            else
+              regfree (&regex);
+
+            /* REG_STARTEND was added to glibc on 2004-01-15.
+               Reject older versions.  */
+            if (! REG_STARTEND)
+              result |= 64;
+
+            /* Matching with the compiled form of this regexp would provoke
+               an assertion failure prior to glibc-2.28:
+                 regexec.c:1375: pop_fail_stack: Assertion 'num >= 0' failed
+               With glibc-2.28, compilation fails and reports the invalid
+               back reference.  */
+            re_set_syntax (RE_SYNTAX_POSIX_EGREP);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("0|()0|\\\\1|0", 10, &regex);
+            if (!s)
+              {
+                memset (&regs, 0, sizeof regs);
+                i = re_search (&regex, "x", 1, 0, 1, &regs);
+                if (i != -1)
+                  result |= 64;
+                if (0 <= i)
+                  {
+                    free (regs.start);
+                    free (regs.end);
+                  }
+                regfree (&regex);
+              }
+            else
+              {
+                if (strcmp (s, "Invalid back reference"))
+                  result |= 64;
+              }
+
+            /* glibc bug 11053.  */
+            re_set_syntax (RE_SYNTAX_POSIX_BASIC);
+            memset (&regex, 0, sizeof regex);
+            static char const pat_sub2[] = "\\\\(a*\\\\)*a*\\\\1";
+            s = re_compile_pattern (pat_sub2, sizeof pat_sub2 - 1, &regex);
+            if (s)
+              result |= 64;
+            else
+              {
+                memset (&regs, 0, sizeof regs);
+                static char const data[] = "a";
+                int datalen = sizeof data - 1;
+                i = re_search (&regex, data, datalen, 0, datalen, &regs);
+                if (i != 0)
+                  result |= 64;
+                else if (regs.num_regs < 2)
+                  result |= 64;
+                else if (! (regs.start[0] == 0 && regs.end[0] == 1))
+                  result |= 64;
+                else if (! (regs.start[1] == 0 && regs.end[1] == 0))
+                  result |= 64;
+                regfree (&regex);
+                free (regs.start);
+                free (regs.end);
+              }
+
+#if 0
+            /* It would be nice to reject hosts whose regoff_t values are too
+               narrow (including glibc on hosts with 64-bit ptrdiff_t and
+               32-bit int), but we should wait until glibc implements this
+               feature.  Otherwise, support for equivalence classes and
+               multibyte collation symbols would always be broken except
+               when compiling --without-included-regex.   */
+            if (sizeof (regoff_t) < sizeof (ptrdiff_t)
+                || sizeof (regoff_t) < sizeof (ssize_t))
+              result |= 64;
+#endif
+
+            return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_re_compile_pattern_working=yes
+else $as_nop
+  gl_cv_func_re_compile_pattern_working=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_re_compile_pattern_working" >&5
+printf "%s\n" "$gl_cv_func_re_compile_pattern_working" >&6; }
+    case "$gl_cv_func_re_compile_pattern_working" in #(
+      *yes) ac_use_included_regex=no;; #(
+      *no) ac_use_included_regex=yes;;
+    esac
+    ;;
+  *) as_fn_error $? "Invalid value for --with-included-regex: $with_included_regex" "$LINENO" 5
+    ;;
+  esac
+
+  if test $ac_use_included_regex = yes; then
+
+printf "%s\n" "#define _REGEX_INCLUDE_LIMITS_H 1" >>confdefs.h
+
+
+printf "%s\n" "#define _REGEX_LARGE_OFFSETS 1" >>confdefs.h
+
+
+printf "%s\n" "#define re_syntax_options rpl_re_syntax_options" >>confdefs.h
+
+
+printf "%s\n" "#define re_set_syntax rpl_re_set_syntax" >>confdefs.h
+
+
+printf "%s\n" "#define re_compile_pattern rpl_re_compile_pattern" >>confdefs.h
+
+
+printf "%s\n" "#define re_compile_fastmap rpl_re_compile_fastmap" >>confdefs.h
+
+
+printf "%s\n" "#define re_search rpl_re_search" >>confdefs.h
+
+
+printf "%s\n" "#define re_search_2 rpl_re_search_2" >>confdefs.h
+
+
+printf "%s\n" "#define re_match rpl_re_match" >>confdefs.h
+
+
+printf "%s\n" "#define re_match_2 rpl_re_match_2" >>confdefs.h
+
+
+printf "%s\n" "#define re_set_registers rpl_re_set_registers" >>confdefs.h
+
+
+printf "%s\n" "#define re_comp rpl_re_comp" >>confdefs.h
+
+
+printf "%s\n" "#define re_exec rpl_re_exec" >>confdefs.h
+
+
+printf "%s\n" "#define regcomp rpl_regcomp" >>confdefs.h
+
+
+printf "%s\n" "#define regexec rpl_regexec" >>confdefs.h
+
+
+printf "%s\n" "#define regerror rpl_regerror" >>confdefs.h
+
+
+printf "%s\n" "#define regfree rpl_regfree" >>confdefs.h
+
+  fi
+
+  if test $ac_use_included_regex = yes; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS regex.$ac_objext"
+
+
+
+
+
+
+
+  ac_fn_c_check_header_compile "$LINENO" "libintl.h" "ac_cv_header_libintl_h" "$ac_includes_default"
+if test "x$ac_cv_header_libintl_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBINTL_H 1" >>confdefs.h
+
+fi
+
+
+  ac_fn_check_decl "$LINENO" "isblank" "ac_cv_have_decl_isblank" "#include <ctype.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_isblank" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_ISBLANK $ac_have_decl" >>confdefs.h
+
+
+  fi
+
+
+
+
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether setlocale (LC_ALL, NULL) is multithread-safe" >&5
+printf %s "checking whether setlocale (LC_ALL, NULL) is multithread-safe... " >&6; }
+if test ${gl_cv_func_setlocale_null_all_mtsafe+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case "$host_os" in
+       # Guess no on musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin.
+       *-musl* | darwin* | freebsd* | midnightbsd* | netbsd* | openbsd* | aix* | haiku* | cygwin*)
+         gl_cv_func_setlocale_null_all_mtsafe=no ;;
+       # Guess yes on glibc, HP-UX, IRIX, Solaris, native Windows.
+       *-gnu* | gnu* | hpux* | irix* | solaris* | mingw*)
+         gl_cv_func_setlocale_null_all_mtsafe=yes ;;
+       # If we don't know, obey --enable-cross-guesses.
+       *)
+         gl_cv_func_setlocale_null_all_mtsafe="$gl_cross_guess_normal" ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_setlocale_null_all_mtsafe" >&5
+printf "%s\n" "$gl_cv_func_setlocale_null_all_mtsafe" >&6; }
+    case "$host_os" in
+    mingw*) ;;
+    *)
+      if test $gl_pthread_api = no && test $ac_cv_header_threads_h = no; then
+        gl_cv_func_setlocale_null_all_mtsafe="trivially yes"
+      fi
+      ;;
+  esac
+  case "$gl_cv_func_setlocale_null_all_mtsafe" in
+    *yes) SETLOCALE_NULL_ALL_MTSAFE=1 ;;
+    *)    SETLOCALE_NULL_ALL_MTSAFE=0 ;;
+  esac
+
+printf "%s\n" "#define SETLOCALE_NULL_ALL_MTSAFE $SETLOCALE_NULL_ALL_MTSAFE" >>confdefs.h
+
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether setlocale (category, NULL) is multithread-safe" >&5
+printf %s "checking whether setlocale (category, NULL) is multithread-safe... " >&6; }
+if test ${gl_cv_func_setlocale_null_one_mtsafe+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case "$host_os" in
+       # Guess no on OpenBSD, AIX.
+       openbsd* | aix*)
+         gl_cv_func_setlocale_null_one_mtsafe=no ;;
+       # Guess yes on glibc, musl libc, macOS, FreeBSD, NetBSD, HP-UX, IRIX, Solaris, Haiku, Cygwin, native Windows.
+       *-gnu* | gnu* | *-musl* | darwin* | freebsd* | midnightbsd* | netbsd* | hpux* | irix* | solaris* | haiku* | cygwin* | mingw*)
+         gl_cv_func_setlocale_null_one_mtsafe=yes ;;
+       # If we don't know, obey --enable-cross-guesses.
+       *)
+         gl_cv_func_setlocale_null_one_mtsafe="$gl_cross_guess_normal" ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_setlocale_null_one_mtsafe" >&5
+printf "%s\n" "$gl_cv_func_setlocale_null_one_mtsafe" >&6; }
+    case "$host_os" in
+    mingw*) ;;
+    *)
+      if test $gl_pthread_api = no && test $ac_cv_header_threads_h = no; then
+        gl_cv_func_setlocale_null_one_mtsafe="trivially yes"
+      fi
+      ;;
+  esac
+  case "$gl_cv_func_setlocale_null_one_mtsafe" in
+    *yes) SETLOCALE_NULL_ONE_MTSAFE=1 ;;
+    *)    SETLOCALE_NULL_ONE_MTSAFE=0 ;;
+  esac
+
+printf "%s\n" "#define SETLOCALE_NULL_ONE_MTSAFE $SETLOCALE_NULL_ONE_MTSAFE" >>confdefs.h
+
+
+    if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then
+    case "$host_os" in
+      mingw*) LIB_SETLOCALE_NULL= ;;
+      *)
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether imported symbols can be declared weak" >&5
+printf %s "checking whether imported symbols can be declared weak... " >&6; }
+if test ${gl_cv_have_weak+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_cv_have_weak=no
+          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern void xyzzy ();
+#pragma weak xyzzy
+int
+main (void)
+{
+xyzzy();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_have_weak=maybe
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+     if test $gl_cv_have_weak = maybe; then
+                     if test "$cross_compiling" = yes
+then :
+                      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __ELF__
+             Extensible Linking Format
+             #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Extensible Linking Format" >/dev/null 2>&1
+then :
+  gl_cv_have_weak="guessing yes"
+else $as_nop
+  gl_cv_have_weak="guessing no"
+fi
+rm -rf conftest*
+
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#pragma weak fputs
+int main ()
+{
+  return (fputs == NULL);
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_have_weak=yes
+else $as_nop
+  gl_cv_have_weak=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+     fi
+          case " $LDFLAGS " in
+       *" -static "*) gl_cv_have_weak=no ;;
+     esac
+                    case "$gl_cv_have_weak" in
+       *yes)
+         case "$host_os" in
+           freebsd* | dragonfly* | midnightbsd*)
+             : > conftest1.c
+             $CC $CPPFLAGS $CFLAGS $LDFLAGS -fPIC -shared -o libempty.so conftest1.c -lpthread >&5 2>&1
+             cat <<EOF > conftest2.c
+#include <pthread.h>
+#pragma weak pthread_mutexattr_gettype
+int main ()
+{
+  return (pthread_mutexattr_gettype != NULL);
+}
+EOF
+             $CC $CPPFLAGS $CFLAGS $LDFLAGS -o conftest conftest2.c libempty.so >&5 2>&1 \
+               || gl_cv_have_weak=no
+             rm -f conftest1.c libempty.so conftest2.c conftest
+             ;;
+         esac
+         ;;
+     esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_have_weak" >&5
+printf "%s\n" "$gl_cv_have_weak" >&6; }
+  case "$gl_cv_have_weak" in
+    *yes)
+
+printf "%s\n" "#define HAVE_WEAK_SYMBOLS 1" >>confdefs.h
+
+      ;;
+  esac
+
+        case "$gl_cv_have_weak" in
+          *yes) LIB_SETLOCALE_NULL= ;;
+          *)    LIB_SETLOCALE_NULL="$LIBPTHREAD" ;;
+        esac
+        ;;
+    esac
+  else
+    LIB_SETLOCALE_NULL=
+  fi
+
+
+  if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS setlocale-lock.$ac_objext"
+
+
+
+
+  CFLAG_VISIBILITY=
+  HAVE_VISIBILITY=0
+  if test -n "$GCC"; then
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the -Werror option is usable" >&5
+printf %s "checking whether the -Werror option is usable... " >&6; }
+if test ${gl_cv_cc_vis_werror+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -Werror"
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_cc_vis_werror=yes
+else $as_nop
+  gl_cv_cc_vis_werror=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+       CFLAGS="$gl_save_CFLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_vis_werror" >&5
+printf "%s\n" "$gl_cv_cc_vis_werror" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for simple visibility declarations" >&5
+printf %s "checking for simple visibility declarations... " >&6; }
+if test ${gl_cv_cc_visibility+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -fvisibility=hidden"
+                                          if test $gl_cv_cc_vis_werror = yes; then
+         CFLAGS="$CFLAGS -Werror"
+       fi
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern __attribute__((__visibility__("hidden"))) int hiddenvar;
+              extern __attribute__((__visibility__("default"))) int exportedvar;
+              extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void);
+              extern __attribute__((__visibility__("default"))) int exportedfunc (void);
+              void dummyfunc (void);
+              int hiddenvar;
+              int exportedvar;
+              int hiddenfunc (void) { return 51; }
+              int exportedfunc (void) { return 1225736919; }
+              void dummyfunc (void) {}
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_cc_visibility=yes
+else $as_nop
+  gl_cv_cc_visibility=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+       CFLAGS="$gl_save_CFLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_visibility" >&5
+printf "%s\n" "$gl_cv_cc_visibility" >&6; }
+    if test $gl_cv_cc_visibility = yes; then
+      CFLAG_VISIBILITY="-fvisibility=hidden"
+      HAVE_VISIBILITY=1
+    fi
+  fi
+
+
+
+printf "%s\n" "#define HAVE_VISIBILITY $HAVE_VISIBILITY" >>confdefs.h
+
+
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_SETLOCALE_NULL=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_SETLOCALE_NULL 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+# Check whether --with-libsigsegv was given.
+if test ${with_libsigsegv+y}
+then :
+  withval=$with_libsigsegv;
+fi
+
+  SIGSEGV_H=sigsegv.h
+  if test "$with_libsigsegv" = yes; then
+
+
+
+
+
+
+
+
+
+
+
+
+
+    use_additional=yes
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+    eval additional_libdir2=\"$exec_prefix/$acl_libdirstem2\"
+    eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\"
+
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+
+# Check whether --with-libsigsegv-prefix was given.
+if test ${with_libsigsegv_prefix+y}
+then :
+  withval=$with_libsigsegv_prefix;
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+          eval additional_libdir2=\"$exec_prefix/$acl_libdirstem2\"
+          eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\"
+
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/$acl_libdirstem"
+        additional_libdir2="$withval/$acl_libdirstem2"
+        additional_libdir3="$withval/$acl_libdirstem3"
+      fi
+    fi
+
+fi
+
+  if test "X$additional_libdir2" = "X$additional_libdir"; then
+    additional_libdir2=
+  fi
+  if test "X$additional_libdir3" = "X$additional_libdir"; then
+    additional_libdir3=
+  fi
+      LIBSIGSEGV=
+  LTLIBSIGSEGV=
+  INCSIGSEGV=
+  LIBSIGSEGV_PREFIX=
+      HAVE_LIBSIGSEGV=
+  rpathdirs=
+  ltrpathdirs=
+  names_already_handled=
+  names_next_round='sigsegv '
+  while test -n "$names_next_round"; do
+    names_this_round="$names_next_round"
+    names_next_round=
+    for name in $names_this_round; do
+      already_handled=
+      for n in $names_already_handled; do
+        if test "$n" = "$name"; then
+          already_handled=yes
+          break
+        fi
+      done
+      if test -z "$already_handled"; then
+        names_already_handled="$names_already_handled $name"
+                        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'`
+        eval value=\"\$HAVE_LIB$uppername\"
+        if test -n "$value"; then
+          if test "$value" = yes; then
+            eval value=\"\$LIB$uppername\"
+            test -z "$value" || LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }$value"
+            eval value=\"\$LTLIB$uppername\"
+            test -z "$value" || LTLIBSIGSEGV="${LTLIBSIGSEGV}${LTLIBSIGSEGV:+ }$value"
+          else
+                                    :
+          fi
+        else
+                              found_dir=
+          found_la=
+          found_so=
+          found_a=
+          eval libname=\"$acl_libname_spec\"    # typically: libname=lib$name
+          if test -n "$acl_shlibext"; then
+            shrext=".$acl_shlibext"             # typically: shrext=.so
+          else
+            shrext=
+          fi
+          if test $use_additional = yes; then
+            for additional_libdir_variable in additional_libdir additional_libdir2 additional_libdir3; do
+              if test "X$found_dir" = "X"; then
+                eval dir=\$$additional_libdir_variable
+                if test -n "$dir"; then
+                                                      if test -n "$acl_shlibext"; then
+                    if test -f "$dir/$libname$shrext" && acl_is_expected_elfclass < "$dir/$libname$shrext"; then
+                      found_dir="$dir"
+                      found_so="$dir/$libname$shrext"
+                    else
+                      if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
+                        ver=`(cd "$dir" && \
+                              for f in "$libname$shrext".*; do echo "$f"; done \
+                              | sed -e "s,^$libname$shrext\\\\.,," \
+                              | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
+                              | sed 1q ) 2>/dev/null`
+                        if test -n "$ver" && test -f "$dir/$libname$shrext.$ver" && acl_is_expected_elfclass < "$dir/$libname$shrext.$ver"; then
+                          found_dir="$dir"
+                          found_so="$dir/$libname$shrext.$ver"
+                        fi
+                      else
+                        eval library_names=\"$acl_library_names_spec\"
+                        for f in $library_names; do
+                          if test -f "$dir/$f" && acl_is_expected_elfclass < "$dir/$f"; then
+                            found_dir="$dir"
+                            found_so="$dir/$f"
+                            break
+                          fi
+                        done
+                      fi
+                    fi
+                  fi
+                                    if test "X$found_dir" = "X"; then
+                    if test -f "$dir/$libname.$acl_libext" && ${AR-ar} -p "$dir/$libname.$acl_libext" | acl_is_expected_elfclass; then
+                      found_dir="$dir"
+                      found_a="$dir/$libname.$acl_libext"
+                    fi
+                  fi
+                  if test "X$found_dir" != "X"; then
+                    if test -f "$dir/$libname.la"; then
+                      found_la="$dir/$libname.la"
+                    fi
+                  fi
+                fi
+              fi
+            done
+          fi
+          if test "X$found_dir" = "X"; then
+            for x in $LDFLAGS $LTLIBSIGSEGV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+              case "$x" in
+                -L*)
+                  dir=`echo "X$x" | sed -e 's/^X-L//'`
+                                    if test -n "$acl_shlibext"; then
+                    if test -f "$dir/$libname$shrext" && acl_is_expected_elfclass < "$dir/$libname$shrext"; then
+                      found_dir="$dir"
+                      found_so="$dir/$libname$shrext"
+                    else
+                      if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
+                        ver=`(cd "$dir" && \
+                              for f in "$libname$shrext".*; do echo "$f"; done \
+                              | sed -e "s,^$libname$shrext\\\\.,," \
+                              | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
+                              | sed 1q ) 2>/dev/null`
+                        if test -n "$ver" && test -f "$dir/$libname$shrext.$ver" && acl_is_expected_elfclass < "$dir/$libname$shrext.$ver"; then
+                          found_dir="$dir"
+                          found_so="$dir/$libname$shrext.$ver"
+                        fi
+                      else
+                        eval library_names=\"$acl_library_names_spec\"
+                        for f in $library_names; do
+                          if test -f "$dir/$f" && acl_is_expected_elfclass < "$dir/$f"; then
+                            found_dir="$dir"
+                            found_so="$dir/$f"
+                            break
+                          fi
+                        done
+                      fi
+                    fi
+                  fi
+                                    if test "X$found_dir" = "X"; then
+                    if test -f "$dir/$libname.$acl_libext" && ${AR-ar} -p "$dir/$libname.$acl_libext" | acl_is_expected_elfclass; then
+                      found_dir="$dir"
+                      found_a="$dir/$libname.$acl_libext"
+                    fi
+                  fi
+                  if test "X$found_dir" != "X"; then
+                    if test -f "$dir/$libname.la"; then
+                      found_la="$dir/$libname.la"
+                    fi
+                  fi
+                  ;;
+              esac
+              if test "X$found_dir" != "X"; then
+                break
+              fi
+            done
+          fi
+          if test "X$found_dir" != "X"; then
+                        LTLIBSIGSEGV="${LTLIBSIGSEGV}${LTLIBSIGSEGV:+ }-L$found_dir -l$name"
+            if test "X$found_so" != "X"; then
+                                                        if test "$enable_rpath" = no \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem" \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem2" \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem3"; then
+                                LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }$found_so"
+              else
+                                                                                haveit=
+                for x in $ltrpathdirs; do
+                  if test "X$x" = "X$found_dir"; then
+                    haveit=yes
+                    break
+                  fi
+                done
+                if test -z "$haveit"; then
+                  ltrpathdirs="$ltrpathdirs $found_dir"
+                fi
+                                if test "$acl_hardcode_direct" = yes; then
+                                                      LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }$found_so"
+                else
+                  if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
+                                                            LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }$found_so"
+                                                            haveit=
+                    for x in $rpathdirs; do
+                      if test "X$x" = "X$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      rpathdirs="$rpathdirs $found_dir"
+                    fi
+                  else
+                                                                                haveit=
+                    for x in $LDFLAGS $LIBSIGSEGV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                      if test "X$x" = "X-L$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }-L$found_dir"
+                    fi
+                    if test "$acl_hardcode_minus_L" != no; then
+                                                                                        LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }$found_so"
+                    else
+                                                                                                                                                                                LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }-l$name"
+                    fi
+                  fi
+                fi
+              fi
+            else
+              if test "X$found_a" != "X"; then
+                                LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }$found_a"
+              else
+                                                LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }-L$found_dir -l$name"
+              fi
+            fi
+                        additional_includedir=
+            case "$found_dir" in
+              */$acl_libdirstem | */$acl_libdirstem/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'`
+                if test "$name" = 'sigsegv'; then
+                  LIBSIGSEGV_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+              */$acl_libdirstem2 | */$acl_libdirstem2/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'`
+                if test "$name" = 'sigsegv'; then
+                  LIBSIGSEGV_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+              */$acl_libdirstem3 | */$acl_libdirstem3/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem3/"'*$,,'`
+                if test "$name" = 'sigsegv'; then
+                  LIBSIGSEGV_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+            esac
+            if test "X$additional_includedir" != "X"; then
+                                                                                                                if test "X$additional_includedir" != "X/usr/include"; then
+                haveit=
+                if test "X$additional_includedir" = "X/usr/local/include"; then
+                  if test -n "$GCC"; then
+                    case $host_os in
+                      linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+                    esac
+                  fi
+                fi
+                if test -z "$haveit"; then
+                  for x in $CPPFLAGS $INCSIGSEGV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                    if test "X$x" = "X-I$additional_includedir"; then
+                      haveit=yes
+                      break
+                    fi
+                  done
+                  if test -z "$haveit"; then
+                    if test -d "$additional_includedir"; then
+                                            INCSIGSEGV="${INCSIGSEGV}${INCSIGSEGV:+ }-I$additional_includedir"
+                    fi
+                  fi
+                fi
+              fi
+            fi
+                        if test -n "$found_la"; then
+                                                        save_libdir="$libdir"
+              case "$found_la" in
+                */* | *\\*) . "$found_la" ;;
+                *) . "./$found_la" ;;
+              esac
+              libdir="$save_libdir"
+                            for dep in $dependency_libs; do
+                case "$dep" in
+                  -L*)
+                    dependency_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+                                                                                                                                                                if test "X$dependency_libdir" != "X/usr/$acl_libdirstem" \
+                       && test "X$dependency_libdir" != "X/usr/$acl_libdirstem2" \
+                       && test "X$dependency_libdir" != "X/usr/$acl_libdirstem3"; then
+                      haveit=
+                      if test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem" \
+                         || test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem2" \
+                         || test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem3"; then
+                        if test -n "$GCC"; then
+                          case $host_os in
+                            linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+                          esac
+                        fi
+                      fi
+                      if test -z "$haveit"; then
+                        haveit=
+                        for x in $LDFLAGS $LIBSIGSEGV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                          if test "X$x" = "X-L$dependency_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$dependency_libdir"; then
+                                                        LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }-L$dependency_libdir"
+                          fi
+                        fi
+                        haveit=
+                        for x in $LDFLAGS $LTLIBSIGSEGV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                          if test "X$x" = "X-L$dependency_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$dependency_libdir"; then
+                                                        LTLIBSIGSEGV="${LTLIBSIGSEGV}${LTLIBSIGSEGV:+ }-L$dependency_libdir"
+                          fi
+                        fi
+                      fi
+                    fi
+                    ;;
+                  -R*)
+                    dir=`echo "X$dep" | sed -e 's/^X-R//'`
+                    if test "$enable_rpath" != no; then
+                                                                  haveit=
+                      for x in $rpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        rpathdirs="$rpathdirs $dir"
+                      fi
+                                                                  haveit=
+                      for x in $ltrpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        ltrpathdirs="$ltrpathdirs $dir"
+                      fi
+                    fi
+                    ;;
+                  -l*)
+                                                                                                                                                                dep=`echo "X$dep" | sed -e 's/^X-l//'`
+                    if test "X$dep" != Xc \
+                       || case $host_os in
+                            linux* | gnu* | k*bsd*-gnu) false ;;
+                            *)                          true ;;
+                          esac; then
+                      names_next_round="$names_next_round $dep"
+                    fi
+                    ;;
+                  *.la)
+                                                                                names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+                    ;;
+                  *)
+                                        LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }$dep"
+                    LTLIBSIGSEGV="${LTLIBSIGSEGV}${LTLIBSIGSEGV:+ }$dep"
+                    ;;
+                esac
+              done
+            fi
+          else
+                                                            LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }-l$name"
+            LTLIBSIGSEGV="${LTLIBSIGSEGV}${LTLIBSIGSEGV:+ }-l$name"
+          fi
+        fi
+      fi
+    done
+  done
+  if test "X$rpathdirs" != "X"; then
+    if test -n "$acl_hardcode_libdir_separator"; then
+                        alldirs=
+      for found_dir in $rpathdirs; do
+        alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir"
+      done
+            acl_save_libdir="$libdir"
+      libdir="$alldirs"
+      eval flag=\"$acl_hardcode_libdir_flag_spec\"
+      libdir="$acl_save_libdir"
+      LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }$flag"
+    else
+            for found_dir in $rpathdirs; do
+        acl_save_libdir="$libdir"
+        libdir="$found_dir"
+        eval flag=\"$acl_hardcode_libdir_flag_spec\"
+        libdir="$acl_save_libdir"
+        LIBSIGSEGV="${LIBSIGSEGV}${LIBSIGSEGV:+ }$flag"
+      done
+    fi
+  fi
+  if test "X$ltrpathdirs" != "X"; then
+            for found_dir in $ltrpathdirs; do
+      LTLIBSIGSEGV="${LTLIBSIGSEGV}${LTLIBSIGSEGV:+ }-R$found_dir"
+    done
+  fi
+
+
+
+
+
+
+        ac_save_CPPFLAGS="$CPPFLAGS"
+
+  for element in $INCSIGSEGV; do
+    haveit=
+    for x in $CPPFLAGS; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
+    fi
+  done
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for libsigsegv" >&5
+printf %s "checking for libsigsegv... " >&6; }
+if test ${ac_cv_libsigsegv+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    ac_save_LIBS="$LIBS"
+                                case " $LIBSIGSEGV" in
+      *" -l"*) LIBS="$LIBS $LIBSIGSEGV" ;;
+      *)       LIBS="$LIBSIGSEGV $LIBS" ;;
+    esac
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sigsegv.h>
+int
+main (void)
+{
+sigsegv_deinstall_handler();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_libsigsegv=yes
+else $as_nop
+  ac_cv_libsigsegv='no, consider installing GNU libsigsegv'
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+    LIBS="$ac_save_LIBS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_libsigsegv" >&5
+printf "%s\n" "$ac_cv_libsigsegv" >&6; }
+  if test "$ac_cv_libsigsegv" = yes; then
+    HAVE_LIBSIGSEGV=yes
+
+printf "%s\n" "#define HAVE_LIBSIGSEGV 1" >>confdefs.h
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to link with libsigsegv" >&5
+printf %s "checking how to link with libsigsegv... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LIBSIGSEGV" >&5
+printf "%s\n" "$LIBSIGSEGV" >&6; }
+  else
+    HAVE_LIBSIGSEGV=no
+            CPPFLAGS="$ac_save_CPPFLAGS"
+    LIBSIGSEGV=
+    LTLIBSIGSEGV=
+    LIBSIGSEGV_PREFIX=
+  fi
+
+
+
+
+
+
+
+    gl_cv_lib_sigsegv="$ac_cv_libsigsegv"
+
+    if test "$gl_cv_lib_sigsegv" = yes; then
+      SIGSEGV_H=
+    fi
+  fi
+
+   if test -n "$SIGSEGV_H"; then
+  GL_GENERATE_SIGSEGV_H_TRUE=
+  GL_GENERATE_SIGSEGV_H_FALSE='#'
+else
+  GL_GENERATE_SIGSEGV_H_TRUE='#'
+  GL_GENERATE_SIGSEGV_H_FALSE=
+fi
+
+  if test -n "$SIGSEGV_H"; then
+
+
+    case "$host_os" in
+      solaris2.11)
+
+printf "%s\n" "#define SOLARIS11 1" >>confdefs.h
+
+        ;;
+    esac
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stack direction" >&5
+printf %s "checking for stack direction... " >&6; }
+if test ${sv_cv_stack_direction_msg+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    case "$host_cpu" in
+            a29k | \
+      aarch64* | \
+      alpha* | \
+      arc | \
+      arm* | strongarm* | xscale* | \
+      avr | avr32 | \
+      bfin | \
+      c1 | c2 | c32 | c34 | c38 | \
+      clipper | \
+      cris | \
+      d30v | \
+      elxsi | \
+      fr30 | \
+      h8300 | \
+      i?86 | x86_64 | \
+      i860 | \
+      ia64 | \
+      m32r | \
+      m68* | \
+      m88k | \
+      mcore | \
+      microblaze | \
+      mips* | \
+      mmix | \
+      mn10200 | \
+      mn10300 | \
+      nios2 | \
+      nds32* | \
+      ns32k | \
+      pdp11 | \
+      pj* | \
+      powerpc* | rs6000 | \
+      riscv* | \
+      romp | \
+      s390* | \
+      sh* | \
+      sparc* | \
+      v850 | \
+      vax | \
+      xtensa)
+        sv_cv_stack_direction=-1 ;;
+      c4x | \
+      dsp16xx | \
+      i960 | \
+      hppa* | parisc* | \
+      stormy16 | \
+      we32k)
+        sv_cv_stack_direction=1 ;;
+      *)
+        if test $cross_compiling = no; then
+          cat > conftest.c <<EOF
+#include <stdio.h>
+int
+find_stack_direction (int *addr, int depth)
+{
+  int dir, dummy = 0;
+  if (! addr)
+    addr = &dummy;
+  *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
+  dir = depth ? find_stack_direction (addr, depth - 1) : 0;
+  return dir + dummy;
+}
+int
+main (int argc, char *argv)
+{
+  printf ("%d\n", find_stack_direction (NULL, argc + 20));
+  return 0;
+}
+EOF
+          { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+          sv_cv_stack_direction=`./conftest`
+        else
+          sv_cv_stack_direction=0
+        fi
+        ;;
+    esac
+    case $sv_cv_stack_direction in
+      1)  sv_cv_stack_direction_msg="grows up";;
+      -1) sv_cv_stack_direction_msg="grows down";;
+      *)  sv_cv_stack_direction_msg="unknown";;
+    esac
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $sv_cv_stack_direction_msg" >&5
+printf "%s\n" "$sv_cv_stack_direction_msg" >&6; }
+
+printf "%s\n" "#define STACK_DIRECTION $sv_cv_stack_direction" >>confdefs.h
+
+
+
+
+
+
+
+
+  if test "$ac_cv_func_sigaltstack" = yes; then
+    ac_fn_c_check_type "$LINENO" "stack_t" "ac_cv_type_stack_t" "
+#include <signal.h>
+#if HAVE_SYS_SIGNAL_H
+# include <sys/signal.h>
+#endif
+
+"
+if test "x$ac_cv_type_stack_t" = xyes
+then :
+
+else $as_nop
+
+printf "%s\n" "#define stack_t struct sigaltstack" >>confdefs.h
+
+
+fi
+
+  fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working sigaltstack" >&5
+printf %s "checking for working sigaltstack... " >&6; }
+if test ${sv_cv_sigaltstack+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    if test "$ac_cv_func_sigaltstack" = yes; then
+      case "$host_os" in
+        macos* | darwin[6-9]* | darwin[1-9][0-9]*)
+          # On MacOS X 10.2 or newer, just assume that if it compiles, it will
+          # work. If we were to perform the real test, 1 Crash Report dialog
+          # window would pop up.
+          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+            #include <signal.h>
+int
+main (void)
+{
+int x = SA_ONSTACK; stack_t ss; sigaltstack ((stack_t*)0, &ss);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  sv_cv_sigaltstack="guessing yes"
+else $as_nop
+  sv_cv_sigaltstack=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+          ;;
+        *)
+          if test "$cross_compiling" = yes
+then :
+
+                            case "$host_os" in
+                *)
+                  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+                    #include <signal.h>
+int
+main (void)
+{
+int x = SA_ONSTACK; stack_t ss; sigaltstack ((stack_t*)0, &ss);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  sv_cv_sigaltstack="guessing yes"
+else $as_nop
+  sv_cv_sigaltstack=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+                  ;;
+              esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+#include <stdlib.h>
+#include <signal.h>
+#if HAVE_SYS_SIGNAL_H
+# include <sys/signal.h>
+#endif
+#if HAVE_SETRLIMIT
+# include <sys/types.h>
+# include <sys/time.h>
+# include <sys/resource.h>
+#endif
+void stackoverflow_handler (int sig)
+{
+  /* If we get here, the stack overflow was caught.  */
+  exit (0);
+}
+volatile int * recurse_1 (volatile int n, volatile int *p)
+{
+  if (n >= 0)
+    *recurse_1 (n + 1, p) += n;
+  return p;
+}
+int recurse (volatile int n)
+{
+  int sum = 0;
+  return *recurse_1 (n, &sum);
+}
+char mystack[2 * (1 << 24)];
+int main ()
+{
+  stack_t altstack;
+  struct sigaction action;
+#if defined HAVE_SETRLIMIT && defined RLIMIT_STACK
+  /* Before starting the endless recursion, try to be friendly to the user's
+     machine.  On some Linux 2.2.x systems, there is no stack limit for user
+     processes at all.  We don't want to kill such systems.  */
+  struct rlimit rl;
+  rl.rlim_cur = rl.rlim_max = 0x100000; /* 1 MB */
+  setrlimit (RLIMIT_STACK, &rl);
+#endif
+  /* Install the alternate stack.  Use the midpoint of mystack, to guard
+     against a buggy interpretation of ss_sp on IRIX.  */
+#ifdef SIGSTKSZ
+  if (sizeof mystack / 2 < SIGSTKSZ)
+    exit (3);
+#endif
+  altstack.ss_sp = mystack + sizeof mystack / 2;
+  altstack.ss_size = sizeof mystack / 2;
+  altstack.ss_flags = 0; /* no SS_DISABLE */
+  if (sigaltstack (&altstack, NULL) < 0)
+    exit (1);
+  /* Install the SIGSEGV handler.  */
+  sigemptyset (&action.sa_mask);
+  action.sa_handler = &stackoverflow_handler;
+  action.sa_flags = SA_ONSTACK;
+  sigaction (SIGSEGV, &action, (struct sigaction *) NULL);
+  sigaction (SIGBUS, &action, (struct sigaction *) NULL);
+  /* Provoke a stack overflow.  */
+  recurse (0);
+  exit (2);
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  sv_cv_sigaltstack=yes
+else $as_nop
+  sv_cv_sigaltstack=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+          ;;
+      esac
+    else
+      sv_cv_sigaltstack=no
+    fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $sv_cv_sigaltstack" >&5
+printf "%s\n" "$sv_cv_sigaltstack" >&6; }
+  if test "$sv_cv_sigaltstack" != no; then
+
+printf "%s\n" "#define HAVE_WORKING_SIGALTSTACK 1" >>confdefs.h
+
+
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for correct stack_t interpretation" >&5
+printf %s "checking for correct stack_t interpretation... " >&6; }
+if test ${sv_cv_sigaltstack_low_base+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      if test "$cross_compiling" = yes
+then :
+
+                case "$host_os" in
+          irix5*) sv_cv_sigaltstack_low_base="no" ;;
+          *)      sv_cv_sigaltstack_low_base="guessing yes" ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+#include <stdlib.h>
+#include <signal.h>
+#if HAVE_SYS_SIGNAL_H
+# include <sys/signal.h>
+#endif
+volatile char *stack_lower_bound;
+volatile char *stack_upper_bound;
+static void check_stack_location (volatile char *addr)
+{
+  if (addr >= stack_lower_bound && addr <= stack_upper_bound)
+    exit (0);
+  else
+    exit (1);
+}
+static void stackoverflow_handler (int sig)
+{
+  char dummy;
+  check_stack_location (&dummy);
+}
+char mystack[2 * (1 << 24)];
+int main ()
+{
+  stack_t altstack;
+  struct sigaction action;
+  /* Install the alternate stack.  */
+  altstack.ss_sp = mystack + sizeof mystack / 2;
+  altstack.ss_size = sizeof mystack / 2;
+  stack_lower_bound = (char *) altstack.ss_sp;
+  stack_upper_bound = (char *) altstack.ss_sp + altstack.ss_size - 1;
+  altstack.ss_flags = 0; /* no SS_DISABLE */
+  if (sigaltstack (&altstack, NULL) < 0)
+    exit (2);
+  /* Install the SIGSEGV handler.  */
+  sigemptyset (&action.sa_mask);
+  action.sa_handler = &stackoverflow_handler;
+  action.sa_flags = SA_ONSTACK;
+  if (sigaction (SIGSEGV, &action, (struct sigaction *) NULL) < 0)
+    exit(3);
+  /* Provoke a SIGSEGV.  */
+  raise (SIGSEGV);
+  exit (3);
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  sv_cv_sigaltstack_low_base=yes
+else $as_nop
+  sv_cv_sigaltstack_low_base=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $sv_cv_sigaltstack_low_base" >&5
+printf "%s\n" "$sv_cv_sigaltstack_low_base" >&6; }
+    if test "$sv_cv_sigaltstack_low_base" = no; then
+
+printf "%s\n" "#define SIGALTSTACK_SS_REVERSED 1" >>confdefs.h
+
+    fi
+  fi
+
+
+  fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ssize_t" >&5
+printf %s "checking for ssize_t... " >&6; }
+if test ${gt_cv_ssize_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+int
+main (void)
+{
+int x = sizeof (ssize_t *) + sizeof (ssize_t);
+            return !x;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gt_cv_ssize_t=yes
+else $as_nop
+  gt_cv_ssize_t=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_ssize_t" >&5
+printf "%s\n" "$gt_cv_ssize_t" >&6; }
+  if test $gt_cv_ssize_t = no; then
+
+printf "%s\n" "#define ssize_t int" >>confdefs.h
+
+  fi
+
+
+
+
+
+  case "$host_os" in
+    mingw*)
+                  REPLACE_STAT=1
+      ;;
+    *)
+                        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether stat handles trailing slashes on files" >&5
+printf %s "checking whether stat handles trailing slashes on files... " >&6; }
+if test ${gl_cv_func_stat_file_slash+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  touch conftest.tmp
+         # Assume that if we have lstat, we can also check symlinks.
+         if test $ac_cv_func_lstat = yes; then
+           ln -s conftest.tmp conftest.lnk
+         fi
+         if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                               # Guess yes on Linux systems.
+              linux-* | linux) gl_cv_func_stat_file_slash="guessing yes" ;;
+                               # Guess yes on glibc systems.
+              *-gnu* | gnu*)   gl_cv_func_stat_file_slash="guessing yes" ;;
+                               # If we don't know, obey --enable-cross-guesses.
+              *)               gl_cv_func_stat_file_slash="$gl_cross_guess_normal" ;;
+            esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/stat.h>
+
+int
+main (void)
+{
+int result = 0;
+               struct stat st;
+               if (!stat ("conftest.tmp/", &st))
+                 result |= 1;
+#if HAVE_LSTAT
+               if (!stat ("conftest.lnk/", &st))
+                 result |= 2;
+#endif
+               return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_stat_file_slash=yes
+else $as_nop
+  gl_cv_func_stat_file_slash=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+         rm -f conftest.tmp conftest.lnk
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_stat_file_slash" >&5
+printf "%s\n" "$gl_cv_func_stat_file_slash" >&6; }
+      case $gl_cv_func_stat_file_slash in
+        *no)
+          REPLACE_STAT=1
+
+printf "%s\n" "#define REPLACE_FUNC_STAT_FILE 1" >>confdefs.h
+;;
+      esac
+      case $host_os in
+                solaris*)
+          REPLACE_FSTAT=1 ;;
+      esac
+      ;;
+  esac
+
+  if test $REPLACE_STAT = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS stat.$ac_objext"
+
+    case "$host_os" in
+      mingw*)
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS stat-w32.$ac_objext"
+
+        ;;
+    esac
+
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_STAT=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_STAT 1" >>confdefs.h
+
+
+
+
+
+
+
+  ac_fn_c_check_member "$LINENO" "struct stat" "st_atim.tv_nsec" "ac_cv_member_struct_stat_st_atim_tv_nsec" "#include <sys/types.h>
+     #include <sys/stat.h>
+"
+if test "x$ac_cv_member_struct_stat_st_atim_tv_nsec" = xyes
+then :
+
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC 1" >>confdefs.h
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether struct stat.st_atim is of type struct timespec" >&5
+printf %s "checking whether struct stat.st_atim is of type struct timespec... " >&6; }
+if test ${ac_cv_typeof_struct_stat_st_atim_is_struct_timespec+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+            #include <sys/types.h>
+            #include <sys/stat.h>
+            #if HAVE_SYS_TIME_H
+            # include <sys/time.h>
+            #endif
+            #include <time.h>
+            struct timespec ts;
+            struct stat st;
+
+int
+main (void)
+{
+
+            st.st_atim = ts;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=yes
+else $as_nop
+  ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_typeof_struct_stat_st_atim_is_struct_timespec" >&5
+printf "%s\n" "$ac_cv_typeof_struct_stat_st_atim_is_struct_timespec" >&6; }
+     if test $ac_cv_typeof_struct_stat_st_atim_is_struct_timespec = yes; then
+
+printf "%s\n" "#define TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC 1" >>confdefs.h
+
+     fi
+else $as_nop
+  ac_fn_c_check_member "$LINENO" "struct stat" "st_atimespec.tv_nsec" "ac_cv_member_struct_stat_st_atimespec_tv_nsec" "#include <sys/types.h>
+        #include <sys/stat.h>
+"
+if test "x$ac_cv_member_struct_stat_st_atimespec_tv_nsec" = xyes
+then :
+
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC 1" >>confdefs.h
+
+
+else $as_nop
+  ac_fn_c_check_member "$LINENO" "struct stat" "st_atimensec" "ac_cv_member_struct_stat_st_atimensec" "#include <sys/types.h>
+           #include <sys/stat.h>
+"
+if test "x$ac_cv_member_struct_stat_st_atimensec" = xyes
+then :
+
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_ATIMENSEC 1" >>confdefs.h
+
+
+else $as_nop
+  ac_fn_c_check_member "$LINENO" "struct stat" "st_atim.st__tim.tv_nsec" "ac_cv_member_struct_stat_st_atim_st__tim_tv_nsec" "#include <sys/types.h>
+              #include <sys/stat.h>
+"
+if test "x$ac_cv_member_struct_stat_st_atim_st__tim_tv_nsec" = xyes
+then :
+
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC 1" >>confdefs.h
+
+
+fi
+
+fi
+
+fi
+
+fi
+
+
+
+
+
+  ac_fn_c_check_member "$LINENO" "struct stat" "st_birthtimespec.tv_nsec" "ac_cv_member_struct_stat_st_birthtimespec_tv_nsec" "#include <sys/types.h>
+     #include <sys/stat.h>
+"
+if test "x$ac_cv_member_struct_stat_st_birthtimespec_tv_nsec" = xyes
+then :
+
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC 1" >>confdefs.h
+
+
+else $as_nop
+  ac_fn_c_check_member "$LINENO" "struct stat" "st_birthtimensec" "ac_cv_member_struct_stat_st_birthtimensec" "#include <sys/types.h>
+        #include <sys/stat.h>
+"
+if test "x$ac_cv_member_struct_stat_st_birthtimensec" = xyes
+then :
+
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC 1" >>confdefs.h
+
+
+else $as_nop
+  ac_fn_c_check_member "$LINENO" "struct stat" "st_birthtim.tv_nsec" "ac_cv_member_struct_stat_st_birthtim_tv_nsec" "#include <sys/types.h>
+          #include <sys/stat.h>
+"
+if test "x$ac_cv_member_struct_stat_st_birthtim_tv_nsec" = xyes
+then :
+
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC 1" >>confdefs.h
+
+
+fi
+
+fi
+
+fi
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working stdalign.h" >&5
+printf %s "checking for working stdalign.h... " >&6; }
+if test ${gl_cv_header_working_stdalign_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdint.h>
+            #include <stdalign.h>
+            #include <stddef.h>
+
+            /* Test that alignof yields a result consistent with offsetof.
+               This catches GCC bug 52023
+               <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52023>.  */
+            #ifdef __cplusplus
+               template <class t> struct alignof_helper { char a; t b; };
+            # define ao(type) offsetof (alignof_helper<type>, b)
+            #else
+            # define ao(type) offsetof (struct { char a; type b; }, b)
+            #endif
+            char test_double[ao (double) % _Alignof (double) == 0 ? 1 : -1];
+            char test_long[ao (long int) % _Alignof (long int) == 0 ? 1 : -1];
+            char test_alignof[alignof (double) == _Alignof (double) ? 1 : -1];
+
+            /* Test _Alignas only on platforms where gnulib can help.  */
+            #if \
+                ((defined __cplusplus && 201103 <= __cplusplus) \
+                 || (__TINYC__ && defined __attribute__) \
+                 || (defined __APPLE__ && defined __MACH__ \
+                     ? 4 < __GNUC__ + (1 <= __GNUC_MINOR__) \
+                     : __GNUC__) \
+                 || (__ia64 && (61200 <= __HP_cc || 61200 <= __HP_aCC)) \
+                 || __ICC || 0x590 <= __SUNPRO_C || 0x0600 <= __xlC__ \
+                 || 1300 <= _MSC_VER)
+              struct alignas_test { char c; char alignas (8) alignas_8; };
+              char test_alignas[offsetof (struct alignas_test, alignas_8) == 8
+                                ? 1 : -1];
+            #endif
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_working_stdalign_h=yes
+else $as_nop
+  gl_cv_header_working_stdalign_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_working_stdalign_h" >&5
+printf "%s\n" "$gl_cv_header_working_stdalign_h" >&6; }
+
+  if test $gl_cv_header_working_stdalign_h = yes; then
+    STDALIGN_H=''
+  else
+    STDALIGN_H='stdalign.h'
+  fi
+
+
+   if test -n "$STDALIGN_H"; then
+  GL_GENERATE_STDALIGN_H_TRUE=
+  GL_GENERATE_STDALIGN_H_FALSE='#'
+else
+  GL_GENERATE_STDALIGN_H_TRUE='#'
+  GL_GENERATE_STDALIGN_H_FALSE=
+fi
+
+
+
+  STDARG_H=''
+  NEXT_STDARG_H='<stdarg.h>'
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for va_copy" >&5
+printf %s "checking for va_copy... " >&6; }
+if test ${gl_cv_func_va_copy+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdarg.h>
+int
+main (void)
+{
+
+#ifndef va_copy
+void (*func) (va_list, va_list) = va_copy;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_va_copy=yes
+else $as_nop
+  gl_cv_func_va_copy=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_va_copy" >&5
+printf "%s\n" "$gl_cv_func_va_copy" >&6; }
+  if test $gl_cv_func_va_copy = no; then
+                                    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined _AIX && !defined __GNUC__
+        AIX vaccine
+       #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "vaccine" >/dev/null 2>&1
+then :
+  gl_aixcc=yes
+else $as_nop
+  gl_aixcc=no
+fi
+rm -rf conftest*
+
+    if test $gl_aixcc = yes; then
+            STDARG_H=stdarg.h
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_stdarg_h='<'stdarg.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <stdarg.h>" >&5
+printf %s "checking absolute name of <stdarg.h>... " >&6; }
+if test ${gl_cv_next_stdarg_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdarg.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'stdarg.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_stdarg_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_stdarg_h
+           gl_cv_next_stdarg_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_stdarg_h" >&5
+printf "%s\n" "$gl_cv_next_stdarg_h" >&6; }
+     fi
+     NEXT_STDARG_H=$gl_cv_next_stdarg_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'stdarg.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_stdarg_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_STDARG_H=$gl_next_as_first_directive
+
+
+
+
+            if test "$gl_cv_next_stdarg_h" = '""'; then
+        gl_cv_next_stdarg_h='"///usr/include/stdarg.h"'
+        NEXT_STDARG_H="$gl_cv_next_stdarg_h"
+      fi
+    else
+
+
+  exec 9>&6 6>/dev/null
+
+    if test ${gl_cv_func___va_copy+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdarg.h>
+int
+main (void)
+{
+
+#ifndef __va_copy
+error, bail out
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func___va_copy=yes
+else $as_nop
+  gl_cv_func___va_copy=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+  exec 6>&9 9>&-
+
+
+      if test $gl_cv_func___va_copy = yes; then
+
+printf "%s\n" "#define va_copy __va_copy" >>confdefs.h
+
+      else
+
+
+printf "%s\n" "#define va_copy gl_va_copy" >>confdefs.h
+
+      fi
+    fi
+  fi
+
+   if test -n "$STDARG_H"; then
+  GL_GENERATE_STDARG_H_TRUE=
+  GL_GENERATE_STDARG_H_FALSE='#'
+else
+  GL_GENERATE_STDARG_H_TRUE='#'
+  GL_GENERATE_STDARG_H_FALSE=
+fi
+
+
+
+
+
+
+
+          if test "$ac_cv_header_stdbool_h" = yes; then
+    case "$host_os" in
+      solaris*)
+        if test -z "$GCC"; then
+          STDBOOL_H='stdbool.h'
+        else
+          STDBOOL_H=''
+        fi
+        ;;
+      *)
+        STDBOOL_H=''
+        ;;
+    esac
+  else
+    STDBOOL_H='stdbool.h'
+  fi
+
+   if test -n "$STDBOOL_H"; then
+  GL_GENERATE_STDBOOL_H_TRUE=
+  GL_GENERATE_STDBOOL_H_FALSE='#'
+else
+  GL_GENERATE_STDBOOL_H_TRUE='#'
+  GL_GENERATE_STDBOOL_H_FALSE=
+fi
+
+
+  if test "$ac_cv_type__Bool" = yes; then
+    HAVE__BOOL=1
+  else
+    HAVE__BOOL=0
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FSCANF=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FSCANF 1" >>confdefs.h
+
+
+
+
+
+printf "%s\n" "#define GNULIB_FSCANF 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_SCANF=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_SCANF 1" >>confdefs.h
+
+
+
+
+
+printf "%s\n" "#define GNULIB_SCANF 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FGETC=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FGETC 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_GETC=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_GETC 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_GETCHAR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_GETCHAR 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FGETS=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FGETS 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FREAD=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FREAD 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FPRINTF=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FPRINTF 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_PRINTF=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_PRINTF 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_VFPRINTF=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_VFPRINTF 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_VPRINTF=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_VPRINTF 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FPUTC=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FPUTC 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_PUTC=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_PUTC 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_PUTCHAR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_PUTCHAR 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FPUTS=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FPUTS 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_PUTS=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_PUTS 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_FWRITE=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FWRITE 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "stpcpy" "ac_cv_func_stpcpy"
+if test "x$ac_cv_func_stpcpy" = xyes
+then :
+  printf "%s\n" "#define HAVE_STPCPY 1" >>confdefs.h
+
+fi
+
+  if test $ac_cv_func_stpcpy = no; then
+    HAVE_STPCPY=0
+  fi
+
+  if test $HAVE_STPCPY = 0; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS stpcpy.$ac_objext"
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_STPCPY=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_STPCPY 1" >>confdefs.h
+
+
+
+
+
+
+  if test $gl_cv_func_malloc_posix != yes; then
+    REPLACE_STRDUP=1
+  fi
+
+  if test $ac_cv_have_decl_strdup = no; then
+    HAVE_DECL_STRDUP=0
+  fi
+
+  if test $REPLACE_STRDUP = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS strdup.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_STRDUP=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_STRDUP 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+  if test "$ERRNO_H:$REPLACE_STRERROR_0" = :0; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working strerror function" >&5
+printf %s "checking for working strerror function... " >&6; }
+if test ${gl_cv_func_working_strerror+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                          # Guess yes on glibc systems.
+           *-gnu* | gnu*) gl_cv_func_working_strerror="guessing yes" ;;
+                          # Guess yes on musl systems.
+           *-musl*)       gl_cv_func_working_strerror="guessing yes" ;;
+                          # If we don't know, obey --enable-cross-guesses.
+           *)             gl_cv_func_working_strerror="$gl_cross_guess_normal" ;;
+         esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <string.h>
+
+int
+main (void)
+{
+if (!*strerror (-2)) return 1;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_working_strerror=yes
+else $as_nop
+  gl_cv_func_working_strerror=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_working_strerror" >&5
+printf "%s\n" "$gl_cv_func_working_strerror" >&6; }
+    case "$gl_cv_func_working_strerror" in
+      *yes) ;;
+      *)
+                        REPLACE_STRERROR=1
+        ;;
+    esac
+
+                  case "$gl_cv_func_strerror_r_works" in
+        *no) REPLACE_STRERROR=1 ;;
+      esac
+
+  else
+            REPLACE_STRERROR=1
+  fi
+
+  if test $REPLACE_STRERROR = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS strerror.$ac_objext"
+
+  fi
+
+
+printf "%s\n" "#define GNULIB_STRERROR 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_STRERROR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_STRERROR 1" >>confdefs.h
+
+
+
+
+
+  if test -n "$ERRNO_H" || test $REPLACE_STRERROR_0 = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS strerror-override.$ac_objext"
+
+
+
+
+
+  if test $ac_cv_header_sys_socket_h != yes; then
+                    ac_fn_c_check_header_compile "$LINENO" "winsock2.h" "ac_cv_header_winsock2_h" "$ac_includes_default"
+if test "x$ac_cv_header_winsock2_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_WINSOCK2_H 1" >>confdefs.h
+
+fi
+
+  fi
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    HAVE_WINSOCK2_H=1
+    UNISTD_H_HAVE_WINSOCK2_H=1
+    SYS_IOCTL_H_HAVE_WINSOCK2_H=1
+  else
+    HAVE_WINSOCK2_H=0
+  fi
+
+
+  fi
+  if test $gl_cond_libtool = false; then
+    gl_ltlibdeps="$gl_ltlibdeps $LTLIBICONV"
+    gl_libdeps="$gl_libdeps $LIBICONV"
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+  if test $ac_cv_have_decl_strnlen = no; then
+    HAVE_DECL_STRNLEN=0
+  else
+
+         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working strnlen" >&5
+printf %s "checking for working strnlen... " >&6; }
+if test ${ac_cv_func_strnlen_working+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  # Guess no on AIX systems, yes otherwise.
+		case "$host_os" in
+		  aix*) ac_cv_func_strnlen_working=no;;
+		  *)    ac_cv_func_strnlen_working=yes;;
+		esac
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main (void)
+{
+
+#define S "foobar"
+#define S_LEN (sizeof S - 1)
+
+  /* At least one implementation is buggy: that of AIX 4.3 would
+     give strnlen (S, 1) == 3.  */
+
+  int i;
+  for (i = 0; i < S_LEN + 1; ++i)
+    {
+      int expected = i <= S_LEN ? i : S_LEN;
+      if (strnlen (S, i) != expected)
+	return 1;
+    }
+  return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  ac_cv_func_strnlen_working=yes
+else $as_nop
+  ac_cv_func_strnlen_working=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_strnlen_working" >&5
+printf "%s\n" "$ac_cv_func_strnlen_working" >&6; }
+test $ac_cv_func_strnlen_working = no && :
+
+
+    if test $ac_cv_func_strnlen_working = no; then
+      REPLACE_STRNLEN=1
+    fi
+  fi
+
+  if test $HAVE_DECL_STRNLEN = 0 || test $REPLACE_STRNLEN = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS strnlen.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_STRNLEN=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_STRNLEN 1" >>confdefs.h
+
+
+
+
+
+  if test $REPLACE_STRSTR = 0; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether strstr works in linear time" >&5
+printf %s "checking whether strstr works in linear time... " >&6; }
+if test ${gl_cv_func_strstr_linear+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+                             cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ > 12) || (__GLIBC__ > 2)) \
+     && !(defined __i386__ || defined __x86_64__) \
+     && !defined __UCLIBC__
+  Lucky user
+ #endif
+#endif
+#ifdef __CYGWIN__
+ #include <cygwin/version.h>
+ #if CYGWIN_VERSION_DLL_COMBINED > CYGWIN_VERSION_DLL_MAKE_COMBINED (1007, 7)
+  Lucky user
+ #endif
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Lucky user" >/dev/null 2>&1
+then :
+  gl_cv_func_strstr_linear="guessing yes"
+else $as_nop
+  gl_cv_func_strstr_linear="$gl_cross_guess_normal"
+fi
+rm -rf conftest*
+
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#ifdef __MVS__
+/* z/OS does not deliver signals while strstr() is running (thanks to
+   restrictions on its LE runtime), which prevents us from limiting the
+   running time of this test.  */
+# error "This test does not work properly on z/OS"
+#endif
+#include <signal.h> /* for signal */
+#include <string.h> /* for strstr */
+#include <stdlib.h> /* for malloc */
+#include <unistd.h> /* for alarm */
+static void quit (int sig) { _exit (sig + 128); }
+
+int
+main (void)
+{
+
+    int result = 0;
+    size_t m = 1000000;
+    char *haystack = (char *) malloc (2 * m + 2);
+    char *needle = (char *) malloc (m + 2);
+    /* Failure to compile this test due to missing alarm is okay,
+       since all such platforms (mingw) also have quadratic strstr.  */
+    signal (SIGALRM, quit);
+    alarm (5);
+    /* Check for quadratic performance.  */
+    if (haystack && needle)
+      {
+        memset (haystack, 'A', 2 * m);
+        haystack[2 * m] = 'B';
+        haystack[2 * m + 1] = 0;
+        memset (needle, 'A', m);
+        needle[m] = 'B';
+        needle[m + 1] = 0;
+        if (!strstr (haystack, needle))
+          result |= 1;
+      }
+    /* Free allocated memory, in case some sanitizer is watching.  */
+    free (haystack);
+    free (needle);
+    return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_strstr_linear=yes
+else $as_nop
+  gl_cv_func_strstr_linear=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_strstr_linear" >&5
+printf "%s\n" "$gl_cv_func_strstr_linear" >&6; }
+    case "$gl_cv_func_strstr_linear" in
+      *yes) ;;
+      *)
+        REPLACE_STRSTR=1
+        ;;
+    esac
+  fi
+
+  if test $REPLACE_STRSTR = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS strstr.$ac_objext"
+
+  fi
+
+
+
+  if test $REPLACE_MEMCHR = 1; then
+    REPLACE_STRSTR=1
+  else
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether strstr works" >&5
+printf %s "checking whether strstr works... " >&6; }
+if test ${gl_cv_func_strstr_works_always+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+                                                    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <string.h> /* for __GNU_LIBRARY__ */
+#ifdef __GNU_LIBRARY__
+ #include <features.h>
+ #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ > 12) || (__GLIBC__ > 2)) \
+     || defined __UCLIBC__
+  Lucky user
+ #endif
+#elif defined __CYGWIN__
+ #include <cygwin/version.h>
+ #if CYGWIN_VERSION_DLL_COMBINED > CYGWIN_VERSION_DLL_MAKE_COMBINED (1007, 7)
+  Lucky user
+ #endif
+#else
+  Lucky user
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Lucky user" >/dev/null 2>&1
+then :
+  gl_cv_func_strstr_works_always="guessing yes"
+else $as_nop
+  gl_cv_func_strstr_works_always="$gl_cross_guess_normal"
+fi
+rm -rf conftest*
+
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <string.h> /* for __GNU_LIBRARY__, strstr */
+#ifdef __GNU_LIBRARY__
+ #include <features.h>
+ #if __GLIBC__ == 2 && __GLIBC_MINOR__ == 28
+  Unlucky user
+ #endif
+#endif
+#define P "_EF_BF_BD"
+#define HAYSTACK "F_BD_CE_BD" P P P P "_C3_88_20" P P P "_C3_A7_20" P
+#define NEEDLE P P P P P
+
+int
+main (void)
+{
+return !!strstr (HAYSTACK, NEEDLE);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_strstr_works_always=yes
+else $as_nop
+  gl_cv_func_strstr_works_always=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_strstr_works_always" >&5
+printf "%s\n" "$gl_cv_func_strstr_works_always" >&6; }
+    case "$gl_cv_func_strstr_works_always" in
+      *yes) ;;
+      *)
+        REPLACE_STRSTR=1
+        ;;
+    esac
+  fi
+
+  if test $REPLACE_STRSTR = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS strstr.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_STRSTR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_STRSTR 1" >>confdefs.h
+
+
+
+
+
+
+
+
+  if test "$ac_cv_have_decl_strtoimax" != yes; then
+    HAVE_DECL_STRTOIMAX=0
+  fi
+
+  if test "$ac_cv_func_strtoimax" = yes; then
+    HAVE_STRTOIMAX=1
+             { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether strtoimax works" >&5
+printf %s "checking whether strtoimax works... " >&6; }
+if test ${gl_cv_func_strtoimax+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                    # Guess no on AIX 5.
+            aix5*)  gl_cv_func_strtoimax="guessing no" ;;
+                    # Guess yes on native Windows.
+            mingw*) gl_cv_func_strtoimax="guessing yes" ;;
+                    # Guess yes otherwise.
+            *)      gl_cv_func_strtoimax="guessing yes" ;;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <errno.h>
+#include <string.h>
+#include <inttypes.h>
+int main ()
+{
+  if (sizeof (intmax_t) > sizeof (int))
+    {
+      const char *s = "4294967295";
+      char *p;
+      intmax_t res;
+      errno = 0;
+      res = strtoimax (s, &p, 10);
+      if (p != s + strlen (s))
+        return 1;
+      if (errno != 0)
+        return 2;
+      if (res != (intmax_t) 65535 * (intmax_t) 65537)
+        return 3;
+    }
+  else
+    {
+      const char *s = "2147483647";
+      char *p;
+      intmax_t res;
+      errno = 0;
+      res = strtoimax (s, &p, 10);
+      if (p != s + strlen (s))
+        return 1;
+      if (errno != 0)
+        return 2;
+      if (res != 2147483647)
+        return 3;
+    }
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_strtoimax=yes
+else $as_nop
+  gl_cv_func_strtoimax=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_strtoimax" >&5
+printf "%s\n" "$gl_cv_func_strtoimax" >&6; }
+    case "$gl_cv_func_strtoimax" in
+      *no) REPLACE_STRTOIMAX=1 ;;
+    esac
+  else
+    if test "$ac_cv_have_decl_strtoimax" = yes; then
+      # HP-UX 11.11 has "#define strtoimax(...) ..." but no function.
+      REPLACE_STRTOIMAX=1
+    fi
+    HAVE_STRTOIMAX=0
+  fi
+
+  if test $HAVE_DECL_STRTOIMAX = 0 || test $REPLACE_STRTOIMAX = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS strtoimax.$ac_objext"
+
+
+  ac_fn_check_decl "$LINENO" "strtoll" "ac_cv_have_decl_strtoll" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_strtoll" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_STRTOLL $ac_have_decl" >>confdefs.h
+
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_STRTOIMAX=1
+
+
+
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "strtoll" "ac_cv_func_strtoll"
+if test "x$ac_cv_func_strtoll" = xyes
+then :
+  printf "%s\n" "#define HAVE_STRTOLL 1" >>confdefs.h
+
+fi
+
+  if test $ac_cv_func_strtoll = yes; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether strtoll works" >&5
+printf %s "checking whether strtoll works... " >&6; }
+if test ${gl_cv_func_strtoll_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                    # Guess no on native Windows.
+            mingw*) gl_cv_func_strtoll_works="guessing no" ;;
+            *)      gl_cv_func_strtoll_works="$gl_cross_guess_normal" ;;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main (void)
+{
+int result = 0;
+              char *term;
+              /* This test fails on Minix and native Windows.  */
+              {
+                const char input[] = "0x";
+                (void) strtoll (input, &term, 16);
+                if (term != input + 1)
+                  result |= 1;
+              }
+              return result;
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_strtoll_works=yes
+else $as_nop
+  gl_cv_func_strtoll_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_strtoll_works" >&5
+printf "%s\n" "$gl_cv_func_strtoll_works" >&6; }
+    case "$gl_cv_func_strtoll_works" in
+      *yes) ;;
+      *)    REPLACE_STRTOLL=1 ;;
+    esac
+  else
+    HAVE_STRTOLL=0
+  fi
+
+  if test $HAVE_STRTOLL = 0 || test $REPLACE_STRTOLL = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS strtoll.$ac_objext"
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_STRTOLL=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_STRTOLL 1" >>confdefs.h
+
+
+
+
+
+
+  ac_fn_c_check_func "$LINENO" "strtoull" "ac_cv_func_strtoull"
+if test "x$ac_cv_func_strtoull" = xyes
+then :
+  printf "%s\n" "#define HAVE_STRTOULL 1" >>confdefs.h
+
+fi
+
+  if test $ac_cv_func_strtoull = yes; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether strtoull works" >&5
+printf %s "checking whether strtoull works... " >&6; }
+if test ${gl_cv_func_strtoull_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                    # Guess no on native Windows.
+            mingw*) gl_cv_func_strtoull_works="guessing no" ;;
+            *)      gl_cv_func_strtoull_works="$gl_cross_guess_normal" ;;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main (void)
+{
+int result = 0;
+              char *term;
+              /* This test fails on Minix and native Windows.  */
+              {
+                const char input[] = "0x";
+                (void) strtoull (input, &term, 16);
+                if (term != input + 1)
+                  result |= 1;
+              }
+              return result;
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_strtoull_works=yes
+else $as_nop
+  gl_cv_func_strtoull_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_strtoull_works" >&5
+printf "%s\n" "$gl_cv_func_strtoull_works" >&6; }
+    case "$gl_cv_func_strtoull_works" in
+      *yes) ;;
+      *)    REPLACE_STRTOULL=1 ;;
+    esac
+  else
+    HAVE_STRTOULL=0
+  fi
+
+  if test $HAVE_STRTOULL = 0 || test $REPLACE_STRTOULL = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS strtoull.$ac_objext"
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_STRTOULL=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_STRTOULL 1" >>confdefs.h
+
+
+
+
+
+
+
+
+  if test "$ac_cv_have_decl_strtoumax" = yes; then
+    if test "$ac_cv_func_strtoumax" != yes; then
+      # HP-UX 11.11 has "#define strtoimax(...) ..." but no function.
+      REPLACE_STRTOUMAX=1
+    fi
+  else
+    HAVE_DECL_STRTOUMAX=0
+  fi
+
+  if test $HAVE_DECL_STRTOUMAX = 0 || test $REPLACE_STRTOUMAX = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS strtoumax.$ac_objext"
+
+
+  ac_fn_check_decl "$LINENO" "strtoull" "ac_cv_have_decl_strtoull" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_strtoull" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_STRTOULL $ac_have_decl" >>confdefs.h
+
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_STRTOUMAX=1
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+      if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 11
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+    LIBUNISTRING_UNISTR_H='unistr.h'
+  else
+    LIBUNISTRING_UNISTR_H=
+  fi
+
+
+
+
+printf "%s\n" "#define GNULIB_UNISTR_U8_MBTOUCR 1" >>confdefs.h
+
+
+
+
+       if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNISTR_U8_MBTOUCR_TRUE=
+  LIBUNISTRING_COMPILE_UNISTR_U8_MBTOUCR_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNISTR_U8_MBTOUCR_TRUE='#'
+  LIBUNISTRING_COMPILE_UNISTR_U8_MBTOUCR_FALSE=
+fi
+
+
+
+
+printf "%s\n" "#define GNULIB_UNISTR_U8_UCTOMB 1" >>confdefs.h
+
+
+
+
+       if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 0
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNISTR_U8_UCTOMB_TRUE=
+  LIBUNISTRING_COMPILE_UNISTR_U8_UCTOMB_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNISTR_U8_UCTOMB_TRUE='#'
+  LIBUNISTRING_COMPILE_UNISTR_U8_UCTOMB_FALSE=
+fi
+
+
+
+
+      if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 11
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+    LIBUNISTRING_UNITYPES_H='unitypes.h'
+  else
+    LIBUNISTRING_UNITYPES_H=
+  fi
+
+
+
+
+
+      if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 11
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+    LIBUNISTRING_UNIWIDTH_H='uniwidth.h'
+  else
+    LIBUNISTRING_UNIWIDTH_H=
+  fi
+
+
+
+
+       if  { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+
+
+
+            test $LIBUNISTRING_VERSION_MAJOR -lt 0 \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq 0 \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt 9 \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq 9 \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt 8
+                         }
+                    }
+               }
+
+
+
+
+       }
+  }; then
+  LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH_TRUE=
+  LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH_FALSE='#'
+else
+  LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH_TRUE='#'
+  LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH_FALSE=
+fi
+
+
+
+printf "%s\n" "#define GNULIB_STDIO_SINGLE_THREAD 1" >>confdefs.h
+
+
+printf "%s\n" "#define USE_UNLOCKED_IO GNULIB_STDIO_SINGLE_THREAD" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# Check whether --with-packager was given.
+if test ${with_packager+y}
+then :
+  withval=$with_packager;       case $withval in
+        yes|no) ;;
+        *)
+printf "%s\n" "#define PACKAGE_PACKAGER \"$withval\"" >>confdefs.h
+ ;;
+      esac
+
+fi
+
+
+
+# Check whether --with-packager-version was given.
+if test ${with_packager_version+y}
+then :
+  withval=$with_packager_version;       case $withval in
+        yes|no) ;;
+        *)
+printf "%s\n" "#define PACKAGE_PACKAGER_VERSION \"$withval\"" >>confdefs.h
+ ;;
+      esac
+
+fi
+
+
+
+# Check whether --with-packager-bug-reports was given.
+if test ${with_packager_bug_reports+y}
+then :
+  withval=$with_packager_bug_reports;       case $withval in
+        yes|no) ;;
+        *)
+printf "%s\n" "#define PACKAGE_PACKAGER_BUG_REPORTS \"$withval\"" >>confdefs.h
+ ;;
+      esac
+
+fi
+
+
+  if test "X$with_packager" = "X" && \
+     test "X$with_packager_version$with_packager_bug_reports" != "X"
+  then
+    as_fn_error $? "The --with-packager-{bug-reports,version} options require --with-packager" "$LINENO" 5
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+        if case "$host_os" in
+       mingw*) true ;;
+       *) test $ac_cv_func_mbsinit = yes ;;
+     esac \
+    && test $ac_cv_func_mbrtowc = yes; then
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc handles incomplete characters" >&5
+printf %s "checking whether mbrtowc handles incomplete characters... " >&6; }
+if test ${gl_cv_func_mbrtowc_incomplete_state+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                     # Guess no on AIX and OSF/1.
+        aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;
+                     # Guess yes otherwise.
+        *)           gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;
+      esac
+      if test $LOCALE_JA != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_incomplete_state=yes
+else $as_nop
+  gl_cv_func_mbrtowc_incomplete_state=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      else
+        if test $LOCALE_FR_UTF8 != none; then
+          if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      const char input[] = "B\303\274\303\237er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_incomplete_state=yes
+else $as_nop
+  gl_cv_func_mbrtowc_incomplete_state=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        fi
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_incomplete_state" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_incomplete_state" >&6; }
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mbrtowc works as well as mbtowc" >&5
+printf %s "checking whether mbrtowc works as well as mbtowc... " >&6; }
+if test ${gl_cv_func_mbrtowc_sanitycheck+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  case "$host_os" in
+                    # Guess no on Solaris 8.
+        solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;
+                    # Guess yes otherwise.
+        *)          gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;
+      esac
+      if test $LOCALE_ZH_CN != none; then
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  /* This fails on Solaris 8:
+     mbrtowc returns 2, and sets wc to 0x00F0.
+     mbtowc returns 4 (correct) and sets wc to 0x5EDC.  */
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 6, &state) != 4
+          && mbtowc (&wc, input + 3, 6) == 4)
+        return 2;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_mbrtowc_sanitycheck=yes
+else $as_nop
+  gl_cv_func_mbrtowc_sanitycheck=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_mbrtowc_sanitycheck" >&5
+printf "%s\n" "$gl_cv_func_mbrtowc_sanitycheck" >&6; }
+
+    REPLACE_MBSTATE_T=0
+    case "$gl_cv_func_mbrtowc_incomplete_state" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+    case "$gl_cv_func_mbrtowc_sanitycheck" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+  else
+    REPLACE_MBSTATE_T=1
+  fi
+
+
+
+  if test $ac_cv_func_wcrtomb = no; then
+    HAVE_WCRTOMB=0
+    ac_fn_check_decl "$LINENO" "wcrtomb" "ac_cv_have_decl_wcrtomb" "
+      #include <wchar.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_wcrtomb" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_WCRTOMB $ac_have_decl" >>confdefs.h
+
+    if test $ac_cv_have_decl_wcrtomb = yes; then
+                        REPLACE_WCRTOMB=1
+    fi
+  else
+                        if test $REPLACE_WCRTOMB = 0; then
+
+
+
+
+
+             { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether wcrtomb works in the C locale" >&5
+printf %s "checking whether wcrtomb works in the C locale... " >&6; }
+if test ${gl_cv_func_wcrtomb_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                               # Guess no on Android.
+              linux*-android*) gl_cv_func_wcrtomb_works="guessing no";;
+                               # Guess yes otherwise.
+              *)               gl_cv_func_wcrtomb_works="guessing yes";;
+            esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <string.h>
+#include <stdlib.h>
+#include <wchar.h>
+int main ()
+{
+  mbstate_t state;
+  char out[64];
+  int count;
+  memset (&state, 0, sizeof (state));
+  out[0] = 'x';
+  count = wcrtomb (out, L'a', &state);
+  return !(count == 1 && out[0] == 'a');
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_wcrtomb_works=yes
+else $as_nop
+  gl_cv_func_wcrtomb_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_wcrtomb_works" >&5
+printf "%s\n" "$gl_cv_func_wcrtomb_works" >&6; }
+      case "$gl_cv_func_wcrtomb_works" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define WCRTOMB_C_LOCALE_BUG 1" >>confdefs.h
+
+           REPLACE_WCRTOMB=1 ;;
+      esac
+    fi
+    if test $REPLACE_WCRTOMB = 0; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether wcrtomb return value is correct" >&5
+printf %s "checking whether wcrtomb return value is correct... " >&6; }
+if test ${gl_cv_func_wcrtomb_retval+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                              case "$host_os" in
+            # Guess no on AIX 4, OSF/1, Solaris, native Windows.
+            aix4* | osf* | solaris* | mingw*) gl_cv_func_wcrtomb_retval="guessing no" ;;
+            # Guess yes otherwise.
+            *)                                gl_cv_func_wcrtomb_retval="guessing yes" ;;
+          esac
+          if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
+            if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+#include <stdlib.h>
+int main ()
+{
+  int result = 0;
+  if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+    {
+      if (wcrtomb (NULL, 0, NULL) != 1)
+        result |= 1;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      if (wcrtomb (NULL, 0, NULL) != 1)
+        result |= 2;
+      {
+        wchar_t wc = (wchar_t) 0xBADFACE;
+        if (mbtowc (&wc, "\303\274", 2) == 2)
+          if (wcrtomb (NULL, wc, NULL) != 1)
+            result |= 2;
+      }
+    }
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      if (wcrtomb (NULL, 0, NULL) != 1)
+        result |= 4;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      if (wcrtomb (NULL, 0, NULL) != 1)
+        result |= 8;
+    }
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_wcrtomb_retval=yes
+else $as_nop
+  gl_cv_func_wcrtomb_retval=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+          fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_wcrtomb_retval" >&5
+printf "%s\n" "$gl_cv_func_wcrtomb_retval" >&6; }
+      case "$gl_cv_func_wcrtomb_retval" in
+        *yes) ;;
+        *)
+printf "%s\n" "#define WCRTOMB_RETVAL_BUG 1" >>confdefs.h
+
+           REPLACE_WCRTOMB=1 ;;
+      esac
+    fi
+  fi
+
+  if test $HAVE_WCRTOMB = 0 || test $REPLACE_WCRTOMB = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS wcrtomb.$ac_objext"
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_WCRTOMB=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_WCRTOMB 1" >>confdefs.h
+
+
+
+
+
+
+
+  if test $ac_cv_func_wctob = no; then
+    HAVE_WCTOB=0
+    HAVE_DECL_WCTOB=0
+  else
+    HAVE_WCTOB=1
+
+
+
+         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether wctob works" >&5
+printf %s "checking whether wctob works... " >&6; }
+if test ${gl_cv_func_wctob_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                        case "$host_os" in
+            # Guess no on Solaris <= 9 and Cygwin.
+          solaris2.[1-9] | solaris2.[1-9].* | cygwin*)
+            gl_cv_func_wctob_works="guessing no" ;;
+            # Guess no on native Windows.
+          mingw*)
+            gl_cv_func_wctob_works="guessing no" ;;
+            # Guess yes otherwise.
+          *) gl_cv_func_wctob_works="guessing yes" ;;
+        esac
+        case "$host_os" in
+          cygwin*)
+            if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <wchar.h>
+
+register long global __asm__ ("%ebx");
+
+int main ()
+{
+  setlocale (LC_ALL, "en_US.UTF-8");
+
+  global = 0x12345678;
+  if (wctob (0x00FC) != -1)
+    return 1;
+  if (global != 0x12345678)
+    return 2;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  :
+else $as_nop
+  gl_cv_func_wctob_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+            ;;
+        esac
+        if test "$gl_cv_func_wctob_works" != no && test $LOCALE_FR != none; then
+          if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+    {
+      wchar_t wc;
+
+      if (mbtowc (&wc, "\374", 1) == 1)
+        if (wctob (wc) != (unsigned char) '\374')
+          return 1;
+    }
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_wctob_works=yes
+else $as_nop
+  gl_cv_func_wctob_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_wctob_works" >&5
+printf "%s\n" "$gl_cv_func_wctob_works" >&6; }
+    case "$gl_cv_func_wctob_works" in
+      *yes) ;;
+      *) REPLACE_WCTOB=1 ;;
+    esac
+    if test $REPLACE_WCTOB = 0; then
+
+            ac_fn_check_decl "$LINENO" "wctob" "ac_cv_have_decl_wctob" "
+        #include <wchar.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_wctob" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_WCTOB $ac_have_decl" >>confdefs.h
+
+      if test $ac_cv_have_decl_wctob != yes; then
+        HAVE_DECL_WCTOB=0
+      fi
+    fi
+  fi
+
+  if test $HAVE_WCTOB = 0 || test $REPLACE_WCTOB = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS wctob.$ac_objext"
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_WCTOB=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_WCTOB 1" >>confdefs.h
+
+
+
+
+
+
+  if false; then
+    REPLACE_WCTOMB=1
+  fi
+
+  if test $REPLACE_WCTOMB = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS wctomb.$ac_objext"
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_WCTOMB=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_WCTOMB 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  ac_fn_check_decl "$LINENO" "wcwidth" "ac_cv_have_decl_wcwidth" "
+    #include <wchar.h>
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_wcwidth" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_WCWIDTH $ac_have_decl" >>confdefs.h
+
+  if test $ac_cv_have_decl_wcwidth != yes; then
+    HAVE_DECL_WCWIDTH=0
+  fi
+
+  if test $ac_cv_func_wcwidth != yes; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether wcwidth is a macro" >&5
+printf %s "checking whether wcwidth is a macro... " >&6; }
+if test ${gl_cv_func_wcwidth_macro+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <wchar.h>
+#ifdef wcwidth
+ wchar_header_defines_wcwidth
+#endif
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "wchar_header_defines_wcwidth" >/dev/null 2>&1
+then :
+  gl_cv_func_wcwidth_macro=yes
+else $as_nop
+  gl_cv_func_wcwidth_macro=no
+fi
+rm -rf conftest*
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_wcwidth_macro" >&5
+printf "%s\n" "$gl_cv_func_wcwidth_macro" >&6; }
+  fi
+
+  if test $ac_cv_func_wcwidth = yes || test $gl_cv_func_wcwidth_macro = yes; then
+    HAVE_WCWIDTH=1
+                                        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether wcwidth works reasonably in UTF-8 locales" >&5
+printf %s "checking whether wcwidth works reasonably in UTF-8 locales... " >&6; }
+if test ${gl_cv_func_wcwidth_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+        if test "$cross_compiling" = yes
+then :
+
+           case "$host_os" in
+                            # Guess yes on glibc systems.
+             *-gnu* | gnu*) gl_cv_func_wcwidth_works="guessing yes";;
+                            # Guess yes on musl systems.
+             *-musl*)       gl_cv_func_wcwidth_works="guessing yes";;
+                            # Guess yes on AIX 7 systems.
+             aix[7-9]*)     gl_cv_func_wcwidth_works="guessing yes";;
+             *)             gl_cv_func_wcwidth_works="$gl_cross_guess_normal";;
+           esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <wchar.h>
+#if !HAVE_DECL_WCWIDTH
+extern
+# ifdef __cplusplus
+"C"
+# endif
+int wcwidth (int);
+#endif
+int main ()
+{
+  int result = 0;
+  if (setlocale (LC_ALL, "en_US.UTF-8") != NULL)
+    {
+      if (wcwidth (0x0301) > 0)
+        result |= 1;
+      if (wcwidth (0x05B0) > 0)
+        result |= 2;
+      if (wcwidth (0x200B) > 0)
+        result |= 4;
+      if (wcwidth (0xFF1A) == 0)
+        result |= 8;
+      if (wcwidth (0x2202) > 1)
+        result |= 16;
+    }
+  return result;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_wcwidth_works=yes
+else $as_nop
+  gl_cv_func_wcwidth_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_wcwidth_works" >&5
+printf "%s\n" "$gl_cv_func_wcwidth_works" >&6; }
+    case "$gl_cv_func_wcwidth_works" in
+      *yes) ;;
+      *no) REPLACE_WCWIDTH=1 ;;
+    esac
+  else
+    HAVE_WCWIDTH=0
+  fi
+
+  if test $HAVE_WCWIDTH = 0 || test $REPLACE_WCWIDTH = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS wcwidth.$ac_objext"
+
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_WCWIDTH=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_WCWIDTH 1" >>confdefs.h
+
+
+
+
+  case "$host_os" in
+    mingw*)
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS windows-mutex.$ac_objext"
+
+      ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS windows-once.$ac_objext"
+
+      ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS windows-recmutex.$ac_objext"
+
+      ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS windows-rwlock.$ac_objext"
+
+      ;;
+  esac
+
+
+
+
+
+
+
+  case "$host_os" in
+    mingw*)
+  GL_GNULIB_OVERRIDES_STRUCT_STAT=1
+
+ ;;
+  esac
+
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for wmemchr" >&5
+printf %s "checking for wmemchr... " >&6; }
+if test ${gl_cv_func_wmemchr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <wchar.h>
+
+int
+main (void)
+{
+return ! wmemchr ((const wchar_t *) 0, (wchar_t) ' ', 0);
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_func_wmemchr=yes
+else $as_nop
+  gl_cv_func_wmemchr=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_wmemchr" >&5
+printf "%s\n" "$gl_cv_func_wmemchr" >&6; }
+  if test $gl_cv_func_wmemchr = no; then
+    HAVE_WMEMCHR=0
+  fi
+
+  if test $HAVE_WMEMCHR = 0; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS wmemchr.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_WMEMCHR=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_WMEMCHR 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+  if test $ac_cv_func_wmempcpy = no; then
+    HAVE_WMEMPCPY=0
+  fi
+
+  if test $HAVE_WMEMPCPY = 0; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS wmempcpy.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+          GL_GNULIB_WMEMPCPY=1
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_WMEMPCPY 1" >>confdefs.h
+
+
+
+  :
+
+
+printf "%s\n" "#define GNULIB_XALLOC 1" >>confdefs.h
+
+
+
+
+printf "%s\n" "#define GNULIB_XALLOC_DIE 1" >>confdefs.h
+
+
+
+  :
+
+  # End of code from modules
+
+
+
+
+
+
+
+
+
+
+
+  gltests_libdeps=
+  gltests_ltlibdeps=
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  gl_source_base='gnulib-tests'
+  gltests_WITNESS=IN_`echo "${PACKAGE-$PACKAGE_TARNAME}" | LC_ALL=C tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | LC_ALL=C sed -e 's/[^A-Z0-9_]/_/g'`_GNULIB_TESTS
+
+  gl_module_indicator_condition=$gltests_WITNESS
+
+
+  if test "$ac_cv_header_winsock2_h" = yes; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS accept.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_ACCEPT" != 1; then
+        if test "$GL_GNULIB_ACCEPT" = 0; then
+      GL_GNULIB_ACCEPT=$gl_module_indicator_condition
+    else
+      GL_GNULIB_ACCEPT="($GL_GNULIB_ACCEPT || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_ACCEPT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+  if test "$ac_cv_header_winsock2_h" = yes; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS bind.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_BIND" != 1; then
+        if test "$GL_GNULIB_BIND" = 0; then
+      GL_GNULIB_BIND=$gl_module_indicator_condition
+    else
+      GL_GNULIB_BIND="($GL_GNULIB_BIND || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_BIND 1" >>confdefs.h
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional french locale" >&5
+printf %s "checking for a traditional french locale... " >&6; }
+if test ${gt_cv_locale_fr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is only
+     one byte long. This excludes the UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 3 || buf[2] != 'v') return 1;
+# if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+# endif
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the native Windows locale name.
+          if (LC_ALL=French_France.1252 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=French_France.1252
+          else
+            # None found.
+            gt_cv_locale_fr=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr=fr_FR.ISO-8859-1
+            else
+              # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name.
+              if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr=fr_FR.ISO8859-1
+              else
+                # Test for the HP-UX locale name.
+                if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_fr=fr_FR.iso88591
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_fr=fr
+                  else
+                    # None found.
+                    gt_cv_locale_fr=none
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr" >&5
+printf "%s\n" "$gt_cv_locale_fr" >&6; }
+  LOCALE_FR=$gt_cv_locale_fr
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a french Unicode locale" >&5
+printf %s "checking for a french Unicode locale... " >&6; }
+if test ${gt_cv_locale_fr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if !(defined __BEOS__ || defined __HAIKU__)
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
+    return 1;
+#endif
+#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+#endif
+  return 0;
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=French_France.65001
+          else
+            # None found.
+            gt_cv_locale_fr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr_utf8=fr_FR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=fr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_fr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_fr_utf8" >&6; }
+  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional french locale" >&5
+printf %s "checking for a traditional french locale... " >&6; }
+if test ${gt_cv_locale_fr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is only
+     one byte long. This excludes the UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 3 || buf[2] != 'v') return 1;
+# if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+# endif
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the native Windows locale name.
+          if (LC_ALL=French_France.1252 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=French_France.1252
+          else
+            # None found.
+            gt_cv_locale_fr=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr=fr_FR.ISO-8859-1
+            else
+              # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name.
+              if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr=fr_FR.ISO8859-1
+              else
+                # Test for the HP-UX locale name.
+                if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_fr=fr_FR.iso88591
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_fr=fr
+                  else
+                    # None found.
+                    gt_cv_locale_fr=none
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr" >&5
+printf "%s\n" "$gt_cv_locale_fr" >&6; }
+  LOCALE_FR=$gt_cv_locale_fr
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a turkish Unicode locale" >&5
+printf %s "checking for a turkish Unicode locale... " >&6; }
+if test ${gt_cv_locale_tr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <wctype.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  But BeOS does not
+     implement the Turkish upper-/lowercase mappings.  Therefore, let this
+     program return 1 on BeOS.  */
+  /* Check whether the given locale name is recognized by the system.  */
+#if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+#else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+#endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the tr_TR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+#if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+#endif
+#ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+#endif
+  /* Check whether in the abbreviation of the eighth month, the second
+     character (should be U+011F: LATIN SMALL LETTER G WITH BREVE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1992 - 1900; t.tm_mon = 8 - 1; t.tm_mday = 19;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc4 || buf[2] != (char) 0x9f)
+    return 1;
+  /* Check whether the upper-/lowercase mappings are as expected for
+     Turkish.  */
+  if (towupper ('i') != 0x0130 || towlower (0x0130) != 'i'
+      || towupper(0x0131) != 'I' || towlower ('I') != 0x0131)
+    return 1;
+  return 0;
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=Turkish_Turkey.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_tr_utf8=Turkish_Turkey.65001
+          else
+            # None found.
+            gt_cv_locale_tr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=tr_TR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_tr_utf8=tr_TR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=tr_TR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_tr_utf8=tr_TR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=tr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_tr_utf8=tr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_tr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    else
+      gt_cv_locale_tr_utf8=none
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_tr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_tr_utf8" >&6; }
+  LOCALE_TR_UTF8=$gt_cv_locale_tr_utf8
+
+
+
+  if test "$ac_cv_header_winsock2_h" = yes; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS connect.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_CONNECT" != 1; then
+        if test "$GL_GNULIB_CONNECT" = 0; then
+      GL_GNULIB_CONNECT=$gl_module_indicator_condition
+    else
+      GL_GNULIB_CONNECT="($GL_GNULIB_CONNECT || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_CONNECT 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_ENVIRON" != 1; then
+        if test "$GL_GNULIB_ENVIRON" = 0; then
+      GL_GNULIB_ENVIRON=$gl_module_indicator_condition
+    else
+      GL_GNULIB_ENVIRON="($GL_GNULIB_ENVIRON || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_ENVIRON 1" >>confdefs.h
+
+
+
+
+
+
+
+    if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+      REPLACE_FDOPEN=1
+    fi
+
+  if test $REPLACE_FDOPEN = 0; then
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether fdopen sets errno" >&5
+printf %s "checking whether fdopen sets errno... " >&6; }
+if test ${gl_cv_func_fdopen_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+        if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+             mingw*) gl_cv_func_fdopen_works="guessing no" ;;
+             *)      gl_cv_func_fdopen_works="guessing yes" ;;
+           esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#include <errno.h>
+
+
+$gl_mda_defines
+
+int
+main (void)
+{
+  FILE *fp;
+  errno = 0;
+  fp = fdopen (-1, "r");
+  if (fp == NULL && errno == 0)
+    return 1;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_fdopen_works=yes
+else $as_nop
+  gl_cv_func_fdopen_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_fdopen_works" >&5
+printf "%s\n" "$gl_cv_func_fdopen_works" >&6; }
+    case "$gl_cv_func_fdopen_works" in
+      *no) REPLACE_FDOPEN=1 ;;
+    esac
+  fi
+
+  if test $REPLACE_FDOPEN = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS fdopen.$ac_objext"
+
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_FDOPEN" != 1; then
+        if test "$GL_GNULIB_FDOPEN" = 0; then
+      GL_GNULIB_FDOPEN=$gl_module_indicator_condition
+    else
+      GL_GNULIB_FDOPEN="($GL_GNULIB_FDOPEN || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FDOPEN 1" >>confdefs.h
+
+
+
+
+
+
+  FLOAT_H=
+  REPLACE_FLOAT_LDBL=0
+  case "$host_os" in
+    aix* | beos* | openbsd* | mirbsd* | irix*)
+      FLOAT_H=float.h
+      ;;
+    freebsd* | dragonfly*)
+      case "$host_cpu" in
+        i[34567]86 )
+          FLOAT_H=float.h
+          ;;
+        x86_64 )
+          # On x86_64 systems, the C compiler may still be generating
+          # 32-bit code.
+          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __LP64__ || defined __x86_64__ || defined __amd64__
+                  int ok;
+                 #else
+                  error fail
+                 #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+else $as_nop
+  FLOAT_H=float.h
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+          ;;
+      esac
+      ;;
+    linux*)
+      case "$host_cpu" in
+        powerpc*)
+          FLOAT_H=float.h
+          ;;
+      esac
+      ;;
+  esac
+  case "$host_os" in
+    aix* | freebsd* | dragonfly* | linux*)
+      if test -n "$FLOAT_H"; then
+        REPLACE_FLOAT_LDBL=1
+      fi
+      ;;
+  esac
+
+    REPLACE_ITOLD=0
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether conversion from 'int' to 'long double' works" >&5
+printf %s "checking whether conversion from 'int' to 'long double' works... " >&6; }
+if test ${gl_cv_func_itold_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      if test "$cross_compiling" = yes
+then :
+  case "$host" in
+           sparc*-*-linux*)
+             cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if defined __LP64__ || defined __arch64__
+                    int ok;
+                   #else
+                    error fail
+                   #endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_itold_works="guessing no"
+else $as_nop
+  gl_cv_func_itold_works="guessing yes"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+             ;;
+                   # Guess yes on native Windows.
+           mingw*) gl_cv_func_itold_works="guessing yes" ;;
+           *)      gl_cv_func_itold_works="guessing yes" ;;
+         esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int i = -1;
+volatile long double ld;
+int main ()
+{
+  ld += i * 1.0L;
+  if (ld > 0)
+    return 1;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_itold_works=yes
+else $as_nop
+  gl_cv_func_itold_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_itold_works" >&5
+printf "%s\n" "$gl_cv_func_itold_works" >&6; }
+  case "$gl_cv_func_itold_works" in
+    *no)
+      REPLACE_ITOLD=1
+                  FLOAT_H=float.h
+      ;;
+  esac
+
+  if test -n "$FLOAT_H"; then
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_float_h='<'float.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <float.h>" >&5
+printf %s "checking absolute name of <float.h>... " >&6; }
+if test ${gl_cv_next_float_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <float.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'float.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_float_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_float_h
+           gl_cv_next_float_h='"'$gl_header'"'
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_float_h" >&5
+printf "%s\n" "$gl_cv_next_float_h" >&6; }
+     fi
+     NEXT_FLOAT_H=$gl_cv_next_float_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'float.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_float_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_FLOAT_H=$gl_next_as_first_directive
+
+
+
+
+  fi
+
+   if test -n "$FLOAT_H"; then
+  GL_GENERATE_FLOAT_H_TRUE=
+  GL_GENERATE_FLOAT_H_FALSE='#'
+else
+  GL_GENERATE_FLOAT_H_TRUE='#'
+  GL_GENERATE_FLOAT_H_FALSE=
+fi
+
+
+
+  if test $REPLACE_FLOAT_LDBL = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS float.$ac_objext"
+
+  fi
+  if test $REPLACE_ITOLD = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS itold.$ac_objext"
+
+  fi
+
+
+
+  if test $ac_cv_func_ftruncate = yes; then
+
+
+      case "$host_os" in
+        mingw*)
+                                                                      REPLACE_FTRUNCATE=1
+          ;;
+      esac
+
+  else
+    HAVE_FTRUNCATE=0
+  fi
+
+  if test $HAVE_FTRUNCATE = 0 || test $REPLACE_FTRUNCATE = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS ftruncate.$ac_objext"
+
+
+  ac_fn_c_check_func "$LINENO" "_chsize" "ac_cv_func__chsize"
+if test "x$ac_cv_func__chsize" = xyes
+then :
+  printf "%s\n" "#define HAVE__CHSIZE 1" >>confdefs.h
+
+fi
+
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_FTRUNCATE" != 1; then
+        if test "$GL_GNULIB_FTRUNCATE" = 0; then
+      GL_GNULIB_FTRUNCATE=$gl_module_indicator_condition
+    else
+      GL_GNULIB_FTRUNCATE="($GL_GNULIB_FTRUNCATE || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_FTRUNCATE 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+  gl_gettimeofday_timezone=void
+  if test $ac_cv_func_gettimeofday != yes; then
+    HAVE_GETTIMEOFDAY=0
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for gettimeofday with POSIX signature" >&5
+printf %s "checking for gettimeofday with POSIX signature... " >&6; }
+if test ${gl_cv_func_gettimeofday_posix_signature+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/time.h>
+              struct timeval c;
+              int gettimeofday (struct timeval *restrict, void *restrict);
+
+int
+main (void)
+{
+/* glibc uses struct timezone * rather than the POSIX void *
+                 if _GNU_SOURCE is defined.  However, since the only portable
+                 use of gettimeofday uses NULL as the second parameter, and
+                 since the glibc definition is actually more typesafe, it is
+                 not worth wrapping this to get a compliant signature.  */
+              int (*f) (struct timeval *restrict, void *restrict)
+                = gettimeofday;
+              int x = f (&c, 0);
+              return !(x | c.tv_sec | c.tv_usec);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_gettimeofday_posix_signature=yes
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/time.h>
+int gettimeofday (struct timeval *restrict, struct timezone *restrict);
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_gettimeofday_posix_signature=almost
+else $as_nop
+  gl_cv_func_gettimeofday_posix_signature=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_gettimeofday_posix_signature" >&5
+printf "%s\n" "$gl_cv_func_gettimeofday_posix_signature" >&6; }
+    if test $gl_cv_func_gettimeofday_posix_signature = almost; then
+      gl_gettimeofday_timezone='struct timezone'
+    elif test $gl_cv_func_gettimeofday_posix_signature != yes; then
+      REPLACE_GETTIMEOFDAY=1
+    fi
+        if test $REPLACE_STRUCT_TIMEVAL = 1; then
+      REPLACE_GETTIMEOFDAY=1
+    fi
+            case "$host_os" in
+      mingw*) REPLACE_GETTIMEOFDAY=1 ;;
+    esac
+  fi
+
+printf "%s\n" "#define GETTIMEOFDAY_TIMEZONE $gl_gettimeofday_timezone" >>confdefs.h
+
+
+  if test $HAVE_GETTIMEOFDAY = 0 || test $REPLACE_GETTIMEOFDAY = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS gettimeofday.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_GETTIMEOFDAY" != 1; then
+        if test "$GL_GNULIB_GETTIMEOFDAY" = 0; then
+      GL_GNULIB_GETTIMEOFDAY=$gl_module_indicator_condition
+    else
+      GL_GNULIB_GETTIMEOFDAY="($GL_GNULIB_GETTIMEOFDAY || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_GETTIMEOFDAY 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+                HAVE_INET_PTON=1
+  INET_PTON_LIB=
+
+
+
+
+  if test $ac_cv_header_sys_socket_h != yes; then
+                    ac_fn_c_check_header_compile "$LINENO" "winsock2.h" "ac_cv_header_winsock2_h" "$ac_includes_default"
+if test "x$ac_cv_header_winsock2_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_WINSOCK2_H 1" >>confdefs.h
+
+fi
+
+  fi
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    HAVE_WINSOCK2_H=1
+    UNISTD_H_HAVE_WINSOCK2_H=1
+    SYS_IOCTL_H_HAVE_WINSOCK2_H=1
+  else
+    HAVE_WINSOCK2_H=0
+  fi
+
+
+  if test $HAVE_WINSOCK2_H = 1; then
+                    REPLACE_INET_PTON=1
+    ac_fn_check_decl "$LINENO" "inet_pton" "ac_cv_have_decl_inet_pton" "#include <ws2tcpip.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_inet_pton" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_INET_PTON $ac_have_decl" >>confdefs.h
+
+    if test $ac_cv_have_decl_inet_pton = yes; then
+      INET_PTON_LIB="-lws2_32"
+    else
+      HAVE_DECL_INET_PTON=0
+    fi
+  else
+    gl_save_LIBS=$LIBS
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing inet_pton" >&5
+printf %s "checking for library containing inet_pton... " >&6; }
+if test ${ac_cv_search_inet_pton+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char inet_pton ();
+int
+main (void)
+{
+return inet_pton ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' nsl resolv network
+do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_search_inet_pton=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext
+  if test ${ac_cv_search_inet_pton+y}
+then :
+  break
+fi
+done
+if test ${ac_cv_search_inet_pton+y}
+then :
+
+else $as_nop
+  ac_cv_search_inet_pton=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_inet_pton" >&5
+printf "%s\n" "$ac_cv_search_inet_pton" >&6; }
+ac_res=$ac_cv_search_inet_pton
+if test "$ac_res" != no
+then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+else $as_nop
+  ac_fn_c_check_func "$LINENO" "inet_pton" "ac_cv_func_inet_pton"
+if test "x$ac_cv_func_inet_pton" = xyes
+then :
+  printf "%s\n" "#define HAVE_INET_PTON 1" >>confdefs.h
+
+fi
+
+       if test $ac_cv_func_inet_pton = no; then
+         HAVE_INET_PTON=0
+       fi
+
+fi
+
+    LIBS=$gl_save_LIBS
+
+    if test "$ac_cv_search_inet_pton" != "no" \
+       && test "$ac_cv_search_inet_pton" != "none required"; then
+      INET_PTON_LIB="$ac_cv_search_inet_pton"
+    fi
+
+
+    ac_fn_check_decl "$LINENO" "inet_pton" "ac_cv_have_decl_inet_pton" "#include <arpa/inet.h>
+        #if HAVE_NETDB_H
+        # include <netdb.h>
+        #endif
+
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_inet_pton" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_INET_PTON $ac_have_decl" >>confdefs.h
+
+    if test $ac_cv_have_decl_inet_pton = no; then
+      HAVE_DECL_INET_PTON=0
+    fi
+  fi
+
+
+  if test $HAVE_INET_PTON = 0 || test $REPLACE_INET_PTON = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS inet_pton.$ac_objext"
+
+
+
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_INET_PTON" != 1; then
+        if test "$GL_GNULIB_INET_PTON" = 0; then
+      GL_GNULIB_INET_PTON=$gl_module_indicator_condition
+    else
+      GL_GNULIB_INET_PTON="($GL_GNULIB_INET_PTON || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5
+printf %s "checking whether byte ordering is bigendian... " >&6; }
+if test ${ac_cv_c_bigendian+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_c_bigendian=unknown
+    # See if we're dealing with a universal compiler.
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifndef __APPLE_CC__
+	       not a universal capable compiler
+	     #endif
+	     typedef int dummy;
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+	# Check for potential -arch flags.  It is not universal unless
+	# there are at least two -arch flags with different values.
+	ac_arch=
+	ac_prev=
+	for ac_word in $CC $CFLAGS $CPPFLAGS $LDFLAGS; do
+	 if test -n "$ac_prev"; then
+	   case $ac_word in
+	     i?86 | x86_64 | ppc | ppc64)
+	       if test -z "$ac_arch" || test "$ac_arch" = "$ac_word"; then
+		 ac_arch=$ac_word
+	       else
+		 ac_cv_c_bigendian=universal
+		 break
+	       fi
+	       ;;
+	   esac
+	   ac_prev=
+	 elif test "x$ac_word" = "x-arch"; then
+	   ac_prev=arch
+	 fi
+       done
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+    if test $ac_cv_c_bigendian = unknown; then
+      # See if sys/param.h defines the BYTE_ORDER macro.
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+	     #include <sys/param.h>
+
+int
+main (void)
+{
+#if ! (defined BYTE_ORDER && defined BIG_ENDIAN \
+		     && defined LITTLE_ENDIAN && BYTE_ORDER && BIG_ENDIAN \
+		     && LITTLE_ENDIAN)
+	      bogus endian macros
+	     #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  # It does; now see whether it defined to BIG_ENDIAN or not.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+		#include <sys/param.h>
+
+int
+main (void)
+{
+#if BYTE_ORDER != BIG_ENDIAN
+		 not big endian
+		#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_c_bigendian=yes
+else $as_nop
+  ac_cv_c_bigendian=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+    fi
+    if test $ac_cv_c_bigendian = unknown; then
+      # See if <limits.h> defines _LITTLE_ENDIAN or _BIG_ENDIAN (e.g., Solaris).
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+
+int
+main (void)
+{
+#if ! (defined _LITTLE_ENDIAN || defined _BIG_ENDIAN)
+	      bogus endian macros
+	     #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  # It does; now see whether it defined to _BIG_ENDIAN or not.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+
+int
+main (void)
+{
+#ifndef _BIG_ENDIAN
+		 not big endian
+		#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_c_bigendian=yes
+else $as_nop
+  ac_cv_c_bigendian=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+    fi
+    if test $ac_cv_c_bigendian = unknown; then
+      # Compile a test program.
+      if test "$cross_compiling" = yes
+then :
+  # Try to guess by grepping values from an object file.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+unsigned short int ascii_mm[] =
+		  { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
+		unsigned short int ascii_ii[] =
+		  { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
+		int use_ascii (int i) {
+		  return ascii_mm[i] + ascii_ii[i];
+		}
+		unsigned short int ebcdic_ii[] =
+		  { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
+		unsigned short int ebcdic_mm[] =
+		  { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
+		int use_ebcdic (int i) {
+		  return ebcdic_mm[i] + ebcdic_ii[i];
+		}
+		extern int foo;
+
+int
+main (void)
+{
+return use_ascii (foo) == use_ebcdic (foo);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  if grep BIGenDianSyS conftest.$ac_objext >/dev/null; then
+	      ac_cv_c_bigendian=yes
+	    fi
+	    if grep LiTTleEnDian conftest.$ac_objext >/dev/null ; then
+	      if test "$ac_cv_c_bigendian" = unknown; then
+		ac_cv_c_bigendian=no
+	      else
+		# finding both strings is unlikely to happen, but who knows?
+		ac_cv_c_bigendian=unknown
+	      fi
+	    fi
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main (void)
+{
+
+	     /* Are we little or big endian?  From Harbison&Steele.  */
+	     union
+	     {
+	       long int l;
+	       char c[sizeof (long int)];
+	     } u;
+	     u.l = 1;
+	     return u.c[sizeof (long int) - 1] == 1;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  ac_cv_c_bigendian=no
+else $as_nop
+  ac_cv_c_bigendian=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+    fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_bigendian" >&5
+printf "%s\n" "$ac_cv_c_bigendian" >&6; }
+ case $ac_cv_c_bigendian in #(
+   yes)
+     printf "%s\n" "#define WORDS_BIGENDIAN 1" >>confdefs.h
+;; #(
+   no)
+      ;; #(
+   universal)
+
+printf "%s\n" "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h
+
+     ;; #(
+   *)
+     as_fn_error $? "unknown endianness
+ presetting ac_cv_c_bigendian=no (or yes) will help" "$LINENO" 5 ;;
+ esac
+
+
+
+
+  :
+
+  :
+  :
+  :
+  :
+
+
+
+
+  HAVE_IOCTL=1
+  if test "$ac_cv_header_winsock2_h" = yes; then
+                HAVE_IOCTL=0
+  else
+    ac_fn_c_check_func "$LINENO" "ioctl" "ac_cv_func_ioctl"
+if test "x$ac_cv_func_ioctl" = xyes
+then :
+  printf "%s\n" "#define HAVE_IOCTL 1" >>confdefs.h
+
+fi
+
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ioctl with POSIX signature" >&5
+printf %s "checking for ioctl with POSIX signature... " >&6; }
+if test ${gl_cv_func_ioctl_posix_signature+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/ioctl.h>
+              /* On some platforms, ioctl() is declared in <unistd.h>.  */
+              #include <unistd.h>
+
+int
+main (void)
+{
+extern
+              #ifdef __cplusplus
+              "C"
+              #endif
+              int ioctl (int, int, ...);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_func_ioctl_posix_signature=yes
+else $as_nop
+  gl_cv_func_ioctl_posix_signature=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_ioctl_posix_signature" >&5
+printf "%s\n" "$gl_cv_func_ioctl_posix_signature" >&6; }
+    if test $gl_cv_func_ioctl_posix_signature != yes; then
+      REPLACE_IOCTL=1
+    fi
+  fi
+
+  if test $HAVE_IOCTL = 0 || test $REPLACE_IOCTL = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS ioctl.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_IOCTL" != 1; then
+        if test "$GL_GNULIB_IOCTL" = 0; then
+      GL_GNULIB_IOCTL=$gl_module_indicator_condition
+    else
+      GL_GNULIB_IOCTL="($GL_GNULIB_IOCTL || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_IOCTL 1" >>confdefs.h
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional french locale" >&5
+printf %s "checking for a traditional french locale... " >&6; }
+if test ${gt_cv_locale_fr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is only
+     one byte long. This excludes the UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 3 || buf[2] != 'v') return 1;
+# if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+# endif
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the native Windows locale name.
+          if (LC_ALL=French_France.1252 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=French_France.1252
+          else
+            # None found.
+            gt_cv_locale_fr=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr=fr_FR.ISO-8859-1
+            else
+              # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name.
+              if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr=fr_FR.ISO8859-1
+              else
+                # Test for the HP-UX locale name.
+                if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_fr=fr_FR.iso88591
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_fr=fr
+                  else
+                    # None found.
+                    gt_cv_locale_fr=none
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr" >&5
+printf "%s\n" "$gt_cv_locale_fr" >&6; }
+  LOCALE_FR=$gt_cv_locale_fr
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a french Unicode locale" >&5
+printf %s "checking for a french Unicode locale... " >&6; }
+if test ${gt_cv_locale_fr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if !(defined __BEOS__ || defined __HAIKU__)
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
+    return 1;
+#endif
+#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+#endif
+  return 0;
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=French_France.65001
+          else
+            # None found.
+            gt_cv_locale_fr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr_utf8=fr_FR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=fr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_fr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_fr_utf8" >&6; }
+  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional japanese locale" >&5
+printf %s "checking for a traditional japanese locale... " >&6; }
+if test ${gt_cv_locale_ja+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
+     on Cygwin 1.5.x.  */
+  if (MB_CUR_MAX == 1)
+    return 1;
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Note that on native Windows, the Japanese locale is
+          # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
+          # cannot use it here.
+          gt_cv_locale_ja=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the AIX locale name.
+          if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_ja=ja_JP
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_ja=ja_JP.EUC-JP
+            else
+              # Test for the HP-UX, OSF/1, NetBSD locale name.
+              if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_ja=ja_JP.eucJP
+              else
+                # Test for the IRIX, FreeBSD locale name.
+                if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_ja=ja_JP.EUC
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_ja=ja
+                  else
+                    # Special test for NetBSD 1.6.
+                    if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
+                      gt_cv_locale_ja=ja_JP.eucJP
+                    else
+                      # None found.
+                      gt_cv_locale_ja=none
+                    fi
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_ja" >&5
+printf "%s\n" "$gt_cv_locale_ja" >&6; }
+  LOCALE_JA=$gt_cv_locale_ja
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a transitional chinese locale" >&5
+printf %s "checking for a transitional chinese locale... " >&6; }
+if test ${gt_cv_locale_zh_CN+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  /* Check whether a typical GB18030 multibyte sequence is recognized as a
+     single wide character.  This excludes the GB2312 and GBK encodings.  */
+  if (mblen ("\203\062\332\066", 5) != 4)
+    return 1;
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=Chinese_China.54936
+          else
+            # None found.
+            gt_cv_locale_zh_CN=none
+          fi
+          ;;
+        solaris2.8)
+          # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
+          # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
+          # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
+          gt_cv_locale_zh_CN=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the locale name without encoding suffix.
+          if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=zh_CN
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_zh_CN=zh_CN.GB18030
+            else
+              # None found.
+              gt_cv_locale_zh_CN=none
+            fi
+          fi
+          ;;
+      esac
+    else
+      # If there was a link error, due to mblen(), the system is so old that
+      # it certainly doesn't have a chinese locale.
+      gt_cv_locale_zh_CN=none
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_zh_CN" >&5
+printf "%s\n" "$gt_cv_locale_zh_CN" >&6; }
+  LOCALE_ZH_CN=$gt_cv_locale_zh_CN
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional french locale" >&5
+printf %s "checking for a traditional french locale... " >&6; }
+if test ${gt_cv_locale_fr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is only
+     one byte long. This excludes the UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 3 || buf[2] != 'v') return 1;
+# if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+# endif
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the native Windows locale name.
+          if (LC_ALL=French_France.1252 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=French_France.1252
+          else
+            # None found.
+            gt_cv_locale_fr=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr=fr_FR.ISO-8859-1
+            else
+              # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name.
+              if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr=fr_FR.ISO8859-1
+              else
+                # Test for the HP-UX locale name.
+                if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_fr=fr_FR.iso88591
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_fr=fr
+                  else
+                    # None found.
+                    gt_cv_locale_fr=none
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr" >&5
+printf "%s\n" "$gt_cv_locale_fr" >&6; }
+  LOCALE_FR=$gt_cv_locale_fr
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a french Unicode locale" >&5
+printf %s "checking for a french Unicode locale... " >&6; }
+if test ${gt_cv_locale_fr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if !(defined __BEOS__ || defined __HAIKU__)
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
+    return 1;
+#endif
+#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+#endif
+  return 0;
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=French_France.65001
+          else
+            # None found.
+            gt_cv_locale_fr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr_utf8=fr_FR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=fr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_fr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_fr_utf8" >&6; }
+  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional japanese locale" >&5
+printf %s "checking for a traditional japanese locale... " >&6; }
+if test ${gt_cv_locale_ja+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
+     on Cygwin 1.5.x.  */
+  if (MB_CUR_MAX == 1)
+    return 1;
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Note that on native Windows, the Japanese locale is
+          # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
+          # cannot use it here.
+          gt_cv_locale_ja=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the AIX locale name.
+          if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_ja=ja_JP
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_ja=ja_JP.EUC-JP
+            else
+              # Test for the HP-UX, OSF/1, NetBSD locale name.
+              if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_ja=ja_JP.eucJP
+              else
+                # Test for the IRIX, FreeBSD locale name.
+                if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_ja=ja_JP.EUC
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_ja=ja
+                  else
+                    # Special test for NetBSD 1.6.
+                    if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
+                      gt_cv_locale_ja=ja_JP.eucJP
+                    else
+                      # None found.
+                      gt_cv_locale_ja=none
+                    fi
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_ja" >&5
+printf "%s\n" "$gt_cv_locale_ja" >&6; }
+  LOCALE_JA=$gt_cv_locale_ja
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a transitional chinese locale" >&5
+printf %s "checking for a transitional chinese locale... " >&6; }
+if test ${gt_cv_locale_zh_CN+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  /* Check whether a typical GB18030 multibyte sequence is recognized as a
+     single wide character.  This excludes the GB2312 and GBK encodings.  */
+  if (mblen ("\203\062\332\066", 5) != 4)
+    return 1;
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=Chinese_China.54936
+          else
+            # None found.
+            gt_cv_locale_zh_CN=none
+          fi
+          ;;
+        solaris2.8)
+          # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
+          # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
+          # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
+          gt_cv_locale_zh_CN=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the locale name without encoding suffix.
+          if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=zh_CN
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_zh_CN=zh_CN.GB18030
+            else
+              # None found.
+              gt_cv_locale_zh_CN=none
+            fi
+          fi
+          ;;
+      esac
+    else
+      # If there was a link error, due to mblen(), the system is so old that
+      # it certainly doesn't have a chinese locale.
+      gt_cv_locale_zh_CN=none
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_zh_CN" >&5
+printf "%s\n" "$gt_cv_locale_zh_CN" >&6; }
+  LOCALE_ZH_CN=$gt_cv_locale_zh_CN
+
+
+
+  if test "$ac_cv_header_winsock2_h" = yes; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS listen.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_LISTEN" != 1; then
+        if test "$GL_GNULIB_LISTEN" = 0; then
+      GL_GNULIB_LISTEN=$gl_module_indicator_condition
+    else
+      GL_GNULIB_LISTEN="($GL_GNULIB_LISTEN || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_LISTEN 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+  if test $HAVE_LOCALE_T = 1; then
+
+    gl_func_newlocale="$ac_cv_func_newlocale"
+    gl_func_duplocale="$ac_cv_func_duplocale"
+    gl_func_freelocale="$ac_cv_func_freelocale"
+  else
+            gl_func_newlocale=no
+    gl_func_duplocale=no
+    gl_func_freelocale=no
+  fi
+  if test $gl_func_newlocale != yes; then
+    HAVE_NEWLOCALE=0
+  fi
+  if test $gl_func_duplocale != yes; then
+    HAVE_DUPLOCALE=0
+  fi
+  if test $gl_func_freelocale != yes; then
+    HAVE_FREELOCALE=0
+  fi
+  if test $gt_localename_enhances_locale_funcs = yes; then
+    REPLACE_NEWLOCALE=1
+    REPLACE_DUPLOCALE=1
+    REPLACE_FREELOCALE=1
+  fi
+
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_LOCALENAME" != 1; then
+        if test "$GL_GNULIB_LOCALENAME" = 0; then
+      GL_GNULIB_LOCALENAME=$gl_module_indicator_condition
+    else
+      GL_GNULIB_LOCALENAME="($GL_GNULIB_LOCALENAME || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_LOCALENAME 1" >>confdefs.h
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a turkish Unicode locale" >&5
+printf %s "checking for a turkish Unicode locale... " >&6; }
+if test ${gt_cv_locale_tr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <wctype.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  But BeOS does not
+     implement the Turkish upper-/lowercase mappings.  Therefore, let this
+     program return 1 on BeOS.  */
+  /* Check whether the given locale name is recognized by the system.  */
+#if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+#else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+#endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the tr_TR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+#if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+#endif
+#ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+#endif
+  /* Check whether in the abbreviation of the eighth month, the second
+     character (should be U+011F: LATIN SMALL LETTER G WITH BREVE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1992 - 1900; t.tm_mon = 8 - 1; t.tm_mday = 19;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc4 || buf[2] != (char) 0x9f)
+    return 1;
+  /* Check whether the upper-/lowercase mappings are as expected for
+     Turkish.  */
+  if (towupper ('i') != 0x0130 || towlower (0x0130) != 'i'
+      || towupper(0x0131) != 'I' || towlower ('I') != 0x0131)
+    return 1;
+  return 0;
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=Turkish_Turkey.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_tr_utf8=Turkish_Turkey.65001
+          else
+            # None found.
+            gt_cv_locale_tr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=tr_TR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_tr_utf8=tr_TR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=tr_TR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_tr_utf8=tr_TR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=tr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_tr_utf8=tr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_tr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    else
+      gt_cv_locale_tr_utf8=none
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_tr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_tr_utf8" >&6; }
+  LOCALE_TR_UTF8=$gt_cv_locale_tr_utf8
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a french Unicode locale" >&5
+printf %s "checking for a french Unicode locale... " >&6; }
+if test ${gt_cv_locale_fr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if !(defined __BEOS__ || defined __HAIKU__)
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
+    return 1;
+#endif
+#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+#endif
+  return 0;
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=French_France.65001
+          else
+            # None found.
+            gt_cv_locale_fr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr_utf8=fr_FR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=fr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_fr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_fr_utf8" >&6; }
+  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional french locale" >&5
+printf %s "checking for a traditional french locale... " >&6; }
+if test ${gt_cv_locale_fr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is only
+     one byte long. This excludes the UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 3 || buf[2] != 'v') return 1;
+# if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+# endif
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the native Windows locale name.
+          if (LC_ALL=French_France.1252 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=French_France.1252
+          else
+            # None found.
+            gt_cv_locale_fr=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr=fr_FR.ISO-8859-1
+            else
+              # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name.
+              if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr=fr_FR.ISO8859-1
+              else
+                # Test for the HP-UX locale name.
+                if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_fr=fr_FR.iso88591
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_fr=fr
+                  else
+                    # None found.
+                    gt_cv_locale_fr=none
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr" >&5
+printf "%s\n" "$gt_cv_locale_fr" >&6; }
+  LOCALE_FR=$gt_cv_locale_fr
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a french Unicode locale" >&5
+printf %s "checking for a french Unicode locale... " >&6; }
+if test ${gt_cv_locale_fr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if !(defined __BEOS__ || defined __HAIKU__)
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
+    return 1;
+#endif
+#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+#endif
+  return 0;
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=French_France.65001
+          else
+            # None found.
+            gt_cv_locale_fr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr_utf8=fr_FR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=fr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_fr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_fr_utf8" >&6; }
+  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional japanese locale" >&5
+printf %s "checking for a traditional japanese locale... " >&6; }
+if test ${gt_cv_locale_ja+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
+     on Cygwin 1.5.x.  */
+  if (MB_CUR_MAX == 1)
+    return 1;
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Note that on native Windows, the Japanese locale is
+          # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
+          # cannot use it here.
+          gt_cv_locale_ja=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the AIX locale name.
+          if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_ja=ja_JP
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_ja=ja_JP.EUC-JP
+            else
+              # Test for the HP-UX, OSF/1, NetBSD locale name.
+              if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_ja=ja_JP.eucJP
+              else
+                # Test for the IRIX, FreeBSD locale name.
+                if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_ja=ja_JP.EUC
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_ja=ja
+                  else
+                    # Special test for NetBSD 1.6.
+                    if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
+                      gt_cv_locale_ja=ja_JP.eucJP
+                    else
+                      # None found.
+                      gt_cv_locale_ja=none
+                    fi
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_ja" >&5
+printf "%s\n" "$gt_cv_locale_ja" >&6; }
+  LOCALE_JA=$gt_cv_locale_ja
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a transitional chinese locale" >&5
+printf %s "checking for a transitional chinese locale... " >&6; }
+if test ${gt_cv_locale_zh_CN+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  /* Check whether a typical GB18030 multibyte sequence is recognized as a
+     single wide character.  This excludes the GB2312 and GBK encodings.  */
+  if (mblen ("\203\062\332\066", 5) != 4)
+    return 1;
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=Chinese_China.54936
+          else
+            # None found.
+            gt_cv_locale_zh_CN=none
+          fi
+          ;;
+        solaris2.8)
+          # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
+          # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
+          # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
+          gt_cv_locale_zh_CN=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the locale name without encoding suffix.
+          if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=zh_CN
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_zh_CN=zh_CN.GB18030
+            else
+              # None found.
+              gt_cv_locale_zh_CN=none
+            fi
+          fi
+          ;;
+      esac
+    else
+      # If there was a link error, due to mblen(), the system is so old that
+      # it certainly doesn't have a chinese locale.
+      gt_cv_locale_zh_CN=none
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_zh_CN" >&5
+printf "%s\n" "$gt_cv_locale_zh_CN" >&6; }
+  LOCALE_ZH_CN=$gt_cv_locale_zh_CN
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a french Unicode locale" >&5
+printf %s "checking for a french Unicode locale... " >&6; }
+if test ${gt_cv_locale_fr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if !(defined __BEOS__ || defined __HAIKU__)
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
+    return 1;
+#endif
+#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+#endif
+  return 0;
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=French_France.65001
+          else
+            # None found.
+            gt_cv_locale_fr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr_utf8=fr_FR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=fr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_fr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_fr_utf8" >&6; }
+  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a transitional chinese locale" >&5
+printf %s "checking for a transitional chinese locale... " >&6; }
+if test ${gt_cv_locale_zh_CN+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  /* Check whether a typical GB18030 multibyte sequence is recognized as a
+     single wide character.  This excludes the GB2312 and GBK encodings.  */
+  if (mblen ("\203\062\332\066", 5) != 4)
+    return 1;
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=Chinese_China.54936
+          else
+            # None found.
+            gt_cv_locale_zh_CN=none
+          fi
+          ;;
+        solaris2.8)
+          # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
+          # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
+          # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
+          gt_cv_locale_zh_CN=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the locale name without encoding suffix.
+          if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=zh_CN
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_zh_CN=zh_CN.GB18030
+            else
+              # None found.
+              gt_cv_locale_zh_CN=none
+            fi
+          fi
+          ;;
+      esac
+    else
+      # If there was a link error, due to mblen(), the system is so old that
+      # it certainly doesn't have a chinese locale.
+      gt_cv_locale_zh_CN=none
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_zh_CN" >&5
+printf "%s\n" "$gt_cv_locale_zh_CN" >&6; }
+  LOCALE_ZH_CN=$gt_cv_locale_zh_CN
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ nanosleep_save_libs=$LIBS
+
+ # Solaris 2.5.1 needs -lposix4 to get the nanosleep function.
+ # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
+ LIB_NANOSLEEP=
+
+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing nanosleep" >&5
+printf %s "checking for library containing nanosleep... " >&6; }
+if test ${ac_cv_search_nanosleep+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char nanosleep ();
+int
+main (void)
+{
+return nanosleep ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' rt posix4
+do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_search_nanosleep=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext
+  if test ${ac_cv_search_nanosleep+y}
+then :
+  break
+fi
+done
+if test ${ac_cv_search_nanosleep+y}
+then :
+
+else $as_nop
+  ac_cv_search_nanosleep=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_nanosleep" >&5
+printf "%s\n" "$ac_cv_search_nanosleep" >&6; }
+ac_res=$ac_cv_search_nanosleep
+if test "$ac_res" != no
+then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+  test "$ac_cv_search_nanosleep" = "none required" ||
+                 LIB_NANOSLEEP=$ac_cv_search_nanosleep
+fi
+
+ if test "x$ac_cv_search_nanosleep" != xno; then
+
+
+   if test $APPLE_UNIVERSAL_BUILD = 1; then
+     # A universal build on Apple Mac OS X platforms.
+     # The test result would be 'no (mishandles large arguments)' in 64-bit
+     # mode but 'yes' in 32-bit mode. But we need a configuration result that
+     # is valid in both modes.
+     gl_cv_func_nanosleep='no (mishandles large arguments)'
+   fi
+
+   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working nanosleep" >&5
+printf %s "checking for working nanosleep... " >&6; }
+if test ${gl_cv_func_nanosleep+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+     if test "$cross_compiling" = yes
+then :
+  case "$host_os" in           linux*) # Guess it halfway works when the kernel is Linux.
+            gl_cv_func_nanosleep='guessing no (mishandles large arguments)' ;;
+          mingw*) # Guess no on native Windows.
+            gl_cv_func_nanosleep='guessing no' ;;
+          *)      # If we don't know, obey --enable-cross-guesses.
+            gl_cv_func_nanosleep="$gl_cross_guess_normal" ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+          #include <errno.h>
+          #include <limits.h>
+          #include <signal.h>
+          #if HAVE_SYS_TIME_H
+           #include <sys/time.h>
+          #endif
+          #include <time.h>
+          #include <unistd.h>
+          #define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+          #define TYPE_MAXIMUM(t) \
+            ((t) (! TYPE_SIGNED (t) \
+                  ? (t) -1 \
+                  : ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1)))
+
+          #if HAVE_DECL_ALARM
+          static void
+          check_for_SIGALRM (int sig)
+          {
+            if (sig != SIGALRM)
+              _exit (1);
+          }
+          #endif
+
+          int
+          main ()
+          {
+            static struct timespec ts_sleep;
+            static struct timespec ts_remaining;
+            /* Test for major problems first.  */
+            if (! nanosleep)
+              return 2;
+            ts_sleep.tv_sec = 0;
+            ts_sleep.tv_nsec = 1;
+            #if HAVE_DECL_ALARM
+            {
+              static struct sigaction act;
+              act.sa_handler = check_for_SIGALRM;
+              sigemptyset (&act.sa_mask);
+              sigaction (SIGALRM, &act, NULL);
+              alarm (1);
+              if (nanosleep (&ts_sleep, NULL) != 0)
+                return 3;
+              /* Test for a minor problem: the handling of large arguments.  */
+              ts_sleep.tv_sec = TYPE_MAXIMUM (time_t);
+              ts_sleep.tv_nsec = 999999999;
+              alarm (1);
+              if (nanosleep (&ts_sleep, &ts_remaining) != -1)
+                return 4;
+              if (errno != EINTR)
+                return 5;
+              if (ts_remaining.tv_sec <= TYPE_MAXIMUM (time_t) - 10)
+                return 6;
+            }
+            #else /* A simpler test for native Windows.  */
+            if (nanosleep (&ts_sleep, &ts_remaining) < 0)
+              return 3;
+            #endif
+            return 0;
+          }
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_nanosleep=yes
+else $as_nop
+  case $? in         4|5|6) gl_cv_func_nanosleep='no (mishandles large arguments)';;         *)   gl_cv_func_nanosleep=no;;
+        esac
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_nanosleep" >&5
+printf "%s\n" "$gl_cv_func_nanosleep" >&6; }
+   case "$gl_cv_func_nanosleep" in
+     *yes)
+       REPLACE_NANOSLEEP=0
+       ;;
+     *)
+       REPLACE_NANOSLEEP=1
+       case "$gl_cv_func_nanosleep" in
+         *"mishandles large arguments"*)
+
+printf "%s\n" "#define HAVE_BUG_BIG_NANOSLEEP 1" >>confdefs.h
+
+           ;;
+         *)
+           # The replacement uses select(). Add $LIBSOCKET to $LIB_NANOSLEEP.
+           for ac_lib in $LIBSOCKET; do
+             case " $LIB_NANOSLEEP " in
+               *" $ac_lib "*) ;;
+               *) LIB_NANOSLEEP="$LIB_NANOSLEEP $ac_lib";;
+             esac
+           done
+           ;;
+       esac
+       ;;
+   esac
+ else
+   HAVE_NANOSLEEP=0
+ fi
+ LIBS=$nanosleep_save_libs
+
+  if test $HAVE_NANOSLEEP = 0 || test $REPLACE_NANOSLEEP = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS nanosleep.$ac_objext"
+
+
+
+  :
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_NANOSLEEP" != 1; then
+        if test "$GL_GNULIB_NANOSLEEP" = 0; then
+      GL_GNULIB_NANOSLEEP=$gl_module_indicator_condition
+    else
+      GL_GNULIB_NANOSLEEP="($GL_GNULIB_NANOSLEEP || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_NANOSLEEP 1" >>confdefs.h
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether <netinet/in.h> is self-contained" >&5
+printf %s "checking whether <netinet/in.h> is self-contained... " >&6; }
+if test ${gl_cv_header_netinet_in_h_selfcontained+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <netinet/in.h>
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_header_netinet_in_h_selfcontained=yes
+else $as_nop
+  gl_cv_header_netinet_in_h_selfcontained=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_netinet_in_h_selfcontained" >&5
+printf "%s\n" "$gl_cv_header_netinet_in_h_selfcontained" >&6; }
+  if test $gl_cv_header_netinet_in_h_selfcontained = yes; then
+    NETINET_IN_H=''
+  else
+    NETINET_IN_H='netinet/in.h'
+    ac_fn_c_check_header_compile "$LINENO" "netinet/in.h" "ac_cv_header_netinet_in_h" "$ac_includes_default"
+if test "x$ac_cv_header_netinet_in_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NETINET_IN_H 1" >>confdefs.h
+
+fi
+
+
+
+
+
+
+
+
+
+
+     if test $gl_cv_have_include_next = yes; then
+       gl_cv_next_netinet_in_h='<'netinet/in.h'>'
+     else
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking absolute name of <netinet/in.h>" >&5
+printf %s "checking absolute name of <netinet/in.h>... " >&6; }
+if test ${gl_cv_next_netinet_in_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+             if test $ac_cv_header_netinet_in_h = yes; then
+
+
+
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <netinet/in.h>
+_ACEOF
+                case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+                                          gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+      gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo 'netinet/in.h' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+
+        gl_cv_absolute_netinet_in_h=`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&5 |
+  sed -n "$gl_absolute_header_sed"`
+
+           gl_header=$gl_cv_absolute_netinet_in_h
+           gl_cv_next_netinet_in_h='"'$gl_header'"'
+          else
+               gl_cv_next_netinet_in_h='<'netinet/in.h'>'
+             fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_next_netinet_in_h" >&5
+printf "%s\n" "$gl_cv_next_netinet_in_h" >&6; }
+     fi
+     NEXT_NETINET_IN_H=$gl_cv_next_netinet_in_h
+
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'netinet/in.h'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=$gl_cv_next_netinet_in_h
+     fi
+     NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H=$gl_next_as_first_directive
+
+
+
+
+    if test $ac_cv_header_netinet_in_h = yes; then
+      HAVE_NETINET_IN_H=1
+    else
+      HAVE_NETINET_IN_H=0
+    fi
+
+  fi
+
+   if test -n "$NETINET_IN_H"; then
+  GL_GENERATE_NETINET_IN_H_TRUE=
+  GL_GENERATE_NETINET_IN_H_FALSE='#'
+else
+  GL_GENERATE_NETINET_IN_H_TRUE='#'
+  GL_GENERATE_NETINET_IN_H_FALSE=
+fi
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional french locale" >&5
+printf %s "checking for a traditional french locale... " >&6; }
+if test ${gt_cv_locale_fr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is only
+     one byte long. This excludes the UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 3 || buf[2] != 'v') return 1;
+# if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+# endif
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the native Windows locale name.
+          if (LC_ALL=French_France.1252 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=French_France.1252
+          else
+            # None found.
+            gt_cv_locale_fr=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr=fr_FR.ISO-8859-1
+            else
+              # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name.
+              if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr=fr_FR.ISO8859-1
+              else
+                # Test for the HP-UX locale name.
+                if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_fr=fr_FR.iso88591
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_fr=fr
+                  else
+                    # None found.
+                    gt_cv_locale_fr=none
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr" >&5
+printf "%s\n" "$gt_cv_locale_fr" >&6; }
+  LOCALE_FR=$gt_cv_locale_fr
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a french Unicode locale" >&5
+printf %s "checking for a french Unicode locale... " >&6; }
+if test ${gt_cv_locale_fr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if !(defined __BEOS__ || defined __HAIKU__)
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
+    return 1;
+#endif
+#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+#endif
+  return 0;
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=French_France.65001
+          else
+            # None found.
+            gt_cv_locale_fr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr_utf8=fr_FR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=fr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_fr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_fr_utf8" >&6; }
+  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
+
+
+
+
+
+
+
+             if test "$ERRNO_H:$REPLACE_STRERROR_0" != :0; then
+            REPLACE_PERROR=1
+  fi
+  case ${gl_cv_func_strerror_r_works-unset} in
+    unset|*yes)
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether perror matches strerror" >&5
+printf %s "checking whether perror matches strerror... " >&6; }
+if test ${gl_cv_func_perror_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                       # Guess yes on musl systems.
+              *-musl*) gl_cv_func_perror_works="guessing yes" ;;
+                       # Guess yes on native Windows.
+              mingw*)  gl_cv_func_perror_works="guessing yes" ;;
+                       # Otherwise obey --enable-cross-guesses.
+              *)       gl_cv_func_perror_works="$gl_cross_guess_normal" ;;
+            esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <errno.h>
+                #include <stdio.h>
+                #include <stdlib.h>
+                #include <string.h>
+
+int
+main (void)
+{
+char *str = strerror (-1);
+                if (!getenv("CONFTEST_OUTPUT")) return 0;
+                if (!str) str = "";
+                puts (str);
+                errno = -1;
+                perror ("");
+                return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  if CONFTEST_OUTPUT=1 ./conftest$EXEEXT >conftest.txt1 2>conftest.txt2 \
+               && cmp conftest.txt1 conftest.txt2 >/dev/null; then
+              gl_cv_func_perror_works=yes
+            else
+              gl_cv_func_perror_works=no
+            fi
+            rm -rf conftest.txt1 conftest.txt2
+else $as_nop
+  gl_cv_func_perror_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_perror_works" >&5
+printf "%s\n" "$gl_cv_func_perror_works" >&6; }
+      case "$gl_cv_func_perror_works" in
+        *yes) ;;
+        *) REPLACE_PERROR=1 ;;
+      esac
+      ;;
+    *)
+                  REPLACE_PERROR=1
+      ;;
+  esac
+
+  if test $REPLACE_PERROR = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS perror.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_PERROR" != 1; then
+        if test "$GL_GNULIB_PERROR" = 0; then
+      GL_GNULIB_PERROR=$gl_module_indicator_condition
+    else
+      GL_GNULIB_PERROR="($GL_GNULIB_PERROR || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_PERROR 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+  if { case "$host_os" in mingw*) true;; *) false;; esac; } \
+     && test $gl_threads_api = windows; then
+            REPLACE_PTHREAD_CREATE=1
+    REPLACE_PTHREAD_ATTR_INIT=1
+    REPLACE_PTHREAD_ATTR_GETDETACHSTATE=1
+    REPLACE_PTHREAD_ATTR_SETDETACHSTATE=1
+    REPLACE_PTHREAD_ATTR_DESTROY=1
+    REPLACE_PTHREAD_SELF=1
+    REPLACE_PTHREAD_EQUAL=1
+    REPLACE_PTHREAD_DETACH=1
+    REPLACE_PTHREAD_JOIN=1
+    REPLACE_PTHREAD_EXIT=1
+  else
+    if test $HAVE_PTHREAD_H = 0; then
+      HAVE_PTHREAD_CREATE=0
+      HAVE_PTHREAD_ATTR_INIT=0
+      HAVE_PTHREAD_ATTR_GETDETACHSTATE=0
+      HAVE_PTHREAD_ATTR_SETDETACHSTATE=0
+      HAVE_PTHREAD_ATTR_DESTROY=0
+      HAVE_PTHREAD_SELF=0
+      HAVE_PTHREAD_EQUAL=0
+      HAVE_PTHREAD_DETACH=0
+      HAVE_PTHREAD_JOIN=0
+      HAVE_PTHREAD_EXIT=0
+    else
+                  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthread_create exists as a global function" >&5
+printf %s "checking whether pthread_create exists as a global function... " >&6; }
+if test ${gl_cv_func_pthread_create+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  saved_LIBS="$LIBS"
+         LIBS="$LIBS $LIBPMULTITHREAD"
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+extern
+                #ifdef __cplusplus
+                "C"
+                #endif
+                int pthread_create (void);
+                int main ()
+                {
+                  return pthread_create ();
+                }
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_func_pthread_create=yes
+else $as_nop
+  gl_cv_func_pthread_create=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+         LIBS="$saved_LIBS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_pthread_create" >&5
+printf "%s\n" "$gl_cv_func_pthread_create" >&6; }
+      if test $gl_cv_func_pthread_create = no; then
+        REPLACE_PTHREAD_CREATE=1
+        REPLACE_PTHREAD_ATTR_INIT=1
+
+printf "%s\n" "#define PTHREAD_CREATE_IS_INLINE 1" >>confdefs.h
+
+      fi
+    fi
+  fi
+
+  if test $HAVE_PTHREAD_CREATE = 0 || test $REPLACE_PTHREAD_CREATE = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS pthread-thread.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_PTHREAD_THREAD" != 1; then
+        if test "$GL_GNULIB_PTHREAD_THREAD" = 0; then
+      GL_GNULIB_PTHREAD_THREAD=$gl_module_indicator_condition
+    else
+      GL_GNULIB_PTHREAD_THREAD="($GL_GNULIB_PTHREAD_THREAD || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_PTHREAD_THREAD 1" >>confdefs.h
+
+
+
+
+
+
+
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthread_sigmask is a macro" >&5
+printf %s "checking whether pthread_sigmask is a macro... " >&6; }
+if test ${gl_cv_func_pthread_sigmask_macro+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <pthread.h>
+#include <signal.h>
+#ifdef pthread_sigmask
+ headers_define_pthread_sigmask
+#endif
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "headers_define_pthread_sigmask" >/dev/null 2>&1
+then :
+  gl_cv_func_pthread_sigmask_macro=yes
+else $as_nop
+  gl_cv_func_pthread_sigmask_macro=no
+fi
+rm -rf conftest*
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_pthread_sigmask_macro" >&5
+printf "%s\n" "$gl_cv_func_pthread_sigmask_macro" >&6; }
+
+  LIB_PTHREAD_SIGMASK=
+
+  if test $gl_cv_func_pthread_sigmask_macro = yes; then
+        HAVE_PTHREAD_SIGMASK=0
+        REPLACE_PTHREAD_SIGMASK=1
+  else
+
+
+
+      if test "$gl_threads_api" = posix; then
+        if test $ac_cv_func_pthread_sigmask = yes; then
+                    :
+        else
+          if test -n "$LIBMULTITHREAD"; then
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_sigmask in $LIBMULTITHREAD" >&5
+printf %s "checking for pthread_sigmask in $LIBMULTITHREAD... " >&6; }
+if test ${gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_save_LIBS="$LIBS"
+               LIBS="$LIBS $LIBMULTITHREAD"
+               cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+                      #include <signal.h>
+
+int
+main (void)
+{
+return pthread_sigmask (0, (sigset_t *) 0, (sigset_t *) 0);
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD=yes
+else $as_nop
+  gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+               LIBS="$gl_save_LIBS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD" >&5
+printf "%s\n" "$gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD" >&6; }
+            if test $gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD = yes; then
+                            LIB_PTHREAD_SIGMASK="$LIBMULTITHREAD"
+            else
+                            HAVE_PTHREAD_SIGMASK=0
+            fi
+          else
+                        HAVE_PTHREAD_SIGMASK=0
+          fi
+        fi
+      else
+                        if test $ac_cv_func_pthread_sigmask = yes; then
+          REPLACE_PTHREAD_SIGMASK=1
+        else
+          HAVE_PTHREAD_SIGMASK=0
+        fi
+      fi
+
+  fi
+
+
+
+    if test $HAVE_PTHREAD_SIGMASK = 1; then
+
+
+                if test -z "$LIB_PTHREAD_SIGMASK"; then
+      case " $LIBS " in
+        *' -pthread '*) ;;
+        *' -lpthread '*) ;;
+        *)
+          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthread_sigmask works without -lpthread" >&5
+printf %s "checking whether pthread_sigmask works without -lpthread... " >&6; }
+if test ${gl_cv_func_pthread_sigmask_in_libc_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+              if test "$cross_compiling" = yes
+then :
+
+                                  case "$host_os" in
+                   freebsd* | midnightbsd* | hpux* | solaris | solaris2.[2-9]*)
+                     gl_cv_func_pthread_sigmask_in_libc_works="guessing no";;
+                   *)
+                     gl_cv_func_pthread_sigmask_in_libc_works="guessing yes";;
+                 esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+                   #include <pthread.h>
+                   #include <signal.h>
+                   #include <stddef.h>
+                   int main ()
+                   {
+                     sigset_t set;
+                     sigemptyset (&set);
+                     return pthread_sigmask (1729, &set, NULL) != 0;
+                   }
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_pthread_sigmask_in_libc_works=no
+else $as_nop
+  gl_cv_func_pthread_sigmask_in_libc_works=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_pthread_sigmask_in_libc_works" >&5
+printf "%s\n" "$gl_cv_func_pthread_sigmask_in_libc_works" >&6; }
+          case "$gl_cv_func_pthread_sigmask_in_libc_works" in
+            *no)
+              REPLACE_PTHREAD_SIGMASK=1
+
+printf "%s\n" "#define PTHREAD_SIGMASK_INEFFECTIVE 1" >>confdefs.h
+
+              ;;
+          esac;;
+      esac
+    fi
+
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthread_sigmask returns error numbers" >&5
+printf %s "checking whether pthread_sigmask returns error numbers... " >&6; }
+if test ${gl_cv_func_pthread_sigmask_return_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+        gl_save_LIBS="$LIBS"
+        LIBS="$LIBS $LIB_PTHREAD_SIGMASK"
+        if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+             cygwin*)
+               gl_cv_func_pthread_sigmask_return_works="guessing no";;
+             *)
+               gl_cv_func_pthread_sigmask_return_works="guessing yes";;
+           esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <pthread.h>
+#include <signal.h>
+#include <stddef.h>
+int main ()
+{
+  sigset_t set;
+  sigemptyset (&set);
+  if (pthread_sigmask (1729, &set, NULL) == -1)
+    return 1;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_pthread_sigmask_return_works=yes
+else $as_nop
+  gl_cv_func_pthread_sigmask_return_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        LIBS="$gl_save_LIBS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_pthread_sigmask_return_works" >&5
+printf "%s\n" "$gl_cv_func_pthread_sigmask_return_works" >&6; }
+    case "$gl_cv_func_pthread_sigmask_return_works" in
+      *no)
+        REPLACE_PTHREAD_SIGMASK=1
+
+printf "%s\n" "#define PTHREAD_SIGMASK_FAILS_WITH_ERRNO 1" >>confdefs.h
+
+        ;;
+    esac
+
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthread_sigmask unblocks signals correctly" >&5
+printf %s "checking whether pthread_sigmask unblocks signals correctly... " >&6; }
+if test ${gl_cv_func_pthread_sigmask_unblock_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+        case "$host_os" in
+          irix*)
+            gl_cv_func_pthread_sigmask_unblock_works="guessing no";;
+          *)
+            gl_cv_func_pthread_sigmask_unblock_works="guessing yes";;
+        esac
+                                         gl_save_LIBS=$LIBS
+           LIBS="$LIBS $LIBMULTITHREAD"
+        if test "$cross_compiling" = yes
+then :
+  :
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <pthread.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+$gl_mda_defines
+
+static volatile int sigint_occurred;
+static void
+sigint_handler (int sig)
+{
+  sigint_occurred++;
+}
+int main ()
+{
+  sigset_t set;
+  int pid = getpid ();
+  char command[80];
+  signal (SIGINT, sigint_handler);
+  sigemptyset (&set);
+  sigaddset (&set, SIGINT);
+  if (!(pthread_sigmask (SIG_BLOCK, &set, NULL) == 0))
+    return 1;
+  sprintf (command, "sh -c 'sleep 1; kill -%d %d' &", SIGINT, pid);
+  if (!(system (command) == 0))
+    return 2;
+  sleep (2);
+  if (!(sigint_occurred == 0))
+    return 3;
+  if (!(pthread_sigmask (SIG_UNBLOCK, &set, NULL) == 0))
+    return 4;
+  if (!(sigint_occurred == 1)) /* This fails on IRIX.  */
+    return 5;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  :
+else $as_nop
+  gl_cv_func_pthread_sigmask_unblock_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        LIBS=$gl_save_LIBS
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_pthread_sigmask_unblock_works" >&5
+printf "%s\n" "$gl_cv_func_pthread_sigmask_unblock_works" >&6; }
+    case "$gl_cv_func_pthread_sigmask_unblock_works" in
+      *no)
+        REPLACE_PTHREAD_SIGMASK=1
+
+printf "%s\n" "#define PTHREAD_SIGMASK_UNBLOCK_BUG 1" >>confdefs.h
+
+        ;;
+    esac
+  fi
+
+  if test $HAVE_PTHREAD_SIGMASK = 0 || test $REPLACE_PTHREAD_SIGMASK = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS pthread_sigmask.$ac_objext"
+
+
+  if test $HAVE_PTHREAD_SIGMASK = 1; then
+
+printf "%s\n" "#define HAVE_PTHREAD_SIGMASK 1" >>confdefs.h
+
+  fi
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_PTHREAD_SIGMASK" != 1; then
+        if test "$GL_GNULIB_PTHREAD_SIGMASK" = 0; then
+      GL_GNULIB_PTHREAD_SIGMASK=$gl_module_indicator_condition
+    else
+      GL_GNULIB_PTHREAD_SIGMASK="($GL_GNULIB_PTHREAD_SIGMASK || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_PTHREAD_SIGMASK 1" >>confdefs.h
+
+
+
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for putenv compatible with GNU and SVID" >&5
+printf %s "checking for putenv compatible with GNU and SVID... " >&6; }
+if test ${gl_cv_func_svid_putenv+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+          case "$host_os" in
+                         # Guess yes on glibc systems.
+          *-gnu* | gnu*) gl_cv_func_svid_putenv="guessing yes" ;;
+                         # Guess yes on musl systems.
+          *-musl*)       gl_cv_func_svid_putenv="guessing yes" ;;
+                         # Guess no on native Windows.
+          mingw*)        gl_cv_func_svid_putenv="guessing no" ;;
+                         # If we don't know, obey --enable-cross-guesses.
+          *)             gl_cv_func_svid_putenv="$gl_cross_guess_normal" ;;
+        esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+
+
+$gl_mda_defines
+
+int
+main (void)
+{
+
+            /* Put it in env.  */
+            if (putenv ("CONFTEST_putenv=val"))
+              return 1;
+
+            /* Try to remove it.  */
+            if (putenv ("CONFTEST_putenv"))
+              return 2;
+
+            /* Make sure it was deleted.  */
+            if (getenv ("CONFTEST_putenv") != 0)
+              return 3;
+
+            return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_svid_putenv=yes
+else $as_nop
+  gl_cv_func_svid_putenv=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_svid_putenv" >&5
+printf "%s\n" "$gl_cv_func_svid_putenv" >&6; }
+  case "$gl_cv_func_svid_putenv" in
+    *yes) ;;
+    *)
+      REPLACE_PUTENV=1
+      ;;
+  esac
+
+  if test $REPLACE_PUTENV = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS putenv.$ac_objext"
+
+
+  ac_fn_check_decl "$LINENO" "_putenv" "ac_cv_have_decl__putenv" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl__putenv" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL__PUTENV $ac_have_decl" >>confdefs.h
+
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_PUTENV" != 1; then
+        if test "$GL_GNULIB_PUTENV" = 0; then
+      GL_GNULIB_PUTENV=$gl_module_indicator_condition
+    else
+      GL_GNULIB_PUTENV="($GL_GNULIB_PUTENV || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_PUTENV 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    REPLACE_SELECT=1
+  else
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether select supports a 0 argument" >&5
+printf %s "checking whether select supports a 0 argument... " >&6; }
+if test ${gl_cv_func_select_supports0+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+        if test "$cross_compiling" = yes
+then :
+
+           case "$host_os" in
+                       # Guess no on Interix.
+             interix*) gl_cv_func_select_supports0="guessing no";;
+                       # Guess yes otherwise.
+             *)        gl_cv_func_select_supports0="guessing yes";;
+           esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#if HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+int main ()
+{
+  struct timeval timeout;
+  timeout.tv_sec = 0;
+  timeout.tv_usec = 5;
+  return select (0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &timeout) < 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_select_supports0=yes
+else $as_nop
+  gl_cv_func_select_supports0=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_select_supports0" >&5
+printf "%s\n" "$gl_cv_func_select_supports0" >&6; }
+    case "$gl_cv_func_select_supports0" in
+      *yes) ;;
+      *) REPLACE_SELECT=1 ;;
+    esac
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether select detects invalid fds" >&5
+printf %s "checking whether select detects invalid fds... " >&6; }
+if test ${gl_cv_func_select_detects_ebadf+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+        if test "$cross_compiling" = yes
+then :
+
+           case "$host_os" in
+                             # Guess yes on Linux systems.
+            linux-* | linux) gl_cv_func_select_detects_ebadf="guessing yes" ;;
+                             # Guess yes on glibc systems.
+            *-gnu* | gnu*)   gl_cv_func_select_detects_ebadf="guessing yes" ;;
+                             # If we don't know, obey --enable-cross-guesses.
+            *)               gl_cv_func_select_detects_ebadf="$gl_cross_guess_normal" ;;
+           esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#if HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
+#include <unistd.h>
+#include <errno.h>
+
+
+$gl_mda_defines
+
+int
+main (void)
+{
+
+  fd_set set;
+  dup2(0, 16);
+  FD_ZERO(&set);
+  FD_SET(16, &set);
+  close(16);
+  struct timeval timeout;
+  timeout.tv_sec = 0;
+  timeout.tv_usec = 5;
+  return select (17, &set, NULL, NULL, &timeout) != -1 || errno != EBADF;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_select_detects_ebadf=yes
+else $as_nop
+  gl_cv_func_select_detects_ebadf=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_select_detects_ebadf" >&5
+printf "%s\n" "$gl_cv_func_select_detects_ebadf" >&6; }
+    case $gl_cv_func_select_detects_ebadf in
+      *yes) ;;
+      *) REPLACE_SELECT=1 ;;
+    esac
+  fi
+
+    LIB_SELECT="$LIBSOCKET"
+  if test $REPLACE_SELECT = 1; then
+    case "$host_os" in
+      mingw*)
+                                cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+int
+main ()
+{
+  MsgWaitForMultipleObjects (0, NULL, 0, 0, 0);
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+
+else $as_nop
+  LIB_SELECT="$LIB_SELECT -luser32"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+        ;;
+    esac
+  fi
+
+
+  if test $REPLACE_SELECT = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS select.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_SELECT" != 1; then
+        if test "$GL_GNULIB_SELECT" = 0; then
+      GL_GNULIB_SELECT=$gl_module_indicator_condition
+    else
+      GL_GNULIB_SELECT="($GL_GNULIB_SELECT || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_SELECT 1" >>confdefs.h
+
+
+
+
+
+
+     if test $ac_cv_func_setenv = no; then
+    HAVE_SETENV=0
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether setenv validates arguments" >&5
+printf %s "checking whether setenv validates arguments... " >&6; }
+if test ${gl_cv_func_setenv_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                        # Guess yes on glibc systems.
+         *-gnu* | gnu*) gl_cv_func_setenv_works="guessing yes" ;;
+                        # Guess yes on musl systems.
+         *-musl*)       gl_cv_func_setenv_works="guessing yes" ;;
+                        # If we don't know, obey --enable-cross-guesses.
+         *)             gl_cv_func_setenv_works="$gl_cross_guess_normal" ;;
+       esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+       #include <stdlib.h>
+       #include <errno.h>
+       #include <string.h>
+
+int
+main (void)
+{
+
+       int result = 0;
+       {
+         if (setenv ("", "", 0) != -1)
+           result |= 1;
+         else if (errno != EINVAL)
+           result |= 2;
+       }
+       {
+         if (setenv ("a", "=", 1) != 0)
+           result |= 4;
+         else if (strcmp (getenv ("a"), "=") != 0)
+           result |= 8;
+       }
+       return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_setenv_works=yes
+else $as_nop
+  gl_cv_func_setenv_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_setenv_works" >&5
+printf "%s\n" "$gl_cv_func_setenv_works" >&6; }
+    case "$gl_cv_func_setenv_works" in
+      *yes) ;;
+      *)
+        REPLACE_SETENV=1
+        ;;
+    esac
+  fi
+
+  if test $HAVE_SETENV = 0 || test $REPLACE_SETENV = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS setenv.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_SETENV" != 1; then
+        if test "$GL_GNULIB_SETENV" = 0; then
+      GL_GNULIB_SETENV=$gl_module_indicator_condition
+    else
+      GL_GNULIB_SETENV="($GL_GNULIB_SETENV || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_SETENV 1" >>confdefs.h
+
+
+
+
+
+
+
+
+    NEED_SETLOCALE_IMPROVED=0
+  case "$host_os" in
+            mingw*) NEED_SETLOCALE_IMPROVED=1 ;;
+            cygwin*)
+      case `uname -r` in
+        1.5.*) NEED_SETLOCALE_IMPROVED=1 ;;
+      esac
+      ;;
+        *)
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether setlocale supports the C locale" >&5
+printf %s "checking whether setlocale supports the C locale... " >&6; }
+if test ${gl_cv_func_setlocale_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                               # Guess no on Android.
+              linux*-android*) gl_cv_func_setlocale_works="guessing no";;
+                               # Guess yes otherwise.
+              *)               gl_cv_func_setlocale_works="guessing yes";;
+            esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+int main ()
+{
+  return setlocale (LC_ALL, "C") == NULL;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_setlocale_works=yes
+else $as_nop
+  gl_cv_func_setlocale_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_setlocale_works" >&5
+printf "%s\n" "$gl_cv_func_setlocale_works" >&6; }
+      case "$gl_cv_func_setlocale_works" in
+        *yes) ;;
+        *) NEED_SETLOCALE_IMPROVED=1 ;;
+      esac
+      ;;
+  esac
+
+printf "%s\n" "#define NEED_SETLOCALE_IMPROVED $NEED_SETLOCALE_IMPROVED" >>confdefs.h
+
+
+    NEED_SETLOCALE_MTSAFE=0
+  if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then
+    NEED_SETLOCALE_MTSAFE=1
+  fi
+
+printf "%s\n" "#define NEED_SETLOCALE_MTSAFE $NEED_SETLOCALE_MTSAFE" >>confdefs.h
+
+
+  if test $NEED_SETLOCALE_IMPROVED = 1 || test $NEED_SETLOCALE_MTSAFE = 1; then
+    REPLACE_SETLOCALE=1
+  fi
+
+  if test $NEED_SETLOCALE_MTSAFE = 1; then
+    LIB_SETLOCALE="$LIB_SETLOCALE_NULL"
+  else
+    LIB_SETLOCALE=
+  fi
+
+
+  if test $REPLACE_SETLOCALE = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS setlocale.$ac_objext"
+
+
+        :
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_SETLOCALE" != 1; then
+        if test "$GL_GNULIB_SETLOCALE" = 0; then
+      GL_GNULIB_SETLOCALE=$gl_module_indicator_condition
+    else
+      GL_GNULIB_SETLOCALE="($GL_GNULIB_SETLOCALE || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_SETLOCALE 1" >>confdefs.h
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional french locale" >&5
+printf %s "checking for a traditional french locale... " >&6; }
+if test ${gt_cv_locale_fr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is only
+     one byte long. This excludes the UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 3 || buf[2] != 'v') return 1;
+# if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+# endif
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the native Windows locale name.
+          if (LC_ALL=French_France.1252 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=French_France.1252
+          else
+            # None found.
+            gt_cv_locale_fr=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr=fr_FR.ISO-8859-1
+            else
+              # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name.
+              if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr=fr_FR.ISO8859-1
+              else
+                # Test for the HP-UX locale name.
+                if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_fr=fr_FR.iso88591
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_fr=fr
+                  else
+                    # None found.
+                    gt_cv_locale_fr=none
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr" >&5
+printf "%s\n" "$gt_cv_locale_fr" >&6; }
+  LOCALE_FR=$gt_cv_locale_fr
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a french Unicode locale" >&5
+printf %s "checking for a french Unicode locale... " >&6; }
+if test ${gt_cv_locale_fr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if !(defined __BEOS__ || defined __HAIKU__)
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
+    return 1;
+#endif
+#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+#endif
+  return 0;
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=French_France.65001
+          else
+            # None found.
+            gt_cv_locale_fr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr_utf8=fr_FR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=fr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_fr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_fr_utf8" >&6; }
+  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional japanese locale" >&5
+printf %s "checking for a traditional japanese locale... " >&6; }
+if test ${gt_cv_locale_ja+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
+     on Cygwin 1.5.x.  */
+  if (MB_CUR_MAX == 1)
+    return 1;
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Note that on native Windows, the Japanese locale is
+          # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
+          # cannot use it here.
+          gt_cv_locale_ja=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the AIX locale name.
+          if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_ja=ja_JP
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_ja=ja_JP.EUC-JP
+            else
+              # Test for the HP-UX, OSF/1, NetBSD locale name.
+              if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_ja=ja_JP.eucJP
+              else
+                # Test for the IRIX, FreeBSD locale name.
+                if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_ja=ja_JP.EUC
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_ja=ja
+                  else
+                    # Special test for NetBSD 1.6.
+                    if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
+                      gt_cv_locale_ja=ja_JP.eucJP
+                    else
+                      # None found.
+                      gt_cv_locale_ja=none
+                    fi
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_ja" >&5
+printf "%s\n" "$gt_cv_locale_ja" >&6; }
+  LOCALE_JA=$gt_cv_locale_ja
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a transitional chinese locale" >&5
+printf %s "checking for a transitional chinese locale... " >&6; }
+if test ${gt_cv_locale_zh_CN+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  /* Check whether a typical GB18030 multibyte sequence is recognized as a
+     single wide character.  This excludes the GB2312 and GBK encodings.  */
+  if (mblen ("\203\062\332\066", 5) != 4)
+    return 1;
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=Chinese_China.54936
+          else
+            # None found.
+            gt_cv_locale_zh_CN=none
+          fi
+          ;;
+        solaris2.8)
+          # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
+          # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
+          # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
+          gt_cv_locale_zh_CN=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the locale name without encoding suffix.
+          if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=zh_CN
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_zh_CN=zh_CN.GB18030
+            else
+              # None found.
+              gt_cv_locale_zh_CN=none
+            fi
+          fi
+          ;;
+      esac
+    else
+      # If there was a link error, due to mblen(), the system is so old that
+      # it certainly doesn't have a chinese locale.
+      gt_cv_locale_zh_CN=none
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_zh_CN" >&5
+printf "%s\n" "$gt_cv_locale_zh_CN" >&6; }
+  LOCALE_ZH_CN=$gt_cv_locale_zh_CN
+
+
+
+  if test "$ac_cv_header_winsock2_h" = yes; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS setsockopt.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_SETSOCKOPT" != 1; then
+        if test "$GL_GNULIB_SETSOCKOPT" = 0; then
+      GL_GNULIB_SETSOCKOPT=$gl_module_indicator_condition
+    else
+      GL_GNULIB_SETSOCKOPT="($GL_GNULIB_SETSOCKOPT || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_SETSOCKOPT 1" >>confdefs.h
+
+
+
+
+
+
+  if test $ac_cv_func_sigaction = yes; then
+    ac_fn_c_check_member "$LINENO" "struct sigaction" "sa_sigaction" "ac_cv_member_struct_sigaction_sa_sigaction" "#include <signal.h>
+"
+if test "x$ac_cv_member_struct_sigaction_sa_sigaction" = xyes
+then :
+
+printf "%s\n" "#define HAVE_STRUCT_SIGACTION_SA_SIGACTION 1" >>confdefs.h
+
+
+fi
+
+    if test $ac_cv_member_struct_sigaction_sa_sigaction = no; then
+      HAVE_STRUCT_SIGACTION_SA_SIGACTION=0
+    fi
+  else
+    HAVE_SIGACTION=0
+  fi
+
+  if test $HAVE_SIGACTION = 0; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS sigaction.$ac_objext"
+
+
+
+
+
+
+
+  ac_fn_c_check_type "$LINENO" "siginfo_t" "ac_cv_type_siginfo_t" "
+#include <signal.h>
+
+"
+if test "x$ac_cv_type_siginfo_t" = xyes
+then :
+
+printf "%s\n" "#define HAVE_SIGINFO_T 1" >>confdefs.h
+
+
+fi
+
+  if test $ac_cv_type_siginfo_t = no; then
+    HAVE_SIGINFO_T=0
+  fi
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_SIGACTION" != 1; then
+        if test "$GL_GNULIB_SIGACTION" = 0; then
+      GL_GNULIB_SIGACTION=$gl_module_indicator_condition
+    else
+      GL_GNULIB_SIGACTION="($GL_GNULIB_SIGACTION || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_SIGACTION 1" >>confdefs.h
+
+
+
+
+
+
+  HAVE_POSIX_SIGNALBLOCKING=0
+  if test "$gl_cv_type_sigset_t" = yes; then
+    ac_fn_c_check_func "$LINENO" "sigprocmask" "ac_cv_func_sigprocmask"
+if test "x$ac_cv_func_sigprocmask" = xyes
+then :
+  HAVE_POSIX_SIGNALBLOCKING=1
+fi
+
+  fi
+
+  if test $HAVE_POSIX_SIGNALBLOCKING = 0; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS sigprocmask.$ac_objext"
+
+    :
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_SIGPROCMASK" != 1; then
+        if test "$GL_GNULIB_SIGPROCMASK" = 0; then
+      GL_GNULIB_SIGPROCMASK=$gl_module_indicator_condition
+    else
+      GL_GNULIB_SIGPROCMASK="($GL_GNULIB_SIGPROCMASK || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_SIGPROCMASK 1" >>confdefs.h
+
+
+
+
+
+
+  ac_fn_c_check_header_compile "$LINENO" "stdint.h" "ac_cv_header_stdint_h" "$ac_includes_default"
+if test "x$ac_cv_header_stdint_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_STDINT_H 1" >>confdefs.h
+
+fi
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for SIZE_MAX" >&5
+printf %s "checking for SIZE_MAX... " >&6; }
+if test ${gl_cv_size_max+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    gl_cv_size_max=no
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <limits.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
+#ifdef SIZE_MAX
+Found it
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Found it" >/dev/null 2>&1
+then :
+  gl_cv_size_max=yes
+fi
+rm -rf conftest*
+
+    if test $gl_cv_size_max != yes; then
+                        if ac_fn_c_compute_int "$LINENO" "sizeof (size_t) * CHAR_BIT - 1" "size_t_bits_minus_1"        "#include <stddef.h>
+#include <limits.h>"
+then :
+
+else $as_nop
+  size_t_bits_minus_1=
+fi
+
+      if ac_fn_c_compute_int "$LINENO" "sizeof (size_t) <= sizeof (unsigned int)" "fits_in_uint"        "#include <stddef.h>"
+then :
+
+else $as_nop
+  fits_in_uint=
+fi
+
+      if test -n "$size_t_bits_minus_1" && test -n "$fits_in_uint"; then
+        if test $fits_in_uint = 1; then
+                              cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stddef.h>
+                 extern size_t foo;
+                 extern unsigned long foo;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  fits_in_uint=0
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+        fi
+                                if test $fits_in_uint = 1; then
+          gl_cv_size_max="(((1U << $size_t_bits_minus_1) - 1) * 2 + 1)"
+        else
+          gl_cv_size_max="(((1UL << $size_t_bits_minus_1) - 1) * 2 + 1)"
+        fi
+      else
+                gl_cv_size_max='((size_t)~(size_t)0)'
+      fi
+    fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_size_max" >&5
+printf "%s\n" "$gl_cv_size_max" >&6; }
+  if test "$gl_cv_size_max" != yes; then
+
+printf "%s\n" "#define SIZE_MAX $gl_cv_size_max" >>confdefs.h
+
+  fi
+
+
+
+
+               ac_fn_check_decl "$LINENO" "sleep" "ac_cv_have_decl_sleep" "#include <unistd.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_sleep" = xyes
+then :
+  ac_have_decl=1
+else $as_nop
+  ac_have_decl=0
+fi
+printf "%s\n" "#define HAVE_DECL_SLEEP $ac_have_decl" >>confdefs.h
+
+
+  if test $ac_cv_have_decl_sleep != yes; then
+    HAVE_SLEEP=0
+  else
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working sleep" >&5
+printf %s "checking for working sleep... " >&6; }
+if test ${gl_cv_func_sleep_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                        # Guess yes on glibc systems.
+         *-gnu* | gnu*) gl_cv_func_sleep_works="guessing yes" ;;
+                        # Guess yes on musl systems.
+         *-musl*)       gl_cv_func_sleep_works="guessing yes" ;;
+                        # Guess no on native Windows.
+         mingw*)        gl_cv_func_sleep_works="guessing no" ;;
+                        # If we don't know, obey --enable-cross-guesses.
+         *)             gl_cv_func_sleep_works="$gl_cross_guess_normal" ;;
+       esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <errno.h>
+#include <unistd.h>
+#include <signal.h>
+static void
+handle_alarm (int sig)
+{
+  if (sig != SIGALRM)
+    _exit (2);
+}
+
+int
+main (void)
+{
+
+    /* Failure to compile this test due to missing alarm is okay,
+       since all such platforms (mingw) also lack sleep.  */
+    unsigned int pentecost = 50 * 24 * 60 * 60; /* 50 days.  */
+    unsigned int remaining;
+    signal (SIGALRM, handle_alarm);
+    alarm (1);
+    remaining = sleep (pentecost);
+    if (remaining > pentecost)
+      return 3;
+    if (remaining <= pentecost - 10)
+      return 4;
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_sleep_works=yes
+else $as_nop
+  gl_cv_func_sleep_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_sleep_works" >&5
+printf "%s\n" "$gl_cv_func_sleep_works" >&6; }
+    case "$gl_cv_func_sleep_works" in
+      *yes) ;;
+      *)
+        REPLACE_SLEEP=1
+        ;;
+    esac
+  fi
+
+  if test $HAVE_SLEEP = 0 || test $REPLACE_SLEEP = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS sleep.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_SLEEP" != 1; then
+        if test "$GL_GNULIB_SLEEP" = 0; then
+      GL_GNULIB_SLEEP=$gl_module_indicator_condition
+    else
+      GL_GNULIB_SLEEP="($GL_GNULIB_SLEEP || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_SLEEP 1" >>confdefs.h
+
+
+
+
+
+
+  gl_cv_func_snprintf_usable=no
+  ac_fn_c_check_func "$LINENO" "snprintf" "ac_cv_func_snprintf"
+if test "x$ac_cv_func_snprintf" = xyes
+then :
+  printf "%s\n" "#define HAVE_SNPRINTF 1" >>confdefs.h
+
+fi
+
+  if test $ac_cv_func_snprintf = yes; then
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether snprintf respects a size of 1" >&5
+printf %s "checking whether snprintf respects a size of 1... " >&6; }
+if test ${gl_cv_func_snprintf_size1+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                            # Guess yes on Android.
+           linux*-android*) gl_cv_func_snprintf_size1="guessing yes" ;;
+                            # Guess yes on native Windows.
+           mingw*)          gl_cv_func_snprintf_size1="guessing yes" ;;
+           *)               gl_cv_func_snprintf_size1="guessing yes" ;;
+         esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#if HAVE_SNPRINTF
+# define my_snprintf snprintf
+#else
+# include <stdarg.h>
+static int my_snprintf (char *buf, int size, const char *format, ...)
+{
+  va_list args;
+  int ret;
+  va_start (args, format);
+  ret = vsnprintf (buf, size, format, args);
+  va_end (args);
+  return ret;
+}
+#endif
+int main()
+{
+  static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' };
+  my_snprintf (buf, 1, "%d", 12345);
+  return buf[1] != 'E';
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_snprintf_size1=yes
+else $as_nop
+  gl_cv_func_snprintf_size1=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_snprintf_size1" >&5
+printf "%s\n" "$gl_cv_func_snprintf_size1" >&6; }
+
+    case "$gl_cv_func_snprintf_size1" in
+      *yes)
+
+        case "$gl_cv_func_snprintf_retval_c99" in
+          *yes)
+
+
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether printf supports POSIX/XSI format strings with positions" >&5
+printf %s "checking whether printf supports POSIX/XSI format strings with positions... " >&6; }
+if test ${gl_cv_func_printf_positions+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+      if test "$cross_compiling" = yes
+then :
+
+         case "$host_os" in
+           netbsd[1-3]* | netbsdelf[1-3]* | netbsdaout[1-3]* | netbsdcoff[1-3]*)
+                            gl_cv_func_printf_positions="guessing no";;
+           beos*)           gl_cv_func_printf_positions="guessing no";;
+                            # Guess yes on Android.
+           linux*-android*) gl_cv_func_printf_positions="guessing yes";;
+                            # Guess no on native Windows.
+           mingw* | pw*)    gl_cv_func_printf_positions="guessing no";;
+           *)               gl_cv_func_printf_positions="guessing yes";;
+         esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#include <string.h>
+/* The string "%2$d %1$d", with dollar characters protected from the shell's
+   dollar expansion (possibly an autoconf bug).  */
+static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' };
+static char buf[100];
+int main ()
+{
+  sprintf (buf, format, 33, 55);
+  return (strcmp (buf, "55 33") != 0);
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_printf_positions=yes
+else $as_nop
+  gl_cv_func_printf_positions=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_printf_positions" >&5
+printf "%s\n" "$gl_cv_func_printf_positions" >&6; }
+
+            case "$gl_cv_func_printf_positions" in
+              *yes)
+                gl_cv_func_snprintf_usable=yes
+                ;;
+            esac
+            ;;
+        esac
+        ;;
+    esac
+  fi
+  if test $gl_cv_func_snprintf_usable = no; then
+
+
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS snprintf.$ac_objext"
+
+  if test $ac_cv_func_snprintf = yes; then
+    REPLACE_SNPRINTF=1
+  else
+
+    if test $ac_cv_have_decl_snprintf = yes; then
+                        REPLACE_SNPRINTF=1
+    fi
+  fi
+  :
+
+  fi
+
+  if test $ac_cv_have_decl_snprintf = no; then
+    HAVE_DECL_SNPRINTF=0
+  fi
+
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_SNPRINTF" != 1; then
+        if test "$GL_GNULIB_SNPRINTF" = 0; then
+      GL_GNULIB_SNPRINTF=$gl_module_indicator_condition
+    else
+      GL_GNULIB_SNPRINTF="($GL_GNULIB_SNPRINTF || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_SNPRINTF 1" >>confdefs.h
+
+
+
+
+
+printf "%s\n" "#define GNULIB_SNPRINTF $gl_module_indicator_condition" >>confdefs.h
+
+
+
+  if test "$ac_cv_header_winsock2_h" = yes; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS socket.$ac_objext"
+
+  fi
+  # When this module is used, sockets may actually occur as file descriptors,
+  # hence it is worth warning if the modules 'close' and 'ioctl' are not used.
+
+
+
+
+
+
+
+
+
+
+
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=1
+    SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=1
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_SOCKET" != 1; then
+        if test "$GL_GNULIB_SOCKET" = 0; then
+      GL_GNULIB_SOCKET=$gl_module_indicator_condition
+    else
+      GL_GNULIB_SOCKET="($GL_GNULIB_SOCKET || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_SOCKET 1" >>confdefs.h
+
+
+
+
+
+     ac_fn_c_check_type "$LINENO" "socklen_t" "ac_cv_type_socklen_t" "
+/* <sys/types.h> is not needed according to POSIX, but the
+   <sys/socket.h> in i386-unknown-freebsd4.10 and
+   powerpc-apple-darwin5.5 required it. */
+#include <sys/types.h>
+#if HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#elif HAVE_WS2TCPIP_H
+# include <ws2tcpip.h>
+#endif
+
+"
+if test "x$ac_cv_type_socklen_t" = xyes
+then :
+
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for socklen_t equivalent" >&5
+printf %s "checking for socklen_t equivalent... " >&6; }
+if test ${gl_cv_socklen_t_equiv+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  # Systems have either "struct sockaddr *" or
+         # "void *" as the second argument to getpeername
+         gl_cv_socklen_t_equiv=
+         for arg2 in "struct sockaddr" void; do
+           for t in int size_t "unsigned int" "long int" "unsigned long int"; do
+             cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+                   #include <sys/socket.h>
+
+                   int getpeername (int, $arg2 *, $t *);
+int
+main (void)
+{
+$t len;
+                  getpeername (0, 0, &len);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_socklen_t_equiv="$t"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+             test "$gl_cv_socklen_t_equiv" != "" && break
+           done
+           test "$gl_cv_socklen_t_equiv" != "" && break
+         done
+         if test "$gl_cv_socklen_t_equiv" = ""; then
+           as_fn_error $? "Cannot find a type to use in place of socklen_t" "$LINENO" 5
+         fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_socklen_t_equiv" >&5
+printf "%s\n" "$gl_cv_socklen_t_equiv" >&6; }
+
+printf "%s\n" "#define socklen_t $gl_cv_socklen_t_equiv" >>confdefs.h
+
+fi
+
+
+
+
+
+
+
+
+
+
+  if test $ac_cv_have_decl_strerror_r = no; then
+    HAVE_DECL_STRERROR_R=0
+  fi
+
+  if test $ac_cv_func_strerror_r = yes; then
+    if test "$ERRNO_H:$REPLACE_STRERROR_0" = :0; then
+      if test $gl_cv_func_strerror_r_posix_signature = yes; then
+        case "$gl_cv_func_strerror_r_works" in
+                    *no) REPLACE_STRERROR_R=1 ;;
+        esac
+      else
+                REPLACE_STRERROR_R=1
+      fi
+    else
+                  REPLACE_STRERROR_R=1
+    fi
+  fi
+
+  if test $HAVE_DECL_STRERROR_R = 0 || test $REPLACE_STRERROR_R = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS strerror_r.$ac_objext"
+
+
+
+
+
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_STRERROR_R" != 1; then
+        if test "$GL_GNULIB_STRERROR_R" = 0; then
+      GL_GNULIB_STRERROR_R=$gl_module_indicator_condition
+    else
+      GL_GNULIB_STRERROR_R="($GL_GNULIB_STRERROR_R || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_STRERROR_R 1" >>confdefs.h
+
+
+
+
+
+printf "%s\n" "#define GNULIB_STRERROR_R_POSIX $gl_module_indicator_condition" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+        if test $ac_cv_func_symlink = no; then
+    HAVE_SYMLINK=0
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether symlink handles trailing slash correctly" >&5
+printf %s "checking whether symlink handles trailing slash correctly... " >&6; }
+if test ${gl_cv_func_symlink_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                             # Guess yes on Linux systems.
+            linux-* | linux) gl_cv_func_symlink_works="guessing yes" ;;
+                             # Guess yes on glibc systems.
+            *-gnu* | gnu*)   gl_cv_func_symlink_works="guessing yes" ;;
+                             # If we don't know, obey --enable-cross-guesses.
+            *)               gl_cv_func_symlink_works="$gl_cross_guess_normal" ;;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <unistd.h>
+
+int
+main (void)
+{
+int result = 0;
+             if (!symlink ("a", "conftest.link/"))
+               result |= 1;
+             if (symlink ("conftest.f", "conftest.lnk2"))
+               result |= 2;
+             else if (!symlink ("a", "conftest.lnk2/"))
+               result |= 4;
+             return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_symlink_works=yes
+else $as_nop
+  gl_cv_func_symlink_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+      rm -f conftest.f conftest.link conftest.lnk2
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_symlink_works" >&5
+printf "%s\n" "$gl_cv_func_symlink_works" >&6; }
+    case "$gl_cv_func_symlink_works" in
+      *yes) ;;
+      *)
+        REPLACE_SYMLINK=1
+        ;;
+    esac
+  fi
+
+  if test $HAVE_SYMLINK = 0 || test $REPLACE_SYMLINK = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS symlink.$ac_objext"
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_SYMLINK" != 1; then
+        if test "$GL_GNULIB_SYMLINK" = 0; then
+      GL_GNULIB_SYMLINK=$gl_module_indicator_condition
+    else
+      GL_GNULIB_SYMLINK="($GL_GNULIB_SYMLINK || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_SYMLINK 1" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  if test $gl_threads_api = posix; then
+    gl_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBMULTITHREAD"
+    ac_fn_c_check_func "$LINENO" "pthread_atfork" "ac_cv_func_pthread_atfork"
+if test "x$ac_cv_func_pthread_atfork" = xyes
+then :
+  printf "%s\n" "#define HAVE_PTHREAD_ATFORK 1" >>confdefs.h
+
+fi
+
+    LIBS="$gl_save_LIBS"
+  fi
+
+  ac_fn_c_check_header_compile "$LINENO" "sys/single_threaded.h" "ac_cv_header_sys_single_threaded_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_single_threaded_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_SINGLE_THREADED_H 1" >>confdefs.h
+
+fi
+
+
+
+
+  if test $ac_cv_have_decl_unsetenv = no; then
+    HAVE_DECL_UNSETENV=0
+  fi
+  ac_fn_c_check_func "$LINENO" "unsetenv" "ac_cv_func_unsetenv"
+if test "x$ac_cv_func_unsetenv" = xyes
+then :
+  printf "%s\n" "#define HAVE_UNSETENV 1" >>confdefs.h
+
+fi
+
+  if test $ac_cv_func_unsetenv = no; then
+    HAVE_UNSETENV=0
+  else
+    HAVE_UNSETENV=1
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for unsetenv() return type" >&5
+printf %s "checking for unsetenv() return type... " >&6; }
+if test ${gt_cv_func_unsetenv_ret+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#undef _BSD
+#define _BSD 1 /* unhide unsetenv declaration in OSF/1 5.1 <stdlib.h> */
+#include <stdlib.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+int unsetenv (const char *name);
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gt_cv_func_unsetenv_ret='int'
+else $as_nop
+  gt_cv_func_unsetenv_ret='void'
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_func_unsetenv_ret" >&5
+printf "%s\n" "$gt_cv_func_unsetenv_ret" >&6; }
+    if test $gt_cv_func_unsetenv_ret = 'void'; then
+
+printf "%s\n" "#define VOID_UNSETENV 1" >>confdefs.h
+
+      REPLACE_UNSETENV=1
+    fi
+
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether unsetenv obeys POSIX" >&5
+printf %s "checking whether unsetenv obeys POSIX... " >&6; }
+if test ${gl_cv_func_unsetenv_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+                    # Guess yes on glibc systems.
+            *-gnu*) gl_cv_func_unsetenv_works="guessing yes" ;;
+                    # If we don't know, obey --enable-cross-guesses.
+            *)      gl_cv_func_unsetenv_works="$gl_cross_guess_normal" ;;
+          esac
+
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+            #include <stdlib.h>
+            #include <errno.h>
+            extern char **environ;
+
+
+$gl_mda_defines
+
+int
+main (void)
+{
+
+            char entry1[] = "a=1";
+            char entry2[] = "b=2";
+            char *env[] = { entry1, entry2, NULL };
+            if (putenv ((char *) "a=1")) return 1;
+            if (putenv (entry2)) return 2;
+            entry2[0] = 'a';
+            unsetenv ("a");
+            if (getenv ("a")) return 3;
+            if (!unsetenv ("") || errno != EINVAL) return 4;
+            entry2[0] = 'b';
+            environ = env;
+            if (!getenv ("a")) return 5;
+            entry2[0] = 'a';
+            unsetenv ("a");
+            if (getenv ("a")) return 6;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  gl_cv_func_unsetenv_works=yes
+else $as_nop
+  gl_cv_func_unsetenv_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_unsetenv_works" >&5
+printf "%s\n" "$gl_cv_func_unsetenv_works" >&6; }
+    case "$gl_cv_func_unsetenv_works" in
+      *yes) ;;
+      *)
+        REPLACE_UNSETENV=1
+        ;;
+    esac
+  fi
+
+  if test $HAVE_UNSETENV = 0 || test $REPLACE_UNSETENV = 1; then
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS unsetenv.$ac_objext"
+
+
+
+
+
+  fi
+
+
+
+
+
+
+
+
+
+    if test "$GL_GNULIB_UNSETENV" != 1; then
+        if test "$GL_GNULIB_UNSETENV" = 0; then
+      GL_GNULIB_UNSETENV=$gl_module_indicator_condition
+    else
+      GL_GNULIB_UNSETENV="($GL_GNULIB_UNSETENV || $gl_module_indicator_condition)"
+    fi
+  fi
+
+
+
+
+
+printf "%s\n" "#define GNULIB_TEST_UNSETENV 1" >>confdefs.h
+
+
+
+
+
+
+  if test $ac_cv_func_vasnprintf = no; then
+
+
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS vasnprintf.$ac_objext"
+
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS printf-args.$ac_objext"
+
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS printf-parse.$ac_objext"
+
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS asnprintf.$ac_objext"
+
+  if test $ac_cv_func_vasnprintf = yes; then
+
+printf "%s\n" "#define REPLACE_VASNPRINTF 1" >>confdefs.h
+
+  fi
+
+
+
+
+
+
+
+
+
+  ac_fn_c_check_type "$LINENO" "ptrdiff_t" "ac_cv_type_ptrdiff_t" "$ac_includes_default"
+if test "x$ac_cv_type_ptrdiff_t" = xyes
+then :
+
+else $as_nop
+
+printf "%s\n" "#define ptrdiff_t long" >>confdefs.h
+
+
+fi
+
+
+
+
+
+
+
+  fi
+
+  abs_aux_dir=`cd "$ac_aux_dir"; pwd`
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional french locale" >&5
+printf %s "checking for a traditional french locale... " >&6; }
+if test ${gt_cv_locale_fr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is only
+     one byte long. This excludes the UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 3 || buf[2] != 'v') return 1;
+# if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+# endif
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the native Windows locale name.
+          if (LC_ALL=French_France.1252 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=French_France.1252
+          else
+            # None found.
+            gt_cv_locale_fr=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr=fr_FR.ISO-8859-1
+            else
+              # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name.
+              if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr=fr_FR.ISO8859-1
+              else
+                # Test for the HP-UX locale name.
+                if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_fr=fr_FR.iso88591
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_fr=fr
+                  else
+                    # None found.
+                    gt_cv_locale_fr=none
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr" >&5
+printf "%s\n" "$gt_cv_locale_fr" >&6; }
+  LOCALE_FR=$gt_cv_locale_fr
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a french Unicode locale" >&5
+printf %s "checking for a french Unicode locale... " >&6; }
+if test ${gt_cv_locale_fr_utf8+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if !(defined __BEOS__ || defined __HAIKU__)
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
+    return 1;
+#endif
+#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+#endif
+  return 0;
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=French_France.65001
+          else
+            # None found.
+            gt_cv_locale_fr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr_utf8=fr_FR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=fr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_fr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_fr_utf8" >&5
+printf "%s\n" "$gt_cv_locale_fr_utf8" >&6; }
+  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a traditional japanese locale" >&5
+printf %s "checking for a traditional japanese locale... " >&6; }
+if test ${gt_cv_locale_ja+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
+     on Cygwin 1.5.x.  */
+  if (MB_CUR_MAX == 1)
+    return 1;
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Note that on native Windows, the Japanese locale is
+          # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
+          # cannot use it here.
+          gt_cv_locale_ja=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the AIX locale name.
+          if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_ja=ja_JP
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_ja=ja_JP.EUC-JP
+            else
+              # Test for the HP-UX, OSF/1, NetBSD locale name.
+              if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_ja=ja_JP.eucJP
+              else
+                # Test for the IRIX, FreeBSD locale name.
+                if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_ja=ja_JP.EUC
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_ja=ja
+                  else
+                    # Special test for NetBSD 1.6.
+                    if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
+                      gt_cv_locale_ja=ja_JP.eucJP
+                    else
+                      # None found.
+                      gt_cv_locale_ja=none
+                    fi
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_ja" >&5
+printf "%s\n" "$gt_cv_locale_ja" >&6; }
+  LOCALE_JA=$gt_cv_locale_ja
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a transitional chinese locale" >&5
+printf %s "checking for a transitional chinese locale... " >&6; }
+if test ${gt_cv_locale_zh_CN+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  /* Check whether a typical GB18030 multibyte sequence is recognized as a
+     single wide character.  This excludes the GB2312 and GBK encodings.  */
+  if (mblen ("\203\062\332\066", 5) != 4)
+    return 1;
+  return 0;
+#endif
+}
+
+_ACEOF
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=Chinese_China.54936
+          else
+            # None found.
+            gt_cv_locale_zh_CN=none
+          fi
+          ;;
+        solaris2.8)
+          # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
+          # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
+          # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
+          gt_cv_locale_zh_CN=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the locale name without encoding suffix.
+          if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=zh_CN
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_zh_CN=zh_CN.GB18030
+            else
+              # None found.
+              gt_cv_locale_zh_CN=none
+            fi
+          fi
+          ;;
+      esac
+    else
+      # If there was a link error, due to mblen(), the system is so old that
+      # it certainly doesn't have a chinese locale.
+      gt_cv_locale_zh_CN=none
+    fi
+    rm -fr conftest*
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_locale_zh_CN" >&5
+printf "%s\n" "$gt_cv_locale_zh_CN" >&6; }
+  LOCALE_ZH_CN=$gt_cv_locale_zh_CN
+
+
+
+  case "$host_os" in
+    mingw*)
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS windows-thread.$ac_objext"
+
+      ;;
+  esac
+
+  case "$host_os" in
+    mingw*)
+
+
+
+
+
+
+
+
+  gltests_LIBOBJS="$gltests_LIBOBJS windows-tls.$ac_objext"
+
+      ;;
+  esac
+
+
+  ac_fn_c_check_header_compile "$LINENO" "stdint.h" "ac_cv_header_stdint_h" "$ac_includes_default"
+if test "x$ac_cv_header_stdint_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_STDINT_H 1" >>confdefs.h
+
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  LIBGREPUTILS_LIBDEPS="$gl_libdeps"
+
+  LIBGREPUTILS_LTLIBDEPS="$gl_ltlibdeps"
+
+  LIBTESTS_LIBDEPS="$gltests_libdeps"
+
+
+
+# Ensure VLAs are not used.
+# Note -Wvla is implicitly added by gl_MANYWARN_ALL_GCC
+
+printf "%s\n" "#define GNULIB_NO_VLA 1" >>confdefs.h
+
+
+# The test suite needs to know if we have a working perl.
+# FIXME: this is suboptimal.  Ideally, we would be able to call gl_PERL
+# with an ACTION-IF-NOT-FOUND argument ...
+cu_have_perl=yes
+case $PERL in *"/missing "*) cu_have_perl=no;; esac
+ if test $cu_have_perl = yes; then
+  HAVE_PERL_TRUE=
+  HAVE_PERL_FALSE='#'
+else
+  HAVE_PERL_TRUE='#'
+  HAVE_PERL_FALSE=
+fi
+
+
+# Check whether --enable-gcc-warnings was given.
+if test ${enable_gcc_warnings+y}
+then :
+  enableval=$enable_gcc_warnings; case $enableval in
+     yes|no) ;;
+     *)      as_fn_error $? "bad value $enableval for gcc-warnings option" "$LINENO" 5 ;;
+   esac
+   gl_gcc_warnings=$enableval
+else $as_nop
+  gl_gcc_warnings=no
+   if test "$GCC" = yes && test -d "$srcdir"/.git; then
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+          #if ! (6 < __GNUC__ + (2 <= __GNUC_MINOR__))
+            #error "--enable-gcc-warnings defaults to 'no' on older GCC"
+          #endif
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_gcc_warnings=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+   fi
+
+fi
+
+
+if test "$gl_gcc_warnings" = yes; then
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler handles -Werror -Wunknown-warning-option" >&5
+printf %s "checking whether C compiler handles -Werror -Wunknown-warning-option... " >&6; }
+if test ${gl_cv_warn_c__Werror__Wunknown_warning_option+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  gl_save_compiler_FLAGS="$CFLAGS"
+  as_fn_append CFLAGS " $gl_unknown_warnings_are_errors -Werror -Wunknown-warning-option"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_warn_c__Werror__Wunknown_warning_option=yes
+else $as_nop
+  gl_cv_warn_c__Werror__Wunknown_warning_option=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+  CFLAGS="$gl_save_compiler_FLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_warn_c__Werror__Wunknown_warning_option" >&5
+printf "%s\n" "$gl_cv_warn_c__Werror__Wunknown_warning_option" >&6; }
+if test "x$gl_cv_warn_c__Werror__Wunknown_warning_option" = xyes
+then :
+  gl_unknown_warnings_are_errors='-Wunknown-warning-option -Werror'
+else $as_nop
+  gl_unknown_warnings_are_errors=
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler handles -Werror" >&5
+printf %s "checking whether C compiler handles -Werror... " >&6; }
+if test ${gl_cv_warn_c__Werror+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  gl_save_compiler_FLAGS="$CFLAGS"
+  as_fn_append CFLAGS " $gl_unknown_warnings_are_errors -Werror"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_warn_c__Werror=yes
+else $as_nop
+  gl_cv_warn_c__Werror=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+  CFLAGS="$gl_save_compiler_FLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_warn_c__Werror" >&5
+printf "%s\n" "$gl_cv_warn_c__Werror" >&6; }
+if test "x$gl_cv_warn_c__Werror" = xyes
+then :
+  as_fn_append WERROR_CFLAGS " -Werror"
+fi
+
+
+
+
+  nw=
+  # This, $nw, is the list of warnings we disable.
+  nw="$nw -Wdeclaration-after-statement" # too useful to forbid
+  nw="$nw -Waggregate-return"       # anachronistic
+  nw="$nw -Wlong-long"              # C90 is anachronistic (lib/gethrxtime.h)
+  nw="$nw -Wc++-compat"             # We don't care about C++ compilers
+  nw="$nw -Wundef"                  # Warns on '#if GNULIB_FOO' etc in gnulib
+  nw="$nw -Wsystem-headers"         # Don't let system headers trigger warnings
+  nw="$nw -Wpadded"                 # Our structs are not padded
+  nw="$nw -Wstack-protector"        # generates false alarms for useful code
+  nw="$nw -Wswitch-default"         # Too many warnings for now
+  nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
+  nw="$nw -Winline"                 # streq.h's streq4, streq6 and strcaseeq6
+  nw="$nw -Wstrict-overflow"        # regexec.c
+
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+  if test -n "$GCC"; then
+
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether -Wno-missing-field-initializers is supported" >&5
+printf %s "checking whether -Wno-missing-field-initializers is supported... " >&6; }
+if test ${gl_cv_cc_nomfi_supported+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -Wextra -Werror -Wno-missing-field-initializers"
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_cc_nomfi_supported=yes
+else $as_nop
+  gl_cv_cc_nomfi_supported=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+       CFLAGS="$gl_save_CFLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_nomfi_supported" >&5
+printf "%s\n" "$gl_cv_cc_nomfi_supported" >&6; }
+
+    if test "$gl_cv_cc_nomfi_supported" = yes; then
+                  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether -Wno-missing-field-initializers is needed" >&5
+printf %s "checking whether -Wno-missing-field-initializers is needed... " >&6; }
+if test ${gl_cv_cc_nomfi_needed+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_save_CFLAGS="$CFLAGS"
+         CFLAGS="$CFLAGS -Wextra -Werror"
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int f (void)
+                {
+                  typedef struct { int a; int b; } s_t;
+                  s_t s1 = { 0, };
+                  return s1.b;
+                }
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_cc_nomfi_needed=no
+else $as_nop
+  gl_cv_cc_nomfi_needed=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+         CFLAGS="$gl_save_CFLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_nomfi_needed" >&5
+printf "%s\n" "$gl_cv_cc_nomfi_needed" >&6; }
+    fi
+
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether -Wuninitialized is supported" >&5
+printf %s "checking whether -Wuninitialized is supported... " >&6; }
+if test ${gl_cv_cc_uninitialized_supported+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -Werror -Wuninitialized"
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  gl_cv_cc_uninitialized_supported=yes
+else $as_nop
+  gl_cv_cc_uninitialized_supported=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+       CFLAGS="$gl_save_CFLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_uninitialized_supported" >&5
+printf "%s\n" "$gl_cv_cc_uninitialized_supported" >&6; }
+
+  fi
+
+  # List all gcc warning categories.
+  # To compare this list to your installed GCC's, run this Bash command:
+  #
+  # comm -3 \
+  #  <((sed -n 's/^  *\(-[^ 0-9][^ ]*\).*/\1/p' manywarnings.m4; \
+  #     awk '/^[^#]/ {print ws}' ../build-aux/gcc-warning.spec) | sort) \
+  #  <(LC_ALL=C gcc --help=warnings | sed -n 's/^  \(-[^ ]*\) .*/\1/p' | sort)
+
+  ws=
+  for gl_manywarn_item in -fanalyzer -fno-common \
+    -Wall \
+    -Warith-conversion \
+    -Wbad-function-cast \
+    -Wcast-align=strict \
+    -Wdate-time \
+    -Wdisabled-optimization \
+    -Wdouble-promotion \
+    -Wduplicated-branches \
+    -Wduplicated-cond \
+    -Wextra \
+    -Wformat-signedness \
+    -Winit-self \
+    -Winline \
+    -Winvalid-pch \
+    -Wlogical-op \
+    -Wmissing-declarations \
+    -Wmissing-include-dirs \
+    -Wmissing-prototypes \
+    -Wnested-externs \
+    -Wnull-dereference \
+    -Wold-style-definition \
+    -Wopenmp-simd \
+    -Woverlength-strings \
+    -Wpacked \
+    -Wpointer-arith \
+    -Wshadow \
+    -Wstack-protector \
+    -Wstrict-overflow \
+    -Wstrict-prototypes \
+    -Wsuggest-attribute=cold \
+    -Wsuggest-attribute=const \
+    -Wsuggest-attribute=format \
+    -Wsuggest-attribute=malloc \
+    -Wsuggest-attribute=noreturn \
+    -Wsuggest-attribute=pure \
+    -Wsuggest-final-methods \
+    -Wsuggest-final-types \
+    -Wsync-nand \
+    -Wsystem-headers \
+    -Wtrampolines \
+    -Wuninitialized \
+    -Wunknown-pragmas \
+    -Wunsafe-loop-optimizations \
+    -Wunused-macros \
+    -Wvariadic-macros \
+    -Wvector-operation-performance \
+    -Wvla \
+    -Wwrite-strings \
+    \
+    ; do
+    as_fn_append ws " $gl_manywarn_item"
+  done
+
+  # gcc --help=warnings outputs an unusual form for these options; list
+  # them here so that the above 'comm' command doesn't report a false match.
+  as_fn_append ws ' -Warray-bounds=2'
+  as_fn_append ws ' -Wattribute-alias=2'
+  as_fn_append ws ' -Wformat-overflow=2'
+  as_fn_append ws ' -Wformat=2'
+  as_fn_append ws ' -Wformat-truncation=2'
+  as_fn_append ws ' -Wimplicit-fallthrough=5'
+  as_fn_append ws ' -Wshift-overflow=2'
+  as_fn_append ws ' -Wunused-const-variable=2'
+  as_fn_append ws ' -Wvla-larger-than=4031'
+
+  # These are needed for older GCC versions.
+  if test -n "$GCC"; then
+    case `($CC --version) 2>/dev/null` in
+      'gcc (GCC) '[0-3].* | \
+      'gcc (GCC) '4.[0-7].*)
+        as_fn_append ws ' -fdiagnostics-show-option'
+        as_fn_append ws ' -funit-at-a-time'
+          ;;
+    esac
+  fi
+
+  # Disable specific options as needed.
+  if test "$gl_cv_cc_nomfi_needed" = yes; then
+    as_fn_append ws ' -Wno-missing-field-initializers'
+  fi
+
+  if test "$gl_cv_cc_uninitialized_supported" = no; then
+    as_fn_append ws ' -Wno-uninitialized'
+  fi
+
+  # This warning have too many false alarms in GCC 11.2.1.
+  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101713
+  as_fn_append ws ' -Wno-analyzer-malloc-leak'
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+  gl_warn_set=
+  set x $ws; shift
+  for gl_warn_item
+  do
+    case " $nw " in
+      *" $gl_warn_item "*)
+        ;;
+      *)
+        as_fn_append gl_warn_set " $gl_warn_item"
+        ;;
+    esac
+  done
+  ws=$gl_warn_set
+
+  for w in $ws; do
+
+
+as_gl_Warn=`printf "%s\n" "gl_cv_warn_c_$w" | $as_tr_sh`
+gl_positive="$w"
+case $gl_positive in
+  -Wno-*) gl_positive=-W`expr "X$gl_positive" : 'X-Wno-\(.*\)'` ;;
+esac
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler handles $w" >&5
+printf %s "checking whether C compiler handles $w... " >&6; }
+if eval test \${$as_gl_Warn+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  gl_save_compiler_FLAGS="$CFLAGS"
+  as_fn_append CFLAGS " $gl_unknown_warnings_are_errors $gl_positive"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  eval "$as_gl_Warn=yes"
+else $as_nop
+  eval "$as_gl_Warn=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+  CFLAGS="$gl_save_compiler_FLAGS"
+
+fi
+eval ac_res=\$$as_gl_Warn
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+if eval test \"x\$"$as_gl_Warn"\" = x"yes"
+then :
+  as_fn_append WARN_CFLAGS " $w"
+fi
+
+
+  done
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler handles -Wno-missing-field-initializers" >&5
+printf %s "checking whether C compiler handles -Wno-missing-field-initializers... " >&6; }
+if test ${gl_cv_warn_c__Wno_missing_field_initializers+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  gl_save_compiler_FLAGS="$CFLAGS"
+  as_fn_append CFLAGS " $gl_unknown_warnings_are_errors -Wmissing-field-initializers"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_warn_c__Wno_missing_field_initializers=yes
+else $as_nop
+  gl_cv_warn_c__Wno_missing_field_initializers=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+  CFLAGS="$gl_save_compiler_FLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_warn_c__Wno_missing_field_initializers" >&5
+printf "%s\n" "$gl_cv_warn_c__Wno_missing_field_initializers" >&6; }
+if test "x$gl_cv_warn_c__Wno_missing_field_initializers" = xyes
+then :
+  as_fn_append WARN_CFLAGS " -Wno-missing-field-initializers"
+fi
+
+ # We need this one
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler handles -Wno-sign-compare" >&5
+printf %s "checking whether C compiler handles -Wno-sign-compare... " >&6; }
+if test ${gl_cv_warn_c__Wno_sign_compare+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  gl_save_compiler_FLAGS="$CFLAGS"
+  as_fn_append CFLAGS " $gl_unknown_warnings_are_errors -Wsign-compare"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_warn_c__Wno_sign_compare=yes
+else $as_nop
+  gl_cv_warn_c__Wno_sign_compare=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+  CFLAGS="$gl_save_compiler_FLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_warn_c__Wno_sign_compare" >&5
+printf "%s\n" "$gl_cv_warn_c__Wno_sign_compare" >&6; }
+if test "x$gl_cv_warn_c__Wno_sign_compare" = xyes
+then :
+  as_fn_append WARN_CFLAGS " -Wno-sign-compare"
+fi
+
+     # Too many warnings for now
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler handles -Wno-unused-parameter" >&5
+printf %s "checking whether C compiler handles -Wno-unused-parameter... " >&6; }
+if test ${gl_cv_warn_c__Wno_unused_parameter+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  gl_save_compiler_FLAGS="$CFLAGS"
+  as_fn_append CFLAGS " $gl_unknown_warnings_are_errors -Wunused-parameter"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_warn_c__Wno_unused_parameter=yes
+else $as_nop
+  gl_cv_warn_c__Wno_unused_parameter=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+  CFLAGS="$gl_save_compiler_FLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_warn_c__Wno_unused_parameter" >&5
+printf "%s\n" "$gl_cv_warn_c__Wno_unused_parameter" >&6; }
+if test "x$gl_cv_warn_c__Wno_unused_parameter" = xyes
+then :
+  as_fn_append WARN_CFLAGS " -Wno-unused-parameter"
+fi
+
+ # Too many warnings for now
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler handles -Wno-cast-function-type" >&5
+printf %s "checking whether C compiler handles -Wno-cast-function-type... " >&6; }
+if test ${gl_cv_warn_c__Wno_cast_function_type+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  gl_save_compiler_FLAGS="$CFLAGS"
+  as_fn_append CFLAGS " $gl_unknown_warnings_are_errors -Wcast-function-type"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_warn_c__Wno_cast_function_type=yes
+else $as_nop
+  gl_cv_warn_c__Wno_cast_function_type=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+  CFLAGS="$gl_save_compiler_FLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_warn_c__Wno_cast_function_type" >&5
+printf "%s\n" "$gl_cv_warn_c__Wno_cast_function_type" >&6; }
+if test "x$gl_cv_warn_c__Wno_cast_function_type" = xyes
+then :
+  as_fn_append WARN_CFLAGS " -Wno-cast-function-type"
+fi
+
+ # sig-handler.h's sa_handler_t cast
+
+  # In spite of excluding -Wlogical-op above, it is enabled, as of
+  # gcc 4.5.0 20090517, and it provokes warnings in cat.c, dd.c, truncate.c
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler handles -Wno-logical-op" >&5
+printf %s "checking whether C compiler handles -Wno-logical-op... " >&6; }
+if test ${gl_cv_warn_c__Wno_logical_op+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  gl_save_compiler_FLAGS="$CFLAGS"
+  as_fn_append CFLAGS " $gl_unknown_warnings_are_errors -Wlogical-op"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_warn_c__Wno_logical_op=yes
+else $as_nop
+  gl_cv_warn_c__Wno_logical_op=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+  CFLAGS="$gl_save_compiler_FLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_warn_c__Wno_logical_op" >&5
+printf "%s\n" "$gl_cv_warn_c__Wno_logical_op" >&6; }
+if test "x$gl_cv_warn_c__Wno_logical_op" = xyes
+then :
+  as_fn_append WARN_CFLAGS " -Wno-logical-op"
+fi
+
+
+
+
+
+
+printf "%s\n" "#define lint 1" >>confdefs.h
+
+
+printf "%s\n" "#define GNULIB_PORTCHECK 1" >>confdefs.h
+
+
+
+  # We use a slightly smaller set of warning options for lib/.
+  # Remove the following and save the result in GNULIB_WARN_CFLAGS.
+  nw=
+  nw="$nw -Wunused-macros"
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler handles -Wno-format-nonliteral" >&5
+printf %s "checking whether C compiler handles -Wno-format-nonliteral... " >&6; }
+if test ${gl_cv_warn_c__Wno_format_nonliteral+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  gl_save_compiler_FLAGS="$CFLAGS"
+  as_fn_append CFLAGS " $gl_unknown_warnings_are_errors -Wformat-nonliteral"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_warn_c__Wno_format_nonliteral=yes
+else $as_nop
+  gl_cv_warn_c__Wno_format_nonliteral=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+  CFLAGS="$gl_save_compiler_FLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_warn_c__Wno_format_nonliteral" >&5
+printf "%s\n" "$gl_cv_warn_c__Wno_format_nonliteral" >&6; }
+if test "x$gl_cv_warn_c__Wno_format_nonliteral" = xyes
+then :
+  as_fn_append WARN_CFLAGS " -Wno-format-nonliteral"
+fi
+
+
+
+  gl_warn_set=
+  set x $WARN_CFLAGS; shift
+  for gl_warn_item
+  do
+    case " $nw " in
+      *" $gl_warn_item "*)
+        ;;
+      *)
+        as_fn_append gl_warn_set " $gl_warn_item"
+        ;;
+    esac
+  done
+  GNULIB_WARN_CFLAGS=$gl_warn_set
+
+
+
+  # For gnulib-tests, the set is slightly smaller still.
+  nw=
+  nw="$nw -Wstrict-prototypes"
+  # It's not worth being this picky about test programs.
+  nw="$nw -Wsuggest-attribute=const"
+  nw="$nw -Wsuggest-attribute=pure"
+  nw="$nw -Wsuggest-attribute=format"
+  nw="$nw -Wformat-truncation=2"    # False alarm in strerror_r.c
+  nw="$nw -Wold-style-definition"
+
+  # Disable to avoid warnings in e.g., test-intprops.c and test-limits-h.c
+  # due to overlong expansions like this:
+  # test-intprops.c:147:5: error: string literal of length 9531 exceeds \
+  # maximum length 4095 that ISO C99 compilers are required to support
+  nw="$nw -Woverlength-strings"
+
+
+  gl_warn_set=
+  set x $GNULIB_WARN_CFLAGS; shift
+  for gl_warn_item
+  do
+    case " $nw " in
+      *" $gl_warn_item "*)
+        ;;
+      *)
+        as_fn_append gl_warn_set " $gl_warn_item"
+        ;;
+    esac
+  done
+  GNULIB_TEST_WARN_CFLAGS=$gl_warn_set
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler handles -Wno-return-type" >&5
+printf %s "checking whether C compiler handles -Wno-return-type... " >&6; }
+if test ${gl_cv_warn_c__Wno_return_type+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  gl_save_compiler_FLAGS="$CFLAGS"
+  as_fn_append CFLAGS " $gl_unknown_warnings_are_errors -Wreturn-type"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gl_cv_warn_c__Wno_return_type=yes
+else $as_nop
+  gl_cv_warn_c__Wno_return_type=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+  CFLAGS="$gl_save_compiler_FLAGS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gl_cv_warn_c__Wno_return_type" >&5
+printf "%s\n" "$gl_cv_warn_c__Wno_return_type" >&6; }
+if test "x$gl_cv_warn_c__Wno_return_type" = xyes
+then :
+  as_fn_append GNULIB_TEST_WARN_CFLAGS " -Wno-return-type"
+fi
+
+
+
+fi
+
+# By default, argmatch should fail calling usage (EXIT_FAILURE).
+
+printf "%s\n" "#define ARGMATCH_DIE usage (EXIT_FAILURE)" >>confdefs.h
+
+
+printf "%s\n" "#define ARGMATCH_DIE_DECL void usage (int _e)" >>confdefs.h
+
+
+ac_header_dirent=no
+for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h; do
+  as_ac_Header=`printf "%s\n" "ac_cv_header_dirent_$ac_hdr" | $as_tr_sh`
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_hdr that defines DIR" >&5
+printf %s "checking for $ac_hdr that defines DIR... " >&6; }
+if eval test \${$as_ac_Header+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <$ac_hdr>
+
+int
+main (void)
+{
+if ((DIR *) 0)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  eval "$as_ac_Header=yes"
+else $as_nop
+  eval "$as_ac_Header=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+eval ac_res=\$$as_ac_Header
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+if eval test \"x\$"$as_ac_Header"\" = x"yes"
+then :
+  cat >>confdefs.h <<_ACEOF
+#define `printf "%s\n" "HAVE_$ac_hdr" | $as_tr_cpp` 1
+_ACEOF
+
+ac_header_dirent=$ac_hdr; break
+fi
+
+done
+# Two versions of opendir et al. are in -ldir and -lx on SCO Xenix.
+if test $ac_header_dirent = dirent.h; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing opendir" >&5
+printf %s "checking for library containing opendir... " >&6; }
+if test ${ac_cv_search_opendir+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char opendir ();
+int
+main (void)
+{
+return opendir ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' dir
+do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_search_opendir=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext
+  if test ${ac_cv_search_opendir+y}
+then :
+  break
+fi
+done
+if test ${ac_cv_search_opendir+y}
+then :
+
+else $as_nop
+  ac_cv_search_opendir=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_opendir" >&5
+printf "%s\n" "$ac_cv_search_opendir" >&6; }
+ac_res=$ac_cv_search_opendir
+if test "$ac_res" != no
+then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+fi
+
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing opendir" >&5
+printf %s "checking for library containing opendir... " >&6; }
+if test ${ac_cv_search_opendir+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char opendir ();
+int
+main (void)
+{
+return opendir ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' x
+do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_search_opendir=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext
+  if test ${ac_cv_search_opendir+y}
+then :
+  break
+fi
+done
+if test ${ac_cv_search_opendir+y}
+then :
+
+else $as_nop
+  ac_cv_search_opendir=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_opendir" >&5
+printf "%s\n" "$ac_cv_search_opendir" >&6; }
+ac_res=$ac_cv_search_opendir
+if test "$ac_res" != no
+then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+fi
+
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether closedir returns void" >&5
+printf %s "checking whether closedir returns void... " >&6; }
+if test ${ac_cv_func_closedir_void+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <$ac_header_dirent>
+
+int
+main (void)
+{
+
+  return closedir(0);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_func_closedir_void=no
+else $as_nop
+  ac_cv_func_closedir_void=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_closedir_void" >&5
+printf "%s\n" "$ac_cv_func_closedir_void" >&6; }
+if test $ac_cv_func_closedir_void = yes; then
+
+printf "%s\n" "#define CLOSEDIR_VOID 1" >>confdefs.h
+
+fi
+
+
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether NLS is requested" >&5
+printf %s "checking whether NLS is requested... " >&6; }
+    # Check whether --enable-nls was given.
+if test ${enable_nls+y}
+then :
+  enableval=$enable_nls; USE_NLS=$enableval
+else $as_nop
+  USE_NLS=yes
+fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $USE_NLS" >&5
+printf "%s\n" "$USE_NLS" >&6; }
+
+
+
+
+      GETTEXT_MACRO_VERSION=0.18
+
+
+
+
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
+  # contains only /bin. Note that ksh looks also at the FPATH variable,
+  # so we have to set that as well for the test.
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+           || PATH_SEPARATOR=';'
+       }
+fi
+
+# Find out how to test for executable files. Don't use a zero-byte file,
+# as systems may use methods other than mode bits to determine executability.
+cat >conf$$.file <<_ASEOF
+#! /bin/sh
+exit 0
+_ASEOF
+chmod +x conf$$.file
+if test -x conf$$.file >/dev/null 2>&1; then
+  ac_executable_p="test -x"
+else
+  ac_executable_p="test -f"
+fi
+rm -f conf$$.file
+
+# Extract the first word of "msgfmt", so it can be a program name with args.
+set dummy msgfmt; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_MSGFMT+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case "$MSGFMT" in
+  [\\/]* | ?:[\\/]*)
+    ac_cv_path_MSGFMT="$MSGFMT" # Let the user override the test with a path.
+    ;;
+  *)
+    ac_save_IFS="$IFS"; IFS=$PATH_SEPARATOR
+    for ac_dir in $PATH; do
+      IFS="$ac_save_IFS"
+      test -z "$ac_dir" && ac_dir=.
+      for ac_exec_ext in '' $ac_executable_extensions; do
+        if $ac_executable_p "$ac_dir/$ac_word$ac_exec_ext"; then
+          echo "$as_me: trying $ac_dir/$ac_word..." >&5
+          if $ac_dir/$ac_word --statistics /dev/null >&5 2>&1 &&
+     (if $ac_dir/$ac_word --statistics /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi); then
+            ac_cv_path_MSGFMT="$ac_dir/$ac_word$ac_exec_ext"
+            break 2
+          fi
+        fi
+      done
+    done
+    IFS="$ac_save_IFS"
+  test -z "$ac_cv_path_MSGFMT" && ac_cv_path_MSGFMT=":"
+    ;;
+esac
+fi
+MSGFMT="$ac_cv_path_MSGFMT"
+if test "$MSGFMT" != ":"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MSGFMT" >&5
+printf "%s\n" "$MSGFMT" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  # Extract the first word of "gmsgfmt", so it can be a program name with args.
+set dummy gmsgfmt; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_GMSGFMT+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case $GMSGFMT in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_GMSGFMT="$GMSGFMT" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_GMSGFMT="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  test -z "$ac_cv_path_GMSGFMT" && ac_cv_path_GMSGFMT="$MSGFMT"
+  ;;
+esac
+fi
+GMSGFMT=$ac_cv_path_GMSGFMT
+if test -n "$GMSGFMT"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $GMSGFMT" >&5
+printf "%s\n" "$GMSGFMT" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+
+    case `$MSGFMT --version | sed 1q | sed -e 's,^[^0-9]*,,'` in
+    '' | 0.[0-9] | 0.[0-9].* | 0.1[0-4] | 0.1[0-4].*) MSGFMT_015=: ;;
+    *) MSGFMT_015=$MSGFMT ;;
+  esac
+
+  case `$GMSGFMT --version | sed 1q | sed -e 's,^[^0-9]*,,'` in
+    '' | 0.[0-9] | 0.[0-9].* | 0.1[0-4] | 0.1[0-4].*) GMSGFMT_015=: ;;
+    *) GMSGFMT_015=$GMSGFMT ;;
+  esac
+
+
+
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
+  # contains only /bin. Note that ksh looks also at the FPATH variable,
+  # so we have to set that as well for the test.
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+           || PATH_SEPARATOR=';'
+       }
+fi
+
+# Find out how to test for executable files. Don't use a zero-byte file,
+# as systems may use methods other than mode bits to determine executability.
+cat >conf$$.file <<_ASEOF
+#! /bin/sh
+exit 0
+_ASEOF
+chmod +x conf$$.file
+if test -x conf$$.file >/dev/null 2>&1; then
+  ac_executable_p="test -x"
+else
+  ac_executable_p="test -f"
+fi
+rm -f conf$$.file
+
+# Extract the first word of "xgettext", so it can be a program name with args.
+set dummy xgettext; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_XGETTEXT+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case "$XGETTEXT" in
+  [\\/]* | ?:[\\/]*)
+    ac_cv_path_XGETTEXT="$XGETTEXT" # Let the user override the test with a path.
+    ;;
+  *)
+    ac_save_IFS="$IFS"; IFS=$PATH_SEPARATOR
+    for ac_dir in $PATH; do
+      IFS="$ac_save_IFS"
+      test -z "$ac_dir" && ac_dir=.
+      for ac_exec_ext in '' $ac_executable_extensions; do
+        if $ac_executable_p "$ac_dir/$ac_word$ac_exec_ext"; then
+          echo "$as_me: trying $ac_dir/$ac_word..." >&5
+          if $ac_dir/$ac_word --omit-header --copyright-holder= --msgid-bugs-address= /dev/null >&5 2>&1 &&
+     (if $ac_dir/$ac_word --omit-header --copyright-holder= --msgid-bugs-address= /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi); then
+            ac_cv_path_XGETTEXT="$ac_dir/$ac_word$ac_exec_ext"
+            break 2
+          fi
+        fi
+      done
+    done
+    IFS="$ac_save_IFS"
+  test -z "$ac_cv_path_XGETTEXT" && ac_cv_path_XGETTEXT=":"
+    ;;
+esac
+fi
+XGETTEXT="$ac_cv_path_XGETTEXT"
+if test "$XGETTEXT" != ":"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $XGETTEXT" >&5
+printf "%s\n" "$XGETTEXT" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+    rm -f messages.po
+
+    case `$XGETTEXT --version | sed 1q | sed -e 's,^[^0-9]*,,'` in
+    '' | 0.[0-9] | 0.[0-9].* | 0.1[0-4] | 0.1[0-4].*) XGETTEXT_015=: ;;
+    *) XGETTEXT_015=$XGETTEXT ;;
+  esac
+
+
+
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
+  # contains only /bin. Note that ksh looks also at the FPATH variable,
+  # so we have to set that as well for the test.
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+           || PATH_SEPARATOR=';'
+       }
+fi
+
+# Find out how to test for executable files. Don't use a zero-byte file,
+# as systems may use methods other than mode bits to determine executability.
+cat >conf$$.file <<_ASEOF
+#! /bin/sh
+exit 0
+_ASEOF
+chmod +x conf$$.file
+if test -x conf$$.file >/dev/null 2>&1; then
+  ac_executable_p="test -x"
+else
+  ac_executable_p="test -f"
+fi
+rm -f conf$$.file
+
+# Extract the first word of "msgmerge", so it can be a program name with args.
+set dummy msgmerge; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_MSGMERGE+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case "$MSGMERGE" in
+  [\\/]* | ?:[\\/]*)
+    ac_cv_path_MSGMERGE="$MSGMERGE" # Let the user override the test with a path.
+    ;;
+  *)
+    ac_save_IFS="$IFS"; IFS=$PATH_SEPARATOR
+    for ac_dir in $PATH; do
+      IFS="$ac_save_IFS"
+      test -z "$ac_dir" && ac_dir=.
+      for ac_exec_ext in '' $ac_executable_extensions; do
+        if $ac_executable_p "$ac_dir/$ac_word$ac_exec_ext"; then
+          echo "$as_me: trying $ac_dir/$ac_word..." >&5
+          if $ac_dir/$ac_word --update -q /dev/null /dev/null >&5 2>&1; then
+            ac_cv_path_MSGMERGE="$ac_dir/$ac_word$ac_exec_ext"
+            break 2
+          fi
+        fi
+      done
+    done
+    IFS="$ac_save_IFS"
+  test -z "$ac_cv_path_MSGMERGE" && ac_cv_path_MSGMERGE=":"
+    ;;
+esac
+fi
+MSGMERGE="$ac_cv_path_MSGMERGE"
+if test "$MSGMERGE" != ":"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MSGMERGE" >&5
+printf "%s\n" "$MSGMERGE" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+        test -n "$localedir" || localedir='${datadir}/locale'
+
+
+    test -n "${XGETTEXT_EXTRA_OPTIONS+set}" || XGETTEXT_EXTRA_OPTIONS=
+
+
+  ac_config_commands="$ac_config_commands po-directories"
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for CFPreferencesCopyAppValue" >&5
+printf %s "checking for CFPreferencesCopyAppValue... " >&6; }
+if test ${gt_cv_func_CFPreferencesCopyAppValue+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gt_save_LIBS="$LIBS"
+     LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <CoreFoundation/CFPreferences.h>
+int
+main (void)
+{
+CFPreferencesCopyAppValue(NULL, NULL)
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gt_cv_func_CFPreferencesCopyAppValue=yes
+else $as_nop
+  gt_cv_func_CFPreferencesCopyAppValue=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+     LIBS="$gt_save_LIBS"
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_func_CFPreferencesCopyAppValue" >&5
+printf "%s\n" "$gt_cv_func_CFPreferencesCopyAppValue" >&6; }
+  if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then
+
+printf "%s\n" "#define HAVE_CFPREFERENCESCOPYAPPVALUE 1" >>confdefs.h
+
+  fi
+                    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for CFLocaleCopyPreferredLanguages" >&5
+printf %s "checking for CFLocaleCopyPreferredLanguages... " >&6; }
+if test ${gt_cv_func_CFLocaleCopyPreferredLanguages+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gt_save_LIBS="$LIBS"
+     LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <CoreFoundation/CFLocale.h>
+int
+main (void)
+{
+CFLocaleCopyPreferredLanguages();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  gt_cv_func_CFLocaleCopyPreferredLanguages=yes
+else $as_nop
+  gt_cv_func_CFLocaleCopyPreferredLanguages=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+     LIBS="$gt_save_LIBS"
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_cv_func_CFLocaleCopyPreferredLanguages" >&5
+printf "%s\n" "$gt_cv_func_CFLocaleCopyPreferredLanguages" >&6; }
+  if test $gt_cv_func_CFLocaleCopyPreferredLanguages = yes; then
+
+printf "%s\n" "#define HAVE_CFLOCALECOPYPREFERREDLANGUAGES 1" >>confdefs.h
+
+  fi
+  INTL_MACOSX_LIBS=
+  if test $gt_cv_func_CFPreferencesCopyAppValue = yes \
+     || test $gt_cv_func_CFLocaleCopyPreferredLanguages = yes; then
+    INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation"
+  fi
+
+
+
+
+
+
+  LIBINTL=
+  LTLIBINTL=
+  POSUB=
+
+    case " $gt_needs " in
+    *" need-formatstring-macros "*) gt_api_version=3 ;;
+    *" need-ngettext "*) gt_api_version=2 ;;
+    *) gt_api_version=1 ;;
+  esac
+  gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc"
+  gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl"
+
+    if test "$USE_NLS" = "yes"; then
+    gt_use_preinstalled_gnugettext=no
+
+
+        if test $gt_api_version -ge 3; then
+          gt_revision_test_code='
+#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
+#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
+#endif
+typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
+'
+        else
+          gt_revision_test_code=
+        fi
+        if test $gt_api_version -ge 2; then
+          gt_expression_test_code=' + * ngettext ("", "", 0)'
+        else
+          gt_expression_test_code=
+        fi
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for GNU gettext in libc" >&5
+printf %s "checking for GNU gettext in libc... " >&6; }
+if eval test \${$gt_func_gnugettext_libc+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <libintl.h>
+$gt_revision_test_code
+extern int _nl_msg_cat_cntr;
+extern int *_nl_domain_bindings;
+
+int
+main (void)
+{
+
+bindtextdomain ("", "");
+return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_domain_bindings
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  eval "$gt_func_gnugettext_libc=yes"
+else $as_nop
+  eval "$gt_func_gnugettext_libc=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$gt_func_gnugettext_libc
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+
+        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
+
+
+
+
+
+          am_save_CPPFLAGS="$CPPFLAGS"
+
+  for element in $INCICONV; do
+    haveit=
+    for x in $CPPFLAGS; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
+    fi
+  done
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for iconv" >&5
+printf %s "checking for iconv... " >&6; }
+if test ${am_cv_func_iconv+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+    am_cv_func_iconv="no, consider installing GNU libiconv"
+    am_cv_lib_iconv=no
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdlib.h>
+#include <iconv.h>
+
+int
+main (void)
+{
+iconv_t cd = iconv_open("","");
+           iconv(cd,NULL,NULL,NULL,NULL);
+           iconv_close(cd);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  am_cv_func_iconv=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+    if test "$am_cv_func_iconv" != yes; then
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS $LIBICONV"
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdlib.h>
+#include <iconv.h>
+
+int
+main (void)
+{
+iconv_t cd = iconv_open("","");
+             iconv(cd,NULL,NULL,NULL,NULL);
+             iconv_close(cd);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  am_cv_lib_iconv=yes
+        am_cv_func_iconv=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+      LIBS="$am_save_LIBS"
+    fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $am_cv_func_iconv" >&5
+printf "%s\n" "$am_cv_func_iconv" >&6; }
+  if test "$am_cv_func_iconv" = yes; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working iconv" >&5
+printf %s "checking for working iconv... " >&6; }
+if test ${am_cv_func_iconv_works+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+                  am_save_LIBS="$LIBS"
+      if test $am_cv_lib_iconv = yes; then
+        LIBS="$LIBS $LIBICONV"
+      fi
+      am_cv_func_iconv_works=no
+      for ac_iconv_const in '' 'const'; do
+        if test "$cross_compiling" = yes
+then :
+  case "$host_os" in
+             aix* | hpux*) am_cv_func_iconv_works="guessing no" ;;
+             *)            am_cv_func_iconv_works="guessing yes" ;;
+           esac
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <iconv.h>
+#include <string.h>
+
+#ifndef ICONV_CONST
+# define ICONV_CONST $ac_iconv_const
+#endif
+
+int
+main (void)
+{
+int result = 0;
+  /* Test against AIX 5.1...7.2 bug: Failures are not distinguishable from
+     successful returns.  This is even documented in
+     <https://www.ibm.com/support/knowledgecenter/ssw_aix_72/i_bostechref/iconv.html> */
+  {
+    iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8");
+    if (cd_utf8_to_88591 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\342\202\254"; /* EURO SIGN */
+        char buf[10];
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_utf8_to_88591,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res == 0)
+          result |= 1;
+        iconv_close (cd_utf8_to_88591);
+      }
+  }
+  /* Test against Solaris 10 bug: Failures are not distinguishable from
+     successful returns.  */
+  {
+    iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646");
+    if (cd_ascii_to_88591 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\263";
+        char buf[10];
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_ascii_to_88591,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res == 0)
+          result |= 2;
+        iconv_close (cd_ascii_to_88591);
+      }
+  }
+  /* Test against AIX 6.1..7.1 bug: Buffer overrun.  */
+  {
+    iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1");
+    if (cd_88591_to_utf8 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\304";
+        static char buf[2] = { (char)0xDE, (char)0xAD };
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = 1;
+        char *outptr = buf;
+        size_t outbytesleft = 1;
+        size_t res = iconv (cd_88591_to_utf8,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res != (size_t)(-1) || outptr - buf > 1 || buf[1] != (char)0xAD)
+          result |= 4;
+        iconv_close (cd_88591_to_utf8);
+      }
+  }
+#if 0 /* This bug could be worked around by the caller.  */
+  /* Test against HP-UX 11.11 bug: Positive return value instead of 0.  */
+  {
+    iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591");
+    if (cd_88591_to_utf8 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+        char buf[50];
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_88591_to_utf8,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if ((int)res > 0)
+          result |= 8;
+        iconv_close (cd_88591_to_utf8);
+      }
+  }
+#endif
+  /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
+     provided.  */
+  {
+    /* Try standardized names.  */
+    iconv_t cd1 = iconv_open ("UTF-8", "EUC-JP");
+    /* Try IRIX, OSF/1 names.  */
+    iconv_t cd2 = iconv_open ("UTF-8", "eucJP");
+    /* Try AIX names.  */
+    iconv_t cd3 = iconv_open ("UTF-8", "IBM-eucJP");
+    /* Try HP-UX names.  */
+    iconv_t cd4 = iconv_open ("utf8", "eucJP");
+    if (cd1 == (iconv_t)(-1) && cd2 == (iconv_t)(-1)
+        && cd3 == (iconv_t)(-1) && cd4 == (iconv_t)(-1))
+      result |= 16;
+    if (cd1 != (iconv_t)(-1))
+      iconv_close (cd1);
+    if (cd2 != (iconv_t)(-1))
+      iconv_close (cd2);
+    if (cd3 != (iconv_t)(-1))
+      iconv_close (cd3);
+    if (cd4 != (iconv_t)(-1))
+      iconv_close (cd4);
+  }
+  return result;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  am_cv_func_iconv_works=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        test "$am_cv_func_iconv_works" = no || break
+      done
+      LIBS="$am_save_LIBS"
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $am_cv_func_iconv_works" >&5
+printf "%s\n" "$am_cv_func_iconv_works" >&6; }
+    case "$am_cv_func_iconv_works" in
+      *no) am_func_iconv=no am_cv_lib_iconv=no ;;
+      *)   am_func_iconv=yes ;;
+    esac
+  else
+    am_func_iconv=no am_cv_lib_iconv=no
+  fi
+  if test "$am_func_iconv" = yes; then
+
+printf "%s\n" "#define HAVE_ICONV 1" >>confdefs.h
+
+  fi
+  if test "$am_cv_lib_iconv" = yes; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to link with libiconv" >&5
+printf %s "checking how to link with libiconv... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LIBICONV" >&5
+printf "%s\n" "$LIBICONV" >&6; }
+  else
+            CPPFLAGS="$am_save_CPPFLAGS"
+    LIBICONV=
+    LTLIBICONV=
+  fi
+
+
+
+
+
+
+
+
+
+
+    use_additional=yes
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+    eval additional_libdir2=\"$exec_prefix/$acl_libdirstem2\"
+    eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\"
+
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+
+# Check whether --with-libintl-prefix was given.
+if test ${with_libintl_prefix+y}
+then :
+  withval=$with_libintl_prefix;
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+          eval additional_libdir2=\"$exec_prefix/$acl_libdirstem2\"
+          eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\"
+
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/$acl_libdirstem"
+        additional_libdir2="$withval/$acl_libdirstem2"
+        additional_libdir3="$withval/$acl_libdirstem3"
+      fi
+    fi
+
+fi
+
+  if test "X$additional_libdir2" = "X$additional_libdir"; then
+    additional_libdir2=
+  fi
+  if test "X$additional_libdir3" = "X$additional_libdir"; then
+    additional_libdir3=
+  fi
+      LIBINTL=
+  LTLIBINTL=
+  INCINTL=
+  LIBINTL_PREFIX=
+      HAVE_LIBINTL=
+  rpathdirs=
+  ltrpathdirs=
+  names_already_handled=
+  names_next_round='intl '
+  while test -n "$names_next_round"; do
+    names_this_round="$names_next_round"
+    names_next_round=
+    for name in $names_this_round; do
+      already_handled=
+      for n in $names_already_handled; do
+        if test "$n" = "$name"; then
+          already_handled=yes
+          break
+        fi
+      done
+      if test -z "$already_handled"; then
+        names_already_handled="$names_already_handled $name"
+                        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'`
+        eval value=\"\$HAVE_LIB$uppername\"
+        if test -n "$value"; then
+          if test "$value" = yes; then
+            eval value=\"\$LIB$uppername\"
+            test -z "$value" || LIBINTL="${LIBINTL}${LIBINTL:+ }$value"
+            eval value=\"\$LTLIB$uppername\"
+            test -z "$value" || LTLIBINTL="${LTLIBINTL}${LTLIBINTL:+ }$value"
+          else
+                                    :
+          fi
+        else
+                              found_dir=
+          found_la=
+          found_so=
+          found_a=
+          eval libname=\"$acl_libname_spec\"    # typically: libname=lib$name
+          if test -n "$acl_shlibext"; then
+            shrext=".$acl_shlibext"             # typically: shrext=.so
+          else
+            shrext=
+          fi
+          if test $use_additional = yes; then
+            for additional_libdir_variable in additional_libdir additional_libdir2 additional_libdir3; do
+              if test "X$found_dir" = "X"; then
+                eval dir=\$$additional_libdir_variable
+                if test -n "$dir"; then
+                                                      if test -n "$acl_shlibext"; then
+                    if test -f "$dir/$libname$shrext" && acl_is_expected_elfclass < "$dir/$libname$shrext"; then
+                      found_dir="$dir"
+                      found_so="$dir/$libname$shrext"
+                    else
+                      if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
+                        ver=`(cd "$dir" && \
+                              for f in "$libname$shrext".*; do echo "$f"; done \
+                              | sed -e "s,^$libname$shrext\\\\.,," \
+                              | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
+                              | sed 1q ) 2>/dev/null`
+                        if test -n "$ver" && test -f "$dir/$libname$shrext.$ver" && acl_is_expected_elfclass < "$dir/$libname$shrext.$ver"; then
+                          found_dir="$dir"
+                          found_so="$dir/$libname$shrext.$ver"
+                        fi
+                      else
+                        eval library_names=\"$acl_library_names_spec\"
+                        for f in $library_names; do
+                          if test -f "$dir/$f" && acl_is_expected_elfclass < "$dir/$f"; then
+                            found_dir="$dir"
+                            found_so="$dir/$f"
+                            break
+                          fi
+                        done
+                      fi
+                    fi
+                  fi
+                                    if test "X$found_dir" = "X"; then
+                    if test -f "$dir/$libname.$acl_libext" && ${AR-ar} -p "$dir/$libname.$acl_libext" | acl_is_expected_elfclass; then
+                      found_dir="$dir"
+                      found_a="$dir/$libname.$acl_libext"
+                    fi
+                  fi
+                  if test "X$found_dir" != "X"; then
+                    if test -f "$dir/$libname.la"; then
+                      found_la="$dir/$libname.la"
+                    fi
+                  fi
+                fi
+              fi
+            done
+          fi
+          if test "X$found_dir" = "X"; then
+            for x in $LDFLAGS $LTLIBINTL; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+              case "$x" in
+                -L*)
+                  dir=`echo "X$x" | sed -e 's/^X-L//'`
+                                    if test -n "$acl_shlibext"; then
+                    if test -f "$dir/$libname$shrext" && acl_is_expected_elfclass < "$dir/$libname$shrext"; then
+                      found_dir="$dir"
+                      found_so="$dir/$libname$shrext"
+                    else
+                      if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
+                        ver=`(cd "$dir" && \
+                              for f in "$libname$shrext".*; do echo "$f"; done \
+                              | sed -e "s,^$libname$shrext\\\\.,," \
+                              | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
+                              | sed 1q ) 2>/dev/null`
+                        if test -n "$ver" && test -f "$dir/$libname$shrext.$ver" && acl_is_expected_elfclass < "$dir/$libname$shrext.$ver"; then
+                          found_dir="$dir"
+                          found_so="$dir/$libname$shrext.$ver"
+                        fi
+                      else
+                        eval library_names=\"$acl_library_names_spec\"
+                        for f in $library_names; do
+                          if test -f "$dir/$f" && acl_is_expected_elfclass < "$dir/$f"; then
+                            found_dir="$dir"
+                            found_so="$dir/$f"
+                            break
+                          fi
+                        done
+                      fi
+                    fi
+                  fi
+                                    if test "X$found_dir" = "X"; then
+                    if test -f "$dir/$libname.$acl_libext" && ${AR-ar} -p "$dir/$libname.$acl_libext" | acl_is_expected_elfclass; then
+                      found_dir="$dir"
+                      found_a="$dir/$libname.$acl_libext"
+                    fi
+                  fi
+                  if test "X$found_dir" != "X"; then
+                    if test -f "$dir/$libname.la"; then
+                      found_la="$dir/$libname.la"
+                    fi
+                  fi
+                  ;;
+              esac
+              if test "X$found_dir" != "X"; then
+                break
+              fi
+            done
+          fi
+          if test "X$found_dir" != "X"; then
+                        LTLIBINTL="${LTLIBINTL}${LTLIBINTL:+ }-L$found_dir -l$name"
+            if test "X$found_so" != "X"; then
+                                                        if test "$enable_rpath" = no \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem" \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem2" \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem3"; then
+                                LIBINTL="${LIBINTL}${LIBINTL:+ }$found_so"
+              else
+                                                                                haveit=
+                for x in $ltrpathdirs; do
+                  if test "X$x" = "X$found_dir"; then
+                    haveit=yes
+                    break
+                  fi
+                done
+                if test -z "$haveit"; then
+                  ltrpathdirs="$ltrpathdirs $found_dir"
+                fi
+                                if test "$acl_hardcode_direct" = yes; then
+                                                      LIBINTL="${LIBINTL}${LIBINTL:+ }$found_so"
+                else
+                  if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
+                                                            LIBINTL="${LIBINTL}${LIBINTL:+ }$found_so"
+                                                            haveit=
+                    for x in $rpathdirs; do
+                      if test "X$x" = "X$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      rpathdirs="$rpathdirs $found_dir"
+                    fi
+                  else
+                                                                                haveit=
+                    for x in $LDFLAGS $LIBINTL; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                      if test "X$x" = "X-L$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      LIBINTL="${LIBINTL}${LIBINTL:+ }-L$found_dir"
+                    fi
+                    if test "$acl_hardcode_minus_L" != no; then
+                                                                                        LIBINTL="${LIBINTL}${LIBINTL:+ }$found_so"
+                    else
+                                                                                                                                                                                LIBINTL="${LIBINTL}${LIBINTL:+ }-l$name"
+                    fi
+                  fi
+                fi
+              fi
+            else
+              if test "X$found_a" != "X"; then
+                                LIBINTL="${LIBINTL}${LIBINTL:+ }$found_a"
+              else
+                                                LIBINTL="${LIBINTL}${LIBINTL:+ }-L$found_dir -l$name"
+              fi
+            fi
+                        additional_includedir=
+            case "$found_dir" in
+              */$acl_libdirstem | */$acl_libdirstem/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'`
+                if test "$name" = 'intl'; then
+                  LIBINTL_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+              */$acl_libdirstem2 | */$acl_libdirstem2/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'`
+                if test "$name" = 'intl'; then
+                  LIBINTL_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+              */$acl_libdirstem3 | */$acl_libdirstem3/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem3/"'*$,,'`
+                if test "$name" = 'intl'; then
+                  LIBINTL_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+            esac
+            if test "X$additional_includedir" != "X"; then
+                                                                                                                if test "X$additional_includedir" != "X/usr/include"; then
+                haveit=
+                if test "X$additional_includedir" = "X/usr/local/include"; then
+                  if test -n "$GCC"; then
+                    case $host_os in
+                      linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+                    esac
+                  fi
+                fi
+                if test -z "$haveit"; then
+                  for x in $CPPFLAGS $INCINTL; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                    if test "X$x" = "X-I$additional_includedir"; then
+                      haveit=yes
+                      break
+                    fi
+                  done
+                  if test -z "$haveit"; then
+                    if test -d "$additional_includedir"; then
+                                            INCINTL="${INCINTL}${INCINTL:+ }-I$additional_includedir"
+                    fi
+                  fi
+                fi
+              fi
+            fi
+                        if test -n "$found_la"; then
+                                                        save_libdir="$libdir"
+              case "$found_la" in
+                */* | *\\*) . "$found_la" ;;
+                *) . "./$found_la" ;;
+              esac
+              libdir="$save_libdir"
+                            for dep in $dependency_libs; do
+                case "$dep" in
+                  -L*)
+                    dependency_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+                                                                                                                                                                if test "X$dependency_libdir" != "X/usr/$acl_libdirstem" \
+                       && test "X$dependency_libdir" != "X/usr/$acl_libdirstem2" \
+                       && test "X$dependency_libdir" != "X/usr/$acl_libdirstem3"; then
+                      haveit=
+                      if test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem" \
+                         || test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem2" \
+                         || test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem3"; then
+                        if test -n "$GCC"; then
+                          case $host_os in
+                            linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+                          esac
+                        fi
+                      fi
+                      if test -z "$haveit"; then
+                        haveit=
+                        for x in $LDFLAGS $LIBINTL; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                          if test "X$x" = "X-L$dependency_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$dependency_libdir"; then
+                                                        LIBINTL="${LIBINTL}${LIBINTL:+ }-L$dependency_libdir"
+                          fi
+                        fi
+                        haveit=
+                        for x in $LDFLAGS $LTLIBINTL; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                          if test "X$x" = "X-L$dependency_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$dependency_libdir"; then
+                                                        LTLIBINTL="${LTLIBINTL}${LTLIBINTL:+ }-L$dependency_libdir"
+                          fi
+                        fi
+                      fi
+                    fi
+                    ;;
+                  -R*)
+                    dir=`echo "X$dep" | sed -e 's/^X-R//'`
+                    if test "$enable_rpath" != no; then
+                                                                  haveit=
+                      for x in $rpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        rpathdirs="$rpathdirs $dir"
+                      fi
+                                                                  haveit=
+                      for x in $ltrpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        ltrpathdirs="$ltrpathdirs $dir"
+                      fi
+                    fi
+                    ;;
+                  -l*)
+                                                                                                                                                                dep=`echo "X$dep" | sed -e 's/^X-l//'`
+                    if test "X$dep" != Xc \
+                       || case $host_os in
+                            linux* | gnu* | k*bsd*-gnu) false ;;
+                            *)                          true ;;
+                          esac; then
+                      names_next_round="$names_next_round $dep"
+                    fi
+                    ;;
+                  *.la)
+                                                                                names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+                    ;;
+                  *)
+                                        LIBINTL="${LIBINTL}${LIBINTL:+ }$dep"
+                    LTLIBINTL="${LTLIBINTL}${LTLIBINTL:+ }$dep"
+                    ;;
+                esac
+              done
+            fi
+          else
+                                                            LIBINTL="${LIBINTL}${LIBINTL:+ }-l$name"
+            LTLIBINTL="${LTLIBINTL}${LTLIBINTL:+ }-l$name"
+          fi
+        fi
+      fi
+    done
+  done
+  if test "X$rpathdirs" != "X"; then
+    if test -n "$acl_hardcode_libdir_separator"; then
+                        alldirs=
+      for found_dir in $rpathdirs; do
+        alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir"
+      done
+            acl_save_libdir="$libdir"
+      libdir="$alldirs"
+      eval flag=\"$acl_hardcode_libdir_flag_spec\"
+      libdir="$acl_save_libdir"
+      LIBINTL="${LIBINTL}${LIBINTL:+ }$flag"
+    else
+            for found_dir in $rpathdirs; do
+        acl_save_libdir="$libdir"
+        libdir="$found_dir"
+        eval flag=\"$acl_hardcode_libdir_flag_spec\"
+        libdir="$acl_save_libdir"
+        LIBINTL="${LIBINTL}${LIBINTL:+ }$flag"
+      done
+    fi
+  fi
+  if test "X$ltrpathdirs" != "X"; then
+            for found_dir in $ltrpathdirs; do
+      LTLIBINTL="${LTLIBINTL}${LTLIBINTL:+ }-R$found_dir"
+    done
+  fi
+
+
+
+
+
+          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for GNU gettext in libintl" >&5
+printf %s "checking for GNU gettext in libintl... " >&6; }
+if eval test \${$gt_func_gnugettext_libintl+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  gt_save_CPPFLAGS="$CPPFLAGS"
+            CPPFLAGS="$CPPFLAGS $INCINTL"
+            gt_save_LIBS="$LIBS"
+            LIBS="$LIBS $LIBINTL"
+                        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <libintl.h>
+$gt_revision_test_code
+extern int _nl_msg_cat_cntr;
+extern
+#ifdef __cplusplus
+"C"
+#endif
+const char *_nl_expand_alias (const char *);
+
+int
+main (void)
+{
+
+bindtextdomain ("", "");
+return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  eval "$gt_func_gnugettext_libintl=yes"
+else $as_nop
+  eval "$gt_func_gnugettext_libintl=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+                        if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
+              LIBS="$LIBS $LIBICONV"
+              cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <libintl.h>
+$gt_revision_test_code
+extern int _nl_msg_cat_cntr;
+extern
+#ifdef __cplusplus
+"C"
+#endif
+const char *_nl_expand_alias (const char *);
+
+int
+main (void)
+{
+
+bindtextdomain ("", "");
+return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  LIBINTL="$LIBINTL $LIBICONV"
+                 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
+                 eval "$gt_func_gnugettext_libintl=yes"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+            fi
+            CPPFLAGS="$gt_save_CPPFLAGS"
+            LIBS="$gt_save_LIBS"
+fi
+eval ac_res=\$$gt_func_gnugettext_libintl
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+        fi
+
+                                        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
+           || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
+                && test "$PACKAGE" != gettext-runtime \
+                && test "$PACKAGE" != gettext-tools; }; then
+          gt_use_preinstalled_gnugettext=yes
+        else
+                    LIBINTL=
+          LTLIBINTL=
+          INCINTL=
+        fi
+
+
+
+    if test -n "$INTL_MACOSX_LIBS"; then
+      if test "$gt_use_preinstalled_gnugettext" = "yes" \
+         || test "$nls_cv_use_gnu_gettext" = "yes"; then
+                LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
+        LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
+      fi
+    fi
+
+    if test "$gt_use_preinstalled_gnugettext" = "yes" \
+       || test "$nls_cv_use_gnu_gettext" = "yes"; then
+
+printf "%s\n" "#define ENABLE_NLS 1" >>confdefs.h
+
+    else
+      USE_NLS=no
+    fi
+  fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether to use NLS" >&5
+printf %s "checking whether to use NLS... " >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $USE_NLS" >&5
+printf "%s\n" "$USE_NLS" >&6; }
+  if test "$USE_NLS" = "yes"; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking where the gettext function comes from" >&5
+printf %s "checking where the gettext function comes from... " >&6; }
+    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
+      if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
+        gt_source="external libintl"
+      else
+        gt_source="libc"
+      fi
+    else
+      gt_source="included intl directory"
+    fi
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $gt_source" >&5
+printf "%s\n" "$gt_source" >&6; }
+  fi
+
+  if test "$USE_NLS" = "yes"; then
+
+    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
+      if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to link with libintl" >&5
+printf %s "checking how to link with libintl... " >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LIBINTL" >&5
+printf "%s\n" "$LIBINTL" >&6; }
+
+  for element in $INCINTL; do
+    haveit=
+    for x in $CPPFLAGS; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
+    fi
+  done
+
+      fi
+
+
+printf "%s\n" "#define HAVE_GETTEXT 1" >>confdefs.h
+
+
+printf "%s\n" "#define HAVE_DCGETTEXT 1" >>confdefs.h
+
+    fi
+
+        POSUB=po
+  fi
+
+
+
+    INTLLIBS="$LIBINTL"
+
+
+
+
+
+
+
+ if test "$ac_use_included_regex" = yes; then
+  USE_INCLUDED_REGEX_TRUE=
+  USE_INCLUDED_REGEX_FALSE='#'
+else
+  USE_INCLUDED_REGEX_TRUE='#'
+  USE_INCLUDED_REGEX_FALSE=
+fi
+
+if test "$ac_use_included_regex" = no; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: Included lib/regex.c not used" >&5
+printf "%s\n" "$as_me: WARNING: Included lib/regex.c not used" >&2;}
+fi
+
+
+  # Check whether --enable-perl-regexp was given.
+if test ${enable_perl_regexp+y}
+then :
+  enableval=$enable_perl_regexp; case $enableval in
+       yes|no) test_pcre=$enableval;;
+       *) as_fn_error $? "invalid value $enableval for --disable-perl-regexp" "$LINENO" 5;;
+     esac
+else $as_nop
+  test_pcre=maybe
+fi
+
+
+
+
+  use_pcre=no
+
+  if test $test_pcre != no; then
+
+pkg_failed=no
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for PCRE" >&5
+printf %s "checking for PCRE... " >&6; }
+
+if test -n "$PCRE_CFLAGS"; then
+    pkg_cv_PCRE_CFLAGS="$PCRE_CFLAGS"
+ elif test -n "$PKG_CONFIG"; then
+    if test -n "$PKG_CONFIG" && \
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libpcre\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "libpcre") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  pkg_cv_PCRE_CFLAGS=`$PKG_CONFIG --cflags "libpcre" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes
+else
+  pkg_failed=yes
+fi
+ else
+    pkg_failed=untried
+fi
+if test -n "$PCRE_LIBS"; then
+    pkg_cv_PCRE_LIBS="$PCRE_LIBS"
+ elif test -n "$PKG_CONFIG"; then
+    if test -n "$PKG_CONFIG" && \
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libpcre\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "libpcre") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  pkg_cv_PCRE_LIBS=`$PKG_CONFIG --libs "libpcre" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes
+else
+  pkg_failed=yes
+fi
+ else
+    pkg_failed=untried
+fi
+
+
+
+if test $pkg_failed = yes; then
+   	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+        _pkg_short_errors_supported=yes
+else
+        _pkg_short_errors_supported=no
+fi
+        if test $_pkg_short_errors_supported = yes; then
+	        PCRE_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "libpcre" 2>&1`
+        else
+	        PCRE_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "libpcre" 2>&1`
+        fi
+	# Put the nasty error message in config.log where it belongs
+	echo "$PCRE_PKG_ERRORS" >&5
+
+	: ${PCRE_LIBS=-lpcre}
+elif test $pkg_failed = untried; then
+     	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+	: ${PCRE_LIBS=-lpcre}
+else
+	PCRE_CFLAGS=$pkg_cv_PCRE_CFLAGS
+	PCRE_LIBS=$pkg_cv_PCRE_LIBS
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+
+fi
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pcre_compile" >&5
+printf %s "checking for pcre_compile... " >&6; }
+if test ${pcre_cv_have_pcre_compile+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  pcre_saved_CFLAGS=$CFLAGS
+       pcre_saved_LIBS=$LIBS
+       CFLAGS="$CFLAGS $PCRE_CFLAGS"
+       LIBS="$PCRE_LIBS $LIBS"
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pcre.h>
+
+int
+main (void)
+{
+pcre *p = pcre_compile (0, 0, 0, 0, 0);
+              return !p;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  pcre_cv_have_pcre_compile=yes
+else $as_nop
+  pcre_cv_have_pcre_compile=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+       CFLAGS=$pcre_saved_CFLAGS
+       LIBS=$pcre_saved_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $pcre_cv_have_pcre_compile" >&5
+printf "%s\n" "$pcre_cv_have_pcre_compile" >&6; }
+
+    if test "$pcre_cv_have_pcre_compile" = yes; then
+      use_pcre=yes
+    elif test $test_pcre = maybe; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: GNU grep will be built without pcre support." >&5
+printf "%s\n" "$as_me: WARNING: GNU grep will be built without pcre support." >&2;}
+    else
+      as_fn_error $? "pcre support not available" "$LINENO" 5
+    fi
+  fi
+
+  if test $use_pcre = yes; then
+
+printf "%s\n" "#define HAVE_LIBPCRE 1" >>confdefs.h
+
+  else
+    PCRE_CFLAGS=
+    PCRE_LIBS=
+  fi
+
+ if test $use_pcre = yes; then
+  USE_PCRE_TRUE=
+  USE_PCRE_FALSE='#'
+else
+  USE_PCRE_TRUE='#'
+  USE_PCRE_FALSE=
+fi
+
+
+case $host_os in
+  mingw*) suffix=w32 ;;
+  *) suffix=posix ;;
+esac
+COLORIZE_SOURCE=colorize-$suffix.c
+
+
+ac_config_files="$ac_config_files Makefile lib/Makefile src/Makefile tests/Makefile po/Makefile.in doc/Makefile gnulib-tests/Makefile"
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(
+  for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+printf "%s\n" "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+
+  (set) 2>&1 |
+    case $as_nl`(ac_space=' '; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      # `set' does not quote correctly, so add quotes: double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \.
+      sed -n \
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;; #(
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+) |
+  sed '
+     /^ac_cv_env_/b end
+     t clear
+     :clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test ${\1+y} || &/
+     t end
+     s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     :end' >>confcache
+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
+  if test -w "$cache_file"; then
+    if test "x$cache_file" != "x/dev/null"; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+printf "%s\n" "$as_me: updating cache $cache_file" >&6;}
+      if test ! -f "$cache_file" || test -h "$cache_file"; then
+	cat confcache >"$cache_file"
+      else
+        case $cache_file in #(
+        */* | ?:*)
+	  mv -f confcache "$cache_file"$$ &&
+	  mv -f "$cache_file"$$ "$cache_file" ;; #(
+        *)
+	  mv -f confcache "$cache_file" ;;
+	esac
+      fi
+    fi
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+printf "%s\n" "$as_me: not updating unwritable cache $cache_file" >&6;}
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+U=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
+  ac_i=`printf "%s\n" "$ac_i" | sed "$ac_script"`
+  # 2. Prepend LIBOBJDIR.  When used with automake>=1.10 LIBOBJDIR
+  #    will be set to the directory where LIBOBJS objects are built.
+  as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
+  as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking that generated files are newer than configure" >&5
+printf %s "checking that generated files are newer than configure... " >&6; }
+   if test -n "$am_sleep_pid"; then
+     # Hide warnings about reused PIDs.
+     wait $am_sleep_pid 2>/dev/null
+   fi
+   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: done" >&5
+printf "%s\n" "done" >&6; }
+ if test -n "$EXEEXT"; then
+  am__EXEEXT_TRUE=
+  am__EXEEXT_FALSE='#'
+else
+  am__EXEEXT_TRUE='#'
+  am__EXEEXT_FALSE=
+fi
+
+if test -z "${AMDEP_TRUE}" && test -z "${AMDEP_FALSE}"; then
+  as_fn_error $? "conditional \"AMDEP\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${am__fastdepCC_TRUE}" && test -z "${am__fastdepCC_FALSE}"; then
+  as_fn_error $? "conditional \"am__fastdepCC\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_COND_LIBTOOL_TRUE}" && test -z "${GL_COND_LIBTOOL_FALSE}"; then
+  as_fn_error $? "conditional \"GL_COND_LIBTOOL\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_ALLOCA_H_TRUE}" && test -z "${GL_GENERATE_ALLOCA_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_ALLOCA_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_ERRNO_H_TRUE}" && test -z "${GL_GENERATE_ERRNO_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_ERRNO_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_FNMATCH_H_TRUE}" && test -z "${GL_GENERATE_FNMATCH_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_FNMATCH_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_FNMATCH_H_TRUE}" && test -z "${GL_GENERATE_FNMATCH_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_FNMATCH_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_ICONV_H_TRUE}" && test -z "${GL_GENERATE_ICONV_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_ICONV_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_ICONV_H_TRUE}" && test -z "${GL_GENERATE_ICONV_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_ICONV_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_ICONV_H_TRUE}" && test -z "${GL_GENERATE_ICONV_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_ICONV_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_LIMITS_H_TRUE}" && test -z "${GL_GENERATE_LIMITS_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_LIMITS_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_LIMITS_H_TRUE}" && test -z "${GL_GENERATE_LIMITS_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_LIMITS_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_STDINT_H_TRUE}" && test -z "${GL_GENERATE_STDINT_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_STDINT_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_STDDEF_H_TRUE}" && test -z "${GL_GENERATE_STDDEF_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_STDDEF_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+CONFIG_INCLUDE=config.h
+
+if test -z "${GL_GENERATE_SIGSEGV_H_TRUE}" && test -z "${GL_GENERATE_SIGSEGV_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_SIGSEGV_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_STDALIGN_H_TRUE}" && test -z "${GL_GENERATE_STDALIGN_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_STDALIGN_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_STDARG_H_TRUE}" && test -z "${GL_GENERATE_STDARG_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_STDARG_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${GL_GENERATE_STDBOOL_H_TRUE}" && test -z "${GL_GENERATE_STDBOOL_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_STDBOOL_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${LIBUNISTRING_COMPILE_UNISTR_U8_MBTOUCR_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNISTR_U8_MBTOUCR_FALSE}"; then
+  as_fn_error $? "conditional \"LIBUNISTRING_COMPILE_UNISTR_U8_MBTOUCR\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${LIBUNISTRING_COMPILE_UNISTR_U8_UCTOMB_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNISTR_U8_UCTOMB_FALSE}"; then
+  as_fn_error $? "conditional \"LIBUNISTRING_COMPILE_UNISTR_U8_UCTOMB\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH_TRUE}" && test -z "${LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH_FALSE}"; then
+  as_fn_error $? "conditional \"LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+
+    gl_libobjs=
+    gl_ltlibobjs=
+    if test -n "$gl_LIBOBJS"; then
+      # Remove the extension.
+      sed_drop_objext='s/\.o$//;s/\.obj$//'
+      for i in `for i in $gl_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
+        gl_libobjs="$gl_libobjs $i.$ac_objext"
+        gl_ltlibobjs="$gl_ltlibobjs $i.lo"
+      done
+    fi
+    gl_LIBOBJS=$gl_libobjs
+
+    gl_LTLIBOBJS=$gl_ltlibobjs
+
+
+if test -z "${GL_GENERATE_FLOAT_H_TRUE}" && test -z "${GL_GENERATE_FLOAT_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_FLOAT_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+
+if test -z "${GL_GENERATE_NETINET_IN_H_TRUE}" && test -z "${GL_GENERATE_NETINET_IN_H_FALSE}"; then
+  as_fn_error $? "conditional \"GL_GENERATE_NETINET_IN_H\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+
+
+    gltests_libobjs=
+    gltests_ltlibobjs=
+    if test -n "$gltests_LIBOBJS"; then
+      # Remove the extension.
+      sed_drop_objext='s/\.o$//;s/\.obj$//'
+      for i in `for i in $gltests_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
+        gltests_libobjs="$gltests_libobjs $i.$ac_objext"
+        gltests_ltlibobjs="$gltests_ltlibobjs $i.lo"
+      done
+    fi
+    gltests_LIBOBJS=$gltests_libobjs
+
+    gltests_LTLIBOBJS=$gltests_ltlibobjs
+
+
+if test -z "${HAVE_PERL_TRUE}" && test -z "${HAVE_PERL_FALSE}"; then
+  as_fn_error $? "conditional \"HAVE_PERL\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${USE_INCLUDED_REGEX_TRUE}" && test -z "${USE_INCLUDED_REGEX_FALSE}"; then
+  as_fn_error $? "conditional \"USE_INCLUDED_REGEX\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${USE_PCRE_TRUE}" && test -z "${USE_PCRE_FALSE}"; then
+  as_fn_error $? "conditional \"USE_PCRE\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+
+: "${CONFIG_STATUS=./config.status}"
+ac_write_fail=0
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+printf "%s\n" "$as_me: creating $CONFIG_STATUS" >&6;}
+as_write_fail=0
+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+as_nop=:
+if test ${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
+then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else $as_nop
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+
+# Reset variables that may have inherited troublesome values from
+# the environment.
+
+# IFS needs to be set, to space, tab, and newline, in precisely that order.
+# (If _AS_PATH_WALK were called with IFS unset, it would have the
+# side effect of setting IFS to empty, thus disabling word splitting.)
+# Quoting is to prevent editors from complaining about space-tab.
+as_nl='
+'
+export as_nl
+IFS=" ""	$as_nl"
+
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# Ensure predictable behavior from utilities with locale-dependent output.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# We cannot yet rely on "unset" to work, but we need these variables
+# to be unset--not just set to an empty or harmless value--now, to
+# avoid bugs in old shells (e.g. pre-3.0 UWIN ksh).  This construct
+# also avoids known problems related to "unset" and subshell syntax
+# in other old shells (e.g. bash 2.01 and pdksh 5.2.14).
+for as_var in BASH_ENV ENV MAIL MAILPATH CDPATH
+do eval test \${$as_var+y} \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+
+# Ensure that fds 0, 1, and 2 are open.
+if (exec 3>&0) 2>/dev/null; then :; else exec 0</dev/null; fi
+if (exec 3>&1) 2>/dev/null; then :; else exec 1>/dev/null; fi
+if (exec 3>&2)            ; then :; else exec 2>/dev/null; fi
+
+# The user is always right.
+if ${PATH_SEPARATOR+false} :; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    test -r "$as_dir$0" && as_myself=$as_dir$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  printf "%s\n" "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  printf "%s\n" "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null
+then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else $as_nop
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null
+then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else $as_nop
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+# Determine whether it's possible to make 'echo' print without a newline.
+# These variables are no longer used directly by Autoconf, but are AC_SUBSTed
+# for compatibility with existing Makefiles.
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+# For backward compatibility with old third-party macros, we provide
+# the shell variables $as_echo and $as_echo_n.  New code should use
+# AS_ECHO(["message"]) and AS_ECHO_N(["message"]), respectively.
+as_echo='printf %s\n'
+as_echo_n='printf %s'
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -pR'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -pR'
+  fi
+else
+  as_ln_s='cp -pR'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`printf "%s\n" "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 6>&1
+## ----------------------------------- ##
+## Main body of $CONFIG_STATUS script. ##
+## ----------------------------------- ##
+_ASEOF
+test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# Save the log message, to keep $0 and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.
+ac_log="
+This file was extended by GNU grep $as_me 3.7, which was
+generated by GNU Autoconf 2.71.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+on `(hostname || uname -n) 2>/dev/null | sed 1q`
+"
+
+_ACEOF
+
+case $ac_config_files in *"
+"*) set x $ac_config_files; shift; ac_config_files=$*;;
+esac
+
+case $ac_config_headers in *"
+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;
+esac
+
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+# Files that config.status was made for.
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
+config_links="$ac_config_links"
+config_commands="$ac_config_commands"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ac_cs_usage="\
+\`$as_me' instantiates files and other configuration actions
+from templates according to the current configuration.  Unless the files
+and actions are specified as TAGs, all are instantiated by default.
+
+Usage: $0 [OPTION]... [TAG]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number and configuration settings, then exit
+      --config     print configuration, then exit
+  -q, --quiet, --silent
+                   do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+      --file=FILE[:TEMPLATE]
+                   instantiate the configuration file FILE
+      --header=FILE[:TEMPLATE]
+                   instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Configuration links:
+$config_links
+
+Configuration commands:
+$config_commands
+
+Report bugs to <bug-grep@gnu.org>.
+GNU grep home page: <https://www.gnu.org/software/grep/>.
+General help using GNU software: <https://www.gnu.org/gethelp/>."
+
+_ACEOF
+ac_cs_config=`printf "%s\n" "$ac_configure_args" | sed "$ac_safe_unquote"`
+ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\''/g"`
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_config='$ac_cs_config_escaped'
+ac_cs_version="\\
+GNU grep config.status 3.7
+configured by $0, generated by GNU Autoconf 2.71,
+  with options \\"\$ac_cs_config\\"
+
+Copyright (C) 2021 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+
+ac_pwd='$ac_pwd'
+srcdir='$srcdir'
+INSTALL='$INSTALL'
+MKDIR_P='$MKDIR_P'
+AWK='$AWK'
+test -n "\$AWK" || AWK=awk
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# The default lists apply if the user does not specify any file.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=?*)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  --*=)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=
+    ac_shift=:
+    ;;
+  *)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
+    printf "%s\n" "$ac_cs_version"; exit ;;
+  --config | --confi | --conf | --con | --co | --c )
+    printf "%s\n" "$ac_cs_config"; exit ;;
+  --debug | --debu | --deb | --de | --d | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`printf "%s\n" "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    '') as_fn_error $? "missing file argument" ;;
+    esac
+    as_fn_append CONFIG_FILES " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`printf "%s\n" "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    as_fn_append CONFIG_HEADERS " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --he | --h)
+    # Conflict between --help and --header
+    as_fn_error $? "ambiguous option: \`$1'
+Try \`$0 --help' for more information.";;
+  --help | --hel | -h )
+    printf "%s\n" "$ac_cs_usage"; exit ;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) as_fn_error $? "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
+
+  *) as_fn_append ac_config_targets " $1"
+     ac_need_defaults=false ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+if \$ac_cs_recheck; then
+  set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  shift
+  \printf "%s\n" "running CONFIG_SHELL=$SHELL \$*" >&6
+  CONFIG_SHELL='$SHELL'
+  export CONFIG_SHELL
+  exec "\$@"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+  printf "%s\n" "$ac_log"
+} >&5
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+#
+# INIT-COMMANDS
+#
+AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"
+GNUmakefile=$GNUmakefile
+# Capture the value of obsolete ALL_LINGUAS because we need it to compute
+    # POFILES, UPDATEPOFILES, DUMMYPOFILES, GMOFILES, CATALOGS. But hide it
+    # from automake < 1.5.
+    eval 'OBSOLETE_ALL_LINGUAS''="$ALL_LINGUAS"'
+    # Capture the value of LINGUAS because we need it to compute CATALOGS.
+    LINGUAS="${LINGUAS-%UNSET%}"
+
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+
+# Handling of arguments.
+for ac_config_target in $ac_config_targets
+do
+  case $ac_config_target in
+    "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h:config.hin" ;;
+    "depfiles") CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
+    "$GNUmakefile") CONFIG_LINKS="$CONFIG_LINKS $GNUmakefile:$GNUmakefile" ;;
+    "po-directories") CONFIG_COMMANDS="$CONFIG_COMMANDS po-directories" ;;
+    "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+    "lib/Makefile") CONFIG_FILES="$CONFIG_FILES lib/Makefile" ;;
+    "src/Makefile") CONFIG_FILES="$CONFIG_FILES src/Makefile" ;;
+    "tests/Makefile") CONFIG_FILES="$CONFIG_FILES tests/Makefile" ;;
+    "po/Makefile.in") CONFIG_FILES="$CONFIG_FILES po/Makefile.in" ;;
+    "doc/Makefile") CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
+    "gnulib-tests/Makefile") CONFIG_FILES="$CONFIG_FILES gnulib-tests/Makefile" ;;
+
+  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+  esac
+done
+
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test ${CONFIG_FILES+y} || CONFIG_FILES=$config_files
+  test ${CONFIG_HEADERS+y} || CONFIG_HEADERS=$config_headers
+  test ${CONFIG_LINKS+y} || CONFIG_LINKS=$config_links
+  test ${CONFIG_COMMANDS+y} || CONFIG_COMMANDS=$config_commands
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason against having it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Hook for its removal unless debugging.
+# Note that there is a small window in which the directory will not be cleaned:
+# after its creation but before its name has been assigned to `$tmp'.
+$debug ||
+{
+  tmp= ac_tmp=
+  trap 'exit_status=$?
+  : "${ac_tmp:=$tmp}"
+  { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status
+' 0
+  trap 'as_fn_exit 1' 1 2 13 15
+}
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
+  test -d "$tmp"
+}  ||
+{
+  tmp=./conf$$-$RANDOM
+  (umask 077 && mkdir "$tmp")
+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5
+ac_tmp=$tmp
+
+# Set up the scripts for CONFIG_FILES section.
+# No need to generate them if there are no CONFIG_FILES.
+# This happens for instance with `./config.status config.h'.
+if test -n "$CONFIG_FILES"; then
+
+
+ac_cr=`echo X | tr X '\015'`
+# On cygwin, bash can eat \r inside `` if the user requested igncr.
+# But we know of no other shell where ac_cr would be empty at this
+# point, so we can use a bashism as a fallback.
+if test "x$ac_cr" = x; then
+  eval ac_cr=\$\'\\r\'
+fi
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
+if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
+  ac_cs_awk_cr='\\r'
+else
+  ac_cs_awk_cr=$ac_cr
+fi
+
+echo 'BEGIN {' >"$ac_tmp/subs1.awk" &&
+_ACEOF
+
+
+{
+  echo "cat >conf$$subs.awk <<_ACEOF" &&
+  echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
+  echo "_ACEOF"
+} >conf$$subs.sh ||
+  as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '^'`
+ac_delim='%!_!# '
+for ac_last_try in false false false false false :; do
+  . ./conf$$subs.sh ||
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+
+  ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+  if test $ac_delim_n = $ac_delim_num; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+rm -f conf$$subs.sh
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"\$ac_tmp/subs1.awk" <<\\_ACAWK &&
+_ACEOF
+sed -n '
+h
+s/^/S["/; s/!.*/"]=/
+p
+g
+s/^[^!]*!//
+:repl
+t repl
+s/'"$ac_delim"'$//
+t delim
+:nl
+h
+s/\(.\{148\}\)..*/\1/
+t more1
+s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/
+p
+n
+b repl
+:more1
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t nl
+:delim
+h
+s/\(.\{148\}\)..*/\1/
+t more2
+s/["\\]/\\&/g; s/^/"/; s/$/"/
+p
+b
+:more2
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t delim
+' <conf$$subs.awk | sed '
+/^[^""]/{
+  N
+  s/\n//
+}
+' >>$CONFIG_STATUS || ac_write_fail=1
+rm -f conf$$subs.awk
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACAWK
+cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
+  for (key in S) S_is_set[key] = 1
+  FS = ""
+
+}
+{
+  line = $ 0
+  nfields = split(line, field, "@")
+  substed = 0
+  len = length(field[1])
+  for (i = 2; i < nfields; i++) {
+    key = field[i]
+    keylen = length(key)
+    if (S_is_set[key]) {
+      value = S[key]
+      line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
+      len += length(value) + length(field[++i])
+      substed = 1
+    } else
+      len += 1 + keylen
+  }
+
+  print line
+}
+
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
+  sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
+else
+  cat
+fi < "$ac_tmp/subs1.awk" > "$ac_tmp/subs.awk" \
+  || as_fn_error $? "could not setup config files machinery" "$LINENO" 5
+_ACEOF
+
+# VPATH may cause trouble with some makes, so we remove sole $(srcdir),
+# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=[	 ]*/{
+h
+s///
+s/^/:/
+s/[	 ]*$/:/
+s/:\$(srcdir):/:/g
+s/:\${srcdir}:/:/g
+s/:@srcdir@:/:/g
+s/^:*//
+s/:*$//
+x
+s/\(=[	 ]*\).*/\1/
+G
+s/\n//
+s/^[^=]*=[	 ]*$//
+}'
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+fi # test -n "$CONFIG_FILES"
+
+# Set up the scripts for CONFIG_HEADERS section.
+# No need to generate them if there are no CONFIG_HEADERS.
+# This happens for instance with `./config.status Makefile'.
+if test -n "$CONFIG_HEADERS"; then
+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||
+BEGIN {
+_ACEOF
+
+# Transform confdefs.h into an awk script `defines.awk', embedded as
+# here-document in config.status, that substitutes the proper values into
+# config.h.in to produce config.h.
+
+# Create a delimiter string that does not exist in confdefs.h, to ease
+# handling of long lines.
+ac_delim='%!_!# '
+for ac_last_try in false false :; do
+  ac_tt=`sed -n "/$ac_delim/p" confdefs.h`
+  if test -z "$ac_tt"; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+
+# For the awk script, D is an array of macro values keyed by name,
+# likewise P contains macro parameters if any.  Preserve backslash
+# newline sequences.
+
+ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
+sed -n '
+s/.\{148\}/&'"$ac_delim"'/g
+t rset
+:rset
+s/^[	 ]*#[	 ]*define[	 ][	 ]*/ /
+t def
+d
+:def
+s/\\$//
+t bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3"/p
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2"/p
+d
+:bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3\\\\\\n"\\/p
+t cont
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p
+t cont
+d
+:cont
+n
+s/.\{148\}/&'"$ac_delim"'/g
+t clear
+:clear
+s/\\$//
+t bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/"/p
+d
+:bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
+b cont
+' <confdefs.h | sed '
+s/'"$ac_delim"'/"\\\
+"/g' >>$CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  for (key in D) D_is_set[key] = 1
+  FS = ""
+}
+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {
+  line = \$ 0
+  split(line, arg, " ")
+  if (arg[1] == "#") {
+    defundef = arg[2]
+    mac1 = arg[3]
+  } else {
+    defundef = substr(arg[1], 2)
+    mac1 = arg[2]
+  }
+  split(mac1, mac2, "(") #)
+  macro = mac2[1]
+  prefix = substr(line, 1, index(line, defundef) - 1)
+  if (D_is_set[macro]) {
+    # Preserve the white space surrounding the "#".
+    print prefix "define", macro P[macro] D[macro]
+    next
+  } else {
+    # Replace #undef with comments.  This is necessary, for example,
+    # in the case of _POSIX_SOURCE, which is predefined and required
+    # on some systems where configure will not decide to define it.
+    if (defundef == "undef") {
+      print "/*", prefix defundef, macro, "*/"
+      next
+    }
+  }
+}
+{ print }
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+  as_fn_error $? "could not setup config headers machinery" "$LINENO" 5
+fi # test -n "$CONFIG_HEADERS"
+
+
+eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS  :L $CONFIG_LINKS  :C $CONFIG_COMMANDS"
+shift
+for ac_tag
+do
+  case $ac_tag in
+  :[FHLC]) ac_mode=$ac_tag; continue;;
+  esac
+  case $ac_mode$ac_tag in
+  :[FHL]*:*);;
+  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;
+  :[FH]-) ac_tag=-:-;;
+  :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
+  esac
+  ac_save_IFS=$IFS
+  IFS=:
+  set x $ac_tag
+  IFS=$ac_save_IFS
+  shift
+  ac_file=$1
+  shift
+
+  case $ac_mode in
+  :L) ac_source=$1;;
+  :[FH])
+    ac_file_inputs=
+    for ac_f
+    do
+      case $ac_f in
+      -) ac_f="$ac_tmp/stdin";;
+      *) # Look for the file first in the build tree, then in the source tree
+	 # (if the path is not absolute).  The absolute path cannot be DOS-style,
+	 # because $ac_f cannot contain `:'.
+	 test -f "$ac_f" ||
+	   case $ac_f in
+	   [\\/$]*) false;;
+	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
+	   esac ||
+	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+      esac
+      case $ac_f in *\'*) ac_f=`printf "%s\n" "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+      as_fn_append ac_file_inputs " '$ac_f'"
+    done
+
+    # Let's still pretend it is `configure' which instantiates (i.e., don't
+    # use $as_me), people would be surprised to read:
+    #    /* config.h.  Generated by config.status.  */
+    configure_input='Generated from '`
+	  printf "%s\n" "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+	`' by configure.'
+    if test x"$ac_file" != x-; then
+      configure_input="$ac_file.  $configure_input"
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+printf "%s\n" "$as_me: creating $ac_file" >&6;}
+    fi
+    # Neutralize special characters interpreted by sed in replacement strings.
+    case $configure_input in #(
+    *\&* | *\|* | *\\* )
+       ac_sed_conf_input=`printf "%s\n" "$configure_input" |
+       sed 's/[\\\\&|]/\\\\&/g'`;; #(
+    *) ac_sed_conf_input=$configure_input;;
+    esac
+
+    case $ac_tag in
+    *:-:* | *:-) cat >"$ac_tmp/stdin" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;
+    esac
+    ;;
+  esac
+
+  ac_dir=`$as_dirname -- "$ac_file" ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  as_dir="$ac_dir"; as_fn_mkdir_p
+  ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`printf "%s\n" "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`printf "%s\n" "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+
+  case $ac_mode in
+  :F)
+  #
+  # CONFIG_FILE
+  #
+
+  case $INSTALL in
+  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+  *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;;
+  esac
+  ac_MKDIR_P=$MKDIR_P
+  case $MKDIR_P in
+  [\\/$]* | ?:[\\/]* ) ;;
+  */*) ac_MKDIR_P=$ac_top_build_prefix$MKDIR_P ;;
+  esac
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# If the template does not know about datarootdir, expand it.
+# FIXME: This hack should be removed a few years after 2.60.
+ac_datarootdir_hack=; ac_datarootdir_seen=
+ac_sed_dataroot='
+/datarootdir/ {
+  p
+  q
+}
+/@datadir@/p
+/@docdir@/p
+/@infodir@/p
+/@localedir@/p
+/@mandir@/p'
+case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
+*datarootdir*) ac_datarootdir_seen=yes;;
+*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+printf "%s\n" "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  ac_datarootdir_hack='
+  s&@datadir@&$datadir&g
+  s&@docdir@&$docdir&g
+  s&@infodir@&$infodir&g
+  s&@localedir@&$localedir&g
+  s&@mandir@&$mandir&g
+  s&\\\${datarootdir}&$datarootdir&g' ;;
+esac
+_ACEOF
+
+# Neutralize VPATH when `$srcdir' = `.'.
+# Shell code in configure.ac might set extrasub.
+# FIXME: do we really want to maintain this feature?
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_sed_extra="$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s|@configure_input@|$ac_sed_conf_input|;t t
+s&@top_builddir@&$ac_top_builddir_sub&;t t
+s&@top_build_prefix@&$ac_top_build_prefix&;t t
+s&@srcdir@&$ac_srcdir&;t t
+s&@abs_srcdir@&$ac_abs_srcdir&;t t
+s&@top_srcdir@&$ac_top_srcdir&;t t
+s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
+s&@builddir@&$ac_builddir&;t t
+s&@abs_builddir@&$ac_abs_builddir&;t t
+s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+s&@INSTALL@&$ac_INSTALL&;t t
+s&@MKDIR_P@&$ac_MKDIR_P&;t t
+$ac_datarootdir_hack
+"
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \
+  >$ac_tmp/out || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+
+test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
+  { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } &&
+  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' \
+      "$ac_tmp/out"`; test -z "$ac_out"; } &&
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&5
+printf "%s\n" "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&2;}
+
+  rm -f "$ac_tmp/stdin"
+  case $ac_file in
+  -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";;
+  *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";;
+  esac \
+  || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+ ;;
+  :H)
+  #
+  # CONFIG_HEADER
+  #
+  if test x"$ac_file" != x-; then
+    {
+      printf "%s\n" "/* $configure_input  */" >&1 \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"
+    } >"$ac_tmp/config.h" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+printf "%s\n" "$as_me: $ac_file is unchanged" >&6;}
+    else
+      rm -f "$ac_file"
+      mv "$ac_tmp/config.h" "$ac_file" \
+	|| as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    fi
+  else
+    printf "%s\n" "/* $configure_input  */" >&1 \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
+      || as_fn_error $? "could not create -" "$LINENO" 5
+  fi
+# Compute "$ac_file"'s index in $config_headers.
+_am_arg="$ac_file"
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+  case $_am_header in
+    $_am_arg | $_am_arg:* )
+      break ;;
+    * )
+      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+  esac
+done
+echo "timestamp for $_am_arg" >`$as_dirname -- "$_am_arg" ||
+$as_expr X"$_am_arg" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$_am_arg" : 'X\(//\)[^/]' \| \
+	 X"$_am_arg" : 'X\(//\)$' \| \
+	 X"$_am_arg" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X"$_am_arg" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`/stamp-h$_am_stamp_count
+ ;;
+  :L)
+  #
+  # CONFIG_LINK
+  #
+
+  if test "$ac_source" = "$ac_file" && test "$srcdir" = '.'; then
+    :
+  else
+    # Prefer the file from the source tree if names are identical.
+    if test "$ac_source" = "$ac_file" || test ! -r "$ac_source"; then
+      ac_source=$srcdir/$ac_source
+    fi
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: linking $ac_source to $ac_file" >&5
+printf "%s\n" "$as_me: linking $ac_source to $ac_file" >&6;}
+
+    if test ! -r "$ac_source"; then
+      as_fn_error $? "$ac_source: file not found" "$LINENO" 5
+    fi
+    rm -f "$ac_file"
+
+    # Try a relative symlink, then a hard link, then a copy.
+    case $ac_source in
+    [\\/$]* | ?:[\\/]* ) ac_rel_source=$ac_source ;;
+	*) ac_rel_source=$ac_top_build_prefix$ac_source ;;
+    esac
+    ln -s "$ac_rel_source" "$ac_file" 2>/dev/null ||
+      ln "$ac_source" "$ac_file" 2>/dev/null ||
+      cp -p "$ac_source" "$ac_file" ||
+      as_fn_error $? "cannot link or copy $ac_source to $ac_file" "$LINENO" 5
+  fi
+ ;;
+  :C)  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5
+printf "%s\n" "$as_me: executing $ac_file commands" >&6;}
+ ;;
+  esac
+
+
+  case $ac_file$ac_mode in
+    "depfiles":C) test x"$AMDEP_TRUE" != x"" || {
+  # Older Autoconf quotes --file arguments for eval, but not when files
+  # are listed without --file.  Let's play safe and only enable the eval
+  # if we detect the quoting.
+  # TODO: see whether this extra hack can be removed once we start
+  # requiring Autoconf 2.70 or later.
+  case $CONFIG_FILES in #(
+  *\'*) :
+    eval set x "$CONFIG_FILES" ;; #(
+  *) :
+    set x $CONFIG_FILES ;; #(
+  *) :
+     ;;
+esac
+  shift
+  # Used to flag and report bootstrapping failures.
+  am_rc=0
+  for am_mf
+  do
+    # Strip MF so we end up with the name of the file.
+    am_mf=`printf "%s\n" "$am_mf" | sed -e 's/:.*$//'`
+    # Check whether this is an Automake generated Makefile which includes
+    # dependency-tracking related rules and includes.
+    # Grep'ing the whole file directly is not great: AIX grep has a line
+    # limit of 2048, but all sed's we know have understand at least 4000.
+    sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
+      || continue
+    am_dirpart=`$as_dirname -- "$am_mf" ||
+$as_expr X"$am_mf" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$am_mf" : 'X\(//\)[^/]' \| \
+	 X"$am_mf" : 'X\(//\)$' \| \
+	 X"$am_mf" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X"$am_mf" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+    am_filepart=`$as_basename -- "$am_mf" ||
+$as_expr X/"$am_mf" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$am_mf" : 'X\(//\)$' \| \
+	 X"$am_mf" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X/"$am_mf" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+    { echo "$as_me:$LINENO: cd "$am_dirpart" \
+      && sed -e '/# am--include-marker/d' "$am_filepart" \
+        | $MAKE -f - am--depfiles" >&5
+   (cd "$am_dirpart" \
+      && sed -e '/# am--include-marker/d' "$am_filepart" \
+        | $MAKE -f - am--depfiles) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); } || am_rc=$?
+  done
+  if test $am_rc -ne 0; then
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "Something went wrong bootstrapping makefile fragments
+    for automatic dependency tracking.  If GNU make was not used, consider
+    re-running the configure script with MAKE=\"gmake\" (or whatever is
+    necessary).  You can also try re-running configure with the
+    '--disable-dependency-tracking' option to at least be able to build
+    the package (albeit without support for automatic dependency tracking).
+See \`config.log' for more details" "$LINENO" 5; }
+  fi
+  { am_dirpart=; unset am_dirpart;}
+  { am_filepart=; unset am_filepart;}
+  { am_mf=; unset am_mf;}
+  { am_rc=; unset am_rc;}
+  rm -f conftest-deps.mk
+}
+ ;;
+    "po-directories":C)
+    for ac_file in $CONFIG_FILES; do
+      # Support "outfile[:infile[:infile...]]"
+      case "$ac_file" in
+        *:*) ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+      esac
+      # PO directories have a Makefile.in generated from Makefile.in.in.
+      case "$ac_file" in */Makefile.in)
+        # Adjust a relative srcdir.
+        ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'`
+        ac_dir_suffix=/`echo "$ac_dir"|sed 's%^\./%%'`
+        ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'`
+        # In autoconf-2.13 it is called $ac_given_srcdir.
+        # In autoconf-2.50 it is called $srcdir.
+        test -n "$ac_given_srcdir" || ac_given_srcdir="$srcdir"
+        case "$ac_given_srcdir" in
+          .)  top_srcdir=`echo $ac_dots|sed 's%/$%%'` ;;
+          /*) top_srcdir="$ac_given_srcdir" ;;
+          *)  top_srcdir="$ac_dots$ac_given_srcdir" ;;
+        esac
+        # Treat a directory as a PO directory if and only if it has a
+        # POTFILES.in file. This allows packages to have multiple PO
+        # directories under different names or in different locations.
+        if test -f "$ac_given_srcdir/$ac_dir/POTFILES.in"; then
+          rm -f "$ac_dir/POTFILES"
+          test -n "$as_me" && echo "$as_me: creating $ac_dir/POTFILES" || echo "creating $ac_dir/POTFILES"
+          gt_tab=`printf '\t'`
+          cat "$ac_given_srcdir/$ac_dir/POTFILES.in" | sed -e "/^#/d" -e "/^[ ${gt_tab}]*\$/d" -e "s,.*,     $top_srcdir/& \\\\," | sed -e "\$s/\(.*\) \\\\/\1/" > "$ac_dir/POTFILES"
+          POMAKEFILEDEPS="POTFILES.in"
+          # ALL_LINGUAS, POFILES, UPDATEPOFILES, DUMMYPOFILES, GMOFILES depend
+          # on $ac_dir but don't depend on user-specified configuration
+          # parameters.
+          if test -f "$ac_given_srcdir/$ac_dir/LINGUAS"; then
+            # The LINGUAS file contains the set of available languages.
+            if test -n "$OBSOLETE_ALL_LINGUAS"; then
+              test -n "$as_me" && echo "$as_me: setting ALL_LINGUAS in configure.in is obsolete" || echo "setting ALL_LINGUAS in configure.in is obsolete"
+            fi
+            ALL_LINGUAS_=`sed -e "/^#/d" -e "s/#.*//" "$ac_given_srcdir/$ac_dir/LINGUAS"`
+            # Hide the ALL_LINGUAS assignment from automake < 1.5.
+            eval 'ALL_LINGUAS''=$ALL_LINGUAS_'
+            POMAKEFILEDEPS="$POMAKEFILEDEPS LINGUAS"
+          else
+            # The set of available languages was given in configure.in.
+            # Hide the ALL_LINGUAS assignment from automake < 1.5.
+            eval 'ALL_LINGUAS''=$OBSOLETE_ALL_LINGUAS'
+          fi
+          # Compute POFILES
+          # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).po)
+          # Compute UPDATEPOFILES
+          # as      $(foreach lang, $(ALL_LINGUAS), $(lang).po-update)
+          # Compute DUMMYPOFILES
+          # as      $(foreach lang, $(ALL_LINGUAS), $(lang).nop)
+          # Compute GMOFILES
+          # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).gmo)
+          case "$ac_given_srcdir" in
+            .) srcdirpre= ;;
+            *) srcdirpre='$(srcdir)/' ;;
+          esac
+          POFILES=
+          UPDATEPOFILES=
+          DUMMYPOFILES=
+          GMOFILES=
+          for lang in $ALL_LINGUAS; do
+            POFILES="$POFILES $srcdirpre$lang.po"
+            UPDATEPOFILES="$UPDATEPOFILES $lang.po-update"
+            DUMMYPOFILES="$DUMMYPOFILES $lang.nop"
+            GMOFILES="$GMOFILES $srcdirpre$lang.gmo"
+          done
+          # CATALOGS depends on both $ac_dir and the user's LINGUAS
+          # environment variable.
+          INST_LINGUAS=
+          if test -n "$ALL_LINGUAS"; then
+            for presentlang in $ALL_LINGUAS; do
+              useit=no
+              if test "%UNSET%" != "$LINGUAS"; then
+                desiredlanguages="$LINGUAS"
+              else
+                desiredlanguages="$ALL_LINGUAS"
+              fi
+              for desiredlang in $desiredlanguages; do
+                # Use the presentlang catalog if desiredlang is
+                #   a. equal to presentlang, or
+                #   b. a variant of presentlang (because in this case,
+                #      presentlang can be used as a fallback for messages
+                #      which are not translated in the desiredlang catalog).
+                case "$desiredlang" in
+                  "$presentlang"*) useit=yes;;
+                esac
+              done
+              if test $useit = yes; then
+                INST_LINGUAS="$INST_LINGUAS $presentlang"
+              fi
+            done
+          fi
+          CATALOGS=
+          if test -n "$INST_LINGUAS"; then
+            for lang in $INST_LINGUAS; do
+              CATALOGS="$CATALOGS $lang.gmo"
+            done
+          fi
+          test -n "$as_me" && echo "$as_me: creating $ac_dir/Makefile" || echo "creating $ac_dir/Makefile"
+          sed -e "/^POTFILES =/r $ac_dir/POTFILES" -e "/^# Makevars/r $ac_given_srcdir/$ac_dir/Makevars" -e "s|@POFILES@|$POFILES|g" -e "s|@UPDATEPOFILES@|$UPDATEPOFILES|g" -e "s|@DUMMYPOFILES@|$DUMMYPOFILES|g" -e "s|@GMOFILES@|$GMOFILES|g" -e "s|@CATALOGS@|$CATALOGS|g" -e "s|@POMAKEFILEDEPS@|$POMAKEFILEDEPS|g" "$ac_dir/Makefile.in" > "$ac_dir/Makefile"
+          for f in "$ac_given_srcdir/$ac_dir"/Rules-*; do
+            if test -f "$f"; then
+              case "$f" in
+                *.orig | *.bak | *~) ;;
+                *) cat "$f" >> "$ac_dir/Makefile" ;;
+              esac
+            fi
+          done
+        fi
+        ;;
+      esac
+    done ;;
+
+  esac
+done # for ac_tag
+
+
+as_fn_exit 0
+_ACEOF
+ac_clean_files=$ac_clean_files_save
+
+test $ac_write_fail = 0 ||
+  as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || as_fn_exit 1
+fi
+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+printf "%s\n" "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+fi
+
+
diff --git a/src/grep/configure.ac b/src/grep/configure.ac
new file mode 100644
index 0000000..c49ec4a
--- /dev/null
+++ b/src/grep/configure.ac
@@ -0,0 +1,219 @@
+dnl
+dnl autoconf input file for GNU grep
+dnl
+dnl Copyright (C) 1997-2006, 2009-2021 Free Software Foundation, Inc.
+dnl
+dnl This file is part of GNU grep.
+dnl
+dnl This program is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 3, or (at your option)
+dnl any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+dnl GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+AC_INIT([GNU grep],
+        m4_esyscmd([build-aux/git-version-gen .tarball-version]),
+        [bug-grep@gnu.org])
+
+if test -n "$GREP" || test -n "$EGREP"; then
+  AC_MSG_ERROR(
+    [no working 'grep' found
+  A working 'grep' command is needed to build GNU Grep.
+  This 'grep' should support -e and long lines.
+  On Solaris 10, install the package SUNWggrp or SUNWxcu4.
+  On Solaris 11, install the package text/gnu-grep or system/xopen/xcu4.])
+fi
+
+AC_CONFIG_AUX_DIR([build-aux])
+AC_CONFIG_SRCDIR([src/grep.c])
+AC_DEFINE([GREP], 1, [We are building grep])
+AC_PREREQ([2.64])
+AC_CONFIG_MACRO_DIRS([m4])
+
+dnl Automake stuff.
+AM_INIT_AUTOMAKE([1.11 dist-xz color-tests parallel-tests
+                  subdir-objects])
+AM_SILENT_RULES([yes]) # make --enable-silent-rules the default.
+
+AC_CONFIG_HEADERS([config.h:config.hin])
+
+dnl Checks for programs.
+AC_CANONICAL_HOST
+AC_PROG_AWK
+AC_PROG_INSTALL
+AC_PROG_CC
+gl_EARLY
+AC_PROG_RANLIB
+PKG_PROG_PKG_CONFIG([0.9.0])
+
+# grep never invokes mbrtowc or mbrlen on empty input,
+# so don't worry about this common bug,
+# as working around it would merely slow grep down.
+gl_cv_func_mbrtowc_empty_input='assume yes'
+
+dnl Checks for typedefs, structures, and compiler characteristics.
+AC_TYPE_SIZE_T
+AC_C_CONST
+gl_INIT
+
+# Ensure VLAs are not used.
+# Note -Wvla is implicitly added by gl_MANYWARN_ALL_GCC
+AC_DEFINE([GNULIB_NO_VLA], [1], [Define to 1 to disable use of VLAs])
+
+# The test suite needs to know if we have a working perl.
+# FIXME: this is suboptimal.  Ideally, we would be able to call gl_PERL
+# with an ACTION-IF-NOT-FOUND argument ...
+cu_have_perl=yes
+case $PERL in *"/missing "*) cu_have_perl=no;; esac
+AM_CONDITIONAL([HAVE_PERL], [test $cu_have_perl = yes])
+
+AC_ARG_ENABLE([gcc-warnings],
+  [AS_HELP_STRING([--enable-gcc-warnings],
+                  [turn on lots of GCC warnings (for developers)])],
+  [case $enableval in
+     yes|no) ;;
+     *)      AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
+   esac
+   gl_gcc_warnings=$enableval],
+  [gl_gcc_warnings=no
+   if test "$GCC" = yes && test -d "$srcdir"/.git; then
+     AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM([[
+          #if ! (6 < __GNUC__ + (2 <= __GNUC_MINOR__))
+            #error "--enable-gcc-warnings defaults to 'no' on older GCC"
+          #endif
+          ]])],
+       [gl_gcc_warnings=yes])
+   fi]
+)
+
+if test "$gl_gcc_warnings" = yes; then
+  gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
+  AC_SUBST([WERROR_CFLAGS])
+
+  nw=
+  # This, $nw, is the list of warnings we disable.
+  nw="$nw -Wdeclaration-after-statement" # too useful to forbid
+  nw="$nw -Waggregate-return"       # anachronistic
+  nw="$nw -Wlong-long"              # C90 is anachronistic (lib/gethrxtime.h)
+  nw="$nw -Wc++-compat"             # We don't care about C++ compilers
+  nw="$nw -Wundef"                  # Warns on '#if GNULIB_FOO' etc in gnulib
+  nw="$nw -Wsystem-headers"         # Don't let system headers trigger warnings
+  nw="$nw -Wpadded"                 # Our structs are not padded
+  nw="$nw -Wstack-protector"        # generates false alarms for useful code
+  nw="$nw -Wswitch-default"         # Too many warnings for now
+  nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
+  nw="$nw -Winline"                 # streq.h's streq4, streq6 and strcaseeq6
+  nw="$nw -Wstrict-overflow"        # regexec.c
+
+  gl_MANYWARN_ALL_GCC([ws])
+  gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
+  for w in $ws; do
+    gl_WARN_ADD([$w])
+  done
+  gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
+  gl_WARN_ADD([-Wno-sign-compare])     # Too many warnings for now
+  gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
+  gl_WARN_ADD([-Wno-cast-function-type]) # sig-handler.h's sa_handler_t cast
+
+  # In spite of excluding -Wlogical-op above, it is enabled, as of
+  # gcc 4.5.0 20090517, and it provokes warnings in cat.c, dd.c, truncate.c
+  gl_WARN_ADD([-Wno-logical-op])
+
+  AC_SUBST([WARN_CFLAGS])
+
+  AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
+  AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
+  AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
+  [/* Enable compile-time and run-time bounds-checking, and some warnings,
+      without upsetting glibc 2.15+. */
+   #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
+        && defined __OPTIMIZE__ && __OPTIMIZE__)
+   # define _FORTIFY_SOURCE 2
+   #endif
+  ])
+
+  # We use a slightly smaller set of warning options for lib/.
+  # Remove the following and save the result in GNULIB_WARN_CFLAGS.
+  nw=
+  nw="$nw -Wunused-macros"
+  gl_WARN_ADD([-Wno-format-nonliteral])
+  gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
+  AC_SUBST([GNULIB_WARN_CFLAGS])
+
+  # For gnulib-tests, the set is slightly smaller still.
+  nw=
+  nw="$nw -Wstrict-prototypes"
+  # It's not worth being this picky about test programs.
+  nw="$nw -Wsuggest-attribute=const"
+  nw="$nw -Wsuggest-attribute=pure"
+  nw="$nw -Wsuggest-attribute=format"
+  nw="$nw -Wformat-truncation=2"    # False alarm in strerror_r.c
+  nw="$nw -Wold-style-definition"
+
+  # Disable to avoid warnings in e.g., test-intprops.c and test-limits-h.c
+  # due to overlong expansions like this:
+  # test-intprops.c:147:5: error: string literal of length 9531 exceeds \
+  # maximum length 4095 that ISO C99 compilers are required to support
+  nw="$nw -Woverlength-strings"
+
+  gl_MANYWARN_COMPLEMENT([GNULIB_TEST_WARN_CFLAGS],
+                         [$GNULIB_WARN_CFLAGS], [$nw])
+  gl_WARN_ADD([-Wno-return-type], [GNULIB_TEST_WARN_CFLAGS])
+  AC_SUBST([GNULIB_TEST_WARN_CFLAGS])
+fi
+
+# By default, argmatch should fail calling usage (EXIT_FAILURE).
+AC_DEFINE([ARGMATCH_DIE], [usage (EXIT_FAILURE)],
+          [Define to the function xargmatch calls on failures.])
+AC_DEFINE([ARGMATCH_DIE_DECL], [void usage (int _e)],
+          [Define to the declaration of the xargmatch failure function.])
+
+dnl Checks for header files.
+AC_HEADER_DIRENT
+
+dnl Checks for functions.
+AC_FUNC_CLOSEDIR_VOID
+
+AC_CHECK_FUNCS_ONCE([isascii setlocale])
+
+dnl I18N feature
+AM_GNU_GETTEXT_VERSION([0.18.2])
+AM_GNU_GETTEXT([external])
+
+dnl Some installers want to be informed if we do not use our regex.
+dnl For example, if the host platform uses dynamic linking and the installer
+dnl knows that the grep may be invoked on other hosts with buggy libraries,
+dnl then the installer should configure --with-included-regex.
+AM_CONDITIONAL([USE_INCLUDED_REGEX], [test "$ac_use_included_regex" = yes])
+if test "$ac_use_included_regex" = no; then
+  AC_MSG_WARN([Included lib/regex.c not used])
+fi
+
+gl_FUNC_PCRE
+AM_CONDITIONAL([USE_PCRE], [test $use_pcre = yes])
+
+case $host_os in
+  mingw*) suffix=w32 ;;
+  *) suffix=posix ;;
+esac
+COLORIZE_SOURCE=colorize-$suffix.c
+AC_SUBST([COLORIZE_SOURCE])
+
+AC_CONFIG_FILES([
+  Makefile
+  lib/Makefile
+  src/Makefile
+  tests/Makefile
+  po/Makefile.in
+  doc/Makefile
+  gnulib-tests/Makefile
+])
+AC_OUTPUT
diff --git a/src/grep/dist-check.mk b/src/grep/dist-check.mk
new file mode 100644
index 0000000..f23339e
--- /dev/null
+++ b/src/grep/dist-check.mk
@@ -0,0 +1,198 @@
+# Most of this is probably too coreutils-centric to be useful to other packages.
+
+bin=bin-$$$$
+
+write_loser = printf '\#!%s\necho $$0: bad path 1>&2; exit 1\n' '$(SHELL)'
+
+tmpdir = $(abs_top_builddir)/tests/torture
+
+t=$(tmpdir)/$(PACKAGE)/test
+pfx=$(t)/i
+
+built_programs =						\
+  $$(echo 'spy:;@echo $$(bin_PROGRAMS)'				\
+    | MAKEFLAGS= $(MAKE) -s -f Makefile -f - spy		\
+    | fmt -1 | sed 's,$(EXEEXT)$$,,' | sort -u)
+
+# More than once, tainted build and source directory names would
+# have caused at least one "make check" test to apply "chmod 700"
+# to all directories under $HOME.  Make sure it doesn't happen again.
+tp = $(tmpdir)/taint
+t_prefix = $(tp)/a
+t_taint = '$(t_prefix) b'
+fake_home = $(tp)/home
+
+# When extracting from a distribution tarball, extract using the fastest
+# method possible.  With dist-xz, that means using the *.xz file.
+ifneq ('', $(filter *.xz, $(DIST_ARCHIVES)))
+  tar_decompress_opt_ = J
+  suffix_ = xz
+else
+  ifneq ('', $(filter *.gz, $(DIST_ARCHIVES)))
+    tar_decompress_opt_ = z
+    suffix_ = gz
+  else
+    tar_decompress_opt_ = j
+    suffix_ = bz2
+  endif
+endif
+amtar_extract_ = $(AMTAR) -$(tar_decompress_opt_)xf
+preferred_tarball_ = $(distdir).tar.$(suffix_)
+
+# Ensure that tests run from tainted build and src dir names work,
+# and don't affect anything in $HOME.  Create witness files in $HOME,
+# record their attributes, and build/test.  Then ensure that the
+# witnesses were not affected.
+# Skip this test when using libtool, since libtool-generated scripts
+# cannot deal with a space-tainted srcdir.
+ALL_RECURSIVE_TARGETS += taint-distcheck
+taint-distcheck: $(DIST_ARCHIVES)
+	grep '^[	 ]*LT_INIT' configure.ac >/dev/null && exit 0 || :
+	test -d $(t_taint) && chmod -R 700 $(t_taint) || :
+	-rm -rf $(t_taint) $(fake_home)
+	mkdir -p $(t_prefix) $(t_taint) $(fake_home)
+	$(amtar_extract_) $(preferred_tarball_) -C $(t_taint)
+	mkfifo $(fake_home)/fifo
+	touch $(fake_home)/f
+	mkdir -p $(fake_home)/d/e
+	ls -lR $(fake_home) $(t_prefix) > $(tp)/.ls-before
+	HOME=$(fake_home); export HOME;			\
+	cd $(t_taint)/$(distdir)			\
+	  && ./configure				\
+	  && $(MAKE)					\
+	  && $(MAKE) check				\
+	  && ls -lR $(fake_home) $(t_prefix) > $(tp)/.ls-after \
+	  && diff $(tp)/.ls-before $(tp)/.ls-after	\
+	  && test -d $(t_prefix)
+	rm -rf $(tp)
+
+# Verify that a twisted use of --program-transform-name=PROGRAM works.
+define install-transform-check
+  echo running install-transform-check			\
+    && rm -rf $(pfx)					\
+    && $(MAKE) program_transform_name='s/.*/zyx/'	\
+      prefix=$(pfx) install				\
+    && test "$$(echo $(pfx)/bin/*)" = "$(pfx)/bin/zyx"	\
+    && test "$$(find $(pfx)/share/man -type f|sed 's,.*/,,;s,\..*,,')" = "zyx"
+endef
+
+# Install, then verify that all binaries and man pages are in place.
+# Note that neither the binary, ginstall, nor the [.1 man page is installed.
+define my-instcheck
+  echo running my-instcheck;				\
+  $(MAKE) prefix=$(pfx) install				\
+    && test ! -f $(pfx)/bin/ginstall			\
+    && { fail=0;					\
+      for i in $(built_programs); do			\
+        test "$$i" = ginstall && i=install;		\
+        for j in "$(pfx)/bin/$$i"			\
+                 "$(pfx)/share/man/man1/$$i.1"; do	\
+          case $$j in *'[.1') continue;; esac;		\
+          test -f "$$j" && :				\
+            || { echo "$$j not installed"; fail=1; };	\
+        done;						\
+      done;						\
+      test $$fail = 1 && exit 1 || :;			\
+    }
+endef
+
+# The hard-linking for-loop below ensures that there is a bin/ directory
+# full of all of the programs under test (except the ones that are required
+# for basic Makefile rules), all symlinked to the just-built "false" program.
+# This is to ensure that if ever a test neglects to make PATH include
+# the build srcdir, these always-failing programs will run.
+# Otherwise, it is too easy to test the wrong programs.
+# Note that "false" itself is a symlink to true, so it too will malfunction.
+define coreutils-path-check
+  {							\
+    echo running coreutils-path-check;			\
+    if test -f $(srcdir)/src/true.c; then		\
+      fail=1;						\
+      mkdir $(bin)					\
+	&& ($(write_loser)) > $(bin)/loser		\
+	&& chmod a+x $(bin)/loser			\
+	&& for i in $(built_programs); do		\
+	       case $$i in				\
+		 rm|expr|basename|echo|sort|ls|tr);;	\
+		 cat|dirname|mv|wc);;			\
+		 *) ln $(bin)/loser $(bin)/$$i;;	\
+	       esac;					\
+	     done					\
+	  && ln -sf ../src/true $(bin)/false		\
+	  && PATH=`pwd`/$(bin)$(PATH_SEPARATOR)$$PATH	\
+		$(MAKE) -C tests check			\
+	  && { test -d gnulib-tests			\
+		 && $(MAKE) -C gnulib-tests check	\
+		 || :; }				\
+	  && rm -rf $(bin)				\
+	  && fail=0;					\
+    else						\
+      fail=0;						\
+    fi;							\
+    test $$fail = 1 && exit 1 || :;			\
+  }
+endef
+
+# More generic version of the rule above.
+define generic-path-check
+  {							\
+    echo running generic-path-check;			\
+    if test -f /bin/false; then				\
+      fail=1;						\
+      mkdir $(bin)					\
+	&& ($(write_loser)) > $(bin)/loser		\
+	&& chmod a+x $(bin)/loser			\
+	&& for i in $(built_programs); do		\
+	     ln $(bin)/loser $(bin)/$$i;		\
+	   done						\
+	&& PATH=`pwd`/$(bin)$(PATH_SEPARATOR)$$PATH	\
+	     $(MAKE) check				\
+	&& { test -d gnulib-tests			\
+	       && $(MAKE) -C gnulib-tests check		\
+	       || :; }					\
+	&& rm -rf $(bin)				\
+	&& fail=0;					\
+    else						\
+      fail=0;						\
+    fi;							\
+    test $$fail = 1 && exit 1 || :;			\
+  }
+endef
+
+# Use this to make sure we don't run these programs when building
+# from a virgin compressed tarball file, below.
+null_AM_MAKEFLAGS ?= \
+  ACLOCAL=false \
+  AUTOCONF=false \
+  AUTOMAKE=false \
+  AUTOHEADER=false \
+  GPERF=false \
+  MAKEINFO=false
+
+ALL_RECURSIVE_TARGETS += my-distcheck
+my-distcheck: $(DIST_ARCHIVES) $(local-check)
+	$(MAKE) syntax-check
+	$(MAKE) check
+	-rm -rf $(t)
+	mkdir -p $(t)
+	$(amtar_extract_) $(preferred_tarball_) -C $(t)
+	(set -e; cd $(t)/$(distdir);			\
+	  ./configure --quiet --enable-gcc-warnings --disable-nls; \
+	  $(MAKE) AM_MAKEFLAGS='$(null_AM_MAKEFLAGS)';	\
+	  $(MAKE) dvi;					\
+	  $(install-transform-check);			\
+	  $(my-instcheck);				\
+	  $(coreutils-path-check);			\
+	  $(generic-path-check);			\
+	  $(MAKE) distclean				\
+	)
+	(cd $(t) && mv $(distdir) $(distdir).old	\
+	  && $(amtar_extract_) - ) < $(preferred_tarball_)
+	find $(t)/$(distdir).old $(t)/$(distdir) -name .deps | xargs rmdir
+	diff -ur $(t)/$(distdir).old $(t)/$(distdir)
+	-rm -rf $(t)
+	rmdir $(tmpdir)/$(PACKAGE) $(tmpdir)
+	@echo "========================"; \
+	echo "ready for distribution:"; \
+	for i in $(DIST_ARCHIVES); do echo "  $$i"; done; \
+	echo "========================"
diff --git a/src/grep/doc/Makefile.am b/src/grep/doc/Makefile.am
new file mode 100644
index 0000000..7075e8d
--- /dev/null
+++ b/src/grep/doc/Makefile.am
@@ -0,0 +1,38 @@
+# Process this file with automake to create Makefile.in
+# Makefile.am for grep/doc.
+#
+# Copyright 2008-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+info_TEXINFOS = grep.texi
+grep_TEXINFOS = fdl.texi
+
+man_MANS = grep.1 fgrep.1 egrep.1
+
+EXTRA_DIST = grep.in.1
+CLEANFILES = grep.1 egrep.1 fgrep.1
+
+grep.1: grep.in.1
+	$(AM_V_GEN)rm -f $@-t $@
+	$(AM_V_at)sed 's/@''VERSION@/$(VERSION)/' $(srcdir)/grep.in.1 > $@-t
+	$(AM_V_at)chmod a=r $@-t
+	$(AM_V_at)mv -f $@-t $@
+
+egrep.1 fgrep.1: Makefile.am
+	$(AM_V_GEN)rm -f $@-t $@
+	$(AM_V_at)inst=`echo grep | sed '$(transform)'`.1 \
+	  && echo ".so man1/$$inst" > $@-t
+	$(AM_V_at)chmod a=r $@-t
+	$(AM_V_at)mv -f $@-t $@
diff --git a/src/grep/doc/Makefile.in b/src/grep/doc/Makefile.in
new file mode 100644
index 0000000..24fe731
--- /dev/null
+++ b/src/grep/doc/Makefile.in
@@ -0,0 +1,2130 @@
+# Makefile.in generated by automake 1.16d from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Process this file with automake to create Makefile.in
+# Makefile.am for grep/doc.
+#
+# Copyright 2008-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+VPATH = @srcdir@
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
+    case $$flg in \
+      *=*|--*) continue;; \
+        -*I) strip_trailopt 'I'; skip_next=yes;; \
+      -*I?*) strip_trailopt 'I';; \
+        -*O) strip_trailopt 'O'; skip_next=yes;; \
+      -*O?*) strip_trailopt 'O';; \
+        -*l) strip_trailopt 'l'; skip_next=yes;; \
+      -*l?*) strip_trailopt 'l';; \
+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
+    case $$flg in \
+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+subdir = doc
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/m4/00gnulib.m4 \
+	$(top_srcdir)/m4/__inline.m4 \
+	$(top_srcdir)/m4/absolute-header.m4 $(top_srcdir)/m4/alloca.m4 \
+	$(top_srcdir)/m4/arpa_inet_h.m4 \
+	$(top_srcdir)/m4/asm-underscore.m4 $(top_srcdir)/m4/assert.m4 \
+	$(top_srcdir)/m4/btowc.m4 $(top_srcdir)/m4/builtin-expect.m4 \
+	$(top_srcdir)/m4/c-stack.m4 $(top_srcdir)/m4/calloc.m4 \
+	$(top_srcdir)/m4/chdir-long.m4 $(top_srcdir)/m4/close.m4 \
+	$(top_srcdir)/m4/closedir.m4 $(top_srcdir)/m4/codeset.m4 \
+	$(top_srcdir)/m4/configmake.m4 $(top_srcdir)/m4/ctype_h.m4 \
+	$(top_srcdir)/m4/cycle-check.m4 $(top_srcdir)/m4/d-ino.m4 \
+	$(top_srcdir)/m4/d-type.m4 $(top_srcdir)/m4/dirent_h.m4 \
+	$(top_srcdir)/m4/dirfd.m4 \
+	$(top_srcdir)/m4/double-slash-root.m4 $(top_srcdir)/m4/dup.m4 \
+	$(top_srcdir)/m4/dup2.m4 $(top_srcdir)/m4/eealloc.m4 \
+	$(top_srcdir)/m4/environ.m4 $(top_srcdir)/m4/errno_h.m4 \
+	$(top_srcdir)/m4/error.m4 $(top_srcdir)/m4/exponentd.m4 \
+	$(top_srcdir)/m4/extensions.m4 \
+	$(top_srcdir)/m4/extern-inline.m4 $(top_srcdir)/m4/fchdir.m4 \
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+	$(top_srcdir)/m4/fcntl.m4 $(top_srcdir)/m4/fcntl_h.m4 \
+	$(top_srcdir)/m4/fdopen.m4 $(top_srcdir)/m4/fdopendir.m4 \
+	$(top_srcdir)/m4/filenamecat.m4 $(top_srcdir)/m4/flexmember.m4 \
+	$(top_srcdir)/m4/float_h.m4 $(top_srcdir)/m4/fnmatch.m4 \
+	$(top_srcdir)/m4/fnmatch_h.m4 $(top_srcdir)/m4/fopen.m4 \
+	$(top_srcdir)/m4/fpending.m4 $(top_srcdir)/m4/fpieee.m4 \
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+	$(top_srcdir)/m4/include_next.m4 $(top_srcdir)/m4/inet_pton.m4 \
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+	$(top_srcdir)/m4/intl-thread-locale.m4 \
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+GL_GNULIB_MDA_UMASK = @GL_GNULIB_MDA_UMASK@
+GL_GNULIB_MDA_UNLINK = @GL_GNULIB_MDA_UNLINK@
+GL_GNULIB_MDA_WCSDUP = @GL_GNULIB_MDA_WCSDUP@
+GL_GNULIB_MDA_WRITE = @GL_GNULIB_MDA_WRITE@
+GL_GNULIB_MEMCHR = @GL_GNULIB_MEMCHR@
+GL_GNULIB_MEMMEM = @GL_GNULIB_MEMMEM@
+GL_GNULIB_MEMPCPY = @GL_GNULIB_MEMPCPY@
+GL_GNULIB_MEMRCHR = @GL_GNULIB_MEMRCHR@
+GL_GNULIB_MKDIR = @GL_GNULIB_MKDIR@
+GL_GNULIB_MKDIRAT = @GL_GNULIB_MKDIRAT@
+GL_GNULIB_MKDTEMP = @GL_GNULIB_MKDTEMP@
+GL_GNULIB_MKFIFO = @GL_GNULIB_MKFIFO@
+GL_GNULIB_MKFIFOAT = @GL_GNULIB_MKFIFOAT@
+GL_GNULIB_MKNOD = @GL_GNULIB_MKNOD@
+GL_GNULIB_MKNODAT = @GL_GNULIB_MKNODAT@
+GL_GNULIB_MKOSTEMP = @GL_GNULIB_MKOSTEMP@
+GL_GNULIB_MKOSTEMPS = @GL_GNULIB_MKOSTEMPS@
+GL_GNULIB_MKSTEMP = @GL_GNULIB_MKSTEMP@
+GL_GNULIB_MKSTEMPS = @GL_GNULIB_MKSTEMPS@
+GL_GNULIB_MKTIME = @GL_GNULIB_MKTIME@
+GL_GNULIB_NANOSLEEP = @GL_GNULIB_NANOSLEEP@
+GL_GNULIB_NL_LANGINFO = @GL_GNULIB_NL_LANGINFO@
+GL_GNULIB_NONBLOCKING = @GL_GNULIB_NONBLOCKING@
+GL_GNULIB_OBSTACK_PRINTF = @GL_GNULIB_OBSTACK_PRINTF@
+GL_GNULIB_OBSTACK_PRINTF_POSIX = @GL_GNULIB_OBSTACK_PRINTF_POSIX@
+GL_GNULIB_OPEN = @GL_GNULIB_OPEN@
+GL_GNULIB_OPENAT = @GL_GNULIB_OPENAT@
+GL_GNULIB_OPENDIR = @GL_GNULIB_OPENDIR@
+GL_GNULIB_OVERRIDES_STRUCT_STAT = @GL_GNULIB_OVERRIDES_STRUCT_STAT@
+GL_GNULIB_PCLOSE = @GL_GNULIB_PCLOSE@
+GL_GNULIB_PERROR = @GL_GNULIB_PERROR@
+GL_GNULIB_PIPE = @GL_GNULIB_PIPE@
+GL_GNULIB_PIPE2 = @GL_GNULIB_PIPE2@
+GL_GNULIB_POPEN = @GL_GNULIB_POPEN@
+GL_GNULIB_POSIX_MEMALIGN = @GL_GNULIB_POSIX_MEMALIGN@
+GL_GNULIB_POSIX_OPENPT = @GL_GNULIB_POSIX_OPENPT@
+GL_GNULIB_PREAD = @GL_GNULIB_PREAD@
+GL_GNULIB_PRINTF = @GL_GNULIB_PRINTF@
+GL_GNULIB_PRINTF_POSIX = @GL_GNULIB_PRINTF_POSIX@
+GL_GNULIB_PSELECT = @GL_GNULIB_PSELECT@
+GL_GNULIB_PTHREAD_COND = @GL_GNULIB_PTHREAD_COND@
+GL_GNULIB_PTHREAD_MUTEX = @GL_GNULIB_PTHREAD_MUTEX@
+GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK = @GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK@
+GL_GNULIB_PTHREAD_ONCE = @GL_GNULIB_PTHREAD_ONCE@
+GL_GNULIB_PTHREAD_RWLOCK = @GL_GNULIB_PTHREAD_RWLOCK@
+GL_GNULIB_PTHREAD_SIGMASK = @GL_GNULIB_PTHREAD_SIGMASK@
+GL_GNULIB_PTHREAD_SPIN = @GL_GNULIB_PTHREAD_SPIN@
+GL_GNULIB_PTHREAD_THREAD = @GL_GNULIB_PTHREAD_THREAD@
+GL_GNULIB_PTHREAD_TSS = @GL_GNULIB_PTHREAD_TSS@
+GL_GNULIB_PTSNAME = @GL_GNULIB_PTSNAME@
+GL_GNULIB_PTSNAME_R = @GL_GNULIB_PTSNAME_R@
+GL_GNULIB_PUTC = @GL_GNULIB_PUTC@
+GL_GNULIB_PUTCHAR = @GL_GNULIB_PUTCHAR@
+GL_GNULIB_PUTENV = @GL_GNULIB_PUTENV@
+GL_GNULIB_PUTS = @GL_GNULIB_PUTS@
+GL_GNULIB_PWRITE = @GL_GNULIB_PWRITE@
+GL_GNULIB_QSORT_R = @GL_GNULIB_QSORT_R@
+GL_GNULIB_RAISE = @GL_GNULIB_RAISE@
+GL_GNULIB_RANDOM = @GL_GNULIB_RANDOM@
+GL_GNULIB_RANDOM_R = @GL_GNULIB_RANDOM_R@
+GL_GNULIB_RAWMEMCHR = @GL_GNULIB_RAWMEMCHR@
+GL_GNULIB_READ = @GL_GNULIB_READ@
+GL_GNULIB_READDIR = @GL_GNULIB_READDIR@
+GL_GNULIB_READLINK = @GL_GNULIB_READLINK@
+GL_GNULIB_READLINKAT = @GL_GNULIB_READLINKAT@
+GL_GNULIB_REALLOCARRAY = @GL_GNULIB_REALLOCARRAY@
+GL_GNULIB_REALLOC_POSIX = @GL_GNULIB_REALLOC_POSIX@
+GL_GNULIB_REALPATH = @GL_GNULIB_REALPATH@
+GL_GNULIB_RECV = @GL_GNULIB_RECV@
+GL_GNULIB_RECVFROM = @GL_GNULIB_RECVFROM@
+GL_GNULIB_REMOVE = @GL_GNULIB_REMOVE@
+GL_GNULIB_RENAME = @GL_GNULIB_RENAME@
+GL_GNULIB_RENAMEAT = @GL_GNULIB_RENAMEAT@
+GL_GNULIB_REWINDDIR = @GL_GNULIB_REWINDDIR@
+GL_GNULIB_RMDIR = @GL_GNULIB_RMDIR@
+GL_GNULIB_RPMATCH = @GL_GNULIB_RPMATCH@
+GL_GNULIB_SCANDIR = @GL_GNULIB_SCANDIR@
+GL_GNULIB_SCANF = @GL_GNULIB_SCANF@
+GL_GNULIB_SCHED_YIELD = @GL_GNULIB_SCHED_YIELD@
+GL_GNULIB_SECURE_GETENV = @GL_GNULIB_SECURE_GETENV@
+GL_GNULIB_SELECT = @GL_GNULIB_SELECT@
+GL_GNULIB_SEND = @GL_GNULIB_SEND@
+GL_GNULIB_SENDTO = @GL_GNULIB_SENDTO@
+GL_GNULIB_SETENV = @GL_GNULIB_SETENV@
+GL_GNULIB_SETHOSTNAME = @GL_GNULIB_SETHOSTNAME@
+GL_GNULIB_SETLOCALE = @GL_GNULIB_SETLOCALE@
+GL_GNULIB_SETLOCALE_NULL = @GL_GNULIB_SETLOCALE_NULL@
+GL_GNULIB_SETSOCKOPT = @GL_GNULIB_SETSOCKOPT@
+GL_GNULIB_SHUTDOWN = @GL_GNULIB_SHUTDOWN@
+GL_GNULIB_SIGABBREV_NP = @GL_GNULIB_SIGABBREV_NP@
+GL_GNULIB_SIGACTION = @GL_GNULIB_SIGACTION@
+GL_GNULIB_SIGDESCR_NP = @GL_GNULIB_SIGDESCR_NP@
+GL_GNULIB_SIGNAL_H_SIGPIPE = @GL_GNULIB_SIGNAL_H_SIGPIPE@
+GL_GNULIB_SIGPROCMASK = @GL_GNULIB_SIGPROCMASK@
+GL_GNULIB_SLEEP = @GL_GNULIB_SLEEP@
+GL_GNULIB_SNPRINTF = @GL_GNULIB_SNPRINTF@
+GL_GNULIB_SOCKET = @GL_GNULIB_SOCKET@
+GL_GNULIB_SPRINTF_POSIX = @GL_GNULIB_SPRINTF_POSIX@
+GL_GNULIB_STAT = @GL_GNULIB_STAT@
+GL_GNULIB_STDIO_H_NONBLOCKING = @GL_GNULIB_STDIO_H_NONBLOCKING@
+GL_GNULIB_STDIO_H_SIGPIPE = @GL_GNULIB_STDIO_H_SIGPIPE@
+GL_GNULIB_STPCPY = @GL_GNULIB_STPCPY@
+GL_GNULIB_STPNCPY = @GL_GNULIB_STPNCPY@
+GL_GNULIB_STRCASESTR = @GL_GNULIB_STRCASESTR@
+GL_GNULIB_STRCHRNUL = @GL_GNULIB_STRCHRNUL@
+GL_GNULIB_STRDUP = @GL_GNULIB_STRDUP@
+GL_GNULIB_STRERROR = @GL_GNULIB_STRERROR@
+GL_GNULIB_STRERRORNAME_NP = @GL_GNULIB_STRERRORNAME_NP@
+GL_GNULIB_STRERROR_R = @GL_GNULIB_STRERROR_R@
+GL_GNULIB_STRFTIME = @GL_GNULIB_STRFTIME@
+GL_GNULIB_STRNCAT = @GL_GNULIB_STRNCAT@
+GL_GNULIB_STRNDUP = @GL_GNULIB_STRNDUP@
+GL_GNULIB_STRNLEN = @GL_GNULIB_STRNLEN@
+GL_GNULIB_STRPBRK = @GL_GNULIB_STRPBRK@
+GL_GNULIB_STRPTIME = @GL_GNULIB_STRPTIME@
+GL_GNULIB_STRSEP = @GL_GNULIB_STRSEP@
+GL_GNULIB_STRSIGNAL = @GL_GNULIB_STRSIGNAL@
+GL_GNULIB_STRSTR = @GL_GNULIB_STRSTR@
+GL_GNULIB_STRTOD = @GL_GNULIB_STRTOD@
+GL_GNULIB_STRTOIMAX = @GL_GNULIB_STRTOIMAX@
+GL_GNULIB_STRTOK_R = @GL_GNULIB_STRTOK_R@
+GL_GNULIB_STRTOL = @GL_GNULIB_STRTOL@
+GL_GNULIB_STRTOLD = @GL_GNULIB_STRTOLD@
+GL_GNULIB_STRTOLL = @GL_GNULIB_STRTOLL@
+GL_GNULIB_STRTOUL = @GL_GNULIB_STRTOUL@
+GL_GNULIB_STRTOULL = @GL_GNULIB_STRTOULL@
+GL_GNULIB_STRTOUMAX = @GL_GNULIB_STRTOUMAX@
+GL_GNULIB_STRVERSCMP = @GL_GNULIB_STRVERSCMP@
+GL_GNULIB_SYMLINK = @GL_GNULIB_SYMLINK@
+GL_GNULIB_SYMLINKAT = @GL_GNULIB_SYMLINKAT@
+GL_GNULIB_SYSTEM_POSIX = @GL_GNULIB_SYSTEM_POSIX@
+GL_GNULIB_TIMEGM = @GL_GNULIB_TIMEGM@
+GL_GNULIB_TIMESPEC_GET = @GL_GNULIB_TIMESPEC_GET@
+GL_GNULIB_TIME_R = @GL_GNULIB_TIME_R@
+GL_GNULIB_TIME_RZ = @GL_GNULIB_TIME_RZ@
+GL_GNULIB_TMPFILE = @GL_GNULIB_TMPFILE@
+GL_GNULIB_TOWCTRANS = @GL_GNULIB_TOWCTRANS@
+GL_GNULIB_TRUNCATE = @GL_GNULIB_TRUNCATE@
+GL_GNULIB_TTYNAME_R = @GL_GNULIB_TTYNAME_R@
+GL_GNULIB_TZSET = @GL_GNULIB_TZSET@
+GL_GNULIB_UNISTD_H_GETOPT = @GL_GNULIB_UNISTD_H_GETOPT@
+GL_GNULIB_UNISTD_H_NONBLOCKING = @GL_GNULIB_UNISTD_H_NONBLOCKING@
+GL_GNULIB_UNISTD_H_SIGPIPE = @GL_GNULIB_UNISTD_H_SIGPIPE@
+GL_GNULIB_UNLINK = @GL_GNULIB_UNLINK@
+GL_GNULIB_UNLINKAT = @GL_GNULIB_UNLINKAT@
+GL_GNULIB_UNLOCKPT = @GL_GNULIB_UNLOCKPT@
+GL_GNULIB_UNSETENV = @GL_GNULIB_UNSETENV@
+GL_GNULIB_USLEEP = @GL_GNULIB_USLEEP@
+GL_GNULIB_UTIMENSAT = @GL_GNULIB_UTIMENSAT@
+GL_GNULIB_VASPRINTF = @GL_GNULIB_VASPRINTF@
+GL_GNULIB_VDPRINTF = @GL_GNULIB_VDPRINTF@
+GL_GNULIB_VFPRINTF = @GL_GNULIB_VFPRINTF@
+GL_GNULIB_VFPRINTF_POSIX = @GL_GNULIB_VFPRINTF_POSIX@
+GL_GNULIB_VFSCANF = @GL_GNULIB_VFSCANF@
+GL_GNULIB_VPRINTF = @GL_GNULIB_VPRINTF@
+GL_GNULIB_VPRINTF_POSIX = @GL_GNULIB_VPRINTF_POSIX@
+GL_GNULIB_VSCANF = @GL_GNULIB_VSCANF@
+GL_GNULIB_VSNPRINTF = @GL_GNULIB_VSNPRINTF@
+GL_GNULIB_VSPRINTF_POSIX = @GL_GNULIB_VSPRINTF_POSIX@
+GL_GNULIB_WCPCPY = @GL_GNULIB_WCPCPY@
+GL_GNULIB_WCPNCPY = @GL_GNULIB_WCPNCPY@
+GL_GNULIB_WCRTOMB = @GL_GNULIB_WCRTOMB@
+GL_GNULIB_WCSCASECMP = @GL_GNULIB_WCSCASECMP@
+GL_GNULIB_WCSCAT = @GL_GNULIB_WCSCAT@
+GL_GNULIB_WCSCHR = @GL_GNULIB_WCSCHR@
+GL_GNULIB_WCSCMP = @GL_GNULIB_WCSCMP@
+GL_GNULIB_WCSCOLL = @GL_GNULIB_WCSCOLL@
+GL_GNULIB_WCSCPY = @GL_GNULIB_WCSCPY@
+GL_GNULIB_WCSCSPN = @GL_GNULIB_WCSCSPN@
+GL_GNULIB_WCSDUP = @GL_GNULIB_WCSDUP@
+GL_GNULIB_WCSFTIME = @GL_GNULIB_WCSFTIME@
+GL_GNULIB_WCSLEN = @GL_GNULIB_WCSLEN@
+GL_GNULIB_WCSNCASECMP = @GL_GNULIB_WCSNCASECMP@
+GL_GNULIB_WCSNCAT = @GL_GNULIB_WCSNCAT@
+GL_GNULIB_WCSNCMP = @GL_GNULIB_WCSNCMP@
+GL_GNULIB_WCSNCPY = @GL_GNULIB_WCSNCPY@
+GL_GNULIB_WCSNLEN = @GL_GNULIB_WCSNLEN@
+GL_GNULIB_WCSNRTOMBS = @GL_GNULIB_WCSNRTOMBS@
+GL_GNULIB_WCSPBRK = @GL_GNULIB_WCSPBRK@
+GL_GNULIB_WCSRCHR = @GL_GNULIB_WCSRCHR@
+GL_GNULIB_WCSRTOMBS = @GL_GNULIB_WCSRTOMBS@
+GL_GNULIB_WCSSPN = @GL_GNULIB_WCSSPN@
+GL_GNULIB_WCSSTR = @GL_GNULIB_WCSSTR@
+GL_GNULIB_WCSTOK = @GL_GNULIB_WCSTOK@
+GL_GNULIB_WCSWIDTH = @GL_GNULIB_WCSWIDTH@
+GL_GNULIB_WCSXFRM = @GL_GNULIB_WCSXFRM@
+GL_GNULIB_WCTOB = @GL_GNULIB_WCTOB@
+GL_GNULIB_WCTOMB = @GL_GNULIB_WCTOMB@
+GL_GNULIB_WCTRANS = @GL_GNULIB_WCTRANS@
+GL_GNULIB_WCTYPE = @GL_GNULIB_WCTYPE@
+GL_GNULIB_WCWIDTH = @GL_GNULIB_WCWIDTH@
+GL_GNULIB_WMEMCHR = @GL_GNULIB_WMEMCHR@
+GL_GNULIB_WMEMCMP = @GL_GNULIB_WMEMCMP@
+GL_GNULIB_WMEMCPY = @GL_GNULIB_WMEMCPY@
+GL_GNULIB_WMEMMOVE = @GL_GNULIB_WMEMMOVE@
+GL_GNULIB_WMEMPCPY = @GL_GNULIB_WMEMPCPY@
+GL_GNULIB_WMEMSET = @GL_GNULIB_WMEMSET@
+GL_GNULIB_WRITE = @GL_GNULIB_WRITE@
+GL_GNULIB__EXIT = @GL_GNULIB__EXIT@
+GMSGFMT = @GMSGFMT@
+GMSGFMT_015 = @GMSGFMT_015@
+GNULIBHEADERS_OVERRIDE_WINT_T = @GNULIBHEADERS_OVERRIDE_WINT_T@
+GNULIB_GETTIMEOFDAY = @GNULIB_GETTIMEOFDAY@
+GNULIB_TEST_WARN_CFLAGS = @GNULIB_TEST_WARN_CFLAGS@
+GNULIB_WARN_CFLAGS = @GNULIB_WARN_CFLAGS@
+GREP = @GREP@
+HAVE_ACCEPT4 = @HAVE_ACCEPT4@
+HAVE_ALIGNED_ALLOC = @HAVE_ALIGNED_ALLOC@
+HAVE_ALLOCA_H = @HAVE_ALLOCA_H@
+HAVE_ALPHASORT = @HAVE_ALPHASORT@
+HAVE_ARPA_INET_H = @HAVE_ARPA_INET_H@
+HAVE_ATOLL = @HAVE_ATOLL@
+HAVE_BTOWC = @HAVE_BTOWC@
+HAVE_C99_STDINT_H = @HAVE_C99_STDINT_H@
+HAVE_CANONICALIZE_FILE_NAME = @HAVE_CANONICALIZE_FILE_NAME@
+HAVE_CHOWN = @HAVE_CHOWN@
+HAVE_CLOSEDIR = @HAVE_CLOSEDIR@
+HAVE_COPY_FILE_RANGE = @HAVE_COPY_FILE_RANGE@
+HAVE_CRTDEFS_H = @HAVE_CRTDEFS_H@
+HAVE_DECL_DIRFD = @HAVE_DECL_DIRFD@
+HAVE_DECL_ECVT = @HAVE_DECL_ECVT@
+HAVE_DECL_ENVIRON = @HAVE_DECL_ENVIRON@
+HAVE_DECL_EXECVPE = @HAVE_DECL_EXECVPE@
+HAVE_DECL_FCHDIR = @HAVE_DECL_FCHDIR@
+HAVE_DECL_FCLOSEALL = @HAVE_DECL_FCLOSEALL@
+HAVE_DECL_FCVT = @HAVE_DECL_FCVT@
+HAVE_DECL_FDATASYNC = @HAVE_DECL_FDATASYNC@
+HAVE_DECL_FDOPENDIR = @HAVE_DECL_FDOPENDIR@
+HAVE_DECL_FPURGE = @HAVE_DECL_FPURGE@
+HAVE_DECL_FSEEKO = @HAVE_DECL_FSEEKO@
+HAVE_DECL_FTELLO = @HAVE_DECL_FTELLO@
+HAVE_DECL_GCVT = @HAVE_DECL_GCVT@
+HAVE_DECL_GETDELIM = @HAVE_DECL_GETDELIM@
+HAVE_DECL_GETDOMAINNAME = @HAVE_DECL_GETDOMAINNAME@
+HAVE_DECL_GETLINE = @HAVE_DECL_GETLINE@
+HAVE_DECL_GETLOADAVG = @HAVE_DECL_GETLOADAVG@
+HAVE_DECL_GETLOGIN = @HAVE_DECL_GETLOGIN@
+HAVE_DECL_GETLOGIN_R = @HAVE_DECL_GETLOGIN_R@
+HAVE_DECL_GETPAGESIZE = @HAVE_DECL_GETPAGESIZE@
+HAVE_DECL_GETUSERSHELL = @HAVE_DECL_GETUSERSHELL@
+HAVE_DECL_IMAXABS = @HAVE_DECL_IMAXABS@
+HAVE_DECL_IMAXDIV = @HAVE_DECL_IMAXDIV@
+HAVE_DECL_INET_NTOP = @HAVE_DECL_INET_NTOP@
+HAVE_DECL_INET_PTON = @HAVE_DECL_INET_PTON@
+HAVE_DECL_INITSTATE = @HAVE_DECL_INITSTATE@
+HAVE_DECL_LOCALTIME_R = @HAVE_DECL_LOCALTIME_R@
+HAVE_DECL_MEMMEM = @HAVE_DECL_MEMMEM@
+HAVE_DECL_MEMRCHR = @HAVE_DECL_MEMRCHR@
+HAVE_DECL_OBSTACK_PRINTF = @HAVE_DECL_OBSTACK_PRINTF@
+HAVE_DECL_SETENV = @HAVE_DECL_SETENV@
+HAVE_DECL_SETHOSTNAME = @HAVE_DECL_SETHOSTNAME@
+HAVE_DECL_SETSTATE = @HAVE_DECL_SETSTATE@
+HAVE_DECL_SNPRINTF = @HAVE_DECL_SNPRINTF@
+HAVE_DECL_STRDUP = @HAVE_DECL_STRDUP@
+HAVE_DECL_STRERROR_R = @HAVE_DECL_STRERROR_R@
+HAVE_DECL_STRNDUP = @HAVE_DECL_STRNDUP@
+HAVE_DECL_STRNLEN = @HAVE_DECL_STRNLEN@
+HAVE_DECL_STRSIGNAL = @HAVE_DECL_STRSIGNAL@
+HAVE_DECL_STRTOIMAX = @HAVE_DECL_STRTOIMAX@
+HAVE_DECL_STRTOK_R = @HAVE_DECL_STRTOK_R@
+HAVE_DECL_STRTOUMAX = @HAVE_DECL_STRTOUMAX@
+HAVE_DECL_TRUNCATE = @HAVE_DECL_TRUNCATE@
+HAVE_DECL_TTYNAME_R = @HAVE_DECL_TTYNAME_R@
+HAVE_DECL_UNSETENV = @HAVE_DECL_UNSETENV@
+HAVE_DECL_VSNPRINTF = @HAVE_DECL_VSNPRINTF@
+HAVE_DECL_WCSDUP = @HAVE_DECL_WCSDUP@
+HAVE_DECL_WCTOB = @HAVE_DECL_WCTOB@
+HAVE_DECL_WCWIDTH = @HAVE_DECL_WCWIDTH@
+HAVE_DIRENT_H = @HAVE_DIRENT_H@
+HAVE_DPRINTF = @HAVE_DPRINTF@
+HAVE_DUP3 = @HAVE_DUP3@
+HAVE_DUPLOCALE = @HAVE_DUPLOCALE@
+HAVE_EUIDACCESS = @HAVE_EUIDACCESS@
+HAVE_EXECVPE = @HAVE_EXECVPE@
+HAVE_EXPLICIT_BZERO = @HAVE_EXPLICIT_BZERO@
+HAVE_FACCESSAT = @HAVE_FACCESSAT@
+HAVE_FCHDIR = @HAVE_FCHDIR@
+HAVE_FCHMODAT = @HAVE_FCHMODAT@
+HAVE_FCHOWNAT = @HAVE_FCHOWNAT@
+HAVE_FCNTL = @HAVE_FCNTL@
+HAVE_FDATASYNC = @HAVE_FDATASYNC@
+HAVE_FDOPENDIR = @HAVE_FDOPENDIR@
+HAVE_FEATURES_H = @HAVE_FEATURES_H@
+HAVE_FFSL = @HAVE_FFSL@
+HAVE_FFSLL = @HAVE_FFSLL@
+HAVE_FNMATCH = @HAVE_FNMATCH@
+HAVE_FNMATCH_H = @HAVE_FNMATCH_H@
+HAVE_FREELOCALE = @HAVE_FREELOCALE@
+HAVE_FSEEKO = @HAVE_FSEEKO@
+HAVE_FSTATAT = @HAVE_FSTATAT@
+HAVE_FSYNC = @HAVE_FSYNC@
+HAVE_FTELLO = @HAVE_FTELLO@
+HAVE_FTRUNCATE = @HAVE_FTRUNCATE@
+HAVE_FUTIMENS = @HAVE_FUTIMENS@
+HAVE_GETDTABLESIZE = @HAVE_GETDTABLESIZE@
+HAVE_GETENTROPY = @HAVE_GETENTROPY@
+HAVE_GETGROUPS = @HAVE_GETGROUPS@
+HAVE_GETHOSTNAME = @HAVE_GETHOSTNAME@
+HAVE_GETLOGIN = @HAVE_GETLOGIN@
+HAVE_GETOPT_H = @HAVE_GETOPT_H@
+HAVE_GETPAGESIZE = @HAVE_GETPAGESIZE@
+HAVE_GETPASS = @HAVE_GETPASS@
+HAVE_GETSUBOPT = @HAVE_GETSUBOPT@
+HAVE_GETTIMEOFDAY = @HAVE_GETTIMEOFDAY@
+HAVE_GETUMASK = @HAVE_GETUMASK@
+HAVE_GRANTPT = @HAVE_GRANTPT@
+HAVE_GROUP_MEMBER = @HAVE_GROUP_MEMBER@
+HAVE_IMAXDIV_T = @HAVE_IMAXDIV_T@
+HAVE_INITSTATE = @HAVE_INITSTATE@
+HAVE_INTTYPES_H = @HAVE_INTTYPES_H@
+HAVE_ISBLANK = @HAVE_ISBLANK@
+HAVE_ISWBLANK = @HAVE_ISWBLANK@
+HAVE_ISWCNTRL = @HAVE_ISWCNTRL@
+HAVE_LANGINFO_ALTMON = @HAVE_LANGINFO_ALTMON@
+HAVE_LANGINFO_CODESET = @HAVE_LANGINFO_CODESET@
+HAVE_LANGINFO_ERA = @HAVE_LANGINFO_ERA@
+HAVE_LANGINFO_H = @HAVE_LANGINFO_H@
+HAVE_LANGINFO_T_FMT_AMPM = @HAVE_LANGINFO_T_FMT_AMPM@
+HAVE_LANGINFO_YESEXPR = @HAVE_LANGINFO_YESEXPR@
+HAVE_LCHMOD = @HAVE_LCHMOD@
+HAVE_LCHOWN = @HAVE_LCHOWN@
+HAVE_LIBSIGSEGV = @HAVE_LIBSIGSEGV@
+HAVE_LINK = @HAVE_LINK@
+HAVE_LINKAT = @HAVE_LINKAT@
+HAVE_LSTAT = @HAVE_LSTAT@
+HAVE_MAX_ALIGN_T = @HAVE_MAX_ALIGN_T@
+HAVE_MBRLEN = @HAVE_MBRLEN@
+HAVE_MBRTOWC = @HAVE_MBRTOWC@
+HAVE_MBSINIT = @HAVE_MBSINIT@
+HAVE_MBSLEN = @HAVE_MBSLEN@
+HAVE_MBSNRTOWCS = @HAVE_MBSNRTOWCS@
+HAVE_MBSRTOWCS = @HAVE_MBSRTOWCS@
+HAVE_MBTOWC = @HAVE_MBTOWC@
+HAVE_MEMPCPY = @HAVE_MEMPCPY@
+HAVE_MKDIRAT = @HAVE_MKDIRAT@
+HAVE_MKDTEMP = @HAVE_MKDTEMP@
+HAVE_MKFIFO = @HAVE_MKFIFO@
+HAVE_MKFIFOAT = @HAVE_MKFIFOAT@
+HAVE_MKNOD = @HAVE_MKNOD@
+HAVE_MKNODAT = @HAVE_MKNODAT@
+HAVE_MKOSTEMP = @HAVE_MKOSTEMP@
+HAVE_MKOSTEMPS = @HAVE_MKOSTEMPS@
+HAVE_MKSTEMP = @HAVE_MKSTEMP@
+HAVE_MKSTEMPS = @HAVE_MKSTEMPS@
+HAVE_MSVC_INVALID_PARAMETER_HANDLER = @HAVE_MSVC_INVALID_PARAMETER_HANDLER@
+HAVE_NANOSLEEP = @HAVE_NANOSLEEP@
+HAVE_NETINET_IN_H = @HAVE_NETINET_IN_H@
+HAVE_NEWLOCALE = @HAVE_NEWLOCALE@
+HAVE_NL_LANGINFO = @HAVE_NL_LANGINFO@
+HAVE_OPENAT = @HAVE_OPENAT@
+HAVE_OPENDIR = @HAVE_OPENDIR@
+HAVE_OS_H = @HAVE_OS_H@
+HAVE_PCLOSE = @HAVE_PCLOSE@
+HAVE_PIPE = @HAVE_PIPE@
+HAVE_PIPE2 = @HAVE_PIPE2@
+HAVE_POPEN = @HAVE_POPEN@
+HAVE_POSIX_MEMALIGN = @HAVE_POSIX_MEMALIGN@
+HAVE_POSIX_OPENPT = @HAVE_POSIX_OPENPT@
+HAVE_POSIX_SIGNALBLOCKING = @HAVE_POSIX_SIGNALBLOCKING@
+HAVE_PREAD = @HAVE_PREAD@
+HAVE_PSELECT = @HAVE_PSELECT@
+HAVE_PTHREAD_ATTR_DESTROY = @HAVE_PTHREAD_ATTR_DESTROY@
+HAVE_PTHREAD_ATTR_GETDETACHSTATE = @HAVE_PTHREAD_ATTR_GETDETACHSTATE@
+HAVE_PTHREAD_ATTR_INIT = @HAVE_PTHREAD_ATTR_INIT@
+HAVE_PTHREAD_ATTR_SETDETACHSTATE = @HAVE_PTHREAD_ATTR_SETDETACHSTATE@
+HAVE_PTHREAD_CONDATTR_DESTROY = @HAVE_PTHREAD_CONDATTR_DESTROY@
+HAVE_PTHREAD_CONDATTR_INIT = @HAVE_PTHREAD_CONDATTR_INIT@
+HAVE_PTHREAD_COND_BROADCAST = @HAVE_PTHREAD_COND_BROADCAST@
+HAVE_PTHREAD_COND_DESTROY = @HAVE_PTHREAD_COND_DESTROY@
+HAVE_PTHREAD_COND_INIT = @HAVE_PTHREAD_COND_INIT@
+HAVE_PTHREAD_COND_SIGNAL = @HAVE_PTHREAD_COND_SIGNAL@
+HAVE_PTHREAD_COND_TIMEDWAIT = @HAVE_PTHREAD_COND_TIMEDWAIT@
+HAVE_PTHREAD_COND_WAIT = @HAVE_PTHREAD_COND_WAIT@
+HAVE_PTHREAD_CREATE = @HAVE_PTHREAD_CREATE@
+HAVE_PTHREAD_CREATE_DETACHED = @HAVE_PTHREAD_CREATE_DETACHED@
+HAVE_PTHREAD_DETACH = @HAVE_PTHREAD_DETACH@
+HAVE_PTHREAD_EQUAL = @HAVE_PTHREAD_EQUAL@
+HAVE_PTHREAD_EXIT = @HAVE_PTHREAD_EXIT@
+HAVE_PTHREAD_GETSPECIFIC = @HAVE_PTHREAD_GETSPECIFIC@
+HAVE_PTHREAD_H = @HAVE_PTHREAD_H@
+HAVE_PTHREAD_JOIN = @HAVE_PTHREAD_JOIN@
+HAVE_PTHREAD_KEY_CREATE = @HAVE_PTHREAD_KEY_CREATE@
+HAVE_PTHREAD_KEY_DELETE = @HAVE_PTHREAD_KEY_DELETE@
+HAVE_PTHREAD_MUTEXATTR_DESTROY = @HAVE_PTHREAD_MUTEXATTR_DESTROY@
+HAVE_PTHREAD_MUTEXATTR_GETROBUST = @HAVE_PTHREAD_MUTEXATTR_GETROBUST@
+HAVE_PTHREAD_MUTEXATTR_GETTYPE = @HAVE_PTHREAD_MUTEXATTR_GETTYPE@
+HAVE_PTHREAD_MUTEXATTR_INIT = @HAVE_PTHREAD_MUTEXATTR_INIT@
+HAVE_PTHREAD_MUTEXATTR_SETROBUST = @HAVE_PTHREAD_MUTEXATTR_SETROBUST@
+HAVE_PTHREAD_MUTEXATTR_SETTYPE = @HAVE_PTHREAD_MUTEXATTR_SETTYPE@
+HAVE_PTHREAD_MUTEX_DESTROY = @HAVE_PTHREAD_MUTEX_DESTROY@
+HAVE_PTHREAD_MUTEX_INIT = @HAVE_PTHREAD_MUTEX_INIT@
+HAVE_PTHREAD_MUTEX_LOCK = @HAVE_PTHREAD_MUTEX_LOCK@
+HAVE_PTHREAD_MUTEX_RECURSIVE = @HAVE_PTHREAD_MUTEX_RECURSIVE@
+HAVE_PTHREAD_MUTEX_ROBUST = @HAVE_PTHREAD_MUTEX_ROBUST@
+HAVE_PTHREAD_MUTEX_TIMEDLOCK = @HAVE_PTHREAD_MUTEX_TIMEDLOCK@
+HAVE_PTHREAD_MUTEX_TRYLOCK = @HAVE_PTHREAD_MUTEX_TRYLOCK@
+HAVE_PTHREAD_MUTEX_UNLOCK = @HAVE_PTHREAD_MUTEX_UNLOCK@
+HAVE_PTHREAD_ONCE = @HAVE_PTHREAD_ONCE@
+HAVE_PTHREAD_PROCESS_SHARED = @HAVE_PTHREAD_PROCESS_SHARED@
+HAVE_PTHREAD_RWLOCKATTR_DESTROY = @HAVE_PTHREAD_RWLOCKATTR_DESTROY@
+HAVE_PTHREAD_RWLOCKATTR_INIT = @HAVE_PTHREAD_RWLOCKATTR_INIT@
+HAVE_PTHREAD_RWLOCK_DESTROY = @HAVE_PTHREAD_RWLOCK_DESTROY@
+HAVE_PTHREAD_RWLOCK_INIT = @HAVE_PTHREAD_RWLOCK_INIT@
+HAVE_PTHREAD_RWLOCK_RDLOCK = @HAVE_PTHREAD_RWLOCK_RDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+HAVE_PTHREAD_RWLOCK_TRYRDLOCK = @HAVE_PTHREAD_RWLOCK_TRYRDLOCK@
+HAVE_PTHREAD_RWLOCK_TRYWRLOCK = @HAVE_PTHREAD_RWLOCK_TRYWRLOCK@
+HAVE_PTHREAD_RWLOCK_UNLOCK = @HAVE_PTHREAD_RWLOCK_UNLOCK@
+HAVE_PTHREAD_RWLOCK_WRLOCK = @HAVE_PTHREAD_RWLOCK_WRLOCK@
+HAVE_PTHREAD_SELF = @HAVE_PTHREAD_SELF@
+HAVE_PTHREAD_SETSPECIFIC = @HAVE_PTHREAD_SETSPECIFIC@
+HAVE_PTHREAD_SIGMASK = @HAVE_PTHREAD_SIGMASK@
+HAVE_PTHREAD_SPINLOCK_T = @HAVE_PTHREAD_SPINLOCK_T@
+HAVE_PTHREAD_SPIN_DESTROY = @HAVE_PTHREAD_SPIN_DESTROY@
+HAVE_PTHREAD_SPIN_INIT = @HAVE_PTHREAD_SPIN_INIT@
+HAVE_PTHREAD_SPIN_LOCK = @HAVE_PTHREAD_SPIN_LOCK@
+HAVE_PTHREAD_SPIN_TRYLOCK = @HAVE_PTHREAD_SPIN_TRYLOCK@
+HAVE_PTHREAD_SPIN_UNLOCK = @HAVE_PTHREAD_SPIN_UNLOCK@
+HAVE_PTHREAD_T = @HAVE_PTHREAD_T@
+HAVE_PTSNAME = @HAVE_PTSNAME@
+HAVE_PTSNAME_R = @HAVE_PTSNAME_R@
+HAVE_PWRITE = @HAVE_PWRITE@
+HAVE_QSORT_R = @HAVE_QSORT_R@
+HAVE_RAISE = @HAVE_RAISE@
+HAVE_RANDOM = @HAVE_RANDOM@
+HAVE_RANDOM_H = @HAVE_RANDOM_H@
+HAVE_RANDOM_R = @HAVE_RANDOM_R@
+HAVE_RAWMEMCHR = @HAVE_RAWMEMCHR@
+HAVE_READDIR = @HAVE_READDIR@
+HAVE_READLINK = @HAVE_READLINK@
+HAVE_READLINKAT = @HAVE_READLINKAT@
+HAVE_REALLOCARRAY = @HAVE_REALLOCARRAY@
+HAVE_REALPATH = @HAVE_REALPATH@
+HAVE_RENAMEAT = @HAVE_RENAMEAT@
+HAVE_REWINDDIR = @HAVE_REWINDDIR@
+HAVE_RPMATCH = @HAVE_RPMATCH@
+HAVE_SA_FAMILY_T = @HAVE_SA_FAMILY_T@
+HAVE_SCANDIR = @HAVE_SCANDIR@
+HAVE_SCHED_H = @HAVE_SCHED_H@
+HAVE_SCHED_YIELD = @HAVE_SCHED_YIELD@
+HAVE_SECURE_GETENV = @HAVE_SECURE_GETENV@
+HAVE_SETENV = @HAVE_SETENV@
+HAVE_SETHOSTNAME = @HAVE_SETHOSTNAME@
+HAVE_SETSTATE = @HAVE_SETSTATE@
+HAVE_SIGABBREV_NP = @HAVE_SIGABBREV_NP@
+HAVE_SIGACTION = @HAVE_SIGACTION@
+HAVE_SIGDESCR_NP = @HAVE_SIGDESCR_NP@
+HAVE_SIGHANDLER_T = @HAVE_SIGHANDLER_T@
+HAVE_SIGINFO_T = @HAVE_SIGINFO_T@
+HAVE_SIGNED_SIG_ATOMIC_T = @HAVE_SIGNED_SIG_ATOMIC_T@
+HAVE_SIGNED_WCHAR_T = @HAVE_SIGNED_WCHAR_T@
+HAVE_SIGNED_WINT_T = @HAVE_SIGNED_WINT_T@
+HAVE_SIGSET_T = @HAVE_SIGSET_T@
+HAVE_SLEEP = @HAVE_SLEEP@
+HAVE_STDINT_H = @HAVE_STDINT_H@
+HAVE_STPCPY = @HAVE_STPCPY@
+HAVE_STPNCPY = @HAVE_STPNCPY@
+HAVE_STRCASESTR = @HAVE_STRCASESTR@
+HAVE_STRCHRNUL = @HAVE_STRCHRNUL@
+HAVE_STRERRORNAME_NP = @HAVE_STRERRORNAME_NP@
+HAVE_STRPBRK = @HAVE_STRPBRK@
+HAVE_STRPTIME = @HAVE_STRPTIME@
+HAVE_STRSEP = @HAVE_STRSEP@
+HAVE_STRTOD = @HAVE_STRTOD@
+HAVE_STRTOL = @HAVE_STRTOL@
+HAVE_STRTOLD = @HAVE_STRTOLD@
+HAVE_STRTOLL = @HAVE_STRTOLL@
+HAVE_STRTOUL = @HAVE_STRTOUL@
+HAVE_STRTOULL = @HAVE_STRTOULL@
+HAVE_STRUCT_RANDOM_DATA = @HAVE_STRUCT_RANDOM_DATA@
+HAVE_STRUCT_SCHED_PARAM = @HAVE_STRUCT_SCHED_PARAM@
+HAVE_STRUCT_SIGACTION_SA_SIGACTION = @HAVE_STRUCT_SIGACTION_SA_SIGACTION@
+HAVE_STRUCT_SOCKADDR_STORAGE = @HAVE_STRUCT_SOCKADDR_STORAGE@
+HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = @HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY@
+HAVE_STRUCT_TIMEVAL = @HAVE_STRUCT_TIMEVAL@
+HAVE_STRVERSCMP = @HAVE_STRVERSCMP@
+HAVE_SYMLINK = @HAVE_SYMLINK@
+HAVE_SYMLINKAT = @HAVE_SYMLINKAT@
+HAVE_SYS_BITYPES_H = @HAVE_SYS_BITYPES_H@
+HAVE_SYS_CDEFS_H = @HAVE_SYS_CDEFS_H@
+HAVE_SYS_INTTYPES_H = @HAVE_SYS_INTTYPES_H@
+HAVE_SYS_IOCTL_H = @HAVE_SYS_IOCTL_H@
+HAVE_SYS_LOADAVG_H = @HAVE_SYS_LOADAVG_H@
+HAVE_SYS_PARAM_H = @HAVE_SYS_PARAM_H@
+HAVE_SYS_SELECT_H = @HAVE_SYS_SELECT_H@
+HAVE_SYS_SOCKET_H = @HAVE_SYS_SOCKET_H@
+HAVE_SYS_TIME_H = @HAVE_SYS_TIME_H@
+HAVE_SYS_TYPES_H = @HAVE_SYS_TYPES_H@
+HAVE_SYS_UIO_H = @HAVE_SYS_UIO_H@
+HAVE_TIMEGM = @HAVE_TIMEGM@
+HAVE_TIMESPEC_GET = @HAVE_TIMESPEC_GET@
+HAVE_TIMEZONE_T = @HAVE_TIMEZONE_T@
+HAVE_TYPE_VOLATILE_SIG_ATOMIC_T = @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
+HAVE_UNISTD_H = @HAVE_UNISTD_H@
+HAVE_UNLINKAT = @HAVE_UNLINKAT@
+HAVE_UNLOCKPT = @HAVE_UNLOCKPT@
+HAVE_USLEEP = @HAVE_USLEEP@
+HAVE_UTIMENSAT = @HAVE_UTIMENSAT@
+HAVE_VASPRINTF = @HAVE_VASPRINTF@
+HAVE_VDPRINTF = @HAVE_VDPRINTF@
+HAVE_VISIBILITY = @HAVE_VISIBILITY@
+HAVE_WCHAR_H = @HAVE_WCHAR_H@
+HAVE_WCHAR_T = @HAVE_WCHAR_T@
+HAVE_WCPCPY = @HAVE_WCPCPY@
+HAVE_WCPNCPY = @HAVE_WCPNCPY@
+HAVE_WCRTOMB = @HAVE_WCRTOMB@
+HAVE_WCSCASECMP = @HAVE_WCSCASECMP@
+HAVE_WCSCAT = @HAVE_WCSCAT@
+HAVE_WCSCHR = @HAVE_WCSCHR@
+HAVE_WCSCMP = @HAVE_WCSCMP@
+HAVE_WCSCOLL = @HAVE_WCSCOLL@
+HAVE_WCSCPY = @HAVE_WCSCPY@
+HAVE_WCSCSPN = @HAVE_WCSCSPN@
+HAVE_WCSDUP = @HAVE_WCSDUP@
+HAVE_WCSFTIME = @HAVE_WCSFTIME@
+HAVE_WCSLEN = @HAVE_WCSLEN@
+HAVE_WCSNCASECMP = @HAVE_WCSNCASECMP@
+HAVE_WCSNCAT = @HAVE_WCSNCAT@
+HAVE_WCSNCMP = @HAVE_WCSNCMP@
+HAVE_WCSNCPY = @HAVE_WCSNCPY@
+HAVE_WCSNLEN = @HAVE_WCSNLEN@
+HAVE_WCSNRTOMBS = @HAVE_WCSNRTOMBS@
+HAVE_WCSPBRK = @HAVE_WCSPBRK@
+HAVE_WCSRCHR = @HAVE_WCSRCHR@
+HAVE_WCSRTOMBS = @HAVE_WCSRTOMBS@
+HAVE_WCSSPN = @HAVE_WCSSPN@
+HAVE_WCSSTR = @HAVE_WCSSTR@
+HAVE_WCSTOK = @HAVE_WCSTOK@
+HAVE_WCSWIDTH = @HAVE_WCSWIDTH@
+HAVE_WCSXFRM = @HAVE_WCSXFRM@
+HAVE_WCTRANS_T = @HAVE_WCTRANS_T@
+HAVE_WCTYPE_H = @HAVE_WCTYPE_H@
+HAVE_WCTYPE_T = @HAVE_WCTYPE_T@
+HAVE_WINSOCK2_H = @HAVE_WINSOCK2_H@
+HAVE_WINT_T = @HAVE_WINT_T@
+HAVE_WMEMCHR = @HAVE_WMEMCHR@
+HAVE_WMEMCMP = @HAVE_WMEMCMP@
+HAVE_WMEMCPY = @HAVE_WMEMCPY@
+HAVE_WMEMMOVE = @HAVE_WMEMMOVE@
+HAVE_WMEMPCPY = @HAVE_WMEMPCPY@
+HAVE_WMEMSET = @HAVE_WMEMSET@
+HAVE_WS2TCPIP_H = @HAVE_WS2TCPIP_H@
+HAVE_XLOCALE_H = @HAVE_XLOCALE_H@
+HAVE__BOOL = @HAVE__BOOL@
+HAVE__EXIT = @HAVE__EXIT@
+HOST_CPU = @HOST_CPU@
+HOST_CPU_C_ABI = @HOST_CPU_C_ABI@
+ICONV_CONST = @ICONV_CONST@
+ICONV_H = @ICONV_H@
+INCLUDE_NEXT = @INCLUDE_NEXT@
+INCLUDE_NEXT_AS_FIRST_DIRECTIVE = @INCLUDE_NEXT_AS_FIRST_DIRECTIVE@
+INET_PTON_LIB = @INET_PTON_LIB@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INT32_MAX_LT_INTMAX_MAX = @INT32_MAX_LT_INTMAX_MAX@
+INT64_MAX_EQ_LONG_MAX = @INT64_MAX_EQ_LONG_MAX@
+INTLLIBS = @INTLLIBS@
+INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
+LDFLAGS = @LDFLAGS@
+LIBCSTACK = @LIBCSTACK@
+LIBGREPUTILS_LIBDEPS = @LIBGREPUTILS_LIBDEPS@
+LIBGREPUTILS_LTLIBDEPS = @LIBGREPUTILS_LTLIBDEPS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBMULTITHREAD = @LIBMULTITHREAD@
+LIBOBJS = @LIBOBJS@
+LIBPMULTITHREAD = @LIBPMULTITHREAD@
+LIBPTHREAD = @LIBPTHREAD@
+LIBS = @LIBS@
+LIBSIGSEGV = @LIBSIGSEGV@
+LIBSIGSEGV_PREFIX = @LIBSIGSEGV_PREFIX@
+LIBSOCKET = @LIBSOCKET@
+LIBSTDTHREAD = @LIBSTDTHREAD@
+LIBTESTS_LIBDEPS = @LIBTESTS_LIBDEPS@
+LIBTHREAD = @LIBTHREAD@
+LIBUNISTRING_UNISTR_H = @LIBUNISTRING_UNISTR_H@
+LIBUNISTRING_UNITYPES_H = @LIBUNISTRING_UNITYPES_H@
+LIBUNISTRING_UNIWIDTH_H = @LIBUNISTRING_UNIWIDTH_H@
+LIB_HARD_LOCALE = @LIB_HARD_LOCALE@
+LIB_MBRTOWC = @LIB_MBRTOWC@
+LIB_NANOSLEEP = @LIB_NANOSLEEP@
+LIB_NL_LANGINFO = @LIB_NL_LANGINFO@
+LIB_PTHREAD = @LIB_PTHREAD@
+LIB_PTHREAD_SIGMASK = @LIB_PTHREAD_SIGMASK@
+LIB_SCHED_YIELD = @LIB_SCHED_YIELD@
+LIB_SELECT = @LIB_SELECT@
+LIB_SETLOCALE = @LIB_SETLOCALE@
+LIB_SETLOCALE_NULL = @LIB_SETLOCALE_NULL@
+LIMITS_H = @LIMITS_H@
+LOCALCHARSET_TESTS_ENVIRONMENT = @LOCALCHARSET_TESTS_ENVIRONMENT@
+LOCALENAME_ENHANCE_LOCALE_FUNCS = @LOCALENAME_ENHANCE_LOCALE_FUNCS@
+LOCALE_FR = @LOCALE_FR@
+LOCALE_FR_UTF8 = @LOCALE_FR_UTF8@
+LOCALE_JA = @LOCALE_JA@
+LOCALE_TR_UTF8 = @LOCALE_TR_UTF8@
+LOCALE_ZH_CN = @LOCALE_ZH_CN@
+LTLIBCSTACK = @LTLIBCSTACK@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBMULTITHREAD = @LTLIBMULTITHREAD@
+LTLIBOBJS = @LTLIBOBJS@
+LTLIBSIGSEGV = @LTLIBSIGSEGV@
+LTLIBTHREAD = @LTLIBTHREAD@
+MAKEINFO = @MAKEINFO@
+MKDIR_P = @MKDIR_P@
+MSGFMT = @MSGFMT@
+MSGFMT_015 = @MSGFMT_015@
+MSGMERGE = @MSGMERGE@
+NETINET_IN_H = @NETINET_IN_H@
+NEXT_ARPA_INET_H = @NEXT_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H = @NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_CTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_CTYPE_H@
+NEXT_AS_FIRST_DIRECTIVE_DIRENT_H = @NEXT_AS_FIRST_DIRECTIVE_DIRENT_H@
+NEXT_AS_FIRST_DIRECTIVE_ERRNO_H = @NEXT_AS_FIRST_DIRECTIVE_ERRNO_H@
+NEXT_AS_FIRST_DIRECTIVE_FCNTL_H = @NEXT_AS_FIRST_DIRECTIVE_FCNTL_H@
+NEXT_AS_FIRST_DIRECTIVE_FLOAT_H = @NEXT_AS_FIRST_DIRECTIVE_FLOAT_H@
+NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H = @NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H@
+NEXT_AS_FIRST_DIRECTIVE_GETOPT_H = @NEXT_AS_FIRST_DIRECTIVE_GETOPT_H@
+NEXT_AS_FIRST_DIRECTIVE_ICONV_H = @NEXT_AS_FIRST_DIRECTIVE_ICONV_H@
+NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H = @NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H = @NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H@
+NEXT_AS_FIRST_DIRECTIVE_LIMITS_H = @NEXT_AS_FIRST_DIRECTIVE_LIMITS_H@
+NEXT_AS_FIRST_DIRECTIVE_LOCALE_H = @NEXT_AS_FIRST_DIRECTIVE_LOCALE_H@
+NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H = @NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H@
+NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H = @NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H@
+NEXT_AS_FIRST_DIRECTIVE_SCHED_H = @NEXT_AS_FIRST_DIRECTIVE_SCHED_H@
+NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H = @NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H@
+NEXT_AS_FIRST_DIRECTIVE_STDARG_H = @NEXT_AS_FIRST_DIRECTIVE_STDARG_H@
+NEXT_AS_FIRST_DIRECTIVE_STDDEF_H = @NEXT_AS_FIRST_DIRECTIVE_STDDEF_H@
+NEXT_AS_FIRST_DIRECTIVE_STDINT_H = @NEXT_AS_FIRST_DIRECTIVE_STDINT_H@
+NEXT_AS_FIRST_DIRECTIVE_STDIO_H = @NEXT_AS_FIRST_DIRECTIVE_STDIO_H@
+NEXT_AS_FIRST_DIRECTIVE_STDLIB_H = @NEXT_AS_FIRST_DIRECTIVE_STDLIB_H@
+NEXT_AS_FIRST_DIRECTIVE_STRING_H = @NEXT_AS_FIRST_DIRECTIVE_STRING_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H@
+NEXT_AS_FIRST_DIRECTIVE_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_UNISTD_H = @NEXT_AS_FIRST_DIRECTIVE_UNISTD_H@
+NEXT_AS_FIRST_DIRECTIVE_WCHAR_H = @NEXT_AS_FIRST_DIRECTIVE_WCHAR_H@
+NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H@
+NEXT_CTYPE_H = @NEXT_CTYPE_H@
+NEXT_DIRENT_H = @NEXT_DIRENT_H@
+NEXT_ERRNO_H = @NEXT_ERRNO_H@
+NEXT_FCNTL_H = @NEXT_FCNTL_H@
+NEXT_FLOAT_H = @NEXT_FLOAT_H@
+NEXT_FNMATCH_H = @NEXT_FNMATCH_H@
+NEXT_GETOPT_H = @NEXT_GETOPT_H@
+NEXT_ICONV_H = @NEXT_ICONV_H@
+NEXT_INTTYPES_H = @NEXT_INTTYPES_H@
+NEXT_LANGINFO_H = @NEXT_LANGINFO_H@
+NEXT_LIMITS_H = @NEXT_LIMITS_H@
+NEXT_LOCALE_H = @NEXT_LOCALE_H@
+NEXT_NETINET_IN_H = @NEXT_NETINET_IN_H@
+NEXT_PTHREAD_H = @NEXT_PTHREAD_H@
+NEXT_SCHED_H = @NEXT_SCHED_H@
+NEXT_SIGNAL_H = @NEXT_SIGNAL_H@
+NEXT_STDARG_H = @NEXT_STDARG_H@
+NEXT_STDDEF_H = @NEXT_STDDEF_H@
+NEXT_STDINT_H = @NEXT_STDINT_H@
+NEXT_STDIO_H = @NEXT_STDIO_H@
+NEXT_STDLIB_H = @NEXT_STDLIB_H@
+NEXT_STRING_H = @NEXT_STRING_H@
+NEXT_SYS_IOCTL_H = @NEXT_SYS_IOCTL_H@
+NEXT_SYS_SELECT_H = @NEXT_SYS_SELECT_H@
+NEXT_SYS_SOCKET_H = @NEXT_SYS_SOCKET_H@
+NEXT_SYS_STAT_H = @NEXT_SYS_STAT_H@
+NEXT_SYS_TIME_H = @NEXT_SYS_TIME_H@
+NEXT_SYS_TYPES_H = @NEXT_SYS_TYPES_H@
+NEXT_SYS_UIO_H = @NEXT_SYS_UIO_H@
+NEXT_TIME_H = @NEXT_TIME_H@
+NEXT_UNISTD_H = @NEXT_UNISTD_H@
+NEXT_WCHAR_H = @NEXT_WCHAR_H@
+NEXT_WCTYPE_H = @NEXT_WCTYPE_H@
+OBJEXT = @OBJEXT@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PCRE_CFLAGS = @PCRE_CFLAGS@
+PCRE_LIBS = @PCRE_LIBS@
+PERL = @PERL@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+POSUB = @POSUB@
+PRAGMA_COLUMNS = @PRAGMA_COLUMNS@
+PRAGMA_SYSTEM_HEADER = @PRAGMA_SYSTEM_HEADER@
+PRIPTR_PREFIX = @PRIPTR_PREFIX@
+PTHREAD_H_DEFINES_STRUCT_TIMESPEC = @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
+PTRDIFF_T_SUFFIX = @PTRDIFF_T_SUFFIX@
+RANLIB = @RANLIB@
+REPLACE_ACCESS = @REPLACE_ACCESS@
+REPLACE_ALIGNED_ALLOC = @REPLACE_ALIGNED_ALLOC@
+REPLACE_BTOWC = @REPLACE_BTOWC@
+REPLACE_CALLOC = @REPLACE_CALLOC@
+REPLACE_CANONICALIZE_FILE_NAME = @REPLACE_CANONICALIZE_FILE_NAME@
+REPLACE_CHOWN = @REPLACE_CHOWN@
+REPLACE_CLOSE = @REPLACE_CLOSE@
+REPLACE_CLOSEDIR = @REPLACE_CLOSEDIR@
+REPLACE_CREAT = @REPLACE_CREAT@
+REPLACE_CTIME = @REPLACE_CTIME@
+REPLACE_DIRFD = @REPLACE_DIRFD@
+REPLACE_DPRINTF = @REPLACE_DPRINTF@
+REPLACE_DUP = @REPLACE_DUP@
+REPLACE_DUP2 = @REPLACE_DUP2@
+REPLACE_DUPLOCALE = @REPLACE_DUPLOCALE@
+REPLACE_EXECL = @REPLACE_EXECL@
+REPLACE_EXECLE = @REPLACE_EXECLE@
+REPLACE_EXECLP = @REPLACE_EXECLP@
+REPLACE_EXECV = @REPLACE_EXECV@
+REPLACE_EXECVE = @REPLACE_EXECVE@
+REPLACE_EXECVP = @REPLACE_EXECVP@
+REPLACE_EXECVPE = @REPLACE_EXECVPE@
+REPLACE_FACCESSAT = @REPLACE_FACCESSAT@
+REPLACE_FCHMODAT = @REPLACE_FCHMODAT@
+REPLACE_FCHOWNAT = @REPLACE_FCHOWNAT@
+REPLACE_FCLOSE = @REPLACE_FCLOSE@
+REPLACE_FCNTL = @REPLACE_FCNTL@
+REPLACE_FDOPEN = @REPLACE_FDOPEN@
+REPLACE_FDOPENDIR = @REPLACE_FDOPENDIR@
+REPLACE_FFLUSH = @REPLACE_FFLUSH@
+REPLACE_FFSLL = @REPLACE_FFSLL@
+REPLACE_FNMATCH = @REPLACE_FNMATCH@
+REPLACE_FOPEN = @REPLACE_FOPEN@
+REPLACE_FPRINTF = @REPLACE_FPRINTF@
+REPLACE_FPURGE = @REPLACE_FPURGE@
+REPLACE_FREE = @REPLACE_FREE@
+REPLACE_FREELOCALE = @REPLACE_FREELOCALE@
+REPLACE_FREOPEN = @REPLACE_FREOPEN@
+REPLACE_FSEEK = @REPLACE_FSEEK@
+REPLACE_FSEEKO = @REPLACE_FSEEKO@
+REPLACE_FSTAT = @REPLACE_FSTAT@
+REPLACE_FSTATAT = @REPLACE_FSTATAT@
+REPLACE_FTELL = @REPLACE_FTELL@
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+REPLACE_PTHREAD_ATTR_GETDETACHSTATE = @REPLACE_PTHREAD_ATTR_GETDETACHSTATE@
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+REPLACE_PTHREAD_ATTR_SETDETACHSTATE = @REPLACE_PTHREAD_ATTR_SETDETACHSTATE@
+REPLACE_PTHREAD_CONDATTR_DESTROY = @REPLACE_PTHREAD_CONDATTR_DESTROY@
+REPLACE_PTHREAD_CONDATTR_INIT = @REPLACE_PTHREAD_CONDATTR_INIT@
+REPLACE_PTHREAD_COND_BROADCAST = @REPLACE_PTHREAD_COND_BROADCAST@
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+REPLACE_PTHREAD_COND_WAIT = @REPLACE_PTHREAD_COND_WAIT@
+REPLACE_PTHREAD_CREATE = @REPLACE_PTHREAD_CREATE@
+REPLACE_PTHREAD_DETACH = @REPLACE_PTHREAD_DETACH@
+REPLACE_PTHREAD_EQUAL = @REPLACE_PTHREAD_EQUAL@
+REPLACE_PTHREAD_EXIT = @REPLACE_PTHREAD_EXIT@
+REPLACE_PTHREAD_GETSPECIFIC = @REPLACE_PTHREAD_GETSPECIFIC@
+REPLACE_PTHREAD_JOIN = @REPLACE_PTHREAD_JOIN@
+REPLACE_PTHREAD_KEY_CREATE = @REPLACE_PTHREAD_KEY_CREATE@
+REPLACE_PTHREAD_KEY_DELETE = @REPLACE_PTHREAD_KEY_DELETE@
+REPLACE_PTHREAD_MUTEXATTR_DESTROY = @REPLACE_PTHREAD_MUTEXATTR_DESTROY@
+REPLACE_PTHREAD_MUTEXATTR_GETROBUST = @REPLACE_PTHREAD_MUTEXATTR_GETROBUST@
+REPLACE_PTHREAD_MUTEXATTR_GETTYPE = @REPLACE_PTHREAD_MUTEXATTR_GETTYPE@
+REPLACE_PTHREAD_MUTEXATTR_INIT = @REPLACE_PTHREAD_MUTEXATTR_INIT@
+REPLACE_PTHREAD_MUTEXATTR_SETROBUST = @REPLACE_PTHREAD_MUTEXATTR_SETROBUST@
+REPLACE_PTHREAD_MUTEXATTR_SETTYPE = @REPLACE_PTHREAD_MUTEXATTR_SETTYPE@
+REPLACE_PTHREAD_MUTEX_DESTROY = @REPLACE_PTHREAD_MUTEX_DESTROY@
+REPLACE_PTHREAD_MUTEX_INIT = @REPLACE_PTHREAD_MUTEX_INIT@
+REPLACE_PTHREAD_MUTEX_LOCK = @REPLACE_PTHREAD_MUTEX_LOCK@
+REPLACE_PTHREAD_MUTEX_TIMEDLOCK = @REPLACE_PTHREAD_MUTEX_TIMEDLOCK@
+REPLACE_PTHREAD_MUTEX_TRYLOCK = @REPLACE_PTHREAD_MUTEX_TRYLOCK@
+REPLACE_PTHREAD_MUTEX_UNLOCK = @REPLACE_PTHREAD_MUTEX_UNLOCK@
+REPLACE_PTHREAD_ONCE = @REPLACE_PTHREAD_ONCE@
+REPLACE_PTHREAD_RWLOCKATTR_DESTROY = @REPLACE_PTHREAD_RWLOCKATTR_DESTROY@
+REPLACE_PTHREAD_RWLOCKATTR_INIT = @REPLACE_PTHREAD_RWLOCKATTR_INIT@
+REPLACE_PTHREAD_RWLOCK_DESTROY = @REPLACE_PTHREAD_RWLOCK_DESTROY@
+REPLACE_PTHREAD_RWLOCK_INIT = @REPLACE_PTHREAD_RWLOCK_INIT@
+REPLACE_PTHREAD_RWLOCK_RDLOCK = @REPLACE_PTHREAD_RWLOCK_RDLOCK@
+REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK = @REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK = @REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+REPLACE_PTHREAD_RWLOCK_TRYRDLOCK = @REPLACE_PTHREAD_RWLOCK_TRYRDLOCK@
+REPLACE_PTHREAD_RWLOCK_TRYWRLOCK = @REPLACE_PTHREAD_RWLOCK_TRYWRLOCK@
+REPLACE_PTHREAD_RWLOCK_UNLOCK = @REPLACE_PTHREAD_RWLOCK_UNLOCK@
+REPLACE_PTHREAD_RWLOCK_WRLOCK = @REPLACE_PTHREAD_RWLOCK_WRLOCK@
+REPLACE_PTHREAD_SELF = @REPLACE_PTHREAD_SELF@
+REPLACE_PTHREAD_SETSPECIFIC = @REPLACE_PTHREAD_SETSPECIFIC@
+REPLACE_PTHREAD_SIGMASK = @REPLACE_PTHREAD_SIGMASK@
+REPLACE_PTHREAD_SPIN_DESTROY = @REPLACE_PTHREAD_SPIN_DESTROY@
+REPLACE_PTHREAD_SPIN_INIT = @REPLACE_PTHREAD_SPIN_INIT@
+REPLACE_PTHREAD_SPIN_LOCK = @REPLACE_PTHREAD_SPIN_LOCK@
+REPLACE_PTHREAD_SPIN_TRYLOCK = @REPLACE_PTHREAD_SPIN_TRYLOCK@
+REPLACE_PTHREAD_SPIN_UNLOCK = @REPLACE_PTHREAD_SPIN_UNLOCK@
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+REPLACE_SETLOCALE = @REPLACE_SETLOCALE@
+REPLACE_SETSTATE = @REPLACE_SETSTATE@
+REPLACE_SLEEP = @REPLACE_SLEEP@
+REPLACE_SNPRINTF = @REPLACE_SNPRINTF@
+REPLACE_SPRINTF = @REPLACE_SPRINTF@
+REPLACE_STAT = @REPLACE_STAT@
+REPLACE_STDIO_READ_FUNCS = @REPLACE_STDIO_READ_FUNCS@
+REPLACE_STDIO_WRITE_FUNCS = @REPLACE_STDIO_WRITE_FUNCS@
+REPLACE_STPNCPY = @REPLACE_STPNCPY@
+REPLACE_STRCASESTR = @REPLACE_STRCASESTR@
+REPLACE_STRCHRNUL = @REPLACE_STRCHRNUL@
+REPLACE_STRDUP = @REPLACE_STRDUP@
+REPLACE_STRERROR = @REPLACE_STRERROR@
+REPLACE_STRERRORNAME_NP = @REPLACE_STRERRORNAME_NP@
+REPLACE_STRERROR_R = @REPLACE_STRERROR_R@
+REPLACE_STRFTIME = @REPLACE_STRFTIME@
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+REPLACE_STRNLEN = @REPLACE_STRNLEN@
+REPLACE_STRSIGNAL = @REPLACE_STRSIGNAL@
+REPLACE_STRSTR = @REPLACE_STRSTR@
+REPLACE_STRTOD = @REPLACE_STRTOD@
+REPLACE_STRTOIMAX = @REPLACE_STRTOIMAX@
+REPLACE_STRTOK_R = @REPLACE_STRTOK_R@
+REPLACE_STRTOL = @REPLACE_STRTOL@
+REPLACE_STRTOLD = @REPLACE_STRTOLD@
+REPLACE_STRTOLL = @REPLACE_STRTOLL@
+REPLACE_STRTOUL = @REPLACE_STRTOUL@
+REPLACE_STRTOULL = @REPLACE_STRTOULL@
+REPLACE_STRTOUMAX = @REPLACE_STRTOUMAX@
+REPLACE_STRUCT_LCONV = @REPLACE_STRUCT_LCONV@
+REPLACE_STRUCT_TIMEVAL = @REPLACE_STRUCT_TIMEVAL@
+REPLACE_SYMLINK = @REPLACE_SYMLINK@
+REPLACE_SYMLINKAT = @REPLACE_SYMLINKAT@
+REPLACE_TIMEGM = @REPLACE_TIMEGM@
+REPLACE_TMPFILE = @REPLACE_TMPFILE@
+REPLACE_TOWLOWER = @REPLACE_TOWLOWER@
+REPLACE_TRUNCATE = @REPLACE_TRUNCATE@
+REPLACE_TTYNAME_R = @REPLACE_TTYNAME_R@
+REPLACE_TZSET = @REPLACE_TZSET@
+REPLACE_UNLINK = @REPLACE_UNLINK@
+REPLACE_UNLINKAT = @REPLACE_UNLINKAT@
+REPLACE_UNSETENV = @REPLACE_UNSETENV@
+REPLACE_USLEEP = @REPLACE_USLEEP@
+REPLACE_UTIMENSAT = @REPLACE_UTIMENSAT@
+REPLACE_VASPRINTF = @REPLACE_VASPRINTF@
+REPLACE_VDPRINTF = @REPLACE_VDPRINTF@
+REPLACE_VFPRINTF = @REPLACE_VFPRINTF@
+REPLACE_VPRINTF = @REPLACE_VPRINTF@
+REPLACE_VSNPRINTF = @REPLACE_VSNPRINTF@
+REPLACE_VSPRINTF = @REPLACE_VSPRINTF@
+REPLACE_WCRTOMB = @REPLACE_WCRTOMB@
+REPLACE_WCSFTIME = @REPLACE_WCSFTIME@
+REPLACE_WCSNRTOMBS = @REPLACE_WCSNRTOMBS@
+REPLACE_WCSRTOMBS = @REPLACE_WCSRTOMBS@
+REPLACE_WCSTOK = @REPLACE_WCSTOK@
+REPLACE_WCSWIDTH = @REPLACE_WCSWIDTH@
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+REPLACE_WCTOMB = @REPLACE_WCTOMB@
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+REPLACE_WRITE = @REPLACE_WRITE@
+SED = @SED@
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+SIGSEGV_H = @SIGSEGV_H@
+SIG_ATOMIC_T_SUFFIX = @SIG_ATOMIC_T_SUFFIX@
+SIZE_T_SUFFIX = @SIZE_T_SUFFIX@
+STDALIGN_H = @STDALIGN_H@
+STDARG_H = @STDARG_H@
+STDBOOL_H = @STDBOOL_H@
+STDDEF_H = @STDDEF_H@
+STDINT_H = @STDINT_H@
+STRIP = @STRIP@
+SYS_IOCTL_H_HAVE_WINSOCK2_H = @SYS_IOCTL_H_HAVE_WINSOCK2_H@
+SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS = @SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+SYS_TIME_H_DEFINES_STRUCT_TIMESPEC = @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
+TIME_H_DEFINES_STRUCT_TIMESPEC = @TIME_H_DEFINES_STRUCT_TIMESPEC@
+TIME_H_DEFINES_TIME_UTC = @TIME_H_DEFINES_TIME_UTC@
+UINT32_MAX_LT_UINTMAX_MAX = @UINT32_MAX_LT_UINTMAX_MAX@
+UINT64_MAX_EQ_ULONG_MAX = @UINT64_MAX_EQ_ULONG_MAX@
+UNDEFINE_STRTOK_R = @UNDEFINE_STRTOK_R@
+UNISTD_H_DEFINES_STRUCT_TIMESPEC = @UNISTD_H_DEFINES_STRUCT_TIMESPEC@
+UNISTD_H_HAVE_SYS_RANDOM_H = @UNISTD_H_HAVE_SYS_RANDOM_H@
+UNISTD_H_HAVE_WINSOCK2_H = @UNISTD_H_HAVE_WINSOCK2_H@
+UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS = @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+USE_NLS = @USE_NLS@
+VERSION = @VERSION@
+WARN_CFLAGS = @WARN_CFLAGS@
+WCHAR_T_SUFFIX = @WCHAR_T_SUFFIX@
+WERROR_CFLAGS = @WERROR_CFLAGS@
+WINDOWS_64_BIT_OFF_T = @WINDOWS_64_BIT_OFF_T@
+WINDOWS_64_BIT_ST_SIZE = @WINDOWS_64_BIT_ST_SIZE@
+WINDOWS_STAT_INODES = @WINDOWS_STAT_INODES@
+WINDOWS_STAT_TIMESPEC = @WINDOWS_STAT_TIMESPEC@
+WINT_T_SUFFIX = @WINT_T_SUFFIX@
+XGETTEXT = @XGETTEXT@
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+abs_aux_dir = @abs_aux_dir@
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+build_vendor = @build_vendor@
+builddir = @builddir@
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+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+gl_LIBOBJS = @gl_LIBOBJS@
+gl_LTLIBOBJS = @gl_LTLIBOBJS@
+gltests_LIBOBJS = @gltests_LIBOBJS@
+gltests_LTLIBOBJS = @gltests_LTLIBOBJS@
+gltests_WITNESS = @gltests_WITNESS@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libdir = @libdir@
+libexecdir = @libexecdir@
+lispdir = @lispdir@
+localedir = @localedir@
+localstatedir = @localstatedir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
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+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+info_TEXINFOS = grep.texi
+grep_TEXINFOS = fdl.texi
+man_MANS = grep.1 fgrep.1 egrep.1
+EXTRA_DIST = grep.in.1
+CLEANFILES = grep.1 egrep.1 fgrep.1
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .dvi .html .info .pdf .ps .texi
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu doc/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu doc/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+.texi.info:
+	$(AM_V_MAKEINFO)restore=: && backupdir="$(am__leading_dot)am$$$$" && \
+	am__cwd=`pwd` && $(am__cd) $(srcdir) && \
+	rm -rf $$backupdir && mkdir $$backupdir && \
+	if ($(MAKEINFO) --version) >/dev/null 2>&1; then \
+	  for f in $@ $@-[0-9] $@-[0-9][0-9] $(@:.info=).i[0-9] $(@:.info=).i[0-9][0-9]; do \
+	    if test -f $$f; then mv $$f $$backupdir; restore=mv; else :; fi; \
+	  done; \
+	else :; fi && \
+	cd "$$am__cwd"; \
+	if $(MAKEINFO) $(AM_MAKEINFOFLAGS) $(MAKEINFOFLAGS) -I $(srcdir) \
+	 -o $@ $<; \
+	then \
+	  rc=0; \
+	  $(am__cd) $(srcdir); \
+	else \
+	  rc=$$?; \
+	  $(am__cd) $(srcdir) && \
+	  $$restore $$backupdir/* `echo "./$@" | sed 's|[^/]*$$||'`; \
+	fi; \
+	rm -rf $$backupdir; exit $$rc
+
+.texi.dvi:
+	$(AM_V_TEXI2DVI)TEXINPUTS="$(am__TEXINFO_TEX_DIR)$(PATH_SEPARATOR)$$TEXINPUTS" \
+	MAKEINFO='$(MAKEINFO) $(AM_MAKEINFOFLAGS) $(MAKEINFOFLAGS) -I $(srcdir)' \
+	$(TEXI2DVI) $(AM_V_texinfo) --build-dir=$(@:.dvi=.t2d) -o $@ $(AM_V_texidevnull) \
+	$<
+
+.texi.pdf:
+	$(AM_V_TEXI2PDF)TEXINPUTS="$(am__TEXINFO_TEX_DIR)$(PATH_SEPARATOR)$$TEXINPUTS" \
+	MAKEINFO='$(MAKEINFO) $(AM_MAKEINFOFLAGS) $(MAKEINFOFLAGS) -I $(srcdir)' \
+	$(TEXI2PDF) $(AM_V_texinfo) --build-dir=$(@:.pdf=.t2p) -o $@ $(AM_V_texidevnull) \
+	$<
+
+.texi.html:
+	$(AM_V_MAKEINFO)rm -rf $(@:.html=.htp)
+	$(AM_V_at)if $(MAKEINFOHTML) $(AM_MAKEINFOHTMLFLAGS) $(MAKEINFOFLAGS) -I $(srcdir) \
+	 -o $(@:.html=.htp) $<; \
+	then \
+	  rm -rf $@ && mv $(@:.html=.htp) $@; \
+	else \
+	  rm -rf $(@:.html=.htp); exit 1; \
+	fi
+$(srcdir)/grep.info: grep.texi $(srcdir)/version.texi $(grep_TEXINFOS)
+grep.dvi: grep.texi $(srcdir)/version.texi $(grep_TEXINFOS)
+grep.pdf: grep.texi $(srcdir)/version.texi $(grep_TEXINFOS)
+grep.html: grep.texi $(srcdir)/version.texi $(grep_TEXINFOS)
+$(srcdir)/version.texi:  $(srcdir)/stamp-vti
+$(srcdir)/stamp-vti: grep.texi $(top_srcdir)/configure
+	@(dir=.; test -f ./grep.texi || dir=$(srcdir); \
+	set `$(SHELL) $(top_srcdir)/build-aux/mdate-sh $$dir/grep.texi`; \
+	echo "@set UPDATED $$1 $$2 $$3"; \
+	echo "@set UPDATED-MONTH $$2 $$3"; \
+	echo "@set EDITION $(VERSION)"; \
+	echo "@set VERSION $(VERSION)") > vti.tmp$$$$ && \
+	(cmp -s vti.tmp$$$$ $(srcdir)/version.texi \
+	  || (echo "Updating $(srcdir)/version.texi" && \
+	      cp vti.tmp$$$$ $(srcdir)/version.texi.tmp$$$$ && \
+	      mv $(srcdir)/version.texi.tmp$$$$ $(srcdir)/version.texi)) && \
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+	  rm -f "$(DESTDIR)$(psdir)/$$f"; \
+	done
+
+dist-info: $(INFO_DEPS)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
+	list='$(INFO_DEPS)'; \
+	for base in $$list; do \
+	  case $$base in \
+	    $(srcdir)/*) base=`echo "$$base" | sed "s|^$$srcdirstrip/||"`;; \
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+	  if test -f $$base; then d=.; else d=$(srcdir); fi; \
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+	      relfile=`expr "$$file" : "$$d/\(.*\)"`; \
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+	list2='$(man_MANS)'; \
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+	  && test -n "`echo $$list1$$list2`" \
+	  || exit 0; \
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+	if test -n "$$list2"; then \
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+	fi; \
+	} | while read p; do \
+	  if test -f $$p; then d=; else d="$(srcdir)/"; fi; \
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+	done | \
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+	  echo " $(MKDIR_P) '$(DESTDIR)$(psdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(psdir)" || exit 1; \
+	fi; \
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+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
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+	while read files; do \
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+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(psdir)" || exit $$?; done
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
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+	maintainer-clean-generic maintainer-clean-vti
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+mostlyclean: mostlyclean-am
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+mostlyclean-am: mostlyclean-aminfo mostlyclean-generic mostlyclean-vti
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+ps-am: $(PSS)
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+uninstall-am: uninstall-dvi-am uninstall-html-am uninstall-info-am \
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+uninstall-man: uninstall-man1
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+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-aminfo clean-generic \
+	cscopelist-am ctags-am dist-info distclean distclean-generic \
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+	install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
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+	uninstall-man uninstall-man1 uninstall-pdf-am uninstall-ps-am
+
+.PRECIOUS: Makefile
+
+
+grep.1: grep.in.1
+	$(AM_V_GEN)rm -f $@-t $@
+	$(AM_V_at)sed 's/@''VERSION@/$(VERSION)/' $(srcdir)/grep.in.1 > $@-t
+	$(AM_V_at)chmod a=r $@-t
+	$(AM_V_at)mv -f $@-t $@
+
+egrep.1 fgrep.1: Makefile.am
+	$(AM_V_GEN)rm -f $@-t $@
+	$(AM_V_at)inst=`echo grep | sed '$(transform)'`.1 \
+	  && echo ".so man1/$$inst" > $@-t
+	$(AM_V_at)chmod a=r $@-t
+	$(AM_V_at)mv -f $@-t $@
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/grep/doc/fdl.texi b/src/grep/doc/fdl.texi
new file mode 100644
index 0000000..eaf3da0
--- /dev/null
+++ b/src/grep/doc/fdl.texi
@@ -0,0 +1,505 @@
+@c The GNU Free Documentation License.
+@center Version 1.3, 3 November 2008
+
+@c This file is intended to be included within another document,
+@c hence no sectioning command or @node.
+
+@display
+Copyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
+@uref{https://fsf.org/}
+
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+@end display
+
+@enumerate 0
+@item
+PREAMBLE
+
+The purpose of this License is to make a manual, textbook, or other
+functional and useful document @dfn{free} in the sense of freedom: to
+assure everyone the effective freedom to copy and redistribute it,
+with or without modifying it, either commercially or noncommercially.
+Secondarily, this License preserves for the author and publisher a way
+to get credit for their work, while not being considered responsible
+for modifications made by others.
+
+This License is a kind of ``copyleft'', which means that derivative
+works of the document must themselves be free in the same sense.  It
+complements the GNU General Public License, which is a copyleft
+license designed for free software.
+
+We have designed this License in order to use it for manuals for free
+software, because free software needs free documentation: a free
+program should come with manuals providing the same freedoms that the
+software does.  But this License is not limited to software manuals;
+it can be used for any textual work, regardless of subject matter or
+whether it is published as a printed book.  We recommend this License
+principally for works whose purpose is instruction or reference.
+
+@item
+APPLICABILITY AND DEFINITIONS
+
+This License applies to any manual or other work, in any medium, that
+contains a notice placed by the copyright holder saying it can be
+distributed under the terms of this License.  Such a notice grants a
+world-wide, royalty-free license, unlimited in duration, to use that
+work under the conditions stated herein.  The ``Document'', below,
+refers to any such manual or work.  Any member of the public is a
+licensee, and is addressed as ``you''.  You accept the license if you
+copy, modify or distribute the work in a way requiring permission
+under copyright law.
+
+A ``Modified Version'' of the Document means any work containing the
+Document or a portion of it, either copied verbatim, or with
+modifications and/or translated into another language.
+
+A ``Secondary Section'' is a named appendix or a front-matter section
+of the Document that deals exclusively with the relationship of the
+publishers or authors of the Document to the Document's overall
+subject (or to related matters) and contains nothing that could fall
+directly within that overall subject.  (Thus, if the Document is in
+part a textbook of mathematics, a Secondary Section may not explain
+any mathematics.)  The relationship could be a matter of historical
+connection with the subject or with related matters, or of legal,
+commercial, philosophical, ethical or political position regarding
+them.
+
+The ``Invariant Sections'' are certain Secondary Sections whose titles
+are designated, as being those of Invariant Sections, in the notice
+that says that the Document is released under this License.  If a
+section does not fit the above definition of Secondary then it is not
+allowed to be designated as Invariant.  The Document may contain zero
+Invariant Sections.  If the Document does not identify any Invariant
+Sections then there are none.
+
+The ``Cover Texts'' are certain short passages of text that are listed,
+as Front-Cover Texts or Back-Cover Texts, in the notice that says that
+the Document is released under this License.  A Front-Cover Text may
+be at most 5 words, and a Back-Cover Text may be at most 25 words.
+
+A ``Transparent'' copy of the Document means a machine-readable copy,
+represented in a format whose specification is available to the
+general public, that is suitable for revising the document
+straightforwardly with generic text editors or (for images composed of
+pixels) generic paint programs or (for drawings) some widely available
+drawing editor, and that is suitable for input to text formatters or
+for automatic translation to a variety of formats suitable for input
+to text formatters.  A copy made in an otherwise Transparent file
+format whose markup, or absence of markup, has been arranged to thwart
+or discourage subsequent modification by readers is not Transparent.
+An image format is not Transparent if used for any substantial amount
+of text.  A copy that is not ``Transparent'' is called ``Opaque''.
+
+Examples of suitable formats for Transparent copies include plain
+ASCII without markup, Texinfo input format, La@TeX{} input
+format, SGML or XML using a publicly available
+DTD, and standard-conforming simple HTML,
+PostScript or PDF designed for human modification.  Examples
+of transparent image formats include PNG, XCF and
+JPG@.  Opaque formats include proprietary formats that can be
+read and edited only by proprietary word processors, SGML or
+XML for which the DTD and/or processing tools are
+not generally available, and the machine-generated HTML,
+PostScript or PDF produced by some word processors for
+output purposes only.
+
+The ``Title Page'' means, for a printed book, the title page itself,
+plus such following pages as are needed to hold, legibly, the material
+this License requires to appear in the title page.  For works in
+formats which do not have any title page as such, ``Title Page'' means
+the text near the most prominent appearance of the work's title,
+preceding the beginning of the body of the text.
+
+The ``publisher'' means any person or entity that distributes copies
+of the Document to the public.
+
+A section ``Entitled XYZ'' means a named subunit of the Document whose
+title either is precisely XYZ or contains XYZ in parentheses following
+text that translates XYZ in another language.  (Here XYZ stands for a
+specific section name mentioned below, such as ``Acknowledgements'',
+``Dedications'', ``Endorsements'', or ``History''.)  To ``Preserve the Title''
+of such a section when you modify the Document means that it remains a
+section ``Entitled XYZ'' according to this definition.
+
+The Document may include Warranty Disclaimers next to the notice which
+states that this License applies to the Document.  These Warranty
+Disclaimers are considered to be included by reference in this
+License, but only as regards disclaiming warranties: any other
+implication that these Warranty Disclaimers may have is void and has
+no effect on the meaning of this License.
+
+@item
+VERBATIM COPYING
+
+You may copy and distribute the Document in any medium, either
+commercially or noncommercially, provided that this License, the
+copyright notices, and the license notice saying this License applies
+to the Document are reproduced in all copies, and that you add no other
+conditions whatsoever to those of this License.  You may not use
+technical measures to obstruct or control the reading or further
+copying of the copies you make or distribute.  However, you may accept
+compensation in exchange for copies.  If you distribute a large enough
+number of copies you must also follow the conditions in section 3.
+
+You may also lend copies, under the same conditions stated above, and
+you may publicly display copies.
+
+@item
+COPYING IN QUANTITY
+
+If you publish printed copies (or copies in media that commonly have
+printed covers) of the Document, numbering more than 100, and the
+Document's license notice requires Cover Texts, you must enclose the
+copies in covers that carry, clearly and legibly, all these Cover
+Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
+the back cover.  Both covers must also clearly and legibly identify
+you as the publisher of these copies.  The front cover must present
+the full title with all words of the title equally prominent and
+visible.  You may add other material on the covers in addition.
+Copying with changes limited to the covers, as long as they preserve
+the title of the Document and satisfy these conditions, can be treated
+as verbatim copying in other respects.
+
+If the required texts for either cover are too voluminous to fit
+legibly, you should put the first ones listed (as many as fit
+reasonably) on the actual cover, and continue the rest onto adjacent
+pages.
+
+If you publish or distribute Opaque copies of the Document numbering
+more than 100, you must either include a machine-readable Transparent
+copy along with each Opaque copy, or state in or with each Opaque copy
+a computer-network location from which the general network-using
+public has access to download using public-standard network protocols
+a complete Transparent copy of the Document, free of added material.
+If you use the latter option, you must take reasonably prudent steps,
+when you begin distribution of Opaque copies in quantity, to ensure
+that this Transparent copy will remain thus accessible at the stated
+location until at least one year after the last time you distribute an
+Opaque copy (directly or through your agents or retailers) of that
+edition to the public.
+
+It is requested, but not required, that you contact the authors of the
+Document well before redistributing any large number of copies, to give
+them a chance to provide you with an updated version of the Document.
+
+@item
+MODIFICATIONS
+
+You may copy and distribute a Modified Version of the Document under
+the conditions of sections 2 and 3 above, provided that you release
+the Modified Version under precisely this License, with the Modified
+Version filling the role of the Document, thus licensing distribution
+and modification of the Modified Version to whoever possesses a copy
+of it.  In addition, you must do these things in the Modified Version:
+
+@enumerate A
+@item
+Use in the Title Page (and on the covers, if any) a title distinct
+from that of the Document, and from those of previous versions
+(which should, if there were any, be listed in the History section
+of the Document).  You may use the same title as a previous version
+if the original publisher of that version gives permission.
+
+@item
+List on the Title Page, as authors, one or more persons or entities
+responsible for authorship of the modifications in the Modified
+Version, together with at least five of the principal authors of the
+Document (all of its principal authors, if it has fewer than five),
+unless they release you from this requirement.
+
+@item
+State on the Title page the name of the publisher of the
+Modified Version, as the publisher.
+
+@item
+Preserve all the copyright notices of the Document.
+
+@item
+Add an appropriate copyright notice for your modifications
+adjacent to the other copyright notices.
+
+@item
+Include, immediately after the copyright notices, a license notice
+giving the public permission to use the Modified Version under the
+terms of this License, in the form shown in the Addendum below.
+
+@item
+Preserve in that license notice the full lists of Invariant Sections
+and required Cover Texts given in the Document's license notice.
+
+@item
+Include an unaltered copy of this License.
+
+@item
+Preserve the section Entitled ``History'', Preserve its Title, and add
+to it an item stating at least the title, year, new authors, and
+publisher of the Modified Version as given on the Title Page.  If
+there is no section Entitled ``History'' in the Document, create one
+stating the title, year, authors, and publisher of the Document as
+given on its Title Page, then add an item describing the Modified
+Version as stated in the previous sentence.
+
+@item
+Preserve the network location, if any, given in the Document for
+public access to a Transparent copy of the Document, and likewise
+the network locations given in the Document for previous versions
+it was based on.  These may be placed in the ``History'' section.
+You may omit a network location for a work that was published at
+least four years before the Document itself, or if the original
+publisher of the version it refers to gives permission.
+
+@item
+For any section Entitled ``Acknowledgements'' or ``Dedications'', Preserve
+the Title of the section, and preserve in the section all the
+substance and tone of each of the contributor acknowledgements and/or
+dedications given therein.
+
+@item
+Preserve all the Invariant Sections of the Document,
+unaltered in their text and in their titles.  Section numbers
+or the equivalent are not considered part of the section titles.
+
+@item
+Delete any section Entitled ``Endorsements''.  Such a section
+may not be included in the Modified Version.
+
+@item
+Do not retitle any existing section to be Entitled ``Endorsements'' or
+to conflict in title with any Invariant Section.
+
+@item
+Preserve any Warranty Disclaimers.
+@end enumerate
+
+If the Modified Version includes new front-matter sections or
+appendices that qualify as Secondary Sections and contain no material
+copied from the Document, you may at your option designate some or all
+of these sections as invariant.  To do this, add their titles to the
+list of Invariant Sections in the Modified Version's license notice.
+These titles must be distinct from any other section titles.
+
+You may add a section Entitled ``Endorsements'', provided it contains
+nothing but endorsements of your Modified Version by various
+parties---for example, statements of peer review or that the text has
+been approved by an organization as the authoritative definition of a
+standard.
+
+You may add a passage of up to five words as a Front-Cover Text, and a
+passage of up to 25 words as a Back-Cover Text, to the end of the list
+of Cover Texts in the Modified Version.  Only one passage of
+Front-Cover Text and one of Back-Cover Text may be added by (or
+through arrangements made by) any one entity.  If the Document already
+includes a cover text for the same cover, previously added by you or
+by arrangement made by the same entity you are acting on behalf of,
+you may not add another; but you may replace the old one, on explicit
+permission from the previous publisher that added the old one.
+
+The author(s) and publisher(s) of the Document do not by this License
+give permission to use their names for publicity for or to assert or
+imply endorsement of any Modified Version.
+
+@item
+COMBINING DOCUMENTS
+
+You may combine the Document with other documents released under this
+License, under the terms defined in section 4 above for modified
+versions, provided that you include in the combination all of the
+Invariant Sections of all of the original documents, unmodified, and
+list them all as Invariant Sections of your combined work in its
+license notice, and that you preserve all their Warranty Disclaimers.
+
+The combined work need only contain one copy of this License, and
+multiple identical Invariant Sections may be replaced with a single
+copy.  If there are multiple Invariant Sections with the same name but
+different contents, make the title of each such section unique by
+adding at the end of it, in parentheses, the name of the original
+author or publisher of that section if known, or else a unique number.
+Make the same adjustment to the section titles in the list of
+Invariant Sections in the license notice of the combined work.
+
+In the combination, you must combine any sections Entitled ``History''
+in the various original documents, forming one section Entitled
+``History''; likewise combine any sections Entitled ``Acknowledgements'',
+and any sections Entitled ``Dedications''.  You must delete all
+sections Entitled ``Endorsements.''
+
+@item
+COLLECTIONS OF DOCUMENTS
+
+You may make a collection consisting of the Document and other documents
+released under this License, and replace the individual copies of this
+License in the various documents with a single copy that is included in
+the collection, provided that you follow the rules of this License for
+verbatim copying of each of the documents in all other respects.
+
+You may extract a single document from such a collection, and distribute
+it individually under this License, provided you insert a copy of this
+License into the extracted document, and follow this License in all
+other respects regarding verbatim copying of that document.
+
+@item
+AGGREGATION WITH INDEPENDENT WORKS
+
+A compilation of the Document or its derivatives with other separate
+and independent documents or works, in or on a volume of a storage or
+distribution medium, is called an ``aggregate'' if the copyright
+resulting from the compilation is not used to limit the legal rights
+of the compilation's users beyond what the individual works permit.
+When the Document is included in an aggregate, this License does not
+apply to the other works in the aggregate which are not themselves
+derivative works of the Document.
+
+If the Cover Text requirement of section 3 is applicable to these
+copies of the Document, then if the Document is less than one half of
+the entire aggregate, the Document's Cover Texts may be placed on
+covers that bracket the Document within the aggregate, or the
+electronic equivalent of covers if the Document is in electronic form.
+Otherwise they must appear on printed covers that bracket the whole
+aggregate.
+
+@item
+TRANSLATION
+
+Translation is considered a kind of modification, so you may
+distribute translations of the Document under the terms of section 4.
+Replacing Invariant Sections with translations requires special
+permission from their copyright holders, but you may include
+translations of some or all Invariant Sections in addition to the
+original versions of these Invariant Sections.  You may include a
+translation of this License, and all the license notices in the
+Document, and any Warranty Disclaimers, provided that you also include
+the original English version of this License and the original versions
+of those notices and disclaimers.  In case of a disagreement between
+the translation and the original version of this License or a notice
+or disclaimer, the original version will prevail.
+
+If a section in the Document is Entitled ``Acknowledgements'',
+``Dedications'', or ``History'', the requirement (section 4) to Preserve
+its Title (section 1) will typically require changing the actual
+title.
+
+@item
+TERMINATION
+
+You may not copy, modify, sublicense, or distribute the Document
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense, or distribute it is void, and
+will automatically terminate your rights under this License.
+
+However, if you cease all violation of this License, then your license
+from a particular copyright holder is reinstated (a) provisionally,
+unless and until the copyright holder explicitly and finally
+terminates your license, and (b) permanently, if the copyright holder
+fails to notify you of the violation by some reasonable means prior to
+60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, receipt of a copy of some or all of the same material does
+not give you any rights to use it.
+
+@item
+FUTURE REVISIONS OF THIS LICENSE
+
+The Free Software Foundation may publish new, revised versions
+of the GNU Free Documentation License from time to time.  Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.  See
+@uref{https://www.gnu.org/licenses/}.
+
+Each version of the License is given a distinguishing version number.
+If the Document specifies that a particular numbered version of this
+License ``or any later version'' applies to it, you have the option of
+following the terms and conditions either of that specified version or
+of any later version that has been published (not as a draft) by the
+Free Software Foundation.  If the Document does not specify a version
+number of this License, you may choose any version ever published (not
+as a draft) by the Free Software Foundation.  If the Document
+specifies that a proxy can decide which future versions of this
+License can be used, that proxy's public statement of acceptance of a
+version permanently authorizes you to choose that version for the
+Document.
+
+@item
+RELICENSING
+
+``Massive Multiauthor Collaboration Site'' (or ``MMC Site'') means any
+World Wide Web server that publishes copyrightable works and also
+provides prominent facilities for anybody to edit those works.  A
+public wiki that anybody can edit is an example of such a server.  A
+``Massive Multiauthor Collaboration'' (or ``MMC'') contained in the
+site means any set of copyrightable works thus published on the MMC
+site.
+
+``CC-BY-SA'' means the Creative Commons Attribution-Share Alike 3.0
+license published by Creative Commons Corporation, a not-for-profit
+corporation with a principal place of business in San Francisco,
+California, as well as future copyleft versions of that license
+published by that same organization.
+
+``Incorporate'' means to publish or republish a Document, in whole or
+in part, as part of another Document.
+
+An MMC is ``eligible for relicensing'' if it is licensed under this
+License, and if all works that were first published under this License
+somewhere other than this MMC, and subsequently incorporated in whole
+or in part into the MMC, (1) had no cover texts or invariant sections,
+and (2) were thus incorporated prior to November 1, 2008.
+
+The operator of an MMC Site may republish an MMC contained in the site
+under CC-BY-SA on the same site at any time before August 1, 2009,
+provided the MMC is eligible for relicensing.
+
+@end enumerate
+
+@page
+@heading ADDENDUM: How to use this License for your documents
+
+To use this License in a document you have written, include a copy of
+the License in the document and put the following copyright and
+license notices just after the title page:
+
+@smallexample
+@group
+  Copyright (C)  @var{year}  @var{your name}.
+  Permission is granted to copy, distribute and/or modify this document
+  under the terms of the GNU Free Documentation License, Version 1.3
+  or any later version published by the Free Software Foundation;
+  with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
+  Texts.  A copy of the license is included in the section entitled ``GNU
+  Free Documentation License''.
+@end group
+@end smallexample
+
+If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
+replace the ``with@dots{}Texts.''@: line with this:
+
+@smallexample
+@group
+    with the Invariant Sections being @var{list their titles}, with
+    the Front-Cover Texts being @var{list}, and with the Back-Cover Texts
+    being @var{list}.
+@end group
+@end smallexample
+
+If you have Invariant Sections without Cover Texts, or some other
+combination of the three, merge those two alternatives to suit the
+situation.
+
+If your document contains nontrivial examples of program code, we
+recommend releasing these examples in parallel under your choice of
+free software license, such as the GNU General Public License,
+to permit their use in free software.
+
+@c Local Variables:
+@c ispell-local-pdict: "ispell-dict"
+@c End:
diff --git a/src/grep/doc/grep.in.1 b/src/grep/doc/grep.in.1
new file mode 100644
index 0000000..e8854f2
--- /dev/null
+++ b/src/grep/doc/grep.in.1
@@ -0,0 +1,1402 @@
+.\" GNU grep man page
+.de dT
+.ds Dt \\$2
+..
+.dT Time-stamp: "2019-12-29"
+.\" Update the above date whenever a change to either this file or
+.\" grep.c's 'usage' function results in a nontrivial change to the man page.
+.\" In Emacs, you can update the date by running 'M-x time-stamp'
+.\" after you make a change that you decide is nontrivial.
+.\" It is no big deal to forget to update the date.
+.
+.TH GREP 1 \*(Dt "GNU grep @VERSION@" "User Commands"
+.
+.if !\w|\*(lq| \{\
+.\" groff an-old.tmac does not seem to be in use, so define lq and rq.
+.	ie \n(.g \{\
+.		ds lq \(lq\"
+.		ds rq \(rq\"
+.	\}
+.	el \{\
+.		ds lq ``
+.		ds rq ''
+.	\}
+.\}
+.
+.if !\w|\*(la| \{\
+.\" groff an-ext.tmac does not seem to be in use, so define the parts of
+.\" it that are used below.  For a copy of groff an-ext.tmac, please see:
+.\" https://git.savannah.gnu.org/cgit/groff.git/plain/tmac/an-ext.tmac
+.\" --- Start of lines taken from groff an-ext.tmac
+.
+.\" Check whether we are using grohtml.
+.nr mH 0
+.if \n(.g \
+.  if '\*(.T'html' \
+.    nr mH 1
+.
+.
+.\" Map mono-width fonts to standard fonts for groff's TTY device.
+.if n \{\
+.  do ftr CR R
+.  do ftr CI I
+.  do ftr CB B
+.\}
+.
+.\" groff has glyph entities for angle brackets.
+.ie \n(.g \{\
+.  ds la \(la\"
+.  ds ra \(ra\"
+.\}
+.el \{\
+.  ds la <\"
+.  ds ra >\"
+.  \" groff's man macros control hyphenation with this register.
+.  nr HY 1
+.\}
+.
+.\" Start URL.
+.de UR
+.  ds m1 \\$1\"
+.  nh
+.  if \\n(mH \{\
+.    \" Start diversion in a new environment.
+.    do ev URL-div
+.    do di URL-div
+.  \}
+..
+.
+.
+.\" End URL.
+.de UE
+.  ie \\n(mH \{\
+.    br
+.    di
+.    ev
+.
+.    \" Has there been one or more input lines for the link text?
+.    ie \\n(dn \{\
+.      do HTML-NS "<a href=""\\*(m1"">"
+.      \" Yes, strip off final newline of diversion and emit it.
+.      do chop URL-div
+.      do URL-div
+\c
+.      do HTML-NS </a>
+.    \}
+.    el \
+.      do HTML-NS "<a href=""\\*(m1"">\\*(m1</a>"
+\&\\$*\"
+.  \}
+.  el \
+\\*(la\\*(m1\\*(ra\\$*\"
+.
+.  hy \\n(HY
+..
+.
+.
+.\" Start email address.
+.de MT
+.  ds m1 \\$1\"
+.  nh
+.  if \\n(mH \{\
+.    \" Start diversion in a new environment.
+.    do ev URL-div
+.    do di URL-div
+.  \}
+..
+.
+.
+.\" End email address.
+.de ME
+.  ie \\n(mH \{\
+.    br
+.    di
+.    ev
+.
+.    \" Has there been one or more input lines for the link text?
+.    ie \\n(dn \{\
+.      do HTML-NS "<a href=""mailto:\\*(m1"">"
+.      \" Yes, strip off final newline of diversion and emit it.
+.      do chop URL-div
+.      do URL-div
+\c
+.      do HTML-NS </a>
+.    \}
+.    el \
+.      do HTML-NS "<a href=""mailto:\\*(m1"">\\*(m1</a>"
+\&\\$*\"
+.  \}
+.  el \
+\\*(la\\*(m1\\*(ra\\$*\"
+.
+.  hy \\n(HY
+..
+.\" --- End of lines taken from groff an-ext.tmac
+.\}
+.
+.hy 0
+.
+.SH NAME
+grep, egrep, fgrep \- print lines that match patterns
+.
+.SH SYNOPSIS
+.B grep
+.RI [ OPTION .\|.\|.]\&
+.I PATTERNS
+.RI [ FILE .\|.\|.]
+.br
+.B grep
+.RI [ OPTION .\|.\|.]\&
+.B \-e
+.I PATTERNS
+\&.\|.\|.\&
+.RI [ FILE .\|.\|.]
+.br
+.B grep
+.RI [ OPTION .\|.\|.]\&
+.B \-f
+.I PATTERN_FILE
+\&.\|.\|.\&
+.RI [ FILE .\|.\|.]
+.
+.SH DESCRIPTION
+.B grep
+searches for
+.I PATTERNS
+in each
+.IR FILE .
+.I PATTERNS
+is one or more patterns separated by newline characters, and
+.B grep
+prints each line that matches a pattern.
+Typically
+.I PATTERNS
+should be quoted when
+.B grep
+is used in a shell command.
+.PP
+A
+.I FILE
+of
+.RB "\*(lq" \- "\*(rq"
+stands for standard input.
+If no
+.I FILE
+is given, recursive searches examine the working directory,
+and nonrecursive searches read standard input.
+.PP
+In addition, the variant programs
+.B egrep
+and
+.B fgrep
+are the same as
+.B "grep\ \-E"
+and
+.BR "grep\ \-F" ,
+respectively.
+These variants are deprecated, but are provided for backward compatibility.
+.
+.SH OPTIONS
+.SS "Generic Program Information"
+.TP
+.B \-\^\-help
+Output a usage message and exit.
+.TP
+.BR \-V ", " \-\^\-version
+Output the version number of
+.B grep
+and exit.
+.SS "Pattern Syntax"
+.TP
+.BR \-E ", " \-\^\-extended\-regexp
+Interpret
+.I PATTERNS
+as extended regular expressions (EREs, see below).
+.TP
+.BR \-F ", " \-\^\-fixed\-strings
+Interpret
+.I PATTERNS
+as fixed strings, not regular expressions.
+.TP
+.BR \-G ", " \-\^\-basic\-regexp
+Interpret
+.I PATTERNS
+as basic regular expressions (BREs, see below).
+This is the default.
+.TP
+.BR \-P ", " \-\^\-perl\-regexp
+Interpret I<PATTERNS> as Perl-compatible regular expressions (PCREs).
+This option is experimental when combined with the
+.B \-z
+.RB ( \-\^\-null\-data )
+option, and
+.B "grep \-P"
+may warn of unimplemented features.
+.SS "Matching Control"
+.TP
+.BI \-e " PATTERNS" "\fR,\fP \-\^\-regexp=" PATTERNS
+Use
+.I PATTERNS
+as the patterns.
+If this option is used multiple times or is combined with the
+.B \-f
+.RB ( \-\^\-file )
+option, search for all patterns given.
+This option can be used to protect a pattern beginning with \*(lq\-\*(rq.
+.TP
+.BI \-f " FILE" "\fR,\fP \-\^\-file=" FILE
+Obtain patterns from
+.IR FILE ,
+one per line.
+If this option is used multiple times or is combined with the
+.B \-e
+.RB ( \-\^\-regexp )
+option, search for all patterns given.
+The empty file contains zero patterns, and therefore matches nothing.
+.TP
+.BR \-i ", " \-\^\-ignore\-case
+Ignore case distinctions in patterns and input data,
+so that characters that differ only in case
+match each other.
+.TP
+.B \-\^\-no\-ignore\-case
+Do not ignore case distinctions in patterns and input data.
+This is the default.
+This option is useful for passing to shell scripts that already use
+.BR \-i ,
+to cancel its effects because the two options override each other.
+.TP
+.BR \-v ", " \-\^\-invert\-match
+Invert the sense of matching, to select non-matching lines.
+.TP
+.BR \-w ", " \-\^\-word\-regexp
+Select only those lines containing matches that form whole words.
+The test is that the matching substring must either be at the
+beginning of the line, or preceded by a non-word constituent
+character.
+Similarly, it must be either at the end of the line
+or followed by a non-word constituent character.
+Word-constituent characters are letters, digits, and the underscore.
+This option has no effect if
+.B \-x
+is also specified.
+.TP
+.BR \-x ", " \-\^\-line\-regexp
+Select only those matches that exactly match the whole line.
+For a regular expression pattern, this is like parenthesizing the
+pattern and then surrounding it with
+.B ^
+and
+.BR $ .
+.TP
+.B \-y
+Obsolete synonym for
+.BR \-i .
+.SS "General Output Control"
+.TP
+.BR \-c ", " \-\^\-count
+Suppress normal output; instead print a count of
+matching lines for each input file.
+With the
+.BR \-v ", " \-\^\-invert\-match
+option (see below), count non-matching lines.
+.TP
+.BR \-\^\-color [ =\fIWHEN\fP "], " \-\^\-colour [ =\fIWHEN\fP ]
+Surround the matched (non-empty) strings, matching lines, context lines,
+file names, line numbers, byte offsets, and separators (for fields and
+groups of context lines) with escape sequences to display them in color
+on the terminal.
+The colors are defined by the environment variable
+.BR GREP_COLORS .
+The deprecated environment variable
+.B GREP_COLOR
+is still supported, but its setting does not have priority.
+.I WHEN
+is
+.BR never ", " always ", or " auto .
+.TP
+.BR \-L ", " \-\^\-files\-without\-match
+Suppress normal output; instead print the name
+of each input file from which no output would
+normally have been printed.
+.TP
+.BR \-l ", " \-\^\-files\-with\-matches
+Suppress normal output; instead print
+the name of each input file from which output
+would normally have been printed.
+Scanning each input file stops upon first match.
+.TP
+.BI \-m " NUM" "\fR,\fP \-\^\-max\-count=" NUM
+Stop reading a file after
+.I NUM
+matching lines.
+If the input is standard input from a regular file,
+and
+.I NUM
+matching lines are output,
+.B grep
+ensures that the standard input is positioned to just after the last
+matching line before exiting, regardless of the presence of trailing
+context lines.
+This enables a calling process to resume a search.
+When
+.B grep
+stops after
+.I NUM
+matching lines, it outputs any trailing context lines.
+When the
+.B \-c
+or
+.B \-\^\-count
+option is also used,
+.B grep
+does not output a count greater than
+.IR NUM .
+When the
+.B \-v
+or
+.B \-\^\-invert\-match
+option is also used,
+.B grep
+stops after outputting
+.I NUM
+non-matching lines.
+.TP
+.BR \-o ", " \-\^\-only\-matching
+Print only the matched (non-empty) parts of a matching line,
+with each such part on a separate output line.
+.TP
+.BR \-q ", " \-\^\-quiet ", " \-\^\-silent
+Quiet; do not write anything to standard output.
+Exit immediately with zero status if any match is found,
+even if an error was detected.
+Also see the
+.B \-s
+or
+.B \-\^\-no\-messages
+option.
+.TP
+.BR \-s ", " \-\^\-no\-messages
+Suppress error messages about nonexistent or unreadable files.
+.SS "Output Line Prefix Control"
+.TP
+.BR \-b ", " \-\^\-byte\-offset
+Print the 0-based byte offset within the input file
+before each line of output.
+If
+.B \-o
+.RB ( \-\^\-only\-matching )
+is specified,
+print the offset of the matching part itself.
+.TP
+.BR \-H ", " \-\^\-with\-filename
+Print the file name for each match.
+This is the default when there is more than one file to search.
+This is a GNU extension.
+.TP
+.BR \-h ", " \-\^\-no\-filename
+Suppress the prefixing of file names on output.
+This is the default when there is only one file
+(or only standard input) to search.
+.TP
+.BI \-\^\-label= LABEL
+Display input actually coming from standard input as input coming from file
+.IR LABEL .
+This can be useful for commands that transform a file's contents
+before searching,
+e.g.,
+.BR "gzip \-cd foo.gz | grep \-\^\-label=foo \-H 'some pattern'" .
+See also the
+.B \-H
+option.
+.TP
+.BR \-n ", " \-\^\-line\-number
+Prefix each line of output with the 1-based line number
+within its input file.
+.TP
+.BR \-T ", " \-\^\-initial\-tab
+Make sure that the first character of actual line content lies on a
+tab stop, so that the alignment of tabs looks normal.
+This is useful with options that prefix their output to the actual content:
+.BR \-H , \-n ,
+and
+.BR \-b .
+In order to improve the probability that lines
+from a single file will all start at the same column,
+this also causes the line number and byte offset (if present)
+to be printed in a minimum size field width.
+.TP
+.BR \-Z ", " \-\^\-null
+Output a zero byte (the ASCII
+.B NUL
+character) instead of the character that normally follows a file name.
+For example,
+.B "grep \-lZ"
+outputs a zero byte after each file name instead of the usual newline.
+This option makes the output unambiguous, even in the presence of file
+names containing unusual characters like newlines.
+This option can be used with commands like
+.BR "find \-print0" ,
+.BR "perl \-0" ,
+.BR "sort \-z" ,
+and
+.B "xargs \-0"
+to process arbitrary file names,
+even those that contain newline characters.
+.SS "Context Line Control"
+.TP
+.BI \-A " NUM" "\fR,\fP \-\^\-after\-context=" NUM
+Print
+.I NUM
+lines of trailing context after matching lines.
+Places a line containing a group separator
+.RB ( \-\^\- )
+between contiguous groups of matches.
+With the
+.B \-o
+or
+.B \-\^\-only\-matching
+option, this has no effect and a warning is given.
+.TP
+.BI \-B " NUM" "\fR,\fP \-\^\-before\-context=" NUM
+Print
+.I NUM
+lines of leading context before matching lines.
+Places a line containing a group separator
+.RB ( \-\^\- )
+between contiguous groups of matches.
+With the
+.B \-o
+or
+.B \-\^\-only\-matching
+option, this has no effect and a warning is given.
+.TP
+.BI \-C " NUM" "\fR,\fP \-" NUM "\fR,\fP \-\^\-context=" NUM
+Print
+.I NUM
+lines of output context.
+Places a line containing a group separator
+.RB ( \-\^\- )
+between contiguous groups of matches.
+With the
+.B \-o
+or
+.B \-\^\-only\-matching
+option, this has no effect and a warning is given.
+.TP
+.BI \-\^\-group\-separator= SEP
+When
+.BR \-A ,
+.BR \-B ,
+or
+.B \-C
+are in use, print
+.I SEP
+instead of
+.B \-\^\-
+between groups of lines.
+.TP
+.B \-\^\-no\-group\-separator
+When
+.BR \-A ,
+.BR \-B ,
+or
+.B \-C
+are in use, do not print a separator between groups of lines.
+.SS "File and Directory Selection"
+.TP
+.BR \-a ", " \-\^\-text
+Process a binary file as if it were text; this is equivalent to the
+.B \-\^\-binary\-files=text
+option.
+.TP
+.BI \-\^\-binary\-files= TYPE
+If a file's data or metadata
+indicate that the file contains binary data,
+assume that the file is of type
+.IR TYPE .
+Non-text bytes indicate binary data; these are either output bytes that are
+improperly encoded for the current locale, or null input bytes when the
+.B \-z
+option is not given.
+.IP
+By default,
+.I TYPE
+is
+.BR binary ,
+and
+.B grep
+suppresses output after null input binary data is discovered,
+and suppresses output lines that contain improperly encoded data.
+When some output is suppressed,
+.B grep
+follows any output
+with a one-line message saying that a binary file matches.
+.IP
+If
+.I TYPE
+is
+.BR without\-match ,
+when
+.B grep
+discovers null input binary data it assumes that the rest of the file
+does not match; this is equivalent to the
+.B \-I
+option.
+.IP
+If
+.I TYPE
+is
+.BR text ,
+.B grep
+processes a binary file as if it were text; this is equivalent to the
+.B \-a
+option.
+.IP
+When
+.I type
+is
+.BR binary ,
+.B grep
+may treat non-text bytes as line terminators even without the
+.B \-z
+option.  This means choosing
+.B binary
+versus
+.B text
+can affect whether a pattern matches a file.  For
+example, when
+.I type
+is
+.B binary
+the pattern
+.B q$ might
+match
+.B q
+immediately followed by a null byte, even though this
+is not matched when
+.I type
+is
+.BR text .
+Conversely, when
+.I type
+is
+.B binary
+the pattern
+.B .\&
+(period) might not match a null byte.
+.IP
+.I Warning:
+The
+.B \-a
+option might output binary garbage,
+which can have nasty side effects if the output is a terminal and if the
+terminal driver interprets some of it as commands.
+On the other hand, when reading files whose text encodings are
+unknown, it can be helpful to use
+.B \-a
+or to set
+.B LC_ALL='C'
+in the environment, in order to find more matches even if the matches
+are unsafe for direct display.
+.TP
+.BI \-D " ACTION" "\fR,\fP \-\^\-devices=" ACTION
+If an input file is a device, FIFO or socket, use
+.I ACTION
+to process it.
+By default,
+.I ACTION
+is
+.BR read ,
+which means that devices are read just as if they were ordinary files.
+If
+.I ACTION
+is
+.BR skip ,
+devices are silently skipped.
+.TP
+.BI \-d " ACTION" "\fR,\fP \-\^\-directories=" ACTION
+If an input file is a directory, use
+.I ACTION
+to process it.
+By default,
+.I ACTION
+is
+.BR read ,
+i.e., read directories just as if they were ordinary files.
+If
+.I ACTION
+is
+.BR skip ,
+silently skip directories.
+If
+.I ACTION
+is
+.BR recurse ,
+read all files under each directory, recursively,
+following symbolic links only if they are on the command line.
+This is equivalent to the
+.B \-r
+option.
+.TP
+.BI \-\^\-exclude= GLOB
+Skip any command-line file with a name suffix that matches the pattern
+.IR GLOB ,
+using wildcard matching; a name suffix is either the whole
+name, or a trailing part that starts with a non-slash character
+immediately after a slash
+.RB ( / )
+in the name.
+When searching recursively, skip any subfile whose base name matches
+.IR GLOB ;
+the base name is the part after the last slash.
+A pattern can use
+.BR * ,
+.BR ? ,
+and
+.BR [ .\|.\|. ]\&
+as wildcards, and
+.B \e
+to quote a wildcard or backslash character literally.
+.TP
+.BI \-\^\-exclude\-from= FILE
+Skip files whose base name matches any of the file-name globs read from
+.I FILE
+(using wildcard matching as described under
+.BR \-\^\-exclude ).
+.TP
+.BI \-\^\-exclude\-dir= GLOB
+Skip any command-line directory with a name suffix that matches the
+pattern
+.IR GLOB .
+When searching recursively, skip any subdirectory
+whose base name matches
+.IR GLOB .
+Ignore any redundant trailing slashes in
+.IR GLOB .
+.TP
+.BR \-I
+Process a binary file as if it did not contain matching data; this is
+equivalent to the
+.B \-\^\-binary\-files=without\-match
+option.
+.TP
+.BI \-\^\-include= GLOB
+Search only files whose base name matches
+.I GLOB
+(using wildcard matching as described under
+.BR \-\^\-exclude ).
+If contradictory
+.B \-\^\-include
+and
+.B \-\^\-exclude
+options are given, the last matching one wins.
+If no
+.B \-\^\-include
+or
+.B \-\^\-exclude
+options match, a file is included unless the first such option is
+.BR \-\^\-include .
+.TP
+.BR \-r ", " \-\^\-recursive
+Read all files under each directory, recursively,
+following symbolic links only if they are on the command line.
+Note that if no file operand is given, B<grep> searches the working directory.
+This is equivalent to the
+.B "\-d recurse"
+option.
+.TP
+.BR \-R ", " \-\^\-dereference\-recursive
+Read all files under each directory, recursively.
+Follow all symbolic links, unlike
+.BR \-r .
+.SS "Other Options"
+.TP
+.B \-\^\-line\-buffered
+Use line buffering on output.
+This can cause a performance penalty.
+.TP
+.BR \-U ", " \-\^\-binary
+Treat the file(s) as binary.
+By default, under MS-DOS and MS-Windows,
+.BR grep
+guesses whether a file is text or binary as described for the
+.B \-\^\-binary\-files
+option.
+If
+.BR grep
+decides the file is a text file, it strips the CR characters from the
+original file contents (to make regular expressions with
+.B ^
+and
+.B $
+work correctly).
+Specifying
+.B \-U
+overrules this guesswork, causing all files to be read and passed to the
+matching mechanism verbatim; if the file is a text file with CR/LF
+pairs at the end of each line, this will cause some regular
+expressions to fail.
+This option has no effect on platforms
+other than MS-DOS and MS-Windows.
+.TP
+.BR \-z ", " \-\^\-null\-data
+Treat input and output data as sequences of lines, each terminated by
+a zero byte (the ASCII NUL character) instead of a newline.
+Like the
+.B \-Z
+or
+.B \-\^\-null
+option, this option can be used with commands like
+.B sort -z
+to process arbitrary file names.
+.
+.SH "REGULAR EXPRESSIONS"
+A regular expression is a pattern that describes a set of strings.
+Regular expressions are constructed analogously to arithmetic
+expressions, by using various operators to combine smaller expressions.
+.PP
+.B grep
+understands three different versions of regular expression syntax:
+\*(lqbasic\*(rq (BRE), \*(lqextended\*(rq (ERE) and \*(lqperl\*(rq (PCRE).
+In GNU
+.B grep
+there is no difference in available functionality between basic and
+extended syntaxes.
+In other implementations, basic regular expressions are less powerful.
+The following description applies to extended regular expressions;
+differences for basic regular expressions are summarized afterwards.
+Perl-compatible regular expressions give additional functionality, and are
+documented in B<pcresyntax>(3) and B<pcrepattern>(3), but work only if
+PCRE support is enabled.
+.PP
+The fundamental building blocks are the regular expressions
+that match a single character.
+Most characters, including all letters and digits,
+are regular expressions that match themselves.
+Any meta-character with special meaning
+may be quoted by preceding it with a backslash.
+.PP
+The period
+.B .\&
+matches any single character.
+It is unspecified whether it matches an encoding error.
+.SS "Character Classes and Bracket Expressions"
+A
+.I "bracket expression"
+is a list of characters enclosed by
+.B [
+and
+.BR ] .
+It matches any single
+character in that list.
+If the first character of the list
+is the caret
+.B ^
+then it matches any character
+.I not
+in the list; it is unspecified whether it matches an encoding error.
+For example, the regular expression
+.B [0123456789]
+matches any single digit.
+.PP
+Within a bracket expression, a
+.I "range expression"
+consists of two characters separated by a hyphen.
+It matches any single character that sorts between the two characters,
+inclusive, using the locale's collating sequence and character set.
+For example, in the default C locale,
+.B [a\-d]
+is equivalent to
+.BR [abcd] .
+Many locales sort characters in dictionary order, and in these locales
+.B [a\-d]
+is typically not equivalent to
+.BR [abcd] ;
+it might be equivalent to
+.BR [aBbCcDd] ,
+for example.
+To obtain the traditional interpretation of bracket expressions,
+you can use the C locale by setting the
+.B LC_ALL
+environment variable to the value
+.BR C .
+.PP
+Finally, certain named classes of characters are predefined within
+bracket expressions, as follows.
+Their names are self explanatory, and they are
+.BR [:alnum:] ,
+.BR [:alpha:] ,
+.BR [:blank:] ,
+.BR [:cntrl:] ,
+.BR [:digit:] ,
+.BR [:graph:] ,
+.BR [:lower:] ,
+.BR [:print:] ,
+.BR [:punct:] ,
+.BR [:space:] ,
+.BR [:upper:] ,
+and
+.BR [:xdigit:] .
+For example,
+.B [[:alnum:]]
+means the character class of numbers and
+letters in the current locale.
+In the C locale and ASCII
+character set encoding, this is the same as
+.BR [0\-9A\-Za\-z] .
+(Note that the brackets in these class names are part of the symbolic
+names, and must be included in addition to the brackets delimiting
+the bracket expression.)
+Most meta-characters lose their special meaning inside bracket expressions.
+To include a literal
+.B ]
+place it first in the list.
+Similarly, to include a literal
+.B ^
+place it anywhere but first.
+Finally, to include a literal
+.B \-
+place it last.
+.SS Anchoring
+The caret
+.B ^
+and the dollar sign
+.B $
+are meta-characters that respectively match the empty string at the
+beginning and end of a line.
+.SS "The Backslash Character and Special Expressions"
+The symbols
+.B \e<
+and
+.B \e>
+respectively match the empty string at the beginning and end of a word.
+The symbol
+.B \eb
+matches the empty string at the edge of a word,
+and
+.B \eB
+matches the empty string provided it's
+.I not
+at the edge of a word.
+The symbol
+.B \ew
+is a synonym for
+.B [_[:alnum:]]
+and
+.B \eW
+is a synonym for
+.BR [^_[:alnum:]] .
+.SS Repetition
+A regular expression may be followed by one of several repetition operators:
+.PD 0
+.TP
+.B ?
+The preceding item is optional and matched at most once.
+.TP
+.B *
+The preceding item will be matched zero or more times.
+.TP
+.B +
+The preceding item will be matched one or more times.
+.TP
+.BI { n }
+The preceding item is matched exactly
+.I n
+times.
+.TP
+.BI { n ,}
+The preceding item is matched
+.I n
+or more times.
+.TP
+.BI {, m }
+The preceding item is matched at most
+.I m
+times.
+This is a GNU extension.
+.TP
+.BI { n , m }
+The preceding item is matched at least
+.I n
+times, but not more than
+.I m
+times.
+.PD
+.SS Concatenation
+Two regular expressions may be concatenated; the resulting
+regular expression matches any string formed by concatenating
+two substrings that respectively match the concatenated
+expressions.
+.SS Alternation
+Two regular expressions may be joined by the infix operator
+.BR | ;
+the resulting regular expression matches any string matching
+either alternate expression.
+.SS Precedence
+Repetition takes precedence over concatenation, which in turn
+takes precedence over alternation.
+A whole expression may be enclosed in parentheses
+to override these precedence rules and form a subexpression.
+.SS "Back-references and Subexpressions"
+The back-reference
+.BI \e n\c
+\&, where
+.I n
+is a single digit, matches the substring
+previously matched by the
+.IR n th
+parenthesized subexpression of the regular expression.
+.SS "Basic vs Extended Regular Expressions"
+In basic regular expressions the meta-characters
+.BR ? ,
+.BR + ,
+.BR { ,
+.BR | ,
+.BR ( ,
+and
+.BR )
+lose their special meaning; instead use the backslashed
+versions
+.BR \e? ,
+.BR \e+ ,
+.BR \e{ ,
+.BR \e| ,
+.BR \e( ,
+and
+.BR \e) .
+.
+.SH "EXIT STATUS"
+Normally the exit status is 0 if a line is selected, 1 if no lines
+were selected, and 2 if an error occurred.  However, if the
+.B \-q
+or
+.B \-\^\-quiet
+or
+.B \-\^\-silent
+is used and a line is selected, the exit status is 0 even if an error
+occurred.
+.
+.SH ENVIRONMENT
+The behavior of
+.B grep
+is affected by the following environment variables.
+.PP
+The locale for category
+.BI LC_ foo
+is specified by examining the three environment variables
+.BR LC_ALL ,
+.BR LC_\fIfoo\fP ,
+.BR LANG ,
+in that order.
+The first of these variables that is set specifies the locale.
+For example, if
+.B LC_ALL
+is not set, but
+.B LC_MESSAGES
+is set to
+.BR pt_BR ,
+then the Brazilian Portuguese locale is used for the
+.B LC_MESSAGES
+category.
+The C locale is used if none of these environment variables are set,
+if the locale catalog is not installed, or if
+.B grep
+was not compiled with national language support (NLS).
+The shell command
+.B "locale \-a"
+lists locales that are currently available.
+.TP
+.B GREP_COLOR
+This variable specifies the color used to highlight matched (non-empty) text.
+It is deprecated in favor of
+.BR GREP_COLORS ,
+but still supported.
+The
+.BR mt ,
+.BR ms ,
+and
+.B mc
+capabilities of
+.B GREP_COLORS
+have priority over it.
+It can only specify the color used to highlight
+the matching non-empty text in any matching line
+(a selected line when the
+.B \-v
+command-line option is omitted,
+or a context line when
+.B \-v
+is specified).
+The default is
+.BR 01;31 ,
+which means a bold red foreground text on the terminal's default background.
+.TP
+.B GREP_COLORS
+Specifies the colors and other attributes
+used to highlight various parts of the output.
+Its value is a colon-separated list of capabilities
+that defaults to
+.B ms=01;31:mc=01;31:sl=:cx=:fn=35:ln=32:bn=32:se=36
+with the
+.B rv
+and
+.B ne
+boolean capabilities omitted (i.e., false).
+Supported capabilities are as follows.
+.RS
+.TP
+.B sl=
+SGR substring for whole selected lines
+(i.e.,
+matching lines when the
+.B \-v
+command-line option is omitted,
+or non-matching lines when
+.B \-v
+is specified).
+If however the boolean
+.B rv
+capability
+and the
+.B \-v
+command-line option are both specified,
+it applies to context matching lines instead.
+The default is empty (i.e., the terminal's default color pair).
+.TP
+.B cx=
+SGR substring for whole context lines
+(i.e.,
+non-matching lines when the
+.B \-v
+command-line option is omitted,
+or matching lines when
+.B \-v
+is specified).
+If however the boolean
+.B rv
+capability
+and the
+.B \-v
+command-line option are both specified,
+it applies to selected non-matching lines instead.
+The default is empty (i.e., the terminal's default color pair).
+.TP
+.B rv
+Boolean value that reverses (swaps) the meanings of
+the
+.B sl=
+and
+.B cx=
+capabilities
+when the
+.B \-v
+command-line option is specified.
+The default is false (i.e., the capability is omitted).
+.TP
+.B mt=01;31
+SGR substring for matching non-empty text in any matching line
+(i.e.,
+a selected line when the
+.B \-v
+command-line option is omitted,
+or a context line when
+.B \-v
+is specified).
+Setting this is equivalent to setting both
+.B ms=
+and
+.B mc=
+at once to the same value.
+The default is a bold red text foreground over the current line background.
+.TP
+.B ms=01;31
+SGR substring for matching non-empty text in a selected line.
+(This is only used when the
+.B \-v
+command-line option is omitted.)
+The effect of the
+.B sl=
+(or
+.B cx=
+if
+.BR rv )
+capability remains active when this kicks in.
+The default is a bold red text foreground over the current line background.
+.TP
+.B mc=01;31
+SGR substring for matching non-empty text in a context line.
+(This is only used when the
+.B \-v
+command-line option is specified.)
+The effect of the
+.B cx=
+(or
+.B sl=
+if
+.BR rv )
+capability remains active when this kicks in.
+The default is a bold red text foreground over the current line background.
+.TP
+.B fn=35
+SGR substring for file names prefixing any content line.
+The default is a magenta text foreground over the terminal's default background.
+.TP
+.B ln=32
+SGR substring for line numbers prefixing any content line.
+The default is a green text foreground over the terminal's default background.
+.TP
+.B bn=32
+SGR substring for byte offsets prefixing any content line.
+The default is a green text foreground over the terminal's default background.
+.TP
+.B se=36
+SGR substring for separators that are inserted
+between selected line fields
+.RB ( : ),
+between context line fields,
+.RB ( \- ),
+and between groups of adjacent lines when nonzero context is specified
+.RB ( \-\^\- ).
+The default is a cyan text foreground over the terminal's default background.
+.TP
+.B ne
+Boolean value that prevents clearing to the end of line
+using Erase in Line (EL) to Right
+.RB ( \e33[K )
+each time a colorized item ends.
+This is needed on terminals on which EL is not supported.
+It is otherwise useful on terminals
+for which the
+.B back_color_erase
+.RB ( bce )
+boolean terminfo capability does not apply,
+when the chosen highlight colors do not affect the background,
+or when EL is too slow or causes too much flicker.
+The default is false (i.e., the capability is omitted).
+.PP
+Note that boolean capabilities have no
+.BR = .\|.\|.\&
+part.
+They are omitted (i.e., false) by default and become true when specified.
+.PP
+See the Select Graphic Rendition (SGR) section
+in the documentation of the text terminal that is used
+for permitted values and their meaning as character attributes.
+These substring values are integers in decimal representation
+and can be concatenated with semicolons.
+.B grep
+takes care of assembling the result
+into a complete SGR sequence
+.RB ( \e33[ .\|.\|. m ).
+Common values to concatenate include
+.B 1
+for bold,
+.B 4
+for underline,
+.B 5
+for blink,
+.B 7
+for inverse,
+.B 39
+for default foreground color,
+.B 30
+to
+.B 37
+for foreground colors,
+.B 90
+to
+.B 97
+for 16-color mode foreground colors,
+.B 38;5;0
+to
+.B 38;5;255
+for 88-color and 256-color modes foreground colors,
+.B 49
+for default background color,
+.B 40
+to
+.B 47
+for background colors,
+.B 100
+to
+.B 107
+for 16-color mode background colors, and
+.B 48;5;0
+to
+.B 48;5;255
+for 88-color and 256-color modes background colors.
+.RE
+.TP
+\fBLC_ALL\fP, \fBLC_COLLATE\fP, \fBLANG\fP
+These variables specify the locale for the
+.B LC_COLLATE
+category,
+which determines the collating sequence
+used to interpret range expressions like
+.BR [a\-z] .
+.TP
+\fBLC_ALL\fP, \fBLC_CTYPE\fP, \fBLANG\fP
+These variables specify the locale for the
+.B LC_CTYPE
+category,
+which determines the type of characters,
+e.g., which characters are whitespace.
+This category also determines the character encoding, that is, whether
+text is encoded in UTF-8, ASCII, or some other encoding.  In the C or
+POSIX locale, all characters are encoded as a single byte and every
+byte is a valid character.
+.TP
+\fBLC_ALL\fP, \fBLC_MESSAGES\fP, \fBLANG\fP
+These variables specify the locale for the
+.B LC_MESSAGES
+category,
+which determines the language that
+.B grep
+uses for messages.
+The default C locale uses American English messages.
+.TP
+.B POSIXLY_CORRECT
+If set,
+.B grep
+behaves as POSIX requires; otherwise,
+.B grep
+behaves more like other GNU programs.
+POSIX requires that options that follow file names must be
+treated as file names; by default, such options are permuted to the
+front of the operand list and are treated as options.
+Also, POSIX requires that unrecognized options be diagnosed as
+\*(lqillegal\*(rq, but since they are not really against the law the default
+is to diagnose them as \*(lqinvalid\*(rq.
+.B POSIXLY_CORRECT
+also disables \fB_\fP\fIN\fP\fB_GNU_nonoption_argv_flags_\fP,
+described below.
+.TP
+\fB_\fP\fIN\fP\fB_GNU_nonoption_argv_flags_\fP
+(Here
+.I N
+is
+.BR grep 's
+numeric process ID.)  If the
+.IR i th
+character of this environment variable's value is
+.BR 1 ,
+do not consider the
+.IR i th
+operand of
+.B grep
+to be an option, even if it appears to be one.
+A shell can put this variable in the environment for each command it runs,
+specifying which operands are the results of file name wildcard
+expansion and therefore should not be treated as options.
+This behavior is available only with the GNU C library, and only
+when
+.B POSIXLY_CORRECT
+is not set.
+.
+.SH NOTES
+This man page is maintained only fitfully;
+the full documentation is often more up-to-date.
+.
+.SH COPYRIGHT
+Copyright 1998-2000, 2002, 2005-2021 Free Software Foundation, Inc.
+.PP
+This is free software;
+see the source for copying conditions.
+There is NO warranty;
+not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+.
+.SH BUGS
+.SS "Reporting Bugs"
+Email bug reports to
+.MT bug-grep@gnu.org
+the bug-reporting address
+.ME .
+An
+.UR https://lists.gnu.org/mailman/listinfo/bug-grep
+email archive
+.UE
+and a
+.UR https://debbugs.gnu.org/cgi/pkgreport.cgi?package=grep
+bug tracker
+.UE
+are available.
+.SS "Known Bugs"
+Large repetition counts in the
+.BI { n , m }
+construct may cause
+.B grep
+to use lots of memory.
+In addition,
+certain other obscure regular expressions require exponential time
+and space, and may cause
+.B grep
+to run out of memory.
+.PP
+Back-references are very slow, and may require exponential time.
+.
+.SH EXAMPLE
+The following example outputs the location and contents of any line
+containing \*(lqf\*(rq and ending in \*(lq.c\*(rq,
+within all files in the current directory whose names
+contain \*(lqg\*(rq and end in \*(lq.h\*(rq.
+The
+.B \-n
+option outputs line numbers, the
+.B \-\-
+argument treats expansions of \*(lq*g*.h\*(rq starting with \*(lq\-\*(rq
+as file names not options,
+and the empty file /dev/null causes file names to be output
+even if only one file name happens to be of the form \*(lq*g*.h\*(rq.
+.PP
+.in +2n
+.EX
+$ \fBgrep\fP \-n \-\- 'f.*\e.c$' *g*.h /dev/null
+argmatch.h:1:/* definitions and prototypes for argmatch.c
+.EE
+.in
+.PP
+The only line that matches is line 1 of argmatch.h.
+Note that the regular expression syntax used in the pattern differs
+from the globbing syntax that the shell uses to match file names.
+.
+.SH "SEE ALSO"
+.SS "Regular Manual Pages"
+.BR awk (1),
+.BR cmp (1),
+.BR diff (1),
+.BR find (1),
+.BR perl (1),
+.BR sed (1),
+.BR sort (1),
+.BR xargs (1),
+.BR read (2),
+.BR pcre (3),
+.BR pcresyntax (3),
+.BR pcrepattern (3),
+.BR terminfo (5),
+.BR glob (7),
+.BR regex (7)
+.SS "Full Documentation"
+A
+.UR https://www.gnu.org/software/grep/manual/
+complete manual
+.UE
+is available.
+If the
+.B info
+and
+.B grep
+programs are properly installed at your site, the command
+.IP
+.B info grep
+.PP
+should give you access to the complete manual.
+.
+.\" Work around problems with some troff -man implementations.
+.br
+.
+.\" Format for Emacs-maintained Dt string defined at this file's start.
+.\" Local variables:
+.\" time-stamp-format: "%:y-%02m-%02d"
+.\" End:
diff --git a/src/grep/doc/grep.info b/src/grep/doc/grep.info
new file mode 100644
index 0000000..9e1a4bd
--- /dev/null
+++ b/src/grep/doc/grep.info
@@ -0,0 +1,2567 @@
+This is grep.info, produced by makeinfo version 6.8 from grep.texi.
+
+This manual is for ‘grep’, a pattern matching engine.
+
+   Copyright © 1999–2002, 2005, 2008–2021 Free Software Foundation, Inc.
+
+     Permission is granted to copy, distribute and/or modify this
+     document under the terms of the GNU Free Documentation License,
+     Version 1.3 or any later version published by the Free Software
+     Foundation; with no Invariant Sections, with no Front-Cover Texts,
+     and with no Back-Cover Texts. A copy of the license is included in
+     the section entitled “GNU Free Documentation License�.
+INFO-DIR-SECTION Text creation and manipulation
+START-INFO-DIR-ENTRY
+* grep: (grep).                 Print lines that match patterns.
+END-INFO-DIR-ENTRY
+
+
+File: grep.info,  Node: Top,  Next: Introduction,  Up: (dir)
+
+grep
+****
+
+‘grep’ prints lines that contain a match for one or more patterns.
+
+   This manual is for version 3.7 of GNU Grep.
+
+   This manual is for ‘grep’, a pattern matching engine.
+
+   Copyright © 1999–2002, 2005, 2008–2021 Free Software Foundation, Inc.
+
+     Permission is granted to copy, distribute and/or modify this
+     document under the terms of the GNU Free Documentation License,
+     Version 1.3 or any later version published by the Free Software
+     Foundation; with no Invariant Sections, with no Front-Cover Texts,
+     and with no Back-Cover Texts.  A copy of the license is included in
+     the section entitled “GNU Free Documentation License�.
+
+* Menu:
+
+* Introduction::                Introduction.
+* Invoking::                    Command-line options, environment, exit status.
+* Regular Expressions::         Regular Expressions.
+* Usage::                       Examples.
+* Performance::                 Performance tuning.
+* Reporting Bugs::              Reporting Bugs.
+* Copying::                     License terms for this manual.
+* Index::                       Combined index.
+
+
+File: grep.info,  Node: Introduction,  Next: Invoking,  Prev: Top,  Up: Top
+
+1 Introduction
+**************
+
+Given one or more patterns, ‘grep’ searches input files for matches to
+the patterns.  When it finds a match in a line, it copies the line to
+standard output (by default), or produces whatever other sort of output
+you have requested with options.
+
+   Though ‘grep’ expects to do the matching on text, it has no limits on
+input line length other than available memory, and it can match
+arbitrary characters within a line.  If the final byte of an input file
+is not a newline, ‘grep’ silently supplies one.  Since newline is also a
+separator for the list of patterns, there is no way to match newline
+characters in a text.
+
+
+File: grep.info,  Node: Invoking,  Next: Regular Expressions,  Prev: Introduction,  Up: Top
+
+2 Invoking ‘grep’
+*****************
+
+The general synopsis of the ‘grep’ command line is
+
+     grep [OPTION...] [PATTERNS] [FILE...]
+
+There can be zero or more OPTION arguments, and zero or more FILE
+arguments.  The PATTERNS argument contains one or more patterns
+separated by newlines, and is omitted when patterns are given via the
+‘-e PATTERNS’ or ‘-f FILE’ options.  Typically PATTERNS should be quoted
+when ‘grep’ is used in a shell command.
+
+* Menu:
+
+* Command-line Options::        Short and long names, grouped by category.
+* Environment Variables::       POSIX, GNU generic, and GNU grep specific.
+* Exit Status::                 Exit status returned by ‘grep’.
+* grep Programs::               ‘grep’ programs.
+
+
+File: grep.info,  Node: Command-line Options,  Next: Environment Variables,  Up: Invoking
+
+2.1 Command-line Options
+========================
+
+‘grep’ comes with a rich set of options: some from POSIX and some being
+GNU extensions.  Long option names are always a GNU extension, even for
+options that are from POSIX specifications.  Options that are specified
+by POSIX, under their short names, are explicitly marked as such to
+facilitate POSIX-portable programming.  A few option names are provided
+for compatibility with older or more exotic implementations.
+
+* Menu:
+
+* Generic Program Information::
+* Matching Control::
+* General Output Control::
+* Output Line Prefix Control::
+* Context Line Control::
+* File and Directory Selection::
+* Other Options::
+
+   Several additional options control which variant of the ‘grep’
+matching engine is used.  *Note grep Programs::.
+
+
+File: grep.info,  Node: Generic Program Information,  Next: Matching Control,  Up: Command-line Options
+
+2.1.1 Generic Program Information
+---------------------------------
+
+‘--help’
+     Print a usage message briefly summarizing the command-line options
+     and the bug-reporting address, then exit.
+
+‘-V’
+‘--version’
+     Print the version number of ‘grep’ to the standard output stream.
+     This version number should be included in all bug reports.
+
+
+File: grep.info,  Node: Matching Control,  Next: General Output Control,  Prev: Generic Program Information,  Up: Command-line Options
+
+2.1.2 Matching Control
+----------------------
+
+‘-e PATTERNS’
+‘--regexp=PATTERNS’
+     Use PATTERNS as one or more patterns; newlines within PATTERNS
+     separate each pattern from the next.  If this option is used
+     multiple times or is combined with the ‘-f’ (‘--file’) option,
+     search for all patterns given.  Typically PATTERNS should be quoted
+     when ‘grep’ is used in a shell command.  (‘-e’ is specified by
+     POSIX.)
+
+‘-f FILE’
+‘--file=FILE’
+     Obtain patterns from FILE, one per line.  If this option is used
+     multiple times or is combined with the ‘-e’ (‘--regexp’) option,
+     search for all patterns given.  The empty file contains zero
+     patterns, and therefore matches nothing.  (‘-f’ is specified by
+     POSIX.)
+
+‘-i’
+‘-y’
+‘--ignore-case’
+     Ignore case distinctions in patterns and input data, so that
+     characters that differ only in case match each other.  Although
+     this is straightforward when letters differ in case only via
+     lowercase-uppercase pairs, the behavior is unspecified in other
+     situations.  For example, uppercase “S� has an unusual lowercase
+     counterpart “ſ� (Unicode character U+017F, LATIN SMALL LETTER LONG
+     S) in many locales, and it is unspecified whether this unusual
+     character matches “S� or “s� even though uppercasing it yields “S�.
+     Another example: the lowercase German letter “ß� (U+00DF, LATIN
+     SMALL LETTER SHARP S) is normally capitalized as the two-character
+     string “SS� but it does not match “SS�, and it might not match the
+     uppercase letter “ẞ� (U+1E9E, LATIN CAPITAL LETTER SHARP S) even
+     though lowercasing the latter yields the former.
+
+     ‘-y’ is an obsolete synonym that is provided for compatibility.
+     (‘-i’ is specified by POSIX.)
+
+‘--no-ignore-case’
+     Do not ignore case distinctions in patterns and input data.  This
+     is the default.  This option is useful for passing to shell scripts
+     that already use ‘-i’, in order to cancel its effects because the
+     two options override each other.
+
+‘-v’
+‘--invert-match’
+     Invert the sense of matching, to select non-matching lines.  (‘-v’
+     is specified by POSIX.)
+
+‘-w’
+‘--word-regexp’
+     Select only those lines containing matches that form whole words.
+     The test is that the matching substring must either be at the
+     beginning of the line, or preceded by a non-word constituent
+     character.  Similarly, it must be either at the end of the line or
+     followed by a non-word constituent character.  Word constituent
+     characters are letters, digits, and the underscore.  This option
+     has no effect if ‘-x’ is also specified.
+
+     Because the ‘-w’ option can match a substring that does not begin
+     and end with word constituents, it differs from surrounding a
+     regular expression with ‘\<’ and ‘\>’.  For example, although ‘grep
+     -w @’ matches a line containing only ‘@’, ‘grep '\<@\>'’ cannot
+     match any line because ‘@’ is not a word constituent.  *Note The
+     Backslash Character and Special Expressions::.
+
+‘-x’
+‘--line-regexp’
+     Select only those matches that exactly match the whole line.  For
+     regular expression patterns, this is like parenthesizing each
+     pattern and then surrounding it with ‘^’ and ‘$’.  (‘-x’ is
+     specified by POSIX.)
+
+
+File: grep.info,  Node: General Output Control,  Next: Output Line Prefix Control,  Prev: Matching Control,  Up: Command-line Options
+
+2.1.3 General Output Control
+----------------------------
+
+‘-c’
+‘--count’
+     Suppress normal output; instead print a count of matching lines for
+     each input file.  With the ‘-v’ (‘--invert-match’) option, count
+     non-matching lines.  (‘-c’ is specified by POSIX.)
+
+‘--color[=WHEN]’
+‘--colour[=WHEN]’
+     Surround the matched (non-empty) strings, matching lines, context
+     lines, file names, line numbers, byte offsets, and separators (for
+     fields and groups of context lines) with escape sequences to
+     display them in color on the terminal.  The colors are defined by
+     the environment variable ‘GREP_COLORS’ and default to
+     ‘ms=01;31:mc=01;31:sl=:cx=:fn=35:ln=32:bn=32:se=36’ for bold red
+     matched text, magenta file names, green line numbers, green byte
+     offsets, cyan separators, and default terminal colors otherwise.
+     The deprecated environment variable ‘GREP_COLOR’ is still
+     supported, but its setting does not have priority; it defaults to
+     ‘01;31’ (bold red) which only covers the color for matched text.
+     WHEN is ‘never’, ‘always’, or ‘auto’.
+
+‘-L’
+‘--files-without-match’
+     Suppress normal output; instead print the name of each input file
+     from which no output would normally have been printed.
+
+‘-l’
+‘--files-with-matches’
+     Suppress normal output; instead print the name of each input file
+     from which output would normally have been printed.  Scanning each
+     input file stops upon first match.  (‘-l’ is specified by POSIX.)
+
+‘-m NUM’
+‘--max-count=NUM’
+     Stop after the first NUM selected lines.  If the input is standard
+     input from a regular file, and NUM selected lines are output,
+     ‘grep’ ensures that the standard input is positioned just after the
+     last selected line before exiting, regardless of the presence of
+     trailing context lines.  This enables a calling process to resume a
+     search.  For example, the following shell script makes use of it:
+
+          while grep -m 1 'PATTERN'
+          do
+            echo xxxx
+          done < FILE
+
+     But the following probably will not work because a pipe is not a
+     regular file:
+
+          # This probably will not work.
+          cat FILE |
+          while grep -m 1 'PATTERN'
+          do
+            echo xxxx
+          done
+
+     When ‘grep’ stops after NUM selected lines, it outputs any trailing
+     context lines.  When the ‘-c’ or ‘--count’ option is also used,
+     ‘grep’ does not output a count greater than NUM.  When the ‘-v’ or
+     ‘--invert-match’ option is also used, ‘grep’ stops after outputting
+     NUM non-matching lines.
+
+‘-o’
+‘--only-matching’
+     Print only the matched (non-empty) parts of matching lines, with
+     each such part on a separate output line.  Output lines use the
+     same delimiters as input, and delimiters are null bytes if ‘-z’
+     (‘--null-data’) is also used (*note Other Options::).
+
+‘-q’
+‘--quiet’
+‘--silent’
+     Quiet; do not write anything to standard output.  Exit immediately
+     with zero status if any match is found, even if an error was
+     detected.  Also see the ‘-s’ or ‘--no-messages’ option.  (‘-q’ is
+     specified by POSIX.)
+
+‘-s’
+‘--no-messages’
+     Suppress error messages about nonexistent or unreadable files.
+     Portability note: unlike GNU ‘grep’, 7th Edition Unix ‘grep’ did
+     not conform to POSIX, because it lacked ‘-q’ and its ‘-s’ option
+     behaved like GNU ‘grep’’s ‘-q’ option.(1)  USG-style ‘grep’ also
+     lacked ‘-q’ but its ‘-s’ option behaved like GNU ‘grep’’s.
+     Portable shell scripts should avoid both ‘-q’ and ‘-s’ and should
+     redirect standard and error output to ‘/dev/null’ instead.  (‘-s’
+     is specified by POSIX.)
+
+   ---------- Footnotes ----------
+
+   (1) Of course, 7th Edition Unix predated POSIX by several years!
+
+
+File: grep.info,  Node: Output Line Prefix Control,  Next: Context Line Control,  Prev: General Output Control,  Up: Command-line Options
+
+2.1.4 Output Line Prefix Control
+--------------------------------
+
+When several prefix fields are to be output, the order is always file
+name, line number, and byte offset, regardless of the order in which
+these options were specified.
+
+‘-b’
+‘--byte-offset’
+     Print the 0-based byte offset within the input file before each
+     line of output.  If ‘-o’ (‘--only-matching’) is specified, print
+     the offset of the matching part itself.
+
+‘-H’
+‘--with-filename’
+     Print the file name for each match.  This is the default when there
+     is more than one file to search.
+
+‘-h’
+‘--no-filename’
+     Suppress the prefixing of file names on output.  This is the
+     default when there is only one file (or only standard input) to
+     search.
+
+‘--label=LABEL’
+     Display input actually coming from standard input as input coming
+     from file LABEL.  This can be useful for commands that transform a
+     file’s contents before searching; e.g.:
+
+          gzip -cd foo.gz | grep --label=foo -H 'some pattern'
+
+‘-n’
+‘--line-number’
+     Prefix each line of output with the 1-based line number within its
+     input file.  (‘-n’ is specified by POSIX.)
+
+‘-T’
+‘--initial-tab’
+     Make sure that the first character of actual line content lies on a
+     tab stop, so that the alignment of tabs looks normal.  This is
+     useful with options that prefix their output to the actual content:
+     ‘-H’, ‘-n’, and ‘-b’.  This may also prepend spaces to output line
+     numbers and byte offsets so that lines from a single file all start
+     at the same column.
+
+‘-Z’
+‘--null’
+     Output a zero byte (the ASCII NUL character) instead of the
+     character that normally follows a file name.  For example, ‘grep
+     -lZ’ outputs a zero byte after each file name instead of the usual
+     newline.  This option makes the output unambiguous, even in the
+     presence of file names containing unusual characters like newlines.
+     This option can be used with commands like ‘find -print0’, ‘perl
+     -0’, ‘sort -z’, and ‘xargs -0’ to process arbitrary file names,
+     even those that contain newline characters.
+
+
+File: grep.info,  Node: Context Line Control,  Next: File and Directory Selection,  Prev: Output Line Prefix Control,  Up: Command-line Options
+
+2.1.5 Context Line Control
+--------------------------
+
+“Context lines� are non-matching lines that are near a matching line.
+They are output only if one of the following options are used.
+Regardless of how these options are set, ‘grep’ never outputs any given
+line more than once.  If the ‘-o’ (‘--only-matching’) option is
+specified, these options have no effect and a warning is given upon
+their use.
+
+‘-A NUM’
+‘--after-context=NUM’
+     Print NUM lines of trailing context after matching lines.
+
+‘-B NUM’
+‘--before-context=NUM’
+     Print NUM lines of leading context before matching lines.
+
+‘-C NUM’
+‘-NUM’
+‘--context=NUM’
+     Print NUM lines of leading and trailing output context.
+
+‘--group-separator=STRING’
+     When ‘-A’, ‘-B’ or ‘-C’ are in use, print STRING instead of ‘--’
+     between groups of lines.
+
+‘--no-group-separator’
+     When ‘-A’, ‘-B’ or ‘-C’ are in use, do not print a separator
+     between groups of lines.
+
+   Here are some points about how ‘grep’ chooses the separator to print
+between prefix fields and line content:
+
+   • Matching lines normally use ‘:’ as a separator between prefix
+     fields and actual line content.
+
+   • Context (i.e., non-matching) lines use ‘-’ instead.
+
+   • When context is not specified, matching lines are simply output one
+     right after another.
+
+   • When context is specified, lines that are adjacent in the input
+     form a group and are output one right after another, while by
+     default a separator appears between non-adjacent groups.
+
+   • The default separator is a ‘--’ line; its presence and appearance
+     can be changed with the options above.
+
+   • Each group may contain several matching lines when they are close
+     enough to each other that two adjacent groups connect and can merge
+     into a single contiguous one.
+
+
+File: grep.info,  Node: File and Directory Selection,  Next: Other Options,  Prev: Context Line Control,  Up: Command-line Options
+
+2.1.6 File and Directory Selection
+----------------------------------
+
+‘-a’
+‘--text’
+     Process a binary file as if it were text; this is equivalent to the
+     ‘--binary-files=text’ option.
+
+‘--binary-files=TYPE’
+     If a file’s data or metadata indicate that the file contains binary
+     data, assume that the file is of type TYPE.  Non-text bytes
+     indicate binary data; these are either output bytes that are
+     improperly encoded for the current locale (*note Environment
+     Variables::), or null input bytes when the ‘-z’ (‘--null-data’)
+     option is not given (*note Other Options::).
+
+     By default, TYPE is ‘binary’, and ‘grep’ suppresses output after
+     null input binary data is discovered, and suppresses output lines
+     that contain improperly encoded data.  When some output is
+     suppressed, ‘grep’ follows any output with a one-line message
+     saying that a binary file matches.
+
+     If TYPE is ‘without-match’, when ‘grep’ discovers null input binary
+     data it assumes that the rest of the file does not match; this is
+     equivalent to the ‘-I’ option.
+
+     If TYPE is ‘text’, ‘grep’ processes binary data as if it were text;
+     this is equivalent to the ‘-a’ option.
+
+     When TYPE is ‘binary’, ‘grep’ may treat non-text bytes as line
+     terminators even without the ‘-z’ (‘--null-data’) option.  This
+     means choosing ‘binary’ versus ‘text’ can affect whether a pattern
+     matches a file.  For example, when TYPE is ‘binary’ the pattern
+     ‘q$’ might match ‘q’ immediately followed by a null byte, even
+     though this is not matched when TYPE is ‘text’.  Conversely, when
+     TYPE is ‘binary’ the pattern ‘.’ (period) might not match a null
+     byte.
+
+     _Warning:_ The ‘-a’ (‘--binary-files=text’) option might output
+     binary garbage, which can have nasty side effects if the output is
+     a terminal and if the terminal driver interprets some of it as
+     commands.  On the other hand, when reading files whose text
+     encodings are unknown, it can be helpful to use ‘-a’ or to set
+     ‘LC_ALL='C'’ in the environment, in order to find more matches even
+     if the matches are unsafe for direct display.
+
+‘-D ACTION’
+‘--devices=ACTION’
+     If an input file is a device, FIFO, or socket, use ACTION to
+     process it.  If ACTION is ‘read’, all devices are read just as if
+     they were ordinary files.  If ACTION is ‘skip’, devices, FIFOs, and
+     sockets are silently skipped.  By default, devices are read if they
+     are on the command line or if the ‘-R’ (‘--dereference-recursive’)
+     option is used, and are skipped if they are encountered recursively
+     and the ‘-r’ (‘--recursive’) option is used.  This option has no
+     effect on a file that is read via standard input.
+
+‘-d ACTION’
+‘--directories=ACTION’
+     If an input file is a directory, use ACTION to process it.  By
+     default, ACTION is ‘read’, which means that directories are read
+     just as if they were ordinary files (some operating systems and
+     file systems disallow this, and will cause ‘grep’ to print error
+     messages for every directory or silently skip them).  If ACTION is
+     ‘skip’, directories are silently skipped.  If ACTION is ‘recurse’,
+     ‘grep’ reads all files under each directory, recursively, following
+     command-line symbolic links and skipping other symlinks; this is
+     equivalent to the ‘-r’ option.
+
+‘--exclude=GLOB’
+     Skip any command-line file with a name suffix that matches the
+     pattern GLOB, using wildcard matching; a name suffix is either the
+     whole name, or a trailing part that starts with a non-slash
+     character immediately after a slash (‘/’) in the name.  When
+     searching recursively, skip any subfile whose base name matches
+     GLOB; the base name is the part after the last slash.  A pattern
+     can use ‘*’, ‘?’, and ‘[’...‘]’  as wildcards, and ‘\’ to quote a
+     wildcard or backslash character literally.
+
+‘--exclude-from=FILE’
+     Skip files whose name matches any of the patterns read from FILE
+     (using wildcard matching as described under ‘--exclude’).
+
+‘--exclude-dir=GLOB’
+     Skip any command-line directory with a name suffix that matches the
+     pattern GLOB.  When searching recursively, skip any subdirectory
+     whose base name matches GLOB.  Ignore any redundant trailing
+     slashes in GLOB.
+
+‘-I’
+     Process a binary file as if it did not contain matching data; this
+     is equivalent to the ‘--binary-files=without-match’ option.
+
+‘--include=GLOB’
+     Search only files whose name matches GLOB, using wildcard matching
+     as described under ‘--exclude’.  If contradictory ‘--include’ and
+     ‘--exclude’ options are given, the last matching one wins.  If no
+     ‘--include’ or ‘--exclude’ options match, a file is included unless
+     the first such option is ‘--include’.
+
+‘-r’
+‘--recursive’
+     For each directory operand, read and process all files in that
+     directory, recursively.  Follow symbolic links on the command line,
+     but skip symlinks that are encountered recursively.  Note that if
+     no file operand is given, grep searches the working directory.
+     This is the same as the ‘--directories=recurse’ option.
+
+‘-R’
+‘--dereference-recursive’
+     For each directory operand, read and process all files in that
+     directory, recursively, following all symbolic links.
+
+
+File: grep.info,  Node: Other Options,  Prev: File and Directory Selection,  Up: Command-line Options
+
+2.1.7 Other Options
+-------------------
+
+‘--’
+     Delimit the option list.  Later arguments, if any, are treated as
+     operands even if they begin with ‘-’.  For example, ‘grep PAT --
+     -file1 file2’ searches for the pattern PAT in the files named
+     ‘-file1’ and ‘file2’.
+
+‘--line-buffered’
+     Use line buffering for standard output, regardless of output
+     device.  By default, standard output is line buffered for
+     interactive devices, and is fully buffered otherwise.  With full
+     buffering, the output buffer is flushed when full; with line
+     buffering, the buffer is also flushed after every output line.  The
+     buffer size is system dependent.
+
+‘-U’
+‘--binary’
+     On platforms that distinguish between text and binary I/O, use the
+     latter when reading and writing files other than the user’s
+     terminal, so that all input bytes are read and written as-is.  This
+     overrides the default behavior where ‘grep’ follows the operating
+     system’s advice whether to use text or binary I/O.  On MS-Windows
+     when ‘grep’ uses text I/O it reads a carriage return–newline pair
+     as a newline and a Control-Z as end-of-file, and it writes a
+     newline as a carriage return–newline pair.
+
+     When using text I/O ‘--byte-offset’ (‘-b’) counts and
+     ‘--binary-files’ heuristics apply to input data after text-I/O
+     processing.  Also, the ‘--binary-files’ heuristics need not agree
+     with the ‘--binary’ option; that is, they may treat the data as
+     text even if ‘--binary’ is given, or vice versa.  *Note File and
+     Directory Selection::.
+
+     This option has no effect on GNU and other POSIX-compatible
+     platforms, which do not distinguish text from binary I/O.
+
+‘-z’
+‘--null-data’
+     Treat input and output data as sequences of lines, each terminated
+     by a zero byte (the ASCII NUL character) instead of a newline.
+     Like the ‘-Z’ or ‘--null’ option, this option can be used with
+     commands like ‘sort -z’ to process arbitrary file names.
+
+
+File: grep.info,  Node: Environment Variables,  Next: Exit Status,  Prev: Command-line Options,  Up: Invoking
+
+2.2 Environment Variables
+=========================
+
+The behavior of ‘grep’ is affected by the following environment
+variables.
+
+   The locale for category ‘LC_FOO’ is specified by examining the three
+environment variables ‘LC_ALL’, ‘LC_FOO’, and ‘LANG’, in that order.
+The first of these variables that is set specifies the locale.  For
+example, if ‘LC_ALL’ is not set, but ‘LC_COLLATE’ is set to ‘pt_BR’,
+then the Brazilian Portuguese locale is used for the ‘LC_COLLATE’
+category.  As a special case for ‘LC_MESSAGES’ only, the environment
+variable ‘LANGUAGE’ can contain a colon-separated list of languages that
+overrides the three environment variables that ordinarily specify the
+‘LC_MESSAGES’ category.  The ‘C’ locale is used if none of these
+environment variables are set, if the locale catalog is not installed,
+or if ‘grep’ was not compiled with national language support (NLS). The
+shell command ‘locale -a’ lists locales that are currently available.
+
+   Many of the environment variables in the following list let you
+control highlighting using Select Graphic Rendition (SGR) commands
+interpreted by the terminal or terminal emulator.  (See the section in
+the documentation of your text terminal for permitted values and their
+meanings as character attributes.)  These substring values are integers
+in decimal representation and can be concatenated with semicolons.
+‘grep’ takes care of assembling the result into a complete SGR sequence
+(‘\33[’...‘m’).  Common values to concatenate include ‘1’ for bold, ‘4’
+for underline, ‘5’ for blink, ‘7’ for inverse, ‘39’ for default
+foreground color, ‘30’ to ‘37’ for foreground colors, ‘90’ to ‘97’ for
+16-color mode foreground colors, ‘38;5;0’ to ‘38;5;255’ for 88-color and
+256-color modes foreground colors, ‘49’ for default background color,
+‘40’ to ‘47’ for background colors, ‘100’ to ‘107’ for 16-color mode
+background colors, and ‘48;5;0’ to ‘48;5;255’ for 88-color and 256-color
+modes background colors.
+
+   The two-letter names used in the ‘GREP_COLORS’ environment variable
+(and some of the others) refer to terminal “capabilities,� the ability
+of a terminal to highlight text, or change its color, and so on.  These
+capabilities are stored in an online database and accessed by the
+‘terminfo’ library.
+
+‘GREP_COLOR’
+     This variable specifies the color used to highlight matched
+     (non-empty) text.  It is deprecated in favor of ‘GREP_COLORS’, but
+     still supported.  The ‘mt’, ‘ms’, and ‘mc’ capabilities of
+     ‘GREP_COLORS’ have priority over it.  It can only specify the color
+     used to highlight the matching non-empty text in any matching line
+     (a selected line when the ‘-v’ command-line option is omitted, or a
+     context line when ‘-v’ is specified).  The default is ‘01;31’,
+     which means a bold red foreground text on the terminal’s default
+     background.
+
+‘GREP_COLORS’
+     This variable specifies the colors and other attributes used to
+     highlight various parts of the output.  Its value is a
+     colon-separated list of ‘terminfo’ capabilities that defaults to
+     ‘ms=01;31:mc=01;31:sl=:cx=:fn=35:ln=32:bn=32:se=36’ with the ‘rv’
+     and ‘ne’ boolean capabilities omitted (i.e., false).  Supported
+     capabilities are as follows.
+
+     ‘sl=’
+          SGR substring for whole selected lines (i.e., matching lines
+          when the ‘-v’ command-line option is omitted, or non-matching
+          lines when ‘-v’ is specified).  If however the boolean ‘rv’
+          capability and the ‘-v’ command-line option are both
+          specified, it applies to context matching lines instead.  The
+          default is empty (i.e., the terminal’s default color pair).
+
+     ‘cx=’
+          SGR substring for whole context lines (i.e., non-matching
+          lines when the ‘-v’ command-line option is omitted, or
+          matching lines when ‘-v’ is specified).  If however the
+          boolean ‘rv’ capability and the ‘-v’ command-line option are
+          both specified, it applies to selected non-matching lines
+          instead.  The default is empty (i.e., the terminal’s default
+          color pair).
+
+     ‘rv’
+          Boolean value that reverses (swaps) the meanings of the ‘sl=’
+          and ‘cx=’ capabilities when the ‘-v’ command-line option is
+          specified.  The default is false (i.e., the capability is
+          omitted).
+
+     ‘mt=01;31’
+          SGR substring for matching non-empty text in any matching line
+          (i.e., a selected line when the ‘-v’ command-line option is
+          omitted, or a context line when ‘-v’ is specified).  Setting
+          this is equivalent to setting both ‘ms=’ and ‘mc=’ at once to
+          the same value.  The default is a bold red text foreground
+          over the current line background.
+
+     ‘ms=01;31’
+          SGR substring for matching non-empty text in a selected line.
+          (This is used only when the ‘-v’ command-line option is
+          omitted.)  The effect of the ‘sl=’ (or ‘cx=’ if ‘rv’)
+          capability remains active when this takes effect.  The default
+          is a bold red text foreground over the current line
+          background.
+
+     ‘mc=01;31’
+          SGR substring for matching non-empty text in a context line.
+          (This is used only when the ‘-v’ command-line option is
+          specified.)  The effect of the ‘cx=’ (or ‘sl=’ if ‘rv’)
+          capability remains active when this takes effect.  The default
+          is a bold red text foreground over the current line
+          background.
+
+     ‘fn=35’
+          SGR substring for file names prefixing any content line.  The
+          default is a magenta text foreground over the terminal’s
+          default background.
+
+     ‘ln=32’
+          SGR substring for line numbers prefixing any content line.
+          The default is a green text foreground over the terminal’s
+          default background.
+
+     ‘bn=32’
+          SGR substring for byte offsets prefixing any content line.
+          The default is a green text foreground over the terminal’s
+          default background.
+
+     ‘se=36’
+          SGR substring for separators that are inserted between
+          selected line fields (‘:’), between context line fields (‘-’),
+          and between groups of adjacent lines when nonzero context is
+          specified (‘--’).  The default is a cyan text foreground over
+          the terminal’s default background.
+
+     ‘ne’
+          Boolean value that prevents clearing to the end of line using
+          Erase in Line (EL) to Right (‘\33[K’) each time a colorized
+          item ends.  This is needed on terminals on which EL is not
+          supported.  It is otherwise useful on terminals for which the
+          ‘back_color_erase’ (‘bce’) boolean ‘terminfo’ capability does
+          not apply, when the chosen highlight colors do not affect the
+          background, or when EL is too slow or causes too much flicker.
+          The default is false (i.e., the capability is omitted).
+
+     Note that boolean capabilities have no ‘=’...  part.  They are
+     omitted (i.e., false) by default and become true when specified.
+
+‘LC_ALL’
+‘LC_COLLATE’
+‘LANG’
+     These variables specify the locale for the ‘LC_COLLATE’ category,
+     which might affect how range expressions like ‘[a-z]’ are
+     interpreted.
+
+‘LC_ALL’
+‘LC_CTYPE’
+‘LANG’
+     These variables specify the locale for the ‘LC_CTYPE’ category,
+     which determines the type of characters, e.g., which characters are
+     whitespace.  This category also determines the character encoding.
+     *Note Character Encoding::.
+
+‘LANGUAGE’
+‘LC_ALL’
+‘LC_MESSAGES’
+‘LANG’
+     These variables specify the locale for the ‘LC_MESSAGES’ category,
+     which determines the language that ‘grep’ uses for messages.  The
+     default ‘C’ locale uses American English messages.
+
+‘POSIXLY_CORRECT’
+     If set, ‘grep’ behaves as POSIX requires; otherwise, ‘grep’ behaves
+     more like other GNU programs.  POSIX requires that options that
+     follow file names must be treated as file names; by default, such
+     options are permuted to the front of the operand list and are
+     treated as options.  Also, ‘POSIXLY_CORRECT’ disables special
+     handling of an invalid bracket expression.  *Note
+     invalid-bracket-expr::.
+
+‘_N_GNU_nonoption_argv_flags_’
+     (Here ‘N’ is ‘grep’’s numeric process ID.) If the Ith character of
+     this environment variable’s value is ‘1’, do not consider the Ith
+     operand of ‘grep’ to be an option, even if it appears to be one.  A
+     shell can put this variable in the environment for each command it
+     runs, specifying which operands are the results of file name
+     wildcard expansion and therefore should not be treated as options.
+     This behavior is available only with the GNU C library, and only
+     when ‘POSIXLY_CORRECT’ is not set.
+
+   The ‘GREP_OPTIONS’ environment variable of ‘grep’ 2.20 and earlier is
+no longer supported, as it caused problems when writing portable
+scripts.  To make arbitrary changes to how ‘grep’ works, you can use an
+alias or script instead.  For example, if ‘grep’ is in the directory
+‘/usr/bin’ you can prepend ‘$HOME/bin’ to your ‘PATH’ and create an
+executable script ‘$HOME/bin/grep’ containing the following:
+
+     #! /bin/sh
+     export PATH=/usr/bin
+     exec grep --color=auto --devices=skip "$@"
+
+
+File: grep.info,  Node: Exit Status,  Next: grep Programs,  Prev: Environment Variables,  Up: Invoking
+
+2.3 Exit Status
+===============
+
+Normally the exit status is 0 if a line is selected, 1 if no lines were
+selected, and 2 if an error occurred.  However, if the ‘-q’ or ‘--quiet’
+or ‘--silent’ option is used and a line is selected, the exit status is
+0 even if an error occurred.  Other ‘grep’ implementations may exit with
+status greater than 2 on error.
+
+
+File: grep.info,  Node: grep Programs,  Prev: Exit Status,  Up: Invoking
+
+2.4 ‘grep’ Programs
+===================
+
+‘grep’ searches the named input files for lines containing a match to
+the given patterns.  By default, ‘grep’ prints the matching lines.  A
+file named ‘-’ stands for standard input.  If no input is specified,
+‘grep’ searches the working directory ‘.’ if given a command-line option
+specifying recursion; otherwise, ‘grep’ searches standard input.  There
+are four major variants of ‘grep’, controlled by the following options.
+
+‘-G’
+‘--basic-regexp’
+     Interpret patterns as basic regular expressions (BREs).  This is
+     the default.
+
+‘-E’
+‘--extended-regexp’
+     Interpret patterns as extended regular expressions (EREs).  (‘-E’
+     is specified by POSIX.)
+
+‘-F’
+‘--fixed-strings’
+     Interpret patterns as fixed strings, not regular expressions.
+     (‘-F’ is specified by POSIX.)
+
+‘-P’
+‘--perl-regexp’
+     Interpret patterns as Perl-compatible regular expressions (PCREs).
+     PCRE support is here to stay, but consider this option experimental
+     when combined with the ‘-z’ (‘--null-data’) option, and note that
+     ‘grep -P’ may warn of unimplemented features.  *Note Other
+     Options::.
+
+   In addition, two variant programs ‘egrep’ and ‘fgrep’ are available.
+‘egrep’ is the same as ‘grep -E’.  ‘fgrep’ is the same as ‘grep -F’.
+Direct invocation as either ‘egrep’ or ‘fgrep’ is deprecated, but is
+provided to allow historical applications that rely on them to run
+unmodified.
+
+
+File: grep.info,  Node: Regular Expressions,  Next: Usage,  Prev: Invoking,  Up: Top
+
+3 Regular Expressions
+*********************
+
+A “regular expression� is a pattern that describes a set of strings.
+Regular expressions are constructed analogously to arithmetic
+expressions, by using various operators to combine smaller expressions.
+‘grep’ understands three different versions of regular expression
+syntax: basic (BRE), extended (ERE), and Perl-compatible (PCRE). In GNU
+‘grep’, there is no difference in available functionality between the
+basic and extended syntaxes.  In other implementations, basic regular
+expressions are less powerful.  The following description applies to
+extended regular expressions; differences for basic regular expressions
+are summarized afterwards.  Perl-compatible regular expressions give
+additional functionality, and are documented in the pcresyntax(3) and
+pcrepattern(3) manual pages, but work only if PCRE is available in the
+system.
+
+* Menu:
+
+* Fundamental Structure::
+* Character Classes and Bracket Expressions::
+* The Backslash Character and Special Expressions::
+* Anchoring::
+* Back-references and Subexpressions::
+* Basic vs Extended::
+* Character Encoding::
+* Matching Non-ASCII::
+
+
+File: grep.info,  Node: Fundamental Structure,  Next: Character Classes and Bracket Expressions,  Up: Regular Expressions
+
+3.1 Fundamental Structure
+=========================
+
+In regular expressions, the characters ‘.?*+{|()[\^$’ are “special
+characters� and have uses described below.  All other characters are
+“ordinary characters�, and each ordinary character is a regular
+expression that matches itself.
+
+   The period ‘.’ matches any single character.  It is unspecified
+whether ‘.’ matches an encoding error.
+
+   A regular expression may be followed by one of several repetition
+operators; the operators beginning with ‘{’ are called “interval
+expressions�.
+
+‘?’
+     The preceding item is optional and is matched at most once.
+
+‘*’
+     The preceding item is matched zero or more times.
+
+‘+’
+     The preceding item is matched one or more times.
+
+‘{N}’
+     The preceding item is matched exactly N times.
+
+‘{N,}’
+     The preceding item is matched N or more times.
+
+‘{,M}’
+     The preceding item is matched at most M times.  This is a GNU
+     extension.
+
+‘{N,M}’
+     The preceding item is matched at least N times, but not more than M
+     times.
+
+   The empty regular expression matches the empty string.  Two regular
+expressions may be concatenated; the resulting regular expression
+matches any string formed by concatenating two substrings that
+respectively match the concatenated expressions.
+
+   Two regular expressions may be joined by the infix operator ‘|’; the
+resulting regular expression matches any string matching either
+alternate expression.
+
+   Repetition takes precedence over concatenation, which in turn takes
+precedence over alternation.  A whole expression may be enclosed in
+parentheses to override these precedence rules and form a subexpression.
+An unmatched ‘)’ matches just itself.
+
+
+File: grep.info,  Node: Character Classes and Bracket Expressions,  Next: The Backslash Character and Special Expressions,  Prev: Fundamental Structure,  Up: Regular Expressions
+
+3.2 Character Classes and Bracket Expressions
+=============================================
+
+A “bracket expression� is a list of characters enclosed by ‘[’ and ‘]’.
+It matches any single character in that list.  If the first character of
+the list is the caret ‘^’, then it matches any character *not* in the
+list, and it is unspecified whether it matches an encoding error.  For
+example, the regular expression ‘[0123456789]’ matches any single digit,
+whereas ‘[^()]’ matches any single character that is not an opening or
+closing parenthesis, and might or might not match an encoding error.
+
+   Within a bracket expression, a “range expression� consists of two
+characters separated by a hyphen.  It matches any single character that
+sorts between the two characters, inclusive.  In the default C locale,
+the sorting sequence is the native character order; for example, ‘[a-d]’
+is equivalent to ‘[abcd]’.  In other locales, the sorting sequence is
+not specified, and ‘[a-d]’ might be equivalent to ‘[abcd]’ or to
+‘[aBbCcDd]’, or it might fail to match any character, or the set of
+characters that it matches might even be erratic.  To obtain the
+traditional interpretation of bracket expressions, you can use the ‘C’
+locale by setting the ‘LC_ALL’ environment variable to the value ‘C’.
+
+   Finally, certain named classes of characters are predefined within
+bracket expressions, as follows.  Their interpretation depends on the
+‘LC_CTYPE’ locale; for example, ‘[[:alnum:]]’ means the character class
+of numbers and letters in the current locale.
+
+‘[:alnum:]’
+     Alphanumeric characters: ‘[:alpha:]’ and ‘[:digit:]’; in the ‘C’
+     locale and ASCII character encoding, this is the same as
+     ‘[0-9A-Za-z]’.
+
+‘[:alpha:]’
+     Alphabetic characters: ‘[:lower:]’ and ‘[:upper:]’; in the ‘C’
+     locale and ASCII character encoding, this is the same as
+     ‘[A-Za-z]’.
+
+‘[:blank:]’
+     Blank characters: space and tab.
+
+‘[:cntrl:]’
+     Control characters.  In ASCII, these characters have octal codes
+     000 through 037, and 177 (DEL). In other character sets, these are
+     the equivalent characters, if any.
+
+‘[:digit:]’
+     Digits: ‘0 1 2 3 4 5 6 7 8 9’.
+
+‘[:graph:]’
+     Graphical characters: ‘[:alnum:]’ and ‘[:punct:]’.
+
+‘[:lower:]’
+     Lower-case letters; in the ‘C’ locale and ASCII character encoding,
+     this is ‘a b c d e f g h i j k l m n o p q r s t u v w x y z’.
+
+‘[:print:]’
+     Printable characters: ‘[:alnum:]’, ‘[:punct:]’, and space.
+
+‘[:punct:]’
+     Punctuation characters; in the ‘C’ locale and ASCII character
+     encoding, this is ‘! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \
+     ] ^ _ ` { | } ~’.
+
+‘[:space:]’
+     Space characters: in the ‘C’ locale, this is tab, newline, vertical
+     tab, form feed, carriage return, and space.  *Note Usage::, for
+     more discussion of matching newlines.
+
+‘[:upper:]’
+     Upper-case letters: in the ‘C’ locale and ASCII character encoding,
+     this is ‘A B C D E F G H I J K L M N O P Q R S T U V W X Y Z’.
+
+‘[:xdigit:]’
+     Hexadecimal digits: ‘0 1 2 3 4 5 6 7 8 9 A B C D E F a b c d e f’.
+
+   Note that the brackets in these class names are part of the symbolic
+names, and must be included in addition to the brackets delimiting the
+bracket expression.
+
+   If you mistakenly omit the outer brackets, and search for say,
+‘[:upper:]’, GNU ‘grep’ prints a diagnostic and exits with status 2, on
+the assumption that you did not intend to search for the nominally
+equivalent regular expression: ‘[:epru]’.  Set the ‘POSIXLY_CORRECT’
+environment variable to disable this feature.
+
+   Special characters lose their special meaning inside bracket
+expressions.
+
+‘]’
+     ends the bracket expression if it’s not the first list item.  So,
+     if you want to make the ‘]’ character a list item, you must put it
+     first.
+
+‘[.’
+     represents the open collating symbol.
+
+‘.]’
+     represents the close collating symbol.
+
+‘[=’
+     represents the open equivalence class.
+
+‘=]’
+     represents the close equivalence class.
+
+‘[:’
+     represents the open character class symbol, and should be followed
+     by a valid character class name.
+
+‘:]’
+     represents the close character class symbol.
+
+‘-’
+     represents the range if it’s not first or last in a list or the
+     ending point of a range.
+
+‘^’
+     represents the characters not in the list.  If you want to make the
+     ‘^’ character a list item, place it anywhere but first.
+
+
+File: grep.info,  Node: The Backslash Character and Special Expressions,  Next: Anchoring,  Prev: Character Classes and Bracket Expressions,  Up: Regular Expressions
+
+3.3 The Backslash Character and Special Expressions
+===================================================
+
+The ‘\’ character followed by a special character is a regular
+expression that matches the special character.  The ‘\’ character, when
+followed by certain ordinary characters, takes a special meaning:
+
+‘\b’
+     Match the empty string at the edge of a word.
+
+‘\B’
+     Match the empty string provided it’s not at the edge of a word.
+
+‘\<’
+     Match the empty string at the beginning of a word.
+
+‘\>’
+     Match the empty string at the end of a word.
+
+‘\w’
+     Match word constituent, it is a synonym for ‘[_[:alnum:]]’.
+
+‘\W’
+     Match non-word constituent, it is a synonym for ‘[^_[:alnum:]]’.
+
+‘\s’
+     Match whitespace, it is a synonym for ‘[[:space:]]’.
+
+‘\S’
+     Match non-whitespace, it is a synonym for ‘[^[:space:]]’.
+
+   For example, ‘\brat\b’ matches the separate word ‘rat’, ‘\Brat\B’
+matches ‘crate’ but not ‘furry rat’.
+
+
+File: grep.info,  Node: Anchoring,  Next: Back-references and Subexpressions,  Prev: The Backslash Character and Special Expressions,  Up: Regular Expressions
+
+3.4 Anchoring
+=============
+
+The caret ‘^’ and the dollar sign ‘$’ are special characters that
+respectively match the empty string at the beginning and end of a line.
+They are termed “anchors�, since they force the match to be “anchored�
+to beginning or end of a line, respectively.
+
+
+File: grep.info,  Node: Back-references and Subexpressions,  Next: Basic vs Extended,  Prev: Anchoring,  Up: Regular Expressions
+
+3.5 Back-references and Subexpressions
+======================================
+
+The back-reference ‘\N’, where N is a single nonzero digit, matches the
+substring previously matched by the Nth parenthesized subexpression of
+the regular expression.  For example, ‘(a)\1’ matches ‘aa’.  If the
+parenthesized subexpression does not participate in the match, the
+back-reference makes the whole match fail; for example, ‘(a)*\1’ fails
+to match ‘a’.  If the parenthesized subexpression matches more than one
+substring, the back-reference refers to the last matched substring; for
+example, ‘^(ab*)*\1$’ matches ‘ababbabb’ but not ‘ababbab’.  When
+multiple regular expressions are given with ‘-e’ or from a file (‘-f
+FILE’), back-references are local to each expression.
+
+   *Note Known Bugs::, for some known problems with back-references.
+
+
+File: grep.info,  Node: Basic vs Extended,  Next: Character Encoding,  Prev: Back-references and Subexpressions,  Up: Regular Expressions
+
+3.6 Basic vs Extended Regular Expressions
+=========================================
+
+In basic regular expressions the characters ‘?’, ‘+’, ‘{’, ‘|’, ‘(’, and
+‘)’ lose their special meaning; instead use the backslashed versions
+‘\?’, ‘\+’, ‘\{’, ‘\|’, ‘\(’, and ‘\)’.  Also, a backslash is needed
+before an interval expression’s closing ‘}’, and an unmatched ‘\)’ is
+invalid.
+
+   Portable scripts should avoid the following constructs, as POSIX says
+they produce undefined results:
+
+   • Extended regular expressions that use back-references.
+   • Basic regular expressions that use ‘\?’, ‘\+’, or ‘\|’.
+   • Empty parenthesized regular expressions like ‘()’.
+   • Empty alternatives (as in, e.g, ‘a|’).
+   • Repetition operators that immediately follow empty expressions,
+     unescaped ‘$’, or other repetition operators.
+   • A backslash escaping an ordinary character (e.g., ‘\S’), unless it
+     is a back-reference.
+   • An unescaped ‘[’ that is not part of a bracket expression.
+   • In extended regular expressions, an unescaped ‘{’ that is not part
+     of an interval expression.
+
+   Traditional ‘egrep’ did not support interval expressions and some
+‘egrep’ implementations use ‘\{’ and ‘\}’ instead, so portable scripts
+should avoid interval expressions in ‘grep -E’ patterns and should use
+‘[{]’ to match a literal ‘{’.
+
+   GNU ‘grep -E’ attempts to support traditional usage by assuming that
+‘{’ is not special if it would be the start of an invalid interval
+expression.  For example, the command ‘grep -E '{1'’ searches for the
+two-character string ‘{1’ instead of reporting a syntax error in the
+regular expression.  POSIX allows this behavior as an extension, but
+portable scripts should avoid it.
+
+
+File: grep.info,  Node: Character Encoding,  Next: Matching Non-ASCII,  Prev: Basic vs Extended,  Up: Regular Expressions
+
+3.7 Character Encoding
+======================
+
+The ‘LC_CTYPE’ locale specifies the encoding of characters in patterns
+and data, that is, whether text is encoded in UTF-8, ASCII, or some
+other encoding.  *Note Environment Variables::.
+
+   In the ‘C’ or ‘POSIX’ locale, every character is encoded as a single
+byte and every byte is a valid character.  In more-complex encodings
+such as UTF-8, a sequence of multiple bytes may be needed to represent a
+character, and some bytes may be encoding errors that do not contribute
+to the representation of any character.  POSIX does not specify the
+behavior of ‘grep’ when patterns or input data contain encoding errors
+or null characters, so portable scripts should avoid such usage.  As an
+extension to POSIX, GNU ‘grep’ treats null characters like any other
+character.  However, unless the ‘-a’ (‘--binary-files=text’) option is
+used, the presence of null characters in input or of encoding errors in
+output causes GNU ‘grep’ to treat the file as binary and suppress
+details about matches.  *Note File and Directory Selection::.
+
+   Regardless of locale, the 103 characters in the POSIX Portable
+Character Set (a subset of ASCII) are always encoded as a single byte,
+and the 128 ASCII characters have their usual single-byte encodings on
+all but oddball platforms.
+
+
+File: grep.info,  Node: Matching Non-ASCII,  Prev: Character Encoding,  Up: Regular Expressions
+
+3.8 Matching Non-ASCII and Non-printable Characters
+===================================================
+
+In a regular expression, non-ASCII and non-printable characters other
+than newline are not special, and represent themselves.  For example, in
+a locale using UTF-8 the command ‘grep 'Λ ω'’ (where the white space
+between ‘Λ’ and the ‘ω’ is a tab character) searches for ‘Λ’ (Unicode
+character U+039B GREEK CAPITAL LETTER LAMBDA), followed by a tab (U+0009
+TAB), followed by ‘ω’ (U+03C9 GREEK SMALL LETTER OMEGA).
+
+   Suppose you want to limit your pattern to only printable characters
+(or even only printable ASCII characters) to keep your script readable
+or portable, but you also want to match specific non-ASCII or non-null
+non-printable characters.  If you are using the ‘-P’ (‘--perl-regexp’)
+option, PCREs give you several ways to do this.  Otherwise, if you are
+using Bash, the GNU project’s shell, you can represent these characters
+via ANSI-C quoting.  For example, the Bash commands ‘grep $'Λ\tω'’ and
+‘grep $'\u039B\t\u03C9'’ both search for the same three-character string
+‘Λ ω’ mentioned earlier.  However, because Bash translates ANSI-C
+quoting before ‘grep’ sees the pattern, this technique should not be
+used to match printable ASCII characters; for example, ‘grep $'\u005E'’
+is equivalent to ‘grep '^'’ and matches any line, not just lines
+containing the character ‘^’ (U+005E CIRCUMFLEX ACCENT).
+
+   Since PCREs and ANSI-C quoting are GNU extensions to POSIX, portable
+shell scripts written in ASCII should use other methods to match
+specific non-ASCII characters.  For example, in a UTF-8 locale the
+command ‘grep "$(printf '\316\233\t\317\211\n')"’ is a portable albeit
+hard-to-read alternative to Bash’s ‘grep $'Λ\tω'’.  However, none of
+these techniques will let you put a null character directly into a
+command-line pattern; null characters can appear only in a pattern
+specified via the ‘-f’ (‘--file’) option.
+
+
+File: grep.info,  Node: Usage,  Next: Performance,  Prev: Regular Expressions,  Up: Top
+
+4 Usage
+*******
+
+Here is an example command that invokes GNU ‘grep’:
+
+     grep -i 'hello.*world' menu.h main.c
+
+This lists all lines in the files ‘menu.h’ and ‘main.c’ that contain the
+string ‘hello’ followed by the string ‘world’; this is because ‘.*’
+matches zero or more characters within a line.  *Note Regular
+Expressions::.  The ‘-i’ option causes ‘grep’ to ignore case, causing it
+to match the line ‘Hello, world!’, which it would not otherwise match.
+
+   Here is a more complex example, showing the location and contents of
+any line containing ‘f’ and ending in ‘.c’, within all files in the
+current directory whose names start with non-‘.’, contain ‘g’, and end
+in ‘.h’.  The ‘-n’ option outputs line numbers, the ‘--’ argument treats
+any later arguments as file names not options even if ‘*g*.h’ expands to
+a file name that starts with ‘-’, and the empty file ‘/dev/null’ causes
+file names to be output even if only one file name happens to be of the
+form ‘*g*.h’.
+
+     grep -n -- 'f.*\.c$' *g*.h /dev/null
+
+Note that the regular expression syntax used in the pattern differs from
+the globbing syntax that the shell uses to match file names.
+
+   *Note Invoking::, for more details about how to invoke ‘grep’.
+
+   Here are some common questions and answers about ‘grep’ usage.
+
+  1. How can I list just the names of matching files?
+
+          grep -l 'main' test-*.c
+
+     lists names of ‘test-*.c’ files in the current directory whose
+     contents mention ‘main’.
+
+  2. How do I search directories recursively?
+
+          grep -r 'hello' /home/gigi
+
+     searches for ‘hello’ in all files under the ‘/home/gigi’ directory.
+     For more control over which files are searched, use ‘find’ and
+     ‘grep’.  For example, the following command searches only C files:
+
+          find /home/gigi -name '*.c' ! -type d \
+            -exec grep -H 'hello' '{}' +
+
+     This differs from the command:
+
+          grep -H 'hello' /home/gigi/*.c
+
+     which merely looks for ‘hello’ in non-hidden C files in
+     ‘/home/gigi’ whose names end in ‘.c’.  The ‘find’ command line
+     above is more similar to the command:
+
+          grep -r --include='*.c' 'hello' /home/gigi
+
+  3. What if a pattern or file has a leading ‘-’?
+
+          grep -- '--cut here--' *
+
+     searches for all lines matching ‘--cut here--’.  Without ‘--’,
+     ‘grep’ would attempt to parse ‘--cut here--’ as a list of options,
+     and there would be similar problems with any file names beginning
+     with ‘-’.
+
+     Alternatively, you can prevent misinterpretation of leading ‘-’ by
+     using ‘-e’ for patterns and leading ‘./’ for files:
+
+          grep -e '--cut here--' ./*
+
+  4. Suppose I want to search for a whole word, not a part of a word?
+
+          grep -w 'hello' test*.log
+
+     searches only for instances of ‘hello’ that are entire words; it
+     does not match ‘Othello’.  For more control, use ‘\<’ and ‘\>’ to
+     match the start and end of words.  For example:
+
+          grep 'hello\>' test*.log
+
+     searches only for words ending in ‘hello’, so it matches the word
+     ‘Othello’.
+
+  5. How do I output context around the matching lines?
+
+          grep -C 2 'hello' test*.log
+
+     prints two lines of context around each matching line.
+
+  6. How do I force ‘grep’ to print the name of the file?
+
+     Append ‘/dev/null’:
+
+          grep 'eli' /etc/passwd /dev/null
+
+     gets you:
+
+          /etc/passwd:eli:x:2098:1000:Eli Smith:/home/eli:/bin/bash
+
+     Alternatively, use ‘-H’, which is a GNU extension:
+
+          grep -H 'eli' /etc/passwd
+
+  7. Why do people use strange regular expressions on ‘ps’ output?
+
+          ps -ef | grep '[c]ron'
+
+     If the pattern had been written without the square brackets, it
+     would have matched not only the ‘ps’ output line for ‘cron’, but
+     also the ‘ps’ output line for ‘grep’.  Note that on some platforms,
+     ‘ps’ limits the output to the width of the screen; ‘grep’ does not
+     have any limit on the length of a line except the available memory.
+
+  8. Why does ‘grep’ report “Binary file matches�?
+
+     If ‘grep’ listed all matching “lines� from a binary file, it would
+     probably generate output that is not useful, and it might even muck
+     up your display.  So GNU ‘grep’ suppresses output from files that
+     appear to be binary files.  To force GNU ‘grep’ to output lines
+     even from files that appear to be binary, use the ‘-a’ or
+     ‘--binary-files=text’ option.  To eliminate the “Binary file
+     matches� messages, use the ‘-I’ or ‘--binary-files=without-match’
+     option, or the ‘-s’ or ‘--no-messages’ option.
+
+  9. Why doesn’t ‘grep -lv’ print non-matching file names?
+
+     ‘grep -lv’ lists the names of all files containing one or more
+     lines that do not match.  To list the names of all files that
+     contain no matching lines, use the ‘-L’ or ‘--files-without-match’
+     option.
+
+  10. I can do “OR� with ‘|’, but what about “AND�?
+
+          grep 'paul' /etc/motd | grep 'franc,ois'
+
+     finds all lines that contain both ‘paul’ and ‘franc,ois’.
+
+  11. Why does the empty pattern match every input line?
+
+     The ‘grep’ command searches for lines that contain strings that
+     match a pattern.  Every line contains the empty string, so an empty
+     pattern causes ‘grep’ to find a match on each line.  It is not the
+     only such pattern: ‘^’, ‘$’, and many other patterns cause ‘grep’
+     to match every line.
+
+     To match empty lines, use the pattern ‘^$’.  To match blank lines,
+     use the pattern ‘^[[:blank:]]*$’.  To match no lines at all, use
+     the command ‘grep -f /dev/null’.
+
+  12. How can I search in both standard input and in files?
+
+     Use the special file name ‘-’:
+
+          cat /etc/passwd | grep 'alain' - /etc/motd
+
+  13. Why is this back-reference failing?
+
+          echo 'ba' | grep -E '(a)\1|b\1'
+
+     This outputs an error message, because the second ‘\1’ has nothing
+     to refer back to, meaning it will never match anything.
+
+  14. How can I match across lines?
+
+     Standard grep cannot do this, as it is fundamentally line-based.
+     Therefore, merely using the ‘[:space:]’ character class does not
+     match newlines in the way you might expect.
+
+     With the GNU ‘grep’ option ‘-z’ (‘--null-data’), each input and
+     output “line� is null-terminated; *note Other Options::.  Thus, you
+     can match newlines in the input, but typically if there is a match
+     the entire input is output, so this usage is often combined with
+     output-suppressing options like ‘-q’, e.g.:
+
+          printf 'foo\nbar\n' | grep -z -q 'foo[[:space:]]\+bar'
+
+     If this does not suffice, you can transform the input before giving
+     it to ‘grep’, or turn to ‘awk’, ‘sed’, ‘perl’, or many other
+     utilities that are designed to operate across lines.
+
+  15. What do ‘grep’, ‘fgrep’, and ‘egrep’ stand for?
+
+     The name ‘grep’ comes from the way line editing was done on Unix.
+     For example, ‘ed’ uses the following syntax to print a list of
+     matching lines on the screen:
+
+          global/regular expression/print
+          g/re/p
+
+     ‘fgrep’ stands for Fixed ‘grep’; ‘egrep’ stands for Extended
+     ‘grep’.
+
+
+File: grep.info,  Node: Performance,  Next: Reporting Bugs,  Prev: Usage,  Up: Top
+
+5 Performance
+*************
+
+Typically ‘grep’ is an efficient way to search text.  However, it can be
+quite slow in some cases, and it can search large files where even minor
+performance tweaking can help significantly.  Although the algorithm
+used by ‘grep’ is an implementation detail that can change from release
+to release, understanding its basic strengths and weaknesses can help
+you improve its performance.
+
+   The ‘grep’ command operates partly via a set of automata that are
+designed for efficiency, and partly via a slower matcher that takes over
+when the fast matchers run into unusual features like back-references.
+When feasible, the Boyer–Moore fast string searching algorithm is used
+to match a single fixed pattern, and the Aho–Corasick algorithm is used
+to match multiple fixed patterns.
+
+   Generally speaking ‘grep’ operates more efficiently in single-byte
+locales, since it can avoid the special processing needed for multi-byte
+characters.  If your patterns will work just as well that way, setting
+‘LC_ALL’ to a single-byte locale can help performance considerably.
+Setting ‘LC_ALL='C'’ can be particularly efficient, as ‘grep’ is tuned
+for that locale.
+
+   Outside the ‘C’ locale, case-insensitive search, and search for
+bracket expressions like ‘[a-z]’ and ‘[[=a=]b]’, can be surprisingly
+inefficient due to difficulties in fast portable access to concepts like
+multi-character collating elements.
+
+   A back-reference such as ‘\1’ can hurt performance significantly in
+some cases, since back-references cannot in general be implemented via a
+finite state automaton, and instead trigger a backtracking algorithm
+that can be quite inefficient.  For example, although the pattern
+‘^(.*)\1{14}(.*)\2{13}$’ matches only lines whose lengths can be written
+as a sum 15x + 14y for nonnegative integers x and y, the pattern matcher
+does not perform linear Diophantine analysis and instead backtracks
+through all possible matching strings, using an algorithm that is
+exponential in the worst case.
+
+   On some operating systems that support files with holes—large regions
+of zeros that are not physically present on secondary storage—‘grep’ can
+skip over the holes efficiently without needing to read the zeros.  This
+optimization is not available if the ‘-a’ (‘--binary-files=text’) option
+is used (*note File and Directory Selection::), unless the ‘-z’
+(‘--null-data’) option is also used (*note Other Options::).
+
+   For more about the algorithms used by ‘grep’ and about related string
+matching algorithms, see:
+
+   • Aho AV. Algorithms for finding patterns in strings. In: van Leeuwen
+     J. _Handbook of Theoretical Computer Science_, vol. A. New York:
+     Elsevier; 1990. p. 255–300. This surveys classic string matching
+     algorithms, some of which are used by ‘grep’.
+
+   • Aho AV, Corasick MJ. Efficient string matching: an aid to
+     bibliographic search. _CACM_. 1975;18(6):333–40.
+     <https://dx.doi.org/10.1145/360825.360855>. This introduces the
+     Aho–Corasick algorithm.
+
+   • Boyer RS, Moore JS. A fast string searching algorithm. _CACM_.
+     1977;20(10):762–72. <https://dx.doi.org/10.1145/359842.359859>.
+     This introduces the Boyer–Moore algorithm.
+
+   • Faro S, Lecroq T. The exact online string matching problem: a
+     review of the most recent results. _ACM Comput Surv_.
+     2013;45(2):13. <https://dx.doi.org/10.1145/2431211.2431212>. This
+     surveys string matching algorithms that might help improve the
+     performance of ‘grep’ in the future.
+
+
+File: grep.info,  Node: Reporting Bugs,  Next: Copying,  Prev: Performance,  Up: Top
+
+6 Reporting bugs
+****************
+
+Bug reports can be found at the GNU bug report logs for ‘grep’
+(https://debbugs.gnu.org/cgi/pkgreport.cgi?package=grep).  If you find a
+bug not listed there, please email it to <bug-grep@gnu.org> to create a
+new bug report.
+
+* Menu:
+
+* Known Bugs::
+
+
+File: grep.info,  Node: Known Bugs,  Up: Reporting Bugs
+
+6.1 Known Bugs
+==============
+
+Large repetition counts in the ‘{n,m}’ construct may cause ‘grep’ to use
+lots of memory.  In addition, certain other obscure regular expressions
+require exponential time and space, and may cause ‘grep’ to run out of
+memory.
+
+   Back-references can greatly slow down matching, as they can generate
+exponentially many matching possibilities that can consume both time and
+memory to explore.  Also, the POSIX specification for back-references is
+at times unclear.  Furthermore, many regular expression implementations
+have back-reference bugs that can cause programs to return incorrect
+answers or even crash, and fixing these bugs has often been
+low-priority: for example, as of 2021 the GNU C library bug database
+(https://sourceware.org/bugzilla/) contained back-reference bugs 52,
+10844, 11053, 24269 and 25322, with little sign of forthcoming fixes.
+Luckily, back-references are rarely useful and it should be little
+trouble to avoid them in practical applications.
+
+
+File: grep.info,  Node: Copying,  Next: Index,  Prev: Reporting Bugs,  Up: Top
+
+7 Copying
+*********
+
+GNU ‘grep’ is licensed under the GNU GPL, which makes it “free
+software�.
+
+   The “free� in “free software� refers to liberty, not price.  As some
+GNU project advocates like to point out, think of “free speech� rather
+than “free beer�.  In short, you have the right (freedom) to run and
+change ‘grep’ and distribute it to other people, and—if you want—charge
+money for doing either.  The important restriction is that you have to
+grant your recipients the same rights and impose the same restrictions.
+
+   This general method of licensing software is sometimes called “open
+source�.  The GNU project prefers the term “free software� for reasons
+outlined at
+<https://www.gnu.org/philosophy/open-source-misses-the-point.html>.
+
+   This manual is free documentation in the same sense.  The
+documentation license is included below.  The license for the program is
+available with the source code, or at
+<https://www.gnu.org/licenses/gpl.html>.
+
+* Menu:
+
+* GNU Free Documentation License::
+
+
+File: grep.info,  Node: GNU Free Documentation License,  Up: Copying
+
+7.1 GNU Free Documentation License
+==================================
+
+                     Version 1.3, 3 November 2008
+
+     Copyright © 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
+     <https://fsf.org/>
+
+     Everyone is permitted to copy and distribute verbatim copies
+     of this license document, but changing it is not allowed.
+
+  0. PREAMBLE
+
+     The purpose of this License is to make a manual, textbook, or other
+     functional and useful document “free� in the sense of freedom: to
+     assure everyone the effective freedom to copy and redistribute it,
+     with or without modifying it, either commercially or
+     noncommercially.  Secondarily, this License preserves for the
+     author and publisher a way to get credit for their work, while not
+     being considered responsible for modifications made by others.
+
+     This License is a kind of “copyleft�, which means that derivative
+     works of the document must themselves be free in the same sense.
+     It complements the GNU General Public License, which is a copyleft
+     license designed for free software.
+
+     We have designed this License in order to use it for manuals for
+     free software, because free software needs free documentation: a
+     free program should come with manuals providing the same freedoms
+     that the software does.  But this License is not limited to
+     software manuals; it can be used for any textual work, regardless
+     of subject matter or whether it is published as a printed book.  We
+     recommend this License principally for works whose purpose is
+     instruction or reference.
+
+  1. APPLICABILITY AND DEFINITIONS
+
+     This License applies to any manual or other work, in any medium,
+     that contains a notice placed by the copyright holder saying it can
+     be distributed under the terms of this License.  Such a notice
+     grants a world-wide, royalty-free license, unlimited in duration,
+     to use that work under the conditions stated herein.  The
+     “Document�, below, refers to any such manual or work.  Any member
+     of the public is a licensee, and is addressed as “you�.  You accept
+     the license if you copy, modify or distribute the work in a way
+     requiring permission under copyright law.
+
+     A “Modified Version� of the Document means any work containing the
+     Document or a portion of it, either copied verbatim, or with
+     modifications and/or translated into another language.
+
+     A “Secondary Section� is a named appendix or a front-matter section
+     of the Document that deals exclusively with the relationship of the
+     publishers or authors of the Document to the Document’s overall
+     subject (or to related matters) and contains nothing that could
+     fall directly within that overall subject.  (Thus, if the Document
+     is in part a textbook of mathematics, a Secondary Section may not
+     explain any mathematics.)  The relationship could be a matter of
+     historical connection with the subject or with related matters, or
+     of legal, commercial, philosophical, ethical or political position
+     regarding them.
+
+     The “Invariant Sections� are certain Secondary Sections whose
+     titles are designated, as being those of Invariant Sections, in the
+     notice that says that the Document is released under this License.
+     If a section does not fit the above definition of Secondary then it
+     is not allowed to be designated as Invariant.  The Document may
+     contain zero Invariant Sections.  If the Document does not identify
+     any Invariant Sections then there are none.
+
+     The “Cover Texts� are certain short passages of text that are
+     listed, as Front-Cover Texts or Back-Cover Texts, in the notice
+     that says that the Document is released under this License.  A
+     Front-Cover Text may be at most 5 words, and a Back-Cover Text may
+     be at most 25 words.
+
+     A “Transparent� copy of the Document means a machine-readable copy,
+     represented in a format whose specification is available to the
+     general public, that is suitable for revising the document
+     straightforwardly with generic text editors or (for images composed
+     of pixels) generic paint programs or (for drawings) some widely
+     available drawing editor, and that is suitable for input to text
+     formatters or for automatic translation to a variety of formats
+     suitable for input to text formatters.  A copy made in an otherwise
+     Transparent file format whose markup, or absence of markup, has
+     been arranged to thwart or discourage subsequent modification by
+     readers is not Transparent.  An image format is not Transparent if
+     used for any substantial amount of text.  A copy that is not
+     “Transparent� is called “Opaque�.
+
+     Examples of suitable formats for Transparent copies include plain
+     ASCII without markup, Texinfo input format, LaTeX input format,
+     SGML or XML using a publicly available DTD, and standard-conforming
+     simple HTML, PostScript or PDF designed for human modification.
+     Examples of transparent image formats include PNG, XCF and JPG.
+     Opaque formats include proprietary formats that can be read and
+     edited only by proprietary word processors, SGML or XML for which
+     the DTD and/or processing tools are not generally available, and
+     the machine-generated HTML, PostScript or PDF produced by some word
+     processors for output purposes only.
+
+     The “Title Page� means, for a printed book, the title page itself,
+     plus such following pages as are needed to hold, legibly, the
+     material this License requires to appear in the title page.  For
+     works in formats which do not have any title page as such, “Title
+     Page� means the text near the most prominent appearance of the
+     work’s title, preceding the beginning of the body of the text.
+
+     The “publisher� means any person or entity that distributes copies
+     of the Document to the public.
+
+     A section “Entitled XYZ� means a named subunit of the Document
+     whose title either is precisely XYZ or contains XYZ in parentheses
+     following text that translates XYZ in another language.  (Here XYZ
+     stands for a specific section name mentioned below, such as
+     “Acknowledgements�, “Dedications�, “Endorsements�, or “History�.)
+     To “Preserve the Title� of such a section when you modify the
+     Document means that it remains a section “Entitled XYZ� according
+     to this definition.
+
+     The Document may include Warranty Disclaimers next to the notice
+     which states that this License applies to the Document.  These
+     Warranty Disclaimers are considered to be included by reference in
+     this License, but only as regards disclaiming warranties: any other
+     implication that these Warranty Disclaimers may have is void and
+     has no effect on the meaning of this License.
+
+  2. VERBATIM COPYING
+
+     You may copy and distribute the Document in any medium, either
+     commercially or noncommercially, provided that this License, the
+     copyright notices, and the license notice saying this License
+     applies to the Document are reproduced in all copies, and that you
+     add no other conditions whatsoever to those of this License.  You
+     may not use technical measures to obstruct or control the reading
+     or further copying of the copies you make or distribute.  However,
+     you may accept compensation in exchange for copies.  If you
+     distribute a large enough number of copies you must also follow the
+     conditions in section 3.
+
+     You may also lend copies, under the same conditions stated above,
+     and you may publicly display copies.
+
+  3. COPYING IN QUANTITY
+
+     If you publish printed copies (or copies in media that commonly
+     have printed covers) of the Document, numbering more than 100, and
+     the Document’s license notice requires Cover Texts, you must
+     enclose the copies in covers that carry, clearly and legibly, all
+     these Cover Texts: Front-Cover Texts on the front cover, and
+     Back-Cover Texts on the back cover.  Both covers must also clearly
+     and legibly identify you as the publisher of these copies.  The
+     front cover must present the full title with all words of the title
+     equally prominent and visible.  You may add other material on the
+     covers in addition.  Copying with changes limited to the covers, as
+     long as they preserve the title of the Document and satisfy these
+     conditions, can be treated as verbatim copying in other respects.
+
+     If the required texts for either cover are too voluminous to fit
+     legibly, you should put the first ones listed (as many as fit
+     reasonably) on the actual cover, and continue the rest onto
+     adjacent pages.
+
+     If you publish or distribute Opaque copies of the Document
+     numbering more than 100, you must either include a machine-readable
+     Transparent copy along with each Opaque copy, or state in or with
+     each Opaque copy a computer-network location from which the general
+     network-using public has access to download using public-standard
+     network protocols a complete Transparent copy of the Document, free
+     of added material.  If you use the latter option, you must take
+     reasonably prudent steps, when you begin distribution of Opaque
+     copies in quantity, to ensure that this Transparent copy will
+     remain thus accessible at the stated location until at least one
+     year after the last time you distribute an Opaque copy (directly or
+     through your agents or retailers) of that edition to the public.
+
+     It is requested, but not required, that you contact the authors of
+     the Document well before redistributing any large number of copies,
+     to give them a chance to provide you with an updated version of the
+     Document.
+
+  4. MODIFICATIONS
+
+     You may copy and distribute a Modified Version of the Document
+     under the conditions of sections 2 and 3 above, provided that you
+     release the Modified Version under precisely this License, with the
+     Modified Version filling the role of the Document, thus licensing
+     distribution and modification of the Modified Version to whoever
+     possesses a copy of it.  In addition, you must do these things in
+     the Modified Version:
+
+       A. Use in the Title Page (and on the covers, if any) a title
+          distinct from that of the Document, and from those of previous
+          versions (which should, if there were any, be listed in the
+          History section of the Document).  You may use the same title
+          as a previous version if the original publisher of that
+          version gives permission.
+
+       B. List on the Title Page, as authors, one or more persons or
+          entities responsible for authorship of the modifications in
+          the Modified Version, together with at least five of the
+          principal authors of the Document (all of its principal
+          authors, if it has fewer than five), unless they release you
+          from this requirement.
+
+       C. State on the Title page the name of the publisher of the
+          Modified Version, as the publisher.
+
+       D. Preserve all the copyright notices of the Document.
+
+       E. Add an appropriate copyright notice for your modifications
+          adjacent to the other copyright notices.
+
+       F. Include, immediately after the copyright notices, a license
+          notice giving the public permission to use the Modified
+          Version under the terms of this License, in the form shown in
+          the Addendum below.
+
+       G. Preserve in that license notice the full lists of Invariant
+          Sections and required Cover Texts given in the Document’s
+          license notice.
+
+       H. Include an unaltered copy of this License.
+
+       I. Preserve the section Entitled “History�, Preserve its Title,
+          and add to it an item stating at least the title, year, new
+          authors, and publisher of the Modified Version as given on the
+          Title Page.  If there is no section Entitled “History� in the
+          Document, create one stating the title, year, authors, and
+          publisher of the Document as given on its Title Page, then add
+          an item describing the Modified Version as stated in the
+          previous sentence.
+
+       J. Preserve the network location, if any, given in the Document
+          for public access to a Transparent copy of the Document, and
+          likewise the network locations given in the Document for
+          previous versions it was based on.  These may be placed in the
+          “History� section.  You may omit a network location for a work
+          that was published at least four years before the Document
+          itself, or if the original publisher of the version it refers
+          to gives permission.
+
+       K. For any section Entitled “Acknowledgements� or “Dedications�,
+          Preserve the Title of the section, and preserve in the section
+          all the substance and tone of each of the contributor
+          acknowledgements and/or dedications given therein.
+
+       L. Preserve all the Invariant Sections of the Document, unaltered
+          in their text and in their titles.  Section numbers or the
+          equivalent are not considered part of the section titles.
+
+       M. Delete any section Entitled “Endorsements�.  Such a section
+          may not be included in the Modified Version.
+
+       N. Do not retitle any existing section to be Entitled
+          “Endorsements� or to conflict in title with any Invariant
+          Section.
+
+       O. Preserve any Warranty Disclaimers.
+
+     If the Modified Version includes new front-matter sections or
+     appendices that qualify as Secondary Sections and contain no
+     material copied from the Document, you may at your option designate
+     some or all of these sections as invariant.  To do this, add their
+     titles to the list of Invariant Sections in the Modified Version’s
+     license notice.  These titles must be distinct from any other
+     section titles.
+
+     You may add a section Entitled “Endorsements�, provided it contains
+     nothing but endorsements of your Modified Version by various
+     parties—for example, statements of peer review or that the text has
+     been approved by an organization as the authoritative definition of
+     a standard.
+
+     You may add a passage of up to five words as a Front-Cover Text,
+     and a passage of up to 25 words as a Back-Cover Text, to the end of
+     the list of Cover Texts in the Modified Version.  Only one passage
+     of Front-Cover Text and one of Back-Cover Text may be added by (or
+     through arrangements made by) any one entity.  If the Document
+     already includes a cover text for the same cover, previously added
+     by you or by arrangement made by the same entity you are acting on
+     behalf of, you may not add another; but you may replace the old
+     one, on explicit permission from the previous publisher that added
+     the old one.
+
+     The author(s) and publisher(s) of the Document do not by this
+     License give permission to use their names for publicity for or to
+     assert or imply endorsement of any Modified Version.
+
+  5. COMBINING DOCUMENTS
+
+     You may combine the Document with other documents released under
+     this License, under the terms defined in section 4 above for
+     modified versions, provided that you include in the combination all
+     of the Invariant Sections of all of the original documents,
+     unmodified, and list them all as Invariant Sections of your
+     combined work in its license notice, and that you preserve all
+     their Warranty Disclaimers.
+
+     The combined work need only contain one copy of this License, and
+     multiple identical Invariant Sections may be replaced with a single
+     copy.  If there are multiple Invariant Sections with the same name
+     but different contents, make the title of each such section unique
+     by adding at the end of it, in parentheses, the name of the
+     original author or publisher of that section if known, or else a
+     unique number.  Make the same adjustment to the section titles in
+     the list of Invariant Sections in the license notice of the
+     combined work.
+
+     In the combination, you must combine any sections Entitled
+     “History� in the various original documents, forming one section
+     Entitled “History�; likewise combine any sections Entitled
+     “Acknowledgements�, and any sections Entitled “Dedications�.  You
+     must delete all sections Entitled “Endorsements.�
+
+  6. COLLECTIONS OF DOCUMENTS
+
+     You may make a collection consisting of the Document and other
+     documents released under this License, and replace the individual
+     copies of this License in the various documents with a single copy
+     that is included in the collection, provided that you follow the
+     rules of this License for verbatim copying of each of the documents
+     in all other respects.
+
+     You may extract a single document from such a collection, and
+     distribute it individually under this License, provided you insert
+     a copy of this License into the extracted document, and follow this
+     License in all other respects regarding verbatim copying of that
+     document.
+
+  7. AGGREGATION WITH INDEPENDENT WORKS
+
+     A compilation of the Document or its derivatives with other
+     separate and independent documents or works, in or on a volume of a
+     storage or distribution medium, is called an “aggregate� if the
+     copyright resulting from the compilation is not used to limit the
+     legal rights of the compilation’s users beyond what the individual
+     works permit.  When the Document is included in an aggregate, this
+     License does not apply to the other works in the aggregate which
+     are not themselves derivative works of the Document.
+
+     If the Cover Text requirement of section 3 is applicable to these
+     copies of the Document, then if the Document is less than one half
+     of the entire aggregate, the Document’s Cover Texts may be placed
+     on covers that bracket the Document within the aggregate, or the
+     electronic equivalent of covers if the Document is in electronic
+     form.  Otherwise they must appear on printed covers that bracket
+     the whole aggregate.
+
+  8. TRANSLATION
+
+     Translation is considered a kind of modification, so you may
+     distribute translations of the Document under the terms of section
+     4.  Replacing Invariant Sections with translations requires special
+     permission from their copyright holders, but you may include
+     translations of some or all Invariant Sections in addition to the
+     original versions of these Invariant Sections.  You may include a
+     translation of this License, and all the license notices in the
+     Document, and any Warranty Disclaimers, provided that you also
+     include the original English version of this License and the
+     original versions of those notices and disclaimers.  In case of a
+     disagreement between the translation and the original version of
+     this License or a notice or disclaimer, the original version will
+     prevail.
+
+     If a section in the Document is Entitled “Acknowledgements�,
+     “Dedications�, or “History�, the requirement (section 4) to
+     Preserve its Title (section 1) will typically require changing the
+     actual title.
+
+  9. TERMINATION
+
+     You may not copy, modify, sublicense, or distribute the Document
+     except as expressly provided under this License.  Any attempt
+     otherwise to copy, modify, sublicense, or distribute it is void,
+     and will automatically terminate your rights under this License.
+
+     However, if you cease all violation of this License, then your
+     license from a particular copyright holder is reinstated (a)
+     provisionally, unless and until the copyright holder explicitly and
+     finally terminates your license, and (b) permanently, if the
+     copyright holder fails to notify you of the violation by some
+     reasonable means prior to 60 days after the cessation.
+
+     Moreover, your license from a particular copyright holder is
+     reinstated permanently if the copyright holder notifies you of the
+     violation by some reasonable means, this is the first time you have
+     received notice of violation of this License (for any work) from
+     that copyright holder, and you cure the violation prior to 30 days
+     after your receipt of the notice.
+
+     Termination of your rights under this section does not terminate
+     the licenses of parties who have received copies or rights from you
+     under this License.  If your rights have been terminated and not
+     permanently reinstated, receipt of a copy of some or all of the
+     same material does not give you any rights to use it.
+
+  10. FUTURE REVISIONS OF THIS LICENSE
+
+     The Free Software Foundation may publish new, revised versions of
+     the GNU Free Documentation License from time to time.  Such new
+     versions will be similar in spirit to the present version, but may
+     differ in detail to address new problems or concerns.  See
+     <https://www.gnu.org/licenses/>.
+
+     Each version of the License is given a distinguishing version
+     number.  If the Document specifies that a particular numbered
+     version of this License “or any later version� applies to it, you
+     have the option of following the terms and conditions either of
+     that specified version or of any later version that has been
+     published (not as a draft) by the Free Software Foundation.  If the
+     Document does not specify a version number of this License, you may
+     choose any version ever published (not as a draft) by the Free
+     Software Foundation.  If the Document specifies that a proxy can
+     decide which future versions of this License can be used, that
+     proxy’s public statement of acceptance of a version permanently
+     authorizes you to choose that version for the Document.
+
+  11. RELICENSING
+
+     “Massive Multiauthor Collaboration Site� (or “MMC Site�) means any
+     World Wide Web server that publishes copyrightable works and also
+     provides prominent facilities for anybody to edit those works.  A
+     public wiki that anybody can edit is an example of such a server.
+     A “Massive Multiauthor Collaboration� (or “MMC�) contained in the
+     site means any set of copyrightable works thus published on the MMC
+     site.
+
+     “CC-BY-SA� means the Creative Commons Attribution-Share Alike 3.0
+     license published by Creative Commons Corporation, a not-for-profit
+     corporation with a principal place of business in San Francisco,
+     California, as well as future copyleft versions of that license
+     published by that same organization.
+
+     “Incorporate� means to publish or republish a Document, in whole or
+     in part, as part of another Document.
+
+     An MMC is “eligible for relicensing� if it is licensed under this
+     License, and if all works that were first published under this
+     License somewhere other than this MMC, and subsequently
+     incorporated in whole or in part into the MMC, (1) had no cover
+     texts or invariant sections, and (2) were thus incorporated prior
+     to November 1, 2008.
+
+     The operator of an MMC Site may republish an MMC contained in the
+     site under CC-BY-SA on the same site at any time before August 1,
+     2009, provided the MMC is eligible for relicensing.
+
+ADDENDUM: How to use this License for your documents
+====================================================
+
+To use this License in a document you have written, include a copy of
+the License in the document and put the following copyright and license
+notices just after the title page:
+
+       Copyright (C)  YEAR  YOUR NAME.
+       Permission is granted to copy, distribute and/or modify this document
+       under the terms of the GNU Free Documentation License, Version 1.3
+       or any later version published by the Free Software Foundation;
+       with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
+       Texts.  A copy of the license is included in the section entitled ``GNU
+       Free Documentation License''.
+
+   If you have Invariant Sections, Front-Cover Texts and Back-Cover
+Texts, replace the “with...Texts.� line with this:
+
+         with the Invariant Sections being LIST THEIR TITLES, with
+         the Front-Cover Texts being LIST, and with the Back-Cover Texts
+         being LIST.
+
+   If you have Invariant Sections without Cover Texts, or some other
+combination of the three, merge those two alternatives to suit the
+situation.
+
+   If your document contains nontrivial examples of program code, we
+recommend releasing these examples in parallel under your choice of free
+software license, such as the GNU General Public License, to permit
+their use in free software.
+
+
+File: grep.info,  Node: Index,  Prev: Copying,  Up: Top
+
+Index
+*****
+
+
+* Menu:
+
+* *:                                     Fundamental Structure.
+                                                              (line  22)
+* +:                                     Fundamental Structure.
+                                                              (line  25)
+* --:                                    Other Options.       (line   7)
+* --after-context:                       Context Line Control.
+                                                              (line  15)
+* --basic-regexp:                        grep Programs.       (line  15)
+* --before-context:                      Context Line Control.
+                                                              (line  19)
+* --binary:                              Other Options.       (line  22)
+* --binary-files:                        File and Directory Selection.
+                                                              (line  12)
+* --byte-offset:                         Output Line Prefix Control.
+                                                              (line  12)
+* --color:                               General Output Control.
+                                                              (line  14)
+* --colour:                              General Output Control.
+                                                              (line  14)
+* --context:                             Context Line Control.
+                                                              (line  24)
+* --count:                               General Output Control.
+                                                              (line   8)
+* --dereference-recursive:               File and Directory Selection.
+                                                              (line 113)
+* --devices:                             File and Directory Selection.
+                                                              (line  51)
+* --directories:                         File and Directory Selection.
+                                                              (line  62)
+* --exclude:                             File and Directory Selection.
+                                                              (line  73)
+* --exclude-dir:                         File and Directory Selection.
+                                                              (line  87)
+* --exclude-from:                        File and Directory Selection.
+                                                              (line  83)
+* --extended-regexp:                     grep Programs.       (line  20)
+* --file:                                Matching Control.    (line  17)
+* --files-with-matches:                  General Output Control.
+                                                              (line  34)
+* --files-without-match:                 General Output Control.
+                                                              (line  29)
+* --fixed-strings:                       grep Programs.       (line  25)
+* --group-separator:                     Context Line Control.
+                                                              (line  27)
+* --group-separator <1>:                 Context Line Control.
+                                                              (line  31)
+* --help:                                Generic Program Information.
+                                                              (line   7)
+* --ignore-case:                         Matching Control.    (line  26)
+* --include:                             File and Directory Selection.
+                                                              (line  97)
+* --initial-tab:                         Output Line Prefix Control.
+                                                              (line  41)
+* --invert-match:                        Matching Control.    (line  51)
+* --label:                               Output Line Prefix Control.
+                                                              (line  28)
+* --line-buffered:                       Other Options.       (line  13)
+* --line-number:                         Output Line Prefix Control.
+                                                              (line  36)
+* --line-regexp:                         Matching Control.    (line  73)
+* --max-count:                           General Output Control.
+                                                              (line  40)
+* --no-filename:                         Output Line Prefix Control.
+                                                              (line  23)
+* --no-ignore-case:                      Matching Control.    (line  44)
+* --no-messages:                         General Output Control.
+                                                              (line  85)
+* --null:                                Output Line Prefix Control.
+                                                              (line  50)
+* --null-data:                           Other Options.       (line  43)
+* --only-matching:                       General Output Control.
+                                                              (line  70)
+* --perl-regexp:                         grep Programs.       (line  30)
+* --quiet:                               General Output Control.
+                                                              (line  78)
+* --recursive:                           File and Directory Selection.
+                                                              (line 105)
+* --regexp=PATTERNS:                     Matching Control.    (line   8)
+* --silent:                              General Output Control.
+                                                              (line  78)
+* --text:                                File and Directory Selection.
+                                                              (line   8)
+* --version:                             Generic Program Information.
+                                                              (line  12)
+* --with-filename:                       Output Line Prefix Control.
+                                                              (line  18)
+* --word-regexp:                         Matching Control.    (line  56)
+* -A:                                    Context Line Control.
+                                                              (line  15)
+* -a:                                    File and Directory Selection.
+                                                              (line   8)
+* -b:                                    Output Line Prefix Control.
+                                                              (line  12)
+* -B:                                    Context Line Control.
+                                                              (line  19)
+* -c:                                    General Output Control.
+                                                              (line   8)
+* -C:                                    Context Line Control.
+                                                              (line  24)
+* -D:                                    File and Directory Selection.
+                                                              (line  51)
+* -d:                                    File and Directory Selection.
+                                                              (line  62)
+* -e:                                    Matching Control.    (line   8)
+* -E:                                    grep Programs.       (line  20)
+* -f:                                    Matching Control.    (line  17)
+* -F:                                    grep Programs.       (line  25)
+* -G:                                    grep Programs.       (line  15)
+* -H:                                    Output Line Prefix Control.
+                                                              (line  18)
+* -h:                                    Output Line Prefix Control.
+                                                              (line  23)
+* -i:                                    Matching Control.    (line  26)
+* -L:                                    General Output Control.
+                                                              (line  29)
+* -l:                                    General Output Control.
+                                                              (line  34)
+* -m:                                    General Output Control.
+                                                              (line  40)
+* -n:                                    Output Line Prefix Control.
+                                                              (line  36)
+* -NUM:                                  Context Line Control.
+                                                              (line  24)
+* -o:                                    General Output Control.
+                                                              (line  70)
+* -P:                                    grep Programs.       (line  30)
+* -q:                                    General Output Control.
+                                                              (line  78)
+* -r:                                    File and Directory Selection.
+                                                              (line 105)
+* -R:                                    File and Directory Selection.
+                                                              (line 113)
+* -s:                                    General Output Control.
+                                                              (line  85)
+* -T:                                    Output Line Prefix Control.
+                                                              (line  41)
+* -U:                                    Other Options.       (line  22)
+* -V:                                    Generic Program Information.
+                                                              (line  12)
+* -v:                                    Matching Control.    (line  51)
+* -w:                                    Matching Control.    (line  56)
+* -x:                                    Matching Control.    (line  73)
+* -y:                                    Matching Control.    (line  26)
+* -Z:                                    Output Line Prefix Control.
+                                                              (line  50)
+* -z:                                    Other Options.       (line  43)
+* .:                                     Fundamental Structure.
+                                                              (line  11)
+* ?:                                     Fundamental Structure.
+                                                              (line  19)
+* _N_GNU_nonoption_argv_flags_ environment variable: Environment Variables.
+                                                              (line 178)
+* {,M}:                                  Fundamental Structure.
+                                                              (line  34)
+* {N,M}:                                 Fundamental Structure.
+                                                              (line  38)
+* {N,}:                                  Fundamental Structure.
+                                                              (line  31)
+* {N}:                                   Fundamental Structure.
+                                                              (line  28)
+* after context:                         Context Line Control.
+                                                              (line  15)
+* alnum character class:                 Character Classes and Bracket Expressions.
+                                                              (line  31)
+* alpha character class:                 Character Classes and Bracket Expressions.
+                                                              (line  36)
+* alphabetic characters:                 Character Classes and Bracket Expressions.
+                                                              (line  36)
+* alphanumeric characters:               Character Classes and Bracket Expressions.
+                                                              (line  31)
+* anchoring:                             Anchoring.           (line   6)
+* asterisk:                              Fundamental Structure.
+                                                              (line  22)
+* back-reference:                        Back-references and Subexpressions.
+                                                              (line   6)
+* back-references:                       Performance.         (line  32)
+* backslash:                             The Backslash Character and Special Expressions.
+                                                              (line   6)
+* basic regular expressions:             Basic vs Extended.   (line   6)
+* before context:                        Context Line Control.
+                                                              (line  19)
+* binary files:                          File and Directory Selection.
+                                                              (line   8)
+* binary files <1>:                      File and Directory Selection.
+                                                              (line  12)
+* binary I/O:                            Other Options.       (line  22)
+* blank character class:                 Character Classes and Bracket Expressions.
+                                                              (line  41)
+* blank characters:                      Character Classes and Bracket Expressions.
+                                                              (line  41)
+* bn GREP_COLORS capability:             Environment Variables.
+                                                              (line 121)
+* braces, first argument omitted:        Fundamental Structure.
+                                                              (line  34)
+* braces, one argument:                  Fundamental Structure.
+                                                              (line  28)
+* braces, second argument omitted:       Fundamental Structure.
+                                                              (line  31)
+* braces, two arguments:                 Fundamental Structure.
+                                                              (line  38)
+* bracket expression:                    Character Classes and Bracket Expressions.
+                                                              (line   6)
+* Bugs, known:                           Known Bugs.          (line   6)
+* bugs, reporting:                       Reporting Bugs.      (line   6)
+* byte offset:                           Output Line Prefix Control.
+                                                              (line  12)
+* case insensitive search:               Matching Control.    (line  26)
+* case insensitive search <1>:           Performance.         (line  27)
+* changing name of standard input:       Output Line Prefix Control.
+                                                              (line  28)
+* character class:                       Character Classes and Bracket Expressions.
+                                                              (line   6)
+* character classes:                     Character Classes and Bracket Expressions.
+                                                              (line  30)
+* character encoding:                    Character Encoding.  (line   6)
+* character type:                        Environment Variables.
+                                                              (line 148)
+* classes of characters:                 Character Classes and Bracket Expressions.
+                                                              (line  30)
+* cntrl character class:                 Character Classes and Bracket Expressions.
+                                                              (line  44)
+* context lines:                         General Output Control.
+                                                              (line  62)
+* context lines <1>:                     Context Line Control.
+                                                              (line   6)
+* context lines <2>:                     Context Line Control.
+                                                              (line  24)
+* context lines, after match:            Context Line Control.
+                                                              (line  15)
+* context lines, before match:           Context Line Control.
+                                                              (line  19)
+* control characters:                    Character Classes and Bracket Expressions.
+                                                              (line  44)
+* copying:                               Copying.             (line   6)
+* counting lines:                        General Output Control.
+                                                              (line   8)
+* cx GREP_COLORS capability:             Environment Variables.
+                                                              (line  72)
+* device search:                         File and Directory Selection.
+                                                              (line  51)
+* digit character class:                 Character Classes and Bracket Expressions.
+                                                              (line  49)
+* digit characters:                      Character Classes and Bracket Expressions.
+                                                              (line  49)
+* directory search:                      File and Directory Selection.
+                                                              (line  62)
+* dot:                                   Fundamental Structure.
+                                                              (line  11)
+* encoding error:                        Environment Variables.
+                                                              (line 155)
+* environment variables:                 Environment Variables.
+                                                              (line  44)
+* exclude directories:                   File and Directory Selection.
+                                                              (line  87)
+* exclude files:                         File and Directory Selection.
+                                                              (line  73)
+* exclude files <1>:                     File and Directory Selection.
+                                                              (line  83)
+* exit status:                           Exit Status.         (line   6)
+* FAQ about grep usage:                  Usage.               (line  32)
+* files which don’t match:               General Output Control.
+                                                              (line  29)
+* fn GREP_COLORS capability:             Environment Variables.
+                                                              (line 111)
+* fn GREP_COLORS capability <1>:         Environment Variables.
+                                                              (line 126)
+* graph character class:                 Character Classes and Bracket Expressions.
+                                                              (line  52)
+* graphic characters:                    Character Classes and Bracket Expressions.
+                                                              (line  52)
+* grep programs:                         grep Programs.       (line   6)
+* GREP_COLOR environment variable:       Environment Variables.
+                                                              (line  45)
+* GREP_COLORS environment variable:      Environment Variables.
+                                                              (line  56)
+* group separator:                       Context Line Control.
+                                                              (line  27)
+* group separator <1>:                   Context Line Control.
+                                                              (line  31)
+* hexadecimal digits:                    Character Classes and Bracket Expressions.
+                                                              (line  76)
+* highlight markers:                     Environment Variables.
+                                                              (line  45)
+* highlight markers <1>:                 Environment Variables.
+                                                              (line  56)
+* highlight, color, colour:              General Output Control.
+                                                              (line  14)
+* holes in files:                        Performance.         (line  42)
+* include files:                         File and Directory Selection.
+                                                              (line  97)
+* interval expressions:                  Fundamental Structure.
+                                                              (line  14)
+* interval expressions <1>:              Basic vs Extended.   (line  27)
+* invert matching:                       Matching Control.    (line  51)
+* LANG environment variable:             Environment Variables.
+                                                              (line   9)
+* LANG environment variable <1>:         Environment Variables.
+                                                              (line 148)
+* LANG environment variable <2>:         Environment Variables.
+                                                              (line 155)
+* LANG environment variable <3>:         Environment Variables.
+                                                              (line 164)
+* LANGUAGE environment variable:         Environment Variables.
+                                                              (line   9)
+* LANGUAGE environment variable <1>:     Environment Variables.
+                                                              (line 164)
+* language of messages:                  Environment Variables.
+                                                              (line 164)
+* LC_ALL environment variable:           Environment Variables.
+                                                              (line   9)
+* LC_ALL environment variable <1>:       Environment Variables.
+                                                              (line 148)
+* LC_ALL environment variable <2>:       Environment Variables.
+                                                              (line 155)
+* LC_ALL environment variable <3>:       Environment Variables.
+                                                              (line 164)
+* LC_COLLATE environment variable:       Environment Variables.
+                                                              (line 148)
+* LC_CTYPE environment variable:         Environment Variables.
+                                                              (line 155)
+* LC_MESSAGES environment variable:      Environment Variables.
+                                                              (line   9)
+* LC_MESSAGES environment variable <1>:  Environment Variables.
+                                                              (line 164)
+* line buffering:                        Other Options.       (line  13)
+* line numbering:                        Output Line Prefix Control.
+                                                              (line  36)
+* ln GREP_COLORS capability:             Environment Variables.
+                                                              (line 116)
+* locales:                               Performance.         (line  20)
+* lower character class:                 Character Classes and Bracket Expressions.
+                                                              (line  55)
+* lower-case letters:                    Character Classes and Bracket Expressions.
+                                                              (line  55)
+* match expression at most M times:      Fundamental Structure.
+                                                              (line  34)
+* match expression at most once:         Fundamental Structure.
+                                                              (line  19)
+* match expression from N to M times:    Fundamental Structure.
+                                                              (line  38)
+* match expression N or more times:      Fundamental Structure.
+                                                              (line  31)
+* match expression N times:              Fundamental Structure.
+                                                              (line  28)
+* match expression one or more times:    Fundamental Structure.
+                                                              (line  25)
+* match expression zero or more times:   Fundamental Structure.
+                                                              (line  22)
+* match the whole line:                  Matching Control.    (line  73)
+* matching basic regular expressions:    grep Programs.       (line  15)
+* matching extended regular expressions: grep Programs.       (line  20)
+* matching fixed strings:                grep Programs.       (line  25)
+* matching Perl-compatible regular expressions: grep Programs.
+                                                              (line  30)
+* matching whole words:                  Matching Control.    (line  56)
+* max-count:                             General Output Control.
+                                                              (line  40)
+* mc GREP_COLORS capability:             Environment Variables.
+                                                              (line 103)
+* message language:                      Environment Variables.
+                                                              (line 164)
+* ms GREP_COLORS capability:             Environment Variables.
+                                                              (line  95)
+* MS-Windows binary I/O:                 Other Options.       (line  22)
+* mt GREP_COLORS capability:             Environment Variables.
+                                                              (line  87)
+* names of matching files:               General Output Control.
+                                                              (line  34)
+* national language support:             Environment Variables.
+                                                              (line 148)
+* national language support <1>:         Environment Variables.
+                                                              (line 164)
+* ne GREP_COLORS capability:             Environment Variables.
+                                                              (line 133)
+* NLS:                                   Environment Variables.
+                                                              (line 148)
+* no filename prefix:                    Output Line Prefix Control.
+                                                              (line  23)
+* non-ASCII matching:                    Matching Non-ASCII.  (line   6)
+* non-printable matching:                Matching Non-ASCII.  (line   6)
+* null character:                        Environment Variables.
+                                                              (line 155)
+* numeric characters:                    Character Classes and Bracket Expressions.
+                                                              (line  49)
+* only matching:                         General Output Control.
+                                                              (line  70)
+* option delimiter:                      Other Options.       (line   7)
+* ordinary characters:                   Fundamental Structure.
+                                                              (line   6)
+* patterns from file:                    Matching Control.    (line  17)
+* patterns option:                       Matching Control.    (line   8)
+* performance:                           Performance.         (line   6)
+* period:                                Fundamental Structure.
+                                                              (line  11)
+* plus sign:                             Fundamental Structure.
+                                                              (line  25)
+* POSIXLY_CORRECT environment variable:  Environment Variables.
+                                                              (line 169)
+* print character class:                 Character Classes and Bracket Expressions.
+                                                              (line  59)
+* print non-matching lines:              Matching Control.    (line  51)
+* printable characters:                  Character Classes and Bracket Expressions.
+                                                              (line  59)
+* punct character class:                 Character Classes and Bracket Expressions.
+                                                              (line  62)
+* punctuation characters:                Character Classes and Bracket Expressions.
+                                                              (line  62)
+* question mark:                         Fundamental Structure.
+                                                              (line  19)
+* quiet, silent:                         General Output Control.
+                                                              (line  78)
+* range expression:                      Character Classes and Bracket Expressions.
+                                                              (line  14)
+* recursive search:                      File and Directory Selection.
+                                                              (line 105)
+* recursive search <1>:                  File and Directory Selection.
+                                                              (line 113)
+* regular expressions:                   Regular Expressions. (line   6)
+* return status:                         Exit Status.         (line   6)
+* rv GREP_COLORS capability:             Environment Variables.
+                                                              (line  81)
+* searching directory trees:             File and Directory Selection.
+                                                              (line  73)
+* searching directory trees <1>:         File and Directory Selection.
+                                                              (line  83)
+* searching directory trees <2>:         File and Directory Selection.
+                                                              (line  97)
+* searching directory trees <3>:         File and Directory Selection.
+                                                              (line 105)
+* searching directory trees <4>:         File and Directory Selection.
+                                                              (line 113)
+* searching for patterns:                Introduction.        (line   6)
+* sl GREP_COLORS capability:             Environment Variables.
+                                                              (line  64)
+* space character class:                 Character Classes and Bracket Expressions.
+                                                              (line  67)
+* space characters:                      Character Classes and Bracket Expressions.
+                                                              (line  67)
+* special characters:                    Fundamental Structure.
+                                                              (line   6)
+* subexpression:                         Back-references and Subexpressions.
+                                                              (line   6)
+* suppress binary data:                  File and Directory Selection.
+                                                              (line   8)
+* suppress error messages:               General Output Control.
+                                                              (line  85)
+* symbolic links:                        File and Directory Selection.
+                                                              (line  62)
+* symbolic links <1>:                    File and Directory Selection.
+                                                              (line 105)
+* symbolic links <2>:                    File and Directory Selection.
+                                                              (line 113)
+* tab-aligned content lines:             Output Line Prefix Control.
+                                                              (line  41)
+* translation of message language:       Environment Variables.
+                                                              (line 164)
+* upper character class:                 Character Classes and Bracket Expressions.
+                                                              (line  72)
+* upper-case letters:                    Character Classes and Bracket Expressions.
+                                                              (line  72)
+* usage summary, printing:               Generic Program Information.
+                                                              (line   7)
+* usage, examples:                       Usage.               (line   6)
+* using grep, Q&A:                       Usage.               (line  32)
+* variants of grep:                      grep Programs.       (line   6)
+* version, printing:                     Generic Program Information.
+                                                              (line  12)
+* whitespace characters:                 Character Classes and Bracket Expressions.
+                                                              (line  67)
+* with filename prefix:                  Output Line Prefix Control.
+                                                              (line  18)
+* xdigit character class:                Character Classes and Bracket Expressions.
+                                                              (line  76)
+* xdigit class:                          Character Classes and Bracket Expressions.
+                                                              (line  76)
+* zero-terminated file names:            Output Line Prefix Control.
+                                                              (line  50)
+* zero-terminated lines:                 Other Options.       (line  43)
+
+
+
+Tag Table:
+Node: Top773
+Node: Introduction1965
+Node: Invoking2708
+Node: Command-line Options3551
+Node: Generic Program Information4434
+Node: Matching Control4908
+Node: General Output Control8537
+Ref: General Output Control-Footnote-112636
+Node: Output Line Prefix Control12705
+Node: Context Line Control15061
+Node: File and Directory Selection17124
+Node: Other Options22916
+Node: Environment Variables25129
+Node: Exit Status35125
+Node: grep Programs35603
+Node: Regular Expressions37234
+Node: Fundamental Structure38475
+Node: Character Classes and Bracket Expressions40359
+Ref: invalid-bracket-expr43984
+Node: The Backslash Character and Special Expressions45222
+Node: Anchoring46413
+Node: Back-references and Subexpressions46875
+Node: Basic vs Extended47879
+Node: Character Encoding49888
+Node: Matching Non-ASCII51354
+Node: Usage53481
+Node: Performance61173
+Node: Reporting Bugs64873
+Node: Known Bugs65250
+Node: Copying66321
+Node: GNU Free Documentation License67449
+Node: Index92754
+
+End Tag Table
+
+
+Local Variables:
+coding: utf-8
+End:
diff --git a/src/grep/doc/grep.texi b/src/grep/doc/grep.texi
new file mode 100644
index 0000000..01ac81e
--- /dev/null
+++ b/src/grep/doc/grep.texi
@@ -0,0 +1,2109 @@
+\input texinfo  @c -*-texinfo-*-
+@c %**start of header
+@setfilename grep.info
+@include version.texi
+@settitle GNU Grep @value{VERSION}
+
+@c Combine indices.
+@syncodeindex ky cp
+@syncodeindex pg cp
+@syncodeindex tp cp
+@defcodeindex op
+@syncodeindex op cp
+@syncodeindex vr cp
+@c %**end of header
+
+@documentencoding UTF-8
+@c These two require Texinfo 5.0 or later, so use the older
+@c equivalent @set variables supported in 4.11 and later.
+@ignore
+@codequotebacktick on
+@codequoteundirected on
+@end ignore
+@set txicodequoteundirected
+@set txicodequotebacktick
+@iftex
+@c TeX sometimes fails to hyphenate, so help it here.
+@hyphenation{spec-i-fied}
+@end iftex
+
+@copying
+This manual is for @command{grep}, a pattern matching engine.
+
+Copyright @copyright{} 1999--2002, 2005, 2008--2021 Free Software Foundation,
+Inc.
+
+@quotation
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the GNU Free Documentation License, Version 1.3 or
+any later version published by the Free Software Foundation; with no
+Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
+Texts.  A copy of the license is included in the section entitled
+``GNU Free Documentation License''.
+@end quotation
+@end copying
+
+@dircategory Text creation and manipulation
+@direntry
+* grep: (grep).                 Print lines that match patterns.
+@end direntry
+
+@titlepage
+@title GNU Grep: Print lines that match patterns
+@subtitle version @value{VERSION}, @value{UPDATED}
+@author Alain Magloire et al.
+@page
+@vskip 0pt plus 1filll
+@insertcopying
+@end titlepage
+
+@contents
+
+
+@ifnottex
+@node Top
+@top grep
+
+@command{grep} prints lines that contain a match for one or more patterns.
+
+This manual is for version @value{VERSION} of GNU Grep.
+
+@insertcopying
+@end ifnottex
+
+@menu
+* Introduction::                Introduction.
+* Invoking::                    Command-line options, environment, exit status.
+* Regular Expressions::         Regular Expressions.
+* Usage::                       Examples.
+* Performance::                 Performance tuning.
+* Reporting Bugs::              Reporting Bugs.
+* Copying::                     License terms for this manual.
+* Index::                       Combined index.
+@end menu
+
+
+@node Introduction
+@chapter Introduction
+
+@cindex searching for patterns
+
+Given one or more patterns, @command{grep} searches input files
+for matches to the patterns.
+When it finds a match in a line,
+it copies the line to standard output (by default),
+or produces whatever other sort of output you have requested with options.
+
+Though @command{grep} expects to do the matching on text,
+it has no limits on input line length other than available memory,
+and it can match arbitrary characters within a line.
+If the final byte of an input file is not a newline,
+@command{grep} silently supplies one.
+Since newline is also a separator for the list of patterns,
+there is no way to match newline characters in a text.
+
+
+@node Invoking
+@chapter Invoking @command{grep}
+
+The general synopsis of the @command{grep} command line is
+
+@example
+grep [@var{option}...] [@var{patterns}] [@var{file}...]
+@end example
+
+@noindent
+There can be zero or more @var{option} arguments, and zero or more
+@var{file} arguments.  The @var{patterns} argument contains one or
+more patterns separated by newlines, and is omitted when patterns are
+given via the @samp{-e@ @var{patterns}} or @samp{-f@ @var{file}}
+options.  Typically @var{patterns} should be quoted when
+@command{grep} is used in a shell command.
+
+@menu
+* Command-line Options::        Short and long names, grouped by category.
+* Environment Variables::       POSIX, GNU generic, and GNU grep specific.
+* Exit Status::                 Exit status returned by @command{grep}.
+* grep Programs::               @command{grep} programs.
+@end menu
+
+@node Command-line Options
+@section Command-line Options
+
+@command{grep} comes with a rich set of options:
+some from POSIX and some being GNU extensions.
+Long option names are always a GNU extension,
+even for options that are from POSIX specifications.
+Options that are specified by POSIX,
+under their short names,
+are explicitly marked as such
+to facilitate POSIX-portable programming.
+A few option names are provided
+for compatibility with older or more exotic implementations.
+
+@menu
+* Generic Program Information::
+* Matching Control::
+* General Output Control::
+* Output Line Prefix Control::
+* Context Line Control::
+* File and Directory Selection::
+* Other Options::
+@end menu
+
+Several additional options control
+which variant of the @command{grep} matching engine is used.
+@xref{grep Programs}.
+
+@node Generic Program Information
+@subsection Generic Program Information
+
+@table @option
+
+@item --help
+@opindex --help
+@cindex usage summary, printing
+Print a usage message briefly summarizing the command-line options
+and the bug-reporting address, then exit.
+
+@item -V
+@itemx --version
+@opindex -V
+@opindex --version
+@cindex version, printing
+Print the version number of @command{grep} to the standard output stream.
+This version number should be included in all bug reports.
+
+@end table
+
+@node Matching Control
+@subsection Matching Control
+
+@table @option
+
+@item -e @var{patterns}
+@itemx --regexp=@var{patterns}
+@opindex -e
+@opindex --regexp=@var{patterns}
+@cindex patterns option
+Use @var{patterns} as one or more patterns; newlines within
+@var{patterns} separate each pattern from the next.
+If this option is used multiple times or is combined with the
+@option{-f} (@option{--file}) option, search for all patterns given.
+Typically @var{patterns} should be quoted when @command{grep} is used
+in a shell command.
+(@option{-e} is specified by POSIX.)
+
+@item -f @var{file}
+@itemx --file=@var{file}
+@opindex -f
+@opindex --file
+@cindex patterns from file
+Obtain patterns from @var{file}, one per line.
+If this option is used multiple times or is combined with the
+@option{-e} (@option{--regexp}) option, search for all patterns given.
+The empty file contains zero patterns, and therefore matches nothing.
+(@option{-f} is specified by POSIX.)
+
+@item -i
+@itemx -y
+@itemx --ignore-case
+@opindex -i
+@opindex -y
+@opindex --ignore-case
+@cindex case insensitive search
+Ignore case distinctions in patterns and input data,
+so that characters that differ only in case
+match each other.  Although this is straightforward when letters
+differ in case only via lowercase-uppercase pairs, the behavior is
+unspecified in other situations.  For example, uppercase ``S'' has an
+unusual lowercase counterpart ``Å¿'' (Unicode character U+017F, LATIN
+SMALL LETTER LONG S) in many locales, and it is unspecified whether
+this unusual character matches ``S'' or ``s'' even though uppercasing
+it yields ``S''.  Another example: the lowercase German letter ``ß''
+(U+00DF, LATIN SMALL LETTER SHARP S) is normally capitalized as the
+two-character string ``SS'' but it does not match ``SS'', and it might
+not match the uppercase letter ``ẞ'' (U+1E9E, LATIN CAPITAL LETTER
+SHARP S) even though lowercasing the latter yields the former.
+
+@option{-y} is an obsolete synonym that is provided for compatibility.
+(@option{-i} is specified by POSIX.)
+
+@item --no-ignore-case
+@opindex --no-ignore-case
+Do not ignore case distinctions in patterns and input data.  This is
+the default.  This option is useful for passing to shell scripts that
+already use @option{-i}, in order to cancel its effects because the
+two options override each other.
+
+@item -v
+@itemx --invert-match
+@opindex -v
+@opindex --invert-match
+@cindex invert matching
+@cindex print non-matching lines
+Invert the sense of matching, to select non-matching lines.
+(@option{-v} is specified by POSIX.)
+
+@item -w
+@itemx --word-regexp
+@opindex -w
+@opindex --word-regexp
+@cindex matching whole words
+Select only those lines containing matches that form whole words.
+The test is that the matching substring must either
+be at the beginning of the line,
+or preceded by a non-word constituent character.
+Similarly,
+it must be either at the end of the line
+or followed by a non-word constituent character.
+Word constituent characters are letters, digits, and the underscore.
+This option has no effect if @option{-x} is also specified.
+
+Because the @option{-w} option can match a substring that does not
+begin and end with word constituents, it differs from surrounding a
+regular expression with @samp{\<} and @samp{\>}.  For example, although
+@samp{grep -w @@} matches a line containing only @samp{@@}, @samp{grep
+'\<@@\>'} cannot match any line because @samp{@@} is not a
+word constituent.  @xref{The Backslash Character and Special
+Expressions}.
+
+@item -x
+@itemx --line-regexp
+@opindex -x
+@opindex --line-regexp
+@cindex match the whole line
+Select only those matches that exactly match the whole line.
+For regular expression patterns, this is like parenthesizing each
+pattern and then surrounding it with @samp{^} and @samp{$}.
+(@option{-x} is specified by POSIX.)
+
+@end table
+
+@node General Output Control
+@subsection General Output Control
+
+@table @option
+
+@item -c
+@itemx --count
+@opindex -c
+@opindex --count
+@cindex counting lines
+Suppress normal output;
+instead print a count of matching lines for each input file.
+With the @option{-v} (@option{--invert-match}) option,
+count non-matching lines.
+(@option{-c} is specified by POSIX.)
+
+@item --color[=@var{WHEN}]
+@itemx --colour[=@var{WHEN}]
+@opindex --color
+@opindex --colour
+@cindex highlight, color, colour
+Surround the matched (non-empty) strings, matching lines, context lines,
+file names, line numbers, byte offsets, and separators (for fields and
+groups of context lines) with escape sequences to display them in color
+on the terminal.
+The colors are defined by the environment variable @env{GREP_COLORS}
+and default to @samp{ms=01;31:mc=01;31:sl=:cx=:fn=35:ln=32:bn=32:se=36}
+for bold red matched text, magenta file names, green line numbers,
+green byte offsets, cyan separators, and default terminal colors otherwise.
+The deprecated environment variable @env{GREP_COLOR} is still supported,
+but its setting does not have priority;
+it defaults to @samp{01;31} (bold red)
+which only covers the color for matched text.
+@var{WHEN} is @samp{never}, @samp{always}, or @samp{auto}.
+
+@item -L
+@itemx --files-without-match
+@opindex -L
+@opindex --files-without-match
+@cindex files which don't match
+Suppress normal output;
+instead print the name of each input file from which
+no output would normally have been printed.
+
+@item -l
+@itemx --files-with-matches
+@opindex -l
+@opindex --files-with-matches
+@cindex names of matching files
+Suppress normal output;
+instead print the name of each input file from which
+output would normally have been printed.
+Scanning each input file stops upon first match.
+(@option{-l} is specified by POSIX.)
+
+@item -m @var{num}
+@itemx --max-count=@var{num}
+@opindex -m
+@opindex --max-count
+@cindex max-count
+Stop after the first @var{num} selected lines.
+If the input is standard input from a regular file,
+and @var{num} selected lines are output,
+@command{grep} ensures that the standard input is positioned
+just after the last selected line before exiting,
+regardless of the presence of trailing context lines.
+This enables a calling process to resume a search.
+For example, the following shell script makes use of it:
+
+@example
+while grep -m 1 'PATTERN'
+do
+  echo xxxx
+done < FILE
+@end example
+
+But the following probably will not work because a pipe is not a regular
+file:
+
+@example
+# This probably will not work.
+cat FILE |
+while grep -m 1 'PATTERN'
+do
+  echo xxxx
+done
+@end example
+
+@cindex context lines
+When @command{grep} stops after @var{num} selected lines,
+it outputs any trailing context lines.
+When the @option{-c} or @option{--count} option is also used,
+@command{grep} does not output a count greater than @var{num}.
+When the @option{-v} or @option{--invert-match} option is also used,
+@command{grep} stops after outputting @var{num} non-matching lines.
+
+@item -o
+@itemx --only-matching
+@opindex -o
+@opindex --only-matching
+@cindex only matching
+Print only the matched (non-empty) parts of matching lines,
+with each such part on a separate output line.
+Output lines use the same delimiters as input, and delimiters are null
+bytes if @option{-z} (@option{--null-data}) is also used (@pxref{Other
+Options}).
+
+@item -q
+@itemx --quiet
+@itemx --silent
+@opindex -q
+@opindex --quiet
+@opindex --silent
+@cindex quiet, silent
+Quiet; do not write anything to standard output.
+Exit immediately with zero status if any match is found,
+even if an error was detected.
+Also see the @option{-s} or @option{--no-messages} option.
+(@option{-q} is specified by POSIX.)
+
+@item -s
+@itemx --no-messages
+@opindex -s
+@opindex --no-messages
+@cindex suppress error messages
+Suppress error messages about nonexistent or unreadable files.
+Portability note:
+unlike GNU @command{grep},
+7th Edition Unix @command{grep} did not conform to POSIX,
+because it lacked @option{-q}
+and its @option{-s} option behaved like
+GNU @command{grep}'s @option{-q} option.@footnote{Of course, 7th Edition
+Unix predated POSIX by several years!}
+USG-style @command{grep} also lacked @option{-q}
+but its @option{-s} option behaved like GNU @command{grep}'s.
+Portable shell scripts should avoid both
+@option{-q} and @option{-s} and should redirect
+standard and error output to @file{/dev/null} instead.
+(@option{-s} is specified by POSIX.)
+
+@end table
+
+@node Output Line Prefix Control
+@subsection Output Line Prefix Control
+
+When several prefix fields are to be output,
+the order is always file name, line number, and byte offset,
+regardless of the order in which these options were specified.
+
+@table @option
+
+@item -b
+@itemx --byte-offset
+@opindex -b
+@opindex --byte-offset
+@cindex byte offset
+Print the 0-based byte offset within the input file
+before each line of output.
+If @option{-o} (@option{--only-matching}) is specified,
+print the offset of the matching part itself.
+
+@item -H
+@itemx --with-filename
+@opindex -H
+@opindex --with-filename
+@cindex with filename prefix
+Print the file name for each match.
+This is the default when there is more than one file to search.
+
+@item -h
+@itemx --no-filename
+@opindex -h
+@opindex --no-filename
+@cindex no filename prefix
+Suppress the prefixing of file names on output.
+This is the default when there is only one file
+(or only standard input) to search.
+
+@item --label=@var{LABEL}
+@opindex --label
+@cindex changing name of standard input
+Display input actually coming from standard input
+as input coming from file @var{LABEL}.
+This can be useful for commands that transform a file's contents
+before searching; e.g.:
+
+@example
+gzip -cd foo.gz | grep --label=foo -H 'some pattern'
+@end example
+
+@item -n
+@itemx --line-number
+@opindex -n
+@opindex --line-number
+@cindex line numbering
+Prefix each line of output with the 1-based line number within its input file.
+(@option{-n} is specified by POSIX.)
+
+@item -T
+@itemx --initial-tab
+@opindex -T
+@opindex --initial-tab
+@cindex tab-aligned content lines
+Make sure that the first character of actual line content lies on a tab stop,
+so that the alignment of tabs looks normal.
+This is useful with options that prefix their output to the actual content:
+@option{-H}, @option{-n}, and @option{-b}.
+This may also prepend spaces to output line numbers and byte offsets
+so that lines from a single file all start at the same column.
+
+@item -Z
+@itemx --null
+@opindex -Z
+@opindex --null
+@cindex zero-terminated file names
+Output a zero byte (the ASCII NUL character)
+instead of the character that normally follows a file name.
+For example,
+@samp{grep -lZ} outputs a zero byte after each file name
+instead of the usual newline.
+This option makes the output unambiguous,
+even in the presence of file names containing unusual characters like newlines.
+This option can be used with commands like
+@samp{find -print0}, @samp{perl -0}, @samp{sort -z}, and @samp{xargs -0}
+to process arbitrary file names,
+even those that contain newline characters.
+
+@end table
+
+@node Context Line Control
+@subsection Context Line Control
+
+@cindex context lines
+@dfn{Context lines} are non-matching lines that are near a matching line.
+They are output only if one of the following options are used.
+Regardless of how these options are set,
+@command{grep} never outputs any given line more than once.
+If the @option{-o} (@option{--only-matching}) option is specified,
+these options have no effect and a warning is given upon their use.
+
+@table @option
+
+@item -A @var{num}
+@itemx --after-context=@var{num}
+@opindex -A
+@opindex --after-context
+@cindex after context
+@cindex context lines, after match
+Print @var{num} lines of trailing context after matching lines.
+
+@item -B @var{num}
+@itemx --before-context=@var{num}
+@opindex -B
+@opindex --before-context
+@cindex before context
+@cindex context lines, before match
+Print @var{num} lines of leading context before matching lines.
+
+@item -C @var{num}
+@itemx -@var{num}
+@itemx --context=@var{num}
+@opindex -C
+@opindex --context
+@opindex -@var{num}
+@cindex context lines
+Print @var{num} lines of leading and trailing output context.
+
+@item --group-separator=@var{string}
+@opindex --group-separator
+@cindex group separator
+When @option{-A}, @option{-B} or @option{-C} are in use,
+print @var{string} instead of @option{--} between groups of lines.
+
+@item --no-group-separator
+@opindex --group-separator
+@cindex group separator
+When @option{-A}, @option{-B} or @option{-C} are in use,
+do not print a separator between groups of lines.
+
+@end table
+
+Here are some points about how @command{grep} chooses
+the separator to print between prefix fields and line content:
+
+@itemize @bullet
+@item
+Matching lines normally use @samp{:} as a separator
+between prefix fields and actual line content.
+
+@item
+Context (i.e., non-matching) lines use @samp{-} instead.
+
+@item
+When context is not specified,
+matching lines are simply output one right after another.
+
+@item
+When context is specified,
+lines that are adjacent in the input form a group
+and are output one right after another, while
+by default a separator appears between non-adjacent groups.
+
+@item
+The default separator
+is a @samp{--} line; its presence and appearance
+can be changed with the options above.
+
+@item
+Each group may contain
+several matching lines when they are close enough to each other
+that two adjacent groups connect and can merge into a single
+contiguous one.
+@end itemize
+
+@node File and Directory Selection
+@subsection File and Directory Selection
+
+@table @option
+
+@item -a
+@itemx --text
+@opindex -a
+@opindex --text
+@cindex suppress binary data
+@cindex binary files
+Process a binary file as if it were text;
+this is equivalent to the @samp{--binary-files=text} option.
+
+@item --binary-files=@var{type}
+@opindex --binary-files
+@cindex binary files
+If a file's data or metadata
+indicate that the file contains binary data,
+assume that the file is of type @var{type}.
+Non-text bytes indicate binary data; these are either output bytes that are
+improperly encoded for the current locale (@pxref{Environment
+Variables}), or null input bytes when the
+@option{-z} (@option{--null-data}) option is not given (@pxref{Other
+Options}).
+
+By default, @var{type} is @samp{binary}, and @command{grep}
+suppresses output after null input binary data is discovered,
+and suppresses output lines that contain improperly encoded data.
+When some output is suppressed, @command{grep} follows any output
+with a one-line message saying that a binary file matches.
+
+If @var{type} is @samp{without-match},
+when @command{grep} discovers null input binary data
+it assumes that the rest of the file does not match;
+this is equivalent to the @option{-I} option.
+
+If @var{type} is @samp{text},
+@command{grep} processes binary data as if it were text;
+this is equivalent to the @option{-a} option.
+
+When @var{type} is @samp{binary}, @command{grep} may treat non-text
+bytes as line terminators even without the @option{-z}
+(@option{--null-data}) option.  This means choosing @samp{binary}
+versus @samp{text} can affect whether a pattern matches a file.  For
+example, when @var{type} is @samp{binary} the pattern @samp{q$} might
+match @samp{q} immediately followed by a null byte, even though this
+is not matched when @var{type} is @samp{text}.  Conversely, when
+@var{type} is @samp{binary} the pattern @samp{.} (period) might not
+match a null byte.
+
+@emph{Warning:} The @option{-a} (@option{--binary-files=text}) option
+might output binary garbage, which can have nasty side effects if the
+output is a terminal and if the terminal driver interprets some of it
+as commands.  On the other hand, when reading files whose text
+encodings are unknown, it can be helpful to use @option{-a} or to set
+@samp{LC_ALL='C'} in the environment, in order to find more matches
+even if the matches are unsafe for direct display.
+
+@item -D @var{action}
+@itemx --devices=@var{action}
+@opindex -D
+@opindex --devices
+@cindex device search
+If an input file is a device, FIFO, or socket, use @var{action} to process it.
+If @var{action} is @samp{read},
+all devices are read just as if they were ordinary files.
+If @var{action} is @samp{skip},
+devices, FIFOs, and sockets are silently skipped.
+By default, devices are read if they are on the command line or if the
+@option{-R} (@option{--dereference-recursive}) option is used, and are
+skipped if they are encountered recursively and the @option{-r}
+(@option{--recursive}) option is used.
+This option has no effect on a file that is read via standard input.
+
+@item -d @var{action}
+@itemx --directories=@var{action}
+@opindex -d
+@opindex --directories
+@cindex directory search
+@cindex symbolic links
+If an input file is a directory, use @var{action} to process it.
+By default, @var{action} is @samp{read},
+which means that directories are read just as if they were ordinary files
+(some operating systems and file systems disallow this,
+and will cause @command{grep}
+to print error messages for every directory or silently skip them).
+If @var{action} is @samp{skip}, directories are silently skipped.
+If @var{action} is @samp{recurse},
+@command{grep} reads all files under each directory, recursively,
+following command-line symbolic links and skipping other symlinks;
+this is equivalent to the @option{-r} option.
+
+@item --exclude=@var{glob}
+@opindex --exclude
+@cindex exclude files
+@cindex searching directory trees
+Skip any command-line file with a name suffix that matches the pattern
+@var{glob}, using wildcard matching; a name suffix is either the whole
+name, or a trailing part that starts with a non-slash character
+immediately after a slash (@samp{/}) in the name.
+When searching recursively, skip any subfile whose base
+name matches @var{glob}; the base name is the part after the last
+slash.  A pattern can use
+@samp{*}, @samp{?}, and @samp{[}...@samp{]} as wildcards,
+and @code{\} to quote a wildcard or backslash character literally.
+
+@item --exclude-from=@var{file}
+@opindex --exclude-from
+@cindex exclude files
+@cindex searching directory trees
+Skip files whose name matches any of the patterns
+read from @var{file} (using wildcard matching as described
+under @option{--exclude}).
+
+@item --exclude-dir=@var{glob}
+@opindex --exclude-dir
+@cindex exclude directories
+Skip any command-line directory with a name suffix that matches the
+pattern @var{glob}.  When searching recursively, skip any subdirectory
+whose base name matches @var{glob}.  Ignore any redundant trailing
+slashes in @var{glob}.
+
+@item -I
+Process a binary file as if it did not contain matching data;
+this is equivalent to the @samp{--binary-files=without-match} option.
+
+@item --include=@var{glob}
+@opindex --include
+@cindex include files
+@cindex searching directory trees
+Search only files whose name matches @var{glob},
+using wildcard matching as described under @option{--exclude}.
+If contradictory @option{--include} and @option{--exclude} options are
+given, the last matching one wins.  If no @option{--include} or
+@option{--exclude} options match, a file is included unless the first
+such option is @option{--include}.
+
+@item -r
+@itemx --recursive
+@opindex -r
+@opindex --recursive
+@cindex recursive search
+@cindex searching directory trees
+@cindex symbolic links
+For each directory operand,
+read and process all files in that directory, recursively.
+Follow symbolic links on the command line, but skip symlinks
+that are encountered recursively.
+Note that if no file operand is given, grep searches the working directory.
+This is the same as the @samp{--directories=recurse} option.
+
+@item -R
+@itemx --dereference-recursive
+@opindex -R
+@opindex --dereference-recursive
+@cindex recursive search
+@cindex searching directory trees
+@cindex symbolic links
+For each directory operand, read and process all files in that
+directory, recursively, following all symbolic links.
+
+@end table
+
+@node Other Options
+@subsection Other Options
+
+@table @option
+
+@item --
+@opindex --
+@cindex option delimiter
+Delimit the option list.  Later arguments, if any, are treated as
+operands even if they begin with @samp{-}.  For example, @samp{grep PAT --
+-file1 file2} searches for the pattern PAT in the files named @file{-file1}
+and @file{file2}.
+
+@item --line-buffered
+@opindex --line-buffered
+@cindex line buffering
+Use line buffering for standard output, regardless of output device.
+By default, standard output is line buffered for interactive devices,
+and is fully buffered otherwise.  With full buffering, the output
+buffer is flushed when full; with line buffering, the buffer is also
+flushed after every output line.  The buffer size is system dependent.
+
+@item -U
+@itemx --binary
+@opindex -U
+@opindex --binary
+@cindex MS-Windows binary I/O
+@cindex binary I/O
+On platforms that distinguish between text and binary I/O,
+use the latter when reading and writing files other
+than the user's terminal, so that all input bytes are read and written
+as-is.  This overrides the default behavior where @command{grep}
+follows the operating system's advice whether to use text or binary
+I/O@.  On MS-Windows when @command{grep} uses text I/O it reads a
+carriage return--newline pair as a newline and a Control-Z as
+end-of-file, and it writes a newline as a carriage return--newline
+pair.
+
+When using text I/O @option{--byte-offset} (@option{-b}) counts and
+@option{--binary-files} heuristics apply to input data after text-I/O
+processing.  Also, the @option{--binary-files} heuristics need not agree
+with the @option{--binary} option; that is, they may treat the data as
+text even if @option{--binary} is given, or vice versa.
+@xref{File and Directory Selection}.
+
+This option has no effect on GNU and other POSIX-compatible platforms,
+which do not distinguish text from binary I/O.
+
+@item -z
+@itemx --null-data
+@opindex -z
+@opindex --null-data
+@cindex zero-terminated lines
+Treat input and output data as sequences of lines, each terminated by
+a zero byte (the ASCII NUL character) instead of a newline.
+Like the @option{-Z} or @option{--null} option,
+this option can be used with commands like
+@samp{sort -z} to process arbitrary file names.
+
+@end table
+
+@node Environment Variables
+@section Environment Variables
+
+The behavior of @command{grep} is affected
+by the following environment variables.
+
+@vindex LANGUAGE @r{environment variable}
+@vindex LC_ALL @r{environment variable}
+@vindex LC_MESSAGES @r{environment variable}
+@vindex LANG @r{environment variable}
+The locale for category @w{@code{LC_@var{foo}}}
+is specified by examining the three environment variables
+@env{LC_ALL}, @w{@env{LC_@var{foo}}}, and @env{LANG},
+in that order.
+The first of these variables that is set specifies the locale.
+For example, if @env{LC_ALL} is not set,
+but @env{LC_COLLATE} is set to @samp{pt_BR},
+then the Brazilian Portuguese locale is used
+for the @env{LC_COLLATE} category.
+As a special case for @env{LC_MESSAGES} only, the environment variable
+@env{LANGUAGE} can contain a colon-separated list of languages that
+overrides the three environment variables that ordinarily specify
+the @env{LC_MESSAGES} category.
+The @samp{C} locale is used if none of these environment variables are set,
+if the locale catalog is not installed,
+or if @command{grep} was not compiled
+with national language support (NLS).
+The shell command @code{locale -a} lists locales that are currently available.
+
+Many of the environment variables in the following list let you
+control highlighting using
+Select Graphic Rendition (SGR)
+commands interpreted by the terminal or terminal emulator.
+(See the
+section
+in the documentation of your text terminal
+for permitted values and their meanings as character attributes.)
+These substring values are integers in decimal representation
+and can be concatenated with semicolons.
+@command{grep} takes care of assembling the result
+into a complete SGR sequence (@samp{\33[}...@samp{m}).
+Common values to concatenate include
+@samp{1} for bold,
+@samp{4} for underline,
+@samp{5} for blink,
+@samp{7} for inverse,
+@samp{39} for default foreground color,
+@samp{30} to @samp{37} for foreground colors,
+@samp{90} to @samp{97} for 16-color mode foreground colors,
+@samp{38;5;0} to @samp{38;5;255}
+for 88-color and 256-color modes foreground colors,
+@samp{49} for default background color,
+@samp{40} to @samp{47} for background colors,
+@samp{100} to @samp{107} for 16-color mode background colors,
+and @samp{48;5;0} to @samp{48;5;255}
+for 88-color and 256-color modes background colors.
+
+The two-letter names used in the @env{GREP_COLORS} environment variable
+(and some of the others) refer to terminal ``capabilities,'' the ability
+of a terminal to highlight text, or change its color, and so on.
+These capabilities are stored in an online database and accessed by
+the @code{terminfo} library.
+
+@cindex environment variables
+
+@table @env
+
+@item GREP_COLOR
+@vindex GREP_COLOR @r{environment variable}
+@cindex highlight markers
+This variable specifies the color used to highlight matched (non-empty) text.
+It is deprecated in favor of @env{GREP_COLORS}, but still supported.
+The @samp{mt}, @samp{ms}, and @samp{mc} capabilities of @env{GREP_COLORS}
+have priority over it.
+It can only specify the color used to highlight
+the matching non-empty text in any matching line
+(a selected line when the @option{-v} command-line option is omitted,
+or a context line when @option{-v} is specified).
+The default is @samp{01;31},
+which means a bold red foreground text on the terminal's default background.
+
+@item GREP_COLORS
+@vindex GREP_COLORS @r{environment variable}
+@cindex highlight markers
+This variable specifies the colors and other attributes
+used to highlight various parts of the output.
+Its value is a colon-separated list of @code{terminfo} capabilities
+that defaults to @samp{ms=01;31:mc=01;31:sl=:cx=:fn=35:ln=32:bn=32:se=36}
+with the @samp{rv} and @samp{ne} boolean capabilities omitted (i.e., false).
+Supported capabilities are as follows.
+
+@table @code
+@item sl=
+@vindex sl GREP_COLORS @r{capability}
+SGR substring for whole selected lines
+(i.e.,
+matching lines when the @option{-v} command-line option is omitted,
+or non-matching lines when @option{-v} is specified).
+If however the boolean @samp{rv} capability
+and the @option{-v} command-line option are both specified,
+it applies to context matching lines instead.
+The default is empty (i.e., the terminal's default color pair).
+
+@item cx=
+@vindex cx GREP_COLORS @r{capability}
+SGR substring for whole context lines
+(i.e.,
+non-matching lines when the @option{-v} command-line option is omitted,
+or matching lines when @option{-v} is specified).
+If however the boolean @samp{rv} capability
+and the @option{-v} command-line option are both specified,
+it applies to selected non-matching lines instead.
+The default is empty (i.e., the terminal's default color pair).
+
+@item rv
+@vindex rv GREP_COLORS @r{capability}
+Boolean value that reverses (swaps) the meanings of
+the @samp{sl=} and @samp{cx=} capabilities
+when the @option{-v} command-line option is specified.
+The default is false (i.e., the capability is omitted).
+
+@item mt=01;31
+@vindex mt GREP_COLORS @r{capability}
+SGR substring for matching non-empty text in any matching line
+(i.e.,
+a selected line when the @option{-v} command-line option is omitted,
+or a context line when @option{-v} is specified).
+Setting this is equivalent to setting both @samp{ms=} and @samp{mc=}
+at once to the same value.
+The default is a bold red text foreground over the current line background.
+
+@item ms=01;31
+@vindex ms GREP_COLORS @r{capability}
+SGR substring for matching non-empty text in a selected line.
+(This is used only when the @option{-v} command-line option is omitted.)
+The effect of the @samp{sl=} (or @samp{cx=} if @samp{rv}) capability
+remains active when this takes effect.
+The default is a bold red text foreground over the current line background.
+
+@item mc=01;31
+@vindex mc GREP_COLORS @r{capability}
+SGR substring for matching non-empty text in a context line.
+(This is used only when the @option{-v} command-line option is specified.)
+The effect of the @samp{cx=} (or @samp{sl=} if @samp{rv}) capability
+remains active when this takes effect.
+The default is a bold red text foreground over the current line background.
+
+@item fn=35
+@vindex fn GREP_COLORS @r{capability}
+SGR substring for file names prefixing any content line.
+The default is a magenta text foreground over the terminal's default background.
+
+@item ln=32
+@vindex ln GREP_COLORS @r{capability}
+SGR substring for line numbers prefixing any content line.
+The default is a green text foreground over the terminal's default background.
+
+@item bn=32
+@vindex bn GREP_COLORS @r{capability}
+SGR substring for byte offsets prefixing any content line.
+The default is a green text foreground over the terminal's default background.
+
+@item se=36
+@vindex fn GREP_COLORS @r{capability}
+SGR substring for separators that are inserted
+between selected line fields (@samp{:}),
+between context line fields (@samp{-}),
+and between groups of adjacent lines
+when nonzero context is specified (@samp{--}).
+The default is a cyan text foreground over the terminal's default background.
+
+@item ne
+@vindex ne GREP_COLORS @r{capability}
+Boolean value that prevents clearing to the end of line
+using Erase in Line (EL) to Right (@samp{\33[K})
+each time a colorized item ends.
+This is needed on terminals on which EL is not supported.
+It is otherwise useful on terminals
+for which the @code{back_color_erase}
+(@code{bce}) boolean @code{terminfo} capability does not apply,
+when the chosen highlight colors do not affect the background,
+or when EL is too slow or causes too much flicker.
+The default is false (i.e., the capability is omitted).
+@end table
+
+Note that boolean capabilities have no @samp{=}... part.
+They are omitted (i.e., false) by default and become true when specified.
+
+
+@item LC_ALL
+@itemx LC_COLLATE
+@itemx LANG
+@vindex LC_ALL @r{environment variable}
+@vindex LC_COLLATE @r{environment variable}
+@vindex LANG @r{environment variable}
+@cindex character type
+@cindex national language support
+@cindex NLS
+These variables specify the locale for the @env{LC_COLLATE} category,
+which might affect how range expressions like @samp{[a-z]} are
+interpreted.
+
+@item LC_ALL
+@itemx LC_CTYPE
+@itemx LANG
+@vindex LC_ALL @r{environment variable}
+@vindex LC_CTYPE @r{environment variable}
+@vindex LANG @r{environment variable}
+@cindex encoding error
+@cindex null character
+These variables specify the locale for the @env{LC_CTYPE} category,
+which determines the type of characters,
+e.g., which characters are whitespace.
+This category also determines the character encoding.
+@xref{Character Encoding}.
+
+@item LANGUAGE
+@itemx LC_ALL
+@itemx LC_MESSAGES
+@itemx LANG
+@vindex LANGUAGE @r{environment variable}
+@vindex LC_ALL @r{environment variable}
+@vindex LC_MESSAGES @r{environment variable}
+@vindex LANG @r{environment variable}
+@cindex language of messages
+@cindex message language
+@cindex national language support
+@cindex translation of message language
+These variables specify the locale for the @env{LC_MESSAGES} category,
+which determines the language that @command{grep} uses for messages.
+The default @samp{C} locale uses American English messages.
+
+@item POSIXLY_CORRECT
+@vindex POSIXLY_CORRECT @r{environment variable}
+If set, @command{grep} behaves as POSIX requires; otherwise,
+@command{grep} behaves more like other GNU programs.
+POSIX
+requires that options that
+follow file names must be treated as file names;
+by default,
+such options are permuted to the front of the operand list
+and are treated as options.
+Also, @env{POSIXLY_CORRECT} disables special handling of an
+invalid bracket expression.  @xref{invalid-bracket-expr}.
+
+@item _@var{N}_GNU_nonoption_argv_flags_
+@vindex _@var{N}_GNU_nonoption_argv_flags_ @r{environment variable}
+(Here @code{@var{N}} is @command{grep}'s numeric process ID.)
+If the @var{i}th character of this environment variable's value is @samp{1},
+do not consider the @var{i}th operand of @command{grep} to be an option,
+even if it appears to be one.
+A shell can put this variable in the environment for each command it runs,
+specifying which operands are the results of file name wildcard expansion
+and therefore should not be treated as options.
+This behavior is available only with the GNU C library,
+and only when @env{POSIXLY_CORRECT} is not set.
+
+@end table
+
+The @env{GREP_OPTIONS} environment variable of @command{grep} 2.20 and
+earlier is no longer supported, as it caused problems when writing
+portable scripts.  To make arbitrary changes to how @command{grep}
+works, you can use an alias or script instead.  For example, if
+@command{grep} is in the directory @samp{/usr/bin} you can prepend
+@file{$HOME/bin} to your @env{PATH} and create an executable script
+@file{$HOME/bin/grep} containing the following:
+
+@example
+#! /bin/sh
+export PATH=/usr/bin
+exec grep --color=auto --devices=skip "$@@"
+@end example
+
+
+@node Exit Status
+@section Exit Status
+@cindex exit status
+@cindex return status
+
+Normally the exit status is 0 if a line is selected, 1 if no lines
+were selected, and 2 if an error occurred.  However, if the
+@option{-q} or @option{--quiet} or @option{--silent} option is used
+and a line is selected, the exit status is 0 even if an error
+occurred.  Other @command{grep} implementations may exit with status
+greater than 2 on error.
+
+@node grep Programs
+@section @command{grep} Programs
+@cindex @command{grep} programs
+@cindex variants of @command{grep}
+
+@command{grep} searches the named input files
+for lines containing a match to the given patterns.
+By default, @command{grep} prints the matching lines.
+A file named @file{-} stands for standard input.
+If no input is specified, @command{grep} searches the working
+directory @file{.} if given a command-line option specifying
+recursion; otherwise, @command{grep} searches standard input.
+There are four major variants of @command{grep},
+controlled by the following options.
+
+@table @option
+
+@item -G
+@itemx --basic-regexp
+@opindex -G
+@opindex --basic-regexp
+@cindex matching basic regular expressions
+Interpret patterns as basic regular expressions (BREs).
+This is the default.
+
+@item -E
+@itemx --extended-regexp
+@opindex -E
+@opindex --extended-regexp
+@cindex matching extended regular expressions
+Interpret patterns as extended regular expressions (EREs).
+(@option{-E} is specified by POSIX.)
+
+@item -F
+@itemx --fixed-strings
+@opindex -F
+@opindex --fixed-strings
+@cindex matching fixed strings
+Interpret patterns as fixed strings, not regular expressions.
+(@option{-F} is specified by POSIX.)
+
+@item -P
+@itemx --perl-regexp
+@opindex -P
+@opindex --perl-regexp
+@cindex matching Perl-compatible regular expressions
+Interpret patterns as Perl-compatible regular expressions (PCREs).
+PCRE support is here to stay, but consider this option experimental when
+combined with the @option{-z} (@option{--null-data}) option, and note that
+@samp{grep@ -P} may warn of unimplemented features.
+@xref{Other Options}.
+
+@end table
+
+In addition,
+two variant programs @command{egrep} and @command{fgrep} are available.
+@command{egrep} is the same as @samp{grep@ -E}.
+@command{fgrep} is the same as @samp{grep@ -F}.
+Direct invocation as either
+@command{egrep} or @command{fgrep} is deprecated,
+but is provided to allow historical applications
+that rely on them to run unmodified.
+
+
+@node Regular Expressions
+@chapter Regular Expressions
+@cindex regular expressions
+
+A @dfn{regular expression} is a pattern that describes a set of strings.
+Regular expressions are constructed analogously to arithmetic expressions,
+by using various operators to combine smaller expressions.
+@command{grep} understands
+three different versions of regular expression syntax:
+basic (BRE), extended (ERE), and Perl-compatible (PCRE).
+In GNU @command{grep},
+there is no difference in available functionality between the basic and
+extended syntaxes.
+In other implementations, basic regular expressions are less powerful.
+The following description applies to extended regular expressions;
+differences for basic regular expressions are summarized afterwards.
+Perl-compatible regular expressions give additional functionality, and
+are documented in the @i{pcresyntax}(3) and @i{pcrepattern}(3) manual
+pages, but work only if PCRE is available in the system.
+
+@menu
+* Fundamental Structure::
+* Character Classes and Bracket Expressions::
+* The Backslash Character and Special Expressions::
+* Anchoring::
+* Back-references and Subexpressions::
+* Basic vs Extended::
+* Character Encoding::
+* Matching Non-ASCII::
+@end menu
+
+@node Fundamental Structure
+@section Fundamental Structure
+
+@cindex ordinary characters
+@cindex special characters
+In regular expressions, the characters @samp{.?*+@{|()[\^$} are
+@dfn{special characters} and have uses described below.  All other
+characters are @dfn{ordinary characters}, and each ordinary character
+is a regular expression that matches itself.
+
+@opindex .
+@cindex dot
+@cindex period
+The period @samp{.} matches any single character.
+It is unspecified whether @samp{.} matches an encoding error.
+
+@cindex interval expressions
+A regular expression may be followed by one of several
+repetition operators; the operators beginning with @samp{@{}
+are called @dfn{interval expressions}.
+
+@table @samp
+
+@item ?
+@opindex ?
+@cindex question mark
+@cindex match expression at most once
+The preceding item is optional and is matched at most once.
+
+@item *
+@opindex *
+@cindex asterisk
+@cindex match expression zero or more times
+The preceding item is matched zero or more times.
+
+@item +
+@opindex +
+@cindex plus sign
+@cindex match expression one or more times
+The preceding item is matched one or more times.
+
+@item @{@var{n}@}
+@opindex @{@var{n}@}
+@cindex braces, one argument
+@cindex match expression @var{n} times
+The preceding item is matched exactly @var{n} times.
+
+@item @{@var{n},@}
+@opindex @{@var{n},@}
+@cindex braces, second argument omitted
+@cindex match expression @var{n} or more times
+The preceding item is matched @var{n} or more times.
+
+@item @{,@var{m}@}
+@opindex @{,@var{m}@}
+@cindex braces, first argument omitted
+@cindex match expression at most @var{m} times
+The preceding item is matched at most @var{m} times.
+This is a GNU extension.
+
+@item @{@var{n},@var{m}@}
+@opindex @{@var{n},@var{m}@}
+@cindex braces, two arguments
+@cindex match expression from @var{n} to @var{m} times
+The preceding item is matched at least @var{n} times, but not more than
+@var{m} times.
+
+@end table
+
+The empty regular expression matches the empty string.
+Two regular expressions may be concatenated;
+the resulting regular expression
+matches any string formed by concatenating two substrings
+that respectively match the concatenated expressions.
+
+Two regular expressions may be joined by the infix operator @samp{|};
+the resulting regular expression
+matches any string matching either alternate expression.
+
+Repetition takes precedence over concatenation,
+which in turn takes precedence over alternation.
+A whole expression may be enclosed in parentheses
+to override these precedence rules and form a subexpression.
+An unmatched @samp{)} matches just itself.
+
+@node Character Classes and Bracket Expressions
+@section Character Classes and Bracket Expressions
+
+@cindex bracket expression
+@cindex character class
+A @dfn{bracket expression} is a list of characters enclosed by @samp{[} and
+@samp{]}.
+It matches any single character in that list.
+If the first character of the list is the caret @samp{^},
+then it matches any character @strong{not} in the list,
+and it is unspecified whether it matches an encoding error.
+For example, the regular expression
+@samp{[0123456789]} matches any single digit,
+whereas @samp{[^()]} matches any single character that is not
+an opening or closing parenthesis, and might or might not match an
+encoding error.
+
+@cindex range expression
+Within a bracket expression, a @dfn{range expression} consists of two
+characters separated by a hyphen.
+It matches any single character that
+sorts between the two characters, inclusive.
+In the default C locale, the sorting sequence is the native character
+order; for example, @samp{[a-d]} is equivalent to @samp{[abcd]}.
+In other locales, the sorting sequence is not specified, and
+@samp{[a-d]} might be equivalent to @samp{[abcd]} or to
+@samp{[aBbCcDd]}, or it might fail to match any character, or the set of
+characters that it matches might even be erratic.
+To obtain the traditional interpretation
+of bracket expressions, you can use the @samp{C} locale by setting the
+@env{LC_ALL} environment variable to the value @samp{C}.
+
+Finally, certain named classes of characters are predefined within
+bracket expressions, as follows.
+Their interpretation depends on the @env{LC_CTYPE} locale;
+for example, @samp{[[:alnum:]]} means the character class of numbers and letters
+in the current locale.
+
+@cindex classes of characters
+@cindex character classes
+@table @samp
+
+@item [:alnum:]
+@opindex alnum @r{character class}
+@cindex alphanumeric characters
+Alphanumeric characters:
+@samp{[:alpha:]} and @samp{[:digit:]}; in the @samp{C} locale and ASCII
+character encoding, this is the same as @samp{[0-9A-Za-z]}.
+
+@item [:alpha:]
+@opindex alpha @r{character class}
+@cindex alphabetic characters
+Alphabetic characters:
+@samp{[:lower:]} and @samp{[:upper:]}; in the @samp{C} locale and ASCII
+character encoding, this is the same as @samp{[A-Za-z]}.
+
+@item [:blank:]
+@opindex blank @r{character class}
+@cindex blank characters
+Blank characters:
+space and tab.
+
+@item [:cntrl:]
+@opindex cntrl @r{character class}
+@cindex control characters
+Control characters.
+In ASCII, these characters have octal codes 000
+through 037, and 177 (DEL).
+In other character sets, these are
+the equivalent characters, if any.
+
+@item [:digit:]
+@opindex digit @r{character class}
+@cindex digit characters
+@cindex numeric characters
+Digits: @code{0 1 2 3 4 5 6 7 8 9}.
+
+@item [:graph:]
+@opindex graph @r{character class}
+@cindex graphic characters
+Graphical characters:
+@samp{[:alnum:]} and @samp{[:punct:]}.
+
+@item [:lower:]
+@opindex lower @r{character class}
+@cindex lower-case letters
+Lower-case letters; in the @samp{C} locale and ASCII character
+encoding, this is
+@code{a b c d e f g h i j k l m n o p q r s t u v w x y z}.
+
+@item [:print:]
+@opindex print @r{character class}
+@cindex printable characters
+Printable characters:
+@samp{[:alnum:]}, @samp{[:punct:]}, and space.
+
+@item [:punct:]
+@opindex punct @r{character class}
+@cindex punctuation characters
+Punctuation characters; in the @samp{C} locale and ASCII character
+encoding, this is
+@code{!@: " # $ % & ' ( ) * + , - .@: / : ; < = > ?@: @@ [ \ ] ^ _ ` @{ | @} ~}.
+
+@item [:space:]
+@opindex space @r{character class}
+@cindex space characters
+@cindex whitespace characters
+Space characters: in the @samp{C} locale, this is
+tab, newline, vertical tab, form feed, carriage return, and space.
+@xref{Usage}, for more discussion of matching newlines.
+
+@item [:upper:]
+@opindex upper @r{character class}
+@cindex upper-case letters
+Upper-case letters: in the @samp{C} locale and ASCII character
+encoding, this is
+@code{A B C D E F G H I J K L M N O P Q R S T U V W X Y Z}.
+
+@item [:xdigit:]
+@opindex xdigit @r{character class}
+@cindex xdigit class
+@cindex hexadecimal digits
+Hexadecimal digits:
+@code{0 1 2 3 4 5 6 7 8 9 A B C D E F a b c d e f}.
+
+@end table
+Note that the brackets in these class names are
+part of the symbolic names, and must be included in addition to
+the brackets delimiting the bracket expression.
+
+@anchor{invalid-bracket-expr}
+If you mistakenly omit the outer brackets, and search for say, @samp{[:upper:]},
+GNU @command{grep} prints a diagnostic and exits with status 2, on
+the assumption that you did not intend to search for the nominally
+equivalent regular expression: @samp{[:epru]}.
+Set the @env{POSIXLY_CORRECT} environment variable to disable this feature.
+
+Special characters lose their special meaning inside bracket expressions.
+
+@table @samp
+@item ]
+ends the bracket expression if it's not the first list item.
+So, if you want to make the @samp{]} character a list item,
+you must put it first.
+
+@item [.
+represents the open collating symbol.
+
+@item .]
+represents the close collating symbol.
+
+@item [=
+represents the open equivalence class.
+
+@item =]
+represents the close equivalence class.
+
+@item [:
+represents the open character class symbol, and should be followed by a
+valid character class name.
+
+@item :]
+represents the close character class symbol.
+
+@item -
+represents the range if it's not first or last in a list or the ending point
+of a range.
+
+@item ^
+represents the characters not in the list.
+If you want to make the @samp{^}
+character a list item, place it anywhere but first.
+
+@end table
+
+@node The Backslash Character and Special Expressions
+@section The Backslash Character and Special Expressions
+@cindex backslash
+
+The @samp{\} character followed by a special character is a regular
+expression that matches the special character.
+The @samp{\} character,
+when followed by certain ordinary characters,
+takes a special meaning:
+
+@table @samp
+
+@item \b
+Match the empty string at the edge of a word.
+
+@item \B
+Match the empty string provided it's not at the edge of a word.
+
+@item \<
+Match the empty string at the beginning of a word.
+
+@item \>
+Match the empty string at the end of a word.
+
+@item \w
+Match word constituent, it is a synonym for @samp{[_[:alnum:]]}.
+
+@item \W
+Match non-word constituent, it is a synonym for @samp{[^_[:alnum:]]}.
+
+@item \s
+Match whitespace, it is a synonym for @samp{[[:space:]]}.
+
+@item \S
+Match non-whitespace, it is a synonym for @samp{[^[:space:]]}.
+
+@end table
+
+For example, @samp{\brat\b} matches the separate word @samp{rat},
+@samp{\Brat\B} matches @samp{crate} but not @samp{furry rat}.
+
+@node Anchoring
+@section Anchoring
+@cindex anchoring
+
+The caret @samp{^} and the dollar sign @samp{$} are special characters that
+respectively match the empty string at the beginning and end of a line.
+They are termed @dfn{anchors}, since they force the match to be ``anchored''
+to beginning or end of a line, respectively.
+
+@node Back-references and Subexpressions
+@section Back-references and Subexpressions
+@cindex subexpression
+@cindex back-reference
+
+The back-reference @samp{\@var{n}},
+where @var{n} is a single nonzero digit, matches
+the substring previously matched by the @var{n}th parenthesized subexpression
+of the regular expression.
+For example, @samp{(a)\1} matches @samp{aa}.
+If the parenthesized subexpression does not participate in the match,
+the back-reference makes the whole match fail;
+for example, @samp{(a)*\1} fails to match @samp{a}.
+If the parenthesized subexpression matches more than one substring,
+the back-reference refers to the last matched substring;
+for example, @samp{^(ab*)*\1$} matches @samp{ababbabb} but not @samp{ababbab}.
+When multiple regular expressions are given with
+@option{-e} or from a file (@samp{-f @var{file}}),
+back-references are local to each expression.
+
+@xref{Known Bugs}, for some known problems with back-references.
+
+@node Basic vs Extended
+@section Basic vs Extended Regular Expressions
+@cindex basic regular expressions
+
+In basic regular expressions the characters @samp{?}, @samp{+},
+@samp{@{}, @samp{|}, @samp{(}, and @samp{)} lose their special meaning;
+instead use the backslashed versions @samp{\?}, @samp{\+}, @samp{\@{},
+@samp{\|}, @samp{\(}, and @samp{\)}.  Also, a backslash is needed
+before an interval expression's closing @samp{@}}, and an unmatched
+@code{\)} is invalid.
+
+Portable scripts should avoid the following constructs, as
+POSIX says they produce undefined results:
+
+@itemize @bullet
+@item
+Extended regular expressions that use back-references.
+@item
+Basic regular expressions that use @samp{\?}, @samp{\+}, or @samp{\|}.
+@item
+Empty parenthesized regular expressions like @samp{()}.
+@item
+Empty alternatives (as in, e.g, @samp{a|}).
+@item
+Repetition operators that immediately follow empty expressions,
+unescaped @samp{$}, or other repetition operators.
+@item
+A backslash escaping an ordinary character (e.g., @samp{\S}),
+unless it is a back-reference.
+@item
+An unescaped @samp{[} that is not part of a bracket expression.
+@item
+In extended regular expressions, an unescaped @samp{@{} that is not
+part of an interval expression.
+@end itemize
+
+@cindex interval expressions
+Traditional @command{egrep} did not support interval expressions and
+some @command{egrep} implementations use @samp{\@{} and @samp{\@}} instead, so
+portable scripts should avoid interval expressions in @samp{grep@ -E} patterns
+and should use @samp{[@{]} to match a literal @samp{@{}.
+
+GNU @command{grep@ -E} attempts to support traditional usage by
+assuming that @samp{@{} is not special if it would be the start of an
+invalid interval expression.
+For example, the command
+@samp{grep@ -E@ '@{1'} searches for the two-character string @samp{@{1}
+instead of reporting a syntax error in the regular expression.
+POSIX allows this behavior as an extension, but portable scripts
+should avoid it.
+
+@node Character Encoding
+@section Character Encoding
+@cindex character encoding
+
+The @env{LC_CTYPE} locale specifies the encoding of characters in
+patterns and data, that is, whether text is encoded in UTF-8, ASCII,
+or some other encoding.  @xref{Environment Variables}.
+
+In the @samp{C} or @samp{POSIX} locale, every character is encoded as
+a single byte and every byte is a valid character.  In more-complex
+encodings such as UTF-8, a sequence of multiple bytes may be needed to
+represent a character, and some bytes may be encoding errors that do
+not contribute to the representation of any character.  POSIX does not
+specify the behavior of @command{grep} when patterns or input data
+contain encoding errors or null characters, so portable scripts should
+avoid such usage.  As an extension to POSIX, GNU @command{grep} treats
+null characters like any other character.  However, unless the
+@option{-a} (@option{--binary-files=text}) option is used, the
+presence of null characters in input or of encoding errors in output
+causes GNU @command{grep} to treat the file as binary and suppress
+details about matches.  @xref{File and Directory Selection}.
+
+Regardless of locale, the 103 characters in the POSIX Portable
+Character Set (a subset of ASCII) are always encoded as a single byte,
+and the 128 ASCII characters have their usual single-byte encodings on
+all but oddball platforms.
+
+@node Matching Non-ASCII
+@section Matching Non-ASCII and Non-printable Characters
+@cindex non-ASCII matching
+@cindex non-printable matching
+
+In a regular expression, non-ASCII and non-printable characters other
+than newline are not special, and represent themselves.  For example,
+in a locale using UTF-8 the command @samp{grep 'Λ@tie{}ω'} (where the
+white space between @samp{Λ} and the @samp{ω} is a tab character)
+searches for @samp{Λ} (Unicode character U+039B GREEK CAPITAL LETTER
+LAMBDA), followed by a tab (U+0009 TAB), followed by @samp{ω} (U+03C9
+GREEK SMALL LETTER OMEGA).
+
+Suppose you want to limit your pattern to only printable characters
+(or even only printable ASCII characters) to keep your script readable
+or portable, but you also want to match specific non-ASCII or non-null
+non-printable characters.  If you are using the @option{-P}
+(@option{--perl-regexp}) option, PCREs give you several ways to do
+this.  Otherwise, if you are using Bash, the GNU project's shell, you
+can represent these characters via ANSI-C quoting.  For example, the
+Bash commands @samp{grep $'Λ\tω'} and @samp{grep $'\u039B\t\u03C9'}
+both search for the same three-character string @samp{Λ@tie{}ω}
+mentioned earlier.  However, because Bash translates ANSI-C quoting
+before @command{grep} sees the pattern, this technique should not be
+used to match printable ASCII characters; for example, @samp{grep
+$'\u005E'} is equivalent to @samp{grep '^'} and matches any line, not
+just lines containing the character @samp{^} (U+005E CIRCUMFLEX
+ACCENT).
+
+Since PCREs and ANSI-C quoting are GNU extensions to POSIX, portable
+shell scripts written in ASCII should use other methods to match
+specific non-ASCII characters.  For example, in a UTF-8 locale the
+command @samp{grep "$(printf '\316\233\t\317\211\n')"} is a portable
+albeit hard-to-read alternative to Bash's @samp{grep $'Λ\tω'}.
+However, none of these techniques will let you put a null character
+directly into a command-line pattern; null characters can appear only
+in a pattern specified via the @option{-f} (@option{--file}) option.
+
+@node Usage
+@chapter Usage
+
+@cindex usage, examples
+Here is an example command that invokes GNU @command{grep}:
+
+@example
+grep -i 'hello.*world' menu.h main.c
+@end example
+
+@noindent
+This lists all lines in the files @file{menu.h} and @file{main.c} that
+contain the string @samp{hello} followed by the string @samp{world};
+this is because @samp{.*} matches zero or more characters within a line.
+@xref{Regular Expressions}.
+The @option{-i} option causes @command{grep}
+to ignore case, causing it to match the line @samp{Hello, world!}, which
+it would not otherwise match.
+
+Here is a more complex example,
+showing the location and contents of any line
+containing @samp{f} and ending in @samp{.c},
+within all files in the current directory whose names
+start with non-@samp{.}, contain @samp{g}, and end in @samp{.h}.
+The @option{-n} option outputs line numbers, the @option{--} argument
+treats any later arguments as file names not options even if
+@code{*g*.h} expands to a file name that starts with @samp{-},
+and the empty file @file{/dev/null} causes file names to be output
+even if only one file name happens to be of the form @samp{*g*.h}.
+
+@example
+grep -n -- 'f.*\.c$' *g*.h /dev/null
+@end example
+
+@noindent
+Note that the regular expression syntax used in the pattern differs
+from the globbing syntax that the shell uses to match file names.
+
+@xref{Invoking}, for more details about
+how to invoke @command{grep}.
+
+@cindex using @command{grep}, Q&A
+@cindex FAQ about @command{grep} usage
+Here are some common questions and answers about @command{grep} usage.
+
+@enumerate
+
+@item
+How can I list just the names of matching files?
+
+@example
+grep -l 'main' test-*.c
+@end example
+
+@noindent
+lists names of @samp{test-*.c} files in the current directory whose contents
+mention @samp{main}.
+
+@item
+How do I search directories recursively?
+
+@example
+grep -r 'hello' /home/gigi
+@end example
+
+@noindent
+searches for @samp{hello} in all files
+under the @file{/home/gigi} directory.
+For more control over which files are searched,
+use @command{find} and @command{grep}.
+For example, the following command searches only C files:
+
+@example
+find /home/gigi -name '*.c' ! -type d \
+  -exec grep -H 'hello' '@{@}' +
+@end example
+
+This differs from the command:
+
+@example
+grep -H 'hello' /home/gigi/*.c
+@end example
+
+which merely looks for @samp{hello} in non-hidden C files in
+@file{/home/gigi} whose names end in @samp{.c}.
+The @command{find} command line above is more similar to the command:
+
+@example
+grep -r --include='*.c' 'hello' /home/gigi
+@end example
+
+@item
+What if a pattern or file has a leading @samp{-}?
+
+@example
+grep -- '--cut here--' *
+@end example
+
+@noindent
+searches for all lines matching @samp{--cut here--}.
+Without @option{--},
+@command{grep} would attempt to parse @samp{--cut here--} as a list of
+options, and there would be similar problems with any file names
+beginning with @samp{-}.
+
+Alternatively, you can prevent misinterpretation of leading @samp{-}
+by using @option{-e} for patterns and leading @samp{./} for files:
+
+@example
+grep -e '--cut here--' ./*
+@end example
+
+@item
+Suppose I want to search for a whole word, not a part of a word?
+
+@example
+grep -w 'hello' test*.log
+@end example
+
+@noindent
+searches only for instances of @samp{hello} that are entire words;
+it does not match @samp{Othello}.
+For more control, use @samp{\<} and
+@samp{\>} to match the start and end of words.
+For example:
+
+@example
+grep 'hello\>' test*.log
+@end example
+
+@noindent
+searches only for words ending in @samp{hello}, so it matches the word
+@samp{Othello}.
+
+@item
+How do I output context around the matching lines?
+
+@example
+grep -C 2 'hello' test*.log
+@end example
+
+@noindent
+prints two lines of context around each matching line.
+
+@item
+How do I force @command{grep} to print the name of the file?
+
+Append @file{/dev/null}:
+
+@example
+grep 'eli' /etc/passwd /dev/null
+@end example
+
+gets you:
+
+@example
+/etc/passwd:eli:x:2098:1000:Eli Smith:/home/eli:/bin/bash
+@end example
+
+Alternatively, use @option{-H}, which is a GNU extension:
+
+@example
+grep -H 'eli' /etc/passwd
+@end example
+
+@item
+Why do people use strange regular expressions on @command{ps} output?
+
+@example
+ps -ef | grep '[c]ron'
+@end example
+
+If the pattern had been written without the square brackets, it would
+have matched not only the @command{ps} output line for @command{cron},
+but also the @command{ps} output line for @command{grep}.
+Note that on some platforms,
+@command{ps} limits the output to the width of the screen;
+@command{grep} does not have any limit on the length of a line
+except the available memory.
+
+@item
+Why does @command{grep} report ``Binary file matches''?
+
+If @command{grep} listed all matching ``lines'' from a binary file, it
+would probably generate output that is not useful, and it might even
+muck up your display.
+So GNU @command{grep} suppresses output from
+files that appear to be binary files.
+To force GNU @command{grep}
+to output lines even from files that appear to be binary, use the
+@option{-a} or @samp{--binary-files=text} option.
+To eliminate the
+``Binary file matches'' messages, use the @option{-I} or
+@samp{--binary-files=without-match} option,
+or the @option{-s} or @option{--no-messages} option.
+
+@item
+Why doesn't @samp{grep -lv} print non-matching file names?
+
+@samp{grep -lv} lists the names of all files containing one or more
+lines that do not match.
+To list the names of all files that contain no
+matching lines, use the @option{-L} or @option{--files-without-match}
+option.
+
+@item
+I can do ``OR'' with @samp{|}, but what about ``AND''?
+
+@example
+grep 'paul' /etc/motd | grep 'franc,ois'
+@end example
+
+@noindent
+finds all lines that contain both @samp{paul} and @samp{franc,ois}.
+
+@item
+Why does the empty pattern match every input line?
+
+The @command{grep} command searches for lines that contain strings
+that match a pattern.  Every line contains the empty string, so an
+empty pattern causes @command{grep} to find a match on each line.  It
+is not the only such pattern: @samp{^}, @samp{$}, and many
+other patterns cause @command{grep} to match every line.
+
+To match empty lines, use the pattern @samp{^$}.  To match blank
+lines, use the pattern @samp{^[[:blank:]]*$}.  To match no lines at
+all, use the command @samp{grep -f /dev/null}.
+
+@item
+How can I search in both standard input and in files?
+
+Use the special file name @samp{-}:
+
+@example
+cat /etc/passwd | grep 'alain' - /etc/motd
+@end example
+
+@item
+Why is this back-reference failing?
+
+@example
+echo 'ba' | grep -E '(a)\1|b\1'
+@end example
+
+This outputs an error message, because the second @samp{\1}
+has nothing to refer back to, meaning it will never match anything.
+
+@item
+How can I match across lines?
+
+Standard grep cannot do this, as it is fundamentally line-based.
+Therefore, merely using the @code{[:space:]} character class does not
+match newlines in the way you might expect.
+
+With the GNU @command{grep} option @option{-z} (@option{--null-data}), each
+input and output ``line'' is null-terminated; @pxref{Other Options}.  Thus,
+you can match newlines in the input, but typically if there is a match
+the entire input is output, so this usage is often combined with
+output-suppressing options like @option{-q}, e.g.:
+
+@example
+printf 'foo\nbar\n' | grep -z -q 'foo[[:space:]]\+bar'
+@end example
+
+If this does not suffice, you can transform the input
+before giving it to @command{grep}, or turn to @command{awk},
+@command{sed}, @command{perl}, or many other utilities that are
+designed to operate across lines.
+
+@item
+What do @command{grep}, @command{fgrep}, and @command{egrep} stand for?
+
+The name @command{grep} comes from the way line editing was done on Unix.
+For example,
+@command{ed} uses the following syntax
+to print a list of matching lines on the screen:
+
+@example
+global/regular expression/print
+g/re/p
+@end example
+
+@command{fgrep} stands for Fixed @command{grep};
+@command{egrep} stands for Extended @command{grep}.
+
+@end enumerate
+
+
+@node Performance
+@chapter Performance
+
+@cindex performance
+Typically @command{grep} is an efficient way to search text.  However,
+it can be quite slow in some cases, and it can search large files
+where even minor performance tweaking can help significantly.
+Although the algorithm used by @command{grep} is an implementation
+detail that can change from release to release, understanding its
+basic strengths and weaknesses can help you improve its performance.
+
+The @command{grep} command operates partly via a set of automata that
+are designed for efficiency, and partly via a slower matcher that
+takes over when the fast matchers run into unusual features like
+back-references.  When feasible, the Boyer--Moore fast string
+searching algorithm is used to match a single fixed pattern, and the
+Aho--Corasick algorithm is used to match multiple fixed patterns.
+
+@cindex locales
+Generally speaking @command{grep} operates more efficiently in
+single-byte locales, since it can avoid the special processing needed
+for multi-byte characters.  If your patterns will work just as well
+that way, setting @env{LC_ALL} to a single-byte locale can help
+performance considerably.  Setting @samp{LC_ALL='C'} can be
+particularly efficient, as @command{grep} is tuned for that locale.
+
+@cindex case insensitive search
+Outside the @samp{C} locale, case-insensitive search, and search for
+bracket expressions like @samp{[a-z]} and @samp{[[=a=]b]}, can be
+surprisingly inefficient due to difficulties in fast portable access to
+concepts like multi-character collating elements.
+
+@cindex back-references
+A back-reference such as @samp{\1} can hurt performance significantly
+in some cases, since back-references cannot in general be implemented
+via a finite state automaton, and instead trigger a backtracking
+algorithm that can be quite inefficient.  For example, although the
+pattern @samp{^(.*)\1@{14@}(.*)\2@{13@}$} matches only lines whose
+lengths can be written as a sum @math{15x + 14y} for nonnegative
+integers @math{x} and @math{y}, the pattern matcher does not perform
+linear Diophantine analysis and instead backtracks through all
+possible matching strings, using an algorithm that is exponential in
+the worst case.
+
+@cindex holes in files
+On some operating systems that support files with holes---large
+regions of zeros that are not physically present on secondary
+storage---@command{grep} can skip over the holes efficiently without
+needing to read the zeros.  This optimization is not available if the
+@option{-a} (@option{--binary-files=text}) option is used (@pxref{File and
+Directory Selection}), unless the @option{-z} (@option{--null-data})
+option is also used (@pxref{Other Options}).
+
+For more about the algorithms used by @command{grep} and about
+related string matching algorithms, see:
+
+@frenchspacing on
+@itemize @bullet
+@item
+Aho AV. Algorithms for finding patterns in strings.
+In: van Leeuwen J. @emph{Handbook of Theoretical Computer Science}, vol. A.
+New York: Elsevier; 1990. p. 255--300.
+This surveys classic string matching algorithms, some of which are
+used by @command{grep}.
+
+@item
+Aho AV, Corasick MJ. Efficient string matching: an aid to bibliographic search.
+@emph{CACM}. 1975;18(6):333--40.
+@url{https://dx.doi.org/10.1145/360825.360855}.
+This introduces the Aho--Corasick algorithm.
+
+@item
+Boyer RS, Moore JS. A fast string searching algorithm.
+@emph{CACM}. 1977;20(10):762--72.
+@url{https://dx.doi.org/10.1145/359842.359859}.
+This introduces the Boyer--Moore algorithm.
+
+@item
+Faro S, Lecroq T. The exact online string matching problem: a review
+of the most recent results.
+@emph{ACM Comput Surv}. 2013;45(2):13.
+@url{https://dx.doi.org/10.1145/2431211.2431212}.
+This surveys string matching algorithms that might help improve the
+performance of @command{grep} in the future.
+@end itemize
+@frenchspacing off
+
+@node Reporting Bugs
+@chapter Reporting bugs
+
+@cindex bugs, reporting
+Bug reports can be found at the
+@url{https://debbugs.gnu.org/cgi/pkgreport.cgi?package=grep,
+GNU bug report logs for @command{grep}}.
+If you find a bug not listed there, please email it to
+@email{bug-grep@@gnu.org} to create a new bug report.
+
+@menu
+* Known Bugs::
+@end menu
+
+@node Known Bugs
+@section Known Bugs
+@cindex Bugs, known
+
+Large repetition counts in the @samp{@{n,m@}} construct may cause
+@command{grep} to use lots of memory.
+In addition, certain other
+obscure regular expressions require exponential time and
+space, and may cause @command{grep} to run out of memory.
+
+Back-references can greatly slow down matching, as they can generate
+exponentially many matching possibilities that can consume both time
+and memory to explore.  Also, the POSIX specification for
+back-references is at times unclear.  Furthermore, many regular
+expression implementations have back-reference bugs that can cause
+programs to return incorrect answers or even crash, and fixing these
+bugs has often been low-priority: for example, as of 2021 the
+@url{https://sourceware.org/bugzilla/,GNU C library bug database}
+contained back-reference bugs
+@url{https://sourceware.org/bugzilla/show_bug.cgi?id=52,,52},
+@url{https://sourceware.org/bugzilla/show_bug.cgi?id=10844,,10844},
+@url{https://sourceware.org/bugzilla/show_bug.cgi?id=11053,,11053},
+@url{https://sourceware.org/bugzilla/show_bug.cgi?id=24269,,24269}
+and @url{https://sourceware.org/bugzilla/show_bug.cgi?id=25322,,25322},
+with little sign of forthcoming fixes.  Luckily,
+back-references are rarely useful and it should be little trouble to
+avoid them in practical applications.
+
+
+@node Copying
+@chapter Copying
+@cindex copying
+
+GNU @command{grep} is licensed under the GNU GPL, which makes it @dfn{free
+software}.
+
+The ``free'' in ``free software'' refers to liberty, not price.  As
+some GNU project advocates like to point out, think of ``free speech''
+rather than ``free beer''.  In short, you have the right (freedom) to
+run and change @command{grep} and distribute it to other people, and---if you
+want---charge money for doing either.  The important restriction is
+that you have to grant your recipients the same rights and impose the
+same restrictions.
+
+This general method of licensing software is sometimes called
+@dfn{open source}.  The GNU project prefers the term ``free software''
+for reasons outlined at
+@url{https://www.gnu.org/philosophy/open-source-misses-the-point.html}.
+
+This manual is free documentation in the same sense.  The
+documentation license is included below.  The license for the program
+is available with the source code, or at
+@url{https://www.gnu.org/licenses/gpl.html}.
+
+@menu
+* GNU Free Documentation License::
+@end menu
+
+@node GNU Free Documentation License
+@section GNU Free Documentation License
+
+@include fdl.texi
+
+
+@node Index
+@unnumbered Index
+
+@printindex cp
+
+@bye
diff --git a/src/grep/doc/stamp-vti b/src/grep/doc/stamp-vti
new file mode 100644
index 0000000..0bb9e6b
--- /dev/null
+++ b/src/grep/doc/stamp-vti
@@ -0,0 +1,4 @@
+@set UPDATED 8 August 2021
+@set UPDATED-MONTH August 2021
+@set EDITION 3.7
+@set VERSION 3.7
diff --git a/src/grep/doc/version.texi b/src/grep/doc/version.texi
new file mode 100644
index 0000000..0bb9e6b
--- /dev/null
+++ b/src/grep/doc/version.texi
@@ -0,0 +1,4 @@
+@set UPDATED 8 August 2021
+@set UPDATED-MONTH August 2021
+@set EDITION 3.7
+@set VERSION 3.7
diff --git a/src/grep/gnulib-tests/Makefile.am b/src/grep/gnulib-tests/Makefile.am
new file mode 100644
index 0000000..3085f63
--- /dev/null
+++ b/src/grep/gnulib-tests/Makefile.am
@@ -0,0 +1,4 @@
+AM_CFLAGS =
+include gnulib.mk
+
+AM_CFLAGS += $(GNULIB_TEST_WARN_CFLAGS) $(WERROR_CFLAGS)
diff --git a/src/grep/gnulib-tests/Makefile.in b/src/grep/gnulib-tests/Makefile.in
new file mode 100644
index 0000000..2077847
--- /dev/null
+++ b/src/grep/gnulib-tests/Makefile.in
@@ -0,0 +1,7208 @@
+# Makefile.in generated by automake 1.16d from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Copyright (C) 2002-2021 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
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+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file.  If not, see <https://www.gnu.org/licenses/>.
+#
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+TESTS = test-accept$(EXEEXT) test-alignof$(EXEEXT) \
+	test-alloca-opt$(EXEEXT) test-argmatch$(EXEEXT) \
+	test-arpa_inet$(EXEEXT) test-binary-io.sh test-bind$(EXEEXT) \
+	test-bitrotate$(EXEEXT) test-btowc1.sh test-btowc2.sh \
+	test-c-ctype$(EXEEXT) test-c-stack.sh test-c-stack2.sh \
+	test-c-strcase.sh test-calloc-gnu$(EXEEXT) test-chdir$(EXEEXT) \
+	test-cloexec$(EXEEXT) test-close$(EXEEXT) \
+	test-connect$(EXEEXT) test-ctype$(EXEEXT) \
+	test-dfa-invalid-char-class.sh test-dfa-invalid-merge.sh \
+	test-dfa-match.sh test-dirent$(EXEEXT) test-dup$(EXEEXT) \
+	test-dup2$(EXEEXT) test-dynarray$(EXEEXT) \
+	test-environ$(EXEEXT) test-errno$(EXEEXT) test-exclude1.sh \
+	test-exclude2.sh test-exclude3.sh test-exclude4.sh \
+	test-exclude5.sh test-exclude6.sh test-exclude7.sh \
+	test-exclude8.sh test-fchdir$(EXEEXT) test-fcntl-h$(EXEEXT) \
+	test-fcntl-safer$(EXEEXT) test-fcntl$(EXEEXT) \
+	test-fdopen$(EXEEXT) test-fdopendir$(EXEEXT) \
+	test-fgetc$(EXEEXT) test-float$(EXEEXT) \
+	test-fnmatch-h$(EXEEXT) test-fnmatch$(EXEEXT) \
+	test-fopen-gnu$(EXEEXT) test-fopen$(EXEEXT) test-fpending.sh \
+	test-fputc$(EXEEXT) test-fread$(EXEEXT) test-free$(EXEEXT) \
+	test-fstat$(EXEEXT) test-fstatat$(EXEEXT) test-ftruncate.sh \
+	test-fwrite$(EXEEXT) test-getcwd-lgpl$(EXEEXT) \
+	test-getdtablesize$(EXEEXT) test-getopt-gnu$(EXEEXT) \
+	test-getopt-posix$(EXEEXT) test-getprogname$(EXEEXT) \
+	test-gettimeofday$(EXEEXT) test-hard-locale$(EXEEXT) \
+	test-hash$(EXEEXT) test-i-ring$(EXEEXT) test-iconv-h$(EXEEXT) \
+	test-iconv$(EXEEXT) test-ignore-value$(EXEEXT) \
+	test-inet_pton$(EXEEXT) test-intprops$(EXEEXT) \
+	test-inttostr$(EXEEXT) test-inttypes$(EXEEXT) \
+	test-ioctl$(EXEEXT) test-isatty$(EXEEXT) test-isblank$(EXEEXT) \
+	test-iswblank$(EXEEXT) test-iswdigit.sh test-iswxdigit.sh \
+	test-langinfo$(EXEEXT) test-limits-h$(EXEEXT) \
+	test-listen$(EXEEXT) test-locale$(EXEEXT) \
+	test-localeconv$(EXEEXT) test-localename$(EXEEXT) \
+	test-lseek.sh test-lstat$(EXEEXT) test-malloc-gnu$(EXEEXT) \
+	test-malloca$(EXEEXT) test-mbscasecmp.sh test-mbsinit.sh \
+	test-mbsrtowcs1.sh test-mbsrtowcs2.sh test-mbsrtowcs3.sh \
+	test-mbsrtowcs4.sh test-mbsstr1$(EXEEXT) test-mbsstr2.sh \
+	test-mbsstr3.sh test-memchr$(EXEEXT) test-memchr2$(EXEEXT) \
+	test-memrchr$(EXEEXT) test-nanosleep$(EXEEXT) \
+	test-netinet_in$(EXEEXT) test-nl_langinfo.sh \
+	test-nl_langinfo-mt$(EXEEXT) test-open$(EXEEXT) \
+	test-openat-safer$(EXEEXT) test-openat$(EXEEXT) \
+	test-pathmax$(EXEEXT) test-perror.sh test-perror2$(EXEEXT) \
+	test-pipe$(EXEEXT) test-pthread$(EXEEXT) \
+	test-pthread-thread$(EXEEXT) test-pthread_sigmask1$(EXEEXT) \
+	test-pthread_sigmask2$(EXEEXT) test-quotearg-simple$(EXEEXT) \
+	test-raise$(EXEEXT) test-rawmemchr$(EXEEXT) test-read$(EXEEXT) \
+	test-realloc-gnu$(EXEEXT) test-reallocarray$(EXEEXT) \
+	test-regex$(EXEEXT) test-sched$(EXEEXT) test-select$(EXEEXT) \
+	test-select-in.sh test-select-out.sh test-setenv$(EXEEXT) \
+	test-setlocale_null$(EXEEXT) \
+	test-setlocale_null-mt-one$(EXEEXT) \
+	test-setlocale_null-mt-all$(EXEEXT) test-setlocale1.sh \
+	test-setlocale2.sh test-setsockopt$(EXEEXT) \
+	test-sigaction$(EXEEXT) test-signal-h$(EXEEXT) \
+	test-sigprocmask$(EXEEXT) test-sigsegv-catch-segv1$(EXEEXT) \
+	test-sigsegv-catch-segv2$(EXEEXT) \
+	test-sigsegv-catch-stackoverflow1$(EXEEXT) \
+	test-sigsegv-catch-stackoverflow2$(EXEEXT) test-sleep$(EXEEXT) \
+	test-snprintf$(EXEEXT) test-sockets$(EXEEXT) \
+	test-stat$(EXEEXT) test-stat-time$(EXEEXT) \
+	test-stdalign$(EXEEXT) test-stdbool$(EXEEXT) \
+	test-stddef$(EXEEXT) test-stdint$(EXEEXT) test-stdio$(EXEEXT) \
+	test-stdlib$(EXEEXT) test-strerror$(EXEEXT) \
+	test-strerror_r$(EXEEXT) test-striconv$(EXEEXT) \
+	test-string$(EXEEXT) test-strnlen$(EXEEXT) \
+	test-strstr$(EXEEXT) test-strtoimax$(EXEEXT) \
+	test-strtoll$(EXEEXT) test-strtoull$(EXEEXT) \
+	test-strtoumax$(EXEEXT) test-symlink$(EXEEXT) \
+	test-sys_ioctl$(EXEEXT) test-sys_select$(EXEEXT) \
+	test-sys_socket$(EXEEXT) test-sys_stat$(EXEEXT) \
+	test-sys_time$(EXEEXT) test-sys_types$(EXEEXT) \
+	test-sys_uio$(EXEEXT) test-init.sh test-thread_self$(EXEEXT) \
+	test-thread_create$(EXEEXT) test-time$(EXEEXT) \
+	test-dup-safer$(EXEEXT) test-unistd$(EXEEXT) \
+	test-u8-mbtoucr$(EXEEXT) test-u8-uctomb$(EXEEXT) \
+	test-uc_width$(EXEEXT) uniwidth/test-uc_width2.sh \
+	test-unsetenv$(EXEEXT) test-vasnprintf$(EXEEXT) \
+	test-vc-list-files-git.sh test-vc-list-files-cvs.sh \
+	test-verify$(EXEEXT) test-verify.sh test-version-etc.sh \
+	test-wchar$(EXEEXT) test-wcrtomb.sh test-wcrtomb-w32-1.sh \
+	test-wcrtomb-w32-2.sh test-wcrtomb-w32-3.sh \
+	test-wcrtomb-w32-4.sh test-wcrtomb-w32-5.sh \
+	test-wcrtomb-w32-6.sh test-wcrtomb-w32-7.sh \
+	test-wctype-h$(EXEEXT) test-wcwidth$(EXEEXT) \
+	test-xalloc-die.sh test-xstrtoimax.sh test-xstrtol.sh
+XFAIL_TESTS =
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+	test-arpa_inet$(EXEEXT) test-binary-io$(EXEEXT) \
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+	test-calloc-gnu$(EXEEXT) test-chdir$(EXEEXT) \
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+	test-dfa-match-aux$(EXEEXT) test-dirent$(EXEEXT) \
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+	test-fdopendir$(EXEEXT) test-fgetc$(EXEEXT) \
+	test-float$(EXEEXT) test-fnmatch-h$(EXEEXT) \
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+	test-fstatat$(EXEEXT) test-ftruncate$(EXEEXT) \
+	test-fwrite$(EXEEXT) test-getcwd-lgpl$(EXEEXT) \
+	test-getdtablesize$(EXEEXT) test-getopt-gnu$(EXEEXT) \
+	test-getopt-posix$(EXEEXT) test-getprogname$(EXEEXT) \
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+	test-mbsinit$(EXEEXT) test-mbsrtowcs$(EXEEXT) \
+	test-mbsstr1$(EXEEXT) test-mbsstr2$(EXEEXT) \
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+	test-memchr2$(EXEEXT) test-memrchr$(EXEEXT) \
+	test-nanosleep$(EXEEXT) test-netinet_in$(EXEEXT) \
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+	test-uc_width$(EXEEXT) test-uc_width2$(EXEEXT) \
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+	test-verify$(EXEEXT) test-version-etc$(EXEEXT) \
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+	test-cloexec.c test-close.c test-connect.c test-ctype.c \
+	test-dfa-match-aux.c test-dirent.c test-dup.c test-dup-safer.c \
+	test-dup2.c test-dynarray.c test-environ.c test-errno.c \
+	test-exclude.c test-fchdir.c test-fcntl.c test-fcntl-h.c \
+	test-fcntl-safer.c test-fdopen.c test-fdopendir.c test-fgetc.c \
+	test-float.c test-fnmatch.c test-fnmatch-h.c test-fopen.c \
+	test-fopen-gnu.c test-fpending.c test-fputc.c test-fread.c \
+	test-free.c test-fstat.c test-fstatat.c test-ftruncate.c \
+	test-fwrite.c test-getcwd-lgpl.c test-getdtablesize.c \
+	test-getopt-gnu.c test-getopt-posix.c test-getprogname.c \
+	test-gettimeofday.c test-hard-locale.c test-hash.c \
+	test-i-ring.c test-iconv.c test-iconv-h.c test-ignore-value.c \
+	test-inet_pton.c test-intprops.c test-inttostr.c \
+	test-inttypes.c test-ioctl.c test-isatty.c test-isblank.c \
+	test-iswblank.c test-iswdigit.c test-iswxdigit.c \
+	test-langinfo.c test-limits-h.c test-listen.c \
+	test-localcharset.c test-locale.c test-localeconv.c \
+	test-localename.c test-lseek.c test-lstat.c test-malloc-gnu.c \
+	test-malloca.c test-mbscasecmp.c test-mbsinit.c \
+	test-mbsrtowcs.c test-mbsstr1.c test-mbsstr2.c test-mbsstr3.c \
+	test-memchr.c test-memchr2.c test-memrchr.c test-nanosleep.c \
+	test-netinet_in.c test-nl_langinfo.c test-nl_langinfo-mt.c \
+	test-open.c test-openat.c test-openat-safer.c test-pathmax.c \
+	test-perror.c test-perror2.c test-pipe.c test-pthread.c \
+	test-pthread-thread.c test-pthread_sigmask1.c \
+	test-pthread_sigmask2.c test-quotearg-simple.c test-raise.c \
+	test-rawmemchr.c test-read.c test-realloc-gnu.c \
+	test-reallocarray.c test-regex.c test-sched.c test-select.c \
+	test-select-fd.c test-select-stdin.c test-setenv.c \
+	test-setlocale1.c test-setlocale2.c test-setlocale_null.c \
+	test-setlocale_null-mt-all.c test-setlocale_null-mt-one.c \
+	test-setsockopt.c test-sigaction.c test-signal-h.c \
+	test-sigprocmask.c test-sigsegv-catch-segv1.c \
+	test-sigsegv-catch-segv2.c test-sigsegv-catch-stackoverflow1.c \
+	test-sigsegv-catch-stackoverflow2.c test-sleep.c \
+	test-snprintf.c test-sockets.c test-stat.c test-stat-time.c \
+	test-stdalign.c test-stdbool.c test-stddef.c test-stdint.c \
+	test-stdio.c test-stdlib.c test-strerror.c test-strerror_r.c \
+	test-striconv.c test-string.c test-strnlen.c test-strstr.c \
+	test-strtoimax.c test-strtoll.c test-strtoull.c \
+	test-strtoumax.c test-symlink.c test-sys_ioctl.c \
+	test-sys_select.c test-sys_socket.c test-sys_stat.c \
+	test-sys_time.c test-sys_types.c test-sys_uio.c \
+	test-thread_create.c test-thread_self.c test-time.c \
+	$(test_u8_mbtoucr_SOURCES) $(test_u8_uctomb_SOURCES) \
+	$(test_uc_width_SOURCES) $(test_uc_width2_SOURCES) \
+	test-unistd.c test-unsetenv.c test-vasnprintf.c test-verify.c \
+	test-verify-try.c test-version-etc.c test-wchar.c \
+	test-wcrtomb.c test-wcrtomb-w32.c test-wctype-h.c \
+	test-wcwidth.c test-xalloc-die.c test-xstrtoimax.c \
+	test-xstrtol.c test-xstrtoul.c
+RECURSIVE_TARGETS = all-recursive check-recursive cscopelist-recursive \
+	ctags-recursive dvi-recursive html-recursive info-recursive \
+	install-data-recursive install-dvi-recursive \
+	install-exec-recursive install-html-recursive \
+	install-info-recursive install-pdf-recursive \
+	install-ps-recursive install-recursive installcheck-recursive \
+	installdirs-recursive pdf-recursive ps-recursive \
+	tags-recursive uninstall-recursive
+am__can_run_installinfo = \
+  case $$AM_UPDATE_INFO_DIR in \
+    n|no|NO) false;; \
+    *) (install-info --version) >/dev/null 2>&1;; \
+  esac
+HEADERS = $(noinst_HEADERS)
+RECURSIVE_CLEAN_TARGETS = mostlyclean-recursive clean-recursive	\
+  distclean-recursive maintainer-clean-recursive
+am__recursive_targets = \
+  $(RECURSIVE_TARGETS) \
+  $(RECURSIVE_CLEAN_TARGETS) \
+  $(am__extra_recursive_targets)
+AM_RECURSIVE_TARGETS = $(am__recursive_targets:-recursive=) TAGS CTAGS \
+	check recheck distdir distdir-am
+am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
+# Read a list of newline-separated strings from the standard input,
+# and print each of them once, without duplicates.  Input order is
+# *not* preserved.
+am__uniquify_input = $(AWK) '\
+  BEGIN { nonempty = 0; } \
+  { items[$$0] = 1; nonempty = 1; } \
+  END { if (nonempty) { for (i in items) print i; }; } \
+'
+# Make sure the list of sources is unique.  This is necessary because,
+# e.g., the same source file might be shared among _SOURCES variables
+# for different programs/libraries.
+am__define_uniq_tagged_files = \
+  list='$(am__tagged_files)'; \
+  unique=`for i in $$list; do \
+    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+  done | $(am__uniquify_input)`
+am__tty_colors_dummy = \
+  mgn= red= grn= lgn= blu= brg= std=; \
+  am__color_tests=no
+am__tty_colors = { \
+  $(am__tty_colors_dummy); \
+  if test "X$(AM_COLOR_TESTS)" = Xno; then \
+    am__color_tests=no; \
+  elif test "X$(AM_COLOR_TESTS)" = Xalways; then \
+    am__color_tests=yes; \
+  elif test "X$$TERM" != Xdumb && { test -t 1; } 2>/dev/null; then \
+    am__color_tests=yes; \
+  fi; \
+  if test $$am__color_tests = yes; then \
+    red=''; \
+    grn=''; \
+    lgn=''; \
+    blu=''; \
+    mgn=''; \
+    brg=''; \
+    std=''; \
+  fi; \
+}
+am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
+am__vpath_adj = case $$p in \
+    $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
+    *) f=$$p;; \
+  esac;
+am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`;
+am__install_max = 40
+am__nobase_strip_setup = \
+  srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'`
+am__nobase_strip = \
+  for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||"
+am__nobase_list = $(am__nobase_strip_setup); \
+  for p in $$list; do echo "$$p $$p"; done | \
+  sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \
+  $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \
+    if (++n[$$2] == $(am__install_max)) \
+      { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \
+    END { for (dir in files) print dir, files[dir] }'
+am__base_list = \
+  sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \
+  sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g'
+am__uninstall_files_from_dir = { \
+  test -z "$$files" \
+    || { test ! -d "$$dir" && test ! -f "$$dir" && test ! -r "$$dir"; } \
+    || { echo " ( cd '$$dir' && rm -f" $$files ")"; \
+         $(am__cd) "$$dir" && rm -f $$files; }; \
+  }
+am__recheck_rx = ^[ 	]*:recheck:[ 	]*
+am__global_test_result_rx = ^[ 	]*:global-test-result:[ 	]*
+am__copy_in_global_log_rx = ^[ 	]*:copy-in-global-log:[ 	]*
+# A command that, given a newline-separated list of test names on the
+# standard input, print the name of the tests that are to be re-run
+# upon "make recheck".
+am__list_recheck_tests = $(AWK) '{ \
+  recheck = 1; \
+  while ((rc = (getline line < ($$0 ".trs"))) != 0) \
+    { \
+      if (rc < 0) \
+        { \
+          if ((getline line2 < ($$0 ".log")) < 0) \
+	    recheck = 0; \
+          break; \
+        } \
+      else if (line ~ /$(am__recheck_rx)[nN][Oo]/) \
+        { \
+          recheck = 0; \
+          break; \
+        } \
+      else if (line ~ /$(am__recheck_rx)[yY][eE][sS]/) \
+        { \
+          break; \
+        } \
+    }; \
+  if (recheck) \
+    print $$0; \
+  close ($$0 ".trs"); \
+  close ($$0 ".log"); \
+}'
+# A command that, given a newline-separated list of test names on the
+# standard input, create the global log from their .trs and .log files.
+am__create_global_log = $(AWK) ' \
+function fatal(msg) \
+{ \
+  print "fatal: making $@: " msg | "cat >&2"; \
+  exit 1; \
+} \
+function rst_section(header) \
+{ \
+  print header; \
+  len = length(header); \
+  for (i = 1; i <= len; i = i + 1) \
+    printf "="; \
+  printf "\n\n"; \
+} \
+{ \
+  copy_in_global_log = 1; \
+  global_test_result = "RUN"; \
+  while ((rc = (getline line < ($$0 ".trs"))) != 0) \
+    { \
+      if (rc < 0) \
+         fatal("failed to read from " $$0 ".trs"); \
+      if (line ~ /$(am__global_test_result_rx)/) \
+        { \
+          sub("$(am__global_test_result_rx)", "", line); \
+          sub("[ 	]*$$", "", line); \
+          global_test_result = line; \
+        } \
+      else if (line ~ /$(am__copy_in_global_log_rx)[nN][oO]/) \
+        copy_in_global_log = 0; \
+    }; \
+  if (copy_in_global_log) \
+    { \
+      rst_section(global_test_result ": " $$0); \
+      while ((rc = (getline line < ($$0 ".log"))) != 0) \
+      { \
+        if (rc < 0) \
+          fatal("failed to read from " $$0 ".log"); \
+        print line; \
+      }; \
+      printf "\n"; \
+    }; \
+  close ($$0 ".trs"); \
+  close ($$0 ".log"); \
+}'
+# Restructured Text title.
+am__rst_title = { sed 's/.*/   &   /;h;s/./=/g;p;x;s/ *$$//;p;g' && echo; }
+# Solaris 10 'make', and several other traditional 'make' implementations,
+# pass "-e" to $(SHELL), and POSIX 2008 even requires this.  Work around it
+# by disabling -e (using the XSI extension "set +e") if it's set.
+am__sh_e_setup = case $$- in *e*) set +e;; esac
+# Default flags passed to test drivers.
+am__common_driver_flags = \
+  --color-tests "$$am__color_tests" \
+  --enable-hard-errors "$$am__enable_hard_errors" \
+  --expect-failure "$$am__expect_failure"
+# To be inserted before the command running the test.  Creates the
+# directory for the log if needed.  Stores in $dir the directory
+# containing $f, in $tst the test, in $log the log.  Executes the
+# developer- defined test setup AM_TESTS_ENVIRONMENT (if any), and
+# passes TESTS_ENVIRONMENT.  Set up options for the wrapper that
+# will run the test scripts (or their associated LOG_COMPILER, if
+# thy have one).
+am__check_pre = \
+$(am__sh_e_setup);					\
+$(am__vpath_adj_setup) $(am__vpath_adj)			\
+$(am__tty_colors);					\
+srcdir=$(srcdir); export srcdir;			\
+case "$@" in						\
+  */*) am__odir=`echo "./$@" | sed 's|/[^/]*$$||'`;;	\
+    *) am__odir=.;; 					\
+esac;							\
+test "x$$am__odir" = x"." || test -d "$$am__odir" 	\
+  || $(MKDIR_P) "$$am__odir" || exit $$?;		\
+if test -f "./$$f"; then dir=./;			\
+elif test -f "$$f"; then dir=;				\
+else dir="$(srcdir)/"; fi;				\
+tst=$$dir$$f; log='$@'; 				\
+if test -n '$(DISABLE_HARD_ERRORS)'; then		\
+  am__enable_hard_errors=no; 				\
+else							\
+  am__enable_hard_errors=yes; 				\
+fi; 							\
+case " $(XFAIL_TESTS) " in				\
+  *[\ \	]$$f[\ \	]* | *[\ \	]$$dir$$f[\ \	]*) \
+    am__expect_failure=yes;;				\
+  *)							\
+    am__expect_failure=no;;				\
+esac; 							\
+$(AM_TESTS_ENVIRONMENT) $(TESTS_ENVIRONMENT)
+# A shell command to get the names of the tests scripts with any registered
+# extension removed (i.e., equivalently, the names of the test logs, with
+# the '.log' extension removed).  The result is saved in the shell variable
+# '$bases'.  This honors runtime overriding of TESTS and TEST_LOGS.  Sadly,
+# we cannot use something simpler, involving e.g., "$(TEST_LOGS:.log=)",
+# since that might cause problem with VPATH rewrites for suffix-less tests.
+# See also 'test-harness-vpath-rewrite.sh' and 'test-trs-basic.sh'.
+am__set_TESTS_bases = \
+  bases='$(TEST_LOGS)'; \
+  bases=`for i in $$bases; do echo $$i; done | sed 's/\.log$$//'`; \
+  bases=`echo $$bases`
+AM_TESTSUITE_SUMMARY_HEADER = ' for $(PACKAGE_STRING)'
+RECHECK_LOGS = $(TEST_LOGS)
+TEST_SUITE_LOG = test-suite.log
+TEST_EXTENSIONS = @EXEEXT@ .test
+LOG_DRIVER = $(SHELL) $(top_srcdir)/build-aux/test-driver
+LOG_COMPILE = $(LOG_COMPILER) $(AM_LOG_FLAGS) $(LOG_FLAGS)
+am__set_b = \
+  case '$@' in \
+    */*) \
+      case '$*' in \
+        */*) b='$*';; \
+          *) b=`echo '$@' | sed 's/\.log$$//'`; \
+       esac;; \
+    *) \
+      b='$*';; \
+  esac
+am__test_logs1 = $(TESTS:=.log)
+am__test_logs2 = $(am__test_logs1:@EXEEXT@.log=.log)
+TEST_LOGS = $(am__test_logs2:.test.log=.log)
+TEST_LOG_DRIVER = $(SHELL) $(top_srcdir)/build-aux/test-driver
+TEST_LOG_COMPILE = $(TEST_LOG_COMPILER) $(AM_TEST_LOG_FLAGS) \
+	$(TEST_LOG_FLAGS)
+DIST_SUBDIRS = $(SUBDIRS)
+am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/gnulib.mk \
+	$(top_srcdir)/build-aux/depcomp \
+	$(top_srcdir)/build-aux/test-driver
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+am__relativize = \
+  dir0=`pwd`; \
+  sed_first='s,^\([^/]*\)/.*$$,\1,'; \
+  sed_rest='s,^[^/]*/*,,'; \
+  sed_last='s,^.*/\([^/]*\)$$,\1,'; \
+  sed_butlast='s,/*[^/]*$$,,'; \
+  while test -n "$$dir1"; do \
+    first=`echo "$$dir1" | sed -e "$$sed_first"`; \
+    if test "$$first" != "."; then \
+      if test "$$first" = ".."; then \
+        dir2=`echo "$$dir0" | sed -e "$$sed_last"`/"$$dir2"; \
+        dir0=`echo "$$dir0" | sed -e "$$sed_butlast"`; \
+      else \
+        first2=`echo "$$dir2" | sed -e "$$sed_first"`; \
+        if test "$$first2" = "$$first"; then \
+          dir2=`echo "$$dir2" | sed -e "$$sed_rest"`; \
+        else \
+          dir2="../$$dir2"; \
+        fi; \
+        dir0="$$dir0"/"$$first"; \
+      fi; \
+    fi; \
+    dir1=`echo "$$dir1" | sed -e "$$sed_rest"`; \
+  done; \
+  reldir="$$dir2"
+pkglibexecdir = @pkglibexecdir@
+ACLOCAL = @ACLOCAL@
+ALLOCA = @ALLOCA@
+ALLOCA_H = @ALLOCA_H@
+AMTAR = @AMTAR@
+AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+APPLE_UNIVERSAL_BUILD = @APPLE_UNIVERSAL_BUILD@
+AR = @AR@
+ARFLAGS = @ARFLAGS@
+AUTOCONF = @AUTOCONF@
+AUTOHEADER = @AUTOHEADER@
+AUTOMAKE = @AUTOMAKE@
+AWK = @AWK@
+BITSIZEOF_PTRDIFF_T = @BITSIZEOF_PTRDIFF_T@
+BITSIZEOF_SIG_ATOMIC_T = @BITSIZEOF_SIG_ATOMIC_T@
+BITSIZEOF_SIZE_T = @BITSIZEOF_SIZE_T@
+BITSIZEOF_WCHAR_T = @BITSIZEOF_WCHAR_T@
+BITSIZEOF_WINT_T = @BITSIZEOF_WINT_T@
+CC = @CC@
+CCDEPMODE = @CCDEPMODE@
+CFLAGS = @GL_CFLAG_ALLOW_WARNINGS@ @CFLAGS@
+CFLAG_VISIBILITY = @CFLAG_VISIBILITY@
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+CONFIG_INCLUDE = @CONFIG_INCLUDE@
+CPP = @CPP@
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+GETTEXT_MACRO_VERSION = @GETTEXT_MACRO_VERSION@
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+GL_GNULIB_ALPHASORT = @GL_GNULIB_ALPHASORT@
+GL_GNULIB_ATOLL = @GL_GNULIB_ATOLL@
+GL_GNULIB_BIND = @GL_GNULIB_BIND@
+GL_GNULIB_BTOWC = @GL_GNULIB_BTOWC@
+GL_GNULIB_CALLOC_POSIX = @GL_GNULIB_CALLOC_POSIX@
+GL_GNULIB_CANONICALIZE_FILE_NAME = @GL_GNULIB_CANONICALIZE_FILE_NAME@
+GL_GNULIB_CHDIR = @GL_GNULIB_CHDIR@
+GL_GNULIB_CHOWN = @GL_GNULIB_CHOWN@
+GL_GNULIB_CLOSE = @GL_GNULIB_CLOSE@
+GL_GNULIB_CLOSEDIR = @GL_GNULIB_CLOSEDIR@
+GL_GNULIB_CONNECT = @GL_GNULIB_CONNECT@
+GL_GNULIB_COPY_FILE_RANGE = @GL_GNULIB_COPY_FILE_RANGE@
+GL_GNULIB_CREAT = @GL_GNULIB_CREAT@
+GL_GNULIB_CTIME = @GL_GNULIB_CTIME@
+GL_GNULIB_DIRFD = @GL_GNULIB_DIRFD@
+GL_GNULIB_DPRINTF = @GL_GNULIB_DPRINTF@
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+GL_GNULIB_ENVIRON = @GL_GNULIB_ENVIRON@
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+GL_GNULIB_EXECL = @GL_GNULIB_EXECL@
+GL_GNULIB_EXECLE = @GL_GNULIB_EXECLE@
+GL_GNULIB_EXECLP = @GL_GNULIB_EXECLP@
+GL_GNULIB_EXECV = @GL_GNULIB_EXECV@
+GL_GNULIB_EXECVE = @GL_GNULIB_EXECVE@
+GL_GNULIB_EXECVP = @GL_GNULIB_EXECVP@
+GL_GNULIB_EXECVPE = @GL_GNULIB_EXECVPE@
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+GL_GNULIB_FACCESSAT = @GL_GNULIB_FACCESSAT@
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+GL_GNULIB_FCHMODAT = @GL_GNULIB_FCHMODAT@
+GL_GNULIB_FCHOWNAT = @GL_GNULIB_FCHOWNAT@
+GL_GNULIB_FCLOSE = @GL_GNULIB_FCLOSE@
+GL_GNULIB_FCNTL = @GL_GNULIB_FCNTL@
+GL_GNULIB_FDATASYNC = @GL_GNULIB_FDATASYNC@
+GL_GNULIB_FDOPEN = @GL_GNULIB_FDOPEN@
+GL_GNULIB_FDOPENDIR = @GL_GNULIB_FDOPENDIR@
+GL_GNULIB_FFLUSH = @GL_GNULIB_FFLUSH@
+GL_GNULIB_FFSL = @GL_GNULIB_FFSL@
+GL_GNULIB_FFSLL = @GL_GNULIB_FFSLL@
+GL_GNULIB_FGETC = @GL_GNULIB_FGETC@
+GL_GNULIB_FGETS = @GL_GNULIB_FGETS@
+GL_GNULIB_FNMATCH = @GL_GNULIB_FNMATCH@
+GL_GNULIB_FOPEN = @GL_GNULIB_FOPEN@
+GL_GNULIB_FPRINTF = @GL_GNULIB_FPRINTF@
+GL_GNULIB_FPRINTF_POSIX = @GL_GNULIB_FPRINTF_POSIX@
+GL_GNULIB_FPURGE = @GL_GNULIB_FPURGE@
+GL_GNULIB_FPUTC = @GL_GNULIB_FPUTC@
+GL_GNULIB_FPUTS = @GL_GNULIB_FPUTS@
+GL_GNULIB_FREAD = @GL_GNULIB_FREAD@
+GL_GNULIB_FREE_POSIX = @GL_GNULIB_FREE_POSIX@
+GL_GNULIB_FREOPEN = @GL_GNULIB_FREOPEN@
+GL_GNULIB_FSCANF = @GL_GNULIB_FSCANF@
+GL_GNULIB_FSEEK = @GL_GNULIB_FSEEK@
+GL_GNULIB_FSEEKO = @GL_GNULIB_FSEEKO@
+GL_GNULIB_FSTAT = @GL_GNULIB_FSTAT@
+GL_GNULIB_FSTATAT = @GL_GNULIB_FSTATAT@
+GL_GNULIB_FSYNC = @GL_GNULIB_FSYNC@
+GL_GNULIB_FTELL = @GL_GNULIB_FTELL@
+GL_GNULIB_FTELLO = @GL_GNULIB_FTELLO@
+GL_GNULIB_FTRUNCATE = @GL_GNULIB_FTRUNCATE@
+GL_GNULIB_FUTIMENS = @GL_GNULIB_FUTIMENS@
+GL_GNULIB_FWRITE = @GL_GNULIB_FWRITE@
+GL_GNULIB_GETC = @GL_GNULIB_GETC@
+GL_GNULIB_GETCHAR = @GL_GNULIB_GETCHAR@
+GL_GNULIB_GETCWD = @GL_GNULIB_GETCWD@
+GL_GNULIB_GETDELIM = @GL_GNULIB_GETDELIM@
+GL_GNULIB_GETDOMAINNAME = @GL_GNULIB_GETDOMAINNAME@
+GL_GNULIB_GETDTABLESIZE = @GL_GNULIB_GETDTABLESIZE@
+GL_GNULIB_GETENTROPY = @GL_GNULIB_GETENTROPY@
+GL_GNULIB_GETGROUPS = @GL_GNULIB_GETGROUPS@
+GL_GNULIB_GETHOSTNAME = @GL_GNULIB_GETHOSTNAME@
+GL_GNULIB_GETLINE = @GL_GNULIB_GETLINE@
+GL_GNULIB_GETLOADAVG = @GL_GNULIB_GETLOADAVG@
+GL_GNULIB_GETLOGIN = @GL_GNULIB_GETLOGIN@
+GL_GNULIB_GETLOGIN_R = @GL_GNULIB_GETLOGIN_R@
+GL_GNULIB_GETOPT_POSIX = @GL_GNULIB_GETOPT_POSIX@
+GL_GNULIB_GETPAGESIZE = @GL_GNULIB_GETPAGESIZE@
+GL_GNULIB_GETPASS = @GL_GNULIB_GETPASS@
+GL_GNULIB_GETPEERNAME = @GL_GNULIB_GETPEERNAME@
+GL_GNULIB_GETSOCKNAME = @GL_GNULIB_GETSOCKNAME@
+GL_GNULIB_GETSOCKOPT = @GL_GNULIB_GETSOCKOPT@
+GL_GNULIB_GETSUBOPT = @GL_GNULIB_GETSUBOPT@
+GL_GNULIB_GETTIMEOFDAY = @GL_GNULIB_GETTIMEOFDAY@
+GL_GNULIB_GETUMASK = @GL_GNULIB_GETUMASK@
+GL_GNULIB_GETUSERSHELL = @GL_GNULIB_GETUSERSHELL@
+GL_GNULIB_GRANTPT = @GL_GNULIB_GRANTPT@
+GL_GNULIB_GROUP_MEMBER = @GL_GNULIB_GROUP_MEMBER@
+GL_GNULIB_ICONV = @GL_GNULIB_ICONV@
+GL_GNULIB_IMAXABS = @GL_GNULIB_IMAXABS@
+GL_GNULIB_IMAXDIV = @GL_GNULIB_IMAXDIV@
+GL_GNULIB_INET_NTOP = @GL_GNULIB_INET_NTOP@
+GL_GNULIB_INET_PTON = @GL_GNULIB_INET_PTON@
+GL_GNULIB_IOCTL = @GL_GNULIB_IOCTL@
+GL_GNULIB_ISATTY = @GL_GNULIB_ISATTY@
+GL_GNULIB_ISBLANK = @GL_GNULIB_ISBLANK@
+GL_GNULIB_ISWBLANK = @GL_GNULIB_ISWBLANK@
+GL_GNULIB_ISWCTYPE = @GL_GNULIB_ISWCTYPE@
+GL_GNULIB_ISWDIGIT = @GL_GNULIB_ISWDIGIT@
+GL_GNULIB_ISWXDIGIT = @GL_GNULIB_ISWXDIGIT@
+GL_GNULIB_LCHMOD = @GL_GNULIB_LCHMOD@
+GL_GNULIB_LCHOWN = @GL_GNULIB_LCHOWN@
+GL_GNULIB_LINK = @GL_GNULIB_LINK@
+GL_GNULIB_LINKAT = @GL_GNULIB_LINKAT@
+GL_GNULIB_LISTEN = @GL_GNULIB_LISTEN@
+GL_GNULIB_LOCALECONV = @GL_GNULIB_LOCALECONV@
+GL_GNULIB_LOCALENAME = @GL_GNULIB_LOCALENAME@
+GL_GNULIB_LOCALTIME = @GL_GNULIB_LOCALTIME@
+GL_GNULIB_LSEEK = @GL_GNULIB_LSEEK@
+GL_GNULIB_LSTAT = @GL_GNULIB_LSTAT@
+GL_GNULIB_MALLOC_POSIX = @GL_GNULIB_MALLOC_POSIX@
+GL_GNULIB_MBRLEN = @GL_GNULIB_MBRLEN@
+GL_GNULIB_MBRTOWC = @GL_GNULIB_MBRTOWC@
+GL_GNULIB_MBSCASECMP = @GL_GNULIB_MBSCASECMP@
+GL_GNULIB_MBSCASESTR = @GL_GNULIB_MBSCASESTR@
+GL_GNULIB_MBSCHR = @GL_GNULIB_MBSCHR@
+GL_GNULIB_MBSCSPN = @GL_GNULIB_MBSCSPN@
+GL_GNULIB_MBSINIT = @GL_GNULIB_MBSINIT@
+GL_GNULIB_MBSLEN = @GL_GNULIB_MBSLEN@
+GL_GNULIB_MBSNCASECMP = @GL_GNULIB_MBSNCASECMP@
+GL_GNULIB_MBSNLEN = @GL_GNULIB_MBSNLEN@
+GL_GNULIB_MBSNRTOWCS = @GL_GNULIB_MBSNRTOWCS@
+GL_GNULIB_MBSPBRK = @GL_GNULIB_MBSPBRK@
+GL_GNULIB_MBSPCASECMP = @GL_GNULIB_MBSPCASECMP@
+GL_GNULIB_MBSRCHR = @GL_GNULIB_MBSRCHR@
+GL_GNULIB_MBSRTOWCS = @GL_GNULIB_MBSRTOWCS@
+GL_GNULIB_MBSSEP = @GL_GNULIB_MBSSEP@
+GL_GNULIB_MBSSPN = @GL_GNULIB_MBSSPN@
+GL_GNULIB_MBSSTR = @GL_GNULIB_MBSSTR@
+GL_GNULIB_MBSTOK_R = @GL_GNULIB_MBSTOK_R@
+GL_GNULIB_MBTOWC = @GL_GNULIB_MBTOWC@
+GL_GNULIB_MDA_ACCESS = @GL_GNULIB_MDA_ACCESS@
+GL_GNULIB_MDA_CHDIR = @GL_GNULIB_MDA_CHDIR@
+GL_GNULIB_MDA_CHMOD = @GL_GNULIB_MDA_CHMOD@
+GL_GNULIB_MDA_CLOSE = @GL_GNULIB_MDA_CLOSE@
+GL_GNULIB_MDA_CREAT = @GL_GNULIB_MDA_CREAT@
+GL_GNULIB_MDA_DUP = @GL_GNULIB_MDA_DUP@
+GL_GNULIB_MDA_DUP2 = @GL_GNULIB_MDA_DUP2@
+GL_GNULIB_MDA_ECVT = @GL_GNULIB_MDA_ECVT@
+GL_GNULIB_MDA_EXECL = @GL_GNULIB_MDA_EXECL@
+GL_GNULIB_MDA_EXECLE = @GL_GNULIB_MDA_EXECLE@
+GL_GNULIB_MDA_EXECLP = @GL_GNULIB_MDA_EXECLP@
+GL_GNULIB_MDA_EXECV = @GL_GNULIB_MDA_EXECV@
+GL_GNULIB_MDA_EXECVE = @GL_GNULIB_MDA_EXECVE@
+GL_GNULIB_MDA_EXECVP = @GL_GNULIB_MDA_EXECVP@
+GL_GNULIB_MDA_EXECVPE = @GL_GNULIB_MDA_EXECVPE@
+GL_GNULIB_MDA_FCLOSEALL = @GL_GNULIB_MDA_FCLOSEALL@
+GL_GNULIB_MDA_FCVT = @GL_GNULIB_MDA_FCVT@
+GL_GNULIB_MDA_FDOPEN = @GL_GNULIB_MDA_FDOPEN@
+GL_GNULIB_MDA_FILENO = @GL_GNULIB_MDA_FILENO@
+GL_GNULIB_MDA_GCVT = @GL_GNULIB_MDA_GCVT@
+GL_GNULIB_MDA_GETCWD = @GL_GNULIB_MDA_GETCWD@
+GL_GNULIB_MDA_GETPID = @GL_GNULIB_MDA_GETPID@
+GL_GNULIB_MDA_GETW = @GL_GNULIB_MDA_GETW@
+GL_GNULIB_MDA_ISATTY = @GL_GNULIB_MDA_ISATTY@
+GL_GNULIB_MDA_LSEEK = @GL_GNULIB_MDA_LSEEK@
+GL_GNULIB_MDA_MEMCCPY = @GL_GNULIB_MDA_MEMCCPY@
+GL_GNULIB_MDA_MKDIR = @GL_GNULIB_MDA_MKDIR@
+GL_GNULIB_MDA_MKTEMP = @GL_GNULIB_MDA_MKTEMP@
+GL_GNULIB_MDA_OPEN = @GL_GNULIB_MDA_OPEN@
+GL_GNULIB_MDA_PUTENV = @GL_GNULIB_MDA_PUTENV@
+GL_GNULIB_MDA_PUTW = @GL_GNULIB_MDA_PUTW@
+GL_GNULIB_MDA_READ = @GL_GNULIB_MDA_READ@
+GL_GNULIB_MDA_RMDIR = @GL_GNULIB_MDA_RMDIR@
+GL_GNULIB_MDA_STRDUP = @GL_GNULIB_MDA_STRDUP@
+GL_GNULIB_MDA_SWAB = @GL_GNULIB_MDA_SWAB@
+GL_GNULIB_MDA_TEMPNAM = @GL_GNULIB_MDA_TEMPNAM@
+GL_GNULIB_MDA_TZSET = @GL_GNULIB_MDA_TZSET@
+GL_GNULIB_MDA_UMASK = @GL_GNULIB_MDA_UMASK@
+GL_GNULIB_MDA_UNLINK = @GL_GNULIB_MDA_UNLINK@
+GL_GNULIB_MDA_WCSDUP = @GL_GNULIB_MDA_WCSDUP@
+GL_GNULIB_MDA_WRITE = @GL_GNULIB_MDA_WRITE@
+GL_GNULIB_MEMCHR = @GL_GNULIB_MEMCHR@
+GL_GNULIB_MEMMEM = @GL_GNULIB_MEMMEM@
+GL_GNULIB_MEMPCPY = @GL_GNULIB_MEMPCPY@
+GL_GNULIB_MEMRCHR = @GL_GNULIB_MEMRCHR@
+GL_GNULIB_MKDIR = @GL_GNULIB_MKDIR@
+GL_GNULIB_MKDIRAT = @GL_GNULIB_MKDIRAT@
+GL_GNULIB_MKDTEMP = @GL_GNULIB_MKDTEMP@
+GL_GNULIB_MKFIFO = @GL_GNULIB_MKFIFO@
+GL_GNULIB_MKFIFOAT = @GL_GNULIB_MKFIFOAT@
+GL_GNULIB_MKNOD = @GL_GNULIB_MKNOD@
+GL_GNULIB_MKNODAT = @GL_GNULIB_MKNODAT@
+GL_GNULIB_MKOSTEMP = @GL_GNULIB_MKOSTEMP@
+GL_GNULIB_MKOSTEMPS = @GL_GNULIB_MKOSTEMPS@
+GL_GNULIB_MKSTEMP = @GL_GNULIB_MKSTEMP@
+GL_GNULIB_MKSTEMPS = @GL_GNULIB_MKSTEMPS@
+GL_GNULIB_MKTIME = @GL_GNULIB_MKTIME@
+GL_GNULIB_NANOSLEEP = @GL_GNULIB_NANOSLEEP@
+GL_GNULIB_NL_LANGINFO = @GL_GNULIB_NL_LANGINFO@
+GL_GNULIB_NONBLOCKING = @GL_GNULIB_NONBLOCKING@
+GL_GNULIB_OBSTACK_PRINTF = @GL_GNULIB_OBSTACK_PRINTF@
+GL_GNULIB_OBSTACK_PRINTF_POSIX = @GL_GNULIB_OBSTACK_PRINTF_POSIX@
+GL_GNULIB_OPEN = @GL_GNULIB_OPEN@
+GL_GNULIB_OPENAT = @GL_GNULIB_OPENAT@
+GL_GNULIB_OPENDIR = @GL_GNULIB_OPENDIR@
+GL_GNULIB_OVERRIDES_STRUCT_STAT = @GL_GNULIB_OVERRIDES_STRUCT_STAT@
+GL_GNULIB_PCLOSE = @GL_GNULIB_PCLOSE@
+GL_GNULIB_PERROR = @GL_GNULIB_PERROR@
+GL_GNULIB_PIPE = @GL_GNULIB_PIPE@
+GL_GNULIB_PIPE2 = @GL_GNULIB_PIPE2@
+GL_GNULIB_POPEN = @GL_GNULIB_POPEN@
+GL_GNULIB_POSIX_MEMALIGN = @GL_GNULIB_POSIX_MEMALIGN@
+GL_GNULIB_POSIX_OPENPT = @GL_GNULIB_POSIX_OPENPT@
+GL_GNULIB_PREAD = @GL_GNULIB_PREAD@
+GL_GNULIB_PRINTF = @GL_GNULIB_PRINTF@
+GL_GNULIB_PRINTF_POSIX = @GL_GNULIB_PRINTF_POSIX@
+GL_GNULIB_PSELECT = @GL_GNULIB_PSELECT@
+GL_GNULIB_PTHREAD_COND = @GL_GNULIB_PTHREAD_COND@
+GL_GNULIB_PTHREAD_MUTEX = @GL_GNULIB_PTHREAD_MUTEX@
+GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK = @GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK@
+GL_GNULIB_PTHREAD_ONCE = @GL_GNULIB_PTHREAD_ONCE@
+GL_GNULIB_PTHREAD_RWLOCK = @GL_GNULIB_PTHREAD_RWLOCK@
+GL_GNULIB_PTHREAD_SIGMASK = @GL_GNULIB_PTHREAD_SIGMASK@
+GL_GNULIB_PTHREAD_SPIN = @GL_GNULIB_PTHREAD_SPIN@
+GL_GNULIB_PTHREAD_THREAD = @GL_GNULIB_PTHREAD_THREAD@
+GL_GNULIB_PTHREAD_TSS = @GL_GNULIB_PTHREAD_TSS@
+GL_GNULIB_PTSNAME = @GL_GNULIB_PTSNAME@
+GL_GNULIB_PTSNAME_R = @GL_GNULIB_PTSNAME_R@
+GL_GNULIB_PUTC = @GL_GNULIB_PUTC@
+GL_GNULIB_PUTCHAR = @GL_GNULIB_PUTCHAR@
+GL_GNULIB_PUTENV = @GL_GNULIB_PUTENV@
+GL_GNULIB_PUTS = @GL_GNULIB_PUTS@
+GL_GNULIB_PWRITE = @GL_GNULIB_PWRITE@
+GL_GNULIB_QSORT_R = @GL_GNULIB_QSORT_R@
+GL_GNULIB_RAISE = @GL_GNULIB_RAISE@
+GL_GNULIB_RANDOM = @GL_GNULIB_RANDOM@
+GL_GNULIB_RANDOM_R = @GL_GNULIB_RANDOM_R@
+GL_GNULIB_RAWMEMCHR = @GL_GNULIB_RAWMEMCHR@
+GL_GNULIB_READ = @GL_GNULIB_READ@
+GL_GNULIB_READDIR = @GL_GNULIB_READDIR@
+GL_GNULIB_READLINK = @GL_GNULIB_READLINK@
+GL_GNULIB_READLINKAT = @GL_GNULIB_READLINKAT@
+GL_GNULIB_REALLOCARRAY = @GL_GNULIB_REALLOCARRAY@
+GL_GNULIB_REALLOC_POSIX = @GL_GNULIB_REALLOC_POSIX@
+GL_GNULIB_REALPATH = @GL_GNULIB_REALPATH@
+GL_GNULIB_RECV = @GL_GNULIB_RECV@
+GL_GNULIB_RECVFROM = @GL_GNULIB_RECVFROM@
+GL_GNULIB_REMOVE = @GL_GNULIB_REMOVE@
+GL_GNULIB_RENAME = @GL_GNULIB_RENAME@
+GL_GNULIB_RENAMEAT = @GL_GNULIB_RENAMEAT@
+GL_GNULIB_REWINDDIR = @GL_GNULIB_REWINDDIR@
+GL_GNULIB_RMDIR = @GL_GNULIB_RMDIR@
+GL_GNULIB_RPMATCH = @GL_GNULIB_RPMATCH@
+GL_GNULIB_SCANDIR = @GL_GNULIB_SCANDIR@
+GL_GNULIB_SCANF = @GL_GNULIB_SCANF@
+GL_GNULIB_SCHED_YIELD = @GL_GNULIB_SCHED_YIELD@
+GL_GNULIB_SECURE_GETENV = @GL_GNULIB_SECURE_GETENV@
+GL_GNULIB_SELECT = @GL_GNULIB_SELECT@
+GL_GNULIB_SEND = @GL_GNULIB_SEND@
+GL_GNULIB_SENDTO = @GL_GNULIB_SENDTO@
+GL_GNULIB_SETENV = @GL_GNULIB_SETENV@
+GL_GNULIB_SETHOSTNAME = @GL_GNULIB_SETHOSTNAME@
+GL_GNULIB_SETLOCALE = @GL_GNULIB_SETLOCALE@
+GL_GNULIB_SETLOCALE_NULL = @GL_GNULIB_SETLOCALE_NULL@
+GL_GNULIB_SETSOCKOPT = @GL_GNULIB_SETSOCKOPT@
+GL_GNULIB_SHUTDOWN = @GL_GNULIB_SHUTDOWN@
+GL_GNULIB_SIGABBREV_NP = @GL_GNULIB_SIGABBREV_NP@
+GL_GNULIB_SIGACTION = @GL_GNULIB_SIGACTION@
+GL_GNULIB_SIGDESCR_NP = @GL_GNULIB_SIGDESCR_NP@
+GL_GNULIB_SIGNAL_H_SIGPIPE = @GL_GNULIB_SIGNAL_H_SIGPIPE@
+GL_GNULIB_SIGPROCMASK = @GL_GNULIB_SIGPROCMASK@
+GL_GNULIB_SLEEP = @GL_GNULIB_SLEEP@
+GL_GNULIB_SNPRINTF = @GL_GNULIB_SNPRINTF@
+GL_GNULIB_SOCKET = @GL_GNULIB_SOCKET@
+GL_GNULIB_SPRINTF_POSIX = @GL_GNULIB_SPRINTF_POSIX@
+GL_GNULIB_STAT = @GL_GNULIB_STAT@
+GL_GNULIB_STDIO_H_NONBLOCKING = @GL_GNULIB_STDIO_H_NONBLOCKING@
+GL_GNULIB_STDIO_H_SIGPIPE = @GL_GNULIB_STDIO_H_SIGPIPE@
+GL_GNULIB_STPCPY = @GL_GNULIB_STPCPY@
+GL_GNULIB_STPNCPY = @GL_GNULIB_STPNCPY@
+GL_GNULIB_STRCASESTR = @GL_GNULIB_STRCASESTR@
+GL_GNULIB_STRCHRNUL = @GL_GNULIB_STRCHRNUL@
+GL_GNULIB_STRDUP = @GL_GNULIB_STRDUP@
+GL_GNULIB_STRERROR = @GL_GNULIB_STRERROR@
+GL_GNULIB_STRERRORNAME_NP = @GL_GNULIB_STRERRORNAME_NP@
+GL_GNULIB_STRERROR_R = @GL_GNULIB_STRERROR_R@
+GL_GNULIB_STRFTIME = @GL_GNULIB_STRFTIME@
+GL_GNULIB_STRNCAT = @GL_GNULIB_STRNCAT@
+GL_GNULIB_STRNDUP = @GL_GNULIB_STRNDUP@
+GL_GNULIB_STRNLEN = @GL_GNULIB_STRNLEN@
+GL_GNULIB_STRPBRK = @GL_GNULIB_STRPBRK@
+GL_GNULIB_STRPTIME = @GL_GNULIB_STRPTIME@
+GL_GNULIB_STRSEP = @GL_GNULIB_STRSEP@
+GL_GNULIB_STRSIGNAL = @GL_GNULIB_STRSIGNAL@
+GL_GNULIB_STRSTR = @GL_GNULIB_STRSTR@
+GL_GNULIB_STRTOD = @GL_GNULIB_STRTOD@
+GL_GNULIB_STRTOIMAX = @GL_GNULIB_STRTOIMAX@
+GL_GNULIB_STRTOK_R = @GL_GNULIB_STRTOK_R@
+GL_GNULIB_STRTOL = @GL_GNULIB_STRTOL@
+GL_GNULIB_STRTOLD = @GL_GNULIB_STRTOLD@
+GL_GNULIB_STRTOLL = @GL_GNULIB_STRTOLL@
+GL_GNULIB_STRTOUL = @GL_GNULIB_STRTOUL@
+GL_GNULIB_STRTOULL = @GL_GNULIB_STRTOULL@
+GL_GNULIB_STRTOUMAX = @GL_GNULIB_STRTOUMAX@
+GL_GNULIB_STRVERSCMP = @GL_GNULIB_STRVERSCMP@
+GL_GNULIB_SYMLINK = @GL_GNULIB_SYMLINK@
+GL_GNULIB_SYMLINKAT = @GL_GNULIB_SYMLINKAT@
+GL_GNULIB_SYSTEM_POSIX = @GL_GNULIB_SYSTEM_POSIX@
+GL_GNULIB_TIMEGM = @GL_GNULIB_TIMEGM@
+GL_GNULIB_TIMESPEC_GET = @GL_GNULIB_TIMESPEC_GET@
+GL_GNULIB_TIME_R = @GL_GNULIB_TIME_R@
+GL_GNULIB_TIME_RZ = @GL_GNULIB_TIME_RZ@
+GL_GNULIB_TMPFILE = @GL_GNULIB_TMPFILE@
+GL_GNULIB_TOWCTRANS = @GL_GNULIB_TOWCTRANS@
+GL_GNULIB_TRUNCATE = @GL_GNULIB_TRUNCATE@
+GL_GNULIB_TTYNAME_R = @GL_GNULIB_TTYNAME_R@
+GL_GNULIB_TZSET = @GL_GNULIB_TZSET@
+GL_GNULIB_UNISTD_H_GETOPT = @GL_GNULIB_UNISTD_H_GETOPT@
+GL_GNULIB_UNISTD_H_NONBLOCKING = @GL_GNULIB_UNISTD_H_NONBLOCKING@
+GL_GNULIB_UNISTD_H_SIGPIPE = @GL_GNULIB_UNISTD_H_SIGPIPE@
+GL_GNULIB_UNLINK = @GL_GNULIB_UNLINK@
+GL_GNULIB_UNLINKAT = @GL_GNULIB_UNLINKAT@
+GL_GNULIB_UNLOCKPT = @GL_GNULIB_UNLOCKPT@
+GL_GNULIB_UNSETENV = @GL_GNULIB_UNSETENV@
+GL_GNULIB_USLEEP = @GL_GNULIB_USLEEP@
+GL_GNULIB_UTIMENSAT = @GL_GNULIB_UTIMENSAT@
+GL_GNULIB_VASPRINTF = @GL_GNULIB_VASPRINTF@
+GL_GNULIB_VDPRINTF = @GL_GNULIB_VDPRINTF@
+GL_GNULIB_VFPRINTF = @GL_GNULIB_VFPRINTF@
+GL_GNULIB_VFPRINTF_POSIX = @GL_GNULIB_VFPRINTF_POSIX@
+GL_GNULIB_VFSCANF = @GL_GNULIB_VFSCANF@
+GL_GNULIB_VPRINTF = @GL_GNULIB_VPRINTF@
+GL_GNULIB_VPRINTF_POSIX = @GL_GNULIB_VPRINTF_POSIX@
+GL_GNULIB_VSCANF = @GL_GNULIB_VSCANF@
+GL_GNULIB_VSNPRINTF = @GL_GNULIB_VSNPRINTF@
+GL_GNULIB_VSPRINTF_POSIX = @GL_GNULIB_VSPRINTF_POSIX@
+GL_GNULIB_WCPCPY = @GL_GNULIB_WCPCPY@
+GL_GNULIB_WCPNCPY = @GL_GNULIB_WCPNCPY@
+GL_GNULIB_WCRTOMB = @GL_GNULIB_WCRTOMB@
+GL_GNULIB_WCSCASECMP = @GL_GNULIB_WCSCASECMP@
+GL_GNULIB_WCSCAT = @GL_GNULIB_WCSCAT@
+GL_GNULIB_WCSCHR = @GL_GNULIB_WCSCHR@
+GL_GNULIB_WCSCMP = @GL_GNULIB_WCSCMP@
+GL_GNULIB_WCSCOLL = @GL_GNULIB_WCSCOLL@
+GL_GNULIB_WCSCPY = @GL_GNULIB_WCSCPY@
+GL_GNULIB_WCSCSPN = @GL_GNULIB_WCSCSPN@
+GL_GNULIB_WCSDUP = @GL_GNULIB_WCSDUP@
+GL_GNULIB_WCSFTIME = @GL_GNULIB_WCSFTIME@
+GL_GNULIB_WCSLEN = @GL_GNULIB_WCSLEN@
+GL_GNULIB_WCSNCASECMP = @GL_GNULIB_WCSNCASECMP@
+GL_GNULIB_WCSNCAT = @GL_GNULIB_WCSNCAT@
+GL_GNULIB_WCSNCMP = @GL_GNULIB_WCSNCMP@
+GL_GNULIB_WCSNCPY = @GL_GNULIB_WCSNCPY@
+GL_GNULIB_WCSNLEN = @GL_GNULIB_WCSNLEN@
+GL_GNULIB_WCSNRTOMBS = @GL_GNULIB_WCSNRTOMBS@
+GL_GNULIB_WCSPBRK = @GL_GNULIB_WCSPBRK@
+GL_GNULIB_WCSRCHR = @GL_GNULIB_WCSRCHR@
+GL_GNULIB_WCSRTOMBS = @GL_GNULIB_WCSRTOMBS@
+GL_GNULIB_WCSSPN = @GL_GNULIB_WCSSPN@
+GL_GNULIB_WCSSTR = @GL_GNULIB_WCSSTR@
+GL_GNULIB_WCSTOK = @GL_GNULIB_WCSTOK@
+GL_GNULIB_WCSWIDTH = @GL_GNULIB_WCSWIDTH@
+GL_GNULIB_WCSXFRM = @GL_GNULIB_WCSXFRM@
+GL_GNULIB_WCTOB = @GL_GNULIB_WCTOB@
+GL_GNULIB_WCTOMB = @GL_GNULIB_WCTOMB@
+GL_GNULIB_WCTRANS = @GL_GNULIB_WCTRANS@
+GL_GNULIB_WCTYPE = @GL_GNULIB_WCTYPE@
+GL_GNULIB_WCWIDTH = @GL_GNULIB_WCWIDTH@
+GL_GNULIB_WMEMCHR = @GL_GNULIB_WMEMCHR@
+GL_GNULIB_WMEMCMP = @GL_GNULIB_WMEMCMP@
+GL_GNULIB_WMEMCPY = @GL_GNULIB_WMEMCPY@
+GL_GNULIB_WMEMMOVE = @GL_GNULIB_WMEMMOVE@
+GL_GNULIB_WMEMPCPY = @GL_GNULIB_WMEMPCPY@
+GL_GNULIB_WMEMSET = @GL_GNULIB_WMEMSET@
+GL_GNULIB_WRITE = @GL_GNULIB_WRITE@
+GL_GNULIB__EXIT = @GL_GNULIB__EXIT@
+GMSGFMT = @GMSGFMT@
+GMSGFMT_015 = @GMSGFMT_015@
+GNULIBHEADERS_OVERRIDE_WINT_T = @GNULIBHEADERS_OVERRIDE_WINT_T@
+GNULIB_GETTIMEOFDAY = @GNULIB_GETTIMEOFDAY@
+GNULIB_TEST_WARN_CFLAGS = @GNULIB_TEST_WARN_CFLAGS@
+GNULIB_WARN_CFLAGS = @GNULIB_WARN_CFLAGS@
+GREP = @GREP@
+HAVE_ACCEPT4 = @HAVE_ACCEPT4@
+HAVE_ALIGNED_ALLOC = @HAVE_ALIGNED_ALLOC@
+HAVE_ALLOCA_H = @HAVE_ALLOCA_H@
+HAVE_ALPHASORT = @HAVE_ALPHASORT@
+HAVE_ARPA_INET_H = @HAVE_ARPA_INET_H@
+HAVE_ATOLL = @HAVE_ATOLL@
+HAVE_BTOWC = @HAVE_BTOWC@
+HAVE_C99_STDINT_H = @HAVE_C99_STDINT_H@
+HAVE_CANONICALIZE_FILE_NAME = @HAVE_CANONICALIZE_FILE_NAME@
+HAVE_CHOWN = @HAVE_CHOWN@
+HAVE_CLOSEDIR = @HAVE_CLOSEDIR@
+HAVE_COPY_FILE_RANGE = @HAVE_COPY_FILE_RANGE@
+HAVE_CRTDEFS_H = @HAVE_CRTDEFS_H@
+HAVE_DECL_DIRFD = @HAVE_DECL_DIRFD@
+HAVE_DECL_ECVT = @HAVE_DECL_ECVT@
+HAVE_DECL_ENVIRON = @HAVE_DECL_ENVIRON@
+HAVE_DECL_EXECVPE = @HAVE_DECL_EXECVPE@
+HAVE_DECL_FCHDIR = @HAVE_DECL_FCHDIR@
+HAVE_DECL_FCLOSEALL = @HAVE_DECL_FCLOSEALL@
+HAVE_DECL_FCVT = @HAVE_DECL_FCVT@
+HAVE_DECL_FDATASYNC = @HAVE_DECL_FDATASYNC@
+HAVE_DECL_FDOPENDIR = @HAVE_DECL_FDOPENDIR@
+HAVE_DECL_FPURGE = @HAVE_DECL_FPURGE@
+HAVE_DECL_FSEEKO = @HAVE_DECL_FSEEKO@
+HAVE_DECL_FTELLO = @HAVE_DECL_FTELLO@
+HAVE_DECL_GCVT = @HAVE_DECL_GCVT@
+HAVE_DECL_GETDELIM = @HAVE_DECL_GETDELIM@
+HAVE_DECL_GETDOMAINNAME = @HAVE_DECL_GETDOMAINNAME@
+HAVE_DECL_GETLINE = @HAVE_DECL_GETLINE@
+HAVE_DECL_GETLOADAVG = @HAVE_DECL_GETLOADAVG@
+HAVE_DECL_GETLOGIN = @HAVE_DECL_GETLOGIN@
+HAVE_DECL_GETLOGIN_R = @HAVE_DECL_GETLOGIN_R@
+HAVE_DECL_GETPAGESIZE = @HAVE_DECL_GETPAGESIZE@
+HAVE_DECL_GETUSERSHELL = @HAVE_DECL_GETUSERSHELL@
+HAVE_DECL_IMAXABS = @HAVE_DECL_IMAXABS@
+HAVE_DECL_IMAXDIV = @HAVE_DECL_IMAXDIV@
+HAVE_DECL_INET_NTOP = @HAVE_DECL_INET_NTOP@
+HAVE_DECL_INET_PTON = @HAVE_DECL_INET_PTON@
+HAVE_DECL_INITSTATE = @HAVE_DECL_INITSTATE@
+HAVE_DECL_LOCALTIME_R = @HAVE_DECL_LOCALTIME_R@
+HAVE_DECL_MEMMEM = @HAVE_DECL_MEMMEM@
+HAVE_DECL_MEMRCHR = @HAVE_DECL_MEMRCHR@
+HAVE_DECL_OBSTACK_PRINTF = @HAVE_DECL_OBSTACK_PRINTF@
+HAVE_DECL_SETENV = @HAVE_DECL_SETENV@
+HAVE_DECL_SETHOSTNAME = @HAVE_DECL_SETHOSTNAME@
+HAVE_DECL_SETSTATE = @HAVE_DECL_SETSTATE@
+HAVE_DECL_SNPRINTF = @HAVE_DECL_SNPRINTF@
+HAVE_DECL_STRDUP = @HAVE_DECL_STRDUP@
+HAVE_DECL_STRERROR_R = @HAVE_DECL_STRERROR_R@
+HAVE_DECL_STRNDUP = @HAVE_DECL_STRNDUP@
+HAVE_DECL_STRNLEN = @HAVE_DECL_STRNLEN@
+HAVE_DECL_STRSIGNAL = @HAVE_DECL_STRSIGNAL@
+HAVE_DECL_STRTOIMAX = @HAVE_DECL_STRTOIMAX@
+HAVE_DECL_STRTOK_R = @HAVE_DECL_STRTOK_R@
+HAVE_DECL_STRTOUMAX = @HAVE_DECL_STRTOUMAX@
+HAVE_DECL_TRUNCATE = @HAVE_DECL_TRUNCATE@
+HAVE_DECL_TTYNAME_R = @HAVE_DECL_TTYNAME_R@
+HAVE_DECL_UNSETENV = @HAVE_DECL_UNSETENV@
+HAVE_DECL_VSNPRINTF = @HAVE_DECL_VSNPRINTF@
+HAVE_DECL_WCSDUP = @HAVE_DECL_WCSDUP@
+HAVE_DECL_WCTOB = @HAVE_DECL_WCTOB@
+HAVE_DECL_WCWIDTH = @HAVE_DECL_WCWIDTH@
+HAVE_DIRENT_H = @HAVE_DIRENT_H@
+HAVE_DPRINTF = @HAVE_DPRINTF@
+HAVE_DUP3 = @HAVE_DUP3@
+HAVE_DUPLOCALE = @HAVE_DUPLOCALE@
+HAVE_EUIDACCESS = @HAVE_EUIDACCESS@
+HAVE_EXECVPE = @HAVE_EXECVPE@
+HAVE_EXPLICIT_BZERO = @HAVE_EXPLICIT_BZERO@
+HAVE_FACCESSAT = @HAVE_FACCESSAT@
+HAVE_FCHDIR = @HAVE_FCHDIR@
+HAVE_FCHMODAT = @HAVE_FCHMODAT@
+HAVE_FCHOWNAT = @HAVE_FCHOWNAT@
+HAVE_FCNTL = @HAVE_FCNTL@
+HAVE_FDATASYNC = @HAVE_FDATASYNC@
+HAVE_FDOPENDIR = @HAVE_FDOPENDIR@
+HAVE_FEATURES_H = @HAVE_FEATURES_H@
+HAVE_FFSL = @HAVE_FFSL@
+HAVE_FFSLL = @HAVE_FFSLL@
+HAVE_FNMATCH = @HAVE_FNMATCH@
+HAVE_FNMATCH_H = @HAVE_FNMATCH_H@
+HAVE_FREELOCALE = @HAVE_FREELOCALE@
+HAVE_FSEEKO = @HAVE_FSEEKO@
+HAVE_FSTATAT = @HAVE_FSTATAT@
+HAVE_FSYNC = @HAVE_FSYNC@
+HAVE_FTELLO = @HAVE_FTELLO@
+HAVE_FTRUNCATE = @HAVE_FTRUNCATE@
+HAVE_FUTIMENS = @HAVE_FUTIMENS@
+HAVE_GETDTABLESIZE = @HAVE_GETDTABLESIZE@
+HAVE_GETENTROPY = @HAVE_GETENTROPY@
+HAVE_GETGROUPS = @HAVE_GETGROUPS@
+HAVE_GETHOSTNAME = @HAVE_GETHOSTNAME@
+HAVE_GETLOGIN = @HAVE_GETLOGIN@
+HAVE_GETOPT_H = @HAVE_GETOPT_H@
+HAVE_GETPAGESIZE = @HAVE_GETPAGESIZE@
+HAVE_GETPASS = @HAVE_GETPASS@
+HAVE_GETSUBOPT = @HAVE_GETSUBOPT@
+HAVE_GETTIMEOFDAY = @HAVE_GETTIMEOFDAY@
+HAVE_GETUMASK = @HAVE_GETUMASK@
+HAVE_GRANTPT = @HAVE_GRANTPT@
+HAVE_GROUP_MEMBER = @HAVE_GROUP_MEMBER@
+HAVE_IMAXDIV_T = @HAVE_IMAXDIV_T@
+HAVE_INITSTATE = @HAVE_INITSTATE@
+HAVE_INTTYPES_H = @HAVE_INTTYPES_H@
+HAVE_ISBLANK = @HAVE_ISBLANK@
+HAVE_ISWBLANK = @HAVE_ISWBLANK@
+HAVE_ISWCNTRL = @HAVE_ISWCNTRL@
+HAVE_LANGINFO_ALTMON = @HAVE_LANGINFO_ALTMON@
+HAVE_LANGINFO_CODESET = @HAVE_LANGINFO_CODESET@
+HAVE_LANGINFO_ERA = @HAVE_LANGINFO_ERA@
+HAVE_LANGINFO_H = @HAVE_LANGINFO_H@
+HAVE_LANGINFO_T_FMT_AMPM = @HAVE_LANGINFO_T_FMT_AMPM@
+HAVE_LANGINFO_YESEXPR = @HAVE_LANGINFO_YESEXPR@
+HAVE_LCHMOD = @HAVE_LCHMOD@
+HAVE_LCHOWN = @HAVE_LCHOWN@
+HAVE_LIBSIGSEGV = @HAVE_LIBSIGSEGV@
+HAVE_LINK = @HAVE_LINK@
+HAVE_LINKAT = @HAVE_LINKAT@
+HAVE_LSTAT = @HAVE_LSTAT@
+HAVE_MAX_ALIGN_T = @HAVE_MAX_ALIGN_T@
+HAVE_MBRLEN = @HAVE_MBRLEN@
+HAVE_MBRTOWC = @HAVE_MBRTOWC@
+HAVE_MBSINIT = @HAVE_MBSINIT@
+HAVE_MBSLEN = @HAVE_MBSLEN@
+HAVE_MBSNRTOWCS = @HAVE_MBSNRTOWCS@
+HAVE_MBSRTOWCS = @HAVE_MBSRTOWCS@
+HAVE_MBTOWC = @HAVE_MBTOWC@
+HAVE_MEMPCPY = @HAVE_MEMPCPY@
+HAVE_MKDIRAT = @HAVE_MKDIRAT@
+HAVE_MKDTEMP = @HAVE_MKDTEMP@
+HAVE_MKFIFO = @HAVE_MKFIFO@
+HAVE_MKFIFOAT = @HAVE_MKFIFOAT@
+HAVE_MKNOD = @HAVE_MKNOD@
+HAVE_MKNODAT = @HAVE_MKNODAT@
+HAVE_MKOSTEMP = @HAVE_MKOSTEMP@
+HAVE_MKOSTEMPS = @HAVE_MKOSTEMPS@
+HAVE_MKSTEMP = @HAVE_MKSTEMP@
+HAVE_MKSTEMPS = @HAVE_MKSTEMPS@
+HAVE_MSVC_INVALID_PARAMETER_HANDLER = @HAVE_MSVC_INVALID_PARAMETER_HANDLER@
+HAVE_NANOSLEEP = @HAVE_NANOSLEEP@
+HAVE_NETINET_IN_H = @HAVE_NETINET_IN_H@
+HAVE_NEWLOCALE = @HAVE_NEWLOCALE@
+HAVE_NL_LANGINFO = @HAVE_NL_LANGINFO@
+HAVE_OPENAT = @HAVE_OPENAT@
+HAVE_OPENDIR = @HAVE_OPENDIR@
+HAVE_OS_H = @HAVE_OS_H@
+HAVE_PCLOSE = @HAVE_PCLOSE@
+HAVE_PIPE = @HAVE_PIPE@
+HAVE_PIPE2 = @HAVE_PIPE2@
+HAVE_POPEN = @HAVE_POPEN@
+HAVE_POSIX_MEMALIGN = @HAVE_POSIX_MEMALIGN@
+HAVE_POSIX_OPENPT = @HAVE_POSIX_OPENPT@
+HAVE_POSIX_SIGNALBLOCKING = @HAVE_POSIX_SIGNALBLOCKING@
+HAVE_PREAD = @HAVE_PREAD@
+HAVE_PSELECT = @HAVE_PSELECT@
+HAVE_PTHREAD_ATTR_DESTROY = @HAVE_PTHREAD_ATTR_DESTROY@
+HAVE_PTHREAD_ATTR_GETDETACHSTATE = @HAVE_PTHREAD_ATTR_GETDETACHSTATE@
+HAVE_PTHREAD_ATTR_INIT = @HAVE_PTHREAD_ATTR_INIT@
+HAVE_PTHREAD_ATTR_SETDETACHSTATE = @HAVE_PTHREAD_ATTR_SETDETACHSTATE@
+HAVE_PTHREAD_CONDATTR_DESTROY = @HAVE_PTHREAD_CONDATTR_DESTROY@
+HAVE_PTHREAD_CONDATTR_INIT = @HAVE_PTHREAD_CONDATTR_INIT@
+HAVE_PTHREAD_COND_BROADCAST = @HAVE_PTHREAD_COND_BROADCAST@
+HAVE_PTHREAD_COND_DESTROY = @HAVE_PTHREAD_COND_DESTROY@
+HAVE_PTHREAD_COND_INIT = @HAVE_PTHREAD_COND_INIT@
+HAVE_PTHREAD_COND_SIGNAL = @HAVE_PTHREAD_COND_SIGNAL@
+HAVE_PTHREAD_COND_TIMEDWAIT = @HAVE_PTHREAD_COND_TIMEDWAIT@
+HAVE_PTHREAD_COND_WAIT = @HAVE_PTHREAD_COND_WAIT@
+HAVE_PTHREAD_CREATE = @HAVE_PTHREAD_CREATE@
+HAVE_PTHREAD_CREATE_DETACHED = @HAVE_PTHREAD_CREATE_DETACHED@
+HAVE_PTHREAD_DETACH = @HAVE_PTHREAD_DETACH@
+HAVE_PTHREAD_EQUAL = @HAVE_PTHREAD_EQUAL@
+HAVE_PTHREAD_EXIT = @HAVE_PTHREAD_EXIT@
+HAVE_PTHREAD_GETSPECIFIC = @HAVE_PTHREAD_GETSPECIFIC@
+HAVE_PTHREAD_H = @HAVE_PTHREAD_H@
+HAVE_PTHREAD_JOIN = @HAVE_PTHREAD_JOIN@
+HAVE_PTHREAD_KEY_CREATE = @HAVE_PTHREAD_KEY_CREATE@
+HAVE_PTHREAD_KEY_DELETE = @HAVE_PTHREAD_KEY_DELETE@
+HAVE_PTHREAD_MUTEXATTR_DESTROY = @HAVE_PTHREAD_MUTEXATTR_DESTROY@
+HAVE_PTHREAD_MUTEXATTR_GETROBUST = @HAVE_PTHREAD_MUTEXATTR_GETROBUST@
+HAVE_PTHREAD_MUTEXATTR_GETTYPE = @HAVE_PTHREAD_MUTEXATTR_GETTYPE@
+HAVE_PTHREAD_MUTEXATTR_INIT = @HAVE_PTHREAD_MUTEXATTR_INIT@
+HAVE_PTHREAD_MUTEXATTR_SETROBUST = @HAVE_PTHREAD_MUTEXATTR_SETROBUST@
+HAVE_PTHREAD_MUTEXATTR_SETTYPE = @HAVE_PTHREAD_MUTEXATTR_SETTYPE@
+HAVE_PTHREAD_MUTEX_DESTROY = @HAVE_PTHREAD_MUTEX_DESTROY@
+HAVE_PTHREAD_MUTEX_INIT = @HAVE_PTHREAD_MUTEX_INIT@
+HAVE_PTHREAD_MUTEX_LOCK = @HAVE_PTHREAD_MUTEX_LOCK@
+HAVE_PTHREAD_MUTEX_RECURSIVE = @HAVE_PTHREAD_MUTEX_RECURSIVE@
+HAVE_PTHREAD_MUTEX_ROBUST = @HAVE_PTHREAD_MUTEX_ROBUST@
+HAVE_PTHREAD_MUTEX_TIMEDLOCK = @HAVE_PTHREAD_MUTEX_TIMEDLOCK@
+HAVE_PTHREAD_MUTEX_TRYLOCK = @HAVE_PTHREAD_MUTEX_TRYLOCK@
+HAVE_PTHREAD_MUTEX_UNLOCK = @HAVE_PTHREAD_MUTEX_UNLOCK@
+HAVE_PTHREAD_ONCE = @HAVE_PTHREAD_ONCE@
+HAVE_PTHREAD_PROCESS_SHARED = @HAVE_PTHREAD_PROCESS_SHARED@
+HAVE_PTHREAD_RWLOCKATTR_DESTROY = @HAVE_PTHREAD_RWLOCKATTR_DESTROY@
+HAVE_PTHREAD_RWLOCKATTR_INIT = @HAVE_PTHREAD_RWLOCKATTR_INIT@
+HAVE_PTHREAD_RWLOCK_DESTROY = @HAVE_PTHREAD_RWLOCK_DESTROY@
+HAVE_PTHREAD_RWLOCK_INIT = @HAVE_PTHREAD_RWLOCK_INIT@
+HAVE_PTHREAD_RWLOCK_RDLOCK = @HAVE_PTHREAD_RWLOCK_RDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+HAVE_PTHREAD_RWLOCK_TRYRDLOCK = @HAVE_PTHREAD_RWLOCK_TRYRDLOCK@
+HAVE_PTHREAD_RWLOCK_TRYWRLOCK = @HAVE_PTHREAD_RWLOCK_TRYWRLOCK@
+HAVE_PTHREAD_RWLOCK_UNLOCK = @HAVE_PTHREAD_RWLOCK_UNLOCK@
+HAVE_PTHREAD_RWLOCK_WRLOCK = @HAVE_PTHREAD_RWLOCK_WRLOCK@
+HAVE_PTHREAD_SELF = @HAVE_PTHREAD_SELF@
+HAVE_PTHREAD_SETSPECIFIC = @HAVE_PTHREAD_SETSPECIFIC@
+HAVE_PTHREAD_SIGMASK = @HAVE_PTHREAD_SIGMASK@
+HAVE_PTHREAD_SPINLOCK_T = @HAVE_PTHREAD_SPINLOCK_T@
+HAVE_PTHREAD_SPIN_DESTROY = @HAVE_PTHREAD_SPIN_DESTROY@
+HAVE_PTHREAD_SPIN_INIT = @HAVE_PTHREAD_SPIN_INIT@
+HAVE_PTHREAD_SPIN_LOCK = @HAVE_PTHREAD_SPIN_LOCK@
+HAVE_PTHREAD_SPIN_TRYLOCK = @HAVE_PTHREAD_SPIN_TRYLOCK@
+HAVE_PTHREAD_SPIN_UNLOCK = @HAVE_PTHREAD_SPIN_UNLOCK@
+HAVE_PTHREAD_T = @HAVE_PTHREAD_T@
+HAVE_PTSNAME = @HAVE_PTSNAME@
+HAVE_PTSNAME_R = @HAVE_PTSNAME_R@
+HAVE_PWRITE = @HAVE_PWRITE@
+HAVE_QSORT_R = @HAVE_QSORT_R@
+HAVE_RAISE = @HAVE_RAISE@
+HAVE_RANDOM = @HAVE_RANDOM@
+HAVE_RANDOM_H = @HAVE_RANDOM_H@
+HAVE_RANDOM_R = @HAVE_RANDOM_R@
+HAVE_RAWMEMCHR = @HAVE_RAWMEMCHR@
+HAVE_READDIR = @HAVE_READDIR@
+HAVE_READLINK = @HAVE_READLINK@
+HAVE_READLINKAT = @HAVE_READLINKAT@
+HAVE_REALLOCARRAY = @HAVE_REALLOCARRAY@
+HAVE_REALPATH = @HAVE_REALPATH@
+HAVE_RENAMEAT = @HAVE_RENAMEAT@
+HAVE_REWINDDIR = @HAVE_REWINDDIR@
+HAVE_RPMATCH = @HAVE_RPMATCH@
+HAVE_SA_FAMILY_T = @HAVE_SA_FAMILY_T@
+HAVE_SCANDIR = @HAVE_SCANDIR@
+HAVE_SCHED_H = @HAVE_SCHED_H@
+HAVE_SCHED_YIELD = @HAVE_SCHED_YIELD@
+HAVE_SECURE_GETENV = @HAVE_SECURE_GETENV@
+HAVE_SETENV = @HAVE_SETENV@
+HAVE_SETHOSTNAME = @HAVE_SETHOSTNAME@
+HAVE_SETSTATE = @HAVE_SETSTATE@
+HAVE_SIGABBREV_NP = @HAVE_SIGABBREV_NP@
+HAVE_SIGACTION = @HAVE_SIGACTION@
+HAVE_SIGDESCR_NP = @HAVE_SIGDESCR_NP@
+HAVE_SIGHANDLER_T = @HAVE_SIGHANDLER_T@
+HAVE_SIGINFO_T = @HAVE_SIGINFO_T@
+HAVE_SIGNED_SIG_ATOMIC_T = @HAVE_SIGNED_SIG_ATOMIC_T@
+HAVE_SIGNED_WCHAR_T = @HAVE_SIGNED_WCHAR_T@
+HAVE_SIGNED_WINT_T = @HAVE_SIGNED_WINT_T@
+HAVE_SIGSET_T = @HAVE_SIGSET_T@
+HAVE_SLEEP = @HAVE_SLEEP@
+HAVE_STDINT_H = @HAVE_STDINT_H@
+HAVE_STPCPY = @HAVE_STPCPY@
+HAVE_STPNCPY = @HAVE_STPNCPY@
+HAVE_STRCASESTR = @HAVE_STRCASESTR@
+HAVE_STRCHRNUL = @HAVE_STRCHRNUL@
+HAVE_STRERRORNAME_NP = @HAVE_STRERRORNAME_NP@
+HAVE_STRPBRK = @HAVE_STRPBRK@
+HAVE_STRPTIME = @HAVE_STRPTIME@
+HAVE_STRSEP = @HAVE_STRSEP@
+HAVE_STRTOD = @HAVE_STRTOD@
+HAVE_STRTOL = @HAVE_STRTOL@
+HAVE_STRTOLD = @HAVE_STRTOLD@
+HAVE_STRTOLL = @HAVE_STRTOLL@
+HAVE_STRTOUL = @HAVE_STRTOUL@
+HAVE_STRTOULL = @HAVE_STRTOULL@
+HAVE_STRUCT_RANDOM_DATA = @HAVE_STRUCT_RANDOM_DATA@
+HAVE_STRUCT_SCHED_PARAM = @HAVE_STRUCT_SCHED_PARAM@
+HAVE_STRUCT_SIGACTION_SA_SIGACTION = @HAVE_STRUCT_SIGACTION_SA_SIGACTION@
+HAVE_STRUCT_SOCKADDR_STORAGE = @HAVE_STRUCT_SOCKADDR_STORAGE@
+HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = @HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY@
+HAVE_STRUCT_TIMEVAL = @HAVE_STRUCT_TIMEVAL@
+HAVE_STRVERSCMP = @HAVE_STRVERSCMP@
+HAVE_SYMLINK = @HAVE_SYMLINK@
+HAVE_SYMLINKAT = @HAVE_SYMLINKAT@
+HAVE_SYS_BITYPES_H = @HAVE_SYS_BITYPES_H@
+HAVE_SYS_CDEFS_H = @HAVE_SYS_CDEFS_H@
+HAVE_SYS_INTTYPES_H = @HAVE_SYS_INTTYPES_H@
+HAVE_SYS_IOCTL_H = @HAVE_SYS_IOCTL_H@
+HAVE_SYS_LOADAVG_H = @HAVE_SYS_LOADAVG_H@
+HAVE_SYS_PARAM_H = @HAVE_SYS_PARAM_H@
+HAVE_SYS_SELECT_H = @HAVE_SYS_SELECT_H@
+HAVE_SYS_SOCKET_H = @HAVE_SYS_SOCKET_H@
+HAVE_SYS_TIME_H = @HAVE_SYS_TIME_H@
+HAVE_SYS_TYPES_H = @HAVE_SYS_TYPES_H@
+HAVE_SYS_UIO_H = @HAVE_SYS_UIO_H@
+HAVE_TIMEGM = @HAVE_TIMEGM@
+HAVE_TIMESPEC_GET = @HAVE_TIMESPEC_GET@
+HAVE_TIMEZONE_T = @HAVE_TIMEZONE_T@
+HAVE_TYPE_VOLATILE_SIG_ATOMIC_T = @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
+HAVE_UNISTD_H = @HAVE_UNISTD_H@
+HAVE_UNLINKAT = @HAVE_UNLINKAT@
+HAVE_UNLOCKPT = @HAVE_UNLOCKPT@
+HAVE_USLEEP = @HAVE_USLEEP@
+HAVE_UTIMENSAT = @HAVE_UTIMENSAT@
+HAVE_VASPRINTF = @HAVE_VASPRINTF@
+HAVE_VDPRINTF = @HAVE_VDPRINTF@
+HAVE_VISIBILITY = @HAVE_VISIBILITY@
+HAVE_WCHAR_H = @HAVE_WCHAR_H@
+HAVE_WCHAR_T = @HAVE_WCHAR_T@
+HAVE_WCPCPY = @HAVE_WCPCPY@
+HAVE_WCPNCPY = @HAVE_WCPNCPY@
+HAVE_WCRTOMB = @HAVE_WCRTOMB@
+HAVE_WCSCASECMP = @HAVE_WCSCASECMP@
+HAVE_WCSCAT = @HAVE_WCSCAT@
+HAVE_WCSCHR = @HAVE_WCSCHR@
+HAVE_WCSCMP = @HAVE_WCSCMP@
+HAVE_WCSCOLL = @HAVE_WCSCOLL@
+HAVE_WCSCPY = @HAVE_WCSCPY@
+HAVE_WCSCSPN = @HAVE_WCSCSPN@
+HAVE_WCSDUP = @HAVE_WCSDUP@
+HAVE_WCSFTIME = @HAVE_WCSFTIME@
+HAVE_WCSLEN = @HAVE_WCSLEN@
+HAVE_WCSNCASECMP = @HAVE_WCSNCASECMP@
+HAVE_WCSNCAT = @HAVE_WCSNCAT@
+HAVE_WCSNCMP = @HAVE_WCSNCMP@
+HAVE_WCSNCPY = @HAVE_WCSNCPY@
+HAVE_WCSNLEN = @HAVE_WCSNLEN@
+HAVE_WCSNRTOMBS = @HAVE_WCSNRTOMBS@
+HAVE_WCSPBRK = @HAVE_WCSPBRK@
+HAVE_WCSRCHR = @HAVE_WCSRCHR@
+HAVE_WCSRTOMBS = @HAVE_WCSRTOMBS@
+HAVE_WCSSPN = @HAVE_WCSSPN@
+HAVE_WCSSTR = @HAVE_WCSSTR@
+HAVE_WCSTOK = @HAVE_WCSTOK@
+HAVE_WCSWIDTH = @HAVE_WCSWIDTH@
+HAVE_WCSXFRM = @HAVE_WCSXFRM@
+HAVE_WCTRANS_T = @HAVE_WCTRANS_T@
+HAVE_WCTYPE_H = @HAVE_WCTYPE_H@
+HAVE_WCTYPE_T = @HAVE_WCTYPE_T@
+HAVE_WINSOCK2_H = @HAVE_WINSOCK2_H@
+HAVE_WINT_T = @HAVE_WINT_T@
+HAVE_WMEMCHR = @HAVE_WMEMCHR@
+HAVE_WMEMCMP = @HAVE_WMEMCMP@
+HAVE_WMEMCPY = @HAVE_WMEMCPY@
+HAVE_WMEMMOVE = @HAVE_WMEMMOVE@
+HAVE_WMEMPCPY = @HAVE_WMEMPCPY@
+HAVE_WMEMSET = @HAVE_WMEMSET@
+HAVE_WS2TCPIP_H = @HAVE_WS2TCPIP_H@
+HAVE_XLOCALE_H = @HAVE_XLOCALE_H@
+HAVE__BOOL = @HAVE__BOOL@
+HAVE__EXIT = @HAVE__EXIT@
+HOST_CPU = @HOST_CPU@
+HOST_CPU_C_ABI = @HOST_CPU_C_ABI@
+ICONV_CONST = @ICONV_CONST@
+ICONV_H = @ICONV_H@
+INCLUDE_NEXT = @INCLUDE_NEXT@
+INCLUDE_NEXT_AS_FIRST_DIRECTIVE = @INCLUDE_NEXT_AS_FIRST_DIRECTIVE@
+INET_PTON_LIB = @INET_PTON_LIB@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INT32_MAX_LT_INTMAX_MAX = @INT32_MAX_LT_INTMAX_MAX@
+INT64_MAX_EQ_LONG_MAX = @INT64_MAX_EQ_LONG_MAX@
+INTLLIBS = @INTLLIBS@
+INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
+LDFLAGS = @LDFLAGS@
+LIBCSTACK = @LIBCSTACK@
+LIBGREPUTILS_LIBDEPS = @LIBGREPUTILS_LIBDEPS@
+LIBGREPUTILS_LTLIBDEPS = @LIBGREPUTILS_LTLIBDEPS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBMULTITHREAD = @LIBMULTITHREAD@
+LIBOBJS = @LIBOBJS@
+LIBPMULTITHREAD = @LIBPMULTITHREAD@
+LIBPTHREAD = @LIBPTHREAD@
+LIBS = @LIBS@
+LIBSIGSEGV = @LIBSIGSEGV@
+LIBSIGSEGV_PREFIX = @LIBSIGSEGV_PREFIX@
+LIBSOCKET = @LIBSOCKET@
+LIBSTDTHREAD = @LIBSTDTHREAD@
+LIBTESTS_LIBDEPS = @LIBTESTS_LIBDEPS@
+LIBTHREAD = @LIBTHREAD@
+LIBUNISTRING_UNISTR_H = @LIBUNISTRING_UNISTR_H@
+LIBUNISTRING_UNITYPES_H = @LIBUNISTRING_UNITYPES_H@
+LIBUNISTRING_UNIWIDTH_H = @LIBUNISTRING_UNIWIDTH_H@
+LIB_HARD_LOCALE = @LIB_HARD_LOCALE@
+LIB_MBRTOWC = @LIB_MBRTOWC@
+LIB_NANOSLEEP = @LIB_NANOSLEEP@
+LIB_NL_LANGINFO = @LIB_NL_LANGINFO@
+LIB_PTHREAD = @LIB_PTHREAD@
+LIB_PTHREAD_SIGMASK = @LIB_PTHREAD_SIGMASK@
+LIB_SCHED_YIELD = @LIB_SCHED_YIELD@
+LIB_SELECT = @LIB_SELECT@
+LIB_SETLOCALE = @LIB_SETLOCALE@
+LIB_SETLOCALE_NULL = @LIB_SETLOCALE_NULL@
+LIMITS_H = @LIMITS_H@
+LOCALCHARSET_TESTS_ENVIRONMENT = @LOCALCHARSET_TESTS_ENVIRONMENT@
+LOCALENAME_ENHANCE_LOCALE_FUNCS = @LOCALENAME_ENHANCE_LOCALE_FUNCS@
+LOCALE_FR = @LOCALE_FR@
+LOCALE_FR_UTF8 = @LOCALE_FR_UTF8@
+LOCALE_JA = @LOCALE_JA@
+LOCALE_TR_UTF8 = @LOCALE_TR_UTF8@
+LOCALE_ZH_CN = @LOCALE_ZH_CN@
+LTLIBCSTACK = @LTLIBCSTACK@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBMULTITHREAD = @LTLIBMULTITHREAD@
+LTLIBOBJS = @LTLIBOBJS@
+LTLIBSIGSEGV = @LTLIBSIGSEGV@
+LTLIBTHREAD = @LTLIBTHREAD@
+MAKEINFO = @MAKEINFO@
+MKDIR_P = @MKDIR_P@
+MSGFMT = @MSGFMT@
+MSGFMT_015 = @MSGFMT_015@
+MSGMERGE = @MSGMERGE@
+NETINET_IN_H = @NETINET_IN_H@
+NEXT_ARPA_INET_H = @NEXT_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H = @NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_CTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_CTYPE_H@
+NEXT_AS_FIRST_DIRECTIVE_DIRENT_H = @NEXT_AS_FIRST_DIRECTIVE_DIRENT_H@
+NEXT_AS_FIRST_DIRECTIVE_ERRNO_H = @NEXT_AS_FIRST_DIRECTIVE_ERRNO_H@
+NEXT_AS_FIRST_DIRECTIVE_FCNTL_H = @NEXT_AS_FIRST_DIRECTIVE_FCNTL_H@
+NEXT_AS_FIRST_DIRECTIVE_FLOAT_H = @NEXT_AS_FIRST_DIRECTIVE_FLOAT_H@
+NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H = @NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H@
+NEXT_AS_FIRST_DIRECTIVE_GETOPT_H = @NEXT_AS_FIRST_DIRECTIVE_GETOPT_H@
+NEXT_AS_FIRST_DIRECTIVE_ICONV_H = @NEXT_AS_FIRST_DIRECTIVE_ICONV_H@
+NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H = @NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H = @NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H@
+NEXT_AS_FIRST_DIRECTIVE_LIMITS_H = @NEXT_AS_FIRST_DIRECTIVE_LIMITS_H@
+NEXT_AS_FIRST_DIRECTIVE_LOCALE_H = @NEXT_AS_FIRST_DIRECTIVE_LOCALE_H@
+NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H = @NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H@
+NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H = @NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H@
+NEXT_AS_FIRST_DIRECTIVE_SCHED_H = @NEXT_AS_FIRST_DIRECTIVE_SCHED_H@
+NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H = @NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H@
+NEXT_AS_FIRST_DIRECTIVE_STDARG_H = @NEXT_AS_FIRST_DIRECTIVE_STDARG_H@
+NEXT_AS_FIRST_DIRECTIVE_STDDEF_H = @NEXT_AS_FIRST_DIRECTIVE_STDDEF_H@
+NEXT_AS_FIRST_DIRECTIVE_STDINT_H = @NEXT_AS_FIRST_DIRECTIVE_STDINT_H@
+NEXT_AS_FIRST_DIRECTIVE_STDIO_H = @NEXT_AS_FIRST_DIRECTIVE_STDIO_H@
+NEXT_AS_FIRST_DIRECTIVE_STDLIB_H = @NEXT_AS_FIRST_DIRECTIVE_STDLIB_H@
+NEXT_AS_FIRST_DIRECTIVE_STRING_H = @NEXT_AS_FIRST_DIRECTIVE_STRING_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H@
+NEXT_AS_FIRST_DIRECTIVE_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_UNISTD_H = @NEXT_AS_FIRST_DIRECTIVE_UNISTD_H@
+NEXT_AS_FIRST_DIRECTIVE_WCHAR_H = @NEXT_AS_FIRST_DIRECTIVE_WCHAR_H@
+NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H@
+NEXT_CTYPE_H = @NEXT_CTYPE_H@
+NEXT_DIRENT_H = @NEXT_DIRENT_H@
+NEXT_ERRNO_H = @NEXT_ERRNO_H@
+NEXT_FCNTL_H = @NEXT_FCNTL_H@
+NEXT_FLOAT_H = @NEXT_FLOAT_H@
+NEXT_FNMATCH_H = @NEXT_FNMATCH_H@
+NEXT_GETOPT_H = @NEXT_GETOPT_H@
+NEXT_ICONV_H = @NEXT_ICONV_H@
+NEXT_INTTYPES_H = @NEXT_INTTYPES_H@
+NEXT_LANGINFO_H = @NEXT_LANGINFO_H@
+NEXT_LIMITS_H = @NEXT_LIMITS_H@
+NEXT_LOCALE_H = @NEXT_LOCALE_H@
+NEXT_NETINET_IN_H = @NEXT_NETINET_IN_H@
+NEXT_PTHREAD_H = @NEXT_PTHREAD_H@
+NEXT_SCHED_H = @NEXT_SCHED_H@
+NEXT_SIGNAL_H = @NEXT_SIGNAL_H@
+NEXT_STDARG_H = @NEXT_STDARG_H@
+NEXT_STDDEF_H = @NEXT_STDDEF_H@
+NEXT_STDINT_H = @NEXT_STDINT_H@
+NEXT_STDIO_H = @NEXT_STDIO_H@
+NEXT_STDLIB_H = @NEXT_STDLIB_H@
+NEXT_STRING_H = @NEXT_STRING_H@
+NEXT_SYS_IOCTL_H = @NEXT_SYS_IOCTL_H@
+NEXT_SYS_SELECT_H = @NEXT_SYS_SELECT_H@
+NEXT_SYS_SOCKET_H = @NEXT_SYS_SOCKET_H@
+NEXT_SYS_STAT_H = @NEXT_SYS_STAT_H@
+NEXT_SYS_TIME_H = @NEXT_SYS_TIME_H@
+NEXT_SYS_TYPES_H = @NEXT_SYS_TYPES_H@
+NEXT_SYS_UIO_H = @NEXT_SYS_UIO_H@
+NEXT_TIME_H = @NEXT_TIME_H@
+NEXT_UNISTD_H = @NEXT_UNISTD_H@
+NEXT_WCHAR_H = @NEXT_WCHAR_H@
+NEXT_WCTYPE_H = @NEXT_WCTYPE_H@
+OBJEXT = @OBJEXT@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PCRE_CFLAGS = @PCRE_CFLAGS@
+PCRE_LIBS = @PCRE_LIBS@
+PERL = @PERL@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+POSUB = @POSUB@
+PRAGMA_COLUMNS = @PRAGMA_COLUMNS@
+PRAGMA_SYSTEM_HEADER = @PRAGMA_SYSTEM_HEADER@
+PRIPTR_PREFIX = @PRIPTR_PREFIX@
+PTHREAD_H_DEFINES_STRUCT_TIMESPEC = @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
+PTRDIFF_T_SUFFIX = @PTRDIFF_T_SUFFIX@
+RANLIB = @RANLIB@
+REPLACE_ACCESS = @REPLACE_ACCESS@
+REPLACE_ALIGNED_ALLOC = @REPLACE_ALIGNED_ALLOC@
+REPLACE_BTOWC = @REPLACE_BTOWC@
+REPLACE_CALLOC = @REPLACE_CALLOC@
+REPLACE_CANONICALIZE_FILE_NAME = @REPLACE_CANONICALIZE_FILE_NAME@
+REPLACE_CHOWN = @REPLACE_CHOWN@
+REPLACE_CLOSE = @REPLACE_CLOSE@
+REPLACE_CLOSEDIR = @REPLACE_CLOSEDIR@
+REPLACE_CREAT = @REPLACE_CREAT@
+REPLACE_CTIME = @REPLACE_CTIME@
+REPLACE_DIRFD = @REPLACE_DIRFD@
+REPLACE_DPRINTF = @REPLACE_DPRINTF@
+REPLACE_DUP = @REPLACE_DUP@
+REPLACE_DUP2 = @REPLACE_DUP2@
+REPLACE_DUPLOCALE = @REPLACE_DUPLOCALE@
+REPLACE_EXECL = @REPLACE_EXECL@
+REPLACE_EXECLE = @REPLACE_EXECLE@
+REPLACE_EXECLP = @REPLACE_EXECLP@
+REPLACE_EXECV = @REPLACE_EXECV@
+REPLACE_EXECVE = @REPLACE_EXECVE@
+REPLACE_EXECVP = @REPLACE_EXECVP@
+REPLACE_EXECVPE = @REPLACE_EXECVPE@
+REPLACE_FACCESSAT = @REPLACE_FACCESSAT@
+REPLACE_FCHMODAT = @REPLACE_FCHMODAT@
+REPLACE_FCHOWNAT = @REPLACE_FCHOWNAT@
+REPLACE_FCLOSE = @REPLACE_FCLOSE@
+REPLACE_FCNTL = @REPLACE_FCNTL@
+REPLACE_FDOPEN = @REPLACE_FDOPEN@
+REPLACE_FDOPENDIR = @REPLACE_FDOPENDIR@
+REPLACE_FFLUSH = @REPLACE_FFLUSH@
+REPLACE_FFSLL = @REPLACE_FFSLL@
+REPLACE_FNMATCH = @REPLACE_FNMATCH@
+REPLACE_FOPEN = @REPLACE_FOPEN@
+REPLACE_FPRINTF = @REPLACE_FPRINTF@
+REPLACE_FPURGE = @REPLACE_FPURGE@
+REPLACE_FREE = @REPLACE_FREE@
+REPLACE_FREELOCALE = @REPLACE_FREELOCALE@
+REPLACE_FREOPEN = @REPLACE_FREOPEN@
+REPLACE_FSEEK = @REPLACE_FSEEK@
+REPLACE_FSEEKO = @REPLACE_FSEEKO@
+REPLACE_FSTAT = @REPLACE_FSTAT@
+REPLACE_FSTATAT = @REPLACE_FSTATAT@
+REPLACE_FTELL = @REPLACE_FTELL@
+REPLACE_FTELLO = @REPLACE_FTELLO@
+REPLACE_FTRUNCATE = @REPLACE_FTRUNCATE@
+REPLACE_FUTIMENS = @REPLACE_FUTIMENS@
+REPLACE_GETCWD = @REPLACE_GETCWD@
+REPLACE_GETDELIM = @REPLACE_GETDELIM@
+REPLACE_GETDOMAINNAME = @REPLACE_GETDOMAINNAME@
+REPLACE_GETDTABLESIZE = @REPLACE_GETDTABLESIZE@
+REPLACE_GETGROUPS = @REPLACE_GETGROUPS@
+REPLACE_GETLINE = @REPLACE_GETLINE@
+REPLACE_GETLOGIN_R = @REPLACE_GETLOGIN_R@
+REPLACE_GETPAGESIZE = @REPLACE_GETPAGESIZE@
+REPLACE_GETPASS = @REPLACE_GETPASS@
+REPLACE_GETTIMEOFDAY = @REPLACE_GETTIMEOFDAY@
+REPLACE_GMTIME = @REPLACE_GMTIME@
+REPLACE_ICONV = @REPLACE_ICONV@
+REPLACE_ICONV_OPEN = @REPLACE_ICONV_OPEN@
+REPLACE_ICONV_UTF = @REPLACE_ICONV_UTF@
+REPLACE_INET_NTOP = @REPLACE_INET_NTOP@
+REPLACE_INET_PTON = @REPLACE_INET_PTON@
+REPLACE_INITSTATE = @REPLACE_INITSTATE@
+REPLACE_IOCTL = @REPLACE_IOCTL@
+REPLACE_ISATTY = @REPLACE_ISATTY@
+REPLACE_ISWBLANK = @REPLACE_ISWBLANK@
+REPLACE_ISWCNTRL = @REPLACE_ISWCNTRL@
+REPLACE_ISWDIGIT = @REPLACE_ISWDIGIT@
+REPLACE_ISWXDIGIT = @REPLACE_ISWXDIGIT@
+REPLACE_ITOLD = @REPLACE_ITOLD@
+REPLACE_LCHOWN = @REPLACE_LCHOWN@
+REPLACE_LINK = @REPLACE_LINK@
+REPLACE_LINKAT = @REPLACE_LINKAT@
+REPLACE_LOCALECONV = @REPLACE_LOCALECONV@
+REPLACE_LOCALTIME = @REPLACE_LOCALTIME@
+REPLACE_LOCALTIME_R = @REPLACE_LOCALTIME_R@
+REPLACE_LSEEK = @REPLACE_LSEEK@
+REPLACE_LSTAT = @REPLACE_LSTAT@
+REPLACE_MALLOC = @REPLACE_MALLOC@
+REPLACE_MBRLEN = @REPLACE_MBRLEN@
+REPLACE_MBRTOWC = @REPLACE_MBRTOWC@
+REPLACE_MBSINIT = @REPLACE_MBSINIT@
+REPLACE_MBSNRTOWCS = @REPLACE_MBSNRTOWCS@
+REPLACE_MBSRTOWCS = @REPLACE_MBSRTOWCS@
+REPLACE_MBSTATE_T = @REPLACE_MBSTATE_T@
+REPLACE_MBTOWC = @REPLACE_MBTOWC@
+REPLACE_MEMCHR = @REPLACE_MEMCHR@
+REPLACE_MEMMEM = @REPLACE_MEMMEM@
+REPLACE_MKDIR = @REPLACE_MKDIR@
+REPLACE_MKFIFO = @REPLACE_MKFIFO@
+REPLACE_MKFIFOAT = @REPLACE_MKFIFOAT@
+REPLACE_MKNOD = @REPLACE_MKNOD@
+REPLACE_MKNODAT = @REPLACE_MKNODAT@
+REPLACE_MKSTEMP = @REPLACE_MKSTEMP@
+REPLACE_MKTIME = @REPLACE_MKTIME@
+REPLACE_NANOSLEEP = @REPLACE_NANOSLEEP@
+REPLACE_NEWLOCALE = @REPLACE_NEWLOCALE@
+REPLACE_NL_LANGINFO = @REPLACE_NL_LANGINFO@
+REPLACE_NULL = @REPLACE_NULL@
+REPLACE_OBSTACK_PRINTF = @REPLACE_OBSTACK_PRINTF@
+REPLACE_OPEN = @REPLACE_OPEN@
+REPLACE_OPENAT = @REPLACE_OPENAT@
+REPLACE_OPENDIR = @REPLACE_OPENDIR@
+REPLACE_PERROR = @REPLACE_PERROR@
+REPLACE_POPEN = @REPLACE_POPEN@
+REPLACE_POSIX_MEMALIGN = @REPLACE_POSIX_MEMALIGN@
+REPLACE_PREAD = @REPLACE_PREAD@
+REPLACE_PRINTF = @REPLACE_PRINTF@
+REPLACE_PSELECT = @REPLACE_PSELECT@
+REPLACE_PTHREAD_ATTR_DESTROY = @REPLACE_PTHREAD_ATTR_DESTROY@
+REPLACE_PTHREAD_ATTR_GETDETACHSTATE = @REPLACE_PTHREAD_ATTR_GETDETACHSTATE@
+REPLACE_PTHREAD_ATTR_INIT = @REPLACE_PTHREAD_ATTR_INIT@
+REPLACE_PTHREAD_ATTR_SETDETACHSTATE = @REPLACE_PTHREAD_ATTR_SETDETACHSTATE@
+REPLACE_PTHREAD_CONDATTR_DESTROY = @REPLACE_PTHREAD_CONDATTR_DESTROY@
+REPLACE_PTHREAD_CONDATTR_INIT = @REPLACE_PTHREAD_CONDATTR_INIT@
+REPLACE_PTHREAD_COND_BROADCAST = @REPLACE_PTHREAD_COND_BROADCAST@
+REPLACE_PTHREAD_COND_DESTROY = @REPLACE_PTHREAD_COND_DESTROY@
+REPLACE_PTHREAD_COND_INIT = @REPLACE_PTHREAD_COND_INIT@
+REPLACE_PTHREAD_COND_SIGNAL = @REPLACE_PTHREAD_COND_SIGNAL@
+REPLACE_PTHREAD_COND_TIMEDWAIT = @REPLACE_PTHREAD_COND_TIMEDWAIT@
+REPLACE_PTHREAD_COND_WAIT = @REPLACE_PTHREAD_COND_WAIT@
+REPLACE_PTHREAD_CREATE = @REPLACE_PTHREAD_CREATE@
+REPLACE_PTHREAD_DETACH = @REPLACE_PTHREAD_DETACH@
+REPLACE_PTHREAD_EQUAL = @REPLACE_PTHREAD_EQUAL@
+REPLACE_PTHREAD_EXIT = @REPLACE_PTHREAD_EXIT@
+REPLACE_PTHREAD_GETSPECIFIC = @REPLACE_PTHREAD_GETSPECIFIC@
+REPLACE_PTHREAD_JOIN = @REPLACE_PTHREAD_JOIN@
+REPLACE_PTHREAD_KEY_CREATE = @REPLACE_PTHREAD_KEY_CREATE@
+REPLACE_PTHREAD_KEY_DELETE = @REPLACE_PTHREAD_KEY_DELETE@
+REPLACE_PTHREAD_MUTEXATTR_DESTROY = @REPLACE_PTHREAD_MUTEXATTR_DESTROY@
+REPLACE_PTHREAD_MUTEXATTR_GETROBUST = @REPLACE_PTHREAD_MUTEXATTR_GETROBUST@
+REPLACE_PTHREAD_MUTEXATTR_GETTYPE = @REPLACE_PTHREAD_MUTEXATTR_GETTYPE@
+REPLACE_PTHREAD_MUTEXATTR_INIT = @REPLACE_PTHREAD_MUTEXATTR_INIT@
+REPLACE_PTHREAD_MUTEXATTR_SETROBUST = @REPLACE_PTHREAD_MUTEXATTR_SETROBUST@
+REPLACE_PTHREAD_MUTEXATTR_SETTYPE = @REPLACE_PTHREAD_MUTEXATTR_SETTYPE@
+REPLACE_PTHREAD_MUTEX_DESTROY = @REPLACE_PTHREAD_MUTEX_DESTROY@
+REPLACE_PTHREAD_MUTEX_INIT = @REPLACE_PTHREAD_MUTEX_INIT@
+REPLACE_PTHREAD_MUTEX_LOCK = @REPLACE_PTHREAD_MUTEX_LOCK@
+REPLACE_PTHREAD_MUTEX_TIMEDLOCK = @REPLACE_PTHREAD_MUTEX_TIMEDLOCK@
+REPLACE_PTHREAD_MUTEX_TRYLOCK = @REPLACE_PTHREAD_MUTEX_TRYLOCK@
+REPLACE_PTHREAD_MUTEX_UNLOCK = @REPLACE_PTHREAD_MUTEX_UNLOCK@
+REPLACE_PTHREAD_ONCE = @REPLACE_PTHREAD_ONCE@
+REPLACE_PTHREAD_RWLOCKATTR_DESTROY = @REPLACE_PTHREAD_RWLOCKATTR_DESTROY@
+REPLACE_PTHREAD_RWLOCKATTR_INIT = @REPLACE_PTHREAD_RWLOCKATTR_INIT@
+REPLACE_PTHREAD_RWLOCK_DESTROY = @REPLACE_PTHREAD_RWLOCK_DESTROY@
+REPLACE_PTHREAD_RWLOCK_INIT = @REPLACE_PTHREAD_RWLOCK_INIT@
+REPLACE_PTHREAD_RWLOCK_RDLOCK = @REPLACE_PTHREAD_RWLOCK_RDLOCK@
+REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK = @REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK = @REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+REPLACE_PTHREAD_RWLOCK_TRYRDLOCK = @REPLACE_PTHREAD_RWLOCK_TRYRDLOCK@
+REPLACE_PTHREAD_RWLOCK_TRYWRLOCK = @REPLACE_PTHREAD_RWLOCK_TRYWRLOCK@
+REPLACE_PTHREAD_RWLOCK_UNLOCK = @REPLACE_PTHREAD_RWLOCK_UNLOCK@
+REPLACE_PTHREAD_RWLOCK_WRLOCK = @REPLACE_PTHREAD_RWLOCK_WRLOCK@
+REPLACE_PTHREAD_SELF = @REPLACE_PTHREAD_SELF@
+REPLACE_PTHREAD_SETSPECIFIC = @REPLACE_PTHREAD_SETSPECIFIC@
+REPLACE_PTHREAD_SIGMASK = @REPLACE_PTHREAD_SIGMASK@
+REPLACE_PTHREAD_SPIN_DESTROY = @REPLACE_PTHREAD_SPIN_DESTROY@
+REPLACE_PTHREAD_SPIN_INIT = @REPLACE_PTHREAD_SPIN_INIT@
+REPLACE_PTHREAD_SPIN_LOCK = @REPLACE_PTHREAD_SPIN_LOCK@
+REPLACE_PTHREAD_SPIN_TRYLOCK = @REPLACE_PTHREAD_SPIN_TRYLOCK@
+REPLACE_PTHREAD_SPIN_UNLOCK = @REPLACE_PTHREAD_SPIN_UNLOCK@
+REPLACE_PTSNAME = @REPLACE_PTSNAME@
+REPLACE_PTSNAME_R = @REPLACE_PTSNAME_R@
+REPLACE_PUTENV = @REPLACE_PUTENV@
+REPLACE_PWRITE = @REPLACE_PWRITE@
+REPLACE_QSORT_R = @REPLACE_QSORT_R@
+REPLACE_RAISE = @REPLACE_RAISE@
+REPLACE_RANDOM = @REPLACE_RANDOM@
+REPLACE_RANDOM_R = @REPLACE_RANDOM_R@
+REPLACE_READ = @REPLACE_READ@
+REPLACE_READLINK = @REPLACE_READLINK@
+REPLACE_READLINKAT = @REPLACE_READLINKAT@
+REPLACE_REALLOC = @REPLACE_REALLOC@
+REPLACE_REALLOCARRAY = @REPLACE_REALLOCARRAY@
+REPLACE_REALPATH = @REPLACE_REALPATH@
+REPLACE_REMOVE = @REPLACE_REMOVE@
+REPLACE_RENAME = @REPLACE_RENAME@
+REPLACE_RENAMEAT = @REPLACE_RENAMEAT@
+REPLACE_RMDIR = @REPLACE_RMDIR@
+REPLACE_SCHED_YIELD = @REPLACE_SCHED_YIELD@
+REPLACE_SELECT = @REPLACE_SELECT@
+REPLACE_SETENV = @REPLACE_SETENV@
+REPLACE_SETLOCALE = @REPLACE_SETLOCALE@
+REPLACE_SETSTATE = @REPLACE_SETSTATE@
+REPLACE_SLEEP = @REPLACE_SLEEP@
+REPLACE_SNPRINTF = @REPLACE_SNPRINTF@
+REPLACE_SPRINTF = @REPLACE_SPRINTF@
+REPLACE_STAT = @REPLACE_STAT@
+REPLACE_STDIO_READ_FUNCS = @REPLACE_STDIO_READ_FUNCS@
+REPLACE_STDIO_WRITE_FUNCS = @REPLACE_STDIO_WRITE_FUNCS@
+REPLACE_STPNCPY = @REPLACE_STPNCPY@
+REPLACE_STRCASESTR = @REPLACE_STRCASESTR@
+REPLACE_STRCHRNUL = @REPLACE_STRCHRNUL@
+REPLACE_STRDUP = @REPLACE_STRDUP@
+REPLACE_STRERROR = @REPLACE_STRERROR@
+REPLACE_STRERRORNAME_NP = @REPLACE_STRERRORNAME_NP@
+REPLACE_STRERROR_R = @REPLACE_STRERROR_R@
+REPLACE_STRFTIME = @REPLACE_STRFTIME@
+REPLACE_STRNCAT = @REPLACE_STRNCAT@
+REPLACE_STRNDUP = @REPLACE_STRNDUP@
+REPLACE_STRNLEN = @REPLACE_STRNLEN@
+REPLACE_STRSIGNAL = @REPLACE_STRSIGNAL@
+REPLACE_STRSTR = @REPLACE_STRSTR@
+REPLACE_STRTOD = @REPLACE_STRTOD@
+REPLACE_STRTOIMAX = @REPLACE_STRTOIMAX@
+REPLACE_STRTOK_R = @REPLACE_STRTOK_R@
+REPLACE_STRTOL = @REPLACE_STRTOL@
+REPLACE_STRTOLD = @REPLACE_STRTOLD@
+REPLACE_STRTOLL = @REPLACE_STRTOLL@
+REPLACE_STRTOUL = @REPLACE_STRTOUL@
+REPLACE_STRTOULL = @REPLACE_STRTOULL@
+REPLACE_STRTOUMAX = @REPLACE_STRTOUMAX@
+REPLACE_STRUCT_LCONV = @REPLACE_STRUCT_LCONV@
+REPLACE_STRUCT_TIMEVAL = @REPLACE_STRUCT_TIMEVAL@
+REPLACE_SYMLINK = @REPLACE_SYMLINK@
+REPLACE_SYMLINKAT = @REPLACE_SYMLINKAT@
+REPLACE_TIMEGM = @REPLACE_TIMEGM@
+REPLACE_TMPFILE = @REPLACE_TMPFILE@
+REPLACE_TOWLOWER = @REPLACE_TOWLOWER@
+REPLACE_TRUNCATE = @REPLACE_TRUNCATE@
+REPLACE_TTYNAME_R = @REPLACE_TTYNAME_R@
+REPLACE_TZSET = @REPLACE_TZSET@
+REPLACE_UNLINK = @REPLACE_UNLINK@
+REPLACE_UNLINKAT = @REPLACE_UNLINKAT@
+REPLACE_UNSETENV = @REPLACE_UNSETENV@
+REPLACE_USLEEP = @REPLACE_USLEEP@
+REPLACE_UTIMENSAT = @REPLACE_UTIMENSAT@
+REPLACE_VASPRINTF = @REPLACE_VASPRINTF@
+REPLACE_VDPRINTF = @REPLACE_VDPRINTF@
+REPLACE_VFPRINTF = @REPLACE_VFPRINTF@
+REPLACE_VPRINTF = @REPLACE_VPRINTF@
+REPLACE_VSNPRINTF = @REPLACE_VSNPRINTF@
+REPLACE_VSPRINTF = @REPLACE_VSPRINTF@
+REPLACE_WCRTOMB = @REPLACE_WCRTOMB@
+REPLACE_WCSFTIME = @REPLACE_WCSFTIME@
+REPLACE_WCSNRTOMBS = @REPLACE_WCSNRTOMBS@
+REPLACE_WCSRTOMBS = @REPLACE_WCSRTOMBS@
+REPLACE_WCSTOK = @REPLACE_WCSTOK@
+REPLACE_WCSWIDTH = @REPLACE_WCSWIDTH@
+REPLACE_WCTOB = @REPLACE_WCTOB@
+REPLACE_WCTOMB = @REPLACE_WCTOMB@
+REPLACE_WCWIDTH = @REPLACE_WCWIDTH@
+REPLACE_WRITE = @REPLACE_WRITE@
+SED = @SED@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+SIGSEGV_H = @SIGSEGV_H@
+SIG_ATOMIC_T_SUFFIX = @SIG_ATOMIC_T_SUFFIX@
+SIZE_T_SUFFIX = @SIZE_T_SUFFIX@
+STDALIGN_H = @STDALIGN_H@
+STDARG_H = @STDARG_H@
+STDBOOL_H = @STDBOOL_H@
+STDDEF_H = @STDDEF_H@
+STDINT_H = @STDINT_H@
+STRIP = @STRIP@
+SYS_IOCTL_H_HAVE_WINSOCK2_H = @SYS_IOCTL_H_HAVE_WINSOCK2_H@
+SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS = @SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+SYS_TIME_H_DEFINES_STRUCT_TIMESPEC = @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
+TIME_H_DEFINES_STRUCT_TIMESPEC = @TIME_H_DEFINES_STRUCT_TIMESPEC@
+TIME_H_DEFINES_TIME_UTC = @TIME_H_DEFINES_TIME_UTC@
+UINT32_MAX_LT_UINTMAX_MAX = @UINT32_MAX_LT_UINTMAX_MAX@
+UINT64_MAX_EQ_ULONG_MAX = @UINT64_MAX_EQ_ULONG_MAX@
+UNDEFINE_STRTOK_R = @UNDEFINE_STRTOK_R@
+UNISTD_H_DEFINES_STRUCT_TIMESPEC = @UNISTD_H_DEFINES_STRUCT_TIMESPEC@
+UNISTD_H_HAVE_SYS_RANDOM_H = @UNISTD_H_HAVE_SYS_RANDOM_H@
+UNISTD_H_HAVE_WINSOCK2_H = @UNISTD_H_HAVE_WINSOCK2_H@
+UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS = @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+USE_NLS = @USE_NLS@
+VERSION = @VERSION@
+WARN_CFLAGS = @WARN_CFLAGS@
+WCHAR_T_SUFFIX = @WCHAR_T_SUFFIX@
+WERROR_CFLAGS = @WERROR_CFLAGS@
+WINDOWS_64_BIT_OFF_T = @WINDOWS_64_BIT_OFF_T@
+WINDOWS_64_BIT_ST_SIZE = @WINDOWS_64_BIT_ST_SIZE@
+WINDOWS_STAT_INODES = @WINDOWS_STAT_INODES@
+WINDOWS_STAT_TIMESPEC = @WINDOWS_STAT_TIMESPEC@
+WINT_T_SUFFIX = @WINT_T_SUFFIX@
+XGETTEXT = @XGETTEXT@
+XGETTEXT_015 = @XGETTEXT_015@
+XGETTEXT_EXTRA_OPTIONS = @XGETTEXT_EXTRA_OPTIONS@
+abs_aux_dir = @abs_aux_dir@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
+ac_ct_CC = @ac_ct_CC@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+builddir = @builddir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+gl_LIBOBJS = @gl_LIBOBJS@
+gl_LTLIBOBJS = @gl_LTLIBOBJS@
+gltests_LIBOBJS = @gltests_LIBOBJS@
+gltests_LTLIBOBJS = @gltests_LTLIBOBJS@
+gltests_WITNESS = @gltests_WITNESS@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libdir = @libdir@
+libexecdir = @libexecdir@
+lispdir = @lispdir@
+localedir = @localedir@
+localstatedir = @localstatedir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+runstatedir = @runstatedir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+AM_CFLAGS = $(GNULIB_TEST_WARN_CFLAGS) $(WERROR_CFLAGS)
+AUTOMAKE_OPTIONS = 1.11 foreign subdir-objects
+SUBDIRS = .
+TESTS_ENVIRONMENT = EXEEXT='@EXEEXT@' srcdir='$(srcdir)' \
+	LOCALE_FR='@LOCALE_FR@' LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+	LIBSIGSEGV='@LIBSIGSEGV@' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_TR_UTF8='@LOCALE_TR_UTF8@' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_JA='@LOCALE_JA@' \
+	LOCALE_ZH_CN='@LOCALE_ZH_CN@' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_JA='@LOCALE_JA@' \
+	LOCALE_ZH_CN='@LOCALE_ZH_CN@' \
+	LOCALE_TR_UTF8='@LOCALE_TR_UTF8@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_JA='@LOCALE_JA@' \
+	LOCALE_ZH_CN='@LOCALE_ZH_CN@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+	LOCALE_ZH_CN='@LOCALE_ZH_CN@' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_JA='@LOCALE_JA@' \
+	LOCALE_ZH_CN='@LOCALE_ZH_CN@' abs_aux_dir='$(abs_aux_dir)' \
+	MAKE='$(MAKE)' LOCALE_FR='@LOCALE_FR@' \
+	LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_JA='@LOCALE_JA@' \
+	LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+noinst_HEADERS = 
+noinst_LIBRARIES = 
+check_LIBRARIES = libtests.a
+EXTRA_DIST = accept.c w32sock.h test-accept.c signature.h macros.h \
+	test-alignof.c test-alloca-opt.c test-argmatch.c macros.h \
+	arpa_inet.in.h test-arpa_inet.c test-binary-io.sh \
+	test-binary-io.c macros.h bind.c w32sock.h test-bind.c \
+	signature.h macros.h test-bitrotate.c macros.h test-btowc1.sh \
+	test-btowc2.sh test-btowc.c signature.h macros.h \
+	test-c-ctype.c macros.h test-c-stack.c test-c-stack.sh \
+	test-c-stack2.sh macros.h test-c-strcase.sh \
+	test-c-strcasecmp.c test-c-strncasecmp.c macros.h \
+	test-calloc-gnu.c macros.h test-chdir.c signature.h macros.h \
+	test-cloexec.c macros.h test-close.c signature.h macros.h \
+	connect.c w32sock.h test-connect.c signature.h macros.h \
+	test-ctype.c test-dfa-match.sh test-dfa-match-aux.c \
+	test-dfa-invalid-char-class.sh test-dfa-invalid-merge.sh \
+	test-dirent.c test-dup.c signature.h macros.h test-dup2.c \
+	signature.h macros.h test-dynarray.c macros.h test-environ.c \
+	test-errno.c test-exclude.c test-exclude1.sh test-exclude2.sh \
+	test-exclude3.sh test-exclude4.sh test-exclude5.sh \
+	test-exclude6.sh test-exclude7.sh test-exclude8.sh \
+	test-fchdir.c signature.h macros.h test-fcntl-h.c test-open.h \
+	test-fcntl-safer.c macros.h test-fcntl.c signature.h macros.h \
+	fdopen.c test-fdopen.c signature.h macros.h test-fdopendir.c \
+	signature.h macros.h test-fgetc.c signature.h macros.h float.c \
+	float.in.h itold.c test-float.c macros.h test-fnmatch-h.c \
+	test-fnmatch.c signature.h macros.h test-fopen-gnu.c macros.h \
+	test-fopen.h test-fopen.c signature.h macros.h test-fpending.c \
+	test-fpending.sh macros.h fpucw.h test-fputc.c signature.h \
+	macros.h test-fread.c signature.h macros.h test-free.c \
+	macros.h test-fstat.c signature.h macros.h test-fstatat.c \
+	test-lstat.h test-stat.h signature.h macros.h ftruncate.c \
+	test-ftruncate.c test-ftruncate.sh signature.h macros.h \
+	test-fwrite.c signature.h macros.h test-getcwd-lgpl.c \
+	signature.h macros.h test-getdtablesize.c signature.h macros.h \
+	macros.h signature.h test-getopt-gnu.c test-getopt-main.h \
+	test-getopt.h test-getopt_long.h macros.h signature.h \
+	test-getopt-posix.c test-getopt-main.h test-getopt.h \
+	test-getprogname.c gettimeofday.c signature.h \
+	test-gettimeofday.c test-hard-locale.c locale.c test-hash.c \
+	macros.h test-i-ring.c macros.h test-iconv-h.c test-iconv.c \
+	signature.h macros.h test-ignore-value.c inet_pton.c \
+	test-inet_pton.c signature.h macros.h test-intprops.c macros.h \
+	anytostr.c inttostr.h macros.h test-inttostr.c test-inttypes.c \
+	ioctl.c w32sock.h test-ioctl.c signature.h macros.h \
+	test-isatty.c signature.h macros.h test-isblank.c signature.h \
+	macros.h test-iswblank.c macros.h test-iswdigit.sh \
+	test-iswdigit.c signature.h macros.h test-iswxdigit.sh \
+	test-iswxdigit.c signature.h macros.h test-langinfo.c \
+	test-limits-h.c listen.c w32sock.h test-listen.c signature.h \
+	macros.h test-localcharset.c test-locale.c test-localeconv.c \
+	signature.h macros.h localename-table.h localename.h \
+	test-localename.c macros.h test-lseek.c test-lseek.sh \
+	signature.h macros.h test-lstat.h test-lstat.c signature.h \
+	macros.h test-malloc-gnu.c macros.h test-malloca.c \
+	test-mbscasecmp.sh test-mbscasecmp.c macros.h test-mbsinit.sh \
+	test-mbsinit.c signature.h macros.h test-mbsrtowcs1.sh \
+	test-mbsrtowcs2.sh test-mbsrtowcs3.sh test-mbsrtowcs4.sh \
+	test-mbsrtowcs.c signature.h macros.h test-mbsstr1.c \
+	test-mbsstr2.sh test-mbsstr2.c test-mbsstr3.sh test-mbsstr3.c \
+	macros.h test-memchr.c zerosize-ptr.h signature.h macros.h \
+	test-memchr2.c zerosize-ptr.h macros.h test-memrchr.c \
+	zerosize-ptr.h signature.h macros.h nanosleep.c \
+	test-nanosleep.c signature.h macros.h netinet_in.in.h \
+	test-netinet_in.c test-nl_langinfo.sh test-nl_langinfo.c \
+	test-nl_langinfo-mt.c signature.h macros.h test-open.h \
+	test-open.c signature.h macros.h test-openat-safer.c macros.h \
+	test-openat.c test-open.h signature.h macros.h test-pathmax.c \
+	perror.c macros.h signature.h test-perror.c test-perror2.c \
+	test-perror.sh test-pipe.c signature.h macros.h pthread.in.h \
+	test-pthread.c pthread-thread.c test-pthread-thread.c macros.h \
+	pthread_sigmask.c test-pthread_sigmask1.c \
+	test-pthread_sigmask2.c signature.h macros.h putenv.c \
+	test-quotearg-simple.c test-quotearg.h macros.h zerosize-ptr.h \
+	test-raise.c signature.h macros.h test-rawmemchr.c \
+	zerosize-ptr.h signature.h macros.h test-read.c signature.h \
+	macros.h test-realloc-gnu.c macros.h test-reallocarray.c \
+	signature.h macros.h test-regex.c macros.h sched.in.h \
+	test-sched.c select.c macros.h signature.h test-select.c \
+	test-select.h test-select-fd.c test-select-in.sh \
+	test-select-out.sh test-select-stdin.c setenv.c test-setenv.c \
+	signature.h macros.h setlocale.c test-setlocale_null.c \
+	test-setlocale_null-mt-one.c test-setlocale_null-mt-all.c \
+	test-setlocale1.sh test-setlocale1.c test-setlocale2.sh \
+	test-setlocale2.c signature.h macros.h setsockopt.c w32sock.h \
+	test-setsockopt.c signature.h macros.h sig-handler.h \
+	sigaction.c test-sigaction.c signature.h macros.h \
+	test-signal-h.c sigprocmask.c test-sigprocmask.c signature.h \
+	macros.h test-sigsegv-catch-segv1.c test-sigsegv-catch-segv2.c \
+	test-sigsegv-catch-stackoverflow1.c \
+	test-sigsegv-catch-stackoverflow2.c altstack-util.h \
+	mmap-anon-util.h sleep.c test-sleep.c signature.h macros.h \
+	_Noreturn.h arg-nonnull.h c++defs.h warn-on-use.h snprintf.c \
+	test-snprintf.c signature.h macros.h socket.c w32sock.h \
+	w32sock.h test-sockets.c test-stat.h test-stat.c signature.h \
+	macros.h test-stat-time.c macros.h nap.h test-stdalign.c \
+	macros.h test-stdbool.c test-stddef.c test-stdint.c \
+	test-stdio.c test-stdlib.c test-sys_wait.h test-strerror.c \
+	signature.h macros.h strerror_r.c test-strerror_r.c \
+	signature.h macros.h test-striconv.c macros.h test-string.c \
+	test-strnlen.c zerosize-ptr.h signature.h macros.h \
+	test-strstr.c zerosize-ptr.h signature.h macros.h \
+	test-strtoimax.c signature.h macros.h test-strtoll.c \
+	signature.h macros.h test-strtoull.c signature.h macros.h \
+	test-strtoumax.c signature.h macros.h symlink.c test-symlink.h \
+	test-symlink.c signature.h macros.h sys_ioctl.in.h \
+	test-sys_ioctl.c sys_select.in.h test-sys_select.c signature.h \
+	sys_socket.in.h test-sys_socket.c test-sys_stat.c \
+	sys_time.in.h test-sys_time.c test-sys_types.c sys_uio.in.h \
+	test-sys_uio.c init.sh test-init.sh thread-optim.h \
+	test-thread_self.c test-thread_create.c macros.h test-time.c \
+	test-dup-safer.c macros.h test-unistd.c \
+	unistr/test-u8-mbtoucr.c macros.h unistr/test-u8-uctomb.c \
+	macros.h uniwidth/test-uc_width.c uniwidth/test-uc_width2.c \
+	uniwidth/test-uc_width2.sh macros.h unsetenv.c test-unsetenv.c \
+	signature.h macros.h asnprintf.c float+.h printf-args.c \
+	printf-args.h printf-parse.c printf-parse.h vasnprintf.c \
+	vasnprintf.h test-vasnprintf.c macros.h \
+	test-vc-list-files-git.sh test-vc-list-files-cvs.sh \
+	test-verify.c test-verify-try.c test-verify.sh \
+	test-version-etc.c test-version-etc.sh test-wchar.c \
+	test-wcrtomb.sh test-wcrtomb.c test-wcrtomb-w32-1.sh \
+	test-wcrtomb-w32-2.sh test-wcrtomb-w32-3.sh \
+	test-wcrtomb-w32-4.sh test-wcrtomb-w32-5.sh \
+	test-wcrtomb-w32-6.sh test-wcrtomb-w32-7.sh test-wcrtomb-w32.c \
+	signature.h macros.h test-wctype-h.c macros.h test-wcwidth.c \
+	signature.h macros.h windows-thread.c windows-thread.h \
+	windows-tls.c windows-tls.h test-xalloc-die.c \
+	test-xalloc-die.sh test-xstrtoimax.c test-xstrtoimax.sh \
+	xstrtol-error.h test-xstrtol.c test-xstrtoul.c test-xstrtol.sh
+BUILT_SOURCES = arpa/inet.h $(FLOAT_H) $(NETINET_IN_H) pthread.h \
+	sched.h sys/ioctl.h sys/select.h sys/socket.h sys/time.h \
+	sys/uio.h
+SUFFIXES = 
+
+# This test expects compilation of test-verify-try.c to fail, and
+# each time it fails, the makefile rule does not perform the usual
+#  "mv -f $name.Tpo $name.po, so tell make clean to remove that file.
+MOSTLYCLEANFILES = core *.stackdump arpa/inet.h arpa/inet.h-t \
+	t-c-stack.tmp t-c-stack2.tmp float.h float.h-t test-fpending.t \
+	netinet/in.h netinet/in.h-t pthread.h pthread.h-t sched.h \
+	sched.h-t sys/ioctl.h sys/ioctl.h-t sys/select.h \
+	sys/select.h-t sys/socket.h sys/socket.h-t sys/time.h \
+	sys/time.h-t sys/uio.h sys/uio.h-t .deps/test-verify-try.Tpo
+MOSTLYCLEANDIRS = arpa netinet sys sys sys sys
+CLEANFILES = 
+DISTCLEANFILES = 
+MAINTAINERCLEANFILES = 
+CXXFLAGS = @GL_CXXFLAG_ALLOW_WARNINGS@ @CXXFLAGS@
+AM_CPPFLAGS = \
+  -D@gltests_WITNESS@=1 \
+  -I. -I$(srcdir) \
+  -I.. -I$(srcdir)/.. \
+  -I../lib -I$(srcdir)/../lib
+
+LDADD = libtests.a ../lib/libgreputils.a libtests.a ../lib/libgreputils.a libtests.a $(LIBTESTS_LIBDEPS)
+libtests_a_SOURCES = hash-pjw.h hash-pjw.c imaxtostr.c inttostr.c \
+	offtostr.c uinttostr.c umaxtostr.c localename.c \
+	localename-table.c sig-handler.c size_max.h sockets.h \
+	sockets.c sys_socket.c glthread/thread.h glthread/thread.c \
+	xsize.h xsize.c xstrtol-error.c
+libtests_a_LIBADD = $(gltests_LIBOBJS)
+libtests_a_DEPENDENCIES = $(gltests_LIBOBJS)
+EXTRA_libtests_a_SOURCES = accept.c bind.c connect.c fdopen.c float.c \
+	itold.c ftruncate.c gettimeofday.c inet_pton.c anytostr.c \
+	ioctl.c listen.c nanosleep.c perror.c pthread-thread.c \
+	pthread_sigmask.c putenv.c select.c setenv.c setlocale.c \
+	setsockopt.c sigaction.c sigprocmask.c sleep.c snprintf.c \
+	socket.c strerror_r.c symlink.c unsetenv.c asnprintf.c \
+	printf-args.c printf-parse.c vasnprintf.c windows-thread.c \
+	windows-tls.c
+AM_LIBTOOLFLAGS = --preserve-dup-deps
+test_accept_LDADD = $(LDADD) @LIBSOCKET@
+test_argmatch_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+test_bind_LDADD = $(LDADD) @LIBSOCKET@ $(INET_PTON_LIB)
+test_btowc_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_c_ctype_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_c_stack_LDADD = $(LDADD) $(LIBCSTACK) @LIBINTL@
+test_c_strcasecmp_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_c_strncasecmp_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_connect_LDADD = $(LDADD) @LIBSOCKET@ $(INET_PTON_LIB)
+test_dfa_match_aux_LDADD = $(LDADD) $(LIB_SETLOCALE) @LIBINTL@ $(LIB_MBRTOWC)
+test_exclude_LDADD = $(LDADD) $(LIBUNISTRING) @LIBINTL@ $(LIB_MBRTOWC) $(LIBTHREAD)
+test_fchdir_LDADD = $(LDADD) $(LIBINTL)
+test_fdopendir_LDADD = $(LDADD) @LIBINTL@
+test_fnmatch_LDADD = $(LDADD) $(LIB_MBRTOWC)
+test_fstatat_LDADD = $(LDADD) @LIBINTL@
+test_getcwd_lgpl_LDADD = $(LDADD) $(LIBINTL)
+test_getopt_gnu_LDADD = $(LDADD) $(LIBINTL)
+test_getopt_posix_LDADD = $(LDADD) $(LIBINTL)
+test_getprogname_LDADD = $(LDADD)
+GPERF = gperf
+V_GPERF = $(V_GPERF_@AM_V@)
+V_GPERF_ = $(V_GPERF_@AM_DEFAULT_V@)
+V_GPERF_0 = @echo "  GPERF   " $@;
+test_hard_locale_LDADD = $(LDADD) $(LIB_SETLOCALE) @LIB_HARD_LOCALE@
+current_locale_SOURCES = locale.c
+test_iconv_LDADD = $(LDADD) @LIBICONV@
+test_inet_pton_LDADD = $(LDADD) @INET_PTON_LIB@
+test_iswdigit_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_iswxdigit_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_listen_LDADD = $(LDADD) @LIBSOCKET@
+test_localcharset_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_localename_LDADD = $(LDADD) $(LIB_SETLOCALE) @INTL_MACOSX_LIBS@ $(LIBTHREAD)
+test_mbscasecmp_LDADD = $(LDADD) $(LIBUNISTRING) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_mbsinit_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_mbsrtowcs_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_mbsstr1_LDADD = $(LDADD) $(LIBUNISTRING) $(LIB_MBRTOWC)
+test_mbsstr2_LDADD = $(LDADD) $(LIBUNISTRING) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_mbsstr3_LDADD = $(LDADD) $(LIBUNISTRING) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_nanosleep_LDADD = $(LDADD) $(LIB_NANOSLEEP)
+test_nl_langinfo_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_nl_langinfo_mt_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIBMULTITHREAD) $(LIB_NANOSLEEP)
+test_openat_safer_LDADD = $(LDADD) @LIBINTL@
+test_openat_LDADD = $(LDADD) @LIBINTL@
+test_pthread_thread_LDADD = $(LDADD) @LIBPMULTITHREAD@
+test_pthread_sigmask1_LDADD = $(LDADD) @LIB_PTHREAD_SIGMASK@
+test_pthread_sigmask2_LDADD = $(LDADD) @LIB_PTHREAD_SIGMASK@ @LIBMULTITHREAD@
+test_quotearg_simple_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+test_regex_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC) @LIBINTL@ $(LIBTHREAD)
+test_select_LDADD = $(LDADD) @LIB_SELECT@ @LIBSOCKET@ $(INET_PTON_LIB)
+test_select_fd_LDADD = $(LDADD) @LIB_SELECT@
+test_select_stdin_LDADD = $(LDADD) @LIB_SELECT@
+test_setlocale_null_LDADD = $(LDADD) @LIB_SETLOCALE_NULL@
+test_setlocale_null_mt_one_LDADD = $(LDADD) @LIB_SETLOCALE_NULL@ $(LIBMULTITHREAD) $(LIB_NANOSLEEP)
+test_setlocale_null_mt_all_LDADD = $(LDADD) @LIB_SETLOCALE_NULL@ $(LIBMULTITHREAD) $(LIB_NANOSLEEP)
+test_setlocale1_LDADD = $(LDADD) @LIB_SETLOCALE@
+test_setlocale2_LDADD = $(LDADD) @LIB_SETLOCALE@
+test_setsockopt_LDADD = $(LDADD) @LIBSOCKET@
+test_sigsegv_catch_segv1_LDADD = $(LDADD) $(LIBSIGSEGV)
+test_sigsegv_catch_segv2_LDADD = $(LDADD) $(LIBSIGSEGV)
+test_sigsegv_catch_stackoverflow1_LDADD = $(LDADD) $(LIBSIGSEGV)
+test_sigsegv_catch_stackoverflow2_LDADD = $(LDADD) $(LIBSIGSEGV)
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+_NORETURN_H = $(srcdir)/_Noreturn.h
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+ARG_NONNULL_H = $(srcdir)/arg-nonnull.h
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+CXXDEFS_H = $(srcdir)/c++defs.h
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+WARN_ON_USE_H = $(srcdir)/warn-on-use.h
+test_sockets_LDADD = $(LDADD) @LIBSOCKET@
+test_stat_LDADD = $(LDADD) $(LIBINTL)
+test_stat_time_LDADD = $(LDADD) $(LIB_NANOSLEEP)
+test_striconv_LDADD = $(LDADD) @LIBICONV@
+test_thread_self_LDADD = $(LDADD) @LIBTHREAD@
+test_thread_create_LDADD = $(LDADD) @LIBMULTITHREAD@
+test_u8_mbtoucr_SOURCES = unistr/test-u8-mbtoucr.c
+test_u8_mbtoucr_LDADD = $(LDADD) $(LIBUNISTRING)
+test_u8_uctomb_SOURCES = unistr/test-u8-uctomb.c
+test_u8_uctomb_LDADD = $(LDADD) $(LIBUNISTRING)
+test_uc_width_SOURCES = uniwidth/test-uc_width.c
+test_uc_width_LDADD = $(LDADD) $(LIBUNISTRING)
+test_uc_width2_SOURCES = uniwidth/test-uc_width2.c
+test_uc_width2_LDADD = $(LDADD) $(LIBUNISTRING)
+test_version_etc_LDADD = $(LDADD) @LIBINTL@
+test_wcrtomb_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_wcwidth_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIBUNISTRING)
+test_xalloc_die_LDADD = $(LDADD) @LIBINTL@
+test_xstrtoimax_LDADD = $(LDADD) @LIBINTL@
+test_xstrtol_LDADD = $(LDADD) @LIBINTL@
+test_xstrtoul_LDADD = $(LDADD) @LIBINTL@
+all: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) all-recursive
+
+.SUFFIXES:
+.SUFFIXES: .c .log .o .obj .test .test$(EXEEXT) .trs
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am $(srcdir)/gnulib.mk $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign gnulib-tests/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign gnulib-tests/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
+	esac;
+$(srcdir)/gnulib.mk $(am__empty):
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+clean-checkPROGRAMS:
+	-test -z "$(check_PROGRAMS)" || rm -f $(check_PROGRAMS)
+
+clean-noinstPROGRAMS:
+	-test -z "$(noinst_PROGRAMS)" || rm -f $(noinst_PROGRAMS)
+
+clean-checkLIBRARIES:
+	-test -z "$(check_LIBRARIES)" || rm -f $(check_LIBRARIES)
+
+clean-noinstLIBRARIES:
+	-test -z "$(noinst_LIBRARIES)" || rm -f $(noinst_LIBRARIES)
+glthread/$(am__dirstamp):
+	@$(MKDIR_P) glthread
+	@: > glthread/$(am__dirstamp)
+glthread/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) glthread/$(DEPDIR)
+	@: > glthread/$(DEPDIR)/$(am__dirstamp)
+glthread/thread.$(OBJEXT): glthread/$(am__dirstamp) \
+	glthread/$(DEPDIR)/$(am__dirstamp)
+
+libtests.a: $(libtests_a_OBJECTS) $(libtests_a_DEPENDENCIES) $(EXTRA_libtests_a_DEPENDENCIES) 
+	$(AM_V_at)-rm -f libtests.a
+	$(AM_V_AR)$(libtests_a_AR) libtests.a $(libtests_a_OBJECTS) $(libtests_a_LIBADD)
+	$(AM_V_at)$(RANLIB) libtests.a
+
+current-locale$(EXEEXT): $(current_locale_OBJECTS) $(current_locale_DEPENDENCIES) $(EXTRA_current_locale_DEPENDENCIES) 
+	@rm -f current-locale$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(current_locale_OBJECTS) $(current_locale_LDADD) $(LIBS)
+
+test-accept$(EXEEXT): $(test_accept_OBJECTS) $(test_accept_DEPENDENCIES) $(EXTRA_test_accept_DEPENDENCIES) 
+	@rm -f test-accept$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_accept_OBJECTS) $(test_accept_LDADD) $(LIBS)
+
+test-alignof$(EXEEXT): $(test_alignof_OBJECTS) $(test_alignof_DEPENDENCIES) $(EXTRA_test_alignof_DEPENDENCIES) 
+	@rm -f test-alignof$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_alignof_OBJECTS) $(test_alignof_LDADD) $(LIBS)
+
+test-alloca-opt$(EXEEXT): $(test_alloca_opt_OBJECTS) $(test_alloca_opt_DEPENDENCIES) $(EXTRA_test_alloca_opt_DEPENDENCIES) 
+	@rm -f test-alloca-opt$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_alloca_opt_OBJECTS) $(test_alloca_opt_LDADD) $(LIBS)
+
+test-argmatch$(EXEEXT): $(test_argmatch_OBJECTS) $(test_argmatch_DEPENDENCIES) $(EXTRA_test_argmatch_DEPENDENCIES) 
+	@rm -f test-argmatch$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_argmatch_OBJECTS) $(test_argmatch_LDADD) $(LIBS)
+
+test-arpa_inet$(EXEEXT): $(test_arpa_inet_OBJECTS) $(test_arpa_inet_DEPENDENCIES) $(EXTRA_test_arpa_inet_DEPENDENCIES) 
+	@rm -f test-arpa_inet$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_arpa_inet_OBJECTS) $(test_arpa_inet_LDADD) $(LIBS)
+
+test-binary-io$(EXEEXT): $(test_binary_io_OBJECTS) $(test_binary_io_DEPENDENCIES) $(EXTRA_test_binary_io_DEPENDENCIES) 
+	@rm -f test-binary-io$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_binary_io_OBJECTS) $(test_binary_io_LDADD) $(LIBS)
+
+test-bind$(EXEEXT): $(test_bind_OBJECTS) $(test_bind_DEPENDENCIES) $(EXTRA_test_bind_DEPENDENCIES) 
+	@rm -f test-bind$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_bind_OBJECTS) $(test_bind_LDADD) $(LIBS)
+
+test-bitrotate$(EXEEXT): $(test_bitrotate_OBJECTS) $(test_bitrotate_DEPENDENCIES) $(EXTRA_test_bitrotate_DEPENDENCIES) 
+	@rm -f test-bitrotate$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_bitrotate_OBJECTS) $(test_bitrotate_LDADD) $(LIBS)
+
+test-btowc$(EXEEXT): $(test_btowc_OBJECTS) $(test_btowc_DEPENDENCIES) $(EXTRA_test_btowc_DEPENDENCIES) 
+	@rm -f test-btowc$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_btowc_OBJECTS) $(test_btowc_LDADD) $(LIBS)
+
+test-c-ctype$(EXEEXT): $(test_c_ctype_OBJECTS) $(test_c_ctype_DEPENDENCIES) $(EXTRA_test_c_ctype_DEPENDENCIES) 
+	@rm -f test-c-ctype$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_c_ctype_OBJECTS) $(test_c_ctype_LDADD) $(LIBS)
+
+test-c-stack$(EXEEXT): $(test_c_stack_OBJECTS) $(test_c_stack_DEPENDENCIES) $(EXTRA_test_c_stack_DEPENDENCIES) 
+	@rm -f test-c-stack$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_c_stack_OBJECTS) $(test_c_stack_LDADD) $(LIBS)
+
+test-c-strcasecmp$(EXEEXT): $(test_c_strcasecmp_OBJECTS) $(test_c_strcasecmp_DEPENDENCIES) $(EXTRA_test_c_strcasecmp_DEPENDENCIES) 
+	@rm -f test-c-strcasecmp$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_c_strcasecmp_OBJECTS) $(test_c_strcasecmp_LDADD) $(LIBS)
+
+test-c-strncasecmp$(EXEEXT): $(test_c_strncasecmp_OBJECTS) $(test_c_strncasecmp_DEPENDENCIES) $(EXTRA_test_c_strncasecmp_DEPENDENCIES) 
+	@rm -f test-c-strncasecmp$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_c_strncasecmp_OBJECTS) $(test_c_strncasecmp_LDADD) $(LIBS)
+
+test-calloc-gnu$(EXEEXT): $(test_calloc_gnu_OBJECTS) $(test_calloc_gnu_DEPENDENCIES) $(EXTRA_test_calloc_gnu_DEPENDENCIES) 
+	@rm -f test-calloc-gnu$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_calloc_gnu_OBJECTS) $(test_calloc_gnu_LDADD) $(LIBS)
+
+test-chdir$(EXEEXT): $(test_chdir_OBJECTS) $(test_chdir_DEPENDENCIES) $(EXTRA_test_chdir_DEPENDENCIES) 
+	@rm -f test-chdir$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_chdir_OBJECTS) $(test_chdir_LDADD) $(LIBS)
+
+test-cloexec$(EXEEXT): $(test_cloexec_OBJECTS) $(test_cloexec_DEPENDENCIES) $(EXTRA_test_cloexec_DEPENDENCIES) 
+	@rm -f test-cloexec$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_cloexec_OBJECTS) $(test_cloexec_LDADD) $(LIBS)
+
+test-close$(EXEEXT): $(test_close_OBJECTS) $(test_close_DEPENDENCIES) $(EXTRA_test_close_DEPENDENCIES) 
+	@rm -f test-close$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_close_OBJECTS) $(test_close_LDADD) $(LIBS)
+
+test-connect$(EXEEXT): $(test_connect_OBJECTS) $(test_connect_DEPENDENCIES) $(EXTRA_test_connect_DEPENDENCIES) 
+	@rm -f test-connect$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_connect_OBJECTS) $(test_connect_LDADD) $(LIBS)
+
+test-ctype$(EXEEXT): $(test_ctype_OBJECTS) $(test_ctype_DEPENDENCIES) $(EXTRA_test_ctype_DEPENDENCIES) 
+	@rm -f test-ctype$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ctype_OBJECTS) $(test_ctype_LDADD) $(LIBS)
+
+test-dfa-match-aux$(EXEEXT): $(test_dfa_match_aux_OBJECTS) $(test_dfa_match_aux_DEPENDENCIES) $(EXTRA_test_dfa_match_aux_DEPENDENCIES) 
+	@rm -f test-dfa-match-aux$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_dfa_match_aux_OBJECTS) $(test_dfa_match_aux_LDADD) $(LIBS)
+
+test-dirent$(EXEEXT): $(test_dirent_OBJECTS) $(test_dirent_DEPENDENCIES) $(EXTRA_test_dirent_DEPENDENCIES) 
+	@rm -f test-dirent$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_dirent_OBJECTS) $(test_dirent_LDADD) $(LIBS)
+
+test-dup$(EXEEXT): $(test_dup_OBJECTS) $(test_dup_DEPENDENCIES) $(EXTRA_test_dup_DEPENDENCIES) 
+	@rm -f test-dup$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_dup_OBJECTS) $(test_dup_LDADD) $(LIBS)
+
+test-dup-safer$(EXEEXT): $(test_dup_safer_OBJECTS) $(test_dup_safer_DEPENDENCIES) $(EXTRA_test_dup_safer_DEPENDENCIES) 
+	@rm -f test-dup-safer$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_dup_safer_OBJECTS) $(test_dup_safer_LDADD) $(LIBS)
+
+test-dup2$(EXEEXT): $(test_dup2_OBJECTS) $(test_dup2_DEPENDENCIES) $(EXTRA_test_dup2_DEPENDENCIES) 
+	@rm -f test-dup2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_dup2_OBJECTS) $(test_dup2_LDADD) $(LIBS)
+
+test-dynarray$(EXEEXT): $(test_dynarray_OBJECTS) $(test_dynarray_DEPENDENCIES) $(EXTRA_test_dynarray_DEPENDENCIES) 
+	@rm -f test-dynarray$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_dynarray_OBJECTS) $(test_dynarray_LDADD) $(LIBS)
+
+test-environ$(EXEEXT): $(test_environ_OBJECTS) $(test_environ_DEPENDENCIES) $(EXTRA_test_environ_DEPENDENCIES) 
+	@rm -f test-environ$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_environ_OBJECTS) $(test_environ_LDADD) $(LIBS)
+
+test-errno$(EXEEXT): $(test_errno_OBJECTS) $(test_errno_DEPENDENCIES) $(EXTRA_test_errno_DEPENDENCIES) 
+	@rm -f test-errno$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_errno_OBJECTS) $(test_errno_LDADD) $(LIBS)
+
+test-exclude$(EXEEXT): $(test_exclude_OBJECTS) $(test_exclude_DEPENDENCIES) $(EXTRA_test_exclude_DEPENDENCIES) 
+	@rm -f test-exclude$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_exclude_OBJECTS) $(test_exclude_LDADD) $(LIBS)
+
+test-fchdir$(EXEEXT): $(test_fchdir_OBJECTS) $(test_fchdir_DEPENDENCIES) $(EXTRA_test_fchdir_DEPENDENCIES) 
+	@rm -f test-fchdir$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fchdir_OBJECTS) $(test_fchdir_LDADD) $(LIBS)
+
+test-fcntl$(EXEEXT): $(test_fcntl_OBJECTS) $(test_fcntl_DEPENDENCIES) $(EXTRA_test_fcntl_DEPENDENCIES) 
+	@rm -f test-fcntl$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fcntl_OBJECTS) $(test_fcntl_LDADD) $(LIBS)
+
+test-fcntl-h$(EXEEXT): $(test_fcntl_h_OBJECTS) $(test_fcntl_h_DEPENDENCIES) $(EXTRA_test_fcntl_h_DEPENDENCIES) 
+	@rm -f test-fcntl-h$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fcntl_h_OBJECTS) $(test_fcntl_h_LDADD) $(LIBS)
+
+test-fcntl-safer$(EXEEXT): $(test_fcntl_safer_OBJECTS) $(test_fcntl_safer_DEPENDENCIES) $(EXTRA_test_fcntl_safer_DEPENDENCIES) 
+	@rm -f test-fcntl-safer$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fcntl_safer_OBJECTS) $(test_fcntl_safer_LDADD) $(LIBS)
+
+test-fdopen$(EXEEXT): $(test_fdopen_OBJECTS) $(test_fdopen_DEPENDENCIES) $(EXTRA_test_fdopen_DEPENDENCIES) 
+	@rm -f test-fdopen$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fdopen_OBJECTS) $(test_fdopen_LDADD) $(LIBS)
+
+test-fdopendir$(EXEEXT): $(test_fdopendir_OBJECTS) $(test_fdopendir_DEPENDENCIES) $(EXTRA_test_fdopendir_DEPENDENCIES) 
+	@rm -f test-fdopendir$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fdopendir_OBJECTS) $(test_fdopendir_LDADD) $(LIBS)
+
+test-fgetc$(EXEEXT): $(test_fgetc_OBJECTS) $(test_fgetc_DEPENDENCIES) $(EXTRA_test_fgetc_DEPENDENCIES) 
+	@rm -f test-fgetc$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fgetc_OBJECTS) $(test_fgetc_LDADD) $(LIBS)
+
+test-float$(EXEEXT): $(test_float_OBJECTS) $(test_float_DEPENDENCIES) $(EXTRA_test_float_DEPENDENCIES) 
+	@rm -f test-float$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_float_OBJECTS) $(test_float_LDADD) $(LIBS)
+
+test-fnmatch$(EXEEXT): $(test_fnmatch_OBJECTS) $(test_fnmatch_DEPENDENCIES) $(EXTRA_test_fnmatch_DEPENDENCIES) 
+	@rm -f test-fnmatch$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fnmatch_OBJECTS) $(test_fnmatch_LDADD) $(LIBS)
+
+test-fnmatch-h$(EXEEXT): $(test_fnmatch_h_OBJECTS) $(test_fnmatch_h_DEPENDENCIES) $(EXTRA_test_fnmatch_h_DEPENDENCIES) 
+	@rm -f test-fnmatch-h$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fnmatch_h_OBJECTS) $(test_fnmatch_h_LDADD) $(LIBS)
+
+test-fopen$(EXEEXT): $(test_fopen_OBJECTS) $(test_fopen_DEPENDENCIES) $(EXTRA_test_fopen_DEPENDENCIES) 
+	@rm -f test-fopen$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fopen_OBJECTS) $(test_fopen_LDADD) $(LIBS)
+
+test-fopen-gnu$(EXEEXT): $(test_fopen_gnu_OBJECTS) $(test_fopen_gnu_DEPENDENCIES) $(EXTRA_test_fopen_gnu_DEPENDENCIES) 
+	@rm -f test-fopen-gnu$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fopen_gnu_OBJECTS) $(test_fopen_gnu_LDADD) $(LIBS)
+
+test-fpending$(EXEEXT): $(test_fpending_OBJECTS) $(test_fpending_DEPENDENCIES) $(EXTRA_test_fpending_DEPENDENCIES) 
+	@rm -f test-fpending$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fpending_OBJECTS) $(test_fpending_LDADD) $(LIBS)
+
+test-fputc$(EXEEXT): $(test_fputc_OBJECTS) $(test_fputc_DEPENDENCIES) $(EXTRA_test_fputc_DEPENDENCIES) 
+	@rm -f test-fputc$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fputc_OBJECTS) $(test_fputc_LDADD) $(LIBS)
+
+test-fread$(EXEEXT): $(test_fread_OBJECTS) $(test_fread_DEPENDENCIES) $(EXTRA_test_fread_DEPENDENCIES) 
+	@rm -f test-fread$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fread_OBJECTS) $(test_fread_LDADD) $(LIBS)
+
+test-free$(EXEEXT): $(test_free_OBJECTS) $(test_free_DEPENDENCIES) $(EXTRA_test_free_DEPENDENCIES) 
+	@rm -f test-free$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_free_OBJECTS) $(test_free_LDADD) $(LIBS)
+
+test-fstat$(EXEEXT): $(test_fstat_OBJECTS) $(test_fstat_DEPENDENCIES) $(EXTRA_test_fstat_DEPENDENCIES) 
+	@rm -f test-fstat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fstat_OBJECTS) $(test_fstat_LDADD) $(LIBS)
+
+test-fstatat$(EXEEXT): $(test_fstatat_OBJECTS) $(test_fstatat_DEPENDENCIES) $(EXTRA_test_fstatat_DEPENDENCIES) 
+	@rm -f test-fstatat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fstatat_OBJECTS) $(test_fstatat_LDADD) $(LIBS)
+
+test-ftruncate$(EXEEXT): $(test_ftruncate_OBJECTS) $(test_ftruncate_DEPENDENCIES) $(EXTRA_test_ftruncate_DEPENDENCIES) 
+	@rm -f test-ftruncate$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ftruncate_OBJECTS) $(test_ftruncate_LDADD) $(LIBS)
+
+test-fwrite$(EXEEXT): $(test_fwrite_OBJECTS) $(test_fwrite_DEPENDENCIES) $(EXTRA_test_fwrite_DEPENDENCIES) 
+	@rm -f test-fwrite$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_fwrite_OBJECTS) $(test_fwrite_LDADD) $(LIBS)
+
+test-getcwd-lgpl$(EXEEXT): $(test_getcwd_lgpl_OBJECTS) $(test_getcwd_lgpl_DEPENDENCIES) $(EXTRA_test_getcwd_lgpl_DEPENDENCIES) 
+	@rm -f test-getcwd-lgpl$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getcwd_lgpl_OBJECTS) $(test_getcwd_lgpl_LDADD) $(LIBS)
+
+test-getdtablesize$(EXEEXT): $(test_getdtablesize_OBJECTS) $(test_getdtablesize_DEPENDENCIES) $(EXTRA_test_getdtablesize_DEPENDENCIES) 
+	@rm -f test-getdtablesize$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getdtablesize_OBJECTS) $(test_getdtablesize_LDADD) $(LIBS)
+
+test-getopt-gnu$(EXEEXT): $(test_getopt_gnu_OBJECTS) $(test_getopt_gnu_DEPENDENCIES) $(EXTRA_test_getopt_gnu_DEPENDENCIES) 
+	@rm -f test-getopt-gnu$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getopt_gnu_OBJECTS) $(test_getopt_gnu_LDADD) $(LIBS)
+
+test-getopt-posix$(EXEEXT): $(test_getopt_posix_OBJECTS) $(test_getopt_posix_DEPENDENCIES) $(EXTRA_test_getopt_posix_DEPENDENCIES) 
+	@rm -f test-getopt-posix$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getopt_posix_OBJECTS) $(test_getopt_posix_LDADD) $(LIBS)
+
+test-getprogname$(EXEEXT): $(test_getprogname_OBJECTS) $(test_getprogname_DEPENDENCIES) $(EXTRA_test_getprogname_DEPENDENCIES) 
+	@rm -f test-getprogname$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_getprogname_OBJECTS) $(test_getprogname_LDADD) $(LIBS)
+
+test-gettimeofday$(EXEEXT): $(test_gettimeofday_OBJECTS) $(test_gettimeofday_DEPENDENCIES) $(EXTRA_test_gettimeofday_DEPENDENCIES) 
+	@rm -f test-gettimeofday$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_gettimeofday_OBJECTS) $(test_gettimeofday_LDADD) $(LIBS)
+
+test-hard-locale$(EXEEXT): $(test_hard_locale_OBJECTS) $(test_hard_locale_DEPENDENCIES) $(EXTRA_test_hard_locale_DEPENDENCIES) 
+	@rm -f test-hard-locale$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_hard_locale_OBJECTS) $(test_hard_locale_LDADD) $(LIBS)
+
+test-hash$(EXEEXT): $(test_hash_OBJECTS) $(test_hash_DEPENDENCIES) $(EXTRA_test_hash_DEPENDENCIES) 
+	@rm -f test-hash$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_hash_OBJECTS) $(test_hash_LDADD) $(LIBS)
+
+test-i-ring$(EXEEXT): $(test_i_ring_OBJECTS) $(test_i_ring_DEPENDENCIES) $(EXTRA_test_i_ring_DEPENDENCIES) 
+	@rm -f test-i-ring$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_i_ring_OBJECTS) $(test_i_ring_LDADD) $(LIBS)
+
+test-iconv$(EXEEXT): $(test_iconv_OBJECTS) $(test_iconv_DEPENDENCIES) $(EXTRA_test_iconv_DEPENDENCIES) 
+	@rm -f test-iconv$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_iconv_OBJECTS) $(test_iconv_LDADD) $(LIBS)
+
+test-iconv-h$(EXEEXT): $(test_iconv_h_OBJECTS) $(test_iconv_h_DEPENDENCIES) $(EXTRA_test_iconv_h_DEPENDENCIES) 
+	@rm -f test-iconv-h$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_iconv_h_OBJECTS) $(test_iconv_h_LDADD) $(LIBS)
+
+test-ignore-value$(EXEEXT): $(test_ignore_value_OBJECTS) $(test_ignore_value_DEPENDENCIES) $(EXTRA_test_ignore_value_DEPENDENCIES) 
+	@rm -f test-ignore-value$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ignore_value_OBJECTS) $(test_ignore_value_LDADD) $(LIBS)
+
+test-inet_pton$(EXEEXT): $(test_inet_pton_OBJECTS) $(test_inet_pton_DEPENDENCIES) $(EXTRA_test_inet_pton_DEPENDENCIES) 
+	@rm -f test-inet_pton$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_inet_pton_OBJECTS) $(test_inet_pton_LDADD) $(LIBS)
+
+test-intprops$(EXEEXT): $(test_intprops_OBJECTS) $(test_intprops_DEPENDENCIES) $(EXTRA_test_intprops_DEPENDENCIES) 
+	@rm -f test-intprops$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_intprops_OBJECTS) $(test_intprops_LDADD) $(LIBS)
+
+test-inttostr$(EXEEXT): $(test_inttostr_OBJECTS) $(test_inttostr_DEPENDENCIES) $(EXTRA_test_inttostr_DEPENDENCIES) 
+	@rm -f test-inttostr$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_inttostr_OBJECTS) $(test_inttostr_LDADD) $(LIBS)
+
+test-inttypes$(EXEEXT): $(test_inttypes_OBJECTS) $(test_inttypes_DEPENDENCIES) $(EXTRA_test_inttypes_DEPENDENCIES) 
+	@rm -f test-inttypes$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_inttypes_OBJECTS) $(test_inttypes_LDADD) $(LIBS)
+
+test-ioctl$(EXEEXT): $(test_ioctl_OBJECTS) $(test_ioctl_DEPENDENCIES) $(EXTRA_test_ioctl_DEPENDENCIES) 
+	@rm -f test-ioctl$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_ioctl_OBJECTS) $(test_ioctl_LDADD) $(LIBS)
+
+test-isatty$(EXEEXT): $(test_isatty_OBJECTS) $(test_isatty_DEPENDENCIES) $(EXTRA_test_isatty_DEPENDENCIES) 
+	@rm -f test-isatty$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_isatty_OBJECTS) $(test_isatty_LDADD) $(LIBS)
+
+test-isblank$(EXEEXT): $(test_isblank_OBJECTS) $(test_isblank_DEPENDENCIES) $(EXTRA_test_isblank_DEPENDENCIES) 
+	@rm -f test-isblank$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_isblank_OBJECTS) $(test_isblank_LDADD) $(LIBS)
+
+test-iswblank$(EXEEXT): $(test_iswblank_OBJECTS) $(test_iswblank_DEPENDENCIES) $(EXTRA_test_iswblank_DEPENDENCIES) 
+	@rm -f test-iswblank$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_iswblank_OBJECTS) $(test_iswblank_LDADD) $(LIBS)
+
+test-iswdigit$(EXEEXT): $(test_iswdigit_OBJECTS) $(test_iswdigit_DEPENDENCIES) $(EXTRA_test_iswdigit_DEPENDENCIES) 
+	@rm -f test-iswdigit$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_iswdigit_OBJECTS) $(test_iswdigit_LDADD) $(LIBS)
+
+test-iswxdigit$(EXEEXT): $(test_iswxdigit_OBJECTS) $(test_iswxdigit_DEPENDENCIES) $(EXTRA_test_iswxdigit_DEPENDENCIES) 
+	@rm -f test-iswxdigit$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_iswxdigit_OBJECTS) $(test_iswxdigit_LDADD) $(LIBS)
+
+test-langinfo$(EXEEXT): $(test_langinfo_OBJECTS) $(test_langinfo_DEPENDENCIES) $(EXTRA_test_langinfo_DEPENDENCIES) 
+	@rm -f test-langinfo$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_langinfo_OBJECTS) $(test_langinfo_LDADD) $(LIBS)
+
+test-limits-h$(EXEEXT): $(test_limits_h_OBJECTS) $(test_limits_h_DEPENDENCIES) $(EXTRA_test_limits_h_DEPENDENCIES) 
+	@rm -f test-limits-h$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_limits_h_OBJECTS) $(test_limits_h_LDADD) $(LIBS)
+
+test-listen$(EXEEXT): $(test_listen_OBJECTS) $(test_listen_DEPENDENCIES) $(EXTRA_test_listen_DEPENDENCIES) 
+	@rm -f test-listen$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_listen_OBJECTS) $(test_listen_LDADD) $(LIBS)
+
+test-localcharset$(EXEEXT): $(test_localcharset_OBJECTS) $(test_localcharset_DEPENDENCIES) $(EXTRA_test_localcharset_DEPENDENCIES) 
+	@rm -f test-localcharset$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_localcharset_OBJECTS) $(test_localcharset_LDADD) $(LIBS)
+
+test-locale$(EXEEXT): $(test_locale_OBJECTS) $(test_locale_DEPENDENCIES) $(EXTRA_test_locale_DEPENDENCIES) 
+	@rm -f test-locale$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_locale_OBJECTS) $(test_locale_LDADD) $(LIBS)
+
+test-localeconv$(EXEEXT): $(test_localeconv_OBJECTS) $(test_localeconv_DEPENDENCIES) $(EXTRA_test_localeconv_DEPENDENCIES) 
+	@rm -f test-localeconv$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_localeconv_OBJECTS) $(test_localeconv_LDADD) $(LIBS)
+
+test-localename$(EXEEXT): $(test_localename_OBJECTS) $(test_localename_DEPENDENCIES) $(EXTRA_test_localename_DEPENDENCIES) 
+	@rm -f test-localename$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_localename_OBJECTS) $(test_localename_LDADD) $(LIBS)
+
+test-lseek$(EXEEXT): $(test_lseek_OBJECTS) $(test_lseek_DEPENDENCIES) $(EXTRA_test_lseek_DEPENDENCIES) 
+	@rm -f test-lseek$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_lseek_OBJECTS) $(test_lseek_LDADD) $(LIBS)
+
+test-lstat$(EXEEXT): $(test_lstat_OBJECTS) $(test_lstat_DEPENDENCIES) $(EXTRA_test_lstat_DEPENDENCIES) 
+	@rm -f test-lstat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_lstat_OBJECTS) $(test_lstat_LDADD) $(LIBS)
+
+test-malloc-gnu$(EXEEXT): $(test_malloc_gnu_OBJECTS) $(test_malloc_gnu_DEPENDENCIES) $(EXTRA_test_malloc_gnu_DEPENDENCIES) 
+	@rm -f test-malloc-gnu$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_malloc_gnu_OBJECTS) $(test_malloc_gnu_LDADD) $(LIBS)
+
+test-malloca$(EXEEXT): $(test_malloca_OBJECTS) $(test_malloca_DEPENDENCIES) $(EXTRA_test_malloca_DEPENDENCIES) 
+	@rm -f test-malloca$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_malloca_OBJECTS) $(test_malloca_LDADD) $(LIBS)
+
+test-mbscasecmp$(EXEEXT): $(test_mbscasecmp_OBJECTS) $(test_mbscasecmp_DEPENDENCIES) $(EXTRA_test_mbscasecmp_DEPENDENCIES) 
+	@rm -f test-mbscasecmp$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbscasecmp_OBJECTS) $(test_mbscasecmp_LDADD) $(LIBS)
+
+test-mbsinit$(EXEEXT): $(test_mbsinit_OBJECTS) $(test_mbsinit_DEPENDENCIES) $(EXTRA_test_mbsinit_DEPENDENCIES) 
+	@rm -f test-mbsinit$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbsinit_OBJECTS) $(test_mbsinit_LDADD) $(LIBS)
+
+test-mbsrtowcs$(EXEEXT): $(test_mbsrtowcs_OBJECTS) $(test_mbsrtowcs_DEPENDENCIES) $(EXTRA_test_mbsrtowcs_DEPENDENCIES) 
+	@rm -f test-mbsrtowcs$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbsrtowcs_OBJECTS) $(test_mbsrtowcs_LDADD) $(LIBS)
+
+test-mbsstr1$(EXEEXT): $(test_mbsstr1_OBJECTS) $(test_mbsstr1_DEPENDENCIES) $(EXTRA_test_mbsstr1_DEPENDENCIES) 
+	@rm -f test-mbsstr1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbsstr1_OBJECTS) $(test_mbsstr1_LDADD) $(LIBS)
+
+test-mbsstr2$(EXEEXT): $(test_mbsstr2_OBJECTS) $(test_mbsstr2_DEPENDENCIES) $(EXTRA_test_mbsstr2_DEPENDENCIES) 
+	@rm -f test-mbsstr2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbsstr2_OBJECTS) $(test_mbsstr2_LDADD) $(LIBS)
+
+test-mbsstr3$(EXEEXT): $(test_mbsstr3_OBJECTS) $(test_mbsstr3_DEPENDENCIES) $(EXTRA_test_mbsstr3_DEPENDENCIES) 
+	@rm -f test-mbsstr3$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_mbsstr3_OBJECTS) $(test_mbsstr3_LDADD) $(LIBS)
+
+test-memchr$(EXEEXT): $(test_memchr_OBJECTS) $(test_memchr_DEPENDENCIES) $(EXTRA_test_memchr_DEPENDENCIES) 
+	@rm -f test-memchr$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_memchr_OBJECTS) $(test_memchr_LDADD) $(LIBS)
+
+test-memchr2$(EXEEXT): $(test_memchr2_OBJECTS) $(test_memchr2_DEPENDENCIES) $(EXTRA_test_memchr2_DEPENDENCIES) 
+	@rm -f test-memchr2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_memchr2_OBJECTS) $(test_memchr2_LDADD) $(LIBS)
+
+test-memrchr$(EXEEXT): $(test_memrchr_OBJECTS) $(test_memrchr_DEPENDENCIES) $(EXTRA_test_memrchr_DEPENDENCIES) 
+	@rm -f test-memrchr$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_memrchr_OBJECTS) $(test_memrchr_LDADD) $(LIBS)
+
+test-nanosleep$(EXEEXT): $(test_nanosleep_OBJECTS) $(test_nanosleep_DEPENDENCIES) $(EXTRA_test_nanosleep_DEPENDENCIES) 
+	@rm -f test-nanosleep$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_nanosleep_OBJECTS) $(test_nanosleep_LDADD) $(LIBS)
+
+test-netinet_in$(EXEEXT): $(test_netinet_in_OBJECTS) $(test_netinet_in_DEPENDENCIES) $(EXTRA_test_netinet_in_DEPENDENCIES) 
+	@rm -f test-netinet_in$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_netinet_in_OBJECTS) $(test_netinet_in_LDADD) $(LIBS)
+
+test-nl_langinfo$(EXEEXT): $(test_nl_langinfo_OBJECTS) $(test_nl_langinfo_DEPENDENCIES) $(EXTRA_test_nl_langinfo_DEPENDENCIES) 
+	@rm -f test-nl_langinfo$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_nl_langinfo_OBJECTS) $(test_nl_langinfo_LDADD) $(LIBS)
+
+test-nl_langinfo-mt$(EXEEXT): $(test_nl_langinfo_mt_OBJECTS) $(test_nl_langinfo_mt_DEPENDENCIES) $(EXTRA_test_nl_langinfo_mt_DEPENDENCIES) 
+	@rm -f test-nl_langinfo-mt$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_nl_langinfo_mt_OBJECTS) $(test_nl_langinfo_mt_LDADD) $(LIBS)
+
+test-open$(EXEEXT): $(test_open_OBJECTS) $(test_open_DEPENDENCIES) $(EXTRA_test_open_DEPENDENCIES) 
+	@rm -f test-open$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_open_OBJECTS) $(test_open_LDADD) $(LIBS)
+
+test-openat$(EXEEXT): $(test_openat_OBJECTS) $(test_openat_DEPENDENCIES) $(EXTRA_test_openat_DEPENDENCIES) 
+	@rm -f test-openat$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_openat_OBJECTS) $(test_openat_LDADD) $(LIBS)
+
+test-openat-safer$(EXEEXT): $(test_openat_safer_OBJECTS) $(test_openat_safer_DEPENDENCIES) $(EXTRA_test_openat_safer_DEPENDENCIES) 
+	@rm -f test-openat-safer$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_openat_safer_OBJECTS) $(test_openat_safer_LDADD) $(LIBS)
+
+test-pathmax$(EXEEXT): $(test_pathmax_OBJECTS) $(test_pathmax_DEPENDENCIES) $(EXTRA_test_pathmax_DEPENDENCIES) 
+	@rm -f test-pathmax$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pathmax_OBJECTS) $(test_pathmax_LDADD) $(LIBS)
+
+test-perror$(EXEEXT): $(test_perror_OBJECTS) $(test_perror_DEPENDENCIES) $(EXTRA_test_perror_DEPENDENCIES) 
+	@rm -f test-perror$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_perror_OBJECTS) $(test_perror_LDADD) $(LIBS)
+
+test-perror2$(EXEEXT): $(test_perror2_OBJECTS) $(test_perror2_DEPENDENCIES) $(EXTRA_test_perror2_DEPENDENCIES) 
+	@rm -f test-perror2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_perror2_OBJECTS) $(test_perror2_LDADD) $(LIBS)
+
+test-pipe$(EXEEXT): $(test_pipe_OBJECTS) $(test_pipe_DEPENDENCIES) $(EXTRA_test_pipe_DEPENDENCIES) 
+	@rm -f test-pipe$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pipe_OBJECTS) $(test_pipe_LDADD) $(LIBS)
+
+test-pthread$(EXEEXT): $(test_pthread_OBJECTS) $(test_pthread_DEPENDENCIES) $(EXTRA_test_pthread_DEPENDENCIES) 
+	@rm -f test-pthread$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pthread_OBJECTS) $(test_pthread_LDADD) $(LIBS)
+
+test-pthread-thread$(EXEEXT): $(test_pthread_thread_OBJECTS) $(test_pthread_thread_DEPENDENCIES) $(EXTRA_test_pthread_thread_DEPENDENCIES) 
+	@rm -f test-pthread-thread$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pthread_thread_OBJECTS) $(test_pthread_thread_LDADD) $(LIBS)
+
+test-pthread_sigmask1$(EXEEXT): $(test_pthread_sigmask1_OBJECTS) $(test_pthread_sigmask1_DEPENDENCIES) $(EXTRA_test_pthread_sigmask1_DEPENDENCIES) 
+	@rm -f test-pthread_sigmask1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pthread_sigmask1_OBJECTS) $(test_pthread_sigmask1_LDADD) $(LIBS)
+
+test-pthread_sigmask2$(EXEEXT): $(test_pthread_sigmask2_OBJECTS) $(test_pthread_sigmask2_DEPENDENCIES) $(EXTRA_test_pthread_sigmask2_DEPENDENCIES) 
+	@rm -f test-pthread_sigmask2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_pthread_sigmask2_OBJECTS) $(test_pthread_sigmask2_LDADD) $(LIBS)
+
+test-quotearg-simple$(EXEEXT): $(test_quotearg_simple_OBJECTS) $(test_quotearg_simple_DEPENDENCIES) $(EXTRA_test_quotearg_simple_DEPENDENCIES) 
+	@rm -f test-quotearg-simple$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_quotearg_simple_OBJECTS) $(test_quotearg_simple_LDADD) $(LIBS)
+
+test-raise$(EXEEXT): $(test_raise_OBJECTS) $(test_raise_DEPENDENCIES) $(EXTRA_test_raise_DEPENDENCIES) 
+	@rm -f test-raise$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_raise_OBJECTS) $(test_raise_LDADD) $(LIBS)
+
+test-rawmemchr$(EXEEXT): $(test_rawmemchr_OBJECTS) $(test_rawmemchr_DEPENDENCIES) $(EXTRA_test_rawmemchr_DEPENDENCIES) 
+	@rm -f test-rawmemchr$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_rawmemchr_OBJECTS) $(test_rawmemchr_LDADD) $(LIBS)
+
+test-read$(EXEEXT): $(test_read_OBJECTS) $(test_read_DEPENDENCIES) $(EXTRA_test_read_DEPENDENCIES) 
+	@rm -f test-read$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_read_OBJECTS) $(test_read_LDADD) $(LIBS)
+
+test-realloc-gnu$(EXEEXT): $(test_realloc_gnu_OBJECTS) $(test_realloc_gnu_DEPENDENCIES) $(EXTRA_test_realloc_gnu_DEPENDENCIES) 
+	@rm -f test-realloc-gnu$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_realloc_gnu_OBJECTS) $(test_realloc_gnu_LDADD) $(LIBS)
+
+test-reallocarray$(EXEEXT): $(test_reallocarray_OBJECTS) $(test_reallocarray_DEPENDENCIES) $(EXTRA_test_reallocarray_DEPENDENCIES) 
+	@rm -f test-reallocarray$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_reallocarray_OBJECTS) $(test_reallocarray_LDADD) $(LIBS)
+
+test-regex$(EXEEXT): $(test_regex_OBJECTS) $(test_regex_DEPENDENCIES) $(EXTRA_test_regex_DEPENDENCIES) 
+	@rm -f test-regex$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_regex_OBJECTS) $(test_regex_LDADD) $(LIBS)
+
+test-sched$(EXEEXT): $(test_sched_OBJECTS) $(test_sched_DEPENDENCIES) $(EXTRA_test_sched_DEPENDENCIES) 
+	@rm -f test-sched$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sched_OBJECTS) $(test_sched_LDADD) $(LIBS)
+
+test-select$(EXEEXT): $(test_select_OBJECTS) $(test_select_DEPENDENCIES) $(EXTRA_test_select_DEPENDENCIES) 
+	@rm -f test-select$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_select_OBJECTS) $(test_select_LDADD) $(LIBS)
+
+test-select-fd$(EXEEXT): $(test_select_fd_OBJECTS) $(test_select_fd_DEPENDENCIES) $(EXTRA_test_select_fd_DEPENDENCIES) 
+	@rm -f test-select-fd$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_select_fd_OBJECTS) $(test_select_fd_LDADD) $(LIBS)
+
+test-select-stdin$(EXEEXT): $(test_select_stdin_OBJECTS) $(test_select_stdin_DEPENDENCIES) $(EXTRA_test_select_stdin_DEPENDENCIES) 
+	@rm -f test-select-stdin$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_select_stdin_OBJECTS) $(test_select_stdin_LDADD) $(LIBS)
+
+test-setenv$(EXEEXT): $(test_setenv_OBJECTS) $(test_setenv_DEPENDENCIES) $(EXTRA_test_setenv_DEPENDENCIES) 
+	@rm -f test-setenv$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setenv_OBJECTS) $(test_setenv_LDADD) $(LIBS)
+
+test-setlocale1$(EXEEXT): $(test_setlocale1_OBJECTS) $(test_setlocale1_DEPENDENCIES) $(EXTRA_test_setlocale1_DEPENDENCIES) 
+	@rm -f test-setlocale1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setlocale1_OBJECTS) $(test_setlocale1_LDADD) $(LIBS)
+
+test-setlocale2$(EXEEXT): $(test_setlocale2_OBJECTS) $(test_setlocale2_DEPENDENCIES) $(EXTRA_test_setlocale2_DEPENDENCIES) 
+	@rm -f test-setlocale2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setlocale2_OBJECTS) $(test_setlocale2_LDADD) $(LIBS)
+
+test-setlocale_null$(EXEEXT): $(test_setlocale_null_OBJECTS) $(test_setlocale_null_DEPENDENCIES) $(EXTRA_test_setlocale_null_DEPENDENCIES) 
+	@rm -f test-setlocale_null$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setlocale_null_OBJECTS) $(test_setlocale_null_LDADD) $(LIBS)
+
+test-setlocale_null-mt-all$(EXEEXT): $(test_setlocale_null_mt_all_OBJECTS) $(test_setlocale_null_mt_all_DEPENDENCIES) $(EXTRA_test_setlocale_null_mt_all_DEPENDENCIES) 
+	@rm -f test-setlocale_null-mt-all$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setlocale_null_mt_all_OBJECTS) $(test_setlocale_null_mt_all_LDADD) $(LIBS)
+
+test-setlocale_null-mt-one$(EXEEXT): $(test_setlocale_null_mt_one_OBJECTS) $(test_setlocale_null_mt_one_DEPENDENCIES) $(EXTRA_test_setlocale_null_mt_one_DEPENDENCIES) 
+	@rm -f test-setlocale_null-mt-one$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setlocale_null_mt_one_OBJECTS) $(test_setlocale_null_mt_one_LDADD) $(LIBS)
+
+test-setsockopt$(EXEEXT): $(test_setsockopt_OBJECTS) $(test_setsockopt_DEPENDENCIES) $(EXTRA_test_setsockopt_DEPENDENCIES) 
+	@rm -f test-setsockopt$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_setsockopt_OBJECTS) $(test_setsockopt_LDADD) $(LIBS)
+
+test-sigaction$(EXEEXT): $(test_sigaction_OBJECTS) $(test_sigaction_DEPENDENCIES) $(EXTRA_test_sigaction_DEPENDENCIES) 
+	@rm -f test-sigaction$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sigaction_OBJECTS) $(test_sigaction_LDADD) $(LIBS)
+
+test-signal-h$(EXEEXT): $(test_signal_h_OBJECTS) $(test_signal_h_DEPENDENCIES) $(EXTRA_test_signal_h_DEPENDENCIES) 
+	@rm -f test-signal-h$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_signal_h_OBJECTS) $(test_signal_h_LDADD) $(LIBS)
+
+test-sigprocmask$(EXEEXT): $(test_sigprocmask_OBJECTS) $(test_sigprocmask_DEPENDENCIES) $(EXTRA_test_sigprocmask_DEPENDENCIES) 
+	@rm -f test-sigprocmask$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sigprocmask_OBJECTS) $(test_sigprocmask_LDADD) $(LIBS)
+
+test-sigsegv-catch-segv1$(EXEEXT): $(test_sigsegv_catch_segv1_OBJECTS) $(test_sigsegv_catch_segv1_DEPENDENCIES) $(EXTRA_test_sigsegv_catch_segv1_DEPENDENCIES) 
+	@rm -f test-sigsegv-catch-segv1$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sigsegv_catch_segv1_OBJECTS) $(test_sigsegv_catch_segv1_LDADD) $(LIBS)
+
+test-sigsegv-catch-segv2$(EXEEXT): $(test_sigsegv_catch_segv2_OBJECTS) $(test_sigsegv_catch_segv2_DEPENDENCIES) $(EXTRA_test_sigsegv_catch_segv2_DEPENDENCIES) 
+	@rm -f test-sigsegv-catch-segv2$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(test_sigsegv_catch_segv2_OBJECTS) $(test_sigsegv_catch_segv2_LDADD) $(LIBS)
+
+test-sigsegv-catch-stackoverflow1$(EXEEXT): $(test_sigsegv_catch_stackoverflow1_OBJECTS) $(test_sigsegv_catch_stackoverflow1_DEPENDENCIES) $(EXTRA_test_sigsegv_catch_stackoverflow1_DEPENDENCIES) 
+	@rm -f test-sigsegv-catch-stackoverflow1$(EXEEXT)
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+# To change the values of 'make' variables: instead of editing Makefiles,
+# (1) if the variable is set in 'config.status', edit 'config.status'
+#     (which will cause the Makefiles to be regenerated when you run 'make');
+# (2) otherwise, pass the desired values on the 'make' command line.
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+	  failcom='fail=yes'; \
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+	esac; \
+	for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  ($(am__cd) $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
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+	if ($(ETAGS) --etags-include --version) >/dev/null 2>&1; then \
+	  include_option=--etags-include; \
+	  empty_fix=.; \
+	else \
+	  include_option=--include; \
+	  empty_fix=; \
+	fi; \
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    test ! -f $$subdir/TAGS || \
+	      set "$$@" "$$include_option=$$here/$$subdir/TAGS"; \
+	  fi; \
+	done; \
+	$(am__define_uniq_tagged_files); \
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+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
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+	  if test $$# -gt 0; then \
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+	      "$$@" $$unique; \
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+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
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+	  fi; \
+	fi
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+	test -z "$(CTAGS_ARGS)$$unique" \
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+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
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+
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+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
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+
+# Recover from deleted '.trs' file; this should ensure that
+# "rm -f foo.log; make foo.trs" re-run 'foo.test', and re-create
+# both 'foo.log' and 'foo.trs'.  Break the recipe in two subshells
+# to avoid problems with "make -n".
+.log.trs:
+	rm -f $< $@
+	$(MAKE) $(AM_MAKEFLAGS) $<
+
+# Leading 'am--fnord' is there to ensure the list of targets does not
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+$(TEST_SUITE_LOG): $(TEST_LOGS)
+	@$(am__set_TESTS_bases); \
+	am__f_ok () { test -f "$$1" && test -r "$$1"; }; \
+	redo_bases=`for i in $$bases; do \
+	              am__f_ok $$i.trs && am__f_ok $$i.log || echo $$i; \
+	            done`; \
+	if test -n "$$redo_bases"; then \
+	  redo_logs=`for i in $$redo_bases; do echo $$i.log; done`; \
+	  redo_results=`for i in $$redo_bases; do echo $$i.trs; done`; \
+	  if $(am__make_dryrun); then :; else \
+	    rm -f $$redo_logs && rm -f $$redo_results || exit 1; \
+	  fi; \
+	fi; \
+	if test -n "$$am__remaking_logs"; then \
+	  echo "fatal: making $(TEST_SUITE_LOG): possible infinite" \
+	       "recursion detected" >&2; \
+	elif test -n "$$redo_logs"; then \
+	  am__remaking_logs=yes $(MAKE) $(AM_MAKEFLAGS) $$redo_logs; \
+	fi; \
+	if $(am__make_dryrun); then :; else \
+	  st=0;  \
+	  errmsg="fatal: making $(TEST_SUITE_LOG): failed to create"; \
+	  for i in $$redo_bases; do \
+	    test -f $$i.trs && test -r $$i.trs \
+	      || { echo "$$errmsg $$i.trs" >&2; st=1; }; \
+	    test -f $$i.log && test -r $$i.log \
+	      || { echo "$$errmsg $$i.log" >&2; st=1; }; \
+	  done; \
+	  test $$st -eq 0 || exit 1; \
+	fi
+	@$(am__sh_e_setup); $(am__tty_colors); $(am__set_TESTS_bases); \
+	ws='[ 	]'; \
+	results=`for b in $$bases; do echo $$b.trs; done`; \
+	test -n "$$results" || results=/dev/null; \
+	all=`  grep "^$$ws*:test-result:"           $$results | wc -l`; \
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+	fail=` grep "^$$ws*:test-result:$$ws*FAIL"  $$results | wc -l`; \
+	skip=` grep "^$$ws*:test-result:$$ws*SKIP"  $$results | wc -l`; \
+	xfail=`grep "^$$ws*:test-result:$$ws*XFAIL" $$results | wc -l`; \
+	xpass=`grep "^$$ws*:test-result:$$ws*XPASS" $$results | wc -l`; \
+	error=`grep "^$$ws*:test-result:$$ws*ERROR" $$results | wc -l`; \
+	if test `expr $$fail + $$xpass + $$error` -eq 0; then \
+	  success=true; \
+	else \
+	  success=false; \
+	fi; \
+	br='==================='; br=$$br$$br$$br$$br; \
+	result_count () \
+	{ \
+	    if test x"$$1" = x"--maybe-color"; then \
+	      maybe_colorize=yes; \
+	    elif test x"$$1" = x"--no-color"; then \
+	      maybe_colorize=no; \
+	    else \
+	      echo "$@: invalid 'result_count' usage" >&2; exit 4; \
+	    fi; \
+	    shift; \
+	    desc=$$1 count=$$2; \
+	    if test $$maybe_colorize = yes && test $$count -gt 0; then \
+	      color_start=$$3 color_end=$$std; \
+	    else \
+	      color_start= color_end=; \
+	    fi; \
+	    echo "$${color_start}# $$desc $$count$${color_end}"; \
+	}; \
+	create_testsuite_report () \
+	{ \
+	  result_count $$1 "TOTAL:" $$all   "$$brg"; \
+	  result_count $$1 "PASS: " $$pass  "$$grn"; \
+	  result_count $$1 "SKIP: " $$skip  "$$blu"; \
+	  result_count $$1 "XFAIL:" $$xfail "$$lgn"; \
+	  result_count $$1 "FAIL: " $$fail  "$$red"; \
+	  result_count $$1 "XPASS:" $$xpass "$$red"; \
+	  result_count $$1 "ERROR:" $$error "$$mgn"; \
+	}; \
+	{								\
+	  echo "$(PACKAGE_STRING): $(subdir)/$(TEST_SUITE_LOG)" |	\
+	    $(am__rst_title);						\
+	  create_testsuite_report --no-color;				\
+	  echo;								\
+	  echo ".. contents:: :depth: 2";				\
+	  echo;								\
+	  for b in $$bases; do echo $$b; done				\
+	    | $(am__create_global_log);					\
+	} >$(TEST_SUITE_LOG).tmp || exit 1;				\
+	mv $(TEST_SUITE_LOG).tmp $(TEST_SUITE_LOG);			\
+	if $$success; then						\
+	  col="$$grn";							\
+	 else								\
+	  col="$$red";							\
+	  test x"$$VERBOSE" = x || cat $(TEST_SUITE_LOG);		\
+	fi;								\
+	echo "$${col}$$br$${std}"; 					\
+	echo "$${col}Testsuite summary"$(AM_TESTSUITE_SUMMARY_HEADER)"$${std}";	\
+	echo "$${col}$$br$${std}"; 					\
+	create_testsuite_report --maybe-color;				\
+	echo "$$col$$br$$std";						\
+	if $$success; then :; else					\
+	  echo "$${col}See $(subdir)/$(TEST_SUITE_LOG)$${std}";		\
+	  if test -n "$(PACKAGE_BUGREPORT)"; then			\
+	    echo "$${col}Please report to $(PACKAGE_BUGREPORT)$${std}";	\
+	  fi;								\
+	  echo "$$col$$br$$std";					\
+	fi;								\
+	$$success || exit 1
+
+check-TESTS: $(check_PROGRAMS) $(check_LIBRARIES)
+	@list='$(RECHECK_LOGS)';           test -z "$$list" || rm -f $$list
+	@list='$(RECHECK_LOGS:.log=.trs)'; test -z "$$list" || rm -f $$list
+	@test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+	@set +e; $(am__set_TESTS_bases); \
+	log_list=`for i in $$bases; do echo $$i.log; done`; \
+	trs_list=`for i in $$bases; do echo $$i.trs; done`; \
+	log_list=`echo $$log_list`; trs_list=`echo $$trs_list`; \
+	$(MAKE) $(AM_MAKEFLAGS) $(TEST_SUITE_LOG) TEST_LOGS="$$log_list"; \
+	exit $$?;
+recheck: all $(check_PROGRAMS) $(check_LIBRARIES)
+	@test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+	@set +e; $(am__set_TESTS_bases); \
+	bases=`for i in $$bases; do echo $$i; done \
+	         | $(am__list_recheck_tests)` || exit 1; \
+	log_list=`for i in $$bases; do echo $$i.log; done`; \
+	log_list=`echo $$log_list`; \
+	$(MAKE) $(AM_MAKEFLAGS) $(TEST_SUITE_LOG) \
+	        am__force_recheck=am--force-recheck \
+	        TEST_LOGS="$$log_list"; \
+	exit $$?
+test-accept.log: test-accept$(EXEEXT)
+	@p='test-accept$(EXEEXT)'; \
+	b='test-accept'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-alignof.log: test-alignof$(EXEEXT)
+	@p='test-alignof$(EXEEXT)'; \
+	b='test-alignof'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-alloca-opt.log: test-alloca-opt$(EXEEXT)
+	@p='test-alloca-opt$(EXEEXT)'; \
+	b='test-alloca-opt'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-argmatch.log: test-argmatch$(EXEEXT)
+	@p='test-argmatch$(EXEEXT)'; \
+	b='test-argmatch'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-arpa_inet.log: test-arpa_inet$(EXEEXT)
+	@p='test-arpa_inet$(EXEEXT)'; \
+	b='test-arpa_inet'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-binary-io.sh.log: test-binary-io.sh
+	@p='test-binary-io.sh'; \
+	b='test-binary-io.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-bind.log: test-bind$(EXEEXT)
+	@p='test-bind$(EXEEXT)'; \
+	b='test-bind'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-bitrotate.log: test-bitrotate$(EXEEXT)
+	@p='test-bitrotate$(EXEEXT)'; \
+	b='test-bitrotate'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-btowc1.sh.log: test-btowc1.sh
+	@p='test-btowc1.sh'; \
+	b='test-btowc1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-btowc2.sh.log: test-btowc2.sh
+	@p='test-btowc2.sh'; \
+	b='test-btowc2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-c-ctype.log: test-c-ctype$(EXEEXT)
+	@p='test-c-ctype$(EXEEXT)'; \
+	b='test-c-ctype'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-c-stack.sh.log: test-c-stack.sh
+	@p='test-c-stack.sh'; \
+	b='test-c-stack.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-c-stack2.sh.log: test-c-stack2.sh
+	@p='test-c-stack2.sh'; \
+	b='test-c-stack2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-c-strcase.sh.log: test-c-strcase.sh
+	@p='test-c-strcase.sh'; \
+	b='test-c-strcase.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-calloc-gnu.log: test-calloc-gnu$(EXEEXT)
+	@p='test-calloc-gnu$(EXEEXT)'; \
+	b='test-calloc-gnu'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-chdir.log: test-chdir$(EXEEXT)
+	@p='test-chdir$(EXEEXT)'; \
+	b='test-chdir'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-cloexec.log: test-cloexec$(EXEEXT)
+	@p='test-cloexec$(EXEEXT)'; \
+	b='test-cloexec'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-close.log: test-close$(EXEEXT)
+	@p='test-close$(EXEEXT)'; \
+	b='test-close'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-connect.log: test-connect$(EXEEXT)
+	@p='test-connect$(EXEEXT)'; \
+	b='test-connect'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ctype.log: test-ctype$(EXEEXT)
+	@p='test-ctype$(EXEEXT)'; \
+	b='test-ctype'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dfa-invalid-char-class.sh.log: test-dfa-invalid-char-class.sh
+	@p='test-dfa-invalid-char-class.sh'; \
+	b='test-dfa-invalid-char-class.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dfa-invalid-merge.sh.log: test-dfa-invalid-merge.sh
+	@p='test-dfa-invalid-merge.sh'; \
+	b='test-dfa-invalid-merge.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dfa-match.sh.log: test-dfa-match.sh
+	@p='test-dfa-match.sh'; \
+	b='test-dfa-match.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dirent.log: test-dirent$(EXEEXT)
+	@p='test-dirent$(EXEEXT)'; \
+	b='test-dirent'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dup.log: test-dup$(EXEEXT)
+	@p='test-dup$(EXEEXT)'; \
+	b='test-dup'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dup2.log: test-dup2$(EXEEXT)
+	@p='test-dup2$(EXEEXT)'; \
+	b='test-dup2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dynarray.log: test-dynarray$(EXEEXT)
+	@p='test-dynarray$(EXEEXT)'; \
+	b='test-dynarray'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-environ.log: test-environ$(EXEEXT)
+	@p='test-environ$(EXEEXT)'; \
+	b='test-environ'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-errno.log: test-errno$(EXEEXT)
+	@p='test-errno$(EXEEXT)'; \
+	b='test-errno'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude1.sh.log: test-exclude1.sh
+	@p='test-exclude1.sh'; \
+	b='test-exclude1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude2.sh.log: test-exclude2.sh
+	@p='test-exclude2.sh'; \
+	b='test-exclude2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude3.sh.log: test-exclude3.sh
+	@p='test-exclude3.sh'; \
+	b='test-exclude3.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude4.sh.log: test-exclude4.sh
+	@p='test-exclude4.sh'; \
+	b='test-exclude4.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude5.sh.log: test-exclude5.sh
+	@p='test-exclude5.sh'; \
+	b='test-exclude5.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude6.sh.log: test-exclude6.sh
+	@p='test-exclude6.sh'; \
+	b='test-exclude6.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude7.sh.log: test-exclude7.sh
+	@p='test-exclude7.sh'; \
+	b='test-exclude7.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-exclude8.sh.log: test-exclude8.sh
+	@p='test-exclude8.sh'; \
+	b='test-exclude8.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fchdir.log: test-fchdir$(EXEEXT)
+	@p='test-fchdir$(EXEEXT)'; \
+	b='test-fchdir'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fcntl-h.log: test-fcntl-h$(EXEEXT)
+	@p='test-fcntl-h$(EXEEXT)'; \
+	b='test-fcntl-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fcntl-safer.log: test-fcntl-safer$(EXEEXT)
+	@p='test-fcntl-safer$(EXEEXT)'; \
+	b='test-fcntl-safer'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fcntl.log: test-fcntl$(EXEEXT)
+	@p='test-fcntl$(EXEEXT)'; \
+	b='test-fcntl'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fdopen.log: test-fdopen$(EXEEXT)
+	@p='test-fdopen$(EXEEXT)'; \
+	b='test-fdopen'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fdopendir.log: test-fdopendir$(EXEEXT)
+	@p='test-fdopendir$(EXEEXT)'; \
+	b='test-fdopendir'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fgetc.log: test-fgetc$(EXEEXT)
+	@p='test-fgetc$(EXEEXT)'; \
+	b='test-fgetc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-float.log: test-float$(EXEEXT)
+	@p='test-float$(EXEEXT)'; \
+	b='test-float'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fnmatch-h.log: test-fnmatch-h$(EXEEXT)
+	@p='test-fnmatch-h$(EXEEXT)'; \
+	b='test-fnmatch-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fnmatch.log: test-fnmatch$(EXEEXT)
+	@p='test-fnmatch$(EXEEXT)'; \
+	b='test-fnmatch'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fopen-gnu.log: test-fopen-gnu$(EXEEXT)
+	@p='test-fopen-gnu$(EXEEXT)'; \
+	b='test-fopen-gnu'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fopen.log: test-fopen$(EXEEXT)
+	@p='test-fopen$(EXEEXT)'; \
+	b='test-fopen'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fpending.sh.log: test-fpending.sh
+	@p='test-fpending.sh'; \
+	b='test-fpending.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fputc.log: test-fputc$(EXEEXT)
+	@p='test-fputc$(EXEEXT)'; \
+	b='test-fputc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fread.log: test-fread$(EXEEXT)
+	@p='test-fread$(EXEEXT)'; \
+	b='test-fread'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-free.log: test-free$(EXEEXT)
+	@p='test-free$(EXEEXT)'; \
+	b='test-free'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fstat.log: test-fstat$(EXEEXT)
+	@p='test-fstat$(EXEEXT)'; \
+	b='test-fstat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fstatat.log: test-fstatat$(EXEEXT)
+	@p='test-fstatat$(EXEEXT)'; \
+	b='test-fstatat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ftruncate.sh.log: test-ftruncate.sh
+	@p='test-ftruncate.sh'; \
+	b='test-ftruncate.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-fwrite.log: test-fwrite$(EXEEXT)
+	@p='test-fwrite$(EXEEXT)'; \
+	b='test-fwrite'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getcwd-lgpl.log: test-getcwd-lgpl$(EXEEXT)
+	@p='test-getcwd-lgpl$(EXEEXT)'; \
+	b='test-getcwd-lgpl'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getdtablesize.log: test-getdtablesize$(EXEEXT)
+	@p='test-getdtablesize$(EXEEXT)'; \
+	b='test-getdtablesize'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getopt-gnu.log: test-getopt-gnu$(EXEEXT)
+	@p='test-getopt-gnu$(EXEEXT)'; \
+	b='test-getopt-gnu'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getopt-posix.log: test-getopt-posix$(EXEEXT)
+	@p='test-getopt-posix$(EXEEXT)'; \
+	b='test-getopt-posix'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-getprogname.log: test-getprogname$(EXEEXT)
+	@p='test-getprogname$(EXEEXT)'; \
+	b='test-getprogname'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-gettimeofday.log: test-gettimeofday$(EXEEXT)
+	@p='test-gettimeofday$(EXEEXT)'; \
+	b='test-gettimeofday'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-hard-locale.log: test-hard-locale$(EXEEXT)
+	@p='test-hard-locale$(EXEEXT)'; \
+	b='test-hard-locale'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-hash.log: test-hash$(EXEEXT)
+	@p='test-hash$(EXEEXT)'; \
+	b='test-hash'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-i-ring.log: test-i-ring$(EXEEXT)
+	@p='test-i-ring$(EXEEXT)'; \
+	b='test-i-ring'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-iconv-h.log: test-iconv-h$(EXEEXT)
+	@p='test-iconv-h$(EXEEXT)'; \
+	b='test-iconv-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-iconv.log: test-iconv$(EXEEXT)
+	@p='test-iconv$(EXEEXT)'; \
+	b='test-iconv'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ignore-value.log: test-ignore-value$(EXEEXT)
+	@p='test-ignore-value$(EXEEXT)'; \
+	b='test-ignore-value'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-inet_pton.log: test-inet_pton$(EXEEXT)
+	@p='test-inet_pton$(EXEEXT)'; \
+	b='test-inet_pton'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-intprops.log: test-intprops$(EXEEXT)
+	@p='test-intprops$(EXEEXT)'; \
+	b='test-intprops'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-inttostr.log: test-inttostr$(EXEEXT)
+	@p='test-inttostr$(EXEEXT)'; \
+	b='test-inttostr'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-inttypes.log: test-inttypes$(EXEEXT)
+	@p='test-inttypes$(EXEEXT)'; \
+	b='test-inttypes'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-ioctl.log: test-ioctl$(EXEEXT)
+	@p='test-ioctl$(EXEEXT)'; \
+	b='test-ioctl'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-isatty.log: test-isatty$(EXEEXT)
+	@p='test-isatty$(EXEEXT)'; \
+	b='test-isatty'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-isblank.log: test-isblank$(EXEEXT)
+	@p='test-isblank$(EXEEXT)'; \
+	b='test-isblank'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-iswblank.log: test-iswblank$(EXEEXT)
+	@p='test-iswblank$(EXEEXT)'; \
+	b='test-iswblank'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-iswdigit.sh.log: test-iswdigit.sh
+	@p='test-iswdigit.sh'; \
+	b='test-iswdigit.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-iswxdigit.sh.log: test-iswxdigit.sh
+	@p='test-iswxdigit.sh'; \
+	b='test-iswxdigit.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-langinfo.log: test-langinfo$(EXEEXT)
+	@p='test-langinfo$(EXEEXT)'; \
+	b='test-langinfo'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-limits-h.log: test-limits-h$(EXEEXT)
+	@p='test-limits-h$(EXEEXT)'; \
+	b='test-limits-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-listen.log: test-listen$(EXEEXT)
+	@p='test-listen$(EXEEXT)'; \
+	b='test-listen'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-locale.log: test-locale$(EXEEXT)
+	@p='test-locale$(EXEEXT)'; \
+	b='test-locale'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-localeconv.log: test-localeconv$(EXEEXT)
+	@p='test-localeconv$(EXEEXT)'; \
+	b='test-localeconv'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-localename.log: test-localename$(EXEEXT)
+	@p='test-localename$(EXEEXT)'; \
+	b='test-localename'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-lseek.sh.log: test-lseek.sh
+	@p='test-lseek.sh'; \
+	b='test-lseek.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-lstat.log: test-lstat$(EXEEXT)
+	@p='test-lstat$(EXEEXT)'; \
+	b='test-lstat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-malloc-gnu.log: test-malloc-gnu$(EXEEXT)
+	@p='test-malloc-gnu$(EXEEXT)'; \
+	b='test-malloc-gnu'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-malloca.log: test-malloca$(EXEEXT)
+	@p='test-malloca$(EXEEXT)'; \
+	b='test-malloca'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbscasecmp.sh.log: test-mbscasecmp.sh
+	@p='test-mbscasecmp.sh'; \
+	b='test-mbscasecmp.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsinit.sh.log: test-mbsinit.sh
+	@p='test-mbsinit.sh'; \
+	b='test-mbsinit.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsrtowcs1.sh.log: test-mbsrtowcs1.sh
+	@p='test-mbsrtowcs1.sh'; \
+	b='test-mbsrtowcs1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsrtowcs2.sh.log: test-mbsrtowcs2.sh
+	@p='test-mbsrtowcs2.sh'; \
+	b='test-mbsrtowcs2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsrtowcs3.sh.log: test-mbsrtowcs3.sh
+	@p='test-mbsrtowcs3.sh'; \
+	b='test-mbsrtowcs3.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsrtowcs4.sh.log: test-mbsrtowcs4.sh
+	@p='test-mbsrtowcs4.sh'; \
+	b='test-mbsrtowcs4.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsstr1.log: test-mbsstr1$(EXEEXT)
+	@p='test-mbsstr1$(EXEEXT)'; \
+	b='test-mbsstr1'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsstr2.sh.log: test-mbsstr2.sh
+	@p='test-mbsstr2.sh'; \
+	b='test-mbsstr2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-mbsstr3.sh.log: test-mbsstr3.sh
+	@p='test-mbsstr3.sh'; \
+	b='test-mbsstr3.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-memchr.log: test-memchr$(EXEEXT)
+	@p='test-memchr$(EXEEXT)'; \
+	b='test-memchr'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-memchr2.log: test-memchr2$(EXEEXT)
+	@p='test-memchr2$(EXEEXT)'; \
+	b='test-memchr2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-memrchr.log: test-memrchr$(EXEEXT)
+	@p='test-memrchr$(EXEEXT)'; \
+	b='test-memrchr'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-nanosleep.log: test-nanosleep$(EXEEXT)
+	@p='test-nanosleep$(EXEEXT)'; \
+	b='test-nanosleep'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-netinet_in.log: test-netinet_in$(EXEEXT)
+	@p='test-netinet_in$(EXEEXT)'; \
+	b='test-netinet_in'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-nl_langinfo.sh.log: test-nl_langinfo.sh
+	@p='test-nl_langinfo.sh'; \
+	b='test-nl_langinfo.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-nl_langinfo-mt.log: test-nl_langinfo-mt$(EXEEXT)
+	@p='test-nl_langinfo-mt$(EXEEXT)'; \
+	b='test-nl_langinfo-mt'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-open.log: test-open$(EXEEXT)
+	@p='test-open$(EXEEXT)'; \
+	b='test-open'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-openat-safer.log: test-openat-safer$(EXEEXT)
+	@p='test-openat-safer$(EXEEXT)'; \
+	b='test-openat-safer'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-openat.log: test-openat$(EXEEXT)
+	@p='test-openat$(EXEEXT)'; \
+	b='test-openat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pathmax.log: test-pathmax$(EXEEXT)
+	@p='test-pathmax$(EXEEXT)'; \
+	b='test-pathmax'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-perror.sh.log: test-perror.sh
+	@p='test-perror.sh'; \
+	b='test-perror.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-perror2.log: test-perror2$(EXEEXT)
+	@p='test-perror2$(EXEEXT)'; \
+	b='test-perror2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pipe.log: test-pipe$(EXEEXT)
+	@p='test-pipe$(EXEEXT)'; \
+	b='test-pipe'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pthread.log: test-pthread$(EXEEXT)
+	@p='test-pthread$(EXEEXT)'; \
+	b='test-pthread'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pthread-thread.log: test-pthread-thread$(EXEEXT)
+	@p='test-pthread-thread$(EXEEXT)'; \
+	b='test-pthread-thread'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pthread_sigmask1.log: test-pthread_sigmask1$(EXEEXT)
+	@p='test-pthread_sigmask1$(EXEEXT)'; \
+	b='test-pthread_sigmask1'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-pthread_sigmask2.log: test-pthread_sigmask2$(EXEEXT)
+	@p='test-pthread_sigmask2$(EXEEXT)'; \
+	b='test-pthread_sigmask2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-quotearg-simple.log: test-quotearg-simple$(EXEEXT)
+	@p='test-quotearg-simple$(EXEEXT)'; \
+	b='test-quotearg-simple'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-raise.log: test-raise$(EXEEXT)
+	@p='test-raise$(EXEEXT)'; \
+	b='test-raise'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-rawmemchr.log: test-rawmemchr$(EXEEXT)
+	@p='test-rawmemchr$(EXEEXT)'; \
+	b='test-rawmemchr'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-read.log: test-read$(EXEEXT)
+	@p='test-read$(EXEEXT)'; \
+	b='test-read'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-realloc-gnu.log: test-realloc-gnu$(EXEEXT)
+	@p='test-realloc-gnu$(EXEEXT)'; \
+	b='test-realloc-gnu'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-reallocarray.log: test-reallocarray$(EXEEXT)
+	@p='test-reallocarray$(EXEEXT)'; \
+	b='test-reallocarray'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-regex.log: test-regex$(EXEEXT)
+	@p='test-regex$(EXEEXT)'; \
+	b='test-regex'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sched.log: test-sched$(EXEEXT)
+	@p='test-sched$(EXEEXT)'; \
+	b='test-sched'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-select.log: test-select$(EXEEXT)
+	@p='test-select$(EXEEXT)'; \
+	b='test-select'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-select-in.sh.log: test-select-in.sh
+	@p='test-select-in.sh'; \
+	b='test-select-in.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-select-out.sh.log: test-select-out.sh
+	@p='test-select-out.sh'; \
+	b='test-select-out.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setenv.log: test-setenv$(EXEEXT)
+	@p='test-setenv$(EXEEXT)'; \
+	b='test-setenv'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setlocale_null.log: test-setlocale_null$(EXEEXT)
+	@p='test-setlocale_null$(EXEEXT)'; \
+	b='test-setlocale_null'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setlocale_null-mt-one.log: test-setlocale_null-mt-one$(EXEEXT)
+	@p='test-setlocale_null-mt-one$(EXEEXT)'; \
+	b='test-setlocale_null-mt-one'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setlocale_null-mt-all.log: test-setlocale_null-mt-all$(EXEEXT)
+	@p='test-setlocale_null-mt-all$(EXEEXT)'; \
+	b='test-setlocale_null-mt-all'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setlocale1.sh.log: test-setlocale1.sh
+	@p='test-setlocale1.sh'; \
+	b='test-setlocale1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setlocale2.sh.log: test-setlocale2.sh
+	@p='test-setlocale2.sh'; \
+	b='test-setlocale2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-setsockopt.log: test-setsockopt$(EXEEXT)
+	@p='test-setsockopt$(EXEEXT)'; \
+	b='test-setsockopt'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sigaction.log: test-sigaction$(EXEEXT)
+	@p='test-sigaction$(EXEEXT)'; \
+	b='test-sigaction'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-signal-h.log: test-signal-h$(EXEEXT)
+	@p='test-signal-h$(EXEEXT)'; \
+	b='test-signal-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sigprocmask.log: test-sigprocmask$(EXEEXT)
+	@p='test-sigprocmask$(EXEEXT)'; \
+	b='test-sigprocmask'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sigsegv-catch-segv1.log: test-sigsegv-catch-segv1$(EXEEXT)
+	@p='test-sigsegv-catch-segv1$(EXEEXT)'; \
+	b='test-sigsegv-catch-segv1'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sigsegv-catch-segv2.log: test-sigsegv-catch-segv2$(EXEEXT)
+	@p='test-sigsegv-catch-segv2$(EXEEXT)'; \
+	b='test-sigsegv-catch-segv2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sigsegv-catch-stackoverflow1.log: test-sigsegv-catch-stackoverflow1$(EXEEXT)
+	@p='test-sigsegv-catch-stackoverflow1$(EXEEXT)'; \
+	b='test-sigsegv-catch-stackoverflow1'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sigsegv-catch-stackoverflow2.log: test-sigsegv-catch-stackoverflow2$(EXEEXT)
+	@p='test-sigsegv-catch-stackoverflow2$(EXEEXT)'; \
+	b='test-sigsegv-catch-stackoverflow2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sleep.log: test-sleep$(EXEEXT)
+	@p='test-sleep$(EXEEXT)'; \
+	b='test-sleep'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-snprintf.log: test-snprintf$(EXEEXT)
+	@p='test-snprintf$(EXEEXT)'; \
+	b='test-snprintf'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sockets.log: test-sockets$(EXEEXT)
+	@p='test-sockets$(EXEEXT)'; \
+	b='test-sockets'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stat.log: test-stat$(EXEEXT)
+	@p='test-stat$(EXEEXT)'; \
+	b='test-stat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stat-time.log: test-stat-time$(EXEEXT)
+	@p='test-stat-time$(EXEEXT)'; \
+	b='test-stat-time'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stdalign.log: test-stdalign$(EXEEXT)
+	@p='test-stdalign$(EXEEXT)'; \
+	b='test-stdalign'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stdbool.log: test-stdbool$(EXEEXT)
+	@p='test-stdbool$(EXEEXT)'; \
+	b='test-stdbool'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stddef.log: test-stddef$(EXEEXT)
+	@p='test-stddef$(EXEEXT)'; \
+	b='test-stddef'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stdint.log: test-stdint$(EXEEXT)
+	@p='test-stdint$(EXEEXT)'; \
+	b='test-stdint'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stdio.log: test-stdio$(EXEEXT)
+	@p='test-stdio$(EXEEXT)'; \
+	b='test-stdio'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-stdlib.log: test-stdlib$(EXEEXT)
+	@p='test-stdlib$(EXEEXT)'; \
+	b='test-stdlib'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strerror.log: test-strerror$(EXEEXT)
+	@p='test-strerror$(EXEEXT)'; \
+	b='test-strerror'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strerror_r.log: test-strerror_r$(EXEEXT)
+	@p='test-strerror_r$(EXEEXT)'; \
+	b='test-strerror_r'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-striconv.log: test-striconv$(EXEEXT)
+	@p='test-striconv$(EXEEXT)'; \
+	b='test-striconv'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-string.log: test-string$(EXEEXT)
+	@p='test-string$(EXEEXT)'; \
+	b='test-string'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strnlen.log: test-strnlen$(EXEEXT)
+	@p='test-strnlen$(EXEEXT)'; \
+	b='test-strnlen'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strstr.log: test-strstr$(EXEEXT)
+	@p='test-strstr$(EXEEXT)'; \
+	b='test-strstr'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strtoimax.log: test-strtoimax$(EXEEXT)
+	@p='test-strtoimax$(EXEEXT)'; \
+	b='test-strtoimax'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strtoll.log: test-strtoll$(EXEEXT)
+	@p='test-strtoll$(EXEEXT)'; \
+	b='test-strtoll'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strtoull.log: test-strtoull$(EXEEXT)
+	@p='test-strtoull$(EXEEXT)'; \
+	b='test-strtoull'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-strtoumax.log: test-strtoumax$(EXEEXT)
+	@p='test-strtoumax$(EXEEXT)'; \
+	b='test-strtoumax'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-symlink.log: test-symlink$(EXEEXT)
+	@p='test-symlink$(EXEEXT)'; \
+	b='test-symlink'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_ioctl.log: test-sys_ioctl$(EXEEXT)
+	@p='test-sys_ioctl$(EXEEXT)'; \
+	b='test-sys_ioctl'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_select.log: test-sys_select$(EXEEXT)
+	@p='test-sys_select$(EXEEXT)'; \
+	b='test-sys_select'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_socket.log: test-sys_socket$(EXEEXT)
+	@p='test-sys_socket$(EXEEXT)'; \
+	b='test-sys_socket'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_stat.log: test-sys_stat$(EXEEXT)
+	@p='test-sys_stat$(EXEEXT)'; \
+	b='test-sys_stat'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_time.log: test-sys_time$(EXEEXT)
+	@p='test-sys_time$(EXEEXT)'; \
+	b='test-sys_time'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_types.log: test-sys_types$(EXEEXT)
+	@p='test-sys_types$(EXEEXT)'; \
+	b='test-sys_types'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-sys_uio.log: test-sys_uio$(EXEEXT)
+	@p='test-sys_uio$(EXEEXT)'; \
+	b='test-sys_uio'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-init.sh.log: test-init.sh
+	@p='test-init.sh'; \
+	b='test-init.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-thread_self.log: test-thread_self$(EXEEXT)
+	@p='test-thread_self$(EXEEXT)'; \
+	b='test-thread_self'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-thread_create.log: test-thread_create$(EXEEXT)
+	@p='test-thread_create$(EXEEXT)'; \
+	b='test-thread_create'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-time.log: test-time$(EXEEXT)
+	@p='test-time$(EXEEXT)'; \
+	b='test-time'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-dup-safer.log: test-dup-safer$(EXEEXT)
+	@p='test-dup-safer$(EXEEXT)'; \
+	b='test-dup-safer'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-unistd.log: test-unistd$(EXEEXT)
+	@p='test-unistd$(EXEEXT)'; \
+	b='test-unistd'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-u8-mbtoucr.log: test-u8-mbtoucr$(EXEEXT)
+	@p='test-u8-mbtoucr$(EXEEXT)'; \
+	b='test-u8-mbtoucr'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-u8-uctomb.log: test-u8-uctomb$(EXEEXT)
+	@p='test-u8-uctomb$(EXEEXT)'; \
+	b='test-u8-uctomb'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-uc_width.log: test-uc_width$(EXEEXT)
+	@p='test-uc_width$(EXEEXT)'; \
+	b='test-uc_width'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+uniwidth/test-uc_width2.sh.log: uniwidth/test-uc_width2.sh
+	@p='uniwidth/test-uc_width2.sh'; \
+	b='uniwidth/test-uc_width2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-unsetenv.log: test-unsetenv$(EXEEXT)
+	@p='test-unsetenv$(EXEEXT)'; \
+	b='test-unsetenv'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-vasnprintf.log: test-vasnprintf$(EXEEXT)
+	@p='test-vasnprintf$(EXEEXT)'; \
+	b='test-vasnprintf'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-vc-list-files-git.sh.log: test-vc-list-files-git.sh
+	@p='test-vc-list-files-git.sh'; \
+	b='test-vc-list-files-git.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-vc-list-files-cvs.sh.log: test-vc-list-files-cvs.sh
+	@p='test-vc-list-files-cvs.sh'; \
+	b='test-vc-list-files-cvs.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-verify.log: test-verify$(EXEEXT)
+	@p='test-verify$(EXEEXT)'; \
+	b='test-verify'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-verify.sh.log: test-verify.sh
+	@p='test-verify.sh'; \
+	b='test-verify.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-version-etc.sh.log: test-version-etc.sh
+	@p='test-version-etc.sh'; \
+	b='test-version-etc.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wchar.log: test-wchar$(EXEEXT)
+	@p='test-wchar$(EXEEXT)'; \
+	b='test-wchar'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb.sh.log: test-wcrtomb.sh
+	@p='test-wcrtomb.sh'; \
+	b='test-wcrtomb.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-1.sh.log: test-wcrtomb-w32-1.sh
+	@p='test-wcrtomb-w32-1.sh'; \
+	b='test-wcrtomb-w32-1.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-2.sh.log: test-wcrtomb-w32-2.sh
+	@p='test-wcrtomb-w32-2.sh'; \
+	b='test-wcrtomb-w32-2.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-3.sh.log: test-wcrtomb-w32-3.sh
+	@p='test-wcrtomb-w32-3.sh'; \
+	b='test-wcrtomb-w32-3.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-4.sh.log: test-wcrtomb-w32-4.sh
+	@p='test-wcrtomb-w32-4.sh'; \
+	b='test-wcrtomb-w32-4.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-5.sh.log: test-wcrtomb-w32-5.sh
+	@p='test-wcrtomb-w32-5.sh'; \
+	b='test-wcrtomb-w32-5.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-6.sh.log: test-wcrtomb-w32-6.sh
+	@p='test-wcrtomb-w32-6.sh'; \
+	b='test-wcrtomb-w32-6.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcrtomb-w32-7.sh.log: test-wcrtomb-w32-7.sh
+	@p='test-wcrtomb-w32-7.sh'; \
+	b='test-wcrtomb-w32-7.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wctype-h.log: test-wctype-h$(EXEEXT)
+	@p='test-wctype-h$(EXEEXT)'; \
+	b='test-wctype-h'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-wcwidth.log: test-wcwidth$(EXEEXT)
+	@p='test-wcwidth$(EXEEXT)'; \
+	b='test-wcwidth'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-xalloc-die.sh.log: test-xalloc-die.sh
+	@p='test-xalloc-die.sh'; \
+	b='test-xalloc-die.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-xstrtoimax.sh.log: test-xstrtoimax.sh
+	@p='test-xstrtoimax.sh'; \
+	b='test-xstrtoimax.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test-xstrtol.sh.log: test-xstrtol.sh
+	@p='test-xstrtol.sh'; \
+	b='test-xstrtol.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	$(am__set_b); \
+	$(am__check_pre) $(TEST_LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+distdir-am: $(DISTFILES)
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+	    || exit 1; \
+	  fi; \
+	done
+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
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+	    $(am__make_dryrun) \
+	      || test -d "$(distdir)/$$subdir" \
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+	-rm -f ./$(DEPDIR)/anytostr.Po
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+	-rm -f ./$(DEPDIR)/bind.Po
+	-rm -f ./$(DEPDIR)/connect.Po
+	-rm -f ./$(DEPDIR)/fdopen.Po
+	-rm -f ./$(DEPDIR)/float.Po
+	-rm -f ./$(DEPDIR)/ftruncate.Po
+	-rm -f ./$(DEPDIR)/gettimeofday.Po
+	-rm -f ./$(DEPDIR)/hash-pjw.Po
+	-rm -f ./$(DEPDIR)/imaxtostr.Po
+	-rm -f ./$(DEPDIR)/inet_pton.Po
+	-rm -f ./$(DEPDIR)/inttostr.Po
+	-rm -f ./$(DEPDIR)/ioctl.Po
+	-rm -f ./$(DEPDIR)/itold.Po
+	-rm -f ./$(DEPDIR)/listen.Po
+	-rm -f ./$(DEPDIR)/locale.Po
+	-rm -f ./$(DEPDIR)/localename-table.Po
+	-rm -f ./$(DEPDIR)/localename.Po
+	-rm -f ./$(DEPDIR)/nanosleep.Po
+	-rm -f ./$(DEPDIR)/offtostr.Po
+	-rm -f ./$(DEPDIR)/perror.Po
+	-rm -f ./$(DEPDIR)/printf-args.Po
+	-rm -f ./$(DEPDIR)/printf-parse.Po
+	-rm -f ./$(DEPDIR)/pthread-thread.Po
+	-rm -f ./$(DEPDIR)/pthread_sigmask.Po
+	-rm -f ./$(DEPDIR)/putenv.Po
+	-rm -f ./$(DEPDIR)/select.Po
+	-rm -f ./$(DEPDIR)/setenv.Po
+	-rm -f ./$(DEPDIR)/setlocale.Po
+	-rm -f ./$(DEPDIR)/setsockopt.Po
+	-rm -f ./$(DEPDIR)/sig-handler.Po
+	-rm -f ./$(DEPDIR)/sigaction.Po
+	-rm -f ./$(DEPDIR)/sigprocmask.Po
+	-rm -f ./$(DEPDIR)/sleep.Po
+	-rm -f ./$(DEPDIR)/snprintf.Po
+	-rm -f ./$(DEPDIR)/socket.Po
+	-rm -f ./$(DEPDIR)/sockets.Po
+	-rm -f ./$(DEPDIR)/strerror_r.Po
+	-rm -f ./$(DEPDIR)/symlink.Po
+	-rm -f ./$(DEPDIR)/sys_socket.Po
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+	-rm -f ./$(DEPDIR)/test-strstr.Po
+	-rm -f ./$(DEPDIR)/test-strtoimax.Po
+	-rm -f ./$(DEPDIR)/test-strtoll.Po
+	-rm -f ./$(DEPDIR)/test-strtoull.Po
+	-rm -f ./$(DEPDIR)/test-strtoumax.Po
+	-rm -f ./$(DEPDIR)/test-symlink.Po
+	-rm -f ./$(DEPDIR)/test-sys_ioctl.Po
+	-rm -f ./$(DEPDIR)/test-sys_select.Po
+	-rm -f ./$(DEPDIR)/test-sys_socket.Po
+	-rm -f ./$(DEPDIR)/test-sys_stat.Po
+	-rm -f ./$(DEPDIR)/test-sys_time.Po
+	-rm -f ./$(DEPDIR)/test-sys_types.Po
+	-rm -f ./$(DEPDIR)/test-sys_uio.Po
+	-rm -f ./$(DEPDIR)/test-thread_create.Po
+	-rm -f ./$(DEPDIR)/test-thread_self.Po
+	-rm -f ./$(DEPDIR)/test-time.Po
+	-rm -f ./$(DEPDIR)/test-unistd.Po
+	-rm -f ./$(DEPDIR)/test-unsetenv.Po
+	-rm -f ./$(DEPDIR)/test-vasnprintf.Po
+	-rm -f ./$(DEPDIR)/test-verify-try.Po
+	-rm -f ./$(DEPDIR)/test-verify.Po
+	-rm -f ./$(DEPDIR)/test-version-etc.Po
+	-rm -f ./$(DEPDIR)/test-wchar.Po
+	-rm -f ./$(DEPDIR)/test-wcrtomb-w32.Po
+	-rm -f ./$(DEPDIR)/test-wcrtomb.Po
+	-rm -f ./$(DEPDIR)/test-wctype-h.Po
+	-rm -f ./$(DEPDIR)/test-wcwidth.Po
+	-rm -f ./$(DEPDIR)/test-xalloc-die.Po
+	-rm -f ./$(DEPDIR)/test-xstrtoimax.Po
+	-rm -f ./$(DEPDIR)/test-xstrtol.Po
+	-rm -f ./$(DEPDIR)/test-xstrtoul.Po
+	-rm -f ./$(DEPDIR)/uinttostr.Po
+	-rm -f ./$(DEPDIR)/umaxtostr.Po
+	-rm -f ./$(DEPDIR)/unsetenv.Po
+	-rm -f ./$(DEPDIR)/vasnprintf.Po
+	-rm -f ./$(DEPDIR)/windows-thread.Po
+	-rm -f ./$(DEPDIR)/windows-tls.Po
+	-rm -f ./$(DEPDIR)/xsize.Po
+	-rm -f ./$(DEPDIR)/xstrtol-error.Po
+	-rm -f glthread/$(DEPDIR)/thread.Po
+	-rm -f unistr/$(DEPDIR)/test-u8-mbtoucr.Po
+	-rm -f unistr/$(DEPDIR)/test-u8-uctomb.Po
+	-rm -f uniwidth/$(DEPDIR)/test-uc_width.Po
+	-rm -f uniwidth/$(DEPDIR)/test-uc_width2.Po
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-local
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: $(am__recursive_targets) all check check-am install install-am \
+	install-exec install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am \
+	am--depfiles check check-TESTS check-am clean \
+	clean-checkLIBRARIES clean-checkPROGRAMS clean-generic \
+	clean-local clean-noinstLIBRARIES clean-noinstPROGRAMS \
+	cscopelist-am ctags ctags-am distclean distclean-compile \
+	distclean-generic distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-local pdf pdf-am ps ps-am \
+	recheck tags tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# We need the following in order to create <arpa/inet.h> when the system
+# doesn't have one.
+arpa/inet.h: arpa_inet.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H) $(ARG_NONNULL_H)
+	$(AM_V_at)$(MKDIR_P) arpa
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''HAVE_FEATURES_H''@|$(HAVE_FEATURES_H)|g' \
+	      -e 's|@''NEXT_ARPA_INET_H''@|$(NEXT_ARPA_INET_H)|g' \
+	      -e 's|@''HAVE_ARPA_INET_H''@|$(HAVE_ARPA_INET_H)|g' \
+	      -e 's/@''GNULIB_INET_NTOP''@/$(GL_GNULIB_INET_NTOP)/g' \
+	      -e 's/@''GNULIB_INET_PTON''@/$(GL_GNULIB_INET_PTON)/g' \
+	      -e 's|@''HAVE_WS2TCPIP_H''@|$(HAVE_WS2TCPIP_H)|g' \
+	      -e 's|@''HAVE_DECL_INET_NTOP''@|$(HAVE_DECL_INET_NTOP)|g' \
+	      -e 's|@''HAVE_DECL_INET_PTON''@|$(HAVE_DECL_INET_PTON)|g' \
+	      -e 's|@''REPLACE_INET_NTOP''@|$(REPLACE_INET_NTOP)|g' \
+	      -e 's|@''REPLACE_INET_PTON''@|$(REPLACE_INET_PTON)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/arpa_inet.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <float.h> when the system
+# doesn't have one that works with the given compiler.
+@GL_GENERATE_FLOAT_H_TRUE@float.h: float.in.h $(top_builddir)/config.status
+@GL_GENERATE_FLOAT_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_FLOAT_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+@GL_GENERATE_FLOAT_H_TRUE@	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+@GL_GENERATE_FLOAT_H_TRUE@	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+@GL_GENERATE_FLOAT_H_TRUE@	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+@GL_GENERATE_FLOAT_H_TRUE@	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+@GL_GENERATE_FLOAT_H_TRUE@	      -e 's|@''NEXT_FLOAT_H''@|$(NEXT_FLOAT_H)|g' \
+@GL_GENERATE_FLOAT_H_TRUE@	      -e 's|@''REPLACE_ITOLD''@|$(REPLACE_ITOLD)|g' \
+@GL_GENERATE_FLOAT_H_TRUE@	      < $(srcdir)/float.in.h; \
+@GL_GENERATE_FLOAT_H_TRUE@	} > $@-t && \
+@GL_GENERATE_FLOAT_H_TRUE@	mv $@-t $@
+@GL_GENERATE_FLOAT_H_FALSE@float.h: $(top_builddir)/config.status
+@GL_GENERATE_FLOAT_H_FALSE@	rm -f $@
+
+# We need the following in order to create <netinet/in.h> when the system
+# doesn't have one.
+@GL_GENERATE_NETINET_IN_H_TRUE@netinet/in.h: netinet_in.in.h $(top_builddir)/config.status
+@GL_GENERATE_NETINET_IN_H_TRUE@	$(AM_V_at)$(MKDIR_P) netinet
+@GL_GENERATE_NETINET_IN_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_NETINET_IN_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+@GL_GENERATE_NETINET_IN_H_TRUE@	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+@GL_GENERATE_NETINET_IN_H_TRUE@	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+@GL_GENERATE_NETINET_IN_H_TRUE@	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+@GL_GENERATE_NETINET_IN_H_TRUE@	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+@GL_GENERATE_NETINET_IN_H_TRUE@	      -e 's|@''NEXT_NETINET_IN_H''@|$(NEXT_NETINET_IN_H)|g' \
+@GL_GENERATE_NETINET_IN_H_TRUE@	      -e 's|@''HAVE_NETINET_IN_H''@|$(HAVE_NETINET_IN_H)|g' \
+@GL_GENERATE_NETINET_IN_H_TRUE@	      < $(srcdir)/netinet_in.in.h; \
+@GL_GENERATE_NETINET_IN_H_TRUE@	} > $@-t && \
+@GL_GENERATE_NETINET_IN_H_TRUE@	mv $@-t $@
+@GL_GENERATE_NETINET_IN_H_FALSE@netinet/in.h: $(top_builddir)/config.status
+@GL_GENERATE_NETINET_IN_H_FALSE@	rm -f $@
+
+# We need the following in order to create <pthread.h> when the system
+# doesn't have one that works with the given compiler.
+pthread.h: pthread.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(_NORETURN_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_PTHREAD_H''@|$(HAVE_PTHREAD_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_PTHREAD_H''@|$(NEXT_PTHREAD_H)|g' \
+	      -e 's/@''GNULIB_PTHREAD_THREAD''@/$(GL_GNULIB_PTHREAD_THREAD)/g' \
+	      -e 's/@''GNULIB_PTHREAD_ONCE''@/$(GL_GNULIB_PTHREAD_ONCE)/g' \
+	      -e 's/@''GNULIB_PTHREAD_MUTEX''@/$(GL_GNULIB_PTHREAD_MUTEX)/g' \
+	      -e 's/@''GNULIB_PTHREAD_RWLOCK''@/$(GL_GNULIB_PTHREAD_RWLOCK)/g' \
+	      -e 's/@''GNULIB_PTHREAD_COND''@/$(GL_GNULIB_PTHREAD_COND)/g' \
+	      -e 's/@''GNULIB_PTHREAD_TSS''@/$(GL_GNULIB_PTHREAD_TSS)/g' \
+	      -e 's/@''GNULIB_PTHREAD_SPIN''@/$(GL_GNULIB_PTHREAD_SPIN)/g' \
+	      -e 's/@''GNULIB_PTHREAD_MUTEX_TIMEDLOCK''@/$(GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK)/g' \
+	      -e 's|@''HAVE_PTHREAD_T''@|$(HAVE_PTHREAD_T)|g' \
+	      -e 's|@''HAVE_PTHREAD_SPINLOCK_T''@|$(HAVE_PTHREAD_SPINLOCK_T)|g' \
+	      -e 's|@''HAVE_PTHREAD_CREATE_DETACHED''@|$(HAVE_PTHREAD_CREATE_DETACHED)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_RECURSIVE''@|$(HAVE_PTHREAD_MUTEX_RECURSIVE)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_ROBUST''@|$(HAVE_PTHREAD_MUTEX_ROBUST)|g' \
+	      -e 's|@''HAVE_PTHREAD_PROCESS_SHARED''@|$(HAVE_PTHREAD_PROCESS_SHARED)|g' \
+	      -e 's|@''HAVE_PTHREAD_CREATE''@|$(HAVE_PTHREAD_CREATE)|g' \
+	      -e 's|@''HAVE_PTHREAD_ATTR_INIT''@|$(HAVE_PTHREAD_ATTR_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_ATTR_GETDETACHSTATE''@|$(HAVE_PTHREAD_ATTR_GETDETACHSTATE)|g' \
+	      -e 's|@''HAVE_PTHREAD_ATTR_SETDETACHSTATE''@|$(HAVE_PTHREAD_ATTR_SETDETACHSTATE)|g' \
+	      -e 's|@''HAVE_PTHREAD_ATTR_DESTROY''@|$(HAVE_PTHREAD_ATTR_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_SELF''@|$(HAVE_PTHREAD_SELF)|g' \
+	      -e 's|@''HAVE_PTHREAD_EQUAL''@|$(HAVE_PTHREAD_EQUAL)|g' \
+	      -e 's|@''HAVE_PTHREAD_DETACH''@|$(HAVE_PTHREAD_DETACH)|g' \
+	      -e 's|@''HAVE_PTHREAD_JOIN''@|$(HAVE_PTHREAD_JOIN)|g' \
+	      -e 's|@''HAVE_PTHREAD_EXIT''@|$(HAVE_PTHREAD_EXIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_ONCE''@|$(HAVE_PTHREAD_ONCE)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_INIT''@|$(HAVE_PTHREAD_MUTEX_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEXATTR_INIT''@|$(HAVE_PTHREAD_MUTEXATTR_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEXATTR_GETTYPE''@|$(HAVE_PTHREAD_MUTEXATTR_GETTYPE)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEXATTR_SETTYPE''@|$(HAVE_PTHREAD_MUTEXATTR_SETTYPE)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEXATTR_GETROBUST''@|$(HAVE_PTHREAD_MUTEXATTR_GETROBUST)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEXATTR_SETROBUST''@|$(HAVE_PTHREAD_MUTEXATTR_SETROBUST)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEXATTR_DESTROY''@|$(HAVE_PTHREAD_MUTEXATTR_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_LOCK''@|$(HAVE_PTHREAD_MUTEX_LOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_TRYLOCK''@|$(HAVE_PTHREAD_MUTEX_TRYLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_TIMEDLOCK''@|$(HAVE_PTHREAD_MUTEX_TIMEDLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_UNLOCK''@|$(HAVE_PTHREAD_MUTEX_UNLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_DESTROY''@|$(HAVE_PTHREAD_MUTEX_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_INIT''@|$(HAVE_PTHREAD_RWLOCK_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCKATTR_INIT''@|$(HAVE_PTHREAD_RWLOCKATTR_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCKATTR_DESTROY''@|$(HAVE_PTHREAD_RWLOCKATTR_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_RDLOCK''@|$(HAVE_PTHREAD_RWLOCK_RDLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_WRLOCK''@|$(HAVE_PTHREAD_RWLOCK_WRLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_TRYRDLOCK''@|$(HAVE_PTHREAD_RWLOCK_TRYRDLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_TRYWRLOCK''@|$(HAVE_PTHREAD_RWLOCK_TRYWRLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK''@|$(HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK''@|$(HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_UNLOCK''@|$(HAVE_PTHREAD_RWLOCK_UNLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_DESTROY''@|$(HAVE_PTHREAD_RWLOCK_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_COND_INIT''@|$(HAVE_PTHREAD_COND_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_CONDATTR_INIT''@|$(HAVE_PTHREAD_CONDATTR_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_CONDATTR_DESTROY''@|$(HAVE_PTHREAD_CONDATTR_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_COND_WAIT''@|$(HAVE_PTHREAD_COND_WAIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_COND_TIMEDWAIT''@|$(HAVE_PTHREAD_COND_TIMEDWAIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_COND_SIGNAL''@|$(HAVE_PTHREAD_COND_SIGNAL)|g' \
+	      -e 's|@''HAVE_PTHREAD_COND_BROADCAST''@|$(HAVE_PTHREAD_COND_BROADCAST)|g' \
+	      -e 's|@''HAVE_PTHREAD_COND_DESTROY''@|$(HAVE_PTHREAD_COND_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_KEY_CREATE''@|$(HAVE_PTHREAD_KEY_CREATE)|g' \
+	      -e 's|@''HAVE_PTHREAD_SETSPECIFIC''@|$(HAVE_PTHREAD_SETSPECIFIC)|g' \
+	      -e 's|@''HAVE_PTHREAD_GETSPECIFIC''@|$(HAVE_PTHREAD_GETSPECIFIC)|g' \
+	      -e 's|@''HAVE_PTHREAD_KEY_DELETE''@|$(HAVE_PTHREAD_KEY_DELETE)|g' \
+	      -e 's|@''HAVE_PTHREAD_SPIN_INIT''@|$(HAVE_PTHREAD_SPIN_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_SPIN_LOCK''@|$(HAVE_PTHREAD_SPIN_LOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_SPIN_TRYLOCK''@|$(HAVE_PTHREAD_SPIN_TRYLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_SPIN_UNLOCK''@|$(HAVE_PTHREAD_SPIN_UNLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_SPIN_DESTROY''@|$(HAVE_PTHREAD_SPIN_DESTROY)|g' \
+	      < $(srcdir)/pthread.in.h | \
+	  sed -e 's|@''REPLACE_PTHREAD_CREATE''@|$(REPLACE_PTHREAD_CREATE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_ATTR_INIT''@|$(REPLACE_PTHREAD_ATTR_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_ATTR_GETDETACHSTATE''@|$(REPLACE_PTHREAD_ATTR_GETDETACHSTATE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_ATTR_SETDETACHSTATE''@|$(REPLACE_PTHREAD_ATTR_SETDETACHSTATE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_ATTR_DESTROY''@|$(REPLACE_PTHREAD_ATTR_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SELF''@|$(REPLACE_PTHREAD_SELF)|g' \
+	      -e 's|@''REPLACE_PTHREAD_EQUAL''@|$(REPLACE_PTHREAD_EQUAL)|g' \
+	      -e 's|@''REPLACE_PTHREAD_DETACH''@|$(REPLACE_PTHREAD_DETACH)|g' \
+	      -e 's|@''REPLACE_PTHREAD_JOIN''@|$(REPLACE_PTHREAD_JOIN)|g' \
+	      -e 's|@''REPLACE_PTHREAD_EXIT''@|$(REPLACE_PTHREAD_EXIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_ONCE''@|$(REPLACE_PTHREAD_ONCE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEX_INIT''@|$(REPLACE_PTHREAD_MUTEX_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEXATTR_INIT''@|$(REPLACE_PTHREAD_MUTEXATTR_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEXATTR_GETTYPE''@|$(REPLACE_PTHREAD_MUTEXATTR_GETTYPE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEXATTR_SETTYPE''@|$(REPLACE_PTHREAD_MUTEXATTR_SETTYPE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEXATTR_GETROBUST''@|$(REPLACE_PTHREAD_MUTEXATTR_GETROBUST)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEXATTR_SETROBUST''@|$(REPLACE_PTHREAD_MUTEXATTR_SETROBUST)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEXATTR_DESTROY''@|$(REPLACE_PTHREAD_MUTEXATTR_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEX_LOCK''@|$(REPLACE_PTHREAD_MUTEX_LOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEX_TRYLOCK''@|$(REPLACE_PTHREAD_MUTEX_TRYLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEX_TIMEDLOCK''@|$(REPLACE_PTHREAD_MUTEX_TIMEDLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEX_UNLOCK''@|$(REPLACE_PTHREAD_MUTEX_UNLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEX_DESTROY''@|$(REPLACE_PTHREAD_MUTEX_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_INIT''@|$(REPLACE_PTHREAD_RWLOCK_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCKATTR_INIT''@|$(REPLACE_PTHREAD_RWLOCKATTR_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCKATTR_DESTROY''@|$(REPLACE_PTHREAD_RWLOCKATTR_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_RDLOCK''@|$(REPLACE_PTHREAD_RWLOCK_RDLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_WRLOCK''@|$(REPLACE_PTHREAD_RWLOCK_WRLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_TRYRDLOCK''@|$(REPLACE_PTHREAD_RWLOCK_TRYRDLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_TRYWRLOCK''@|$(REPLACE_PTHREAD_RWLOCK_TRYWRLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK''@|$(REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK''@|$(REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_UNLOCK''@|$(REPLACE_PTHREAD_RWLOCK_UNLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_DESTROY''@|$(REPLACE_PTHREAD_RWLOCK_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_COND_INIT''@|$(REPLACE_PTHREAD_COND_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_CONDATTR_INIT''@|$(REPLACE_PTHREAD_CONDATTR_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_CONDATTR_DESTROY''@|$(REPLACE_PTHREAD_CONDATTR_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_COND_WAIT''@|$(REPLACE_PTHREAD_COND_WAIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_COND_TIMEDWAIT''@|$(REPLACE_PTHREAD_COND_TIMEDWAIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_COND_SIGNAL''@|$(REPLACE_PTHREAD_COND_SIGNAL)|g' \
+	      -e 's|@''REPLACE_PTHREAD_COND_BROADCAST''@|$(REPLACE_PTHREAD_COND_BROADCAST)|g' \
+	      -e 's|@''REPLACE_PTHREAD_COND_DESTROY''@|$(REPLACE_PTHREAD_COND_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_KEY_CREATE''@|$(REPLACE_PTHREAD_KEY_CREATE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SETSPECIFIC''@|$(REPLACE_PTHREAD_SETSPECIFIC)|g' \
+	      -e 's|@''REPLACE_PTHREAD_GETSPECIFIC''@|$(REPLACE_PTHREAD_GETSPECIFIC)|g' \
+	      -e 's|@''REPLACE_PTHREAD_KEY_DELETE''@|$(REPLACE_PTHREAD_KEY_DELETE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SPIN_INIT''@|$(REPLACE_PTHREAD_SPIN_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SPIN_LOCK''@|$(REPLACE_PTHREAD_SPIN_LOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SPIN_TRYLOCK''@|$(REPLACE_PTHREAD_SPIN_TRYLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SPIN_UNLOCK''@|$(REPLACE_PTHREAD_SPIN_UNLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SPIN_DESTROY''@|$(REPLACE_PTHREAD_SPIN_DESTROY)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _Noreturn/r $(_NORETURN_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create a replacement for <sched.h> when
+# the system doesn't have one.
+sched.h: sched.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_SCHED_H''@|$(HAVE_SCHED_H)|g' \
+	      -e 's|@''HAVE_SYS_CDEFS_H''@|$(HAVE_SYS_CDEFS_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SCHED_H''@|$(NEXT_SCHED_H)|g' \
+	      -e 's|@''HAVE_STRUCT_SCHED_PARAM''@|$(HAVE_STRUCT_SCHED_PARAM)|g' \
+	      -e 's/@''GNULIB_SCHED_YIELD''@/$(GL_GNULIB_SCHED_YIELD)/g' \
+	      -e 's|@''HAVE_SCHED_YIELD''@|$(HAVE_SCHED_YIELD)|g' \
+	      -e 's|@''REPLACE_SCHED_YIELD''@|$(REPLACE_SCHED_YIELD)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/sched.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <sys/ioctl.h> when the system
+# does not have a complete one.
+sys/ioctl.h: sys_ioctl.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_SYS_IOCTL_H''@|$(HAVE_SYS_IOCTL_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_IOCTL_H''@|$(NEXT_SYS_IOCTL_H)|g' \
+	      -e 's/@''GNULIB_IOCTL''@/$(GL_GNULIB_IOCTL)/g' \
+	      -e 's|@''SYS_IOCTL_H_HAVE_WINSOCK2_H''@|$(SYS_IOCTL_H_HAVE_WINSOCK2_H)|g' \
+	      -e 's|@''SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS''@|$(SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS)|g' \
+	      -e 's|@''REPLACE_IOCTL''@|$(REPLACE_IOCTL)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/sys_ioctl.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <sys/select.h> when the system
+# doesn't have one that works with the given compiler.
+sys/select.h: sys_select.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_SELECT_H''@|$(NEXT_SYS_SELECT_H)|g' \
+	      -e 's|@''HAVE_SYS_SELECT_H''@|$(HAVE_SYS_SELECT_H)|g' \
+	      -e 's/@''GNULIB_PSELECT''@/$(GL_GNULIB_PSELECT)/g' \
+	      -e 's/@''GNULIB_SELECT''@/$(GL_GNULIB_SELECT)/g' \
+	      -e 's|@''HAVE_WINSOCK2_H''@|$(HAVE_WINSOCK2_H)|g' \
+	      -e 's|@''HAVE_PSELECT''@|$(HAVE_PSELECT)|g' \
+	      -e 's|@''REPLACE_PSELECT''@|$(REPLACE_PSELECT)|g' \
+	      -e 's|@''REPLACE_SELECT''@|$(REPLACE_SELECT)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/sys_select.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <sys/socket.h> when the system
+# doesn't have one that works with the given compiler.
+sys/socket.h: sys_socket.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H) $(ARG_NONNULL_H)
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_SOCKET_H''@|$(NEXT_SYS_SOCKET_H)|g' \
+	      -e 's|@''HAVE_SYS_SOCKET_H''@|$(HAVE_SYS_SOCKET_H)|g' \
+	      -e 's/@''GNULIB_CLOSE''@/$(GL_GNULIB_CLOSE)/g' \
+	      -e 's/@''GNULIB_SOCKET''@/$(GL_GNULIB_SOCKET)/g' \
+	      -e 's/@''GNULIB_CONNECT''@/$(GL_GNULIB_CONNECT)/g' \
+	      -e 's/@''GNULIB_ACCEPT''@/$(GL_GNULIB_ACCEPT)/g' \
+	      -e 's/@''GNULIB_BIND''@/$(GL_GNULIB_BIND)/g' \
+	      -e 's/@''GNULIB_GETPEERNAME''@/$(GL_GNULIB_GETPEERNAME)/g' \
+	      -e 's/@''GNULIB_GETSOCKNAME''@/$(GL_GNULIB_GETSOCKNAME)/g' \
+	      -e 's/@''GNULIB_GETSOCKOPT''@/$(GL_GNULIB_GETSOCKOPT)/g' \
+	      -e 's/@''GNULIB_LISTEN''@/$(GL_GNULIB_LISTEN)/g' \
+	      -e 's/@''GNULIB_RECV''@/$(GL_GNULIB_RECV)/g' \
+	      -e 's/@''GNULIB_SEND''@/$(GL_GNULIB_SEND)/g' \
+	      -e 's/@''GNULIB_RECVFROM''@/$(GL_GNULIB_RECVFROM)/g' \
+	      -e 's/@''GNULIB_SENDTO''@/$(GL_GNULIB_SENDTO)/g' \
+	      -e 's/@''GNULIB_SETSOCKOPT''@/$(GL_GNULIB_SETSOCKOPT)/g' \
+	      -e 's/@''GNULIB_SHUTDOWN''@/$(GL_GNULIB_SHUTDOWN)/g' \
+	      -e 's/@''GNULIB_ACCEPT4''@/$(GL_GNULIB_ACCEPT4)/g' \
+	      -e 's|@''HAVE_WINSOCK2_H''@|$(HAVE_WINSOCK2_H)|g' \
+	      -e 's|@''HAVE_WS2TCPIP_H''@|$(HAVE_WS2TCPIP_H)|g' \
+	      -e 's|@''HAVE_STRUCT_SOCKADDR_STORAGE''@|$(HAVE_STRUCT_SOCKADDR_STORAGE)|g' \
+	      -e 's|@''HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY''@|$(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY)|g' \
+	      -e 's|@''HAVE_SA_FAMILY_T''@|$(HAVE_SA_FAMILY_T)|g' \
+	      -e 's|@''HAVE_ACCEPT4''@|$(HAVE_ACCEPT4)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/sys_socket.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+# We need the following in order to create <sys/time.h> when the system
+# doesn't have one that works with the given compiler.
+sys/time.h: sys_time.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's/@''HAVE_SYS_TIME_H''@/$(HAVE_SYS_TIME_H)/g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_TIME_H''@|$(NEXT_SYS_TIME_H)|g' \
+	      -e 's/@''GNULIB_GETTIMEOFDAY''@/$(GL_GNULIB_GETTIMEOFDAY)/g' \
+	      -e 's|@''HAVE_WINSOCK2_H''@|$(HAVE_WINSOCK2_H)|g' \
+	      -e 's/@''HAVE_GETTIMEOFDAY''@/$(HAVE_GETTIMEOFDAY)/g' \
+	      -e 's/@''HAVE_STRUCT_TIMEVAL''@/$(HAVE_STRUCT_TIMEVAL)/g' \
+	      -e 's/@''REPLACE_GETTIMEOFDAY''@/$(REPLACE_GETTIMEOFDAY)/g' \
+	      -e 's/@''REPLACE_STRUCT_TIMEVAL''@/$(REPLACE_STRUCT_TIMEVAL)/g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/sys_time.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <sys/uio.h> when the system
+# doesn't have one that works with the given compiler.
+sys/uio.h: sys_uio.in.h $(top_builddir)/config.status
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_UIO_H''@|$(NEXT_SYS_UIO_H)|g' \
+	      -e 's|@''HAVE_SYS_UIO_H''@|$(HAVE_SYS_UIO_H)|g' \
+	      < $(srcdir)/sys_uio.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+all: all-notice
+all-notice:
+	@echo '## ---------------------------------------------------- ##'
+	@echo '## ------------------- Gnulib tests ------------------- ##'
+	@echo '## You can ignore compiler warnings in this directory.  ##'
+	@echo '## ---------------------------------------------------- ##'
+
+check-am: check-notice
+check-notice:
+	@echo '## ---------------------------------------------------------------------- ##'
+	@echo '## ---------------------------- Gnulib tests ---------------------------- ##'
+	@echo '## Please report test failures in this directory to <bug-gnulib@gnu.org>. ##'
+	@echo '## ---------------------------------------------------------------------- ##'
+
+# Clean up after Solaris cc.
+clean-local:
+	rm -rf SunWS_cache
+
+mostlyclean-local: mostlyclean-generic
+	@for dir in '' $(MOSTLYCLEANDIRS); do \
+	  if test -n "$$dir" && test -d $$dir; then \
+	    echo "rmdir $$dir"; rmdir $$dir; \
+	  fi; \
+	done; \
+	:
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/grep/gnulib-tests/_Noreturn.h b/src/grep/gnulib-tests/_Noreturn.h
new file mode 100644
index 0000000..cb72f26
--- /dev/null
+++ b/src/grep/gnulib-tests/_Noreturn.h
@@ -0,0 +1,45 @@
+/* A C macro for declaring that a function does not return.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _Noreturn
+# if (defined __cplusplus \
+      && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
+          || (defined _MSC_VER && 1900 <= _MSC_VER)) \
+      && 0)
+    /* [[noreturn]] is not practically usable, because with it the syntax
+         extern _Noreturn void func (...);
+       would not be valid; such a declaration would only be valid with 'extern'
+       and '_Noreturn' swapped, or without the 'extern' keyword.  However, some
+       AIX system header files and several gnulib header files use precisely
+       this syntax with 'extern'.  */
+#  define _Noreturn [[noreturn]]
+# elif ((!defined __cplusplus || defined __clang__) \
+        && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
+            || (!defined __STRICT_ANSI__ \
+                && (__4 < __GNUC__ + (7 <= __GNUC_MINOR__) \
+                    || (defined __apple_build_version__ \
+                        ? 6000000 <= __apple_build_version__ \
+                        : 3 < __clang_major__ + (5 <= __clang_minor__))))))
+   /* _Noreturn works as-is.  */
+# elif (2 < __GNUC__ + (8 <= __GNUC_MINOR__) || defined __clang__ \
+        || 0x5110 <= __SUNPRO_C)
+#  define _Noreturn __attribute__ ((__noreturn__))
+# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
+#  define _Noreturn __declspec (noreturn)
+# else
+#  define _Noreturn
+# endif
+#endif
diff --git a/src/grep/gnulib-tests/accept.c b/src/grep/gnulib-tests/accept.c
new file mode 100644
index 0000000..71457db
--- /dev/null
+++ b/src/grep/gnulib-tests/accept.c
@@ -0,0 +1,52 @@
+/* accept.c --- wrappers for Windows accept function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef accept
+
+int
+rpl_accept (int fd, struct sockaddr *addr, socklen_t *addrlen)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      SOCKET fh = accept (sock, addr, addrlen);
+      if (fh == INVALID_SOCKET)
+        {
+          set_winsock_errno ();
+          return -1;
+        }
+      else
+        return SOCKET_TO_FD (fh);
+    }
+}
diff --git a/src/grep/gnulib-tests/altstack-util.h b/src/grep/gnulib-tests/altstack-util.h
new file mode 100644
index 0000000..fbd0d13
--- /dev/null
+++ b/src/grep/gnulib-tests/altstack-util.h
@@ -0,0 +1,66 @@
+/* Some auxiliary stuff for defining an alternate stack.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake and Bruno Haible.  */
+
+#include <stdint.h> /* uintptr_t */
+#include <string.h> /* for memset */
+
+#define MYSTACK_SIZE (1 << 24)
+
+/* glibc says: Users should use SIGSTKSZ as the size of user-supplied
+   buffers.  We want to detect stack overflow of the alternate stack
+   in a nicer manner than just crashing, so we overallocate in
+   comparison to what we hand libsigsegv.  Also, we intentionally hand
+   an unaligned pointer, to ensure the alternate stack still ends up
+   aligned.  */
+#define MYSTACK_CRUMPLE_ZONE 8192
+static char mystack_storage[MYSTACK_SIZE + 2 * MYSTACK_CRUMPLE_ZONE + 31];
+static char *mystack; /* MYSTACK_SIZE bytes in the middle of storage. */
+
+static void
+prepare_alternate_stack (void)
+{
+#ifdef SIGSTKSZ
+  if (MYSTACK_SIZE < SIGSTKSZ)
+    {
+      size_t size = SIGSTKSZ;
+      printf ("SIGSTKSZ=%zu exceeds MYSTACK_SIZE=%d\n", size, MYSTACK_SIZE);
+      exit (1);
+    }
+#endif
+  memset (mystack_storage, 's', sizeof mystack_storage);
+  mystack = (char *) ((uintptr_t) (mystack_storage + MYSTACK_CRUMPLE_ZONE) | 31);
+}
+
+static void
+check_alternate_stack_no_overflow (void)
+{
+  unsigned int i;
+
+  for (i = MYSTACK_CRUMPLE_ZONE; i > 0; i--)
+    if (*(mystack - i) != 's')
+      {
+        printf ("Alternate stack was exceeded by %u bytes!!\n", i);
+        exit (1);
+      }
+  for (i = MYSTACK_CRUMPLE_ZONE; i > 0; i--)
+    if (*(mystack + MYSTACK_SIZE - 1 + i) != 's')
+      {
+        printf ("Alternate stack was exceeded by %u bytes!!\n", i);
+        exit (1);
+      }
+}
diff --git a/src/grep/gnulib-tests/anytostr.c b/src/grep/gnulib-tests/anytostr.c
new file mode 100644
index 0000000..8294353
--- /dev/null
+++ b/src/grep/gnulib-tests/anytostr.c
@@ -0,0 +1,57 @@
+/* anytostr.c -- convert integers to printable strings
+
+   Copyright (C) 2001, 2006, 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert */
+
+/* Tell gcc not to warn about the (i < 0) test, below.  */
+#if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__
+# pragma GCC diagnostic ignored "-Wtype-limits"
+#elif defined __clang__
+# pragma clang diagnostic ignored "-Wtautological-compare"
+#endif
+
+#include <config.h>
+
+#include "inttostr.h"
+
+/* Convert I to a printable string in BUF, which must be at least
+   INT_BUFSIZE_BOUND (INTTYPE) bytes long.  Return the address of the
+   printable string, which need not start at BUF.  */
+
+_GL_ATTRIBUTE_NODISCARD char *
+anytostr (inttype i, char *buf)
+{
+  char *p = buf + INT_STRLEN_BOUND (inttype);
+  *p = 0;
+
+  if (i < 0)
+    {
+      do
+        *--p = '0' - i % 10;
+      while ((i /= 10) != 0);
+
+      *--p = '-';
+    }
+  else
+    {
+      do
+        *--p = '0' + i % 10;
+      while ((i /= 10) != 0);
+    }
+
+  return p;
+}
diff --git a/src/grep/gnulib-tests/arg-nonnull.h b/src/grep/gnulib-tests/arg-nonnull.h
new file mode 100644
index 0000000..b4de241
--- /dev/null
+++ b/src/grep/gnulib-tests/arg-nonnull.h
@@ -0,0 +1,26 @@
+/* A C macro for declaring that specific arguments must not be NULL.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools
+   that the values passed as arguments n, ..., m must be non-NULL pointers.
+   n = 1 stands for the first argument, n = 2 for the second argument etc.  */
+#ifndef _GL_ARG_NONNULL
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || defined __clang__
+#  define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params))
+# else
+#  define _GL_ARG_NONNULL(params)
+# endif
+#endif
diff --git a/src/grep/gnulib-tests/arpa_inet.in.h b/src/grep/gnulib-tests/arpa_inet.in.h
new file mode 100644
index 0000000..9968067
--- /dev/null
+++ b/src/grep/gnulib-tests/arpa_inet.in.h
@@ -0,0 +1,150 @@
+/* A GNU-like <arpa/inet.h>.
+
+   Copyright (C) 2005-2006, 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _@GUARD_PREFIX@_ARPA_INET_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if @HAVE_FEATURES_H@
+# include <features.h> /* for __GLIBC__ */
+#endif
+
+/* Gnulib's sys/socket.h is responsible for defining socklen_t (used below) and
+   for pulling in winsock2.h etc. under MinGW.
+   But avoid namespace pollution on glibc systems.  */
+#ifndef __GLIBC__
+# include <sys/socket.h>
+#endif
+
+/* On NonStop Kernel, inet_ntop and inet_pton are declared in <netdb.h>.
+   But avoid namespace pollution on glibc systems.  */
+#if defined __TANDEM && !defined __GLIBC__
+# include <netdb.h>
+#endif
+
+#if @HAVE_ARPA_INET_H@
+
+/* The include_next requires a split double-inclusion guard.  */
+# @INCLUDE_NEXT@ @NEXT_ARPA_INET_H@
+
+#endif
+
+#ifndef _@GUARD_PREFIX@_ARPA_INET_H
+#define _@GUARD_PREFIX@_ARPA_INET_H
+
+/* Get all possible declarations of inet_ntop() and inet_pton().  */
+#if (@GNULIB_INET_NTOP@ || @GNULIB_INET_PTON@ || defined GNULIB_POSIXCHECK) \
+    && @HAVE_WS2TCPIP_H@
+# include <ws2tcpip.h>
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
+#if @GNULIB_INET_NTOP@
+/* Converts an internet address from internal format to a printable,
+   presentable format.
+   AF is an internet address family, such as AF_INET or AF_INET6.
+   SRC points to a 'struct in_addr' (for AF_INET) or 'struct in6_addr'
+   (for AF_INET6).
+   DST points to a buffer having room for CNT bytes.
+   The printable representation of the address (in numeric form, not
+   surrounded by [...], no reverse DNS is done) is placed in DST, and
+   DST is returned.  If an error occurs, the return value is NULL and
+   errno is set.  If CNT bytes are not sufficient to hold the result,
+   the return value is NULL and errno is set to ENOSPC.  A good value
+   for CNT is 46.
+
+   For more details, see the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/inet_ntop.html>.  */
+# if @REPLACE_INET_NTOP@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef inet_ntop
+#   define inet_ntop rpl_inet_ntop
+#  endif
+_GL_FUNCDECL_RPL (inet_ntop, const char *,
+                  (int af, const void *restrict src,
+                   char *restrict dst, socklen_t cnt)
+                  _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_RPL (inet_ntop, const char *,
+                  (int af, const void *restrict src,
+                   char *restrict dst, socklen_t cnt));
+# else
+#  if !@HAVE_DECL_INET_NTOP@
+_GL_FUNCDECL_SYS (inet_ntop, const char *,
+                  (int af, const void *restrict src,
+                   char *restrict dst, socklen_t cnt)
+                  _GL_ARG_NONNULL ((2, 3)));
+#  endif
+/* Need to cast, because on NonStop Kernel, the fourth parameter is
+                                            size_t cnt.  */
+_GL_CXXALIAS_SYS_CAST (inet_ntop, const char *,
+                       (int af, const void *restrict src,
+                        char *restrict dst, socklen_t cnt));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (inet_ntop);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef inet_ntop
+# if HAVE_RAW_DECL_INET_NTOP
+_GL_WARN_ON_USE (inet_ntop, "inet_ntop is unportable - "
+                 "use gnulib module inet_ntop for portability");
+# endif
+#endif
+
+#if @GNULIB_INET_PTON@
+# if @REPLACE_INET_PTON@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef inet_pton
+#   define inet_pton rpl_inet_pton
+#  endif
+_GL_FUNCDECL_RPL (inet_pton, int,
+                  (int af, const char *restrict src, void *restrict dst)
+                  _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_RPL (inet_pton, int,
+                  (int af, const char *restrict src, void *restrict dst));
+# else
+#  if !@HAVE_DECL_INET_PTON@
+_GL_FUNCDECL_SYS (inet_pton, int,
+                  (int af, const char *restrict src, void *restrict dst)
+                  _GL_ARG_NONNULL ((2, 3)));
+#  endif
+_GL_CXXALIAS_SYS (inet_pton, int,
+                  (int af, const char *restrict src, void *restrict dst));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (inet_pton);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef inet_pton
+# if HAVE_RAW_DECL_INET_PTON
+_GL_WARN_ON_USE (inet_pton, "inet_pton is unportable - "
+                 "use gnulib module inet_pton for portability");
+# endif
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_ARPA_INET_H */
+#endif /* _@GUARD_PREFIX@_ARPA_INET_H */
diff --git a/src/grep/gnulib-tests/asnprintf.c b/src/grep/gnulib-tests/asnprintf.c
new file mode 100644
index 0000000..c5367b2
--- /dev/null
+++ b/src/grep/gnulib-tests/asnprintf.c
@@ -0,0 +1,34 @@
+/* Formatted output to strings.
+   Copyright (C) 1999, 2002, 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "vasnprintf.h"
+
+#include <stdarg.h>
+
+char *
+asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...)
+{
+  va_list args;
+  char *result;
+
+  va_start (args, format);
+  result = vasnprintf (resultbuf, lengthp, format, args);
+  va_end (args);
+  return result;
+}
diff --git a/src/grep/gnulib-tests/bind.c b/src/grep/gnulib-tests/bind.c
new file mode 100644
index 0000000..0e47254
--- /dev/null
+++ b/src/grep/gnulib-tests/bind.c
@@ -0,0 +1,49 @@
+/* bind.c --- wrappers for Windows bind function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef bind
+
+int
+rpl_bind (int fd, const struct sockaddr *sockaddr, socklen_t len)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      int r = bind (sock, sockaddr, len);
+      if (r < 0)
+        set_winsock_errno ();
+
+      return r;
+    }
+}
diff --git a/src/grep/gnulib-tests/c++defs.h b/src/grep/gnulib-tests/c++defs.h
new file mode 100644
index 0000000..a47b61a
--- /dev/null
+++ b/src/grep/gnulib-tests/c++defs.h
@@ -0,0 +1,331 @@
+/* C++ compatible function declaration macros.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_CXXDEFS_H
+#define _GL_CXXDEFS_H
+
+/* Begin/end the GNULIB_NAMESPACE namespace.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_BEGIN_NAMESPACE namespace GNULIB_NAMESPACE {
+# define _GL_END_NAMESPACE }
+#else
+# define _GL_BEGIN_NAMESPACE
+# define _GL_END_NAMESPACE
+#endif
+
+/* The three most frequent use cases of these macros are:
+
+   * For providing a substitute for a function that is missing on some
+     platforms, but is declared and works fine on the platforms on which
+     it exists:
+
+       #if @GNULIB_FOO@
+       # if !@HAVE_FOO@
+       _GL_FUNCDECL_SYS (foo, ...);
+       # endif
+       _GL_CXXALIAS_SYS (foo, ...);
+       _GL_CXXALIASWARN (foo);
+       #elif defined GNULIB_POSIXCHECK
+       ...
+       #endif
+
+   * For providing a replacement for a function that exists on all platforms,
+     but is broken/insufficient and needs to be replaced on some platforms:
+
+       #if @GNULIB_FOO@
+       # if @REPLACE_FOO@
+       #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+       #   undef foo
+       #   define foo rpl_foo
+       #  endif
+       _GL_FUNCDECL_RPL (foo, ...);
+       _GL_CXXALIAS_RPL (foo, ...);
+       # else
+       _GL_CXXALIAS_SYS (foo, ...);
+       # endif
+       _GL_CXXALIASWARN (foo);
+       #elif defined GNULIB_POSIXCHECK
+       ...
+       #endif
+
+   * For providing a replacement for a function that exists on some platforms
+     but is broken/insufficient and needs to be replaced on some of them and
+     is additionally either missing or undeclared on some other platforms:
+
+       #if @GNULIB_FOO@
+       # if @REPLACE_FOO@
+       #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+       #   undef foo
+       #   define foo rpl_foo
+       #  endif
+       _GL_FUNCDECL_RPL (foo, ...);
+       _GL_CXXALIAS_RPL (foo, ...);
+       # else
+       #  if !@HAVE_FOO@   or   if !@HAVE_DECL_FOO@
+       _GL_FUNCDECL_SYS (foo, ...);
+       #  endif
+       _GL_CXXALIAS_SYS (foo, ...);
+       # endif
+       _GL_CXXALIASWARN (foo);
+       #elif defined GNULIB_POSIXCHECK
+       ...
+       #endif
+*/
+
+/* _GL_EXTERN_C declaration;
+   performs the declaration with C linkage.  */
+#if defined __cplusplus
+# define _GL_EXTERN_C extern "C"
+#else
+# define _GL_EXTERN_C extern
+#endif
+
+/* _GL_FUNCDECL_RPL (func, rettype, parameters_and_attributes);
+   declares a replacement function, named rpl_func, with the given prototype,
+   consisting of return type, parameters, and attributes.
+   Example:
+     _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
+                                  _GL_ARG_NONNULL ((1)));
+ */
+#define _GL_FUNCDECL_RPL(func,rettype,parameters_and_attributes) \
+  _GL_FUNCDECL_RPL_1 (rpl_##func, rettype, parameters_and_attributes)
+#define _GL_FUNCDECL_RPL_1(rpl_func,rettype,parameters_and_attributes) \
+  _GL_EXTERN_C rettype rpl_func parameters_and_attributes
+
+/* _GL_FUNCDECL_SYS (func, rettype, parameters_and_attributes);
+   declares the system function, named func, with the given prototype,
+   consisting of return type, parameters, and attributes.
+   Example:
+     _GL_FUNCDECL_SYS (open, int, (const char *filename, int flags, ...)
+                                  _GL_ARG_NONNULL ((1)));
+ */
+#define _GL_FUNCDECL_SYS(func,rettype,parameters_and_attributes) \
+  _GL_EXTERN_C rettype func parameters_and_attributes
+
+/* _GL_CXXALIAS_RPL (func, rettype, parameters);
+   declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to rpl_func, if GNULIB_NAMESPACE is defined.
+   Example:
+     _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
+
+   Wrapping rpl_func in an object with an inline conversion operator
+   avoids a reference to rpl_func unless GNULIB_NAMESPACE::func is
+   actually used in the program.  */
+#define _GL_CXXALIAS_RPL(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_1 (func, rpl_##func, rettype, parameters)
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                                \
+    {                                                         \
+      static const struct _gl_ ## func ## _wrapper            \
+      {                                                       \
+        typedef rettype (*type) parameters;                   \
+                                                              \
+        inline operator type () const                         \
+        {                                                     \
+          return ::rpl_func;                                  \
+        }                                                     \
+      } func = {};                                            \
+    }                                                         \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_MDA (func, rettype, parameters);
+   is to be used when func is a Microsoft deprecated alias, on native Windows.
+   It declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to _func, if GNULIB_NAMESPACE is defined.
+   Example:
+     _GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
+ */
+#define _GL_CXXALIAS_MDA(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_1 (func, _##func, rettype, parameters)
+
+/* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters);
+   is like  _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters);
+   except that the C function rpl_func may have a slightly different
+   declaration.  A cast is used to silence the "invalid conversion" error
+   that would otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                                     \
+    {                                                              \
+      static const struct _gl_ ## func ## _wrapper                 \
+      {                                                            \
+        typedef rettype (*type) parameters;                        \
+                                                                   \
+        inline operator type () const                              \
+        {                                                          \
+          return reinterpret_cast<type>(::rpl_func);               \
+        }                                                          \
+      } func = {};                                                 \
+    }                                                              \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_MDA_CAST (func, rettype, parameters);
+   is like  _GL_CXXALIAS_MDA (func, rettype, parameters);
+   except that the C function func may have a slightly different declaration.
+   A cast is used to silence the "invalid conversion" error that would
+   otherwise occur.  */
+#define _GL_CXXALIAS_MDA_CAST(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_CAST_1 (func, _##func, rettype, parameters)
+
+/* _GL_CXXALIAS_SYS (func, rettype, parameters);
+   declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to the system provided function func, if GNULIB_NAMESPACE
+   is defined.
+   Example:
+     _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
+
+   Wrapping func in an object with an inline conversion operator
+   avoids a reference to func unless GNULIB_NAMESPACE::func is
+   actually used in the program.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_SYS(func,rettype,parameters)            \
+    namespace GNULIB_NAMESPACE                                \
+    {                                                         \
+      static const struct _gl_ ## func ## _wrapper            \
+      {                                                       \
+        typedef rettype (*type) parameters;                   \
+                                                              \
+        inline operator type () const                         \
+        {                                                     \
+          return ::func;                                      \
+        }                                                     \
+      } func = {};                                            \
+    }                                                         \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS(func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_SYS_CAST (func, rettype, parameters);
+   is like  _GL_CXXALIAS_SYS (func, rettype, parameters);
+   except that the C function func may have a slightly different declaration.
+   A cast is used to silence the "invalid conversion" error that would
+   otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                          \
+    {                                                   \
+      static const struct _gl_ ## func ## _wrapper      \
+      {                                                 \
+        typedef rettype (*type) parameters;             \
+                                                        \
+        inline operator type () const                   \
+        {                                               \
+          return reinterpret_cast<type>(::func);        \
+        }                                               \
+      } func = {};                                      \
+    }                                                   \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_SYS_CAST2 (func, rettype, parameters, rettype2, parameters2);
+   is like  _GL_CXXALIAS_SYS (func, rettype, parameters);
+   except that the C function is picked among a set of overloaded functions,
+   namely the one with rettype2 and parameters2.  Two consecutive casts
+   are used to silence the "cannot find a match" and "invalid conversion"
+   errors that would otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+  /* The outer cast must be a reinterpret_cast.
+     The inner cast: When the function is defined as a set of overloaded
+     functions, it works as a static_cast<>, choosing the designated variant.
+     When the function is defined as a single variant, it works as a
+     reinterpret_cast<>. The parenthesized cast syntax works both ways.  */
+# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
+    namespace GNULIB_NAMESPACE                                                \
+    {                                                                         \
+      static const struct _gl_ ## func ## _wrapper                            \
+      {                                                                       \
+        typedef rettype (*type) parameters;                                   \
+                                                                              \
+        inline operator type () const                                         \
+        {                                                                     \
+          return reinterpret_cast<type>((rettype2 (*) parameters2)(::func));  \
+        }                                                                     \
+      } func = {};                                                            \
+    }                                                                         \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIASWARN (func);
+   causes a warning to be emitted when ::func is used but not when
+   GNULIB_NAMESPACE::func is used.  func must be defined without overloaded
+   variants.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIASWARN(func) \
+   _GL_CXXALIASWARN_1 (func, GNULIB_NAMESPACE)
+# define _GL_CXXALIASWARN_1(func,namespace) \
+   _GL_CXXALIASWARN_2 (func, namespace)
+/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
+   we enable the warning only when not optimizing.  */
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+    _GL_WARN_ON_USE (func, \
+                     "The symbol ::" #func " refers to the system function. " \
+                     "Use " #namespace "::" #func " instead.")
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+     extern __typeof__ (func) func
+# else
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+     _GL_EXTERN_C int _gl_cxxalias_dummy
+# endif
+#else
+# define _GL_CXXALIASWARN(func) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIASWARN1 (func, rettype, parameters_and_attributes);
+   causes a warning to be emitted when the given overloaded variant of ::func
+   is used but not when GNULIB_NAMESPACE::func is used.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
+   _GL_CXXALIASWARN1_1 (func, rettype, parameters_and_attributes, \
+                        GNULIB_NAMESPACE)
+# define _GL_CXXALIASWARN1_1(func,rettype,parameters_and_attributes,namespace) \
+   _GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace)
+/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
+   we enable the warning only when not optimizing.  */
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
+#  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+    _GL_WARN_ON_USE_CXX (func, rettype, rettype, parameters_and_attributes, \
+                         "The symbol ::" #func " refers to the system function. " \
+                         "Use " #namespace "::" #func " instead.")
+# else
+#  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+     _GL_EXTERN_C int _gl_cxxalias_dummy
+# endif
+#else
+# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+#endif /* _GL_CXXDEFS_H */
diff --git a/src/grep/gnulib-tests/connect.c b/src/grep/gnulib-tests/connect.c
new file mode 100644
index 0000000..b2b2e93
--- /dev/null
+++ b/src/grep/gnulib-tests/connect.c
@@ -0,0 +1,56 @@
+/* connect.c --- wrappers for Windows connect function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef connect
+
+int
+rpl_connect (int fd, const struct sockaddr *sockaddr, socklen_t len)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      int r = connect (sock, sockaddr, len);
+      if (r < 0)
+        {
+          /* EINPROGRESS is not returned by WinSock 2.0; for backwards
+             compatibility, connect(2) uses EWOULDBLOCK.  */
+          if (WSAGetLastError () == WSAEWOULDBLOCK)
+            WSASetLastError (WSAEINPROGRESS);
+
+          set_winsock_errno ();
+        }
+
+      return r;
+    }
+}
diff --git a/src/grep/gnulib-tests/fdopen.c b/src/grep/gnulib-tests/fdopen.c
new file mode 100644
index 0000000..a5266c8
--- /dev/null
+++ b/src/grep/gnulib-tests/fdopen.c
@@ -0,0 +1,73 @@
+/* Open a stream with a given file descriptor.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdio.h>
+
+#include <errno.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#undef fdopen
+
+#if defined _WIN32 && !defined __CYGWIN__
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static FILE *
+fdopen_nothrow (int fd, const char *mode)
+{
+  FILE *result;
+
+  TRY_MSVC_INVAL
+    {
+      result = _fdopen (fd, mode);
+    }
+  CATCH_MSVC_INVAL
+    {
+      result = NULL;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+# else
+#  define fdopen_nothrow _fdopen
+# endif
+#else
+# define fdopen_nothrow fdopen
+#endif
+
+FILE *
+rpl_fdopen (int fd, const char *mode)
+{
+  int saved_errno = errno;
+  FILE *fp;
+
+  errno = 0;
+  fp = fdopen_nothrow (fd, mode);
+  if (fp == NULL)
+    {
+      if (errno == 0)
+        errno = EBADF;
+    }
+  else
+    errno = saved_errno;
+
+  return fp;
+}
diff --git a/src/grep/gnulib-tests/float+.h b/src/grep/gnulib-tests/float+.h
new file mode 100644
index 0000000..ad891f6
--- /dev/null
+++ b/src/grep/gnulib-tests/float+.h
@@ -0,0 +1,147 @@
+/* Supplemental information about the floating-point formats.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2007.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _FLOATPLUS_H
+#define _FLOATPLUS_H
+
+#include <float.h>
+#include <limits.h>
+
+/* Number of bits in the mantissa of a floating-point number, including the
+   "hidden bit".  */
+#if FLT_RADIX == 2
+# define FLT_MANT_BIT FLT_MANT_DIG
+# define DBL_MANT_BIT DBL_MANT_DIG
+# define LDBL_MANT_BIT LDBL_MANT_DIG
+#elif FLT_RADIX == 4
+# define FLT_MANT_BIT (FLT_MANT_DIG * 2)
+# define DBL_MANT_BIT (DBL_MANT_DIG * 2)
+# define LDBL_MANT_BIT (LDBL_MANT_DIG * 2)
+#elif FLT_RADIX == 16
+# define FLT_MANT_BIT (FLT_MANT_DIG * 4)
+# define DBL_MANT_BIT (DBL_MANT_DIG * 4)
+# define LDBL_MANT_BIT (LDBL_MANT_DIG * 4)
+#endif
+
+/* Bit mask that can be used to mask the exponent, as an unsigned number.  */
+#define FLT_EXP_MASK ((FLT_MAX_EXP - FLT_MIN_EXP) | 7)
+#define DBL_EXP_MASK ((DBL_MAX_EXP - DBL_MIN_EXP) | 7)
+#define LDBL_EXP_MASK ((LDBL_MAX_EXP - LDBL_MIN_EXP) | 7)
+
+/* Number of bits used for the exponent of a floating-point number, including
+   the exponent's sign.  */
+#define FLT_EXP_BIT \
+  (FLT_EXP_MASK < 0x100 ? 8 : \
+   FLT_EXP_MASK < 0x200 ? 9 : \
+   FLT_EXP_MASK < 0x400 ? 10 : \
+   FLT_EXP_MASK < 0x800 ? 11 : \
+   FLT_EXP_MASK < 0x1000 ? 12 : \
+   FLT_EXP_MASK < 0x2000 ? 13 : \
+   FLT_EXP_MASK < 0x4000 ? 14 : \
+   FLT_EXP_MASK < 0x8000 ? 15 : \
+   FLT_EXP_MASK < 0x10000 ? 16 : \
+   FLT_EXP_MASK < 0x20000 ? 17 : \
+   FLT_EXP_MASK < 0x40000 ? 18 : \
+   FLT_EXP_MASK < 0x80000 ? 19 : \
+   FLT_EXP_MASK < 0x100000 ? 20 : \
+   FLT_EXP_MASK < 0x200000 ? 21 : \
+   FLT_EXP_MASK < 0x400000 ? 22 : \
+   FLT_EXP_MASK < 0x800000 ? 23 : \
+   FLT_EXP_MASK < 0x1000000 ? 24 : \
+   FLT_EXP_MASK < 0x2000000 ? 25 : \
+   FLT_EXP_MASK < 0x4000000 ? 26 : \
+   FLT_EXP_MASK < 0x8000000 ? 27 : \
+   FLT_EXP_MASK < 0x10000000 ? 28 : \
+   FLT_EXP_MASK < 0x20000000 ? 29 : \
+   FLT_EXP_MASK < 0x40000000 ? 30 : \
+   FLT_EXP_MASK <= 0x7fffffff ? 31 : \
+   32)
+#define DBL_EXP_BIT \
+  (DBL_EXP_MASK < 0x100 ? 8 : \
+   DBL_EXP_MASK < 0x200 ? 9 : \
+   DBL_EXP_MASK < 0x400 ? 10 : \
+   DBL_EXP_MASK < 0x800 ? 11 : \
+   DBL_EXP_MASK < 0x1000 ? 12 : \
+   DBL_EXP_MASK < 0x2000 ? 13 : \
+   DBL_EXP_MASK < 0x4000 ? 14 : \
+   DBL_EXP_MASK < 0x8000 ? 15 : \
+   DBL_EXP_MASK < 0x10000 ? 16 : \
+   DBL_EXP_MASK < 0x20000 ? 17 : \
+   DBL_EXP_MASK < 0x40000 ? 18 : \
+   DBL_EXP_MASK < 0x80000 ? 19 : \
+   DBL_EXP_MASK < 0x100000 ? 20 : \
+   DBL_EXP_MASK < 0x200000 ? 21 : \
+   DBL_EXP_MASK < 0x400000 ? 22 : \
+   DBL_EXP_MASK < 0x800000 ? 23 : \
+   DBL_EXP_MASK < 0x1000000 ? 24 : \
+   DBL_EXP_MASK < 0x2000000 ? 25 : \
+   DBL_EXP_MASK < 0x4000000 ? 26 : \
+   DBL_EXP_MASK < 0x8000000 ? 27 : \
+   DBL_EXP_MASK < 0x10000000 ? 28 : \
+   DBL_EXP_MASK < 0x20000000 ? 29 : \
+   DBL_EXP_MASK < 0x40000000 ? 30 : \
+   DBL_EXP_MASK <= 0x7fffffff ? 31 : \
+   32)
+#define LDBL_EXP_BIT \
+  (LDBL_EXP_MASK < 0x100 ? 8 : \
+   LDBL_EXP_MASK < 0x200 ? 9 : \
+   LDBL_EXP_MASK < 0x400 ? 10 : \
+   LDBL_EXP_MASK < 0x800 ? 11 : \
+   LDBL_EXP_MASK < 0x1000 ? 12 : \
+   LDBL_EXP_MASK < 0x2000 ? 13 : \
+   LDBL_EXP_MASK < 0x4000 ? 14 : \
+   LDBL_EXP_MASK < 0x8000 ? 15 : \
+   LDBL_EXP_MASK < 0x10000 ? 16 : \
+   LDBL_EXP_MASK < 0x20000 ? 17 : \
+   LDBL_EXP_MASK < 0x40000 ? 18 : \
+   LDBL_EXP_MASK < 0x80000 ? 19 : \
+   LDBL_EXP_MASK < 0x100000 ? 20 : \
+   LDBL_EXP_MASK < 0x200000 ? 21 : \
+   LDBL_EXP_MASK < 0x400000 ? 22 : \
+   LDBL_EXP_MASK < 0x800000 ? 23 : \
+   LDBL_EXP_MASK < 0x1000000 ? 24 : \
+   LDBL_EXP_MASK < 0x2000000 ? 25 : \
+   LDBL_EXP_MASK < 0x4000000 ? 26 : \
+   LDBL_EXP_MASK < 0x8000000 ? 27 : \
+   LDBL_EXP_MASK < 0x10000000 ? 28 : \
+   LDBL_EXP_MASK < 0x20000000 ? 29 : \
+   LDBL_EXP_MASK < 0x40000000 ? 30 : \
+   LDBL_EXP_MASK <= 0x7fffffff ? 31 : \
+   32)
+
+/* Number of bits used for a floating-point number: the mantissa (not
+   counting the "hidden bit", since it may or may not be explicit), the
+   exponent, and the sign.  */
+#define FLT_TOTAL_BIT ((FLT_MANT_BIT - 1) + FLT_EXP_BIT + 1)
+#define DBL_TOTAL_BIT ((DBL_MANT_BIT - 1) + DBL_EXP_BIT + 1)
+#define LDBL_TOTAL_BIT ((LDBL_MANT_BIT - 1) + LDBL_EXP_BIT + 1)
+
+/* Number of bytes used for a floating-point number.
+   This can be smaller than the 'sizeof'.  For example, on i386 systems,
+   'long double' most often have LDBL_MANT_BIT = 64, LDBL_EXP_BIT = 16, hence
+   LDBL_TOTAL_BIT = 80 bits, i.e. 10 bytes of consecutive memory, but
+   sizeof (long double) = 12 or = 16.  */
+#define SIZEOF_FLT ((FLT_TOTAL_BIT + CHAR_BIT - 1) / CHAR_BIT)
+#define SIZEOF_DBL ((DBL_TOTAL_BIT + CHAR_BIT - 1) / CHAR_BIT)
+#define SIZEOF_LDBL ((LDBL_TOTAL_BIT + CHAR_BIT - 1) / CHAR_BIT)
+
+/* Verify that SIZEOF_FLT <= sizeof (float) etc.  */
+typedef int verify_sizeof_flt[SIZEOF_FLT <= sizeof (float) ? 1 : -1];
+typedef int verify_sizeof_dbl[SIZEOF_DBL <= sizeof (double) ? 1 : - 1];
+typedef int verify_sizeof_ldbl[SIZEOF_LDBL <= sizeof (long double) ? 1 : - 1];
+
+#endif /* _FLOATPLUS_H */
diff --git a/src/grep/gnulib-tests/float.c b/src/grep/gnulib-tests/float.c
new file mode 100644
index 0000000..dd1e84a
--- /dev/null
+++ b/src/grep/gnulib-tests/float.c
@@ -0,0 +1,33 @@
+/* Auxiliary definitions for <float.h>.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <float.h>
+
+#if (defined _ARCH_PPC || defined _POWER) && (defined _AIX || defined __linux__) && (LDBL_MANT_DIG == 106) && defined __GNUC__
+const union gl_long_double_union gl_LDBL_MAX =
+  { { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL } };
+#elif defined __i386__
+const union gl_long_double_union gl_LDBL_MAX =
+  { { 0xFFFFFFFF, 0xFFFFFFFF, 32766 } };
+#else
+/* This declaration is solely to ensure that after preprocessing
+   this file is never empty.  */
+typedef int dummy;
+#endif
diff --git a/src/grep/gnulib-tests/float.in.h b/src/grep/gnulib-tests/float.in.h
new file mode 100644
index 0000000..f52aba3
--- /dev/null
+++ b/src/grep/gnulib-tests/float.in.h
@@ -0,0 +1,194 @@
+/* A correct <float.h>.
+
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _@GUARD_PREFIX@_FLOAT_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_FLOAT_H@
+
+#ifndef _@GUARD_PREFIX@_FLOAT_H
+#define _@GUARD_PREFIX@_FLOAT_H
+
+/* 'long double' properties.  */
+
+#if defined __i386__ && (defined __BEOS__ || defined __OpenBSD__)
+/* Number of mantissa units, in base FLT_RADIX.  */
+# undef LDBL_MANT_DIG
+# define LDBL_MANT_DIG   64
+/* Number of decimal digits that is sufficient for representing a number.  */
+# undef LDBL_DIG
+# define LDBL_DIG        18
+/* x-1 where x is the smallest representable number > 1.  */
+# undef LDBL_EPSILON
+# define LDBL_EPSILON    1.0842021724855044340E-19L
+/* Minimum e such that FLT_RADIX^(e-1) is a normalized number.  */
+# undef LDBL_MIN_EXP
+# define LDBL_MIN_EXP    (-16381)
+/* Maximum e such that FLT_RADIX^(e-1) is a representable finite number.  */
+# undef LDBL_MAX_EXP
+# define LDBL_MAX_EXP    16384
+/* Minimum positive normalized number.  */
+# undef LDBL_MIN
+# define LDBL_MIN        3.3621031431120935063E-4932L
+/* Maximum representable finite number.  */
+# undef LDBL_MAX
+# define LDBL_MAX        1.1897314953572317650E+4932L
+/* Minimum e such that 10^e is in the range of normalized numbers.  */
+# undef LDBL_MIN_10_EXP
+# define LDBL_MIN_10_EXP (-4931)
+/* Maximum e such that 10^e is in the range of representable finite numbers.  */
+# undef LDBL_MAX_10_EXP
+# define LDBL_MAX_10_EXP 4932
+#endif
+
+/* On FreeBSD/x86 6.4, the 'long double' type really has only 53 bits of
+   precision in the compiler but 64 bits of precision at runtime.  See
+   <https://lists.gnu.org/r/bug-gnulib/2008-07/msg00063.html>.  */
+#if defined __i386__ && (defined __FreeBSD__ || defined __DragonFly__)
+/* Number of mantissa units, in base FLT_RADIX.  */
+# undef LDBL_MANT_DIG
+# define LDBL_MANT_DIG   64
+/* Number of decimal digits that is sufficient for representing a number.  */
+# undef LDBL_DIG
+# define LDBL_DIG        18
+/* x-1 where x is the smallest representable number > 1.  */
+# undef LDBL_EPSILON
+# define LDBL_EPSILON 1.084202172485504434007452800869941711426e-19L /* 2^-63 */
+/* Minimum e such that FLT_RADIX^(e-1) is a normalized number.  */
+# undef LDBL_MIN_EXP
+# define LDBL_MIN_EXP    (-16381)
+/* Maximum e such that FLT_RADIX^(e-1) is a representable finite number.  */
+# undef LDBL_MAX_EXP
+# define LDBL_MAX_EXP    16384
+/* Minimum positive normalized number.  */
+# undef LDBL_MIN
+# define LDBL_MIN        3.362103143112093506262677817321752E-4932L /* = 0x1p-16382L */
+/* Maximum representable finite number.  */
+# undef LDBL_MAX
+/* LDBL_MAX is represented as { 0xFFFFFFFF, 0xFFFFFFFF, 32766 }.
+   But the largest literal that GCC allows us to write is
+   0x0.fffffffffffff8p16384L = { 0xFFFFF800, 0xFFFFFFFF, 32766 }.
+   So, define it like this through a reference to an external variable
+
+     const unsigned int LDBL_MAX[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 32766 };
+     extern const long double LDBL_MAX;
+
+   Unfortunately, this is not a constant expression.  */
+# if !GNULIB_defined_long_double_union
+union gl_long_double_union
+  {
+    struct { unsigned int lo; unsigned int hi; unsigned int exponent; } xd;
+    long double ld;
+  };
+#  define GNULIB_defined_long_double_union 1
+# endif
+extern const union gl_long_double_union gl_LDBL_MAX;
+# define LDBL_MAX (gl_LDBL_MAX.ld)
+/* Minimum e such that 10^e is in the range of normalized numbers.  */
+# undef LDBL_MIN_10_EXP
+# define LDBL_MIN_10_EXP (-4931)
+/* Maximum e such that 10^e is in the range of representable finite numbers.  */
+# undef LDBL_MAX_10_EXP
+# define LDBL_MAX_10_EXP 4932
+#endif
+
+/* On AIX 7.1 with gcc 4.2, the values of LDBL_MIN_EXP, LDBL_MIN, LDBL_MAX are
+   wrong.
+   On Linux/PowerPC with gcc 4.4, the value of LDBL_MAX is wrong.  */
+#if (defined _ARCH_PPC || defined _POWER) && defined _AIX && (LDBL_MANT_DIG == 106) && defined __GNUC__
+# undef LDBL_MIN_EXP
+# define LDBL_MIN_EXP DBL_MIN_EXP
+# undef LDBL_MIN_10_EXP
+# define LDBL_MIN_10_EXP DBL_MIN_10_EXP
+# undef LDBL_MIN
+# define LDBL_MIN 2.22507385850720138309023271733240406422e-308L /* DBL_MIN = 2^-1022 */
+#endif
+#if (defined _ARCH_PPC || defined _POWER) && (defined _AIX || defined __linux__) && (LDBL_MANT_DIG == 106) && defined __GNUC__
+# undef LDBL_MAX
+/* LDBL_MAX is represented as { 0x7FEFFFFF, 0xFFFFFFFF, 0x7C8FFFFF, 0xFFFFFFFF }.
+   It is not easy to define:
+     #define LDBL_MAX 1.79769313486231580793728971405302307166e308L
+   is too small, whereas
+     #define LDBL_MAX 1.79769313486231580793728971405302307167e308L
+   is too large.  Apparently a bug in GCC decimal-to-binary conversion.
+   Also, I can't get values larger than
+     #define LDBL63 ((long double) (1ULL << 63))
+     #define LDBL882 (LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63)
+     #define LDBL945 (LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63)
+     #define LDBL1008 (LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63)
+     #define LDBL_MAX (LDBL1008 * 65535.0L + LDBL945 * (long double) 9223372036821221375ULL + LDBL882 * (long double) 4611686018427387904ULL)
+   which is represented as { 0x7FEFFFFF, 0xFFFFFFFF, 0x7C8FFFFF, 0xF8000000 }.
+   So, define it like this through a reference to an external variable
+
+     const double LDBL_MAX[2] = { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL };
+     extern const long double LDBL_MAX;
+
+   or through a pointer cast
+
+     #define LDBL_MAX \
+       (*(const long double *) (double[]) { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL })
+
+   Unfortunately, this is not a constant expression, and the latter expression
+   does not work well when GCC is optimizing..  */
+# if !GNULIB_defined_long_double_union
+union gl_long_double_union
+  {
+    struct { double hi; double lo; } dd;
+    long double ld;
+  };
+#  define GNULIB_defined_long_double_union 1
+# endif
+extern const union gl_long_double_union gl_LDBL_MAX;
+# define LDBL_MAX (gl_LDBL_MAX.ld)
+#endif
+
+/* On IRIX 6.5, with cc, the value of LDBL_MANT_DIG is wrong.
+   On IRIX 6.5, with gcc 4.2, the values of LDBL_MIN_EXP, LDBL_MIN, LDBL_EPSILON
+   are wrong.  */
+#if defined __sgi && (LDBL_MANT_DIG >= 106)
+# undef LDBL_MANT_DIG
+# define LDBL_MANT_DIG 106
+# if defined __GNUC__
+#  undef LDBL_MIN_EXP
+#  define LDBL_MIN_EXP DBL_MIN_EXP
+#  undef LDBL_MIN_10_EXP
+#  define LDBL_MIN_10_EXP DBL_MIN_10_EXP
+#  undef LDBL_MIN
+#  define LDBL_MIN 2.22507385850720138309023271733240406422e-308L /* DBL_MIN = 2^-1022 */
+#  undef LDBL_EPSILON
+#  define LDBL_EPSILON 2.46519032881566189191165176650870696773e-32L /* 2^-105 */
+# endif
+#endif
+
+#if @REPLACE_ITOLD@
+/* Pull in a function that fixes the 'int' to 'long double' conversion
+   of glibc 2.7.  */
+extern
+# ifdef __cplusplus
+"C"
+# endif
+void _Qp_itoq (long double *, int);
+static void (*_gl_float_fix_itold) (long double *, int) = _Qp_itoq;
+#endif
+
+#endif /* _@GUARD_PREFIX@_FLOAT_H */
+#endif /* _@GUARD_PREFIX@_FLOAT_H */
diff --git a/src/grep/gnulib-tests/fpucw.h b/src/grep/gnulib-tests/fpucw.h
new file mode 100644
index 0000000..4060911
--- /dev/null
+++ b/src/grep/gnulib-tests/fpucw.h
@@ -0,0 +1,108 @@
+/* Manipulating the FPU control word.  -*- coding: utf-8 -*-
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2007.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _FPUCW_H
+#define _FPUCW_H
+
+/* The i386 floating point hardware (the 387 compatible FPU, not the modern
+   SSE/SSE2 hardware) has a controllable rounding precision.  It is specified
+   through the 'PC' bits in the FPU control word ('fctrl' register).  (See
+   the GNU libc i386 <fpu_control.h> header for details.)
+
+   On some platforms, such as Linux or Solaris, the default precision setting
+   is set to "extended precision".  This means that 'long double' instructions
+   operate correctly, but 'double' computations often produce slightly
+   different results as on strictly IEEE 754 conforming systems.
+
+   On some platforms, such as NetBSD, the default precision is set to
+   "double precision".  This means that 'long double' instructions will operate
+   only as 'double', i.e. lead to wrong results.  Similarly on FreeBSD 6.4, at
+   least for the division of 'long double' numbers.
+
+   The FPU control word is under control of the application, i.e. it is
+   not required to be set either way by the ABI.  (In fact, the i386 ABI
+   https://www.linux-mips.org/pub/linux/mips/doc/ABI/abi386-4.pdf page 3-12 = page 38
+   is not clear about it.  But in any case, gcc treats the control word
+   like a "preserved" register: it emits code that assumes that the control
+   word is preserved across calls, and it restores the control word at the
+   end of functions that modify it.)
+
+   See Vincent Lefèvre's page https://www.vinc17.net/research/extended.en.html
+   for a good explanation.
+   See https://web.archive.org/web/20060905133417/http://www.uwsg.iu.edu/hypermail/linux/kernel/0103.0/0453.html
+   some argumentation which setting should be the default.  */
+
+/* This header file provides the following facilities:
+     fpucw_t                        integral type holding the value of 'fctrl'
+     FPU_PC_MASK                    bit mask denoting the precision control
+     FPU_PC_DOUBLE                  precision control for 53 bits mantissa
+     FPU_PC_EXTENDED                precision control for 64 bits mantissa
+     GET_FPUCW ()                   yields the current FPU control word
+     SET_FPUCW (word)               sets the FPU control word
+     DECL_LONG_DOUBLE_ROUNDING      variable declaration for
+                                    BEGIN/END_LONG_DOUBLE_ROUNDING
+     BEGIN_LONG_DOUBLE_ROUNDING ()  starts a sequence of instructions with
+                                    'long double' safe operation precision
+     END_LONG_DOUBLE_ROUNDING ()    ends a sequence of instructions with
+                                    'long double' safe operation precision
+ */
+
+/* Inline assembler like this works only with GNU C and clang.  */
+#if (defined __i386__ || defined __x86_64__) && (defined __GNUC__ || defined __clang__)
+
+typedef unsigned short fpucw_t; /* glibc calls this fpu_control_t */
+
+# define FPU_PC_MASK 0x0300
+# define FPU_PC_DOUBLE 0x200    /* glibc calls this _FPU_DOUBLE */
+# define FPU_PC_EXTENDED 0x300  /* glibc calls this _FPU_EXTENDED */
+
+# define GET_FPUCW() __extension__ \
+  ({ fpucw_t _cw;                                               \
+     __asm__ __volatile__ ("fnstcw %0" : "=m" (*&_cw));         \
+     _cw;                                                       \
+   })
+# define SET_FPUCW(word) __extension__ \
+  (void)({ fpucw_t _ncw = (word);                               \
+           __asm__ __volatile__ ("fldcw %0" : : "m" (*&_ncw));  \
+         })
+
+# define DECL_LONG_DOUBLE_ROUNDING \
+  fpucw_t oldcw;
+# define BEGIN_LONG_DOUBLE_ROUNDING() \
+  (void)(oldcw = GET_FPUCW (),                                  \
+         SET_FPUCW ((oldcw & ~FPU_PC_MASK) | FPU_PC_EXTENDED))
+# define END_LONG_DOUBLE_ROUNDING() \
+  SET_FPUCW (oldcw)
+
+#else
+
+typedef unsigned int fpucw_t;
+
+# define FPU_PC_MASK 0
+# define FPU_PC_DOUBLE 0
+# define FPU_PC_EXTENDED 0
+
+# define GET_FPUCW() 0
+# define SET_FPUCW(word) (void)(word)
+
+# define DECL_LONG_DOUBLE_ROUNDING
+# define BEGIN_LONG_DOUBLE_ROUNDING()
+# define END_LONG_DOUBLE_ROUNDING()
+
+#endif
+
+#endif /* _FPUCW_H */
diff --git a/src/grep/gnulib-tests/ftruncate.c b/src/grep/gnulib-tests/ftruncate.c
new file mode 100644
index 0000000..873f302
--- /dev/null
+++ b/src/grep/gnulib-tests/ftruncate.c
@@ -0,0 +1,195 @@
+/* ftruncate emulations for native Windows.
+   Copyright (C) 1992-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#if HAVE__CHSIZE
+/* A native Windows platform.  */
+
+# include <errno.h>
+
+# if _GL_WINDOWS_64_BIT_OFF_T
+
+/* Large File Support: off_t is 64-bit, but _chsize() takes only a 32-bit
+   argument.  So, define a 64-bit safe SetFileSize function ourselves.  */
+
+/* Ensure that <windows.h> declares GetFileSizeEx.  */
+#  if !defined _WIN32_WINNT || (_WIN32_WINNT < _WIN32_WINNT_WIN2K)
+#   undef _WIN32_WINNT
+#   define _WIN32_WINNT _WIN32_WINNT_WIN2K
+#  endif
+
+/* Get declarations of the native Windows API functions.  */
+#  define WIN32_LEAN_AND_MEAN
+#  include <windows.h>
+
+/* Get _get_osfhandle.  */
+#  if GNULIB_MSVC_NOTHROW
+#   include "msvc-nothrow.h"
+#  else
+#   include <io.h>
+#  endif
+
+static BOOL
+SetFileSize (HANDLE h, LONGLONG size)
+{
+  LARGE_INTEGER old_size;
+
+  if (!GetFileSizeEx (h, &old_size))
+    return FALSE;
+
+  if (size != old_size.QuadPart)
+    {
+      /* Duplicate the handle, so we are free to modify its file position.  */
+      HANDLE curr_process = GetCurrentProcess ();
+      HANDLE tmph;
+
+      if (!DuplicateHandle (curr_process,           /* SourceProcessHandle */
+                            h,                      /* SourceHandle */
+                            curr_process,           /* TargetProcessHandle */
+                            (PHANDLE) &tmph,        /* TargetHandle */
+                            (DWORD) 0,              /* DesiredAccess */
+                            FALSE,                  /* InheritHandle */
+                            DUPLICATE_SAME_ACCESS)) /* Options */
+        return FALSE;
+
+      if (size < old_size.QuadPart)
+        {
+          /* Reduce the size.  */
+          LONG size_hi = (LONG) (size >> 32);
+          if (SetFilePointer (tmph, (LONG) size, &size_hi, FILE_BEGIN)
+              == INVALID_SET_FILE_POINTER
+              && GetLastError() != NO_ERROR)
+            {
+              CloseHandle (tmph);
+              return FALSE;
+            }
+          if (!SetEndOfFile (tmph))
+            {
+              CloseHandle (tmph);
+              return FALSE;
+            }
+        }
+      else
+        {
+          /* Increase the size by adding zero bytes at the end.  */
+          static char zero_bytes[1024];
+          LONG pos_hi = 0;
+          LONG pos_lo = SetFilePointer (tmph, (LONG) 0, &pos_hi, FILE_END);
+          LONGLONG pos;
+          if (pos_lo == INVALID_SET_FILE_POINTER
+              && GetLastError() != NO_ERROR)
+            {
+              CloseHandle (tmph);
+              return FALSE;
+            }
+          pos = ((LONGLONG) pos_hi << 32) | (ULONGLONG) (ULONG) pos_lo;
+          while (pos < size)
+            {
+              DWORD written;
+              LONGLONG count = size - pos;
+              if (count > sizeof (zero_bytes))
+                count = sizeof (zero_bytes);
+              if (!WriteFile (tmph, zero_bytes, (DWORD) count, &written, NULL)
+                  || written == 0)
+                {
+                  CloseHandle (tmph);
+                  return FALSE;
+                }
+              pos += (ULONGLONG) (ULONG) written;
+            }
+        }
+      /* Close the handle.  */
+      CloseHandle (tmph);
+    }
+  return TRUE;
+}
+
+int
+ftruncate (int fd, off_t length)
+{
+  HANDLE handle = (HANDLE) _get_osfhandle (fd);
+
+  if (handle == INVALID_HANDLE_VALUE)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  if (length < 0)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  if (!SetFileSize (handle, length))
+    {
+      switch (GetLastError ())
+        {
+        case ERROR_ACCESS_DENIED:
+          errno = EACCES;
+          break;
+        case ERROR_HANDLE_DISK_FULL:
+        case ERROR_DISK_FULL:
+        case ERROR_DISK_TOO_FRAGMENTED:
+          errno = ENOSPC;
+          break;
+        default:
+          errno = EIO;
+          break;
+        }
+      return -1;
+    }
+  return 0;
+}
+
+# else
+
+#  include <io.h>
+
+#  if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+#   include "msvc-inval.h"
+static int
+chsize_nothrow (int fd, long length)
+{
+  int result;
+
+  TRY_MSVC_INVAL
+    {
+      result = _chsize (fd, length);
+    }
+  CATCH_MSVC_INVAL
+    {
+      result = -1;
+      errno = EBADF;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+#  else
+#   define chsize_nothrow _chsize
+#  endif
+
+int
+ftruncate (int fd, off_t length)
+{
+  return chsize_nothrow (fd, length);
+}
+
+# endif
+#endif
diff --git a/src/grep/gnulib-tests/gettimeofday.c b/src/grep/gnulib-tests/gettimeofday.c
new file mode 100644
index 0000000..2a222fc
--- /dev/null
+++ b/src/grep/gnulib-tests/gettimeofday.c
@@ -0,0 +1,153 @@
+/* Provide gettimeofday for systems that don't have it or for which it's broken.
+
+   Copyright (C) 2001-2003, 2005-2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#include <config.h>
+
+/* Specification.  */
+#include <sys/time.h>
+
+#include <time.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+# define WINDOWS_NATIVE
+# include <windows.h>
+#endif
+
+#ifdef WINDOWS_NATIVE
+
+/* Don't assume that UNICODE is not defined.  */
+# undef LoadLibrary
+# define LoadLibrary LoadLibraryA
+
+# if !(_WIN32_WINNT >= _WIN32_WINNT_WIN8)
+
+/* Avoid warnings from gcc -Wcast-function-type.  */
+#  define GetProcAddress \
+    (void *) GetProcAddress
+
+/* GetSystemTimePreciseAsFileTime was introduced only in Windows 8.  */
+typedef void (WINAPI * GetSystemTimePreciseAsFileTimeFuncType) (FILETIME *lpTime);
+static GetSystemTimePreciseAsFileTimeFuncType GetSystemTimePreciseAsFileTimeFunc = NULL;
+static BOOL initialized = FALSE;
+
+static void
+initialize (void)
+{
+  HMODULE kernel32 = LoadLibrary ("kernel32.dll");
+  if (kernel32 != NULL)
+    {
+      GetSystemTimePreciseAsFileTimeFunc =
+        (GetSystemTimePreciseAsFileTimeFuncType) GetProcAddress (kernel32, "GetSystemTimePreciseAsFileTime");
+    }
+  initialized = TRUE;
+}
+
+# else
+
+#  define GetSystemTimePreciseAsFileTimeFunc GetSystemTimePreciseAsFileTime
+
+# endif
+
+#endif
+
+/* This is a wrapper for gettimeofday.  It is used only on systems
+   that lack this function, or whose implementation of this function
+   causes problems.
+   Work around the bug in some systems whereby gettimeofday clobbers
+   the static buffer that localtime uses for its return value.  The
+   gettimeofday function from Mac OS X 10.0.4 (i.e., Darwin 1.3.7) has
+   this problem.  */
+
+int
+gettimeofday (struct timeval *restrict tv, void *restrict tz)
+{
+#undef gettimeofday
+#ifdef WINDOWS_NATIVE
+
+  /* On native Windows, there are two ways to get the current time:
+     GetSystemTimeAsFileTime
+     <https://docs.microsoft.com/en-us/windows/desktop/api/sysinfoapi/nf-sysinfoapi-getsystemtimeasfiletime>
+     or
+     GetSystemTimePreciseAsFileTime
+     <https://docs.microsoft.com/en-us/windows/desktop/api/sysinfoapi/nf-sysinfoapi-getsystemtimepreciseasfiletime>.
+     GetSystemTimeAsFileTime produces values that jump by increments of
+     15.627 milliseconds (!) on average.
+     Whereas GetSystemTimePreciseAsFileTime values usually jump by 1 or 2
+     microseconds.
+     More discussion on this topic:
+     <http://www.windowstimestamp.com/description>.  */
+  FILETIME current_time;
+
+# if !(_WIN32_WINNT >= _WIN32_WINNT_WIN8)
+  if (!initialized)
+    initialize ();
+# endif
+  if (GetSystemTimePreciseAsFileTimeFunc != NULL)
+    GetSystemTimePreciseAsFileTimeFunc (&current_time);
+  else
+    GetSystemTimeAsFileTime (&current_time);
+
+  /* Convert from FILETIME to 'struct timeval'.  */
+  /* FILETIME: <https://docs.microsoft.com/en-us/windows/desktop/api/minwinbase/ns-minwinbase-filetime> */
+  ULONGLONG since_1601 =
+    ((ULONGLONG) current_time.dwHighDateTime << 32)
+    | (ULONGLONG) current_time.dwLowDateTime;
+  /* Between 1601-01-01 and 1970-01-01 there were 280 normal years and 89 leap
+     years, in total 134774 days.  */
+  ULONGLONG since_1970 =
+    since_1601 - (ULONGLONG) 134774 * (ULONGLONG) 86400 * (ULONGLONG) 10000000;
+  ULONGLONG microseconds_since_1970 = since_1970 / (ULONGLONG) 10;
+  tv->tv_sec = microseconds_since_1970 / (ULONGLONG) 1000000;
+  tv->tv_usec = microseconds_since_1970 % (ULONGLONG) 1000000;
+
+  return 0;
+
+#else
+
+# if HAVE_GETTIMEOFDAY
+
+#  if defined timeval /* 'struct timeval' overridden by gnulib?  */
+#   undef timeval
+  struct timeval otv;
+  int result = gettimeofday (&otv, (struct timezone *) tz);
+  if (result == 0)
+    {
+      tv->tv_sec = otv.tv_sec;
+      tv->tv_usec = otv.tv_usec;
+    }
+#  else
+  int result = gettimeofday (tv, (struct timezone *) tz);
+#  endif
+
+  return result;
+
+# else
+
+#  if !defined OK_TO_USE_1S_CLOCK
+#   error "Only 1-second nominal clock resolution found.  Is that intended?" \
+          "If so, compile with the -DOK_TO_USE_1S_CLOCK option."
+#  endif
+  tv->tv_sec = time (NULL);
+  tv->tv_usec = 0;
+
+  return 0;
+
+# endif
+#endif
+}
diff --git a/src/grep/gnulib-tests/glthread/thread.c b/src/grep/gnulib-tests/glthread/thread.c
new file mode 100644
index 0000000..de44932
--- /dev/null
+++ b/src/grep/gnulib-tests/glthread/thread.c
@@ -0,0 +1,216 @@
+/* Creating and controlling threads.
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-win32.h.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "glthread/thread.h"
+
+#include <stdlib.h>
+#include "glthread/lock.h"
+
+/* ========================================================================= */
+
+#if USE_ISOC_THREADS
+
+struct thrd_with_exitvalue
+{
+  thrd_t volatile tid;
+  void * volatile exitvalue;
+};
+
+/* The Thread-Specific Storage (TSS) key that allows to access each thread's
+   'struct thrd_with_exitvalue *' pointer.  */
+static tss_t thrd_with_exitvalue_key;
+
+/* Initializes thrd_with_exitvalue_key.
+   This function must only be called once.  */
+static void
+do_init_thrd_with_exitvalue_key (void)
+{
+  if (tss_create (&thrd_with_exitvalue_key, NULL) != thrd_success)
+    abort ();
+}
+
+/* Initializes thrd_with_exitvalue_key.  */
+static void
+init_thrd_with_exitvalue_key (void)
+{
+  static once_flag once = ONCE_FLAG_INIT;
+  call_once (&once, do_init_thrd_with_exitvalue_key);
+}
+
+typedef union
+        {
+          struct thrd_with_exitvalue t;
+          struct
+          {
+            thrd_t tid; /* reserve memory for t.tid */
+            void *(*mainfunc) (void *);
+            void *arg;
+          } a;
+        }
+        main_arg_t;
+
+static int
+thrd_main_func (void *pmarg)
+{
+  /* Unpack the object that combines mainfunc and arg.  */
+  main_arg_t *main_arg = (main_arg_t *) pmarg;
+  void *(*mainfunc) (void *) = main_arg->a.mainfunc;
+  void *arg = main_arg->a.arg;
+
+  if (tss_set (thrd_with_exitvalue_key, &main_arg->t) != thrd_success)
+    abort ();
+
+  /* Execute mainfunc, with arg as argument.  */
+  {
+    void *exitvalue = mainfunc (arg);
+    /* Store the exitvalue, for use by glthread_join().  */
+    main_arg->t.exitvalue = exitvalue;
+    return 0;
+  }
+}
+
+int
+glthread_create (gl_thread_t *threadp, void *(*mainfunc) (void *), void *arg)
+{
+  init_thrd_with_exitvalue_key ();
+  {
+    /* Combine mainfunc and arg in a single object.
+       A stack-allocated object does not work, because it would be out of
+       existence when thrd_create returns before thrd_main_func is
+       entered.  So, allocate it in the heap.  */
+    main_arg_t *main_arg = (main_arg_t *) malloc (sizeof (main_arg_t));
+    if (main_arg == NULL)
+      return ENOMEM;
+    main_arg->a.mainfunc = mainfunc;
+    main_arg->a.arg = arg;
+    switch (thrd_create ((thrd_t *) &main_arg->t.tid, thrd_main_func, main_arg))
+      {
+      case thrd_success:
+        break;
+      case thrd_nomem:
+        free (main_arg);
+        return ENOMEM;
+      default:
+        free (main_arg);
+        return EAGAIN;
+      }
+    *threadp = &main_arg->t;
+    return 0;
+  }
+}
+
+gl_thread_t
+gl_thread_self (void)
+{
+  init_thrd_with_exitvalue_key ();
+  {
+    gl_thread_t thread =
+      (struct thrd_with_exitvalue *) tss_get (thrd_with_exitvalue_key);
+    if (thread == NULL)
+      {
+        /* This happens only in threads that have not been created through
+           glthread_create(), such as the main thread.  */
+        for (;;)
+          {
+            thread =
+              (struct thrd_with_exitvalue *)
+              malloc (sizeof (struct thrd_with_exitvalue));
+            if (thread != NULL)
+              break;
+            /* Memory allocation failed.  There is not much we can do.  Have to
+               busy-loop, waiting for the availability of memory.  */
+            {
+              struct timespec ts;
+              ts.tv_sec = 1;
+              ts.tv_nsec = 0;
+              thrd_sleep (&ts, NULL);
+            }
+          }
+        thread->tid = thrd_current ();
+        thread->exitvalue = NULL; /* just to be deterministic */
+        if (tss_set (thrd_with_exitvalue_key, thread) != thrd_success)
+          abort ();
+      }
+    return thread;
+  }
+}
+
+int
+glthread_join (gl_thread_t thread, void **return_value_ptr)
+{
+  /* On Solaris 11.4, thrd_join crashes when the second argument we pass is
+     NULL.  */
+  int dummy;
+
+  if (thread == gl_thread_self ())
+    return EINVAL;
+  if (thrd_join (thread->tid, &dummy) != thrd_success)
+    return EINVAL;
+  if (return_value_ptr != NULL)
+    *return_value_ptr = thread->exitvalue;
+  free (thread);
+  return 0;
+}
+
+_Noreturn void
+gl_thread_exit (void *return_value)
+{
+  gl_thread_t thread = gl_thread_self ();
+  thread->exitvalue = return_value;
+  thrd_exit (0);
+}
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS
+
+#include <pthread.h>
+
+#if defined PTW32_VERSION || defined __MVS__
+
+const gl_thread_t gl_null_thread /* = { .p = NULL } */;
+
+#endif
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_WINDOWS_THREADS
+
+#endif
+
+/* ========================================================================= */
+
+gl_thread_t
+gl_thread_create (void *(*func) (void *arg), void *arg)
+{
+  gl_thread_t thread;
+  int ret;
+
+  ret = glthread_create (&thread, func, arg);
+  if (ret != 0)
+    abort ();
+  return thread;
+}
diff --git a/src/grep/gnulib-tests/glthread/thread.h b/src/grep/gnulib-tests/glthread/thread.h
new file mode 100644
index 0000000..44f05f3
--- /dev/null
+++ b/src/grep/gnulib-tests/glthread/thread.h
@@ -0,0 +1,338 @@
+/* Creating and controlling threads.
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-win32.h.  */
+
+/* This file contains primitives for creating and controlling threads.
+
+   Thread data type: gl_thread_t.
+
+   Creating a thread:
+       thread = gl_thread_create (func, arg);
+   Or with control of error handling:
+       err = glthread_create (&thread, func, arg);
+       extern int glthread_create (gl_thread_t *result,
+                                   void *(*func) (void *), void *arg);
+
+   Querying and changing the signal mask of a thread (not supported on all
+   platforms):
+       gl_thread_sigmask (how, newmask, oldmask);
+   Or with control of error handling:
+       err = glthread_sigmask (how, newmask, oldmask);
+       extern int glthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask);
+
+   Waiting for termination of another thread:
+       gl_thread_join (thread, &return_value);
+   Or with control of error handling:
+       err = glthread_join (thread, &return_value);
+       extern int glthread_join (gl_thread_t thread, void **return_value_ptr);
+
+   Getting a reference to the current thread:
+       current = gl_thread_self ();
+       extern gl_thread_t gl_thread_self (void);
+
+   Getting a reference to the current thread as a pointer, for debugging:
+       ptr = gl_thread_self_pointer ();
+       extern void * gl_thread_self_pointer (void);
+
+   Terminating the current thread:
+       gl_thread_exit (return_value);
+       extern _Noreturn void gl_thread_exit (void *return_value);
+
+   Requesting custom code to be executed at fork() time (not supported on all
+   platforms):
+       gl_thread_atfork (prepare_func, parent_func, child_func);
+   Or with control of error handling:
+       err = glthread_atfork (prepare_func, parent_func, child_func);
+       extern int glthread_atfork (void (*prepare_func) (void),
+                                   void (*parent_func) (void),
+                                   void (*child_func) (void));
+   Note that even on platforms where this is supported, use of fork() and
+   threads together is problematic, see
+     <https://lists.gnu.org/r/bug-gnulib/2008-08/msg00062.html>
+ */
+
+
+#ifndef _GLTHREAD_THREAD_H
+#define _GLTHREAD_THREAD_H
+
+#include <errno.h>
+#include <stdlib.h>
+
+#if !defined c11_threads_in_use
+# if HAVE_THREADS_H && USE_POSIX_THREADS_FROM_LIBC
+#  define c11_threads_in_use() 1
+# elif HAVE_THREADS_H && USE_POSIX_THREADS_WEAK
+#  include <threads.h>
+#  pragma weak thrd_exit
+#  define c11_threads_in_use() (thrd_exit != NULL)
+# else
+#  define c11_threads_in_use() 0
+# endif
+#endif
+
+/* ========================================================================= */
+
+#if USE_ISOC_THREADS
+
+/* Use the ISO C threads library.  */
+
+# include <threads.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+/* -------------------------- gl_thread_t datatype -------------------------- */
+
+typedef struct thrd_with_exitvalue *gl_thread_t;
+extern int glthread_create (gl_thread_t *threadp,
+                            void *(*func) (void *), void *arg);
+# define glthread_sigmask(HOW, SET, OSET) \
+    pthread_sigmask (HOW, SET, OSET)
+extern int glthread_join (gl_thread_t thread, void **return_value_ptr);
+extern gl_thread_t gl_thread_self (void);
+# define gl_thread_self_pointer() \
+    (void *) gl_thread_self ()
+extern _Noreturn void gl_thread_exit (void *return_value);
+# define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS
+
+/* Use the POSIX threads library.  */
+
+# include <pthread.h>
+
+/* On IRIX, pthread_atfork is declared in <unistd.h>, not in <pthread.h>.  */
+# if defined __sgi
+#  include <unistd.h>
+# endif
+
+# if USE_POSIX_THREADS_WEAK
+/* Compilers other than GCC need to see the declaration of pthread_sigmask
+   before the "#pragma weak pthread_sigmask" below.  */
+#  include <signal.h>
+# endif
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+# if PTHREAD_IN_USE_DETECTION_HARD
+
+/* The pthread_in_use() detection needs to be done at runtime.  */
+#  define pthread_in_use() \
+     glthread_in_use ()
+extern int glthread_in_use (void);
+
+# endif
+
+# if USE_POSIX_THREADS_WEAK
+
+/* Use weak references to the POSIX threads library.  */
+
+/* Weak references avoid dragging in external libraries if the other parts
+   of the program don't use them.  Here we use them, because we don't want
+   every program that uses libintl to depend on libpthread.  This assumes
+   that libpthread would not be loaded after libintl; i.e. if libintl is
+   loaded first, by an executable that does not depend on libpthread, and
+   then a module is dynamically loaded that depends on libpthread, libintl
+   will not be multithread-safe.  */
+
+/* The way to test at runtime whether libpthread is present is to test
+   whether a function pointer's value, such as &pthread_mutex_init, is
+   non-NULL.  However, some versions of GCC have a bug through which, in
+   PIC mode, &foo != NULL always evaluates to true if there is a direct
+   call to foo(...) in the same function.  To avoid this, we test the
+   address of a function in libpthread that we don't use.  */
+
+#  ifndef pthread_sigmask /* Do not declare rpl_pthread_sigmask weak.  */
+#   pragma weak pthread_sigmask
+#  endif
+
+#  pragma weak pthread_join
+#  ifndef pthread_self
+#   pragma weak pthread_self
+#  endif
+#  pragma weak pthread_exit
+#  if HAVE_PTHREAD_ATFORK
+#   pragma weak pthread_atfork
+#  endif
+
+#  if !PTHREAD_IN_USE_DETECTION_HARD
+#   pragma weak pthread_mutexattr_gettype
+#   define pthread_in_use() \
+      (pthread_mutexattr_gettype != NULL || c11_threads_in_use ())
+#  endif
+
+# else
+
+#  if !PTHREAD_IN_USE_DETECTION_HARD
+#   define pthread_in_use() 1
+#  endif
+
+# endif
+
+/* -------------------------- gl_thread_t datatype -------------------------- */
+
+/* This choice of gl_thread_t assumes that
+     pthread_equal (a, b)  is equivalent to  ((a) == (b)).
+   This is the case on all platforms in use in 2008.  */
+typedef pthread_t gl_thread_t;
+# define glthread_create(THREADP, FUNC, ARG) \
+    (pthread_in_use () ? pthread_create (THREADP, NULL, FUNC, ARG) : ENOSYS)
+# define glthread_sigmask(HOW, SET, OSET) \
+    (pthread_in_use () ? pthread_sigmask (HOW, SET, OSET) : 0)
+# define glthread_join(THREAD, RETVALP) \
+    (pthread_in_use () ? pthread_join (THREAD, RETVALP) : 0)
+# ifdef PTW32_VERSION
+   /* In pthreads-win32, pthread_t is a struct with a pointer field 'p' and
+      other fields.  */
+#  define gl_thread_self() \
+     (pthread_in_use () ? pthread_self () : gl_null_thread)
+#  define gl_thread_self_pointer() \
+     (pthread_in_use () ? pthread_self ().p : NULL)
+extern const gl_thread_t gl_null_thread;
+# elif defined __MVS__
+   /* On IBM z/OS, pthread_t is a struct with an 8-byte '__' field.
+      The first three bytes of this field appear to uniquely identify a
+      pthread_t, though not necessarily representing a pointer.  */
+#  define gl_thread_self() \
+     (pthread_in_use () ? pthread_self () : gl_null_thread)
+#  define gl_thread_self_pointer() \
+     (pthread_in_use () ? *((void **) pthread_self ().__) : NULL)
+extern const gl_thread_t gl_null_thread;
+# else
+#  define gl_thread_self() \
+     (pthread_in_use () ? pthread_self () : (pthread_t) 0)
+#  define gl_thread_self_pointer() \
+     (pthread_in_use () ? (void *) pthread_self () : NULL)
+# endif
+# define gl_thread_exit(RETVAL) \
+    (void) (pthread_in_use () ? (pthread_exit (RETVAL), 0) : 0)
+
+# if HAVE_PTHREAD_ATFORK
+#  define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) \
+     (pthread_in_use () ? pthread_atfork (PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) : 0)
+# else
+#  define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
+# endif
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_WINDOWS_THREADS
+
+# define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+# include <windows.h>
+
+# include "windows-thread.h"
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+/* -------------------------- gl_thread_t datatype -------------------------- */
+
+typedef glwthread_thread_t gl_thread_t;
+# define glthread_create(THREADP, FUNC, ARG) \
+    glwthread_thread_create (THREADP, 0, FUNC, ARG)
+# define glthread_sigmask(HOW, SET, OSET) \
+    /* unsupported */ 0
+# define glthread_join(THREAD, RETVALP) \
+    glwthread_thread_join (THREAD, RETVALP)
+# define gl_thread_self() \
+    glwthread_thread_self ()
+# define gl_thread_self_pointer() \
+    gl_thread_self ()
+# define gl_thread_exit(RETVAL) \
+    glwthread_thread_exit (RETVAL)
+# define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if !(USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS)
+
+/* Provide dummy implementation if threads are not supported.  */
+
+typedef int gl_thread_t;
+# define glthread_create(THREADP, FUNC, ARG) ENOSYS
+# define glthread_sigmask(HOW, SET, OSET) 0
+# define glthread_join(THREAD, RETVALP) 0
+# define gl_thread_self() 0
+# define gl_thread_self_pointer() \
+    ((void *) gl_thread_self ())
+# define gl_thread_exit(RETVAL) (void)0
+# define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
+
+#endif
+
+/* ========================================================================= */
+
+/* Macros with built-in error handling.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern gl_thread_t gl_thread_create (void *(*func) (void *arg), void *arg);
+#define gl_thread_sigmask(HOW, SET, OSET)     \
+   do                                         \
+     {                                        \
+       if (glthread_sigmask (HOW, SET, OSET)) \
+         abort ();                            \
+     }                                        \
+   while (0)
+#define gl_thread_join(THREAD, RETVAL)     \
+   do                                      \
+     {                                     \
+       if (glthread_join (THREAD, RETVAL)) \
+         abort ();                         \
+     }                                     \
+   while (0)
+#define gl_thread_atfork(PREPARE, PARENT, CHILD)     \
+   do                                                \
+     {                                               \
+       if (glthread_atfork (PREPARE, PARENT, CHILD)) \
+         abort ();                                   \
+     }                                               \
+   while (0)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GLTHREAD_THREAD_H */
diff --git a/src/grep/gnulib-tests/gnulib.mk b/src/grep/gnulib-tests/gnulib.mk
new file mode 100644
index 0000000..b8d39ae
--- /dev/null
+++ b/src/grep/gnulib-tests/gnulib.mk
@@ -0,0 +1,2415 @@
+## DO NOT EDIT! GENERATED AUTOMATICALLY!
+## Process this file with automake to produce Makefile.in.
+# Copyright (C) 2002-2021 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file.  If not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License,
+# this file may be distributed as part of a program that
+# contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+
+AUTOMAKE_OPTIONS = 1.11 foreign subdir-objects
+
+SUBDIRS = .
+TESTS =
+XFAIL_TESTS =
+TESTS_ENVIRONMENT =
+noinst_PROGRAMS =
+check_PROGRAMS =
+EXTRA_PROGRAMS =
+noinst_HEADERS =
+noinst_LIBRARIES =
+check_LIBRARIES = libtests.a
+EXTRA_DIST =
+BUILT_SOURCES =
+SUFFIXES =
+MOSTLYCLEANFILES = core *.stackdump
+MOSTLYCLEANDIRS =
+CLEANFILES =
+DISTCLEANFILES =
+MAINTAINERCLEANFILES =
+
+CFLAGS = @GL_CFLAG_ALLOW_WARNINGS@ @CFLAGS@
+CXXFLAGS = @GL_CXXFLAG_ALLOW_WARNINGS@ @CXXFLAGS@
+
+AM_CPPFLAGS = \
+  -D@gltests_WITNESS@=1 \
+  -I. -I$(srcdir) \
+  -I.. -I$(srcdir)/.. \
+  -I../lib -I$(srcdir)/../lib
+
+LDADD = libtests.a ../lib/libgreputils.a libtests.a ../lib/libgreputils.a libtests.a $(LIBTESTS_LIBDEPS)
+
+libtests_a_SOURCES =
+libtests_a_LIBADD = $(gltests_LIBOBJS)
+libtests_a_DEPENDENCIES = $(gltests_LIBOBJS)
+EXTRA_libtests_a_SOURCES =
+AM_LIBTOOLFLAGS = --preserve-dup-deps
+
+TESTS_ENVIRONMENT += EXEEXT='@EXEEXT@' srcdir='$(srcdir)'
+
+## begin gnulib module accept
+
+
+EXTRA_DIST += accept.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += accept.c
+
+## end   gnulib module accept
+
+## begin gnulib module accept-tests
+
+TESTS += test-accept
+check_PROGRAMS += test-accept
+test_accept_LDADD = $(LDADD) @LIBSOCKET@
+EXTRA_DIST += test-accept.c signature.h macros.h
+
+## end   gnulib module accept-tests
+
+## begin gnulib module alignof-tests
+
+TESTS += test-alignof
+check_PROGRAMS += test-alignof
+
+EXTRA_DIST += test-alignof.c
+
+## end   gnulib module alignof-tests
+
+## begin gnulib module alloca-opt-tests
+
+TESTS += test-alloca-opt
+check_PROGRAMS += test-alloca-opt
+
+EXTRA_DIST += test-alloca-opt.c
+
+## end   gnulib module alloca-opt-tests
+
+## begin gnulib module argmatch-tests
+
+TESTS += test-argmatch
+check_PROGRAMS += test-argmatch
+test_argmatch_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+
+EXTRA_DIST += test-argmatch.c macros.h
+
+## end   gnulib module argmatch-tests
+
+## begin gnulib module arpa_inet
+
+BUILT_SOURCES += arpa/inet.h
+
+# We need the following in order to create <arpa/inet.h> when the system
+# doesn't have one.
+arpa/inet.h: arpa_inet.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H) $(ARG_NONNULL_H)
+	$(AM_V_at)$(MKDIR_P) arpa
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''HAVE_FEATURES_H''@|$(HAVE_FEATURES_H)|g' \
+	      -e 's|@''NEXT_ARPA_INET_H''@|$(NEXT_ARPA_INET_H)|g' \
+	      -e 's|@''HAVE_ARPA_INET_H''@|$(HAVE_ARPA_INET_H)|g' \
+	      -e 's/@''GNULIB_INET_NTOP''@/$(GL_GNULIB_INET_NTOP)/g' \
+	      -e 's/@''GNULIB_INET_PTON''@/$(GL_GNULIB_INET_PTON)/g' \
+	      -e 's|@''HAVE_WS2TCPIP_H''@|$(HAVE_WS2TCPIP_H)|g' \
+	      -e 's|@''HAVE_DECL_INET_NTOP''@|$(HAVE_DECL_INET_NTOP)|g' \
+	      -e 's|@''HAVE_DECL_INET_PTON''@|$(HAVE_DECL_INET_PTON)|g' \
+	      -e 's|@''REPLACE_INET_NTOP''@|$(REPLACE_INET_NTOP)|g' \
+	      -e 's|@''REPLACE_INET_PTON''@|$(REPLACE_INET_PTON)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/arpa_inet.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += arpa/inet.h arpa/inet.h-t
+MOSTLYCLEANDIRS += arpa
+
+EXTRA_DIST += arpa_inet.in.h
+
+## end   gnulib module arpa_inet
+
+## begin gnulib module arpa_inet-tests
+
+TESTS += test-arpa_inet
+check_PROGRAMS += test-arpa_inet
+EXTRA_DIST += test-arpa_inet.c
+
+## end   gnulib module arpa_inet-tests
+
+## begin gnulib module binary-io-tests
+
+TESTS += test-binary-io.sh
+check_PROGRAMS += test-binary-io
+
+EXTRA_DIST += test-binary-io.sh test-binary-io.c macros.h
+
+## end   gnulib module binary-io-tests
+
+## begin gnulib module bind
+
+
+EXTRA_DIST += bind.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += bind.c
+
+## end   gnulib module bind
+
+## begin gnulib module bind-tests
+
+TESTS += test-bind
+check_PROGRAMS += test-bind
+test_bind_LDADD = $(LDADD) @LIBSOCKET@ $(INET_PTON_LIB)
+EXTRA_DIST += test-bind.c signature.h macros.h
+
+## end   gnulib module bind-tests
+
+## begin gnulib module bitrotate-tests
+
+TESTS += test-bitrotate
+check_PROGRAMS += test-bitrotate
+EXTRA_DIST += test-bitrotate.c macros.h
+
+## end   gnulib module bitrotate-tests
+
+## begin gnulib module btowc-tests
+
+TESTS += test-btowc1.sh test-btowc2.sh
+TESTS_ENVIRONMENT += LOCALE_FR='@LOCALE_FR@' LOCALE_FR_UTF8='@LOCALE_FR_UTF8@'
+check_PROGRAMS += test-btowc
+test_btowc_LDADD = $(LDADD) $(LIB_SETLOCALE)
+EXTRA_DIST += test-btowc1.sh test-btowc2.sh test-btowc.c signature.h macros.h
+
+## end   gnulib module btowc-tests
+
+## begin gnulib module c-ctype-tests
+
+TESTS += test-c-ctype
+check_PROGRAMS += test-c-ctype
+test_c_ctype_LDADD = $(LDADD) $(LIB_SETLOCALE)
+EXTRA_DIST += test-c-ctype.c macros.h
+
+## end   gnulib module c-ctype-tests
+
+## begin gnulib module c-stack-tests
+
+TESTS += test-c-stack.sh test-c-stack2.sh
+TESTS_ENVIRONMENT += LIBSIGSEGV='@LIBSIGSEGV@'
+check_PROGRAMS += test-c-stack
+test_c_stack_LDADD = $(LDADD) $(LIBCSTACK) @LIBINTL@
+MOSTLYCLEANFILES += t-c-stack.tmp t-c-stack2.tmp
+EXTRA_DIST += test-c-stack.c test-c-stack.sh test-c-stack2.sh macros.h
+
+## end   gnulib module c-stack-tests
+
+## begin gnulib module c-strcase-tests
+
+TESTS += test-c-strcase.sh
+TESTS_ENVIRONMENT += LOCALE_FR='@LOCALE_FR@' LOCALE_TR_UTF8='@LOCALE_TR_UTF8@'
+check_PROGRAMS += test-c-strcasecmp test-c-strncasecmp
+test_c_strcasecmp_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_c_strncasecmp_LDADD = $(LDADD) $(LIB_SETLOCALE)
+EXTRA_DIST += test-c-strcase.sh test-c-strcasecmp.c test-c-strncasecmp.c macros.h
+
+## end   gnulib module c-strcase-tests
+
+## begin gnulib module calloc-gnu-tests
+
+TESTS += test-calloc-gnu
+check_PROGRAMS += test-calloc-gnu
+EXTRA_DIST += test-calloc-gnu.c macros.h
+
+## end   gnulib module calloc-gnu-tests
+
+## begin gnulib module chdir-tests
+
+TESTS += test-chdir
+check_PROGRAMS += test-chdir
+EXTRA_DIST += test-chdir.c signature.h macros.h
+
+## end   gnulib module chdir-tests
+
+## begin gnulib module cloexec-tests
+
+TESTS += test-cloexec
+check_PROGRAMS += test-cloexec
+EXTRA_DIST += test-cloexec.c macros.h
+
+## end   gnulib module cloexec-tests
+
+## begin gnulib module close-tests
+
+TESTS += test-close
+check_PROGRAMS += test-close
+EXTRA_DIST += test-close.c signature.h macros.h
+
+## end   gnulib module close-tests
+
+## begin gnulib module connect
+
+
+EXTRA_DIST += connect.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += connect.c
+
+## end   gnulib module connect
+
+## begin gnulib module connect-tests
+
+TESTS += test-connect
+check_PROGRAMS += test-connect
+test_connect_LDADD = $(LDADD) @LIBSOCKET@ $(INET_PTON_LIB)
+EXTRA_DIST += test-connect.c signature.h macros.h
+
+## end   gnulib module connect-tests
+
+## begin gnulib module ctype-tests
+
+TESTS += test-ctype
+check_PROGRAMS += test-ctype
+EXTRA_DIST += test-ctype.c
+
+## end   gnulib module ctype-tests
+
+## begin gnulib module dfa-tests
+
+TESTS += \
+  test-dfa-invalid-char-class.sh \
+  test-dfa-invalid-merge.sh \
+  test-dfa-match.sh
+
+check_PROGRAMS += test-dfa-match-aux
+test_dfa_match_aux_LDADD = $(LDADD) $(LIB_SETLOCALE) @LIBINTL@ $(LIB_MBRTOWC)
+EXTRA_DIST += test-dfa-match.sh test-dfa-match-aux.c test-dfa-invalid-char-class.sh test-dfa-invalid-merge.sh
+
+## end   gnulib module dfa-tests
+
+## begin gnulib module dirent-tests
+
+TESTS += test-dirent
+check_PROGRAMS += test-dirent
+EXTRA_DIST += test-dirent.c
+
+## end   gnulib module dirent-tests
+
+## begin gnulib module dup-tests
+
+TESTS += test-dup
+check_PROGRAMS += test-dup
+EXTRA_DIST += test-dup.c signature.h macros.h
+
+## end   gnulib module dup-tests
+
+## begin gnulib module dup2-tests
+
+TESTS += test-dup2
+check_PROGRAMS += test-dup2
+EXTRA_DIST += test-dup2.c signature.h macros.h
+
+## end   gnulib module dup2-tests
+
+## begin gnulib module dynarray-tests
+
+TESTS += test-dynarray
+check_PROGRAMS += test-dynarray
+EXTRA_DIST += test-dynarray.c macros.h
+
+## end   gnulib module dynarray-tests
+
+## begin gnulib module environ-tests
+
+TESTS += test-environ
+check_PROGRAMS += test-environ
+
+EXTRA_DIST += test-environ.c
+
+## end   gnulib module environ-tests
+
+## begin gnulib module errno-tests
+
+TESTS += test-errno
+check_PROGRAMS += test-errno
+
+EXTRA_DIST += test-errno.c
+
+## end   gnulib module errno-tests
+
+## begin gnulib module exclude-tests
+
+TESTS += \
+ test-exclude1.sh\
+ test-exclude2.sh\
+ test-exclude3.sh\
+ test-exclude4.sh\
+ test-exclude5.sh\
+ test-exclude6.sh\
+ test-exclude7.sh\
+ test-exclude8.sh
+
+check_PROGRAMS += test-exclude
+test_exclude_LDADD = $(LDADD) $(LIBUNISTRING) @LIBINTL@ $(LIB_MBRTOWC) $(LIBTHREAD)
+EXTRA_DIST += test-exclude.c test-exclude1.sh test-exclude2.sh test-exclude3.sh test-exclude4.sh test-exclude5.sh test-exclude6.sh test-exclude7.sh test-exclude8.sh
+
+## end   gnulib module exclude-tests
+
+## begin gnulib module fchdir-tests
+
+TESTS += test-fchdir
+check_PROGRAMS += test-fchdir
+test_fchdir_LDADD = $(LDADD) $(LIBINTL)
+EXTRA_DIST += test-fchdir.c signature.h macros.h
+
+## end   gnulib module fchdir-tests
+
+## begin gnulib module fcntl-h-tests
+
+TESTS += test-fcntl-h
+check_PROGRAMS += test-fcntl-h
+EXTRA_DIST += test-fcntl-h.c
+
+## end   gnulib module fcntl-h-tests
+
+## begin gnulib module fcntl-safer-tests
+
+TESTS += test-fcntl-safer
+check_PROGRAMS += test-fcntl-safer
+EXTRA_DIST += test-open.h test-fcntl-safer.c macros.h
+
+## end   gnulib module fcntl-safer-tests
+
+## begin gnulib module fcntl-tests
+
+TESTS += test-fcntl
+check_PROGRAMS += test-fcntl
+EXTRA_DIST += test-fcntl.c signature.h macros.h
+
+## end   gnulib module fcntl-tests
+
+## begin gnulib module fdopen
+
+
+EXTRA_DIST += fdopen.c
+
+EXTRA_libtests_a_SOURCES += fdopen.c
+
+## end   gnulib module fdopen
+
+## begin gnulib module fdopen-tests
+
+TESTS += test-fdopen
+check_PROGRAMS += test-fdopen
+EXTRA_DIST += test-fdopen.c signature.h macros.h
+
+## end   gnulib module fdopen-tests
+
+## begin gnulib module fdopendir-tests
+
+TESTS += test-fdopendir
+check_PROGRAMS += test-fdopendir
+test_fdopendir_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-fdopendir.c signature.h macros.h
+
+## end   gnulib module fdopendir-tests
+
+## begin gnulib module fgetc-tests
+
+TESTS += test-fgetc
+check_PROGRAMS += test-fgetc
+EXTRA_DIST += test-fgetc.c signature.h macros.h
+
+## end   gnulib module fgetc-tests
+
+## begin gnulib module float
+
+BUILT_SOURCES += $(FLOAT_H)
+
+# We need the following in order to create <float.h> when the system
+# doesn't have one that works with the given compiler.
+if GL_GENERATE_FLOAT_H
+float.h: float.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_FLOAT_H''@|$(NEXT_FLOAT_H)|g' \
+	      -e 's|@''REPLACE_ITOLD''@|$(REPLACE_ITOLD)|g' \
+	      < $(srcdir)/float.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+else
+float.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += float.h float.h-t
+
+EXTRA_DIST += float.c float.in.h itold.c
+
+EXTRA_libtests_a_SOURCES += float.c itold.c
+
+## end   gnulib module float
+
+## begin gnulib module float-tests
+
+TESTS += test-float
+check_PROGRAMS += test-float
+EXTRA_DIST += test-float.c macros.h
+
+## end   gnulib module float-tests
+
+## begin gnulib module fnmatch-h-tests
+
+TESTS += test-fnmatch-h
+check_PROGRAMS += test-fnmatch-h
+EXTRA_DIST += test-fnmatch-h.c
+
+## end   gnulib module fnmatch-h-tests
+
+## begin gnulib module fnmatch-tests
+
+TESTS += test-fnmatch
+check_PROGRAMS += test-fnmatch
+test_fnmatch_LDADD = $(LDADD) $(LIB_MBRTOWC)
+EXTRA_DIST += test-fnmatch.c signature.h macros.h
+
+## end   gnulib module fnmatch-tests
+
+## begin gnulib module fopen-gnu-tests
+
+TESTS += test-fopen-gnu
+check_PROGRAMS += test-fopen-gnu
+EXTRA_DIST += test-fopen-gnu.c macros.h
+
+## end   gnulib module fopen-gnu-tests
+
+## begin gnulib module fopen-tests
+
+TESTS += test-fopen
+check_PROGRAMS += test-fopen
+
+EXTRA_DIST += test-fopen.h test-fopen.c signature.h macros.h
+
+## end   gnulib module fopen-tests
+
+## begin gnulib module fpending-tests
+
+TESTS += test-fpending.sh
+check_PROGRAMS += test-fpending
+MOSTLYCLEANFILES += test-fpending.t
+EXTRA_DIST += test-fpending.c test-fpending.sh macros.h
+
+## end   gnulib module fpending-tests
+
+## begin gnulib module fpucw
+
+
+EXTRA_DIST += fpucw.h
+
+## end   gnulib module fpucw
+
+## begin gnulib module fputc-tests
+
+TESTS += test-fputc
+check_PROGRAMS += test-fputc
+EXTRA_DIST += test-fputc.c signature.h macros.h
+
+## end   gnulib module fputc-tests
+
+## begin gnulib module fread-tests
+
+TESTS += test-fread
+check_PROGRAMS += test-fread
+EXTRA_DIST += test-fread.c signature.h macros.h
+
+## end   gnulib module fread-tests
+
+## begin gnulib module free-posix-tests
+
+TESTS += test-free
+check_PROGRAMS += test-free
+EXTRA_DIST += test-free.c macros.h
+
+## end   gnulib module free-posix-tests
+
+## begin gnulib module fstat-tests
+
+TESTS += test-fstat
+check_PROGRAMS += test-fstat
+EXTRA_DIST += test-fstat.c signature.h macros.h
+
+## end   gnulib module fstat-tests
+
+## begin gnulib module fstatat-tests
+
+TESTS += test-fstatat
+check_PROGRAMS += test-fstatat
+test_fstatat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-fstatat.c test-lstat.h test-stat.h signature.h macros.h
+
+## end   gnulib module fstatat-tests
+
+## begin gnulib module ftruncate
+
+
+EXTRA_DIST += ftruncate.c
+
+EXTRA_libtests_a_SOURCES += ftruncate.c
+
+## end   gnulib module ftruncate
+
+## begin gnulib module ftruncate-tests
+
+TESTS += test-ftruncate.sh
+check_PROGRAMS += test-ftruncate
+EXTRA_DIST += test-ftruncate.c test-ftruncate.sh signature.h macros.h
+
+## end   gnulib module ftruncate-tests
+
+## begin gnulib module fwrite-tests
+
+TESTS += test-fwrite
+check_PROGRAMS += test-fwrite
+EXTRA_DIST += test-fwrite.c signature.h macros.h
+
+## end   gnulib module fwrite-tests
+
+## begin gnulib module getcwd-lgpl-tests
+
+TESTS += test-getcwd-lgpl
+check_PROGRAMS += test-getcwd-lgpl
+test_getcwd_lgpl_LDADD = $(LDADD) $(LIBINTL)
+EXTRA_DIST += test-getcwd-lgpl.c signature.h macros.h
+
+## end   gnulib module getcwd-lgpl-tests
+
+## begin gnulib module getdtablesize-tests
+
+TESTS += test-getdtablesize
+check_PROGRAMS += test-getdtablesize
+EXTRA_DIST += test-getdtablesize.c signature.h macros.h
+
+## end   gnulib module getdtablesize-tests
+
+## begin gnulib module getopt-gnu-tests
+
+TESTS += test-getopt-gnu
+check_PROGRAMS += test-getopt-gnu
+test_getopt_gnu_LDADD = $(LDADD) $(LIBINTL)
+EXTRA_DIST += macros.h signature.h test-getopt-gnu.c test-getopt-main.h test-getopt.h test-getopt_long.h
+
+## end   gnulib module getopt-gnu-tests
+
+## begin gnulib module getopt-posix-tests
+
+TESTS += test-getopt-posix
+check_PROGRAMS += test-getopt-posix
+test_getopt_posix_LDADD = $(LDADD) $(LIBINTL)
+EXTRA_DIST += macros.h signature.h test-getopt-posix.c test-getopt-main.h test-getopt.h
+
+## end   gnulib module getopt-posix-tests
+
+## begin gnulib module getprogname-tests
+
+DEFS += -DEXEEXT=\"@EXEEXT@\"
+TESTS += test-getprogname
+check_PROGRAMS += test-getprogname
+test_getprogname_LDADD = $(LDADD)
+EXTRA_DIST += test-getprogname.c
+
+## end   gnulib module getprogname-tests
+
+## begin gnulib module gettimeofday
+
+
+EXTRA_DIST += gettimeofday.c
+
+EXTRA_libtests_a_SOURCES += gettimeofday.c
+
+## end   gnulib module gettimeofday
+
+## begin gnulib module gettimeofday-tests
+
+TESTS += test-gettimeofday
+check_PROGRAMS += test-gettimeofday
+
+EXTRA_DIST += signature.h test-gettimeofday.c
+
+## end   gnulib module gettimeofday-tests
+
+## begin gnulib module gperf
+
+GPERF = gperf
+V_GPERF = $(V_GPERF_@AM_V@)
+V_GPERF_ = $(V_GPERF_@AM_DEFAULT_V@)
+V_GPERF_0 = @echo "  GPERF   " $@;
+
+## end   gnulib module gperf
+
+## begin gnulib module hard-locale-tests
+
+TESTS += test-hard-locale
+check_PROGRAMS += test-hard-locale
+test_hard_locale_LDADD = $(LDADD) $(LIB_SETLOCALE) @LIB_HARD_LOCALE@
+# We cannot call this program 'locale', because the C++ compiler on Mac OS X
+# would then barf upon '#include <locale>'. So, call it 'current-locale'.
+noinst_PROGRAMS += current-locale
+current_locale_SOURCES = locale.c
+EXTRA_DIST += test-hard-locale.c locale.c
+
+## end   gnulib module hard-locale-tests
+
+## begin gnulib module hash-pjw
+
+libtests_a_SOURCES += hash-pjw.h hash-pjw.c
+
+## end   gnulib module hash-pjw
+
+## begin gnulib module hash-tests
+
+TESTS += test-hash
+check_PROGRAMS += test-hash
+EXTRA_DIST += test-hash.c macros.h
+
+## end   gnulib module hash-tests
+
+## begin gnulib module i-ring-tests
+
+TESTS += test-i-ring
+check_PROGRAMS += test-i-ring
+EXTRA_DIST += test-i-ring.c macros.h
+
+## end   gnulib module i-ring-tests
+
+## begin gnulib module iconv-h-tests
+
+TESTS += test-iconv-h
+check_PROGRAMS += test-iconv-h
+EXTRA_DIST += test-iconv-h.c
+
+## end   gnulib module iconv-h-tests
+
+## begin gnulib module iconv-tests
+
+TESTS += test-iconv
+check_PROGRAMS += test-iconv
+test_iconv_LDADD = $(LDADD) @LIBICONV@
+
+EXTRA_DIST += test-iconv.c signature.h macros.h
+
+## end   gnulib module iconv-tests
+
+## begin gnulib module ignore-value-tests
+
+TESTS += test-ignore-value
+check_PROGRAMS += test-ignore-value
+EXTRA_DIST += test-ignore-value.c
+
+## end   gnulib module ignore-value-tests
+
+## begin gnulib module inet_pton
+
+
+EXTRA_DIST += inet_pton.c
+
+EXTRA_libtests_a_SOURCES += inet_pton.c
+
+## end   gnulib module inet_pton
+
+## begin gnulib module inet_pton-tests
+
+TESTS += test-inet_pton
+check_PROGRAMS += test-inet_pton
+test_inet_pton_LDADD = $(LDADD) @INET_PTON_LIB@
+EXTRA_DIST += test-inet_pton.c signature.h macros.h
+
+## end   gnulib module inet_pton-tests
+
+## begin gnulib module intprops-tests
+
+TESTS += test-intprops
+check_PROGRAMS += test-intprops
+EXTRA_DIST += test-intprops.c macros.h
+
+## end   gnulib module intprops-tests
+
+## begin gnulib module inttostr
+
+libtests_a_SOURCES +=    imaxtostr.c    inttostr.c    offtostr.c    uinttostr.c    umaxtostr.c
+
+EXTRA_DIST += anytostr.c inttostr.h
+
+EXTRA_libtests_a_SOURCES += anytostr.c
+
+## end   gnulib module inttostr
+
+## begin gnulib module inttostr-tests
+
+TESTS += test-inttostr
+check_PROGRAMS += test-inttostr
+EXTRA_DIST += macros.h test-inttostr.c
+
+## end   gnulib module inttostr-tests
+
+## begin gnulib module inttypes-tests
+
+TESTS += test-inttypes
+check_PROGRAMS += test-inttypes
+EXTRA_DIST += test-inttypes.c
+
+## end   gnulib module inttypes-tests
+
+## begin gnulib module ioctl
+
+
+EXTRA_DIST += ioctl.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += ioctl.c
+
+## end   gnulib module ioctl
+
+## begin gnulib module ioctl-tests
+
+TESTS += test-ioctl
+check_PROGRAMS += test-ioctl
+EXTRA_DIST += test-ioctl.c signature.h macros.h
+
+## end   gnulib module ioctl-tests
+
+## begin gnulib module isatty-tests
+
+TESTS += test-isatty
+check_PROGRAMS += test-isatty
+EXTRA_DIST += test-isatty.c signature.h macros.h
+
+## end   gnulib module isatty-tests
+
+## begin gnulib module isblank-tests
+
+TESTS += test-isblank
+check_PROGRAMS += test-isblank
+EXTRA_DIST += test-isblank.c signature.h macros.h
+
+## end   gnulib module isblank-tests
+
+## begin gnulib module iswblank-tests
+
+TESTS += test-iswblank
+check_PROGRAMS += test-iswblank
+EXTRA_DIST += test-iswblank.c macros.h
+
+## end   gnulib module iswblank-tests
+
+## begin gnulib module iswdigit-tests
+
+TESTS += test-iswdigit.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+  LOCALE_JA='@LOCALE_JA@' \
+  LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-iswdigit
+test_iswdigit_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-iswdigit.sh test-iswdigit.c signature.h macros.h
+
+## end   gnulib module iswdigit-tests
+
+## begin gnulib module iswxdigit-tests
+
+TESTS += test-iswxdigit.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+  LOCALE_JA='@LOCALE_JA@' \
+  LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-iswxdigit
+test_iswxdigit_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-iswxdigit.sh test-iswxdigit.c signature.h macros.h
+
+## end   gnulib module iswxdigit-tests
+
+## begin gnulib module langinfo-tests
+
+TESTS += test-langinfo
+check_PROGRAMS += test-langinfo
+EXTRA_DIST += test-langinfo.c
+
+## end   gnulib module langinfo-tests
+
+## begin gnulib module limits-h-tests
+
+TESTS += test-limits-h
+check_PROGRAMS += test-limits-h
+EXTRA_DIST += test-limits-h.c
+
+## end   gnulib module limits-h-tests
+
+## begin gnulib module listen
+
+
+EXTRA_DIST += listen.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += listen.c
+
+## end   gnulib module listen
+
+## begin gnulib module listen-tests
+
+TESTS += test-listen
+check_PROGRAMS += test-listen
+test_listen_LDADD = $(LDADD) @LIBSOCKET@
+EXTRA_DIST += test-listen.c signature.h macros.h
+
+## end   gnulib module listen-tests
+
+## begin gnulib module localcharset-tests
+
+noinst_PROGRAMS += test-localcharset
+test_localcharset_LDADD = $(LDADD) $(LIB_SETLOCALE)
+EXTRA_DIST += test-localcharset.c
+
+## end   gnulib module localcharset-tests
+
+## begin gnulib module locale-tests
+
+TESTS += test-locale
+check_PROGRAMS += test-locale
+EXTRA_DIST += test-locale.c
+
+## end   gnulib module locale-tests
+
+## begin gnulib module localeconv-tests
+
+TESTS += test-localeconv
+check_PROGRAMS += test-localeconv
+EXTRA_DIST += test-localeconv.c signature.h macros.h
+
+## end   gnulib module localeconv-tests
+
+## begin gnulib module localename
+
+libtests_a_SOURCES += localename.c localename-table.c
+
+EXTRA_DIST += localename-table.h localename.h
+
+## end   gnulib module localename
+
+## begin gnulib module localename-tests
+
+TESTS += test-localename
+check_PROGRAMS += test-localename
+test_localename_LDADD = $(LDADD) $(LIB_SETLOCALE) @INTL_MACOSX_LIBS@ $(LIBTHREAD)
+
+EXTRA_DIST += test-localename.c macros.h
+
+## end   gnulib module localename-tests
+
+## begin gnulib module lseek-tests
+
+TESTS += test-lseek.sh
+check_PROGRAMS += test-lseek
+EXTRA_DIST += test-lseek.c test-lseek.sh signature.h macros.h
+
+## end   gnulib module lseek-tests
+
+## begin gnulib module lstat-tests
+
+TESTS += test-lstat
+check_PROGRAMS += test-lstat
+EXTRA_DIST += test-lstat.h test-lstat.c signature.h macros.h
+
+## end   gnulib module lstat-tests
+
+## begin gnulib module malloc-gnu-tests
+
+TESTS += test-malloc-gnu
+check_PROGRAMS += test-malloc-gnu
+EXTRA_DIST += test-malloc-gnu.c macros.h
+
+## end   gnulib module malloc-gnu-tests
+
+## begin gnulib module malloca-tests
+
+TESTS += test-malloca
+check_PROGRAMS += test-malloca
+
+EXTRA_DIST += test-malloca.c
+
+## end   gnulib module malloca-tests
+
+## begin gnulib module mbscasecmp-tests
+
+TESTS += test-mbscasecmp.sh
+TESTS_ENVIRONMENT += LOCALE_TR_UTF8='@LOCALE_TR_UTF8@'
+check_PROGRAMS += test-mbscasecmp
+test_mbscasecmp_LDADD = $(LDADD) $(LIBUNISTRING) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-mbscasecmp.sh test-mbscasecmp.c macros.h
+
+## end   gnulib module mbscasecmp-tests
+
+## begin gnulib module mbsinit-tests
+
+TESTS += test-mbsinit.sh
+TESTS_ENVIRONMENT += LOCALE_FR_UTF8='@LOCALE_FR_UTF8@'
+check_PROGRAMS += test-mbsinit
+test_mbsinit_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-mbsinit.sh test-mbsinit.c signature.h macros.h
+
+## end   gnulib module mbsinit-tests
+
+## begin gnulib module mbsrtowcs-tests
+
+TESTS += test-mbsrtowcs1.sh test-mbsrtowcs2.sh test-mbsrtowcs3.sh test-mbsrtowcs4.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+  LOCALE_JA='@LOCALE_JA@' \
+  LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-mbsrtowcs
+test_mbsrtowcs_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-mbsrtowcs1.sh test-mbsrtowcs2.sh test-mbsrtowcs3.sh test-mbsrtowcs4.sh test-mbsrtowcs.c signature.h macros.h
+
+## end   gnulib module mbsrtowcs-tests
+
+## begin gnulib module mbsstr-tests
+
+TESTS += test-mbsstr1 test-mbsstr2.sh test-mbsstr3.sh
+TESTS_ENVIRONMENT += LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-mbsstr1 test-mbsstr2 test-mbsstr3
+test_mbsstr1_LDADD = $(LDADD) $(LIBUNISTRING) $(LIB_MBRTOWC)
+test_mbsstr2_LDADD = $(LDADD) $(LIBUNISTRING) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+test_mbsstr3_LDADD = $(LDADD) $(LIBUNISTRING) $(LIB_SETLOCALE) $(LIB_MBRTOWC)
+EXTRA_DIST += test-mbsstr1.c test-mbsstr2.sh test-mbsstr2.c test-mbsstr3.sh test-mbsstr3.c macros.h
+
+## end   gnulib module mbsstr-tests
+
+## begin gnulib module memchr-tests
+
+TESTS += test-memchr
+check_PROGRAMS += test-memchr
+EXTRA_DIST += test-memchr.c zerosize-ptr.h signature.h macros.h
+
+## end   gnulib module memchr-tests
+
+## begin gnulib module memchr2-tests
+
+TESTS += test-memchr2
+check_PROGRAMS += test-memchr2
+EXTRA_DIST += test-memchr2.c zerosize-ptr.h macros.h
+
+## end   gnulib module memchr2-tests
+
+## begin gnulib module memrchr-tests
+
+TESTS += test-memrchr
+check_PROGRAMS += test-memrchr
+EXTRA_DIST += test-memrchr.c zerosize-ptr.h signature.h macros.h
+
+## end   gnulib module memrchr-tests
+
+## begin gnulib module nanosleep
+
+
+EXTRA_DIST += nanosleep.c
+
+EXTRA_libtests_a_SOURCES += nanosleep.c
+
+## end   gnulib module nanosleep
+
+## begin gnulib module nanosleep-tests
+
+TESTS += test-nanosleep
+check_PROGRAMS += test-nanosleep
+test_nanosleep_LDADD = $(LDADD) $(LIB_NANOSLEEP)
+EXTRA_DIST += test-nanosleep.c signature.h macros.h
+
+## end   gnulib module nanosleep-tests
+
+## begin gnulib module netinet_in
+
+BUILT_SOURCES += $(NETINET_IN_H)
+
+# We need the following in order to create <netinet/in.h> when the system
+# doesn't have one.
+if GL_GENERATE_NETINET_IN_H
+netinet/in.h: netinet_in.in.h $(top_builddir)/config.status
+	$(AM_V_at)$(MKDIR_P) netinet
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_NETINET_IN_H''@|$(NEXT_NETINET_IN_H)|g' \
+	      -e 's|@''HAVE_NETINET_IN_H''@|$(HAVE_NETINET_IN_H)|g' \
+	      < $(srcdir)/netinet_in.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+else
+netinet/in.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += netinet/in.h netinet/in.h-t
+MOSTLYCLEANDIRS += netinet
+
+EXTRA_DIST += netinet_in.in.h
+
+## end   gnulib module netinet_in
+
+## begin gnulib module netinet_in-tests
+
+TESTS += test-netinet_in
+check_PROGRAMS += test-netinet_in
+EXTRA_DIST += test-netinet_in.c
+
+## end   gnulib module netinet_in-tests
+
+## begin gnulib module nl_langinfo-tests
+
+TESTS += test-nl_langinfo.sh test-nl_langinfo-mt
+TESTS_ENVIRONMENT += LOCALE_FR='@LOCALE_FR@' LOCALE_FR_UTF8='@LOCALE_FR_UTF8@'
+check_PROGRAMS += test-nl_langinfo test-nl_langinfo-mt
+test_nl_langinfo_LDADD = $(LDADD) $(LIB_SETLOCALE)
+test_nl_langinfo_mt_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIBMULTITHREAD) $(LIB_NANOSLEEP)
+EXTRA_DIST += test-nl_langinfo.sh test-nl_langinfo.c test-nl_langinfo-mt.c signature.h macros.h
+
+## end   gnulib module nl_langinfo-tests
+
+## begin gnulib module open-tests
+
+TESTS += test-open
+check_PROGRAMS += test-open
+EXTRA_DIST += test-open.h test-open.c signature.h macros.h
+
+## end   gnulib module open-tests
+
+## begin gnulib module openat-safer-tests
+
+TESTS += test-openat-safer
+check_PROGRAMS += test-openat-safer
+test_openat_safer_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-openat-safer.c macros.h
+
+## end   gnulib module openat-safer-tests
+
+## begin gnulib module openat-tests
+
+TESTS += test-openat
+check_PROGRAMS += test-openat
+test_openat_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-openat.c test-open.h signature.h macros.h
+
+## end   gnulib module openat-tests
+
+## begin gnulib module pathmax-tests
+
+TESTS += test-pathmax
+check_PROGRAMS += test-pathmax
+EXTRA_DIST += test-pathmax.c
+
+## end   gnulib module pathmax-tests
+
+## begin gnulib module perror
+
+
+EXTRA_DIST += perror.c
+
+EXTRA_libtests_a_SOURCES += perror.c
+
+## end   gnulib module perror
+
+## begin gnulib module perror-tests
+
+TESTS += test-perror.sh test-perror2
+check_PROGRAMS += test-perror test-perror2
+EXTRA_DIST += macros.h signature.h test-perror.c test-perror2.c test-perror.sh
+
+## end   gnulib module perror-tests
+
+## begin gnulib module pipe-posix-tests
+
+TESTS += test-pipe
+check_PROGRAMS += test-pipe
+EXTRA_DIST += test-pipe.c signature.h macros.h
+
+## end   gnulib module pipe-posix-tests
+
+## begin gnulib module pthread-h
+
+BUILT_SOURCES += pthread.h
+
+# We need the following in order to create <pthread.h> when the system
+# doesn't have one that works with the given compiler.
+pthread.h: pthread.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(_NORETURN_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_PTHREAD_H''@|$(HAVE_PTHREAD_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_PTHREAD_H''@|$(NEXT_PTHREAD_H)|g' \
+	      -e 's/@''GNULIB_PTHREAD_THREAD''@/$(GL_GNULIB_PTHREAD_THREAD)/g' \
+	      -e 's/@''GNULIB_PTHREAD_ONCE''@/$(GL_GNULIB_PTHREAD_ONCE)/g' \
+	      -e 's/@''GNULIB_PTHREAD_MUTEX''@/$(GL_GNULIB_PTHREAD_MUTEX)/g' \
+	      -e 's/@''GNULIB_PTHREAD_RWLOCK''@/$(GL_GNULIB_PTHREAD_RWLOCK)/g' \
+	      -e 's/@''GNULIB_PTHREAD_COND''@/$(GL_GNULIB_PTHREAD_COND)/g' \
+	      -e 's/@''GNULIB_PTHREAD_TSS''@/$(GL_GNULIB_PTHREAD_TSS)/g' \
+	      -e 's/@''GNULIB_PTHREAD_SPIN''@/$(GL_GNULIB_PTHREAD_SPIN)/g' \
+	      -e 's/@''GNULIB_PTHREAD_MUTEX_TIMEDLOCK''@/$(GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK)/g' \
+	      -e 's|@''HAVE_PTHREAD_T''@|$(HAVE_PTHREAD_T)|g' \
+	      -e 's|@''HAVE_PTHREAD_SPINLOCK_T''@|$(HAVE_PTHREAD_SPINLOCK_T)|g' \
+	      -e 's|@''HAVE_PTHREAD_CREATE_DETACHED''@|$(HAVE_PTHREAD_CREATE_DETACHED)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_RECURSIVE''@|$(HAVE_PTHREAD_MUTEX_RECURSIVE)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_ROBUST''@|$(HAVE_PTHREAD_MUTEX_ROBUST)|g' \
+	      -e 's|@''HAVE_PTHREAD_PROCESS_SHARED''@|$(HAVE_PTHREAD_PROCESS_SHARED)|g' \
+	      -e 's|@''HAVE_PTHREAD_CREATE''@|$(HAVE_PTHREAD_CREATE)|g' \
+	      -e 's|@''HAVE_PTHREAD_ATTR_INIT''@|$(HAVE_PTHREAD_ATTR_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_ATTR_GETDETACHSTATE''@|$(HAVE_PTHREAD_ATTR_GETDETACHSTATE)|g' \
+	      -e 's|@''HAVE_PTHREAD_ATTR_SETDETACHSTATE''@|$(HAVE_PTHREAD_ATTR_SETDETACHSTATE)|g' \
+	      -e 's|@''HAVE_PTHREAD_ATTR_DESTROY''@|$(HAVE_PTHREAD_ATTR_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_SELF''@|$(HAVE_PTHREAD_SELF)|g' \
+	      -e 's|@''HAVE_PTHREAD_EQUAL''@|$(HAVE_PTHREAD_EQUAL)|g' \
+	      -e 's|@''HAVE_PTHREAD_DETACH''@|$(HAVE_PTHREAD_DETACH)|g' \
+	      -e 's|@''HAVE_PTHREAD_JOIN''@|$(HAVE_PTHREAD_JOIN)|g' \
+	      -e 's|@''HAVE_PTHREAD_EXIT''@|$(HAVE_PTHREAD_EXIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_ONCE''@|$(HAVE_PTHREAD_ONCE)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_INIT''@|$(HAVE_PTHREAD_MUTEX_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEXATTR_INIT''@|$(HAVE_PTHREAD_MUTEXATTR_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEXATTR_GETTYPE''@|$(HAVE_PTHREAD_MUTEXATTR_GETTYPE)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEXATTR_SETTYPE''@|$(HAVE_PTHREAD_MUTEXATTR_SETTYPE)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEXATTR_GETROBUST''@|$(HAVE_PTHREAD_MUTEXATTR_GETROBUST)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEXATTR_SETROBUST''@|$(HAVE_PTHREAD_MUTEXATTR_SETROBUST)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEXATTR_DESTROY''@|$(HAVE_PTHREAD_MUTEXATTR_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_LOCK''@|$(HAVE_PTHREAD_MUTEX_LOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_TRYLOCK''@|$(HAVE_PTHREAD_MUTEX_TRYLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_TIMEDLOCK''@|$(HAVE_PTHREAD_MUTEX_TIMEDLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_UNLOCK''@|$(HAVE_PTHREAD_MUTEX_UNLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_MUTEX_DESTROY''@|$(HAVE_PTHREAD_MUTEX_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_INIT''@|$(HAVE_PTHREAD_RWLOCK_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCKATTR_INIT''@|$(HAVE_PTHREAD_RWLOCKATTR_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCKATTR_DESTROY''@|$(HAVE_PTHREAD_RWLOCKATTR_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_RDLOCK''@|$(HAVE_PTHREAD_RWLOCK_RDLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_WRLOCK''@|$(HAVE_PTHREAD_RWLOCK_WRLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_TRYRDLOCK''@|$(HAVE_PTHREAD_RWLOCK_TRYRDLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_TRYWRLOCK''@|$(HAVE_PTHREAD_RWLOCK_TRYWRLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK''@|$(HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK''@|$(HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_UNLOCK''@|$(HAVE_PTHREAD_RWLOCK_UNLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_RWLOCK_DESTROY''@|$(HAVE_PTHREAD_RWLOCK_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_COND_INIT''@|$(HAVE_PTHREAD_COND_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_CONDATTR_INIT''@|$(HAVE_PTHREAD_CONDATTR_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_CONDATTR_DESTROY''@|$(HAVE_PTHREAD_CONDATTR_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_COND_WAIT''@|$(HAVE_PTHREAD_COND_WAIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_COND_TIMEDWAIT''@|$(HAVE_PTHREAD_COND_TIMEDWAIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_COND_SIGNAL''@|$(HAVE_PTHREAD_COND_SIGNAL)|g' \
+	      -e 's|@''HAVE_PTHREAD_COND_BROADCAST''@|$(HAVE_PTHREAD_COND_BROADCAST)|g' \
+	      -e 's|@''HAVE_PTHREAD_COND_DESTROY''@|$(HAVE_PTHREAD_COND_DESTROY)|g' \
+	      -e 's|@''HAVE_PTHREAD_KEY_CREATE''@|$(HAVE_PTHREAD_KEY_CREATE)|g' \
+	      -e 's|@''HAVE_PTHREAD_SETSPECIFIC''@|$(HAVE_PTHREAD_SETSPECIFIC)|g' \
+	      -e 's|@''HAVE_PTHREAD_GETSPECIFIC''@|$(HAVE_PTHREAD_GETSPECIFIC)|g' \
+	      -e 's|@''HAVE_PTHREAD_KEY_DELETE''@|$(HAVE_PTHREAD_KEY_DELETE)|g' \
+	      -e 's|@''HAVE_PTHREAD_SPIN_INIT''@|$(HAVE_PTHREAD_SPIN_INIT)|g' \
+	      -e 's|@''HAVE_PTHREAD_SPIN_LOCK''@|$(HAVE_PTHREAD_SPIN_LOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_SPIN_TRYLOCK''@|$(HAVE_PTHREAD_SPIN_TRYLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_SPIN_UNLOCK''@|$(HAVE_PTHREAD_SPIN_UNLOCK)|g' \
+	      -e 's|@''HAVE_PTHREAD_SPIN_DESTROY''@|$(HAVE_PTHREAD_SPIN_DESTROY)|g' \
+	      < $(srcdir)/pthread.in.h | \
+	  sed -e 's|@''REPLACE_PTHREAD_CREATE''@|$(REPLACE_PTHREAD_CREATE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_ATTR_INIT''@|$(REPLACE_PTHREAD_ATTR_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_ATTR_GETDETACHSTATE''@|$(REPLACE_PTHREAD_ATTR_GETDETACHSTATE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_ATTR_SETDETACHSTATE''@|$(REPLACE_PTHREAD_ATTR_SETDETACHSTATE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_ATTR_DESTROY''@|$(REPLACE_PTHREAD_ATTR_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SELF''@|$(REPLACE_PTHREAD_SELF)|g' \
+	      -e 's|@''REPLACE_PTHREAD_EQUAL''@|$(REPLACE_PTHREAD_EQUAL)|g' \
+	      -e 's|@''REPLACE_PTHREAD_DETACH''@|$(REPLACE_PTHREAD_DETACH)|g' \
+	      -e 's|@''REPLACE_PTHREAD_JOIN''@|$(REPLACE_PTHREAD_JOIN)|g' \
+	      -e 's|@''REPLACE_PTHREAD_EXIT''@|$(REPLACE_PTHREAD_EXIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_ONCE''@|$(REPLACE_PTHREAD_ONCE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEX_INIT''@|$(REPLACE_PTHREAD_MUTEX_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEXATTR_INIT''@|$(REPLACE_PTHREAD_MUTEXATTR_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEXATTR_GETTYPE''@|$(REPLACE_PTHREAD_MUTEXATTR_GETTYPE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEXATTR_SETTYPE''@|$(REPLACE_PTHREAD_MUTEXATTR_SETTYPE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEXATTR_GETROBUST''@|$(REPLACE_PTHREAD_MUTEXATTR_GETROBUST)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEXATTR_SETROBUST''@|$(REPLACE_PTHREAD_MUTEXATTR_SETROBUST)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEXATTR_DESTROY''@|$(REPLACE_PTHREAD_MUTEXATTR_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEX_LOCK''@|$(REPLACE_PTHREAD_MUTEX_LOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEX_TRYLOCK''@|$(REPLACE_PTHREAD_MUTEX_TRYLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEX_TIMEDLOCK''@|$(REPLACE_PTHREAD_MUTEX_TIMEDLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEX_UNLOCK''@|$(REPLACE_PTHREAD_MUTEX_UNLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_MUTEX_DESTROY''@|$(REPLACE_PTHREAD_MUTEX_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_INIT''@|$(REPLACE_PTHREAD_RWLOCK_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCKATTR_INIT''@|$(REPLACE_PTHREAD_RWLOCKATTR_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCKATTR_DESTROY''@|$(REPLACE_PTHREAD_RWLOCKATTR_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_RDLOCK''@|$(REPLACE_PTHREAD_RWLOCK_RDLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_WRLOCK''@|$(REPLACE_PTHREAD_RWLOCK_WRLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_TRYRDLOCK''@|$(REPLACE_PTHREAD_RWLOCK_TRYRDLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_TRYWRLOCK''@|$(REPLACE_PTHREAD_RWLOCK_TRYWRLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK''@|$(REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK''@|$(REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_UNLOCK''@|$(REPLACE_PTHREAD_RWLOCK_UNLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_RWLOCK_DESTROY''@|$(REPLACE_PTHREAD_RWLOCK_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_COND_INIT''@|$(REPLACE_PTHREAD_COND_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_CONDATTR_INIT''@|$(REPLACE_PTHREAD_CONDATTR_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_CONDATTR_DESTROY''@|$(REPLACE_PTHREAD_CONDATTR_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_COND_WAIT''@|$(REPLACE_PTHREAD_COND_WAIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_COND_TIMEDWAIT''@|$(REPLACE_PTHREAD_COND_TIMEDWAIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_COND_SIGNAL''@|$(REPLACE_PTHREAD_COND_SIGNAL)|g' \
+	      -e 's|@''REPLACE_PTHREAD_COND_BROADCAST''@|$(REPLACE_PTHREAD_COND_BROADCAST)|g' \
+	      -e 's|@''REPLACE_PTHREAD_COND_DESTROY''@|$(REPLACE_PTHREAD_COND_DESTROY)|g' \
+	      -e 's|@''REPLACE_PTHREAD_KEY_CREATE''@|$(REPLACE_PTHREAD_KEY_CREATE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SETSPECIFIC''@|$(REPLACE_PTHREAD_SETSPECIFIC)|g' \
+	      -e 's|@''REPLACE_PTHREAD_GETSPECIFIC''@|$(REPLACE_PTHREAD_GETSPECIFIC)|g' \
+	      -e 's|@''REPLACE_PTHREAD_KEY_DELETE''@|$(REPLACE_PTHREAD_KEY_DELETE)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SPIN_INIT''@|$(REPLACE_PTHREAD_SPIN_INIT)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SPIN_LOCK''@|$(REPLACE_PTHREAD_SPIN_LOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SPIN_TRYLOCK''@|$(REPLACE_PTHREAD_SPIN_TRYLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SPIN_UNLOCK''@|$(REPLACE_PTHREAD_SPIN_UNLOCK)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SPIN_DESTROY''@|$(REPLACE_PTHREAD_SPIN_DESTROY)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _Noreturn/r $(_NORETURN_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += pthread.h pthread.h-t
+
+EXTRA_DIST += pthread.in.h
+
+## end   gnulib module pthread-h
+
+## begin gnulib module pthread-h-tests
+
+TESTS += test-pthread
+check_PROGRAMS += test-pthread
+EXTRA_DIST += test-pthread.c
+
+## end   gnulib module pthread-h-tests
+
+## begin gnulib module pthread-thread
+
+
+EXTRA_DIST += pthread-thread.c
+
+EXTRA_libtests_a_SOURCES += pthread-thread.c
+
+## end   gnulib module pthread-thread
+
+## begin gnulib module pthread-thread-tests
+
+TESTS += test-pthread-thread
+check_PROGRAMS += test-pthread-thread
+test_pthread_thread_LDADD = $(LDADD) @LIBPMULTITHREAD@
+EXTRA_DIST += test-pthread-thread.c macros.h
+
+## end   gnulib module pthread-thread-tests
+
+## begin gnulib module pthread_sigmask
+
+
+EXTRA_DIST += pthread_sigmask.c
+
+EXTRA_libtests_a_SOURCES += pthread_sigmask.c
+
+## end   gnulib module pthread_sigmask
+
+## begin gnulib module pthread_sigmask-tests
+
+TESTS += test-pthread_sigmask1 test-pthread_sigmask2
+check_PROGRAMS += test-pthread_sigmask1 test-pthread_sigmask2
+test_pthread_sigmask1_LDADD = $(LDADD) @LIB_PTHREAD_SIGMASK@
+test_pthread_sigmask2_LDADD = $(LDADD) @LIB_PTHREAD_SIGMASK@ @LIBMULTITHREAD@
+EXTRA_DIST += test-pthread_sigmask1.c test-pthread_sigmask2.c signature.h macros.h
+
+## end   gnulib module pthread_sigmask-tests
+
+## begin gnulib module putenv
+
+
+EXTRA_DIST += putenv.c
+
+EXTRA_libtests_a_SOURCES += putenv.c
+
+## end   gnulib module putenv
+
+## begin gnulib module quotearg-simple-tests
+
+TESTS += test-quotearg-simple
+check_PROGRAMS += test-quotearg-simple
+test_quotearg_simple_LDADD = $(LDADD) @LIBINTL@ $(LIB_MBRTOWC)
+EXTRA_DIST += test-quotearg-simple.c test-quotearg.h macros.h zerosize-ptr.h
+
+## end   gnulib module quotearg-simple-tests
+
+## begin gnulib module raise-tests
+
+TESTS += test-raise
+check_PROGRAMS += test-raise
+EXTRA_DIST += test-raise.c signature.h macros.h
+
+## end   gnulib module raise-tests
+
+## begin gnulib module rawmemchr-tests
+
+TESTS += test-rawmemchr
+check_PROGRAMS += test-rawmemchr
+EXTRA_DIST += test-rawmemchr.c zerosize-ptr.h signature.h macros.h
+
+## end   gnulib module rawmemchr-tests
+
+## begin gnulib module read-tests
+
+TESTS += test-read
+check_PROGRAMS += test-read
+EXTRA_DIST += test-read.c signature.h macros.h
+
+## end   gnulib module read-tests
+
+## begin gnulib module realloc-gnu-tests
+
+TESTS += test-realloc-gnu
+check_PROGRAMS += test-realloc-gnu
+EXTRA_DIST += test-realloc-gnu.c macros.h
+
+## end   gnulib module realloc-gnu-tests
+
+## begin gnulib module reallocarray-tests
+
+TESTS += test-reallocarray
+check_PROGRAMS += test-reallocarray
+EXTRA_DIST += test-reallocarray.c signature.h macros.h
+
+## end   gnulib module reallocarray-tests
+
+## begin gnulib module regex-tests
+
+TESTS += test-regex
+check_PROGRAMS += test-regex
+test_regex_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIB_MBRTOWC) @LIBINTL@ $(LIBTHREAD)
+EXTRA_DIST += test-regex.c macros.h
+
+## end   gnulib module regex-tests
+
+## begin gnulib module sched
+
+BUILT_SOURCES += sched.h
+
+# We need the following in order to create a replacement for <sched.h> when
+# the system doesn't have one.
+sched.h: sched.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_SCHED_H''@|$(HAVE_SCHED_H)|g' \
+	      -e 's|@''HAVE_SYS_CDEFS_H''@|$(HAVE_SYS_CDEFS_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SCHED_H''@|$(NEXT_SCHED_H)|g' \
+	      -e 's|@''HAVE_STRUCT_SCHED_PARAM''@|$(HAVE_STRUCT_SCHED_PARAM)|g' \
+	      -e 's/@''GNULIB_SCHED_YIELD''@/$(GL_GNULIB_SCHED_YIELD)/g' \
+	      -e 's|@''HAVE_SCHED_YIELD''@|$(HAVE_SCHED_YIELD)|g' \
+	      -e 's|@''REPLACE_SCHED_YIELD''@|$(REPLACE_SCHED_YIELD)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/sched.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += sched.h sched.h-t
+
+EXTRA_DIST += sched.in.h
+
+## end   gnulib module sched
+
+## begin gnulib module sched-tests
+
+TESTS += test-sched
+check_PROGRAMS += test-sched
+EXTRA_DIST += test-sched.c
+
+## end   gnulib module sched-tests
+
+## begin gnulib module select
+
+
+EXTRA_DIST += select.c
+
+EXTRA_libtests_a_SOURCES += select.c
+
+## end   gnulib module select
+
+## begin gnulib module select-tests
+
+TESTS += test-select test-select-in.sh test-select-out.sh
+# test-select-stdin has to be run by hand.
+check_PROGRAMS += test-select test-select-fd test-select-stdin
+test_select_LDADD = $(LDADD) @LIB_SELECT@ @LIBSOCKET@ $(INET_PTON_LIB)
+test_select_fd_LDADD = $(LDADD) @LIB_SELECT@
+test_select_stdin_LDADD = $(LDADD) @LIB_SELECT@
+EXTRA_DIST += macros.h signature.h test-select.c test-select.h test-select-fd.c test-select-in.sh test-select-out.sh test-select-stdin.c
+
+## end   gnulib module select-tests
+
+## begin gnulib module setenv
+
+
+EXTRA_DIST += setenv.c
+
+EXTRA_libtests_a_SOURCES += setenv.c
+
+## end   gnulib module setenv
+
+## begin gnulib module setenv-tests
+
+TESTS += test-setenv
+check_PROGRAMS += test-setenv
+EXTRA_DIST += test-setenv.c signature.h macros.h
+
+## end   gnulib module setenv-tests
+
+## begin gnulib module setlocale
+
+
+EXTRA_DIST += setlocale.c
+
+EXTRA_libtests_a_SOURCES += setlocale.c
+
+## end   gnulib module setlocale
+
+## begin gnulib module setlocale-null-tests
+
+TESTS += \
+  test-setlocale_null \
+  test-setlocale_null-mt-one \
+  test-setlocale_null-mt-all
+check_PROGRAMS += \
+  test-setlocale_null \
+  test-setlocale_null-mt-one \
+  test-setlocale_null-mt-all
+test_setlocale_null_LDADD = $(LDADD) @LIB_SETLOCALE_NULL@
+test_setlocale_null_mt_one_LDADD = $(LDADD) @LIB_SETLOCALE_NULL@ $(LIBMULTITHREAD) $(LIB_NANOSLEEP)
+test_setlocale_null_mt_all_LDADD = $(LDADD) @LIB_SETLOCALE_NULL@ $(LIBMULTITHREAD) $(LIB_NANOSLEEP)
+EXTRA_DIST += test-setlocale_null.c test-setlocale_null-mt-one.c test-setlocale_null-mt-all.c
+
+## end   gnulib module setlocale-null-tests
+
+## begin gnulib module setlocale-tests
+
+TESTS += test-setlocale1.sh test-setlocale2.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+  LOCALE_JA='@LOCALE_JA@' \
+  LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-setlocale1 test-setlocale2
+test_setlocale1_LDADD = $(LDADD) @LIB_SETLOCALE@
+test_setlocale2_LDADD = $(LDADD) @LIB_SETLOCALE@
+EXTRA_DIST += test-setlocale1.sh test-setlocale1.c test-setlocale2.sh test-setlocale2.c signature.h macros.h
+
+## end   gnulib module setlocale-tests
+
+## begin gnulib module setsockopt
+
+
+EXTRA_DIST += setsockopt.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += setsockopt.c
+
+## end   gnulib module setsockopt
+
+## begin gnulib module setsockopt-tests
+
+TESTS += test-setsockopt
+check_PROGRAMS += test-setsockopt
+test_setsockopt_LDADD = $(LDADD) @LIBSOCKET@
+EXTRA_DIST += test-setsockopt.c signature.h macros.h
+
+## end   gnulib module setsockopt-tests
+
+## begin gnulib module sigaction
+
+libtests_a_SOURCES += sig-handler.c
+
+EXTRA_DIST += sig-handler.h sigaction.c
+
+EXTRA_libtests_a_SOURCES += sigaction.c
+
+## end   gnulib module sigaction
+
+## begin gnulib module sigaction-tests
+
+TESTS += test-sigaction
+check_PROGRAMS += test-sigaction
+EXTRA_DIST += test-sigaction.c signature.h macros.h
+
+## end   gnulib module sigaction-tests
+
+## begin gnulib module signal-h-tests
+
+TESTS += test-signal-h
+check_PROGRAMS += test-signal-h
+EXTRA_DIST += test-signal-h.c
+
+## end   gnulib module signal-h-tests
+
+## begin gnulib module sigprocmask
+
+
+EXTRA_DIST += sigprocmask.c
+
+EXTRA_libtests_a_SOURCES += sigprocmask.c
+
+## end   gnulib module sigprocmask
+
+## begin gnulib module sigprocmask-tests
+
+TESTS += test-sigprocmask
+check_PROGRAMS += test-sigprocmask
+EXTRA_DIST += test-sigprocmask.c signature.h macros.h
+
+## end   gnulib module sigprocmask-tests
+
+## begin gnulib module sigsegv-tests
+
+TESTS += \
+  test-sigsegv-catch-segv1 \
+  test-sigsegv-catch-segv2 \
+  test-sigsegv-catch-stackoverflow1 \
+  test-sigsegv-catch-stackoverflow2
+check_PROGRAMS += \
+  test-sigsegv-catch-segv1 \
+  test-sigsegv-catch-segv2 \
+  test-sigsegv-catch-stackoverflow1 \
+  test-sigsegv-catch-stackoverflow2
+test_sigsegv_catch_segv1_LDADD = $(LDADD) $(LIBSIGSEGV)
+test_sigsegv_catch_segv2_LDADD = $(LDADD) $(LIBSIGSEGV)
+test_sigsegv_catch_stackoverflow1_LDADD = $(LDADD) $(LIBSIGSEGV)
+test_sigsegv_catch_stackoverflow2_LDADD = $(LDADD) $(LIBSIGSEGV)
+EXTRA_DIST += test-sigsegv-catch-segv1.c test-sigsegv-catch-segv2.c test-sigsegv-catch-stackoverflow1.c test-sigsegv-catch-stackoverflow2.c altstack-util.h mmap-anon-util.h
+
+## end   gnulib module sigsegv-tests
+
+## begin gnulib module size_max
+
+libtests_a_SOURCES += size_max.h
+
+## end   gnulib module size_max
+
+## begin gnulib module sleep
+
+
+EXTRA_DIST += sleep.c
+
+EXTRA_libtests_a_SOURCES += sleep.c
+
+## end   gnulib module sleep
+
+## begin gnulib module sleep-tests
+
+TESTS += test-sleep
+check_PROGRAMS += test-sleep
+EXTRA_DIST += test-sleep.c signature.h macros.h
+
+## end   gnulib module sleep-tests
+
+## begin gnulib module snippet/_Noreturn
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+_NORETURN_H=$(srcdir)/_Noreturn.h
+
+EXTRA_DIST += _Noreturn.h
+
+## end   gnulib module snippet/_Noreturn
+
+## begin gnulib module snippet/arg-nonnull
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+ARG_NONNULL_H=$(srcdir)/arg-nonnull.h
+
+EXTRA_DIST += arg-nonnull.h
+
+## end   gnulib module snippet/arg-nonnull
+
+## begin gnulib module snippet/c++defs
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+CXXDEFS_H=$(srcdir)/c++defs.h
+
+EXTRA_DIST += c++defs.h
+
+## end   gnulib module snippet/c++defs
+
+## begin gnulib module snippet/warn-on-use
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+WARN_ON_USE_H=$(srcdir)/warn-on-use.h
+
+EXTRA_DIST += warn-on-use.h
+
+## end   gnulib module snippet/warn-on-use
+
+## begin gnulib module snprintf
+
+
+EXTRA_DIST += snprintf.c
+
+EXTRA_libtests_a_SOURCES += snprintf.c
+
+## end   gnulib module snprintf
+
+## begin gnulib module snprintf-tests
+
+TESTS += test-snprintf
+check_PROGRAMS += test-snprintf
+
+EXTRA_DIST += test-snprintf.c signature.h macros.h
+
+## end   gnulib module snprintf-tests
+
+## begin gnulib module socket
+
+
+EXTRA_DIST += socket.c w32sock.h
+
+EXTRA_libtests_a_SOURCES += socket.c
+
+## end   gnulib module socket
+
+## begin gnulib module sockets
+
+libtests_a_SOURCES += sockets.h sockets.c
+
+EXTRA_DIST += w32sock.h
+
+## end   gnulib module sockets
+
+## begin gnulib module sockets-tests
+
+TESTS += test-sockets
+check_PROGRAMS += test-sockets
+test_sockets_LDADD = $(LDADD) @LIBSOCKET@
+EXTRA_DIST += test-sockets.c
+
+## end   gnulib module sockets-tests
+
+## begin gnulib module stat-tests
+
+TESTS += test-stat
+check_PROGRAMS += test-stat
+test_stat_LDADD = $(LDADD) $(LIBINTL)
+EXTRA_DIST += test-stat.h test-stat.c signature.h macros.h
+
+## end   gnulib module stat-tests
+
+## begin gnulib module stat-time-tests
+
+TESTS += test-stat-time
+check_PROGRAMS += test-stat-time
+test_stat_time_LDADD = $(LDADD) $(LIB_NANOSLEEP)
+EXTRA_DIST += test-stat-time.c macros.h nap.h
+
+## end   gnulib module stat-time-tests
+
+## begin gnulib module stdalign-tests
+
+TESTS += test-stdalign
+check_PROGRAMS += test-stdalign
+EXTRA_DIST += test-stdalign.c macros.h
+
+## end   gnulib module stdalign-tests
+
+## begin gnulib module stdbool-tests
+
+TESTS += test-stdbool
+check_PROGRAMS += test-stdbool
+EXTRA_DIST += test-stdbool.c
+
+## end   gnulib module stdbool-tests
+
+## begin gnulib module stddef-tests
+
+TESTS += test-stddef
+check_PROGRAMS += test-stddef
+EXTRA_DIST += test-stddef.c
+
+## end   gnulib module stddef-tests
+
+## begin gnulib module stdint-tests
+
+TESTS += test-stdint
+check_PROGRAMS += test-stdint
+EXTRA_DIST += test-stdint.c
+
+## end   gnulib module stdint-tests
+
+## begin gnulib module stdio-tests
+
+TESTS += test-stdio
+check_PROGRAMS += test-stdio
+EXTRA_DIST += test-stdio.c
+
+## end   gnulib module stdio-tests
+
+## begin gnulib module stdlib-tests
+
+TESTS += test-stdlib
+check_PROGRAMS += test-stdlib
+EXTRA_DIST += test-stdlib.c test-sys_wait.h
+
+## end   gnulib module stdlib-tests
+
+## begin gnulib module strerror-tests
+
+TESTS += test-strerror
+check_PROGRAMS += test-strerror
+EXTRA_DIST += test-strerror.c signature.h macros.h
+
+## end   gnulib module strerror-tests
+
+## begin gnulib module strerror_r-posix
+
+
+EXTRA_DIST += strerror_r.c
+
+EXTRA_libtests_a_SOURCES += strerror_r.c
+
+## end   gnulib module strerror_r-posix
+
+## begin gnulib module strerror_r-posix-tests
+
+TESTS += test-strerror_r
+check_PROGRAMS += test-strerror_r
+EXTRA_DIST += test-strerror_r.c signature.h macros.h
+
+## end   gnulib module strerror_r-posix-tests
+
+## begin gnulib module striconv-tests
+
+TESTS += test-striconv
+check_PROGRAMS += test-striconv
+test_striconv_LDADD = $(LDADD) @LIBICONV@
+
+EXTRA_DIST += test-striconv.c macros.h
+
+## end   gnulib module striconv-tests
+
+## begin gnulib module string-tests
+
+TESTS += test-string
+check_PROGRAMS += test-string
+EXTRA_DIST += test-string.c
+
+## end   gnulib module string-tests
+
+## begin gnulib module strnlen-tests
+
+TESTS += test-strnlen
+check_PROGRAMS += test-strnlen
+EXTRA_DIST += test-strnlen.c zerosize-ptr.h signature.h macros.h
+
+## end   gnulib module strnlen-tests
+
+## begin gnulib module strstr-tests
+
+TESTS += test-strstr
+check_PROGRAMS += test-strstr
+EXTRA_DIST += test-strstr.c zerosize-ptr.h signature.h macros.h
+
+## end   gnulib module strstr-tests
+
+## begin gnulib module strtoimax-tests
+
+TESTS += test-strtoimax
+check_PROGRAMS += test-strtoimax
+EXTRA_DIST += test-strtoimax.c signature.h macros.h
+
+## end   gnulib module strtoimax-tests
+
+## begin gnulib module strtoll-tests
+
+TESTS += test-strtoll
+check_PROGRAMS += test-strtoll
+EXTRA_DIST += test-strtoll.c signature.h macros.h
+
+## end   gnulib module strtoll-tests
+
+## begin gnulib module strtoull-tests
+
+TESTS += test-strtoull
+check_PROGRAMS += test-strtoull
+EXTRA_DIST += test-strtoull.c signature.h macros.h
+
+## end   gnulib module strtoull-tests
+
+## begin gnulib module strtoumax-tests
+
+TESTS += test-strtoumax
+check_PROGRAMS += test-strtoumax
+EXTRA_DIST += test-strtoumax.c signature.h macros.h
+
+## end   gnulib module strtoumax-tests
+
+## begin gnulib module symlink
+
+
+EXTRA_DIST += symlink.c
+
+EXTRA_libtests_a_SOURCES += symlink.c
+
+## end   gnulib module symlink
+
+## begin gnulib module symlink-tests
+
+TESTS += test-symlink
+check_PROGRAMS += test-symlink
+EXTRA_DIST += test-symlink.h test-symlink.c signature.h macros.h
+
+## end   gnulib module symlink-tests
+
+## begin gnulib module sys_ioctl
+
+BUILT_SOURCES += sys/ioctl.h
+
+# We need the following in order to create <sys/ioctl.h> when the system
+# does not have a complete one.
+sys/ioctl.h: sys_ioctl.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_SYS_IOCTL_H''@|$(HAVE_SYS_IOCTL_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_IOCTL_H''@|$(NEXT_SYS_IOCTL_H)|g' \
+	      -e 's/@''GNULIB_IOCTL''@/$(GL_GNULIB_IOCTL)/g' \
+	      -e 's|@''SYS_IOCTL_H_HAVE_WINSOCK2_H''@|$(SYS_IOCTL_H_HAVE_WINSOCK2_H)|g' \
+	      -e 's|@''SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS''@|$(SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS)|g' \
+	      -e 's|@''REPLACE_IOCTL''@|$(REPLACE_IOCTL)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/sys_ioctl.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += sys/ioctl.h sys/ioctl.h-t
+MOSTLYCLEANDIRS += sys
+
+EXTRA_DIST += sys_ioctl.in.h
+
+## end   gnulib module sys_ioctl
+
+## begin gnulib module sys_ioctl-tests
+
+TESTS += test-sys_ioctl
+check_PROGRAMS += test-sys_ioctl
+EXTRA_DIST += test-sys_ioctl.c
+
+## end   gnulib module sys_ioctl-tests
+
+## begin gnulib module sys_select
+
+BUILT_SOURCES += sys/select.h
+
+# We need the following in order to create <sys/select.h> when the system
+# doesn't have one that works with the given compiler.
+sys/select.h: sys_select.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_SELECT_H''@|$(NEXT_SYS_SELECT_H)|g' \
+	      -e 's|@''HAVE_SYS_SELECT_H''@|$(HAVE_SYS_SELECT_H)|g' \
+	      -e 's/@''GNULIB_PSELECT''@/$(GL_GNULIB_PSELECT)/g' \
+	      -e 's/@''GNULIB_SELECT''@/$(GL_GNULIB_SELECT)/g' \
+	      -e 's|@''HAVE_WINSOCK2_H''@|$(HAVE_WINSOCK2_H)|g' \
+	      -e 's|@''HAVE_PSELECT''@|$(HAVE_PSELECT)|g' \
+	      -e 's|@''REPLACE_PSELECT''@|$(REPLACE_PSELECT)|g' \
+	      -e 's|@''REPLACE_SELECT''@|$(REPLACE_SELECT)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/sys_select.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += sys/select.h sys/select.h-t
+MOSTLYCLEANDIRS += sys
+
+EXTRA_DIST += sys_select.in.h
+
+## end   gnulib module sys_select
+
+## begin gnulib module sys_select-tests
+
+TESTS += test-sys_select
+check_PROGRAMS += test-sys_select
+EXTRA_DIST += test-sys_select.c signature.h
+
+## end   gnulib module sys_select-tests
+
+## begin gnulib module sys_socket
+
+BUILT_SOURCES += sys/socket.h
+libtests_a_SOURCES += sys_socket.c
+
+# We need the following in order to create <sys/socket.h> when the system
+# doesn't have one that works with the given compiler.
+sys/socket.h: sys_socket.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H) $(ARG_NONNULL_H)
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_SOCKET_H''@|$(NEXT_SYS_SOCKET_H)|g' \
+	      -e 's|@''HAVE_SYS_SOCKET_H''@|$(HAVE_SYS_SOCKET_H)|g' \
+	      -e 's/@''GNULIB_CLOSE''@/$(GL_GNULIB_CLOSE)/g' \
+	      -e 's/@''GNULIB_SOCKET''@/$(GL_GNULIB_SOCKET)/g' \
+	      -e 's/@''GNULIB_CONNECT''@/$(GL_GNULIB_CONNECT)/g' \
+	      -e 's/@''GNULIB_ACCEPT''@/$(GL_GNULIB_ACCEPT)/g' \
+	      -e 's/@''GNULIB_BIND''@/$(GL_GNULIB_BIND)/g' \
+	      -e 's/@''GNULIB_GETPEERNAME''@/$(GL_GNULIB_GETPEERNAME)/g' \
+	      -e 's/@''GNULIB_GETSOCKNAME''@/$(GL_GNULIB_GETSOCKNAME)/g' \
+	      -e 's/@''GNULIB_GETSOCKOPT''@/$(GL_GNULIB_GETSOCKOPT)/g' \
+	      -e 's/@''GNULIB_LISTEN''@/$(GL_GNULIB_LISTEN)/g' \
+	      -e 's/@''GNULIB_RECV''@/$(GL_GNULIB_RECV)/g' \
+	      -e 's/@''GNULIB_SEND''@/$(GL_GNULIB_SEND)/g' \
+	      -e 's/@''GNULIB_RECVFROM''@/$(GL_GNULIB_RECVFROM)/g' \
+	      -e 's/@''GNULIB_SENDTO''@/$(GL_GNULIB_SENDTO)/g' \
+	      -e 's/@''GNULIB_SETSOCKOPT''@/$(GL_GNULIB_SETSOCKOPT)/g' \
+	      -e 's/@''GNULIB_SHUTDOWN''@/$(GL_GNULIB_SHUTDOWN)/g' \
+	      -e 's/@''GNULIB_ACCEPT4''@/$(GL_GNULIB_ACCEPT4)/g' \
+	      -e 's|@''HAVE_WINSOCK2_H''@|$(HAVE_WINSOCK2_H)|g' \
+	      -e 's|@''HAVE_WS2TCPIP_H''@|$(HAVE_WS2TCPIP_H)|g' \
+	      -e 's|@''HAVE_STRUCT_SOCKADDR_STORAGE''@|$(HAVE_STRUCT_SOCKADDR_STORAGE)|g' \
+	      -e 's|@''HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY''@|$(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY)|g' \
+	      -e 's|@''HAVE_SA_FAMILY_T''@|$(HAVE_SA_FAMILY_T)|g' \
+	      -e 's|@''HAVE_ACCEPT4''@|$(HAVE_ACCEPT4)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/sys_socket.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+MOSTLYCLEANFILES += sys/socket.h sys/socket.h-t
+MOSTLYCLEANDIRS += sys
+
+EXTRA_DIST += sys_socket.in.h
+
+## end   gnulib module sys_socket
+
+## begin gnulib module sys_socket-tests
+
+TESTS += test-sys_socket
+check_PROGRAMS += test-sys_socket
+EXTRA_DIST += test-sys_socket.c
+
+## end   gnulib module sys_socket-tests
+
+## begin gnulib module sys_stat-tests
+
+TESTS += test-sys_stat
+check_PROGRAMS += test-sys_stat
+EXTRA_DIST += test-sys_stat.c
+
+## end   gnulib module sys_stat-tests
+
+## begin gnulib module sys_time
+
+BUILT_SOURCES += sys/time.h
+
+# We need the following in order to create <sys/time.h> when the system
+# doesn't have one that works with the given compiler.
+sys/time.h: sys_time.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's/@''HAVE_SYS_TIME_H''@/$(HAVE_SYS_TIME_H)/g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_TIME_H''@|$(NEXT_SYS_TIME_H)|g' \
+	      -e 's/@''GNULIB_GETTIMEOFDAY''@/$(GL_GNULIB_GETTIMEOFDAY)/g' \
+	      -e 's|@''HAVE_WINSOCK2_H''@|$(HAVE_WINSOCK2_H)|g' \
+	      -e 's/@''HAVE_GETTIMEOFDAY''@/$(HAVE_GETTIMEOFDAY)/g' \
+	      -e 's/@''HAVE_STRUCT_TIMEVAL''@/$(HAVE_STRUCT_TIMEVAL)/g' \
+	      -e 's/@''REPLACE_GETTIMEOFDAY''@/$(REPLACE_GETTIMEOFDAY)/g' \
+	      -e 's/@''REPLACE_STRUCT_TIMEVAL''@/$(REPLACE_STRUCT_TIMEVAL)/g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/sys_time.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += sys/time.h sys/time.h-t
+
+EXTRA_DIST += sys_time.in.h
+
+## end   gnulib module sys_time
+
+## begin gnulib module sys_time-tests
+
+TESTS += test-sys_time
+check_PROGRAMS += test-sys_time
+EXTRA_DIST += test-sys_time.c
+
+## end   gnulib module sys_time-tests
+
+## begin gnulib module sys_types-tests
+
+TESTS += test-sys_types
+check_PROGRAMS += test-sys_types
+EXTRA_DIST += test-sys_types.c
+
+## end   gnulib module sys_types-tests
+
+## begin gnulib module sys_uio
+
+BUILT_SOURCES += sys/uio.h
+
+# We need the following in order to create <sys/uio.h> when the system
+# doesn't have one that works with the given compiler.
+sys/uio.h: sys_uio.in.h $(top_builddir)/config.status
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_UIO_H''@|$(NEXT_SYS_UIO_H)|g' \
+	      -e 's|@''HAVE_SYS_UIO_H''@|$(HAVE_SYS_UIO_H)|g' \
+	      < $(srcdir)/sys_uio.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+MOSTLYCLEANFILES += sys/uio.h sys/uio.h-t
+MOSTLYCLEANDIRS += sys
+
+EXTRA_DIST += sys_uio.in.h
+
+## end   gnulib module sys_uio
+
+## begin gnulib module sys_uio-tests
+
+TESTS += test-sys_uio
+check_PROGRAMS += test-sys_uio
+EXTRA_DIST += test-sys_uio.c
+
+## end   gnulib module sys_uio-tests
+
+## begin gnulib module test-framework-sh-tests
+
+TESTS += test-init.sh
+EXTRA_DIST += init.sh
+EXTRA_DIST += test-init.sh
+
+## end   gnulib module test-framework-sh-tests
+
+## begin gnulib module thread
+
+libtests_a_SOURCES += glthread/thread.h glthread/thread.c
+
+## end   gnulib module thread
+
+## begin gnulib module thread-optim
+
+
+EXTRA_DIST += thread-optim.h
+
+## end   gnulib module thread-optim
+
+## begin gnulib module thread-tests
+
+TESTS += test-thread_self test-thread_create
+check_PROGRAMS += test-thread_self test-thread_create
+test_thread_self_LDADD = $(LDADD) @LIBTHREAD@
+test_thread_create_LDADD = $(LDADD) @LIBMULTITHREAD@
+EXTRA_DIST += test-thread_self.c test-thread_create.c macros.h
+
+## end   gnulib module thread-tests
+
+## begin gnulib module time-tests
+
+TESTS += test-time
+check_PROGRAMS += test-time
+EXTRA_DIST += test-time.c
+
+## end   gnulib module time-tests
+
+## begin gnulib module unistd-safer-tests
+
+TESTS += test-dup-safer
+check_PROGRAMS += test-dup-safer
+EXTRA_DIST += test-dup-safer.c macros.h
+
+## end   gnulib module unistd-safer-tests
+
+## begin gnulib module unistd-tests
+
+TESTS += test-unistd
+check_PROGRAMS += test-unistd
+EXTRA_DIST += test-unistd.c
+
+## end   gnulib module unistd-tests
+
+## begin gnulib module unistr/u8-mbtoucr-tests
+
+TESTS += test-u8-mbtoucr
+check_PROGRAMS += test-u8-mbtoucr
+test_u8_mbtoucr_SOURCES = unistr/test-u8-mbtoucr.c
+test_u8_mbtoucr_LDADD = $(LDADD) $(LIBUNISTRING)
+EXTRA_DIST += unistr/test-u8-mbtoucr.c macros.h
+
+## end   gnulib module unistr/u8-mbtoucr-tests
+
+## begin gnulib module unistr/u8-uctomb-tests
+
+TESTS += test-u8-uctomb
+check_PROGRAMS += test-u8-uctomb
+test_u8_uctomb_SOURCES = unistr/test-u8-uctomb.c
+test_u8_uctomb_LDADD = $(LDADD) $(LIBUNISTRING)
+EXTRA_DIST += unistr/test-u8-uctomb.c macros.h
+
+## end   gnulib module unistr/u8-uctomb-tests
+
+## begin gnulib module uniwidth/width-tests
+
+TESTS += test-uc_width uniwidth/test-uc_width2.sh
+check_PROGRAMS += test-uc_width test-uc_width2
+test_uc_width_SOURCES = uniwidth/test-uc_width.c
+test_uc_width_LDADD = $(LDADD) $(LIBUNISTRING)
+test_uc_width2_SOURCES = uniwidth/test-uc_width2.c
+test_uc_width2_LDADD = $(LDADD) $(LIBUNISTRING)
+EXTRA_DIST += uniwidth/test-uc_width.c uniwidth/test-uc_width2.c uniwidth/test-uc_width2.sh macros.h
+
+## end   gnulib module uniwidth/width-tests
+
+## begin gnulib module unsetenv
+
+
+EXTRA_DIST += unsetenv.c
+
+EXTRA_libtests_a_SOURCES += unsetenv.c
+
+## end   gnulib module unsetenv
+
+## begin gnulib module unsetenv-tests
+
+TESTS += test-unsetenv
+check_PROGRAMS += test-unsetenv
+EXTRA_DIST += test-unsetenv.c signature.h macros.h
+
+## end   gnulib module unsetenv-tests
+
+## begin gnulib module vasnprintf
+
+
+EXTRA_DIST += asnprintf.c float+.h printf-args.c printf-args.h printf-parse.c printf-parse.h vasnprintf.c vasnprintf.h
+
+EXTRA_libtests_a_SOURCES += asnprintf.c printf-args.c printf-parse.c vasnprintf.c
+
+## end   gnulib module vasnprintf
+
+## begin gnulib module vasnprintf-tests
+
+TESTS += test-vasnprintf
+check_PROGRAMS += test-vasnprintf
+
+EXTRA_DIST += test-vasnprintf.c macros.h
+
+## end   gnulib module vasnprintf-tests
+
+## begin gnulib module vc-list-files-tests
+
+TESTS += test-vc-list-files-git.sh
+TESTS += test-vc-list-files-cvs.sh
+TESTS_ENVIRONMENT += abs_aux_dir='$(abs_aux_dir)'
+EXTRA_DIST += test-vc-list-files-git.sh test-vc-list-files-cvs.sh
+
+## end   gnulib module vc-list-files-tests
+
+## begin gnulib module verify-tests
+
+TESTS_ENVIRONMENT += MAKE='$(MAKE)'
+TESTS += test-verify test-verify.sh
+check_PROGRAMS += test-verify
+# test-verify-try is never built, but test-verify.sh needs a rule to
+# build test-verify-try.o.
+EXTRA_PROGRAMS += test-verify-try
+
+# This test expects compilation of test-verify-try.c to fail, and
+# each time it fails, the makefile rule does not perform the usual
+#  "mv -f $name.Tpo $name.po, so tell make clean to remove that file.
+MOSTLYCLEANFILES += .deps/test-verify-try.Tpo
+EXTRA_DIST += test-verify.c test-verify-try.c test-verify.sh
+
+## end   gnulib module verify-tests
+
+## begin gnulib module version-etc-tests
+
+TESTS += test-version-etc.sh
+check_PROGRAMS += test-version-etc
+test_version_etc_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-version-etc.c test-version-etc.sh
+
+## end   gnulib module version-etc-tests
+
+## begin gnulib module wchar-tests
+
+TESTS += test-wchar
+check_PROGRAMS += test-wchar
+EXTRA_DIST += test-wchar.c
+
+## end   gnulib module wchar-tests
+
+## begin gnulib module wcrtomb-tests
+
+TESTS += \
+  test-wcrtomb.sh \
+  test-wcrtomb-w32-1.sh test-wcrtomb-w32-2.sh test-wcrtomb-w32-3.sh \
+  test-wcrtomb-w32-4.sh test-wcrtomb-w32-5.sh test-wcrtomb-w32-6.sh \
+  test-wcrtomb-w32-7.sh
+TESTS_ENVIRONMENT += \
+  LOCALE_FR='@LOCALE_FR@' \
+  LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' \
+  LOCALE_JA='@LOCALE_JA@' \
+  LOCALE_ZH_CN='@LOCALE_ZH_CN@'
+check_PROGRAMS += test-wcrtomb test-wcrtomb-w32
+test_wcrtomb_LDADD = $(LDADD) $(LIB_SETLOCALE)
+EXTRA_DIST += test-wcrtomb.sh test-wcrtomb.c test-wcrtomb-w32-1.sh test-wcrtomb-w32-2.sh test-wcrtomb-w32-3.sh test-wcrtomb-w32-4.sh test-wcrtomb-w32-5.sh test-wcrtomb-w32-6.sh test-wcrtomb-w32-7.sh test-wcrtomb-w32.c signature.h macros.h
+
+## end   gnulib module wcrtomb-tests
+
+## begin gnulib module wctype-h-tests
+
+TESTS += test-wctype-h
+check_PROGRAMS += test-wctype-h
+EXTRA_DIST += test-wctype-h.c macros.h
+
+## end   gnulib module wctype-h-tests
+
+## begin gnulib module wcwidth-tests
+
+TESTS += test-wcwidth
+check_PROGRAMS += test-wcwidth
+test_wcwidth_LDADD = $(LDADD) $(LIB_SETLOCALE) $(LIBUNISTRING)
+EXTRA_DIST += test-wcwidth.c signature.h macros.h
+
+## end   gnulib module wcwidth-tests
+
+## begin gnulib module windows-thread
+
+
+EXTRA_DIST += windows-thread.c windows-thread.h
+
+EXTRA_libtests_a_SOURCES += windows-thread.c
+
+## end   gnulib module windows-thread
+
+## begin gnulib module windows-tls
+
+
+EXTRA_DIST += windows-tls.c windows-tls.h
+
+EXTRA_libtests_a_SOURCES += windows-tls.c
+
+## end   gnulib module windows-tls
+
+## begin gnulib module xalloc-die-tests
+
+TESTS += test-xalloc-die.sh
+check_PROGRAMS += test-xalloc-die
+test_xalloc_die_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-xalloc-die.c test-xalloc-die.sh
+
+## end   gnulib module xalloc-die-tests
+
+## begin gnulib module xsize
+
+libtests_a_SOURCES += xsize.h xsize.c
+
+## end   gnulib module xsize
+
+## begin gnulib module xstrtoimax-tests
+
+TESTS += test-xstrtoimax.sh
+check_PROGRAMS += test-xstrtoimax
+test_xstrtoimax_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-xstrtoimax.c test-xstrtoimax.sh
+
+## end   gnulib module xstrtoimax-tests
+
+## begin gnulib module xstrtol-error
+
+libtests_a_SOURCES += xstrtol-error.c
+
+EXTRA_DIST += xstrtol-error.h
+
+## end   gnulib module xstrtol-error
+
+## begin gnulib module xstrtol-tests
+
+TESTS += test-xstrtol.sh
+check_PROGRAMS += test-xstrtol test-xstrtoul
+test_xstrtol_LDADD = $(LDADD) @LIBINTL@
+test_xstrtoul_LDADD = $(LDADD) @LIBINTL@
+EXTRA_DIST += test-xstrtol.c test-xstrtoul.c test-xstrtol.sh
+
+## end   gnulib module xstrtol-tests
+
+all: all-notice
+all-notice:
+	@echo '## ---------------------------------------------------- ##'
+	@echo '## ------------------- Gnulib tests ------------------- ##'
+	@echo '## You can ignore compiler warnings in this directory.  ##'
+	@echo '## ---------------------------------------------------- ##'
+
+check-am: check-notice
+check-notice:
+	@echo '## ---------------------------------------------------------------------- ##'
+	@echo '## ---------------------------- Gnulib tests ---------------------------- ##'
+	@echo '## Please report test failures in this directory to <bug-gnulib@gnu.org>. ##'
+	@echo '## ---------------------------------------------------------------------- ##'
+
+# Clean up after Solaris cc.
+clean-local:
+	rm -rf SunWS_cache
+
+mostlyclean-local: mostlyclean-generic
+	@for dir in '' $(MOSTLYCLEANDIRS); do \
+	  if test -n "$$dir" && test -d $$dir; then \
+	    echo "rmdir $$dir"; rmdir $$dir; \
+	  fi; \
+	done; \
+	:
diff --git a/src/grep/gnulib-tests/hash-pjw.c b/src/grep/gnulib-tests/hash-pjw.c
new file mode 100644
index 0000000..19e7762
--- /dev/null
+++ b/src/grep/gnulib-tests/hash-pjw.c
@@ -0,0 +1,40 @@
+/* hash-pjw.c -- compute a hash value from a NUL-terminated string.
+
+   Copyright (C) 2001, 2003, 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "hash-pjw.h"
+
+#include <limits.h>
+
+#define SIZE_BITS (sizeof (size_t) * CHAR_BIT)
+
+/* A hash function for NUL-terminated char* strings using
+   the method described by Bruno Haible.
+   See https://www.haible.de/bruno/hashfunc.html.  */
+
+size_t
+hash_pjw (const void *x, size_t tablesize)
+{
+  const char *s;
+  size_t h = 0;
+
+  for (s = x; *s; s++)
+    h = *s + ((h << 9) | (h >> (SIZE_BITS - 9)));
+
+  return h % tablesize;
+}
diff --git a/src/grep/gnulib-tests/hash-pjw.h b/src/grep/gnulib-tests/hash-pjw.h
new file mode 100644
index 0000000..cb18cf3
--- /dev/null
+++ b/src/grep/gnulib-tests/hash-pjw.h
@@ -0,0 +1,23 @@
+/* hash-pjw.h -- declaration for a simple hash function
+   Copyright (C) 2001, 2003, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <stddef.h>
+
+/* Compute a hash code for a NUL-terminated string starting at X,
+   and return the hash code modulo TABLESIZE.
+   The result is platform dependent: it depends on the size of the 'size_t'
+   type and on the signedness of the 'char' type.  */
+extern size_t hash_pjw (void const *x, size_t tablesize) _GL_ATTRIBUTE_PURE;
diff --git a/src/grep/gnulib-tests/imaxtostr.c b/src/grep/gnulib-tests/imaxtostr.c
new file mode 100644
index 0000000..6a9c6a9
--- /dev/null
+++ b/src/grep/gnulib-tests/imaxtostr.c
@@ -0,0 +1,20 @@
+/* Convert 'intmax_t' integer to printable string.
+
+   Copyright (C) 2004-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define anytostr imaxtostr
+#define inttype intmax_t
+#include "anytostr.c"
diff --git a/src/grep/gnulib-tests/inet_pton.c b/src/grep/gnulib-tests/inet_pton.c
new file mode 100644
index 0000000..14e8b0a
--- /dev/null
+++ b/src/grep/gnulib-tests/inet_pton.c
@@ -0,0 +1,268 @@
+/* inet_pton.c -- convert IPv4 and IPv6 addresses from text to binary form
+
+   Copyright (C) 2006, 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/*
+ * Copyright (c) 1996,1999 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#include <config.h>
+
+/* Specification.  */
+#include <arpa/inet.h>
+
+#if HAVE_DECL_INET_PTON
+
+# undef inet_pton
+
+int
+rpl_inet_pton (int af, const char *restrict src, void *restrict dst)
+{
+  return inet_pton (af, src, dst);
+}
+
+#else
+
+# include <c-ctype.h>
+# include <string.h>
+# include <errno.h>
+
+# define NS_INADDRSZ 4
+# define NS_IN6ADDRSZ 16
+# define NS_INT16SZ 2
+
+/*
+ * WARNING: Don't even consider trying to compile this on a system where
+ * sizeof(int) < 4.  sizeof(int) > 4 is fine; all the world's not a VAX.
+ */
+
+static int inet_pton4 (const char *src, unsigned char *dst);
+# if HAVE_IPV6
+static int inet_pton6 (const char *src, unsigned char *dst);
+# endif
+
+/* int
+ * inet_pton(af, src, dst)
+ *      convert from presentation format (which usually means ASCII printable)
+ *      to network format (which is usually some kind of binary format).
+ * return:
+ *      1 if the address was valid for the specified address family
+ *      0 if the address wasn't valid ('dst' is untouched in this case)
+ *      -1 if some other error occurred ('dst' is untouched in this case, too)
+ * author:
+ *      Paul Vixie, 1996.
+ */
+int
+inet_pton (int af, const char *restrict src, void *restrict dst)
+{
+  switch (af)
+    {
+    case AF_INET:
+      return (inet_pton4 (src, dst));
+
+# if HAVE_IPV6
+    case AF_INET6:
+      return (inet_pton6 (src, dst));
+# endif
+
+    default:
+      errno = EAFNOSUPPORT;
+      return (-1);
+    }
+  /* NOTREACHED */
+}
+
+/* int
+ * inet_pton4(src, dst)
+ *      like inet_aton() but without all the hexadecimal, octal (with the
+ *      exception of 0) and shorthand.
+ * return:
+ *      1 if 'src' is a valid dotted quad, else 0.
+ * notice:
+ *      does not touch 'dst' unless it's returning 1.
+ * author:
+ *      Paul Vixie, 1996.
+ */
+static int
+inet_pton4 (const char *restrict src, unsigned char *restrict dst)
+{
+  int saw_digit, octets, ch;
+  unsigned char tmp[NS_INADDRSZ], *tp;
+
+  saw_digit = 0;
+  octets = 0;
+  *(tp = tmp) = 0;
+  while ((ch = *src++) != '\0')
+    {
+
+      if (ch >= '0' && ch <= '9')
+        {
+          unsigned new = *tp * 10 + (ch - '0');
+
+          if (saw_digit && *tp == 0)
+            return (0);
+          if (new > 255)
+            return (0);
+          *tp = new;
+          if (!saw_digit)
+            {
+              if (++octets > 4)
+                return (0);
+              saw_digit = 1;
+            }
+        }
+      else if (ch == '.' && saw_digit)
+        {
+          if (octets == 4)
+            return (0);
+          *++tp = 0;
+          saw_digit = 0;
+        }
+      else
+        return (0);
+    }
+  if (octets < 4)
+    return (0);
+  memcpy (dst, tmp, NS_INADDRSZ);
+  return (1);
+}
+
+# if HAVE_IPV6
+
+/* int
+ * inet_pton6(src, dst)
+ *      convert presentation level address to network order binary form.
+ * return:
+ *      1 if 'src' is a valid [RFC1884 2.2] address, else 0.
+ * notice:
+ *      (1) does not touch 'dst' unless it's returning 1.
+ *      (2) :: in a full address is silently ignored.
+ * credit:
+ *      inspired by Mark Andrews.
+ * author:
+ *      Paul Vixie, 1996.
+ */
+static int
+inet_pton6 (const char *restrict src, unsigned char *restrict dst)
+{
+  static const char xdigits[] = "0123456789abcdef";
+  unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
+  const char *curtok;
+  int ch, saw_xdigit;
+  unsigned val;
+
+  tp = memset (tmp, '\0', NS_IN6ADDRSZ);
+  endp = tp + NS_IN6ADDRSZ;
+  colonp = NULL;
+  /* Leading :: requires some special handling. */
+  if (*src == ':')
+    if (*++src != ':')
+      return (0);
+  curtok = src;
+  saw_xdigit = 0;
+  val = 0;
+  while ((ch = c_tolower (*src++)) != '\0')
+    {
+      const char *pch;
+
+      pch = strchr (xdigits, ch);
+      if (pch != NULL)
+        {
+          val <<= 4;
+          val |= (pch - xdigits);
+          if (val > 0xffff)
+            return (0);
+          saw_xdigit = 1;
+          continue;
+        }
+      if (ch == ':')
+        {
+          curtok = src;
+          if (!saw_xdigit)
+            {
+              if (colonp)
+                return (0);
+              colonp = tp;
+              continue;
+            }
+          else if (*src == '\0')
+            {
+              return (0);
+            }
+          if (tp + NS_INT16SZ > endp)
+            return (0);
+          *tp++ = (u_char) (val >> 8) & 0xff;
+          *tp++ = (u_char) val & 0xff;
+          saw_xdigit = 0;
+          val = 0;
+          continue;
+        }
+      if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
+          inet_pton4 (curtok, tp) > 0)
+        {
+          tp += NS_INADDRSZ;
+          saw_xdigit = 0;
+          break;                /* '\0' was seen by inet_pton4(). */
+        }
+      return (0);
+    }
+  if (saw_xdigit)
+    {
+      if (tp + NS_INT16SZ > endp)
+        return (0);
+      *tp++ = (u_char) (val >> 8) & 0xff;
+      *tp++ = (u_char) val & 0xff;
+    }
+  if (colonp != NULL)
+    {
+      /*
+       * Since some memmove()'s erroneously fail to handle
+       * overlapping regions, we'll do the shift by hand.
+       */
+      const int n = tp - colonp;
+      int i;
+
+      if (tp == endp)
+        return (0);
+      for (i = 1; i <= n; i++)
+        {
+          endp[-i] = colonp[n - i];
+          colonp[n - i] = 0;
+        }
+      tp = endp;
+    }
+  if (tp != endp)
+    return (0);
+  memcpy (dst, tmp, NS_IN6ADDRSZ);
+  return (1);
+}
+
+# endif
+
+#endif
diff --git a/src/grep/gnulib-tests/init.sh b/src/grep/gnulib-tests/init.sh
new file mode 100644
index 0000000..9ef8348
--- /dev/null
+++ b/src/grep/gnulib-tests/init.sh
@@ -0,0 +1,683 @@
+# source this file; set up for tests
+
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Using this file in a test
+# =========================
+#
+# The typical skeleton of a test looks like this:
+#
+#   #!/bin/sh
+#   . "${srcdir=.}/init.sh"; path_prepend_ .
+#   Execute some commands.
+#   Note that these commands are executed in a subdirectory, therefore you
+#   need to prepend "../" to relative filenames in the build directory.
+#   Note that the "path_prepend_ ." is useful only if the body of your
+#   test invokes programs residing in the initial directory.
+#   For example, if the programs you want to test are in src/, and this test
+#   script is named tests/test-1, then you would use "path_prepend_ ../src",
+#   or perhaps export PATH='$(abs_top_builddir)/src$(PATH_SEPARATOR)'"$$PATH"
+#   to all tests via automake's TESTS_ENVIRONMENT.
+#   Set the exit code 0 for success, 77 for skipped, or 1 or other for failure.
+#   Use the skip_ and fail_ functions to print a diagnostic and then exit
+#   with the corresponding exit code.
+#   Exit $?
+
+# Executing a test that uses this file
+# ====================================
+#
+# Running a single test:
+#   $ make check TESTS=test-foo.sh
+#
+# Running a single test, with verbose output:
+#   $ make check TESTS=test-foo.sh VERBOSE=yes
+#
+# Running a single test, keeping the temporary directory:
+#   $ make check TESTS=test-foo.sh KEEP=yes
+#
+# Running a single test, with single-stepping:
+#   1. Go into a sub-shell:
+#   $ bash
+#   2. Set relevant environment variables from TESTS_ENVIRONMENT in the
+#      Makefile:
+#   $ export srcdir=../../tests # this is an example
+#   3. Execute the commands from the test, copy&pasting them one by one:
+#   $ . "$srcdir/init.sh"; path_prepend_ .
+#   ...
+#   4. Finally
+#   $ exit
+
+# =============================================================================
+# Elementary diagnostics
+
+ME_=`expr "./$0" : '.*/\(.*\)$'`
+
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
+  # contains only /bin. Note that ksh looks also at the FPATH variable,
+  # so we have to set that as well for the test.
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+           || PATH_SEPARATOR=';'
+       }
+fi
+
+# We use a trap below for cleanup.  This requires us to go through
+# hoops to get the right exit status transported through the handler.
+# So use 'Exit STATUS' instead of 'exit STATUS' inside of the tests.
+# Turn off errexit here so that we don't trip the bug with OSF1/Tru64
+# sh inside this function.
+Exit () { set +e; (exit $1); exit $1; }
+
+# Print warnings (e.g., about skipped and failed tests) to this file number.
+# Override by defining to say, 9, in init.cfg, and putting say,
+#   export ...ENVVAR_SETTINGS...; $(SHELL) 9>&2
+# in the definition of TESTS_ENVIRONMENT in your tests/Makefile.am file.
+# This is useful when using automake's parallel tests mode, to print
+# the reason for skip/failure to console, rather than to the .log files.
+: ${stderr_fileno_=2}
+
+# Note that correct expansion of "$*" depends on IFS starting with ' '.
+# Always write the full diagnostic to stderr.
+# When stderr_fileno_ is not 2, also emit the first line of the
+# diagnostic to that file descriptor.
+warn_ ()
+{
+  # If IFS does not start with ' ', set it and emit the warning in a subshell.
+  case $IFS in
+    ' '*) printf '%s\n' "$*" >&2
+          test $stderr_fileno_ = 2 \
+            || { printf '%s\n' "$*" | sed 1q >&$stderr_fileno_ ; } ;;
+    *) (IFS=' '; warn_ "$@");;
+  esac
+}
+fail_ () { warn_ "$ME_: failed test: $@"; Exit 1; }
+skip_ () { warn_ "$ME_: skipped test: $@"; Exit 77; }
+fatal_ () { warn_ "$ME_: hard error: $@"; Exit 99; }
+framework_failure_ () { warn_ "$ME_: set-up failure: $@"; Exit 99; }
+
+# =============================================================================
+# Ensure the shell supports modern syntax.
+
+# Sanitize this shell to POSIX mode, if possible.
+DUALCASE=1; export DUALCASE
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in
+    *posix*) set -o posix ;;
+  esac
+fi
+
+# We require $(...) support unconditionally.
+# We require that the printf built-in work correctly regarding octal escapes;
+# this eliminates /bin/sh on AIX 7.2.
+# We require non-surprising "local" semantics (this eliminates dash).
+# This takes the admittedly draconian step of eliminating dash, because the
+# assignment tab=$(printf '\t') works fine, yet preceding it with "local "
+# transforms it into an assignment that sets the variable to the empty string.
+# That is too counter-intuitive, and can lead to subtle run-time malfunction.
+# The example below is less subtle in that with dash, it evokes the run-time
+# exception "dash: 1: local: 1: bad variable name".
+# We require a few additional shell features only when $EXEEXT is nonempty,
+# in order to support automatic $EXEEXT emulation:
+# - hyphen-containing alias names
+# - we prefer to use ${var#...} substitution, rather than having
+#   to work around lack of support for that feature.
+# The following code attempts to find a shell with support for these features.
+# If the current shell passes the test, we're done.  Otherwise, test other
+# shells until we find one that passes.  If one is found, re-exec it.
+# If no acceptable shell is found, skip the current test.
+#
+# The "...set -x; P=1 true 2>err..." test is to disqualify any shell that
+# emits "P=1" into err, as /bin/sh from SunOS 5.11 and OpenBSD 4.7 do.
+#
+# Use "9" to indicate success (rather than 0), in case some shell acts
+# like Solaris 10's /bin/sh but exits successfully instead of with status 2.
+
+# Eval this code in a subshell to determine a shell's suitability.
+# 10 - passes all tests; ok to use
+#  9 - ok, but enabling "set -x" corrupts app stderr; prefer higher score
+#  ? - not ok
+gl_shell_test_script_='
+test $(echo y) = y || exit 1
+LC_ALL=en_US.UTF-8 printf "\\351" 2>/dev/null \
+  | LC_ALL=C tr "\\351" x | LC_ALL=C grep "^x$" > /dev/null \
+  || exit 1
+printf "\\351" 2>/dev/null \
+  | LC_ALL=C tr "\\351" x | LC_ALL=C grep "^x$" > /dev/null \
+  || exit 1
+f_local_() { local v=1; }; f_local_ || exit 1
+f_dash_local_fail_() { local t=$(printf " 1"); }; f_dash_local_fail_
+score_=10
+if test "$VERBOSE" = yes; then
+  test -n "$( (exec 3>&1; set -x; P=1 true 2>&3) 2> /dev/null)" && score_=9
+fi
+test -z "$EXEEXT" && exit $score_
+shopt -s expand_aliases
+alias a-b="echo zoo"
+v=abx
+     test ${v%x} = ab \
+  && test ${v#a} = bx \
+  && test $(a-b) = zoo \
+  && exit $score_
+'
+
+if test "x$1" = "x--no-reexec"; then
+  shift
+else
+  # Assume a working shell.  Export to subshells (setup_ needs this).
+  gl_set_x_corrupts_stderr_=false
+  export gl_set_x_corrupts_stderr_
+
+  # Record the first marginally acceptable shell.
+  marginal_=
+
+  # Search for a shell that meets our requirements.
+  for re_shell_ in __current__ "${CONFIG_SHELL:-no_shell}" \
+      /bin/sh bash dash zsh pdksh fail
+  do
+    test "$re_shell_" = no_shell && continue
+
+    # If we've made it all the way to the sentinel, "fail" without
+    # finding even a marginal shell, skip this test.
+    if test "$re_shell_" = fail; then
+      test -z "$marginal_" && skip_ failed to find an adequate shell
+      re_shell_=$marginal_
+      break
+    fi
+
+    # When testing the current shell, simply "eval" the test code.
+    # Otherwise, run it via $re_shell_ -c ...
+    if test "$re_shell_" = __current__; then
+      # 'eval'ing this code makes Solaris 10's /bin/sh exit with
+      # $? set to 2.  It does not evaluate any of the code after the
+      # "unexpected" first '('.  Thus, we must run it in a subshell.
+      ( eval "$gl_shell_test_script_" ) > /dev/null 2>&1
+    else
+      "$re_shell_" -c "$gl_shell_test_script_" 2>/dev/null
+    fi
+
+    st_=$?
+
+    # $re_shell_ works just fine.  Use it.
+    if test $st_ = 10; then
+      gl_set_x_corrupts_stderr_=false
+      break
+    fi
+
+    # If this is our first marginally acceptable shell, remember it.
+    if test "$st_:$marginal_" = 9: ; then
+      marginal_="$re_shell_"
+      gl_set_x_corrupts_stderr_=true
+    fi
+  done
+
+  if test "$re_shell_" != __current__; then
+    # Found a usable shell.  Preserve -v and -x.
+    case $- in
+      *v*x* | *x*v*) opts_=-vx ;;
+      *v*) opts_=-v ;;
+      *x*) opts_=-x ;;
+      *) opts_= ;;
+    esac
+    re_shell=$re_shell_
+    export re_shell
+    exec "$re_shell_" $opts_ "$0" --no-reexec "$@"
+    echo "$ME_: exec failed" 1>&2
+    exit 127
+  fi
+fi
+
+# =============================================================================
+# Ensure the shell behaves reasonably.
+
+# If this is bash, turn off all aliases.
+test -n "$BASH_VERSION" && unalias -a
+
+# Note that when supporting $EXEEXT (transparently mapping from PROG_NAME to
+# PROG_NAME.exe), we want to support hyphen-containing names like test-acos.
+# That is part of the shell-selection test above.  Why use aliases rather
+# than functions?  Because support for hyphen-containing aliases is more
+# widespread than that for hyphen-containing function names.
+test -n "$EXEEXT" && test -n "$BASH_VERSION" && shopt -s expand_aliases
+
+# =============================================================================
+# Creating a temporary directory (needed by the core test framework)
+
+# Create a temporary directory, much like mktemp -d does.
+# Written by Jim Meyering.
+#
+# Usage: mktempd_ /tmp phoey.XXXXXXXXXX
+#
+# First, try to use the mktemp program.
+# Failing that, we'll roll our own mktemp-like function:
+#  - try to get random bytes from /dev/urandom
+#  - failing that, generate output from a combination of quickly-varying
+#      sources and gzip.  Ignore non-varying gzip header, and extract
+#      "random" bits from there.
+#  - given those bits, map to file-name bytes using tr, and try to create
+#      the desired directory.
+#  - make only $MAX_TRIES_ attempts
+
+# Helper function.  Print $N pseudo-random bytes from a-zA-Z0-9.
+rand_bytes_ ()
+{
+  n_=$1
+
+  # Maybe try openssl rand -base64 $n_prime_|tr '+/=\012' abcd first?
+  # But if they have openssl, they probably have mktemp, too.
+
+  chars_=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
+  dev_rand_=/dev/urandom
+  if test -r "$dev_rand_"; then
+    # Note: 256-length($chars_) == 194; 3 copies of $chars_ is 186 + 8 = 194.
+    dd ibs=$n_ count=1 if=$dev_rand_ 2>/dev/null \
+      | LC_ALL=C tr -c $chars_ 01234567$chars_$chars_$chars_
+    return
+  fi
+
+  n_plus_50_=`expr $n_ + 50`
+  cmds_='date; date +%N; free; who -a; w; ps auxww; ps -ef'
+  data_=` (eval "$cmds_") 2>&1 | gzip `
+
+  # Ensure that $data_ has length at least 50+$n_
+  while :; do
+    len_=`echo "$data_"|wc -c`
+    test $n_plus_50_ -le $len_ && break;
+    data_=` (echo "$data_"; eval "$cmds_") 2>&1 | gzip `
+  done
+
+  echo "$data_" \
+    | dd bs=1 skip=50 count=$n_ 2>/dev/null \
+    | LC_ALL=C tr -c $chars_ 01234567$chars_$chars_$chars_
+}
+
+mktempd_ ()
+{
+  case $# in
+  2);;
+  *) fail_ "Usage: mktempd_ DIR TEMPLATE";;
+  esac
+
+  destdir_=$1
+  template_=$2
+
+  MAX_TRIES_=4
+
+  # Disallow any trailing slash on specified destdir:
+  # it would subvert the post-mktemp "case"-based destdir test.
+  case $destdir_ in
+  / | //) destdir_slash_=$destdir;;
+  */) fail_ "invalid destination dir: remove trailing slash(es)";;
+  *) destdir_slash_=$destdir_/;;
+  esac
+
+  case $template_ in
+  *XXXX) ;;
+  *) fail_ \
+       "invalid template: $template_ (must have a suffix of at least 4 X's)";;
+  esac
+
+  # First, try to use mktemp.
+  d=`unset TMPDIR; { mktemp -d -t -p "$destdir_" "$template_"; } 2>/dev/null` &&
+
+  # The resulting name must be in the specified directory.
+  case $d in "$destdir_slash_"*) :;; *) false;; esac &&
+
+  # It must have created the directory.
+  test -d "$d" &&
+
+  # It must have 0700 permissions.  Handle sticky "S" bits.
+  perms=`ls -dgo "$d" 2>/dev/null` &&
+  case $perms in drwx--[-S]---*) :;; *) false;; esac && {
+    echo "$d"
+    return
+  }
+
+  # If we reach this point, we'll have to create a directory manually.
+
+  # Get a copy of the template without its suffix of X's.
+  base_template_=`echo "$template_"|sed 's/XX*$//'`
+
+  # Calculate how many X's we've just removed.
+  template_length_=`echo "$template_" | wc -c`
+  nx_=`echo "$base_template_" | wc -c`
+  nx_=`expr $template_length_ - $nx_`
+
+  err_=
+  i_=1
+  while :; do
+    X_=`rand_bytes_ $nx_`
+    candidate_dir_="$destdir_slash_$base_template_$X_"
+    err_=`mkdir -m 0700 "$candidate_dir_" 2>&1` \
+      && { echo "$candidate_dir_"; return; }
+    test $MAX_TRIES_ -le $i_ && break;
+    i_=`expr $i_ + 1`
+  done
+  fail_ "$err_"
+}
+
+# =============================================================================
+# Core test framework
+
+# An arbitrary prefix to help distinguish test directories.
+testdir_prefix_ () { printf gt; }
+
+# Set up the environment for the test to run in.
+setup_ ()
+{
+  if test "$VERBOSE" = yes; then
+    # Test whether set -x may cause the selected shell to corrupt an
+    # application's stderr.  Many do, including zsh-4.3.10 and the /bin/sh
+    # from SunOS 5.11, OpenBSD 4.7 and Irix 6.5.
+    # If enabling verbose output this way would cause trouble, simply
+    # issue a warning and refrain.
+    if $gl_set_x_corrupts_stderr_; then
+      warn_ "using SHELL=$SHELL with 'set -x' corrupts stderr"
+    else
+      set -x
+    fi
+  fi
+
+  initial_cwd_=$PWD
+
+  # Create and enter the temporary directory.
+  pfx_=`testdir_prefix_`
+  test_dir_=`mktempd_ "$initial_cwd_" "$pfx_-$ME_.XXXX"` \
+    || fail_ "failed to create temporary directory in $initial_cwd_"
+  cd "$test_dir_" || fail_ "failed to cd to temporary directory"
+  # Set variables srcdir, builddir, for the convenience of the test.
+  case $srcdir in
+    /* | ?:*) ;;
+    *) srcdir="../$srcdir" ;;
+  esac
+  builddir=".."
+  export srcdir builddir
+
+  # As autoconf-generated configure scripts do, ensure that IFS
+  # is defined initially, so that saving and restoring $IFS works.
+  gl_init_sh_nl_='
+'
+  IFS=" ""	$gl_init_sh_nl_"
+
+  # This trap statement, along with a trap on 0 below, ensure that the
+  # temporary directory, $test_dir_, is removed upon exit as well as
+  # upon receipt of any of the listed signals.
+  for sig_ in 1 2 3 13 15; do
+    eval "trap 'Exit $(expr $sig_ + 128)' $sig_"
+  done
+}
+
+# This is a stub function that is run upon trap (upon regular exit and
+# interrupt).  Override it with a per-test function, e.g., to unmount
+# a partition, or to undo any other global state changes.
+cleanup_ () { :; }
+
+# Run the user-overridable cleanup_ function, remove the temporary
+# directory and exit with the incoming value of $?.
+remove_tmp_ ()
+{
+  __st=$?
+  cleanup_
+  if test "$KEEP" = yes; then
+    echo "Not removing temporary directory $test_dir_"
+  else
+    # cd out of the directory we're about to remove
+    cd "$initial_cwd_" || cd / || cd /tmp
+    chmod -R u+rwx "$test_dir_"
+    # If removal fails and exit status was to be 0, then change it to 1.
+    rm -rf "$test_dir_" || { test $__st = 0 && __st=1; }
+  fi
+  exit $__st
+}
+
+# =============================================================================
+# Prepending directories to PATH
+
+# Given a directory name, DIR, if every entry in it that matches *.exe
+# contains only the specified bytes (see the case stmt below), then print
+# a space-separated list of those names and return 0.  Otherwise, don't
+# print anything and return 1.  Naming constraints apply also to DIR.
+find_exe_basenames_ ()
+{
+  feb_dir_=$1
+  feb_fail_=0
+  feb_result_=
+  feb_sp_=
+  for feb_file_ in $feb_dir_/*.exe; do
+    # If there was no *.exe file, or there existed a file named "*.exe" that
+    # was deleted between the above glob expansion and the existence test
+    # below, just skip it.
+    test "x$feb_file_" = "x$feb_dir_/*.exe" && test ! -f "$feb_file_" \
+      && continue
+    # Exempt [.exe, since we can't create a function by that name, yet
+    # we can't invoke [ by PATH search anyways due to shell builtins.
+    test "x$feb_file_" = "x$feb_dir_/[.exe" && continue
+    case $feb_file_ in
+      *[!-a-zA-Z/0-9_.+]*) feb_fail_=1; break;;
+      *) # Remove leading file name components as well as the .exe suffix.
+         feb_file_=${feb_file_##*/}
+         feb_file_=${feb_file_%.exe}
+         feb_result_="$feb_result_$feb_sp_$feb_file_";;
+    esac
+    feb_sp_=' '
+  done
+  test $feb_fail_ = 0 && printf %s "$feb_result_"
+  return $feb_fail_
+}
+
+# Consider the files in directory, $1.
+# For each file name of the form PROG.exe, create an alias named
+# PROG that simply invokes PROG.exe, then return 0.  If any selected
+# file name or the directory name, $1, contains an unexpected character,
+# define no alias and return 1.
+create_exe_shims_ ()
+{
+  case $EXEEXT in
+    '') return 0 ;;
+    .exe) ;;
+    *) echo "$0: unexpected \$EXEEXT value: $EXEEXT" 1>&2; return 1 ;;
+  esac
+
+  base_names_=`find_exe_basenames_ $1` \
+    || { echo "$0 (exe_shim): skipping directory: $1" 1>&2; return 0; }
+
+  if test -n "$base_names_"; then
+    for base_ in $base_names_; do
+      alias "$base_"="$base_$EXEEXT"
+    done
+  fi
+
+  return 0
+}
+
+# Use this function to prepend to PATH an absolute name for each
+# specified, possibly-$initial_cwd_-relative, directory.
+path_prepend_ ()
+{
+  while test $# != 0; do
+    path_dir_=$1
+    case $path_dir_ in
+      '') fail_ "invalid path dir: '$1'";;
+      /* | ?:*) abs_path_dir_=$path_dir_;;
+      *) abs_path_dir_=$initial_cwd_/$path_dir_;;
+    esac
+    case $abs_path_dir_ in
+      *$PATH_SEPARATOR*) fail_ "invalid path dir: '$abs_path_dir_'";;
+    esac
+    PATH="$abs_path_dir_$PATH_SEPARATOR$PATH"
+
+    # Create an alias, FOO, for each FOO.exe in this directory.
+    create_exe_shims_ "$abs_path_dir_" \
+      || fail_ "something failed (above): $abs_path_dir_"
+    shift
+  done
+  export PATH
+}
+
+# =============================================================================
+# Convenience environment variables for the tests
+
+# -----------------------------------------------------------------------------
+
+# Enable glibc's malloc-perturbing option.
+# This is useful for exposing code that depends on the fact that
+# malloc-related functions often return memory that is mostly zeroed.
+# If you have the time and cycles, use valgrind to do an even better job.
+: ${MALLOC_PERTURB_=87}
+export MALLOC_PERTURB_
+
+# -----------------------------------------------------------------------------
+
+# The interpreter for Bourne-shell scripts.
+# No special standards compatibility requirements.
+# Some environments, such as Android, don't have /bin/sh.
+if test -f /bin/sh$EXEEXT; then
+  BOURNE_SHELL=/bin/sh
+else
+  BOURNE_SHELL=sh
+fi
+
+# =============================================================================
+# Convenience functions for the tests
+
+# -----------------------------------------------------------------------------
+# Return value checking
+
+# This is used to simplify checking of the return value
+# which is useful when ensuring a command fails as desired.
+# I.e., just doing `command ... &&fail=1` will not catch
+# a segfault in command for example.  With this helper you
+# instead check an explicit exit code like
+#   returns_ 1 command ... || fail
+returns_ () {
+  # Disable tracing so it doesn't interfere with stderr of the wrapped command
+  { set +x; } 2>/dev/null
+
+  local exp_exit="$1"
+  shift
+  "$@"
+  test $? -eq $exp_exit && ret_=0 || ret_=1
+
+  if test "$VERBOSE" = yes && test "$gl_set_x_corrupts_stderr_" = false; then
+    set -x
+  fi
+  { return $ret_; } 2>/dev/null
+}
+
+# -----------------------------------------------------------------------------
+# Text file comparison
+
+# Emit a header similar to that from diff -u;  Print the simulated "diff"
+# command so that the order of arguments is clear.  Don't bother with @@ lines.
+emit_diff_u_header_ ()
+{
+  printf '%s\n' "diff -u $*" \
+    "--- $1	1970-01-01" \
+    "+++ $2	1970-01-01"
+}
+
+# Arrange not to let diff or cmp operate on /dev/null,
+# since on some systems (at least OSF/1 5.1), that doesn't work.
+# When there are not two arguments, or no argument is /dev/null, return 2.
+# When one argument is /dev/null and the other is not empty,
+# cat the nonempty file to stderr and return 1.
+# Otherwise, return 0.
+compare_dev_null_ ()
+{
+  test $# = 2 || return 2
+
+  if test "x$1" = x/dev/null; then
+    test -s "$2" || return 0
+    emit_diff_u_header_ "$@"; sed 's/^/+/' "$2"
+    return 1
+  fi
+
+  if test "x$2" = x/dev/null; then
+    test -s "$1" || return 0
+    emit_diff_u_header_ "$@"; sed 's/^/-/' "$1"
+    return 1
+  fi
+
+  return 2
+}
+
+for diff_opt_ in -u -U3 -c '' no; do
+  test "$diff_opt_" != no &&
+    diff_out_=`exec 2>/dev/null; diff $diff_opt_ "$0" "$0" < /dev/null` &&
+    break
+done
+if test "$diff_opt_" != no; then
+  if test -z "$diff_out_"; then
+    compare_ () { diff $diff_opt_ "$@"; }
+  else
+    compare_ ()
+    {
+      # If no differences were found, AIX and HP-UX 'diff' produce output
+      # like "No differences encountered".  Hide this output.
+      diff $diff_opt_ "$@" > diff.out
+      diff_status_=$?
+      test $diff_status_ -eq 0 || cat diff.out || diff_status_=2
+      rm -f diff.out || diff_status_=2
+      return $diff_status_
+    }
+  fi
+elif cmp -s /dev/null /dev/null 2>/dev/null; then
+  compare_ () { cmp -s "$@"; }
+else
+  compare_ () { cmp "$@"; }
+fi
+
+# Usage: compare EXPECTED ACTUAL
+#
+# Given compare_dev_null_'s preprocessing, defer to compare_ if 2 or more.
+# Otherwise, propagate $? to caller: any diffs have already been printed.
+compare ()
+{
+  # This looks like it can be factored to use a simple "case $?"
+  # after unchecked compare_dev_null_ invocation, but that would
+  # fail in a "set -e" environment.
+  if compare_dev_null_ "$@"; then
+    return 0
+  else
+    case $? in
+      1) return 1;;
+      *) compare_ "$@";;
+    esac
+  fi
+}
+
+# -----------------------------------------------------------------------------
+
+# If you want to override the testdir_prefix_ function,
+# or to add more utility functions, use this file.
+test -f "$srcdir/init.cfg" \
+  && . "$srcdir/init.cfg"
+
+# =============================================================================
+# Set up the environment for the test to run in.
+
+setup_ "$@"
+# This trap is here, rather than in the setup_ function, because some
+# shells run the exit trap at shell function exit, rather than script exit.
+trap remove_tmp_ 0
diff --git a/src/grep/gnulib-tests/inttostr.c b/src/grep/gnulib-tests/inttostr.c
new file mode 100644
index 0000000..2fafd1c
--- /dev/null
+++ b/src/grep/gnulib-tests/inttostr.c
@@ -0,0 +1,20 @@
+/* Convert 'int' integer to printable string.
+
+   Copyright (C) 2004-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define anytostr inttostr
+#define inttype int
+#include "anytostr.c"
diff --git a/src/grep/gnulib-tests/inttostr.h b/src/grep/gnulib-tests/inttostr.h
new file mode 100644
index 0000000..db1f8fa
--- /dev/null
+++ b/src/grep/gnulib-tests/inttostr.h
@@ -0,0 +1,29 @@
+/* inttostr.h -- convert integers to printable strings
+
+   Copyright (C) 2001-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert */
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include "intprops.h"
+
+_GL_ATTRIBUTE_NODISCARD char *imaxtostr (intmax_t, char *);
+_GL_ATTRIBUTE_NODISCARD char *inttostr (int, char *);
+_GL_ATTRIBUTE_NODISCARD char *offtostr (off_t, char *);
+_GL_ATTRIBUTE_NODISCARD char *uinttostr (unsigned int, char *);
+_GL_ATTRIBUTE_NODISCARD char *umaxtostr (uintmax_t, char *);
diff --git a/src/grep/gnulib-tests/ioctl.c b/src/grep/gnulib-tests/ioctl.c
new file mode 100644
index 0000000..ca90582
--- /dev/null
+++ b/src/grep/gnulib-tests/ioctl.c
@@ -0,0 +1,92 @@
+/* ioctl.c --- wrappers for Windows ioctl function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#include <sys/ioctl.h>
+
+#include <stdarg.h>
+
+#if HAVE_IOCTL
+
+/* Provide a wrapper with the POSIX prototype.  */
+# undef ioctl
+int
+rpl_ioctl (int fd, int request, ... /* {void *,char *} arg */)
+{
+  void *buf;
+  va_list args;
+
+  va_start (args, request);
+  buf = va_arg (args, void *);
+  va_end (args);
+
+  /* Cast 'request' so that when the system's ioctl function takes a 64-bit
+     request argument, the value gets zero-extended, not sign-extended.  */
+  return ioctl (fd, (unsigned int) request, buf);
+}
+
+#else /* mingw */
+
+# include <errno.h>
+
+/* Get HANDLE.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+
+# include "fd-hook.h"
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+
+static int
+primary_ioctl (int fd, int request, void *arg)
+{
+  /* We don't support FIONBIO on pipes here.  If you want to make pipe
+     fds non-blocking, use the gnulib 'nonblocking' module, until
+     gnulib implements fcntl F_GETFL / F_SETFL with O_NONBLOCK.  */
+
+  if ((HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE)
+    errno = ENOSYS;
+  else
+    errno = EBADF;
+  return -1;
+}
+
+int
+ioctl (int fd, int request, ... /* {void *,char *} arg */)
+{
+  void *arg;
+  va_list args;
+
+  va_start (args, request);
+  arg = va_arg (args, void *);
+  va_end (args);
+
+# if WINDOWS_SOCKETS
+  return execute_all_ioctl_hooks (primary_ioctl, fd, request, arg);
+# else
+  return primary_ioctl (fd, request, arg);
+# endif
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/itold.c b/src/grep/gnulib-tests/itold.c
new file mode 100644
index 0000000..7984866
--- /dev/null
+++ b/src/grep/gnulib-tests/itold.c
@@ -0,0 +1,28 @@
+/* Replacement for 'int' to 'long double' conversion routine.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <float.h>
+
+void
+_Qp_itoq (long double *result, int a)
+{
+  /* Convert from 'int' to 'double', then from 'double' to 'long double'.  */
+  *result = (double) a;
+}
diff --git a/src/grep/gnulib-tests/listen.c b/src/grep/gnulib-tests/listen.c
new file mode 100644
index 0000000..a145f82
--- /dev/null
+++ b/src/grep/gnulib-tests/listen.c
@@ -0,0 +1,49 @@
+/* listen.c --- wrappers for Windows listen function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef listen
+
+int
+rpl_listen (int fd, int backlog)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      int r = listen (sock, backlog);
+      if (r < 0)
+        set_winsock_errno ();
+
+      return r;
+    }
+}
diff --git a/src/grep/gnulib-tests/locale.c b/src/grep/gnulib-tests/locale.c
new file mode 100644
index 0000000..6185c4d
--- /dev/null
+++ b/src/grep/gnulib-tests/locale.c
@@ -0,0 +1,85 @@
+/* Program that prints the names of the categories of the current locale.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+/* We want to use the system's setlocale() function here, not the gnulib
+   override.  */
+#undef setlocale
+
+/* Specification:
+   <https://pubs.opengroup.org/onlinepubs/9699919799/utilities/locale.html>
+   Here we implement only the invocation without any command-line options.  */
+
+static const char *
+defaulted_getenv (const char *variable)
+{
+  const char *value = getenv (variable);
+  return (value != NULL ? value : "");
+}
+
+static void
+print_category (int category, const char *variable)
+{
+  const char *value = defaulted_getenv (variable);
+  if (value[0] != '\0' && defaulted_getenv ("LC_ALL")[0] == '\0')
+    /* The variable is set in the environment and not overridden by LC_ALL.  */
+    printf ("%s=%s\n", variable, value);
+  else
+    printf ("%s=\"%s\"\n", variable, setlocale (category, NULL));
+}
+
+int
+main (void)
+{
+  setlocale (LC_ALL, "");
+
+  printf ("LANG=%s\n", defaulted_getenv ("LANG"));
+  print_category (LC_CTYPE, "LC_CTYPE");
+  print_category (LC_NUMERIC, "LC_NUMERIC");
+  print_category (LC_TIME, "LC_TIME");
+  print_category (LC_COLLATE, "LC_COLLATE");
+  print_category (LC_MONETARY, "LC_MONETARY");
+  print_category (LC_MESSAGES, "LC_MESSAGES");
+#ifdef LC_PAPER
+  print_category (LC_PAPER, "LC_PAPER");
+#endif
+#ifdef LC_NAME
+  print_category (LC_NAME, "LC_NAME");
+#endif
+#ifdef LC_ADDRESS
+  print_category (LC_ADDRESS, "LC_ADDRESS");
+#endif
+#ifdef LC_TELEPHONE
+  print_category (LC_TELEPHONE, "LC_TELEPHONE");
+#endif
+#ifdef LC_MEASUREMENT
+  print_category (LC_MEASUREMENT, "LC_MEASUREMENT");
+#endif
+#ifdef LC_IDENTIFICATION
+  print_category (LC_IDENTIFICATION, "LC_IDENTIFICATION");
+#endif
+
+  printf ("LC_ALL=%s\n", defaulted_getenv ("LC_ALL"));
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/localename-table.c b/src/grep/gnulib-tests/localename-table.c
new file mode 100644
index 0000000..36c5ddc
--- /dev/null
+++ b/src/grep/gnulib-tests/localename-table.c
@@ -0,0 +1,48 @@
+/* Table that maps a locale object to the names of the locale categories.
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation; either version 2.1 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2018.  */
+
+#include <config.h>
+
+#if HAVE_WORKING_USELOCALE && HAVE_NAMELESS_LOCALES
+
+/* Specification.  */
+#include "localename-table.h"
+
+#include <stdint.h>
+
+/* A hash function for pointers.  */
+size_t _GL_ATTRIBUTE_CONST
+locale_hash_function (locale_t x)
+{
+  uintptr_t p = (uintptr_t) x;
+  size_t h = ((p % 4177) << 12) + ((p % 79) << 6) + (p % 61);
+  return h;
+}
+
+struct locale_hash_node * locale_hash_table[LOCALE_HASH_TABLE_SIZE]
+  /* = { NULL, ..., NULL } */;
+
+gl_rwlock_define_initialized(, locale_lock)
+
+#else
+
+/* This declaration is solely to ensure that after preprocessing
+   this file is never empty.  */
+typedef int dummy;
+
+#endif
diff --git a/src/grep/gnulib-tests/localename-table.h b/src/grep/gnulib-tests/localename-table.h
new file mode 100644
index 0000000..98f5b9f
--- /dev/null
+++ b/src/grep/gnulib-tests/localename-table.h
@@ -0,0 +1,69 @@
+/* Table that maps a locale object to the names of the locale categories.
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation; either version 2.1 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2018.  */
+
+#if HAVE_WORKING_USELOCALE && HAVE_NAMELESS_LOCALES
+
+# include <stddef.h>
+# include <locale.h>
+
+# include "glthread/lock.h"
+
+struct locale_categories_names
+  {
+    /* Locale category -> name (allocated with indefinite extent).  */
+    const char *category_name[6];
+  };
+
+/* A hash table of fixed size.  Multiple threads can access it read-only
+   simultaneously, but only one thread can insert into it or remove from it
+   at the same time.
+   This hash table has global scope, so that when an application uses both
+   GNU libintl and gnulib, the application sees only one hash table.  (When
+   linking statically with libintl, the fact that localename-table.c is a
+   separate compilation unit resolves the duplicate symbol conflict.  When
+   linking with libintl as a shared library, we rely on ELF and the symbol
+   conflict resolution implemented in the ELF dynamic loader here.)
+   Both the libintl overrides and the gnulib overrides of the functions
+   newlocale, duplocale, freelocale see the same hash table (and the same lock).
+   For this reason, the internal layout of the hash table and the hash function
+   MUST NEVER CHANGE.  If you need to change the internal layout or the hash
+   function, introduce versioning by appending a version suffix to the symbols
+   at the linker level.  */
+# define locale_hash_function libintl_locale_hash_function
+# define locale_hash_table libintl_locale_hash_table
+# define locale_lock libintl_locale_lock
+
+extern size_t _GL_ATTRIBUTE_CONST locale_hash_function (locale_t x);
+
+/* A node in a hash bucket collision list.  */
+struct locale_hash_node
+  {
+    struct locale_hash_node *next;
+    locale_t locale;
+    struct locale_categories_names names;
+  };
+
+# define LOCALE_HASH_TABLE_SIZE 101
+extern struct locale_hash_node * locale_hash_table[LOCALE_HASH_TABLE_SIZE];
+
+/* This lock protects the locale_hash_table against multiple simultaneous
+   accesses (except that multiple simultaneous read accesses are allowed).  */
+
+gl_rwlock_define(extern, locale_lock)
+
+#endif
diff --git a/src/grep/gnulib-tests/localename.c b/src/grep/gnulib-tests/localename.c
new file mode 100644
index 0000000..5ee6764
--- /dev/null
+++ b/src/grep/gnulib-tests/localename.c
@@ -0,0 +1,3451 @@
+/* Determine name of the currently selected locale.
+   Copyright (C) 1995-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation; either version 2.1 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Ulrich Drepper <drepper@gnu.org>, 1995.  */
+/* Native Windows code written by Tor Lillqvist <tml@iki.fi>.  */
+/* Mac OS X code written by Bruno Haible <bruno@clisp.org>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "localename.h"
+
+#include <limits.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <locale.h>
+#include <string.h>
+
+#include "flexmember.h"
+#include "setlocale_null.h"
+#include "thread-optim.h"
+
+#if HAVE_GOOD_USELOCALE
+/* Mac OS X 10.5 defines the locale_t type in <xlocale.h>.  */
+# if defined __APPLE__ && defined __MACH__
+#  include <xlocale.h>
+# endif
+# if (__GLIBC__ >= 2 && !defined __UCLIBC__) || (defined __linux__ && HAVE_LANGINFO_H) || defined __CYGWIN__
+#  include <langinfo.h>
+# endif
+# include "glthread/lock.h"
+# if defined __sun
+#  if HAVE_GETLOCALENAME_L
+/* Solaris >= 12.  */
+extern char * getlocalename_l(int, locale_t);
+#  elif HAVE_SOLARIS114_LOCALES
+#   include <sys/localedef.h>
+#  endif
+# endif
+# if HAVE_NAMELESS_LOCALES
+#  include "localename-table.h"
+# endif
+#endif
+
+#if HAVE_CFPREFERENCESCOPYAPPVALUE
+# include <CoreFoundation/CFString.h>
+# include <CoreFoundation/CFPreferences.h>
+#endif
+
+#if defined _WIN32 && !defined __CYGWIN__
+# define WINDOWS_NATIVE
+# include "glthread/lock.h"
+#endif
+
+#if defined WINDOWS_NATIVE || defined __CYGWIN__ /* Native Windows or Cygwin */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# include <winnls.h>
+/* List of language codes, sorted by value:
+   0x01 LANG_ARABIC
+   0x02 LANG_BULGARIAN
+   0x03 LANG_CATALAN
+   0x04 LANG_CHINESE
+   0x05 LANG_CZECH
+   0x06 LANG_DANISH
+   0x07 LANG_GERMAN
+   0x08 LANG_GREEK
+   0x09 LANG_ENGLISH
+   0x0a LANG_SPANISH
+   0x0b LANG_FINNISH
+   0x0c LANG_FRENCH
+   0x0d LANG_HEBREW
+   0x0e LANG_HUNGARIAN
+   0x0f LANG_ICELANDIC
+   0x10 LANG_ITALIAN
+   0x11 LANG_JAPANESE
+   0x12 LANG_KOREAN
+   0x13 LANG_DUTCH
+   0x14 LANG_NORWEGIAN
+   0x15 LANG_POLISH
+   0x16 LANG_PORTUGUESE
+   0x17 LANG_ROMANSH
+   0x18 LANG_ROMANIAN
+   0x19 LANG_RUSSIAN
+   0x1a LANG_CROATIAN == LANG_SERBIAN
+   0x1b LANG_SLOVAK
+   0x1c LANG_ALBANIAN
+   0x1d LANG_SWEDISH
+   0x1e LANG_THAI
+   0x1f LANG_TURKISH
+   0x20 LANG_URDU
+   0x21 LANG_INDONESIAN
+   0x22 LANG_UKRAINIAN
+   0x23 LANG_BELARUSIAN
+   0x24 LANG_SLOVENIAN
+   0x25 LANG_ESTONIAN
+   0x26 LANG_LATVIAN
+   0x27 LANG_LITHUANIAN
+   0x28 LANG_TAJIK
+   0x29 LANG_FARSI
+   0x2a LANG_VIETNAMESE
+   0x2b LANG_ARMENIAN
+   0x2c LANG_AZERI
+   0x2d LANG_BASQUE
+   0x2e LANG_SORBIAN
+   0x2f LANG_MACEDONIAN
+   0x30 LANG_SUTU
+   0x31 LANG_TSONGA
+   0x32 LANG_TSWANA
+   0x33 LANG_VENDA
+   0x34 LANG_XHOSA
+   0x35 LANG_ZULU
+   0x36 LANG_AFRIKAANS
+   0x37 LANG_GEORGIAN
+   0x38 LANG_FAEROESE
+   0x39 LANG_HINDI
+   0x3a LANG_MALTESE
+   0x3b LANG_SAMI
+   0x3c LANG_GAELIC
+   0x3d LANG_YIDDISH
+   0x3e LANG_MALAY
+   0x3f LANG_KAZAK
+   0x40 LANG_KYRGYZ
+   0x41 LANG_SWAHILI
+   0x42 LANG_TURKMEN
+   0x43 LANG_UZBEK
+   0x44 LANG_TATAR
+   0x45 LANG_BENGALI
+   0x46 LANG_PUNJABI
+   0x47 LANG_GUJARATI
+   0x48 LANG_ORIYA
+   0x49 LANG_TAMIL
+   0x4a LANG_TELUGU
+   0x4b LANG_KANNADA
+   0x4c LANG_MALAYALAM
+   0x4d LANG_ASSAMESE
+   0x4e LANG_MARATHI
+   0x4f LANG_SANSKRIT
+   0x50 LANG_MONGOLIAN
+   0x51 LANG_TIBETAN
+   0x52 LANG_WELSH
+   0x53 LANG_CAMBODIAN
+   0x54 LANG_LAO
+   0x55 LANG_BURMESE
+   0x56 LANG_GALICIAN
+   0x57 LANG_KONKANI
+   0x58 LANG_MANIPURI
+   0x59 LANG_SINDHI
+   0x5a LANG_SYRIAC
+   0x5b LANG_SINHALESE
+   0x5c LANG_CHEROKEE
+   0x5d LANG_INUKTITUT
+   0x5e LANG_AMHARIC
+   0x5f LANG_TAMAZIGHT
+   0x60 LANG_KASHMIRI
+   0x61 LANG_NEPALI
+   0x62 LANG_FRISIAN
+   0x63 LANG_PASHTO
+   0x64 LANG_TAGALOG
+   0x65 LANG_DIVEHI
+   0x66 LANG_EDO
+   0x67 LANG_FULFULDE
+   0x68 LANG_HAUSA
+   0x69 LANG_IBIBIO
+   0x6a LANG_YORUBA
+   0x6d LANG_BASHKIR
+   0x6e LANG_LUXEMBOURGISH
+   0x6f LANG_GREENLANDIC
+   0x70 LANG_IGBO
+   0x71 LANG_KANURI
+   0x72 LANG_OROMO
+   0x73 LANG_TIGRINYA
+   0x74 LANG_GUARANI
+   0x75 LANG_HAWAIIAN
+   0x76 LANG_LATIN
+   0x77 LANG_SOMALI
+   0x78 LANG_YI
+   0x79 LANG_PAPIAMENTU
+   0x7a LANG_MAPUDUNGUN
+   0x7c LANG_MOHAWK
+   0x7e LANG_BRETON
+   0x82 LANG_OCCITAN
+   0x83 LANG_CORSICAN
+   0x84 LANG_ALSATIAN
+   0x85 LANG_YAKUT
+   0x86 LANG_KICHE
+   0x87 LANG_KINYARWANDA
+   0x88 LANG_WOLOF
+   0x8c LANG_DARI
+   0x91 LANG_SCOTTISH_GAELIC
+*/
+/* Mingw headers don't have latest language and sublanguage codes.  */
+# ifndef LANG_AFRIKAANS
+# define LANG_AFRIKAANS 0x36
+# endif
+# ifndef LANG_ALBANIAN
+# define LANG_ALBANIAN 0x1c
+# endif
+# ifndef LANG_ALSATIAN
+# define LANG_ALSATIAN 0x84
+# endif
+# ifndef LANG_AMHARIC
+# define LANG_AMHARIC 0x5e
+# endif
+# ifndef LANG_ARABIC
+# define LANG_ARABIC 0x01
+# endif
+# ifndef LANG_ARMENIAN
+# define LANG_ARMENIAN 0x2b
+# endif
+# ifndef LANG_ASSAMESE
+# define LANG_ASSAMESE 0x4d
+# endif
+# ifndef LANG_AZERI
+# define LANG_AZERI 0x2c
+# endif
+# ifndef LANG_BASHKIR
+# define LANG_BASHKIR 0x6d
+# endif
+# ifndef LANG_BASQUE
+# define LANG_BASQUE 0x2d
+# endif
+# ifndef LANG_BELARUSIAN
+# define LANG_BELARUSIAN 0x23
+# endif
+# ifndef LANG_BENGALI
+# define LANG_BENGALI 0x45
+# endif
+# ifndef LANG_BRETON
+# define LANG_BRETON 0x7e
+# endif
+# ifndef LANG_BURMESE
+# define LANG_BURMESE 0x55
+# endif
+# ifndef LANG_CAMBODIAN
+# define LANG_CAMBODIAN 0x53
+# endif
+# ifndef LANG_CATALAN
+# define LANG_CATALAN 0x03
+# endif
+# ifndef LANG_CHEROKEE
+# define LANG_CHEROKEE 0x5c
+# endif
+# ifndef LANG_CORSICAN
+# define LANG_CORSICAN 0x83
+# endif
+# ifndef LANG_DARI
+# define LANG_DARI 0x8c
+# endif
+# ifndef LANG_DIVEHI
+# define LANG_DIVEHI 0x65
+# endif
+# ifndef LANG_EDO
+# define LANG_EDO 0x66
+# endif
+# ifndef LANG_ESTONIAN
+# define LANG_ESTONIAN 0x25
+# endif
+# ifndef LANG_FAEROESE
+# define LANG_FAEROESE 0x38
+# endif
+# ifndef LANG_FARSI
+# define LANG_FARSI 0x29
+# endif
+# ifndef LANG_FRISIAN
+# define LANG_FRISIAN 0x62
+# endif
+# ifndef LANG_FULFULDE
+# define LANG_FULFULDE 0x67
+# endif
+# ifndef LANG_GAELIC
+# define LANG_GAELIC 0x3c
+# endif
+# ifndef LANG_GALICIAN
+# define LANG_GALICIAN 0x56
+# endif
+# ifndef LANG_GEORGIAN
+# define LANG_GEORGIAN 0x37
+# endif
+# ifndef LANG_GREENLANDIC
+# define LANG_GREENLANDIC 0x6f
+# endif
+# ifndef LANG_GUARANI
+# define LANG_GUARANI 0x74
+# endif
+# ifndef LANG_GUJARATI
+# define LANG_GUJARATI 0x47
+# endif
+# ifndef LANG_HAUSA
+# define LANG_HAUSA 0x68
+# endif
+# ifndef LANG_HAWAIIAN
+# define LANG_HAWAIIAN 0x75
+# endif
+# ifndef LANG_HEBREW
+# define LANG_HEBREW 0x0d
+# endif
+# ifndef LANG_HINDI
+# define LANG_HINDI 0x39
+# endif
+# ifndef LANG_IBIBIO
+# define LANG_IBIBIO 0x69
+# endif
+# ifndef LANG_IGBO
+# define LANG_IGBO 0x70
+# endif
+# ifndef LANG_INDONESIAN
+# define LANG_INDONESIAN 0x21
+# endif
+# ifndef LANG_INUKTITUT
+# define LANG_INUKTITUT 0x5d
+# endif
+# ifndef LANG_KANNADA
+# define LANG_KANNADA 0x4b
+# endif
+# ifndef LANG_KANURI
+# define LANG_KANURI 0x71
+# endif
+# ifndef LANG_KASHMIRI
+# define LANG_KASHMIRI 0x60
+# endif
+# ifndef LANG_KAZAK
+# define LANG_KAZAK 0x3f
+# endif
+# ifndef LANG_KICHE
+# define LANG_KICHE 0x86
+# endif
+# ifndef LANG_KINYARWANDA
+# define LANG_KINYARWANDA 0x87
+# endif
+# ifndef LANG_KONKANI
+# define LANG_KONKANI 0x57
+# endif
+# ifndef LANG_KYRGYZ
+# define LANG_KYRGYZ 0x40
+# endif
+# ifndef LANG_LAO
+# define LANG_LAO 0x54
+# endif
+# ifndef LANG_LATIN
+# define LANG_LATIN 0x76
+# endif
+# ifndef LANG_LATVIAN
+# define LANG_LATVIAN 0x26
+# endif
+# ifndef LANG_LITHUANIAN
+# define LANG_LITHUANIAN 0x27
+# endif
+# ifndef LANG_LUXEMBOURGISH
+# define LANG_LUXEMBOURGISH 0x6e
+# endif
+# ifndef LANG_MACEDONIAN
+# define LANG_MACEDONIAN 0x2f
+# endif
+# ifndef LANG_MALAY
+# define LANG_MALAY 0x3e
+# endif
+# ifndef LANG_MALAYALAM
+# define LANG_MALAYALAM 0x4c
+# endif
+# ifndef LANG_MALTESE
+# define LANG_MALTESE 0x3a
+# endif
+# ifndef LANG_MANIPURI
+# define LANG_MANIPURI 0x58
+# endif
+# ifndef LANG_MAORI
+# define LANG_MAORI 0x81
+# endif
+# ifndef LANG_MAPUDUNGUN
+# define LANG_MAPUDUNGUN 0x7a
+# endif
+# ifndef LANG_MARATHI
+# define LANG_MARATHI 0x4e
+# endif
+# ifndef LANG_MOHAWK
+# define LANG_MOHAWK 0x7c
+# endif
+# ifndef LANG_MONGOLIAN
+# define LANG_MONGOLIAN 0x50
+# endif
+# ifndef LANG_NEPALI
+# define LANG_NEPALI 0x61
+# endif
+# ifndef LANG_OCCITAN
+# define LANG_OCCITAN 0x82
+# endif
+# ifndef LANG_ORIYA
+# define LANG_ORIYA 0x48
+# endif
+# ifndef LANG_OROMO
+# define LANG_OROMO 0x72
+# endif
+# ifndef LANG_PAPIAMENTU
+# define LANG_PAPIAMENTU 0x79
+# endif
+# ifndef LANG_PASHTO
+# define LANG_PASHTO 0x63
+# endif
+# ifndef LANG_PUNJABI
+# define LANG_PUNJABI 0x46
+# endif
+# ifndef LANG_QUECHUA
+# define LANG_QUECHUA 0x6b
+# endif
+# ifndef LANG_ROMANSH
+# define LANG_ROMANSH 0x17
+# endif
+# ifndef LANG_SAMI
+# define LANG_SAMI 0x3b
+# endif
+# ifndef LANG_SANSKRIT
+# define LANG_SANSKRIT 0x4f
+# endif
+# ifndef LANG_SCOTTISH_GAELIC
+# define LANG_SCOTTISH_GAELIC 0x91
+# endif
+# ifndef LANG_SERBIAN
+# define LANG_SERBIAN 0x1a
+# endif
+# ifndef LANG_SINDHI
+# define LANG_SINDHI 0x59
+# endif
+# ifndef LANG_SINHALESE
+# define LANG_SINHALESE 0x5b
+# endif
+# ifndef LANG_SLOVAK
+# define LANG_SLOVAK 0x1b
+# endif
+# ifndef LANG_SOMALI
+# define LANG_SOMALI 0x77
+# endif
+# ifndef LANG_SORBIAN
+# define LANG_SORBIAN 0x2e
+# endif
+# ifndef LANG_SOTHO
+# define LANG_SOTHO 0x6c
+# endif
+# ifndef LANG_SUTU
+# define LANG_SUTU 0x30
+# endif
+# ifndef LANG_SWAHILI
+# define LANG_SWAHILI 0x41
+# endif
+# ifndef LANG_SYRIAC
+# define LANG_SYRIAC 0x5a
+# endif
+# ifndef LANG_TAGALOG
+# define LANG_TAGALOG 0x64
+# endif
+# ifndef LANG_TAJIK
+# define LANG_TAJIK 0x28
+# endif
+# ifndef LANG_TAMAZIGHT
+# define LANG_TAMAZIGHT 0x5f
+# endif
+# ifndef LANG_TAMIL
+# define LANG_TAMIL 0x49
+# endif
+# ifndef LANG_TATAR
+# define LANG_TATAR 0x44
+# endif
+# ifndef LANG_TELUGU
+# define LANG_TELUGU 0x4a
+# endif
+# ifndef LANG_THAI
+# define LANG_THAI 0x1e
+# endif
+# ifndef LANG_TIBETAN
+# define LANG_TIBETAN 0x51
+# endif
+# ifndef LANG_TIGRINYA
+# define LANG_TIGRINYA 0x73
+# endif
+# ifndef LANG_TSONGA
+# define LANG_TSONGA 0x31
+# endif
+# ifndef LANG_TSWANA
+# define LANG_TSWANA 0x32
+# endif
+# ifndef LANG_TURKMEN
+# define LANG_TURKMEN 0x42
+# endif
+# ifndef LANG_UIGHUR
+# define LANG_UIGHUR 0x80
+# endif
+# ifndef LANG_UKRAINIAN
+# define LANG_UKRAINIAN 0x22
+# endif
+# ifndef LANG_URDU
+# define LANG_URDU 0x20
+# endif
+# ifndef LANG_UZBEK
+# define LANG_UZBEK 0x43
+# endif
+# ifndef LANG_VENDA
+# define LANG_VENDA 0x33
+# endif
+# ifndef LANG_VIETNAMESE
+# define LANG_VIETNAMESE 0x2a
+# endif
+# ifndef LANG_WELSH
+# define LANG_WELSH 0x52
+# endif
+# ifndef LANG_WOLOF
+# define LANG_WOLOF 0x88
+# endif
+# ifndef LANG_XHOSA
+# define LANG_XHOSA 0x34
+# endif
+# ifndef LANG_YAKUT
+# define LANG_YAKUT 0x85
+# endif
+# ifndef LANG_YI
+# define LANG_YI 0x78
+# endif
+# ifndef LANG_YIDDISH
+# define LANG_YIDDISH 0x3d
+# endif
+# ifndef LANG_YORUBA
+# define LANG_YORUBA 0x6a
+# endif
+# ifndef LANG_ZULU
+# define LANG_ZULU 0x35
+# endif
+# ifndef SUBLANG_AFRIKAANS_SOUTH_AFRICA
+# define SUBLANG_AFRIKAANS_SOUTH_AFRICA 0x01
+# endif
+# ifndef SUBLANG_ALBANIAN_ALBANIA
+# define SUBLANG_ALBANIAN_ALBANIA 0x01
+# endif
+# ifndef SUBLANG_ALSATIAN_FRANCE
+# define SUBLANG_ALSATIAN_FRANCE 0x01
+# endif
+# ifndef SUBLANG_AMHARIC_ETHIOPIA
+# define SUBLANG_AMHARIC_ETHIOPIA 0x01
+# endif
+# ifndef SUBLANG_ARABIC_SAUDI_ARABIA
+# define SUBLANG_ARABIC_SAUDI_ARABIA 0x01
+# endif
+# ifndef SUBLANG_ARABIC_IRAQ
+# define SUBLANG_ARABIC_IRAQ 0x02
+# endif
+# ifndef SUBLANG_ARABIC_EGYPT
+# define SUBLANG_ARABIC_EGYPT 0x03
+# endif
+# ifndef SUBLANG_ARABIC_LIBYA
+# define SUBLANG_ARABIC_LIBYA 0x04
+# endif
+# ifndef SUBLANG_ARABIC_ALGERIA
+# define SUBLANG_ARABIC_ALGERIA 0x05
+# endif
+# ifndef SUBLANG_ARABIC_MOROCCO
+# define SUBLANG_ARABIC_MOROCCO 0x06
+# endif
+# ifndef SUBLANG_ARABIC_TUNISIA
+# define SUBLANG_ARABIC_TUNISIA 0x07
+# endif
+# ifndef SUBLANG_ARABIC_OMAN
+# define SUBLANG_ARABIC_OMAN 0x08
+# endif
+# ifndef SUBLANG_ARABIC_YEMEN
+# define SUBLANG_ARABIC_YEMEN 0x09
+# endif
+# ifndef SUBLANG_ARABIC_SYRIA
+# define SUBLANG_ARABIC_SYRIA 0x0a
+# endif
+# ifndef SUBLANG_ARABIC_JORDAN
+# define SUBLANG_ARABIC_JORDAN 0x0b
+# endif
+# ifndef SUBLANG_ARABIC_LEBANON
+# define SUBLANG_ARABIC_LEBANON 0x0c
+# endif
+# ifndef SUBLANG_ARABIC_KUWAIT
+# define SUBLANG_ARABIC_KUWAIT 0x0d
+# endif
+# ifndef SUBLANG_ARABIC_UAE
+# define SUBLANG_ARABIC_UAE 0x0e
+# endif
+# ifndef SUBLANG_ARABIC_BAHRAIN
+# define SUBLANG_ARABIC_BAHRAIN 0x0f
+# endif
+# ifndef SUBLANG_ARABIC_QATAR
+# define SUBLANG_ARABIC_QATAR 0x10
+# endif
+# ifndef SUBLANG_ARMENIAN_ARMENIA
+# define SUBLANG_ARMENIAN_ARMENIA 0x01
+# endif
+# ifndef SUBLANG_ASSAMESE_INDIA
+# define SUBLANG_ASSAMESE_INDIA 0x01
+# endif
+# ifndef SUBLANG_AZERI_LATIN
+# define SUBLANG_AZERI_LATIN 0x01
+# endif
+# ifndef SUBLANG_AZERI_CYRILLIC
+# define SUBLANG_AZERI_CYRILLIC 0x02
+# endif
+# ifndef SUBLANG_BASHKIR_RUSSIA
+# define SUBLANG_BASHKIR_RUSSIA 0x01
+# endif
+# ifndef SUBLANG_BASQUE_BASQUE
+# define SUBLANG_BASQUE_BASQUE 0x01
+# endif
+# ifndef SUBLANG_BELARUSIAN_BELARUS
+# define SUBLANG_BELARUSIAN_BELARUS 0x01
+# endif
+# ifndef SUBLANG_BENGALI_INDIA
+# define SUBLANG_BENGALI_INDIA 0x01
+# endif
+# ifndef SUBLANG_BENGALI_BANGLADESH
+# define SUBLANG_BENGALI_BANGLADESH 0x02
+# endif
+# ifndef SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_LATIN
+# define SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_LATIN 0x05
+# endif
+# ifndef SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_CYRILLIC
+# define SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_CYRILLIC 0x08
+# endif
+# ifndef SUBLANG_BRETON_FRANCE
+# define SUBLANG_BRETON_FRANCE 0x01
+# endif
+# ifndef SUBLANG_BULGARIAN_BULGARIA
+# define SUBLANG_BULGARIAN_BULGARIA 0x01
+# endif
+# ifndef SUBLANG_CAMBODIAN_CAMBODIA
+# define SUBLANG_CAMBODIAN_CAMBODIA 0x01
+# endif
+# ifndef SUBLANG_CATALAN_SPAIN
+# define SUBLANG_CATALAN_SPAIN 0x01
+# endif
+# ifndef SUBLANG_CORSICAN_FRANCE
+# define SUBLANG_CORSICAN_FRANCE 0x01
+# endif
+# ifndef SUBLANG_CROATIAN_CROATIA
+# define SUBLANG_CROATIAN_CROATIA 0x01
+# endif
+# ifndef SUBLANG_CROATIAN_BOSNIA_HERZEGOVINA_LATIN
+# define SUBLANG_CROATIAN_BOSNIA_HERZEGOVINA_LATIN 0x04
+# endif
+# ifndef SUBLANG_CHINESE_MACAU
+# define SUBLANG_CHINESE_MACAU 0x05
+# endif
+# ifndef SUBLANG_CZECH_CZECH_REPUBLIC
+# define SUBLANG_CZECH_CZECH_REPUBLIC 0x01
+# endif
+# ifndef SUBLANG_DANISH_DENMARK
+# define SUBLANG_DANISH_DENMARK 0x01
+# endif
+# ifndef SUBLANG_DARI_AFGHANISTAN
+# define SUBLANG_DARI_AFGHANISTAN 0x01
+# endif
+# ifndef SUBLANG_DIVEHI_MALDIVES
+# define SUBLANG_DIVEHI_MALDIVES 0x01
+# endif
+# ifndef SUBLANG_DUTCH_SURINAM
+# define SUBLANG_DUTCH_SURINAM 0x03
+# endif
+# ifndef SUBLANG_ENGLISH_SOUTH_AFRICA
+# define SUBLANG_ENGLISH_SOUTH_AFRICA 0x07
+# endif
+# ifndef SUBLANG_ENGLISH_JAMAICA
+# define SUBLANG_ENGLISH_JAMAICA 0x08
+# endif
+# ifndef SUBLANG_ENGLISH_CARIBBEAN
+# define SUBLANG_ENGLISH_CARIBBEAN 0x09
+# endif
+# ifndef SUBLANG_ENGLISH_BELIZE
+# define SUBLANG_ENGLISH_BELIZE 0x0a
+# endif
+# ifndef SUBLANG_ENGLISH_TRINIDAD
+# define SUBLANG_ENGLISH_TRINIDAD 0x0b
+# endif
+# ifndef SUBLANG_ENGLISH_ZIMBABWE
+# define SUBLANG_ENGLISH_ZIMBABWE 0x0c
+# endif
+# ifndef SUBLANG_ENGLISH_PHILIPPINES
+# define SUBLANG_ENGLISH_PHILIPPINES 0x0d
+# endif
+# ifndef SUBLANG_ENGLISH_INDONESIA
+# define SUBLANG_ENGLISH_INDONESIA 0x0e
+# endif
+# ifndef SUBLANG_ENGLISH_HONGKONG
+# define SUBLANG_ENGLISH_HONGKONG 0x0f
+# endif
+# ifndef SUBLANG_ENGLISH_INDIA
+# define SUBLANG_ENGLISH_INDIA 0x10
+# endif
+# ifndef SUBLANG_ENGLISH_MALAYSIA
+# define SUBLANG_ENGLISH_MALAYSIA 0x11
+# endif
+# ifndef SUBLANG_ENGLISH_SINGAPORE
+# define SUBLANG_ENGLISH_SINGAPORE 0x12
+# endif
+# ifndef SUBLANG_ESTONIAN_ESTONIA
+# define SUBLANG_ESTONIAN_ESTONIA 0x01
+# endif
+# ifndef SUBLANG_FAEROESE_FAROE_ISLANDS
+# define SUBLANG_FAEROESE_FAROE_ISLANDS 0x01
+# endif
+# ifndef SUBLANG_FARSI_IRAN
+# define SUBLANG_FARSI_IRAN 0x01
+# endif
+# ifndef SUBLANG_FINNISH_FINLAND
+# define SUBLANG_FINNISH_FINLAND 0x01
+# endif
+# ifndef SUBLANG_FRENCH_LUXEMBOURG
+# define SUBLANG_FRENCH_LUXEMBOURG 0x05
+# endif
+# ifndef SUBLANG_FRENCH_MONACO
+# define SUBLANG_FRENCH_MONACO 0x06
+# endif
+# ifndef SUBLANG_FRENCH_WESTINDIES
+# define SUBLANG_FRENCH_WESTINDIES 0x07
+# endif
+# ifndef SUBLANG_FRENCH_REUNION
+# define SUBLANG_FRENCH_REUNION 0x08
+# endif
+# ifndef SUBLANG_FRENCH_CONGO
+# define SUBLANG_FRENCH_CONGO 0x09
+# endif
+# ifndef SUBLANG_FRENCH_SENEGAL
+# define SUBLANG_FRENCH_SENEGAL 0x0a
+# endif
+# ifndef SUBLANG_FRENCH_CAMEROON
+# define SUBLANG_FRENCH_CAMEROON 0x0b
+# endif
+# ifndef SUBLANG_FRENCH_COTEDIVOIRE
+# define SUBLANG_FRENCH_COTEDIVOIRE 0x0c
+# endif
+# ifndef SUBLANG_FRENCH_MALI
+# define SUBLANG_FRENCH_MALI 0x0d
+# endif
+# ifndef SUBLANG_FRENCH_MOROCCO
+# define SUBLANG_FRENCH_MOROCCO 0x0e
+# endif
+# ifndef SUBLANG_FRENCH_HAITI
+# define SUBLANG_FRENCH_HAITI 0x0f
+# endif
+# ifndef SUBLANG_FRISIAN_NETHERLANDS
+# define SUBLANG_FRISIAN_NETHERLANDS 0x01
+# endif
+# ifndef SUBLANG_GALICIAN_SPAIN
+# define SUBLANG_GALICIAN_SPAIN 0x01
+# endif
+# ifndef SUBLANG_GEORGIAN_GEORGIA
+# define SUBLANG_GEORGIAN_GEORGIA 0x01
+# endif
+# ifndef SUBLANG_GERMAN_LUXEMBOURG
+# define SUBLANG_GERMAN_LUXEMBOURG 0x04
+# endif
+# ifndef SUBLANG_GERMAN_LIECHTENSTEIN
+# define SUBLANG_GERMAN_LIECHTENSTEIN 0x05
+# endif
+# ifndef SUBLANG_GREEK_GREECE
+# define SUBLANG_GREEK_GREECE 0x01
+# endif
+# ifndef SUBLANG_GREENLANDIC_GREENLAND
+# define SUBLANG_GREENLANDIC_GREENLAND 0x01
+# endif
+# ifndef SUBLANG_GUJARATI_INDIA
+# define SUBLANG_GUJARATI_INDIA 0x01
+# endif
+# ifndef SUBLANG_HAUSA_NIGERIA_LATIN
+# define SUBLANG_HAUSA_NIGERIA_LATIN 0x01
+# endif
+# ifndef SUBLANG_HEBREW_ISRAEL
+# define SUBLANG_HEBREW_ISRAEL 0x01
+# endif
+# ifndef SUBLANG_HINDI_INDIA
+# define SUBLANG_HINDI_INDIA 0x01
+# endif
+# ifndef SUBLANG_HUNGARIAN_HUNGARY
+# define SUBLANG_HUNGARIAN_HUNGARY 0x01
+# endif
+# ifndef SUBLANG_ICELANDIC_ICELAND
+# define SUBLANG_ICELANDIC_ICELAND 0x01
+# endif
+# ifndef SUBLANG_IGBO_NIGERIA
+# define SUBLANG_IGBO_NIGERIA 0x01
+# endif
+# ifndef SUBLANG_INDONESIAN_INDONESIA
+# define SUBLANG_INDONESIAN_INDONESIA 0x01
+# endif
+# ifndef SUBLANG_INUKTITUT_CANADA
+# define SUBLANG_INUKTITUT_CANADA 0x01
+# endif
+# undef SUBLANG_INUKTITUT_CANADA_LATIN
+# define SUBLANG_INUKTITUT_CANADA_LATIN 0x02
+# undef SUBLANG_IRISH_IRELAND
+# define SUBLANG_IRISH_IRELAND 0x02
+# ifndef SUBLANG_JAPANESE_JAPAN
+# define SUBLANG_JAPANESE_JAPAN 0x01
+# endif
+# ifndef SUBLANG_KANNADA_INDIA
+# define SUBLANG_KANNADA_INDIA 0x01
+# endif
+# ifndef SUBLANG_KASHMIRI_INDIA
+# define SUBLANG_KASHMIRI_INDIA 0x02
+# endif
+# ifndef SUBLANG_KAZAK_KAZAKHSTAN
+# define SUBLANG_KAZAK_KAZAKHSTAN 0x01
+# endif
+# ifndef SUBLANG_KICHE_GUATEMALA
+# define SUBLANG_KICHE_GUATEMALA 0x01
+# endif
+# ifndef SUBLANG_KINYARWANDA_RWANDA
+# define SUBLANG_KINYARWANDA_RWANDA 0x01
+# endif
+# ifndef SUBLANG_KONKANI_INDIA
+# define SUBLANG_KONKANI_INDIA 0x01
+# endif
+# ifndef SUBLANG_KYRGYZ_KYRGYZSTAN
+# define SUBLANG_KYRGYZ_KYRGYZSTAN 0x01
+# endif
+# ifndef SUBLANG_LAO_LAOS
+# define SUBLANG_LAO_LAOS 0x01
+# endif
+# ifndef SUBLANG_LATVIAN_LATVIA
+# define SUBLANG_LATVIAN_LATVIA 0x01
+# endif
+# ifndef SUBLANG_LITHUANIAN_LITHUANIA
+# define SUBLANG_LITHUANIAN_LITHUANIA 0x01
+# endif
+# undef SUBLANG_LOWER_SORBIAN_GERMANY
+# define SUBLANG_LOWER_SORBIAN_GERMANY 0x02
+# ifndef SUBLANG_LUXEMBOURGISH_LUXEMBOURG
+# define SUBLANG_LUXEMBOURGISH_LUXEMBOURG 0x01
+# endif
+# ifndef SUBLANG_MACEDONIAN_MACEDONIA
+# define SUBLANG_MACEDONIAN_MACEDONIA 0x01
+# endif
+# ifndef SUBLANG_MALAY_MALAYSIA
+# define SUBLANG_MALAY_MALAYSIA 0x01
+# endif
+# ifndef SUBLANG_MALAY_BRUNEI_DARUSSALAM
+# define SUBLANG_MALAY_BRUNEI_DARUSSALAM 0x02
+# endif
+# ifndef SUBLANG_MALAYALAM_INDIA
+# define SUBLANG_MALAYALAM_INDIA 0x01
+# endif
+# ifndef SUBLANG_MALTESE_MALTA
+# define SUBLANG_MALTESE_MALTA 0x01
+# endif
+# ifndef SUBLANG_MAORI_NEW_ZEALAND
+# define SUBLANG_MAORI_NEW_ZEALAND 0x01
+# endif
+# ifndef SUBLANG_MAPUDUNGUN_CHILE
+# define SUBLANG_MAPUDUNGUN_CHILE 0x01
+# endif
+# ifndef SUBLANG_MARATHI_INDIA
+# define SUBLANG_MARATHI_INDIA 0x01
+# endif
+# ifndef SUBLANG_MOHAWK_CANADA
+# define SUBLANG_MOHAWK_CANADA 0x01
+# endif
+# ifndef SUBLANG_MONGOLIAN_CYRILLIC_MONGOLIA
+# define SUBLANG_MONGOLIAN_CYRILLIC_MONGOLIA 0x01
+# endif
+# ifndef SUBLANG_MONGOLIAN_PRC
+# define SUBLANG_MONGOLIAN_PRC 0x02
+# endif
+# ifndef SUBLANG_NEPALI_NEPAL
+# define SUBLANG_NEPALI_NEPAL 0x01
+# endif
+# ifndef SUBLANG_NEPALI_INDIA
+# define SUBLANG_NEPALI_INDIA 0x02
+# endif
+# ifndef SUBLANG_OCCITAN_FRANCE
+# define SUBLANG_OCCITAN_FRANCE 0x01
+# endif
+# ifndef SUBLANG_ORIYA_INDIA
+# define SUBLANG_ORIYA_INDIA 0x01
+# endif
+# ifndef SUBLANG_PASHTO_AFGHANISTAN
+# define SUBLANG_PASHTO_AFGHANISTAN 0x01
+# endif
+# ifndef SUBLANG_POLISH_POLAND
+# define SUBLANG_POLISH_POLAND 0x01
+# endif
+# ifndef SUBLANG_PUNJABI_INDIA
+# define SUBLANG_PUNJABI_INDIA 0x01
+# endif
+# ifndef SUBLANG_PUNJABI_PAKISTAN
+# define SUBLANG_PUNJABI_PAKISTAN 0x02
+# endif
+# ifndef SUBLANG_QUECHUA_BOLIVIA
+# define SUBLANG_QUECHUA_BOLIVIA 0x01
+# endif
+# ifndef SUBLANG_QUECHUA_ECUADOR
+# define SUBLANG_QUECHUA_ECUADOR 0x02
+# endif
+# ifndef SUBLANG_QUECHUA_PERU
+# define SUBLANG_QUECHUA_PERU 0x03
+# endif
+# ifndef SUBLANG_ROMANIAN_ROMANIA
+# define SUBLANG_ROMANIAN_ROMANIA 0x01
+# endif
+# ifndef SUBLANG_ROMANIAN_MOLDOVA
+# define SUBLANG_ROMANIAN_MOLDOVA 0x02
+# endif
+# ifndef SUBLANG_ROMANSH_SWITZERLAND
+# define SUBLANG_ROMANSH_SWITZERLAND 0x01
+# endif
+# ifndef SUBLANG_RUSSIAN_RUSSIA
+# define SUBLANG_RUSSIAN_RUSSIA 0x01
+# endif
+# ifndef SUBLANG_RUSSIAN_MOLDAVIA
+# define SUBLANG_RUSSIAN_MOLDAVIA 0x02
+# endif
+# ifndef SUBLANG_SAMI_NORTHERN_NORWAY
+# define SUBLANG_SAMI_NORTHERN_NORWAY 0x01
+# endif
+# ifndef SUBLANG_SAMI_NORTHERN_SWEDEN
+# define SUBLANG_SAMI_NORTHERN_SWEDEN 0x02
+# endif
+# ifndef SUBLANG_SAMI_NORTHERN_FINLAND
+# define SUBLANG_SAMI_NORTHERN_FINLAND 0x03
+# endif
+# ifndef SUBLANG_SAMI_LULE_NORWAY
+# define SUBLANG_SAMI_LULE_NORWAY 0x04
+# endif
+# ifndef SUBLANG_SAMI_LULE_SWEDEN
+# define SUBLANG_SAMI_LULE_SWEDEN 0x05
+# endif
+# ifndef SUBLANG_SAMI_SOUTHERN_NORWAY
+# define SUBLANG_SAMI_SOUTHERN_NORWAY 0x06
+# endif
+# ifndef SUBLANG_SAMI_SOUTHERN_SWEDEN
+# define SUBLANG_SAMI_SOUTHERN_SWEDEN 0x07
+# endif
+# undef SUBLANG_SAMI_SKOLT_FINLAND
+# define SUBLANG_SAMI_SKOLT_FINLAND 0x08
+# undef SUBLANG_SAMI_INARI_FINLAND
+# define SUBLANG_SAMI_INARI_FINLAND 0x09
+# ifndef SUBLANG_SANSKRIT_INDIA
+# define SUBLANG_SANSKRIT_INDIA 0x01
+# endif
+# ifndef SUBLANG_SERBIAN_LATIN
+# define SUBLANG_SERBIAN_LATIN 0x02
+# endif
+# ifndef SUBLANG_SERBIAN_CYRILLIC
+# define SUBLANG_SERBIAN_CYRILLIC 0x03
+# endif
+# ifndef SUBLANG_SINDHI_INDIA
+# define SUBLANG_SINDHI_INDIA 0x01
+# endif
+# undef SUBLANG_SINDHI_PAKISTAN
+# define SUBLANG_SINDHI_PAKISTAN 0x02
+# ifndef SUBLANG_SINDHI_AFGHANISTAN
+# define SUBLANG_SINDHI_AFGHANISTAN 0x02
+# endif
+# ifndef SUBLANG_SINHALESE_SRI_LANKA
+# define SUBLANG_SINHALESE_SRI_LANKA 0x01
+# endif
+# ifndef SUBLANG_SLOVAK_SLOVAKIA
+# define SUBLANG_SLOVAK_SLOVAKIA 0x01
+# endif
+# ifndef SUBLANG_SLOVENIAN_SLOVENIA
+# define SUBLANG_SLOVENIAN_SLOVENIA 0x01
+# endif
+# ifndef SUBLANG_SOTHO_SOUTH_AFRICA
+# define SUBLANG_SOTHO_SOUTH_AFRICA 0x01
+# endif
+# ifndef SUBLANG_SPANISH_GUATEMALA
+# define SUBLANG_SPANISH_GUATEMALA 0x04
+# endif
+# ifndef SUBLANG_SPANISH_COSTA_RICA
+# define SUBLANG_SPANISH_COSTA_RICA 0x05
+# endif
+# ifndef SUBLANG_SPANISH_PANAMA
+# define SUBLANG_SPANISH_PANAMA 0x06
+# endif
+# ifndef SUBLANG_SPANISH_DOMINICAN_REPUBLIC
+# define SUBLANG_SPANISH_DOMINICAN_REPUBLIC 0x07
+# endif
+# ifndef SUBLANG_SPANISH_VENEZUELA
+# define SUBLANG_SPANISH_VENEZUELA 0x08
+# endif
+# ifndef SUBLANG_SPANISH_COLOMBIA
+# define SUBLANG_SPANISH_COLOMBIA 0x09
+# endif
+# ifndef SUBLANG_SPANISH_PERU
+# define SUBLANG_SPANISH_PERU 0x0a
+# endif
+# ifndef SUBLANG_SPANISH_ARGENTINA
+# define SUBLANG_SPANISH_ARGENTINA 0x0b
+# endif
+# ifndef SUBLANG_SPANISH_ECUADOR
+# define SUBLANG_SPANISH_ECUADOR 0x0c
+# endif
+# ifndef SUBLANG_SPANISH_CHILE
+# define SUBLANG_SPANISH_CHILE 0x0d
+# endif
+# ifndef SUBLANG_SPANISH_URUGUAY
+# define SUBLANG_SPANISH_URUGUAY 0x0e
+# endif
+# ifndef SUBLANG_SPANISH_PARAGUAY
+# define SUBLANG_SPANISH_PARAGUAY 0x0f
+# endif
+# ifndef SUBLANG_SPANISH_BOLIVIA
+# define SUBLANG_SPANISH_BOLIVIA 0x10
+# endif
+# ifndef SUBLANG_SPANISH_EL_SALVADOR
+# define SUBLANG_SPANISH_EL_SALVADOR 0x11
+# endif
+# ifndef SUBLANG_SPANISH_HONDURAS
+# define SUBLANG_SPANISH_HONDURAS 0x12
+# endif
+# ifndef SUBLANG_SPANISH_NICARAGUA
+# define SUBLANG_SPANISH_NICARAGUA 0x13
+# endif
+# ifndef SUBLANG_SPANISH_PUERTO_RICO
+# define SUBLANG_SPANISH_PUERTO_RICO 0x14
+# endif
+# ifndef SUBLANG_SPANISH_US
+# define SUBLANG_SPANISH_US 0x15
+# endif
+# ifndef SUBLANG_SWAHILI_KENYA
+# define SUBLANG_SWAHILI_KENYA 0x01
+# endif
+# ifndef SUBLANG_SWEDISH_SWEDEN
+# define SUBLANG_SWEDISH_SWEDEN 0x01
+# endif
+# ifndef SUBLANG_SWEDISH_FINLAND
+# define SUBLANG_SWEDISH_FINLAND 0x02
+# endif
+# ifndef SUBLANG_SYRIAC_SYRIA
+# define SUBLANG_SYRIAC_SYRIA 0x01
+# endif
+# ifndef SUBLANG_TAGALOG_PHILIPPINES
+# define SUBLANG_TAGALOG_PHILIPPINES 0x01
+# endif
+# ifndef SUBLANG_TAJIK_TAJIKISTAN
+# define SUBLANG_TAJIK_TAJIKISTAN 0x01
+# endif
+# ifndef SUBLANG_TAMAZIGHT_ARABIC
+# define SUBLANG_TAMAZIGHT_ARABIC 0x01
+# endif
+# ifndef SUBLANG_TAMAZIGHT_ALGERIA_LATIN
+# define SUBLANG_TAMAZIGHT_ALGERIA_LATIN 0x02
+# endif
+# ifndef SUBLANG_TAMIL_INDIA
+# define SUBLANG_TAMIL_INDIA 0x01
+# endif
+# ifndef SUBLANG_TATAR_RUSSIA
+# define SUBLANG_TATAR_RUSSIA 0x01
+# endif
+# ifndef SUBLANG_TELUGU_INDIA
+# define SUBLANG_TELUGU_INDIA 0x01
+# endif
+# ifndef SUBLANG_THAI_THAILAND
+# define SUBLANG_THAI_THAILAND 0x01
+# endif
+# ifndef SUBLANG_TIBETAN_PRC
+# define SUBLANG_TIBETAN_PRC 0x01
+# endif
+# undef SUBLANG_TIBETAN_BHUTAN
+# define SUBLANG_TIBETAN_BHUTAN 0x02
+# ifndef SUBLANG_TIGRINYA_ETHIOPIA
+# define SUBLANG_TIGRINYA_ETHIOPIA 0x01
+# endif
+# ifndef SUBLANG_TIGRINYA_ERITREA
+# define SUBLANG_TIGRINYA_ERITREA 0x02
+# endif
+# ifndef SUBLANG_TSWANA_SOUTH_AFRICA
+# define SUBLANG_TSWANA_SOUTH_AFRICA 0x01
+# endif
+# ifndef SUBLANG_TURKISH_TURKEY
+# define SUBLANG_TURKISH_TURKEY 0x01
+# endif
+# ifndef SUBLANG_TURKMEN_TURKMENISTAN
+# define SUBLANG_TURKMEN_TURKMENISTAN 0x01
+# endif
+# ifndef SUBLANG_UIGHUR_PRC
+# define SUBLANG_UIGHUR_PRC 0x01
+# endif
+# ifndef SUBLANG_UKRAINIAN_UKRAINE
+# define SUBLANG_UKRAINIAN_UKRAINE 0x01
+# endif
+# ifndef SUBLANG_UPPER_SORBIAN_GERMANY
+# define SUBLANG_UPPER_SORBIAN_GERMANY 0x01
+# endif
+# ifndef SUBLANG_URDU_PAKISTAN
+# define SUBLANG_URDU_PAKISTAN 0x01
+# endif
+# ifndef SUBLANG_URDU_INDIA
+# define SUBLANG_URDU_INDIA 0x02
+# endif
+# ifndef SUBLANG_UZBEK_LATIN
+# define SUBLANG_UZBEK_LATIN 0x01
+# endif
+# ifndef SUBLANG_UZBEK_CYRILLIC
+# define SUBLANG_UZBEK_CYRILLIC 0x02
+# endif
+# ifndef SUBLANG_VIETNAMESE_VIETNAM
+# define SUBLANG_VIETNAMESE_VIETNAM 0x01
+# endif
+# ifndef SUBLANG_WELSH_UNITED_KINGDOM
+# define SUBLANG_WELSH_UNITED_KINGDOM 0x01
+# endif
+# ifndef SUBLANG_WOLOF_SENEGAL
+# define SUBLANG_WOLOF_SENEGAL 0x01
+# endif
+# ifndef SUBLANG_XHOSA_SOUTH_AFRICA
+# define SUBLANG_XHOSA_SOUTH_AFRICA 0x01
+# endif
+# ifndef SUBLANG_YAKUT_RUSSIA
+# define SUBLANG_YAKUT_RUSSIA 0x01
+# endif
+# ifndef SUBLANG_YI_PRC
+# define SUBLANG_YI_PRC 0x01
+# endif
+# ifndef SUBLANG_YORUBA_NIGERIA
+# define SUBLANG_YORUBA_NIGERIA 0x01
+# endif
+# ifndef SUBLANG_ZULU_SOUTH_AFRICA
+# define SUBLANG_ZULU_SOUTH_AFRICA 0x01
+# endif
+/* GetLocaleInfoA operations.  */
+# ifndef LOCALE_SNAME
+# define LOCALE_SNAME 0x5c
+# endif
+# ifndef LOCALE_NAME_MAX_LENGTH
+# define LOCALE_NAME_MAX_LENGTH 85
+# endif
+/* Don't assume that UNICODE is not defined.  */
+# undef GetLocaleInfo
+# define GetLocaleInfo GetLocaleInfoA
+# undef EnumSystemLocales
+# define EnumSystemLocales EnumSystemLocalesA
+#endif
+
+/* We want to use the system's setlocale() function here, not the gnulib
+   override.  */
+#undef setlocale
+
+
+#if HAVE_CFPREFERENCESCOPYAPPVALUE
+/* Mac OS X 10.4 or newer */
+
+/* Canonicalize a Mac OS X locale name to a Unix locale name.
+   NAME is a sufficiently large buffer.
+   On input, it contains the Mac OS X locale name.
+   On output, it contains the Unix locale name.  */
+# if !defined IN_LIBINTL
+static
+# endif
+void
+gl_locale_name_canonicalize (char *name)
+{
+  /* This conversion is based on a posting by
+     Deborah GoldSmith <goldsmit@apple.com> on 2005-03-08,
+     https://lists.apple.com/archives/carbon-dev/2005/Mar/msg00293.html */
+
+  /* Convert legacy (NeXTstep inherited) English names to Unix (ISO 639 and
+     ISO 3166) names.  Prior to Mac OS X 10.3, there is no API for doing this.
+     Therefore we do it ourselves, using a table based on the results of the
+     Mac OS X 10.3.8 function
+     CFLocaleCreateCanonicalLocaleIdentifierFromString().  */
+  typedef struct { const char legacy[21+1]; const char unixy[5+1]; }
+          legacy_entry;
+  static const legacy_entry legacy_table[] = {
+    { "Afrikaans",             "af" },
+    { "Albanian",              "sq" },
+    { "Amharic",               "am" },
+    { "Arabic",                "ar" },
+    { "Armenian",              "hy" },
+    { "Assamese",              "as" },
+    { "Aymara",                "ay" },
+    { "Azerbaijani",           "az" },
+    { "Basque",                "eu" },
+    { "Belarusian",            "be" },
+    { "Belorussian",           "be" },
+    { "Bengali",               "bn" },
+    { "Brazilian Portugese",   "pt_BR" },
+    { "Brazilian Portuguese",  "pt_BR" },
+    { "Breton",                "br" },
+    { "Bulgarian",             "bg" },
+    { "Burmese",               "my" },
+    { "Byelorussian",          "be" },
+    { "Catalan",               "ca" },
+    { "Chewa",                 "ny" },
+    { "Chichewa",              "ny" },
+    { "Chinese",               "zh" },
+    { "Chinese, Simplified",   "zh_CN" },
+    { "Chinese, Traditional",  "zh_TW" },
+    { "Chinese, Tradtional",   "zh_TW" },
+    { "Croatian",              "hr" },
+    { "Czech",                 "cs" },
+    { "Danish",                "da" },
+    { "Dutch",                 "nl" },
+    { "Dzongkha",              "dz" },
+    { "English",               "en" },
+    { "Esperanto",             "eo" },
+    { "Estonian",              "et" },
+    { "Faroese",               "fo" },
+    { "Farsi",                 "fa" },
+    { "Finnish",               "fi" },
+    { "Flemish",               "nl_BE" },
+    { "French",                "fr" },
+    { "Galician",              "gl" },
+    { "Gallegan",              "gl" },
+    { "Georgian",              "ka" },
+    { "German",                "de" },
+    { "Greek",                 "el" },
+    { "Greenlandic",           "kl" },
+    { "Guarani",               "gn" },
+    { "Gujarati",              "gu" },
+    { "Hawaiian",              "haw" }, /* Yes, "haw", not "cpe".  */
+    { "Hebrew",                "he" },
+    { "Hindi",                 "hi" },
+    { "Hungarian",             "hu" },
+    { "Icelandic",             "is" },
+    { "Indonesian",            "id" },
+    { "Inuktitut",             "iu" },
+    { "Irish",                 "ga" },
+    { "Italian",               "it" },
+    { "Japanese",              "ja" },
+    { "Javanese",              "jv" },
+    { "Kalaallisut",           "kl" },
+    { "Kannada",               "kn" },
+    { "Kashmiri",              "ks" },
+    { "Kazakh",                "kk" },
+    { "Khmer",                 "km" },
+    { "Kinyarwanda",           "rw" },
+    { "Kirghiz",               "ky" },
+    { "Korean",                "ko" },
+    { "Kurdish",               "ku" },
+    { "Latin",                 "la" },
+    { "Latvian",               "lv" },
+    { "Lithuanian",            "lt" },
+    { "Macedonian",            "mk" },
+    { "Malagasy",              "mg" },
+    { "Malay",                 "ms" },
+    { "Malayalam",             "ml" },
+    { "Maltese",               "mt" },
+    { "Manx",                  "gv" },
+    { "Marathi",               "mr" },
+    { "Moldavian",             "mo" },
+    { "Mongolian",             "mn" },
+    { "Nepali",                "ne" },
+    { "Norwegian",             "nb" }, /* Yes, "nb", not the obsolete "no".  */
+    { "Nyanja",                "ny" },
+    { "Nynorsk",               "nn" },
+    { "Oriya",                 "or" },
+    { "Oromo",                 "om" },
+    { "Panjabi",               "pa" },
+    { "Pashto",                "ps" },
+    { "Persian",               "fa" },
+    { "Polish",                "pl" },
+    { "Portuguese",            "pt" },
+    { "Portuguese, Brazilian", "pt_BR" },
+    { "Punjabi",               "pa" },
+    { "Pushto",                "ps" },
+    { "Quechua",               "qu" },
+    { "Romanian",              "ro" },
+    { "Ruanda",                "rw" },
+    { "Rundi",                 "rn" },
+    { "Russian",               "ru" },
+    { "Sami",                  "se_NO" }, /* Not just "se".  */
+    { "Sanskrit",              "sa" },
+    { "Scottish",              "gd" },
+    { "Serbian",               "sr" },
+    { "Simplified Chinese",    "zh_CN" },
+    { "Sindhi",                "sd" },
+    { "Sinhalese",             "si" },
+    { "Slovak",                "sk" },
+    { "Slovenian",             "sl" },
+    { "Somali",                "so" },
+    { "Spanish",               "es" },
+    { "Sundanese",             "su" },
+    { "Swahili",               "sw" },
+    { "Swedish",               "sv" },
+    { "Tagalog",               "tl" },
+    { "Tajik",                 "tg" },
+    { "Tajiki",                "tg" },
+    { "Tamil",                 "ta" },
+    { "Tatar",                 "tt" },
+    { "Telugu",                "te" },
+    { "Thai",                  "th" },
+    { "Tibetan",               "bo" },
+    { "Tigrinya",              "ti" },
+    { "Tongan",                "to" },
+    { "Traditional Chinese",   "zh_TW" },
+    { "Turkish",               "tr" },
+    { "Turkmen",               "tk" },
+    { "Uighur",                "ug" },
+    { "Ukrainian",             "uk" },
+    { "Urdu",                  "ur" },
+    { "Uzbek",                 "uz" },
+    { "Vietnamese",            "vi" },
+    { "Welsh",                 "cy" },
+    { "Yiddish",               "yi" }
+  };
+
+  /* Convert new-style locale names with language tags (ISO 639 and ISO 15924)
+     to Unix (ISO 639 and ISO 3166) names.  */
+  typedef struct { const char langtag[7+1]; const char unixy[12+1]; }
+          langtag_entry;
+  static const langtag_entry langtag_table[] = {
+    /* Mac OS X has "az-Arab", "az-Cyrl", "az-Latn".
+       The default script for az on Unix is Latin.  */
+    { "az-Latn", "az" },
+    /* Mac OS X has "bs-Cyrl", "bs-Latn".
+       The default script for bs on Unix is Latin.  */
+    { "bs-Latn", "bs" },
+    /* Mac OS X has "ga-dots".  Does not yet exist on Unix.  */
+    { "ga-dots", "ga" },
+    /* Mac OS X has "kk-Cyrl".
+       The default script for kk on Unix is Cyrillic.  */
+    { "kk-Cyrl", "kk" },
+    /* Mac OS X has "mn-Cyrl", "mn-Mong".
+       The default script for mn on Unix is Cyrillic.  */
+    { "mn-Cyrl", "mn" },
+    /* Mac OS X has "ms-Arab", "ms-Latn".
+       The default script for ms on Unix is Latin.  */
+    { "ms-Latn", "ms" },
+    /* Mac OS X has "pa-Arab", "pa-Guru".
+       Country codes are used to distinguish these on Unix.  */
+    { "pa-Arab", "pa_PK" },
+    { "pa-Guru", "pa_IN" },
+    /* Mac OS X has "shi-Latn", "shi-Tfng".  Does not yet exist on Unix.  */
+    /* Mac OS X has "sr-Cyrl", "sr-Latn".
+       The default script for sr on Unix is Cyrillic.  */
+    { "sr-Cyrl", "sr" },
+    /* Mac OS X has "tg-Cyrl".
+       The default script for tg on Unix is Cyrillic.  */
+    { "tg-Cyrl", "tg" },
+    /* Mac OS X has "tk-Cyrl".
+       The default script for tk on Unix is Cyrillic.  */
+    { "tk-Cyrl", "tk" },
+    /* Mac OS X has "tt-Cyrl".
+       The default script for tt on Unix is Cyrillic.  */
+    { "tt-Cyrl", "tt" },
+    /* Mac OS X has "uz-Arab", "uz-Cyrl", "uz-Latn".
+       The default script for uz on Unix is Latin.  */
+    { "uz-Latn", "uz" },
+    /* Mac OS X has "vai-Latn", "vai-Vaii".  Does not yet exist on Unix.  */
+    /* Mac OS X has "yue-Hans", "yue-Hant".
+       The default script for yue on Unix is Simplified Han.  */
+    { "yue-Hans", "yue" },
+    /* Mac OS X has "zh-Hans", "zh-Hant".
+       Country codes are used to distinguish these on Unix.  */
+    { "zh-Hans", "zh_CN" },
+    { "zh-Hant", "zh_TW" }
+  };
+
+  /* Convert script names (ISO 15924) to Unix conventions.
+     See https://www.unicode.org/iso15924/iso15924-codes.html  */
+  typedef struct { const char script[4+1]; const char unixy[9+1]; }
+          script_entry;
+  static const script_entry script_table[] = {
+    { "Arab", "arabic" },
+    { "Cyrl", "cyrillic" },
+    { "Latn", "latin" },
+    { "Mong", "mongolian" }
+  };
+
+  /* Step 1: Convert using legacy_table.  */
+  if (name[0] >= 'A' && name[0] <= 'Z')
+    {
+      unsigned int i1, i2;
+      i1 = 0;
+      i2 = sizeof (legacy_table) / sizeof (legacy_entry);
+      while (i2 - i1 > 1)
+        {
+          /* At this point we know that if name occurs in legacy_table,
+             its index must be >= i1 and < i2.  */
+          unsigned int i = (i1 + i2) >> 1;
+          const legacy_entry *p = &legacy_table[i];
+          if (strcmp (name, p->legacy) < 0)
+            i2 = i;
+          else
+            i1 = i;
+        }
+      if (strcmp (name, legacy_table[i1].legacy) == 0)
+        {
+          strcpy (name, legacy_table[i1].unixy);
+          return;
+        }
+    }
+
+  /* Step 2: Convert using langtag_table and script_table.  */
+  if (strlen (name) == 7 && name[2] == '-')
+    {
+      unsigned int i1, i2;
+      i1 = 0;
+      i2 = sizeof (langtag_table) / sizeof (langtag_entry);
+      while (i2 - i1 > 1)
+        {
+          /* At this point we know that if name occurs in langtag_table,
+             its index must be >= i1 and < i2.  */
+          unsigned int i = (i1 + i2) >> 1;
+          const langtag_entry *p = &langtag_table[i];
+          if (strcmp (name, p->langtag) < 0)
+            i2 = i;
+          else
+            i1 = i;
+        }
+      if (strcmp (name, langtag_table[i1].langtag) == 0)
+        {
+          strcpy (name, langtag_table[i1].unixy);
+          return;
+        }
+
+      i1 = 0;
+      i2 = sizeof (script_table) / sizeof (script_entry);
+      while (i2 - i1 > 1)
+        {
+          /* At this point we know that if (name + 3) occurs in script_table,
+             its index must be >= i1 and < i2.  */
+          unsigned int i = (i1 + i2) >> 1;
+          const script_entry *p = &script_table[i];
+          if (strcmp (name + 3, p->script) < 0)
+            i2 = i;
+          else
+            i1 = i;
+        }
+      if (strcmp (name + 3, script_table[i1].script) == 0)
+        {
+          name[2] = '@';
+          strcpy (name + 3, script_table[i1].unixy);
+          return;
+        }
+    }
+
+  /* Step 3: Convert new-style dash to Unix underscore. */
+  {
+    char *p;
+    for (p = name; *p != '\0'; p++)
+      if (*p == '-')
+        *p = '_';
+  }
+}
+
+#endif
+
+
+#if defined WINDOWS_NATIVE || defined __CYGWIN__ /* Native Windows or Cygwin */
+
+/* Canonicalize a Windows native locale name to a Unix locale name.
+   NAME is a sufficiently large buffer.
+   On input, it contains the Windows locale name.
+   On output, it contains the Unix locale name.  */
+# if !defined IN_LIBINTL
+static
+# endif
+void
+gl_locale_name_canonicalize (char *name)
+{
+  /* FIXME: This is probably incomplete: it does not handle "zh-Hans" and
+     "zh-Hant".  */
+  char *p;
+
+  for (p = name; *p != '\0'; p++)
+    if (*p == '-')
+      {
+        *p = '_';
+        p++;
+        for (; *p != '\0'; p++)
+          {
+            if (*p >= 'a' && *p <= 'z')
+              *p += 'A' - 'a';
+            if (*p == '-')
+              {
+                *p = '\0';
+                return;
+              }
+          }
+        return;
+      }
+}
+
+# if !defined IN_LIBINTL
+static
+# endif
+const char *
+gl_locale_name_from_win32_LANGID (LANGID langid)
+{
+  /* Activate the new code only when the GETTEXT_MUI environment variable is
+     set, for the time being, since the new code is not well tested.  */
+  if (getenv ("GETTEXT_MUI") != NULL)
+    {
+      static char namebuf[256];
+
+      /* Query the system's notion of locale name.
+         On Windows95/98/ME, GetLocaleInfoA returns some incorrect results.
+         But we don't need to support systems that are so old.  */
+      if (GetLocaleInfoA (MAKELCID (langid, SORT_DEFAULT), LOCALE_SNAME,
+                          namebuf, sizeof (namebuf) - 1))
+        {
+          /* Convert it to a Unix locale name.  */
+          gl_locale_name_canonicalize (namebuf);
+          return namebuf;
+        }
+    }
+  /* Internet Explorer has an LCID to RFC3066 name mapping stored in
+     HKEY_CLASSES_ROOT\Mime\Database\Rfc1766.  But we better don't use that
+     since IE's i18n subsystem is known to be inconsistent with the native
+     Windows base (e.g. they have different character conversion facilities
+     that produce different results).  */
+  /* Use our own table.  */
+  {
+    int primary, sub;
+
+    /* Split into language and territory part.  */
+    primary = PRIMARYLANGID (langid);
+    sub = SUBLANGID (langid);
+
+    /* Dispatch on language.
+       See also https://www.unicode.org/unicode/onlinedat/languages.html .
+       For details about languages, see https://www.ethnologue.com/ .  */
+    switch (primary)
+      {
+      case LANG_AFRIKAANS:
+        switch (sub)
+          {
+          case SUBLANG_AFRIKAANS_SOUTH_AFRICA: return "af_ZA";
+          }
+        return "af";
+      case LANG_ALBANIAN:
+        switch (sub)
+          {
+          case SUBLANG_ALBANIAN_ALBANIA: return "sq_AL";
+          }
+        return "sq";
+      case LANG_ALSATIAN:
+        switch (sub)
+          {
+          case SUBLANG_ALSATIAN_FRANCE: return "gsw_FR";
+          }
+        return "gsw";
+      case LANG_AMHARIC:
+        switch (sub)
+          {
+          case SUBLANG_AMHARIC_ETHIOPIA: return "am_ET";
+          }
+        return "am";
+      case LANG_ARABIC:
+        switch (sub)
+          {
+          case SUBLANG_ARABIC_SAUDI_ARABIA: return "ar_SA";
+          case SUBLANG_ARABIC_IRAQ: return "ar_IQ";
+          case SUBLANG_ARABIC_EGYPT: return "ar_EG";
+          case SUBLANG_ARABIC_LIBYA: return "ar_LY";
+          case SUBLANG_ARABIC_ALGERIA: return "ar_DZ";
+          case SUBLANG_ARABIC_MOROCCO: return "ar_MA";
+          case SUBLANG_ARABIC_TUNISIA: return "ar_TN";
+          case SUBLANG_ARABIC_OMAN: return "ar_OM";
+          case SUBLANG_ARABIC_YEMEN: return "ar_YE";
+          case SUBLANG_ARABIC_SYRIA: return "ar_SY";
+          case SUBLANG_ARABIC_JORDAN: return "ar_JO";
+          case SUBLANG_ARABIC_LEBANON: return "ar_LB";
+          case SUBLANG_ARABIC_KUWAIT: return "ar_KW";
+          case SUBLANG_ARABIC_UAE: return "ar_AE";
+          case SUBLANG_ARABIC_BAHRAIN: return "ar_BH";
+          case SUBLANG_ARABIC_QATAR: return "ar_QA";
+          }
+        return "ar";
+      case LANG_ARMENIAN:
+        switch (sub)
+          {
+          case SUBLANG_ARMENIAN_ARMENIA: return "hy_AM";
+          }
+        return "hy";
+      case LANG_ASSAMESE:
+        switch (sub)
+          {
+          case SUBLANG_ASSAMESE_INDIA: return "as_IN";
+          }
+        return "as";
+      case LANG_AZERI:
+        switch (sub)
+          {
+          /* FIXME: Adjust this when Azerbaijani locales appear on Unix.  */
+          case 0x1e: return "az@latin";
+          case SUBLANG_AZERI_LATIN: return "az_AZ@latin";
+          case 0x1d: return "az@cyrillic";
+          case SUBLANG_AZERI_CYRILLIC: return "az_AZ@cyrillic";
+          }
+        return "az";
+      case LANG_BASHKIR:
+        switch (sub)
+          {
+          case SUBLANG_BASHKIR_RUSSIA: return "ba_RU";
+          }
+        return "ba";
+      case LANG_BASQUE:
+        switch (sub)
+          {
+          case SUBLANG_BASQUE_BASQUE: return "eu_ES";
+          }
+        return "eu"; /* Ambiguous: could be "eu_ES" or "eu_FR".  */
+      case LANG_BELARUSIAN:
+        switch (sub)
+          {
+          case SUBLANG_BELARUSIAN_BELARUS: return "be_BY";
+          }
+        return "be";
+      case LANG_BENGALI:
+        switch (sub)
+          {
+          case SUBLANG_BENGALI_INDIA: return "bn_IN";
+          case SUBLANG_BENGALI_BANGLADESH: return "bn_BD";
+          }
+        return "bn";
+      case LANG_BRETON:
+        switch (sub)
+          {
+          case SUBLANG_BRETON_FRANCE: return "br_FR";
+          }
+        return "br";
+      case LANG_BULGARIAN:
+        switch (sub)
+          {
+          case SUBLANG_BULGARIAN_BULGARIA: return "bg_BG";
+          }
+        return "bg";
+      case LANG_BURMESE:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "my_MM";
+          }
+        return "my";
+      case LANG_CAMBODIAN:
+        switch (sub)
+          {
+          case SUBLANG_CAMBODIAN_CAMBODIA: return "km_KH";
+          }
+        return "km";
+      case LANG_CATALAN:
+        switch (sub)
+          {
+          case SUBLANG_CATALAN_SPAIN: return "ca_ES";
+          }
+        return "ca";
+      case LANG_CHEROKEE:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "chr_US";
+          }
+        return "chr";
+      case LANG_CHINESE:
+        switch (sub)
+          {
+          case SUBLANG_CHINESE_TRADITIONAL: case 0x1f: return "zh_TW";
+          case SUBLANG_CHINESE_SIMPLIFIED: case 0x00: return "zh_CN";
+          case SUBLANG_CHINESE_HONGKONG: return "zh_HK"; /* traditional */
+          case SUBLANG_CHINESE_SINGAPORE: return "zh_SG"; /* simplified */
+          case SUBLANG_CHINESE_MACAU: return "zh_MO"; /* traditional */
+          }
+        return "zh";
+      case LANG_CORSICAN:
+        switch (sub)
+          {
+          case SUBLANG_CORSICAN_FRANCE: return "co_FR";
+          }
+        return "co";
+      case LANG_CROATIAN:      /* LANG_CROATIAN == LANG_SERBIAN == LANG_BOSNIAN
+                                * What used to be called Serbo-Croatian
+                                * should really now be two separate
+                                * languages because of political reasons.
+                                * (Says tml, who knows nothing about Serbian
+                                * or Croatian.)
+                                * (I can feel those flames coming already.)
+                                */
+        switch (sub)
+          {
+          /* Croatian */
+          case 0x00: return "hr";
+          case SUBLANG_CROATIAN_CROATIA: return "hr_HR";
+          case SUBLANG_CROATIAN_BOSNIA_HERZEGOVINA_LATIN: return "hr_BA";
+          /* Serbian */
+          case 0x1f: return "sr";
+          case 0x1c: return "sr"; /* latin */
+          case SUBLANG_SERBIAN_LATIN: return "sr_CS"; /* latin */
+          case 0x09: return "sr_RS"; /* latin */
+          case 0x0b: return "sr_ME"; /* latin */
+          case 0x06: return "sr_BA"; /* latin */
+          case 0x1b: return "sr@cyrillic";
+          case SUBLANG_SERBIAN_CYRILLIC: return "sr_CS@cyrillic";
+          case 0x0a: return "sr_RS@cyrillic";
+          case 0x0c: return "sr_ME@cyrillic";
+          case 0x07: return "sr_BA@cyrillic";
+          /* Bosnian */
+          case 0x1e: return "bs";
+          case 0x1a: return "bs"; /* latin */
+          case SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_LATIN: return "bs_BA"; /* latin */
+          case 0x19: return "bs@cyrillic";
+          case SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_CYRILLIC: return "bs_BA@cyrillic";
+          }
+        return "hr";
+      case LANG_CZECH:
+        switch (sub)
+          {
+          case SUBLANG_CZECH_CZECH_REPUBLIC: return "cs_CZ";
+          }
+        return "cs";
+      case LANG_DANISH:
+        switch (sub)
+          {
+          case SUBLANG_DANISH_DENMARK: return "da_DK";
+          }
+        return "da";
+      case LANG_DARI:
+        /* FIXME: Adjust this when such locales appear on Unix.  */
+        switch (sub)
+          {
+          case SUBLANG_DARI_AFGHANISTAN: return "prs_AF";
+          }
+        return "prs";
+      case LANG_DIVEHI:
+        switch (sub)
+          {
+          case SUBLANG_DIVEHI_MALDIVES: return "dv_MV";
+          }
+        return "dv";
+      case LANG_DUTCH:
+        switch (sub)
+          {
+          case SUBLANG_DUTCH: return "nl_NL";
+          case SUBLANG_DUTCH_BELGIAN: /* FLEMISH, VLAAMS */ return "nl_BE";
+          case SUBLANG_DUTCH_SURINAM: return "nl_SR";
+          }
+        return "nl";
+      case LANG_EDO:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "bin_NG";
+          }
+        return "bin";
+      case LANG_ENGLISH:
+        switch (sub)
+          {
+          /* SUBLANG_ENGLISH_US == SUBLANG_DEFAULT. Heh. I thought
+           * English was the language spoken in England.
+           * Oh well.
+           */
+          case SUBLANG_ENGLISH_US: return "en_US";
+          case SUBLANG_ENGLISH_UK: return "en_GB";
+          case SUBLANG_ENGLISH_AUS: return "en_AU";
+          case SUBLANG_ENGLISH_CAN: return "en_CA";
+          case SUBLANG_ENGLISH_NZ: return "en_NZ";
+          case SUBLANG_ENGLISH_EIRE: return "en_IE";
+          case SUBLANG_ENGLISH_SOUTH_AFRICA: return "en_ZA";
+          case SUBLANG_ENGLISH_JAMAICA: return "en_JM";
+          case SUBLANG_ENGLISH_CARIBBEAN: return "en_GD"; /* Grenada? */
+          case SUBLANG_ENGLISH_BELIZE: return "en_BZ";
+          case SUBLANG_ENGLISH_TRINIDAD: return "en_TT";
+          case SUBLANG_ENGLISH_ZIMBABWE: return "en_ZW";
+          case SUBLANG_ENGLISH_PHILIPPINES: return "en_PH";
+          case SUBLANG_ENGLISH_INDONESIA: return "en_ID";
+          case SUBLANG_ENGLISH_HONGKONG: return "en_HK";
+          case SUBLANG_ENGLISH_INDIA: return "en_IN";
+          case SUBLANG_ENGLISH_MALAYSIA: return "en_MY";
+          case SUBLANG_ENGLISH_SINGAPORE: return "en_SG";
+          }
+        return "en";
+      case LANG_ESTONIAN:
+        switch (sub)
+          {
+          case SUBLANG_ESTONIAN_ESTONIA: return "et_EE";
+          }
+        return "et";
+      case LANG_FAEROESE:
+        switch (sub)
+          {
+          case SUBLANG_FAEROESE_FAROE_ISLANDS: return "fo_FO";
+          }
+        return "fo";
+      case LANG_FARSI:
+        switch (sub)
+          {
+          case SUBLANG_FARSI_IRAN: return "fa_IR";
+          }
+        return "fa";
+      case LANG_FINNISH:
+        switch (sub)
+          {
+          case SUBLANG_FINNISH_FINLAND: return "fi_FI";
+          }
+        return "fi";
+      case LANG_FRENCH:
+        switch (sub)
+          {
+          case SUBLANG_FRENCH: return "fr_FR";
+          case SUBLANG_FRENCH_BELGIAN: /* WALLOON */ return "fr_BE";
+          case SUBLANG_FRENCH_CANADIAN: return "fr_CA";
+          case SUBLANG_FRENCH_SWISS: return "fr_CH";
+          case SUBLANG_FRENCH_LUXEMBOURG: return "fr_LU";
+          case SUBLANG_FRENCH_MONACO: return "fr_MC";
+          case SUBLANG_FRENCH_WESTINDIES: return "fr"; /* Caribbean? */
+          case SUBLANG_FRENCH_REUNION: return "fr_RE";
+          case SUBLANG_FRENCH_CONGO: return "fr_CG";
+          case SUBLANG_FRENCH_SENEGAL: return "fr_SN";
+          case SUBLANG_FRENCH_CAMEROON: return "fr_CM";
+          case SUBLANG_FRENCH_COTEDIVOIRE: return "fr_CI";
+          case SUBLANG_FRENCH_MALI: return "fr_ML";
+          case SUBLANG_FRENCH_MOROCCO: return "fr_MA";
+          case SUBLANG_FRENCH_HAITI: return "fr_HT";
+          }
+        return "fr";
+      case LANG_FRISIAN:
+        switch (sub)
+          {
+          case SUBLANG_FRISIAN_NETHERLANDS: return "fy_NL";
+          }
+        return "fy";
+      case LANG_FULFULDE:
+        /* Spoken in Nigeria, Guinea, Senegal, Mali, Niger, Cameroon, Benin.  */
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "ff_NG";
+          }
+        return "ff";
+      case LANG_GAELIC:
+        switch (sub)
+          {
+          case 0x01: /* SCOTTISH */
+            /* old, superseded by LANG_SCOTTISH_GAELIC */
+            return "gd_GB";
+          case SUBLANG_IRISH_IRELAND: return "ga_IE";
+          }
+        return "ga";
+      case LANG_GALICIAN:
+        switch (sub)
+          {
+          case SUBLANG_GALICIAN_SPAIN: return "gl_ES";
+          }
+        return "gl";
+      case LANG_GEORGIAN:
+        switch (sub)
+          {
+          case SUBLANG_GEORGIAN_GEORGIA: return "ka_GE";
+          }
+        return "ka";
+      case LANG_GERMAN:
+        switch (sub)
+          {
+          case SUBLANG_GERMAN: return "de_DE";
+          case SUBLANG_GERMAN_SWISS: return "de_CH";
+          case SUBLANG_GERMAN_AUSTRIAN: return "de_AT";
+          case SUBLANG_GERMAN_LUXEMBOURG: return "de_LU";
+          case SUBLANG_GERMAN_LIECHTENSTEIN: return "de_LI";
+          }
+        return "de";
+      case LANG_GREEK:
+        switch (sub)
+          {
+          case SUBLANG_GREEK_GREECE: return "el_GR";
+          }
+        return "el";
+      case LANG_GREENLANDIC:
+        switch (sub)
+          {
+          case SUBLANG_GREENLANDIC_GREENLAND: return "kl_GL";
+          }
+        return "kl";
+      case LANG_GUARANI:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "gn_PY";
+          }
+        return "gn";
+      case LANG_GUJARATI:
+        switch (sub)
+          {
+          case SUBLANG_GUJARATI_INDIA: return "gu_IN";
+          }
+        return "gu";
+      case LANG_HAUSA:
+        switch (sub)
+          {
+          case 0x1f: return "ha";
+          case SUBLANG_HAUSA_NIGERIA_LATIN: return "ha_NG";
+          }
+        return "ha";
+      case LANG_HAWAIIAN:
+        /* FIXME: Do they mean Hawaiian ("haw_US", 1000 speakers)
+           or Hawaii Creole English ("cpe_US", 600000 speakers)?  */
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "cpe_US";
+          }
+        return "cpe";
+      case LANG_HEBREW:
+        switch (sub)
+          {
+          case SUBLANG_HEBREW_ISRAEL: return "he_IL";
+          }
+        return "he";
+      case LANG_HINDI:
+        switch (sub)
+          {
+          case SUBLANG_HINDI_INDIA: return "hi_IN";
+          }
+        return "hi";
+      case LANG_HUNGARIAN:
+        switch (sub)
+          {
+          case SUBLANG_HUNGARIAN_HUNGARY: return "hu_HU";
+          }
+        return "hu";
+      case LANG_IBIBIO:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "nic_NG";
+          }
+        return "nic";
+      case LANG_ICELANDIC:
+        switch (sub)
+          {
+          case SUBLANG_ICELANDIC_ICELAND: return "is_IS";
+          }
+        return "is";
+      case LANG_IGBO:
+        switch (sub)
+          {
+          case SUBLANG_IGBO_NIGERIA: return "ig_NG";
+          }
+        return "ig";
+      case LANG_INDONESIAN:
+        switch (sub)
+          {
+          case SUBLANG_INDONESIAN_INDONESIA: return "id_ID";
+          }
+        return "id";
+      case LANG_INUKTITUT:
+        switch (sub)
+          {
+          case 0x1e: return "iu"; /* syllabic */
+          case SUBLANG_INUKTITUT_CANADA: return "iu_CA"; /* syllabic */
+          case 0x1f: return "iu@latin";
+          case SUBLANG_INUKTITUT_CANADA_LATIN: return "iu_CA@latin";
+          }
+        return "iu";
+      case LANG_ITALIAN:
+        switch (sub)
+          {
+          case SUBLANG_ITALIAN: return "it_IT";
+          case SUBLANG_ITALIAN_SWISS: return "it_CH";
+          }
+        return "it";
+      case LANG_JAPANESE:
+        switch (sub)
+          {
+          case SUBLANG_JAPANESE_JAPAN: return "ja_JP";
+          }
+        return "ja";
+      case LANG_KANNADA:
+        switch (sub)
+          {
+          case SUBLANG_KANNADA_INDIA: return "kn_IN";
+          }
+        return "kn";
+      case LANG_KANURI:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "kr_NG";
+          }
+        return "kr";
+      case LANG_KASHMIRI:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "ks_PK";
+          case SUBLANG_KASHMIRI_INDIA: return "ks_IN";
+          }
+        return "ks";
+      case LANG_KAZAK:
+        switch (sub)
+          {
+          case SUBLANG_KAZAK_KAZAKHSTAN: return "kk_KZ";
+          }
+        return "kk";
+      case LANG_KICHE:
+        /* FIXME: Adjust this when such locales appear on Unix.  */
+        switch (sub)
+          {
+          case SUBLANG_KICHE_GUATEMALA: return "qut_GT";
+          }
+        return "qut";
+      case LANG_KINYARWANDA:
+        switch (sub)
+          {
+          case SUBLANG_KINYARWANDA_RWANDA: return "rw_RW";
+          }
+        return "rw";
+      case LANG_KONKANI:
+        /* FIXME: Adjust this when such locales appear on Unix.  */
+        switch (sub)
+          {
+          case SUBLANG_KONKANI_INDIA: return "kok_IN";
+          }
+        return "kok";
+      case LANG_KOREAN:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "ko_KR";
+          }
+        return "ko";
+      case LANG_KYRGYZ:
+        switch (sub)
+          {
+          case SUBLANG_KYRGYZ_KYRGYZSTAN: return "ky_KG";
+          }
+        return "ky";
+      case LANG_LAO:
+        switch (sub)
+          {
+          case SUBLANG_LAO_LAOS: return "lo_LA";
+          }
+        return "lo";
+      case LANG_LATIN:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "la_VA";
+          }
+        return "la";
+      case LANG_LATVIAN:
+        switch (sub)
+          {
+          case SUBLANG_LATVIAN_LATVIA: return "lv_LV";
+          }
+        return "lv";
+      case LANG_LITHUANIAN:
+        switch (sub)
+          {
+          case SUBLANG_LITHUANIAN_LITHUANIA: return "lt_LT";
+          }
+        return "lt";
+      case LANG_LUXEMBOURGISH:
+        switch (sub)
+          {
+          case SUBLANG_LUXEMBOURGISH_LUXEMBOURG: return "lb_LU";
+          }
+        return "lb";
+      case LANG_MACEDONIAN:
+        switch (sub)
+          {
+          case SUBLANG_MACEDONIAN_MACEDONIA: return "mk_MK";
+          }
+        return "mk";
+      case LANG_MALAY:
+        switch (sub)
+          {
+          case SUBLANG_MALAY_MALAYSIA: return "ms_MY";
+          case SUBLANG_MALAY_BRUNEI_DARUSSALAM: return "ms_BN";
+          }
+        return "ms";
+      case LANG_MALAYALAM:
+        switch (sub)
+          {
+          case SUBLANG_MALAYALAM_INDIA: return "ml_IN";
+          }
+        return "ml";
+      case LANG_MALTESE:
+        switch (sub)
+          {
+          case SUBLANG_MALTESE_MALTA: return "mt_MT";
+          }
+        return "mt";
+      case LANG_MANIPURI:
+        /* FIXME: Adjust this when such locales appear on Unix.  */
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "mni_IN";
+          }
+        return "mni";
+      case LANG_MAORI:
+        switch (sub)
+          {
+          case SUBLANG_MAORI_NEW_ZEALAND: return "mi_NZ";
+          }
+        return "mi";
+      case LANG_MAPUDUNGUN:
+        switch (sub)
+          {
+          case SUBLANG_MAPUDUNGUN_CHILE: return "arn_CL";
+          }
+        return "arn";
+      case LANG_MARATHI:
+        switch (sub)
+          {
+          case SUBLANG_MARATHI_INDIA: return "mr_IN";
+          }
+        return "mr";
+      case LANG_MOHAWK:
+        switch (sub)
+          {
+          case SUBLANG_MOHAWK_CANADA: return "moh_CA";
+          }
+        return "moh";
+      case LANG_MONGOLIAN:
+        switch (sub)
+          {
+          case SUBLANG_MONGOLIAN_CYRILLIC_MONGOLIA: case 0x1e: return "mn_MN";
+          case SUBLANG_MONGOLIAN_PRC: case 0x1f: return "mn_CN";
+          }
+        return "mn"; /* Ambiguous: could be "mn_CN" or "mn_MN".  */
+      case LANG_NEPALI:
+        switch (sub)
+          {
+          case SUBLANG_NEPALI_NEPAL: return "ne_NP";
+          case SUBLANG_NEPALI_INDIA: return "ne_IN";
+          }
+        return "ne";
+      case LANG_NORWEGIAN:
+        switch (sub)
+          {
+          case 0x1f: return "nb";
+          case SUBLANG_NORWEGIAN_BOKMAL: return "nb_NO";
+          case 0x1e: return "nn";
+          case SUBLANG_NORWEGIAN_NYNORSK: return "nn_NO";
+          }
+        return "no";
+      case LANG_OCCITAN:
+        switch (sub)
+          {
+          case SUBLANG_OCCITAN_FRANCE: return "oc_FR";
+          }
+        return "oc";
+      case LANG_ORIYA:
+        switch (sub)
+          {
+          case SUBLANG_ORIYA_INDIA: return "or_IN";
+          }
+        return "or";
+      case LANG_OROMO:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "om_ET";
+          }
+        return "om";
+      case LANG_PAPIAMENTU:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "pap_AN";
+          }
+        return "pap";
+      case LANG_PASHTO:
+        switch (sub)
+          {
+          case SUBLANG_PASHTO_AFGHANISTAN: return "ps_AF";
+          }
+        return "ps"; /* Ambiguous: could be "ps_PK" or "ps_AF".  */
+      case LANG_POLISH:
+        switch (sub)
+          {
+          case SUBLANG_POLISH_POLAND: return "pl_PL";
+          }
+        return "pl";
+      case LANG_PORTUGUESE:
+        switch (sub)
+          {
+          /* Hmm. SUBLANG_PORTUGUESE_BRAZILIAN == SUBLANG_DEFAULT.
+             Same phenomenon as SUBLANG_ENGLISH_US == SUBLANG_DEFAULT. */
+          case SUBLANG_PORTUGUESE_BRAZILIAN: return "pt_BR";
+          case SUBLANG_PORTUGUESE: return "pt_PT";
+          }
+        return "pt";
+      case LANG_PUNJABI:
+        switch (sub)
+          {
+          case SUBLANG_PUNJABI_INDIA: return "pa_IN"; /* Gurmukhi script */
+          case SUBLANG_PUNJABI_PAKISTAN: return "pa_PK"; /* Arabic script */
+          }
+        return "pa";
+      case LANG_QUECHUA:
+        /* Note: Microsoft uses the non-ISO language code "quz".  */
+        switch (sub)
+          {
+          case SUBLANG_QUECHUA_BOLIVIA: return "qu_BO";
+          case SUBLANG_QUECHUA_ECUADOR: return "qu_EC";
+          case SUBLANG_QUECHUA_PERU: return "qu_PE";
+          }
+        return "qu";
+      case LANG_ROMANIAN:
+        switch (sub)
+          {
+          case SUBLANG_ROMANIAN_ROMANIA: return "ro_RO";
+          case SUBLANG_ROMANIAN_MOLDOVA: return "ro_MD";
+          }
+        return "ro";
+      case LANG_ROMANSH:
+        switch (sub)
+          {
+          case SUBLANG_ROMANSH_SWITZERLAND: return "rm_CH";
+          }
+        return "rm";
+      case LANG_RUSSIAN:
+        switch (sub)
+          {
+          case SUBLANG_RUSSIAN_RUSSIA: return "ru_RU";
+          case SUBLANG_RUSSIAN_MOLDAVIA: return "ru_MD";
+          }
+        return "ru"; /* Ambiguous: could be "ru_RU" or "ru_UA" or "ru_MD".  */
+      case LANG_SAMI:
+        switch (sub)
+          {
+          /* Northern Sami */
+          case 0x00: return "se";
+          case SUBLANG_SAMI_NORTHERN_NORWAY: return "se_NO";
+          case SUBLANG_SAMI_NORTHERN_SWEDEN: return "se_SE";
+          case SUBLANG_SAMI_NORTHERN_FINLAND: return "se_FI";
+          /* Lule Sami */
+          case 0x1f: return "smj";
+          case SUBLANG_SAMI_LULE_NORWAY: return "smj_NO";
+          case SUBLANG_SAMI_LULE_SWEDEN: return "smj_SE";
+          /* Southern Sami */
+          case 0x1e: return "sma";
+          case SUBLANG_SAMI_SOUTHERN_NORWAY: return "sma_NO";
+          case SUBLANG_SAMI_SOUTHERN_SWEDEN: return "sma_SE";
+          /* Skolt Sami */
+          case 0x1d: return "sms";
+          case SUBLANG_SAMI_SKOLT_FINLAND: return "sms_FI";
+          /* Inari Sami */
+          case 0x1c: return "smn";
+          case SUBLANG_SAMI_INARI_FINLAND: return "smn_FI";
+          }
+        return "se"; /* or "smi"? */
+      case LANG_SANSKRIT:
+        switch (sub)
+          {
+          case SUBLANG_SANSKRIT_INDIA: return "sa_IN";
+          }
+        return "sa";
+      case LANG_SCOTTISH_GAELIC:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "gd_GB";
+          }
+        return "gd";
+      case LANG_SINDHI:
+        switch (sub)
+          {
+          case SUBLANG_SINDHI_INDIA: return "sd_IN";
+          case SUBLANG_SINDHI_PAKISTAN: return "sd_PK";
+          /*case SUBLANG_SINDHI_AFGHANISTAN: return "sd_AF";*/
+          }
+        return "sd";
+      case LANG_SINHALESE:
+        switch (sub)
+          {
+          case SUBLANG_SINHALESE_SRI_LANKA: return "si_LK";
+          }
+        return "si";
+      case LANG_SLOVAK:
+        switch (sub)
+          {
+          case SUBLANG_SLOVAK_SLOVAKIA: return "sk_SK";
+          }
+        return "sk";
+      case LANG_SLOVENIAN:
+        switch (sub)
+          {
+          case SUBLANG_SLOVENIAN_SLOVENIA: return "sl_SI";
+          }
+        return "sl";
+      case LANG_SOMALI:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "so_SO";
+          }
+        return "so";
+      case LANG_SORBIAN:
+        /* FIXME: Adjust this when such locales appear on Unix.  */
+        switch (sub)
+          {
+          /* Upper Sorbian */
+          case 0x00: return "hsb";
+          case SUBLANG_UPPER_SORBIAN_GERMANY: return "hsb_DE";
+          /* Lower Sorbian */
+          case 0x1f: return "dsb";
+          case SUBLANG_LOWER_SORBIAN_GERMANY: return "dsb_DE";
+          }
+        return "wen";
+      case LANG_SOTHO:
+        /* <https://docs.microsoft.com/en-us/windows/desktop/Intl/language-identifier-constants-and-strings>
+           calls it "Sesotho sa Leboa"; according to
+           <https://www.ethnologue.com/show_language.asp?code=nso>
+           <https://www.ethnologue.com/show_language.asp?code=sot>
+           it's the same as Northern Sotho.  */
+        switch (sub)
+          {
+          case SUBLANG_SOTHO_SOUTH_AFRICA: return "nso_ZA";
+          }
+        return "nso";
+      case LANG_SPANISH:
+        switch (sub)
+          {
+          case SUBLANG_SPANISH: return "es_ES";
+          case SUBLANG_SPANISH_MEXICAN: return "es_MX";
+          case SUBLANG_SPANISH_MODERN:
+            return "es_ES@modern";      /* not seen on Unix */
+          case SUBLANG_SPANISH_GUATEMALA: return "es_GT";
+          case SUBLANG_SPANISH_COSTA_RICA: return "es_CR";
+          case SUBLANG_SPANISH_PANAMA: return "es_PA";
+          case SUBLANG_SPANISH_DOMINICAN_REPUBLIC: return "es_DO";
+          case SUBLANG_SPANISH_VENEZUELA: return "es_VE";
+          case SUBLANG_SPANISH_COLOMBIA: return "es_CO";
+          case SUBLANG_SPANISH_PERU: return "es_PE";
+          case SUBLANG_SPANISH_ARGENTINA: return "es_AR";
+          case SUBLANG_SPANISH_ECUADOR: return "es_EC";
+          case SUBLANG_SPANISH_CHILE: return "es_CL";
+          case SUBLANG_SPANISH_URUGUAY: return "es_UY";
+          case SUBLANG_SPANISH_PARAGUAY: return "es_PY";
+          case SUBLANG_SPANISH_BOLIVIA: return "es_BO";
+          case SUBLANG_SPANISH_EL_SALVADOR: return "es_SV";
+          case SUBLANG_SPANISH_HONDURAS: return "es_HN";
+          case SUBLANG_SPANISH_NICARAGUA: return "es_NI";
+          case SUBLANG_SPANISH_PUERTO_RICO: return "es_PR";
+          case SUBLANG_SPANISH_US: return "es_US";
+          }
+        return "es";
+      case LANG_SUTU:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "bnt_TZ"; /* or "st_LS" or "nso_ZA"? */
+          }
+        return "bnt";
+      case LANG_SWAHILI:
+        switch (sub)
+          {
+          case SUBLANG_SWAHILI_KENYA: return "sw_KE";
+          }
+        return "sw";
+      case LANG_SWEDISH:
+        switch (sub)
+          {
+          case SUBLANG_SWEDISH_SWEDEN: return "sv_SE";
+          case SUBLANG_SWEDISH_FINLAND: return "sv_FI";
+          }
+        return "sv";
+      case LANG_SYRIAC:
+        switch (sub)
+          {
+          case SUBLANG_SYRIAC_SYRIA: return "syr_SY"; /* An extinct language.  */
+          }
+        return "syr";
+      case LANG_TAGALOG:
+        switch (sub)
+          {
+          case SUBLANG_TAGALOG_PHILIPPINES: return "tl_PH"; /* or "fil_PH"? */
+          }
+        return "tl"; /* or "fil"? */
+      case LANG_TAJIK:
+        switch (sub)
+          {
+          case 0x1f: return "tg";
+          case SUBLANG_TAJIK_TAJIKISTAN: return "tg_TJ";
+          }
+        return "tg";
+      case LANG_TAMAZIGHT:
+        /* Note: Microsoft uses the non-ISO language code "tmz".  */
+        switch (sub)
+          {
+          /* FIXME: Adjust this when Tamazight locales appear on Unix.  */
+          case SUBLANG_TAMAZIGHT_ARABIC: return "ber_MA@arabic";
+          case 0x1f: return "ber@latin";
+          case SUBLANG_TAMAZIGHT_ALGERIA_LATIN: return "ber_DZ@latin";
+          }
+        return "ber";
+      case LANG_TAMIL:
+        switch (sub)
+          {
+          case SUBLANG_TAMIL_INDIA: return "ta_IN";
+          }
+        return "ta"; /* Ambiguous: could be "ta_IN" or "ta_LK" or "ta_SG".  */
+      case LANG_TATAR:
+        switch (sub)
+          {
+          case SUBLANG_TATAR_RUSSIA: return "tt_RU";
+          }
+        return "tt";
+      case LANG_TELUGU:
+        switch (sub)
+          {
+          case SUBLANG_TELUGU_INDIA: return "te_IN";
+          }
+        return "te";
+      case LANG_THAI:
+        switch (sub)
+          {
+          case SUBLANG_THAI_THAILAND: return "th_TH";
+          }
+        return "th";
+      case LANG_TIBETAN:
+        switch (sub)
+          {
+          case SUBLANG_TIBETAN_PRC:
+            /* Most Tibetans would not like "bo_CN".  But Tibet does not yet
+               have a country code of its own.  */
+            return "bo";
+          case SUBLANG_TIBETAN_BHUTAN: return "bo_BT";
+          }
+        return "bo";
+      case LANG_TIGRINYA:
+        switch (sub)
+          {
+          case SUBLANG_TIGRINYA_ETHIOPIA: return "ti_ET";
+          case SUBLANG_TIGRINYA_ERITREA: return "ti_ER";
+          }
+        return "ti";
+      case LANG_TSONGA:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "ts_ZA";
+          }
+        return "ts";
+      case LANG_TSWANA:
+        /* Spoken in South Africa, Botswana.  */
+        switch (sub)
+          {
+          case SUBLANG_TSWANA_SOUTH_AFRICA: return "tn_ZA";
+          }
+        return "tn";
+      case LANG_TURKISH:
+        switch (sub)
+          {
+          case SUBLANG_TURKISH_TURKEY: return "tr_TR";
+          }
+        return "tr";
+      case LANG_TURKMEN:
+        switch (sub)
+          {
+          case SUBLANG_TURKMEN_TURKMENISTAN: return "tk_TM";
+          }
+        return "tk";
+      case LANG_UIGHUR:
+        switch (sub)
+          {
+          case SUBLANG_UIGHUR_PRC: return "ug_CN";
+          }
+        return "ug";
+      case LANG_UKRAINIAN:
+        switch (sub)
+          {
+          case SUBLANG_UKRAINIAN_UKRAINE: return "uk_UA";
+          }
+        return "uk";
+      case LANG_URDU:
+        switch (sub)
+          {
+          case SUBLANG_URDU_PAKISTAN: return "ur_PK";
+          case SUBLANG_URDU_INDIA: return "ur_IN";
+          }
+        return "ur";
+      case LANG_UZBEK:
+        switch (sub)
+          {
+          case 0x1f: return "uz";
+          case SUBLANG_UZBEK_LATIN: return "uz_UZ";
+          case 0x1e: return "uz@cyrillic";
+          case SUBLANG_UZBEK_CYRILLIC: return "uz_UZ@cyrillic";
+          }
+        return "uz";
+      case LANG_VENDA:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "ve_ZA";
+          }
+        return "ve";
+      case LANG_VIETNAMESE:
+        switch (sub)
+          {
+          case SUBLANG_VIETNAMESE_VIETNAM: return "vi_VN";
+          }
+        return "vi";
+      case LANG_WELSH:
+        switch (sub)
+          {
+          case SUBLANG_WELSH_UNITED_KINGDOM: return "cy_GB";
+          }
+        return "cy";
+      case LANG_WOLOF:
+        switch (sub)
+          {
+          case SUBLANG_WOLOF_SENEGAL: return "wo_SN";
+          }
+        return "wo";
+      case LANG_XHOSA:
+        switch (sub)
+          {
+          case SUBLANG_XHOSA_SOUTH_AFRICA: return "xh_ZA";
+          }
+        return "xh";
+      case LANG_YAKUT:
+        switch (sub)
+          {
+          case SUBLANG_YAKUT_RUSSIA: return "sah_RU";
+          }
+        return "sah";
+      case LANG_YI:
+        switch (sub)
+          {
+          case SUBLANG_YI_PRC: return "ii_CN";
+          }
+        return "ii";
+      case LANG_YIDDISH:
+        switch (sub)
+          {
+          case SUBLANG_DEFAULT: return "yi_IL";
+          }
+        return "yi";
+      case LANG_YORUBA:
+        switch (sub)
+          {
+          case SUBLANG_YORUBA_NIGERIA: return "yo_NG";
+          }
+        return "yo";
+      case LANG_ZULU:
+        switch (sub)
+          {
+          case SUBLANG_ZULU_SOUTH_AFRICA: return "zu_ZA";
+          }
+        return "zu";
+      default: return "C";
+      }
+  }
+}
+
+# if !defined IN_LIBINTL
+static
+# endif
+const char *
+gl_locale_name_from_win32_LCID (LCID lcid)
+{
+  LANGID langid;
+
+  /* Strip off the sorting rules, keep only the language part.  */
+  langid = LANGIDFROMLCID (lcid);
+
+  return gl_locale_name_from_win32_LANGID (langid);
+}
+
+# ifdef WINDOWS_NATIVE
+
+/* Two variables to interface between get_lcid and the EnumLocales
+   callback function below.  */
+static LCID found_lcid;
+static char lname[LC_MAX * (LOCALE_NAME_MAX_LENGTH + 1) + 1];
+
+/* Callback function for EnumLocales.  */
+static BOOL CALLBACK
+enum_locales_fn (LPSTR locale_num_str)
+{
+  char *endp;
+  char locval[2 * LOCALE_NAME_MAX_LENGTH + 1 + 1];
+  LCID try_lcid = strtoul (locale_num_str, &endp, 16);
+
+  if (GetLocaleInfo (try_lcid, LOCALE_SENGLANGUAGE,
+                    locval, LOCALE_NAME_MAX_LENGTH))
+    {
+      strcat (locval, "_");
+      if (GetLocaleInfo (try_lcid, LOCALE_SENGCOUNTRY,
+                        locval + strlen (locval), LOCALE_NAME_MAX_LENGTH))
+       {
+         size_t locval_len = strlen (locval);
+
+         if (strncmp (locval, lname, locval_len) == 0
+             && (lname[locval_len] == '.'
+                 || lname[locval_len] == '\0'))
+           {
+             found_lcid = try_lcid;
+             return FALSE;
+           }
+       }
+    }
+  return TRUE;
+}
+
+/* This lock protects the get_lcid against multiple simultaneous calls.  */
+gl_lock_define_initialized(static, get_lcid_lock)
+
+/* Return the Locale ID (LCID) number given the locale's name, a
+   string, in LOCALE_NAME.  This works by enumerating all the locales
+   supported by the system, until we find one whose name matches
+   LOCALE_NAME.  */
+static LCID
+get_lcid (const char *locale_name)
+{
+  /* A simple cache.  */
+  static LCID last_lcid;
+  static char last_locale[1000];
+
+  /* Lock while looking for an LCID, to protect access to static
+     variables: last_lcid, last_locale, found_lcid, and lname.  */
+  gl_lock_lock (get_lcid_lock);
+  if (last_lcid > 0 && strcmp (locale_name, last_locale) == 0)
+    {
+      gl_lock_unlock (get_lcid_lock);
+      return last_lcid;
+    }
+  strncpy (lname, locale_name, sizeof (lname) - 1);
+  lname[sizeof (lname) - 1] = '\0';
+  found_lcid = 0;
+  EnumSystemLocales (enum_locales_fn, LCID_SUPPORTED);
+  if (found_lcid > 0)
+    {
+      last_lcid = found_lcid;
+      strcpy (last_locale, locale_name);
+    }
+  gl_lock_unlock (get_lcid_lock);
+  return found_lcid;
+}
+
+# endif
+#endif
+
+
+#if HAVE_GOOD_USELOCALE /* glibc, Mac OS X, FreeBSD >= 9.1, Cygwin >= 2.6,
+                           Solaris 11 OpenIndiana, or Solaris >= 11.4  */
+
+/* Simple hash set of strings.  We don't want to drag in lots of hash table
+   code here.  */
+
+# define SIZE_BITS (sizeof (size_t) * CHAR_BIT)
+
+/* A hash function for NUL-terminated char* strings using
+   the method described by Bruno Haible.
+   See https://www.haible.de/bruno/hashfunc.html.  */
+static size_t _GL_ATTRIBUTE_PURE
+string_hash (const void *x)
+{
+  const char *s = (const char *) x;
+  size_t h = 0;
+
+  for (; *s; s++)
+    h = *s + ((h << 9) | (h >> (SIZE_BITS - 9)));
+
+  return h;
+}
+
+/* A hash table of fixed size.  Multiple threads can access it read-only
+   simultaneously, but only one thread can insert into it at the same time.  */
+
+/* A node in a hash bucket collision list.  */
+struct struniq_hash_node
+  {
+    struct struniq_hash_node * volatile next;
+    char contents[FLEXIBLE_ARRAY_MEMBER];
+  };
+
+# define STRUNIQ_HASH_TABLE_SIZE 257
+static struct struniq_hash_node * volatile struniq_hash_table[STRUNIQ_HASH_TABLE_SIZE]
+  /* = { NULL, ..., NULL } */;
+
+/* This lock protects the struniq_hash_table against multiple simultaneous
+   insertions.  */
+gl_lock_define_initialized(static, struniq_lock)
+
+/* Store a copy of the given string in a string pool with indefinite extent.
+   Return a pointer to this copy.  */
+static const char *
+struniq (const char *string)
+{
+  size_t hashcode = string_hash (string);
+  size_t slot = hashcode % STRUNIQ_HASH_TABLE_SIZE;
+  size_t size;
+  struct struniq_hash_node *new_node;
+  struct struniq_hash_node *p;
+  for (p = struniq_hash_table[slot]; p != NULL; p = p->next)
+    if (strcmp (p->contents, string) == 0)
+      return p->contents;
+  size = strlen (string) + 1;
+  new_node =
+    (struct struniq_hash_node *)
+    malloc (FLEXSIZEOF (struct struniq_hash_node, contents, size));
+  if (new_node == NULL)
+    /* Out of memory.  Return a statically allocated string.  */
+    return "C";
+  memcpy (new_node->contents, string, size);
+  {
+    bool mt = gl_multithreaded ();
+    /* Lock while inserting new_node.  */
+    if (mt) gl_lock_lock (struniq_lock);
+    /* Check whether another thread already added the string while we were
+       waiting on the lock.  */
+    for (p = struniq_hash_table[slot]; p != NULL; p = p->next)
+      if (strcmp (p->contents, string) == 0)
+        {
+          free (new_node);
+          new_node = p;
+          goto done;
+        }
+    /* Really insert new_node into the hash table.  Fill new_node entirely
+       first, because other threads may be iterating over the linked list.  */
+    new_node->next = struniq_hash_table[slot];
+    struniq_hash_table[slot] = new_node;
+   done:
+    /* Unlock after new_node is inserted.  */
+    if (mt) gl_lock_unlock (struniq_lock);
+  }
+  return new_node->contents;
+}
+
+#endif
+
+
+#if LOCALENAME_ENHANCE_LOCALE_FUNCS
+
+/* The 'locale_t' object does not contain the names of the locale categories.
+   We have to associate them with the object through a hash table.
+   The hash table is defined in localename-table.[hc].  */
+
+/* Returns the name of a given locale category in a given locale_t object,
+   allocated as a string with indefinite extent.  */
+static const char *
+get_locale_t_name (int category, locale_t locale)
+{
+  if (locale == LC_GLOBAL_LOCALE)
+    {
+      /* Query the global locale.  */
+      const char *name = setlocale_null (category);
+      if (name != NULL)
+        return struniq (name);
+      else
+        /* Should normally not happen.  */
+        return "";
+    }
+  else
+    {
+      /* Look up the names in the hash table.  */
+      size_t hashcode = locale_hash_function (locale);
+      size_t slot = hashcode % LOCALE_HASH_TABLE_SIZE;
+      /* If the locale was not found in the table, return "".  This can
+         happen if the application uses the original newlocale()/duplocale()
+         functions instead of the overridden ones.  */
+      const char *name = "";
+      struct locale_hash_node *p;
+      /* Lock while looking up the hash node.  */
+      gl_rwlock_rdlock (locale_lock);
+      for (p = locale_hash_table[slot]; p != NULL; p = p->next)
+        if (p->locale == locale)
+          {
+            name = p->names.category_name[category];
+            break;
+          }
+      gl_rwlock_unlock (locale_lock);
+      return name;
+    }
+}
+
+# if !(defined newlocale && defined duplocale && defined freelocale)
+#  error "newlocale, duplocale, freelocale not being replaced as expected!"
+# endif
+
+/* newlocale() override.  */
+locale_t
+newlocale (int category_mask, const char *name, locale_t base)
+#undef newlocale
+{
+  struct locale_categories_names names;
+  struct locale_hash_node *node;
+  locale_t result;
+
+  /* Make sure name has indefinite extent.  */
+  if (((LC_CTYPE_MASK | LC_NUMERIC_MASK | LC_TIME_MASK | LC_COLLATE_MASK
+        | LC_MONETARY_MASK | LC_MESSAGES_MASK)
+       & category_mask) != 0)
+    name = struniq (name);
+
+  /* Determine the category names of the result.  */
+  if (((LC_CTYPE_MASK | LC_NUMERIC_MASK | LC_TIME_MASK | LC_COLLATE_MASK
+        | LC_MONETARY_MASK | LC_MESSAGES_MASK)
+       & ~category_mask) == 0)
+    {
+      /* Use name, ignore base.  */
+      int category;
+
+      name = struniq (name);
+      for (category = 0; category < 6; category++)
+        names.category_name[category] = name;
+    }
+  else
+    {
+      /* Use base, possibly also name.  */
+      if (base == NULL)
+        {
+          int category;
+
+          for (category = 0; category < 6; category++)
+            {
+              int mask;
+
+              switch (category)
+                {
+                case LC_CTYPE:
+                  mask = LC_CTYPE_MASK;
+                  break;
+                case LC_NUMERIC:
+                  mask = LC_NUMERIC_MASK;
+                  break;
+                case LC_TIME:
+                  mask = LC_TIME_MASK;
+                  break;
+                case LC_COLLATE:
+                  mask = LC_COLLATE_MASK;
+                  break;
+                case LC_MONETARY:
+                  mask = LC_MONETARY_MASK;
+                  break;
+                case LC_MESSAGES:
+                  mask = LC_MESSAGES_MASK;
+                  break;
+                default:
+                  abort ();
+                }
+              names.category_name[category] =
+                ((mask & category_mask) != 0 ? name : "C");
+            }
+        }
+      else if (base == LC_GLOBAL_LOCALE)
+        {
+          int category;
+
+          for (category = 0; category < 6; category++)
+            {
+              int mask;
+
+              switch (category)
+                {
+                case LC_CTYPE:
+                  mask = LC_CTYPE_MASK;
+                  break;
+                case LC_NUMERIC:
+                  mask = LC_NUMERIC_MASK;
+                  break;
+                case LC_TIME:
+                  mask = LC_TIME_MASK;
+                  break;
+                case LC_COLLATE:
+                  mask = LC_COLLATE_MASK;
+                  break;
+                case LC_MONETARY:
+                  mask = LC_MONETARY_MASK;
+                  break;
+                case LC_MESSAGES:
+                  mask = LC_MESSAGES_MASK;
+                  break;
+                default:
+                  abort ();
+                }
+              names.category_name[category] =
+                ((mask & category_mask) != 0
+                 ? name
+                 : get_locale_t_name (category, LC_GLOBAL_LOCALE));
+            }
+        }
+      else
+        {
+          /* Look up the names of base in the hash table.  Like multiple calls
+             of get_locale_t_name, but locking only once.  */
+          struct locale_hash_node *p;
+          int category;
+
+          /* Lock while looking up the hash node.  */
+          gl_rwlock_rdlock (locale_lock);
+          for (p = locale_hash_table[locale_hash_function (base) % LOCALE_HASH_TABLE_SIZE];
+               p != NULL;
+               p = p->next)
+            if (p->locale == base)
+              break;
+
+          for (category = 0; category < 6; category++)
+            {
+              int mask;
+
+              switch (category)
+                {
+                case LC_CTYPE:
+                  mask = LC_CTYPE_MASK;
+                  break;
+                case LC_NUMERIC:
+                  mask = LC_NUMERIC_MASK;
+                  break;
+                case LC_TIME:
+                  mask = LC_TIME_MASK;
+                  break;
+                case LC_COLLATE:
+                  mask = LC_COLLATE_MASK;
+                  break;
+                case LC_MONETARY:
+                  mask = LC_MONETARY_MASK;
+                  break;
+                case LC_MESSAGES:
+                  mask = LC_MESSAGES_MASK;
+                  break;
+                default:
+                  abort ();
+                }
+              names.category_name[category] =
+                ((mask & category_mask) != 0
+                 ? name
+                 : (p != NULL ? p->names.category_name[category] : ""));
+            }
+
+          gl_rwlock_unlock (locale_lock);
+        }
+    }
+
+  node = (struct locale_hash_node *) malloc (sizeof (struct locale_hash_node));
+  if (node == NULL)
+    /* errno is set to ENOMEM.  */
+    return NULL;
+
+  result = newlocale (category_mask, name, base);
+  if (result == NULL)
+    {
+      free (node);
+      return NULL;
+    }
+
+  /* Fill the hash node.  */
+  node->locale = result;
+  node->names = names;
+
+  /* Insert it in the hash table.  */
+  {
+    size_t hashcode = locale_hash_function (result);
+    size_t slot = hashcode % LOCALE_HASH_TABLE_SIZE;
+    struct locale_hash_node *p;
+
+    /* Lock while inserting the new node.  */
+    gl_rwlock_wrlock (locale_lock);
+    for (p = locale_hash_table[slot]; p != NULL; p = p->next)
+      if (p->locale == result)
+        {
+          /* This can happen if the application uses the original freelocale()
+             function instead of the overridden one.  */
+          p->names = node->names;
+          break;
+        }
+    if (p == NULL)
+      {
+        node->next = locale_hash_table[slot];
+        locale_hash_table[slot] = node;
+      }
+
+    gl_rwlock_unlock (locale_lock);
+
+    if (p != NULL)
+      free (node);
+  }
+
+  return result;
+}
+
+/* duplocale() override.  */
+locale_t
+duplocale (locale_t locale)
+#undef duplocale
+{
+  struct locale_hash_node *node;
+  locale_t result;
+
+  if (locale == NULL)
+    /* Invalid argument.  */
+    abort ();
+
+  node = (struct locale_hash_node *) malloc (sizeof (struct locale_hash_node));
+  if (node == NULL)
+    /* errno is set to ENOMEM.  */
+    return NULL;
+
+  result = duplocale (locale);
+  if (result == NULL)
+    {
+      free (node);
+      return NULL;
+    }
+
+  /* Fill the hash node.  */
+  node->locale = result;
+  if (locale == LC_GLOBAL_LOCALE)
+    {
+      int category;
+
+      for (category = 0; category < 6; category++)
+        node->names.category_name[category] =
+          get_locale_t_name (category, LC_GLOBAL_LOCALE);
+
+      /* Lock before inserting the new node.  */
+      gl_rwlock_wrlock (locale_lock);
+    }
+  else
+    {
+      struct locale_hash_node *p;
+
+      /* Lock once, for the lookup and the insertion.  */
+      gl_rwlock_wrlock (locale_lock);
+
+      for (p = locale_hash_table[locale_hash_function (locale) % LOCALE_HASH_TABLE_SIZE];
+           p != NULL;
+           p = p->next)
+        if (p->locale == locale)
+          break;
+      if (p != NULL)
+        node->names = p->names;
+      else
+        {
+          /* This can happen if the application uses the original
+             newlocale()/duplocale() functions instead of the overridden
+             ones.  */
+          int category;
+
+          for (category = 0; category < 6; category++)
+            node->names.category_name[category] = "";
+        }
+    }
+
+  /* Insert it in the hash table.  */
+  {
+    size_t hashcode = locale_hash_function (result);
+    size_t slot = hashcode % LOCALE_HASH_TABLE_SIZE;
+    struct locale_hash_node *p;
+
+    for (p = locale_hash_table[slot]; p != NULL; p = p->next)
+      if (p->locale == result)
+        {
+          /* This can happen if the application uses the original freelocale()
+             function instead of the overridden one.  */
+          p->names = node->names;
+          break;
+        }
+    if (p == NULL)
+      {
+        node->next = locale_hash_table[slot];
+        locale_hash_table[slot] = node;
+      }
+
+    gl_rwlock_unlock (locale_lock);
+
+    if (p != NULL)
+      free (node);
+  }
+
+  return result;
+}
+
+/* freelocale() override.  */
+void
+freelocale (locale_t locale)
+#undef freelocale
+{
+  if (locale == NULL || locale == LC_GLOBAL_LOCALE)
+    /* Invalid argument.  */
+    abort ();
+
+  {
+    size_t hashcode = locale_hash_function (locale);
+    size_t slot = hashcode % LOCALE_HASH_TABLE_SIZE;
+    struct locale_hash_node *found;
+    struct locale_hash_node **p;
+
+    found = NULL;
+    /* Lock while removing the hash node.  */
+    gl_rwlock_wrlock (locale_lock);
+    for (p = &locale_hash_table[slot]; *p != NULL; p = &(*p)->next)
+      if ((*p)->locale == locale)
+        {
+          found = *p;
+          *p = (*p)->next;
+          break;
+        }
+    gl_rwlock_unlock (locale_lock);
+    free (found);
+  }
+
+  freelocale (locale);
+}
+
+#endif
+
+
+#if defined IN_LIBINTL || HAVE_GOOD_USELOCALE
+
+/* Like gl_locale_name_thread, except that the result is not in storage of
+   indefinite extent.  */
+# if !defined IN_LIBINTL
+static
+# endif
+const char *
+gl_locale_name_thread_unsafe (int category, const char *categoryname _GL_UNUSED)
+{
+# if HAVE_GOOD_USELOCALE
+  {
+    locale_t thread_locale = uselocale (NULL);
+    if (thread_locale != LC_GLOBAL_LOCALE)
+      {
+#  if __GLIBC__ >= 2 && !defined __UCLIBC__
+        /* Work around an incorrect definition of the _NL_LOCALE_NAME macro in
+           glibc < 2.12.
+           See <https://sourceware.org/bugzilla/show_bug.cgi?id=10968>.  */
+        const char *name =
+          nl_langinfo (_NL_ITEM ((category), _NL_ITEM_INDEX (-1)));
+        if (name[0] == '\0')
+          /* Fallback code for glibc < 2.4, which did not implement
+             nl_langinfo (_NL_LOCALE_NAME (category)).  */
+          name = thread_locale->__names[category];
+        return name;
+#  elif defined __linux__ && HAVE_LANGINFO_H && defined NL_LOCALE_NAME
+        /* musl libc */
+        return nl_langinfo_l (NL_LOCALE_NAME (category), thread_locale);
+#  elif (defined __FreeBSD__ || defined __DragonFly__) || (defined __APPLE__ && defined __MACH__)
+        /* FreeBSD, Mac OS X */
+        int mask;
+
+        switch (category)
+          {
+          case LC_CTYPE:
+            mask = LC_CTYPE_MASK;
+            break;
+          case LC_NUMERIC:
+            mask = LC_NUMERIC_MASK;
+            break;
+          case LC_TIME:
+            mask = LC_TIME_MASK;
+            break;
+          case LC_COLLATE:
+            mask = LC_COLLATE_MASK;
+            break;
+          case LC_MONETARY:
+            mask = LC_MONETARY_MASK;
+            break;
+          case LC_MESSAGES:
+            mask = LC_MESSAGES_MASK;
+            break;
+          default: /* We shouldn't get here.  */
+            return "";
+          }
+        return querylocale (mask, thread_locale);
+#  elif defined __sun
+#   if HAVE_GETLOCALENAME_L
+        /* Solaris >= 12.  */
+        return getlocalename_l (category, thread_locale);
+#   elif HAVE_SOLARIS114_LOCALES
+        /* Solaris >= 11.4.  */
+        void *lcp = (*thread_locale)->core.data->lcp;
+        if (lcp != NULL)
+          switch (category)
+            {
+            case LC_CTYPE:
+            case LC_NUMERIC:
+            case LC_TIME:
+            case LC_COLLATE:
+            case LC_MONETARY:
+            case LC_MESSAGES:
+              return ((const char * const *) lcp)[category];
+            default: /* We shouldn't get here.  */
+              return "";
+            }
+#   elif HAVE_NAMELESS_LOCALES
+        return get_locale_t_name (category, thread_locale);
+#   else
+        /* Solaris 11 OpenIndiana.
+           For the internal structure of locale objects, see
+           https://github.com/OpenIndiana/illumos-gate/blob/master/usr/src/lib/libc/port/locale/localeimpl.h  */
+        switch (category)
+          {
+          case LC_CTYPE:
+          case LC_NUMERIC:
+          case LC_TIME:
+          case LC_COLLATE:
+          case LC_MONETARY:
+          case LC_MESSAGES:
+            return ((const char * const *) thread_locale)[category];
+          default: /* We shouldn't get here.  */
+            return "";
+          }
+#   endif
+#  elif defined _AIX && HAVE_NAMELESS_LOCALES
+        return get_locale_t_name (category, thread_locale);
+#  elif defined __CYGWIN__
+        /* Cygwin < 2.6 lacks uselocale and thread-local locales altogether.
+           Cygwin <= 2.6.1 lacks NL_LOCALE_NAME, requiring peeking inside
+           an opaque struct.  */
+#   ifdef NL_LOCALE_NAME
+        return nl_langinfo_l (NL_LOCALE_NAME (category), thread_locale);
+#   else
+        /* FIXME: Remove when we can assume new-enough Cygwin.  */
+        struct __locale_t {
+          char categories[7][32];
+        };
+        return ((struct __locale_t *) thread_locale)->categories[category];
+#   endif
+#  elif defined __ANDROID__
+        return MB_CUR_MAX == 4 ? "C.UTF-8" : "C";
+#  endif
+      }
+  }
+# endif
+  return NULL;
+}
+
+#endif
+
+const char *
+gl_locale_name_thread (int category, const char *categoryname _GL_UNUSED)
+{
+#if HAVE_GOOD_USELOCALE
+  const char *name = gl_locale_name_thread_unsafe (category, categoryname);
+  if (name != NULL)
+    return struniq (name);
+#endif
+  /* On WINDOWS_NATIVE, don't use GetThreadLocale() here, because when
+     SetThreadLocale has not been called - which is a very frequent case -
+     the value of GetThreadLocale() ignores past calls to 'setlocale'.  */
+  return NULL;
+}
+
+/* XPG3 defines the result of 'setlocale (category, NULL)' as:
+   "Directs 'setlocale()' to query 'category' and return the current
+    setting of 'local'."
+   However it does not specify the exact format.  Neither do SUSV2 and
+   ISO C 99.  So we can use this feature only on selected systems (e.g.
+   those using GNU C Library).  */
+#if defined _LIBC || ((defined __GLIBC__ && __GLIBC__ >= 2) && !defined __UCLIBC__)
+# define HAVE_LOCALE_NULL
+#endif
+
+const char *
+gl_locale_name_posix (int category, const char *categoryname _GL_UNUSED)
+{
+#if defined WINDOWS_NATIVE
+  if (LC_MIN <= category && category <= LC_MAX)
+    {
+      const char *locname =
+        /* setlocale_null (category) is identical to setlocale (category, NULL)
+           on this platform.  */
+        setlocale (category, NULL);
+
+      /* Convert locale name to LCID.  We don't want to use
+         LocaleNameToLCID because (a) it is only available since Vista,
+         and (b) it doesn't accept locale names returned by 'setlocale'.  */
+      LCID lcid = get_lcid (locname);
+
+      if (lcid > 0)
+        return gl_locale_name_from_win32_LCID (lcid);
+    }
+#endif
+  {
+    const char *locname;
+
+    /* Use the POSIX methods of looking to 'LC_ALL', 'LC_xxx', and 'LANG'.
+       On some systems this can be done by the 'setlocale' function itself.  */
+#if defined HAVE_LC_MESSAGES && defined HAVE_LOCALE_NULL
+    locname = setlocale_null (category);
+#else
+    /* On other systems we ignore what setlocale reports and instead look at the
+       environment variables directly.  This is necessary
+         1. on systems which have a facility for customizing the default locale
+            (Mac OS X, native Windows, Cygwin) and where the system's setlocale()
+            function ignores this default locale (Mac OS X, Cygwin), in two cases:
+            a. when the user missed to use the setlocale() override from libintl
+               (for example by not including <libintl.h>),
+            b. when setlocale supports only the "C" locale, such as on Cygwin
+               1.5.x.  In this case even the override from libintl cannot help.
+         2. on all systems where setlocale supports only the "C" locale.  */
+    /* Strictly speaking, it is a POSIX violation to look at the environment
+       variables regardless whether setlocale has been called or not.  POSIX
+       says:
+           "For C-language programs, the POSIX locale shall be the
+            default locale when the setlocale() function is not called."
+       But we assume that all programs that use internationalized APIs call
+       setlocale (LC_ALL, "").  */
+    locname = gl_locale_name_environ (category, categoryname);
+#endif
+    /* Convert the locale name from the format returned by setlocale() or found
+       in the environment variables to the XPG syntax.  */
+#if defined WINDOWS_NATIVE
+    if (locname != NULL)
+      {
+        /* Convert locale name to LCID.  We don't want to use
+           LocaleNameToLCID because (a) it is only available since Vista,
+           and (b) it doesn't accept locale names returned by 'setlocale'.  */
+        LCID lcid = get_lcid (locname);
+
+        if (lcid > 0)
+          return gl_locale_name_from_win32_LCID (lcid);
+      }
+#endif
+    return locname;
+  }
+}
+
+const char *
+gl_locale_name_environ (int category _GL_UNUSED, const char *categoryname)
+{
+  const char *retval;
+
+  /* Setting of LC_ALL overrides all other.  */
+  retval = getenv ("LC_ALL");
+  if (retval != NULL && retval[0] != '\0')
+    return retval;
+  /* Next comes the name of the desired category.  */
+  retval = getenv (categoryname);
+  if (retval != NULL && retval[0] != '\0')
+    return retval;
+  /* Last possibility is the LANG environment variable.  */
+  retval = getenv ("LANG");
+  if (retval != NULL && retval[0] != '\0')
+    {
+#if HAVE_CFPREFERENCESCOPYAPPVALUE
+      /* Mac OS X 10.2 or newer.
+         Ignore invalid LANG value set by the Terminal application.  */
+      if (strcmp (retval, "UTF-8") != 0)
+#endif
+#if defined __CYGWIN__
+      /* Cygwin.
+         Ignore dummy LANG value set by ~/.profile.  */
+      if (strcmp (retval, "C.UTF-8") != 0)
+#endif
+        return retval;
+    }
+
+  return NULL;
+}
+
+const char *
+gl_locale_name_default (void)
+{
+  /* POSIX:2001 says:
+     "All implementations shall define a locale as the default locale, to be
+      invoked when no environment variables are set, or set to the empty
+      string.  This default locale can be the POSIX locale or any other
+      implementation-defined locale.  Some implementations may provide
+      facilities for local installation administrators to set the default
+      locale, customizing it for each location.  POSIX:2001 does not require
+      such a facility.
+
+     The systems with such a facility are Mac OS X and Windows: They provide a
+     GUI that allows the user to choose a locale.
+       - On Mac OS X, by default, none of LC_* or LANG are set.  Starting with
+         Mac OS X 10.4 or 10.5, LANG is set for processes launched by the
+         'Terminal' application (but sometimes to an incorrect value "UTF-8").
+         When no environment variable is set, setlocale (LC_ALL, "") uses the
+         "C" locale.
+       - On native Windows, by default, none of LC_* or LANG are set.
+         When no environment variable is set, setlocale (LC_ALL, "") uses the
+         locale chosen by the user.
+       - On Cygwin 1.5.x, by default, none of LC_* or LANG are set.
+         When no environment variable is set, setlocale (LC_ALL, "") uses the
+         "C" locale.
+       - On Cygwin 1.7, by default, LANG is set to "C.UTF-8" when the default
+         ~/.profile is executed.
+         When no environment variable is set, setlocale (LC_ALL, "") uses the
+         "C.UTF-8" locale, which operates in the same way as the "C" locale.
+  */
+
+#if !(HAVE_CFPREFERENCESCOPYAPPVALUE || defined WINDOWS_NATIVE || defined __CYGWIN__)
+
+  /* The system does not have a way of setting the locale, other than the
+     POSIX specified environment variables.  We use C as default locale.  */
+  return "C";
+
+#else
+
+  /* Return an XPG style locale name language[_territory][@modifier].
+     Don't even bother determining the codeset; it's not useful in this
+     context, because message catalogs are not specific to a single
+     codeset.  */
+
+# if HAVE_CFPREFERENCESCOPYAPPVALUE
+  /* Mac OS X 10.4 or newer */
+  /* Don't use the API introduced in Mac OS X 10.5, CFLocaleCopyCurrent,
+     because in macOS 10.13.4 it has the following behaviour:
+     When two or more languages are specified in the
+     "System Preferences > Language & Region > Preferred Languages" panel,
+     it returns en_CC where CC is the territory (even when English is not among
+     the preferred languages!).  What we want instead is what
+     CFLocaleCopyCurrent returned in earlier macOS releases and what
+     CFPreferencesCopyAppValue still returns, namely ll_CC where ll is the
+     first among the preferred languages and CC is the territory.  */
+  {
+    /* Cache the locale name, since CoreFoundation calls are expensive.  */
+    static const char *cached_localename;
+
+    if (cached_localename == NULL)
+      {
+        char namebuf[256];
+        CFTypeRef value =
+          CFPreferencesCopyAppValue (CFSTR ("AppleLocale"),
+                                     kCFPreferencesCurrentApplication);
+        if (value != NULL && CFGetTypeID (value) == CFStringGetTypeID ())
+          {
+            CFStringRef name = (CFStringRef)value;
+
+            if (CFStringGetCString (name, namebuf, sizeof (namebuf),
+                                    kCFStringEncodingASCII))
+              {
+                gl_locale_name_canonicalize (namebuf);
+                cached_localename = strdup (namebuf);
+              }
+          }
+        if (cached_localename == NULL)
+          cached_localename = "C";
+      }
+    return cached_localename;
+  }
+
+# endif
+
+# if defined WINDOWS_NATIVE || defined __CYGWIN__ /* Native Windows or Cygwin */
+  {
+    LCID lcid;
+
+    /* Use native Windows API locale ID.  */
+    lcid = GetThreadLocale ();
+
+    return gl_locale_name_from_win32_LCID (lcid);
+  }
+# endif
+#endif
+}
+
+/* Determine the current locale's name, and canonicalize it into XPG syntax
+     language[_territory][.codeset][@modifier]
+   The codeset part in the result is not reliable; the locale_charset()
+   should be used for codeset information instead.
+   The result must not be freed; it is statically allocated.  */
+
+const char *
+gl_locale_name (int category, const char *categoryname)
+{
+  const char *retval;
+
+  retval = gl_locale_name_thread (category, categoryname);
+  if (retval != NULL)
+    return retval;
+
+  retval = gl_locale_name_posix (category, categoryname);
+  if (retval != NULL)
+    return retval;
+
+  return gl_locale_name_default ();
+}
diff --git a/src/grep/gnulib-tests/localename.h b/src/grep/gnulib-tests/localename.h
new file mode 100644
index 0000000..1260aec
--- /dev/null
+++ b/src/grep/gnulib-tests/localename.h
@@ -0,0 +1,98 @@
+/* Determine name of the currently selected locale.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation; either version 2.1 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_LOCALENAME_H
+#define _GL_LOCALENAME_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Determine the current locale's name.
+   It considers both the POSIX notion of locale name (see functions
+   gl_locale_name_thread and gl_locale_name_posix) and the system notion
+   of locale name (see function gl_locale_name_default).
+   CATEGORY is a locale category abbreviation, as defined in <locale.h>,
+   but not LC_ALL. E.g. LC_MESSAGES.
+   CATEGORYNAME is the name of CATEGORY as a string, e.g. "LC_MESSAGES".
+   Return the locale category's name, canonicalized into XPG syntax
+     language[_territory][.codeset][@modifier]
+   The codeset part in the result is not reliable; the locale_charset()
+   should be used for codeset information instead.
+   The result must not be freed; it is statically allocated.  */
+extern const char * gl_locale_name (int category, const char *categoryname);
+
+/* Determine the current per-thread locale's name, as specified by uselocale()
+   calls.
+   CATEGORY is a locale category abbreviation, as defined in <locale.h>,
+   but not LC_ALL. E.g. LC_MESSAGES.
+   CATEGORYNAME is the name of CATEGORY as a string, e.g. "LC_MESSAGES".
+   Return the locale category's name, canonicalized into XPG syntax
+     language[_territory][.codeset][@modifier]
+   or NULL if no locale has been specified for the current thread.
+   The codeset part in the result is not reliable; the locale_charset()
+   should be used for codeset information instead.
+   The result must not be freed; it is statically allocated.  */
+extern const char * gl_locale_name_thread (int category, const char *categoryname);
+
+/* Determine the thread-independent current locale's name, as specified by
+   setlocale() calls or by environment variables.
+   CATEGORY is a locale category abbreviation, as defined in <locale.h>,
+   but not LC_ALL. E.g. LC_MESSAGES.
+   CATEGORYNAME is the name of CATEGORY as a string, e.g. "LC_MESSAGES".
+   Return the locale category's name, canonicalized into XPG syntax
+     language[_territory][.codeset][@modifier]
+   or NULL if no locale has been specified to setlocale() or by environment
+   variables.
+   The codeset part in the result is not reliable; the locale_charset()
+   should be used for codeset information instead.
+   The result must not be freed; it is statically allocated.  */
+extern const char * gl_locale_name_posix (int category, const char *categoryname);
+
+/* Determine the default locale's name, as specified by environment
+   variables.
+   Return the locale category's name, or NULL if no locale has been specified
+   by environment variables.
+   The result must not be freed; it is statically allocated.  */
+extern const char * gl_locale_name_environ (int category, const char *categoryname);
+
+/* Determine the default locale's name.  This is the current locale's name,
+   if not specified by uselocale() calls, by setlocale() calls, or by
+   environment variables.  This locale name is usually determined by systems
+   settings that the user can manipulate through a GUI.
+
+   Quoting POSIX:2001:
+     "All implementations shall define a locale as the default locale,
+      to be invoked when no environment variables are set, or set to the
+      empty string.  This default locale can be the C locale or any other
+      implementation-defined locale.  Some implementations may provide
+      facilities for local installation administrators to set the default
+      locale, customizing it for each location.  IEEE Std 1003.1-2001 does
+      not require such a facility."
+
+   The result must not be freed; it is statically allocated.  */
+extern const char * gl_locale_name_default (void)
+#if !(HAVE_CFPREFERENCESCOPYAPPVALUE || defined _WIN32 || defined __CYGWIN__)
+  _GL_ATTRIBUTE_CONST
+#endif
+  ;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GL_LOCALENAME_H */
diff --git a/src/grep/gnulib-tests/macros.h b/src/grep/gnulib-tests/macros.h
new file mode 100644
index 0000000..fccfc50
--- /dev/null
+++ b/src/grep/gnulib-tests/macros.h
@@ -0,0 +1,109 @@
+/* Common macros used by gnulib tests.
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+
+/* This file contains macros that are used by many gnulib tests.
+   Put here only frequently used macros, say, used by 10 tests or more.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifndef FALLTHROUGH
+# if (__GNUC__ >= 7) || (__clang_major__ >= 10)
+#  define FALLTHROUGH __attribute__ ((__fallthrough__))
+# else
+#  define FALLTHROUGH ((void) 0)
+# endif
+#endif
+
+/* Define ASSERT_STREAM before including this file if ASSERT must
+   target a stream other than stderr.  */
+#ifndef ASSERT_STREAM
+# define ASSERT_STREAM stderr
+#endif
+
+/* ASSERT (condition);
+   verifies that the specified condition is fulfilled.  If not, a message
+   is printed to ASSERT_STREAM if defined (defaulting to stderr if
+   undefined) and the program is terminated with an error code.
+
+   This macro has the following properties:
+     - The programmer specifies the expected condition, not the failure
+       condition.  This simplifies thinking.
+     - The condition is tested always, regardless of compilation flags.
+       (Unlike the macro from <assert.h>.)
+     - On Unix platforms, the tester can debug the test program with a
+       debugger (provided core dumps are enabled: "ulimit -c unlimited").
+     - For the sake of platforms where no debugger is available (such as
+       some mingw systems), an error message is printed on the error
+       stream that includes the source location of the ASSERT invocation.
+ */
+#define ASSERT(expr) \
+  do                                                                         \
+    {                                                                        \
+      if (!(expr))                                                           \
+        {                                                                    \
+          fprintf (ASSERT_STREAM, "%s:%d: assertion '%s' failed\n",          \
+                   __FILE__, __LINE__, #expr);                               \
+          fflush (ASSERT_STREAM);                                            \
+          abort ();                                                          \
+        }                                                                    \
+    }                                                                        \
+  while (0)
+
+/* Like ASSERT, except that it uses no stdio.
+   Requires #include <string.h> and #include <unistd.h>.  */
+#define ASSERT_NO_STDIO(expr) \
+  do                                                        \
+    {                                                       \
+      if (!(expr))                                          \
+        {                                                   \
+          WRITE_TO_STDERR (__FILE__);                       \
+          WRITE_TO_STDERR (":");                            \
+          WRITE_MACROEXPANDED_INTEGER_TO_STDERR (__LINE__); \
+          WRITE_TO_STDERR (": assertion '");                \
+          WRITE_TO_STDERR (#expr);                          \
+          WRITE_TO_STDERR ("' failed\n");                   \
+          abort ();                                         \
+        }                                                   \
+    }                                                       \
+  while (0)
+#define WRITE_MACROEXPANDED_INTEGER_TO_STDERR(integer) \
+  WRITE_INTEGER_TO_STDERR(integer)
+#define WRITE_INTEGER_TO_STDERR(integer) \
+  WRITE_TO_STDERR (#integer)
+#define WRITE_TO_STDERR(string_literal) \
+  {                                     \
+    const char *s = string_literal;     \
+    int ret = write (2, s, strlen (s)); \
+    (void) ret;                         \
+  }
+
+/* SIZEOF (array)
+   returns the number of elements of an array.  It works for arrays that are
+   declared outside functions and for local variables of array type.  It does
+   *not* work for function parameters of array type, because they are actually
+   parameters of pointer type.  */
+#define SIZEOF(array) (sizeof (array) / sizeof (array[0]))
+
+/* STREQ (str1, str2)
+   Return true if two strings compare equal.  */
+#define STREQ(a, b) (strcmp (a, b) == 0)
+
+/* Some numbers in the interval [0,1).  */
+extern const float randomf[1000];
+extern const double randomd[1000];
+extern const long double randoml[1000];
diff --git a/src/grep/gnulib-tests/mmap-anon-util.h b/src/grep/gnulib-tests/mmap-anon-util.h
new file mode 100644
index 0000000..b526cb6
--- /dev/null
+++ b/src/grep/gnulib-tests/mmap-anon-util.h
@@ -0,0 +1,99 @@
+/* Some auxiliary stuff for using mmap & friends.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible.  */
+
+#if defined _WIN32 && !defined __CYGWIN__
+
+/* ------------------------ Windows ------------------------ */
+
+# define WIN32_LEAN_AND_MEAN /* avoid including junk */
+# include <windows.h>
+# include <winerror.h>
+# define PROT_NONE PAGE_NOACCESS
+# define PROT_READ PAGE_READONLY
+# define PROT_READ_WRITE PAGE_READWRITE
+
+static void *
+mmap_zeromap (void *map_addr_hint, size_t map_len)
+{
+  if (VirtualAlloc ((void *)((uintptr_t) map_addr_hint & -0x10000),
+                    (((uintptr_t) map_addr_hint + map_len - 1) | 0xffff) + 1
+                    - ((uintptr_t) map_addr_hint & -0x10000),
+                    MEM_RESERVE, PAGE_NOACCESS)
+      && VirtualAlloc (map_addr_hint, map_len, MEM_COMMIT, PAGE_READWRITE))
+    return map_addr_hint;
+  else
+    return (void *)(-1);
+}
+
+int
+munmap (void *addr, size_t len)
+{
+  if (VirtualFree (addr, len, MEM_DECOMMIT))
+    return 0;
+  else
+    return -1;
+}
+
+int
+mprotect (void *addr, size_t len, int prot)
+{
+  DWORD oldprot;
+
+  if (VirtualProtect (addr, len, prot, &oldprot))
+    return 0;
+  else
+    return -1;
+}
+
+#else
+
+/* ------------------------ Unix ------------------------ */
+
+# include <sys/types.h>
+# include <sys/mman.h>
+# include <fcntl.h>
+
+# ifndef PROT_NONE
+#  define PROT_NONE 0
+# endif
+# define PROT_READ_WRITE  (PROT_READ|PROT_WRITE)
+
+# if HAVE_MAP_ANONYMOUS
+#  define zero_fd -1
+#  define map_flags MAP_ANONYMOUS | MAP_PRIVATE
+# else
+#  ifndef MAP_FILE
+#   define MAP_FILE 0
+#  endif
+static int zero_fd;
+#  define map_flags MAP_FILE | MAP_PRIVATE
+# endif
+
+static void *
+mmap_zeromap (void *map_addr_hint, size_t map_len)
+{
+# ifdef __hpux
+  /* HP-UX 10 mmap() often fails when given a hint.  So give the OS complete
+     freedom about the address range.  */
+  return (void *) mmap ((void *) 0,    map_len, PROT_READ_WRITE, map_flags, zero_fd, 0);
+# else
+  return (void *) mmap (map_addr_hint, map_len, PROT_READ_WRITE, map_flags, zero_fd, 0);
+# endif
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/nanosleep.c b/src/grep/gnulib-tests/nanosleep.c
new file mode 100644
index 0000000..10990dc
--- /dev/null
+++ b/src/grep/gnulib-tests/nanosleep.c
@@ -0,0 +1,276 @@
+/* Provide a replacement for the POSIX nanosleep function.
+
+   Copyright (C) 1999-2000, 2002, 2004-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering
+   and Bruno Haible for the native Windows part */
+
+#include <config.h>
+
+#include <time.h>
+
+#include "intprops.h"
+#include "sig-handler.h"
+#include "verify.h"
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/select.h>
+#include <signal.h>
+
+#include <sys/time.h>
+#include <errno.h>
+
+#include <unistd.h>
+
+
+enum { BILLION = 1000 * 1000 * 1000 };
+
+#if HAVE_BUG_BIG_NANOSLEEP
+
+int
+nanosleep (const struct timespec *requested_delay,
+           struct timespec *remaining_delay)
+# undef nanosleep
+{
+  /* nanosleep mishandles large sleeps due to internal overflow problems.
+     The worst known case of this is Linux 2.6.9 with glibc 2.3.4, which
+     can't sleep more than 24.85 days (2^31 milliseconds).  Similarly,
+     cygwin 1.5.x, which can't sleep more than 49.7 days (2^32 milliseconds).
+     Solve this by breaking the sleep up into smaller chunks.  */
+
+  if (requested_delay->tv_nsec < 0 || BILLION <= requested_delay->tv_nsec)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  {
+    /* Verify that time_t is large enough.  */
+    verify (TYPE_MAXIMUM (time_t) / 24 / 24 / 60 / 60);
+    const time_t limit = 24 * 24 * 60 * 60;
+    time_t seconds = requested_delay->tv_sec;
+    struct timespec intermediate;
+    intermediate.tv_nsec = requested_delay->tv_nsec;
+
+    while (limit < seconds)
+      {
+        int result;
+        intermediate.tv_sec = limit;
+        result = nanosleep (&intermediate, remaining_delay);
+        seconds -= limit;
+        if (result)
+          {
+            if (remaining_delay)
+              remaining_delay->tv_sec += seconds;
+            return result;
+          }
+        intermediate.tv_nsec = 0;
+      }
+    intermediate.tv_sec = seconds;
+    return nanosleep (&intermediate, remaining_delay);
+  }
+}
+
+#elif defined _WIN32 && ! defined __CYGWIN__
+/* Native Windows platforms.  */
+
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+
+/* The Windows API function Sleep() has a resolution of about 15 ms and takes
+   at least 5 ms to execute.  We use this function for longer time periods.
+   Additionally, we use busy-looping over short time periods, to get a
+   resolution of about 0.01 ms.  In order to measure such short timespans,
+   we use the QueryPerformanceCounter() function.  */
+
+int
+nanosleep (const struct timespec *requested_delay,
+           struct timespec *remaining_delay)
+{
+  static bool initialized;
+  /* Number of performance counter increments per nanosecond,
+     or zero if it could not be determined.  */
+  static double ticks_per_nanosecond;
+
+  if (requested_delay->tv_nsec < 0 || BILLION <= requested_delay->tv_nsec)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  /* For requested delays of one second or more, 15ms resolution is
+     sufficient.  */
+  if (requested_delay->tv_sec == 0)
+    {
+      if (!initialized)
+        {
+          /* Initialize ticks_per_nanosecond.  */
+          LARGE_INTEGER ticks_per_second;
+
+          if (QueryPerformanceFrequency (&ticks_per_second))
+            ticks_per_nanosecond =
+              (double) ticks_per_second.QuadPart / 1000000000.0;
+
+          initialized = true;
+        }
+      if (ticks_per_nanosecond)
+        {
+          /* QueryPerformanceFrequency worked.  We can use
+             QueryPerformanceCounter.  Use a combination of Sleep and
+             busy-looping.  */
+          /* Number of milliseconds to pass to the Sleep function.
+             Since Sleep can take up to 8 ms less or 8 ms more than requested
+             (or maybe more if the system is loaded), we subtract 10 ms.  */
+          int sleep_millis = (int) requested_delay->tv_nsec / 1000000 - 10;
+          /* Determine how many ticks to delay.  */
+          LONGLONG wait_ticks = requested_delay->tv_nsec * ticks_per_nanosecond;
+          /* Start.  */
+          LARGE_INTEGER counter_before;
+          if (QueryPerformanceCounter (&counter_before))
+            {
+              /* Wait until the performance counter has reached this value.
+                 We don't need to worry about overflow, because the performance
+                 counter is reset at reboot, and with a frequency of 3.6E6
+                 ticks per second 63 bits suffice for over 80000 years.  */
+              LONGLONG wait_until = counter_before.QuadPart + wait_ticks;
+              /* Use Sleep for the longest part.  */
+              if (sleep_millis > 0)
+                Sleep (sleep_millis);
+              /* Busy-loop for the rest.  */
+              for (;;)
+                {
+                  LARGE_INTEGER counter_after;
+                  if (!QueryPerformanceCounter (&counter_after))
+                    /* QueryPerformanceCounter failed, but succeeded earlier.
+                       Should not happen.  */
+                    break;
+                  if (counter_after.QuadPart >= wait_until)
+                    /* The requested time has elapsed.  */
+                    break;
+                }
+              goto done;
+            }
+        }
+    }
+  /* Implementation for long delays and as fallback.  */
+  Sleep (requested_delay->tv_sec * 1000 + requested_delay->tv_nsec / 1000000);
+
+ done:
+  /* Sleep is not interruptible.  So there is no remaining delay.  */
+  if (remaining_delay != NULL)
+    {
+      remaining_delay->tv_sec = 0;
+      remaining_delay->tv_nsec = 0;
+    }
+  return 0;
+}
+
+#else
+/* Unix platforms lacking nanosleep. */
+
+/* Some systems (MSDOS) don't have SIGCONT.
+   Using SIGTERM here turns the signal-handling code below
+   into a no-op on such systems. */
+# ifndef SIGCONT
+#  define SIGCONT SIGTERM
+# endif
+
+static sig_atomic_t volatile suspended;
+
+/* Handle SIGCONT. */
+
+static _GL_ASYNC_SAFE void
+sighandler (int sig)
+{
+  suspended = 1;
+}
+
+/* Suspend execution for at least *TS_DELAY seconds.  */
+
+static int
+my_usleep (const struct timespec *ts_delay)
+{
+  struct timeval tv_delay;
+  tv_delay.tv_sec = ts_delay->tv_sec;
+  tv_delay.tv_usec = (ts_delay->tv_nsec + 999) / 1000;
+  if (tv_delay.tv_usec == 1000000)
+    {
+      if (tv_delay.tv_sec == TYPE_MAXIMUM (time_t))
+        tv_delay.tv_usec = 1000000 - 1; /* close enough */
+      else
+        {
+          tv_delay.tv_sec++;
+          tv_delay.tv_usec = 0;
+        }
+    }
+  return select (0, NULL, NULL, NULL, &tv_delay);
+}
+
+/* Suspend execution for at least *REQUESTED_DELAY seconds.  The
+   *REMAINING_DELAY part isn't implemented yet.  */
+
+int
+nanosleep (const struct timespec *requested_delay,
+           struct timespec *remaining_delay)
+{
+  static bool initialized;
+
+  if (requested_delay->tv_nsec < 0 || BILLION <= requested_delay->tv_nsec)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  /* set up sig handler */
+  if (! initialized)
+    {
+      struct sigaction oldact;
+
+      sigaction (SIGCONT, NULL, &oldact);
+      if (get_handler (&oldact) != SIG_IGN)
+        {
+          struct sigaction newact;
+
+          newact.sa_handler = sighandler;
+          sigemptyset (&newact.sa_mask);
+          newact.sa_flags = 0;
+          sigaction (SIGCONT, &newact, NULL);
+        }
+      initialized = true;
+    }
+
+  suspended = 0;
+
+  if (my_usleep (requested_delay) == -1)
+    {
+      if (suspended)
+        {
+          /* Calculate time remaining.  */
+          /* FIXME: the code in sleep doesn't use this, so there's no
+             rush to implement it.  */
+
+          errno = EINTR;
+        }
+      return -1;
+    }
+
+  /* FIXME: Restore sig handler?  */
+
+  return 0;
+}
+#endif
diff --git a/src/grep/gnulib-tests/nap.h b/src/grep/gnulib-tests/nap.h
new file mode 100644
index 0000000..3d0a51d
--- /dev/null
+++ b/src/grep/gnulib-tests/nap.h
@@ -0,0 +1,162 @@
+/* Assist in file system timestamp tests.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#ifndef GLTEST_NAP_H
+# define GLTEST_NAP_H
+
+# include <limits.h>
+# include <stdbool.h>
+
+# include <intprops.h>
+
+/* Avoid a conflict with a function called nap() on UnixWare.  */
+# if defined _SCO_DS || (defined __SCO_VERSION__ || defined __sysv5__)  /* OpenServer, UnixWare */
+#  include <unistd.h>
+#  undef nap
+#  define nap gl_nap
+# endif
+
+/* Name of the witness file.  */
+#define TEMPFILE BASE "nap.tmp"
+
+/* File descriptor used for the witness file.  */
+static int nap_fd = -1;
+
+/* Return A - B, in ns.
+   Return 0 if the true result would be negative.
+   Return INT_MAX if the true result would be greater than INT_MAX.  */
+static int
+diff_timespec (struct timespec a, struct timespec b)
+{
+  time_t as = a.tv_sec;
+  time_t bs = b.tv_sec;
+  int ans = a.tv_nsec;
+  int bns = b.tv_nsec;
+  int sdiff;
+
+  ASSERT (0 <= ans && ans < 2000000000);
+  ASSERT (0 <= bns && bns < 2000000000);
+
+  if (! (bs < as || (bs == as && bns < ans)))
+    return 0;
+
+  if (INT_SUBTRACT_WRAPV (as, bs, &sdiff)
+      || INT_MULTIPLY_WRAPV (sdiff, 1000000000, &sdiff)
+      || INT_ADD_WRAPV (sdiff, ans - bns, &sdiff))
+    return INT_MAX;
+
+  return sdiff;
+}
+
+/* If DO_WRITE, bump the modification time of the file designated by NAP_FD.
+   Then fetch the new STAT information of NAP_FD.  */
+static void
+nap_get_stat (struct stat *st, int do_write)
+{
+  if (do_write)
+    {
+      ASSERT (write (nap_fd, "\n", 1) == 1);
+#if defined _WIN32 || defined __CYGWIN__
+      /* On Windows, the modification times are not changed until NAP_FD
+         is closed. See
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-writefile> */
+      close (nap_fd);
+      nap_fd = open (TEMPFILE, O_RDWR, 0600);
+      ASSERT (nap_fd != -1);
+      lseek (nap_fd, 0, SEEK_END);
+#endif
+    }
+  ASSERT (fstat (nap_fd, st) == 0);
+}
+
+/* Given a file whose descriptor is FD, see whether delaying by DELAY
+   nanoseconds causes a change in a file's mtime.
+   OLD_ST is the file's status, recently gotten.  */
+static bool
+nap_works (int delay, struct stat old_st)
+{
+  struct stat st;
+  struct timespec delay_spec;
+  delay_spec.tv_sec = delay / 1000000000;
+  delay_spec.tv_nsec = delay % 1000000000;
+  ASSERT (nanosleep (&delay_spec, 0) == 0);
+  nap_get_stat (&st, 1);
+
+  if (diff_timespec (get_stat_mtime (&st), get_stat_mtime (&old_st)))
+    return true;
+
+  return false;
+}
+
+static void
+clear_temp_file (void)
+{
+  if (0 <= nap_fd)
+    {
+      ASSERT (close (nap_fd) != -1);
+      ASSERT (unlink (TEMPFILE) != -1);
+    }
+}
+
+/* Sleep long enough to notice a timestamp difference on the file
+   system in the current directory.  Use an adaptive approach, trying
+   to find the smallest delay which works on the current file system
+   to make the timestamp difference appear.  Assert a maximum delay of
+   ~2 seconds, more precisely sum(2^n) from 0 to 30 = 2^31 - 1 = 2.1s.
+   Assumes that BASE is defined, and requires that the test module
+   depends on nanosleep.  */
+static void
+nap (void)
+{
+  struct stat old_st;
+  static int delay = 1;
+
+  if (-1 == nap_fd)
+    {
+      atexit (clear_temp_file);
+      ASSERT ((nap_fd = creat (TEMPFILE, 0600)) != -1);
+      nap_get_stat (&old_st, 0);
+    }
+  else
+    {
+      ASSERT (0 <= nap_fd);
+      nap_get_stat (&old_st, 1);
+    }
+
+  if (1 < delay)
+    delay = delay / 2;  /* Try half of the previous delay.  */
+  ASSERT (0 < delay);
+
+  for (;;)
+    {
+      if (nap_works (delay, old_st))
+        return;
+      if (delay <= (2147483647 - 1) / 2)
+        {
+          delay = delay * 2 + 1;
+          continue;
+        }
+      else
+        break;
+    }
+
+  /* Bummer: even the highest nap delay didn't work. */
+  ASSERT (0);
+}
+
+#endif /* GLTEST_NAP_H */
diff --git a/src/grep/gnulib-tests/netinet_in.in.h b/src/grep/gnulib-tests/netinet_in.in.h
new file mode 100644
index 0000000..21f3a64
--- /dev/null
+++ b/src/grep/gnulib-tests/netinet_in.in.h
@@ -0,0 +1,47 @@
+/* Substitute for <netinet/in.h>.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _@GUARD_PREFIX@_NETINET_IN_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if @HAVE_NETINET_IN_H@
+
+/* On many platforms, <netinet/in.h> assumes prior inclusion of
+   <sys/types.h>.  */
+# include <sys/types.h>
+
+/* The include_next requires a split double-inclusion guard.  */
+# @INCLUDE_NEXT@ @NEXT_NETINET_IN_H@
+
+#endif
+
+#ifndef _@GUARD_PREFIX@_NETINET_IN_H
+#define _@GUARD_PREFIX@_NETINET_IN_H
+
+#if !@HAVE_NETINET_IN_H@
+
+/* A platform that lacks <netinet/in.h>.  */
+
+# include <sys/socket.h>
+
+#endif
+
+#endif /* _@GUARD_PREFIX@_NETINET_IN_H */
+#endif /* _@GUARD_PREFIX@_NETINET_IN_H */
diff --git a/src/grep/gnulib-tests/offtostr.c b/src/grep/gnulib-tests/offtostr.c
new file mode 100644
index 0000000..b12ff2f
--- /dev/null
+++ b/src/grep/gnulib-tests/offtostr.c
@@ -0,0 +1,20 @@
+/* Convert 'off_t' integer to printable string.
+
+   Copyright (C) 2004-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define anytostr offtostr
+#define inttype off_t
+#include "anytostr.c"
diff --git a/src/grep/gnulib-tests/perror.c b/src/grep/gnulib-tests/perror.c
new file mode 100644
index 0000000..d02b4f6
--- /dev/null
+++ b/src/grep/gnulib-tests/perror.c
@@ -0,0 +1,49 @@
+/* Print a message describing error code.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible and Simon Josefsson.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdio.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "strerror-override.h"
+
+/* Use the system functions, not the gnulib overrides in this file.  */
+#undef fprintf
+
+void
+perror (const char *string)
+{
+  char stackbuf[STACKBUF_LEN];
+  int ret;
+
+  /* Our implementation guarantees that this will be a non-empty
+     string, even if it returns EINVAL; and stackbuf should be sized
+     large enough to avoid ERANGE.  */
+  ret = strerror_r (errno, stackbuf, sizeof stackbuf);
+  if (ret == ERANGE)
+    abort ();
+
+  if (string != NULL && *string != '\0')
+    fprintf (stderr, "%s: %s\n", string, stackbuf);
+  else
+    fprintf (stderr, "%s\n", stackbuf);
+}
diff --git a/src/grep/gnulib-tests/printf-args.c b/src/grep/gnulib-tests/printf-args.c
new file mode 100644
index 0000000..b822682
--- /dev/null
+++ b/src/grep/gnulib-tests/printf-args.c
@@ -0,0 +1,183 @@
+/* Decomposed printf argument list.
+   Copyright (C) 1999, 2002-2003, 2005-2007, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This file can be parametrized with the following macros:
+     ENABLE_UNISTDIO    Set to 1 to enable the unistdio extensions.
+     PRINTF_FETCHARGS   Name of the function to be defined.
+     STATIC             Set to 'static' to declare the function static.  */
+
+#ifndef PRINTF_FETCHARGS
+# include <config.h>
+#endif
+
+/* Specification.  */
+#ifndef PRINTF_FETCHARGS
+# include "printf-args.h"
+#endif
+
+#ifdef STATIC
+STATIC
+#endif
+int
+PRINTF_FETCHARGS (va_list args, arguments *a)
+{
+  size_t i;
+  argument *ap;
+
+  for (i = 0, ap = &a->arg[0]; i < a->count; i++, ap++)
+    switch (ap->type)
+      {
+      case TYPE_SCHAR:
+        ap->a.a_schar = va_arg (args, /*signed char*/ int);
+        break;
+      case TYPE_UCHAR:
+        ap->a.a_uchar = va_arg (args, /*unsigned char*/ int);
+        break;
+      case TYPE_SHORT:
+        ap->a.a_short = va_arg (args, /*short*/ int);
+        break;
+      case TYPE_USHORT:
+        ap->a.a_ushort = va_arg (args, /*unsigned short*/ int);
+        break;
+      case TYPE_INT:
+        ap->a.a_int = va_arg (args, int);
+        break;
+      case TYPE_UINT:
+        ap->a.a_uint = va_arg (args, unsigned int);
+        break;
+      case TYPE_LONGINT:
+        ap->a.a_longint = va_arg (args, long int);
+        break;
+      case TYPE_ULONGINT:
+        ap->a.a_ulongint = va_arg (args, unsigned long int);
+        break;
+      case TYPE_LONGLONGINT:
+        ap->a.a_longlongint = va_arg (args, long long int);
+        break;
+      case TYPE_ULONGLONGINT:
+        ap->a.a_ulonglongint = va_arg (args, unsigned long long int);
+        break;
+      case TYPE_DOUBLE:
+        ap->a.a_double = va_arg (args, double);
+        break;
+      case TYPE_LONGDOUBLE:
+        ap->a.a_longdouble = va_arg (args, long double);
+        break;
+      case TYPE_CHAR:
+        ap->a.a_char = va_arg (args, int);
+        break;
+#if HAVE_WINT_T
+      case TYPE_WIDE_CHAR:
+        /* Although ISO C 99 7.24.1.(2) says that wint_t is "unchanged by
+           default argument promotions", this is not the case in mingw32,
+           where wint_t is 'unsigned short'.  */
+        ap->a.a_wide_char =
+          (sizeof (wint_t) < sizeof (int)
+           ? (wint_t) va_arg (args, int)
+           : va_arg (args, wint_t));
+        break;
+#endif
+      case TYPE_STRING:
+        ap->a.a_string = va_arg (args, const char *);
+        /* A null pointer is an invalid argument for "%s", but in practice
+           it occurs quite frequently in printf statements that produce
+           debug output.  Use a fallback in this case.  */
+        if (ap->a.a_string == NULL)
+          ap->a.a_string = "(NULL)";
+        break;
+#if HAVE_WCHAR_T
+      case TYPE_WIDE_STRING:
+        ap->a.a_wide_string = va_arg (args, const wchar_t *);
+        /* A null pointer is an invalid argument for "%ls", but in practice
+           it occurs quite frequently in printf statements that produce
+           debug output.  Use a fallback in this case.  */
+        if (ap->a.a_wide_string == NULL)
+          {
+            static const wchar_t wide_null_string[] =
+              {
+                (wchar_t)'(',
+                (wchar_t)'N', (wchar_t)'U', (wchar_t)'L', (wchar_t)'L',
+                (wchar_t)')',
+                (wchar_t)0
+              };
+            ap->a.a_wide_string = wide_null_string;
+          }
+        break;
+#endif
+      case TYPE_POINTER:
+        ap->a.a_pointer = va_arg (args, void *);
+        break;
+      case TYPE_COUNT_SCHAR_POINTER:
+        ap->a.a_count_schar_pointer = va_arg (args, signed char *);
+        break;
+      case TYPE_COUNT_SHORT_POINTER:
+        ap->a.a_count_short_pointer = va_arg (args, short *);
+        break;
+      case TYPE_COUNT_INT_POINTER:
+        ap->a.a_count_int_pointer = va_arg (args, int *);
+        break;
+      case TYPE_COUNT_LONGINT_POINTER:
+        ap->a.a_count_longint_pointer = va_arg (args, long int *);
+        break;
+      case TYPE_COUNT_LONGLONGINT_POINTER:
+        ap->a.a_count_longlongint_pointer = va_arg (args, long long int *);
+        break;
+#if ENABLE_UNISTDIO
+      /* The unistdio extensions.  */
+      case TYPE_U8_STRING:
+        ap->a.a_u8_string = va_arg (args, const uint8_t *);
+        /* A null pointer is an invalid argument for "%U", but in practice
+           it occurs quite frequently in printf statements that produce
+           debug output.  Use a fallback in this case.  */
+        if (ap->a.a_u8_string == NULL)
+          {
+            static const uint8_t u8_null_string[] =
+              { '(', 'N', 'U', 'L', 'L', ')', 0 };
+            ap->a.a_u8_string = u8_null_string;
+          }
+        break;
+      case TYPE_U16_STRING:
+        ap->a.a_u16_string = va_arg (args, const uint16_t *);
+        /* A null pointer is an invalid argument for "%lU", but in practice
+           it occurs quite frequently in printf statements that produce
+           debug output.  Use a fallback in this case.  */
+        if (ap->a.a_u16_string == NULL)
+          {
+            static const uint16_t u16_null_string[] =
+              { '(', 'N', 'U', 'L', 'L', ')', 0 };
+            ap->a.a_u16_string = u16_null_string;
+          }
+        break;
+      case TYPE_U32_STRING:
+        ap->a.a_u32_string = va_arg (args, const uint32_t *);
+        /* A null pointer is an invalid argument for "%llU", but in practice
+           it occurs quite frequently in printf statements that produce
+           debug output.  Use a fallback in this case.  */
+        if (ap->a.a_u32_string == NULL)
+          {
+            static const uint32_t u32_null_string[] =
+              { '(', 'N', 'U', 'L', 'L', ')', 0 };
+            ap->a.a_u32_string = u32_null_string;
+          }
+        break;
+#endif
+      default:
+        /* Unknown type.  */
+        return -1;
+      }
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/printf-args.h b/src/grep/gnulib-tests/printf-args.h
new file mode 100644
index 0000000..c8d9174
--- /dev/null
+++ b/src/grep/gnulib-tests/printf-args.h
@@ -0,0 +1,150 @@
+/* Decomposed printf argument list.
+   Copyright (C) 1999, 2002-2003, 2006-2007, 2011-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _PRINTF_ARGS_H
+#define _PRINTF_ARGS_H
+
+/* This file can be parametrized with the following macros:
+     ENABLE_UNISTDIO    Set to 1 to enable the unistdio extensions.
+     PRINTF_FETCHARGS   Name of the function to be declared.
+     STATIC             Set to 'static' to declare the function static.  */
+
+/* Default parameters.  */
+#ifndef PRINTF_FETCHARGS
+# define PRINTF_FETCHARGS printf_fetchargs
+#endif
+
+/* Get size_t.  */
+#include <stddef.h>
+
+/* Get wchar_t.  */
+#if HAVE_WCHAR_T
+# include <stddef.h>
+#endif
+
+/* Get wint_t.  */
+#if HAVE_WINT_T
+# include <wchar.h>
+#endif
+
+/* Get va_list.  */
+#include <stdarg.h>
+
+
+/* Argument types */
+typedef enum
+{
+  TYPE_NONE,
+  TYPE_SCHAR,
+  TYPE_UCHAR,
+  TYPE_SHORT,
+  TYPE_USHORT,
+  TYPE_INT,
+  TYPE_UINT,
+  TYPE_LONGINT,
+  TYPE_ULONGINT,
+  TYPE_LONGLONGINT,
+  TYPE_ULONGLONGINT,
+  TYPE_DOUBLE,
+  TYPE_LONGDOUBLE,
+  TYPE_CHAR,
+#if HAVE_WINT_T
+  TYPE_WIDE_CHAR,
+#endif
+  TYPE_STRING,
+#if HAVE_WCHAR_T
+  TYPE_WIDE_STRING,
+#endif
+  TYPE_POINTER,
+  TYPE_COUNT_SCHAR_POINTER,
+  TYPE_COUNT_SHORT_POINTER,
+  TYPE_COUNT_INT_POINTER,
+  TYPE_COUNT_LONGINT_POINTER,
+  TYPE_COUNT_LONGLONGINT_POINTER
+#if ENABLE_UNISTDIO
+  /* The unistdio extensions.  */
+, TYPE_U8_STRING
+, TYPE_U16_STRING
+, TYPE_U32_STRING
+#endif
+} arg_type;
+
+/* Polymorphic argument */
+typedef struct
+{
+  arg_type type;
+  union
+  {
+    signed char                 a_schar;
+    unsigned char               a_uchar;
+    short                       a_short;
+    unsigned short              a_ushort;
+    int                         a_int;
+    unsigned int                a_uint;
+    long int                    a_longint;
+    unsigned long int           a_ulongint;
+    long long int               a_longlongint;
+    unsigned long long int      a_ulonglongint;
+    float                       a_float;
+    double                      a_double;
+    long double                 a_longdouble;
+    int                         a_char;
+#if HAVE_WINT_T
+    wint_t                      a_wide_char;
+#endif
+    const char*                 a_string;
+#if HAVE_WCHAR_T
+    const wchar_t*              a_wide_string;
+#endif
+    void*                       a_pointer;
+    signed char *               a_count_schar_pointer;
+    short *                     a_count_short_pointer;
+    int *                       a_count_int_pointer;
+    long int *                  a_count_longint_pointer;
+    long long int *             a_count_longlongint_pointer;
+#if ENABLE_UNISTDIO
+    /* The unistdio extensions.  */
+    const uint8_t *             a_u8_string;
+    const uint16_t *            a_u16_string;
+    const uint32_t *            a_u32_string;
+#endif
+  }
+  a;
+}
+argument;
+
+/* Number of directly allocated arguments (no malloc() needed).  */
+#define N_DIRECT_ALLOC_ARGUMENTS 7
+
+typedef struct
+{
+  size_t count;
+  argument *arg;
+  argument direct_alloc_arg[N_DIRECT_ALLOC_ARGUMENTS];
+}
+arguments;
+
+
+/* Fetch the arguments, putting them into a. */
+#ifdef STATIC
+STATIC
+#else
+extern
+#endif
+int PRINTF_FETCHARGS (va_list args, arguments *a);
+
+#endif /* _PRINTF_ARGS_H */
diff --git a/src/grep/gnulib-tests/printf-parse.c b/src/grep/gnulib-tests/printf-parse.c
new file mode 100644
index 0000000..f21cc17
--- /dev/null
+++ b/src/grep/gnulib-tests/printf-parse.c
@@ -0,0 +1,623 @@
+/* Formatted output to strings.
+   Copyright (C) 1999-2000, 2002-2003, 2006-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This file can be parametrized with the following macros:
+     CHAR_T             The element type of the format string.
+     CHAR_T_ONLY_ASCII  Set to 1 to enable verification that all characters
+                        in the format string are ASCII.
+     DIRECTIVE          Structure denoting a format directive.
+                        Depends on CHAR_T.
+     DIRECTIVES         Structure denoting the set of format directives of a
+                        format string.  Depends on CHAR_T.
+     PRINTF_PARSE       Function that parses a format string.
+                        Depends on CHAR_T.
+     STATIC             Set to 'static' to declare the function static.
+     ENABLE_UNISTDIO    Set to 1 to enable the unistdio extensions.  */
+
+#ifndef PRINTF_PARSE
+# include <config.h>
+#endif
+
+/* Specification.  */
+#ifndef PRINTF_PARSE
+# include "printf-parse.h"
+#endif
+
+/* Default parameters.  */
+#ifndef PRINTF_PARSE
+# define PRINTF_PARSE printf_parse
+# define CHAR_T char
+# define DIRECTIVE char_directive
+# define DIRECTIVES char_directives
+#endif
+
+/* Get size_t, NULL.  */
+#include <stddef.h>
+
+/* Get intmax_t.  */
+#include <stdint.h>
+
+/* malloc(), realloc(), free().  */
+#include <stdlib.h>
+
+/* memcpy().  */
+#include <string.h>
+
+/* errno.  */
+#include <errno.h>
+
+/* Checked size_t computations.  */
+#include "xsize.h"
+
+#if CHAR_T_ONLY_ASCII
+/* c_isascii().  */
+# include "c-ctype.h"
+#endif
+
+#ifdef STATIC
+STATIC
+#endif
+int
+PRINTF_PARSE (const CHAR_T *format, DIRECTIVES *d, arguments *a)
+{
+  const CHAR_T *cp = format;    /* pointer into format */
+  size_t arg_posn = 0;          /* number of regular arguments consumed */
+  size_t d_allocated;           /* allocated elements of d->dir */
+  size_t a_allocated;           /* allocated elements of a->arg */
+  size_t max_width_length = 0;
+  size_t max_precision_length = 0;
+
+  d->count = 0;
+  d_allocated = N_DIRECT_ALLOC_DIRECTIVES;
+  d->dir = d->direct_alloc_dir;
+
+  a->count = 0;
+  a_allocated = N_DIRECT_ALLOC_ARGUMENTS;
+  a->arg = a->direct_alloc_arg;
+
+#define REGISTER_ARG(_index_,_type_) \
+  {                                                                     \
+    size_t n = (_index_);                                               \
+    if (n >= a_allocated)                                               \
+      {                                                                 \
+        size_t memory_size;                                             \
+        argument *memory;                                               \
+                                                                        \
+        a_allocated = xtimes (a_allocated, 2);                          \
+        if (a_allocated <= n)                                           \
+          a_allocated = xsum (n, 1);                                    \
+        memory_size = xtimes (a_allocated, sizeof (argument));          \
+        if (size_overflow_p (memory_size))                              \
+          /* Overflow, would lead to out of memory.  */                 \
+          goto out_of_memory;                                           \
+        memory = (argument *) (a->arg != a->direct_alloc_arg            \
+                               ? realloc (a->arg, memory_size)          \
+                               : malloc (memory_size));                 \
+        if (memory == NULL)                                             \
+          /* Out of memory.  */                                         \
+          goto out_of_memory;                                           \
+        if (a->arg == a->direct_alloc_arg)                              \
+          memcpy (memory, a->arg, a->count * sizeof (argument));        \
+        a->arg = memory;                                                \
+      }                                                                 \
+    while (a->count <= n)                                               \
+      a->arg[a->count++].type = TYPE_NONE;                              \
+    if (a->arg[n].type == TYPE_NONE)                                    \
+      a->arg[n].type = (_type_);                                        \
+    else if (a->arg[n].type != (_type_))                                \
+      /* Ambiguous type for positional argument.  */                    \
+      goto error;                                                       \
+  }
+
+  while (*cp != '\0')
+    {
+      CHAR_T c = *cp++;
+      if (c == '%')
+        {
+          size_t arg_index = ARG_NONE;
+          DIRECTIVE *dp = &d->dir[d->count]; /* pointer to next directive */
+
+          /* Initialize the next directive.  */
+          dp->dir_start = cp - 1;
+          dp->flags = 0;
+          dp->width_start = NULL;
+          dp->width_end = NULL;
+          dp->width_arg_index = ARG_NONE;
+          dp->precision_start = NULL;
+          dp->precision_end = NULL;
+          dp->precision_arg_index = ARG_NONE;
+          dp->arg_index = ARG_NONE;
+
+          /* Test for positional argument.  */
+          if (*cp >= '0' && *cp <= '9')
+            {
+              const CHAR_T *np;
+
+              for (np = cp; *np >= '0' && *np <= '9'; np++)
+                ;
+              if (*np == '$')
+                {
+                  size_t n = 0;
+
+                  for (np = cp; *np >= '0' && *np <= '9'; np++)
+                    n = xsum (xtimes (n, 10), *np - '0');
+                  if (n == 0)
+                    /* Positional argument 0.  */
+                    goto error;
+                  if (size_overflow_p (n))
+                    /* n too large, would lead to out of memory later.  */
+                    goto error;
+                  arg_index = n - 1;
+                  cp = np + 1;
+                }
+            }
+
+          /* Read the flags.  */
+          for (;;)
+            {
+              if (*cp == '\'')
+                {
+                  dp->flags |= FLAG_GROUP;
+                  cp++;
+                }
+              else if (*cp == '-')
+                {
+                  dp->flags |= FLAG_LEFT;
+                  cp++;
+                }
+              else if (*cp == '+')
+                {
+                  dp->flags |= FLAG_SHOWSIGN;
+                  cp++;
+                }
+              else if (*cp == ' ')
+                {
+                  dp->flags |= FLAG_SPACE;
+                  cp++;
+                }
+              else if (*cp == '#')
+                {
+                  dp->flags |= FLAG_ALT;
+                  cp++;
+                }
+              else if (*cp == '0')
+                {
+                  dp->flags |= FLAG_ZERO;
+                  cp++;
+                }
+#if __GLIBC__ >= 2 && !defined __UCLIBC__
+              else if (*cp == 'I')
+                {
+                  dp->flags |= FLAG_LOCALIZED;
+                  cp++;
+                }
+#endif
+              else
+                break;
+            }
+
+          /* Parse the field width.  */
+          if (*cp == '*')
+            {
+              dp->width_start = cp;
+              cp++;
+              dp->width_end = cp;
+              if (max_width_length < 1)
+                max_width_length = 1;
+
+              /* Test for positional argument.  */
+              if (*cp >= '0' && *cp <= '9')
+                {
+                  const CHAR_T *np;
+
+                  for (np = cp; *np >= '0' && *np <= '9'; np++)
+                    ;
+                  if (*np == '$')
+                    {
+                      size_t n = 0;
+
+                      for (np = cp; *np >= '0' && *np <= '9'; np++)
+                        n = xsum (xtimes (n, 10), *np - '0');
+                      if (n == 0)
+                        /* Positional argument 0.  */
+                        goto error;
+                      if (size_overflow_p (n))
+                        /* n too large, would lead to out of memory later.  */
+                        goto error;
+                      dp->width_arg_index = n - 1;
+                      cp = np + 1;
+                    }
+                }
+              if (dp->width_arg_index == ARG_NONE)
+                {
+                  dp->width_arg_index = arg_posn++;
+                  if (dp->width_arg_index == ARG_NONE)
+                    /* arg_posn wrapped around.  */
+                    goto error;
+                }
+              REGISTER_ARG (dp->width_arg_index, TYPE_INT);
+            }
+          else if (*cp >= '0' && *cp <= '9')
+            {
+              size_t width_length;
+
+              dp->width_start = cp;
+              for (; *cp >= '0' && *cp <= '9'; cp++)
+                ;
+              dp->width_end = cp;
+              width_length = dp->width_end - dp->width_start;
+              if (max_width_length < width_length)
+                max_width_length = width_length;
+            }
+
+          /* Parse the precision.  */
+          if (*cp == '.')
+            {
+              cp++;
+              if (*cp == '*')
+                {
+                  dp->precision_start = cp - 1;
+                  cp++;
+                  dp->precision_end = cp;
+                  if (max_precision_length < 2)
+                    max_precision_length = 2;
+
+                  /* Test for positional argument.  */
+                  if (*cp >= '0' && *cp <= '9')
+                    {
+                      const CHAR_T *np;
+
+                      for (np = cp; *np >= '0' && *np <= '9'; np++)
+                        ;
+                      if (*np == '$')
+                        {
+                          size_t n = 0;
+
+                          for (np = cp; *np >= '0' && *np <= '9'; np++)
+                            n = xsum (xtimes (n, 10), *np - '0');
+                          if (n == 0)
+                            /* Positional argument 0.  */
+                            goto error;
+                          if (size_overflow_p (n))
+                            /* n too large, would lead to out of memory
+                               later.  */
+                            goto error;
+                          dp->precision_arg_index = n - 1;
+                          cp = np + 1;
+                        }
+                    }
+                  if (dp->precision_arg_index == ARG_NONE)
+                    {
+                      dp->precision_arg_index = arg_posn++;
+                      if (dp->precision_arg_index == ARG_NONE)
+                        /* arg_posn wrapped around.  */
+                        goto error;
+                    }
+                  REGISTER_ARG (dp->precision_arg_index, TYPE_INT);
+                }
+              else
+                {
+                  size_t precision_length;
+
+                  dp->precision_start = cp - 1;
+                  for (; *cp >= '0' && *cp <= '9'; cp++)
+                    ;
+                  dp->precision_end = cp;
+                  precision_length = dp->precision_end - dp->precision_start;
+                  if (max_precision_length < precision_length)
+                    max_precision_length = precision_length;
+                }
+            }
+
+          {
+            arg_type type;
+
+            /* Parse argument type/size specifiers.  */
+            {
+              int flags = 0;
+
+              for (;;)
+                {
+                  if (*cp == 'h')
+                    {
+                      flags |= (1 << (flags & 1));
+                      cp++;
+                    }
+                  else if (*cp == 'L')
+                    {
+                      flags |= 4;
+                      cp++;
+                    }
+                  else if (*cp == 'l')
+                    {
+                      flags += 8;
+                      cp++;
+                    }
+                  else if (*cp == 'j')
+                    {
+                      if (sizeof (intmax_t) > sizeof (long))
+                        {
+                          /* intmax_t = long long */
+                          flags += 16;
+                        }
+                      else if (sizeof (intmax_t) > sizeof (int))
+                        {
+                          /* intmax_t = long */
+                          flags += 8;
+                        }
+                      cp++;
+                    }
+                  else if (*cp == 'z' || *cp == 'Z')
+                    {
+                      /* 'z' is standardized in ISO C 99, but glibc uses 'Z'
+                         because the warning facility in gcc-2.95.2 understands
+                         only 'Z' (see gcc-2.95.2/gcc/c-common.c:1784).  */
+                      if (sizeof (size_t) > sizeof (long))
+                        {
+                          /* size_t = long long */
+                          flags += 16;
+                        }
+                      else if (sizeof (size_t) > sizeof (int))
+                        {
+                          /* size_t = long */
+                          flags += 8;
+                        }
+                      cp++;
+                    }
+                  else if (*cp == 't')
+                    {
+                      if (sizeof (ptrdiff_t) > sizeof (long))
+                        {
+                          /* ptrdiff_t = long long */
+                          flags += 16;
+                        }
+                      else if (sizeof (ptrdiff_t) > sizeof (int))
+                        {
+                          /* ptrdiff_t = long */
+                          flags += 8;
+                        }
+                      cp++;
+                    }
+#if defined __APPLE__ && defined __MACH__
+                  /* On Mac OS X 10.3, PRIdMAX is defined as "qd".
+                     We cannot change it to "lld" because PRIdMAX must also
+                     be understood by the system's printf routines.  */
+                  else if (*cp == 'q')
+                    {
+                      if (64 / 8 > sizeof (long))
+                        {
+                          /* int64_t = long long */
+                          flags += 16;
+                        }
+                      else
+                        {
+                          /* int64_t = long */
+                          flags += 8;
+                        }
+                      cp++;
+                    }
+#endif
+#if defined _WIN32 && ! defined __CYGWIN__
+                  /* On native Windows, PRIdMAX is defined as "I64d".
+                     We cannot change it to "lld" because PRIdMAX must also
+                     be understood by the system's printf routines.  */
+                  else if (*cp == 'I' && cp[1] == '6' && cp[2] == '4')
+                    {
+                      if (64 / 8 > sizeof (long))
+                        {
+                          /* __int64 = long long */
+                          flags += 16;
+                        }
+                      else
+                        {
+                          /* __int64 = long */
+                          flags += 8;
+                        }
+                      cp += 3;
+                    }
+#endif
+                  else
+                    break;
+                }
+
+              /* Read the conversion character.  */
+              c = *cp++;
+              switch (c)
+                {
+                case 'd': case 'i':
+                  /* If 'long long' is larger than 'long':  */
+                  if (flags >= 16 || (flags & 4))
+                    type = TYPE_LONGLONGINT;
+                  else
+                  /* If 'long long' is the same as 'long', we parse "lld" into
+                     TYPE_LONGINT.  */
+                  if (flags >= 8)
+                    type = TYPE_LONGINT;
+                  else if (flags & 2)
+                    type = TYPE_SCHAR;
+                  else if (flags & 1)
+                    type = TYPE_SHORT;
+                  else
+                    type = TYPE_INT;
+                  break;
+                case 'o': case 'u': case 'x': case 'X':
+                  /* If 'unsigned long long' is larger than 'unsigned long':  */
+                  if (flags >= 16 || (flags & 4))
+                    type = TYPE_ULONGLONGINT;
+                  else
+                  /* If 'unsigned long long' is the same as 'unsigned long', we
+                     parse "llu" into TYPE_ULONGINT.  */
+                  if (flags >= 8)
+                    type = TYPE_ULONGINT;
+                  else if (flags & 2)
+                    type = TYPE_UCHAR;
+                  else if (flags & 1)
+                    type = TYPE_USHORT;
+                  else
+                    type = TYPE_UINT;
+                  break;
+                case 'f': case 'F': case 'e': case 'E': case 'g': case 'G':
+                case 'a': case 'A':
+                  if (flags >= 16 || (flags & 4))
+                    type = TYPE_LONGDOUBLE;
+                  else
+                    type = TYPE_DOUBLE;
+                  break;
+                case 'c':
+                  if (flags >= 8)
+#if HAVE_WINT_T
+                    type = TYPE_WIDE_CHAR;
+#else
+                    goto error;
+#endif
+                  else
+                    type = TYPE_CHAR;
+                  break;
+#if HAVE_WINT_T
+                case 'C':
+                  type = TYPE_WIDE_CHAR;
+                  c = 'c';
+                  break;
+#endif
+                case 's':
+                  if (flags >= 8)
+#if HAVE_WCHAR_T
+                    type = TYPE_WIDE_STRING;
+#else
+                    goto error;
+#endif
+                  else
+                    type = TYPE_STRING;
+                  break;
+#if HAVE_WCHAR_T
+                case 'S':
+                  type = TYPE_WIDE_STRING;
+                  c = 's';
+                  break;
+#endif
+                case 'p':
+                  type = TYPE_POINTER;
+                  break;
+                case 'n':
+                  /* If 'long long' is larger than 'long':  */
+                  if (flags >= 16 || (flags & 4))
+                    type = TYPE_COUNT_LONGLONGINT_POINTER;
+                  else
+                  /* If 'long long' is the same as 'long', we parse "lln" into
+                     TYPE_COUNT_LONGINT_POINTER.  */
+                  if (flags >= 8)
+                    type = TYPE_COUNT_LONGINT_POINTER;
+                  else if (flags & 2)
+                    type = TYPE_COUNT_SCHAR_POINTER;
+                  else if (flags & 1)
+                    type = TYPE_COUNT_SHORT_POINTER;
+                  else
+                    type = TYPE_COUNT_INT_POINTER;
+                  break;
+#if ENABLE_UNISTDIO
+                /* The unistdio extensions.  */
+                case 'U':
+                  if (flags >= 16)
+                    type = TYPE_U32_STRING;
+                  else if (flags >= 8)
+                    type = TYPE_U16_STRING;
+                  else
+                    type = TYPE_U8_STRING;
+                  break;
+#endif
+                case '%':
+                  type = TYPE_NONE;
+                  break;
+                default:
+                  /* Unknown conversion character.  */
+                  goto error;
+                }
+            }
+
+            if (type != TYPE_NONE)
+              {
+                dp->arg_index = arg_index;
+                if (dp->arg_index == ARG_NONE)
+                  {
+                    dp->arg_index = arg_posn++;
+                    if (dp->arg_index == ARG_NONE)
+                      /* arg_posn wrapped around.  */
+                      goto error;
+                  }
+                REGISTER_ARG (dp->arg_index, type);
+              }
+            dp->conversion = c;
+            dp->dir_end = cp;
+          }
+
+          d->count++;
+          if (d->count >= d_allocated)
+            {
+              size_t memory_size;
+              DIRECTIVE *memory;
+
+              d_allocated = xtimes (d_allocated, 2);
+              memory_size = xtimes (d_allocated, sizeof (DIRECTIVE));
+              if (size_overflow_p (memory_size))
+                /* Overflow, would lead to out of memory.  */
+                goto out_of_memory;
+              memory = (DIRECTIVE *) (d->dir != d->direct_alloc_dir
+                                      ? realloc (d->dir, memory_size)
+                                      : malloc (memory_size));
+              if (memory == NULL)
+                /* Out of memory.  */
+                goto out_of_memory;
+              if (d->dir == d->direct_alloc_dir)
+                memcpy (memory, d->dir, d->count * sizeof (DIRECTIVE));
+              d->dir = memory;
+            }
+        }
+#if CHAR_T_ONLY_ASCII
+      else if (!c_isascii (c))
+        {
+          /* Non-ASCII character.  Not supported.  */
+          goto error;
+        }
+#endif
+    }
+  d->dir[d->count].dir_start = cp;
+
+  d->max_width_length = max_width_length;
+  d->max_precision_length = max_precision_length;
+  return 0;
+
+error:
+  if (a->arg != a->direct_alloc_arg)
+    free (a->arg);
+  if (d->dir != d->direct_alloc_dir)
+    free (d->dir);
+  errno = EINVAL;
+  return -1;
+
+out_of_memory:
+  if (a->arg != a->direct_alloc_arg)
+    free (a->arg);
+  if (d->dir != d->direct_alloc_dir)
+    free (d->dir);
+  errno = ENOMEM;
+  return -1;
+}
+
+#undef PRINTF_PARSE
+#undef DIRECTIVES
+#undef DIRECTIVE
+#undef CHAR_T_ONLY_ASCII
+#undef CHAR_T
diff --git a/src/grep/gnulib-tests/printf-parse.h b/src/grep/gnulib-tests/printf-parse.h
new file mode 100644
index 0000000..77b7409
--- /dev/null
+++ b/src/grep/gnulib-tests/printf-parse.h
@@ -0,0 +1,193 @@
+/* Parse printf format string.
+   Copyright (C) 1999, 2002-2003, 2005, 2007, 2010-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _PRINTF_PARSE_H
+#define _PRINTF_PARSE_H
+
+/* This file can be parametrized with the following macros:
+     ENABLE_UNISTDIO    Set to 1 to enable the unistdio extensions.
+     STATIC             Set to 'static' to declare the function static.  */
+
+#if HAVE_FEATURES_H
+# include <features.h> /* for __GLIBC__, __UCLIBC__ */
+#endif
+
+#include "printf-args.h"
+
+
+/* Flags */
+#define FLAG_GROUP       1      /* ' flag */
+#define FLAG_LEFT        2      /* - flag */
+#define FLAG_SHOWSIGN    4      /* + flag */
+#define FLAG_SPACE       8      /* space flag */
+#define FLAG_ALT        16      /* # flag */
+#define FLAG_ZERO       32
+#if __GLIBC__ >= 2 && !defined __UCLIBC__
+# define FLAG_LOCALIZED 64      /* I flag, uses localized digits */
+#endif
+
+/* arg_index value indicating that no argument is consumed.  */
+#define ARG_NONE        (~(size_t)0)
+
+/* xxx_directive: A parsed directive.
+   xxx_directives: A parsed format string.  */
+
+/* Number of directly allocated directives (no malloc() needed).  */
+#define N_DIRECT_ALLOC_DIRECTIVES 7
+
+/* A parsed directive.  */
+typedef struct
+{
+  const char* dir_start;
+  const char* dir_end;
+  int flags;
+  const char* width_start;
+  const char* width_end;
+  size_t width_arg_index;
+  const char* precision_start;
+  const char* precision_end;
+  size_t precision_arg_index;
+  char conversion; /* d i o u x X f F e E g G a A c s p n U % but not C S */
+  size_t arg_index;
+}
+char_directive;
+
+/* A parsed format string.  */
+typedef struct
+{
+  size_t count;
+  char_directive *dir;
+  size_t max_width_length;
+  size_t max_precision_length;
+  char_directive direct_alloc_dir[N_DIRECT_ALLOC_DIRECTIVES];
+}
+char_directives;
+
+#if ENABLE_UNISTDIO
+
+/* A parsed directive.  */
+typedef struct
+{
+  const uint8_t* dir_start;
+  const uint8_t* dir_end;
+  int flags;
+  const uint8_t* width_start;
+  const uint8_t* width_end;
+  size_t width_arg_index;
+  const uint8_t* precision_start;
+  const uint8_t* precision_end;
+  size_t precision_arg_index;
+  uint8_t conversion; /* d i o u x X f F e E g G a A c s p n U % but not C S */
+  size_t arg_index;
+}
+u8_directive;
+
+/* A parsed format string.  */
+typedef struct
+{
+  size_t count;
+  u8_directive *dir;
+  size_t max_width_length;
+  size_t max_precision_length;
+  u8_directive direct_alloc_dir[N_DIRECT_ALLOC_DIRECTIVES];
+}
+u8_directives;
+
+/* A parsed directive.  */
+typedef struct
+{
+  const uint16_t* dir_start;
+  const uint16_t* dir_end;
+  int flags;
+  const uint16_t* width_start;
+  const uint16_t* width_end;
+  size_t width_arg_index;
+  const uint16_t* precision_start;
+  const uint16_t* precision_end;
+  size_t precision_arg_index;
+  uint16_t conversion; /* d i o u x X f F e E g G a A c s p n U % but not C S */
+  size_t arg_index;
+}
+u16_directive;
+
+/* A parsed format string.  */
+typedef struct
+{
+  size_t count;
+  u16_directive *dir;
+  size_t max_width_length;
+  size_t max_precision_length;
+  u16_directive direct_alloc_dir[N_DIRECT_ALLOC_DIRECTIVES];
+}
+u16_directives;
+
+/* A parsed directive.  */
+typedef struct
+{
+  const uint32_t* dir_start;
+  const uint32_t* dir_end;
+  int flags;
+  const uint32_t* width_start;
+  const uint32_t* width_end;
+  size_t width_arg_index;
+  const uint32_t* precision_start;
+  const uint32_t* precision_end;
+  size_t precision_arg_index;
+  uint32_t conversion; /* d i o u x X f F e E g G a A c s p n U % but not C S */
+  size_t arg_index;
+}
+u32_directive;
+
+/* A parsed format string.  */
+typedef struct
+{
+  size_t count;
+  u32_directive *dir;
+  size_t max_width_length;
+  size_t max_precision_length;
+  u32_directive direct_alloc_dir[N_DIRECT_ALLOC_DIRECTIVES];
+}
+u32_directives;
+
+#endif
+
+
+/* Parses the format string.  Fills in the number N of directives, and fills
+   in directives[0], ..., directives[N-1], and sets directives[N].dir_start
+   to the end of the format string.  Also fills in the arg_type fields of the
+   arguments and the needed count of arguments.  */
+#if ENABLE_UNISTDIO
+extern int
+       ulc_printf_parse (const char *format, char_directives *d, arguments *a);
+extern int
+       u8_printf_parse (const uint8_t *format, u8_directives *d, arguments *a);
+extern int
+       u16_printf_parse (const uint16_t *format, u16_directives *d,
+                         arguments *a);
+extern int
+       u32_printf_parse (const uint32_t *format, u32_directives *d,
+                         arguments *a);
+#else
+# ifdef STATIC
+STATIC
+# else
+extern
+# endif
+int printf_parse (const char *format, char_directives *d, arguments *a);
+#endif
+
+#endif /* _PRINTF_PARSE_H */
diff --git a/src/grep/gnulib-tests/pthread-thread.c b/src/grep/gnulib-tests/pthread-thread.c
new file mode 100644
index 0000000..6e603bc
--- /dev/null
+++ b/src/grep/gnulib-tests/pthread-thread.c
@@ -0,0 +1,178 @@
+/* Creating and controlling POSIX threads.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert, 2010, and Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <pthread.h>
+
+#if (defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS
+# include "windows-thread.h"
+#else
+# include <stdlib.h>
+#endif
+
+typedef void * (* pthread_main_function_t) (void *);
+
+#if ((defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS) || !HAVE_PTHREAD_H
+
+int
+pthread_attr_init (pthread_attr_t *attr)
+{
+  *attr = PTHREAD_CREATE_JOINABLE;
+  return 0;
+}
+
+int
+pthread_attr_getdetachstate (const pthread_attr_t *attr, int *detachstatep)
+{
+  *detachstatep = *attr & (PTHREAD_CREATE_JOINABLE | PTHREAD_CREATE_DETACHED);
+  return 0;
+}
+
+int
+pthread_attr_setdetachstate (pthread_attr_t *attr, int detachstate)
+{
+  if (!(detachstate == PTHREAD_CREATE_JOINABLE
+        || detachstate == PTHREAD_CREATE_DETACHED))
+    return EINVAL;
+  *attr ^= (*attr ^ detachstate)
+           & (PTHREAD_CREATE_JOINABLE | PTHREAD_CREATE_DETACHED);
+  return 0;
+}
+
+int
+pthread_attr_destroy (pthread_attr_t *attr _GL_UNUSED)
+{
+  return 0;
+}
+
+#endif
+
+#if (defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS
+/* Use Windows threads.  */
+
+int
+pthread_create (pthread_t *threadp, const pthread_attr_t *attr,
+                pthread_main_function_t mainfunc, void *arg)
+{
+  unsigned int glwthread_attr =
+    (attr != NULL
+     && (*attr & (PTHREAD_CREATE_JOINABLE | PTHREAD_CREATE_DETACHED))
+        != PTHREAD_CREATE_JOINABLE
+     ? GLWTHREAD_ATTR_DETACHED
+     : 0);
+  return glwthread_thread_create (threadp, glwthread_attr, mainfunc, arg);
+}
+
+pthread_t
+pthread_self (void)
+{
+  return glwthread_thread_self ();
+}
+
+int
+pthread_equal (pthread_t thread1, pthread_t thread2)
+{
+  return thread1 == thread2;
+}
+
+int
+pthread_detach (pthread_t thread)
+{
+  return glwthread_thread_detach (thread);
+}
+
+int
+pthread_join (pthread_t thread, void **valuep)
+{
+  return glwthread_thread_join (thread, valuep);
+}
+
+void
+pthread_exit (void *value)
+{
+  glwthread_thread_exit (value);
+}
+
+#elif HAVE_PTHREAD_H
+/* Provide workarounds for POSIX threads.  */
+
+# if PTHREAD_CREATE_IS_INLINE
+int
+pthread_create (pthread_t *threadp, const pthread_attr_t *attr,
+                pthread_main_function_t mainfunc, void *arg)
+#  undef pthread_create
+{
+  return pthread_create (threadp, attr, mainfunc, arg);
+}
+
+int
+pthread_attr_init (pthread_attr_t *attr)
+#  undef pthread_attr_init
+{
+  return pthread_attr_init (attr);
+}
+
+# endif
+
+#else
+/* Provide a dummy implementation for single-threaded applications.  */
+
+int
+pthread_create (pthread_t *threadp, const pthread_attr_t *attr,
+                pthread_main_function_t mainfunc, void *arg)
+{
+  /* The maximum number of threads is reached.  Do not create a thread.  */
+  return EAGAIN;
+}
+
+pthread_t
+pthread_self (void)
+{
+  return 42;
+}
+
+int
+pthread_equal (pthread_t thread1, pthread_t thread2)
+{
+  return thread1 == thread2;
+}
+
+int
+pthread_detach (pthread_t thread)
+{
+  /* There are no joinable threads.  */
+  return EINVAL;
+}
+
+int
+pthread_join (pthread_t thread, void **valuep)
+{
+  /* There are no joinable threads.  */
+  return EINVAL;
+}
+
+void
+pthread_exit (void *value)
+{
+  /* There is just one thread, so the process exits.  */
+  exit (0);
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/pthread.in.h b/src/grep/gnulib-tests/pthread.in.h
new file mode 100644
index 0000000..c4cd36c
--- /dev/null
+++ b/src/grep/gnulib-tests/pthread.in.h
@@ -0,0 +1,1963 @@
+/* Implement the most essential subset of POSIX 1003.1-2008 pthread.h.
+
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert, Glen Lenker, and Bruno Haible.  */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined _GL_ALREADY_INCLUDING_PTHREAD_H
+/* Special invocation convention:
+   On Android, we have a sequence of nested includes
+   <pthread.h> -> <time.h> -> <sys/time.h> -> <sys/select.h> ->
+   <signal.h> -> <pthread.h>.
+   In this situation, PTHREAD_COND_INITIALIZER is not yet defined,
+   therefore we should not attempt to define PTHREAD_MUTEX_NORMAL etc.  */
+
+#@INCLUDE_NEXT@ @NEXT_PTHREAD_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_PTHREAD_H_
+
+#if @HAVE_PTHREAD_H@
+
+# define _GL_ALREADY_INCLUDING_PTHREAD_H
+
+/* The include_next requires a split double-inclusion guard.  */
+# @INCLUDE_NEXT@ @NEXT_PTHREAD_H@
+
+# undef _GL_ALREADY_INCLUDING_PTHREAD_H
+
+#endif
+
+#ifndef _@GUARD_PREFIX@_PTHREAD_H_
+#define _@GUARD_PREFIX@_PTHREAD_H_
+
+#define __need_system_stdlib_h
+#include <stdlib.h>
+#undef __need_system_stdlib_h
+
+
+/* The pthreads-win32 <pthread.h> defines a couple of broken macros.  */
+#undef asctime_r
+#undef ctime_r
+#undef gmtime_r
+#undef localtime_r
+#undef rand_r
+#undef strtok_r
+
+#include <errno.h>
+#include <sched.h>
+#include <sys/types.h>
+#include <time.h>
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _Noreturn is copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+/* =========== Thread types and macros =========== */
+
+#if (defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS
+# if @GNULIB_PTHREAD_THREAD@
+#  include "windows-thread.h"
+#  if @HAVE_PTHREAD_T@
+#   define pthread_t rpl_pthread_t
+#   define pthread_attr_t rpl_pthread_attr_t
+#  endif
+#  if !GNULIB_defined_pthread_thread_types
+typedef glwthread_thread_t pthread_t;
+typedef unsigned int pthread_attr_t;
+#   define GNULIB_defined_pthread_thread_types 1
+#  endif
+# else
+#  if @HAVE_PTHREAD_T@
+#   define pthread_t rpl_pthread_t
+#   define pthread_attr_t rpl_pthread_attr_t
+#  endif
+#  if !GNULIB_defined_pthread_thread_types
+typedef int pthread_t;
+typedef unsigned int pthread_attr_t;
+#   define GNULIB_defined_pthread_thread_types 1
+#  endif
+# endif
+# undef PTHREAD_CREATE_JOINABLE
+# undef PTHREAD_CREATE_DETACHED
+# define PTHREAD_CREATE_JOINABLE 0
+# define PTHREAD_CREATE_DETACHED 1
+#else
+# if !@HAVE_PTHREAD_T@
+#  if !GNULIB_defined_pthread_thread_types
+typedef int pthread_t;
+typedef unsigned int pthread_attr_t;
+#   define GNULIB_defined_pthread_thread_types 1
+#  endif
+# endif
+# if !@HAVE_PTHREAD_CREATE_DETACHED@
+#  define PTHREAD_CREATE_JOINABLE 0
+#  define PTHREAD_CREATE_DETACHED 1
+# endif
+#endif
+
+/* =========== Once-only control (initialization) types and macros ========== */
+
+#if (defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS
+# if @GNULIB_PTHREAD_ONCE@
+#  include "windows-once.h"
+#  if @HAVE_PTHREAD_T@
+#   define pthread_once_t rpl_pthread_once_t
+#  endif
+#  if !GNULIB_defined_pthread_once_types
+typedef glwthread_once_t pthread_once_t;
+#   define GNULIB_defined_pthread_once_types 1
+#  endif
+#  undef PTHREAD_ONCE_INIT
+#  define PTHREAD_ONCE_INIT GLWTHREAD_ONCE_INIT
+# else
+#  if @HAVE_PTHREAD_T@
+#   define pthread_once_t rpl_pthread_once_t
+#  endif
+#  if !GNULIB_defined_pthread_once_types
+typedef int pthread_once_t;
+#   define GNULIB_defined_pthread_once_types 1
+#  endif
+#  undef PTHREAD_ONCE_INIT
+#  define PTHREAD_ONCE_INIT { 0 }
+# endif
+#else
+# if !@HAVE_PTHREAD_T@
+#  if !GNULIB_defined_pthread_once_types
+typedef int pthread_once_t;
+#   define GNULIB_defined_pthread_once_types 1
+#  endif
+#  undef PTHREAD_ONCE_INIT
+#  define PTHREAD_ONCE_INIT { 0 }
+# endif
+#endif
+
+/* =========== Mutex types and macros =========== */
+
+#if (defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS
+# if @GNULIB_PTHREAD_MUTEX@
+#  include "windows-timedmutex.h"
+#  include "windows-timedrecmutex.h"
+#  if @HAVE_PTHREAD_T@
+#   define pthread_mutex_t rpl_pthread_mutex_t
+#   define pthread_mutexattr_t rpl_pthread_mutexattr_t
+#  endif
+#  if !GNULIB_defined_pthread_mutex_types
+typedef struct
+        {
+          int type;
+          union
+            {
+              glwthread_timedmutex_t    u_timedmutex;
+              glwthread_timedrecmutex_t u_timedrecmutex;
+            }
+          u;
+        }
+        pthread_mutex_t;
+typedef unsigned int pthread_mutexattr_t;
+#   define GNULIB_defined_pthread_mutex_types 1
+#  endif
+#  undef PTHREAD_MUTEX_INITIALIZER
+#  define PTHREAD_MUTEX_INITIALIZER { 1, { GLWTHREAD_TIMEDMUTEX_INIT } }
+# else
+#  if @HAVE_PTHREAD_T@
+#   define pthread_mutex_t rpl_pthread_mutex_t
+#   define pthread_mutexattr_t rpl_pthread_mutexattr_t
+#  endif
+#  if !GNULIB_defined_pthread_mutex_types
+typedef int pthread_mutex_t;
+typedef unsigned int pthread_mutexattr_t;
+#   define GNULIB_defined_pthread_mutex_types 1
+#  endif
+#  undef PTHREAD_MUTEX_INITIALIZER
+#  define PTHREAD_MUTEX_INITIALIZER { 0 }
+# endif
+# undef PTHREAD_MUTEX_DEFAULT
+# undef PTHREAD_MUTEX_NORMAL
+# undef PTHREAD_MUTEX_ERRORCHECK
+# undef PTHREAD_MUTEX_RECURSIVE
+# define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL
+# define PTHREAD_MUTEX_NORMAL 0
+# define PTHREAD_MUTEX_ERRORCHECK 1
+# define PTHREAD_MUTEX_RECURSIVE 2
+# undef PTHREAD_MUTEX_STALLED
+# undef PTHREAD_MUTEX_ROBUST
+# define PTHREAD_MUTEX_STALLED 0
+# define PTHREAD_MUTEX_ROBUST 1
+#else
+# if !@HAVE_PTHREAD_T@
+#  if !GNULIB_defined_pthread_mutex_types
+typedef int pthread_mutex_t;
+typedef unsigned int pthread_mutexattr_t;
+#   define GNULIB_defined_pthread_mutex_types 1
+#  endif
+#  undef PTHREAD_MUTEX_INITIALIZER
+#  define PTHREAD_MUTEX_INITIALIZER { 0 }
+# endif
+# if !@HAVE_PTHREAD_MUTEX_RECURSIVE@
+#  define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL
+#  define PTHREAD_MUTEX_NORMAL 0
+#  define PTHREAD_MUTEX_ERRORCHECK 1
+#  define PTHREAD_MUTEX_RECURSIVE 2
+# endif
+# if !@HAVE_PTHREAD_MUTEX_ROBUST@
+#  define PTHREAD_MUTEX_STALLED 0
+#  define PTHREAD_MUTEX_ROBUST 1
+# endif
+#endif
+
+/* =========== Read-write lock types and macros =========== */
+
+#if (defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS
+# if @GNULIB_PTHREAD_RWLOCK@
+#  include "windows-timedrwlock.h"
+#  if @HAVE_PTHREAD_T@
+#   define pthread_rwlock_t rpl_pthread_rwlock_t
+#   define pthread_rwlockattr_t rpl_pthread_rwlockattr_t
+#  endif
+#  if !GNULIB_defined_pthread_rwlock_types
+typedef glwthread_timedrwlock_t pthread_rwlock_t;
+typedef unsigned int pthread_rwlockattr_t;
+#   define GNULIB_defined_pthread_rwlock_types 1
+#  endif
+#  undef PTHREAD_RWLOCK_INITIALIZER
+#  define PTHREAD_RWLOCK_INITIALIZER GLWTHREAD_TIMEDRWLOCK_INIT
+# else
+#  if @HAVE_PTHREAD_T@
+#   define pthread_rwlock_t rpl_pthread_rwlock_t
+#   define pthread_rwlockattr_t rpl_pthread_rwlockattr_t
+#  endif
+#  if !GNULIB_defined_pthread_rwlock_types
+typedef int pthread_rwlock_t;
+typedef unsigned int pthread_rwlockattr_t;
+#   define GNULIB_defined_pthread_rwlock_types 1
+#  endif
+#  undef PTHREAD_RWLOCK_INITIALIZER
+#  define PTHREAD_RWLOCK_INITIALIZER { 0 }
+# endif
+#elif @GNULIB_PTHREAD_RWLOCK@ && @REPLACE_PTHREAD_RWLOCK_INIT@ /* i.e. PTHREAD_RWLOCK_UNIMPLEMENTED */
+# if @HAVE_PTHREAD_T@
+#  define pthread_rwlock_t rpl_pthread_rwlock_t
+#  define pthread_rwlockattr_t rpl_pthread_rwlockattr_t
+# endif
+# if !GNULIB_defined_pthread_rwlock_types
+typedef struct
+        {
+          pthread_mutex_t lock; /* protects the remaining fields */
+          pthread_cond_t waiting_readers; /* waiting readers */
+          pthread_cond_t waiting_writers; /* waiting writers */
+          unsigned int waiting_writers_count; /* number of waiting writers */
+          int runcount; /* number of readers running, or -1 when a writer runs */
+        }
+        pthread_rwlock_t;
+typedef unsigned int pthread_rwlockattr_t;
+#  define GNULIB_defined_pthread_rwlock_types 1
+# endif
+# undef PTHREAD_RWLOCK_INITIALIZER
+# define PTHREAD_RWLOCK_INITIALIZER \
+   { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, PTHREAD_COND_INITIALIZER, 0, 0 }
+#else
+# if @HAVE_PTHREAD_T@
+#  if !defined PTHREAD_RWLOCK_INITIALIZER && defined PTHREAD_RWLOCK_INITIALIZER_NP /* z/OS */
+#   define PTHREAD_RWLOCK_INITIALIZER PTHREAD_RWLOCK_INITIALIZER_NP
+#  endif
+# else
+#  if !GNULIB_defined_pthread_rwlock_types
+typedef int pthread_rwlock_t;
+typedef unsigned int pthread_rwlockattr_t;
+#   define GNULIB_defined_pthread_rwlock_types 1
+#  endif
+#  undef PTHREAD_RWLOCK_INITIALIZER
+#  define PTHREAD_RWLOCK_INITIALIZER { 0 }
+# endif
+#endif
+
+/* =========== Condition variable types and macros =========== */
+
+#if (defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS
+# if @GNULIB_PTHREAD_COND@
+#  include "windows-cond.h"
+#  if @HAVE_PTHREAD_T@
+#   define pthread_cond_t rpl_pthread_cond_t
+#   define pthread_condattr_t rpl_pthread_condattr_t
+#  endif
+#  if !GNULIB_defined_pthread_cond_types
+typedef glwthread_cond_t pthread_cond_t;
+typedef unsigned int pthread_condattr_t;
+#   define GNULIB_defined_pthread_cond_types 1
+#  endif
+#  undef PTHREAD_COND_INITIALIZER
+#  define PTHREAD_COND_INITIALIZER GLWTHREAD_COND_INIT
+# else
+#  if @HAVE_PTHREAD_T@
+#   define pthread_cond_t rpl_pthread_cond_t
+#   define pthread_condattr_t rpl_pthread_condattr_t
+#  endif
+#  if !GNULIB_defined_pthread_cond_types
+typedef int pthread_cond_t;
+typedef unsigned int pthread_condattr_t;
+#   define GNULIB_defined_pthread_cond_types 1
+#  endif
+#  undef PTHREAD_COND_INITIALIZER
+#  define PTHREAD_COND_INITIALIZER { 0 }
+# endif
+#else
+# if !@HAVE_PTHREAD_T@
+#  if !GNULIB_defined_pthread_cond_types
+typedef int pthread_cond_t;
+typedef unsigned int pthread_condattr_t;
+#   define GNULIB_defined_pthread_cond_types 1
+#  endif
+#  undef PTHREAD_COND_INITIALIZER
+#  define PTHREAD_COND_INITIALIZER { 0 }
+# endif
+#endif
+
+/* =========== Thread-specific storage types and macros =========== */
+
+#if (defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS
+# if @GNULIB_PTHREAD_TSS@
+#  include "windows-tls.h"
+#  if @HAVE_PTHREAD_T@
+#   define pthread_key_t rpl_pthread_key_t
+#  endif
+#  if !GNULIB_defined_pthread_tss_types
+typedef glwthread_tls_key_t pthread_key_t;
+#   define GNULIB_defined_pthread_tss_types 1
+#  endif
+#  undef PTHREAD_DESTRUCTOR_ITERATIONS
+#  define PTHREAD_DESTRUCTOR_ITERATIONS GLWTHREAD_DESTRUCTOR_ITERATIONS
+# else
+#  if @HAVE_PTHREAD_T@
+#   define pthread_key_t rpl_pthread_key_t
+#  endif
+#  if !GNULIB_defined_pthread_tss_types
+typedef void ** pthread_key_t;
+#   define GNULIB_defined_pthread_tss_types 1
+#  endif
+#  undef PTHREAD_DESTRUCTOR_ITERATIONS
+#  define PTHREAD_DESTRUCTOR_ITERATIONS 0
+# endif
+#else
+# if !@HAVE_PTHREAD_T@
+#  if !GNULIB_defined_pthread_tss_types
+typedef void ** pthread_key_t;
+#   define GNULIB_defined_pthread_tss_types 1
+#  endif
+#  undef PTHREAD_DESTRUCTOR_ITERATIONS
+#  define PTHREAD_DESTRUCTOR_ITERATIONS 0
+# endif
+#endif
+
+/* =========== Spinlock types and macros =========== */
+
+#if (defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS
+# if @GNULIB_PTHREAD_SPIN@
+#  include "windows-spin.h"
+#  if @HAVE_PTHREAD_T@
+#   define pthread_spinlock_t rpl_pthread_spinlock_t
+#  endif
+#  if !GNULIB_defined_pthread_spin_types
+typedef glwthread_spinlock_t pthread_spinlock_t;
+#   define GNULIB_defined_pthread_spin_types 1
+#  endif
+# else
+#  if @HAVE_PTHREAD_T@
+#   define pthread_spinlock_t rpl_pthread_spinlock_t
+#  endif
+#  if !GNULIB_defined_pthread_spin_types
+typedef pthread_mutex_t pthread_spinlock_t;
+#   define GNULIB_defined_pthread_spin_types 1
+#  endif
+# endif
+# undef PTHREAD_PROCESS_PRIVATE
+# undef PTHREAD_PROCESS_SHARED
+# define PTHREAD_PROCESS_PRIVATE 0
+# define PTHREAD_PROCESS_SHARED 1
+#else
+# if !@HAVE_PTHREAD_SPINLOCK_T@
+/* Approximate spinlocks with mutexes.  */
+#  if !GNULIB_defined_pthread_spin_types
+typedef pthread_mutex_t pthread_spinlock_t;
+#   define GNULIB_defined_pthread_spin_types 1
+#  endif
+# endif
+# if !@HAVE_PTHREAD_PROCESS_SHARED@
+#  define PTHREAD_PROCESS_PRIVATE 0
+#  define PTHREAD_PROCESS_SHARED 1
+# endif
+#endif
+
+/* =========== Other types and macros =========== */
+
+#if !@HAVE_PTHREAD_T@
+# if !GNULIB_defined_other_pthread_types
+typedef int pthread_barrier_t;
+typedef unsigned int pthread_barrierattr_t;
+#  define GNULIB_defined_other_pthread_types 1
+# endif
+#endif
+
+#if !defined PTHREAD_CANCELED
+
+# define PTHREAD_BARRIER_SERIAL_THREAD (-1)
+
+# define PTHREAD_CANCEL_DEFERRED 0
+# define PTHREAD_CANCEL_ASYNCHRONOUS 1
+
+# define PTHREAD_CANCEL_ENABLE 0
+# define PTHREAD_CANCEL_DISABLE 1
+
+# define PTHREAD_CANCELED ((void *) -1)
+
+# define PTHREAD_INHERIT_SCHED 0
+# define PTHREAD_EXPLICIT_SCHED 1
+
+# define PTHREAD_PRIO_NONE 0
+# define PTHREAD_PRIO_INHERIT 1
+# define PTHREAD_PRIO_PROTECT 2
+
+# define PTHREAD_SCOPE_SYSTEM 0
+# define PTHREAD_SCOPE_PROCESS 1
+
+#endif
+
+/* =========== Thread functions =========== */
+
+#if @GNULIB_PTHREAD_THREAD@
+/* The 'restrict' qualifier on ARG is nonsense, but POSIX specifies it this way.
+   Sigh.  */
+# if @REPLACE_PTHREAD_CREATE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_create
+#   define pthread_create rpl_pthread_create
+#  endif
+_GL_FUNCDECL_RPL (pthread_create, int,
+                  (pthread_t *restrict threadp,
+                   const pthread_attr_t *restrict attr,
+                   void * (*mainfunc) (void *), void *restrict arg)
+                  _GL_ARG_NONNULL ((1, 3)));
+_GL_CXXALIAS_RPL (pthread_create, int,
+                  (pthread_t *restrict threadp,
+                   const pthread_attr_t *restrict attr,
+                   void * (*mainfunc) (void *), void *restrict arg));
+# else
+#  if !@HAVE_PTHREAD_CREATE@
+_GL_FUNCDECL_SYS (pthread_create, int,
+                  (pthread_t *restrict threadp,
+                   const pthread_attr_t *restrict attr,
+                   void * (*mainfunc) (void *), void *restrict arg)
+                  _GL_ARG_NONNULL ((1, 3)));
+#  endif
+_GL_CXXALIAS_SYS_CAST (pthread_create, int,
+                       (pthread_t *restrict threadp,
+                        const pthread_attr_t *restrict attr,
+                        void * (*mainfunc) (void *), void *restrict arg));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_create);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_create
+# if HAVE_RAW_DECL_PTHREAD_CREATE
+_GL_WARN_ON_USE (pthread_create, "pthread_create is not portable - "
+                 "use gnulib module pthread-thread for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_THREAD@
+# if @REPLACE_PTHREAD_ATTR_INIT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_attr_init
+#   define pthread_attr_init rpl_pthread_attr_init
+#  endif
+_GL_FUNCDECL_RPL (pthread_attr_init, int, (pthread_attr_t *attr)
+                                          _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_attr_init, int, (pthread_attr_t *attr));
+# else
+#  if !@HAVE_PTHREAD_ATTR_INIT@
+_GL_FUNCDECL_SYS (pthread_attr_init, int, (pthread_attr_t *attr)
+                                          _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_attr_init, int, (pthread_attr_t *attr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_attr_init);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_attr_init
+# if HAVE_RAW_DECL_PTHREAD_ATTR_INIT
+_GL_WARN_ON_USE (pthread_attr_init, "pthread_attr_init is not portable - "
+                 "use gnulib module pthread-thread for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_THREAD@
+# if @REPLACE_PTHREAD_ATTR_GETDETACHSTATE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_attr_getdetachstate
+#   define pthread_attr_getdetachstate rpl_pthread_attr_getdetachstate
+#  endif
+_GL_FUNCDECL_RPL (pthread_attr_getdetachstate, int,
+                  (const pthread_attr_t *attr, int *detachstatep)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (pthread_attr_getdetachstate, int,
+                  (const pthread_attr_t *attr, int *detachstatep));
+# else
+#  if !@HAVE_PTHREAD_ATTR_GETDETACHSTATE@
+_GL_FUNCDECL_SYS (pthread_attr_getdetachstate, int,
+                  (const pthread_attr_t *attr, int *detachstatep)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_attr_getdetachstate, int,
+                  (const pthread_attr_t *attr, int *detachstatep));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_attr_getdetachstate);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_attr_getdetachstate
+# if HAVE_RAW_DECL_PTHREAD_ATTR_GETDETACHSTATE
+_GL_WARN_ON_USE (pthread_attr_getdetachstate, "pthread_attr_getdetachstate is not portable - "
+                 "use gnulib module pthread-thread for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_THREAD@
+# if @REPLACE_PTHREAD_ATTR_SETDETACHSTATE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_attr_setdetachstate
+#   define pthread_attr_setdetachstate rpl_pthread_attr_setdetachstate
+#  endif
+_GL_FUNCDECL_RPL (pthread_attr_setdetachstate, int,
+                  (pthread_attr_t *attr, int detachstate)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_attr_setdetachstate, int,
+                  (pthread_attr_t *attr, int detachstate));
+# else
+#  if !@HAVE_PTHREAD_ATTR_SETDETACHSTATE@
+_GL_FUNCDECL_SYS (pthread_attr_setdetachstate, int,
+                  (pthread_attr_t *attr, int detachstate)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_attr_setdetachstate, int,
+                  (pthread_attr_t *attr, int detachstate));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_attr_setdetachstate);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_attr_setdetachstate
+# if HAVE_RAW_DECL_PTHREAD_ATTR_SETDETACHSTATE
+_GL_WARN_ON_USE (pthread_attr_setdetachstate, "pthread_attr_setdetachstate is not portable - "
+                 "use gnulib module pthread-thread for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_THREAD@
+# if @REPLACE_PTHREAD_ATTR_DESTROY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_attr_destroy
+#   define pthread_attr_destroy rpl_pthread_attr_destroy
+#  endif
+_GL_FUNCDECL_RPL (pthread_attr_destroy, int, (pthread_attr_t *attr)
+                                             _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_attr_destroy, int, (pthread_attr_t *attr));
+# else
+#  if !@HAVE_PTHREAD_ATTR_DESTROY@
+_GL_FUNCDECL_SYS (pthread_attr_destroy, int, (pthread_attr_t *attr)
+                                             _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_attr_destroy, int, (pthread_attr_t *attr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_attr_destroy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_attr_destroy
+# if HAVE_RAW_DECL_PTHREAD_ATTR_DESTROY
+_GL_WARN_ON_USE (pthread_attr_destroy, "pthread_attr_destroy is not portable - "
+                 "use gnulib module pthread-thread for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_THREAD@
+# if @REPLACE_PTHREAD_SELF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_self
+#   define pthread_self rpl_pthread_self
+#  endif
+_GL_FUNCDECL_RPL (pthread_self, pthread_t, (void) _GL_ATTRIBUTE_PURE);
+_GL_CXXALIAS_RPL (pthread_self, pthread_t, (void));
+# else
+#  if !@HAVE_PTHREAD_SELF@
+_GL_FUNCDECL_SYS (pthread_self, pthread_t, (void) _GL_ATTRIBUTE_PURE);
+#  endif
+_GL_CXXALIAS_SYS (pthread_self, pthread_t, (void));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_self);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_self
+# if HAVE_RAW_DECL_PTHREAD_SELF
+_GL_WARN_ON_USE (pthread_self, "pthread_self is not portable - "
+                 "use gnulib module pthread-thread for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_THREAD@
+# if @REPLACE_PTHREAD_EQUAL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_equal
+#   define pthread_equal rpl_pthread_equal
+#  endif
+_GL_FUNCDECL_RPL (pthread_equal, int, (pthread_t thread1, pthread_t thread2));
+_GL_CXXALIAS_RPL (pthread_equal, int, (pthread_t thread1, pthread_t thread2));
+# else
+#  if !@HAVE_PTHREAD_EQUAL@
+_GL_FUNCDECL_SYS (pthread_equal, int, (pthread_t thread1, pthread_t thread2));
+#  endif
+_GL_CXXALIAS_SYS (pthread_equal, int, (pthread_t thread1, pthread_t thread2));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_equal);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_equal
+# if HAVE_RAW_DECL_PTHREAD_EQUAL
+_GL_WARN_ON_USE (pthread_equal, "pthread_equal is not portable - "
+                 "use gnulib module pthread-thread for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_THREAD@
+# if @REPLACE_PTHREAD_DETACH@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_detach
+#   define pthread_detach rpl_pthread_detach
+#  endif
+_GL_FUNCDECL_RPL (pthread_detach, int, (pthread_t thread));
+_GL_CXXALIAS_RPL (pthread_detach, int, (pthread_t thread));
+# else
+#  if !@HAVE_PTHREAD_DETACH@
+_GL_FUNCDECL_SYS (pthread_detach, int, (pthread_t thread));
+#  endif
+_GL_CXXALIAS_SYS (pthread_detach, int, (pthread_t thread));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_detach);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_detach
+# if HAVE_RAW_DECL_PTHREAD_DETACH
+_GL_WARN_ON_USE (pthread_detach, "pthread_detach is not portable - "
+                 "use gnulib module pthread-thread for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_THREAD@
+# if @REPLACE_PTHREAD_JOIN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_join
+#   define pthread_join rpl_pthread_join
+#  endif
+_GL_FUNCDECL_RPL (pthread_join, int, (pthread_t thread, void **valuep));
+_GL_CXXALIAS_RPL (pthread_join, int, (pthread_t thread, void **valuep));
+# else
+#  if !@HAVE_PTHREAD_JOIN@
+_GL_FUNCDECL_SYS (pthread_join, int, (pthread_t thread, void **valuep));
+#  endif
+_GL_CXXALIAS_SYS (pthread_join, int, (pthread_t thread, void **valuep));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_join);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_join
+# if HAVE_RAW_DECL_PTHREAD_JOIN
+_GL_WARN_ON_USE (pthread_join, "pthread_join is not portable - "
+                 "use gnulib module pthread-thread for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_THREAD@
+# if @REPLACE_PTHREAD_EXIT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_exit
+#   define pthread_exit rpl_pthread_exit
+#  endif
+_GL_FUNCDECL_RPL (pthread_exit, _Noreturn void, (void *value));
+_GL_CXXALIAS_RPL (pthread_exit, void, (void *value));
+# else
+#  if !@HAVE_PTHREAD_EXIT@
+_GL_FUNCDECL_SYS (pthread_exit, _Noreturn void, (void *value));
+#  endif
+/* Need to cast because of AIX with xlclang++.  */
+_GL_CXXALIAS_SYS_CAST (pthread_exit, void, (void *value));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_exit);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_exit
+# if HAVE_RAW_DECL_PTHREAD_EXIT
+_GL_WARN_ON_USE (pthread_exit, "pthread_exit is not portable - "
+                 "use gnulib module pthread-thread for portability");
+# endif
+#endif
+
+/* =========== Once-only control (initialization) functions =========== */
+
+#if @GNULIB_PTHREAD_ONCE@
+# if @REPLACE_PTHREAD_ONCE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_once
+#   define pthread_once rpl_pthread_once
+#  endif
+_GL_FUNCDECL_RPL (pthread_once, int,
+                  (pthread_once_t *once_control, void (*initfunction) (void))
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (pthread_once, int,
+                  (pthread_once_t *once_control, void (*initfunction) (void)));
+# else
+#  if !@HAVE_PTHREAD_ONCE@
+_GL_FUNCDECL_SYS (pthread_once, int,
+                  (pthread_once_t *once_control, void (*initfunction) (void))
+                   _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS_CAST (pthread_once, int,
+                       (pthread_once_t *once_control,
+                        void (*initfunction) (void)));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_once);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_once
+# if HAVE_RAW_DECL_PTHREAD_ONCE
+_GL_WARN_ON_USE (pthread_once, "pthread_once is not portable - "
+                 "use gnulib module pthread-once for portability");
+# endif
+#endif
+
+/* =========== Mutex functions =========== */
+
+#if @GNULIB_PTHREAD_MUTEX@
+# if @REPLACE_PTHREAD_MUTEX_INIT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_mutex_init
+#   define pthread_mutex_init rpl_pthread_mutex_init
+#  endif
+_GL_FUNCDECL_RPL (pthread_mutex_init, int,
+                  (pthread_mutex_t *restrict mutex,
+                   const pthread_mutexattr_t *restrict attr)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_mutex_init, int,
+                  (pthread_mutex_t *restrict mutex,
+                   const pthread_mutexattr_t *restrict attr));
+# else
+#  if !@HAVE_PTHREAD_MUTEX_INIT@
+_GL_FUNCDECL_SYS (pthread_mutex_init, int,
+                  (pthread_mutex_t *restrict mutex,
+                   const pthread_mutexattr_t *restrict attr)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_mutex_init, int,
+                  (pthread_mutex_t *restrict mutex,
+                   const pthread_mutexattr_t *restrict attr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_mutex_init);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_mutex_init
+# if HAVE_RAW_DECL_PTHREAD_MUTEX_INIT
+_GL_WARN_ON_USE (pthread_mutex_init, "pthread_mutex_init is not portable - "
+                 "use gnulib module pthread-mutex for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_MUTEX@
+# if @REPLACE_PTHREAD_MUTEXATTR_INIT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_mutexattr_init
+#   define pthread_mutexattr_init rpl_pthread_mutexattr_init
+#  endif
+_GL_FUNCDECL_RPL (pthread_mutexattr_init, int, (pthread_mutexattr_t *attr)
+                                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_mutexattr_init, int, (pthread_mutexattr_t *attr));
+# else
+#  if !@HAVE_PTHREAD_MUTEXATTR_INIT@
+_GL_FUNCDECL_SYS (pthread_mutexattr_init, int, (pthread_mutexattr_t *attr)
+                                               _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_mutexattr_init, int, (pthread_mutexattr_t *attr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_mutexattr_init);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_mutexattr_init
+# if HAVE_RAW_DECL_PTHREAD_MUTEXATTR_INIT
+_GL_WARN_ON_USE (pthread_mutexattr_init, "pthread_mutexattr_init is not portable - "
+                 "use gnulib module pthread-mutex for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_MUTEX@
+# if @REPLACE_PTHREAD_MUTEXATTR_GETTYPE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_mutexattr_gettype
+#   define pthread_mutexattr_gettype rpl_pthread_mutexattr_gettype
+#  endif
+_GL_FUNCDECL_RPL (pthread_mutexattr_gettype, int,
+                  (const pthread_mutexattr_t *restrict attr,
+                   int *restrict typep)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (pthread_mutexattr_gettype, int,
+                  (const pthread_mutexattr_t *restrict attr,
+                   int *restrict typep));
+# else
+#  if !@HAVE_PTHREAD_MUTEXATTR_GETTYPE@
+_GL_FUNCDECL_SYS (pthread_mutexattr_gettype, int,
+                  (const pthread_mutexattr_t *restrict attr,
+                   int *restrict typep)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+/* Need to cast, because on FreeBSD the first parameter is
+                        pthread_mutexattr_t *attr.  */
+_GL_CXXALIAS_SYS_CAST (pthread_mutexattr_gettype, int,
+                       (const pthread_mutexattr_t *restrict attr,
+                        int *restrict typep));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_mutexattr_gettype);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_mutexattr_gettype
+# if HAVE_RAW_DECL_PTHREAD_MUTEXATTR_GETTYPE
+_GL_WARN_ON_USE (pthread_mutexattr_gettype, "pthread_mutexattr_gettype is not portable - "
+                 "use gnulib module pthread-mutex for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_MUTEX@
+# if @REPLACE_PTHREAD_MUTEXATTR_SETTYPE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_mutexattr_settype
+#   define pthread_mutexattr_settype rpl_pthread_mutexattr_settype
+#  endif
+_GL_FUNCDECL_RPL (pthread_mutexattr_settype, int,
+                  (pthread_mutexattr_t *attr, int type) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_mutexattr_settype, int,
+                  (pthread_mutexattr_t *attr, int type));
+# else
+#  if !@HAVE_PTHREAD_MUTEXATTR_SETTYPE@
+_GL_FUNCDECL_SYS (pthread_mutexattr_settype, int,
+                  (pthread_mutexattr_t *attr, int type) _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_mutexattr_settype, int,
+                  (pthread_mutexattr_t *attr, int type));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_mutexattr_settype);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_mutexattr_settype
+# if HAVE_RAW_DECL_PTHREAD_MUTEXATTR_SETTYPE
+_GL_WARN_ON_USE (pthread_mutexattr_settype, "pthread_mutexattr_settype is not portable - "
+                 "use gnulib module pthread-mutex for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_MUTEX@
+# if @REPLACE_PTHREAD_MUTEXATTR_GETROBUST@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_mutexattr_getrobust
+#   define pthread_mutexattr_getrobust rpl_pthread_mutexattr_getrobust
+#  endif
+_GL_FUNCDECL_RPL (pthread_mutexattr_getrobust, int,
+                  (const pthread_mutexattr_t *restrict attr,
+                   int *restrict robustp)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (pthread_mutexattr_getrobust, int,
+                  (const pthread_mutexattr_t *restrict attr,
+                   int *restrict robustp));
+# else
+#  if !@HAVE_PTHREAD_MUTEXATTR_GETROBUST@
+_GL_FUNCDECL_SYS (pthread_mutexattr_getrobust, int,
+                  (const pthread_mutexattr_t *restrict attr,
+                   int *restrict robustp)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+/* Need to cast, because on FreeBSD the first parameter is
+                        pthread_mutexattr_t *attr.  */
+_GL_CXXALIAS_SYS_CAST (pthread_mutexattr_getrobust, int,
+                       (const pthread_mutexattr_t *restrict attr,
+                        int *restrict robustp));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_mutexattr_getrobust);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_mutexattr_getrobust
+# if HAVE_RAW_DECL_PTHREAD_MUTEXATTR_GETROBUST
+_GL_WARN_ON_USE (pthread_mutexattr_getrobust, "pthread_mutexattr_getrobust is not portable - "
+                 "use gnulib module pthread-mutex for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_MUTEX@
+# if @REPLACE_PTHREAD_MUTEXATTR_SETROBUST@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_mutexattr_setrobust
+#   define pthread_mutexattr_setrobust rpl_pthread_mutexattr_setrobust
+#  endif
+_GL_FUNCDECL_RPL (pthread_mutexattr_setrobust, int,
+                  (pthread_mutexattr_t *attr, int robust)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_mutexattr_setrobust, int,
+                  (pthread_mutexattr_t *attr, int robust));
+# else
+#  if !@HAVE_PTHREAD_MUTEXATTR_SETROBUST@
+_GL_FUNCDECL_SYS (pthread_mutexattr_setrobust, int,
+                  (pthread_mutexattr_t *attr, int robust)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_mutexattr_setrobust, int,
+                  (pthread_mutexattr_t *attr, int robust));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_mutexattr_setrobust);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_mutexattr_setrobust
+# if HAVE_RAW_DECL_PTHREAD_MUTEXATTR_SETROBUST
+_GL_WARN_ON_USE (pthread_mutexattr_setrobust, "pthread_mutexattr_setrobust is not portable - "
+                 "use gnulib module pthread-mutex for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_MUTEX@
+# if @REPLACE_PTHREAD_MUTEXATTR_DESTROY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_mutexattr_destroy
+#   define pthread_mutexattr_destroy rpl_pthread_mutexattr_destroy
+#  endif
+_GL_FUNCDECL_RPL (pthread_mutexattr_destroy, int, (pthread_mutexattr_t *attr)
+                                                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_mutexattr_destroy, int, (pthread_mutexattr_t *attr));
+# else
+#  if !@HAVE_PTHREAD_MUTEXATTR_DESTROY@
+_GL_FUNCDECL_SYS (pthread_mutexattr_destroy, int, (pthread_mutexattr_t *attr)
+                                                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_mutexattr_destroy, int, (pthread_mutexattr_t *attr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_mutexattr_destroy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_mutexattr_destroy
+# if HAVE_RAW_DECL_PTHREAD_MUTEXATTR_DESTROY
+_GL_WARN_ON_USE (pthread_mutexattr_destroy, "pthread_mutexattr_destroy is not portable - "
+                 "use gnulib module pthread-mutex for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_MUTEX@
+# if @REPLACE_PTHREAD_MUTEX_LOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_mutex_lock
+#   define pthread_mutex_lock rpl_pthread_mutex_lock
+#  endif
+_GL_FUNCDECL_RPL (pthread_mutex_lock, int, (pthread_mutex_t *mutex)
+                                           _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_mutex_lock, int, (pthread_mutex_t *mutex));
+# else
+#  if !@HAVE_PTHREAD_MUTEX_LOCK@
+_GL_FUNCDECL_SYS (pthread_mutex_lock, int, (pthread_mutex_t *mutex)
+                                           _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_mutex_lock, int, (pthread_mutex_t *mutex));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_mutex_lock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_mutex_lock
+# if HAVE_RAW_DECL_PTHREAD_MUTEX_LOCK
+_GL_WARN_ON_USE (pthread_mutex_lock, "pthread_mutex_lock is not portable - "
+                 "use gnulib module pthread-mutex for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_MUTEX@
+# if @REPLACE_PTHREAD_MUTEX_TRYLOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_mutex_trylock
+#   define pthread_mutex_trylock rpl_pthread_mutex_trylock
+#  endif
+_GL_FUNCDECL_RPL (pthread_mutex_trylock, int, (pthread_mutex_t *mutex)
+                                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_mutex_trylock, int, (pthread_mutex_t *mutex));
+# else
+#  if !@HAVE_PTHREAD_MUTEX_TRYLOCK@
+_GL_FUNCDECL_SYS (pthread_mutex_trylock, int, (pthread_mutex_t *mutex)
+                                              _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_mutex_trylock, int, (pthread_mutex_t *mutex));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_mutex_trylock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_mutex_trylock
+# if HAVE_RAW_DECL_PTHREAD_MUTEX_TRYLOCK
+_GL_WARN_ON_USE (pthread_mutex_trylock, "pthread_mutex_trylock is not portable - "
+                 "use gnulib module pthread-mutex for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_MUTEX_TIMEDLOCK@
+# if @REPLACE_PTHREAD_MUTEX_TIMEDLOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_mutex_timedlock
+#   define pthread_mutex_timedlock rpl_pthread_mutex_timedlock
+#  endif
+_GL_FUNCDECL_RPL (pthread_mutex_timedlock, int,
+                  (pthread_mutex_t *restrict mutex,
+                   const struct timespec *restrict abstime)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (pthread_mutex_timedlock, int,
+                  (pthread_mutex_t *restrict mutex,
+                   const struct timespec *restrict abstime));
+# else
+#  if !@HAVE_PTHREAD_MUTEX_TIMEDLOCK@
+_GL_FUNCDECL_SYS (pthread_mutex_timedlock, int,
+                  (pthread_mutex_t *restrict mutex,
+                   const struct timespec *restrict abstime)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_mutex_timedlock, int,
+                  (pthread_mutex_t *restrict mutex,
+                   const struct timespec *restrict abstime));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_mutex_timedlock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_mutex_timedlock
+# if HAVE_RAW_DECL_PTHREAD_MUTEX_TIMEDLOCK
+_GL_WARN_ON_USE (pthread_mutex_timedlock, "pthread_mutex_timedlock is not portable - "
+                 "use gnulib module pthread_mutex_timedlock for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_MUTEX@
+# if @REPLACE_PTHREAD_MUTEX_UNLOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_mutex_unlock
+#   define pthread_mutex_unlock rpl_pthread_mutex_unlock
+#  endif
+_GL_FUNCDECL_RPL (pthread_mutex_unlock, int, (pthread_mutex_t *mutex)
+                                             _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_mutex_unlock, int, (pthread_mutex_t *mutex));
+# else
+#  if !@HAVE_PTHREAD_MUTEX_UNLOCK@
+_GL_FUNCDECL_SYS (pthread_mutex_unlock, int, (pthread_mutex_t *mutex)
+                                             _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_mutex_unlock, int, (pthread_mutex_t *mutex));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_mutex_unlock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_mutex_unlock
+# if HAVE_RAW_DECL_PTHREAD_MUTEX_UNLOCK
+_GL_WARN_ON_USE (pthread_mutex_unlock, "pthread_mutex_unlock is not portable - "
+                 "use gnulib module pthread-mutex for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_MUTEX@
+# if @REPLACE_PTHREAD_MUTEX_DESTROY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_mutex_destroy
+#   define pthread_mutex_destroy rpl_pthread_mutex_destroy
+#  endif
+_GL_FUNCDECL_RPL (pthread_mutex_destroy, int, (pthread_mutex_t *mutex)
+                                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_mutex_destroy, int, (pthread_mutex_t *mutex));
+# else
+#  if !@HAVE_PTHREAD_MUTEX_DESTROY@
+_GL_FUNCDECL_SYS (pthread_mutex_destroy, int, (pthread_mutex_t *mutex)
+                                              _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_mutex_destroy, int, (pthread_mutex_t *mutex));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_mutex_destroy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_mutex_destroy
+# if HAVE_RAW_DECL_PTHREAD_MUTEX_DESTROY
+_GL_WARN_ON_USE (pthread_mutex_destroy, "pthread_mutex_destroy is not portable - "
+                 "use gnulib module pthread-mutex for portability");
+# endif
+#endif
+
+/* =========== Read-write lock functions =========== */
+
+#if @GNULIB_PTHREAD_RWLOCK@
+# if @REPLACE_PTHREAD_RWLOCK_INIT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_rwlock_init
+#   define pthread_rwlock_init rpl_pthread_rwlock_init
+#  endif
+_GL_FUNCDECL_RPL (pthread_rwlock_init, int,
+                  (pthread_rwlock_t *restrict lock,
+                   const pthread_rwlockattr_t *restrict attr)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_rwlock_init, int,
+                  (pthread_rwlock_t *restrict lock,
+                   const pthread_rwlockattr_t *restrict attr));
+# else
+#  if !@HAVE_PTHREAD_RWLOCK_INIT@
+_GL_FUNCDECL_SYS (pthread_rwlock_init, int,
+                  (pthread_rwlock_t *restrict lock,
+                   const pthread_rwlockattr_t *restrict attr)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_rwlock_init, int,
+                  (pthread_rwlock_t *restrict lock,
+                   const pthread_rwlockattr_t *restrict attr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_rwlock_init);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_rwlock_init
+# if HAVE_RAW_DECL_PTHREAD_RWLOCK_INIT
+_GL_WARN_ON_USE (pthread_rwlock_init, "pthread_rwlock_init is not portable - "
+                 "use gnulib module pthread-rwlock for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_RWLOCK@
+# if @REPLACE_PTHREAD_RWLOCKATTR_INIT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_rwlockattr_init
+#   define pthread_rwlockattr_init rpl_pthread_rwlockattr_init
+#  endif
+_GL_FUNCDECL_RPL (pthread_rwlockattr_init, int, (pthread_rwlockattr_t *attr)
+                                                _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_rwlockattr_init, int, (pthread_rwlockattr_t *attr));
+# else
+#  if !@HAVE_PTHREAD_RWLOCKATTR_INIT@
+_GL_FUNCDECL_SYS (pthread_rwlockattr_init, int, (pthread_rwlockattr_t *attr)
+                                                _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_rwlockattr_init, int, (pthread_rwlockattr_t *attr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_rwlockattr_init);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_rwlockattr_init
+# if HAVE_RAW_DECL_PTHREAD_RWLOCKATTR_INIT
+_GL_WARN_ON_USE (pthread_rwlockattr_init, "pthread_rwlockattr_init is not portable - "
+                 "use gnulib module pthread-rwlock for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_RWLOCK@
+# if @REPLACE_PTHREAD_RWLOCKATTR_DESTROY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_rwlockattr_destroy
+#   define pthread_rwlockattr_destroy rpl_pthread_rwlockattr_destroy
+#  endif
+_GL_FUNCDECL_RPL (pthread_rwlockattr_destroy, int,
+                  (pthread_rwlockattr_t *attr) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_rwlockattr_destroy, int,
+                  (pthread_rwlockattr_t *attr));
+# else
+#  if !@HAVE_PTHREAD_RWLOCKATTR_DESTROY@
+_GL_FUNCDECL_SYS (pthread_rwlockattr_destroy, int,
+                  (pthread_rwlockattr_t *attr) _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_rwlockattr_destroy, int,
+                  (pthread_rwlockattr_t *attr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_rwlockattr_destroy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_rwlockattr_destroy
+# if HAVE_RAW_DECL_PTHREAD_RWLOCKATTR_DESTROY
+_GL_WARN_ON_USE (pthread_rwlockattr_destroy, "pthread_rwlockattr_destroy is not portable - "
+                 "use gnulib module pthread-rwlock for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_RWLOCK@
+# if @REPLACE_PTHREAD_RWLOCK_RDLOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_rwlock_rdlock
+#   define pthread_rwlock_rdlock rpl_pthread_rwlock_rdlock
+#  endif
+_GL_FUNCDECL_RPL (pthread_rwlock_rdlock, int, (pthread_rwlock_t *lock)
+                                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_rwlock_rdlock, int, (pthread_rwlock_t *lock));
+# else
+#  if !@HAVE_PTHREAD_RWLOCK_RDLOCK@
+_GL_FUNCDECL_SYS (pthread_rwlock_rdlock, int, (pthread_rwlock_t *lock)
+                                              _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_rwlock_rdlock, int, (pthread_rwlock_t *lock));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_rwlock_rdlock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_rwlock_rdlock
+# if HAVE_RAW_DECL_PTHREAD_RWLOCK_RDLOCK
+_GL_WARN_ON_USE (pthread_rwlock_rdlock, "pthread_rwlock_rdlock is not portable - "
+                 "use gnulib module pthread-rwlock for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_RWLOCK@
+# if @REPLACE_PTHREAD_RWLOCK_WRLOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_rwlock_wrlock
+#   define pthread_rwlock_wrlock rpl_pthread_rwlock_wrlock
+#  endif
+_GL_FUNCDECL_RPL (pthread_rwlock_wrlock, int, (pthread_rwlock_t *lock)
+                                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_rwlock_wrlock, int, (pthread_rwlock_t *lock));
+# else
+#  if !@HAVE_PTHREAD_RWLOCK_WRLOCK@
+_GL_FUNCDECL_SYS (pthread_rwlock_wrlock, int, (pthread_rwlock_t *lock)
+                                              _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_rwlock_wrlock, int, (pthread_rwlock_t *lock));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_rwlock_wrlock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_rwlock_wrlock
+# if HAVE_RAW_DECL_PTHREAD_RWLOCK_WRLOCK
+_GL_WARN_ON_USE (pthread_rwlock_wrlock, "pthread_rwlock_wrlock is not portable - "
+                 "use gnulib module pthread-rwlock for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_RWLOCK@
+# if @REPLACE_PTHREAD_RWLOCK_TRYRDLOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_rwlock_tryrdlock
+#   define pthread_rwlock_tryrdlock rpl_pthread_rwlock_tryrdlock
+#  endif
+_GL_FUNCDECL_RPL (pthread_rwlock_tryrdlock, int, (pthread_rwlock_t *lock)
+                                                 _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_rwlock_tryrdlock, int, (pthread_rwlock_t *lock));
+# else
+#  if !@HAVE_PTHREAD_RWLOCK_TRYRDLOCK@
+_GL_FUNCDECL_SYS (pthread_rwlock_tryrdlock, int, (pthread_rwlock_t *lock)
+                                                 _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_rwlock_tryrdlock, int, (pthread_rwlock_t *lock));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_rwlock_tryrdlock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_rwlock_tryrdlock
+# if HAVE_RAW_DECL_PTHREAD_RWLOCK_TRYRDLOCK
+_GL_WARN_ON_USE (pthread_rwlock_tryrdlock, "pthread_rwlock_tryrdlock is not portable - "
+                 "use gnulib module pthread-rwlock for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_RWLOCK@
+# if @REPLACE_PTHREAD_RWLOCK_TRYWRLOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_rwlock_trywrlock
+#   define pthread_rwlock_trywrlock rpl_pthread_rwlock_trywrlock
+#  endif
+_GL_FUNCDECL_RPL (pthread_rwlock_trywrlock, int, (pthread_rwlock_t *lock)
+                                                 _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_rwlock_trywrlock, int, (pthread_rwlock_t *lock));
+# else
+#  if !@HAVE_PTHREAD_RWLOCK_TRYWRLOCK@
+_GL_FUNCDECL_SYS (pthread_rwlock_trywrlock, int, (pthread_rwlock_t *lock)
+                                                 _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_rwlock_trywrlock, int, (pthread_rwlock_t *lock));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_rwlock_trywrlock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_rwlock_trywrlock
+# if HAVE_RAW_DECL_PTHREAD_RWLOCK_TRYWRLOCK
+_GL_WARN_ON_USE (pthread_rwlock_trywrlock, "pthread_rwlock_trywrlock is not portable - "
+                 "use gnulib module pthread-rwlock for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_RWLOCK@
+# if @REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_rwlock_timedrdlock
+#   define pthread_rwlock_timedrdlock rpl_pthread_rwlock_timedrdlock
+#  endif
+_GL_FUNCDECL_RPL (pthread_rwlock_timedrdlock, int,
+                  (pthread_rwlock_t *restrict lock,
+                   const struct timespec *restrict abstime)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (pthread_rwlock_timedrdlock, int,
+                  (pthread_rwlock_t *restrict lock,
+                   const struct timespec *restrict abstime));
+# else
+#  if !@HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+_GL_FUNCDECL_SYS (pthread_rwlock_timedrdlock, int,
+                  (pthread_rwlock_t *restrict lock,
+                   const struct timespec *restrict abstime)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_rwlock_timedrdlock, int,
+                  (pthread_rwlock_t *restrict lock,
+                   const struct timespec *restrict abstime));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_rwlock_timedrdlock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_rwlock_timedrdlock
+# if HAVE_RAW_DECL_PTHREAD_RWLOCK_TIMEDRDLOCK
+_GL_WARN_ON_USE (pthread_rwlock_timedrdlock, "pthread_rwlock_timedrdlock is not portable - "
+                 "use gnulib module pthread-rwlock for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_RWLOCK@
+# if @REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_rwlock_timedwrlock
+#   define pthread_rwlock_timedwrlock rpl_pthread_rwlock_timedwrlock
+#  endif
+_GL_FUNCDECL_RPL (pthread_rwlock_timedwrlock, int,
+                  (pthread_rwlock_t *restrict lock,
+                   const struct timespec *restrict abstime)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (pthread_rwlock_timedwrlock, int,
+                  (pthread_rwlock_t *restrict lock,
+                   const struct timespec *restrict abstime));
+# else
+#  if !@HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+_GL_FUNCDECL_SYS (pthread_rwlock_timedwrlock, int,
+                  (pthread_rwlock_t *restrict lock,
+                   const struct timespec *restrict abstime)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_rwlock_timedwrlock, int,
+                  (pthread_rwlock_t *restrict lock,
+                   const struct timespec *restrict abstime));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_rwlock_timedwrlock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_rwlock_timedwrlock
+# if HAVE_RAW_DECL_PTHREAD_RWLOCK_TIMEDWRLOCK
+_GL_WARN_ON_USE (pthread_rwlock_timedwrlock, "pthread_rwlock_timedwrlock is not portable - "
+                 "use gnulib module pthread-rwlock for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_RWLOCK@
+# if @REPLACE_PTHREAD_RWLOCK_UNLOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_rwlock_unlock
+#   define pthread_rwlock_unlock rpl_pthread_rwlock_unlock
+#  endif
+_GL_FUNCDECL_RPL (pthread_rwlock_unlock, int, (pthread_rwlock_t *lock)
+                                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_rwlock_unlock, int, (pthread_rwlock_t *lock));
+# else
+#  if !@HAVE_PTHREAD_RWLOCK_UNLOCK@
+_GL_FUNCDECL_SYS (pthread_rwlock_unlock, int, (pthread_rwlock_t *lock)
+                                              _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_rwlock_unlock, int, (pthread_rwlock_t *lock));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_rwlock_unlock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_rwlock_unlock
+# if HAVE_RAW_DECL_PTHREAD_RWLOCK_UNLOCK
+_GL_WARN_ON_USE (pthread_rwlock_unlock, "pthread_rwlock_unlock is not portable - "
+                 "use gnulib module pthread-rwlock for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_RWLOCK@
+# if @REPLACE_PTHREAD_RWLOCK_DESTROY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_rwlock_destroy
+#   define pthread_rwlock_destroy rpl_pthread_rwlock_destroy
+#  endif
+_GL_FUNCDECL_RPL (pthread_rwlock_destroy, int, (pthread_rwlock_t *lock)
+                                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_rwlock_destroy, int, (pthread_rwlock_t *lock));
+# else
+#  if !@HAVE_PTHREAD_RWLOCK_DESTROY@
+_GL_FUNCDECL_SYS (pthread_rwlock_destroy, int, (pthread_rwlock_t *lock)
+                                               _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_rwlock_destroy, int, (pthread_rwlock_t *lock));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_rwlock_destroy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_rwlock_destroy
+# if HAVE_RAW_DECL_PTHREAD_RWLOCK_DESTROY
+_GL_WARN_ON_USE (pthread_rwlock_destroy, "pthread_rwlock_destroy is not portable - "
+                 "use gnulib module pthread-rwlock for portability");
+# endif
+#endif
+
+/* =========== Condition variable functions =========== */
+
+#if @GNULIB_PTHREAD_COND@
+# if @REPLACE_PTHREAD_COND_INIT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_cond_init
+#   define pthread_cond_init rpl_pthread_cond_init
+#  endif
+_GL_FUNCDECL_RPL (pthread_cond_init, int,
+                  (pthread_cond_t *restrict cond,
+                   const pthread_condattr_t *restrict attr)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_cond_init, int,
+                  (pthread_cond_t *restrict cond,
+                   const pthread_condattr_t *restrict attr));
+# else
+#  if !@HAVE_PTHREAD_COND_INIT@
+_GL_FUNCDECL_SYS (pthread_cond_init, int,
+                  (pthread_cond_t *restrict cond,
+                   const pthread_condattr_t *restrict attr)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_cond_init, int,
+                  (pthread_cond_t *restrict cond,
+                   const pthread_condattr_t *restrict attr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_cond_init);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_cond_init
+# if HAVE_RAW_DECL_PTHREAD_COND_INIT
+_GL_WARN_ON_USE (pthread_cond_init, "pthread_cond_init is not portable - "
+                 "use gnulib module pthread-cond for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_COND@
+# if @REPLACE_PTHREAD_CONDATTR_INIT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_condattr_init
+#   define pthread_condattr_init rpl_pthread_condattr_init
+#  endif
+_GL_FUNCDECL_RPL (pthread_condattr_init, int, (pthread_condattr_t *attr)
+                                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_condattr_init, int, (pthread_condattr_t *attr));
+# else
+#  if !@HAVE_PTHREAD_CONDATTR_INIT@
+_GL_FUNCDECL_SYS (pthread_condattr_init, int, (pthread_condattr_t *attr)
+                                              _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_condattr_init, int, (pthread_condattr_t *attr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_condattr_init);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_condattr_init
+# if HAVE_RAW_DECL_PTHREAD_CONDATTR_INIT
+_GL_WARN_ON_USE (pthread_condattr_init, "pthread_condattr_init is not portable - "
+                 "use gnulib module pthread-cond for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_COND@
+# if @REPLACE_PTHREAD_CONDATTR_DESTROY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_condattr_destroy
+#   define pthread_condattr_destroy rpl_pthread_condattr_destroy
+#  endif
+_GL_FUNCDECL_RPL (pthread_condattr_destroy, int, (pthread_condattr_t *attr)
+                                                 _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_condattr_destroy, int, (pthread_condattr_t *attr));
+# else
+#  if !@HAVE_PTHREAD_CONDATTR_DESTROY@
+_GL_FUNCDECL_SYS (pthread_condattr_destroy, int, (pthread_condattr_t *attr)
+                                                 _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_condattr_destroy, int, (pthread_condattr_t *attr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_condattr_destroy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_condattr_destroy
+# if HAVE_RAW_DECL_PTHREAD_CONDATTR_DESTROY
+_GL_WARN_ON_USE (pthread_condattr_destroy, "pthread_condattr_destroy is not portable - "
+                 "use gnulib module pthread-cond for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_COND@
+# if @REPLACE_PTHREAD_COND_WAIT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_cond_wait
+#   define pthread_cond_wait rpl_pthread_cond_wait
+#  endif
+_GL_FUNCDECL_RPL (pthread_cond_wait, int,
+                  (pthread_cond_t *restrict cond,
+                   pthread_mutex_t *restrict mutex)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (pthread_cond_wait, int,
+                  (pthread_cond_t *restrict cond,
+                   pthread_mutex_t *restrict mutex));
+# else
+#  if !@HAVE_PTHREAD_COND_WAIT@
+_GL_FUNCDECL_SYS (pthread_cond_wait, int,
+                  (pthread_cond_t *restrict cond,
+                   pthread_mutex_t *restrict mutex)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_cond_wait, int,
+                  (pthread_cond_t *restrict cond,
+                   pthread_mutex_t *restrict mutex));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_cond_wait);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_cond_wait
+# if HAVE_RAW_DECL_PTHREAD_COND_WAIT
+_GL_WARN_ON_USE (pthread_cond_wait, "pthread_cond_wait is not portable - "
+                 "use gnulib module pthread-cond for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_COND@
+# if @REPLACE_PTHREAD_COND_TIMEDWAIT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_cond_timedwait
+#   define pthread_cond_timedwait rpl_pthread_cond_timedwait
+#  endif
+_GL_FUNCDECL_RPL (pthread_cond_timedwait, int,
+                  (pthread_cond_t *restrict cond,
+                   pthread_mutex_t *restrict mutex,
+                   const struct timespec *restrict abstime)
+                  _GL_ARG_NONNULL ((1, 2, 3)));
+_GL_CXXALIAS_RPL (pthread_cond_timedwait, int,
+                  (pthread_cond_t *restrict cond,
+                   pthread_mutex_t *restrict mutex,
+                   const struct timespec *restrict abstime));
+# else
+#  if !@HAVE_PTHREAD_COND_TIMEDWAIT@
+_GL_FUNCDECL_SYS (pthread_cond_timedwait, int,
+                  (pthread_cond_t *restrict cond,
+                   pthread_mutex_t *restrict mutex,
+                   const struct timespec *restrict abstime)
+                  _GL_ARG_NONNULL ((1, 2, 3)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_cond_timedwait, int,
+                  (pthread_cond_t *restrict cond,
+                   pthread_mutex_t *restrict mutex,
+                   const struct timespec *restrict abstime));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_cond_timedwait);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_cond_timedwait
+# if HAVE_RAW_DECL_PTHREAD_COND_TIMEDWAIT
+_GL_WARN_ON_USE (pthread_cond_timedwait, "pthread_cond_timedwait is not portable - "
+                 "use gnulib module pthread-cond for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_COND@
+# if @REPLACE_PTHREAD_COND_SIGNAL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_cond_signal
+#   define pthread_cond_signal rpl_pthread_cond_signal
+#  endif
+_GL_FUNCDECL_RPL (pthread_cond_signal, int, (pthread_cond_t *cond)
+                                            _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_cond_signal, int, (pthread_cond_t *cond));
+# else
+#  if !@HAVE_PTHREAD_COND_SIGNAL@
+_GL_FUNCDECL_SYS (pthread_cond_signal, int, (pthread_cond_t *cond)
+                                            _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_cond_signal, int, (pthread_cond_t *cond));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_cond_signal);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_cond_signal
+# if HAVE_RAW_DECL_PTHREAD_COND_SIGNAL
+_GL_WARN_ON_USE (pthread_cond_signal, "pthread_cond_signal is not portable - "
+                 "use gnulib module pthread-cond for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_COND@
+# if @REPLACE_PTHREAD_COND_BROADCAST@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_cond_broadcast
+#   define pthread_cond_broadcast rpl_pthread_cond_broadcast
+#  endif
+_GL_FUNCDECL_RPL (pthread_cond_broadcast, int, (pthread_cond_t *cond)
+                                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_cond_broadcast, int, (pthread_cond_t *cond));
+# else
+#  if !@HAVE_PTHREAD_COND_BROADCAST@
+_GL_FUNCDECL_SYS (pthread_cond_broadcast, int, (pthread_cond_t *cond)
+                                               _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_cond_broadcast, int, (pthread_cond_t *cond));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_cond_broadcast);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_cond_broadcast
+# if HAVE_RAW_DECL_PTHREAD_COND_BROADCAST
+_GL_WARN_ON_USE (pthread_cond_broadcast, "pthread_cond_broadcast is not portable - "
+                 "use gnulib module pthread-cond for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_COND@
+# if @REPLACE_PTHREAD_COND_DESTROY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_cond_destroy
+#   define pthread_cond_destroy rpl_pthread_cond_destroy
+#  endif
+_GL_FUNCDECL_RPL (pthread_cond_destroy, int, (pthread_cond_t *cond)
+                                             _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_cond_destroy, int, (pthread_cond_t *cond));
+# else
+#  if !@HAVE_PTHREAD_COND_DESTROY@
+_GL_FUNCDECL_SYS (pthread_cond_destroy, int, (pthread_cond_t *cond)
+                                             _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_cond_destroy, int, (pthread_cond_t *cond));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_cond_destroy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_cond_destroy
+# if HAVE_RAW_DECL_PTHREAD_COND_DESTROY
+_GL_WARN_ON_USE (pthread_cond_destroy, "pthread_cond_destroy is not portable - "
+                 "use gnulib module pthread-cond for portability");
+# endif
+#endif
+
+/* =========== Thread-specific storage functions =========== */
+
+#if @GNULIB_PTHREAD_TSS@
+# if @REPLACE_PTHREAD_KEY_CREATE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_key_create
+#   define pthread_key_create rpl_pthread_key_create
+#  endif
+_GL_FUNCDECL_RPL (pthread_key_create, int,
+                  (pthread_key_t *keyp, void (*destructor) (void *))
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_key_create, int,
+                  (pthread_key_t *keyp, void (*destructor) (void *)));
+# else
+#  if !@HAVE_PTHREAD_KEY_CREATE@
+_GL_FUNCDECL_SYS (pthread_key_create, int,
+                  (pthread_key_t *keyp, void (*destructor) (void *))
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS_CAST (pthread_key_create, int,
+                       (pthread_key_t *keyp, void (*destructor) (void *)));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_key_create);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_key_create
+# if HAVE_RAW_DECL_PTHREAD_KEY_CREATE
+_GL_WARN_ON_USE (pthread_key_create, "pthread_key_create is not portable - "
+                 "use gnulib module pthread-tss for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_TSS@
+# if @REPLACE_PTHREAD_SETSPECIFIC@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_setspecific
+#   define pthread_setspecific rpl_pthread_setspecific
+#  endif
+_GL_FUNCDECL_RPL (pthread_setspecific, int,
+                  (pthread_key_t key, const void *value));
+_GL_CXXALIAS_RPL (pthread_setspecific, int,
+                  (pthread_key_t key, const void *value));
+# else
+#  if !@HAVE_PTHREAD_SETSPECIFIC@
+_GL_FUNCDECL_SYS (pthread_setspecific, int,
+                  (pthread_key_t key, const void *value));
+#  endif
+_GL_CXXALIAS_SYS (pthread_setspecific, int,
+                  (pthread_key_t key, const void *value));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_setspecific);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_setspecific
+# if HAVE_RAW_DECL_PTHREAD_SETSPECIFIC
+_GL_WARN_ON_USE (pthread_setspecific, "pthread_setspecific is not portable - "
+                 "use gnulib module pthread-tss for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_TSS@
+# if @REPLACE_PTHREAD_GETSPECIFIC@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_getspecific
+#   define pthread_getspecific rpl_pthread_getspecific
+#  endif
+_GL_FUNCDECL_RPL (pthread_getspecific, void *, (pthread_key_t key));
+_GL_CXXALIAS_RPL (pthread_getspecific, void *, (pthread_key_t key));
+# else
+#  if !@HAVE_PTHREAD_GETSPECIFIC@
+_GL_FUNCDECL_SYS (pthread_getspecific, void *, (pthread_key_t key));
+#  endif
+_GL_CXXALIAS_SYS (pthread_getspecific, void *, (pthread_key_t key));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_getspecific);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_getspecific
+# if HAVE_RAW_DECL_PTHREAD_GETSPECIFIC
+_GL_WARN_ON_USE (pthread_getspecific, "pthread_getspecific is not portable - "
+                 "use gnulib module pthread-tss for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_TSS@
+# if @REPLACE_PTHREAD_KEY_DELETE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_key_delete
+#   define pthread_key_delete rpl_pthread_key_delete
+#  endif
+_GL_FUNCDECL_RPL (pthread_key_delete, int, (pthread_key_t key));
+_GL_CXXALIAS_RPL (pthread_key_delete, int, (pthread_key_t key));
+# else
+#  if !@HAVE_PTHREAD_KEY_DELETE@
+_GL_FUNCDECL_SYS (pthread_key_delete, int, (pthread_key_t key));
+#  endif
+_GL_CXXALIAS_SYS (pthread_key_delete, int, (pthread_key_t key));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_key_delete);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_key_delete
+# if HAVE_RAW_DECL_PTHREAD_KEY_DELETE
+_GL_WARN_ON_USE (pthread_key_delete, "pthread_key_delete is not portable - "
+                 "use gnulib module pthread-tss for portability");
+# endif
+#endif
+
+/* =========== Spinlock functions =========== */
+
+#if @GNULIB_PTHREAD_SPIN@
+# if @REPLACE_PTHREAD_SPIN_INIT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_spin_init
+#   define pthread_spin_init rpl_pthread_spin_init
+#  endif
+_GL_FUNCDECL_RPL (pthread_spin_init, int,
+                  (pthread_spinlock_t *lock, int shared_across_processes)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_spin_init, int,
+                  (pthread_spinlock_t *lock, int shared_across_processes));
+# else
+#  if !@HAVE_PTHREAD_SPIN_INIT@
+_GL_FUNCDECL_SYS (pthread_spin_init, int,
+                  (pthread_spinlock_t *lock, int shared_across_processes)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_spin_init, int,
+                  (pthread_spinlock_t *lock, int shared_across_processes));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_spin_init);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_spin_init
+# if HAVE_RAW_DECL_PTHREAD_SPIN_INIT
+_GL_WARN_ON_USE (pthread_spin_init, "pthread_spin_init is not portable - "
+                 "use gnulib module pthread-spin for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_SPIN@
+# if @REPLACE_PTHREAD_SPIN_LOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_spin_lock
+#   define pthread_spin_lock rpl_pthread_spin_lock
+#  endif
+_GL_FUNCDECL_RPL (pthread_spin_lock, int, (pthread_spinlock_t *lock)
+                                          _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_spin_lock, int, (pthread_spinlock_t *lock));
+# else
+#  if !@HAVE_PTHREAD_SPIN_LOCK@
+_GL_FUNCDECL_SYS (pthread_spin_lock, int, (pthread_spinlock_t *lock)
+                                          _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_spin_lock, int, (pthread_spinlock_t *lock));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_spin_lock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_spin_lock
+# if HAVE_RAW_DECL_PTHREAD_SPIN_LOCK
+_GL_WARN_ON_USE (pthread_spin_lock, "pthread_spin_lock is not portable - "
+                 "use gnulib module pthread-spin for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_SPIN@
+# if @REPLACE_PTHREAD_SPIN_TRYLOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_spin_trylock
+#   define pthread_spin_trylock rpl_pthread_spin_trylock
+#  endif
+_GL_FUNCDECL_RPL (pthread_spin_trylock, int, (pthread_spinlock_t *lock)
+                                             _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_spin_trylock, int, (pthread_spinlock_t *lock));
+# else
+#  if !@HAVE_PTHREAD_SPIN_TRYLOCK@
+_GL_FUNCDECL_SYS (pthread_spin_trylock, int, (pthread_spinlock_t *lock)
+                                             _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_spin_trylock, int, (pthread_spinlock_t *lock));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_spin_trylock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_spin_trylock
+# if HAVE_RAW_DECL_PTHREAD_SPIN_TRYLOCK
+_GL_WARN_ON_USE (pthread_spin_trylock, "pthread_spin_trylock is not portable - "
+                 "use gnulib module pthread-spin for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_SPIN@
+# if @REPLACE_PTHREAD_SPIN_UNLOCK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_spin_unlock
+#   define pthread_spin_unlock rpl_pthread_spin_unlock
+#  endif
+_GL_FUNCDECL_RPL (pthread_spin_unlock, int, (pthread_spinlock_t *lock)
+                                            _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_spin_unlock, int, (pthread_spinlock_t *lock));
+# else
+#  if !@HAVE_PTHREAD_SPIN_UNLOCK@
+_GL_FUNCDECL_SYS (pthread_spin_unlock, int, (pthread_spinlock_t *lock)
+                                            _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_spin_unlock, int, (pthread_spinlock_t *lock));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_spin_unlock);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_spin_unlock
+# if HAVE_RAW_DECL_PTHREAD_SPIN_UNLOCK
+_GL_WARN_ON_USE (pthread_spin_unlock, "pthread_spin_unlock is not portable - "
+                 "use gnulib module pthread-spin for portability");
+# endif
+#endif
+
+#if @GNULIB_PTHREAD_SPIN@
+# if @REPLACE_PTHREAD_SPIN_DESTROY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_spin_destroy
+#   define pthread_spin_destroy rpl_pthread_spin_destroy
+#  endif
+_GL_FUNCDECL_RPL (pthread_spin_destroy, int, (pthread_spinlock_t *lock)
+                                             _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pthread_spin_destroy, int, (pthread_spinlock_t *lock));
+# else
+#  if !@HAVE_PTHREAD_SPIN_DESTROY@
+_GL_FUNCDECL_SYS (pthread_spin_destroy, int, (pthread_spinlock_t *lock)
+                                             _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (pthread_spin_destroy, int, (pthread_spinlock_t *lock));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_spin_destroy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_spin_destroy
+# if HAVE_RAW_DECL_PTHREAD_SPIN_DESTROY
+_GL_WARN_ON_USE (pthread_spin_destroy, "pthread_spin_destroy is not portable - "
+                 "use gnulib module pthread-spin for portability");
+# endif
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_PTHREAD_H_ */
+#endif /* _@GUARD_PREFIX@_PTHREAD_H_ */
+#endif
diff --git a/src/grep/gnulib-tests/pthread_sigmask.c b/src/grep/gnulib-tests/pthread_sigmask.c
new file mode 100644
index 0000000..11b7091
--- /dev/null
+++ b/src/grep/gnulib-tests/pthread_sigmask.c
@@ -0,0 +1,92 @@
+/* POSIX compatible signal blocking for threads.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <signal.h>
+
+#include <errno.h>
+#include <stddef.h>
+
+#if PTHREAD_SIGMASK_INEFFECTIVE
+# include <string.h>
+#endif
+
+#if PTHREAD_SIGMASK_UNBLOCK_BUG
+# include <unistd.h>
+#endif
+
+int
+pthread_sigmask (int how, const sigset_t *new_mask, sigset_t *old_mask)
+#undef pthread_sigmask
+{
+#if HAVE_PTHREAD_SIGMASK
+  int ret;
+
+# if PTHREAD_SIGMASK_INEFFECTIVE
+  sigset_t omask, omask_copy;
+  sigset_t *old_mask_ptr = &omask;
+  sigemptyset (&omask);
+  /* Add a signal unlikely to be blocked, so that OMASK_COPY
+     is unlikely to match the actual mask.  */
+  sigaddset (&omask, SIGILL);
+  memcpy (&omask_copy, &omask, sizeof omask);
+# else
+  sigset_t *old_mask_ptr = old_mask;
+# endif
+
+  ret = pthread_sigmask (how, new_mask, old_mask_ptr);
+
+# if PTHREAD_SIGMASK_INEFFECTIVE
+  if (ret == 0)
+    {
+      /* Detect whether pthread_sigmask is currently ineffective.
+         Don't cache the information: libpthread.so could be dynamically
+         loaded after the program started and after pthread_sigmask was
+         called for the first time.  */
+      if (memcmp (&omask_copy, &omask, sizeof omask) == 0
+          && pthread_sigmask (1729, &omask_copy, NULL) == 0)
+        {
+          /* pthread_sigmask is currently ineffective.  The program is not
+             linked to -lpthread.  So use sigprocmask instead.  */
+          return (sigprocmask (how, new_mask, old_mask) < 0 ? errno : 0);
+        }
+
+      if (old_mask)
+        memcpy (old_mask, &omask, sizeof omask);
+    }
+# endif
+# if PTHREAD_SIGMASK_FAILS_WITH_ERRNO
+  if (ret == -1)
+    return errno;
+# endif
+# if PTHREAD_SIGMASK_UNBLOCK_BUG
+  if (ret == 0
+      && new_mask != NULL
+      && (how == SIG_UNBLOCK || how == SIG_SETMASK))
+    {
+      /* Give the OS the opportunity to raise signals that were pending before
+         the pthread_sigmask call and have now been unblocked.  */
+      usleep (1);
+    }
+# endif
+  return ret;
+#else
+  int ret = sigprocmask (how, new_mask, old_mask);
+  return (ret < 0 ? errno : 0);
+#endif
+}
diff --git a/src/grep/gnulib-tests/putenv.c b/src/grep/gnulib-tests/putenv.c
new file mode 100644
index 0000000..435d10f
--- /dev/null
+++ b/src/grep/gnulib-tests/putenv.c
@@ -0,0 +1,196 @@
+/* Copyright (C) 1991, 1994, 1997-1998, 2000, 2003-2021 Free Software
+   Foundation, Inc.
+
+   NOTE: The canonical source of this file is maintained with the GNU C
+   Library.  Bugs can be reported to bug-glibc@prep.ai.mit.edu.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <stddef.h>
+
+/* Include errno.h *after* sys/types.h to work around header problems
+   on AIX 3.2.5.  */
+#include <errno.h>
+#ifndef __set_errno
+# define __set_errno(ev) ((errno) = (ev))
+#endif
+
+#include <string.h>
+#include <unistd.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+#endif
+
+#if _LIBC
+# if HAVE_GNU_LD
+#  define environ __environ
+# else
+extern char **environ;
+# endif
+#endif
+
+#if _LIBC
+/* This lock protects against simultaneous modifications of 'environ'.  */
+# include <bits/libc-lock.h>
+__libc_lock_define_initialized (static, envlock)
+# define LOCK   __libc_lock_lock (envlock)
+# define UNLOCK __libc_lock_unlock (envlock)
+#else
+# define LOCK
+# define UNLOCK
+#endif
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Don't assume that UNICODE is not defined.  */
+# undef SetEnvironmentVariable
+# define SetEnvironmentVariable SetEnvironmentVariableA
+#endif
+
+static int
+_unsetenv (const char *name)
+{
+  size_t len;
+#if !HAVE_DECL__PUTENV
+  char **ep;
+#endif
+
+  if (name == NULL || *name == '\0' || strchr (name, '=') != NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  len = strlen (name);
+
+#if HAVE_DECL__PUTENV
+  {
+    int putenv_result;
+    char *name_ = malloc (len + 2);
+    memcpy (name_, name, len);
+    name_[len] = '=';
+    name_[len + 1] = 0;
+    putenv_result = _putenv (name_);
+    free (name_);
+    return putenv_result;
+  }
+#else
+
+  LOCK;
+
+  ep = environ;
+  while (*ep != NULL)
+    if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
+      {
+        /* Found it.  Remove this pointer by moving later ones back.  */
+        char **dp = ep;
+
+        do
+          dp[0] = dp[1];
+        while (*dp++);
+        /* Continue the loop in case NAME appears again.  */
+      }
+    else
+      ++ep;
+
+  UNLOCK;
+
+  return 0;
+#endif
+}
+
+
+/* Put STRING, which is of the form "NAME=VALUE", in the environment.
+   If STRING contains no '=', then remove STRING from the environment.  */
+int
+putenv (char *string)
+{
+  const char *name_end = strchr (string, '=');
+  char **ep;
+
+  if (name_end == NULL)
+    {
+      /* Remove the variable from the environment.  */
+      return _unsetenv (string);
+    }
+
+#if HAVE_DECL__PUTENV
+  /* Rely on _putenv to allocate the new environment.  If other
+     parts of the application use _putenv, the !HAVE_DECL__PUTENV code
+     would fight over who owns the environ vector, causing a crash.  */
+  if (name_end[1])
+    return _putenv (string);
+  else
+    {
+      /* _putenv ("NAME=") unsets NAME, so invoke _putenv ("NAME= ")
+         to allocate the environ vector and then replace the new
+         entry with "NAME=".  */
+      int putenv_result;
+      char *name_x = malloc (name_end - string + sizeof "= ");
+      if (!name_x)
+        return -1;
+      memcpy (name_x, string, name_end - string + 1);
+      name_x[name_end - string + 1] = ' ';
+      name_x[name_end - string + 2] = 0;
+      putenv_result = _putenv (name_x);
+      for (ep = environ; *ep; ep++)
+        if (strcmp (*ep, name_x) == 0)
+          {
+            *ep = string;
+            break;
+          }
+# if defined _WIN32 && ! defined __CYGWIN__
+      if (putenv_result == 0)
+        {
+          /* _putenv propagated "NAME= " into the subprocess environment;
+             fix that by calling SetEnvironmentVariable directly.  */
+          name_x[name_end - string] = 0;
+          putenv_result = SetEnvironmentVariable (name_x, "") ? 0 : -1;
+          errno = ENOMEM; /* ENOMEM is the only way to fail.  */
+        }
+# endif
+      free (name_x);
+      return putenv_result;
+    }
+#else
+  for (ep = environ; *ep; ep++)
+    if (strncmp (*ep, string, name_end - string) == 0
+        && (*ep)[name_end - string] == '=')
+      break;
+
+  if (*ep)
+    *ep = string;
+  else
+    {
+      static char **last_environ = NULL;
+      size_t size = ep - environ;
+      char **new_environ = malloc ((size + 2) * sizeof *new_environ);
+      if (! new_environ)
+        return -1;
+      new_environ[0] = string;
+      memcpy (new_environ + 1, environ, (size + 1) * sizeof *new_environ);
+      free (last_environ);
+      last_environ = new_environ;
+      environ = new_environ;
+    }
+
+  return 0;
+#endif
+}
diff --git a/src/grep/gnulib-tests/sched.in.h b/src/grep/gnulib-tests/sched.in.h
new file mode 100644
index 0000000..cdfe1ae
--- /dev/null
+++ b/src/grep/gnulib-tests/sched.in.h
@@ -0,0 +1,99 @@
+/* A GNU-like <sched.h>.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _@GUARD_PREFIX@_SCHED_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* The include_next requires a split double-inclusion guard.  */
+#if @HAVE_SCHED_H@
+# if @HAVE_SYS_CDEFS_H@
+#  include <sys/cdefs.h>
+# endif
+# @INCLUDE_NEXT@ @NEXT_SCHED_H@
+#endif
+
+#ifndef _@GUARD_PREFIX@_SCHED_H
+#define _@GUARD_PREFIX@_SCHED_H
+
+/* Get pid_t.
+   This is needed on glibc 2.11 (see
+   glibc bug <https://sourceware.org/bugzilla/show_bug.cgi?id=13198>)
+   and Mac OS X 10.5.  */
+#include <sys/types.h>
+
+#ifdef __KLIBC__
+/* On OS/2 kLIBC, struct sched_param is in spawn.h.  */
+# include <spawn.h>
+#endif
+
+#ifdef __VMS
+/* On OpenVMS, struct sched_param is in <pthread.h>.  */
+# include <pthread.h>
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+#if !@HAVE_STRUCT_SCHED_PARAM@
+
+# if !GNULIB_defined_struct_sched_param
+struct sched_param
+{
+  int sched_priority;
+};
+#  define GNULIB_defined_struct_sched_param 1
+# endif
+
+#endif
+
+#if !(defined SCHED_FIFO && defined SCHED_RR && defined SCHED_OTHER)
+# define SCHED_FIFO   1
+# define SCHED_RR     2
+# define SCHED_OTHER  0
+#endif
+
+#if @GNULIB_SCHED_YIELD@
+# if @REPLACE_SCHED_YIELD@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef sched_yield
+#   define sched_yield rpl_sched_yield
+#  endif
+_GL_FUNCDECL_RPL (sched_yield, int, (void));
+_GL_CXXALIAS_RPL (sched_yield, int, (void));
+# else
+#  if !@HAVE_SCHED_YIELD@
+_GL_FUNCDECL_SYS (sched_yield, int, (void));
+#  endif
+_GL_CXXALIAS_SYS (sched_yield, int, (void));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (sched_yield);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef sched_yield
+# if HAVE_RAW_DECL_SCHED_YIELD
+_GL_WARN_ON_USE (sched_yield, "sched_yield is not portable - "
+                 "use gnulib module sched_yield for portability");
+# endif
+#endif
+
+#endif /* _@GUARD_PREFIX@_SCHED_H */
+#endif /* _@GUARD_PREFIX@_SCHED_H */
diff --git a/src/grep/gnulib-tests/select.c b/src/grep/gnulib-tests/select.c
new file mode 100644
index 0000000..eddac4b
--- /dev/null
+++ b/src/grep/gnulib-tests/select.c
@@ -0,0 +1,598 @@
+/* Emulation for select(2)
+   Contributed by Paolo Bonzini.
+
+   Copyright 2008-2021 Free Software Foundation, Inc.
+
+   This file is part of gnulib.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <sys/select.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Native Windows.  */
+
+#include <alloca.h>
+#include <assert.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <limits.h>
+
+#include <winsock2.h>
+#include <windows.h>
+#include <io.h>
+#include <stdio.h>
+#include <conio.h>
+#include <time.h>
+
+/* Get the overridden 'struct timeval'.  */
+#include <sys/time.h>
+
+#if GNULIB_MSVC_NOTHROW
+# include "msvc-nothrow.h"
+#else
+# include <io.h>
+#endif
+
+#undef select
+
+/* Don't assume that UNICODE is not defined.  */
+#undef GetModuleHandle
+#define GetModuleHandle GetModuleHandleA
+#undef PeekConsoleInput
+#define PeekConsoleInput PeekConsoleInputA
+#undef CreateEvent
+#define CreateEvent CreateEventA
+#undef PeekMessage
+#define PeekMessage PeekMessageA
+#undef DispatchMessage
+#define DispatchMessage DispatchMessageA
+
+/* Avoid warnings from gcc -Wcast-function-type.  */
+#define GetProcAddress \
+  (void *) GetProcAddress
+
+struct bitset {
+  unsigned char in[FD_SETSIZE / CHAR_BIT];
+  unsigned char out[FD_SETSIZE / CHAR_BIT];
+};
+
+/* Declare data structures for ntdll functions.  */
+typedef struct _FILE_PIPE_LOCAL_INFORMATION {
+  ULONG NamedPipeType;
+  ULONG NamedPipeConfiguration;
+  ULONG MaximumInstances;
+  ULONG CurrentInstances;
+  ULONG InboundQuota;
+  ULONG ReadDataAvailable;
+  ULONG OutboundQuota;
+  ULONG WriteQuotaAvailable;
+  ULONG NamedPipeState;
+  ULONG NamedPipeEnd;
+} FILE_PIPE_LOCAL_INFORMATION, *PFILE_PIPE_LOCAL_INFORMATION;
+
+typedef struct _IO_STATUS_BLOCK
+{
+  union {
+    DWORD Status;
+    PVOID Pointer;
+  } u;
+  ULONG_PTR Information;
+} IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;
+
+typedef enum _FILE_INFORMATION_CLASS {
+  FilePipeLocalInformation = 24
+} FILE_INFORMATION_CLASS, *PFILE_INFORMATION_CLASS;
+
+typedef DWORD (WINAPI *PNtQueryInformationFile)
+         (HANDLE, IO_STATUS_BLOCK *, VOID *, ULONG, FILE_INFORMATION_CLASS);
+
+#ifndef PIPE_BUF
+#define PIPE_BUF        512
+#endif
+
+static BOOL IsConsoleHandle (HANDLE h)
+{
+  DWORD mode;
+  return GetConsoleMode (h, &mode) != 0;
+}
+
+static BOOL
+IsSocketHandle (HANDLE h)
+{
+  WSANETWORKEVENTS ev;
+
+  if (IsConsoleHandle (h))
+    return FALSE;
+
+  /* Under Wine, it seems that getsockopt returns 0 for pipes too.
+     WSAEnumNetworkEvents instead distinguishes the two correctly.  */
+  ev.lNetworkEvents = 0xDEADBEEF;
+  WSAEnumNetworkEvents ((SOCKET) h, NULL, &ev);
+  return ev.lNetworkEvents != 0xDEADBEEF;
+}
+
+/* Compute output fd_sets for libc descriptor FD (whose Windows handle is
+   H).  */
+
+static int
+windows_poll_handle (HANDLE h, int fd,
+                     struct bitset *rbits,
+                     struct bitset *wbits,
+                     struct bitset *xbits)
+{
+  BOOL read, write, except;
+  int i, ret;
+  INPUT_RECORD *irbuffer;
+  DWORD avail, nbuffer;
+  BOOL bRet;
+  IO_STATUS_BLOCK iosb;
+  FILE_PIPE_LOCAL_INFORMATION fpli;
+  static PNtQueryInformationFile NtQueryInformationFile;
+  static BOOL once_only;
+
+  read = write = except = FALSE;
+  switch (GetFileType (h))
+    {
+    case FILE_TYPE_DISK:
+      read = TRUE;
+      write = TRUE;
+      break;
+
+    case FILE_TYPE_PIPE:
+      if (!once_only)
+        {
+          NtQueryInformationFile = (PNtQueryInformationFile)
+            GetProcAddress (GetModuleHandle ("ntdll.dll"),
+                            "NtQueryInformationFile");
+          once_only = TRUE;
+        }
+
+      if (PeekNamedPipe (h, NULL, 0, NULL, &avail, NULL) != 0)
+        {
+          if (avail)
+            read = TRUE;
+        }
+      else if (GetLastError () == ERROR_BROKEN_PIPE)
+        ;
+
+      else
+        {
+          /* It was the write-end of the pipe.  Check if it is writable.
+             If NtQueryInformationFile fails, optimistically assume the pipe is
+             writable.  This could happen on Windows 9x, where
+             NtQueryInformationFile is not available, or if we inherit a pipe
+             that doesn't permit FILE_READ_ATTRIBUTES access on the write end
+             (I think this should not happen since Windows XP SP2; WINE seems
+             fine too).  Otherwise, ensure that enough space is available for
+             atomic writes.  */
+          memset (&iosb, 0, sizeof (iosb));
+          memset (&fpli, 0, sizeof (fpli));
+
+          if (!NtQueryInformationFile
+              || NtQueryInformationFile (h, &iosb, &fpli, sizeof (fpli),
+                                         FilePipeLocalInformation)
+              || fpli.WriteQuotaAvailable >= PIPE_BUF
+              || (fpli.OutboundQuota < PIPE_BUF &&
+                  fpli.WriteQuotaAvailable == fpli.OutboundQuota))
+            write = TRUE;
+        }
+      break;
+
+    case FILE_TYPE_CHAR:
+      write = TRUE;
+      if (!(rbits->in[fd / CHAR_BIT] & (1 << (fd & (CHAR_BIT - 1)))))
+        break;
+
+      ret = WaitForSingleObject (h, 0);
+      if (ret == WAIT_OBJECT_0)
+        {
+          if (!IsConsoleHandle (h))
+            {
+              read = TRUE;
+              break;
+            }
+
+          nbuffer = avail = 0;
+          bRet = GetNumberOfConsoleInputEvents (h, &nbuffer);
+
+          /* Screen buffers handles are filtered earlier.  */
+          assert (bRet);
+          if (nbuffer == 0)
+            {
+              except = TRUE;
+              break;
+            }
+
+          irbuffer = (INPUT_RECORD *) alloca (nbuffer * sizeof (INPUT_RECORD));
+          bRet = PeekConsoleInput (h, irbuffer, nbuffer, &avail);
+          if (!bRet || avail == 0)
+            {
+              except = TRUE;
+              break;
+            }
+
+          for (i = 0; i < avail; i++)
+            if (irbuffer[i].EventType == KEY_EVENT)
+              read = TRUE;
+        }
+      break;
+
+    default:
+      ret = WaitForSingleObject (h, 0);
+      write = TRUE;
+      if (ret == WAIT_OBJECT_0)
+        read = TRUE;
+
+      break;
+    }
+
+  ret = 0;
+  if (read && (rbits->in[fd / CHAR_BIT] & (1 << (fd & (CHAR_BIT - 1)))))
+    {
+      rbits->out[fd / CHAR_BIT] |= (1 << (fd & (CHAR_BIT - 1)));
+      ret++;
+    }
+
+  if (write && (wbits->in[fd / CHAR_BIT] & (1 << (fd & (CHAR_BIT - 1)))))
+    {
+      wbits->out[fd / CHAR_BIT] |= (1 << (fd & (CHAR_BIT - 1)));
+      ret++;
+    }
+
+  if (except && (xbits->in[fd / CHAR_BIT] & (1 << (fd & (CHAR_BIT - 1)))))
+    {
+      xbits->out[fd / CHAR_BIT] |= (1 << (fd & (CHAR_BIT - 1)));
+      ret++;
+    }
+
+  return ret;
+}
+
+int
+rpl_select (int nfds, fd_set *rfds, fd_set *wfds, fd_set *xfds,
+            struct timeval *timeout)
+#undef timeval
+{
+  static struct timeval tv0;
+  static HANDLE hEvent;
+  HANDLE h, handle_array[FD_SETSIZE + 2];
+  fd_set handle_rfds, handle_wfds, handle_xfds;
+  struct bitset rbits, wbits, xbits;
+  unsigned char anyfds_in[FD_SETSIZE / CHAR_BIT];
+  DWORD ret, wait_timeout, nhandles, nsock, nbuffer;
+  MSG msg;
+  int i, fd, rc;
+  clock_t tend;
+
+  if (nfds > FD_SETSIZE)
+    nfds = FD_SETSIZE;
+
+  if (!timeout)
+    wait_timeout = INFINITE;
+  else
+    {
+      wait_timeout = timeout->tv_sec * 1000 + timeout->tv_usec / 1000;
+
+      /* select is also used as a portable usleep.  */
+      if (!rfds && !wfds && !xfds)
+        {
+          Sleep (wait_timeout);
+          return 0;
+        }
+    }
+
+  if (!hEvent)
+    hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
+
+  handle_array[0] = hEvent;
+  nhandles = 1;
+  nsock = 0;
+
+  /* Copy descriptors to bitsets.  At the same time, eliminate
+     bits in the "wrong" direction for console input buffers
+     and screen buffers, because screen buffers are waitable
+     and they will block until a character is available.  */
+  memset (&rbits, 0, sizeof (rbits));
+  memset (&wbits, 0, sizeof (wbits));
+  memset (&xbits, 0, sizeof (xbits));
+  memset (anyfds_in, 0, sizeof (anyfds_in));
+  if (rfds)
+    for (i = 0; i < rfds->fd_count; i++)
+      {
+        fd = rfds->fd_array[i];
+        h = (HANDLE) _get_osfhandle (fd);
+        if (IsConsoleHandle (h)
+            && !GetNumberOfConsoleInputEvents (h, &nbuffer))
+          continue;
+
+        rbits.in[fd / CHAR_BIT] |= 1 << (fd & (CHAR_BIT - 1));
+        anyfds_in[fd / CHAR_BIT] |= 1 << (fd & (CHAR_BIT - 1));
+      }
+  else
+    rfds = (fd_set *) alloca (sizeof (fd_set));
+
+  if (wfds)
+    for (i = 0; i < wfds->fd_count; i++)
+      {
+        fd = wfds->fd_array[i];
+        h = (HANDLE) _get_osfhandle (fd);
+        if (IsConsoleHandle (h)
+            && GetNumberOfConsoleInputEvents (h, &nbuffer))
+          continue;
+
+        wbits.in[fd / CHAR_BIT] |= 1 << (fd & (CHAR_BIT - 1));
+        anyfds_in[fd / CHAR_BIT] |= 1 << (fd & (CHAR_BIT - 1));
+      }
+  else
+    wfds = (fd_set *) alloca (sizeof (fd_set));
+
+  if (xfds)
+    for (i = 0; i < xfds->fd_count; i++)
+      {
+        fd = xfds->fd_array[i];
+        xbits.in[fd / CHAR_BIT] |= 1 << (fd & (CHAR_BIT - 1));
+        anyfds_in[fd / CHAR_BIT] |= 1 << (fd & (CHAR_BIT - 1));
+      }
+  else
+    xfds = (fd_set *) alloca (sizeof (fd_set));
+
+  /* Zero all the fd_sets, including the application's.  */
+  FD_ZERO (rfds);
+  FD_ZERO (wfds);
+  FD_ZERO (xfds);
+  FD_ZERO (&handle_rfds);
+  FD_ZERO (&handle_wfds);
+  FD_ZERO (&handle_xfds);
+
+  /* Classify handles.  Create fd sets for sockets, poll the others. */
+  for (i = 0; i < nfds; i++)
+    {
+      if ((anyfds_in[i / CHAR_BIT] & (1 << (i & (CHAR_BIT - 1)))) == 0)
+        continue;
+
+      h = (HANDLE) _get_osfhandle (i);
+      if (!h)
+        {
+          errno = EBADF;
+          return -1;
+        }
+
+      if (IsSocketHandle (h))
+        {
+          int requested = FD_CLOSE;
+
+          /* See above; socket handles are mapped onto select, but we
+             need to map descriptors to handles.  */
+          if (rbits.in[i / CHAR_BIT] & (1 << (i & (CHAR_BIT - 1))))
+            {
+              requested |= FD_READ | FD_ACCEPT;
+              FD_SET ((SOCKET) h, rfds);
+              FD_SET ((SOCKET) h, &handle_rfds);
+            }
+          if (wbits.in[i / CHAR_BIT] & (1 << (i & (CHAR_BIT - 1))))
+            {
+              requested |= FD_WRITE | FD_CONNECT;
+              FD_SET ((SOCKET) h, wfds);
+              FD_SET ((SOCKET) h, &handle_wfds);
+            }
+          if (xbits.in[i / CHAR_BIT] & (1 << (i & (CHAR_BIT - 1))))
+            {
+              requested |= FD_OOB;
+              FD_SET ((SOCKET) h, xfds);
+              FD_SET ((SOCKET) h, &handle_xfds);
+            }
+
+          WSAEventSelect ((SOCKET) h, hEvent, requested);
+          nsock++;
+        }
+      else
+        {
+          handle_array[nhandles++] = h;
+
+          /* Poll now.  If we get an event, do not wait below.  */
+          if (wait_timeout != 0
+              && windows_poll_handle (h, i, &rbits, &wbits, &xbits))
+            wait_timeout = 0;
+        }
+    }
+
+  /* Place a sentinel at the end of the array.  */
+  handle_array[nhandles] = NULL;
+
+  /* When will the waiting period expire?  */
+  if (wait_timeout != INFINITE)
+    tend = clock () + wait_timeout;
+
+restart:
+  if (wait_timeout == 0 || nsock == 0)
+    rc = 0;
+  else
+    {
+      /* See if we need to wait in the loop below.  If any select is ready,
+         do MsgWaitForMultipleObjects anyway to dispatch messages, but
+         no need to call select again.  */
+      rc = select (0, &handle_rfds, &handle_wfds, &handle_xfds, &tv0);
+      if (rc == 0)
+        {
+          /* Restore the fd_sets for the other select we do below.  */
+          memcpy (&handle_rfds, rfds, sizeof (fd_set));
+          memcpy (&handle_wfds, wfds, sizeof (fd_set));
+          memcpy (&handle_xfds, xfds, sizeof (fd_set));
+        }
+      else
+        wait_timeout = 0;
+    }
+
+  /* How much is left to wait?  */
+  if (wait_timeout != INFINITE)
+    {
+      clock_t tnow = clock ();
+      if (tend >= tnow)
+        wait_timeout = tend - tnow;
+      else
+        wait_timeout = 0;
+    }
+
+  for (;;)
+    {
+      ret = MsgWaitForMultipleObjects (nhandles, handle_array, FALSE,
+                                       wait_timeout, QS_ALLINPUT);
+
+      if (ret == WAIT_OBJECT_0 + nhandles)
+        {
+          /* new input of some other kind */
+          BOOL bRet;
+          while ((bRet = PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) != 0)
+            {
+              TranslateMessage (&msg);
+              DispatchMessage (&msg);
+            }
+        }
+      else
+        break;
+    }
+
+  /* If we haven't done it yet, check the status of the sockets.  */
+  if (rc == 0 && nsock > 0)
+    rc = select (0, &handle_rfds, &handle_wfds, &handle_xfds, &tv0);
+
+  if (nhandles > 1)
+    {
+      /* Count results that are not counted in the return value of select.  */
+      nhandles = 1;
+      for (i = 0; i < nfds; i++)
+        {
+          if ((anyfds_in[i / CHAR_BIT] & (1 << (i & (CHAR_BIT - 1)))) == 0)
+            continue;
+
+          h = (HANDLE) _get_osfhandle (i);
+          if (h == handle_array[nhandles])
+            {
+              /* Not a socket.  */
+              nhandles++;
+              windows_poll_handle (h, i, &rbits, &wbits, &xbits);
+              if (rbits.out[i / CHAR_BIT] & (1 << (i & (CHAR_BIT - 1)))
+                  || wbits.out[i / CHAR_BIT] & (1 << (i & (CHAR_BIT - 1)))
+                  || xbits.out[i / CHAR_BIT] & (1 << (i & (CHAR_BIT - 1))))
+                rc++;
+            }
+        }
+
+      if (rc == 0
+          && (wait_timeout == INFINITE
+              /* If NHANDLES > 1, but no bits are set, it means we've
+                 been told incorrectly that some handle was signaled.
+                 This happens with anonymous pipes, which always cause
+                 MsgWaitForMultipleObjects to exit immediately, but no
+                 data is found ready to be read by windows_poll_handle.
+                 To avoid a total failure (whereby we return zero and
+                 don't wait at all), let's poll in a more busy loop.  */
+              || (wait_timeout != 0 && nhandles > 1)))
+        {
+          /* Sleep 1 millisecond to avoid busy wait and retry with the
+             original fd_sets.  */
+          memcpy (&handle_rfds, rfds, sizeof (fd_set));
+          memcpy (&handle_wfds, wfds, sizeof (fd_set));
+          memcpy (&handle_xfds, xfds, sizeof (fd_set));
+          SleepEx (1, TRUE);
+          goto restart;
+        }
+      if (timeout && wait_timeout == 0 && rc == 0)
+        timeout->tv_sec = timeout->tv_usec = 0;
+    }
+
+  /* Now fill in the results.  */
+  FD_ZERO (rfds);
+  FD_ZERO (wfds);
+  FD_ZERO (xfds);
+  nhandles = 1;
+  for (i = 0; i < nfds; i++)
+    {
+      if ((anyfds_in[i / CHAR_BIT] & (1 << (i & (CHAR_BIT - 1)))) == 0)
+        continue;
+
+      h = (HANDLE) _get_osfhandle (i);
+      if (h != handle_array[nhandles])
+        {
+          /* Perform handle->descriptor mapping.  */
+          SOCKET s = (SOCKET) h;
+          WSAEventSelect (s, NULL, 0);
+          if (FD_ISSET (s, &handle_rfds))
+            FD_SET (i, rfds);
+          if (FD_ISSET (s, &handle_wfds))
+            FD_SET (i, wfds);
+          if (FD_ISSET (s, &handle_xfds))
+            FD_SET (i, xfds);
+        }
+      else
+        {
+          /* Not a socket.  */
+          nhandles++;
+          if (rbits.out[i / CHAR_BIT] & (1 << (i & (CHAR_BIT - 1))))
+            FD_SET (i, rfds);
+          if (wbits.out[i / CHAR_BIT] & (1 << (i & (CHAR_BIT - 1))))
+            FD_SET (i, wfds);
+          if (xbits.out[i / CHAR_BIT] & (1 << (i & (CHAR_BIT - 1))))
+            FD_SET (i, xfds);
+        }
+    }
+
+  return rc;
+}
+
+#else /* ! Native Windows.  */
+
+#include <stddef.h> /* NULL */
+#include <errno.h>
+#include <unistd.h>
+
+#undef select
+
+int
+rpl_select (int nfds, fd_set *rfds, fd_set *wfds, fd_set *xfds,
+            struct timeval *timeout)
+{
+  int i;
+
+  /* FreeBSD 8.2 has a bug: it does not always detect invalid fds.  */
+  if (nfds < 0 || nfds > FD_SETSIZE)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  for (i = 0; i < nfds; i++)
+    {
+      if (((rfds && FD_ISSET (i, rfds))
+           || (wfds && FD_ISSET (i, wfds))
+           || (xfds && FD_ISSET (i, xfds)))
+          && dup2 (i, i) != i)
+        return -1;
+    }
+
+  /* Interix 3.5 has a bug: it does not support nfds == 0.  */
+  if (nfds == 0)
+    {
+      nfds = 1;
+      rfds = NULL;
+      wfds = NULL;
+      xfds = NULL;
+    }
+  return select (nfds, rfds, wfds, xfds, timeout);
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/setenv.c b/src/grep/gnulib-tests/setenv.c
new file mode 100644
index 0000000..3ad3477
--- /dev/null
+++ b/src/grep/gnulib-tests/setenv.c
@@ -0,0 +1,390 @@
+/* Copyright (C) 1992, 1995-2003, 2005-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#if !_LIBC
+/* Don't use __attribute__ __nonnull__ in this compilation unit.  Otherwise gcc
+   optimizes away the name == NULL test below.  */
+# define _GL_ARG_NONNULL(params)
+
+# define _GL_USE_STDLIB_ALLOC 1
+# include <config.h>
+#endif
+
+#include <alloca.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <errno.h>
+#ifndef __set_errno
+# define __set_errno(ev) ((errno) = (ev))
+#endif
+
+#include <string.h>
+#if _LIBC || HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#if !_LIBC
+# include "malloca.h"
+#endif
+
+#if _LIBC || !HAVE_SETENV
+
+#if !_LIBC
+# define __environ      environ
+#endif
+
+#if _LIBC
+/* This lock protects against simultaneous modifications of 'environ'.  */
+# include <bits/libc-lock.h>
+__libc_lock_define_initialized (static, envlock)
+# define LOCK   __libc_lock_lock (envlock)
+# define UNLOCK __libc_lock_unlock (envlock)
+#else
+# define LOCK
+# define UNLOCK
+#endif
+
+/* In the GNU C library we must keep the namespace clean.  */
+#ifdef _LIBC
+# define setenv __setenv
+# define clearenv __clearenv
+# define tfind __tfind
+# define tsearch __tsearch
+#endif
+
+/* In the GNU C library implementation we try to be more clever and
+   allow arbitrarily many changes of the environment given that the used
+   values are from a small set.  Outside glibc this will eat up all
+   memory after a while.  */
+#if defined _LIBC || (defined HAVE_SEARCH_H && defined HAVE_TSEARCH \
+                      && (defined __GNUC__ || defined __clang__))
+# define USE_TSEARCH    1
+# include <search.h>
+typedef int (*compar_fn_t) (const void *, const void *);
+
+/* This is a pointer to the root of the search tree with the known
+   values.  */
+static void *known_values;
+
+# define KNOWN_VALUE(Str) \
+  ({                                                                          \
+    void *value = tfind (Str, &known_values, (compar_fn_t) strcmp);           \
+    value != NULL ? *(char **) value : NULL;                                  \
+  })
+# define STORE_VALUE(Str) \
+  tsearch (Str, &known_values, (compar_fn_t) strcmp)
+
+#else
+# undef USE_TSEARCH
+
+# define KNOWN_VALUE(Str) NULL
+# define STORE_VALUE(Str) do { } while (0)
+
+#endif
+
+
+/* If this variable is not a null pointer we allocated the current
+   environment.  */
+static char **last_environ;
+
+
+/* This function is used by 'setenv' and 'putenv'.  The difference between
+   the two functions is that for the former must create a new string which
+   is then placed in the environment, while the argument of 'putenv'
+   must be used directly.  This is all complicated by the fact that we try
+   to reuse values once generated for a 'setenv' call since we can never
+   free the strings.  */
+int
+__add_to_environ (const char *name, const char *value, const char *combined,
+                  int replace)
+{
+  char **ep;
+  size_t size;
+  const size_t namelen = strlen (name);
+  const size_t vallen = value != NULL ? strlen (value) + 1 : 0;
+
+  LOCK;
+
+  /* We have to get the pointer now that we have the lock and not earlier
+     since another thread might have created a new environment.  */
+  ep = __environ;
+
+  size = 0;
+  if (ep != NULL)
+    {
+      for (; *ep != NULL; ++ep)
+        if (!strncmp (*ep, name, namelen) && (*ep)[namelen] == '=')
+          break;
+        else
+          ++size;
+    }
+
+  if (ep == NULL || *ep == NULL)
+    {
+      char **new_environ;
+#ifdef USE_TSEARCH
+      char *new_value;
+#endif
+
+      /* We allocated this space; we can extend it.  */
+      new_environ =
+        (char **) (last_environ == NULL
+                   ? malloc ((size + 2) * sizeof (char *))
+                   : realloc (last_environ, (size + 2) * sizeof (char *)));
+      if (new_environ == NULL)
+        {
+          /* It's easier to set errno to ENOMEM than to rely on the
+             'malloc-posix' and 'realloc-posix' gnulib modules.  */
+          __set_errno (ENOMEM);
+          UNLOCK;
+          return -1;
+        }
+
+      /* If the whole entry is given add it.  */
+      if (combined != NULL)
+        /* We must not add the string to the search tree since it belongs
+           to the user.  */
+        new_environ[size] = (char *) combined;
+      else
+        {
+          /* See whether the value is already known.  */
+#ifdef USE_TSEARCH
+# ifdef _LIBC
+          new_value = (char *) alloca (namelen + 1 + vallen);
+          __mempcpy (__mempcpy (__mempcpy (new_value, name, namelen), "=", 1),
+                     value, vallen);
+# else
+          new_value = (char *) malloca (namelen + 1 + vallen);
+          if (new_value == NULL)
+            {
+              __set_errno (ENOMEM);
+              UNLOCK;
+              return -1;
+            }
+          memcpy (new_value, name, namelen);
+          new_value[namelen] = '=';
+          memcpy (&new_value[namelen + 1], value, vallen);
+# endif
+
+          new_environ[size] = KNOWN_VALUE (new_value);
+          if (new_environ[size] == NULL)
+#endif
+            {
+              new_environ[size] = (char *) malloc (namelen + 1 + vallen);
+              if (new_environ[size] == NULL)
+                {
+#if defined USE_TSEARCH && !defined _LIBC
+                  freea (new_value);
+#endif
+                  __set_errno (ENOMEM);
+                  UNLOCK;
+                  return -1;
+                }
+
+#ifdef USE_TSEARCH
+              memcpy (new_environ[size], new_value, namelen + 1 + vallen);
+#else
+              memcpy (new_environ[size], name, namelen);
+              new_environ[size][namelen] = '=';
+              memcpy (&new_environ[size][namelen + 1], value, vallen);
+#endif
+              /* And save the value now.  We cannot do this when we remove
+                 the string since then we cannot decide whether it is a
+                 user string or not.  */
+              STORE_VALUE (new_environ[size]);
+            }
+#if defined USE_TSEARCH && !defined _LIBC
+          freea (new_value);
+#endif
+        }
+
+      if (__environ != last_environ)
+        memcpy ((char *) new_environ, (char *) __environ,
+                size * sizeof (char *));
+
+      new_environ[size + 1] = NULL;
+
+      last_environ = __environ = new_environ;
+    }
+  else if (replace)
+    {
+      char *np;
+
+      /* Use the user string if given.  */
+      if (combined != NULL)
+        np = (char *) combined;
+      else
+        {
+#ifdef USE_TSEARCH
+          char *new_value;
+# ifdef _LIBC
+          new_value = alloca (namelen + 1 + vallen);
+          __mempcpy (__mempcpy (__mempcpy (new_value, name, namelen), "=", 1),
+                     value, vallen);
+# else
+          new_value = malloca (namelen + 1 + vallen);
+          if (new_value == NULL)
+            {
+              __set_errno (ENOMEM);
+              UNLOCK;
+              return -1;
+            }
+          memcpy (new_value, name, namelen);
+          new_value[namelen] = '=';
+          memcpy (&new_value[namelen + 1], value, vallen);
+# endif
+
+          np = KNOWN_VALUE (new_value);
+          if (np == NULL)
+#endif
+            {
+              np = (char *) malloc (namelen + 1 + vallen);
+              if (np == NULL)
+                {
+#if defined USE_TSEARCH && !defined _LIBC
+                  freea (new_value);
+#endif
+                  __set_errno (ENOMEM);
+                  UNLOCK;
+                  return -1;
+                }
+
+#ifdef USE_TSEARCH
+              memcpy (np, new_value, namelen + 1 + vallen);
+#else
+              memcpy (np, name, namelen);
+              np[namelen] = '=';
+              memcpy (&np[namelen + 1], value, vallen);
+#endif
+              /* And remember the value.  */
+              STORE_VALUE (np);
+            }
+#if defined USE_TSEARCH && !defined _LIBC
+          freea (new_value);
+#endif
+        }
+
+      *ep = np;
+    }
+
+  UNLOCK;
+
+  return 0;
+}
+
+int
+setenv (const char *name, const char *value, int replace)
+{
+  if (name == NULL || *name == '\0' || strchr (name, '=') != NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return __add_to_environ (name, value, NULL, replace);
+}
+
+/* The 'clearenv' was planned to be added to POSIX.1 but probably
+   never made it.  Nevertheless the POSIX.9 standard (POSIX bindings
+   for Fortran 77) requires this function.  */
+int
+clearenv (void)
+{
+  LOCK;
+
+  if (__environ == last_environ && __environ != NULL)
+    {
+      /* We allocated this environment so we can free it.  */
+      free (__environ);
+      last_environ = NULL;
+    }
+
+  /* Clear the environment pointer removes the whole environment.  */
+  __environ = NULL;
+
+  UNLOCK;
+
+  return 0;
+}
+
+#ifdef _LIBC
+static void
+free_mem (void)
+{
+  /* Remove all traces.  */
+  clearenv ();
+
+  /* Now remove the search tree.  */
+  __tdestroy (known_values, free);
+  known_values = NULL;
+}
+text_set_element (__libc_subfreeres, free_mem);
+
+
+# undef setenv
+# undef clearenv
+weak_alias (__setenv, setenv)
+weak_alias (__clearenv, clearenv)
+#endif
+
+#endif /* _LIBC || !HAVE_SETENV */
+
+/* The rest of this file is called into use when replacing an existing
+   but buggy setenv.  Known bugs include failure to diagnose invalid
+   name, and consuming a leading '=' from value.  */
+#if HAVE_SETENV
+
+# undef setenv
+# if !HAVE_DECL_SETENV
+extern int setenv (const char *, const char *, int);
+# endif
+# define STREQ(a, b) (strcmp (a, b) == 0)
+
+int
+rpl_setenv (const char *name, const char *value, int replace)
+{
+  int result;
+  if (!name || !*name || strchr (name, '='))
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  /* Call the real setenv even if replace is 0, in case implementation
+     has underlying data to update, such as when environ changes.  */
+  result = setenv (name, value, replace);
+  if (result == 0 && replace && *value == '=')
+    {
+      char *tmp = getenv (name);
+      if (!STREQ (tmp, value))
+        {
+          int saved_errno;
+          size_t len = strlen (value);
+          tmp = malloca (len + 2);
+          /* Since leading '=' is eaten, double it up.  */
+          *tmp = '=';
+          memcpy (tmp + 1, value, len + 1);
+          result = setenv (name, tmp, replace);
+          saved_errno = errno;
+          freea (tmp);
+          errno = saved_errno;
+        }
+    }
+  return result;
+}
+
+#endif /* HAVE_SETENV */
diff --git a/src/grep/gnulib-tests/setlocale.c b/src/grep/gnulib-tests/setlocale.c
new file mode 100644
index 0000000..7a10c4b
--- /dev/null
+++ b/src/grep/gnulib-tests/setlocale.c
@@ -0,0 +1,1673 @@
+/* Set the current locale.  -*- coding: utf-8 -*-
+   Copyright (C) 2009, 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+/* Override setlocale() so that when the default locale is requested
+   (locale = ""), the environment variables LC_ALL, LC_*, and LANG are
+   considered.
+   Also include all the functionality from libintl's setlocale() override.  */
+
+/* Please keep this file in sync with
+   gettext/gettext-runtime/intl/setlocale.c !  */
+
+/* Specification.  */
+#include <locale.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "localename.h"
+
+#if HAVE_CFLOCALECOPYPREFERREDLANGUAGES || HAVE_CFPREFERENCESCOPYAPPVALUE
+# if HAVE_CFLOCALECOPYPREFERREDLANGUAGES
+#  include <CoreFoundation/CFLocale.h>
+# elif HAVE_CFPREFERENCESCOPYAPPVALUE
+#  include <CoreFoundation/CFPreferences.h>
+# endif
+# include <CoreFoundation/CFPropertyList.h>
+# include <CoreFoundation/CFArray.h>
+# include <CoreFoundation/CFString.h>
+extern void gl_locale_name_canonicalize (char *name);
+#endif
+
+#if 1
+
+# undef setlocale
+
+/* Which of the replacements to activate?  */
+# if NEED_SETLOCALE_IMPROVED
+#  define setlocale_improved rpl_setlocale
+# elif NEED_SETLOCALE_MTSAFE
+#  define setlocale_mtsafe rpl_setlocale
+# else
+#  error "This file should only be compiled if NEED_SETLOCALE_IMPROVED || NEED_SETLOCALE_MTSAFE."
+# endif
+
+/* Like setlocale, but guaranteed to be multithread-safe if LOCALE == NULL.  */
+# if !SETLOCALE_NULL_ALL_MTSAFE || !SETLOCALE_NULL_ONE_MTSAFE /* i.e. if NEED_SETLOCALE_MTSAFE */
+
+#  if NEED_SETLOCALE_IMPROVED
+static
+#  endif
+char *
+setlocale_mtsafe (int category, const char *locale)
+{
+  if (locale == NULL)
+    return (char *) setlocale_null (category);
+  else
+    return setlocale (category, locale);
+}
+# else /* !NEED_SETLOCALE_MTSAFE */
+
+#  define setlocale_mtsafe setlocale
+
+# endif /* NEED_SETLOCALE_MTSAFE */
+
+# if NEED_SETLOCALE_IMPROVED
+
+/* Return string representation of locale category CATEGORY.  */
+static const char *
+category_to_name (int category)
+{
+  const char *retval;
+
+  switch (category)
+  {
+  case LC_COLLATE:
+    retval = "LC_COLLATE";
+    break;
+  case LC_CTYPE:
+    retval = "LC_CTYPE";
+    break;
+  case LC_MONETARY:
+    retval = "LC_MONETARY";
+    break;
+  case LC_NUMERIC:
+    retval = "LC_NUMERIC";
+    break;
+  case LC_TIME:
+    retval = "LC_TIME";
+    break;
+  case LC_MESSAGES:
+    retval = "LC_MESSAGES";
+    break;
+  default:
+    /* If you have a better idea for a default value let me know.  */
+    retval = "LC_XXX";
+  }
+
+  return retval;
+}
+
+#  if defined _WIN32 && ! defined __CYGWIN__
+
+/* The native Windows setlocale() function expects locale names of the form
+   "German" or "German_Germany" or "DEU", but not "de" or "de_DE".  We need
+   to convert the names from the form with ISO 639 language code and ISO 3166
+   country code to the form with English names or with three-letter identifier.
+   The three-letter identifiers known by a Windows XP SP2 or SP3 are:
+     AFK  Afrikaans_South Africa.1252
+     ARA  Arabic_Saudi Arabia.1256
+     ARB  Arabic_Lebanon.1256
+     ARE  Arabic_Egypt.1256
+     ARG  Arabic_Algeria.1256
+     ARH  Arabic_Bahrain.1256
+     ARI  Arabic_Iraq.1256
+     ARJ  Arabic_Jordan.1256
+     ARK  Arabic_Kuwait.1256
+     ARL  Arabic_Libya.1256
+     ARM  Arabic_Morocco.1256
+     ARO  Arabic_Oman.1256
+     ARQ  Arabic_Qatar.1256
+     ARS  Arabic_Syria.1256
+     ART  Arabic_Tunisia.1256
+     ARU  Arabic_U.A.E..1256
+     ARY  Arabic_Yemen.1256
+     AZE  Azeri (Latin)_Azerbaijan.1254
+     BEL  Belarusian_Belarus.1251
+     BGR  Bulgarian_Bulgaria.1251
+     BSB  Bosnian_Bosnia and Herzegovina.1250
+     BSC  Bosnian (Cyrillic)_Bosnia and Herzegovina.1250  (wrong encoding!)
+     CAT  Catalan_Spain.1252
+     CHH  Chinese_Hong Kong S.A.R..950
+     CHI  Chinese_Singapore.936
+     CHS  Chinese_People's Republic of China.936
+     CHT  Chinese_Taiwan.950
+     CSY  Czech_Czech Republic.1250
+     CYM  Welsh_United Kingdom.1252
+     DAN  Danish_Denmark.1252
+     DEA  German_Austria.1252
+     DEC  German_Liechtenstein.1252
+     DEL  German_Luxembourg.1252
+     DES  German_Switzerland.1252
+     DEU  German_Germany.1252
+     ELL  Greek_Greece.1253
+     ENA  English_Australia.1252
+     ENB  English_Caribbean.1252
+     ENC  English_Canada.1252
+     ENG  English_United Kingdom.1252
+     ENI  English_Ireland.1252
+     ENJ  English_Jamaica.1252
+     ENL  English_Belize.1252
+     ENP  English_Republic of the Philippines.1252
+     ENS  English_South Africa.1252
+     ENT  English_Trinidad and Tobago.1252
+     ENU  English_United States.1252
+     ENW  English_Zimbabwe.1252
+     ENZ  English_New Zealand.1252
+     ESA  Spanish_Panama.1252
+     ESB  Spanish_Bolivia.1252
+     ESC  Spanish_Costa Rica.1252
+     ESD  Spanish_Dominican Republic.1252
+     ESE  Spanish_El Salvador.1252
+     ESF  Spanish_Ecuador.1252
+     ESG  Spanish_Guatemala.1252
+     ESH  Spanish_Honduras.1252
+     ESI  Spanish_Nicaragua.1252
+     ESL  Spanish_Chile.1252
+     ESM  Spanish_Mexico.1252
+     ESN  Spanish_Spain.1252
+     ESO  Spanish_Colombia.1252
+     ESP  Spanish_Spain.1252
+     ESR  Spanish_Peru.1252
+     ESS  Spanish_Argentina.1252
+     ESU  Spanish_Puerto Rico.1252
+     ESV  Spanish_Venezuela.1252
+     ESY  Spanish_Uruguay.1252
+     ESZ  Spanish_Paraguay.1252
+     ETI  Estonian_Estonia.1257
+     EUQ  Basque_Spain.1252
+     FAR  Farsi_Iran.1256
+     FIN  Finnish_Finland.1252
+     FOS  Faroese_Faroe Islands.1252
+     FPO  Filipino_Philippines.1252
+     FRA  French_France.1252
+     FRB  French_Belgium.1252
+     FRC  French_Canada.1252
+     FRL  French_Luxembourg.1252
+     FRM  French_Principality of Monaco.1252
+     FRS  French_Switzerland.1252
+     FYN  Frisian_Netherlands.1252
+     GLC  Galician_Spain.1252
+     HEB  Hebrew_Israel.1255
+     HRB  Croatian_Bosnia and Herzegovina.1250
+     HRV  Croatian_Croatia.1250
+     HUN  Hungarian_Hungary.1250
+     IND  Indonesian_Indonesia.1252
+     IRE  Irish_Ireland.1252
+     ISL  Icelandic_Iceland.1252
+     ITA  Italian_Italy.1252
+     ITS  Italian_Switzerland.1252
+     IUK  Inuktitut (Latin)_Canada.1252
+     JPN  Japanese_Japan.932
+     KKZ  Kazakh_Kazakhstan.1251
+     KOR  Korean_Korea.949
+     KYR  Kyrgyz_Kyrgyzstan.1251
+     LBX  Luxembourgish_Luxembourg.1252
+     LTH  Lithuanian_Lithuania.1257
+     LVI  Latvian_Latvia.1257
+     MKI  FYRO Macedonian_Former Yugoslav Republic of Macedonia.1251
+     MON  Mongolian_Mongolia.1251
+     MPD  Mapudungun_Chile.1252
+     MSB  Malay_Brunei Darussalam.1252
+     MSL  Malay_Malaysia.1252
+     MWK  Mohawk_Canada.1252
+     NLB  Dutch_Belgium.1252
+     NLD  Dutch_Netherlands.1252
+     NON  Norwegian-Nynorsk_Norway.1252
+     NOR  Norwegian (Bokmål)_Norway.1252
+     NSO  Northern Sotho_South Africa.1252
+     PLK  Polish_Poland.1250
+     PTB  Portuguese_Brazil.1252
+     PTG  Portuguese_Portugal.1252
+     QUB  Quechua_Bolivia.1252
+     QUE  Quechua_Ecuador.1252
+     QUP  Quechua_Peru.1252
+     RMC  Romansh_Switzerland.1252
+     ROM  Romanian_Romania.1250
+     RUS  Russian_Russia.1251
+     SKY  Slovak_Slovakia.1250
+     SLV  Slovenian_Slovenia.1250
+     SMA  Sami (Southern)_Norway.1252
+     SMB  Sami (Southern)_Sweden.1252
+     SME  Sami (Northern)_Norway.1252
+     SMF  Sami (Northern)_Sweden.1252
+     SMG  Sami (Northern)_Finland.1252
+     SMJ  Sami (Lule)_Norway.1252
+     SMK  Sami (Lule)_Sweden.1252
+     SMN  Sami (Inari)_Finland.1252
+     SMS  Sami (Skolt)_Finland.1252
+     SQI  Albanian_Albania.1250
+     SRB  Serbian (Cyrillic)_Serbia and Montenegro.1251
+     SRL  Serbian (Latin)_Serbia and Montenegro.1250
+     SRN  Serbian (Cyrillic)_Bosnia and Herzegovina.1251
+     SRS  Serbian (Latin)_Bosnia and Herzegovina.1250
+     SVE  Swedish_Sweden.1252
+     SVF  Swedish_Finland.1252
+     SWK  Swahili_Kenya.1252
+     THA  Thai_Thailand.874
+     TRK  Turkish_Turkey.1254
+     TSN  Tswana_South Africa.1252
+     TTT  Tatar_Russia.1251
+     UKR  Ukrainian_Ukraine.1251
+     URD  Urdu_Islamic Republic of Pakistan.1256
+     USA  English_United States.1252
+     UZB  Uzbek (Latin)_Uzbekistan.1254
+     VIT  Vietnamese_Viet Nam.1258
+     XHO  Xhosa_South Africa.1252
+     ZHH  Chinese_Hong Kong S.A.R..950
+     ZHI  Chinese_Singapore.936
+     ZHM  Chinese_Macau S.A.R..950
+     ZUL  Zulu_South Africa.1252
+ */
+
+/* Table from ISO 639 language code, optionally with country or script suffix,
+   to English name.
+   Keep in sync with the gl_locale_name_from_win32_LANGID function in
+   localename.c!  */
+struct table_entry
+{
+  const char *code;
+  const char *english;
+};
+static const struct table_entry language_table[] =
+  {
+    { "af", "Afrikaans" },
+    { "am", "Amharic" },
+    { "ar", "Arabic" },
+    { "arn", "Mapudungun" },
+    { "as", "Assamese" },
+    { "az@cyrillic", "Azeri (Cyrillic)" },
+    { "az@latin", "Azeri (Latin)" },
+    { "ba", "Bashkir" },
+    { "be", "Belarusian" },
+    { "ber", "Tamazight" },
+    { "ber@arabic", "Tamazight (Arabic)" },
+    { "ber@latin", "Tamazight (Latin)" },
+    { "bg", "Bulgarian" },
+    { "bin", "Edo" },
+    { "bn", "Bengali" },
+    { "bn_BD", "Bengali (Bangladesh)" },
+    { "bn_IN", "Bengali (India)" },
+    { "bnt", "Sutu" },
+    { "bo", "Tibetan" },
+    { "br", "Breton" },
+    { "bs", "BSB" }, /* "Bosnian (Latin)" */
+    { "bs@cyrillic", "BSC" }, /* Bosnian (Cyrillic) */
+    { "ca", "Catalan" },
+    { "chr", "Cherokee" },
+    { "co", "Corsican" },
+    { "cpe", "Hawaiian" },
+    { "cs", "Czech" },
+    { "cy", "Welsh" },
+    { "da", "Danish" },
+    { "de", "German" },
+    { "dsb", "Lower Sorbian" },
+    { "dv", "Divehi" },
+    { "el", "Greek" },
+    { "en", "English" },
+    { "es", "Spanish" },
+    { "et", "Estonian" },
+    { "eu", "Basque" },
+    { "fa", "Farsi" },
+    { "ff", "Fulfulde" },
+    { "fi", "Finnish" },
+    { "fo", "Faroese" }, /* "Faeroese" does not work */
+    { "fr", "French" },
+    { "fy", "Frisian" },
+    { "ga", "IRE" }, /* Gaelic (Ireland) */
+    { "gd", "Gaelic (Scotland)" },
+    { "gd", "Scottish Gaelic" },
+    { "gl", "Galician" },
+    { "gn", "Guarani" },
+    { "gsw", "Alsatian" },
+    { "gu", "Gujarati" },
+    { "ha", "Hausa" },
+    { "he", "Hebrew" },
+    { "hi", "Hindi" },
+    { "hr", "Croatian" },
+    { "hsb", "Upper Sorbian" },
+    { "hu", "Hungarian" },
+    { "hy", "Armenian" },
+    { "id", "Indonesian" },
+    { "ig", "Igbo" },
+    { "ii", "Yi" },
+    { "is", "Icelandic" },
+    { "it", "Italian" },
+    { "iu", "IUK" }, /* Inuktitut */
+    { "ja", "Japanese" },
+    { "ka", "Georgian" },
+    { "kk", "Kazakh" },
+    { "kl", "Greenlandic" },
+    { "km", "Cambodian" },
+    { "km", "Khmer" },
+    { "kn", "Kannada" },
+    { "ko", "Korean" },
+    { "kok", "Konkani" },
+    { "kr", "Kanuri" },
+    { "ks", "Kashmiri" },
+    { "ks_IN", "Kashmiri_India" },
+    { "ks_PK", "Kashmiri (Arabic)_Pakistan" },
+    { "ky", "Kyrgyz" },
+    { "la", "Latin" },
+    { "lb", "Luxembourgish" },
+    { "lo", "Lao" },
+    { "lt", "Lithuanian" },
+    { "lv", "Latvian" },
+    { "mi", "Maori" },
+    { "mk", "FYRO Macedonian" },
+    { "mk", "Macedonian" },
+    { "ml", "Malayalam" },
+    { "mn", "Mongolian" },
+    { "mni", "Manipuri" },
+    { "moh", "Mohawk" },
+    { "mr", "Marathi" },
+    { "ms", "Malay" },
+    { "mt", "Maltese" },
+    { "my", "Burmese" },
+    { "nb", "NOR" }, /* Norwegian Bokmål */
+    { "ne", "Nepali" },
+    { "nic", "Ibibio" },
+    { "nl", "Dutch" },
+    { "nn", "NON" }, /* Norwegian Nynorsk */
+    { "no", "Norwegian" },
+    { "nso", "Northern Sotho" },
+    { "nso", "Sepedi" },
+    { "oc", "Occitan" },
+    { "om", "Oromo" },
+    { "or", "Oriya" },
+    { "pa", "Punjabi" },
+    { "pap", "Papiamentu" },
+    { "pl", "Polish" },
+    { "prs", "Dari" },
+    { "ps", "Pashto" },
+    { "pt", "Portuguese" },
+    { "qu", "Quechua" },
+    { "qut", "K'iche'" },
+    { "rm", "Romansh" },
+    { "ro", "Romanian" },
+    { "ru", "Russian" },
+    { "rw", "Kinyarwanda" },
+    { "sa", "Sanskrit" },
+    { "sah", "Yakut" },
+    { "sd", "Sindhi" },
+    { "se", "Sami (Northern)" },
+    { "se", "Northern Sami" },
+    { "si", "Sinhalese" },
+    { "sk", "Slovak" },
+    { "sl", "Slovenian" },
+    { "sma", "Sami (Southern)" },
+    { "sma", "Southern Sami" },
+    { "smj", "Sami (Lule)" },
+    { "smj", "Lule Sami" },
+    { "smn", "Sami (Inari)" },
+    { "smn", "Inari Sami" },
+    { "sms", "Sami (Skolt)" },
+    { "sms", "Skolt Sami" },
+    { "so", "Somali" },
+    { "sq", "Albanian" },
+    { "sr", "Serbian (Latin)" },
+    { "sr@cyrillic", "SRB" }, /* Serbian (Cyrillic) */
+    { "sv", "Swedish" },
+    { "sw", "Swahili" },
+    { "syr", "Syriac" },
+    { "ta", "Tamil" },
+    { "te", "Telugu" },
+    { "tg", "Tajik" },
+    { "th", "Thai" },
+    { "ti", "Tigrinya" },
+    { "tk", "Turkmen" },
+    { "tl", "Filipino" },
+    { "tn", "Tswana" },
+    { "tr", "Turkish" },
+    { "ts", "Tsonga" },
+    { "tt", "Tatar" },
+    { "ug", "Uighur" },
+    { "uk", "Ukrainian" },
+    { "ur", "Urdu" },
+    { "uz", "Uzbek" },
+    { "uz", "Uzbek (Latin)" },
+    { "uz@cyrillic", "Uzbek (Cyrillic)" },
+    { "ve", "Venda" },
+    { "vi", "Vietnamese" },
+    { "wen", "Sorbian" },
+    { "wo", "Wolof" },
+    { "xh", "Xhosa" },
+    { "yi", "Yiddish" },
+    { "yo", "Yoruba" },
+    { "zh", "Chinese" },
+    { "zu", "Zulu" }
+  };
+
+/* Table from ISO 3166 country code to English name.
+   Keep in sync with the gl_locale_name_from_win32_LANGID function in
+   localename.c!  */
+static const struct table_entry country_table[] =
+  {
+    { "AE", "U.A.E." },
+    { "AF", "Afghanistan" },
+    { "AL", "Albania" },
+    { "AM", "Armenia" },
+    { "AN", "Netherlands Antilles" },
+    { "AR", "Argentina" },
+    { "AT", "Austria" },
+    { "AU", "Australia" },
+    { "AZ", "Azerbaijan" },
+    { "BA", "Bosnia and Herzegovina" },
+    { "BD", "Bangladesh" },
+    { "BE", "Belgium" },
+    { "BG", "Bulgaria" },
+    { "BH", "Bahrain" },
+    { "BN", "Brunei Darussalam" },
+    { "BO", "Bolivia" },
+    { "BR", "Brazil" },
+    { "BT", "Bhutan" },
+    { "BY", "Belarus" },
+    { "BZ", "Belize" },
+    { "CA", "Canada" },
+    { "CG", "Congo" },
+    { "CH", "Switzerland" },
+    { "CI", "Cote d'Ivoire" },
+    { "CL", "Chile" },
+    { "CM", "Cameroon" },
+    { "CN", "People's Republic of China" },
+    { "CO", "Colombia" },
+    { "CR", "Costa Rica" },
+    { "CS", "Serbia and Montenegro" },
+    { "CZ", "Czech Republic" },
+    { "DE", "Germany" },
+    { "DK", "Denmark" },
+    { "DO", "Dominican Republic" },
+    { "DZ", "Algeria" },
+    { "EC", "Ecuador" },
+    { "EE", "Estonia" },
+    { "EG", "Egypt" },
+    { "ER", "Eritrea" },
+    { "ES", "Spain" },
+    { "ET", "Ethiopia" },
+    { "FI", "Finland" },
+    { "FO", "Faroe Islands" },
+    { "FR", "France" },
+    { "GB", "United Kingdom" },
+    { "GD", "Caribbean" },
+    { "GE", "Georgia" },
+    { "GL", "Greenland" },
+    { "GR", "Greece" },
+    { "GT", "Guatemala" },
+    { "HK", "Hong Kong" },
+    { "HK", "Hong Kong S.A.R." },
+    { "HN", "Honduras" },
+    { "HR", "Croatia" },
+    { "HT", "Haiti" },
+    { "HU", "Hungary" },
+    { "ID", "Indonesia" },
+    { "IE", "Ireland" },
+    { "IL", "Israel" },
+    { "IN", "India" },
+    { "IQ", "Iraq" },
+    { "IR", "Iran" },
+    { "IS", "Iceland" },
+    { "IT", "Italy" },
+    { "JM", "Jamaica" },
+    { "JO", "Jordan" },
+    { "JP", "Japan" },
+    { "KE", "Kenya" },
+    { "KG", "Kyrgyzstan" },
+    { "KH", "Cambodia" },
+    { "KR", "South Korea" },
+    { "KW", "Kuwait" },
+    { "KZ", "Kazakhstan" },
+    { "LA", "Laos" },
+    { "LB", "Lebanon" },
+    { "LI", "Liechtenstein" },
+    { "LK", "Sri Lanka" },
+    { "LT", "Lithuania" },
+    { "LU", "Luxembourg" },
+    { "LV", "Latvia" },
+    { "LY", "Libya" },
+    { "MA", "Morocco" },
+    { "MC", "Principality of Monaco" },
+    { "MD", "Moldava" },
+    { "MD", "Moldova" },
+    { "ME", "Montenegro" },
+    { "MK", "Former Yugoslav Republic of Macedonia" },
+    { "ML", "Mali" },
+    { "MM", "Myanmar" },
+    { "MN", "Mongolia" },
+    { "MO", "Macau S.A.R." },
+    { "MT", "Malta" },
+    { "MV", "Maldives" },
+    { "MX", "Mexico" },
+    { "MY", "Malaysia" },
+    { "NG", "Nigeria" },
+    { "NI", "Nicaragua" },
+    { "NL", "Netherlands" },
+    { "NO", "Norway" },
+    { "NP", "Nepal" },
+    { "NZ", "New Zealand" },
+    { "OM", "Oman" },
+    { "PA", "Panama" },
+    { "PE", "Peru" },
+    { "PH", "Philippines" },
+    { "PK", "Islamic Republic of Pakistan" },
+    { "PL", "Poland" },
+    { "PR", "Puerto Rico" },
+    { "PT", "Portugal" },
+    { "PY", "Paraguay" },
+    { "QA", "Qatar" },
+    { "RE", "Reunion" },
+    { "RO", "Romania" },
+    { "RS", "Serbia" },
+    { "RU", "Russia" },
+    { "RW", "Rwanda" },
+    { "SA", "Saudi Arabia" },
+    { "SE", "Sweden" },
+    { "SG", "Singapore" },
+    { "SI", "Slovenia" },
+    { "SK", "Slovak" },
+    { "SN", "Senegal" },
+    { "SO", "Somalia" },
+    { "SR", "Suriname" },
+    { "SV", "El Salvador" },
+    { "SY", "Syria" },
+    { "TH", "Thailand" },
+    { "TJ", "Tajikistan" },
+    { "TM", "Turkmenistan" },
+    { "TN", "Tunisia" },
+    { "TR", "Turkey" },
+    { "TT", "Trinidad and Tobago" },
+    { "TW", "Taiwan" },
+    { "TZ", "Tanzania" },
+    { "UA", "Ukraine" },
+    { "US", "United States" },
+    { "UY", "Uruguay" },
+    { "VA", "Vatican" },
+    { "VE", "Venezuela" },
+    { "VN", "Viet Nam" },
+    { "YE", "Yemen" },
+    { "ZA", "South Africa" },
+    { "ZW", "Zimbabwe" }
+  };
+
+/* Given a string STRING, find the set of indices i such that TABLE[i].code is
+   the given STRING.  It is a range [lo,hi-1].  */
+typedef struct { size_t lo; size_t hi; } range_t;
+static void
+search (const struct table_entry *table, size_t table_size, const char *string,
+        range_t *result)
+{
+  /* The table is sorted.  Perform a binary search.  */
+  size_t hi = table_size;
+  size_t lo = 0;
+  while (lo < hi)
+    {
+      /* Invariant:
+         for i < lo, strcmp (table[i].code, string) < 0,
+         for i >= hi, strcmp (table[i].code, string) > 0.  */
+      size_t mid = (hi + lo) >> 1; /* >= lo, < hi */
+      int cmp = strcmp (table[mid].code, string);
+      if (cmp < 0)
+        lo = mid + 1;
+      else if (cmp > 0)
+        hi = mid;
+      else
+        {
+          /* Found an i with
+               strcmp (language_table[i].code, string) == 0.
+             Find the entire interval of such i.  */
+          {
+            size_t i;
+
+            for (i = mid; i > lo; )
+              {
+                i--;
+                if (strcmp (table[i].code, string) < 0)
+                  {
+                    lo = i + 1;
+                    break;
+                  }
+              }
+          }
+          {
+            size_t i;
+
+            for (i = mid + 1; i < hi; i++)
+              {
+                if (strcmp (table[i].code, string) > 0)
+                  {
+                    hi = i;
+                    break;
+                  }
+              }
+          }
+          /* The set of i with
+               strcmp (language_table[i].code, string) == 0
+             is the interval [lo, hi-1].  */
+          break;
+        }
+    }
+  result->lo = lo;
+  result->hi = hi;
+}
+
+/* Like setlocale, but accept also locale names in the form ll or ll_CC,
+   where ll is an ISO 639 language code and CC is an ISO 3166 country code.  */
+static char *
+setlocale_unixlike (int category, const char *locale)
+{
+  char *result;
+  char llCC_buf[64];
+  char ll_buf[64];
+  char CC_buf[64];
+
+  /* The native Windows implementation of setlocale understands the special
+     locale name "C", but not "POSIX".  Therefore map "POSIX" to "C".  */
+  if (locale != NULL && strcmp (locale, "POSIX") == 0)
+    locale = "C";
+
+  /* First, try setlocale with the original argument unchanged.  */
+  result = setlocale_mtsafe (category, locale);
+  if (result != NULL)
+    return result;
+
+  /* Otherwise, assume the argument is in the form
+       language[_territory][.codeset][@modifier]
+     and try to map it using the tables.  */
+  if (strlen (locale) < sizeof (llCC_buf))
+    {
+      /* Second try: Remove the codeset part.  */
+      {
+        const char *p = locale;
+        char *q = llCC_buf;
+
+        /* Copy the part before the dot.  */
+        for (; *p != '\0' && *p != '.'; p++, q++)
+          *q = *p;
+        if (*p == '.')
+          /* Skip the part up to the '@', if any.  */
+          for (; *p != '\0' && *p != '@'; p++)
+            ;
+        /* Copy the part starting with '@', if any.  */
+        for (; *p != '\0'; p++, q++)
+          *q = *p;
+        *q = '\0';
+      }
+      /* llCC_buf now contains
+           language[_territory][@modifier]
+       */
+      if (strcmp (llCC_buf, locale) != 0)
+        {
+          result = setlocale (category, llCC_buf);
+          if (result != NULL)
+            return result;
+        }
+      /* Look it up in language_table.  */
+      {
+        range_t range;
+        size_t i;
+
+        search (language_table,
+                sizeof (language_table) / sizeof (language_table[0]),
+                llCC_buf,
+                &range);
+
+        for (i = range.lo; i < range.hi; i++)
+          {
+            /* Try the replacement in language_table[i].  */
+            result = setlocale (category, language_table[i].english);
+            if (result != NULL)
+              return result;
+          }
+      }
+      /* Split language[_territory][@modifier]
+         into  ll_buf = language[@modifier]
+         and   CC_buf = territory
+       */
+      {
+        const char *underscore = strchr (llCC_buf, '_');
+        if (underscore != NULL)
+          {
+            const char *territory_start = underscore + 1;
+            const char *territory_end = strchr (territory_start, '@');
+            if (territory_end == NULL)
+              territory_end = territory_start + strlen (territory_start);
+
+            memcpy (ll_buf, llCC_buf, underscore - llCC_buf);
+            strcpy (ll_buf + (underscore - llCC_buf), territory_end);
+
+            memcpy (CC_buf, territory_start, territory_end - territory_start);
+            CC_buf[territory_end - territory_start] = '\0';
+
+            {
+              /* Look up ll_buf in language_table
+                 and CC_buf in country_table.  */
+              range_t language_range;
+
+              search (language_table,
+                      sizeof (language_table) / sizeof (language_table[0]),
+                      ll_buf,
+                      &language_range);
+              if (language_range.lo < language_range.hi)
+                {
+                  range_t country_range;
+
+                  search (country_table,
+                          sizeof (country_table) / sizeof (country_table[0]),
+                          CC_buf,
+                          &country_range);
+                  if (country_range.lo < country_range.hi)
+                    {
+                      size_t i;
+                      size_t j;
+
+                      for (i = language_range.lo; i < language_range.hi; i++)
+                        for (j = country_range.lo; j < country_range.hi; j++)
+                          {
+                            /* Concatenate the replacements.  */
+                            const char *part1 = language_table[i].english;
+                            size_t part1_len = strlen (part1);
+                            const char *part2 = country_table[j].english;
+                            size_t part2_len = strlen (part2) + 1;
+                            char buf[64+64];
+
+                            if (!(part1_len + 1 + part2_len <= sizeof (buf)))
+                              abort ();
+                            memcpy (buf, part1, part1_len);
+                            buf[part1_len] = '_';
+                            memcpy (buf + part1_len + 1, part2, part2_len);
+
+                            /* Try the concatenated replacements.  */
+                            result = setlocale (category, buf);
+                            if (result != NULL)
+                              return result;
+                          }
+                    }
+
+                  /* Try omitting the country entirely.  This may set a locale
+                     corresponding to the wrong country, but is better than
+                     failing entirely.  */
+                  {
+                    size_t i;
+
+                    for (i = language_range.lo; i < language_range.hi; i++)
+                      {
+                        /* Try only the language replacement.  */
+                        result =
+                          setlocale (category, language_table[i].english);
+                        if (result != NULL)
+                          return result;
+                      }
+                  }
+                }
+            }
+          }
+      }
+    }
+
+  /* Failed.  */
+  return NULL;
+}
+
+#  elif defined __ANDROID__
+
+/* Like setlocale, but accept also the locale names "C" and "POSIX".  */
+static char *
+setlocale_unixlike (int category, const char *locale)
+{
+  char *result = setlocale_mtsafe (category, locale);
+  if (result == NULL)
+    switch (category)
+      {
+      case LC_CTYPE:
+      case LC_NUMERIC:
+      case LC_TIME:
+      case LC_COLLATE:
+      case LC_MONETARY:
+      case LC_MESSAGES:
+      case LC_ALL:
+      case LC_PAPER:
+      case LC_NAME:
+      case LC_ADDRESS:
+      case LC_TELEPHONE:
+      case LC_MEASUREMENT:
+        if (locale == NULL
+            || strcmp (locale, "C") == 0 || strcmp (locale, "POSIX") == 0)
+          result = (char *) "C";
+        break;
+      default:
+        break;
+      }
+  return result;
+}
+#   define setlocale setlocale_unixlike
+
+#  else
+#   define setlocale_unixlike setlocale_mtsafe
+#  endif
+
+#  if LC_MESSAGES == 1729
+
+/* The system does not store an LC_MESSAGES locale category.  Do it here.  */
+static char lc_messages_name[64] = "C";
+
+/* Like setlocale, but support also LC_MESSAGES.  */
+static char *
+setlocale_single (int category, const char *locale)
+{
+  if (category == LC_MESSAGES)
+    {
+      if (locale != NULL)
+        {
+          lc_messages_name[sizeof (lc_messages_name) - 1] = '\0';
+          strncpy (lc_messages_name, locale, sizeof (lc_messages_name) - 1);
+        }
+      return lc_messages_name;
+    }
+  else
+    return setlocale_unixlike (category, locale);
+}
+
+#  else
+#   define setlocale_single setlocale_unixlike
+#  endif
+
+#  if defined __APPLE__ && defined __MACH__
+
+/* Mapping from language to main territory where that language is spoken.  */
+static char const locales_with_principal_territory[][6 + 1] =
+  {
+                /* Language     Main territory */
+    "ace_ID",   /* Achinese     Indonesia */
+    "af_ZA",    /* Afrikaans    South Africa */
+    "ak_GH",    /* Akan         Ghana */
+    "am_ET",    /* Amharic      Ethiopia */
+    "an_ES",    /* Aragonese    Spain */
+    "ang_GB",   /* Old English  Britain */
+    "arn_CL",   /* Mapudungun   Chile */
+    "as_IN",    /* Assamese     India */
+    "ast_ES",   /* Asturian     Spain */
+    "av_RU",    /* Avaric       Russia */
+    "awa_IN",   /* Awadhi       India */
+    "az_AZ",    /* Azerbaijani  Azerbaijan */
+    "ban_ID",   /* Balinese     Indonesia */
+    "be_BY",    /* Belarusian   Belarus */
+    "bej_SD",   /* Beja         Sudan */
+    "bem_ZM",   /* Bemba        Zambia */
+    "bg_BG",    /* Bulgarian    Bulgaria */
+    "bho_IN",   /* Bhojpuri     India */
+    "bi_VU",    /* Bislama      Vanuatu */
+    "bik_PH",   /* Bikol        Philippines */
+    "bin_NG",   /* Bini         Nigeria */
+    "bm_ML",    /* Bambara      Mali */
+    "bn_IN",    /* Bengali      India */
+    "bo_CN",    /* Tibetan      China */
+    "br_FR",    /* Breton       France */
+    "bs_BA",    /* Bosnian      Bosnia */
+    "bug_ID",   /* Buginese     Indonesia */
+    "ca_ES",    /* Catalan      Spain */
+    "ce_RU",    /* Chechen      Russia */
+    "ceb_PH",   /* Cebuano      Philippines */
+    "co_FR",    /* Corsican     France */
+    "cr_CA",    /* Cree         Canada */
+    /* Don't put "crh_UZ" or "crh_UA" here.  That would be asking for fruitless
+       political discussion.  */
+    "cs_CZ",    /* Czech        Czech Republic */
+    "csb_PL",   /* Kashubian    Poland */
+    "cy_GB",    /* Welsh        Britain */
+    "da_DK",    /* Danish       Denmark */
+    "de_DE",    /* German       Germany */
+    "din_SD",   /* Dinka        Sudan */
+    "doi_IN",   /* Dogri        India */
+    "dsb_DE",   /* Lower Sorbian        Germany */
+    "dv_MV",    /* Divehi       Maldives */
+    "dz_BT",    /* Dzongkha     Bhutan */
+    "ee_GH",    /* Éwé          Ghana */
+    "el_GR",    /* Greek        Greece */
+    /* Don't put "en_GB" or "en_US" here.  That would be asking for fruitless
+       political discussion.  */
+    "es_ES",    /* Spanish      Spain */
+    "et_EE",    /* Estonian     Estonia */
+    "fa_IR",    /* Persian      Iran */
+    "fi_FI",    /* Finnish      Finland */
+    "fil_PH",   /* Filipino     Philippines */
+    "fj_FJ",    /* Fijian       Fiji */
+    "fo_FO",    /* Faroese      Faeroe Islands */
+    "fon_BJ",   /* Fon          Benin */
+    "fr_FR",    /* French       France */
+    "fur_IT",   /* Friulian     Italy */
+    "fy_NL",    /* Western Frisian      Netherlands */
+    "ga_IE",    /* Irish        Ireland */
+    "gd_GB",    /* Scottish Gaelic      Britain */
+    "gon_IN",   /* Gondi        India */
+    "gsw_CH",   /* Swiss German Switzerland */
+    "gu_IN",    /* Gujarati     India */
+    "he_IL",    /* Hebrew       Israel */
+    "hi_IN",    /* Hindi        India */
+    "hil_PH",   /* Hiligaynon   Philippines */
+    "hr_HR",    /* Croatian     Croatia */
+    "hsb_DE",   /* Upper Sorbian        Germany */
+    "ht_HT",    /* Haitian      Haiti */
+    "hu_HU",    /* Hungarian    Hungary */
+    "hy_AM",    /* Armenian     Armenia */
+    "id_ID",    /* Indonesian   Indonesia */
+    "ig_NG",    /* Igbo         Nigeria */
+    "ii_CN",    /* Sichuan Yi   China */
+    "ilo_PH",   /* Iloko        Philippines */
+    "is_IS",    /* Icelandic    Iceland */
+    "it_IT",    /* Italian      Italy */
+    "ja_JP",    /* Japanese     Japan */
+    "jab_NG",   /* Hyam         Nigeria */
+    "jv_ID",    /* Javanese     Indonesia */
+    "ka_GE",    /* Georgian     Georgia */
+    "kab_DZ",   /* Kabyle       Algeria */
+    "kaj_NG",   /* Jju          Nigeria */
+    "kam_KE",   /* Kamba        Kenya */
+    "kmb_AO",   /* Kimbundu     Angola */
+    "kcg_NG",   /* Tyap         Nigeria */
+    "kdm_NG",   /* Kagoma       Nigeria */
+    "kg_CD",    /* Kongo        Democratic Republic of Congo */
+    "kk_KZ",    /* Kazakh       Kazakhstan */
+    "kl_GL",    /* Kalaallisut  Greenland */
+    "km_KH",    /* Central Khmer        Cambodia */
+    "kn_IN",    /* Kannada      India */
+    "ko_KR",    /* Korean       Korea (South) */
+    "kok_IN",   /* Konkani      India */
+    "kr_NG",    /* Kanuri       Nigeria */
+    "kru_IN",   /* Kurukh       India */
+    "ky_KG",    /* Kyrgyz       Kyrgyzstan */
+    "lg_UG",    /* Ganda        Uganda */
+    "li_BE",    /* Limburgish   Belgium */
+    "lo_LA",    /* Laotian      Laos */
+    "lt_LT",    /* Lithuanian   Lithuania */
+    "lu_CD",    /* Luba-Katanga Democratic Republic of Congo */
+    "lua_CD",   /* Luba-Lulua   Democratic Republic of Congo */
+    "luo_KE",   /* Luo          Kenya */
+    "lv_LV",    /* Latvian      Latvia */
+    "mad_ID",   /* Madurese     Indonesia */
+    "mag_IN",   /* Magahi       India */
+    "mai_IN",   /* Maithili     India */
+    "mak_ID",   /* Makasar      Indonesia */
+    "man_ML",   /* Mandingo     Mali */
+    "men_SL",   /* Mende        Sierra Leone */
+    "mfe_MU",   /* Mauritian Creole     Mauritius */
+    "mg_MG",    /* Malagasy     Madagascar */
+    "mi_NZ",    /* Maori        New Zealand */
+    "min_ID",   /* Minangkabau  Indonesia */
+    "mk_MK",    /* Macedonian   North Macedonia */
+    "ml_IN",    /* Malayalam    India */
+    "mn_MN",    /* Mongolian    Mongolia */
+    "mni_IN",   /* Manipuri     India */
+    "mos_BF",   /* Mossi        Burkina Faso */
+    "mr_IN",    /* Marathi      India */
+    "ms_MY",    /* Malay        Malaysia */
+    "mt_MT",    /* Maltese      Malta */
+    "mwr_IN",   /* Marwari      India */
+    "my_MM",    /* Burmese      Myanmar */
+    "na_NR",    /* Nauru        Nauru */
+    "nah_MX",   /* Nahuatl      Mexico */
+    "nap_IT",   /* Neapolitan   Italy */
+    "nb_NO",    /* Norwegian Bokmål    Norway */
+    "nds_DE",   /* Low Saxon    Germany */
+    "ne_NP",    /* Nepali       Nepal */
+    "nl_NL",    /* Dutch        Netherlands */
+    "nn_NO",    /* Norwegian Nynorsk    Norway */
+    "no_NO",    /* Norwegian    Norway */
+    "nr_ZA",    /* South Ndebele        South Africa */
+    "nso_ZA",   /* Northern Sotho       South Africa */
+    "ny_MW",    /* Chichewa     Malawi */
+    "nym_TZ",   /* Nyamwezi     Tanzania */
+    "nyn_UG",   /* Nyankole     Uganda */
+    "oc_FR",    /* Occitan      France */
+    "oj_CA",    /* Ojibwa       Canada */
+    "or_IN",    /* Oriya        India */
+    "pa_IN",    /* Punjabi      India */
+    "pag_PH",   /* Pangasinan   Philippines */
+    "pam_PH",   /* Pampanga     Philippines */
+    "pap_AN",   /* Papiamento   Netherlands Antilles - this line can be removed in 2018 */
+    "pbb_CO",   /* Páez         Colombia */
+    "pl_PL",    /* Polish       Poland */
+    "ps_AF",    /* Pashto       Afghanistan */
+    "pt_PT",    /* Portuguese   Portugal */
+    "raj_IN",   /* Rajasthani   India */
+    "rm_CH",    /* Romansh      Switzerland */
+    "rn_BI",    /* Kirundi      Burundi */
+    "ro_RO",    /* Romanian     Romania */
+    "ru_RU",    /* Russian      Russia */
+    "rw_RW",    /* Kinyarwanda  Rwanda */
+    "sa_IN",    /* Sanskrit     India */
+    "sah_RU",   /* Yakut        Russia */
+    "sas_ID",   /* Sasak        Indonesia */
+    "sat_IN",   /* Santali      India */
+    "sc_IT",    /* Sardinian    Italy */
+    "scn_IT",   /* Sicilian     Italy */
+    "sg_CF",    /* Sango        Central African Republic */
+    "shn_MM",   /* Shan         Myanmar */
+    "si_LK",    /* Sinhala      Sri Lanka */
+    "sid_ET",   /* Sidamo       Ethiopia */
+    "sk_SK",    /* Slovak       Slovakia */
+    "sl_SI",    /* Slovenian    Slovenia */
+    "sm_WS",    /* Samoan       Samoa */
+    "smn_FI",   /* Inari Sami   Finland */
+    "sms_FI",   /* Skolt Sami   Finland */
+    "so_SO",    /* Somali       Somalia */
+    "sq_AL",    /* Albanian     Albania */
+    "sr_RS",    /* Serbian      Serbia */
+    "srr_SN",   /* Serer        Senegal */
+    "suk_TZ",   /* Sukuma       Tanzania */
+    "sus_GN",   /* Susu         Guinea */
+    "sv_SE",    /* Swedish      Sweden */
+    "te_IN",    /* Telugu       India */
+    "tem_SL",   /* Timne        Sierra Leone */
+    "tet_ID",   /* Tetum        Indonesia */
+    "tg_TJ",    /* Tajik        Tajikistan */
+    "th_TH",    /* Thai         Thailand */
+    "ti_ER",    /* Tigrinya     Eritrea */
+    "tiv_NG",   /* Tiv          Nigeria */
+    "tk_TM",    /* Turkmen      Turkmenistan */
+    "tl_PH",    /* Tagalog      Philippines */
+    "to_TO",    /* Tonga        Tonga */
+    "tpi_PG",   /* Tok Pisin    Papua New Guinea */
+    "tr_TR",    /* Turkish      Turkey */
+    "tum_MW",   /* Tumbuka      Malawi */
+    "ug_CN",    /* Uighur       China */
+    "uk_UA",    /* Ukrainian    Ukraine */
+    "umb_AO",   /* Umbundu      Angola */
+    "ur_PK",    /* Urdu         Pakistan */
+    "uz_UZ",    /* Uzbek        Uzbekistan */
+    "ve_ZA",    /* Venda        South Africa */
+    "vi_VN",    /* Vietnamese   Vietnam */
+    "wa_BE",    /* Walloon      Belgium */
+    "wal_ET",   /* Walamo       Ethiopia */
+    "war_PH",   /* Waray        Philippines */
+    "wen_DE",   /* Sorbian      Germany */
+    "yao_MW",   /* Yao          Malawi */
+    "zap_MX"    /* Zapotec      Mexico */
+  };
+
+/* Compare just the language part of two locale names.  */
+static int
+langcmp (const char *locale1, const char *locale2)
+{
+  size_t locale1_len;
+  size_t locale2_len;
+  int cmp;
+
+  {
+    const char *locale1_end = strchr (locale1, '_');
+    if (locale1_end != NULL)
+      locale1_len = locale1_end - locale1;
+    else
+      locale1_len = strlen (locale1);
+  }
+  {
+    const char *locale2_end = strchr (locale2, '_');
+    if (locale2_end != NULL)
+      locale2_len = locale2_end - locale2;
+    else
+      locale2_len = strlen (locale2);
+  }
+
+  if (locale1_len < locale2_len)
+    {
+      cmp = memcmp (locale1, locale2, locale1_len);
+      if (cmp == 0)
+        cmp = -1;
+    }
+  else
+    {
+      cmp = memcmp (locale1, locale2, locale2_len);
+      if (locale1_len > locale2_len && cmp == 0)
+        cmp = 1;
+    }
+
+  return cmp;
+}
+
+/* Given a locale name, return the main locale with the same language,
+   or NULL if not found.
+   For example: "fr_DE" -> "fr_FR".  */
+static const char *
+get_main_locale_with_same_language (const char *locale)
+{
+#   define table locales_with_principal_territory
+  /* The table is sorted.  Perform a binary search.  */
+  size_t hi = sizeof (table) / sizeof (table[0]);
+  size_t lo = 0;
+  while (lo < hi)
+    {
+      /* Invariant:
+         for i < lo, langcmp (table[i], locale) < 0,
+         for i >= hi, langcmp (table[i], locale) > 0.  */
+      size_t mid = (hi + lo) >> 1; /* >= lo, < hi */
+      int cmp = langcmp (table[mid], locale);
+      if (cmp < 0)
+        lo = mid + 1;
+      else if (cmp > 0)
+        hi = mid;
+      else
+        {
+          /* Found an i with
+               langcmp (language_table[i], locale) == 0.
+             Verify that it is the only such i.  */
+          if (mid > lo && langcmp (table[mid - 1], locale) >= 0)
+            abort ();
+          if (mid + 1 < hi && langcmp (table[mid + 1], locale) <= 0)
+            abort ();
+          return table[mid];
+        }
+    }
+#   undef table
+  return NULL;
+}
+
+/* Mapping from territory to main language that is spoken in that territory.  */
+static char const locales_with_principal_language[][6 + 1] =
+  {
+    /* This is based on the set of existing locales in glibc, with duplicates
+       removed, and on the Wikipedia pages named "Languages of <territory>".
+       If in doubt, use the locale that exists in macOS.  For example, the only
+       "*_IN" locale in macOS 10.13 is "hi_IN", so use that.  */
+    /* A useful shell function for producing a line of this table is:
+         func_line ()
+         {
+           # Usage: func_line ll_CC
+           ll=`echo "$1" | sed -e 's|_.*||'`
+           cc=`echo "$1" | sed -e 's|^.*_||'`
+           llx=`sed -n -e "s|^${ll} ||p" < gettext-tools/doc/ISO_639`
+           ccx=`expand gettext-tools/doc/ISO_3166 | sed -n -e "s|^${cc}  *||p"`
+           echo "    \"$1\",    /$X* ${llx} ${ccx} *$X/"
+         }
+     */
+              /* Main language  Territory */
+    "ca_AD",    /* Catalan      Andorra */
+    "ar_AE",    /* Arabic       United Arab Emirates */
+    "ps_AF",    /* Pashto       Afghanistan */
+    "en_AG",    /* English      Antigua and Barbuda */
+    "sq_AL",    /* Albanian     Albania */
+    "hy_AM",    /* Armenian     Armenia */
+    "pap_AN",   /* Papiamento   Netherlands Antilles - this line can be removed in 2018 */
+    "pt_AO",    /* Portuguese   Angola */
+    "es_AR",    /* Spanish      Argentina */
+    "de_AT",    /* German       Austria */
+    "en_AU",    /* English      Australia */
+    /* Aruba has two official languages: "nl_AW", "pap_AW".  */
+    "az_AZ",    /* Azerbaijani  Azerbaijan */
+    "bs_BA",    /* Bosnian      Bosnia */
+    "bn_BD",    /* Bengali      Bangladesh */
+    "nl_BE",    /* Dutch        Belgium */
+    "fr_BF",    /* French       Burkina Faso */
+    "bg_BG",    /* Bulgarian    Bulgaria */
+    "ar_BH",    /* Arabic       Bahrain */
+    "rn_BI",    /* Kirundi      Burundi */
+    "fr_BJ",    /* French       Benin */
+    "es_BO",    /* Spanish      Bolivia */
+    "pt_BR",    /* Portuguese   Brazil */
+    "dz_BT",    /* Dzongkha     Bhutan */
+    "en_BW",    /* English      Botswana */
+    "be_BY",    /* Belarusian   Belarus */
+    "en_CA",    /* English      Canada */
+    "fr_CD",    /* French       Democratic Republic of Congo */
+    "sg_CF",    /* Sango        Central African Republic */
+    "de_CH",    /* German       Switzerland */
+    "es_CL",    /* Spanish      Chile */
+    "zh_CN",    /* Chinese      China */
+    "es_CO",    /* Spanish      Colombia */
+    "es_CR",    /* Spanish      Costa Rica */
+    "es_CU",    /* Spanish      Cuba */
+    /* Curaçao has three official languages: "nl_CW", "pap_CW", "en_CW".  */
+    "el_CY",    /* Greek        Cyprus */
+    "cs_CZ",    /* Czech        Czech Republic */
+    "de_DE",    /* German       Germany */
+    /* Djibouti has two official languages: "ar_DJ" and "fr_DJ".  */
+    "da_DK",    /* Danish       Denmark */
+    "es_DO",    /* Spanish      Dominican Republic */
+    "ar_DZ",    /* Arabic       Algeria */
+    "es_EC",    /* Spanish      Ecuador */
+    "et_EE",    /* Estonian     Estonia */
+    "ar_EG",    /* Arabic       Egypt */
+    "ti_ER",    /* Tigrinya     Eritrea */
+    "es_ES",    /* Spanish      Spain */
+    "am_ET",    /* Amharic      Ethiopia */
+    "fi_FI",    /* Finnish      Finland */
+    /* Fiji has three official languages: "en_FJ", "fj_FJ", "hif_FJ".  */
+    "fo_FO",    /* Faroese      Faeroe Islands */
+    "fr_FR",    /* French       France */
+    "en_GB",    /* English      Britain */
+    "ka_GE",    /* Georgian     Georgia */
+    "en_GH",    /* English      Ghana */
+    "kl_GL",    /* Kalaallisut  Greenland */
+    "fr_GN",    /* French       Guinea */
+    "el_GR",    /* Greek        Greece */
+    "es_GT",    /* Spanish      Guatemala */
+    "zh_HK",    /* Chinese      Hong Kong */
+    "es_HN",    /* Spanish      Honduras */
+    "hr_HR",    /* Croatian     Croatia */
+    "ht_HT",    /* Haitian      Haiti */
+    "hu_HU",    /* Hungarian    Hungary */
+    "id_ID",    /* Indonesian   Indonesia */
+    "en_IE",    /* English      Ireland */
+    "he_IL",    /* Hebrew       Israel */
+    "hi_IN",    /* Hindi        India */
+    "ar_IQ",    /* Arabic       Iraq */
+    "fa_IR",    /* Persian      Iran */
+    "is_IS",    /* Icelandic    Iceland */
+    "it_IT",    /* Italian      Italy */
+    "ar_JO",    /* Arabic       Jordan */
+    "ja_JP",    /* Japanese     Japan */
+    "sw_KE",    /* Swahili      Kenya */
+    "ky_KG",    /* Kyrgyz       Kyrgyzstan */
+    "km_KH",    /* Central Khmer        Cambodia */
+    "ko_KR",    /* Korean       Korea (South) */
+    "ar_KW",    /* Arabic       Kuwait */
+    "kk_KZ",    /* Kazakh       Kazakhstan */
+    "lo_LA",    /* Laotian      Laos */
+    "ar_LB",    /* Arabic       Lebanon */
+    "de_LI",    /* German       Liechtenstein */
+    "si_LK",    /* Sinhala      Sri Lanka */
+    "lt_LT",    /* Lithuanian   Lithuania */
+    /* Luxembourg has three official languages: "lb_LU", "fr_LU", "de_LU".  */
+    "lv_LV",    /* Latvian      Latvia */
+    "ar_LY",    /* Arabic       Libya */
+    "ar_MA",    /* Arabic       Morocco */
+    "sr_ME",    /* Serbian      Montenegro */
+    "mg_MG",    /* Malagasy     Madagascar */
+    "mk_MK",    /* Macedonian   North Macedonia */
+    "fr_ML",    /* French       Mali */
+    "my_MM",    /* Burmese      Myanmar */
+    "mn_MN",    /* Mongolian    Mongolia */
+    "mt_MT",    /* Maltese      Malta */
+    "mfe_MU",   /* Mauritian Creole     Mauritius */
+    "dv_MV",    /* Divehi       Maldives */
+    "ny_MW",    /* Chichewa     Malawi */
+    "es_MX",    /* Spanish      Mexico */
+    "ms_MY",    /* Malay        Malaysia */
+    "en_NG",    /* English      Nigeria */
+    "es_NI",    /* Spanish      Nicaragua */
+    "nl_NL",    /* Dutch        Netherlands */
+    "no_NO",    /* Norwegian    Norway */
+    "ne_NP",    /* Nepali       Nepal */
+    "na_NR",    /* Nauru        Nauru */
+    "niu_NU",   /* Niuean       Niue */
+    "en_NZ",    /* English      New Zealand */
+    "ar_OM",    /* Arabic       Oman */
+    "es_PA",    /* Spanish      Panama */
+    "es_PE",    /* Spanish      Peru */
+    "tpi_PG",   /* Tok Pisin    Papua New Guinea */
+    "fil_PH",   /* Filipino     Philippines */
+    "pa_PK",    /* Punjabi      Pakistan */
+    "pl_PL",    /* Polish       Poland */
+    "es_PR",    /* Spanish      Puerto Rico */
+    "pt_PT",    /* Portuguese   Portugal */
+    "es_PY",    /* Spanish      Paraguay */
+    "ar_QA",    /* Arabic       Qatar */
+    "ro_RO",    /* Romanian     Romania */
+    "sr_RS",    /* Serbian      Serbia */
+    "ru_RU",    /* Russian      Russia */
+    "rw_RW",    /* Kinyarwanda  Rwanda */
+    "ar_SA",    /* Arabic       Saudi Arabia */
+    "en_SC",    /* English      Seychelles */
+    "ar_SD",    /* Arabic       Sudan */
+    "sv_SE",    /* Swedish      Sweden */
+    "en_SG",    /* English      Singapore */
+    "sl_SI",    /* Slovenian    Slovenia */
+    "sk_SK",    /* Slovak       Slovakia */
+    "en_SL",    /* English      Sierra Leone */
+    "fr_SN",    /* French       Senegal */
+    "so_SO",    /* Somali       Somalia */
+    "ar_SS",    /* Arabic       South Sudan */
+    "es_SV",    /* Spanish      El Salvador */
+    "ar_SY",    /* Arabic       Syria */
+    "th_TH",    /* Thai         Thailand */
+    "tg_TJ",    /* Tajik        Tajikistan */
+    "tk_TM",    /* Turkmen      Turkmenistan */
+    "ar_TN",    /* Arabic       Tunisia */
+    "to_TO",    /* Tonga        Tonga */
+    "tr_TR",    /* Turkish      Turkey */
+    "zh_TW",    /* Chinese      Taiwan */
+    "sw_TZ",    /* Swahili      Tanzania */
+    "uk_UA",    /* Ukrainian    Ukraine */
+    "lg_UG",    /* Ganda        Uganda */
+    "en_US",    /* English      United States of America */
+    "es_UY",    /* Spanish      Uruguay */
+    "uz_UZ",    /* Uzbek        Uzbekistan */
+    "es_VE",    /* Spanish      Venezuela */
+    "vi_VN",    /* Vietnamese   Vietnam */
+    "bi_VU",    /* Bislama      Vanuatu */
+    "sm_WS",    /* Samoan       Samoa */
+    "ar_YE",    /* Arabic       Yemen */
+    "en_ZA",    /* English      South Africa */
+    "en_ZM",    /* English      Zambia */
+    "en_ZW"     /* English      Zimbabwe */
+  };
+
+/* Compare just the territory part of two locale names.  */
+static int
+terrcmp (const char *locale1, const char *locale2)
+{
+  const char *territory1 = strrchr (locale1, '_') + 1;
+  const char *territory2 = strrchr (locale2, '_') + 1;
+
+  return strcmp (territory1, territory2);
+}
+
+/* Given a locale name, return the locale corresponding to the main language
+   with the same territory, or NULL if not found.
+   For example: "fr_DE" -> "de_DE".  */
+static const char *
+get_main_locale_with_same_territory (const char *locale)
+{
+  if (strrchr (locale, '_') != NULL)
+    {
+#   define table locales_with_principal_language
+      /* The table is sorted.  Perform a binary search.  */
+      size_t hi = sizeof (table) / sizeof (table[0]);
+      size_t lo = 0;
+      while (lo < hi)
+        {
+          /* Invariant:
+             for i < lo, terrcmp (table[i], locale) < 0,
+             for i >= hi, terrcmp (table[i], locale) > 0.  */
+          size_t mid = (hi + lo) >> 1; /* >= lo, < hi */
+          int cmp = terrcmp (table[mid], locale);
+          if (cmp < 0)
+            lo = mid + 1;
+          else if (cmp > 0)
+            hi = mid;
+          else
+            {
+              /* Found an i with
+                   terrcmp (language_table[i], locale) == 0.
+                 Verify that it is the only such i.  */
+              if (mid > lo && terrcmp (table[mid - 1], locale) >= 0)
+                abort ();
+              if (mid + 1 < hi && terrcmp (table[mid + 1], locale) <= 0)
+                abort ();
+              return table[mid];
+            }
+        }
+#   undef table
+    }
+  return NULL;
+}
+
+#  endif
+
+char *
+setlocale_improved (int category, const char *locale)
+{
+  if (locale != NULL && locale[0] == '\0')
+    {
+      /* A request to the set the current locale to the default locale.  */
+      if (category == LC_ALL)
+        {
+          /* Set LC_CTYPE first.  Then the other categories.  */
+          static int const categories[] =
+            {
+              LC_CTYPE,
+              LC_NUMERIC,
+              LC_TIME,
+              LC_COLLATE,
+              LC_MONETARY,
+              LC_MESSAGES
+            };
+          char *saved_locale;
+          const char *base_name;
+          unsigned int i;
+
+          /* Back up the old locale, in case one of the steps fails.  */
+          saved_locale = setlocale (LC_ALL, NULL);
+          if (saved_locale == NULL)
+            return NULL;
+          saved_locale = strdup (saved_locale);
+          if (saved_locale == NULL)
+            return NULL;
+
+          /* Set LC_CTYPE category.  Set all other categories (except possibly
+             LC_MESSAGES) to the same value in the same call; this is likely to
+             save calls.  */
+          base_name =
+            gl_locale_name_environ (LC_CTYPE, category_to_name (LC_CTYPE));
+          if (base_name == NULL)
+            base_name = gl_locale_name_default ();
+
+          if (setlocale_unixlike (LC_ALL, base_name) != NULL)
+            {
+              /* LC_CTYPE category already set.  */
+              i = 1;
+            }
+          else
+            {
+              /* On Mac OS X, "UTF-8" is a valid locale name for LC_CTYPE but
+                 not for LC_ALL.  Therefore this call may fail.  So, try
+                 another base_name.  */
+              base_name = "C";
+              if (setlocale_unixlike (LC_ALL, base_name) == NULL)
+                goto fail;
+              i = 0;
+            }
+#  if defined _WIN32 && ! defined __CYGWIN__
+          /* On native Windows, setlocale(LC_ALL,...) may succeed but set the
+             LC_CTYPE category to an invalid value ("C") when it does not
+             support the specified encoding.  Report a failure instead.  */
+          if (strchr (base_name, '.') != NULL
+              && strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+            goto fail;
+#  endif
+
+          for (; i < sizeof (categories) / sizeof (categories[0]); i++)
+            {
+              int cat = categories[i];
+              const char *name;
+
+              name = gl_locale_name_environ (cat, category_to_name (cat));
+              if (name == NULL)
+                name = gl_locale_name_default ();
+
+              /* If name is the same as base_name, it has already been set
+                 through the setlocale call before the loop.  */
+              if (strcmp (name, base_name) != 0
+#  if LC_MESSAGES == 1729
+                  || cat == LC_MESSAGES
+#  endif
+                 )
+                if (setlocale_single (cat, name) == NULL)
+#  if defined __APPLE__ && defined __MACH__
+                  {
+                    /* On Mac OS X 10.13, some locales can be set through
+                       System Preferences > Language & Region, that are not
+                       supported by libc.  The system's setlocale() falls
+                       back to "C" for these locale categories.  We can do
+                       better, by trying an existing locale with the same
+                       language or an existing locale with the same territory.
+                       If we can't, print a warning, to limit user
+                       expectations.  */
+                    int warn = 0;
+
+                    if (cat == LC_CTYPE)
+                      warn = (setlocale_single (cat, "UTF-8") == NULL);
+                    else if (cat == LC_MESSAGES)
+                      {
+#   if HAVE_CFLOCALECOPYPREFERREDLANGUAGES || HAVE_CFPREFERENCESCOPYAPPVALUE /* MacOS X 10.4 or newer */
+                        /* Take the primary language preference.  */
+#    if HAVE_CFLOCALECOPYPREFERREDLANGUAGES /* MacOS X 10.5 or newer */
+                        CFArrayRef prefArray = CFLocaleCopyPreferredLanguages ();
+#    elif HAVE_CFPREFERENCESCOPYAPPVALUE /* MacOS X 10.4 or newer */
+                        CFTypeRef preferences =
+                          CFPreferencesCopyAppValue (CFSTR ("AppleLanguages"),
+                                                     kCFPreferencesCurrentApplication);
+                        if (preferences != NULL
+                            && CFGetTypeID (preferences) == CFArrayGetTypeID ())
+                          {
+                            CFArrayRef prefArray = (CFArrayRef)preferences;
+#    endif
+                            int n = CFArrayGetCount (prefArray);
+                            if (n > 0)
+                              {
+                                char buf[256];
+                                CFTypeRef element = CFArrayGetValueAtIndex (prefArray, 0);
+                                if (element != NULL
+                                    && CFGetTypeID (element) == CFStringGetTypeID ()
+                                    && CFStringGetCString ((CFStringRef)element,
+                                                           buf, sizeof (buf),
+                                                           kCFStringEncodingASCII))
+                                  {
+                                    /* Remove the country.
+                                       E.g. "zh-Hans-DE" -> "zh-Hans".  */
+                                    char *last_minus = strrchr (buf, '-');
+                                    if (last_minus != NULL)
+                                      *last_minus = '\0';
+
+                                    /* Convert to Unix locale name.
+                                       E.g. "zh-Hans" -> "zh_CN".  */
+                                    gl_locale_name_canonicalize (buf);
+
+                                    /* Try setlocale with this value.  */
+                                    if (setlocale_single (cat, buf) == NULL)
+                                      {
+                                        const char *last_try =
+                                          get_main_locale_with_same_language (buf);
+
+                                        if (last_try == NULL
+                                            || setlocale_single (cat, last_try) == NULL)
+                                          warn = 1;
+                                      }
+                                  }
+                              }
+#    if HAVE_CFLOCALECOPYPREFERREDLANGUAGES /* MacOS X 10.5 or newer */
+                        CFRelease (prefArray);
+#    elif HAVE_CFPREFERENCESCOPYAPPVALUE /* MacOS X 10.4 or newer */
+                          }
+#    endif
+#   else
+                        const char *last_try =
+                          get_main_locale_with_same_language (name);
+
+                        if (last_try == NULL
+                            || setlocale_single (cat, last_try) == NULL)
+                          warn = 1;
+#   endif
+                      }
+                    else
+                      {
+                        /* For LC_NUMERIC, the application should use the locale
+                           properties kCFLocaleDecimalSeparator,
+                           kCFLocaleGroupingSeparator.
+                           For LC_TIME, the application should use the locale
+                           property kCFLocaleCalendarIdentifier.
+                           For LC_COLLATE, the application should use the locale
+                           properties kCFLocaleCollationIdentifier,
+                           kCFLocaleCollatorIdentifier.
+                           For LC_MONETARY, the applicationshould use the locale
+                           properties kCFLocaleCurrencySymbol,
+                           kCFLocaleCurrencyCode.
+                           But since most applications don't have macOS specific
+                           code like this, try an existing locale with the same
+                           territory.  */
+                        const char *last_try =
+                          get_main_locale_with_same_territory (name);
+
+                        if (last_try == NULL
+                            || setlocale_single (cat, last_try) == NULL)
+                          warn = 1;
+                      }
+
+                    if (warn)
+                      {
+                        /* Warn only if the environment variable
+                           SETLOCALE_VERBOSE is set.  Otherwise these warnings
+                           are just annoyances, since normal users won't invoke
+                           'localedef'.  */
+                        const char *verbose = getenv ("SETLOCALE_VERBOSE");
+                        if (verbose != NULL && verbose[0] != '\0')
+                          fprintf (stderr,
+                                   "Warning: Failed to set locale category %s to %s.\n",
+                                   category_to_name (cat), name);
+                      }
+                  }
+#  else
+                  goto fail;
+#  endif
+            }
+
+          /* All steps were successful.  */
+          free (saved_locale);
+          return setlocale (LC_ALL, NULL);
+
+        fail:
+          if (saved_locale[0] != '\0') /* don't risk an endless recursion */
+            setlocale (LC_ALL, saved_locale);
+          free (saved_locale);
+          return NULL;
+        }
+      else
+        {
+          const char *name =
+            gl_locale_name_environ (category, category_to_name (category));
+          if (name == NULL)
+            name = gl_locale_name_default ();
+
+          return setlocale_single (category, name);
+        }
+    }
+  else
+    {
+#  if defined _WIN32 && ! defined __CYGWIN__
+      if (category == LC_ALL && locale != NULL && strchr (locale, '.') != NULL)
+        {
+          char *saved_locale;
+
+          /* Back up the old locale.  */
+          saved_locale = setlocale (LC_ALL, NULL);
+          if (saved_locale == NULL)
+            return NULL;
+          saved_locale = strdup (saved_locale);
+          if (saved_locale == NULL)
+            return NULL;
+
+          if (setlocale_unixlike (LC_ALL, locale) == NULL)
+            {
+              free (saved_locale);
+              return NULL;
+            }
+
+          /* On native Windows, setlocale(LC_ALL,...) may succeed but set the
+             LC_CTYPE category to an invalid value ("C") when it does not
+             support the specified encoding.  Report a failure instead.  */
+          if (strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+            {
+              if (saved_locale[0] != '\0') /* don't risk an endless recursion */
+                setlocale (LC_ALL, saved_locale);
+              free (saved_locale);
+              return NULL;
+            }
+
+          /* It was really successful.  */
+          free (saved_locale);
+          return setlocale (LC_ALL, NULL);
+        }
+      else
+#  endif
+        return setlocale_single (category, locale);
+    }
+}
+
+# endif /* NEED_SETLOCALE_IMPROVED */
+
+#endif
diff --git a/src/grep/gnulib-tests/setsockopt.c b/src/grep/gnulib-tests/setsockopt.c
new file mode 100644
index 0000000..10b1e90
--- /dev/null
+++ b/src/grep/gnulib-tests/setsockopt.c
@@ -0,0 +1,65 @@
+/* setsockopt.c --- wrappers for Windows setsockopt function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get struct timeval. */
+#include <sys/time.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef setsockopt
+
+int
+rpl_setsockopt (int fd, int level, int optname, const void *optval, socklen_t optlen)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+  int r;
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      if (level == SOL_SOCKET
+          && (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
+        {
+          const struct timeval *tv = optval;
+          int milliseconds = tv->tv_sec * 1000 + tv->tv_usec / 1000;
+          optval = &milliseconds;
+          r = setsockopt (sock, level, optname, optval, sizeof (int));
+        }
+      else
+        {
+          r = setsockopt (sock, level, optname, optval, optlen);
+        }
+
+      if (r < 0)
+        set_winsock_errno ();
+
+      return r;
+    }
+}
diff --git a/src/grep/gnulib-tests/sig-handler.c b/src/grep/gnulib-tests/sig-handler.c
new file mode 100644
index 0000000..6257914
--- /dev/null
+++ b/src/grep/gnulib-tests/sig-handler.c
@@ -0,0 +1,21 @@
+/* Convenience declarations when working with <signal.h>.
+
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define SIG_HANDLER_INLINE _GL_EXTERN_INLINE
+#include "sig-handler.h"
diff --git a/src/grep/gnulib-tests/sig-handler.h b/src/grep/gnulib-tests/sig-handler.h
new file mode 100644
index 0000000..0ce5897
--- /dev/null
+++ b/src/grep/gnulib-tests/sig-handler.h
@@ -0,0 +1,51 @@
+/* Convenience declarations when working with <signal.h>.
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_SIG_HANDLER_H
+#define _GL_SIG_HANDLER_H
+
+#include <signal.h>
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef SIG_HANDLER_INLINE
+# define SIG_HANDLER_INLINE _GL_INLINE
+#endif
+
+/* Convenience type when working with signal handlers.  */
+typedef void (*sa_handler_t) (int);
+
+/* Return the handler of a signal, as a sa_handler_t value regardless
+   of its true type.  The resulting function can be compared to
+   special values like SIG_IGN but it is not portable to call it.  */
+SIG_HANDLER_INLINE sa_handler_t _GL_ATTRIBUTE_PURE
+get_handler (struct sigaction const *a)
+{
+  /* POSIX says that special values like SIG_IGN can only occur when
+     action.sa_flags does not contain SA_SIGINFO.  But in Linux 2.4,
+     for example, sa_sigaction and sa_handler are aliases and a signal
+     is ignored if sa_sigaction (after casting) equals SIG_IGN.  In
+     this case, this implementation relies on the fact that the two
+     are aliases, and simply returns sa_handler.  */
+  return a->sa_handler;
+}
+
+_GL_INLINE_HEADER_END
+
+#endif /* _GL_SIG_HANDLER_H */
diff --git a/src/grep/gnulib-tests/sigaction.c b/src/grep/gnulib-tests/sigaction.c
new file mode 100644
index 0000000..e1ace46
--- /dev/null
+++ b/src/grep/gnulib-tests/sigaction.c
@@ -0,0 +1,204 @@
+/* POSIX compatible signal blocking.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+   Written by Eric Blake <ebb9@byu.net>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <signal.h>
+
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+/* This implementation of sigaction is tailored to native Windows behavior:
+   signal() has SysV semantics (ie. the handler is uninstalled before
+   it is invoked).  This is an inherent data race if an asynchronous
+   signal is sent twice in a row before we can reinstall our handler,
+   but there's nothing we can do about it.  Meanwhile, sigprocmask()
+   is not present, and while we can use the gnulib replacement to
+   provide critical sections, it too suffers from potential data races
+   in the face of an ill-timed asynchronous signal.  And we compound
+   the situation by reading static storage in a signal handler, which
+   POSIX warns is not generically async-signal-safe.  Oh well.
+
+   Additionally:
+     - We don't implement SA_NOCLDSTOP or SA_NOCLDWAIT, because SIGCHLD
+       is not defined.
+     - We don't implement SA_ONSTACK, because sigaltstack() is not present.
+     - We ignore SA_RESTART, because blocking native Windows API calls are
+       not interrupted anyway when an asynchronous signal occurs, and the
+       MSVCRT runtime never sets errno to EINTR.
+     - We don't implement SA_SIGINFO because it is impossible to do so
+       portably.
+
+   POSIX states that an application should not mix signal() and
+   sigaction().  We support the use of signal() within the gnulib
+   sigprocmask() substitute, but all other application code linked
+   with this module should stick with only sigaction().  */
+
+/* Check some of our assumptions.  */
+#if defined SIGCHLD || defined HAVE_SIGALTSTACK || defined HAVE_SIGINTERRUPT
+# error "Revisit the assumptions made in the sigaction module"
+#endif
+
+/* Out-of-range substitutes make a good fallback for uncatchable
+   signals.  */
+#ifndef SIGKILL
+# define SIGKILL (-1)
+#endif
+#ifndef SIGSTOP
+# define SIGSTOP (-1)
+#endif
+
+/* On native Windows, as of 2008, the signal SIGABRT_COMPAT is an alias
+   for the signal SIGABRT.  Only one signal handler is stored for both
+   SIGABRT and SIGABRT_COMPAT.  SIGABRT_COMPAT is not a signal of its own.  */
+#if defined _WIN32 && ! defined __CYGWIN__
+# undef SIGABRT_COMPAT
+# define SIGABRT_COMPAT 6
+#endif
+
+/* A signal handler.  */
+typedef void (*handler_t) (int signal);
+
+/* Set of current actions.  If sa_handler for an entry is NULL, then
+   that signal is not currently handled by the sigaction handler.  */
+static struct sigaction volatile action_array[NSIG] /* = 0 */;
+
+/* Signal handler that is installed for signals.  */
+static void
+sigaction_handler (int sig)
+{
+  handler_t handler;
+  sigset_t mask;
+  sigset_t oldmask;
+  int saved_errno = errno;
+  if (sig < 0 || NSIG <= sig || !action_array[sig].sa_handler)
+    {
+      /* Unexpected situation; be careful to avoid recursive abort.  */
+      if (sig == SIGABRT)
+        signal (SIGABRT, SIG_DFL);
+      abort ();
+    }
+
+  /* Reinstall the signal handler when required; otherwise update the
+     bookkeeping so that the user's handler may call sigaction and get
+     accurate results.  We know the signal isn't currently blocked, or
+     we wouldn't be in its handler, therefore we know that we are not
+     interrupting a sigaction() call.  There is a race where any
+     asynchronous instance of the same signal occurring before we
+     reinstall the handler will trigger the default handler; oh
+     well.  */
+  handler = action_array[sig].sa_handler;
+  if ((action_array[sig].sa_flags & SA_RESETHAND) == 0)
+    signal (sig, sigaction_handler);
+  else
+    action_array[sig].sa_handler = NULL;
+
+  /* Block appropriate signals.  */
+  mask = action_array[sig].sa_mask;
+  if ((action_array[sig].sa_flags & SA_NODEFER) == 0)
+    sigaddset (&mask, sig);
+  sigprocmask (SIG_BLOCK, &mask, &oldmask);
+
+  /* Invoke the user's handler, then restore prior mask.  */
+  errno = saved_errno;
+  handler (sig);
+  saved_errno = errno;
+  sigprocmask (SIG_SETMASK, &oldmask, NULL);
+  errno = saved_errno;
+}
+
+/* Change and/or query the action that will be taken on delivery of
+   signal SIG.  If not NULL, ACT describes the new behavior.  If not
+   NULL, OACT is set to the prior behavior.  Return 0 on success, or
+   set errno and return -1 on failure.  */
+int
+sigaction (int sig, const struct sigaction *restrict act,
+           struct sigaction *restrict oact)
+{
+  sigset_t mask;
+  sigset_t oldmask;
+  int saved_errno;
+
+  if (sig < 0 || NSIG <= sig || sig == SIGKILL || sig == SIGSTOP
+      || (act && act->sa_handler == SIG_ERR))
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+#ifdef SIGABRT_COMPAT
+  if (sig == SIGABRT_COMPAT)
+    sig = SIGABRT;
+#endif
+
+  /* POSIX requires sigaction() to be async-signal-safe.  In other
+     words, if an asynchronous signal can occur while we are anywhere
+     inside this function, the user's handler could then call
+     sigaction() recursively and expect consistent results.  We meet
+     this rule by using sigprocmask to block all signals before
+     modifying any data structure that could be read from a signal
+     handler; this works since we know that the gnulib sigprocmask
+     replacement does not try to use sigaction() from its handler.  */
+  if (!act && !oact)
+    return 0;
+  sigfillset (&mask);
+  sigprocmask (SIG_BLOCK, &mask, &oldmask);
+  if (oact)
+    {
+      if (action_array[sig].sa_handler)
+        *oact = action_array[sig];
+      else
+        {
+          /* Safe to change the handler at will here, since all
+             signals are currently blocked.  */
+          oact->sa_handler = signal (sig, SIG_DFL);
+          if (oact->sa_handler == SIG_ERR)
+            goto failure;
+          signal (sig, oact->sa_handler);
+          oact->sa_flags = SA_RESETHAND | SA_NODEFER;
+          sigemptyset (&oact->sa_mask);
+        }
+    }
+
+  if (act)
+    {
+      /* Safe to install the handler before updating action_array,
+         since all signals are currently blocked.  */
+      if (act->sa_handler == SIG_DFL || act->sa_handler == SIG_IGN)
+        {
+          if (signal (sig, act->sa_handler) == SIG_ERR)
+            goto failure;
+          action_array[sig].sa_handler = NULL;
+        }
+      else
+        {
+          if (signal (sig, sigaction_handler) == SIG_ERR)
+            goto failure;
+          action_array[sig] = *act;
+        }
+    }
+  sigprocmask (SIG_SETMASK, &oldmask, NULL);
+  return 0;
+
+ failure:
+  saved_errno = errno;
+  sigprocmask (SIG_SETMASK, &oldmask, NULL);
+  errno = saved_errno;
+  return -1;
+}
diff --git a/src/grep/gnulib-tests/signature.h b/src/grep/gnulib-tests/signature.h
new file mode 100644
index 0000000..f791783
--- /dev/null
+++ b/src/grep/gnulib-tests/signature.h
@@ -0,0 +1,48 @@
+/* Macro for checking that a function declaration is compliant.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef SIGNATURE_CHECK
+
+/* Check that the function FN takes the specified arguments ARGS with
+   a return type of RET.  This header is designed to be included after
+   <config.h> and the one system header that is supposed to contain
+   the function being checked, but prior to any other system headers
+   that are necessary for the unit test.  Therefore, this file does
+   not include any system headers, nor reference anything outside of
+   the macro arguments.  For an example, if foo.h should provide:
+
+   extern int foo (char, float);
+
+   then the unit test named test-foo.c would start out with:
+
+   #include <config.h>
+   #include <foo.h>
+   #include "signature.h"
+   SIGNATURE_CHECK (foo, int, (char, float));
+   #include <other.h>
+   ...
+*/
+# define SIGNATURE_CHECK(fn, ret, args) \
+  SIGNATURE_CHECK1 (fn, ret, args, __LINE__)
+
+/* Necessary to allow multiple SIGNATURE_CHECK lines in a unit test.
+   Note that the checks must not occupy the same line.  */
+# define SIGNATURE_CHECK1(fn, ret, args, id) \
+  SIGNATURE_CHECK2 (fn, ret, args, id) /* macroexpand line */
+# define SIGNATURE_CHECK2(fn, ret, args, id) \
+  static ret (* _GL_UNUSED signature_check ## id) args = fn
+
+#endif /* SIGNATURE_CHECK */
diff --git a/src/grep/gnulib-tests/sigprocmask.c b/src/grep/gnulib-tests/sigprocmask.c
new file mode 100644
index 0000000..c479204
--- /dev/null
+++ b/src/grep/gnulib-tests/sigprocmask.c
@@ -0,0 +1,349 @@
+/* POSIX compatible signal blocking.
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2006.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <signal.h>
+
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+/* We assume that a platform without POSIX signal blocking functions
+   also does not have the POSIX sigaction() function, only the
+   signal() function.  We also assume signal() has SysV semantics,
+   where any handler is uninstalled prior to being invoked.  This is
+   true for native Windows platforms.  */
+
+/* We use raw signal(), but also provide a wrapper rpl_signal() so
+   that applications can query or change a blocked signal.  */
+#undef signal
+
+/* Provide invalid signal numbers as fallbacks if the uncatchable
+   signals are not defined.  */
+#ifndef SIGKILL
+# define SIGKILL (-1)
+#endif
+#ifndef SIGSTOP
+# define SIGSTOP (-1)
+#endif
+
+/* On native Windows, as of 2008, the signal SIGABRT_COMPAT is an alias
+   for the signal SIGABRT.  Only one signal handler is stored for both
+   SIGABRT and SIGABRT_COMPAT.  SIGABRT_COMPAT is not a signal of its own.  */
+#if defined _WIN32 && ! defined __CYGWIN__
+# undef SIGABRT_COMPAT
+# define SIGABRT_COMPAT 6
+#endif
+#ifdef SIGABRT_COMPAT
+# define SIGABRT_COMPAT_MASK (1U << SIGABRT_COMPAT)
+#else
+# define SIGABRT_COMPAT_MASK 0
+#endif
+
+typedef void (*handler_t) (int);
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static handler_t
+signal_nothrow (int sig, handler_t handler)
+{
+  handler_t result;
+
+  TRY_MSVC_INVAL
+    {
+      result = signal (sig, handler);
+    }
+  CATCH_MSVC_INVAL
+    {
+      result = SIG_ERR;
+      errno = EINVAL;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+# define signal signal_nothrow
+#endif
+
+/* Handling of gnulib defined signals.  */
+
+#if GNULIB_defined_SIGPIPE
+static handler_t SIGPIPE_handler = SIG_DFL;
+#endif
+
+#if GNULIB_defined_SIGPIPE
+static handler_t
+ext_signal (int sig, handler_t handler)
+{
+  switch (sig)
+    {
+    case SIGPIPE:
+      {
+        handler_t old_handler = SIGPIPE_handler;
+        SIGPIPE_handler = handler;
+        return old_handler;
+      }
+    default: /* System defined signal */
+      return signal (sig, handler);
+    }
+}
+# undef signal
+# define signal ext_signal
+#endif
+
+int
+sigismember (const sigset_t *set, int sig)
+{
+  if (sig >= 0 && sig < NSIG)
+    {
+      #ifdef SIGABRT_COMPAT
+      if (sig == SIGABRT_COMPAT)
+        sig = SIGABRT;
+      #endif
+
+      return (*set >> sig) & 1;
+    }
+  else
+    return 0;
+}
+
+int
+sigemptyset (sigset_t *set)
+{
+  *set = 0;
+  return 0;
+}
+
+int
+sigaddset (sigset_t *set, int sig)
+{
+  if (sig >= 0 && sig < NSIG)
+    {
+      #ifdef SIGABRT_COMPAT
+      if (sig == SIGABRT_COMPAT)
+        sig = SIGABRT;
+      #endif
+
+      *set |= 1U << sig;
+      return 0;
+    }
+  else
+    {
+      errno = EINVAL;
+      return -1;
+    }
+}
+
+int
+sigdelset (sigset_t *set, int sig)
+{
+  if (sig >= 0 && sig < NSIG)
+    {
+      #ifdef SIGABRT_COMPAT
+      if (sig == SIGABRT_COMPAT)
+        sig = SIGABRT;
+      #endif
+
+      *set &= ~(1U << sig);
+      return 0;
+    }
+  else
+    {
+      errno = EINVAL;
+      return -1;
+    }
+}
+
+
+int
+sigfillset (sigset_t *set)
+{
+  *set = ((2U << (NSIG - 1)) - 1) & ~ SIGABRT_COMPAT_MASK;
+  return 0;
+}
+
+/* Set of currently blocked signals.  */
+static volatile sigset_t blocked_set /* = 0 */;
+
+/* Set of currently blocked and pending signals.  */
+static volatile sig_atomic_t pending_array[NSIG] /* = { 0 } */;
+
+/* Signal handler that is installed for blocked signals.  */
+static void
+blocked_handler (int sig)
+{
+  /* Reinstall the handler, in case the signal occurs multiple times
+     while blocked.  There is an inherent race where an asynchronous
+     signal in between when the kernel uninstalled the handler and
+     when we reinstall it will trigger the default handler; oh
+     well.  */
+  signal (sig, blocked_handler);
+  if (sig >= 0 && sig < NSIG)
+    pending_array[sig] = 1;
+}
+
+int
+sigpending (sigset_t *set)
+{
+  sigset_t pending = 0;
+  int sig;
+
+  for (sig = 0; sig < NSIG; sig++)
+    if (pending_array[sig])
+      pending |= 1U << sig;
+  *set = pending;
+  return 0;
+}
+
+/* The previous signal handlers.
+   Only the array elements corresponding to blocked signals are relevant.  */
+static volatile handler_t old_handlers[NSIG];
+
+int
+sigprocmask (int operation, const sigset_t *set, sigset_t *old_set)
+{
+  if (old_set != NULL)
+    *old_set = blocked_set;
+
+  if (set != NULL)
+    {
+      sigset_t new_blocked_set;
+      sigset_t to_unblock;
+      sigset_t to_block;
+
+      switch (operation)
+        {
+        case SIG_BLOCK:
+          new_blocked_set = blocked_set | *set;
+          break;
+        case SIG_SETMASK:
+          new_blocked_set = *set;
+          break;
+        case SIG_UNBLOCK:
+          new_blocked_set = blocked_set & ~*set;
+          break;
+        default:
+          errno = EINVAL;
+          return -1;
+        }
+      to_unblock = blocked_set & ~new_blocked_set;
+      to_block = new_blocked_set & ~blocked_set;
+
+      if (to_block != 0)
+        {
+          int sig;
+
+          for (sig = 0; sig < NSIG; sig++)
+            if ((to_block >> sig) & 1)
+              {
+                pending_array[sig] = 0;
+                if ((old_handlers[sig] = signal (sig, blocked_handler)) != SIG_ERR)
+                  blocked_set |= 1U << sig;
+              }
+        }
+
+      if (to_unblock != 0)
+        {
+          sig_atomic_t received[NSIG];
+          int sig;
+
+          for (sig = 0; sig < NSIG; sig++)
+            if ((to_unblock >> sig) & 1)
+              {
+                if (signal (sig, old_handlers[sig]) != blocked_handler)
+                  /* The application changed a signal handler while the signal
+                     was blocked, bypassing our rpl_signal replacement.
+                     We don't support this.  */
+                  abort ();
+                received[sig] = pending_array[sig];
+                blocked_set &= ~(1U << sig);
+                pending_array[sig] = 0;
+              }
+            else
+              received[sig] = 0;
+
+          for (sig = 0; sig < NSIG; sig++)
+            if (received[sig])
+              raise (sig);
+        }
+    }
+  return 0;
+}
+
+/* Install the handler FUNC for signal SIG, and return the previous
+   handler.  */
+handler_t
+rpl_signal (int sig, handler_t handler)
+{
+  /* We must provide a wrapper, so that a user can query what handler
+     they installed even if that signal is currently blocked.  */
+  if (sig >= 0 && sig < NSIG && sig != SIGKILL && sig != SIGSTOP
+      && handler != SIG_ERR)
+    {
+      #ifdef SIGABRT_COMPAT
+      if (sig == SIGABRT_COMPAT)
+        sig = SIGABRT;
+      #endif
+
+      if (blocked_set & (1U << sig))
+        {
+          /* POSIX states that sigprocmask and signal are both
+             async-signal-safe.  This is not true of our
+             implementation - there is a slight data race where an
+             asynchronous interrupt on signal A can occur after we
+             install blocked_handler but before we have updated
+             old_handlers for signal B, such that handler A can see
+             stale information if it calls signal(B).  Oh well -
+             signal handlers really shouldn't try to manipulate the
+             installed handlers of unrelated signals.  */
+          handler_t result = old_handlers[sig];
+          old_handlers[sig] = handler;
+          return result;
+        }
+      else
+        return signal (sig, handler);
+    }
+  else
+    {
+      errno = EINVAL;
+      return SIG_ERR;
+    }
+}
+
+#if GNULIB_defined_SIGPIPE
+/* Raise the signal SIGPIPE.  */
+int
+_gl_raise_SIGPIPE (void)
+{
+  if (blocked_set & (1U << SIGPIPE))
+    pending_array[SIGPIPE] = 1;
+  else
+    {
+      handler_t handler = SIGPIPE_handler;
+      if (handler == SIG_DFL)
+        exit (128 + SIGPIPE);
+      else if (handler != SIG_IGN)
+        (*handler) (SIGPIPE);
+    }
+  return 0;
+}
+#endif
diff --git a/src/grep/gnulib-tests/size_max.h b/src/grep/gnulib-tests/size_max.h
new file mode 100644
index 0000000..1186ba9
--- /dev/null
+++ b/src/grep/gnulib-tests/size_max.h
@@ -0,0 +1,30 @@
+/* size_max.h -- declare SIZE_MAX through system headers
+   Copyright (C) 2005-2006, 2009-2021 Free Software Foundation, Inc.
+   Written by Simon Josefsson.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef GNULIB_SIZE_MAX_H
+#define GNULIB_SIZE_MAX_H
+
+/* Get SIZE_MAX declaration on systems like Solaris 7/8/9.  */
+# include <limits.h>
+/* Get SIZE_MAX declaration on systems like glibc 2.  */
+# if HAVE_STDINT_H
+#  include <stdint.h>
+# endif
+/* On systems where these include files don't define it, SIZE_MAX is defined
+   in config.h.  */
+
+#endif /* GNULIB_SIZE_MAX_H */
diff --git a/src/grep/gnulib-tests/sleep.c b/src/grep/gnulib-tests/sleep.c
new file mode 100644
index 0000000..0b49eb7
--- /dev/null
+++ b/src/grep/gnulib-tests/sleep.c
@@ -0,0 +1,76 @@
+/* Pausing execution of the current thread.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2007.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include <limits.h>
+
+#include "verify.h"
+
+#if defined _WIN32 && ! defined __CYGWIN__
+
+# define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+# include <windows.h>
+
+unsigned int
+sleep (unsigned int seconds)
+{
+  unsigned int remaining;
+
+  /* Sleep for 1 second many times, because
+       1. Sleep is not interruptible by Ctrl-C,
+       2. we want to avoid arithmetic overflow while multiplying with 1000.  */
+  for (remaining = seconds; remaining > 0; remaining--)
+    Sleep (1000);
+
+  return remaining;
+}
+
+#elif HAVE_SLEEP
+
+# undef sleep
+
+/* Guarantee unlimited sleep and a reasonable return value.  Cygwin
+   1.5.x rejects attempts to sleep more than 49.7 days (2**32
+   milliseconds), but uses uninitialized memory which results in a
+   garbage answer.  Similarly, Linux 2.6.9 with glibc 2.3.4 has a too
+   small return value when asked to sleep more than 24.85 days.  */
+unsigned int
+rpl_sleep (unsigned int seconds)
+{
+  /* This requires int larger than 16 bits.  */
+  verify (UINT_MAX / 24 / 24 / 60 / 60);
+  const unsigned int limit = 24 * 24 * 60 * 60;
+  while (limit < seconds)
+    {
+      unsigned int result;
+      seconds -= limit;
+      result = sleep (limit);
+      if (result)
+        return seconds + result;
+    }
+  return sleep (seconds);
+}
+
+#else /* !HAVE_SLEEP */
+
+ #error "Please port gnulib sleep.c to your platform, possibly using usleep() or select(), then report this to bug-gnulib."
+
+#endif
diff --git a/src/grep/gnulib-tests/snprintf.c b/src/grep/gnulib-tests/snprintf.c
new file mode 100644
index 0000000..a589cf1
--- /dev/null
+++ b/src/grep/gnulib-tests/snprintf.c
@@ -0,0 +1,71 @@
+/* Formatted output to strings.
+   Copyright (C) 2004, 2006-2021 Free Software Foundation, Inc.
+   Written by Simon Josefsson and Paul Eggert.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdio.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "vasnprintf.h"
+
+/* Print formatted output to string STR.  Similar to sprintf, but
+   additional length SIZE limit how much is written into STR.  Returns
+   string length of formatted string (which may be larger than SIZE).
+   STR may be NULL, in which case nothing will be written.  On error,
+   return a negative value.  */
+int
+snprintf (char *str, size_t size, const char *format, ...)
+{
+  char *output;
+  size_t len;
+  size_t lenbuf = size;
+  va_list args;
+
+  va_start (args, format);
+  output = vasnprintf (str, &lenbuf, format, args);
+  len = lenbuf;
+  va_end (args);
+
+  if (!output)
+    return -1;
+
+  if (output != str)
+    {
+      if (size)
+        {
+          size_t pruned_len = (len < size ? len : size - 1);
+          memcpy (str, output, pruned_len);
+          str[pruned_len] = '\0';
+        }
+
+      free (output);
+    }
+
+  if (INT_MAX < len)
+    {
+      errno = EOVERFLOW;
+      return -1;
+    }
+
+  return len;
+}
diff --git a/src/grep/gnulib-tests/socket.c b/src/grep/gnulib-tests/socket.c
new file mode 100644
index 0000000..0f2e6ff
--- /dev/null
+++ b/src/grep/gnulib-tests/socket.c
@@ -0,0 +1,53 @@
+/* socket.c --- wrappers for Windows socket function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#include "sockets.h"
+
+/* Don't assume that UNICODE is defined.  */
+#undef WSASocket
+#define WSASocket WSASocketW
+
+int
+rpl_socket (int domain, int type, int protocol)
+{
+  SOCKET fh;
+
+  gl_sockets_startup (SOCKETS_1_1);
+
+  /* We have to use WSASocket() to create non-overlapped IO sockets.
+     Overlapped IO sockets cannot be used with read/write.  */
+  fh = WSASocket (domain, type, protocol, NULL, 0, 0);
+
+  if (fh == INVALID_SOCKET)
+    {
+      set_winsock_errno ();
+      return -1;
+    }
+  else
+    return SOCKET_TO_FD (fh);
+}
diff --git a/src/grep/gnulib-tests/sockets.c b/src/grep/gnulib-tests/sockets.c
new file mode 100644
index 0000000..934da73
--- /dev/null
+++ b/src/grep/gnulib-tests/sockets.c
@@ -0,0 +1,161 @@
+/* sockets.c --- wrappers for Windows socket functions
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson */
+
+#include <config.h>
+
+/* Specification.  */
+#include "sockets.h"
+
+#if WINDOWS_SOCKETS
+
+/* This includes winsock2.h on MinGW. */
+# include <sys/socket.h>
+
+# include "fd-hook.h"
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+# include "w32sock.h"
+
+static int
+close_fd_maybe_socket (const struct fd_hook *remaining_list,
+                       gl_close_fn primary,
+                       int fd)
+{
+  /* Note about multithread-safety: There is a race condition where, between
+     our calls to closesocket() and the primary close(), some other thread
+     could make system calls that allocate precisely the same HANDLE value
+     as sock; then the primary close() would call CloseHandle() on it.  */
+  SOCKET sock;
+  WSANETWORKEVENTS ev;
+
+  /* Test whether fd refers to a socket.  */
+  sock = FD_TO_SOCKET (fd);
+  ev.lNetworkEvents = 0xDEADBEEF;
+  WSAEnumNetworkEvents (sock, NULL, &ev);
+  if (ev.lNetworkEvents != 0xDEADBEEF)
+    {
+      /* fd refers to a socket.  */
+      /* FIXME: other applications, like squid, use an undocumented
+         _free_osfhnd free function.  But this is not enough: The 'osfile'
+         flags for fd also needs to be cleared, but it is hard to access it.
+         Instead, here we just close twice the file descriptor.  */
+      if (closesocket (sock))
+        {
+          set_winsock_errno ();
+          return -1;
+        }
+      else
+        {
+          /* This call frees the file descriptor and does a
+             CloseHandle ((HANDLE) _get_osfhandle (fd)), which fails.  */
+          _close (fd);
+          return 0;
+        }
+    }
+  else
+    /* Some other type of file descriptor.  */
+    return execute_close_hooks (remaining_list, primary, fd);
+}
+
+static int
+ioctl_fd_maybe_socket (const struct fd_hook *remaining_list,
+                       gl_ioctl_fn primary,
+                       int fd, int request, void *arg)
+{
+  SOCKET sock;
+  WSANETWORKEVENTS ev;
+
+  /* Test whether fd refers to a socket.  */
+  sock = FD_TO_SOCKET (fd);
+  ev.lNetworkEvents = 0xDEADBEEF;
+  WSAEnumNetworkEvents (sock, NULL, &ev);
+  if (ev.lNetworkEvents != 0xDEADBEEF)
+    {
+      /* fd refers to a socket.  */
+      if (ioctlsocket (sock, request, arg) < 0)
+        {
+          set_winsock_errno ();
+          return -1;
+        }
+      else
+        return 0;
+    }
+  else
+    /* Some other type of file descriptor.  */
+    return execute_ioctl_hooks (remaining_list, primary, fd, request, arg);
+}
+
+static struct fd_hook fd_sockets_hook;
+
+static int initialized_sockets_version /* = 0 */;
+
+#endif /* WINDOWS_SOCKETS */
+
+int
+gl_sockets_startup (int version _GL_UNUSED)
+{
+#if WINDOWS_SOCKETS
+  if (version > initialized_sockets_version)
+    {
+      WSADATA data;
+      int err;
+
+      err = WSAStartup (version, &data);
+      if (err != 0)
+        return 1;
+
+      if (data.wVersion != version)
+        {
+          WSACleanup ();
+          return 2;
+        }
+
+      if (initialized_sockets_version == 0)
+        register_fd_hook (close_fd_maybe_socket, ioctl_fd_maybe_socket,
+                          &fd_sockets_hook);
+
+      initialized_sockets_version = version;
+    }
+#endif
+
+  return 0;
+}
+
+int
+gl_sockets_cleanup (void)
+{
+#if WINDOWS_SOCKETS
+  int err;
+
+  initialized_sockets_version = 0;
+
+  unregister_fd_hook (&fd_sockets_hook);
+
+  err = WSACleanup ();
+  if (err != 0)
+    return 1;
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/sockets.h b/src/grep/gnulib-tests/sockets.h
new file mode 100644
index 0000000..e70c2bb
--- /dev/null
+++ b/src/grep/gnulib-tests/sockets.h
@@ -0,0 +1,66 @@
+/* sockets.h - wrappers for Windows socket functions
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson */
+
+#ifndef SOCKETS_H
+#define SOCKETS_H 1
+
+#define SOCKETS_1_0 0x0001
+#define SOCKETS_1_1 0x0101
+#define SOCKETS_2_0 0x0002
+#define SOCKETS_2_1 0x0102
+#define SOCKETS_2_2 0x0202
+
+int gl_sockets_startup (int version)
+#ifndef WINDOWS_SOCKETS
+  _GL_ATTRIBUTE_CONST
+#endif
+  ;
+
+int gl_sockets_cleanup (void)
+#ifndef WINDOWS_SOCKETS
+  _GL_ATTRIBUTE_CONST
+#endif
+  ;
+
+/* This function is useful it you create a socket using gnulib's
+   Winsock wrappers but needs to pass on the socket handle to some
+   other library that only accepts sockets. */
+#ifdef WINDOWS_SOCKETS
+
+# include <sys/socket.h>
+
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+
+static inline SOCKET
+gl_fd_to_handle (int fd)
+{
+  return _get_osfhandle (fd);
+}
+
+#else
+
+# define gl_fd_to_handle(x) (x)
+
+#endif /* WINDOWS_SOCKETS */
+
+#endif /* SOCKETS_H */
diff --git a/src/grep/gnulib-tests/strerror_r.c b/src/grep/gnulib-tests/strerror_r.c
new file mode 100644
index 0000000..f024452
--- /dev/null
+++ b/src/grep/gnulib-tests/strerror_r.c
@@ -0,0 +1,452 @@
+/* strerror_r.c --- POSIX compatible system error routine
+
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
+
+#include <config.h>
+
+/* Enable declaration of sys_nerr and sys_errlist in <errno.h> on NetBSD.  */
+#define _NETBSD_SOURCE 1
+
+/* Specification.  */
+#include <string.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#if !HAVE_SNPRINTF
+# include <stdarg.h>
+#endif
+
+#include "strerror-override.h"
+
+#if (__GLIBC__ >= 2 || defined __UCLIBC__ || defined __CYGWIN__) && HAVE___XPG_STRERROR_R /* glibc >= 2.3.4, cygwin >= 1.7.9 */
+
+# define USE_XPG_STRERROR_R 1
+extern
+#ifdef __cplusplus
+"C"
+#endif
+int __xpg_strerror_r (int errnum, char *buf, size_t buflen);
+
+#elif HAVE_DECL_STRERROR_R && !(__GLIBC__ >= 2 || defined __UCLIBC__ || defined __CYGWIN__)
+
+/* The system's strerror_r function is OK, except that its third argument
+   is 'int', not 'size_t', or its return type is wrong.  */
+
+# include <limits.h>
+
+# define USE_SYSTEM_STRERROR_R 1
+
+#else /* (__GLIBC__ >= 2 || defined __UCLIBC__ || defined __CYGWIN__ ? !HAVE___XPG_STRERROR_R : !HAVE_DECL_STRERROR_R) */
+
+/* Use the system's strerror().  Exclude glibc and cygwin because the
+   system strerror_r has the wrong return type, and cygwin 1.7.9
+   strerror_r clobbers strerror.  */
+# undef strerror
+
+# define USE_SYSTEM_STRERROR 1
+
+# if defined __NetBSD__ || defined __hpux || (defined _WIN32 && !defined __CYGWIN__) || defined __sgi || (defined __sun && !defined _LP64) || defined __CYGWIN__
+
+/* No locking needed.  */
+
+/* Get catgets internationalization functions.  */
+#  if HAVE_CATGETS
+#   include <nl_types.h>
+#  endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Get sys_nerr, sys_errlist on HP-UX (otherwise only declared in C++ mode).
+   Get sys_nerr, sys_errlist on IRIX (otherwise only declared with _SGIAPI).  */
+#  if defined __hpux || defined __sgi
+extern int sys_nerr;
+extern char *sys_errlist[];
+#  endif
+
+/* Get sys_nerr on Solaris.  */
+#  if defined __sun && !defined _LP64
+extern int sys_nerr;
+#  endif
+
+#ifdef __cplusplus
+}
+#endif
+
+# else
+
+#  include "glthread/lock.h"
+
+/* This lock protects the buffer returned by strerror().  We assume that
+   no other uses of strerror() exist in the program.  */
+gl_lock_define_initialized(static, strerror_lock)
+
+# endif
+
+#endif
+
+/* On MSVC, there is no snprintf() function, just a _snprintf().
+   It is of lower quality, but sufficient for the simple use here.
+   We only have to make sure to NUL terminate the result (_snprintf
+   does not NUL terminate, like strncpy).  */
+#if !HAVE_SNPRINTF
+static int
+local_snprintf (char *buf, size_t buflen, const char *format, ...)
+{
+  va_list args;
+  int result;
+
+  va_start (args, format);
+  result = _vsnprintf (buf, buflen, format, args);
+  va_end (args);
+  if (buflen > 0 && (result < 0 || result >= buflen))
+    buf[buflen - 1] = '\0';
+  return result;
+}
+# undef snprintf
+# define snprintf local_snprintf
+#endif
+
+/* Copy as much of MSG into BUF as possible, without corrupting errno.
+   Return 0 if MSG fit in BUFLEN, otherwise return ERANGE.  */
+static int
+safe_copy (char *buf, size_t buflen, const char *msg)
+{
+  size_t len = strlen (msg);
+  size_t moved = len < buflen ? len : buflen - 1;
+
+  /* Although POSIX lets memmove corrupt errno, we don't
+     know of any implementation where this is a real problem.  */
+  memmove (buf, msg, moved);
+  buf[moved] = '\0';
+  return len < buflen ? 0 : ERANGE;
+}
+
+
+int
+strerror_r (int errnum, char *buf, size_t buflen)
+#undef strerror_r
+{
+  /* Filter this out now, so that rest of this replacement knows that
+     there is room for a non-empty message and trailing NUL.  */
+  if (buflen <= 1)
+    {
+      if (buflen)
+        *buf = '\0';
+      return ERANGE;
+    }
+  *buf = '\0';
+
+  /* Check for gnulib overrides.  */
+  {
+    char const *msg = strerror_override (errnum);
+
+    if (msg)
+      return safe_copy (buf, buflen, msg);
+  }
+
+  {
+    int ret;
+    int saved_errno = errno;
+
+#if USE_XPG_STRERROR_R
+
+    {
+      ret = __xpg_strerror_r (errnum, buf, buflen);
+      if (ret < 0)
+        ret = errno;
+      if (!*buf)
+        {
+          /* glibc 2.13 would not touch buf on err, so we have to fall
+             back to GNU strerror_r which always returns a thread-safe
+             untruncated string to (partially) copy into our buf.  */
+          safe_copy (buf, buflen, strerror_r (errnum, buf, buflen));
+        }
+    }
+
+#elif USE_SYSTEM_STRERROR_R
+
+    if (buflen > INT_MAX)
+      buflen = INT_MAX;
+
+# ifdef __hpux
+    /* On HP-UX 11.31, strerror_r always fails when buflen < 80; it
+       also fails to change buf on EINVAL.  */
+    {
+      char stackbuf[80];
+
+      if (buflen < sizeof stackbuf)
+        {
+          ret = strerror_r (errnum, stackbuf, sizeof stackbuf);
+          if (ret == 0)
+            ret = safe_copy (buf, buflen, stackbuf);
+        }
+      else
+        ret = strerror_r (errnum, buf, buflen);
+    }
+# else
+    ret = strerror_r (errnum, buf, buflen);
+
+    /* Some old implementations may return (-1, EINVAL) instead of EINVAL.
+       But on Haiku, valid error numbers are negative.  */
+#  if !defined __HAIKU__
+    if (ret < 0)
+      ret = errno;
+#  endif
+# endif
+
+# if defined _AIX || defined __HAIKU__
+    /* AIX and Haiku return 0 rather than ERANGE when truncating strings; try
+       again until we are sure we got the entire string.  */
+    if (!ret && strlen (buf) == buflen - 1)
+      {
+        char stackbuf[STACKBUF_LEN];
+        size_t len;
+        strerror_r (errnum, stackbuf, sizeof stackbuf);
+        len = strlen (stackbuf);
+        /* STACKBUF_LEN should have been large enough.  */
+        if (len + 1 == sizeof stackbuf)
+          abort ();
+        if (buflen <= len)
+          ret = ERANGE;
+      }
+# else
+    /* Solaris 10 does not populate buf on ERANGE.  OpenBSD 4.7
+       truncates early on ERANGE rather than return a partial integer.
+       We prefer the maximal string.  We set buf[0] earlier, and we
+       know of no implementation that modifies buf to be an
+       unterminated string, so this strlen should be portable in
+       practice (rather than pulling in a safer strnlen).  */
+    if (ret == ERANGE && strlen (buf) < buflen - 1)
+      {
+        char stackbuf[STACKBUF_LEN];
+
+        /* STACKBUF_LEN should have been large enough.  */
+        if (strerror_r (errnum, stackbuf, sizeof stackbuf) == ERANGE)
+          abort ();
+        safe_copy (buf, buflen, stackbuf);
+      }
+# endif
+
+#else /* USE_SYSTEM_STRERROR */
+
+    /* Try to do what strerror (errnum) does, but without clobbering the
+       buffer used by strerror().  */
+
+# if defined __NetBSD__ || defined __hpux || (defined _WIN32 && !defined __CYGWIN__) || defined __CYGWIN__ /* NetBSD, HP-UX, native Windows, Cygwin */
+
+    /* NetBSD:         sys_nerr, sys_errlist are declared through _NETBSD_SOURCE
+                       and <errno.h> above.
+       HP-UX:          sys_nerr, sys_errlist are declared explicitly above.
+       native Windows: sys_nerr, sys_errlist are declared in <stdlib.h>.
+       Cygwin:         sys_nerr, sys_errlist are declared in <errno.h>.  */
+    if (errnum >= 0 && errnum < sys_nerr)
+      {
+#  if HAVE_CATGETS && (defined __NetBSD__ || defined __hpux)
+#   if defined __NetBSD__
+        nl_catd catd = catopen ("libc", NL_CAT_LOCALE);
+        const char *errmsg =
+          (catd != (nl_catd)-1
+           ? catgets (catd, 1, errnum, sys_errlist[errnum])
+           : sys_errlist[errnum]);
+#   endif
+#   if defined __hpux
+        nl_catd catd = catopen ("perror", NL_CAT_LOCALE);
+        const char *errmsg =
+          (catd != (nl_catd)-1
+           ? catgets (catd, 1, 1 + errnum, sys_errlist[errnum])
+           : sys_errlist[errnum]);
+#   endif
+#  else
+        const char *errmsg = sys_errlist[errnum];
+#  endif
+        if (errmsg == NULL || *errmsg == '\0')
+          ret = EINVAL;
+        else
+          ret = safe_copy (buf, buflen, errmsg);
+#  if HAVE_CATGETS && (defined __NetBSD__ || defined __hpux)
+        if (catd != (nl_catd)-1)
+          catclose (catd);
+#  endif
+      }
+    else
+      ret = EINVAL;
+
+# elif defined __sgi || (defined __sun && !defined _LP64) /* IRIX, Solaris <= 9 32-bit */
+
+    /* For a valid error number, the system's strerror() function returns
+       a pointer to a not copied string, not to a buffer.  */
+    if (errnum >= 0 && errnum < sys_nerr)
+      {
+        char *errmsg = strerror (errnum);
+
+        if (errmsg == NULL || *errmsg == '\0')
+          ret = EINVAL;
+        else
+          ret = safe_copy (buf, buflen, errmsg);
+      }
+    else
+      ret = EINVAL;
+
+# else
+
+    gl_lock_lock (strerror_lock);
+
+    {
+      char *errmsg = strerror (errnum);
+
+      /* For invalid error numbers, strerror() on
+           - IRIX 6.5 returns NULL,
+           - HP-UX 11 returns an empty string.  */
+      if (errmsg == NULL || *errmsg == '\0')
+        ret = EINVAL;
+      else
+        ret = safe_copy (buf, buflen, errmsg);
+    }
+
+    gl_lock_unlock (strerror_lock);
+
+# endif
+
+#endif
+
+#if defined _WIN32 && !defined __CYGWIN__
+    /* MSVC 14 defines names for many error codes in the range 100..140,
+       but _sys_errlist contains strings only for the error codes
+       < _sys_nerr = 43.  */
+    if (ret == EINVAL)
+      {
+        const char *errmsg;
+
+        switch (errnum)
+          {
+          case 100 /* EADDRINUSE */:
+            errmsg = "Address already in use";
+            break;
+          case 101 /* EADDRNOTAVAIL */:
+            errmsg = "Cannot assign requested address";
+            break;
+          case 102 /* EAFNOSUPPORT */:
+            errmsg = "Address family not supported by protocol";
+            break;
+          case 103 /* EALREADY */:
+            errmsg = "Operation already in progress";
+            break;
+          case 105 /* ECANCELED */:
+            errmsg = "Operation canceled";
+            break;
+          case 106 /* ECONNABORTED */:
+            errmsg = "Software caused connection abort";
+            break;
+          case 107 /* ECONNREFUSED */:
+            errmsg = "Connection refused";
+            break;
+          case 108 /* ECONNRESET */:
+            errmsg = "Connection reset by peer";
+            break;
+          case 109 /* EDESTADDRREQ */:
+            errmsg = "Destination address required";
+            break;
+          case 110 /* EHOSTUNREACH */:
+            errmsg = "No route to host";
+            break;
+          case 112 /* EINPROGRESS */:
+            errmsg = "Operation now in progress";
+            break;
+          case 113 /* EISCONN */:
+            errmsg = "Transport endpoint is already connected";
+            break;
+          case 114 /* ELOOP */:
+            errmsg = "Too many levels of symbolic links";
+            break;
+          case 115 /* EMSGSIZE */:
+            errmsg = "Message too long";
+            break;
+          case 116 /* ENETDOWN */:
+            errmsg = "Network is down";
+            break;
+          case 117 /* ENETRESET */:
+            errmsg = "Network dropped connection on reset";
+            break;
+          case 118 /* ENETUNREACH */:
+            errmsg = "Network is unreachable";
+            break;
+          case 119 /* ENOBUFS */:
+            errmsg = "No buffer space available";
+            break;
+          case 123 /* ENOPROTOOPT */:
+            errmsg = "Protocol not available";
+            break;
+          case 126 /* ENOTCONN */:
+            errmsg = "Transport endpoint is not connected";
+            break;
+          case 128 /* ENOTSOCK */:
+            errmsg = "Socket operation on non-socket";
+            break;
+          case 129 /* ENOTSUP */:
+            errmsg = "Not supported";
+            break;
+          case 130 /* EOPNOTSUPP */:
+            errmsg = "Operation not supported";
+            break;
+          case 132 /* EOVERFLOW */:
+            errmsg = "Value too large for defined data type";
+            break;
+          case 133 /* EOWNERDEAD */:
+            errmsg = "Owner died";
+            break;
+          case 134 /* EPROTO */:
+            errmsg = "Protocol error";
+            break;
+          case 135 /* EPROTONOSUPPORT */:
+            errmsg = "Protocol not supported";
+            break;
+          case 136 /* EPROTOTYPE */:
+            errmsg = "Protocol wrong type for socket";
+            break;
+          case 138 /* ETIMEDOUT */:
+            errmsg = "Connection timed out";
+            break;
+          case 140 /* EWOULDBLOCK */:
+            errmsg = "Operation would block";
+            break;
+          default:
+            errmsg = NULL;
+            break;
+          }
+        if (errmsg != NULL)
+          ret = safe_copy (buf, buflen, errmsg);
+      }
+#endif
+
+    if (ret == EINVAL && !*buf)
+      {
+#if defined __HAIKU__
+        /* For consistency with perror().  */
+        snprintf (buf, buflen, "Unknown Application Error (%d)", errnum);
+#else
+        snprintf (buf, buflen, "Unknown error %d", errnum);
+#endif
+      }
+
+    errno = saved_errno;
+    return ret;
+  }
+}
diff --git a/src/grep/gnulib-tests/symlink.c b/src/grep/gnulib-tests/symlink.c
new file mode 100644
index 0000000..6e48898
--- /dev/null
+++ b/src/grep/gnulib-tests/symlink.c
@@ -0,0 +1,57 @@
+/* Stub for symlink().
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include <errno.h>
+#include <string.h>
+#include <sys/stat.h>
+
+
+#if HAVE_SYMLINK
+
+# undef symlink
+
+/* Create a symlink, but reject trailing slash.  */
+int
+rpl_symlink (char const *contents, char const *name)
+{
+  size_t len = strlen (name);
+  if (len && name[len - 1] == '/')
+    {
+      struct stat st;
+      if (lstat (name, &st) == 0 || errno == EOVERFLOW)
+        errno = EEXIST;
+      return -1;
+    }
+  return symlink (contents, name);
+}
+
+#else /* !HAVE_SYMLINK */
+
+/* The system does not support symlinks.  */
+int
+symlink (char const *contents _GL_UNUSED,
+         char const *name _GL_UNUSED)
+{
+  errno = ENOSYS;
+  return -1;
+}
+
+#endif /* !HAVE_SYMLINK */
diff --git a/src/grep/gnulib-tests/sys_ioctl.in.h b/src/grep/gnulib-tests/sys_ioctl.in.h
new file mode 100644
index 0000000..f1b2a1b
--- /dev/null
+++ b/src/grep/gnulib-tests/sys_ioctl.in.h
@@ -0,0 +1,79 @@
+/* Substitute for and wrapper around <sys/ioctl.h>.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _@GUARD_PREFIX@_SYS_IOCTL_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* The include_next requires a split double-inclusion guard.  */
+#if @HAVE_SYS_IOCTL_H@
+# @INCLUDE_NEXT@ @NEXT_SYS_IOCTL_H@
+#endif
+
+#ifndef _@GUARD_PREFIX@_SYS_IOCTL_H
+#define _@GUARD_PREFIX@_SYS_IOCTL_H
+
+/* AIX 5.1 and Solaris 10 declare ioctl() in <unistd.h> and in <stropts.h>,
+   but not in <sys/ioctl.h>.
+   Haiku declares ioctl() in <unistd.h>, but not in <sys/ioctl.h>.
+   But avoid namespace pollution on glibc systems.  */
+#ifndef __GLIBC__
+# include <unistd.h>
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
+/* Declare overridden functions.  */
+
+#if @GNULIB_IOCTL@
+# if @REPLACE_IOCTL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ioctl
+#   define ioctl rpl_ioctl
+#  endif
+_GL_FUNCDECL_RPL (ioctl, int,
+                  (int fd, int request, ... /* {void *,char *} arg */));
+_GL_CXXALIAS_RPL (ioctl, int,
+                  (int fd, int request, ... /* {void *,char *} arg */));
+# else
+#  if @SYS_IOCTL_H_HAVE_WINSOCK2_H@ || 1
+_GL_FUNCDECL_SYS (ioctl, int,
+                  (int fd, int request, ... /* {void *,char *} arg */));
+#  endif
+_GL_CXXALIAS_SYS (ioctl, int,
+                  (int fd, int request, ... /* {void *,char *} arg */));
+# endif
+_GL_CXXALIASWARN (ioctl);
+#elif @SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+# undef ioctl
+# define ioctl ioctl_used_without_requesting_gnulib_module_ioctl
+#elif defined GNULIB_POSIXCHECK
+# undef ioctl
+# if HAVE_RAW_DECL_IOCTL
+_GL_WARN_ON_USE (ioctl, "ioctl does not portably work on sockets - "
+                 "use gnulib module ioctl for portability");
+# endif
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_SYS_IOCTL_H */
+#endif /* _@GUARD_PREFIX@_SYS_IOCTL_H */
diff --git a/src/grep/gnulib-tests/sys_select.in.h b/src/grep/gnulib-tests/sys_select.in.h
new file mode 100644
index 0000000..f8ef648
--- /dev/null
+++ b/src/grep/gnulib-tests/sys_select.in.h
@@ -0,0 +1,326 @@
+/* Substitute for <sys/select.h>.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+# if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+# endif
+@PRAGMA_COLUMNS@
+
+/* On OSF/1 and Solaris 2.6, <sys/types.h> and <sys/time.h>
+   both include <sys/select.h>.
+   On Cygwin, <sys/time.h> includes <sys/select.h>.
+   Simply delegate to the system's header in this case.  */
+#if (@HAVE_SYS_SELECT_H@                                                \
+     && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H             \
+     && ((defined __osf__ && defined _SYS_TYPES_H_                      \
+          && defined _OSF_SOURCE)                                       \
+         || (defined __sun && defined _SYS_TYPES_H                      \
+             && (! (defined _XOPEN_SOURCE || defined _POSIX_C_SOURCE)   \
+                 || defined __EXTENSIONS__))))
+
+# define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H
+# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
+
+#elif (@HAVE_SYS_SELECT_H@                                              \
+       && (defined _CYGWIN_SYS_TIME_H                                   \
+           || (!defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H       \
+               && ((defined __osf__ && defined _SYS_TIME_H_             \
+                    && defined _OSF_SOURCE)                             \
+                   || (defined __sun && defined _SYS_TIME_H             \
+                       && (! (defined _XOPEN_SOURCE                     \
+                              || defined _POSIX_C_SOURCE)               \
+                           || defined __EXTENSIONS__))))))
+
+# define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H
+# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
+
+/* On IRIX 6.5, <sys/timespec.h> includes <sys/types.h>, which includes
+   <sys/bsd_types.h>, which includes <sys/select.h>.  At this point we cannot
+   include <signal.h>, because that includes <internal/signal_core.h>, which
+   gives a syntax error because <sys/timespec.h> has not been completely
+   processed.  Simply delegate to the system's header in this case.  */
+#elif @HAVE_SYS_SELECT_H@ && defined __sgi && (defined _SYS_BSD_TYPES_H && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_BSD_TYPES_H)
+
+# define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_BSD_TYPES_H
+# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
+
+/* On OpenBSD 5.0, <pthread.h> includes <sys/types.h>, which includes
+   <sys/select.h>.  At this point we cannot include <signal.h>, because that
+   includes gnulib's pthread.h override, which gives a syntax error because
+   /usr/include/pthread.h has not been completely processed.  Simply delegate
+   to the system's header in this case.  */
+#elif @HAVE_SYS_SELECT_H@ && defined __OpenBSD__ && (defined _PTHREAD_H_ && !defined PTHREAD_MUTEX_INITIALIZER)
+
+# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
+
+#else
+
+#ifndef _@GUARD_PREFIX@_SYS_SELECT_H
+
+/* On many platforms, <sys/select.h> assumes prior inclusion of
+   <sys/types.h>.  Also, mingw defines sigset_t there, instead of
+   in <signal.h> where it belongs.  */
+#include <sys/types.h>
+
+#if @HAVE_SYS_SELECT_H@
+
+/* On OSF/1 4.0, <sys/select.h> provides only a forward declaration
+   of 'struct timeval', and no definition of this type.
+   Also, Mac OS X, AIX, HP-UX, IRIX, Solaris, Interix declare select()
+   in <sys/time.h>.
+   But avoid namespace pollution on glibc systems and "unknown type
+   name" problems on Cygwin.  */
+# if !(defined __GLIBC__ || defined __CYGWIN__)
+#  include <sys/time.h>
+# endif
+
+/* On AIX 7 and Solaris 10, <sys/select.h> provides an FD_ZERO implementation
+   that relies on memset(), but without including <string.h>.
+   But in any case avoid namespace pollution on glibc systems.  */
+# if (defined __OpenBSD__ || defined _AIX || defined __sun || defined __osf__ || defined __BEOS__) \
+     && ! defined __GLIBC__
+#  include <string.h>
+# endif
+
+/* The include_next requires a split double-inclusion guard.  */
+# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
+
+#endif
+
+/* Get definition of 'sigset_t'.
+   But avoid namespace pollution on glibc systems and "unknown type
+   name" problems on Cygwin.
+   On OS/2 kLIBC, sigset_t is defined in <sys/select.h>, too. In addition,
+   if <sys/param.h> is included, <types.h> -> <sys/types.h> -> <sys/select.h>
+   are included. Then <signal.h> -> <pthread.h> are included by GNULIB. By the
+   way, <pthread.h> requires PAGE_SIZE defined in <sys/param.h>. However,
+   <sys/param.h> has not been processed, yet. As a result, 'PAGE_SIZE'
+   undeclared error occurs in <pthread.h>.
+   Do this after the include_next (for the sake of OpenBSD 5.0) but before
+   the split double-inclusion guard (for the sake of Solaris).  */
+#if !((defined __GLIBC__ || defined __CYGWIN__ || defined __KLIBC__) \
+      && !defined __UCLIBC__)
+# include <signal.h>
+#endif
+
+#ifndef _@GUARD_PREFIX@_SYS_SELECT_H
+#define _@GUARD_PREFIX@_SYS_SELECT_H
+
+#if !@HAVE_SYS_SELECT_H@
+/* A platform that lacks <sys/select.h>.  */
+/* Get the 'struct timeval' and 'fd_set' types and the FD_* macros
+   on most platforms.  */
+# include <sys/time.h>
+/* On HP-UX 11, <sys/time.h> provides an FD_ZERO implementation
+   that relies on memset(), but without including <string.h>.  */
+# if defined __hpux
+#  include <string.h>
+# endif
+/* On native Windows platforms:
+   Get the 'fd_set' type.
+   Get the close() declaration before we override it.  */
+# if @HAVE_WINSOCK2_H@
+#  if !defined _GL_INCLUDING_WINSOCK2_H
+#   define _GL_INCLUDING_WINSOCK2_H
+#   include <winsock2.h>
+#   undef _GL_INCLUDING_WINSOCK2_H
+#  endif
+#  include <io.h>
+# endif
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
+/* Fix some definitions from <winsock2.h>.  */
+
+#if @HAVE_WINSOCK2_H@
+
+# if !GNULIB_defined_rpl_fd_isset
+
+/* Re-define FD_ISSET to avoid a WSA call while we are not using
+   network sockets.  */
+static int
+rpl_fd_isset (SOCKET fd, fd_set * set)
+{
+  u_int i;
+  if (set == NULL)
+    return 0;
+
+  for (i = 0; i < set->fd_count; i++)
+    if (set->fd_array[i] == fd)
+      return 1;
+
+  return 0;
+}
+
+#  define GNULIB_defined_rpl_fd_isset 1
+# endif
+
+# undef FD_ISSET
+# define FD_ISSET(fd, set) rpl_fd_isset(fd, set)
+
+#endif
+
+/* Hide some function declarations from <winsock2.h>.  */
+
+#if @HAVE_WINSOCK2_H@
+# if !defined _@GUARD_PREFIX@_UNISTD_H
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef close
+#   define close close_used_without_including_unistd_h
+#  elif !defined __clang__
+    _GL_WARN_ON_USE (close,
+                     "close() used without including <unistd.h>");
+#  endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef gethostname
+#   define gethostname gethostname_used_without_including_unistd_h
+#  elif !defined __clang__
+    _GL_WARN_ON_USE (gethostname,
+                     "gethostname() used without including <unistd.h>");
+#  endif
+# endif
+# if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef socket
+#   define socket              socket_used_without_including_sys_socket_h
+#   undef connect
+#   define connect             connect_used_without_including_sys_socket_h
+#   undef accept
+#   define accept              accept_used_without_including_sys_socket_h
+#   undef bind
+#   define bind                bind_used_without_including_sys_socket_h
+#   undef getpeername
+#   define getpeername         getpeername_used_without_including_sys_socket_h
+#   undef getsockname
+#   define getsockname         getsockname_used_without_including_sys_socket_h
+#   undef getsockopt
+#   define getsockopt          getsockopt_used_without_including_sys_socket_h
+#   undef listen
+#   define listen              listen_used_without_including_sys_socket_h
+#   undef recv
+#   define recv                recv_used_without_including_sys_socket_h
+#   undef send
+#   define send                send_used_without_including_sys_socket_h
+#   undef recvfrom
+#   define recvfrom            recvfrom_used_without_including_sys_socket_h
+#   undef sendto
+#   define sendto              sendto_used_without_including_sys_socket_h
+#   undef setsockopt
+#   define setsockopt          setsockopt_used_without_including_sys_socket_h
+#   undef shutdown
+#   define shutdown            shutdown_used_without_including_sys_socket_h
+#  elif !defined __clang__
+    _GL_WARN_ON_USE (socket,
+                     "socket() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (connect,
+                     "connect() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (accept,
+                     "accept() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (bind,
+                     "bind() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (getpeername,
+                     "getpeername() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (getsockname,
+                     "getsockname() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (getsockopt,
+                     "getsockopt() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (listen,
+                     "listen() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (recv,
+                     "recv() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (send,
+                     "send() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (recvfrom,
+                     "recvfrom() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (sendto,
+                     "sendto() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (setsockopt,
+                     "setsockopt() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (shutdown,
+                     "shutdown() used without including <sys/socket.h>");
+#  endif
+# endif
+#endif
+
+
+#if @GNULIB_PSELECT@
+# if @REPLACE_PSELECT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pselect
+#   define pselect rpl_pselect
+#  endif
+_GL_FUNCDECL_RPL (pselect, int,
+                  (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+                   struct timespec const *restrict, const sigset_t *restrict));
+_GL_CXXALIAS_RPL (pselect, int,
+                  (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+                   struct timespec const *restrict, const sigset_t *restrict));
+# else
+#  if !@HAVE_PSELECT@
+_GL_FUNCDECL_SYS (pselect, int,
+                  (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+                   struct timespec const *restrict, const sigset_t *restrict));
+#  endif
+_GL_CXXALIAS_SYS (pselect, int,
+                  (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+                   struct timespec const *restrict, const sigset_t *restrict));
+# endif
+_GL_CXXALIASWARN (pselect);
+#elif defined GNULIB_POSIXCHECK
+# undef pselect
+# if HAVE_RAW_DECL_PSELECT
+_GL_WARN_ON_USE (pselect, "pselect is not portable - "
+                 "use gnulib module pselect for portability");
+# endif
+#endif
+
+#if @GNULIB_SELECT@
+# if @REPLACE_SELECT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef select
+#   define select rpl_select
+#  endif
+_GL_FUNCDECL_RPL (select, int,
+                  (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+                   struct timeval *restrict));
+_GL_CXXALIAS_RPL (select, int,
+                  (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+                   timeval *restrict));
+# else
+_GL_CXXALIAS_SYS (select, int,
+                  (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+                   timeval *restrict));
+# endif
+_GL_CXXALIASWARN (select);
+#elif @HAVE_WINSOCK2_H@
+# undef select
+# define select select_used_without_requesting_gnulib_module_select
+#elif defined GNULIB_POSIXCHECK
+# undef select
+# if HAVE_RAW_DECL_SELECT
+_GL_WARN_ON_USE (select, "select is not always POSIX compliant - "
+                 "use gnulib module select for portability");
+# endif
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_SYS_SELECT_H */
+#endif /* _@GUARD_PREFIX@_SYS_SELECT_H */
+#endif /* OSF/1 */
diff --git a/src/grep/gnulib-tests/sys_socket.c b/src/grep/gnulib-tests/sys_socket.c
new file mode 100644
index 0000000..d90b32c
--- /dev/null
+++ b/src/grep/gnulib-tests/sys_socket.c
@@ -0,0 +1,22 @@
+/* Inline functions for <sys/socket.h>.
+
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define _GL_SYS_SOCKET_INLINE _GL_EXTERN_INLINE
+#include "sys/socket.h"
+typedef int dummy;
diff --git a/src/grep/gnulib-tests/sys_socket.in.h b/src/grep/gnulib-tests/sys_socket.in.h
new file mode 100644
index 0000000..0a2c57d
--- /dev/null
+++ b/src/grep/gnulib-tests/sys_socket.in.h
@@ -0,0 +1,734 @@
+/* Provide a sys/socket header file for systems lacking it (read: MinGW)
+   and for systems where it is incomplete.
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+   Written by Simon Josefsson.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This file is supposed to be used on platforms that lack <sys/socket.h>,
+   on platforms where <sys/socket.h> cannot be included standalone, and on
+   platforms where <sys/socket.h> does not provide all necessary definitions.
+   It is intended to provide definitions and prototypes needed by an
+   application.  */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined _GL_ALREADY_INCLUDING_SYS_SOCKET_H
+/* Special invocation convention:
+   - On Cygwin 1.5.x we have a sequence of nested includes
+     <sys/socket.h> -> <cygwin/socket.h> -> <asm/socket.h> -> <cygwin/if.h>,
+     and the latter includes <sys/socket.h>.  In this situation, the functions
+     are not yet declared, therefore we cannot provide the C++ aliases.  */
+
+#@INCLUDE_NEXT@ @NEXT_SYS_SOCKET_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_SYS_SOCKET_H
+
+#if @HAVE_SYS_SOCKET_H@
+
+# define _GL_ALREADY_INCLUDING_SYS_SOCKET_H
+
+/* On many platforms, <sys/socket.h> assumes prior inclusion of
+   <sys/types.h>.  */
+# include <sys/types.h>
+
+/* On FreeBSD 6.4, <sys/socket.h> defines some macros that assume that NULL
+   is defined.  */
+# include <stddef.h>
+
+/* The include_next requires a split double-inclusion guard.  */
+# @INCLUDE_NEXT@ @NEXT_SYS_SOCKET_H@
+
+# undef _GL_ALREADY_INCLUDING_SYS_SOCKET_H
+
+#endif
+
+#ifndef _@GUARD_PREFIX@_SYS_SOCKET_H
+#define _@GUARD_PREFIX@_SYS_SOCKET_H
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef _GL_SYS_SOCKET_INLINE
+# define _GL_SYS_SOCKET_INLINE _GL_INLINE
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+#if !@HAVE_SA_FAMILY_T@
+# if !GNULIB_defined_sa_family_t
+/* On OS/2 kLIBC, sa_family_t is unsigned char unless TCPV40HDRS is defined. */
+#  if !defined __KLIBC__ || defined TCPV40HDRS
+typedef unsigned short  sa_family_t;
+#  else
+typedef unsigned char   sa_family_t;
+#  endif
+#  define GNULIB_defined_sa_family_t 1
+# endif
+#endif
+
+#if @HAVE_STRUCT_SOCKADDR_STORAGE@
+/* Make the 'struct sockaddr_storage' field 'ss_family' visible on AIX 7.1.  */
+# if !@HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY@
+#  ifndef ss_family
+#   define ss_family __ss_family
+#  endif
+# endif
+#else
+# include <stdalign.h>
+/* Code taken from glibc sysdeps/unix/sysv/linux/bits/socket.h on
+   2009-05-08, licensed under LGPLv2.1+, plus portability fixes. */
+# define __ss_aligntype unsigned long int
+# define _SS_SIZE 256
+# define _SS_PADSIZE \
+    (_SS_SIZE - ((sizeof (sa_family_t) >= alignof (__ss_aligntype)      \
+                  ? sizeof (sa_family_t)                                \
+                  : alignof (__ss_aligntype))                           \
+                 + sizeof (__ss_aligntype)))
+
+# if !GNULIB_defined_struct_sockaddr_storage
+struct sockaddr_storage
+{
+  sa_family_t ss_family;      /* Address family, etc.  */
+  __ss_aligntype __ss_align;  /* Force desired alignment.  */
+  char __ss_padding[_SS_PADSIZE];
+};
+#  define GNULIB_defined_struct_sockaddr_storage 1
+# endif
+
+#endif
+
+/* Get struct iovec.  */
+/* But avoid namespace pollution on glibc systems.  */
+#if ! defined __GLIBC__
+# include <sys/uio.h>
+#endif
+
+#if @HAVE_SYS_SOCKET_H@
+
+/* A platform that has <sys/socket.h>.  */
+
+/* For shutdown().  */
+# if !defined SHUT_RD
+#  define SHUT_RD 0
+# endif
+# if !defined SHUT_WR
+#  define SHUT_WR 1
+# endif
+# if !defined SHUT_RDWR
+#  define SHUT_RDWR 2
+# endif
+
+# ifdef __VMS                        /* OpenVMS */
+#  ifndef CMSG_SPACE
+#   define CMSG_SPACE(length) _CMSG_SPACE(length)
+#  endif
+#  ifndef CMSG_LEN
+#   define CMSG_LEN(length) _CMSG_LEN(length)
+#  endif
+# endif
+
+#else
+
+# ifdef __CYGWIN__
+#  error "Cygwin does have a sys/socket.h, doesn't it?!?"
+# endif
+
+/* A platform that lacks <sys/socket.h>.
+
+   Currently only MinGW is supported.  See the gnulib manual regarding
+   Windows sockets.  MinGW has the header files winsock2.h and
+   ws2tcpip.h that declare the sys/socket.h definitions we need.  Note
+   that you can influence which definitions you get by setting the
+   WINVER symbol before including these two files.  For example,
+   getaddrinfo is only available if _WIN32_WINNT >= 0x0501 (that
+   symbol is set indirectly through WINVER).  You can set this by
+   adding AC_DEFINE(WINVER, 0x0501) to configure.ac.  Note that your
+   code may not run on older Windows releases then.  My Windows 2000
+   box was not able to run the code, for example.  The situation is
+   slightly confusing because
+   <https://docs.microsoft.com/en-us/windows/desktop/api/ws2tcpip/nf-ws2tcpip-getaddrinfo>
+   suggests that getaddrinfo should be available on all Windows
+   releases. */
+
+# if @HAVE_WINSOCK2_H@
+#  include <winsock2.h>
+# endif
+# if @HAVE_WS2TCPIP_H@
+#  include <ws2tcpip.h>
+# endif
+
+/* For shutdown(). */
+# if !defined SHUT_RD && defined SD_RECEIVE
+#  define SHUT_RD SD_RECEIVE
+# endif
+# if !defined SHUT_WR && defined SD_SEND
+#  define SHUT_WR SD_SEND
+# endif
+# if !defined SHUT_RDWR && defined SD_BOTH
+#  define SHUT_RDWR SD_BOTH
+# endif
+
+# if @HAVE_WINSOCK2_H@
+/* Include headers needed by the emulation code.  */
+#  include <sys/types.h>
+#  include <io.h>
+/* If these headers don't define socklen_t, <config.h> does.  */
+# endif
+
+/* Rudimentary 'struct msghdr'; this works as long as you don't try to
+   access msg_control or msg_controllen.  */
+struct msghdr {
+  void *msg_name;
+  socklen_t msg_namelen;
+  struct iovec *msg_iov;
+  int msg_iovlen;
+  int msg_flags;
+};
+
+#endif
+
+/* Ensure SO_REUSEPORT is defined.  */
+/* For the subtle differences between SO_REUSEPORT and SO_REUSEADDR, see
+   https://stackoverflow.com/questions/14388706/socket-options-so-reuseaddr-and-so-reuseport-how-do-they-differ-do-they-mean-t
+   and https://lwn.net/Articles/542629/
+ */
+#ifndef SO_REUSEPORT
+# define SO_REUSEPORT SO_REUSEADDR
+#endif
+
+/* Fix some definitions from <winsock2.h>.  */
+
+#if @HAVE_WINSOCK2_H@
+
+# if !GNULIB_defined_rpl_fd_isset
+
+/* Re-define FD_ISSET to avoid a WSA call while we are not using
+   network sockets.  */
+_GL_SYS_SOCKET_INLINE int
+rpl_fd_isset (SOCKET fd, fd_set * set)
+{
+  u_int i;
+  if (set == NULL)
+    return 0;
+
+  for (i = 0; i < set->fd_count; i++)
+    if (set->fd_array[i] == fd)
+      return 1;
+
+  return 0;
+}
+
+#  define GNULIB_defined_rpl_fd_isset 1
+# endif
+
+# undef FD_ISSET
+# define FD_ISSET(fd, set) rpl_fd_isset(fd, set)
+
+#endif
+
+/* Hide some function declarations from <winsock2.h>.  */
+
+#if @HAVE_WINSOCK2_H@
+# if !defined _@GUARD_PREFIX@_UNISTD_H
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef close
+#   define close close_used_without_including_unistd_h
+#  elif !defined __clang__
+    _GL_WARN_ON_USE (close,
+                     "close() used without including <unistd.h>");
+#  endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef gethostname
+#   define gethostname gethostname_used_without_including_unistd_h
+#  else
+    _GL_WARN_ON_USE (gethostname,
+                     "gethostname() used without including <unistd.h>");
+#  endif
+# endif
+# if !defined _@GUARD_PREFIX@_SYS_SELECT_H
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef select
+#   define select select_used_without_including_sys_select_h
+#  else
+    _GL_WARN_ON_USE (select,
+                     "select() used without including <sys/select.h>");
+#  endif
+# endif
+#endif
+
+/* Wrap everything else to use libc file descriptors for sockets.  */
+
+#if @GNULIB_SOCKET@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef socket
+#   define socket rpl_socket
+#  endif
+_GL_FUNCDECL_RPL (socket, int, (int domain, int type, int protocol));
+_GL_CXXALIAS_RPL (socket, int, (int domain, int type, int protocol));
+# else
+_GL_CXXALIAS_SYS (socket, int, (int domain, int type, int protocol));
+# endif
+_GL_CXXALIASWARN (socket);
+#elif @HAVE_WINSOCK2_H@
+# undef socket
+# define socket socket_used_without_requesting_gnulib_module_socket
+#elif defined GNULIB_POSIXCHECK
+# undef socket
+# if HAVE_RAW_DECL_SOCKET
+_GL_WARN_ON_USE (socket, "socket is not always POSIX compliant - "
+                 "use gnulib module socket for portability");
+# endif
+#endif
+
+#if @GNULIB_CONNECT@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef connect
+#   define connect rpl_connect
+#  endif
+_GL_FUNCDECL_RPL (connect, int,
+                  (int fd, const struct sockaddr *addr, socklen_t addrlen)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (connect, int,
+                  (int fd, const struct sockaddr *addr, socklen_t addrlen));
+# else
+/* Need to cast, because on NonStop Kernel, the third parameter is
+                                                     size_t addrlen.  */
+_GL_CXXALIAS_SYS_CAST (connect, int,
+                       (int fd,
+                        const struct sockaddr *addr, socklen_t addrlen));
+# endif
+_GL_CXXALIASWARN (connect);
+#elif @HAVE_WINSOCK2_H@
+# undef connect
+# define connect socket_used_without_requesting_gnulib_module_connect
+#elif defined GNULIB_POSIXCHECK
+# undef connect
+# if HAVE_RAW_DECL_CONNECT
+_GL_WARN_ON_USE (connect, "connect is not always POSIX compliant - "
+                 "use gnulib module connect for portability");
+# endif
+#endif
+
+#if @GNULIB_ACCEPT@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef accept
+#   define accept rpl_accept
+#  endif
+_GL_FUNCDECL_RPL (accept, int,
+                  (int fd,
+                   struct sockaddr *restrict addr,
+                   socklen_t *restrict addrlen));
+_GL_CXXALIAS_RPL (accept, int,
+                  (int fd,
+                   struct sockaddr *restrict addr,
+                   socklen_t *restrict addrlen));
+# else
+/* Need to cast, because on Solaris 10 systems, the third parameter is
+                        void *addrlen.  */
+_GL_CXXALIAS_SYS_CAST (accept, int,
+                       (int fd,
+                        struct sockaddr *restrict addr,
+                        socklen_t *restrict addrlen));
+# endif
+_GL_CXXALIASWARN (accept);
+#elif @HAVE_WINSOCK2_H@
+# undef accept
+# define accept accept_used_without_requesting_gnulib_module_accept
+#elif defined GNULIB_POSIXCHECK
+# undef accept
+# if HAVE_RAW_DECL_ACCEPT
+_GL_WARN_ON_USE (accept, "accept is not always POSIX compliant - "
+                 "use gnulib module accept for portability");
+# endif
+#endif
+
+#if @GNULIB_BIND@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef bind
+#   define bind rpl_bind
+#  endif
+_GL_FUNCDECL_RPL (bind, int,
+                  (int fd, const struct sockaddr *addr, socklen_t addrlen)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (bind, int,
+                  (int fd, const struct sockaddr *addr, socklen_t addrlen));
+# else
+/* Need to cast, because on NonStop Kernel, the third parameter is
+                                                     size_t addrlen.  */
+_GL_CXXALIAS_SYS_CAST (bind, int,
+                       (int fd,
+                        const struct sockaddr *addr, socklen_t addrlen));
+# endif
+_GL_CXXALIASWARN (bind);
+#elif @HAVE_WINSOCK2_H@
+# undef bind
+# define bind bind_used_without_requesting_gnulib_module_bind
+#elif defined GNULIB_POSIXCHECK
+# undef bind
+# if HAVE_RAW_DECL_BIND
+_GL_WARN_ON_USE (bind, "bind is not always POSIX compliant - "
+                 "use gnulib module bind for portability");
+# endif
+#endif
+
+#if @GNULIB_GETPEERNAME@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getpeername
+#   define getpeername rpl_getpeername
+#  endif
+_GL_FUNCDECL_RPL (getpeername, int,
+                  (int fd, struct sockaddr *restrict addr,
+                   socklen_t *restrict addrlen)
+                  _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_RPL (getpeername, int,
+                  (int fd, struct sockaddr *restrict addr,
+                   socklen_t *restrict addrlen));
+# else
+/* Need to cast, because on Solaris 10 systems, the third parameter is
+                        void *addrlen.  */
+_GL_CXXALIAS_SYS_CAST (getpeername, int,
+                       (int fd, struct sockaddr *restrict addr,
+                        socklen_t *restrict addrlen));
+# endif
+_GL_CXXALIASWARN (getpeername);
+#elif @HAVE_WINSOCK2_H@
+# undef getpeername
+# define getpeername getpeername_used_without_requesting_gnulib_module_getpeername
+#elif defined GNULIB_POSIXCHECK
+# undef getpeername
+# if HAVE_RAW_DECL_GETPEERNAME
+_GL_WARN_ON_USE (getpeername, "getpeername is not always POSIX compliant - "
+                 "use gnulib module getpeername for portability");
+# endif
+#endif
+
+#if @GNULIB_GETSOCKNAME@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getsockname
+#   define getsockname rpl_getsockname
+#  endif
+_GL_FUNCDECL_RPL (getsockname, int,
+                  (int fd, struct sockaddr *restrict addr,
+                   socklen_t *restrict addrlen)
+                  _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_RPL (getsockname, int,
+                  (int fd, struct sockaddr *restrict addr,
+                   socklen_t *restrict addrlen));
+# else
+/* Need to cast, because on Solaris 10 systems, the third parameter is
+                        void *addrlen.  */
+_GL_CXXALIAS_SYS_CAST (getsockname, int,
+                       (int fd, struct sockaddr *restrict addr,
+                        socklen_t *restrict addrlen));
+# endif
+_GL_CXXALIASWARN (getsockname);
+#elif @HAVE_WINSOCK2_H@
+# undef getsockname
+# define getsockname getsockname_used_without_requesting_gnulib_module_getsockname
+#elif defined GNULIB_POSIXCHECK
+# undef getsockname
+# if HAVE_RAW_DECL_GETSOCKNAME
+_GL_WARN_ON_USE (getsockname, "getsockname is not always POSIX compliant - "
+                 "use gnulib module getsockname for portability");
+# endif
+#endif
+
+#if @GNULIB_GETSOCKOPT@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getsockopt
+#   define getsockopt rpl_getsockopt
+#  endif
+_GL_FUNCDECL_RPL (getsockopt, int,
+                  (int fd, int level, int optname,
+                   void *restrict optval, socklen_t *restrict optlen)
+                  _GL_ARG_NONNULL ((4, 5)));
+_GL_CXXALIAS_RPL (getsockopt, int,
+                  (int fd, int level, int optname,
+                   void *restrict optval, socklen_t *restrict optlen));
+# else
+/* Need to cast, because on Solaris 10 systems, the fifth parameter is
+                                                       void *optlen.  */
+_GL_CXXALIAS_SYS_CAST (getsockopt, int,
+                       (int fd, int level, int optname,
+                        void *restrict optval, socklen_t *restrict optlen));
+# endif
+_GL_CXXALIASWARN (getsockopt);
+#elif @HAVE_WINSOCK2_H@
+# undef getsockopt
+# define getsockopt getsockopt_used_without_requesting_gnulib_module_getsockopt
+#elif defined GNULIB_POSIXCHECK
+# undef getsockopt
+# if HAVE_RAW_DECL_GETSOCKOPT
+_GL_WARN_ON_USE (getsockopt, "getsockopt is not always POSIX compliant - "
+                 "use gnulib module getsockopt for portability");
+# endif
+#endif
+
+#if @GNULIB_LISTEN@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef listen
+#   define listen rpl_listen
+#  endif
+_GL_FUNCDECL_RPL (listen, int, (int fd, int backlog));
+_GL_CXXALIAS_RPL (listen, int, (int fd, int backlog));
+# else
+_GL_CXXALIAS_SYS (listen, int, (int fd, int backlog));
+# endif
+_GL_CXXALIASWARN (listen);
+#elif @HAVE_WINSOCK2_H@
+# undef listen
+# define listen listen_used_without_requesting_gnulib_module_listen
+#elif defined GNULIB_POSIXCHECK
+# undef listen
+# if HAVE_RAW_DECL_LISTEN
+_GL_WARN_ON_USE (listen, "listen is not always POSIX compliant - "
+                 "use gnulib module listen for portability");
+# endif
+#endif
+
+#if @GNULIB_RECV@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef recv
+#   define recv rpl_recv
+#  endif
+_GL_FUNCDECL_RPL (recv, ssize_t, (int fd, void *buf, size_t len, int flags)
+                                 _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (recv, ssize_t, (int fd, void *buf, size_t len, int flags));
+# else
+/* Need to cast, because on HP-UX 11.31 the return type may be
+                             int,
+   depending on compiler options.  */
+_GL_CXXALIAS_SYS_CAST (recv, ssize_t, (int fd, void *buf, size_t len, int flags));
+# endif
+_GL_CXXALIASWARN (recv);
+#elif @HAVE_WINSOCK2_H@
+# undef recv
+# define recv recv_used_without_requesting_gnulib_module_recv
+#elif defined GNULIB_POSIXCHECK
+# undef recv
+# if HAVE_RAW_DECL_RECV
+_GL_WARN_ON_USE (recv, "recv is not always POSIX compliant - "
+                 "use gnulib module recv for portability");
+# endif
+#endif
+
+#if @GNULIB_SEND@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef send
+#   define send rpl_send
+#  endif
+_GL_FUNCDECL_RPL (send, ssize_t,
+                  (int fd, const void *buf, size_t len, int flags)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (send, ssize_t,
+                  (int fd, const void *buf, size_t len, int flags));
+# else
+/* Need to cast, because on HP-UX 11.31 the return type may be
+                             int,
+   depending on compiler options.  */
+_GL_CXXALIAS_SYS_CAST (send, ssize_t,
+                       (int fd, const void *buf, size_t len, int flags));
+# endif
+_GL_CXXALIASWARN (send);
+#elif @HAVE_WINSOCK2_H@
+# undef send
+# define send send_used_without_requesting_gnulib_module_send
+#elif defined GNULIB_POSIXCHECK
+# undef send
+# if HAVE_RAW_DECL_SEND
+_GL_WARN_ON_USE (send, "send is not always POSIX compliant - "
+                 "use gnulib module send for portability");
+# endif
+#endif
+
+#if @GNULIB_RECVFROM@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef recvfrom
+#   define recvfrom rpl_recvfrom
+#  endif
+_GL_FUNCDECL_RPL (recvfrom, ssize_t,
+                  (int fd, void *restrict buf, size_t len, int flags,
+                   struct sockaddr *restrict from,
+                   socklen_t *restrict fromlen)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (recvfrom, ssize_t,
+                  (int fd, void *restrict buf, size_t len, int flags,
+                   struct sockaddr *restrict from,
+                   socklen_t *restrict fromlen));
+# else
+/* Need to cast, because on Solaris 10 systems, the sixth parameter is
+                                               void *fromlen.  */
+_GL_CXXALIAS_SYS_CAST (recvfrom, ssize_t,
+                       (int fd, void *restrict buf, size_t len, int flags,
+                        struct sockaddr *restrict from,
+                        socklen_t *restrict fromlen));
+# endif
+_GL_CXXALIASWARN (recvfrom);
+#elif @HAVE_WINSOCK2_H@
+# undef recvfrom
+# define recvfrom recvfrom_used_without_requesting_gnulib_module_recvfrom
+#elif defined GNULIB_POSIXCHECK
+# undef recvfrom
+# if HAVE_RAW_DECL_RECVFROM
+_GL_WARN_ON_USE (recvfrom, "recvfrom is not always POSIX compliant - "
+                 "use gnulib module recvfrom for portability");
+# endif
+#endif
+
+#if @GNULIB_SENDTO@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef sendto
+#   define sendto rpl_sendto
+#  endif
+_GL_FUNCDECL_RPL (sendto, ssize_t,
+                  (int fd, const void *buf, size_t len, int flags,
+                   const struct sockaddr *to, socklen_t tolen)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (sendto, ssize_t,
+                  (int fd, const void *buf, size_t len, int flags,
+                   const struct sockaddr *to, socklen_t tolen));
+# else
+/* Need to cast, because on NonStop Kernel, the sixth parameter is
+                                                   size_t tolen.  */
+_GL_CXXALIAS_SYS_CAST (sendto, ssize_t,
+                       (int fd, const void *buf, size_t len, int flags,
+                        const struct sockaddr *to, socklen_t tolen));
+# endif
+_GL_CXXALIASWARN (sendto);
+#elif @HAVE_WINSOCK2_H@
+# undef sendto
+# define sendto sendto_used_without_requesting_gnulib_module_sendto
+#elif defined GNULIB_POSIXCHECK
+# undef sendto
+# if HAVE_RAW_DECL_SENDTO
+_GL_WARN_ON_USE (sendto, "sendto is not always POSIX compliant - "
+                 "use gnulib module sendto for portability");
+# endif
+#endif
+
+#if @GNULIB_SETSOCKOPT@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef setsockopt
+#   define setsockopt rpl_setsockopt
+#  endif
+_GL_FUNCDECL_RPL (setsockopt, int, (int fd, int level, int optname,
+                                    const void * optval, socklen_t optlen)
+                                   _GL_ARG_NONNULL ((4)));
+_GL_CXXALIAS_RPL (setsockopt, int, (int fd, int level, int optname,
+                                    const void * optval, socklen_t optlen));
+# else
+/* Need to cast, because on NonStop Kernel, the fifth parameter is
+                                             size_t optlen.  */
+_GL_CXXALIAS_SYS_CAST (setsockopt, int,
+                       (int fd, int level, int optname,
+                        const void * optval, socklen_t optlen));
+# endif
+_GL_CXXALIASWARN (setsockopt);
+#elif @HAVE_WINSOCK2_H@
+# undef setsockopt
+# define setsockopt setsockopt_used_without_requesting_gnulib_module_setsockopt
+#elif defined GNULIB_POSIXCHECK
+# undef setsockopt
+# if HAVE_RAW_DECL_SETSOCKOPT
+_GL_WARN_ON_USE (setsockopt, "setsockopt is not always POSIX compliant - "
+                 "use gnulib module setsockopt for portability");
+# endif
+#endif
+
+#if @GNULIB_SHUTDOWN@
+# if @HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef shutdown
+#   define shutdown rpl_shutdown
+#  endif
+_GL_FUNCDECL_RPL (shutdown, int, (int fd, int how));
+_GL_CXXALIAS_RPL (shutdown, int, (int fd, int how));
+# else
+_GL_CXXALIAS_SYS (shutdown, int, (int fd, int how));
+# endif
+_GL_CXXALIASWARN (shutdown);
+#elif @HAVE_WINSOCK2_H@
+# undef shutdown
+# define shutdown shutdown_used_without_requesting_gnulib_module_shutdown
+#elif defined GNULIB_POSIXCHECK
+# undef shutdown
+# if HAVE_RAW_DECL_SHUTDOWN
+_GL_WARN_ON_USE (shutdown, "shutdown is not always POSIX compliant - "
+                 "use gnulib module shutdown for portability");
+# endif
+#endif
+
+#if @GNULIB_ACCEPT4@
+/* Accept a connection on a socket, with specific opening flags.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   See also the Linux man page at
+   <https://www.kernel.org/doc/man-pages/online/pages/man2/accept4.2.html>.  */
+# if @HAVE_ACCEPT4@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define accept4 rpl_accept4
+#  endif
+_GL_FUNCDECL_RPL (accept4, int,
+                  (int sockfd, struct sockaddr *addr, socklen_t *addrlen,
+                   int flags));
+_GL_CXXALIAS_RPL (accept4, int,
+                  (int sockfd, struct sockaddr *addr, socklen_t *addrlen,
+                   int flags));
+# else
+_GL_FUNCDECL_SYS (accept4, int,
+                  (int sockfd, struct sockaddr *addr, socklen_t *addrlen,
+                   int flags));
+_GL_CXXALIAS_SYS (accept4, int,
+                  (int sockfd, struct sockaddr *addr, socklen_t *addrlen,
+                   int flags));
+# endif
+_GL_CXXALIASWARN (accept4);
+#elif defined GNULIB_POSIXCHECK
+# undef accept4
+# if HAVE_RAW_DECL_ACCEPT4
+_GL_WARN_ON_USE (accept4, "accept4 is unportable - "
+                 "use gnulib module accept4 for portability");
+# endif
+#endif
+
+_GL_INLINE_HEADER_END
+
+#endif /* _@GUARD_PREFIX@_SYS_SOCKET_H */
+#endif /* _@GUARD_PREFIX@_SYS_SOCKET_H */
+#endif
diff --git a/src/grep/gnulib-tests/sys_time.in.h b/src/grep/gnulib-tests/sys_time.in.h
new file mode 100644
index 0000000..8035fbe
--- /dev/null
+++ b/src/grep/gnulib-tests/sys_time.in.h
@@ -0,0 +1,224 @@
+/* Provide a more complete sys/time.h.
+
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#ifndef _@GUARD_PREFIX@_SYS_TIME_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* On Cygwin and on many BSDish systems, <sys/time.h> includes itself
+   recursively via <sys/select.h>.
+   Simply delegate to the system's header in this case; it is a no-op.
+   Without this extra ifdef, the C++ gettimeofday declaration below
+   would be a forward declaration in gnulib's nested <sys/time.h>.  */
+#if defined _CYGWIN_SYS_TIME_H || defined _SYS_TIME_H || defined _SYS_TIME_H_
+# @INCLUDE_NEXT@ @NEXT_SYS_TIME_H@
+#else
+
+/* The include_next requires a split double-inclusion guard.  */
+#if @HAVE_SYS_TIME_H@
+# @INCLUDE_NEXT@ @NEXT_SYS_TIME_H@
+#endif
+
+#ifndef _@GUARD_PREFIX@_SYS_TIME_H
+#define _@GUARD_PREFIX@_SYS_TIME_H
+
+#if ! @HAVE_SYS_TIME_H@
+# include <time.h>
+#endif
+
+/* On native Windows with MSVC, get the 'struct timeval' type.
+   Also, on native Windows with a 64-bit time_t, where we are overriding the
+   'struct timeval' type, get all declarations of system functions whose
+   signature contains 'struct timeval'.  */
+#if (defined _MSC_VER || @REPLACE_STRUCT_TIMEVAL@) && @HAVE_WINSOCK2_H@ && !defined _GL_INCLUDING_WINSOCK2_H
+# define _GL_INCLUDING_WINSOCK2_H
+# include <winsock2.h>
+# undef _GL_INCLUDING_WINSOCK2_H
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !@HAVE_STRUCT_TIMEVAL@ || @REPLACE_STRUCT_TIMEVAL@
+
+# if @REPLACE_STRUCT_TIMEVAL@
+#  define timeval rpl_timeval
+# endif
+
+# if !GNULIB_defined_struct_timeval
+struct timeval
+{
+  time_t tv_sec;
+  long int tv_usec;
+};
+#  define GNULIB_defined_struct_timeval 1
+# endif
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#if @GNULIB_GETTIMEOFDAY@
+# if @REPLACE_GETTIMEOFDAY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef gettimeofday
+#   define gettimeofday rpl_gettimeofday
+#  endif
+_GL_FUNCDECL_RPL (gettimeofday, int,
+                  (struct timeval *restrict, void *restrict)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (gettimeofday, int,
+                  (struct timeval *restrict, void *restrict));
+# else
+#  if !@HAVE_GETTIMEOFDAY@
+_GL_FUNCDECL_SYS (gettimeofday, int,
+                  (struct timeval *restrict, void *restrict)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+/* Need to cast, because on glibc systems, by default, the second argument is
+                                                  struct timezone *.  */
+_GL_CXXALIAS_SYS_CAST (gettimeofday, int,
+                       (struct timeval *restrict, void *restrict));
+# endif
+_GL_CXXALIASWARN (gettimeofday);
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+namespace GNULIB_NAMESPACE {
+  typedef ::timeval
+#  undef timeval
+    timeval;
+#  if @REPLACE_STRUCT_TIMEVAL@
+#   define timeval rpl_timeval
+  typedef ::timeval timeval;
+#  endif
+}
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef gettimeofday
+# if HAVE_RAW_DECL_GETTIMEOFDAY
+_GL_WARN_ON_USE (gettimeofday, "gettimeofday is unportable - "
+                 "use gnulib module gettimeofday for portability");
+# endif
+#endif
+
+/* Hide some function declarations from <winsock2.h>.  */
+
+#if defined _MSC_VER && @HAVE_WINSOCK2_H@
+# if !defined _@GUARD_PREFIX@_UNISTD_H
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef close
+#   define close close_used_without_including_unistd_h
+#  elif !defined __clang__
+     _GL_WARN_ON_USE (close,
+                      "close() used without including <unistd.h>");
+#  endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef gethostname
+#   define gethostname gethostname_used_without_including_unistd_h
+#  else
+     _GL_WARN_ON_USE (gethostname,
+                      "gethostname() used without including <unistd.h>");
+#  endif
+# endif
+# if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef socket
+#   define socket              socket_used_without_including_sys_socket_h
+#   undef connect
+#   define connect             connect_used_without_including_sys_socket_h
+#   undef accept
+#   define accept              accept_used_without_including_sys_socket_h
+#   undef bind
+#   define bind                bind_used_without_including_sys_socket_h
+#   undef getpeername
+#   define getpeername         getpeername_used_without_including_sys_socket_h
+#   undef getsockname
+#   define getsockname         getsockname_used_without_including_sys_socket_h
+#   undef getsockopt
+#   define getsockopt          getsockopt_used_without_including_sys_socket_h
+#   undef listen
+#   define listen              listen_used_without_including_sys_socket_h
+#   undef recv
+#   define recv                recv_used_without_including_sys_socket_h
+#   undef send
+#   define send                send_used_without_including_sys_socket_h
+#   undef recvfrom
+#   define recvfrom            recvfrom_used_without_including_sys_socket_h
+#   undef sendto
+#   define sendto              sendto_used_without_including_sys_socket_h
+#   undef setsockopt
+#   define setsockopt          setsockopt_used_without_including_sys_socket_h
+#   undef shutdown
+#   define shutdown            shutdown_used_without_including_sys_socket_h
+#  else
+     _GL_WARN_ON_USE (socket,
+                      "socket() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (connect,
+                      "connect() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (accept,
+                      "accept() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (bind,
+                      "bind() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (getpeername,
+                      "getpeername() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (getsockname,
+                      "getsockname() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (getsockopt,
+                      "getsockopt() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (listen,
+                      "listen() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (recv,
+                      "recv() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (send,
+                      "send() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (recvfrom,
+                      "recvfrom() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (sendto,
+                      "sendto() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (setsockopt,
+                      "setsockopt() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (shutdown,
+                      "shutdown() used without including <sys/socket.h>");
+#  endif
+# endif
+# if !defined _@GUARD_PREFIX@_SYS_SELECT_H
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef select
+#   define select select_used_without_including_sys_select_h
+#  else
+     _GL_WARN_ON_USE (select,
+                      "select() used without including <sys/select.h>");
+#  endif
+# endif
+#endif
+
+#endif /* _@GUARD_PREFIX@_SYS_TIME_H */
+#endif /* _CYGWIN_SYS_TIME_H */
+#endif /* _@GUARD_PREFIX@_SYS_TIME_H */
diff --git a/src/grep/gnulib-tests/sys_uio.in.h b/src/grep/gnulib-tests/sys_uio.in.h
new file mode 100644
index 0000000..507ab01
--- /dev/null
+++ b/src/grep/gnulib-tests/sys_uio.in.h
@@ -0,0 +1,63 @@
+/* Substitute for <sys/uio.h>.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+# if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+# endif
+@PRAGMA_COLUMNS@
+
+#ifndef _@GUARD_PREFIX@_SYS_UIO_H
+
+#if @HAVE_SYS_UIO_H@
+
+/* On OpenBSD 4.4, <sys/uio.h> assumes prior inclusion of <sys/types.h>.  */
+# include <sys/types.h>
+
+/* The include_next requires a split double-inclusion guard.  */
+# @INCLUDE_NEXT@ @NEXT_SYS_UIO_H@
+
+#endif
+
+#ifndef _@GUARD_PREFIX@_SYS_UIO_H
+#define _@GUARD_PREFIX@_SYS_UIO_H
+
+#if !@HAVE_SYS_UIO_H@
+/* A platform that lacks <sys/uio.h>.  */
+/* Get 'size_t' and 'ssize_t'.  */
+# include <sys/types.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+# if !GNULIB_defined_struct_iovec
+/* All known platforms that lack <sys/uio.h> also lack any declaration
+   of struct iovec in any other header.  */
+struct iovec {
+  void *iov_base;
+  size_t iov_len;
+};
+#  define GNULIB_defined_struct_iovec 1
+# endif
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+#endif /* _@GUARD_PREFIX@_SYS_UIO_H */
+#endif /* _@GUARD_PREFIX@_SYS_UIO_H */
diff --git a/src/grep/gnulib-tests/test-accept.c b/src/grep/gnulib-tests/test-accept.c
new file mode 100644
index 0000000..49b87b1
--- /dev/null
+++ b/src/grep/gnulib-tests/test-accept.c
@@ -0,0 +1,56 @@
+/* Test accepting a connection to a server socket.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (accept, int, (int, struct sockaddr *, socklen_t *));
+
+#include <errno.h>
+#include <netinet/in.h>
+#include <unistd.h>
+
+#include "sockets.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  (void) gl_sockets_startup (SOCKETS_1_1);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    struct sockaddr_in addr;
+    socklen_t addrlen = sizeof (addr);
+
+    errno = 0;
+    ASSERT (accept (-1, (struct sockaddr *) &addr, &addrlen) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    struct sockaddr_in addr;
+    socklen_t addrlen = sizeof (addr);
+
+    close (99);
+    errno = 0;
+    ASSERT (accept (99, (struct sockaddr *) &addr, &addrlen) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-alignof.c b/src/grep/gnulib-tests/test-alignof.c
new file mode 100644
index 0000000..593b608
--- /dev/null
+++ b/src/grep/gnulib-tests/test-alignof.c
@@ -0,0 +1,59 @@
+/* Test of <alignof.h>.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <alignof.h>
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "verify.h"
+
+typedef long double longdouble;
+typedef struct { char a[1]; } struct1;
+typedef struct { char a[2]; } struct2;
+typedef struct { char a[3]; } struct3;
+typedef struct { char a[4]; } struct4;
+
+#define CHECK(type) \
+  typedef struct { char slot1; type slot2; } type##_helper; \
+  verify (alignof_slot (type) == offsetof (type##_helper, slot2)); \
+  const int type##_slot_alignment = alignof_slot (type); \
+  const int type##_type_alignment = alignof_type (type);
+
+CHECK (char)
+CHECK (short)
+CHECK (int)
+CHECK (long)
+CHECK (float)
+CHECK (double)
+CHECK (longdouble)
+#ifdef INT64_MAX
+CHECK (int64_t)
+#endif
+CHECK (struct1)
+CHECK (struct2)
+CHECK (struct3)
+CHECK (struct4)
+
+int
+main ()
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-alloca-opt.c b/src/grep/gnulib-tests/test-alloca-opt.c
new file mode 100644
index 0000000..fdbf6f5
--- /dev/null
+++ b/src/grep/gnulib-tests/test-alloca-opt.c
@@ -0,0 +1,62 @@
+/* Test of optional automatic memory allocation.
+   Copyright (C) 2005, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <alloca.h>
+
+#if HAVE_ALLOCA
+
+static void
+do_allocation (int n)
+{
+  void *volatile ptr = alloca (n);
+  (void) ptr;
+}
+
+void (*func) (int) = do_allocation;
+
+#endif
+
+int
+main ()
+{
+#if HAVE_ALLOCA
+  int i;
+
+  /* Repeat a lot of times, to make sure there's no memory leak.  */
+  for (i = 0; i < 100000; i++)
+    {
+      /* Try various values.
+         n = 0 gave a crash on Alpha with gcc-2.5.8.
+         Some versions of Mac OS X have a stack size limit of 512 KB.  */
+      func (34);
+      func (134);
+      func (399);
+      func (510823);
+      func (129321);
+      func (0);
+      func (4070);
+      func (4095);
+      func (1);
+      func (16582);
+    }
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-argmatch.c b/src/grep/gnulib-tests/test-argmatch.c
new file mode 100644
index 0000000..ef10536
--- /dev/null
+++ b/src/grep/gnulib-tests/test-argmatch.c
@@ -0,0 +1,164 @@
+/* Test of exact or abbreviated match search.
+   Copyright (C) 1990, 1998-1999, 2001-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007, based on test code
+   by David MacKenzie <djm@gnu.ai.mit.edu>.  */
+
+#include <config.h>
+
+/* As of GCC 11.2.1, gcc -Wanalyzer-too-complex reports that main's
+   use of CHECK macros expands to code that is too complicated for gcc
+   -fanalyzer.  Suppress the resulting bogus warnings.  */
+#if 10 <= __GNUC__
+# pragma GCC diagnostic ignored "-Wanalyzer-null-argument"
+#endif
+
+#include "argmatch.h"
+
+#include <stdlib.h>
+
+#include "macros.h"
+
+# define N_(Msgid) (Msgid)
+
+/* Some packages define ARGMATCH_DIE and ARGMATCH_DIE_DECL in <config.h>, and
+   thus must link with a definition of that function.  Provide it here.  */
+#ifdef ARGMATCH_DIE_DECL
+
+_Noreturn ARGMATCH_DIE_DECL;
+ARGMATCH_DIE_DECL { exit (1); }
+
+#endif
+
+enum backup_type
+{
+  no_backups,
+  simple_backups,
+  numbered_existing_backups,
+  numbered_backups
+};
+
+static const char *const backup_args[] =
+{
+  "no", "none", "off",
+  "simple", "never", "single",
+  "existing", "nil", "numbered-existing",
+  "numbered", "t", "newstyle",
+  NULL
+};
+
+static const enum backup_type backup_vals[] =
+{
+  no_backups, no_backups, no_backups,
+  simple_backups, simple_backups, simple_backups,
+  numbered_existing_backups, numbered_existing_backups, numbered_existing_backups,
+  numbered_backups, numbered_backups, numbered_backups
+};
+
+ARGMATCH_DEFINE_GROUP(backup, enum backup_type)
+
+static const argmatch_backup_doc argmatch_backup_docs[] =
+{
+  { "no",       N_("never make backups (even if --backup is given)") },
+  { "numbered", N_("make numbered backups") },
+  { "existing", N_("numbered if numbered backups exist, simple otherwise") },
+  { "simple",   N_("always make simple backups") },
+  { NULL, NULL }
+};
+
+static const argmatch_backup_arg argmatch_backup_args[] =
+{
+  { "no",                no_backups },
+  { "none",              no_backups },
+  { "off",               no_backups },
+  { "simple",            simple_backups },
+  { "never",             simple_backups },
+  { "single",            simple_backups },
+  { "existing",          numbered_existing_backups },
+  { "nil",               numbered_existing_backups },
+  { "numbered-existing", numbered_existing_backups },
+  { "numbered",          numbered_backups },
+  { "t",                 numbered_backups },
+  { "newstyle",          numbered_backups },
+  { NULL, no_backups }
+};
+
+const argmatch_backup_group_type argmatch_backup_group =
+{
+  argmatch_backup_args,
+  argmatch_backup_docs,
+  N_("\
+The backup suffix is '~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.\n\
+The version control method may be selected via the --backup option or through\n\
+the VERSION_CONTROL environment variable.  Here are the values:\n"),
+  NULL
+};
+
+int
+main (int argc, char *argv[])
+{
+#define CHECK(Input, Output)                                            \
+  do {                                                                  \
+    ASSERT (ARGMATCH (Input, backup_args, backup_vals) == Output);      \
+    ASSERT (argmatch_backup_choice (Input) == Output);                  \
+    if (0 <= Output)                                                    \
+      {                                                                 \
+        enum backup_type val                                            \
+          = argmatch_backup_args[Output < 0 ? 0 : Output].val;          \
+        ASSERT (*argmatch_backup_value ("test", Input) == val);         \
+        ASSERT (*argmatch_backup_value ("test",                         \
+                                        argmatch_backup_argument (&val)) \
+                == val);                                                \
+      }                                                                 \
+  } while (0)
+
+  /* Not found.  */
+  CHECK ("klingon", -1);
+
+  /* Exact match.  */
+  CHECK ("none", 1);
+  CHECK ("nil", 7);
+
+  /* Too long.  */
+  CHECK ("nilpotent", -1);
+
+  /* Abbreviated.  */
+  CHECK ("simpl", 3);
+  CHECK ("simp", 3);
+  CHECK ("sim", 3);
+
+  /* Exact match and abbreviated.  */
+  CHECK ("numbered", 9);
+  CHECK ("numbere", -2);
+  CHECK ("number", -2);
+  CHECK ("numbe", -2);
+  CHECK ("numb", -2);
+  CHECK ("num", -2);
+  CHECK ("nu", -2);
+  CHECK ("n", -2);
+
+  /* Ambiguous abbreviated.  */
+  CHECK ("ne", -2);
+
+  /* Ambiguous abbreviated, but same value ("single" and "simple").  */
+  CHECK ("si", 3);
+  CHECK ("s", 3);
+#undef CHECK
+
+  argmatch_backup_usage (stdout);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-arpa_inet.c b/src/grep/gnulib-tests/test-arpa_inet.c
new file mode 100644
index 0000000..10a27e1
--- /dev/null
+++ b/src/grep/gnulib-tests/test-arpa_inet.c
@@ -0,0 +1,27 @@
+/* Test of <arpa/inet.h> substitute.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <arpa/inet.h>
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-binary-io.c b/src/grep/gnulib-tests/test-binary-io.c
new file mode 100644
index 0000000..7da8f8b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-binary-io.c
@@ -0,0 +1,63 @@
+/* Test of binary mode I/O.
+   Copyright (C) 2005, 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
+
+#include <config.h>
+
+#include "binary-io.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  /* Test the O_BINARY macro.  */
+  {
+    int fd =
+      open ("t-bin-out0.tmp", O_CREAT | O_TRUNC | O_RDWR | O_BINARY, 0600);
+    if (write (fd, "Hello\n", 6) < 0)
+      exit (1);
+    close (fd);
+  }
+  {
+    struct stat statbuf;
+    if (stat ("t-bin-out0.tmp", &statbuf) < 0)
+      exit (1);
+    ASSERT (statbuf.st_size == 6);
+  }
+
+  switch (argv[1][0])
+    {
+    case '1':
+      /* Test the set_binary_mode() function.  */
+      set_binary_mode (1, O_BINARY);
+      fputs ("Hello\n", stdout);
+      break;
+
+    default:
+      break;
+    }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-binary-io.sh b/src/grep/gnulib-tests/test-binary-io.sh
new file mode 100755
index 0000000..a177d94
--- /dev/null
+++ b/src/grep/gnulib-tests/test-binary-io.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="$tmpfiles t-bin-out0.tmp t-bin-out1.tmp"
+${CHECKER} ./test-binary-io${EXEEXT} 1 > t-bin-out1.tmp || exit 1
+cmp t-bin-out0.tmp t-bin-out1.tmp > /dev/null || exit 1
+
+rm -fr $tmpfiles
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-bind.c b/src/grep/gnulib-tests/test-bind.c
new file mode 100644
index 0000000..8054e9d
--- /dev/null
+++ b/src/grep/gnulib-tests/test-bind.c
@@ -0,0 +1,58 @@
+/* Test binding a server socket to a port.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (bind, int, (int, const struct sockaddr *, socklen_t));
+
+#include <errno.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+
+#include "sockets.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  (void) gl_sockets_startup (SOCKETS_1_1);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    struct sockaddr_in addr;
+
+    addr.sin_family = AF_INET;
+    inet_pton (AF_INET, "127.0.0.1", &addr.sin_addr);
+    addr.sin_port = htons (80);
+    {
+      errno = 0;
+      ASSERT (bind (-1, (const struct sockaddr *) &addr, sizeof (addr)) == -1);
+      ASSERT (errno == EBADF);
+    }
+    {
+      close (99);
+      errno = 0;
+      ASSERT (bind (99, (const struct sockaddr *) &addr, sizeof (addr)) == -1);
+      ASSERT (errno == EBADF);
+    }
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-bitrotate.c b/src/grep/gnulib-tests/test-bitrotate.c
new file mode 100644
index 0000000..98d15e2
--- /dev/null
+++ b/src/grep/gnulib-tests/test-bitrotate.c
@@ -0,0 +1,279 @@
+/* Test of <bitrotate.h> substitute.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson <simon@josefsson.org>, 2008.  */
+
+#include <config.h>
+
+#include "bitrotate.h"
+
+#include "macros.h"
+
+int
+main (void)
+{
+  ASSERT (rotl8 (42, 0) == 42);
+  ASSERT (rotl8 (42, 1) == 84);
+  ASSERT (rotl8 (42, 2) == 168);
+  ASSERT (rotl8 (42, 3) == 81);
+  ASSERT (rotl8 (42, 4) == 162);
+  ASSERT (rotl8 (42, 5) == 69);
+  ASSERT (rotl8 (42, 6) == 138);
+  ASSERT (rotl8 (42, 7) == 21);
+  ASSERT (rotl8 (42, 8) == 42);
+
+  ASSERT (rotr8 (42, 0) == 42);
+  ASSERT (rotr8 (42, 1) == 21);
+  ASSERT (rotr8 (42, 2) == 138);
+  ASSERT (rotr8 (42, 3) == 69);
+  ASSERT (rotr8 (42, 4) == 162);
+  ASSERT (rotr8 (42, 5) == 81);
+  ASSERT (rotr8 (42, 6) == 168);
+  ASSERT (rotr8 (42, 7) == 84);
+  ASSERT (rotr8 (42, 8) == 42);
+
+  ASSERT (rotl16 (43981, 0) == 43981);
+  ASSERT (rotl16 (43981, 1) == 22427);
+  ASSERT (rotl16 (43981, 2) == 44854);
+  ASSERT (rotl16 (43981, 3) == 24173);
+  ASSERT (rotl16 (43981, 4) == 48346);
+  ASSERT (rotl16 (43981, 5) == 31157);
+  ASSERT (rotl16 (43981, 6) == 62314);
+  ASSERT (rotl16 (43981, 7) == 59093);
+  ASSERT (rotl16 (43981, 8) == 52651);
+  ASSERT (rotl16 (43981, 9) == 39767);
+  ASSERT (rotl16 (43981, 10) == 13999);
+  ASSERT (rotl16 (43981, 11) == 27998);
+  ASSERT (rotl16 (43981, 12) == 55996);
+  ASSERT (rotl16 (43981, 13) == 46457);
+  ASSERT (rotl16 (43981, 14) == 27379);
+  ASSERT (rotl16 (43981, 15) == 54758);
+  ASSERT (rotl16 (43981, 16) == 43981);
+
+  ASSERT (rotr16 (43981, 0) == 43981);
+  ASSERT (rotr16 (43981, 1) == 54758);
+  ASSERT (rotr16 (43981, 2) == 27379);
+  ASSERT (rotr16 (43981, 3) == 46457);
+  ASSERT (rotr16 (43981, 4) == 55996);
+  ASSERT (rotr16 (43981, 5) == 27998);
+  ASSERT (rotr16 (43981, 6) == 13999);
+  ASSERT (rotr16 (43981, 7) == 39767);
+  ASSERT (rotr16 (43981, 8) == 52651);
+  ASSERT (rotr16 (43981, 9) == 59093);
+  ASSERT (rotr16 (43981, 10) == 62314);
+  ASSERT (rotr16 (43981, 11) == 31157);
+  ASSERT (rotr16 (43981, 12) == 48346);
+  ASSERT (rotr16 (43981, 13) == 24173);
+  ASSERT (rotr16 (43981, 14) == 44854);
+  ASSERT (rotr16 (43981, 15) == 22427);
+  ASSERT (rotr16 (43981, 16) == 43981);
+
+  ASSERT (rotl32 (2309737967U, 1) == 324508639U);
+  ASSERT (rotl32 (2309737967U, 2) == 649017278U);
+  ASSERT (rotl32 (2309737967U, 3) == 1298034556U);
+  ASSERT (rotl32 (2309737967U, 4) == 2596069112U);
+  ASSERT (rotl32 (2309737967U, 5) == 897170929U);
+  ASSERT (rotl32 (2309737967U, 6) == 1794341858U);
+  ASSERT (rotl32 (2309737967U, 7) == 3588683716U);
+  ASSERT (rotl32 (2309737967U, 8) == 2882400137U);
+  ASSERT (rotl32 (2309737967U, 9) == 1469832979U);
+  ASSERT (rotl32 (2309737967U, 10) == 2939665958U);
+  ASSERT (rotl32 (2309737967U, 11) == 1584364621U);
+  ASSERT (rotl32 (2309737967U, 12) == 3168729242U);
+  ASSERT (rotl32 (2309737967U, 13) == 2042491189U);
+  ASSERT (rotl32 (2309737967U, 14) == 4084982378U);
+  ASSERT (rotl32 (2309737967U, 15) == 3874997461U);
+  ASSERT (rotl32 (2309737967U, 16) == 3455027627U);
+  ASSERT (rotl32 (2309737967U, 17) == 2615087959U);
+  ASSERT (rotl32 (2309737967U, 18) == 935208623U);
+  ASSERT (rotl32 (2309737967U, 19) == 1870417246U);
+  ASSERT (rotl32 (2309737967U, 20) == 3740834492U);
+  ASSERT (rotl32 (2309737967U, 21) == 3186701689U);
+  ASSERT (rotl32 (2309737967U, 22) == 2078436083U);
+  ASSERT (rotl32 (2309737967U, 23) == 4156872166U);
+  ASSERT (rotl32 (2309737967U, 24) == 4018777037U);
+  ASSERT (rotl32 (2309737967U, 25) == 3742586779U);
+  ASSERT (rotl32 (2309737967U, 26) == 3190206263U);
+  ASSERT (rotl32 (2309737967U, 27) == 2085445231U);
+  ASSERT (rotl32 (2309737967U, 28) == 4170890462U);
+  ASSERT (rotl32 (2309737967U, 29) == 4046813629U);
+  ASSERT (rotl32 (2309737967U, 30) == 3798659963U);
+  ASSERT (rotl32 (2309737967U, 31) == 3302352631U);
+
+  ASSERT (rotr32 (2309737967U, 1) == 3302352631lU);
+  ASSERT (rotr32 (2309737967U, 2) == 3798659963lU);
+  ASSERT (rotr32 (2309737967U, 3) == 4046813629lU);
+  ASSERT (rotr32 (2309737967U, 4) == 4170890462lU);
+  ASSERT (rotr32 (2309737967U, 5) == 2085445231lU);
+  ASSERT (rotr32 (2309737967U, 6) == 3190206263lU);
+  ASSERT (rotr32 (2309737967U, 7) == 3742586779lU);
+  ASSERT (rotr32 (2309737967U, 8) == 4018777037lU);
+  ASSERT (rotr32 (2309737967U, 9) == 4156872166lU);
+  ASSERT (rotr32 (2309737967U, 10) == 2078436083lU);
+  ASSERT (rotr32 (2309737967U, 11) == 3186701689lU);
+  ASSERT (rotr32 (2309737967U, 12) == 3740834492lU);
+  ASSERT (rotr32 (2309737967U, 13) == 1870417246lU);
+  ASSERT (rotr32 (2309737967U, 14) == 935208623lU);
+  ASSERT (rotr32 (2309737967U, 15) == 2615087959lU);
+  ASSERT (rotr32 (2309737967U, 16) == 3455027627lU);
+  ASSERT (rotr32 (2309737967U, 17) == 3874997461lU);
+  ASSERT (rotr32 (2309737967U, 18) == 4084982378lU);
+  ASSERT (rotr32 (2309737967U, 19) == 2042491189lU);
+  ASSERT (rotr32 (2309737967U, 20) == 3168729242lU);
+  ASSERT (rotr32 (2309737967U, 21) == 1584364621lU);
+  ASSERT (rotr32 (2309737967U, 22) == 2939665958lU);
+  ASSERT (rotr32 (2309737967U, 23) == 1469832979lU);
+  ASSERT (rotr32 (2309737967U, 24) == 2882400137lU);
+  ASSERT (rotr32 (2309737967U, 25) == 3588683716lU);
+  ASSERT (rotr32 (2309737967U, 26) == 1794341858lU);
+  ASSERT (rotr32 (2309737967U, 27) == 897170929lU);
+  ASSERT (rotr32 (2309737967U, 28) == 2596069112lU);
+  ASSERT (rotr32 (2309737967U, 29) == 1298034556lU);
+  ASSERT (rotr32 (2309737967U, 30) == 649017278lU);
+  ASSERT (rotr32 (2309737967U, 31) == 324508639lU);
+
+#ifdef UINT64_MAX
+  ASSERT (rotl64 (16045690984503098046ULL, 1) == 13644637895296644477ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 2) == 8842531716883737339ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 3) == 17685063433767474678ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 4) == 16923382793825397741ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 5) == 15400021513941243867ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 6) == 12353298954172936119ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 7) == 6259853834636320623ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 8) == 12519707669272641246ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 9) == 6592671264835730877ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 10) == 13185342529671461754ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 11) == 7923940985633371893ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 12) == 15847881971266743786ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 13) == 13249019868823935957ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 14) == 8051295663938320299ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 15) == 16102591327876640598ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 16) == 13758438582043729581ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 17) == 9070133090377907547ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 18) == 18140266180755815094ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 19) == 17833788287802078573ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 20) == 17220832501894605531ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 21) == 15994920930079659447ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 22) == 13543097786449767279ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 23) == 8639451499189982943ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 24) == 17278902998379965886ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 25) == 16111061923050380157ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 26) == 13775379772391208699ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 27) == 9104015471072865783ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 28) == 18208030942145731566ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 29) == 17969317810581911517ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 30) == 17491891547454271419ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 31) == 16537039021198991223ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 32) == 14627333968688430831ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 33) == 10807923863667310047ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 34) == 3169103653625068479ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 35) == 6338207307250136958ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 36) == 12676414614500273916ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 37) == 6906085155290996217ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 38) == 13812170310581992434ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 39) == 9177596547454433253ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 40) == 18355193094908866506ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 41) == 18263642116108181397ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 42) == 18080540158506811179ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 43) == 17714336243304070743ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 44) == 16981928412898589871ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 45) == 15517112752087628127ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 46) == 12587481430465704639ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 47) == 6728218787221857663ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 48) == 13456437574443715326ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 49) == 8466131075177879037ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 50) == 16932262150355758074ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 51) == 15417780227001964533ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 52) == 12388816380294377451ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 53) == 6330888686879203287ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 54) == 12661777373758406574ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 55) == 6876810673807261533ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 56) == 13753621347614523066ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 57) == 9060498621519494517ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 58) == 18120997243038989034ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 59) == 17795250412368426453ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 60) == 17143756751027301291ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 61) == 15840769428345050967ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 62) == 13234794782980550319ULL);
+  ASSERT (rotl64 (16045690984503098046ULL, 63) == 8022845492251549023ULL);
+
+  ASSERT (rotr64 (16045690984503098046ULL, 1) == 8022845492251549023ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 2) == 13234794782980550319ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 3) == 15840769428345050967ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 4) == 17143756751027301291ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 5) == 17795250412368426453ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 6) == 18120997243038989034ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 7) == 9060498621519494517ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 8) == 13753621347614523066ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 9) == 6876810673807261533ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 10) == 12661777373758406574ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 11) == 6330888686879203287ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 12) == 12388816380294377451ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 13) == 15417780227001964533ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 14) == 16932262150355758074ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 15) == 8466131075177879037ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 16) == 13456437574443715326ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 17) == 6728218787221857663ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 18) == 12587481430465704639ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 19) == 15517112752087628127ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 20) == 16981928412898589871ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 21) == 17714336243304070743ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 22) == 18080540158506811179ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 23) == 18263642116108181397ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 24) == 18355193094908866506ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 25) == 9177596547454433253ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 26) == 13812170310581992434ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 27) == 6906085155290996217ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 28) == 12676414614500273916ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 29) == 6338207307250136958ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 30) == 3169103653625068479ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 31) == 10807923863667310047ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 32) == 14627333968688430831ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 33) == 16537039021198991223ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 34) == 17491891547454271419ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 35) == 17969317810581911517ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 36) == 18208030942145731566ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 37) == 9104015471072865783ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 38) == 13775379772391208699ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 39) == 16111061923050380157ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 40) == 17278902998379965886ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 41) == 8639451499189982943ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 42) == 13543097786449767279ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 43) == 15994920930079659447ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 44) == 17220832501894605531ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 45) == 17833788287802078573ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 46) == 18140266180755815094ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 47) == 9070133090377907547ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 48) == 13758438582043729581ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 49) == 16102591327876640598ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 50) == 8051295663938320299ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 51) == 13249019868823935957ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 52) == 15847881971266743786ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 53) == 7923940985633371893ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 54) == 13185342529671461754ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 55) == 6592671264835730877ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 56) == 12519707669272641246ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 57) == 6259853834636320623ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 58) == 12353298954172936119ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 59) == 15400021513941243867ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 60) == 16923382793825397741ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 61) == 17685063433767474678ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 62) == 8842531716883737339ULL);
+  ASSERT (rotr64 (16045690984503098046ULL, 63) == 13644637895296644477ULL);
+#endif /* UINT64_MAX */
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-btowc.c b/src/grep/gnulib-tests/test-btowc.c
new file mode 100644
index 0000000..040abff
--- /dev/null
+++ b/src/grep/gnulib-tests/test-btowc.c
@@ -0,0 +1,63 @@
+/* Test of conversion of unibyte character to wide character.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (btowc, wint_t, (int));
+
+#include <locale.h>
+#include <stdio.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  int c;
+
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  ASSERT (btowc (EOF) == WEOF);
+
+  if (argc > 1)
+    switch (argv[1][0])
+      {
+      case '1':
+        /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
+        for (c = 0; c < 0x80; c++)
+          ASSERT (btowc (c) == c);
+        for (c = 0xA0; c < 0x100; c++)
+          ASSERT (btowc (c) != WEOF);
+        return 0;
+
+      case '2':
+        /* Locale encoding is UTF-8.  */
+        for (c = 0; c < 0x80; c++)
+          ASSERT (btowc (c) == c);
+        for (c = 0x80; c < 0x100; c++)
+          ASSERT (btowc (c) == WEOF);
+        return 0;
+      }
+
+  return 1;
+}
diff --git a/src/grep/gnulib-tests/test-btowc1.sh b/src/grep/gnulib-tests/test-btowc1.sh
new file mode 100755
index 0000000..ab4b287
--- /dev/null
+++ b/src/grep/gnulib-tests/test-btowc1.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no traditional french locale is installed"
+  else
+    echo "Skipping test: no traditional french locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR \
+${CHECKER} ./test-btowc${EXEEXT} 1
diff --git a/src/grep/gnulib-tests/test-btowc2.sh b/src/grep/gnulib-tests/test-btowc2.sh
new file mode 100755
index 0000000..d7d4d9c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-btowc2.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no french Unicode locale is installed"
+  else
+    echo "Skipping test: no french Unicode locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR_UTF8 \
+${CHECKER} ./test-btowc${EXEEXT} 2
diff --git a/src/grep/gnulib-tests/test-c-ctype.c b/src/grep/gnulib-tests/test-c-ctype.c
new file mode 100644
index 0000000..2077eb4
--- /dev/null
+++ b/src/grep/gnulib-tests/test-c-ctype.c
@@ -0,0 +1,228 @@
+/* Test of character handling in C locale.
+   Copyright (C) 2005, 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
+
+#include <config.h>
+
+#include "c-ctype.h"
+
+#include <ctype.h>
+#include <limits.h>
+#include <locale.h>
+
+#include "macros.h"
+
+static void
+test_agree_with_C_locale (void)
+{
+  int c;
+
+  for (c = 0; c <= UCHAR_MAX; c++)
+    {
+      ASSERT (c_isascii (c) == (isascii (c) != 0));
+      if (c_isascii (c))
+        {
+          ASSERT (c_isalnum (c) == (isalnum (c) != 0));
+          ASSERT (c_isalpha (c) == (isalpha (c) != 0));
+          ASSERT (c_isblank (c) == (isblank (c) != 0));
+          ASSERT (c_iscntrl (c) == (iscntrl (c) != 0));
+          ASSERT (c_isdigit (c) == (isdigit (c) != 0));
+          ASSERT (c_islower (c) == (islower (c) != 0));
+          ASSERT (c_isgraph (c) == (isgraph (c) != 0));
+          ASSERT (c_isprint (c) == (isprint (c) != 0));
+          ASSERT (c_ispunct (c) == (ispunct (c) != 0));
+          ASSERT (c_isspace (c) == (isspace (c) != 0));
+          ASSERT (c_isupper (c) == (isupper (c) != 0));
+          ASSERT (c_isxdigit (c) == (isxdigit (c) != 0));
+          ASSERT (c_tolower (c) == tolower (c));
+          ASSERT (c_toupper (c) == toupper (c));
+        }
+    }
+}
+
+static void
+test_all (void)
+{
+  int c;
+  int n_isascii = 0;
+
+  for (c = CHAR_MIN; c <= UCHAR_MAX; c++)
+    {
+      if (! (0 <= c && c <= CHAR_MAX))
+        {
+          ASSERT (! c_isascii (c));
+          ASSERT (! c_isalnum (c));
+          ASSERT (! c_isalpha (c));
+          ASSERT (! c_isblank (c));
+          ASSERT (! c_iscntrl (c));
+          ASSERT (! c_isdigit (c));
+          ASSERT (! c_islower (c));
+          ASSERT (! c_isgraph (c));
+          ASSERT (! c_isprint (c));
+          ASSERT (! c_ispunct (c));
+          ASSERT (! c_isspace (c));
+          ASSERT (! c_isupper (c));
+          ASSERT (! c_isxdigit (c));
+          ASSERT (c_tolower (c) == c);
+          ASSERT (c_toupper (c) == c);
+        }
+
+      n_isascii += c_isascii (c);
+
+#ifdef C_CTYPE_ASCII
+      ASSERT (c_isascii (c) == (0 <= c && c <= 0x7f));
+#endif
+
+      ASSERT (c_isascii (c) == (c_isprint (c) || c_iscntrl (c)));
+
+      ASSERT (c_isalnum (c) == (c_isalpha (c) || c_isdigit (c)));
+
+      ASSERT (c_isalpha (c) == (c_islower (c) || c_isupper (c)));
+
+      switch (c)
+        {
+        case '\t': case ' ':
+          ASSERT (c_isblank (c) == 1);
+          break;
+        default:
+          ASSERT (c_isblank (c) == 0);
+          break;
+        }
+
+#ifdef C_CTYPE_ASCII
+      ASSERT (c_iscntrl (c) == ((c >= 0 && c < 0x20) || c == 0x7f));
+#endif
+
+      switch (c)
+        {
+        case '\a': case '\b': case '\f': case '\n':
+        case '\r': case '\t': case '\v':
+          ASSERT (c_iscntrl (c));
+          break;
+        }
+
+      ASSERT (! (c_iscntrl (c) && c_isprint (c)));
+
+      switch (c)
+        {
+        case '0': case '1': case '2': case '3': case '4': case '5':
+        case '6': case '7': case '8': case '9':
+          ASSERT (c_isdigit (c) == 1);
+          break;
+        default:
+          ASSERT (c_isdigit (c) == 0);
+          break;
+        }
+
+      switch (c)
+        {
+        case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+        case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
+        case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
+        case 's': case 't': case 'u': case 'v': case 'w': case 'x':
+        case 'y': case 'z':
+          ASSERT (c_islower (c) == 1);
+          ASSERT (c_toupper (c) == c - 'a' + 'A');
+          break;
+        default:
+          ASSERT (c_islower (c) == 0);
+          ASSERT (c_toupper (c) == c);
+          break;
+        }
+
+#ifdef C_CTYPE_ASCII
+      ASSERT (c_isgraph (c) == ((c >= 0x20 && c < 0x7f) && c != ' '));
+
+      ASSERT (c_isprint (c) == (c >= 0x20 && c < 0x7f));
+#endif
+
+      ASSERT (c_isgraph (c) == (c_isalnum (c) || c_ispunct (c)));
+
+      ASSERT (c_isprint (c) == (c_isgraph (c) || c == ' '));
+
+      switch (c)
+        {
+        case '!': case '"': case '#': case '$': case '%': case '&': case '\'':
+        case '(': case ')': case '*': case '+': case ',': case '-': case '.':
+        case '/': case ':': case ';': case '<': case '=': case '>': case '?':
+        case '@': case '[': case'\\': case ']': case '^': case '_': case '`':
+        case '{': case '|': case '}': case '~':
+          ASSERT (c_ispunct (c) == 1);
+          break;
+        default:
+          ASSERT (c_ispunct (c) == 0);
+          break;
+        }
+
+      switch (c)
+        {
+        case ' ': case '\t': case '\n': case '\v': case '\f': case '\r':
+          ASSERT (c_isspace (c) == 1);
+          break;
+        default:
+          ASSERT (c_isspace (c) == 0);
+          break;
+        }
+
+      switch (c)
+        {
+        case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+        case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
+        case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
+        case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
+        case 'Y': case 'Z':
+          ASSERT (c_isupper (c) == 1);
+          ASSERT (c_tolower (c) == c - 'A' + 'a');
+          break;
+        default:
+          ASSERT (c_isupper (c) == 0);
+          ASSERT (c_tolower (c) == c);
+          break;
+        }
+
+      switch (c)
+        {
+        case '0': case '1': case '2': case '3': case '4': case '5':
+        case '6': case '7': case '8': case '9':
+        case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+        case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+          ASSERT (c_isxdigit (c) == 1);
+          break;
+        default:
+          ASSERT (c_isxdigit (c) == 0);
+          break;
+        }
+    }
+
+  ASSERT (n_isascii == 128);
+}
+
+int
+main ()
+{
+  test_agree_with_C_locale ();
+
+  test_all ();
+
+  setlocale (LC_ALL, "de_DE");
+  test_all ();
+
+  setlocale (LC_ALL, "ja_JP.EUC-JP");
+  test_all ();
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-c-stack.c b/src/grep/gnulib-tests/test-c-stack.c
new file mode 100644
index 0000000..2c5a49a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-c-stack.c
@@ -0,0 +1,73 @@
+/* Test of c-stack module.
+   Copyright (C) 2002, 2004, 2006, 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "c-stack.h"
+
+#include "exitfail.h"
+#include <stdio.h>
+#if HAVE_SETRLIMIT
+/* At least FreeBSD 5.0 needs extra headers before <sys/resource.h>
+   will compile.  */
+# include <sys/types.h>
+# include <sys/time.h>
+# include <sys/resource.h>
+#endif
+
+#include "macros.h"
+
+static volatile int *
+recurse_1 (volatile int n, volatile int *p)
+{
+  if (n >= 0)
+    *recurse_1 (n + 1, p) += n;
+  return p;
+}
+
+static int
+recurse (volatile int n)
+{
+  int sum = 0;
+  return *recurse_1 (n, &sum);
+}
+
+int
+main (int argc, char **argv)
+{
+#if HAVE_SETRLIMIT && defined RLIMIT_STACK
+  /* Before starting the endless recursion, try to be friendly to the
+     user's machine.  On some Linux 2.2.x systems, there is no stack
+     limit for user processes at all.  We don't want to kill such
+     systems.  */
+  struct rlimit rl;
+  rl.rlim_cur = rl.rlim_max = 0x100000; /* 1 MB */
+  setrlimit (RLIMIT_STACK, &rl);
+#endif
+
+  if (c_stack_action (NULL) == 0)
+    {
+      if (1 < argc)
+        {
+          exit_failure = 77;
+          ++*argv[argc]; /* Intentionally dereference NULL.  */
+        }
+      return recurse (0);
+    }
+  fputs ("skipping test: ", stderr);
+  perror ("c_stack_action");
+  return 77;
+}
diff --git a/src/grep/gnulib-tests/test-c-stack.sh b/src/grep/gnulib-tests/test-c-stack.sh
new file mode 100755
index 0000000..54009d3
--- /dev/null
+++ b/src/grep/gnulib-tests/test-c-stack.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="t-c-stack.tmp"
+${CHECKER} ./test-c-stack${EXEEXT} 2> t-c-stack.tmp
+case $? in
+  77) cat t-c-stack.tmp >&2; (exit 77); exit 77 ;;
+  1) ;;
+  *) (exit 1); exit 1 ;;
+esac
+if grep 'stack overflow' t-c-stack.tmp >/dev/null ; then
+  :
+else
+  (exit 1); exit 1
+fi
+
+rm -fr $tmpfiles
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-c-stack2.sh b/src/grep/gnulib-tests/test-c-stack2.sh
new file mode 100755
index 0000000..7f03593
--- /dev/null
+++ b/src/grep/gnulib-tests/test-c-stack2.sh
@@ -0,0 +1,43 @@
+#!/bin/sh
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="t-c-stack2.tmp"
+
+# Sanitize exit status within a subshell, since some shells fail to
+# redirect stderr on their message about death due to signal.
+(${CHECKER} ./test-c-stack${EXEEXT} 1; exit $?) 2> t-c-stack2.tmp
+
+case $? in
+  77) if grep 'stack overflow' t-c-stack2.tmp >/dev/null ; then
+        if test -z "$LIBSIGSEGV"; then
+          echo 'cannot tell stack overflow from crash; consider installing libsigsegv' >&2
+          exit 77
+        else
+          echo 'cannot tell stack overflow from crash, in spite of libsigsegv' >&2
+          exit 1
+        fi
+      else
+        cat t-c-stack2.tmp >&2
+        exit 77
+      fi
+      ;;
+  1)
+      # Dereferencing NULL exits the program with status 1,
+      # so this test doesn't check the c-stack testing harness like it should.
+      # https://lists.gnu.org/r/grep-devel/2020-09/msg00034.html
+      cat t-c-stack2.tmp >&2
+      echo 'skipping test (perhaps gcc -fsanitize=undefined is in use?)'
+      exit 77;;
+  0) (exit 1); exit 1 ;;
+esac
+if grep 'program error' t-c-stack2.tmp >/dev/null ; then
+  :
+else
+  (exit 1); exit 1
+fi
+
+rm -fr $tmpfiles
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-c-strcase.sh b/src/grep/gnulib-tests/test-c-strcase.sh
new file mode 100755
index 0000000..14bdfb2
--- /dev/null
+++ b/src/grep/gnulib-tests/test-c-strcase.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+# Test in the C locale.
+${CHECKER} ./test-c-strcasecmp${EXEEXT} || exit 1
+${CHECKER} ./test-c-strncasecmp${EXEEXT} || exit 1
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR ${CHECKER} ./test-c-strcasecmp${EXEEXT} locale || exit 1
+  LC_ALL=$LOCALE_FR ${CHECKER} ./test-c-strncasecmp${EXEEXT} locale || exit 1
+fi
+
+# Test in a Turkish UTF-8 locale.
+: ${LOCALE_TR_UTF8=tr_TR.UTF-8}
+if test $LOCALE_TR_UTF8 != none; then
+  LC_ALL=$LOCALE_TR_UTF8 ${CHECKER} ./test-c-strcasecmp${EXEEXT} locale || exit 1
+  LC_ALL=$LOCALE_TR_UTF8 ${CHECKER} ./test-c-strncasecmp${EXEEXT} locale || exit 1
+fi
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-c-strcasecmp.c b/src/grep/gnulib-tests/test-c-strcasecmp.c
new file mode 100644
index 0000000..cc2efb0
--- /dev/null
+++ b/src/grep/gnulib-tests/test-c-strcasecmp.c
@@ -0,0 +1,68 @@
+/* Test of case-insensitive string comparison function.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "c-strcase.h"
+#include "c-ctype.h"
+
+#include <locale.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  if (argc > 1)
+    {
+      /* configure should already have checked that the locale is supported.  */
+      if (setlocale (LC_ALL, "") == NULL)
+        return 1;
+    }
+
+  ASSERT (c_strcasecmp ("paragraph", "Paragraph") == 0);
+
+  ASSERT (c_strcasecmp ("paragrapH", "parAgRaph") == 0);
+
+  ASSERT (c_strcasecmp ("paragraph", "paraLyzed") < 0);
+  ASSERT (c_strcasecmp ("paraLyzed", "paragraph") > 0);
+
+  ASSERT (c_strcasecmp ("para", "paragraph") < 0);
+  ASSERT (c_strcasecmp ("paragraph", "para") > 0);
+
+  /* The following tests shows how c_strcasecmp() is different from
+     strcasecmp().  */
+
+  ASSERT (c_strcasecmp ("\311mile", "\351mile") < 0);
+  ASSERT (c_strcasecmp ("\351mile", "\311mile") > 0);
+
+  /* The following tests shows how c_strcasecmp() is different from
+     mbscasecmp().  */
+
+  ASSERT (c_strcasecmp ("\303\266zg\303\274r", "\303\226ZG\303\234R") > 0); /* özgür */
+  ASSERT (c_strcasecmp ("\303\226ZG\303\234R", "\303\266zg\303\274r") < 0); /* özgür */
+
+#if C_CTYPE_ASCII
+  /* This test shows how strings of different size cannot compare equal.  */
+  ASSERT (c_strcasecmp ("turkish", "TURK\304\260SH") < 0);
+  ASSERT (c_strcasecmp ("TURK\304\260SH", "turkish") > 0);
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-c-strncasecmp.c b/src/grep/gnulib-tests/test-c-strncasecmp.c
new file mode 100644
index 0000000..6cbdce0
--- /dev/null
+++ b/src/grep/gnulib-tests/test-c-strncasecmp.c
@@ -0,0 +1,82 @@
+/* Test of case-insensitive string comparison function.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "c-strcase.h"
+#include "c-ctype.h"
+
+#include <locale.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  if (argc > 1)
+    {
+      /* configure should already have checked that the locale is supported.  */
+      if (setlocale (LC_ALL, "") == NULL)
+        return 1;
+    }
+
+  ASSERT (c_strncasecmp ("paragraph", "Paragraph", 1000000) == 0);
+  ASSERT (c_strncasecmp ("paragraph", "Paragraph", 9) == 0);
+
+  ASSERT (c_strncasecmp ("paragrapH", "parAgRaph", 1000000) == 0);
+  ASSERT (c_strncasecmp ("paragrapH", "parAgRaph", 9) == 0);
+
+  ASSERT (c_strncasecmp ("paragraph", "paraLyzed", 10) < 0);
+  ASSERT (c_strncasecmp ("paragraph", "paraLyzed", 9) < 0);
+  ASSERT (c_strncasecmp ("paragraph", "paraLyzed", 5) < 0);
+  ASSERT (c_strncasecmp ("paragraph", "paraLyzed", 4) == 0);
+  ASSERT (c_strncasecmp ("paraLyzed", "paragraph", 10) > 0);
+  ASSERT (c_strncasecmp ("paraLyzed", "paragraph", 9) > 0);
+  ASSERT (c_strncasecmp ("paraLyzed", "paragraph", 5) > 0);
+  ASSERT (c_strncasecmp ("paraLyzed", "paragraph", 4) == 0);
+
+  ASSERT (c_strncasecmp ("para", "paragraph", 10) < 0);
+  ASSERT (c_strncasecmp ("para", "paragraph", 9) < 0);
+  ASSERT (c_strncasecmp ("para", "paragraph", 5) < 0);
+  ASSERT (c_strncasecmp ("para", "paragraph", 4) == 0);
+  ASSERT (c_strncasecmp ("paragraph", "para", 10) > 0);
+  ASSERT (c_strncasecmp ("paragraph", "para", 9) > 0);
+  ASSERT (c_strncasecmp ("paragraph", "para", 5) > 0);
+  ASSERT (c_strncasecmp ("paragraph", "para", 4) == 0);
+
+  /* The following tests shows how c_strncasecmp() is different from
+     strncasecmp().  */
+
+  ASSERT (c_strncasecmp ("\311mily", "\351mile", 4) < 0);
+  ASSERT (c_strncasecmp ("\351mile", "\311mily", 4) > 0);
+
+  /* The following tests shows how c_strncasecmp() is different from
+     mbsncasecmp().  */
+
+  ASSERT (c_strncasecmp ("\303\266zg\303\274r", "\303\226ZG\303\234R", 99) > 0); /* özgür */
+  ASSERT (c_strncasecmp ("\303\226ZG\303\234R", "\303\266zg\303\274r", 99) < 0); /* özgür */
+
+#if C_CTYPE_ASCII
+  /* This test shows how strings of different size cannot compare equal.  */
+  ASSERT (c_strncasecmp ("turkish", "TURK\304\260SH", 7) < 0);
+  ASSERT (c_strncasecmp ("TURK\304\260SH", "turkish", 7) > 0);
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-calloc-gnu.c b/src/grep/gnulib-tests/test-calloc-gnu.c
new file mode 100644
index 0000000..a98a75f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-calloc-gnu.c
@@ -0,0 +1,73 @@
+/* Test of calloc function.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <errno.h>
+#include <stdint.h>
+
+#include "macros.h"
+
+/* Return N.
+   Usual compilers are not able to infer something about the return value.  */
+static size_t
+identity (size_t n)
+{
+  unsigned int x = rand ();
+  unsigned int y = x * x * x * x;
+  x++; y |= x * x * x * x;
+  x++; y |= x * x * x * x;
+  x++; y |= x * x * x * x;
+  y = y >> 1;
+  y &= -y;
+  y -= 8;
+  /* At this point Y is zero but GCC doesn't infer this.  */
+  return n + y;
+}
+
+int
+main ()
+{
+  /* Check that calloc (0, 0) is not a NULL pointer.  */
+  {
+    void * volatile p = calloc (0, 0);
+    ASSERT (p != NULL);
+    free (p);
+  }
+
+  /* Check that calloc fails when requested to allocate a block of memory
+     larger than PTRDIFF_MAX or SIZE_MAX bytes.
+     Use 'identity' to avoid a compiler warning from GCC 7.
+     'volatile' is needed to defeat an incorrect optimization by clang 10,
+     see <https://bugs.llvm.org/show_bug.cgi?id=46055>.  */
+  {
+    for (size_t n = 2; n != 0; n <<= 1)
+      {
+        void *volatile p = calloc (PTRDIFF_MAX / n + 1, identity (n));
+        ASSERT (p == NULL);
+        ASSERT (errno == ENOMEM);
+
+	p = calloc (SIZE_MAX / n + 1, identity (n));
+        ASSERT (p == NULL);
+        ASSERT (errno == ENOMEM);
+      }
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-chdir.c b/src/grep/gnulib-tests/test-chdir.c
new file mode 100644
index 0000000..3b247d7
--- /dev/null
+++ b/src/grep/gnulib-tests/test-chdir.c
@@ -0,0 +1,33 @@
+/* Test changing to a directory.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (chdir, int, (const char *));
+
+#include "macros.h"
+
+int
+main (void)
+{
+  ASSERT (chdir ("/") == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-cloexec.c b/src/grep/gnulib-tests/test-cloexec.c
new file mode 100644
index 0000000..660e455
--- /dev/null
+++ b/src/grep/gnulib-tests/test-cloexec.c
@@ -0,0 +1,148 @@
+/* Test duplicating non-inheritable file descriptors.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include "cloexec.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#endif
+
+#include "binary-io.h"
+#include "macros.h"
+
+/* Return non-zero if FD is open and inheritable across exec/spawn.  */
+static int
+is_inheritable (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD flags;
+  if (h == INVALID_HANDLE_VALUE || GetHandleInformation (h, &flags) == 0)
+    return 0;
+  return (flags & HANDLE_FLAG_INHERIT) != 0;
+#else
+# ifndef F_GETFD
+#  error Please port fcntl to your platform
+# endif
+  int i = fcntl (fd, F_GETFD);
+  return 0 <= i && (i & FD_CLOEXEC) == 0;
+#endif
+}
+
+#if !O_BINARY
+# define set_binary_mode(f,m) zero ()
+static int zero (void) { return 0; }
+#endif
+
+/* Return non-zero if FD is open in the given MODE, which is either
+   O_TEXT or O_BINARY.  */
+static int
+is_mode (int fd, int mode)
+{
+  int value = set_binary_mode (fd, O_BINARY);
+  set_binary_mode (fd, value);
+  return mode == value;
+}
+
+int
+main (void)
+{
+  const char *file = "test-cloexec.tmp";
+  int fd = creat (file, 0600);
+  int fd2;
+  int bad_fd = getdtablesize ();
+
+  /* Assume std descriptors were provided by invoker.  */
+  ASSERT (STDERR_FILENO < fd);
+  ASSERT (is_inheritable (fd));
+
+  /* Normal use of set_cloexec_flag.  */
+  ASSERT (set_cloexec_flag (fd, true) == 0);
+#if !(defined _WIN32 && ! defined __CYGWIN__)
+  ASSERT (!is_inheritable (fd));
+#endif
+  ASSERT (set_cloexec_flag (fd, false) == 0);
+  ASSERT (is_inheritable (fd));
+
+  /* Normal use of dup_cloexec.  */
+  fd2 = dup_cloexec (fd);
+  ASSERT (fd < fd2);
+  ASSERT (!is_inheritable (fd2));
+  ASSERT (close (fd) == 0);
+  ASSERT (dup_cloexec (fd2) == fd);
+  ASSERT (!is_inheritable (fd));
+  ASSERT (close (fd2) == 0);
+
+  /* On systems that distinguish between text and binary mode,
+     dup_cloexec reuses the mode of the source.  */
+  set_binary_mode (fd, O_BINARY);
+  ASSERT (is_mode (fd, O_BINARY));
+  fd2 = dup_cloexec (fd);
+  ASSERT (fd < fd2);
+  ASSERT (is_mode (fd2, O_BINARY));
+  ASSERT (close (fd2) == 0);
+  set_binary_mode (fd, O_TEXT);
+  ASSERT (is_mode (fd, O_TEXT));
+  fd2 = dup_cloexec (fd);
+  ASSERT (fd < fd2);
+  ASSERT (is_mode (fd2, O_TEXT));
+  ASSERT (close (fd2) == 0);
+
+  /* Test error handling.  */
+  errno = 0;
+  ASSERT (set_cloexec_flag (-1, false) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (set_cloexec_flag (bad_fd, false) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (set_cloexec_flag (fd2, false) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (dup_cloexec (-1) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (dup_cloexec (bad_fd) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (dup_cloexec (fd2) == -1);
+  ASSERT (errno == EBADF);
+
+  /* Clean up.  */
+  ASSERT (close (fd) == 0);
+  ASSERT (unlink (file) == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-close.c b/src/grep/gnulib-tests/test-close.c
new file mode 100644
index 0000000..992475f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-close.c
@@ -0,0 +1,45 @@
+/* Test closing a file or socket.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (close, int, (int));
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (close (-1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (close (99) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-connect.c b/src/grep/gnulib-tests/test-connect.c
new file mode 100644
index 0000000..5e2905b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-connect.c
@@ -0,0 +1,60 @@
+/* Test connecting a client socket.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (connect, int, (int, const struct sockaddr *, socklen_t));
+
+#include <errno.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+
+#include "sockets.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  (void) gl_sockets_startup (SOCKETS_1_1);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    struct sockaddr_in addr;
+
+    addr.sin_family = AF_INET;
+    inet_pton (AF_INET, "127.0.0.1", &addr.sin_addr);
+    addr.sin_port = htons (80);
+    {
+      errno = 0;
+      ASSERT (connect (-1, (const struct sockaddr *) &addr, sizeof (addr))
+              == -1);
+      ASSERT (errno == EBADF);
+    }
+    {
+      close (99);
+      errno = 0;
+      ASSERT (connect (99, (const struct sockaddr *) &addr, sizeof (addr))
+              == -1);
+      ASSERT (errno == EBADF);
+    }
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-ctype.c b/src/grep/gnulib-tests/test-ctype.c
new file mode 100644
index 0000000..43256a4
--- /dev/null
+++ b/src/grep/gnulib-tests/test-ctype.c
@@ -0,0 +1,27 @@
+/* Test of <ctype.h> substitute.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <ctype.h>
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-dfa-invalid-char-class.sh b/src/grep/gnulib-tests/test-dfa-invalid-char-class.sh
new file mode 100755
index 0000000..10c408c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-dfa-invalid-char-class.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+# This use of our DFA-testing helper would fail for grep-2.21.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+# Add "." to PATH for the use of test-dfa-match-aux.
+path_prepend_ .
+
+fail=0
+
+echo 'dfaerror: invalid character class' > exp
+LC_ALL=C ${CHECKER} test-dfa-match-aux '[[:foo:]]' a > out 2>&1
+compare exp out || fail=1
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-dfa-invalid-merge.sh b/src/grep/gnulib-tests/test-dfa-invalid-merge.sh
new file mode 100755
index 0000000..e527dca
--- /dev/null
+++ b/src/grep/gnulib-tests/test-dfa-invalid-merge.sh
@@ -0,0 +1,31 @@
+#!/bin/sh
+# The DFA matcher would wrongly convert a regular expression like
+# a+a+a to a+a, thus possibly reporting a false match.
+# Introduced in v0.1-2111-g4299106ce
+
+# Copyright 2020-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+# Add "." to PATH for the use of test-dfa-match-aux.
+path_prepend_ .
+
+fail=0
+
+LC_ALL=C returns_ 0 ${CHECKER} test-dfa-match-aux 'x+x+x+' xx > out 2>&1
+compare /dev/null out || fail=1
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-dfa-match-aux.c b/src/grep/gnulib-tests/test-dfa-match-aux.c
new file mode 100644
index 0000000..7b7706a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-dfa-match-aux.c
@@ -0,0 +1,73 @@
+/* Auxiliary program to test a DFA code path that cannot be triggered
+   by grep or gawk.
+   Copyright 2014-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+#include <config.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <regex.h>
+#include <dfa.h>
+#include <localeinfo.h>
+
+_Noreturn void
+dfaerror (char const *mesg)
+{
+  printf ("dfaerror: %s\n", mesg);
+  exit (EXIT_FAILURE);
+}
+
+static int exit_status = EXIT_SUCCESS;
+
+void
+dfawarn (char const *mesg)
+{
+  printf ("dfawarn: %s\n", mesg);
+  exit_status = EXIT_FAILURE;
+}
+
+int
+main (int argc, char **argv)
+{
+  struct dfa *dfa;
+  char *beg, *end, *p;
+  int allow_nl;
+  struct localeinfo localeinfo;
+
+  if (argc < 3)
+    exit (EXIT_FAILURE);
+
+  setlocale (LC_ALL, "");
+  init_localeinfo (&localeinfo);
+
+  dfa = dfaalloc ();
+  dfasyntax (dfa, &localeinfo, RE_SYNTAX_EGREP | RE_NO_EMPTY_RANGES, 0);
+  dfacomp (argv[1], strlen (argv[1]), dfa, 0);
+
+  beg = argv[2];
+  end = argv[2] + strlen (argv[2]);
+  allow_nl = argc > 3 && atoi (argv[3]);
+
+  p = dfaexec (dfa, beg, end, allow_nl, NULL, NULL);
+
+  if (p != NULL)
+    printf ("%zd\n", p - beg);
+
+  exit (exit_status);
+}
diff --git a/src/grep/gnulib-tests/test-dfa-match.sh b/src/grep/gnulib-tests/test-dfa-match.sh
new file mode 100755
index 0000000..983cdae
--- /dev/null
+++ b/src/grep/gnulib-tests/test-dfa-match.sh
@@ -0,0 +1,45 @@
+#!/bin/sh
+# This would fail with grep-2.21's dfa.c.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+# Add "." to PATH for the use of test-dfa-match-aux.
+path_prepend_ .
+
+if (type timeout) >/dev/null 2>&1; then
+    # Busybox's timeout required -t until its 1.30.0 release on 2018-12-31,
+    # after which it became compatible with coreutils' timeout.
+  if timeout --help 2>&1 | grep BusyBox && timeout -t 0 true; then
+    timeout_10='timeout -t 10'
+  else
+    timeout_10='timeout 10'
+  fi
+else
+  timeout_10=
+fi
+
+fail=0
+
+${CHECKER} test-dfa-match-aux a ba 0 > out || fail=1
+compare /dev/null out || fail=1
+
+in=$(printf "bb\nbb")
+$timeout_10 ${CHECKER} test-dfa-match-aux a "$in" 1 > out || fail=1
+compare /dev/null out || fail=1
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-dirent.c b/src/grep/gnulib-tests/test-dirent.c
new file mode 100644
index 0000000..e964330
--- /dev/null
+++ b/src/grep/gnulib-tests/test-dirent.c
@@ -0,0 +1,32 @@
+/* Test of <dirent.h> substitute.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <dirent.h>
+
+/* Check for existence of required types.  */
+static DIR *dir _GL_UNUSED;
+static struct dirent d;
+static ino_t i;
+
+int
+main (void)
+{
+  return d.d_name[0] + i;
+}
diff --git a/src/grep/gnulib-tests/test-dup-safer.c b/src/grep/gnulib-tests/test-dup-safer.c
new file mode 100644
index 0000000..7ad768f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-dup-safer.c
@@ -0,0 +1,180 @@
+/* Test that dup_safer leaves standard fds alone.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include "unistd--.h"
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "binary-io.h"
+#include "cloexec.h"
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#endif
+
+#if !O_BINARY
+# define set_binary_mode(f,m) zero ()
+static int zero (void) { return 0; }
+#endif
+
+/* This test intentionally closes stderr.  So, we arrange to have fd 10
+   (outside the range of interesting fd's during the test) set up to
+   duplicate the original stderr.  */
+
+#define BACKUP_STDERR_FILENO 10
+#define ASSERT_STREAM myerr
+#include "macros.h"
+
+static FILE *myerr;
+
+/* Return true if FD is open.  */
+static bool
+is_open (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
+#else
+# ifndef F_GETFL
+#  error Please port fcntl to your platform
+# endif
+  return 0 <= fcntl (fd, F_GETFL);
+#endif
+}
+
+/* Return true if FD is open and inheritable across exec/spawn.  */
+static bool
+is_inheritable (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD flags;
+  if (h == INVALID_HANDLE_VALUE || GetHandleInformation (h, &flags) == 0)
+    return 0;
+  return (flags & HANDLE_FLAG_INHERIT) != 0;
+#else
+# ifndef F_GETFD
+#  error Please port fcntl to your platform
+# endif
+  int i = fcntl (fd, F_GETFD);
+  return 0 <= i && (i & FD_CLOEXEC) == 0;
+#endif
+}
+
+/* Return true if FD is open in the given MODE, which is either
+   O_TEXT or O_BINARY.  */
+static bool
+is_mode (int fd, int mode)
+{
+  int value = set_binary_mode (fd, O_BINARY);
+  set_binary_mode (fd, value);
+  return mode == value;
+}
+
+#define witness "test-dup-safer.txt"
+
+int
+main (void)
+{
+  int i;
+  int fd;
+  int bad_fd = getdtablesize ();
+
+  /* We close fd 2 later, so save it in fd 10.  */
+  if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO
+      || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)
+    return 2;
+
+  /* Create file for later checks.  */
+  fd = creat (witness, 0600);
+  ASSERT (STDERR_FILENO < fd);
+
+  /* Four iterations, with progressively more standard descriptors
+     closed.  */
+  for (i = -1; i <= STDERR_FILENO; i++)
+    {
+      if (0 <= i)
+        ASSERT (close (i) == 0);
+
+      /* Detect errors.  */
+      errno = 0;
+      ASSERT (dup (-1) == -1);
+      ASSERT (errno == EBADF);
+      errno = 0;
+      ASSERT (dup (bad_fd) == -1);
+      ASSERT (errno == EBADF);
+      close (fd + 1);
+      errno = 0;
+      ASSERT (dup (fd + 1) == -1);
+      ASSERT (errno == EBADF);
+
+      /* Preserve text vs. binary.  */
+      set_binary_mode (fd, O_BINARY);
+      ASSERT (dup (fd) == fd + 1);
+      ASSERT (is_open (fd + 1));
+      ASSERT (is_inheritable (fd + 1));
+      ASSERT (is_mode (fd + 1, O_BINARY));
+
+      ASSERT (close (fd + 1) == 0);
+      set_binary_mode (fd, O_TEXT);
+      ASSERT (dup (fd) == fd + 1);
+      ASSERT (is_open (fd + 1));
+      ASSERT (is_inheritable (fd + 1));
+      ASSERT (is_mode (fd + 1, O_TEXT));
+
+      /* Create cloexec copy.  */
+      ASSERT (close (fd + 1) == 0);
+      ASSERT (fd_safer_flag (dup_cloexec (fd), O_CLOEXEC) == fd + 1);
+      ASSERT (set_cloexec_flag (fd + 1, true) == 0);
+      ASSERT (is_open (fd + 1));
+      ASSERT (!is_inheritable (fd + 1));
+      ASSERT (close (fd) == 0);
+
+      /* dup always creates inheritable copies.  Also, check that
+         earliest slot past std fds is used.  */
+      ASSERT (dup (fd + 1) == fd);
+      ASSERT (is_open (fd));
+      ASSERT (is_inheritable (fd));
+      ASSERT (close (fd + 1) == 0);
+    }
+
+  /* Cleanup.  */
+  ASSERT (close (fd) == 0);
+  ASSERT (unlink (witness) == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-dup.c b/src/grep/gnulib-tests/test-dup.c
new file mode 100644
index 0000000..52dd891
--- /dev/null
+++ b/src/grep/gnulib-tests/test-dup.c
@@ -0,0 +1,45 @@
+/* Test duplicating a file descriptor.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (dup, int, (int));
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (dup (-1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (dup (99) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-dup2.c b/src/grep/gnulib-tests/test-dup2.c
new file mode 100644
index 0000000..6c2e65e
--- /dev/null
+++ b/src/grep/gnulib-tests/test-dup2.c
@@ -0,0 +1,222 @@
+/* Test duplicating file descriptors.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (dup2, int, (int, int));
+
+#include <errno.h>
+#include <fcntl.h>
+
+#if HAVE_SYS_RESOURCE_H
+# include <sys/resource.h>
+#endif
+
+#include "binary-io.h"
+
+#if GNULIB_TEST_CLOEXEC
+# include "cloexec.h"
+#endif
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#endif
+
+#include "macros.h"
+
+/* Return non-zero if FD is open.  */
+static int
+is_open (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
+#else
+# ifndef F_GETFL
+#  error Please port fcntl to your platform
+# endif
+  return 0 <= fcntl (fd, F_GETFL);
+#endif
+}
+
+#if GNULIB_TEST_CLOEXEC
+/* Return non-zero if FD is open and inheritable across exec/spawn.  */
+static int
+is_inheritable (int fd)
+{
+# if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD flags;
+  if (h == INVALID_HANDLE_VALUE || GetHandleInformation (h, &flags) == 0)
+    return 0;
+  return (flags & HANDLE_FLAG_INHERIT) != 0;
+# else
+#  ifndef F_GETFD
+#   error Please port fcntl to your platform
+#  endif
+  int i = fcntl (fd, F_GETFD);
+  return 0 <= i && (i & FD_CLOEXEC) == 0;
+# endif
+}
+#endif /* GNULIB_TEST_CLOEXEC */
+
+#if !O_BINARY
+# define set_binary_mode(f,m) zero ()
+static int zero (void) { return 0; }
+#endif
+
+/* Return non-zero if FD is open in the given MODE, which is either
+   O_TEXT or O_BINARY.  */
+static int
+is_mode (int fd, int mode)
+{
+  int value = set_binary_mode (fd, O_BINARY);
+  set_binary_mode (fd, value);
+  return mode == value;
+}
+
+int
+main (void)
+{
+  const char *file = "test-dup2.tmp";
+  char buffer[1];
+  int bad_fd = getdtablesize ();
+  int fd = open (file, O_CREAT | O_TRUNC | O_RDWR, 0600);
+
+  /* Assume std descriptors were provided by invoker.  */
+  ASSERT (STDERR_FILENO < fd);
+  ASSERT (is_open (fd));
+  /* Ignore any other fd's leaked into this process.  */
+  close (fd + 1);
+  close (fd + 2);
+  ASSERT (!is_open (fd + 1));
+  ASSERT (!is_open (fd + 2));
+
+  /* Assigning to self must be a no-op.  */
+  ASSERT (dup2 (fd, fd) == fd);
+  ASSERT (is_open (fd));
+
+  /* The source must be valid.  */
+  errno = 0;
+  ASSERT (dup2 (-1, fd) == -1);
+  ASSERT (errno == EBADF);
+  close (99);
+  errno = 0;
+  ASSERT (dup2 (99, fd) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (dup2 (AT_FDCWD, fd) == -1);
+  ASSERT (errno == EBADF);
+  ASSERT (is_open (fd));
+
+  /* If the source is not open, then the destination is unaffected.  */
+  errno = 0;
+  ASSERT (dup2 (fd + 1, fd + 1) == -1);
+  ASSERT (errno == EBADF);
+  ASSERT (!is_open (fd + 1));
+  errno = 0;
+  ASSERT (dup2 (fd + 1, fd) == -1);
+  ASSERT (errno == EBADF);
+  ASSERT (is_open (fd));
+
+  /* The destination must be valid.  */
+  errno = 0;
+  ASSERT (dup2 (fd, -2) == -1);
+  ASSERT (errno == EBADF);
+  if (bad_fd > 256)
+    {
+      ASSERT (dup2 (fd, 255) == 255);
+      ASSERT (dup2 (fd, 256) == 256);
+      ASSERT (close (255) == 0);
+      ASSERT (close (256) == 0);
+    }
+  ASSERT (dup2 (fd, bad_fd - 1) == bad_fd - 1);
+  ASSERT (close (bad_fd - 1) == 0);
+  errno = 0;
+  ASSERT (dup2 (fd, bad_fd) == -1);
+  ASSERT (errno == EBADF);
+
+  /* Using dup2 can skip fds.  */
+  ASSERT (dup2 (fd, fd + 2) == fd + 2);
+  ASSERT (is_open (fd));
+  ASSERT (!is_open (fd + 1));
+  ASSERT (is_open (fd + 2));
+
+  /* Verify that dup2 closes the previous occupant of a fd.  */
+  ASSERT (open ("/dev/null", O_WRONLY, 0600) == fd + 1);
+  ASSERT (dup2 (fd + 1, fd) == fd);
+  ASSERT (close (fd + 1) == 0);
+  ASSERT (write (fd, "1", 1) == 1);
+  ASSERT (dup2 (fd + 2, fd) == fd);
+  ASSERT (lseek (fd, 0, SEEK_END) == 0);
+  ASSERT (write (fd + 2, "2", 1) == 1);
+  ASSERT (lseek (fd, 0, SEEK_SET) == 0);
+  ASSERT (read (fd, buffer, 1) == 1);
+  ASSERT (*buffer == '2');
+
+#if GNULIB_TEST_CLOEXEC
+  /* Any new fd created by dup2 must not be cloexec.  */
+  ASSERT (close (fd + 2) == 0);
+  ASSERT (dup_cloexec (fd) == fd + 1);
+  ASSERT (!is_inheritable (fd + 1));
+  ASSERT (dup2 (fd + 1, fd + 1) == fd + 1);
+  ASSERT (!is_inheritable (fd + 1));
+  ASSERT (dup2 (fd + 1, fd + 2) == fd + 2);
+  ASSERT (!is_inheritable (fd + 1));
+  ASSERT (is_inheritable (fd + 2));
+  errno = 0;
+  ASSERT (dup2 (fd + 1, -1) == -1);
+  ASSERT (errno == EBADF);
+  ASSERT (!is_inheritable (fd + 1));
+#endif
+
+  /* On systems that distinguish between text and binary mode, dup2
+     reuses the mode of the source.  */
+  set_binary_mode (fd, O_BINARY);
+  ASSERT (is_mode (fd, O_BINARY));
+  ASSERT (dup2 (fd, fd + 1) == fd + 1);
+  ASSERT (is_mode (fd + 1, O_BINARY));
+  set_binary_mode (fd, O_TEXT);
+  ASSERT (is_mode (fd, O_TEXT));
+  ASSERT (dup2 (fd, fd + 1) == fd + 1);
+  ASSERT (is_mode (fd + 1, O_TEXT));
+
+  /* Clean up.  */
+  ASSERT (close (fd + 2) == 0);
+  ASSERT (close (fd + 1) == 0);
+  ASSERT (close (fd) == 0);
+  ASSERT (unlink (file) == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-dynarray.c b/src/grep/gnulib-tests/test-dynarray.c
new file mode 100644
index 0000000..c3f9a29
--- /dev/null
+++ b/src/grep/gnulib-tests/test-dynarray.c
@@ -0,0 +1,53 @@
+/* Test of type-safe arrays that grow dynamically.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2021.  */
+
+#include <config.h>
+
+#define DYNARRAY_STRUCT int_sequence
+#define DYNARRAY_ELEMENT int
+#define DYNARRAY_PREFIX intseq_
+#include "dynarray.h"
+
+#include "macros.h"
+
+#define N 100000
+
+static int
+value_at (long long int i)
+{
+  return (i % 13) + ((i * i) % 251);
+}
+
+int
+main ()
+{
+  struct int_sequence s;
+  int i;
+
+  intseq_init (&s);
+  for (i = 0; i < N; i++)
+    intseq_add (&s, value_at (i));
+  for (i = N - 1; i >= N / 2; i--)
+    {
+      ASSERT (* intseq_at (&s, i) == value_at (i));
+      intseq_remove_last (&s);
+    }
+  intseq_free (&s);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-environ.c b/src/grep/gnulib-tests/test-environ.c
new file mode 100644
index 0000000..2935e43
--- /dev/null
+++ b/src/grep/gnulib-tests/test-environ.c
@@ -0,0 +1,44 @@
+/* Test of environ variable.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include <string.h>
+
+int
+main ()
+{
+  /* The environment variables that are set even in the weirdest situations
+     are HOME and PATH.
+     POSIX says that HOME is initialized by the system, and that PATH may be
+     unset.  But in practice it's more frequent to see HOME unset and PATH
+     set.  So we test the presence of PATH.  */
+  char **remaining_variables = environ;
+  char *string;
+
+  for (; (string = *remaining_variables) != NULL; remaining_variables++)
+    {
+      if (strncmp (string, "PATH=", 5) == 0)
+        /* Found the PATH environment variable.  */
+        return 0;
+    }
+  /* Failed to find the PATH environment variable.  */
+  return 1;
+}
diff --git a/src/grep/gnulib-tests/test-errno.c b/src/grep/gnulib-tests/test-errno.c
new file mode 100644
index 0000000..59c5344
--- /dev/null
+++ b/src/grep/gnulib-tests/test-errno.c
@@ -0,0 +1,119 @@
+/* Test of <errno.h> substitute.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <errno.h>
+
+/* Verify that the POSIX mandated errno values exist and can be used as
+   initializers outside of a function.
+   The variable names happen to match the Linux/x86 error numbers.  */
+int e1 = EPERM;
+int e2 = ENOENT;
+int e3 = ESRCH;
+int e4 = EINTR;
+int e5 = EIO;
+int e6 = ENXIO;
+int e7 = E2BIG;
+int e8 = ENOEXEC;
+int e9 = EBADF;
+int e10 = ECHILD;
+int e11 = EAGAIN;
+int e11a = EWOULDBLOCK;
+int e12 = ENOMEM;
+int e13 = EACCES;
+int e14 = EFAULT;
+int e16 = EBUSY;
+int e17 = EEXIST;
+int e18 = EXDEV;
+int e19 = ENODEV;
+int e20 = ENOTDIR;
+int e21 = EISDIR;
+int e22 = EINVAL;
+int e23 = ENFILE;
+int e24 = EMFILE;
+int e25 = ENOTTY;
+int e26 = ETXTBSY;
+int e27 = EFBIG;
+int e28 = ENOSPC;
+int e29 = ESPIPE;
+int e30 = EROFS;
+int e31 = EMLINK;
+int e32 = EPIPE;
+int e33 = EDOM;
+int e34 = ERANGE;
+int e35 = EDEADLK;
+int e36 = ENAMETOOLONG;
+int e37 = ENOLCK;
+int e38 = ENOSYS;
+int e39 = ENOTEMPTY;
+int e40 = ELOOP;
+int e42 = ENOMSG;
+int e43 = EIDRM;
+int e67 = ENOLINK;
+int e71 = EPROTO;
+int e72 = EMULTIHOP;
+int e74 = EBADMSG;
+int e75 = EOVERFLOW;
+int e84 = EILSEQ;
+int e88 = ENOTSOCK;
+int e89 = EDESTADDRREQ;
+int e90 = EMSGSIZE;
+int e91 = EPROTOTYPE;
+int e92 = ENOPROTOOPT;
+int e93 = EPROTONOSUPPORT;
+int e95 = EOPNOTSUPP;
+int e95a = ENOTSUP;
+int e97 = EAFNOSUPPORT;
+int e98 = EADDRINUSE;
+int e99 = EADDRNOTAVAIL;
+int e100 = ENETDOWN;
+int e101 = ENETUNREACH;
+int e102 = ENETRESET;
+int e103 = ECONNABORTED;
+int e104 = ECONNRESET;
+int e105 = ENOBUFS;
+int e106 = EISCONN;
+int e107 = ENOTCONN;
+int e110 = ETIMEDOUT;
+int e111 = ECONNREFUSED;
+int e113 = EHOSTUNREACH;
+int e114 = EALREADY;
+int e115 = EINPROGRESS;
+int e116 = ESTALE;
+int e122 = EDQUOT;
+int e125 = ECANCELED;
+int e130 = EOWNERDEAD;
+int e131 = ENOTRECOVERABLE;
+
+/* Don't verify that these errno values are all different, except for possibly
+   EWOULDBLOCK == EAGAIN.  Even Linux/x86 does not pass this check: it has
+   ENOTSUP == EOPNOTSUPP.  */
+
+int
+main ()
+{
+  /* Verify that errno can be assigned.  */
+  errno = EOVERFLOW;
+
+  /* snprintf() callers want to distinguish EINVAL and EOVERFLOW.  */
+  if (errno == EINVAL)
+    return 1;
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-exclude.c b/src/grep/gnulib-tests/test-exclude.c
new file mode 100644
index 0000000..1f4baf3
--- /dev/null
+++ b/src/grep/gnulib-tests/test-exclude.c
@@ -0,0 +1,128 @@
+/* Test suite for exclude.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+   This file is part of the GNUlib Library.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <stdbool.h>
+#include <fnmatch.h>
+
+#include "exclude.h"
+#include "error.h"
+#include "argmatch.h"
+
+#ifndef FNM_CASEFOLD
+# define FNM_CASEFOLD 0
+#endif
+#ifndef FNM_LEADING_DIR
+# define FNM_LEADING_DIR 0
+#endif
+
+char const * const exclude_keywords[] = {
+  "noescape",
+  "pathname",
+  "period",
+  "leading_dir",
+  "casefold",
+  "anchored",
+  "include",
+  "wildcards",
+  NULL
+};
+
+int exclude_flags[] = {
+  FNM_NOESCAPE,
+  FNM_PATHNAME,
+  FNM_PERIOD,
+  FNM_LEADING_DIR,
+  FNM_CASEFOLD,
+  EXCLUDE_ANCHORED,
+  EXCLUDE_INCLUDE,
+  EXCLUDE_WILDCARDS
+};
+
+ARGMATCH_VERIFY (exclude_keywords, exclude_flags);
+
+/* Some packages define ARGMATCH_DIE and ARGMATCH_DIE_DECL in <config.h>, and
+   thus must link with a definition of that function.  Provide it here.  */
+#ifdef ARGMATCH_DIE_DECL
+
+_Noreturn ARGMATCH_DIE_DECL;
+ARGMATCH_DIE_DECL { exit (1); }
+
+#endif
+
+int
+main (int argc, char **argv)
+{
+  int exclude_options = 0;
+  struct exclude *exclude = new_exclude ();
+
+  if (argc == 1)
+    error (1, 0, "usage: %s file -- words...", argv[0]);
+
+  while (--argc)
+    {
+      char *opt = *++argv;
+      if (opt[0] == '-')
+        {
+          int neg = 0;
+          int flag;
+          char *s = opt + 1;
+
+          if (opt[1] == '-' && opt[2] == 0)
+            {
+              argc--;
+              break;
+            }
+          if (strlen (s) > 3 && memcmp (s, "no-", 3) == 0)
+            {
+              neg = 1;
+              s += 3;
+            }
+          flag = XARGMATCH (opt, s, exclude_keywords, exclude_flags);
+          if (neg)
+            exclude_options &= ~flag;
+          else
+            exclude_options |= flag;
+
+          /* Skip this test if invoked with -leading-dir on a system that
+             lacks support for FNM_LEADING_DIR. */
+          if (strcmp (s, "leading_dir") == 0 && FNM_LEADING_DIR == 0)
+            exit (77);
+
+          /* Likewise for -casefold and FNM_CASEFOLD.  */
+          if (strcmp (s, "casefold") == 0 && FNM_CASEFOLD == 0)
+            exit (77);
+        }
+      else if (add_exclude_file (add_exclude, exclude, opt,
+                                 exclude_options, '\n') != 0)
+        error (1, errno, "error loading %s", opt);
+    }
+
+  for (; argc; --argc)
+    {
+      char *word = *++argv;
+
+      printf ("%s: %d\n", word, excluded_file_name (exclude, word));
+    }
+
+  free_exclude (exclude);
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-exclude1.sh b/src/grep/gnulib-tests/test-exclude1.sh
new file mode 100755
index 0000000..613994c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-exclude1.sh
@@ -0,0 +1,50 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test literal matches
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+cat > expected <<EOT
+foo: 0
+foo*: 1
+bar: 1
+foobar: 0
+baz: 0
+bar/qux: 0
+EOT
+
+${CHECKER} test-exclude in -- foo 'foo*' bar foobar baz bar/qux > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-exclude2.sh b/src/grep/gnulib-tests/test-exclude2.sh
new file mode 100755
index 0000000..a0d078d
--- /dev/null
+++ b/src/grep/gnulib-tests/test-exclude2.sh
@@ -0,0 +1,50 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+# Test case-insensitive literal matches
+
+cat > expected <<EOT
+foo: 0
+foo*: 1
+bar: 1
+foobar: 0
+baz: 1
+bar/qux: 0
+EOT
+
+${CHECKER} test-exclude -casefold in -- foo 'foo*' bar foobar baz bar/qux > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-exclude3.sh b/src/grep/gnulib-tests/test-exclude3.sh
new file mode 100755
index 0000000..3c6c9a9
--- /dev/null
+++ b/src/grep/gnulib-tests/test-exclude3.sh
@@ -0,0 +1,50 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test include
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+cat > expected <<EOT
+foo: 1
+foo*: 0
+bar: 0
+foobar: 1
+baz: 1
+bar/qux: 1
+EOT
+
+${CHECKER} test-exclude -include in -- foo 'foo*' bar foobar baz bar/qux > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-exclude4.sh b/src/grep/gnulib-tests/test-exclude4.sh
new file mode 100755
index 0000000..8fa1405
--- /dev/null
+++ b/src/grep/gnulib-tests/test-exclude4.sh
@@ -0,0 +1,45 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test wildcard matching
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+cat > expected <<EOT
+foobar: 1
+EOT
+
+${CHECKER} test-exclude -wildcards in -- foobar > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-exclude5.sh b/src/grep/gnulib-tests/test-exclude5.sh
new file mode 100755
index 0000000..86dfc49
--- /dev/null
+++ b/src/grep/gnulib-tests/test-exclude5.sh
@@ -0,0 +1,48 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test FNM_LEADING_DIR
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+cat > expected <<EOT
+bar: 1
+bar/qux: 1
+barz: 0
+foo/bar: 1
+EOT
+
+${CHECKER} test-exclude -leading_dir in -- bar bar/qux barz foo/bar > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-exclude6.sh b/src/grep/gnulib-tests/test-exclude6.sh
new file mode 100755
index 0000000..87dfe3a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-exclude6.sh
@@ -0,0 +1,46 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test anchored
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+cat > expected <<EOT
+bar: 1
+foo/bar: 0
+EOT
+
+${CHECKER} test-exclude -anchored in -- bar foo/bar > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-exclude7.sh b/src/grep/gnulib-tests/test-exclude7.sh
new file mode 100755
index 0000000..ed09185
--- /dev/null
+++ b/src/grep/gnulib-tests/test-exclude7.sh
@@ -0,0 +1,47 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test exclude precedence
+
+cat > in <<EOT
+foo*
+bar
+Baz
+EOT
+
+cat > expected <<EOT
+bar: 0
+bar: 1
+EOT
+
+${CHECKER} test-exclude in -include in -- bar > out || exit $?
+${CHECKER} test-exclude -include in -no-include in -- bar >> out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-exclude8.sh b/src/grep/gnulib-tests/test-exclude8.sh
new file mode 100755
index 0000000..e4f6791
--- /dev/null
+++ b/src/grep/gnulib-tests/test-exclude8.sh
@@ -0,0 +1,46 @@
+#! /bin/sh
+# Test suite for exclude.
+# Copyright (C) 2010-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+fail=0
+
+# Test escaped metacharacters.
+
+cat > in <<'EOT'
+f\*e
+b[a\*]r
+EOT
+
+cat > expected <<'EOT'
+f*e: 1
+file: 0
+bar: 1
+EOT
+
+${CHECKER} test-exclude -wildcards in -- 'f*e' 'file' 'bar' > out || exit $?
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+case $(echo r | tr -d '\r') in '') cr='\015';; *) cr='\r';; esac
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k && mv k out
+
+compare expected out || fail=1
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-fchdir.c b/src/grep/gnulib-tests/test-fchdir.c
new file mode 100644
index 0000000..8ee4508
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fchdir.c
@@ -0,0 +1,110 @@
+/* Test changing to a directory named by a file descriptor.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fchdir, int, (int));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "cloexec.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  char *cwd;
+  int fd;
+  int i;
+
+  cwd = getcwd (NULL, 0);
+  ASSERT (cwd);
+
+  fd = open (".", O_RDONLY);
+  ASSERT (0 <= fd);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (fchdir (-1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (fchdir (99) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Check for other failure cases.  */
+  {
+    int bad_fd = open ("/dev/null", O_RDONLY);
+    ASSERT (0 <= bad_fd);
+    errno = 0;
+    ASSERT (fchdir (bad_fd) == -1);
+    ASSERT (errno == ENOTDIR);
+    ASSERT (close (bad_fd) == 0);
+  }
+
+  /* Repeat test twice, once in '.' and once in '..'.  */
+  for (i = 0; i < 2; i++)
+    {
+      ASSERT (chdir (&".."[1 - i]) == 0);
+      ASSERT (fchdir (fd) == 0);
+      {
+        size_t len = strlen (cwd) + 1;
+        char *new_dir = malloc (len);
+        ASSERT (new_dir);
+        ASSERT (getcwd (new_dir, len) == new_dir);
+        ASSERT (strcmp (cwd, new_dir) == 0);
+        free (new_dir);
+      }
+
+      /* For second iteration, use a cloned fd, to ensure that dup
+         remembers whether an fd was associated with a directory.  */
+      if (!i)
+        {
+          int new_fd = dup (fd);
+          ASSERT (0 <= new_fd);
+          ASSERT (close (fd) == 0);
+          ASSERT (dup2 (new_fd, fd) == fd);
+          ASSERT (close (new_fd) == 0);
+          ASSERT (dup_cloexec (fd) == new_fd);
+          ASSERT (dup2 (new_fd, fd) == fd);
+          ASSERT (close (new_fd) == 0);
+          ASSERT (fcntl (fd, F_DUPFD_CLOEXEC, new_fd) == new_fd);
+          ASSERT (close (fd) == 0);
+          ASSERT (fcntl (new_fd, F_DUPFD, fd) == fd);
+          ASSERT (close (new_fd) == 0);
+#if GNULIB_TEST_DUP3
+          ASSERT (dup3 (fd, new_fd, 0) == new_fd);
+          ASSERT (dup3 (new_fd, fd, 0) == fd);
+          ASSERT (close (new_fd) == 0);
+#endif
+        }
+    }
+
+  free (cwd);
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-fcntl-h.c b/src/grep/gnulib-tests/test-fcntl-h.c
new file mode 100644
index 0000000..ab25cf7
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fcntl-h.c
@@ -0,0 +1,130 @@
+/* Test of <fcntl.h> substitute.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <fcntl.h>
+
+/* Check that the various O_* macros are defined.  */
+int o = (O_DIRECT | O_DIRECTORY | O_DSYNC | O_IGNORE_CTTY | O_NDELAY | O_NOATIME
+         | O_NONBLOCK | O_NOCTTY | O_NOFOLLOW | O_NOLINK | O_NOLINKS | O_NOTRANS
+         | O_RSYNC | O_SYNC | O_TTY_INIT | O_BINARY | O_TEXT);
+
+/* Check that the various SEEK_* macros are defined.  */
+int sk[] = { SEEK_CUR, SEEK_END, SEEK_SET };
+
+/* Check that the FD_* macros are defined.  */
+int i = FD_CLOEXEC;
+
+/* Check that the types are all defined.  */
+pid_t t1;
+off_t t2;
+mode_t t3;
+
+int
+main (void)
+{
+  /* Ensure no overlap in SEEK_*. */
+  switch (0)
+    {
+    case SEEK_CUR:
+    case SEEK_END:
+    case SEEK_SET:
+      ;
+    }
+
+  /* Ensure no dangerous overlap in non-zero gnulib-defined replacements.  */
+  switch (O_RDONLY)
+    {
+      /* Access modes */
+    case O_RDONLY:
+    case O_WRONLY:
+    case O_RDWR:
+#if O_EXEC && O_EXEC != O_RDONLY
+    case O_EXEC:
+#endif
+#if O_SEARCH && O_EXEC != O_SEARCH && O_SEARCH != O_RDONLY
+    case O_SEARCH:
+#endif
+      i = ! (~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH));
+      break;
+
+      /* Everyone should have these */
+    case O_CREAT:
+    case O_EXCL:
+    case O_TRUNC:
+    case O_APPEND:
+      break;
+
+      /* These might be 0 or O_RDONLY, only test non-zero versions.  */
+#if O_CLOEXEC
+    case O_CLOEXEC:
+#endif
+#if O_DIRECT
+    case O_DIRECT:
+#endif
+#if O_DIRECTORY
+    case O_DIRECTORY:
+#endif
+#if O_DSYNC
+    case O_DSYNC:
+#endif
+#if O_IGNORE_CTTY
+    case O_IGNORE_CTTY:
+#endif
+#if O_NOATIME
+    case O_NOATIME:
+#endif
+#if O_NONBLOCK
+    case O_NONBLOCK:
+#endif
+#if O_NOCTTY
+    case O_NOCTTY:
+#endif
+#if O_NOFOLLOW
+    case O_NOFOLLOW:
+#endif
+#if O_NOLINK
+    case O_NOLINK:
+#endif
+#if O_NOLINKS
+    case O_NOLINKS:
+#endif
+#if O_NOTRANS
+    case O_NOTRANS:
+#endif
+#if O_RSYNC && O_RSYNC != O_DSYNC
+    case O_RSYNC:
+#endif
+#if O_SYNC && O_SYNC != O_DSYNC && O_SYNC != O_RSYNC
+    case O_SYNC:
+#endif
+#if O_TTY_INIT
+    case O_TTY_INIT:
+#endif
+#if O_BINARY
+    case O_BINARY:
+#endif
+#if O_TEXT
+    case O_TEXT:
+#endif
+      ;
+    }
+
+  return !i;
+}
diff --git a/src/grep/gnulib-tests/test-fcntl-safer.c b/src/grep/gnulib-tests/test-fcntl-safer.c
new file mode 100644
index 0000000..e6b2379
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fcntl-safer.c
@@ -0,0 +1,38 @@
+/* Test of opening a file descriptor.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "fcntl--.h"
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define BASE "test-fcntl-safer.t"
+
+#include "test-open.h"
+
+int
+main (void)
+{
+  return test_open (open, true);
+}
diff --git a/src/grep/gnulib-tests/test-fcntl.c b/src/grep/gnulib-tests/test-fcntl.c
new file mode 100644
index 0000000..cb834b4
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fcntl.c
@@ -0,0 +1,435 @@
+/* Test of fcntl(2).
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <fcntl.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fcntl, int, (int, int, ...));
+
+/* Helpers.  */
+#include <errno.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <unistd.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#endif
+
+#include "binary-io.h"
+#include "macros.h"
+
+#if !O_BINARY
+# define set_binary_mode(f,m) zero ()
+static int zero (void) { return 0; }
+#endif
+
+/* Return true if FD is open.  */
+static bool
+is_open (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
+#else
+# ifndef F_GETFL
+#  error Please port fcntl to your platform
+# endif
+  return 0 <= fcntl (fd, F_GETFL);
+#endif
+}
+
+/* Return true if FD is open and inheritable across exec/spawn.  */
+static bool
+is_inheritable (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD flags;
+  if (h == INVALID_HANDLE_VALUE || GetHandleInformation (h, &flags) == 0)
+    return false;
+  return (flags & HANDLE_FLAG_INHERIT) != 0;
+#else
+# ifndef F_GETFD
+#  error Please port fcntl to your platform
+# endif
+  int i = fcntl (fd, F_GETFD);
+  return 0 <= i && (i & FD_CLOEXEC) == 0;
+#endif
+}
+
+/* Return non-zero if FD is open in the given MODE, which is either
+   O_TEXT or O_BINARY.  */
+static bool
+is_mode (int fd, int mode)
+{
+  int value = set_binary_mode (fd, O_BINARY);
+  set_binary_mode (fd, value);
+  return mode == value;
+}
+
+/* Since native fcntl can have more supported operations than our
+   replacement is aware of, and since various operations assign
+   different types to the vararg argument, a wrapper around fcntl must
+   be able to pass a vararg of unknown type on through to the original
+   fcntl.  Make sure that this works properly: func1 behaves like the
+   original fcntl interpreting the vararg as an int or a pointer to a
+   struct, and func2 behaves like rpl_fcntl that doesn't know what
+   type to forward.  */
+struct dummy_struct
+{
+  long filler;
+  int value;
+};
+static int
+func1 (int a, ...)
+{
+  va_list arg;
+  int i;
+  va_start (arg, a);
+  if (a < 4)
+    i = va_arg (arg, int);
+  else
+    {
+      struct dummy_struct *s = va_arg (arg, struct dummy_struct *);
+      i = s->value;
+    }
+  va_end (arg);
+  return i;
+}
+static int
+func2 (int a, ...)
+{
+  va_list arg;
+  void *p;
+  va_start (arg, a);
+  p = va_arg (arg, void *);
+  va_end (arg);
+  return func1 (a, p);
+}
+
+/* Ensure that all supported fcntl actions are distinct, and
+   usable in preprocessor expressions.  */
+static void
+check_flags (void)
+{
+  switch (0)
+    {
+    case F_DUPFD:
+#if F_DUPFD
+#endif
+
+    case F_DUPFD_CLOEXEC:
+#if F_DUPFD_CLOEXEC
+#endif
+
+    case F_GETFD:
+#if F_GETFD
+#endif
+
+#ifdef F_SETFD
+    case F_SETFD:
+# if F_SETFD
+# endif
+#endif
+
+#ifdef F_GETFL
+    case F_GETFL:
+# if F_GETFL
+# endif
+#endif
+
+#ifdef F_SETFL
+    case F_SETFL:
+# if F_SETFL
+# endif
+#endif
+
+#ifdef F_GETOWN
+    case F_GETOWN:
+# if F_GETOWN
+# endif
+#endif
+
+#ifdef F_SETOWN
+    case F_SETOWN:
+# if F_SETOWN
+# endif
+#endif
+
+#ifdef F_GETLK
+    case F_GETLK:
+# if F_GETLK
+# endif
+#endif
+
+#ifdef F_SETLK
+    case F_SETLK:
+# if F_SETLK
+# endif
+#endif
+
+#ifdef F_SETLKW
+    case F_SETLKW:
+# if F_SETLKW
+# endif
+#endif
+
+    default:
+      ;
+    }
+}
+
+int
+main (int argc, char *argv[])
+{
+  if (argc > 1)
+    /* child process */
+    return (is_open (10) ? 42 : 0);
+
+  const char *file = "test-fcntl.tmp";
+  int fd;
+  int bad_fd = getdtablesize ();
+
+  /* Sanity check that rpl_fcntl is likely to work.  */
+  ASSERT (func2 (1, 2) == 2);
+  ASSERT (func2 (2, -2) == -2);
+  ASSERT (func2 (3, 0x80000000) == 0x80000000);
+  {
+    struct dummy_struct s = { 0L, 4 };
+    ASSERT (func2 (4, &s) == 4);
+  }
+  check_flags ();
+
+  /* Assume std descriptors were provided by invoker, and ignore fds
+     that might have been inherited.  */
+  fd = creat (file, 0600);
+  ASSERT (STDERR_FILENO < fd);
+  close (fd + 1);
+  close (fd + 2);
+
+  /* For F_DUPFD*, the source must be valid.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_DUPFD, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_DUPFD, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_DUPFD, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (-1, F_DUPFD_CLOEXEC, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_DUPFD_CLOEXEC, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_DUPFD_CLOEXEC, 0) == -1);
+  ASSERT (errno == EBADF);
+
+  /* For F_DUPFD*, the destination must be valid.  */
+  errno = 0;
+  ASSERT (fcntl (fd, F_DUPFD, -1) == -1);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (fcntl (fd, F_DUPFD, bad_fd) == -1);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (fcntl (fd, F_DUPFD_CLOEXEC, -1) == -1);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (fcntl (fd, F_DUPFD_CLOEXEC, bad_fd) == -1);
+  ASSERT (errno == EINVAL
+          || errno == EMFILE /* WSL */);
+
+  /* For F_DUPFD*, check for correct inheritance, as well as
+     preservation of text vs. binary.  */
+  set_binary_mode (fd, O_BINARY);
+  ASSERT (is_open (fd));
+  ASSERT (!is_open (fd + 1));
+  ASSERT (!is_open (fd + 2));
+  ASSERT (is_inheritable (fd));
+  ASSERT (is_mode (fd, O_BINARY));
+
+  ASSERT (fcntl (fd, F_DUPFD, fd) == fd + 1);
+  ASSERT (is_open (fd));
+  ASSERT (is_open (fd + 1));
+  ASSERT (!is_open (fd + 2));
+  ASSERT (is_inheritable (fd + 1));
+  ASSERT (is_mode (fd, O_BINARY));
+  ASSERT (is_mode (fd + 1, O_BINARY));
+  ASSERT (close (fd + 1) == 0);
+
+  ASSERT (fcntl (fd, F_DUPFD_CLOEXEC, fd + 2) == fd + 2);
+  ASSERT (is_open (fd));
+  ASSERT (!is_open (fd + 1));
+  ASSERT (is_open (fd + 2));
+  ASSERT (is_inheritable (fd));
+  ASSERT (!is_inheritable (fd + 2));
+  ASSERT (is_mode (fd, O_BINARY));
+  ASSERT (is_mode (fd + 2, O_BINARY));
+  ASSERT (close (fd) == 0);
+
+  set_binary_mode (fd + 2, O_TEXT);
+  ASSERT (fcntl (fd + 2, F_DUPFD, fd + 1) == fd + 1);
+  ASSERT (!is_open (fd));
+  ASSERT (is_open (fd + 1));
+  ASSERT (is_open (fd + 2));
+  ASSERT (is_inheritable (fd + 1));
+  ASSERT (!is_inheritable (fd + 2));
+  ASSERT (is_mode (fd + 1, O_TEXT));
+  ASSERT (is_mode (fd + 2, O_TEXT));
+  ASSERT (close (fd + 1) == 0);
+
+  ASSERT (fcntl (fd + 2, F_DUPFD_CLOEXEC, 0) == fd);
+  ASSERT (is_open (fd));
+  ASSERT (!is_open (fd + 1));
+  ASSERT (is_open (fd + 2));
+  ASSERT (!is_inheritable (fd));
+  ASSERT (!is_inheritable (fd + 2));
+  ASSERT (is_mode (fd, O_TEXT));
+  ASSERT (is_mode (fd + 2, O_TEXT));
+  ASSERT (close (fd + 2) == 0);
+
+  /* Test F_GETFD on invalid file descriptors.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_GETFD) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_GETFD) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_GETFD) == -1);
+  ASSERT (errno == EBADF);
+
+  /* Test F_GETFD, the FD_CLOEXEC bit.  */
+  {
+    int result = fcntl (fd, F_GETFD);
+    ASSERT (0 <= result);
+    ASSERT ((result & FD_CLOEXEC) == FD_CLOEXEC);
+    ASSERT (dup (fd) == fd + 1);
+    result = fcntl (fd + 1, F_GETFD);
+    ASSERT (0 <= result);
+    ASSERT ((result & FD_CLOEXEC) == 0);
+    ASSERT (close (fd + 1) == 0);
+  }
+
+#ifdef F_SETFD
+  /* Test F_SETFD on invalid file descriptors.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_SETFD, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_SETFD, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_SETFD, 0) == -1);
+  ASSERT (errno == EBADF);
+#endif
+
+#ifdef F_GETFL
+  /* Test F_GETFL on invalid file descriptors.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_GETFL) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_GETFL) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_GETFL) == -1);
+  ASSERT (errno == EBADF);
+#endif
+
+#ifdef F_SETFL
+  /* Test F_SETFL on invalid file descriptors.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_SETFL, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_SETFL, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_SETFL, 0) == -1);
+  ASSERT (errno == EBADF);
+#endif
+
+#ifdef F_GETOWN
+  /* Test F_GETOWN on invalid file descriptors.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_GETOWN) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_GETOWN) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_GETOWN) == -1);
+  ASSERT (errno == EBADF);
+#endif
+
+#ifdef F_SETOWN
+  /* Test F_SETFL on invalid file descriptors.  */
+  errno = 0;
+  ASSERT (fcntl (-1, F_SETOWN, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (fd + 1, F_SETOWN, 0) == -1);
+  ASSERT (errno == EBADF);
+  errno = 0;
+  ASSERT (fcntl (bad_fd, F_SETOWN, 0) == -1);
+  ASSERT (errno == EBADF);
+#endif
+
+  /* Cleanup.  */
+  ASSERT (close (fd) == 0);
+  ASSERT (unlink (file) == 0);
+
+  /* Close file descriptors that may have been inherited from the parent
+     process and that would cause failures below.
+     Such file descriptors have been seen:
+       - with GNU make, when invoked as 'make -j N' with j > 1,
+       - in some versions of the KDE desktop environment,
+       - on NetBSD,
+       - in MacPorts with the "trace mode" enabled.
+   */
+  (void) close (10);
+
+  /* Test whether F_DUPFD_CLOEXEC is effective.  */
+  ASSERT (fcntl (1, F_DUPFD_CLOEXEC, 10) >= 0);
+#if defined _WIN32 && !defined __CYGWIN__
+  return _execl ("./test-fcntl", "./test-fcntl", "child", NULL);
+#else
+  return execl ("./test-fcntl", "./test-fcntl", "child", NULL);
+#endif
+}
diff --git a/src/grep/gnulib-tests/test-fdopen.c b/src/grep/gnulib-tests/test-fdopen.c
new file mode 100644
index 0000000..86793bc
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fdopen.c
@@ -0,0 +1,49 @@
+/* Test opening a stream with a file descriptor.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fdopen, FILE *, (int, const char *));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Test behavior on failure.  POSIX makes it hard to check for
+     failure, since the behavior is not well-defined on invalid file
+     descriptors, so try fdopen 1000 times and if that's not enough to
+     fail due to EMFILE, so be it.  */
+
+  int i;
+  for (i = 0; i < 1000; i++)
+    {
+      errno = 0;
+      if (! fdopen (STDOUT_FILENO, "w"))
+        {
+          ASSERT (errno != 0);
+          break;
+        }
+    }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-fdopendir.c b/src/grep/gnulib-tests/test-fdopendir.c
new file mode 100644
index 0000000..7d53b8a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fdopendir.c
@@ -0,0 +1,80 @@
+/* Test opening a directory stream from a file descriptor.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <dirent.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fdopendir, DIR *, (int));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  DIR *d;
+  int fd;
+
+  /* A non-directory cannot be turned into a directory stream.  */
+  fd = open ("test-fdopendir.tmp", O_RDONLY | O_CREAT, 0600);
+  ASSERT (0 <= fd);
+  errno = 0;
+  ASSERT (fdopendir (fd) == NULL);
+  ASSERT (errno == ENOTDIR);
+  ASSERT (close (fd) == 0);
+  ASSERT (unlink ("test-fdopendir.tmp") == 0);
+
+  /* A bad fd cannot be turned into a stream.  */
+  {
+    errno = 0;
+    ASSERT (fdopendir (-1) == NULL);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (fdopendir (99) == NULL);
+    ASSERT (errno == EBADF);
+  }
+
+  /* This should work.  */
+  fd = open (".", O_RDONLY);
+  ASSERT (0 <= fd);
+  d = fdopendir (fd);
+  ASSERT (d);
+  /* fdopendir should not close fd.  */
+  ASSERT (dup2 (fd, fd) == fd);
+
+  /* Don't test dirfd here.  dirfd (d) must return fd on current POSIX
+     platforms, but on pre-2008 platforms or on non-POSIX platforms
+     dirfd (fd) might return some other descriptor, or -1, and gnulib
+     does not work around this porting problem.  */
+
+  ASSERT (closedir (d) == 0);
+  /* Now we can guarantee that fd must be closed.  */
+  errno = 0;
+  ASSERT (dup2 (fd, fd) == -1);
+  ASSERT (errno == EBADF);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-fgetc.c b/src/grep/gnulib-tests/test-fgetc.c
new file mode 100644
index 0000000..6faae5c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fgetc.c
@@ -0,0 +1,99 @@
+/* Test of fgetc() function.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fgetc, int, (FILE *));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  const char *filename = "test-fgetc.txt";
+
+  /* We don't have an fgetc() function that installs an invalid parameter
+     handler so far.  So install that handler here, explicitly.  */
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
+    && MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
+  gl_msvc_inval_ensure_handler ();
+#endif
+
+  /* Prepare a file.  */
+  {
+    const char text[] = "hello world";
+    int fd = open (filename, O_RDWR | O_CREAT | O_TRUNC, 0600);
+    ASSERT (fd >= 0);
+    ASSERT (write (fd, text, sizeof (text)) == sizeof (text));
+    ASSERT (close (fd) == 0);
+  }
+
+  /* Test that fgetc() sets errno if someone else closes the stream
+     fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen (filename, "r");
+    ASSERT (fp != NULL);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (fgetc (fp) == EOF);
+    ASSERT (errno == EBADF);
+    ASSERT (ferror (fp));
+    fclose (fp);
+  }
+
+  /* Test that fgetc() sets errno if the stream was constructed with
+     an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "r");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (fgetc (fp) == EOF);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "r");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (fgetc (fp) == EOF);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+
+  /* Clean up.  */
+  unlink (filename);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-float.c b/src/grep/gnulib-tests/test-float.c
new file mode 100644
index 0000000..f79e819
--- /dev/null
+++ b/src/grep/gnulib-tests/test-float.c
@@ -0,0 +1,384 @@
+/* Test of <float.h> substitute.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include <float.h>
+
+#include "fpucw.h"
+#include "macros.h"
+
+/* Check that FLT_RADIX is a constant expression.  */
+int a[] = { FLT_RADIX };
+
+#if FLT_RADIX == 2
+
+/* Return 2^n.  */
+static float
+pow2f (int n)
+{
+  int k = n;
+  volatile float x = 1;
+  volatile float y = 2;
+  /* Invariant: 2^n == x * y^k.  */
+  if (k < 0)
+    {
+      y = 0.5f;
+      k = - k;
+    }
+  while (k > 0)
+    {
+      if (k != 2 * (k / 2))
+        {
+          x = x * y;
+          k = k - 1;
+        }
+      if (k == 0)
+        break;
+      y = y * y;
+      k = k / 2;
+    }
+  /* Now k == 0, hence x == 2^n.  */
+  return x;
+}
+
+/* Return 2^n.  */
+static double
+pow2d (int n)
+{
+  int k = n;
+  volatile double x = 1;
+  volatile double y = 2;
+  /* Invariant: 2^n == x * y^k.  */
+  if (k < 0)
+    {
+      y = 0.5;
+      k = - k;
+    }
+  while (k > 0)
+    {
+      if (k != 2 * (k / 2))
+        {
+          x = x * y;
+          k = k - 1;
+        }
+      if (k == 0)
+        break;
+      y = y * y;
+      k = k / 2;
+    }
+  /* Now k == 0, hence x == 2^n.  */
+  return x;
+}
+
+/* Return 2^n.  */
+static long double
+pow2l (int n)
+{
+  int k = n;
+  volatile long double x = 1;
+  volatile long double y = 2;
+  /* Invariant: 2^n == x * y^k.  */
+  if (k < 0)
+    {
+      y = 0.5L;
+      k = - k;
+    }
+  while (k > 0)
+    {
+      if (k != 2 * (k / 2))
+        {
+          x = x * y;
+          k = k - 1;
+        }
+      if (k == 0)
+        break;
+      y = y * y;
+      k = k / 2;
+    }
+  /* Now k == 0, hence x == 2^n.  */
+  return x;
+}
+
+/* ----------------------- Check macros for 'float' ----------------------- */
+
+/* Check that the FLT_* macros expand to constant expressions.  */
+int fb[] =
+  {
+    FLT_MANT_DIG, FLT_MIN_EXP, FLT_MAX_EXP,
+    FLT_DIG, FLT_MIN_10_EXP, FLT_MAX_10_EXP
+  };
+float fc[] = { FLT_EPSILON, FLT_MIN, FLT_MAX };
+
+static void
+test_float (void)
+{
+  /* Check that the value of FLT_MIN_EXP is well parenthesized.  */
+  ASSERT ((FLT_MIN_EXP % 101111) == (FLT_MIN_EXP) % 101111);
+
+  /* Check that the value of DBL_MIN_10_EXP is well parenthesized.  */
+  ASSERT ((FLT_MIN_10_EXP % 101111) == (FLT_MIN_10_EXP) % 101111);
+
+  /* Check that 'float' is as specified in IEEE 754.  */
+  ASSERT (FLT_MANT_DIG == 24);
+  ASSERT (FLT_MIN_EXP == -125);
+  ASSERT (FLT_MAX_EXP == 128);
+
+  /* Check the value of FLT_MIN_10_EXP.  */
+  ASSERT (FLT_MIN_10_EXP == - (int) (- (FLT_MIN_EXP - 1) * 0.30103));
+
+  /* Check the value of FLT_DIG.  */
+  ASSERT (FLT_DIG == (int) ((FLT_MANT_DIG - 1) * 0.30103));
+
+  /* Check the value of FLT_MIN_10_EXP.  */
+  ASSERT (FLT_MIN_10_EXP == - (int) (- (FLT_MIN_EXP - 1) * 0.30103));
+
+  /* Check the value of FLT_MAX_10_EXP.  */
+  ASSERT (FLT_MAX_10_EXP == (int) (FLT_MAX_EXP * 0.30103));
+
+  /* Check the value of FLT_MAX.  */
+  {
+    volatile float m = FLT_MAX;
+    int n;
+
+    ASSERT (m + m > m);
+    for (n = 0; n <= 2 * FLT_MANT_DIG; n++)
+      {
+        volatile float pow2_n = pow2f (n); /* 2^n */
+        volatile float x = m + (m / pow2_n);
+        if (x > m)
+          ASSERT (x + x == x);
+        else
+          ASSERT (!(x + x == x));
+      }
+  }
+
+  /* Check the value of FLT_MIN.  */
+  {
+    volatile float m = FLT_MIN;
+    volatile float x = pow2f (FLT_MIN_EXP - 1);
+    ASSERT (m == x);
+  }
+
+  /* Check the value of FLT_EPSILON.  */
+  {
+    volatile float e = FLT_EPSILON;
+    volatile float me;
+    int n;
+
+    me = 1.0f + e;
+    ASSERT (me > 1.0f);
+    ASSERT (me - 1.0f == e);
+    for (n = 0; n <= 2 * FLT_MANT_DIG; n++)
+      {
+        volatile float half_n = pow2f (- n); /* 2^-n */
+        volatile float x = me - half_n;
+        if (x < me)
+          ASSERT (x <= 1.0f);
+      }
+  }
+}
+
+/* ----------------------- Check macros for 'double' ----------------------- */
+
+/* Check that the DBL_* macros expand to constant expressions.  */
+int db[] =
+  {
+    DBL_MANT_DIG, DBL_MIN_EXP, DBL_MAX_EXP,
+    DBL_DIG, DBL_MIN_10_EXP, DBL_MAX_10_EXP
+  };
+double dc[] = { DBL_EPSILON, DBL_MIN, DBL_MAX };
+
+static void
+test_double (void)
+{
+  /* Check that the value of DBL_MIN_EXP is well parenthesized.  */
+  ASSERT ((DBL_MIN_EXP % 101111) == (DBL_MIN_EXP) % 101111);
+
+  /* Check that the value of DBL_MIN_10_EXP is well parenthesized.  */
+  ASSERT ((DBL_MIN_10_EXP % 101111) == (DBL_MIN_10_EXP) % 101111);
+
+  /* Check that 'double' is as specified in IEEE 754.  */
+  ASSERT (DBL_MANT_DIG == 53);
+  ASSERT (DBL_MIN_EXP == -1021);
+  ASSERT (DBL_MAX_EXP == 1024);
+
+  /* Check the value of DBL_MIN_10_EXP.  */
+  ASSERT (DBL_MIN_10_EXP == - (int) (- (DBL_MIN_EXP - 1) * 0.30103));
+
+  /* Check the value of DBL_DIG.  */
+  ASSERT (DBL_DIG == (int) ((DBL_MANT_DIG - 1) * 0.30103));
+
+  /* Check the value of DBL_MIN_10_EXP.  */
+  ASSERT (DBL_MIN_10_EXP == - (int) (- (DBL_MIN_EXP - 1) * 0.30103));
+
+  /* Check the value of DBL_MAX_10_EXP.  */
+  ASSERT (DBL_MAX_10_EXP == (int) (DBL_MAX_EXP * 0.30103));
+
+  /* Check the value of DBL_MAX.  */
+  {
+    volatile double m = DBL_MAX;
+    int n;
+
+    ASSERT (m + m > m);
+    for (n = 0; n <= 2 * DBL_MANT_DIG; n++)
+      {
+        volatile double pow2_n = pow2d (n); /* 2^n */
+        volatile double x = m + (m / pow2_n);
+        if (x > m)
+          ASSERT (x + x == x);
+        else
+          ASSERT (!(x + x == x));
+      }
+  }
+
+  /* Check the value of DBL_MIN.  */
+  {
+    volatile double m = DBL_MIN;
+    volatile double x = pow2d (DBL_MIN_EXP - 1);
+    ASSERT (m == x);
+  }
+
+  /* Check the value of DBL_EPSILON.  */
+  {
+    volatile double e = DBL_EPSILON;
+    volatile double me;
+    int n;
+
+    me = 1.0 + e;
+    ASSERT (me > 1.0);
+    ASSERT (me - 1.0 == e);
+    for (n = 0; n <= 2 * DBL_MANT_DIG; n++)
+      {
+        volatile double half_n = pow2d (- n); /* 2^-n */
+        volatile double x = me - half_n;
+        if (x < me)
+          ASSERT (x <= 1.0);
+      }
+  }
+}
+
+/* -------------------- Check macros for 'long double' -------------------- */
+
+/* Check that the LDBL_* macros expand to constant expressions.  */
+int lb[] =
+  {
+    LDBL_MANT_DIG, LDBL_MIN_EXP, LDBL_MAX_EXP,
+    LDBL_DIG, LDBL_MIN_10_EXP, LDBL_MAX_10_EXP
+  };
+long double lc1 = LDBL_EPSILON;
+long double lc2 = LDBL_MIN;
+#if 0 /* LDBL_MAX is not a constant expression on some platforms.  */
+long double lc3 = LDBL_MAX;
+#endif
+
+static void
+test_long_double (void)
+{
+  /* Check that the value of LDBL_MIN_EXP is well parenthesized.  */
+  ASSERT ((LDBL_MIN_EXP % 101111) == (LDBL_MIN_EXP) % 101111);
+
+  /* Check that the value of LDBL_MIN_10_EXP is well parenthesized.  */
+  ASSERT ((LDBL_MIN_10_EXP % 101111) == (LDBL_MIN_10_EXP) % 101111);
+
+  /* Check that 'long double' is at least as wide as 'double'.  */
+  ASSERT (LDBL_MANT_DIG >= DBL_MANT_DIG);
+  ASSERT (LDBL_MIN_EXP - LDBL_MANT_DIG <= DBL_MIN_EXP - DBL_MANT_DIG);
+  ASSERT (LDBL_MAX_EXP >= DBL_MAX_EXP);
+
+  /* Check the value of LDBL_DIG.  */
+  ASSERT (LDBL_DIG == (int)((LDBL_MANT_DIG - 1) * 0.30103));
+
+  /* Check the value of LDBL_MIN_10_EXP.  */
+  ASSERT (LDBL_MIN_10_EXP == - (int) (- (LDBL_MIN_EXP - 1) * 0.30103));
+
+  /* Check the value of LDBL_MAX_10_EXP.  */
+  ASSERT (LDBL_MAX_10_EXP == (int) (LDBL_MAX_EXP * 0.30103));
+
+  /* Check the value of LDBL_MAX.  */
+  {
+    volatile long double m = LDBL_MAX;
+    int n;
+
+    ASSERT (m + m > m);
+    for (n = 0; n <= 2 * LDBL_MANT_DIG; n++)
+      {
+        volatile long double pow2_n = pow2l (n); /* 2^n */
+        volatile long double x = m + (m / pow2_n);
+        if (x > m)
+          ASSERT (x + x == x);
+        else
+          ASSERT (!(x + x == x));
+      }
+  }
+
+  /* Check the value of LDBL_MIN.  */
+  {
+    volatile long double m = LDBL_MIN;
+    volatile long double x = pow2l (LDBL_MIN_EXP - 1);
+    ASSERT (m == x);
+  }
+
+  /* Check the value of LDBL_EPSILON.  */
+  {
+    volatile long double e = LDBL_EPSILON;
+    volatile long double me;
+    int n;
+
+    me = 1.0L + e;
+    ASSERT (me > 1.0L);
+    ASSERT (me - 1.0L == e);
+    for (n = 0; n <= 2 * LDBL_MANT_DIG; n++)
+      {
+        volatile long double half_n = pow2l (- n); /* 2^-n */
+        volatile long double x = me - half_n;
+        if (x < me)
+          ASSERT (x <= 1.0L);
+      }
+  }
+}
+
+int
+main ()
+{
+  test_float ();
+  test_double ();
+
+  {
+    DECL_LONG_DOUBLE_ROUNDING
+
+    BEGIN_LONG_DOUBLE_ROUNDING ();
+
+    test_long_double ();
+
+    END_LONG_DOUBLE_ROUNDING ();
+  }
+
+  return 0;
+}
+
+#else
+
+int
+main ()
+{
+  fprintf (stderr, "Skipping test: FLT_RADIX is not 2.\n");
+  return 77;
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/test-fnmatch-h.c b/src/grep/gnulib-tests/test-fnmatch-h.c
new file mode 100644
index 0000000..86246fd
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fnmatch-h.c
@@ -0,0 +1,31 @@
+/* Test of <fnmatch.h> substitute.
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2018.  */
+
+#include <config.h>
+
+#include <fnmatch.h>
+
+/* Check that the various FNM_* macros are defined.  */
+int ret = FNM_NOMATCH;
+int options[] = { FNM_PATHNAME, FNM_PERIOD, FNM_NOESCAPE };
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-fnmatch.c b/src/grep/gnulib-tests/test-fnmatch.c
new file mode 100644
index 0000000..ae7fc8a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fnmatch.c
@@ -0,0 +1,66 @@
+/* Test of fnmatch string matching function.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson <simon@josefsson.org>, 2009.  */
+
+#include <config.h>
+
+#include <fnmatch.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fnmatch, int, (char const *, char const *, int));
+
+#include "macros.h"
+
+int
+main ()
+{
+  int res;
+
+  ASSERT (res = fnmatch ("", "", 0) == 0);
+
+  ASSERT (res = fnmatch ("*", "", 0) == 0);
+  ASSERT (res = fnmatch ("*", "foo", 0) == 0);
+  ASSERT (res = fnmatch ("*", "bar", 0) == 0);
+  ASSERT (res = fnmatch ("*", "*", 0) == 0);
+  ASSERT (res = fnmatch ("**", "f", 0) == 0);
+  ASSERT (res = fnmatch ("**", "foo.txt", 0) == 0);
+  ASSERT (res = fnmatch ("*.*", "foo.txt", 0) == 0);
+
+  ASSERT (res = fnmatch ("foo*.txt", "foobar.txt", 0) == 0);
+
+  ASSERT (res = fnmatch ("foo.txt", "foo.txt", 0) == 0);
+  ASSERT (res = fnmatch ("foo\\.txt", "foo.txt", 0) == 0);
+  ASSERT (res = fnmatch ("foo\\.txt", "foo.txt", FNM_NOESCAPE) == FNM_NOMATCH);
+
+  /* Verify that an unmatched [ is treated as a literal, as POSIX
+     requires.  This test ensures that glibc Bugzilla bug #12378 stays
+     fixed.
+   */
+  ASSERT (res = fnmatch ("[/b", "[/b", 0) == 0);
+
+  ASSERT (fnmatch ("[[:alpha:]'[:alpha:]\0]", "a", 0) == FNM_NOMATCH);
+  ASSERT (fnmatch ("[a[.\0.]]", "a", 0) == FNM_NOMATCH);
+#ifdef FNM_EXTMATCH
+  ASSERT (fnmatch ("**(!()", "**(!()", FNM_EXTMATCH) == 0);
+#endif
+#ifdef FNM_LEADING_DIR
+  ASSERT (fnmatch ("x?y", "x/y/z", FNM_PATHNAME | FNM_LEADING_DIR)
+          == FNM_NOMATCH);
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-fopen-gnu.c b/src/grep/gnulib-tests/test-fopen-gnu.c
new file mode 100644
index 0000000..26c5762
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fopen-gnu.c
@@ -0,0 +1,88 @@
+/* Test of opening a file stream.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2020.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdio.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define BASE "test-fopen-gnu.t"
+
+/* 0x1a is an EOF on Windows.  */
+#define DATA "abc\x1axyz"
+
+int
+main (void)
+{
+  FILE *f;
+  int fd;
+  int flags;
+  char buf[16];
+
+  /* Remove anything from prior partial run.  */
+  unlink (BASE "file");
+  unlink (BASE "binary");
+
+  /* Create the file.  */
+  f = fopen (BASE "file", "w");
+  ASSERT (f);
+  fd = fileno (f);
+  ASSERT (fd >= 0);
+  flags = fcntl (fd, F_GETFD);
+  ASSERT (flags >= 0);
+  ASSERT ((flags & FD_CLOEXEC) == 0);
+  ASSERT (fclose (f) == 0);
+
+  /* Create the file and check the 'e' mode.  */
+  f = fopen (BASE "file", "we");
+  ASSERT (f);
+  fd = fileno (f);
+  ASSERT (fd >= 0);
+  flags = fcntl (fd, F_GETFD);
+  ASSERT (flags >= 0);
+  ASSERT ((flags & FD_CLOEXEC) != 0);
+  ASSERT (fclose (f) == 0);
+
+  /* Open the file and check the 'x' mode.  */
+  f = fopen (BASE "file", "ax");
+  ASSERT (f == NULL);
+  ASSERT (errno == EEXIST);
+
+  /* Open a binary file and check that the 'e' mode doesn't interfere.  */
+  f = fopen (BASE "binary", "wbe");
+  ASSERT (f);
+  ASSERT (fwrite (DATA, 1, sizeof (DATA)-1, f) == sizeof (DATA)-1);
+  ASSERT (fclose (f) == 0);
+
+  f = fopen (BASE "binary", "rbe");
+  ASSERT (f);
+  ASSERT (fread (buf, 1, sizeof (buf), f) == sizeof (DATA)-1);
+  ASSERT (fclose (f) == 0);
+
+  /* Cleanup.  */
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (unlink (BASE "binary") == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-fopen.c b/src/grep/gnulib-tests/test-fopen.c
new file mode 100644
index 0000000..f69a13a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fopen.c
@@ -0,0 +1,34 @@
+/* Test of opening a file stream.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fopen, FILE *, (char const *, char const *));
+
+#define BASE "test-fopen.t"
+
+#include "test-fopen.h"
+
+int
+main (void)
+{
+  return test_fopen ();
+}
diff --git a/src/grep/gnulib-tests/test-fopen.h b/src/grep/gnulib-tests/test-fopen.h
new file mode 100644
index 0000000..b6a3dcb
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fopen.h
@@ -0,0 +1,89 @@
+/* Test of opening a file stream.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+/* Include <config.h> and a form of <stdio.h> first.  */
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+/* Test fopen.  Assumes BASE is defined.  */
+
+static int
+test_fopen (void)
+{
+  FILE *f;
+  /* Remove anything from prior partial run.  */
+  unlink (BASE "file");
+
+  /* Read requires existing file.  */
+  errno = 0;
+  ASSERT (fopen (BASE "file", "r") == NULL);
+  ASSERT (errno == ENOENT);
+
+  /* Write can create a file.  */
+  f = fopen (BASE "file", "w");
+  ASSERT (f);
+  ASSERT (fclose (f) == 0);
+
+  /* Trailing slash is invalid on non-directory.  */
+  errno = 0;
+  ASSERT (fopen (BASE "file/", "r") == NULL);
+  ASSERT (errno == ENOTDIR || errno == EISDIR || errno == EINVAL);
+
+  errno = 0;
+  ASSERT (fopen (BASE "file/", "r+") == NULL);
+  ASSERT (errno == ENOTDIR || errno == EISDIR || errno == EINVAL);
+
+  /* Cannot create a directory.  */
+  errno = 0;
+  ASSERT (fopen ("nonexist.ent/", "w") == NULL);
+  ASSERT (errno == ENOTDIR || errno == EISDIR || errno == ENOENT
+          || errno == EINVAL);
+
+  /* Directories cannot be opened for writing.  */
+  errno = 0;
+  ASSERT (fopen (".", "w") == NULL);
+  ASSERT (errno == EISDIR || errno == EINVAL || errno == EACCES);
+
+  errno = 0;
+  ASSERT (fopen ("./", "w") == NULL);
+  ASSERT (errno == EISDIR || errno == EINVAL || errno == EACCES);
+
+  errno = 0;
+  ASSERT (fopen (".", "r+") == NULL);
+  ASSERT (errno == EISDIR || errno == EINVAL || errno == EACCES);
+
+  errno = 0;
+  ASSERT (fopen ("./", "r+") == NULL);
+  ASSERT (errno == EISDIR || errno == EINVAL || errno == EACCES);
+
+  /* /dev/null must exist, and be writable.  */
+  f = fopen ("/dev/null", "r");
+  ASSERT (f);
+  ASSERT (fclose (f) == 0);
+  f = fopen ("/dev/null", "w");
+  ASSERT (f);
+  ASSERT (fclose (f) == 0);
+
+  /* Cleanup.  */
+  ASSERT (unlink (BASE "file") == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-fpending.c b/src/grep/gnulib-tests/test-fpending.c
new file mode 100644
index 0000000..bf79f71
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fpending.c
@@ -0,0 +1,41 @@
+/* Ensure that __fpending works.
+
+   Copyright (C) 2004, 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+   Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "fpending.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  ASSERT (__fpending (stdout) == 0);
+
+  fputs ("foo", stdout);
+  ASSERT (__fpending (stdout) == 3);
+
+  fflush (stdout);
+  ASSERT (__fpending (stdout) == 0);
+
+  exit (0);
+}
diff --git a/src/grep/gnulib-tests/test-fpending.sh b/src/grep/gnulib-tests/test-fpending.sh
new file mode 100755
index 0000000..abe7d83
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fpending.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+tmpfile=
+trap 'rm -fr $tmpfile' 1 2 3 15
+
+tmpfile=test-fpending.t
+
+${CHECKER} ./test-fpending${EXEEXT} > $tmpfile || exit 1
+
+rm -fr $tmpfile
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-fputc.c b/src/grep/gnulib-tests/test-fputc.c
new file mode 100644
index 0000000..47bb844
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fputc.c
@@ -0,0 +1,93 @@
+/* Test of fputc() function.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fputc, int, (int, FILE *));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  const char *filename = "test-fputc.txt";
+
+  /* We don't have an fputc() function that installs an invalid parameter
+     handler so far.  So install that handler here, explicitly.  */
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
+    && MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
+  gl_msvc_inval_ensure_handler ();
+#endif
+
+  /* Test that fputc() on an unbuffered stream sets errno if someone else
+     closes the stream fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen (filename, "w");
+    ASSERT (fp != NULL);
+    setvbuf (fp, NULL, _IONBF, 0);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (fputc ('x', fp) == EOF);
+    ASSERT (errno == EBADF);
+    ASSERT (ferror (fp));
+    fclose (fp);
+  }
+
+  /* Test that fputc() on an unbuffered stream sets errno if the stream
+     was constructed with an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "w");
+    if (fp != NULL)
+      {
+        setvbuf (fp, NULL, _IONBF, 0);
+        errno = 0;
+        ASSERT (fputc ('x', fp) == EOF);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "w");
+    if (fp != NULL)
+      {
+        setvbuf (fp, NULL, _IONBF, 0);
+        errno = 0;
+        ASSERT (fputc ('x', fp) == EOF);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+
+  /* Clean up.  */
+  unlink (filename);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-fread.c b/src/grep/gnulib-tests/test-fread.c
new file mode 100644
index 0000000..f8214ca
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fread.c
@@ -0,0 +1,102 @@
+/* Test of fread() function.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fread, size_t, (void *, size_t, size_t, FILE *));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  const char *filename = "test-fread.txt";
+
+  /* We don't have an fread() function that installs an invalid parameter
+     handler so far.  So install that handler here, explicitly.  */
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
+    && MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
+  gl_msvc_inval_ensure_handler ();
+#endif
+
+  /* Prepare a file.  */
+  {
+    const char text[] = "hello world";
+    int fd = open (filename, O_RDWR | O_CREAT | O_TRUNC, 0600);
+    ASSERT (fd >= 0);
+    ASSERT (write (fd, text, sizeof (text)) == sizeof (text));
+    ASSERT (close (fd) == 0);
+  }
+
+  /* Test that fread() sets errno if someone else closes the stream
+     fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen (filename, "r");
+    char buf[5];
+    ASSERT (fp != NULL);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (fread (buf, 1, sizeof (buf), fp) == 0);
+    ASSERT (errno == EBADF);
+    ASSERT (ferror (fp));
+    fclose (fp);
+  }
+
+  /* Test that fread() sets errno if the stream was constructed with
+     an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "r");
+    if (fp != NULL)
+      {
+        char buf[1];
+        errno = 0;
+        ASSERT (fread (buf, 1, 1, fp) == 0);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "r");
+    if (fp != NULL)
+      {
+        char buf[1];
+        errno = 0;
+        ASSERT (fread (buf, 1, 1, fp) == 0);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+
+  /* Clean up.  */
+  unlink (filename);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-free.c b/src/grep/gnulib-tests/test-free.c
new file mode 100644
index 0000000..53f1085
--- /dev/null
+++ b/src/grep/gnulib-tests/test-free.c
@@ -0,0 +1,175 @@
+/* Test of free() function.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2020.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#if defined __linux__
+# include <fcntl.h>
+# include <stdint.h>
+# include <string.h>
+# include <sys/mman.h>
+#endif
+
+#include "macros.h"
+
+/* The indirection through a volatile function pointer is necessary to prevent
+   a GCC optimization.  Without it, when optimizing, GCC would "know" that errno
+   is unchanged by calling free(ptr), when ptr was the result of a malloc(...)
+   call in the same function.  */
+static int
+get_errno (void)
+{
+  volatile int err = errno;
+  return err;
+}
+
+static int (* volatile get_errno_func) (void) = get_errno;
+
+int
+main ()
+{
+  /* Check that free() preserves errno.  */
+  {
+    errno = 1789; /* Liberté, égalité, fraternité.  */
+    free (NULL);
+    ASSERT_NO_STDIO (get_errno_func () == 1789);
+  }
+  { /* Small memory allocations.  */
+    #define N 10000
+    void * volatile ptrs[N];
+    size_t i;
+    for (i = 0; i < N; i++)
+      ptrs[i] = malloc (15);
+    for (i = 0; i < N; i++)
+      {
+        errno = 1789;
+        free (ptrs[i]);
+        ASSERT_NO_STDIO (get_errno_func () == 1789);
+      }
+    #undef N
+  }
+  { /* Medium memory allocations.  */
+    #define N 1000
+    void * volatile ptrs[N];
+    size_t i;
+    for (i = 0; i < N; i++)
+      ptrs[i] = malloc (729);
+    for (i = 0; i < N; i++)
+      {
+        errno = 1789;
+        free (ptrs[i]);
+        ASSERT_NO_STDIO (get_errno_func () == 1789);
+      }
+    #undef N
+  }
+  { /* Large memory allocations.  */
+    #define N 10
+    void * volatile ptrs[N];
+    size_t i;
+    for (i = 0; i < N; i++)
+      ptrs[i] = malloc (5318153);
+    for (i = 0; i < N; i++)
+      {
+        errno = 1789;
+        free (ptrs[i]);
+        ASSERT_NO_STDIO (get_errno_func () == 1789);
+      }
+    #undef N
+  }
+
+  /* Test a less common code path.
+     When malloc() is based on mmap(), free() can sometimes call munmap().
+     munmap() usually succeeds, but fails in a particular situation: when
+       - it has to unmap the middle part of a VMA, and
+       - the number of VMAs of a process is limited and the limit is
+         already reached.
+     The latter condition is fulfilled on Linux, when the file
+     /proc/sys/vm/max_map_count exists.  This file contains the limit
+       - for Linux >= 2.4.19: 65536 (DEFAULT_MAX_MAP_COUNT in linux/include/linux/sched.h)
+       - for Linux >= 2.6.31: 65530 (DEFAULT_MAX_MAP_COUNT in linux/include/linux/mm.h).
+     But do not test it with glibc < 2.15, since that triggers a glibc internal
+     abort: "malloc.c:3551: munmap_chunk: Assertion `ret == 0' failed."
+   */
+  #if defined __linux__ && !(__GLIBC__ == 2 && __GLIBC_MINOR__ < 15)
+  if (open ("/proc/sys/vm/max_map_count", O_RDONLY) >= 0)
+    {
+      /* Preparations.  */
+      size_t pagesize = getpagesize ();
+      void *firstpage_backup = malloc (pagesize);
+      void *lastpage_backup = malloc (pagesize);
+      /* Allocate a large memory area, as a bumper, so that the MAP_FIXED
+         allocation later will not overwrite parts of the memory areas
+         allocated to ld.so or libc.so.  */
+      void *bumper_region =
+        mmap (NULL, 0x1000000, PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
+      /* A file descriptor pointing to a regular file.  */
+      int fd = open ("test-free", O_RDONLY);
+
+      if (firstpage_backup != NULL && lastpage_backup != NULL
+          && bumper_region != (void *)(-1)
+          && fd >= 0)
+        {
+          /* Do a large memory allocation.  */
+          size_t big_size = 0x1000000;
+          void * volatile ptr = malloc (big_size - 0x100);
+          char *ptr_aligned = (char *) ((uintptr_t) ptr & ~(pagesize - 1));
+          /* This large memory allocation allocated a memory area
+             from ptr_aligned to ptr_aligned + big_size.
+             Enlarge this memory area by adding a page before and a page
+             after it.  */
+          memcpy (firstpage_backup, ptr_aligned, pagesize);
+          memcpy (lastpage_backup, ptr_aligned + big_size - pagesize, pagesize);
+          if (mmap (ptr_aligned - pagesize, pagesize + big_size + pagesize,
+                    PROT_READ | PROT_WRITE,
+                    MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0)
+              != (void *)(-1))
+            {
+              memcpy (ptr_aligned, firstpage_backup, pagesize);
+              memcpy (ptr_aligned + big_size - pagesize, lastpage_backup, pagesize);
+
+              /* Now add as many mappings as we can.
+                 Stop at 65536, in order not to crash the machine (in case the
+                 limit has been increased by the system administrator).  */
+              size_t i;
+              for (i = 0; i < 65536; i++)
+                if (mmap (NULL, pagesize, PROT_READ, MAP_FILE | MAP_PRIVATE, fd, 0)
+                    == (void *)(-1))
+                  break;
+              /* Now the number of VMAs of this process has hopefully attained
+                 its limit.  */
+
+              errno = 1789;
+              /* This call to free() is supposed to call
+                   munmap (ptr_aligned, big_size);
+                 which increases the number of VMAs by 1, which is supposed
+                 to fail.  */
+              free (ptr);
+              ASSERT_NO_STDIO (get_errno_func () == 1789);
+            }
+        }
+    }
+  #endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-fstat.c b/src/grep/gnulib-tests/test-fstat.c
new file mode 100644
index 0000000..0d78e17
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fstat.c
@@ -0,0 +1,50 @@
+/* Tests of fstat() function.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fstat, int, (int, struct stat *));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    struct stat statbuf;
+
+    errno = 0;
+    ASSERT (fstat (-1, &statbuf) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    struct stat statbuf;
+
+    close (99);
+    errno = 0;
+    ASSERT (fstat (99, &statbuf) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-fstatat.c b/src/grep/gnulib-tests/test-fstatat.c
new file mode 100644
index 0000000..3c8ce74
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fstatat.c
@@ -0,0 +1,108 @@
+/* Tests of fstatat.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fstatat, int, (int, char const *, struct stat *, int));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "openat.h"
+#include "same-inode.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#ifndef BASE
+# define BASE "test-fstatat.t"
+#endif
+
+#include "test-lstat.h"
+#include "test-stat.h"
+
+static int dfd = AT_FDCWD;
+
+/* Wrapper around fstatat to test stat behavior.  */
+static int
+do_stat (char const *name, struct stat *st)
+{
+#ifdef TEST_STATAT
+  return statat (dfd, name, st);
+#else
+  return fstatat (dfd, name, st, 0);
+#endif
+}
+
+/* Wrapper around fstatat to test lstat behavior.  */
+static int
+do_lstat (char const *name, struct stat *st)
+{
+#ifdef TEST_STATAT
+  return lstatat (dfd, name, st);
+#else
+  return fstatat (dfd, name, st, AT_SYMLINK_NOFOLLOW);
+#endif
+}
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  int result;
+
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    struct stat statbuf;
+
+    errno = 0;
+    ASSERT (fstatat (-1, "foo", &statbuf, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    struct stat statbuf;
+
+    close (99);
+    errno = 0;
+    ASSERT (fstatat (99, "foo", &statbuf, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  result = test_stat_func (do_stat, false);
+  ASSERT (test_lstat_func (do_lstat, false) == result);
+  dfd = open (".", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (test_stat_func (do_stat, false) == result);
+  ASSERT (test_lstat_func (do_lstat, false) == result);
+  ASSERT (close (dfd) == 0);
+
+  /* FIXME - add additional tests of dfd not at current directory.  */
+
+  if (result == 77)
+    fputs ("skipping test: symlinks not supported on this file system\n",
+           stderr);
+  return result;
+}
diff --git a/src/grep/gnulib-tests/test-ftruncate.c b/src/grep/gnulib-tests/test-ftruncate.c
new file mode 100644
index 0000000..d11b8eb
--- /dev/null
+++ b/src/grep/gnulib-tests/test-ftruncate.c
@@ -0,0 +1,60 @@
+/* Test truncating a file.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (ftruncate, int, (int, off_t));
+
+#include <errno.h>
+#include <fcntl.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  const char *filename = argv[1];
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (ftruncate (-1, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (ftruncate (99, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Test behaviour for read-only file descriptors.  */
+  {
+    int fd = open (filename, O_RDONLY);
+    ASSERT (fd >= 0);
+    errno = 0;
+    ASSERT (ftruncate (fd, 0) == -1);
+    ASSERT (errno == EBADF || errno == EINVAL
+            || errno == EACCES /* seen on mingw */
+           );
+    close (fd);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-ftruncate.sh b/src/grep/gnulib-tests/test-ftruncate.sh
new file mode 100755
index 0000000..203e07b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-ftruncate.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec ${CHECKER} ./test-ftruncate${EXEEXT} "$srcdir/test-ftruncate.sh"
diff --git a/src/grep/gnulib-tests/test-fwrite.c b/src/grep/gnulib-tests/test-fwrite.c
new file mode 100644
index 0000000..17e80bd
--- /dev/null
+++ b/src/grep/gnulib-tests/test-fwrite.c
@@ -0,0 +1,96 @@
+/* Test of fwrite() function.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fwrite, size_t, (const void *, size_t, size_t, FILE *));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  const char *filename = "test-fwrite.txt";
+
+  /* We don't have an fwrite() function that installs an invalid parameter
+     handler so far.  So install that handler here, explicitly.  */
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
+    && MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
+  gl_msvc_inval_ensure_handler ();
+#endif
+
+  /* Test that fwrite() on an unbuffered stream sets errno if someone else
+     closes the stream fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen (filename, "w");
+    char buf[5] = "world";
+    ASSERT (fp != NULL);
+    setvbuf (fp, NULL, _IONBF, 0);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (fwrite (buf, 1, sizeof (buf), fp) == 0);
+    ASSERT (errno == EBADF);
+    ASSERT (ferror (fp));
+    fclose (fp);
+  }
+
+  /* Test that fwrite() on an unbuffered stream sets errno if the stream
+     was constructed with an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "w");
+    if (fp != NULL)
+      {
+        char buf[5] = "world";
+        setvbuf (fp, NULL, _IONBF, 0);
+        errno = 0;
+        ASSERT (fwrite (buf, 1, sizeof (buf), fp) == 0);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "w");
+    if (fp != NULL)
+      {
+        char buf[5] = "world";
+        setvbuf (fp, NULL, _IONBF, 0);
+        errno = 0;
+        ASSERT (fwrite (buf, 1, sizeof (buf), fp) == 0);
+        ASSERT (errno == EBADF);
+        ASSERT (ferror (fp));
+        fclose (fp);
+      }
+  }
+
+  /* Clean up.  */
+  unlink (filename);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-getcwd-lgpl.c b/src/grep/gnulib-tests/test-getcwd-lgpl.c
new file mode 100644
index 0000000..17080d9
--- /dev/null
+++ b/src/grep/gnulib-tests/test-getcwd-lgpl.c
@@ -0,0 +1,102 @@
+/* Test of getcwd() function.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (getcwd, char *, (char *, size_t));
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  char *pwd1;
+  char *pwd2;
+  /* If the user provides an argument, attempt to chdir there first.  */
+  if (1 < argc)
+    {
+      if (chdir (argv[1]) == 0)
+        printf ("changed to directory %s\n", argv[1]);
+    }
+
+  pwd1 = getcwd (NULL, 0);
+  ASSERT (pwd1 && *pwd1);
+  if (1 < argc)
+    printf ("cwd=%s\n", pwd1);
+
+  /* Make sure the result is usable.  */
+  ASSERT (chdir (pwd1) == 0);
+  ASSERT (chdir (".//./.") == 0);
+
+  /* Make sure that result is normalized.  */
+  pwd2 = getcwd (NULL, 0);
+  ASSERT (pwd2);
+  ASSERT (strcmp (pwd1, pwd2) == 0);
+  free (pwd2);
+  {
+    size_t len = strlen (pwd1);
+    ssize_t i = len - 10;
+    if (i < 1)
+      i = 1;
+    pwd2 = getcwd (NULL, len + 1);
+    ASSERT (pwd2);
+    free (pwd2);
+    pwd2 = malloc (len + 2);
+    for ( ; i <= len; i++)
+      {
+        char *tmp;
+        errno = 0;
+        ASSERT (getcwd (pwd2, i) == NULL);
+        ASSERT (errno == ERANGE);
+        /* Allow either glibc or BSD behavior, since POSIX allows both.  */
+        errno = 0;
+        tmp = getcwd (NULL, i);
+        if (tmp)
+          {
+            ASSERT (strcmp (pwd1, tmp) == 0);
+            free (tmp);
+          }
+        else
+          {
+            ASSERT (errno == ERANGE);
+          }
+      }
+    ASSERT (getcwd (pwd2, len + 1) == pwd2);
+    pwd2[len] = '/';
+    pwd2[len + 1] = '\0';
+  }
+  ASSERT (strstr (pwd2, "/./") == NULL);
+  ASSERT (strstr (pwd2, "/../") == NULL);
+  ASSERT (strstr (pwd2 + 1 + (pwd2[1] == '/'), "//") == NULL);
+
+  /* Validate a POSIX requirement on size.  */
+  errno = 0;
+  ASSERT (getcwd(pwd2, 0) == NULL);
+  ASSERT (errno == EINVAL);
+
+  free (pwd1);
+  free (pwd2);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-getdtablesize.c b/src/grep/gnulib-tests/test-getdtablesize.c
new file mode 100644
index 0000000..d56c682
--- /dev/null
+++ b/src/grep/gnulib-tests/test-getdtablesize.c
@@ -0,0 +1,36 @@
+/* Test of getdtablesize() function.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (getdtablesize, int, (void));
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  ASSERT (getdtablesize () >= 3);
+  ASSERT (dup2 (0, getdtablesize() - 1) == getdtablesize () - 1);
+  ASSERT (dup2 (0, getdtablesize()) == -1);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-getopt-gnu.c b/src/grep/gnulib-tests/test-getopt-gnu.c
new file mode 100644
index 0000000..fe1ab3c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-getopt-gnu.c
@@ -0,0 +1,45 @@
+/* Test of command line argument processing.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   ftell link warning if we are not using the gnulib ftell module.  */
+#define _GL_NO_LARGE_FILES
+
+/* POSIX and glibc provide the getopt() function in <unistd.h>, see
+   https://pubs.opengroup.org/onlinepubs/9699919799/functions/getopt.html
+   https://www.gnu.org/software/libc/manual/html_node/Using-Getopt.html
+   But gnulib provides the getopt() function in <getopt.h>, not in <unistd.h>.
+   This is what we are testing here.  */
+#include <getopt.h>
+
+#ifndef __getopt_argv_const
+# define __getopt_argv_const const
+#endif
+#include "signature.h"
+SIGNATURE_CHECK (getopt_long, int, (int, char *__getopt_argv_const *,
+                                    char const *, struct option const *,
+                                    int *));
+SIGNATURE_CHECK (getopt_long_only, int, (int, char *__getopt_argv_const *,
+                                         char const *, struct option const *,
+                                         int *));
+
+#define TEST_GETOPT_GNU 1
+#define TEST_GETOPT_TMP_NAME "test-getopt-gnu.tmp"
+#include "test-getopt-main.h"
diff --git a/src/grep/gnulib-tests/test-getopt-main.h b/src/grep/gnulib-tests/test-getopt-main.h
new file mode 100644
index 0000000..c86dc8d
--- /dev/null
+++ b/src/grep/gnulib-tests/test-getopt-main.h
@@ -0,0 +1,76 @@
+/* Test of command line argument processing.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include "signature.h"
+SIGNATURE_CHECK (getopt, int, (int, char * const[], char const *));
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/* This test intentionally remaps stderr.  So, we arrange to have fd 10
+   (outside the range of interesting fd's during the test) set up to
+   duplicate the original stderr.  */
+
+#define BACKUP_STDERR_FILENO 10
+#define ASSERT_STREAM myerr
+#include "macros.h"
+
+static FILE *myerr;
+
+#include "test-getopt.h"
+#if TEST_GETOPT_GNU
+# include "test-getopt_long.h"
+#endif
+
+int
+main (void)
+{
+   /* This test validates that stderr is used correctly, so move the
+      original into fd 10.  */
+  if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO
+      || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)
+    return 2;
+
+  ASSERT (freopen (TEST_GETOPT_TMP_NAME, "w", stderr) == stderr);
+
+  /* These default values are required by POSIX.  */
+  ASSERT (optind == 1);
+  ASSERT (opterr != 0);
+
+  setenv ("POSIXLY_CORRECT", "1", 1);
+  test_getopt ();
+
+#if TEST_GETOPT_GNU
+  test_getopt_long_posix ();
+#endif
+
+  unsetenv ("POSIXLY_CORRECT");
+  test_getopt ();
+
+#if TEST_GETOPT_GNU
+  test_getopt_long ();
+  test_getopt_long_only ();
+#endif
+
+  ASSERT (fclose (stderr) == 0);
+  ASSERT (remove (TEST_GETOPT_TMP_NAME) == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-getopt-posix.c b/src/grep/gnulib-tests/test-getopt-posix.c
new file mode 100644
index 0000000..26d5764
--- /dev/null
+++ b/src/grep/gnulib-tests/test-getopt-posix.c
@@ -0,0 +1,34 @@
+/* Test of command line argument processing.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+/* None of the files accessed by this test are large, so disable the
+   ftell link warning if we are not using the gnulib ftell module.  */
+#define _GL_NO_LARGE_FILES
+
+/* POSIX and glibc provide the getopt() function in <unistd.h>, see
+   https://pubs.opengroup.org/onlinepubs/9699919799/functions/getopt.html
+   https://www.gnu.org/software/libc/manual/html_node/Using-Getopt.html
+   But gnulib provides the getopt() function in <getopt.h>, not in <unistd.h>.
+   Nevertheless the getopt() function should also be found in <unistd.h>.  */
+#include <unistd.h>
+
+#define TEST_GETOPT_GNU 0
+#define TEST_GETOPT_TMP_NAME "test-getopt-posix.tmp"
+#include "test-getopt-main.h"
diff --git a/src/grep/gnulib-tests/test-getopt.h b/src/grep/gnulib-tests/test-getopt.h
new file mode 100644
index 0000000..5cc9d8c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-getopt.h
@@ -0,0 +1,1391 @@
+/* Test of command line argument processing.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <stdbool.h>
+
+/* The glibc/gnulib implementation of getopt supports setting optind =
+   0, but not all other implementations do.  This matters for getopt.
+   But for getopt_long, we require GNU compatibility.  */
+#if defined __GETOPT_PREFIX || (__GLIBC__ >= 2 && !defined __UCLIBC__)
+# define OPTIND_MIN 0
+#elif HAVE_DECL_OPTRESET
+# define OPTIND_MIN (optreset = 1)
+#else
+# define OPTIND_MIN 1
+#endif
+
+static void
+getopt_loop (int argc, const char **argv,
+             const char *options,
+             int *a_seen, int *b_seen,
+             const char **p_value, const char **q_value,
+             int *non_options_count, const char **non_options,
+             int *unrecognized, bool *message_issued)
+{
+  int c;
+  int pos = ftell (stderr);
+
+  while ((c = getopt (argc, (char **) argv, options)) != -1)
+    {
+      switch (c)
+        {
+        case 'a':
+          (*a_seen)++;
+          break;
+        case 'b':
+          (*b_seen)++;
+          break;
+        case 'p':
+          *p_value = optarg;
+          break;
+        case 'q':
+          *q_value = optarg;
+          break;
+        case '\1':
+          /* Must only happen with option '-' at the beginning.  */
+          ASSERT (options[0] == '-');
+          non_options[(*non_options_count)++] = optarg;
+          break;
+        case ':':
+          /* Must only happen with option ':' at the beginning.  */
+          ASSERT (options[0] == ':'
+                  || ((options[0] == '-' || options[0] == '+')
+                      && options[1] == ':'));
+          FALLTHROUGH;
+        case '?':
+          *unrecognized = optopt;
+          break;
+        default:
+          *unrecognized = c;
+          break;
+        }
+    }
+
+  *message_issued = pos < ftell (stderr);
+}
+
+static void
+test_getopt (void)
+{
+  int start;
+  bool posixly = !!getenv ("POSIXLY_CORRECT");
+  /* See comment in getopt.c:
+     glibc gets a LSB-compliant getopt.
+     Standalone applications get a POSIX-compliant getopt.  */
+#if defined __GETOPT_PREFIX || !(__GLIBC__ >= 2 || defined __MINGW32__)
+  /* Using getopt from gnulib or from a non-glibc system.  */
+  posixly = true;
+#endif
+
+  /* Test processing of boolean options.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-a";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "ab",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-b";
+      argv[argc++] = "-a";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "ab",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ba";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "ab",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ab";
+      argv[argc++] = "-a";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "ab",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 2);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+      ASSERT (!output);
+    }
+
+  /* Test processing of options with arguments.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-pfoo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "p:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "p:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ab";
+      argv[argc++] = "-q";
+      argv[argc++] = "baz";
+      argv[argc++] = "-pfoo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value != NULL && strcmp (q_value, "baz") == 0);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+      ASSERT (!output);
+    }
+
+#if GNULIB_TEST_GETOPT_GNU
+  /* Test processing of options with optional arguments.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-pfoo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "p::q::",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "p::q::",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp::q::",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+      ASSERT (!output);
+    }
+#endif /* GNULIB_TEST_GETOPT_GNU */
+
+  /* Check that invalid options are recognized; and that both opterr
+     and leading ':' can silence output.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-x";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 42;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'x');
+      ASSERT (optind == 5);
+      ASSERT (output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-x";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 0;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'x');
+      ASSERT (optind == 5);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-x";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, ":abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'x');
+      ASSERT (optind == 5);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-:";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 42;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == ':');
+      ASSERT (optind == 5);
+      ASSERT (output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-:";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 0;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == ':');
+      ASSERT (optind == 5);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-:";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, ":abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == ':');
+      ASSERT (optind == 5);
+      ASSERT (!output);
+    }
+
+  /* Check for missing argument behavior.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ap";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'p');
+      ASSERT (optind == 2);
+      ASSERT (output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ap";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 0;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'p');
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ap";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, ":abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'p');
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+
+  /* Check that by default, non-options arguments are moved to the end.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      if (posixly)
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "donald") == 0);
+          ASSERT (strcmp (argv[2], "-p") == 0);
+          ASSERT (strcmp (argv[3], "billy") == 0);
+          ASSERT (strcmp (argv[4], "duck") == 0);
+          ASSERT (strcmp (argv[5], "-a") == 0);
+          ASSERT (strcmp (argv[6], "bar") == 0);
+          ASSERT (argv[7] == NULL);
+          ASSERT (a_seen == 0);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value == NULL);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 1);
+          ASSERT (!output);
+        }
+      else
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "-p") == 0);
+          ASSERT (strcmp (argv[2], "billy") == 0);
+          ASSERT (strcmp (argv[3], "-a") == 0);
+          ASSERT (strcmp (argv[4], "donald") == 0);
+          ASSERT (strcmp (argv[5], "duck") == 0);
+          ASSERT (strcmp (argv[6], "bar") == 0);
+          ASSERT (argv[7] == NULL);
+          ASSERT (a_seen == 1);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 4);
+          ASSERT (!output);
+        }
+    }
+
+  /* Check that '--' ends the argument processing.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[20];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "--";
+      argv[argc++] = "-b";
+      argv[argc++] = "foo";
+      argv[argc++] = "-q";
+      argv[argc++] = "johnny";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      if (posixly)
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "donald") == 0);
+          ASSERT (strcmp (argv[2], "-p") == 0);
+          ASSERT (strcmp (argv[3], "billy") == 0);
+          ASSERT (strcmp (argv[4], "duck") == 0);
+          ASSERT (strcmp (argv[5], "-a") == 0);
+          ASSERT (strcmp (argv[6], "--") == 0);
+          ASSERT (strcmp (argv[7], "-b") == 0);
+          ASSERT (strcmp (argv[8], "foo") == 0);
+          ASSERT (strcmp (argv[9], "-q") == 0);
+          ASSERT (strcmp (argv[10], "johnny") == 0);
+          ASSERT (strcmp (argv[11], "bar") == 0);
+          ASSERT (argv[12] == NULL);
+          ASSERT (a_seen == 0);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value == NULL);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 1);
+          ASSERT (!output);
+        }
+      else
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "-p") == 0);
+          ASSERT (strcmp (argv[2], "billy") == 0);
+          ASSERT (strcmp (argv[3], "-a") == 0);
+          ASSERT (strcmp (argv[4], "--") == 0);
+          ASSERT (strcmp (argv[5], "donald") == 0);
+          ASSERT (strcmp (argv[6], "duck") == 0);
+          ASSERT (strcmp (argv[7], "-b") == 0);
+          ASSERT (strcmp (argv[8], "foo") == 0);
+          ASSERT (strcmp (argv[9], "-q") == 0);
+          ASSERT (strcmp (argv[10], "johnny") == 0);
+          ASSERT (strcmp (argv[11], "bar") == 0);
+          ASSERT (argv[12] == NULL);
+          ASSERT (a_seen == 1);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 5);
+          ASSERT (!output);
+        }
+    }
+
+#if GNULIB_TEST_GETOPT_GNU
+  /* Check that the '-' flag causes non-options to be returned in order.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "-abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 3);
+      ASSERT (strcmp (non_options[0], "donald") == 0);
+      ASSERT (strcmp (non_options[1], "duck") == 0);
+      ASSERT (strcmp (non_options[2], "bar") == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 7);
+      ASSERT (!output);
+    }
+
+  /* Check that '--' ends the argument processing.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[20];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "--";
+      argv[argc++] = "-b";
+      argv[argc++] = "foo";
+      argv[argc++] = "-q";
+      argv[argc++] = "johnny";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "-abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "--") == 0);
+      ASSERT (strcmp (argv[7], "-b") == 0);
+      ASSERT (strcmp (argv[8], "foo") == 0);
+      ASSERT (strcmp (argv[9], "-q") == 0);
+      ASSERT (strcmp (argv[10], "johnny") == 0);
+      ASSERT (strcmp (argv[11], "bar") == 0);
+      ASSERT (argv[12] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (!output);
+      if (non_options_count == 2)
+        {
+          /* glibc behaviour.  */
+          ASSERT (non_options_count == 2);
+          ASSERT (strcmp (non_options[0], "donald") == 0);
+          ASSERT (strcmp (non_options[1], "duck") == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 7);
+        }
+      else
+        {
+          /* Another valid behaviour.  */
+          ASSERT (non_options_count == 7);
+          ASSERT (strcmp (non_options[0], "donald") == 0);
+          ASSERT (strcmp (non_options[1], "duck") == 0);
+          ASSERT (strcmp (non_options[2], "-b") == 0);
+          ASSERT (strcmp (non_options[3], "foo") == 0);
+          ASSERT (strcmp (non_options[4], "-q") == 0);
+          ASSERT (strcmp (non_options[5], "johnny") == 0);
+          ASSERT (strcmp (non_options[6], "bar") == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 12);
+        }
+    }
+
+  /* Check that the '-' flag has to come first.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp:q:-",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      if (posixly)
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "donald") == 0);
+          ASSERT (strcmp (argv[2], "-p") == 0);
+          ASSERT (strcmp (argv[3], "billy") == 0);
+          ASSERT (strcmp (argv[4], "duck") == 0);
+          ASSERT (strcmp (argv[5], "-a") == 0);
+          ASSERT (strcmp (argv[6], "bar") == 0);
+          ASSERT (argv[7] == NULL);
+          ASSERT (a_seen == 0);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value == NULL);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 1);
+          ASSERT (!output);
+        }
+      else
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "-p") == 0);
+          ASSERT (strcmp (argv[2], "billy") == 0);
+          ASSERT (strcmp (argv[3], "-a") == 0);
+          ASSERT (strcmp (argv[4], "donald") == 0);
+          ASSERT (strcmp (argv[5], "duck") == 0);
+          ASSERT (strcmp (argv[6], "bar") == 0);
+          ASSERT (argv[7] == NULL);
+          ASSERT (a_seen == 1);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 4);
+          ASSERT (!output);
+        }
+    }
+
+  /* Check that the '+' flag causes the first non-option to terminate the
+     loop.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "+abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 1);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-+";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_loop (argc, argv, "+abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == '+');
+      ASSERT (optind == 2);
+      ASSERT (output);
+    }
+
+  /* Check that '--' ends the argument processing.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[20];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "--";
+      argv[argc++] = "-b";
+      argv[argc++] = "foo";
+      argv[argc++] = "-q";
+      argv[argc++] = "johnny";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "+abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "--") == 0);
+      ASSERT (strcmp (argv[7], "-b") == 0);
+      ASSERT (strcmp (argv[8], "foo") == 0);
+      ASSERT (strcmp (argv[9], "-q") == 0);
+      ASSERT (strcmp (argv[10], "johnny") == 0);
+      ASSERT (strcmp (argv[11], "bar") == 0);
+      ASSERT (argv[12] == NULL);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 1);
+      ASSERT (!output);
+    }
+#endif /* GNULIB_TEST_GETOPT_GNU */
+
+  /* Check that the '+' flag has to come first.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "abp:q:+",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      if (posixly)
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "donald") == 0);
+          ASSERT (strcmp (argv[2], "-p") == 0);
+          ASSERT (strcmp (argv[3], "billy") == 0);
+          ASSERT (strcmp (argv[4], "duck") == 0);
+          ASSERT (strcmp (argv[5], "-a") == 0);
+          ASSERT (strcmp (argv[6], "bar") == 0);
+          ASSERT (argv[7] == NULL);
+          ASSERT (a_seen == 0);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value == NULL);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 1);
+          ASSERT (!output);
+        }
+      else
+        {
+          ASSERT (strcmp (argv[0], "program") == 0);
+          ASSERT (strcmp (argv[1], "-p") == 0);
+          ASSERT (strcmp (argv[2], "billy") == 0);
+          ASSERT (strcmp (argv[3], "-a") == 0);
+          ASSERT (strcmp (argv[4], "donald") == 0);
+          ASSERT (strcmp (argv[5], "duck") == 0);
+          ASSERT (strcmp (argv[6], "bar") == 0);
+          ASSERT (argv[7] == NULL);
+          ASSERT (a_seen == 1);
+          ASSERT (b_seen == 0);
+          ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+          ASSERT (q_value == NULL);
+          ASSERT (non_options_count == 0);
+          ASSERT (unrecognized == 0);
+          ASSERT (optind == 4);
+          ASSERT (!output);
+        }
+    }
+
+#if GNULIB_TEST_GETOPT_GNU
+  /* If GNU extensions are supported, require compliance with POSIX
+     interpretation on leading '+' behavior.
+     http://austingroupbugs.net/view.php?id=191  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      getopt_loop (argc, argv, "+:abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 1);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_loop (argc, argv, "+:abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'p');
+      ASSERT (optind == 2);
+      ASSERT (!output);
+    }
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int a_seen = 0;
+      int b_seen = 0;
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      bool output;
+      int argc = 0;
+      const char *argv[10];
+
+      argv[argc++] = "program";
+      argv[argc++] = "-b";
+      argv[argc++] = "-p";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_loop (argc, argv, "+:abp:q:",
+                   &a_seen, &b_seen, &p_value, &q_value,
+                   &non_options_count, non_options, &unrecognized, &output);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'p');
+      ASSERT (optind == 3);
+      ASSERT (!output);
+    }
+
+  /* Check that 'W' does not dump core:
+     https://sourceware.org/bugzilla/show_bug.cgi?id=12922
+     Technically, POSIX says the presence of ';' in the opt-string
+     gives unspecified behavior, so we only test this when GNU compliance
+     is desired.  */
+  for (start = OPTIND_MIN; start <= 1; start++)
+    {
+      int argc = 0;
+      const char *argv[10];
+      int pos = ftell (stderr);
+
+      argv[argc++] = "program";
+      argv[argc++] = "-W";
+      argv[argc++] = "dummy";
+      argv[argc] = NULL;
+      optind = start;
+      opterr = 1;
+      ASSERT (getopt (argc, (char **) argv, "W;") == 'W');
+      ASSERT (ftell (stderr) == pos);
+      ASSERT (optind == 2);
+    }
+#endif /* GNULIB_TEST_GETOPT_GNU */
+}
diff --git a/src/grep/gnulib-tests/test-getopt_long.h b/src/grep/gnulib-tests/test-getopt_long.h
new file mode 100644
index 0000000..5e3c50a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-getopt_long.h
@@ -0,0 +1,2144 @@
+/* Test of command line argument processing.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+static int a_seen;
+static int b_seen;
+static int q_seen;
+
+static const struct option long_options_required[] =
+  {
+    { "alpha",    no_argument,       NULL, 'a' },
+    { "beta",     no_argument,       &b_seen, 1 },
+    { "prune",    required_argument, NULL, 'p' },
+    { "quetsche", required_argument, &q_seen, 1 },
+    { "xtremely-",no_argument,       NULL, 1003 },
+    { "xtra",     no_argument,       NULL, 1001 },
+    { "xtreme",   no_argument,       NULL, 1002 },
+    { "xtremely", no_argument,       NULL, 1003 },
+    { NULL,       0,                 NULL, 0 }
+  };
+
+static const struct option long_options_optional[] =
+  {
+    { "alpha",    no_argument,       NULL, 'a' },
+    { "beta",     no_argument,       &b_seen, 1 },
+    { "prune",    optional_argument, NULL, 'p' },
+    { "quetsche", optional_argument, &q_seen, 1 },
+    { NULL,       0,                 NULL, 0 }
+  };
+
+static void
+getopt_long_loop (int argc, const char **argv,
+                  const char *options, const struct option *long_options,
+                  const char **p_value, const char **q_value,
+                  int *non_options_count, const char **non_options,
+                  int *unrecognized)
+{
+  int option_index = -1;
+  int c;
+
+  opterr = 0;
+  q_seen = 0;
+  while ((c = getopt_long (argc, (char **) argv, options, long_options,
+                           &option_index))
+         != -1)
+    {
+      switch (c)
+        {
+        case 0:
+          /* An option with a non-NULL flag pointer was processed.  */
+          if (q_seen)
+            *q_value = optarg;
+          break;
+        case 'a':
+          a_seen++;
+          break;
+        case 'b':
+          b_seen = 1;
+          break;
+        case 'p':
+          *p_value = optarg;
+          break;
+        case 'q':
+          *q_value = optarg;
+          break;
+        case '\1':
+          /* Must only happen with option '-' at the beginning.  */
+          ASSERT (options[0] == '-');
+          non_options[(*non_options_count)++] = optarg;
+          break;
+        case ':':
+          /* Must only happen with option ':' at the beginning.  */
+          ASSERT (options[0] == ':'
+                  || ((options[0] == '-' || options[0] == '+')
+                      && options[1] == ':'));
+          FALLTHROUGH;
+        case '?':
+          *unrecognized = optopt;
+          break;
+        default:
+          *unrecognized = c;
+          break;
+        }
+    }
+}
+
+/* Reduce casting, so we can use string literals elsewhere.
+   getopt_long takes an array of char*, but luckily does not modify
+   those elements, so we can pass const char*.  */
+static int
+do_getopt_long (int argc, const char **argv, const char *shortopts,
+                const struct option *longopts, int *longind)
+{
+  return getopt_long (argc, (char **) argv, shortopts, longopts, longind);
+}
+
+static void
+test_getopt_long (void)
+{
+  int start;
+
+  /* Test disambiguation of options.  */
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--x";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xt";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtr";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtra";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == 1001);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtre";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtrem";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtreme";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == 1002);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtremel";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == 1003);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--xtremely";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "ab", long_options_required, &option_index);
+    ASSERT (c == 1003);
+  }
+
+  /* Check that -W handles unknown options.  */
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-W";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "W;", long_options_required, &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 'W');
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-Wunknown";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "W;", long_options_required, &option_index);
+    /* glibc and BSD behave differently here, but for now, we allow
+       both behaviors since W support is not frequently used.  */
+    if (c == '?')
+      {
+        ASSERT (optopt == 0);
+        ASSERT (optarg == NULL);
+      }
+    else
+      {
+        ASSERT (c == 'W');
+        ASSERT (strcmp (optarg, "unknown") == 0);
+      }
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-W";
+    argv[argc++] = "unknown";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "W;", long_options_required, &option_index);
+    /* glibc and BSD behave differently here, but for now, we allow
+       both behaviors since W support is not frequently used.  */
+    if (c == '?')
+      {
+        ASSERT (optopt == 0);
+        ASSERT (optarg == NULL);
+      }
+    else
+      {
+        ASSERT (c == 'W');
+        ASSERT (strcmp (optarg, "unknown") == 0);
+      }
+  }
+
+  /* Test that 'W' does not dump core:
+     https://sourceware.org/bugzilla/show_bug.cgi?id=12922  */
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-W";
+    argv[argc++] = "dummy";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long (argc, argv, "W;", NULL, &option_index);
+    ASSERT (c == 'W');
+    ASSERT (optind == 2);
+  }
+
+  /* Test processing of boolean short options.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-a";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-b";
+      argv[argc++] = "-a";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ba";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ab";
+      argv[argc++] = "-a";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 2);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+
+  /* Test processing of boolean long options.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--alpha";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--beta";
+      argv[argc++] = "--alpha";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--alpha";
+      argv[argc++] = "--beta";
+      argv[argc++] = "--alpha";
+      argv[argc++] = "--beta";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 2);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+    }
+
+  /* Test processing of boolean long options via -W.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-Walpha";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abW;", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-W";
+      argv[argc++] = "beta";
+      argv[argc++] = "-W";
+      argv[argc++] = "alpha";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "aW;b", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-Walpha";
+      argv[argc++] = "-Wbeta";
+      argv[argc++] = "-Walpha";
+      argv[argc++] = "-Wbeta";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "W;ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 2);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+    }
+
+  /* Test processing of short options with arguments.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-pfoo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ab";
+      argv[argc++] = "-q";
+      argv[argc++] = "baz";
+      argv[argc++] = "-pfoo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value != NULL && strcmp (q_value, "baz") == 0);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+    }
+
+  /* Test processing of long options with arguments.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--p=foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ab";
+      argv[argc++] = "--q";
+      argv[argc++] = "baz";
+      argv[argc++] = "--p=foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value != NULL && strcmp (q_value, "baz") == 0);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+    }
+
+  /* Test processing of long options with arguments via -W.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-Wp=foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p:q:W;", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-W";
+      argv[argc++] = "p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p:W;q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-ab";
+      argv[argc++] = "-Wq";
+      argv[argc++] = "baz";
+      argv[argc++] = "-W";
+      argv[argc++] = "p=foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "W;abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value != NULL && strcmp (q_value, "baz") == 0);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 6);
+    }
+
+  /* Test processing of short options with optional arguments.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-pfoo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+
+  /* Test processing of long options with optional arguments.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--p=foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--p";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--p=";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && *p_value == '\0');
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "--p";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+
+  /* Test processing of long options with optional arguments via -W.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-Wp=foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::W;", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-Wp";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::q::W;", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-Wp=";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "W;p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && *p_value == '\0');
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-W";
+      argv[argc++] = "p=";
+      argv[argc++] = "foo";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "W;p::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && *p_value == '\0');
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 3);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-W";
+      argv[argc++] = "p";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "W;abp::q::", long_options_optional,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      /* ASSERT (p_value == NULL); */
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+
+  /* Check that invalid options are recognized.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-x";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'x');
+      ASSERT (optind == 5);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "-:";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == ':');
+      ASSERT (optind == 5);
+    }
+
+  /* Check that unexpected arguments are recognized.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "--a=";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 'a');
+      ASSERT (optind == 4);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "foo";
+      argv[argc++] = "--b=";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "foo") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      /* When flag is non-zero, glibc sets optopt anyway, but BSD
+         leaves optopt unchanged.  */
+      ASSERT (unrecognized == 1 || unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+
+  /* Check that by default, non-options arguments are moved to the end.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "-p") == 0);
+      ASSERT (strcmp (argv[2], "billy") == 0);
+      ASSERT (strcmp (argv[3], "-a") == 0);
+      ASSERT (strcmp (argv[4], "donald") == 0);
+      ASSERT (strcmp (argv[5], "duck") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+
+  /* Check that '--' ends the argument processing.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[20];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "--";
+      argv[argc++] = "-b";
+      argv[argc++] = "foo";
+      argv[argc++] = "-q";
+      argv[argc++] = "johnny";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "-p") == 0);
+      ASSERT (strcmp (argv[2], "billy") == 0);
+      ASSERT (strcmp (argv[3], "-a") == 0);
+      ASSERT (strcmp (argv[4], "--") == 0);
+      ASSERT (strcmp (argv[5], "donald") == 0);
+      ASSERT (strcmp (argv[6], "duck") == 0);
+      ASSERT (strcmp (argv[7], "-b") == 0);
+      ASSERT (strcmp (argv[8], "foo") == 0);
+      ASSERT (strcmp (argv[9], "-q") == 0);
+      ASSERT (strcmp (argv[10], "johnny") == 0);
+      ASSERT (strcmp (argv[11], "bar") == 0);
+      ASSERT (argv[12] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 5);
+    }
+
+  /* Check that the '-' flag causes non-options to be returned in order.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "-abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 3);
+      ASSERT (strcmp (non_options[0], "donald") == 0);
+      ASSERT (strcmp (non_options[1], "duck") == 0);
+      ASSERT (strcmp (non_options[2], "bar") == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 7);
+    }
+
+  /* Check that '--' ends the argument processing.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[20];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "--";
+      argv[argc++] = "-b";
+      argv[argc++] = "foo";
+      argv[argc++] = "-q";
+      argv[argc++] = "johnny";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "-abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "--") == 0);
+      ASSERT (strcmp (argv[7], "-b") == 0);
+      ASSERT (strcmp (argv[8], "foo") == 0);
+      ASSERT (strcmp (argv[9], "-q") == 0);
+      ASSERT (strcmp (argv[10], "johnny") == 0);
+      ASSERT (strcmp (argv[11], "bar") == 0);
+      ASSERT (argv[12] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      if (non_options_count == 2)
+      {
+        /* glibc behaviour.  */
+        ASSERT (non_options_count == 2);
+        ASSERT (strcmp (non_options[0], "donald") == 0);
+        ASSERT (strcmp (non_options[1], "duck") == 0);
+        ASSERT (unrecognized == 0);
+        ASSERT (optind == 7);
+      }
+      else
+      {
+        /* Another valid behaviour.  */
+        ASSERT (non_options_count == 7);
+        ASSERT (strcmp (non_options[0], "donald") == 0);
+        ASSERT (strcmp (non_options[1], "duck") == 0);
+        ASSERT (strcmp (non_options[2], "-b") == 0);
+        ASSERT (strcmp (non_options[3], "foo") == 0);
+        ASSERT (strcmp (non_options[4], "-q") == 0);
+        ASSERT (strcmp (non_options[5], "johnny") == 0);
+        ASSERT (strcmp (non_options[6], "bar") == 0);
+        ASSERT (unrecognized == 0);
+        ASSERT (optind == 12);
+      }
+    }
+
+  /* Check that the '-' flag has to come first.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:-", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "-p") == 0);
+      ASSERT (strcmp (argv[2], "billy") == 0);
+      ASSERT (strcmp (argv[3], "-a") == 0);
+      ASSERT (strcmp (argv[4], "donald") == 0);
+      ASSERT (strcmp (argv[5], "duck") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+
+  /* Check that the '+' flag causes the first non-option to terminate the
+     loop.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "+abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 1);
+    }
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-+";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "+abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == '+');
+      ASSERT (optind == 2);
+    }
+
+  /* Check that '--' ends the argument processing.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[20];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "--";
+      argv[argc++] = "-b";
+      argv[argc++] = "foo";
+      argv[argc++] = "-q";
+      argv[argc++] = "johnny";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "+abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "--") == 0);
+      ASSERT (strcmp (argv[7], "-b") == 0);
+      ASSERT (strcmp (argv[8], "foo") == 0);
+      ASSERT (strcmp (argv[9], "-q") == 0);
+      ASSERT (strcmp (argv[10], "johnny") == 0);
+      ASSERT (strcmp (argv[11], "bar") == 0);
+      ASSERT (argv[12] == NULL);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 1);
+    }
+
+  /* Check that the '+' flag has to come first.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:+", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "-p") == 0);
+      ASSERT (strcmp (argv[2], "billy") == 0);
+      ASSERT (strcmp (argv[3], "-a") == 0);
+      ASSERT (strcmp (argv[4], "donald") == 0);
+      ASSERT (strcmp (argv[5], "duck") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value != NULL && strcmp (p_value, "billy") == 0);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+}
+
+/* Test behavior of getopt_long when POSIXLY_CORRECT is set in the
+   environment.  Options with optional arguments should not change
+   behavior just because of an environment variable.
+   https://lists.gnu.org/r/bug-m4/2006-09/msg00028.html  */
+static void
+test_getopt_long_posix (void)
+{
+  int start;
+
+  /* Check that POSIXLY_CORRECT stops parsing the same as leading '+'.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "donald";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc++] = "duck";
+      argv[argc++] = "-a";
+      argv[argc++] = "bar";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "abp:q:", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (strcmp (argv[0], "program") == 0);
+      ASSERT (strcmp (argv[1], "donald") == 0);
+      ASSERT (strcmp (argv[2], "-p") == 0);
+      ASSERT (strcmp (argv[3], "billy") == 0);
+      ASSERT (strcmp (argv[4], "duck") == 0);
+      ASSERT (strcmp (argv[5], "-a") == 0);
+      ASSERT (strcmp (argv[6], "bar") == 0);
+      ASSERT (argv[7] == NULL);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 1);
+    }
+
+  /* Check that POSIXLY_CORRECT doesn't change optional arguments.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-p";
+      argv[argc++] = "billy";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "p::", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 0);
+      ASSERT (b_seen == 0);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 2);
+    }
+
+  /* Check that leading - still sees options after non-options.  */
+  for (start = 0; start <= 1; start++)
+    {
+      const char *p_value = NULL;
+      const char *q_value = NULL;
+      int non_options_count = 0;
+      const char *non_options[10];
+      int unrecognized = 0;
+      int argc = 0;
+      const char *argv[10];
+      a_seen = 0;
+      b_seen = 0;
+
+      argv[argc++] = "program";
+      argv[argc++] = "-a";
+      argv[argc++] = "billy";
+      argv[argc++] = "-b";
+      argv[argc] = NULL;
+      optind = start;
+      getopt_long_loop (argc, argv, "-ab", long_options_required,
+                        &p_value, &q_value,
+                        &non_options_count, non_options, &unrecognized);
+      ASSERT (a_seen == 1);
+      ASSERT (b_seen == 1);
+      ASSERT (p_value == NULL);
+      ASSERT (q_value == NULL);
+      ASSERT (non_options_count == 1);
+      ASSERT (strcmp (non_options[0], "billy") == 0);
+      ASSERT (unrecognized == 0);
+      ASSERT (optind == 4);
+    }
+}
+
+/* Reduce casting, so we can use string literals elsewhere.
+   getopt_long_only takes an array of char*, but luckily does not
+   modify those elements, so we can pass const char*.  */
+static int
+do_getopt_long_only (int argc, const char **argv, const char *shortopts,
+                     const struct option *longopts, int *longind)
+{
+  return getopt_long_only (argc, (char **) argv, shortopts, longopts, longind);
+}
+
+static void
+test_getopt_long_only (void)
+{
+  /* Test disambiguation of options.  */
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-x";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "ab", long_options_required,
+                             &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-x";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "abx", long_options_required,
+                             &option_index);
+    ASSERT (c == 'x');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--x";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "abx", long_options_required,
+                             &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-b";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    b_seen = 0;
+    c = do_getopt_long_only (argc, argv, "abx", long_options_required,
+                             &option_index);
+    ASSERT (c == 'b');
+    ASSERT (b_seen == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "--b";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    b_seen = 0;
+    c = do_getopt_long_only (argc, argv, "abx", long_options_required,
+                             &option_index);
+    ASSERT (c == 0);
+    ASSERT (b_seen == 1);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xt";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "ab", long_options_required,
+                             &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xt";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "abx", long_options_required,
+                             &option_index);
+    ASSERT (c == '?');
+    ASSERT (optopt == 0);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xtra";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "ab", long_options_required,
+                             &option_index);
+    ASSERT (c == 1001);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xtreme";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "abx:", long_options_required,
+                             &option_index);
+    ASSERT (c == 1002);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xtremel";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "ab", long_options_required,
+                             &option_index);
+    /* glibc getopt_long_only is intentionally different from
+       getopt_long when handling a prefix that is common to two
+       spellings, when both spellings have the same option directives.
+       BSD getopt_long_only treats both cases the same.  */
+    ASSERT (c == 1003 || c == '?');
+    ASSERT (optind == 2);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xtremel";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "abx::", long_options_required,
+                             &option_index);
+    /* glibc getopt_long_only is intentionally different from
+       getopt_long when handling a prefix that is common to two
+       spellings, when both spellings have the same option directives.
+       BSD getopt_long_only treats both cases the same.  */
+    ASSERT (c == 1003 || c == '?');
+    ASSERT (optind == 2);
+    ASSERT (optarg == NULL);
+  }
+  {
+    int argc = 0;
+    const char *argv[10];
+    int option_index;
+    int c;
+
+    argv[argc++] = "program";
+    argv[argc++] = "-xtras";
+    argv[argc] = NULL;
+    optind = 1;
+    opterr = 0;
+    c = do_getopt_long_only (argc, argv, "abx::", long_options_required,
+                             &option_index);
+    ASSERT (c == 'x');
+    ASSERT (strcmp (optarg, "tras") == 0);
+  }
+}
diff --git a/src/grep/gnulib-tests/test-getprogname.c b/src/grep/gnulib-tests/test-getprogname.c
new file mode 100644
index 0000000..21eb338
--- /dev/null
+++ b/src/grep/gnulib-tests/test-getprogname.c
@@ -0,0 +1,58 @@
+/* Test the gnulib getprogname module.
+   Copyright (C) 2016-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "getprogname.h"
+#include <string.h>
+#include <assert.h>
+
+#ifdef __hpux
+# define STREQ(a, b) (strncmp (a, b, 14) == 0)
+#else
+# define STREQ(a, b) (strcmp (a, b) == 0)
+#endif
+
+int
+main (void)
+{
+  char const *p = getprogname ();
+
+  /* libtool creates a temporary executable whose name is sometimes prefixed
+     with "lt-" (depends on the platform).  But the name of the temporary
+     executable is a detail that should not be visible to the end user and to
+     the test suite.  Remove this "lt-" prefix here.  */
+  if (strncmp (p, "lt-", 3) == 0)
+    p += 3;
+
+  /* Note: You can make this test fail
+     a) by running it on a case-insensitive file system (such as on Windows,
+        Cygwin, or on Mac OS X with a case-insensitive HFS+ file system),
+        with an invocation that contains upper case characters, e.g.
+        test-GETPROGNAME,
+     b) by hardlinking or symlinking it to a different name (e.g. test-foo)
+        and invoking it through that name.
+     That's not the intended use. The Makefile always invokes it as
+     'test-getprogname${EXEEXT}'. */
+#if defined __CYGWIN__
+  /* The Cygwin getprogname() function strips the ".exe" suffix. */
+  assert (STREQ (p, "test-getprogname"));
+#else
+  assert (STREQ (p, "test-getprogname" EXEEXT));
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-gettimeofday.c b/src/grep/gnulib-tests/test-gettimeofday.c
new file mode 100644
index 0000000..f9139d0
--- /dev/null
+++ b/src/grep/gnulib-tests/test-gettimeofday.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2005, 2007, 2009-2021 Free Software Foundation, Inc.
+ * Written by Jim Meyering.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/time.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (gettimeofday, int,
+                 (struct timeval *, GETTIMEOFDAY_TIMEZONE *));
+
+#include <time.h>
+
+#include <stdio.h>
+#include <string.h>
+
+int
+main (void)
+{
+  time_t t = 0;
+  struct tm *lt;
+  struct tm saved_lt;
+  struct timeval tv;
+  lt = localtime (&t);
+  saved_lt = *lt;
+  gettimeofday (&tv, NULL);
+  if (memcmp (lt, &saved_lt, sizeof (struct tm)) != 0)
+    {
+      fprintf (stderr, "gettimeofday still clobbers the localtime buffer!\n");
+      return 1;
+    }
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-hard-locale.c b/src/grep/gnulib-tests/test-hard-locale.c
new file mode 100644
index 0000000..ff29b36
--- /dev/null
+++ b/src/grep/gnulib-tests/test-hard-locale.c
@@ -0,0 +1,109 @@
+/* Test of determination whether a locale is different from the "C" locale.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+#include "hard-locale.h"
+
+#include <locale.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+/* True if all locale names are accepted and all locales are trivial.
+   This is the case e.g. on OpenBSD 3.8.  */
+static bool all_trivial;
+
+static int
+test_one (const char *name, int failure_bitmask)
+{
+  if (setlocale (LC_ALL, name) != NULL)
+    {
+      bool expected;
+
+      /* musl libc has special code for the C.UTF-8 locale; other than that,
+         all locale names are accepted and all locales are trivial.
+         OpenBSD returns the locale name that was set, but we don't know how it
+         behaves under the hood.  Likewise for Haiku.  */
+#if defined MUSL_LIBC || defined __OpenBSD__ || defined __HAIKU__
+      expected = true;
+#else
+      expected = !all_trivial;
+#endif
+      if (hard_locale (LC_CTYPE) != expected)
+        {
+          if (expected)
+            fprintf (stderr, "Unexpected: The category LC_CTYPE of the locale '%s' is not equivalent to C or POSIX.\n",
+                     name);
+          else
+            fprintf (stderr, "Unexpected: The category LC_CTYPE of the locale '%s' is equivalent to C or POSIX.\n",
+                     name);
+          return failure_bitmask;
+        }
+
+      /* On NetBSD 7.0, some locales such as de_DE.ISO8859-1 and de_DE.UTF-8
+         have the LC_COLLATE category set to "C".
+         Similarly, on musl libc, with the C.UTF-8 locale.  */
+#if defined __NetBSD__
+      expected = false;
+#elif defined MUSL_LIBC
+      expected = strcmp (name, "C.UTF-8") != 0;
+#elif (defined __OpenBSD__ && HAVE_DUPLOCALE) || defined __HAIKU__ /* OpenBSD >= 6.2, Haiku */
+      expected = true;
+#else
+      expected = !all_trivial;
+#endif
+      if (hard_locale (LC_COLLATE) != expected)
+        {
+          if (expected)
+            fprintf (stderr, "Unexpected: The category LC_COLLATE of the locale '%s' is not equivalent to C or POSIX.\n",
+                     name);
+          else
+            fprintf (stderr, "Unexpected: The category LC_COLLATE of the locale '%s' is equivalent to C or POSIX.\n",
+                     name);
+          return failure_bitmask;
+        }
+    }
+  return 0;
+}
+
+int
+main ()
+{
+  int fail = 0;
+
+  /* The initial locale is the "C" or "POSIX" locale.  */
+  if (hard_locale (LC_CTYPE) || hard_locale (LC_COLLATE))
+    {
+      fprintf (stderr, "The initial locale should not be hard!\n");
+      fail |= 1;
+    }
+
+  all_trivial = (setlocale (LC_ALL, "foobar") != NULL);
+
+  fail |= test_one ("de", 2);
+  fail |= test_one ("de_DE", 4);
+  fail |= test_one ("de_DE.ISO8859-1", 8);
+  fail |= test_one ("de_DE.iso88591", 8);
+  fail |= test_one ("de_DE.UTF-8", 16);
+  fail |= test_one ("de_DE.utf8", 16);
+  fail |= test_one ("german", 32);
+  fail |= test_one ("C.UTF-8", 64);
+
+  return fail;
+}
diff --git a/src/grep/gnulib-tests/test-hash.c b/src/grep/gnulib-tests/test-hash.c
new file mode 100644
index 0000000..4e8c59f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-hash.c
@@ -0,0 +1,263 @@
+/*
+ * Copyright (C) 2009-2021 Free Software Foundation, Inc.
+ * Written by Jim Meyering
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "hash.h"
+#include "hash-pjw.h"
+#include "inttostr.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define STREQ(a, b) (strcmp (a, b) == 0)
+#define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array))
+
+static bool
+hash_compare_strings (void const *x, void const *y)
+{
+  ASSERT (x != y);
+  return STREQ (x, y) ? true : false;
+}
+
+static void
+hash_freer (void *x)
+{
+  free (x);
+}
+
+static void
+insert_new (Hash_table *ht, const void *ent)
+{
+  void *e = hash_insert (ht, ent);
+  ASSERT (e == ent);
+}
+
+static bool
+walk (void *ent, void *data)
+{
+  char *str = ent;
+  unsigned int *map = data;
+  switch (*str)
+    {
+    case 'a': *map |= 1; return true;
+    case 'b': *map |= 2; return true;
+    case 'c': *map |= 4; return true;
+    }
+  *map |= 8;
+  return false;
+}
+
+static int
+get_seed (char const *str, unsigned int *seed)
+{
+  size_t len = strlen (str);
+  if (len == 0 || strspn (str, "0123456789") != len || 10 < len)
+    return 1;
+
+  *seed = atoi (str);
+  return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+  unsigned int i;
+  unsigned int k;
+  unsigned int table_size[] = {1, 2, 3, 4, 5, 23, 53};
+  Hash_table *ht;
+  Hash_tuning tuning;
+
+  hash_reset_tuning (&tuning);
+  tuning.shrink_threshold = 0.3;
+  tuning.shrink_factor = 0.707;
+  tuning.growth_threshold = 1.5;
+  tuning.growth_factor = 2.0;
+  tuning.is_n_buckets = true;
+
+  if (1 < argc)
+    {
+      unsigned int seed;
+      if (get_seed (argv[1], &seed) != 0)
+        {
+          fprintf (stderr, "invalid seed: %s\n", argv[1]);
+          exit (EXIT_FAILURE);
+        }
+
+      srand (seed);
+    }
+
+  for (i = 0; i < ARRAY_CARDINALITY (table_size); i++)
+    {
+      size_t sz = table_size[i];
+      ht = hash_initialize (sz, NULL, hash_pjw, hash_compare_strings, NULL);
+      ASSERT (ht);
+      insert_new (ht, "a");
+      {
+        char *str1 = strdup ("a");
+        char *str2;
+        ASSERT (str1);
+        str2 = hash_insert (ht, str1);
+        ASSERT (str1 != str2);
+        ASSERT (STREQ (str1, str2));
+        free (str1);
+      }
+      insert_new (ht, "b");
+      insert_new (ht, "c");
+      i = 0;
+      ASSERT (hash_do_for_each (ht, walk, &i) == 3);
+      ASSERT (i == 7);
+      {
+        void *buf[5] = { NULL };
+        ASSERT (hash_get_entries (ht, NULL, 0) == 0);
+        ASSERT (hash_get_entries (ht, buf, 5) == 3);
+        ASSERT (STREQ (buf[0], "a") || STREQ (buf[0], "b") || STREQ (buf[0], "c"));
+      }
+      ASSERT (hash_remove (ht, "a"));
+      ASSERT (hash_remove (ht, "a") == NULL);
+      ASSERT (hash_remove (ht, "b"));
+      ASSERT (hash_remove (ht, "c"));
+
+      ASSERT (hash_rehash (ht, 47));
+      ASSERT (hash_rehash (ht, 467));
+
+      /* Free an empty table. */
+      hash_clear (ht);
+      hash_free (ht);
+
+      ht = hash_initialize (sz, NULL, hash_pjw, hash_compare_strings, NULL);
+      ASSERT (ht);
+
+      insert_new (ht, "z");
+      insert_new (ht, "y");
+      insert_new (ht, "x");
+      insert_new (ht, "w");
+      insert_new (ht, "v");
+      insert_new (ht, "u");
+
+      hash_clear (ht);
+      ASSERT (hash_get_n_entries (ht) == 0);
+      hash_free (ht);
+
+      /* Test pointer hashing.  */
+      ht = hash_initialize (sz, NULL, NULL, NULL, NULL);
+      ASSERT (ht);
+      {
+        char *str = strdup ("a");
+        ASSERT (str);
+        insert_new (ht, "a");
+        insert_new (ht, str);
+        ASSERT (hash_lookup (ht, str) == str);
+        free (str);
+      }
+      hash_free (ht);
+    }
+
+  hash_reset_tuning (&tuning);
+  tuning.shrink_threshold = 0.3;
+  tuning.shrink_factor = 0.707;
+  tuning.growth_threshold = 1.5;
+  tuning.growth_factor = 2.0;
+  tuning.is_n_buckets = true;
+  /* Invalid tuning.  */
+  ht = hash_initialize (4651, &tuning, hash_pjw, hash_compare_strings,
+                        hash_freer);
+  ASSERT (!ht);
+
+  /* Alternate tuning.  */
+  tuning.growth_threshold = 0.89;
+
+  /* Run with default tuning, then with custom tuning settings.  */
+  for (k = 0; k < 2; k++)
+    {
+      Hash_tuning const *tune = (k == 0 ? NULL : &tuning);
+      /* Now, each entry is malloc'd.  */
+      ht = hash_initialize (4651, tune, hash_pjw,
+                            hash_compare_strings, hash_freer);
+      ASSERT (ht);
+      for (i = 0; i < 10000; i++)
+        {
+          unsigned int op = rand () % 10;
+          switch (op)
+            {
+            case 0:
+            case 1:
+            case 2:
+            case 3:
+            case 4:
+            case 5:
+              {
+                char buf[50];
+                char const *p = uinttostr (i, buf);
+                char *p_dup = strdup (p);
+                ASSERT (p_dup);
+                insert_new (ht, p_dup);
+              }
+              break;
+
+            case 6:
+              {
+                size_t n = hash_get_n_entries (ht);
+                ASSERT (hash_rehash (ht, n + rand () % 20));
+              }
+              break;
+
+            case 7:
+              {
+                size_t n = hash_get_n_entries (ht);
+                size_t delta = rand () % 20;
+                if (delta < n)
+                  ASSERT (hash_rehash (ht, n - delta));
+              }
+              break;
+
+            case 8:
+            case 9:
+              {
+                /* Delete a random entry.  */
+                size_t n = hash_get_n_entries (ht);
+                if (n)
+                  {
+                    size_t kk = rand () % n;
+                    void const *p;
+                    void *v;
+                    for (p = hash_get_first (ht); kk;
+                         --kk, p = hash_get_next (ht, p))
+                      {
+                        /* empty */
+                      }
+                    ASSERT (p);
+                    v = hash_remove (ht, p);
+                    ASSERT (v);
+                    free (v);
+                  }
+                break;
+              }
+            }
+          ASSERT (hash_table_ok (ht));
+        }
+
+      hash_free (ht);
+    }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-i-ring.c b/src/grep/gnulib-tests/test-i-ring.c
new file mode 100644
index 0000000..9a73541
--- /dev/null
+++ b/src/grep/gnulib-tests/test-i-ring.c
@@ -0,0 +1,63 @@
+/* Test the simple ring buffer.
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#include <config.h>
+
+#include "i-ring.h"
+
+#include "macros.h"
+
+int
+main (void)
+{
+  int o;
+  I_ring ir;
+  i_ring_init (&ir, -1);
+  o = i_ring_push (&ir, 1);
+  ASSERT (o == -1);
+  o = i_ring_push (&ir, 2);
+  ASSERT (o == -1);
+  o = i_ring_push (&ir, 3);
+  ASSERT (o == -1);
+  o = i_ring_push (&ir, 4);
+  ASSERT (o == -1);
+  o = i_ring_push (&ir, 5);
+  ASSERT (o == 1);
+  o = i_ring_push (&ir, 6);
+  ASSERT (o == 2);
+  o = i_ring_push (&ir, 7);
+  ASSERT (o == 3);
+
+  o = i_ring_pop (&ir);
+  ASSERT (o == 7);
+  o = i_ring_pop (&ir);
+  ASSERT (o == 6);
+  o = i_ring_pop (&ir);
+  ASSERT (o == 5);
+  o = i_ring_pop (&ir);
+  ASSERT (o == 4);
+  ASSERT (i_ring_empty (&ir));
+
+  o = i_ring_push (&ir, 8);
+  ASSERT (o == -1);
+  o = i_ring_pop (&ir);
+  ASSERT (o == 8);
+  ASSERT (i_ring_empty (&ir));
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-iconv-h.c b/src/grep/gnulib-tests/test-iconv-h.c
new file mode 100644
index 0000000..bba7fe3
--- /dev/null
+++ b/src/grep/gnulib-tests/test-iconv-h.c
@@ -0,0 +1,27 @@
+/* Test of <iconv.h> substitute.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#if HAVE_ICONV
+# include <iconv.h>
+#endif
+
+int
+main ()
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-iconv.c b/src/grep/gnulib-tests/test-iconv.c
new file mode 100644
index 0000000..f35113f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-iconv.c
@@ -0,0 +1,159 @@
+/* Test of character set conversion.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#if HAVE_ICONV
+# include <iconv.h>
+
+# ifndef ICONV_CONST
+#  define ICONV_CONST /* empty */
+# endif
+
+#include "signature.h"
+SIGNATURE_CHECK (iconv, size_t, (iconv_t, ICONV_CONST char **, size_t *,
+                                 char **, size_t *));
+SIGNATURE_CHECK (iconv_close, int, (iconv_t x));
+SIGNATURE_CHECK (iconv_open, iconv_t, (char const *, char const *));
+
+#endif
+
+#include <errno.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+#if HAVE_ICONV
+  /* Assume that iconv() supports at least the encodings ASCII, ISO-8859-1,
+     and UTF-8.  */
+  iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1");
+  iconv_t cd_utf8_to_88591 = iconv_open ("ISO-8859-1", "UTF-8");
+
+#if defined __MVS__ && defined __IBMC__
+  /* String literals below are in ASCII, not EBCDIC.  */
+# pragma convert("ISO8859-1")
+# define CONVERT_ENABLED
+#endif
+
+  ASSERT (cd_88591_to_utf8 != (iconv_t)(-1));
+  ASSERT (cd_utf8_to_88591 != (iconv_t)(-1));
+
+  /* Test conversion from ISO-8859-1 to UTF-8 with no errors.  */
+  {
+    static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    static const char expected[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    char buf[50];
+    const char *inptr = input;
+    size_t inbytesleft = strlen (input);
+    char *outptr = buf;
+    size_t outbytesleft = sizeof (buf);
+    size_t res = iconv (cd_88591_to_utf8,
+                        (ICONV_CONST char **) &inptr, &inbytesleft,
+                        &outptr, &outbytesleft);
+    ASSERT (res == 0 && inbytesleft == 0);
+    ASSERT (outptr == buf + strlen (expected));
+    ASSERT (memcmp (buf, expected, strlen (expected)) == 0);
+  }
+
+  /* Test conversion from ISO-8859-1 to UTF-8 with E2BIG.  */
+  {
+    static const char input[] = "\304";
+    static char buf[2] = { (char)0xDE, (char)0xAD };
+    const char *inptr = input;
+    size_t inbytesleft = 1;
+    char *outptr = buf;
+    size_t outbytesleft = 1;
+    size_t res = iconv (cd_88591_to_utf8,
+                        (ICONV_CONST char **) &inptr, &inbytesleft,
+                        &outptr, &outbytesleft);
+    ASSERT (res == (size_t)(-1) && errno == E2BIG);
+    ASSERT (inbytesleft == 1);
+    ASSERT (outbytesleft == 1);
+    ASSERT ((unsigned char) buf[1] == 0xAD);
+    ASSERT ((unsigned char) buf[0] == 0xDE);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with no errors.  */
+  {
+    static const char input[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    static const char expected[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    char buf[50];
+    const char *inptr = input;
+    size_t inbytesleft = strlen (input);
+    char *outptr = buf;
+    size_t outbytesleft = sizeof (buf);
+    size_t res = iconv (cd_utf8_to_88591,
+                        (ICONV_CONST char **) &inptr, &inbytesleft,
+                        &outptr, &outbytesleft);
+    ASSERT (res == 0 && inbytesleft == 0);
+    ASSERT (outptr == buf + strlen (expected));
+    ASSERT (memcmp (buf, expected, strlen (expected)) == 0);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EILSEQ.  */
+  {
+    static const char input[] = "\342\202\254"; /* EURO SIGN */
+    char buf[10];
+    const char *inptr = input;
+    size_t inbytesleft = strlen (input);
+    char *outptr = buf;
+    size_t outbytesleft = sizeof (buf);
+    size_t res = iconv (cd_utf8_to_88591,
+                        (ICONV_CONST char **) &inptr, &inbytesleft,
+                        &outptr, &outbytesleft);
+    if (res == (size_t)(-1))
+      {
+        ASSERT (errno == EILSEQ);
+        ASSERT (inbytesleft == strlen (input) && outptr == buf);
+      }
+    else
+      {
+        ASSERT (res == 1);
+        ASSERT (inbytesleft == 0);
+      }
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EINVAL.  */
+  {
+    static const char input[] = "\342";
+    char buf[10];
+    const char *inptr = input;
+    size_t inbytesleft = 1;
+    char *outptr = buf;
+    size_t outbytesleft = sizeof (buf);
+    size_t res = iconv (cd_utf8_to_88591,
+                        (ICONV_CONST char **) &inptr, &inbytesleft,
+                        &outptr, &outbytesleft);
+    ASSERT (res == (size_t)(-1) && errno == EINVAL);
+    ASSERT (inbytesleft == 1 && outptr == buf);
+  }
+
+  iconv_close (cd_88591_to_utf8);
+  iconv_close (cd_utf8_to_88591);
+
+#ifdef CONVERT_ENABLED
+# pragma convert(pop)
+#endif
+
+#endif /* HAVE_ICONV */
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-ignore-value.c b/src/grep/gnulib-tests/test-ignore-value.c
new file mode 100644
index 0000000..6191d7d
--- /dev/null
+++ b/src/grep/gnulib-tests/test-ignore-value.c
@@ -0,0 +1,78 @@
+/* Test the "ignore-value" module.
+
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake.  */
+
+#include <config.h>
+
+#include "ignore-value.h"
+
+#include <stdio.h>
+
+#include "attribute.h"
+
+struct s { int i; };
+NODISCARD static char doChar (void);
+NODISCARD static int doInt (void);
+NODISCARD static off_t doOff (void);
+NODISCARD static void *doPtr (void);
+NODISCARD static struct s doStruct (void);
+
+static char
+doChar (void)
+{
+  return 0;
+}
+
+static int
+doInt (void)
+{
+  return 0;
+}
+
+static off_t
+doOff (void)
+{
+  return 0;
+}
+
+static void *
+doPtr (void)
+{
+  return NULL;
+}
+
+static struct s
+doStruct (void)
+{
+  static struct s s1;
+  return s1;
+}
+
+int
+main (void)
+{
+  /* If this test can compile with -Werror and the same warnings as
+     the rest of the project, then we are properly silencing warnings
+     about ignored return values.  */
+  ignore_value (doChar ());
+  ignore_value (doInt ());
+  ignore_value (doOff ());
+  ignore_value (doPtr ());
+  ignore_value (doStruct ());
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-inet_pton.c b/src/grep/gnulib-tests/test-inet_pton.c
new file mode 100644
index 0000000..9d2e50f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-inet_pton.c
@@ -0,0 +1,58 @@
+/* Test of inet_pton function.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <arpa/inet.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (inet_pton, int, (int, const char *, void *));
+
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+#if defined AF_INET /* HAVE_IPV4 */
+  {
+    /* This machine was for a long time known as
+       ma2s2.mathematik.uni-karlsruhe.de.  */
+    const char printable[] = "129.13.115.2";
+    struct in_addr internal;
+    int ret;
+
+    ret = inet_pton (AF_INET, printable, &internal);
+    ASSERT (ret == 1);
+    /* Verify that internal is filled in network byte order.  */
+    ASSERT (((unsigned char *) &internal)[0] == 0x81);
+    ASSERT (((unsigned char *) &internal)[1] == 0x0D);
+    ASSERT (((unsigned char *) &internal)[2] == 0x73);
+    ASSERT (((unsigned char *) &internal)[3] == 0x02);
+# ifdef WORDS_BIGENDIAN
+    ASSERT (internal.s_addr == 0x810D7302);
+# else
+    ASSERT (internal.s_addr == 0x02730D81);
+# endif
+  }
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-init.sh b/src/grep/gnulib-tests/test-init.sh
new file mode 100755
index 0000000..7b8c451
--- /dev/null
+++ b/src/grep/gnulib-tests/test-init.sh
@@ -0,0 +1,74 @@
+#!/bin/sh
+# Unit tests for init.sh
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+fail=0
+
+test_compare()
+{
+  touch empty || fail=1
+  echo xyz > in || fail=1
+
+  compare /dev/null /dev/null >out 2>err || fail=1
+  test -s out && fail_ "out not empty: $(cat out)"
+  # "err" should be empty, too, but has "set -x" output when VERBOSE=yes
+  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
+
+  compare /dev/null empty >out 2>err || fail=1
+  test -s out && fail_ "out not empty: $(cat out)"
+  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
+
+  compare in in >out 2>err || fail=1
+  test -s out && fail_ "out not empty: $(cat out)"
+  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
+
+  compare /dev/null in >out 2>err && fail=1
+  cat <<\EOF > exp
+diff -u /dev/null in
+--- /dev/null	1970-01-01
++++ in	1970-01-01
++xyz
+EOF
+  compare exp out || fail=1
+  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
+
+  compare empty in >out 2>err && fail=1
+  # Compare against expected output only if compare is using diff -u.
+  if grep @ out >/dev/null; then
+    # Remove the TAB-date suffix on each --- and +++ line,
+    # for both the expected and the actual output files.
+    # Also remove the @@ line, since Solaris 5.10 and GNU diff formats differ:
+    # -@@ -0,0 +1 @@
+    # +@@ -1,0 +1,1 @@
+    # Also, remove space after leading '+', since AIX 7.1 diff outputs a space.
+    sed 's/	.*//;/^@@/d;s/^+ /+/' out > k && mv k out
+    cat <<\EOF > exp
+--- empty
++++ in
++xyz
+EOF
+    compare exp out || fail=1
+  fi
+  case $- in *x*) ;; *) test -s err && fail_ "err not empty: $(cat err)";; esac
+}
+
+test_compare
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-intprops.c b/src/grep/gnulib-tests/test-intprops.c
new file mode 100644
index 0000000..fff4218
--- /dev/null
+++ b/src/grep/gnulib-tests/test-intprops.c
@@ -0,0 +1,441 @@
+/* Test intprops.h.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+/* Tell gcc not to warn about the long expressions that the overflow
+   macros expand to, or about the (X < 0) expressions.  */
+#if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
+# pragma GCC diagnostic ignored "-Woverlength-strings"
+# pragma GCC diagnostic ignored "-Wtype-limits"
+
+/* Work around a bug in GCC 6.1 and earlier; see:
+   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68971  */
+# pragma GCC diagnostic ignored "-Woverflow"
+
+#endif
+
+#include <config.h>
+
+#include "intprops.h"
+#include "verify.h"
+
+#include <stdbool.h>
+#include <inttypes.h>
+#include <limits.h>
+
+#include "macros.h"
+
+/* Compile-time verification of expression X.
+   In this file, we need it as a statement, rather than as a declaration.  */
+#define verify_stmt(x) do { verify (x); } while (0)
+
+/* VERIFY (X) uses a static assertion for compilers that are known to work,
+   and falls back on a dynamic assertion for other compilers.
+   These tests should be checkable via 'verify' rather than 'ASSERT', but
+   using 'verify' would run into a bug with HP-UX 11.23 cc; see
+   <https://lists.gnu.org/r/bug-gnulib/2011-05/msg00401.html>.  */
+#if __GNUC__ || __clang__ || __SUNPRO_C
+# define VERIFY(x) verify_stmt (x)
+#else
+# define VERIFY(x) ASSERT (x)
+#endif
+
+#define DONTCARE __LINE__
+
+int int_minus_2 = -2;
+int int_1 = 1;
+
+int
+main (void)
+{
+  /* Use VERIFY for tests that must be integer constant expressions,
+     ASSERT otherwise.  */
+
+  /* TYPE_IS_INTEGER.  */
+  ASSERT (TYPE_IS_INTEGER (bool));
+  ASSERT (TYPE_IS_INTEGER (char));
+  ASSERT (TYPE_IS_INTEGER (signed char));
+  ASSERT (TYPE_IS_INTEGER (unsigned char));
+  ASSERT (TYPE_IS_INTEGER (short int));
+  ASSERT (TYPE_IS_INTEGER (unsigned short int));
+  ASSERT (TYPE_IS_INTEGER (int));
+  ASSERT (TYPE_IS_INTEGER (unsigned int));
+  ASSERT (TYPE_IS_INTEGER (long int));
+  ASSERT (TYPE_IS_INTEGER (unsigned long int));
+  ASSERT (TYPE_IS_INTEGER (intmax_t));
+  ASSERT (TYPE_IS_INTEGER (uintmax_t));
+  ASSERT (! TYPE_IS_INTEGER (float));
+  ASSERT (! TYPE_IS_INTEGER (double));
+  ASSERT (! TYPE_IS_INTEGER (long double));
+
+  /* TYPE_SIGNED.  */
+  /* VERIFY (! TYPE_SIGNED (bool)); // not guaranteed by gnulib substitute */
+  VERIFY (TYPE_SIGNED (signed char));
+  VERIFY (! TYPE_SIGNED (unsigned char));
+  VERIFY (TYPE_SIGNED (short int));
+  VERIFY (! TYPE_SIGNED (unsigned short int));
+  VERIFY (TYPE_SIGNED (int));
+  VERIFY (! TYPE_SIGNED (unsigned int));
+  VERIFY (TYPE_SIGNED (long int));
+  VERIFY (! TYPE_SIGNED (unsigned long int));
+  VERIFY (TYPE_SIGNED (intmax_t));
+  VERIFY (! TYPE_SIGNED (uintmax_t));
+  ASSERT (TYPE_SIGNED (float));
+  ASSERT (TYPE_SIGNED (double));
+  ASSERT (TYPE_SIGNED (long double));
+
+  /* Integer representation.  Check that it is two's complement.  */
+  VERIFY (INT_MIN + INT_MAX < 0);
+
+  /* TYPE_MINIMUM, TYPE_MAXIMUM.  */
+  VERIFY (TYPE_MINIMUM (char) == CHAR_MIN);
+  VERIFY (TYPE_MAXIMUM (char) == CHAR_MAX);
+  VERIFY (TYPE_MINIMUM (unsigned char) == 0);
+  VERIFY (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX);
+  VERIFY (TYPE_MINIMUM (signed char) == SCHAR_MIN);
+  VERIFY (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
+  VERIFY (TYPE_MINIMUM (short int) == SHRT_MIN);
+  VERIFY (TYPE_MAXIMUM (short int) == SHRT_MAX);
+  VERIFY (TYPE_MINIMUM (unsigned short int) == 0);
+  VERIFY (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX);
+  VERIFY (TYPE_MINIMUM (int) == INT_MIN);
+  VERIFY (TYPE_MAXIMUM (int) == INT_MAX);
+  VERIFY (TYPE_MINIMUM (unsigned int) == 0);
+  VERIFY (TYPE_MAXIMUM (unsigned int) == UINT_MAX);
+  VERIFY (TYPE_MINIMUM (long int) == LONG_MIN);
+  VERIFY (TYPE_MAXIMUM (long int) == LONG_MAX);
+  VERIFY (TYPE_MINIMUM (unsigned long int) == 0);
+  VERIFY (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX);
+  #ifdef LLONG_MAX
+   verify_stmt (TYPE_MINIMUM (long long int) == LLONG_MIN);
+   verify_stmt (TYPE_MAXIMUM (long long int) == LLONG_MAX);
+   verify_stmt (TYPE_MINIMUM (unsigned long long int) == 0);
+   verify_stmt (TYPE_MAXIMUM (unsigned long long int) == ULLONG_MAX);
+  #endif
+  VERIFY (TYPE_MINIMUM (intmax_t) == INTMAX_MIN);
+  VERIFY (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX);
+  VERIFY (TYPE_MINIMUM (uintmax_t) == 0);
+  VERIFY (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX);
+
+  /* TYPE_WIDTH.  */
+  #ifdef CHAR_WIDTH
+   verify_stmt (TYPE_WIDTH (char) == CHAR_WIDTH);
+   verify_stmt (TYPE_WIDTH (signed char) == SCHAR_WIDTH);
+   verify_stmt (TYPE_WIDTH (unsigned char) == UCHAR_WIDTH);
+   verify_stmt (TYPE_WIDTH (short int) == SHRT_WIDTH);
+   verify_stmt (TYPE_WIDTH (unsigned short int) == USHRT_WIDTH);
+   verify_stmt (TYPE_WIDTH (int) == INT_WIDTH);
+   verify_stmt (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
+   verify_stmt (TYPE_WIDTH (long int) == LONG_WIDTH);
+   verify_stmt (TYPE_WIDTH (unsigned long int) == ULONG_WIDTH);
+   #ifdef LLONG_WIDTH
+    verify_stmt (TYPE_WIDTH (long long int) == LLONG_WIDTH);
+    verify_stmt (TYPE_WIDTH (unsigned long long int) == ULLONG_WIDTH);
+   #endif
+  #endif
+
+  /* INT_BITS_STRLEN_BOUND.  */
+  VERIFY (INT_BITS_STRLEN_BOUND (1) == 1);
+  VERIFY (INT_BITS_STRLEN_BOUND (2620) == 789);
+
+  /* INT_STRLEN_BOUND, INT_BUFSIZE_BOUND.  */
+  #ifdef INT32_MAX /* POSIX guarantees int32_t; this ports to non-POSIX.  */
+  VERIFY (INT_STRLEN_BOUND (int32_t) == sizeof ("-2147483648") - 1);
+  VERIFY (INT_BUFSIZE_BOUND (int32_t) == sizeof ("-2147483648"));
+  #endif
+  #ifdef INT64_MAX
+  VERIFY (INT_STRLEN_BOUND (int64_t) == sizeof ("-9223372036854775808") - 1);
+  VERIFY (INT_BUFSIZE_BOUND (int64_t) == sizeof ("-9223372036854775808"));
+  #endif
+
+  /* All the INT_<op>_RANGE_OVERFLOW tests are equally valid as
+     INT_<op>_OVERFLOW tests, so define macros to do both.  OP is the
+     operation, OPNAME its symbolic name, A and B its operands, T the
+     result type, V the overflow flag, and VRES the result if V and if
+     two's complement.  CHECK_BINOP is for most binary operatinos,
+     CHECK_SBINOP for binary +, -, * when the result type is signed,
+     and CHECK_UNOP for unary operations.  */
+  #define CHECK_BINOP(op, opname, a, b, t, v, vres)                       \
+    VERIFY (INT_##opname##_RANGE_OVERFLOW (a, b, TYPE_MINIMUM (t),        \
+                                           TYPE_MAXIMUM (t))              \
+            == (v));                                                      \
+    VERIFY (INT_##opname##_OVERFLOW (a, b) == (v))
+  #define CHECK_SBINOP(op, opname, a, b, t, v, vres)                      \
+    CHECK_BINOP(op, opname, a, b, t, v, vres);                            \
+    {                                                                     \
+      t result;                                                           \
+      ASSERT (INT_##opname##_WRAPV (a, b, &result) == (v));               \
+      ASSERT (result == ((v) ? (vres) : ((a) op (b))));                   \
+    }
+  #define CHECK_UNOP(op, opname, a, t, v)                                 \
+    VERIFY (INT_##opname##_RANGE_OVERFLOW (a, TYPE_MINIMUM (t),           \
+                                           TYPE_MAXIMUM (t))              \
+            == (v));                                                      \
+    VERIFY (INT_##opname##_OVERFLOW (a) == (v))
+
+  /* INT_<op>_RANGE_OVERFLOW, INT_<op>_OVERFLOW.  */
+  VERIFY (INT_ADD_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX));
+  VERIFY (INT_ADD_OVERFLOW (INT_MAX, 1));
+
+  CHECK_SBINOP (+, ADD, INT_MAX, 1, int, true, INT_MIN);
+  CHECK_SBINOP (+, ADD, INT_MAX, -1, int, false, INT_MAX - 1);
+  CHECK_SBINOP (+, ADD, INT_MIN, 1, int, false, INT_MIN + 1);
+  CHECK_SBINOP (+, ADD, INT_MIN, -1, int, true, INT_MAX);
+  CHECK_BINOP (+, ADD, UINT_MAX, 1u, unsigned int, true, 0u);
+  CHECK_BINOP (+, ADD, 0u, 1u, unsigned int, false, 1u);
+
+  CHECK_SBINOP (-, SUBTRACT, INT_MAX, 1, int, false, INT_MAX - 1);
+  CHECK_SBINOP (-, SUBTRACT, INT_MAX, -1, int, true, INT_MIN);
+  CHECK_SBINOP (-, SUBTRACT, INT_MIN, 1, int, true, INT_MAX);
+  CHECK_SBINOP (-, SUBTRACT, INT_MIN, -1, int, false, INT_MIN - -1);
+  CHECK_BINOP (-, SUBTRACT, UINT_MAX, 1u, unsigned int, false, UINT_MAX - 1u);
+  CHECK_BINOP (-, SUBTRACT, 0u, 1u, unsigned int, true, 0u - 1u);
+
+  CHECK_UNOP (-, NEGATE, INT_MIN, int, true);
+  CHECK_UNOP (-, NEGATE, 0, int, false);
+  CHECK_UNOP (-, NEGATE, INT_MAX, int, false);
+  CHECK_UNOP (-, NEGATE, 0u, unsigned int, false);
+  CHECK_UNOP (-, NEGATE, 1u, unsigned int, true);
+  CHECK_UNOP (-, NEGATE, UINT_MAX, unsigned int, true);
+
+  CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MAX, int, true, 1);
+  CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MIN, int, true, INT_MIN);
+  CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MAX, int, true, INT_MIN);
+  CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MIN, int, true, 0);
+  CHECK_SBINOP (*, MULTIPLY, -1, INT_MIN, int,
+                INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
+#if !defined __HP_cc
+  CHECK_SBINOP (*, MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX,
+                long int, false, LONG_MIN - LONG_MIN % INT_MAX);
+#endif
+
+  CHECK_BINOP (/, DIVIDE, INT_MIN, -1, int,
+               INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
+  CHECK_BINOP (/, DIVIDE, INT_MAX, 1, int, false, INT_MAX);
+  CHECK_BINOP (/, DIVIDE, (unsigned int) INT_MIN, -1u, unsigned int,
+               false, INT_MIN / -1u);
+
+  CHECK_BINOP (%, REMAINDER, INT_MIN, -1, int, INT_NEGATE_OVERFLOW (INT_MIN), 0);
+  CHECK_BINOP (%, REMAINDER, INT_MAX, 1, int, false, 0);
+  CHECK_BINOP (%, REMAINDER, (unsigned int) INT_MIN, -1u, unsigned int,
+               false, INT_MIN % -1u);
+
+  CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX, 1, unsigned int, true, UINT_MAX << 1);
+  CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2 + 1, 1, unsigned int, true,
+               (UINT_MAX / 2 + 1) << 1);
+  CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2, 1, unsigned int, false,
+               (UINT_MAX / 2) << 1);
+
+  /* INT_<op>_OVERFLOW and INT_<op>_WRAPV with mixed types.  */
+  #define CHECK_SUM(a, b, t, v, vres)                                     \
+    CHECK_SUM1 (a, b, t, v, vres);                                        \
+    CHECK_SUM1 (b, a, t, v, vres)
+  #define CHECK_SUM_WRAPV(a, b, t, v, vres, okres)                        \
+    CHECK_SUM_WRAPV1 (a, b, t, v, vres, okres);                           \
+    CHECK_SUM_WRAPV1 (b, a, t, v, vres, okres)
+  #define CHECK_SUM1(a, b, t, v, vres)                                    \
+    VERIFY (INT_ADD_OVERFLOW (a, b) == (v));                              \
+    CHECK_SUM_WRAPV1 (a, b, t, v, vres, (a) + (b))
+  #define CHECK_SUM_WRAPV1(a, b, t, v, vres, okres)                       \
+    {                                                                     \
+      t result;                                                           \
+      ASSERT (INT_ADD_WRAPV (a, b, &result) == (v));                      \
+      ASSERT (result == ((v) ? (vres) : (okres)));                        \
+    }
+  CHECK_SUM (-1, LONG_MIN, long int, true, LONG_MAX);
+  CHECK_SUM (-1, UINT_MAX, unsigned int, false, DONTCARE);
+  CHECK_SUM (-1L, INT_MIN, long int, INT_MIN == LONG_MIN,
+              INT_MIN == LONG_MIN ? INT_MAX : DONTCARE);
+  CHECK_SUM (0u, -1, unsigned int, true, 0u + -1);
+  CHECK_SUM (0u, 0, unsigned int, false, DONTCARE);
+  CHECK_SUM (0u, 1, unsigned int, false, DONTCARE);
+  CHECK_SUM (1, LONG_MAX, long int, true, LONG_MIN);
+  CHECK_SUM (1, UINT_MAX, unsigned int, true, 0u);
+  CHECK_SUM (1L, INT_MAX, long int, INT_MAX == LONG_MAX,
+              INT_MAX == LONG_MAX ? INT_MIN : DONTCARE);
+  CHECK_SUM (1u, INT_MAX, unsigned int, INT_MAX == UINT_MAX, 1u + INT_MAX);
+  CHECK_SUM (1u, INT_MIN, unsigned int, true, 1u + INT_MIN);
+  CHECK_SUM_WRAPV (-1, 1u, int, false, DONTCARE, 0);
+  CHECK_SUM_WRAPV (-1, 1ul, int, false, DONTCARE, 0);
+  CHECK_SUM_WRAPV (-1l, 1u, int, false, DONTCARE, 0);
+  CHECK_SUM_WRAPV (-100, 1000u, int, false, DONTCARE, 900);
+  CHECK_SUM_WRAPV (INT_MIN, UINT_MAX, int, false, DONTCARE, INT_MAX);
+  CHECK_SUM_WRAPV (1u, INT_MAX, int, true, INT_MIN, DONTCARE);
+  CHECK_SUM_WRAPV (INT_MAX, 1, long int, LONG_MAX <= INT_MAX, INT_MIN,
+                   INT_MAX + 1L);
+  CHECK_SUM_WRAPV (UINT_MAX, 1, long int, LONG_MAX <= UINT_MAX, 0,
+                   UINT_MAX + 1L);
+  CHECK_SUM_WRAPV (INT_MAX, 1, unsigned long int, ULONG_MAX <= INT_MAX, 0,
+                   INT_MAX + 1uL);
+  CHECK_SUM_WRAPV (UINT_MAX, 1, unsigned long int, ULONG_MAX <= UINT_MAX, 0,
+                   UINT_MAX + 1uL);
+
+  {
+    long int result;
+    ASSERT (INT_ADD_WRAPV (1, INT_MAX, &result) == (INT_MAX == LONG_MAX));
+    ASSERT (INT_ADD_WRAPV (-1, INT_MIN, &result) == (INT_MIN == LONG_MIN));
+  }
+
+  #define CHECK_DIFFERENCE(a, b, t, v, vres)                              \
+    VERIFY (INT_SUBTRACT_OVERFLOW (a, b) == (v))
+  #define CHECK_SDIFFERENCE(a, b, t, v, vres)                             \
+    CHECK_DIFFERENCE (a, b, t, v, vres);                                  \
+    CHECK_SDIFFERENCE_WRAPV (a, b, t, v, vres)
+  #define CHECK_SDIFFERENCE_WRAPV(a, b, t, v, vres)                       \
+    {                                                                     \
+      t result;                                                           \
+      ASSERT (INT_SUBTRACT_WRAPV (a, b, &result) == (v));                 \
+      ASSERT (result == ((v) ? (vres) : ((a) - (b))));                    \
+    }
+  CHECK_DIFFERENCE (INT_MAX, 1u, unsigned int, UINT_MAX < INT_MAX - 1,
+                    INT_MAX - 1u);
+  CHECK_DIFFERENCE (UINT_MAX, 1, unsigned int, false, UINT_MAX - 1);
+  CHECK_DIFFERENCE (0u, -1, unsigned int, false, 0u - -1);
+  CHECK_DIFFERENCE (UINT_MAX, -1, unsigned int, true, UINT_MAX - -1);
+  CHECK_DIFFERENCE (INT_MIN, 1u, unsigned int, true, INT_MIN - 1u);
+  CHECK_DIFFERENCE (-1, 0u, unsigned int, true, -1 - 0u);
+  CHECK_SDIFFERENCE (-1, INT_MIN, int, false, -1 - INT_MIN);
+  CHECK_SDIFFERENCE (-1, INT_MAX, int, false, -1 - INT_MAX);
+  CHECK_SDIFFERENCE (0, INT_MIN, int, INT_MIN < -INT_MAX, INT_MIN);
+  CHECK_SDIFFERENCE (0, INT_MAX, int, false, 0 - INT_MAX);
+  CHECK_SDIFFERENCE_WRAPV (-1, 1u, int, false, DONTCARE);
+  CHECK_SDIFFERENCE_WRAPV (-1, 1ul, int, false, DONTCARE);
+  CHECK_SDIFFERENCE_WRAPV (-1l, 1u, int, false, DONTCARE);
+  CHECK_SDIFFERENCE_WRAPV (0u, INT_MAX, int, false, DONTCARE);
+  CHECK_SDIFFERENCE_WRAPV (1u, INT_MIN, int, true, 1u - INT_MIN);
+  {
+    long int result;
+    ASSERT (INT_SUBTRACT_WRAPV (INT_MAX, -1, &result) == (INT_MAX == LONG_MAX));
+    ASSERT (INT_SUBTRACT_WRAPV (INT_MIN, 1, &result) == (INT_MAX == LONG_MAX));
+  }
+
+  #define CHECK_PRODUCT(a, b, t, v, vres)                                 \
+    CHECK_PRODUCT1 (a, b, t, v, vres);                                    \
+    CHECK_PRODUCT1 (b, a, t, v, vres)
+  #define CHECK_SPRODUCT(a, b, t, v, vres)                                \
+    CHECK_SPRODUCT1 (a, b, t, v, vres);                                   \
+    CHECK_SPRODUCT1 (b, a, t, v, vres)
+  #define CHECK_SPRODUCT_WRAPV(a, b, t, v, vres)                          \
+    CHECK_SPRODUCT_WRAPV1 (a, b, t, v, vres);                             \
+    CHECK_SPRODUCT_WRAPV1 (b, a, t, v, vres)
+  #define CHECK_PRODUCT1(a, b, t, v, vres)                                \
+    VERIFY (INT_MULTIPLY_OVERFLOW (a, b) == (v))
+  #define CHECK_SPRODUCT1(a, b, t, v, vres)                               \
+    CHECK_PRODUCT1 (a, b, t, v, vres);                                    \
+    CHECK_SPRODUCT_WRAPV1 (a, b, t, v, vres)
+  #define CHECK_SPRODUCT_WRAPV1(a, b, t, v, vres)                         \
+    {                                                                     \
+      t result;                                                           \
+      ASSERT (INT_MULTIPLY_WRAPV (a, b, &result) == (v));                 \
+      ASSERT (result == ((v) ? (vres) : ((a) * (b))));                    \
+    }
+  CHECK_PRODUCT (-1, 1u, unsigned int, true, -1 * 1u);
+  CHECK_SPRODUCT (-1, INT_MIN, int, INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
+  CHECK_PRODUCT (-1, UINT_MAX, unsigned int, true, -1 * UINT_MAX);
+  CHECK_SPRODUCT (-32768, LONG_MAX / -32768 - 1, long int, true, LONG_MIN);
+  CHECK_SPRODUCT (-12345, LONG_MAX / -12345, long int, false, DONTCARE);
+  CHECK_SPRODUCT (0, -1, int, false, DONTCARE);
+  CHECK_SPRODUCT (0, 0, int, false, DONTCARE);
+  CHECK_PRODUCT (0, 0u, unsigned int, false, DONTCARE);
+  CHECK_SPRODUCT (0, 1, int, false, DONTCARE);
+  CHECK_SPRODUCT (0, INT_MAX, int, false, DONTCARE);
+  CHECK_SPRODUCT (0, INT_MIN, int, false, DONTCARE);
+  CHECK_PRODUCT (0, UINT_MAX, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, -1, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, 0, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, 0u, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, 1, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, INT_MAX, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, INT_MIN, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (0u, UINT_MAX, unsigned int, false, DONTCARE);
+  CHECK_SPRODUCT (1, INT_MAX, int, false, DONTCARE);
+  CHECK_SPRODUCT (1, INT_MIN, int, false, DONTCARE);
+  CHECK_PRODUCT (1, UINT_MAX, unsigned int, false, DONTCARE);
+  CHECK_PRODUCT (1u, INT_MIN, unsigned int, true, 1u * INT_MIN);
+  CHECK_PRODUCT (1u, INT_MAX, unsigned int, UINT_MAX < INT_MAX, 1u * INT_MAX);
+  CHECK_PRODUCT (INT_MAX, UINT_MAX, unsigned int, true, INT_MAX * UINT_MAX);
+  CHECK_PRODUCT (INT_MAX, ULONG_MAX, unsigned long int, true,
+                 INT_MAX * ULONG_MAX);
+#if !defined __HP_cc
+  CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN - 1, long int, true, LONG_MIN);
+  CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN, long int, false, DONTCARE);
+#endif
+  CHECK_PRODUCT (INT_MIN, UINT_MAX, unsigned int, true, INT_MIN * UINT_MAX);
+  CHECK_PRODUCT (INT_MIN, ULONG_MAX, unsigned long int, true,
+                 INT_MIN * ULONG_MAX);
+  CHECK_SPRODUCT_WRAPV (-1, INT_MAX + 1u, int, false, DONTCARE);
+  CHECK_SPRODUCT_WRAPV (-1, 1u, int, false, DONTCARE);
+  CHECK_SPRODUCT (0, ULONG_MAX, int, false, DONTCARE);
+  CHECK_SPRODUCT (0u, LONG_MIN, int, false, DONTCARE);
+  {
+    long int result;
+    ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
+            == (LONG_MAX / INT_MAX < INT_MAX));
+    ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
+            || result == INT_MAX * (long int) INT_MAX);
+    ASSERT (INT_MULTIPLY_WRAPV (INT_MIN, INT_MIN, &result)
+            || result == INT_MIN * (long int) INT_MIN);
+  }
+
+# ifdef LLONG_MAX
+  {
+    long long int result;
+    ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
+            == (LLONG_MAX / LONG_MAX < LONG_MAX));
+    ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
+            || result == LONG_MAX * (long long int) LONG_MAX);
+    ASSERT (INT_MULTIPLY_WRAPV (LONG_MIN, LONG_MIN, &result)
+            || result == LONG_MIN * (long long int) LONG_MIN);
+  }
+# endif
+
+  /* Check for GCC bug 91450.  */
+  {
+    unsigned long long result;
+    ASSERT (INT_MULTIPLY_WRAPV (int_minus_2, int_1, &result) && result == -2);
+  }
+
+  #define CHECK_QUOTIENT(a, b, v) VERIFY (INT_DIVIDE_OVERFLOW (a, b) == (v))
+
+  CHECK_QUOTIENT (INT_MIN, -1L, INT_MIN == LONG_MIN);
+  CHECK_QUOTIENT (INT_MIN, UINT_MAX, false);
+  CHECK_QUOTIENT (INTMAX_MIN, UINTMAX_MAX, false);
+  CHECK_QUOTIENT (INTMAX_MIN, UINT_MAX, false);
+  CHECK_QUOTIENT (-11, 10u, true);
+  CHECK_QUOTIENT (-10, 10u, true);
+  CHECK_QUOTIENT (-9, 10u, false);
+  CHECK_QUOTIENT (11u, -10, true);
+  CHECK_QUOTIENT (10u, -10, true);
+  CHECK_QUOTIENT (9u, -10, false);
+
+  #define CHECK_REMAINDER(a, b, v) VERIFY (INT_REMAINDER_OVERFLOW (a, b) == (v))
+
+  CHECK_REMAINDER (INT_MIN, -1L, INT_MIN == LONG_MIN);
+  CHECK_REMAINDER (-1, UINT_MAX, true);
+  CHECK_REMAINDER ((intmax_t) -1, UINTMAX_MAX, true);
+  CHECK_REMAINDER (INTMAX_MIN, UINT_MAX,
+                   (INTMAX_MAX < UINT_MAX
+                    && - (unsigned int) INTMAX_MIN % UINT_MAX != 0));
+  CHECK_REMAINDER (INT_MIN, ULONG_MAX, INT_MIN % ULONG_MAX != 1);
+  CHECK_REMAINDER (1u, -1, false);
+  CHECK_REMAINDER (37*39u, -39, false);
+  CHECK_REMAINDER (37*39u + 1, -39, true);
+  CHECK_REMAINDER (37*39u - 1, -39, true);
+  CHECK_REMAINDER (LONG_MAX, -INT_MAX, false);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-inttostr.c b/src/grep/gnulib-tests/test-inttostr.c
new file mode 100644
index 0000000..9422ad4
--- /dev/null
+++ b/src/grep/gnulib-tests/test-inttostr.c
@@ -0,0 +1,94 @@
+/* Test inttostr functions, and incidentally, INT_BUFSIZE_BOUND
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "inttostr.h"
+#include "intprops.h"
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+#define STREQ(a, b) (strcmp (a, b) == 0)
+#define IS_TIGHT(T) (_GL_SIGNED_TYPE_OR_EXPR (T) == TYPE_SIGNED (T))
+#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9)
+
+/* Verify that an inttostr function works as advertised.
+   Convert maximum and minimum (per-type, T) values using both snprintf --
+   with a cast to intmax_t or uintmax_t -- and FN, and compare the
+   resulting strings.  Use malloc for the inttostr buffer, so that if
+   we ever exceed the usually-tight INT_BUFSIZE_BOUND, tools like
+   valgrind will detect the failure. */
+#define CK(T, Fn)                                                       \
+  do                                                                    \
+    {                                                                   \
+      char ref[100];                                                    \
+      char *buf = malloc (INT_BUFSIZE_BOUND (T));                       \
+      char const *p;                                                    \
+      ASSERT (buf);                                                     \
+      *buf = '\0';                                                      \
+      ASSERT                                                            \
+        ((TYPE_SIGNED (T)                                               \
+          ? snprintf (ref, sizeof ref, "%jd", (intmax_t) TYPE_MINIMUM (T)) \
+          : snprintf (ref, sizeof ref, "%ju", (uintmax_t) TYPE_MINIMUM (T))) \
+         < sizeof ref);                                                 \
+      ASSERT (STREQ ((p = Fn (TYPE_MINIMUM (T), buf)), ref));           \
+      /* Ensure that INT_BUFSIZE_BOUND is tight for signed types.  */   \
+      ASSERT (! TYPE_SIGNED (T) || (p == buf && *p == '-'));            \
+      ASSERT                                                            \
+        ((TYPE_SIGNED (T)                                               \
+          ? snprintf (ref, sizeof ref, "%jd", (intmax_t) TYPE_MAXIMUM (T)) \
+          : snprintf (ref, sizeof ref, "%ju", (uintmax_t) TYPE_MAXIMUM (T))) \
+         < sizeof ref);                                                 \
+      ASSERT (STREQ ((p = Fn (TYPE_MAXIMUM (T), buf)), ref));           \
+      /* For unsigned types, the bound is not always tight.  */         \
+      ASSERT (! IS_TIGHT (T) || TYPE_SIGNED (T)                         \
+              || (p == buf && ISDIGIT (*p)));                           \
+      free (buf);                                                       \
+    }                                                                   \
+  while (0)
+
+int
+main (void)
+{
+  size_t b_size = 2;
+  char *b = malloc (b_size);
+  ASSERT (b);
+
+  /* Ideally we would rely on the snprintf-posix module, in which case
+     this guard would not be required, but due to limitations in gnulib's
+     implementation (see modules/snprintf-posix), we cannot.  */
+  if (snprintf (b, b_size, "%ju", (uintmax_t) 3) == 1
+      && b[0] == '3' && b[1] == '\0')
+    {
+      CK (int,          inttostr);
+      CK (unsigned int, uinttostr);
+      CK (off_t,        offtostr);
+      CK (uintmax_t,    umaxtostr);
+      CK (intmax_t,     imaxtostr);
+      free (b);
+      return 0;
+    }
+
+  /* snprintf doesn't accept %ju; skip this test.  */
+  free (b);
+  return 77;
+}
diff --git a/src/grep/gnulib-tests/test-inttypes.c b/src/grep/gnulib-tests/test-inttypes.c
new file mode 100644
index 0000000..f7f2e3a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-inttypes.c
@@ -0,0 +1,118 @@
+/* Test of <inttypes.h> substitute.
+   Copyright (C) 2006-2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <inttypes.h>
+
+#include <stddef.h>
+
+/* Tests for macros supposed to be defined in inttypes.h.  */
+
+const char *k = /* implicit string concatenation */
+#ifdef INT8_MAX
+  PRId8 PRIi8
+#endif
+#ifdef UINT8_MAX
+  PRIo8 PRIu8 PRIx8 PRIX8
+#endif
+#ifdef INT16_MAX
+  PRId16 PRIi16
+#endif
+#ifdef UINT16_MAX
+  PRIo16 PRIu16 PRIx16 PRIX16
+#endif
+#ifdef INT32_MAX
+  PRId32 PRIi32
+#endif
+#ifdef UINT32_MAX
+  PRIo32 PRIu32 PRIx32 PRIX32
+#endif
+#ifdef INT64_MAX
+  PRId64 PRIi64
+#endif
+#ifdef UINT64_MAX
+  PRIo64 PRIu64 PRIx64 PRIX64
+#endif
+  PRIdLEAST8 PRIiLEAST8 PRIoLEAST8 PRIuLEAST8 PRIxLEAST8 PRIXLEAST8
+  PRIdLEAST16 PRIiLEAST16 PRIoLEAST16 PRIuLEAST16 PRIxLEAST16 PRIXLEAST16
+  PRIdLEAST32 PRIiLEAST32 PRIoLEAST32 PRIuLEAST32 PRIxLEAST32 PRIXLEAST32
+  PRIdLEAST64 PRIiLEAST64
+  PRIoLEAST64 PRIuLEAST64 PRIxLEAST64 PRIXLEAST64
+  PRIdFAST8 PRIiFAST8 PRIoFAST8 PRIuFAST8 PRIxFAST8 PRIXFAST8
+  PRIdFAST16 PRIiFAST16 PRIoFAST16 PRIuFAST16 PRIxFAST16 PRIXFAST16
+  PRIdFAST32 PRIiFAST32 PRIoFAST32 PRIuFAST32 PRIxFAST32 PRIXFAST32
+  PRIdFAST64 PRIiFAST64
+  PRIoFAST64 PRIuFAST64 PRIxFAST64 PRIXFAST64
+  PRIdMAX PRIiMAX PRIoMAX PRIuMAX PRIxMAX PRIXMAX
+#ifdef INTPTR_MAX
+  PRIdPTR PRIiPTR
+#endif
+#ifdef UINTPTR_MAX
+  PRIoPTR PRIuPTR PRIxPTR PRIXPTR
+#endif
+  ;
+const char *l = /* implicit string concatenation */
+#ifdef INT8_MAX
+  SCNd8 SCNi8
+#endif
+#ifdef UINT8_MAX
+  SCNo8 SCNu8 SCNx8
+#endif
+#ifdef INT16_MAX
+  SCNd16 SCNi16
+#endif
+#ifdef UINT16_MAX
+  SCNo16 SCNu16 SCNx16
+#endif
+#ifdef INT32_MAX
+  SCNd32 SCNi32
+#endif
+#ifdef UINT32_MAX
+  SCNo32 SCNu32 SCNx32
+#endif
+#ifdef INT64_MAX
+  SCNd64 SCNi64
+#endif
+#ifdef UINT64_MAX
+  SCNo64 SCNu64 SCNx64
+#endif
+  SCNdLEAST8 SCNiLEAST8 SCNoLEAST8 SCNuLEAST8 SCNxLEAST8
+  SCNdLEAST16 SCNiLEAST16 SCNoLEAST16 SCNuLEAST16 SCNxLEAST16
+  SCNdLEAST32 SCNiLEAST32 SCNoLEAST32 SCNuLEAST32 SCNxLEAST32
+  SCNdLEAST64 SCNiLEAST64
+  SCNoLEAST64 SCNuLEAST64 SCNxLEAST64
+  SCNdFAST8 SCNiFAST8 SCNoFAST8 SCNuFAST8 SCNxFAST8
+  SCNdFAST16 SCNiFAST16 SCNoFAST16 SCNuFAST16 SCNxFAST16
+  SCNdFAST32 SCNiFAST32 SCNoFAST32 SCNuFAST32 SCNxFAST32
+  SCNdFAST64 SCNiFAST64
+  SCNoFAST64 SCNuFAST64 SCNxFAST64
+  SCNdMAX SCNiMAX SCNoMAX SCNuMAX SCNxMAX
+#ifdef INTPTR_MAX
+  SCNdPTR SCNiPTR
+#endif
+#ifdef UINTPTR_MAX
+  SCNoPTR SCNuPTR SCNxPTR
+#endif
+  ;
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-ioctl.c b/src/grep/gnulib-tests/test-ioctl.c
new file mode 100644
index 0000000..6d7b629
--- /dev/null
+++ b/src/grep/gnulib-tests/test-ioctl.c
@@ -0,0 +1,51 @@
+/* Test of ioctl() function.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <sys/ioctl.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (ioctl, int, (int, int, ...));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+#ifdef FIONREAD
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    int value;
+    errno = 0;
+    ASSERT (ioctl (-1, FIONREAD, &value) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    int value;
+    close (99);
+    errno = 0;
+    ASSERT (ioctl (99, FIONREAD, &value) == -1);
+    ASSERT (errno == EBADF);
+  }
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-isatty.c b/src/grep/gnulib-tests/test-isatty.c
new file mode 100644
index 0000000..d6b7117
--- /dev/null
+++ b/src/grep/gnulib-tests/test-isatty.c
@@ -0,0 +1,99 @@
+/* Test isatty() function.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (isatty, int, (int));
+
+#include <errno.h>
+#include <fcntl.h>
+
+#include "macros.h"
+
+/* The name of the "always silent" device.  */
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Native Windows API.  */
+# define DEV_NULL "NUL"
+#else
+/* Unix API.  */
+# define DEV_NULL "/dev/null"
+#endif
+
+int
+main (void)
+{
+  const char *file = "test-isatty.txt";
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (isatty (-1) == 0);
+    ASSERT (errno == EBADF
+            || errno == 0 /* seen on IRIX 6.5, Solaris 10 */
+           );
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (isatty (99) == 0);
+    ASSERT (errno == EBADF
+            || errno == 0 /* seen on IRIX 6.5, Solaris 10 */
+           );
+  }
+
+  /* Test behaviour for regular files.  */
+  {
+    int fd;
+
+    fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644);
+    ASSERT (0 <= fd);
+    ASSERT (write (fd, "hello", 5) == 5);
+    ASSERT (close (fd) == 0);
+
+    fd = open (file, O_RDONLY);
+    ASSERT (0 <= fd);
+    ASSERT (! isatty (fd));
+    ASSERT (close (fd) == 0);
+  }
+
+  /* Test behaviour for pipes.  */
+  {
+    int fd[2];
+
+    ASSERT (pipe (fd) == 0);
+    ASSERT (! isatty (fd[0]));
+    ASSERT (! isatty (fd[1]));
+    ASSERT (close (fd[0]) == 0);
+    ASSERT (close (fd[1]) == 0);
+  }
+
+  /* Test behaviour for /dev/null.  */
+  {
+    int fd;
+
+    fd = open (DEV_NULL, O_RDONLY);
+    ASSERT (0 <= fd);
+    ASSERT (! isatty (fd));
+    ASSERT (close (fd) == 0);
+  }
+
+  ASSERT (unlink (file) == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-isblank.c b/src/grep/gnulib-tests/test-isblank.c
new file mode 100644
index 0000000..eca2366
--- /dev/null
+++ b/src/grep/gnulib-tests/test-isblank.c
@@ -0,0 +1,50 @@
+/* Test of isblank() function.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <ctype.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (isblank, int, (int));
+
+#include <limits.h>
+#include <stdio.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  unsigned int c;
+
+  /* Verify the property in the "C" locale.
+     POSIX specifies in
+       <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap07.html>
+     that
+       - in all locales, the blank characters include the <space> and <tab>
+         characters,
+       - in the "POSIX" locale (which is usually the same as the "C" locale),
+         the blank characters include only the ASCII <space> and <tab>
+         characters.  */
+  for (c = 0; c <= UCHAR_MAX; c++)
+    ASSERT (!isblank (c) == !(c == ' ' || c == '\t'));
+  ASSERT (!isblank (EOF));
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-iswblank.c b/src/grep/gnulib-tests/test-iswblank.c
new file mode 100644
index 0000000..3f69114
--- /dev/null
+++ b/src/grep/gnulib-tests/test-iswblank.c
@@ -0,0 +1,35 @@
+/* Test of iswblank() function.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <wctype.h>
+
+#include "macros.h"
+
+/* Check that WEOF is defined.  */
+wint_t e = WEOF;
+
+int
+main (void)
+{
+  /* Check that the function exist as a function or as a macro.  */
+  (void) iswblank (0);
+  /* Check that the isw* functions map WEOF to 0.  */
+  ASSERT (!iswblank (e));
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-iswdigit.c b/src/grep/gnulib-tests/test-iswdigit.c
new file mode 100644
index 0000000..bcd66a0
--- /dev/null
+++ b/src/grep/gnulib-tests/test-iswdigit.c
@@ -0,0 +1,233 @@
+/* Test of iswdigit() function.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <wctype.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (iswdigit, int, (wint_t));
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+
+#include "macros.h"
+
+/* Returns the value of iswdigit for the multibyte character s[0..n-1].  */
+static int
+for_character (const char *s, size_t n)
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  memset (&state, '\0', sizeof (mbstate_t));
+  wc = (wchar_t) 0xBADFACE;
+  ret = mbrtowc (&wc, s, n, &state);
+  if (ret == n)
+    return iswdigit (wc);
+  else
+    return 0;
+}
+
+int
+main (int argc, char *argv[])
+{
+  int is;
+  char buf[4];
+
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Test WEOF.  */
+  is = iswdigit (WEOF);
+  ASSERT (is == 0);
+
+  /* Test single-byte characters.
+     ISO C 99 sections 7.25.2.1.5 and 5.2.1 specify that the decimal digits
+     include only the ASCII 0 ... 9 characters.  */
+  {
+    int c;
+
+    for (c = 0; c < 0x100; c++)
+      switch (c)
+        {
+        case '\t': case '\v': case '\f':
+        case ' ': case '!': case '"': case '#': case '%':
+        case '&': case '\'': case '(': case ')': case '*':
+        case '+': case ',': case '-': case '.': case '/':
+        case '0': case '1': case '2': case '3': case '4':
+        case '5': case '6': case '7': case '8': case '9':
+        case ':': case ';': case '<': case '=': case '>':
+        case '?':
+        case 'A': case 'B': case 'C': case 'D': case 'E':
+        case 'F': case 'G': case 'H': case 'I': case 'J':
+        case 'K': case 'L': case 'M': case 'N': case 'O':
+        case 'P': case 'Q': case 'R': case 'S': case 'T':
+        case 'U': case 'V': case 'W': case 'X': case 'Y':
+        case 'Z':
+        case '[': case '\\': case ']': case '^': case '_':
+        case 'a': case 'b': case 'c': case 'd': case 'e':
+        case 'f': case 'g': case 'h': case 'i': case 'j':
+        case 'k': case 'l': case 'm': case 'n': case 'o':
+        case 'p': case 'q': case 'r': case 's': case 't':
+        case 'u': case 'v': case 'w': case 'x': case 'y':
+        case 'z': case '{': case '|': case '}': case '~':
+          /* c is in the ISO C "basic character set".  */
+          buf[0] = (unsigned char) c;
+          is = for_character (buf, 1);
+          switch (c)
+            {
+            case '0': case '1': case '2': case '3': case '4':
+            case '5': case '6': case '7': case '8': case '9':
+              ASSERT (is != 0);
+              break;
+            default:
+              ASSERT (is == 0);
+              break;
+            }
+          break;
+        }
+  }
+
+  if (argc > 1)
+    switch (argv[1][0])
+      {
+      case '0':
+        /* C locale; tested above.  */
+        return 0;
+
+      case '1':
+        /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          is = for_character ("\262", 1);
+          ASSERT (is == 0);
+          /* U+00B3 SUPERSCRIPT THREE */
+          is = for_character ("\263", 1);
+          ASSERT (is == 0);
+          /* U+00B9 SUPERSCRIPT ONE */
+          is = for_character ("\271", 1);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      case '2':
+        /* Locale encoding is EUC-JP.  */
+        {
+          /* U+FF11 FULLWIDTH DIGIT ONE */
+          is = for_character ("\243\261", 2);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      case '3':
+        /* Locale encoding is UTF-8.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          is = for_character ("\302\262", 2);
+          ASSERT (is == 0);
+          /* U+00B3 SUPERSCRIPT THREE */
+          is = for_character ("\302\263", 2);
+          ASSERT (is == 0);
+          /* U+00B9 SUPERSCRIPT ONE */
+          is = for_character ("\302\271", 2);
+          ASSERT (is == 0);
+          /* U+0663 ARABIC-INDIC DIGIT THREE */
+          is = for_character ("\331\243", 2);
+          ASSERT (is == 0);
+          /* U+2070 SUPERSCRIPT ZERO */
+          is = for_character ("\342\201\260", 3);
+          ASSERT (is == 0);
+          /* U+2079 SUPERSCRIPT NINE */
+          is = for_character ("\342\201\271", 3);
+          ASSERT (is == 0);
+          /* U+FF11 FULLWIDTH DIGIT ONE */
+          is = for_character ("\357\274\221", 3);
+          ASSERT (is == 0);
+          /* U+1D7D1 MATHEMATICAL BOLD DIGIT THREE */
+          is = for_character ("\360\235\237\221", 4);
+          ASSERT (is == 0);
+          /* U+1D7DB MATHEMATICAL DOUBLE-STRUCK DIGIT THREE */
+          is = for_character ("\360\235\237\233", 4);
+          ASSERT (is == 0);
+          /* U+1D7E5 MATHEMATICAL SANS-SERIF DIGIT THREE */
+          is = for_character ("\360\235\237\245", 4);
+          ASSERT (is == 0);
+          /* U+1D7EF MATHEMATICAL SANS-SERIF BOLD DIGIT THREE */
+          is = for_character ("\360\235\237\257", 4);
+          ASSERT (is == 0);
+          /* U+1D7F9 MATHEMATICAL MONOSPACE DIGIT THREE */
+          is = for_character ("\360\235\237\271", 4);
+          ASSERT (is == 0);
+          /* U+E0033 TAG DIGIT THREE */
+          is = for_character ("\363\240\200\263", 4);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      case '4':
+        /* Locale encoding is GB18030.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          is = for_character ("\201\060\205\065", 4);
+          ASSERT (is == 0);
+          /* U+00B3 SUPERSCRIPT THREE */
+          is = for_character ("\201\060\205\066", 4);
+          ASSERT (is == 0);
+          /* U+00B9 SUPERSCRIPT ONE */
+          is = for_character ("\201\060\206\061", 4);
+          ASSERT (is == 0);
+          /* U+0663 ARABIC-INDIC DIGIT THREE */
+          is = for_character ("\201\061\211\071", 4);
+          ASSERT (is == 0);
+          /* U+2070 SUPERSCRIPT ZERO */
+          is = for_character ("\201\066\255\062", 4);
+          ASSERT (is == 0);
+          /* U+2079 SUPERSCRIPT NINE */
+          is = for_character ("\201\066\256\061", 4);
+          ASSERT (is == 0);
+          /* U+FF11 FULLWIDTH DIGIT ONE */
+          is = for_character ("\243\261", 2);
+          ASSERT (is == 0);
+          /* U+1D7D1 MATHEMATICAL BOLD DIGIT THREE */
+          is = for_character ("\224\063\353\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7DB MATHEMATICAL DOUBLE-STRUCK DIGIT THREE */
+          is = for_character ("\224\063\354\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7E5 MATHEMATICAL SANS-SERIF DIGIT THREE */
+          is = for_character ("\224\063\355\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7EF MATHEMATICAL SANS-SERIF BOLD DIGIT THREE */
+          is = for_character ("\224\063\356\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7F9 MATHEMATICAL MONOSPACE DIGIT THREE */
+          is = for_character ("\224\063\357\071", 4);
+          ASSERT (is == 0);
+          /* U+E0033 TAG DIGIT THREE */
+          is = for_character ("\323\066\232\071", 4);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      }
+
+  return 1;
+}
diff --git a/src/grep/gnulib-tests/test-iswdigit.sh b/src/grep/gnulib-tests/test-iswdigit.sh
new file mode 100755
index 0000000..1bde602
--- /dev/null
+++ b/src/grep/gnulib-tests/test-iswdigit.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+# Test in the POSIX locale.
+LC_ALL=C     ${CHECKER} ./test-iswdigit${EXEEXT} 0 || exit 1
+LC_ALL=POSIX ${CHECKER} ./test-iswdigit${EXEEXT} 0 || exit 1
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR \
+  ${CHECKER} ./test-iswdigit${EXEEXT} 1 \
+  || exit 1
+fi
+
+# Test whether a specific EUC-JP locale is installed.
+: ${LOCALE_JA=ja_JP}
+if test $LOCALE_JA != none; then
+  LC_ALL=$LOCALE_JA \
+  ${CHECKER} ./test-iswdigit${EXEEXT} 2 \
+  || exit 1
+fi
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 \
+  ${CHECKER} ./test-iswdigit${EXEEXT} 3 \
+  || exit 1
+fi
+
+# Test whether a specific GB18030 locale is installed.
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+if test $LOCALE_ZH_CN != none; then
+  LC_ALL=$LOCALE_ZH_CN \
+  ${CHECKER} ./test-iswdigit${EXEEXT} 4 \
+  || exit 1
+fi
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-iswxdigit.c b/src/grep/gnulib-tests/test-iswxdigit.c
new file mode 100644
index 0000000..15425ee
--- /dev/null
+++ b/src/grep/gnulib-tests/test-iswxdigit.c
@@ -0,0 +1,259 @@
+/* Test of iswxdigit() function.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <wctype.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (iswxdigit, int, (wint_t));
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+
+#include "macros.h"
+
+/* Returns the value of iswxdigit for the multibyte character s[0..n-1].  */
+static int
+for_character (const char *s, size_t n)
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  memset (&state, '\0', sizeof (mbstate_t));
+  wc = (wchar_t) 0xBADFACE;
+  ret = mbrtowc (&wc, s, n, &state);
+  if (ret == n)
+    return iswxdigit (wc);
+  else
+    return 0;
+}
+
+int
+main (int argc, char *argv[])
+{
+  int is;
+  char buf[4];
+
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Test WEOF.  */
+  is = iswxdigit (WEOF);
+  ASSERT (is == 0);
+
+  /* Test single-byte characters.
+     ISO C 99 sections 7.25.2.1.12 and 6.4.4.1 specify that the hexadecimal
+     digits include only the ASCII 0 ... 9 A ... F a ... f characters.  */
+  {
+    int c;
+
+    for (c = 0; c < 0x100; c++)
+      switch (c)
+        {
+        case '\t': case '\v': case '\f':
+        case ' ': case '!': case '"': case '#': case '%':
+        case '&': case '\'': case '(': case ')': case '*':
+        case '+': case ',': case '-': case '.': case '/':
+        case '0': case '1': case '2': case '3': case '4':
+        case '5': case '6': case '7': case '8': case '9':
+        case ':': case ';': case '<': case '=': case '>':
+        case '?':
+        case 'A': case 'B': case 'C': case 'D': case 'E':
+        case 'F': case 'G': case 'H': case 'I': case 'J':
+        case 'K': case 'L': case 'M': case 'N': case 'O':
+        case 'P': case 'Q': case 'R': case 'S': case 'T':
+        case 'U': case 'V': case 'W': case 'X': case 'Y':
+        case 'Z':
+        case '[': case '\\': case ']': case '^': case '_':
+        case 'a': case 'b': case 'c': case 'd': case 'e':
+        case 'f': case 'g': case 'h': case 'i': case 'j':
+        case 'k': case 'l': case 'm': case 'n': case 'o':
+        case 'p': case 'q': case 'r': case 's': case 't':
+        case 'u': case 'v': case 'w': case 'x': case 'y':
+        case 'z': case '{': case '|': case '}': case '~':
+          /* c is in the ISO C "basic character set".  */
+          buf[0] = (unsigned char) c;
+          is = for_character (buf, 1);
+          switch (c)
+            {
+            case '0': case '1': case '2': case '3': case '4':
+            case '5': case '6': case '7': case '8': case '9':
+            case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+            case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+              ASSERT (is != 0);
+              break;
+            default:
+              ASSERT (is == 0);
+              break;
+            }
+          break;
+        }
+  }
+
+  if (argc > 1)
+    switch (argv[1][0])
+      {
+      case '0':
+        /* C locale; tested above.  */
+        return 0;
+
+      case '1':
+        /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          is = for_character ("\262", 1);
+          ASSERT (is == 0);
+          /* U+00B3 SUPERSCRIPT THREE */
+          is = for_character ("\263", 1);
+          ASSERT (is == 0);
+          /* U+00B9 SUPERSCRIPT ONE */
+          is = for_character ("\271", 1);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      case '2':
+        /* Locale encoding is EUC-JP.  */
+        {
+          /* U+FF11 FULLWIDTH DIGIT ONE */
+          is = for_character ("\243\261", 2);
+          ASSERT (is == 0);
+          /* U+FF21 FULLWIDTH LATIN CAPITAL LETTER A */
+          is = for_character ("\243\301", 2);
+          ASSERT (is == 0);
+          /* U+FF41 FULLWIDTH LATIN SMALL LETTER A */
+          is = for_character ("\243\341", 2);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      case '3':
+        /* Locale encoding is UTF-8.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          is = for_character ("\302\262", 2);
+          ASSERT (is == 0);
+          /* U+00B3 SUPERSCRIPT THREE */
+          is = for_character ("\302\263", 2);
+          ASSERT (is == 0);
+          /* U+00B9 SUPERSCRIPT ONE */
+          is = for_character ("\302\271", 2);
+          ASSERT (is == 0);
+          /* U+0663 ARABIC-INDIC DIGIT THREE */
+          is = for_character ("\331\243", 2);
+          ASSERT (is == 0);
+          /* U+2070 SUPERSCRIPT ZERO */
+          is = for_character ("\342\201\260", 3);
+          ASSERT (is == 0);
+          /* U+2079 SUPERSCRIPT NINE */
+          is = for_character ("\342\201\271", 3);
+          ASSERT (is == 0);
+          /* U+FF11 FULLWIDTH DIGIT ONE */
+          is = for_character ("\357\274\221", 3);
+          ASSERT (is == 0);
+          /* U+FF21 FULLWIDTH LATIN CAPITAL LETTER A */
+          is = for_character ("\357\274\241", 3);
+          ASSERT (is == 0);
+          /* U+FF41 FULLWIDTH LATIN SMALL LETTER A */
+          is = for_character ("\357\275\201", 3);
+          ASSERT (is == 0);
+          /* U+1D7D1 MATHEMATICAL BOLD DIGIT THREE */
+          is = for_character ("\360\235\237\221", 4);
+          ASSERT (is == 0);
+          /* U+1D7DB MATHEMATICAL DOUBLE-STRUCK DIGIT THREE */
+          is = for_character ("\360\235\237\233", 4);
+          ASSERT (is == 0);
+          /* U+1D7E5 MATHEMATICAL SANS-SERIF DIGIT THREE */
+          is = for_character ("\360\235\237\245", 4);
+          ASSERT (is == 0);
+          /* U+1D7EF MATHEMATICAL SANS-SERIF BOLD DIGIT THREE */
+          is = for_character ("\360\235\237\257", 4);
+          ASSERT (is == 0);
+          /* U+1D7F9 MATHEMATICAL MONOSPACE DIGIT THREE */
+          is = for_character ("\360\235\237\271", 4);
+          ASSERT (is == 0);
+          /* U+E0033 TAG DIGIT THREE */
+          is = for_character ("\363\240\200\263", 4);
+          ASSERT (is == 0);
+          /* U+E0041 TAG LATIN CAPITAL LETTER A */
+          is = for_character ("\363\240\201\201", 4);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      case '4':
+        /* Locale encoding is GB18030.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          is = for_character ("\201\060\205\065", 4);
+          ASSERT (is == 0);
+          /* U+00B3 SUPERSCRIPT THREE */
+          is = for_character ("\201\060\205\066", 4);
+          ASSERT (is == 0);
+          /* U+00B9 SUPERSCRIPT ONE */
+          is = for_character ("\201\060\206\061", 4);
+          ASSERT (is == 0);
+          /* U+0663 ARABIC-INDIC DIGIT THREE */
+          is = for_character ("\201\061\211\071", 4);
+          ASSERT (is == 0);
+          /* U+2070 SUPERSCRIPT ZERO */
+          is = for_character ("\201\066\255\062", 4);
+          ASSERT (is == 0);
+          /* U+2079 SUPERSCRIPT NINE */
+          is = for_character ("\201\066\256\061", 4);
+          ASSERT (is == 0);
+          /* U+FF11 FULLWIDTH DIGIT ONE */
+          is = for_character ("\243\261", 2);
+          ASSERT (is == 0);
+          /* U+FF21 FULLWIDTH LATIN CAPITAL LETTER A */
+          is = for_character ("\243\301", 2);
+          ASSERT (is == 0);
+          /* U+FF41 FULLWIDTH LATIN SMALL LETTER A */
+          is = for_character ("\243\341", 2);
+          ASSERT (is == 0);
+          /* U+1D7D1 MATHEMATICAL BOLD DIGIT THREE */
+          is = for_character ("\224\063\353\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7DB MATHEMATICAL DOUBLE-STRUCK DIGIT THREE */
+          is = for_character ("\224\063\354\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7E5 MATHEMATICAL SANS-SERIF DIGIT THREE */
+          is = for_character ("\224\063\355\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7EF MATHEMATICAL SANS-SERIF BOLD DIGIT THREE */
+          is = for_character ("\224\063\356\071", 4);
+          ASSERT (is == 0);
+          /* U+1D7F9 MATHEMATICAL MONOSPACE DIGIT THREE */
+          is = for_character ("\224\063\357\071", 4);
+          ASSERT (is == 0);
+          /* U+E0033 TAG DIGIT THREE */
+          is = for_character ("\323\066\232\071", 4);
+          ASSERT (is == 0);
+          /* U+E0041 TAG LATIN CAPITAL LETTER A */
+          is = for_character ("\323\066\234\063", 4);
+          ASSERT (is == 0);
+        }
+        return 0;
+
+      }
+
+  return 1;
+}
diff --git a/src/grep/gnulib-tests/test-iswxdigit.sh b/src/grep/gnulib-tests/test-iswxdigit.sh
new file mode 100755
index 0000000..f545438
--- /dev/null
+++ b/src/grep/gnulib-tests/test-iswxdigit.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+# Test in the POSIX locale.
+LC_ALL=C     ${CHECKER} ./test-iswxdigit${EXEEXT} 0 || exit 1
+LC_ALL=POSIX ${CHECKER} ./test-iswxdigit${EXEEXT} 0 || exit 1
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR \
+  ${CHECKER} ./test-iswxdigit${EXEEXT} 1 \
+  || exit 1
+fi
+
+# Test whether a specific EUC-JP locale is installed.
+: ${LOCALE_JA=ja_JP}
+if test $LOCALE_JA != none; then
+  LC_ALL=$LOCALE_JA \
+  ${CHECKER} ./test-iswxdigit${EXEEXT} 2 \
+  || exit 1
+fi
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 \
+  ${CHECKER} ./test-iswxdigit${EXEEXT} 3 \
+  || exit 1
+fi
+
+# Test whether a specific GB18030 locale is installed.
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+if test $LOCALE_ZH_CN != none; then
+  LC_ALL=$LOCALE_ZH_CN \
+  ${CHECKER} ./test-iswxdigit${EXEEXT} 4 \
+  || exit 1
+fi
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-langinfo.c b/src/grep/gnulib-tests/test-langinfo.c
new file mode 100644
index 0000000..4215ea7
--- /dev/null
+++ b/src/grep/gnulib-tests/test-langinfo.c
@@ -0,0 +1,92 @@
+/* Test of <langinfo.h> substitute.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <langinfo.h>
+
+/* Check that all the nl_item values are defined.  */
+int items[] =
+  {
+    /* nl_langinfo items of the LC_CTYPE category */
+    CODESET,
+    /* nl_langinfo items of the LC_NUMERIC category */
+    RADIXCHAR,
+    THOUSEP,
+    /* nl_langinfo items of the LC_TIME category */
+    D_T_FMT,
+    D_FMT,
+    T_FMT,
+    T_FMT_AMPM,
+    AM_STR,
+    PM_STR,
+    DAY_1,
+    DAY_2,
+    DAY_3,
+    DAY_4,
+    DAY_5,
+    DAY_6,
+    DAY_7,
+    ABDAY_1,
+    ABDAY_2,
+    ABDAY_3,
+    ABDAY_4,
+    ABDAY_5,
+    ABDAY_6,
+    ABDAY_7,
+    MON_1,
+    MON_2,
+    MON_3,
+    MON_4,
+    MON_5,
+    MON_6,
+    MON_7,
+    MON_8,
+    MON_9,
+    MON_10,
+    MON_11,
+    MON_12,
+    ABMON_1,
+    ABMON_2,
+    ABMON_3,
+    ABMON_4,
+    ABMON_5,
+    ABMON_6,
+    ABMON_7,
+    ABMON_8,
+    ABMON_9,
+    ABMON_10,
+    ABMON_11,
+    ABMON_12,
+    ERA,
+    ERA_D_FMT,
+    ERA_D_T_FMT,
+    ERA_T_FMT,
+    ALT_DIGITS,
+    /* nl_langinfo items of the LC_MONETARY category */
+    CRNCYSTR,
+    /* nl_langinfo items of the LC_MESSAGES category */
+    YESEXPR,
+    NOEXPR
+  };
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-limits-h.c b/src/grep/gnulib-tests/test-limits-h.c
new file mode 100644
index 0000000..f3394c1
--- /dev/null
+++ b/src/grep/gnulib-tests/test-limits-h.c
@@ -0,0 +1,122 @@
+/* Test of <limits.h> substitute.
+   Copyright 2016-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <config.h>
+
+#include <limits.h>
+
+#include "verify.h"
+
+#if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
+# pragma GCC diagnostic ignored "-Woverlength-strings"
+#endif
+
+#define verify_width(width, min, max) \
+  verify ((max) >> ((width) - 1 - ((min) < 0)) == 1)
+
+/* Macros borrowed from intprops.h.  */
+#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+#define TYPE_WIDTH(t) (sizeof (t) * CHAR_BIT)
+#define TYPE_MINIMUM(t) ((t) ~ TYPE_MAXIMUM (t))
+#define TYPE_MAXIMUM(t)                                                 \
+  ((t) (! TYPE_SIGNED (t)                                               \
+        ? (t) -1                                                        \
+        : ((((t) 1 << (TYPE_WIDTH (t) - 2)) - 1) * 2 + 1)))
+
+/* Type width macros.  */
+
+int type_bits[] =
+  {
+    CHAR_BIT,
+    WORD_BIT,
+    LONG_BIT
+  };
+verify_width (CHAR_BIT, CHAR_MIN, CHAR_MAX);
+verify_width (WORD_BIT, INT_MIN, INT_MAX);
+verify_width (LONG_BIT, LONG_MIN, LONG_MAX);
+
+/* Numerical limit macros.  */
+
+char               limits1[]  = { CHAR_MIN, CHAR_MAX };
+verify (TYPE_MINIMUM (char) == CHAR_MIN);
+verify (TYPE_MAXIMUM (char) == CHAR_MAX);
+
+signed char        limits2[]  = { SCHAR_MIN, SCHAR_MAX };
+verify (TYPE_MINIMUM (signed char) == SCHAR_MIN);
+verify (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
+
+unsigned char      limits3[]  = { UCHAR_MAX };
+verify (TYPE_MINIMUM (unsigned char) == 0);
+verify (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX);
+
+short              limits4[]  = { SHRT_MIN, SHRT_MAX };
+verify (TYPE_MINIMUM (short int) == SHRT_MIN);
+verify (TYPE_MAXIMUM (short int) == SHRT_MAX);
+
+unsigned short     limits5[]  = { USHRT_MAX };
+verify (TYPE_MINIMUM (unsigned short int) == 0);
+verify (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX);
+
+int                limits6[]  = { INT_MIN, INT_MAX };
+verify (TYPE_MINIMUM (int) == INT_MIN);
+verify (TYPE_MAXIMUM (int) == INT_MAX);
+
+unsigned int       limits7[]  = { UINT_MAX };
+verify (TYPE_MINIMUM (unsigned int) == 0);
+verify (TYPE_MAXIMUM (unsigned int) == UINT_MAX);
+
+long               limits8[]  = { LONG_MIN, LONG_MAX };
+verify (TYPE_MINIMUM (long int) == LONG_MIN);
+verify (TYPE_MAXIMUM (long int) == LONG_MAX);
+
+unsigned long      limits9[]  = { ULONG_MAX };
+verify (TYPE_MINIMUM (unsigned long int) == 0);
+verify (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX);
+
+long long          limits10[] = { LLONG_MIN, LLONG_MAX };
+verify (TYPE_MINIMUM (long long int) == LLONG_MIN);
+verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
+
+unsigned long long limits11[] = { ULLONG_MAX };
+verify (TYPE_MINIMUM (unsigned long long int) == 0);
+verify (TYPE_MAXIMUM (unsigned long long int) == ULLONG_MAX);
+
+/* Macros specified by ISO/IEC TS 18661-1:2014.  */
+
+verify_width (CHAR_WIDTH, CHAR_MIN, CHAR_MAX);
+verify_width (SCHAR_WIDTH, SCHAR_MIN, SCHAR_MAX);
+verify_width (UCHAR_WIDTH, 0, UCHAR_MAX);
+verify_width (SHRT_WIDTH, SHRT_MIN, SHRT_MAX);
+verify_width (USHRT_WIDTH, 0, USHRT_MAX);
+verify_width (INT_WIDTH, INT_MIN, INT_MAX);
+verify_width (UINT_WIDTH, 0, UINT_MAX);
+verify_width (LONG_WIDTH, LONG_MIN, LONG_MAX);
+verify_width (ULONG_WIDTH, 0, ULONG_MAX);
+verify_width (LLONG_WIDTH, LLONG_MIN, LLONG_MAX);
+verify_width (ULLONG_WIDTH, 0, ULLONG_MAX);
+
+/* Macros specified by C2x.  */
+
+int bool_attrs[] = { BOOL_MAX, BOOL_WIDTH };
+verify (BOOL_MAX == (((1U << (BOOL_WIDTH - 1)) - 1) * 2) + 1);
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-listen.c b/src/grep/gnulib-tests/test-listen.c
new file mode 100644
index 0000000..3692514
--- /dev/null
+++ b/src/grep/gnulib-tests/test-listen.c
@@ -0,0 +1,49 @@
+/* Test listen() function.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (listen, int, (int, int));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "sockets.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  (void) gl_sockets_startup (SOCKETS_1_1);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (listen (-1, 1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (listen (99 ,1) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-localcharset.c b/src/grep/gnulib-tests/test-localcharset.c
new file mode 100644
index 0000000..07b756c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-localcharset.c
@@ -0,0 +1,39 @@
+/* Manual test of localcharset() function.
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This program prints the result of locale_charset in the current locale.
+   One way to use it is:
+     $ for l in `locale -a`; do
+         echo -n "$l               "; LANG=$l ./test-localcharset;
+       done \
+       | sort -k 2
+ */
+
+#include <config.h>
+
+#include "localcharset.h"
+
+#include <locale.h>
+#include <stdio.h>
+
+int
+main (void)
+{
+  setlocale (LC_ALL, "");
+  printf ("%s\n", locale_charset ());
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-locale.c b/src/grep/gnulib-tests/test-locale.c
new file mode 100644
index 0000000..59644fa
--- /dev/null
+++ b/src/grep/gnulib-tests/test-locale.c
@@ -0,0 +1,80 @@
+/* Test of <locale.h> substitute.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <locale.h>
+
+#include "verify.h"
+
+int a[] =
+  {
+    LC_ALL,
+    LC_COLLATE,
+    LC_CTYPE,
+    LC_MESSAGES,
+    LC_MONETARY,
+    LC_NUMERIC,
+    LC_TIME
+  };
+
+/* Check that the 'struct lconv' type is defined.  */
+struct lconv l;
+int ls;
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+int
+main ()
+{
+#if HAVE_WORKING_NEWLOCALE
+  /* Check that the locale_t type and the LC_GLOBAL_LOCALE macro are defined.  */
+  locale_t b = LC_GLOBAL_LOCALE;
+  (void) b;
+#endif
+
+  /* Check that 'struct lconv' has the ISO C and POSIX specified members.  */
+  ls += sizeof (*l.decimal_point);
+  ls += sizeof (*l.thousands_sep);
+  ls += sizeof (*l.grouping);
+  ls += sizeof (*l.mon_decimal_point);
+  ls += sizeof (*l.mon_thousands_sep);
+  ls += sizeof (*l.mon_grouping);
+  ls += sizeof (*l.positive_sign);
+  ls += sizeof (*l.negative_sign);
+  ls += sizeof (*l.currency_symbol);
+  ls += sizeof (l.frac_digits);
+  ls += sizeof (l.p_cs_precedes);
+  ls += sizeof (l.p_sign_posn);
+  ls += sizeof (l.p_sep_by_space);
+  ls += sizeof (l.n_cs_precedes);
+  ls += sizeof (l.n_sign_posn);
+  ls += sizeof (l.n_sep_by_space);
+  ls += sizeof (*l.int_curr_symbol);
+  ls += sizeof (l.int_frac_digits);
+  ls += sizeof (l.int_p_cs_precedes);
+  ls += sizeof (l.int_p_sign_posn);
+  ls += sizeof (l.int_p_sep_by_space);
+  ls += sizeof (l.int_n_cs_precedes);
+  ls += sizeof (l.int_n_sign_posn);
+  ls += sizeof (l.int_n_sep_by_space);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-localeconv.c b/src/grep/gnulib-tests/test-localeconv.c
new file mode 100644
index 0000000..b7998ef
--- /dev/null
+++ b/src/grep/gnulib-tests/test-localeconv.c
@@ -0,0 +1,72 @@
+/* Test of localeconv() function.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2012.  */
+
+#include <config.h>
+
+#include <locale.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (localeconv, struct lconv *, (void));
+
+#include <limits.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* Test localeconv() result in the "C" locale.  */
+  {
+    struct lconv *l = localeconv ();
+
+    ASSERT (STREQ (l->decimal_point, "."));
+    ASSERT (STREQ (l->thousands_sep, ""));
+#if !((defined __FreeBSD__ || defined __DragonFly__) || defined __sun || defined __CYGWIN__)
+    ASSERT (STREQ (l->grouping, ""));
+#endif
+
+    ASSERT (STREQ (l->mon_decimal_point, ""));
+    ASSERT (STREQ (l->mon_thousands_sep, ""));
+#if !((defined __FreeBSD__ || defined __DragonFly__) || defined __sun || defined __CYGWIN__)
+    ASSERT (STREQ (l->mon_grouping, ""));
+#endif
+    ASSERT (STREQ (l->positive_sign, ""));
+    ASSERT (STREQ (l->negative_sign, ""));
+
+    ASSERT (STREQ (l->currency_symbol, ""));
+    ASSERT (l->frac_digits == CHAR_MAX);
+    ASSERT (l->p_cs_precedes == CHAR_MAX);
+    ASSERT (l->p_sign_posn == CHAR_MAX);
+    ASSERT (l->p_sep_by_space == CHAR_MAX);
+    ASSERT (l->n_cs_precedes == CHAR_MAX);
+    ASSERT (l->n_sign_posn == CHAR_MAX);
+    ASSERT (l->n_sep_by_space == CHAR_MAX);
+
+    ASSERT (STREQ (l->int_curr_symbol, ""));
+    ASSERT (l->int_frac_digits == CHAR_MAX);
+    ASSERT (l->int_p_cs_precedes == CHAR_MAX);
+    ASSERT (l->int_p_sign_posn == CHAR_MAX);
+    ASSERT (l->int_p_sep_by_space == CHAR_MAX);
+    ASSERT (l->int_n_cs_precedes == CHAR_MAX);
+    ASSERT (l->int_n_sign_posn == CHAR_MAX);
+    ASSERT (l->int_n_sep_by_space == CHAR_MAX);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-localename.c b/src/grep/gnulib-tests/test-localename.c
new file mode 100644
index 0000000..22790ab
--- /dev/null
+++ b/src/grep/gnulib-tests/test-localename.c
@@ -0,0 +1,816 @@
+/* Test of gl_locale_name function and its variants.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "localename.h"
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+#if HAVE_WORKING_NEWLOCALE && HAVE_WORKING_USELOCALE && !HAVE_FAKE_LOCALES
+# define HAVE_GOOD_USELOCALE 1
+#endif
+
+
+#if HAVE_GOOD_USELOCALE
+
+static struct { int cat; int mask; const char *string; } const categories[] =
+  {
+      { LC_CTYPE,          LC_CTYPE_MASK,          "LC_CTYPE" },
+      { LC_NUMERIC,        LC_NUMERIC_MASK,        "LC_NUMERIC" },
+      { LC_TIME,           LC_TIME_MASK,           "LC_TIME" },
+      { LC_COLLATE,        LC_COLLATE_MASK,        "LC_COLLATE" },
+      { LC_MONETARY,       LC_MONETARY_MASK,       "LC_MONETARY" },
+      { LC_MESSAGES,       LC_MESSAGES_MASK,       "LC_MESSAGES" }
+# ifdef LC_PAPER
+    , { LC_PAPER,          LC_PAPER_MASK,          "LC_PAPER" }
+# endif
+# ifdef LC_NAME
+    , { LC_NAME,           LC_NAME_MASK,           "LC_NAME" }
+# endif
+# ifdef LC_ADDRESS
+    , { LC_ADDRESS,        LC_ADDRESS_MASK,        "LC_ADDRESS" }
+# endif
+# ifdef LC_TELEPHONE
+    , { LC_TELEPHONE,      LC_TELEPHONE_MASK,      "LC_TELEPHONE" }
+# endif
+# ifdef LC_MEASUREMENT
+    , { LC_MEASUREMENT,    LC_MEASUREMENT_MASK,    "LC_MEASUREMENT" }
+# endif
+# ifdef LC_IDENTIFICATION
+    , { LC_IDENTIFICATION, LC_IDENTIFICATION_MASK, "LC_IDENTIFICATION" }
+# endif
+  };
+
+#endif
+
+/* Test the gl_locale_name() function.  */
+static void
+test_locale_name (void)
+{
+  const char *ret;
+  const char *name;
+
+  /* Check that gl_locale_name returns non-NULL.  */
+  ASSERT (gl_locale_name (LC_MESSAGES, "LC_MESSAGES") != NULL);
+
+  /* Get into a defined state,  */
+  setlocale (LC_ALL, "en_US.UTF-8");
+#if HAVE_GOOD_USELOCALE
+  uselocale (LC_GLOBAL_LOCALE);
+#endif
+
+  /* Check that when all environment variables are unset,
+     gl_locale_name returns the default locale.  */
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LC_NUMERIC");
+  unsetenv ("LANG");
+  /* Need also to unset all environment variables that specify standard or
+     non-standard locale categories.  Otherwise, on glibc systems, when some
+     of these variables are set and reference a nonexistent locale, the
+     setlocale (LC_ALL, "") call below would fail.  */
+  unsetenv ("LC_COLLATE");
+  unsetenv ("LC_MONETARY");
+  unsetenv ("LC_TIME");
+  unsetenv ("LC_ADDRESS");
+  unsetenv ("LC_IDENTIFICATION");
+  unsetenv ("LC_MEASUREMENT");
+  unsetenv ("LC_NAME");
+  unsetenv ("LC_PAPER");
+  unsetenv ("LC_TELEPHONE");
+  ret = setlocale (LC_ALL, "");
+  ASSERT (ret != NULL);
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"),
+                  gl_locale_name_default ()) == 0);
+  ASSERT (strcmp (gl_locale_name (LC_NUMERIC, "LC_NUMERIC"),
+                  gl_locale_name_default ()) == 0);
+
+  /* Check that an empty environment variable is treated like an unset
+     environment variable.  */
+
+  setenv ("LC_ALL", "", 1);
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"),
+                  gl_locale_name_default ()) == 0);
+
+  unsetenv ("LC_ALL");
+  setenv ("LC_CTYPE", "", 1);
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"),
+                  gl_locale_name_default ()) == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "", 1);
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"),
+                  gl_locale_name_default ()) == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  setenv ("LANG", "", 1);
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"),
+                  gl_locale_name_default ()) == 0);
+
+  /* Check that LC_ALL overrides the others, and LANG is overridden by the
+     others.  */
+
+  setenv ("LC_ALL", "C", 1);
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"), "C") == 0);
+
+  unsetenv ("LC_ALL");
+  setenv ("LC_CTYPE", "C", 1);
+  setenv ("LC_MESSAGES", "C", 1);
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"), "C") == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  setenv ("LANG", "C", 1);
+  setlocale (LC_ALL, "");
+  ASSERT (strcmp (gl_locale_name (LC_MESSAGES, "LC_MESSAGES"), "C") == 0);
+
+  /* Check mixed situations.  */
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "fr_FR.UTF-8", 1);
+  setenv ("LANG", "de_DE.UTF-8", 1);
+  if (setlocale (LC_ALL, "") != NULL)
+    {
+      name = gl_locale_name (LC_CTYPE, "LC_CTYPE");
+#if defined _WIN32 && !defined __CYGWIN__
+      /* On native Windows, here,
+           gl_locale_name_thread (LC_CTYPE, "LC_CTYPE")
+         returns NULL and
+           gl_locale_name_posix (LC_CTYPE, "LC_CTYPE")
+         returns either "de_DE" or "de_DE.UTF-8".  */
+      ASSERT (strcmp (name, "de_DE") == 0 || strcmp (name, "de_DE.UTF-8") == 0);
+#else
+      ASSERT (strcmp (name, "de_DE.UTF-8") == 0);
+#endif
+      name = gl_locale_name (LC_MESSAGES, "LC_MESSAGES");
+      ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+    }
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "fr_FR.UTF-8", 1);
+  unsetenv ("LANG");
+  if (setlocale (LC_ALL, "") != NULL)
+    {
+      name = gl_locale_name (LC_CTYPE, "LC_CTYPE");
+      ASSERT (strcmp (name, gl_locale_name_default ()) == 0);
+      name = gl_locale_name (LC_MESSAGES, "LC_MESSAGES");
+      ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+    }
+
+#if HAVE_GOOD_USELOCALE
+  /* Check that gl_locale_name considers the thread locale.  */
+  {
+    locale_t locale = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+    if (locale != NULL)
+      {
+        uselocale (locale);
+        name = gl_locale_name (LC_CTYPE, "LC_CTYPE");
+        ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+        name = gl_locale_name (LC_MESSAGES, "LC_MESSAGES");
+        ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+        uselocale (LC_GLOBAL_LOCALE);
+        freelocale (locale);
+      }
+  }
+
+  /* Check that gl_locale_name distinguishes different categories of the
+     thread locale, and that the name is the right one for each.  */
+  {
+    unsigned int i;
+
+    for (i = 0; i < SIZEOF (categories); i++)
+      {
+        int category_mask = categories[i].mask;
+        locale_t loc = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+        if (loc != NULL)
+          {
+            locale_t locale = newlocale (category_mask, "de_DE.UTF-8", loc);
+            if (locale == NULL)
+              freelocale (loc);
+            else
+              {
+                unsigned int j;
+
+                uselocale (locale);
+                for (j = 0; j < SIZEOF (categories); j++)
+                  {
+                    const char *name_j =
+                      gl_locale_name (categories[j].cat, categories[j].string);
+                    if (j == i)
+                      ASSERT (strcmp (name_j, "de_DE.UTF-8") == 0);
+                    else
+                      ASSERT (strcmp (name_j, "fr_FR.UTF-8") == 0);
+                  }
+                uselocale (LC_GLOBAL_LOCALE);
+                freelocale (locale);
+              }
+          }
+      }
+  }
+#endif
+}
+
+/* Test the gl_locale_name_thread() function.  */
+static void
+test_locale_name_thread (void)
+{
+  /* Get into a defined state,  */
+  setlocale (LC_ALL, "en_US.UTF-8");
+
+#if HAVE_GOOD_USELOCALE
+  /* Check that gl_locale_name_thread returns NULL when no thread locale is
+     set.  */
+  uselocale (LC_GLOBAL_LOCALE);
+  ASSERT (gl_locale_name_thread (LC_CTYPE, "LC_CTYPE") == NULL);
+  ASSERT (gl_locale_name_thread (LC_MESSAGES, "LC_MESSAGES") == NULL);
+
+  /* Check that gl_locale_name_thread considers the thread locale.  */
+  {
+    locale_t locale = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+    if (locale != NULL)
+      {
+        const char *name;
+
+        uselocale (locale);
+        name = gl_locale_name_thread (LC_CTYPE, "LC_CTYPE");
+        ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+        name = gl_locale_name_thread (LC_MESSAGES, "LC_MESSAGES");
+        ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+        uselocale (LC_GLOBAL_LOCALE);
+        freelocale (locale);
+      }
+  }
+
+  /* Check that gl_locale_name_thread distinguishes different categories of the
+     thread locale, and that the name is the right one for each.  */
+  {
+    unsigned int i;
+
+    for (i = 0; i < SIZEOF (categories); i++)
+      {
+        int category_mask = categories[i].mask;
+        locale_t loc = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+        if (loc != NULL)
+          {
+            locale_t locale = newlocale (category_mask, "de_DE.UTF-8", loc);
+            if (locale == NULL)
+              freelocale (loc);
+            else
+              {
+                unsigned int j;
+
+                uselocale (locale);
+                for (j = 0; j < SIZEOF (categories); j++)
+                  {
+                    const char *name_j =
+                      gl_locale_name_thread (categories[j].cat,
+                                             categories[j].string);
+                    if (j == i)
+                      ASSERT (strcmp (name_j, "de_DE.UTF-8") == 0);
+                    else
+                      ASSERT (strcmp (name_j, "fr_FR.UTF-8") == 0);
+                  }
+                uselocale (LC_GLOBAL_LOCALE);
+                freelocale (locale);
+              }
+          }
+      }
+  }
+
+  /* Check that gl_locale_name_thread returns a string that is allocated with
+     indefinite extent.  */
+  {
+    /* Try many locale names in turn, in order to defeat possible caches.  */
+    static const char * const choices[] =
+      {
+        "C",
+        "POSIX",
+        "af_ZA",
+        "af_ZA.UTF-8",
+        "am_ET",
+        "am_ET.UTF-8",
+        "be_BY",
+        "be_BY.UTF-8",
+        "bg_BG",
+        "bg_BG.UTF-8",
+        "ca_ES",
+        "ca_ES.UTF-8",
+        "cs_CZ",
+        "cs_CZ.UTF-8",
+        "da_DK",
+        "da_DK.UTF-8",
+        "de_AT",
+        "de_AT.UTF-8",
+        "de_CH",
+        "de_CH.UTF-8",
+        "de_DE",
+        "de_DE.UTF-8",
+        "el_GR",
+        "el_GR.UTF-8",
+        "en_AU",
+        "en_AU.UTF-8",
+        "en_CA",
+        "en_CA.UTF-8",
+        "en_GB",
+        "en_GB.UTF-8",
+        "en_IE",
+        "en_IE.UTF-8",
+        "en_NZ",
+        "en_NZ.UTF-8",
+        "en_US",
+        "en_US.UTF-8",
+        "es_ES",
+        "es_ES.UTF-8",
+        "et_EE",
+        "et_EE.UTF-8",
+        "eu_ES",
+        "eu_ES.UTF-8",
+        "fi_FI",
+        "fi_FI.UTF-8",
+        "fr_BE",
+        "fr_BE.UTF-8",
+        "fr_CA",
+        "fr_CA.UTF-8",
+        "fr_CH",
+        "fr_CH.UTF-8",
+        "fr_FR",
+        "fr_FR.UTF-8",
+        "he_IL",
+        "he_IL.UTF-8",
+        "hr_HR",
+        "hr_HR.UTF-8",
+        "hu_HU",
+        "hu_HU.UTF-8",
+        "hy_AM",
+        "is_IS",
+        "is_IS.UTF-8",
+        "it_CH",
+        "it_CH.UTF-8",
+        "it_IT",
+        "it_IT.UTF-8",
+        "ja_JP.UTF-8",
+        "kk_KZ",
+        "kk_KZ.UTF-8",
+        "ko_KR.UTF-8",
+        "lt_LT",
+        "lt_LT.UTF-8",
+        "nl_BE",
+        "nl_BE.UTF-8",
+        "nl_NL",
+        "nl_NL.UTF-8",
+        "no_NO",
+        "no_NO.UTF-8",
+        "pl_PL",
+        "pl_PL.UTF-8",
+        "pt_BR",
+        "pt_BR.UTF-8",
+        "pt_PT",
+        "pt_PT.UTF-8",
+        "ro_RO",
+        "ro_RO.UTF-8",
+        "ru_RU",
+        "ru_RU.UTF-8",
+        "sk_SK",
+        "sk_SK.UTF-8",
+        "sl_SI",
+        "sl_SI.UTF-8",
+        "sv_SE",
+        "sv_SE.UTF-8",
+        "tr_TR",
+        "tr_TR.UTF-8",
+        "uk_UA",
+        "uk_UA.UTF-8",
+        "zh_CN",
+        "zh_CN.UTF-8",
+        "zh_HK",
+        "zh_HK.UTF-8",
+        "zh_TW",
+        "zh_TW.UTF-8"
+      };
+    /* Remember which locales are available.  */
+    unsigned char /* bool */ available[SIZEOF (choices)];
+    /* Array of remembered results of gl_locale_name_thread.  */
+    const char *unsaved_names[SIZEOF (choices)][SIZEOF (categories)];
+    /* Array of remembered results of gl_locale_name_thread, stored in safe
+       memory.  */
+    char *saved_names[SIZEOF (choices)][SIZEOF (categories)];
+    unsigned int j;
+
+    for (j = 0; j < SIZEOF (choices); j++)
+      {
+        locale_t locale = newlocale (LC_ALL_MASK, choices[j], NULL);
+        available[j] = (locale != NULL);
+        if (locale != NULL)
+          {
+            unsigned int i;
+
+            uselocale (locale);
+            for (i = 0; i < SIZEOF (categories); i++)
+              {
+                unsaved_names[j][i] = gl_locale_name_thread (categories[i].cat, categories[i].string);
+                saved_names[j][i] = strdup (unsaved_names[j][i]);
+              }
+            uselocale (LC_GLOBAL_LOCALE);
+            freelocale (locale);
+          }
+      }
+    /* Verify the unsaved_names are still valid.  */
+    for (j = 0; j < SIZEOF (choices); j++)
+      if (available[j])
+        {
+          unsigned int i;
+
+          for (i = 0; i < SIZEOF (categories); i++)
+            ASSERT (strcmp (unsaved_names[j][i], saved_names[j][i]) == 0);
+        }
+    /* Allocate many locales, without freeing them.  This is an attempt at
+       overwriting as much of the previously allocated memory as possible.  */
+    for (j = SIZEOF (choices); j > 0; )
+      {
+        j--;
+        if (available[j])
+          {
+            locale_t locale = newlocale (LC_ALL_MASK, choices[j], NULL);
+            unsigned int i;
+
+            ASSERT (locale != NULL);
+            uselocale (locale);
+            for (i = 0; i < SIZEOF (categories); i++)
+              {
+                const char *name = gl_locale_name_thread (categories[i].cat, categories[i].string);
+                ASSERT (strcmp (unsaved_names[j][i], name) == 0);
+              }
+            uselocale (LC_GLOBAL_LOCALE);
+            freelocale (locale);
+          }
+      }
+    /* Verify the unsaved_names are still valid.  */
+    for (j = 0; j < SIZEOF (choices); j++)
+      if (available[j])
+        {
+          unsigned int i;
+
+          for (i = 0; i < SIZEOF (categories); i++)
+            {
+              ASSERT (strcmp (unsaved_names[j][i], saved_names[j][i]) == 0);
+              free (saved_names[j][i]);
+            }
+        }
+  }
+#else
+  /* Check that gl_locale_name_thread always returns NULL.  */
+  ASSERT (gl_locale_name_thread (LC_CTYPE, "LC_CTYPE") == NULL);
+  ASSERT (gl_locale_name_thread (LC_MESSAGES, "LC_MESSAGES") == NULL);
+#endif
+}
+
+/* Test the gl_locale_name_posix() function.  */
+static void
+test_locale_name_posix (void)
+{
+  const char *ret;
+  const char *name;
+
+  /* Get into a defined state,  */
+  setlocale (LC_ALL, "en_US.UTF-8");
+#if HAVE_GOOD_USELOCALE
+  uselocale (LC_GLOBAL_LOCALE);
+#endif
+
+  /* Check that when all environment variables are unset,
+     gl_locale_name_posix returns either NULL or the default locale.  */
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LC_NUMERIC");
+  unsetenv ("LANG");
+  /* Need also to unset all environment variables that specify standard or
+     non-standard locale categories.  Otherwise, on glibc systems, when some
+     of these variables are set and reference a nonexistent locale, the
+     setlocale (LC_ALL, "") call below would fail.  */
+  unsetenv ("LC_COLLATE");
+  unsetenv ("LC_MONETARY");
+  unsetenv ("LC_TIME");
+  unsetenv ("LC_ADDRESS");
+  unsetenv ("LC_IDENTIFICATION");
+  unsetenv ("LC_MEASUREMENT");
+  unsetenv ("LC_NAME");
+  unsetenv ("LC_PAPER");
+  unsetenv ("LC_TELEPHONE");
+  ret = setlocale (LC_ALL, "");
+  ASSERT (ret != NULL);
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+  name = gl_locale_name_posix (LC_NUMERIC, "LC_NUMERIC");
+  ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+
+  /* Check that an empty environment variable is treated like an unset
+     environment variable.  */
+
+  setenv ("LC_ALL", "", 1);
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+
+  unsetenv ("LC_ALL");
+  setenv ("LC_CTYPE", "", 1);
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "", 1);
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  setenv ("LANG", "", 1);
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+
+  /* Check that LC_ALL overrides the others, and LANG is overridden by the
+     others.  */
+
+  setenv ("LC_ALL", "C", 1);
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "C") == 0);
+
+  unsetenv ("LC_ALL");
+  setenv ("LC_CTYPE", "C", 1);
+  setenv ("LC_MESSAGES", "C", 1);
+  unsetenv ("LANG");
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "C") == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  setenv ("LANG", "C", 1);
+  setlocale (LC_ALL, "");
+  name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "C") == 0);
+
+  /* Check mixed situations.  */
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "fr_FR.UTF-8", 1);
+  setenv ("LANG", "de_DE.UTF-8", 1);
+  if (setlocale (LC_ALL, "") != NULL)
+    {
+      name = gl_locale_name_posix (LC_CTYPE, "LC_CTYPE");
+#if defined _WIN32 && !defined __CYGWIN__
+      ASSERT (strcmp (name, "de_DE") == 0 || strcmp (name, "de_DE.UTF-8") == 0);
+#else
+      ASSERT (strcmp (name, "de_DE.UTF-8") == 0);
+#endif
+      name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+      ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+    }
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "fr_FR.UTF-8", 1);
+  unsetenv ("LANG");
+  if (setlocale (LC_ALL, "") != NULL)
+    {
+      name = gl_locale_name_posix (LC_CTYPE, "LC_CTYPE");
+      ASSERT (name == NULL || strcmp (name, gl_locale_name_default ()) == 0);
+      name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+      ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+    }
+
+#if HAVE_GOOD_USELOCALE
+  /* Check that gl_locale_name_posix ignores the thread locale.  */
+  {
+    locale_t locale = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+    if (locale != NULL)
+      {
+        unsetenv ("LC_ALL");
+        unsetenv ("LC_CTYPE");
+        unsetenv ("LC_MESSAGES");
+        setenv ("LANG", "C", 1);
+        setlocale (LC_ALL, "");
+        uselocale (locale);
+        name = gl_locale_name_posix (LC_MESSAGES, "LC_MESSAGES");
+        ASSERT (strcmp (name, "C") == 0);
+        uselocale (LC_GLOBAL_LOCALE);
+        freelocale (locale);
+      }
+  }
+#endif
+}
+
+/* Test the gl_locale_name_environ() function.  */
+static void
+test_locale_name_environ (void)
+{
+  const char *name;
+
+  /* Get into a defined state,  */
+  setlocale (LC_ALL, "en_US.UTF-8");
+#if HAVE_GOOD_USELOCALE
+  uselocale (LC_GLOBAL_LOCALE);
+#endif
+
+  /* Check that when all environment variables are unset,
+     gl_locale_name_environ returns NULL.  */
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LC_NUMERIC");
+  unsetenv ("LANG");
+  ASSERT (gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES") == NULL);
+  ASSERT (gl_locale_name_environ (LC_NUMERIC, "LC_NUMERIC") == NULL);
+
+  /* Check that an empty environment variable is treated like an unset
+     environment variable.  */
+
+  setenv ("LC_ALL", "", 1);
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  ASSERT (gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES") == NULL);
+
+  unsetenv ("LC_ALL");
+  setenv ("LC_CTYPE", "", 1);
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  ASSERT (gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES") == NULL);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "", 1);
+  unsetenv ("LANG");
+  ASSERT (gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES") == NULL);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  setenv ("LANG", "", 1);
+  ASSERT (gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES") == NULL);
+
+  /* Check that LC_ALL overrides the others, and LANG is overridden by the
+     others.  */
+
+  setenv ("LC_ALL", "C", 1);
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  unsetenv ("LANG");
+  name = gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "C") == 0);
+
+  unsetenv ("LC_ALL");
+  setenv ("LC_CTYPE", "C", 1);
+  setenv ("LC_MESSAGES", "C", 1);
+  unsetenv ("LANG");
+  name = gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "C") == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  unsetenv ("LC_MESSAGES");
+  setenv ("LANG", "C", 1);
+  name = gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "C") == 0);
+
+  /* Check mixed situations.  */
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "fr_FR.UTF-8", 1);
+  setenv ("LANG", "de_DE.UTF-8", 1);
+  name = gl_locale_name_environ (LC_CTYPE, "LC_CTYPE");
+  ASSERT (strcmp (name, "de_DE.UTF-8") == 0);
+  name = gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+
+  unsetenv ("LC_ALL");
+  unsetenv ("LC_CTYPE");
+  setenv ("LC_MESSAGES", "fr_FR.UTF-8", 1);
+  unsetenv ("LANG");
+  name = gl_locale_name_environ (LC_CTYPE, "LC_CTYPE");
+  ASSERT (name == NULL);
+  name = gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES");
+  ASSERT (strcmp (name, "fr_FR.UTF-8") == 0);
+
+#if HAVE_GOOD_USELOCALE
+  /* Check that gl_locale_name_environ ignores the thread locale.  */
+  {
+    locale_t locale = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+    if (locale != NULL)
+      {
+        unsetenv ("LC_ALL");
+        unsetenv ("LC_CTYPE");
+        unsetenv ("LC_MESSAGES");
+        setenv ("LANG", "C", 1);
+        setlocale (LC_ALL, "");
+        uselocale (locale);
+        name = gl_locale_name_environ (LC_MESSAGES, "LC_MESSAGES");
+        ASSERT (strcmp (name, "C") == 0);
+        uselocale (LC_GLOBAL_LOCALE);
+        freelocale (locale);
+      }
+  }
+#endif
+}
+
+/* Test the gl_locale_name_default() function.  */
+static void
+test_locale_name_default (void)
+{
+  const char *name = gl_locale_name_default ();
+
+  ASSERT (name != NULL);
+
+  /* Only Mac OS X and Windows have a facility for the user to set the default
+     locale.  */
+#if !((defined __APPLE__ && defined __MACH__) || (defined _WIN32 || defined __CYGWIN__))
+  ASSERT (strcmp (name, "C") == 0);
+#endif
+
+#if HAVE_GOOD_USELOCALE
+  /* Check that gl_locale_name_default ignores the thread locale.  */
+  {
+    locale_t locale = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", NULL);
+    if (locale != NULL)
+      {
+        uselocale (locale);
+        ASSERT (strcmp (gl_locale_name_default (), name) == 0);
+        uselocale (LC_GLOBAL_LOCALE);
+        freelocale (locale);
+      }
+  }
+#endif
+}
+
+int
+main ()
+{
+  test_locale_name ();
+  test_locale_name_thread ();
+  test_locale_name_posix ();
+  test_locale_name_environ ();
+  test_locale_name_default ();
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-lseek.c b/src/grep/gnulib-tests/test-lseek.c
new file mode 100644
index 0000000..9f531d8
--- /dev/null
+++ b/src/grep/gnulib-tests/test-lseek.c
@@ -0,0 +1,109 @@
+/* Test of lseek() function.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake, 2007.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (lseek, off_t, (int, off_t, int));
+
+#include <errno.h>
+
+#include "macros.h"
+
+/* ARGC must be 2; *ARGV[1] is '0' if stdin and stdout are files, '1'
+   if they are pipes, and '2' if they are closed.  Check for proper
+   semantics of lseek.  */
+int
+main (int argc, char **argv)
+{
+  if (argc != 2)
+    return 2;
+  switch (*argv[1])
+    {
+    case '0': /* regular files */
+      ASSERT (lseek (0, (off_t)2, SEEK_SET) == 2);
+      ASSERT (lseek (0, (off_t)-4, SEEK_CUR) == -1);
+      ASSERT (errno == EINVAL);
+      errno = 0;
+#if ! defined __BEOS__
+      /* POSIX says that the last lseek call, when failing, does not change
+         the current offset.  But BeOS sets it to 0.  */
+      ASSERT (lseek (0, (off_t)0, SEEK_CUR) == 2);
+#endif
+#if 0 /* leads to SIGSYS on IRIX 6.5 */
+      ASSERT (lseek (0, (off_t)0, (SEEK_SET | SEEK_CUR | SEEK_END) + 1) == -1);
+      ASSERT (errno == EINVAL);
+#endif
+      ASSERT (lseek (1, (off_t)2, SEEK_SET) == 2);
+      errno = 0;
+      ASSERT (lseek (1, (off_t)-4, SEEK_CUR) == -1);
+      ASSERT (errno == EINVAL);
+      errno = 0;
+#if ! defined __BEOS__
+      /* POSIX says that the last lseek call, when failing, does not change
+         the current offset.  But BeOS sets it to 0.  */
+      ASSERT (lseek (1, (off_t)0, SEEK_CUR) == 2);
+#endif
+#if 0 /* leads to SIGSYS on IRIX 6.5 */
+      ASSERT (lseek (1, (off_t)0, (SEEK_SET | SEEK_CUR | SEEK_END) + 1) == -1);
+      ASSERT (errno == EINVAL);
+#endif
+      break;
+
+    case '1': /* pipes */
+      errno = 0;
+      ASSERT (lseek (0, (off_t)0, SEEK_CUR) == -1);
+      ASSERT (errno == ESPIPE);
+      errno = 0;
+      ASSERT (lseek (1, (off_t)0, SEEK_CUR) == -1);
+      ASSERT (errno == ESPIPE);
+      break;
+
+    case '2': /* closed */
+      /* Explicitly close file descriptors 0 and 1.  The <&- and >&- in the
+         invoking shell are not enough on HP-UX.  */
+      close (0);
+      close (1);
+
+      errno = 0;
+      ASSERT (lseek (0, (off_t)0, SEEK_CUR) == -1);
+      ASSERT (errno == EBADF);
+
+      errno = 0;
+      ASSERT (lseek (1, (off_t)0, SEEK_CUR) == -1);
+      ASSERT (errno == EBADF);
+
+      /* Test behaviour for invalid file descriptors.  */
+      errno = 0;
+      ASSERT (lseek (-1, (off_t)0, SEEK_CUR) == -1);
+      ASSERT (errno == EBADF);
+
+      close (99);
+      errno = 0;
+      ASSERT (lseek (99, (off_t)0, SEEK_CUR) == -1);
+      ASSERT (errno == EBADF);
+
+      break;
+
+    default:
+      return 1;
+    }
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-lseek.sh b/src/grep/gnulib-tests/test-lseek.sh
new file mode 100755
index 0000000..ff206c6
--- /dev/null
+++ b/src/grep/gnulib-tests/test-lseek.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+tmpfiles=
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles=t-lseek.tmp
+# seekable files
+${CHECKER} ./test-lseek${EXEEXT} 0 < "$srcdir/test-lseek.sh" > t-lseek.tmp || exit 1
+
+# pipes
+echo hi | { ${CHECKER} ./test-lseek${EXEEXT} 1; echo $? > t-lseek.tmp; cat > /dev/null; } | cat
+test "`cat t-lseek.tmp`" = "0" || exit 1
+
+# closed descriptors
+${CHECKER} ./test-lseek${EXEEXT} 2 <&- >&- || exit 1
+
+rm -rf $tmpfiles
+exit 0
diff --git a/src/grep/gnulib-tests/test-lstat.c b/src/grep/gnulib-tests/test-lstat.c
new file mode 100644
index 0000000..b8481fb
--- /dev/null
+++ b/src/grep/gnulib-tests/test-lstat.c
@@ -0,0 +1,60 @@
+/* Test of lstat() function.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson, 2008; and Eric Blake, 2009.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+/* Caution: lstat may be a function-like macro.  Although this
+   signature check must pass, it may be the signature of the real (and
+   broken) lstat rather than rpl_lstat.  Most code should not use the
+   address of lstat.  */
+#include "signature.h"
+SIGNATURE_CHECK (lstat, int, (char const *, struct stat *));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "same-inode.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-lstat.t"
+
+#include "test-lstat.h"
+
+/* Wrapper around lstat, which works even if lstat is a function-like
+   macro, where test_lstat_func(lstat) would do the wrong thing.  */
+static int
+do_lstat (char const *name, struct stat *st)
+{
+  return lstat (name, st);
+}
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_lstat_func (do_lstat, true);
+}
diff --git a/src/grep/gnulib-tests/test-lstat.h b/src/grep/gnulib-tests/test-lstat.h
new file mode 100644
index 0000000..08803da
--- /dev/null
+++ b/src/grep/gnulib-tests/test-lstat.h
@@ -0,0 +1,122 @@
+/* Test of lstat() function.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson, 2008; and Eric Blake, 2009.  */
+
+/* This file is designed to test both lstat(n,buf) and
+   fstatat(AT_FDCWD,n,buf,AT_SYMLINK_NOFOLLOW).  FUNC is the function
+   to test.  Assumes that BASE and ASSERT are already defined, and
+   that appropriate headers are already included.  If PRINT, warn
+   before skipping symlink tests with status 77.  */
+
+static int
+test_lstat_func (int (*func) (char const *, struct stat *), bool print)
+{
+  struct stat st1;
+  struct stat st2;
+
+  /* Test for common directories.  */
+  ASSERT (func (".", &st1) == 0);
+  ASSERT (func ("./", &st2) == 0);
+#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
+  ASSERT (SAME_INODE (st1, st2));
+#endif
+  ASSERT (S_ISDIR (st1.st_mode));
+  ASSERT (S_ISDIR (st2.st_mode));
+  ASSERT (func ("/", &st1) == 0);
+  ASSERT (func ("///", &st2) == 0);
+#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
+  ASSERT (SAME_INODE (st1, st2));
+#endif
+  ASSERT (S_ISDIR (st1.st_mode));
+  ASSERT (S_ISDIR (st2.st_mode));
+  ASSERT (func ("..", &st1) == 0);
+  ASSERT (S_ISDIR (st1.st_mode));
+
+  /* Test for error conditions.  */
+  errno = 0;
+  ASSERT (func ("", &st1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("nosuch", &st1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("nosuch/", &st1) == -1);
+  ASSERT (errno == ENOENT);
+
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  ASSERT (func (BASE "file", &st1) == 0);
+  ASSERT (S_ISREG (st1.st_mode));
+  errno = 0;
+  ASSERT (func (BASE "file/", &st1) == -1);
+  ASSERT (errno == ENOTDIR);
+
+  /* Now for some symlink tests, where supported.  We set up:
+     link1 -> directory
+     link2 -> file
+     link3 -> dangling
+     link4 -> loop
+     then test behavior both with and without trailing slash.
+  */
+  if (symlink (".", BASE "link1") != 0)
+    {
+      ASSERT (unlink (BASE "file") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  ASSERT (symlink (BASE "file", BASE "link2") == 0);
+  ASSERT (symlink (BASE "nosuch", BASE "link3") == 0);
+  ASSERT (symlink (BASE "link4", BASE "link4") == 0);
+
+  ASSERT (func (BASE "link1", &st1) == 0);
+  ASSERT (S_ISLNK (st1.st_mode));
+  ASSERT (func (BASE "link1/", &st1) == 0);
+  ASSERT (stat (BASE "link1", &st2) == 0);
+  ASSERT (S_ISDIR (st1.st_mode));
+  ASSERT (S_ISDIR (st2.st_mode));
+#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
+  ASSERT (SAME_INODE (st1, st2));
+#endif
+
+  ASSERT (func (BASE "link2", &st1) == 0);
+  ASSERT (S_ISLNK (st1.st_mode));
+  errno = 0;
+  ASSERT (func (BASE "link2/", &st1) == -1);
+  ASSERT (errno == ENOTDIR);
+
+  ASSERT (func (BASE "link3", &st1) == 0);
+  ASSERT (S_ISLNK (st1.st_mode));
+  errno = 0;
+  ASSERT (func (BASE "link3/", &st1) == -1);
+  ASSERT (errno == ENOENT);
+
+  ASSERT (func (BASE "link4", &st1) == 0);
+  ASSERT (S_ISLNK (st1.st_mode));
+  errno = 0;
+  ASSERT (func (BASE "link4/", &st1) == -1);
+  ASSERT (errno == ELOOP);
+
+  /* Cleanup.  */
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (unlink (BASE "link1") == 0);
+  ASSERT (unlink (BASE "link2") == 0);
+  ASSERT (unlink (BASE "link3") == 0);
+  ASSERT (unlink (BASE "link4") == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-malloc-gnu.c b/src/grep/gnulib-tests/test-malloc-gnu.c
new file mode 100644
index 0000000..0160c6c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-malloc-gnu.c
@@ -0,0 +1,45 @@
+/* Test of malloc function.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <errno.h>
+#include <stdint.h>
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  /* Check that malloc (0) is not a NULL pointer.  */
+  void *volatile p = malloc (0);
+  ASSERT (p != NULL);
+  free (p);
+
+  /* Check that malloc (n) fails when n exceeds PTRDIFF_MAX.  */
+  if (PTRDIFF_MAX < SIZE_MAX)
+    {
+      size_t one = argc != 12345;
+      p = malloc (PTRDIFF_MAX + one);
+      ASSERT (p == NULL);
+      ASSERT (errno == ENOMEM);
+    }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-malloca.c b/src/grep/gnulib-tests/test-malloca.c
new file mode 100644
index 0000000..52d95a5
--- /dev/null
+++ b/src/grep/gnulib-tests/test-malloca.c
@@ -0,0 +1,62 @@
+/* Test of safe automatic memory allocation.
+   Copyright (C) 2005, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
+
+#include <config.h>
+
+#include "malloca.h"
+
+#include <stdlib.h>
+
+static void
+do_allocation (int n)
+{
+  void *volatile ptr = malloca (n);
+  freea (ptr);
+  safe_alloca (n);
+}
+
+void (*func) (int) = do_allocation;
+
+int
+main ()
+{
+  int i;
+
+  /* This slows down malloc a lot.  */
+  unsetenv ("MALLOC_PERTURB_");
+
+  /* Repeat a lot of times, to make sure there's no memory leak.  */
+  for (i = 0; i < 50000; i++)
+    {
+      /* Try various values.
+         n = 0 gave a crash on Alpha with gcc-2.5.8.
+         Some versions of Mac OS X have a stack size limit of 512 KB.  */
+      func (34);
+      func (134);
+      func (399);
+      func (510823);
+      func (129321);
+      func (0);
+      func (4070);
+      func (4095);
+      func (1);
+      func (16582);
+    }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-mbscasecmp.c b/src/grep/gnulib-tests/test-mbscasecmp.c
new file mode 100644
index 0000000..c1b5c8f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbscasecmp.c
@@ -0,0 +1,55 @@
+/* Test of case-insensitive string comparison function.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <locale.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  ASSERT (mbscasecmp ("paragraph", "Paragraph") == 0);
+
+  ASSERT (mbscasecmp ("paragrapH", "parAgRaph") == 0);
+
+  ASSERT (mbscasecmp ("paragraph", "paraLyzed") < 0);
+  ASSERT (mbscasecmp ("paraLyzed", "paragraph") > 0);
+
+  ASSERT (mbscasecmp ("para", "paragraph") < 0);
+  ASSERT (mbscasecmp ("paragraph", "para") > 0);
+
+  /* The following tests shows how mbscasecmp() is different from
+     strcasecmp().  */
+
+  ASSERT (mbscasecmp ("\303\266zg\303\274r", "\303\226ZG\303\234R") == 0); /* özgür */
+  ASSERT (mbscasecmp ("\303\226ZG\303\234R", "\303\266zg\303\274r") == 0); /* özgür */
+
+  /* This test shows how strings of different size can compare equal.  */
+  ASSERT (mbscasecmp ("turkish", "TURK\304\260SH") == 0);
+  ASSERT (mbscasecmp ("TURK\304\260SH", "turkish") == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-mbscasecmp.sh b/src/grep/gnulib-tests/test-mbscasecmp.sh
new file mode 100755
index 0000000..5201951
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbscasecmp.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific Turkish locale is installed.
+: ${LOCALE_TR_UTF8=tr_TR.UTF-8}
+if test $LOCALE_TR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no turkish Unicode locale is installed"
+  else
+    echo "Skipping test: no turkish Unicode locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_TR_UTF8 \
+${CHECKER} ./test-mbscasecmp${EXEEXT}
diff --git a/src/grep/gnulib-tests/test-mbsinit.c b/src/grep/gnulib-tests/test-mbsinit.c
new file mode 100644
index 0000000..bda3a3b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbsinit.c
@@ -0,0 +1,55 @@
+/* Test of test for initial conversion state.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (mbsinit, int, (const mbstate_t *));
+
+#include <locale.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  static mbstate_t state;
+
+  ASSERT (mbsinit (NULL));
+
+  ASSERT (mbsinit (&state));
+
+  if (argc > 1)
+    {
+      static const char input[1] = "\303";
+      wchar_t wc;
+      size_t ret;
+
+      /* configure should already have checked that the locale is supported.  */
+      if (setlocale (LC_ALL, "") == NULL)
+        return 1;
+
+      ret = mbrtowc (&wc, input, 1, &state);
+      ASSERT (ret == (size_t)(-2));
+      ASSERT (!mbsinit (&state));
+    }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-mbsinit.sh b/src/grep/gnulib-tests/test-mbsinit.sh
new file mode 100755
index 0000000..7308714
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbsinit.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no french Unicode locale is installed"
+  else
+    echo "Skipping test: no french Unicode locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR_UTF8 \
+${CHECKER} ./test-mbsinit${EXEEXT}
diff --git a/src/grep/gnulib-tests/test-mbsrtowcs.c b/src/grep/gnulib-tests/test-mbsrtowcs.c
new file mode 100644
index 0000000..1489978
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbsrtowcs.c
@@ -0,0 +1,293 @@
+/* Test of conversion of string to wide string.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (mbsrtowcs, size_t, (wchar_t *, char const **, size_t,
+                                     mbstate_t *));
+
+#include <locale.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Test NUL byte input.  */
+  {
+    const char *src;
+
+    memset (&state, '\0', sizeof (mbstate_t));
+
+    src = "";
+    ret = mbsrtowcs (NULL, &src, 0, &state);
+    ASSERT (ret == 0);
+    ASSERT (mbsinit (&state));
+
+    src = "";
+    ret = mbsrtowcs (NULL, &src, 1, &state);
+    ASSERT (ret == 0);
+    ASSERT (mbsinit (&state));
+
+    wc = (wchar_t) 0xBADFACE;
+    src = "";
+    ret = mbsrtowcs (&wc, &src, 0, &state);
+    ASSERT (ret == 0);
+    ASSERT (wc == (wchar_t) 0xBADFACE);
+    ASSERT (mbsinit (&state));
+
+    wc = (wchar_t) 0xBADFACE;
+    src = "";
+    ret = mbsrtowcs (&wc, &src, 1, &state);
+    ASSERT (ret == 0);
+    ASSERT (wc == 0);
+    ASSERT (mbsinit (&state));
+  }
+
+  if (argc > 1)
+    {
+      int unlimited;
+
+      for (unlimited = 0; unlimited < 2; unlimited++)
+        {
+          #define BUFSIZE 10
+          wchar_t buf[BUFSIZE];
+          const char *src;
+          mbstate_t temp_state;
+
+          {
+            size_t i;
+            for (i = 0; i < BUFSIZE; i++)
+              buf[i] = (wchar_t) 0xBADFACE;
+          }
+
+          switch (argv[1][0])
+            {
+            case '1':
+              /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
+              {
+                char input[] = "B\374\337er"; /* "Büßer" */
+                memset (&state, '\0', sizeof (mbstate_t));
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input, 1, &state);
+                ASSERT (ret == 1);
+                ASSERT (wc == 'B');
+                ASSERT (mbsinit (&state));
+                input[0] = '\0';
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input + 1, 1, &state);
+                ASSERT (ret == 1);
+                ASSERT (wctob (wc) == (unsigned char) '\374');
+                ASSERT (mbsinit (&state));
+                input[1] = '\0';
+
+                src = input + 2;
+                temp_state = state;
+                ret = mbsrtowcs (NULL, &src, unlimited ? BUFSIZE : 1, &temp_state);
+                ASSERT (ret == 3);
+                ASSERT (src == input + 2);
+                ASSERT (mbsinit (&state));
+
+                src = input + 2;
+                ret = mbsrtowcs (buf, &src, unlimited ? BUFSIZE : 1, &state);
+                ASSERT (ret == (unlimited ? 3 : 1));
+                ASSERT (src == (unlimited ? NULL : input + 3));
+                ASSERT (wctob (buf[0]) == (unsigned char) '\337');
+                if (unlimited)
+                  {
+                    ASSERT (buf[1] == 'e');
+                    ASSERT (buf[2] == 'r');
+                    ASSERT (buf[3] == 0);
+                    ASSERT (buf[4] == (wchar_t) 0xBADFACE);
+                  }
+                else
+                  ASSERT (buf[1] == (wchar_t) 0xBADFACE);
+                ASSERT (mbsinit (&state));
+              }
+              break;
+
+            case '2':
+              /* Locale encoding is UTF-8.  */
+              {
+                char input[] = "B\303\274\303\237er"; /* "Büßer" */
+                memset (&state, '\0', sizeof (mbstate_t));
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input, 1, &state);
+                ASSERT (ret == 1);
+                ASSERT (wc == 'B');
+                ASSERT (mbsinit (&state));
+                input[0] = '\0';
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input + 1, 1, &state);
+                ASSERT (ret == (size_t)(-2));
+                ASSERT (wc == (wchar_t) 0xBADFACE);
+                ASSERT (!mbsinit (&state));
+                input[1] = '\0';
+
+                src = input + 2;
+                temp_state = state;
+                ret = mbsrtowcs (NULL, &src, unlimited ? BUFSIZE : 2, &temp_state);
+                ASSERT (ret == 4);
+                ASSERT (src == input + 2);
+                ASSERT (!mbsinit (&state));
+
+                src = input + 2;
+                ret = mbsrtowcs (buf, &src, unlimited ? BUFSIZE : 2, &state);
+                ASSERT (ret == (unlimited ? 4 : 2));
+                ASSERT (src == (unlimited ? NULL : input + 5));
+                ASSERT (wctob (buf[0]) == EOF);
+                ASSERT (wctob (buf[1]) == EOF);
+                if (unlimited)
+                  {
+                    ASSERT (buf[2] == 'e');
+                    ASSERT (buf[3] == 'r');
+                    ASSERT (buf[4] == 0);
+                    ASSERT (buf[5] == (wchar_t) 0xBADFACE);
+                  }
+                else
+                  ASSERT (buf[2] == (wchar_t) 0xBADFACE);
+                ASSERT (mbsinit (&state));
+              }
+              break;
+
+            case '3':
+              /* Locale encoding is EUC-JP.  */
+              {
+                char input[] = "<\306\374\313\334\270\354>"; /* "<日本語>" */
+                memset (&state, '\0', sizeof (mbstate_t));
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input, 1, &state);
+                ASSERT (ret == 1);
+                ASSERT (wc == '<');
+                ASSERT (mbsinit (&state));
+                input[0] = '\0';
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input + 1, 2, &state);
+                ASSERT (ret == 2);
+                ASSERT (wctob (wc) == EOF);
+                ASSERT (mbsinit (&state));
+                input[1] = '\0';
+                input[2] = '\0';
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input + 3, 1, &state);
+                ASSERT (ret == (size_t)(-2));
+                ASSERT (wc == (wchar_t) 0xBADFACE);
+                ASSERT (!mbsinit (&state));
+                input[3] = '\0';
+
+                src = input + 4;
+                temp_state = state;
+                ret = mbsrtowcs (NULL, &src, unlimited ? BUFSIZE : 2, &temp_state);
+                ASSERT (ret == 3);
+                ASSERT (src == input + 4);
+                ASSERT (!mbsinit (&state));
+
+                src = input + 4;
+                ret = mbsrtowcs (buf, &src, unlimited ? BUFSIZE : 2, &state);
+                ASSERT (ret == (unlimited ? 3 : 2));
+                ASSERT (src == (unlimited ? NULL : input + 7));
+                ASSERT (wctob (buf[0]) == EOF);
+                ASSERT (wctob (buf[1]) == EOF);
+                if (unlimited)
+                  {
+                    ASSERT (buf[2] == '>');
+                    ASSERT (buf[3] == 0);
+                    ASSERT (buf[4] == (wchar_t) 0xBADFACE);
+                  }
+                else
+                  ASSERT (buf[2] == (wchar_t) 0xBADFACE);
+                ASSERT (mbsinit (&state));
+              }
+              break;
+
+            case '4':
+              /* Locale encoding is GB18030.  */
+              {
+                char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+                memset (&state, '\0', sizeof (mbstate_t));
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input, 1, &state);
+                ASSERT (ret == 1);
+                ASSERT (wc == 'B');
+                ASSERT (mbsinit (&state));
+                input[0] = '\0';
+
+                wc = (wchar_t) 0xBADFACE;
+                ret = mbrtowc (&wc, input + 1, 1, &state);
+                ASSERT (ret == (size_t)(-2));
+                ASSERT (wc == (wchar_t) 0xBADFACE);
+                ASSERT (!mbsinit (&state));
+                input[1] = '\0';
+
+                src = input + 2;
+                temp_state = state;
+                ret = mbsrtowcs (NULL, &src, unlimited ? BUFSIZE : 2, &temp_state);
+                ASSERT (ret == 4);
+                ASSERT (src == input + 2);
+                ASSERT (!mbsinit (&state));
+
+                src = input + 2;
+                ret = mbsrtowcs (buf, &src, unlimited ? BUFSIZE : 2, &state);
+                ASSERT (ret == (unlimited ? 4 : 2));
+                ASSERT (src == (unlimited ? NULL : input + 7));
+                ASSERT (wctob (buf[0]) == EOF);
+                ASSERT (wctob (buf[1]) == EOF);
+                if (unlimited)
+                  {
+                    ASSERT (buf[2] == 'e');
+                    ASSERT (buf[3] == 'r');
+                    ASSERT (buf[4] == 0);
+                    ASSERT (buf[5] == (wchar_t) 0xBADFACE);
+                  }
+                else
+                  ASSERT (buf[2] == (wchar_t) 0xBADFACE);
+                ASSERT (mbsinit (&state));
+              }
+              break;
+
+            default:
+              return 1;
+            }
+        }
+
+      return 0;
+    }
+
+  return 1;
+}
diff --git a/src/grep/gnulib-tests/test-mbsrtowcs1.sh b/src/grep/gnulib-tests/test-mbsrtowcs1.sh
new file mode 100755
index 0000000..66ba231
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbsrtowcs1.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no traditional french locale is installed"
+  else
+    echo "Skipping test: no traditional french locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR \
+${CHECKER} ./test-mbsrtowcs${EXEEXT} 1
diff --git a/src/grep/gnulib-tests/test-mbsrtowcs2.sh b/src/grep/gnulib-tests/test-mbsrtowcs2.sh
new file mode 100755
index 0000000..6786efd
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbsrtowcs2.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no french Unicode locale is installed"
+  else
+    echo "Skipping test: no french Unicode locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR_UTF8 \
+${CHECKER} ./test-mbsrtowcs${EXEEXT} 2
diff --git a/src/grep/gnulib-tests/test-mbsrtowcs3.sh b/src/grep/gnulib-tests/test-mbsrtowcs3.sh
new file mode 100755
index 0000000..54e9832
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbsrtowcs3.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific EUC-JP locale is installed.
+: ${LOCALE_JA=ja_JP}
+if test $LOCALE_JA = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no traditional japanese locale is installed"
+  else
+    echo "Skipping test: no traditional japanese locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_JA \
+${CHECKER} ./test-mbsrtowcs${EXEEXT} 3
diff --git a/src/grep/gnulib-tests/test-mbsrtowcs4.sh b/src/grep/gnulib-tests/test-mbsrtowcs4.sh
new file mode 100755
index 0000000..8acda08
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbsrtowcs4.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific GB18030 locale is installed.
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+if test $LOCALE_ZH_CN = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no transitional chinese locale is installed"
+  else
+    echo "Skipping test: no transitional chinese locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_ZH_CN \
+${CHECKER} ./test-mbsrtowcs${EXEEXT} 4
diff --git a/src/grep/gnulib-tests/test-mbsstr1.c b/src/grep/gnulib-tests/test-mbsstr1.c
new file mode 100644
index 0000000..a34cfe6
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbsstr1.c
@@ -0,0 +1,128 @@
+/* Test of searching in a string.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <stdlib.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* This test is executed in the C locale.  */
+
+  {
+    const char input[] = "foo";
+    const char *result = mbsstr (input, "");
+    ASSERT (result == input);
+  }
+
+  {
+    const char input[] = "foo";
+    const char *result = mbsstr (input, "o");
+    ASSERT (result == input + 1);
+  }
+
+  {
+    const char input[] = "ABC ABCDAB ABCDABCDABDE";
+    const char *result = mbsstr (input, "ABCDABD");
+    ASSERT (result == input + 15);
+  }
+
+  {
+    const char input[] = "ABC ABCDAB ABCDABCDABDE";
+    const char *result = mbsstr (input, "ABCDABE");
+    ASSERT (result == NULL);
+  }
+
+  /* Check that a very long haystack is handled quickly if the needle is
+     short and occurs near the beginning.  */
+  {
+    size_t repeat = 10000;
+    size_t m = 1000000;
+    const char *needle =
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
+    char *haystack = (char *) malloc (m + 1);
+    if (haystack != NULL)
+      {
+        memset (haystack, 'A', m);
+        haystack[0] = 'B';
+        haystack[m] = '\0';
+
+        for (; repeat > 0; repeat--)
+          {
+            ASSERT (mbsstr (haystack, needle) == haystack + 1);
+          }
+
+        free (haystack);
+      }
+  }
+
+  /* Check that a very long needle is discarded quickly if the haystack is
+     short.  */
+  {
+    size_t repeat = 10000;
+    size_t m = 1000000;
+    const char *haystack =
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+      "ABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAB";
+    char *needle = (char *) malloc (m + 1);
+    if (needle != NULL)
+      {
+        memset (needle, 'A', m);
+        needle[m] = '\0';
+
+        for (; repeat > 0; repeat--)
+          {
+            ASSERT (mbsstr (haystack, needle) == NULL);
+          }
+
+        free (needle);
+      }
+  }
+
+  /* Check that the asymptotic worst-case complexity is not quadratic.  */
+  {
+    size_t m = 1000000;
+    char *haystack = (char *) malloc (2 * m + 2);
+    char *needle = (char *) malloc (m + 2);
+    if (haystack != NULL && needle != NULL)
+      {
+        const char *result;
+
+        memset (haystack, 'A', 2 * m);
+        haystack[2 * m] = 'B';
+        haystack[2 * m + 1] = '\0';
+
+        memset (needle, 'A', m);
+        needle[m] = 'B';
+        needle[m + 1] = '\0';
+
+        result = mbsstr (haystack, needle);
+        ASSERT (result == haystack + m);
+      }
+    free (needle);
+    free (haystack);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-mbsstr2.c b/src/grep/gnulib-tests/test-mbsstr2.c
new file mode 100644
index 0000000..6727358
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbsstr2.c
@@ -0,0 +1,141 @@
+/* Test of searching in a string.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <locale.h>
+#include <stdlib.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  {
+    const char input[] = "f\303\266\303\266";
+    const char *result = mbsstr (input, "");
+    ASSERT (result == input);
+  }
+
+  {
+    const char input[] = "f\303\266\303\266";
+    const char *result = mbsstr (input, "\303\266");
+    ASSERT (result == input + 1);
+  }
+
+  {
+    const char input[] = "f\303\266\303\266";
+    const char *result = mbsstr (input, "\266\303");
+    ASSERT (result == NULL);
+  }
+
+  {
+    const char input[] = "\303\204BC \303\204BCD\303\204B \303\204BCD\303\204BCD\303\204BDE"; /* "ÄBC ÄBCDÄB ÄBCDÄBCDÄBDE" */
+    const char *result = mbsstr (input, "\303\204BCD\303\204BD"); /* "ÄBCDÄBD" */
+    ASSERT (result == input + 19);
+  }
+
+  {
+    const char input[] = "\303\204BC \303\204BCD\303\204B \303\204BCD\303\204BCD\303\204BDE"; /* "ÄBC ÄBCDÄB ÄBCDÄBCDÄBDE" */
+    const char *result = mbsstr (input, "\303\204BCD\303\204BE"); /* "ÄBCDÄBE" */
+    ASSERT (result == NULL);
+  }
+
+  /* Check that a very long haystack is handled quickly if the needle is
+     short and occurs near the beginning.  */
+  {
+    size_t repeat = 10000;
+    size_t m = 1000000;
+    const char *needle =
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
+    char *haystack = (char *) malloc (m + 1);
+    if (haystack != NULL)
+      {
+        memset (haystack, 'A', m);
+        haystack[0] = '\303'; haystack[1] = '\204';
+        haystack[m] = '\0';
+
+        for (; repeat > 0; repeat--)
+          {
+            ASSERT (mbsstr (haystack, needle) == haystack + 2);
+          }
+
+        free (haystack);
+      }
+  }
+
+  /* Check that a very long needle is discarded quickly if the haystack is
+     short.  */
+  {
+    size_t repeat = 10000;
+    size_t m = 1000000;
+    const char *haystack =
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+      "A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207"
+      "A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207"
+      "A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207"
+      "A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207"
+      "A\303\207A\303\207A\303\207A\303\207A\303\207A\303\207";
+    char *needle = (char *) malloc (m + 1);
+    if (needle != NULL)
+      {
+        memset (needle, 'A', m);
+        needle[m] = '\0';
+
+        for (; repeat > 0; repeat--)
+          {
+            ASSERT (mbsstr (haystack, needle) == NULL);
+          }
+
+        free (needle);
+      }
+  }
+
+  /* Check that the asymptotic worst-case complexity is not quadratic.  */
+  {
+    size_t m = 1000000;
+    char *haystack = (char *) malloc (2 * m + 3);
+    char *needle = (char *) malloc (m + 3);
+    if (haystack != NULL && needle != NULL)
+      {
+        const char *result;
+
+        memset (haystack, 'A', 2 * m);
+        haystack[2 * m] = '\303'; haystack[2 * m + 1] = '\207';
+        haystack[2 * m + 2] = '\0';
+
+        memset (needle, 'A', m);
+        needle[m] = '\303'; needle[m + 1] = '\207';
+        needle[m + 2] = '\0';
+
+        result = mbsstr (haystack, needle);
+        ASSERT (result == haystack + m);
+      }
+    free (needle);
+    free (haystack);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-mbsstr2.sh b/src/grep/gnulib-tests/test-mbsstr2.sh
new file mode 100755
index 0000000..5ef7139
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbsstr2.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no french Unicode locale is installed"
+  else
+    echo "Skipping test: no french Unicode locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_FR_UTF8 \
+${CHECKER} ./test-mbsstr2${EXEEXT}
diff --git a/src/grep/gnulib-tests/test-mbsstr3.c b/src/grep/gnulib-tests/test-mbsstr3.c
new file mode 100644
index 0000000..91834df
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbsstr3.c
@@ -0,0 +1,81 @@
+/* Test of searching in a string.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <locale.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Tests with a character < 0x30.  */
+  {
+    const char input[] = "\312\276\300\375 \312\276\300\375 \312\276\300\375"; /* "示例 示例 示例" */
+    const char *result = mbsstr (input, " ");
+    ASSERT (result == input + 4);
+  }
+
+  {
+    const char input[] = "\312\276\300\375"; /* "示例" */
+    const char *result = mbsstr (input, " ");
+    ASSERT (result == NULL);
+  }
+
+  /* Tests with a character >= 0x30.  */
+  {
+    const char input[] = "\272\305123\324\313\320\320\241\243"; /* "�123�行。" */
+    const char *result = mbsstr (input, "2");
+    ASSERT (result == input + 3);
+  }
+
+  /* The following tests show how mbsstr() is different from strstr().  */
+
+  {
+    const char input[] = "\313\320\320\320"; /* "诵行" */
+    const char *result = mbsstr (input, "\320\320"); /* "行" */
+    ASSERT (result == input + 2);
+  }
+
+  {
+    const char input[] = "\203\062\332\066123\324\313\320\320\241\243"; /* "씋123�行。" */
+    const char *result = mbsstr (input, "2");
+    ASSERT (result == input + 5);
+  }
+
+  {
+    const char input[] = "\312\276\300\375 \312\276\300\375 \312\276\300\375"; /* "示例 示例 示例" */
+    const char *result = mbsstr (input, "\276\300"); /* "纠" */
+    ASSERT (result == NULL);
+  }
+
+  {
+    const char input[] = "\312\276\300\375 \312\276\300\375 \312\276\300\375"; /* "示例 示例 示例" */
+    const char *result = mbsstr (input, "\375 "); /* invalid multibyte sequence */
+    ASSERT (result == NULL);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-mbsstr3.sh b/src/grep/gnulib-tests/test-mbsstr3.sh
new file mode 100755
index 0000000..539f9c0
--- /dev/null
+++ b/src/grep/gnulib-tests/test-mbsstr3.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Test whether a specific GB18030 locale is installed.
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+if test $LOCALE_ZH_CN = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no chinese GB18030 locale is installed"
+  else
+    echo "Skipping test: no chinese GB18030 locale is supported"
+  fi
+  exit 77
+fi
+
+LC_ALL=$LOCALE_ZH_CN \
+${CHECKER} ./test-mbsstr3${EXEEXT}
diff --git a/src/grep/gnulib-tests/test-memchr.c b/src/grep/gnulib-tests/test-memchr.c
new file mode 100644
index 0000000..1357d08
--- /dev/null
+++ b/src/grep/gnulib-tests/test-memchr.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2008-2021 Free Software Foundation, Inc.
+ * Written by Eric Blake and Bruno Haible
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (memchr, void *, (void const *, int, size_t));
+
+#include <stdlib.h>
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+/* Calculating void * + int is not portable, so this wrapper converts
+   to char * to make the tests easier to write.  */
+#define MEMCHR (char *) memchr
+
+int
+main (void)
+{
+  size_t n = 0x100000;
+  char *input = malloc (n);
+  ASSERT (input);
+
+  input[0] = 'a';
+  input[1] = 'b';
+  memset (input + 2, 'c', 1024);
+  memset (input + 1026, 'd', n - 1028);
+  input[n - 2] = 'e';
+  input[n - 1] = 'a';
+
+  /* Basic behavior tests.  */
+  ASSERT (MEMCHR (input, 'a', n) == input);
+
+  ASSERT (MEMCHR (input, 'a', 0) == NULL);
+
+  {
+    void *page_boundary = zerosize_ptr ();
+    if (page_boundary)
+      ASSERT (MEMCHR (page_boundary, 'a', 0) == NULL);
+  }
+
+  ASSERT (MEMCHR (input, 'b', n) == input + 1);
+  ASSERT (MEMCHR (input, 'c', n) == input + 2);
+  ASSERT (MEMCHR (input, 'd', n) == input + 1026);
+
+  ASSERT (MEMCHR (input + 1, 'a', n - 1) == input + n - 1);
+  ASSERT (MEMCHR (input + 1, 'e', n - 1) == input + n - 2);
+  ASSERT (MEMCHR (input + 1, 0x789abc00 | 'e', n - 1) == input + n - 2);
+
+  ASSERT (MEMCHR (input, 'f', n) == NULL);
+  ASSERT (MEMCHR (input, '\0', n) == NULL);
+
+  /* Check that a very long haystack is handled quickly if the byte is
+     found near the beginning.  */
+  {
+    size_t repeat = 10000;
+    for (; repeat > 0; repeat--)
+      {
+        ASSERT (MEMCHR (input, 'c', n) == input + 2);
+      }
+  }
+
+  /* Alignment tests.  */
+  {
+    int i, j;
+    for (i = 0; i < 32; i++)
+      {
+        for (j = 0; j < 256; j++)
+          input[i + j] = j;
+        for (j = 0; j < 256; j++)
+          {
+            ASSERT (MEMCHR (input + i, j, 256) == input + i + j);
+          }
+      }
+  }
+
+  /* Check that memchr() does not read past the first occurrence of the
+     byte being searched.  See the Austin Group's clarification
+     <https://www.opengroup.org/austin/docs/austin_454.txt>.
+     Test both '\0' and something else, since some implementations
+     special-case searching for NUL.
+  */
+  {
+    char *page_boundary = (char *) zerosize_ptr ();
+    /* Too small, and we miss cache line boundary tests; too large,
+       and the test takes cubically longer to complete.  */
+    int limit = 257;
+
+    if (page_boundary != NULL)
+      {
+        for (n = 1; n <= limit; n++)
+          {
+            char *mem = page_boundary - n;
+            memset (mem, 'X', n);
+            ASSERT (MEMCHR (mem, 'U', n) == NULL);
+            ASSERT (MEMCHR (mem, 0, n) == NULL);
+
+            {
+              size_t i;
+              size_t k;
+
+              for (i = 0; i < n; i++)
+                {
+                  mem[i] = 'U';
+                  for (k = i + 1; k < n + limit; k++)
+                    ASSERT (MEMCHR (mem, 'U', k) == mem + i);
+                  mem[i] = 0;
+                  for (k = i + 1; k < n + limit; k++)
+                    ASSERT (MEMCHR (mem, 0, k) == mem + i);
+                  mem[i] = 'X';
+                }
+            }
+          }
+      }
+  }
+
+  free (input);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-memchr2.c b/src/grep/gnulib-tests/test-memchr2.c
new file mode 100644
index 0000000..abaa18e
--- /dev/null
+++ b/src/grep/gnulib-tests/test-memchr2.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2008-2021 Free Software Foundation, Inc.
+ * Written by Eric Blake
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "memchr2.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+/* Calculating void * + int is not portable, so this wrapper converts
+   to char * to make the tests easier to write.  */
+#define MEMCHR2 (char *) memchr2
+
+int
+main (void)
+{
+  size_t n = 0x100000;
+  char *input = malloc (n);
+  ASSERT (input);
+
+  input[0] = 'a';
+  input[1] = 'b';
+  memset (input + 2, 'c', 1024);
+  memset (input + 1026, 'd', n - 1028);
+  input[n - 2] = 'e';
+  input[n - 1] = 'a';
+
+  /* Basic behavior tests.  */
+  ASSERT (MEMCHR2 (input, 'a', 'b', n) == input);
+  ASSERT (MEMCHR2 (input, 'b', 'a', n) == input);
+
+  ASSERT (MEMCHR2 (input, 'a', 'b', 0) == NULL);
+  void *page_boundary = zerosize_ptr ();
+  if (page_boundary)
+    ASSERT (MEMCHR2 (page_boundary, 'a', 'b', 0) == NULL);
+
+  ASSERT (MEMCHR2 (input, 'b', 'd', n) == input + 1);
+  ASSERT (MEMCHR2 (input + 2, 'b', 'd', n - 2) == input + 1026);
+
+  ASSERT (MEMCHR2 (input, 'd', 'e', n) == input + 1026);
+  ASSERT (MEMCHR2 (input, 'e', 'd', n) == input + 1026);
+
+  ASSERT (MEMCHR2 (input + 1, 'a', 'e', n - 1) == input + n - 2);
+  ASSERT (MEMCHR2 (input + 1, 'e', 'a', n - 1) == input + n - 2);
+
+  ASSERT (MEMCHR2 (input, 'f', 'g', n) == NULL);
+  ASSERT (MEMCHR2 (input, 'f', '\0', n) == NULL);
+
+  ASSERT (MEMCHR2 (input, 'a', 'a', n) == input);
+  ASSERT (MEMCHR2 (input + 1, 'a', 'a', n - 1) == input + n - 1);
+  ASSERT (MEMCHR2 (input, 'f', 'f', n) == NULL);
+
+  /* Check that a very long haystack is handled quickly if one of the
+     two bytes is found near the beginning.  */
+  {
+    size_t repeat = 10000;
+    for (; repeat > 0; repeat--)
+      {
+        ASSERT (MEMCHR2 (input, 'c', 'e', n) == input + 2);
+        ASSERT (MEMCHR2 (input, 'e', 'c', n) == input + 2);
+        ASSERT (MEMCHR2 (input, 'c', '\0', n) == input + 2);
+        ASSERT (MEMCHR2 (input, '\0', 'c', n) == input + 2);
+      }
+  }
+
+  /* Alignment tests.  */
+  {
+    int i, j;
+    for (i = 0; i < 32; i++)
+      {
+        for (j = 0; j < 256; j++)
+          input[i + j] = j;
+        for (j = 0; j < 256; j++)
+          {
+            ASSERT (MEMCHR2 (input + i, j, 0xff, 256) == input + i + j);
+            ASSERT (MEMCHR2 (input + i, 0xff, j, 256) == input + i + j);
+          }
+      }
+  }
+
+  free (input);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-memrchr.c b/src/grep/gnulib-tests/test-memrchr.c
new file mode 100644
index 0000000..9df55c1
--- /dev/null
+++ b/src/grep/gnulib-tests/test-memrchr.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2008-2021 Free Software Foundation, Inc.
+ * Written by Eric Blake and Bruno Haible
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (memrchr, void *, (void const *, int, size_t));
+
+#include <stdlib.h>
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+/* Work around GCC bug 101494.  */
+#if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
+# pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif
+
+/* Calculating void * + int is not portable, so this wrapper converts
+   to char * to make the tests easier to write.  */
+#define MEMRCHR (char *) memrchr
+
+int
+main (void)
+{
+  size_t n = 0x100000;
+  char *input = malloc (n);
+  ASSERT (input);
+
+  input[n - 1] = 'a';
+  input[n - 2] = 'b';
+  memset (input + n - 1026, 'c', 1024);
+  memset (input + 2, 'd', n - 1028);
+  input[1] = 'e';
+  input[0] = 'a';
+
+  /* Basic behavior tests.  */
+  ASSERT (MEMRCHR (input, 'a', n) == input + n - 1);
+
+  ASSERT (MEMRCHR (input, 'a', 0) == NULL);
+  void *page_boundary = zerosize_ptr ();
+  if (page_boundary)
+    ASSERT (MEMRCHR (page_boundary, 'a', 0) == NULL);
+
+  ASSERT (MEMRCHR (input, 'b', n) == input + n - 2);
+  ASSERT (MEMRCHR (input, 'c', n) == input + n - 3);
+  ASSERT (MEMRCHR (input, 'd', n) == input + n - 1027);
+
+  ASSERT (MEMRCHR (input, 'a', n - 1) == input);
+  ASSERT (MEMRCHR (input, 'e', n - 1) == input + 1);
+
+  ASSERT (MEMRCHR (input, 'f', n) == NULL);
+  ASSERT (MEMRCHR (input, '\0', n) == NULL);
+
+  /* Check that a very long haystack is handled quickly if the byte is
+     found near the end.  */
+  {
+    size_t repeat = 10000;
+    for (; repeat > 0; repeat--)
+      {
+        ASSERT (MEMRCHR (input, 'c', n) == input + n - 3);
+      }
+  }
+
+  /* Alignment tests.  */
+  {
+    int i, j;
+    for (i = 0; i < 32; i++)
+      {
+        for (j = 0; j < 256; j++)
+          input[i + j] = j;
+        for (j = 0; j < 256; j++)
+          {
+            ASSERT (MEMRCHR (input + i, j, 256) == input + i + j);
+          }
+      }
+  }
+
+  free (input);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-nanosleep.c b/src/grep/gnulib-tests/test-nanosleep.c
new file mode 100644
index 0000000..4464006
--- /dev/null
+++ b/src/grep/gnulib-tests/test-nanosleep.c
@@ -0,0 +1,83 @@
+/* Test of nanosleep() function.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <time.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (nanosleep, int, (struct timespec const *, struct timespec *));
+
+#include <errno.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#if HAVE_DECL_ALARM
+static void
+handle_alarm (int sig)
+{
+  if (sig != SIGALRM)
+    _exit (1);
+}
+#endif
+
+int
+main (void)
+{
+  struct timespec ts;
+
+  ts.tv_sec = 1000;
+  ts.tv_nsec = -1;
+  errno = 0;
+  ASSERT (nanosleep (&ts, NULL) == -1);
+  ASSERT (errno == EINVAL);
+  ts.tv_nsec = 1000000000;
+  errno = 0;
+  ASSERT (nanosleep (&ts, NULL) == -1);
+  ASSERT (errno == EINVAL);
+
+  ts.tv_sec = 0;
+  ts.tv_nsec = 1;
+  ASSERT (nanosleep (&ts, &ts) == 0);
+  /* Remaining time is only defined on EINTR failure; but on success,
+     it is typically either 0 or unchanged from input.  At any rate,
+     it shouldn't be randomly changed to unrelated values.  */
+  ASSERT (ts.tv_sec == 0);
+  ASSERT (ts.tv_nsec == 0 || ts.tv_nsec == 1);
+  ts.tv_nsec = 0;
+  ASSERT (nanosleep (&ts, NULL) == 0);
+
+#if HAVE_DECL_ALARM
+  {
+    const time_t pentecost = 50 * 24 * 60 * 60; /* 50 days.  */
+    signal (SIGALRM, handle_alarm);
+    alarm (1);
+    ts.tv_sec = pentecost;
+    ts.tv_nsec = 999999999;
+    errno = 0;
+    ASSERT (nanosleep (&ts, &ts) == -1);
+    ASSERT (errno == EINTR);
+    ASSERT (pentecost - 10 < ts.tv_sec && ts.tv_sec <= pentecost);
+    ASSERT (0 <= ts.tv_nsec && ts.tv_nsec <= 999999999);
+  }
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-netinet_in.c b/src/grep/gnulib-tests/test-netinet_in.c
new file mode 100644
index 0000000..c0de97f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-netinet_in.c
@@ -0,0 +1,27 @@
+/* Test of <netinet/in.h> substitute.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <netinet/in.h>
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-nl_langinfo-mt.c b/src/grep/gnulib-tests/test-nl_langinfo-mt.c
new file mode 100644
index 0000000..5ff6490
--- /dev/null
+++ b/src/grep/gnulib-tests/test-nl_langinfo-mt.c
@@ -0,0 +1,253 @@
+/* Multithread-safety test for nl_langinfo().
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+/* Work around GCC bug 44511.  */
+#if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
+# pragma GCC diagnostic ignored "-Wreturn-type"
+#endif
+
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+
+/* Specification.  */
+#include <langinfo.h>
+
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "glthread/thread.h"
+
+
+/* Some common locale names.  */
+
+#if defined _WIN32 && !defined __CYGWIN__
+# define ENGLISH "English_United States"
+# define FRENCH  "French_France"
+# define GERMAN  "German_Germany"
+# define ENCODING ".1252"
+#else
+# define ENGLISH "en_US"
+# define FRENCH  "fr_FR"
+# define GERMAN  "de_DE"
+# if defined __sgi
+#  define ENCODING ".ISO8859-15"
+# elif defined __hpux
+#  define ENCODING ".utf8"
+# else
+#  define ENCODING ".UTF-8"
+# endif
+#endif
+
+static const char LOCALE1[] = ENGLISH ENCODING;
+static const char LOCALE2[] = FRENCH ENCODING;
+static const char LOCALE3[] = GERMAN ENCODING;
+
+static char *expected1;
+
+static void *
+thread1_func (void *arg)
+{
+  for (;;)
+    {
+      const char *value = nl_langinfo (CODESET);
+      if (strcmp (expected1, value) != 0)
+        {
+          fprintf (stderr, "thread1 disturbed by threadN!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+}
+
+static char *expected2;
+
+static void *
+thread2_func (void *arg)
+{
+  for (;;)
+    {
+      const char *value = nl_langinfo (PM_STR);
+      if (strcmp (expected2, value) != 0)
+        {
+          fprintf (stderr, "thread2 disturbed by threadN!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+}
+
+static char *expected3;
+
+static void *
+thread3_func (void *arg)
+{
+  for (;;)
+    {
+      const char *value = nl_langinfo (DAY_2);
+      if (strcmp (expected3, value) != 0)
+        {
+          fprintf (stderr, "thread3 disturbed by threadN!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+}
+
+static char *expected4;
+
+static void *
+thread4_func (void *arg)
+{
+  for (;;)
+    {
+      const char *value = nl_langinfo (ALTMON_2);
+      if (strcmp (expected4, value) != 0)
+        {
+          fprintf (stderr, "thread4 disturbed by threadN!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+}
+
+static char *expected5;
+
+static void *
+thread5_func (void *arg)
+{
+  for (;;)
+    {
+      const char *value = nl_langinfo (CRNCYSTR);
+      if (strcmp (expected5, value) != 0)
+        {
+          fprintf (stderr, "thread5 disturbed by threadN!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+}
+
+static char *expected6;
+
+static void *
+thread6_func (void *arg)
+{
+  for (;;)
+    {
+      const char *value = nl_langinfo (RADIXCHAR);
+      if (strcmp (expected6, value) != 0)
+        {
+          fprintf (stderr, "thread6 disturbed by threadN!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+}
+
+static void *
+threadN_func (void *arg)
+{
+  for (;;)
+    {
+      nl_langinfo (CODESET);   /* LC_CTYPE */    /* locale charmap */
+      nl_langinfo (AM_STR);    /* LC_TIME */     /* locale -k am_pm */
+      nl_langinfo (PM_STR);    /* LC_TIME */     /* locale -k am_pm */
+      nl_langinfo (DAY_2);     /* LC_TIME */     /* locale -k day */
+      nl_langinfo (DAY_5);     /* LC_TIME */     /* locale -k day */
+      nl_langinfo (ALTMON_2);  /* LC_TIME */     /* locale -k alt_mon */
+      nl_langinfo (ALTMON_9);  /* LC_TIME */     /* locale -k alt_mon */
+      nl_langinfo (CRNCYSTR);  /* LC_MONETARY */ /* locale -k currency_symbol */
+      nl_langinfo (RADIXCHAR); /* LC_NUMERIC */  /* locale -k decimal_point */
+      nl_langinfo (THOUSEP);   /* LC_NUMERIC */  /* locale -k thousands_sep */
+    }
+
+  /*NOTREACHED*/
+}
+
+int
+main (int argc, char *argv[])
+{
+  if (setlocale (LC_ALL, LOCALE1) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE1 not recognized\n");
+      return 77;
+    }
+  if (setlocale (LC_MONETARY, LOCALE2) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE2 not recognized\n");
+      return 77;
+    }
+  if (setlocale (LC_NUMERIC, LOCALE3) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE3 not recognized\n");
+      return 77;
+    }
+
+  expected1 = strdup (nl_langinfo (CODESET));
+  expected2 = strdup (nl_langinfo (PM_STR));
+  expected3 = strdup (nl_langinfo (DAY_2));
+  expected4 = strdup (nl_langinfo (ALTMON_2));
+  expected5 = strdup (nl_langinfo (CRNCYSTR));
+  expected6 = strdup (nl_langinfo (RADIXCHAR));
+
+  /* Create the checker threads.  */
+  gl_thread_create (thread1_func, NULL);
+  gl_thread_create (thread2_func, NULL);
+  gl_thread_create (thread3_func, NULL);
+  gl_thread_create (thread4_func, NULL);
+  gl_thread_create (thread5_func, NULL);
+  gl_thread_create (thread6_func, NULL);
+  /* Create the disturber thread.  */
+  gl_thread_create (threadN_func, NULL);
+
+  /* Let them run for 2 seconds.  */
+  {
+    struct timespec duration;
+    duration.tv_sec = (argc > 1 ? atoi (argv[1]) : 2);
+    duration.tv_nsec = 0;
+
+    nanosleep (&duration, NULL);
+  }
+
+  return 0;
+}
+
+#else
+
+/* No multithreading available.  */
+
+#include <stdio.h>
+
+int
+main ()
+{
+  fputs ("Skipping test: multithreading not enabled\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/test-nl_langinfo.c b/src/grep/gnulib-tests/test-nl_langinfo.c
new file mode 100644
index 0000000..def628b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-nl_langinfo.c
@@ -0,0 +1,152 @@
+/* Test of nl_langinfo replacement.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
+
+#include <config.h>
+
+#include <langinfo.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (nl_langinfo, char *, (nl_item));
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "c-strcase.h"
+#include "macros.h"
+
+/* For GCC >= 4.3, silence the warnings
+     "comparison of unsigned expression >= 0 is always true"
+   in this file.  */
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
+# pragma GCC diagnostic ignored "-Wtype-limits"
+#endif
+
+int
+main (int argc, char *argv[])
+{
+  int pass = atoi (argv[1]);
+  /* pass    locale
+      0        C
+      1        traditional French locale
+      2        French UTF-8 locale
+   */
+
+  setlocale (LC_ALL, "");
+
+  /* nl_langinfo items of the LC_CTYPE category */
+  ASSERT (strlen (nl_langinfo (CODESET)) > 0);
+  if (pass == 2)
+    {
+      const char *codeset = nl_langinfo (CODESET);
+      ASSERT (c_strcasecmp (codeset, "UTF-8") == 0 || c_strcasecmp (codeset, "UTF8") == 0);
+    }
+  /* nl_langinfo items of the LC_NUMERIC category */
+  ASSERT (strlen (nl_langinfo (RADIXCHAR)) > 0);
+  ASSERT (strlen (nl_langinfo (THOUSEP)) >= 0);
+  /* nl_langinfo items of the LC_TIME category */
+  ASSERT (strlen (nl_langinfo (D_T_FMT)) > 0);
+  ASSERT (strlen (nl_langinfo (D_FMT)) > 0);
+  ASSERT (strlen (nl_langinfo (T_FMT)) > 0);
+  ASSERT (strlen (nl_langinfo (T_FMT_AMPM)) >= (pass == 0 ? 1 : 0));
+  ASSERT (strlen (nl_langinfo (AM_STR)) >= (pass == 0 ? 1 : 0));
+  ASSERT (strlen (nl_langinfo (PM_STR)) >= (pass == 0 ? 1 : 0));
+  ASSERT (strlen (nl_langinfo (DAY_1)) > 0);
+  ASSERT (strlen (nl_langinfo (DAY_2)) > 0);
+  ASSERT (strlen (nl_langinfo (DAY_3)) > 0);
+  ASSERT (strlen (nl_langinfo (DAY_4)) > 0);
+  ASSERT (strlen (nl_langinfo (DAY_5)) > 0);
+  ASSERT (strlen (nl_langinfo (DAY_6)) > 0);
+  ASSERT (strlen (nl_langinfo (DAY_7)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_1)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_2)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_3)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_4)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_5)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_6)) > 0);
+  ASSERT (strlen (nl_langinfo (ABDAY_7)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_1)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_2)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_3)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_4)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_5)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_6)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_7)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_8)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_9)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_10)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_11)) > 0);
+  ASSERT (strlen (nl_langinfo (MON_12)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_1)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_2)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_3)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_4)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_5)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_6)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_7)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_8)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_9)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_10)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_11)) > 0);
+  ASSERT (strlen (nl_langinfo (ALTMON_12)) > 0);
+  /* In the tested locales, alternate month names and month names ought to be
+     the same.  */
+  ASSERT (strcmp (nl_langinfo (ALTMON_1), nl_langinfo (MON_1)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_2), nl_langinfo (MON_2)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_3), nl_langinfo (MON_3)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_4), nl_langinfo (MON_4)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_5), nl_langinfo (MON_5)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_6), nl_langinfo (MON_6)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_7), nl_langinfo (MON_7)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_8), nl_langinfo (MON_8)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_9), nl_langinfo (MON_9)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_10), nl_langinfo (MON_10)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_11), nl_langinfo (MON_11)) == 0);
+  ASSERT (strcmp (nl_langinfo (ALTMON_12), nl_langinfo (MON_12)) == 0);
+  ASSERT (strlen (nl_langinfo (ABMON_1)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_2)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_3)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_4)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_5)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_6)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_7)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_8)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_9)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_10)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_11)) > 0);
+  ASSERT (strlen (nl_langinfo (ABMON_12)) > 0);
+  ASSERT (strlen (nl_langinfo (ERA)) >= 0);
+  ASSERT (strlen (nl_langinfo (ERA_D_FMT)) >= 0);
+  ASSERT (strlen (nl_langinfo (ERA_D_T_FMT)) >= 0);
+  ASSERT (strlen (nl_langinfo (ERA_T_FMT)) >= 0);
+  ASSERT (nl_langinfo (ALT_DIGITS) != NULL);
+  /* nl_langinfo items of the LC_MONETARY category */
+  {
+    const char *currency = nl_langinfo (CRNCYSTR);
+    ASSERT (strlen (currency) >= 0);
+#if !defined __NetBSD__
+    if (pass > 0)
+      ASSERT (strlen (currency) >= 1);
+#endif
+  }
+  /* nl_langinfo items of the LC_MESSAGES category */
+  ASSERT (strlen (nl_langinfo (YESEXPR)) > 0);
+  ASSERT (strlen (nl_langinfo (NOEXPR)) > 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-nl_langinfo.sh b/src/grep/gnulib-tests/test-nl_langinfo.sh
new file mode 100755
index 0000000..b1ce46c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-nl_langinfo.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+LC_ALL=C ${CHECKER} ./test-nl_langinfo${EXEEXT} 0 || exit 1
+
+# Test whether a specific traditional locale is installed.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR ${CHECKER} ./test-nl_langinfo${EXEEXT} 1 || exit 1
+fi
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 ${CHECKER} ./test-nl_langinfo${EXEEXT} 2 || exit 1
+fi
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-open.c b/src/grep/gnulib-tests/test-open.c
new file mode 100644
index 0000000..1524af4
--- /dev/null
+++ b/src/grep/gnulib-tests/test-open.c
@@ -0,0 +1,41 @@
+/* Test of opening a file descriptor.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <fcntl.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (open, int, (char const *, int, ...));
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define BASE "test-open.t"
+
+#include "test-open.h"
+
+int
+main (void)
+{
+  return test_open (open, true);
+}
diff --git a/src/grep/gnulib-tests/test-open.h b/src/grep/gnulib-tests/test-open.h
new file mode 100644
index 0000000..9ceb798
--- /dev/null
+++ b/src/grep/gnulib-tests/test-open.h
@@ -0,0 +1,133 @@
+/* Test of opening a file descriptor.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+/* Make test_open always inline if we're using Fortify, which defines
+   __always_inline to do that.  Do nothing otherwise.  This works
+   around a glibc bug whereby 'open' cannot be used as a function
+   pointer when _FORTIFY_SOURCE is positive.  */
+
+#if __GLIBC__ && defined __always_inline
+# define ALWAYS_INLINE __always_inline
+#else
+# define ALWAYS_INLINE
+#endif
+
+/* This file is designed to test both open(n,buf[,mode]) and
+   openat(AT_FDCWD,n,buf[,mode]).  FUNC is the function to test.
+   Assumes that BASE and ASSERT are already defined, and that
+   appropriate headers are already included.  If PRINT, warn before
+   skipping symlink tests with status 77.  */
+
+static ALWAYS_INLINE int
+test_open (int (*func) (char const *, int, ...), bool print)
+{
+  int fd;
+
+  /* Remove anything from prior partial run.  */
+  unlink (BASE "file");
+  unlink (BASE "e.exe");
+  unlink (BASE "link");
+
+  /* Cannot create directory.  */
+  errno = 0;
+  ASSERT (func ("nonexist.ent/", O_CREAT | O_RDONLY, 0600) == -1);
+  ASSERT (errno == ENOTDIR || errno == EISDIR || errno == ENOENT
+          || errno == EINVAL);
+
+  /* Create a regular file.  */
+  fd = func (BASE "file", O_CREAT | O_RDONLY, 0600);
+  ASSERT (0 <= fd);
+  ASSERT (close (fd) == 0);
+
+  /* Create an executable regular file.  */
+  fd = func (BASE "e.exe", O_CREAT | O_RDONLY, 0700);
+  ASSERT (0 <= fd);
+  ASSERT (close (fd) == 0);
+
+  /* Trailing slash handling.  */
+  errno = 0;
+  ASSERT (func (BASE "file/", O_RDONLY) == -1);
+  ASSERT (errno == ENOTDIR || errno == EISDIR || errno == EINVAL);
+
+  /* Directories cannot be opened for writing.  */
+  errno = 0;
+  ASSERT (func (".", O_WRONLY) == -1);
+  ASSERT (errno == EISDIR || errno == EACCES);
+
+  /* /dev/null must exist, and be writable.  */
+  fd = func ("/dev/null", O_RDONLY);
+  ASSERT (0 <= fd);
+  {
+    char c;
+    ASSERT (read (fd, &c, 1) == 0);
+  }
+  ASSERT (close (fd) == 0);
+  fd = func ("/dev/null", O_WRONLY);
+  ASSERT (0 <= fd);
+  ASSERT (write (fd, "c", 1) == 1);
+  ASSERT (close (fd) == 0);
+
+  /* Although O_NONBLOCK on regular files can be ignored, it must not
+     cause a failure.  */
+  fd = func (BASE "file", O_NONBLOCK | O_RDONLY);
+  ASSERT (0 <= fd);
+  ASSERT (close (fd) == 0);
+
+  /* O_CLOEXEC must be honoured.  */
+  if (O_CLOEXEC)
+    {
+      /* Since the O_CLOEXEC handling goes through a special code path at its
+         first invocation, test it twice.  */
+      int i;
+
+      for (i = 0; i < 2; i++)
+        {
+          int flags;
+
+          fd = func (BASE "file", O_CLOEXEC | O_RDONLY);
+          ASSERT (0 <= fd);
+          flags = fcntl (fd, F_GETFD);
+          ASSERT (flags >= 0);
+          ASSERT ((flags & FD_CLOEXEC) != 0);
+          ASSERT (close (fd) == 0);
+        }
+    }
+
+  /* Symlink handling, where supported.  */
+  if (symlink (BASE "file", BASE "link") != 0)
+    {
+      ASSERT (unlink (BASE "file") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  errno = 0;
+  ASSERT (func (BASE "link/", O_RDONLY) == -1);
+  ASSERT (errno == ENOTDIR);
+  fd = func (BASE "link", O_RDONLY);
+  ASSERT (0 <= fd);
+  ASSERT (close (fd) == 0);
+
+  /* Cleanup.  */
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (unlink (BASE "e.exe") == 0);
+  ASSERT (unlink (BASE "link") == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-openat-safer.c b/src/grep/gnulib-tests/test-openat-safer.c
new file mode 100644
index 0000000..92f641c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-openat-safer.c
@@ -0,0 +1,125 @@
+/* Test that openat_safer leave standard fds alone.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include "fcntl--.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+/* This test intentionally closes stderr.  So, we arrange to have fd 10
+   (outside the range of interesting fd's during the test) set up to
+   duplicate the original stderr.  */
+
+#define BACKUP_STDERR_FILENO 10
+#define ASSERT_STREAM myerr
+#include "macros.h"
+
+static FILE *myerr;
+
+#define witness "test-openat-safer.txt"
+
+int
+main (void)
+{
+  int i;
+  int j;
+  int dfd;
+  int fd;
+  char buf[2];
+
+  /* We close fd 2 later, so save it in fd 10.  */
+  if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO
+      || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)
+    return 2;
+
+  /* Create handle for future use.  */
+  dfd = openat (AT_FDCWD, ".", O_RDONLY);
+  ASSERT (STDERR_FILENO < dfd);
+
+  /* Create file for later checks.  */
+  remove (witness);
+  fd = openat (dfd, witness, O_WRONLY | O_CREAT | O_EXCL, 0600);
+  ASSERT (STDERR_FILENO < fd);
+  ASSERT (write (fd, "hi", 2) == 2);
+  ASSERT (close (fd) == 0);
+
+  /* Four iterations, with progressively more standard descriptors
+     closed.  */
+  for (i = -1; i <= STDERR_FILENO; i++)
+    {
+      ASSERT (fchdir (dfd) == 0);
+      if (0 <= i)
+        ASSERT (close (i) == 0);
+
+      /* Execute once in ".", once in "..".  */
+      for (j = 0; j <= 1; j++)
+        {
+          if (j)
+            ASSERT (chdir ("..") == 0);
+
+          /* Check for error detection.  */
+          errno = 0;
+          ASSERT (openat (AT_FDCWD, "", O_RDONLY) == -1);
+          ASSERT (errno == ENOENT);
+          errno = 0;
+          ASSERT (openat (dfd, "", O_RDONLY) == -1);
+          ASSERT (errno == ENOENT);
+          errno = 0;
+          ASSERT (openat (-1, ".", O_RDONLY) == -1);
+          ASSERT (errno == EBADF);
+
+          /* Check for trailing slash and /dev/null handling.  */
+          errno = 0;
+          ASSERT (openat (dfd, "nonexist.ent/", O_CREAT | O_RDONLY,
+                          S_IRUSR | S_IWUSR) == -1);
+          ASSERT (errno == ENOTDIR || errno == EISDIR || errno == ENOENT
+                  || errno == EINVAL);
+          errno = 0;
+          ASSERT (openat (dfd, witness "/", O_RDONLY) == -1);
+          ASSERT (errno == ENOTDIR || errno == EISDIR || errno == EINVAL);
+#if defined __linux__ || defined __ANDROID__
+          /* Using a bad directory is okay for absolute paths.  */
+          fd = openat (-1, "/dev/null", O_WRONLY);
+          ASSERT (STDERR_FILENO < fd);
+#endif
+          /* Using a non-directory is wrong for relative paths.  */
+          errno = 0;
+          fd = open ("/dev/null", O_RDONLY);
+          ASSERT (STDERR_FILENO < fd);
+          ASSERT (openat (fd, ".", O_RDONLY) == -1);
+          ASSERT (errno == EBADF || errno == ENOTDIR);
+          ASSERT (close (fd) == 0);
+
+          /* Check for our witness file.  */
+          fd = openat (dfd, witness, O_RDONLY | O_NOFOLLOW);
+          ASSERT (STDERR_FILENO < fd);
+          ASSERT (read (fd, buf, 2) == 2);
+          ASSERT (buf[0] == 'h' && buf[1] == 'i');
+          ASSERT (close (fd) == 0);
+        }
+    }
+  ASSERT (fchdir (dfd) == 0);
+  ASSERT (unlink (witness) == 0);
+  ASSERT (close (dfd) == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-openat.c b/src/grep/gnulib-tests/test-openat.c
new file mode 100644
index 0000000..d876a77
--- /dev/null
+++ b/src/grep/gnulib-tests/test-openat.c
@@ -0,0 +1,99 @@
+/* Test that openat works.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <fcntl.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (openat, int, (int, char const *, int, ...));
+
+#include <errno.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#define BASE "test-openat.t"
+
+#include "test-open.h"
+
+static int dfd = AT_FDCWD;
+
+/* Wrapper around openat to test open behavior.  */
+static int
+do_open (char const *name, int flags, ...)
+{
+  if (flags & O_CREAT)
+    {
+      mode_t mode = 0;
+      va_list arg;
+      va_start (arg, flags);
+
+      /* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4
+         creates crashing code when 'mode_t' is smaller than 'int'.  */
+      mode = va_arg (arg, PROMOTED_MODE_T);
+
+      va_end (arg);
+      return openat (dfd, name, flags, mode);
+    }
+  return openat (dfd, name, flags);
+}
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  int result;
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    errno = 0;
+    ASSERT (openat (-1, "foo", O_RDONLY) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    close (99);
+    errno = 0;
+    ASSERT (openat (99, "foo", O_RDONLY) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Basic checks.  */
+  result = test_open (do_open, false);
+  dfd = open (".", O_RDONLY);
+  ASSERT (0 <= dfd);
+  ASSERT (test_open (do_open, false) == result);
+  ASSERT (close (dfd) == 0);
+
+  /* Check that even when *-safer modules are in use, plain openat can
+     land in fd 0.  Do this test last, since it is destructive to
+     stdin.  */
+  ASSERT (close (STDIN_FILENO) == 0);
+  ASSERT (openat (AT_FDCWD, ".", O_RDONLY) == STDIN_FILENO);
+  {
+    dfd = open (".", O_RDONLY);
+    ASSERT (STDIN_FILENO < dfd);
+    ASSERT (chdir ("..") == 0);
+    ASSERT (close (STDIN_FILENO) == 0);
+    ASSERT (openat (dfd, ".", O_RDONLY) == STDIN_FILENO);
+    ASSERT (close (dfd) == 0);
+  }
+  return result;
+}
diff --git a/src/grep/gnulib-tests/test-pathmax.c b/src/grep/gnulib-tests/test-pathmax.c
new file mode 100644
index 0000000..2ba1cc2
--- /dev/null
+++ b/src/grep/gnulib-tests/test-pathmax.c
@@ -0,0 +1,32 @@
+/* Test of "pathmax.h".
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include "pathmax.h"
+
+/* Check that PATH_MAX is a constant if it is defined.  */
+#ifdef PATH_MAX
+int a = PATH_MAX;
+#endif
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-perror.c b/src/grep/gnulib-tests/test-perror.c
new file mode 100644
index 0000000..1012396
--- /dev/null
+++ b/src/grep/gnulib-tests/test-perror.c
@@ -0,0 +1,36 @@
+/* Test of perror() function.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (perror, void, (char const *));
+
+#include <errno.h>
+
+int
+main (int argc, char **argv)
+{
+  const char *prefix = (argc > 1 ? argv[1] : NULL);
+
+  errno = EACCES;    perror (prefix);
+  errno = ETIMEDOUT; perror (prefix);
+  errno = EOVERFLOW; perror (prefix);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-perror.sh b/src/grep/gnulib-tests/test-perror.sh
new file mode 100755
index 0000000..e776609
--- /dev/null
+++ b/src/grep/gnulib-tests/test-perror.sh
@@ -0,0 +1,26 @@
+#!/bin/sh
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+# Test NULL prefix. Result should not contain a number, except in lines that
+# start with 'EDC' (IBM z/OS libc produces an error identifier before the
+# error message).
+${CHECKER} test-perror 2>&1 >/dev/null | LC_ALL=C tr -d '\r' > t-perror.tmp
+grep -v '^EDC' t-perror.tmp | grep '[0-9]' > /dev/null \
+  && fail_ "result should not contain a number"
+
+# Test empty prefix. Result should be the same.
+${CHECKER} test-perror '' 2>&1 >/dev/null | LC_ALL=C tr -d '\r' > t-perror1.tmp
+diff t-perror.tmp t-perror1.tmp \
+  || fail_ "empty prefix should behave like NULL argument"
+
+# Test non-empty prefix.
+${CHECKER} test-perror foo 2>&1 >/dev/null | LC_ALL=C tr -d '\r' > t-perror3.tmp
+sed -e 's/^/foo: /' < t-perror.tmp > t-perror2.tmp
+diff t-perror2.tmp t-perror3.tmp || fail_ "prefix applied incorrectly"
+
+# Test exit status.
+${CHECKER} test-perror >out 2>/dev/null || fail_ "unexpected exit status"
+test -s out && fail_ "unexpected output"
+
+Exit 0
diff --git a/src/grep/gnulib-tests/test-perror2.c b/src/grep/gnulib-tests/test-perror2.c
new file mode 100644
index 0000000..adce4a6
--- /dev/null
+++ b/src/grep/gnulib-tests/test-perror2.c
@@ -0,0 +1,133 @@
+/* Test of perror() function.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+/* This test intentionally parses stderr.  So, we arrange to have fd 10
+   (outside the range of interesting fd's during the test) set up to
+   duplicate the original stderr.  */
+#define BACKUP_STDERR_FILENO 10
+#define ASSERT_STREAM myerr
+#include "macros.h"
+
+static FILE *myerr;
+
+#define BASE "test-perror2"
+
+int
+main (void)
+{
+  /* We change fd 2 later, so save it in fd 10.  */
+  if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO
+      || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)
+    return 2;
+
+  ASSERT (freopen (BASE ".tmp", "w+", stderr) == stderr);
+
+  /* Test that perror does not clobber strerror buffer.  */
+  {
+    const char *msg1;
+    const char *msg2;
+    const char *msg3;
+    const char *msg4;
+    char *str1;
+    char *str2;
+    char *str3;
+    char *str4;
+
+    msg1 = strerror (ENOENT);
+    ASSERT (msg1);
+    str1 = strdup (msg1);
+    ASSERT (str1);
+
+    msg2 = strerror (ERANGE);
+    ASSERT (msg2);
+    str2 = strdup (msg2);
+    ASSERT (str2);
+
+    msg3 = strerror (-4);
+    ASSERT (msg3);
+    str3 = strdup (msg3);
+    ASSERT (str3);
+
+    msg4 = strerror (1729576);
+    ASSERT (msg4);
+    str4 = strdup (msg4);
+    ASSERT (str4);
+
+    errno = EACCES;
+    perror ("");
+    errno = -5;
+    perror ("");
+    ASSERT (!ferror (stderr));
+    ASSERT (STREQ (msg4, str4));
+
+    free (str1);
+    free (str2);
+    free (str3);
+    free (str4);
+  }
+
+  /* Test that perror uses the same message as strerror.  */
+  {
+    int errs[] = { EACCES, 0, -3, };
+    int i;
+    for (i = 0; i < SIZEOF (errs); i++)
+      {
+        char buf[256];
+        const char *err = strerror (errs[i]);
+
+        ASSERT (err);
+        ASSERT (strlen (err) < sizeof buf);
+        rewind (stderr);
+        ASSERT (ftruncate (fileno (stderr), 0) == 0);
+        errno = errs[i];
+        perror (NULL);
+        ASSERT (!ferror (stderr));
+        rewind (stderr);
+        ASSERT (fgets (buf, sizeof buf, stderr) == buf);
+        ASSERT (strstr (buf, err));
+      }
+  }
+
+  /* Test that perror reports write failure.  */
+  {
+    ASSERT (freopen (BASE ".tmp", "r", stderr) == stderr);
+    ASSERT (setvbuf (stderr, NULL, _IONBF, BUFSIZ) == 0);
+    errno = -1;
+    ASSERT (!ferror (stderr));
+    perror (NULL);
+#if 0
+    /* Commented out until cygwin behaves:
+       https://sourceware.org/ml/newlib/2011/msg00228.html */
+    ASSERT (errno > 0);
+    /* Commented out until glibc behaves:
+       https://sourceware.org/bugzilla/show_bug.cgi?id=12792 */
+    ASSERT (ferror (stderr));
+#endif
+  }
+
+  ASSERT (fclose (stderr) == 0);
+  ASSERT (remove (BASE ".tmp") == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-pipe.c b/src/grep/gnulib-tests/test-pipe.c
new file mode 100644
index 0000000..5ae2a0a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-pipe.c
@@ -0,0 +1,108 @@
+/* Test of pipe.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (pipe, int, (int[2]));
+
+#include <fcntl.h>
+#include <stdbool.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#endif
+
+#include "binary-io.h"
+#include "macros.h"
+
+/* Return true if FD is open.  */
+static bool
+is_open (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
+#else
+# ifndef F_GETFL
+#  error Please port fcntl to your platform
+# endif
+  return 0 <= fcntl (fd, F_GETFL);
+#endif
+}
+
+/* Return true if FD is not inherited to child processes.  */
+static bool
+is_cloexec (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD flags;
+  ASSERT (GetHandleInformation (h, &flags));
+  return (flags & HANDLE_FLAG_INHERIT) == 0;
+#else
+  int flags;
+  ASSERT ((flags = fcntl (fd, F_GETFD)) >= 0);
+  return (flags & FD_CLOEXEC) != 0;
+#endif
+}
+
+/* Return true if FD is in non-blocking mode.  */
+static bool
+is_nonblocking (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* We don't use the non-blocking mode for sockets here.  */
+  return 0;
+#else
+  int flags;
+  ASSERT ((flags = fcntl (fd, F_GETFL)) >= 0);
+  return (flags & O_NONBLOCK) != 0;
+#endif
+}
+
+int
+main ()
+{
+  int fd[2];
+
+  fd[0] = -1;
+  fd[1] = -1;
+  ASSERT (pipe (fd) >= 0);
+  ASSERT (fd[0] >= 0);
+  ASSERT (fd[1] >= 0);
+  ASSERT (fd[0] != fd[1]);
+  ASSERT (is_open (fd[0]));
+  ASSERT (is_open (fd[1]));
+  ASSERT (!is_cloexec (fd[0]));
+  ASSERT (!is_cloexec (fd[1]));
+  ASSERT (!is_nonblocking (fd[0]));
+  ASSERT (!is_nonblocking (fd[1]));
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-pthread-thread.c b/src/grep/gnulib-tests/test-pthread-thread.c
new file mode 100644
index 0000000..094e8d1
--- /dev/null
+++ b/src/grep/gnulib-tests/test-pthread-thread.c
@@ -0,0 +1,73 @@
+/* Test of pthread_create () function.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include <pthread.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include "macros.h"
+
+static pthread_t main_thread_before;
+static pthread_t main_thread_after;
+static pthread_t worker_thread;
+
+#define MAGIC ((void *) 1266074729)
+static volatile int work_done;
+
+static void *
+worker_thread_func (void *arg)
+{
+  work_done = 1;
+  return MAGIC;
+}
+
+int
+main ()
+{
+  main_thread_before = pthread_self ();
+
+  if (pthread_create (&worker_thread, NULL, worker_thread_func, NULL) == 0)
+    {
+      void *ret;
+
+      /* Check that pthread_self () has the same value before than after the
+         first call to pthread_create ().  */
+      main_thread_after = pthread_self ();
+      ASSERT (memcmp (&main_thread_before, &main_thread_after,
+                      sizeof (pthread_t))
+              == 0);
+
+      ASSERT (pthread_join (worker_thread, &ret) == 0);
+
+      /* Check the return value of the thread.  */
+      ASSERT (ret == MAGIC);
+
+      /* Check that worker_thread_func () has finished executing.  */
+      ASSERT (work_done);
+
+      return 0;
+    }
+  else
+    {
+      fputs ("pthread_create failed\n", stderr);
+      return 1;
+    }
+}
diff --git a/src/grep/gnulib-tests/test-pthread.c b/src/grep/gnulib-tests/test-pthread.c
new file mode 100644
index 0000000..89c68dc
--- /dev/null
+++ b/src/grep/gnulib-tests/test-pthread.c
@@ -0,0 +1,90 @@
+/* Test of <pthread.h> substitute.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+#include <pthread.h>
+
+#include "verify.h"
+
+/* Check that the types are all defined.  */
+
+pthread_t t1;
+pthread_attr_t t2;
+
+pthread_once_t t3 = PTHREAD_ONCE_INIT;
+
+pthread_mutex_t t4 = PTHREAD_MUTEX_INITIALIZER;
+pthread_mutexattr_t t5;
+
+pthread_rwlock_t t6 = PTHREAD_RWLOCK_INITIALIZER;
+pthread_rwlockattr_t t7;
+
+pthread_cond_t t8 = PTHREAD_COND_INITIALIZER;
+pthread_condattr_t t9;
+
+pthread_key_t t10;
+
+pthread_spinlock_t t11;
+
+#ifdef TODO /* Not implemented in gnulib yet */
+pthread_barrier_t t12;
+pthread_barrierattr_t t13;
+#endif
+
+/* Check that the various macros are defined.  */
+
+/* Constants for pthread_attr_setdetachstate().  */
+int ds[] = { PTHREAD_CREATE_JOINABLE, PTHREAD_CREATE_DETACHED };
+
+/* Constants for pthread_exit().  */
+void *canceled = PTHREAD_CANCELED;
+
+/* Constants for pthread_mutexattr_settype().  */
+int mt[] = {
+  PTHREAD_MUTEX_DEFAULT,
+  PTHREAD_MUTEX_NORMAL,
+  PTHREAD_MUTEX_RECURSIVE,
+  PTHREAD_MUTEX_ERRORCHECK
+};
+
+#ifdef TODO /* Not implemented in gnulib yet */
+
+/* Constants for pthread_mutexattr_setrobust().  */
+int mr[] = { PTHREAD_MUTEX_ROBUST, PTHREAD_MUTEX_STALLED };
+
+/* Constants for pthread_barrierattr_setpshared().  */
+int bp[] = { PTHREAD_PROCESS_SHARED, PTHREAD_PROCESS_PRIVATE };
+
+/* Constants for pthread_barrier_wait().  */
+int bw[] = { PTHREAD_BARRIER_SERIAL_THREAD };
+
+/* Constants for pthread_setcancelstate().  */
+int cs[] = { PTHREAD_CANCEL_ENABLE, PTHREAD_CANCEL_DISABLE };
+
+/* Constants for pthread_setcanceltype().  */
+int ct[] = { PTHREAD_CANCEL_DEFERRED, PTHREAD_CANCEL_ASYNCHRONOUS };
+
+#endif
+
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-pthread_sigmask1.c b/src/grep/gnulib-tests/test-pthread_sigmask1.c
new file mode 100644
index 0000000..f12b17c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-pthread_sigmask1.c
@@ -0,0 +1,95 @@
+/* Test of pthread_sigmask in a single-threaded program.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include <signal.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (pthread_sigmask, int, (int, const sigset_t *, sigset_t *));
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#if !(defined _WIN32 && !defined __CYGWIN__)
+
+static volatile int sigint_occurred;
+
+static void
+sigint_handler (int sig)
+{
+  sigint_occurred++;
+}
+
+int
+main (int argc, char *argv[])
+{
+  sigset_t set;
+  int pid = getpid ();
+  char command[80];
+
+  signal (SIGINT, sigint_handler);
+
+  sigemptyset (&set);
+  sigaddset (&set, SIGINT);
+
+  /* Check error handling.  */
+  ASSERT (pthread_sigmask (1729, &set, NULL) == EINVAL);
+
+  /* Block SIGINT.  */
+  ASSERT (pthread_sigmask (SIG_BLOCK, &set, NULL) == 0);
+
+  /* Request a SIGINT signal from outside.  */
+  sprintf (command, "sh -c 'sleep 1; kill -%d %d' &", SIGINT, pid);
+  ASSERT (system (command) == 0);
+
+  /* Wait.  */
+  sleep (2);
+
+  /* The signal should not have arrived yet, because it is blocked.  */
+  ASSERT (sigint_occurred == 0);
+
+  /* Unblock SIGINT.  */
+  ASSERT (pthread_sigmask (SIG_UNBLOCK, &set, NULL) == 0);
+
+  /* The signal should have arrived now, because POSIX says
+       "If there are any pending unblocked signals after the call to
+        pthread_sigmask(), at least one of those signals shall be delivered
+        before the call to pthread_sigmask() returns."  */
+  ASSERT (sigint_occurred == 1);
+
+  return 0;
+}
+
+#else
+
+/* On native Windows, getpid() values and the arguments that are passed to
+   the (Cygwin?) 'kill' program are not necessarily related.  */
+
+int
+main ()
+{
+  fputs ("Skipping test: native Windows platform\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/test-pthread_sigmask2.c b/src/grep/gnulib-tests/test-pthread_sigmask2.c
new file mode 100644
index 0000000..f57fc93
--- /dev/null
+++ b/src/grep/gnulib-tests/test-pthread_sigmask2.c
@@ -0,0 +1,105 @@
+/* Test of pthread_sigmask in a multi-threaded program.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include <signal.h>
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#if USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS
+
+static pthread_t main_thread;
+static pthread_t killer_thread;
+
+static void *
+killer_thread_func (void *arg)
+{
+  sleep (1);
+  pthread_kill (main_thread, SIGINT);
+  return NULL;
+}
+
+static volatile int sigint_occurred;
+
+static void
+sigint_handler (int sig)
+{
+  sigint_occurred++;
+}
+
+int
+main (int argc, char *argv[])
+{
+  sigset_t set;
+
+  signal (SIGINT, sigint_handler);
+
+  sigemptyset (&set);
+  sigaddset (&set, SIGINT);
+
+  /* Check error handling.  */
+  /* This call returns 0 on NetBSD 8.0.  */
+#if !defined __NetBSD__
+  ASSERT (pthread_sigmask (1729, &set, NULL) == EINVAL);
+#endif
+
+  /* Block SIGINT.  */
+  ASSERT (pthread_sigmask (SIG_BLOCK, &set, NULL) == 0);
+
+  /* Request a SIGINT signal from another thread.  */
+  main_thread = pthread_self ();
+  ASSERT (pthread_create (&killer_thread, NULL, killer_thread_func, NULL) == 0);
+
+  /* Wait.  */
+  sleep (2);
+
+  /* The signal should not have arrived yet, because it is blocked.  */
+  ASSERT (sigint_occurred == 0);
+
+  /* Unblock SIGINT.  */
+  ASSERT (pthread_sigmask (SIG_UNBLOCK, &set, NULL) == 0);
+
+  /* The signal should have arrived now, because POSIX says
+       "If there are any pending unblocked signals after the call to
+        pthread_sigmask(), at least one of those signals shall be delivered
+        before the call to pthread_sigmask() returns."  */
+  ASSERT (sigint_occurred == 1);
+
+  /* Clean up the thread.  This avoid a "ThreadSanitizer: thread leak" warning
+     from "gcc -fsanitize=thread".  */
+  ASSERT (pthread_join (killer_thread, NULL) == 0);
+
+  return 0;
+}
+
+#else
+
+int
+main ()
+{
+  fputs ("Skipping test: POSIX threads not enabled\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/test-quotearg-simple.c b/src/grep/gnulib-tests/test-quotearg-simple.c
new file mode 100644
index 0000000..795e30f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-quotearg-simple.c
@@ -0,0 +1,366 @@
+/* Test of quotearg family of functions.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2008.  */
+
+#include <config.h>
+
+#include "quotearg.h"
+
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "localcharset.h"
+#include "macros.h"
+#include "zerosize-ptr.h"
+
+#include "test-quotearg.h"
+
+static struct result_groups results_g[] = {
+  /* literal_quoting_style */
+  { { "", "\0""1\0", 3, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b",
+      "a' b", LQ RQ, LQ RQ },
+    { "", "1", 1, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b",
+      "a' b", LQ RQ, LQ RQ },
+    { "", "1", 1, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b",
+      "a' b", LQ RQ, LQ RQ } },
+
+  /* shell_quoting_style */
+  { { "''", "\0""1\0", 3, "simple", "' \t\n'\\''\"\033?""?/\\'", "a:b",
+      "'a\\b'", "\"a' b\"", LQ RQ, LQ RQ },
+    { "''", "1", 1, "simple", "' \t\n'\\''\"\033?""?/\\'", "a:b",
+      "'a\\b'", "\"a' b\"", LQ RQ, LQ RQ },
+    { "''", "1", 1, "simple", "' \t\n'\\''\"\033?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", LQ RQ, LQ RQ } },
+
+  /* shell_always_quoting_style */
+  { { "''", "'\0""1\0'", 5, "'simple'", "' \t\n'\\''\"\033?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "'" LQ RQ "'", "'" LQ RQ "'" },
+    { "''", "'1'", 3, "'simple'", "' \t\n'\\''\"\033?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "'" LQ RQ "'", "'" LQ RQ "'" },
+    { "''", "'1'", 3, "'simple'", "' \t\n'\\''\"\033?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "'" LQ RQ "'", "'" LQ RQ "'" } },
+
+  /* shell_escape_quoting_style */
+  { { "''", "''$'\\0''1'$'\\0'", 15, "simple",
+      "' '$'\\t\\n'\\''\"'$'\\033''?""?/\\'", "a:b",
+      "'a\\b'", "\"a' b\"", "''$'" LQ_ENC RQ_ENC "'", LQ RQ },
+    { "''", "''$'\\0''1'$'\\0'", 15, "simple",
+      "' '$'\\t\\n'\\''\"'$'\\033''?""?/\\'", "a:b",
+      "'a\\b'", "\"a' b\"", "''$'" LQ_ENC RQ_ENC "'", LQ RQ },
+    { "''", "''$'\\0''1'$'\\0'", 15, "simple",
+      "' '$'\\t\\n'\\''\"'$'\\033''?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "''$'" LQ_ENC RQ_ENC "'", LQ RQ } },
+
+  /* shell_escape_always_quoting_style */
+  { { "''", "''$'\\0''1'$'\\0'", 15, "'simple'",
+      "' '$'\\t\\n'\\''\"'$'\\033''?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "''$'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" },
+    { "''", "''$'\\0''1'$'\\0'", 15, "'simple'",
+      "' '$'\\t\\n'\\''\"'$'\\033''?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "''$'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" },
+    { "''", "''$'\\0''1'$'\\0'", 15, "'simple'",
+      "' '$'\\t\\n'\\''\"'$'\\033''?""?/\\'", "'a:b'",
+      "'a\\b'", "\"a' b\"", "''$'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" } },
+
+  /* c_quoting_style */
+  { { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?""?/\\\\\"", "\"a:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" },
+    { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?""?/\\\\\"", "\"a:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" },
+    { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?""?/\\\\\"", "\"a\\:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" } },
+
+  /* c_maybe_quoting_style */
+  { { "", "\"\\0001\\0\"", 9, "simple", "\" \\t\\n'\\\"\\033?""?/\\\\\"",
+      "a:b", "a\\b", "a' b", "\"" LQ_ENC RQ_ENC "\"", LQ RQ },
+    { "", "\"\\0001\\0\"", 9, "simple", "\" \\t\\n'\\\"\\033?""?/\\\\\"",
+      "a:b", "a\\b", "a' b", "\"" LQ_ENC RQ_ENC "\"", LQ RQ },
+    { "", "\"\\0001\\0\"", 9, "simple", "\" \\t\\n'\\\"\\033?""?/\\\\\"",
+      "\"a:b\"", "a\\b", "a' b", "\"" LQ_ENC RQ_ENC "\"", LQ RQ } },
+
+  /* escape_quoting_style */
+  { { "", "\\0001\\0", 7, "simple", " \\t\\n'\"\\033?""?/\\\\", "a:b",
+      "a\\\\b", "a' b", LQ_ENC RQ_ENC, LQ RQ },
+    { "", "\\0001\\0", 7, "simple", " \\t\\n'\"\\033?""?/\\\\", "a:b",
+      "a\\\\b", "a' b", LQ_ENC RQ_ENC, LQ RQ },
+    { "", "\\0001\\0", 7, "simple", " \\t\\n'\"\\033?""?/\\\\", "a\\:b",
+      "a\\\\b", "a' b", LQ_ENC RQ_ENC, LQ RQ } },
+
+  /* locale_quoting_style */
+  { { "''", "'\\0001\\0'", 9, "'simple'", "' \\t\\n\\'\"\\033?""?/\\\\'",
+      "'a:b'", "'a\\\\b'", "'a\\' b'", "'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" },
+    { "''", "'\\0001\\0'", 9, "'simple'", "' \\t\\n\\'\"\\033?""?/\\\\'",
+      "'a:b'", "'a\\\\b'", "'a\\' b'", "'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" },
+    { "''", "'\\0001\\0'", 9, "'simple'", "' \\t\\n\\'\"\\033?""?/\\\\'",
+      "'a\\:b'", "'a\\\\b'", "'a\\' b'",
+      "'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" } },
+
+  /* clocale_quoting_style */
+  { { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?""?/\\\\\"", "\"a:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" },
+    { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?""?/\\\\\"", "\"a:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" },
+    { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?""?/\\\\\"", "\"a\\:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" } }
+};
+
+static struct result_groups flag_results[] = {
+  /* literal_quoting_style and QA_ELIDE_NULL_BYTES */
+  { { "", "1", 1, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b", "a' b",
+      LQ RQ, LQ RQ },
+    { "", "1", 1, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b", "a' b",
+      LQ RQ, LQ RQ },
+    { "", "1", 1, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b", "a' b",
+      LQ RQ, LQ RQ } },
+
+  /* c_quoting_style and QA_ELIDE_OUTER_QUOTES */
+  { { "", "\"\\0001\\0\"", 9, "simple", "\" \\t\\n'\\\"\\033?""?/\\\\\"",
+      "a:b", "a\\b", "a' b", "\"" LQ_ENC RQ_ENC "\"", LQ RQ },
+    { "", "\"\\0001\\0\"", 9, "simple", "\" \\t\\n'\\\"\\033?""?/\\\\\"",
+      "a:b", "a\\b", "a' b", "\"" LQ_ENC RQ_ENC "\"", LQ RQ },
+    { "", "\"\\0001\\0\"", 9, "simple", "\" \\t\\n'\\\"\\033?""?/\\\\\"",
+      "\"a:b\"", "a\\b", "a' b", "\"" LQ_ENC RQ_ENC "\"", LQ RQ } },
+
+  /* c_quoting_style and QA_SPLIT_TRIGRAPHS */
+  { { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?\"\"?/\\\\\"", "\"a:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" },
+    { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?\"\"?/\\\\\"", "\"a:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" },
+    { "\"\"", "\"\\0001\\0\"", 9, "\"simple\"",
+      "\" \\t\\n'\\\"\\033?\"\"?/\\\\\"", "\"a\\:b\"", "\"a\\\\b\"",
+      "\"a' b\"", "\"" LQ_ENC RQ_ENC "\"", "\"" LQ RQ "\"" } }
+};
+
+static char const *custom_quotes[][2] = {
+  { "", ""  },
+  { "'", "'"  },
+  { "(", ")"  },
+  { ":", " "  },
+  { " ", ":"  },
+  { "# ", "\n" },
+  { "\"'", "'\"" }
+};
+
+static struct result_groups custom_results[] = {
+  /* left_quote = right_quote = "" */
+  { { "", "\\0001\\0", 7, "simple",
+      " \\t\\n'\"\\033?""?/\\\\", "a:b", "a\\\\b",
+      "a' b", LQ_ENC RQ_ENC, LQ RQ },
+    { "", "\\0001\\0", 7, "simple",
+      " \\t\\n'\"\\033?""?/\\\\", "a:b", "a\\\\b",
+      "a' b", LQ_ENC RQ_ENC, LQ RQ },
+    { "", "\\0001\\0", 7, "simple",
+      " \\t\\n'\"\\033?""?/\\\\", "a\\:b", "a\\\\b",
+      "a' b", LQ_ENC RQ_ENC, LQ RQ } },
+
+  /* left_quote = right_quote = "'" */
+  { { "''", "'\\0001\\0'", 9, "'simple'",
+      "' \\t\\n\\'\"\\033?""?/\\\\'", "'a:b'", "'a\\\\b'",
+      "'a\\' b'", "'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" },
+    { "''", "'\\0001\\0'", 9, "'simple'",
+      "' \\t\\n\\'\"\\033?""?/\\\\'", "'a:b'", "'a\\\\b'",
+      "'a\\' b'", "'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" },
+    { "''", "'\\0001\\0'", 9, "'simple'",
+      "' \\t\\n\\'\"\\033?""?/\\\\'", "'a\\:b'", "'a\\\\b'",
+      "'a\\' b'", "'" LQ_ENC RQ_ENC "'", "'" LQ RQ "'" } },
+
+  /* left_quote = "(" and right_quote = ")" */
+  { { "()", "(\\0001\\0)", 9, "(simple)",
+      "( \\t\\n'\"\\033?""?/\\\\)", "(a:b)", "(a\\\\b)",
+      "(a' b)", "(" LQ_ENC RQ_ENC ")", "(" LQ RQ ")" },
+    { "()", "(\\0001\\0)", 9, "(simple)",
+      "( \\t\\n'\"\\033?""?/\\\\)", "(a:b)", "(a\\\\b)",
+      "(a' b)", "(" LQ_ENC RQ_ENC ")", "(" LQ RQ ")" },
+    { "()", "(\\0001\\0)", 9, "(simple)",
+      "( \\t\\n'\"\\033?""?/\\\\)", "(a\\:b)", "(a\\\\b)",
+      "(a' b)", "(" LQ_ENC RQ_ENC ")", "(" LQ RQ ")" } },
+
+  /* left_quote = ":" and right_quote = " " */
+  { { ": ", ":\\0001\\0 ", 9, ":simple ",
+      ":\\ \\t\\n'\"\\033?""?/\\\\ ", ":a:b ", ":a\\\\b ",
+      ":a'\\ b ", ":" LQ_ENC RQ_ENC " ", ":" LQ RQ " " },
+    { ": ", ":\\0001\\0 ", 9, ":simple ",
+      ":\\ \\t\\n'\"\\033?""?/\\\\ ", ":a:b ", ":a\\\\b ",
+      ":a'\\ b ", ":" LQ_ENC RQ_ENC " ", ":" LQ RQ " " },
+    { ": ", ":\\0001\\0 ", 9, ":simple ",
+      ":\\ \\t\\n'\"\\033?""?/\\\\ ", ":a\\:b ", ":a\\\\b ",
+      ":a'\\ b ", ":" LQ_ENC RQ_ENC " ", ":" LQ RQ " " } },
+
+  /* left_quote = " " and right_quote = ":" */
+  { { " :", " \\0001\\0:", 9, " simple:",
+      "  \\t\\n'\"\\033?""?/\\\\:", " a\\:b:", " a\\\\b:",
+      " a' b:", " " LQ_ENC RQ_ENC ":", " " LQ RQ ":" },
+    { " :", " \\0001\\0:", 9, " simple:",
+      "  \\t\\n'\"\\033?""?/\\\\:", " a\\:b:", " a\\\\b:",
+      " a' b:", " " LQ_ENC RQ_ENC ":", " " LQ RQ ":" },
+    { " :", " \\0001\\0:", 9, " simple:",
+      "  \\t\\n'\"\\033?""?/\\\\:", " a\\:b:", " a\\\\b:",
+      " a' b:", " " LQ_ENC RQ_ENC ":", " " LQ RQ ":" } },
+
+  /* left_quote = "# " and right_quote = "\n" */
+  { { "# \n", "# \\0001\\0\n", 10, "# simple\n",
+      "#  \\t\\n'\"\\033?""?/\\\\\n", "# a:b\n", "# a\\\\b\n",
+      "# a' b\n", "# " LQ_ENC RQ_ENC "\n", "# " LQ RQ "\n" },
+    { "# \n", "# \\0001\\0\n", 10, "# simple\n",
+      "#  \\t\\n'\"\\033?""?/\\\\\n", "# a:b\n", "# a\\\\b\n",
+      "# a' b\n", "# " LQ_ENC RQ_ENC "\n", "# " LQ RQ "\n" },
+    { "# \n", "# \\0001\\0\n", 10, "# simple\n",
+      "#  \\t\\n'\"\\033?""?/\\\\\n", "# a\\:b\n", "# a\\\\b\n",
+      "# a' b\n", "# " LQ_ENC RQ_ENC "\n", "# " LQ RQ "\n" } },
+
+  /* left_quote = "\"'" and right_quote = "'\"" */
+  { { "\"''\"", "\"'\\0001\\0'\"", 11, "\"'simple'\"",
+      "\"' \\t\\n\\'\"\\033?""?/\\\\'\"", "\"'a:b'\"", "\"'a\\\\b'\"",
+      "\"'a' b'\"", "\"'" LQ_ENC RQ_ENC "'\"", "\"'" LQ RQ "'\"" },
+    { "\"''\"", "\"'\\0001\\0'\"", 11, "\"'simple'\"",
+      "\"' \\t\\n\\'\"\\033?""?/\\\\'\"", "\"'a:b'\"", "\"'a\\\\b'\"",
+      "\"'a' b'\"", "\"'" LQ_ENC RQ_ENC "'\"", "\"'" LQ RQ "'\"" },
+    { "\"''\"", "\"'\\0001\\0'\"", 11, "\"'simple'\"",
+      "\"' \\t\\n\\'\"\\033?""?/\\\\'\"", "\"'a\\:b'\"", "\"'a\\\\b'\"",
+      "\"'a' b'\"", "\"'" LQ_ENC RQ_ENC "'\"", "\"'" LQ RQ "'\"" } }
+};
+
+static char *
+use_quote_double_quotes (const char *str, size_t *len)
+{
+  char *p = *len == SIZE_MAX ? quotearg_char (str, '"')
+                               : quotearg_char_mem (str, *len, '"');
+  *len = strlen (p);
+  return p;
+}
+
+int
+main (int argc _GL_UNUSED, char *argv[])
+{
+  int i;
+  bool ascii_only = MB_CUR_MAX == 1 && !isprint ((unsigned char) LQ[0]);
+
+  /* This part of the program is hard-wired to the C locale since it
+     does not call setlocale.  However, according to POSIX, the use of
+     8-bit bytes in a character context in the C locale gives
+     unspecified results (that is, the C locale charset is allowed to
+     be unibyte with 8-bit bytes rejected [ASCII], unibyte with 8-bit
+     bytes being characters [often ISO-8859-1], or multibyte [often
+     UTF-8]).  We assume that the latter two cases will be
+     indistinguishable in this test - that is, the LQ and RQ sequences
+     will pass through unchanged in either type of charset.  So when
+     testing for quoting of str7, use the ascii_only flag to decide
+     what to expect for the 8-bit data being quoted.  */
+  ASSERT (!isprint ('\033'));
+  for (i = literal_quoting_style; i <= clocale_quoting_style; i++)
+    {
+      set_quoting_style (NULL, (enum quoting_style) i);
+      if (!(i == locale_quoting_style || i == clocale_quoting_style)
+          || (strcmp (locale_charset (), "ASCII") == 0
+              || strcmp (locale_charset (), "ANSI_X3.4-1968") == 0))
+        {
+          compare_strings (use_quotearg_buffer, &results_g[i].group1,
+                           ascii_only);
+          compare_strings (use_quotearg, &results_g[i].group2,
+                           ascii_only);
+          if (i == c_quoting_style)
+            compare_strings (use_quote_double_quotes, &results_g[i].group2,
+                             ascii_only);
+          compare_strings (use_quotearg_colon, &results_g[i].group3,
+                           ascii_only);
+        }
+    }
+
+  set_quoting_style (NULL, literal_quoting_style);
+  ASSERT (set_quoting_flags (NULL, QA_ELIDE_NULL_BYTES) == 0);
+  compare_strings (use_quotearg_buffer, &flag_results[0].group1, ascii_only);
+  compare_strings (use_quotearg, &flag_results[0].group2, ascii_only);
+  compare_strings (use_quotearg_colon, &flag_results[0].group3, ascii_only);
+
+  set_quoting_style (NULL, c_quoting_style);
+  ASSERT (set_quoting_flags (NULL, QA_ELIDE_OUTER_QUOTES)
+          == QA_ELIDE_NULL_BYTES);
+  compare_strings (use_quotearg_buffer, &flag_results[1].group1, ascii_only);
+  compare_strings (use_quotearg, &flag_results[1].group2, ascii_only);
+  compare_strings (use_quote_double_quotes, &flag_results[1].group2,
+                   ascii_only);
+  compare_strings (use_quotearg_colon, &flag_results[1].group3, ascii_only);
+
+  ASSERT (set_quoting_flags (NULL, QA_SPLIT_TRIGRAPHS)
+          == QA_ELIDE_OUTER_QUOTES);
+  compare_strings (use_quotearg_buffer, &flag_results[2].group1, ascii_only);
+  compare_strings (use_quotearg, &flag_results[2].group2, ascii_only);
+  compare_strings (use_quote_double_quotes, &flag_results[2].group2,
+                   ascii_only);
+  compare_strings (use_quotearg_colon, &flag_results[2].group3, ascii_only);
+
+  ASSERT (set_quoting_flags (NULL, 0) == QA_SPLIT_TRIGRAPHS);
+
+  for (i = 0; i < sizeof custom_quotes / sizeof *custom_quotes; ++i)
+    {
+      set_custom_quoting (NULL,
+                          custom_quotes[i][0], custom_quotes[i][1]);
+      compare_strings (use_quotearg_buffer, &custom_results[i].group1,
+                       ascii_only);
+      compare_strings (use_quotearg, &custom_results[i].group2, ascii_only);
+      compare_strings (use_quotearg_colon, &custom_results[i].group3,
+                       ascii_only);
+    }
+
+  {
+    /* Trigger the bug whereby quotearg_buffer would read beyond the NUL
+       that defines the end of the string being quoted.  Use an input
+       string whose NUL is the last byte before an unreadable page.  */
+    char *z = zerosize_ptr ();
+
+    if (z)
+      {
+        size_t q_len = 1024;
+        char *q = malloc (q_len + 1);
+        char buf[10];
+        memset (q, 'Q', q_len);
+        q[q_len] = 0;
+
+        /* Z points to the boundary between a readable/writable page
+           and one that is neither readable nor writable.  Position
+           our string so its NUL is at the end of the writable one.  */
+        char const *str = "____";
+        size_t s_len = strlen (str);
+        z -= s_len + 1;
+        memcpy (z, str, s_len + 1);
+
+        set_custom_quoting (NULL, q, q);
+        /* Whether this actually triggers a SEGV depends on the
+           implementation of memcmp: whether it compares only byte-at-
+           a-time, and from left to right (no SEGV) or some other way.  */
+        size_t n = quotearg_buffer (buf, sizeof buf, z, SIZE_MAX, NULL);
+        ASSERT (n == s_len + 2 * q_len);
+        ASSERT (memcmp (buf, q, sizeof buf) == 0);
+        free (q);
+      }
+  }
+
+  quotearg_free ();
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-quotearg.h b/src/grep/gnulib-tests/test-quotearg.h
new file mode 100644
index 0000000..065b54b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-quotearg.h
@@ -0,0 +1,128 @@
+/* Test of quotearg family of functions.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2008.  */
+
+struct result_strings {
+  char const *str1; /* Translation of "".  */
+  char const *str2; /* Translation of "\0""1\0".  */
+  size_t len2; /* Length of str2.  */
+  char const *str3; /* Translation of "simple".  */
+  char const *str4; /* Translation of " \t\n'\"\033?""?/\\".  */
+  char const *str5; /* Translation of "a:b".  */
+  char const *str6; /* Translation of "a\\b".  */
+  char const *str7; /* Translation of "a' b".  */
+  char const *str8a; /* Translation of LQ RQ, in ASCII charset.  */
+  char const *str8b; /* Translation of LQ RQ, in Latin1 or UTF-8 charset.  */
+};
+
+struct result_groups {
+  struct result_strings group1; /* Via quotearg_buffer.  */
+  struct result_strings group2; /* Via quotearg{,_mem}.  */
+  struct result_strings group3; /* Via quotearg_colon{,_mem}.  */
+};
+
+/* These quotes are borrowed from a pt_PT.utf8 translation.  */
+# define LQ "\302\253"
+# define RQ "\302\273"
+# define LQ_ENC "\\302\\253"
+# define RQ_ENC "\\302\\273"
+# define RQ_ESC "\\\302\273"
+
+static struct result_strings inputs = {
+  "", "\0001\0", 3, "simple", " \t\n'\"\033?""?/\\", "a:b", "a\\b",
+  "a' b", LQ RQ, NULL
+};
+
+static void
+compare (char const *a, size_t la, char const *b, size_t lb)
+{
+  ASSERT (la == lb);
+  ASSERT (memcmp (a, b, la) == 0);
+  ASSERT (b[lb] == '\0');
+}
+
+static void
+compare_strings (char *(func) (char const *, size_t *),
+                 struct result_strings *results, bool ascii_only)
+{
+  size_t len;
+  char *p;
+
+  len = 0;
+  p = func (inputs.str1, &len);
+  compare (results->str1, strlen (results->str1), p, len);
+
+  len = inputs.len2;
+  p = func (inputs.str2, &len);
+  compare (results->str2, results->len2, p, len);
+
+  len = SIZE_MAX;
+  p = func (inputs.str3, &len);
+  compare (results->str3, strlen (results->str3), p, len);
+
+  len = strlen (inputs.str4);
+  p = func (inputs.str4, &len);
+  compare (results->str4, strlen (results->str4), p, len);
+
+  len = SIZE_MAX;
+  p = func (inputs.str5, &len);
+  compare (results->str5, strlen (results->str5), p, len);
+
+  len = strlen (inputs.str6);
+  p = func (inputs.str6, &len);
+  compare (results->str6, strlen (results->str6), p, len);
+
+  len = strlen (inputs.str7);
+  p = func (inputs.str7, &len);
+  compare (results->str7, strlen (results->str7), p, len);
+
+  len = strlen (inputs.str8a);
+  p = func (inputs.str8a, &len);
+  if (ascii_only)
+    compare (results->str8a, strlen (results->str8a), p, len);
+  else
+    compare (results->str8b, strlen (results->str8b), p, len);
+}
+
+static char *
+use_quotearg_buffer (const char *str, size_t *len)
+{
+  static char buf[100];
+  size_t size;
+  memset (buf, 0xa5, 100);
+  size = quotearg_buffer (buf, 100, str, *len, NULL);
+  *len = size;
+  ASSERT ((unsigned char) buf[size + 1] == 0xa5);
+  return buf;
+}
+
+static char *
+use_quotearg (const char *str, size_t *len)
+{
+  char *p = *len == SIZE_MAX ? quotearg (str) : quotearg_mem (str, *len);
+  *len = strlen (p);
+  return p;
+}
+
+static char *
+use_quotearg_colon (const char *str, size_t *len)
+{
+  char *p = (*len == SIZE_MAX ? quotearg_colon (str)
+             : quotearg_colon_mem (str, *len));
+  *len = strlen (p);
+  return p;
+}
diff --git a/src/grep/gnulib-tests/test-raise.c b/src/grep/gnulib-tests/test-raise.c
new file mode 100644
index 0000000..d7fe02b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-raise.c
@@ -0,0 +1,51 @@
+/* Test raising a signal.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <signal.h>
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (raise, int, (int));
+
+#include <stdlib.h>
+
+#include "macros.h"
+
+/* It is safe to use _Noreturn here: exit() never returns, and GCC knows that
+   exit() is a non-returning function, even on platforms where its declaration
+   in <stdlib.h> does not have the 'noreturn' attribute.  */
+static _Noreturn void
+handler (int sig)
+{
+  _exit (0);
+}
+
+int
+main (void)
+{
+  /* Test behaviour for invalid argument.  */
+  ASSERT (raise (-1) != 0);
+
+  /* Test behaviour for SIGINT.  */
+  ASSERT (signal (SIGINT, handler) != SIG_ERR);
+
+  raise (SIGINT);
+
+  /* We should not get here, because the handler takes away the control.  */
+  exit (1);
+}
diff --git a/src/grep/gnulib-tests/test-rawmemchr.c b/src/grep/gnulib-tests/test-rawmemchr.c
new file mode 100644
index 0000000..f53f875
--- /dev/null
+++ b/src/grep/gnulib-tests/test-rawmemchr.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2008-2021 Free Software Foundation, Inc.
+ * Written by Eric Blake and Bruno Haible
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (rawmemchr, void *, (void const *, int));
+
+#include <stdlib.h>
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+/* Calculating void * + int is not portable, so this wrapper converts
+   to char * to make the tests easier to write.  */
+#define RAWMEMCHR (char *) rawmemchr
+
+int
+main (void)
+{
+  size_t n = 0x100000;
+  char *input = malloc (n + 1);
+  ASSERT (input);
+
+  input[0] = 'a';
+  input[1] = 'b';
+  memset (input + 2, 'c', 1024);
+  memset (input + 1026, 'd', n - 1028);
+  input[n - 2] = 'e';
+  input[n - 1] = 'a';
+  input[n] = '\0';
+
+  /* Basic behavior tests.  */
+  ASSERT (RAWMEMCHR (input, 'a') == input);
+  ASSERT (RAWMEMCHR (input, 'b') == input + 1);
+  ASSERT (RAWMEMCHR (input, 'c') == input + 2);
+  ASSERT (RAWMEMCHR (input, 'd') == input + 1026);
+
+  ASSERT (RAWMEMCHR (input + 1, 'a') == input + n - 1);
+  ASSERT (RAWMEMCHR (input + 1, 'e') == input + n - 2);
+  ASSERT (RAWMEMCHR (input + 1, 0x789abc00 | 'e') == input + n - 2);
+
+  ASSERT (RAWMEMCHR (input, '\0') == input + n);
+
+  /* Alignment tests.  */
+  {
+    int i, j;
+    for (i = 0; i < 32; i++)
+      {
+        for (j = 0; j < 256; j++)
+          input[i + j] = j;
+        for (j = 0; j < 256; j++)
+          {
+            ASSERT (RAWMEMCHR (input + i, j) == input + i + j);
+          }
+      }
+  }
+
+  /* Ensure that no unaligned oversized reads occur.  */
+  {
+    char *page_boundary = (char *) zerosize_ptr ();
+    size_t i;
+
+    if (!page_boundary)
+      page_boundary = input + 4096;
+    memset (page_boundary - 512, '1', 511);
+    page_boundary[-1] = '2';
+    for (i = 1; i <= 512; i++)
+      ASSERT (RAWMEMCHR (page_boundary - i, (i * 0x01010100) | '2')
+              == page_boundary - 1);
+  }
+
+  free (input);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-read.c b/src/grep/gnulib-tests/test-read.c
new file mode 100644
index 0000000..9d2a9ce
--- /dev/null
+++ b/src/grep/gnulib-tests/test-read.c
@@ -0,0 +1,73 @@
+/* Test the read() function.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (read, ssize_t, (int, void *, size_t));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  const char *filename = "test-read.tmp";
+  int fd;
+
+  /* Create a file with a simple contents.  */
+  fd = open (filename, O_CREAT | O_WRONLY, 0600);
+  ASSERT (fd >= 0);
+  ASSERT (write (fd, "Hello World", 11) == 11);
+  ASSERT (close (fd) == 0);
+
+  /* Read from the middle of the file.  */
+  fd = open (filename, O_RDONLY);
+  ASSERT (fd >= 0);
+  ASSERT (lseek (fd, 6, SEEK_SET) == 6);
+  {
+    char buf[10];
+    ssize_t ret = read (fd, buf, 10);
+    ASSERT (ret == 5);
+    ASSERT (memcmp (buf, "World", 5) == 0);
+  }
+  ASSERT (close (fd) == 0);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    char byte;
+    errno = 0;
+    ASSERT (read (-1, &byte, 1) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    char byte;
+    close (99);
+    errno = 0;
+    ASSERT (read (99, &byte, 1) == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  /* Clean up.  */
+  unlink (filename);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-realloc-gnu.c b/src/grep/gnulib-tests/test-realloc-gnu.c
new file mode 100644
index 0000000..6f98be0
--- /dev/null
+++ b/src/grep/gnulib-tests/test-realloc-gnu.c
@@ -0,0 +1,49 @@
+/* Test of realloc function.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <errno.h>
+#include <stdint.h>
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+  /* Check that realloc (NULL, 0) is not a NULL pointer.  */
+  void *volatile p = realloc (NULL, 0);
+  ASSERT (p != NULL);
+
+  /* Check that realloc (p, n) fails when p is non-null and n exceeds
+     PTRDIFF_MAX.  */
+  if (PTRDIFF_MAX < SIZE_MAX)
+    {
+      size_t one = argc != 12345;
+      p = realloc (p, PTRDIFF_MAX + one);
+      ASSERT (p == NULL);
+      /* Avoid a test failure due to glibc bug
+         <https://sourceware.org/bugzilla/show_bug.cgi?id=27870>.  */
+      if (!getenv ("MALLOC_CHECK_"))
+        ASSERT (errno == ENOMEM);
+    }
+
+  free (p);
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-reallocarray.c b/src/grep/gnulib-tests/test-reallocarray.c
new file mode 100644
index 0000000..ff90962
--- /dev/null
+++ b/src/grep/gnulib-tests/test-reallocarray.c
@@ -0,0 +1,58 @@
+/* Test of reallocarray function.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <errno.h>
+#include <stdint.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (reallocarray, void *, (void *, size_t, size_t));
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* Check that reallocarray fails when requested to allocate a block
+     of memory larger than PTRDIFF_MAX or SIZE_MAX bytes.  */
+  for (size_t n = 2; n != 0; n <<= 1)
+    {
+      void *volatile p = NULL;
+
+      if (PTRDIFF_MAX / n + 1 <= SIZE_MAX)
+        {
+          p = reallocarray (p, PTRDIFF_MAX / n + 1, n);
+          ASSERT (p == NULL);
+          ASSERT (errno == ENOMEM);
+        }
+
+      p = reallocarray (p, SIZE_MAX / n + 1, n);
+      ASSERT (p == NULL);
+      ASSERT (errno == ENOMEM
+              || errno == EOVERFLOW /* NetBSD */);
+
+      /* Reallocarray should not crash with zero sizes.  */
+      p = reallocarray (p, 0, n);
+      p = reallocarray (p, n, 0);
+      free (p);
+    }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-regex.c b/src/grep/gnulib-tests/test-regex.c
new file mode 100644
index 0000000..ed4ca64
--- /dev/null
+++ b/src/grep/gnulib-tests/test-regex.c
@@ -0,0 +1,488 @@
+/* Test regular expressions
+   Copyright 1996-2001, 2003-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "regex.h"
+
+#include <locale.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wctype.h>
+#if HAVE_DECL_ALARM
+# include <unistd.h>
+# include <signal.h>
+#endif
+
+#include "localcharset.h"
+
+static int exit_status;
+
+static void
+report_error (char const *format, ...)
+{
+  va_list args;
+  va_start (args, format);
+  fprintf (stderr, "test-regex: ");
+  vfprintf (stderr, format, args);
+  fprintf (stderr, "\n");
+  va_end (args);
+  exit_status = 1;
+}
+
+/* Check whether it's really a UTF-8 locale.
+   On mingw, setlocale (LC_ALL, "en_US.UTF-8") succeeds but returns
+   "English_United States.1252", with locale_charset () returning "CP1252".  */
+static int
+really_utf8 (void)
+{
+  return strcmp (locale_charset (), "UTF-8") == 0;
+}
+
+/* Tests supposed to match; copied from glibc posix/bug-regex11.c.  */
+static struct
+{
+  const char *pattern;
+  const char *string;
+  int flags, nmatch;
+  regmatch_t rm[5];
+} const tests[] = {
+  /* Test for newline handling in regex.  */
+  { "[^~]*~", "\nx~y", 0, 2, { { 0, 3 }, { -1, -1 } } },
+  /* Other tests.  */
+  { "a(.*)b", "a b", REG_EXTENDED, 2, { { 0, 3 }, { 1, 2 } } },
+  { ".*|\\([KIO]\\)\\([^|]*\\).*|?[KIO]", "10~.~|P|K0|I10|O16|?KSb", 0, 3,
+    { { 0, 21 }, { 15, 16 }, { 16, 18 } } },
+  { ".*|\\([KIO]\\)\\([^|]*\\).*|?\\1", "10~.~|P|K0|I10|O16|?KSb", 0, 3,
+    { { 0, 21 }, { 8, 9 }, { 9, 10 } } },
+  { "^\\(a*\\)\\1\\{9\\}\\(a\\{0,9\\}\\)\\([0-9]*;.*[^a]\\2\\([0-9]\\)\\)",
+    "a1;;0a1aa2aaa3aaaa4aaaaa5aaaaaa6aaaaaaa7aaaaaaaa8aaaaaaaaa9aa2aa1a0", 0,
+    5, { { 0, 67 }, { 0, 0 }, { 0, 1 }, { 1, 67 }, { 66, 67 } } },
+  /* Test for BRE expression anchoring.  POSIX says just that this may match;
+     in glibc regex it always matched, so avoid changing it.  */
+  { "\\(^\\|foo\\)bar", "bar", 0, 2, { { 0, 3 }, { -1, -1 } } },
+  { "\\(foo\\|^\\)bar", "bar", 0, 2, { { 0, 3 }, { -1, -1 } } },
+  /* In ERE this must be treated as an anchor.  */
+  { "(^|foo)bar", "bar", REG_EXTENDED, 2, { { 0, 3 }, { -1, -1 } } },
+  { "(foo|^)bar", "bar", REG_EXTENDED, 2, { { 0, 3 }, { -1, -1 } } },
+  /* Here ^ cannot be treated as an anchor according to POSIX.  */
+  { "(^|foo)bar", "(^|foo)bar", 0, 2, { { 0, 10 }, { -1, -1 } } },
+  { "(foo|^)bar", "(foo|^)bar", 0, 2, { { 0, 10 }, { -1, -1 } } },
+  /* More tests on backreferences.  */
+  { "()\\1", "x", REG_EXTENDED, 2, { { 0, 0 }, { 0, 0 } } },
+  { "()x\\1", "x", REG_EXTENDED, 2, { { 0, 1 }, { 0, 0 } } },
+  { "()\\1*\\1*", "", REG_EXTENDED, 2, { { 0, 0 }, { 0, 0 } } },
+  { "([0-9]).*\\1(a*)", "7;7a6", REG_EXTENDED, 3, { { 0, 4 }, { 0, 1 }, { 3, 4 } } },
+  { "([0-9]).*\\1(a*)", "7;7a", REG_EXTENDED, 3, { { 0, 4 }, { 0, 1 }, { 3, 4 } } },
+  { "(b)()c\\1", "bcb", REG_EXTENDED, 3, { { 0, 3 }, { 0, 1 }, { 1, 1 } } },
+  { "()(b)c\\2", "bcb", REG_EXTENDED, 3, { { 0, 3 }, { 0, 0 }, { 0, 1 } } },
+  { "a(b)()c\\1", "abcb", REG_EXTENDED, 3, { { 0, 4 }, { 1, 2 }, { 2, 2 } } },
+  { "a()(b)c\\2", "abcb", REG_EXTENDED, 3, { { 0, 4 }, { 1, 1 }, { 1, 2 } } },
+  { "()(b)\\1c\\2", "bcb", REG_EXTENDED, 3, { { 0, 3 }, { 0, 0 }, { 0, 1 } } },
+  { "(b())\\2\\1", "bbbb", REG_EXTENDED, 3, { { 0, 2 }, { 0, 1 }, { 1, 1 } } },
+  { "a()(b)\\1c\\2", "abcb", REG_EXTENDED, 3, { { 0, 4 }, { 1, 1 }, { 1, 2 } } },
+  { "a()d(b)\\1c\\2", "adbcb", REG_EXTENDED, 3, { { 0, 5 }, { 1, 1 }, { 2, 3 } } },
+  { "a(b())\\2\\1", "abbbb", REG_EXTENDED, 3, { { 0, 3 }, { 1, 2 }, { 2, 2 } } },
+  { "(bb())\\2\\1", "bbbb", REG_EXTENDED, 3, { { 0, 4 }, { 0, 2 }, { 2, 2 } } },
+  { "^([^,]*),\\1,\\1$", "a,a,a", REG_EXTENDED, 2, { { 0, 5 }, { 0, 1 } } },
+  { "^([^,]*),\\1,\\1$", "ab,ab,ab", REG_EXTENDED, 2, { { 0, 8 }, { 0, 2 } } },
+  { "^([^,]*),\\1,\\1,\\1$", "abc,abc,abc,abc", REG_EXTENDED, 2,
+    { { 0, 15 }, { 0, 3 } } },
+  { "^(.?)(.?)(.?)(.?)(.?).?\\5\\4\\3\\2\\1$",
+    "level", REG_NOSUB | REG_EXTENDED, 0, { { -1, -1 } } },
+  { "^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.).?\\9\\8\\7\\6\\5\\4\\3\\2\\1$|^.?$",
+    "level", REG_NOSUB | REG_EXTENDED, 0, { { -1, -1 } } },
+  { "^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.).?\\9\\8\\7\\6\\5\\4\\3\\2\\1$|^.?$",
+    "abcdedcba", REG_EXTENDED, 1, { { 0, 9 } } },
+  { "^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.).?\\9\\8\\7\\6\\5\\4\\3\\2\\1$|^.?$",
+    "ababababa", REG_EXTENDED, 1, { { 0, 9 } } },
+  { "^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?).?\\9\\8\\7\\6\\5\\4\\3\\2\\1$",
+    "level", REG_NOSUB | REG_EXTENDED, 0, { { -1, -1 } } },
+  { "^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?).?\\9\\8\\7\\6\\5\\4\\3\\2\\1$",
+    "ababababa", REG_EXTENDED, 1, { { 0, 9 } } },
+  /* Test for *+ match.  */
+  { "^a*+(.)", "ab", REG_EXTENDED, 2, { { 0, 2 }, { 1, 2 } } },
+  /* Test for ** match.  */
+  { "^(a*)*(.)", "ab", REG_EXTENDED, 3, { { 0, 2 }, { 0, 1 }, { 1, 2 } } },
+};
+
+static void
+bug_regex11 (void)
+{
+  regex_t re;
+  regmatch_t rm[5];
+  size_t i;
+  int n;
+
+  for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
+    {
+      n = regcomp (&re, tests[i].pattern, tests[i].flags);
+      if (n != 0)
+	{
+	  char buf[500];
+	  regerror (n, &re, buf, sizeof (buf));
+	  report_error ("%s: regcomp %zd failed: %s", tests[i].pattern, i, buf);
+	  continue;
+	}
+
+      if (regexec (&re, tests[i].string, tests[i].nmatch, rm, 0))
+	{
+	  report_error ("%s: regexec %zd failed", tests[i].pattern, i);
+	  regfree (&re);
+	  continue;
+	}
+
+      for (n = 0; n < tests[i].nmatch; ++n)
+	if (rm[n].rm_so != tests[i].rm[n].rm_so
+              || rm[n].rm_eo != tests[i].rm[n].rm_eo)
+	  {
+	    if (tests[i].rm[n].rm_so == -1 && tests[i].rm[n].rm_eo == -1)
+	      break;
+	    report_error ("%s: regexec %zd match failure rm[%d] %d..%d",
+                          tests[i].pattern, i, n,
+                          (int) rm[n].rm_so, (int) rm[n].rm_eo);
+	    break;
+	  }
+
+      regfree (&re);
+    }
+}
+
+int
+main (void)
+{
+  static struct re_pattern_buffer regex;
+  unsigned char folded_chars[UCHAR_MAX + 1];
+  int i;
+  const char *s;
+  struct re_registers regs;
+
+#if HAVE_DECL_ALARM
+  /* In case a bug causes glibc to go into an infinite loop.
+     The tests should take less than 10 s on a reasonably modern CPU.  */
+  int alarm_value = 1000;
+  signal (SIGALRM, SIG_DFL);
+  alarm (alarm_value);
+#endif
+
+  bug_regex11 ();
+
+  if (setlocale (LC_ALL, "en_US.UTF-8"))
+    {
+      {
+        /* https://sourceware.org/ml/libc-hacker/2006-09/msg00008.html
+           This test needs valgrind to catch the bug on Debian
+           GNU/Linux 3.1 x86, but it might catch the bug better
+           on other platforms and it shouldn't hurt to try the
+           test here.  */
+        static char const pat[] = "insert into";
+        static char const data[] =
+          "\xFF\0\x12\xA2\xAA\xC4\xB1,K\x12\xC4\xB1*\xACK";
+        re_set_syntax (RE_SYNTAX_GREP | RE_HAT_LISTS_NOT_NEWLINE
+                       | RE_ICASE);
+        memset (&regex, 0, sizeof regex);
+        s = re_compile_pattern (pat, sizeof pat - 1, &regex);
+        if (s)
+          report_error ("%s: %s", pat, s);
+        else
+          {
+            memset (&regs, 0, sizeof regs);
+            i = re_search (&regex, data, sizeof data - 1,
+                           0, sizeof data - 1, &regs);
+            if (i != -1)
+              report_error ("re_search '%s' on '%s' returned %d",
+                            pat, data, i);
+            regfree (&regex);
+            free (regs.start);
+            free (regs.end);
+          }
+      }
+
+      if (really_utf8 ())
+        {
+          /* This test is from glibc bug 15078.
+             The test case is from Andreas Schwab in
+             <https://sourceware.org/ml/libc-alpha/2013-01/msg00967.html>.
+          */
+          static char const pat[] = "[^x]x";
+          static char const data[] =
+            /* <U1000><U103B><U103D><U1014><U103A><U102F><U1015><U103A> */
+            "\xe1\x80\x80"
+            "\xe1\x80\xbb"
+            "\xe1\x80\xbd"
+            "\xe1\x80\x94"
+            "\xe1\x80\xba"
+            "\xe1\x80\xaf"
+            "\xe1\x80\x95"
+            "\xe1\x80\xba"
+            "x";
+          re_set_syntax (0);
+          memset (&regex, 0, sizeof regex);
+          s = re_compile_pattern (pat, sizeof pat - 1, &regex);
+          if (s)
+            report_error ("%s: %s", pat, s);
+          else
+            {
+              memset (&regs, 0, sizeof regs);
+              i = re_search (&regex, data, sizeof data - 1,
+                             0, sizeof data - 1, 0);
+              if (i != 0 && i != 21)
+                report_error ("re_search '%s' on '%s' returned %d",
+                              pat, data, i);
+              regfree (&regex);
+              free (regs.start);
+              free (regs.end);
+            }
+        }
+
+      if (! setlocale (LC_ALL, "C"))
+        {
+          report_error ("setlocale \"C\" failed");
+          return exit_status;
+        }
+    }
+
+  if (setlocale (LC_ALL, "tr_TR.UTF-8"))
+    {
+      if (really_utf8 () && towupper (L'i') == 0x0130 /* U+0130; see below.  */)
+        {
+          re_set_syntax (RE_SYNTAX_GREP | RE_ICASE);
+          memset (&regex, 0, sizeof regex);
+          static char const pat[] = "i";
+          s = re_compile_pattern (pat, sizeof pat - 1, &regex);
+          if (s)
+            report_error ("%s: %s", pat, s);
+          else
+            {
+              /* UTF-8 encoding of U+0130 LATIN CAPITAL LETTER I WITH DOT ABOVE.
+                 In Turkish, this is the upper-case equivalent of ASCII "i".
+                 Older versions of Gnulib failed to match "i" to U+0130 when
+                 ignoring case in Turkish <https://bugs.gnu.org/43577>.  */
+              static char const data[] = "\xc4\xb0";
+
+              memset (&regs, 0, sizeof regs);
+              i = re_search (&regex, data, sizeof data - 1, 0, sizeof data - 1,
+                             &regs);
+              if (i != 0)
+                report_error ("re_search '%s' on '%s' returned %d",
+                              pat, data, i);
+              regfree (&regex);
+              free (regs.start);
+              free (regs.end);
+            }
+        }
+
+      if (! setlocale (LC_ALL, "C"))
+        {
+          report_error ("setlocale \"C\" failed");
+          return exit_status;
+        }
+    }
+
+  /* This test is from glibc bug 3957, reported by Andrew Mackey.  */
+  re_set_syntax (RE_SYNTAX_EGREP | RE_HAT_LISTS_NOT_NEWLINE);
+  memset (&regex, 0, sizeof regex);
+  static char const pat_3957[] = "a[^x]b";
+  s = re_compile_pattern (pat_3957, sizeof pat_3957 - 1, &regex);
+  if (s)
+    report_error ("%s: %s", pat_3957, s);
+  else
+    {
+      /* This should fail, but succeeds for glibc-2.5.  */
+      memset (&regs, 0, sizeof regs);
+      static char const data[] = "a\nb";
+      i = re_search (&regex, data, sizeof data - 1, 0, sizeof data - 1, &regs);
+      if (i != -1)
+        report_error ("re_search '%s' on '%s' returned %d",
+                      pat_3957, data, i);
+      regfree (&regex);
+      free (regs.start);
+      free (regs.end);
+    }
+
+  /* This regular expression is from Spencer ere test number 75
+     in grep-2.3.  */
+  re_set_syntax (RE_SYNTAX_POSIX_EGREP);
+  memset (&regex, 0, sizeof regex);
+  for (i = 0; i <= UCHAR_MAX; i++)
+    folded_chars[i] = i;
+  regex.translate = folded_chars;
+  static char const pat75[] = "a[[:@:>@:]]b\n";
+  s = re_compile_pattern (pat75, sizeof pat75 - 1, &regex);
+  /* This should fail with _Invalid character class name_ error.  */
+  if (!s)
+    {
+      report_error ("re_compile_pattern: failed to reject '%s'", pat75);
+      regfree (&regex);
+    }
+
+  /* Ensure that [b-a] is diagnosed as invalid, when
+     using RE_NO_EMPTY_RANGES. */
+  re_set_syntax (RE_SYNTAX_POSIX_EGREP | RE_NO_EMPTY_RANGES);
+  memset (&regex, 0, sizeof regex);
+  static char const pat_b_a[] = "a[b-a]";
+  s = re_compile_pattern (pat_b_a, sizeof pat_b_a - 1, &regex);
+  if (s == 0)
+    {
+      report_error ("re_compile_pattern: failed to reject '%s'", pat_b_a);
+      regfree (&regex);
+    }
+
+  /* This should succeed, but does not for glibc-2.1.3.  */
+  memset (&regex, 0, sizeof regex);
+  static char const pat_213[] = "{1";
+  s = re_compile_pattern (pat_213, sizeof pat_213 - 1, &regex);
+  if (s)
+    report_error ("%s: %s", pat_213, s);
+  else
+    regfree (&regex);
+
+  /* The following example is derived from a problem report
+     against gawk from Jorge Stolfi <stolfi@ic.unicamp.br>.  */
+  memset (&regex, 0, sizeof regex);
+  static char const pat_stolfi[] = "[an\371]*n";
+  s = re_compile_pattern (pat_stolfi, sizeof pat_stolfi - 1, &regex);
+  if (s)
+    report_error ("%s: %s", pat_stolfi, s);
+  /* This should match, but does not for glibc-2.2.1.  */
+  else
+    {
+      memset (&regs, 0, sizeof regs);
+      static char const data[] = "an";
+      i = re_match (&regex, data, sizeof data - 1, 0, &regs);
+      if (i != 2)
+        report_error ("re_match '%s' on '%s' at 2 returned %d",
+                      pat_stolfi, data, i);
+      regfree (&regex);
+      free (regs.start);
+      free (regs.end);
+    }
+
+  memset (&regex, 0, sizeof regex);
+  static char const pat_x[] = "x";
+  s = re_compile_pattern (pat_x, sizeof pat_x - 1, &regex);
+  if (s)
+    report_error ("%s: %s", pat_x, s);
+  /* glibc-2.2.93 does not work with a negative RANGE argument.  */
+  else
+    {
+      memset (&regs, 0, sizeof regs);
+      static char const data[] = "wxy";
+      i = re_search (&regex, data, sizeof data - 1, 2, -2, &regs);
+      if (i != 1)
+        report_error ("re_search '%s' on '%s' returned %d", pat_x, data, i);
+      regfree (&regex);
+      free (regs.start);
+      free (regs.end);
+    }
+
+  /* The version of regex.c in older versions of gnulib
+     ignored RE_ICASE.  Detect that problem too.  */
+  re_set_syntax (RE_SYNTAX_EMACS | RE_ICASE);
+  memset (&regex, 0, sizeof regex);
+  s = re_compile_pattern (pat_x, 1, &regex);
+  if (s)
+    report_error ("%s: %s", pat_x, s);
+  else
+    {
+      memset (&regs, 0, sizeof regs);
+      static char const data[] = "WXY";
+      i = re_search (&regex, data, sizeof data - 1, 0, 3, &regs);
+      if (i < 0)
+        report_error ("re_search '%s' on '%s' returned %d", pat_x, data, i);
+      regfree (&regex);
+      free (regs.start);
+      free (regs.end);
+    }
+
+  /* glibc bug 11053.  */
+  re_set_syntax (RE_SYNTAX_POSIX_BASIC);
+  memset (&regex, 0, sizeof regex);
+  static char const pat_sub2[] = "\\(a*\\)*a*\\1";
+  s = re_compile_pattern (pat_sub2, sizeof pat_sub2 - 1, &regex);
+  if (s)
+    report_error ("%s: %s", pat_sub2, s);
+  else
+    {
+      memset (&regs, 0, sizeof regs);
+      static char const data[] = "a";
+      int datalen = sizeof data - 1;
+      i = re_search (&regex, data, datalen, 0, datalen, &regs);
+      if (i != 0)
+        report_error ("re_search '%s' on '%s' returned %d", pat_sub2, data, i);
+      else if (regs.num_regs < 2)
+        report_error ("re_search '%s' on '%s' returned only %d registers",
+                      pat_sub2, data, (int) regs.num_regs);
+      else if (! (regs.start[0] == 0 && regs.end[0] == 1))
+        report_error ("re_search '%s' on '%s' returned wrong match [%d,%d)",
+                      pat_sub2, data, (int) regs.start[0], (int) regs.end[0]);
+      else if (! (regs.start[1] == 0 && regs.end[1] == 0))
+        report_error ("re_search '%s' on '%s' returned wrong submatch [%d,%d)",
+                      pat_sub2, data, (int) regs.start[1], (int) regs.end[1]);
+      regfree (&regex);
+      free (regs.start);
+      free (regs.end);
+    }
+
+  /* Catch a bug reported by Vin Shelton in
+     https://lists.gnu.org/r/bug-coreutils/2007-06/msg00089.html
+     */
+  re_set_syntax (RE_SYNTAX_POSIX_BASIC
+                 & ~RE_CONTEXT_INVALID_DUP
+                 & ~RE_NO_EMPTY_RANGES);
+  static char const pat_shelton[] = "[[:alnum:]_-]\\\\+$";
+  s = re_compile_pattern (pat_shelton, sizeof pat_shelton - 1, &regex);
+  if (s)
+    report_error ("%s: %s", pat_shelton, s);
+  else
+    regfree (&regex);
+
+  /* REG_STARTEND was added to glibc on 2004-01-15.
+     Reject older versions.  */
+  if (REG_STARTEND == 0)
+    report_error ("REG_STARTEND is zero");
+
+  /* Matching with the compiled form of this regexp would provoke
+     an assertion failure prior to glibc-2.28:
+       regexec.c:1375: pop_fail_stack: Assertion 'num >= 0' failed
+     With glibc-2.28, compilation fails and reports the invalid
+     back reference.  */
+  re_set_syntax (RE_SYNTAX_POSIX_EGREP);
+  memset (&regex, 0, sizeof regex);
+  static char const pat_badback[] = "0|()0|\\1|0";
+  s = re_compile_pattern (pat_badback, sizeof pat_badback, &regex);
+  if (!s && re_search (&regex, "x", 1, 0, 1, &regs) != -1)
+    s = "mishandled invalid back reference";
+  if (s && strcmp (s, "Invalid back reference") != 0)
+    report_error ("%s: %s", pat_badback, s);
+
+#if 0
+  /* It would be nice to reject hosts whose regoff_t values are too
+     narrow (including glibc on hosts with 64-bit ptrdiff_t and
+     32-bit int), but we should wait until glibc implements this
+     feature.  Otherwise, support for equivalence classes and
+     multibyte collation symbols would always be broken except
+     when compiling --without-included-regex.   */
+  if (sizeof (regoff_t) < sizeof (ptrdiff_t)
+      || sizeof (regoff_t) < sizeof (ssize_t))
+    report_error ("regoff_t values are too narrow");
+#endif
+
+  return exit_status;
+}
diff --git a/src/grep/gnulib-tests/test-sched.c b/src/grep/gnulib-tests/test-sched.c
new file mode 100644
index 0000000..f3c4195
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sched.c
@@ -0,0 +1,41 @@
+/* Test of <sched.h> substitute.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <sched.h>
+
+/* Check that 'struct sched_param' is defined.  */
+static struct sched_param a;
+
+/* Check that the SCHED_* macros are defined and compile-time constants.  */
+int b[] = { SCHED_FIFO, SCHED_RR, SCHED_OTHER };
+
+/* Check that the types are all defined.  */
+pid_t t1;
+
+static int f1;
+
+int
+main ()
+{
+  /* Check fields of 'struct sched_param'.  */
+  f1 = a.sched_priority;
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-select-fd.c b/src/grep/gnulib-tests/test-select-fd.c
new file mode 100644
index 0000000..229e821
--- /dev/null
+++ b/src/grep/gnulib-tests/test-select-fd.c
@@ -0,0 +1,72 @@
+/* Test of select() substitute, reading or writing from a given file descriptor.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/select.h>
+
+int
+main (int argc, char *argv[])
+{
+  if (argc == 4)
+    {
+      char mode = argv[1][0];
+
+      if (mode == 'r' || mode == 'w')
+        {
+          int fd = atoi (argv[2]);
+
+          if (fd >= 0)
+            {
+              const char *result_file_name = argv[3];
+              FILE *result_file = fopen (result_file_name, "wb");
+
+              if (result_file != NULL)
+                {
+                  fd_set fds;
+                  struct timeval timeout;
+                  int ret;
+
+                  FD_ZERO (&fds);
+                  FD_SET (fd, &fds);
+                  timeout.tv_sec = 0;
+                  timeout.tv_usec = 10000;
+                  ret = (mode == 'r'
+                         ? select (fd + 1, &fds, NULL, NULL, &timeout)
+                         : select (fd + 1, NULL, &fds, NULL, &timeout));
+                  if (ret < 0)
+                    {
+                      perror ("select failed");
+                      exit (1);
+                    }
+                  if ((ret == 0) != ! FD_ISSET (fd, &fds))
+                    {
+                      fprintf (stderr, "incorrect return value\n");
+                      exit (1);
+                    }
+                  fprintf (result_file, "%d\n", ret);
+                  exit (0);
+                }
+            }
+        }
+    }
+  fprintf (stderr, "Usage: test-select-fd mode fd result-file-name\n");
+  exit (1);
+}
diff --git a/src/grep/gnulib-tests/test-select-in.sh b/src/grep/gnulib-tests/test-select-in.sh
new file mode 100755
index 0000000..68176d3
--- /dev/null
+++ b/src/grep/gnulib-tests/test-select-in.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+# Test select() on file descriptors opened for reading.
+
+# This test is known to fail on Solaris 2.6 and older, due to its handling
+# of /dev/null.
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="$tmpfiles t-select-in.tmp"
+
+# Regular files.
+
+rm -f t-select-in.tmp
+${CHECKER} ./test-select-fd${EXEEXT} r 0 t-select-in.tmp < ./test-select-fd${EXEEXT}
+test `cat t-select-in.tmp` = "1" || exit 1
+
+# Pipes.
+
+rm -f t-select-in.tmp
+{ sleep 1; echo abc; } | \
+  { ${CHECKER} ./test-select-fd${EXEEXT} r 0 t-select-in.tmp; cat > /dev/null; }
+test `cat t-select-in.tmp` = "0" || exit 1
+
+rm -f t-select-in.tmp
+echo abc | { sleep 1; ${CHECKER} ./test-select-fd${EXEEXT} r 0 t-select-in.tmp; }
+test `cat t-select-in.tmp` = "1" || exit 1
+
+# Special files.
+# This part of the test is known to fail on Solaris 2.6 and older.
+
+rm -f t-select-in.tmp
+${CHECKER} ./test-select-fd${EXEEXT} r 0 t-select-in.tmp < /dev/null
+test `cat t-select-in.tmp` = "1" || exit 1
+
+rm -fr $tmpfiles
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-select-out.sh b/src/grep/gnulib-tests/test-select-out.sh
new file mode 100755
index 0000000..dbeace5
--- /dev/null
+++ b/src/grep/gnulib-tests/test-select-out.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+# Test select() on file descriptors opened for writing.
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="$tmpfiles t-select-out.out t-select-out.tmp"
+
+# Regular files.
+
+rm -f t-select-out.tmp
+${CHECKER} ./test-select-fd${EXEEXT} w 1 t-select-out.tmp > t-select-out.out
+test `cat t-select-out.tmp` = "1" || exit 1
+
+# Pipes.
+
+if false; then # This test fails on some platforms.
+  rm -f t-select-out.tmp
+  ( { echo abc; ${CHECKER} ./test-select-fd${EXEEXT} w 1 t-select-out.tmp; } | { sleep 1; cat; } ) > /dev/null
+  test `cat t-select-out.tmp` = "0" || exit 1
+fi
+
+rm -f t-select-out.tmp
+( { sleep 1; echo abc; ${CHECKER} ./test-select-fd${EXEEXT} w 1 t-select-out.tmp; } | cat) > /dev/null
+test `cat t-select-out.tmp` = "1" || exit 1
+
+# Special files.
+
+rm -f t-select-out.tmp
+${CHECKER} ./test-select-fd${EXEEXT} w 1 t-select-out.tmp > /dev/null
+test `cat t-select-out.tmp` = "1" || exit 1
+
+rm -fr $tmpfiles
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-select-stdin.c b/src/grep/gnulib-tests/test-select-stdin.c
new file mode 100644
index 0000000..26ca8a8
--- /dev/null
+++ b/src/grep/gnulib-tests/test-select-stdin.c
@@ -0,0 +1,83 @@
+/* Test of select() substitute, reading from stdin.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  printf ("Applying select() from standard input. Press Ctrl-C to abort.\n");
+  for (;;)
+    {
+      struct timeval before;
+      struct timeval after;
+      unsigned long spent_usec;
+      fd_set readfds;
+      struct timeval timeout;
+      int ret;
+
+      gettimeofday (&before, NULL);
+
+      FD_ZERO (&readfds);
+      FD_SET (0, &readfds);
+      timeout.tv_sec = 0;
+      timeout.tv_usec = 500000;
+      ret = select (1, &readfds, NULL, NULL, &timeout);
+
+      gettimeofday (&after, NULL);
+      spent_usec = (after.tv_sec - before.tv_sec) * 1000000
+                   + after.tv_usec - before.tv_usec;
+
+      if (ret < 0)
+        {
+          perror ("select failed");
+          exit (1);
+        }
+      if ((ret == 0) != ! FD_ISSET (0, &readfds))
+        {
+          fprintf (stderr, "incorrect return value\n");
+          exit (1);
+        }
+      if (ret == 0)
+        {
+          if (spent_usec < 250000)
+            {
+              fprintf (stderr, "returned too early\n");
+              exit (1);
+            }
+          /* Timeout */
+          printf (".");
+          ASSERT (fflush (stdout) == 0);
+        }
+      else
+        {
+          char c;
+
+          printf ("Input available! Trying to read 1 byte...\n");
+          ASSERT (read (0, &c, 1) == 1);
+        }
+    }
+}
diff --git a/src/grep/gnulib-tests/test-select.c b/src/grep/gnulib-tests/test-select.c
new file mode 100644
index 0000000..a4ff8d1
--- /dev/null
+++ b/src/grep/gnulib-tests/test-select.c
@@ -0,0 +1,34 @@
+/* Test of select() substitute.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini, 2008.  */
+
+#include <config.h>
+
+#include <sys/select.h>
+
+#include "signature.h"
+
+SIGNATURE_CHECK (select, int, (int, fd_set *, fd_set *, fd_set *,
+                               struct timeval *));
+
+#include "test-select.h"
+
+int
+main (void)
+{
+  return test_function (select);
+}
diff --git a/src/grep/gnulib-tests/test-select.h b/src/grep/gnulib-tests/test-select.h
new file mode 100644
index 0000000..6348a49
--- /dev/null
+++ b/src/grep/gnulib-tests/test-select.h
@@ -0,0 +1,466 @@
+/* Test of select() substitute.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini, 2008.  */
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+
+#include "macros.h"
+
+#if defined _WIN32 && ! defined __CYGWIN__
+# define WINDOWS_NATIVE
+#endif
+
+#ifdef HAVE_SYS_WAIT_H
+# include <sys/wait.h>
+#endif
+
+#define TEST_PORT       12345
+
+
+typedef int (*select_fn) (int, fd_set *, fd_set *, fd_set *, struct timeval *);
+
+
+/* Minimal testing infrastructure.  */
+
+static int failures;
+
+static void
+failed (const char *reason)
+{
+  if (++failures > 1)
+    printf ("  ");
+  printf ("failed (%s)\n", reason);
+}
+
+static int
+test (void (*fn) (select_fn), select_fn my_select, const char *msg)
+{
+  failures = 0;
+  printf ("%s... ", msg);
+  fflush (stdout);
+  fn (my_select);
+
+  if (!failures)
+    printf ("passed\n");
+
+  return failures;
+}
+
+
+/* Funny socket code.  */
+
+static int
+open_server_socket (void)
+{
+  int s, x;
+  struct sockaddr_in ia;
+
+  s = socket (AF_INET, SOCK_STREAM, 0);
+
+  x = 1;
+  setsockopt (s, SOL_SOCKET, SO_REUSEPORT, &x, sizeof (x));
+
+  memset (&ia, 0, sizeof (ia));
+  ia.sin_family = AF_INET;
+  inet_pton (AF_INET, "127.0.0.1", &ia.sin_addr);
+  ia.sin_port = htons (TEST_PORT);
+  if (bind (s, (struct sockaddr *) &ia, sizeof (ia)) < 0)
+    {
+      perror ("bind");
+      exit (77);
+    }
+
+  if (listen (s, 1) < 0)
+    {
+      perror ("listen");
+      exit (77);
+    }
+
+  return s;
+}
+
+static int
+connect_to_socket (bool blocking)
+{
+  int s;
+  struct sockaddr_in ia;
+
+  s = socket (AF_INET, SOCK_STREAM, 0);
+
+  memset (&ia, 0, sizeof (ia));
+  ia.sin_family = AF_INET;
+  inet_pton (AF_INET, "127.0.0.1", &ia.sin_addr);
+  ia.sin_port = htons (TEST_PORT);
+
+  if (!blocking)
+    {
+#ifdef WINDOWS_NATIVE
+      unsigned long iMode = 1;
+      ioctl (s, FIONBIO, (char *) &iMode);
+
+#elif defined F_GETFL
+      int oldflags = fcntl (s, F_GETFL, NULL);
+
+      if (!(oldflags & O_NONBLOCK))
+        fcntl (s, F_SETFL, oldflags | O_NONBLOCK);
+#endif
+    }
+
+  if (connect (s, (struct sockaddr *) &ia, sizeof (ia)) < 0
+      && (blocking || errno != EINPROGRESS))
+    {
+      perror ("connect");
+      exit (77);
+    }
+
+  return s;
+}
+
+
+/* A slightly more convenient interface to select(2).
+   Waits until a specific event occurs on a file descriptor FD.
+   EV is a bit mask of events to look for:
+     SEL_IN - input can be polled without blocking,
+     SEL_OUT - output can be provided without blocking,
+     SEL_EXC - an exception occurred,
+   A maximum wait time is specified by TIMEOUT.
+   *TIMEOUT = { 0, 0 } means to return immediately,
+   TIMEOUT = NULL means to wait indefinitely.  */
+
+enum { SEL_IN = 1, SEL_OUT = 2, SEL_EXC = 4 };
+
+static int
+do_select (int fd, int ev, struct timeval *timeout, select_fn my_select)
+{
+  fd_set rfds, wfds, xfds;
+  int r, rev;
+
+  FD_ZERO (&rfds);
+  FD_ZERO (&wfds);
+  FD_ZERO (&xfds);
+  if (ev & SEL_IN)
+    FD_SET (fd, &rfds);
+  if (ev & SEL_OUT)
+    FD_SET (fd, &wfds);
+  if (ev & SEL_EXC)
+    FD_SET (fd, &xfds);
+  r = my_select (fd + 1, &rfds, &wfds, &xfds, timeout);
+  if (r < 0)
+    return r;
+
+  rev = 0;
+  if (FD_ISSET (fd, &rfds))
+    rev |= SEL_IN;
+  if (FD_ISSET (fd, &wfds))
+    rev |= SEL_OUT;
+  if (FD_ISSET (fd, &xfds))
+    rev |= SEL_EXC;
+  if (rev && r == 0)
+    failed ("select returned 0");
+  if (rev & ~ev)
+    failed ("select returned unrequested events");
+
+  return rev;
+}
+
+static int
+do_select_nowait (int fd, int ev, select_fn my_select)
+{
+  struct timeval tv0;
+  tv0.tv_sec = 0;
+  tv0.tv_usec = 0;
+  return do_select (fd, ev, &tv0, my_select);
+}
+
+static int
+do_select_wait (int fd, int ev, select_fn my_select)
+{
+  return do_select (fd, ev, NULL, my_select);
+}
+
+
+/* Test select(2) for TTYs.  */
+
+#ifdef INTERACTIVE
+static void
+test_tty (select_fn my_select)
+{
+  if (do_select_nowait (0, SEL_IN, my_select) != 0)
+    failed ("can read");
+  if (do_select_nowait (0, SEL_OUT, my_select) == 0)
+    failed ("cannot write");
+
+  if (do_select_wait (0, SEL_IN, my_select) == 0)
+    failed ("return with infinite timeout");
+
+  getchar ();
+  if (do_select_nowait (0, SEL_IN, my_select) != 0)
+    failed ("can read after getc");
+}
+#endif
+
+
+static int
+do_select_bad_nfd_nowait (int nfd, select_fn my_select)
+{
+  struct timeval tv0;
+  tv0.tv_sec = 0;
+  tv0.tv_usec = 0;
+  errno = 0;
+  return my_select (nfd, NULL, NULL, NULL, &tv0);
+}
+
+static void
+test_bad_nfd (select_fn my_select)
+{
+  if (do_select_bad_nfd_nowait (-1, my_select) != -1 || errno != EINVAL)
+    failed ("invalid errno after negative nfds");
+  /* Can't test FD_SETSIZE + 1 for EINVAL, since some systems allow
+     dynamically larger set size by redefining FD_SETSIZE anywhere up
+     to the actual maximum fd.  */
+#if 0
+  if (do_select_bad_nfd_nowait (FD_SETSIZE + 1, my_select) != -1
+      || errno != EINVAL)
+    failed ("invalid errno after bogus nfds");
+#endif
+}
+
+/* Test select(2) on invalid file descriptors.  */
+
+static int
+do_select_bad_fd (int fd, int ev, struct timeval *timeout, select_fn my_select)
+{
+  fd_set rfds, wfds, xfds;
+
+  FD_ZERO (&rfds);
+  FD_ZERO (&wfds);
+  FD_ZERO (&xfds);
+  if (ev & SEL_IN)
+    FD_SET (fd, &rfds);
+  if (ev & SEL_OUT)
+    FD_SET (fd, &wfds);
+  if (ev & SEL_EXC)
+    FD_SET (fd, &xfds);
+  errno = 0;
+  return my_select (fd + 1, &rfds, &wfds, &xfds, timeout);
+  /* In this case, when fd is invalid, on some platforms, the bit for fd
+     is left alone in the fd_set, whereas on other platforms it is cleared.
+     So, don't check the bit for fd here.  */
+}
+
+static int
+do_select_bad_fd_nowait (int fd, int ev, select_fn my_select)
+{
+  struct timeval tv0;
+  tv0.tv_sec = 0;
+  tv0.tv_usec = 0;
+  return do_select_bad_fd (fd, ev, &tv0, my_select);
+}
+
+static void
+test_bad_fd (select_fn my_select)
+{
+  /* This tests fails on OSF/1 and native Windows, even with fd = 16.  */
+#if !(defined __osf__ || defined WINDOWS_NATIVE)
+  int fd;
+
+  /* On Linux, Mac OS X, *BSD, values of fd like 99 or 399 are discarded
+     by the kernel early and therefore do *not* lead to EBADF, as required
+     by POSIX.  */
+# if defined __linux__ || (defined __APPLE__ && defined __MACH__) || (defined __FreeBSD__ || defined __DragonFly__) || defined __OpenBSD__ || defined __NetBSD__
+  fd = 14;
+# else
+  fd = 99;
+# endif
+  /* Even on the best POSIX compliant platforms, values of fd >= FD_SETSIZE
+     require an nfds argument that is > FD_SETSIZE and thus may lead to EINVAL,
+     not EBADF.  */
+  if (fd >= FD_SETSIZE)
+    fd = FD_SETSIZE - 1;
+  close (fd);
+
+  if (do_select_bad_fd_nowait (fd, SEL_IN, my_select) == 0 || errno != EBADF)
+    failed ("invalid fd among rfds");
+  if (do_select_bad_fd_nowait (fd, SEL_OUT, my_select) == 0 || errno != EBADF)
+    failed ("invalid fd among wfds");
+  if (do_select_bad_fd_nowait (fd, SEL_EXC, my_select) == 0 || errno != EBADF)
+    failed ("invalid fd among xfds");
+#endif
+}
+
+
+/* Test select(2) for unconnected nonblocking sockets.  */
+
+static void
+test_connect_first (select_fn my_select)
+{
+  int s = open_server_socket ();
+  struct sockaddr_in ia;
+  socklen_t addrlen;
+
+  int c1, c2;
+
+  if (do_select_nowait (s, SEL_IN | SEL_EXC, my_select) != 0)
+    failed ("can read, socket not connected");
+
+  c1 = connect_to_socket (false);
+
+  if (do_select_wait (s, SEL_IN | SEL_EXC, my_select) != SEL_IN)
+    failed ("expecting readability on passive socket");
+  if (do_select_nowait (s, SEL_IN | SEL_EXC, my_select) != SEL_IN)
+    failed ("expecting readability on passive socket");
+
+  addrlen = sizeof (ia);
+  c2 = accept (s, (struct sockaddr *) &ia, &addrlen);
+  ASSERT (close (s) == 0);
+  ASSERT (close (c1) == 0);
+  ASSERT (close (c2) == 0);
+}
+
+
+/* Test select(2) for unconnected blocking sockets.  */
+
+static void
+test_accept_first (select_fn my_select)
+{
+#ifndef WINDOWS_NATIVE
+  int s = open_server_socket ();
+  struct sockaddr_in ia;
+  socklen_t addrlen;
+  char buf[3];
+  int c, pid;
+
+  pid = fork ();
+  if (pid < 0)
+    return;
+
+  if (pid == 0)
+    {
+      addrlen = sizeof (ia);
+      c = accept (s, (struct sockaddr *) &ia, &addrlen);
+      ASSERT (close (s) == 0);
+      ASSERT (write (c, "foo", 3) == 3);
+      ASSERT (read (c, buf, 3) == 3);
+      shutdown (c, SHUT_RD);
+      ASSERT (close (c) == 0);
+      exit (0);
+    }
+  else
+    {
+      ASSERT (close (s) == 0);
+      c = connect_to_socket (true);
+      if (do_select_nowait (c, SEL_OUT, my_select) != SEL_OUT)
+        failed ("cannot write after blocking connect");
+      ASSERT (write (c, "foo", 3) == 3);
+      wait (&pid);
+      if (do_select_wait (c, SEL_IN, my_select) != SEL_IN)
+        failed ("cannot read data left in the socket by closed process");
+      ASSERT (read (c, buf, 3) == 3);
+      ASSERT (write (c, "foo", 3) == 3);
+      (void) close (c); /* may fail with errno = ECONNRESET */
+    }
+#endif
+}
+
+
+/* Common code for pipes and connected sockets.  */
+
+static void
+test_pair (int rd, int wd, select_fn my_select)
+{
+  char buf[3];
+  if (do_select_wait (wd, SEL_IN | SEL_OUT | SEL_EXC, my_select) != SEL_OUT)
+    failed ("expecting writability before writing");
+  if (do_select_nowait (wd, SEL_IN | SEL_OUT | SEL_EXC, my_select) != SEL_OUT)
+    failed ("expecting writability before writing");
+
+  ASSERT (write (wd, "foo", 3) == 3);
+  if (do_select_wait (rd, SEL_IN, my_select) != SEL_IN)
+    failed ("expecting readability after writing");
+  if (do_select_nowait (rd, SEL_IN, my_select) != SEL_IN)
+    failed ("expecting readability after writing");
+
+  ASSERT (read (rd, buf, 3) == 3);
+}
+
+
+/* Test select(2) on connected sockets.  */
+
+static void
+test_socket_pair (select_fn my_select)
+{
+  struct sockaddr_in ia;
+
+  socklen_t addrlen = sizeof (ia);
+  int s = open_server_socket ();
+  int c1 = connect_to_socket (false);
+  int c2 = accept (s, (struct sockaddr *) &ia, &addrlen);
+
+  ASSERT (close (s) == 0);
+
+  test_pair (c1, c2, my_select);
+  ASSERT (close (c1) == 0);
+  ASSERT (write (c2, "foo", 3) == 3);
+  (void) close (c2); /* may fail with errno = ECONNRESET */
+}
+
+
+/* Test select(2) on pipes.  */
+
+static void
+test_pipe (select_fn my_select)
+{
+  int fd[2];
+
+  ASSERT (pipe (fd) == 0);
+  test_pair (fd[0], fd[1], my_select);
+  ASSERT (close (fd[0]) == 0);
+  ASSERT (close (fd[1]) == 0);
+}
+
+
+/* Do them all.  */
+
+static int
+test_function (select_fn my_select)
+{
+  int result = 0;
+
+#ifdef INTERACTIVE
+  printf ("Please press Enter\n");
+  test (test_tty, "TTY", my_select);
+#endif
+
+  result += test (test_bad_nfd, my_select, "Invalid nfd test");
+  result += test (test_bad_fd, my_select, "Invalid fd test");
+  result += test (test_connect_first, my_select, "Unconnected socket test");
+  result += test (test_socket_pair, my_select, "Connected sockets test");
+  result += test (test_accept_first, my_select, "General socket test with fork");
+  result += test (test_pipe, my_select, "Pipe test");
+
+  return result;
+}
diff --git a/src/grep/gnulib-tests/test-setenv.c b/src/grep/gnulib-tests/test-setenv.c
new file mode 100644
index 0000000..034a7d2
--- /dev/null
+++ b/src/grep/gnulib-tests/test-setenv.c
@@ -0,0 +1,56 @@
+/* Tests of setenv.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (setenv, int, (char const *, char const *, int));
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Test overwriting.  */
+  ASSERT (setenv ("a", "==", -1) == 0);
+  ASSERT (setenv ("a", "2", 0) == 0);
+  ASSERT (strcmp (getenv ("a"), "==") == 0);
+
+  /* Required to fail with EINVAL.  */
+  errno = 0;
+  ASSERT (setenv ("", "", 1) == -1);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (setenv ("a=b", "", 0) == -1);
+  ASSERT (errno == EINVAL);
+#if 0
+  /* glibc and gnulib's implementation guarantee this, but POSIX no
+     longer requires it: http://austingroupbugs.net/view.php?id=185  */
+  errno = 0;
+  ASSERT (setenv (NULL, "", 0) == -1);
+  ASSERT (errno == EINVAL);
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-setlocale1.c b/src/grep/gnulib-tests/test-setlocale1.c
new file mode 100644
index 0000000..f7897c1
--- /dev/null
+++ b/src/grep/gnulib-tests/test-setlocale1.c
@@ -0,0 +1,64 @@
+/* Test of setting the current locale.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <locale.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (setlocale, char *, (int, const char *));
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  char *name1;
+  char *name2;
+
+  /* Try to set the locale by implicitly looking at the LC_ALL environment
+     variable.
+     configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  name1 = strdup (setlocale (LC_ALL, NULL));
+
+  /* Reset the locale.  */
+  if (setlocale (LC_ALL, "C") == NULL)
+    return 1;
+
+  /* Try to set the locale by explicitly looking at the LC_ALL environment
+     variable.
+     configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL)
+    return 1;
+
+  name2 = strdup (setlocale (LC_ALL, NULL));
+
+  ASSERT (name1);
+  ASSERT (name2);
+
+  /* Test that the two results are the same.  */
+  ASSERT (strcmp (name1, name2) == 0);
+  free (name1);
+  free (name2);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-setlocale1.sh b/src/grep/gnulib-tests/test-setlocale1.sh
new file mode 100755
index 0000000..53ad09f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-setlocale1.sh
@@ -0,0 +1,34 @@
+#!/bin/sh
+
+: ${LOCALE_FR=fr_FR}
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+: ${LOCALE_JA=ja_JP}
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+
+if test $LOCALE_FR = none && test $LOCALE_FR_UTF8 = none \
+   && test $LOCALE_JA = none && test $LOCALE_ZH_CN = none; then
+  if test -f /usr/bin/localedef; then
+    echo "Skipping test: no locale for testing is installed"
+  else
+    echo "Skipping test: no locale for testing is supported"
+  fi
+  exit 77
+fi
+
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR      ${CHECKER} ./test-setlocale1${EXEEXT} || exit 1
+fi
+
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 ${CHECKER} ./test-setlocale1${EXEEXT} || exit 1
+fi
+
+if test $LOCALE_JA != none; then
+  LC_ALL=$LOCALE_JA      ${CHECKER} ./test-setlocale1${EXEEXT} || exit 1
+fi
+
+if test $LOCALE_ZH_CN != none; then
+  LC_ALL=$LOCALE_ZH_CN   ${CHECKER} ./test-setlocale1${EXEEXT} || exit 1
+fi
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-setlocale2.c b/src/grep/gnulib-tests/test-setlocale2.c
new file mode 100644
index 0000000..ecb890b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-setlocale2.c
@@ -0,0 +1,55 @@
+/* Test of setting the current locale.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <locale.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main ()
+{
+  /* Try to set the locale by implicitly looking at the LC_ALL environment
+     variable.  */
+  if (setlocale (LC_ALL, "") != NULL)
+    /* It was successful.  Check whether LC_CTYPE is non-trivial.  */
+    if (strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+      {
+        fprintf (stderr, "setlocale did not fail for implicit %s\n",
+                 getenv ("LC_ALL"));
+        return 1;
+      }
+
+  /* Reset the locale.  */
+  if (setlocale (LC_ALL, "C") == NULL)
+    return 1;
+
+  /* Try to set the locale by explicitly looking at the LC_ALL environment
+     variable.  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) != NULL)
+    /* It was successful.  Check whether LC_CTYPE is non-trivial.  */
+    if (strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+      {
+        fprintf (stderr, "setlocale did not fail for explicit %s\n",
+                 getenv ("LC_ALL"));
+        return 1;
+      }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-setlocale2.sh b/src/grep/gnulib-tests/test-setlocale2.sh
new file mode 100755
index 0000000..79ea32f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-setlocale2.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+# Test locale names with likely unsupported encoding in Unix syntax.
+for name in ar_SA.ISO-8859-1 fr_FR.CP1251 zh_TW.GB18030 zh_CN.BIG5; do
+  env LC_ALL=$name ${CHECKER} ./test-setlocale2${EXEEXT} 1 || exit 1
+done
+
+# Test locale names with likely unsupported encoding in native Windows syntax.
+for name in "Arabic_Saudi Arabia.1252" "Arabic_Saudi Arabia.65001" \
+            French_France.65001 Japanese_Japan.65001 Turkish_Turkey.65001 \
+            Chinese_Taiwan.65001 Chinese_China.54936 Chinese_China.65001; do
+  # Here we use 'env' to set the LC_ALL environment variable, because on
+  # Solaris 11.0, the /bin/sh refuses to do it for Turkish_Turkey.65001.
+  env LC_ALL="$name" ${CHECKER} ./test-setlocale2${EXEEXT} 1 || exit 1
+done
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-setlocale_null-mt-all.c b/src/grep/gnulib-tests/test-setlocale_null-mt-all.c
new file mode 100644
index 0000000..f733036
--- /dev/null
+++ b/src/grep/gnulib-tests/test-setlocale_null-mt-all.c
@@ -0,0 +1,172 @@
+/* Multithread-safety test for setlocale_null_r (LC_ALL, ...).
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+/* Work around GCC bug 44511.  */
+#if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
+# pragma GCC diagnostic ignored "-Wreturn-type"
+#endif
+
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+
+/* Specification.  */
+#include <locale.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "glthread/thread.h"
+
+/* We want to use the system's setlocale() function here, not the gnulib
+   override.  */
+#undef setlocale
+
+
+/* Some common locale names.  */
+
+#if defined _WIN32 && !defined __CYGWIN__
+# define ENGLISH "English_United States"
+# define GERMAN  "German_Germany"
+# define FRENCH  "French_France"
+# define ENCODING ".1252"
+#else
+# define ENGLISH "en_US"
+# define GERMAN  "de_DE"
+# define FRENCH  "fr_FR"
+# if defined __sgi
+#  define ENCODING ".ISO8859-15"
+# elif defined __hpux
+#  define ENCODING ".utf8"
+# else
+#  define ENCODING ".UTF-8"
+# endif
+#endif
+
+static const char LOCALE1[] = ENGLISH ENCODING;
+static const char LOCALE2[] = GERMAN ENCODING;
+static const char LOCALE3[] = FRENCH ENCODING;
+
+static char *expected;
+
+static void *
+thread1_func (void *arg)
+{
+  for (;;)
+    {
+      char buf[SETLOCALE_NULL_ALL_MAX];
+
+      if (setlocale_null_r (LC_ALL, buf, sizeof (buf)))
+        abort ();
+      if (strcmp (expected, buf) != 0)
+        {
+          fprintf (stderr, "thread1 disturbed by thread2!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+}
+
+static void *
+thread2_func (void *arg)
+{
+  for (;;)
+    {
+      char buf[SETLOCALE_NULL_ALL_MAX];
+
+      setlocale_null_r (LC_NUMERIC, buf, sizeof (buf));
+      setlocale_null_r (LC_ALL, buf, sizeof (buf));
+    }
+
+  /*NOTREACHED*/
+}
+
+int
+main (int argc, char *argv[])
+{
+  if (setlocale (LC_ALL, LOCALE1) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE1 not recognized\n");
+      return 77;
+    }
+  if (setlocale (LC_NUMERIC, LOCALE2) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE2 not recognized\n");
+      return 77;
+    }
+  if (setlocale (LC_TIME, LOCALE3) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE3 not recognized\n");
+      return 77;
+    }
+
+  expected = strdup (setlocale (LC_ALL, NULL));
+
+  /* Create the two threads.  */
+  gl_thread_create (thread1_func, NULL);
+  gl_thread_create (thread2_func, NULL);
+
+  /* Let them run for 5 seconds.  */
+  {
+    struct timespec duration;
+    duration.tv_sec = 5;
+    duration.tv_nsec = 0;
+
+    nanosleep (&duration, NULL);
+  }
+
+  return 0;
+}
+
+#else
+
+/* No multithreading available.  */
+
+#include <stdio.h>
+
+int
+main ()
+{
+  fputs ("Skipping test: multithreading not enabled\n", stderr);
+  return 77;
+}
+
+#endif
+
+/* Without locking, the results of this test would be:
+glibc                OK
+musl libc            crash < 10 sec
+macOS                crash < 1 sec
+FreeBSD              crash < 1 sec
+NetBSD               crash < 2 sec
+OpenBSD              crash < 1 sec
+AIX                  crash < 2 sec
+HP-UX                OK
+IRIX                 OK
+Solaris 10           OK
+Solaris 11.0         OK
+Solaris 11.4         OK
+Solaris OpenIndiana  OK
+Haiku                crash < 1 sec
+Cygwin               crash < 1 sec
+mingw                OK
+MSVC                 OK (assuming compiler option /MD !)
+*/
diff --git a/src/grep/gnulib-tests/test-setlocale_null-mt-one.c b/src/grep/gnulib-tests/test-setlocale_null-mt-one.c
new file mode 100644
index 0000000..5f9b85b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-setlocale_null-mt-one.c
@@ -0,0 +1,172 @@
+/* Multithread-safety test for setlocale_null_r (LC_xxx, ...).
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+/* Work around GCC bug 44511.  */
+#if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
+# pragma GCC diagnostic ignored "-Wreturn-type"
+#endif
+
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+
+/* Specification.  */
+#include <locale.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "glthread/thread.h"
+
+/* We want to use the system's setlocale() function here, not the gnulib
+   override.  */
+#undef setlocale
+
+
+/* Some common locale names.  */
+
+#if defined _WIN32 && !defined __CYGWIN__
+# define ENGLISH "English_United States"
+# define GERMAN  "German_Germany"
+# define FRENCH  "French_France"
+# define ENCODING ".1252"
+#else
+# define ENGLISH "en_US"
+# define GERMAN  "de_DE"
+# define FRENCH  "fr_FR"
+# if defined __sgi
+#  define ENCODING ".ISO8859-15"
+# elif defined __hpux
+#  define ENCODING ".utf8"
+# else
+#  define ENCODING ".UTF-8"
+# endif
+#endif
+
+static const char LOCALE1[] = ENGLISH ENCODING;
+static const char LOCALE2[] = GERMAN ENCODING;
+static const char LOCALE3[] = FRENCH ENCODING;
+
+static char *expected;
+
+static void *
+thread1_func (void *arg)
+{
+  for (;;)
+    {
+      char buf[SETLOCALE_NULL_MAX];
+
+      if (setlocale_null_r (LC_NUMERIC, buf, sizeof (buf)))
+        abort ();
+      if (strcmp (expected, buf) != 0)
+        {
+          fprintf (stderr, "thread1 disturbed by thread2!\n"); fflush (stderr);
+          abort ();
+        }
+    }
+
+  /*NOTREACHED*/
+}
+
+static void *
+thread2_func (void *arg)
+{
+  for (;;)
+    {
+      char buf[SETLOCALE_NULL_MAX];
+
+      setlocale_null_r (LC_NUMERIC, buf, sizeof (buf));
+      setlocale_null_r (LC_TIME, buf, sizeof (buf));
+    }
+
+  /*NOTREACHED*/
+}
+
+int
+main (int argc, char *argv[])
+{
+  if (setlocale (LC_ALL, LOCALE1) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE1 not recognized\n");
+      return 77;
+    }
+  if (setlocale (LC_NUMERIC, LOCALE2) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE2 not recognized\n");
+      return 77;
+    }
+  if (setlocale (LC_TIME, LOCALE3) == NULL)
+    {
+      fprintf (stderr, "Skipping test: LOCALE3 not recognized\n");
+      return 77;
+    }
+
+  expected = strdup (setlocale (LC_NUMERIC, NULL));
+
+  /* Create the two threads.  */
+  gl_thread_create (thread1_func, NULL);
+  gl_thread_create (thread2_func, NULL);
+
+  /* Let them run for 2 seconds.  */
+  {
+    struct timespec duration;
+    duration.tv_sec = 2;
+    duration.tv_nsec = 0;
+
+    nanosleep (&duration, NULL);
+  }
+
+  return 0;
+}
+
+#else
+
+/* No multithreading available.  */
+
+#include <stdio.h>
+
+int
+main ()
+{
+  fputs ("Skipping test: multithreading not enabled\n", stderr);
+  return 77;
+}
+
+#endif
+
+/* Without locking, the results of this test would be:
+glibc                OK
+musl libc            OK
+macOS                OK
+FreeBSD              OK
+NetBSD               OK
+OpenBSD              crash < 1 sec
+AIX                  crash < 2 sec
+HP-UX                OK
+IRIX                 OK
+Solaris 10           OK
+Solaris 11.0         OK
+Solaris 11.4         OK
+Solaris OpenIndiana  OK
+Haiku                OK
+Cygwin               OK
+mingw                OK
+MSVC                 OK (assuming compiler option /MD !)
+*/
diff --git a/src/grep/gnulib-tests/test-setlocale_null.c b/src/grep/gnulib-tests/test-setlocale_null.c
new file mode 100644
index 0000000..ebe0d36
--- /dev/null
+++ b/src/grep/gnulib-tests/test-setlocale_null.c
@@ -0,0 +1,32 @@
+/* Test of setlocale_null_r function.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <locale.h>
+
+/* Check that SETLOCALE_NULL_ALL_MAX is a constant expression.  */
+static char buf[SETLOCALE_NULL_ALL_MAX];
+
+int
+main ()
+{
+  /* Check that setlocale_null_r() can be used with $(LIB_SETLOCALE_NULL).  */
+  return setlocale_null_r (LC_ALL, buf, sizeof (buf)) != 0;
+}
diff --git a/src/grep/gnulib-tests/test-setsockopt.c b/src/grep/gnulib-tests/test-setsockopt.c
new file mode 100644
index 0000000..09ae1aa
--- /dev/null
+++ b/src/grep/gnulib-tests/test-setsockopt.c
@@ -0,0 +1,55 @@
+/* Test setsockopt() function.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (setsockopt, int, (int, int, int, const void *, socklen_t));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "sockets.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  (void) gl_sockets_startup (SOCKETS_1_1);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    int value = 1;
+
+    errno = 0;
+    ASSERT (setsockopt (-1, SOL_SOCKET, SO_REUSEADDR, &value, sizeof (value))
+            == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    int value = 1;
+
+    close (99);
+    errno = 0;
+    ASSERT (setsockopt (99, SOL_SOCKET, SO_REUSEADDR, &value, sizeof (value))
+            == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-sigaction.c b/src/grep/gnulib-tests/test-sigaction.c
new file mode 100644
index 0000000..fc4a45c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sigaction.c
@@ -0,0 +1,122 @@
+/* Test of sigaction() function.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2008.  */
+
+#include <config.h>
+
+#include <signal.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (sigaction, int, (int, struct sigaction const *,
+                                  struct sigaction *));
+
+#include <stddef.h>
+
+#include "macros.h"
+
+#ifndef SA_NOCLDSTOP
+# define SA_NOCLDSTOP 0
+#endif
+#ifndef SA_ONSTACK
+# define SA_ONSTACK 0
+#endif
+#ifndef SA_RESETHAND
+# define SA_RESETHAND 0
+#endif
+#ifndef SA_RESTART
+# define SA_RESTART 0
+#endif
+#ifndef SA_SIGINFO
+# define SA_SIGINFO 0
+#endif
+#ifndef SA_NOCLDWAIT
+# define SA_NOCLDWAIT 0
+#endif
+
+/* Define a mask of flags required by POSIX.  Some implementations
+   provide other flags as extensions, such as SA_RESTORER, that we
+   must ignore in this test.  */
+#define MASK_SA_FLAGS (SA_NOCLDSTOP | SA_ONSTACK | SA_RESETHAND | SA_RESTART \
+                       | SA_SIGINFO | SA_NOCLDWAIT | SA_NODEFER)
+
+/* This test is unsafe in the presence of an asynchronous SIGABRT,
+   because we install a signal-handler that is intentionally not
+   async-safe.  Hopefully, this does not lead to too many reports of
+   false failures, since people don't generally use 'kill -s SIGABRT'
+   to end a runaway program.  */
+
+static void
+handler (int sig)
+{
+  static int entry_count;
+  struct sigaction sa;
+  ASSERT (sig == SIGABRT);
+  ASSERT (sigaction (SIGABRT, NULL, &sa) == 0);
+  ASSERT ((sa.sa_flags & SA_SIGINFO) == 0);
+  switch (entry_count++)
+    {
+    case 0:
+      ASSERT ((sa.sa_flags & SA_RESETHAND) == 0);
+      ASSERT (sa.sa_handler == handler);
+      break;
+    case 1:
+      /* This assertion fails on glibc-2.3.6 systems with LinuxThreads,
+         when this program is linked with -lpthread, due to the sigaction()
+         override in libpthread.so.  */
+#if !(defined __GLIBC__ || defined __UCLIBC__)
+      ASSERT (sa.sa_handler == SIG_DFL);
+#endif
+      break;
+    default:
+      ASSERT (0);
+    }
+}
+
+int
+main (void)
+{
+  struct sigaction sa;
+  struct sigaction old_sa;
+  sa.sa_handler = handler;
+
+  sa.sa_flags = 0;
+  ASSERT (sigemptyset (&sa.sa_mask) == 0);
+  ASSERT (sigaction (SIGABRT, &sa, NULL) == 0);
+  ASSERT (raise (SIGABRT) == 0);
+
+  sa.sa_flags = SA_RESETHAND | SA_NODEFER;
+  ASSERT (sigaction (SIGABRT, &sa, &old_sa) == 0);
+  ASSERT ((old_sa.sa_flags & MASK_SA_FLAGS) == 0);
+  ASSERT (old_sa.sa_handler == handler);
+  ASSERT (raise (SIGABRT) == 0);
+
+  sa.sa_handler = SIG_DFL;
+  ASSERT (sigaction (SIGABRT, &sa, &old_sa) == 0);
+  ASSERT ((old_sa.sa_flags & SA_SIGINFO) == 0);
+#if !(defined __GLIBC__ || defined __UCLIBC__) /* see above */
+  ASSERT (old_sa.sa_handler == SIG_DFL);
+#endif
+
+  sa.sa_handler = SIG_IGN;
+  ASSERT (sigaction (SIGABRT, &sa, NULL) == 0);
+  ASSERT (raise (SIGABRT) == 0);
+  ASSERT (sigaction (SIGABRT, NULL, &old_sa) == 0);
+  ASSERT (old_sa.sa_handler == SIG_IGN);
+  ASSERT (raise (SIGABRT) == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-signal-h.c b/src/grep/gnulib-tests/test-signal-h.c
new file mode 100644
index 0000000..b9d5176
--- /dev/null
+++ b/src/grep/gnulib-tests/test-signal-h.c
@@ -0,0 +1,129 @@
+/* Test of <signal.h> substitute.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <signal.h>
+
+/* Check for required types.  */
+struct
+{
+  size_t a;
+  uid_t b;
+  volatile sig_atomic_t c;
+  sigset_t d;
+  pid_t e;
+#if 0
+  /* Not guaranteed by gnulib.  */
+  pthread_t f;
+  struct timespec g;
+#endif
+} s;
+
+/* Check that NSIG is defined.  */
+int nsig = NSIG;
+
+int
+main (void)
+{
+  switch (0)
+    {
+      /* The following are guaranteed by C.  */
+    case 0:
+    case SIGABRT:
+    case SIGFPE:
+    case SIGILL:
+    case SIGINT:
+    case SIGSEGV:
+    case SIGTERM:
+      /* The following is guaranteed by gnulib.  */
+#if GNULIB_SIGPIPE || defined SIGPIPE
+    case SIGPIPE:
+#endif
+      /* Ensure no conflict with other standardized names.  */
+#ifdef SIGALRM
+    case SIGALRM:
+#endif
+      /* On Haiku, SIGBUS is mistakenly equal to SIGSEGV.  */
+#if defined SIGBUS && SIGBUS != SIGSEGV
+    case SIGBUS:
+#endif
+#ifdef SIGCHLD
+    case SIGCHLD:
+#endif
+#ifdef SIGCONT
+    case SIGCONT:
+#endif
+#ifdef SIGHUP
+    case SIGHUP:
+#endif
+#ifdef SIGKILL
+    case SIGKILL:
+#endif
+#ifdef SIGQUIT
+    case SIGQUIT:
+#endif
+#ifdef SIGSTOP
+    case SIGSTOP:
+#endif
+#ifdef SIGTSTP
+    case SIGTSTP:
+#endif
+#ifdef SIGTTIN
+    case SIGTTIN:
+#endif
+#ifdef SIGTTOU
+    case SIGTTOU:
+#endif
+#ifdef SIGUSR1
+    case SIGUSR1:
+#endif
+#ifdef SIGUSR2
+    case SIGUSR2:
+#endif
+#ifdef SIGSYS
+    case SIGSYS:
+#endif
+#ifdef SIGTRAP
+    case SIGTRAP:
+#endif
+#ifdef SIGURG
+    case SIGURG:
+#endif
+#ifdef SIGVTALRM
+    case SIGVTALRM:
+#endif
+#ifdef SIGXCPU
+    case SIGXCPU:
+#endif
+#ifdef SIGXFSZ
+    case SIGXFSZ:
+#endif
+      /* SIGRTMIN and SIGRTMAX need not be compile-time constants.  */
+#if 0
+# ifdef SIGRTMIN
+    case SIGRTMIN:
+# endif
+# ifdef SIGRTMAX
+    case SIGRTMAX:
+# endif
+#endif
+      ;
+    }
+  return s.a + s.b + s.c + s.e;
+}
diff --git a/src/grep/gnulib-tests/test-sigprocmask.c b/src/grep/gnulib-tests/test-sigprocmask.c
new file mode 100644
index 0000000..bf000d7
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sigprocmask.c
@@ -0,0 +1,102 @@
+/* Test of sigprocmask.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include <signal.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (sigprocmask, int, (int, const sigset_t *, sigset_t *));
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#if !(defined _WIN32 && !defined __CYGWIN__)
+
+static volatile int sigint_occurred;
+
+static void
+sigint_handler (int sig)
+{
+  sigint_occurred++;
+}
+
+int
+main (int argc, char *argv[])
+{
+  sigset_t set;
+  pid_t pid = getpid ();
+  char command[80];
+
+  if (sizeof (int) < sizeof pid && 0x7fffffff < pid)
+    {
+      fputs ("Skipping test: pid too large\n", stderr);
+      return 77;
+    }
+
+  signal (SIGINT, sigint_handler);
+
+  sigemptyset (&set);
+  sigaddset (&set, SIGINT);
+
+  /* Check error handling.  */
+  ASSERT (sigprocmask (1729, &set, NULL) == -1);
+  ASSERT (errno == EINVAL);
+
+  /* Block SIGINT.  */
+  ASSERT (sigprocmask (SIG_BLOCK, &set, NULL) == 0);
+
+  /* Request a SIGINT signal from outside.  */
+  sprintf (command, "sh -c 'sleep 1; kill -%d %d' &", SIGINT, (int) pid);
+  ASSERT (system (command) == 0);
+
+  /* Wait.  */
+  sleep (2);
+
+  /* The signal should not have arrived yet, because it is blocked.  */
+  ASSERT (sigint_occurred == 0);
+
+  /* Unblock SIGINT.  */
+  ASSERT (sigprocmask (SIG_UNBLOCK, &set, NULL) == 0);
+
+  /* The signal should have arrived now, because POSIX says
+       "If there are any pending unblocked signals after the call to
+        sigprocmask(), at least one of those signals shall be delivered
+        before the call to sigprocmask() returns."  */
+  ASSERT (sigint_occurred == 1);
+
+  return 0;
+}
+
+#else
+
+/* On native Windows, getpid() values and the arguments that are passed to
+   the (Cygwin?) 'kill' program are not necessarily related.  */
+
+int
+main ()
+{
+  fputs ("Skipping test: native Windows platform\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/test-sigsegv-catch-segv1.c b/src/grep/gnulib-tests/test-sigsegv-catch-segv1.c
new file mode 100644
index 0000000..4f6989e
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sigsegv-catch-segv1.c
@@ -0,0 +1,130 @@
+/* Test that the handler is called, with the right fault address.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "sigsegv.h"
+
+#include <stdint.h>
+#include <stdio.h>
+
+#if HAVE_SIGSEGV_RECOVERY
+
+# include "mmap-anon-util.h"
+# include <stdlib.h>
+
+# if SIGSEGV_FAULT_ADDRESS_ALIGNMENT > 1UL
+#  include <unistd.h>
+#  define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS (getpagesize () - 1)
+# else
+#  define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0
+# endif
+
+uintptr_t page;
+
+volatile int handler_called = 0;
+
+static int
+handler (void *fault_address, int serious)
+{
+  handler_called++;
+  if (handler_called > 10)
+    abort ();
+  if (fault_address
+      != (void *)((page + 0x678) & ~SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS))
+    abort ();
+  if (mprotect ((void *) page, 0x4000, PROT_READ_WRITE) == 0)
+    return 1;
+  return 0;
+}
+
+static void
+crasher (uintptr_t p)
+{
+  *(volatile int *) (p + 0x678) = 42;
+}
+
+int
+main ()
+{
+  int prot_unwritable;
+  void *p;
+
+  /* Preparations.  */
+# if !HAVE_MAP_ANONYMOUS
+  zero_fd = open ("/dev/zero", O_RDONLY, 0644);
+# endif
+
+# if defined __linux__ && defined __sparc__
+  /* On Linux 2.6.26/SPARC64, PROT_READ has the same effect as
+     PROT_READ | PROT_WRITE.  */
+  prot_unwritable = PROT_NONE;
+# else
+  prot_unwritable = PROT_READ;
+# endif
+
+  /* Setup some mmaped memory.  */
+  p = mmap_zeromap ((void *) 0x12340000, 0x4000);
+  if (p == (void *)(-1))
+    {
+      fprintf (stderr, "mmap_zeromap failed.\n");
+      exit (2);
+    }
+  page = (uintptr_t) p;
+
+  /* Make it read-only.  */
+  if (mprotect ((void *) page, 0x4000, prot_unwritable) < 0)
+    {
+      fprintf (stderr, "mprotect failed.\n");
+      exit (2);
+    }
+  /* Test whether it's possible to make it read-write after it was read-only.
+     This is not possible on Cygwin.  */
+  if (mprotect ((void *) page, 0x4000, PROT_READ_WRITE) < 0
+      || mprotect ((void *) page, 0x4000, prot_unwritable) < 0)
+    {
+      fprintf (stderr, "mprotect failed.\n");
+      exit (2);
+    }
+
+  /* Install the SIGSEGV handler.  */
+  sigsegv_install_handler (&handler);
+
+  /* The first write access should invoke the handler and then complete.  */
+  crasher (page);
+  /* The second write access should not invoke the handler.  */
+  crasher (page);
+
+  /* Check that the handler was called only once.  */
+  if (handler_called != 1)
+    exit (1);
+  /* Test passed!  */
+  printf ("Test passed.\n");
+  return 0;
+}
+
+#else
+
+int
+main ()
+{
+  return 77;
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/test-sigsegv-catch-segv2.c b/src/grep/gnulib-tests/test-sigsegv-catch-segv2.c
new file mode 100644
index 0000000..b2a4804
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sigsegv-catch-segv2.c
@@ -0,0 +1,153 @@
+/* Test that the handler can be exited multiple times.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "sigsegv.h"
+
+#include <stdint.h>
+#include <stdio.h>
+
+#if HAVE_SIGSEGV_RECOVERY
+
+# if defined _WIN32 && !defined __CYGWIN__
+  /* Windows doesn't have sigset_t.  */
+  typedef int sigset_t;
+#  define sigemptyset(set)
+#  define sigprocmask(how,set,oldset)
+# endif
+
+# include "mmap-anon-util.h"
+# include <stdlib.h> /* for abort, exit */
+# include <signal.h>
+# include <setjmp.h>
+
+# if SIGSEGV_FAULT_ADDRESS_ALIGNMENT > 1UL
+#  include <unistd.h>
+#  define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS (getpagesize () - 1)
+# else
+#  define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0
+# endif
+
+jmp_buf mainloop;
+sigset_t mainsigset;
+
+volatile int pass = 0;
+uintptr_t page;
+
+volatile int handler_called = 0;
+
+static void
+handler_continuation (void *arg1, void *arg2, void *arg3)
+{
+  longjmp (mainloop, pass);
+}
+
+int
+handler (void *fault_address, int serious)
+{
+  handler_called++;
+  if (handler_called > 10)
+    abort ();
+  if (fault_address
+      != (void *)((page + 0x678 + 8 * pass) & ~SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS))
+    abort ();
+  pass++;
+  printf ("Fault %d caught.\n", pass);
+  sigprocmask (SIG_SETMASK, &mainsigset, NULL);
+  return sigsegv_leave_handler (handler_continuation, NULL, NULL, NULL);
+}
+
+void
+crasher (uintptr_t p)
+{
+  *(volatile int *) (p + 0x678 + 8 * pass) = 42;
+}
+
+int
+main ()
+{
+  int prot_unwritable;
+  void *p;
+  sigset_t emptyset;
+
+  /* Preparations.  */
+# if !HAVE_MAP_ANONYMOUS
+  zero_fd = open ("/dev/zero", O_RDONLY, 0644);
+# endif
+
+# if defined __linux__ && defined __sparc__
+  /* On Linux 2.6.26/SPARC64, PROT_READ has the same effect as
+     PROT_READ | PROT_WRITE.  */
+  prot_unwritable = PROT_NONE;
+# else
+  prot_unwritable = PROT_READ;
+# endif
+
+  /* Setup some mmaped memory.  */
+  p = mmap_zeromap ((void *) 0x12340000, 0x4000);
+  if (p == (void *)(-1))
+    {
+      fprintf (stderr, "mmap_zeromap failed.\n");
+      exit (2);
+    }
+  page = (uintptr_t) p;
+
+  /* Make it read-only.  */
+  if (mprotect ((void *) page, 0x4000, prot_unwritable) < 0)
+    {
+      fprintf (stderr, "mprotect failed.\n");
+      exit (2);
+    }
+
+  /* Install the SIGSEGV handler.  */
+  if (sigsegv_install_handler (&handler) < 0)
+    exit (2);
+
+  /* Save the current signal mask.  */
+  sigemptyset (&emptyset);
+  sigprocmask (SIG_BLOCK, &emptyset, &mainsigset);
+
+  /* Provoke two SIGSEGVs in a row.  */
+  switch (setjmp (mainloop))
+    {
+    case 0: case 1:
+      printf ("Doing SIGSEGV pass %d.\n", pass + 1);
+      crasher (page);
+      printf ("no SIGSEGV?!\n"); exit (1);
+    case 2:
+      break;
+    default:
+      abort ();
+    }
+
+  /* Test passed!  */
+  printf ("Test passed.\n");
+  return 0;
+}
+
+#else
+
+int
+main ()
+{
+  return 77;
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/test-sigsegv-catch-stackoverflow1.c b/src/grep/gnulib-tests/test-sigsegv-catch-stackoverflow1.c
new file mode 100644
index 0000000..3c22997
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sigsegv-catch-stackoverflow1.c
@@ -0,0 +1,149 @@
+/* Test the stack overflow handler.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible and Eric Blake.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "sigsegv.h"
+
+#include <stdio.h>
+#include <limits.h>
+
+#if HAVE_STACK_OVERFLOW_RECOVERY
+
+# if defined _WIN32 && !defined __CYGWIN__
+  /* Windows doesn't have sigset_t.  */
+  typedef int sigset_t;
+#  define sigemptyset(set)
+#  define sigprocmask(how,set,oldset)
+# endif
+
+# include <stddef.h> /* needed for NULL on SunOS4 */
+# include <stdlib.h> /* for abort, exit */
+# include <signal.h>
+# include <setjmp.h>
+# if HAVE_SETRLIMIT
+#  include <sys/types.h>
+#  include <sys/time.h>
+#  include <sys/resource.h>
+# endif
+# include "altstack-util.h"
+
+static jmp_buf mainloop;
+static sigset_t mainsigset;
+
+static volatile int pass = 0;
+
+static volatile char *stack_lower_bound;
+static volatile char *stack_upper_bound;
+
+static void
+stackoverflow_handler_continuation (void *arg1, void *arg2, void *arg3)
+{
+  int arg = (int) (long) arg1;
+  longjmp (mainloop, arg);
+}
+
+static void
+stackoverflow_handler (int emergency, stackoverflow_context_t scp)
+{
+  char dummy;
+  volatile char *addr = &dummy;
+  if (!(addr >= stack_lower_bound && addr <= stack_upper_bound))
+    abort ();
+  pass++;
+  printf ("Stack overflow %d caught.\n", pass);
+  sigprocmask (SIG_SETMASK, &mainsigset, NULL);
+  sigsegv_leave_handler (stackoverflow_handler_continuation,
+                         (void *) (long) (emergency ? -1 : pass), NULL, NULL);
+}
+
+static volatile int *
+recurse_1 (int n, volatile int *p)
+{
+  if (n < INT_MAX)
+    *recurse_1 (n + 1, p) += n;
+  return p;
+}
+
+static int
+recurse (volatile int n)
+{
+  return *recurse_1 (n, &n);
+}
+
+int
+main ()
+{
+  sigset_t emptyset;
+
+# if HAVE_SETRLIMIT && defined RLIMIT_STACK
+  /* Before starting the endless recursion, try to be friendly to the user's
+     machine.  On some Linux 2.2.x systems, there is no stack limit for user
+     processes at all.  We don't want to kill such systems.  */
+  struct rlimit rl;
+  rl.rlim_cur = rl.rlim_max = 0x100000; /* 1 MB */
+  setrlimit (RLIMIT_STACK, &rl);
+# endif
+
+  /* Prepare the storage for the alternate stack.  */
+  prepare_alternate_stack ();
+
+  /* Install the stack overflow handler.  */
+  if (stackoverflow_install_handler (&stackoverflow_handler,
+                                     mystack, MYSTACK_SIZE)
+      < 0)
+    exit (2);
+  stack_lower_bound = mystack;
+  stack_upper_bound = mystack + MYSTACK_SIZE - 1;
+
+  /* Save the current signal mask.  */
+  sigemptyset (&emptyset);
+  sigprocmask (SIG_BLOCK, &emptyset, &mainsigset);
+
+  /* Provoke two stack overflows in a row.  */
+  switch (setjmp (mainloop))
+    {
+    case -1:
+      printf ("emergency exit\n"); exit (1);
+    case 0: case 1:
+      printf ("Starting recursion pass %d.\n", pass + 1);
+      recurse (0);
+      printf ("no endless recursion?!\n"); exit (1);
+    case 2:
+      break;
+    default:
+      abort ();
+    }
+
+  /* Validate that the alternate stack did not overflow.  */
+  check_alternate_stack_no_overflow ();
+
+  printf ("Test passed.\n");
+  exit (0);
+}
+
+#else
+
+int
+main ()
+{
+  return 77;
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/test-sigsegv-catch-stackoverflow2.c b/src/grep/gnulib-tests/test-sigsegv-catch-stackoverflow2.c
new file mode 100644
index 0000000..ea79b96
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sigsegv-catch-stackoverflow2.c
@@ -0,0 +1,211 @@
+/* Test that stack overflow and SIGSEGV are correctly distinguished.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible and Eric Blake.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "sigsegv.h"
+
+#include <stdint.h>
+#include <stdio.h>
+#include <limits.h>
+
+#if HAVE_STACK_OVERFLOW_RECOVERY && HAVE_SIGSEGV_RECOVERY
+
+# if defined _WIN32 && !defined __CYGWIN__
+  /* Windows doesn't have sigset_t.  */
+  typedef int sigset_t;
+#  define sigemptyset(set)
+#  define sigprocmask(how,set,oldset)
+# endif
+
+# include "mmap-anon-util.h"
+# include <stddef.h> /* needed for NULL on SunOS4 */
+# include <stdlib.h> /* for abort, exit */
+# include <signal.h>
+# include <setjmp.h>
+# if HAVE_SETRLIMIT
+#  include <sys/types.h>
+#  include <sys/time.h>
+#  include <sys/resource.h>
+# endif
+# include "altstack-util.h"
+
+static jmp_buf mainloop;
+static sigset_t mainsigset;
+
+static volatile int pass = 0;
+static uintptr_t page;
+static volatile int *null_pointer_to_volatile_int /* = NULL */;
+
+static void
+stackoverflow_handler_continuation (void *arg1, void *arg2, void *arg3)
+{
+  int arg = (int) (long) arg1;
+  longjmp (mainloop, arg);
+}
+
+static void
+stackoverflow_handler (int emergency, stackoverflow_context_t scp)
+{
+  pass++;
+  if (pass <= 2)
+    printf ("Stack overflow %d caught.\n", pass);
+  else
+    {
+      printf ("Segmentation violation misdetected as stack overflow.\n");
+      exit (1);
+    }
+  sigprocmask (SIG_SETMASK, &mainsigset, NULL);
+  sigsegv_leave_handler (stackoverflow_handler_continuation,
+                         (void *) (long) (emergency ? -1 : pass), NULL, NULL);
+}
+
+static int
+sigsegv_handler (void *address, int emergency)
+{
+  /* This test is necessary to distinguish stack overflow and SIGSEGV.  */
+  if (!emergency)
+    return 0;
+
+  pass++;
+  if (pass <= 2)
+    {
+      printf ("Stack overflow %d missed.\n", pass);
+      exit (1);
+    }
+  else
+    printf ("Segmentation violation correctly detected.\n");
+  sigprocmask (SIG_SETMASK, &mainsigset, NULL);
+  return sigsegv_leave_handler (stackoverflow_handler_continuation,
+                                (void *) (long) pass, NULL, NULL);
+}
+
+static volatile int *
+recurse_1 (int n, volatile int *p)
+{
+  if (n < INT_MAX)
+    *recurse_1 (n + 1, p) += n;
+  return p;
+}
+
+static int
+recurse (volatile int n)
+{
+  return *recurse_1 (n, &n);
+}
+
+int
+main ()
+{
+  int prot_unwritable;
+  void *p;
+  sigset_t emptyset;
+
+# if HAVE_SETRLIMIT && defined RLIMIT_STACK
+  /* Before starting the endless recursion, try to be friendly to the user's
+     machine.  On some Linux 2.2.x systems, there is no stack limit for user
+     processes at all.  We don't want to kill such systems.  */
+  struct rlimit rl;
+  rl.rlim_cur = rl.rlim_max = 0x100000; /* 1 MB */
+  setrlimit (RLIMIT_STACK, &rl);
+# endif
+
+  /* Prepare the storage for the alternate stack.  */
+  prepare_alternate_stack ();
+
+  /* Install the stack overflow handler.  */
+  if (stackoverflow_install_handler (&stackoverflow_handler,
+                                     mystack, MYSTACK_SIZE)
+      < 0)
+    exit (2);
+
+  /* Preparations.  */
+# if !HAVE_MAP_ANONYMOUS
+  zero_fd = open ("/dev/zero", O_RDONLY, 0644);
+# endif
+
+# if defined __linux__ && defined __sparc__
+  /* On Linux 2.6.26/SPARC64, PROT_READ has the same effect as
+     PROT_READ | PROT_WRITE.  */
+  prot_unwritable = PROT_NONE;
+# else
+  prot_unwritable = PROT_READ;
+# endif
+
+  /* Setup some mmaped memory.  */
+  p = mmap_zeromap ((void *) 0x12340000, 0x4000);
+  if (p == (void *)(-1))
+    {
+      fprintf (stderr, "mmap_zeromap failed.\n");
+      exit (2);
+    }
+  page = (uintptr_t) p;
+
+  /* Make it read-only.  */
+  if (mprotect ((void *) page, 0x4000, prot_unwritable) < 0)
+    {
+      fprintf (stderr, "mprotect failed.\n");
+      exit (2);
+    }
+
+  /* Install the SIGSEGV handler.  */
+  if (sigsegv_install_handler (&sigsegv_handler) < 0)
+    exit (2);
+
+  /* Save the current signal mask.  */
+  sigemptyset (&emptyset);
+  sigprocmask (SIG_BLOCK, &emptyset, &mainsigset);
+
+  /* Provoke two stack overflows in a row.  */
+  switch (setjmp (mainloop))
+    {
+    case -1:
+      printf ("emergency exit\n"); exit (1);
+    case 0: case 1:
+      printf ("Starting recursion pass %d.\n", pass + 1);
+      recurse (0);
+      printf ("no endless recursion?!\n"); exit (1);
+    case 2:
+      *(volatile int *) (page + 0x678) = 42;
+      break;
+    case 3:
+      *null_pointer_to_volatile_int = 42;
+      break;
+    case 4:
+      break;
+    default:
+      abort ();
+    }
+
+  /* Validate that the alternate stack did not overflow.  */
+  check_alternate_stack_no_overflow ();
+
+  printf ("Test passed.\n");
+  exit (0);
+}
+
+#else
+
+int
+main ()
+{
+  return 77;
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/test-sleep.c b/src/grep/gnulib-tests/test-sleep.c
new file mode 100644
index 0000000..be9ee83
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sleep.c
@@ -0,0 +1,58 @@
+/* Test of sleep() function.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (sleep, unsigned int, (unsigned int));
+
+#include <signal.h>
+
+#include "macros.h"
+
+#if HAVE_DECL_ALARM
+static void
+handle_alarm (int sig)
+{
+  if (sig != SIGALRM)
+    _exit (1);
+}
+#endif
+
+int
+main (void)
+{
+  ASSERT (sleep (1) <= 1);
+
+  ASSERT (sleep (0) == 0);
+
+#if HAVE_DECL_ALARM
+  {
+    const unsigned int pentecost = 50 * 24 * 60 * 60; /* 50 days.  */
+    unsigned int remaining;
+    signal (SIGALRM, handle_alarm);
+    alarm (1);
+    remaining = sleep (pentecost);
+    ASSERT (pentecost - 10 < remaining && remaining <= pentecost);
+  }
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-snprintf.c b/src/grep/gnulib-tests/test-snprintf.c
new file mode 100644
index 0000000..ea6de1c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-snprintf.c
@@ -0,0 +1,72 @@
+/* Test of snprintf() function.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (snprintf, int, (char *, size_t, char const *, ...));
+
+#include <string.h>
+
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+  char buf[8];
+  int size;
+  int retval;
+
+  retval = snprintf (NULL, 0, "%d", 12345);
+  ASSERT (retval == 5);
+
+  for (size = 0; size <= 8; size++)
+    {
+      memcpy (buf, "DEADBEEF", 8);
+      retval = snprintf (buf, size, "%d", 12345);
+      ASSERT (retval == 5);
+      if (size < 6)
+        {
+          if (size > 0)
+            {
+              ASSERT (memcmp (buf, "12345", size - 1) == 0);
+              ASSERT (buf[size - 1] == '\0' || buf[size - 1] == '0' + size);
+            }
+#if !CHECK_SNPRINTF_POSIX
+          if (size > 0)
+#endif
+            ASSERT (memcmp (buf + size, &"DEADBEEF"[size], 8 - size) == 0);
+        }
+      else
+        {
+          ASSERT (memcmp (buf, "12345\0EF", 8) == 0);
+        }
+    }
+
+  /* Test the support of the POSIX/XSI format strings with positions.  */
+  {
+    char result[100];
+    retval = snprintf (result, sizeof (result), "%2$d %1$d", 33, 55);
+    ASSERT (strcmp (result, "55 33") == 0);
+    ASSERT (retval == strlen (result));
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-sockets.c b/src/grep/gnulib-tests/test-sockets.c
new file mode 100644
index 0000000..8fd603c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sockets.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2008-2021 Free Software Foundation, Inc.
+ * Written by Simon Josefsson.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "sockets.h"
+
+int
+main (void)
+{
+  int err;
+
+  err = gl_sockets_startup (SOCKETS_1_1);
+  if (err != 0)
+    {
+      printf ("wsastartup failed %d\n", err);
+      return 1;
+    }
+
+  err = gl_sockets_cleanup ();
+  if (err != 0)
+    {
+      printf ("wsacleanup failed %d\n", err);
+      return 1;
+    }
+
+  (void) gl_fd_to_handle (0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-stat-time.c b/src/grep/gnulib-tests/test-stat-time.c
new file mode 100644
index 0000000..cd0f3c3
--- /dev/null
+++ b/src/grep/gnulib-tests/test-stat-time.c
@@ -0,0 +1,248 @@
+/* Test of <stat-time.h>.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by James Youngman <jay@gnu.org>, 2007.  */
+
+#include <config.h>
+
+#include "stat-time.h"
+
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <time.h>
+
+#include "macros.h"
+
+#define BASE "test-stat-time.t"
+#include "nap.h"
+
+enum { NFILES = 4 };
+
+static char filename_stamp1[50];
+static char filename_testfile[50];
+static char filename_stamp2[50];
+static char filename_stamp3[50];
+
+/* Use file names that are different at each run.
+   This is necessary for test_birthtime() to pass on native Windows:
+   On this platform, the file system apparently remembers the creation time
+   of a file even after it is removed and created anew.  See
+   "Windows NT Contains File System Tunneling Capabilities"
+   <https://support.microsoft.com/en-us/help/172190/>  */
+static void
+initialize_filenames (void)
+{
+  long t = (long) time (NULL);
+  sprintf (filename_stamp1,   "t-stt-%ld-stamp1", t);
+  sprintf (filename_testfile, "t-stt-%ld-testfile", t);
+  sprintf (filename_stamp2,   "t-stt-%ld-stamp2", t);
+  sprintf (filename_stamp3,   "t-stt-%ld-stamp3", t);
+}
+
+static int
+force_unlink (const char *filename)
+{
+  /* This chmod is necessary on mingw, where unlink() of a read-only file
+     fails with EPERM.  */
+  chmod (filename, 0600);
+  return unlink (filename);
+}
+
+static void
+cleanup (int sig)
+{
+  /* Remove temporary files.  */
+  force_unlink (filename_stamp1);
+  force_unlink (filename_testfile);
+  force_unlink (filename_stamp2);
+  force_unlink (filename_stamp3);
+
+  if (sig != 0)
+    _exit (1);
+}
+
+static int
+open_file (const char *filename, int flags)
+{
+  int fd = open (filename, flags | O_WRONLY, 0500);
+  if (fd >= 0)
+    {
+      close (fd);
+      return 1;
+    }
+  else
+    {
+      return 0;
+    }
+}
+
+static void
+create_file (const char *filename)
+{
+  ASSERT (open_file (filename, O_CREAT | O_EXCL));
+}
+
+static void
+do_stat (const char *filename, struct stat *p)
+{
+  ASSERT (stat (filename, p) == 0);
+}
+
+static void
+prepare_test (struct stat *statinfo, struct timespec *modtimes)
+{
+  int i;
+
+  create_file (filename_stamp1);
+  nap ();
+  create_file (filename_testfile);
+  nap ();
+  create_file (filename_stamp2);
+  nap ();
+  ASSERT (chmod (filename_testfile, 0400) == 0);
+  nap ();
+  create_file (filename_stamp3);
+
+  do_stat (filename_stamp1,   &statinfo[0]);
+  do_stat (filename_testfile, &statinfo[1]);
+  do_stat (filename_stamp2,   &statinfo[2]);
+  do_stat (filename_stamp3,   &statinfo[3]);
+
+  /* Now use our access functions. */
+  for (i = 0; i < NFILES; ++i)
+    {
+      modtimes[i] = get_stat_mtime (&statinfo[i]);
+    }
+}
+
+static void
+test_mtime (const struct stat *statinfo, struct timespec *modtimes)
+{
+  int i;
+
+  /* Use the struct stat fields directly. */
+  /* mtime(stamp1) < mtime(stamp2) */
+  ASSERT (statinfo[0].st_mtime < statinfo[2].st_mtime
+          || (statinfo[0].st_mtime == statinfo[2].st_mtime
+              && (get_stat_mtime_ns (&statinfo[0])
+                  < get_stat_mtime_ns (&statinfo[2]))));
+  /* mtime(stamp2) < mtime(stamp3) */
+  ASSERT (statinfo[2].st_mtime < statinfo[3].st_mtime
+          || (statinfo[2].st_mtime == statinfo[3].st_mtime
+              && (get_stat_mtime_ns (&statinfo[2])
+                  < get_stat_mtime_ns (&statinfo[3]))));
+
+  /* Now check the result of the access functions. */
+  /* mtime(stamp1) < mtime(stamp2) */
+  ASSERT (modtimes[0].tv_sec < modtimes[2].tv_sec
+          || (modtimes[0].tv_sec == modtimes[2].tv_sec
+              && modtimes[0].tv_nsec < modtimes[2].tv_nsec));
+  /* mtime(stamp2) < mtime(stamp3) */
+  ASSERT (modtimes[2].tv_sec < modtimes[3].tv_sec
+          || (modtimes[2].tv_sec == modtimes[3].tv_sec
+              && modtimes[2].tv_nsec < modtimes[3].tv_nsec));
+
+  /* verify equivalence */
+  for (i = 0; i < NFILES; ++i)
+    {
+      struct timespec ts;
+      ts = get_stat_mtime (&statinfo[i]);
+      ASSERT (ts.tv_sec == statinfo[i].st_mtime);
+    }
+}
+
+#if defined _WIN32 && !defined __CYGWIN__
+/* Skip the ctime tests on native Windows platforms, because their
+   st_ctime is either the same as st_mtime (plus or minus an offset)
+   or set to the file _creation_ time, and is not influenced by rename
+   or chmod.  */
+# define test_ctime(ignored) ((void) 0)
+#else
+static void
+test_ctime (const struct stat *statinfo)
+{
+  /* On some buggy NFS clients, mtime and ctime are disproportionately
+     skewed from one another.  Skip this test in that case.  */
+  if (statinfo[0].st_mtime != statinfo[0].st_ctime)
+    return;
+
+  /* mtime(stamp2) < ctime(testfile) */
+  ASSERT (statinfo[2].st_mtime < statinfo[1].st_ctime
+          || (statinfo[2].st_mtime == statinfo[1].st_ctime
+              && (get_stat_mtime_ns (&statinfo[2])
+                  < get_stat_ctime_ns (&statinfo[1]))));
+}
+#endif
+
+static void
+test_birthtime (const struct stat *statinfo,
+                const struct timespec *modtimes,
+                struct timespec *birthtimes)
+{
+  int i;
+
+  /* Collect the birth times.  */
+  for (i = 0; i < NFILES; ++i)
+    {
+      birthtimes[i] = get_stat_birthtime (&statinfo[i]);
+      if (birthtimes[i].tv_nsec < 0)
+        return;
+    }
+
+  /* mtime(stamp1) < birthtime(testfile) */
+  ASSERT (modtimes[0].tv_sec < birthtimes[1].tv_sec
+          || (modtimes[0].tv_sec == birthtimes[1].tv_sec
+              && modtimes[0].tv_nsec < birthtimes[1].tv_nsec));
+  /* birthtime(testfile) < mtime(stamp2) */
+  ASSERT (birthtimes[1].tv_sec < modtimes[2].tv_sec
+          || (birthtimes[1].tv_sec == modtimes[2].tv_sec
+              && birthtimes[1].tv_nsec < modtimes[2].tv_nsec));
+}
+
+int
+main (void)
+{
+  struct stat statinfo[NFILES];
+  struct timespec modtimes[NFILES];
+  struct timespec birthtimes[NFILES];
+
+  initialize_filenames ();
+
+#ifdef SIGHUP
+  signal (SIGHUP, cleanup);
+#endif
+#ifdef SIGINT
+  signal (SIGINT, cleanup);
+#endif
+#ifdef SIGQUIT
+  signal (SIGQUIT, cleanup);
+#endif
+#ifdef SIGTERM
+  signal (SIGTERM, cleanup);
+#endif
+
+  cleanup (0);
+  prepare_test (statinfo, modtimes);
+  test_mtime (statinfo, modtimes);
+  test_ctime (statinfo);
+  test_birthtime (statinfo, modtimes, birthtimes);
+
+  cleanup (0);
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-stat.c b/src/grep/gnulib-tests/test-stat.c
new file mode 100644
index 0000000..6f0a995
--- /dev/null
+++ b/src/grep/gnulib-tests/test-stat.c
@@ -0,0 +1,56 @@
+/* Tests of stat.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+/* Caution: stat may be a function-like macro.  Although this
+   signature check must pass, it may be the signature of the real (and
+   broken) stat rather than rpl_stat.  Most code should not use the
+   address of stat.  */
+#include "signature.h"
+SIGNATURE_CHECK (stat, int, (char const *, struct stat *));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "same-inode.h"
+#include "macros.h"
+
+#define BASE "test-stat.t"
+
+#include "test-stat.h"
+
+/* Wrapper around stat, which works even if stat is a function-like
+   macro, where test_stat_func(stat) would do the wrong thing.  */
+static int
+do_stat (char const *name, struct stat *st)
+{
+  return stat (name, st);
+}
+
+int
+main (void)
+{
+  return test_stat_func (do_stat, true);
+}
diff --git a/src/grep/gnulib-tests/test-stat.h b/src/grep/gnulib-tests/test-stat.h
new file mode 100644
index 0000000..e728ca2
--- /dev/null
+++ b/src/grep/gnulib-tests/test-stat.h
@@ -0,0 +1,107 @@
+/* Tests of stat.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+/* This file is designed to test both stat(n,buf) and
+   fstatat(AT_FDCWD,n,buf,0).  FUNC is the function to test.  Assumes
+   that BASE and ASSERT are already defined, and that appropriate
+   headers are already included.  If PRINT, warn before skipping
+   symlink tests with status 77.  */
+
+static int
+test_stat_func (int (*func) (char const *, struct stat *), bool print)
+{
+  struct stat st1;
+  struct stat st2;
+  char *cwd = getcwd (NULL, 0);
+
+  ASSERT (cwd);
+  ASSERT (func (".", &st1) == 0);
+  ASSERT (func ("./", &st2) == 0);
+#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
+  ASSERT (SAME_INODE (st1, st2));
+#endif
+  ASSERT (func (cwd, &st2) == 0);
+#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
+  ASSERT (SAME_INODE (st1, st2));
+#endif
+  ASSERT (func ("/", &st1) == 0);
+  ASSERT (func ("///", &st2) == 0);
+#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
+  ASSERT (SAME_INODE (st1, st2));
+#endif
+
+  errno = 0;
+  ASSERT (func ("", &st1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("nosuch", &st1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("nosuch/", &st1) == -1);
+  ASSERT (errno == ENOENT);
+
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  ASSERT (func (BASE "file", &st1) == 0);
+  errno = 0;
+  ASSERT (func (BASE "file/", &st1) == -1);
+  ASSERT (errno == ENOTDIR);
+
+  /* Now for some symlink tests, where supported.  We set up:
+     link1 -> directory
+     link2 -> file
+     link3 -> dangling
+     link4 -> loop
+     then test behavior with trailing slash.
+  */
+  if (symlink (".", BASE "link1") != 0)
+    {
+      ASSERT (unlink (BASE "file") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  ASSERT (symlink (BASE "file", BASE "link2") == 0);
+  ASSERT (symlink (BASE "nosuch", BASE "link3") == 0);
+  ASSERT (symlink (BASE "link4", BASE "link4") == 0);
+
+  ASSERT (func (BASE "link1/", &st1) == 0);
+  ASSERT (S_ISDIR (st1.st_mode));
+
+  errno = 0;
+  ASSERT (func (BASE "link2/", &st1) == -1);
+  ASSERT (errno == ENOTDIR);
+
+  errno = 0;
+  ASSERT (func (BASE "link3/", &st1) == -1);
+  ASSERT (errno == ENOENT);
+
+  errno = 0;
+  ASSERT (func (BASE "link4/", &st1) == -1);
+  ASSERT (errno == ELOOP);
+
+  /* Cleanup.  */
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (unlink (BASE "link1") == 0);
+  ASSERT (unlink (BASE "link2") == 0);
+  ASSERT (unlink (BASE "link3") == 0);
+  ASSERT (unlink (BASE "link4") == 0);
+  free (cwd);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-stdalign.c b/src/grep/gnulib-tests/test-stdalign.c
new file mode 100644
index 0000000..38812b6
--- /dev/null
+++ b/src/grep/gnulib-tests/test-stdalign.c
@@ -0,0 +1,126 @@
+/* Test of <stdalign.h>.
+   Copyright 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert, inspired by Bruno Haible's test-alignof.c.  */
+
+#include <config.h>
+
+#include <stdalign.h>
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "verify.h"
+
+#include "macros.h"
+
+typedef long double longdouble;
+typedef struct { char a[1]; } struct1;
+typedef struct { char a[2]; } struct2;
+typedef struct { char a[3]; } struct3;
+typedef struct { char a[4]; } struct4;
+
+verify (__alignof_is_defined == 1);
+#ifndef alignof
+# error "alignof is not a macro"
+#endif
+
+#if __alignas_is_defined
+verify (__alignas_is_defined == 1);
+# ifndef alignas
+#  error "alignas is not a macro"
+# endif
+/* mingw can go up only to 8.  8 is all that GNU Emacs needs, so let's
+   limit the test to 8 for now.  */
+# define TEST_ALIGNMENT 8
+#else
+# define _Alignas(alignment)
+# define alignas(alignment)
+# define TEST_ALIGNMENT 1
+#endif
+
+#define CHECK_STATIC(type) \
+  typedef struct { char slot1; type slot2; } type##_helper; \
+  verify (alignof (type) == offsetof (type##_helper, slot2)); \
+  verify (_Alignof (type) == alignof (type)); \
+  const int type##_alignment = alignof (type); \
+  type alignas (TEST_ALIGNMENT) static_##type##_alignas; \
+  type _Alignas (TEST_ALIGNMENT) static_##type##_Alignas
+
+#define CHECK_ALIGNED(var) ASSERT ((uintptr_t) &(var) % TEST_ALIGNMENT == 0)
+
+CHECK_STATIC (char);
+CHECK_STATIC (short);
+CHECK_STATIC (int);
+CHECK_STATIC (long);
+#ifdef INT64_MAX
+CHECK_STATIC (int64_t);
+#endif
+CHECK_STATIC (float);
+CHECK_STATIC (double);
+/* CHECK_STATIC (longdouble); */
+CHECK_STATIC (struct1);
+CHECK_STATIC (struct2);
+CHECK_STATIC (struct3);
+CHECK_STATIC (struct4);
+
+int
+main ()
+{
+#if defined __SUNPRO_C && __SUNPRO_C < 0x5150
+  /* Avoid a test failure due to Sun Studio Developer Bug Report #2125432.  */
+  fputs ("Skipping test: known Sun C compiler bug\n", stderr);
+  return 77;
+#elif defined __HP_cc && __ia64
+  /* Avoid a test failure due to HP-UX Itanium cc bug; see:
+     https://lists.gnu.org/r/bug-gnulib/2017-03/msg00078.html  */
+  fputs ("Skipping test: known HP-UX Itanium cc compiler bug\n", stderr);
+  return 77;
+#elif defined __clang__ && defined __ibmxl__
+  /* Avoid a test failure with IBM xlc 16.1.  It ignores alignas (8),
+     _Alignas (8), and __attribute__ ((__aligned__ (8))).  */
+  fputs ("Skipping test: known AIX XL C compiler deficiency\n", stderr);
+  return 77;
+#else
+  CHECK_ALIGNED (static_char_alignas);
+  CHECK_ALIGNED (static_char_Alignas);
+  CHECK_ALIGNED (static_short_alignas);
+  CHECK_ALIGNED (static_short_Alignas);
+  CHECK_ALIGNED (static_int_alignas);
+  CHECK_ALIGNED (static_int_Alignas);
+  CHECK_ALIGNED (static_long_alignas);
+  CHECK_ALIGNED (static_long_Alignas);
+# ifdef INT64_MAX
+  CHECK_ALIGNED (static_int64_t_alignas);
+  CHECK_ALIGNED (static_int64_t_Alignas);
+# endif
+  CHECK_ALIGNED (static_float_alignas);
+  CHECK_ALIGNED (static_float_Alignas);
+  CHECK_ALIGNED (static_double_alignas);
+  CHECK_ALIGNED (static_double_Alignas);
+  /* CHECK_ALIGNED (static_longdouble_alignas); */
+  /* CHECK_ALIGNED (static_longdouble_Alignas); */
+  CHECK_ALIGNED (static_struct1_alignas);
+  CHECK_ALIGNED (static_struct1_Alignas);
+  CHECK_ALIGNED (static_struct2_alignas);
+  CHECK_ALIGNED (static_struct2_Alignas);
+  CHECK_ALIGNED (static_struct3_alignas);
+  CHECK_ALIGNED (static_struct3_Alignas);
+  CHECK_ALIGNED (static_struct4_alignas);
+  CHECK_ALIGNED (static_struct4_Alignas);
+  return 0;
+#endif
+}
diff --git a/src/grep/gnulib-tests/test-stdbool.c b/src/grep/gnulib-tests/test-stdbool.c
new file mode 100644
index 0000000..60e5242
--- /dev/null
+++ b/src/grep/gnulib-tests/test-stdbool.c
@@ -0,0 +1,122 @@
+/* Test of <stdbool.h> substitute.
+   Copyright (C) 2002-2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+/* Define ADDRESS_CHECK_OKAY if it is OK to assign an address to a 'bool'
+   and this does not generate a warning (because we want this test to succeed
+   even when using gcc's -Werror).  */
+#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) \
+    || (__clang_major__ >= 4)
+/* We can silence the warning.  */
+# pragma GCC diagnostic ignored "-Waddress"
+# define ADDRESS_CHECK_OKAY
+#elif defined __GNUC__ || defined __clang__
+/* There may be a warning.  */
+#else
+/* Ignore warnings from other compilers.  */
+# define ADDRESS_CHECK_OKAY
+#endif
+
+#include <config.h>
+
+#include <stdbool.h>
+
+#ifndef bool
+ "error: bool is not defined"
+#endif
+#ifndef false
+ "error: false is not defined"
+#endif
+#if false
+ "error: false is not 0"
+#endif
+#ifndef true
+ "error: true is not defined"
+#endif
+#if true != 1
+ "error: true is not 1"
+#endif
+#ifndef __bool_true_false_are_defined
+ "error: __bool_true_false_are_defined is not defined"
+#endif
+
+/* Several tests cannot be guaranteed with gnulib's <stdbool.h>, at
+   least, not for all compilers and compiler options.  */
+#if HAVE_STDBOOL_H || 3 <= __GNUC__ || 4 <= __clang_major__
+struct s { _Bool s: 1; _Bool t; } s;
+#endif
+
+char a[true == 1 ? 1 : -1];
+char b[false == 0 ? 1 : -1];
+char c[__bool_true_false_are_defined == 1 ? 1 : -1];
+#if HAVE_STDBOOL_H || 3 <= __GNUC__ || 4 <= __clang_major__ /* See above.  */
+char d[(bool) 0.5 == true ? 1 : -1];
+# ifdef ADDRESS_CHECK_OKAY /* Avoid gcc warning.  */
+/* C99 may plausibly be interpreted as not requiring support for a cast from
+   a variable's address to bool in a static initializer.  So treat it like a
+   GCC extension.  */
+#  if defined __GNUC__ || defined __clang__
+bool e = &s;
+#  endif
+# endif
+char f[(_Bool) 0.0 == false ? 1 : -1];
+#endif
+char g[true];
+char h[sizeof (_Bool)];
+#if HAVE_STDBOOL_H || 3 <= __GNUC__ || 4 <= __clang_major__ /* See above.  */
+char i[sizeof s.t];
+#endif
+enum { j = false, k = true, l = false * true, m = true * 256 };
+_Bool n[m];
+char o[sizeof n == m * sizeof n[0] ? 1 : -1];
+char p[-1 - (_Bool) 0 < 0 && -1 - (bool) 0 < 0 ? 1 : -1];
+/* Catch a bug in an HP-UX C compiler.  See
+   https://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
+   https://lists.gnu.org/r/bug-coreutils/2005-11/msg00161.html
+ */
+_Bool q = true;
+_Bool *pq = &q;
+
+int
+main ()
+{
+  int error = 0;
+
+#if HAVE_STDBOOL_H || 3 <= __GNUC_ || 4 <= __clang_major___ /* See above.  */
+# ifdef ADDRESS_CHECK_OKAY /* Avoid gcc warning.  */
+  /* A cast from a variable's address to bool is valid in expressions.  */
+  {
+    bool e1 = &s;
+    if (!e1)
+      error = 1;
+  }
+# endif
+#endif
+
+  /* Catch a bug in IBM AIX xlc compiler version 6.0.0.0
+     reported by James Lemley on 2005-10-05; see
+     https://lists.gnu.org/r/bug-coreutils/2005-10/msg00086.html
+     This is a runtime test, since a corresponding compile-time
+     test would rely on initializer extensions.  */
+  {
+    char digs[] = "0123456789";
+    if (&(digs + 5)[-2 + (bool) 1] != &digs[4])
+      error = 1;
+  }
+
+  return error;
+}
diff --git a/src/grep/gnulib-tests/test-stddef.c b/src/grep/gnulib-tests/test-stddef.c
new file mode 100644
index 0000000..21b46b9
--- /dev/null
+++ b/src/grep/gnulib-tests/test-stddef.c
@@ -0,0 +1,77 @@
+/* Test of <stddef.h> substitute.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <stddef.h>
+#include <limits.h>
+#include <stdalign.h>
+#include "verify.h"
+
+/* Check that appropriate types are defined.  */
+wchar_t a = 'c';
+ptrdiff_t b = 1;
+size_t c = 2;
+max_align_t x;
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+/* Check that offsetof produces integer constants with correct type.  */
+struct d
+{
+  char e;
+  char f;
+};
+/* Solaris 10 has a bug where offsetof is under-parenthesized, and
+   cannot be used as an arbitrary expression.  However, since it is
+   unlikely to bite real code, we ignore that short-coming.  */
+/* verify (sizeof offsetof (struct d, e) == sizeof (size_t)); */
+verify (sizeof (offsetof (struct d, e)) == sizeof (size_t));
+verify (offsetof (struct d, f) == 1);
+
+/* offsetof promotes to an unsigned integer if and only if sizes do
+   not fit in int.  */
+verify ((offsetof (struct d, e) < -1) == (INT_MAX < (size_t) -1));
+
+/* Check max_align_t's alignment.  */
+verify (alignof (double) <= alignof (max_align_t));
+verify (alignof (int) <= alignof (max_align_t));
+verify (alignof (long double) <= alignof (max_align_t));
+verify (alignof (long int) <= alignof (max_align_t));
+verify (alignof (ptrdiff_t) <= alignof (max_align_t));
+verify (alignof (size_t) <= alignof (max_align_t));
+verify (alignof (wchar_t) <= alignof (max_align_t));
+verify (alignof (struct d) <= alignof (max_align_t));
+#if defined __GNUC__ || defined __clang__ || defined __IBM__ALIGNOF__
+verify (__alignof__ (double) <= __alignof__ (max_align_t));
+verify (__alignof__ (int) <= __alignof__ (max_align_t));
+verify (__alignof__ (long double) <= __alignof__ (max_align_t));
+verify (__alignof__ (long int) <= __alignof__ (max_align_t));
+verify (__alignof__ (ptrdiff_t) <= __alignof__ (max_align_t));
+verify (__alignof__ (size_t) <= __alignof__ (max_align_t));
+verify (__alignof__ (wchar_t) <= __alignof__ (max_align_t));
+verify (__alignof__ (struct d) <= __alignof__ (max_align_t));
+#endif
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-stdint.c b/src/grep/gnulib-tests/test-stdint.c
new file mode 100644
index 0000000..dc6fad7
--- /dev/null
+++ b/src/grep/gnulib-tests/test-stdint.c
@@ -0,0 +1,428 @@
+/* Test of <stdint.h> substitute.
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2006.  */
+
+#include <config.h>
+
+/* Whether to enable pedantic checks. */
+#define DO_PEDANTIC 0
+
+#include <stdint.h>
+
+#include "verify.h"
+#include "intprops.h"
+
+#if ((__GNUC__ >= 2) || (__clang_major__ >= 4)) && DO_PEDANTIC
+# define verify_same_types(expr1,expr2)  \
+    extern void _verify_func(__LINE__) (__typeof__ (expr1) *); \
+    extern void _verify_func(__LINE__) (__typeof__ (expr2) *);
+# define _verify_func(line) _verify_func2(line)
+# define _verify_func2(line) verify_func_ ## line
+#else
+# define verify_same_types(expr1,expr2) extern void verify_func (int)
+#endif
+
+/* 7.18.1.1. Exact-width integer types */
+/* 7.18.2.1. Limits of exact-width integer types */
+
+int8_t a1[3] = { INT8_C (17), INT8_MIN, INT8_MAX };
+verify (TYPE_MINIMUM (int8_t) == INT8_MIN);
+verify (TYPE_MAXIMUM (int8_t) == INT8_MAX);
+verify_same_types (INT8_MIN, (int8_t) 0 + 0);
+verify_same_types (INT8_MAX, (int8_t) 0 + 0);
+
+int16_t a2[3] = { INT16_C (17), INT16_MIN, INT16_MAX };
+verify (TYPE_MINIMUM (int16_t) == INT16_MIN);
+verify (TYPE_MAXIMUM (int16_t) == INT16_MAX);
+verify_same_types (INT16_MIN, (int16_t) 0 + 0);
+verify_same_types (INT16_MAX, (int16_t) 0 + 0);
+
+int32_t a3[3] = { INT32_C (17), INT32_MIN, INT32_MAX };
+verify (TYPE_MINIMUM (int32_t) == INT32_MIN);
+verify (TYPE_MAXIMUM (int32_t) == INT32_MAX);
+verify_same_types (INT32_MIN, (int32_t) 0 + 0);
+verify_same_types (INT32_MAX, (int32_t) 0 + 0);
+
+#ifdef INT64_MAX
+int64_t a4[3] = { INT64_C (17), INT64_MIN, INT64_MAX };
+verify (TYPE_MINIMUM (int64_t) == INT64_MIN);
+verify (TYPE_MAXIMUM (int64_t) == INT64_MAX);
+verify_same_types (INT64_MIN, (int64_t) 0 + 0);
+verify_same_types (INT64_MAX, (int64_t) 0 + 0);
+#endif
+
+uint8_t b1[2] = { UINT8_C (17), UINT8_MAX };
+verify (TYPE_MAXIMUM (uint8_t) == UINT8_MAX);
+verify_same_types (UINT8_MAX, (uint8_t) 0 + 0);
+
+uint16_t b2[2] = { UINT16_C (17), UINT16_MAX };
+verify (TYPE_MAXIMUM (uint16_t) == UINT16_MAX);
+verify_same_types (UINT16_MAX, (uint16_t) 0 + 0);
+
+uint32_t b3[2] = { UINT32_C (17), UINT32_MAX };
+verify (TYPE_MAXIMUM (uint32_t) == UINT32_MAX);
+verify_same_types (UINT32_MAX, (uint32_t) 0 + 0);
+
+#ifdef UINT64_MAX
+uint64_t b4[2] = { UINT64_C (17), UINT64_MAX };
+verify (TYPE_MAXIMUM (uint64_t) == UINT64_MAX);
+verify_same_types (UINT64_MAX, (uint64_t) 0 + 0);
+#endif
+
+#if INT8_MIN && INT8_MAX && INT16_MIN && INT16_MAX && INT32_MIN && INT32_MAX
+/* ok */
+#else
+err or;
+#endif
+
+#if UINT8_MAX && UINT16_MAX && UINT32_MAX
+/* ok */
+#else
+err or;
+#endif
+
+/* 7.18.1.2. Minimum-width integer types */
+/* 7.18.2.2. Limits of minimum-width integer types */
+
+int_least8_t c1[3] = { 17, INT_LEAST8_MIN, INT_LEAST8_MAX };
+verify (TYPE_MINIMUM (int_least8_t) == INT_LEAST8_MIN);
+verify (TYPE_MAXIMUM (int_least8_t) == INT_LEAST8_MAX);
+verify_same_types (INT_LEAST8_MIN, (int_least8_t) 0 + 0);
+verify_same_types (INT_LEAST8_MAX, (int_least8_t) 0 + 0);
+
+int_least16_t c2[3] = { 17, INT_LEAST16_MIN, INT_LEAST16_MAX };
+verify (TYPE_MINIMUM (int_least16_t) == INT_LEAST16_MIN);
+verify (TYPE_MAXIMUM (int_least16_t) == INT_LEAST16_MAX);
+verify_same_types (INT_LEAST16_MIN, (int_least16_t) 0 + 0);
+verify_same_types (INT_LEAST16_MAX, (int_least16_t) 0 + 0);
+
+int_least32_t c3[3] = { 17, INT_LEAST32_MIN, INT_LEAST32_MAX };
+verify (TYPE_MINIMUM (int_least32_t) == INT_LEAST32_MIN);
+verify (TYPE_MAXIMUM (int_least32_t) == INT_LEAST32_MAX);
+verify_same_types (INT_LEAST32_MIN, (int_least32_t) 0 + 0);
+verify_same_types (INT_LEAST32_MAX, (int_least32_t) 0 + 0);
+
+#ifdef INT_LEAST64_MAX
+int_least64_t c4[3] = { 17, INT_LEAST64_MIN, INT_LEAST64_MAX };
+verify (TYPE_MINIMUM (int_least64_t) == INT_LEAST64_MIN);
+verify (TYPE_MAXIMUM (int_least64_t) == INT_LEAST64_MAX);
+verify_same_types (INT_LEAST64_MIN, (int_least64_t) 0 + 0);
+verify_same_types (INT_LEAST64_MAX, (int_least64_t) 0 + 0);
+#endif
+
+uint_least8_t d1[2] = { 17, UINT_LEAST8_MAX };
+verify (TYPE_MAXIMUM (uint_least8_t) == UINT_LEAST8_MAX);
+verify_same_types (UINT_LEAST8_MAX, (uint_least8_t) 0 + 0);
+
+uint_least16_t d2[2] = { 17, UINT_LEAST16_MAX };
+verify (TYPE_MAXIMUM (uint_least16_t) == UINT_LEAST16_MAX);
+verify_same_types (UINT_LEAST16_MAX, (uint_least16_t) 0 + 0);
+
+uint_least32_t d3[2] = { 17, UINT_LEAST32_MAX };
+verify (TYPE_MAXIMUM (uint_least32_t) == UINT_LEAST32_MAX);
+verify_same_types (UINT_LEAST32_MAX, (uint_least32_t) 0 + 0);
+
+#ifdef UINT_LEAST64_MAX
+uint_least64_t d4[2] = { 17, UINT_LEAST64_MAX };
+verify (TYPE_MAXIMUM (uint_least64_t) == UINT_LEAST64_MAX);
+verify_same_types (UINT_LEAST64_MAX, (uint_least64_t) 0 + 0);
+#endif
+
+#if INT_LEAST8_MIN && INT_LEAST8_MAX && INT_LEAST16_MIN && INT_LEAST16_MAX && INT_LEAST32_MIN && INT_LEAST32_MAX
+/* ok */
+#else
+err or;
+#endif
+
+#if UINT_LEAST8_MAX && UINT_LEAST16_MAX && UINT_LEAST32_MAX
+/* ok */
+#else
+err or;
+#endif
+
+/* 7.18.1.3. Fastest minimum-width integer types */
+/* 7.18.2.3. Limits of fastest minimum-width integer types */
+
+int_fast8_t e1[3] = { 17, INT_FAST8_MIN, INT_FAST8_MAX };
+verify (TYPE_MINIMUM (int_fast8_t) == INT_FAST8_MIN);
+verify (TYPE_MAXIMUM (int_fast8_t) == INT_FAST8_MAX);
+verify_same_types (INT_FAST8_MIN, (int_fast8_t) 0 + 0);
+verify_same_types (INT_FAST8_MAX, (int_fast8_t) 0 + 0);
+
+int_fast16_t e2[3] = { 17, INT_FAST16_MIN, INT_FAST16_MAX };
+verify (TYPE_MINIMUM (int_fast16_t) == INT_FAST16_MIN);
+verify (TYPE_MAXIMUM (int_fast16_t) == INT_FAST16_MAX);
+verify_same_types (INT_FAST16_MIN, (int_fast16_t) 0 + 0);
+verify_same_types (INT_FAST16_MAX, (int_fast16_t) 0 + 0);
+
+int_fast32_t e3[3] = { 17, INT_FAST32_MIN, INT_FAST32_MAX };
+verify (TYPE_MINIMUM (int_fast32_t) == INT_FAST32_MIN);
+verify (TYPE_MAXIMUM (int_fast32_t) == INT_FAST32_MAX);
+verify_same_types (INT_FAST32_MIN, (int_fast32_t) 0 + 0);
+verify_same_types (INT_FAST32_MAX, (int_fast32_t) 0 + 0);
+
+#ifdef INT_FAST64_MAX
+int_fast64_t e4[3] = { 17, INT_FAST64_MIN, INT_FAST64_MAX };
+verify (TYPE_MINIMUM (int_fast64_t) == INT_FAST64_MIN);
+verify (TYPE_MAXIMUM (int_fast64_t) == INT_FAST64_MAX);
+verify_same_types (INT_FAST64_MIN, (int_fast64_t) 0 + 0);
+verify_same_types (INT_FAST64_MAX, (int_fast64_t) 0 + 0);
+#endif
+
+uint_fast8_t f1[2] = { 17, UINT_FAST8_MAX };
+verify (TYPE_MAXIMUM (uint_fast8_t) == UINT_FAST8_MAX);
+verify_same_types (UINT_FAST8_MAX, (uint_fast8_t) 0 + 0);
+
+uint_fast16_t f2[2] = { 17, UINT_FAST16_MAX };
+verify (TYPE_MAXIMUM (uint_fast16_t) == UINT_FAST16_MAX);
+verify_same_types (UINT_FAST16_MAX, (uint_fast16_t) 0 + 0);
+
+uint_fast32_t f3[2] = { 17, UINT_FAST32_MAX };
+verify (TYPE_MAXIMUM (uint_fast32_t) == UINT_FAST32_MAX);
+verify_same_types (UINT_FAST32_MAX, (uint_fast32_t) 0 + 0);
+
+#ifdef UINT_FAST64_MAX
+uint_fast64_t f4[2] = { 17, UINT_FAST64_MAX };
+verify (TYPE_MAXIMUM (uint_fast64_t) == UINT_FAST64_MAX);
+verify_same_types (UINT_FAST64_MAX, (uint_fast64_t) 0 + 0);
+#endif
+
+#if INT_FAST8_MIN && INT_FAST8_MAX && INT_FAST16_MIN && INT_FAST16_MAX && INT_FAST32_MIN && INT_FAST32_MAX
+/* ok */
+#else
+err or;
+#endif
+
+#if UINT_FAST8_MAX && UINT_FAST16_MAX && UINT_FAST32_MAX
+/* ok */
+#else
+err or;
+#endif
+
+/* 7.18.1.4. Integer types capable of holding object pointers */
+/* 7.18.2.4. Limits of integer types capable of holding object pointers */
+
+intptr_t g[3] = { 17, INTPTR_MIN, INTPTR_MAX };
+verify (sizeof (void *) <= sizeof (intptr_t));
+verify (TYPE_MINIMUM (intptr_t) == INTPTR_MIN);
+verify (TYPE_MAXIMUM (intptr_t) == INTPTR_MAX);
+verify_same_types (INTPTR_MIN, (intptr_t) 0 + 0);
+verify_same_types (INTPTR_MAX, (intptr_t) 0 + 0);
+
+uintptr_t h[2] = { 17, UINTPTR_MAX };
+verify (sizeof (void *) <= sizeof (uintptr_t));
+verify (TYPE_MAXIMUM (uintptr_t) == UINTPTR_MAX);
+verify_same_types (UINTPTR_MAX, (uintptr_t) 0 + 0);
+
+#if INTPTR_MIN && INTPTR_MAX && UINTPTR_MAX
+/* ok */
+#else
+err or;
+#endif
+
+/* 7.18.1.5. Greatest-width integer types */
+/* 7.18.2.5. Limits of greatest-width integer types */
+
+intmax_t i[3] = { INTMAX_C (17), INTMAX_MIN, INTMAX_MAX };
+verify (TYPE_MINIMUM (intmax_t) == INTMAX_MIN);
+verify (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX);
+verify_same_types (INTMAX_MIN, (intmax_t) 0 + 0);
+verify_same_types (INTMAX_MAX, (intmax_t) 0 + 0);
+
+uintmax_t j[2] = { UINTMAX_C (17), UINTMAX_MAX };
+verify (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX);
+verify_same_types (UINTMAX_MAX, (uintmax_t) 0 + 0);
+
+/* As of 2007, Sun C and HP-UX 10.20 cc don't support 'long long' constants in
+   the preprocessor.  */
+#if !(defined __SUNPRO_C || (defined __hpux && !defined __GNUC__))
+#if INTMAX_MIN && INTMAX_MAX && UINTMAX_MAX
+/* ok */
+#else
+err or;
+#endif
+#endif
+
+/* 7.18.3. Limits of other integer types */
+
+#include <stddef.h>
+
+verify (TYPE_MINIMUM (ptrdiff_t) == PTRDIFF_MIN);
+verify (TYPE_MAXIMUM (ptrdiff_t) == PTRDIFF_MAX);
+verify_same_types (PTRDIFF_MIN, (ptrdiff_t) 0 + 0);
+verify_same_types (PTRDIFF_MAX, (ptrdiff_t) 0 + 0);
+
+#if PTRDIFF_MIN && PTRDIFF_MAX
+/* ok */
+#else
+err or;
+#endif
+
+#include <signal.h>
+
+verify (TYPE_MINIMUM (sig_atomic_t) == SIG_ATOMIC_MIN);
+verify (TYPE_MAXIMUM (sig_atomic_t) == SIG_ATOMIC_MAX);
+verify_same_types (SIG_ATOMIC_MIN, (sig_atomic_t) 0 + 0);
+verify_same_types (SIG_ATOMIC_MAX, (sig_atomic_t) 0 + 0);
+
+#if SIG_ATOMIC_MIN != 17 && SIG_ATOMIC_MAX
+/* ok */
+#else
+err or;
+#endif
+
+verify (TYPE_MAXIMUM (size_t) == SIZE_MAX);
+verify_same_types (SIZE_MAX, (size_t) 0 + 0);
+
+#if SIZE_MAX
+/* ok */
+#else
+err or;
+#endif
+
+#if HAVE_WCHAR_T
+verify (TYPE_MINIMUM (wchar_t) == WCHAR_MIN);
+verify (TYPE_MAXIMUM (wchar_t) == WCHAR_MAX);
+verify_same_types (WCHAR_MIN, (wchar_t) 0 + 0);
+verify_same_types (WCHAR_MAX, (wchar_t) 0 + 0);
+
+# if WCHAR_MIN != 17 && WCHAR_MAX
+/* ok */
+# else
+err or;
+# endif
+#endif
+
+#if HAVE_WINT_T
+# include <wchar.h>
+
+verify (TYPE_MINIMUM (wint_t) == WINT_MIN);
+verify (TYPE_MAXIMUM (wint_t) == WINT_MAX);
+verify_same_types (WINT_MIN, (wint_t) 0 + 0);
+verify_same_types (WINT_MAX, (wint_t) 0 + 0);
+
+# if WINT_MIN != 17 && WINT_MAX
+/* ok */
+# else
+err or;
+# endif
+#endif
+
+/* 7.18.4. Macros for integer constants */
+
+verify (INT8_C (17) == 17);
+verify_same_types (INT8_C (17), (int_least8_t)0 + 0);
+verify (UINT8_C (17) == 17);
+verify_same_types (UINT8_C (17), (uint_least8_t)0 + 0);
+
+verify (INT16_C (17) == 17);
+verify_same_types (INT16_C (17), (int_least16_t)0 + 0);
+verify (UINT16_C (17) == 17);
+verify_same_types (UINT16_C (17), (uint_least16_t)0 + 0);
+
+verify (INT32_C (17) == 17);
+verify_same_types (INT32_C (17), (int_least32_t)0 + 0);
+verify (UINT32_C (17) == 17);
+verify_same_types (UINT32_C (17), (uint_least32_t)0 + 0);
+
+#ifdef INT64_C
+verify (INT64_C (17) == 17);
+verify_same_types (INT64_C (17), (int_least64_t)0 + 0);
+#endif
+#ifdef UINT64_C
+verify (UINT64_C (17) == 17);
+verify_same_types (UINT64_C (17), (uint_least64_t)0 + 0);
+#endif
+
+verify (INTMAX_C (17) == 17);
+verify_same_types (INTMAX_C (17), (intmax_t)0 + 0);
+verify (UINTMAX_C (17) == 17);
+verify_same_types (UINTMAX_C (17), (uintmax_t)0 + 0);
+
+/* Use _GL_VERIFY (with a fixed-length diagnostic string) rather than verify,
+   because the latter would require forming each stringified expression, and
+   many of these would be so long as to trigger a warning/error like this:
+
+   test-stdint.c:407:1: error: string length '6980' is greater than the \
+     length '4095' ISO C99 compilers are required to support \
+     [-Werror=overlength-strings]
+  */
+#define verify_width(width, min, max) \
+  _GL_VERIFY ((max) >> ((width) - 1 - ((min) < 0)) == 1, \
+              "verify_width check", -)
+
+/* Macros specified by ISO/IEC TS 18661-1:2014.  */
+
+#ifdef INT8_MAX
+verify_width (INT8_WIDTH, INT8_MIN, INT8_MAX);
+#endif
+#ifdef UINT8_MAX
+verify_width (UINT8_WIDTH, 0, UINT8_MAX);
+#endif
+#ifdef INT16_MAX
+verify_width (INT16_WIDTH, INT16_MIN, INT16_MAX);
+#endif
+#ifdef UINT16_MAX
+verify_width (UINT16_WIDTH, 0, UINT16_MAX);
+#endif
+#ifdef INT32_MAX
+verify_width (INT32_WIDTH, INT32_MIN, INT32_MAX);
+#endif
+#ifdef UINT32_MAX
+verify_width (UINT32_WIDTH, 0, UINT32_MAX);
+#endif
+#ifdef INT64_MAX
+verify_width (INT64_WIDTH, INT64_MIN, INT64_MAX);
+#endif
+#ifdef UINT64_MAX
+verify_width (UINT64_WIDTH, 0, UINT64_MAX);
+#endif
+verify_width (INT_LEAST8_WIDTH, INT_LEAST8_MIN, INT_LEAST8_MAX);
+verify_width (UINT_LEAST8_WIDTH, 0, UINT_LEAST8_MAX);
+verify_width (INT_LEAST16_WIDTH, INT_LEAST16_MIN, INT_LEAST16_MAX);
+verify_width (UINT_LEAST16_WIDTH, 0, UINT_LEAST16_MAX);
+verify_width (INT_LEAST32_WIDTH, INT_LEAST32_MIN, INT_LEAST32_MAX);
+verify_width (UINT_LEAST32_WIDTH, 0, UINT_LEAST32_MAX);
+verify_width (INT_LEAST64_WIDTH, INT_LEAST64_MIN, INT_LEAST64_MAX);
+verify_width (UINT_LEAST64_WIDTH, 0, UINT_LEAST64_MAX);
+verify_width (INT_FAST8_WIDTH, INT_FAST8_MIN, INT_FAST8_MAX);
+verify_width (UINT_FAST8_WIDTH, 0, UINT_FAST8_MAX);
+verify_width (INT_FAST16_WIDTH, INT_FAST16_MIN, INT_FAST16_MAX);
+verify_width (UINT_FAST16_WIDTH, 0, UINT_FAST16_MAX);
+verify_width (INT_FAST32_WIDTH, INT_FAST32_MIN, INT_FAST32_MAX);
+verify_width (UINT_FAST32_WIDTH, 0, UINT_FAST32_MAX);
+verify_width (INT_FAST64_WIDTH, INT_FAST64_MIN, INT_FAST64_MAX);
+verify_width (UINT_FAST64_WIDTH, 0, UINT_FAST64_MAX);
+verify_width (INTPTR_WIDTH, INTPTR_MIN, INTPTR_MAX);
+verify_width (UINTPTR_WIDTH, 0, UINTPTR_MAX);
+verify_width (INTMAX_WIDTH, INTMAX_MIN, INTMAX_MAX);
+verify_width (UINTMAX_WIDTH, 0, UINTMAX_MAX);
+verify_width (PTRDIFF_WIDTH, PTRDIFF_MIN, PTRDIFF_MAX);
+verify_width (SIZE_WIDTH, 0, SIZE_MAX);
+verify_width (WCHAR_WIDTH, WCHAR_MIN, WCHAR_MAX);
+#ifdef WINT_MAX
+verify_width (WINT_WIDTH, WINT_MIN, WINT_MAX);
+#endif
+#ifdef SIG_ATOMIC_MAX
+verify_width (SIG_ATOMIC_WIDTH, SIG_ATOMIC_MIN, SIG_ATOMIC_MAX);
+#endif
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-stdio.c b/src/grep/gnulib-tests/test-stdio.c
new file mode 100644
index 0000000..8fd000a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-stdio.c
@@ -0,0 +1,43 @@
+/* Test of <stdio.h> substitute.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "verify.h"
+
+/* Check that the various SEEK_* macros are defined.  */
+int sk[] = { SEEK_CUR, SEEK_END, SEEK_SET };
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+/* Check that the types are all defined.  */
+fpos_t t1;
+off_t t2;
+size_t t3;
+ssize_t t4;
+va_list t5;
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-stdlib.c b/src/grep/gnulib-tests/test-stdlib.c
new file mode 100644
index 0000000..427263e
--- /dev/null
+++ b/src/grep/gnulib-tests/test-stdlib.c
@@ -0,0 +1,54 @@
+/* Test of <stdlib.h> substitute.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "verify.h"
+
+/* Check that EXIT_SUCCESS is 0, per POSIX.  */
+static int exitcode = EXIT_SUCCESS;
+#if EXIT_SUCCESS
+"oops"
+#endif
+
+/* Check for GNU value (not guaranteed by POSIX, but is guaranteed by
+   gnulib).  */
+#if EXIT_FAILURE != 1
+"oops"
+#endif
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+#if GNULIB_TEST_SYSTEM_POSIX
+# include "test-sys_wait.h"
+#else
+# define test_sys_wait_macros() 0
+#endif
+
+int
+main (void)
+{
+  if (test_sys_wait_macros ())
+    return 1;
+
+  return exitcode;
+}
diff --git a/src/grep/gnulib-tests/test-strerror.c b/src/grep/gnulib-tests/test-strerror.c
new file mode 100644
index 0000000..2e4125b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-strerror.c
@@ -0,0 +1,75 @@
+/* Test of strerror() function.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (strerror, char *, (int));
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  char *str;
+
+  errno = 0;
+  str = strerror (EACCES);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT (errno == 0);
+
+  errno = 0;
+  str = strerror (ETIMEDOUT);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT (errno == 0);
+
+  errno = 0;
+  str = strerror (EOVERFLOW);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT (errno == 0);
+
+  /* POSIX requires strerror (0) to succeed.  Reject use of "Unknown
+     error", but allow "Success", "No error", or even Solaris' "Error
+     0" which are distinct patterns from true out-of-range strings.
+     http://austingroupbugs.net/view.php?id=382  */
+  errno = 0;
+  str = strerror (0);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT (errno == 0);
+  ASSERT (strstr (str, "nknown") == NULL);
+  ASSERT (strstr (str, "ndefined") == NULL);
+
+  /* POSIX requires strerror to produce a non-NULL result for all
+     inputs; as an extension, we also guarantee a non-empty result.
+     Reporting EINVAL is optional.  */
+  errno = 0;
+  str = strerror (-3);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT (errno == 0 || errno == EINVAL);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-strerror_r.c b/src/grep/gnulib-tests/test-strerror_r.c
new file mode 100644
index 0000000..6e72194
--- /dev/null
+++ b/src/grep/gnulib-tests/test-strerror_r.c
@@ -0,0 +1,178 @@
+/* Test of strerror_r() function.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (strerror_r, int, (int, char *, size_t));
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  char buf[100];
+  int ret;
+
+  /* Test results with valid errnum and enough room.  */
+
+  errno = 0;
+  buf[0] = '\0';
+  ASSERT (strerror_r (EACCES, buf, sizeof buf) == 0);
+  ASSERT (buf[0] != '\0');
+  ASSERT (errno == 0);
+  ASSERT (strlen (buf) < sizeof buf);
+
+  errno = 0;
+  buf[0] = '\0';
+  ASSERT (strerror_r (ETIMEDOUT, buf, sizeof buf) == 0);
+  ASSERT (buf[0] != '\0');
+  ASSERT (errno == 0);
+  ASSERT (strlen (buf) < sizeof buf);
+
+  errno = 0;
+  buf[0] = '\0';
+  ASSERT (strerror_r (EOVERFLOW, buf, sizeof buf) == 0);
+  ASSERT (buf[0] != '\0');
+  ASSERT (errno == 0);
+  ASSERT (strlen (buf) < sizeof buf);
+
+  /* POSIX requires strerror (0) to succeed.  Reject use of "Unknown
+     error", but allow "Success", "No error", or even Solaris' "Error
+     0" which are distinct patterns from true out-of-range strings.
+     http://austingroupbugs.net/view.php?id=382  */
+  errno = 0;
+  buf[0] = '\0';
+  ret = strerror_r (0, buf, sizeof buf);
+  ASSERT (ret == 0);
+  ASSERT (buf[0]);
+  ASSERT (errno == 0);
+  ASSERT (strstr (buf, "nknown") == NULL);
+  ASSERT (strstr (buf, "ndefined") == NULL);
+
+  /* Test results with out-of-range errnum and enough room.  POSIX
+     allows an empty string on success, and allows an unchanged buf on
+     error, but these are not useful, so we guarantee contents.  */
+  errno = 0;
+  buf[0] = '^';
+  ret = strerror_r (-3, buf, sizeof buf);
+  ASSERT (ret == 0 || ret == EINVAL);
+  ASSERT (buf[0] != '^');
+  ASSERT (*buf);
+  ASSERT (errno == 0);
+  ASSERT (strlen (buf) < sizeof buf);
+
+  /* Test results with a too small buffer.  POSIX requires an error;
+     only ERANGE for 0 and valid errors, and a choice of ERANGE or
+     EINVAL for out-of-range values.  On error, POSIX permits buf to
+     be empty, unchanged, or unterminated, but these are not useful,
+     so we guarantee NUL-terminated truncated contents for all but
+     size 0.  http://austingroupbugs.net/view.php?id=398.  Also ensure
+     that no out-of-bounds writes occur.  */
+  {
+    int errs[] = { EACCES, 0, -3, };
+    int j;
+
+    buf[sizeof buf - 1] = '\0';
+    for (j = 0; j < SIZEOF (errs); j++)
+      {
+        int err = errs[j];
+        char buf2[sizeof buf] = "";
+        size_t len;
+        size_t i;
+
+        strerror_r (err, buf2, sizeof buf2);
+        len = strlen (buf2);
+        ASSERT (len < sizeof buf);
+
+        for (i = 0; i <= len; i++)
+          {
+            memset (buf, '^', sizeof buf - 1);
+            errno = 0;
+            ret = strerror_r (err, buf, i);
+            ASSERT (errno == 0);
+            if (j == 2)
+              ASSERT (ret == ERANGE || ret == EINVAL);
+            else
+              ASSERT (ret == ERANGE);
+            if (i)
+              {
+                ASSERT (strncmp (buf, buf2, i - 1) == 0);
+                ASSERT (buf[i - 1] == '\0');
+              }
+            ASSERT (strspn (buf + i, "^") == sizeof buf - 1 - i);
+          }
+
+        strcpy (buf, "BADFACE");
+        errno = 0;
+        ret = strerror_r (err, buf, len + 1);
+        ASSERT (ret != ERANGE);
+        ASSERT (errno == 0);
+        ASSERT (strcmp (buf, buf2) == 0);
+      }
+  }
+
+#if GNULIB_STRERROR
+  /* Test that strerror_r does not clobber strerror buffer.  On some
+     platforms, this test can only succeed if gnulib also replaces
+     strerror.  */
+  {
+    const char *msg1;
+    const char *msg2;
+    const char *msg3;
+    const char *msg4;
+    char *str1;
+    char *str2;
+    char *str3;
+    char *str4;
+
+    msg1 = strerror (ENOENT);
+    ASSERT (msg1);
+    str1 = strdup (msg1);
+    ASSERT (str1);
+
+    msg2 = strerror (ERANGE);
+    ASSERT (msg2);
+    str2 = strdup (msg2);
+    ASSERT (str2);
+
+    msg3 = strerror (-4);
+    ASSERT (msg3);
+    str3 = strdup (msg3);
+    ASSERT (str3);
+
+    msg4 = strerror (1729576);
+    ASSERT (msg4);
+    str4 = strdup (msg4);
+    ASSERT (str4);
+
+    strerror_r (EACCES, buf, sizeof buf);
+    strerror_r (-5, buf, sizeof buf);
+    ASSERT (STREQ (msg4, str4));
+
+    free (str1);
+    free (str2);
+    free (str3);
+    free (str4);
+  }
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-striconv.c b/src/grep/gnulib-tests/test-striconv.c
new file mode 100644
index 0000000..55bd3df
--- /dev/null
+++ b/src/grep/gnulib-tests/test-striconv.c
@@ -0,0 +1,180 @@
+/* Test of character set conversion.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "striconv.h"
+
+#if HAVE_ICONV
+# include <iconv.h>
+#endif
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+#if HAVE_ICONV
+  /* Assume that iconv() supports at least the encodings ASCII, ISO-8859-1,
+     and UTF-8.  */
+  iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1");
+  iconv_t cd_utf8_to_88591 = iconv_open ("ISO-8859-1", "UTF-8");
+
+  ASSERT (cd_88591_to_utf8 != (iconv_t)(-1));
+  ASSERT (cd_utf8_to_88591 != (iconv_t)(-1));
+
+  /* ------------------------- Test mem_cd_iconv() ------------------------- */
+
+  /* Test conversion from ISO-8859-1 to UTF-8 with no errors.  */
+  {
+    static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    static const char expected[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    char *result = NULL;
+    size_t length = 0;
+    int retval = mem_cd_iconv (input, strlen (input), cd_88591_to_utf8,
+                               &result, &length);
+    ASSERT (retval == 0);
+    ASSERT (length == strlen (expected));
+    ASSERT (result != NULL && memcmp (result, expected, strlen (expected)) == 0);
+    free (result);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with no errors.  */
+  {
+    static const char input[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    static const char expected[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    char *result = NULL;
+    size_t length = 0;
+    int retval = mem_cd_iconv (input, strlen (input), cd_utf8_to_88591,
+                               &result, &length);
+    ASSERT (retval == 0);
+    ASSERT (length == strlen (expected));
+    ASSERT (result != NULL && memcmp (result, expected, strlen (expected)) == 0);
+    free (result);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EILSEQ.  */
+  {
+    static const char input[] = "\342\202\254"; /* EURO SIGN */
+    char *result = NULL;
+    size_t length = 0;
+    int retval = mem_cd_iconv (input, strlen (input), cd_utf8_to_88591,
+                               &result, &length);
+    ASSERT (retval == -1 && errno == EILSEQ);
+    ASSERT (result == NULL);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EINVAL.  */
+  {
+    static const char input[] = "\342";
+    char *result = NULL;
+    size_t length = 0;
+    int retval = mem_cd_iconv (input, strlen (input), cd_utf8_to_88591,
+                               &result, &length);
+    ASSERT (retval == 0);
+    ASSERT (length == 0);
+    free (result);
+  }
+
+  /* ------------------------- Test str_cd_iconv() ------------------------- */
+
+  /* Test conversion from ISO-8859-1 to UTF-8 with no errors.  */
+  {
+    static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    static const char expected[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    char *result = str_cd_iconv (input, cd_88591_to_utf8);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, expected) == 0);
+    free (result);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with no errors.  */
+  {
+    static const char input[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    static const char expected[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    char *result = str_cd_iconv (input, cd_utf8_to_88591);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, expected) == 0);
+    free (result);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EILSEQ.  */
+  {
+    static const char input[] = "Costs: 27 \342\202\254"; /* EURO SIGN */
+    char *result = str_cd_iconv (input, cd_utf8_to_88591);
+    ASSERT (result == NULL && errno == EILSEQ);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EINVAL.  */
+  {
+    static const char input[] = "\342";
+    char *result = str_cd_iconv (input, cd_utf8_to_88591);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "") == 0);
+    free (result);
+  }
+
+  iconv_close (cd_88591_to_utf8);
+  iconv_close (cd_utf8_to_88591);
+
+  /* -------------------------- Test str_iconv() -------------------------- */
+
+  /* Test conversion from ISO-8859-1 to UTF-8 with no errors.  */
+  {
+    static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    static const char expected[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    char *result = str_iconv (input, "ISO-8859-1", "UTF-8");
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, expected) == 0);
+    free (result);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with no errors.  */
+  {
+    static const char input[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+    static const char expected[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+    char *result = str_iconv (input, "UTF-8", "ISO-8859-1");
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, expected) == 0);
+    free (result);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EILSEQ.  */
+  {
+    static const char input[] = "Costs: 27 \342\202\254"; /* EURO SIGN */
+    char *result = str_iconv (input, "UTF-8", "ISO-8859-1");
+    ASSERT (result == NULL && errno == EILSEQ);
+  }
+
+  /* Test conversion from UTF-8 to ISO-8859-1 with EINVAL.  */
+  {
+    static const char input[] = "\342";
+    char *result = str_iconv (input, "UTF-8", "ISO-8859-1");
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "") == 0);
+    free (result);
+  }
+
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-string.c b/src/grep/gnulib-tests/test-string.c
new file mode 100644
index 0000000..bad996f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-string.c
@@ -0,0 +1,33 @@
+/* Test of <string.h> substitute.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "verify.h"
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-strnlen.c b/src/grep/gnulib-tests/test-strnlen.c
new file mode 100644
index 0000000..6470ebc
--- /dev/null
+++ b/src/grep/gnulib-tests/test-strnlen.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2010-2021 Free Software Foundation, Inc.
+ * Written by Eric Blake
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (strnlen, size_t, (char const *, size_t));
+
+#include <stdlib.h>
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  size_t i;
+  char *page_boundary = (char *) zerosize_ptr ();
+  if (!page_boundary)
+    {
+      page_boundary = malloc (0x1000);
+      ASSERT (page_boundary);
+      page_boundary += 0x1000;
+    }
+
+  /* Basic behavior tests.  */
+  ASSERT (strnlen ("a", 0) == 0);
+  ASSERT (strnlen ("a", 1) == 1);
+  ASSERT (strnlen ("a", 2) == 1);
+  ASSERT (strnlen ("", 0x100000) == 0);
+
+  /* Memory fence and alignment testing.  */
+  for (i = 0; i < 512; i++)
+    {
+      char *start = page_boundary - i;
+      size_t j = i;
+      memset (start, 'x', i);
+      do
+        {
+          if (i != j)
+            {
+              start[j] = 0;
+              ASSERT (strnlen (start, i + j) == j);
+            }
+          ASSERT (strnlen (start, i) == j);
+          ASSERT (strnlen (start, j) == j);
+        }
+      while (j--);
+    }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-strstr.c b/src/grep/gnulib-tests/test-strstr.c
new file mode 100644
index 0000000..434fc23
--- /dev/null
+++ b/src/grep/gnulib-tests/test-strstr.c
@@ -0,0 +1,301 @@
+/*
+ * Copyright (C) 2004, 2007-2021 Free Software Foundation, Inc.
+ * Written by Bruno Haible and Eric Blake
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (strstr, char *, (char const *, char const *));
+
+#include <signal.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+#if HAVE_DECL_ALARM
+  /* Declare failure if test takes too long, by using default abort
+     caused by SIGALRM.  All known platforms that lack alarm also have
+     a quadratic strstr, and the replacement strstr is known to not
+     take too long.  */
+  int alarm_value = 50;
+  signal (SIGALRM, SIG_DFL);
+  alarm (alarm_value);
+#endif
+
+  {
+    const char input[] = "foo";
+    const char *result = strstr (input, "");
+    ASSERT (result == input);
+  }
+
+  {
+    const char input[] = "foo";
+    const char *result = strstr (input, "o");
+    ASSERT (result == input + 1);
+  }
+
+  {
+    /* On some platforms, the memchr() functions reads past the first
+       occurrence of the byte to be searched, leading to an out-of-bounds
+       read access for strstr().
+       See <https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=521737>.
+       This is a bug in memchr(), see the Austin Group's clarification
+       <https://www.opengroup.org/austin/docs/austin_454.txt>.  */
+    const char *fix = "aBaaaaaaaaaaax";
+    char *page_boundary = (char *) zerosize_ptr ();
+    size_t len = strlen (fix) + 1;
+    char *input = page_boundary ? page_boundary - len : malloc (len);
+    const char *result;
+
+    strcpy (input, fix);
+    result = strstr (input, "B1x");
+    ASSERT (result == NULL);
+    if (!page_boundary)
+      free (input);
+  }
+
+  {
+    const char input[] = "ABC ABCDAB ABCDABCDABDE";
+    const char *result = strstr (input, "ABCDABD");
+    ASSERT (result == input + 15);
+  }
+
+  {
+    const char input[] = "ABC ABCDAB ABCDABCDABDE";
+    const char *result = strstr (input, "ABCDABE");
+    ASSERT (result == NULL);
+  }
+
+  {
+    const char input[] = "ABC ABCDAB ABCDABCDABDE";
+    const char *result = strstr (input, "ABCDABCD");
+    ASSERT (result == input + 11);
+  }
+
+  /* Check that a long periodic needle does not cause false positives.  */
+  {
+    const char input[] = "F_BD_CE_BD_EF_BF_BD_EF_BF_BD_EF_BF_BD_EF_BF_BD"
+                         "_C3_88_20_EF_BF_BD_EF_BF_BD_EF_BF_BD"
+                         "_C3_A7_20_EF_BF_BD";
+    const char need[] = "_EF_BF_BD_EF_BF_BD_EF_BF_BD_EF_BF_BD_EF_BF_BD";
+    const char *result = strstr (input, need);
+    ASSERT (result == NULL);
+  }
+  {
+    const char input[] = "F_BD_CE_BD_EF_BF_BD_EF_BF_BD_EF_BF_BD_EF_BF_BD"
+                         "_C3_88_20_EF_BF_BD_EF_BF_BD_EF_BF_BD"
+                         "_C3_A7_20_EF_BF_BD_DA_B5_C2_A6_20"
+                         "_EF_BF_BD_EF_BF_BD_EF_BF_BD_EF_BF_BD_EF_BF_BD";
+    const char need[] = "_EF_BF_BD_EF_BF_BD_EF_BF_BD_EF_BF_BD_EF_BF_BD";
+    const char *result = strstr (input, need);
+    ASSERT (result == input + 115);
+  }
+
+  /* Check that a very long haystack is handled quickly if the needle is
+     short and occurs near the beginning.  */
+  {
+    size_t repeat = 10000;
+    size_t m = 1000000;
+    const char *needle =
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
+    char *haystack = (char *) malloc (m + 1);
+    if (haystack != NULL)
+      {
+        memset (haystack, 'A', m);
+        haystack[0] = 'B';
+        haystack[m] = '\0';
+
+        for (; repeat > 0; repeat--)
+          {
+            ASSERT (strstr (haystack, needle) == haystack + 1);
+          }
+
+        free (haystack);
+      }
+  }
+
+  /* Check that a very long needle is discarded quickly if the haystack is
+     short.  */
+  {
+    size_t repeat = 10000;
+    size_t m = 1000000;
+    const char *haystack =
+      "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+      "ABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAB";
+    char *needle = (char *) malloc (m + 1);
+    if (needle != NULL)
+      {
+        memset (needle, 'A', m);
+        needle[m] = '\0';
+
+        for (; repeat > 0; repeat--)
+          {
+            ASSERT (strstr (haystack, needle) == NULL);
+          }
+
+        free (needle);
+      }
+  }
+
+  /* Check that the asymptotic worst-case complexity is not quadratic.  */
+  {
+    size_t m = 1000000;
+    char *haystack = (char *) malloc (2 * m + 2);
+    char *needle = (char *) malloc (m + 2);
+    if (haystack != NULL && needle != NULL)
+      {
+        const char *result;
+
+        memset (haystack, 'A', 2 * m);
+        haystack[2 * m] = 'B';
+        haystack[2 * m + 1] = '\0';
+
+        memset (needle, 'A', m);
+        needle[m] = 'B';
+        needle[m + 1] = '\0';
+
+        result = strstr (haystack, needle);
+        ASSERT (result == haystack + m);
+      }
+    free (needle);
+    free (haystack);
+  }
+
+  /* Sublinear speed is only possible in memmem; strstr must examine
+     every character of haystack to find its length.  */
+
+
+  {
+    /* Ensure that with a barely periodic "short" needle, strstr's
+       search does not mistakenly skip just past the match point.
+       This use of strstr would mistakenly return NULL before
+       gnulib v0.0-4927.  */
+    const char *haystack =
+      "\n"
+      "with_build_libsubdir\n"
+      "with_local_prefix\n"
+      "with_gxx_include_dir\n"
+      "with_cpp_install_dir\n"
+      "enable_generated_files_in_srcdir\n"
+      "with_gnu_ld\n"
+      "with_ld\n"
+      "with_demangler_in_ld\n"
+      "with_gnu_as\n"
+      "with_as\n"
+      "enable_largefile\n"
+      "enable_werror_always\n"
+      "enable_checking\n"
+      "enable_coverage\n"
+      "enable_gather_detailed_mem_stats\n"
+      "enable_build_with_cxx\n"
+      "with_stabs\n"
+      "enable_multilib\n"
+      "enable___cxa_atexit\n"
+      "enable_decimal_float\n"
+      "enable_fixed_point\n"
+      "enable_threads\n"
+      "enable_tls\n"
+      "enable_objc_gc\n"
+      "with_dwarf2\n"
+      "enable_shared\n"
+      "with_build_sysroot\n"
+      "with_sysroot\n"
+      "with_specs\n"
+      "with_pkgversion\n"
+      "with_bugurl\n"
+      "enable_languages\n"
+      "with_multilib_list\n";
+    const char *needle = "\n"
+      "with_gnu_ld\n";
+    const char* p = strstr (haystack, needle);
+    ASSERT (p - haystack == 114);
+  }
+
+  {
+    /* Same bug, shorter trigger.  */
+    const char *haystack = "..wi.d.";
+    const char *needle = ".d.";
+    const char* p = strstr (haystack, needle);
+    ASSERT (p - haystack == 4);
+  }
+
+  {
+    /* Like the above, but trigger the flaw in two_way_long_needle
+       by using a needle of length LONG_NEEDLE_THRESHOLD (32) or greater.
+       Rather than trying to find the right alignment manually, I've
+       arbitrarily chosen the following needle and template for the
+       haystack, and ensure that for each placement of the needle in
+       that haystack, strstr finds it.  */
+    const char *needle = "\nwith_gnu_ld-extend-to-len-32-b\n";
+    const char *h =
+      "\n"
+      "with_build_libsubdir\n"
+      "with_local_prefix\n"
+      "with_gxx_include_dir\n"
+      "with_cpp_install_dir\n"
+      "with_e_\n"
+      "..............................\n"
+      "with_FGHIJKLMNOPQRSTUVWXYZ\n"
+      "with_567890123456789\n"
+      "with_multilib_list\n";
+    size_t h_len = strlen (h);
+    char *haystack = malloc (h_len + 1);
+    size_t i;
+    ASSERT (haystack);
+    for (i = 0; i < h_len - strlen (needle); i++)
+      {
+        const char *p;
+        memcpy (haystack, h, h_len + 1);
+        memcpy (haystack + i, needle, strlen (needle) + 1);
+        p = strstr (haystack, needle);
+        ASSERT (p);
+        ASSERT (p - haystack == i);
+      }
+    free (haystack);
+  }
+
+  /* Test long needles.  */
+  {
+    size_t m = 1024;
+    char *haystack = (char *) malloc (2 * m + 1);
+    char *needle = (char *) malloc (m + 1);
+    if (haystack != NULL && needle != NULL)
+      {
+        const char *p;
+        haystack[0] = 'x';
+        memset (haystack + 1, ' ', m - 1);
+        memset (haystack + m, 'x', m);
+        haystack[2 * m] = '\0';
+        memset (needle, 'x', m);
+        needle[m] = '\0';
+        p = strstr (haystack, needle);
+        ASSERT (p);
+        ASSERT (p - haystack == m);
+      }
+    free (needle);
+    free (haystack);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-strtoimax.c b/src/grep/gnulib-tests/test-strtoimax.c
new file mode 100644
index 0000000..3aa83c6
--- /dev/null
+++ b/src/grep/gnulib-tests/test-strtoimax.c
@@ -0,0 +1,181 @@
+/*
+ * Copyright (C) 2011-2021 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <inttypes.h>
+
+#include "signature.h"
+#ifndef strtoimax
+SIGNATURE_CHECK (strtoimax, intmax_t, (const char *, char **, int));
+#endif
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Subject sequence empty or invalid.  */
+  {
+    const char input[] = "";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " ";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " +";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " -";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+
+  /* Simple integer values.  */
+  {
+    const char input[] = "0";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+0";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-0";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "23";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = " 23";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+23";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-23";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == -23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+
+  /* Large integer values.  */
+  {
+    const char input[] = "2147483647";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == 2147483647);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-2147483648";
+    char *ptr;
+    intmax_t result;
+    errno = 0;
+    result = strtoimax (input, &ptr, 10);
+    ASSERT (result == -2147483647 - 1);
+    ASSERT (ptr == input + 11);
+    ASSERT (errno == 0);
+  }
+  if (sizeof (intmax_t) > sizeof (int))
+    {
+      const char input[] = "4294967295";
+      char *ptr;
+      intmax_t result;
+      errno = 0;
+      result = strtoimax (input, &ptr, 10);
+      ASSERT (result == (intmax_t) 65535 * (intmax_t) 65537);
+      ASSERT (ptr == input + 10);
+      ASSERT (errno == 0);
+    }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-strtoll.c b/src/grep/gnulib-tests/test-strtoll.c
new file mode 100644
index 0000000..5f2b193
--- /dev/null
+++ b/src/grep/gnulib-tests/test-strtoll.c
@@ -0,0 +1,243 @@
+/*
+ * Copyright (C) 2011-2021 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+#ifndef strtoll
+SIGNATURE_CHECK (strtoll, long long, (const char *, char **, int));
+#endif
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Subject sequence empty or invalid.  */
+  {
+    const char input[] = "";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " ";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " +";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " -";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+
+  /* Simple integer values.  */
+  {
+    const char input[] = "0";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+0";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-0";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "23";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = " 23";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+23";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-23";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == -23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+
+  /* Large integer values.  */
+  {
+    const char input[] = "2147483647";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 2147483647);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-2147483648";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == -2147483647 - 1);
+    ASSERT (ptr == input + 11);
+    ASSERT (errno == 0);
+  }
+  if (sizeof (long long) > sizeof (int))
+    {
+      const char input[] = "4294967295";
+      char *ptr;
+      long long result;
+      errno = 0;
+      result = strtoll (input, &ptr, 10);
+      ASSERT (result == 65535LL * 65537LL);
+      ASSERT (ptr == input + 10);
+      ASSERT (errno == 0);
+    }
+
+  /* Hexadecimal integer syntax.  */
+  {
+    const char input[] = "0x2A";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0LL);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x2A";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 16);
+    ASSERT (result == 42LL);
+    ASSERT (ptr == input + 4);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x2A";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 0);
+    ASSERT (result == 42LL);
+    ASSERT (ptr == input + 4);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 10);
+    ASSERT (result == 0LL);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 16);
+    ASSERT (result == 0LL);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x";
+    char *ptr;
+    long long result;
+    errno = 0;
+    result = strtoll (input, &ptr, 0);
+    ASSERT (result == 0LL);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-strtoull.c b/src/grep/gnulib-tests/test-strtoull.c
new file mode 100644
index 0000000..db7b371
--- /dev/null
+++ b/src/grep/gnulib-tests/test-strtoull.c
@@ -0,0 +1,242 @@
+/*
+ * Copyright (C) 2011-2021 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+#ifndef strtoull
+SIGNATURE_CHECK (strtoull, unsigned long long, (const char *, char **, int));
+#endif
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Subject sequence empty or invalid.  */
+  {
+    const char input[] = "";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " ";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " +";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " -";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+
+  /* Simple integer values.  */
+  {
+    const char input[] = "0";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+0";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-0";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "23";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = " 23";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+23";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-23";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == - 23ULL);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+
+  /* Large integer values.  */
+  {
+    const char input[] = "2147483647";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 2147483647);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-2147483648";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == - 2147483648ULL);
+    ASSERT (ptr == input + 11);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "4294967295";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 4294967295U);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+
+  /* Hexadecimal integer syntax.  */
+  {
+    const char input[] = "0x2A";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0ULL);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x2A";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 16);
+    ASSERT (result == 42ULL);
+    ASSERT (ptr == input + 4);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x2A";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 0);
+    ASSERT (result == 42ULL);
+    ASSERT (ptr == input + 4);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 10);
+    ASSERT (result == 0ULL);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 16);
+    ASSERT (result == 0ULL);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "0x";
+    char *ptr;
+    unsigned long long result;
+    errno = 0;
+    result = strtoull (input, &ptr, 0);
+    ASSERT (result == 0ULL);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-strtoumax.c b/src/grep/gnulib-tests/test-strtoumax.c
new file mode 100644
index 0000000..8c16ea4
--- /dev/null
+++ b/src/grep/gnulib-tests/test-strtoumax.c
@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2011-2021 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <inttypes.h>
+
+#include "signature.h"
+#ifndef strtoumax
+SIGNATURE_CHECK (strtoumax, uintmax_t, (const char *, char **, int));
+#endif
+
+#include <errno.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  /* Subject sequence empty or invalid.  */
+  {
+    const char input[] = "";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " ";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " +";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+  {
+    const char input[] = " -";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input);
+    ASSERT (errno == 0 || errno == EINVAL);
+  }
+
+  /* Simple integer values.  */
+  {
+    const char input[] = "0";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 1);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+0";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-0";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 0);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "23";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 2);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = " 23";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "+23";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-23";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == - (uintmax_t) 23);
+    ASSERT (ptr == input + 3);
+    ASSERT (errno == 0);
+  }
+
+  /* Large integer values.  */
+  {
+    const char input[] = "2147483647";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 2147483647);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "-2147483648";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == - (uintmax_t) 2147483648U);
+    ASSERT (ptr == input + 11);
+    ASSERT (errno == 0);
+  }
+  {
+    const char input[] = "4294967295";
+    char *ptr;
+    uintmax_t result;
+    errno = 0;
+    result = strtoumax (input, &ptr, 10);
+    ASSERT (result == 4294967295U);
+    ASSERT (ptr == input + 10);
+    ASSERT (errno == 0);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-symlink.c b/src/grep/gnulib-tests/test-symlink.c
new file mode 100644
index 0000000..95a3fbf
--- /dev/null
+++ b/src/grep/gnulib-tests/test-symlink.c
@@ -0,0 +1,47 @@
+/* Tests of symlink.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (symlink, int, (char const *, char const *));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+#include "ignore-value.h"
+#include "macros.h"
+
+#define BASE "test-symlink.t"
+
+#include "test-symlink.h"
+
+int
+main (void)
+{
+  /* Remove any leftovers from a previous partial run.  */
+  ignore_value (system ("rm -rf " BASE "*"));
+
+  return test_symlink (symlink, true);
+}
diff --git a/src/grep/gnulib-tests/test-symlink.h b/src/grep/gnulib-tests/test-symlink.h
new file mode 100644
index 0000000..3128d0a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-symlink.h
@@ -0,0 +1,96 @@
+/* Tests of symlink.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+/* This file is designed to test both symlink(a,b) and
+   symlinkat(a,AT_FDCWD,b).  FUNC is the function to test.  Assumes
+   that BASE and ASSERT are already defined, and that appropriate
+   headers are already included.  If PRINT, warn before skipping
+   symlink tests with status 77.  */
+
+static int
+test_symlink (int (*func) (char const *, char const *), bool print)
+{
+  if (func ("nowhere", BASE "link1"))
+    {
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+
+  /* Some systems allow the creation of 0-length symlinks as a synonym
+     for "."; but most reject it.  */
+  {
+    int status;
+    errno = 0;
+    status = func ("", BASE "link2");
+    if (status == -1)
+      ASSERT (errno == ENOENT || errno == EINVAL);
+    else
+      {
+        ASSERT (status == 0);
+        ASSERT (unlink (BASE "link2") == 0);
+      }
+  }
+
+  /* Sanity checks of failures.  */
+  errno = 0;
+  ASSERT (func ("nowhere", "") == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("nowhere", ".") == -1);
+  ASSERT (errno == EEXIST || errno == EINVAL);
+  errno = 0;
+  ASSERT (func ("somewhere", BASE "link1") == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (func ("nowhere", BASE "link2/") == -1);
+  ASSERT (errno == ENOTDIR || errno == ENOENT);
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  errno = 0;
+  ASSERT (func ("nowhere", BASE "dir") == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (func ("nowhere", BASE "dir/") == -1);
+  ASSERT (errno == EEXIST || errno == EINVAL
+          || errno == ENOENT /* Lustre FS on Linux */);
+  ASSERT (close (creat (BASE "file", 0600)) == 0);
+  errno = 0;
+  ASSERT (func ("nowhere", BASE "file") == -1);
+  ASSERT (errno == EEXIST);
+  errno = 0;
+  ASSERT (func ("nowhere", BASE "file/") == -1);
+  ASSERT (errno == EEXIST || errno == ENOTDIR || errno == ENOENT);
+
+  /* Trailing slash must always be rejected.  */
+  ASSERT (unlink (BASE "link1") == 0);
+  ASSERT (func (BASE "link2", BASE "link1") == 0);
+  errno = 0;
+  ASSERT (func (BASE "nowhere", BASE "link1/") == -1);
+  ASSERT (errno == EEXIST || errno == ENOTDIR || errno == ENOENT);
+  errno = 0;
+  ASSERT (unlink (BASE "link2") == -1);
+  ASSERT (errno == ENOENT);
+
+  /* Cleanup.  */
+  ASSERT (rmdir (BASE "dir") == 0);
+  ASSERT (unlink (BASE "file") == 0);
+  ASSERT (unlink (BASE "link1") == 0);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-sys_ioctl.c b/src/grep/gnulib-tests/test-sys_ioctl.c
new file mode 100644
index 0000000..151bf31
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sys_ioctl.c
@@ -0,0 +1,27 @@
+/* Test of <sys/ioctl.h> substitute.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <sys/ioctl.h>
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-sys_select.c b/src/grep/gnulib-tests/test-sys_select.c
new file mode 100644
index 0000000..48667ce
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sys_select.c
@@ -0,0 +1,59 @@
+/* Test of <sys/select.h> substitute.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <sys/select.h>
+
+#include "signature.h"
+
+/* The following may be macros without underlying functions, so only
+   check signature if they are not macros.  */
+#ifndef FD_CLR
+SIGNATURE_CHECK (FD_CLR, void, (int, fd_set *));
+#endif
+#ifndef FD_ISSET
+SIGNATURE_CHECK (FD_ISSET, void, (int, fd_set *));
+#endif
+#ifndef FD_SET
+SIGNATURE_CHECK (FD_SET, int, (int, fd_set *));
+#endif
+#ifndef FD_ZERO
+SIGNATURE_CHECK (FD_ZERO, void, (fd_set *));
+#endif
+
+/* Check that the 'struct timeval' type is defined.  */
+struct timeval a;
+
+/* Check that a.tv_sec is wide enough to hold a time_t, ignoring
+   signedness issues.  */
+typedef int verify_tv_sec_type[sizeof (time_t) <= sizeof (a.tv_sec) ? 1 : -1];
+
+/* Check that sigset_t is defined.  */
+sigset_t t2;
+
+int
+main (void)
+{
+  /* Check that FD_ZERO can be used.  This should not yield a warning
+     such as "warning: implicit declaration of function 'memset'".  */
+  fd_set fds;
+  FD_ZERO (&fds);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-sys_socket.c b/src/grep/gnulib-tests/test-sys_socket.c
new file mode 100644
index 0000000..49f4958
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sys_socket.c
@@ -0,0 +1,68 @@
+/* Test of <sys/socket.h> substitute.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include <errno.h>
+
+#if HAVE_SHUTDOWN
+/* Check some integer constant expressions.  */
+int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };
+#endif
+
+/* Check that the 'socklen_t' type is defined.  */
+socklen_t t1;
+
+/* Check that the 'size_t' and 'ssize_t' types are defined.  */
+size_t t2;
+ssize_t t3;
+
+/* Check that 'struct iovec' is defined.  */
+struct iovec io;
+
+/* Check that a minimal set of 'struct msghdr' is defined.  */
+struct msghdr msg;
+
+int
+main (void)
+{
+  struct sockaddr_storage x;
+  sa_family_t i;
+
+  /* Check some errno values.  */
+  switch (ENOTSOCK)
+    {
+    case ENOTSOCK:
+    case EADDRINUSE:
+    case ENETRESET:
+    case ECONNABORTED:
+    case ECONNRESET:
+    case ENOTCONN:
+    case ESHUTDOWN:
+      break;
+    }
+
+  x.ss_family = 42;
+  i = 42;
+  msg.msg_iov = &io;
+
+  return (x.ss_family - i + msg.msg_namelen + msg.msg_iov->iov_len
+          + msg.msg_iovlen);
+}
diff --git a/src/grep/gnulib-tests/test-sys_stat.c b/src/grep/gnulib-tests/test-sys_stat.c
new file mode 100644
index 0000000..e5f88c0
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sys_stat.c
@@ -0,0 +1,340 @@
+/* Test of <sys/stat.h> substitute.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "verify.h"
+
+/* Check the existence of some macros.  */
+int a[] =
+  {
+    S_IFMT,
+#ifdef S_IFBLK /* missing on MSVC */
+    S_IFBLK,
+#endif
+    S_IFCHR, S_IFDIR, S_IFIFO, S_IFREG,
+#ifdef S_IFLNK /* missing on native Windows and DJGPP */
+    S_IFLNK,
+#endif
+#ifdef S_IFSOCK /* missing on native Windows and DJGPP */
+    S_IFSOCK,
+#endif
+    S_IRWXU, S_IRUSR, S_IWUSR, S_IXUSR,
+    S_IRWXG, S_IRGRP, S_IWGRP, S_IXGRP,
+    S_IRWXO, S_IROTH, S_IWOTH, S_IXOTH,
+    S_ISUID, S_ISGID, S_ISVTX,
+    S_ISBLK (S_IFREG),
+    S_ISCHR (S_IFREG),
+    S_ISDIR (S_IFREG),
+    S_ISFIFO (S_IFREG),
+    S_ISREG (S_IFREG),
+    S_ISLNK (S_IFREG),
+    S_ISSOCK (S_IFREG),
+    S_ISDOOR (S_IFREG),
+    S_ISMPB (S_IFREG),
+    S_ISMPX (S_IFREG),
+    S_ISNAM (S_IFREG),
+    S_ISNWK (S_IFREG),
+    S_ISPORT (S_IFREG),
+    S_ISCTG (S_IFREG),
+    S_ISOFD (S_IFREG),
+    S_ISOFL (S_IFREG),
+    S_ISWHT (S_IFREG)
+  };
+
+/* Sanity checks.  */
+
+verify (S_IRWXU == (S_IRUSR | S_IWUSR | S_IXUSR));
+verify (S_IRWXG == (S_IRGRP | S_IWGRP | S_IXGRP));
+verify (S_IRWXO == (S_IROTH | S_IWOTH | S_IXOTH));
+
+#ifdef S_IFBLK
+verify (S_ISBLK (S_IFBLK));
+#endif
+verify (!S_ISBLK (S_IFCHR));
+verify (!S_ISBLK (S_IFDIR));
+verify (!S_ISBLK (S_IFIFO));
+verify (!S_ISBLK (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISBLK (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISBLK (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISCHR (S_IFBLK));
+#endif
+verify (S_ISCHR (S_IFCHR));
+verify (!S_ISCHR (S_IFDIR));
+verify (!S_ISCHR (S_IFIFO));
+verify (!S_ISCHR (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISCHR (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISCHR (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISDIR (S_IFBLK));
+#endif
+verify (!S_ISDIR (S_IFCHR));
+verify (S_ISDIR (S_IFDIR));
+verify (!S_ISDIR (S_IFIFO));
+verify (!S_ISDIR (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISDIR (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISDIR (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISFIFO (S_IFBLK));
+#endif
+verify (!S_ISFIFO (S_IFCHR));
+verify (!S_ISFIFO (S_IFDIR));
+verify (S_ISFIFO (S_IFIFO));
+verify (!S_ISFIFO (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISFIFO (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISFIFO (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISREG (S_IFBLK));
+#endif
+verify (!S_ISREG (S_IFCHR));
+verify (!S_ISREG (S_IFDIR));
+verify (!S_ISREG (S_IFIFO));
+verify (S_ISREG (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISREG (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISREG (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISLNK (S_IFBLK));
+#endif
+verify (!S_ISLNK (S_IFCHR));
+verify (!S_ISLNK (S_IFDIR));
+verify (!S_ISLNK (S_IFIFO));
+verify (!S_ISLNK (S_IFREG));
+#ifdef S_IFLNK
+verify (S_ISLNK (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISLNK (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISSOCK (S_IFBLK));
+#endif
+verify (!S_ISSOCK (S_IFCHR));
+verify (!S_ISSOCK (S_IFDIR));
+verify (!S_ISSOCK (S_IFIFO));
+verify (!S_ISSOCK (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISSOCK (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (S_ISSOCK (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISDOOR (S_IFBLK));
+#endif
+verify (!S_ISDOOR (S_IFCHR));
+verify (!S_ISDOOR (S_IFDIR));
+verify (!S_ISDOOR (S_IFIFO));
+verify (!S_ISDOOR (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISDOOR (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISDOOR (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISMPB (S_IFBLK));
+#endif
+verify (!S_ISMPB (S_IFCHR));
+verify (!S_ISMPB (S_IFDIR));
+verify (!S_ISMPB (S_IFIFO));
+verify (!S_ISMPB (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISMPB (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISMPB (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISMPX (S_IFBLK));
+#endif
+verify (!S_ISMPX (S_IFCHR));
+verify (!S_ISMPX (S_IFDIR));
+verify (!S_ISMPX (S_IFIFO));
+verify (!S_ISMPX (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISMPX (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISMPX (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISNAM (S_IFBLK));
+#endif
+verify (!S_ISNAM (S_IFCHR));
+verify (!S_ISNAM (S_IFDIR));
+verify (!S_ISNAM (S_IFIFO));
+verify (!S_ISNAM (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISNAM (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISNAM (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISNWK (S_IFBLK));
+#endif
+verify (!S_ISNWK (S_IFCHR));
+verify (!S_ISNWK (S_IFDIR));
+verify (!S_ISNWK (S_IFIFO));
+verify (!S_ISNWK (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISNWK (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISNWK (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISPORT (S_IFBLK));
+#endif
+verify (!S_ISPORT (S_IFCHR));
+verify (!S_ISPORT (S_IFDIR));
+verify (!S_ISPORT (S_IFIFO));
+verify (!S_ISPORT (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISPORT (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISPORT (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISCTG (S_IFBLK));
+#endif
+verify (!S_ISCTG (S_IFCHR));
+verify (!S_ISCTG (S_IFDIR));
+verify (!S_ISCTG (S_IFIFO));
+verify (!S_ISCTG (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISCTG (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISCTG (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISOFD (S_IFBLK));
+#endif
+verify (!S_ISOFD (S_IFCHR));
+verify (!S_ISOFD (S_IFDIR));
+verify (!S_ISOFD (S_IFIFO));
+verify (!S_ISOFD (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISOFD (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISOFD (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISOFL (S_IFBLK));
+#endif
+verify (!S_ISOFL (S_IFCHR));
+verify (!S_ISOFL (S_IFDIR));
+verify (!S_ISOFL (S_IFIFO));
+verify (!S_ISOFL (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISOFL (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISOFL (S_IFSOCK));
+#endif
+
+#ifdef S_IFBLK
+verify (!S_ISWHT (S_IFBLK));
+#endif
+verify (!S_ISWHT (S_IFCHR));
+verify (!S_ISWHT (S_IFDIR));
+verify (!S_ISWHT (S_IFIFO));
+verify (!S_ISWHT (S_IFREG));
+#ifdef S_IFLNK
+verify (!S_ISWHT (S_IFLNK));
+#endif
+#ifdef S_IFSOCK
+verify (!S_ISWHT (S_IFSOCK));
+#endif
+
+/* POSIX 2008 requires traditional encoding of permission constants.  */
+verify (S_IRWXU == 00700);
+verify (S_IRUSR == 00400);
+verify (S_IWUSR == 00200);
+verify (S_IXUSR == 00100);
+verify (S_IRWXG == 00070);
+verify (S_IRGRP == 00040);
+verify (S_IWGRP == 00020);
+verify (S_IXGRP == 00010);
+verify (S_IRWXO == 00007);
+verify (S_IROTH == 00004);
+verify (S_IWOTH == 00002);
+verify (S_IXOTH == 00001);
+verify (S_ISUID == 04000);
+verify (S_ISGID == 02000);
+verify (S_ISVTX == 01000);
+
+#if ((0 <= UTIME_NOW && UTIME_NOW < 1000000000)           \
+     || (0 <= UTIME_OMIT && UTIME_OMIT < 1000000000)      \
+     || UTIME_NOW == UTIME_OMIT)
+invalid UTIME macros
+#endif
+
+/* Check the existence of some types.  */
+nlink_t t1;
+off_t t2;
+mode_t t3;
+
+struct timespec st;
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-sys_time.c b/src/grep/gnulib-tests/test-sys_time.c
new file mode 100644
index 0000000..764321b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sys_time.c
@@ -0,0 +1,34 @@
+/* Test of <sys/time.h> substitute.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <sys/time.h>
+
+/* Check that the 'struct timeval' type is defined.  */
+struct timeval a;
+
+/* Check that a.tv_sec is wide enough to hold a time_t, ignoring
+   signedness issues.  */
+typedef int verify_tv_sec_type[sizeof (time_t) <= sizeof (a.tv_sec) ? 1 : -1];
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-sys_types.c b/src/grep/gnulib-tests/test-sys_types.c
new file mode 100644
index 0000000..a0bcc04
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sys_types.c
@@ -0,0 +1,34 @@
+/* Test of <sys/types.h> substitute.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include <sys/types.h>
+
+/* Check that the types are all defined.  */
+pid_t t1;
+size_t t2;
+ssize_t t3;
+off_t t4;
+mode_t t5;
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-sys_uio.c b/src/grep/gnulib-tests/test-sys_uio.c
new file mode 100644
index 0000000..723f36b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sys_uio.c
@@ -0,0 +1,32 @@
+/* Test of <sys/uio.h> substitute.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <eblake@redhat.com>, 2011.  */
+
+#include <config.h>
+
+#include <sys/uio.h>
+
+/* Check that necessary types are defined.  */
+size_t a;
+ssize_t b;
+struct iovec c;
+
+int
+main (void)
+{
+  return a + b + !!c.iov_base + c.iov_len;
+}
diff --git a/src/grep/gnulib-tests/test-sys_wait.h b/src/grep/gnulib-tests/test-sys_wait.h
new file mode 100644
index 0000000..4508f57
--- /dev/null
+++ b/src/grep/gnulib-tests/test-sys_wait.h
@@ -0,0 +1,53 @@
+/* Test of macros shared between <sys/wait.h> and <stdlib.h>.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2010.  */
+
+static int
+test_sys_wait_macros (void)
+{
+  /* Check subset of <sys/wait.h> macros that must be visible here.
+     Note that some of these macros are only portable when operating
+     on an lvalue.  */
+  int i;
+  for (i = 0; i < 0x8000; i = (i ? i << 1 : 1))
+    {
+      /* POSIX requires that for all valid process statuses, that
+         exactly one of these three macros is true.  But not all
+         possible 16-bit values map to valid process status.
+         Traditionally, 8 of the bits are for WIFEXITED, 7 of the bits
+         to tell between WIFSIGNALED and WIFSTOPPED, and either 0x80
+         or 0x8000 to flag that core was also dumped.  Since we don't
+         know which byte is WIFEXITED, we skip the both possible bits
+         that can signal core dump.  */
+      if (i == 0x80)
+        continue;
+      if (!!WIFSIGNALED (i) + !!WIFEXITED (i) + !!WIFSTOPPED (i) != 1)
+        return 1;
+    }
+  i = WEXITSTATUS (i) + WSTOPSIG (i) + WTERMSIG (i);
+
+  switch (i)
+    {
+#if 0
+  /* Gnulib doesn't guarantee these, yet.  */
+    case WNOHANG:
+    case WUNTRACED:
+#endif
+      break;
+    }
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-thread_create.c b/src/grep/gnulib-tests/test-thread_create.c
new file mode 100644
index 0000000..f4213d4
--- /dev/null
+++ b/src/grep/gnulib-tests/test-thread_create.c
@@ -0,0 +1,78 @@
+/* Test of gl_thread_create () macro.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include "glthread/thread.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "macros.h"
+
+static gl_thread_t main_thread_before;
+static gl_thread_t main_thread_after;
+static gl_thread_t worker_thread;
+
+static int dummy;
+static volatile int work_done;
+
+static void *
+worker_thread_func (void *arg)
+{
+  work_done = 1;
+  return &dummy;
+}
+
+int
+main ()
+{
+  main_thread_before = gl_thread_self ();
+
+  if (glthread_create (&worker_thread, worker_thread_func, NULL) == 0)
+    {
+      void *ret;
+
+      /* Check that gl_thread_self () has the same value before than after the
+         first call to gl_thread_create ().  */
+      main_thread_after = gl_thread_self ();
+      ASSERT (memcmp (&main_thread_before, &main_thread_after,
+                      sizeof (gl_thread_t))
+              == 0);
+
+      gl_thread_join (worker_thread, &ret);
+
+      /* Check the return value of the thread.  */
+      ASSERT (ret == &dummy);
+
+      /* Check that worker_thread_func () has finished executing.  */
+      ASSERT (work_done);
+
+      return 0;
+    }
+  else
+    {
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+      fputs ("glthread_create failed\n", stderr);
+      return 1;
+#else
+      fputs ("Skipping test: multithreading not enabled\n", stderr);
+      return 77;
+#endif
+    }
+}
diff --git a/src/grep/gnulib-tests/test-thread_self.c b/src/grep/gnulib-tests/test-thread_self.c
new file mode 100644
index 0000000..69d876d
--- /dev/null
+++ b/src/grep/gnulib-tests/test-thread_self.c
@@ -0,0 +1,39 @@
+/* Test of gl_thread_self () macro.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
+
+#include <config.h>
+
+#include "glthread/thread.h"
+
+gl_thread_t main_thread;
+
+int
+main ()
+{
+  /* Check that gl_thread_self () can be used with just $(LIBTHREAD), not
+     $(LIBMULTITHREAD), i.e. in libraries that are multithread-safe but don't
+     create threads themselves.  */
+  /* This is not the case on AIX with --enable-threads=isoc+posix, because in
+     this case, $(LIBTHREAD) is empty whereas $(LIBMULTITHREAD) is '-lpthread'.
+   */
+#if !defined _AIX
+  main_thread = gl_thread_self ();
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-time.c b/src/grep/gnulib-tests/test-time.c
new file mode 100644
index 0000000..e5a4522
--- /dev/null
+++ b/src/grep/gnulib-tests/test-time.c
@@ -0,0 +1,45 @@
+/* Test of <time.h> substitute.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <time.h>
+
+#include "verify.h"
+
+/* Check that the types are all defined.  */
+struct timespec t1;
+#if 0
+/* POSIX:2008 does not require pid_t in <time.h> unconditionally, and indeed
+   it's missing on Mac OS X 10.5, FreeBSD 6.4, OpenBSD 4.9, mingw.  */
+pid_t t2;
+#endif
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+/* Check that TIME_UTC is defined and a positive integer.  */
+int t3 = TIME_UTC;
+verify (TIME_UTC > 0);
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-unistd.c b/src/grep/gnulib-tests/test-unistd.c
new file mode 100644
index 0000000..ca7422c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-unistd.c
@@ -0,0 +1,56 @@
+/* Test of <unistd.h> substitute.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "verify.h"
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+/* Check that the various SEEK_* macros are defined.  */
+int sk[] = { SEEK_CUR, SEEK_END, SEEK_SET };
+
+/* Check that the various *_FILENO macros are defined.  */
+#if ! (defined STDIN_FILENO                                     \
+       && (STDIN_FILENO + STDOUT_FILENO + STDERR_FILENO == 3))
+missing or broken *_FILENO macros
+#endif
+
+/* Check that the types are all defined.  */
+size_t t1;
+ssize_t t2;
+#ifdef TODO /* Not implemented in gnulib yet */
+uid_t t3;
+gid_t t4;
+#endif
+off_t t5;
+pid_t t6;
+#ifdef TODO
+useconds_t t7;
+intptr_t t8;
+#endif
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-unsetenv.c b/src/grep/gnulib-tests/test-unsetenv.c
new file mode 100644
index 0000000..e61fbbc
--- /dev/null
+++ b/src/grep/gnulib-tests/test-unsetenv.c
@@ -0,0 +1,61 @@
+/* Tests of unsetenv.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (unsetenv, int, (char const *));
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+  char entry[] = "b=2";
+
+  /* Test removal when multiple entries present.  */
+  ASSERT (putenv ((char *) "a=1") == 0);
+  ASSERT (putenv (entry) == 0);
+  entry[0] = 'a'; /* Unspecified what getenv("a") would be at this point.  */
+  ASSERT (unsetenv ("a") == 0); /* Both entries will be removed.  */
+  ASSERT (getenv ("a") == NULL);
+  ASSERT (unsetenv ("a") == 0);
+
+  /* Required to fail with EINVAL.  */
+  errno = 0;
+  ASSERT (unsetenv ("") == -1);
+  ASSERT (errno == EINVAL);
+  errno = 0;
+  ASSERT (unsetenv ("a=b") == -1);
+  ASSERT (errno == EINVAL);
+#if 0
+  /* glibc and gnulib's implementation guarantee this, but POSIX no
+     longer requires it: http://austingroupbugs.net/view.php?id=185  */
+  errno = 0;
+  ASSERT (unsetenv (NULL) == -1);
+  ASSERT (errno == EINVAL);
+#endif
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-vasnprintf.c b/src/grep/gnulib-tests/test-vasnprintf.c
new file mode 100644
index 0000000..9d99743
--- /dev/null
+++ b/src/grep/gnulib-tests/test-vasnprintf.c
@@ -0,0 +1,121 @@
+/* Test of vasnprintf() and asnprintf() functions.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "vasnprintf.h"
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+static void
+test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
+{
+  char buf[8];
+  int size;
+
+  for (size = 0; size <= 8; size++)
+    {
+      size_t length = size;
+      char *result = my_asnprintf (NULL, &length, "%d", 12345);
+      ASSERT (result != NULL);
+      ASSERT (strcmp (result, "12345") == 0);
+      ASSERT (length == 5);
+      free (result);
+    }
+
+  for (size = 0; size <= 8; size++)
+    {
+      size_t length;
+      char *result;
+
+      memcpy (buf, "DEADBEEF", 8);
+      length = size;
+      result = my_asnprintf (buf, &length, "%d", 12345);
+      ASSERT (result != NULL);
+      ASSERT (strcmp (result, "12345") == 0);
+      ASSERT (length == 5);
+      if (size < 5 + 1)
+        ASSERT (result != buf);
+      ASSERT (memcmp (buf + size, &"DEADBEEF"[size], 8 - size) == 0);
+      if (result != buf)
+        free (result);
+    }
+
+  /* Note: This test assumes IEEE 754 representation of 'double' floats.  */
+  for (size = 0; size <= 8; size++)
+    {
+      size_t length;
+      char *result;
+
+      memcpy (buf, "DEADBEEF", 8);
+      length = size;
+      result = my_asnprintf (buf, &length, "%2.0f", 1.6314159265358979e+125);
+      ASSERT (result != NULL);
+      /* The exact result and the result on glibc systems is
+         163141592653589790215729350939528493057529598899734151772468186268423257777068536614838678161083520756952076273094236944990208
+         On Cygwin, the result is
+         163141592653589790215729350939528493057529600000000000000000000000000000000000000000000000000000000000000000000000000000000000
+         On HP-UX 11.31 / hppa and IRIX 6.5, the result is
+         163141592653589790000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+       */
+      ASSERT (strlen (result) == 126);
+      ASSERT (memcmp (result, "163141592653589790", 18) == 0);
+      ASSERT (length == 126);
+      if (size < 126 + 1)
+        ASSERT (result != buf);
+      ASSERT (memcmp (buf + size, &"DEADBEEF"[size], 8 - size) == 0);
+      if (result != buf)
+        free (result);
+    }
+}
+
+static char *
+my_asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...)
+{
+  va_list args;
+  char *ret;
+
+  va_start (args, format);
+  ret = vasnprintf (resultbuf, lengthp, format, args);
+  va_end (args);
+  return ret;
+}
+
+static void
+test_vasnprintf ()
+{
+  test_function (my_asnprintf);
+}
+
+static void
+test_asnprintf ()
+{
+  test_function (asnprintf);
+}
+
+int
+main (int argc, char *argv[])
+{
+  test_vasnprintf ();
+  test_asnprintf ();
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-vc-list-files-cvs.sh b/src/grep/gnulib-tests/test-vc-list-files-cvs.sh
new file mode 100755
index 0000000..3a7e1c5
--- /dev/null
+++ b/src/grep/gnulib-tests/test-vc-list-files-cvs.sh
@@ -0,0 +1,53 @@
+#!/bin/sh
+# Unit tests for vc-list-files
+# Copyright (C) 2008-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+tmpdir=vc-cvs
+repo=`pwd`/$tmpdir/repo
+
+fail=0
+for i in with-cvsu without; do
+  # On the first iteration, test using cvsu, if it's in your path.
+  # On the second iteration, ensure that cvsu fails, so we'll
+  # exercise the awk-using code.
+  if test $i = without; then
+    printf '%s\n' '#!/bin/sh' 'exit 1' > cvsu
+    chmod a+x cvsu
+    PATH=`pwd`:$PATH
+    export PATH
+  fi
+  ok=0
+  mkdir $tmpdir && cd $tmpdir &&
+    # without cvs, skip the test
+    { ( cvs -Q -d "$repo" init ) > /dev/null 2>&1 \
+      || skip_ "cvs not found in PATH"; } &&
+    mkdir w && cd w &&
+    mkdir d &&
+    touch d/a b c &&
+    cvs -Q -d "$repo" import -m imp m M M0 &&
+    cvs -Q -d "$repo" co m && cd m &&
+    printf '%s\n' b c d/a > expected &&
+    $BOURNE_SHELL "$abs_aux_dir/vc-list-files" | sort > actual &&
+    compare expected actual &&
+    ok=1
+  test $ok = 0 && fail=1
+done
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-vc-list-files-git.sh b/src/grep/gnulib-tests/test-vc-list-files-git.sh
new file mode 100755
index 0000000..3359ffb
--- /dev/null
+++ b/src/grep/gnulib-tests/test-vc-list-files-git.sh
@@ -0,0 +1,42 @@
+#!/bin/sh
+# Unit tests for vc-list-files
+# Copyright (C) 2008-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+tmpdir=vc-git-$$
+GIT_DIR= GIT_WORK_TREE=; unset GIT_DIR GIT_WORK_TREE
+
+fail=1
+mkdir $tmpdir && cd $tmpdir &&
+  # without git, skip the test
+  # The double use of 'exit' is needed for the reference to $? inside the trap.
+  { ( git init -q ) > /dev/null 2>&1 \
+    || skip_ "git not found in PATH"; } &&
+  mkdir d &&
+  touch d/a b c &&
+  git config user.email "you@example.com" &&
+  git config user.name "Your Name" &&
+  git add . > /dev/null &&
+  git commit -q -a -m log &&
+  printf '%s\n' b c d/a > expected &&
+  $BOURNE_SHELL "$abs_aux_dir/vc-list-files" > actual &&
+  compare expected actual &&
+  fail=0
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-verify-try.c b/src/grep/gnulib-tests/test-verify-try.c
new file mode 100644
index 0000000..e97ea2a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-verify-try.c
@@ -0,0 +1,21 @@
+/* Test the "verify" module.
+
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This is a separate source file, so that the execution of test-verify.sh
+   does not interfere with the building of the 'test-verify' program.  */
+
+#include "test-verify.c"
diff --git a/src/grep/gnulib-tests/test-verify.c b/src/grep/gnulib-tests/test-verify.c
new file mode 100644
index 0000000..65b926a
--- /dev/null
+++ b/src/grep/gnulib-tests/test-verify.c
@@ -0,0 +1,119 @@
+/* Test the "verify" module.
+
+   Copyright (C) 2005, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible.  */
+
+#include <config.h>
+
+#include "verify.h"
+
+#ifndef EXP_FAIL
+# define EXP_FAIL 0
+#endif
+
+/* ======================= Test verify, verify_expr ======================= */
+
+int gx;
+enum { A, B, C };
+
+#if EXP_FAIL == 1
+verify (gx >= 0);                 /* should give ERROR: non-constant expression */
+#endif
+verify (C == 2);                  /* should be ok */
+#if EXP_FAIL == 2
+verify (1 + 1 == 3);              /* should give ERROR */
+#endif
+verify (1 == 1); verify (1 == 1); /* should be ok */
+
+enum
+{
+  item = verify_expr (1 == 1, 10 * 0 + 17) /* should be ok */
+};
+
+static int
+function (int n)
+{
+#if EXP_FAIL == 3
+  verify (n >= 0);                  /* should give ERROR: non-constant expression */
+#endif
+  verify (C == 2);                  /* should be ok */
+#if EXP_FAIL == 4
+  verify (1 + 1 == 3);              /* should give ERROR */
+#endif
+  verify (1 == 1); verify (1 == 1); /* should be ok */
+
+  if (n)
+    return ((void) verify_expr (1 == 1, 1), verify_expr (1 == 1, 8)); /* should be ok */
+#if EXP_FAIL == 5
+  return verify_expr (1 == 2, 5); /* should give ERROR */
+#endif
+  return 0;
+}
+
+/* ============================== Test assume ============================== */
+
+static int
+f (int a)
+{
+  return a;
+}
+
+typedef struct { unsigned int context : 4; unsigned int halt : 1; } state;
+
+void test_assume_expressions (state *s);
+int test_assume_optimization (int x);
+_Noreturn void test_assume_noreturn (void);
+
+void
+test_assume_expressions (state *s)
+{
+  /* Check that 'assume' accepts a function call, even of a non-const
+     function.  */
+  assume (f (1));
+  /* Check that 'assume' accepts a bit-field expression.  */
+  assume (s->halt);
+}
+
+int
+test_assume_optimization (int x)
+{
+  /* Check that the compiler uses 'assume' for optimization.
+     This function, when compiled with optimization, should have code
+     equivalent to
+       return x + 3;
+     Use 'objdump --disassemble test-verify.o' to verify this.  */
+  assume (x >= 4);
+  return (x > 1 ? x + 3 : 2 * x + 10);
+}
+
+_Noreturn void
+test_assume_noreturn (void)
+{
+  /* Check that the compiler's data-flow analysis recognizes 'assume (0)'.
+     This function should not elicit a warning.  */
+  assume (0);
+}
+
+/* ============================== Main ===================================== */
+int
+main (void)
+{
+  state s = { 0, 1 };
+  test_assume_expressions (&s);
+  test_assume_optimization (5);
+  return !(function (0) == 0 && function (1) == 8);
+}
diff --git a/src/grep/gnulib-tests/test-verify.sh b/src/grep/gnulib-tests/test-verify.sh
new file mode 100755
index 0000000..1e75d55
--- /dev/null
+++ b/src/grep/gnulib-tests/test-verify.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+. "${srcdir=.}/init.sh"
+
+# We are not interested in triggering bugs in the compilers and tools
+# (such as gcc 4.3.1 on openSUSE 11.0).
+unset MALLOC_PERTURB_
+
+# Rather than figure out how to invoke the compiler with the right
+# include path ourselves, we let make do it:
+(cd "$initial_cwd_" \
+ && rm -f test-verify-try.o \
+ && $MAKE test-verify-try.o >/dev/null 2>&1) \
+  || skip_ "cannot compile error-free"
+
+# Now, prove that we encounter all expected compilation failures:
+: >out
+: >err
+for i in 1 2 3 4 5; do
+  (cd "$initial_cwd_"
+   rm -f test-verify-try.o
+   $MAKE CFLAGS=-DEXP_FAIL=$i test-verify-try.o) >>out 2>>err \
+  && { warn_ "compiler didn't detect verification failure $i"; fail=1; }
+done
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-version-etc.c b/src/grep/gnulib-tests/test-version-etc.c
new file mode 100644
index 0000000..a098556
--- /dev/null
+++ b/src/grep/gnulib-tests/test-version-etc.c
@@ -0,0 +1,31 @@
+/* Test suite for version-etc.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+   This file is part of the GNUlib Library.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "version-etc.h"
+
+
+#define AUTHORS "Sergey Poznyakoff", "Eric Blake"
+
+int
+main (int argc _GL_UNUSED, char **argv)
+{
+  version_etc (stdout, "test-version-etc", "dummy", "0", AUTHORS,
+               (const char *) NULL);
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-version-etc.sh b/src/grep/gnulib-tests/test-version-etc.sh
new file mode 100755
index 0000000..20b9e9b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-version-etc.sh
@@ -0,0 +1,45 @@
+#! /bin/sh
+# Test suite for version-etc.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+
+TMP=ve-expected.tmp
+LC_ALL=C
+export LC_ALL
+ERR=0
+
+cat > $TMP <<EOT
+test-version-etc (PROJECT) VERSION
+COPYRIGHT Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+
+Written by Sergey Poznyakoff and Eric Blake.
+EOT
+
+${CHECKER} test-version-etc${EXEEXT} --version |
+ sed '1s/test-version-etc (.*) .*/test-version-etc (PROJECT) VERSION/
+      /^Packaged by/d
+      2,3 s/Copyright (C) [0-9]\{4,4\}/COPYRIGHT/' |
+ tr -d '\015' |
+ compare $TMP - || ERR=1
+
+rm $TMP
+
+exit $ERR
diff --git a/src/grep/gnulib-tests/test-wchar.c b/src/grep/gnulib-tests/test-wchar.c
new file mode 100644
index 0000000..65c685c
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wchar.c
@@ -0,0 +1,37 @@
+/* Test of <wchar.h> substitute.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "verify.h"
+
+/* Check that the types wchar_t and wint_t are defined.  */
+wchar_t a = 'c';
+wint_t b = 'x';
+
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
+int
+main (void)
+{
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-wcrtomb-w32-1.sh b/src/grep/gnulib-tests/test-wcrtomb-w32-1.sh
new file mode 100755
index 0000000..b01c543
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wcrtomb-w32-1.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP1252 locale.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} French_France 1252
diff --git a/src/grep/gnulib-tests/test-wcrtomb-w32-2.sh b/src/grep/gnulib-tests/test-wcrtomb-w32-2.sh
new file mode 100755
index 0000000..5481634
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wcrtomb-w32-2.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP1256 locale.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} "Arabic_Saudi Arabia" 1256
diff --git a/src/grep/gnulib-tests/test-wcrtomb-w32-3.sh b/src/grep/gnulib-tests/test-wcrtomb-w32-3.sh
new file mode 100755
index 0000000..f35879d
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wcrtomb-w32-3.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP932 locale.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} Japanese_Japan 932
diff --git a/src/grep/gnulib-tests/test-wcrtomb-w32-4.sh b/src/grep/gnulib-tests/test-wcrtomb-w32-4.sh
new file mode 100755
index 0000000..8eec6cb
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wcrtomb-w32-4.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP950 locale.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} Chinese_Taiwan 950
diff --git a/src/grep/gnulib-tests/test-wcrtomb-w32-5.sh b/src/grep/gnulib-tests/test-wcrtomb-w32-5.sh
new file mode 100755
index 0000000..fd47d6f
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wcrtomb-w32-5.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a CP936 locale.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} Chinese_China 936
diff --git a/src/grep/gnulib-tests/test-wcrtomb-w32-6.sh b/src/grep/gnulib-tests/test-wcrtomb-w32-6.sh
new file mode 100755
index 0000000..802237d
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wcrtomb-w32-6.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test a GB18030 locale.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} Chinese_China 54936
diff --git a/src/grep/gnulib-tests/test-wcrtomb-w32-7.sh b/src/grep/gnulib-tests/test-wcrtomb-w32-7.sh
new file mode 100755
index 0000000..fb04e58
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wcrtomb-w32-7.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Test some UTF-8 locales.
+${CHECKER} ./test-wcrtomb-w32${EXEEXT} French_France Japanese_Japan Chinese_Taiwan Chinese_China 65001
diff --git a/src/grep/gnulib-tests/test-wcrtomb-w32.c b/src/grep/gnulib-tests/test-wcrtomb-w32.c
new file mode 100644
index 0000000..b354260
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wcrtomb-w32.c
@@ -0,0 +1,337 @@
+/* Test of conversion of wide character to multibyte character.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "localcharset.h"
+#include "macros.h"
+
+#if defined _WIN32 && !defined __CYGWIN__
+
+static int
+test_one_locale (const char *name, int codepage)
+{
+  char buf[64];
+  size_t ret;
+
+# if 1
+  /* Portable code to set the locale.  */
+  {
+    char name_with_codepage[1024];
+
+    sprintf (name_with_codepage, "%s.%d", name, codepage);
+
+    /* Set the locale.  */
+    if (setlocale (LC_ALL, name_with_codepage) == NULL)
+      return 77;
+  }
+# else
+  /* Hacky way to set a locale.codepage combination that setlocale() refuses
+     to set.  */
+  {
+    /* Codepage of the current locale, set with setlocale().
+       Not necessarily the same as GetACP().  */
+    extern __declspec(dllimport) unsigned int __lc_codepage;
+
+    /* Set the locale.  */
+    if (setlocale (LC_ALL, name) == NULL)
+      return 77;
+
+    /* Clobber the codepage and MB_CUR_MAX, both set by setlocale().  */
+    __lc_codepage = codepage;
+    switch (codepage)
+      {
+      case 1252:
+      case 1256:
+        MB_CUR_MAX = 1;
+        break;
+      case 932:
+      case 950:
+      case 936:
+        MB_CUR_MAX = 2;
+        break;
+      case 54936:
+      case 65001:
+        MB_CUR_MAX = 4;
+        break;
+      }
+
+    /* Test whether the codepage is really available.  */
+    {
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, " ", 1, &state) == (size_t)(-1))
+        return 77;
+    }
+  }
+# endif
+
+  /* Test NUL character.  */
+  {
+    buf[0] = 'x';
+    ret = wcrtomb (buf, 0, NULL);
+    ASSERT (ret == 1);
+    ASSERT (buf[0] == '\0');
+  }
+
+  /* Test single bytes.  */
+  {
+    int c;
+
+    for (c = 0; c < 0x100; c++)
+      switch (c)
+        {
+        case '\t': case '\v': case '\f':
+        case ' ': case '!': case '"': case '#': case '%':
+        case '&': case '\'': case '(': case ')': case '*':
+        case '+': case ',': case '-': case '.': case '/':
+        case '0': case '1': case '2': case '3': case '4':
+        case '5': case '6': case '7': case '8': case '9':
+        case ':': case ';': case '<': case '=': case '>':
+        case '?':
+        case 'A': case 'B': case 'C': case 'D': case 'E':
+        case 'F': case 'G': case 'H': case 'I': case 'J':
+        case 'K': case 'L': case 'M': case 'N': case 'O':
+        case 'P': case 'Q': case 'R': case 'S': case 'T':
+        case 'U': case 'V': case 'W': case 'X': case 'Y':
+        case 'Z':
+        case '[': case '\\': case ']': case '^': case '_':
+        case 'a': case 'b': case 'c': case 'd': case 'e':
+        case 'f': case 'g': case 'h': case 'i': case 'j':
+        case 'k': case 'l': case 'm': case 'n': case 'o':
+        case 'p': case 'q': case 'r': case 's': case 't':
+        case 'u': case 'v': case 'w': case 'x': case 'y':
+        case 'z': case '{': case '|': case '}': case '~':
+          /* c is in the ISO C "basic character set".  */
+          ret = wcrtomb (buf, btowc (c), NULL);
+          ASSERT (ret == 1);
+          ASSERT (buf[0] == (char) c);
+          break;
+        }
+  }
+
+  /* Test special calling convention, passing a NULL pointer.  */
+  {
+    ret = wcrtomb (NULL, '\0', NULL);
+    ASSERT (ret == 1);
+    ret = wcrtomb (NULL, btowc ('x'), NULL);
+    ASSERT (ret == 1);
+  }
+
+  switch (codepage)
+    {
+    case 1252:
+      /* Locale encoding is CP1252, an extension of ISO-8859-1.  */
+      {
+        /* Convert "B\374\337er": "Büßer" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x00FC, NULL);
+        ASSERT (ret == 1);
+        ASSERT (memcmp (buf, "\374", 1) == 0);
+        ASSERT (buf[1] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x00DF, NULL);
+        ASSERT (ret == 1);
+        ASSERT (memcmp (buf, "\337", 1) == 0);
+        ASSERT (buf[1] == 'x');
+      }
+      return 0;
+
+    case 1256:
+      /* Locale encoding is CP1256, not the same as ISO-8859-6.  */
+      {
+        /* Convert "x\302\341\346y": "xآلوy" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x0622, NULL);
+        ASSERT (ret == 1);
+        ASSERT (memcmp (buf, "\302", 1) == 0);
+        ASSERT (buf[1] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x0644, NULL);
+        ASSERT (ret == 1);
+        ASSERT (memcmp (buf, "\341", 1) == 0);
+        ASSERT (buf[1] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x0648, NULL);
+        ASSERT (ret == 1);
+        ASSERT (memcmp (buf, "\346", 1) == 0);
+        ASSERT (buf[1] == 'x');
+      }
+      return 0;
+
+    case 932:
+      /* Locale encoding is CP932, similar to Shift_JIS.  */
+      {
+        /* Convert "<\223\372\226\173\214\352>": "<日本語>" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x65E5, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\223\372", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x672C, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\226\173", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x8A9E, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\214\352", 2) == 0);
+        ASSERT (buf[2] == 'x');
+      }
+      return 0;
+
+    case 950:
+      /* Locale encoding is CP950, similar to Big5.  */
+      {
+        /* Convert "<\244\351\245\273\273\171>": "<日本語>" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x65E5, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\244\351", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x672C, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\245\273", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x8A9E, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\273\171", 2) == 0);
+        ASSERT (buf[2] == 'x');
+      }
+      return 0;
+
+    case 936:
+      /* Locale encoding is CP936 = GBK, an extension of GB2312.  */
+      {
+        /* Convert "<\310\325\261\276\325\132>": "<日本語>" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x65E5, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\310\325", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x672C, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\261\276", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x8A9E, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\325\132", 2) == 0);
+        ASSERT (buf[2] == 'x');
+      }
+      return 0;
+
+    case 54936:
+      /* Locale encoding is CP54936 = GB18030.  */
+      if (strcmp (locale_charset (), "GB18030") != 0)
+        return 77;
+      {
+        /* Convert "B\250\271\201\060\211\070er": "Büßer" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x00FC, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\250\271", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x00DF, NULL);
+        ASSERT (ret == 4);
+        ASSERT (memcmp (buf, "\201\060\211\070", 4) == 0);
+        ASSERT (buf[4] == 'x');
+      }
+      return 0;
+
+    case 65001:
+      /* Locale encoding is CP65001 = UTF-8.  */
+      if (strcmp (locale_charset (), "UTF-8") != 0)
+        return 77;
+      {
+        /* Convert "B\303\274\303\237er": "Büßer" */
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x00FC, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\303\274", 2) == 0);
+        ASSERT (buf[2] == 'x');
+
+        memset (buf, 'x', 8);
+        ret = wcrtomb (buf, 0x00DF, NULL);
+        ASSERT (ret == 2);
+        ASSERT (memcmp (buf, "\303\237", 2) == 0);
+        ASSERT (buf[2] == 'x');
+      }
+      return 0;
+
+    default:
+      return 1;
+    }
+}
+
+int
+main (int argc, char *argv[])
+{
+  int codepage = atoi (argv[argc - 1]);
+  int result;
+  int i;
+
+  result = 77;
+  for (i = 1; i < argc - 1; i++)
+    {
+      int ret = test_one_locale (argv[i], codepage);
+
+      if (ret != 77)
+        result = ret;
+    }
+
+  if (result == 77)
+    {
+      fprintf (stderr, "Skipping test: found no locale with codepage %d\n",
+               codepage);
+    }
+  return result;
+}
+
+#else
+
+int
+main (int argc, char *argv[])
+{
+  fputs ("Skipping test: not a native Windows system\n", stderr);
+  return 77;
+}
+
+#endif
diff --git a/src/grep/gnulib-tests/test-wcrtomb.c b/src/grep/gnulib-tests/test-wcrtomb.c
new file mode 100644
index 0000000..74f2d1d
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wcrtomb.c
@@ -0,0 +1,166 @@
+/* Test of conversion of wide character to multibyte character.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (wcrtomb, size_t, (char *, wchar_t, mbstate_t *));
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+/* Check the multibyte character s[0..n-1].  */
+static void
+check_character (const char *s, size_t n)
+{
+  wchar_t wc;
+  char buf[64];
+  int iret;
+  size_t ret;
+
+  wc = (wchar_t) 0xBADFACE;
+  iret = mbtowc (&wc, s, n);
+  ASSERT (iret == n);
+
+  ret = wcrtomb (buf, wc, NULL);
+  ASSERT (ret == n);
+  ASSERT (memcmp (buf, s, n) == 0);
+
+  /* Test special calling convention, passing a NULL pointer.  */
+  ret = wcrtomb (NULL, wc, NULL);
+  ASSERT (ret == 1);
+}
+
+int
+main (int argc, char *argv[])
+{
+  char buf[64];
+  size_t ret;
+
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Test NUL character.  */
+  {
+    buf[0] = 'x';
+    ret = wcrtomb (buf, 0, NULL);
+    ASSERT (ret == 1);
+    ASSERT (buf[0] == '\0');
+  }
+
+  /* Test single bytes.  */
+  {
+    int c;
+
+    for (c = 0; c < 0x100; c++)
+      switch (c)
+        {
+        case '\t': case '\v': case '\f':
+        case ' ': case '!': case '"': case '#': case '%':
+        case '&': case '\'': case '(': case ')': case '*':
+        case '+': case ',': case '-': case '.': case '/':
+        case '0': case '1': case '2': case '3': case '4':
+        case '5': case '6': case '7': case '8': case '9':
+        case ':': case ';': case '<': case '=': case '>':
+        case '?':
+        case 'A': case 'B': case 'C': case 'D': case 'E':
+        case 'F': case 'G': case 'H': case 'I': case 'J':
+        case 'K': case 'L': case 'M': case 'N': case 'O':
+        case 'P': case 'Q': case 'R': case 'S': case 'T':
+        case 'U': case 'V': case 'W': case 'X': case 'Y':
+        case 'Z':
+        case '[': case '\\': case ']': case '^': case '_':
+        case 'a': case 'b': case 'c': case 'd': case 'e':
+        case 'f': case 'g': case 'h': case 'i': case 'j':
+        case 'k': case 'l': case 'm': case 'n': case 'o':
+        case 'p': case 'q': case 'r': case 's': case 't':
+        case 'u': case 'v': case 'w': case 'x': case 'y':
+        case 'z': case '{': case '|': case '}': case '~':
+          /* c is in the ISO C "basic character set".  */
+          ret = wcrtomb (buf, btowc (c), NULL);
+          ASSERT (ret == 1);
+          ASSERT (buf[0] == (char) c);
+          break;
+        }
+  }
+
+  /* Test special calling convention, passing a NULL pointer.  */
+  {
+    ret = wcrtomb (NULL, '\0', NULL);
+    ASSERT (ret == 1);
+    ret = wcrtomb (NULL, btowc ('x'), NULL);
+    ASSERT (ret == 1);
+  }
+
+  if (argc > 1)
+    switch (argv[1][0])
+      {
+      case '1':
+        /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
+        {
+          const char input[] = "B\374\337er"; /* "Büßer" */
+
+          check_character (input + 1, 1);
+          check_character (input + 2, 1);
+        }
+        return 0;
+
+      case '2':
+        /* Locale encoding is UTF-8.  */
+        {
+          const char input[] = "B\303\274\303\237er"; /* "Büßer" */
+
+          check_character (input + 1, 2);
+          check_character (input + 3, 2);
+        }
+        return 0;
+
+      case '3':
+        /* Locale encoding is EUC-JP.  */
+        {
+          const char input[] = "<\306\374\313\334\270\354>"; /* "<日本語>" */
+
+          check_character (input + 1, 2);
+          check_character (input + 3, 2);
+          check_character (input + 5, 2);
+        }
+        return 0;
+
+      case '4':
+        /* Locale encoding is GB18030.  */
+        {
+          const char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+
+          check_character (input + 1, 2);
+          check_character (input + 3, 4);
+        }
+        return 0;
+
+      case '5':
+        /* C locale; tested above.  */
+        return 0;
+      }
+
+  return 1;
+}
diff --git a/src/grep/gnulib-tests/test-wcrtomb.sh b/src/grep/gnulib-tests/test-wcrtomb.sh
new file mode 100755
index 0000000..1a31b6e
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wcrtomb.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: ${LOCALE_FR=fr_FR}
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR \
+  ${CHECKER} ./test-wcrtomb${EXEEXT} 1 \
+  || exit 1
+fi
+
+# Test whether a specific UTF-8 locale is installed.
+: ${LOCALE_FR_UTF8=fr_FR.UTF-8}
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 \
+  ${CHECKER} ./test-wcrtomb${EXEEXT} 2 \
+  || exit 1
+fi
+
+# Test whether a specific EUC-JP locale is installed.
+: ${LOCALE_JA=ja_JP}
+if test $LOCALE_JA != none; then
+  LC_ALL=$LOCALE_JA \
+  ${CHECKER} ./test-wcrtomb${EXEEXT} 3 \
+  || exit 1
+fi
+
+# Test whether a specific GB18030 locale is installed.
+: ${LOCALE_ZH_CN=zh_CN.GB18030}
+if test $LOCALE_ZH_CN != none; then
+  LC_ALL=$LOCALE_ZH_CN \
+  ${CHECKER} ./test-wcrtomb${EXEEXT} 4 \
+  || exit 1
+fi
+
+# Test in the POSIX locale.
+LC_ALL=C     ${CHECKER} ./test-wcrtomb${EXEEXT} 5 || exit 1
+LC_ALL=POSIX ${CHECKER} ./test-wcrtomb${EXEEXT} 5 || exit 1
+
+exit 0
diff --git a/src/grep/gnulib-tests/test-wctype-h.c b/src/grep/gnulib-tests/test-wctype-h.c
new file mode 100644
index 0000000..f96c73d
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wctype-h.c
@@ -0,0 +1,74 @@
+/* Test of <wctype.h> substitute.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <wctype.h>
+
+#include "macros.h"
+
+/* Check that the type wint_t is defined.  */
+wint_t a = 'x';
+/* Check that WEOF is defined.  */
+wint_t e = WEOF;
+
+/* Check that the type wctype_t is defined.  */
+wctype_t p;
+
+/* Check that the type wctrans_t is defined.  */
+wctrans_t q;
+
+int
+main (void)
+{
+  /* Check that the isw* functions exist as functions or as macros.  */
+  (void) iswalnum (0);
+  (void) iswalpha (0);
+  (void) iswcntrl (0);
+  (void) iswdigit (0);
+  (void) iswgraph (0);
+  (void) iswlower (0);
+  (void) iswprint (0);
+  (void) iswpunct (0);
+  (void) iswspace (0);
+  (void) iswupper (0);
+  (void) iswxdigit (0);
+
+  /* Check that the isw* functions map WEOF to 0.  */
+  ASSERT (!iswalnum (e));
+  ASSERT (!iswalpha (e));
+  ASSERT (!iswcntrl (e));
+  ASSERT (!iswdigit (e));
+  ASSERT (!iswgraph (e));
+  ASSERT (!iswlower (e));
+  ASSERT (!iswprint (e));
+  ASSERT (!iswpunct (e));
+  ASSERT (!iswspace (e));
+  ASSERT (!iswupper (e));
+  ASSERT (!iswxdigit (e));
+
+  /* Check that the tow* functions exist as functions or as macros.  */
+  (void) towlower (0);
+  (void) towupper (0);
+
+  /* Check that the tow* functions map WEOF to WEOF.  */
+  ASSERT (towlower (e) == e);
+  ASSERT (towupper (e) == e);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-wcwidth.c b/src/grep/gnulib-tests/test-wcwidth.c
new file mode 100644
index 0000000..e5e3a54
--- /dev/null
+++ b/src/grep/gnulib-tests/test-wcwidth.c
@@ -0,0 +1,106 @@
+/* Test of wcwidth() function.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (wcwidth, int, (wchar_t));
+
+#include <locale.h>
+#include <string.h>
+
+#include "c-ctype.h"
+#include "localcharset.h"
+#include "macros.h"
+
+int
+main ()
+{
+  wchar_t wc;
+
+#if !GNULIB_WCHAR_SINGLE_LOCALE
+# ifdef C_CTYPE_ASCII
+  /* Test width of ASCII characters.  */
+  for (wc = 0x20; wc < 0x7F; wc++)
+    ASSERT (wcwidth (wc) == 1);
+# endif
+#endif
+
+  /* Switch to an UTF-8 locale.  */
+  if (setlocale (LC_ALL, "fr_FR.UTF-8") != NULL
+      /* Check whether it's really an UTF-8 locale.
+         On OpenBSD 4.0, the setlocale call succeeds only for the LC_CTYPE
+         category and therefore returns "C/fr_FR.UTF-8/C/C/C/C", but the
+         LC_CTYPE category is effectively set to an ASCII LC_CTYPE category;
+         in particular, locale_charset() returns "ASCII".  */
+      && strcmp (locale_charset (), "UTF-8") == 0)
+    {
+      /* Test width of ASCII characters.  */
+      for (wc = 0x20; wc < 0x7F; wc++)
+        ASSERT (wcwidth (wc) == 1);
+
+      /* Test width of some non-spacing characters.  */
+      ASSERT (wcwidth (0x0301) == 0);
+      ASSERT (wcwidth (0x05B0) == 0);
+
+      /* Test width of some format control characters.  */
+      ASSERT (wcwidth (0x200E) <= 0);
+      ASSERT (wcwidth (0x2060) <= 0);
+#if 0  /* wchar_t may be only 16 bits.  */
+      ASSERT (wcwidth (0xE0001) <= 0);
+      ASSERT (wcwidth (0xE0044) <= 0);
+#endif
+
+      /* Test width of some zero width characters.  */
+      /* While it is desirable that U+200B, U+200C, U+200D have width 0,
+         because this makes wcswidth work better on strings that contain these
+         characters, it is acceptable if an implementation treats these
+         characters like control characters.  */
+      ASSERT (wcwidth (0x200B) <= 0);
+      ASSERT (wcwidth (0xFEFF) <= 0);
+
+      /* Test width of some math symbols.
+         U+2202 is marked as having ambiguous width (A) in EastAsianWidth.txt
+         (see <https://www.unicode.org/Public/12.0.0/ucd/EastAsianWidth.txt>).
+         The Unicode Standard Annex 11
+         <https://www.unicode.org/reports/tr11/tr11-36.html>
+         says
+           "Ambiguous characters behave like wide or narrow characters
+            depending on the context (language tag, script identification,
+            associated font, source of data, or explicit markup; all can
+            provide the context). If the context cannot be established
+            reliably, they should be treated as narrow characters by default."
+         For wcwidth(), the only available context information is the locale.
+         "fr_FR.UTF-8" is a Western locale, not an East Asian locale, therefore
+         U+2202 should be treated like a narrow character.  */
+      ASSERT (wcwidth (0x2202) == 1);
+
+      /* Test width of some CJK characters.  */
+      ASSERT (wcwidth (0x3000) == 2);
+      ASSERT (wcwidth (0xB250) == 2);
+      ASSERT (wcwidth (0xFF1A) == 2);
+#if 0  /* wchar_t may be only 16 bits.  */
+      ASSERT (wcwidth (0x20369) == 2);
+      ASSERT (wcwidth (0x2F876) == 2);
+#endif
+    }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-xalloc-die.c b/src/grep/gnulib-tests/test-xalloc-die.c
new file mode 100644
index 0000000..3da598b
--- /dev/null
+++ b/src/grep/gnulib-tests/test-xalloc-die.c
@@ -0,0 +1,28 @@
+/* Test of xalloc_die() function.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson <simon@josefsson.org>, 2009.  */
+
+#include <config.h>
+
+#include "xalloc.h"
+
+int
+main (int argc _GL_UNUSED, char **argv)
+{
+  xalloc_die ();
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/test-xalloc-die.sh b/src/grep/gnulib-tests/test-xalloc-die.sh
new file mode 100755
index 0000000..b88d959
--- /dev/null
+++ b/src/grep/gnulib-tests/test-xalloc-die.sh
@@ -0,0 +1,36 @@
+#!/bin/sh
+# Test suite for xalloc_die.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+# This file is part of the GNUlib Library.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ .
+
+${CHECKER} test-xalloc-die${EXEEXT} > out 2> err
+case $? in
+  1) ;;
+  *) Exit 1;;
+esac
+
+tr -d '\015' < err \
+  | sed 's,.*test-xalloc-die[.ex]*:,test-xalloc-die:,' > err2 || Exit 1
+
+compare - err2 <<\EOF || Exit 1
+test-xalloc-die: memory exhausted
+EOF
+
+test -s out && Exit 1
+
+Exit $fail
diff --git a/src/grep/gnulib-tests/test-xstrtoimax.c b/src/grep/gnulib-tests/test-xstrtoimax.c
new file mode 100644
index 0000000..cc2f6ae
--- /dev/null
+++ b/src/grep/gnulib-tests/test-xstrtoimax.c
@@ -0,0 +1,4 @@
+#define __xstrtol xstrtoimax
+#define __strtol_t intmax_t
+#define __spec PRIdMAX
+#include "test-xstrtol.c"
diff --git a/src/grep/gnulib-tests/test-xstrtoimax.sh b/src/grep/gnulib-tests/test-xstrtoimax.sh
new file mode 100755
index 0000000..6a48e67
--- /dev/null
+++ b/src/grep/gnulib-tests/test-xstrtoimax.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+too_big=99999999999999999999999999999999999999999999999999999999999999999999
+result=0
+
+# test xstrtoimax
+${CHECKER} test-xstrtoimax 1 >> out 2>&1 || result=1
+${CHECKER} test-xstrtoimax -1 >> out 2>&1 || result=1
+${CHECKER} test-xstrtoimax 1k >> out 2>&1 || result=1
+${CHECKER} test-xstrtoimax ${too_big}h >> out 2>&1 && result=1
+${CHECKER} test-xstrtoimax $too_big >> out 2>&1 && result=1
+${CHECKER} test-xstrtoimax x >> out 2>&1 && result=1
+${CHECKER} test-xstrtoimax 9x >> out 2>&1 && result=1
+${CHECKER} test-xstrtoimax 010 >> out 2>&1 || result=1
+${CHECKER} test-xstrtoimax MiB >> out 2>&1 || result=1
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+if echo solaris | tr -d '\r' | grep solais > /dev/null; then
+  cr='\015'
+else
+  cr='\r'
+fi
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k
+mv k out
+
+# compare expected output
+cat > exp <<EOF
+1->1 ()
+-1->-1 ()
+1k->1024 ()
+invalid suffix in X argument '${too_big}h'
+X argument '$too_big' too large
+invalid X argument 'x'
+invalid suffix in X argument '9x'
+010->8 ()
+MiB->1048576 ()
+EOF
+
+compare exp out || result=1
+
+Exit $result
diff --git a/src/grep/gnulib-tests/test-xstrtol.c b/src/grep/gnulib-tests/test-xstrtol.c
new file mode 100644
index 0000000..f07a1f4
--- /dev/null
+++ b/src/grep/gnulib-tests/test-xstrtol.c
@@ -0,0 +1,62 @@
+/* Test of xstrtol module.
+   Copyright (C) 1995-1996, 1998-2001, 2003-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "xstrtol-error.h"
+#include "error.h"
+
+#ifndef __xstrtol
+# define __xstrtol xstrtol
+# define __strtol_t long int
+# define __spec "ld"
+#endif
+
+/* Don't show the program name in error messages.  */
+static void
+print_no_progname (void)
+{
+}
+
+int
+main (int argc, char **argv)
+{
+  strtol_error s_err;
+  int i;
+
+  error_print_progname = print_no_progname;
+
+  for (i = 1; i < argc; i++)
+    {
+      char *p;
+      __strtol_t val;
+
+      s_err = __xstrtol (argv[i], &p, 0, &val, "bckMw0");
+      if (s_err == LONGINT_OK)
+        {
+          printf ("%s->%" __spec " (%s)\n", argv[i], val, p);
+        }
+      else
+        {
+          xstrtol_fatal (s_err, -2, 'X', NULL, argv[i]);
+        }
+    }
+  exit (0);
+}
diff --git a/src/grep/gnulib-tests/test-xstrtol.sh b/src/grep/gnulib-tests/test-xstrtol.sh
new file mode 100755
index 0000000..15dd911
--- /dev/null
+++ b/src/grep/gnulib-tests/test-xstrtol.sh
@@ -0,0 +1,71 @@
+#!/bin/sh
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ .
+
+too_big=99999999999999999999999999999999999999999999999999999999999999999999
+result=0
+
+# test xstrtol
+${CHECKER} test-xstrtol 1 >> out 2>&1 || result=1
+${CHECKER} test-xstrtol -1 >> out 2>&1 || result=1
+${CHECKER} test-xstrtol 1k >> out 2>&1 || result=1
+${CHECKER} test-xstrtol ${too_big}h >> out 2>&1 && result=1
+${CHECKER} test-xstrtol $too_big >> out 2>&1 && result=1
+${CHECKER} test-xstrtol x >> out 2>&1 && result=1
+${CHECKER} test-xstrtol 9x >> out 2>&1 && result=1
+${CHECKER} test-xstrtol 010 >> out 2>&1 || result=1
+# suffix without integer is valid
+${CHECKER} test-xstrtol MiB >> out 2>&1 || result=1
+${CHECKER} test-xstrtol 1bB >> out 2>&1 && result=1
+
+# test xstrtoul
+${CHECKER} test-xstrtoul 1 >> out 2>&1 || result=1
+${CHECKER} test-xstrtoul -1 >> out 2>&1 && result=1
+${CHECKER} test-xstrtoul 1k >> out 2>&1 || result=1
+${CHECKER} test-xstrtoul ${too_big}h >> out 2>&1 && result=1
+${CHECKER} test-xstrtoul $too_big >> out 2>&1 && result=1
+${CHECKER} test-xstrtoul x >> out 2>&1 && result=1
+${CHECKER} test-xstrtoul 9x >> out 2>&1 && result=1
+${CHECKER} test-xstrtoul 010 >> out 2>&1 || result=1
+${CHECKER} test-xstrtoul MiB >> out 2>&1 || result=1
+${CHECKER} test-xstrtoul 1bB >> out 2>&1 && result=1
+
+# Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+# does not understand '\r'.
+if echo solaris | tr -d '\r' | grep solais > /dev/null; then
+  cr='\015'
+else
+  cr='\r'
+fi
+
+# normalize output
+LC_ALL=C tr -d "$cr" < out > k
+mv k out
+
+# compare expected output
+cat > expected <<EOF
+1->1 ()
+-1->-1 ()
+1k->1024 ()
+invalid suffix in X argument '${too_big}h'
+X argument '$too_big' too large
+invalid X argument 'x'
+invalid suffix in X argument '9x'
+010->8 ()
+MiB->1048576 ()
+invalid suffix in X argument '1bB'
+1->1 ()
+invalid X argument '-1'
+1k->1024 ()
+invalid suffix in X argument '${too_big}h'
+X argument '$too_big' too large
+invalid X argument 'x'
+invalid suffix in X argument '9x'
+010->8 ()
+MiB->1048576 ()
+invalid suffix in X argument '1bB'
+EOF
+
+compare expected out || result=1
+
+Exit $result
diff --git a/src/grep/gnulib-tests/test-xstrtoul.c b/src/grep/gnulib-tests/test-xstrtoul.c
new file mode 100644
index 0000000..9dda9ee
--- /dev/null
+++ b/src/grep/gnulib-tests/test-xstrtoul.c
@@ -0,0 +1,4 @@
+#define __xstrtol xstrtoul
+#define __strtol_t unsigned long int
+#define __spec "lu"
+#include "test-xstrtol.c"
diff --git a/src/grep/gnulib-tests/thread-optim.h b/src/grep/gnulib-tests/thread-optim.h
new file mode 100644
index 0000000..0a4ba16
--- /dev/null
+++ b/src/grep/gnulib-tests/thread-optim.h
@@ -0,0 +1,60 @@
+/* Optimization of multithreaded code.
+
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2020.  */
+
+#ifndef _THREAD_OPTIM_H
+#define _THREAD_OPTIM_H
+
+/* This file defines a way to optimize multithreaded code for the single-thread
+   case, based on the variable '__libc_single_threaded', defined in
+   glibc >= 2.32.  */
+
+/* Typical use: In a block or function, use
+
+     bool mt = gl_multithreaded ();
+     ...
+     if (mt)
+       if (pthread_mutex_lock (&lock)) abort ();
+     ...
+     if (mt)
+       if (pthread_mutex_unlock (&lock)) abort ();
+
+   The gl_multithreaded () invocation determines whether the program currently
+   is multithreaded.
+
+   if (mt) STATEMENT executes STATEMENT in the multithreaded case, and skips
+   it in the single-threaded case.
+
+   The code between the gl_multithreaded () invocation and any use of the
+   variable 'mt' must not create threads or invoke functions that may
+   indirectly create threads (e.g. 'dlopen' may, indirectly through C++
+   initializers of global variables in the shared library being opened,
+   create threads).
+
+   The lock here is meant to synchronize threads in the same process.  The
+   same optimization cannot be applied to locks that synchronize different
+   processes (e.g. through shared memory mappings).  */
+
+#if HAVE_SYS_SINGLE_THREADED_H /* glibc >= 2.32 */
+# include <sys/single_threaded.h>
+# define gl_multithreaded()  !__libc_single_threaded
+#else
+# define gl_multithreaded()  1
+#endif
+
+#endif /* _THREAD_OPTIM_H */
diff --git a/src/grep/gnulib-tests/uinttostr.c b/src/grep/gnulib-tests/uinttostr.c
new file mode 100644
index 0000000..46537eb
--- /dev/null
+++ b/src/grep/gnulib-tests/uinttostr.c
@@ -0,0 +1,20 @@
+/* Convert 'unsigned int' integer to printable string.
+
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define anytostr uinttostr
+#define inttype unsigned int
+#include "anytostr.c"
diff --git a/src/grep/gnulib-tests/umaxtostr.c b/src/grep/gnulib-tests/umaxtostr.c
new file mode 100644
index 0000000..f8a7abc
--- /dev/null
+++ b/src/grep/gnulib-tests/umaxtostr.c
@@ -0,0 +1,20 @@
+/* Convert 'uintmax_t' integer to printable string.
+
+   Copyright (C) 2004-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define anytostr umaxtostr
+#define inttype uintmax_t
+#include "anytostr.c"
diff --git a/src/grep/gnulib-tests/unistr/test-u8-mbtoucr.c b/src/grep/gnulib-tests/unistr/test-u8-mbtoucr.c
new file mode 100644
index 0000000..680014b
--- /dev/null
+++ b/src/grep/gnulib-tests/unistr/test-u8-mbtoucr.c
@@ -0,0 +1,187 @@
+/* Test of u8_mbtoucr() function.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
+
+#include <config.h>
+
+#include "unistr.h"
+
+#include "macros.h"
+
+int
+main ()
+{
+  ucs4_t uc;
+  int ret;
+
+  /* Test NUL unit input.  */
+  {
+    static const uint8_t input[] = "";
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 1);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0);
+  }
+
+  /* Test ISO 646 unit input.  */
+  {
+    ucs4_t c;
+    uint8_t buf[1];
+
+    for (c = 0; c < 0x80; c++)
+      {
+        buf[0] = c;
+        uc = 0xBADFACE;
+        ret = u8_mbtoucr (&uc, buf, 1);
+        ASSERT (ret == 1);
+        ASSERT (uc == c);
+      }
+  }
+
+  /* Test 2-byte character input.  */
+  {
+    static const uint8_t input[] = { 0xC3, 0x97 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == 2);
+    ASSERT (uc == 0x00D7);
+  }
+
+  /* Test 3-byte character input.  */
+  {
+    static const uint8_t input[] = { 0xE2, 0x82, 0xAC };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 3);
+    ASSERT (ret == 3);
+    ASSERT (uc == 0x20AC);
+  }
+
+  /* Test 4-byte character input.  */
+  {
+    static const uint8_t input[] = { 0xF4, 0x8F, 0xBF, 0xBD };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 4);
+    ASSERT (ret == 4);
+    ASSERT (uc == 0x10FFFD);
+  }
+
+  /* Test incomplete/invalid 1-byte input.  */
+  {
+    static const uint8_t input[] = { 0xC1 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 1);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xC3 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 1);
+    ASSERT (ret == -2);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xE2 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 1);
+    ASSERT (ret == -2);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xF4 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 1);
+    ASSERT (ret == -2);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xFE };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 1);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+
+  /* Test incomplete/invalid 2-byte input.  */
+  {
+    static const uint8_t input[] = { 0xE0, 0x9F };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xE2, 0x82 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == -2);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xE2, 0xD0 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xF0, 0x8F };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xF3, 0x8F };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == -2);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xF3, 0xD0 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 2);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+
+  /* Test incomplete/invalid 3-byte input.  */
+  {
+    static const uint8_t input[] = { 0xF3, 0x8F, 0xBF };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 3);
+    ASSERT (ret == -2);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xF3, 0xD0, 0xBF };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 3);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+  {
+    static const uint8_t input[] = { 0xF3, 0x8F, 0xD0 };
+    uc = 0xBADFACE;
+    ret = u8_mbtoucr (&uc, input, 3);
+    ASSERT (ret == -1);
+    ASSERT (uc == 0xFFFD);
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/unistr/test-u8-uctomb.c b/src/grep/gnulib-tests/unistr/test-u8-uctomb.c
new file mode 100644
index 0000000..ed8b077
--- /dev/null
+++ b/src/grep/gnulib-tests/unistr/test-u8-uctomb.c
@@ -0,0 +1,157 @@
+/* Test of u8_uctomb() function.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
+
+#include <config.h>
+
+#include "unistr.h"
+
+#include "macros.h"
+
+#define MAGIC 0xBA
+
+int
+main ()
+{
+  /* Test ISO 646 character, in particular the NUL character.  */
+  {
+    ucs4_t uc;
+
+    for (uc = 0; uc < 0x80; uc++)
+      {
+        uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
+        int ret;
+
+        ret = u8_uctomb (buf, uc, 0);
+        ASSERT (ret == -2);
+        ASSERT (buf[0] == MAGIC);
+
+        ret = u8_uctomb (buf, uc, 1);
+        ASSERT (ret == 1);
+        ASSERT (buf[0] == uc);
+        ASSERT (buf[1] == MAGIC);
+      }
+  }
+
+  /* Test 2-byte character.  */
+  {
+    ucs4_t uc = 0x00D7;
+    uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
+    int ret;
+
+    ret = u8_uctomb (buf, uc, 0);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 1);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 2);
+    ASSERT (ret == 2);
+    ASSERT (buf[0] == 0xC3);
+    ASSERT (buf[1] == 0x97);
+    ASSERT (buf[2] == MAGIC);
+  }
+
+  /* Test 3-byte character.  */
+  {
+    ucs4_t uc = 0x20AC;
+    uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
+    int ret;
+
+    ret = u8_uctomb (buf, uc, 0);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 1);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 2);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+    ASSERT (buf[1] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 3);
+    ASSERT (ret == 3);
+    ASSERT (buf[0] == 0xE2);
+    ASSERT (buf[1] == 0x82);
+    ASSERT (buf[2] == 0xAC);
+    ASSERT (buf[3] == MAGIC);
+  }
+
+  /* Test 4-byte character.  */
+  {
+    ucs4_t uc = 0x10FFFD;
+    uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
+    int ret;
+
+    ret = u8_uctomb (buf, uc, 0);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 1);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 2);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+    ASSERT (buf[1] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 3);
+    ASSERT (ret == -2);
+    ASSERT (buf[0] == MAGIC);
+    ASSERT (buf[1] == MAGIC);
+    ASSERT (buf[2] == MAGIC);
+
+    ret = u8_uctomb (buf, uc, 4);
+    ASSERT (ret == 4);
+    ASSERT (buf[0] == 0xF4);
+    ASSERT (buf[1] == 0x8F);
+    ASSERT (buf[2] == 0xBF);
+    ASSERT (buf[3] == 0xBD);
+    ASSERT (buf[4] == MAGIC);
+  }
+
+  /* Test invalid characters.  */
+  {
+    ucs4_t invalid[] = { 0x110000, 0xD800, 0xDBFF, 0xDC00, 0xDFFF };
+    uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
+    size_t i;
+
+    for (i = 0; i < SIZEOF (invalid); i++)
+      {
+        ucs4_t uc = invalid[i];
+        int n;
+
+        for (n = 0; n <= 4; n++)
+          {
+            int ret = u8_uctomb (buf, uc, n);
+            ASSERT (ret == -1);
+            ASSERT (buf[0] == MAGIC);
+            ASSERT (buf[1] == MAGIC);
+            ASSERT (buf[2] == MAGIC);
+            ASSERT (buf[3] == MAGIC);
+            ASSERT (buf[4] == MAGIC);
+          }
+      }
+  }
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/uniwidth/test-uc_width.c b/src/grep/gnulib-tests/uniwidth/test-uc_width.c
new file mode 100644
index 0000000..c957d3c
--- /dev/null
+++ b/src/grep/gnulib-tests/uniwidth/test-uc_width.c
@@ -0,0 +1,56 @@
+/* Test of uc_width() function.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "uniwidth.h"
+
+#include "macros.h"
+
+int
+main ()
+{
+  ucs4_t uc;
+
+  /* Test width of ASCII characters.  */
+  for (uc = 0x0020; uc < 0x007F; uc++)
+    ASSERT (uc_width (uc, "ISO-8859-2") == 1);
+
+  /* Test width of some non-spacing characters.  */
+  ASSERT (uc_width (0x0301, "UTF-8") == 0);
+  ASSERT (uc_width (0x05B0, "UTF-8") == 0);
+
+  /* Test width of some format control characters.  */
+  ASSERT (uc_width (0x200E, "UTF-8") == 0);
+  ASSERT (uc_width (0x2060, "UTF-8") == 0);
+  ASSERT (uc_width (0xE0001, "UTF-8") == 0);
+  ASSERT (uc_width (0xE0044, "UTF-8") == 0);
+
+  /* Test width of some zero width characters.  */
+  ASSERT (uc_width (0x200B, "UTF-8") == 0);
+  ASSERT (uc_width (0xFEFF, "UTF-8") == 0);
+
+  /* Test width of some CJK characters.  */
+  ASSERT (uc_width (0x3000, "UTF-8") == 2);
+  ASSERT (uc_width (0xB250, "UTF-8") == 2);
+  ASSERT (uc_width (0xFF1A, "UTF-8") == 2);
+  ASSERT (uc_width (0x20369, "UTF-8") == 2);
+  ASSERT (uc_width (0x2F876, "UTF-8") == 2);
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/uniwidth/test-uc_width2.c b/src/grep/gnulib-tests/uniwidth/test-uc_width2.c
new file mode 100644
index 0000000..2a68670
--- /dev/null
+++ b/src/grep/gnulib-tests/uniwidth/test-uc_width2.c
@@ -0,0 +1,86 @@
+/* Test of uc_width() function.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include "uniwidth.h"
+
+#include <stdio.h>
+
+#include "macros.h"
+
+/* One of 0, '0', '1', 'A', '2'.  */
+static char current_width;
+/* The interval for which the current_width holds.  */
+static ucs4_t current_start;
+static ucs4_t current_end;
+
+static void
+finish_interval (void)
+{
+  if (current_width != 0)
+    {
+      if (current_start == current_end)
+        printf ("%04X\t\t%c\n", (unsigned) current_start, current_width);
+      else
+        printf ("%04X..%04X\t%c\n", (unsigned) current_start,
+                (unsigned) current_end, current_width);
+      current_width = 0;
+    }
+}
+
+static void
+add_to_interval (ucs4_t uc, char width)
+{
+  if (current_width == width && uc == current_end + 1)
+    current_end = uc;
+  else
+    {
+      finish_interval ();
+      current_width = width;
+      current_start = current_end = uc;
+    }
+}
+
+int
+main ()
+{
+  ucs4_t uc;
+
+  for (uc = 0; uc < 0x110000; uc++)
+    {
+      int w1 = uc_width (uc, "UTF-8");
+      int w2 = uc_width (uc, "GBK");
+      char width =
+        (w1 == 0 && w2 == 0 ? '0' :
+         w1 == 1 && w2 == 1 ? '1' :
+         w1 == 1 && w2 == 2 ? 'A' :
+         w1 == 2 && w2 == 2 ? '2' :
+         0);
+      if (width == 0)
+        {
+          /* uc must be a control character.  */
+          ASSERT (w1 < 0 && w2 < 0);
+        }
+      else
+        add_to_interval (uc, width);
+    }
+  finish_interval ();
+
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/uniwidth/test-uc_width2.sh b/src/grep/gnulib-tests/uniwidth/test-uc_width2.sh
new file mode 100755
index 0000000..23866c9
--- /dev/null
+++ b/src/grep/gnulib-tests/uniwidth/test-uc_width2.sh
@@ -0,0 +1,631 @@
+#!/bin/sh
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' 1 2 3 15
+
+tmpfiles="$tmpfiles uc_width.out"
+${CHECKER} ./test-uc_width2${EXEEXT} | LC_ALL=C tr -d '\r' > uc_width.out
+
+tmpfiles="$tmpfiles uc_width.ok"
+cat > uc_width.ok <<\EOF
+0000		0
+0020..007E	1
+00A0		1
+00A1..00AC	A
+00AD		0
+00AE..02FF	A
+0300..036F	0
+0370..0482	A
+0483..0489	0
+048A..0590	A
+0591..05BD	0
+05BE		A
+05BF		0
+05C0		A
+05C1..05C2	0
+05C3		A
+05C4..05C5	0
+05C6		A
+05C7		0
+05C8..05FF	A
+0600..0605	0
+0606..060F	A
+0610..061A	0
+061B		A
+061C		0
+061D..064A	A
+064B..065F	0
+0660..066F	A
+0670		0
+0671..06D5	A
+06D6..06DD	0
+06DE		A
+06DF..06E4	0
+06E5..06E6	A
+06E7..06E8	0
+06E9		A
+06EA..06ED	0
+06EE..070E	A
+070F		0
+0710		A
+0711		0
+0712..072F	A
+0730..074A	0
+074B..07A5	A
+07A6..07B0	0
+07B1..07EA	A
+07EB..07F3	0
+07F4..0815	A
+0816..0819	0
+081A		A
+081B..0823	0
+0824		A
+0825..0827	0
+0828		A
+0829..082D	0
+082E..0858	A
+0859..085B	0
+085C..08D3	A
+08D4..0902	0
+0903..0939	A
+093A		0
+093B		A
+093C		0
+093D..0940	A
+0941..0948	0
+0949..094C	A
+094D		0
+094E..0950	A
+0951..0957	0
+0958..0961	A
+0962..0963	0
+0964..0980	A
+0981		0
+0982..09BB	A
+09BC		0
+09BD..09C0	A
+09C1..09C4	0
+09C5..09CC	A
+09CD		0
+09CE..09E1	A
+09E2..09E3	0
+09E4..0A00	A
+0A01..0A02	0
+0A03..0A3B	A
+0A3C		0
+0A3D..0A40	A
+0A41..0A42	0
+0A43..0A46	A
+0A47..0A48	0
+0A49..0A4A	A
+0A4B..0A4D	0
+0A4E..0A50	A
+0A51		0
+0A52..0A6F	A
+0A70..0A71	0
+0A72..0A74	A
+0A75		0
+0A76..0A80	A
+0A81..0A82	0
+0A83..0ABB	A
+0ABC		0
+0ABD..0AC0	A
+0AC1..0AC5	0
+0AC6		A
+0AC7..0AC8	0
+0AC9..0ACC	A
+0ACD		0
+0ACE..0AE1	A
+0AE2..0AE3	0
+0AE4..0B00	A
+0B01		0
+0B02..0B3B	A
+0B3C		0
+0B3D..0B3E	A
+0B3F		0
+0B40		A
+0B41..0B44	0
+0B45..0B4C	A
+0B4D		0
+0B4E..0B55	A
+0B56		0
+0B57..0B61	A
+0B62..0B63	0
+0B64..0B81	A
+0B82		0
+0B83..0BBF	A
+0BC0		0
+0BC1..0BCC	A
+0BCD		0
+0BCE..0BFF	A
+0C00		0
+0C01..0C3D	A
+0C3E..0C40	0
+0C41..0C45	A
+0C46..0C48	0
+0C49		A
+0C4A..0C4D	0
+0C4E..0C54	A
+0C55..0C56	0
+0C57..0C61	A
+0C62..0C63	0
+0C64..0C80	A
+0C81		0
+0C82..0CBB	A
+0CBC		0
+0CBD..0CCB	A
+0CCC..0CCD	0
+0CCE..0CE1	A
+0CE2..0CE3	0
+0CE4..0D00	A
+0D01		0
+0D02..0D40	A
+0D41..0D44	0
+0D45..0D4C	A
+0D4D		0
+0D4E..0D61	A
+0D62..0D63	0
+0D64..0DC9	A
+0DCA		0
+0DCB..0DD1	A
+0DD2..0DD4	0
+0DD5		A
+0DD6		0
+0DD7..0E30	A
+0E31		0
+0E32..0E33	A
+0E34..0E3A	0
+0E3B..0E46	A
+0E47..0E4E	0
+0E4F..0EB0	A
+0EB1		0
+0EB2..0EB3	A
+0EB4..0EB9	0
+0EBA		A
+0EBB..0EBC	0
+0EBD..0EC7	A
+0EC8..0ECD	0
+0ECE..0F17	A
+0F18..0F19	0
+0F1A..0F34	A
+0F35		0
+0F36		A
+0F37		0
+0F38		A
+0F39		0
+0F3A..0F70	A
+0F71..0F7E	0
+0F7F		A
+0F80..0F84	0
+0F85		A
+0F86..0F87	0
+0F88..0F8C	A
+0F8D..0F97	0
+0F98		A
+0F99..0FBC	0
+0FBD..0FC5	A
+0FC6		0
+0FC7..102C	A
+102D..1030	0
+1031		A
+1032..1037	0
+1038		A
+1039..103A	0
+103B..103C	A
+103D..103E	0
+103F..1057	A
+1058..1059	0
+105A..105D	A
+105E..1060	0
+1061..1070	A
+1071..1074	0
+1075..1081	A
+1082		0
+1083..1084	A
+1085..1086	0
+1087..108C	A
+108D		0
+108E..109C	A
+109D		0
+109E..10FF	A
+1100..115F	2
+1160..135C	A
+135D..135F	0
+1360..1711	A
+1712..1714	0
+1715..1731	A
+1732..1734	0
+1735..1751	A
+1752..1753	0
+1754..1771	A
+1772..1773	0
+1774..17B3	A
+17B4..17B5	0
+17B6		A
+17B7..17BD	0
+17BE..17C5	A
+17C6		0
+17C7..17C8	A
+17C9..17D3	0
+17D4..17DC	A
+17DD		0
+17DE..180A	A
+180B..180E	0
+180F..1884	A
+1885..1886	0
+1887..18A8	A
+18A9		0
+18AA..191F	A
+1920..1922	0
+1923..1926	A
+1927..1928	0
+1929..1931	A
+1932		0
+1933..1938	A
+1939..193B	0
+193C..1A16	A
+1A17..1A18	0
+1A19..1A1A	A
+1A1B		0
+1A1C..1A55	A
+1A56		0
+1A57		A
+1A58..1A5E	0
+1A5F		A
+1A60		0
+1A61		A
+1A62		0
+1A63..1A64	A
+1A65..1A6C	0
+1A6D..1A72	A
+1A73..1A7C	0
+1A7D..1A7E	A
+1A7F		0
+1A80..1AAF	A
+1AB0..1ABE	0
+1ABF..1AFF	A
+1B00..1B03	0
+1B04..1B33	A
+1B34		0
+1B35		A
+1B36..1B3A	0
+1B3B		A
+1B3C		0
+1B3D..1B41	A
+1B42		0
+1B43..1B6A	A
+1B6B..1B73	0
+1B74..1B7F	A
+1B80..1B81	0
+1B82..1BA1	A
+1BA2..1BA5	0
+1BA6..1BA7	A
+1BA8..1BA9	0
+1BAA		A
+1BAB..1BAD	0
+1BAE..1BE5	A
+1BE6		0
+1BE7		A
+1BE8..1BE9	0
+1BEA..1BEC	A
+1BED		0
+1BEE		A
+1BEF..1BF1	0
+1BF2..1C2B	A
+1C2C..1C33	0
+1C34..1C35	A
+1C36..1C37	0
+1C38..1CCF	A
+1CD0..1CD2	0
+1CD3		A
+1CD4..1CE0	0
+1CE1		A
+1CE2..1CE8	0
+1CE9..1CEC	A
+1CED		0
+1CEE..1CF3	A
+1CF4		0
+1CF5..1CF7	A
+1CF8..1CF9	0
+1CFA..1DBF	A
+1DC0..1DF5	0
+1DF6..1DFA	A
+1DFB..1DFF	0
+1E00..200A	A
+200B..200F	0
+2010..2029	A
+202A..202E	0
+202F..205F	A
+2060..2064	0
+2065		A
+2066..206F	0
+2070..20A8	A
+20A9		1
+20AA..20CF	A
+20D0..20F0	0
+20F1..2328	A
+2329..232A	2
+232B..2CEE	A
+2CEF..2CF1	0
+2CF2..2D7E	A
+2D7F		0
+2D80..2DDF	A
+2DE0..2DFF	0
+2E00..2E7F	A
+2E80..3029	2
+302A..302D	0
+302E..303E	2
+303F		A
+3040..3098	2
+3099..309A	0
+309B..4DBF	2
+4DC0..4DFF	A
+4E00..A4CF	2
+A4D0..A66E	A
+A66F..A672	0
+A673		A
+A674..A67D	0
+A67E..A69D	A
+A69E..A69F	0
+A6A0..A6EF	A
+A6F0..A6F1	0
+A6F2..A801	A
+A802		0
+A803..A805	A
+A806		0
+A807..A80A	A
+A80B		0
+A80C..A824	A
+A825..A826	0
+A827..A8C3	A
+A8C4..A8C5	0
+A8C6..A8DF	A
+A8E0..A8F1	0
+A8F2..A925	A
+A926..A92D	0
+A92E..A946	A
+A947..A951	0
+A952..A97F	A
+A980..A982	0
+A983..A9B2	A
+A9B3		0
+A9B4..A9B5	A
+A9B6..A9B9	0
+A9BA..A9BB	A
+A9BC		0
+A9BD..A9E4	A
+A9E5		0
+A9E6..AA28	A
+AA29..AA2E	0
+AA2F..AA30	A
+AA31..AA32	0
+AA33..AA34	A
+AA35..AA36	0
+AA37..AA42	A
+AA43		0
+AA44..AA4B	A
+AA4C		0
+AA4D..AA7B	A
+AA7C		0
+AA7D..AAAF	A
+AAB0		0
+AAB1		A
+AAB2..AAB4	0
+AAB5..AAB6	A
+AAB7..AAB8	0
+AAB9..AABD	A
+AABE..AABF	0
+AAC0		A
+AAC1		0
+AAC2..AAEB	A
+AAEC..AAED	0
+AAEE..AAF5	A
+AAF6		0
+AAF7..ABE4	A
+ABE5		0
+ABE6..ABE7	A
+ABE8		0
+ABE9..ABEC	A
+ABED		0
+ABEE..ABFF	A
+AC00..D7A3	2
+D7A4..F8FF	A
+F900..FAFF	2
+FB00..FB1D	A
+FB1E		0
+FB1F..FDFF	A
+FE00..FE0F	0
+FE10..FE1F	2
+FE20..FE2F	0
+FE30..FE6F	2
+FE70..FEFE	A
+FEFF		0
+FF00..FF60	2
+FF61..FFDF	1
+FFE0..FFE6	2
+FFE7..FFF8	1
+FFF9..FFFB	0
+FFFC..101FC	1
+101FD		0
+101FE..102DF	1
+102E0		0
+102E1..10375	1
+10376..1037A	0
+1037B..10A00	1
+10A01..10A03	0
+10A04		1
+10A05..10A06	0
+10A07..10A0B	1
+10A0C..10A0F	0
+10A10..10A37	1
+10A38..10A3A	0
+10A3B..10A3E	1
+10A3F		0
+10A40..10AE4	1
+10AE5..10AE6	0
+10AE7..11000	1
+11001		0
+11002..11037	1
+11038..11046	0
+11047..1107E	1
+1107F..11081	0
+11082..110B2	1
+110B3..110B6	0
+110B7..110B8	1
+110B9..110BA	0
+110BB..110BC	1
+110BD		0
+110BE..110FF	1
+11100..11102	0
+11103..11126	1
+11127..1112B	0
+1112C		1
+1112D..11134	0
+11135..11172	1
+11173		0
+11174..1117F	1
+11180..11181	0
+11182..111B5	1
+111B6..111BE	0
+111BF..111C9	1
+111CA..111CC	0
+111CD..1122E	1
+1122F..11231	0
+11232..11233	1
+11234		0
+11235		1
+11236..11237	0
+11238..1123D	1
+1123E		0
+1123F..112DE	1
+112DF		0
+112E0..112E2	1
+112E3..112EA	0
+112EB..112FF	1
+11300..11301	0
+11302..1133B	1
+1133C		0
+1133D..1133F	1
+11340		0
+11341..11365	1
+11366..1136C	0
+1136D..1136F	1
+11370..11374	0
+11375..11437	1
+11438..1143F	0
+11440..11441	1
+11442..11444	0
+11445		1
+11446		0
+11447..114B2	1
+114B3..114B8	0
+114B9		1
+114BA		0
+114BB..114BE	1
+114BF..114C0	0
+114C1		1
+114C2..114C3	0
+114C4..115B1	1
+115B2..115B5	0
+115B6..115BB	1
+115BC..115BD	0
+115BE		1
+115BF..115C0	0
+115C1..115DB	1
+115DC..115DD	0
+115DE..11632	1
+11633..1163A	0
+1163B..1163C	1
+1163D		0
+1163E		1
+1163F..11640	0
+11641..116AA	1
+116AB		0
+116AC		1
+116AD		0
+116AE..116AF	1
+116B0..116B5	0
+116B6		1
+116B7		0
+116B8..1171C	1
+1171D..1171F	0
+11720..11721	1
+11722..11725	0
+11726		1
+11727..1172B	0
+1172C..11C2F	1
+11C30..11C36	0
+11C37		1
+11C38..11C3D	0
+11C3E..11C91	1
+11C92..11CA7	0
+11CA8..11CA9	1
+11CAA..11CB0	0
+11CB1		1
+11CB2..11CB3	0
+11CB4		1
+11CB5..11CB6	0
+11CB7..16AEF	1
+16AF0..16AF4	0
+16AF5..16B2F	1
+16B30..16B36	0
+16B37..16F8E	1
+16F8F..16F92	0
+16F93..1BC9C	1
+1BC9D..1BC9E	0
+1BC9F		1
+1BCA0..1BCA3	0
+1BCA4..1D166	1
+1D167..1D169	0
+1D16A..1D172	1
+1D173..1D182	0
+1D183..1D184	1
+1D185..1D18B	0
+1D18C..1D1A9	1
+1D1AA..1D1AD	0
+1D1AE..1D241	1
+1D242..1D244	0
+1D245..1D9FF	1
+1DA00..1DA36	0
+1DA37..1DA3A	1
+1DA3B..1DA6C	0
+1DA6D..1DA74	1
+1DA75		0
+1DA76..1DA83	1
+1DA84		0
+1DA85..1DA9A	1
+1DA9B..1DA9F	0
+1DAA0		1
+1DAA1..1DAAF	0
+1DAB0..1DFFF	1
+1E000..1E006	0
+1E007		1
+1E008..1E018	0
+1E019..1E01A	1
+1E01B..1E021	0
+1E022		1
+1E023..1E024	0
+1E025		1
+1E026..1E02A	0
+1E02B..1E8CF	1
+1E8D0..1E8D6	0
+1E8D7..1E943	1
+1E944..1E94A	0
+1E94B..1FFFF	1
+20000..3FFFF	2
+40000..E0000	1
+E0001		0
+E0002..E001F	1
+E0020..E007F	0
+E0080..E00FF	1
+E0100..E01EF	0
+E01F0..10FFFF	1
+EOF
+
+: ${DIFF=diff}
+${DIFF} uc_width.ok uc_width.out
+result=$?
+
+rm -fr $tmpfiles
+
+exit $result
diff --git a/src/grep/gnulib-tests/unsetenv.c b/src/grep/gnulib-tests/unsetenv.c
new file mode 100644
index 0000000..b2e910e
--- /dev/null
+++ b/src/grep/gnulib-tests/unsetenv.c
@@ -0,0 +1,127 @@
+/* Copyright (C) 1992, 1995-2002, 2005-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Don't use __attribute__ __nonnull__ in this compilation unit.  Otherwise gcc
+   optimizes away the name == NULL test below.  */
+#define _GL_ARG_NONNULL(params)
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <errno.h>
+#if !_LIBC
+# define __set_errno(ev) ((errno) = (ev))
+#endif
+
+#include <string.h>
+#include <unistd.h>
+
+#if !_LIBC
+# define __environ      environ
+#endif
+
+#if _LIBC
+/* This lock protects against simultaneous modifications of 'environ'.  */
+# include <bits/libc-lock.h>
+__libc_lock_define_initialized (static, envlock)
+# define LOCK   __libc_lock_lock (envlock)
+# define UNLOCK __libc_lock_unlock (envlock)
+#else
+# define LOCK
+# define UNLOCK
+#endif
+
+/* In the GNU C library we must keep the namespace clean.  */
+#ifdef _LIBC
+# define unsetenv __unsetenv
+#endif
+
+#if _LIBC || !HAVE_UNSETENV
+
+int
+unsetenv (const char *name)
+{
+  size_t len;
+  char **ep;
+
+  if (name == NULL || *name == '\0' || strchr (name, '=') != NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  len = strlen (name);
+
+  LOCK;
+
+  ep = __environ;
+  while (*ep != NULL)
+    if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
+      {
+        /* Found it.  Remove this pointer by moving later ones back.  */
+        char **dp = ep;
+
+        do
+          dp[0] = dp[1];
+        while (*dp++);
+        /* Continue the loop in case NAME appears again.  */
+      }
+    else
+      ++ep;
+
+  UNLOCK;
+
+  return 0;
+}
+
+#ifdef _LIBC
+# undef unsetenv
+weak_alias (__unsetenv, unsetenv)
+#endif
+
+#else /* HAVE_UNSETENV */
+
+# undef unsetenv
+# if !HAVE_DECL_UNSETENV
+#  if VOID_UNSETENV
+extern void unsetenv (const char *);
+#  else
+extern int unsetenv (const char *);
+#  endif
+# endif
+
+/* Call the underlying unsetenv, in case there is hidden bookkeeping
+   that needs updating beyond just modifying environ.  */
+int
+rpl_unsetenv (const char *name)
+{
+  int result = 0;
+  if (!name || !*name || strchr (name, '='))
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  while (getenv (name))
+# if !VOID_UNSETENV
+    result =
+# endif
+      unsetenv (name);
+  return result;
+}
+
+#endif /* HAVE_UNSETENV */
diff --git a/src/grep/gnulib-tests/vasnprintf.c b/src/grep/gnulib-tests/vasnprintf.c
new file mode 100644
index 0000000..d9b669d
--- /dev/null
+++ b/src/grep/gnulib-tests/vasnprintf.c
@@ -0,0 +1,5872 @@
+/* vsprintf with automatic memory allocation.
+   Copyright (C) 1999, 2002-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This file can be parametrized with the following macros:
+     VASNPRINTF         The name of the function being defined.
+     FCHAR_T            The element type of the format string.
+     DCHAR_T            The element type of the destination (result) string.
+     FCHAR_T_ONLY_ASCII Set to 1 to enable verification that all characters
+                        in the format string are ASCII. MUST be set if
+                        FCHAR_T and DCHAR_T are not the same type.
+     DIRECTIVE          Structure denoting a format directive.
+                        Depends on FCHAR_T.
+     DIRECTIVES         Structure denoting the set of format directives of a
+                        format string.  Depends on FCHAR_T.
+     PRINTF_PARSE       Function that parses a format string.
+                        Depends on FCHAR_T.
+     DCHAR_CPY          memcpy like function for DCHAR_T[] arrays.
+     DCHAR_SET          memset like function for DCHAR_T[] arrays.
+     DCHAR_MBSNLEN      mbsnlen like function for DCHAR_T[] arrays.
+     SNPRINTF           The system's snprintf (or similar) function.
+                        This may be either snprintf or swprintf.
+     TCHAR_T            The element type of the argument and result string
+                        of the said SNPRINTF function.  This may be either
+                        char or wchar_t.  The code exploits that
+                        sizeof (TCHAR_T) | sizeof (DCHAR_T) and
+                        alignof (TCHAR_T) <= alignof (DCHAR_T).
+     DCHAR_IS_TCHAR     Set to 1 if DCHAR_T and TCHAR_T are the same type.
+     DCHAR_CONV_FROM_ENCODING A function to convert from char[] to DCHAR[].
+     DCHAR_IS_UINT8_T   Set to 1 if DCHAR_T is uint8_t.
+     DCHAR_IS_UINT16_T  Set to 1 if DCHAR_T is uint16_t.
+     DCHAR_IS_UINT32_T  Set to 1 if DCHAR_T is uint32_t.
+     ENABLE_UNISTDIO    Set to 1 to enable the unistdio extensions.
+     ENABLE_WCHAR_FALLBACK  Set to 1 to avoid EILSEQ during conversion of wide
+                        characters (wchar_t) and wide character strings
+                        (wchar_t[]) to multibyte sequences.  The fallback is the
+                        hexadecimal escape syntax (\unnnn or \Unnnnnnnn) or,
+                        if wchar_t is not Unicode encoded, \wnnnn or \Wnnnnnnnn.
+ */
+
+/* Tell glibc's <stdio.h> to provide a prototype for snprintf().
+   This must come before <config.h> because <config.h> may include
+   <features.h>, and once <features.h> has been included, it's too late.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE    1
+#endif
+
+#ifndef VASNPRINTF
+# include <config.h>
+#endif
+
+/* As of GCC 11.2.1, gcc -Wanalyzer-too-complex reports that main's
+   use of CHECK macros expands to code that is too complicated for gcc
+   -fanalyzer.  Suppress the resulting bogus warnings.  */
+#if 10 <= __GNUC__
+# pragma GCC diagnostic ignored "-Wanalyzer-null-argument"
+#endif
+
+#include <alloca.h>
+
+/* Specification.  */
+#ifndef VASNPRINTF
+# if WIDE_CHAR_VERSION
+#  include "vasnwprintf.h"
+# else
+#  include "vasnprintf.h"
+# endif
+#endif
+
+#include <locale.h>     /* localeconv() */
+#include <stdio.h>      /* snprintf(), sprintf() */
+#include <stdlib.h>     /* abort(), malloc(), realloc(), free() */
+#include <string.h>     /* memcpy(), strlen() */
+#include <errno.h>      /* errno */
+#include <limits.h>     /* CHAR_BIT */
+#include <float.h>      /* DBL_MAX_EXP, LDBL_MAX_EXP */
+#if HAVE_NL_LANGINFO
+# include <langinfo.h>
+#endif
+#ifndef VASNPRINTF
+# if WIDE_CHAR_VERSION
+#  include "wprintf-parse.h"
+# else
+#  include "printf-parse.h"
+# endif
+#endif
+
+/* Checked size_t computations.  */
+#include "xsize.h"
+
+#include "attribute.h"
+#include "verify.h"
+
+#if (NEED_PRINTF_DOUBLE || NEED_PRINTF_LONG_DOUBLE) && !defined IN_LIBINTL
+# include <math.h>
+# include "float+.h"
+#endif
+
+#if (NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE) && !defined IN_LIBINTL
+# include <math.h>
+# include "isnand-nolibm.h"
+#endif
+
+#if (NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE) && !defined IN_LIBINTL
+# include <math.h>
+# include "isnanl-nolibm.h"
+# include "fpucw.h"
+#endif
+
+#if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_DOUBLE) && !defined IN_LIBINTL
+# include <math.h>
+# include "isnand-nolibm.h"
+# include "printf-frexp.h"
+#endif
+
+#if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE) && !defined IN_LIBINTL
+# include <math.h>
+# include "isnanl-nolibm.h"
+# include "printf-frexpl.h"
+# include "fpucw.h"
+#endif
+
+/* Default parameters.  */
+#ifndef VASNPRINTF
+# if WIDE_CHAR_VERSION
+#  define VASNPRINTF vasnwprintf
+#  define FCHAR_T wchar_t
+#  define DCHAR_T wchar_t
+#  define TCHAR_T wchar_t
+#  define DCHAR_IS_TCHAR 1
+#  define DIRECTIVE wchar_t_directive
+#  define DIRECTIVES wchar_t_directives
+#  define PRINTF_PARSE wprintf_parse
+#  define DCHAR_CPY wmemcpy
+#  define DCHAR_SET wmemset
+# else
+#  define VASNPRINTF vasnprintf
+#  define FCHAR_T char
+#  define DCHAR_T char
+#  define TCHAR_T char
+#  define DCHAR_IS_TCHAR 1
+#  define DIRECTIVE char_directive
+#  define DIRECTIVES char_directives
+#  define PRINTF_PARSE printf_parse
+#  define DCHAR_CPY memcpy
+#  define DCHAR_SET memset
+# endif
+#endif
+#if WIDE_CHAR_VERSION
+  /* TCHAR_T is wchar_t.  */
+# define USE_SNPRINTF 1
+# if HAVE_DECL__SNWPRINTF
+   /* On Windows, the function swprintf() has a different signature than
+      on Unix; we use the function _snwprintf() or - on mingw - snwprintf()
+      instead.  The mingw function snwprintf() has fewer bugs than the
+      MSVCRT function _snwprintf(), so prefer that.  */
+#  if defined __MINGW32__
+#   define SNPRINTF snwprintf
+#  else
+#   define SNPRINTF _snwprintf
+#   define USE_MSVC__SNPRINTF 1
+#  endif
+# else
+   /* Unix.  */
+#  define SNPRINTF swprintf
+# endif
+#else
+  /* TCHAR_T is char.  */
+  /* Use snprintf if it exists under the name 'snprintf' or '_snprintf'.
+     But don't use it on BeOS, since BeOS snprintf produces no output if the
+     size argument is >= 0x3000000.
+     Also don't use it on Linux libc5, since there snprintf with size = 1
+     writes any output without bounds, like sprintf.  */
+# if (HAVE_DECL__SNPRINTF || HAVE_SNPRINTF) && !defined __BEOS__ && !(__GNU_LIBRARY__ == 1)
+#  define USE_SNPRINTF 1
+# else
+#  define USE_SNPRINTF 0
+# endif
+# if HAVE_DECL__SNPRINTF
+   /* Windows.  The mingw function snprintf() has fewer bugs than the MSVCRT
+      function _snprintf(), so prefer that.  */
+#  if defined __MINGW32__
+#   define SNPRINTF snprintf
+    /* Here we need to call the native snprintf, not rpl_snprintf.  */
+#   undef snprintf
+#  else
+    /* MSVC versions < 14 did not have snprintf, only _snprintf.  */
+#   define SNPRINTF _snprintf
+#   define USE_MSVC__SNPRINTF 1
+#  endif
+# else
+   /* Unix.  */
+#  define SNPRINTF snprintf
+   /* Here we need to call the native snprintf, not rpl_snprintf.  */
+#  undef snprintf
+# endif
+#endif
+/* Here we need to call the native sprintf, not rpl_sprintf.  */
+#undef sprintf
+
+/* GCC >= 4.0 with -Wall emits unjustified "... may be used uninitialized"
+   warnings in this file.  Use -Dlint to suppress them.  */
+#if defined GCC_LINT || defined lint
+# define IF_LINT(Code) Code
+#else
+# define IF_LINT(Code) /* empty */
+#endif
+
+/* Avoid some warnings from "gcc -Wshadow".
+   This file doesn't use the exp() and remainder() functions.  */
+#undef exp
+#define exp expo
+#undef remainder
+#define remainder rem
+
+#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF) && !WIDE_CHAR_VERSION
+# if (HAVE_STRNLEN && !defined _AIX)
+#  define local_strnlen strnlen
+# else
+#  ifndef local_strnlen_defined
+#   define local_strnlen_defined 1
+static size_t
+local_strnlen (const char *string, size_t maxlen)
+{
+  const char *end = memchr (string, '\0', maxlen);
+  return end ? (size_t) (end - string) : maxlen;
+}
+#  endif
+# endif
+#endif
+
+#if (((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF) && WIDE_CHAR_VERSION) || ((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && !WIDE_CHAR_VERSION && DCHAR_IS_TCHAR)) && HAVE_WCHAR_T
+# if HAVE_WCSLEN
+#  define local_wcslen wcslen
+# else
+   /* Solaris 2.5.1 has wcslen() in a separate library libw.so. To avoid
+      a dependency towards this library, here is a local substitute.
+      Define this substitute only once, even if this file is included
+      twice in the same compilation unit.  */
+#  ifndef local_wcslen_defined
+#   define local_wcslen_defined 1
+static size_t
+local_wcslen (const wchar_t *s)
+{
+  const wchar_t *ptr;
+
+  for (ptr = s; *ptr != (wchar_t) 0; ptr++)
+    ;
+  return ptr - s;
+}
+#  endif
+# endif
+#endif
+
+#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF) && HAVE_WCHAR_T && WIDE_CHAR_VERSION
+# if HAVE_WCSNLEN
+#  define local_wcsnlen wcsnlen
+# else
+#  ifndef local_wcsnlen_defined
+#   define local_wcsnlen_defined 1
+static size_t
+local_wcsnlen (const wchar_t *s, size_t maxlen)
+{
+  const wchar_t *ptr;
+
+  for (ptr = s; maxlen > 0 && *ptr != (wchar_t) 0; ptr++, maxlen--)
+    ;
+  return ptr - s;
+}
+#  endif
+# endif
+#endif
+
+#if (((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL) || ENABLE_WCHAR_FALLBACK) && HAVE_WCHAR_T) || (ENABLE_WCHAR_FALLBACK && HAVE_WINT_T)) && !WIDE_CHAR_VERSION
+# if ENABLE_WCHAR_FALLBACK
+static size_t
+wctomb_fallback (char *s, wchar_t wc)
+{
+  static char hex[16] = "0123456789ABCDEF";
+
+  s[0] = '\\';
+  if (sizeof (wchar_t) > 2 && wc > 0xffff)
+    {
+#  if __STDC_ISO_10646__ || (__GLIBC__ >= 2) || (defined _WIN32 || defined __CYGWIN__)
+      s[1] = 'U';
+#  else
+      s[1] = 'W';
+#  endif
+      s[2] = hex[(wc & 0xf0000000U) >> 28];
+      s[3] = hex[(wc & 0xf000000U) >> 24];
+      s[4] = hex[(wc & 0xf00000U) >> 20];
+      s[5] = hex[(wc & 0xf0000U) >> 16];
+      s[6] = hex[(wc & 0xf000U) >> 12];
+      s[7] = hex[(wc & 0xf00U) >> 8];
+      s[8] = hex[(wc & 0xf0U) >> 4];
+      s[9] = hex[wc & 0xfU];
+      return 10;
+    }
+  else
+    {
+#  if __STDC_ISO_10646__ || (__GLIBC__ >= 2) || (defined _WIN32 || defined __CYGWIN__)
+      s[1] = 'u';
+#  else
+      s[1] = 'w';
+#  endif
+      s[2] = hex[(wc & 0xf000U) >> 12];
+      s[3] = hex[(wc & 0xf00U) >> 8];
+      s[4] = hex[(wc & 0xf0U) >> 4];
+      s[5] = hex[wc & 0xfU];
+      return 6;
+    }
+}
+#  if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+static size_t
+local_wcrtomb (char *s, wchar_t wc, mbstate_t *ps)
+{
+  size_t count = wcrtomb (s, wc, ps);
+  if (count == (size_t)(-1))
+    count = wctomb_fallback (s, wc);
+  return count;
+}
+#  else
+static int
+local_wctomb (char *s, wchar_t wc)
+{
+  int count = wctomb (s, wc);
+  if (count < 0)
+    count = wctomb_fallback (s, wc);
+  return count;
+}
+#   define local_wcrtomb(S, WC, PS)  local_wctomb ((S), (WC))
+#  endif
+# else
+#  if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+#   define local_wcrtomb(S, WC, PS)  wcrtomb ((S), (WC), (PS))
+#  else
+#   define local_wcrtomb(S, WC, PS)  wctomb ((S), (WC))
+#  endif
+# endif
+#endif
+
+#if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE || NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE) && !defined IN_LIBINTL
+/* Determine the decimal-point character according to the current locale.  */
+# ifndef decimal_point_char_defined
+#  define decimal_point_char_defined 1
+static char
+decimal_point_char (void)
+{
+  const char *point;
+  /* Determine it in a multithread-safe way.  We know nl_langinfo is
+     multithread-safe on glibc systems and Mac OS X systems, but is not required
+     to be multithread-safe by POSIX.  sprintf(), however, is multithread-safe.
+     localeconv() is rarely multithread-safe.  */
+#  if HAVE_NL_LANGINFO && (__GLIBC__ || defined __UCLIBC__ || (defined __APPLE__ && defined __MACH__))
+  point = nl_langinfo (RADIXCHAR);
+#  elif 1
+  char pointbuf[5];
+  sprintf (pointbuf, "%#.0f", 1.0);
+  point = &pointbuf[1];
+#  else
+  point = localeconv () -> decimal_point;
+#  endif
+  /* The decimal point is always a single byte: either '.' or ','.  */
+  return (point[0] != '\0' ? point[0] : '.');
+}
+# endif
+#endif
+
+#if NEED_PRINTF_INFINITE_DOUBLE && !NEED_PRINTF_DOUBLE && !defined IN_LIBINTL
+
+/* Equivalent to !isfinite(x) || x == 0, but does not require libm.  */
+static int
+is_infinite_or_zero (double x)
+{
+  return isnand (x) || x + x == x;
+}
+
+#endif
+
+#if NEED_PRINTF_INFINITE_LONG_DOUBLE && !NEED_PRINTF_LONG_DOUBLE && !defined IN_LIBINTL
+
+/* Equivalent to !isfinite(x) || x == 0, but does not require libm.  */
+static int
+is_infinite_or_zerol (long double x)
+{
+  return isnanl (x) || x + x == x;
+}
+
+#endif
+
+#if (NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_DOUBLE) && !defined IN_LIBINTL
+
+/* Converting 'long double' to decimal without rare rounding bugs requires
+   real bignums.  We use the naming conventions of GNU gmp, but vastly simpler
+   (and slower) algorithms.  */
+
+typedef unsigned int mp_limb_t;
+# define GMP_LIMB_BITS 32
+verify (sizeof (mp_limb_t) * CHAR_BIT == GMP_LIMB_BITS);
+
+typedef unsigned long long mp_twolimb_t;
+# define GMP_TWOLIMB_BITS 64
+verify (sizeof (mp_twolimb_t) * CHAR_BIT == GMP_TWOLIMB_BITS);
+
+/* Representation of a bignum >= 0.  */
+typedef struct
+{
+  size_t nlimbs;
+  mp_limb_t *limbs; /* Bits in little-endian order, allocated with malloc().  */
+} mpn_t;
+
+/* Compute the product of two bignums >= 0.
+   Return the allocated memory in case of success, NULL in case of memory
+   allocation failure.  */
+static void *
+multiply (mpn_t src1, mpn_t src2, mpn_t *dest)
+{
+  const mp_limb_t *p1;
+  const mp_limb_t *p2;
+  size_t len1;
+  size_t len2;
+
+  if (src1.nlimbs <= src2.nlimbs)
+    {
+      len1 = src1.nlimbs;
+      p1 = src1.limbs;
+      len2 = src2.nlimbs;
+      p2 = src2.limbs;
+    }
+  else
+    {
+      len1 = src2.nlimbs;
+      p1 = src2.limbs;
+      len2 = src1.nlimbs;
+      p2 = src1.limbs;
+    }
+  /* Now 0 <= len1 <= len2.  */
+  if (len1 == 0)
+    {
+      /* src1 or src2 is zero.  */
+      dest->nlimbs = 0;
+      dest->limbs = (mp_limb_t *) malloc (1);
+    }
+  else
+    {
+      /* Here 1 <= len1 <= len2.  */
+      size_t dlen;
+      mp_limb_t *dp;
+      size_t k, i, j;
+
+      dlen = len1 + len2;
+      dp = (mp_limb_t *) malloc (dlen * sizeof (mp_limb_t));
+      if (dp == NULL)
+        return NULL;
+      for (k = len2; k > 0; )
+        dp[--k] = 0;
+      for (i = 0; i < len1; i++)
+        {
+          mp_limb_t digit1 = p1[i];
+          mp_twolimb_t carry = 0;
+          for (j = 0; j < len2; j++)
+            {
+              mp_limb_t digit2 = p2[j];
+              carry += (mp_twolimb_t) digit1 * (mp_twolimb_t) digit2;
+              carry += dp[i + j];
+              dp[i + j] = (mp_limb_t) carry;
+              carry = carry >> GMP_LIMB_BITS;
+            }
+          dp[i + len2] = (mp_limb_t) carry;
+        }
+      /* Normalise.  */
+      while (dlen > 0 && dp[dlen - 1] == 0)
+        dlen--;
+      dest->nlimbs = dlen;
+      dest->limbs = dp;
+    }
+  return dest->limbs;
+}
+
+/* Compute the quotient of a bignum a >= 0 and a bignum b > 0.
+   a is written as  a = q * b + r  with 0 <= r < b.  q is the quotient, r
+   the remainder.
+   Finally, round-to-even is performed: If r > b/2 or if r = b/2 and q is odd,
+   q is incremented.
+   Return the allocated memory in case of success, NULL in case of memory
+   allocation failure.  */
+static void *
+divide (mpn_t a, mpn_t b, mpn_t *q)
+{
+  /* Algorithm:
+     First normalise a and b: a=[a[m-1],...,a[0]], b=[b[n-1],...,b[0]]
+     with m>=0 and n>0 (in base beta = 2^GMP_LIMB_BITS).
+     If m<n, then q:=0 and r:=a.
+     If m>=n=1, perform a single-precision division:
+       r:=0, j:=m,
+       while j>0 do
+         {Here (q[m-1]*beta^(m-1)+...+q[j]*beta^j) * b[0] + r*beta^j =
+               = a[m-1]*beta^(m-1)+...+a[j]*beta^j und 0<=r<b[0]<beta}
+         j:=j-1, r:=r*beta+a[j], q[j]:=floor(r/b[0]), r:=r-b[0]*q[j].
+       Normalise [q[m-1],...,q[0]], yields q.
+     If m>=n>1, perform a multiple-precision division:
+       We have a/b < beta^(m-n+1).
+       s:=intDsize-1-(highest bit in b[n-1]), 0<=s<intDsize.
+       Shift a and b left by s bits, copying them. r:=a.
+       r=[r[m],...,r[0]], b=[b[n-1],...,b[0]] with b[n-1]>=beta/2.
+       For j=m-n,...,0: {Here 0 <= r < b*beta^(j+1).}
+         Compute q* :
+           q* := floor((r[j+n]*beta+r[j+n-1])/b[n-1]).
+           In case of overflow (q* >= beta) set q* := beta-1.
+           Compute c2 := ((r[j+n]*beta+r[j+n-1]) - q* * b[n-1])*beta + r[j+n-2]
+           and c3 := b[n-2] * q*.
+           {We have 0 <= c2 < 2*beta^2, even 0 <= c2 < beta^2 if no overflow
+            occurred.  Furthermore 0 <= c3 < beta^2.
+            If there was overflow and
+            r[j+n]*beta+r[j+n-1] - q* * b[n-1] >= beta, i.e. c2 >= beta^2,
+            the next test can be skipped.}
+           While c3 > c2, {Here 0 <= c2 < c3 < beta^2}
+             Put q* := q* - 1, c2 := c2 + b[n-1]*beta, c3 := c3 - b[n-2].
+           If q* > 0:
+             Put r := r - b * q* * beta^j. In detail:
+               [r[n+j],...,r[j]] := [r[n+j],...,r[j]] - q* * [b[n-1],...,b[0]].
+               hence: u:=0, for i:=0 to n-1 do
+                              u := u + q* * b[i],
+                              r[j+i]:=r[j+i]-(u mod beta) (+ beta, if carry),
+                              u:=u div beta (+ 1, if carry in subtraction)
+                      r[n+j]:=r[n+j]-u.
+               {Since always u = (q* * [b[i-1],...,b[0]] div beta^i) + 1
+                               < q* + 1 <= beta,
+                the carry u does not overflow.}
+             If a negative carry occurs, put q* := q* - 1
+               and [r[n+j],...,r[j]] := [r[n+j],...,r[j]] + [0,b[n-1],...,b[0]].
+         Set q[j] := q*.
+       Normalise [q[m-n],..,q[0]]; this yields the quotient q.
+       Shift [r[n-1],...,r[0]] right by s bits and normalise; this yields the
+       rest r.
+       The room for q[j] can be allocated at the memory location of r[n+j].
+     Finally, round-to-even:
+       Shift r left by 1 bit.
+       If r > b or if r = b and q[0] is odd, q := q+1.
+   */
+  const mp_limb_t *a_ptr = a.limbs;
+  size_t a_len = a.nlimbs;
+  const mp_limb_t *b_ptr = b.limbs;
+  size_t b_len = b.nlimbs;
+  mp_limb_t *roomptr;
+  mp_limb_t *tmp_roomptr = NULL;
+  mp_limb_t *q_ptr;
+  size_t q_len;
+  mp_limb_t *r_ptr;
+  size_t r_len;
+
+  /* Allocate room for a_len+2 digits.
+     (Need a_len+1 digits for the real division and 1 more digit for the
+     final rounding of q.)  */
+  roomptr = (mp_limb_t *) malloc ((a_len + 2) * sizeof (mp_limb_t));
+  if (roomptr == NULL)
+    return NULL;
+
+  /* Normalise a.  */
+  while (a_len > 0 && a_ptr[a_len - 1] == 0)
+    a_len--;
+
+  /* Normalise b.  */
+  for (;;)
+    {
+      if (b_len == 0)
+        /* Division by zero.  */
+        abort ();
+      if (b_ptr[b_len - 1] == 0)
+        b_len--;
+      else
+        break;
+    }
+
+  /* Here m = a_len >= 0 and n = b_len > 0.  */
+
+  if (a_len < b_len)
+    {
+      /* m<n: trivial case.  q=0, r := copy of a.  */
+      r_ptr = roomptr;
+      r_len = a_len;
+      memcpy (r_ptr, a_ptr, a_len * sizeof (mp_limb_t));
+      q_ptr = roomptr + a_len;
+      q_len = 0;
+    }
+  else if (b_len == 1)
+    {
+      /* n=1: single precision division.
+         beta^(m-1) <= a < beta^m  ==>  beta^(m-2) <= a/b < beta^m  */
+      r_ptr = roomptr;
+      q_ptr = roomptr + 1;
+      {
+        mp_limb_t den = b_ptr[0];
+        mp_limb_t remainder = 0;
+        const mp_limb_t *sourceptr = a_ptr + a_len;
+        mp_limb_t *destptr = q_ptr + a_len;
+        size_t count;
+        for (count = a_len; count > 0; count--)
+          {
+            mp_twolimb_t num =
+              ((mp_twolimb_t) remainder << GMP_LIMB_BITS) | *--sourceptr;
+            *--destptr = num / den;
+            remainder = num % den;
+          }
+        /* Normalise and store r.  */
+        if (remainder > 0)
+          {
+            r_ptr[0] = remainder;
+            r_len = 1;
+          }
+        else
+          r_len = 0;
+        /* Normalise q.  */
+        q_len = a_len;
+        if (q_ptr[q_len - 1] == 0)
+          q_len--;
+      }
+    }
+  else
+    {
+      /* n>1: multiple precision division.
+         beta^(m-1) <= a < beta^m, beta^(n-1) <= b < beta^n  ==>
+         beta^(m-n-1) <= a/b < beta^(m-n+1).  */
+      /* Determine s.  */
+      size_t s;
+      {
+        mp_limb_t msd = b_ptr[b_len - 1]; /* = b[n-1], > 0 */
+        /* Determine s = GMP_LIMB_BITS - integer_length (msd).
+           Code copied from gnulib's integer_length.c.  */
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) \
+     || (__clang_major__ >= 4)
+        s = __builtin_clz (msd);
+# else
+#  if defined DBL_EXPBIT0_WORD && defined DBL_EXPBIT0_BIT
+        if (GMP_LIMB_BITS <= DBL_MANT_BIT)
+          {
+            /* Use 'double' operations.
+               Assumes an IEEE 754 'double' implementation.  */
+#   define DBL_EXP_MASK ((DBL_MAX_EXP - DBL_MIN_EXP) | 7)
+#   define DBL_EXP_BIAS (DBL_EXP_MASK / 2 - 1)
+#   define NWORDS \
+     ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+            union { double value; unsigned int word[NWORDS]; } m;
+
+            /* Use a single integer to floating-point conversion.  */
+            m.value = msd;
+
+            s = GMP_LIMB_BITS
+                - (((m.word[DBL_EXPBIT0_WORD] >> DBL_EXPBIT0_BIT) & DBL_EXP_MASK)
+                   - DBL_EXP_BIAS);
+          }
+        else
+#   undef NWORDS
+#  endif
+          {
+            s = 31;
+            if (msd >= 0x10000)
+              {
+                msd = msd >> 16;
+                s -= 16;
+              }
+            if (msd >= 0x100)
+              {
+                msd = msd >> 8;
+                s -= 8;
+              }
+            if (msd >= 0x10)
+              {
+                msd = msd >> 4;
+                s -= 4;
+              }
+            if (msd >= 0x4)
+              {
+                msd = msd >> 2;
+                s -= 2;
+              }
+            if (msd >= 0x2)
+              {
+                msd = msd >> 1;
+                s -= 1;
+              }
+          }
+# endif
+      }
+      /* 0 <= s < GMP_LIMB_BITS.
+         Copy b, shifting it left by s bits.  */
+      if (s > 0)
+        {
+          tmp_roomptr = (mp_limb_t *) malloc (b_len * sizeof (mp_limb_t));
+          if (tmp_roomptr == NULL)
+            {
+              free (roomptr);
+              return NULL;
+            }
+          {
+            const mp_limb_t *sourceptr = b_ptr;
+            mp_limb_t *destptr = tmp_roomptr;
+            mp_twolimb_t accu = 0;
+            size_t count;
+            for (count = b_len; count > 0; count--)
+              {
+                accu += (mp_twolimb_t) *sourceptr++ << s;
+                *destptr++ = (mp_limb_t) accu;
+                accu = accu >> GMP_LIMB_BITS;
+              }
+            /* accu must be zero, since that was how s was determined.  */
+            if (accu != 0)
+              abort ();
+          }
+          b_ptr = tmp_roomptr;
+        }
+      /* Copy a, shifting it left by s bits, yields r.
+         Memory layout:
+         At the beginning: r = roomptr[0..a_len],
+         at the end: r = roomptr[0..b_len-1], q = roomptr[b_len..a_len]  */
+      r_ptr = roomptr;
+      if (s == 0)
+        {
+          memcpy (r_ptr, a_ptr, a_len * sizeof (mp_limb_t));
+          r_ptr[a_len] = 0;
+        }
+      else
+        {
+          const mp_limb_t *sourceptr = a_ptr;
+          mp_limb_t *destptr = r_ptr;
+          mp_twolimb_t accu = 0;
+          size_t count;
+          for (count = a_len; count > 0; count--)
+            {
+              accu += (mp_twolimb_t) *sourceptr++ << s;
+              *destptr++ = (mp_limb_t) accu;
+              accu = accu >> GMP_LIMB_BITS;
+            }
+          *destptr++ = (mp_limb_t) accu;
+        }
+      q_ptr = roomptr + b_len;
+      q_len = a_len - b_len + 1; /* q will have m-n+1 limbs */
+      {
+        size_t j = a_len - b_len; /* m-n */
+        mp_limb_t b_msd = b_ptr[b_len - 1]; /* b[n-1] */
+        mp_limb_t b_2msd = b_ptr[b_len - 2]; /* b[n-2] */
+        mp_twolimb_t b_msdd = /* b[n-1]*beta+b[n-2] */
+          ((mp_twolimb_t) b_msd << GMP_LIMB_BITS) | b_2msd;
+        /* Division loop, traversed m-n+1 times.
+           j counts down, b is unchanged, beta/2 <= b[n-1] < beta.  */
+        for (;;)
+          {
+            mp_limb_t q_star;
+            mp_limb_t c1;
+            if (r_ptr[j + b_len] < b_msd) /* r[j+n] < b[n-1] ? */
+              {
+                /* Divide r[j+n]*beta+r[j+n-1] by b[n-1], no overflow.  */
+                mp_twolimb_t num =
+                  ((mp_twolimb_t) r_ptr[j + b_len] << GMP_LIMB_BITS)
+                  | r_ptr[j + b_len - 1];
+                q_star = num / b_msd;
+                c1 = num % b_msd;
+              }
+            else
+              {
+                /* Overflow, hence r[j+n]*beta+r[j+n-1] >= beta*b[n-1].  */
+                q_star = (mp_limb_t)~(mp_limb_t)0; /* q* = beta-1 */
+                /* Test whether r[j+n]*beta+r[j+n-1] - (beta-1)*b[n-1] >= beta
+                   <==> r[j+n]*beta+r[j+n-1] + b[n-1] >= beta*b[n-1]+beta
+                   <==> b[n-1] < floor((r[j+n]*beta+r[j+n-1]+b[n-1])/beta)
+                        {<= beta !}.
+                   If yes, jump directly to the subtraction loop.
+                   (Otherwise, r[j+n]*beta+r[j+n-1] - (beta-1)*b[n-1] < beta
+                    <==> floor((r[j+n]*beta+r[j+n-1]+b[n-1])/beta) = b[n-1] ) */
+                if (r_ptr[j + b_len] > b_msd
+                    || (c1 = r_ptr[j + b_len - 1] + b_msd) < b_msd)
+                  /* r[j+n] >= b[n-1]+1 or
+                     r[j+n] = b[n-1] and the addition r[j+n-1]+b[n-1] gives a
+                     carry.  */
+                  goto subtract;
+              }
+            /* q_star = q*,
+               c1 = (r[j+n]*beta+r[j+n-1]) - q* * b[n-1] (>=0, <beta).  */
+            {
+              mp_twolimb_t c2 = /* c1*beta+r[j+n-2] */
+                ((mp_twolimb_t) c1 << GMP_LIMB_BITS) | r_ptr[j + b_len - 2];
+              mp_twolimb_t c3 = /* b[n-2] * q* */
+                (mp_twolimb_t) b_2msd * (mp_twolimb_t) q_star;
+              /* While c2 < c3, increase c2 and decrease c3.
+                 Consider c3-c2.  While it is > 0, decrease it by
+                 b[n-1]*beta+b[n-2].  Because of b[n-1]*beta+b[n-2] >= beta^2/2
+                 this can happen only twice.  */
+              if (c3 > c2)
+                {
+                  q_star = q_star - 1; /* q* := q* - 1 */
+                  if (c3 - c2 > b_msdd)
+                    q_star = q_star - 1; /* q* := q* - 1 */
+                }
+            }
+            if (q_star > 0)
+              subtract:
+              {
+                /* Subtract r := r - b * q* * beta^j.  */
+                mp_limb_t cr;
+                {
+                  const mp_limb_t *sourceptr = b_ptr;
+                  mp_limb_t *destptr = r_ptr + j;
+                  mp_twolimb_t carry = 0;
+                  size_t count;
+                  for (count = b_len; count > 0; count--)
+                    {
+                      /* Here 0 <= carry <= q*.  */
+                      carry =
+                        carry
+                        + (mp_twolimb_t) q_star * (mp_twolimb_t) *sourceptr++
+                        + (mp_limb_t) ~(*destptr);
+                      /* Here 0 <= carry <= beta*q* + beta-1.  */
+                      *destptr++ = ~(mp_limb_t) carry;
+                      carry = carry >> GMP_LIMB_BITS; /* <= q* */
+                    }
+                  cr = (mp_limb_t) carry;
+                }
+                /* Subtract cr from r_ptr[j + b_len], then forget about
+                   r_ptr[j + b_len].  */
+                if (cr > r_ptr[j + b_len])
+                  {
+                    /* Subtraction gave a carry.  */
+                    q_star = q_star - 1; /* q* := q* - 1 */
+                    /* Add b back.  */
+                    {
+                      const mp_limb_t *sourceptr = b_ptr;
+                      mp_limb_t *destptr = r_ptr + j;
+                      mp_limb_t carry = 0;
+                      size_t count;
+                      for (count = b_len; count > 0; count--)
+                        {
+                          mp_limb_t source1 = *sourceptr++;
+                          mp_limb_t source2 = *destptr;
+                          *destptr++ = source1 + source2 + carry;
+                          carry =
+                            (carry
+                             ? source1 >= (mp_limb_t) ~source2
+                             : source1 > (mp_limb_t) ~source2);
+                        }
+                    }
+                    /* Forget about the carry and about r[j+n].  */
+                  }
+              }
+            /* q* is determined.  Store it as q[j].  */
+            q_ptr[j] = q_star;
+            if (j == 0)
+              break;
+            j--;
+          }
+      }
+      r_len = b_len;
+      /* Normalise q.  */
+      if (q_ptr[q_len - 1] == 0)
+        q_len--;
+# if 0 /* Not needed here, since we need r only to compare it with b/2, and
+          b is shifted left by s bits.  */
+      /* Shift r right by s bits.  */
+      if (s > 0)
+        {
+          mp_limb_t ptr = r_ptr + r_len;
+          mp_twolimb_t accu = 0;
+          size_t count;
+          for (count = r_len; count > 0; count--)
+            {
+              accu = (mp_twolimb_t) (mp_limb_t) accu << GMP_LIMB_BITS;
+              accu += (mp_twolimb_t) *--ptr << (GMP_LIMB_BITS - s);
+              *ptr = (mp_limb_t) (accu >> GMP_LIMB_BITS);
+            }
+        }
+# endif
+      /* Normalise r.  */
+      while (r_len > 0 && r_ptr[r_len - 1] == 0)
+        r_len--;
+    }
+  /* Compare r << 1 with b.  */
+  if (r_len > b_len)
+    goto increment_q;
+  {
+    size_t i;
+    for (i = b_len;;)
+      {
+        mp_limb_t r_i =
+          (i <= r_len && i > 0 ? r_ptr[i - 1] >> (GMP_LIMB_BITS - 1) : 0)
+          | (i < r_len ? r_ptr[i] << 1 : 0);
+        mp_limb_t b_i = (i < b_len ? b_ptr[i] : 0);
+        if (r_i > b_i)
+          goto increment_q;
+        if (r_i < b_i)
+          goto keep_q;
+        if (i == 0)
+          break;
+        i--;
+      }
+  }
+  if (q_len > 0 && ((q_ptr[0] & 1) != 0))
+    /* q is odd.  */
+    increment_q:
+    {
+      size_t i;
+      for (i = 0; i < q_len; i++)
+        if (++(q_ptr[i]) != 0)
+          goto keep_q;
+      q_ptr[q_len++] = 1;
+    }
+  keep_q:
+  if (tmp_roomptr != NULL)
+    free (tmp_roomptr);
+  q->limbs = q_ptr;
+  q->nlimbs = q_len;
+  return roomptr;
+}
+
+/* Convert a bignum a >= 0, multiplied with 10^extra_zeroes, to decimal
+   representation.
+   Destroys the contents of a.
+   Return the allocated memory - containing the decimal digits in low-to-high
+   order, terminated with a NUL character - in case of success, NULL in case
+   of memory allocation failure.  */
+static char *
+convert_to_decimal (mpn_t a, size_t extra_zeroes)
+{
+  mp_limb_t *a_ptr = a.limbs;
+  size_t a_len = a.nlimbs;
+  /* 0.03345 is slightly larger than log(2)/(9*log(10)).  */
+  size_t c_len = 9 * ((size_t)(a_len * (GMP_LIMB_BITS * 0.03345f)) + 1);
+  /* We need extra_zeroes bytes for zeroes, followed by c_len bytes for the
+     digits of a, followed by 1 byte for the terminating NUL.  */
+  char *c_ptr = (char *) malloc (xsum (xsum (extra_zeroes, c_len), 1));
+  if (c_ptr != NULL)
+    {
+      char *d_ptr = c_ptr;
+      for (; extra_zeroes > 0; extra_zeroes--)
+        *d_ptr++ = '0';
+      while (a_len > 0)
+        {
+          /* Divide a by 10^9, in-place.  */
+          mp_limb_t remainder = 0;
+          mp_limb_t *ptr = a_ptr + a_len;
+          size_t count;
+          for (count = a_len; count > 0; count--)
+            {
+              mp_twolimb_t num =
+                ((mp_twolimb_t) remainder << GMP_LIMB_BITS) | *--ptr;
+              *ptr = num / 1000000000;
+              remainder = num % 1000000000;
+            }
+          /* Store the remainder as 9 decimal digits.  */
+          for (count = 9; count > 0; count--)
+            {
+              *d_ptr++ = '0' + (remainder % 10);
+              remainder = remainder / 10;
+            }
+          /* Normalize a.  */
+          if (a_ptr[a_len - 1] == 0)
+            a_len--;
+        }
+      /* Remove leading zeroes.  */
+      while (d_ptr > c_ptr && d_ptr[-1] == '0')
+        d_ptr--;
+      /* But keep at least one zero.  */
+      if (d_ptr == c_ptr)
+        *d_ptr++ = '0';
+      /* Terminate the string.  */
+      *d_ptr = '\0';
+    }
+  return c_ptr;
+}
+
+# if NEED_PRINTF_LONG_DOUBLE
+
+/* Assuming x is finite and >= 0:
+   write x as x = 2^e * m, where m is a bignum.
+   Return the allocated memory in case of success, NULL in case of memory
+   allocation failure.  */
+static void *
+decode_long_double (long double x, int *ep, mpn_t *mp)
+{
+  mpn_t m;
+  int exp;
+  long double y;
+  size_t i;
+
+  /* Allocate memory for result.  */
+  m.nlimbs = (LDBL_MANT_BIT + GMP_LIMB_BITS - 1) / GMP_LIMB_BITS;
+  m.limbs = (mp_limb_t *) malloc (m.nlimbs * sizeof (mp_limb_t));
+  if (m.limbs == NULL)
+    return NULL;
+  /* Split into exponential part and mantissa.  */
+  y = frexpl (x, &exp);
+  if (!(y >= 0.0L && y < 1.0L))
+    abort ();
+  /* x = 2^exp * y = 2^(exp - LDBL_MANT_BIT) * (y * 2^LDBL_MANT_BIT), and the
+     latter is an integer.  */
+  /* Convert the mantissa (y * 2^LDBL_MANT_BIT) to a sequence of limbs.
+     I'm not sure whether it's safe to cast a 'long double' value between
+     2^31 and 2^32 to 'unsigned int', therefore play safe and cast only
+     'long double' values between 0 and 2^16 (to 'unsigned int' or 'int',
+     doesn't matter).  */
+#  if (LDBL_MANT_BIT % GMP_LIMB_BITS) != 0
+#   if (LDBL_MANT_BIT % GMP_LIMB_BITS) > GMP_LIMB_BITS / 2
+    {
+      mp_limb_t hi, lo;
+      y *= (mp_limb_t) 1 << (LDBL_MANT_BIT % (GMP_LIMB_BITS / 2));
+      hi = (int) y;
+      y -= hi;
+      if (!(y >= 0.0L && y < 1.0L))
+        abort ();
+      y *= (mp_limb_t) 1 << (GMP_LIMB_BITS / 2);
+      lo = (int) y;
+      y -= lo;
+      if (!(y >= 0.0L && y < 1.0L))
+        abort ();
+      m.limbs[LDBL_MANT_BIT / GMP_LIMB_BITS] = (hi << (GMP_LIMB_BITS / 2)) | lo;
+    }
+#   else
+    {
+      mp_limb_t d;
+      y *= (mp_limb_t) 1 << (LDBL_MANT_BIT % GMP_LIMB_BITS);
+      d = (int) y;
+      y -= d;
+      if (!(y >= 0.0L && y < 1.0L))
+        abort ();
+      m.limbs[LDBL_MANT_BIT / GMP_LIMB_BITS] = d;
+    }
+#   endif
+#  endif
+  for (i = LDBL_MANT_BIT / GMP_LIMB_BITS; i > 0; )
+    {
+      mp_limb_t hi, lo;
+      y *= (mp_limb_t) 1 << (GMP_LIMB_BITS / 2);
+      hi = (int) y;
+      y -= hi;
+      if (!(y >= 0.0L && y < 1.0L))
+        abort ();
+      y *= (mp_limb_t) 1 << (GMP_LIMB_BITS / 2);
+      lo = (int) y;
+      y -= lo;
+      if (!(y >= 0.0L && y < 1.0L))
+        abort ();
+      m.limbs[--i] = (hi << (GMP_LIMB_BITS / 2)) | lo;
+    }
+#  if 0 /* On FreeBSD 6.1/x86, 'long double' numbers sometimes have excess
+           precision.  */
+  if (!(y == 0.0L))
+    abort ();
+#  endif
+  /* Normalise.  */
+  while (m.nlimbs > 0 && m.limbs[m.nlimbs - 1] == 0)
+    m.nlimbs--;
+  *mp = m;
+  *ep = exp - LDBL_MANT_BIT;
+  return m.limbs;
+}
+
+# endif
+
+# if NEED_PRINTF_DOUBLE
+
+/* Assuming x is finite and >= 0:
+   write x as x = 2^e * m, where m is a bignum.
+   Return the allocated memory in case of success, NULL in case of memory
+   allocation failure.  */
+static void *
+decode_double (double x, int *ep, mpn_t *mp)
+{
+  mpn_t m;
+  int exp;
+  double y;
+  size_t i;
+
+  /* Allocate memory for result.  */
+  m.nlimbs = (DBL_MANT_BIT + GMP_LIMB_BITS - 1) / GMP_LIMB_BITS;
+  m.limbs = (mp_limb_t *) malloc (m.nlimbs * sizeof (mp_limb_t));
+  if (m.limbs == NULL)
+    return NULL;
+  /* Split into exponential part and mantissa.  */
+  y = frexp (x, &exp);
+  if (!(y >= 0.0 && y < 1.0))
+    abort ();
+  /* x = 2^exp * y = 2^(exp - DBL_MANT_BIT) * (y * 2^DBL_MANT_BIT), and the
+     latter is an integer.  */
+  /* Convert the mantissa (y * 2^DBL_MANT_BIT) to a sequence of limbs.
+     I'm not sure whether it's safe to cast a 'double' value between
+     2^31 and 2^32 to 'unsigned int', therefore play safe and cast only
+     'double' values between 0 and 2^16 (to 'unsigned int' or 'int',
+     doesn't matter).  */
+#  if (DBL_MANT_BIT % GMP_LIMB_BITS) != 0
+#   if (DBL_MANT_BIT % GMP_LIMB_BITS) > GMP_LIMB_BITS / 2
+    {
+      mp_limb_t hi, lo;
+      y *= (mp_limb_t) 1 << (DBL_MANT_BIT % (GMP_LIMB_BITS / 2));
+      hi = (int) y;
+      y -= hi;
+      if (!(y >= 0.0 && y < 1.0))
+        abort ();
+      y *= (mp_limb_t) 1 << (GMP_LIMB_BITS / 2);
+      lo = (int) y;
+      y -= lo;
+      if (!(y >= 0.0 && y < 1.0))
+        abort ();
+      m.limbs[DBL_MANT_BIT / GMP_LIMB_BITS] = (hi << (GMP_LIMB_BITS / 2)) | lo;
+    }
+#   else
+    {
+      mp_limb_t d;
+      y *= (mp_limb_t) 1 << (DBL_MANT_BIT % GMP_LIMB_BITS);
+      d = (int) y;
+      y -= d;
+      if (!(y >= 0.0 && y < 1.0))
+        abort ();
+      m.limbs[DBL_MANT_BIT / GMP_LIMB_BITS] = d;
+    }
+#   endif
+#  endif
+  for (i = DBL_MANT_BIT / GMP_LIMB_BITS; i > 0; )
+    {
+      mp_limb_t hi, lo;
+      y *= (mp_limb_t) 1 << (GMP_LIMB_BITS / 2);
+      hi = (int) y;
+      y -= hi;
+      if (!(y >= 0.0 && y < 1.0))
+        abort ();
+      y *= (mp_limb_t) 1 << (GMP_LIMB_BITS / 2);
+      lo = (int) y;
+      y -= lo;
+      if (!(y >= 0.0 && y < 1.0))
+        abort ();
+      m.limbs[--i] = (hi << (GMP_LIMB_BITS / 2)) | lo;
+    }
+  if (!(y == 0.0))
+    abort ();
+  /* Normalise.  */
+  while (m.nlimbs > 0 && m.limbs[m.nlimbs - 1] == 0)
+    m.nlimbs--;
+  *mp = m;
+  *ep = exp - DBL_MANT_BIT;
+  return m.limbs;
+}
+
+# endif
+
+/* Assuming x = 2^e * m is finite and >= 0, and n is an integer:
+   Returns the decimal representation of round (x * 10^n).
+   Return the allocated memory - containing the decimal digits in low-to-high
+   order, terminated with a NUL character - in case of success, NULL in case
+   of memory allocation failure.  */
+static char *
+scale10_round_decimal_decoded (int e, mpn_t m, void *memory, int n)
+{
+  int s;
+  size_t extra_zeroes;
+  unsigned int abs_n;
+  unsigned int abs_s;
+  mp_limb_t *pow5_ptr;
+  size_t pow5_len;
+  unsigned int s_limbs;
+  unsigned int s_bits;
+  mpn_t pow5;
+  mpn_t z;
+  void *z_memory;
+  char *digits;
+
+  if (memory == NULL)
+    return NULL;
+  /* x = 2^e * m, hence
+     y = round (2^e * 10^n * m) = round (2^(e+n) * 5^n * m)
+       = round (2^s * 5^n * m).  */
+  s = e + n;
+  extra_zeroes = 0;
+  /* Factor out a common power of 10 if possible.  */
+  if (s > 0 && n > 0)
+    {
+      extra_zeroes = (s < n ? s : n);
+      s -= extra_zeroes;
+      n -= extra_zeroes;
+    }
+  /* Here y = round (2^s * 5^n * m) * 10^extra_zeroes.
+     Before converting to decimal, we need to compute
+     z = round (2^s * 5^n * m).  */
+  /* Compute 5^|n|, possibly shifted by |s| bits if n and s have the same
+     sign.  2.322 is slightly larger than log(5)/log(2).  */
+  abs_n = (n >= 0 ? n : -n);
+  abs_s = (s >= 0 ? s : -s);
+  pow5_ptr = (mp_limb_t *) malloc (((int)(abs_n * (2.322f / GMP_LIMB_BITS)) + 1
+                                    + abs_s / GMP_LIMB_BITS + 1)
+                                   * sizeof (mp_limb_t));
+  if (pow5_ptr == NULL)
+    {
+      free (memory);
+      return NULL;
+    }
+  /* Initialize with 1.  */
+  pow5_ptr[0] = 1;
+  pow5_len = 1;
+  /* Multiply with 5^|n|.  */
+  if (abs_n > 0)
+    {
+      static mp_limb_t const small_pow5[13 + 1] =
+        {
+          1, 5, 25, 125, 625, 3125, 15625, 78125, 390625, 1953125, 9765625,
+          48828125, 244140625, 1220703125
+        };
+      unsigned int n13;
+      for (n13 = 0; n13 <= abs_n; n13 += 13)
+        {
+          mp_limb_t digit1 = small_pow5[n13 + 13 <= abs_n ? 13 : abs_n - n13];
+          size_t j;
+          mp_twolimb_t carry = 0;
+          for (j = 0; j < pow5_len; j++)
+            {
+              mp_limb_t digit2 = pow5_ptr[j];
+              carry += (mp_twolimb_t) digit1 * (mp_twolimb_t) digit2;
+              pow5_ptr[j] = (mp_limb_t) carry;
+              carry = carry >> GMP_LIMB_BITS;
+            }
+          if (carry > 0)
+            pow5_ptr[pow5_len++] = (mp_limb_t) carry;
+        }
+    }
+  s_limbs = abs_s / GMP_LIMB_BITS;
+  s_bits = abs_s % GMP_LIMB_BITS;
+  if (n >= 0 ? s >= 0 : s <= 0)
+    {
+      /* Multiply with 2^|s|.  */
+      if (s_bits > 0)
+        {
+          mp_limb_t *ptr = pow5_ptr;
+          mp_twolimb_t accu = 0;
+          size_t count;
+          for (count = pow5_len; count > 0; count--)
+            {
+              accu += (mp_twolimb_t) *ptr << s_bits;
+              *ptr++ = (mp_limb_t) accu;
+              accu = accu >> GMP_LIMB_BITS;
+            }
+          if (accu > 0)
+            {
+              *ptr = (mp_limb_t) accu;
+              pow5_len++;
+            }
+        }
+      if (s_limbs > 0)
+        {
+          size_t count;
+          for (count = pow5_len; count > 0;)
+            {
+              count--;
+              pow5_ptr[s_limbs + count] = pow5_ptr[count];
+            }
+          for (count = s_limbs; count > 0;)
+            {
+              count--;
+              pow5_ptr[count] = 0;
+            }
+          pow5_len += s_limbs;
+        }
+      pow5.limbs = pow5_ptr;
+      pow5.nlimbs = pow5_len;
+      if (n >= 0)
+        {
+          /* Multiply m with pow5.  No division needed.  */
+          z_memory = multiply (m, pow5, &z);
+        }
+      else
+        {
+          /* Divide m by pow5 and round.  */
+          z_memory = divide (m, pow5, &z);
+        }
+    }
+  else
+    {
+      pow5.limbs = pow5_ptr;
+      pow5.nlimbs = pow5_len;
+      if (n >= 0)
+        {
+          /* n >= 0, s < 0.
+             Multiply m with pow5, then divide by 2^|s|.  */
+          mpn_t numerator;
+          mpn_t denominator;
+          void *tmp_memory;
+          tmp_memory = multiply (m, pow5, &numerator);
+          if (tmp_memory == NULL)
+            {
+              free (pow5_ptr);
+              free (memory);
+              return NULL;
+            }
+          /* Construct 2^|s|.  */
+          {
+            mp_limb_t *ptr = pow5_ptr + pow5_len;
+            size_t i;
+            for (i = 0; i < s_limbs; i++)
+              ptr[i] = 0;
+            ptr[s_limbs] = (mp_limb_t) 1 << s_bits;
+            denominator.limbs = ptr;
+            denominator.nlimbs = s_limbs + 1;
+          }
+          z_memory = divide (numerator, denominator, &z);
+          free (tmp_memory);
+        }
+      else
+        {
+          /* n < 0, s > 0.
+             Multiply m with 2^s, then divide by pow5.  */
+          mpn_t numerator;
+          mp_limb_t *num_ptr;
+          num_ptr = (mp_limb_t *) malloc ((m.nlimbs + s_limbs + 1)
+                                          * sizeof (mp_limb_t));
+          if (num_ptr == NULL)
+            {
+              free (pow5_ptr);
+              free (memory);
+              return NULL;
+            }
+          {
+            mp_limb_t *destptr = num_ptr;
+            {
+              size_t i;
+              for (i = 0; i < s_limbs; i++)
+                *destptr++ = 0;
+            }
+            if (s_bits > 0)
+              {
+                const mp_limb_t *sourceptr = m.limbs;
+                mp_twolimb_t accu = 0;
+                size_t count;
+                for (count = m.nlimbs; count > 0; count--)
+                  {
+                    accu += (mp_twolimb_t) *sourceptr++ << s_bits;
+                    *destptr++ = (mp_limb_t) accu;
+                    accu = accu >> GMP_LIMB_BITS;
+                  }
+                if (accu > 0)
+                  *destptr++ = (mp_limb_t) accu;
+              }
+            else
+              {
+                const mp_limb_t *sourceptr = m.limbs;
+                size_t count;
+                for (count = m.nlimbs; count > 0; count--)
+                  *destptr++ = *sourceptr++;
+              }
+            numerator.limbs = num_ptr;
+            numerator.nlimbs = destptr - num_ptr;
+          }
+          z_memory = divide (numerator, pow5, &z);
+          free (num_ptr);
+        }
+    }
+  free (pow5_ptr);
+  free (memory);
+
+  /* Here y = round (x * 10^n) = z * 10^extra_zeroes.  */
+
+  if (z_memory == NULL)
+    return NULL;
+  digits = convert_to_decimal (z, extra_zeroes);
+  free (z_memory);
+  return digits;
+}
+
+# if NEED_PRINTF_LONG_DOUBLE
+
+/* Assuming x is finite and >= 0, and n is an integer:
+   Returns the decimal representation of round (x * 10^n).
+   Return the allocated memory - containing the decimal digits in low-to-high
+   order, terminated with a NUL character - in case of success, NULL in case
+   of memory allocation failure.  */
+static char *
+scale10_round_decimal_long_double (long double x, int n)
+{
+  int e IF_LINT(= 0);
+  mpn_t m;
+  void *memory = decode_long_double (x, &e, &m);
+  return scale10_round_decimal_decoded (e, m, memory, n);
+}
+
+# endif
+
+# if NEED_PRINTF_DOUBLE
+
+/* Assuming x is finite and >= 0, and n is an integer:
+   Returns the decimal representation of round (x * 10^n).
+   Return the allocated memory - containing the decimal digits in low-to-high
+   order, terminated with a NUL character - in case of success, NULL in case
+   of memory allocation failure.  */
+static char *
+scale10_round_decimal_double (double x, int n)
+{
+  int e IF_LINT(= 0);
+  mpn_t m;
+  void *memory = decode_double (x, &e, &m);
+  return scale10_round_decimal_decoded (e, m, memory, n);
+}
+
+# endif
+
+# if NEED_PRINTF_LONG_DOUBLE
+
+/* Assuming x is finite and > 0:
+   Return an approximation for n with 10^n <= x < 10^(n+1).
+   The approximation is usually the right n, but may be off by 1 sometimes.  */
+static int
+floorlog10l (long double x)
+{
+  int exp;
+  long double y;
+  double z;
+  double l;
+
+  /* Split into exponential part and mantissa.  */
+  y = frexpl (x, &exp);
+  if (!(y >= 0.0L && y < 1.0L))
+    abort ();
+  if (y == 0.0L)
+    return INT_MIN;
+  if (y < 0.5L)
+    {
+      while (y < (1.0L / (1 << (GMP_LIMB_BITS / 2)) / (1 << (GMP_LIMB_BITS / 2))))
+        {
+          y *= 1.0L * (1 << (GMP_LIMB_BITS / 2)) * (1 << (GMP_LIMB_BITS / 2));
+          exp -= GMP_LIMB_BITS;
+        }
+      if (y < (1.0L / (1 << 16)))
+        {
+          y *= 1.0L * (1 << 16);
+          exp -= 16;
+        }
+      if (y < (1.0L / (1 << 8)))
+        {
+          y *= 1.0L * (1 << 8);
+          exp -= 8;
+        }
+      if (y < (1.0L / (1 << 4)))
+        {
+          y *= 1.0L * (1 << 4);
+          exp -= 4;
+        }
+      if (y < (1.0L / (1 << 2)))
+        {
+          y *= 1.0L * (1 << 2);
+          exp -= 2;
+        }
+      if (y < (1.0L / (1 << 1)))
+        {
+          y *= 1.0L * (1 << 1);
+          exp -= 1;
+        }
+    }
+  if (!(y >= 0.5L && y < 1.0L))
+    abort ();
+  /* Compute an approximation for l = log2(x) = exp + log2(y).  */
+  l = exp;
+  z = y;
+  if (z < 0.70710678118654752444)
+    {
+      z *= 1.4142135623730950488;
+      l -= 0.5;
+    }
+  if (z < 0.8408964152537145431)
+    {
+      z *= 1.1892071150027210667;
+      l -= 0.25;
+    }
+  if (z < 0.91700404320467123175)
+    {
+      z *= 1.0905077326652576592;
+      l -= 0.125;
+    }
+  if (z < 0.9576032806985736469)
+    {
+      z *= 1.0442737824274138403;
+      l -= 0.0625;
+    }
+  /* Now 0.95 <= z <= 1.01.  */
+  z = 1 - z;
+  /* log2(1-z) = 1/log(2) * (- z - z^2/2 - z^3/3 - z^4/4 - ...)
+     Four terms are enough to get an approximation with error < 10^-7.  */
+  l -= 1.4426950408889634074 * z * (1.0 + z * (0.5 + z * ((1.0 / 3) + z * 0.25)));
+  /* Finally multiply with log(2)/log(10), yields an approximation for
+     log10(x).  */
+  l *= 0.30102999566398119523;
+  /* Round down to the next integer.  */
+  return (int) l + (l < 0 ? -1 : 0);
+}
+
+# endif
+
+# if NEED_PRINTF_DOUBLE
+
+/* Assuming x is finite and > 0:
+   Return an approximation for n with 10^n <= x < 10^(n+1).
+   The approximation is usually the right n, but may be off by 1 sometimes.  */
+static int
+floorlog10 (double x)
+{
+  int exp;
+  double y;
+  double z;
+  double l;
+
+  /* Split into exponential part and mantissa.  */
+  y = frexp (x, &exp);
+  if (!(y >= 0.0 && y < 1.0))
+    abort ();
+  if (y == 0.0)
+    return INT_MIN;
+  if (y < 0.5)
+    {
+      while (y < (1.0 / (1 << (GMP_LIMB_BITS / 2)) / (1 << (GMP_LIMB_BITS / 2))))
+        {
+          y *= 1.0 * (1 << (GMP_LIMB_BITS / 2)) * (1 << (GMP_LIMB_BITS / 2));
+          exp -= GMP_LIMB_BITS;
+        }
+      if (y < (1.0 / (1 << 16)))
+        {
+          y *= 1.0 * (1 << 16);
+          exp -= 16;
+        }
+      if (y < (1.0 / (1 << 8)))
+        {
+          y *= 1.0 * (1 << 8);
+          exp -= 8;
+        }
+      if (y < (1.0 / (1 << 4)))
+        {
+          y *= 1.0 * (1 << 4);
+          exp -= 4;
+        }
+      if (y < (1.0 / (1 << 2)))
+        {
+          y *= 1.0 * (1 << 2);
+          exp -= 2;
+        }
+      if (y < (1.0 / (1 << 1)))
+        {
+          y *= 1.0 * (1 << 1);
+          exp -= 1;
+        }
+    }
+  if (!(y >= 0.5 && y < 1.0))
+    abort ();
+  /* Compute an approximation for l = log2(x) = exp + log2(y).  */
+  l = exp;
+  z = y;
+  if (z < 0.70710678118654752444)
+    {
+      z *= 1.4142135623730950488;
+      l -= 0.5;
+    }
+  if (z < 0.8408964152537145431)
+    {
+      z *= 1.1892071150027210667;
+      l -= 0.25;
+    }
+  if (z < 0.91700404320467123175)
+    {
+      z *= 1.0905077326652576592;
+      l -= 0.125;
+    }
+  if (z < 0.9576032806985736469)
+    {
+      z *= 1.0442737824274138403;
+      l -= 0.0625;
+    }
+  /* Now 0.95 <= z <= 1.01.  */
+  z = 1 - z;
+  /* log2(1-z) = 1/log(2) * (- z - z^2/2 - z^3/3 - z^4/4 - ...)
+     Four terms are enough to get an approximation with error < 10^-7.  */
+  l -= 1.4426950408889634074 * z * (1.0 + z * (0.5 + z * ((1.0 / 3) + z * 0.25)));
+  /* Finally multiply with log(2)/log(10), yields an approximation for
+     log10(x).  */
+  l *= 0.30102999566398119523;
+  /* Round down to the next integer.  */
+  return (int) l + (l < 0 ? -1 : 0);
+}
+
+# endif
+
+/* Tests whether a string of digits consists of exactly PRECISION zeroes and
+   a single '1' digit.  */
+static int
+is_borderline (const char *digits, size_t precision)
+{
+  for (; precision > 0; precision--, digits++)
+    if (*digits != '0')
+      return 0;
+  if (*digits != '1')
+    return 0;
+  digits++;
+  return *digits == '\0';
+}
+
+#endif
+
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF
+
+/* Use a different function name, to make it possible that the 'wchar_t'
+   parametrization and the 'char' parametrization get compiled in the same
+   translation unit.  */
+# if WIDE_CHAR_VERSION
+#  define MAX_ROOM_NEEDED wmax_room_needed
+# else
+#  define MAX_ROOM_NEEDED max_room_needed
+# endif
+
+/* Returns the number of TCHAR_T units needed as temporary space for the result
+   of sprintf or SNPRINTF of a single conversion directive.  */
+static size_t
+MAX_ROOM_NEEDED (const arguments *ap, size_t arg_index, FCHAR_T conversion,
+                 arg_type type, int flags, size_t width, int has_precision,
+                 size_t precision, int pad_ourselves)
+{
+  size_t tmp_length;
+
+  switch (conversion)
+    {
+    case 'd': case 'i': case 'u':
+      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
+        tmp_length =
+          (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
+                          * 0.30103 /* binary -> decimal */
+                         )
+          + 1; /* turn floor into ceil */
+      else if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
+        tmp_length =
+          (unsigned int) (sizeof (unsigned long) * CHAR_BIT
+                          * 0.30103 /* binary -> decimal */
+                         )
+          + 1; /* turn floor into ceil */
+      else
+        tmp_length =
+          (unsigned int) (sizeof (unsigned int) * CHAR_BIT
+                          * 0.30103 /* binary -> decimal */
+                         )
+          + 1; /* turn floor into ceil */
+      if (tmp_length < precision)
+        tmp_length = precision;
+      /* Multiply by 2, as an estimate for FLAG_GROUP.  */
+      tmp_length = xsum (tmp_length, tmp_length);
+      /* Add 1, to account for a leading sign.  */
+      tmp_length = xsum (tmp_length, 1);
+      break;
+
+    case 'o':
+      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
+        tmp_length =
+          (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
+                          * 0.333334 /* binary -> octal */
+                         )
+          + 1; /* turn floor into ceil */
+      else if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
+        tmp_length =
+          (unsigned int) (sizeof (unsigned long) * CHAR_BIT
+                          * 0.333334 /* binary -> octal */
+                         )
+          + 1; /* turn floor into ceil */
+      else
+        tmp_length =
+          (unsigned int) (sizeof (unsigned int) * CHAR_BIT
+                          * 0.333334 /* binary -> octal */
+                         )
+          + 1; /* turn floor into ceil */
+      if (tmp_length < precision)
+        tmp_length = precision;
+      /* Add 1, to account for a leading sign.  */
+      tmp_length = xsum (tmp_length, 1);
+      break;
+
+    case 'x': case 'X':
+      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
+        tmp_length =
+          (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
+                          * 0.25 /* binary -> hexadecimal */
+                         )
+          + 1; /* turn floor into ceil */
+      else if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
+        tmp_length =
+          (unsigned int) (sizeof (unsigned long) * CHAR_BIT
+                          * 0.25 /* binary -> hexadecimal */
+                         )
+          + 1; /* turn floor into ceil */
+      else
+        tmp_length =
+          (unsigned int) (sizeof (unsigned int) * CHAR_BIT
+                          * 0.25 /* binary -> hexadecimal */
+                         )
+          + 1; /* turn floor into ceil */
+      if (tmp_length < precision)
+        tmp_length = precision;
+      /* Add 2, to account for a leading sign or alternate form.  */
+      tmp_length = xsum (tmp_length, 2);
+      break;
+
+    case 'f': case 'F':
+      if (type == TYPE_LONGDOUBLE)
+        tmp_length =
+          (unsigned int) (LDBL_MAX_EXP
+                          * 0.30103 /* binary -> decimal */
+                          * 2 /* estimate for FLAG_GROUP */
+                         )
+          + 1 /* turn floor into ceil */
+          + 10; /* sign, decimal point etc. */
+      else
+        tmp_length =
+          (unsigned int) (DBL_MAX_EXP
+                          * 0.30103 /* binary -> decimal */
+                          * 2 /* estimate for FLAG_GROUP */
+                         )
+          + 1 /* turn floor into ceil */
+          + 10; /* sign, decimal point etc. */
+      tmp_length = xsum (tmp_length, precision);
+      break;
+
+    case 'e': case 'E': case 'g': case 'G':
+      tmp_length =
+        12; /* sign, decimal point, exponent etc. */
+      tmp_length = xsum (tmp_length, precision);
+      break;
+
+    case 'a': case 'A':
+      if (type == TYPE_LONGDOUBLE)
+        tmp_length =
+          (unsigned int) (LDBL_DIG
+                          * 0.831 /* decimal -> hexadecimal */
+                         )
+          + 1; /* turn floor into ceil */
+      else
+        tmp_length =
+          (unsigned int) (DBL_DIG
+                          * 0.831 /* decimal -> hexadecimal */
+                         )
+          + 1; /* turn floor into ceil */
+      if (tmp_length < precision)
+        tmp_length = precision;
+      /* Account for sign, decimal point etc. */
+      tmp_length = xsum (tmp_length, 12);
+      break;
+
+    case 'c':
+# if HAVE_WINT_T && !WIDE_CHAR_VERSION
+      if (type == TYPE_WIDE_CHAR)
+        {
+          tmp_length = MB_CUR_MAX;
+#  if ENABLE_WCHAR_FALLBACK
+          if (tmp_length < (sizeof (wchar_t) > 2 ? 10 : 6))
+            tmp_length = (sizeof (wchar_t) > 2 ? 10 : 6);
+#  endif
+        }
+      else
+# endif
+        tmp_length = 1;
+      break;
+
+    case 's':
+# if HAVE_WCHAR_T
+      if (type == TYPE_WIDE_STRING)
+        {
+#  if WIDE_CHAR_VERSION
+          /* ISO C says about %ls in fwprintf:
+               "If the precision is not specified or is greater than the size
+                of the array, the array shall contain a null wide character."
+             So if there is a precision, we must not use wcslen.  */
+          const wchar_t *arg = ap->arg[arg_index].a.a_wide_string;
+
+          if (has_precision)
+            tmp_length = local_wcsnlen (arg, precision);
+          else
+            tmp_length = local_wcslen (arg);
+#  else
+          /* ISO C says about %ls in fprintf:
+               "If a precision is specified, no more than that many bytes are
+                written (including shift sequences, if any), and the array
+                shall contain a null wide character if, to equal the multibyte
+                character sequence length given by the precision, the function
+                would need to access a wide character one past the end of the
+                array."
+             So if there is a precision, we must not use wcslen.  */
+          /* This case has already been handled separately in VASNPRINTF.  */
+          abort ();
+#  endif
+        }
+      else
+# endif
+        {
+# if WIDE_CHAR_VERSION
+          /* ISO C says about %s in fwprintf:
+               "If the precision is not specified or is greater than the size
+                of the converted array, the converted array shall contain a
+                null wide character."
+             So if there is a precision, we must not use strlen.  */
+          /* This case has already been handled separately in VASNPRINTF.  */
+          abort ();
+# else
+          /* ISO C says about %s in fprintf:
+               "If the precision is not specified or greater than the size of
+                the array, the array shall contain a null character."
+             So if there is a precision, we must not use strlen.  */
+          const char *arg = ap->arg[arg_index].a.a_string;
+
+          if (has_precision)
+            tmp_length = local_strnlen (arg, precision);
+          else
+            tmp_length = strlen (arg);
+# endif
+        }
+      break;
+
+    case 'p':
+      tmp_length =
+        (unsigned int) (sizeof (void *) * CHAR_BIT
+                        * 0.25 /* binary -> hexadecimal */
+                       )
+          + 1 /* turn floor into ceil */
+          + 2; /* account for leading 0x */
+      break;
+
+    default:
+      abort ();
+    }
+
+  if (!pad_ourselves)
+    {
+# if ENABLE_UNISTDIO
+      /* Padding considers the number of characters, therefore the number of
+         elements after padding may be
+           > max (tmp_length, width)
+         but is certainly
+           <= tmp_length + width.  */
+      tmp_length = xsum (tmp_length, width);
+# else
+      /* Padding considers the number of elements, says POSIX.  */
+      if (tmp_length < width)
+        tmp_length = width;
+# endif
+    }
+
+  tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
+
+  return tmp_length;
+}
+
+#endif
+
+DCHAR_T *
+VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+            const FCHAR_T *format, va_list args)
+{
+  DIRECTIVES d;
+  arguments a;
+
+  if (PRINTF_PARSE (format, &d, &a) < 0)
+    /* errno is already set.  */
+    return NULL;
+
+  /* Frees the memory allocated by this function.  Preserves errno.  */
+#define CLEANUP() \
+  if (d.dir != d.direct_alloc_dir)                                      \
+    free (d.dir);                                                       \
+  if (a.arg != a.direct_alloc_arg)                                      \
+    free (a.arg);
+
+  if (PRINTF_FETCHARGS (args, &a) < 0)
+    {
+      CLEANUP ();
+      errno = EINVAL;
+      return NULL;
+    }
+
+  {
+    size_t buf_neededlength;
+    TCHAR_T *buf;
+    TCHAR_T *buf_malloced;
+    const FCHAR_T *cp;
+    size_t i;
+    DIRECTIVE *dp;
+    /* Output string accumulator.  */
+    DCHAR_T *result;
+    size_t allocated;
+    size_t length;
+
+    /* Allocate a small buffer that will hold a directive passed to
+       sprintf or snprintf.  */
+    buf_neededlength =
+      xsum4 (7, d.max_width_length, d.max_precision_length, 6);
+#if HAVE_ALLOCA
+    if (buf_neededlength < 4000 / sizeof (TCHAR_T))
+      {
+        buf = (TCHAR_T *) alloca (buf_neededlength * sizeof (TCHAR_T));
+        buf_malloced = NULL;
+      }
+    else
+#endif
+      {
+        size_t buf_memsize = xtimes (buf_neededlength, sizeof (TCHAR_T));
+        if (size_overflow_p (buf_memsize))
+          goto out_of_memory_1;
+        buf = (TCHAR_T *) malloc (buf_memsize);
+        if (buf == NULL)
+          goto out_of_memory_1;
+        buf_malloced = buf;
+      }
+
+    if (resultbuf != NULL)
+      {
+        result = resultbuf;
+        allocated = *lengthp;
+      }
+    else
+      {
+        result = NULL;
+        allocated = 0;
+      }
+    length = 0;
+    /* Invariants:
+       result is either == resultbuf or == NULL or malloc-allocated.
+       If length > 0, then result != NULL.  */
+
+    /* Ensures that allocated >= needed.  Aborts through a jump to
+       out_of_memory if needed is SIZE_MAX or otherwise too big.  */
+#define ENSURE_ALLOCATION_ELSE(needed, oom_statement) \
+    if ((needed) > allocated)                                                \
+      {                                                                      \
+        size_t memory_size;                                                  \
+        DCHAR_T *memory;                                                     \
+                                                                             \
+        allocated = (allocated > 0 ? xtimes (allocated, 2) : 12);            \
+        if ((needed) > allocated)                                            \
+          allocated = (needed);                                              \
+        memory_size = xtimes (allocated, sizeof (DCHAR_T));                  \
+        if (size_overflow_p (memory_size))                                   \
+          oom_statement                                                      \
+        if (result == resultbuf || result == NULL)                           \
+          memory = (DCHAR_T *) malloc (memory_size);                         \
+        else                                                                 \
+          memory = (DCHAR_T *) realloc (result, memory_size);                \
+        if (memory == NULL)                                                  \
+          oom_statement                                                      \
+        if (result == resultbuf && length > 0)                               \
+          DCHAR_CPY (memory, result, length);                                \
+        result = memory;                                                     \
+      }
+#define ENSURE_ALLOCATION(needed) \
+  ENSURE_ALLOCATION_ELSE((needed), goto out_of_memory; )
+
+    for (cp = format, i = 0, dp = &d.dir[0]; ; cp = dp->dir_end, i++, dp++)
+      {
+        if (cp != dp->dir_start)
+          {
+            size_t n = dp->dir_start - cp;
+            size_t augmented_length = xsum (length, n);
+
+            ENSURE_ALLOCATION (augmented_length);
+            /* This copies a piece of FCHAR_T[] into a DCHAR_T[].  Here we
+               need that the format string contains only ASCII characters
+               if FCHAR_T and DCHAR_T are not the same type.  */
+            if (sizeof (FCHAR_T) == sizeof (DCHAR_T))
+              {
+                DCHAR_CPY (result + length, (const DCHAR_T *) cp, n);
+                length = augmented_length;
+              }
+            else
+              {
+                do
+                  result[length++] = *cp++;
+                while (--n > 0);
+              }
+          }
+        if (i == d.count)
+          break;
+
+        /* Execute a single directive.  */
+        if (dp->conversion == '%')
+          {
+            size_t augmented_length;
+
+            if (!(dp->arg_index == ARG_NONE))
+              abort ();
+            augmented_length = xsum (length, 1);
+            ENSURE_ALLOCATION (augmented_length);
+            result[length] = '%';
+            length = augmented_length;
+          }
+        else
+          {
+            if (!(dp->arg_index != ARG_NONE))
+              abort ();
+
+            if (dp->conversion == 'n')
+              {
+                switch (a.arg[dp->arg_index].type)
+                  {
+                  case TYPE_COUNT_SCHAR_POINTER:
+                    *a.arg[dp->arg_index].a.a_count_schar_pointer = length;
+                    break;
+                  case TYPE_COUNT_SHORT_POINTER:
+                    *a.arg[dp->arg_index].a.a_count_short_pointer = length;
+                    break;
+                  case TYPE_COUNT_INT_POINTER:
+                    *a.arg[dp->arg_index].a.a_count_int_pointer = length;
+                    break;
+                  case TYPE_COUNT_LONGINT_POINTER:
+                    *a.arg[dp->arg_index].a.a_count_longint_pointer = length;
+                    break;
+                  case TYPE_COUNT_LONGLONGINT_POINTER:
+                    *a.arg[dp->arg_index].a.a_count_longlongint_pointer = length;
+                    break;
+                  default:
+                    abort ();
+                  }
+              }
+#if ENABLE_UNISTDIO
+            /* The unistdio extensions.  */
+            else if (dp->conversion == 'U')
+              {
+                arg_type type = a.arg[dp->arg_index].type;
+                int flags = dp->flags;
+                int has_width;
+                size_t width;
+                int has_precision;
+                size_t precision;
+
+                has_width = 0;
+                width = 0;
+                if (dp->width_start != dp->width_end)
+                  {
+                    if (dp->width_arg_index != ARG_NONE)
+                      {
+                        int arg;
+
+                        if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->width_arg_index].a.a_int;
+                        width = arg;
+                        if (arg < 0)
+                          {
+                            /* "A negative field width is taken as a '-' flag
+                                followed by a positive field width."  */
+                            flags |= FLAG_LEFT;
+                            width = -width;
+                          }
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->width_start;
+
+                        do
+                          width = xsum (xtimes (width, 10), *digitp++ - '0');
+                        while (digitp != dp->width_end);
+                      }
+                    has_width = 1;
+                  }
+
+                has_precision = 0;
+                precision = 0;
+                if (dp->precision_start != dp->precision_end)
+                  {
+                    if (dp->precision_arg_index != ARG_NONE)
+                      {
+                        int arg;
+
+                        if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->precision_arg_index].a.a_int;
+                        /* "A negative precision is taken as if the precision
+                            were omitted."  */
+                        if (arg >= 0)
+                          {
+                            precision = arg;
+                            has_precision = 1;
+                          }
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->precision_start + 1;
+
+                        precision = 0;
+                        while (digitp != dp->precision_end)
+                          precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+                        has_precision = 1;
+                      }
+                  }
+
+                switch (type)
+                  {
+                  case TYPE_U8_STRING:
+                    {
+                      const uint8_t *arg = a.arg[dp->arg_index].a.a_u8_string;
+                      const uint8_t *arg_end;
+                      size_t characters;
+
+                      if (has_precision)
+                        {
+                          /* Use only PRECISION characters, from the left.  */
+                          arg_end = arg;
+                          characters = 0;
+                          for (; precision > 0; precision--)
+                            {
+                              int count = u8_strmblen (arg_end);
+                              if (count == 0)
+                                break;
+                              if (count < 0)
+                                {
+                                  if (!(result == resultbuf || result == NULL))
+                                    free (result);
+                                  if (buf_malloced != NULL)
+                                    free (buf_malloced);
+                                  CLEANUP ();
+                                  errno = EILSEQ;
+                                  return NULL;
+                                }
+                              arg_end += count;
+                              characters++;
+                            }
+                        }
+                      else if (has_width)
+                        {
+                          /* Use the entire string, and count the number of
+                             characters.  */
+                          arg_end = arg;
+                          characters = 0;
+                          for (;;)
+                            {
+                              int count = u8_strmblen (arg_end);
+                              if (count == 0)
+                                break;
+                              if (count < 0)
+                                {
+                                  if (!(result == resultbuf || result == NULL))
+                                    free (result);
+                                  if (buf_malloced != NULL)
+                                    free (buf_malloced);
+                                  CLEANUP ();
+                                  errno = EILSEQ;
+                                  return NULL;
+                                }
+                              arg_end += count;
+                              characters++;
+                            }
+                        }
+                      else
+                        {
+                          /* Use the entire string.  */
+                          arg_end = arg + u8_strlen (arg);
+                          /* The number of characters doesn't matter.  */
+                          characters = 0;
+                        }
+
+                      if (characters < width && !(dp->flags & FLAG_LEFT))
+                        {
+                          size_t n = width - characters;
+                          ENSURE_ALLOCATION (xsum (length, n));
+                          DCHAR_SET (result + length, ' ', n);
+                          length += n;
+                        }
+
+# if DCHAR_IS_UINT8_T
+                      {
+                        size_t n = arg_end - arg;
+                        ENSURE_ALLOCATION (xsum (length, n));
+                        DCHAR_CPY (result + length, arg, n);
+                        length += n;
+                      }
+# else
+                      { /* Convert.  */
+                        DCHAR_T *converted = result + length;
+                        size_t converted_len = allocated - length;
+#  if DCHAR_IS_TCHAR
+                        /* Convert from UTF-8 to locale encoding.  */
+                        converted =
+                          u8_conv_to_encoding (locale_charset (),
+                                               iconveh_question_mark,
+                                               arg, arg_end - arg, NULL,
+                                               converted, &converted_len);
+#  else
+                        /* Convert from UTF-8 to UTF-16/UTF-32.  */
+                        converted =
+                          U8_TO_DCHAR (arg, arg_end - arg,
+                                       converted, &converted_len);
+#  endif
+                        if (converted == NULL)
+                          {
+                            if (!(result == resultbuf || result == NULL))
+                              free (result);
+                            if (buf_malloced != NULL)
+                              free (buf_malloced);
+                            CLEANUP ();
+                            return NULL;
+                          }
+                        if (converted != result + length)
+                          {
+                            ENSURE_ALLOCATION_ELSE (xsum (length, converted_len),
+                                                    { free (converted); goto out_of_memory; });
+                            DCHAR_CPY (result + length, converted, converted_len);
+                            free (converted);
+                          }
+                        length += converted_len;
+                      }
+# endif
+
+                      if (characters < width && (dp->flags & FLAG_LEFT))
+                        {
+                          size_t n = width - characters;
+                          ENSURE_ALLOCATION (xsum (length, n));
+                          DCHAR_SET (result + length, ' ', n);
+                          length += n;
+                        }
+                    }
+                    break;
+
+                  case TYPE_U16_STRING:
+                    {
+                      const uint16_t *arg = a.arg[dp->arg_index].a.a_u16_string;
+                      const uint16_t *arg_end;
+                      size_t characters;
+
+                      if (has_precision)
+                        {
+                          /* Use only PRECISION characters, from the left.  */
+                          arg_end = arg;
+                          characters = 0;
+                          for (; precision > 0; precision--)
+                            {
+                              int count = u16_strmblen (arg_end);
+                              if (count == 0)
+                                break;
+                              if (count < 0)
+                                {
+                                  if (!(result == resultbuf || result == NULL))
+                                    free (result);
+                                  if (buf_malloced != NULL)
+                                    free (buf_malloced);
+                                  CLEANUP ();
+                                  errno = EILSEQ;
+                                  return NULL;
+                                }
+                              arg_end += count;
+                              characters++;
+                            }
+                        }
+                      else if (has_width)
+                        {
+                          /* Use the entire string, and count the number of
+                             characters.  */
+                          arg_end = arg;
+                          characters = 0;
+                          for (;;)
+                            {
+                              int count = u16_strmblen (arg_end);
+                              if (count == 0)
+                                break;
+                              if (count < 0)
+                                {
+                                  if (!(result == resultbuf || result == NULL))
+                                    free (result);
+                                  if (buf_malloced != NULL)
+                                    free (buf_malloced);
+                                  CLEANUP ();
+                                  errno = EILSEQ;
+                                  return NULL;
+                                }
+                              arg_end += count;
+                              characters++;
+                            }
+                        }
+                      else
+                        {
+                          /* Use the entire string.  */
+                          arg_end = arg + u16_strlen (arg);
+                          /* The number of characters doesn't matter.  */
+                          characters = 0;
+                        }
+
+                      if (characters < width && !(dp->flags & FLAG_LEFT))
+                        {
+                          size_t n = width - characters;
+                          ENSURE_ALLOCATION (xsum (length, n));
+                          DCHAR_SET (result + length, ' ', n);
+                          length += n;
+                        }
+
+# if DCHAR_IS_UINT16_T
+                      {
+                        size_t n = arg_end - arg;
+                        ENSURE_ALLOCATION (xsum (length, n));
+                        DCHAR_CPY (result + length, arg, n);
+                        length += n;
+                      }
+# else
+                      { /* Convert.  */
+                        DCHAR_T *converted = result + length;
+                        size_t converted_len = allocated - length;
+#  if DCHAR_IS_TCHAR
+                        /* Convert from UTF-16 to locale encoding.  */
+                        converted =
+                          u16_conv_to_encoding (locale_charset (),
+                                                iconveh_question_mark,
+                                                arg, arg_end - arg, NULL,
+                                                converted, &converted_len);
+#  else
+                        /* Convert from UTF-16 to UTF-8/UTF-32.  */
+                        converted =
+                          U16_TO_DCHAR (arg, arg_end - arg,
+                                        converted, &converted_len);
+#  endif
+                        if (converted == NULL)
+                          {
+                            if (!(result == resultbuf || result == NULL))
+                              free (result);
+                            if (buf_malloced != NULL)
+                              free (buf_malloced);
+                            CLEANUP ();
+                            return NULL;
+                          }
+                        if (converted != result + length)
+                          {
+                            ENSURE_ALLOCATION_ELSE (xsum (length, converted_len),
+                                                    { free (converted); goto out_of_memory; });
+                            DCHAR_CPY (result + length, converted, converted_len);
+                            free (converted);
+                          }
+                        length += converted_len;
+                      }
+# endif
+
+                      if (characters < width && (dp->flags & FLAG_LEFT))
+                        {
+                          size_t n = width - characters;
+                          ENSURE_ALLOCATION (xsum (length, n));
+                          DCHAR_SET (result + length, ' ', n);
+                          length += n;
+                        }
+                    }
+                    break;
+
+                  case TYPE_U32_STRING:
+                    {
+                      const uint32_t *arg = a.arg[dp->arg_index].a.a_u32_string;
+                      const uint32_t *arg_end;
+                      size_t characters;
+
+                      if (has_precision)
+                        {
+                          /* Use only PRECISION characters, from the left.  */
+                          arg_end = arg;
+                          characters = 0;
+                          for (; precision > 0; precision--)
+                            {
+                              int count = u32_strmblen (arg_end);
+                              if (count == 0)
+                                break;
+                              if (count < 0)
+                                {
+                                  if (!(result == resultbuf || result == NULL))
+                                    free (result);
+                                  if (buf_malloced != NULL)
+                                    free (buf_malloced);
+                                  CLEANUP ();
+                                  errno = EILSEQ;
+                                  return NULL;
+                                }
+                              arg_end += count;
+                              characters++;
+                            }
+                        }
+                      else if (has_width)
+                        {
+                          /* Use the entire string, and count the number of
+                             characters.  */
+                          arg_end = arg;
+                          characters = 0;
+                          for (;;)
+                            {
+                              int count = u32_strmblen (arg_end);
+                              if (count == 0)
+                                break;
+                              if (count < 0)
+                                {
+                                  if (!(result == resultbuf || result == NULL))
+                                    free (result);
+                                  if (buf_malloced != NULL)
+                                    free (buf_malloced);
+                                  CLEANUP ();
+                                  errno = EILSEQ;
+                                  return NULL;
+                                }
+                              arg_end += count;
+                              characters++;
+                            }
+                        }
+                      else
+                        {
+                          /* Use the entire string.  */
+                          arg_end = arg + u32_strlen (arg);
+                          /* The number of characters doesn't matter.  */
+                          characters = 0;
+                        }
+
+                      if (characters < width && !(dp->flags & FLAG_LEFT))
+                        {
+                          size_t n = width - characters;
+                          ENSURE_ALLOCATION (xsum (length, n));
+                          DCHAR_SET (result + length, ' ', n);
+                          length += n;
+                        }
+
+# if DCHAR_IS_UINT32_T
+                      {
+                        size_t n = arg_end - arg;
+                        ENSURE_ALLOCATION (xsum (length, n));
+                        DCHAR_CPY (result + length, arg, n);
+                        length += n;
+                      }
+# else
+                      { /* Convert.  */
+                        DCHAR_T *converted = result + length;
+                        size_t converted_len = allocated - length;
+#  if DCHAR_IS_TCHAR
+                        /* Convert from UTF-32 to locale encoding.  */
+                        converted =
+                          u32_conv_to_encoding (locale_charset (),
+                                                iconveh_question_mark,
+                                                arg, arg_end - arg, NULL,
+                                                converted, &converted_len);
+#  else
+                        /* Convert from UTF-32 to UTF-8/UTF-16.  */
+                        converted =
+                          U32_TO_DCHAR (arg, arg_end - arg,
+                                        converted, &converted_len);
+#  endif
+                        if (converted == NULL)
+                          {
+                            if (!(result == resultbuf || result == NULL))
+                              free (result);
+                            if (buf_malloced != NULL)
+                              free (buf_malloced);
+                            CLEANUP ();
+                            return NULL;
+                          }
+                        if (converted != result + length)
+                          {
+                            ENSURE_ALLOCATION_ELSE (xsum (length, converted_len),
+                                                    { free (converted); goto out_of_memory; });
+                            DCHAR_CPY (result + length, converted, converted_len);
+                            free (converted);
+                          }
+                        length += converted_len;
+                      }
+# endif
+
+                      if (characters < width && (dp->flags & FLAG_LEFT))
+                        {
+                          size_t n = width - characters;
+                          ENSURE_ALLOCATION (xsum (length, n));
+                          DCHAR_SET (result + length, ' ', n);
+                          length += n;
+                        }
+                    }
+                    break;
+
+                  default:
+                    abort ();
+                  }
+              }
+#endif
+#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL) || ENABLE_WCHAR_FALLBACK) && HAVE_WCHAR_T
+            else if (dp->conversion == 's'
+# if WIDE_CHAR_VERSION
+                     && a.arg[dp->arg_index].type != TYPE_WIDE_STRING
+# else
+                     && a.arg[dp->arg_index].type == TYPE_WIDE_STRING
+# endif
+                    )
+              {
+                /* The normal handling of the 's' directive below requires
+                   allocating a temporary buffer.  The determination of its
+                   length (tmp_length), in the case when a precision is
+                   specified, below requires a conversion between a char[]
+                   string and a wchar_t[] wide string.  It could be done, but
+                   we have no guarantee that the implementation of sprintf will
+                   use the exactly same algorithm.  Without this guarantee, it
+                   is possible to have buffer overrun bugs.  In order to avoid
+                   such bugs, we implement the entire processing of the 's'
+                   directive ourselves.  */
+                int flags = dp->flags;
+                int has_width;
+                size_t width;
+                int has_precision;
+                size_t precision;
+
+                has_width = 0;
+                width = 0;
+                if (dp->width_start != dp->width_end)
+                  {
+                    if (dp->width_arg_index != ARG_NONE)
+                      {
+                        int arg;
+
+                        if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->width_arg_index].a.a_int;
+                        width = arg;
+                        if (arg < 0)
+                          {
+                            /* "A negative field width is taken as a '-' flag
+                                followed by a positive field width."  */
+                            flags |= FLAG_LEFT;
+                            width = -width;
+                          }
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->width_start;
+
+                        do
+                          width = xsum (xtimes (width, 10), *digitp++ - '0');
+                        while (digitp != dp->width_end);
+                      }
+                    has_width = 1;
+                  }
+
+                has_precision = 0;
+                precision = 6;
+                if (dp->precision_start != dp->precision_end)
+                  {
+                    if (dp->precision_arg_index != ARG_NONE)
+                      {
+                        int arg;
+
+                        if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->precision_arg_index].a.a_int;
+                        /* "A negative precision is taken as if the precision
+                            were omitted."  */
+                        if (arg >= 0)
+                          {
+                            precision = arg;
+                            has_precision = 1;
+                          }
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->precision_start + 1;
+
+                        precision = 0;
+                        while (digitp != dp->precision_end)
+                          precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+                        has_precision = 1;
+                      }
+                  }
+
+# if WIDE_CHAR_VERSION
+                /* %s in vasnwprintf.  See the specification of fwprintf.  */
+                {
+                  const char *arg = a.arg[dp->arg_index].a.a_string;
+                  const char *arg_end;
+                  size_t characters;
+
+                  if (has_precision)
+                    {
+                      /* Use only as many bytes as needed to produce PRECISION
+                         wide characters, from the left.  */
+#  if HAVE_MBRTOWC
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+                      arg_end = arg;
+                      characters = 0;
+                      for (; precision > 0; precision--)
+                        {
+                          int count;
+#  if HAVE_MBRTOWC
+                          count = mbrlen (arg_end, MB_CUR_MAX, &state);
+#  else
+                          count = mblen (arg_end, MB_CUR_MAX);
+#  endif
+                          if (count == 0)
+                            /* Found the terminating NUL.  */
+                            break;
+                          if (count < 0)
+                            {
+                              /* Invalid or incomplete multibyte character.  */
+                              if (!(result == resultbuf || result == NULL))
+                                free (result);
+                              if (buf_malloced != NULL)
+                                free (buf_malloced);
+                              CLEANUP ();
+                              errno = EILSEQ;
+                              return NULL;
+                            }
+                          arg_end += count;
+                          characters++;
+                        }
+                    }
+                  else if (has_width)
+                    {
+                      /* Use the entire string, and count the number of wide
+                         characters.  */
+#  if HAVE_MBRTOWC
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+                      arg_end = arg;
+                      characters = 0;
+                      for (;;)
+                        {
+                          int count;
+#  if HAVE_MBRTOWC
+                          count = mbrlen (arg_end, MB_CUR_MAX, &state);
+#  else
+                          count = mblen (arg_end, MB_CUR_MAX);
+#  endif
+                          if (count == 0)
+                            /* Found the terminating NUL.  */
+                            break;
+                          if (count < 0)
+                            {
+                              /* Invalid or incomplete multibyte character.  */
+                              if (!(result == resultbuf || result == NULL))
+                                free (result);
+                              if (buf_malloced != NULL)
+                                free (buf_malloced);
+                              CLEANUP ();
+                              errno = EILSEQ;
+                              return NULL;
+                            }
+                          arg_end += count;
+                          characters++;
+                        }
+                    }
+                  else
+                    {
+                      /* Use the entire string.  */
+                      arg_end = arg + strlen (arg);
+                      /* The number of characters doesn't matter.  */
+                      characters = 0;
+                    }
+
+                  if (characters < width && !(dp->flags & FLAG_LEFT))
+                    {
+                      size_t n = width - characters;
+                      ENSURE_ALLOCATION (xsum (length, n));
+                      DCHAR_SET (result + length, ' ', n);
+                      length += n;
+                    }
+
+                  if (has_precision || has_width)
+                    {
+                      /* We know the number of wide characters in advance.  */
+                      size_t remaining;
+#  if HAVE_MBRTOWC
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+                      ENSURE_ALLOCATION (xsum (length, characters));
+                      for (remaining = characters; remaining > 0; remaining--)
+                        {
+                          wchar_t wc;
+                          int count;
+#  if HAVE_MBRTOWC
+                          count = mbrtowc (&wc, arg, arg_end - arg, &state);
+#  else
+                          count = mbtowc (&wc, arg, arg_end - arg);
+#  endif
+                          if (count <= 0)
+                            /* mbrtowc not consistent with mbrlen, or mbtowc
+                               not consistent with mblen.  */
+                            abort ();
+                          result[length++] = wc;
+                          arg += count;
+                        }
+                      if (!(arg == arg_end))
+                        abort ();
+                    }
+                  else
+                    {
+#  if HAVE_MBRTOWC
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+                      while (arg < arg_end)
+                        {
+                          wchar_t wc;
+                          int count;
+#  if HAVE_MBRTOWC
+                          count = mbrtowc (&wc, arg, arg_end - arg, &state);
+#  else
+                          count = mbtowc (&wc, arg, arg_end - arg);
+#  endif
+                          if (count <= 0)
+                            /* mbrtowc not consistent with mbrlen, or mbtowc
+                               not consistent with mblen.  */
+                            abort ();
+                          ENSURE_ALLOCATION (xsum (length, 1));
+                          result[length++] = wc;
+                          arg += count;
+                        }
+                    }
+
+                  if (characters < width && (dp->flags & FLAG_LEFT))
+                    {
+                      size_t n = width - characters;
+                      ENSURE_ALLOCATION (xsum (length, n));
+                      DCHAR_SET (result + length, ' ', n);
+                      length += n;
+                    }
+                }
+# else
+                /* %ls in vasnprintf.  See the specification of fprintf.  */
+                {
+                  const wchar_t *arg = a.arg[dp->arg_index].a.a_wide_string;
+                  const wchar_t *arg_end;
+                  size_t characters;
+#  if !DCHAR_IS_TCHAR
+                  /* This code assumes that TCHAR_T is 'char'.  */
+                  verify (sizeof (TCHAR_T) == 1);
+                  TCHAR_T *tmpsrc;
+                  DCHAR_T *tmpdst;
+                  size_t tmpdst_len;
+#  endif
+                  size_t w;
+
+                  if (has_precision)
+                    {
+                      /* Use only as many wide characters as needed to produce
+                         at most PRECISION bytes, from the left.  */
+#  if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+                      arg_end = arg;
+                      characters = 0;
+                      while (precision > 0)
+                        {
+                          char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                          int count;
+
+                          if (*arg_end == 0)
+                            /* Found the terminating null wide character.  */
+                            break;
+                          count = local_wcrtomb (cbuf, *arg_end, &state);
+                          if (count < 0)
+                            {
+                              /* Cannot convert.  */
+                              if (!(result == resultbuf || result == NULL))
+                                free (result);
+                              if (buf_malloced != NULL)
+                                free (buf_malloced);
+                              CLEANUP ();
+                              errno = EILSEQ;
+                              return NULL;
+                            }
+                          if (precision < (unsigned int) count)
+                            break;
+                          arg_end++;
+                          characters += count;
+                          precision -= count;
+                        }
+                    }
+#  if DCHAR_IS_TCHAR
+                  else if (has_width)
+#  else
+                  else
+#  endif
+                    {
+                      /* Use the entire string, and count the number of
+                         bytes.  */
+#  if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+                      arg_end = arg;
+                      characters = 0;
+                      for (;;)
+                        {
+                          char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                          int count;
+
+                          if (*arg_end == 0)
+                            /* Found the terminating null wide character.  */
+                            break;
+                          count = local_wcrtomb (cbuf, *arg_end, &state);
+                          if (count < 0)
+                            {
+                              /* Cannot convert.  */
+                              if (!(result == resultbuf || result == NULL))
+                                free (result);
+                              if (buf_malloced != NULL)
+                                free (buf_malloced);
+                              CLEANUP ();
+                              errno = EILSEQ;
+                              return NULL;
+                            }
+                          arg_end++;
+                          characters += count;
+                        }
+                    }
+#  if DCHAR_IS_TCHAR
+                  else
+                    {
+                      /* Use the entire string.  */
+                      arg_end = arg + local_wcslen (arg);
+                      /* The number of bytes doesn't matter.  */
+                      characters = 0;
+                    }
+#  endif
+
+#  if !DCHAR_IS_TCHAR
+                  /* Convert the string into a piece of temporary memory.  */
+                  tmpsrc = (TCHAR_T *) malloc (characters * sizeof (TCHAR_T));
+                  if (tmpsrc == NULL)
+                    goto out_of_memory;
+                  {
+                    TCHAR_T *tmpptr = tmpsrc;
+                    size_t remaining;
+#   if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+                    mbstate_t state;
+                    memset (&state, '\0', sizeof (mbstate_t));
+#   endif
+                    for (remaining = characters; remaining > 0; )
+                      {
+                        char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                        int count;
+
+                        if (*arg == 0)
+                          abort ();
+                        count = local_wcrtomb (cbuf, *arg, &state);
+                        if (count <= 0)
+                          /* Inconsistency.  */
+                          abort ();
+                        memcpy (tmpptr, cbuf, count);
+                        tmpptr += count;
+                        arg++;
+                        remaining -= count;
+                      }
+                    if (!(arg == arg_end))
+                      abort ();
+                  }
+
+                  /* Convert from TCHAR_T[] to DCHAR_T[].  */
+                  tmpdst =
+                    DCHAR_CONV_FROM_ENCODING (locale_charset (),
+                                              iconveh_question_mark,
+                                              tmpsrc, characters,
+                                              NULL,
+                                              NULL, &tmpdst_len);
+                  if (tmpdst == NULL)
+                    {
+                      free (tmpsrc);
+                      if (!(result == resultbuf || result == NULL))
+                        free (result);
+                      if (buf_malloced != NULL)
+                        free (buf_malloced);
+                      CLEANUP ();
+                      return NULL;
+                    }
+                  free (tmpsrc);
+#  endif
+
+                  if (has_width)
+                    {
+#  if ENABLE_UNISTDIO
+                      /* Outside POSIX, it's preferable to compare the width
+                         against the number of _characters_ of the converted
+                         value.  */
+                      w = DCHAR_MBSNLEN (result + length, characters);
+#  else
+                      /* The width is compared against the number of _bytes_
+                         of the converted value, says POSIX.  */
+                      w = characters;
+#  endif
+                    }
+                  else
+                    /* w doesn't matter.  */
+                    w = 0;
+
+                  if (w < width && !(dp->flags & FLAG_LEFT))
+                    {
+                      size_t n = width - w;
+                      ENSURE_ALLOCATION (xsum (length, n));
+                      DCHAR_SET (result + length, ' ', n);
+                      length += n;
+                    }
+
+#  if DCHAR_IS_TCHAR
+                  if (has_precision || has_width)
+                    {
+                      /* We know the number of bytes in advance.  */
+                      size_t remaining;
+#   if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#   endif
+                      ENSURE_ALLOCATION (xsum (length, characters));
+                      for (remaining = characters; remaining > 0; )
+                        {
+                          char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                          int count;
+
+                          if (*arg == 0)
+                            abort ();
+                          count = local_wcrtomb (cbuf, *arg, &state);
+                          if (count <= 0)
+                            /* Inconsistency.  */
+                            abort ();
+                          memcpy (result + length, cbuf, count);
+                          length += count;
+                          arg++;
+                          remaining -= count;
+                        }
+                      if (!(arg == arg_end))
+                        abort ();
+                    }
+                  else
+                    {
+#   if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#   endif
+                      while (arg < arg_end)
+                        {
+                          char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                          int count;
+
+                          if (*arg == 0)
+                            abort ();
+                          count = local_wcrtomb (cbuf, *arg, &state);
+                          if (count <= 0)
+                            {
+                              /* Cannot convert.  */
+                              if (!(result == resultbuf || result == NULL))
+                                free (result);
+                              if (buf_malloced != NULL)
+                                free (buf_malloced);
+                              CLEANUP ();
+                              errno = EILSEQ;
+                              return NULL;
+                            }
+                          ENSURE_ALLOCATION (xsum (length, count));
+                          memcpy (result + length, cbuf, count);
+                          length += count;
+                          arg++;
+                        }
+                    }
+#  else
+                  ENSURE_ALLOCATION_ELSE (xsum (length, tmpdst_len),
+                                          { free (tmpdst); goto out_of_memory; });
+                  DCHAR_CPY (result + length, tmpdst, tmpdst_len);
+                  free (tmpdst);
+                  length += tmpdst_len;
+#  endif
+
+                  if (w < width && (dp->flags & FLAG_LEFT))
+                    {
+                      size_t n = width - w;
+                      ENSURE_ALLOCATION (xsum (length, n));
+                      DCHAR_SET (result + length, ' ', n);
+                      length += n;
+                    }
+                }
+# endif
+              }
+#endif
+#if ENABLE_WCHAR_FALLBACK && HAVE_WINT_T && !WIDE_CHAR_VERSION
+            else if (dp->conversion == 'c'
+                     && a.arg[dp->arg_index].type == TYPE_WIDE_CHAR)
+              {
+                /* Implement the 'lc' directive ourselves, in order to provide
+                   the fallback that avoids EILSEQ.  */
+                int flags = dp->flags;
+                int has_width;
+                size_t width;
+
+                has_width = 0;
+                width = 0;
+                if (dp->width_start != dp->width_end)
+                  {
+                    if (dp->width_arg_index != ARG_NONE)
+                      {
+                        int arg;
+
+                        if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->width_arg_index].a.a_int;
+                        width = arg;
+                        if (arg < 0)
+                          {
+                            /* "A negative field width is taken as a '-' flag
+                                followed by a positive field width."  */
+                            flags |= FLAG_LEFT;
+                            width = -width;
+                          }
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->width_start;
+
+                        do
+                          width = xsum (xtimes (width, 10), *digitp++ - '0');
+                        while (digitp != dp->width_end);
+                      }
+                    has_width = 1;
+                  }
+
+                /* %lc in vasnprintf.  See the specification of fprintf.  */
+                {
+                  wchar_t arg = (wchar_t) a.arg[dp->arg_index].a.a_wide_char;
+                  size_t characters;
+# if !DCHAR_IS_TCHAR
+                  /* This code assumes that TCHAR_T is 'char'.  */
+                  verify (sizeof (TCHAR_T) == 1);
+                  TCHAR_T tmpsrc[64]; /* Assume MB_CUR_MAX <= 64.  */
+                  DCHAR_T *tmpdst;
+                  size_t tmpdst_len;
+# endif
+                  size_t w;
+
+# if DCHAR_IS_TCHAR
+                  if (has_width)
+# endif
+                    {
+                      /* Count the number of bytes.  */
+                      characters = 0;
+                      if (arg != 0)
+                        {
+                          char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                          int count;
+# if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+                          mbstate_t state;
+                          memset (&state, '\0', sizeof (mbstate_t));
+# endif
+
+                          count = local_wcrtomb (cbuf, arg, &state);
+                          if (count < 0)
+                            /* Inconsistency.  */
+                            abort ();
+                          characters = count;
+                        }
+                    }
+# if DCHAR_IS_TCHAR
+                  else
+                    {
+                      /* The number of bytes doesn't matter.  */
+                      characters = 0;
+                    }
+# endif
+
+# if !DCHAR_IS_TCHAR
+                  /* Convert the string into a piece of temporary memory.  */
+                  if (characters > 0) /* implies arg != 0 */
+                    {
+                      char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                      int count;
+#  if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+
+                      count = local_wcrtomb (cbuf, arg, &state);
+                      if (count <= 0)
+                        /* Inconsistency.  */
+                        abort ();
+                      memcpy (tmpsrc, cbuf, count);
+                    }
+
+                  /* Convert from TCHAR_T[] to DCHAR_T[].  */
+                  tmpdst =
+                    DCHAR_CONV_FROM_ENCODING (locale_charset (),
+                                              iconveh_question_mark,
+                                              tmpsrc, characters,
+                                              NULL,
+                                              NULL, &tmpdst_len);
+                  if (tmpdst == NULL)
+                    {
+                      if (!(result == resultbuf || result == NULL))
+                        free (result);
+                      if (buf_malloced != NULL)
+                        free (buf_malloced);
+                      CLEANUP ();
+                      return NULL;
+                    }
+# endif
+
+                  if (has_width)
+                    {
+# if ENABLE_UNISTDIO
+                      /* Outside POSIX, it's preferable to compare the width
+                         against the number of _characters_ of the converted
+                         value.  */
+                      w = DCHAR_MBSNLEN (result + length, characters);
+# else
+                      /* The width is compared against the number of _bytes_
+                         of the converted value, says POSIX.  */
+                      w = characters;
+# endif
+                    }
+                  else
+                    /* w doesn't matter.  */
+                    w = 0;
+
+                  if (w < width && !(dp->flags & FLAG_LEFT))
+                    {
+                      size_t n = width - w;
+                      ENSURE_ALLOCATION (xsum (length, n));
+                      DCHAR_SET (result + length, ' ', n);
+                      length += n;
+                    }
+
+# if DCHAR_IS_TCHAR
+                  if (has_width)
+                    {
+                      /* We know the number of bytes in advance.  */
+                      ENSURE_ALLOCATION (xsum (length, characters));
+                      if (characters > 0) /* implies arg != 0 */
+                        {
+                          int count;
+#  if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+                          mbstate_t state;
+                          memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+
+                          count = local_wcrtomb (result + length, arg, &state);
+                          if (count <= 0)
+                            /* Inconsistency.  */
+                            abort ();
+                          length += count;
+                        }
+                    }
+                  else
+                    {
+                      if (arg != 0)
+                        {
+                          char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                          int count;
+#  if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+                          mbstate_t state;
+                          memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+
+                          count = local_wcrtomb (cbuf, arg, &state);
+                          if (count <= 0)
+                            /* Inconsistency.  */
+                            abort ();
+                          ENSURE_ALLOCATION (xsum (length, count));
+                          memcpy (result + length, cbuf, count);
+                          length += count;
+                        }
+                    }
+# else
+                  ENSURE_ALLOCATION_ELSE (xsum (length, tmpdst_len),
+                                          { free (tmpdst); goto out_of_memory; });
+                  DCHAR_CPY (result + length, tmpdst, tmpdst_len);
+                  free (tmpdst);
+                  length += tmpdst_len;
+# endif
+
+                  if (w < width && (dp->flags & FLAG_LEFT))
+                    {
+                      size_t n = width - w;
+                      ENSURE_ALLOCATION (xsum (length, n));
+                      DCHAR_SET (result + length, ' ', n);
+                      length += n;
+                    }
+                }
+              }
+#endif
+#if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_DOUBLE) && !defined IN_LIBINTL
+            else if ((dp->conversion == 'a' || dp->conversion == 'A')
+# if !(NEED_PRINTF_DIRECTIVE_A || (NEED_PRINTF_LONG_DOUBLE && NEED_PRINTF_DOUBLE))
+                     && (0
+#  if NEED_PRINTF_DOUBLE
+                         || a.arg[dp->arg_index].type == TYPE_DOUBLE
+#  endif
+#  if NEED_PRINTF_LONG_DOUBLE
+                         || a.arg[dp->arg_index].type == TYPE_LONGDOUBLE
+#  endif
+                        )
+# endif
+                    )
+              {
+                arg_type type = a.arg[dp->arg_index].type;
+                int flags = dp->flags;
+                size_t width;
+                int has_precision;
+                size_t precision;
+                size_t tmp_length;
+                size_t count;
+                DCHAR_T tmpbuf[700];
+                DCHAR_T *tmp;
+                DCHAR_T *pad_ptr;
+                DCHAR_T *p;
+
+                width = 0;
+                if (dp->width_start != dp->width_end)
+                  {
+                    if (dp->width_arg_index != ARG_NONE)
+                      {
+                        int arg;
+
+                        if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->width_arg_index].a.a_int;
+                        width = arg;
+                        if (arg < 0)
+                          {
+                            /* "A negative field width is taken as a '-' flag
+                                followed by a positive field width."  */
+                            flags |= FLAG_LEFT;
+                            width = -width;
+                          }
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->width_start;
+
+                        do
+                          width = xsum (xtimes (width, 10), *digitp++ - '0');
+                        while (digitp != dp->width_end);
+                      }
+                  }
+
+                has_precision = 0;
+                precision = 0;
+                if (dp->precision_start != dp->precision_end)
+                  {
+                    if (dp->precision_arg_index != ARG_NONE)
+                      {
+                        int arg;
+
+                        if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->precision_arg_index].a.a_int;
+                        /* "A negative precision is taken as if the precision
+                            were omitted."  */
+                        if (arg >= 0)
+                          {
+                            precision = arg;
+                            has_precision = 1;
+                          }
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->precision_start + 1;
+
+                        precision = 0;
+                        while (digitp != dp->precision_end)
+                          precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+                        has_precision = 1;
+                      }
+                  }
+
+                /* Allocate a temporary buffer of sufficient size.  */
+                if (type == TYPE_LONGDOUBLE)
+                  tmp_length =
+                    (unsigned int) ((LDBL_DIG + 1)
+                                    * 0.831 /* decimal -> hexadecimal */
+                                   )
+                    + 1; /* turn floor into ceil */
+                else
+                  tmp_length =
+                    (unsigned int) ((DBL_DIG + 1)
+                                    * 0.831 /* decimal -> hexadecimal */
+                                   )
+                    + 1; /* turn floor into ceil */
+                if (tmp_length < precision)
+                  tmp_length = precision;
+                /* Account for sign, decimal point etc. */
+                tmp_length = xsum (tmp_length, 12);
+
+                if (tmp_length < width)
+                  tmp_length = width;
+
+                tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
+
+                if (tmp_length <= sizeof (tmpbuf) / sizeof (DCHAR_T))
+                  tmp = tmpbuf;
+                else
+                  {
+                    size_t tmp_memsize = xtimes (tmp_length, sizeof (DCHAR_T));
+
+                    if (size_overflow_p (tmp_memsize))
+                      /* Overflow, would lead to out of memory.  */
+                      goto out_of_memory;
+                    tmp = (DCHAR_T *) malloc (tmp_memsize);
+                    if (tmp == NULL)
+                      /* Out of memory.  */
+                      goto out_of_memory;
+                  }
+
+                pad_ptr = NULL;
+                p = tmp;
+                if (type == TYPE_LONGDOUBLE)
+                  {
+# if NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE
+                    long double arg = a.arg[dp->arg_index].a.a_longdouble;
+
+                    if (isnanl (arg))
+                      {
+                        if (dp->conversion == 'A')
+                          {
+                            *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
+                          }
+                        else
+                          {
+                            *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
+                          }
+                      }
+                    else
+                      {
+                        int sign = 0;
+                        DECL_LONG_DOUBLE_ROUNDING
+
+                        BEGIN_LONG_DOUBLE_ROUNDING ();
+
+                        if (signbit (arg)) /* arg < 0.0L or negative zero */
+                          {
+                            sign = -1;
+                            arg = -arg;
+                          }
+
+                        if (sign < 0)
+                          *p++ = '-';
+                        else if (flags & FLAG_SHOWSIGN)
+                          *p++ = '+';
+                        else if (flags & FLAG_SPACE)
+                          *p++ = ' ';
+
+                        if (arg > 0.0L && arg + arg == arg)
+                          {
+                            if (dp->conversion == 'A')
+                              {
+                                *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
+                              }
+                            else
+                              {
+                                *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
+                              }
+                          }
+                        else
+                          {
+                            int exponent;
+                            long double mantissa;
+
+                            if (arg > 0.0L)
+                              mantissa = printf_frexpl (arg, &exponent);
+                            else
+                              {
+                                exponent = 0;
+                                mantissa = 0.0L;
+                              }
+
+                            if (has_precision
+                                && precision < (unsigned int) ((LDBL_DIG + 1) * 0.831) + 1)
+                              {
+                                /* Round the mantissa.  */
+                                long double tail = mantissa;
+                                size_t q;
+
+                                for (q = precision; ; q--)
+                                  {
+                                    int digit = (int) tail;
+                                    tail -= digit;
+                                    if (q == 0)
+                                      {
+                                        if (digit & 1 ? tail >= 0.5L : tail > 0.5L)
+                                          tail = 1 - tail;
+                                        else
+                                          tail = - tail;
+                                        break;
+                                      }
+                                    tail *= 16.0L;
+                                  }
+                                if (tail != 0.0L)
+                                  for (q = precision; q > 0; q--)
+                                    tail *= 0.0625L;
+                                mantissa += tail;
+                              }
+
+                            *p++ = '0';
+                            *p++ = dp->conversion - 'A' + 'X';
+                            pad_ptr = p;
+                            {
+                              int digit;
+
+                              digit = (int) mantissa;
+                              mantissa -= digit;
+                              *p++ = '0' + digit;
+                              if ((flags & FLAG_ALT)
+                                  || mantissa > 0.0L || precision > 0)
+                                {
+                                  *p++ = decimal_point_char ();
+                                  /* This loop terminates because we assume
+                                     that FLT_RADIX is a power of 2.  */
+                                  while (mantissa > 0.0L)
+                                    {
+                                      mantissa *= 16.0L;
+                                      digit = (int) mantissa;
+                                      mantissa -= digit;
+                                      *p++ = digit
+                                             + (digit < 10
+                                                ? '0'
+                                                : dp->conversion - 10);
+                                      if (precision > 0)
+                                        precision--;
+                                    }
+                                  while (precision > 0)
+                                    {
+                                      *p++ = '0';
+                                      precision--;
+                                    }
+                                }
+                              }
+                              *p++ = dp->conversion - 'A' + 'P';
+#  if WIDE_CHAR_VERSION
+                              {
+                                static const wchar_t decimal_format[] =
+                                  { '%', '+', 'd', '\0' };
+                                SNPRINTF (p, 6 + 1, decimal_format, exponent);
+                              }
+                              while (*p != '\0')
+                                p++;
+#  else
+                              if (sizeof (DCHAR_T) == 1)
+                                {
+                                  sprintf ((char *) p, "%+d", exponent);
+                                  while (*p != '\0')
+                                    p++;
+                                }
+                              else
+                                {
+                                  char expbuf[6 + 1];
+                                  const char *ep;
+                                  sprintf (expbuf, "%+d", exponent);
+                                  for (ep = expbuf; (*p = *ep) != '\0'; ep++)
+                                    p++;
+                                }
+#  endif
+                          }
+
+                        END_LONG_DOUBLE_ROUNDING ();
+                      }
+# else
+                    abort ();
+# endif
+                  }
+                else
+                  {
+# if NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_DOUBLE
+                    double arg = a.arg[dp->arg_index].a.a_double;
+
+                    if (isnand (arg))
+                      {
+                        if (dp->conversion == 'A')
+                          {
+                            *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
+                          }
+                        else
+                          {
+                            *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
+                          }
+                      }
+                    else
+                      {
+                        int sign = 0;
+
+                        if (signbit (arg)) /* arg < 0.0 or negative zero */
+                          {
+                            sign = -1;
+                            arg = -arg;
+                          }
+
+                        if (sign < 0)
+                          *p++ = '-';
+                        else if (flags & FLAG_SHOWSIGN)
+                          *p++ = '+';
+                        else if (flags & FLAG_SPACE)
+                          *p++ = ' ';
+
+                        if (arg > 0.0 && arg + arg == arg)
+                          {
+                            if (dp->conversion == 'A')
+                              {
+                                *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
+                              }
+                            else
+                              {
+                                *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
+                              }
+                          }
+                        else
+                          {
+                            int exponent;
+                            double mantissa;
+
+                            if (arg > 0.0)
+                              mantissa = printf_frexp (arg, &exponent);
+                            else
+                              {
+                                exponent = 0;
+                                mantissa = 0.0;
+                              }
+
+                            if (has_precision
+                                && precision < (unsigned int) ((DBL_DIG + 1) * 0.831) + 1)
+                              {
+                                /* Round the mantissa.  */
+                                double tail = mantissa;
+                                size_t q;
+
+                                for (q = precision; ; q--)
+                                  {
+                                    int digit = (int) tail;
+                                    tail -= digit;
+                                    if (q == 0)
+                                      {
+                                        if (digit & 1 ? tail >= 0.5 : tail > 0.5)
+                                          tail = 1 - tail;
+                                        else
+                                          tail = - tail;
+                                        break;
+                                      }
+                                    tail *= 16.0;
+                                  }
+                                if (tail != 0.0)
+                                  for (q = precision; q > 0; q--)
+                                    tail *= 0.0625;
+                                mantissa += tail;
+                              }
+
+                            *p++ = '0';
+                            *p++ = dp->conversion - 'A' + 'X';
+                            pad_ptr = p;
+                            {
+                              int digit;
+
+                              digit = (int) mantissa;
+                              mantissa -= digit;
+                              *p++ = '0' + digit;
+                              if ((flags & FLAG_ALT)
+                                  || mantissa > 0.0 || precision > 0)
+                                {
+                                  *p++ = decimal_point_char ();
+                                  /* This loop terminates because we assume
+                                     that FLT_RADIX is a power of 2.  */
+                                  while (mantissa > 0.0)
+                                    {
+                                      mantissa *= 16.0;
+                                      digit = (int) mantissa;
+                                      mantissa -= digit;
+                                      *p++ = digit
+                                             + (digit < 10
+                                                ? '0'
+                                                : dp->conversion - 10);
+                                      if (precision > 0)
+                                        precision--;
+                                    }
+                                  while (precision > 0)
+                                    {
+                                      *p++ = '0';
+                                      precision--;
+                                    }
+                                }
+                              }
+                              *p++ = dp->conversion - 'A' + 'P';
+#  if WIDE_CHAR_VERSION
+                              {
+                                static const wchar_t decimal_format[] =
+                                  { '%', '+', 'd', '\0' };
+                                SNPRINTF (p, 6 + 1, decimal_format, exponent);
+                              }
+                              while (*p != '\0')
+                                p++;
+#  else
+                              if (sizeof (DCHAR_T) == 1)
+                                {
+                                  sprintf ((char *) p, "%+d", exponent);
+                                  while (*p != '\0')
+                                    p++;
+                                }
+                              else
+                                {
+                                  char expbuf[6 + 1];
+                                  const char *ep;
+                                  sprintf (expbuf, "%+d", exponent);
+                                  for (ep = expbuf; (*p = *ep) != '\0'; ep++)
+                                    p++;
+                                }
+#  endif
+                          }
+                      }
+# else
+                    abort ();
+# endif
+                  }
+
+                /* The generated string now extends from tmp to p, with the
+                   zero padding insertion point being at pad_ptr.  */
+                count = p - tmp;
+
+                if (count < width)
+                  {
+                    size_t pad = width - count;
+                    DCHAR_T *end = p + pad;
+
+                    if (flags & FLAG_LEFT)
+                      {
+                        /* Pad with spaces on the right.  */
+                        for (; pad > 0; pad--)
+                          *p++ = ' ';
+                      }
+                    else if ((flags & FLAG_ZERO) && pad_ptr != NULL)
+                      {
+                        /* Pad with zeroes.  */
+                        DCHAR_T *q = end;
+
+                        while (p > pad_ptr)
+                          *--q = *--p;
+                        for (; pad > 0; pad--)
+                          *p++ = '0';
+                      }
+                    else
+                      {
+                        /* Pad with spaces on the left.  */
+                        DCHAR_T *q = end;
+
+                        while (p > tmp)
+                          *--q = *--p;
+                        for (; pad > 0; pad--)
+                          *p++ = ' ';
+                      }
+
+                    p = end;
+                  }
+
+                count = p - tmp;
+
+                if (count >= tmp_length)
+                  /* tmp_length was incorrectly calculated - fix the
+                     code above!  */
+                  abort ();
+
+                /* Make room for the result.  */
+                if (count >= allocated - length)
+                  {
+                    size_t n = xsum (length, count);
+
+                    ENSURE_ALLOCATION (n);
+                  }
+
+                /* Append the result.  */
+                memcpy (result + length, tmp, count * sizeof (DCHAR_T));
+                if (tmp != tmpbuf)
+                  free (tmp);
+                length += count;
+              }
+#endif
+#if (NEED_PRINTF_INFINITE_DOUBLE || NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE || NEED_PRINTF_LONG_DOUBLE) && !defined IN_LIBINTL
+            else if ((dp->conversion == 'f' || dp->conversion == 'F'
+                      || dp->conversion == 'e' || dp->conversion == 'E'
+                      || dp->conversion == 'g' || dp->conversion == 'G'
+                      || dp->conversion == 'a' || dp->conversion == 'A')
+                     && (0
+# if NEED_PRINTF_DOUBLE
+                         || a.arg[dp->arg_index].type == TYPE_DOUBLE
+# elif NEED_PRINTF_INFINITE_DOUBLE
+                         || (a.arg[dp->arg_index].type == TYPE_DOUBLE
+                             /* The systems (mingw) which produce wrong output
+                                for Inf, -Inf, and NaN also do so for -0.0.
+                                Therefore we treat this case here as well.  */
+                             && is_infinite_or_zero (a.arg[dp->arg_index].a.a_double))
+# endif
+# if NEED_PRINTF_LONG_DOUBLE
+                         || a.arg[dp->arg_index].type == TYPE_LONGDOUBLE
+# elif NEED_PRINTF_INFINITE_LONG_DOUBLE
+                         || (a.arg[dp->arg_index].type == TYPE_LONGDOUBLE
+                             /* Some systems produce wrong output for Inf,
+                                -Inf, and NaN.  Some systems in this category
+                                (IRIX 5.3) also do so for -0.0.  Therefore we
+                                treat this case here as well.  */
+                             && is_infinite_or_zerol (a.arg[dp->arg_index].a.a_longdouble))
+# endif
+                        ))
+              {
+# if (NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE) && (NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE)
+                arg_type type = a.arg[dp->arg_index].type;
+# endif
+                int flags = dp->flags;
+                size_t width;
+                size_t count;
+                int has_precision;
+                size_t precision;
+                size_t tmp_length;
+                DCHAR_T tmpbuf[700];
+                DCHAR_T *tmp;
+                DCHAR_T *pad_ptr;
+                DCHAR_T *p;
+
+                width = 0;
+                if (dp->width_start != dp->width_end)
+                  {
+                    if (dp->width_arg_index != ARG_NONE)
+                      {
+                        int arg;
+
+                        if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->width_arg_index].a.a_int;
+                        width = arg;
+                        if (arg < 0)
+                          {
+                            /* "A negative field width is taken as a '-' flag
+                                followed by a positive field width."  */
+                            flags |= FLAG_LEFT;
+                            width = -width;
+                          }
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->width_start;
+
+                        do
+                          width = xsum (xtimes (width, 10), *digitp++ - '0');
+                        while (digitp != dp->width_end);
+                      }
+                  }
+
+                has_precision = 0;
+                precision = 0;
+                if (dp->precision_start != dp->precision_end)
+                  {
+                    if (dp->precision_arg_index != ARG_NONE)
+                      {
+                        int arg;
+
+                        if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->precision_arg_index].a.a_int;
+                        /* "A negative precision is taken as if the precision
+                            were omitted."  */
+                        if (arg >= 0)
+                          {
+                            precision = arg;
+                            has_precision = 1;
+                          }
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->precision_start + 1;
+
+                        precision = 0;
+                        while (digitp != dp->precision_end)
+                          precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+                        has_precision = 1;
+                      }
+                  }
+
+                /* POSIX specifies the default precision to be 6 for %f, %F,
+                   %e, %E, but not for %g, %G.  Implementations appear to use
+                   the same default precision also for %g, %G.  But for %a, %A,
+                   the default precision is 0.  */
+                if (!has_precision)
+                  if (!(dp->conversion == 'a' || dp->conversion == 'A'))
+                    precision = 6;
+
+                /* Allocate a temporary buffer of sufficient size.  */
+# if NEED_PRINTF_DOUBLE && NEED_PRINTF_LONG_DOUBLE
+                tmp_length = (type == TYPE_LONGDOUBLE ? LDBL_DIG + 1 : DBL_DIG + 1);
+# elif NEED_PRINTF_INFINITE_DOUBLE && NEED_PRINTF_LONG_DOUBLE
+                tmp_length = (type == TYPE_LONGDOUBLE ? LDBL_DIG + 1 : 0);
+# elif NEED_PRINTF_LONG_DOUBLE
+                tmp_length = LDBL_DIG + 1;
+# elif NEED_PRINTF_DOUBLE
+                tmp_length = DBL_DIG + 1;
+# else
+                tmp_length = 0;
+# endif
+                if (tmp_length < precision)
+                  tmp_length = precision;
+# if NEED_PRINTF_LONG_DOUBLE
+#  if NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE
+                if (type == TYPE_LONGDOUBLE)
+#  endif
+                  if (dp->conversion == 'f' || dp->conversion == 'F')
+                    {
+                      long double arg = a.arg[dp->arg_index].a.a_longdouble;
+                      if (!(isnanl (arg) || arg + arg == arg))
+                        {
+                          /* arg is finite and nonzero.  */
+                          int exponent = floorlog10l (arg < 0 ? -arg : arg);
+                          if (exponent >= 0 && tmp_length < exponent + precision)
+                            tmp_length = exponent + precision;
+                        }
+                    }
+# endif
+# if NEED_PRINTF_DOUBLE
+#  if NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE
+                if (type == TYPE_DOUBLE)
+#  endif
+                  if (dp->conversion == 'f' || dp->conversion == 'F')
+                    {
+                      double arg = a.arg[dp->arg_index].a.a_double;
+                      if (!(isnand (arg) || arg + arg == arg))
+                        {
+                          /* arg is finite and nonzero.  */
+                          int exponent = floorlog10 (arg < 0 ? -arg : arg);
+                          if (exponent >= 0 && tmp_length < exponent + precision)
+                            tmp_length = exponent + precision;
+                        }
+                    }
+# endif
+                /* Account for sign, decimal point etc. */
+                tmp_length = xsum (tmp_length, 12);
+
+                if (tmp_length < width)
+                  tmp_length = width;
+
+                tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
+
+                if (tmp_length <= sizeof (tmpbuf) / sizeof (DCHAR_T))
+                  tmp = tmpbuf;
+                else
+                  {
+                    size_t tmp_memsize = xtimes (tmp_length, sizeof (DCHAR_T));
+
+                    if (size_overflow_p (tmp_memsize))
+                      /* Overflow, would lead to out of memory.  */
+                      goto out_of_memory;
+                    tmp = (DCHAR_T *) malloc (tmp_memsize);
+                    if (tmp == NULL)
+                      /* Out of memory.  */
+                      goto out_of_memory;
+                  }
+
+                pad_ptr = NULL;
+                p = tmp;
+
+# if NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE
+#  if NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE
+                if (type == TYPE_LONGDOUBLE)
+#  endif
+                  {
+                    long double arg = a.arg[dp->arg_index].a.a_longdouble;
+
+                    if (isnanl (arg))
+                      {
+                        if (dp->conversion >= 'A' && dp->conversion <= 'Z')
+                          {
+                            *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
+                          }
+                        else
+                          {
+                            *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
+                          }
+                      }
+                    else
+                      {
+                        int sign = 0;
+                        DECL_LONG_DOUBLE_ROUNDING
+
+                        BEGIN_LONG_DOUBLE_ROUNDING ();
+
+                        if (signbit (arg)) /* arg < 0.0L or negative zero */
+                          {
+                            sign = -1;
+                            arg = -arg;
+                          }
+
+                        if (sign < 0)
+                          *p++ = '-';
+                        else if (flags & FLAG_SHOWSIGN)
+                          *p++ = '+';
+                        else if (flags & FLAG_SPACE)
+                          *p++ = ' ';
+
+                        if (arg > 0.0L && arg + arg == arg)
+                          {
+                            if (dp->conversion >= 'A' && dp->conversion <= 'Z')
+                              {
+                                *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
+                              }
+                            else
+                              {
+                                *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
+                              }
+                          }
+                        else
+                          {
+#  if NEED_PRINTF_LONG_DOUBLE
+                            pad_ptr = p;
+
+                            if (dp->conversion == 'f' || dp->conversion == 'F')
+                              {
+                                char *digits;
+                                size_t ndigits;
+
+                                digits =
+                                  scale10_round_decimal_long_double (arg, precision);
+                                if (digits == NULL)
+                                  {
+                                    END_LONG_DOUBLE_ROUNDING ();
+                                    goto out_of_memory;
+                                  }
+                                ndigits = strlen (digits);
+
+                                if (ndigits > precision)
+                                  do
+                                    {
+                                      --ndigits;
+                                      *p++ = digits[ndigits];
+                                    }
+                                  while (ndigits > precision);
+                                else
+                                  *p++ = '0';
+                                /* Here ndigits <= precision.  */
+                                if ((flags & FLAG_ALT) || precision > 0)
+                                  {
+                                    *p++ = decimal_point_char ();
+                                    for (; precision > ndigits; precision--)
+                                      *p++ = '0';
+                                    while (ndigits > 0)
+                                      {
+                                        --ndigits;
+                                        *p++ = digits[ndigits];
+                                      }
+                                  }
+
+                                free (digits);
+                              }
+                            else if (dp->conversion == 'e' || dp->conversion == 'E')
+                              {
+                                int exponent;
+
+                                if (arg == 0.0L)
+                                  {
+                                    exponent = 0;
+                                    *p++ = '0';
+                                    if ((flags & FLAG_ALT) || precision > 0)
+                                      {
+                                        *p++ = decimal_point_char ();
+                                        for (; precision > 0; precision--)
+                                          *p++ = '0';
+                                      }
+                                  }
+                                else
+                                  {
+                                    /* arg > 0.0L.  */
+                                    int adjusted;
+                                    char *digits;
+                                    size_t ndigits;
+
+                                    exponent = floorlog10l (arg);
+                                    adjusted = 0;
+                                    for (;;)
+                                      {
+                                        digits =
+                                          scale10_round_decimal_long_double (arg,
+                                                                             (int)precision - exponent);
+                                        if (digits == NULL)
+                                          {
+                                            END_LONG_DOUBLE_ROUNDING ();
+                                            goto out_of_memory;
+                                          }
+                                        ndigits = strlen (digits);
+
+                                        if (ndigits == precision + 1)
+                                          break;
+                                        if (ndigits < precision
+                                            || ndigits > precision + 2)
+                                          /* The exponent was not guessed
+                                             precisely enough.  */
+                                          abort ();
+                                        if (adjusted)
+                                          /* None of two values of exponent is
+                                             the right one.  Prevent an endless
+                                             loop.  */
+                                          abort ();
+                                        free (digits);
+                                        if (ndigits == precision)
+                                          exponent -= 1;
+                                        else
+                                          exponent += 1;
+                                        adjusted = 1;
+                                      }
+                                    /* Here ndigits = precision+1.  */
+                                    if (is_borderline (digits, precision))
+                                      {
+                                        /* Maybe the exponent guess was too high
+                                           and a smaller exponent can be reached
+                                           by turning a 10...0 into 9...9x.  */
+                                        char *digits2 =
+                                          scale10_round_decimal_long_double (arg,
+                                                                             (int)precision - exponent + 1);
+                                        if (digits2 == NULL)
+                                          {
+                                            free (digits);
+                                            END_LONG_DOUBLE_ROUNDING ();
+                                            goto out_of_memory;
+                                          }
+                                        if (strlen (digits2) == precision + 1)
+                                          {
+                                            free (digits);
+                                            digits = digits2;
+                                            exponent -= 1;
+                                          }
+                                        else
+                                          free (digits2);
+                                      }
+                                    /* Here ndigits = precision+1.  */
+
+                                    *p++ = digits[--ndigits];
+                                    if ((flags & FLAG_ALT) || precision > 0)
+                                      {
+                                        *p++ = decimal_point_char ();
+                                        while (ndigits > 0)
+                                          {
+                                            --ndigits;
+                                            *p++ = digits[ndigits];
+                                          }
+                                      }
+
+                                    free (digits);
+                                  }
+
+                                *p++ = dp->conversion; /* 'e' or 'E' */
+#   if WIDE_CHAR_VERSION
+                                {
+                                  static const wchar_t decimal_format[] =
+                                    { '%', '+', '.', '2', 'd', '\0' };
+                                  SNPRINTF (p, 6 + 1, decimal_format, exponent);
+                                }
+                                while (*p != '\0')
+                                  p++;
+#   else
+                                if (sizeof (DCHAR_T) == 1)
+                                  {
+                                    sprintf ((char *) p, "%+.2d", exponent);
+                                    while (*p != '\0')
+                                      p++;
+                                  }
+                                else
+                                  {
+                                    char expbuf[6 + 1];
+                                    const char *ep;
+                                    sprintf (expbuf, "%+.2d", exponent);
+                                    for (ep = expbuf; (*p = *ep) != '\0'; ep++)
+                                      p++;
+                                  }
+#   endif
+                              }
+                            else if (dp->conversion == 'g' || dp->conversion == 'G')
+                              {
+                                if (precision == 0)
+                                  precision = 1;
+                                /* precision >= 1.  */
+
+                                if (arg == 0.0L)
+                                  /* The exponent is 0, >= -4, < precision.
+                                     Use fixed-point notation.  */
+                                  {
+                                    size_t ndigits = precision;
+                                    /* Number of trailing zeroes that have to be
+                                       dropped.  */
+                                    size_t nzeroes =
+                                      (flags & FLAG_ALT ? 0 : precision - 1);
+
+                                    --ndigits;
+                                    *p++ = '0';
+                                    if ((flags & FLAG_ALT) || ndigits > nzeroes)
+                                      {
+                                        *p++ = decimal_point_char ();
+                                        while (ndigits > nzeroes)
+                                          {
+                                            --ndigits;
+                                            *p++ = '0';
+                                          }
+                                      }
+                                  }
+                                else
+                                  {
+                                    /* arg > 0.0L.  */
+                                    int exponent;
+                                    int adjusted;
+                                    char *digits;
+                                    size_t ndigits;
+                                    size_t nzeroes;
+
+                                    exponent = floorlog10l (arg);
+                                    adjusted = 0;
+                                    for (;;)
+                                      {
+                                        digits =
+                                          scale10_round_decimal_long_double (arg,
+                                                                             (int)(precision - 1) - exponent);
+                                        if (digits == NULL)
+                                          {
+                                            END_LONG_DOUBLE_ROUNDING ();
+                                            goto out_of_memory;
+                                          }
+                                        ndigits = strlen (digits);
+
+                                        if (ndigits == precision)
+                                          break;
+                                        if (ndigits < precision - 1
+                                            || ndigits > precision + 1)
+                                          /* The exponent was not guessed
+                                             precisely enough.  */
+                                          abort ();
+                                        if (adjusted)
+                                          /* None of two values of exponent is
+                                             the right one.  Prevent an endless
+                                             loop.  */
+                                          abort ();
+                                        free (digits);
+                                        if (ndigits < precision)
+                                          exponent -= 1;
+                                        else
+                                          exponent += 1;
+                                        adjusted = 1;
+                                      }
+                                    /* Here ndigits = precision.  */
+                                    if (is_borderline (digits, precision - 1))
+                                      {
+                                        /* Maybe the exponent guess was too high
+                                           and a smaller exponent can be reached
+                                           by turning a 10...0 into 9...9x.  */
+                                        char *digits2 =
+                                          scale10_round_decimal_long_double (arg,
+                                                                             (int)(precision - 1) - exponent + 1);
+                                        if (digits2 == NULL)
+                                          {
+                                            free (digits);
+                                            END_LONG_DOUBLE_ROUNDING ();
+                                            goto out_of_memory;
+                                          }
+                                        if (strlen (digits2) == precision)
+                                          {
+                                            free (digits);
+                                            digits = digits2;
+                                            exponent -= 1;
+                                          }
+                                        else
+                                          free (digits2);
+                                      }
+                                    /* Here ndigits = precision.  */
+
+                                    /* Determine the number of trailing zeroes
+                                       that have to be dropped.  */
+                                    nzeroes = 0;
+                                    if ((flags & FLAG_ALT) == 0)
+                                      while (nzeroes < ndigits
+                                             && digits[nzeroes] == '0')
+                                        nzeroes++;
+
+                                    /* The exponent is now determined.  */
+                                    if (exponent >= -4
+                                        && exponent < (long)precision)
+                                      {
+                                        /* Fixed-point notation:
+                                           max(exponent,0)+1 digits, then the
+                                           decimal point, then the remaining
+                                           digits without trailing zeroes.  */
+                                        if (exponent >= 0)
+                                          {
+                                            size_t ecount = exponent + 1;
+                                            /* Note: count <= precision = ndigits.  */
+                                            for (; ecount > 0; ecount--)
+                                              *p++ = digits[--ndigits];
+                                            if ((flags & FLAG_ALT) || ndigits > nzeroes)
+                                              {
+                                                *p++ = decimal_point_char ();
+                                                while (ndigits > nzeroes)
+                                                  {
+                                                    --ndigits;
+                                                    *p++ = digits[ndigits];
+                                                  }
+                                              }
+                                          }
+                                        else
+                                          {
+                                            size_t ecount = -exponent - 1;
+                                            *p++ = '0';
+                                            *p++ = decimal_point_char ();
+                                            for (; ecount > 0; ecount--)
+                                              *p++ = '0';
+                                            while (ndigits > nzeroes)
+                                              {
+                                                --ndigits;
+                                                *p++ = digits[ndigits];
+                                              }
+                                          }
+                                      }
+                                    else
+                                      {
+                                        /* Exponential notation.  */
+                                        *p++ = digits[--ndigits];
+                                        if ((flags & FLAG_ALT) || ndigits > nzeroes)
+                                          {
+                                            *p++ = decimal_point_char ();
+                                            while (ndigits > nzeroes)
+                                              {
+                                                --ndigits;
+                                                *p++ = digits[ndigits];
+                                              }
+                                          }
+                                        *p++ = dp->conversion - 'G' + 'E'; /* 'e' or 'E' */
+#   if WIDE_CHAR_VERSION
+                                        {
+                                          static const wchar_t decimal_format[] =
+                                            { '%', '+', '.', '2', 'd', '\0' };
+                                          SNPRINTF (p, 6 + 1, decimal_format, exponent);
+                                        }
+                                        while (*p != '\0')
+                                          p++;
+#   else
+                                        if (sizeof (DCHAR_T) == 1)
+                                          {
+                                            sprintf ((char *) p, "%+.2d", exponent);
+                                            while (*p != '\0')
+                                              p++;
+                                          }
+                                        else
+                                          {
+                                            char expbuf[6 + 1];
+                                            const char *ep;
+                                            sprintf (expbuf, "%+.2d", exponent);
+                                            for (ep = expbuf; (*p = *ep) != '\0'; ep++)
+                                              p++;
+                                          }
+#   endif
+                                      }
+
+                                    free (digits);
+                                  }
+                              }
+                            else
+                              abort ();
+#  else
+                            /* arg is finite.  */
+                            if (!(arg == 0.0L))
+                              abort ();
+
+                            pad_ptr = p;
+
+                            if (dp->conversion == 'f' || dp->conversion == 'F')
+                              {
+                                *p++ = '0';
+                                if ((flags & FLAG_ALT) || precision > 0)
+                                  {
+                                    *p++ = decimal_point_char ();
+                                    for (; precision > 0; precision--)
+                                      *p++ = '0';
+                                  }
+                              }
+                            else if (dp->conversion == 'e' || dp->conversion == 'E')
+                              {
+                                *p++ = '0';
+                                if ((flags & FLAG_ALT) || precision > 0)
+                                  {
+                                    *p++ = decimal_point_char ();
+                                    for (; precision > 0; precision--)
+                                      *p++ = '0';
+                                  }
+                                *p++ = dp->conversion; /* 'e' or 'E' */
+                                *p++ = '+';
+                                *p++ = '0';
+                                *p++ = '0';
+                              }
+                            else if (dp->conversion == 'g' || dp->conversion == 'G')
+                              {
+                                *p++ = '0';
+                                if (flags & FLAG_ALT)
+                                  {
+                                    size_t ndigits =
+                                      (precision > 0 ? precision - 1 : 0);
+                                    *p++ = decimal_point_char ();
+                                    for (; ndigits > 0; --ndigits)
+                                      *p++ = '0';
+                                  }
+                              }
+                            else if (dp->conversion == 'a' || dp->conversion == 'A')
+                              {
+                                *p++ = '0';
+                                *p++ = dp->conversion - 'A' + 'X';
+                                pad_ptr = p;
+                                *p++ = '0';
+                                if ((flags & FLAG_ALT) || precision > 0)
+                                  {
+                                    *p++ = decimal_point_char ();
+                                    for (; precision > 0; precision--)
+                                      *p++ = '0';
+                                  }
+                                *p++ = dp->conversion - 'A' + 'P';
+                                *p++ = '+';
+                                *p++ = '0';
+                              }
+                            else
+                              abort ();
+#  endif
+                          }
+
+                        END_LONG_DOUBLE_ROUNDING ();
+                      }
+                  }
+#  if NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE
+                else
+#  endif
+# endif
+# if NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE
+                  {
+                    double arg = a.arg[dp->arg_index].a.a_double;
+
+                    if (isnand (arg))
+                      {
+                        if (dp->conversion >= 'A' && dp->conversion <= 'Z')
+                          {
+                            *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
+                          }
+                        else
+                          {
+                            *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
+                          }
+                      }
+                    else
+                      {
+                        int sign = 0;
+
+                        if (signbit (arg)) /* arg < 0.0 or negative zero */
+                          {
+                            sign = -1;
+                            arg = -arg;
+                          }
+
+                        if (sign < 0)
+                          *p++ = '-';
+                        else if (flags & FLAG_SHOWSIGN)
+                          *p++ = '+';
+                        else if (flags & FLAG_SPACE)
+                          *p++ = ' ';
+
+                        if (arg > 0.0 && arg + arg == arg)
+                          {
+                            if (dp->conversion >= 'A' && dp->conversion <= 'Z')
+                              {
+                                *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
+                              }
+                            else
+                              {
+                                *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
+                              }
+                          }
+                        else
+                          {
+#  if NEED_PRINTF_DOUBLE
+                            pad_ptr = p;
+
+                            if (dp->conversion == 'f' || dp->conversion == 'F')
+                              {
+                                char *digits;
+                                size_t ndigits;
+
+                                digits =
+                                  scale10_round_decimal_double (arg, precision);
+                                if (digits == NULL)
+                                  goto out_of_memory;
+                                ndigits = strlen (digits);
+
+                                if (ndigits > precision)
+                                  do
+                                    {
+                                      --ndigits;
+                                      *p++ = digits[ndigits];
+                                    }
+                                  while (ndigits > precision);
+                                else
+                                  *p++ = '0';
+                                /* Here ndigits <= precision.  */
+                                if ((flags & FLAG_ALT) || precision > 0)
+                                  {
+                                    *p++ = decimal_point_char ();
+                                    for (; precision > ndigits; precision--)
+                                      *p++ = '0';
+                                    while (ndigits > 0)
+                                      {
+                                        --ndigits;
+                                        *p++ = digits[ndigits];
+                                      }
+                                  }
+
+                                free (digits);
+                              }
+                            else if (dp->conversion == 'e' || dp->conversion == 'E')
+                              {
+                                int exponent;
+
+                                if (arg == 0.0)
+                                  {
+                                    exponent = 0;
+                                    *p++ = '0';
+                                    if ((flags & FLAG_ALT) || precision > 0)
+                                      {
+                                        *p++ = decimal_point_char ();
+                                        for (; precision > 0; precision--)
+                                          *p++ = '0';
+                                      }
+                                  }
+                                else
+                                  {
+                                    /* arg > 0.0.  */
+                                    int adjusted;
+                                    char *digits;
+                                    size_t ndigits;
+
+                                    exponent = floorlog10 (arg);
+                                    adjusted = 0;
+                                    for (;;)
+                                      {
+                                        digits =
+                                          scale10_round_decimal_double (arg,
+                                                                        (int)precision - exponent);
+                                        if (digits == NULL)
+                                          goto out_of_memory;
+                                        ndigits = strlen (digits);
+
+                                        if (ndigits == precision + 1)
+                                          break;
+                                        if (ndigits < precision
+                                            || ndigits > precision + 2)
+                                          /* The exponent was not guessed
+                                             precisely enough.  */
+                                          abort ();
+                                        if (adjusted)
+                                          /* None of two values of exponent is
+                                             the right one.  Prevent an endless
+                                             loop.  */
+                                          abort ();
+                                        free (digits);
+                                        if (ndigits == precision)
+                                          exponent -= 1;
+                                        else
+                                          exponent += 1;
+                                        adjusted = 1;
+                                      }
+                                    /* Here ndigits = precision+1.  */
+                                    if (is_borderline (digits, precision))
+                                      {
+                                        /* Maybe the exponent guess was too high
+                                           and a smaller exponent can be reached
+                                           by turning a 10...0 into 9...9x.  */
+                                        char *digits2 =
+                                          scale10_round_decimal_double (arg,
+                                                                        (int)precision - exponent + 1);
+                                        if (digits2 == NULL)
+                                          {
+                                            free (digits);
+                                            goto out_of_memory;
+                                          }
+                                        if (strlen (digits2) == precision + 1)
+                                          {
+                                            free (digits);
+                                            digits = digits2;
+                                            exponent -= 1;
+                                          }
+                                        else
+                                          free (digits2);
+                                      }
+                                    /* Here ndigits = precision+1.  */
+
+                                    *p++ = digits[--ndigits];
+                                    if ((flags & FLAG_ALT) || precision > 0)
+                                      {
+                                        *p++ = decimal_point_char ();
+                                        while (ndigits > 0)
+                                          {
+                                            --ndigits;
+                                            *p++ = digits[ndigits];
+                                          }
+                                      }
+
+                                    free (digits);
+                                  }
+
+                                *p++ = dp->conversion; /* 'e' or 'E' */
+#   if WIDE_CHAR_VERSION
+                                {
+                                  static const wchar_t decimal_format[] =
+                                    /* Produce the same number of exponent digits
+                                       as the native printf implementation.  */
+#    if defined _WIN32 && ! defined __CYGWIN__
+                                    { '%', '+', '.', '3', 'd', '\0' };
+#    else
+                                    { '%', '+', '.', '2', 'd', '\0' };
+#    endif
+                                  SNPRINTF (p, 6 + 1, decimal_format, exponent);
+                                }
+                                while (*p != '\0')
+                                  p++;
+#   else
+                                {
+                                  static const char decimal_format[] =
+                                    /* Produce the same number of exponent digits
+                                       as the native printf implementation.  */
+#    if defined _WIN32 && ! defined __CYGWIN__
+                                    "%+.3d";
+#    else
+                                    "%+.2d";
+#    endif
+                                  if (sizeof (DCHAR_T) == 1)
+                                    {
+                                      sprintf ((char *) p, decimal_format, exponent);
+                                      while (*p != '\0')
+                                        p++;
+                                    }
+                                  else
+                                    {
+                                      char expbuf[6 + 1];
+                                      const char *ep;
+                                      sprintf (expbuf, decimal_format, exponent);
+                                      for (ep = expbuf; (*p = *ep) != '\0'; ep++)
+                                        p++;
+                                    }
+                                }
+#   endif
+                              }
+                            else if (dp->conversion == 'g' || dp->conversion == 'G')
+                              {
+                                if (precision == 0)
+                                  precision = 1;
+                                /* precision >= 1.  */
+
+                                if (arg == 0.0)
+                                  /* The exponent is 0, >= -4, < precision.
+                                     Use fixed-point notation.  */
+                                  {
+                                    size_t ndigits = precision;
+                                    /* Number of trailing zeroes that have to be
+                                       dropped.  */
+                                    size_t nzeroes =
+                                      (flags & FLAG_ALT ? 0 : precision - 1);
+
+                                    --ndigits;
+                                    *p++ = '0';
+                                    if ((flags & FLAG_ALT) || ndigits > nzeroes)
+                                      {
+                                        *p++ = decimal_point_char ();
+                                        while (ndigits > nzeroes)
+                                          {
+                                            --ndigits;
+                                            *p++ = '0';
+                                          }
+                                      }
+                                  }
+                                else
+                                  {
+                                    /* arg > 0.0.  */
+                                    int exponent;
+                                    int adjusted;
+                                    char *digits;
+                                    size_t ndigits;
+                                    size_t nzeroes;
+
+                                    exponent = floorlog10 (arg);
+                                    adjusted = 0;
+                                    for (;;)
+                                      {
+                                        digits =
+                                          scale10_round_decimal_double (arg,
+                                                                        (int)(precision - 1) - exponent);
+                                        if (digits == NULL)
+                                          goto out_of_memory;
+                                        ndigits = strlen (digits);
+
+                                        if (ndigits == precision)
+                                          break;
+                                        if (ndigits < precision - 1
+                                            || ndigits > precision + 1)
+                                          /* The exponent was not guessed
+                                             precisely enough.  */
+                                          abort ();
+                                        if (adjusted)
+                                          /* None of two values of exponent is
+                                             the right one.  Prevent an endless
+                                             loop.  */
+                                          abort ();
+                                        free (digits);
+                                        if (ndigits < precision)
+                                          exponent -= 1;
+                                        else
+                                          exponent += 1;
+                                        adjusted = 1;
+                                      }
+                                    /* Here ndigits = precision.  */
+                                    if (is_borderline (digits, precision - 1))
+                                      {
+                                        /* Maybe the exponent guess was too high
+                                           and a smaller exponent can be reached
+                                           by turning a 10...0 into 9...9x.  */
+                                        char *digits2 =
+                                          scale10_round_decimal_double (arg,
+                                                                        (int)(precision - 1) - exponent + 1);
+                                        if (digits2 == NULL)
+                                          {
+                                            free (digits);
+                                            goto out_of_memory;
+                                          }
+                                        if (strlen (digits2) == precision)
+                                          {
+                                            free (digits);
+                                            digits = digits2;
+                                            exponent -= 1;
+                                          }
+                                        else
+                                          free (digits2);
+                                      }
+                                    /* Here ndigits = precision.  */
+
+                                    /* Determine the number of trailing zeroes
+                                       that have to be dropped.  */
+                                    nzeroes = 0;
+                                    if ((flags & FLAG_ALT) == 0)
+                                      while (nzeroes < ndigits
+                                             && digits[nzeroes] == '0')
+                                        nzeroes++;
+
+                                    /* The exponent is now determined.  */
+                                    if (exponent >= -4
+                                        && exponent < (long)precision)
+                                      {
+                                        /* Fixed-point notation:
+                                           max(exponent,0)+1 digits, then the
+                                           decimal point, then the remaining
+                                           digits without trailing zeroes.  */
+                                        if (exponent >= 0)
+                                          {
+                                            size_t ecount = exponent + 1;
+                                            /* Note: ecount <= precision = ndigits.  */
+                                            for (; ecount > 0; ecount--)
+                                              *p++ = digits[--ndigits];
+                                            if ((flags & FLAG_ALT) || ndigits > nzeroes)
+                                              {
+                                                *p++ = decimal_point_char ();
+                                                while (ndigits > nzeroes)
+                                                  {
+                                                    --ndigits;
+                                                    *p++ = digits[ndigits];
+                                                  }
+                                              }
+                                          }
+                                        else
+                                          {
+                                            size_t ecount = -exponent - 1;
+                                            *p++ = '0';
+                                            *p++ = decimal_point_char ();
+                                            for (; ecount > 0; ecount--)
+                                              *p++ = '0';
+                                            while (ndigits > nzeroes)
+                                              {
+                                                --ndigits;
+                                                *p++ = digits[ndigits];
+                                              }
+                                          }
+                                      }
+                                    else
+                                      {
+                                        /* Exponential notation.  */
+                                        *p++ = digits[--ndigits];
+                                        if ((flags & FLAG_ALT) || ndigits > nzeroes)
+                                          {
+                                            *p++ = decimal_point_char ();
+                                            while (ndigits > nzeroes)
+                                              {
+                                                --ndigits;
+                                                *p++ = digits[ndigits];
+                                              }
+                                          }
+                                        *p++ = dp->conversion - 'G' + 'E'; /* 'e' or 'E' */
+#   if WIDE_CHAR_VERSION
+                                        {
+                                          static const wchar_t decimal_format[] =
+                                            /* Produce the same number of exponent digits
+                                               as the native printf implementation.  */
+#    if defined _WIN32 && ! defined __CYGWIN__
+                                            { '%', '+', '.', '3', 'd', '\0' };
+#    else
+                                            { '%', '+', '.', '2', 'd', '\0' };
+#    endif
+                                          SNPRINTF (p, 6 + 1, decimal_format, exponent);
+                                        }
+                                        while (*p != '\0')
+                                          p++;
+#   else
+                                        {
+                                          static const char decimal_format[] =
+                                            /* Produce the same number of exponent digits
+                                               as the native printf implementation.  */
+#    if defined _WIN32 && ! defined __CYGWIN__
+                                            "%+.3d";
+#    else
+                                            "%+.2d";
+#    endif
+                                          if (sizeof (DCHAR_T) == 1)
+                                            {
+                                              sprintf ((char *) p, decimal_format, exponent);
+                                              while (*p != '\0')
+                                                p++;
+                                            }
+                                          else
+                                            {
+                                              char expbuf[6 + 1];
+                                              const char *ep;
+                                              sprintf (expbuf, decimal_format, exponent);
+                                              for (ep = expbuf; (*p = *ep) != '\0'; ep++)
+                                                p++;
+                                            }
+                                        }
+#   endif
+                                      }
+
+                                    free (digits);
+                                  }
+                              }
+                            else
+                              abort ();
+#  else
+                            /* arg is finite.  */
+                            if (!(arg == 0.0))
+                              abort ();
+
+                            pad_ptr = p;
+
+                            if (dp->conversion == 'f' || dp->conversion == 'F')
+                              {
+                                *p++ = '0';
+                                if ((flags & FLAG_ALT) || precision > 0)
+                                  {
+                                    *p++ = decimal_point_char ();
+                                    for (; precision > 0; precision--)
+                                      *p++ = '0';
+                                  }
+                              }
+                            else if (dp->conversion == 'e' || dp->conversion == 'E')
+                              {
+                                *p++ = '0';
+                                if ((flags & FLAG_ALT) || precision > 0)
+                                  {
+                                    *p++ = decimal_point_char ();
+                                    for (; precision > 0; precision--)
+                                      *p++ = '0';
+                                  }
+                                *p++ = dp->conversion; /* 'e' or 'E' */
+                                *p++ = '+';
+                                /* Produce the same number of exponent digits as
+                                   the native printf implementation.  */
+#   if defined _WIN32 && ! defined __CYGWIN__
+                                *p++ = '0';
+#   endif
+                                *p++ = '0';
+                                *p++ = '0';
+                              }
+                            else if (dp->conversion == 'g' || dp->conversion == 'G')
+                              {
+                                *p++ = '0';
+                                if (flags & FLAG_ALT)
+                                  {
+                                    size_t ndigits =
+                                      (precision > 0 ? precision - 1 : 0);
+                                    *p++ = decimal_point_char ();
+                                    for (; ndigits > 0; --ndigits)
+                                      *p++ = '0';
+                                  }
+                              }
+                            else
+                              abort ();
+#  endif
+                          }
+                      }
+                  }
+# endif
+
+                /* The generated string now extends from tmp to p, with the
+                   zero padding insertion point being at pad_ptr.  */
+                count = p - tmp;
+
+                if (count < width)
+                  {
+                    size_t pad = width - count;
+                    DCHAR_T *end = p + pad;
+
+                    if (flags & FLAG_LEFT)
+                      {
+                        /* Pad with spaces on the right.  */
+                        for (; pad > 0; pad--)
+                          *p++ = ' ';
+                      }
+                    else if ((flags & FLAG_ZERO) && pad_ptr != NULL)
+                      {
+                        /* Pad with zeroes.  */
+                        DCHAR_T *q = end;
+
+                        while (p > pad_ptr)
+                          *--q = *--p;
+                        for (; pad > 0; pad--)
+                          *p++ = '0';
+                      }
+                    else
+                      {
+                        /* Pad with spaces on the left.  */
+                        DCHAR_T *q = end;
+
+                        while (p > tmp)
+                          *--q = *--p;
+                        for (; pad > 0; pad--)
+                          *p++ = ' ';
+                      }
+
+                    p = end;
+                  }
+
+                count = p - tmp;
+
+                if (count >= tmp_length)
+                  /* tmp_length was incorrectly calculated - fix the
+                     code above!  */
+                  abort ();
+
+                /* Make room for the result.  */
+                if (count >= allocated - length)
+                  {
+                    size_t n = xsum (length, count);
+
+                    ENSURE_ALLOCATION (n);
+                  }
+
+                /* Append the result.  */
+                memcpy (result + length, tmp, count * sizeof (DCHAR_T));
+                if (tmp != tmpbuf)
+                  free (tmp);
+                length += count;
+              }
+#endif
+            else
+              {
+                arg_type type = a.arg[dp->arg_index].type;
+                int flags = dp->flags;
+#if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+                int has_width;
+#endif
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+                size_t width;
+#endif
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || NEED_PRINTF_UNBOUNDED_PRECISION
+                int has_precision;
+                size_t precision;
+#endif
+#if NEED_PRINTF_UNBOUNDED_PRECISION
+                int prec_ourselves;
+#else
+#               define prec_ourselves 0
+#endif
+#if NEED_PRINTF_FLAG_LEFTADJUST
+#               define pad_ourselves 1
+#elif !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+                int pad_ourselves;
+#else
+#               define pad_ourselves 0
+#endif
+                TCHAR_T *fbp;
+                unsigned int prefix_count;
+                int prefixes[2] IF_LINT (= { 0 });
+                int orig_errno;
+#if !USE_SNPRINTF
+                size_t tmp_length;
+                TCHAR_T tmpbuf[700];
+                TCHAR_T *tmp;
+#endif
+
+#if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+                has_width = 0;
+#endif
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+                width = 0;
+                if (dp->width_start != dp->width_end)
+                  {
+                    if (dp->width_arg_index != ARG_NONE)
+                      {
+                        int arg;
+
+                        if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->width_arg_index].a.a_int;
+                        width = arg;
+                        if (arg < 0)
+                          {
+                            /* "A negative field width is taken as a '-' flag
+                                followed by a positive field width."  */
+                            flags |= FLAG_LEFT;
+                            width = -width;
+                          }
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->width_start;
+
+                        do
+                          width = xsum (xtimes (width, 10), *digitp++ - '0');
+                        while (digitp != dp->width_end);
+                      }
+#if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+                    has_width = 1;
+#endif
+                  }
+#endif
+
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || NEED_PRINTF_UNBOUNDED_PRECISION
+                has_precision = 0;
+                precision = 6;
+                if (dp->precision_start != dp->precision_end)
+                  {
+                    if (dp->precision_arg_index != ARG_NONE)
+                      {
+                        int arg;
+
+                        if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->precision_arg_index].a.a_int;
+                        /* "A negative precision is taken as if the precision
+                            were omitted."  */
+                        if (arg >= 0)
+                          {
+                            precision = arg;
+                            has_precision = 1;
+                          }
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->precision_start + 1;
+
+                        precision = 0;
+                        while (digitp != dp->precision_end)
+                          precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+                        has_precision = 1;
+                      }
+                  }
+#endif
+
+                /* Decide whether to handle the precision ourselves.  */
+#if NEED_PRINTF_UNBOUNDED_PRECISION
+                switch (dp->conversion)
+                  {
+                  case 'd': case 'i': case 'u':
+                  case 'o':
+                  case 'x': case 'X': case 'p':
+                    prec_ourselves = has_precision && (precision > 0);
+                    break;
+                  default:
+                    prec_ourselves = 0;
+                    break;
+                  }
+#endif
+
+                /* Decide whether to perform the padding ourselves.  */
+#if !NEED_PRINTF_FLAG_LEFTADJUST && (!DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION)
+                switch (dp->conversion)
+                  {
+# if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO
+                  /* If we need conversion from TCHAR_T[] to DCHAR_T[], we need
+                     to perform the padding after this conversion.  Functions
+                     with unistdio extensions perform the padding based on
+                     character count rather than element count.  */
+                  case 'c': case 's':
+# endif
+# if NEED_PRINTF_FLAG_ZERO
+                  case 'f': case 'F': case 'e': case 'E': case 'g': case 'G':
+                  case 'a': case 'A':
+# endif
+                    pad_ourselves = 1;
+                    break;
+                  default:
+                    pad_ourselves = prec_ourselves;
+                    break;
+                  }
+#endif
+
+#if !USE_SNPRINTF
+                /* Allocate a temporary buffer of sufficient size for calling
+                   sprintf.  */
+                tmp_length =
+                  MAX_ROOM_NEEDED (&a, dp->arg_index, dp->conversion, type,
+                                   flags, width, has_precision, precision,
+                                   pad_ourselves);
+
+                if (tmp_length <= sizeof (tmpbuf) / sizeof (TCHAR_T))
+                  tmp = tmpbuf;
+                else
+                  {
+                    size_t tmp_memsize = xtimes (tmp_length, sizeof (TCHAR_T));
+
+                    if (size_overflow_p (tmp_memsize))
+                      /* Overflow, would lead to out of memory.  */
+                      goto out_of_memory;
+                    tmp = (TCHAR_T *) malloc (tmp_memsize);
+                    if (tmp == NULL)
+                      /* Out of memory.  */
+                      goto out_of_memory;
+                  }
+#endif
+
+                /* Construct the format string for calling snprintf or
+                   sprintf.  */
+                fbp = buf;
+                *fbp++ = '%';
+#if NEED_PRINTF_FLAG_GROUPING
+                /* The underlying implementation doesn't support the ' flag.
+                   Produce no grouping characters in this case; this is
+                   acceptable because the grouping is locale dependent.  */
+#else
+                if (flags & FLAG_GROUP)
+                  *fbp++ = '\'';
+#endif
+                if (flags & FLAG_LEFT)
+                  *fbp++ = '-';
+                if (flags & FLAG_SHOWSIGN)
+                  *fbp++ = '+';
+                if (flags & FLAG_SPACE)
+                  *fbp++ = ' ';
+                if (flags & FLAG_ALT)
+                  *fbp++ = '#';
+#if __GLIBC__ >= 2 && !defined __UCLIBC__
+                if (flags & FLAG_LOCALIZED)
+                  *fbp++ = 'I';
+#endif
+                if (!pad_ourselves)
+                  {
+                    if (flags & FLAG_ZERO)
+                      *fbp++ = '0';
+                    if (dp->width_start != dp->width_end)
+                      {
+                        size_t n = dp->width_end - dp->width_start;
+                        /* The width specification is known to consist only
+                           of standard ASCII characters.  */
+                        if (sizeof (FCHAR_T) == sizeof (TCHAR_T))
+                          {
+                            memcpy (fbp, dp->width_start, n * sizeof (TCHAR_T));
+                            fbp += n;
+                          }
+                        else
+                          {
+                            const FCHAR_T *mp = dp->width_start;
+                            do
+                              *fbp++ = *mp++;
+                            while (--n > 0);
+                          }
+                      }
+                  }
+                if (!prec_ourselves)
+                  {
+                    if (dp->precision_start != dp->precision_end)
+                      {
+                        size_t n = dp->precision_end - dp->precision_start;
+                        /* The precision specification is known to consist only
+                           of standard ASCII characters.  */
+                        if (sizeof (FCHAR_T) == sizeof (TCHAR_T))
+                          {
+                            memcpy (fbp, dp->precision_start, n * sizeof (TCHAR_T));
+                            fbp += n;
+                          }
+                        else
+                          {
+                            const FCHAR_T *mp = dp->precision_start;
+                            do
+                              *fbp++ = *mp++;
+                            while (--n > 0);
+                          }
+                      }
+                  }
+
+                switch (type)
+                  {
+                  case TYPE_LONGLONGINT:
+                  case TYPE_ULONGLONGINT:
+#if defined _WIN32 && ! defined __CYGWIN__
+                    *fbp++ = 'I';
+                    *fbp++ = '6';
+                    *fbp++ = '4';
+                    break;
+#else
+                    *fbp++ = 'l';
+#endif
+                    FALLTHROUGH;
+                  case TYPE_LONGINT:
+                  case TYPE_ULONGINT:
+#if HAVE_WINT_T
+                  case TYPE_WIDE_CHAR:
+#endif
+#if HAVE_WCHAR_T
+                  case TYPE_WIDE_STRING:
+#endif
+                    *fbp++ = 'l';
+                    break;
+                  case TYPE_LONGDOUBLE:
+                    *fbp++ = 'L';
+                    break;
+                  default:
+                    break;
+                  }
+#if NEED_PRINTF_DIRECTIVE_F
+                if (dp->conversion == 'F')
+                  *fbp = 'f';
+                else
+#endif
+                  *fbp = dp->conversion;
+#if USE_SNPRINTF
+# if ((HAVE_SNPRINTF_RETVAL_C99 && HAVE_SNPRINTF_TRUNCATION_C99)            \
+      || ((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3))       \
+          && !defined __UCLIBC__)                                           \
+      || (defined __APPLE__ && defined __MACH__)                            \
+      || defined __ANDROID__                                                \
+      || (defined _WIN32 && ! defined __CYGWIN__))
+                /* On systems where we know that snprintf's return value
+                   conforms to ISO C 99 (HAVE_SNPRINTF_RETVAL_C99) and that
+                   snprintf always produces NUL-terminated strings
+                   (HAVE_SNPRINTF_TRUNCATION_C99), it is possible to avoid
+                   using %n.  And it is desirable to do so, because more and
+                   more platforms no longer support %n, for "security reasons".
+                   In particular, the following platforms:
+                     - On glibc2 systems from 2004-10-18 or newer, the use of
+                       %n in format strings in writable memory may crash the
+                       program (if compiled with _FORTIFY_SOURCE=2).
+                     - On Mac OS X 10.13 or newer, the use of %n in format
+                       strings in writable memory by default crashes the
+                       program.
+                     - On Android, starting on 2018-03-07, the use of %n in
+                       format strings produces a fatal error (see
+                       <https://android.googlesource.com/platform/bionic/+/41398d03b7e8e0dfb951660ae713e682e9fc0336>).
+                   On these platforms, HAVE_SNPRINTF_RETVAL_C99 and
+                   HAVE_SNPRINTF_TRUNCATION_C99 are 1. We have listed them
+                   explicitly in the condition above, in case of cross-
+                   compilation (just to be sure).  */
+                /* On native Windows systems (such as mingw), we can avoid using
+                   %n because:
+                     - Although the gl_SNPRINTF_TRUNCATION_C99 test fails,
+                       snprintf does not write more than the specified number
+                       of bytes. (snprintf (buf, 3, "%d %d", 4567, 89) writes
+                       '4', '5', '6' into buf, not '4', '5', '\0'.)
+                     - Although the gl_SNPRINTF_RETVAL_C99 test fails, snprintf
+                       allows us to recognize the case of an insufficient
+                       buffer size: it returns -1 in this case.
+                   On native Windows systems (such as mingw) where the OS is
+                   Windows Vista, the use of %n in format strings by default
+                   crashes the program. See
+                     <https://gcc.gnu.org/ml/gcc/2007-06/msg00122.html> and
+                     <https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/set-printf-count-output>
+                   So we should avoid %n in this situation.  */
+                fbp[1] = '\0';
+# else           /* AIX <= 5.1, HP-UX, IRIX, OSF/1, Solaris <= 9, BeOS */
+                fbp[1] = '%';
+                fbp[2] = 'n';
+                fbp[3] = '\0';
+# endif
+#else
+                fbp[1] = '\0';
+#endif
+
+                /* Construct the arguments for calling snprintf or sprintf.  */
+                prefix_count = 0;
+                if (!pad_ourselves && dp->width_arg_index != ARG_NONE)
+                  {
+                    if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+                      abort ();
+                    prefixes[prefix_count++] = a.arg[dp->width_arg_index].a.a_int;
+                  }
+                if (!prec_ourselves && dp->precision_arg_index != ARG_NONE)
+                  {
+                    if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+                      abort ();
+                    prefixes[prefix_count++] = a.arg[dp->precision_arg_index].a.a_int;
+                  }
+
+#if USE_SNPRINTF
+                /* The SNPRINTF result is appended after result[0..length].
+                   The latter is an array of DCHAR_T; SNPRINTF appends an
+                   array of TCHAR_T to it.  This is possible because
+                   sizeof (TCHAR_T) divides sizeof (DCHAR_T) and
+                   alignof (TCHAR_T) <= alignof (DCHAR_T).  */
+# define TCHARS_PER_DCHAR (sizeof (DCHAR_T) / sizeof (TCHAR_T))
+                /* Ensure that maxlen below will be >= 2.  Needed on BeOS,
+                   where an snprintf() with maxlen==1 acts like sprintf().  */
+                ENSURE_ALLOCATION (xsum (length,
+                                         (2 + TCHARS_PER_DCHAR - 1)
+                                         / TCHARS_PER_DCHAR));
+                /* Prepare checking whether snprintf returns the count
+                   via %n.  */
+                *(TCHAR_T *) (result + length) = '\0';
+#endif
+
+                orig_errno = errno;
+
+                for (;;)
+                  {
+                    int count = -1;
+
+#if USE_SNPRINTF
+                    int retcount = 0;
+                    size_t maxlen = allocated - length;
+                    /* SNPRINTF can fail if its second argument is
+                       > INT_MAX.  */
+                    if (maxlen > INT_MAX / TCHARS_PER_DCHAR)
+                      maxlen = INT_MAX / TCHARS_PER_DCHAR;
+                    maxlen = maxlen * TCHARS_PER_DCHAR;
+# define SNPRINTF_BUF(arg) \
+                    switch (prefix_count)                                   \
+                      {                                                     \
+                      case 0:                                               \
+                        retcount = SNPRINTF ((TCHAR_T *) (result + length), \
+                                             maxlen, buf,                   \
+                                             arg, &count);                  \
+                        break;                                              \
+                      case 1:                                               \
+                        retcount = SNPRINTF ((TCHAR_T *) (result + length), \
+                                             maxlen, buf,                   \
+                                             prefixes[0], arg, &count);     \
+                        break;                                              \
+                      case 2:                                               \
+                        retcount = SNPRINTF ((TCHAR_T *) (result + length), \
+                                             maxlen, buf,                   \
+                                             prefixes[0], prefixes[1], arg, \
+                                             &count);                       \
+                        break;                                              \
+                      default:                                              \
+                        abort ();                                           \
+                      }
+#else
+# define SNPRINTF_BUF(arg) \
+                    switch (prefix_count)                                   \
+                      {                                                     \
+                      case 0:                                               \
+                        count = sprintf (tmp, buf, arg);                    \
+                        break;                                              \
+                      case 1:                                               \
+                        count = sprintf (tmp, buf, prefixes[0], arg);       \
+                        break;                                              \
+                      case 2:                                               \
+                        count = sprintf (tmp, buf, prefixes[0], prefixes[1],\
+                                         arg);                              \
+                        break;                                              \
+                      default:                                              \
+                        abort ();                                           \
+                      }
+#endif
+
+                    errno = 0;
+                    switch (type)
+                      {
+                      case TYPE_SCHAR:
+                        {
+                          int arg = a.arg[dp->arg_index].a.a_schar;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      case TYPE_UCHAR:
+                        {
+                          unsigned int arg = a.arg[dp->arg_index].a.a_uchar;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      case TYPE_SHORT:
+                        {
+                          int arg = a.arg[dp->arg_index].a.a_short;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      case TYPE_USHORT:
+                        {
+                          unsigned int arg = a.arg[dp->arg_index].a.a_ushort;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      case TYPE_INT:
+                        {
+                          int arg = a.arg[dp->arg_index].a.a_int;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      case TYPE_UINT:
+                        {
+                          unsigned int arg = a.arg[dp->arg_index].a.a_uint;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      case TYPE_LONGINT:
+                        {
+                          long int arg = a.arg[dp->arg_index].a.a_longint;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      case TYPE_ULONGINT:
+                        {
+                          unsigned long int arg = a.arg[dp->arg_index].a.a_ulongint;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      case TYPE_LONGLONGINT:
+                        {
+                          long long int arg = a.arg[dp->arg_index].a.a_longlongint;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      case TYPE_ULONGLONGINT:
+                        {
+                          unsigned long long int arg = a.arg[dp->arg_index].a.a_ulonglongint;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      case TYPE_DOUBLE:
+                        {
+                          double arg = a.arg[dp->arg_index].a.a_double;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      case TYPE_LONGDOUBLE:
+                        {
+                          long double arg = a.arg[dp->arg_index].a.a_longdouble;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      case TYPE_CHAR:
+                        {
+                          int arg = a.arg[dp->arg_index].a.a_char;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+#if HAVE_WINT_T
+                      case TYPE_WIDE_CHAR:
+                        {
+                          wint_t arg = a.arg[dp->arg_index].a.a_wide_char;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+#endif
+                      case TYPE_STRING:
+                        {
+                          const char *arg = a.arg[dp->arg_index].a.a_string;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+#if HAVE_WCHAR_T
+                      case TYPE_WIDE_STRING:
+                        {
+                          const wchar_t *arg = a.arg[dp->arg_index].a.a_wide_string;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+#endif
+                      case TYPE_POINTER:
+                        {
+                          void *arg = a.arg[dp->arg_index].a.a_pointer;
+                          SNPRINTF_BUF (arg);
+                        }
+                        break;
+                      default:
+                        abort ();
+                      }
+
+#if USE_SNPRINTF
+                    /* Portability: Not all implementations of snprintf()
+                       are ISO C 99 compliant.  Determine the number of
+                       bytes that snprintf() has produced or would have
+                       produced.  */
+                    if (count >= 0)
+                      {
+                        /* Verify that snprintf() has NUL-terminated its
+                           result.  */
+                        if ((unsigned int) count < maxlen
+                            && ((TCHAR_T *) (result + length)) [count] != '\0')
+                          abort ();
+                        /* Portability hack.  */
+                        if (retcount > count)
+                          count = retcount;
+                      }
+                    else
+                      {
+                        /* snprintf() doesn't understand the '%n'
+                           directive.  */
+                        if (fbp[1] != '\0')
+                          {
+                            /* Don't use the '%n' directive; instead, look
+                               at the snprintf() return value.  */
+                            fbp[1] = '\0';
+                            continue;
+                          }
+                        else
+                          {
+                            /* Look at the snprintf() return value.  */
+                            if (retcount < 0)
+                              {
+# if !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF
+                                /* HP-UX 10.20 snprintf() is doubly deficient:
+                                   It doesn't understand the '%n' directive,
+                                   *and* it returns -1 (rather than the length
+                                   that would have been required) when the
+                                   buffer is too small.
+                                   But a failure at this point can also come
+                                   from other reasons than a too small buffer,
+                                   such as an invalid wide string argument to
+                                   the %ls directive, or possibly an invalid
+                                   floating-point argument.  */
+                                size_t tmp_length =
+                                  MAX_ROOM_NEEDED (&a, dp->arg_index,
+                                                   dp->conversion, type, flags,
+                                                   width,
+                                                   has_precision,
+                                                   precision, pad_ourselves);
+
+                                if (maxlen < tmp_length)
+                                  {
+                                    /* Make more room.  But try to do through
+                                       this reallocation only once.  */
+                                    size_t bigger_need =
+                                      xsum (length,
+                                            xsum (tmp_length,
+                                                  TCHARS_PER_DCHAR - 1)
+                                            / TCHARS_PER_DCHAR);
+                                    /* And always grow proportionally.
+                                       (There may be several arguments, each
+                                       needing a little more room than the
+                                       previous one.)  */
+                                    size_t bigger_need2 =
+                                      xsum (xtimes (allocated, 2), 12);
+                                    if (bigger_need < bigger_need2)
+                                      bigger_need = bigger_need2;
+                                    ENSURE_ALLOCATION (bigger_need);
+                                    continue;
+                                  }
+# endif
+                              }
+                            else
+                              count = retcount;
+                          }
+                      }
+#endif
+
+                    /* Attempt to handle failure.  */
+                    if (count < 0)
+                      {
+                        /* SNPRINTF or sprintf failed.  Use the errno that it
+                           has set, if any.  */
+                        if (errno == 0)
+                          {
+                            if (dp->conversion == 'c' || dp->conversion == 's')
+                              errno = EILSEQ;
+                            else
+                              errno = EINVAL;
+                          }
+
+                        if (!(result == resultbuf || result == NULL))
+                          free (result);
+                        if (buf_malloced != NULL)
+                          free (buf_malloced);
+                        CLEANUP ();
+
+                        return NULL;
+                      }
+
+#if USE_SNPRINTF
+                    /* Handle overflow of the allocated buffer.
+                       If such an overflow occurs, a C99 compliant snprintf()
+                       returns a count >= maxlen.  However, a non-compliant
+                       snprintf() function returns only count = maxlen - 1.  To
+                       cover both cases, test whether count >= maxlen - 1.  */
+                    if ((unsigned int) count + 1 >= maxlen)
+                      {
+                        /* If maxlen already has attained its allowed maximum,
+                           allocating more memory will not increase maxlen.
+                           Instead of looping, bail out.  */
+                        if (maxlen == INT_MAX / TCHARS_PER_DCHAR)
+                          goto overflow;
+                        else
+                          {
+                            /* Need at least (count + 1) * sizeof (TCHAR_T)
+                               bytes.  (The +1 is for the trailing NUL.)
+                               But ask for (count + 2) * sizeof (TCHAR_T)
+                               bytes, so that in the next round, we likely get
+                                 maxlen > (unsigned int) count + 1
+                               and so we don't get here again.
+                               And allocate proportionally, to avoid looping
+                               eternally if snprintf() reports a too small
+                               count.  */
+                            size_t n =
+                              xmax (xsum (length,
+                                          ((unsigned int) count + 2
+                                           + TCHARS_PER_DCHAR - 1)
+                                          / TCHARS_PER_DCHAR),
+                                    xtimes (allocated, 2));
+
+                            ENSURE_ALLOCATION (n);
+                            continue;
+                          }
+                      }
+#endif
+
+#if NEED_PRINTF_UNBOUNDED_PRECISION
+                    if (prec_ourselves)
+                      {
+                        /* Handle the precision.  */
+                        TCHAR_T *prec_ptr =
+# if USE_SNPRINTF
+                          (TCHAR_T *) (result + length);
+# else
+                          tmp;
+# endif
+                        size_t prefix_count;
+                        size_t move;
+
+                        prefix_count = 0;
+                        /* Put the additional zeroes after the sign.  */
+                        if (count >= 1
+                            && (*prec_ptr == '-' || *prec_ptr == '+'
+                                || *prec_ptr == ' '))
+                          prefix_count = 1;
+                        /* Put the additional zeroes after the 0x prefix if
+                           (flags & FLAG_ALT) || (dp->conversion == 'p').  */
+                        else if (count >= 2
+                                 && prec_ptr[0] == '0'
+                                 && (prec_ptr[1] == 'x' || prec_ptr[1] == 'X'))
+                          prefix_count = 2;
+
+                        move = count - prefix_count;
+                        if (precision > move)
+                          {
+                            /* Insert zeroes.  */
+                            size_t insert = precision - move;
+                            TCHAR_T *prec_end;
+
+# if USE_SNPRINTF
+                            size_t n =
+                              xsum (length,
+                                    (count + insert + TCHARS_PER_DCHAR - 1)
+                                    / TCHARS_PER_DCHAR);
+                            length += (count + TCHARS_PER_DCHAR - 1) / TCHARS_PER_DCHAR;
+                            ENSURE_ALLOCATION (n);
+                            length -= (count + TCHARS_PER_DCHAR - 1) / TCHARS_PER_DCHAR;
+                            prec_ptr = (TCHAR_T *) (result + length);
+# endif
+
+                            prec_end = prec_ptr + count;
+                            prec_ptr += prefix_count;
+
+                            while (prec_end > prec_ptr)
+                              {
+                                prec_end--;
+                                prec_end[insert] = prec_end[0];
+                              }
+
+                            prec_end += insert;
+                            do
+                              *--prec_end = '0';
+                            while (prec_end > prec_ptr);
+
+                            count += insert;
+                          }
+                      }
+#endif
+
+#if !USE_SNPRINTF
+                    if (count >= tmp_length)
+                      /* tmp_length was incorrectly calculated - fix the
+                         code above!  */
+                      abort ();
+#endif
+
+#if !DCHAR_IS_TCHAR
+                    /* Convert from TCHAR_T[] to DCHAR_T[].  */
+                    if (dp->conversion == 'c' || dp->conversion == 's')
+                      {
+                        /* type = TYPE_CHAR or TYPE_WIDE_CHAR or TYPE_STRING
+                           TYPE_WIDE_STRING.
+                           The result string is not certainly ASCII.  */
+                        const TCHAR_T *tmpsrc;
+                        DCHAR_T *tmpdst;
+                        size_t tmpdst_len;
+                        /* This code assumes that TCHAR_T is 'char'.  */
+                        verify (sizeof (TCHAR_T) == 1);
+# if USE_SNPRINTF
+                        tmpsrc = (TCHAR_T *) (result + length);
+# else
+                        tmpsrc = tmp;
+# endif
+                        tmpdst =
+                          DCHAR_CONV_FROM_ENCODING (locale_charset (),
+                                                    iconveh_question_mark,
+                                                    tmpsrc, count,
+                                                    NULL,
+                                                    NULL, &tmpdst_len);
+                        if (tmpdst == NULL)
+                          {
+                            if (!(result == resultbuf || result == NULL))
+                              free (result);
+                            if (buf_malloced != NULL)
+                              free (buf_malloced);
+                            CLEANUP ();
+                            return NULL;
+                          }
+                        ENSURE_ALLOCATION_ELSE (xsum (length, tmpdst_len),
+                                                { free (tmpdst); goto out_of_memory; });
+                        DCHAR_CPY (result + length, tmpdst, tmpdst_len);
+                        free (tmpdst);
+                        count = tmpdst_len;
+                      }
+                    else
+                      {
+                        /* The result string is ASCII.
+                           Simple 1:1 conversion.  */
+# if USE_SNPRINTF
+                        /* If sizeof (DCHAR_T) == sizeof (TCHAR_T), it's a
+                           no-op conversion, in-place on the array starting
+                           at (result + length).  */
+                        if (sizeof (DCHAR_T) != sizeof (TCHAR_T))
+# endif
+                          {
+                            const TCHAR_T *tmpsrc;
+                            DCHAR_T *tmpdst;
+                            size_t n;
+
+# if USE_SNPRINTF
+                            if (result == resultbuf)
+                              {
+                                tmpsrc = (TCHAR_T *) (result + length);
+                                /* ENSURE_ALLOCATION will not move tmpsrc
+                                   (because it's part of resultbuf).  */
+                                ENSURE_ALLOCATION (xsum (length, count));
+                              }
+                            else
+                              {
+                                /* ENSURE_ALLOCATION will move the array
+                                   (because it uses realloc().  */
+                                ENSURE_ALLOCATION (xsum (length, count));
+                                tmpsrc = (TCHAR_T *) (result + length);
+                              }
+# else
+                            tmpsrc = tmp;
+                            ENSURE_ALLOCATION (xsum (length, count));
+# endif
+                            tmpdst = result + length;
+                            /* Copy backwards, because of overlapping.  */
+                            tmpsrc += count;
+                            tmpdst += count;
+                            for (n = count; n > 0; n--)
+                              *--tmpdst = *--tmpsrc;
+                          }
+                      }
+#endif
+
+#if DCHAR_IS_TCHAR && !USE_SNPRINTF
+                    /* Make room for the result.  */
+                    if (count > allocated - length)
+                      {
+                        /* Need at least count elements.  But allocate
+                           proportionally.  */
+                        size_t n =
+                          xmax (xsum (length, count), xtimes (allocated, 2));
+
+                        ENSURE_ALLOCATION (n);
+                      }
+#endif
+
+                    /* Here count <= allocated - length.  */
+
+                    /* Perform padding.  */
+#if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+                    if (pad_ourselves && has_width)
+                      {
+                        size_t w;
+# if ENABLE_UNISTDIO
+                        /* Outside POSIX, it's preferable to compare the width
+                           against the number of _characters_ of the converted
+                           value.  */
+                        w = DCHAR_MBSNLEN (result + length, count);
+# else
+                        /* The width is compared against the number of _bytes_
+                           of the converted value, says POSIX.  */
+                        w = count;
+# endif
+                        if (w < width)
+                          {
+                            size_t pad = width - w;
+
+                            /* Make room for the result.  */
+                            if (xsum (count, pad) > allocated - length)
+                              {
+                                /* Need at least count + pad elements.  But
+                                   allocate proportionally.  */
+                                size_t n =
+                                  xmax (xsum3 (length, count, pad),
+                                        xtimes (allocated, 2));
+
+# if USE_SNPRINTF
+                                length += count;
+                                ENSURE_ALLOCATION (n);
+                                length -= count;
+# else
+                                ENSURE_ALLOCATION (n);
+# endif
+                              }
+                            /* Here count + pad <= allocated - length.  */
+
+                            {
+# if !DCHAR_IS_TCHAR || USE_SNPRINTF
+                              DCHAR_T * const rp = result + length;
+# else
+                              DCHAR_T * const rp = tmp;
+# endif
+                              DCHAR_T *p = rp + count;
+                              DCHAR_T *end = p + pad;
+                              DCHAR_T *pad_ptr;
+# if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO
+                              if (dp->conversion == 'c'
+                                  || dp->conversion == 's')
+                                /* No zero-padding for string directives.  */
+                                pad_ptr = NULL;
+                              else
+# endif
+                                {
+                                  pad_ptr = (*rp == '-' ? rp + 1 : rp);
+                                  /* No zero-padding of "inf" and "nan".  */
+                                  if ((*pad_ptr >= 'A' && *pad_ptr <= 'Z')
+                                      || (*pad_ptr >= 'a' && *pad_ptr <= 'z'))
+                                    pad_ptr = NULL;
+                                }
+                              /* The generated string now extends from rp to p,
+                                 with the zero padding insertion point being at
+                                 pad_ptr.  */
+
+                              count = count + pad; /* = end - rp */
+
+                              if (flags & FLAG_LEFT)
+                                {
+                                  /* Pad with spaces on the right.  */
+                                  for (; pad > 0; pad--)
+                                    *p++ = ' ';
+                                }
+                              else if ((flags & FLAG_ZERO) && pad_ptr != NULL)
+                                {
+                                  /* Pad with zeroes.  */
+                                  DCHAR_T *q = end;
+
+                                  while (p > pad_ptr)
+                                    *--q = *--p;
+                                  for (; pad > 0; pad--)
+                                    *p++ = '0';
+                                }
+                              else
+                                {
+                                  /* Pad with spaces on the left.  */
+                                  DCHAR_T *q = end;
+
+                                  while (p > rp)
+                                    *--q = *--p;
+                                  for (; pad > 0; pad--)
+                                    *p++ = ' ';
+                                }
+                            }
+                          }
+                      }
+#endif
+
+                    /* Here still count <= allocated - length.  */
+
+#if !DCHAR_IS_TCHAR || USE_SNPRINTF
+                    /* The snprintf() result did fit.  */
+#else
+                    /* Append the sprintf() result.  */
+                    memcpy (result + length, tmp, count * sizeof (DCHAR_T));
+#endif
+#if !USE_SNPRINTF
+                    if (tmp != tmpbuf)
+                      free (tmp);
+#endif
+
+#if NEED_PRINTF_DIRECTIVE_F
+                    if (dp->conversion == 'F')
+                      {
+                        /* Convert the %f result to upper case for %F.  */
+                        DCHAR_T *rp = result + length;
+                        size_t rc;
+                        for (rc = count; rc > 0; rc--, rp++)
+                          if (*rp >= 'a' && *rp <= 'z')
+                            *rp = *rp - 'a' + 'A';
+                      }
+#endif
+
+                    length += count;
+                    break;
+                  }
+                errno = orig_errno;
+#undef pad_ourselves
+#undef prec_ourselves
+              }
+          }
+      }
+
+    /* Add the final NUL.  */
+    ENSURE_ALLOCATION (xsum (length, 1));
+    result[length] = '\0';
+
+    if (result != resultbuf && length + 1 < allocated)
+      {
+        /* Shrink the allocated memory if possible.  */
+        DCHAR_T *memory;
+
+        memory = (DCHAR_T *) realloc (result, (length + 1) * sizeof (DCHAR_T));
+        if (memory != NULL)
+          result = memory;
+      }
+
+    if (buf_malloced != NULL)
+      free (buf_malloced);
+    CLEANUP ();
+    *lengthp = length;
+    /* Note that we can produce a big string of a length > INT_MAX.  POSIX
+       says that snprintf() fails with errno = EOVERFLOW in this case, but
+       that's only because snprintf() returns an 'int'.  This function does
+       not have this limitation.  */
+    return result;
+
+#if USE_SNPRINTF
+  overflow:
+    if (!(result == resultbuf || result == NULL))
+      free (result);
+    if (buf_malloced != NULL)
+      free (buf_malloced);
+    CLEANUP ();
+    errno = EOVERFLOW;
+    return NULL;
+#endif
+
+  out_of_memory:
+    if (!(result == resultbuf || result == NULL))
+      free (result);
+    if (buf_malloced != NULL)
+      free (buf_malloced);
+  out_of_memory_1:
+    CLEANUP ();
+    errno = ENOMEM;
+    return NULL;
+  }
+}
+
+#undef MAX_ROOM_NEEDED
+#undef TCHARS_PER_DCHAR
+#undef SNPRINTF
+#undef USE_SNPRINTF
+#undef DCHAR_SET
+#undef DCHAR_CPY
+#undef PRINTF_PARSE
+#undef DIRECTIVES
+#undef DIRECTIVE
+#undef DCHAR_IS_TCHAR
+#undef TCHAR_T
+#undef DCHAR_T
+#undef FCHAR_T
+#undef VASNPRINTF
diff --git a/src/grep/gnulib-tests/vasnprintf.h b/src/grep/gnulib-tests/vasnprintf.h
new file mode 100644
index 0000000..9b02cdf
--- /dev/null
+++ b/src/grep/gnulib-tests/vasnprintf.h
@@ -0,0 +1,72 @@
+/* vsprintf with automatic memory allocation.
+   Copyright (C) 2002-2004, 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _VASNPRINTF_H
+#define _VASNPRINTF_H
+
+/* Get va_list.  */
+#include <stdarg.h>
+
+/* Get size_t.  */
+#include <stddef.h>
+
+/* Get _GL_ATTRIBUTE_SPEC_PRINTF_STANDARD.  */
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Write formatted output to a string dynamically allocated with malloc().
+   You can pass a preallocated buffer for the result in RESULTBUF and its
+   size in *LENGTHP; otherwise you pass RESULTBUF = NULL.
+   If successful, return the address of the string (this may be = RESULTBUF
+   if no dynamic memory allocation was necessary) and set *LENGTHP to the
+   number of resulting bytes, excluding the trailing NUL.  Upon error, set
+   errno and return NULL.
+
+   When dynamic memory allocation occurs, the preallocated buffer is left
+   alone (with possibly modified contents).  This makes it possible to use
+   a statically allocated or stack-allocated buffer, like this:
+
+          char buf[100];
+          size_t len = sizeof (buf);
+          char *output = vasnprintf (buf, &len, format, args);
+          if (output == NULL)
+            ... error handling ...;
+          else
+            {
+              ... use the output string ...;
+              if (output != buf)
+                free (output);
+            }
+  */
+#if REPLACE_VASNPRINTF
+# define asnprintf rpl_asnprintf
+# define vasnprintf rpl_vasnprintf
+#endif
+extern char * asnprintf (char *restrict resultbuf, size_t *lengthp,
+                         const char *format, ...)
+       _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 4));
+extern char * vasnprintf (char *restrict resultbuf, size_t *lengthp,
+                          const char *format, va_list args)
+       _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 0));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _VASNPRINTF_H */
diff --git a/src/grep/gnulib-tests/w32sock.h b/src/grep/gnulib-tests/w32sock.h
new file mode 100644
index 0000000..635a1b2
--- /dev/null
+++ b/src/grep/gnulib-tests/w32sock.h
@@ -0,0 +1,140 @@
+/* w32sock.h --- internal auxiliary functions for Windows socket functions
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <errno.h>
+
+/* Get O_RDWR and O_BINARY.  */
+#include <fcntl.h>
+
+/* Get _open_osfhandle().  */
+#include <io.h>
+
+/* Get _get_osfhandle().  */
+#if GNULIB_MSVC_NOTHROW
+# include "msvc-nothrow.h"
+#else
+# include <io.h>
+#endif
+
+#define FD_TO_SOCKET(fd)   ((SOCKET) _get_osfhandle ((fd)))
+#define SOCKET_TO_FD(fh)   (_open_osfhandle ((intptr_t) (fh), O_RDWR | O_BINARY))
+
+static inline void
+set_winsock_errno (void)
+{
+  int err = WSAGetLastError ();
+
+  /* Map some WSAE* errors to the runtime library's error codes.  */
+  switch (err)
+    {
+    case WSA_INVALID_HANDLE:
+      errno = EBADF;
+      break;
+    case WSA_NOT_ENOUGH_MEMORY:
+      errno = ENOMEM;
+      break;
+    case WSA_INVALID_PARAMETER:
+      errno = EINVAL;
+      break;
+    case WSAENAMETOOLONG:
+      errno = ENAMETOOLONG;
+      break;
+    case WSAENOTEMPTY:
+      errno = ENOTEMPTY;
+      break;
+    case WSAEWOULDBLOCK:
+      errno = EWOULDBLOCK;
+      break;
+    case WSAEINPROGRESS:
+      errno = EINPROGRESS;
+      break;
+    case WSAEALREADY:
+      errno = EALREADY;
+      break;
+    case WSAENOTSOCK:
+      errno = ENOTSOCK;
+      break;
+    case WSAEDESTADDRREQ:
+      errno = EDESTADDRREQ;
+      break;
+    case WSAEMSGSIZE:
+      errno = EMSGSIZE;
+      break;
+    case WSAEPROTOTYPE:
+      errno = EPROTOTYPE;
+      break;
+    case WSAENOPROTOOPT:
+      errno = ENOPROTOOPT;
+      break;
+    case WSAEPROTONOSUPPORT:
+      errno = EPROTONOSUPPORT;
+      break;
+    case WSAEOPNOTSUPP:
+      errno = EOPNOTSUPP;
+      break;
+    case WSAEAFNOSUPPORT:
+      errno = EAFNOSUPPORT;
+      break;
+    case WSAEADDRINUSE:
+      errno = EADDRINUSE;
+      break;
+    case WSAEADDRNOTAVAIL:
+      errno = EADDRNOTAVAIL;
+      break;
+    case WSAENETDOWN:
+      errno = ENETDOWN;
+      break;
+    case WSAENETUNREACH:
+      errno = ENETUNREACH;
+      break;
+    case WSAENETRESET:
+      errno = ENETRESET;
+      break;
+    case WSAECONNABORTED:
+      errno = ECONNABORTED;
+      break;
+    case WSAECONNRESET:
+      errno = ECONNRESET;
+      break;
+    case WSAENOBUFS:
+      errno = ENOBUFS;
+      break;
+    case WSAEISCONN:
+      errno = EISCONN;
+      break;
+    case WSAENOTCONN:
+      errno = ENOTCONN;
+      break;
+    case WSAETIMEDOUT:
+      errno = ETIMEDOUT;
+      break;
+    case WSAECONNREFUSED:
+      errno = ECONNREFUSED;
+      break;
+    case WSAELOOP:
+      errno = ELOOP;
+      break;
+    case WSAEHOSTUNREACH:
+      errno = EHOSTUNREACH;
+      break;
+    default:
+      errno = (err > 10000 && err < 10025) ? err - 10000 : err;
+      break;
+    }
+}
diff --git a/src/grep/gnulib-tests/warn-on-use.h b/src/grep/gnulib-tests/warn-on-use.h
new file mode 100644
index 0000000..612937a
--- /dev/null
+++ b/src/grep/gnulib-tests/warn-on-use.h
@@ -0,0 +1,149 @@
+/* A C macro for emitting warnings if a function is used.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* _GL_WARN_ON_USE (function, "literal string") issues a declaration
+   for FUNCTION which will then trigger a compiler warning containing
+   the text of "literal string" anywhere that function is called, if
+   supported by the compiler.  If the compiler does not support this
+   feature, the macro expands to an unused extern declaration.
+
+   _GL_WARN_ON_USE_ATTRIBUTE ("literal string") expands to the
+   attribute used in _GL_WARN_ON_USE.  If the compiler does not support
+   this feature, it expands to empty.
+
+   These macros are useful for marking a function as a potential
+   portability trap, with the intent that "literal string" include
+   instructions on the replacement function that should be used
+   instead.
+   _GL_WARN_ON_USE is for functions with 'extern' linkage.
+   _GL_WARN_ON_USE_ATTRIBUTE is for functions with 'static' or 'inline'
+   linkage.
+
+   However, one of the reasons that a function is a portability trap is
+   if it has the wrong signature.  Declaring FUNCTION with a different
+   signature in C is a compilation error, so this macro must use the
+   same type as any existing declaration so that programs that avoid
+   the problematic FUNCTION do not fail to compile merely because they
+   included a header that poisoned the function.  But this implies that
+   _GL_WARN_ON_USE is only safe to use if FUNCTION is known to already
+   have a declaration.  Use of this macro implies that there must not
+   be any other macro hiding the declaration of FUNCTION; but
+   undefining FUNCTION first is part of the poisoning process anyway
+   (although for symbols that are provided only via a macro, the result
+   is a compilation error rather than a warning containing
+   "literal string").  Also note that in C++, it is only safe to use if
+   FUNCTION has no overloads.
+
+   For an example, it is possible to poison 'getline' by:
+   - adding a call to gl_WARN_ON_USE_PREPARE([[#include <stdio.h>]],
+     [getline]) in configure.ac, which potentially defines
+     HAVE_RAW_DECL_GETLINE
+   - adding this code to a header that wraps the system <stdio.h>:
+     #undef getline
+     #if HAVE_RAW_DECL_GETLINE
+     _GL_WARN_ON_USE (getline, "getline is required by POSIX 2008, but"
+       "not universally present; use the gnulib module getline");
+     #endif
+
+   It is not possible to directly poison global variables.  But it is
+   possible to write a wrapper accessor function, and poison that
+   (less common usage, like &environ, will cause a compilation error
+   rather than issue the nice warning, but the end result of informing
+   the developer about their portability problem is still achieved):
+     #if HAVE_RAW_DECL_ENVIRON
+     static char ***
+     rpl_environ (void) { return &environ; }
+     _GL_WARN_ON_USE (rpl_environ, "environ is not always properly declared");
+     # undef environ
+     # define environ (*rpl_environ ())
+     #endif
+   or better (avoiding contradictory use of 'static' and 'extern'):
+     #if HAVE_RAW_DECL_ENVIRON
+     static char ***
+     _GL_WARN_ON_USE_ATTRIBUTE ("environ is not always properly declared")
+     rpl_environ (void) { return &environ; }
+     # undef environ
+     # define environ (*rpl_environ ())
+     #endif
+   */
+#ifndef _GL_WARN_ON_USE
+
+# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
+/* A compiler attribute is available in gcc versions 4.3.0 and later.  */
+#  define _GL_WARN_ON_USE(function, message) \
+extern __typeof__ (function) function __attribute__ ((__warning__ (message)))
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message) \
+  __attribute__ ((__warning__ (message)))
+# elif __clang_major__ >= 4
+/* Another compiler attribute is available in clang.  */
+#  define _GL_WARN_ON_USE(function, message) \
+extern __typeof__ (function) function \
+  __attribute__ ((__diagnose_if__ (1, message, "warning")))
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message) \
+  __attribute__ ((__diagnose_if__ (1, message, "warning")))
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+/* Verify the existence of the function.  */
+#  define _GL_WARN_ON_USE(function, message) \
+extern __typeof__ (function) function
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message)
+# else /* Unsupported.  */
+#  define _GL_WARN_ON_USE(function, message) \
+_GL_WARN_EXTERN_C int _gl_warn_on_use
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message)
+# endif
+#endif
+
+/* _GL_WARN_ON_USE_CXX (function, rettype_gcc, rettype_clang, parameters_and_attributes, "message")
+   is like _GL_WARN_ON_USE (function, "message"), except that in C++ mode the
+   function is declared with the given prototype, consisting of return type,
+   parameters, and attributes.
+   This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does
+   not work in this case.  */
+#ifndef _GL_WARN_ON_USE_CXX
+# if !defined __cplusplus
+#  define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+     _GL_WARN_ON_USE (function, msg)
+# else
+#  if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
+/* A compiler attribute is available in gcc versions 4.3.0 and later.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_gcc function parameters_and_attributes \
+  __attribute__ ((__warning__ (msg)))
+#  elif __clang_major__ >= 4
+/* Another compiler attribute is available in clang.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_clang function parameters_and_attributes \
+  __attribute__ ((__diagnose_if__ (1, msg, "warning")))
+#  elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+/* Verify the existence of the function.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_gcc function parameters_and_attributes
+#  else /* Unsupported.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+_GL_WARN_EXTERN_C int _gl_warn_on_use
+#  endif
+# endif
+#endif
+
+/* _GL_WARN_EXTERN_C declaration;
+   performs the declaration with C linkage.  */
+#ifndef _GL_WARN_EXTERN_C
+# if defined __cplusplus
+#  define _GL_WARN_EXTERN_C extern "C"
+# else
+#  define _GL_WARN_EXTERN_C extern
+# endif
+#endif
diff --git a/src/grep/gnulib-tests/windows-thread.c b/src/grep/gnulib-tests/windows-thread.c
new file mode 100644
index 0000000..a60967f
--- /dev/null
+++ b/src/grep/gnulib-tests/windows-thread.c
@@ -0,0 +1,243 @@
+/* Creating and controlling threads (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-win32.h.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "windows-thread.h"
+
+#include <errno.h>
+#include <process.h>
+#include <stdlib.h>
+
+#include "windows-once.h"
+#include "windows-tls.h"
+
+/* The Thread-Local Storage (TLS) key that allows to access each thread's
+   'struct glwthread_thread_struct *' pointer.  */
+static DWORD self_key = (DWORD)-1;
+
+/* Initializes self_key.  This function must only be called once.  */
+static void
+do_init_self_key (void)
+{
+  self_key = TlsAlloc ();
+  /* If this fails, we're hosed.  */
+  if (self_key == (DWORD)-1)
+    abort ();
+}
+
+/* Initializes self_key.  */
+static void
+init_self_key (void)
+{
+  static glwthread_once_t once = GLWTHREAD_ONCE_INIT;
+  glwthread_once (&once, do_init_self_key);
+}
+
+/* This structure contains information about a thread.
+   It is stored in TLS under key self_key.  */
+struct glwthread_thread_struct
+{
+  /* Fields for managing the handle.  */
+  HANDLE volatile handle;
+  CRITICAL_SECTION handle_lock;
+  /* Fields for managing the exit value.  */
+  BOOL volatile detached;
+  void * volatile result;
+  /* Fields for managing the thread start.  */
+  void * (*func) (void *);
+  void *arg;
+};
+
+/* Return a real HANDLE object for the current thread.  */
+static HANDLE
+get_current_thread_handle (void)
+{
+  HANDLE this_handle;
+
+  /* GetCurrentThread() returns a pseudo-handle, i.e. only a symbolic
+     identifier, not a real handle.  */
+  if (!DuplicateHandle (GetCurrentProcess (), GetCurrentThread (),
+                        GetCurrentProcess (), &this_handle,
+                        0, FALSE, DUPLICATE_SAME_ACCESS))
+    abort ();
+  return this_handle;
+}
+
+glwthread_thread_t
+glwthread_thread_self (void)
+{
+  glwthread_thread_t thread;
+
+  if (self_key == (DWORD)-1)
+    init_self_key ();
+  thread = TlsGetValue (self_key);
+  if (thread == NULL)
+    {
+      /* This happens only in threads that have not been created through
+         glthread_create(), such as the main thread.  */
+      for (;;)
+        {
+          thread =
+            (struct glwthread_thread_struct *)
+            malloc (sizeof (struct glwthread_thread_struct));
+          if (thread != NULL)
+            break;
+          /* Memory allocation failed.  There is not much we can do.  Have to
+             busy-loop, waiting for the availability of memory.  */
+          Sleep (1);
+        }
+
+      thread->handle = get_current_thread_handle ();
+      InitializeCriticalSection (&thread->handle_lock);
+      thread->detached = FALSE; /* This can lead to a memory leak.  */
+      thread->result = NULL; /* just to be deterministic */
+      TlsSetValue (self_key, thread);
+    }
+  return thread;
+}
+
+/* The main function of a freshly creating thread.  It's a wrapper around
+   the FUNC and ARG arguments passed to glthread_create_func.  */
+static unsigned int WINAPI
+wrapper_func (void *varg)
+{
+  struct glwthread_thread_struct *thread =
+    (struct glwthread_thread_struct *) varg;
+
+  EnterCriticalSection (&thread->handle_lock);
+  /* Create a new handle for the thread only if the parent thread did not yet
+     fill in the handle.  */
+  if (thread->handle == NULL)
+    thread->handle = get_current_thread_handle ();
+  LeaveCriticalSection (&thread->handle_lock);
+
+  if (self_key == (DWORD)-1)
+    init_self_key ();
+  TlsSetValue (self_key, thread);
+
+  /* Run the thread.  Store the exit value if the thread was not terminated
+     otherwise.  */
+  thread->result = thread->func (thread->arg);
+
+  /* Process the TLS destructors.  */
+  glwthread_tls_process_destructors ();
+
+  if (thread->detached)
+    {
+      /* Clean up the thread, like thrd_join would do.  */
+      DeleteCriticalSection (&thread->handle_lock);
+      CloseHandle (thread->handle);
+      free (thread);
+    }
+
+  return 0;
+}
+
+int
+glwthread_thread_create (glwthread_thread_t *threadp, unsigned int attr,
+                         void * (*func) (void *), void *arg)
+{
+  struct glwthread_thread_struct *thread =
+    (struct glwthread_thread_struct *)
+    malloc (sizeof (struct glwthread_thread_struct));
+  if (thread == NULL)
+    return ENOMEM;
+  thread->handle = NULL;
+  InitializeCriticalSection (&thread->handle_lock);
+  thread->detached = (attr & GLWTHREAD_ATTR_DETACHED ? TRUE : FALSE);
+  thread->result = NULL; /* just to be deterministic */
+  thread->func = func;
+  thread->arg = arg;
+
+  {
+    unsigned int thread_id;
+    HANDLE thread_handle;
+
+    thread_handle = (HANDLE)
+      _beginthreadex (NULL, 100000, wrapper_func, thread, 0, &thread_id);
+      /* calls CreateThread with the same arguments */
+    if (thread_handle == NULL)
+      {
+        DeleteCriticalSection (&thread->handle_lock);
+        free (thread);
+        return EAGAIN;
+      }
+
+    EnterCriticalSection (&thread->handle_lock);
+    if (thread->handle == NULL)
+      thread->handle = thread_handle;
+    else
+      /* thread->handle was already set by the thread itself.  */
+      CloseHandle (thread_handle);
+    LeaveCriticalSection (&thread->handle_lock);
+
+    *threadp = thread;
+    return 0;
+  }
+}
+
+int
+glwthread_thread_join (glwthread_thread_t thread, void **retvalp)
+{
+  if (thread == NULL)
+    return EINVAL;
+
+  if (thread == glwthread_thread_self ())
+    return EDEADLK;
+
+  if (thread->detached)
+    return EINVAL;
+
+  if (WaitForSingleObject (thread->handle, INFINITE) == WAIT_FAILED)
+    return EINVAL;
+
+  if (retvalp != NULL)
+    *retvalp = thread->result;
+
+  DeleteCriticalSection (&thread->handle_lock);
+  CloseHandle (thread->handle);
+  free (thread);
+
+  return 0;
+}
+
+int
+glwthread_thread_detach (glwthread_thread_t thread)
+{
+  if (thread == NULL)
+    return EINVAL;
+
+  if (thread->detached)
+    return EINVAL;
+
+  thread->detached = TRUE;
+  return 0;
+}
+
+void
+glwthread_thread_exit (void *retval)
+{
+  glwthread_thread_t thread = glwthread_thread_self ();
+  thread->result = retval;
+  glwthread_tls_process_destructors ();
+  _endthreadex (0); /* calls ExitThread (0) */
+  abort ();
+}
diff --git a/src/grep/gnulib-tests/windows-thread.h b/src/grep/gnulib-tests/windows-thread.h
new file mode 100644
index 0000000..680565d
--- /dev/null
+++ b/src/grep/gnulib-tests/windows-thread.h
@@ -0,0 +1,55 @@
+/* Creating and controlling threads (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-win32.h.  */
+
+#ifndef _WINDOWS_THREAD_H
+#define _WINDOWS_THREAD_H
+
+#define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#include <windows.h>
+
+/* The glwthread_thread_t is a pointer to a structure in memory.
+   Why not the thread handle?  If it were the thread handle, it would be hard
+   to implement glwthread_thread_self() (since GetCurrentThread () returns a
+   pseudo-handle, DuplicateHandle (GetCurrentThread ()) returns a handle that
+   must be closed afterwards, and there is no function for quickly retrieving
+   a thread handle from its id).
+   Why not the thread id?  I tried it.  It did not work: Sometimes ids appeared
+   that did not belong to running threads, and glthread_join failed with ESRCH.
+ */
+typedef struct glwthread_thread_struct *glwthread_thread_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* attr is a bit mask, consisting of the following bits: */
+#define GLWTHREAD_ATTR_DETACHED 1
+extern int glwthread_thread_create (glwthread_thread_t *threadp,
+                                    unsigned int attr,
+                                    void * (*func) (void *), void *arg);
+extern int glwthread_thread_join (glwthread_thread_t thread, void **retvalp);
+extern int glwthread_thread_detach (glwthread_thread_t thread);
+extern glwthread_thread_t glwthread_thread_self (void);
+extern _Noreturn void glwthread_thread_exit (void *retval);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _WINDOWS_THREAD_H */
diff --git a/src/grep/gnulib-tests/windows-tls.c b/src/grep/gnulib-tests/windows-tls.c
new file mode 100644
index 0000000..dfadcfd
--- /dev/null
+++ b/src/grep/gnulib-tests/windows-tls.c
@@ -0,0 +1,339 @@
+/* Thread-local storage (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "windows-tls.h"
+
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+
+#include "windows-once.h"
+
+void *
+glwthread_tls_get (glwthread_tls_key_t key)
+{
+  return TlsGetValue (key);
+}
+
+int
+glwthread_tls_set (glwthread_tls_key_t key, void *value)
+{
+  if (!TlsSetValue (key, value))
+    return EINVAL;
+  return 0;
+}
+
+/* The following variables keep track of TLS keys with non-NULL destructor.  */
+
+static glwthread_once_t dtor_table_init_once = GLWTHREAD_ONCE_INIT;
+
+static CRITICAL_SECTION dtor_table_lock;
+
+struct dtor { glwthread_tls_key_t key; void (*destructor) (void *); };
+
+/* The table of dtors.  */
+static struct dtor *dtor_table;
+/* Number of active entries in the dtor_table.  */
+static unsigned int dtors_count;
+/* Valid indices into dtor_table are 0..dtors_used-1.  */
+static unsigned int dtors_used;
+/* Allocation size of dtor_table.  */
+static unsigned int dtors_allocated;
+/* Invariant: 0 <= dtors_count <= dtors_used <= dtors_allocated.  */
+
+/* Number of threads that are currently processing destructors.  */
+static unsigned int dtor_processing_threads;
+
+static void
+dtor_table_initialize (void)
+{
+  InitializeCriticalSection (&dtor_table_lock);
+  /* The other variables are already initialized to NULL or 0, respectively.  */
+}
+
+static void
+dtor_table_ensure_initialized (void)
+{
+  glwthread_once (&dtor_table_init_once, dtor_table_initialize);
+}
+
+/* Shrinks dtors_used down to dtors_count, by replacing inactive entries
+   with active ones.  */
+static void
+dtor_table_shrink_used (void)
+{
+  unsigned int i = 0;
+  unsigned int j = dtors_used;
+
+  for (;;)
+    {
+      BOOL i_found = FALSE;
+      BOOL j_found = FALSE;
+      /* Find the next inactive entry, from the left.  */
+      for (; i < dtors_count;)
+        {
+          if (dtor_table[i].destructor == NULL)
+            {
+              i_found = TRUE;
+              break;
+            }
+          i++;
+        }
+
+      /* Find the next active entry, from the right.  */
+      for (; j > dtors_count;)
+        {
+          j--;
+          if (dtor_table[j].destructor != NULL)
+            {
+              j_found = TRUE;
+              break;
+            }
+        }
+
+      if (i_found != j_found)
+        /* dtors_count was apparently wrong.  */
+        abort ();
+
+      if (!i_found)
+        break;
+
+      /* i_found and j_found are TRUE.  Swap the two entries.  */
+      dtor_table[i] = dtor_table[j];
+
+      i++;
+    }
+
+  dtors_used = dtors_count;
+}
+
+void
+glwthread_tls_process_destructors (void)
+{
+  unsigned int repeat;
+
+  dtor_table_ensure_initialized ();
+
+  EnterCriticalSection (&dtor_table_lock);
+  if (dtor_processing_threads == 0)
+    {
+      /* Now it's the appropriate time for shrinking dtors_used.  */
+      if (dtors_used > dtors_count)
+        dtor_table_shrink_used ();
+    }
+  dtor_processing_threads++;
+
+  for (repeat = GLWTHREAD_DESTRUCTOR_ITERATIONS; repeat > 0; repeat--)
+    {
+      unsigned int destructors_run = 0;
+
+      /* Iterate across dtor_table.  We don't need to make a copy of dtor_table,
+         because
+           * When another thread calls glwthread_tls_key_create with a non-NULL
+             destructor argument, this will possibly reallocate the dtor_table
+             array and increase dtors_allocated as well as dtors_used and
+             dtors_count, but it will not change dtors_used nor the contents of
+             the first dtors_used entries of dtor_table.
+           * When another thread calls glwthread_tls_key_delete, this will
+             possibly set some 'destructor' member to NULL, thus marking an
+             entry as inactive, but it will not otherwise change dtors_used nor
+             the contents of the first dtors_used entries of dtor_table.  */
+      unsigned int i_limit = dtors_used;
+      unsigned int i;
+
+      for (i = 0; i < i_limit; i++)
+        {
+          struct dtor current = dtor_table[i];
+          if (current.destructor != NULL)
+            {
+              /* The current dtor has not been deleted yet.  */
+              void *current_value = glwthread_tls_get (current.key);
+              if (current_value != NULL)
+                {
+                  /* The current value is non-NULL.  Run the destructor.  */
+                  glwthread_tls_set (current.key, NULL);
+                  LeaveCriticalSection (&dtor_table_lock);
+                  current.destructor (current_value);
+                  EnterCriticalSection (&dtor_table_lock);
+                  destructors_run++;
+                }
+            }
+        }
+
+      /* When all TLS values were already NULL, no further iterations are
+         needed.  */
+      if (destructors_run == 0)
+        break;
+    }
+
+  dtor_processing_threads--;
+  LeaveCriticalSection (&dtor_table_lock);
+}
+
+int
+glwthread_tls_key_create (glwthread_tls_key_t *keyp, void (*destructor) (void *))
+{
+  if (destructor != NULL)
+    {
+      dtor_table_ensure_initialized ();
+
+      EnterCriticalSection (&dtor_table_lock);
+      if (dtor_processing_threads == 0)
+        {
+          /* Now it's the appropriate time for shrinking dtors_used.  */
+          if (dtors_used > dtors_count)
+            dtor_table_shrink_used ();
+        }
+
+      while (dtors_used == dtors_allocated)
+        {
+          /* Need to grow the dtor_table.  */
+          unsigned int new_allocated = 2 * dtors_allocated + 1;
+          if (new_allocated < 7)
+            new_allocated = 7;
+          if (new_allocated <= dtors_allocated) /* overflow? */
+            new_allocated = UINT_MAX;
+
+          LeaveCriticalSection (&dtor_table_lock);
+          {
+            struct dtor *new_table =
+              (struct dtor *) malloc (new_allocated * sizeof (struct dtor));
+            if (new_table == NULL)
+              return ENOMEM;
+            EnterCriticalSection (&dtor_table_lock);
+            /* Attention! dtors_used, dtors_allocated may have changed!  */
+            if (dtors_used < new_allocated)
+              {
+                if (dtors_allocated < new_allocated)
+                  {
+                    /* The new_table is useful.  */
+                    memcpy (new_table, dtor_table,
+                            dtors_used * sizeof (struct dtor));
+                    dtor_table = new_table;
+                    dtors_allocated = new_allocated;
+                  }
+                else
+                  {
+                    /* The new_table is not useful, since another thread
+                       meanwhile allocated a drop_table that is at least
+                       as large.  */
+                    free (new_table);
+                  }
+                break;
+              }
+            /* The new_table is not useful, since other threads increased
+               dtors_used.  Free it any retry.  */
+            free (new_table);
+          }
+        }
+      /* Here dtors_used < dtors_allocated.  */
+      {
+        /* Allocate a new key.  */
+        glwthread_tls_key_t key = TlsAlloc ();
+        if (key == (DWORD)-1)
+          {
+            LeaveCriticalSection (&dtor_table_lock);
+            return EAGAIN;
+          }
+        /* Store the new dtor in the dtor_table, after all used entries.
+           Do not overwrite inactive entries with indices < dtors_used, in order
+           not to disturb glwthread_tls_process_destructors invocations that may
+           be executing in other threads.  */
+        dtor_table[dtors_used].key = key;
+        dtor_table[dtors_used].destructor = destructor;
+        dtors_used++;
+        dtors_count++;
+        LeaveCriticalSection (&dtor_table_lock);
+        *keyp = key;
+      }
+    }
+  else
+    {
+      /* Allocate a new key.  */
+      glwthread_tls_key_t key = TlsAlloc ();
+      if (key == (DWORD)-1)
+        return EAGAIN;
+      *keyp = key;
+    }
+  return 0;
+}
+
+int
+glwthread_tls_key_delete (glwthread_tls_key_t key)
+{
+  /* Should the destructor be called for all threads that are currently running?
+     Probably not, because
+       - ISO C does not specify when the destructor is to be invoked at all.
+       - In POSIX, the destructor functions specified with pthread_key_create()
+         are invoked at thread exit.
+       - It would be hard to implement, because there are no primitives for
+         accessing thread-specific values from a different thread.  */
+  dtor_table_ensure_initialized ();
+
+  EnterCriticalSection (&dtor_table_lock);
+  if (dtor_processing_threads == 0)
+    {
+      /* Now it's the appropriate time for shrinking dtors_used.  */
+      if (dtors_used > dtors_count)
+        dtor_table_shrink_used ();
+      /* Here dtors_used == dtors_count.  */
+
+      /* Find the key in dtor_table.  */
+      {
+        unsigned int i_limit = dtors_used;
+        unsigned int i;
+
+        for (i = 0; i < i_limit; i++)
+          if (dtor_table[i].key == key)
+            {
+              if (i < dtors_used - 1)
+                /* Swap the entries i and dtors_used - 1.  */
+                dtor_table[i] = dtor_table[dtors_used - 1];
+              dtors_count = dtors_used = dtors_used - 1;
+              break;
+            }
+      }
+    }
+  else
+    {
+      /* Be careful not to disturb the glwthread_tls_process_destructors
+         invocations that are executing in other threads.  */
+      unsigned int i_limit = dtors_used;
+      unsigned int i;
+
+      for (i = 0; i < i_limit; i++)
+        if (dtor_table[i].destructor != NULL /* skip inactive entries */
+            && dtor_table[i].key == key)
+          {
+            /* Mark this entry as inactive.  */
+            dtor_table[i].destructor = NULL;
+            dtors_count = dtors_count - 1;
+            break;
+          }
+    }
+  LeaveCriticalSection (&dtor_table_lock);
+  /* Now we have ensured that glwthread_tls_process_destructors will no longer
+     use this key.  */
+
+  if (!TlsFree (key))
+    return EINVAL;
+  return 0;
+}
diff --git a/src/grep/gnulib-tests/windows-tls.h b/src/grep/gnulib-tests/windows-tls.h
new file mode 100644
index 0000000..c822d25
--- /dev/null
+++ b/src/grep/gnulib-tests/windows-tls.h
@@ -0,0 +1,42 @@
+/* Thread-local storage (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
+
+#ifndef _WINDOWS_TLS_H
+#define _WINDOWS_TLS_H
+
+#define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#include <windows.h>
+
+typedef DWORD glwthread_tls_key_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int glwthread_tls_key_create (glwthread_tls_key_t *keyp, void (*destructor) (void *));
+extern void *glwthread_tls_get (glwthread_tls_key_t key);
+extern int glwthread_tls_set (glwthread_tls_key_t key, void *value);
+extern int glwthread_tls_key_delete (glwthread_tls_key_t key);
+extern void glwthread_tls_process_destructors (void);
+#define GLWTHREAD_DESTRUCTOR_ITERATIONS 4
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _WINDOWS_TLS_H */
diff --git a/src/grep/gnulib-tests/xsize.c b/src/grep/gnulib-tests/xsize.c
new file mode 100644
index 0000000..b3d73a2
--- /dev/null
+++ b/src/grep/gnulib-tests/xsize.c
@@ -0,0 +1,21 @@
+/* Checked size_t computations.
+
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define XSIZE_INLINE _GL_EXTERN_INLINE
+#include "xsize.h"
diff --git a/src/grep/gnulib-tests/xsize.h b/src/grep/gnulib-tests/xsize.h
new file mode 100644
index 0000000..91fa877
--- /dev/null
+++ b/src/grep/gnulib-tests/xsize.h
@@ -0,0 +1,108 @@
+/* xsize.h -- Checked size_t computations.
+
+   Copyright (C) 2003, 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _XSIZE_H
+#define _XSIZE_H
+
+/* Get size_t.  */
+#include <stddef.h>
+
+/* Get SIZE_MAX.  */
+#include <limits.h>
+#if HAVE_STDINT_H
+# include <stdint.h>
+#endif
+
+/* Get ATTRIBUTE_PURE.  */
+#include "attribute.h"
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef XSIZE_INLINE
+# define XSIZE_INLINE _GL_INLINE
+#endif
+
+/* The size of memory objects is often computed through expressions of
+   type size_t. Example:
+      void* p = malloc (header_size + n * element_size).
+   These computations can lead to overflow.  When this happens, malloc()
+   returns a piece of memory that is way too small, and the program then
+   crashes while attempting to fill the memory.
+   To avoid this, the functions and macros in this file check for overflow.
+   The convention is that SIZE_MAX represents overflow.
+   malloc (SIZE_MAX) is not guaranteed to fail -- think of a malloc
+   implementation that uses mmap --, it's recommended to use size_overflow_p()
+   or size_in_bounds_p() before invoking malloc().
+   The example thus becomes:
+      size_t size = xsum (header_size, xtimes (n, element_size));
+      void *p = (size_in_bounds_p (size) ? malloc (size) : NULL);
+*/
+
+/* Convert an arbitrary value >= 0 to type size_t.  */
+#define xcast_size_t(N) \
+  ((N) <= SIZE_MAX ? (size_t) (N) : SIZE_MAX)
+
+/* Sum of two sizes, with overflow check.  */
+XSIZE_INLINE size_t ATTRIBUTE_PURE
+xsum (size_t size1, size_t size2)
+{
+  size_t sum = size1 + size2;
+  return (sum >= size1 ? sum : SIZE_MAX);
+}
+
+/* Sum of three sizes, with overflow check.  */
+XSIZE_INLINE size_t ATTRIBUTE_PURE
+xsum3 (size_t size1, size_t size2, size_t size3)
+{
+  return xsum (xsum (size1, size2), size3);
+}
+
+/* Sum of four sizes, with overflow check.  */
+XSIZE_INLINE size_t ATTRIBUTE_PURE
+xsum4 (size_t size1, size_t size2, size_t size3, size_t size4)
+{
+  return xsum (xsum (xsum (size1, size2), size3), size4);
+}
+
+/* Maximum of two sizes, with overflow check.  */
+XSIZE_INLINE size_t ATTRIBUTE_PURE
+xmax (size_t size1, size_t size2)
+{
+  /* No explicit check is needed here, because for any n:
+     max (SIZE_MAX, n) == SIZE_MAX and max (n, SIZE_MAX) == SIZE_MAX.  */
+  return (size1 >= size2 ? size1 : size2);
+}
+
+/* Multiplication of a count with an element size, with overflow check.
+   The count must be >= 0 and the element size must be > 0.
+   This is a macro, not a function, so that it works correctly even
+   when N is of a wider type and N > SIZE_MAX.  */
+#define xtimes(N, ELSIZE) \
+  ((N) <= SIZE_MAX / (ELSIZE) ? (size_t) (N) * (ELSIZE) : SIZE_MAX)
+
+/* Check for overflow.  */
+#define size_overflow_p(SIZE) \
+  ((SIZE) == SIZE_MAX)
+/* Check against overflow.  */
+#define size_in_bounds_p(SIZE) \
+  ((SIZE) != SIZE_MAX)
+
+_GL_INLINE_HEADER_END
+
+#endif /* _XSIZE_H */
diff --git a/src/grep/gnulib-tests/xstrtol-error.c b/src/grep/gnulib-tests/xstrtol-error.c
new file mode 100644
index 0000000..80b650f
--- /dev/null
+++ b/src/grep/gnulib-tests/xstrtol-error.c
@@ -0,0 +1,98 @@
+/* A more useful interface to strtol.
+
+   Copyright (C) 1995-1996, 1998-1999, 2001-2004, 2006-2021 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+#include "xstrtol-error.h"
+
+#include <stdlib.h>
+
+#include "error.h"
+#include "exitfail.h"
+#include "gettext.h"
+
+#define N_(msgid) msgid
+
+/* Report an error for an invalid integer in an option argument.
+
+   ERR is the error code returned by one of the xstrto* functions.
+
+   Use OPT_IDX to decide whether to print the short option string "C"
+   or "-C" or a long option string derived from LONG_OPTION.  OPT_IDX
+   is -2 if the short option "C" was used, without any leading "-"; it
+   is -1 if the short option "-C" was used; otherwise it is an index
+   into LONG_OPTIONS, which should have a name preceded by two '-'
+   characters.
+
+   ARG is the option-argument containing the integer.
+
+   After reporting an error, exit with status EXIT_STATUS if it is
+   nonzero.  */
+
+static void
+xstrtol_error (enum strtol_error err,
+               int opt_idx, char c, struct option const *long_options,
+               char const *arg,
+               int exit_status)
+{
+  char const *hyphens = "--";
+  char const *msgid;
+  char const *option;
+  char option_buffer[2];
+
+  switch (err)
+    {
+    default:
+      abort ();
+
+    case LONGINT_INVALID:
+      msgid = N_("invalid %s%s argument '%s'");
+      break;
+
+    case LONGINT_INVALID_SUFFIX_CHAR:
+    case LONGINT_INVALID_SUFFIX_CHAR_WITH_OVERFLOW:
+      msgid = N_("invalid suffix in %s%s argument '%s'");
+      break;
+
+    case LONGINT_OVERFLOW:
+      msgid = N_("%s%s argument '%s' too large");
+      break;
+    }
+
+  if (opt_idx < 0)
+    {
+      hyphens -= opt_idx;
+      option_buffer[0] = c;
+      option_buffer[1] = '\0';
+      option = option_buffer;
+    }
+  else
+    option = long_options[opt_idx].name;
+
+  error (exit_status, 0, gettext (msgid), hyphens, option, arg);
+}
+
+/* Like xstrtol_error, except exit with a failure status.  */
+
+void
+xstrtol_fatal (enum strtol_error err,
+               int opt_idx, char c, struct option const *long_options,
+               char const *arg)
+{
+  xstrtol_error (err, opt_idx, c, long_options, arg, exit_failure);
+  abort ();
+}
diff --git a/src/grep/gnulib-tests/xstrtol-error.h b/src/grep/gnulib-tests/xstrtol-error.h
new file mode 100644
index 0000000..83abc68
--- /dev/null
+++ b/src/grep/gnulib-tests/xstrtol-error.h
@@ -0,0 +1,45 @@
+/* Error reporting interface for xstrto* functions.
+
+   Copyright (C) 1995-1996, 1998-1999, 2001-2004, 2006-2021 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef XSTRTOL_ERROR_H_
+# define XSTRTOL_ERROR_H_ 1
+
+# include "xstrtol.h"
+
+# include <getopt.h>
+
+/* Report an error for an invalid integer in an option argument.
+
+   ERR is the error code returned by one of the xstrto* functions.
+
+   Use OPT_IDX to decide whether to print the short option string "C"
+   or "-C" or a long option string derived from LONG_OPTION.  OPT_IDX
+   is -2 if the short option "C" was used, without any leading "-"; it
+   is -1 if the short option "-C" was used; otherwise it is an index
+   into LONG_OPTIONS, which should have a name preceded by two '-'
+   characters.
+
+   ARG is the option-argument containing the integer.
+
+   After reporting an error, exit with a failure status.  */
+
+_Noreturn void xstrtol_fatal (enum strtol_error,
+                              int, char, struct option const *,
+                              char const *);
+
+#endif /* not XSTRTOL_ERROR_H_ */
diff --git a/src/grep/gnulib-tests/zerosize-ptr.h b/src/grep/gnulib-tests/zerosize-ptr.h
new file mode 100644
index 0000000..bfeff50
--- /dev/null
+++ b/src/grep/gnulib-tests/zerosize-ptr.h
@@ -0,0 +1,82 @@
+/* Return a pointer to a zero-size object in memory.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* ISO C 99 does not allow memcmp(), memchr() etc. to be invoked with a NULL
+   argument.  Therefore this file produces a non-NULL pointer which cannot
+   be dereferenced, if possible.  */
+
+/* On Android, when targeting Android 4.4 or older with a GCC toolchain,
+   prevent a compilation error
+     "error: call to 'mmap' declared with attribute error: mmap is not
+      available with _FILE_OFFSET_BITS=64 when using GCC until android-21.
+      Either raise your minSdkVersion, disable _FILE_OFFSET_BITS=64, or
+      switch to Clang."
+   The files that we access in this compilation unit are less than 2 GB
+   large.  */
+#if defined __ANDROID__
+# undef _FILE_OFFSET_BITS
+# undef __USE_FILE_OFFSET64
+#endif
+
+#include <stdlib.h>
+
+/* Test whether mmap() and mprotect() are available.
+   We don't use HAVE_MMAP, because AC_FUNC_MMAP would not define it on HP-UX.
+   HAVE_MPROTECT is not enough, because mingw does not have mmap() but has an
+   mprotect() function in libgcc.a.
+   And OS/2 kLIBC has <sys/mman.h> and mprotect(), but not mmap().  */
+#if HAVE_SYS_MMAN_H && HAVE_MPROTECT && !defined __KLIBC__
+# include <fcntl.h>
+# include <unistd.h>
+# include <sys/types.h>
+# include <sys/mman.h>
+/* Define MAP_FILE when it isn't otherwise.  */
+# ifndef MAP_FILE
+#  define MAP_FILE 0
+# endif
+#endif
+
+/* Return a pointer to a zero-size object in memory (that is, actually, a
+   pointer to a page boundary where the previous page is readable and writable
+   and the next page is neither readable not writable), if possible.
+   Return NULL otherwise.  */
+
+static void *
+zerosize_ptr (void)
+{
+/* Use mmap and mprotect when they exist.  Don't test HAVE_MMAP, because it is
+   not defined on HP-UX 11 (since it does not support MAP_FIXED).  */
+#if HAVE_SYS_MMAN_H && HAVE_MPROTECT && !defined __KLIBC__
+# if HAVE_MAP_ANONYMOUS
+  const int flags = MAP_ANONYMOUS | MAP_PRIVATE;
+  const int fd = -1;
+# else /* !HAVE_MAP_ANONYMOUS */
+  const int flags = MAP_FILE | MAP_PRIVATE;
+  int fd = open ("/dev/zero", O_RDONLY, 0666);
+  if (fd >= 0)
+# endif
+    {
+      int pagesize = getpagesize ();
+      char *two_pages =
+        (char *) mmap (NULL, 2 * pagesize, PROT_READ | PROT_WRITE,
+                       flags, fd, 0);
+      if (two_pages != (char *)(-1)
+          && mprotect (two_pages + pagesize, pagesize, PROT_NONE) == 0)
+        return two_pages + pagesize;
+    }
+#endif
+  return NULL;
+}
diff --git a/src/grep/lib/Makefile.am b/src/grep/lib/Makefile.am
new file mode 100644
index 0000000..6a75199
--- /dev/null
+++ b/src/grep/lib/Makefile.am
@@ -0,0 +1,41 @@
+# Copyright 1997-1998, 2005-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+
+AM_CFLAGS =
+AM_CPPFLAGS =
+BUILT_SOURCES =
+CLEANFILES =
+EXTRA_DIST =
+MAINTAINERCLEANFILES =
+MOSTLYCLEANDIRS =
+MOSTLYCLEANFILES =
+SUFFIXES =
+noinst_LIBRARIES =
+
+include gnulib.mk
+
+AM_CFLAGS += $(GNULIB_WARN_CFLAGS) $(WERROR_CFLAGS)
+
+nodist_libgreputils_a_SOURCES = colorize.c
+libgreputils_a_SOURCES += colorize.h
+EXTRA_DIST += colorize-posix.c colorize-w32.c
+CLEANFILES += colorize.c
+colorize.c:
+	$(AM_V_at)echo '#include <$(COLORIZE_SOURCE)>' >$@-t
+	$(AM_V_at)mv $@-t $@
+
+libgreputils_a_LIBADD += $(LIBOBJS) $(ALLOCA)
+libgreputils_a_DEPENDENCIES += $(LIBOBJS) $(ALLOCA)
diff --git a/src/grep/lib/Makefile.in b/src/grep/lib/Makefile.in
new file mode 100644
index 0000000..9d6564e
--- /dev/null
+++ b/src/grep/lib/Makefile.in
@@ -0,0 +1,4314 @@
+# Makefile.in generated by automake 1.16d from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Copyright 1997-1998, 2005-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+
+# Copyright (C) 2002-2021 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file.  If not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License,
+# this file may be distributed as part of a program that
+# contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+# Reproduce by:
+# gnulib-tool --import --local-dir=gl \
+#  --lib=libgreputils \
+#  --source-base=lib \
+#  --m4-base=m4 \
+#  --doc-base=doc \
+#  --tests-base=gnulib-tests \
+#  --aux-dir=build-aux \
+#  --with-tests \
+#  --makefile-name=gnulib.mk \
+#  --no-conditional-dependencies \
+#  --no-libtool \
+#  --macro-prefix=gl \
+#  --avoid=lock-tests \
+#  --avoid=mbrtowc-tests \
+#  --avoid=update-copyright-tests \
+#  alloca \
+#  announce-gen \
+#  argmatch \
+#  c-ctype \
+#  c-stack \
+#  c-strcase \
+#  closeout \
+#  configmake \
+#  dfa \
+#  dirname-lgpl \
+#  do-release-commit-and-tag \
+#  error \
+#  exclude \
+#  fcntl-h \
+#  fdl \
+#  fnmatch \
+#  fstatat \
+#  fts \
+#  getopt-gnu \
+#  getpagesize \
+#  getprogname \
+#  gettext-h \
+#  git-version-gen \
+#  gitlog-to-changelog \
+#  gnu-web-doc-update \
+#  gnupload \
+#  hash \
+#  ignore-value \
+#  intprops \
+#  inttypes \
+#  isatty \
+#  isblank \
+#  iswctype \
+#  largefile \
+#  locale \
+#  lseek \
+#  maintainer-makefile \
+#  malloc-gnu \
+#  manywarnings \
+#  mbrlen \
+#  mbrtowc \
+#  memchr \
+#  memchr2 \
+#  mempcpy \
+#  minmax \
+#  obstack \
+#  openat-safer \
+#  perl \
+#  propername \
+#  rawmemchr \
+#  readme-release \
+#  realloc-gnu \
+#  regex \
+#  safe-read \
+#  same-inode \
+#  ssize_t \
+#  stddef \
+#  stdlib \
+#  stpcpy \
+#  strerror \
+#  string \
+#  strstr \
+#  strtoull \
+#  strtoumax \
+#  sys_stat \
+#  unistd \
+#  unlocked-io \
+#  update-copyright \
+#  useless-if-before-free \
+#  verify \
+#  version-etc-fsf \
+#  wchar \
+#  wcrtomb \
+#  wctob \
+#  wctype-h \
+#  windows-stat-inodes \
+#  xalloc \
+#  xbinary-io \
+#  xstrtoimax
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
+    case $$flg in \
+      *=*|--*) continue;; \
+        -*I) strip_trailopt 'I'; skip_next=yes;; \
+      -*I?*) strip_trailopt 'I';; \
+        -*O) strip_trailopt 'O'; skip_next=yes;; \
+      -*O?*) strip_trailopt 'O';; \
+        -*l) strip_trailopt 'l'; skip_next=yes;; \
+      -*l?*) strip_trailopt 'l';; \
+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
+    case $$flg in \
+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
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+install_sh_DATA = $(install_sh) -c -m 644
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+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+@GL_GENERATE_SIGSEGV_H_TRUE@am__append_1 = sigsegv.c stackvma.c
+@LIBUNISTRING_COMPILE_UNISTR_U8_MBTOUCR_TRUE@am__append_2 = unistr/u8-mbtoucr.c
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+@LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH_TRUE@am__append_4 = uniwidth/width.c
+subdir = lib
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+	$(top_srcdir)/m4/gettimeofday.m4 \
+	$(top_srcdir)/m4/gnulib-common.m4 \
+	$(top_srcdir)/m4/gnulib-comp.m4 \
+	$(top_srcdir)/m4/host-cpu-c-abi.m4 $(top_srcdir)/m4/i-ring.m4 \
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+# Make sure the list of sources is unique.  This is necessary because,
+# e.g., the same source file might be shared among _SOURCES variables
+# for different programs/libraries.
+am__define_uniq_tagged_files = \
+  list='$(am__tagged_files)'; \
+  unique=`for i in $$list; do \
+    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+  done | $(am__uniquify_input)`
+am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/gnulib.mk \
+	$(top_srcdir)/build-aux/depcomp alloca.c
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+pkglibexecdir = @pkglibexecdir@
+ACLOCAL = @ACLOCAL@
+ALLOCA = @ALLOCA@
+ALLOCA_H = @ALLOCA_H@
+AMTAR = @AMTAR@
+AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+APPLE_UNIVERSAL_BUILD = @APPLE_UNIVERSAL_BUILD@
+AR = @AR@
+ARFLAGS = @ARFLAGS@
+AUTOCONF = @AUTOCONF@
+AUTOHEADER = @AUTOHEADER@
+AUTOMAKE = @AUTOMAKE@
+AWK = @AWK@
+BITSIZEOF_PTRDIFF_T = @BITSIZEOF_PTRDIFF_T@
+BITSIZEOF_SIG_ATOMIC_T = @BITSIZEOF_SIG_ATOMIC_T@
+BITSIZEOF_SIZE_T = @BITSIZEOF_SIZE_T@
+BITSIZEOF_WCHAR_T = @BITSIZEOF_WCHAR_T@
+BITSIZEOF_WINT_T = @BITSIZEOF_WINT_T@
+CC = @CC@
+CCDEPMODE = @CCDEPMODE@
+CFLAGS = @CFLAGS@
+CFLAG_VISIBILITY = @CFLAG_VISIBILITY@
+COLORIZE_SOURCE = @COLORIZE_SOURCE@
+CONFIG_INCLUDE = @CONFIG_INCLUDE@
+CPP = @CPP@
+CPPFLAGS = @CPPFLAGS@
+CSCOPE = @CSCOPE@
+CTAGS = @CTAGS@
+CYGPATH_W = @CYGPATH_W@
+DEFS = @DEFS@
+DEPDIR = @DEPDIR@
+ECHO_C = @ECHO_C@
+ECHO_N = @ECHO_N@
+ECHO_T = @ECHO_T@
+EGREP = @EGREP@
+EMULTIHOP_HIDDEN = @EMULTIHOP_HIDDEN@
+EMULTIHOP_VALUE = @EMULTIHOP_VALUE@
+ENOLINK_HIDDEN = @ENOLINK_HIDDEN@
+ENOLINK_VALUE = @ENOLINK_VALUE@
+EOVERFLOW_HIDDEN = @EOVERFLOW_HIDDEN@
+EOVERFLOW_VALUE = @EOVERFLOW_VALUE@
+ERRNO_H = @ERRNO_H@
+ETAGS = @ETAGS@
+EXEEXT = @EXEEXT@
+FLOAT_H = @FLOAT_H@
+FNMATCH_H = @FNMATCH_H@
+GETOPT_CDEFS_H = @GETOPT_CDEFS_H@
+GETOPT_H = @GETOPT_H@
+GETTEXT_MACRO_VERSION = @GETTEXT_MACRO_VERSION@
+GL_CFLAG_ALLOW_WARNINGS = @GL_CFLAG_ALLOW_WARNINGS@
+GL_CXXFLAG_ALLOW_WARNINGS = @GL_CXXFLAG_ALLOW_WARNINGS@
+GL_GNULIB_ACCEPT = @GL_GNULIB_ACCEPT@
+GL_GNULIB_ACCEPT4 = @GL_GNULIB_ACCEPT4@
+GL_GNULIB_ACCESS = @GL_GNULIB_ACCESS@
+GL_GNULIB_ALIGNED_ALLOC = @GL_GNULIB_ALIGNED_ALLOC@
+GL_GNULIB_ALPHASORT = @GL_GNULIB_ALPHASORT@
+GL_GNULIB_ATOLL = @GL_GNULIB_ATOLL@
+GL_GNULIB_BIND = @GL_GNULIB_BIND@
+GL_GNULIB_BTOWC = @GL_GNULIB_BTOWC@
+GL_GNULIB_CALLOC_POSIX = @GL_GNULIB_CALLOC_POSIX@
+GL_GNULIB_CANONICALIZE_FILE_NAME = @GL_GNULIB_CANONICALIZE_FILE_NAME@
+GL_GNULIB_CHDIR = @GL_GNULIB_CHDIR@
+GL_GNULIB_CHOWN = @GL_GNULIB_CHOWN@
+GL_GNULIB_CLOSE = @GL_GNULIB_CLOSE@
+GL_GNULIB_CLOSEDIR = @GL_GNULIB_CLOSEDIR@
+GL_GNULIB_CONNECT = @GL_GNULIB_CONNECT@
+GL_GNULIB_COPY_FILE_RANGE = @GL_GNULIB_COPY_FILE_RANGE@
+GL_GNULIB_CREAT = @GL_GNULIB_CREAT@
+GL_GNULIB_CTIME = @GL_GNULIB_CTIME@
+GL_GNULIB_DIRFD = @GL_GNULIB_DIRFD@
+GL_GNULIB_DPRINTF = @GL_GNULIB_DPRINTF@
+GL_GNULIB_DUP = @GL_GNULIB_DUP@
+GL_GNULIB_DUP2 = @GL_GNULIB_DUP2@
+GL_GNULIB_DUP3 = @GL_GNULIB_DUP3@
+GL_GNULIB_DUPLOCALE = @GL_GNULIB_DUPLOCALE@
+GL_GNULIB_ENVIRON = @GL_GNULIB_ENVIRON@
+GL_GNULIB_EUIDACCESS = @GL_GNULIB_EUIDACCESS@
+GL_GNULIB_EXECL = @GL_GNULIB_EXECL@
+GL_GNULIB_EXECLE = @GL_GNULIB_EXECLE@
+GL_GNULIB_EXECLP = @GL_GNULIB_EXECLP@
+GL_GNULIB_EXECV = @GL_GNULIB_EXECV@
+GL_GNULIB_EXECVE = @GL_GNULIB_EXECVE@
+GL_GNULIB_EXECVP = @GL_GNULIB_EXECVP@
+GL_GNULIB_EXECVPE = @GL_GNULIB_EXECVPE@
+GL_GNULIB_EXPLICIT_BZERO = @GL_GNULIB_EXPLICIT_BZERO@
+GL_GNULIB_FACCESSAT = @GL_GNULIB_FACCESSAT@
+GL_GNULIB_FCHDIR = @GL_GNULIB_FCHDIR@
+GL_GNULIB_FCHMODAT = @GL_GNULIB_FCHMODAT@
+GL_GNULIB_FCHOWNAT = @GL_GNULIB_FCHOWNAT@
+GL_GNULIB_FCLOSE = @GL_GNULIB_FCLOSE@
+GL_GNULIB_FCNTL = @GL_GNULIB_FCNTL@
+GL_GNULIB_FDATASYNC = @GL_GNULIB_FDATASYNC@
+GL_GNULIB_FDOPEN = @GL_GNULIB_FDOPEN@
+GL_GNULIB_FDOPENDIR = @GL_GNULIB_FDOPENDIR@
+GL_GNULIB_FFLUSH = @GL_GNULIB_FFLUSH@
+GL_GNULIB_FFSL = @GL_GNULIB_FFSL@
+GL_GNULIB_FFSLL = @GL_GNULIB_FFSLL@
+GL_GNULIB_FGETC = @GL_GNULIB_FGETC@
+GL_GNULIB_FGETS = @GL_GNULIB_FGETS@
+GL_GNULIB_FNMATCH = @GL_GNULIB_FNMATCH@
+GL_GNULIB_FOPEN = @GL_GNULIB_FOPEN@
+GL_GNULIB_FPRINTF = @GL_GNULIB_FPRINTF@
+GL_GNULIB_FPRINTF_POSIX = @GL_GNULIB_FPRINTF_POSIX@
+GL_GNULIB_FPURGE = @GL_GNULIB_FPURGE@
+GL_GNULIB_FPUTC = @GL_GNULIB_FPUTC@
+GL_GNULIB_FPUTS = @GL_GNULIB_FPUTS@
+GL_GNULIB_FREAD = @GL_GNULIB_FREAD@
+GL_GNULIB_FREE_POSIX = @GL_GNULIB_FREE_POSIX@
+GL_GNULIB_FREOPEN = @GL_GNULIB_FREOPEN@
+GL_GNULIB_FSCANF = @GL_GNULIB_FSCANF@
+GL_GNULIB_FSEEK = @GL_GNULIB_FSEEK@
+GL_GNULIB_FSEEKO = @GL_GNULIB_FSEEKO@
+GL_GNULIB_FSTAT = @GL_GNULIB_FSTAT@
+GL_GNULIB_FSTATAT = @GL_GNULIB_FSTATAT@
+GL_GNULIB_FSYNC = @GL_GNULIB_FSYNC@
+GL_GNULIB_FTELL = @GL_GNULIB_FTELL@
+GL_GNULIB_FTELLO = @GL_GNULIB_FTELLO@
+GL_GNULIB_FTRUNCATE = @GL_GNULIB_FTRUNCATE@
+GL_GNULIB_FUTIMENS = @GL_GNULIB_FUTIMENS@
+GL_GNULIB_FWRITE = @GL_GNULIB_FWRITE@
+GL_GNULIB_GETC = @GL_GNULIB_GETC@
+GL_GNULIB_GETCHAR = @GL_GNULIB_GETCHAR@
+GL_GNULIB_GETCWD = @GL_GNULIB_GETCWD@
+GL_GNULIB_GETDELIM = @GL_GNULIB_GETDELIM@
+GL_GNULIB_GETDOMAINNAME = @GL_GNULIB_GETDOMAINNAME@
+GL_GNULIB_GETDTABLESIZE = @GL_GNULIB_GETDTABLESIZE@
+GL_GNULIB_GETENTROPY = @GL_GNULIB_GETENTROPY@
+GL_GNULIB_GETGROUPS = @GL_GNULIB_GETGROUPS@
+GL_GNULIB_GETHOSTNAME = @GL_GNULIB_GETHOSTNAME@
+GL_GNULIB_GETLINE = @GL_GNULIB_GETLINE@
+GL_GNULIB_GETLOADAVG = @GL_GNULIB_GETLOADAVG@
+GL_GNULIB_GETLOGIN = @GL_GNULIB_GETLOGIN@
+GL_GNULIB_GETLOGIN_R = @GL_GNULIB_GETLOGIN_R@
+GL_GNULIB_GETOPT_POSIX = @GL_GNULIB_GETOPT_POSIX@
+GL_GNULIB_GETPAGESIZE = @GL_GNULIB_GETPAGESIZE@
+GL_GNULIB_GETPASS = @GL_GNULIB_GETPASS@
+GL_GNULIB_GETPEERNAME = @GL_GNULIB_GETPEERNAME@
+GL_GNULIB_GETSOCKNAME = @GL_GNULIB_GETSOCKNAME@
+GL_GNULIB_GETSOCKOPT = @GL_GNULIB_GETSOCKOPT@
+GL_GNULIB_GETSUBOPT = @GL_GNULIB_GETSUBOPT@
+GL_GNULIB_GETTIMEOFDAY = @GL_GNULIB_GETTIMEOFDAY@
+GL_GNULIB_GETUMASK = @GL_GNULIB_GETUMASK@
+GL_GNULIB_GETUSERSHELL = @GL_GNULIB_GETUSERSHELL@
+GL_GNULIB_GRANTPT = @GL_GNULIB_GRANTPT@
+GL_GNULIB_GROUP_MEMBER = @GL_GNULIB_GROUP_MEMBER@
+GL_GNULIB_ICONV = @GL_GNULIB_ICONV@
+GL_GNULIB_IMAXABS = @GL_GNULIB_IMAXABS@
+GL_GNULIB_IMAXDIV = @GL_GNULIB_IMAXDIV@
+GL_GNULIB_INET_NTOP = @GL_GNULIB_INET_NTOP@
+GL_GNULIB_INET_PTON = @GL_GNULIB_INET_PTON@
+GL_GNULIB_IOCTL = @GL_GNULIB_IOCTL@
+GL_GNULIB_ISATTY = @GL_GNULIB_ISATTY@
+GL_GNULIB_ISBLANK = @GL_GNULIB_ISBLANK@
+GL_GNULIB_ISWBLANK = @GL_GNULIB_ISWBLANK@
+GL_GNULIB_ISWCTYPE = @GL_GNULIB_ISWCTYPE@
+GL_GNULIB_ISWDIGIT = @GL_GNULIB_ISWDIGIT@
+GL_GNULIB_ISWXDIGIT = @GL_GNULIB_ISWXDIGIT@
+GL_GNULIB_LCHMOD = @GL_GNULIB_LCHMOD@
+GL_GNULIB_LCHOWN = @GL_GNULIB_LCHOWN@
+GL_GNULIB_LINK = @GL_GNULIB_LINK@
+GL_GNULIB_LINKAT = @GL_GNULIB_LINKAT@
+GL_GNULIB_LISTEN = @GL_GNULIB_LISTEN@
+GL_GNULIB_LOCALECONV = @GL_GNULIB_LOCALECONV@
+GL_GNULIB_LOCALENAME = @GL_GNULIB_LOCALENAME@
+GL_GNULIB_LOCALTIME = @GL_GNULIB_LOCALTIME@
+GL_GNULIB_LSEEK = @GL_GNULIB_LSEEK@
+GL_GNULIB_LSTAT = @GL_GNULIB_LSTAT@
+GL_GNULIB_MALLOC_POSIX = @GL_GNULIB_MALLOC_POSIX@
+GL_GNULIB_MBRLEN = @GL_GNULIB_MBRLEN@
+GL_GNULIB_MBRTOWC = @GL_GNULIB_MBRTOWC@
+GL_GNULIB_MBSCASECMP = @GL_GNULIB_MBSCASECMP@
+GL_GNULIB_MBSCASESTR = @GL_GNULIB_MBSCASESTR@
+GL_GNULIB_MBSCHR = @GL_GNULIB_MBSCHR@
+GL_GNULIB_MBSCSPN = @GL_GNULIB_MBSCSPN@
+GL_GNULIB_MBSINIT = @GL_GNULIB_MBSINIT@
+GL_GNULIB_MBSLEN = @GL_GNULIB_MBSLEN@
+GL_GNULIB_MBSNCASECMP = @GL_GNULIB_MBSNCASECMP@
+GL_GNULIB_MBSNLEN = @GL_GNULIB_MBSNLEN@
+GL_GNULIB_MBSNRTOWCS = @GL_GNULIB_MBSNRTOWCS@
+GL_GNULIB_MBSPBRK = @GL_GNULIB_MBSPBRK@
+GL_GNULIB_MBSPCASECMP = @GL_GNULIB_MBSPCASECMP@
+GL_GNULIB_MBSRCHR = @GL_GNULIB_MBSRCHR@
+GL_GNULIB_MBSRTOWCS = @GL_GNULIB_MBSRTOWCS@
+GL_GNULIB_MBSSEP = @GL_GNULIB_MBSSEP@
+GL_GNULIB_MBSSPN = @GL_GNULIB_MBSSPN@
+GL_GNULIB_MBSSTR = @GL_GNULIB_MBSSTR@
+GL_GNULIB_MBSTOK_R = @GL_GNULIB_MBSTOK_R@
+GL_GNULIB_MBTOWC = @GL_GNULIB_MBTOWC@
+GL_GNULIB_MDA_ACCESS = @GL_GNULIB_MDA_ACCESS@
+GL_GNULIB_MDA_CHDIR = @GL_GNULIB_MDA_CHDIR@
+GL_GNULIB_MDA_CHMOD = @GL_GNULIB_MDA_CHMOD@
+GL_GNULIB_MDA_CLOSE = @GL_GNULIB_MDA_CLOSE@
+GL_GNULIB_MDA_CREAT = @GL_GNULIB_MDA_CREAT@
+GL_GNULIB_MDA_DUP = @GL_GNULIB_MDA_DUP@
+GL_GNULIB_MDA_DUP2 = @GL_GNULIB_MDA_DUP2@
+GL_GNULIB_MDA_ECVT = @GL_GNULIB_MDA_ECVT@
+GL_GNULIB_MDA_EXECL = @GL_GNULIB_MDA_EXECL@
+GL_GNULIB_MDA_EXECLE = @GL_GNULIB_MDA_EXECLE@
+GL_GNULIB_MDA_EXECLP = @GL_GNULIB_MDA_EXECLP@
+GL_GNULIB_MDA_EXECV = @GL_GNULIB_MDA_EXECV@
+GL_GNULIB_MDA_EXECVE = @GL_GNULIB_MDA_EXECVE@
+GL_GNULIB_MDA_EXECVP = @GL_GNULIB_MDA_EXECVP@
+GL_GNULIB_MDA_EXECVPE = @GL_GNULIB_MDA_EXECVPE@
+GL_GNULIB_MDA_FCLOSEALL = @GL_GNULIB_MDA_FCLOSEALL@
+GL_GNULIB_MDA_FCVT = @GL_GNULIB_MDA_FCVT@
+GL_GNULIB_MDA_FDOPEN = @GL_GNULIB_MDA_FDOPEN@
+GL_GNULIB_MDA_FILENO = @GL_GNULIB_MDA_FILENO@
+GL_GNULIB_MDA_GCVT = @GL_GNULIB_MDA_GCVT@
+GL_GNULIB_MDA_GETCWD = @GL_GNULIB_MDA_GETCWD@
+GL_GNULIB_MDA_GETPID = @GL_GNULIB_MDA_GETPID@
+GL_GNULIB_MDA_GETW = @GL_GNULIB_MDA_GETW@
+GL_GNULIB_MDA_ISATTY = @GL_GNULIB_MDA_ISATTY@
+GL_GNULIB_MDA_LSEEK = @GL_GNULIB_MDA_LSEEK@
+GL_GNULIB_MDA_MEMCCPY = @GL_GNULIB_MDA_MEMCCPY@
+GL_GNULIB_MDA_MKDIR = @GL_GNULIB_MDA_MKDIR@
+GL_GNULIB_MDA_MKTEMP = @GL_GNULIB_MDA_MKTEMP@
+GL_GNULIB_MDA_OPEN = @GL_GNULIB_MDA_OPEN@
+GL_GNULIB_MDA_PUTENV = @GL_GNULIB_MDA_PUTENV@
+GL_GNULIB_MDA_PUTW = @GL_GNULIB_MDA_PUTW@
+GL_GNULIB_MDA_READ = @GL_GNULIB_MDA_READ@
+GL_GNULIB_MDA_RMDIR = @GL_GNULIB_MDA_RMDIR@
+GL_GNULIB_MDA_STRDUP = @GL_GNULIB_MDA_STRDUP@
+GL_GNULIB_MDA_SWAB = @GL_GNULIB_MDA_SWAB@
+GL_GNULIB_MDA_TEMPNAM = @GL_GNULIB_MDA_TEMPNAM@
+GL_GNULIB_MDA_TZSET = @GL_GNULIB_MDA_TZSET@
+GL_GNULIB_MDA_UMASK = @GL_GNULIB_MDA_UMASK@
+GL_GNULIB_MDA_UNLINK = @GL_GNULIB_MDA_UNLINK@
+GL_GNULIB_MDA_WCSDUP = @GL_GNULIB_MDA_WCSDUP@
+GL_GNULIB_MDA_WRITE = @GL_GNULIB_MDA_WRITE@
+GL_GNULIB_MEMCHR = @GL_GNULIB_MEMCHR@
+GL_GNULIB_MEMMEM = @GL_GNULIB_MEMMEM@
+GL_GNULIB_MEMPCPY = @GL_GNULIB_MEMPCPY@
+GL_GNULIB_MEMRCHR = @GL_GNULIB_MEMRCHR@
+GL_GNULIB_MKDIR = @GL_GNULIB_MKDIR@
+GL_GNULIB_MKDIRAT = @GL_GNULIB_MKDIRAT@
+GL_GNULIB_MKDTEMP = @GL_GNULIB_MKDTEMP@
+GL_GNULIB_MKFIFO = @GL_GNULIB_MKFIFO@
+GL_GNULIB_MKFIFOAT = @GL_GNULIB_MKFIFOAT@
+GL_GNULIB_MKNOD = @GL_GNULIB_MKNOD@
+GL_GNULIB_MKNODAT = @GL_GNULIB_MKNODAT@
+GL_GNULIB_MKOSTEMP = @GL_GNULIB_MKOSTEMP@
+GL_GNULIB_MKOSTEMPS = @GL_GNULIB_MKOSTEMPS@
+GL_GNULIB_MKSTEMP = @GL_GNULIB_MKSTEMP@
+GL_GNULIB_MKSTEMPS = @GL_GNULIB_MKSTEMPS@
+GL_GNULIB_MKTIME = @GL_GNULIB_MKTIME@
+GL_GNULIB_NANOSLEEP = @GL_GNULIB_NANOSLEEP@
+GL_GNULIB_NL_LANGINFO = @GL_GNULIB_NL_LANGINFO@
+GL_GNULIB_NONBLOCKING = @GL_GNULIB_NONBLOCKING@
+GL_GNULIB_OBSTACK_PRINTF = @GL_GNULIB_OBSTACK_PRINTF@
+GL_GNULIB_OBSTACK_PRINTF_POSIX = @GL_GNULIB_OBSTACK_PRINTF_POSIX@
+GL_GNULIB_OPEN = @GL_GNULIB_OPEN@
+GL_GNULIB_OPENAT = @GL_GNULIB_OPENAT@
+GL_GNULIB_OPENDIR = @GL_GNULIB_OPENDIR@
+GL_GNULIB_OVERRIDES_STRUCT_STAT = @GL_GNULIB_OVERRIDES_STRUCT_STAT@
+GL_GNULIB_PCLOSE = @GL_GNULIB_PCLOSE@
+GL_GNULIB_PERROR = @GL_GNULIB_PERROR@
+GL_GNULIB_PIPE = @GL_GNULIB_PIPE@
+GL_GNULIB_PIPE2 = @GL_GNULIB_PIPE2@
+GL_GNULIB_POPEN = @GL_GNULIB_POPEN@
+GL_GNULIB_POSIX_MEMALIGN = @GL_GNULIB_POSIX_MEMALIGN@
+GL_GNULIB_POSIX_OPENPT = @GL_GNULIB_POSIX_OPENPT@
+GL_GNULIB_PREAD = @GL_GNULIB_PREAD@
+GL_GNULIB_PRINTF = @GL_GNULIB_PRINTF@
+GL_GNULIB_PRINTF_POSIX = @GL_GNULIB_PRINTF_POSIX@
+GL_GNULIB_PSELECT = @GL_GNULIB_PSELECT@
+GL_GNULIB_PTHREAD_COND = @GL_GNULIB_PTHREAD_COND@
+GL_GNULIB_PTHREAD_MUTEX = @GL_GNULIB_PTHREAD_MUTEX@
+GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK = @GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK@
+GL_GNULIB_PTHREAD_ONCE = @GL_GNULIB_PTHREAD_ONCE@
+GL_GNULIB_PTHREAD_RWLOCK = @GL_GNULIB_PTHREAD_RWLOCK@
+GL_GNULIB_PTHREAD_SIGMASK = @GL_GNULIB_PTHREAD_SIGMASK@
+GL_GNULIB_PTHREAD_SPIN = @GL_GNULIB_PTHREAD_SPIN@
+GL_GNULIB_PTHREAD_THREAD = @GL_GNULIB_PTHREAD_THREAD@
+GL_GNULIB_PTHREAD_TSS = @GL_GNULIB_PTHREAD_TSS@
+GL_GNULIB_PTSNAME = @GL_GNULIB_PTSNAME@
+GL_GNULIB_PTSNAME_R = @GL_GNULIB_PTSNAME_R@
+GL_GNULIB_PUTC = @GL_GNULIB_PUTC@
+GL_GNULIB_PUTCHAR = @GL_GNULIB_PUTCHAR@
+GL_GNULIB_PUTENV = @GL_GNULIB_PUTENV@
+GL_GNULIB_PUTS = @GL_GNULIB_PUTS@
+GL_GNULIB_PWRITE = @GL_GNULIB_PWRITE@
+GL_GNULIB_QSORT_R = @GL_GNULIB_QSORT_R@
+GL_GNULIB_RAISE = @GL_GNULIB_RAISE@
+GL_GNULIB_RANDOM = @GL_GNULIB_RANDOM@
+GL_GNULIB_RANDOM_R = @GL_GNULIB_RANDOM_R@
+GL_GNULIB_RAWMEMCHR = @GL_GNULIB_RAWMEMCHR@
+GL_GNULIB_READ = @GL_GNULIB_READ@
+GL_GNULIB_READDIR = @GL_GNULIB_READDIR@
+GL_GNULIB_READLINK = @GL_GNULIB_READLINK@
+GL_GNULIB_READLINKAT = @GL_GNULIB_READLINKAT@
+GL_GNULIB_REALLOCARRAY = @GL_GNULIB_REALLOCARRAY@
+GL_GNULIB_REALLOC_POSIX = @GL_GNULIB_REALLOC_POSIX@
+GL_GNULIB_REALPATH = @GL_GNULIB_REALPATH@
+GL_GNULIB_RECV = @GL_GNULIB_RECV@
+GL_GNULIB_RECVFROM = @GL_GNULIB_RECVFROM@
+GL_GNULIB_REMOVE = @GL_GNULIB_REMOVE@
+GL_GNULIB_RENAME = @GL_GNULIB_RENAME@
+GL_GNULIB_RENAMEAT = @GL_GNULIB_RENAMEAT@
+GL_GNULIB_REWINDDIR = @GL_GNULIB_REWINDDIR@
+GL_GNULIB_RMDIR = @GL_GNULIB_RMDIR@
+GL_GNULIB_RPMATCH = @GL_GNULIB_RPMATCH@
+GL_GNULIB_SCANDIR = @GL_GNULIB_SCANDIR@
+GL_GNULIB_SCANF = @GL_GNULIB_SCANF@
+GL_GNULIB_SCHED_YIELD = @GL_GNULIB_SCHED_YIELD@
+GL_GNULIB_SECURE_GETENV = @GL_GNULIB_SECURE_GETENV@
+GL_GNULIB_SELECT = @GL_GNULIB_SELECT@
+GL_GNULIB_SEND = @GL_GNULIB_SEND@
+GL_GNULIB_SENDTO = @GL_GNULIB_SENDTO@
+GL_GNULIB_SETENV = @GL_GNULIB_SETENV@
+GL_GNULIB_SETHOSTNAME = @GL_GNULIB_SETHOSTNAME@
+GL_GNULIB_SETLOCALE = @GL_GNULIB_SETLOCALE@
+GL_GNULIB_SETLOCALE_NULL = @GL_GNULIB_SETLOCALE_NULL@
+GL_GNULIB_SETSOCKOPT = @GL_GNULIB_SETSOCKOPT@
+GL_GNULIB_SHUTDOWN = @GL_GNULIB_SHUTDOWN@
+GL_GNULIB_SIGABBREV_NP = @GL_GNULIB_SIGABBREV_NP@
+GL_GNULIB_SIGACTION = @GL_GNULIB_SIGACTION@
+GL_GNULIB_SIGDESCR_NP = @GL_GNULIB_SIGDESCR_NP@
+GL_GNULIB_SIGNAL_H_SIGPIPE = @GL_GNULIB_SIGNAL_H_SIGPIPE@
+GL_GNULIB_SIGPROCMASK = @GL_GNULIB_SIGPROCMASK@
+GL_GNULIB_SLEEP = @GL_GNULIB_SLEEP@
+GL_GNULIB_SNPRINTF = @GL_GNULIB_SNPRINTF@
+GL_GNULIB_SOCKET = @GL_GNULIB_SOCKET@
+GL_GNULIB_SPRINTF_POSIX = @GL_GNULIB_SPRINTF_POSIX@
+GL_GNULIB_STAT = @GL_GNULIB_STAT@
+GL_GNULIB_STDIO_H_NONBLOCKING = @GL_GNULIB_STDIO_H_NONBLOCKING@
+GL_GNULIB_STDIO_H_SIGPIPE = @GL_GNULIB_STDIO_H_SIGPIPE@
+GL_GNULIB_STPCPY = @GL_GNULIB_STPCPY@
+GL_GNULIB_STPNCPY = @GL_GNULIB_STPNCPY@
+GL_GNULIB_STRCASESTR = @GL_GNULIB_STRCASESTR@
+GL_GNULIB_STRCHRNUL = @GL_GNULIB_STRCHRNUL@
+GL_GNULIB_STRDUP = @GL_GNULIB_STRDUP@
+GL_GNULIB_STRERROR = @GL_GNULIB_STRERROR@
+GL_GNULIB_STRERRORNAME_NP = @GL_GNULIB_STRERRORNAME_NP@
+GL_GNULIB_STRERROR_R = @GL_GNULIB_STRERROR_R@
+GL_GNULIB_STRFTIME = @GL_GNULIB_STRFTIME@
+GL_GNULIB_STRNCAT = @GL_GNULIB_STRNCAT@
+GL_GNULIB_STRNDUP = @GL_GNULIB_STRNDUP@
+GL_GNULIB_STRNLEN = @GL_GNULIB_STRNLEN@
+GL_GNULIB_STRPBRK = @GL_GNULIB_STRPBRK@
+GL_GNULIB_STRPTIME = @GL_GNULIB_STRPTIME@
+GL_GNULIB_STRSEP = @GL_GNULIB_STRSEP@
+GL_GNULIB_STRSIGNAL = @GL_GNULIB_STRSIGNAL@
+GL_GNULIB_STRSTR = @GL_GNULIB_STRSTR@
+GL_GNULIB_STRTOD = @GL_GNULIB_STRTOD@
+GL_GNULIB_STRTOIMAX = @GL_GNULIB_STRTOIMAX@
+GL_GNULIB_STRTOK_R = @GL_GNULIB_STRTOK_R@
+GL_GNULIB_STRTOL = @GL_GNULIB_STRTOL@
+GL_GNULIB_STRTOLD = @GL_GNULIB_STRTOLD@
+GL_GNULIB_STRTOLL = @GL_GNULIB_STRTOLL@
+GL_GNULIB_STRTOUL = @GL_GNULIB_STRTOUL@
+GL_GNULIB_STRTOULL = @GL_GNULIB_STRTOULL@
+GL_GNULIB_STRTOUMAX = @GL_GNULIB_STRTOUMAX@
+GL_GNULIB_STRVERSCMP = @GL_GNULIB_STRVERSCMP@
+GL_GNULIB_SYMLINK = @GL_GNULIB_SYMLINK@
+GL_GNULIB_SYMLINKAT = @GL_GNULIB_SYMLINKAT@
+GL_GNULIB_SYSTEM_POSIX = @GL_GNULIB_SYSTEM_POSIX@
+GL_GNULIB_TIMEGM = @GL_GNULIB_TIMEGM@
+GL_GNULIB_TIMESPEC_GET = @GL_GNULIB_TIMESPEC_GET@
+GL_GNULIB_TIME_R = @GL_GNULIB_TIME_R@
+GL_GNULIB_TIME_RZ = @GL_GNULIB_TIME_RZ@
+GL_GNULIB_TMPFILE = @GL_GNULIB_TMPFILE@
+GL_GNULIB_TOWCTRANS = @GL_GNULIB_TOWCTRANS@
+GL_GNULIB_TRUNCATE = @GL_GNULIB_TRUNCATE@
+GL_GNULIB_TTYNAME_R = @GL_GNULIB_TTYNAME_R@
+GL_GNULIB_TZSET = @GL_GNULIB_TZSET@
+GL_GNULIB_UNISTD_H_GETOPT = @GL_GNULIB_UNISTD_H_GETOPT@
+GL_GNULIB_UNISTD_H_NONBLOCKING = @GL_GNULIB_UNISTD_H_NONBLOCKING@
+GL_GNULIB_UNISTD_H_SIGPIPE = @GL_GNULIB_UNISTD_H_SIGPIPE@
+GL_GNULIB_UNLINK = @GL_GNULIB_UNLINK@
+GL_GNULIB_UNLINKAT = @GL_GNULIB_UNLINKAT@
+GL_GNULIB_UNLOCKPT = @GL_GNULIB_UNLOCKPT@
+GL_GNULIB_UNSETENV = @GL_GNULIB_UNSETENV@
+GL_GNULIB_USLEEP = @GL_GNULIB_USLEEP@
+GL_GNULIB_UTIMENSAT = @GL_GNULIB_UTIMENSAT@
+GL_GNULIB_VASPRINTF = @GL_GNULIB_VASPRINTF@
+GL_GNULIB_VDPRINTF = @GL_GNULIB_VDPRINTF@
+GL_GNULIB_VFPRINTF = @GL_GNULIB_VFPRINTF@
+GL_GNULIB_VFPRINTF_POSIX = @GL_GNULIB_VFPRINTF_POSIX@
+GL_GNULIB_VFSCANF = @GL_GNULIB_VFSCANF@
+GL_GNULIB_VPRINTF = @GL_GNULIB_VPRINTF@
+GL_GNULIB_VPRINTF_POSIX = @GL_GNULIB_VPRINTF_POSIX@
+GL_GNULIB_VSCANF = @GL_GNULIB_VSCANF@
+GL_GNULIB_VSNPRINTF = @GL_GNULIB_VSNPRINTF@
+GL_GNULIB_VSPRINTF_POSIX = @GL_GNULIB_VSPRINTF_POSIX@
+GL_GNULIB_WCPCPY = @GL_GNULIB_WCPCPY@
+GL_GNULIB_WCPNCPY = @GL_GNULIB_WCPNCPY@
+GL_GNULIB_WCRTOMB = @GL_GNULIB_WCRTOMB@
+GL_GNULIB_WCSCASECMP = @GL_GNULIB_WCSCASECMP@
+GL_GNULIB_WCSCAT = @GL_GNULIB_WCSCAT@
+GL_GNULIB_WCSCHR = @GL_GNULIB_WCSCHR@
+GL_GNULIB_WCSCMP = @GL_GNULIB_WCSCMP@
+GL_GNULIB_WCSCOLL = @GL_GNULIB_WCSCOLL@
+GL_GNULIB_WCSCPY = @GL_GNULIB_WCSCPY@
+GL_GNULIB_WCSCSPN = @GL_GNULIB_WCSCSPN@
+GL_GNULIB_WCSDUP = @GL_GNULIB_WCSDUP@
+GL_GNULIB_WCSFTIME = @GL_GNULIB_WCSFTIME@
+GL_GNULIB_WCSLEN = @GL_GNULIB_WCSLEN@
+GL_GNULIB_WCSNCASECMP = @GL_GNULIB_WCSNCASECMP@
+GL_GNULIB_WCSNCAT = @GL_GNULIB_WCSNCAT@
+GL_GNULIB_WCSNCMP = @GL_GNULIB_WCSNCMP@
+GL_GNULIB_WCSNCPY = @GL_GNULIB_WCSNCPY@
+GL_GNULIB_WCSNLEN = @GL_GNULIB_WCSNLEN@
+GL_GNULIB_WCSNRTOMBS = @GL_GNULIB_WCSNRTOMBS@
+GL_GNULIB_WCSPBRK = @GL_GNULIB_WCSPBRK@
+GL_GNULIB_WCSRCHR = @GL_GNULIB_WCSRCHR@
+GL_GNULIB_WCSRTOMBS = @GL_GNULIB_WCSRTOMBS@
+GL_GNULIB_WCSSPN = @GL_GNULIB_WCSSPN@
+GL_GNULIB_WCSSTR = @GL_GNULIB_WCSSTR@
+GL_GNULIB_WCSTOK = @GL_GNULIB_WCSTOK@
+GL_GNULIB_WCSWIDTH = @GL_GNULIB_WCSWIDTH@
+GL_GNULIB_WCSXFRM = @GL_GNULIB_WCSXFRM@
+GL_GNULIB_WCTOB = @GL_GNULIB_WCTOB@
+GL_GNULIB_WCTOMB = @GL_GNULIB_WCTOMB@
+GL_GNULIB_WCTRANS = @GL_GNULIB_WCTRANS@
+GL_GNULIB_WCTYPE = @GL_GNULIB_WCTYPE@
+GL_GNULIB_WCWIDTH = @GL_GNULIB_WCWIDTH@
+GL_GNULIB_WMEMCHR = @GL_GNULIB_WMEMCHR@
+GL_GNULIB_WMEMCMP = @GL_GNULIB_WMEMCMP@
+GL_GNULIB_WMEMCPY = @GL_GNULIB_WMEMCPY@
+GL_GNULIB_WMEMMOVE = @GL_GNULIB_WMEMMOVE@
+GL_GNULIB_WMEMPCPY = @GL_GNULIB_WMEMPCPY@
+GL_GNULIB_WMEMSET = @GL_GNULIB_WMEMSET@
+GL_GNULIB_WRITE = @GL_GNULIB_WRITE@
+GL_GNULIB__EXIT = @GL_GNULIB__EXIT@
+GMSGFMT = @GMSGFMT@
+GMSGFMT_015 = @GMSGFMT_015@
+GNULIBHEADERS_OVERRIDE_WINT_T = @GNULIBHEADERS_OVERRIDE_WINT_T@
+GNULIB_GETTIMEOFDAY = @GNULIB_GETTIMEOFDAY@
+GNULIB_TEST_WARN_CFLAGS = @GNULIB_TEST_WARN_CFLAGS@
+GNULIB_WARN_CFLAGS = @GNULIB_WARN_CFLAGS@
+GREP = @GREP@
+HAVE_ACCEPT4 = @HAVE_ACCEPT4@
+HAVE_ALIGNED_ALLOC = @HAVE_ALIGNED_ALLOC@
+HAVE_ALLOCA_H = @HAVE_ALLOCA_H@
+HAVE_ALPHASORT = @HAVE_ALPHASORT@
+HAVE_ARPA_INET_H = @HAVE_ARPA_INET_H@
+HAVE_ATOLL = @HAVE_ATOLL@
+HAVE_BTOWC = @HAVE_BTOWC@
+HAVE_C99_STDINT_H = @HAVE_C99_STDINT_H@
+HAVE_CANONICALIZE_FILE_NAME = @HAVE_CANONICALIZE_FILE_NAME@
+HAVE_CHOWN = @HAVE_CHOWN@
+HAVE_CLOSEDIR = @HAVE_CLOSEDIR@
+HAVE_COPY_FILE_RANGE = @HAVE_COPY_FILE_RANGE@
+HAVE_CRTDEFS_H = @HAVE_CRTDEFS_H@
+HAVE_DECL_DIRFD = @HAVE_DECL_DIRFD@
+HAVE_DECL_ECVT = @HAVE_DECL_ECVT@
+HAVE_DECL_ENVIRON = @HAVE_DECL_ENVIRON@
+HAVE_DECL_EXECVPE = @HAVE_DECL_EXECVPE@
+HAVE_DECL_FCHDIR = @HAVE_DECL_FCHDIR@
+HAVE_DECL_FCLOSEALL = @HAVE_DECL_FCLOSEALL@
+HAVE_DECL_FCVT = @HAVE_DECL_FCVT@
+HAVE_DECL_FDATASYNC = @HAVE_DECL_FDATASYNC@
+HAVE_DECL_FDOPENDIR = @HAVE_DECL_FDOPENDIR@
+HAVE_DECL_FPURGE = @HAVE_DECL_FPURGE@
+HAVE_DECL_FSEEKO = @HAVE_DECL_FSEEKO@
+HAVE_DECL_FTELLO = @HAVE_DECL_FTELLO@
+HAVE_DECL_GCVT = @HAVE_DECL_GCVT@
+HAVE_DECL_GETDELIM = @HAVE_DECL_GETDELIM@
+HAVE_DECL_GETDOMAINNAME = @HAVE_DECL_GETDOMAINNAME@
+HAVE_DECL_GETLINE = @HAVE_DECL_GETLINE@
+HAVE_DECL_GETLOADAVG = @HAVE_DECL_GETLOADAVG@
+HAVE_DECL_GETLOGIN = @HAVE_DECL_GETLOGIN@
+HAVE_DECL_GETLOGIN_R = @HAVE_DECL_GETLOGIN_R@
+HAVE_DECL_GETPAGESIZE = @HAVE_DECL_GETPAGESIZE@
+HAVE_DECL_GETUSERSHELL = @HAVE_DECL_GETUSERSHELL@
+HAVE_DECL_IMAXABS = @HAVE_DECL_IMAXABS@
+HAVE_DECL_IMAXDIV = @HAVE_DECL_IMAXDIV@
+HAVE_DECL_INET_NTOP = @HAVE_DECL_INET_NTOP@
+HAVE_DECL_INET_PTON = @HAVE_DECL_INET_PTON@
+HAVE_DECL_INITSTATE = @HAVE_DECL_INITSTATE@
+HAVE_DECL_LOCALTIME_R = @HAVE_DECL_LOCALTIME_R@
+HAVE_DECL_MEMMEM = @HAVE_DECL_MEMMEM@
+HAVE_DECL_MEMRCHR = @HAVE_DECL_MEMRCHR@
+HAVE_DECL_OBSTACK_PRINTF = @HAVE_DECL_OBSTACK_PRINTF@
+HAVE_DECL_SETENV = @HAVE_DECL_SETENV@
+HAVE_DECL_SETHOSTNAME = @HAVE_DECL_SETHOSTNAME@
+HAVE_DECL_SETSTATE = @HAVE_DECL_SETSTATE@
+HAVE_DECL_SNPRINTF = @HAVE_DECL_SNPRINTF@
+HAVE_DECL_STRDUP = @HAVE_DECL_STRDUP@
+HAVE_DECL_STRERROR_R = @HAVE_DECL_STRERROR_R@
+HAVE_DECL_STRNDUP = @HAVE_DECL_STRNDUP@
+HAVE_DECL_STRNLEN = @HAVE_DECL_STRNLEN@
+HAVE_DECL_STRSIGNAL = @HAVE_DECL_STRSIGNAL@
+HAVE_DECL_STRTOIMAX = @HAVE_DECL_STRTOIMAX@
+HAVE_DECL_STRTOK_R = @HAVE_DECL_STRTOK_R@
+HAVE_DECL_STRTOUMAX = @HAVE_DECL_STRTOUMAX@
+HAVE_DECL_TRUNCATE = @HAVE_DECL_TRUNCATE@
+HAVE_DECL_TTYNAME_R = @HAVE_DECL_TTYNAME_R@
+HAVE_DECL_UNSETENV = @HAVE_DECL_UNSETENV@
+HAVE_DECL_VSNPRINTF = @HAVE_DECL_VSNPRINTF@
+HAVE_DECL_WCSDUP = @HAVE_DECL_WCSDUP@
+HAVE_DECL_WCTOB = @HAVE_DECL_WCTOB@
+HAVE_DECL_WCWIDTH = @HAVE_DECL_WCWIDTH@
+HAVE_DIRENT_H = @HAVE_DIRENT_H@
+HAVE_DPRINTF = @HAVE_DPRINTF@
+HAVE_DUP3 = @HAVE_DUP3@
+HAVE_DUPLOCALE = @HAVE_DUPLOCALE@
+HAVE_EUIDACCESS = @HAVE_EUIDACCESS@
+HAVE_EXECVPE = @HAVE_EXECVPE@
+HAVE_EXPLICIT_BZERO = @HAVE_EXPLICIT_BZERO@
+HAVE_FACCESSAT = @HAVE_FACCESSAT@
+HAVE_FCHDIR = @HAVE_FCHDIR@
+HAVE_FCHMODAT = @HAVE_FCHMODAT@
+HAVE_FCHOWNAT = @HAVE_FCHOWNAT@
+HAVE_FCNTL = @HAVE_FCNTL@
+HAVE_FDATASYNC = @HAVE_FDATASYNC@
+HAVE_FDOPENDIR = @HAVE_FDOPENDIR@
+HAVE_FEATURES_H = @HAVE_FEATURES_H@
+HAVE_FFSL = @HAVE_FFSL@
+HAVE_FFSLL = @HAVE_FFSLL@
+HAVE_FNMATCH = @HAVE_FNMATCH@
+HAVE_FNMATCH_H = @HAVE_FNMATCH_H@
+HAVE_FREELOCALE = @HAVE_FREELOCALE@
+HAVE_FSEEKO = @HAVE_FSEEKO@
+HAVE_FSTATAT = @HAVE_FSTATAT@
+HAVE_FSYNC = @HAVE_FSYNC@
+HAVE_FTELLO = @HAVE_FTELLO@
+HAVE_FTRUNCATE = @HAVE_FTRUNCATE@
+HAVE_FUTIMENS = @HAVE_FUTIMENS@
+HAVE_GETDTABLESIZE = @HAVE_GETDTABLESIZE@
+HAVE_GETENTROPY = @HAVE_GETENTROPY@
+HAVE_GETGROUPS = @HAVE_GETGROUPS@
+HAVE_GETHOSTNAME = @HAVE_GETHOSTNAME@
+HAVE_GETLOGIN = @HAVE_GETLOGIN@
+HAVE_GETOPT_H = @HAVE_GETOPT_H@
+HAVE_GETPAGESIZE = @HAVE_GETPAGESIZE@
+HAVE_GETPASS = @HAVE_GETPASS@
+HAVE_GETSUBOPT = @HAVE_GETSUBOPT@
+HAVE_GETTIMEOFDAY = @HAVE_GETTIMEOFDAY@
+HAVE_GETUMASK = @HAVE_GETUMASK@
+HAVE_GRANTPT = @HAVE_GRANTPT@
+HAVE_GROUP_MEMBER = @HAVE_GROUP_MEMBER@
+HAVE_IMAXDIV_T = @HAVE_IMAXDIV_T@
+HAVE_INITSTATE = @HAVE_INITSTATE@
+HAVE_INTTYPES_H = @HAVE_INTTYPES_H@
+HAVE_ISBLANK = @HAVE_ISBLANK@
+HAVE_ISWBLANK = @HAVE_ISWBLANK@
+HAVE_ISWCNTRL = @HAVE_ISWCNTRL@
+HAVE_LANGINFO_ALTMON = @HAVE_LANGINFO_ALTMON@
+HAVE_LANGINFO_CODESET = @HAVE_LANGINFO_CODESET@
+HAVE_LANGINFO_ERA = @HAVE_LANGINFO_ERA@
+HAVE_LANGINFO_H = @HAVE_LANGINFO_H@
+HAVE_LANGINFO_T_FMT_AMPM = @HAVE_LANGINFO_T_FMT_AMPM@
+HAVE_LANGINFO_YESEXPR = @HAVE_LANGINFO_YESEXPR@
+HAVE_LCHMOD = @HAVE_LCHMOD@
+HAVE_LCHOWN = @HAVE_LCHOWN@
+HAVE_LIBSIGSEGV = @HAVE_LIBSIGSEGV@
+HAVE_LINK = @HAVE_LINK@
+HAVE_LINKAT = @HAVE_LINKAT@
+HAVE_LSTAT = @HAVE_LSTAT@
+HAVE_MAX_ALIGN_T = @HAVE_MAX_ALIGN_T@
+HAVE_MBRLEN = @HAVE_MBRLEN@
+HAVE_MBRTOWC = @HAVE_MBRTOWC@
+HAVE_MBSINIT = @HAVE_MBSINIT@
+HAVE_MBSLEN = @HAVE_MBSLEN@
+HAVE_MBSNRTOWCS = @HAVE_MBSNRTOWCS@
+HAVE_MBSRTOWCS = @HAVE_MBSRTOWCS@
+HAVE_MBTOWC = @HAVE_MBTOWC@
+HAVE_MEMPCPY = @HAVE_MEMPCPY@
+HAVE_MKDIRAT = @HAVE_MKDIRAT@
+HAVE_MKDTEMP = @HAVE_MKDTEMP@
+HAVE_MKFIFO = @HAVE_MKFIFO@
+HAVE_MKFIFOAT = @HAVE_MKFIFOAT@
+HAVE_MKNOD = @HAVE_MKNOD@
+HAVE_MKNODAT = @HAVE_MKNODAT@
+HAVE_MKOSTEMP = @HAVE_MKOSTEMP@
+HAVE_MKOSTEMPS = @HAVE_MKOSTEMPS@
+HAVE_MKSTEMP = @HAVE_MKSTEMP@
+HAVE_MKSTEMPS = @HAVE_MKSTEMPS@
+HAVE_MSVC_INVALID_PARAMETER_HANDLER = @HAVE_MSVC_INVALID_PARAMETER_HANDLER@
+HAVE_NANOSLEEP = @HAVE_NANOSLEEP@
+HAVE_NETINET_IN_H = @HAVE_NETINET_IN_H@
+HAVE_NEWLOCALE = @HAVE_NEWLOCALE@
+HAVE_NL_LANGINFO = @HAVE_NL_LANGINFO@
+HAVE_OPENAT = @HAVE_OPENAT@
+HAVE_OPENDIR = @HAVE_OPENDIR@
+HAVE_OS_H = @HAVE_OS_H@
+HAVE_PCLOSE = @HAVE_PCLOSE@
+HAVE_PIPE = @HAVE_PIPE@
+HAVE_PIPE2 = @HAVE_PIPE2@
+HAVE_POPEN = @HAVE_POPEN@
+HAVE_POSIX_MEMALIGN = @HAVE_POSIX_MEMALIGN@
+HAVE_POSIX_OPENPT = @HAVE_POSIX_OPENPT@
+HAVE_POSIX_SIGNALBLOCKING = @HAVE_POSIX_SIGNALBLOCKING@
+HAVE_PREAD = @HAVE_PREAD@
+HAVE_PSELECT = @HAVE_PSELECT@
+HAVE_PTHREAD_ATTR_DESTROY = @HAVE_PTHREAD_ATTR_DESTROY@
+HAVE_PTHREAD_ATTR_GETDETACHSTATE = @HAVE_PTHREAD_ATTR_GETDETACHSTATE@
+HAVE_PTHREAD_ATTR_INIT = @HAVE_PTHREAD_ATTR_INIT@
+HAVE_PTHREAD_ATTR_SETDETACHSTATE = @HAVE_PTHREAD_ATTR_SETDETACHSTATE@
+HAVE_PTHREAD_CONDATTR_DESTROY = @HAVE_PTHREAD_CONDATTR_DESTROY@
+HAVE_PTHREAD_CONDATTR_INIT = @HAVE_PTHREAD_CONDATTR_INIT@
+HAVE_PTHREAD_COND_BROADCAST = @HAVE_PTHREAD_COND_BROADCAST@
+HAVE_PTHREAD_COND_DESTROY = @HAVE_PTHREAD_COND_DESTROY@
+HAVE_PTHREAD_COND_INIT = @HAVE_PTHREAD_COND_INIT@
+HAVE_PTHREAD_COND_SIGNAL = @HAVE_PTHREAD_COND_SIGNAL@
+HAVE_PTHREAD_COND_TIMEDWAIT = @HAVE_PTHREAD_COND_TIMEDWAIT@
+HAVE_PTHREAD_COND_WAIT = @HAVE_PTHREAD_COND_WAIT@
+HAVE_PTHREAD_CREATE = @HAVE_PTHREAD_CREATE@
+HAVE_PTHREAD_CREATE_DETACHED = @HAVE_PTHREAD_CREATE_DETACHED@
+HAVE_PTHREAD_DETACH = @HAVE_PTHREAD_DETACH@
+HAVE_PTHREAD_EQUAL = @HAVE_PTHREAD_EQUAL@
+HAVE_PTHREAD_EXIT = @HAVE_PTHREAD_EXIT@
+HAVE_PTHREAD_GETSPECIFIC = @HAVE_PTHREAD_GETSPECIFIC@
+HAVE_PTHREAD_H = @HAVE_PTHREAD_H@
+HAVE_PTHREAD_JOIN = @HAVE_PTHREAD_JOIN@
+HAVE_PTHREAD_KEY_CREATE = @HAVE_PTHREAD_KEY_CREATE@
+HAVE_PTHREAD_KEY_DELETE = @HAVE_PTHREAD_KEY_DELETE@
+HAVE_PTHREAD_MUTEXATTR_DESTROY = @HAVE_PTHREAD_MUTEXATTR_DESTROY@
+HAVE_PTHREAD_MUTEXATTR_GETROBUST = @HAVE_PTHREAD_MUTEXATTR_GETROBUST@
+HAVE_PTHREAD_MUTEXATTR_GETTYPE = @HAVE_PTHREAD_MUTEXATTR_GETTYPE@
+HAVE_PTHREAD_MUTEXATTR_INIT = @HAVE_PTHREAD_MUTEXATTR_INIT@
+HAVE_PTHREAD_MUTEXATTR_SETROBUST = @HAVE_PTHREAD_MUTEXATTR_SETROBUST@
+HAVE_PTHREAD_MUTEXATTR_SETTYPE = @HAVE_PTHREAD_MUTEXATTR_SETTYPE@
+HAVE_PTHREAD_MUTEX_DESTROY = @HAVE_PTHREAD_MUTEX_DESTROY@
+HAVE_PTHREAD_MUTEX_INIT = @HAVE_PTHREAD_MUTEX_INIT@
+HAVE_PTHREAD_MUTEX_LOCK = @HAVE_PTHREAD_MUTEX_LOCK@
+HAVE_PTHREAD_MUTEX_RECURSIVE = @HAVE_PTHREAD_MUTEX_RECURSIVE@
+HAVE_PTHREAD_MUTEX_ROBUST = @HAVE_PTHREAD_MUTEX_ROBUST@
+HAVE_PTHREAD_MUTEX_TIMEDLOCK = @HAVE_PTHREAD_MUTEX_TIMEDLOCK@
+HAVE_PTHREAD_MUTEX_TRYLOCK = @HAVE_PTHREAD_MUTEX_TRYLOCK@
+HAVE_PTHREAD_MUTEX_UNLOCK = @HAVE_PTHREAD_MUTEX_UNLOCK@
+HAVE_PTHREAD_ONCE = @HAVE_PTHREAD_ONCE@
+HAVE_PTHREAD_PROCESS_SHARED = @HAVE_PTHREAD_PROCESS_SHARED@
+HAVE_PTHREAD_RWLOCKATTR_DESTROY = @HAVE_PTHREAD_RWLOCKATTR_DESTROY@
+HAVE_PTHREAD_RWLOCKATTR_INIT = @HAVE_PTHREAD_RWLOCKATTR_INIT@
+HAVE_PTHREAD_RWLOCK_DESTROY = @HAVE_PTHREAD_RWLOCK_DESTROY@
+HAVE_PTHREAD_RWLOCK_INIT = @HAVE_PTHREAD_RWLOCK_INIT@
+HAVE_PTHREAD_RWLOCK_RDLOCK = @HAVE_PTHREAD_RWLOCK_RDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+HAVE_PTHREAD_RWLOCK_TRYRDLOCK = @HAVE_PTHREAD_RWLOCK_TRYRDLOCK@
+HAVE_PTHREAD_RWLOCK_TRYWRLOCK = @HAVE_PTHREAD_RWLOCK_TRYWRLOCK@
+HAVE_PTHREAD_RWLOCK_UNLOCK = @HAVE_PTHREAD_RWLOCK_UNLOCK@
+HAVE_PTHREAD_RWLOCK_WRLOCK = @HAVE_PTHREAD_RWLOCK_WRLOCK@
+HAVE_PTHREAD_SELF = @HAVE_PTHREAD_SELF@
+HAVE_PTHREAD_SETSPECIFIC = @HAVE_PTHREAD_SETSPECIFIC@
+HAVE_PTHREAD_SIGMASK = @HAVE_PTHREAD_SIGMASK@
+HAVE_PTHREAD_SPINLOCK_T = @HAVE_PTHREAD_SPINLOCK_T@
+HAVE_PTHREAD_SPIN_DESTROY = @HAVE_PTHREAD_SPIN_DESTROY@
+HAVE_PTHREAD_SPIN_INIT = @HAVE_PTHREAD_SPIN_INIT@
+HAVE_PTHREAD_SPIN_LOCK = @HAVE_PTHREAD_SPIN_LOCK@
+HAVE_PTHREAD_SPIN_TRYLOCK = @HAVE_PTHREAD_SPIN_TRYLOCK@
+HAVE_PTHREAD_SPIN_UNLOCK = @HAVE_PTHREAD_SPIN_UNLOCK@
+HAVE_PTHREAD_T = @HAVE_PTHREAD_T@
+HAVE_PTSNAME = @HAVE_PTSNAME@
+HAVE_PTSNAME_R = @HAVE_PTSNAME_R@
+HAVE_PWRITE = @HAVE_PWRITE@
+HAVE_QSORT_R = @HAVE_QSORT_R@
+HAVE_RAISE = @HAVE_RAISE@
+HAVE_RANDOM = @HAVE_RANDOM@
+HAVE_RANDOM_H = @HAVE_RANDOM_H@
+HAVE_RANDOM_R = @HAVE_RANDOM_R@
+HAVE_RAWMEMCHR = @HAVE_RAWMEMCHR@
+HAVE_READDIR = @HAVE_READDIR@
+HAVE_READLINK = @HAVE_READLINK@
+HAVE_READLINKAT = @HAVE_READLINKAT@
+HAVE_REALLOCARRAY = @HAVE_REALLOCARRAY@
+HAVE_REALPATH = @HAVE_REALPATH@
+HAVE_RENAMEAT = @HAVE_RENAMEAT@
+HAVE_REWINDDIR = @HAVE_REWINDDIR@
+HAVE_RPMATCH = @HAVE_RPMATCH@
+HAVE_SA_FAMILY_T = @HAVE_SA_FAMILY_T@
+HAVE_SCANDIR = @HAVE_SCANDIR@
+HAVE_SCHED_H = @HAVE_SCHED_H@
+HAVE_SCHED_YIELD = @HAVE_SCHED_YIELD@
+HAVE_SECURE_GETENV = @HAVE_SECURE_GETENV@
+HAVE_SETENV = @HAVE_SETENV@
+HAVE_SETHOSTNAME = @HAVE_SETHOSTNAME@
+HAVE_SETSTATE = @HAVE_SETSTATE@
+HAVE_SIGABBREV_NP = @HAVE_SIGABBREV_NP@
+HAVE_SIGACTION = @HAVE_SIGACTION@
+HAVE_SIGDESCR_NP = @HAVE_SIGDESCR_NP@
+HAVE_SIGHANDLER_T = @HAVE_SIGHANDLER_T@
+HAVE_SIGINFO_T = @HAVE_SIGINFO_T@
+HAVE_SIGNED_SIG_ATOMIC_T = @HAVE_SIGNED_SIG_ATOMIC_T@
+HAVE_SIGNED_WCHAR_T = @HAVE_SIGNED_WCHAR_T@
+HAVE_SIGNED_WINT_T = @HAVE_SIGNED_WINT_T@
+HAVE_SIGSET_T = @HAVE_SIGSET_T@
+HAVE_SLEEP = @HAVE_SLEEP@
+HAVE_STDINT_H = @HAVE_STDINT_H@
+HAVE_STPCPY = @HAVE_STPCPY@
+HAVE_STPNCPY = @HAVE_STPNCPY@
+HAVE_STRCASESTR = @HAVE_STRCASESTR@
+HAVE_STRCHRNUL = @HAVE_STRCHRNUL@
+HAVE_STRERRORNAME_NP = @HAVE_STRERRORNAME_NP@
+HAVE_STRPBRK = @HAVE_STRPBRK@
+HAVE_STRPTIME = @HAVE_STRPTIME@
+HAVE_STRSEP = @HAVE_STRSEP@
+HAVE_STRTOD = @HAVE_STRTOD@
+HAVE_STRTOL = @HAVE_STRTOL@
+HAVE_STRTOLD = @HAVE_STRTOLD@
+HAVE_STRTOLL = @HAVE_STRTOLL@
+HAVE_STRTOUL = @HAVE_STRTOUL@
+HAVE_STRTOULL = @HAVE_STRTOULL@
+HAVE_STRUCT_RANDOM_DATA = @HAVE_STRUCT_RANDOM_DATA@
+HAVE_STRUCT_SCHED_PARAM = @HAVE_STRUCT_SCHED_PARAM@
+HAVE_STRUCT_SIGACTION_SA_SIGACTION = @HAVE_STRUCT_SIGACTION_SA_SIGACTION@
+HAVE_STRUCT_SOCKADDR_STORAGE = @HAVE_STRUCT_SOCKADDR_STORAGE@
+HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = @HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY@
+HAVE_STRUCT_TIMEVAL = @HAVE_STRUCT_TIMEVAL@
+HAVE_STRVERSCMP = @HAVE_STRVERSCMP@
+HAVE_SYMLINK = @HAVE_SYMLINK@
+HAVE_SYMLINKAT = @HAVE_SYMLINKAT@
+HAVE_SYS_BITYPES_H = @HAVE_SYS_BITYPES_H@
+HAVE_SYS_CDEFS_H = @HAVE_SYS_CDEFS_H@
+HAVE_SYS_INTTYPES_H = @HAVE_SYS_INTTYPES_H@
+HAVE_SYS_IOCTL_H = @HAVE_SYS_IOCTL_H@
+HAVE_SYS_LOADAVG_H = @HAVE_SYS_LOADAVG_H@
+HAVE_SYS_PARAM_H = @HAVE_SYS_PARAM_H@
+HAVE_SYS_SELECT_H = @HAVE_SYS_SELECT_H@
+HAVE_SYS_SOCKET_H = @HAVE_SYS_SOCKET_H@
+HAVE_SYS_TIME_H = @HAVE_SYS_TIME_H@
+HAVE_SYS_TYPES_H = @HAVE_SYS_TYPES_H@
+HAVE_SYS_UIO_H = @HAVE_SYS_UIO_H@
+HAVE_TIMEGM = @HAVE_TIMEGM@
+HAVE_TIMESPEC_GET = @HAVE_TIMESPEC_GET@
+HAVE_TIMEZONE_T = @HAVE_TIMEZONE_T@
+HAVE_TYPE_VOLATILE_SIG_ATOMIC_T = @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
+HAVE_UNISTD_H = @HAVE_UNISTD_H@
+HAVE_UNLINKAT = @HAVE_UNLINKAT@
+HAVE_UNLOCKPT = @HAVE_UNLOCKPT@
+HAVE_USLEEP = @HAVE_USLEEP@
+HAVE_UTIMENSAT = @HAVE_UTIMENSAT@
+HAVE_VASPRINTF = @HAVE_VASPRINTF@
+HAVE_VDPRINTF = @HAVE_VDPRINTF@
+HAVE_VISIBILITY = @HAVE_VISIBILITY@
+HAVE_WCHAR_H = @HAVE_WCHAR_H@
+HAVE_WCHAR_T = @HAVE_WCHAR_T@
+HAVE_WCPCPY = @HAVE_WCPCPY@
+HAVE_WCPNCPY = @HAVE_WCPNCPY@
+HAVE_WCRTOMB = @HAVE_WCRTOMB@
+HAVE_WCSCASECMP = @HAVE_WCSCASECMP@
+HAVE_WCSCAT = @HAVE_WCSCAT@
+HAVE_WCSCHR = @HAVE_WCSCHR@
+HAVE_WCSCMP = @HAVE_WCSCMP@
+HAVE_WCSCOLL = @HAVE_WCSCOLL@
+HAVE_WCSCPY = @HAVE_WCSCPY@
+HAVE_WCSCSPN = @HAVE_WCSCSPN@
+HAVE_WCSDUP = @HAVE_WCSDUP@
+HAVE_WCSFTIME = @HAVE_WCSFTIME@
+HAVE_WCSLEN = @HAVE_WCSLEN@
+HAVE_WCSNCASECMP = @HAVE_WCSNCASECMP@
+HAVE_WCSNCAT = @HAVE_WCSNCAT@
+HAVE_WCSNCMP = @HAVE_WCSNCMP@
+HAVE_WCSNCPY = @HAVE_WCSNCPY@
+HAVE_WCSNLEN = @HAVE_WCSNLEN@
+HAVE_WCSNRTOMBS = @HAVE_WCSNRTOMBS@
+HAVE_WCSPBRK = @HAVE_WCSPBRK@
+HAVE_WCSRCHR = @HAVE_WCSRCHR@
+HAVE_WCSRTOMBS = @HAVE_WCSRTOMBS@
+HAVE_WCSSPN = @HAVE_WCSSPN@
+HAVE_WCSSTR = @HAVE_WCSSTR@
+HAVE_WCSTOK = @HAVE_WCSTOK@
+HAVE_WCSWIDTH = @HAVE_WCSWIDTH@
+HAVE_WCSXFRM = @HAVE_WCSXFRM@
+HAVE_WCTRANS_T = @HAVE_WCTRANS_T@
+HAVE_WCTYPE_H = @HAVE_WCTYPE_H@
+HAVE_WCTYPE_T = @HAVE_WCTYPE_T@
+HAVE_WINSOCK2_H = @HAVE_WINSOCK2_H@
+HAVE_WINT_T = @HAVE_WINT_T@
+HAVE_WMEMCHR = @HAVE_WMEMCHR@
+HAVE_WMEMCMP = @HAVE_WMEMCMP@
+HAVE_WMEMCPY = @HAVE_WMEMCPY@
+HAVE_WMEMMOVE = @HAVE_WMEMMOVE@
+HAVE_WMEMPCPY = @HAVE_WMEMPCPY@
+HAVE_WMEMSET = @HAVE_WMEMSET@
+HAVE_WS2TCPIP_H = @HAVE_WS2TCPIP_H@
+HAVE_XLOCALE_H = @HAVE_XLOCALE_H@
+HAVE__BOOL = @HAVE__BOOL@
+HAVE__EXIT = @HAVE__EXIT@
+HOST_CPU = @HOST_CPU@
+HOST_CPU_C_ABI = @HOST_CPU_C_ABI@
+ICONV_CONST = @ICONV_CONST@
+ICONV_H = @ICONV_H@
+INCLUDE_NEXT = @INCLUDE_NEXT@
+INCLUDE_NEXT_AS_FIRST_DIRECTIVE = @INCLUDE_NEXT_AS_FIRST_DIRECTIVE@
+INET_PTON_LIB = @INET_PTON_LIB@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INT32_MAX_LT_INTMAX_MAX = @INT32_MAX_LT_INTMAX_MAX@
+INT64_MAX_EQ_LONG_MAX = @INT64_MAX_EQ_LONG_MAX@
+INTLLIBS = @INTLLIBS@
+INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
+LDFLAGS = @LDFLAGS@
+LIBCSTACK = @LIBCSTACK@
+LIBGREPUTILS_LIBDEPS = @LIBGREPUTILS_LIBDEPS@
+LIBGREPUTILS_LTLIBDEPS = @LIBGREPUTILS_LTLIBDEPS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBMULTITHREAD = @LIBMULTITHREAD@
+LIBOBJS = @LIBOBJS@
+LIBPMULTITHREAD = @LIBPMULTITHREAD@
+LIBPTHREAD = @LIBPTHREAD@
+LIBS = @LIBS@
+LIBSIGSEGV = @LIBSIGSEGV@
+LIBSIGSEGV_PREFIX = @LIBSIGSEGV_PREFIX@
+LIBSOCKET = @LIBSOCKET@
+LIBSTDTHREAD = @LIBSTDTHREAD@
+LIBTESTS_LIBDEPS = @LIBTESTS_LIBDEPS@
+LIBTHREAD = @LIBTHREAD@
+LIBUNISTRING_UNISTR_H = @LIBUNISTRING_UNISTR_H@
+LIBUNISTRING_UNITYPES_H = @LIBUNISTRING_UNITYPES_H@
+LIBUNISTRING_UNIWIDTH_H = @LIBUNISTRING_UNIWIDTH_H@
+LIB_HARD_LOCALE = @LIB_HARD_LOCALE@
+LIB_MBRTOWC = @LIB_MBRTOWC@
+LIB_NANOSLEEP = @LIB_NANOSLEEP@
+LIB_NL_LANGINFO = @LIB_NL_LANGINFO@
+LIB_PTHREAD = @LIB_PTHREAD@
+LIB_PTHREAD_SIGMASK = @LIB_PTHREAD_SIGMASK@
+LIB_SCHED_YIELD = @LIB_SCHED_YIELD@
+LIB_SELECT = @LIB_SELECT@
+LIB_SETLOCALE = @LIB_SETLOCALE@
+LIB_SETLOCALE_NULL = @LIB_SETLOCALE_NULL@
+LIMITS_H = @LIMITS_H@
+LOCALCHARSET_TESTS_ENVIRONMENT = @LOCALCHARSET_TESTS_ENVIRONMENT@
+LOCALENAME_ENHANCE_LOCALE_FUNCS = @LOCALENAME_ENHANCE_LOCALE_FUNCS@
+LOCALE_FR = @LOCALE_FR@
+LOCALE_FR_UTF8 = @LOCALE_FR_UTF8@
+LOCALE_JA = @LOCALE_JA@
+LOCALE_TR_UTF8 = @LOCALE_TR_UTF8@
+LOCALE_ZH_CN = @LOCALE_ZH_CN@
+LTLIBCSTACK = @LTLIBCSTACK@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBMULTITHREAD = @LTLIBMULTITHREAD@
+LTLIBOBJS = @LTLIBOBJS@
+LTLIBSIGSEGV = @LTLIBSIGSEGV@
+LTLIBTHREAD = @LTLIBTHREAD@
+MAKEINFO = @MAKEINFO@
+MKDIR_P = @MKDIR_P@
+MSGFMT = @MSGFMT@
+MSGFMT_015 = @MSGFMT_015@
+MSGMERGE = @MSGMERGE@
+NETINET_IN_H = @NETINET_IN_H@
+NEXT_ARPA_INET_H = @NEXT_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H = @NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_CTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_CTYPE_H@
+NEXT_AS_FIRST_DIRECTIVE_DIRENT_H = @NEXT_AS_FIRST_DIRECTIVE_DIRENT_H@
+NEXT_AS_FIRST_DIRECTIVE_ERRNO_H = @NEXT_AS_FIRST_DIRECTIVE_ERRNO_H@
+NEXT_AS_FIRST_DIRECTIVE_FCNTL_H = @NEXT_AS_FIRST_DIRECTIVE_FCNTL_H@
+NEXT_AS_FIRST_DIRECTIVE_FLOAT_H = @NEXT_AS_FIRST_DIRECTIVE_FLOAT_H@
+NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H = @NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H@
+NEXT_AS_FIRST_DIRECTIVE_GETOPT_H = @NEXT_AS_FIRST_DIRECTIVE_GETOPT_H@
+NEXT_AS_FIRST_DIRECTIVE_ICONV_H = @NEXT_AS_FIRST_DIRECTIVE_ICONV_H@
+NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H = @NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H = @NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H@
+NEXT_AS_FIRST_DIRECTIVE_LIMITS_H = @NEXT_AS_FIRST_DIRECTIVE_LIMITS_H@
+NEXT_AS_FIRST_DIRECTIVE_LOCALE_H = @NEXT_AS_FIRST_DIRECTIVE_LOCALE_H@
+NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H = @NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H@
+NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H = @NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H@
+NEXT_AS_FIRST_DIRECTIVE_SCHED_H = @NEXT_AS_FIRST_DIRECTIVE_SCHED_H@
+NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H = @NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H@
+NEXT_AS_FIRST_DIRECTIVE_STDARG_H = @NEXT_AS_FIRST_DIRECTIVE_STDARG_H@
+NEXT_AS_FIRST_DIRECTIVE_STDDEF_H = @NEXT_AS_FIRST_DIRECTIVE_STDDEF_H@
+NEXT_AS_FIRST_DIRECTIVE_STDINT_H = @NEXT_AS_FIRST_DIRECTIVE_STDINT_H@
+NEXT_AS_FIRST_DIRECTIVE_STDIO_H = @NEXT_AS_FIRST_DIRECTIVE_STDIO_H@
+NEXT_AS_FIRST_DIRECTIVE_STDLIB_H = @NEXT_AS_FIRST_DIRECTIVE_STDLIB_H@
+NEXT_AS_FIRST_DIRECTIVE_STRING_H = @NEXT_AS_FIRST_DIRECTIVE_STRING_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H@
+NEXT_AS_FIRST_DIRECTIVE_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_UNISTD_H = @NEXT_AS_FIRST_DIRECTIVE_UNISTD_H@
+NEXT_AS_FIRST_DIRECTIVE_WCHAR_H = @NEXT_AS_FIRST_DIRECTIVE_WCHAR_H@
+NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H@
+NEXT_CTYPE_H = @NEXT_CTYPE_H@
+NEXT_DIRENT_H = @NEXT_DIRENT_H@
+NEXT_ERRNO_H = @NEXT_ERRNO_H@
+NEXT_FCNTL_H = @NEXT_FCNTL_H@
+NEXT_FLOAT_H = @NEXT_FLOAT_H@
+NEXT_FNMATCH_H = @NEXT_FNMATCH_H@
+NEXT_GETOPT_H = @NEXT_GETOPT_H@
+NEXT_ICONV_H = @NEXT_ICONV_H@
+NEXT_INTTYPES_H = @NEXT_INTTYPES_H@
+NEXT_LANGINFO_H = @NEXT_LANGINFO_H@
+NEXT_LIMITS_H = @NEXT_LIMITS_H@
+NEXT_LOCALE_H = @NEXT_LOCALE_H@
+NEXT_NETINET_IN_H = @NEXT_NETINET_IN_H@
+NEXT_PTHREAD_H = @NEXT_PTHREAD_H@
+NEXT_SCHED_H = @NEXT_SCHED_H@
+NEXT_SIGNAL_H = @NEXT_SIGNAL_H@
+NEXT_STDARG_H = @NEXT_STDARG_H@
+NEXT_STDDEF_H = @NEXT_STDDEF_H@
+NEXT_STDINT_H = @NEXT_STDINT_H@
+NEXT_STDIO_H = @NEXT_STDIO_H@
+NEXT_STDLIB_H = @NEXT_STDLIB_H@
+NEXT_STRING_H = @NEXT_STRING_H@
+NEXT_SYS_IOCTL_H = @NEXT_SYS_IOCTL_H@
+NEXT_SYS_SELECT_H = @NEXT_SYS_SELECT_H@
+NEXT_SYS_SOCKET_H = @NEXT_SYS_SOCKET_H@
+NEXT_SYS_STAT_H = @NEXT_SYS_STAT_H@
+NEXT_SYS_TIME_H = @NEXT_SYS_TIME_H@
+NEXT_SYS_TYPES_H = @NEXT_SYS_TYPES_H@
+NEXT_SYS_UIO_H = @NEXT_SYS_UIO_H@
+NEXT_TIME_H = @NEXT_TIME_H@
+NEXT_UNISTD_H = @NEXT_UNISTD_H@
+NEXT_WCHAR_H = @NEXT_WCHAR_H@
+NEXT_WCTYPE_H = @NEXT_WCTYPE_H@
+OBJEXT = @OBJEXT@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PCRE_CFLAGS = @PCRE_CFLAGS@
+PCRE_LIBS = @PCRE_LIBS@
+PERL = @PERL@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+POSUB = @POSUB@
+PRAGMA_COLUMNS = @PRAGMA_COLUMNS@
+PRAGMA_SYSTEM_HEADER = @PRAGMA_SYSTEM_HEADER@
+PRIPTR_PREFIX = @PRIPTR_PREFIX@
+PTHREAD_H_DEFINES_STRUCT_TIMESPEC = @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
+PTRDIFF_T_SUFFIX = @PTRDIFF_T_SUFFIX@
+RANLIB = @RANLIB@
+REPLACE_ACCESS = @REPLACE_ACCESS@
+REPLACE_ALIGNED_ALLOC = @REPLACE_ALIGNED_ALLOC@
+REPLACE_BTOWC = @REPLACE_BTOWC@
+REPLACE_CALLOC = @REPLACE_CALLOC@
+REPLACE_CANONICALIZE_FILE_NAME = @REPLACE_CANONICALIZE_FILE_NAME@
+REPLACE_CHOWN = @REPLACE_CHOWN@
+REPLACE_CLOSE = @REPLACE_CLOSE@
+REPLACE_CLOSEDIR = @REPLACE_CLOSEDIR@
+REPLACE_CREAT = @REPLACE_CREAT@
+REPLACE_CTIME = @REPLACE_CTIME@
+REPLACE_DIRFD = @REPLACE_DIRFD@
+REPLACE_DPRINTF = @REPLACE_DPRINTF@
+REPLACE_DUP = @REPLACE_DUP@
+REPLACE_DUP2 = @REPLACE_DUP2@
+REPLACE_DUPLOCALE = @REPLACE_DUPLOCALE@
+REPLACE_EXECL = @REPLACE_EXECL@
+REPLACE_EXECLE = @REPLACE_EXECLE@
+REPLACE_EXECLP = @REPLACE_EXECLP@
+REPLACE_EXECV = @REPLACE_EXECV@
+REPLACE_EXECVE = @REPLACE_EXECVE@
+REPLACE_EXECVP = @REPLACE_EXECVP@
+REPLACE_EXECVPE = @REPLACE_EXECVPE@
+REPLACE_FACCESSAT = @REPLACE_FACCESSAT@
+REPLACE_FCHMODAT = @REPLACE_FCHMODAT@
+REPLACE_FCHOWNAT = @REPLACE_FCHOWNAT@
+REPLACE_FCLOSE = @REPLACE_FCLOSE@
+REPLACE_FCNTL = @REPLACE_FCNTL@
+REPLACE_FDOPEN = @REPLACE_FDOPEN@
+REPLACE_FDOPENDIR = @REPLACE_FDOPENDIR@
+REPLACE_FFLUSH = @REPLACE_FFLUSH@
+REPLACE_FFSLL = @REPLACE_FFSLL@
+REPLACE_FNMATCH = @REPLACE_FNMATCH@
+REPLACE_FOPEN = @REPLACE_FOPEN@
+REPLACE_FPRINTF = @REPLACE_FPRINTF@
+REPLACE_FPURGE = @REPLACE_FPURGE@
+REPLACE_FREE = @REPLACE_FREE@
+REPLACE_FREELOCALE = @REPLACE_FREELOCALE@
+REPLACE_FREOPEN = @REPLACE_FREOPEN@
+REPLACE_FSEEK = @REPLACE_FSEEK@
+REPLACE_FSEEKO = @REPLACE_FSEEKO@
+REPLACE_FSTAT = @REPLACE_FSTAT@
+REPLACE_FSTATAT = @REPLACE_FSTATAT@
+REPLACE_FTELL = @REPLACE_FTELL@
+REPLACE_FTELLO = @REPLACE_FTELLO@
+REPLACE_FTRUNCATE = @REPLACE_FTRUNCATE@
+REPLACE_FUTIMENS = @REPLACE_FUTIMENS@
+REPLACE_GETCWD = @REPLACE_GETCWD@
+REPLACE_GETDELIM = @REPLACE_GETDELIM@
+REPLACE_GETDOMAINNAME = @REPLACE_GETDOMAINNAME@
+REPLACE_GETDTABLESIZE = @REPLACE_GETDTABLESIZE@
+REPLACE_GETGROUPS = @REPLACE_GETGROUPS@
+REPLACE_GETLINE = @REPLACE_GETLINE@
+REPLACE_GETLOGIN_R = @REPLACE_GETLOGIN_R@
+REPLACE_GETPAGESIZE = @REPLACE_GETPAGESIZE@
+REPLACE_GETPASS = @REPLACE_GETPASS@
+REPLACE_GETTIMEOFDAY = @REPLACE_GETTIMEOFDAY@
+REPLACE_GMTIME = @REPLACE_GMTIME@
+REPLACE_ICONV = @REPLACE_ICONV@
+REPLACE_ICONV_OPEN = @REPLACE_ICONV_OPEN@
+REPLACE_ICONV_UTF = @REPLACE_ICONV_UTF@
+REPLACE_INET_NTOP = @REPLACE_INET_NTOP@
+REPLACE_INET_PTON = @REPLACE_INET_PTON@
+REPLACE_INITSTATE = @REPLACE_INITSTATE@
+REPLACE_IOCTL = @REPLACE_IOCTL@
+REPLACE_ISATTY = @REPLACE_ISATTY@
+REPLACE_ISWBLANK = @REPLACE_ISWBLANK@
+REPLACE_ISWCNTRL = @REPLACE_ISWCNTRL@
+REPLACE_ISWDIGIT = @REPLACE_ISWDIGIT@
+REPLACE_ISWXDIGIT = @REPLACE_ISWXDIGIT@
+REPLACE_ITOLD = @REPLACE_ITOLD@
+REPLACE_LCHOWN = @REPLACE_LCHOWN@
+REPLACE_LINK = @REPLACE_LINK@
+REPLACE_LINKAT = @REPLACE_LINKAT@
+REPLACE_LOCALECONV = @REPLACE_LOCALECONV@
+REPLACE_LOCALTIME = @REPLACE_LOCALTIME@
+REPLACE_LOCALTIME_R = @REPLACE_LOCALTIME_R@
+REPLACE_LSEEK = @REPLACE_LSEEK@
+REPLACE_LSTAT = @REPLACE_LSTAT@
+REPLACE_MALLOC = @REPLACE_MALLOC@
+REPLACE_MBRLEN = @REPLACE_MBRLEN@
+REPLACE_MBRTOWC = @REPLACE_MBRTOWC@
+REPLACE_MBSINIT = @REPLACE_MBSINIT@
+REPLACE_MBSNRTOWCS = @REPLACE_MBSNRTOWCS@
+REPLACE_MBSRTOWCS = @REPLACE_MBSRTOWCS@
+REPLACE_MBSTATE_T = @REPLACE_MBSTATE_T@
+REPLACE_MBTOWC = @REPLACE_MBTOWC@
+REPLACE_MEMCHR = @REPLACE_MEMCHR@
+REPLACE_MEMMEM = @REPLACE_MEMMEM@
+REPLACE_MKDIR = @REPLACE_MKDIR@
+REPLACE_MKFIFO = @REPLACE_MKFIFO@
+REPLACE_MKFIFOAT = @REPLACE_MKFIFOAT@
+REPLACE_MKNOD = @REPLACE_MKNOD@
+REPLACE_MKNODAT = @REPLACE_MKNODAT@
+REPLACE_MKSTEMP = @REPLACE_MKSTEMP@
+REPLACE_MKTIME = @REPLACE_MKTIME@
+REPLACE_NANOSLEEP = @REPLACE_NANOSLEEP@
+REPLACE_NEWLOCALE = @REPLACE_NEWLOCALE@
+REPLACE_NL_LANGINFO = @REPLACE_NL_LANGINFO@
+REPLACE_NULL = @REPLACE_NULL@
+REPLACE_OBSTACK_PRINTF = @REPLACE_OBSTACK_PRINTF@
+REPLACE_OPEN = @REPLACE_OPEN@
+REPLACE_OPENAT = @REPLACE_OPENAT@
+REPLACE_OPENDIR = @REPLACE_OPENDIR@
+REPLACE_PERROR = @REPLACE_PERROR@
+REPLACE_POPEN = @REPLACE_POPEN@
+REPLACE_POSIX_MEMALIGN = @REPLACE_POSIX_MEMALIGN@
+REPLACE_PREAD = @REPLACE_PREAD@
+REPLACE_PRINTF = @REPLACE_PRINTF@
+REPLACE_PSELECT = @REPLACE_PSELECT@
+REPLACE_PTHREAD_ATTR_DESTROY = @REPLACE_PTHREAD_ATTR_DESTROY@
+REPLACE_PTHREAD_ATTR_GETDETACHSTATE = @REPLACE_PTHREAD_ATTR_GETDETACHSTATE@
+REPLACE_PTHREAD_ATTR_INIT = @REPLACE_PTHREAD_ATTR_INIT@
+REPLACE_PTHREAD_ATTR_SETDETACHSTATE = @REPLACE_PTHREAD_ATTR_SETDETACHSTATE@
+REPLACE_PTHREAD_CONDATTR_DESTROY = @REPLACE_PTHREAD_CONDATTR_DESTROY@
+REPLACE_PTHREAD_CONDATTR_INIT = @REPLACE_PTHREAD_CONDATTR_INIT@
+REPLACE_PTHREAD_COND_BROADCAST = @REPLACE_PTHREAD_COND_BROADCAST@
+REPLACE_PTHREAD_COND_DESTROY = @REPLACE_PTHREAD_COND_DESTROY@
+REPLACE_PTHREAD_COND_INIT = @REPLACE_PTHREAD_COND_INIT@
+REPLACE_PTHREAD_COND_SIGNAL = @REPLACE_PTHREAD_COND_SIGNAL@
+REPLACE_PTHREAD_COND_TIMEDWAIT = @REPLACE_PTHREAD_COND_TIMEDWAIT@
+REPLACE_PTHREAD_COND_WAIT = @REPLACE_PTHREAD_COND_WAIT@
+REPLACE_PTHREAD_CREATE = @REPLACE_PTHREAD_CREATE@
+REPLACE_PTHREAD_DETACH = @REPLACE_PTHREAD_DETACH@
+REPLACE_PTHREAD_EQUAL = @REPLACE_PTHREAD_EQUAL@
+REPLACE_PTHREAD_EXIT = @REPLACE_PTHREAD_EXIT@
+REPLACE_PTHREAD_GETSPECIFIC = @REPLACE_PTHREAD_GETSPECIFIC@
+REPLACE_PTHREAD_JOIN = @REPLACE_PTHREAD_JOIN@
+REPLACE_PTHREAD_KEY_CREATE = @REPLACE_PTHREAD_KEY_CREATE@
+REPLACE_PTHREAD_KEY_DELETE = @REPLACE_PTHREAD_KEY_DELETE@
+REPLACE_PTHREAD_MUTEXATTR_DESTROY = @REPLACE_PTHREAD_MUTEXATTR_DESTROY@
+REPLACE_PTHREAD_MUTEXATTR_GETROBUST = @REPLACE_PTHREAD_MUTEXATTR_GETROBUST@
+REPLACE_PTHREAD_MUTEXATTR_GETTYPE = @REPLACE_PTHREAD_MUTEXATTR_GETTYPE@
+REPLACE_PTHREAD_MUTEXATTR_INIT = @REPLACE_PTHREAD_MUTEXATTR_INIT@
+REPLACE_PTHREAD_MUTEXATTR_SETROBUST = @REPLACE_PTHREAD_MUTEXATTR_SETROBUST@
+REPLACE_PTHREAD_MUTEXATTR_SETTYPE = @REPLACE_PTHREAD_MUTEXATTR_SETTYPE@
+REPLACE_PTHREAD_MUTEX_DESTROY = @REPLACE_PTHREAD_MUTEX_DESTROY@
+REPLACE_PTHREAD_MUTEX_INIT = @REPLACE_PTHREAD_MUTEX_INIT@
+REPLACE_PTHREAD_MUTEX_LOCK = @REPLACE_PTHREAD_MUTEX_LOCK@
+REPLACE_PTHREAD_MUTEX_TIMEDLOCK = @REPLACE_PTHREAD_MUTEX_TIMEDLOCK@
+REPLACE_PTHREAD_MUTEX_TRYLOCK = @REPLACE_PTHREAD_MUTEX_TRYLOCK@
+REPLACE_PTHREAD_MUTEX_UNLOCK = @REPLACE_PTHREAD_MUTEX_UNLOCK@
+REPLACE_PTHREAD_ONCE = @REPLACE_PTHREAD_ONCE@
+REPLACE_PTHREAD_RWLOCKATTR_DESTROY = @REPLACE_PTHREAD_RWLOCKATTR_DESTROY@
+REPLACE_PTHREAD_RWLOCKATTR_INIT = @REPLACE_PTHREAD_RWLOCKATTR_INIT@
+REPLACE_PTHREAD_RWLOCK_DESTROY = @REPLACE_PTHREAD_RWLOCK_DESTROY@
+REPLACE_PTHREAD_RWLOCK_INIT = @REPLACE_PTHREAD_RWLOCK_INIT@
+REPLACE_PTHREAD_RWLOCK_RDLOCK = @REPLACE_PTHREAD_RWLOCK_RDLOCK@
+REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK = @REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK = @REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+REPLACE_PTHREAD_RWLOCK_TRYRDLOCK = @REPLACE_PTHREAD_RWLOCK_TRYRDLOCK@
+REPLACE_PTHREAD_RWLOCK_TRYWRLOCK = @REPLACE_PTHREAD_RWLOCK_TRYWRLOCK@
+REPLACE_PTHREAD_RWLOCK_UNLOCK = @REPLACE_PTHREAD_RWLOCK_UNLOCK@
+REPLACE_PTHREAD_RWLOCK_WRLOCK = @REPLACE_PTHREAD_RWLOCK_WRLOCK@
+REPLACE_PTHREAD_SELF = @REPLACE_PTHREAD_SELF@
+REPLACE_PTHREAD_SETSPECIFIC = @REPLACE_PTHREAD_SETSPECIFIC@
+REPLACE_PTHREAD_SIGMASK = @REPLACE_PTHREAD_SIGMASK@
+REPLACE_PTHREAD_SPIN_DESTROY = @REPLACE_PTHREAD_SPIN_DESTROY@
+REPLACE_PTHREAD_SPIN_INIT = @REPLACE_PTHREAD_SPIN_INIT@
+REPLACE_PTHREAD_SPIN_LOCK = @REPLACE_PTHREAD_SPIN_LOCK@
+REPLACE_PTHREAD_SPIN_TRYLOCK = @REPLACE_PTHREAD_SPIN_TRYLOCK@
+REPLACE_PTHREAD_SPIN_UNLOCK = @REPLACE_PTHREAD_SPIN_UNLOCK@
+REPLACE_PTSNAME = @REPLACE_PTSNAME@
+REPLACE_PTSNAME_R = @REPLACE_PTSNAME_R@
+REPLACE_PUTENV = @REPLACE_PUTENV@
+REPLACE_PWRITE = @REPLACE_PWRITE@
+REPLACE_QSORT_R = @REPLACE_QSORT_R@
+REPLACE_RAISE = @REPLACE_RAISE@
+REPLACE_RANDOM = @REPLACE_RANDOM@
+REPLACE_RANDOM_R = @REPLACE_RANDOM_R@
+REPLACE_READ = @REPLACE_READ@
+REPLACE_READLINK = @REPLACE_READLINK@
+REPLACE_READLINKAT = @REPLACE_READLINKAT@
+REPLACE_REALLOC = @REPLACE_REALLOC@
+REPLACE_REALLOCARRAY = @REPLACE_REALLOCARRAY@
+REPLACE_REALPATH = @REPLACE_REALPATH@
+REPLACE_REMOVE = @REPLACE_REMOVE@
+REPLACE_RENAME = @REPLACE_RENAME@
+REPLACE_RENAMEAT = @REPLACE_RENAMEAT@
+REPLACE_RMDIR = @REPLACE_RMDIR@
+REPLACE_SCHED_YIELD = @REPLACE_SCHED_YIELD@
+REPLACE_SELECT = @REPLACE_SELECT@
+REPLACE_SETENV = @REPLACE_SETENV@
+REPLACE_SETLOCALE = @REPLACE_SETLOCALE@
+REPLACE_SETSTATE = @REPLACE_SETSTATE@
+REPLACE_SLEEP = @REPLACE_SLEEP@
+REPLACE_SNPRINTF = @REPLACE_SNPRINTF@
+REPLACE_SPRINTF = @REPLACE_SPRINTF@
+REPLACE_STAT = @REPLACE_STAT@
+REPLACE_STDIO_READ_FUNCS = @REPLACE_STDIO_READ_FUNCS@
+REPLACE_STDIO_WRITE_FUNCS = @REPLACE_STDIO_WRITE_FUNCS@
+REPLACE_STPNCPY = @REPLACE_STPNCPY@
+REPLACE_STRCASESTR = @REPLACE_STRCASESTR@
+REPLACE_STRCHRNUL = @REPLACE_STRCHRNUL@
+REPLACE_STRDUP = @REPLACE_STRDUP@
+REPLACE_STRERROR = @REPLACE_STRERROR@
+REPLACE_STRERRORNAME_NP = @REPLACE_STRERRORNAME_NP@
+REPLACE_STRERROR_R = @REPLACE_STRERROR_R@
+REPLACE_STRFTIME = @REPLACE_STRFTIME@
+REPLACE_STRNCAT = @REPLACE_STRNCAT@
+REPLACE_STRNDUP = @REPLACE_STRNDUP@
+REPLACE_STRNLEN = @REPLACE_STRNLEN@
+REPLACE_STRSIGNAL = @REPLACE_STRSIGNAL@
+REPLACE_STRSTR = @REPLACE_STRSTR@
+REPLACE_STRTOD = @REPLACE_STRTOD@
+REPLACE_STRTOIMAX = @REPLACE_STRTOIMAX@
+REPLACE_STRTOK_R = @REPLACE_STRTOK_R@
+REPLACE_STRTOL = @REPLACE_STRTOL@
+REPLACE_STRTOLD = @REPLACE_STRTOLD@
+REPLACE_STRTOLL = @REPLACE_STRTOLL@
+REPLACE_STRTOUL = @REPLACE_STRTOUL@
+REPLACE_STRTOULL = @REPLACE_STRTOULL@
+REPLACE_STRTOUMAX = @REPLACE_STRTOUMAX@
+REPLACE_STRUCT_LCONV = @REPLACE_STRUCT_LCONV@
+REPLACE_STRUCT_TIMEVAL = @REPLACE_STRUCT_TIMEVAL@
+REPLACE_SYMLINK = @REPLACE_SYMLINK@
+REPLACE_SYMLINKAT = @REPLACE_SYMLINKAT@
+REPLACE_TIMEGM = @REPLACE_TIMEGM@
+REPLACE_TMPFILE = @REPLACE_TMPFILE@
+REPLACE_TOWLOWER = @REPLACE_TOWLOWER@
+REPLACE_TRUNCATE = @REPLACE_TRUNCATE@
+REPLACE_TTYNAME_R = @REPLACE_TTYNAME_R@
+REPLACE_TZSET = @REPLACE_TZSET@
+REPLACE_UNLINK = @REPLACE_UNLINK@
+REPLACE_UNLINKAT = @REPLACE_UNLINKAT@
+REPLACE_UNSETENV = @REPLACE_UNSETENV@
+REPLACE_USLEEP = @REPLACE_USLEEP@
+REPLACE_UTIMENSAT = @REPLACE_UTIMENSAT@
+REPLACE_VASPRINTF = @REPLACE_VASPRINTF@
+REPLACE_VDPRINTF = @REPLACE_VDPRINTF@
+REPLACE_VFPRINTF = @REPLACE_VFPRINTF@
+REPLACE_VPRINTF = @REPLACE_VPRINTF@
+REPLACE_VSNPRINTF = @REPLACE_VSNPRINTF@
+REPLACE_VSPRINTF = @REPLACE_VSPRINTF@
+REPLACE_WCRTOMB = @REPLACE_WCRTOMB@
+REPLACE_WCSFTIME = @REPLACE_WCSFTIME@
+REPLACE_WCSNRTOMBS = @REPLACE_WCSNRTOMBS@
+REPLACE_WCSRTOMBS = @REPLACE_WCSRTOMBS@
+REPLACE_WCSTOK = @REPLACE_WCSTOK@
+REPLACE_WCSWIDTH = @REPLACE_WCSWIDTH@
+REPLACE_WCTOB = @REPLACE_WCTOB@
+REPLACE_WCTOMB = @REPLACE_WCTOMB@
+REPLACE_WCWIDTH = @REPLACE_WCWIDTH@
+REPLACE_WRITE = @REPLACE_WRITE@
+SED = @SED@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+SIGSEGV_H = @SIGSEGV_H@
+SIG_ATOMIC_T_SUFFIX = @SIG_ATOMIC_T_SUFFIX@
+SIZE_T_SUFFIX = @SIZE_T_SUFFIX@
+STDALIGN_H = @STDALIGN_H@
+STDARG_H = @STDARG_H@
+STDBOOL_H = @STDBOOL_H@
+STDDEF_H = @STDDEF_H@
+STDINT_H = @STDINT_H@
+STRIP = @STRIP@
+SYS_IOCTL_H_HAVE_WINSOCK2_H = @SYS_IOCTL_H_HAVE_WINSOCK2_H@
+SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS = @SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+SYS_TIME_H_DEFINES_STRUCT_TIMESPEC = @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
+TIME_H_DEFINES_STRUCT_TIMESPEC = @TIME_H_DEFINES_STRUCT_TIMESPEC@
+TIME_H_DEFINES_TIME_UTC = @TIME_H_DEFINES_TIME_UTC@
+UINT32_MAX_LT_UINTMAX_MAX = @UINT32_MAX_LT_UINTMAX_MAX@
+UINT64_MAX_EQ_ULONG_MAX = @UINT64_MAX_EQ_ULONG_MAX@
+UNDEFINE_STRTOK_R = @UNDEFINE_STRTOK_R@
+UNISTD_H_DEFINES_STRUCT_TIMESPEC = @UNISTD_H_DEFINES_STRUCT_TIMESPEC@
+UNISTD_H_HAVE_SYS_RANDOM_H = @UNISTD_H_HAVE_SYS_RANDOM_H@
+UNISTD_H_HAVE_WINSOCK2_H = @UNISTD_H_HAVE_WINSOCK2_H@
+UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS = @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+USE_NLS = @USE_NLS@
+VERSION = @VERSION@
+WARN_CFLAGS = @WARN_CFLAGS@
+WCHAR_T_SUFFIX = @WCHAR_T_SUFFIX@
+WERROR_CFLAGS = @WERROR_CFLAGS@
+WINDOWS_64_BIT_OFF_T = @WINDOWS_64_BIT_OFF_T@
+WINDOWS_64_BIT_ST_SIZE = @WINDOWS_64_BIT_ST_SIZE@
+WINDOWS_STAT_INODES = @WINDOWS_STAT_INODES@
+WINDOWS_STAT_TIMESPEC = @WINDOWS_STAT_TIMESPEC@
+WINT_T_SUFFIX = @WINT_T_SUFFIX@
+XGETTEXT = @XGETTEXT@
+XGETTEXT_015 = @XGETTEXT_015@
+XGETTEXT_EXTRA_OPTIONS = @XGETTEXT_EXTRA_OPTIONS@
+abs_aux_dir = @abs_aux_dir@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
+ac_ct_CC = @ac_ct_CC@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+builddir = @builddir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+gl_LIBOBJS = @gl_LIBOBJS@
+gl_LTLIBOBJS = @gl_LTLIBOBJS@
+gltests_LIBOBJS = @gltests_LIBOBJS@
+gltests_LTLIBOBJS = @gltests_LTLIBOBJS@
+gltests_WITNESS = @gltests_WITNESS@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libdir = @libdir@
+libexecdir = @libexecdir@
+lispdir = @lispdir@
+localedir = @localedir@
+localstatedir = @localstatedir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+runstatedir = @runstatedir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+AM_CFLAGS = $(GNULIB_WARN_CFLAGS) $(WERROR_CFLAGS)
+AM_CPPFLAGS = 
+BUILT_SOURCES = $(ALLOCA_H) configmake.h ctype.h dirent.h \
+	malloc/dynarray.gl.h malloc/dynarray-skeleton.gl.h $(ERRNO_H) \
+	fcntl.h $(FNMATCH_H) $(GETOPT_H) $(GETOPT_CDEFS_H) $(ICONV_H) \
+	iconv_open-aix.h iconv_open-hpux.h iconv_open-irix.h \
+	iconv_open-osf.h iconv_open-solaris.h iconv_open-zos.h \
+	inttypes.h langinfo.h $(LIMITS_H) locale.h signal.h \
+	$(SIGSEGV_H) $(STDALIGN_H) $(STDARG_H) $(STDBOOL_H) \
+	$(STDDEF_H) $(STDINT_H) stdio.h stdlib.h string.h sys/stat.h \
+	sys/types.h time.h unistd.h $(LIBUNISTRING_UNISTR_H) \
+	$(LIBUNISTRING_UNITYPES_H) $(LIBUNISTRING_UNIWIDTH_H) wchar.h \
+	wctype.h
+CLEANFILES = configmake.h configmake.h-t colorize.c
+EXTRA_DIST = alignof.h alloca.c alloca.in.h \
+	$(top_srcdir)/build-aux/announce-gen argmatch.h assure.h \
+	attribute.h basename-lgpl.h btowc.c c-strcaseeq.h calloc.c \
+	calloc.c chdir-long.c chdir-long.h cloexec.h close.c \
+	close-stream.h closedir.c dirent-private.h closeout.h \
+	ctype.in.h cycle-check.h dev-ino.h dfa.h localeinfo.h \
+	dirent.in.h dirfd.c dirname.h \
+	$(top_srcdir)/build-aux/do-release-commit-and-tag dup.c dup2.c \
+	dynarray.h malloc/dynarray-skeleton.c malloc/dynarray.h \
+	errno.in.h error.c error.h exclude.h exitfail.h fchdir.c \
+	fcntl.c fcntl.in.h fcntl--.h fcntl-safer.h fd-hook.h \
+	fdopendir.c filename.h filenamecat.h flexmember.h fnmatch.c \
+	fnmatch_loop.c fnmatch.in.h fopen.c fopen.c fpending.c \
+	fpending.h stdio-impl.h free.c fstat.c stat-w32.c stat-w32.h \
+	at-func.c fstatat.c fts-cycle.c fts.c fts_.h \
+	$(top_srcdir)/build-aux/gendocs.sh getcwd-lgpl.c \
+	getdtablesize.c getopt-cdefs.in.h getopt-core.h getopt-ext.h \
+	getopt-pfx-core.h getopt-pfx-ext.h getopt.c getopt.in.h \
+	getopt1.c getopt_int.h getpagesize.c \
+	$(top_srcdir)/build-aux/git-version-gen \
+	$(top_srcdir)/build-aux/gitlog-to-changelog \
+	$(top_srcdir)/build-aux/gnu-web-doc-update \
+	$(top_srcdir)/GNUmakefile $(top_srcdir)/build-aux/gnupload \
+	hard-locale.h hash.h $(top_srcdir)/build-aux/config.rpath \
+	i-ring.h ialloc.h iconv.in.h iconv_open-aix.h \
+	iconv_open-hpux.h iconv_open-irix.h iconv_open-osf.h \
+	iconv_open-solaris.h iconv_open-zos.h iconv.c iconv_close.c \
+	iconv_open-aix.gperf iconv_open-hpux.gperf \
+	iconv_open-irix.gperf iconv_open-osf.gperf \
+	iconv_open-solaris.gperf iconv_open-zos.gperf iconv_open.c \
+	ignore-value.h intprops.h inttypes.in.h isatty.c isblank.c \
+	iswblank.c iswctype-impl.h iswctype.c iswdigit.c iswxdigit.c \
+	langinfo.in.h cdefs.h libc-config.h limits.in.h localcharset.h \
+	locale.in.h localeconv.c lseek.c lstat.c \
+	$(top_srcdir)/maint.mk malloc.c malloc.c malloca.h mbchar.h \
+	mbrlen.c lc-charset-dispatch.c lc-charset-dispatch.h \
+	mbrtowc-impl-utf8.h mbrtowc-impl.h mbrtowc.c mbtowc-lock.c \
+	mbtowc-lock.h windows-initguard.h mbsinit.c mbsrtowcs-impl.h \
+	mbsrtowcs-state.c mbsrtowcs.c str-kmp.h mbtowc-impl.h mbtowc.c \
+	memchr.c memchr.valgrind memchr2.valgrind mempcpy.c memrchr.c \
+	msvc-inval.c msvc-inval.h msvc-nothrow.c msvc-nothrow.h \
+	nl_langinfo-lock.c nl_langinfo.c windows-initguard.h obstack.c \
+	obstack.h open.c openat.c openat.h fcntl--.h fcntl-safer.h \
+	dirent-private.h opendir.c opendirat.h pathmax.h pipe.c \
+	quote.h quote.h quotearg.h raise.c rawmemchr.c \
+	rawmemchr.valgrind read.c dirent-private.h readdir.c realloc.c \
+	realloc.c reallocarray.c regcomp.c regex.c regex.h \
+	regex_internal.c regex_internal.h regexec.c safe-read.h \
+	sys-limits.h same-inode.h save-cwd.h setlocale-lock.c \
+	setlocale_null.h windows-initguard.h signal.in.h sigsegv.in.h \
+	stackvma.h _Noreturn.h arg-nonnull.h c++defs.h warn-on-use.h \
+	stat-w32.c stat-w32.h stat.c stat-time.h stdalign.in.h \
+	stdarg.in.h stdbool.in.h stddef.in.h stdint.in.h stdio.in.h \
+	stdlib.in.h stpcpy.c strdup.c streq.h strerror.c \
+	strerror-override.c strerror-override.h string.in.h strnlen.c \
+	strstr.c str-two-way.h strstr.c strtoimax.c strtol.c strtoll.c \
+	strtol.c strtoul.c strtoull.c strtoimax.c strtoumax.c \
+	sys_stat.in.h sys_types.in.h time.in.h trim.h unistd.in.h \
+	unistd--.h unistd-safer.h unistr.in.h unitypes.in.h \
+	localcharset.h uniwidth.in.h uniwidth/cjk.h unlocked-io.h \
+	$(top_srcdir)/build-aux/update-copyright \
+	$(top_srcdir)/build-aux/useless-if-before-free \
+	$(top_srcdir)/build-aux/vc-list-files verify.h wchar.in.h \
+	wcrtomb.c wctob.c wctomb-impl.h wctomb.c wctype.in.h wcwidth.c \
+	windows-initguard.h windows-mutex.c windows-mutex.h \
+	windows-once.c windows-once.h windows-initguard.h \
+	windows-recmutex.c windows-recmutex.h windows-initguard.h \
+	windows-rwlock.c windows-rwlock.h wmemchr-impl.h wmemchr.c \
+	wmempcpy.c xalloc.h xalloc.h xalloc-oversized.h xstrtol.h \
+	colorize-posix.c colorize-w32.c
+MAINTAINERCLEANFILES = iconv_open-aix.h iconv_open-hpux.h \
+	iconv_open-irix.h iconv_open-osf.h iconv_open-solaris.h \
+	iconv_open-zos.h
+MOSTLYCLEANDIRS = sys
+MOSTLYCLEANFILES = core *.stackdump alloca.h alloca.h-t ctype.h \
+	ctype.h-t dirent.h dirent.h-t malloc/dynarray.gl.h \
+	malloc/dynarray.gl.h-t malloc/dynarray-skeleton.gl.h \
+	malloc/dynarray-skeleton.gl.h-t errno.h errno.h-t fcntl.h \
+	fcntl.h-t fnmatch.h fnmatch.h-t getopt.h getopt.h-t \
+	getopt-cdefs.h getopt-cdefs.h-t iconv.h iconv.h-t \
+	iconv_open-aix.h-t iconv_open-hpux.h-t iconv_open-irix.h-t \
+	iconv_open-osf.h-t iconv_open-solaris.h-t iconv_open-zos.h-t \
+	inttypes.h inttypes.h-t langinfo.h langinfo.h-t limits.h \
+	limits.h-t locale.h locale.h-t signal.h signal.h-t sigsegv.h \
+	sigsegv.h-t stdalign.h stdalign.h-t stdarg.h stdarg.h-t \
+	stdbool.h stdbool.h-t stddef.h stddef.h-t stdint.h stdint.h-t \
+	stdio.h stdio.h-t stdlib.h stdlib.h-t string.h string.h-t \
+	sys/stat.h sys/stat.h-t sys/types.h sys/types.h-t time.h \
+	time.h-t unistd.h unistd.h-t unistr.h unistr.h-t unitypes.h \
+	unitypes.h-t uniwidth.h uniwidth.h-t wchar.h wchar.h-t \
+	wctype.h wctype.h-t
+SUFFIXES = 
+# No GNU Make output.
+noinst_LIBRARIES = libgreputils.a
+libgreputils_a_SOURCES = argmatch.c openat-priv.h openat-proc.c \
+	basename-lgpl.c binary-io.h binary-io.c bitrotate.h \
+	bitrotate.c c-ctype.h c-ctype.c c-stack.h c-stack.c \
+	c-strcase.h c-strcasecmp.c c-strncasecmp.c cloexec.c \
+	close-stream.c closeout.c cycle-check.c dfa.c localeinfo.c \
+	dirname-lgpl.c stripslash.c malloc/dynarray_at_failure.c \
+	malloc/dynarray_emplace_enlarge.c malloc/dynarray_finalize.c \
+	malloc/dynarray_resize.c malloc/dynarray_resize_clear.c \
+	exclude.c exitfail.c creat-safer.c open-safer.c fd-hook.c \
+	fd-safer-flag.c dup-safer-flag.c filenamecat-lgpl.c \
+	getprogname.h getprogname.c gettext.h hard-locale.c hash.c \
+	i-ring.c ialloc.c idx.h localcharset.c glthread/lock.h \
+	glthread/lock.c malloca.c mbchar.c mbiter.h mbiter.c \
+	mbscasecmp.c mbslen.c mbsstr.c mbuiter.h mbuiter.c memchr2.h \
+	memchr2.c minmax.h openat-die.c openat-safer.c opendirat.c \
+	propername.h propername.c quotearg.c safe-read.c save-cwd.c \
+	setlocale_null.c $(am__append_1) stat-time.c striconv.h \
+	striconv.c strnlen1.h strnlen1.c glthread/threadlib.c trim.c \
+	unistd.c dup-safer.c fd-safer.c pipe-safer.c $(am__append_2) \
+	$(am__append_3) $(am__append_4) version-etc.h version-etc.c \
+	version-etc-fsf.c wctype-h.c xmalloc.c xalloc-die.c \
+	xbinary-io.h xbinary-io.c xstriconv.h xstriconv.c xstrtoimax.c \
+	xstrtol.c xstrtoul.c colorize.h
+libgreputils_a_LIBADD = $(gl_LIBOBJS) @ALLOCA@ $(LIBOBJS) $(ALLOCA)
+libgreputils_a_DEPENDENCIES = $(gl_LIBOBJS) @ALLOCA@ $(LIBOBJS) \
+	$(ALLOCA)
+EXTRA_libgreputils_a_SOURCES = alloca.c btowc.c calloc.c calloc.c \
+	chdir-long.c close.c closedir.c dirfd.c dup.c dup2.c \
+	malloc/dynarray-skeleton.c error.c fchdir.c fcntl.c \
+	fdopendir.c fnmatch.c fnmatch_loop.c fopen.c fopen.c \
+	fpending.c free.c fstat.c stat-w32.c at-func.c fstatat.c \
+	fts-cycle.c fts.c getcwd-lgpl.c getdtablesize.c getopt.c \
+	getopt1.c getpagesize.c iconv.c iconv_close.c iconv_open.c \
+	isatty.c isblank.c iswblank.c iswctype.c iswdigit.c \
+	iswxdigit.c localeconv.c lseek.c lstat.c malloc.c malloc.c \
+	mbrlen.c lc-charset-dispatch.c mbrtowc.c mbtowc-lock.c \
+	mbsinit.c mbsrtowcs-state.c mbsrtowcs.c mbtowc.c memchr.c \
+	mempcpy.c memrchr.c msvc-inval.c msvc-nothrow.c \
+	nl_langinfo-lock.c nl_langinfo.c obstack.c open.c openat.c \
+	opendir.c pipe.c raise.c rawmemchr.c read.c readdir.c \
+	realloc.c realloc.c reallocarray.c regcomp.c regex.c \
+	regex_internal.c regexec.c setlocale-lock.c stat-w32.c stat.c \
+	stpcpy.c strdup.c strerror.c strerror-override.c strnlen.c \
+	strstr.c strstr.c strtoimax.c strtol.c strtoll.c strtol.c \
+	strtoul.c strtoull.c strtoimax.c strtoumax.c wcrtomb.c wctob.c \
+	wctomb.c wcwidth.c windows-mutex.c windows-once.c \
+	windows-recmutex.c windows-rwlock.c wmemchr.c wmempcpy.c
+
+# Use this preprocessor expression to decide whether #include_next works.
+# Do not rely on a 'configure'-time test for this, since the expression
+# might appear in an installed header, which is used by some other compiler.
+HAVE_INCLUDE_NEXT = (__GNUC__ || __clang__ || 60000000 <= __DECC_VER)
+GPERF = gperf
+V_GPERF = $(V_GPERF_@AM_V@)
+V_GPERF_ = $(V_GPERF_@AM_DEFAULT_V@)
+V_GPERF_0 = @echo "  GPERF   " $@;
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
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+	-rm -f ./$(DEPDIR)/dup-safer-flag.Po
+	-rm -f ./$(DEPDIR)/dup-safer.Po
+	-rm -f ./$(DEPDIR)/dup.Po
+	-rm -f ./$(DEPDIR)/dup2.Po
+	-rm -f ./$(DEPDIR)/error.Po
+	-rm -f ./$(DEPDIR)/exclude.Po
+	-rm -f ./$(DEPDIR)/exitfail.Po
+	-rm -f ./$(DEPDIR)/fchdir.Po
+	-rm -f ./$(DEPDIR)/fcntl.Po
+	-rm -f ./$(DEPDIR)/fd-hook.Po
+	-rm -f ./$(DEPDIR)/fd-safer-flag.Po
+	-rm -f ./$(DEPDIR)/fd-safer.Po
+	-rm -f ./$(DEPDIR)/fdopendir.Po
+	-rm -f ./$(DEPDIR)/filenamecat-lgpl.Po
+	-rm -f ./$(DEPDIR)/fnmatch.Po
+	-rm -f ./$(DEPDIR)/fnmatch_loop.Po
+	-rm -f ./$(DEPDIR)/fopen.Po
+	-rm -f ./$(DEPDIR)/fpending.Po
+	-rm -f ./$(DEPDIR)/free.Po
+	-rm -f ./$(DEPDIR)/fstat.Po
+	-rm -f ./$(DEPDIR)/fstatat.Po
+	-rm -f ./$(DEPDIR)/fts-cycle.Po
+	-rm -f ./$(DEPDIR)/fts.Po
+	-rm -f ./$(DEPDIR)/getcwd-lgpl.Po
+	-rm -f ./$(DEPDIR)/getdtablesize.Po
+	-rm -f ./$(DEPDIR)/getopt.Po
+	-rm -f ./$(DEPDIR)/getopt1.Po
+	-rm -f ./$(DEPDIR)/getpagesize.Po
+	-rm -f ./$(DEPDIR)/getprogname.Po
+	-rm -f ./$(DEPDIR)/hard-locale.Po
+	-rm -f ./$(DEPDIR)/hash.Po
+	-rm -f ./$(DEPDIR)/i-ring.Po
+	-rm -f ./$(DEPDIR)/ialloc.Po
+	-rm -f ./$(DEPDIR)/iconv.Po
+	-rm -f ./$(DEPDIR)/iconv_close.Po
+	-rm -f ./$(DEPDIR)/iconv_open.Po
+	-rm -f ./$(DEPDIR)/isatty.Po
+	-rm -f ./$(DEPDIR)/isblank.Po
+	-rm -f ./$(DEPDIR)/iswblank.Po
+	-rm -f ./$(DEPDIR)/iswctype.Po
+	-rm -f ./$(DEPDIR)/iswdigit.Po
+	-rm -f ./$(DEPDIR)/iswxdigit.Po
+	-rm -f ./$(DEPDIR)/lc-charset-dispatch.Po
+	-rm -f ./$(DEPDIR)/localcharset.Po
+	-rm -f ./$(DEPDIR)/localeconv.Po
+	-rm -f ./$(DEPDIR)/localeinfo.Po
+	-rm -f ./$(DEPDIR)/lseek.Po
+	-rm -f ./$(DEPDIR)/lstat.Po
+	-rm -f ./$(DEPDIR)/malloc.Po
+	-rm -f ./$(DEPDIR)/malloca.Po
+	-rm -f ./$(DEPDIR)/mbchar.Po
+	-rm -f ./$(DEPDIR)/mbiter.Po
+	-rm -f ./$(DEPDIR)/mbrlen.Po
+	-rm -f ./$(DEPDIR)/mbrtowc.Po
+	-rm -f ./$(DEPDIR)/mbscasecmp.Po
+	-rm -f ./$(DEPDIR)/mbsinit.Po
+	-rm -f ./$(DEPDIR)/mbslen.Po
+	-rm -f ./$(DEPDIR)/mbsrtowcs-state.Po
+	-rm -f ./$(DEPDIR)/mbsrtowcs.Po
+	-rm -f ./$(DEPDIR)/mbsstr.Po
+	-rm -f ./$(DEPDIR)/mbtowc-lock.Po
+	-rm -f ./$(DEPDIR)/mbtowc.Po
+	-rm -f ./$(DEPDIR)/mbuiter.Po
+	-rm -f ./$(DEPDIR)/memchr.Po
+	-rm -f ./$(DEPDIR)/memchr2.Po
+	-rm -f ./$(DEPDIR)/mempcpy.Po
+	-rm -f ./$(DEPDIR)/memrchr.Po
+	-rm -f ./$(DEPDIR)/msvc-inval.Po
+	-rm -f ./$(DEPDIR)/msvc-nothrow.Po
+	-rm -f ./$(DEPDIR)/nl_langinfo-lock.Po
+	-rm -f ./$(DEPDIR)/nl_langinfo.Po
+	-rm -f ./$(DEPDIR)/obstack.Po
+	-rm -f ./$(DEPDIR)/open-safer.Po
+	-rm -f ./$(DEPDIR)/open.Po
+	-rm -f ./$(DEPDIR)/openat-die.Po
+	-rm -f ./$(DEPDIR)/openat-proc.Po
+	-rm -f ./$(DEPDIR)/openat-safer.Po
+	-rm -f ./$(DEPDIR)/openat.Po
+	-rm -f ./$(DEPDIR)/opendir.Po
+	-rm -f ./$(DEPDIR)/opendirat.Po
+	-rm -f ./$(DEPDIR)/pipe-safer.Po
+	-rm -f ./$(DEPDIR)/pipe.Po
+	-rm -f ./$(DEPDIR)/propername.Po
+	-rm -f ./$(DEPDIR)/quotearg.Po
+	-rm -f ./$(DEPDIR)/raise.Po
+	-rm -f ./$(DEPDIR)/rawmemchr.Po
+	-rm -f ./$(DEPDIR)/read.Po
+	-rm -f ./$(DEPDIR)/readdir.Po
+	-rm -f ./$(DEPDIR)/realloc.Po
+	-rm -f ./$(DEPDIR)/reallocarray.Po
+	-rm -f ./$(DEPDIR)/regcomp.Po
+	-rm -f ./$(DEPDIR)/regex.Po
+	-rm -f ./$(DEPDIR)/regex_internal.Po
+	-rm -f ./$(DEPDIR)/regexec.Po
+	-rm -f ./$(DEPDIR)/safe-read.Po
+	-rm -f ./$(DEPDIR)/save-cwd.Po
+	-rm -f ./$(DEPDIR)/setlocale-lock.Po
+	-rm -f ./$(DEPDIR)/setlocale_null.Po
+	-rm -f ./$(DEPDIR)/sigsegv.Po
+	-rm -f ./$(DEPDIR)/stackvma.Po
+	-rm -f ./$(DEPDIR)/stat-time.Po
+	-rm -f ./$(DEPDIR)/stat-w32.Po
+	-rm -f ./$(DEPDIR)/stat.Po
+	-rm -f ./$(DEPDIR)/stpcpy.Po
+	-rm -f ./$(DEPDIR)/strdup.Po
+	-rm -f ./$(DEPDIR)/strerror-override.Po
+	-rm -f ./$(DEPDIR)/strerror.Po
+	-rm -f ./$(DEPDIR)/striconv.Po
+	-rm -f ./$(DEPDIR)/stripslash.Po
+	-rm -f ./$(DEPDIR)/strnlen.Po
+	-rm -f ./$(DEPDIR)/strnlen1.Po
+	-rm -f ./$(DEPDIR)/strstr.Po
+	-rm -f ./$(DEPDIR)/strtoimax.Po
+	-rm -f ./$(DEPDIR)/strtol.Po
+	-rm -f ./$(DEPDIR)/strtoll.Po
+	-rm -f ./$(DEPDIR)/strtoul.Po
+	-rm -f ./$(DEPDIR)/strtoull.Po
+	-rm -f ./$(DEPDIR)/strtoumax.Po
+	-rm -f ./$(DEPDIR)/trim.Po
+	-rm -f ./$(DEPDIR)/unistd.Po
+	-rm -f ./$(DEPDIR)/version-etc-fsf.Po
+	-rm -f ./$(DEPDIR)/version-etc.Po
+	-rm -f ./$(DEPDIR)/wcrtomb.Po
+	-rm -f ./$(DEPDIR)/wctob.Po
+	-rm -f ./$(DEPDIR)/wctomb.Po
+	-rm -f ./$(DEPDIR)/wctype-h.Po
+	-rm -f ./$(DEPDIR)/wcwidth.Po
+	-rm -f ./$(DEPDIR)/windows-mutex.Po
+	-rm -f ./$(DEPDIR)/windows-once.Po
+	-rm -f ./$(DEPDIR)/windows-recmutex.Po
+	-rm -f ./$(DEPDIR)/windows-rwlock.Po
+	-rm -f ./$(DEPDIR)/wmemchr.Po
+	-rm -f ./$(DEPDIR)/wmempcpy.Po
+	-rm -f ./$(DEPDIR)/xalloc-die.Po
+	-rm -f ./$(DEPDIR)/xbinary-io.Po
+	-rm -f ./$(DEPDIR)/xmalloc.Po
+	-rm -f ./$(DEPDIR)/xstriconv.Po
+	-rm -f ./$(DEPDIR)/xstrtoimax.Po
+	-rm -f ./$(DEPDIR)/xstrtol.Po
+	-rm -f ./$(DEPDIR)/xstrtoul.Po
+	-rm -f glthread/$(DEPDIR)/lock.Po
+	-rm -f glthread/$(DEPDIR)/threadlib.Po
+	-rm -f malloc/$(DEPDIR)/dynarray-skeleton.Po
+	-rm -f malloc/$(DEPDIR)/dynarray_at_failure.Po
+	-rm -f malloc/$(DEPDIR)/dynarray_emplace_enlarge.Po
+	-rm -f malloc/$(DEPDIR)/dynarray_finalize.Po
+	-rm -f malloc/$(DEPDIR)/dynarray_resize.Po
+	-rm -f malloc/$(DEPDIR)/dynarray_resize_clear.Po
+	-rm -f unistr/$(DEPDIR)/u8-mbtoucr.Po
+	-rm -f unistr/$(DEPDIR)/u8-uctomb-aux.Po
+	-rm -f unistr/$(DEPDIR)/u8-uctomb.Po
+	-rm -f uniwidth/$(DEPDIR)/width.Po
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-local
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: all check install install-am install-exec install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-generic clean-noinstLIBRARIES cscopelist-am ctags \
+	ctags-am distclean distclean-compile distclean-generic \
+	distclean-local distclean-tags distdir dvi dvi-am html html-am \
+	info info-am install install-am install-data install-data-am \
+	install-dvi install-dvi-am install-exec install-exec-am \
+	install-html install-html-am install-info install-info-am \
+	install-man install-pdf install-pdf-am install-ps \
+	install-ps-am install-strip installcheck installcheck-am \
+	installdirs maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-compile mostlyclean-generic \
+	mostlyclean-local pdf pdf-am ps ps-am tags tags-am uninstall \
+	uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# We need the following in order to create <alloca.h> when the system
+# doesn't have one that works with the given compiler.
+@GL_GENERATE_ALLOCA_H_TRUE@alloca.h: alloca.in.h $(top_builddir)/config.status
+@GL_GENERATE_ALLOCA_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_ALLOCA_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+@GL_GENERATE_ALLOCA_H_TRUE@	  sed -e 's|@''HAVE_ALLOCA_H''@|$(HAVE_ALLOCA_H)|g' < $(srcdir)/alloca.in.h; \
+@GL_GENERATE_ALLOCA_H_TRUE@	} > $@-t && \
+@GL_GENERATE_ALLOCA_H_TRUE@	mv -f $@-t $@
+@GL_GENERATE_ALLOCA_H_FALSE@alloca.h: $(top_builddir)/config.status
+@GL_GENERATE_ALLOCA_H_FALSE@	rm -f $@
+
+# Listed in the same order as the GNU makefile conventions, and
+# provided by autoconf 2.59c+ or 2.70.
+# The Automake-defined pkg* macros are appended, in the order
+# listed in the Automake 1.10a+ documentation.
+configmake.h: Makefile
+	$(AM_V_GEN)rm -f $@-t && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  echo '#if HAVE_WINSOCK2_H'; \
+	  echo '# include <winsock2.h> /* avoid mingw pollution on DATADIR */'; \
+	  echo '#endif'; \
+	  echo '#define PREFIX "$(prefix)"'; \
+	  echo '#define EXEC_PREFIX "$(exec_prefix)"'; \
+	  echo '#define BINDIR "$(bindir)"'; \
+	  echo '#define SBINDIR "$(sbindir)"'; \
+	  echo '#define LIBEXECDIR "$(libexecdir)"'; \
+	  echo '#define DATAROOTDIR "$(datarootdir)"'; \
+	  echo '#define DATADIR "$(datadir)"'; \
+	  echo '#define SYSCONFDIR "$(sysconfdir)"'; \
+	  echo '#define SHAREDSTATEDIR "$(sharedstatedir)"'; \
+	  echo '#define LOCALSTATEDIR "$(localstatedir)"'; \
+	  echo '#define RUNSTATEDIR "$(runstatedir)"'; \
+	  echo '#define INCLUDEDIR "$(includedir)"'; \
+	  echo '#define OLDINCLUDEDIR "$(oldincludedir)"'; \
+	  echo '#define DOCDIR "$(docdir)"'; \
+	  echo '#define INFODIR "$(infodir)"'; \
+	  echo '#define HTMLDIR "$(htmldir)"'; \
+	  echo '#define DVIDIR "$(dvidir)"'; \
+	  echo '#define PDFDIR "$(pdfdir)"'; \
+	  echo '#define PSDIR "$(psdir)"'; \
+	  echo '#define LIBDIR "$(libdir)"'; \
+	  echo '#define LISPDIR "$(lispdir)"'; \
+	  echo '#define LOCALEDIR "$(localedir)"'; \
+	  echo '#define MANDIR "$(mandir)"'; \
+	  echo '#define MANEXT "$(manext)"'; \
+	  echo '#define PKGDATADIR "$(pkgdatadir)"'; \
+	  echo '#define PKGINCLUDEDIR "$(pkgincludedir)"'; \
+	  echo '#define PKGLIBDIR "$(pkglibdir)"'; \
+	  echo '#define PKGLIBEXECDIR "$(pkglibexecdir)"'; \
+	} | sed '/""/d' > $@-t && \
+	mv -f $@-t $@
+
+# We need the following in order to create <ctype.h> when the system
+# doesn't have one that works with the given compiler.
+ctype.h: ctype.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_CTYPE_H''@|$(NEXT_CTYPE_H)|g' \
+	      -e 's/@''GNULIB_ISBLANK''@/$(GL_GNULIB_ISBLANK)/g' \
+	      -e 's/@''HAVE_ISBLANK''@/$(HAVE_ISBLANK)/g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/ctype.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <dirent.h> when the system
+# doesn't have one that works with the given compiler.
+dirent.h: dirent.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_DIRENT_H''@|$(HAVE_DIRENT_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_DIRENT_H''@|$(NEXT_DIRENT_H)|g' \
+	      -e 's/@''GNULIB_OPENDIR''@/$(GL_GNULIB_OPENDIR)/g' \
+	      -e 's/@''GNULIB_READDIR''@/$(GL_GNULIB_READDIR)/g' \
+	      -e 's/@''GNULIB_REWINDDIR''@/$(GL_GNULIB_REWINDDIR)/g' \
+	      -e 's/@''GNULIB_CLOSEDIR''@/$(GL_GNULIB_CLOSEDIR)/g' \
+	      -e 's/@''GNULIB_DIRFD''@/$(GL_GNULIB_DIRFD)/g' \
+	      -e 's/@''GNULIB_FDOPENDIR''@/$(GL_GNULIB_FDOPENDIR)/g' \
+	      -e 's/@''GNULIB_SCANDIR''@/$(GL_GNULIB_SCANDIR)/g' \
+	      -e 's/@''GNULIB_ALPHASORT''@/$(GL_GNULIB_ALPHASORT)/g' \
+	      -e 's/@''HAVE_OPENDIR''@/$(HAVE_OPENDIR)/g' \
+	      -e 's/@''HAVE_READDIR''@/$(HAVE_READDIR)/g' \
+	      -e 's/@''HAVE_REWINDDIR''@/$(HAVE_REWINDDIR)/g' \
+	      -e 's/@''HAVE_CLOSEDIR''@/$(HAVE_CLOSEDIR)/g' \
+	      -e 's|@''HAVE_DECL_DIRFD''@|$(HAVE_DECL_DIRFD)|g' \
+	      -e 's|@''HAVE_DECL_FDOPENDIR''@|$(HAVE_DECL_FDOPENDIR)|g' \
+	      -e 's|@''HAVE_FDOPENDIR''@|$(HAVE_FDOPENDIR)|g' \
+	      -e 's|@''HAVE_SCANDIR''@|$(HAVE_SCANDIR)|g' \
+	      -e 's|@''HAVE_ALPHASORT''@|$(HAVE_ALPHASORT)|g' \
+	      -e 's|@''REPLACE_OPENDIR''@|$(REPLACE_OPENDIR)|g' \
+	      -e 's|@''REPLACE_CLOSEDIR''@|$(REPLACE_CLOSEDIR)|g' \
+	      -e 's|@''REPLACE_DIRFD''@|$(REPLACE_DIRFD)|g' \
+	      -e 's|@''REPLACE_FDOPENDIR''@|$(REPLACE_FDOPENDIR)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/dirent.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+malloc/dynarray.gl.h: malloc/dynarray.h
+	$(AM_V_at)$(MKDIR_P) malloc
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e '/libc_hidden_proto/d' < $(srcdir)/malloc/dynarray.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+malloc/dynarray-skeleton.gl.h: malloc/dynarray-skeleton.c
+	$(AM_V_at)$(MKDIR_P) malloc
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|<malloc/dynarray\.h>|<malloc/dynarray.gl.h>|g' \
+	      -e 's|__attribute_maybe_unused__|_GL_ATTRIBUTE_MAYBE_UNUSED|g' \
+	      -e 's|__attribute_nonnull__|_GL_ATTRIBUTE_NONNULL|g' \
+	      -e 's|__attribute_warn_unused_result__|_GL_ATTRIBUTE_NODISCARD|g' \
+	      -e 's|__glibc_likely|_GL_LIKELY|g' \
+	      -e 's|__glibc_unlikely|_GL_UNLIKELY|g' \
+	      < $(srcdir)/malloc/dynarray-skeleton.c; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <errno.h> when the system
+# doesn't have one that is POSIX compliant.
+@GL_GENERATE_ERRNO_H_TRUE@errno.h: errno.in.h $(top_builddir)/config.status
+@GL_GENERATE_ERRNO_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_ERRNO_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+@GL_GENERATE_ERRNO_H_TRUE@	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+@GL_GENERATE_ERRNO_H_TRUE@	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+@GL_GENERATE_ERRNO_H_TRUE@	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+@GL_GENERATE_ERRNO_H_TRUE@	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+@GL_GENERATE_ERRNO_H_TRUE@	      -e 's|@''NEXT_ERRNO_H''@|$(NEXT_ERRNO_H)|g' \
+@GL_GENERATE_ERRNO_H_TRUE@	      -e 's|@''EMULTIHOP_HIDDEN''@|$(EMULTIHOP_HIDDEN)|g' \
+@GL_GENERATE_ERRNO_H_TRUE@	      -e 's|@''EMULTIHOP_VALUE''@|$(EMULTIHOP_VALUE)|g' \
+@GL_GENERATE_ERRNO_H_TRUE@	      -e 's|@''ENOLINK_HIDDEN''@|$(ENOLINK_HIDDEN)|g' \
+@GL_GENERATE_ERRNO_H_TRUE@	      -e 's|@''ENOLINK_VALUE''@|$(ENOLINK_VALUE)|g' \
+@GL_GENERATE_ERRNO_H_TRUE@	      -e 's|@''EOVERFLOW_HIDDEN''@|$(EOVERFLOW_HIDDEN)|g' \
+@GL_GENERATE_ERRNO_H_TRUE@	      -e 's|@''EOVERFLOW_VALUE''@|$(EOVERFLOW_VALUE)|g' \
+@GL_GENERATE_ERRNO_H_TRUE@	      < $(srcdir)/errno.in.h; \
+@GL_GENERATE_ERRNO_H_TRUE@	} > $@-t && \
+@GL_GENERATE_ERRNO_H_TRUE@	mv $@-t $@
+@GL_GENERATE_ERRNO_H_FALSE@errno.h: $(top_builddir)/config.status
+@GL_GENERATE_ERRNO_H_FALSE@	rm -f $@
+
+# We need the following in order to create <fcntl.h> when the system
+# doesn't have one that works with the given compiler.
+fcntl.h: fcntl.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_FCNTL_H''@|$(NEXT_FCNTL_H)|g' \
+	      -e 's/@''GNULIB_CREAT''@/$(GL_GNULIB_CREAT)/g' \
+	      -e 's/@''GNULIB_FCNTL''@/$(GL_GNULIB_FCNTL)/g' \
+	      -e 's/@''GNULIB_NONBLOCKING''@/$(GL_GNULIB_NONBLOCKING)/g' \
+	      -e 's/@''GNULIB_OPEN''@/$(GL_GNULIB_OPEN)/g' \
+	      -e 's/@''GNULIB_OPENAT''@/$(GL_GNULIB_OPENAT)/g' \
+	      -e 's/@''GNULIB_MDA_CREAT''@/$(GL_GNULIB_MDA_CREAT)/g' \
+	      -e 's/@''GNULIB_MDA_OPEN''@/$(GL_GNULIB_MDA_OPEN)/g' \
+	      -e 's|@''HAVE_FCNTL''@|$(HAVE_FCNTL)|g' \
+	      -e 's|@''HAVE_OPENAT''@|$(HAVE_OPENAT)|g' \
+	      -e 's|@''REPLACE_CREAT''@|$(REPLACE_CREAT)|g' \
+	      -e 's|@''REPLACE_FCNTL''@|$(REPLACE_FCNTL)|g' \
+	      -e 's|@''REPLACE_OPEN''@|$(REPLACE_OPEN)|g' \
+	      -e 's|@''REPLACE_OPENAT''@|$(REPLACE_OPENAT)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/fcntl.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <fnmatch.h>.
+@GL_GENERATE_FNMATCH_H_TRUE@fnmatch.h: fnmatch.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+@GL_GENERATE_FNMATCH_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_FNMATCH_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+@GL_GENERATE_FNMATCH_H_TRUE@	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+@GL_GENERATE_FNMATCH_H_TRUE@	      -e 's|@''HAVE_FNMATCH_H''@|$(HAVE_FNMATCH_H)|g' \
+@GL_GENERATE_FNMATCH_H_TRUE@	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+@GL_GENERATE_FNMATCH_H_TRUE@	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+@GL_GENERATE_FNMATCH_H_TRUE@	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+@GL_GENERATE_FNMATCH_H_TRUE@	      -e 's|@''NEXT_FNMATCH_H''@|$(NEXT_FNMATCH_H)|g' \
+@GL_GENERATE_FNMATCH_H_TRUE@	      -e 's/@''GNULIB_FNMATCH''@/$(GL_GNULIB_FNMATCH)/g' \
+@GL_GENERATE_FNMATCH_H_TRUE@	      -e 's|@''HAVE_FNMATCH''@|$(HAVE_FNMATCH)|g' \
+@GL_GENERATE_FNMATCH_H_TRUE@	      -e 's|@''REPLACE_FNMATCH''@|$(REPLACE_FNMATCH)|g' \
+@GL_GENERATE_FNMATCH_H_TRUE@	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+@GL_GENERATE_FNMATCH_H_TRUE@	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+@GL_GENERATE_FNMATCH_H_TRUE@	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+@GL_GENERATE_FNMATCH_H_TRUE@	      < $(srcdir)/fnmatch.in.h; \
+@GL_GENERATE_FNMATCH_H_TRUE@	} > $@-t && \
+@GL_GENERATE_FNMATCH_H_TRUE@	mv $@-t $@
+@GL_GENERATE_FNMATCH_H_FALSE@fnmatch.h: $(top_builddir)/config.status
+@GL_GENERATE_FNMATCH_H_FALSE@	rm -f $@
+
+# We need the following in order to create <getopt.h> when the system
+# doesn't have one that works with the given compiler.
+getopt.h: getopt.in.h $(top_builddir)/config.status $(ARG_NONNULL_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_GETOPT_H''@|$(HAVE_GETOPT_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_GETOPT_H''@|$(NEXT_GETOPT_H)|g' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      < $(srcdir)/getopt.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+getopt-cdefs.h: getopt-cdefs.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+          sed -e 's|@''HAVE_SYS_CDEFS_H''@|$(HAVE_SYS_CDEFS_H)|g' \
+	      < $(srcdir)/getopt-cdefs.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+distclean-local: clean-GNUmakefile
+clean-GNUmakefile:
+	test '$(srcdir)' = . || rm -f $(top_builddir)/GNUmakefile
+
+# We need the following in order to create <iconv.h> when the system
+# doesn't have one that works with the given compiler.
+@GL_GENERATE_ICONV_H_TRUE@iconv.h: iconv.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+@GL_GENERATE_ICONV_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_ICONV_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+@GL_GENERATE_ICONV_H_TRUE@	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+@GL_GENERATE_ICONV_H_TRUE@	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+@GL_GENERATE_ICONV_H_TRUE@	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+@GL_GENERATE_ICONV_H_TRUE@	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+@GL_GENERATE_ICONV_H_TRUE@	      -e 's|@''NEXT_ICONV_H''@|$(NEXT_ICONV_H)|g' \
+@GL_GENERATE_ICONV_H_TRUE@	      -e 's/@''GNULIB_ICONV''@/$(GL_GNULIB_ICONV)/g' \
+@GL_GENERATE_ICONV_H_TRUE@	      -e 's|@''ICONV_CONST''@|$(ICONV_CONST)|g' \
+@GL_GENERATE_ICONV_H_TRUE@	      -e 's|@''REPLACE_ICONV''@|$(REPLACE_ICONV)|g' \
+@GL_GENERATE_ICONV_H_TRUE@	      -e 's|@''REPLACE_ICONV_OPEN''@|$(REPLACE_ICONV_OPEN)|g' \
+@GL_GENERATE_ICONV_H_TRUE@	      -e 's|@''REPLACE_ICONV_UTF''@|$(REPLACE_ICONV_UTF)|g' \
+@GL_GENERATE_ICONV_H_TRUE@	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+@GL_GENERATE_ICONV_H_TRUE@	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+@GL_GENERATE_ICONV_H_TRUE@	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+@GL_GENERATE_ICONV_H_TRUE@	      < $(srcdir)/iconv.in.h; \
+@GL_GENERATE_ICONV_H_TRUE@	} > $@-t && \
+@GL_GENERATE_ICONV_H_TRUE@	mv $@-t $@
+@GL_GENERATE_ICONV_H_FALSE@iconv.h: $(top_builddir)/config.status
+@GL_GENERATE_ICONV_H_FALSE@	rm -f $@
+
+$(srcdir)/iconv_open-aix.h: $(srcdir)/iconv_open-aix.gperf
+	$(V_GPERF)$(GPERF) -m 10 $(srcdir)/iconv_open-aix.gperf > $(srcdir)/iconv_open-aix.h-t && \
+	mv $(srcdir)/iconv_open-aix.h-t $(srcdir)/iconv_open-aix.h
+$(srcdir)/iconv_open-hpux.h: $(srcdir)/iconv_open-hpux.gperf
+	$(V_GPERF)$(GPERF) -m 10 $(srcdir)/iconv_open-hpux.gperf > $(srcdir)/iconv_open-hpux.h-t && \
+	mv $(srcdir)/iconv_open-hpux.h-t $(srcdir)/iconv_open-hpux.h
+$(srcdir)/iconv_open-irix.h: $(srcdir)/iconv_open-irix.gperf
+	$(V_GPERF)$(GPERF) -m 10 $(srcdir)/iconv_open-irix.gperf > $(srcdir)/iconv_open-irix.h-t && \
+	mv $(srcdir)/iconv_open-irix.h-t $(srcdir)/iconv_open-irix.h
+$(srcdir)/iconv_open-osf.h: $(srcdir)/iconv_open-osf.gperf
+	$(V_GPERF)$(GPERF) -m 10 $(srcdir)/iconv_open-osf.gperf > $(srcdir)/iconv_open-osf.h-t && \
+	mv $(srcdir)/iconv_open-osf.h-t $(srcdir)/iconv_open-osf.h
+$(srcdir)/iconv_open-solaris.h: $(srcdir)/iconv_open-solaris.gperf
+	$(V_GPERF)$(GPERF) -m 10 $(srcdir)/iconv_open-solaris.gperf > $(srcdir)/iconv_open-solaris.h-t && \
+	mv $(srcdir)/iconv_open-solaris.h-t $(srcdir)/iconv_open-solaris.h
+$(srcdir)/iconv_open-zos.h: $(srcdir)/iconv_open-zos.gperf
+	$(V_GPERF)$(GPERF) -m 10 $(srcdir)/iconv_open-zos.gperf > $(srcdir)/iconv_open-zos.h-t && \
+	mv $(srcdir)/iconv_open-zos.h-t $(srcdir)/iconv_open-zos.h
+
+# We need the following in order to create <inttypes.h> when the system
+# doesn't have one that works with the given compiler.
+inttypes.h: inttypes.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H) $(ARG_NONNULL_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's/@''HAVE_INTTYPES_H''@/$(HAVE_INTTYPES_H)/g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_INTTYPES_H''@|$(NEXT_INTTYPES_H)|g' \
+	      -e 's/@''APPLE_UNIVERSAL_BUILD''@/$(APPLE_UNIVERSAL_BUILD)/g' \
+	      -e 's/@''PRIPTR_PREFIX''@/$(PRIPTR_PREFIX)/g' \
+	      -e 's/@''GNULIB_IMAXABS''@/$(GL_GNULIB_IMAXABS)/g' \
+	      -e 's/@''GNULIB_IMAXDIV''@/$(GL_GNULIB_IMAXDIV)/g' \
+	      -e 's/@''GNULIB_STRTOIMAX''@/$(GL_GNULIB_STRTOIMAX)/g' \
+	      -e 's/@''GNULIB_STRTOUMAX''@/$(GL_GNULIB_STRTOUMAX)/g' \
+	      -e 's/@''HAVE_DECL_IMAXABS''@/$(HAVE_DECL_IMAXABS)/g' \
+	      -e 's/@''HAVE_DECL_IMAXDIV''@/$(HAVE_DECL_IMAXDIV)/g' \
+	      -e 's/@''HAVE_DECL_STRTOIMAX''@/$(HAVE_DECL_STRTOIMAX)/g' \
+	      -e 's/@''HAVE_DECL_STRTOUMAX''@/$(HAVE_DECL_STRTOUMAX)/g' \
+	      -e 's/@''HAVE_IMAXDIV_T''@/$(HAVE_IMAXDIV_T)/g' \
+	      -e 's/@''REPLACE_STRTOIMAX''@/$(REPLACE_STRTOIMAX)/g' \
+	      -e 's/@''REPLACE_STRTOUMAX''@/$(REPLACE_STRTOUMAX)/g' \
+	      -e 's/@''INT32_MAX_LT_INTMAX_MAX''@/$(INT32_MAX_LT_INTMAX_MAX)/g' \
+	      -e 's/@''INT64_MAX_EQ_LONG_MAX''@/$(INT64_MAX_EQ_LONG_MAX)/g' \
+	      -e 's/@''UINT32_MAX_LT_UINTMAX_MAX''@/$(UINT32_MAX_LT_UINTMAX_MAX)/g' \
+	      -e 's/@''UINT64_MAX_EQ_ULONG_MAX''@/$(UINT64_MAX_EQ_ULONG_MAX)/g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/inttypes.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create an empty placeholder for
+# <langinfo.h> when the system doesn't have one.
+langinfo.h: langinfo.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_LANGINFO_H''@|$(HAVE_LANGINFO_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_LANGINFO_H''@|$(NEXT_LANGINFO_H)|g' \
+	      -e 's/@''GNULIB_NL_LANGINFO''@/$(GL_GNULIB_NL_LANGINFO)/g' \
+	      -e 's|@''HAVE_LANGINFO_CODESET''@|$(HAVE_LANGINFO_CODESET)|g' \
+	      -e 's|@''HAVE_LANGINFO_T_FMT_AMPM''@|$(HAVE_LANGINFO_T_FMT_AMPM)|g' \
+	      -e 's|@''HAVE_LANGINFO_ALTMON''@|$(HAVE_LANGINFO_ALTMON)|g' \
+	      -e 's|@''HAVE_LANGINFO_ERA''@|$(HAVE_LANGINFO_ERA)|g' \
+	      -e 's|@''HAVE_LANGINFO_YESEXPR''@|$(HAVE_LANGINFO_YESEXPR)|g' \
+	      -e 's|@''HAVE_NL_LANGINFO''@|$(HAVE_NL_LANGINFO)|g' \
+	      -e 's|@''REPLACE_NL_LANGINFO''@|$(REPLACE_NL_LANGINFO)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/langinfo.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <limits.h> when the system
+# doesn't have one that is compatible with GNU.
+@GL_GENERATE_LIMITS_H_TRUE@limits.h: limits.in.h $(top_builddir)/config.status
+@GL_GENERATE_LIMITS_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_LIMITS_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+@GL_GENERATE_LIMITS_H_TRUE@	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+@GL_GENERATE_LIMITS_H_TRUE@	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+@GL_GENERATE_LIMITS_H_TRUE@	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+@GL_GENERATE_LIMITS_H_TRUE@	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+@GL_GENERATE_LIMITS_H_TRUE@	      -e 's|@''NEXT_LIMITS_H''@|$(NEXT_LIMITS_H)|g' \
+@GL_GENERATE_LIMITS_H_TRUE@	      < $(srcdir)/limits.in.h; \
+@GL_GENERATE_LIMITS_H_TRUE@	} > $@-t && \
+@GL_GENERATE_LIMITS_H_TRUE@	mv $@-t $@
+@GL_GENERATE_LIMITS_H_FALSE@limits.h: $(top_builddir)/config.status
+@GL_GENERATE_LIMITS_H_FALSE@	rm -f $@
+
+# We need the following in order to create <locale.h> when the system
+# doesn't have one that provides all definitions.
+locale.h: locale.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_LOCALE_H''@|$(NEXT_LOCALE_H)|g' \
+	      -e 's/@''GNULIB_LOCALECONV''@/$(GL_GNULIB_LOCALECONV)/g' \
+	      -e 's/@''GNULIB_SETLOCALE''@/$(GL_GNULIB_SETLOCALE)/g' \
+	      -e 's/@''GNULIB_SETLOCALE_NULL''@/$(GL_GNULIB_SETLOCALE_NULL)/g' \
+	      -e 's/@''GNULIB_DUPLOCALE''@/$(GL_GNULIB_DUPLOCALE)/g' \
+	      -e 's/@''GNULIB_LOCALENAME''@/$(GL_GNULIB_LOCALENAME)/g' \
+	      -e 's|@''HAVE_NEWLOCALE''@|$(HAVE_NEWLOCALE)|g' \
+	      -e 's|@''HAVE_DUPLOCALE''@|$(HAVE_DUPLOCALE)|g' \
+	      -e 's|@''HAVE_FREELOCALE''@|$(HAVE_FREELOCALE)|g' \
+	      -e 's|@''HAVE_XLOCALE_H''@|$(HAVE_XLOCALE_H)|g' \
+	      -e 's|@''REPLACE_LOCALECONV''@|$(REPLACE_LOCALECONV)|g' \
+	      -e 's|@''REPLACE_SETLOCALE''@|$(REPLACE_SETLOCALE)|g' \
+	      -e 's|@''REPLACE_NEWLOCALE''@|$(REPLACE_NEWLOCALE)|g' \
+	      -e 's|@''REPLACE_DUPLOCALE''@|$(REPLACE_DUPLOCALE)|g' \
+	      -e 's|@''REPLACE_FREELOCALE''@|$(REPLACE_FREELOCALE)|g' \
+	      -e 's|@''REPLACE_STRUCT_LCONV''@|$(REPLACE_STRUCT_LCONV)|g' \
+	      -e 's|@''LOCALENAME_ENHANCE_LOCALE_FUNCS''@|$(LOCALENAME_ENHANCE_LOCALE_FUNCS)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/locale.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <signal.h> when the system
+# doesn't have a complete one.
+signal.h: signal.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SIGNAL_H''@|$(NEXT_SIGNAL_H)|g' \
+	      -e 's/@''GNULIB_PTHREAD_SIGMASK''@/$(GL_GNULIB_PTHREAD_SIGMASK)/g' \
+	      -e 's/@''GNULIB_RAISE''@/$(GL_GNULIB_RAISE)/g' \
+	      -e 's/@''GNULIB_SIGNAL_H_SIGPIPE''@/$(GL_GNULIB_SIGNAL_H_SIGPIPE)/g' \
+	      -e 's/@''GNULIB_SIGPROCMASK''@/$(GL_GNULIB_SIGPROCMASK)/g' \
+	      -e 's/@''GNULIB_SIGACTION''@/$(GL_GNULIB_SIGACTION)/g' \
+	      -e 's|@''HAVE_POSIX_SIGNALBLOCKING''@|$(HAVE_POSIX_SIGNALBLOCKING)|g' \
+	      -e 's|@''HAVE_PTHREAD_SIGMASK''@|$(HAVE_PTHREAD_SIGMASK)|g' \
+	      -e 's|@''HAVE_RAISE''@|$(HAVE_RAISE)|g' \
+	      -e 's|@''HAVE_SIGSET_T''@|$(HAVE_SIGSET_T)|g' \
+	      -e 's|@''HAVE_SIGINFO_T''@|$(HAVE_SIGINFO_T)|g' \
+	      -e 's|@''HAVE_SIGACTION''@|$(HAVE_SIGACTION)|g' \
+	      -e 's|@''HAVE_STRUCT_SIGACTION_SA_SIGACTION''@|$(HAVE_STRUCT_SIGACTION_SA_SIGACTION)|g' \
+	      -e 's|@''HAVE_TYPE_VOLATILE_SIG_ATOMIC_T''@|$(HAVE_TYPE_VOLATILE_SIG_ATOMIC_T)|g' \
+	      -e 's|@''HAVE_SIGHANDLER_T''@|$(HAVE_SIGHANDLER_T)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SIGMASK''@|$(REPLACE_PTHREAD_SIGMASK)|g' \
+	      -e 's|@''REPLACE_RAISE''@|$(REPLACE_RAISE)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/signal.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+@GL_GENERATE_SIGSEGV_H_TRUE@sigsegv.h: sigsegv.in.h $(top_builddir)/config.status
+@GL_GENERATE_SIGSEGV_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_SIGSEGV_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+@GL_GENERATE_SIGSEGV_H_TRUE@	  cat $(srcdir)/sigsegv.in.h; \
+@GL_GENERATE_SIGSEGV_H_TRUE@	} > $@-t && \
+@GL_GENERATE_SIGSEGV_H_TRUE@	mv $@-t $@
+@GL_GENERATE_SIGSEGV_H_FALSE@sigsegv.h: $(top_builddir)/config.status
+@GL_GENERATE_SIGSEGV_H_FALSE@	rm -f $@
+
+# We need the following in order to create <stdalign.h> when the system
+# doesn't have one that works.
+@GL_GENERATE_STDALIGN_H_TRUE@stdalign.h: stdalign.in.h $(top_builddir)/config.status
+@GL_GENERATE_STDALIGN_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_STDALIGN_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+@GL_GENERATE_STDALIGN_H_TRUE@	  cat $(srcdir)/stdalign.in.h; \
+@GL_GENERATE_STDALIGN_H_TRUE@	} > $@-t && \
+@GL_GENERATE_STDALIGN_H_TRUE@	mv $@-t $@
+@GL_GENERATE_STDALIGN_H_FALSE@stdalign.h: $(top_builddir)/config.status
+@GL_GENERATE_STDALIGN_H_FALSE@	rm -f $@
+
+# We need the following in order to create <stdarg.h> when the system
+# doesn't have one that works with the given compiler.
+@GL_GENERATE_STDARG_H_TRUE@stdarg.h: stdarg.in.h $(top_builddir)/config.status
+@GL_GENERATE_STDARG_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_STDARG_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+@GL_GENERATE_STDARG_H_TRUE@	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+@GL_GENERATE_STDARG_H_TRUE@	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+@GL_GENERATE_STDARG_H_TRUE@	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+@GL_GENERATE_STDARG_H_TRUE@	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+@GL_GENERATE_STDARG_H_TRUE@	      -e 's|@''NEXT_STDARG_H''@|$(NEXT_STDARG_H)|g' \
+@GL_GENERATE_STDARG_H_TRUE@	      < $(srcdir)/stdarg.in.h; \
+@GL_GENERATE_STDARG_H_TRUE@	} > $@-t && \
+@GL_GENERATE_STDARG_H_TRUE@	mv $@-t $@
+@GL_GENERATE_STDARG_H_FALSE@stdarg.h: $(top_builddir)/config.status
+@GL_GENERATE_STDARG_H_FALSE@	rm -f $@
+
+# We need the following in order to create <stdbool.h> when the system
+# doesn't have one that works.
+@GL_GENERATE_STDBOOL_H_TRUE@stdbool.h: stdbool.in.h $(top_builddir)/config.status
+@GL_GENERATE_STDBOOL_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_STDBOOL_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+@GL_GENERATE_STDBOOL_H_TRUE@	  sed -e 's/@''HAVE__BOOL''@/$(HAVE__BOOL)/g' < $(srcdir)/stdbool.in.h; \
+@GL_GENERATE_STDBOOL_H_TRUE@	} > $@-t && \
+@GL_GENERATE_STDBOOL_H_TRUE@	mv $@-t $@
+@GL_GENERATE_STDBOOL_H_FALSE@stdbool.h: $(top_builddir)/config.status
+@GL_GENERATE_STDBOOL_H_FALSE@	rm -f $@
+
+# We need the following in order to create <stddef.h> when the system
+# doesn't have one that works with the given compiler.
+@GL_GENERATE_STDDEF_H_TRUE@stddef.h: stddef.in.h $(top_builddir)/config.status
+@GL_GENERATE_STDDEF_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_STDDEF_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+@GL_GENERATE_STDDEF_H_TRUE@	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+@GL_GENERATE_STDDEF_H_TRUE@	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+@GL_GENERATE_STDDEF_H_TRUE@	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+@GL_GENERATE_STDDEF_H_TRUE@	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+@GL_GENERATE_STDDEF_H_TRUE@	      -e 's|@''NEXT_STDDEF_H''@|$(NEXT_STDDEF_H)|g' \
+@GL_GENERATE_STDDEF_H_TRUE@	      -e 's|@''HAVE_MAX_ALIGN_T''@|$(HAVE_MAX_ALIGN_T)|g' \
+@GL_GENERATE_STDDEF_H_TRUE@	      -e 's|@''HAVE_WCHAR_T''@|$(HAVE_WCHAR_T)|g' \
+@GL_GENERATE_STDDEF_H_TRUE@	      -e 's|@''REPLACE_NULL''@|$(REPLACE_NULL)|g' \
+@GL_GENERATE_STDDEF_H_TRUE@	      < $(srcdir)/stddef.in.h; \
+@GL_GENERATE_STDDEF_H_TRUE@	} > $@-t && \
+@GL_GENERATE_STDDEF_H_TRUE@	mv $@-t $@
+@GL_GENERATE_STDDEF_H_FALSE@stddef.h: $(top_builddir)/config.status
+@GL_GENERATE_STDDEF_H_FALSE@	rm -f $@
+
+# We need the following in order to create <stdint.h> when the system
+# doesn't have one that works with the given compiler.
+@GL_GENERATE_STDINT_H_TRUE@stdint.h: stdint.in.h $(top_builddir)/config.status
+@GL_GENERATE_STDINT_H_TRUE@	$(AM_V_GEN)rm -f $@-t $@ && \
+@GL_GENERATE_STDINT_H_TRUE@	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+@GL_GENERATE_STDINT_H_TRUE@	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''HAVE_STDINT_H''@/$(HAVE_STDINT_H)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's|@''NEXT_STDINT_H''@|$(NEXT_STDINT_H)|g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''HAVE_C99_STDINT_H''@/$(HAVE_C99_STDINT_H)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''HAVE_SYS_TYPES_H''@/$(HAVE_SYS_TYPES_H)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''HAVE_INTTYPES_H''@/$(HAVE_INTTYPES_H)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''HAVE_SYS_INTTYPES_H''@/$(HAVE_SYS_INTTYPES_H)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''HAVE_SYS_BITYPES_H''@/$(HAVE_SYS_BITYPES_H)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''HAVE_WCHAR_H''@/$(HAVE_WCHAR_H)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''APPLE_UNIVERSAL_BUILD''@/$(APPLE_UNIVERSAL_BUILD)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''BITSIZEOF_PTRDIFF_T''@/$(BITSIZEOF_PTRDIFF_T)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''PTRDIFF_T_SUFFIX''@/$(PTRDIFF_T_SUFFIX)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''BITSIZEOF_SIG_ATOMIC_T''@/$(BITSIZEOF_SIG_ATOMIC_T)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''HAVE_SIGNED_SIG_ATOMIC_T''@/$(HAVE_SIGNED_SIG_ATOMIC_T)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''SIG_ATOMIC_T_SUFFIX''@/$(SIG_ATOMIC_T_SUFFIX)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''BITSIZEOF_SIZE_T''@/$(BITSIZEOF_SIZE_T)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''SIZE_T_SUFFIX''@/$(SIZE_T_SUFFIX)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''BITSIZEOF_WCHAR_T''@/$(BITSIZEOF_WCHAR_T)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''HAVE_SIGNED_WCHAR_T''@/$(HAVE_SIGNED_WCHAR_T)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''WCHAR_T_SUFFIX''@/$(WCHAR_T_SUFFIX)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''BITSIZEOF_WINT_T''@/$(BITSIZEOF_WINT_T)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''HAVE_SIGNED_WINT_T''@/$(HAVE_SIGNED_WINT_T)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''WINT_T_SUFFIX''@/$(WINT_T_SUFFIX)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      -e 's/@''GNULIBHEADERS_OVERRIDE_WINT_T''@/$(GNULIBHEADERS_OVERRIDE_WINT_T)/g' \
+@GL_GENERATE_STDINT_H_TRUE@	      < $(srcdir)/stdint.in.h; \
+@GL_GENERATE_STDINT_H_TRUE@	} > $@-t && \
+@GL_GENERATE_STDINT_H_TRUE@	mv $@-t $@
+@GL_GENERATE_STDINT_H_FALSE@stdint.h: $(top_builddir)/config.status
+@GL_GENERATE_STDINT_H_FALSE@	rm -f $@
+
+# We need the following in order to create <stdio.h> when the system
+# doesn't have one that works with the given compiler.
+stdio.h: stdio.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_STDIO_H''@|$(NEXT_STDIO_H)|g' \
+	      -e 's/@''GNULIB_DPRINTF''@/$(GL_GNULIB_DPRINTF)/g' \
+	      -e 's/@''GNULIB_FCLOSE''@/$(GL_GNULIB_FCLOSE)/g' \
+	      -e 's/@''GNULIB_FDOPEN''@/$(GL_GNULIB_FDOPEN)/g' \
+	      -e 's/@''GNULIB_FFLUSH''@/$(GL_GNULIB_FFLUSH)/g' \
+	      -e 's/@''GNULIB_FGETC''@/$(GL_GNULIB_FGETC)/g' \
+	      -e 's/@''GNULIB_FGETS''@/$(GL_GNULIB_FGETS)/g' \
+	      -e 's/@''GNULIB_FOPEN''@/$(GL_GNULIB_FOPEN)/g' \
+	      -e 's/@''GNULIB_FPRINTF''@/$(GL_GNULIB_FPRINTF)/g' \
+	      -e 's/@''GNULIB_FPRINTF_POSIX''@/$(GL_GNULIB_FPRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_FPURGE''@/$(GL_GNULIB_FPURGE)/g' \
+	      -e 's/@''GNULIB_FPUTC''@/$(GL_GNULIB_FPUTC)/g' \
+	      -e 's/@''GNULIB_FPUTS''@/$(GL_GNULIB_FPUTS)/g' \
+	      -e 's/@''GNULIB_FREAD''@/$(GL_GNULIB_FREAD)/g' \
+	      -e 's/@''GNULIB_FREOPEN''@/$(GL_GNULIB_FREOPEN)/g' \
+	      -e 's/@''GNULIB_FSCANF''@/$(GL_GNULIB_FSCANF)/g' \
+	      -e 's/@''GNULIB_FSEEK''@/$(GL_GNULIB_FSEEK)/g' \
+	      -e 's/@''GNULIB_FSEEKO''@/$(GL_GNULIB_FSEEKO)/g' \
+	      -e 's/@''GNULIB_FTELL''@/$(GL_GNULIB_FTELL)/g' \
+	      -e 's/@''GNULIB_FTELLO''@/$(GL_GNULIB_FTELLO)/g' \
+	      -e 's/@''GNULIB_FWRITE''@/$(GL_GNULIB_FWRITE)/g' \
+	      -e 's/@''GNULIB_GETC''@/$(GL_GNULIB_GETC)/g' \
+	      -e 's/@''GNULIB_GETCHAR''@/$(GL_GNULIB_GETCHAR)/g' \
+	      -e 's/@''GNULIB_GETDELIM''@/$(GL_GNULIB_GETDELIM)/g' \
+	      -e 's/@''GNULIB_GETLINE''@/$(GL_GNULIB_GETLINE)/g' \
+	      -e 's/@''GNULIB_OBSTACK_PRINTF''@/$(GL_GNULIB_OBSTACK_PRINTF)/g' \
+	      -e 's/@''GNULIB_OBSTACK_PRINTF_POSIX''@/$(GL_GNULIB_OBSTACK_PRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_PCLOSE''@/$(GL_GNULIB_PCLOSE)/g' \
+	      -e 's/@''GNULIB_PERROR''@/$(GL_GNULIB_PERROR)/g' \
+	      -e 's/@''GNULIB_POPEN''@/$(GL_GNULIB_POPEN)/g' \
+	      -e 's/@''GNULIB_PRINTF''@/$(GL_GNULIB_PRINTF)/g' \
+	      -e 's/@''GNULIB_PRINTF_POSIX''@/$(GL_GNULIB_PRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_PUTC''@/$(GL_GNULIB_PUTC)/g' \
+	      -e 's/@''GNULIB_PUTCHAR''@/$(GL_GNULIB_PUTCHAR)/g' \
+	      -e 's/@''GNULIB_PUTS''@/$(GL_GNULIB_PUTS)/g' \
+	      -e 's/@''GNULIB_REMOVE''@/$(GL_GNULIB_REMOVE)/g' \
+	      -e 's/@''GNULIB_RENAME''@/$(GL_GNULIB_RENAME)/g' \
+	      -e 's/@''GNULIB_RENAMEAT''@/$(GL_GNULIB_RENAMEAT)/g' \
+	      -e 's/@''GNULIB_SCANF''@/$(GL_GNULIB_SCANF)/g' \
+	      -e 's/@''GNULIB_SNPRINTF''@/$(GL_GNULIB_SNPRINTF)/g' \
+	      -e 's/@''GNULIB_SPRINTF_POSIX''@/$(GL_GNULIB_SPRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_STDIO_H_NONBLOCKING''@/$(GL_GNULIB_STDIO_H_NONBLOCKING)/g' \
+	      -e 's/@''GNULIB_STDIO_H_SIGPIPE''@/$(GL_GNULIB_STDIO_H_SIGPIPE)/g' \
+	      -e 's/@''GNULIB_TMPFILE''@/$(GL_GNULIB_TMPFILE)/g' \
+	      -e 's/@''GNULIB_VASPRINTF''@/$(GL_GNULIB_VASPRINTF)/g' \
+	      -e 's/@''GNULIB_VDPRINTF''@/$(GL_GNULIB_VDPRINTF)/g' \
+	      -e 's/@''GNULIB_VFPRINTF''@/$(GL_GNULIB_VFPRINTF)/g' \
+	      -e 's/@''GNULIB_VFPRINTF_POSIX''@/$(GL_GNULIB_VFPRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_VFSCANF''@/$(GL_GNULIB_VFSCANF)/g' \
+	      -e 's/@''GNULIB_VSCANF''@/$(GL_GNULIB_VSCANF)/g' \
+	      -e 's/@''GNULIB_VPRINTF''@/$(GL_GNULIB_VPRINTF)/g' \
+	      -e 's/@''GNULIB_VPRINTF_POSIX''@/$(GL_GNULIB_VPRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_VSNPRINTF''@/$(GL_GNULIB_VSNPRINTF)/g' \
+	      -e 's/@''GNULIB_VSPRINTF_POSIX''@/$(GL_GNULIB_VSPRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_MDA_FCLOSEALL''@/$(GL_GNULIB_MDA_FCLOSEALL)/g' \
+	      -e 's/@''GNULIB_MDA_FDOPEN''@/$(GL_GNULIB_MDA_FDOPEN)/g' \
+	      -e 's/@''GNULIB_MDA_FILENO''@/$(GL_GNULIB_MDA_FILENO)/g' \
+	      -e 's/@''GNULIB_MDA_GETW''@/$(GL_GNULIB_MDA_GETW)/g' \
+	      -e 's/@''GNULIB_MDA_PUTW''@/$(GL_GNULIB_MDA_PUTW)/g' \
+	      -e 's/@''GNULIB_MDA_TEMPNAM''@/$(GL_GNULIB_MDA_TEMPNAM)/g' \
+	      < $(srcdir)/stdio.in.h | \
+	  sed -e 's|@''HAVE_DECL_FCLOSEALL''@|$(HAVE_DECL_FCLOSEALL)|g' \
+	      -e 's|@''HAVE_DECL_FPURGE''@|$(HAVE_DECL_FPURGE)|g' \
+	      -e 's|@''HAVE_DECL_FSEEKO''@|$(HAVE_DECL_FSEEKO)|g' \
+	      -e 's|@''HAVE_DECL_FTELLO''@|$(HAVE_DECL_FTELLO)|g' \
+	      -e 's|@''HAVE_DECL_GETDELIM''@|$(HAVE_DECL_GETDELIM)|g' \
+	      -e 's|@''HAVE_DECL_GETLINE''@|$(HAVE_DECL_GETLINE)|g' \
+	      -e 's|@''HAVE_DECL_OBSTACK_PRINTF''@|$(HAVE_DECL_OBSTACK_PRINTF)|g' \
+	      -e 's|@''HAVE_DECL_SNPRINTF''@|$(HAVE_DECL_SNPRINTF)|g' \
+	      -e 's|@''HAVE_DECL_VSNPRINTF''@|$(HAVE_DECL_VSNPRINTF)|g' \
+	      -e 's|@''HAVE_DPRINTF''@|$(HAVE_DPRINTF)|g' \
+	      -e 's|@''HAVE_FSEEKO''@|$(HAVE_FSEEKO)|g' \
+	      -e 's|@''HAVE_FTELLO''@|$(HAVE_FTELLO)|g' \
+	      -e 's|@''HAVE_PCLOSE''@|$(HAVE_PCLOSE)|g' \
+	      -e 's|@''HAVE_POPEN''@|$(HAVE_POPEN)|g' \
+	      -e 's|@''HAVE_RENAMEAT''@|$(HAVE_RENAMEAT)|g' \
+	      -e 's|@''HAVE_VASPRINTF''@|$(HAVE_VASPRINTF)|g' \
+	      -e 's|@''HAVE_VDPRINTF''@|$(HAVE_VDPRINTF)|g' \
+	      -e 's|@''REPLACE_DPRINTF''@|$(REPLACE_DPRINTF)|g' \
+	      -e 's|@''REPLACE_FCLOSE''@|$(REPLACE_FCLOSE)|g' \
+	      -e 's|@''REPLACE_FDOPEN''@|$(REPLACE_FDOPEN)|g' \
+	      -e 's|@''REPLACE_FFLUSH''@|$(REPLACE_FFLUSH)|g' \
+	      -e 's|@''REPLACE_FOPEN''@|$(REPLACE_FOPEN)|g' \
+	      -e 's|@''REPLACE_FPRINTF''@|$(REPLACE_FPRINTF)|g' \
+	      -e 's|@''REPLACE_FPURGE''@|$(REPLACE_FPURGE)|g' \
+	      -e 's|@''REPLACE_FREOPEN''@|$(REPLACE_FREOPEN)|g' \
+	      -e 's|@''REPLACE_FSEEK''@|$(REPLACE_FSEEK)|g' \
+	      -e 's|@''REPLACE_FSEEKO''@|$(REPLACE_FSEEKO)|g' \
+	      -e 's|@''REPLACE_FTELL''@|$(REPLACE_FTELL)|g' \
+	      -e 's|@''REPLACE_FTELLO''@|$(REPLACE_FTELLO)|g' \
+	      -e 's|@''REPLACE_GETDELIM''@|$(REPLACE_GETDELIM)|g' \
+	      -e 's|@''REPLACE_GETLINE''@|$(REPLACE_GETLINE)|g' \
+	      -e 's|@''REPLACE_OBSTACK_PRINTF''@|$(REPLACE_OBSTACK_PRINTF)|g' \
+	      -e 's|@''REPLACE_PERROR''@|$(REPLACE_PERROR)|g' \
+	      -e 's|@''REPLACE_POPEN''@|$(REPLACE_POPEN)|g' \
+	      -e 's|@''REPLACE_PRINTF''@|$(REPLACE_PRINTF)|g' \
+	      -e 's|@''REPLACE_REMOVE''@|$(REPLACE_REMOVE)|g' \
+	      -e 's|@''REPLACE_RENAME''@|$(REPLACE_RENAME)|g' \
+	      -e 's|@''REPLACE_RENAMEAT''@|$(REPLACE_RENAMEAT)|g' \
+	      -e 's|@''REPLACE_SNPRINTF''@|$(REPLACE_SNPRINTF)|g' \
+	      -e 's|@''REPLACE_SPRINTF''@|$(REPLACE_SPRINTF)|g' \
+	      -e 's|@''REPLACE_STDIO_READ_FUNCS''@|$(REPLACE_STDIO_READ_FUNCS)|g' \
+	      -e 's|@''REPLACE_STDIO_WRITE_FUNCS''@|$(REPLACE_STDIO_WRITE_FUNCS)|g' \
+	      -e 's|@''REPLACE_TMPFILE''@|$(REPLACE_TMPFILE)|g' \
+	      -e 's|@''REPLACE_VASPRINTF''@|$(REPLACE_VASPRINTF)|g' \
+	      -e 's|@''REPLACE_VDPRINTF''@|$(REPLACE_VDPRINTF)|g' \
+	      -e 's|@''REPLACE_VFPRINTF''@|$(REPLACE_VFPRINTF)|g' \
+	      -e 's|@''REPLACE_VPRINTF''@|$(REPLACE_VPRINTF)|g' \
+	      -e 's|@''REPLACE_VSNPRINTF''@|$(REPLACE_VSNPRINTF)|g' \
+	      -e 's|@''REPLACE_VSPRINTF''@|$(REPLACE_VSPRINTF)|g' \
+	      -e 's|@''ASM_SYMBOL_PREFIX''@|$(ASM_SYMBOL_PREFIX)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <stdlib.h> when the system
+# doesn't have one that works with the given compiler.
+stdlib.h: stdlib.in.h $(top_builddir)/config.status $(CXXDEFS_H) \
+  $(_NORETURN_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_STDLIB_H''@|$(NEXT_STDLIB_H)|g' \
+	      -e 's/@''GNULIB__EXIT''@/$(GL_GNULIB__EXIT)/g' \
+	      -e 's/@''GNULIB_ALIGNED_ALLOC''@/$(GL_GNULIB_ALIGNED_ALLOC)/g' \
+	      -e 's/@''GNULIB_ATOLL''@/$(GL_GNULIB_ATOLL)/g' \
+	      -e 's/@''GNULIB_CALLOC_POSIX''@/$(GL_GNULIB_CALLOC_POSIX)/g' \
+	      -e 's/@''GNULIB_CANONICALIZE_FILE_NAME''@/$(GL_GNULIB_CANONICALIZE_FILE_NAME)/g' \
+	      -e 's/@''GNULIB_FREE_POSIX''@/$(GL_GNULIB_FREE_POSIX)/g' \
+	      -e 's/@''GNULIB_GETLOADAVG''@/$(GL_GNULIB_GETLOADAVG)/g' \
+	      -e 's/@''GNULIB_GETSUBOPT''@/$(GL_GNULIB_GETSUBOPT)/g' \
+	      -e 's/@''GNULIB_GRANTPT''@/$(GL_GNULIB_GRANTPT)/g' \
+	      -e 's/@''GNULIB_MALLOC_POSIX''@/$(GL_GNULIB_MALLOC_POSIX)/g' \
+	      -e 's/@''GNULIB_MBTOWC''@/$(GL_GNULIB_MBTOWC)/g' \
+	      -e 's/@''GNULIB_MKDTEMP''@/$(GL_GNULIB_MKDTEMP)/g' \
+	      -e 's/@''GNULIB_MKOSTEMP''@/$(GL_GNULIB_MKOSTEMP)/g' \
+	      -e 's/@''GNULIB_MKOSTEMPS''@/$(GL_GNULIB_MKOSTEMPS)/g' \
+	      -e 's/@''GNULIB_MKSTEMP''@/$(GL_GNULIB_MKSTEMP)/g' \
+	      -e 's/@''GNULIB_MKSTEMPS''@/$(GL_GNULIB_MKSTEMPS)/g' \
+	      -e 's/@''GNULIB_POSIX_MEMALIGN''@/$(GL_GNULIB_POSIX_MEMALIGN)/g' \
+	      -e 's/@''GNULIB_POSIX_OPENPT''@/$(GL_GNULIB_POSIX_OPENPT)/g' \
+	      -e 's/@''GNULIB_PTSNAME''@/$(GL_GNULIB_PTSNAME)/g' \
+	      -e 's/@''GNULIB_PTSNAME_R''@/$(GL_GNULIB_PTSNAME_R)/g' \
+	      -e 's/@''GNULIB_PUTENV''@/$(GL_GNULIB_PUTENV)/g' \
+	      -e 's/@''GNULIB_QSORT_R''@/$(GL_GNULIB_QSORT_R)/g' \
+	      -e 's/@''GNULIB_RANDOM''@/$(GL_GNULIB_RANDOM)/g' \
+	      -e 's/@''GNULIB_RANDOM_R''@/$(GL_GNULIB_RANDOM_R)/g' \
+	      -e 's/@''GNULIB_REALLOC_POSIX''@/$(GL_GNULIB_REALLOC_POSIX)/g' \
+	      -e 's/@''GNULIB_REALLOCARRAY''@/$(GL_GNULIB_REALLOCARRAY)/g' \
+	      -e 's/@''GNULIB_REALPATH''@/$(GL_GNULIB_REALPATH)/g' \
+	      -e 's/@''GNULIB_RPMATCH''@/$(GL_GNULIB_RPMATCH)/g' \
+	      -e 's/@''GNULIB_SECURE_GETENV''@/$(GL_GNULIB_SECURE_GETENV)/g' \
+	      -e 's/@''GNULIB_SETENV''@/$(GL_GNULIB_SETENV)/g' \
+	      -e 's/@''GNULIB_STRTOD''@/$(GL_GNULIB_STRTOD)/g' \
+	      -e 's/@''GNULIB_STRTOL''@/$(GL_GNULIB_STRTOL)/g' \
+	      -e 's/@''GNULIB_STRTOLD''@/$(GL_GNULIB_STRTOLD)/g' \
+	      -e 's/@''GNULIB_STRTOLL''@/$(GL_GNULIB_STRTOLL)/g' \
+	      -e 's/@''GNULIB_STRTOUL''@/$(GL_GNULIB_STRTOUL)/g' \
+	      -e 's/@''GNULIB_STRTOULL''@/$(GL_GNULIB_STRTOULL)/g' \
+	      -e 's/@''GNULIB_SYSTEM_POSIX''@/$(GL_GNULIB_SYSTEM_POSIX)/g' \
+	      -e 's/@''GNULIB_UNLOCKPT''@/$(GL_GNULIB_UNLOCKPT)/g' \
+	      -e 's/@''GNULIB_UNSETENV''@/$(GL_GNULIB_UNSETENV)/g' \
+	      -e 's/@''GNULIB_WCTOMB''@/$(GL_GNULIB_WCTOMB)/g' \
+	      -e 's/@''GNULIB_MDA_ECVT''@/$(GL_GNULIB_MDA_ECVT)/g' \
+	      -e 's/@''GNULIB_MDA_FCVT''@/$(GL_GNULIB_MDA_FCVT)/g' \
+	      -e 's/@''GNULIB_MDA_GCVT''@/$(GL_GNULIB_MDA_GCVT)/g' \
+	      -e 's/@''GNULIB_MDA_MKTEMP''@/$(GL_GNULIB_MDA_MKTEMP)/g' \
+	      -e 's/@''GNULIB_MDA_PUTENV''@/$(GL_GNULIB_MDA_PUTENV)/g' \
+	      < $(srcdir)/stdlib.in.h | \
+	  sed -e 's|@''HAVE__EXIT''@|$(HAVE__EXIT)|g' \
+	      -e 's|@''HAVE_ALIGNED_ALLOC''@|$(HAVE_ALIGNED_ALLOC)|g' \
+	      -e 's|@''HAVE_ATOLL''@|$(HAVE_ATOLL)|g' \
+	      -e 's|@''HAVE_CANONICALIZE_FILE_NAME''@|$(HAVE_CANONICALIZE_FILE_NAME)|g' \
+	      -e 's|@''HAVE_DECL_ECVT''@|$(HAVE_DECL_ECVT)|g' \
+	      -e 's|@''HAVE_DECL_FCVT''@|$(HAVE_DECL_FCVT)|g' \
+	      -e 's|@''HAVE_DECL_GCVT''@|$(HAVE_DECL_GCVT)|g' \
+	      -e 's|@''HAVE_DECL_GETLOADAVG''@|$(HAVE_DECL_GETLOADAVG)|g' \
+	      -e 's|@''HAVE_GETSUBOPT''@|$(HAVE_GETSUBOPT)|g' \
+	      -e 's|@''HAVE_GRANTPT''@|$(HAVE_GRANTPT)|g' \
+	      -e 's|@''HAVE_INITSTATE''@|$(HAVE_INITSTATE)|g' \
+	      -e 's|@''HAVE_DECL_INITSTATE''@|$(HAVE_DECL_INITSTATE)|g' \
+	      -e 's|@''HAVE_MBTOWC''@|$(HAVE_MBTOWC)|g' \
+	      -e 's|@''HAVE_MKDTEMP''@|$(HAVE_MKDTEMP)|g' \
+	      -e 's|@''HAVE_MKOSTEMP''@|$(HAVE_MKOSTEMP)|g' \
+	      -e 's|@''HAVE_MKOSTEMPS''@|$(HAVE_MKOSTEMPS)|g' \
+	      -e 's|@''HAVE_MKSTEMP''@|$(HAVE_MKSTEMP)|g' \
+	      -e 's|@''HAVE_MKSTEMPS''@|$(HAVE_MKSTEMPS)|g' \
+	      -e 's|@''HAVE_POSIX_MEMALIGN''@|$(HAVE_POSIX_MEMALIGN)|g' \
+	      -e 's|@''HAVE_POSIX_OPENPT''@|$(HAVE_POSIX_OPENPT)|g' \
+	      -e 's|@''HAVE_PTSNAME''@|$(HAVE_PTSNAME)|g' \
+	      -e 's|@''HAVE_PTSNAME_R''@|$(HAVE_PTSNAME_R)|g' \
+	      -e 's|@''HAVE_QSORT_R''@|$(HAVE_QSORT_R)|g' \
+	      -e 's|@''HAVE_RANDOM''@|$(HAVE_RANDOM)|g' \
+	      -e 's|@''HAVE_RANDOM_H''@|$(HAVE_RANDOM_H)|g' \
+	      -e 's|@''HAVE_RANDOM_R''@|$(HAVE_RANDOM_R)|g' \
+	      -e 's|@''HAVE_REALLOCARRAY''@|$(HAVE_REALLOCARRAY)|g' \
+	      -e 's|@''HAVE_REALPATH''@|$(HAVE_REALPATH)|g' \
+	      -e 's|@''HAVE_RPMATCH''@|$(HAVE_RPMATCH)|g' \
+	      -e 's|@''HAVE_SECURE_GETENV''@|$(HAVE_SECURE_GETENV)|g' \
+	      -e 's|@''HAVE_DECL_SETENV''@|$(HAVE_DECL_SETENV)|g' \
+	      -e 's|@''HAVE_SETSTATE''@|$(HAVE_SETSTATE)|g' \
+	      -e 's|@''HAVE_DECL_SETSTATE''@|$(HAVE_DECL_SETSTATE)|g' \
+	      -e 's|@''HAVE_STRTOD''@|$(HAVE_STRTOD)|g' \
+	      -e 's|@''HAVE_STRTOL''@|$(HAVE_STRTOL)|g' \
+	      -e 's|@''HAVE_STRTOLD''@|$(HAVE_STRTOLD)|g' \
+	      -e 's|@''HAVE_STRTOLL''@|$(HAVE_STRTOLL)|g' \
+	      -e 's|@''HAVE_STRTOUL''@|$(HAVE_STRTOUL)|g' \
+	      -e 's|@''HAVE_STRTOULL''@|$(HAVE_STRTOULL)|g' \
+	      -e 's|@''HAVE_STRUCT_RANDOM_DATA''@|$(HAVE_STRUCT_RANDOM_DATA)|g' \
+	      -e 's|@''HAVE_SYS_LOADAVG_H''@|$(HAVE_SYS_LOADAVG_H)|g' \
+	      -e 's|@''HAVE_UNLOCKPT''@|$(HAVE_UNLOCKPT)|g' \
+	      -e 's|@''HAVE_DECL_UNSETENV''@|$(HAVE_DECL_UNSETENV)|g' \
+	      -e 's|@''REPLACE_ALIGNED_ALLOC''@|$(REPLACE_ALIGNED_ALLOC)|g' \
+	      -e 's|@''REPLACE_CALLOC''@|$(REPLACE_CALLOC)|g' \
+	      -e 's|@''REPLACE_CANONICALIZE_FILE_NAME''@|$(REPLACE_CANONICALIZE_FILE_NAME)|g' \
+	      -e 's|@''REPLACE_FREE''@|$(REPLACE_FREE)|g' \
+	      -e 's|@''REPLACE_INITSTATE''@|$(REPLACE_INITSTATE)|g' \
+	      -e 's|@''REPLACE_MALLOC''@|$(REPLACE_MALLOC)|g' \
+	      -e 's|@''REPLACE_MBTOWC''@|$(REPLACE_MBTOWC)|g' \
+	      -e 's|@''REPLACE_MKSTEMP''@|$(REPLACE_MKSTEMP)|g' \
+	      -e 's|@''REPLACE_POSIX_MEMALIGN''@|$(REPLACE_POSIX_MEMALIGN)|g' \
+	      -e 's|@''REPLACE_PTSNAME''@|$(REPLACE_PTSNAME)|g' \
+	      -e 's|@''REPLACE_PTSNAME_R''@|$(REPLACE_PTSNAME_R)|g' \
+	      -e 's|@''REPLACE_PUTENV''@|$(REPLACE_PUTENV)|g' \
+	      -e 's|@''REPLACE_QSORT_R''@|$(REPLACE_QSORT_R)|g' \
+	      -e 's|@''REPLACE_RANDOM''@|$(REPLACE_RANDOM)|g' \
+	      -e 's|@''REPLACE_RANDOM_R''@|$(REPLACE_RANDOM_R)|g' \
+	      -e 's|@''REPLACE_REALLOC''@|$(REPLACE_REALLOC)|g' \
+	      -e 's|@''REPLACE_REALLOCARRAY''@|$(REPLACE_REALLOCARRAY)|g' \
+	      -e 's|@''REPLACE_REALPATH''@|$(REPLACE_REALPATH)|g' \
+	      -e 's|@''REPLACE_SETENV''@|$(REPLACE_SETENV)|g' \
+	      -e 's|@''REPLACE_SETSTATE''@|$(REPLACE_SETSTATE)|g' \
+	      -e 's|@''REPLACE_STRTOD''@|$(REPLACE_STRTOD)|g' \
+	      -e 's|@''REPLACE_STRTOL''@|$(REPLACE_STRTOL)|g' \
+	      -e 's|@''REPLACE_STRTOLD''@|$(REPLACE_STRTOLD)|g' \
+	      -e 's|@''REPLACE_STRTOLL''@|$(REPLACE_STRTOLL)|g' \
+	      -e 's|@''REPLACE_STRTOUL''@|$(REPLACE_STRTOUL)|g' \
+	      -e 's|@''REPLACE_STRTOULL''@|$(REPLACE_STRTOULL)|g' \
+	      -e 's|@''REPLACE_UNSETENV''@|$(REPLACE_UNSETENV)|g' \
+	      -e 's|@''REPLACE_WCTOMB''@|$(REPLACE_WCTOMB)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _Noreturn/r $(_NORETURN_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <string.h> when the system
+# doesn't have one that works with the given compiler.
+string.h: string.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_STRING_H''@|$(NEXT_STRING_H)|g' \
+	      -e 's/@''GNULIB_EXPLICIT_BZERO''@/$(GL_GNULIB_EXPLICIT_BZERO)/g' \
+	      -e 's/@''GNULIB_FFSL''@/$(GL_GNULIB_FFSL)/g' \
+	      -e 's/@''GNULIB_FFSLL''@/$(GL_GNULIB_FFSLL)/g' \
+	      -e 's/@''GNULIB_MBSLEN''@/$(GL_GNULIB_MBSLEN)/g' \
+	      -e 's/@''GNULIB_MBSNLEN''@/$(GL_GNULIB_MBSNLEN)/g' \
+	      -e 's/@''GNULIB_MBSCHR''@/$(GL_GNULIB_MBSCHR)/g' \
+	      -e 's/@''GNULIB_MBSRCHR''@/$(GL_GNULIB_MBSRCHR)/g' \
+	      -e 's/@''GNULIB_MBSSTR''@/$(GL_GNULIB_MBSSTR)/g' \
+	      -e 's/@''GNULIB_MBSCASECMP''@/$(GL_GNULIB_MBSCASECMP)/g' \
+	      -e 's/@''GNULIB_MBSNCASECMP''@/$(GL_GNULIB_MBSNCASECMP)/g' \
+	      -e 's/@''GNULIB_MBSPCASECMP''@/$(GL_GNULIB_MBSPCASECMP)/g' \
+	      -e 's/@''GNULIB_MBSCASESTR''@/$(GL_GNULIB_MBSCASESTR)/g' \
+	      -e 's/@''GNULIB_MBSCSPN''@/$(GL_GNULIB_MBSCSPN)/g' \
+	      -e 's/@''GNULIB_MBSPBRK''@/$(GL_GNULIB_MBSPBRK)/g' \
+	      -e 's/@''GNULIB_MBSSPN''@/$(GL_GNULIB_MBSSPN)/g' \
+	      -e 's/@''GNULIB_MBSSEP''@/$(GL_GNULIB_MBSSEP)/g' \
+	      -e 's/@''GNULIB_MBSTOK_R''@/$(GL_GNULIB_MBSTOK_R)/g' \
+	      -e 's/@''GNULIB_MEMCHR''@/$(GL_GNULIB_MEMCHR)/g' \
+	      -e 's/@''GNULIB_MEMMEM''@/$(GL_GNULIB_MEMMEM)/g' \
+	      -e 's/@''GNULIB_MEMPCPY''@/$(GL_GNULIB_MEMPCPY)/g' \
+	      -e 's/@''GNULIB_MEMRCHR''@/$(GL_GNULIB_MEMRCHR)/g' \
+	      -e 's/@''GNULIB_RAWMEMCHR''@/$(GL_GNULIB_RAWMEMCHR)/g' \
+	      -e 's/@''GNULIB_STPCPY''@/$(GL_GNULIB_STPCPY)/g' \
+	      -e 's/@''GNULIB_STPNCPY''@/$(GL_GNULIB_STPNCPY)/g' \
+	      -e 's/@''GNULIB_STRCHRNUL''@/$(GL_GNULIB_STRCHRNUL)/g' \
+	      -e 's/@''GNULIB_STRDUP''@/$(GL_GNULIB_STRDUP)/g' \
+	      -e 's/@''GNULIB_STRNCAT''@/$(GL_GNULIB_STRNCAT)/g' \
+	      -e 's/@''GNULIB_STRNDUP''@/$(GL_GNULIB_STRNDUP)/g' \
+	      -e 's/@''GNULIB_STRNLEN''@/$(GL_GNULIB_STRNLEN)/g' \
+	      -e 's/@''GNULIB_STRPBRK''@/$(GL_GNULIB_STRPBRK)/g' \
+	      -e 's/@''GNULIB_STRSEP''@/$(GL_GNULIB_STRSEP)/g' \
+	      -e 's/@''GNULIB_STRSTR''@/$(GL_GNULIB_STRSTR)/g' \
+	      -e 's/@''GNULIB_STRCASESTR''@/$(GL_GNULIB_STRCASESTR)/g' \
+	      -e 's/@''GNULIB_STRTOK_R''@/$(GL_GNULIB_STRTOK_R)/g' \
+	      -e 's/@''GNULIB_STRERROR''@/$(GL_GNULIB_STRERROR)/g' \
+	      -e 's/@''GNULIB_STRERROR_R''@/$(GL_GNULIB_STRERROR_R)/g' \
+	      -e 's/@''GNULIB_STRERRORNAME_NP''@/$(GL_GNULIB_STRERRORNAME_NP)/g' \
+	      -e 's/@''GNULIB_SIGABBREV_NP''@/$(GL_GNULIB_SIGABBREV_NP)/g' \
+	      -e 's/@''GNULIB_SIGDESCR_NP''@/$(GL_GNULIB_SIGDESCR_NP)/g' \
+	      -e 's/@''GNULIB_STRSIGNAL''@/$(GL_GNULIB_STRSIGNAL)/g' \
+	      -e 's/@''GNULIB_STRVERSCMP''@/$(GL_GNULIB_STRVERSCMP)/g' \
+	      -e 's/@''GNULIB_MDA_MEMCCPY''@/$(GL_GNULIB_MDA_MEMCCPY)/g' \
+	      -e 's/@''GNULIB_MDA_STRDUP''@/$(GL_GNULIB_MDA_STRDUP)/g' \
+	      < $(srcdir)/string.in.h | \
+	  sed -e 's|@''HAVE_EXPLICIT_BZERO''@|$(HAVE_EXPLICIT_BZERO)|g' \
+	      -e 's|@''HAVE_FFSL''@|$(HAVE_FFSL)|g' \
+	      -e 's|@''HAVE_FFSLL''@|$(HAVE_FFSLL)|g' \
+	      -e 's|@''HAVE_MBSLEN''@|$(HAVE_MBSLEN)|g' \
+	      -e 's|@''HAVE_DECL_MEMMEM''@|$(HAVE_DECL_MEMMEM)|g' \
+	      -e 's|@''HAVE_MEMPCPY''@|$(HAVE_MEMPCPY)|g' \
+	      -e 's|@''HAVE_DECL_MEMRCHR''@|$(HAVE_DECL_MEMRCHR)|g' \
+	      -e 's|@''HAVE_RAWMEMCHR''@|$(HAVE_RAWMEMCHR)|g' \
+	      -e 's|@''HAVE_STPCPY''@|$(HAVE_STPCPY)|g' \
+	      -e 's|@''HAVE_STPNCPY''@|$(HAVE_STPNCPY)|g' \
+	      -e 's|@''HAVE_STRCHRNUL''@|$(HAVE_STRCHRNUL)|g' \
+	      -e 's|@''HAVE_DECL_STRDUP''@|$(HAVE_DECL_STRDUP)|g' \
+	      -e 's|@''HAVE_DECL_STRNDUP''@|$(HAVE_DECL_STRNDUP)|g' \
+	      -e 's|@''HAVE_DECL_STRNLEN''@|$(HAVE_DECL_STRNLEN)|g' \
+	      -e 's|@''HAVE_STRPBRK''@|$(HAVE_STRPBRK)|g' \
+	      -e 's|@''HAVE_STRSEP''@|$(HAVE_STRSEP)|g' \
+	      -e 's|@''HAVE_STRCASESTR''@|$(HAVE_STRCASESTR)|g' \
+	      -e 's|@''HAVE_DECL_STRTOK_R''@|$(HAVE_DECL_STRTOK_R)|g' \
+	      -e 's|@''HAVE_DECL_STRERROR_R''@|$(HAVE_DECL_STRERROR_R)|g' \
+	      -e 's|@''HAVE_STRERRORNAME_NP''@|$(HAVE_STRERRORNAME_NP)|g' \
+	      -e 's|@''HAVE_SIGABBREV_NP''@|$(HAVE_SIGABBREV_NP)|g' \
+	      -e 's|@''HAVE_SIGDESCR_NP''@|$(HAVE_SIGDESCR_NP)|g' \
+	      -e 's|@''HAVE_DECL_STRSIGNAL''@|$(HAVE_DECL_STRSIGNAL)|g' \
+	      -e 's|@''HAVE_STRVERSCMP''@|$(HAVE_STRVERSCMP)|g' \
+	      -e 's|@''REPLACE_FFSLL''@|$(REPLACE_FFSLL)|g' \
+	      -e 's|@''REPLACE_MEMCHR''@|$(REPLACE_MEMCHR)|g' \
+	      -e 's|@''REPLACE_MEMMEM''@|$(REPLACE_MEMMEM)|g' \
+	      -e 's|@''REPLACE_STPNCPY''@|$(REPLACE_STPNCPY)|g' \
+	      -e 's|@''REPLACE_STRCHRNUL''@|$(REPLACE_STRCHRNUL)|g' \
+	      -e 's|@''REPLACE_STRDUP''@|$(REPLACE_STRDUP)|g' \
+	      -e 's|@''REPLACE_STRNCAT''@|$(REPLACE_STRNCAT)|g' \
+	      -e 's|@''REPLACE_STRNDUP''@|$(REPLACE_STRNDUP)|g' \
+	      -e 's|@''REPLACE_STRNLEN''@|$(REPLACE_STRNLEN)|g' \
+	      -e 's|@''REPLACE_STRSTR''@|$(REPLACE_STRSTR)|g' \
+	      -e 's|@''REPLACE_STRCASESTR''@|$(REPLACE_STRCASESTR)|g' \
+	      -e 's|@''REPLACE_STRTOK_R''@|$(REPLACE_STRTOK_R)|g' \
+	      -e 's|@''REPLACE_STRERROR''@|$(REPLACE_STRERROR)|g' \
+	      -e 's|@''REPLACE_STRERROR_R''@|$(REPLACE_STRERROR_R)|g' \
+	      -e 's|@''REPLACE_STRERRORNAME_NP''@|$(REPLACE_STRERRORNAME_NP)|g' \
+	      -e 's|@''REPLACE_STRSIGNAL''@|$(REPLACE_STRSIGNAL)|g' \
+	      -e 's|@''UNDEFINE_STRTOK_R''@|$(UNDEFINE_STRTOK_R)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
+	      < $(srcdir)/string.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <sys/stat.h> when the system
+# has one that is incomplete.
+sys/stat.h: sys_stat.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_STAT_H''@|$(NEXT_SYS_STAT_H)|g' \
+	      -e 's|@''WINDOWS_64_BIT_ST_SIZE''@|$(WINDOWS_64_BIT_ST_SIZE)|g' \
+	      -e 's|@''WINDOWS_STAT_TIMESPEC''@|$(WINDOWS_STAT_TIMESPEC)|g' \
+	      -e 's/@''GNULIB_FCHMODAT''@/$(GL_GNULIB_FCHMODAT)/g' \
+	      -e 's/@''GNULIB_FSTAT''@/$(GL_GNULIB_FSTAT)/g' \
+	      -e 's/@''GNULIB_FSTATAT''@/$(GL_GNULIB_FSTATAT)/g' \
+	      -e 's/@''GNULIB_FUTIMENS''@/$(GL_GNULIB_FUTIMENS)/g' \
+	      -e 's/@''GNULIB_GETUMASK''@/$(GL_GNULIB_GETUMASK)/g' \
+	      -e 's/@''GNULIB_LCHMOD''@/$(GL_GNULIB_LCHMOD)/g' \
+	      -e 's/@''GNULIB_LSTAT''@/$(GL_GNULIB_LSTAT)/g' \
+	      -e 's/@''GNULIB_MKDIR''@/$(GL_GNULIB_MKDIR)/g' \
+	      -e 's/@''GNULIB_MKDIRAT''@/$(GL_GNULIB_MKDIRAT)/g' \
+	      -e 's/@''GNULIB_MKFIFO''@/$(GL_GNULIB_MKFIFO)/g' \
+	      -e 's/@''GNULIB_MKFIFOAT''@/$(GL_GNULIB_MKFIFOAT)/g' \
+	      -e 's/@''GNULIB_MKNOD''@/$(GL_GNULIB_MKNOD)/g' \
+	      -e 's/@''GNULIB_MKNODAT''@/$(GL_GNULIB_MKNODAT)/g' \
+	      -e 's/@''GNULIB_STAT''@/$(GL_GNULIB_STAT)/g' \
+	      -e 's/@''GNULIB_UTIMENSAT''@/$(GL_GNULIB_UTIMENSAT)/g' \
+	      -e 's/@''GNULIB_OVERRIDES_STRUCT_STAT''@/$(GL_GNULIB_OVERRIDES_STRUCT_STAT)/g' \
+	      -e 's/@''GNULIB_MDA_CHMOD''@/$(GL_GNULIB_MDA_CHMOD)/g' \
+	      -e 's/@''GNULIB_MDA_MKDIR''@/$(GL_GNULIB_MDA_MKDIR)/g' \
+	      -e 's/@''GNULIB_MDA_UMASK''@/$(GL_GNULIB_MDA_UMASK)/g' \
+	      -e 's|@''HAVE_FCHMODAT''@|$(HAVE_FCHMODAT)|g' \
+	      -e 's|@''HAVE_FSTATAT''@|$(HAVE_FSTATAT)|g' \
+	      -e 's|@''HAVE_FUTIMENS''@|$(HAVE_FUTIMENS)|g' \
+	      -e 's|@''HAVE_GETUMASK''@|$(HAVE_GETUMASK)|g' \
+	      -e 's|@''HAVE_LCHMOD''@|$(HAVE_LCHMOD)|g' \
+	      -e 's|@''HAVE_LSTAT''@|$(HAVE_LSTAT)|g' \
+	      -e 's|@''HAVE_MKDIRAT''@|$(HAVE_MKDIRAT)|g' \
+	      -e 's|@''HAVE_MKFIFO''@|$(HAVE_MKFIFO)|g' \
+	      -e 's|@''HAVE_MKFIFOAT''@|$(HAVE_MKFIFOAT)|g' \
+	      -e 's|@''HAVE_MKNOD''@|$(HAVE_MKNOD)|g' \
+	      -e 's|@''HAVE_MKNODAT''@|$(HAVE_MKNODAT)|g' \
+	      -e 's|@''HAVE_UTIMENSAT''@|$(HAVE_UTIMENSAT)|g' \
+	      -e 's|@''REPLACE_FCHMODAT''@|$(REPLACE_FCHMODAT)|g' \
+	      -e 's|@''REPLACE_FSTAT''@|$(REPLACE_FSTAT)|g' \
+	      -e 's|@''REPLACE_FSTATAT''@|$(REPLACE_FSTATAT)|g' \
+	      -e 's|@''REPLACE_FUTIMENS''@|$(REPLACE_FUTIMENS)|g' \
+	      -e 's|@''REPLACE_LSTAT''@|$(REPLACE_LSTAT)|g' \
+	      -e 's|@''REPLACE_MKDIR''@|$(REPLACE_MKDIR)|g' \
+	      -e 's|@''REPLACE_MKFIFO''@|$(REPLACE_MKFIFO)|g' \
+	      -e 's|@''REPLACE_MKFIFOAT''@|$(REPLACE_MKFIFOAT)|g' \
+	      -e 's|@''REPLACE_MKNOD''@|$(REPLACE_MKNOD)|g' \
+	      -e 's|@''REPLACE_MKNODAT''@|$(REPLACE_MKNODAT)|g' \
+	      -e 's|@''REPLACE_STAT''@|$(REPLACE_STAT)|g' \
+	      -e 's|@''REPLACE_UTIMENSAT''@|$(REPLACE_UTIMENSAT)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/sys_stat.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <sys/types.h> when the system
+# doesn't have one that works with the given compiler.
+sys/types.h: sys_types.in.h $(top_builddir)/config.status
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_TYPES_H''@|$(NEXT_SYS_TYPES_H)|g' \
+	      -e 's|@''WINDOWS_64_BIT_OFF_T''@|$(WINDOWS_64_BIT_OFF_T)|g' \
+	      -e 's|@''WINDOWS_STAT_INODES''@|$(WINDOWS_STAT_INODES)|g' \
+	      < $(srcdir)/sys_types.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <time.h> when the system
+# doesn't have one that works with the given compiler.
+time.h: time.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_TIME_H''@|$(NEXT_TIME_H)|g' \
+	      -e 's/@''GNULIB_CTIME''@/$(GL_GNULIB_CTIME)/g' \
+	      -e 's/@''GNULIB_LOCALTIME''@/$(GL_GNULIB_LOCALTIME)/g' \
+	      -e 's/@''GNULIB_MKTIME''@/$(GL_GNULIB_MKTIME)/g' \
+	      -e 's/@''GNULIB_NANOSLEEP''@/$(GL_GNULIB_NANOSLEEP)/g' \
+	      -e 's/@''GNULIB_STRFTIME''@/$(GL_GNULIB_STRFTIME)/g' \
+	      -e 's/@''GNULIB_STRPTIME''@/$(GL_GNULIB_STRPTIME)/g' \
+	      -e 's/@''GNULIB_TIMEGM''@/$(GL_GNULIB_TIMEGM)/g' \
+	      -e 's/@''GNULIB_TIMESPEC_GET''@/$(GL_GNULIB_TIMESPEC_GET)/g' \
+	      -e 's/@''GNULIB_TIME_R''@/$(GL_GNULIB_TIME_R)/g' \
+	      -e 's/@''GNULIB_TIME_RZ''@/$(GL_GNULIB_TIME_RZ)/g' \
+	      -e 's/@''GNULIB_TZSET''@/$(GL_GNULIB_TZSET)/g' \
+	      -e 's/@''GNULIB_MDA_TZSET''@/$(GL_GNULIB_MDA_TZSET)/g' \
+	      -e 's|@''HAVE_DECL_LOCALTIME_R''@|$(HAVE_DECL_LOCALTIME_R)|g' \
+	      -e 's|@''HAVE_NANOSLEEP''@|$(HAVE_NANOSLEEP)|g' \
+	      -e 's|@''HAVE_STRPTIME''@|$(HAVE_STRPTIME)|g' \
+	      -e 's|@''HAVE_TIMEGM''@|$(HAVE_TIMEGM)|g' \
+	      -e 's|@''HAVE_TIMESPEC_GET''@|$(HAVE_TIMESPEC_GET)|g' \
+	      -e 's|@''HAVE_TIMEZONE_T''@|$(HAVE_TIMEZONE_T)|g' \
+	      -e 's|@''REPLACE_CTIME''@|$(REPLACE_CTIME)|g' \
+	      -e 's|@''REPLACE_GMTIME''@|$(REPLACE_GMTIME)|g' \
+	      -e 's|@''REPLACE_LOCALTIME''@|$(REPLACE_LOCALTIME)|g' \
+	      -e 's|@''REPLACE_LOCALTIME_R''@|$(REPLACE_LOCALTIME_R)|g' \
+	      -e 's|@''REPLACE_MKTIME''@|$(REPLACE_MKTIME)|g' \
+	      -e 's|@''REPLACE_NANOSLEEP''@|$(REPLACE_NANOSLEEP)|g' \
+	      -e 's|@''REPLACE_STRFTIME''@|$(REPLACE_STRFTIME)|g' \
+	      -e 's|@''REPLACE_TIMEGM''@|$(REPLACE_TIMEGM)|g' \
+	      -e 's|@''REPLACE_TZSET''@|$(REPLACE_TZSET)|g' \
+	      -e 's|@''PTHREAD_H_DEFINES_STRUCT_TIMESPEC''@|$(PTHREAD_H_DEFINES_STRUCT_TIMESPEC)|g' \
+	      -e 's|@''SYS_TIME_H_DEFINES_STRUCT_TIMESPEC''@|$(SYS_TIME_H_DEFINES_STRUCT_TIMESPEC)|g' \
+	      -e 's|@''TIME_H_DEFINES_STRUCT_TIMESPEC''@|$(TIME_H_DEFINES_STRUCT_TIMESPEC)|g' \
+	      -e 's|@''UNISTD_H_DEFINES_STRUCT_TIMESPEC''@|$(UNISTD_H_DEFINES_STRUCT_TIMESPEC)|g' \
+	      -e 's|@''TIME_H_DEFINES_TIME_UTC''@|$(TIME_H_DEFINES_TIME_UTC)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/time.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create an empty placeholder for
+# <unistd.h> when the system doesn't have one.
+unistd.h: unistd.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_UNISTD_H''@|$(HAVE_UNISTD_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_UNISTD_H''@|$(NEXT_UNISTD_H)|g' \
+	      -e 's|@''WINDOWS_64_BIT_OFF_T''@|$(WINDOWS_64_BIT_OFF_T)|g' \
+	      -e 's/@''GNULIB_ACCESS''@/$(GL_GNULIB_ACCESS)/g' \
+	      -e 's/@''GNULIB_CHDIR''@/$(GL_GNULIB_CHDIR)/g' \
+	      -e 's/@''GNULIB_CHOWN''@/$(GL_GNULIB_CHOWN)/g' \
+	      -e 's/@''GNULIB_CLOSE''@/$(GL_GNULIB_CLOSE)/g' \
+	      -e 's/@''GNULIB_COPY_FILE_RANGE''@/$(GL_GNULIB_COPY_FILE_RANGE)/g' \
+	      -e 's/@''GNULIB_DUP''@/$(GL_GNULIB_DUP)/g' \
+	      -e 's/@''GNULIB_DUP2''@/$(GL_GNULIB_DUP2)/g' \
+	      -e 's/@''GNULIB_DUP3''@/$(GL_GNULIB_DUP3)/g' \
+	      -e 's/@''GNULIB_ENVIRON''@/$(GL_GNULIB_ENVIRON)/g' \
+	      -e 's/@''GNULIB_EUIDACCESS''@/$(GL_GNULIB_EUIDACCESS)/g' \
+	      -e 's/@''GNULIB_EXECL''@/$(GL_GNULIB_EXECL)/g' \
+	      -e 's/@''GNULIB_EXECLE''@/$(GL_GNULIB_EXECLE)/g' \
+	      -e 's/@''GNULIB_EXECLP''@/$(GL_GNULIB_EXECLP)/g' \
+	      -e 's/@''GNULIB_EXECV''@/$(GL_GNULIB_EXECV)/g' \
+	      -e 's/@''GNULIB_EXECVE''@/$(GL_GNULIB_EXECVE)/g' \
+	      -e 's/@''GNULIB_EXECVP''@/$(GL_GNULIB_EXECVP)/g' \
+	      -e 's/@''GNULIB_EXECVPE''@/$(GL_GNULIB_EXECVPE)/g' \
+	      -e 's/@''GNULIB_FACCESSAT''@/$(GL_GNULIB_FACCESSAT)/g' \
+	      -e 's/@''GNULIB_FCHDIR''@/$(GL_GNULIB_FCHDIR)/g' \
+	      -e 's/@''GNULIB_FCHOWNAT''@/$(GL_GNULIB_FCHOWNAT)/g' \
+	      -e 's/@''GNULIB_FDATASYNC''@/$(GL_GNULIB_FDATASYNC)/g' \
+	      -e 's/@''GNULIB_FSYNC''@/$(GL_GNULIB_FSYNC)/g' \
+	      -e 's/@''GNULIB_FTRUNCATE''@/$(GL_GNULIB_FTRUNCATE)/g' \
+	      -e 's/@''GNULIB_GETCWD''@/$(GL_GNULIB_GETCWD)/g' \
+	      -e 's/@''GNULIB_GETDOMAINNAME''@/$(GL_GNULIB_GETDOMAINNAME)/g' \
+	      -e 's/@''GNULIB_GETDTABLESIZE''@/$(GL_GNULIB_GETDTABLESIZE)/g' \
+	      -e 's/@''GNULIB_GETENTROPY''@/$(GL_GNULIB_GETENTROPY)/g' \
+	      -e 's/@''GNULIB_GETGROUPS''@/$(GL_GNULIB_GETGROUPS)/g' \
+	      -e 's/@''GNULIB_GETHOSTNAME''@/$(GL_GNULIB_GETHOSTNAME)/g' \
+	      -e 's/@''GNULIB_GETLOGIN''@/$(GL_GNULIB_GETLOGIN)/g' \
+	      -e 's/@''GNULIB_GETLOGIN_R''@/$(GL_GNULIB_GETLOGIN_R)/g' \
+	      -e 's/@''GNULIB_GETOPT_POSIX''@/$(GL_GNULIB_GETOPT_POSIX)/g' \
+	      -e 's/@''GNULIB_GETPAGESIZE''@/$(GL_GNULIB_GETPAGESIZE)/g' \
+	      -e 's/@''GNULIB_GETPASS''@/$(GL_GNULIB_GETPASS)/g' \
+	      -e 's/@''GNULIB_GETUSERSHELL''@/$(GL_GNULIB_GETUSERSHELL)/g' \
+	      -e 's/@''GNULIB_GROUP_MEMBER''@/$(GL_GNULIB_GROUP_MEMBER)/g' \
+	      -e 's/@''GNULIB_ISATTY''@/$(GL_GNULIB_ISATTY)/g' \
+	      -e 's/@''GNULIB_LCHOWN''@/$(GL_GNULIB_LCHOWN)/g' \
+	      -e 's/@''GNULIB_LINK''@/$(GL_GNULIB_LINK)/g' \
+	      -e 's/@''GNULIB_LINKAT''@/$(GL_GNULIB_LINKAT)/g' \
+	      -e 's/@''GNULIB_LSEEK''@/$(GL_GNULIB_LSEEK)/g' \
+	      -e 's/@''GNULIB_PIPE''@/$(GL_GNULIB_PIPE)/g' \
+	      -e 's/@''GNULIB_PIPE2''@/$(GL_GNULIB_PIPE2)/g' \
+	      -e 's/@''GNULIB_PREAD''@/$(GL_GNULIB_PREAD)/g' \
+	      -e 's/@''GNULIB_PWRITE''@/$(GL_GNULIB_PWRITE)/g' \
+	      -e 's/@''GNULIB_READ''@/$(GL_GNULIB_READ)/g' \
+	      -e 's/@''GNULIB_READLINK''@/$(GL_GNULIB_READLINK)/g' \
+	      -e 's/@''GNULIB_READLINKAT''@/$(GL_GNULIB_READLINKAT)/g' \
+	      -e 's/@''GNULIB_RMDIR''@/$(GL_GNULIB_RMDIR)/g' \
+	      -e 's/@''GNULIB_SETHOSTNAME''@/$(GL_GNULIB_SETHOSTNAME)/g' \
+	      -e 's/@''GNULIB_SLEEP''@/$(GL_GNULIB_SLEEP)/g' \
+	      -e 's/@''GNULIB_SYMLINK''@/$(GL_GNULIB_SYMLINK)/g' \
+	      -e 's/@''GNULIB_SYMLINKAT''@/$(GL_GNULIB_SYMLINKAT)/g' \
+	      -e 's/@''GNULIB_TRUNCATE''@/$(GL_GNULIB_TRUNCATE)/g' \
+	      -e 's/@''GNULIB_TTYNAME_R''@/$(GL_GNULIB_TTYNAME_R)/g' \
+	      -e 's/@''GNULIB_UNISTD_H_GETOPT''@/0$(GL_GNULIB_UNISTD_H_GETOPT)/g' \
+	      -e 's/@''GNULIB_UNISTD_H_NONBLOCKING''@/$(GL_GNULIB_UNISTD_H_NONBLOCKING)/g' \
+	      -e 's/@''GNULIB_UNISTD_H_SIGPIPE''@/$(GL_GNULIB_UNISTD_H_SIGPIPE)/g' \
+	      -e 's/@''GNULIB_UNLINK''@/$(GL_GNULIB_UNLINK)/g' \
+	      -e 's/@''GNULIB_UNLINKAT''@/$(GL_GNULIB_UNLINKAT)/g' \
+	      -e 's/@''GNULIB_USLEEP''@/$(GL_GNULIB_USLEEP)/g' \
+	      -e 's/@''GNULIB_WRITE''@/$(GL_GNULIB_WRITE)/g' \
+	      -e 's/@''GNULIB_MDA_ACCESS''@/$(GL_GNULIB_MDA_ACCESS)/g' \
+	      -e 's/@''GNULIB_MDA_CHDIR''@/$(GL_GNULIB_MDA_CHDIR)/g' \
+	      -e 's/@''GNULIB_MDA_CLOSE''@/$(GL_GNULIB_MDA_CLOSE)/g' \
+	      -e 's/@''GNULIB_MDA_DUP''@/$(GL_GNULIB_MDA_DUP)/g' \
+	      -e 's/@''GNULIB_MDA_DUP2''@/$(GL_GNULIB_MDA_DUP2)/g' \
+	      -e 's/@''GNULIB_MDA_EXECL''@/$(GL_GNULIB_MDA_EXECL)/g' \
+	      -e 's/@''GNULIB_MDA_EXECLE''@/$(GL_GNULIB_MDA_EXECLE)/g' \
+	      -e 's/@''GNULIB_MDA_EXECLP''@/$(GL_GNULIB_MDA_EXECLP)/g' \
+	      -e 's/@''GNULIB_MDA_EXECV''@/$(GL_GNULIB_MDA_EXECV)/g' \
+	      -e 's/@''GNULIB_MDA_EXECVE''@/$(GL_GNULIB_MDA_EXECVE)/g' \
+	      -e 's/@''GNULIB_MDA_EXECVP''@/$(GL_GNULIB_MDA_EXECVP)/g' \
+	      -e 's/@''GNULIB_MDA_EXECVPE''@/$(GL_GNULIB_MDA_EXECVPE)/g' \
+	      -e 's/@''GNULIB_MDA_GETCWD''@/$(GL_GNULIB_MDA_GETCWD)/g' \
+	      -e 's/@''GNULIB_MDA_GETPID''@/$(GL_GNULIB_MDA_GETPID)/g' \
+	      -e 's/@''GNULIB_MDA_ISATTY''@/$(GL_GNULIB_MDA_ISATTY)/g' \
+	      -e 's/@''GNULIB_MDA_LSEEK''@/$(GL_GNULIB_MDA_LSEEK)/g' \
+	      -e 's/@''GNULIB_MDA_READ''@/$(GL_GNULIB_MDA_READ)/g' \
+	      -e 's/@''GNULIB_MDA_RMDIR''@/$(GL_GNULIB_MDA_RMDIR)/g' \
+	      -e 's/@''GNULIB_MDA_SWAB''@/$(GL_GNULIB_MDA_SWAB)/g' \
+	      -e 's/@''GNULIB_MDA_UNLINK''@/$(GL_GNULIB_MDA_UNLINK)/g' \
+	      -e 's/@''GNULIB_MDA_WRITE''@/$(GL_GNULIB_MDA_WRITE)/g' \
+	      < $(srcdir)/unistd.in.h | \
+	  sed -e 's|@''HAVE_CHOWN''@|$(HAVE_CHOWN)|g' \
+	      -e 's|@''HAVE_COPY_FILE_RANGE''@|$(HAVE_COPY_FILE_RANGE)|g' \
+	      -e 's|@''HAVE_DUP3''@|$(HAVE_DUP3)|g' \
+	      -e 's|@''HAVE_EUIDACCESS''@|$(HAVE_EUIDACCESS)|g' \
+	      -e 's|@''HAVE_EXECVPE''@|$(HAVE_EXECVPE)|g' \
+	      -e 's|@''HAVE_FACCESSAT''@|$(HAVE_FACCESSAT)|g' \
+	      -e 's|@''HAVE_FCHDIR''@|$(HAVE_FCHDIR)|g' \
+	      -e 's|@''HAVE_FCHOWNAT''@|$(HAVE_FCHOWNAT)|g' \
+	      -e 's|@''HAVE_FDATASYNC''@|$(HAVE_FDATASYNC)|g' \
+	      -e 's|@''HAVE_FSYNC''@|$(HAVE_FSYNC)|g' \
+	      -e 's|@''HAVE_FTRUNCATE''@|$(HAVE_FTRUNCATE)|g' \
+	      -e 's|@''HAVE_GETDTABLESIZE''@|$(HAVE_GETDTABLESIZE)|g' \
+	      -e 's|@''HAVE_GETENTROPY''@|$(HAVE_GETENTROPY)|g' \
+	      -e 's|@''HAVE_GETGROUPS''@|$(HAVE_GETGROUPS)|g' \
+	      -e 's|@''HAVE_GETHOSTNAME''@|$(HAVE_GETHOSTNAME)|g' \
+	      -e 's|@''HAVE_GETPAGESIZE''@|$(HAVE_GETPAGESIZE)|g' \
+	      -e 's|@''HAVE_GETPASS''@|$(HAVE_GETPASS)|g' \
+	      -e 's|@''HAVE_GROUP_MEMBER''@|$(HAVE_GROUP_MEMBER)|g' \
+	      -e 's|@''HAVE_LCHOWN''@|$(HAVE_LCHOWN)|g' \
+	      -e 's|@''HAVE_LINK''@|$(HAVE_LINK)|g' \
+	      -e 's|@''HAVE_LINKAT''@|$(HAVE_LINKAT)|g' \
+	      -e 's|@''HAVE_PIPE''@|$(HAVE_PIPE)|g' \
+	      -e 's|@''HAVE_PIPE2''@|$(HAVE_PIPE2)|g' \
+	      -e 's|@''HAVE_PREAD''@|$(HAVE_PREAD)|g' \
+	      -e 's|@''HAVE_PWRITE''@|$(HAVE_PWRITE)|g' \
+	      -e 's|@''HAVE_READLINK''@|$(HAVE_READLINK)|g' \
+	      -e 's|@''HAVE_READLINKAT''@|$(HAVE_READLINKAT)|g' \
+	      -e 's|@''HAVE_SETHOSTNAME''@|$(HAVE_SETHOSTNAME)|g' \
+	      -e 's|@''HAVE_SLEEP''@|$(HAVE_SLEEP)|g' \
+	      -e 's|@''HAVE_SYMLINK''@|$(HAVE_SYMLINK)|g' \
+	      -e 's|@''HAVE_SYMLINKAT''@|$(HAVE_SYMLINKAT)|g' \
+	      -e 's|@''HAVE_UNLINKAT''@|$(HAVE_UNLINKAT)|g' \
+	      -e 's|@''HAVE_USLEEP''@|$(HAVE_USLEEP)|g' \
+	      -e 's|@''HAVE_DECL_ENVIRON''@|$(HAVE_DECL_ENVIRON)|g' \
+	      -e 's|@''HAVE_DECL_EXECVPE''@|$(HAVE_DECL_EXECVPE)|g' \
+	      -e 's|@''HAVE_DECL_FCHDIR''@|$(HAVE_DECL_FCHDIR)|g' \
+	      -e 's|@''HAVE_DECL_FDATASYNC''@|$(HAVE_DECL_FDATASYNC)|g' \
+	      -e 's|@''HAVE_DECL_GETDOMAINNAME''@|$(HAVE_DECL_GETDOMAINNAME)|g' \
+	      -e 's|@''HAVE_DECL_GETLOGIN''@|$(HAVE_DECL_GETLOGIN)|g' \
+	      -e 's|@''HAVE_DECL_GETLOGIN_R''@|$(HAVE_DECL_GETLOGIN_R)|g' \
+	      -e 's|@''HAVE_DECL_GETPAGESIZE''@|$(HAVE_DECL_GETPAGESIZE)|g' \
+	      -e 's|@''HAVE_DECL_GETUSERSHELL''@|$(HAVE_DECL_GETUSERSHELL)|g' \
+	      -e 's|@''HAVE_DECL_SETHOSTNAME''@|$(HAVE_DECL_SETHOSTNAME)|g' \
+	      -e 's|@''HAVE_DECL_TRUNCATE''@|$(HAVE_DECL_TRUNCATE)|g' \
+	      -e 's|@''HAVE_DECL_TTYNAME_R''@|$(HAVE_DECL_TTYNAME_R)|g' \
+	      -e 's|@''HAVE_OS_H''@|$(HAVE_OS_H)|g' \
+	      -e 's|@''HAVE_SYS_PARAM_H''@|$(HAVE_SYS_PARAM_H)|g' \
+	  | \
+	  sed -e 's|@''REPLACE_ACCESS''@|$(REPLACE_ACCESS)|g' \
+	      -e 's|@''REPLACE_CHOWN''@|$(REPLACE_CHOWN)|g' \
+	      -e 's|@''REPLACE_CLOSE''@|$(REPLACE_CLOSE)|g' \
+	      -e 's|@''REPLACE_DUP''@|$(REPLACE_DUP)|g' \
+	      -e 's|@''REPLACE_DUP2''@|$(REPLACE_DUP2)|g' \
+	      -e 's|@''REPLACE_EXECL''@|$(REPLACE_EXECL)|g' \
+	      -e 's|@''REPLACE_EXECLE''@|$(REPLACE_EXECLE)|g' \
+	      -e 's|@''REPLACE_EXECLP''@|$(REPLACE_EXECLP)|g' \
+	      -e 's|@''REPLACE_EXECV''@|$(REPLACE_EXECV)|g' \
+	      -e 's|@''REPLACE_EXECVE''@|$(REPLACE_EXECVE)|g' \
+	      -e 's|@''REPLACE_EXECVP''@|$(REPLACE_EXECVP)|g' \
+	      -e 's|@''REPLACE_EXECVPE''@|$(REPLACE_EXECVPE)|g' \
+	      -e 's|@''REPLACE_FACCESSAT''@|$(REPLACE_FACCESSAT)|g' \
+	      -e 's|@''REPLACE_FCHOWNAT''@|$(REPLACE_FCHOWNAT)|g' \
+	      -e 's|@''REPLACE_FTRUNCATE''@|$(REPLACE_FTRUNCATE)|g' \
+	      -e 's|@''REPLACE_GETCWD''@|$(REPLACE_GETCWD)|g' \
+	      -e 's|@''REPLACE_GETDOMAINNAME''@|$(REPLACE_GETDOMAINNAME)|g' \
+	      -e 's|@''REPLACE_GETDTABLESIZE''@|$(REPLACE_GETDTABLESIZE)|g' \
+	      -e 's|@''REPLACE_GETLOGIN_R''@|$(REPLACE_GETLOGIN_R)|g' \
+	      -e 's|@''REPLACE_GETGROUPS''@|$(REPLACE_GETGROUPS)|g' \
+	      -e 's|@''REPLACE_GETPAGESIZE''@|$(REPLACE_GETPAGESIZE)|g' \
+	      -e 's|@''REPLACE_GETPASS''@|$(REPLACE_GETPASS)|g' \
+	      -e 's|@''REPLACE_ISATTY''@|$(REPLACE_ISATTY)|g' \
+	      -e 's|@''REPLACE_LCHOWN''@|$(REPLACE_LCHOWN)|g' \
+	      -e 's|@''REPLACE_LINK''@|$(REPLACE_LINK)|g' \
+	      -e 's|@''REPLACE_LINKAT''@|$(REPLACE_LINKAT)|g' \
+	      -e 's|@''REPLACE_LSEEK''@|$(REPLACE_LSEEK)|g' \
+	      -e 's|@''REPLACE_PREAD''@|$(REPLACE_PREAD)|g' \
+	      -e 's|@''REPLACE_PWRITE''@|$(REPLACE_PWRITE)|g' \
+	      -e 's|@''REPLACE_READ''@|$(REPLACE_READ)|g' \
+	      -e 's|@''REPLACE_READLINK''@|$(REPLACE_READLINK)|g' \
+	      -e 's|@''REPLACE_READLINKAT''@|$(REPLACE_READLINKAT)|g' \
+	      -e 's|@''REPLACE_RMDIR''@|$(REPLACE_RMDIR)|g' \
+	      -e 's|@''REPLACE_SLEEP''@|$(REPLACE_SLEEP)|g' \
+	      -e 's|@''REPLACE_SYMLINK''@|$(REPLACE_SYMLINK)|g' \
+	      -e 's|@''REPLACE_SYMLINKAT''@|$(REPLACE_SYMLINKAT)|g' \
+	      -e 's|@''REPLACE_TRUNCATE''@|$(REPLACE_TRUNCATE)|g' \
+	      -e 's|@''REPLACE_TTYNAME_R''@|$(REPLACE_TTYNAME_R)|g' \
+	      -e 's|@''REPLACE_UNLINK''@|$(REPLACE_UNLINK)|g' \
+	      -e 's|@''REPLACE_UNLINKAT''@|$(REPLACE_UNLINKAT)|g' \
+	      -e 's|@''REPLACE_USLEEP''@|$(REPLACE_USLEEP)|g' \
+	      -e 's|@''REPLACE_WRITE''@|$(REPLACE_WRITE)|g' \
+	      -e 's|@''UNISTD_H_HAVE_SYS_RANDOM_H''@|$(UNISTD_H_HAVE_SYS_RANDOM_H)|g' \
+	      -e 's|@''UNISTD_H_HAVE_WINSOCK2_H''@|$(UNISTD_H_HAVE_WINSOCK2_H)|g' \
+	      -e 's|@''UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS''@|$(UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
+	} > $@-t && \
+	mv $@-t $@
+
+unistr.h: unistr.in.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/unistr.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+unitypes.h: unitypes.in.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/unitypes.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+uniwidth.h: uniwidth.in.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/uniwidth.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+# We need the following in order to create <wchar.h> when the system
+# version does not work standalone.
+wchar.h: wchar.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''HAVE_FEATURES_H''@|$(HAVE_FEATURES_H)|g' \
+	      -e 's|@''NEXT_WCHAR_H''@|$(NEXT_WCHAR_H)|g' \
+	      -e 's|@''HAVE_WCHAR_H''@|$(HAVE_WCHAR_H)|g' \
+	      -e 's/@''HAVE_CRTDEFS_H''@/$(HAVE_CRTDEFS_H)/g' \
+	      -e 's/@''GNULIBHEADERS_OVERRIDE_WINT_T''@/$(GNULIBHEADERS_OVERRIDE_WINT_T)/g' \
+	      -e 's/@''GNULIB_BTOWC''@/$(GL_GNULIB_BTOWC)/g' \
+	      -e 's/@''GNULIB_WCTOB''@/$(GL_GNULIB_WCTOB)/g' \
+	      -e 's/@''GNULIB_MBSINIT''@/$(GL_GNULIB_MBSINIT)/g' \
+	      -e 's/@''GNULIB_MBRTOWC''@/$(GL_GNULIB_MBRTOWC)/g' \
+	      -e 's/@''GNULIB_MBRLEN''@/$(GL_GNULIB_MBRLEN)/g' \
+	      -e 's/@''GNULIB_MBSRTOWCS''@/$(GL_GNULIB_MBSRTOWCS)/g' \
+	      -e 's/@''GNULIB_MBSNRTOWCS''@/$(GL_GNULIB_MBSNRTOWCS)/g' \
+	      -e 's/@''GNULIB_WCRTOMB''@/$(GL_GNULIB_WCRTOMB)/g' \
+	      -e 's/@''GNULIB_WCSRTOMBS''@/$(GL_GNULIB_WCSRTOMBS)/g' \
+	      -e 's/@''GNULIB_WCSNRTOMBS''@/$(GL_GNULIB_WCSNRTOMBS)/g' \
+	      -e 's/@''GNULIB_WCWIDTH''@/$(GL_GNULIB_WCWIDTH)/g' \
+	      -e 's/@''GNULIB_WMEMCHR''@/$(GL_GNULIB_WMEMCHR)/g' \
+	      -e 's/@''GNULIB_WMEMCMP''@/$(GL_GNULIB_WMEMCMP)/g' \
+	      -e 's/@''GNULIB_WMEMCPY''@/$(GL_GNULIB_WMEMCPY)/g' \
+	      -e 's/@''GNULIB_WMEMMOVE''@/$(GL_GNULIB_WMEMMOVE)/g' \
+	      -e 's/@''GNULIB_WMEMPCPY''@/$(GL_GNULIB_WMEMPCPY)/g' \
+	      -e 's/@''GNULIB_WMEMSET''@/$(GL_GNULIB_WMEMSET)/g' \
+	      -e 's/@''GNULIB_WCSLEN''@/$(GL_GNULIB_WCSLEN)/g' \
+	      -e 's/@''GNULIB_WCSNLEN''@/$(GL_GNULIB_WCSNLEN)/g' \
+	      -e 's/@''GNULIB_WCSCPY''@/$(GL_GNULIB_WCSCPY)/g' \
+	      -e 's/@''GNULIB_WCPCPY''@/$(GL_GNULIB_WCPCPY)/g' \
+	      -e 's/@''GNULIB_WCSNCPY''@/$(GL_GNULIB_WCSNCPY)/g' \
+	      -e 's/@''GNULIB_WCPNCPY''@/$(GL_GNULIB_WCPNCPY)/g' \
+	      -e 's/@''GNULIB_WCSCAT''@/$(GL_GNULIB_WCSCAT)/g' \
+	      -e 's/@''GNULIB_WCSNCAT''@/$(GL_GNULIB_WCSNCAT)/g' \
+	      -e 's/@''GNULIB_WCSCMP''@/$(GL_GNULIB_WCSCMP)/g' \
+	      -e 's/@''GNULIB_WCSNCMP''@/$(GL_GNULIB_WCSNCMP)/g' \
+	      -e 's/@''GNULIB_WCSCASECMP''@/$(GL_GNULIB_WCSCASECMP)/g' \
+	      -e 's/@''GNULIB_WCSNCASECMP''@/$(GL_GNULIB_WCSNCASECMP)/g' \
+	      -e 's/@''GNULIB_WCSCOLL''@/$(GL_GNULIB_WCSCOLL)/g' \
+	      -e 's/@''GNULIB_WCSXFRM''@/$(GL_GNULIB_WCSXFRM)/g' \
+	      -e 's/@''GNULIB_WCSDUP''@/$(GL_GNULIB_WCSDUP)/g' \
+	      -e 's/@''GNULIB_WCSCHR''@/$(GL_GNULIB_WCSCHR)/g' \
+	      -e 's/@''GNULIB_WCSRCHR''@/$(GL_GNULIB_WCSRCHR)/g' \
+	      -e 's/@''GNULIB_WCSCSPN''@/$(GL_GNULIB_WCSCSPN)/g' \
+	      -e 's/@''GNULIB_WCSSPN''@/$(GL_GNULIB_WCSSPN)/g' \
+	      -e 's/@''GNULIB_WCSPBRK''@/$(GL_GNULIB_WCSPBRK)/g' \
+	      -e 's/@''GNULIB_WCSSTR''@/$(GL_GNULIB_WCSSTR)/g' \
+	      -e 's/@''GNULIB_WCSTOK''@/$(GL_GNULIB_WCSTOK)/g' \
+	      -e 's/@''GNULIB_WCSWIDTH''@/$(GL_GNULIB_WCSWIDTH)/g' \
+	      -e 's/@''GNULIB_WCSFTIME''@/$(GL_GNULIB_WCSFTIME)/g' \
+	      -e 's/@''GNULIB_MDA_WCSDUP''@/$(GL_GNULIB_MDA_WCSDUP)/g' \
+	      < $(srcdir)/wchar.in.h | \
+	  sed -e 's|@''HAVE_WINT_T''@|$(HAVE_WINT_T)|g' \
+	      -e 's|@''HAVE_BTOWC''@|$(HAVE_BTOWC)|g' \
+	      -e 's|@''HAVE_MBSINIT''@|$(HAVE_MBSINIT)|g' \
+	      -e 's|@''HAVE_MBRTOWC''@|$(HAVE_MBRTOWC)|g' \
+	      -e 's|@''HAVE_MBRLEN''@|$(HAVE_MBRLEN)|g' \
+	      -e 's|@''HAVE_MBSRTOWCS''@|$(HAVE_MBSRTOWCS)|g' \
+	      -e 's|@''HAVE_MBSNRTOWCS''@|$(HAVE_MBSNRTOWCS)|g' \
+	      -e 's|@''HAVE_WCRTOMB''@|$(HAVE_WCRTOMB)|g' \
+	      -e 's|@''HAVE_WCSRTOMBS''@|$(HAVE_WCSRTOMBS)|g' \
+	      -e 's|@''HAVE_WCSNRTOMBS''@|$(HAVE_WCSNRTOMBS)|g' \
+	      -e 's|@''HAVE_WMEMCHR''@|$(HAVE_WMEMCHR)|g' \
+	      -e 's|@''HAVE_WMEMCMP''@|$(HAVE_WMEMCMP)|g' \
+	      -e 's|@''HAVE_WMEMCPY''@|$(HAVE_WMEMCPY)|g' \
+	      -e 's|@''HAVE_WMEMMOVE''@|$(HAVE_WMEMMOVE)|g' \
+	      -e 's|@''HAVE_WMEMPCPY''@|$(HAVE_WMEMPCPY)|g' \
+	      -e 's|@''HAVE_WMEMSET''@|$(HAVE_WMEMSET)|g' \
+	      -e 's|@''HAVE_WCSLEN''@|$(HAVE_WCSLEN)|g' \
+	      -e 's|@''HAVE_WCSNLEN''@|$(HAVE_WCSNLEN)|g' \
+	      -e 's|@''HAVE_WCSCPY''@|$(HAVE_WCSCPY)|g' \
+	      -e 's|@''HAVE_WCPCPY''@|$(HAVE_WCPCPY)|g' \
+	      -e 's|@''HAVE_WCSNCPY''@|$(HAVE_WCSNCPY)|g' \
+	      -e 's|@''HAVE_WCPNCPY''@|$(HAVE_WCPNCPY)|g' \
+	      -e 's|@''HAVE_WCSCAT''@|$(HAVE_WCSCAT)|g' \
+	      -e 's|@''HAVE_WCSNCAT''@|$(HAVE_WCSNCAT)|g' \
+	      -e 's|@''HAVE_WCSCMP''@|$(HAVE_WCSCMP)|g' \
+	      -e 's|@''HAVE_WCSNCMP''@|$(HAVE_WCSNCMP)|g' \
+	      -e 's|@''HAVE_WCSCASECMP''@|$(HAVE_WCSCASECMP)|g' \
+	      -e 's|@''HAVE_WCSNCASECMP''@|$(HAVE_WCSNCASECMP)|g' \
+	      -e 's|@''HAVE_WCSCOLL''@|$(HAVE_WCSCOLL)|g' \
+	      -e 's|@''HAVE_WCSXFRM''@|$(HAVE_WCSXFRM)|g' \
+	      -e 's|@''HAVE_WCSDUP''@|$(HAVE_WCSDUP)|g' \
+	      -e 's|@''HAVE_WCSCHR''@|$(HAVE_WCSCHR)|g' \
+	      -e 's|@''HAVE_WCSRCHR''@|$(HAVE_WCSRCHR)|g' \
+	      -e 's|@''HAVE_WCSCSPN''@|$(HAVE_WCSCSPN)|g' \
+	      -e 's|@''HAVE_WCSSPN''@|$(HAVE_WCSSPN)|g' \
+	      -e 's|@''HAVE_WCSPBRK''@|$(HAVE_WCSPBRK)|g' \
+	      -e 's|@''HAVE_WCSSTR''@|$(HAVE_WCSSTR)|g' \
+	      -e 's|@''HAVE_WCSTOK''@|$(HAVE_WCSTOK)|g' \
+	      -e 's|@''HAVE_WCSWIDTH''@|$(HAVE_WCSWIDTH)|g' \
+	      -e 's|@''HAVE_WCSFTIME''@|$(HAVE_WCSFTIME)|g' \
+	      -e 's|@''HAVE_DECL_WCTOB''@|$(HAVE_DECL_WCTOB)|g' \
+	      -e 's|@''HAVE_DECL_WCSDUP''@|$(HAVE_DECL_WCSDUP)|g' \
+	      -e 's|@''HAVE_DECL_WCWIDTH''@|$(HAVE_DECL_WCWIDTH)|g' \
+	  | \
+	  sed -e 's|@''REPLACE_MBSTATE_T''@|$(REPLACE_MBSTATE_T)|g' \
+	      -e 's|@''REPLACE_BTOWC''@|$(REPLACE_BTOWC)|g' \
+	      -e 's|@''REPLACE_WCTOB''@|$(REPLACE_WCTOB)|g' \
+	      -e 's|@''REPLACE_MBSINIT''@|$(REPLACE_MBSINIT)|g' \
+	      -e 's|@''REPLACE_MBRTOWC''@|$(REPLACE_MBRTOWC)|g' \
+	      -e 's|@''REPLACE_MBRLEN''@|$(REPLACE_MBRLEN)|g' \
+	      -e 's|@''REPLACE_MBSRTOWCS''@|$(REPLACE_MBSRTOWCS)|g' \
+	      -e 's|@''REPLACE_MBSNRTOWCS''@|$(REPLACE_MBSNRTOWCS)|g' \
+	      -e 's|@''REPLACE_WCRTOMB''@|$(REPLACE_WCRTOMB)|g' \
+	      -e 's|@''REPLACE_WCSRTOMBS''@|$(REPLACE_WCSRTOMBS)|g' \
+	      -e 's|@''REPLACE_WCSNRTOMBS''@|$(REPLACE_WCSNRTOMBS)|g' \
+	      -e 's|@''REPLACE_WCWIDTH''@|$(REPLACE_WCWIDTH)|g' \
+	      -e 's|@''REPLACE_WCSWIDTH''@|$(REPLACE_WCSWIDTH)|g' \
+	      -e 's|@''REPLACE_WCSFTIME''@|$(REPLACE_WCSFTIME)|g' \
+	      -e 's|@''REPLACE_WCSTOK''@|$(REPLACE_WCSTOK)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
+	} > $@-t && \
+	mv $@-t $@
+
+# We need the following in order to create <wctype.h> when the system
+# doesn't have one that works with the given compiler.
+wctype.h: wctype.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's/@''HAVE_WCTYPE_H''@/$(HAVE_WCTYPE_H)/g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_WCTYPE_H''@|$(NEXT_WCTYPE_H)|g' \
+	      -e 's/@''HAVE_CRTDEFS_H''@/$(HAVE_CRTDEFS_H)/g' \
+	      -e 's/@''GNULIBHEADERS_OVERRIDE_WINT_T''@/$(GNULIBHEADERS_OVERRIDE_WINT_T)/g' \
+	      -e 's/@''GNULIB_ISWBLANK''@/$(GL_GNULIB_ISWBLANK)/g' \
+	      -e 's/@''GNULIB_ISWDIGIT''@/$(GL_GNULIB_ISWDIGIT)/g' \
+	      -e 's/@''GNULIB_ISWXDIGIT''@/$(GL_GNULIB_ISWXDIGIT)/g' \
+	      -e 's/@''GNULIB_WCTYPE''@/$(GL_GNULIB_WCTYPE)/g' \
+	      -e 's/@''GNULIB_ISWCTYPE''@/$(GL_GNULIB_ISWCTYPE)/g' \
+	      -e 's/@''GNULIB_WCTRANS''@/$(GL_GNULIB_WCTRANS)/g' \
+	      -e 's/@''GNULIB_TOWCTRANS''@/$(GL_GNULIB_TOWCTRANS)/g' \
+	      -e 's/@''HAVE_ISWBLANK''@/$(HAVE_ISWBLANK)/g' \
+	      -e 's/@''HAVE_ISWCNTRL''@/$(HAVE_ISWCNTRL)/g' \
+	      -e 's/@''HAVE_WCTYPE_T''@/$(HAVE_WCTYPE_T)/g' \
+	      -e 's/@''HAVE_WCTRANS_T''@/$(HAVE_WCTRANS_T)/g' \
+	      -e 's/@''HAVE_WINT_T''@/$(HAVE_WINT_T)/g' \
+	      -e 's/@''REPLACE_ISWBLANK''@/$(REPLACE_ISWBLANK)/g' \
+	      -e 's/@''REPLACE_ISWDIGIT''@/$(REPLACE_ISWDIGIT)/g' \
+	      -e 's/@''REPLACE_ISWXDIGIT''@/$(REPLACE_ISWXDIGIT)/g' \
+	      -e 's/@''REPLACE_ISWCNTRL''@/$(REPLACE_ISWCNTRL)/g' \
+	      -e 's/@''REPLACE_TOWLOWER''@/$(REPLACE_TOWLOWER)/g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/wctype.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+
+mostlyclean-local: mostlyclean-generic
+	@for dir in '' $(MOSTLYCLEANDIRS); do \
+	  if test -n "$$dir" && test -d $$dir; then \
+	    echo "rmdir $$dir"; rmdir $$dir; \
+	  fi; \
+	done; \
+	:
+colorize.c:
+	$(AM_V_at)echo '#include <$(COLORIZE_SOURCE)>' >$@-t
+	$(AM_V_at)mv $@-t $@
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/grep/lib/_Noreturn.h b/src/grep/lib/_Noreturn.h
new file mode 100644
index 0000000..cb72f26
--- /dev/null
+++ b/src/grep/lib/_Noreturn.h
@@ -0,0 +1,45 @@
+/* A C macro for declaring that a function does not return.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _Noreturn
+# if (defined __cplusplus \
+      && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
+          || (defined _MSC_VER && 1900 <= _MSC_VER)) \
+      && 0)
+    /* [[noreturn]] is not practically usable, because with it the syntax
+         extern _Noreturn void func (...);
+       would not be valid; such a declaration would only be valid with 'extern'
+       and '_Noreturn' swapped, or without the 'extern' keyword.  However, some
+       AIX system header files and several gnulib header files use precisely
+       this syntax with 'extern'.  */
+#  define _Noreturn [[noreturn]]
+# elif ((!defined __cplusplus || defined __clang__) \
+        && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
+            || (!defined __STRICT_ANSI__ \
+                && (__4 < __GNUC__ + (7 <= __GNUC_MINOR__) \
+                    || (defined __apple_build_version__ \
+                        ? 6000000 <= __apple_build_version__ \
+                        : 3 < __clang_major__ + (5 <= __clang_minor__))))))
+   /* _Noreturn works as-is.  */
+# elif (2 < __GNUC__ + (8 <= __GNUC_MINOR__) || defined __clang__ \
+        || 0x5110 <= __SUNPRO_C)
+#  define _Noreturn __attribute__ ((__noreturn__))
+# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
+#  define _Noreturn __declspec (noreturn)
+# else
+#  define _Noreturn
+# endif
+#endif
diff --git a/src/grep/lib/alignof.h b/src/grep/lib/alignof.h
new file mode 100644
index 0000000..e6e7a51
--- /dev/null
+++ b/src/grep/lib/alignof.h
@@ -0,0 +1,52 @@
+/* Determine alignment of types.
+   Copyright (C) 2003-2004, 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _ALIGNOF_H
+#define _ALIGNOF_H
+
+#include <stddef.h>
+
+/* alignof_slot (TYPE)
+   Determine the alignment of a structure slot (field) of a given type,
+   at compile time.  Note that the result depends on the ABI.
+   This is the same as alignof (TYPE) and _Alignof (TYPE), defined in
+   <stdalign.h> if __alignof_is_defined is 1.
+   Note: The result cannot be used as a value for an 'enum' constant,
+   due to bugs in HP-UX 10.20 cc and AIX 3.2.5 xlc.  */
+#if defined __cplusplus
+  template <class type> struct alignof_helper { char __slot1; type __slot2; };
+# define alignof_slot(type) offsetof (alignof_helper<type>, __slot2)
+#else
+# define alignof_slot(type) offsetof (struct { char __slot1; type __slot2; }, __slot2)
+#endif
+
+/* alignof_type (TYPE)
+   Determine the good alignment of an object of the given type at compile time.
+   Note that this is not necessarily the same as alignof_slot(type).
+   For example, with GNU C on x86 platforms and with clang on Linux/x86:
+   alignof_type(long long) = 8, but alignof_slot(long long) = 4.
+   And alignof_type(double) = 8, but
+   - when -malign-double is not specified:  alignof_slot(double) = 4,
+   - when -malign-double is specified:      alignof_slot(double) = 8.
+   Note: The result cannot be used as a value for an 'enum' constant,
+   due to bugs in HP-UX 10.20 cc and AIX 3.2.5 xlc.  */
+#if defined __GNUC__ || defined __clang__ || defined __IBM__ALIGNOF__
+# define alignof_type __alignof__
+#else
+# define alignof_type alignof_slot
+#endif
+
+#endif /* _ALIGNOF_H */
diff --git a/src/grep/lib/alloca.c b/src/grep/lib/alloca.c
new file mode 100644
index 0000000..4880283
--- /dev/null
+++ b/src/grep/lib/alloca.c
@@ -0,0 +1,202 @@
+/* alloca.c -- allocate automatically reclaimed memory
+   This file is in the public domain.  */
+
+/* (Mostly) portable implementation -- D A Gwyn
+
+   This implementation of the PWB library alloca function,
+   which is used to allocate space off the run-time stack so
+   that it is automatically reclaimed upon procedure exit,
+   was inspired by discussions with J. Q. Johnson of Cornell.
+   J.Otto Tennant <jot@cray.com> contributed the Cray support.
+
+   There are some preprocessor constants that can
+   be defined when compiling for your specific system, for
+   improved efficiency; however, the defaults should be okay.
+
+   The general concept of this implementation is to keep
+   track of all alloca-allocated blocks, and reclaim any
+   that are found to be deeper in the stack than the current
+   invocation.  This heuristic does not reclaim storage as
+   soon as it becomes invalid, but it will do so eventually.
+
+   As a special case, alloca(0) reclaims storage without
+   allocating any.  It is a good idea to use alloca(0) in
+   your main control loop, etc. to force garbage collection.  */
+
+#include <config.h>
+
+#include <alloca.h>
+
+#include <string.h>
+#include <stdlib.h>
+
+#ifdef emacs
+# include "lisp.h"
+# include "blockinput.h"
+# ifdef EMACS_FREE
+#  undef free
+#  define free EMACS_FREE
+# endif
+#else
+# define memory_full() abort ()
+#endif
+
+/* If compiling with GCC or clang, this file is not needed.  */
+#if !(defined __GNUC__ || defined __clang__)
+
+/* If someone has defined alloca as a macro,
+   there must be some other way alloca is supposed to work.  */
+# ifndef alloca
+
+#  ifdef emacs
+#   ifdef static
+/* actually, only want this if static is defined as ""
+   -- this is for usg, in which emacs must undefine static
+   in order to make unexec workable
+   */
+#    ifndef STACK_DIRECTION
+you
+lose
+-- must know STACK_DIRECTION at compile-time
+/* Using #error here is not wise since this file should work for
+   old and obscure compilers.  */
+#    endif /* STACK_DIRECTION undefined */
+#   endif /* static */
+#  endif /* emacs */
+
+/* Define STACK_DIRECTION if you know the direction of stack
+   growth for your system; otherwise it will be automatically
+   deduced at run-time.
+
+   STACK_DIRECTION > 0 => grows toward higher addresses
+   STACK_DIRECTION < 0 => grows toward lower addresses
+   STACK_DIRECTION = 0 => direction of growth unknown  */
+
+#  ifndef STACK_DIRECTION
+#   define STACK_DIRECTION      0       /* Direction unknown.  */
+#  endif
+
+#  if STACK_DIRECTION != 0
+
+#   define STACK_DIR    STACK_DIRECTION /* Known at compile-time.  */
+
+#  else /* STACK_DIRECTION == 0; need run-time code.  */
+
+static int stack_dir;           /* 1 or -1 once known.  */
+#   define STACK_DIR    stack_dir
+
+static int
+find_stack_direction (int *addr, int depth)
+{
+  int dir, dummy = 0;
+  if (! addr)
+    addr = &dummy;
+  *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
+  dir = depth ? find_stack_direction (addr, depth - 1) : 0;
+  return dir + dummy;
+}
+
+#  endif /* STACK_DIRECTION == 0 */
+
+/* An "alloca header" is used to:
+   (a) chain together all alloca'ed blocks;
+   (b) keep track of stack depth.
+
+   It is very important that sizeof(header) agree with malloc
+   alignment chunk size.  The following default should work okay.  */
+
+#  ifndef       ALIGN_SIZE
+#   define ALIGN_SIZE   sizeof(double)
+#  endif
+
+typedef union hdr
+{
+  char align[ALIGN_SIZE];       /* To force sizeof(header).  */
+  struct
+    {
+      union hdr *next;          /* For chaining headers.  */
+      char *deep;               /* For stack depth measure.  */
+    } h;
+} header;
+
+static header *last_alloca_header = NULL;       /* -> last alloca header.  */
+
+/* Return a pointer to at least SIZE bytes of storage,
+   which will be automatically reclaimed upon exit from
+   the procedure that called alloca.  Originally, this space
+   was supposed to be taken from the current stack frame of the
+   caller, but that method cannot be made to work for some
+   implementations of C, for example under Gould's UTX/32.  */
+
+void *
+alloca (size_t size)
+{
+  auto char probe;              /* Probes stack depth: */
+  register char *depth = &probe;
+
+#  if STACK_DIRECTION == 0
+  if (STACK_DIR == 0)           /* Unknown growth direction.  */
+    STACK_DIR = find_stack_direction (NULL, (size & 1) + 20);
+#  endif
+
+  /* Reclaim garbage, defined as all alloca'd storage that
+     was allocated from deeper in the stack than currently.  */
+
+  {
+    register header *hp;        /* Traverses linked list.  */
+
+#  ifdef emacs
+    BLOCK_INPUT;
+#  endif
+
+    for (hp = last_alloca_header; hp != NULL;)
+      if ((STACK_DIR > 0 && hp->h.deep > depth)
+          || (STACK_DIR < 0 && hp->h.deep < depth))
+        {
+          register header *np = hp->h.next;
+
+          free (hp);            /* Collect garbage.  */
+
+          hp = np;              /* -> next header.  */
+        }
+      else
+        break;                  /* Rest are not deeper.  */
+
+    last_alloca_header = hp;    /* -> last valid storage.  */
+
+#  ifdef emacs
+    UNBLOCK_INPUT;
+#  endif
+  }
+
+  if (size == 0)
+    return NULL;                /* No allocation required.  */
+
+  /* Allocate combined header + user data storage.  */
+
+  {
+    /* Address of header.  */
+    register header *new;
+
+    size_t combined_size = sizeof (header) + size;
+    if (combined_size < sizeof (header))
+      memory_full ();
+
+    new = malloc (combined_size);
+
+    if (! new)
+      memory_full ();
+
+    new->h.next = last_alloca_header;
+    new->h.deep = depth;
+
+    last_alloca_header = new;
+
+    /* User storage begins just after header.  */
+
+    return (void *) (new + 1);
+  }
+}
+
+# endif /* no alloca */
+#endif /* not GCC || clang */
diff --git a/src/grep/lib/alloca.in.h b/src/grep/lib/alloca.in.h
new file mode 100644
index 0000000..65c2d4d
--- /dev/null
+++ b/src/grep/lib/alloca.in.h
@@ -0,0 +1,72 @@
+/* Memory allocation on the stack.
+
+   Copyright (C) 1995, 1999, 2001-2004, 2006-2021 Free Software Foundation,
+   Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H
+   means there is a real alloca function.  */
+#ifndef _GL_ALLOCA_H
+#define _GL_ALLOCA_H
+
+/* alloca (N) returns a pointer to N bytes of memory
+   allocated on the stack, which will last until the function returns.
+   Use of alloca should be avoided:
+     - inside arguments of function calls - undefined behaviour,
+     - in inline functions - the allocation may actually last until the
+       calling function returns,
+     - for huge N (say, N >= 65536) - you never know how large (or small)
+       the stack is, and when the stack cannot fulfill the memory allocation
+       request, the program just crashes.
+ */
+
+#ifndef alloca
+  /* Some version of mingw have an <alloca.h> that causes trouble when
+     included after 'alloca' gets defined as a macro.  As a workaround,
+     include this <alloca.h> first and define 'alloca' as a macro afterwards
+     if needed.  */
+# if defined __GNUC__ && (defined _WIN32 && ! defined __CYGWIN__) && @HAVE_ALLOCA_H@
+#  include_next <alloca.h>
+# endif
+#endif
+#ifndef alloca
+# if defined __GNUC__ || (__clang_major__ >= 4)
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif defined __DECC && defined __VMS
+#  define alloca __ALLOCA
+# elif defined __TANDEM && defined _TNS_E_TARGET
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *_alloca (unsigned short);
+#  pragma intrinsic (_alloca)
+#  define alloca _alloca
+# elif defined __MVS__
+#  include <stdlib.h>
+# else
+#  include <stddef.h>
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *alloca (size_t);
+# endif
+#endif
+
+#endif /* _GL_ALLOCA_H */
diff --git a/src/grep/lib/arg-nonnull.h b/src/grep/lib/arg-nonnull.h
new file mode 100644
index 0000000..b4de241
--- /dev/null
+++ b/src/grep/lib/arg-nonnull.h
@@ -0,0 +1,26 @@
+/* A C macro for declaring that specific arguments must not be NULL.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools
+   that the values passed as arguments n, ..., m must be non-NULL pointers.
+   n = 1 stands for the first argument, n = 2 for the second argument etc.  */
+#ifndef _GL_ARG_NONNULL
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || defined __clang__
+#  define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params))
+# else
+#  define _GL_ARG_NONNULL(params)
+# endif
+#endif
diff --git a/src/grep/lib/argmatch.c b/src/grep/lib/argmatch.c
new file mode 100644
index 0000000..dfdb4e3
--- /dev/null
+++ b/src/grep/lib/argmatch.c
@@ -0,0 +1,273 @@
+/* argmatch.c -- find a match for a string in an array
+
+   Copyright (C) 1990, 1998-1999, 2001-2007, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by David MacKenzie <djm@ai.mit.edu>
+   Modified by Akim Demaille <demaille@inf.enst.fr> */
+
+#include <config.h>
+
+/* Specification.  */
+#include "argmatch.h"
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define _(msgid) gettext (msgid)
+
+#include "error.h"
+#include "quotearg.h"
+#include "getprogname.h"
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
+
+/* When reporting an invalid argument, show nonprinting characters
+   by using the quoting style ARGMATCH_QUOTING_STYLE.  Do not use
+   literal_quoting_style.  */
+#ifndef ARGMATCH_QUOTING_STYLE
+# define ARGMATCH_QUOTING_STYLE locale_quoting_style
+#endif
+
+/* Non failing version of argmatch call this function after failing. */
+#ifndef ARGMATCH_DIE
+# include "exitfail.h"
+# define ARGMATCH_DIE exit (exit_failure)
+#endif
+
+#ifdef ARGMATCH_DIE_DECL
+ARGMATCH_DIE_DECL;
+#endif
+
+static void
+__argmatch_die (void)
+{
+  ARGMATCH_DIE;
+}
+
+/* Used by XARGMATCH and XARGCASEMATCH.  See description in argmatch.h.
+   Default to __argmatch_die, but allow caller to change this at run-time. */
+argmatch_exit_fn argmatch_die = __argmatch_die;
+
+
+/* If ARG is an unambiguous match for an element of the
+   NULL-terminated array ARGLIST, return the index in ARGLIST
+   of the matched element, else -1 if it does not match any element
+   or -2 if it is ambiguous (is a prefix of more than one element).
+
+   If VALLIST is none null, use it to resolve ambiguities limited to
+   synonyms, i.e., for
+     "yes", "yop" -> 0
+     "no", "nope" -> 1
+   "y" is a valid argument, for 0, and "n" for 1.  */
+
+ptrdiff_t
+argmatch (const char *arg, const char *const *arglist,
+          const void *vallist, size_t valsize)
+{
+  size_t i;                     /* Temporary index in ARGLIST.  */
+  size_t arglen;                /* Length of ARG.  */
+  ptrdiff_t matchind = -1;      /* Index of first nonexact match.  */
+  bool ambiguous = false;       /* If true, multiple nonexact match(es).  */
+
+  arglen = strlen (arg);
+
+  /* Test all elements for either exact match or abbreviated matches.  */
+  for (i = 0; arglist[i]; i++)
+    {
+      if (!strncmp (arglist[i], arg, arglen))
+        {
+          if (strlen (arglist[i]) == arglen)
+            /* Exact match found.  */
+            return i;
+          else if (matchind == -1)
+            /* First nonexact match found.  */
+            matchind = i;
+          else
+            {
+              /* Second nonexact match found.  */
+              if (vallist == NULL
+                  || memcmp ((char const *) vallist + valsize * matchind,
+                             (char const *) vallist + valsize * i, valsize))
+                {
+                  /* There is a real ambiguity, or we could not
+                     disambiguate. */
+                  ambiguous = true;
+                }
+            }
+        }
+    }
+  if (ambiguous)
+    return -2;
+  else
+    return matchind;
+}
+
+/* Error reporting for argmatch.
+   CONTEXT is a description of the type of entity that was being matched.
+   VALUE is the invalid value that was given.
+   PROBLEM is the return value from argmatch.  */
+
+void
+argmatch_invalid (const char *context, const char *value, ptrdiff_t problem)
+{
+  char const *format = (problem == -1
+                        ? _("invalid argument %s for %s")
+                        : _("ambiguous argument %s for %s"));
+
+  error (0, 0, format, quotearg_n_style (0, ARGMATCH_QUOTING_STYLE, value),
+         quote_n (1, context));
+}
+
+/* List the valid arguments for argmatch.
+   ARGLIST is the same as in argmatch.
+   VALLIST is a pointer to an array of values.
+   VALSIZE is the size of the elements of VALLIST */
+void
+argmatch_valid (const char *const *arglist,
+                const void *vallist, size_t valsize)
+{
+  size_t i;
+  const char *last_val = NULL;
+
+  /* We try to put synonyms on the same line.  The assumption is that
+     synonyms follow each other */
+  fputs (_("Valid arguments are:"), stderr);
+  for (i = 0; arglist[i]; i++)
+    if ((i == 0)
+        || memcmp (last_val, (char const *) vallist + valsize * i, valsize))
+      {
+        fprintf (stderr, "\n  - %s", quote (arglist[i]));
+        last_val = (char const *) vallist + valsize * i;
+      }
+    else
+      {
+        fprintf (stderr, ", %s", quote (arglist[i]));
+      }
+  putc ('\n', stderr);
+}
+
+/* Never failing versions of the previous functions.
+
+   CONTEXT is the context for which argmatch is called (e.g.,
+   "--version-control", or "$VERSION_CONTROL" etc.).  Upon failure,
+   calls the (supposed never to return) function EXIT_FN. */
+
+ptrdiff_t
+__xargmatch_internal (const char *context,
+                      const char *arg, const char *const *arglist,
+                      const void *vallist, size_t valsize,
+                      argmatch_exit_fn exit_fn)
+{
+  ptrdiff_t res = argmatch (arg, arglist, vallist, valsize);
+  if (res >= 0)
+    /* Success. */
+    return res;
+
+  /* We failed.  Explain why. */
+  argmatch_invalid (context, arg, res);
+  argmatch_valid (arglist, vallist, valsize);
+  (*exit_fn) ();
+
+  return -1; /* To please the compilers. */
+}
+
+/* Look for VALUE in VALLIST, an array of objects of size VALSIZE and
+   return the first corresponding argument in ARGLIST */
+const char *
+argmatch_to_argument (const void *value,
+                      const char *const *arglist,
+                      const void *vallist, size_t valsize)
+{
+  size_t i;
+
+  for (i = 0; arglist[i]; i++)
+    if (!memcmp (value, (char const *) vallist + valsize * i, valsize))
+      return arglist[i];
+  return NULL;
+}
+
+#ifdef TEST
+/*
+ * Based on "getversion.c" by David MacKenzie <djm@gnu.ai.mit.edu>
+ */
+
+/* When to make backup files.  */
+enum backup_type
+{
+  /* Never make backups.  */
+  no_backups,
+
+  /* Make simple backups of every file.  */
+  simple_backups,
+
+  /* Make numbered backups of files that already have numbered backups,
+     and simple backups of the others.  */
+  numbered_existing_backups,
+
+  /* Make numbered backups of every file.  */
+  numbered_backups
+};
+
+/* Two tables describing arguments (keys) and their corresponding
+   values */
+static const char *const backup_args[] =
+{
+  "no", "none", "off",
+  "simple", "never",
+  "existing", "nil",
+  "numbered", "t",
+  0
+};
+
+static const enum backup_type backup_vals[] =
+{
+  no_backups, no_backups, no_backups,
+  simple_backups, simple_backups,
+  numbered_existing_backups, numbered_existing_backups,
+  numbered_backups, numbered_backups
+};
+
+int
+main (int argc, const char *const *argv)
+{
+  const char *cp;
+  enum backup_type backup_type = no_backups;
+
+  if (argc > 2)
+    {
+      fprintf (stderr, "Usage: %s [VERSION_CONTROL]\n", getprogname ());
+      exit (1);
+    }
+
+  if ((cp = getenv ("VERSION_CONTROL")))
+    backup_type = XARGMATCH ("$VERSION_CONTROL", cp,
+                             backup_args, backup_vals);
+
+  if (argc == 2)
+    backup_type = XARGMATCH (getprogname (), argv[1],
+                             backup_args, backup_vals);
+
+  printf ("The version control is '%s'\n",
+          ARGMATCH_TO_ARGUMENT (&backup_type, backup_args, backup_vals));
+
+  return 0;
+}
+#endif
diff --git a/src/grep/lib/argmatch.h b/src/grep/lib/argmatch.h
new file mode 100644
index 0000000..3ef6813
--- /dev/null
+++ b/src/grep/lib/argmatch.h
@@ -0,0 +1,331 @@
+/* argmatch.h -- definitions and prototypes for argmatch.c
+
+   Copyright (C) 1990, 1998-1999, 2001-2002, 2004-2005, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by David MacKenzie <djm@ai.mit.edu>
+   Modified by Akim Demaille <demaille@inf.enst.fr> */
+
+#ifndef ARGMATCH_H_
+# define ARGMATCH_H_ 1
+
+# include <limits.h>
+# include <stdbool.h>
+# include <stddef.h>
+# include <stdio.h>
+# include <string.h> /* memcmp */
+
+# include "gettext.h"
+# include "quote.h"
+# include "verify.h"
+
+# ifdef  __cplusplus
+extern "C" {
+# endif
+
+# define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array))
+
+/* Assert there are as many real arguments as there are values
+   (argument list ends with a NULL guard).  */
+
+# define ARGMATCH_VERIFY(Arglist, Vallist) \
+    verify (ARRAY_CARDINALITY (Arglist) == ARRAY_CARDINALITY (Vallist) + 1)
+
+/* Return the index of the element of ARGLIST (NULL terminated) that
+   matches with ARG.  If VALLIST is not NULL, then use it to resolve
+   false ambiguities (i.e., different matches of ARG but corresponding
+   to the same values in VALLIST).  */
+
+ptrdiff_t argmatch (char const *arg, char const *const *arglist,
+                    void const *vallist, size_t valsize) _GL_ATTRIBUTE_PURE;
+
+# define ARGMATCH(Arg, Arglist, Vallist) \
+  argmatch (Arg, Arglist, (void const *) (Vallist), sizeof *(Vallist))
+
+/* xargmatch calls this function when it fails.  This function should not
+   return.  By default, this is a function that calls ARGMATCH_DIE which
+   in turn defaults to 'exit (exit_failure)'.  */
+typedef void (*argmatch_exit_fn) (void);
+extern argmatch_exit_fn argmatch_die;
+
+/* Report on stderr why argmatch failed.  Report correct values. */
+
+void argmatch_invalid (char const *context, char const *value,
+                       ptrdiff_t problem);
+
+/* Left for compatibility with the old name invalid_arg */
+
+# define invalid_arg(Context, Value, Problem) \
+  argmatch_invalid (Context, Value, Problem)
+
+
+
+/* Report on stderr the list of possible arguments.  */
+
+void argmatch_valid (char const *const *arglist,
+                     void const *vallist, size_t valsize);
+
+# define ARGMATCH_VALID(Arglist, Vallist) \
+  argmatch_valid (Arglist, (void const *) (Vallist), sizeof *(Vallist))
+
+
+
+/* Same as argmatch, but upon failure, report an explanation of the
+   failure, and exit using the function EXIT_FN. */
+
+ptrdiff_t __xargmatch_internal (char const *context,
+                                char const *arg, char const *const *arglist,
+                                void const *vallist, size_t valsize,
+                                argmatch_exit_fn exit_fn);
+
+/* Programmer friendly interface to __xargmatch_internal. */
+
+# define XARGMATCH(Context, Arg, Arglist, Vallist)              \
+  ((Vallist) [__xargmatch_internal (Context, Arg, Arglist,      \
+                                    (void const *) (Vallist),   \
+                                    sizeof *(Vallist),          \
+                                    argmatch_die)])
+
+/* Convert a value into a corresponding argument. */
+
+char const *argmatch_to_argument (void const *value,
+                                  char const *const *arglist,
+                                  void const *vallist, size_t valsize)
+  _GL_ATTRIBUTE_PURE;
+
+# define ARGMATCH_TO_ARGUMENT(Value, Arglist, Vallist)                  \
+  argmatch_to_argument (Value, Arglist,                                 \
+                        (void const *) (Vallist), sizeof *(Vallist))
+
+# define ARGMATCH_DEFINE_GROUP(Name, Type)                              \
+  /* The type of the values of this group.  */                          \
+  typedef Type argmatch_##Name##_type;                                  \
+                                                                        \
+  /* The size of the type of the values of this group. */               \
+  enum argmatch_##Name##_size_enum                                      \
+  {                                                                     \
+    argmatch_##Name##_size = sizeof (argmatch_##Name##_type)            \
+  };                                                                    \
+                                                                        \
+  /* Argument mapping of this group.  */                                \
+  typedef struct                                                        \
+  {                                                                     \
+    /* Argument (e.g., "simple").  */                                   \
+    const char *arg;                                                    \
+    /* Value (e.g., simple_backups).  */                                \
+    const argmatch_##Name##_type val;                                   \
+  } argmatch_##Name##_arg;                                              \
+                                                                        \
+  /* Documentation of this group.  */                                   \
+  typedef struct                                                        \
+  {                                                                     \
+    /* Argument (e.g., "simple").  */                                   \
+    const char *arg;                                                    \
+    /* Documentation (e.g., N_("always make simple backups")).  */      \
+    const char *doc;                                                    \
+  } argmatch_##Name##_doc;                                              \
+                                                                        \
+  /* All the features of an argmatch group.  */                         \
+  typedef struct                                                        \
+  {                                                                     \
+    const argmatch_##Name##_arg* args;                                  \
+    const argmatch_##Name##_doc* docs;                                  \
+                                                                        \
+    /* Printed before the usage message.  */                            \
+    const char *doc_pre;                                                \
+    /* Printed after the usage message.  */                             \
+    const char *doc_post;                                               \
+  } argmatch_##Name##_group_type;                                       \
+                                                                        \
+  /* The structure the user must build.  */                             \
+  extern const argmatch_##Name##_group_type argmatch_##Name##_group;    \
+                                                                        \
+  /* Print the documentation of this group.  */                         \
+  void argmatch_##Name##_usage (FILE *out);                             \
+                                                                        \
+  /* If nonnegative, the index I of ARG in ARGS, i.e,                   \
+     ARGS[I] == ARG.                                                    \
+     Return -1 for invalid argument, -2 for ambiguous argument. */      \
+  ptrdiff_t argmatch_##Name##_choice (const char *arg);                 \
+                                                                        \
+  /* A pointer to the corresponding value if it exists, or              \
+     report an error and exit with failure if the argument was          \
+     not recognized. */                                                 \
+  const argmatch_##Name##_type*                                         \
+  argmatch_##Name##_value (const char *context, const char *arg);       \
+                                                                        \
+  /* The first argument in ARGS that matches this value, or NULL.  */   \
+  const char *                                                          \
+  argmatch_##Name##_argument (const argmatch_##Name##_type *val);       \
+                                                                        \
+  ptrdiff_t                                                             \
+  argmatch_##Name##_choice (const char *arg)                            \
+  {                                                                     \
+    const argmatch_##Name##_group_type *g = &argmatch_##Name##_group;   \
+    size_t size = argmatch_##Name##_size;                               \
+    ptrdiff_t res = -1;      /* Index of first nonexact match.  */      \
+    bool ambiguous = false;  /* Whether multiple nonexact match(es). */ \
+    size_t arglen = strlen (arg);                                       \
+                                                                        \
+    /* Test all elements for either exact match or abbreviated          \
+       matches.  */                                                     \
+    for (size_t i = 0; g->args[i].arg; i++)                             \
+      if (!strncmp (g->args[i].arg, arg, arglen))                       \
+        {                                                               \
+          if (strlen (g->args[i].arg) == arglen)                        \
+            /* Exact match found.  */                                   \
+            return i;                                                   \
+          else if (res == -1)                                           \
+            /* First nonexact match found.  */                          \
+            res = i;                                                    \
+          else if (memcmp (&g->args[res].val, &g->args[i].val, size))   \
+            /* Second nonexact match found.  */                         \
+            /* There is a real ambiguity, or we could not               \
+               disambiguate. */                                         \
+            ambiguous = true;                                           \
+        }                                                               \
+    return ambiguous ? -2 : res;                                        \
+  }                                                                     \
+                                                                        \
+  const char *                                                          \
+  argmatch_##Name##_argument (const argmatch_##Name##_type *val)        \
+  {                                                                     \
+    const argmatch_##Name##_group_type *g = &argmatch_##Name##_group;   \
+    size_t size = argmatch_##Name##_size;                               \
+    for (size_t i = 0; g->args[i].arg; i++)                             \
+      if (!memcmp (val, &g->args[i].val, size))                         \
+        return g->args[i].arg;                                          \
+    return NULL;                                                        \
+  }                                                                     \
+                                                                        \
+  /* List the valid values of this group. */                            \
+  static void                                                           \
+  argmatch_##Name##_valid (FILE *out)                                   \
+  {                                                                     \
+    const argmatch_##Name##_group_type *g = &argmatch_##Name##_group;   \
+    size_t size = argmatch_##Name##_size;                               \
+                                                                        \
+    /* Try to put synonyms on the same line.  Synonyms are expected     \
+       to follow each other. */                                         \
+    fputs (gettext ("Valid arguments are:"), out);                      \
+    for (int i = 0; g->args[i].arg; i++)                                \
+      if (i == 0                                                        \
+          || memcmp (&g->args[i-1].val, &g->args[i].val, size))         \
+        fprintf (out, "\n  - %s", quote (g->args[i].arg));              \
+      else                                                              \
+        fprintf (out, ", %s", quote (g->args[i].arg));                  \
+    putc ('\n', out);                                                   \
+  }                                                                     \
+                                                                        \
+  const argmatch_##Name##_type*                                         \
+  argmatch_##Name##_value (const char *context, const char *arg)        \
+  {                                                                     \
+    const argmatch_##Name##_group_type *g = &argmatch_##Name##_group;   \
+    ptrdiff_t res = argmatch_##Name##_choice (arg);                     \
+    if (res < 0)                                                        \
+      {                                                                 \
+        argmatch_invalid (context, arg, res);                           \
+        argmatch_##Name##_valid (stderr);                               \
+        argmatch_die ();                                                \
+      }                                                                 \
+    return &g->args[res].val;                                           \
+  }                                                                     \
+                                                                        \
+  /* The column in which the documentation is displayed.                \
+     The leftmost possible, but no more than 20. */                     \
+  static int                                                            \
+  argmatch_##Name##_doc_col (void)                                      \
+  {                                                                     \
+    const argmatch_##Name##_group_type *g = &argmatch_##Name##_group;   \
+    size_t size = argmatch_##Name##_size;                               \
+    int res = 0;                                                        \
+    for (int i = 0; g->docs[i].arg; ++i)                                \
+      {                                                                 \
+        int col = 4;                                                    \
+        int ival = argmatch_##Name##_choice (g->docs[i].arg);           \
+        if (ival < 0)                                                   \
+          /* Pseudo argument, display it. */                            \
+          col += strlen (g->docs[i].arg);                               \
+        else                                                            \
+          /* Genuine argument, display it with its synonyms. */         \
+          for (int j = 0; g->args[j].arg; ++j)                          \
+            if (! memcmp (&g->args[ival].val, &g->args[j].val, size))   \
+              col += (col == 4 ? 0 : 2) + strlen (g->args[j].arg);      \
+        if (res <= col)                                                 \
+          res = col <= 20 ? col : 20;                                   \
+      }                                                                 \
+    return res ? res : 20;                                              \
+  }                                                                     \
+                                                                        \
+  void                                                                  \
+  argmatch_##Name##_usage (FILE *out)                                   \
+  {                                                                     \
+    const argmatch_##Name##_group_type *g = &argmatch_##Name##_group;   \
+    size_t size = argmatch_##Name##_size;                               \
+    /* Width of the screen.  Help2man does not seem to support          \
+       arguments on several lines, so in that case pretend a very       \
+       large width. */                                                  \
+    const int screen_width = getenv ("HELP2MAN") ? INT_MAX : 80;        \
+    if (g->doc_pre)                                                     \
+      fprintf (out, "%s\n", gettext (g->doc_pre));                      \
+    int doc_col = argmatch_##Name##_doc_col ();                         \
+    for (int i = 0; g->docs[i].arg; ++i)                                \
+      {                                                                 \
+        int col = 0;                                                    \
+        bool first = true;                                              \
+        int ival = argmatch_##Name##_choice (g->docs[i].arg);           \
+        if (ival < 0)                                                   \
+          /* Pseudo argument, display it. */                            \
+          col += fprintf (out,  "  %s", g->docs[i].arg);                \
+        else                                                            \
+          /* Genuine argument, display it with its synonyms. */         \
+          for (int j = 0; g->args[j].arg; ++j)                          \
+            if (! memcmp (&g->args[ival].val, &g->args[j].val, size))   \
+              {                                                         \
+                if (!first                                              \
+                    && screen_width < col + 2 + strlen (g->args[j].arg)) \
+                  {                                                     \
+                    fprintf (out, ",\n");                               \
+                    col = 0;                                            \
+                    first = true;                                       \
+                  }                                                     \
+                if (first)                                              \
+                  {                                                     \
+                    col += fprintf (out, " ");                          \
+                    first = false;                                      \
+                  }                                                     \
+                else                                                    \
+                  col += fprintf (out, ",");                            \
+                col += fprintf (out,  " %s", g->args[j].arg);           \
+              }                                                         \
+        /* The doc.  Separated by at least two spaces. */               \
+        if (doc_col < col + 2)                                          \
+          {                                                             \
+            fprintf (out, "\n");                                        \
+            col = 0;                                                    \
+          }                                                             \
+        fprintf (out, "%*s%s\n",                                        \
+                 doc_col - col, "", gettext (g->docs[i].doc));          \
+      }                                                                 \
+    if (g->doc_post)                                                    \
+      fprintf (out, "%s\n", gettext (g->doc_post));                     \
+  }
+
+# ifdef  __cplusplus
+}
+# endif
+
+#endif /* ARGMATCH_H_ */
diff --git a/src/grep/lib/assure.h b/src/grep/lib/assure.h
new file mode 100644
index 0000000..49aa82f
--- /dev/null
+++ b/src/grep/lib/assure.h
@@ -0,0 +1,57 @@
+/* Run-time assert-like macros.
+
+   Copyright (C) 2014-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#ifndef _GL_ASSURE_H
+#define _GL_ASSURE_H
+
+#include <assert.h>
+#include "verify.h"
+
+/* Evaluate an assertion E that is guaranteed to be true.
+   If NDEBUG is not defined, abort the program if E is false.
+   If NDEBUG is defined, the compiler can assume E and behavior is
+   undefined if E is false, fails to evaluate, or has side effects.
+
+   Unlike standard 'assert', this macro evaluates E even when NDEBUG
+   is defined, so as to catch typos, avoid some GCC warnings, and
+   improve performance when E is simple enough.
+
+   Also see the documentation for 'assume' in verify.h.  */
+
+#ifdef NDEBUG
+# define affirm(E) assume (E)
+#else
+# define affirm(E) assert (E)
+#endif
+
+/* Check E's value at runtime, and report an error and abort if not.
+   However, do nothing if NDEBUG is defined.
+
+   Unlike standard 'assert', this macro compiles E even when NDEBUG
+   is defined, so as to catch typos and avoid some GCC warnings.
+   Unlike 'affirm', it is OK for E to use hard-to-optimize features,
+   since E is not executed if NDEBUG is defined.  */
+
+#ifdef NDEBUG
+# define assure(E) ((void) (0 && (E)))
+#else
+# define assure(E) assert (E)
+#endif
+
+#endif
diff --git a/src/grep/lib/at-func.c b/src/grep/lib/at-func.c
new file mode 100644
index 0000000..b6d9de7
--- /dev/null
+++ b/src/grep/lib/at-func.c
@@ -0,0 +1,146 @@
+/* Define at-style functions like fstatat, unlinkat, fchownat, etc.
+   Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#include "filename.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
+
+#ifdef GNULIB_SUPPORT_ONLY_AT_FDCWD
+# include <errno.h>
+# ifndef ENOTSUP
+#  define ENOTSUP EINVAL
+# endif
+#else
+# include "openat.h"
+# include "openat-priv.h"
+# include "save-cwd.h"
+#endif
+
+#ifdef AT_FUNC_USE_F1_COND
+# define CALL_FUNC(F)                           \
+  (flag == AT_FUNC_USE_F1_COND                  \
+    ? AT_FUNC_F1 (F AT_FUNC_POST_FILE_ARGS)     \
+    : AT_FUNC_F2 (F AT_FUNC_POST_FILE_ARGS))
+# define VALIDATE_FLAG(F)                       \
+  if (flag & ~AT_FUNC_USE_F1_COND)              \
+    {                                           \
+      errno = EINVAL;                           \
+      return FUNC_FAIL;                         \
+    }
+#else
+# define CALL_FUNC(F) (AT_FUNC_F1 (F AT_FUNC_POST_FILE_ARGS))
+# define VALIDATE_FLAG(F) /* empty */
+#endif
+
+#ifdef AT_FUNC_RESULT
+# define FUNC_RESULT AT_FUNC_RESULT
+#else
+# define FUNC_RESULT int
+#endif
+
+#ifdef AT_FUNC_FAIL
+# define FUNC_FAIL AT_FUNC_FAIL
+#else
+# define FUNC_FAIL -1
+#endif
+
+/* Call AT_FUNC_F1 to operate on FILE, which is in the directory
+   open on descriptor FD.  If AT_FUNC_USE_F1_COND is defined to a value,
+   AT_FUNC_POST_FILE_PARAM_DECLS must include a parameter named flag;
+   call AT_FUNC_F2 if FLAG is 0 or fail if FLAG contains more bits than
+   AT_FUNC_USE_F1_COND.  Return int and fail with -1 unless AT_FUNC_RESULT
+   or AT_FUNC_FAIL are defined.  If possible, do it without changing the
+   working directory.  Otherwise, resort to using save_cwd/fchdir,
+   then AT_FUNC_F?/restore_cwd.  If either the save_cwd or the restore_cwd
+   fails, then give a diagnostic and exit nonzero.  */
+FUNC_RESULT
+AT_FUNC_NAME (int fd, char const *file AT_FUNC_POST_FILE_PARAM_DECLS)
+{
+  VALIDATE_FLAG (flag);
+
+  if (fd == AT_FDCWD || IS_ABSOLUTE_FILE_NAME (file))
+    return CALL_FUNC (file);
+
+#ifdef GNULIB_SUPPORT_ONLY_AT_FDCWD
+  errno = ENOTSUP;
+  return FUNC_FAIL;
+#else
+  {
+  /* Be careful to choose names unlikely to conflict with
+     AT_FUNC_POST_FILE_PARAM_DECLS.  */
+  struct saved_cwd saved_cwd;
+  int saved_errno;
+  FUNC_RESULT err;
+
+  {
+    char proc_buf[OPENAT_BUFFER_SIZE];
+    char *proc_file = openat_proc_name (proc_buf, fd, file);
+    if (proc_file)
+      {
+        FUNC_RESULT proc_result = CALL_FUNC (proc_file);
+        int proc_errno = errno;
+        if (proc_file != proc_buf)
+          free (proc_file);
+        /* If the syscall succeeds, or if it fails with an unexpected
+           errno value, then return right away.  Otherwise, fall through
+           and resort to using save_cwd/restore_cwd.  */
+        if (FUNC_FAIL != proc_result)
+          return proc_result;
+        if (! EXPECTED_ERRNO (proc_errno))
+          {
+            errno = proc_errno;
+            return proc_result;
+          }
+      }
+  }
+
+  if (save_cwd (&saved_cwd) != 0)
+    openat_save_fail (errno);
+  if (0 <= fd && fd == saved_cwd.desc)
+    {
+      /* If saving the working directory collides with the user's
+         requested fd, then the user's fd must have been closed to
+         begin with.  */
+      free_cwd (&saved_cwd);
+      errno = EBADF;
+      return FUNC_FAIL;
+    }
+
+  if (fchdir (fd) != 0)
+    {
+      saved_errno = errno;
+      free_cwd (&saved_cwd);
+      errno = saved_errno;
+      return FUNC_FAIL;
+    }
+
+  err = CALL_FUNC (file);
+  saved_errno = (err == FUNC_FAIL ? errno : 0);
+
+  if (restore_cwd (&saved_cwd) != 0)
+    openat_restore_fail (errno);
+
+  free_cwd (&saved_cwd);
+
+  if (saved_errno)
+    errno = saved_errno;
+  return err;
+  }
+#endif
+}
+#undef CALL_FUNC
+#undef FUNC_RESULT
+#undef FUNC_FAIL
diff --git a/src/grep/lib/attribute.h b/src/grep/lib/attribute.h
new file mode 100644
index 0000000..80a23f5
--- /dev/null
+++ b/src/grep/lib/attribute.h
@@ -0,0 +1,218 @@
+/* ATTRIBUTE_* macros for using attributes in GCC and similar compilers
+
+   Copyright 2020-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+/* Provide public ATTRIBUTE_* names for the private _GL_ATTRIBUTE_*
+   macros used within Gnulib.  */
+
+/* These attributes can be placed in two ways:
+     - At the start of a declaration (i.e. even before storage-class
+       specifiers!); then they apply to all entities that are declared
+       by the declaration.
+     - Immediately after the name of an entity being declared by the
+       declaration; then they apply to that entity only.  */
+
+#ifndef _GL_ATTRIBUTE_H
+#define _GL_ATTRIBUTE_H
+
+
+/* This file defines two types of attributes:
+   * C2x standard attributes.  These have macro names that do not begin with
+     'ATTRIBUTE_'.
+   * Selected GCC attributes; see:
+     https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html
+     https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html
+     https://gcc.gnu.org/onlinedocs/gcc/Common-Type-Attributes.html
+     These names begin with 'ATTRIBUTE_' to avoid name clashes.  */
+
+
+/* =============== Attributes for specific kinds of functions =============== */
+
+/* Attributes for functions that should not be used.  */
+
+/* Warn if the entity is used.  */
+/* Applies to:
+     - function, variable,
+     - struct, union, struct/union member,
+     - enumeration, enumeration item,
+     - typedef,
+   in C++ also: namespace, class, template specialization.  */
+#define DEPRECATED _GL_ATTRIBUTE_DEPRECATED
+
+/* If a function call is not optimized way, warn with MSG.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_WARNING(msg) _GL_ATTRIBUTE_WARNING (msg)
+
+/* If a function call is not optimized way, report an error with MSG.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_ERROR(msg) _GL_ATTRIBUTE_ERROR (msg)
+
+
+/* Attributes for memory-allocating functions.  */
+
+/* The function returns a pointer to freshly allocated memory.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_MALLOC _GL_ATTRIBUTE_MALLOC
+
+/* ATTRIBUTE_ALLOC_SIZE ((N)) - The Nth argument of the function
+   is the size of the returned memory block.
+   ATTRIBUTE_ALLOC_SIZE ((M, N)) - Multiply the Mth and Nth arguments
+   to determine the size of the returned memory block.  */
+/* Applies to: function, pointer to function, function types.  */
+#define ATTRIBUTE_ALLOC_SIZE(args) _GL_ATTRIBUTE_ALLOC_SIZE (args)
+
+
+/* Attributes for variadic functions.  */
+
+/* The variadic function expects a trailing NULL argument.
+   ATTRIBUTE_SENTINEL () - The last argument is NULL (requires C99).
+   ATTRIBUTE_SENTINEL ((N)) - The (N+1)st argument from the end is NULL.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_SENTINEL(pos) _GL_ATTRIBUTE_SENTINEL (pos)
+
+
+/* ================== Attributes for compiler diagnostics ================== */
+
+/* Attributes that help the compiler diagnose programmer mistakes.
+   Some of them may also help for some compiler optimizations.  */
+
+/* ATTRIBUTE_FORMAT ((ARCHETYPE, STRING-INDEX, FIRST-TO-CHECK)) -
+   The STRING-INDEXth function argument is a format string of style
+   ARCHETYPE, which is one of:
+     printf, gnu_printf
+     scanf, gnu_scanf,
+     strftime, gnu_strftime,
+     strfmon,
+   or the same thing prefixed and suffixed with '__'.
+   If FIRST-TO-CHECK is not 0, arguments starting at FIRST-TO_CHECK
+   are suitable for the format string.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_FORMAT(spec) _GL_ATTRIBUTE_FORMAT (spec)
+
+/* ATTRIBUTE_NONNULL ((N1, N2,...)) - Arguments N1, N2,... must not be NULL.
+   ATTRIBUTE_NONNULL () - All pointer arguments must not be null.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_NONNULL(args) _GL_ATTRIBUTE_NONNULL (args)
+
+/* The function's return value is a non-NULL pointer.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_RETURNS_NONNULL _GL_ATTRIBUTE_RETURNS_NONNULL
+
+/* Warn if the caller does not use the return value,
+   unless the caller uses something like ignore_value.  */
+/* Applies to: function, enumeration, class.  */
+#define NODISCARD _GL_ATTRIBUTE_NODISCARD
+
+
+/* Attributes that disable false alarms when the compiler diagnoses
+   programmer "mistakes".  */
+
+/* Do not warn if the entity is not used.  */
+/* Applies to:
+     - function, variable,
+     - struct, union, struct/union member,
+     - enumeration, enumeration item,
+     - typedef,
+   in C++ also: class.  */
+#define MAYBE_UNUSED _GL_ATTRIBUTE_MAYBE_UNUSED
+
+/* The contents of a character array is not meant to be NUL-terminated.  */
+/* Applies to: struct/union members and variables that are arrays of element
+   type '[[un]signed] char'.  */
+#define ATTRIBUTE_NONSTRING _GL_ATTRIBUTE_NONSTRING
+
+/* Do not warn if control flow falls through to the immediately
+   following 'case' or 'default' label.  */
+/* Applies to: Empty statement (;), inside a 'switch' statement.  */
+#define FALLTHROUGH _GL_ATTRIBUTE_FALLTHROUGH
+
+
+/* ================== Attributes for debugging information ================== */
+
+/* Attributes regarding debugging information emitted by the compiler.  */
+
+/* Omit the function from stack traces when debugging.  */
+/* Applies to: function.  */
+#define ATTRIBUTE_ARTIFICIAL _GL_ATTRIBUTE_ARTIFICIAL
+
+/* Make the entity visible to debuggers etc., even with '-fwhole-program'.  */
+/* Applies to: functions, variables.  */
+#define ATTRIBUTE_EXTERNALLY_VISIBLE _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
+
+
+/* ========== Attributes that mainly direct compiler optimizations ========== */
+
+/* The function does not throw exceptions.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_NOTHROW _GL_ATTRIBUTE_NOTHROW
+
+/* Do not inline the function.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_NOINLINE _GL_ATTRIBUTE_NOINLINE
+
+/* Always inline the function, and report an error if the compiler
+   cannot inline.  */
+/* Applies to: function.  */
+#define ATTRIBUTE_ALWAYS_INLINE _GL_ATTRIBUTE_ALWAYS_INLINE
+
+/* It is OK for a compiler to omit duplicate calls with the same arguments.
+   This attribute is safe for a function that neither depends on
+   nor affects observable state, and always returns exactly once -
+   e.g., does not loop forever, and does not call longjmp.
+   (This attribute is stricter than ATTRIBUTE_PURE.)  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_CONST _GL_ATTRIBUTE_CONST
+
+/* It is OK for a compiler to omit duplicate calls with the same
+   arguments if observable state is not changed between calls.
+   This attribute is safe for a function that does not affect
+   observable state, and always returns exactly once.
+   (This attribute is looser than ATTRIBUTE_CONST.)  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_PURE _GL_ATTRIBUTE_PURE
+
+/* The function is rarely executed.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_COLD _GL_ATTRIBUTE_COLD
+
+/* If called from some other compilation unit, the function executes
+   code from that unit only by return or by exception handling,
+   letting the compiler optimize that unit more aggressively.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_LEAF _GL_ATTRIBUTE_LEAF
+
+/* For struct members: The member has the smallest possible alignment.
+   For struct, union, class: All members have the smallest possible alignment,
+   minimizing the memory required.  */
+/* Applies to: struct members, struct, union,
+   in C++ also: class.  */
+#define ATTRIBUTE_PACKED _GL_ATTRIBUTE_PACKED
+
+
+/* ================ Attributes that make invalid code valid ================ */
+
+/* Attributes that prevent fatal compiler optimizations for code that is not
+   fully ISO C compliant.  */
+
+/* Pointers to the type may point to the same storage as pointers to
+   other types, thus disabling strict aliasing optimization.  */
+/* Applies to: types.  */
+#define ATTRIBUTE_MAY_ALIAS _GL_ATTRIBUTE_MAY_ALIAS
+
+
+#endif /* _GL_ATTRIBUTE_H */
diff --git a/src/grep/lib/basename-lgpl.c b/src/grep/lib/basename-lgpl.c
new file mode 100644
index 0000000..5dbd157
--- /dev/null
+++ b/src/grep/lib/basename-lgpl.c
@@ -0,0 +1,71 @@
+/* basename.c -- return the last element in a file name
+
+   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "basename-lgpl.h"
+
+#include <stdbool.h>
+#include <string.h>
+
+#include "filename.h"
+
+char *
+last_component (char const *name)
+{
+  char const *base = name + FILE_SYSTEM_PREFIX_LEN (name);
+  char const *p;
+  bool last_was_slash = false;
+
+  while (ISSLASH (*base))
+    base++;
+
+  for (p = base; *p; p++)
+    {
+      if (ISSLASH (*p))
+        last_was_slash = true;
+      else if (last_was_slash)
+        {
+          base = p;
+          last_was_slash = false;
+        }
+    }
+
+  return (char *) base;
+}
+
+size_t
+base_len (char const *name)
+{
+  size_t len;
+  size_t prefix_len = FILE_SYSTEM_PREFIX_LEN (name);
+
+  for (len = strlen (name);  1 < len && ISSLASH (name[len - 1]);  len--)
+    continue;
+
+  if (DOUBLE_SLASH_IS_DISTINCT_ROOT && len == 1
+      && ISSLASH (name[0]) && ISSLASH (name[1]) && ! name[2])
+    return 2;
+
+  if (FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE && prefix_len
+      && len == prefix_len && ISSLASH (name[prefix_len]))
+    return prefix_len + 1;
+
+  return len;
+}
diff --git a/src/grep/lib/basename-lgpl.h b/src/grep/lib/basename-lgpl.h
new file mode 100644
index 0000000..d520c09
--- /dev/null
+++ b/src/grep/lib/basename-lgpl.h
@@ -0,0 +1,78 @@
+/* Extract the last component (base name) of a file name.
+
+   Copyright (C) 1998, 2001, 2003-2006, 2009-2021 Free Software Foundation,
+   Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _BASENAME_LGPL_H
+#define _BASENAME_LGPL_H
+
+#include <stddef.h>
+
+#ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
+# define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Return the address of the last file name component of FILENAME.
+   If FILENAME has some trailing slash(es), they are considered to be
+   part of the last component.
+   If FILENAME has no relative file name components because it is a file
+   system root, return the empty string.
+   Examples:
+              FILENAME      RESULT
+              "foo.c"       "foo.c"
+              "foo/bar.c"   "bar.c"
+              "/foo/bar.c"  "bar.c"
+              "foo/bar/"    "bar/"
+              "foo/bar//"   "bar//"
+              "/"           ""
+              "//"          ""
+              ""            ""
+   The return value is a tail of the given FILENAME; do NOT free() it!  */
+
+/* This function was traditionally called 'basename', but we avoid this
+   function name because
+     * Various platforms have different functions in their libc.
+       In particular, the glibc basename(), defined in <string.h>, does
+       not consider trailing slashes to be part of the component:
+              FILENAME      RESULT
+              "foo/bar/"    ""
+              "foo/bar//"   ""
+     * The 'basename' command eliminates trailing slashes and for a root
+       produces a non-empty result:
+              FILENAME      RESULT
+              "foo/bar/"    "bar"
+              "foo/bar//"   "bar"
+              "/"           "/"
+              "//"          "/"
+ */
+extern char *last_component (char const *filename) _GL_ATTRIBUTE_PURE;
+
+/* Return the length of the basename FILENAME.
+   Typically FILENAME is the value returned by base_name or last_component.
+   Act like strlen (FILENAME), except omit all trailing slashes.  */
+extern size_t base_len (char const *filename) _GL_ATTRIBUTE_PURE;
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* _BASENAME_LGPL_H */
diff --git a/src/grep/lib/binary-io.c b/src/grep/lib/binary-io.c
new file mode 100644
index 0000000..adc0ae2
--- /dev/null
+++ b/src/grep/lib/binary-io.c
@@ -0,0 +1,39 @@
+/* Binary mode I/O.
+   Copyright 2017-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define BINARY_IO_INLINE _GL_EXTERN_INLINE
+#include "binary-io.h"
+
+#if defined __DJGPP__ || defined __EMX__
+# include <unistd.h>
+
+int
+set_binary_mode (int fd, int mode)
+{
+  if (isatty (fd))
+    /* If FD refers to a console (not a pipe, not a regular file),
+       O_TEXT is the only reasonable mode, both on input and on output.
+       Silently ignore the request.  If we were to return -1 here,
+       all programs that use xset_binary_mode would fail when run
+       with console input or console output.  */
+    return O_TEXT;
+  else
+    return __gl_setmode (fd, mode);
+}
+
+#endif
diff --git a/src/grep/lib/binary-io.h b/src/grep/lib/binary-io.h
new file mode 100644
index 0000000..9b785c1
--- /dev/null
+++ b/src/grep/lib/binary-io.h
@@ -0,0 +1,80 @@
+/* Binary mode I/O.
+   Copyright (C) 2001, 2003, 2005, 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _BINARY_H
+#define _BINARY_H
+
+/* For systems that distinguish between text and binary I/O.
+   O_BINARY is guaranteed by the gnulib <fcntl.h>. */
+#include <fcntl.h>
+
+/* The MSVC7 <stdio.h> doesn't like to be included after '#define fileno ...',
+   so we include it here first.  */
+#include <stdio.h>
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef BINARY_IO_INLINE
+# define BINARY_IO_INLINE _GL_INLINE
+#endif
+
+#if O_BINARY
+# if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__
+#  include <io.h> /* declares setmode() */
+#  define __gl_setmode setmode
+# else
+#  ifdef KMK_GREP
+#   include <io.h> /* declares _setmode() */
+#  endif
+#  define __gl_setmode _setmode
+#  undef fileno
+#  define fileno _fileno
+# endif
+#else
+  /* On reasonable systems, binary I/O is the only choice.  */
+  /* Use a function rather than a macro, to avoid gcc warnings
+     "warning: statement with no effect".  */
+BINARY_IO_INLINE int
+__gl_setmode (int fd _GL_UNUSED, int mode _GL_UNUSED)
+{
+  return O_BINARY;
+}
+#endif
+
+/* Set FD's mode to MODE, which should be either O_TEXT or O_BINARY.
+   Return the old mode if successful, -1 (setting errno) on failure.
+   Ordinarily this function would be called 'setmode', since that is
+   its old name on MS-Windows, but it is called 'set_binary_mode' here
+   to avoid colliding with a BSD function of another name.  */
+
+#if defined __DJGPP__ || defined __EMX__
+extern int set_binary_mode (int fd, int mode);
+#else
+BINARY_IO_INLINE int
+set_binary_mode (int fd, int mode)
+{
+  return __gl_setmode (fd, mode);
+}
+#endif
+
+/* This macro is obsolescent.  */
+#define SET_BINARY(fd) ((void) set_binary_mode (fd, O_BINARY))
+
+_GL_INLINE_HEADER_END
+
+#endif /* _BINARY_H */
diff --git a/src/grep/lib/bitrotate.c b/src/grep/lib/bitrotate.c
new file mode 100644
index 0000000..e8987f2
--- /dev/null
+++ b/src/grep/lib/bitrotate.c
@@ -0,0 +1,21 @@
+/* Rotate bits in integers.
+
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define BITROTATE_INLINE _GL_EXTERN_INLINE
+#include "bitrotate.h"
diff --git a/src/grep/lib/bitrotate.h b/src/grep/lib/bitrotate.h
new file mode 100644
index 0000000..ceb734a
--- /dev/null
+++ b/src/grep/lib/bitrotate.h
@@ -0,0 +1,138 @@
+/* bitrotate.h - Rotate bits in integers
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson <simon@josefsson.org>, 2008. */
+
+#ifndef _GL_BITROTATE_H
+#define _GL_BITROTATE_H
+
+#include <limits.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef BITROTATE_INLINE
+# define BITROTATE_INLINE _GL_INLINE
+#endif
+
+#ifdef UINT64_MAX
+/* Given an unsigned 64-bit argument X, return the value corresponding
+   to rotating the bits N steps to the left.  N must be between 1 and
+   63 inclusive. */
+BITROTATE_INLINE uint64_t
+rotl64 (uint64_t x, int n)
+{
+  return ((x << n) | (x >> (64 - n))) & UINT64_MAX;
+}
+
+/* Given an unsigned 64-bit argument X, return the value corresponding
+   to rotating the bits N steps to the right.  N must be between 1 to
+   63 inclusive.*/
+BITROTATE_INLINE uint64_t
+rotr64 (uint64_t x, int n)
+{
+  return ((x >> n) | (x << (64 - n))) & UINT64_MAX;
+}
+#endif
+
+/* Given an unsigned 32-bit argument X, return the value corresponding
+   to rotating the bits N steps to the left.  N must be between 1 and
+   31 inclusive. */
+BITROTATE_INLINE uint32_t
+rotl32 (uint32_t x, int n)
+{
+  return ((x << n) | (x >> (32 - n))) & UINT32_MAX;
+}
+
+/* Given an unsigned 32-bit argument X, return the value corresponding
+   to rotating the bits N steps to the right.  N must be between 1 to
+   31 inclusive.*/
+BITROTATE_INLINE uint32_t
+rotr32 (uint32_t x, int n)
+{
+  return ((x >> n) | (x << (32 - n))) & UINT32_MAX;
+}
+
+/* Given a size_t argument X, return the value corresponding
+   to rotating the bits N steps to the left.  N must be between 1 and
+   (CHAR_BIT * sizeof (size_t) - 1) inclusive.  */
+BITROTATE_INLINE size_t
+rotl_sz (size_t x, int n)
+{
+  return ((x << n) | (x >> ((CHAR_BIT * sizeof x) - n))) & SIZE_MAX;
+}
+
+/* Given a size_t argument X, return the value corresponding
+   to rotating the bits N steps to the right.  N must be between 1 to
+   (CHAR_BIT * sizeof (size_t) - 1) inclusive.  */
+BITROTATE_INLINE size_t
+rotr_sz (size_t x, int n)
+{
+  return ((x >> n) | (x << ((CHAR_BIT * sizeof x) - n))) & SIZE_MAX;
+}
+
+/* Given an unsigned 16-bit argument X, return the value corresponding
+   to rotating the bits N steps to the left.  N must be between 1 to
+   15 inclusive, but on most relevant targets N can also be 0 and 16
+   because 'int' is at least 32 bits and the arguments must widen
+   before shifting. */
+BITROTATE_INLINE uint16_t
+rotl16 (uint16_t x, int n)
+{
+  return (((unsigned int) x << n) | ((unsigned int) x >> (16 - n)))
+         & UINT16_MAX;
+}
+
+/* Given an unsigned 16-bit argument X, return the value corresponding
+   to rotating the bits N steps to the right.  N must be in 1 to 15
+   inclusive, but on most relevant targets N can also be 0 and 16
+   because 'int' is at least 32 bits and the arguments must widen
+   before shifting. */
+BITROTATE_INLINE uint16_t
+rotr16 (uint16_t x, int n)
+{
+  return (((unsigned int) x >> n) | ((unsigned int) x << (16 - n)))
+         & UINT16_MAX;
+}
+
+/* Given an unsigned 8-bit argument X, return the value corresponding
+   to rotating the bits N steps to the left.  N must be between 1 to 7
+   inclusive, but on most relevant targets N can also be 0 and 8
+   because 'int' is at least 32 bits and the arguments must widen
+   before shifting. */
+BITROTATE_INLINE uint8_t
+rotl8 (uint8_t x, int n)
+{
+  return (((unsigned int) x << n) | ((unsigned int) x >> (8 - n))) & UINT8_MAX;
+}
+
+/* Given an unsigned 8-bit argument X, return the value corresponding
+   to rotating the bits N steps to the right.  N must be in 1 to 7
+   inclusive, but on most relevant targets N can also be 0 and 8
+   because 'int' is at least 32 bits and the arguments must widen
+   before shifting. */
+BITROTATE_INLINE uint8_t
+rotr8 (uint8_t x, int n)
+{
+  return (((unsigned int) x >> n) | ((unsigned int) x << (8 - n))) & UINT8_MAX;
+}
+
+_GL_INLINE_HEADER_END
+
+#endif /* _GL_BITROTATE_H */
diff --git a/src/grep/lib/btowc.c b/src/grep/lib/btowc.c
new file mode 100644
index 0000000..b8239af
--- /dev/null
+++ b/src/grep/lib/btowc.c
@@ -0,0 +1,39 @@
+/* Convert unibyte character to wide character.
+   Copyright (C) 2008, 2010-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wchar.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+wint_t
+btowc (int c)
+{
+  if (c != EOF)
+    {
+      char buf[1];
+      wchar_t wc;
+
+      buf[0] = c;
+      if (mbtowc (&wc, buf, 1) >= 0)
+        return wc;
+    }
+  return WEOF;
+}
diff --git a/src/grep/lib/c++defs.h b/src/grep/lib/c++defs.h
new file mode 100644
index 0000000..a47b61a
--- /dev/null
+++ b/src/grep/lib/c++defs.h
@@ -0,0 +1,331 @@
+/* C++ compatible function declaration macros.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_CXXDEFS_H
+#define _GL_CXXDEFS_H
+
+/* Begin/end the GNULIB_NAMESPACE namespace.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_BEGIN_NAMESPACE namespace GNULIB_NAMESPACE {
+# define _GL_END_NAMESPACE }
+#else
+# define _GL_BEGIN_NAMESPACE
+# define _GL_END_NAMESPACE
+#endif
+
+/* The three most frequent use cases of these macros are:
+
+   * For providing a substitute for a function that is missing on some
+     platforms, but is declared and works fine on the platforms on which
+     it exists:
+
+       #if @GNULIB_FOO@
+       # if !@HAVE_FOO@
+       _GL_FUNCDECL_SYS (foo, ...);
+       # endif
+       _GL_CXXALIAS_SYS (foo, ...);
+       _GL_CXXALIASWARN (foo);
+       #elif defined GNULIB_POSIXCHECK
+       ...
+       #endif
+
+   * For providing a replacement for a function that exists on all platforms,
+     but is broken/insufficient and needs to be replaced on some platforms:
+
+       #if @GNULIB_FOO@
+       # if @REPLACE_FOO@
+       #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+       #   undef foo
+       #   define foo rpl_foo
+       #  endif
+       _GL_FUNCDECL_RPL (foo, ...);
+       _GL_CXXALIAS_RPL (foo, ...);
+       # else
+       _GL_CXXALIAS_SYS (foo, ...);
+       # endif
+       _GL_CXXALIASWARN (foo);
+       #elif defined GNULIB_POSIXCHECK
+       ...
+       #endif
+
+   * For providing a replacement for a function that exists on some platforms
+     but is broken/insufficient and needs to be replaced on some of them and
+     is additionally either missing or undeclared on some other platforms:
+
+       #if @GNULIB_FOO@
+       # if @REPLACE_FOO@
+       #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+       #   undef foo
+       #   define foo rpl_foo
+       #  endif
+       _GL_FUNCDECL_RPL (foo, ...);
+       _GL_CXXALIAS_RPL (foo, ...);
+       # else
+       #  if !@HAVE_FOO@   or   if !@HAVE_DECL_FOO@
+       _GL_FUNCDECL_SYS (foo, ...);
+       #  endif
+       _GL_CXXALIAS_SYS (foo, ...);
+       # endif
+       _GL_CXXALIASWARN (foo);
+       #elif defined GNULIB_POSIXCHECK
+       ...
+       #endif
+*/
+
+/* _GL_EXTERN_C declaration;
+   performs the declaration with C linkage.  */
+#if defined __cplusplus
+# define _GL_EXTERN_C extern "C"
+#else
+# define _GL_EXTERN_C extern
+#endif
+
+/* _GL_FUNCDECL_RPL (func, rettype, parameters_and_attributes);
+   declares a replacement function, named rpl_func, with the given prototype,
+   consisting of return type, parameters, and attributes.
+   Example:
+     _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
+                                  _GL_ARG_NONNULL ((1)));
+ */
+#define _GL_FUNCDECL_RPL(func,rettype,parameters_and_attributes) \
+  _GL_FUNCDECL_RPL_1 (rpl_##func, rettype, parameters_and_attributes)
+#define _GL_FUNCDECL_RPL_1(rpl_func,rettype,parameters_and_attributes) \
+  _GL_EXTERN_C rettype rpl_func parameters_and_attributes
+
+/* _GL_FUNCDECL_SYS (func, rettype, parameters_and_attributes);
+   declares the system function, named func, with the given prototype,
+   consisting of return type, parameters, and attributes.
+   Example:
+     _GL_FUNCDECL_SYS (open, int, (const char *filename, int flags, ...)
+                                  _GL_ARG_NONNULL ((1)));
+ */
+#define _GL_FUNCDECL_SYS(func,rettype,parameters_and_attributes) \
+  _GL_EXTERN_C rettype func parameters_and_attributes
+
+/* _GL_CXXALIAS_RPL (func, rettype, parameters);
+   declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to rpl_func, if GNULIB_NAMESPACE is defined.
+   Example:
+     _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
+
+   Wrapping rpl_func in an object with an inline conversion operator
+   avoids a reference to rpl_func unless GNULIB_NAMESPACE::func is
+   actually used in the program.  */
+#define _GL_CXXALIAS_RPL(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_1 (func, rpl_##func, rettype, parameters)
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                                \
+    {                                                         \
+      static const struct _gl_ ## func ## _wrapper            \
+      {                                                       \
+        typedef rettype (*type) parameters;                   \
+                                                              \
+        inline operator type () const                         \
+        {                                                     \
+          return ::rpl_func;                                  \
+        }                                                     \
+      } func = {};                                            \
+    }                                                         \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_MDA (func, rettype, parameters);
+   is to be used when func is a Microsoft deprecated alias, on native Windows.
+   It declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to _func, if GNULIB_NAMESPACE is defined.
+   Example:
+     _GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
+ */
+#define _GL_CXXALIAS_MDA(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_1 (func, _##func, rettype, parameters)
+
+/* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters);
+   is like  _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters);
+   except that the C function rpl_func may have a slightly different
+   declaration.  A cast is used to silence the "invalid conversion" error
+   that would otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                                     \
+    {                                                              \
+      static const struct _gl_ ## func ## _wrapper                 \
+      {                                                            \
+        typedef rettype (*type) parameters;                        \
+                                                                   \
+        inline operator type () const                              \
+        {                                                          \
+          return reinterpret_cast<type>(::rpl_func);               \
+        }                                                          \
+      } func = {};                                                 \
+    }                                                              \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_MDA_CAST (func, rettype, parameters);
+   is like  _GL_CXXALIAS_MDA (func, rettype, parameters);
+   except that the C function func may have a slightly different declaration.
+   A cast is used to silence the "invalid conversion" error that would
+   otherwise occur.  */
+#define _GL_CXXALIAS_MDA_CAST(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_CAST_1 (func, _##func, rettype, parameters)
+
+/* _GL_CXXALIAS_SYS (func, rettype, parameters);
+   declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to the system provided function func, if GNULIB_NAMESPACE
+   is defined.
+   Example:
+     _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
+
+   Wrapping func in an object with an inline conversion operator
+   avoids a reference to func unless GNULIB_NAMESPACE::func is
+   actually used in the program.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_SYS(func,rettype,parameters)            \
+    namespace GNULIB_NAMESPACE                                \
+    {                                                         \
+      static const struct _gl_ ## func ## _wrapper            \
+      {                                                       \
+        typedef rettype (*type) parameters;                   \
+                                                              \
+        inline operator type () const                         \
+        {                                                     \
+          return ::func;                                      \
+        }                                                     \
+      } func = {};                                            \
+    }                                                         \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS(func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_SYS_CAST (func, rettype, parameters);
+   is like  _GL_CXXALIAS_SYS (func, rettype, parameters);
+   except that the C function func may have a slightly different declaration.
+   A cast is used to silence the "invalid conversion" error that would
+   otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                          \
+    {                                                   \
+      static const struct _gl_ ## func ## _wrapper      \
+      {                                                 \
+        typedef rettype (*type) parameters;             \
+                                                        \
+        inline operator type () const                   \
+        {                                               \
+          return reinterpret_cast<type>(::func);        \
+        }                                               \
+      } func = {};                                      \
+    }                                                   \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_SYS_CAST2 (func, rettype, parameters, rettype2, parameters2);
+   is like  _GL_CXXALIAS_SYS (func, rettype, parameters);
+   except that the C function is picked among a set of overloaded functions,
+   namely the one with rettype2 and parameters2.  Two consecutive casts
+   are used to silence the "cannot find a match" and "invalid conversion"
+   errors that would otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+  /* The outer cast must be a reinterpret_cast.
+     The inner cast: When the function is defined as a set of overloaded
+     functions, it works as a static_cast<>, choosing the designated variant.
+     When the function is defined as a single variant, it works as a
+     reinterpret_cast<>. The parenthesized cast syntax works both ways.  */
+# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
+    namespace GNULIB_NAMESPACE                                                \
+    {                                                                         \
+      static const struct _gl_ ## func ## _wrapper                            \
+      {                                                                       \
+        typedef rettype (*type) parameters;                                   \
+                                                                              \
+        inline operator type () const                                         \
+        {                                                                     \
+          return reinterpret_cast<type>((rettype2 (*) parameters2)(::func));  \
+        }                                                                     \
+      } func = {};                                                            \
+    }                                                                         \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIASWARN (func);
+   causes a warning to be emitted when ::func is used but not when
+   GNULIB_NAMESPACE::func is used.  func must be defined without overloaded
+   variants.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIASWARN(func) \
+   _GL_CXXALIASWARN_1 (func, GNULIB_NAMESPACE)
+# define _GL_CXXALIASWARN_1(func,namespace) \
+   _GL_CXXALIASWARN_2 (func, namespace)
+/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
+   we enable the warning only when not optimizing.  */
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+    _GL_WARN_ON_USE (func, \
+                     "The symbol ::" #func " refers to the system function. " \
+                     "Use " #namespace "::" #func " instead.")
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+     extern __typeof__ (func) func
+# else
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+     _GL_EXTERN_C int _gl_cxxalias_dummy
+# endif
+#else
+# define _GL_CXXALIASWARN(func) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIASWARN1 (func, rettype, parameters_and_attributes);
+   causes a warning to be emitted when the given overloaded variant of ::func
+   is used but not when GNULIB_NAMESPACE::func is used.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
+   _GL_CXXALIASWARN1_1 (func, rettype, parameters_and_attributes, \
+                        GNULIB_NAMESPACE)
+# define _GL_CXXALIASWARN1_1(func,rettype,parameters_and_attributes,namespace) \
+   _GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace)
+/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
+   we enable the warning only when not optimizing.  */
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
+#  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+    _GL_WARN_ON_USE_CXX (func, rettype, rettype, parameters_and_attributes, \
+                         "The symbol ::" #func " refers to the system function. " \
+                         "Use " #namespace "::" #func " instead.")
+# else
+#  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+     _GL_EXTERN_C int _gl_cxxalias_dummy
+# endif
+#else
+# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+#endif /* _GL_CXXDEFS_H */
diff --git a/src/grep/lib/c-ctype.c b/src/grep/lib/c-ctype.c
new file mode 100644
index 0000000..300f97c
--- /dev/null
+++ b/src/grep/lib/c-ctype.c
@@ -0,0 +1,21 @@
+/* Character handling in C locale.
+
+   Copyright (C) 2003-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define C_CTYPE_INLINE _GL_EXTERN_INLINE
+#include "c-ctype.h"
diff --git a/src/grep/lib/c-ctype.h b/src/grep/lib/c-ctype.h
new file mode 100644
index 0000000..3a652ac
--- /dev/null
+++ b/src/grep/lib/c-ctype.h
@@ -0,0 +1,366 @@
+/* Character handling in C locale.
+
+   These functions work like the corresponding functions in <ctype.h>,
+   except that they have the C (POSIX) locale hardwired, whereas the
+   <ctype.h> functions' behaviour depends on the current locale set via
+   setlocale.
+
+   Copyright (C) 2000-2003, 2006, 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef C_CTYPE_H
+#define C_CTYPE_H
+
+#include <stdbool.h>
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef C_CTYPE_INLINE
+# define C_CTYPE_INLINE _GL_INLINE
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* The functions defined in this file assume the "C" locale and a character
+   set without diacritics (ASCII-US or EBCDIC-US or something like that).
+   Even if the "C" locale on a particular system is an extension of the ASCII
+   character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it
+   is ISO-8859-1), the functions in this file recognize only the ASCII
+   characters.  */
+
+
+#if (' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
+    && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
+    && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
+    && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
+    && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
+    && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
+    && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
+    && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
+    && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
+    && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
+    && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
+    && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
+    && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
+    && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
+    && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
+    && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
+    && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
+    && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
+    && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
+    && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
+    && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
+    && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
+    && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126)
+/* The character set is ASCII or one of its variants or extensions, not EBCDIC.
+   Testing the value of '\n' and '\r' is not relevant.  */
+# define C_CTYPE_ASCII 1
+#elif ! (' ' == '\x40' && '0' == '\xf0'                     \
+         && 'A' == '\xc1' && 'J' == '\xd1' && 'S' == '\xe2' \
+         && 'a' == '\x81' && 'j' == '\x91' && 's' == '\xa2')
+# error "Only ASCII and EBCDIC are supported"
+#endif
+
+#if 'A' < 0
+# error "EBCDIC and char is signed -- not supported"
+#endif
+
+/* Cases for control characters.  */
+
+#define _C_CTYPE_CNTRL \
+   case '\a': case '\b': case '\f': case '\n': \
+   case '\r': case '\t': case '\v': \
+   _C_CTYPE_OTHER_CNTRL
+
+/* ASCII control characters other than those with \-letter escapes.  */
+
+#if C_CTYPE_ASCII
+# define _C_CTYPE_OTHER_CNTRL \
+    case '\x00': case '\x01': case '\x02': case '\x03': \
+    case '\x04': case '\x05': case '\x06': case '\x0e': \
+    case '\x0f': case '\x10': case '\x11': case '\x12': \
+    case '\x13': case '\x14': case '\x15': case '\x16': \
+    case '\x17': case '\x18': case '\x19': case '\x1a': \
+    case '\x1b': case '\x1c': case '\x1d': case '\x1e': \
+    case '\x1f': case '\x7f'
+#else
+   /* Use EBCDIC code page 1047's assignments for ASCII control chars;
+      assume all EBCDIC code pages agree about these assignments.  */
+# define _C_CTYPE_OTHER_CNTRL \
+    case '\x00': case '\x01': case '\x02': case '\x03': \
+    case '\x07': case '\x0e': case '\x0f': case '\x10': \
+    case '\x11': case '\x12': case '\x13': case '\x18': \
+    case '\x19': case '\x1c': case '\x1d': case '\x1e': \
+    case '\x1f': case '\x26': case '\x27': case '\x2d': \
+    case '\x2e': case '\x32': case '\x37': case '\x3c': \
+    case '\x3d': case '\x3f'
+#endif
+
+/* Cases for lowercase hex letters, and lowercase letters, all offset by N.  */
+
+#define _C_CTYPE_LOWER_A_THRU_F_N(N) \
+   case 'a' + (N): case 'b' + (N): case 'c' + (N): case 'd' + (N): \
+   case 'e' + (N): case 'f' + (N)
+#define _C_CTYPE_LOWER_N(N) \
+   _C_CTYPE_LOWER_A_THRU_F_N(N): \
+   case 'g' + (N): case 'h' + (N): case 'i' + (N): case 'j' + (N): \
+   case 'k' + (N): case 'l' + (N): case 'm' + (N): case 'n' + (N): \
+   case 'o' + (N): case 'p' + (N): case 'q' + (N): case 'r' + (N): \
+   case 's' + (N): case 't' + (N): case 'u' + (N): case 'v' + (N): \
+   case 'w' + (N): case 'x' + (N): case 'y' + (N): case 'z' + (N)
+
+/* Cases for hex letters, digits, lower, punct, and upper.  */
+
+#define _C_CTYPE_A_THRU_F \
+   _C_CTYPE_LOWER_A_THRU_F_N (0): \
+   _C_CTYPE_LOWER_A_THRU_F_N ('A' - 'a')
+#define _C_CTYPE_DIGIT                     \
+   case '0': case '1': case '2': case '3': \
+   case '4': case '5': case '6': case '7': \
+   case '8': case '9'
+#define _C_CTYPE_LOWER _C_CTYPE_LOWER_N (0)
+#define _C_CTYPE_PUNCT \
+   case '!': case '"': case '#': case '$':  \
+   case '%': case '&': case '\'': case '(': \
+   case ')': case '*': case '+': case ',':  \
+   case '-': case '.': case '/': case ':':  \
+   case ';': case '<': case '=': case '>':  \
+   case '?': case '@': case '[': case '\\': \
+   case ']': case '^': case '_': case '`':  \
+   case '{': case '|': case '}': case '~'
+#define _C_CTYPE_UPPER _C_CTYPE_LOWER_N ('A' - 'a')
+
+
+/* Function definitions.  */
+
+/* Unlike the functions in <ctype.h>, which require an argument in the range
+   of the 'unsigned char' type, the functions here operate on values that are
+   in the 'unsigned char' range or in the 'char' range.  In other words,
+   when you have a 'char' value, you need to cast it before using it as
+   argument to a <ctype.h> function:
+
+         const char *s = ...;
+         if (isalpha ((unsigned char) *s)) ...
+
+   but you don't need to cast it for the functions defined in this file:
+
+         const char *s = ...;
+         if (c_isalpha (*s)) ...
+ */
+
+C_CTYPE_INLINE bool
+c_isalnum (int c)
+{
+  switch (c)
+    {
+    _C_CTYPE_DIGIT:
+    _C_CTYPE_LOWER:
+    _C_CTYPE_UPPER:
+      return true;
+    default:
+      return false;
+    }
+}
+
+C_CTYPE_INLINE bool
+c_isalpha (int c)
+{
+  switch (c)
+    {
+    _C_CTYPE_LOWER:
+    _C_CTYPE_UPPER:
+      return true;
+    default:
+      return false;
+    }
+}
+
+/* The function isascii is not locale dependent.
+   Its use in EBCDIC is questionable. */
+C_CTYPE_INLINE bool
+c_isascii (int c)
+{
+  switch (c)
+    {
+    case ' ':
+    _C_CTYPE_CNTRL:
+    _C_CTYPE_DIGIT:
+    _C_CTYPE_LOWER:
+    _C_CTYPE_PUNCT:
+    _C_CTYPE_UPPER:
+      return true;
+    default:
+      return false;
+    }
+}
+
+C_CTYPE_INLINE bool
+c_isblank (int c)
+{
+  return c == ' ' || c == '\t';
+}
+
+C_CTYPE_INLINE bool
+c_iscntrl (int c)
+{
+  switch (c)
+    {
+    _C_CTYPE_CNTRL:
+      return true;
+    default:
+      return false;
+    }
+}
+
+C_CTYPE_INLINE bool
+c_isdigit (int c)
+{
+  switch (c)
+    {
+    _C_CTYPE_DIGIT:
+      return true;
+    default:
+      return false;
+    }
+}
+
+C_CTYPE_INLINE bool
+c_isgraph (int c)
+{
+  switch (c)
+    {
+    _C_CTYPE_DIGIT:
+    _C_CTYPE_LOWER:
+    _C_CTYPE_PUNCT:
+    _C_CTYPE_UPPER:
+      return true;
+    default:
+      return false;
+    }
+}
+
+C_CTYPE_INLINE bool
+c_islower (int c)
+{
+  switch (c)
+    {
+    _C_CTYPE_LOWER:
+      return true;
+    default:
+      return false;
+    }
+}
+
+C_CTYPE_INLINE bool
+c_isprint (int c)
+{
+  switch (c)
+    {
+    case ' ':
+    _C_CTYPE_DIGIT:
+    _C_CTYPE_LOWER:
+    _C_CTYPE_PUNCT:
+    _C_CTYPE_UPPER:
+      return true;
+    default:
+      return false;
+    }
+}
+
+C_CTYPE_INLINE bool
+c_ispunct (int c)
+{
+  switch (c)
+    {
+    _C_CTYPE_PUNCT:
+      return true;
+    default:
+      return false;
+    }
+}
+
+C_CTYPE_INLINE bool
+c_isspace (int c)
+{
+  switch (c)
+    {
+    case ' ': case '\t': case '\n': case '\v': case '\f': case '\r':
+      return true;
+    default:
+      return false;
+    }
+}
+
+C_CTYPE_INLINE bool
+c_isupper (int c)
+{
+  switch (c)
+    {
+    _C_CTYPE_UPPER:
+      return true;
+    default:
+      return false;
+    }
+}
+
+C_CTYPE_INLINE bool
+c_isxdigit (int c)
+{
+  switch (c)
+    {
+    _C_CTYPE_DIGIT:
+    _C_CTYPE_A_THRU_F:
+      return true;
+    default:
+      return false;
+    }
+}
+
+C_CTYPE_INLINE int
+c_tolower (int c)
+{
+  switch (c)
+    {
+    _C_CTYPE_UPPER:
+      return c - 'A' + 'a';
+    default:
+      return c;
+    }
+}
+
+C_CTYPE_INLINE int
+c_toupper (int c)
+{
+  switch (c)
+    {
+    _C_CTYPE_LOWER:
+      return c - 'a' + 'A';
+    default:
+      return c;
+    }
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+_GL_INLINE_HEADER_END
+
+#endif /* C_CTYPE_H */
diff --git a/src/grep/lib/c-stack.c b/src/grep/lib/c-stack.c
new file mode 100644
index 0000000..1965bdd
--- /dev/null
+++ b/src/grep/lib/c-stack.c
@@ -0,0 +1,214 @@
+/* Stack overflow handling.
+
+   Copyright (C) 2002, 2004, 2006, 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+/* NOTES:
+
+   A program that uses alloca, dynamic arrays, or large local
+   variables may extend the stack by more than a page at a time.  If
+   so, when the stack overflows the operating system may not detect
+   the overflow until the program uses the array, and this module may
+   incorrectly report a program error instead of a stack overflow.
+
+   To avoid this problem, allocate only small objects on the stack; a
+   program should be OK if it limits single allocations to a page or
+   less.  Allocate larger arrays in static storage, or on the heap
+   (e.g., with malloc).  Yes, this is a pain, but we don't know of any
+   better solution that is portable.
+
+   No attempt has been made to deal with multithreaded applications.  */
+
+#include <config.h>
+
+#include "c-stack.h"
+
+#include <errno.h>
+#include <inttypes.h>
+#include <signal.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#if DEBUG
+# include <stdio.h>
+#endif
+
+#include <sigsegv.h>
+
+#include "exitfail.h"
+#include "getprogname.h"
+#include "idx.h"
+#include "ignore-value.h"
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+#if HAVE_STACK_OVERFLOW_RECOVERY
+
+/* Storage for the alternate signal stack.
+   64 KiB is not too large for Gnulib-using apps, and is large enough
+   for all known platforms.  Smaller sizes may run into trouble.
+   For example, libsigsegv 2.6 through 2.8 have a bug where some
+   architectures use more than the Linux default of an 8 KiB alternate
+   stack when deciding if a fault was caused by stack overflow.  */
+static max_align_t alternate_signal_stack[(64 * 1024
+                                           + sizeof (max_align_t) - 1)
+                                          / sizeof (max_align_t)];
+
+/* The user-specified action to take when a SEGV-related program error
+   or stack overflow occurs.  */
+static _GL_ASYNC_SAFE void (* volatile segv_action) (int);
+
+/* Translated messages for program errors and stack overflow.  Do not
+   translate them in the signal handler, since gettext is not
+   async-signal-safe.  */
+static char const * volatile program_error_message;
+static char const * volatile stack_overflow_message;
+
+/* Output an error message, then exit with status EXIT_FAILURE if it
+   appears to have been a stack overflow, or with a core dump
+   otherwise.  This function is async-signal-safe.  */
+
+static char const * volatile progname;
+
+static _GL_ASYNC_SAFE _Noreturn void
+die (int signo)
+{
+  segv_action (signo);
+  char const *message = signo ? program_error_message : stack_overflow_message;
+
+  /* If the message is short, write it all at once to avoid
+     interleaving with other messages.  Avoid writev as it is not
+     documented to be async-signal-safe.  */
+  size_t prognamelen = strlen (progname);
+  size_t messagelen = strlen (message);
+  static char const separator[] = {':', ' '};
+  char buf[sizeof alternate_signal_stack / 16 + sizeof separator];
+  idx_t buflen;
+  if (prognamelen + messagelen < sizeof buf - sizeof separator)
+    {
+      char *p = mempcpy (buf, progname, prognamelen);
+      p = mempcpy (p, separator, sizeof separator);
+      p = mempcpy (p, message, messagelen);
+      *p++ = '\n';
+      buflen = p - buf;
+    }
+  else
+    {
+      ignore_value (write (STDERR_FILENO, progname, prognamelen));
+      ignore_value (write (STDERR_FILENO, separator, sizeof separator));
+      ignore_value (write (STDERR_FILENO, message, messagelen));
+      buf[0] = '\n';
+      buflen = 1;
+    }
+  ignore_value (write (STDERR_FILENO, buf, buflen));
+
+  if (! signo)
+    _exit (exit_failure);
+  raise (signo);
+  abort ();
+}
+
+static _GL_ASYNC_SAFE void
+null_action (int signo _GL_UNUSED)
+{
+}
+
+/* Pacify GCC 9.3.1, which otherwise would complain about segv_handler.  */
+# if 4 < __GNUC__ + (6 <= __GNUC_MINOR__)
+#  pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
+# endif
+
+/* Nonzero if general segv handler could not be installed.  */
+static volatile int segv_handler_missing;
+
+/* Handle a segmentation violation and exit if it cannot be stack
+   overflow.  This function is async-signal-safe.  */
+
+static _GL_ASYNC_SAFE int
+segv_handler (void *address _GL_UNUSED, int serious)
+{
+# if DEBUG
+  {
+    char buf[1024];
+    int saved_errno = errno;
+    ignore_value (write (STDERR_FILENO, buf,
+                         sprintf (buf, "segv_handler serious=%d\n", serious)));
+    errno = saved_errno;
+  }
+# endif
+
+  /* If this fault is not serious, return 0 to let the stack overflow
+     handler take a shot at it.  */
+  if (!serious)
+    return 0;
+  die (SIGSEGV);
+}
+
+/* Handle a segmentation violation that is likely to be a stack
+   overflow and exit.  This function is async-signal-safe.  */
+
+static _GL_ASYNC_SAFE _Noreturn void
+overflow_handler (int emergency, stackoverflow_context_t context _GL_UNUSED)
+{
+# if DEBUG
+  {
+    char buf[1024];
+    ignore_value (write (STDERR_FILENO, buf,
+                         sprintf (buf, ("overflow_handler emergency=%d"
+                                        " segv_handler_missing=%d\n"),
+                                  emergency, segv_handler_missing)));
+  }
+# endif
+
+  die ((!emergency || segv_handler_missing) ? 0 : SIGSEGV);
+}
+
+int
+c_stack_action (_GL_ASYNC_SAFE void (*action) (int))
+{
+  segv_action = action ? action : null_action;
+  program_error_message = _("program error");
+  stack_overflow_message = _("stack overflow");
+  progname = getprogname ();
+
+  /* Always install the overflow handler.  */
+  if (stackoverflow_install_handler (overflow_handler,
+                                     alternate_signal_stack,
+                                     sizeof alternate_signal_stack))
+    {
+      errno = ENOTSUP;
+      return -1;
+    }
+  /* Try installing a general handler; if it fails, then treat all
+     segv as stack overflow.  */
+  segv_handler_missing = sigsegv_install_handler (segv_handler);
+  return 0;
+}
+
+#else /* !HAVE_STACK_OVERFLOW_RECOVERY */
+
+int
+c_stack_action (_GL_ASYNC_SAFE void (*action) (int)  _GL_UNUSED)
+{
+  errno = ENOTSUP;
+  return -1;
+}
+
+#endif
diff --git a/src/grep/lib/c-stack.h b/src/grep/lib/c-stack.h
new file mode 100644
index 0000000..a9a8b13
--- /dev/null
+++ b/src/grep/lib/c-stack.h
@@ -0,0 +1,49 @@
+/* Stack overflow handling.
+
+   Copyright (C) 2002, 2004, 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+
+/* Set up ACTION so that it is invoked on C stack overflow and on other,
+   stack-unrelated, segmentation violation.
+   Return -1 (setting errno) if this cannot be done.
+
+   When a stack overflow or segmentation violation occurs:
+   1) ACTION is called.  It is passed an argument equal to
+        - 0, for a stack overflow,
+        - SIGSEGV, for a segmentation violation that does not appear related
+          to stack overflow.
+      On many platforms the two cases are hard to distinguish; when in doubt,
+      zero is passed.
+   2) If ACTION returns, a message is written to standard error, and the
+      program is terminated: in the case of stack overflow, with exit code
+      exit_failure (see "exitfail.h"), otherwise through a signal SIGSEGV.
+
+   A null ACTION acts like an action that does nothing.
+
+   Restrictions:
+   - ACTION must be async-signal-safe.
+   - ACTION together with its callees must not require more than 64 KiB of
+     stack space.
+   - ACTION must not create and then invoke nested functions
+     <https://gcc.gnu.org/onlinedocs/gcc/Nested-Functions.html>, because
+     this implementation does not guarantee an executable stack.
+   - ACTION should not call longjmp, because this implementation does not
+     guarantee that it is safe to return to the original stack.
+
+   This function may install a handler for the SIGSEGV signal or for the SIGBUS
+   signal or exercise other system dependent exception handling APIs.  */
+
+extern int c_stack_action (_GL_ASYNC_SAFE void (* /*action*/) (int));
diff --git a/src/grep/lib/c-strcase.h b/src/grep/lib/c-strcase.h
new file mode 100644
index 0000000..82f99bb
--- /dev/null
+++ b/src/grep/lib/c-strcase.h
@@ -0,0 +1,56 @@
+/* Case-insensitive string comparison functions in C locale.
+   Copyright (C) 1995-1996, 2001, 2003, 2005, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef C_STRCASE_H
+#define C_STRCASE_H
+
+#include <stddef.h>
+
+
+/* The functions defined in this file assume the "C" locale and a character
+   set without diacritics (ASCII-US or EBCDIC-US or something like that).
+   Even if the "C" locale on a particular system is an extension of the ASCII
+   character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it
+   is ISO-8859-1), the functions in this file recognize only the ASCII
+   characters.  More precisely, one of the string arguments must be an ASCII
+   string; the other one can also contain non-ASCII characters (but then
+   the comparison result will be nonzero).  */
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Compare strings S1 and S2, ignoring case, returning less than, equal to or
+   greater than zero if S1 is lexicographically less than, equal to or greater
+   than S2.  */
+extern int c_strcasecmp (const char *s1, const char *s2) _GL_ATTRIBUTE_PURE;
+
+/* Compare no more than N characters of strings S1 and S2, ignoring case,
+   returning less than, equal to or greater than zero if S1 is
+   lexicographically less than, equal to or greater than S2.  */
+extern int c_strncasecmp (const char *s1, const char *s2, size_t n)
+  _GL_ATTRIBUTE_PURE;
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* C_STRCASE_H */
diff --git a/src/grep/lib/c-strcasecmp.c b/src/grep/lib/c-strcasecmp.c
new file mode 100644
index 0000000..3c22455
--- /dev/null
+++ b/src/grep/lib/c-strcasecmp.c
@@ -0,0 +1,56 @@
+/* c-strcasecmp.c -- case insensitive string comparator in C locale
+   Copyright (C) 1998-1999, 2005-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "c-strcase.h"
+
+#include <limits.h>
+
+#include "c-ctype.h"
+
+int
+c_strcasecmp (const char *s1, const char *s2)
+{
+  register const unsigned char *p1 = (const unsigned char *) s1;
+  register const unsigned char *p2 = (const unsigned char *) s2;
+  unsigned char c1, c2;
+
+  if (p1 == p2)
+    return 0;
+
+  do
+    {
+      c1 = c_tolower (*p1);
+      c2 = c_tolower (*p2);
+
+      if (c1 == '\0')
+        break;
+
+      ++p1;
+      ++p2;
+    }
+  while (c1 == c2);
+
+  if (UCHAR_MAX <= INT_MAX)
+    return c1 - c2;
+  else
+    /* On machines where 'char' and 'int' are types of the same size, the
+       difference of two 'unsigned char' values - including the sign bit -
+       doesn't fit in an 'int'.  */
+    return _GL_CMP (c1, c2);
+}
diff --git a/src/grep/lib/c-strcaseeq.h b/src/grep/lib/c-strcaseeq.h
new file mode 100644
index 0000000..66b9cf3
--- /dev/null
+++ b/src/grep/lib/c-strcaseeq.h
@@ -0,0 +1,181 @@
+/* Optimized case-insensitive string comparison in C locale.
+   Copyright (C) 2001-2002, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>.  */
+
+#include "c-strcase.h"
+#include "c-ctype.h"
+
+/* STRCASEEQ allows to optimize string comparison with a small literal string.
+     STRCASEEQ (s, "UTF-8", 'U','T','F','-','8',0,0,0,0)
+   is semantically equivalent to
+     c_strcasecmp (s, "UTF-8") == 0
+   just faster.  */
+
+/* Help GCC to generate good code for string comparisons with
+   immediate strings. */
+#if (defined __GNUC__ || defined __clang__) && defined __OPTIMIZE__
+
+/* Case insensitive comparison of ASCII characters.  */
+# if C_CTYPE_ASCII
+#  define CASEEQ(other,upper) \
+     (c_isupper (upper) ? ((other) & ~0x20) == (upper) : (other) == (upper))
+# else
+#  define CASEEQ(other,upper) \
+     (c_toupper (other) == (upper))
+# endif
+
+static inline int
+strcaseeq9 (const char *s1, const char *s2)
+{
+  return c_strcasecmp (s1 + 9, s2 + 9) == 0;
+}
+
+static inline int
+strcaseeq8 (const char *s1, const char *s2, char s28)
+{
+  if (CASEEQ (s1[8], s28))
+    {
+      if (s28 == 0)
+        return 1;
+      else
+        return strcaseeq9 (s1, s2);
+    }
+  else
+    return 0;
+}
+
+static inline int
+strcaseeq7 (const char *s1, const char *s2, char s27, char s28)
+{
+  if (CASEEQ (s1[7], s27))
+    {
+      if (s27 == 0)
+        return 1;
+      else
+        return strcaseeq8 (s1, s2, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+strcaseeq6 (const char *s1, const char *s2, char s26, char s27, char s28)
+{
+  if (CASEEQ (s1[6], s26))
+    {
+      if (s26 == 0)
+        return 1;
+      else
+        return strcaseeq7 (s1, s2, s27, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+strcaseeq5 (const char *s1, const char *s2, char s25, char s26, char s27, char s28)
+{
+  if (CASEEQ (s1[5], s25))
+    {
+      if (s25 == 0)
+        return 1;
+      else
+        return strcaseeq6 (s1, s2, s26, s27, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+strcaseeq4 (const char *s1, const char *s2, char s24, char s25, char s26, char s27, char s28)
+{
+  if (CASEEQ (s1[4], s24))
+    {
+      if (s24 == 0)
+        return 1;
+      else
+        return strcaseeq5 (s1, s2, s25, s26, s27, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+strcaseeq3 (const char *s1, const char *s2, char s23, char s24, char s25, char s26, char s27, char s28)
+{
+  if (CASEEQ (s1[3], s23))
+    {
+      if (s23 == 0)
+        return 1;
+      else
+        return strcaseeq4 (s1, s2, s24, s25, s26, s27, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+strcaseeq2 (const char *s1, const char *s2, char s22, char s23, char s24, char s25, char s26, char s27, char s28)
+{
+  if (CASEEQ (s1[2], s22))
+    {
+      if (s22 == 0)
+        return 1;
+      else
+        return strcaseeq3 (s1, s2, s23, s24, s25, s26, s27, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+strcaseeq1 (const char *s1, const char *s2, char s21, char s22, char s23, char s24, char s25, char s26, char s27, char s28)
+{
+  if (CASEEQ (s1[1], s21))
+    {
+      if (s21 == 0)
+        return 1;
+      else
+        return strcaseeq2 (s1, s2, s22, s23, s24, s25, s26, s27, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+strcaseeq0 (const char *s1, const char *s2, char s20, char s21, char s22, char s23, char s24, char s25, char s26, char s27, char s28)
+{
+  if (CASEEQ (s1[0], s20))
+    {
+      if (s20 == 0)
+        return 1;
+      else
+        return strcaseeq1 (s1, s2, s21, s22, s23, s24, s25, s26, s27, s28);
+    }
+  else
+    return 0;
+}
+
+#define STRCASEEQ(s1,s2,s20,s21,s22,s23,s24,s25,s26,s27,s28) \
+  strcaseeq0 (s1, s2, s20, s21, s22, s23, s24, s25, s26, s27, s28)
+
+#else
+
+#define STRCASEEQ(s1,s2,s20,s21,s22,s23,s24,s25,s26,s27,s28) \
+  (c_strcasecmp (s1, s2) == 0)
+
+#endif
diff --git a/src/grep/lib/c-strncasecmp.c b/src/grep/lib/c-strncasecmp.c
new file mode 100644
index 0000000..f3ca786
--- /dev/null
+++ b/src/grep/lib/c-strncasecmp.c
@@ -0,0 +1,56 @@
+/* c-strncasecmp.c -- case insensitive string comparator in C locale
+   Copyright (C) 1998-1999, 2005-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "c-strcase.h"
+
+#include <limits.h>
+
+#include "c-ctype.h"
+
+int
+c_strncasecmp (const char *s1, const char *s2, size_t n)
+{
+  register const unsigned char *p1 = (const unsigned char *) s1;
+  register const unsigned char *p2 = (const unsigned char *) s2;
+  unsigned char c1, c2;
+
+  if (p1 == p2 || n == 0)
+    return 0;
+
+  do
+    {
+      c1 = c_tolower (*p1);
+      c2 = c_tolower (*p2);
+
+      if (--n == 0 || c1 == '\0')
+        break;
+
+      ++p1;
+      ++p2;
+    }
+  while (c1 == c2);
+
+  if (UCHAR_MAX <= INT_MAX)
+    return c1 - c2;
+  else
+    /* On machines where 'char' and 'int' are types of the same size, the
+       difference of two 'unsigned char' values - including the sign bit -
+       doesn't fit in an 'int'.  */
+    return _GL_CMP (c1, c2);
+}
diff --git a/src/grep/lib/calloc.c b/src/grep/lib/calloc.c
new file mode 100644
index 0000000..25064e9
--- /dev/null
+++ b/src/grep/lib/calloc.c
@@ -0,0 +1,55 @@
+/* calloc() function that is glibc compatible.
+   This wrapper function is required at least on Tru64 UNIX 5.1 and mingw.
+   Copyright (C) 2004-2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering and Bruno Haible */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <errno.h>
+
+#include "xalloc-oversized.h"
+
+/* Call the system's calloc below.  */
+#undef calloc
+
+/* Allocate and zero-fill an NxS-byte block of memory from the heap,
+   even if N or S is zero.  */
+
+void *
+rpl_calloc (size_t n, size_t s)
+{
+  if (n == 0 || s == 0)
+    n = s = 1;
+
+  if (xalloc_oversized (n, s))
+    {
+      errno = ENOMEM;
+      return NULL;
+    }
+
+  void *result = calloc (n, s);
+
+#if !HAVE_MALLOC_POSIX
+  if (result == NULL)
+    errno = ENOMEM;
+#endif
+
+  return result;
+}
diff --git a/src/grep/lib/cdefs.h b/src/grep/lib/cdefs.h
new file mode 100644
index 0000000..b883b25
--- /dev/null
+++ b/src/grep/lib/cdefs.h
@@ -0,0 +1,614 @@
+/* Copyright (C) 1992-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef	_SYS_CDEFS_H
+#define	_SYS_CDEFS_H	1
+
+/* We are almost always included from features.h. */
+#ifndef _FEATURES_H
+# include <features.h>
+#endif
+
+/* The GNU libc does not support any K&R compilers or the traditional mode
+   of ISO C compilers anymore.  Check for some of the combinations not
+   supported anymore.  */
+#if defined __GNUC__ && !defined __STDC__
+# error "You need a ISO C conforming compiler to use the glibc headers"
+#endif
+
+/* Some user header file might have defined this before.  */
+#undef	__P
+#undef	__PMT
+
+/* Compilers that lack __has_attribute may object to
+       #if defined __has_attribute && __has_attribute (...)
+   even though they do not need to evaluate the right-hand side of the &&.
+   Similarly for __has_builtin, etc.  */
+#if (defined __has_attribute \
+     && (!defined __clang_minor__ \
+         || 3 < __clang_major__ + (5 <= __clang_minor__)))
+# define __glibc_has_attribute(attr) __has_attribute (attr)
+#else
+# define __glibc_has_attribute(attr) 0
+#endif
+#ifdef __has_builtin
+# define __glibc_has_builtin(name) __has_builtin (name)
+#else
+# define __glibc_has_builtin(name) 0
+#endif
+#ifdef __has_extension
+# define __glibc_has_extension(ext) __has_extension (ext)
+#else
+# define __glibc_has_extension(ext) 0
+#endif
+
+#if defined __GNUC__ || defined __clang__
+
+/* All functions, except those with callbacks or those that
+   synchronize memory, are leaf functions.  */
+# if __GNUC_PREREQ (4, 6) && !defined _LIBC
+#  define __LEAF , __leaf__
+#  define __LEAF_ATTR __attribute__ ((__leaf__))
+# else
+#  define __LEAF
+#  define __LEAF_ATTR
+# endif
+
+/* GCC can always grok prototypes.  For C++ programs we add throw()
+   to help it optimize the function calls.  But this only works with
+   gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+   as non-throwing using a function attribute since programs can use
+   the -fexceptions options for C code as well.  */
+# if !defined __cplusplus \
+     && (__GNUC_PREREQ (3, 4) || __glibc_has_attribute (__nothrow__))
+#  define __THROW	__attribute__ ((__nothrow__ __LEAF))
+#  define __THROWNL	__attribute__ ((__nothrow__))
+#  define __NTH(fct)	__attribute__ ((__nothrow__ __LEAF)) fct
+#  define __NTHNL(fct)  __attribute__ ((__nothrow__)) fct
+# else
+#  if defined __cplusplus && (__GNUC_PREREQ (2,8) || __clang_major >= 4)
+#   if __cplusplus >= 201103L
+#    define __THROW	noexcept (true)
+#   else
+#    define __THROW	throw ()
+#   endif
+#   define __THROWNL	__THROW
+#   define __NTH(fct)	__LEAF_ATTR fct __THROW
+#   define __NTHNL(fct) fct __THROW
+#  else
+#   define __THROW
+#   define __THROWNL
+#   define __NTH(fct)	fct
+#   define __NTHNL(fct) fct
+#  endif
+# endif
+
+#else	/* Not GCC or clang.  */
+
+# if (defined __cplusplus						\
+      || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
+#  define __inline	inline
+# else
+#  define __inline		/* No inline functions.  */
+# endif
+
+# define __THROW
+# define __THROWNL
+# define __NTH(fct)	fct
+
+#endif	/* GCC || clang.  */
+
+/* These two macros are not used in glibc anymore.  They are kept here
+   only because some other projects expect the macros to be defined.  */
+#define __P(args)	args
+#define __PMT(args)	args
+
+/* For these things, GCC behaves the ANSI way normally,
+   and the non-ANSI way under -traditional.  */
+
+#define __CONCAT(x,y)	x ## y
+#define __STRING(x)	#x
+
+/* This is not a typedef so `const __ptr_t' does the right thing.  */
+#define __ptr_t void *
+
+
+/* C++ needs to know that types and declarations are C, not C++.  */
+#ifdef	__cplusplus
+# define __BEGIN_DECLS	extern "C" {
+# define __END_DECLS	}
+#else
+# define __BEGIN_DECLS
+# define __END_DECLS
+#endif
+
+
+/* Fortify support.  */
+#define __bos(ptr) __builtin_object_size (ptr, __USE_FORTIFY_LEVEL > 1)
+#define __bos0(ptr) __builtin_object_size (ptr, 0)
+
+/* Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.  */
+#if __USE_FORTIFY_LEVEL == 3 && __glibc_clang_prereq (9, 0)
+# define __glibc_objsize0(__o) __builtin_dynamic_object_size (__o, 0)
+# define __glibc_objsize(__o) __builtin_dynamic_object_size (__o, 1)
+#else
+# define __glibc_objsize0(__o) __bos0 (__o)
+# define __glibc_objsize(__o) __bos (__o)
+#endif
+
+#if __GNUC_PREREQ (4,3)
+# define __warnattr(msg) __attribute__((__warning__ (msg)))
+# define __errordecl(name, msg) \
+  extern void name (void) __attribute__((__error__ (msg)))
+#else
+# define __warnattr(msg)
+# define __errordecl(name, msg) extern void name (void)
+#endif
+
+/* Support for flexible arrays.
+   Headers that should use flexible arrays only if they're "real"
+   (e.g. only if they won't affect sizeof()) should test
+   #if __glibc_c99_flexarr_available.  */
+#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L && !defined __HP_cc
+# define __flexarr	[]
+# define __glibc_c99_flexarr_available 1
+#elif __GNUC_PREREQ (2,97) || defined __clang__
+/* GCC 2.97 and clang support C99 flexible array members as an extension,
+   even when in C89 mode or compiling C++ (any version).  */
+# define __flexarr	[]
+# define __glibc_c99_flexarr_available 1
+#elif defined __GNUC__
+/* Pre-2.97 GCC did not support C99 flexible arrays but did have
+   an equivalent extension with slightly different notation.  */
+# define __flexarr	[0]
+# define __glibc_c99_flexarr_available 1
+#else
+/* Some other non-C99 compiler.  Approximate with [1].  */
+# define __flexarr	[1]
+# define __glibc_c99_flexarr_available 0
+#endif
+
+
+/* __asm__ ("xyz") is used throughout the headers to rename functions
+   at the assembly language level.  This is wrapped by the __REDIRECT
+   macro, in order to support compilers that can do this some other
+   way.  When compilers don't support asm-names at all, we have to do
+   preprocessor tricks instead (which don't have exactly the right
+   semantics, but it's the best we can do).
+
+   Example:
+   int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid); */
+
+#if (defined __GNUC__ && __GNUC__ >= 2) || (__clang_major__ >= 4)
+
+# define __REDIRECT(name, proto, alias) name proto __asm__ (__ASMNAME (#alias))
+# ifdef __cplusplus
+#  define __REDIRECT_NTH(name, proto, alias) \
+     name proto __THROW __asm__ (__ASMNAME (#alias))
+#  define __REDIRECT_NTHNL(name, proto, alias) \
+     name proto __THROWNL __asm__ (__ASMNAME (#alias))
+# else
+#  define __REDIRECT_NTH(name, proto, alias) \
+     name proto __asm__ (__ASMNAME (#alias)) __THROW
+#  define __REDIRECT_NTHNL(name, proto, alias) \
+     name proto __asm__ (__ASMNAME (#alias)) __THROWNL
+# endif
+# define __ASMNAME(cname)  __ASMNAME2 (__USER_LABEL_PREFIX__, cname)
+# define __ASMNAME2(prefix, cname) __STRING (prefix) cname
+
+/*
+#elif __SOME_OTHER_COMPILER__
+
+# define __REDIRECT(name, proto, alias) name proto; \
+	_Pragma("let " #name " = " #alias)
+*/
+#endif
+
+/* GCC and clang have various useful declarations that can be made with
+   the '__attribute__' syntax.  All of the ways we use this do fine if
+   they are omitted for compilers that don't understand it.  */
+#if !(defined __GNUC__ || defined __clang__)
+# define __attribute__(xyz)	/* Ignore */
+#endif
+
+/* At some point during the gcc 2.96 development the `malloc' attribute
+   for functions was introduced.  We don't want to use it unconditionally
+   (although this would be possible) since it generates warnings.  */
+#if __GNUC_PREREQ (2,96) || __glibc_has_attribute (__malloc__)
+# define __attribute_malloc__ __attribute__ ((__malloc__))
+#else
+# define __attribute_malloc__ /* Ignore */
+#endif
+
+/* Tell the compiler which arguments to an allocation function
+   indicate the size of the allocation.  */
+#if __GNUC_PREREQ (4, 3)
+# define __attribute_alloc_size__(params) \
+  __attribute__ ((__alloc_size__ params))
+#else
+# define __attribute_alloc_size__(params) /* Ignore.  */
+#endif
+
+/* At some point during the gcc 2.96 development the `pure' attribute
+   for functions was introduced.  We don't want to use it unconditionally
+   (although this would be possible) since it generates warnings.  */
+#if __GNUC_PREREQ (2,96) || __glibc_has_attribute (__pure__)
+# define __attribute_pure__ __attribute__ ((__pure__))
+#else
+# define __attribute_pure__ /* Ignore */
+#endif
+
+/* This declaration tells the compiler that the value is constant.  */
+#if __GNUC_PREREQ (2,5) || __glibc_has_attribute (__const__)
+# define __attribute_const__ __attribute__ ((__const__))
+#else
+# define __attribute_const__ /* Ignore */
+#endif
+
+#if __GNUC_PREREQ (2,7) || __glibc_has_attribute (__unused__)
+# define __attribute_maybe_unused__ __attribute__ ((__unused__))
+/* Once the next version of the C standard comes out, we can
+   do something like the following here:
+   #elif defined __STDC_VERSION__ && 202???L <= __STDC_VERSION__
+   # define __attribute_maybe_unused__ [[__maybe_unused__]]   */
+#else
+# define __attribute_maybe_unused__ /* Ignore */
+#endif
+
+/* At some point during the gcc 3.1 development the `used' attribute
+   for functions was introduced.  We don't want to use it unconditionally
+   (although this would be possible) since it generates warnings.  */
+#if __GNUC_PREREQ (3,1) || __glibc_has_attribute (__used__)
+# define __attribute_used__ __attribute__ ((__used__))
+# define __attribute_noinline__ __attribute__ ((__noinline__))
+#else
+# define __attribute_used__ __attribute__ ((__unused__))
+# define __attribute_noinline__ /* Ignore */
+#endif
+
+/* Since version 3.2, gcc allows marking deprecated functions.  */
+#if __GNUC_PREREQ (3,2) || __glibc_has_attribute (__deprecated__)
+# define __attribute_deprecated__ __attribute__ ((__deprecated__))
+#else
+# define __attribute_deprecated__ /* Ignore */
+#endif
+
+/* Since version 4.5, gcc also allows one to specify the message printed
+   when a deprecated function is used.  clang claims to be gcc 4.2, but
+   may also support this feature.  */
+#if __GNUC_PREREQ (4,5) \
+    || __glibc_has_extension (__attribute_deprecated_with_message__)
+# define __attribute_deprecated_msg__(msg) \
+	 __attribute__ ((__deprecated__ (msg)))
+#else
+# define __attribute_deprecated_msg__(msg) __attribute_deprecated__
+#endif
+
+/* At some point during the gcc 2.8 development the `format_arg' attribute
+   for functions was introduced.  We don't want to use it unconditionally
+   (although this would be possible) since it generates warnings.
+   If several `format_arg' attributes are given for the same function, in
+   gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+   all designated arguments are considered.  */
+#if __GNUC_PREREQ (2,8) || __glibc_has_attribute (__format_arg__)
+# define __attribute_format_arg__(x) __attribute__ ((__format_arg__ (x)))
+#else
+# define __attribute_format_arg__(x) /* Ignore */
+#endif
+
+/* At some point during the gcc 2.97 development the `strfmon' format
+   attribute for functions was introduced.  We don't want to use it
+   unconditionally (although this would be possible) since it
+   generates warnings.  */
+#if __GNUC_PREREQ (2,97) || __glibc_has_attribute (__format__)
+# define __attribute_format_strfmon__(a,b) \
+  __attribute__ ((__format__ (__strfmon__, a, b)))
+#else
+# define __attribute_format_strfmon__(a,b) /* Ignore */
+#endif
+
+/* The nonnull function attribute marks pointer parameters that
+   must not be NULL.  This has the name __nonnull in glibc,
+   and __attribute_nonnull__ in files shared with Gnulib to avoid
+   collision with a different __nonnull in DragonFlyBSD 5.9.  */
+#ifndef __attribute_nonnull__
+# if __GNUC_PREREQ (3,3) || __glibc_has_attribute (__nonnull__)
+#  define __attribute_nonnull__(params) __attribute__ ((__nonnull__ params))
+# else
+#  define __attribute_nonnull__(params)
+# endif
+#endif
+#ifndef __nonnull
+# define __nonnull(params) __attribute_nonnull__ (params)
+#endif
+
+/* If fortification mode, we warn about unused results of certain
+   function calls which can lead to problems.  */
+#if __GNUC_PREREQ (3,4) || __glibc_has_attribute (__warn_unused_result__)
+# define __attribute_warn_unused_result__ \
+   __attribute__ ((__warn_unused_result__))
+# if defined __USE_FORTIFY_LEVEL && __USE_FORTIFY_LEVEL > 0
+#  define __wur __attribute_warn_unused_result__
+# endif
+#else
+# define __attribute_warn_unused_result__ /* empty */
+#endif
+#ifndef __wur
+# define __wur /* Ignore */
+#endif
+
+/* Forces a function to be always inlined.  */
+#if __GNUC_PREREQ (3,2) || __glibc_has_attribute (__always_inline__)
+/* The Linux kernel defines __always_inline in stddef.h (283d7573), and
+   it conflicts with this definition.  Therefore undefine it first to
+   allow either header to be included first.  */
+# undef __always_inline
+# define __always_inline __inline __attribute__ ((__always_inline__))
+#else
+# undef __always_inline
+# define __always_inline __inline
+#endif
+
+/* Associate error messages with the source location of the call site rather
+   than with the source location inside the function.  */
+#if __GNUC_PREREQ (4,3) || __glibc_has_attribute (__artificial__)
+# define __attribute_artificial__ __attribute__ ((__artificial__))
+#else
+# define __attribute_artificial__ /* Ignore */
+#endif
+
+/* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+   inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+   or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+   older than 4.3 may define these macros and still not guarantee GNU inlining
+   semantics.
+
+   clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+   semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+   __GNUC_GNU_INLINE__ macro definitions.  */
+#if (!defined __cplusplus || __GNUC_PREREQ (4,3) \
+     || (defined __clang__ && (defined __GNUC_STDC_INLINE__ \
+			       || defined __GNUC_GNU_INLINE__)))
+# if defined __GNUC_STDC_INLINE__ || defined __cplusplus
+#  define __extern_inline extern __inline __attribute__ ((__gnu_inline__))
+#  define __extern_always_inline \
+  extern __always_inline __attribute__ ((__gnu_inline__))
+# else
+#  define __extern_inline extern __inline
+#  define __extern_always_inline extern __always_inline
+# endif
+#endif
+
+#ifdef __extern_always_inline
+# define __fortify_function __extern_always_inline __attribute_artificial__
+#endif
+
+/* GCC 4.3 and above allow passing all anonymous arguments of an
+   __extern_always_inline function to some other vararg function.  */
+#if __GNUC_PREREQ (4,3)
+# define __va_arg_pack() __builtin_va_arg_pack ()
+# define __va_arg_pack_len() __builtin_va_arg_pack_len ()
+#endif
+
+/* It is possible to compile containing GCC extensions even if GCC is
+   run in pedantic mode if the uses are carefully marked using the
+   `__extension__' keyword.  But this is not generally available before
+   version 2.8.  */
+#if !(__GNUC_PREREQ (2,8) || defined __clang__)
+# define __extension__		/* Ignore */
+#endif
+
+/* __restrict is known in EGCS 1.2 and above, and in clang.
+   It works also in C++ mode (outside of arrays), but only when spelled
+   as '__restrict', not 'restrict'.  */
+#if !(__GNUC_PREREQ (2,92) || __clang_major__ >= 3)
+# if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+#  define __restrict	restrict
+# else
+#  define __restrict	/* Ignore */
+# endif
+#endif
+
+/* ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+     array_name[restrict]
+   GCC 3.1 and clang support this.
+   This syntax is not usable in C++ mode.  */
+#if (__GNUC_PREREQ (3,1) || __clang_major__ >= 3) && !defined __cplusplus
+# define __restrict_arr	__restrict
+#else
+# ifdef __GNUC__
+#  define __restrict_arr	/* Not supported in old GCC.  */
+# else
+#  if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+#   define __restrict_arr	restrict
+#  else
+/* Some other non-C99 compiler.  */
+#   define __restrict_arr	/* Not supported.  */
+#  endif
+# endif
+#endif
+
+#if (__GNUC__ >= 3) || __glibc_has_builtin (__builtin_expect)
+# define __glibc_unlikely(cond)	__builtin_expect ((cond), 0)
+# define __glibc_likely(cond)	__builtin_expect ((cond), 1)
+#else
+# define __glibc_unlikely(cond)	(cond)
+# define __glibc_likely(cond)	(cond)
+#endif
+
+#if (!defined _Noreturn \
+     && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
+     &&  !(__GNUC_PREREQ (4,7) \
+           || (3 < __clang_major__ + (5 <= __clang_minor__))))
+# if __GNUC_PREREQ (2,8)
+#  define _Noreturn __attribute__ ((__noreturn__))
+# else
+#  define _Noreturn
+# endif
+#endif
+
+#if __GNUC_PREREQ (8, 0)
+/* Describes a char array whose address can safely be passed as the first
+   argument to strncpy and strncat, as the char array is not necessarily
+   a NUL-terminated string.  */
+# define __attribute_nonstring__ __attribute__ ((__nonstring__))
+#else
+# define __attribute_nonstring__
+#endif
+
+/* Undefine (also defined in libc-symbols.h).  */
+#undef __attribute_copy__
+#if __GNUC_PREREQ (9, 0)
+/* Copies attributes from the declaration or type referenced by
+   the argument.  */
+# define __attribute_copy__(arg) __attribute__ ((__copy__ (arg)))
+#else
+# define __attribute_copy__(arg)
+#endif
+
+#if (!defined _Static_assert && !defined __cplusplus \
+     && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
+     && (!(__GNUC_PREREQ (4, 6) || __clang_major__ >= 4) \
+         || defined __STRICT_ANSI__))
+# define _Static_assert(expr, diagnostic) \
+    extern int (*__Static_assert_function (void)) \
+      [!!sizeof (struct { int __error_if_negative: (expr) ? 2 : -1; })]
+#endif
+
+/* Gnulib avoids including these, as they don't work on non-glibc or
+   older glibc platforms.  */
+#ifndef __GNULIB_CDEFS
+# include <bits/wordsize.h>
+# include <bits/long-double.h>
+#endif
+
+#if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
+# ifdef __REDIRECT
+
+/* Alias name defined automatically.  */
+#  define __LDBL_REDIR(name, proto) ... unused__ldbl_redir
+#  define __LDBL_REDIR_DECL(name) \
+  extern __typeof (name) name __asm (__ASMNAME ("__" #name "ieee128"));
+
+/* Alias name defined automatically, with leading underscores.  */
+#  define __LDBL_REDIR2_DECL(name) \
+  extern __typeof (__##name) __##name \
+    __asm (__ASMNAME ("__" #name "ieee128"));
+
+/* Alias name defined manually.  */
+#  define __LDBL_REDIR1(name, proto, alias) ... unused__ldbl_redir1
+#  define __LDBL_REDIR1_DECL(name, alias) \
+  extern __typeof (name) name __asm (__ASMNAME (#alias));
+
+#  define __LDBL_REDIR1_NTH(name, proto, alias) \
+  __REDIRECT_NTH (name, proto, alias)
+#  define __REDIRECT_NTH_LDBL(name, proto, alias) \
+  __LDBL_REDIR1_NTH (name, proto, __##alias##ieee128)
+
+/* Unused.  */
+#  define __REDIRECT_LDBL(name, proto, alias) ... unused__redirect_ldbl
+#  define __LDBL_REDIR_NTH(name, proto) ... unused__ldbl_redir_nth
+
+# else
+_Static_assert (0, "IEEE 128-bits long double requires redirection on this platform");
+# endif
+#elif defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
+# define __LDBL_COMPAT 1
+# ifdef __REDIRECT
+#  define __LDBL_REDIR1(name, proto, alias) __REDIRECT (name, proto, alias)
+#  define __LDBL_REDIR(name, proto) \
+  __LDBL_REDIR1 (name, proto, __nldbl_##name)
+#  define __LDBL_REDIR1_NTH(name, proto, alias) __REDIRECT_NTH (name, proto, alias)
+#  define __LDBL_REDIR_NTH(name, proto) \
+  __LDBL_REDIR1_NTH (name, proto, __nldbl_##name)
+#  define __LDBL_REDIR2_DECL(name) \
+  extern __typeof (__##name) __##name __asm (__ASMNAME ("__nldbl___" #name));
+#  define __LDBL_REDIR1_DECL(name, alias) \
+  extern __typeof (name) name __asm (__ASMNAME (#alias));
+#  define __LDBL_REDIR_DECL(name) \
+  extern __typeof (name) name __asm (__ASMNAME ("__nldbl_" #name));
+#  define __REDIRECT_LDBL(name, proto, alias) \
+  __LDBL_REDIR1 (name, proto, __nldbl_##alias)
+#  define __REDIRECT_NTH_LDBL(name, proto, alias) \
+  __LDBL_REDIR1_NTH (name, proto, __nldbl_##alias)
+# endif
+#endif
+#if (!defined __LDBL_COMPAT && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0) \
+    || !defined __REDIRECT
+# define __LDBL_REDIR1(name, proto, alias) name proto
+# define __LDBL_REDIR(name, proto) name proto
+# define __LDBL_REDIR1_NTH(name, proto, alias) name proto __THROW
+# define __LDBL_REDIR_NTH(name, proto) name proto __THROW
+# define __LDBL_REDIR2_DECL(name)
+# define __LDBL_REDIR_DECL(name)
+# ifdef __REDIRECT
+#  define __REDIRECT_LDBL(name, proto, alias) __REDIRECT (name, proto, alias)
+#  define __REDIRECT_NTH_LDBL(name, proto, alias) \
+  __REDIRECT_NTH (name, proto, alias)
+# endif
+#endif
+
+/* __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+   intended for use in preprocessor macros.
+
+   Note: MESSAGE must be a _single_ string; concatenation of string
+   literals is not supported.  */
+#if __GNUC_PREREQ (4,8) || __glibc_clang_prereq (3,5)
+# define __glibc_macro_warning1(message) _Pragma (#message)
+# define __glibc_macro_warning(message) \
+  __glibc_macro_warning1 (GCC warning message)
+#else
+# define __glibc_macro_warning(msg)
+#endif
+
+/* Generic selection (ISO C11) is a C-only feature, available in GCC
+   since version 4.9.  Previous versions do not provide generic
+   selection, even though they might set __STDC_VERSION__ to 201112L,
+   when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+   when testing __STDC_VERSION__ for generic selection support.
+   On the other hand, Clang also defines __GNUC__, so a clang-specific
+   check is required to enable the use of generic selection.  */
+#if !defined __cplusplus \
+    && (__GNUC_PREREQ (4, 9) \
+	|| __glibc_has_extension (c_generic_selections) \
+	|| (!defined __GNUC__ && defined __STDC_VERSION__ \
+	    && __STDC_VERSION__ >= 201112L))
+# define __HAVE_GENERIC_SELECTION 1
+#else
+# define __HAVE_GENERIC_SELECTION 0
+#endif
+
+#if __GNUC_PREREQ (10, 0)
+/* Designates a 1-based positional argument ref-index of pointer type
+   that can be used to access size-index elements of the pointed-to
+   array according to access mode, or at least one element when
+   size-index is not provided:
+     access (access-mode, <ref-index> [, <size-index>])  */
+#define __attr_access(x) __attribute__ ((__access__ x))
+#else
+#  define __attr_access(x)
+#endif
+
+/* Specify that a function such as setjmp or vfork may return
+   twice.  */
+#if __GNUC_PREREQ (4, 1)
+# define __attribute_returns_twice__ __attribute__ ((__returns_twice__))
+#else
+# define __attribute_returns_twice__ /* Ignore.  */
+#endif
+
+#endif	 /* sys/cdefs.h */
diff --git a/src/grep/lib/chdir-long.c b/src/grep/lib/chdir-long.c
new file mode 100644
index 0000000..0d693b0
--- /dev/null
+++ b/src/grep/lib/chdir-long.c
@@ -0,0 +1,264 @@
+/* provide a chdir function that tries not to fail due to ENAMETOOLONG
+   Copyright (C) 2004-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#include <config.h>
+
+#include "chdir-long.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "assure.h"
+
+#ifndef PATH_MAX
+# error "compile this file only if your system defines PATH_MAX"
+#endif
+
+/* The results of openat() in this file are not leaked to any
+   single-threaded code that could use stdio.
+   FIXME - if the kernel ever adds support for multi-thread safety for
+   avoiding standard fds, then we should use openat_safer.  */
+
+struct cd_buf
+{
+  int fd;
+};
+
+static void
+cdb_init (struct cd_buf *cdb)
+{
+  cdb->fd = AT_FDCWD;
+}
+
+static int
+cdb_fchdir (struct cd_buf const *cdb)
+{
+  return fchdir (cdb->fd);
+}
+
+static void
+cdb_free (struct cd_buf const *cdb)
+{
+  if (0 <= cdb->fd)
+    {
+      bool close_fail = close (cdb->fd);
+      assure (! close_fail);
+    }
+}
+
+/* Given a file descriptor of an open directory (or AT_FDCWD), CDB->fd,
+   try to open the CDB->fd-relative directory, DIR.  If the open succeeds,
+   update CDB->fd with the resulting descriptor, close the incoming file
+   descriptor, and return zero.  Upon failure, return -1 and set errno.  */
+static int
+cdb_advance_fd (struct cd_buf *cdb, char const *dir)
+{
+  int new_fd = openat (cdb->fd, dir,
+                       O_SEARCH | O_DIRECTORY | O_NOCTTY | O_NONBLOCK);
+  if (new_fd < 0)
+    return -1;
+
+  cdb_free (cdb);
+  cdb->fd = new_fd;
+
+  return 0;
+}
+
+/* Return a pointer to the first non-slash in S.  */
+static char * _GL_ATTRIBUTE_PURE
+find_non_slash (char const *s)
+{
+  size_t n_slash = strspn (s, "/");
+  return (char *) s + n_slash;
+}
+
+/* This is a function much like chdir, but without the PATH_MAX limitation
+   on the length of the directory name.  A significant difference is that
+   it must be able to modify (albeit only temporarily) the directory
+   name.  It handles an arbitrarily long directory name by operating
+   on manageable portions of the name.  On systems without the openat
+   syscall, this means changing the working directory to more and more
+   "distant" points along the long directory name and then restoring
+   the working directory.  If any of those attempts to save or restore
+   the working directory fails, this function exits nonzero.
+
+   Note that this function may still fail with errno == ENAMETOOLONG, but
+   only if the specified directory name contains a component that is long
+   enough to provoke such a failure all by itself (e.g. if the component
+   has length PATH_MAX or greater on systems that define PATH_MAX).  */
+
+int
+chdir_long (char *dir)
+{
+  int e = chdir (dir);
+  if (e == 0 || errno != ENAMETOOLONG)
+    return e;
+
+  {
+    size_t len = strlen (dir);
+    char *dir_end = dir + len;
+    struct cd_buf cdb;
+    size_t n_leading_slash;
+
+    cdb_init (&cdb);
+
+    /* If DIR is the empty string, then the chdir above
+       must have failed and set errno to ENOENT.  */
+    assure (0 < len);
+    assure (PATH_MAX <= len);
+
+    /* Count leading slashes.  */
+    n_leading_slash = strspn (dir, "/");
+
+    /* Handle any leading slashes as well as any name that matches
+       the regular expression, m!^//hostname[/]*! .  Handling this
+       prefix separately usually results in a single additional
+       cdb_advance_fd call, but it's worthwhile, since it makes the
+       code in the following loop cleaner.  */
+    if (n_leading_slash == 2)
+      {
+        int err;
+        /* Find next slash.
+           We already know that dir[2] is neither a slash nor '\0'.  */
+        char *slash = memchr (dir + 3, '/', dir_end - (dir + 3));
+        if (slash == NULL)
+          {
+            errno = ENAMETOOLONG;
+            return -1;
+          }
+        *slash = '\0';
+        err = cdb_advance_fd (&cdb, dir);
+        *slash = '/';
+        if (err != 0)
+          goto Fail;
+        dir = find_non_slash (slash + 1);
+      }
+    else if (n_leading_slash)
+      {
+        if (cdb_advance_fd (&cdb, "/") != 0)
+          goto Fail;
+        dir += n_leading_slash;
+      }
+
+    assure (*dir != '/');
+    assure (dir <= dir_end);
+
+    while (PATH_MAX <= dir_end - dir)
+      {
+        int err;
+        /* Find a slash that is PATH_MAX or fewer bytes away from dir.
+           I.e. see if there is a slash that will give us a name of
+           length PATH_MAX-1 or less.  */
+        char *slash = memrchr (dir, '/', PATH_MAX);
+        if (slash == NULL)
+          {
+            errno = ENAMETOOLONG;
+            return -1;
+          }
+
+        *slash = '\0';
+        assure (slash - dir < PATH_MAX);
+        err = cdb_advance_fd (&cdb, dir);
+        *slash = '/';
+        if (err != 0)
+          goto Fail;
+
+        dir = find_non_slash (slash + 1);
+      }
+
+    if (dir < dir_end)
+      {
+        if (cdb_advance_fd (&cdb, dir) != 0)
+          goto Fail;
+      }
+
+    if (cdb_fchdir (&cdb) != 0)
+      goto Fail;
+
+    cdb_free (&cdb);
+    return 0;
+
+   Fail:
+    {
+      int saved_errno = errno;
+      cdb_free (&cdb);
+      errno = saved_errno;
+      return -1;
+    }
+  }
+}
+
+#if TEST_CHDIR
+
+# include "closeout.h"
+# include "error.h"
+
+int
+main (int argc, char *argv[])
+{
+  char *line = NULL;
+  size_t n = 0;
+  int len;
+
+  atexit (close_stdout);
+
+  len = getline (&line, &n, stdin);
+  if (len < 0)
+    {
+      int saved_errno = errno;
+      if (feof (stdin))
+        exit (0);
+
+      error (EXIT_FAILURE, saved_errno,
+             "reading standard input");
+    }
+  else if (len == 0)
+    exit (0);
+
+  if (line[len-1] == '\n')
+    line[len-1] = '\0';
+
+  if (chdir_long (line) != 0)
+    error (EXIT_FAILURE, errno,
+           "chdir_long failed: %s", line);
+
+  if (argc <= 1)
+    {
+      /* Using 'pwd' here makes sense only if it is a robust implementation,
+         like the one in coreutils after the 2004-04-19 changes.  */
+      char const *cmd = "pwd";
+      execlp (cmd, (char *) NULL);
+      error (EXIT_FAILURE, errno, "%s", cmd);
+    }
+
+  fclose (stdin);
+  fclose (stderr);
+
+  exit (EXIT_SUCCESS);
+}
+#endif
+
+/*
+Local Variables:
+compile-command: "gcc -DTEST_CHDIR=1 -g -O -W -Wall chdir-long.c libcoreutils.a"
+End:
+*/
diff --git a/src/grep/lib/chdir-long.h b/src/grep/lib/chdir-long.h
new file mode 100644
index 0000000..17d9aa5
--- /dev/null
+++ b/src/grep/lib/chdir-long.h
@@ -0,0 +1,30 @@
+/* provide a chdir function that tries not to fail due to ENAMETOOLONG
+   Copyright (C) 2004-2005, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <unistd.h>
+#include <limits.h>
+
+#include "pathmax.h"
+
+/* On systems without PATH_MAX, presume that chdir accepts
+   arbitrarily long directory names.  */
+#ifndef PATH_MAX
+# define chdir_long(Dir) chdir (Dir)
+#else
+int chdir_long (char *dir);
+#endif
diff --git a/src/grep/lib/cloexec.c b/src/grep/lib/cloexec.c
new file mode 100644
index 0000000..7defa93
--- /dev/null
+++ b/src/grep/lib/cloexec.c
@@ -0,0 +1,83 @@
+/* cloexec.c - set or clear the close-on-exec descriptor flag
+
+   Copyright (C) 1991, 2004-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* The code is taken from glibc/manual/llio.texi  */
+
+#include <config.h>
+
+#include "cloexec.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+/* Set the 'FD_CLOEXEC' flag of DESC if VALUE is true,
+   or clear the flag if VALUE is false.
+   Return 0 on success, or -1 on error with 'errno' set.
+
+   Note that on MingW, this function does NOT protect DESC from being
+   inherited into spawned children.  Instead, either use dup_cloexec
+   followed by closing the original DESC, or use interfaces such as
+   open or pipe2 that accept flags like O_CLOEXEC to create DESC
+   non-inheritable in the first place.  */
+
+int
+set_cloexec_flag (int desc, bool value)
+{
+#ifdef F_SETFD
+
+  int flags = fcntl (desc, F_GETFD, 0);
+
+  if (0 <= flags)
+    {
+      int newflags = (value ? flags | FD_CLOEXEC : flags & ~FD_CLOEXEC);
+
+      if (flags == newflags
+          || fcntl (desc, F_SETFD, newflags) != -1)
+        return 0;
+    }
+
+  return -1;
+
+#else /* !F_SETFD */
+
+  /* Use dup2 to reject invalid file descriptors; the cloexec flag
+     will be unaffected.  */
+  if (desc < 0)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  if (dup2 (desc, desc) < 0)
+    /* errno is EBADF here.  */
+    return -1;
+
+  /* There is nothing we can do on this kind of platform.  Punt.  */
+  return 0;
+#endif /* !F_SETFD */
+}
+
+
+/* Duplicates a file handle FD, while marking the copy to be closed
+   prior to exec or spawn.  Returns -1 and sets errno if FD could not
+   be duplicated.  */
+
+int
+dup_cloexec (int fd)
+{
+  return fcntl (fd, F_DUPFD_CLOEXEC, 0);
+}
diff --git a/src/grep/lib/cloexec.h b/src/grep/lib/cloexec.h
new file mode 100644
index 0000000..97a3659
--- /dev/null
+++ b/src/grep/lib/cloexec.h
@@ -0,0 +1,36 @@
+/* cloexec.c - set or clear the close-on-exec descriptor flag
+
+   Copyright (C) 2004, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <stdbool.h>
+
+/* Set the 'FD_CLOEXEC' flag of DESC if VALUE is true,
+   or clear the flag if VALUE is false.
+   Return 0 on success, or -1 on error with 'errno' set.
+
+   Note that on MingW, this function does NOT protect DESC from being
+   inherited into spawned children.  Instead, either use dup_cloexec
+   followed by closing the original DESC, or use interfaces such as
+   open or pipe2 that accept flags like O_CLOEXEC to create DESC
+   non-inheritable in the first place.  */
+
+int set_cloexec_flag (int desc, bool value);
+
+/* Duplicates a file handle FD, while marking the copy to be closed
+   prior to exec or spawn.  Returns -1 and sets errno if FD could not
+   be duplicated.  */
+
+int dup_cloexec (int fd);
diff --git a/src/grep/lib/close-stream.c b/src/grep/lib/close-stream.c
new file mode 100644
index 0000000..86f6d6e
--- /dev/null
+++ b/src/grep/lib/close-stream.c
@@ -0,0 +1,78 @@
+/* Close a stream, with nicer error checking than fclose's.
+
+   Copyright (C) 1998-2002, 2004, 2006-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "close-stream.h"
+
+#include <errno.h>
+#include <stdbool.h>
+
+#include "fpending.h"
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
+
+/* Close STREAM.  Return 0 if successful, EOF (setting errno)
+   otherwise.  A failure might set errno to 0 if the error number
+   cannot be determined.
+
+   A failure with errno set to EPIPE may or may not indicate an error
+   situation worth signaling to the user.  See the documentation of the
+   close_stdout_set_ignore_EPIPE function for details.
+
+   If a program writes *anything* to STREAM, that program should close
+   STREAM and make sure that it succeeds before exiting.  Otherwise,
+   suppose that you go to the extreme of checking the return status
+   of every function that does an explicit write to STREAM.  The last
+   printf can succeed in writing to the internal stream buffer, and yet
+   the fclose(STREAM) could still fail (due e.g., to a disk full error)
+   when it tries to write out that buffered data.  Thus, you would be
+   left with an incomplete output file and the offending program would
+   exit successfully.  Even calling fflush is not always sufficient,
+   since some file systems (NFS and CODA) buffer written/flushed data
+   until an actual close call.
+
+   Besides, it's wasteful to check the return value from every call
+   that writes to STREAM -- just let the internal stream state record
+   the failure.  That's what the ferror test is checking below.  */
+
+int
+close_stream (FILE *stream)
+{
+  const bool some_pending = (__fpending (stream) != 0);
+  const bool prev_fail = (ferror (stream) != 0);
+  const bool fclose_fail = (fclose (stream) != 0);
+
+  /* Return an error indication if there was a previous failure or if
+     fclose failed, with one exception: ignore an fclose failure if
+     there was no previous error, no data remains to be flushed, and
+     fclose failed with EBADF.  That can happen when a program like cp
+     is invoked like this 'cp a b >&-' (i.e., with standard output
+     closed) and doesn't generate any output (hence no previous error
+     and nothing to be flushed).  */
+
+  if (prev_fail || (fclose_fail && (some_pending || errno != EBADF)))
+    {
+      if (! fclose_fail)
+        errno = 0;
+      return EOF;
+    }
+
+  return 0;
+}
diff --git a/src/grep/lib/close-stream.h b/src/grep/lib/close-stream.h
new file mode 100644
index 0000000..8a58a48
--- /dev/null
+++ b/src/grep/lib/close-stream.h
@@ -0,0 +1,20 @@
+/* Close a stream, with nicer error checking than fclose's.
+
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License,
+   or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+
+int close_stream (FILE *stream);
diff --git a/src/grep/lib/close.c b/src/grep/lib/close.c
new file mode 100644
index 0000000..5b9ab6c
--- /dev/null
+++ b/src/grep/lib/close.c
@@ -0,0 +1,75 @@
+/* close replacement.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include <errno.h>
+
+#include "fd-hook.h"
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#undef close
+
+#if defined _WIN32 && !defined __CYGWIN__
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static int
+close_nothrow (int fd)
+{
+  int result;
+
+  TRY_MSVC_INVAL
+    {
+      result = _close (fd);
+    }
+  CATCH_MSVC_INVAL
+    {
+      result = -1;
+      errno = EBADF;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+# else
+#  define close_nothrow _close
+# endif
+#else
+# define close_nothrow close
+#endif
+
+/* Override close() to call into other gnulib modules.  */
+
+int
+rpl_close (int fd)
+{
+#if WINDOWS_SOCKETS
+  int retval = execute_all_close_hooks (close_nothrow, fd);
+#else
+  int retval = close_nothrow (fd);
+#endif
+
+#if REPLACE_FCHDIR
+  if (retval >= 0)
+    _gl_unregister_fd (fd);
+#endif
+
+  return retval;
+}
diff --git a/src/grep/lib/closedir.c b/src/grep/lib/closedir.c
new file mode 100644
index 0000000..80a500b
--- /dev/null
+++ b/src/grep/lib/closedir.c
@@ -0,0 +1,71 @@
+/* Stop reading the entries of a directory.
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <dirent.h>
+
+#if REPLACE_FCHDIR
+# include <unistd.h>
+#endif
+
+#if HAVE_CLOSEDIR
+
+/* Override closedir(), to keep track of the open file descriptors.
+   Needed because there is a function dirfd().  */
+
+#else
+
+# include <stdlib.h>
+
+# include "dirent-private.h"
+
+#endif
+
+int
+closedir (DIR *dirp)
+{
+# if REPLACE_FCHDIR || REPLACE_DIRFD
+  int fd = dirfd (dirp);
+# endif
+  int retval;
+
+#if HAVE_CLOSEDIR
+# undef closedir
+
+  retval = closedir (dirp);
+
+# ifdef __KLIBC__
+  if (!retval)
+    _gl_unregister_dirp_fd (fd);
+# endif
+#else
+
+  if (dirp->current != INVALID_HANDLE_VALUE)
+    FindClose (dirp->current);
+  free (dirp);
+
+  retval = 0;
+
+#endif
+
+#if REPLACE_FCHDIR
+  if (retval >= 0)
+    _gl_unregister_fd (fd);
+#endif
+  return retval;
+}
diff --git a/src/grep/lib/closeout.c b/src/grep/lib/closeout.c
new file mode 100644
index 0000000..a0c935f
--- /dev/null
+++ b/src/grep/lib/closeout.c
@@ -0,0 +1,136 @@
+/* Close standard output and standard error, exiting with a diagnostic on error.
+
+   Copyright (C) 1998-2002, 2004, 2006, 2008-2021 Free Software Foundation,
+   Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "closeout.h"
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+#include "close-stream.h"
+#include "error.h"
+#include "exitfail.h"
+#include "quotearg.h"
+
+#ifndef __has_feature
+# define __has_feature(a) false
+#endif
+
+#if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
+enum { SANITIZE_ADDRESS = true };
+#else
+enum { SANITIZE_ADDRESS = false };
+#endif
+
+static const char *file_name;
+
+/* Set the file name to be reported in the event an error is detected
+   by close_stdout.  */
+void
+close_stdout_set_file_name (const char *file)
+{
+  file_name = file;
+}
+
+static bool ignore_EPIPE /* = false */;
+
+/* Specify the reaction to an EPIPE error during the closing of stdout:
+     - If ignore = true, it shall be ignored.
+     - If ignore = false, it shall evoke a diagnostic, along with a nonzero
+       exit status.
+   The default is ignore = false.
+
+   This setting matters only if the SIGPIPE signal is ignored (i.e. its
+   handler set to SIG_IGN) or blocked.  Only particular programs need to
+   temporarily ignore SIGPIPE.  If SIGPIPE is ignored or blocked because
+   it was ignored or blocked in the parent process when it created the
+   child process, it usually is a bug in the parent process: It is bad
+   practice to have SIGPIPE ignored or blocked while creating a child
+   process.
+
+   EPIPE occurs when writing to a pipe or socket that has no readers now,
+   when SIGPIPE is ignored or blocked.
+
+   The ignore = false setting is suitable for a scenario where it is normally
+   guaranteed that the pipe writer terminates before the pipe reader.  In
+   this case, an EPIPE is an indication of a premature termination of the
+   pipe reader and should lead to a diagnostic and a nonzero exit status.
+
+   The ignore = true setting is suitable for a scenario where you don't know
+   ahead of time whether the pipe writer or the pipe reader will terminate
+   first.  In this case, an EPIPE is an indication that the pipe writer can
+   stop doing useless write() calls; this is what close_stdout does anyway.
+   EPIPE is part of the normal pipe/socket shutdown protocol in this case,
+   and should not lead to a diagnostic message.  */
+
+void
+close_stdout_set_ignore_EPIPE (bool ignore)
+{
+  ignore_EPIPE = ignore;
+}
+
+/* Close standard output.  On error, issue a diagnostic and _exit
+   with status 'exit_failure'.
+
+   Also close standard error.  On error, _exit with status 'exit_failure'.
+
+   Since close_stdout is commonly registered via 'atexit', POSIX
+   and the C standard both say that it should not call 'exit',
+   because the behavior is undefined if 'exit' is called more than
+   once.  So it calls '_exit' instead of 'exit'.  If close_stdout
+   is registered via atexit before other functions are registered,
+   the other functions can act before this _exit is invoked.
+
+   Applications that use close_stdout should flush any streams
+   other than stdout and stderr before exiting, since the call to
+   _exit will bypass other buffer flushing.  Applications should
+   be flushing and closing other streams anyway, to check for I/O
+   errors.  Also, applications should not use tmpfile, since _exit
+   can bypass the removal of these files.
+
+   It's important to detect such failures and exit nonzero because many
+   tools (most notably 'make' and other build-management systems) depend
+   on being able to detect failure in other tools via their exit status.  */
+
+void
+close_stdout (void)
+{
+  if (close_stream (stdout) != 0
+      && !(ignore_EPIPE && errno == EPIPE))
+    {
+      char const *write_error = _("write error");
+      if (file_name)
+        error (0, errno, "%s: %s", quotearg_colon (file_name),
+               write_error);
+      else
+        error (0, errno, "%s", write_error);
+
+      _exit (exit_failure);
+    }
+
+  /* Close stderr only if not sanitizing, as sanitizers may report to
+     stderr after this function returns.  */
+  if (!SANITIZE_ADDRESS && close_stream (stderr) != 0)
+    _exit (exit_failure);
+}
diff --git a/src/grep/lib/closeout.h b/src/grep/lib/closeout.h
new file mode 100644
index 0000000..68a6425
--- /dev/null
+++ b/src/grep/lib/closeout.h
@@ -0,0 +1,36 @@
+/* Close standard output and standard error.
+
+   Copyright (C) 1998, 2000, 2003-2004, 2006, 2008-2021 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef CLOSEOUT_H
+# define CLOSEOUT_H 1
+
+# include <stdbool.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+void close_stdout_set_file_name (const char *file);
+void close_stdout_set_ignore_EPIPE (bool ignore);
+void close_stdout (void);
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
diff --git a/src/grep/lib/colorize-posix.c b/src/grep/lib/colorize-posix.c
new file mode 100644
index 0000000..977ea5b
--- /dev/null
+++ b/src/grep/lib/colorize-posix.c
@@ -0,0 +1,58 @@
+/* Output colorization.
+   Copyright 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+/* Without this pragma, gcc 4.7.0 20120102 suggests that the
+   init_colorize function might be candidate for attribute 'const'  */
+#if (__GNUC__ == 4 && 6 <= __GNUC_MINOR__) || 4 < __GNUC__
+# pragma GCC diagnostic ignored "-Wsuggest-attribute=const"
+#endif
+
+#include <config.h>
+
+#include "colorize.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/* Return non-zero if we should highlight matches in output to file
+   descriptor FD.  */
+int
+should_colorize (void)
+{
+  char const *t = getenv ("TERM");
+  return t && strcmp (t, "dumb") != 0;
+}
+
+void init_colorize (void) { }
+
+/* Start a colorized text attribute on stdout using the SGR_START
+   format; the attribute is specified by SGR_SEQ.  */
+void
+print_start_colorize (char const *sgr_start, char const *sgr_seq)
+{
+  printf (sgr_start, sgr_seq);
+}
+
+/* Restore the normal text attribute using the SGR_END string.  */
+void
+print_end_colorize (char const *sgr_end)
+{
+  fputs (sgr_end, stdout);
+}
diff --git a/src/grep/lib/colorize-w32.c b/src/grep/lib/colorize-w32.c
new file mode 100644
index 0000000..a6e8d09
--- /dev/null
+++ b/src/grep/lib/colorize-w32.c
@@ -0,0 +1,208 @@
+/* Output colorization on MS-Windows.
+   Copyright 2011-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+/* Written by Eli Zaretskii.  */
+
+#include <config.h>
+
+#include "colorize.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#undef DATADIR	/* conflicts with objidl.h, which is included by windows.h */
+#include <windows.h>
+
+static HANDLE hstdout = INVALID_HANDLE_VALUE;
+static SHORT norm_attr;
+
+/* Initialize the normal text attribute used by the console.  */
+void
+init_colorize (void)
+{
+  CONSOLE_SCREEN_BUFFER_INFO csbi;
+
+  hstdout = GetStdHandle (STD_OUTPUT_HANDLE);
+  if (hstdout != INVALID_HANDLE_VALUE
+      && GetConsoleScreenBufferInfo (hstdout, &csbi))
+     norm_attr = csbi.wAttributes;
+  else
+    hstdout = INVALID_HANDLE_VALUE;
+}
+
+/* Return non-zero if we should highlight matches in output.  */
+int
+should_colorize (void)
+{
+  /* $TERM is not normally defined on DOS/Windows, so don't require
+     it for highlighting.  But some programs, like Emacs, do define
+     it when running Grep as a subprocess, so make sure they don't
+     set TERM=dumb.  */
+  char const *t = getenv ("TERM");
+  return ! (t && strcmp (t, "dumb") == 0);
+}
+
+/* Convert a color spec, a semi-colon separated list of the form
+   "NN;MM;KK;...", where each number is a value of the SGR parameter,
+   into the corresponding Windows console text attribute.
+
+   This function supports a subset of the SGR rendition aspects that
+   the Windows console can display.  */
+static int
+w32_sgr2attr (const char *sgr_seq)
+{
+  const char *s, *p;
+  int code, fg = norm_attr & 15, bg = norm_attr & (15 << 4);
+  int bright = 0, inverse = 0;
+  static const int fg_color[] = {
+    0,			/* black */
+    FOREGROUND_RED,	/* red */
+    FOREGROUND_GREEN,	/* green */
+    FOREGROUND_GREEN | FOREGROUND_RED, /* yellow */
+    FOREGROUND_BLUE,		       /* blue */
+    FOREGROUND_BLUE | FOREGROUND_RED,  /* magenta */
+    FOREGROUND_BLUE | FOREGROUND_GREEN, /* cyan */
+    FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE /* gray */
+  };
+  static const int bg_color[] = {
+    0,			/* black */
+    BACKGROUND_RED,	/* red */
+    BACKGROUND_GREEN,	/* green */
+    BACKGROUND_GREEN | BACKGROUND_RED, /* yellow */
+    BACKGROUND_BLUE,		       /* blue */
+    BACKGROUND_BLUE | BACKGROUND_RED,  /* magenta */
+    BACKGROUND_BLUE | BACKGROUND_GREEN, /* cyan */
+    BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE /* gray */
+  };
+
+  for (s = p = sgr_seq; *s; p++)
+    {
+      if (*p == ';' || *p == '\0')
+        {
+          code = strtol (s, NULL, 10);
+          s = p + (*p != '\0');
+
+          switch (code)
+            {
+            case 0:	/* all attributes off */
+              fg = norm_attr & 15;
+              bg = norm_attr & (15 << 4);
+              bright = 0;
+              inverse = 0;
+              break;
+            case 1:	/* intensity on */
+              bright = 1;
+              break;
+            case 7:	/* inverse video */
+              inverse = 1;
+              break;
+            case 22:	/* intensity off */
+              bright = 0;
+              break;
+            case 27:	/* inverse off */
+              inverse = 0;
+              break;
+            case 30: case 31: case 32: case 33: /* foreground color */
+            case 34: case 35: case 36: case 37:
+              fg = fg_color[code - 30];
+              break;
+            case 39:	/* default foreground */
+              fg = norm_attr & 15;
+              break;
+            case 40: case 41: case 42: case 43: /* background color */
+            case 44: case 45: case 46: case 47:
+              bg = bg_color[code - 40];
+              break;
+            case 49:	/* default background */
+              bg = norm_attr & (15 << 4);
+              break;
+            default:
+              break;
+            }
+        }
+    }
+  if (inverse)
+    {
+      int t = fg;
+      fg = (bg >> 4);
+      bg = (t << 4);
+    }
+  if (bright)
+    fg |= FOREGROUND_INTENSITY;
+
+  return (bg & (15 << 4)) | (fg & 15);
+}
+
+/* Start a colorized text attribute on stdout using the SGR_START
+   format; the attribute is specified by SGR_SEQ.  */
+void
+print_start_colorize (char const *sgr_start, char const *sgr_seq)
+{
+  /* If stdout is connected to a console, set the console text
+     attribute directly instead of using SGR_START.  Otherwise, use
+     SGR_START to emit the SGR escape sequence as on Posix platforms;
+     this is needed when Grep is invoked as a subprocess of another
+     program, such as Emacs, which will handle the display of the
+     matches.  */
+  if (hstdout != INVALID_HANDLE_VALUE)
+    {
+      SHORT attr = w32_sgr2attr (sgr_seq);
+      SetConsoleTextAttribute (hstdout, attr);
+    }
+  else
+    printf (sgr_start, sgr_seq);
+}
+
+/* Clear to the end of the current line with the default attribute.
+   This is needed for reasons similar to those that require the "EL to
+   Right after SGR" operation on Posix platforms: if we don't do this,
+   setting the 'mt', 'ms', or 'mc' capabilities to use a non-default
+   background color spills that color to the empty space at the end of
+   the last screen line in a match whose line spans multiple screen
+   lines.  */
+static void
+w32_clreol (void)
+{
+  DWORD nchars;
+  COORD start_pos;
+  DWORD written;
+  CONSOLE_SCREEN_BUFFER_INFO csbi;
+
+  GetConsoleScreenBufferInfo (hstdout, &csbi);
+  start_pos = csbi.dwCursorPosition;
+  nchars = csbi.dwSize.X - start_pos.X;
+
+  FillConsoleOutputAttribute (hstdout, norm_attr, nchars, start_pos,
+                              &written);
+  FillConsoleOutputCharacter (hstdout, ' ', nchars, start_pos, &written);
+}
+
+/* Restore the normal text attribute using the SGR_END string.  */
+void
+print_end_colorize (char const *sgr_end)
+{
+  if (hstdout != INVALID_HANDLE_VALUE)
+    {
+      SetConsoleTextAttribute (hstdout, norm_attr);
+      w32_clreol ();
+    }
+  else
+    fputs (sgr_end, stdout);
+}
diff --git a/src/grep/lib/colorize.h b/src/grep/lib/colorize.h
new file mode 100644
index 0000000..c027ad9
--- /dev/null
+++ b/src/grep/lib/colorize.h
@@ -0,0 +1,22 @@
+/* Output colorization.
+
+   Copyright 2011-2021 Free Software Foundation, Inc.
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+extern int should_colorize (void);
+extern void init_colorize (void);
+extern void print_start_colorize (char const *sgr_start, char const *sgr_seq);
+extern void print_end_colorize (char const *sgr_end);
diff --git a/src/grep/lib/creat-safer.c b/src/grep/lib/creat-safer.c
new file mode 100644
index 0000000..4e3c61c
--- /dev/null
+++ b/src/grep/lib/creat-safer.c
@@ -0,0 +1,31 @@
+/* Invoke creat, but avoid some glitches.
+
+   Copyright (C) 2005-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "fcntl-safer.h"
+
+#include <fcntl.h>
+#include "unistd-safer.h"
+
+int
+creat_safer (char const *file, mode_t mode)
+{
+  return fd_safer (creat (file, mode));
+}
diff --git a/src/grep/lib/ctype.in.h b/src/grep/lib/ctype.in.h
new file mode 100644
index 0000000..70ad70b
--- /dev/null
+++ b/src/grep/lib/ctype.in.h
@@ -0,0 +1,57 @@
+/* A substitute for ISO C99 <ctype.h>, for platforms on which it is incomplete.
+
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible.  */
+
+/*
+ * ISO C 99 <ctype.h> for platforms on which it is incomplete.
+ * <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/ctype.h.html>
+ */
+
+#ifndef _@GUARD_PREFIX@_CTYPE_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* Include the original <ctype.h>.  */
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_CTYPE_H@
+
+#ifndef _@GUARD_PREFIX@_CTYPE_H
+#define _@GUARD_PREFIX@_CTYPE_H
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+/* Return non-zero if c is a blank, i.e. a space or tab character.  */
+#if @GNULIB_ISBLANK@
+# if !@HAVE_ISBLANK@
+_GL_EXTERN_C int isblank (int c);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef isblank
+# if HAVE_RAW_DECL_ISBLANK
+_GL_WARN_ON_USE (isblank, "isblank is unportable - "
+                 "use gnulib module isblank for portability");
+# endif
+#endif
+
+#endif /* _@GUARD_PREFIX@_CTYPE_H */
+#endif /* _@GUARD_PREFIX@_CTYPE_H */
diff --git a/src/grep/lib/cycle-check.c b/src/grep/lib/cycle-check.c
new file mode 100644
index 0000000..f064863
--- /dev/null
+++ b/src/grep/lib/cycle-check.c
@@ -0,0 +1,85 @@
+/* help detect directory cycles efficiently
+
+   Copyright (C) 2003-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering */
+
+#include <config.h>
+
+#include "cycle-check.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+
+#include "assure.h"
+
+#define CC_MAGIC 9827862
+
+/* Return true if I is a power of 2, or is zero.  */
+
+static bool
+is_zero_or_power_of_two (uintmax_t i)
+{
+  return (i & (i - 1)) == 0;
+}
+
+void
+cycle_check_init (struct cycle_check_state *state)
+{
+  state->chdir_counter = 0;
+  state->magic = CC_MAGIC;
+}
+
+/* In traversing a directory hierarchy, call this function once for each
+   descending chdir call, with SB corresponding to the chdir operand.
+   If SB corresponds to a directory that has already been seen,
+   return true to indicate that there is a directory cycle.
+   Note that this is done "lazily", which means that some of
+   the directories in the cycle may be processed twice before
+   the cycle is detected.  */
+
+bool
+cycle_check (struct cycle_check_state *state, struct stat const *sb)
+{
+  assure (state->magic == CC_MAGIC);
+
+  /* If the current directory ever happens to be the same
+     as the one we last recorded for the cycle detection,
+     then it's obviously part of a cycle.  */
+  if (state->chdir_counter && SAME_INODE (*sb, state->dev_ino))
+    return true;
+
+  /* If the number of "descending" chdir calls is a power of two,
+     record the dev/ino of the current directory.  */
+  if (is_zero_or_power_of_two (++(state->chdir_counter)))
+    {
+      /* On all architectures that we know about, if the counter
+         overflows then there is a directory cycle here somewhere,
+         even if we haven't detected it yet.  Typically this happens
+         only after the counter is incremented 2**64 times, so it's a
+         fairly theoretical point.  */
+      if (state->chdir_counter == 0)
+        return true;
+
+      state->dev_ino.st_dev = sb->st_dev;
+      state->dev_ino.st_ino = sb->st_ino;
+    }
+
+  return false;
+}
diff --git a/src/grep/lib/cycle-check.h b/src/grep/lib/cycle-check.h
new file mode 100644
index 0000000..84bf08a
--- /dev/null
+++ b/src/grep/lib/cycle-check.h
@@ -0,0 +1,52 @@
+/* help detect directory cycles efficiently
+
+   Copyright (C) 2003-2004, 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering */
+
+#ifndef CYCLE_CHECK_H
+# define CYCLE_CHECK_H 1
+
+# include <stdint.h>
+# include <stdbool.h>
+# include "dev-ino.h"
+# include "same-inode.h"
+
+struct cycle_check_state
+{
+  struct dev_ino dev_ino;
+  uintmax_t chdir_counter;
+  int magic;
+};
+
+void cycle_check_init (struct cycle_check_state *state);
+bool cycle_check (struct cycle_check_state *state, struct stat const *sb);
+
+# define CYCLE_CHECK_REFLECT_CHDIR_UP(State, SB_dir, SB_subdir) \
+  do                                                            \
+    {                                                           \
+      /* You must call cycle_check at least once before using this macro.  */ \
+      if ((State)->chdir_counter == 0)                          \
+        abort ();                                               \
+      if (SAME_INODE ((State)->dev_ino, SB_subdir))             \
+        {                                                       \
+          (State)->dev_ino.st_dev = (SB_dir).st_dev;            \
+          (State)->dev_ino.st_ino = (SB_dir).st_ino;            \
+        }                                                       \
+    }                                                           \
+  while (0)
+
+#endif
diff --git a/src/grep/lib/dev-ino.h b/src/grep/lib/dev-ino.h
new file mode 100644
index 0000000..7cf1e5f
--- /dev/null
+++ b/src/grep/lib/dev-ino.h
@@ -0,0 +1,31 @@
+/* A simple (device, inode) struct.
+   Copyright (C) 2003-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering, 2003.  */
+
+#ifndef DEV_INO_H
+# define DEV_INO_H 1
+
+# include <sys/types.h>
+# include <sys/stat.h>
+
+struct dev_ino
+{
+  ino_t st_ino;
+  dev_t st_dev;
+};
+
+#endif
diff --git a/src/grep/lib/dfa.c b/src/grep/lib/dfa.c
new file mode 100644
index 0000000..3f85e75
--- /dev/null
+++ b/src/grep/lib/dfa.c
@@ -0,0 +1,4372 @@
+/* dfa.c - deterministic extended regexp routines for GNU
+   Copyright (C) 1988, 1998, 2000, 2002, 2004-2005, 2007-2021 Free Software
+   Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc.,
+   51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA */
+
+/* Written June, 1988 by Mike Haertel
+   Modified July, 1988 by Arthur David Olson to assist BMG speedups  */
+
+#include <config.h>
+
+#include "dfa.h"
+
+#include "flexmember.h"
+#include "idx.h"
+#include "verify.h"
+
+#include <assert.h>
+#include <ctype.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <string.h>
+
+/* Pacify gcc -Wanalyzer-null-dereference in areas where GCC
+   understandably cannot deduce that the input comes from a
+   well-formed regular expression.  There's little point to the
+   runtime overhead of 'assert' instead of 'assume_nonnull' when the
+   MMU will check anyway.  */
+#define assume_nonnull(x) assume ((x) != NULL)
+
+static bool
+streq (char const *a, char const *b)
+{
+  return strcmp (a, b) == 0;
+}
+
+static bool
+isasciidigit (char c)
+{
+  return '0' <= c && c <= '9';
+}
+
+#include "gettext.h"
+#define _(str) gettext (str)
+
+#include <wchar.h>
+
+#include "xalloc.h"
+#include "localeinfo.h"
+
+#ifndef FALLTHROUGH
+# if 201710L < __STDC_VERSION__
+#  define FALLTHROUGH [[__fallthrough__]]
+# elif (__GNUC__ >= 7) || (__clang_major__ >= 10)
+#  define FALLTHROUGH __attribute__ ((__fallthrough__))
+# else
+#  define FALLTHROUGH ((void) 0)
+# endif
+#endif
+
+#ifndef MIN
+# define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+/* HPUX defines these as macros in sys/param.h.  */
+#ifdef setbit
+# undef setbit
+#endif
+#ifdef clrbit
+# undef clrbit
+#endif
+
+/* For code that does not use Gnulib’s isblank module.  */
+#if !defined isblank && !defined HAVE_ISBLANK && !defined GNULIB_ISBLANK
+# define isblank dfa_isblank
+static int
+isblank (int c)
+{
+  return c == ' ' || c == '\t';
+}
+#endif
+
+/* First integer value that is greater than any character code.  */
+enum { NOTCHAR = 1 << CHAR_BIT };
+
+#ifdef UINT_LEAST64_MAX
+
+/* Number of bits used in a charclass word.  */
+enum { CHARCLASS_WORD_BITS = 64 };
+
+/* This represents part of a character class.  It must be unsigned and
+   at least CHARCLASS_WORD_BITS wide.  Any excess bits are zero.  */
+typedef uint_least64_t charclass_word;
+
+/* Part of a charclass initializer that represents 64 bits' worth of a
+   charclass, where LO and HI are the low and high-order 32 bits of
+   the 64-bit quantity.  */
+# define CHARCLASS_PAIR(lo, hi) (((charclass_word) (hi) << 32) + (lo))
+
+#else
+/* Fallbacks for pre-C99 hosts that lack 64-bit integers.  */
+enum { CHARCLASS_WORD_BITS = 32 };
+typedef unsigned long charclass_word;
+# define CHARCLASS_PAIR(lo, hi) lo, hi
+#endif
+
+/* An initializer for a charclass whose 32-bit words are A through H.  */
+#define CHARCLASS_INIT(a, b, c, d, e, f, g, h)		\
+   {{							\
+      CHARCLASS_PAIR (a, b), CHARCLASS_PAIR (c, d),	\
+      CHARCLASS_PAIR (e, f), CHARCLASS_PAIR (g, h)	\
+   }}
+
+/* The maximum useful value of a charclass_word; all used bits are 1.  */
+static charclass_word const CHARCLASS_WORD_MASK
+  = ((charclass_word) 1 << (CHARCLASS_WORD_BITS - 1) << 1) - 1;
+
+/* Number of words required to hold a bit for every character.  */
+enum
+{
+  CHARCLASS_WORDS = (NOTCHAR + CHARCLASS_WORD_BITS - 1) / CHARCLASS_WORD_BITS
+};
+
+/* Sets of unsigned characters are stored as bit vectors in arrays of ints.  */
+typedef struct { charclass_word w[CHARCLASS_WORDS]; } charclass;
+
+/* Convert a possibly-signed character to an unsigned character.  This is
+   a bit safer than casting to unsigned char, since it catches some type
+   errors that the cast doesn't.  */
+static unsigned char
+to_uchar (char ch)
+{
+  return ch;
+}
+
+/* Contexts tell us whether a character is a newline or a word constituent.
+   Word-constituent characters are those that satisfy iswalnum, plus '_'.
+   Each character has a single CTX_* value; bitmasks of CTX_* values denote
+   a particular character class.
+
+   A state also stores a context value, which is a bitmask of CTX_* values.
+   A state's context represents a set of characters that the state's
+   predecessors must match.  For example, a state whose context does not
+   include CTX_LETTER will never have transitions where the previous
+   character is a word constituent.  A state whose context is CTX_ANY
+   might have transitions from any character.  */
+
+enum
+  {
+    CTX_NONE = 1,
+    CTX_LETTER = 2,
+    CTX_NEWLINE = 4,
+    CTX_ANY = 7
+  };
+
+/* Sometimes characters can only be matched depending on the surrounding
+   context.  Such context decisions depend on what the previous character
+   was, and the value of the current (lookahead) character.  Context
+   dependent constraints are encoded as 9-bit integers.  Each bit that
+   is set indicates that the constraint succeeds in the corresponding
+   context.
+
+   bit 6-8  - valid contexts when next character is CTX_NEWLINE
+   bit 3-5  - valid contexts when next character is CTX_LETTER
+   bit 0-2  - valid contexts when next character is CTX_NONE
+
+   succeeds_in_context determines whether a given constraint
+   succeeds in a particular context.  Prev is a bitmask of possible
+   context values for the previous character, curr is the (single-bit)
+   context value for the lookahead character.  */
+static int
+newline_constraint (int constraint)
+{
+  return (constraint >> 6) & 7;
+}
+static int
+letter_constraint (int constraint)
+{
+  return (constraint >> 3) & 7;
+}
+static int
+other_constraint (int constraint)
+{
+  return constraint & 7;
+}
+
+static bool
+succeeds_in_context (int constraint, int prev, int curr)
+{
+  return !! (((curr & CTX_NONE      ? other_constraint (constraint) : 0) \
+              | (curr & CTX_LETTER  ? letter_constraint (constraint) : 0) \
+              | (curr & CTX_NEWLINE ? newline_constraint (constraint) : 0)) \
+             & prev);
+}
+
+/* The following describe what a constraint depends on.  */
+static bool
+prev_newline_dependent (int constraint)
+{
+  return ((constraint ^ constraint >> 2) & 0111) != 0;
+}
+static bool
+prev_letter_dependent (int constraint)
+{
+  return ((constraint ^ constraint >> 1) & 0111) != 0;
+}
+
+/* Tokens that match the empty string subject to some constraint actually
+   work by applying that constraint to determine what may follow them,
+   taking into account what has gone before.  The following values are
+   the constraints corresponding to the special tokens previously defined.  */
+enum
+  {
+    NO_CONSTRAINT = 0777,
+    BEGLINE_CONSTRAINT = 0444,
+    ENDLINE_CONSTRAINT = 0700,
+    BEGWORD_CONSTRAINT = 0050,
+    ENDWORD_CONSTRAINT = 0202,
+    LIMWORD_CONSTRAINT = 0252,
+    NOTLIMWORD_CONSTRAINT = 0525
+  };
+
+/* The regexp is parsed into an array of tokens in postfix form.  Some tokens
+   are operators and others are terminal symbols.  Most (but not all) of these
+   codes are returned by the lexical analyzer.  */
+
+typedef ptrdiff_t token;
+static token const TOKEN_MAX = PTRDIFF_MAX;
+
+/* States are indexed by state_num values.  These are normally
+   nonnegative but -1 is used as a special value.  */
+typedef ptrdiff_t state_num;
+
+/* Predefined token values.  */
+enum
+{
+  END = -1,                     /* END is a terminal symbol that matches the
+                                   end of input; any value of END or less in
+                                   the parse tree is such a symbol.  Accepting
+                                   states of the DFA are those that would have
+                                   a transition on END.  This is -1, not some
+                                   more-negative value, to tweak the speed of
+                                   comparisons to END.  */
+
+  /* Ordinary character values are terminal symbols that match themselves.  */
+
+  /* CSET must come last in the following list of special tokens.  Otherwise,
+     the list order matters only for performance.  Related special tokens
+     should have nearby values so that code like (t == ANYCHAR || t == MBCSET
+     || CSET <= t) can be done with a single machine-level comparison.  */
+
+  EMPTY = NOTCHAR,              /* EMPTY is a terminal symbol that matches
+                                   the empty string.  */
+
+  QMARK,                        /* QMARK is an operator of one argument that
+                                   matches zero or one occurrences of its
+                                   argument.  */
+
+  STAR,                         /* STAR is an operator of one argument that
+                                   matches the Kleene closure (zero or more
+                                   occurrences) of its argument.  */
+
+  PLUS,                         /* PLUS is an operator of one argument that
+                                   matches the positive closure (one or more
+                                   occurrences) of its argument.  */
+
+  REPMN,                        /* REPMN is a lexical token corresponding
+                                   to the {m,n} construct.  REPMN never
+                                   appears in the compiled token vector.  */
+
+  CAT,                          /* CAT is an operator of two arguments that
+                                   matches the concatenation of its
+                                   arguments.  CAT is never returned by the
+                                   lexical analyzer.  */
+
+  OR,                           /* OR is an operator of two arguments that
+                                   matches either of its arguments.  */
+
+  LPAREN,                       /* LPAREN never appears in the parse tree,
+                                   it is only a lexeme.  */
+
+  RPAREN,                       /* RPAREN never appears in the parse tree.  */
+
+#if defined(KMK_GREP) && defined(KBUILD_OS_WINDOWS)
+# define WCHAR DFA_WCHAR
+#endif
+  WCHAR,                        /* Only returned by lex.  wctok contains
+                                   the wide character representation.  */
+
+  ANYCHAR,                      /* ANYCHAR is a terminal symbol that matches
+                                   a valid multibyte (or single byte) character.
+                                   It is used only if MB_CUR_MAX > 1.  */
+
+  BEG,                          /* BEG is an initial symbol that matches the
+                                   beginning of input.  */
+
+  BEGLINE,                      /* BEGLINE is a terminal symbol that matches
+                                   the empty string at the beginning of a
+                                   line.  */
+
+  ENDLINE,                      /* ENDLINE is a terminal symbol that matches
+                                   the empty string at the end of a line.  */
+
+  BEGWORD,                      /* BEGWORD is a terminal symbol that matches
+                                   the empty string at the beginning of a
+                                   word.  */
+
+  ENDWORD,                      /* ENDWORD is a terminal symbol that matches
+                                   the empty string at the end of a word.  */
+
+  LIMWORD,                      /* LIMWORD is a terminal symbol that matches
+                                   the empty string at the beginning or the
+                                   end of a word.  */
+
+  NOTLIMWORD,                   /* NOTLIMWORD is a terminal symbol that
+                                   matches the empty string not at
+                                   the beginning or end of a word.  */
+
+  BACKREF,                      /* BACKREF is generated by \<digit>
+                                   or by any other construct that
+                                   is not completely handled.  If the scanner
+                                   detects a transition on backref, it returns
+                                   a kind of "semi-success" indicating that
+                                   the match will have to be verified with
+                                   a backtracking matcher.  */
+
+  MBCSET,                       /* MBCSET is similar to CSET, but for
+                                   multibyte characters.  */
+
+  CSET                          /* CSET and (and any value greater) is a
+                                   terminal symbol that matches any of a
+                                   class of characters.  */
+};
+
+
+/* States of the recognizer correspond to sets of positions in the parse
+   tree, together with the constraints under which they may be matched.
+   So a position is encoded as an index into the parse tree together with
+   a constraint.  */
+typedef struct
+{
+  idx_t index;			/* Index into the parse array.  */
+  unsigned int constraint;      /* Constraint for matching this position.  */
+} position;
+
+/* Sets of positions are stored as arrays.  */
+typedef struct
+{
+  position *elems;              /* Elements of this position set.  */
+  idx_t nelem;			/* Number of elements in this set.  */
+  idx_t alloc;			/* Number of elements allocated in ELEMS.  */
+} position_set;
+
+/* A state of the dfa consists of a set of positions, some flags,
+   and the token value of the lowest-numbered position of the state that
+   contains an END token.  */
+typedef struct
+{
+  size_t hash;                  /* Hash of the positions of this state.  */
+  position_set elems;           /* Positions this state could match.  */
+  unsigned char context;        /* Context from previous state.  */
+  unsigned short constraint;    /* Constraint for this state to accept.  */
+  position_set mbps;            /* Positions which can match multibyte
+                                   characters or the follows, e.g., period.
+                                   Used only if MB_CUR_MAX > 1.  */
+  state_num mb_trindex;         /* Index of this state in MB_TRANS, or
+                                   negative if the state does not have
+                                   ANYCHAR.  */
+} dfa_state;
+
+/* Maximum for any transition table count.  This should be at least 3,
+   for the initial state setup.  */
+enum { MAX_TRCOUNT = 1024 };
+
+/* A bracket operator.
+   e.g., [a-c], [[:alpha:]], etc.  */
+struct mb_char_classes
+{
+  ptrdiff_t cset;
+  bool invert;
+  wchar_t *chars;               /* Normal characters.  */
+  idx_t nchars;
+  idx_t nchars_alloc;
+};
+
+struct regex_syntax
+{
+  /* Syntax bits controlling the behavior of the lexical analyzer.  */
+  reg_syntax_t syntax_bits;
+  bool syntax_bits_set;
+
+  /* Flag for case-folding letters into sets.  */
+  bool case_fold;
+
+  /* True if ^ and $ match only the start and end of data, and do not match
+     end-of-line within data.  */
+  bool anchor;
+
+  /* End-of-line byte in data.  */
+  unsigned char eolbyte;
+
+  /* Cache of char-context values.  */
+  char sbit[NOTCHAR];
+
+  /* If never_trail[B], the byte B cannot be a non-initial byte in a
+     multibyte character.  */
+  bool never_trail[NOTCHAR];
+
+  /* Set of characters considered letters.  */
+  charclass letters;
+
+  /* Set of characters that are newline.  */
+  charclass newline;
+};
+
+/* Lexical analyzer.  All the dross that deals with the obnoxious
+   GNU Regex syntax bits is located here.  The poor, suffering
+   reader is referred to the GNU Regex documentation for the
+   meaning of the @#%!@#%^!@ syntax bits.  */
+struct lexer_state
+{
+  char const *ptr;	/* Pointer to next input character.  */
+  idx_t left;		/* Number of characters remaining.  */
+  token lasttok;	/* Previous token returned; initially END.  */
+  idx_t parens;		/* Count of outstanding left parens.  */
+  int minrep, maxrep;	/* Repeat counts for {m,n}.  */
+
+  /* Wide character representation of the current multibyte character,
+     or WEOF if there was an encoding error.  Used only if
+     MB_CUR_MAX > 1.  */
+  wint_t wctok;
+
+  /* The most recently analyzed multibyte bracket expression.  */
+  struct mb_char_classes brack;
+
+  /* We're separated from beginning or (, | only by zero-width characters.  */
+  bool laststart;
+};
+
+/* Recursive descent parser for regular expressions.  */
+
+struct parser_state
+{
+  token tok;               /* Lookahead token.  */
+  idx_t depth;		   /* Current depth of a hypothetical stack
+                              holding deferred productions.  This is
+                              used to determine the depth that will be
+                              required of the real stack later on in
+                              dfaanalyze.  */
+};
+
+/* A compiled regular expression.  */
+struct dfa
+{
+  /* Fields filled by the scanner.  */
+  charclass *charclasses;       /* Array of character sets for CSET tokens.  */
+  idx_t cindex;			/* Index for adding new charclasses.  */
+  idx_t calloc;			/* Number of charclasses allocated.  */
+  ptrdiff_t canychar;           /* Index of anychar class, or -1.  */
+
+  /* Scanner state */
+  struct lexer_state lex;
+
+  /* Parser state */
+  struct parser_state parse;
+
+  /* Fields filled by the parser.  */
+  token *tokens;                /* Postfix parse array.  */
+  idx_t tindex;			/* Index for adding new tokens.  */
+  idx_t talloc;			/* Number of tokens currently allocated.  */
+  idx_t depth;			/* Depth required of an evaluation stack
+                                   used for depth-first traversal of the
+                                   parse tree.  */
+  idx_t nleaves;		/* Number of non-EMPTY leaves
+                                   in the parse tree.  */
+  idx_t nregexps;		/* Count of parallel regexps being built
+                                   with dfaparse.  */
+  bool fast;			/* The DFA is fast.  */
+  bool epsilon;			/* Does a token match only the empty string?  */
+  token utf8_anychar_classes[9]; /* To lower ANYCHAR in UTF-8 locales.  */
+  mbstate_t mbs;		/* Multibyte conversion state.  */
+
+  /* The following are valid only if MB_CUR_MAX > 1.  */
+
+  /* The value of multibyte_prop[i] is defined by following rule.
+     if tokens[i] < NOTCHAR
+     bit 0 : tokens[i] is the first byte of a character, including
+     single-byte characters.
+     bit 1 : tokens[i] is the last byte of a character, including
+     single-byte characters.
+
+     e.g.
+     tokens
+     = 'single_byte_a', 'multi_byte_A', single_byte_b'
+     = 'sb_a', 'mb_A(1st byte)', 'mb_A(2nd byte)', 'mb_A(3rd byte)', 'sb_b'
+     multibyte_prop
+     = 3     , 1               ,  0              ,  2              , 3
+   */
+  char *multibyte_prop;
+
+  /* Fields filled by the superset.  */
+  struct dfa *superset;             /* Hint of the dfa.  */
+
+  /* Fields filled by the state builder.  */
+  dfa_state *states;            /* States of the dfa.  */
+  state_num sindex;             /* Index for adding new states.  */
+  idx_t salloc;			/* Number of states currently allocated.  */
+
+  /* Fields filled by the parse tree->NFA conversion.  */
+  position_set *follows;        /* Array of follow sets, indexed by position
+                                   index.  The follow of a position is the set
+                                   of positions containing characters that
+                                   could conceivably follow a character
+                                   matching the given position in a string
+                                   matching the regexp.  Allocated to the
+                                   maximum possible position index.  */
+  bool searchflag;		/* We are supposed to build a searching
+                                   as opposed to an exact matcher.  A searching
+                                   matcher finds the first and shortest string
+                                   matching a regexp anywhere in the buffer,
+                                   whereas an exact matcher finds the longest
+                                   string matching, but anchored to the
+                                   beginning of the buffer.  */
+
+  /* Fields filled by dfaanalyze.  */
+  int *constraints;             /* Array of union of accepting constraints
+                                   in the follow of a position.  */
+  int *separates;               /* Array of contexts on follow of a
+                                   position.  */
+
+  /* Fields filled by dfaexec.  */
+  state_num tralloc;            /* Number of transition tables that have
+                                   slots so far, not counting trans[-1] and
+                                   trans[-2].  */
+  int trcount;                  /* Number of transition tables that have
+                                   been built, other than for initial
+                                   states.  */
+  int min_trcount;              /* Number of initial states.  Equivalently,
+                                   the minimum state number for which trcount
+                                   counts transitions.  */
+  state_num **trans;            /* Transition tables for states that can
+                                   never accept.  If the transitions for a
+                                   state have not yet been computed, or the
+                                   state could possibly accept, its entry in
+                                   this table is NULL.  This points to two
+                                   past the start of the allocated array,
+                                   and trans[-1] and trans[-2] are always
+                                   NULL.  */
+  state_num **fails;            /* Transition tables after failing to accept
+                                   on a state that potentially could do so.
+                                   If trans[i] is non-null, fails[i] must
+                                   be null.  */
+  char *success;                /* Table of acceptance conditions used in
+                                   dfaexec and computed in build_state.  */
+  state_num *newlines;          /* Transitions on newlines.  The entry for a
+                                   newline in any transition table is always
+                                   -1 so we can count lines without wasting
+                                   too many cycles.  The transition for a
+                                   newline is stored separately and handled
+                                   as a special case.  Newline is also used
+                                   as a sentinel at the end of the buffer.  */
+  state_num initstate_notbol;   /* Initial state for CTX_LETTER and CTX_NONE
+                                   context in multibyte locales, in which we
+                                   do not distinguish between their contexts,
+                                   as not supported word.  */
+  position_set mb_follows;      /* Follow set added by ANYCHAR on demand.  */
+  state_num **mb_trans;         /* Transition tables for states with
+                                   ANYCHAR.  */
+  state_num mb_trcount;         /* Number of transition tables for states with
+                                   ANYCHAR that have actually been built.  */
+
+  /* Syntax configuration.  This is near the end so that dfacopysyntax
+     can memset up to here.  */
+  struct regex_syntax syntax;
+
+  /* Information derived from the locale.  This is at the end so that
+     a quick memset need not clear it specially.  */
+
+  /* dfaexec implementation.  */
+  char *(*dfaexec) (struct dfa *, char const *, char *,
+                    bool, ptrdiff_t *, bool *);
+
+  /* Other cached information derived from the locale.  */
+  struct localeinfo localeinfo;
+};
+
+/* User access to dfa internals.  */
+
+/* S could possibly be an accepting state of R.  */
+static bool
+accepting (state_num s, struct dfa const *r)
+{
+  return r->states[s].constraint != 0;
+}
+
+/* STATE accepts in the specified context.  */
+static bool
+accepts_in_context (int prev, int curr, state_num state, struct dfa const *dfa)
+{
+  return succeeds_in_context (dfa->states[state].constraint, prev, curr);
+}
+
+static void regexp (struct dfa *dfa);
+
+/* Store into *PWC the result of converting the leading bytes of the
+   multibyte buffer S of length N bytes, using D->localeinfo.sbctowc
+   and updating the conversion state in *D.  On conversion error,
+   convert just a single byte, to WEOF.  Return the number of bytes
+   converted.
+
+   This differs from mbrtowc (PWC, S, N, &D->mbs) as follows:
+
+   * PWC points to wint_t, not to wchar_t.
+   * The last arg is a dfa *D instead of merely a multibyte conversion
+     state D->mbs.
+   * N is idx_t not size_t, and must be at least 1.
+   * S[N - 1] must be a sentinel byte.
+   * Shift encodings are not supported.
+   * The return value is always in the range 1..N.
+   * D->mbs is always valid afterwards.
+   * *PWC is always set to something.  */
+static int
+mbs_to_wchar (wint_t *pwc, char const *s, idx_t n, struct dfa *d)
+{
+  unsigned char uc = s[0];
+  wint_t wc = d->localeinfo.sbctowc[uc];
+
+  if (wc == WEOF)
+    {
+      wchar_t wch;
+      size_t nbytes = mbrtowc (&wch, s, n, &d->mbs);
+      if (0 < nbytes && nbytes < (size_t) -2)
+        {
+          *pwc = wch;
+          return nbytes;
+        }
+      memset (&d->mbs, 0, sizeof d->mbs);
+    }
+
+  *pwc = wc;
+  return 1;
+}
+
+#ifdef DEBUG
+
+static void
+prtok (token t)
+{
+  if (t <= END)
+    fprintf (stderr, "END");
+  else if (0 <= t && t < NOTCHAR)
+    {
+      unsigned int ch = t;
+      fprintf (stderr, "0x%02x", ch);
+    }
+  else
+    {
+      char const *s;
+      switch (t)
+        {
+        case BEG:
+          s = "BEG";
+          break;
+        case EMPTY:
+          s = "EMPTY";
+          break;
+        case BACKREF:
+          s = "BACKREF";
+          break;
+        case BEGLINE:
+          s = "BEGLINE";
+          break;
+        case ENDLINE:
+          s = "ENDLINE";
+          break;
+        case BEGWORD:
+          s = "BEGWORD";
+          break;
+        case ENDWORD:
+          s = "ENDWORD";
+          break;
+        case LIMWORD:
+          s = "LIMWORD";
+          break;
+        case NOTLIMWORD:
+          s = "NOTLIMWORD";
+          break;
+        case QMARK:
+          s = "QMARK";
+          break;
+        case STAR:
+          s = "STAR";
+          break;
+        case PLUS:
+          s = "PLUS";
+          break;
+        case CAT:
+          s = "CAT";
+          break;
+        case OR:
+          s = "OR";
+          break;
+        case LPAREN:
+          s = "LPAREN";
+          break;
+        case RPAREN:
+          s = "RPAREN";
+          break;
+        case ANYCHAR:
+          s = "ANYCHAR";
+          break;
+        case MBCSET:
+          s = "MBCSET";
+          break;
+        default:
+          s = "CSET";
+          break;
+        }
+      fprintf (stderr, "%s", s);
+    }
+}
+#endif /* DEBUG */
+
+/* Stuff pertaining to charclasses.  */
+
+static bool
+tstbit (unsigned int b, charclass const *c)
+{
+  return c->w[b / CHARCLASS_WORD_BITS] >> b % CHARCLASS_WORD_BITS & 1;
+}
+
+static void
+setbit (unsigned int b, charclass *c)
+{
+  charclass_word one = 1;
+  c->w[b / CHARCLASS_WORD_BITS] |= one << b % CHARCLASS_WORD_BITS;
+}
+
+static void
+clrbit (unsigned int b, charclass *c)
+{
+  charclass_word one = 1;
+  c->w[b / CHARCLASS_WORD_BITS] &= ~(one << b % CHARCLASS_WORD_BITS);
+}
+
+static void
+zeroset (charclass *s)
+{
+  memset (s, 0, sizeof *s);
+}
+
+static void
+fillset (charclass *s)
+{
+  for (int i = 0; i < CHARCLASS_WORDS; i++)
+    s->w[i] = CHARCLASS_WORD_MASK;
+}
+
+static void
+notset (charclass *s)
+{
+  for (int i = 0; i < CHARCLASS_WORDS; ++i)
+    s->w[i] = CHARCLASS_WORD_MASK & ~s->w[i];
+}
+
+static bool
+equal (charclass const *s1, charclass const *s2)
+{
+  charclass_word w = 0;
+  for (int i = 0; i < CHARCLASS_WORDS; i++)
+    w |= s1->w[i] ^ s2->w[i];
+  return w == 0;
+}
+
+static bool
+emptyset (charclass const *s)
+{
+  charclass_word w = 0;
+  for (int i = 0; i < CHARCLASS_WORDS; i++)
+    w |= s->w[i];
+  return w == 0;
+}
+
+/* Ensure that the array addressed by PA holds at least I + 1 items.
+   Either return PA, or reallocate the array and return its new address.
+   Although PA may be null, the returned value is never null.
+
+   The array holds *NITEMS items, where 0 <= I <= *NITEMS; *NITEMS
+   is updated on reallocation.  If PA is null, *NITEMS must be zero.
+   Do not allocate more than NITEMS_MAX items total; -1 means no limit.
+   ITEM_SIZE is the size of one item; it must be positive.
+   Avoid O(N**2) behavior on arrays growing linearly.  */
+static void *
+maybe_realloc (void *pa, idx_t i, idx_t *nitems,
+               ptrdiff_t nitems_max, idx_t item_size)
+{
+  if (i < *nitems)
+    return pa;
+  return xpalloc (pa, nitems, 1, nitems_max, item_size);
+}
+
+/* In DFA D, find the index of charclass S, or allocate a new one.  */
+static idx_t
+charclass_index (struct dfa *d, charclass const *s)
+{
+  idx_t i;
+
+  for (i = 0; i < d->cindex; ++i)
+    if (equal (s, &d->charclasses[i]))
+      return i;
+  d->charclasses = maybe_realloc (d->charclasses, d->cindex, &d->calloc,
+                                  TOKEN_MAX - CSET, sizeof *d->charclasses);
+  ++d->cindex;
+  d->charclasses[i] = *s;
+  return i;
+}
+
+static bool
+unibyte_word_constituent (struct dfa const *dfa, unsigned char c)
+{
+  return dfa->localeinfo.sbctowc[c] != WEOF && (isalnum (c) || (c) == '_');
+}
+
+static int
+char_context (struct dfa const *dfa, unsigned char c)
+{
+  if (c == dfa->syntax.eolbyte && !dfa->syntax.anchor)
+    return CTX_NEWLINE;
+  if (unibyte_word_constituent (dfa, c))
+    return CTX_LETTER;
+  return CTX_NONE;
+}
+
+/* Set a bit in the charclass for the given wchar_t.  Do nothing if WC
+   is represented by a multi-byte sequence.  Even for MB_CUR_MAX == 1,
+   this may happen when folding case in weird Turkish locales where
+   dotless i/dotted I are not included in the chosen character set.
+   Return whether a bit was set in the charclass.  */
+static bool
+setbit_wc (wint_t wc, charclass *c)
+{
+  int b = wctob (wc);
+  if (b < 0)
+    return false;
+
+  setbit (b, c);
+  return true;
+}
+
+/* Set a bit for B and its case variants in the charclass C.
+   MB_CUR_MAX must be 1.  */
+static void
+setbit_case_fold_c (int b, charclass *c)
+{
+  int ub = toupper (b);
+  for (int i = 0; i < NOTCHAR; i++)
+    if (toupper (i) == ub)
+      setbit (i, c);
+}
+
+/* Fetch the next lexical input character from the pattern.  There
+   must at least one byte of pattern input.  Set DFA->lex.wctok to the
+   value of the character or to WEOF depending on whether the input is
+   a valid multibyte character (possibly of length 1).  Then return
+   the next input byte value, except return EOF if the input is a
+   multibyte character of length greater than 1.  */
+static int
+fetch_wc (struct dfa *dfa)
+{
+  int nbytes = mbs_to_wchar (&dfa->lex.wctok, dfa->lex.ptr, dfa->lex.left,
+                             dfa);
+  int c = nbytes == 1 ? to_uchar (dfa->lex.ptr[0]) : EOF;
+  dfa->lex.ptr += nbytes;
+  dfa->lex.left -= nbytes;
+  return c;
+}
+
+/* If there is no more input, report an error about unbalanced brackets.
+   Otherwise, behave as with fetch_wc (DFA).  */
+static int
+bracket_fetch_wc (struct dfa *dfa)
+{
+  if (! dfa->lex.left)
+    dfaerror (_("unbalanced ["));
+  return fetch_wc (dfa);
+}
+
+typedef int predicate (int);
+
+/* The following list maps the names of the Posix named character classes
+   to predicate functions that determine whether a given character is in
+   the class.  The leading [ has already been eaten by the lexical
+   analyzer.  */
+struct dfa_ctype
+{
+  const char *name;
+  predicate *func;
+  bool single_byte_only;
+};
+
+static const struct dfa_ctype prednames[] = {
+  {"alpha", isalpha, false},
+  {"upper", isupper, false},
+  {"lower", islower, false},
+  {"digit", isdigit, true},
+  {"xdigit", isxdigit, false},
+  {"space", isspace, false},
+  {"punct", ispunct, false},
+  {"alnum", isalnum, false},
+  {"print", isprint, false},
+  {"graph", isgraph, false},
+  {"cntrl", iscntrl, false},
+  {"blank", isblank, false},
+  {NULL, NULL, false}
+};
+
+static const struct dfa_ctype *_GL_ATTRIBUTE_PURE
+find_pred (const char *str)
+{
+  for (int i = 0; prednames[i].name; i++)
+    if (streq (str, prednames[i].name))
+      return &prednames[i];
+  return NULL;
+}
+
+/* Parse a bracket expression, which possibly includes multibyte
+   characters.  */
+static token
+parse_bracket_exp (struct dfa *dfa)
+{
+  /* This is a bracket expression that dfaexec is known to
+     process correctly.  */
+  bool known_bracket_exp = true;
+
+  /* Used to warn about [:space:].
+     Bit 0 = first character is a colon.
+     Bit 1 = last character is a colon.
+     Bit 2 = includes any other character but a colon.
+     Bit 3 = includes ranges, char/equiv classes or collation elements.  */
+  int colon_warning_state;
+
+  dfa->lex.brack.nchars = 0;
+  charclass ccl;
+  zeroset (&ccl);
+  int c = bracket_fetch_wc (dfa);
+  bool invert = c == '^';
+  if (invert)
+    {
+      c = bracket_fetch_wc (dfa);
+      known_bracket_exp = dfa->localeinfo.simple;
+    }
+  wint_t wc = dfa->lex.wctok;
+  int c1;
+  wint_t wc1;
+  colon_warning_state = (c == ':');
+  do
+    {
+      c1 = NOTCHAR;	/* Mark c1 as not initialized.  */
+      colon_warning_state &= ~2;
+
+      /* Note that if we're looking at some other [:...:] construct,
+         we just treat it as a bunch of ordinary characters.  We can do
+         this because we assume regex has checked for syntax errors before
+         dfa is ever called.  */
+      if (c == '[')
+        {
+          c1 = bracket_fetch_wc (dfa);
+          wc1 = dfa->lex.wctok;
+
+          if ((c1 == ':' && (dfa->syntax.syntax_bits & RE_CHAR_CLASSES))
+              || c1 == '.' || c1 == '=')
+            {
+              enum { MAX_BRACKET_STRING_LEN = 32 };
+              char str[MAX_BRACKET_STRING_LEN + 1];
+              int len = 0;
+              for (;;)
+                {
+                  c = bracket_fetch_wc (dfa);
+                  if (dfa->lex.left == 0
+                      || (c == c1 && dfa->lex.ptr[0] == ']'))
+                    break;
+                  if (len < MAX_BRACKET_STRING_LEN)
+                    str[len++] = c;
+                  else
+                    /* This is in any case an invalid class name.  */
+                    str[0] = '\0';
+                }
+              str[len] = '\0';
+
+              /* Fetch bracket.  */
+              c = bracket_fetch_wc (dfa);
+              wc = dfa->lex.wctok;
+              if (c1 == ':')
+                /* Build character class.  POSIX allows character
+                   classes to match multicharacter collating elements,
+                   but the regex code does not support that, so do not
+                   worry about that possibility.  */
+                {
+                  char const *class
+                    = (dfa->syntax.case_fold && (streq (str, "upper")
+                                                 || streq (str, "lower"))
+                       ? "alpha" : str);
+                  const struct dfa_ctype *pred = find_pred (class);
+                  if (!pred)
+                    dfaerror (_("invalid character class"));
+
+                  if (dfa->localeinfo.multibyte && !pred->single_byte_only)
+                    known_bracket_exp = false;
+                  else
+                    for (int c2 = 0; c2 < NOTCHAR; ++c2)
+                      if (pred->func (c2))
+                        setbit (c2, &ccl);
+                }
+              else
+                known_bracket_exp = false;
+
+              colon_warning_state |= 8;
+
+              /* Fetch new lookahead character.  */
+              c1 = bracket_fetch_wc (dfa);
+              wc1 = dfa->lex.wctok;
+              continue;
+            }
+
+          /* We treat '[' as a normal character here.  c/c1/wc/wc1
+             are already set up.  */
+        }
+
+      if (c == '\\'
+          && (dfa->syntax.syntax_bits & RE_BACKSLASH_ESCAPE_IN_LISTS))
+        {
+          c = bracket_fetch_wc (dfa);
+          wc = dfa->lex.wctok;
+        }
+
+      if (c1 == NOTCHAR)
+        {
+          c1 = bracket_fetch_wc (dfa);
+          wc1 = dfa->lex.wctok;
+        }
+
+      if (c1 == '-')
+        /* build range characters.  */
+        {
+          int c2 = bracket_fetch_wc (dfa);
+          wint_t wc2 = dfa->lex.wctok;
+
+          /* A bracket expression like [a-[.aa.]] matches an unknown set.
+             Treat it like [-a[.aa.]] while parsing it, and
+             remember that the set is unknown.  */
+          if (c2 == '[' && dfa->lex.ptr[0] == '.')
+            {
+              known_bracket_exp = false;
+              c2 = ']';
+            }
+
+          if (c2 == ']')
+            {
+              /* In the case [x-], the - is an ordinary hyphen,
+                 which is left in c1, the lookahead character.  */
+              dfa->lex.ptr--;
+              dfa->lex.left++;
+            }
+          else
+            {
+              if (c2 == '\\' && (dfa->syntax.syntax_bits
+                                 & RE_BACKSLASH_ESCAPE_IN_LISTS))
+                {
+                  c2 = bracket_fetch_wc (dfa);
+                  wc2 = dfa->lex.wctok;
+                }
+
+              colon_warning_state |= 8;
+              c1 = bracket_fetch_wc (dfa);
+              wc1 = dfa->lex.wctok;
+
+              /* Treat [x-y] as a range if x != y.  */
+              if (wc != wc2 || wc == WEOF)
+                {
+                  if (dfa->localeinfo.simple
+                      || (isasciidigit (c) & isasciidigit (c2)))
+                    {
+                      for (int ci = c; ci <= c2; ci++)
+                        if (dfa->syntax.case_fold && isalpha (ci))
+                          setbit_case_fold_c (ci, &ccl);
+                        else
+                          setbit (ci, &ccl);
+                    }
+                  else
+                    known_bracket_exp = false;
+
+                  continue;
+                }
+            }
+        }
+
+      colon_warning_state |= (c == ':') ? 2 : 4;
+
+      if (!dfa->localeinfo.multibyte)
+        {
+          if (dfa->syntax.case_fold && isalpha (c))
+            setbit_case_fold_c (c, &ccl);
+          else
+            setbit (c, &ccl);
+          continue;
+        }
+
+      if (wc == WEOF)
+        known_bracket_exp = false;
+      else
+        {
+          wchar_t folded[CASE_FOLDED_BUFSIZE + 1];
+          int n = (dfa->syntax.case_fold
+                   ? case_folded_counterparts (wc, folded + 1) + 1
+                   : 1);
+          folded[0] = wc;
+          for (int i = 0; i < n; i++)
+            if (!setbit_wc (folded[i], &ccl))
+              {
+                dfa->lex.brack.chars
+                  = maybe_realloc (dfa->lex.brack.chars, dfa->lex.brack.nchars,
+                                   &dfa->lex.brack.nchars_alloc, -1,
+                                   sizeof *dfa->lex.brack.chars);
+                dfa->lex.brack.chars[dfa->lex.brack.nchars++] = folded[i];
+              }
+        }
+    }
+  while ((wc = wc1, (c = c1) != ']'));
+
+  if (colon_warning_state == 7)
+    dfawarn (_("character class syntax is [[:space:]], not [:space:]"));
+
+  if (! known_bracket_exp)
+    return BACKREF;
+
+  if (dfa->localeinfo.multibyte && (invert || dfa->lex.brack.nchars != 0))
+    {
+      dfa->lex.brack.invert = invert;
+      dfa->lex.brack.cset = emptyset (&ccl) ? -1 : charclass_index (dfa, &ccl);
+      return MBCSET;
+    }
+
+  if (invert)
+    {
+      notset (&ccl);
+      if (dfa->syntax.syntax_bits & RE_HAT_LISTS_NOT_NEWLINE)
+        clrbit ('\n', &ccl);
+    }
+
+  return CSET + charclass_index (dfa, &ccl);
+}
+
+struct lexptr
+{
+  char const *ptr;
+  idx_t left;
+};
+
+static void
+push_lex_state (struct dfa *dfa, struct lexptr *ls, char const *s)
+{
+  ls->ptr = dfa->lex.ptr;
+  ls->left = dfa->lex.left;
+  dfa->lex.ptr = s;
+  dfa->lex.left = strlen (s);
+}
+
+static void
+pop_lex_state (struct dfa *dfa, struct lexptr const *ls)
+{
+  dfa->lex.ptr = ls->ptr;
+  dfa->lex.left = ls->left;
+}
+
+static token
+lex (struct dfa *dfa)
+{
+  bool backslash = false;
+
+  /* Basic plan: We fetch a character.  If it's a backslash,
+     we set the backslash flag and go through the loop again.
+     On the plus side, this avoids having a duplicate of the
+     main switch inside the backslash case.  On the minus side,
+     it means that just about every case begins with
+     "if (backslash) ...".  */
+  for (int i = 0; i < 2; ++i)
+    {
+      if (! dfa->lex.left)
+        return dfa->lex.lasttok = END;
+      int c = fetch_wc (dfa);
+
+      switch (c)
+        {
+        case '\\':
+          if (backslash)
+            goto normal_char;
+          if (dfa->lex.left == 0)
+            dfaerror (_("unfinished \\ escape"));
+          backslash = true;
+          break;
+
+        case '^':
+          if (backslash)
+            goto normal_char;
+          if (dfa->syntax.syntax_bits & RE_CONTEXT_INDEP_ANCHORS
+              || dfa->lex.lasttok == END || dfa->lex.lasttok == LPAREN
+              || dfa->lex.lasttok == OR)
+            return dfa->lex.lasttok = BEGLINE;
+          goto normal_char;
+
+        case '$':
+          if (backslash)
+            goto normal_char;
+          if (dfa->syntax.syntax_bits & RE_CONTEXT_INDEP_ANCHORS
+              || dfa->lex.left == 0
+              || ((dfa->lex.left
+                   > !(dfa->syntax.syntax_bits & RE_NO_BK_PARENS))
+                  && (dfa->lex.ptr[!(dfa->syntax.syntax_bits & RE_NO_BK_PARENS)
+                                   & (dfa->lex.ptr[0] == '\\')]
+                      == ')'))
+              || ((dfa->lex.left
+                   > !(dfa->syntax.syntax_bits & RE_NO_BK_VBAR))
+                  && (dfa->lex.ptr[!(dfa->syntax.syntax_bits & RE_NO_BK_VBAR)
+                                   & (dfa->lex.ptr[0] == '\\')]
+                      == '|'))
+              || ((dfa->syntax.syntax_bits & RE_NEWLINE_ALT)
+                  && dfa->lex.left > 0 && dfa->lex.ptr[0] == '\n'))
+            return dfa->lex.lasttok = ENDLINE;
+          goto normal_char;
+
+        case '1':
+        case '2':
+        case '3':
+        case '4':
+        case '5':
+        case '6':
+        case '7':
+        case '8':
+        case '9':
+          if (backslash && !(dfa->syntax.syntax_bits & RE_NO_BK_REFS))
+            {
+              dfa->lex.laststart = false;
+              return dfa->lex.lasttok = BACKREF;
+            }
+          goto normal_char;
+
+        case '`':
+          if (backslash && !(dfa->syntax.syntax_bits & RE_NO_GNU_OPS))
+            {
+              /* FIXME: should be beginning of string */
+              return dfa->lex.lasttok = BEGLINE;
+            }
+          goto normal_char;
+
+        case '\'':
+          if (backslash && !(dfa->syntax.syntax_bits & RE_NO_GNU_OPS))
+            {
+              /* FIXME: should be end of string */
+              return dfa->lex.lasttok = ENDLINE;
+            }
+          goto normal_char;
+
+        case '<':
+          if (backslash && !(dfa->syntax.syntax_bits & RE_NO_GNU_OPS))
+            return dfa->lex.lasttok = BEGWORD;
+          goto normal_char;
+
+        case '>':
+          if (backslash && !(dfa->syntax.syntax_bits & RE_NO_GNU_OPS))
+            return dfa->lex.lasttok = ENDWORD;
+          goto normal_char;
+
+        case 'b':
+          if (backslash && !(dfa->syntax.syntax_bits & RE_NO_GNU_OPS))
+            return dfa->lex.lasttok = LIMWORD;
+          goto normal_char;
+
+        case 'B':
+          if (backslash && !(dfa->syntax.syntax_bits & RE_NO_GNU_OPS))
+            return dfa->lex.lasttok = NOTLIMWORD;
+          goto normal_char;
+
+        case '?':
+          if (dfa->syntax.syntax_bits & RE_LIMITED_OPS)
+            goto normal_char;
+          if (backslash != ((dfa->syntax.syntax_bits & RE_BK_PLUS_QM) != 0))
+            goto normal_char;
+          if (!(dfa->syntax.syntax_bits & RE_CONTEXT_INDEP_OPS)
+              && dfa->lex.laststart)
+            goto normal_char;
+          return dfa->lex.lasttok = QMARK;
+
+        case '*':
+          if (backslash)
+            goto normal_char;
+          if (!(dfa->syntax.syntax_bits & RE_CONTEXT_INDEP_OPS)
+              && dfa->lex.laststart)
+            goto normal_char;
+          return dfa->lex.lasttok = STAR;
+
+        case '+':
+          if (dfa->syntax.syntax_bits & RE_LIMITED_OPS)
+            goto normal_char;
+          if (backslash != ((dfa->syntax.syntax_bits & RE_BK_PLUS_QM) != 0))
+            goto normal_char;
+          if (!(dfa->syntax.syntax_bits & RE_CONTEXT_INDEP_OPS)
+              && dfa->lex.laststart)
+            goto normal_char;
+          return dfa->lex.lasttok = PLUS;
+
+        case '{':
+          if (!(dfa->syntax.syntax_bits & RE_INTERVALS))
+            goto normal_char;
+          if (backslash != ((dfa->syntax.syntax_bits & RE_NO_BK_BRACES) == 0))
+            goto normal_char;
+          if (!(dfa->syntax.syntax_bits & RE_CONTEXT_INDEP_OPS)
+              && dfa->lex.laststart)
+            goto normal_char;
+
+          /* Cases:
+             {M} - exact count
+             {M,} - minimum count, maximum is infinity
+             {,N} - 0 through N
+             {,} - 0 to infinity (same as '*')
+             {M,N} - M through N */
+          {
+            char const *p = dfa->lex.ptr;
+            char const *lim = p + dfa->lex.left;
+            dfa->lex.minrep = dfa->lex.maxrep = -1;
+            for (; p != lim && isasciidigit (*p); p++)
+              dfa->lex.minrep = (dfa->lex.minrep < 0
+                                 ? *p - '0'
+                                 : MIN (RE_DUP_MAX + 1,
+                                        dfa->lex.minrep * 10 + *p - '0'));
+            if (p != lim)
+              {
+                if (*p != ',')
+                  dfa->lex.maxrep = dfa->lex.minrep;
+                else
+                  {
+                    if (dfa->lex.minrep < 0)
+                      dfa->lex.minrep = 0;
+                    while (++p != lim && isasciidigit (*p))
+                      dfa->lex.maxrep
+                        = (dfa->lex.maxrep < 0
+                           ? *p - '0'
+                           : MIN (RE_DUP_MAX + 1,
+                                  dfa->lex.maxrep * 10 + *p - '0'));
+                  }
+              }
+            if (! ((! backslash || (p != lim && *p++ == '\\'))
+                   && p != lim && *p++ == '}'
+                   && 0 <= dfa->lex.minrep
+                   && (dfa->lex.maxrep < 0
+                       || dfa->lex.minrep <= dfa->lex.maxrep)))
+              {
+                if (dfa->syntax.syntax_bits & RE_INVALID_INTERVAL_ORD)
+                  goto normal_char;
+                dfaerror (_("invalid content of \\{\\}"));
+              }
+            if (RE_DUP_MAX < dfa->lex.maxrep)
+              dfaerror (_("regular expression too big"));
+            dfa->lex.ptr = p;
+            dfa->lex.left = lim - p;
+          }
+          dfa->lex.laststart = false;
+          return dfa->lex.lasttok = REPMN;
+
+        case '|':
+          if (dfa->syntax.syntax_bits & RE_LIMITED_OPS)
+            goto normal_char;
+          if (backslash != ((dfa->syntax.syntax_bits & RE_NO_BK_VBAR) == 0))
+            goto normal_char;
+          dfa->lex.laststart = true;
+          return dfa->lex.lasttok = OR;
+
+        case '\n':
+          if (dfa->syntax.syntax_bits & RE_LIMITED_OPS
+              || backslash || !(dfa->syntax.syntax_bits & RE_NEWLINE_ALT))
+            goto normal_char;
+          dfa->lex.laststart = true;
+          return dfa->lex.lasttok = OR;
+
+        case '(':
+          if (backslash != ((dfa->syntax.syntax_bits & RE_NO_BK_PARENS) == 0))
+            goto normal_char;
+          dfa->lex.parens++;
+          dfa->lex.laststart = true;
+          return dfa->lex.lasttok = LPAREN;
+
+        case ')':
+          if (backslash != ((dfa->syntax.syntax_bits & RE_NO_BK_PARENS) == 0))
+            goto normal_char;
+          if (dfa->lex.parens == 0
+              && dfa->syntax.syntax_bits & RE_UNMATCHED_RIGHT_PAREN_ORD)
+            goto normal_char;
+          dfa->lex.parens--;
+          dfa->lex.laststart = false;
+          return dfa->lex.lasttok = RPAREN;
+
+        case '.':
+          if (backslash)
+            goto normal_char;
+          if (dfa->canychar < 0)
+            {
+              charclass ccl;
+              fillset (&ccl);
+              if (!(dfa->syntax.syntax_bits & RE_DOT_NEWLINE))
+                clrbit ('\n', &ccl);
+              if (dfa->syntax.syntax_bits & RE_DOT_NOT_NULL)
+                clrbit ('\0', &ccl);
+              if (dfa->localeinfo.multibyte)
+                for (int c2 = 0; c2 < NOTCHAR; c2++)
+                  if (dfa->localeinfo.sbctowc[c2] == WEOF)
+                    clrbit (c2, &ccl);
+              dfa->canychar = charclass_index (dfa, &ccl);
+            }
+          dfa->lex.laststart = false;
+          return dfa->lex.lasttok = (dfa->localeinfo.multibyte
+                                     ? ANYCHAR
+                                     : CSET + dfa->canychar);
+
+        case 's':
+        case 'S':
+          if (!backslash || (dfa->syntax.syntax_bits & RE_NO_GNU_OPS))
+            goto normal_char;
+          if (!dfa->localeinfo.multibyte)
+            {
+              charclass ccl;
+              zeroset (&ccl);
+              for (int c2 = 0; c2 < NOTCHAR; ++c2)
+                if (isspace (c2))
+                  setbit (c2, &ccl);
+              if (c == 'S')
+                notset (&ccl);
+              dfa->lex.laststart = false;
+              return dfa->lex.lasttok = CSET + charclass_index (dfa, &ccl);
+            }
+
+          /* FIXME: see if optimizing this, as is done with ANYCHAR and
+             add_utf8_anychar, makes sense.  */
+
+          /* \s and \S are documented to be equivalent to [[:space:]] and
+             [^[:space:]] respectively, so tell the lexer to process those
+             strings, each minus its "already processed" '['.  */
+          {
+            struct lexptr ls;
+            push_lex_state (dfa, &ls, &"^[:space:]]"[c == 's']);
+            dfa->lex.lasttok = parse_bracket_exp (dfa);
+            pop_lex_state (dfa, &ls);
+          }
+
+          dfa->lex.laststart = false;
+          return dfa->lex.lasttok;
+
+        case 'w':
+        case 'W':
+          if (!backslash || (dfa->syntax.syntax_bits & RE_NO_GNU_OPS))
+            goto normal_char;
+
+          if (!dfa->localeinfo.multibyte)
+            {
+              charclass ccl;
+              zeroset (&ccl);
+              for (int c2 = 0; c2 < NOTCHAR; ++c2)
+                if (dfa->syntax.sbit[c2] == CTX_LETTER)
+                  setbit (c2, &ccl);
+              if (c == 'W')
+                notset (&ccl);
+              dfa->lex.laststart = false;
+              return dfa->lex.lasttok = CSET + charclass_index (dfa, &ccl);
+            }
+
+          /* FIXME: see if optimizing this, as is done with ANYCHAR and
+             add_utf8_anychar, makes sense.  */
+
+          /* \w and \W are documented to be equivalent to [_[:alnum:]] and
+             [^_[:alnum:]] respectively, so tell the lexer to process those
+             strings, each minus its "already processed" '['.  */
+          {
+            struct lexptr ls;
+            push_lex_state (dfa, &ls, &"^_[:alnum:]]"[c == 'w']);
+            dfa->lex.lasttok = parse_bracket_exp (dfa);
+            pop_lex_state (dfa, &ls);
+          }
+
+          dfa->lex.laststart = false;
+          return dfa->lex.lasttok;
+
+        case '[':
+          if (backslash)
+            goto normal_char;
+          dfa->lex.laststart = false;
+          return dfa->lex.lasttok = parse_bracket_exp (dfa);
+
+        default:
+        normal_char:
+          dfa->lex.laststart = false;
+          /* For multibyte character sets, folding is done in atom.  Always
+             return WCHAR.  */
+          if (dfa->localeinfo.multibyte)
+            return dfa->lex.lasttok = WCHAR;
+
+          if (dfa->syntax.case_fold && isalpha (c))
+            {
+              charclass ccl;
+              zeroset (&ccl);
+              setbit_case_fold_c (c, &ccl);
+              return dfa->lex.lasttok = CSET + charclass_index (dfa, &ccl);
+            }
+
+          return dfa->lex.lasttok = c;
+        }
+    }
+
+  /* The above loop should consume at most a backslash
+     and some other character.  */
+  abort ();
+  return END;                   /* keeps pedantic compilers happy.  */
+}
+
+static void
+addtok_mb (struct dfa *dfa, token t, char mbprop)
+{
+  if (dfa->talloc == dfa->tindex)
+    {
+      dfa->tokens = xpalloc (dfa->tokens, &dfa->talloc, 1, -1,
+                             sizeof *dfa->tokens);
+      if (dfa->localeinfo.multibyte)
+        dfa->multibyte_prop = xreallocarray (dfa->multibyte_prop, dfa->talloc,
+                                             sizeof *dfa->multibyte_prop);
+    }
+  if (dfa->localeinfo.multibyte)
+    dfa->multibyte_prop[dfa->tindex] = mbprop;
+  dfa->tokens[dfa->tindex++] = t;
+
+  switch (t)
+    {
+    case QMARK:
+    case STAR:
+    case PLUS:
+      break;
+
+    case CAT:
+    case OR:
+      dfa->parse.depth--;
+      break;
+
+    case EMPTY:
+      dfa->epsilon = true;
+      goto increment_depth;
+
+    case BACKREF:
+      dfa->fast = false;
+      goto increment_nleaves;
+
+    case BEGLINE:
+    case ENDLINE:
+    case BEGWORD:
+    case ENDWORD:
+    case LIMWORD:
+    case NOTLIMWORD:
+      dfa->epsilon = true;
+      FALLTHROUGH;
+    default:
+    increment_nleaves:
+      dfa->nleaves++;
+    increment_depth:
+      dfa->parse.depth++;
+      if (dfa->depth < dfa->parse.depth)
+        dfa->depth = dfa->parse.depth;
+      break;
+    }
+}
+
+static void addtok_wc (struct dfa *dfa, wint_t wc);
+
+/* Add the given token to the parse tree, maintaining the depth count and
+   updating the maximum depth if necessary.  */
+static void
+addtok (struct dfa *dfa, token t)
+{
+  if (dfa->localeinfo.multibyte && t == MBCSET)
+    {
+      bool need_or = false;
+
+      /* Extract wide characters into alternations for better performance.
+         This does not require UTF-8.  */
+      for (idx_t i = 0; i < dfa->lex.brack.nchars; i++)
+        {
+          addtok_wc (dfa, dfa->lex.brack.chars[i]);
+          if (need_or)
+            addtok (dfa, OR);
+          need_or = true;
+        }
+      dfa->lex.brack.nchars = 0;
+
+      /* Wide characters have been handled above, so it is possible
+         that the set is empty now.  Do nothing in that case.  */
+      if (dfa->lex.brack.cset != -1)
+        {
+          addtok (dfa, CSET + dfa->lex.brack.cset);
+          if (need_or)
+            addtok (dfa, OR);
+        }
+    }
+  else
+    {
+      addtok_mb (dfa, t, 3);
+    }
+}
+
+/* We treat a multibyte character as a single atom, so that DFA
+   can treat a multibyte character as a single expression.
+
+   e.g., we construct the following tree from "<mb1><mb2>".
+   <mb1(1st-byte)><mb1(2nd-byte)><CAT><mb1(3rd-byte)><CAT>
+   <mb2(1st-byte)><mb2(2nd-byte)><CAT><mb2(3rd-byte)><CAT><CAT> */
+static void
+addtok_wc (struct dfa *dfa, wint_t wc)
+{
+  unsigned char buf[MB_LEN_MAX];
+  mbstate_t s = { 0 };
+  size_t stored_bytes = wcrtomb ((char *) buf, wc, &s);
+  int buflen;
+
+  if (stored_bytes != (size_t) -1)
+    buflen = stored_bytes;
+  else
+    {
+      /* This is merely stop-gap.  buf[0] is undefined, yet skipping
+         the addtok_mb call altogether can corrupt the heap.  */
+      buflen = 1;
+      buf[0] = 0;
+    }
+
+  addtok_mb (dfa, buf[0], buflen == 1 ? 3 : 1);
+  for (int i = 1; i < buflen; i++)
+    {
+      addtok_mb (dfa, buf[i], i == buflen - 1 ? 2 : 0);
+      addtok (dfa, CAT);
+    }
+}
+
+static void
+add_utf8_anychar (struct dfa *dfa)
+{
+  /* Since the Unicode Standard Version 4.0.0 (2003), a well-formed
+     UTF-8 byte sequence has been defined as follows:
+
+     ([\x00-\x7f]
+     |[\xc2-\xdf][\x80-\xbf]
+     |[\xe0][\xa0-\xbf][\x80-\xbf]
+     |[\xe1-\xec\xee-\xef][\x80-\xbf][\x80-\xbf]
+     |[\xed][\x80-\x9f][\x80-\xbf]
+     |[\xf0][\x90-\xbf][\x80-\xbf][\x80-\xbf])
+     |[\xf1-\xf3][\x80-\xbf][\x80-\xbf][\x80-\xbf]
+     |[\xf4][\x80-\x8f][\x80-\xbf][\x80-\xbf])
+
+     which I'll write more concisely "A|BC|DEC|FCC|GHC|IJCC|KCCC|LMCC",
+     where A = [\x00-\x7f], B = [\xc2-\xdf], C = [\x80-\xbf],
+     D = [\xe0], E = [\xa0-\xbf], F = [\xe1-\xec\xee-\xef], G = [\xed],
+     H = [\x80-\x9f], I = [\xf0],
+     J = [\x90-\xbf], K = [\xf1-\xf3], L = [\xf4], M = [\x80-\x8f].
+
+     This can be refactored to "A|(B|DE|GH|(F|IJ|LM|KC)C)C".  */
+
+  /* Mnemonics for classes containing two or more bytes.  */
+  enum { A, B, C, E, F, H, J, K, M };
+
+  /* Mnemonics for single-byte tokens.  */
+  enum { D_token = 0xe0, G_token = 0xed, I_token = 0xf0, L_token = 0xf4 };
+
+  static charclass const utf8_classes[] = {
+    /* A. 00-7f: 1-byte sequence.  */
+    CHARCLASS_INIT (0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0, 0, 0, 0),
+
+    /* B. c2-df: 1st byte of a 2-byte sequence.  */
+    CHARCLASS_INIT (0, 0, 0, 0, 0, 0, 0xfffffffc, 0),
+
+    /* C. 80-bf: non-leading bytes.  */
+    CHARCLASS_INIT (0, 0, 0, 0, 0xffffffff, 0xffffffff, 0, 0),
+
+    /* D. e0 (just a token).  */
+
+    /* E. a0-bf: 2nd byte of a "DEC" sequence.  */
+    CHARCLASS_INIT (0, 0, 0, 0, 0, 0xffffffff, 0, 0),
+
+    /* F. e1-ec + ee-ef: 1st byte of an "FCC" sequence.  */
+    CHARCLASS_INIT (0, 0, 0, 0, 0, 0, 0, 0xdffe),
+
+    /* G. ed (just a token).  */
+
+    /* H. 80-9f: 2nd byte of a "GHC" sequence.  */
+    CHARCLASS_INIT (0, 0, 0, 0, 0xffff, 0, 0, 0),
+
+    /* I. f0 (just a token).  */
+
+    /* J. 90-bf: 2nd byte of an "IJCC" sequence.  */
+    CHARCLASS_INIT (0, 0, 0, 0, 0xffff0000, 0xffffffff, 0, 0),
+
+    /* K. f1-f3: 1st byte of a "KCCC" sequence.  */
+    CHARCLASS_INIT (0, 0, 0, 0, 0, 0, 0, 0xe0000),
+
+    /* L. f4 (just a token).  */
+
+    /* M. 80-8f: 2nd byte of a "LMCC" sequence.  */
+    CHARCLASS_INIT (0, 0, 0, 0, 0xff, 0, 0, 0),
+  };
+
+  /* Define the character classes that are needed below.  */
+  if (dfa->utf8_anychar_classes[0] == 0)
+    {
+      charclass c = utf8_classes[0];
+      if (! (dfa->syntax.syntax_bits & RE_DOT_NEWLINE))
+        clrbit ('\n', &c);
+      if (dfa->syntax.syntax_bits & RE_DOT_NOT_NULL)
+        clrbit ('\0', &c);
+      dfa->utf8_anychar_classes[0] = CSET + charclass_index (dfa, &c);
+
+      for (int i = 1; i < sizeof utf8_classes / sizeof *utf8_classes; i++)
+        dfa->utf8_anychar_classes[i]
+          = CSET + charclass_index (dfa, &utf8_classes[i]);
+    }
+
+  /* Implement the "A|(B|DE|GH|(F|IJ|LM|KC)C)C" pattern mentioned above.
+     The token buffer is in reverse Polish order, so we get
+     "A B D E CAT OR G H CAT OR F I J CAT OR L M CAT OR K
+      C CAT OR C CAT OR C CAT OR".  */
+  addtok (dfa, dfa->utf8_anychar_classes[A]);
+  addtok (dfa, dfa->utf8_anychar_classes[B]);
+  addtok (dfa, D_token);
+  addtok (dfa, dfa->utf8_anychar_classes[E]);
+  addtok (dfa, CAT);
+  addtok (dfa, OR);
+  addtok (dfa, G_token);
+  addtok (dfa, dfa->utf8_anychar_classes[H]);
+  addtok (dfa, CAT);
+  addtok (dfa, OR);
+  addtok (dfa, dfa->utf8_anychar_classes[F]);
+  addtok (dfa, I_token);
+  addtok (dfa, dfa->utf8_anychar_classes[J]);
+  addtok (dfa, CAT);
+  addtok (dfa, OR);
+  addtok (dfa, L_token);
+  addtok (dfa, dfa->utf8_anychar_classes[M]);
+  addtok (dfa, CAT);
+  addtok (dfa, OR);
+  addtok (dfa, dfa->utf8_anychar_classes[K]);
+  for (int i = 0; i < 3; i++)
+    {
+      addtok (dfa, dfa->utf8_anychar_classes[C]);
+      addtok (dfa, CAT);
+      addtok (dfa, OR);
+    }
+}
+
+/* The grammar understood by the parser is as follows.
+
+   regexp:
+     regexp OR branch
+     branch
+
+   branch:
+     branch closure
+     closure
+
+   closure:
+     closure QMARK
+     closure STAR
+     closure PLUS
+     closure REPMN
+     atom
+
+   atom:
+     <normal character>
+     <multibyte character>
+     ANYCHAR
+     MBCSET
+     CSET
+     BACKREF
+     BEGLINE
+     ENDLINE
+     BEGWORD
+     ENDWORD
+     LIMWORD
+     NOTLIMWORD
+     LPAREN regexp RPAREN
+     <empty>
+
+   The parser builds a parse tree in postfix form in an array of tokens.  */
+
+static void
+atom (struct dfa *dfa)
+{
+  if ((0 <= dfa->parse.tok && dfa->parse.tok < NOTCHAR)
+      || dfa->parse.tok >= CSET
+      || dfa->parse.tok == BEG || dfa->parse.tok == BACKREF
+      || dfa->parse.tok == BEGLINE || dfa->parse.tok == ENDLINE
+      || dfa->parse.tok == BEGWORD || dfa->parse.tok == ENDWORD
+      || dfa->parse.tok == LIMWORD || dfa->parse.tok == NOTLIMWORD
+      || dfa->parse.tok == ANYCHAR || dfa->parse.tok == MBCSET)
+    {
+      if (dfa->parse.tok == ANYCHAR && dfa->localeinfo.using_utf8)
+        {
+          /* For UTF-8 expand the period to a series of CSETs that define a
+             valid UTF-8 character.  This avoids using the slow multibyte
+             path.  I'm pretty sure it would be both profitable and correct to
+             do it for any encoding; however, the optimization must be done
+             manually as it is done above in add_utf8_anychar.  So, let's
+             start with UTF-8: it is the most used, and the structure of the
+             encoding makes the correctness more obvious.  */
+          add_utf8_anychar (dfa);
+        }
+      else
+        addtok (dfa, dfa->parse.tok);
+      dfa->parse.tok = lex (dfa);
+    }
+  else if (dfa->parse.tok == WCHAR)
+    {
+      if (dfa->lex.wctok == WEOF)
+        addtok (dfa, BACKREF);
+      else
+        {
+          addtok_wc (dfa, dfa->lex.wctok);
+
+          if (dfa->syntax.case_fold)
+            {
+              wchar_t folded[CASE_FOLDED_BUFSIZE];
+              int n = case_folded_counterparts (dfa->lex.wctok, folded);
+              for (int i = 0; i < n; i++)
+                {
+                  addtok_wc (dfa, folded[i]);
+                  addtok (dfa, OR);
+                }
+            }
+        }
+
+      dfa->parse.tok = lex (dfa);
+    }
+  else if (dfa->parse.tok == LPAREN)
+    {
+      dfa->parse.tok = lex (dfa);
+      regexp (dfa);
+      if (dfa->parse.tok != RPAREN)
+        dfaerror (_("unbalanced ("));
+      dfa->parse.tok = lex (dfa);
+    }
+  else
+    addtok (dfa, EMPTY);
+}
+
+/* Return the number of tokens in the given subexpression.  */
+static idx_t _GL_ATTRIBUTE_PURE
+nsubtoks (struct dfa const *dfa, idx_t tindex)
+{
+  switch (dfa->tokens[tindex - 1])
+    {
+    default:
+      return 1;
+    case QMARK:
+    case STAR:
+    case PLUS:
+      return 1 + nsubtoks (dfa, tindex - 1);
+    case CAT:
+    case OR:
+      {
+        idx_t ntoks1 = nsubtoks (dfa, tindex - 1);
+        return 1 + ntoks1 + nsubtoks (dfa, tindex - 1 - ntoks1);
+      }
+    }
+}
+
+/* Copy the given subexpression to the top of the tree.  */
+static void
+copytoks (struct dfa *dfa, idx_t tindex, idx_t ntokens)
+{
+  if (dfa->localeinfo.multibyte)
+    for (idx_t i = 0; i < ntokens; i++)
+      addtok_mb (dfa, dfa->tokens[tindex + i],
+                 dfa->multibyte_prop[tindex + i]);
+  else
+    for (idx_t i = 0; i < ntokens; i++)
+      addtok_mb (dfa, dfa->tokens[tindex + i], 3);
+}
+
+static void
+closure (struct dfa *dfa)
+{
+  atom (dfa);
+  while (dfa->parse.tok == QMARK || dfa->parse.tok == STAR
+         || dfa->parse.tok == PLUS || dfa->parse.tok == REPMN)
+    if (dfa->parse.tok == REPMN && (dfa->lex.minrep || dfa->lex.maxrep))
+      {
+        idx_t ntokens = nsubtoks (dfa, dfa->tindex);
+        idx_t tindex = dfa->tindex - ntokens;
+        if (dfa->lex.maxrep < 0)
+          addtok (dfa, PLUS);
+        if (dfa->lex.minrep == 0)
+          addtok (dfa, QMARK);
+        int i;
+        for (i = 1; i < dfa->lex.minrep; i++)
+          {
+            copytoks (dfa, tindex, ntokens);
+            addtok (dfa, CAT);
+          }
+        for (; i < dfa->lex.maxrep; i++)
+          {
+            copytoks (dfa, tindex, ntokens);
+            addtok (dfa, QMARK);
+            addtok (dfa, CAT);
+          }
+        dfa->parse.tok = lex (dfa);
+      }
+    else if (dfa->parse.tok == REPMN)
+      {
+        dfa->tindex -= nsubtoks (dfa, dfa->tindex);
+        dfa->parse.tok = lex (dfa);
+        closure (dfa);
+      }
+    else
+      {
+        addtok (dfa, dfa->parse.tok);
+        dfa->parse.tok = lex (dfa);
+      }
+}
+
+static void
+branch (struct dfa* dfa)
+{
+  closure (dfa);
+  while (dfa->parse.tok != RPAREN && dfa->parse.tok != OR
+         && dfa->parse.tok >= 0)
+    {
+      closure (dfa);
+      addtok (dfa, CAT);
+    }
+}
+
+static void
+regexp (struct dfa *dfa)
+{
+  branch (dfa);
+  while (dfa->parse.tok == OR)
+    {
+      dfa->parse.tok = lex (dfa);
+      branch (dfa);
+      addtok (dfa, OR);
+    }
+}
+
+/* Parse a string S of length LEN into D.  S can include NUL characters.
+   This is the main entry point for the parser.  */
+void
+dfaparse (char const *s, idx_t len, struct dfa *d)
+{
+  d->lex.ptr = s;
+  d->lex.left = len;
+  d->lex.lasttok = END;
+  d->lex.laststart = true;
+
+  if (!d->syntax.syntax_bits_set)
+    dfaerror (_("no syntax specified"));
+
+  if (!d->nregexps)
+    addtok (d, BEG);
+
+  d->parse.tok = lex (d);
+  d->parse.depth = d->depth;
+
+  regexp (d);
+
+  if (d->parse.tok != END)
+    dfaerror (_("unbalanced )"));
+
+  addtok (d, END - d->nregexps);
+  addtok (d, CAT);
+
+  if (d->nregexps)
+    addtok (d, OR);
+
+  ++d->nregexps;
+}
+
+/* Some primitives for operating on sets of positions.  */
+
+/* Copy one set to another.  */
+static void
+copy (position_set const *src, position_set *dst)
+{
+  if (dst->alloc < src->nelem)
+    {
+      free (dst->elems);
+      dst->elems = xpalloc (NULL, &dst->alloc, src->nelem - dst->alloc, -1,
+                            sizeof *dst->elems);
+    }
+  dst->nelem = src->nelem;
+  if (src->nelem != 0)
+    memcpy (dst->elems, src->elems, src->nelem * sizeof *dst->elems);
+}
+
+static void
+alloc_position_set (position_set *s, idx_t size)
+{
+  s->elems = xnmalloc (size, sizeof *s->elems);
+  s->alloc = size;
+  s->nelem = 0;
+}
+
+/* Insert position P in set S.  S is maintained in sorted order on
+   decreasing index.  If there is already an entry in S with P.index
+   then merge (logically-OR) P's constraints into the one in S.
+   S->elems must point to an array large enough to hold the resulting set.  */
+static void
+insert (position p, position_set *s)
+{
+  idx_t count = s->nelem;
+  idx_t lo = 0, hi = count;
+  while (lo < hi)
+    {
+      idx_t mid = (lo + hi) >> 1;
+      if (s->elems[mid].index < p.index)
+        lo = mid + 1;
+      else if (s->elems[mid].index == p.index)
+        {
+          s->elems[mid].constraint |= p.constraint;
+          return;
+        }
+      else
+        hi = mid;
+    }
+
+  s->elems = maybe_realloc (s->elems, count, &s->alloc, -1, sizeof *s->elems);
+  for (idx_t i = count; i > lo; i--)
+    s->elems[i] = s->elems[i - 1];
+  s->elems[lo] = p;
+  ++s->nelem;
+}
+
+static void
+append (position p, position_set *s)
+{
+  idx_t count = s->nelem;
+  s->elems = maybe_realloc (s->elems, count, &s->alloc, -1, sizeof *s->elems);
+  s->elems[s->nelem++] = p;
+}
+
+/* Merge S1 and S2 (with the additional constraint C2) into M.  The
+   result is as if the positions of S1, and of S2 with the additional
+   constraint C2, were inserted into an initially empty set.  */
+static void
+merge_constrained (position_set const *s1, position_set const *s2,
+                   unsigned int c2, position_set *m)
+{
+  idx_t i = 0, j = 0;
+
+  if (m->alloc - s1->nelem < s2->nelem)
+    {
+      free (m->elems);
+      m->alloc = s1->nelem;
+      m->elems = xpalloc (NULL, &m->alloc, s2->nelem, -1, sizeof *m->elems);
+    }
+  m->nelem = 0;
+  while (i < s1->nelem || j < s2->nelem)
+    if (! (j < s2->nelem)
+        || (i < s1->nelem && s1->elems[i].index <= s2->elems[j].index))
+      {
+        unsigned int c = ((i < s1->nelem && j < s2->nelem
+                           && s1->elems[i].index == s2->elems[j].index)
+                          ? s2->elems[j++].constraint & c2
+                          : 0);
+        m->elems[m->nelem].index = s1->elems[i].index;
+        m->elems[m->nelem++].constraint = s1->elems[i++].constraint | c;
+      }
+    else
+      {
+        if (s2->elems[j].constraint & c2)
+          {
+            m->elems[m->nelem].index = s2->elems[j].index;
+            m->elems[m->nelem++].constraint = s2->elems[j].constraint & c2;
+          }
+        j++;
+      }
+}
+
+/* Merge two sets of positions into a third.  The result is exactly as if
+   the positions of both sets were inserted into an initially empty set.  */
+static void
+merge (position_set const *s1, position_set const *s2, position_set *m)
+{
+  merge_constrained (s1, s2, -1, m);
+}
+
+/* Merge into DST all the elements of SRC, possibly destroying
+   the contents of the temporary M.  */
+static void
+merge2 (position_set *dst, position_set const *src, position_set *m)
+{
+  if (src->nelem < 4)
+    {
+      for (idx_t i = 0; i < src->nelem; i++)
+        insert (src->elems[i], dst);
+    }
+   else
+    {
+      merge (src, dst, m);
+      copy (m, dst);
+    }
+}
+
+/* Delete a position from a set.  Return the nonzero constraint of the
+   deleted position, or zero if there was no such position.  */
+static unsigned int
+delete (idx_t del, position_set *s)
+{
+  idx_t count = s->nelem;
+  idx_t lo = 0, hi = count;
+  while (lo < hi)
+    {
+      idx_t mid = (lo + hi) >> 1;
+      if (s->elems[mid].index < del)
+        lo = mid + 1;
+      else if (s->elems[mid].index == del)
+        {
+          unsigned int c = s->elems[mid].constraint;
+          idx_t i;
+          for (i = mid; i + 1 < count; i++)
+            s->elems[i] = s->elems[i + 1];
+          s->nelem = i;
+          return c;
+        }
+      else
+        hi = mid;
+    }
+  return 0;
+}
+
+/* Replace a position with the followed set.  */
+static void
+replace (position_set *dst, idx_t del, position_set *add,
+         unsigned int constraint, position_set *tmp)
+{
+  unsigned int c = delete (del, dst) & constraint;
+
+  if (c)
+    {
+      copy (dst, tmp);
+      merge_constrained (tmp, add, c, dst);
+    }
+}
+
+/* Find the index of the state corresponding to the given position set with
+   the given preceding context, or create a new state if there is no such
+   state.  Context tells whether we got here on a newline or letter.  */
+static state_num
+state_index (struct dfa *d, position_set const *s, int context)
+{
+  size_t hash = 0;
+  int constraint = 0;
+  state_num i;
+
+  for (i = 0; i < s->nelem; ++i)
+    {
+      idx_t ind = s->elems[i].index;
+      hash ^= ind + s->elems[i].constraint;
+    }
+
+  /* Try to find a state that exactly matches the proposed one.  */
+  for (i = 0; i < d->sindex; ++i)
+    {
+      if (hash != d->states[i].hash || s->nelem != d->states[i].elems.nelem
+          || context != d->states[i].context)
+        continue;
+      state_num j;
+      for (j = 0; j < s->nelem; ++j)
+        if (s->elems[j].constraint != d->states[i].elems.elems[j].constraint
+            || s->elems[j].index != d->states[i].elems.elems[j].index)
+          break;
+      if (j == s->nelem)
+        return i;
+    }
+
+#ifdef DEBUG
+  fprintf (stderr, "new state %td\n nextpos:", i);
+  for (state_num j = 0; j < s->nelem; j++)
+    {
+      fprintf (stderr, " %td:", s->elems[j].index);
+      prtok (d->tokens[s->elems[j].index]);
+    }
+  fprintf (stderr, "\n context:");
+  if (context ^ CTX_ANY)
+    {
+      if (context & CTX_NONE)
+        fprintf (stderr, " CTX_NONE");
+      if (context & CTX_LETTER)
+        fprintf (stderr, " CTX_LETTER");
+      if (context & CTX_NEWLINE)
+        fprintf (stderr, " CTX_NEWLINE");
+    }
+  else
+    fprintf (stderr, " CTX_ANY");
+  fprintf (stderr, "\n");
+#endif
+
+  for (state_num j = 0; j < s->nelem; j++)
+    {
+      int c = d->constraints[s->elems[j].index];
+
+      if (c != 0)
+        {
+          if (succeeds_in_context (c, context, CTX_ANY))
+            constraint |= c;
+        }
+      else if (d->tokens[s->elems[j].index] == BACKREF)
+        constraint = NO_CONSTRAINT;
+    }
+
+
+  /* Create a new state.  */
+  d->states = maybe_realloc (d->states, d->sindex, &d->salloc, -1,
+                             sizeof *d->states);
+  d->states[i].hash = hash;
+  alloc_position_set (&d->states[i].elems, s->nelem);
+  copy (s, &d->states[i].elems);
+  d->states[i].context = context;
+  d->states[i].constraint = constraint;
+  d->states[i].mbps.nelem = 0;
+  d->states[i].mbps.elems = NULL;
+  d->states[i].mb_trindex = -1;
+
+  ++d->sindex;
+
+  return i;
+}
+
+/* Find the epsilon closure of D's set of positions.  If any position of the set
+   contains a symbol that matches the empty string in some context, replace
+   that position with the elements of its follow labeled with an appropriate
+   constraint.  Repeat exhaustively until no funny positions are left.
+   S->elems must be large enough to hold the result.  BACKWARD is D's
+   backward set; use and update it too.  */
+static void
+epsclosure (struct dfa const *d, position_set *backward)
+{
+  position_set tmp;
+  alloc_position_set (&tmp, d->nleaves);
+  for (idx_t i = 0; i < d->tindex; i++)
+    if (0 < d->follows[i].nelem)
+      {
+        unsigned int constraint;
+        switch (d->tokens[i])
+          {
+          default:
+            continue;
+
+          case BEGLINE:
+            constraint = BEGLINE_CONSTRAINT;
+            break;
+          case ENDLINE:
+            constraint = ENDLINE_CONSTRAINT;
+            break;
+          case BEGWORD:
+            constraint = BEGWORD_CONSTRAINT;
+            break;
+          case ENDWORD:
+            constraint = ENDWORD_CONSTRAINT;
+            break;
+          case LIMWORD:
+            constraint = LIMWORD_CONSTRAINT;
+            break;
+          case NOTLIMWORD:
+            constraint = NOTLIMWORD_CONSTRAINT;
+            break;
+          case EMPTY:
+            constraint = NO_CONSTRAINT;
+            break;
+          }
+
+        delete (i, &d->follows[i]);
+
+        for (idx_t j = 0; j < backward[i].nelem; j++)
+          replace (&d->follows[backward[i].elems[j].index], i, &d->follows[i],
+                   constraint, &tmp);
+        for (idx_t j = 0; j < d->follows[i].nelem; j++)
+          replace (&backward[d->follows[i].elems[j].index], i, &backward[i],
+                   NO_CONSTRAINT, &tmp);
+      }
+  free (tmp.elems);
+}
+
+/* Returns the set of contexts for which there is at least one
+   character included in C.  */
+
+static int
+charclass_context (struct dfa const *dfa, charclass const *c)
+{
+  int context = 0;
+
+  for (int j = 0; j < CHARCLASS_WORDS; j++)
+    {
+      if (c->w[j] & dfa->syntax.newline.w[j])
+        context |= CTX_NEWLINE;
+      if (c->w[j] & dfa->syntax.letters.w[j])
+        context |= CTX_LETTER;
+      if (c->w[j] & ~(dfa->syntax.letters.w[j] | dfa->syntax.newline.w[j]))
+        context |= CTX_NONE;
+    }
+
+  return context;
+}
+
+/* Returns the contexts on which the position set S depends.  Each context
+   in the set of returned contexts (let's call it SC) may have a different
+   follow set than other contexts in SC, and also different from the
+   follow set of the complement set (sc ^ CTX_ANY).  However, all contexts
+   in the complement set will have the same follow set.  */
+
+static int _GL_ATTRIBUTE_PURE
+state_separate_contexts (struct dfa *d, position_set const *s)
+{
+  int separate_contexts = 0;
+
+  for (idx_t j = 0; j < s->nelem; j++)
+    separate_contexts |= d->separates[s->elems[j].index];
+
+  return separate_contexts;
+}
+
+enum
+{
+  /* Single token is repeated.  It is distinguished from non-repeated.  */
+  OPT_REPEAT = (1 << 0),
+
+  /* Multiple tokens are repeated.  This flag is on at head of tokens.  The
+     node is not merged.  */
+  OPT_LPAREN = (1 << 1),
+
+  /* Multiple branches are joined.  The node is not merged.  */
+  OPT_RPAREN = (1 << 2),
+
+  /* The node is walked.  If the node is found in walking again, OPT_RPAREN
+     flag is turned on. */
+  OPT_WALKED = (1 << 3),
+
+  /* The node is queued.  The node is not queued again.  */
+  OPT_QUEUED = (1 << 4)
+};
+
+static void
+merge_nfa_state (struct dfa *d, idx_t tindex, char *flags,
+                 position_set *merged)
+{
+  position_set *follows = d->follows;
+  idx_t nelem = 0;
+
+  for (idx_t i = 0; i < follows[tindex].nelem; i++)
+    {
+      idx_t sindex = follows[tindex].elems[i].index;
+
+      /* Skip the node as pruned in future.  */
+      unsigned int iconstraint = follows[tindex].elems[i].constraint;
+      if (iconstraint == 0)
+        continue;
+
+      if (d->tokens[follows[tindex].elems[i].index] <= END)
+        {
+          d->constraints[tindex] |= follows[tindex].elems[i].constraint;
+          continue;
+        }
+
+      if (sindex != tindex && !(flags[sindex] & (OPT_LPAREN | OPT_RPAREN)))
+        {
+          idx_t j;
+
+          for (j = 0; j < nelem; j++)
+            {
+              idx_t dindex = follows[tindex].elems[j].index;
+
+              if (dindex == tindex)
+                continue;
+
+              if (follows[tindex].elems[j].constraint != iconstraint)
+                continue;
+
+              if (flags[dindex] & (OPT_LPAREN | OPT_RPAREN))
+                continue;
+
+              if (d->tokens[sindex] != d->tokens[dindex])
+                continue;
+
+              if ((flags[sindex] ^ flags[dindex]) & OPT_REPEAT)
+                continue;
+
+              if (flags[sindex] & OPT_REPEAT)
+                delete (sindex, &follows[sindex]);
+
+              merge2 (&follows[dindex], &follows[sindex], merged);
+
+              break;
+            }
+
+          if (j < nelem)
+            continue;
+        }
+
+      follows[tindex].elems[nelem++] = follows[tindex].elems[i];
+      flags[sindex] |= OPT_QUEUED;
+    }
+
+  follows[tindex].nelem = nelem;
+}
+
+static int
+compare (const void *a, const void *b)
+{
+  position const *p = a, *q = b;
+  return (p->index > q->index) - (p->index < q->index);
+}
+
+static void
+reorder_tokens (struct dfa *d)
+{
+  idx_t nleaves = 0;
+  ptrdiff_t *map = xnmalloc (d->tindex, sizeof *map);
+  map[0] = nleaves++;
+  for (idx_t i = 1; i < d->tindex; i++)
+    map[i] = -1;
+
+  token *tokens = xnmalloc (d->nleaves, sizeof *tokens);
+  position_set *follows = xnmalloc (d->nleaves, sizeof *follows);
+  int *constraints = xnmalloc (d->nleaves, sizeof *constraints);
+  char *multibyte_prop = (d->localeinfo.multibyte
+                          ? xnmalloc (d->nleaves, sizeof *multibyte_prop)
+                          : NULL);
+
+  for (idx_t i = 0; i < d->tindex; i++)
+    {
+      if (map[i] < 0)
+        {
+          free (d->follows[i].elems);
+          d->follows[i].elems = NULL;
+          d->follows[i].nelem = 0;
+          continue;
+        }
+
+      tokens[map[i]] = d->tokens[i];
+      follows[map[i]] = d->follows[i];
+      constraints[map[i]] = d->constraints[i];
+
+      if (multibyte_prop != NULL)
+        multibyte_prop[map[i]] = d->multibyte_prop[i];
+
+      for (idx_t j = 0; j < d->follows[i].nelem; j++)
+        {
+          if (map[d->follows[i].elems[j].index] == -1)
+            map[d->follows[i].elems[j].index] = nleaves++;
+
+          d->follows[i].elems[j].index = map[d->follows[i].elems[j].index];
+        }
+
+      qsort (d->follows[i].elems, d->follows[i].nelem,
+             sizeof *d->follows[i].elems, compare);
+    }
+
+  for (idx_t i = 0; i < nleaves; i++)
+    {
+      d->tokens[i] = tokens[i];
+      d->follows[i] = follows[i];
+      d->constraints[i] = constraints[i];
+
+      if (multibyte_prop != NULL)
+        d->multibyte_prop[i] = multibyte_prop[i];
+    }
+
+  d->tindex = d->nleaves = nleaves;
+
+  free (tokens);
+  free (follows);
+  free (constraints);
+  free (multibyte_prop);
+  free (map);
+}
+
+static void
+dfaoptimize (struct dfa *d)
+{
+  char *flags = xizalloc (d->tindex);
+
+  for (idx_t i = 0; i < d->tindex; i++)
+    {
+      for (idx_t j = 0; j < d->follows[i].nelem; j++)
+        {
+          if (d->follows[i].elems[j].index == i)
+            flags[d->follows[i].elems[j].index] |= OPT_REPEAT;
+          else if (d->follows[i].elems[j].index < i)
+            flags[d->follows[i].elems[j].index] |= OPT_LPAREN;
+          else if (flags[d->follows[i].elems[j].index] &= OPT_WALKED)
+            flags[d->follows[i].elems[j].index] |= OPT_RPAREN;
+          else
+            flags[d->follows[i].elems[j].index] |= OPT_WALKED;
+        }
+    }
+
+  flags[0] |= OPT_QUEUED;
+
+  position_set merged0;
+  position_set *merged = &merged0;
+  alloc_position_set (merged, d->nleaves);
+
+  d->constraints = xicalloc (d->tindex, sizeof *d->constraints);
+
+  for (idx_t i = 0; i < d->tindex; i++)
+    if (flags[i] & OPT_QUEUED)
+      merge_nfa_state (d, i, flags, merged);
+
+  reorder_tokens (d);
+
+  free (merged->elems);
+  free (flags);
+}
+
+/* Perform bottom-up analysis on the parse tree, computing various functions.
+   Note that at this point, we're pretending constructs like \< are real
+   characters rather than constraints on what can follow them.
+
+   Nullable:  A node is nullable if it is at the root of a regexp that can
+   match the empty string.
+   *  EMPTY leaves are nullable.
+   * No other leaf is nullable.
+   * A QMARK or STAR node is nullable.
+   * A PLUS node is nullable if its argument is nullable.
+   * A CAT node is nullable if both its arguments are nullable.
+   * An OR node is nullable if either argument is nullable.
+
+   Firstpos:  The firstpos of a node is the set of positions (nonempty leaves)
+   that could correspond to the first character of a string matching the
+   regexp rooted at the given node.
+   * EMPTY leaves have empty firstpos.
+   * The firstpos of a nonempty leaf is that leaf itself.
+   * The firstpos of a QMARK, STAR, or PLUS node is the firstpos of its
+     argument.
+   * The firstpos of a CAT node is the firstpos of the left argument, union
+     the firstpos of the right if the left argument is nullable.
+   * The firstpos of an OR node is the union of firstpos of each argument.
+
+   Lastpos:  The lastpos of a node is the set of positions that could
+   correspond to the last character of a string matching the regexp at
+   the given node.
+   * EMPTY leaves have empty lastpos.
+   * The lastpos of a nonempty leaf is that leaf itself.
+   * The lastpos of a QMARK, STAR, or PLUS node is the lastpos of its
+     argument.
+   * The lastpos of a CAT node is the lastpos of its right argument, union
+     the lastpos of the left if the right argument is nullable.
+   * The lastpos of an OR node is the union of the lastpos of each argument.
+
+   Follow:  The follow of a position is the set of positions that could
+   correspond to the character following a character matching the node in
+   a string matching the regexp.  At this point we consider special symbols
+   that match the empty string in some context to be just normal characters.
+   Later, if we find that a special symbol is in a follow set, we will
+   replace it with the elements of its follow, labeled with an appropriate
+   constraint.
+   * Every node in the firstpos of the argument of a STAR or PLUS node is in
+     the follow of every node in the lastpos.
+   * Every node in the firstpos of the second argument of a CAT node is in
+     the follow of every node in the lastpos of the first argument.
+
+   Because of the postfix representation of the parse tree, the depth-first
+   analysis is conveniently done by a linear scan with the aid of a stack.
+   Sets are stored as arrays of the elements, obeying a stack-like allocation
+   scheme; the number of elements in each set deeper in the stack can be
+   used to determine the address of a particular set's array.  */
+static void
+dfaanalyze (struct dfa *d, bool searchflag)
+{
+  /* Array allocated to hold position sets.  */
+  position *posalloc = xnmalloc (d->nleaves, 2 * sizeof *posalloc);
+  /* Firstpos and lastpos elements.  */
+  position *firstpos = posalloc;
+  position *lastpos = firstpos + d->nleaves;
+  position pos;
+  position_set tmp;
+
+  /* Stack for element counts and nullable flags.  */
+  struct
+  {
+    /* Whether the entry is nullable.  */
+    bool nullable;
+
+    /* Counts of firstpos and lastpos sets.  */
+    idx_t nfirstpos;
+    idx_t nlastpos;
+  } *stkalloc = xnmalloc (d->depth, sizeof *stkalloc), *stk = stkalloc;
+
+  position_set merged;          /* Result of merging sets.  */
+
+  addtok (d, CAT);
+  idx_t tindex = d->tindex;
+
+#ifdef DEBUG
+  fprintf (stderr, "dfaanalyze:\n");
+  for (idx_t i = 0; i < tindex; i++)
+    {
+      fprintf (stderr, " %td:", i);
+      prtok (d->tokens[i]);
+    }
+  putc ('\n', stderr);
+#endif
+
+  d->searchflag = searchflag;
+  alloc_position_set (&merged, d->nleaves);
+  d->follows = xicalloc (tindex, sizeof *d->follows);
+  position_set *backward
+    = d->epsilon ? xicalloc (tindex, sizeof *backward) : NULL;
+
+  for (idx_t i = 0; i < tindex; i++)
+    {
+      switch (d->tokens[i])
+        {
+        case EMPTY:
+          /* The empty set is nullable.  */
+          stk->nullable = true;
+
+          /* The firstpos and lastpos of the empty leaf are both empty.  */
+          stk->nfirstpos = stk->nlastpos = 0;
+          stk++;
+          break;
+
+        case STAR:
+        case PLUS:
+          /* Every element in the lastpos of the argument is in the backward
+             set of every element in the firstpos.  */
+          if (d->epsilon)
+            {
+              tmp.elems = lastpos - stk[-1].nlastpos;
+              tmp.nelem = stk[-1].nlastpos;
+              for (position *p = firstpos - stk[-1].nfirstpos;
+                   p < firstpos; p++)
+                merge2 (&backward[p->index], &tmp, &merged);
+            }
+
+          /* Every element in the firstpos of the argument is in the follow
+             of every element in the lastpos.  */
+          {
+            tmp.elems = firstpos - stk[-1].nfirstpos;
+            tmp.nelem = stk[-1].nfirstpos;
+            for (position *p = lastpos - stk[-1].nlastpos; p < lastpos; p++)
+              merge2 (&d->follows[p->index], &tmp, &merged);
+          }
+          FALLTHROUGH;
+        case QMARK:
+          /* A QMARK or STAR node is automatically nullable.  */
+          if (d->tokens[i] != PLUS)
+            stk[-1].nullable = true;
+          break;
+
+        case CAT:
+          /* Every element in the lastpos of the first argument is in
+             the backward set of every element in the firstpos of the
+             second argument.  */
+          if (backward)
+            {
+              tmp.nelem = stk[-2].nlastpos;
+              tmp.elems = lastpos - stk[-1].nlastpos - stk[-2].nlastpos;
+              for (position *p = firstpos - stk[-1].nfirstpos;
+                   p < firstpos; p++)
+                merge2 (&backward[p->index], &tmp, &merged);
+            }
+
+          /* Every element in the firstpos of the second argument is in the
+             follow of every element in the lastpos of the first argument.  */
+          {
+            tmp.nelem = stk[-1].nfirstpos;
+            tmp.elems = firstpos - stk[-1].nfirstpos;
+            for (position *plim = lastpos - stk[-1].nlastpos,
+                   *p = plim - stk[-2].nlastpos;
+                 p < plim; p++)
+              merge2 (&d->follows[p->index], &tmp, &merged);
+          }
+
+          /* The firstpos of a CAT node is the firstpos of the first argument,
+             union that of the second argument if the first is nullable.  */
+          if (stk[-2].nullable)
+            stk[-2].nfirstpos += stk[-1].nfirstpos;
+          else
+            firstpos -= stk[-1].nfirstpos;
+
+          /* The lastpos of a CAT node is the lastpos of the second argument,
+             union that of the first argument if the second is nullable.  */
+          if (stk[-1].nullable)
+            stk[-2].nlastpos += stk[-1].nlastpos;
+          else
+            {
+              position *p = lastpos - stk[-1].nlastpos - stk[-2].nlastpos;
+              for (idx_t j = 0; j < stk[-1].nlastpos; j++)
+                p[j] = p[j + stk[-2].nlastpos];
+              lastpos -= stk[-2].nlastpos;
+              stk[-2].nlastpos = stk[-1].nlastpos;
+            }
+
+          /* A CAT node is nullable if both arguments are nullable.  */
+          stk[-2].nullable &= stk[-1].nullable;
+          stk--;
+          break;
+
+        case OR:
+          /* The firstpos is the union of the firstpos of each argument.  */
+          stk[-2].nfirstpos += stk[-1].nfirstpos;
+
+          /* The lastpos is the union of the lastpos of each argument.  */
+          stk[-2].nlastpos += stk[-1].nlastpos;
+
+          /* An OR node is nullable if either argument is nullable.  */
+          stk[-2].nullable |= stk[-1].nullable;
+          stk--;
+          break;
+
+        default:
+          /* Anything else is a nonempty position.  (Note that special
+             constructs like \< are treated as nonempty strings here;
+             an "epsilon closure" effectively makes them nullable later.
+             Backreferences have to get a real position so we can detect
+             transitions on them later.  But they are nullable.  */
+          stk->nullable = d->tokens[i] == BACKREF;
+
+          /* This position is in its own firstpos and lastpos.  */
+          stk->nfirstpos = stk->nlastpos = 1;
+          stk++;
+
+          firstpos->index = lastpos->index = i;
+          firstpos->constraint = lastpos->constraint = NO_CONSTRAINT;
+          firstpos++, lastpos++;
+
+          break;
+        }
+#ifdef DEBUG
+      /* ... balance the above nonsyntactic #ifdef goo...  */
+      fprintf (stderr, "node %td:", i);
+      prtok (d->tokens[i]);
+      putc ('\n', stderr);
+      fprintf (stderr,
+               stk[-1].nullable ? " nullable: yes\n" : " nullable: no\n");
+      fprintf (stderr, " firstpos:");
+      for (idx_t j = 0; j < stk[-1].nfirstpos; j++)
+        {
+          fprintf (stderr, " %td:", firstpos[j - stk[-1].nfirstpos].index);
+          prtok (d->tokens[firstpos[j - stk[-1].nfirstpos].index]);
+        }
+      fprintf (stderr, "\n lastpos:");
+      for (idx_t j = 0; j < stk[-1].nlastpos; j++)
+        {
+          fprintf (stderr, " %td:", lastpos[j - stk[-1].nlastpos].index);
+          prtok (d->tokens[lastpos[j - stk[-1].nlastpos].index]);
+        }
+      putc ('\n', stderr);
+#endif
+    }
+
+  if (backward)
+    {
+      /* For each follow set that is the follow set of a real position,
+         replace it with its epsilon closure.  */
+      epsclosure (d, backward);
+
+      for (idx_t i = 0; i < tindex; i++)
+        free (backward[i].elems);
+      free (backward);
+    }
+
+  dfaoptimize (d);
+
+#ifdef DEBUG
+  for (idx_t i = 0; i < tindex; i++)
+    if (d->tokens[i] == BEG || d->tokens[i] < NOTCHAR
+        || d->tokens[i] == BACKREF || d->tokens[i] == ANYCHAR
+        || d->tokens[i] == MBCSET || d->tokens[i] >= CSET)
+      {
+        fprintf (stderr, "follows(%td:", i);
+        prtok (d->tokens[i]);
+        fprintf (stderr, "):");
+        for (idx_t j = 0; j < d->follows[i].nelem; j++)
+          {
+            fprintf (stderr, " %td:", d->follows[i].elems[j].index);
+            prtok (d->tokens[d->follows[i].elems[j].index]);
+          }
+        putc ('\n', stderr);
+      }
+#endif
+
+  pos.index = 0;
+  pos.constraint = NO_CONSTRAINT;
+
+  alloc_position_set (&tmp, 1);
+
+  append (pos, &tmp);
+
+  d->separates = xicalloc (tindex, sizeof *d->separates);
+
+  for (idx_t i = 0; i < tindex; i++)
+    {
+      if (prev_newline_dependent (d->constraints[i]))
+        d->separates[i] |= CTX_NEWLINE;
+      if (prev_letter_dependent (d->constraints[i]))
+        d->separates[i] |= CTX_LETTER;
+
+      for (idx_t j = 0; j < d->follows[i].nelem; j++)
+        {
+          if (prev_newline_dependent (d->follows[i].elems[j].constraint))
+            d->separates[i] |= CTX_NEWLINE;
+          if (prev_letter_dependent (d->follows[i].elems[j].constraint))
+            d->separates[i] |= CTX_LETTER;
+        }
+    }
+
+  /* Context wanted by some position.  */
+  int separate_contexts = state_separate_contexts (d, &tmp);
+
+  /* Build the initial state.  */
+  if (separate_contexts & CTX_NEWLINE)
+    state_index (d, &tmp, CTX_NEWLINE);
+  d->initstate_notbol = d->min_trcount
+    = state_index (d, &tmp, separate_contexts ^ CTX_ANY);
+  if (separate_contexts & CTX_LETTER)
+    d->min_trcount = state_index (d, &tmp, CTX_LETTER);
+  d->min_trcount++;
+  d->trcount = 0;
+
+  free (posalloc);
+  free (stkalloc);
+  free (merged.elems);
+  free (tmp.elems);
+}
+
+/* Make sure D's state arrays are large enough to hold NEW_STATE.  */
+static void
+realloc_trans_if_necessary (struct dfa *d)
+{
+  state_num oldalloc = d->tralloc;
+  if (oldalloc < d->sindex)
+    {
+      state_num **realtrans = d->trans ? d->trans - 2 : NULL;
+      idx_t newalloc1 = realtrans ? d->tralloc + 2 : 0;
+      realtrans = xpalloc (realtrans, &newalloc1, d->sindex - oldalloc,
+                           -1, sizeof *realtrans);
+      realtrans[0] = realtrans[1] = NULL;
+      d->trans = realtrans + 2;
+      idx_t newalloc = d->tralloc = newalloc1 - 2;
+      d->fails = xreallocarray (d->fails, newalloc, sizeof *d->fails);
+      d->success = xreallocarray (d->success, newalloc, sizeof *d->success);
+      d->newlines = xreallocarray (d->newlines, newalloc, sizeof *d->newlines);
+      if (d->localeinfo.multibyte)
+        {
+          realtrans = d->mb_trans ? d->mb_trans - 2 : NULL;
+          realtrans = xreallocarray (realtrans, newalloc1, sizeof *realtrans);
+          if (oldalloc == 0)
+            realtrans[0] = realtrans[1] = NULL;
+          d->mb_trans = realtrans + 2;
+        }
+      for (; oldalloc < newalloc; oldalloc++)
+        {
+          d->trans[oldalloc] = NULL;
+          d->fails[oldalloc] = NULL;
+          if (d->localeinfo.multibyte)
+            d->mb_trans[oldalloc] = NULL;
+        }
+    }
+}
+
+/*
+   Calculate the transition table for a new state derived from state s
+   for a compiled dfa d after input character uc, and return the new
+   state number.
+
+   Do not worry about all possible input characters; calculate just the group
+   of positions that match uc.  Label it with the set of characters that
+   every position in the group matches (taking into account, if necessary,
+   preceding context information of s).  Then find the union
+   of these positions' follows, i.e., the set of positions of the
+   new state.  For each character in the group's label, set the transition
+   on this character to be to a state corresponding to the set's positions,
+   and its associated backward context information, if necessary.
+
+   When building a searching matcher, include the positions of state
+   0 in every state.
+
+   The group is constructed by building an equivalence-class
+   partition of the positions of s.
+
+   For each position, find the set of characters C that it matches.  Eliminate
+   any characters from C that fail on grounds of backward context.
+
+   Check whether the group's label L has nonempty
+   intersection with C.  If L - C is nonempty, create a new group labeled
+   L - C and having the same positions as the current group, and set L to
+   the intersection of L and C.  Insert the position in the group, set
+   C = C - L, and resume scanning.
+
+   If after comparing with every group there are characters remaining in C,
+   create a new group labeled with the characters of C and insert this
+   position in that group.  */
+
+static state_num
+build_state (state_num s, struct dfa *d, unsigned char uc)
+{
+  position_set follows;         /* Union of the follows for each
+                                   position of the current state.  */
+  position_set group;           /* Positions that match the input char.  */
+  position_set tmp;             /* Temporary space for merging sets.  */
+  state_num state;              /* New state.  */
+  state_num state_newline;      /* New state on a newline transition.  */
+  state_num state_letter;       /* New state on a letter transition.  */
+
+#ifdef DEBUG
+  fprintf (stderr, "build state %td\n", s);
+#endif
+
+  /* A pointer to the new transition table, and the table itself.  */
+  state_num **ptrans = (accepting (s, d) ? d->fails : d->trans) + s;
+  state_num *trans = *ptrans;
+
+  if (!trans)
+    {
+      /* MAX_TRCOUNT is an arbitrary upper limit on the number of
+         transition tables that can exist at once, other than for
+         initial states.  Often-used transition tables are quickly
+         rebuilt, whereas rarely-used ones are cleared away.  */
+      if (MAX_TRCOUNT <= d->trcount)
+        {
+          for (state_num i = d->min_trcount; i < d->tralloc; i++)
+            {
+              free (d->trans[i]);
+              free (d->fails[i]);
+              d->trans[i] = d->fails[i] = NULL;
+            }
+          d->trcount = 0;
+        }
+
+      d->trcount++;
+      *ptrans = trans = xmalloc (NOTCHAR * sizeof *trans);
+
+      /* Fill transition table with a default value which means that the
+         transited state has not been calculated yet.  */
+      for (int i = 0; i < NOTCHAR; i++)
+        trans[i] = -2;
+    }
+
+  /* Set up the success bits for this state.  */
+  d->success[s] = 0;
+  if (accepts_in_context (d->states[s].context, CTX_NEWLINE, s, d))
+    d->success[s] |= CTX_NEWLINE;
+  if (accepts_in_context (d->states[s].context, CTX_LETTER, s, d))
+    d->success[s] |= CTX_LETTER;
+  if (accepts_in_context (d->states[s].context, CTX_NONE, s, d))
+    d->success[s] |= CTX_NONE;
+
+  alloc_position_set (&follows, d->nleaves);
+
+  /* Find the union of the follows of the positions of the group.
+     This is a hideously inefficient loop.  Fix it someday.  */
+  for (idx_t j = 0; j < d->states[s].elems.nelem; j++)
+    for (idx_t k = 0;
+         k < d->follows[d->states[s].elems.elems[j].index].nelem; ++k)
+      insert (d->follows[d->states[s].elems.elems[j].index].elems[k],
+              &follows);
+
+  /* Positions that match the input char.  */
+  alloc_position_set (&group, d->nleaves);
+
+  /* The group's label.  */
+  charclass label;
+  fillset (&label);
+
+  for (idx_t i = 0; i < follows.nelem; i++)
+    {
+      charclass matches;            /* Set of matching characters.  */
+      position pos = follows.elems[i];
+      bool matched = false;
+      if (d->tokens[pos.index] >= 0 && d->tokens[pos.index] < NOTCHAR)
+        {
+          zeroset (&matches);
+          setbit (d->tokens[pos.index], &matches);
+          if (d->tokens[pos.index] == uc)
+            matched = true;
+        }
+      else if (d->tokens[pos.index] >= CSET)
+        {
+          matches = d->charclasses[d->tokens[pos.index] - CSET];
+          if (tstbit (uc, &matches))
+            matched = true;
+        }
+      else if (d->tokens[pos.index] == ANYCHAR)
+        {
+          matches = d->charclasses[d->canychar];
+          if (tstbit (uc, &matches))
+            matched = true;
+
+          /* ANYCHAR must match with a single character, so we must put
+             it to D->states[s].mbps which contains the positions which
+             can match with a single character not a byte.  If all
+             positions which has ANYCHAR does not depend on context of
+             next character, we put the follows instead of it to
+             D->states[s].mbps to optimize.  */
+          if (succeeds_in_context (pos.constraint, d->states[s].context,
+                                   CTX_NONE))
+            {
+              if (d->states[s].mbps.nelem == 0)
+                alloc_position_set (&d->states[s].mbps, 1);
+              insert (pos, &d->states[s].mbps);
+            }
+        }
+      else
+        continue;
+
+      /* Some characters may need to be eliminated from matches because
+         they fail in the current context.  */
+      if (pos.constraint != NO_CONSTRAINT)
+        {
+          if (!succeeds_in_context (pos.constraint,
+                                    d->states[s].context, CTX_NEWLINE))
+            for (int j = 0; j < CHARCLASS_WORDS; j++)
+              matches.w[j] &= ~d->syntax.newline.w[j];
+          if (!succeeds_in_context (pos.constraint,
+                                    d->states[s].context, CTX_LETTER))
+            for (int j = 0; j < CHARCLASS_WORDS; ++j)
+              matches.w[j] &= ~d->syntax.letters.w[j];
+          if (!succeeds_in_context (pos.constraint,
+                                    d->states[s].context, CTX_NONE))
+            for (int j = 0; j < CHARCLASS_WORDS; ++j)
+              matches.w[j] &= d->syntax.letters.w[j] | d->syntax.newline.w[j];
+
+          /* If there are no characters left, there's no point in going on.  */
+          if (emptyset (&matches))
+            continue;
+
+          /* If we have reset the bit that made us declare "matched", reset
+             that indicator, too.  This is required to avoid an infinite loop
+             with this command: echo cx | LC_ALL=C grep -E 'c\b[x ]'  */
+          if (!tstbit (uc, &matches))
+            matched = false;
+        }
+
+#ifdef DEBUG
+      fprintf (stderr, " nextpos %td:", pos.index);
+      prtok (d->tokens[pos.index]);
+      fprintf (stderr, " of");
+      for (unsigned j = 0; j < NOTCHAR; j++)
+        if (tstbit (j, &matches))
+          fprintf (stderr, " 0x%02x", j);
+      fprintf (stderr, "\n");
+#endif
+
+      if (matched)
+        {
+          for (int k = 0; k < CHARCLASS_WORDS; ++k)
+            label.w[k] &= matches.w[k];
+          append (pos, &group);
+        }
+      else
+        {
+          for (int k = 0; k < CHARCLASS_WORDS; ++k)
+            label.w[k] &= ~matches.w[k];
+        }
+    }
+
+  alloc_position_set (&tmp, d->nleaves);
+
+  if (group.nelem > 0)
+    {
+      /* If we are building a searching matcher, throw in the positions
+         of state 0 as well, if possible.  */
+      if (d->searchflag)
+        {
+          /* If a token in follows.elems is not 1st byte of a multibyte
+             character, or the states of follows must accept the bytes
+             which are not 1st byte of the multibyte character.
+             Then, if a state of follows encounters a byte, it must not be
+             a 1st byte of a multibyte character nor a single byte character.
+             In this case, do not add state[0].follows to next state, because
+             state[0] must accept 1st-byte.
+
+             For example, suppose <sb a> is a certain single byte character,
+             <mb A> is a certain multibyte character, and the codepoint of
+             <sb a> equals the 2nd byte of the codepoint of <mb A>.  When
+             state[0] accepts <sb a>, state[i] transits to state[i+1] by
+             accepting the 1st byte of <mb A>, and state[i+1] accepts the
+             2nd byte of <mb A>, if state[i+1] encounters the codepoint of
+             <sb a>, it must not be <sb a> but the 2nd byte of <mb A>, so do
+             not add state[0].  */
+
+          bool mergeit = !d->localeinfo.multibyte;
+          if (!mergeit)
+            {
+              mergeit = true;
+              for (idx_t j = 0; mergeit && j < group.nelem; j++)
+                mergeit &= d->multibyte_prop[group.elems[j].index];
+            }
+          if (mergeit)
+            merge2 (&group, &d->states[0].elems, &tmp);
+        }
+
+      /* Find out if the new state will want any context information,
+         by calculating possible contexts that the group can match,
+         and separate contexts that the new state wants to know.  */
+      int possible_contexts = charclass_context (d, &label);
+      int separate_contexts = state_separate_contexts (d, &group);
+
+      /* Find the state(s) corresponding to the union of the follows.  */
+      if (possible_contexts & ~separate_contexts)
+        state = state_index (d, &group, separate_contexts ^ CTX_ANY);
+      else
+        state = -1;
+      if (separate_contexts & possible_contexts & CTX_NEWLINE)
+        state_newline = state_index (d, &group, CTX_NEWLINE);
+      else
+        state_newline = state;
+      if (separate_contexts & possible_contexts & CTX_LETTER)
+        state_letter = state_index (d, &group, CTX_LETTER);
+      else
+        state_letter = state;
+
+      /* Reallocate now, to reallocate any newline transition properly.  */
+      realloc_trans_if_necessary (d);
+    }
+
+  /* If we are a searching matcher, the default transition is to a state
+     containing the positions of state 0, otherwise the default transition
+     is to fail miserably.  */
+  else if (d->searchflag)
+    {
+      state_newline = 0;
+      state_letter = d->min_trcount - 1;
+      state = d->initstate_notbol;
+    }
+  else
+    {
+      state_newline = -1;
+      state_letter = -1;
+      state = -1;
+    }
+
+  /* Set the transitions for each character in the label.  */
+  for (int i = 0; i < NOTCHAR; i++)
+    if (tstbit (i, &label))
+      switch (d->syntax.sbit[i])
+        {
+        case CTX_NEWLINE:
+          trans[i] = state_newline;
+          break;
+        case CTX_LETTER:
+          trans[i] = state_letter;
+          break;
+        default:
+          trans[i] = state;
+          break;
+        }
+
+#ifdef DEBUG
+  fprintf (stderr, "trans table %td", s);
+  for (int i = 0; i < NOTCHAR; ++i)
+    {
+      if (!(i & 0xf))
+        fprintf (stderr, "\n");
+      fprintf (stderr, " %2td", trans[i]);
+    }
+  fprintf (stderr, "\n");
+#endif
+
+  free (group.elems);
+  free (follows.elems);
+  free (tmp.elems);
+
+  /* Keep the newline transition in a special place so we can use it as
+     a sentinel.  */
+  if (tstbit (d->syntax.eolbyte, &label))
+    {
+      d->newlines[s] = trans[d->syntax.eolbyte];
+      trans[d->syntax.eolbyte] = -1;
+    }
+
+  return trans[uc];
+}
+
+/* Multibyte character handling sub-routines for dfaexec.  */
+
+/* Consume a single byte and transit state from 's' to '*next_state'.
+   This function is almost same as the state transition routin in dfaexec.
+   But state transition is done just once, otherwise matching succeed or
+   reach the end of the buffer.  */
+static state_num
+transit_state_singlebyte (struct dfa *d, state_num s, unsigned char const **pp)
+{
+  state_num *t;
+
+  if (d->trans[s])
+    t = d->trans[s];
+  else if (d->fails[s])
+    t = d->fails[s];
+  else
+    {
+      build_state (s, d, **pp);
+      if (d->trans[s])
+        t = d->trans[s];
+      else
+        {
+          t = d->fails[s];
+          assert (t);
+        }
+    }
+
+  if (t[**pp] == -2)
+    build_state (s, d, **pp);
+
+  return t[*(*pp)++];
+}
+
+/* Transit state from s, then return new state and update the pointer of
+   the buffer.  This function is for a period operator which can match a
+   multi-byte character.  */
+static state_num
+transit_state (struct dfa *d, state_num s, unsigned char const **pp,
+               unsigned char const *end)
+{
+  wint_t wc;
+
+  int mbclen = mbs_to_wchar (&wc, (char const *) *pp, end - *pp, d);
+
+  /* This state has some operators which can match a multibyte character.  */
+  d->mb_follows.nelem = 0;
+
+  /* Calculate the state which can be reached from the state 's' by
+     consuming 'mbclen' single bytes from the buffer.  */
+  state_num s1 = s;
+  int mbci;
+  for (mbci = 0; mbci < mbclen && (mbci == 0 || d->min_trcount <= s); mbci++)
+    s = transit_state_singlebyte (d, s, pp);
+  *pp += mbclen - mbci;
+
+  if (wc == WEOF)
+    {
+      /* It is an invalid character, so ANYCHAR is not accepted.  */
+      return s;
+    }
+
+  /* If all positions which have ANYCHAR do not depend on the context
+     of the next character, calculate the next state with
+     pre-calculated follows and cache the result.  */
+  if (d->states[s1].mb_trindex < 0)
+    {
+      if (MAX_TRCOUNT <= d->mb_trcount)
+        {
+          state_num s3;
+          for (s3 = -1; s3 < d->tralloc; s3++)
+            {
+              free (d->mb_trans[s3]);
+              d->mb_trans[s3] = NULL;
+            }
+
+          for (state_num i = 0; i < d->sindex; i++)
+            d->states[i].mb_trindex = -1;
+          d->mb_trcount = 0;
+        }
+      d->states[s1].mb_trindex = d->mb_trcount++;
+    }
+
+  if (! d->mb_trans[s])
+    {
+      enum { TRANSPTR_SIZE = sizeof *d->mb_trans[s] };
+      enum { TRANSALLOC_SIZE = MAX_TRCOUNT * TRANSPTR_SIZE };
+      d->mb_trans[s] = xmalloc (TRANSALLOC_SIZE);
+      for (int i = 0; i < MAX_TRCOUNT; i++)
+        d->mb_trans[s][i] = -1;
+    }
+  else if (d->mb_trans[s][d->states[s1].mb_trindex] >= 0)
+    return d->mb_trans[s][d->states[s1].mb_trindex];
+
+  if (s == -1)
+    copy (&d->states[s1].mbps, &d->mb_follows);
+  else
+    merge (&d->states[s1].mbps, &d->states[s].elems, &d->mb_follows);
+
+  int separate_contexts = state_separate_contexts (d, &d->mb_follows);
+  state_num s2 = state_index (d, &d->mb_follows, separate_contexts ^ CTX_ANY);
+  realloc_trans_if_necessary (d);
+
+  d->mb_trans[s][d->states[s1].mb_trindex] = s2;
+
+  return s2;
+}
+
+/* The initial state may encounter a byte which is not a single byte character
+   nor the first byte of a multibyte character.  But it is incorrect for the
+   initial state to accept such a byte.  For example, in Shift JIS the regular
+   expression "\\" accepts the codepoint 0x5c, but should not accept the second
+   byte of the codepoint 0x815c.  Then the initial state must skip the bytes
+   that are not a single byte character nor the first byte of a multibyte
+   character.
+
+   Given DFA state d, use mbs_to_wchar to advance MBP until it reaches
+   or exceeds P, and return the advanced MBP.  If WCP is non-NULL and
+   the result is greater than P, set *WCP to the final wide character
+   processed, or to WEOF if no wide character is processed.  Otherwise,
+   if WCP is non-NULL, *WCP may or may not be updated.
+
+   Both P and MBP must be no larger than END.  */
+static unsigned char const *
+skip_remains_mb (struct dfa *d, unsigned char const *p,
+                 unsigned char const *mbp, char const *end)
+{
+  if (d->syntax.never_trail[*p])
+    return p;
+  while (mbp < p)
+    {
+      wint_t wc;
+      mbp += mbs_to_wchar (&wc, (char const *) mbp,
+                           end - (char const *) mbp, d);
+    }
+  return mbp;
+}
+
+/* Search through a buffer looking for a match to the struct dfa *D.
+   Find the first occurrence of a string matching the regexp in the
+   buffer, and the shortest possible version thereof.  Return a pointer to
+   the first character after the match, or NULL if none is found.  BEGIN
+   points to the beginning of the buffer, and END points to the first byte
+   after its end.  Note however that we store a sentinel byte (usually
+   newline) in *END, so the actual buffer must be one byte longer.
+   When ALLOW_NL, newlines may appear in the matching string.
+   If COUNT is non-NULL, increment *COUNT once for each newline processed.
+   If MULTIBYTE, the input consists of multibyte characters and/or
+   encoding-error bytes.  Otherwise, it consists of single-byte characters.
+   Here is the list of features that make this DFA matcher punt:
+    - [M-N] range in non-simple locale: regex is up to 25% faster on [a-z]
+    - [^...] in non-simple locale
+    - [[=foo=]] or [[.foo.]]
+    - [[:alpha:]] etc. in multibyte locale (except [[:digit:]] works OK)
+    - back-reference: (.)\1
+    - word-delimiter in multibyte locale: \<, \>, \b, \B
+   See struct localeinfo.simple for the definition of "simple locale".  */
+
+static inline char *
+dfaexec_main (struct dfa *d, char const *begin, char *end, bool allow_nl,
+              ptrdiff_t *count, bool multibyte)
+{
+  if (MAX_TRCOUNT <= d->sindex)
+    {
+      for (state_num s = d->min_trcount; s < d->sindex; s++)
+        {
+          free (d->states[s].elems.elems);
+          free (d->states[s].mbps.elems);
+        }
+      d->sindex = d->min_trcount;
+
+      if (d->trans)
+        {
+          for (state_num s = 0; s < d->tralloc; s++)
+            {
+              free (d->trans[s]);
+              free (d->fails[s]);
+              d->trans[s] = d->fails[s] = NULL;
+            }
+          d->trcount = 0;
+        }
+
+      if (d->localeinfo.multibyte && d->mb_trans)
+        {
+          for (state_num s = -1; s < d->tralloc; s++)
+            {
+              free (d->mb_trans[s]);
+              d->mb_trans[s] = NULL;
+            }
+          for (state_num s = 0; s < d->min_trcount; s++)
+            d->states[s].mb_trindex = -1;
+          d->mb_trcount = 0;
+        }
+    }
+
+  if (!d->tralloc)
+    realloc_trans_if_necessary (d);
+
+  /* Current state.  */
+  state_num s = 0, s1 = 0;
+
+  /* Current input character.  */
+  unsigned char const *p = (unsigned char const *) begin;
+  unsigned char const *mbp = p;
+
+  /* Copy of d->trans so it can be optimized into a register.  */
+  state_num **trans = d->trans;
+  unsigned char eol = d->syntax.eolbyte;  /* Likewise for eolbyte.  */
+  unsigned char saved_end = *(unsigned char *) end;
+  *end = eol;
+
+  if (multibyte)
+    {
+      memset (&d->mbs, 0, sizeof d->mbs);
+      if (d->mb_follows.alloc == 0)
+        alloc_position_set (&d->mb_follows, d->nleaves);
+    }
+
+  idx_t nlcount = 0;
+  for (;;)
+    {
+      state_num *t;
+      while ((t = trans[s]) != NULL)
+        {
+          if (s < d->min_trcount)
+            {
+              if (!multibyte || d->states[s].mbps.nelem == 0)
+                {
+                  while (t[*p] == s)
+                    p++;
+                }
+              if (multibyte)
+                p = mbp = skip_remains_mb (d, p, mbp, end);
+            }
+
+          if (multibyte)
+            {
+              s1 = s;
+
+              if (d->states[s].mbps.nelem == 0
+                  || d->localeinfo.sbctowc[*p] != WEOF || (char *) p >= end)
+                {
+                  /* If an input character does not match ANYCHAR, do it
+                     like a single-byte character.  */
+                  s = t[*p++];
+                }
+              else
+                {
+                  s = transit_state (d, s, &p, (unsigned char *) end);
+                  mbp = p;
+                  trans = d->trans;
+                }
+            }
+          else
+            {
+              s1 = t[*p++];
+              t = trans[s1];
+              if (! t)
+                {
+                  state_num tmp = s;
+                  s = s1;
+                  s1 = tmp;     /* swap */
+                  break;
+                }
+              if (s < d->min_trcount)
+                {
+                  while (t[*p] == s1)
+                    p++;
+                }
+              s = t[*p++];
+            }
+        }
+
+      if (s < 0)
+        {
+          if (s == -2)
+            {
+              s = build_state (s1, d, p[-1]);
+              trans = d->trans;
+            }
+          else if ((char *) p <= end && p[-1] == eol && 0 <= d->newlines[s1])
+            {
+              /* The previous character was a newline.  Count it, and skip
+                 checking of multibyte character boundary until here.  */
+              nlcount++;
+              mbp = p;
+
+              s = (allow_nl ? d->newlines[s1]
+                   : d->syntax.sbit[eol] == CTX_NEWLINE ? 0
+                   : d->syntax.sbit[eol] == CTX_LETTER ? d->min_trcount - 1
+                   : d->initstate_notbol);
+            }
+          else
+            {
+              p = NULL;
+              goto done;
+            }
+        }
+      else if (d->fails[s])
+        {
+          if ((d->success[s] & d->syntax.sbit[*p])
+              || ((char *) p == end
+                  && accepts_in_context (d->states[s].context, CTX_NEWLINE, s,
+                                         d)))
+            goto done;
+
+          if (multibyte && s < d->min_trcount)
+            p = mbp = skip_remains_mb (d, p, mbp, end);
+
+          s1 = s;
+          if (!multibyte || d->states[s].mbps.nelem == 0
+              || d->localeinfo.sbctowc[*p] != WEOF || (char *) p >= end)
+            {
+              /* If a input character does not match ANYCHAR, do it
+                 like a single-byte character.  */
+              s = d->fails[s][*p++];
+            }
+          else
+            {
+              s = transit_state (d, s, &p, (unsigned char *) end);
+              mbp = p;
+              trans = d->trans;
+            }
+        }
+      else
+        {
+          build_state (s, d, p[0]);
+          trans = d->trans;
+        }
+    }
+
+ done:
+  if (count)
+    *count += nlcount;
+  *end = saved_end;
+  return (char *) p;
+}
+
+/* Specialized versions of dfaexec for multibyte and single-byte cases.
+   This is for performance, as dfaexec_main is an inline function.  */
+
+static char *
+dfaexec_mb (struct dfa *d, char const *begin, char *end,
+            bool allow_nl, ptrdiff_t *count, bool *backref)
+{
+  return dfaexec_main (d, begin, end, allow_nl, count, true);
+}
+
+static char *
+dfaexec_sb (struct dfa *d, char const *begin, char *end,
+            bool allow_nl, ptrdiff_t *count, bool *backref)
+{
+  return dfaexec_main (d, begin, end, allow_nl, count, false);
+}
+
+/* Always set *BACKREF and return BEGIN.  Use this wrapper for
+   any regexp that uses a construct not supported by this code.  */
+static char *
+dfaexec_noop (struct dfa *d, char const *begin, char *end,
+              bool allow_nl, ptrdiff_t *count, bool *backref)
+{
+  *backref = true;
+  return (char *) begin;
+}
+
+/* Like dfaexec_main (D, BEGIN, END, ALLOW_NL, COUNT, D->localeinfo.multibyte),
+   but faster and set *BACKREF if the DFA code does not support this
+   regexp usage.  */
+
+char *
+dfaexec (struct dfa *d, char const *begin, char *end,
+         bool allow_nl, ptrdiff_t *count, bool *backref)
+{
+  return d->dfaexec (d, begin, end, allow_nl, count, backref);
+}
+
+struct dfa *
+dfasuperset (struct dfa const *d)
+{
+  return d->superset;
+}
+
+bool
+dfaisfast (struct dfa const *d)
+{
+  return d->fast;
+}
+
+static void
+free_mbdata (struct dfa *d)
+{
+  free (d->multibyte_prop);
+  free (d->lex.brack.chars);
+  free (d->mb_follows.elems);
+
+  if (d->mb_trans)
+    {
+      state_num s;
+      for (s = -1; s < d->tralloc; s++)
+        free (d->mb_trans[s]);
+      free (d->mb_trans - 2);
+    }
+}
+
+/* Return true if every construct in D is supported by this DFA matcher.  */
+bool
+dfasupported (struct dfa const *d)
+{
+  for (idx_t i = 0; i < d->tindex; i++)
+    {
+      switch (d->tokens[i])
+        {
+        case BEGWORD:
+        case ENDWORD:
+        case LIMWORD:
+        case NOTLIMWORD:
+          if (!d->localeinfo.multibyte)
+            continue;
+          FALLTHROUGH;
+        case BACKREF:
+        case MBCSET:
+          return false;
+        }
+    }
+  return true;
+}
+
+/* Disable use of the superset DFA if it is not likely to help
+   performance.  */
+static void
+maybe_disable_superset_dfa (struct dfa *d)
+{
+  if (!d->localeinfo.using_utf8)
+    return;
+
+  bool have_backref = false;
+  for (idx_t i = 0; i < d->tindex; i++)
+    {
+      switch (d->tokens[i])
+        {
+        case ANYCHAR:
+          /* Lowered.  */
+          abort ();
+        case BACKREF:
+          have_backref = true;
+          break;
+        case MBCSET:
+          /* Requires multi-byte algorithm.  */
+          return;
+        default:
+          break;
+        }
+    }
+
+  if (!have_backref && d->superset)
+    {
+      /* The superset DFA is not likely to be much faster, so remove it.  */
+      dfafree (d->superset);
+      free (d->superset);
+      d->superset = NULL;
+    }
+
+  free_mbdata (d);
+  d->localeinfo.multibyte = false;
+  d->dfaexec = dfaexec_sb;
+  d->fast = true;
+}
+
+static void
+dfassbuild (struct dfa *d)
+{
+  struct dfa *sup = dfaalloc ();
+
+  *sup = *d;
+  sup->localeinfo.multibyte = false;
+  sup->dfaexec = dfaexec_sb;
+  sup->multibyte_prop = NULL;
+  sup->superset = NULL;
+  sup->states = NULL;
+  sup->sindex = 0;
+  sup->constraints = NULL;
+  sup->separates = NULL;
+  sup->follows = NULL;
+  sup->tralloc = 0;
+  sup->trans = NULL;
+  sup->fails = NULL;
+  sup->success = NULL;
+  sup->newlines = NULL;
+
+  sup->charclasses = xnmalloc (sup->calloc, sizeof *sup->charclasses);
+  if (d->cindex)
+    {
+      memcpy (sup->charclasses, d->charclasses,
+              d->cindex * sizeof *sup->charclasses);
+    }
+
+  sup->tokens = xnmalloc (d->tindex, 2 * sizeof *sup->tokens);
+  sup->talloc = d->tindex * 2;
+
+  bool have_achar = false;
+  bool have_nchar = false;
+  idx_t j;
+  for (idx_t i = j = 0; i < d->tindex; i++)
+    {
+      switch (d->tokens[i])
+        {
+        case ANYCHAR:
+        case MBCSET:
+        case BACKREF:
+          {
+            charclass ccl;
+            fillset (&ccl);
+            sup->tokens[j++] = CSET + charclass_index (sup, &ccl);
+            sup->tokens[j++] = STAR;
+            if (d->tokens[i + 1] == QMARK || d->tokens[i + 1] == STAR
+                || d->tokens[i + 1] == PLUS)
+              i++;
+            have_achar = true;
+          }
+          break;
+        case BEGWORD:
+        case ENDWORD:
+        case LIMWORD:
+        case NOTLIMWORD:
+          if (d->localeinfo.multibyte)
+            {
+              /* These constraints aren't supported in a multibyte locale.
+                 Ignore them in the superset DFA.  */
+              sup->tokens[j++] = EMPTY;
+              break;
+            }
+          FALLTHROUGH;
+        default:
+          sup->tokens[j++] = d->tokens[i];
+          if ((0 <= d->tokens[i] && d->tokens[i] < NOTCHAR)
+              || d->tokens[i] >= CSET)
+            have_nchar = true;
+          break;
+        }
+    }
+  sup->tindex = j;
+
+  if (have_nchar && (have_achar || d->localeinfo.multibyte))
+    d->superset = sup;
+  else
+    {
+      dfafree (sup);
+      free (sup);
+    }
+}
+
+/* Parse a string S of length LEN into D (but skip this step if S is null).
+   Then analyze D and build a matcher for it.
+   SEARCHFLAG says whether to build a searching or an exact matcher.  */
+void
+dfacomp (char const *s, idx_t len, struct dfa *d, bool searchflag)
+{
+  if (s != NULL)
+    dfaparse (s, len, d);
+
+  dfassbuild (d);
+
+  if (dfasupported (d))
+    {
+      maybe_disable_superset_dfa (d);
+      dfaanalyze (d, searchflag);
+    }
+  else
+    {
+      d->dfaexec = dfaexec_noop;
+    }
+
+  if (d->superset)
+    {
+      d->fast = true;
+      dfaanalyze (d->superset, searchflag);
+    }
+}
+
+/* Free the storage held by the components of a dfa.  */
+void
+dfafree (struct dfa *d)
+{
+  free (d->charclasses);
+  free (d->tokens);
+
+  if (d->localeinfo.multibyte)
+    free_mbdata (d);
+
+  free (d->constraints);
+  free (d->separates);
+
+  for (idx_t i = 0; i < d->sindex; i++)
+    {
+      free (d->states[i].elems.elems);
+      free (d->states[i].mbps.elems);
+    }
+  free (d->states);
+
+  if (d->follows)
+    {
+      for (idx_t i = 0; i < d->tindex; i++)
+        free (d->follows[i].elems);
+      free (d->follows);
+    }
+
+  if (d->trans)
+    {
+      for (idx_t i = 0; i < d->tralloc; i++)
+        {
+          free (d->trans[i]);
+          free (d->fails[i]);
+        }
+
+      free (d->trans - 2);
+      free (d->fails);
+      free (d->newlines);
+      free (d->success);
+    }
+
+  if (d->superset)
+    {
+      dfafree (d->superset);
+      free (d->superset);
+    }
+}
+
+/* Having found the postfix representation of the regular expression,
+   try to find a long sequence of characters that must appear in any line
+   containing the r.e.
+   Finding a "longest" sequence is beyond the scope here;
+   we take an easy way out and hope for the best.
+   (Take "(ab|a)b"--please.)
+
+   We do a bottom-up calculation of sequences of characters that must appear
+   in matches of r.e.'s represented by trees rooted at the nodes of the postfix
+   representation:
+        sequences that must appear at the left of the match ("left")
+        sequences that must appear at the right of the match ("right")
+        lists of sequences that must appear somewhere in the match ("in")
+        sequences that must constitute the match ("is")
+
+   When we get to the root of the tree, we use one of the longest of its
+   calculated "in" sequences as our answer.
+
+   The sequences calculated for the various types of node (in pseudo ANSI c)
+   are shown below.  "p" is the operand of unary operators (and the left-hand
+   operand of binary operators); "q" is the right-hand operand of binary
+   operators.
+
+   "ZERO" means "a zero-length sequence" below.
+
+        Type	left		right		is		in
+        ----	----		-----		--		--
+        char c	# c		# c		# c		# c
+
+        ANYCHAR	ZERO		ZERO		ZERO		ZERO
+
+        MBCSET	ZERO		ZERO		ZERO		ZERO
+
+        CSET	ZERO		ZERO		ZERO		ZERO
+
+        STAR	ZERO		ZERO		ZERO		ZERO
+
+        QMARK	ZERO		ZERO		ZERO		ZERO
+
+        PLUS	p->left		p->right	ZERO		p->in
+
+        CAT	(p->is==ZERO)?	(q->is==ZERO)?	(p->is!=ZERO &&	p->in plus
+                p->left :	q->right :	q->is!=ZERO) ?	q->in plus
+                p->is##q->left	p->right##q->is	p->is##q->is : p->right##q->left
+                                                ZERO
+
+        OR	longest common	longest common	(do p->is and substrings common
+                leading		trailing	to q->is have same p->in and
+                (sub)sequence	(sub)sequence	q->in length and content) ?
+                of p->left	of p->right
+                and q->left	and q->right	p->is : NULL
+
+   If there's anything else we recognize in the tree, all four sequences get set
+   to zero-length sequences.  If there's something we don't recognize in the
+   tree, we just return a zero-length sequence.
+
+   Break ties in favor of infrequent letters (choosing 'zzz' in preference to
+   'aaa')?
+
+   And ... is it here or someplace that we might ponder "optimizations" such as
+        egrep 'psi|epsilon'	->	egrep 'psi'
+        egrep 'pepsi|epsilon'	->	egrep 'epsi'
+                                        (Yes, we now find "epsi" as a "string
+                                        that must occur", but we might also
+                                        simplify the *entire* r.e. being sought)
+        grep '[c]'		->	grep 'c'
+        grep '(ab|a)b'		->	grep 'ab'
+        grep 'ab*'		->	grep 'a'
+        grep 'a*b'		->	grep 'b'
+
+   There are several issues:
+
+   Is optimization easy (enough)?
+
+   Does optimization actually accomplish anything,
+   or is the automaton you get from "psi|epsilon" (for example)
+   the same as the one you get from "psi" (for example)?
+
+   Are optimizable r.e.'s likely to be used in real-life situations
+   (something like 'ab*' is probably unlikely; something like is
+   'psi|epsilon' is likelier)?  */
+
+static char *
+icatalloc (char *old, char const *new)
+{
+  idx_t newsize = strlen (new);
+  if (newsize == 0)
+    return old;
+  idx_t oldsize = strlen (old);
+  char *result = xirealloc (old, oldsize + newsize + 1);
+  memcpy (result + oldsize, new, newsize + 1);
+  return result;
+}
+
+static void
+freelist (char **cpp)
+{
+  while (*cpp)
+    free (*cpp++);
+}
+
+static char **
+enlistnew (char **cpp, char *new)
+{
+  /* Is there already something in the list that's new (or longer)?  */
+  idx_t i;
+  for (i = 0; cpp[i] != NULL; i++)
+    if (strstr (cpp[i], new) != NULL)
+      {
+        free (new);
+        return cpp;
+      }
+  /* Eliminate any obsoleted strings.  */
+  for (idx_t j = 0; cpp[j] != NULL; )
+    if (strstr (new, cpp[j]) == NULL)
+      ++j;
+    else
+      {
+        free (cpp[j]);
+        if (--i == j)
+          break;
+        cpp[j] = cpp[i];
+        cpp[i] = NULL;
+      }
+  /* Add the new string.  */
+  cpp = xreallocarray (cpp, i + 2, sizeof *cpp);
+  cpp[i] = new;
+  cpp[i + 1] = NULL;
+  return cpp;
+}
+
+static char **
+enlist (char **cpp, char const *str, idx_t len)
+{
+  return enlistnew (cpp, ximemdup0 (str, len));
+}
+
+/* Given pointers to two strings, return a pointer to an allocated
+   list of their distinct common substrings.  */
+static char **
+comsubs (char *left, char const *right)
+{
+  char **cpp = xzalloc (sizeof *cpp);
+
+  for (char *lcp = left; *lcp != '\0'; lcp++)
+    {
+      idx_t len = 0;
+      char *rcp = strchr (right, *lcp);
+      while (rcp != NULL)
+        {
+          idx_t i;
+          for (i = 1; lcp[i] != '\0' && lcp[i] == rcp[i]; ++i)
+            continue;
+          if (i > len)
+            len = i;
+          rcp = strchr (rcp + 1, *lcp);
+        }
+      if (len != 0)
+        cpp = enlist (cpp, lcp, len);
+    }
+  return cpp;
+}
+
+static char **
+addlists (char **old, char **new)
+{
+  for (; *new; new++)
+    old = enlistnew (old, xstrdup (*new));
+  return old;
+}
+
+/* Given two lists of substrings, return a new list giving substrings
+   common to both.  */
+static char **
+inboth (char **left, char **right)
+{
+  char **both = xzalloc (sizeof *both);
+
+  for (idx_t lnum = 0; left[lnum] != NULL; lnum++)
+    {
+      for (idx_t rnum = 0; right[rnum] != NULL; rnum++)
+        {
+          char **temp = comsubs (left[lnum], right[rnum]);
+          both = addlists (both, temp);
+          freelist (temp);
+          free (temp);
+        }
+    }
+  return both;
+}
+
+typedef struct must must;
+
+struct must
+{
+  char **in;
+  char *left;
+  char *right;
+  char *is;
+  bool begline;
+  bool endline;
+  must *prev;
+};
+
+static must *
+allocmust (must *mp, idx_t size)
+{
+  must *new_mp = xmalloc (sizeof *new_mp);
+  new_mp->in = xzalloc (sizeof *new_mp->in);
+  new_mp->left = xizalloc (size);
+  new_mp->right = xizalloc (size);
+  new_mp->is = xizalloc (size);
+  new_mp->begline = false;
+  new_mp->endline = false;
+  new_mp->prev = mp;
+  return new_mp;
+}
+
+static void
+resetmust (must *mp)
+{
+  freelist (mp->in);
+  mp->in[0] = NULL;
+  mp->left[0] = mp->right[0] = mp->is[0] = '\0';
+  mp->begline = false;
+  mp->endline = false;
+}
+
+static void
+freemust (must *mp)
+{
+  freelist (mp->in);
+  free (mp->in);
+  free (mp->left);
+  free (mp->right);
+  free (mp->is);
+  free (mp);
+}
+
+struct dfamust *
+dfamust (struct dfa const *d)
+{
+  must *mp = NULL;
+  char const *result = "";
+  bool exact = false;
+  bool begline = false;
+  bool endline = false;
+  bool need_begline = false;
+  bool need_endline = false;
+  bool case_fold_unibyte = d->syntax.case_fold & !d->localeinfo.multibyte;
+
+  for (idx_t ri = 1; ri + 1 < d->tindex; ri++)
+    {
+      token t = d->tokens[ri];
+      switch (t)
+        {
+        case BEGLINE:
+          mp = allocmust (mp, 2);
+          mp->begline = true;
+          need_begline = true;
+          break;
+        case ENDLINE:
+          mp = allocmust (mp, 2);
+          mp->endline = true;
+          need_endline = true;
+          break;
+        case LPAREN:
+        case RPAREN:
+          assert (!"neither LPAREN nor RPAREN may appear here");
+
+        case EMPTY:
+        case BEGWORD:
+        case ENDWORD:
+        case LIMWORD:
+        case NOTLIMWORD:
+        case BACKREF:
+        case ANYCHAR:
+        case MBCSET:
+          mp = allocmust (mp, 2);
+          break;
+
+        case STAR:
+        case QMARK:
+          assume_nonnull (mp);
+          resetmust (mp);
+          break;
+
+        case OR:
+          {
+            char **new;
+            must *rmp = mp;
+            assume_nonnull (rmp);
+            must *lmp = mp = mp->prev;
+            assume_nonnull (lmp);
+            idx_t j, ln, rn, n;
+
+            /* Guaranteed to be.  Unlikely, but ...  */
+            if (streq (lmp->is, rmp->is))
+              {
+                lmp->begline &= rmp->begline;
+                lmp->endline &= rmp->endline;
+              }
+            else
+              {
+                lmp->is[0] = '\0';
+                lmp->begline = false;
+                lmp->endline = false;
+              }
+            /* Left side--easy */
+            idx_t i = 0;
+            while (lmp->left[i] != '\0' && lmp->left[i] == rmp->left[i])
+              ++i;
+            lmp->left[i] = '\0';
+            /* Right side */
+            ln = strlen (lmp->right);
+            rn = strlen (rmp->right);
+            n = ln;
+            if (n > rn)
+              n = rn;
+            for (i = 0; i < n; ++i)
+              if (lmp->right[ln - i - 1] != rmp->right[rn - i - 1])
+                break;
+            for (j = 0; j < i; ++j)
+              lmp->right[j] = lmp->right[(ln - i) + j];
+            lmp->right[j] = '\0';
+            new = inboth (lmp->in, rmp->in);
+            freelist (lmp->in);
+            free (lmp->in);
+            lmp->in = new;
+            freemust (rmp);
+          }
+          break;
+
+        case PLUS:
+          assume_nonnull (mp);
+          mp->is[0] = '\0';
+          break;
+
+        case END:
+          assume_nonnull (mp);
+          assert (!mp->prev);
+          for (idx_t i = 0; mp->in[i] != NULL; i++)
+            if (strlen (mp->in[i]) > strlen (result))
+              result = mp->in[i];
+          if (streq (result, mp->is))
+            {
+              if ((!need_begline || mp->begline) && (!need_endline
+                                                     || mp->endline))
+                exact = true;
+              begline = mp->begline;
+              endline = mp->endline;
+            }
+          goto done;
+
+        case CAT:
+          {
+            must *rmp = mp;
+            assume_nonnull (rmp);
+            must *lmp = mp = mp->prev;
+            assume_nonnull (lmp);
+
+            /* In.  Everything in left, plus everything in
+               right, plus concatenation of
+               left's right and right's left.  */
+            lmp->in = addlists (lmp->in, rmp->in);
+            if (lmp->right[0] != '\0' && rmp->left[0] != '\0')
+              {
+                idx_t lrlen = strlen (lmp->right);
+                idx_t rllen = strlen (rmp->left);
+                char *tp = ximalloc (lrlen + rllen + 1);
+                memcpy (tp + lrlen, rmp->left, rllen + 1);
+                memcpy (tp, lmp->right, lrlen);
+                lmp->in = enlistnew (lmp->in, tp);
+              }
+            /* Left-hand */
+            if (lmp->is[0] != '\0')
+              lmp->left = icatalloc (lmp->left, rmp->left);
+            /* Right-hand */
+            if (rmp->is[0] == '\0')
+              lmp->right[0] = '\0';
+            lmp->right = icatalloc (lmp->right, rmp->right);
+            /* Guaranteed to be */
+            if ((lmp->is[0] != '\0' || lmp->begline)
+                && (rmp->is[0] != '\0' || rmp->endline))
+              {
+                lmp->is = icatalloc (lmp->is, rmp->is);
+                lmp->endline = rmp->endline;
+              }
+            else
+              {
+                lmp->is[0] = '\0';
+                lmp->begline = false;
+                lmp->endline = false;
+              }
+            freemust (rmp);
+          }
+          break;
+
+        case '\0':
+          /* Not on *my* shift.  */
+          goto done;
+
+        default:
+          if (CSET <= t)
+            {
+              /* If T is a singleton, or if case-folding in a unibyte
+                 locale and T's members all case-fold to the same char,
+                 convert T to one of its members.  Otherwise, do
+                 nothing further with T.  */
+              charclass *ccl = &d->charclasses[t - CSET];
+              int j;
+              for (j = 0; j < NOTCHAR; j++)
+                if (tstbit (j, ccl))
+                  break;
+              if (! (j < NOTCHAR))
+                {
+                  mp = allocmust (mp, 2);
+                  break;
+                }
+              t = j;
+              while (++j < NOTCHAR)
+                if (tstbit (j, ccl)
+                    && ! (case_fold_unibyte
+                          && toupper (j) == toupper (t)))
+                  break;
+              if (j < NOTCHAR)
+                {
+                  mp = allocmust (mp, 2);
+                  break;
+                }
+            }
+
+          idx_t rj = ri + 2;
+          if (d->tokens[ri + 1] == CAT)
+            {
+              for (; rj < d->tindex - 1; rj += 2)
+                {
+                  if ((rj != ri && (d->tokens[rj] <= 0
+                                    || NOTCHAR <= d->tokens[rj]))
+                      || d->tokens[rj + 1] != CAT)
+                    break;
+                }
+            }
+          mp = allocmust (mp, ((rj - ri) >> 1) + 1);
+          mp->is[0] = mp->left[0] = mp->right[0]
+            = case_fold_unibyte ? toupper (t) : t;
+
+          idx_t i;
+          for (i = 1; ri + 2 < rj; i++)
+            {
+              ri += 2;
+              t = d->tokens[ri];
+              mp->is[i] = mp->left[i] = mp->right[i]
+                = case_fold_unibyte ? toupper (t) : t;
+            }
+          mp->is[i] = mp->left[i] = mp->right[i] = '\0';
+          mp->in = enlist (mp->in, mp->is, i);
+          break;
+        }
+    }
+ done:;
+
+  struct dfamust *dm = NULL;
+  if (*result)
+    {
+      dm = xmalloc (FLEXSIZEOF (struct dfamust, must, strlen (result) + 1));
+      dm->exact = exact;
+      dm->begline = begline;
+      dm->endline = endline;
+      strcpy (dm->must, result);
+    }
+
+  while (mp)
+    {
+      must *prev = mp->prev;
+      freemust (mp);
+      mp = prev;
+    }
+
+  return dm;
+}
+
+void
+dfamustfree (struct dfamust *dm)
+{
+  free (dm);
+}
+
+struct dfa *
+dfaalloc (void)
+{
+  return xmalloc (sizeof (struct dfa));
+}
+
+/* Initialize DFA.  */
+void
+dfasyntax (struct dfa *dfa, struct localeinfo const *linfo,
+           reg_syntax_t bits, int dfaopts)
+{
+  memset (dfa, 0, offsetof (struct dfa, dfaexec));
+  dfa->dfaexec = linfo->multibyte ? dfaexec_mb : dfaexec_sb;
+  dfa->localeinfo = *linfo;
+
+  dfa->fast = !dfa->localeinfo.multibyte;
+
+  dfa->canychar = -1;
+  dfa->syntax.syntax_bits_set = true;
+  dfa->syntax.case_fold = (bits & RE_ICASE) != 0;
+  dfa->syntax.anchor = (dfaopts & DFA_ANCHOR) != 0;
+  dfa->syntax.eolbyte = dfaopts & DFA_EOL_NUL ? '\0' : '\n';
+  dfa->syntax.syntax_bits = bits;
+
+  for (int i = CHAR_MIN; i <= CHAR_MAX; ++i)
+    {
+      unsigned char uc = i;
+
+      dfa->syntax.sbit[uc] = char_context (dfa, uc);
+      switch (dfa->syntax.sbit[uc])
+        {
+        case CTX_LETTER:
+          setbit (uc, &dfa->syntax.letters);
+          break;
+        case CTX_NEWLINE:
+          setbit (uc, &dfa->syntax.newline);
+          break;
+        }
+
+      /* POSIX requires that the five bytes in "\n\r./" (including the
+         terminating NUL) cannot occur inside a multibyte character.  */
+      dfa->syntax.never_trail[uc] = (dfa->localeinfo.using_utf8
+                                     ? (uc & 0xc0) != 0x80
+                                     : strchr ("\n\r./", uc) != NULL);
+    }
+}
+
+/* Initialize TO by copying FROM's syntax settings.  */
+void
+dfacopysyntax (struct dfa *to, struct dfa const *from)
+{
+  memset (to, 0, offsetof (struct dfa, syntax));
+  to->canychar = -1;
+  to->fast = from->fast;
+  to->syntax = from->syntax;
+  to->dfaexec = from->dfaexec;
+  to->localeinfo = from->localeinfo;
+}
+
+/* vim:set shiftwidth=2: */
diff --git a/src/grep/lib/dfa.h b/src/grep/lib/dfa.h
new file mode 100644
index 0000000..edc39dc
--- /dev/null
+++ b/src/grep/lib/dfa.h
@@ -0,0 +1,154 @@
+/* dfa.h - declarations for GNU deterministic regexp compiler
+   Copyright (C) 1988, 1998, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc.,
+   51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA */
+
+/* Written June, 1988 by Mike Haertel */
+
+#ifndef DFA_H_
+#define DFA_H_
+
+#include <regex.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct localeinfo; /* See localeinfo.h.  */
+
+/* Element of a list of strings, at least one of which is known to
+   appear in any R.E. matching the DFA. */
+struct dfamust
+{
+  bool exact;
+  bool begline;
+  bool endline;
+  char must[FLEXIBLE_ARRAY_MEMBER];
+};
+
+/* The dfa structure. It is completely opaque. */
+struct dfa;
+
+/* Needed when Gnulib is not used.  */
+#ifndef _GL_ATTRIBUTE_MALLOC
+# define _GL_ATTRIBUTE_MALLOC
+# define _GL_ATTRIBUTE_DEALLOC_FREE
+# define _GL_ATTRIBUTE_RETURNS_NONNULL
+#endif
+
+/* Entry points. */
+
+/* Allocate a struct dfa.  The struct dfa is completely opaque.
+   It should be initialized via dfasyntax or dfacopysyntax before other use.
+   The returned pointer should be passed directly to free() after
+   calling dfafree() on it. */
+extern struct dfa *dfaalloc (void)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+
+/* DFA options that can be ORed together, for dfasyntax's 4th arg.  */
+enum
+  {
+    /* ^ and $ match only the start and end of data, and do not match
+       end-of-line within data.  This is always false for grep, but
+       possibly true for other apps.  */
+    DFA_ANCHOR = 1 << 0,
+
+    /* '\0' in data is end-of-line, instead of the traditional '\n'.  */
+    DFA_EOL_NUL = 1 << 1
+  };
+
+/* Initialize or reinitialize a DFA.  The arguments are:
+   1. The DFA to operate on.
+   2. Information about the current locale.
+   3. Syntax bits described in regex.h.
+   4. Additional DFA options described above.  */
+extern void dfasyntax (struct dfa *, struct localeinfo const *,
+                       reg_syntax_t, int);
+
+/* Initialize or reinitialize a DFA from an already-initialized DFA.  */
+extern void dfacopysyntax (struct dfa *, struct dfa const *);
+
+/* Parse the given string of given length into the given struct dfa.  */
+extern void dfaparse (char const *, ptrdiff_t, struct dfa *);
+
+struct dfamust;
+
+/* Free the storage held by the components of a struct dfamust. */
+extern void dfamustfree (struct dfamust *);
+
+/* Allocate and return a struct dfamust from a struct dfa that was
+   initialized by dfaparse and not yet given to dfacomp.  */
+extern struct dfamust *dfamust (struct dfa const *)
+  _GL_ATTRIBUTE_DEALLOC (dfamustfree, 1);
+
+/* Compile the given string of the given length into the given struct dfa.
+   The last argument says whether to build a searching or an exact matcher.
+   A null first argument means the struct dfa has already been
+   initialized by dfaparse; the second argument is ignored.  */
+extern void dfacomp (char const *, ptrdiff_t, struct dfa *, bool);
+
+/* Search through a buffer looking for a match to the given struct dfa.
+   Find the first occurrence of a string matching the regexp in the
+   buffer, and the shortest possible version thereof.  Return a pointer to
+   the first character after the match, or NULL if none is found.  BEGIN
+   points to the beginning of the buffer, and END points to the first byte
+   after its end.  Note however that we store a sentinel byte (usually
+   newline) in *END, so the actual buffer must be one byte longer.
+   When ALLOW_NL is true, newlines may appear in the matching string.
+   If COUNT is non-NULL, increment *COUNT once for each newline processed.
+   Finally, if BACKREF is non-NULL set *BACKREF to indicate whether we
+   encountered a back-reference.  The caller can use this to decide
+   whether to fall back on a backtracking matcher.  */
+extern char *dfaexec (struct dfa *d, char const *begin, char *end,
+                      bool allow_nl, ptrdiff_t *count, bool *backref);
+
+/* Return a superset for D.  The superset matches everything that D
+   matches, along with some other strings (though the latter should be
+   rare, for efficiency reasons).  Return a null pointer if no useful
+   superset is available.  */
+extern struct dfa *dfasuperset (struct dfa const *d) _GL_ATTRIBUTE_PURE;
+
+/* The DFA is likely to be fast.  */
+extern bool dfaisfast (struct dfa const *) _GL_ATTRIBUTE_PURE;
+
+/* Return true if every construct in D is supported by this DFA matcher.  */
+extern bool dfasupported (struct dfa const *) _GL_ATTRIBUTE_PURE;
+
+/* Free the storage held by the components of a struct dfa. */
+extern void dfafree (struct dfa *);
+
+/* Error handling. */
+
+/* dfawarn() is called by the regexp routines whenever a regex is compiled
+   that likely doesn't do what the user wanted.  It takes a single
+   argument, a NUL-terminated string describing the situation.  The user
+   must supply a dfawarn.  */
+extern void dfawarn (const char *);
+
+/* dfaerror() is called by the regexp routines whenever an error occurs.  It
+   takes a single argument, a NUL-terminated string describing the error.
+   The user must supply a dfaerror.  */
+extern _Noreturn void dfaerror (const char *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* dfa.h */
diff --git a/src/grep/lib/dirent-private.h b/src/grep/lib/dirent-private.h
new file mode 100644
index 0000000..81f48d7
--- /dev/null
+++ b/src/grep/lib/dirent-private.h
@@ -0,0 +1,44 @@
+/* Private details of the DIR type.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _DIRENT_PRIVATE_H
+#define _DIRENT_PRIVATE_H 1
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+/* Don't assume that UNICODE is not defined.  */
+#undef WIN32_FIND_DATA
+#define WIN32_FIND_DATA WIN32_FIND_DATAA
+
+struct gl_directory
+{
+  /* Status, or error code to produce in next readdir() call.
+     -2 means the end of the directory is already reached,
+     -1 means the entry was already filled by FindFirstFile,
+     0 means the entry needs to be filled using FindNextFile.
+     A positive value is an error code.  */
+  int status;
+  /* Handle, reading the directory, at current position.  */
+  HANDLE current;
+  /* Found directory entry.  */
+  WIN32_FIND_DATA entry;
+  /* Argument to pass to FindFirstFile.  It consists of the absolutized
+     directory name, followed by a directory separator and the wildcards.  */
+  char dir_name_mask[1];
+};
+
+#endif /* _DIRENT_PRIVATE_H */
diff --git a/src/grep/lib/dirent.in.h b/src/grep/lib/dirent.in.h
new file mode 100644
index 0000000..5775edf
--- /dev/null
+++ b/src/grep/lib/dirent.in.h
@@ -0,0 +1,299 @@
+/* A GNU-like <dirent.h>.
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _@GUARD_PREFIX@_DIRENT_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* The include_next requires a split double-inclusion guard.  */
+#if @HAVE_DIRENT_H@
+# @INCLUDE_NEXT@ @NEXT_DIRENT_H@
+#endif
+
+#ifndef _@GUARD_PREFIX@_DIRENT_H
+#define _@GUARD_PREFIX@_DIRENT_H
+
+/* Get ino_t.  Needed on some systems, including glibc 2.8.  */
+#include <sys/types.h>
+
+#if !@HAVE_DIRENT_H@
+/* Define types DIR and 'struct dirent'.  */
+# if !GNULIB_defined_struct_dirent
+struct dirent
+{
+  char d_type;
+  char d_name[1];
+};
+/* Possible values for 'd_type'.  */
+#  define DT_UNKNOWN 0
+#  define DT_FIFO    1          /* FIFO */
+#  define DT_CHR     2          /* character device */
+#  define DT_DIR     4          /* directory */
+#  define DT_BLK     6          /* block device */
+#  define DT_REG     8          /* regular file */
+#  define DT_LNK    10          /* symbolic link */
+#  define DT_SOCK   12          /* socket */
+#  define DT_WHT    14          /* whiteout */
+typedef struct gl_directory DIR;
+#  define GNULIB_defined_struct_dirent 1
+# endif
+#endif
+
+/* The __attribute__ feature is available in gcc versions 2.5 and later.
+   The attribute __pure__ was added in gcc 2.96.  */
+#ifndef _GL_ATTRIBUTE_PURE
+# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || defined __clang__
+#  define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+# else
+#  define _GL_ATTRIBUTE_PURE /* empty */
+# endif
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
+/* Declare overridden functions.  */
+
+#if @GNULIB_CLOSEDIR@
+# if @REPLACE_CLOSEDIR@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef closedir
+#   define closedir rpl_closedir
+#   define GNULIB_defined_closedir 1
+#  endif
+_GL_FUNCDECL_RPL (closedir, int, (DIR *dirp) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (closedir, int, (DIR *dirp));
+# else
+#  if !@HAVE_CLOSEDIR@
+_GL_FUNCDECL_SYS (closedir, int, (DIR *dirp) _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (closedir, int, (DIR *dirp));
+# endif
+_GL_CXXALIASWARN (closedir);
+#elif defined GNULIB_POSIXCHECK
+# undef closedir
+# if HAVE_RAW_DECL_CLOSEDIR
+_GL_WARN_ON_USE (closedir, "closedir is not portable - "
+                 "use gnulib module closedir for portability");
+# endif
+#endif
+
+#if @GNULIB_OPENDIR@
+# if @REPLACE_OPENDIR@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef opendir
+#   define opendir rpl_opendir
+#   define GNULIB_defined_opendir 1
+#  endif
+_GL_FUNCDECL_RPL (opendir, DIR *,
+                  (const char *dir_name)
+                  _GL_ARG_NONNULL ((1))
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (closedir, 1));
+_GL_CXXALIAS_RPL (opendir, DIR *, (const char *dir_name));
+# else
+#  if !@HAVE_OPENDIR@ || __GNUC__ >= 11
+_GL_FUNCDECL_SYS (opendir, DIR *,
+                  (const char *dir_name)
+                  _GL_ARG_NONNULL ((1))
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (closedir, 1));
+#  endif
+_GL_CXXALIAS_SYS (opendir, DIR *, (const char *dir_name));
+# endif
+_GL_CXXALIASWARN (opendir);
+#else
+# if @GNULIB_CLOSEDIR@ && __GNUC__ >= 11 && !defined opendir
+/* For -Wmismatched-dealloc: Associate opendir with closedir or
+   rpl_closedir.  */
+_GL_FUNCDECL_SYS (opendir, DIR *,
+                  (const char *dir_name)
+                  _GL_ARG_NONNULL ((1))
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (closedir, 1));
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef opendir
+#  if HAVE_RAW_DECL_OPENDIR
+_GL_WARN_ON_USE (opendir, "opendir is not portable - "
+                 "use gnulib module opendir for portability");
+#  endif
+# endif
+#endif
+
+#if @GNULIB_READDIR@
+# if !@HAVE_READDIR@
+_GL_FUNCDECL_SYS (readdir, struct dirent *, (DIR *dirp) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (readdir, struct dirent *, (DIR *dirp));
+_GL_CXXALIASWARN (readdir);
+#elif defined GNULIB_POSIXCHECK
+# undef readdir
+# if HAVE_RAW_DECL_READDIR
+_GL_WARN_ON_USE (readdir, "readdir is not portable - "
+                 "use gnulib module readdir for portability");
+# endif
+#endif
+
+#if @GNULIB_REWINDDIR@
+# if !@HAVE_REWINDDIR@
+_GL_FUNCDECL_SYS (rewinddir, void, (DIR *dirp) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (rewinddir, void, (DIR *dirp));
+_GL_CXXALIASWARN (rewinddir);
+#elif defined GNULIB_POSIXCHECK
+# undef rewinddir
+# if HAVE_RAW_DECL_REWINDDIR
+_GL_WARN_ON_USE (rewinddir, "rewinddir is not portable - "
+                 "use gnulib module rewinddir for portability");
+# endif
+#endif
+
+#if @GNULIB_DIRFD@
+/* Return the file descriptor associated with the given directory stream,
+   or -1 if none exists.  */
+# if @REPLACE_DIRFD@
+/* On kLIBC, dirfd() is a macro that does not work.  Undefine it.  */
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE) || defined dirfd
+#   undef dirfd
+#   define dirfd rpl_dirfd
+#  endif
+_GL_FUNCDECL_RPL (dirfd, int, (DIR *) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (dirfd, int, (DIR *));
+
+#  ifdef __KLIBC__
+/* Gnulib internal hooks needed to maintain the dirfd metadata.  */
+_GL_EXTERN_C int _gl_register_dirp_fd (int fd, DIR *dirp)
+     _GL_ARG_NONNULL ((2));
+_GL_EXTERN_C void _gl_unregister_dirp_fd (int fd);
+#  endif
+# else
+#  if defined __cplusplus && defined GNULIB_NAMESPACE && defined dirfd
+    /* dirfd is defined as a macro and not as a function.
+       Turn it into a function and get rid of the macro.  */
+static inline int (dirfd) (DIR *dp) { return dirfd (dp); }
+#   undef dirfd
+#  endif
+#  if !(@HAVE_DECL_DIRFD@ || defined dirfd)
+_GL_FUNCDECL_SYS (dirfd, int, (DIR *) _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (dirfd, int, (DIR *));
+# endif
+_GL_CXXALIASWARN (dirfd);
+#elif defined GNULIB_POSIXCHECK
+# undef dirfd
+# if HAVE_RAW_DECL_DIRFD
+_GL_WARN_ON_USE (dirfd, "dirfd is unportable - "
+                 "use gnulib module dirfd for portability");
+# endif
+#endif
+
+#if @GNULIB_FDOPENDIR@
+/* Open a directory stream visiting the given directory file
+   descriptor.  Return NULL and set errno if fd is not visiting a
+   directory.  On success, this function consumes fd (it will be
+   implicitly closed either by this function or by a subsequent
+   closedir).  */
+# if @REPLACE_FDOPENDIR@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fdopendir
+#   define fdopendir rpl_fdopendir
+#  endif
+_GL_FUNCDECL_RPL (fdopendir, DIR *,
+                  (int fd)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (closedir, 1));
+_GL_CXXALIAS_RPL (fdopendir, DIR *, (int fd));
+# else
+#  if !@HAVE_FDOPENDIR@ || !@HAVE_DECL_FDOPENDIR@ || __GNUC__ >= 11
+_GL_FUNCDECL_SYS (fdopendir, DIR *,
+                  (int fd)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (closedir, 1));
+#  endif
+_GL_CXXALIAS_SYS (fdopendir, DIR *, (int fd));
+# endif
+_GL_CXXALIASWARN (fdopendir);
+#else
+# if @GNULIB_CLOSEDIR@ && __GNUC__ >= 11 && !defined fdopendir
+/* For -Wmismatched-dealloc: Associate fdopendir with closedir or
+   rpl_closedir.  */
+_GL_FUNCDECL_SYS (fdopendir, DIR *,
+                  (int fd)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (closedir, 1));
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef fdopendir
+#  if HAVE_RAW_DECL_FDOPENDIR
+_GL_WARN_ON_USE (fdopendir, "fdopendir is unportable - "
+                 "use gnulib module fdopendir for portability");
+#  endif
+# endif
+#endif
+
+#if @GNULIB_SCANDIR@
+/* Scan the directory DIR, calling FILTER on each directory entry.
+   Entries for which FILTER returns nonzero are individually malloc'd,
+   sorted using qsort with CMP, and collected in a malloc'd array in
+   *NAMELIST.  Returns the number of entries selected, or -1 on error.  */
+# if !@HAVE_SCANDIR@
+_GL_FUNCDECL_SYS (scandir, int,
+                  (const char *dir, struct dirent ***namelist,
+                   int (*filter) (const struct dirent *),
+                   int (*cmp) (const struct dirent **, const struct dirent **))
+                  _GL_ARG_NONNULL ((1, 2, 4)));
+# endif
+/* Need to cast, because on glibc systems, the fourth parameter is
+                        int (*cmp) (const void *, const void *).  */
+_GL_CXXALIAS_SYS_CAST (scandir, int,
+                       (const char *dir, struct dirent ***namelist,
+                        int (*filter) (const struct dirent *),
+                        int (*cmp) (const struct dirent **, const struct dirent **)));
+_GL_CXXALIASWARN (scandir);
+#elif defined GNULIB_POSIXCHECK
+# undef scandir
+# if HAVE_RAW_DECL_SCANDIR
+_GL_WARN_ON_USE (scandir, "scandir is unportable - "
+                 "use gnulib module scandir for portability");
+# endif
+#endif
+
+#if @GNULIB_ALPHASORT@
+/* Compare two 'struct dirent' entries alphabetically.  */
+# if !@HAVE_ALPHASORT@
+_GL_FUNCDECL_SYS (alphasort, int,
+                  (const struct dirent **, const struct dirent **)
+                  _GL_ATTRIBUTE_PURE
+                  _GL_ARG_NONNULL ((1, 2)));
+# endif
+/* Need to cast, because on glibc systems, the parameters are
+                       (const void *, const void *).  */
+_GL_CXXALIAS_SYS_CAST (alphasort, int,
+                       (const struct dirent **, const struct dirent **));
+_GL_CXXALIASWARN (alphasort);
+#elif defined GNULIB_POSIXCHECK
+# undef alphasort
+# if HAVE_RAW_DECL_ALPHASORT
+_GL_WARN_ON_USE (alphasort, "alphasort is unportable - "
+                 "use gnulib module alphasort for portability");
+# endif
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_DIRENT_H */
+#endif /* _@GUARD_PREFIX@_DIRENT_H */
diff --git a/src/grep/lib/dirfd.c b/src/grep/lib/dirfd.c
new file mode 100644
index 0000000..640cb4f
--- /dev/null
+++ b/src/grep/lib/dirfd.c
@@ -0,0 +1,98 @@
+/* dirfd.c -- return the file descriptor associated with an open DIR*
+
+   Copyright (C) 2001, 2006, 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering. */
+
+#include <config.h>
+
+#include <dirent.h>
+#include <errno.h>
+
+#ifdef __KLIBC__
+# include <stdlib.h>
+# include <io.h>
+
+static struct dirp_fd_list
+{
+  DIR *dirp;
+  int fd;
+  struct dirp_fd_list *next;
+} *dirp_fd_start = NULL;
+
+/* Register fd associated with dirp to dirp_fd_list. */
+int
+_gl_register_dirp_fd (int fd, DIR *dirp)
+{
+  struct dirp_fd_list *new_dirp_fd = malloc (sizeof *new_dirp_fd);
+  if (!new_dirp_fd)
+    return -1;
+
+  new_dirp_fd->dirp = dirp;
+  new_dirp_fd->fd = fd;
+  new_dirp_fd->next = dirp_fd_start;
+
+  dirp_fd_start = new_dirp_fd;
+
+  return 0;
+}
+
+/* Unregister fd from dirp_fd_list with closing it */
+void
+_gl_unregister_dirp_fd (int fd)
+{
+  struct dirp_fd_list *dirp_fd;
+  struct dirp_fd_list *dirp_fd_prev;
+
+  for (dirp_fd_prev = NULL, dirp_fd = dirp_fd_start; dirp_fd;
+       dirp_fd_prev = dirp_fd, dirp_fd = dirp_fd->next)
+    {
+      if (dirp_fd->fd == fd)
+        {
+          if (dirp_fd_prev)
+            dirp_fd_prev->next = dirp_fd->next;
+          else  /* dirp_fd == dirp_fd_start */
+            dirp_fd_start = dirp_fd_start->next;
+
+          close (fd);
+          free (dirp_fd);
+          break;
+        }
+    }
+}
+#endif
+
+int
+dirfd (DIR *dir_p)
+{
+  int fd = DIR_TO_FD (dir_p);
+  if (fd == -1)
+#ifndef __KLIBC__
+    errno = ENOTSUP;
+#else
+    {
+      struct dirp_fd_list *dirp_fd;
+
+      for (dirp_fd = dirp_fd_start; dirp_fd; dirp_fd = dirp_fd->next)
+        if (dirp_fd->dirp == dir_p)
+          return dirp_fd->fd;
+
+      errno = EINVAL;
+    }
+#endif
+
+  return fd;
+}
diff --git a/src/grep/lib/dirname-lgpl.c b/src/grep/lib/dirname-lgpl.c
new file mode 100644
index 0000000..95f9c99
--- /dev/null
+++ b/src/grep/lib/dirname-lgpl.c
@@ -0,0 +1,86 @@
+/* dirname.c -- return all but the last element in a file name
+
+   Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "dirname.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+/* Return the length of the prefix of FILE that will be used by
+   dir_name.  If FILE is in the working directory, this returns zero
+   even though 'dir_name (FILE)' will return ".".  Works properly even
+   if there are trailing slashes (by effectively ignoring them).  */
+
+size_t
+dir_len (char const *file)
+{
+  size_t prefix_length = FILE_SYSTEM_PREFIX_LEN (file);
+  size_t length;
+
+  /* Advance prefix_length beyond important leading slashes.  */
+  prefix_length += (prefix_length != 0
+                    ? (FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
+                       && ISSLASH (file[prefix_length]))
+                    : (ISSLASH (file[0])
+                       ? ((DOUBLE_SLASH_IS_DISTINCT_ROOT
+                           && ISSLASH (file[1]) && ! ISSLASH (file[2])
+                           ? 2 : 1))
+                       : 0));
+
+  /* Strip the basename and any redundant slashes before it.  */
+  for (length = last_component (file) - file;
+       prefix_length < length; length--)
+    if (! ISSLASH (file[length - 1]))
+      break;
+  return length;
+}
+
+
+/* In general, we can't use the builtin 'dirname' function if available,
+   since it has different meanings in different environments.
+   In some environments the builtin 'dirname' modifies its argument.
+
+   Return the leading directories part of FILE, allocated with malloc.
+   Works properly even if there are trailing slashes (by effectively
+   ignoring them).  Return NULL on failure.
+
+   If lstat (FILE) would succeed, then { chdir (dir_name (FILE));
+   lstat (base_name (FILE)); } will access the same file.  Likewise,
+   if the sequence { chdir (dir_name (FILE));
+   rename (base_name (FILE), "foo"); } succeeds, you have renamed FILE
+   to "foo" in the same directory FILE was in.  */
+
+char *
+mdir_name (char const *file)
+{
+  size_t length = dir_len (file);
+  bool append_dot = (length == 0
+                     || (FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
+                         && length == FILE_SYSTEM_PREFIX_LEN (file)
+                         && file[2] != '\0' && ! ISSLASH (file[2])));
+  char *dir = malloc (length + append_dot + 1);
+  if (!dir)
+    return NULL;
+  memcpy (dir, file, length);
+  if (append_dot)
+    dir[length++] = '.';
+  dir[length] = '\0';
+  return dir;
+}
diff --git a/src/grep/lib/dirname.h b/src/grep/lib/dirname.h
new file mode 100644
index 0000000..25abc7b
--- /dev/null
+++ b/src/grep/lib/dirname.h
@@ -0,0 +1,54 @@
+/* Take file names apart into directory and base names.
+
+   Copyright (C) 1998, 2001, 2003-2006, 2009-2021 Free Software Foundation,
+   Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef DIRNAME_H_
+# define DIRNAME_H_ 1
+
+# include <stdbool.h>
+# include <stdlib.h>
+# include "filename.h"
+# include "basename-lgpl.h"
+
+# ifndef DIRECTORY_SEPARATOR
+#  define DIRECTORY_SEPARATOR '/'
+# endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+# if GNULIB_DIRNAME
+char *base_name (char const *file)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+char *dir_name (char const *file)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+# endif
+
+char *mdir_name (char const *file)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
+size_t dir_len (char const *file) _GL_ATTRIBUTE_PURE;
+
+bool strip_trailing_slashes (char *file);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* not DIRNAME_H_ */
diff --git a/src/grep/lib/dup-safer-flag.c b/src/grep/lib/dup-safer-flag.c
new file mode 100644
index 0000000..ec36a78
--- /dev/null
+++ b/src/grep/lib/dup-safer-flag.c
@@ -0,0 +1,54 @@
+/* Duplicate a file descriptor result, avoiding clobbering
+   STD{IN,OUT,ERR}_FILENO, with specific flags.
+
+   Copyright (C) 2001, 2004-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert and Eric Blake.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "unistd-safer.h"
+
+#include <fcntl.h>
+#include <unistd.h>
+
+/* Like dup, but do not return STDIN_FILENO, STDOUT_FILENO, or
+   STDERR_FILENO.  If FLAG contains O_CLOEXEC, behave like
+   fcntl(F_DUPFD_CLOEXEC) rather than fcntl(F_DUPFD).  */
+
+int
+dup_safer_flag (int fd, int flag)
+{
+#if defined(KMK_GREP) && defined(_MSC_VER)
+  int afd[STDERR_FILENO + 1];
+  int i;
+  for (i = 0; ; i++)
+    {
+      int fdNew = _dup(fd);
+      if (fdNew >= STDERR_FILENO + 1 || fdNew < 0)
+        {
+          while (i-- > 0)
+            close(afd[i]);
+          return fdNew;
+        }
+      afd[i] = fdNew;
+    }
+#else
+  return fcntl (fd, (flag & O_CLOEXEC) ? F_DUPFD_CLOEXEC : F_DUPFD,
+                STDERR_FILENO + 1);
+#endif
+}
diff --git a/src/grep/lib/dup-safer.c b/src/grep/lib/dup-safer.c
new file mode 100644
index 0000000..d8d3de3
--- /dev/null
+++ b/src/grep/lib/dup-safer.c
@@ -0,0 +1,50 @@
+/* Invoke dup, but avoid some glitches.
+
+   Copyright (C) 2001, 2004-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <config.h>
+
+#include "unistd-safer.h"
+
+#include <fcntl.h>
+#include <unistd.h>
+
+/* Like dup, but do not return STDIN_FILENO, STDOUT_FILENO, or
+   STDERR_FILENO.  */
+
+int
+dup_safer (int fd)
+{
+#if defined(KMK_GREP) && defined(_MSC_VER)
+  int afd[STDERR_FILENO + 1];
+  int i;
+  for (i = 0; ; i++)
+    {
+      int fdNew = _dup(fd);
+      if (fdNew >= STDERR_FILENO + 1 || fdNew < 0)
+        {
+          while (i-- > 0)
+            close(afd[i]);
+          return fdNew;
+        }
+      afd[i] = fdNew;
+    }
+#else
+  return fcntl (fd, F_DUPFD, STDERR_FILENO + 1);
+#endif
+}
diff --git a/src/grep/lib/dup.c b/src/grep/lib/dup.c
new file mode 100644
index 0000000..c3c727a
--- /dev/null
+++ b/src/grep/lib/dup.c
@@ -0,0 +1,92 @@
+/* Duplicate an open file descriptor.
+
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include <errno.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#undef dup
+
+#if defined _WIN32 && !defined __CYGWIN__
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static int
+dup_nothrow (int fd)
+{
+  int result;
+
+  TRY_MSVC_INVAL
+    {
+      result = _dup (fd);
+    }
+  CATCH_MSVC_INVAL
+    {
+      result = -1;
+      errno = EBADF;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+# else
+#  define dup_nothrow _dup
+# endif
+#elif defined __KLIBC__
+# include <fcntl.h>
+# include <sys/stat.h>
+
+# include <InnoTekLIBC/backend.h>
+
+static int
+dup_nothrow (int fd)
+{
+  int dupfd;
+  struct stat sbuf;
+
+  dupfd = dup (fd);
+  if (dupfd == -1 && errno == ENOTSUP \
+      && !fstat (fd, &sbuf) && S_ISDIR (sbuf.st_mode))
+    {
+      char path[_MAX_PATH];
+
+      /* Get a path from fd */
+      if (!__libc_Back_ioFHToPath (fd, path, sizeof (path)))
+        dupfd = open (path, O_RDONLY);
+    }
+
+  return dupfd;
+}
+#else
+# define dup_nothrow dup
+#endif
+
+int
+rpl_dup (int fd)
+{
+  int result = dup_nothrow (fd);
+#if REPLACE_FCHDIR
+  if (result >= 0)
+    result = _gl_register_dup (fd, result);
+#endif
+  return result;
+}
diff --git a/src/grep/lib/dup2.c b/src/grep/lib/dup2.c
new file mode 100644
index 0000000..53e5552
--- /dev/null
+++ b/src/grep/lib/dup2.c
@@ -0,0 +1,189 @@
+/* Duplicate an open file descriptor to a specified file descriptor.
+
+   Copyright (C) 1999, 2004-2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Paul Eggert */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include <errno.h>
+#include <fcntl.h>
+
+#undef dup2
+
+#if defined _WIN32 && ! defined __CYGWIN__
+
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+#  include "msvc-inval.h"
+# endif
+
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static int
+dup2_nothrow (int fd, int desired_fd)
+{
+  int result;
+
+  TRY_MSVC_INVAL
+    {
+      result = _dup2 (fd, desired_fd);
+    }
+  CATCH_MSVC_INVAL
+    {
+      errno = EBADF;
+      result = -1;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+# else
+#  define dup2_nothrow _dup2
+# endif
+
+static int
+ms_windows_dup2 (int fd, int desired_fd)
+{
+  int result;
+
+  /* If fd is closed, mingw hangs on dup2 (fd, fd).  If fd is open,
+     dup2 (fd, fd) returns 0, but all further attempts to use fd in
+     future dup2 calls will hang.  */
+  if (fd == desired_fd)
+    {
+      if ((HANDLE) _get_osfhandle (fd) == INVALID_HANDLE_VALUE)
+        {
+          errno = EBADF;
+          return -1;
+        }
+      return fd;
+    }
+
+  /* Wine 1.0.1 return 0 when desired_fd is negative but not -1:
+     https://bugs.winehq.org/show_bug.cgi?id=21289 */
+  if (desired_fd < 0)
+    {
+      errno = EBADF;
+      return -1;
+    }
+
+  result = dup2_nothrow (fd, desired_fd);
+
+  if (result == 0)
+    result = desired_fd;
+
+  return result;
+}
+
+# define dup2 ms_windows_dup2
+
+#elif defined __KLIBC__
+
+# include <InnoTekLIBC/backend.h>
+
+static int
+klibc_dup2dirfd (int fd, int desired_fd)
+{
+  int tempfd;
+  int dupfd;
+
+  tempfd = open ("NUL", O_RDONLY);
+  if (tempfd == -1)
+    return -1;
+
+  if (tempfd == desired_fd)
+    {
+      close (tempfd);
+
+      char path[_MAX_PATH];
+      if (__libc_Back_ioFHToPath (fd, path, sizeof (path)))
+        return -1;
+
+      return open(path, O_RDONLY);
+    }
+
+  dupfd = klibc_dup2dirfd (fd, desired_fd);
+
+  close (tempfd);
+
+  return dupfd;
+}
+
+static int
+klibc_dup2 (int fd, int desired_fd)
+{
+  int dupfd;
+  struct stat sbuf;
+
+  dupfd = dup2 (fd, desired_fd);
+  if (dupfd == -1 && errno == ENOTSUP \
+      && !fstat (fd, &sbuf) && S_ISDIR (sbuf.st_mode))
+    {
+      close (desired_fd);
+
+      return klibc_dup2dirfd (fd, desired_fd);
+    }
+
+  return dupfd;
+}
+
+# define dup2 klibc_dup2
+#endif
+
+int
+rpl_dup2 (int fd, int desired_fd)
+{
+  int result;
+
+#ifdef F_GETFL
+  /* On Linux kernels 2.6.26-2.6.29, dup2 (fd, fd) returns -EBADF.
+     On Cygwin 1.5.x, dup2 (1, 1) returns 0.
+     On Cygwin 1.7.17, dup2 (1, -1) dumps core.
+     On Cygwin 1.7.25, dup2 (1, 256) can dump core.
+     On Haiku, dup2 (fd, fd) mistakenly clears FD_CLOEXEC.  */
+# if HAVE_SETDTABLESIZE
+  setdtablesize (desired_fd + 1);
+# endif
+  if (desired_fd < 0)
+    fd = desired_fd;
+  if (fd == desired_fd)
+    return fcntl (fd, F_GETFL) == -1 ? -1 : fd;
+#endif
+
+  result = dup2 (fd, desired_fd);
+
+  /* Correct an errno value on FreeBSD 6.1 and Cygwin 1.5.x.  */
+  if (result == -1 && errno == EMFILE)
+    errno = EBADF;
+#if REPLACE_FCHDIR
+  if (fd != desired_fd && result != -1)
+    result = _gl_register_dup (fd, result);
+#endif
+  return result;
+}
diff --git a/src/grep/lib/dynarray.h b/src/grep/lib/dynarray.h
new file mode 100644
index 0000000..ec64273
--- /dev/null
+++ b/src/grep/lib/dynarray.h
@@ -0,0 +1,284 @@
+/* Type-safe arrays which grow dynamically.
+   Copyright 2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert and Bruno Haible, 2021.  */
+
+#ifndef _GL_DYNARRAY_H
+#define _GL_DYNARRAY_H
+
+/* Before including this file, you need to define:
+
+   DYNARRAY_STRUCT
+      The struct tag of dynamic array to be defined.
+
+   DYNARRAY_ELEMENT
+      The type name of the element type.  Elements are copied
+      as if by memcpy, and can change address as the dynamic
+      array grows.
+
+   DYNARRAY_PREFIX
+      The prefix of the functions which are defined.
+
+   The following parameters are optional:
+
+   DYNARRAY_ELEMENT_FREE
+      DYNARRAY_ELEMENT_FREE (E) is evaluated to deallocate the
+      contents of elements. E is of type  DYNARRAY_ELEMENT *.
+
+   DYNARRAY_ELEMENT_INIT
+      DYNARRAY_ELEMENT_INIT (E) is evaluated to initialize a new
+      element.  E is of type  DYNARRAY_ELEMENT *.
+      If DYNARRAY_ELEMENT_FREE but not DYNARRAY_ELEMENT_INIT is
+      defined, new elements are automatically zero-initialized.
+      Otherwise, new elements have undefined contents.
+
+   DYNARRAY_INITIAL_SIZE
+      The size of the statically allocated array (default:
+      at least 2, more elements if they fit into 128 bytes).
+      Must be a preprocessor constant.  If DYNARRAY_INITIAL_SIZE is 0,
+      there is no statically allocated array at, and all non-empty
+      arrays are heap-allocated.
+
+   DYNARRAY_FINAL_TYPE
+      The name of the type which holds the final array.  If not
+      defined, is PREFIX##finalize not provided.  DYNARRAY_FINAL_TYPE
+      must be a struct type, with members of type DYNARRAY_ELEMENT and
+      size_t at the start (in this order).
+
+   These macros are undefined after this header file has been
+   included.
+
+   The following types are provided (their members are private to the
+   dynarray implementation):
+
+     struct DYNARRAY_STRUCT
+
+   The following functions are provided:
+ */
+
+/* Initialize a dynamic array object.  This must be called before any
+   use of the object.  */
+#if 0
+static void
+       DYNARRAY_PREFIX##init (struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Deallocate the dynamic array and its elements.  */
+#if 0
+static void
+       DYNARRAY_PREFIX##free (struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Return true if the dynamic array is in an error state.  */
+#if 0
+static bool
+       DYNARRAY_PREFIX##has_failed (const struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Mark the dynamic array as failed.  All elements are deallocated as
+   a side effect.  */
+#if 0
+static void
+       DYNARRAY_PREFIX##mark_failed (struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Return the number of elements which have been added to the dynamic
+   array.  */
+#if 0
+static size_t
+       DYNARRAY_PREFIX##size (const struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Return a pointer to the first array element, if any.  For a
+   zero-length array, the pointer can be NULL even though the dynamic
+   array has not entered the failure state.  */
+#if 0
+static DYNARRAY_ELEMENT *
+       DYNARRAY_PREFIX##begin (const struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Return a pointer one element past the last array element.  For a
+   zero-length array, the pointer can be NULL even though the dynamic
+   array has not entered the failure state.  */
+#if 0
+static DYNARRAY_ELEMENT *
+       DYNARRAY_PREFIX##end (const struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Return a pointer to the array element at INDEX.  Terminate the
+   process if INDEX is out of bounds.  */
+#if 0
+static DYNARRAY_ELEMENT *
+       DYNARRAY_PREFIX##at (struct DYNARRAY_STRUCT *list, size_t index);
+#endif
+
+/* Add ITEM at the end of the array, enlarging it by one element.
+   Mark *LIST as failed if the dynamic array allocation size cannot be
+   increased.  */
+#if 0
+static void
+       DYNARRAY_PREFIX##add (struct DYNARRAY_STRUCT *list,
+                             DYNARRAY_ELEMENT item);
+#endif
+
+/* Allocate a place for a new element in *LIST and return a pointer to
+   it.  The pointer can be NULL if the dynamic array cannot be
+   enlarged due to a memory allocation failure.  */
+#if 0
+static DYNARRAY_ELEMENT *
+       DYNARRAY_PREFIX##emplace (struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Change the size of *LIST to SIZE.  If SIZE is larger than the
+   existing size, new elements are added (which can be initialized).
+   Otherwise, the list is truncated, and elements are freed.  Return
+   false on memory allocation failure (and mark *LIST as failed).  */
+#if 0
+static bool
+       DYNARRAY_PREFIX##resize (struct DYNARRAY_STRUCT *list, size_t size);
+#endif
+
+/* Remove the last element of LIST if it is present.  */
+#if 0
+static void
+       DYNARRAY_PREFIX##remove_last (struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Remove all elements from the list.  The elements are freed, but the
+   list itself is not.  */
+#if 0
+static void
+       DYNARRAY_PREFIX##clear (struct DYNARRAY_STRUCT *list);
+#endif
+
+#if defined DYNARRAY_FINAL_TYPE
+/* Transfer the dynamic array to a permanent location at *RESULT.
+   Returns true on success on false on allocation failure.  In either
+   case, *LIST is re-initialized and can be reused.  A NULL pointer is
+   stored in *RESULT if LIST refers to an empty list.  On success, the
+   pointer in *RESULT is heap-allocated and must be deallocated using
+   free.  */
+#if 0
+static bool
+       DYNARRAY_PREFIX##finalize (struct DYNARRAY_STRUCT *list,
+                                  DYNARRAY_FINAL_TYPE *result);
+#endif
+#else /* !defined DYNARRAY_FINAL_TYPE */
+/* Transfer the dynamic array to a heap-allocated array and return a
+   pointer to it.  The pointer is NULL if memory allocation fails, or
+   if the array is empty, so this function should be used only for
+   arrays which are known not be empty (usually because they always
+   have a sentinel at the end).  If LENGTHP is not NULL, the array
+   length is written to *LENGTHP.  *LIST is re-initialized and can be
+   reused.  */
+#if 0
+static DYNARRAY_ELEMENT *
+       DYNARRAY_PREFIX##finalize (struct DYNARRAY_STRUCT *list,
+                                  size_t *lengthp);
+#endif
+#endif
+
+/* A minimal example which provides a growing list of integers can be
+   defined like this:
+
+     struct int_array
+     {
+       // Pointer to result array followed by its length,
+       // as required by DYNARRAY_FINAL_TYPE.
+       int *array;
+       size_t length;
+     };
+
+     #define DYNARRAY_STRUCT dynarray_int
+     #define DYNARRAY_ELEMENT int
+     #define DYNARRAY_PREFIX dynarray_int_
+     #define DYNARRAY_FINAL_TYPE struct int_array
+     #include <malloc/dynarray-skeleton.c>
+
+   To create a three-element array with elements 1, 2, 3, use this
+   code:
+
+     struct dynarray_int dyn;
+     dynarray_int_init (&dyn);
+     for (int i = 1; i <= 3; ++i)
+       {
+         int *place = dynarray_int_emplace (&dyn);
+         assert (place != NULL);
+         *place = i;
+       }
+     struct int_array result;
+     bool ok = dynarray_int_finalize (&dyn, &result);
+     assert (ok);
+     assert (result.length == 3);
+     assert (result.array[0] == 1);
+     assert (result.array[1] == 2);
+     assert (result.array[2] == 3);
+     free (result.array);
+
+   If the elements contain resources which must be freed, define
+   DYNARRAY_ELEMENT_FREE appropriately, like this:
+
+     struct str_array
+     {
+       char **array;
+       size_t length;
+     };
+
+     #define DYNARRAY_STRUCT dynarray_str
+     #define DYNARRAY_ELEMENT char *
+     #define DYNARRAY_ELEMENT_FREE(ptr) free (*ptr)
+     #define DYNARRAY_PREFIX dynarray_str_
+     #define DYNARRAY_FINAL_TYPE struct str_array
+     #include <malloc/dynarray-skeleton.c>
+ */
+
+
+/* The implementation is imported from glibc.  */
+
+/* Avoid possible conflicts with symbols exported by the GNU libc.  */
+#define __libc_dynarray_at_failure gl_dynarray_at_failure
+#define __libc_dynarray_emplace_enlarge gl_dynarray_emplace_enlarge
+#define __libc_dynarray_finalize gl_dynarray_finalize
+#define __libc_dynarray_resize_clear gl_dynarray_resize_clear
+#define __libc_dynarray_resize gl_dynarray_resize
+
+#if defined DYNARRAY_STRUCT || defined DYNARRAY_ELEMENT || defined DYNARRAY_PREFIX
+
+# ifndef _GL_LIKELY
+/* Rely on __builtin_expect, as provided by the module 'builtin-expect'.  */
+#  define _GL_LIKELY(cond) __builtin_expect ((cond), 1)
+#  define _GL_UNLIKELY(cond) __builtin_expect ((cond), 0)
+# endif
+
+/* Define auxiliary structs and declare auxiliary functions, common to all
+   instantiations of dynarray.  */
+# include <malloc/dynarray.gl.h>
+
+/* Define the instantiation, specified through
+     DYNARRAY_STRUCT
+     DYNARRAY_ELEMENT
+     DYNARRAY_PREFIX
+   etc.  */
+# include <malloc/dynarray-skeleton.gl.h>
+
+#else
+
+/* This file is being included from one of the malloc/dynarray_*.c files.  */
+# include <malloc/dynarray.h>
+
+#endif
+
+#endif /* _GL_DYNARRAY_H */
diff --git a/src/grep/lib/errno.in.h b/src/grep/lib/errno.in.h
new file mode 100644
index 0000000..3cad9e2
--- /dev/null
+++ b/src/grep/lib/errno.in.h
@@ -0,0 +1,279 @@
+/* A POSIX-like <errno.h>.
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _@GUARD_PREFIX@_ERRNO_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_ERRNO_H@
+
+#ifndef _@GUARD_PREFIX@_ERRNO_H
+#define _@GUARD_PREFIX@_ERRNO_H
+
+
+/* On native Windows platforms, many macros are not defined.  */
+# if defined _WIN32 && ! defined __CYGWIN__
+
+/* These are the same values as defined by MSVC 10, for interoperability.  */
+
+#  ifndef ENOMSG
+#   define ENOMSG    122
+#   define GNULIB_defined_ENOMSG 1
+#  endif
+
+#  ifndef EIDRM
+#   define EIDRM     111
+#   define GNULIB_defined_EIDRM 1
+#  endif
+
+#  ifndef ENOLINK
+#   define ENOLINK   121
+#   define GNULIB_defined_ENOLINK 1
+#  endif
+
+#  ifndef EPROTO
+#   define EPROTO    134
+#   define GNULIB_defined_EPROTO 1
+#  endif
+
+#  ifndef EBADMSG
+#   define EBADMSG   104
+#   define GNULIB_defined_EBADMSG 1
+#  endif
+
+#  ifndef EOVERFLOW
+#   define EOVERFLOW 132
+#   define GNULIB_defined_EOVERFLOW 1
+#  endif
+
+#  ifndef ENOTSUP
+#   define ENOTSUP   129
+#   define GNULIB_defined_ENOTSUP 1
+#  endif
+
+#  ifndef ENETRESET
+#   define ENETRESET 117
+#   define GNULIB_defined_ENETRESET 1
+#  endif
+
+#  ifndef ECONNABORTED
+#   define ECONNABORTED 106
+#   define GNULIB_defined_ECONNABORTED 1
+#  endif
+
+#  ifndef ECANCELED
+#   define ECANCELED 105
+#   define GNULIB_defined_ECANCELED 1
+#  endif
+
+#  ifndef EOWNERDEAD
+#   define EOWNERDEAD 133
+#   define GNULIB_defined_EOWNERDEAD 1
+#  endif
+
+#  ifndef ENOTRECOVERABLE
+#   define ENOTRECOVERABLE 127
+#   define GNULIB_defined_ENOTRECOVERABLE 1
+#  endif
+
+#  ifndef EINPROGRESS
+#   define EINPROGRESS     112
+#   define EALREADY        103
+#   define ENOTSOCK        128
+#   define EDESTADDRREQ    109
+#   define EMSGSIZE        115
+#   define EPROTOTYPE      136
+#   define ENOPROTOOPT     123
+#   define EPROTONOSUPPORT 135
+#   define EOPNOTSUPP      130
+#   define EAFNOSUPPORT    102
+#   define EADDRINUSE      100
+#   define EADDRNOTAVAIL   101
+#   define ENETDOWN        116
+#   define ENETUNREACH     118
+#   define ECONNRESET      108
+#   define ENOBUFS         119
+#   define EISCONN         113
+#   define ENOTCONN        126
+#   define ETIMEDOUT       138
+#   define ECONNREFUSED    107
+#   define ELOOP           114
+#   define EHOSTUNREACH    110
+#   define EWOULDBLOCK     140
+#   define GNULIB_defined_ESOCK 1
+#  endif
+
+#  ifndef ETXTBSY
+#   define ETXTBSY         139
+#   define ENODATA         120  /* not required by POSIX */
+#   define ENOSR           124  /* not required by POSIX */
+#   define ENOSTR          125  /* not required by POSIX */
+#   define ETIME           137  /* not required by POSIX */
+#   define EOTHER          131  /* not required by POSIX */
+#   define GNULIB_defined_ESTREAMS 1
+#  endif
+
+/* These are intentionally the same values as the WSA* error numbers, defined
+   in <winsock2.h>.  */
+#  define ESOCKTNOSUPPORT 10044  /* not required by POSIX */
+#  define EPFNOSUPPORT    10046  /* not required by POSIX */
+#  define ESHUTDOWN       10058  /* not required by POSIX */
+#  define ETOOMANYREFS    10059  /* not required by POSIX */
+#  define EHOSTDOWN       10064  /* not required by POSIX */
+#  define EPROCLIM        10067  /* not required by POSIX */
+#  define EUSERS          10068  /* not required by POSIX */
+#  define EDQUOT          10069
+#  define ESTALE          10070
+#  define EREMOTE         10071  /* not required by POSIX */
+#  define GNULIB_defined_EWINSOCK 1
+
+# endif
+
+
+/* On OSF/1 5.1, when _XOPEN_SOURCE_EXTENDED is not defined, the macros
+   EMULTIHOP, ENOLINK, EOVERFLOW are not defined.  */
+# if @EMULTIHOP_HIDDEN@
+#  define EMULTIHOP @EMULTIHOP_VALUE@
+#  define GNULIB_defined_EMULTIHOP 1
+# endif
+# if @ENOLINK_HIDDEN@
+#  define ENOLINK   @ENOLINK_VALUE@
+#  define GNULIB_defined_ENOLINK 1
+# endif
+# if @EOVERFLOW_HIDDEN@
+#  define EOVERFLOW @EOVERFLOW_VALUE@
+#  define GNULIB_defined_EOVERFLOW 1
+# endif
+
+
+/* On OpenBSD 4.0 and on native Windows, the macros ENOMSG, EIDRM, ENOLINK,
+   EPROTO, EMULTIHOP, EBADMSG, EOVERFLOW, ENOTSUP, ECANCELED are not defined.
+   Likewise, on NonStop Kernel, EDQUOT is not defined.
+   Define them here.  Values >= 2000 seem safe to use: Solaris ESTALE = 151,
+   HP-UX EWOULDBLOCK = 246, IRIX EDQUOT = 1133.
+
+   Note: When one of these systems defines some of these macros some day,
+   binaries will have to be recompiled so that they recognizes the new
+   errno values from the system.  */
+
+# ifndef ENOMSG
+#  define ENOMSG    2000
+#  define GNULIB_defined_ENOMSG 1
+# endif
+
+# ifndef EIDRM
+#  define EIDRM     2001
+#  define GNULIB_defined_EIDRM 1
+# endif
+
+# ifndef ENOLINK
+#  define ENOLINK   2002
+#  define GNULIB_defined_ENOLINK 1
+# endif
+
+# ifndef EPROTO
+#  define EPROTO    2003
+#  define GNULIB_defined_EPROTO 1
+# endif
+
+# ifndef EMULTIHOP
+#  define EMULTIHOP 2004
+#  define GNULIB_defined_EMULTIHOP 1
+# endif
+
+# ifndef EBADMSG
+#  define EBADMSG   2005
+#  define GNULIB_defined_EBADMSG 1
+# endif
+
+# ifndef EOVERFLOW
+#  define EOVERFLOW 2006
+#  define GNULIB_defined_EOVERFLOW 1
+# endif
+
+# ifndef ENOTSUP
+#  define ENOTSUP   2007
+#  define GNULIB_defined_ENOTSUP 1
+# endif
+
+# ifndef ENETRESET
+#  define ENETRESET 2011
+#  define GNULIB_defined_ENETRESET 1
+# endif
+
+# ifndef ECONNABORTED
+#  define ECONNABORTED 2012
+#  define GNULIB_defined_ECONNABORTED 1
+# endif
+
+# ifndef ESTALE
+#  define ESTALE    2009
+#  define GNULIB_defined_ESTALE 1
+# endif
+
+# ifndef EDQUOT
+#  define EDQUOT 2010
+#  define GNULIB_defined_EDQUOT 1
+# endif
+
+# ifndef ECANCELED
+#  define ECANCELED 2008
+#  define GNULIB_defined_ECANCELED 1
+# endif
+
+/* On many platforms, the macros EOWNERDEAD and ENOTRECOVERABLE are not
+   defined.  */
+
+# ifndef EOWNERDEAD
+#  if defined __sun
+    /* Use the same values as defined for Solaris >= 8, for
+       interoperability.  */
+#   define EOWNERDEAD      58
+#   define ENOTRECOVERABLE 59
+#  elif defined _WIN32 && ! defined __CYGWIN__
+    /* We have a conflict here: pthreads-win32 defines these values
+       differently than MSVC 10.  It's hairy to decide which one to use.  */
+#   if defined __MINGW32__ && !defined USE_WINDOWS_THREADS
+     /* Use the same values as defined by pthreads-win32, for
+        interoperability.  */
+#    define EOWNERDEAD      43
+#    define ENOTRECOVERABLE 44
+#   else
+     /* Use the same values as defined by MSVC 10, for
+        interoperability.  */
+#    define EOWNERDEAD      133
+#    define ENOTRECOVERABLE 127
+#   endif
+#  else
+#   define EOWNERDEAD      2013
+#   define ENOTRECOVERABLE 2014
+#  endif
+#  define GNULIB_defined_EOWNERDEAD 1
+#  define GNULIB_defined_ENOTRECOVERABLE 1
+# endif
+
+# ifndef EILSEQ
+#  define EILSEQ 2015
+#  define GNULIB_defined_EILSEQ 1
+# endif
+
+#endif /* _@GUARD_PREFIX@_ERRNO_H */
+#endif /* _@GUARD_PREFIX@_ERRNO_H */
diff --git a/src/grep/lib/error.c b/src/grep/lib/error.c
new file mode 100644
index 0000000..f89dcc5
--- /dev/null
+++ b/src/grep/lib/error.c
@@ -0,0 +1,411 @@
+/* Error handler for noninteractive utilities
+   Copyright (C) 1990-1998, 2000-2007, 2009-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by David MacKenzie <djm@gnu.ai.mit.edu>.  */
+
+#if !_LIBC
+# include <config.h>
+#endif
+
+#include "error.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if !_LIBC && ENABLE_NLS
+# include "gettext.h"
+# define _(msgid) gettext (msgid)
+#endif
+
+#ifdef _LIBC
+# include <libintl.h>
+# include <stdbool.h>
+# include <stdint.h>
+# include <wchar.h>
+# define mbsrtowcs __mbsrtowcs
+# define USE_UNLOCKED_IO 0
+# define _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD(a, b)
+# define _GL_ARG_NONNULL(a)
+#else
+# include "getprogname.h"
+#endif
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
+
+#ifndef _
+# define _(String) String
+#endif
+
+/* If NULL, error will flush stdout, then print on stderr the program
+   name, a colon and a space.  Otherwise, error will call this
+   function without parameters instead.  */
+void (*error_print_progname) (void);
+
+/* This variable is incremented each time 'error' is called.  */
+unsigned int error_message_count;
+
+#ifdef _LIBC
+/* In the GNU C library, there is a predefined variable for this.  */
+
+# define program_name program_invocation_name
+# include <errno.h>
+# include <limits.h>
+# include <libio/libioP.h>
+
+/* In GNU libc we want do not want to use the common name 'error' directly.
+   Instead make it a weak alias.  */
+extern void __error (int status, int errnum, const char *message, ...)
+     __attribute__ ((__format__ (__printf__, 3, 4)));
+extern void __error_at_line (int status, int errnum, const char *file_name,
+                             unsigned int line_number, const char *message,
+                             ...)
+     __attribute__ ((__format__ (__printf__, 5, 6)));
+# define error __error
+# define error_at_line __error_at_line
+
+# include <libio/iolibio.h>
+# define fflush(s) _IO_fflush (s)
+# undef putc
+# define putc(c, fp) _IO_putc (c, fp)
+
+# include <bits/libc-lock.h>
+
+#else /* not _LIBC */
+
+# include <fcntl.h>
+# include <unistd.h>
+
+# if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+#  define WIN32_LEAN_AND_MEAN
+#  include <windows.h>
+/* Get _get_osfhandle.  */
+#  if GNULIB_MSVC_NOTHROW
+#   include "msvc-nothrow.h"
+#  else
+#   include <io.h>
+#  endif
+# endif
+
+/* The gnulib override of fcntl is not needed in this file.  */
+# undef fcntl
+
+# if !(GNULIB_STRERROR_R_POSIX || HAVE_DECL_STRERROR_R)
+#  ifndef HAVE_DECL_STRERROR_R
+"this configure-time declaration test was not run"
+#  endif
+#  if STRERROR_R_CHAR_P
+char *strerror_r (int errnum, char *buf, size_t buflen);
+#  else
+int strerror_r (int errnum, char *buf, size_t buflen);
+#  endif
+# endif
+
+# define program_name getprogname ()
+
+# if GNULIB_STRERROR_R_POSIX || HAVE_STRERROR_R || defined strerror_r
+#  define __strerror_r strerror_r
+# endif /* GNULIB_STRERROR_R_POSIX || HAVE_STRERROR_R || defined strerror_r */
+#endif  /* not _LIBC */
+
+#if !_LIBC
+/* Return non-zero if FD is open.  */
+static int
+is_open (int fd)
+{
+# if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows: The initial state of unassigned standard file
+     descriptors is that they are open but point to an INVALID_HANDLE_VALUE.
+     There is no fcntl, and the gnulib replacement fcntl does not support
+     F_GETFL.  */
+  return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
+# else
+#  ifndef F_GETFL
+#   error Please port fcntl to your platform
+#  endif
+  return 0 <= fcntl (fd, F_GETFL);
+# endif
+}
+#endif
+
+static void
+flush_stdout (void)
+{
+#if !_LIBC
+  int stdout_fd;
+
+# if GNULIB_FREOPEN_SAFER
+  /* Use of gnulib's freopen-safer module normally ensures that
+       fileno (stdout) == 1
+     whenever stdout is open.  */
+  stdout_fd = STDOUT_FILENO;
+# else
+  /* POSIX states that fileno (stdout) after fclose is unspecified.  But in
+     practice it is not a problem, because stdout is statically allocated and
+     the fd of a FILE stream is stored as a field in its allocated memory.  */
+  stdout_fd = fileno (stdout);
+# endif
+  /* POSIX states that fflush (stdout) after fclose is unspecified; it
+     is safe in glibc, but not on all other platforms.  fflush (NULL)
+     is always defined, but too draconian.  */
+  if (0 <= stdout_fd && is_open (stdout_fd))
+#endif
+    fflush (stdout);
+}
+
+static void
+print_errno_message (int errnum)
+{
+  char const *s;
+
+#if _LIBC || GNULIB_STRERROR_R_POSIX || defined HAVE_STRERROR_R
+  char errbuf[1024];
+# if _LIBC || (!GNULIB_STRERROR_R_POSIX && STRERROR_R_CHAR_P)
+  s = __strerror_r (errnum, errbuf, sizeof errbuf);
+# else
+  if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
+    s = errbuf;
+  else
+    s = 0;
+# endif
+#else
+  s = strerror (errnum);
+#endif
+
+#if !_LIBC
+  if (! s)
+    s = _("Unknown system error");
+#endif
+
+#if _LIBC
+  __fxprintf (NULL, ": %s", s);
+#else
+  fprintf (stderr, ": %s", s);
+#endif
+}
+
+static void _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (3, 0) _GL_ARG_NONNULL ((3))
+error_tail (int status, int errnum, const char *message, va_list args)
+{
+#if _LIBC
+  if (_IO_fwide (stderr, 0) > 0)
+    {
+      size_t len = strlen (message) + 1;
+      wchar_t *wmessage = NULL;
+      mbstate_t st;
+      size_t res;
+      const char *tmp;
+      bool use_malloc = false;
+
+      while (1)
+        {
+          if (__libc_use_alloca (len * sizeof (wchar_t)))
+            wmessage = (wchar_t *) alloca (len * sizeof (wchar_t));
+          else
+            {
+              if (!use_malloc)
+                wmessage = NULL;
+
+              wchar_t *p = (wchar_t *) realloc (wmessage,
+                                                len * sizeof (wchar_t));
+              if (p == NULL)
+                {
+                  free (wmessage);
+                  fputws_unlocked (L"out of memory\n", stderr);
+                  return;
+                }
+              wmessage = p;
+              use_malloc = true;
+            }
+
+          memset (&st, '\0', sizeof (st));
+          tmp = message;
+
+          res = mbsrtowcs (wmessage, &tmp, len, &st);
+          if (res != len)
+            break;
+
+          if (__builtin_expect (len >= SIZE_MAX / sizeof (wchar_t) / 2, 0))
+            {
+              /* This really should not happen if everything is fine.  */
+              res = (size_t) -1;
+              break;
+            }
+
+          len *= 2;
+        }
+
+      if (res == (size_t) -1)
+        {
+          /* The string cannot be converted.  */
+          if (use_malloc)
+            {
+              free (wmessage);
+              use_malloc = false;
+            }
+          wmessage = (wchar_t *) L"???";
+        }
+
+      __vfwprintf (stderr, wmessage, args);
+
+      if (use_malloc)
+        free (wmessage);
+    }
+  else
+#endif
+    vfprintf (stderr, message, args);
+
+  ++error_message_count;
+  if (errnum)
+    print_errno_message (errnum);
+#if _LIBC
+  __fxprintf (NULL, "\n");
+#else
+  putc ('\n', stderr);
+#endif
+  fflush (stderr);
+  if (status)
+    exit (status);
+}
+
+
+/* Print the program name and error message MESSAGE, which is a printf-style
+   format string with optional args.
+   If ERRNUM is nonzero, print its corresponding system error message.
+   Exit with status STATUS if it is nonzero.  */
+void
+error (int status, int errnum, const char *message, ...)
+{
+  va_list args;
+
+#if defined _LIBC && defined __libc_ptf_call
+  /* We do not want this call to be cut short by a thread
+     cancellation.  Therefore disable cancellation for now.  */
+  int state = PTHREAD_CANCEL_ENABLE;
+  __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
+                   0);
+#endif
+
+  flush_stdout ();
+#ifdef _LIBC
+  _IO_flockfile (stderr);
+#endif
+  if (error_print_progname)
+    (*error_print_progname) ();
+  else
+    {
+#if _LIBC
+      __fxprintf (NULL, "%s: ", program_name);
+#else
+      fprintf (stderr, "%s: ", program_name);
+#endif
+    }
+
+  va_start (args, message);
+  error_tail (status, errnum, message, args);
+  va_end (args);
+
+#ifdef _LIBC
+  _IO_funlockfile (stderr);
+# ifdef __libc_ptf_call
+  __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
+# endif
+#endif
+}
+
+/* Sometimes we want to have at most one error per line.  This
+   variable controls whether this mode is selected or not.  */
+int error_one_per_line;
+
+void
+error_at_line (int status, int errnum, const char *file_name,
+               unsigned int line_number, const char *message, ...)
+{
+  va_list args;
+
+  if (error_one_per_line)
+    {
+      static const char *old_file_name;
+      static unsigned int old_line_number;
+
+      if (old_line_number == line_number
+          && (file_name == old_file_name
+              || (old_file_name != NULL
+                  && file_name != NULL
+                  && strcmp (old_file_name, file_name) == 0)))
+
+        /* Simply return and print nothing.  */
+        return;
+
+      old_file_name = file_name;
+      old_line_number = line_number;
+    }
+
+#if defined _LIBC && defined __libc_ptf_call
+  /* We do not want this call to be cut short by a thread
+     cancellation.  Therefore disable cancellation for now.  */
+  int state = PTHREAD_CANCEL_ENABLE;
+  __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
+                   0);
+#endif
+
+  flush_stdout ();
+#ifdef _LIBC
+  _IO_flockfile (stderr);
+#endif
+  if (error_print_progname)
+    (*error_print_progname) ();
+  else
+    {
+#if _LIBC
+      __fxprintf (NULL, "%s:", program_name);
+#else
+      fprintf (stderr, "%s:", program_name);
+#endif
+    }
+
+#if _LIBC
+  __fxprintf (NULL, file_name != NULL ? "%s:%u: " : " ",
+              file_name, line_number);
+#else
+  fprintf (stderr, file_name != NULL ? "%s:%u: " : " ",
+           file_name, line_number);
+#endif
+
+  va_start (args, message);
+  error_tail (status, errnum, message, args);
+  va_end (args);
+
+#ifdef _LIBC
+  _IO_funlockfile (stderr);
+# ifdef __libc_ptf_call
+  __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
+# endif
+#endif
+}
+
+#ifdef _LIBC
+/* Make the weak alias.  */
+# undef error
+# undef error_at_line
+weak_alias (__error, error)
+weak_alias (__error_at_line, error_at_line)
+#endif
diff --git a/src/grep/lib/error.h b/src/grep/lib/error.h
new file mode 100644
index 0000000..814715e
--- /dev/null
+++ b/src/grep/lib/error.h
@@ -0,0 +1,66 @@
+/* Declaration for error-reporting function
+   Copyright (C) 1995-1997, 2003, 2006, 2008-2021 Free Software Foundation,
+   Inc.
+   This file is part of the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _ERROR_H
+#define _ERROR_H 1
+
+/* Get _GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, _GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM.  */
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Print a message with 'fprintf (stderr, FORMAT, ...)';
+   if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
+   If STATUS is nonzero, terminate the program with 'exit (STATUS)'.  */
+
+extern void error (int __status, int __errnum, const char *__format, ...)
+#if GNULIB_VFPRINTF_POSIX
+     _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 4))
+#else
+     _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM, 3, 4))
+#endif
+     ;
+
+extern void error_at_line (int __status, int __errnum, const char *__fname,
+                           unsigned int __lineno, const char *__format, ...)
+#if GNULIB_VFPRINTF_POSIX
+     _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 5, 6))
+#else
+     _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM, 5, 6))
+#endif
+     ;
+
+/* If NULL, error will flush stdout, then print on stderr the program
+   name, a colon and a space.  Otherwise, error will call this
+   function without parameters instead.  */
+extern void (*error_print_progname) (void);
+
+/* This variable is incremented each time 'error' is called.  */
+extern unsigned int error_message_count;
+
+/* Sometimes we want to have at most one error per line.  This
+   variable controls whether this mode is selected or not.  */
+extern int error_one_per_line;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* error.h */
diff --git a/src/grep/lib/exclude.c b/src/grep/lib/exclude.c
new file mode 100644
index 0000000..417ab23
--- /dev/null
+++ b/src/grep/lib/exclude.c
@@ -0,0 +1,692 @@
+/* exclude.c -- exclude file names
+
+   Copyright (C) 1992-1994, 1997, 1999-2007, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert <eggert@twinsun.com>
+   and Sergey Poznyakoff <gray@gnu.org>.
+   Thanks to Phil Proudman <phil@proudman51.freeserve.co.uk>
+   for improvement suggestions. */
+
+#include <config.h>
+
+#include <stdbool.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wctype.h>
+#include <regex.h>
+
+#include "exclude.h"
+#include "hash.h"
+#include "mbuiter.h"
+#include "fnmatch.h"
+#include "xalloc.h"
+#include "verify.h"
+#include "filename.h"
+
+#if GNULIB_EXCLUDE_SINGLE_THREAD
+# include "unlocked-io.h"
+#endif
+
+/* Non-GNU systems lack these options, so we don't need to check them.  */
+#ifndef FNM_CASEFOLD
+# define FNM_CASEFOLD 0
+#endif
+#ifndef FNM_EXTMATCH
+# define FNM_EXTMATCH 0
+#endif
+#ifndef FNM_LEADING_DIR
+# define FNM_LEADING_DIR 0
+#endif
+
+verify (((EXCLUDE_ANCHORED | EXCLUDE_INCLUDE | EXCLUDE_WILDCARDS)
+         & (FNM_PATHNAME | FNM_NOESCAPE | FNM_PERIOD | FNM_LEADING_DIR
+            | FNM_CASEFOLD | FNM_EXTMATCH))
+        == 0);
+
+
+/* Exclusion patterns are grouped into a singly-linked list of
+   "exclusion segments".  Each segment represents a set of patterns
+   that can be matches using the same algorithm.  Non-wildcard
+   patterns are kept in hash tables, to speed up searches.  Wildcard
+   patterns are stored as arrays of patterns. */
+
+
+/* An exclude pattern-options pair.  The options are fnmatch options
+   ORed with EXCLUDE_* options.  */
+
+struct patopts
+  {
+    int options;
+    union
+    {
+      char const *pattern;
+      regex_t re;
+    } v;
+  };
+
+/* An array of pattern-options pairs.  */
+
+struct exclude_pattern
+  {
+    struct patopts *exclude;
+    idx_t exclude_alloc;
+    idx_t exclude_count;
+  };
+
+enum exclude_type
+  {
+    exclude_hash,                    /* a hash table of excluded names */
+    exclude_pattern                  /* an array of exclude patterns */
+  };
+
+struct exclude_segment
+  {
+    struct exclude_segment *next;    /* next segment in list */
+    enum exclude_type type;          /* type of this segment */
+    int options;                     /* common options for this segment */
+    union
+    {
+      Hash_table *table;             /* for type == exclude_hash */
+      struct exclude_pattern pat;    /* for type == exclude_pattern */
+    } v;
+  };
+
+struct pattern_buffer
+  {
+    struct pattern_buffer *next;
+    char *base;
+  };
+
+/* The exclude structure keeps a singly-linked list of exclude segments,
+   maintained in reverse order.  */
+struct exclude
+  {
+    struct exclude_segment *head;
+    struct pattern_buffer *patbuf;
+  };
+
+/* Register BUF in the pattern buffer list of EX.  ADD_FUNC (see
+   add_exclude_file and add_exclude_fp below) can use this function
+   if it modifies the pattern, to ensure the allocated memory will be
+   properly reclaimed upon calling free_exclude. */
+void
+exclude_add_pattern_buffer (struct exclude *ex, char *buf)
+{
+  struct pattern_buffer *pbuf = xmalloc (sizeof *pbuf);
+  pbuf->base = buf;
+  pbuf->next = ex->patbuf;
+  ex->patbuf = pbuf;
+}
+
+/* Return true if STR has or may have wildcards, when matched with OPTIONS.
+   Return false if STR definitely does not have wildcards.  */
+bool
+fnmatch_pattern_has_wildcards (const char *str, int options)
+{
+  while (1)
+    {
+      switch (*str++)
+        {
+        case '.':
+        case '{':
+        case '}':
+        case '(':
+        case ')':
+          if (options & EXCLUDE_REGEX)
+            return true;
+          break;
+
+        case '\\':
+          if (options & EXCLUDE_REGEX)
+            continue;
+          else
+            str += ! (options & FNM_NOESCAPE) && *str;
+          break;
+
+        case '+': case '@': case '!':
+          if (options & FNM_EXTMATCH && *str == '(')
+            return true;
+          break;
+
+        case '?': case '*': case '[':
+          return true;
+
+        case '\0':
+          return false;
+        }
+    }
+}
+
+static void
+unescape_pattern (char *str)
+{
+  char const *q = str;
+  do
+    q += *q == '\\' && q[1];
+  while ((*str++ = *q++));
+}
+
+/* Return a newly allocated and empty exclude list.  */
+
+struct exclude *
+new_exclude (void)
+{
+  return xzalloc (sizeof *new_exclude ());
+}
+
+/* Calculate the hash of string.  */
+static size_t
+string_hasher (void const *data, size_t n_buckets)
+{
+  char const *p = data;
+  return hash_string (p, n_buckets);
+}
+
+/* Ditto, for case-insensitive hashes */
+static size_t
+string_hasher_ci (void const *data, size_t n_buckets)
+{
+  char const *p = data;
+  mbui_iterator_t iter;
+  size_t value = 0;
+
+  for (mbui_init (iter, p); mbui_avail (iter); mbui_advance (iter))
+    {
+      mbchar_t m = mbui_cur (iter);
+      wchar_t wc;
+
+      if (m.wc_valid)
+        wc = towlower (m.wc);
+      else
+        wc = *m.ptr;
+
+      value = value * 31 + wc;
+    }
+
+  return value % n_buckets;
+}
+
+/* compare two strings for equality */
+static bool
+string_compare (void const *data1, void const *data2)
+{
+  char const *p1 = data1;
+  char const *p2 = data2;
+  return strcmp (p1, p2) == 0;
+}
+
+/* compare two strings for equality, case-insensitive */
+static bool
+string_compare_ci (void const *data1, void const *data2)
+{
+  char const *p1 = data1;
+  char const *p2 = data2;
+  return mbscasecmp (p1, p2) == 0;
+}
+
+static void
+string_free (void *data)
+{
+  free (data);
+}
+
+/* Create new exclude segment of given TYPE and OPTIONS, and attach it
+   to the head of EX.  */
+static void
+new_exclude_segment (struct exclude *ex, enum exclude_type type, int options)
+{
+  struct exclude_segment *sp = xzalloc (sizeof (struct exclude_segment));
+  sp->type = type;
+  sp->options = options;
+  switch (type)
+    {
+    case exclude_pattern:
+      break;
+
+    case exclude_hash:
+      sp->v.table = hash_initialize (0, NULL,
+                                     (options & FNM_CASEFOLD) ?
+                                       string_hasher_ci
+                                       : string_hasher,
+                                     (options & FNM_CASEFOLD) ?
+                                       string_compare_ci
+                                       : string_compare,
+                                     string_free);
+      break;
+    }
+  sp->next = ex->head;
+  ex->head = sp;
+}
+
+/* Free a single exclude segment */
+static void
+free_exclude_segment (struct exclude_segment *seg)
+{
+  switch (seg->type)
+    {
+    case exclude_pattern:
+      for (idx_t i = 0; i < seg->v.pat.exclude_count; i++)
+        {
+          if (seg->v.pat.exclude[i].options & EXCLUDE_REGEX)
+            regfree (&seg->v.pat.exclude[i].v.re);
+        }
+      free (seg->v.pat.exclude);
+      break;
+
+    case exclude_hash:
+      hash_free (seg->v.table);
+      break;
+    }
+  free (seg);
+}
+
+/* Free the storage associated with an exclude list.  */
+void
+free_exclude (struct exclude *ex)
+{
+  struct exclude_segment *seg;
+  struct pattern_buffer *pbuf;
+
+  for (seg = ex->head; seg; )
+    {
+      struct exclude_segment *next = seg->next;
+      free_exclude_segment (seg);
+      seg = next;
+    }
+
+  for (pbuf = ex->patbuf; pbuf; )
+    {
+      struct pattern_buffer *next = pbuf->next;
+      free (pbuf->base);
+      free (pbuf);
+      pbuf = next;
+    }
+
+  free (ex);
+}
+
+/* Return zero if PATTERN matches F, obeying OPTIONS, except that
+   (unlike fnmatch) wildcards are disabled in PATTERN.  */
+
+static int
+fnmatch_no_wildcards (char const *pattern, char const *f, int options)
+{
+  if (! (options & FNM_LEADING_DIR))
+    return ((options & FNM_CASEFOLD)
+            ? mbscasecmp (pattern, f)
+            : strcmp (pattern, f));
+  else if (! (options & FNM_CASEFOLD))
+    {
+      size_t patlen = strlen (pattern);
+      int r = strncmp (pattern, f, patlen);
+      if (! r)
+        {
+          r = f[patlen];
+          if (r == '/')
+            r = 0;
+        }
+      return r;
+    }
+  else
+    {
+      /* Walk through a copy of F, seeing whether P matches any prefix
+         of F.
+
+         FIXME: This is an O(N**2) algorithm; it should be O(N).
+         Also, the copy should not be necessary.  However, fixing this
+         will probably involve a change to the mbs* API.  */
+
+      char *fcopy = xstrdup (f);
+      char *p;
+      int r;
+      for (p = fcopy; ; *p++ = '/')
+        {
+          p = strchr (p, '/');
+          if (p)
+            *p = '\0';
+          r = mbscasecmp (pattern, fcopy);
+          if (!p || r <= 0)
+            break;
+        }
+      free (fcopy);
+      return r;
+    }
+}
+
+bool
+exclude_fnmatch (char const *pattern, char const *f, int options)
+{
+  int (*matcher) (char const *, char const *, int) =
+    (options & EXCLUDE_WILDCARDS
+     ? fnmatch
+     : fnmatch_no_wildcards);
+  bool matched = ((*matcher) (pattern, f, options) == 0);
+  char const *p;
+
+  if (! (options & EXCLUDE_ANCHORED))
+    for (p = f; *p && ! matched; p++)
+      if (*p == '/' && p[1] != '/')
+        matched = ((*matcher) (pattern, p + 1, options) == 0);
+
+  return matched;
+}
+
+static bool
+exclude_patopts (struct patopts const *opts, char const *f)
+{
+  int options = opts->options;
+
+  return (options & EXCLUDE_REGEX)
+          ? regexec (&opts->v.re, f, 0, NULL, 0) == 0
+          : exclude_fnmatch (opts->v.pattern, f, options);
+}
+
+/* Return true if the exclude_pattern segment SEG matches F.  */
+
+static bool
+file_pattern_matches (struct exclude_segment const *seg, char const *f)
+{
+  idx_t exclude_count = seg->v.pat.exclude_count;
+  struct patopts const *exclude = seg->v.pat.exclude;
+
+  for (idx_t i = 0; i < exclude_count; i++)
+    {
+      if (exclude_patopts (exclude + i, f))
+        return true;
+    }
+  return false;
+}
+
+/* Return true if the exclude_hash segment SEG matches F.
+   BUFFER is an auxiliary storage of the same length as F (with nul
+   terminator included) */
+static bool
+file_name_matches (struct exclude_segment const *seg, char const *f,
+                   char *buffer)
+{
+  int options = seg->options;
+  Hash_table *table = seg->v.table;
+
+  do
+    {
+      /* initialize the pattern */
+      strcpy (buffer, f);
+
+      while (1)
+        {
+          if (hash_lookup (table, buffer))
+            return true;
+          if (options & FNM_LEADING_DIR)
+            {
+              char *p = strrchr (buffer, '/');
+              if (p)
+                {
+                  *p = 0;
+                  continue;
+                }
+            }
+          break;
+        }
+
+      if (!(options & EXCLUDE_ANCHORED))
+        {
+          f = strchr (f, '/');
+          if (f)
+            f++;
+        }
+      else
+        break;
+    }
+  while (f);
+
+  return false;
+}
+
+/* Return true if EX excludes F.  */
+
+bool
+excluded_file_name (struct exclude const *ex, char const *f)
+{
+  struct exclude_segment *seg;
+  bool invert = false;
+  char *filename = NULL;
+
+  /* If no patterns are given, the default is to include.  */
+  if (!ex->head)
+    return false;
+
+  /* Scan through the segments, reporting the status of the first match.
+     The segments are in reverse order, so this reports the status of
+     the last match in the original option list.  */
+  for (seg = ex->head; ; seg = seg->next)
+    {
+      if (seg->type == exclude_hash)
+        {
+          if (!filename)
+            filename = xmalloc (strlen (f) + 1);
+          if (file_name_matches (seg, f, filename))
+            break;
+        }
+      else
+        {
+          if (file_pattern_matches (seg, f))
+            break;
+        }
+
+      if (! seg->next)
+        {
+          /* If patterns are given but none match, the default is the
+             opposite of the last segment (i.e., the first in the
+             original option list).  For example, in the command
+             'grep -r --exclude="a*" --include="*b" pat dir', the
+             first option is --exclude so any file name matching
+             neither a* nor *b is included.  */
+          invert = true;
+          break;
+        }
+    }
+
+  free (filename);
+  return invert ^ ! (seg->options & EXCLUDE_INCLUDE);
+}
+
+/* Append to EX the exclusion PATTERN with OPTIONS.  */
+
+void
+add_exclude (struct exclude *ex, char const *pattern, int options)
+{
+  struct exclude_segment *seg;
+  struct exclude_pattern *pat;
+  struct patopts *patopts;
+
+  if ((options & (EXCLUDE_REGEX|EXCLUDE_WILDCARDS))
+      && fnmatch_pattern_has_wildcards (pattern, options))
+    {
+      if (! (ex->head && ex->head->type == exclude_pattern
+             && ((ex->head->options & EXCLUDE_INCLUDE)
+                 == (options & EXCLUDE_INCLUDE))))
+        new_exclude_segment (ex, exclude_pattern, options);
+
+      seg = ex->head;
+
+      pat = &seg->v.pat;
+      if (pat->exclude_count == pat->exclude_alloc)
+        pat->exclude = xpalloc (pat->exclude, &pat->exclude_alloc, 1, -1,
+                                sizeof *pat->exclude);
+      patopts = &pat->exclude[pat->exclude_count++];
+
+      patopts->options = options;
+      if (options & EXCLUDE_REGEX)
+        {
+          int rc;
+          int cflags = REG_NOSUB|REG_EXTENDED|
+                       ((options & FNM_CASEFOLD) ? REG_ICASE : 0);
+
+          if (options & FNM_LEADING_DIR)
+            {
+              char *tmp;
+              idx_t len = strlen (pattern);
+
+              while (len > 0 && ISSLASH (pattern[len-1]))
+                --len;
+
+              if (len == 0)
+                rc = 1;
+              else
+                {
+                  tmp = ximalloc (len + 7);
+                  memcpy (tmp, pattern, len);
+                  strcpy (tmp + len, "(/.*)?");
+                  rc = regcomp (&patopts->v.re, tmp, cflags);
+                  free (tmp);
+                }
+            }
+          else
+            rc = regcomp (&patopts->v.re, pattern, cflags);
+
+          if (rc)
+            {
+              pat->exclude_count--;
+              return;
+            }
+        }
+      else
+        {
+          if (options & EXCLUDE_ALLOC)
+            {
+              pattern = xstrdup (pattern);
+              exclude_add_pattern_buffer (ex, (char*) pattern);
+            }
+          patopts->v.pattern = pattern;
+        }
+    }
+  else
+    {
+      char *str, *p;
+      int exclude_hash_flags = (EXCLUDE_INCLUDE | EXCLUDE_ANCHORED
+                                | FNM_LEADING_DIR | FNM_CASEFOLD);
+      if (! (ex->head && ex->head->type == exclude_hash
+             && ((ex->head->options & exclude_hash_flags)
+                 == (options & exclude_hash_flags))))
+        new_exclude_segment (ex, exclude_hash, options);
+      seg = ex->head;
+
+      str = xstrdup (pattern);
+      if ((options & (EXCLUDE_WILDCARDS | FNM_NOESCAPE)) == EXCLUDE_WILDCARDS)
+        unescape_pattern (str);
+      p = hash_insert (seg->v.table, str);
+      if (p != str)
+        free (str);
+    }
+}
+
+/* Use ADD_FUNC to append to EX the patterns in FILE_NAME, each with
+   OPTIONS.  LINE_END terminates each pattern in the file.  If
+   LINE_END is a space character, ignore trailing spaces and empty
+   lines in FP.  Return -1 on failure, 0 on success.  */
+
+int
+add_exclude_fp (void (*add_func) (struct exclude *, char const *, int, void *),
+                struct exclude *ex, FILE *fp, int options,
+                char line_end,
+                void *data)
+{
+  char *buf = NULL;
+  char *p;
+  char *pattern;
+  char const *lim;
+  idx_t buf_alloc = 0;
+  idx_t buf_count = 0;
+  int c;
+  int e = 0;
+
+  while ((c = getc (fp)) != EOF)
+    {
+      if (buf_count == buf_alloc)
+        buf = xpalloc (buf, &buf_alloc, 1, -1, 1);
+      buf[buf_count++] = c;
+    }
+
+  if (ferror (fp))
+    e = errno;
+
+  buf = xirealloc (buf, buf_count + 1);
+  buf[buf_count] = line_end;
+  lim = buf + buf_count + ! (buf_count == 0 || buf[buf_count - 1] == line_end);
+
+  exclude_add_pattern_buffer (ex, buf);
+
+  pattern = buf;
+
+  for (p = buf; p < lim; p++)
+    if (*p == line_end)
+      {
+        char *pattern_end = p;
+
+        if (isspace ((unsigned char) line_end))
+          {
+            for (; ; pattern_end--)
+              if (pattern_end == pattern)
+                goto next_pattern;
+              else if (! isspace ((unsigned char) pattern_end[-1]))
+                break;
+          }
+
+        *pattern_end = '\0';
+        (*add_func) (ex, pattern, options, data);
+
+      next_pattern:
+        pattern = p + 1;
+      }
+
+  errno = e;
+  return e ? -1 : 0;
+}
+
+static void
+call_addfn (struct exclude *ex, char const *pattern, int options, void *data)
+{
+  void (**addfnptr) (struct exclude *, char const *, int) = data;
+  (*addfnptr) (ex, pattern, options);
+}
+
+int
+add_exclude_file (void (*add_func) (struct exclude *, char const *, int),
+                  struct exclude *ex, char const *file_name, int options,
+                  char line_end)
+{
+  bool use_stdin = file_name[0] == '-' && !file_name[1];
+  FILE *in;
+  int rc = 0;
+
+  if (use_stdin)
+    in = stdin;
+  else if (! (in = fopen (file_name, "re")))
+    return -1;
+
+  rc = add_exclude_fp (call_addfn, ex, in, options, line_end, &add_func);
+
+  if (!use_stdin && fclose (in) != 0)
+    rc = -1;
+
+  return rc;
+}
diff --git a/src/grep/lib/exclude.h b/src/grep/lib/exclude.h
new file mode 100644
index 0000000..8d6581a
--- /dev/null
+++ b/src/grep/lib/exclude.h
@@ -0,0 +1,65 @@
+/* exclude.h -- declarations for excluding file names
+
+   Copyright (C) 1992-1994, 1997, 1999, 2001-2003, 2005-2006, 2009-2021 Free
+   Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_EXCLUDE_H
+#define _GL_EXCLUDE_H 1
+
+#include <stdbool.h>
+#include <stdio.h>
+
+/* Written by Paul Eggert <eggert@twinsun.com>
+   and Sergey Poznyakoff <gray@gnu.org> */
+
+/* Exclude options, which can be ORed with fnmatch options.  */
+
+/* Patterns must match the start of file names, instead of matching
+   anywhere after a '/'.  */
+#define EXCLUDE_ANCHORED (1 << 30)
+
+/* Include instead of exclude.  */
+#define EXCLUDE_INCLUDE (1 << 29)
+
+/* '?', '*', '[', and '\\' are special in patterns.  Without this
+   option, these characters are ordinary and fnmatch is not used.  */
+#define EXCLUDE_WILDCARDS (1 << 28)
+
+/* Patterns are POSIX extended regular expressions */
+#define EXCLUDE_REGEX     (1 << 27)
+
+/* Allocate storage for the pattern */
+#define EXCLUDE_ALLOC     (1 << 26)
+
+struct exclude;
+
+bool fnmatch_pattern_has_wildcards (const char *, int) _GL_ATTRIBUTE_PURE;
+
+void free_exclude (struct exclude *)
+  _GL_ATTRIBUTE_NONNULL ((1));
+struct exclude *new_exclude (void)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_RETURNS_NONNULL
+  _GL_ATTRIBUTE_DEALLOC (free_exclude, 1);
+void add_exclude (struct exclude *, char const *, int);
+int add_exclude_file (void (*) (struct exclude *, char const *, int),
+                      struct exclude *, char const *, int, char);
+int add_exclude_fp (void (*) (struct exclude *, char const *, int, void *),
+                    struct exclude *, FILE *, int, char, void *);
+bool excluded_file_name (struct exclude const *, char const *);
+void exclude_add_pattern_buffer (struct exclude *ex, char *buf);
+bool exclude_fnmatch (char const *, char const *, int);
+
+#endif /* _GL_EXCLUDE_H */
diff --git a/src/grep/lib/exitfail.c b/src/grep/lib/exitfail.c
new file mode 100644
index 0000000..ebc1f58
--- /dev/null
+++ b/src/grep/lib/exitfail.c
@@ -0,0 +1,24 @@
+/* Failure exit status
+
+   Copyright (C) 2002-2003, 2005-2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "exitfail.h"
+
+#include <stdlib.h>
+
+int volatile exit_failure = EXIT_FAILURE;
diff --git a/src/grep/lib/exitfail.h b/src/grep/lib/exitfail.h
new file mode 100644
index 0000000..4add9e0
--- /dev/null
+++ b/src/grep/lib/exitfail.h
@@ -0,0 +1,18 @@
+/* Failure exit status
+
+   Copyright (C) 2002, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+extern int volatile exit_failure;
diff --git a/src/grep/lib/fchdir.c b/src/grep/lib/fchdir.c
new file mode 100644
index 0000000..b5ed4df
--- /dev/null
+++ b/src/grep/lib/fchdir.c
@@ -0,0 +1,206 @@
+/* fchdir replacement.
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "assure.h"
+#include "filename.h"
+#include "filenamecat.h"
+
+#ifndef REPLACE_OPEN_DIRECTORY
+# define REPLACE_OPEN_DIRECTORY 0
+#endif
+
+/* This replacement assumes that a directory is not renamed while opened
+   through a file descriptor.
+
+   FIXME: On mingw, this would be possible to enforce if we were to
+   also open a HANDLE to each directory currently visited by a file
+   descriptor, since mingw refuses to rename any in-use file system
+   object.  */
+
+/* Array of file descriptors opened.  If REPLACE_OPEN_DIRECTORY or if it points
+   to a directory, it stores info about this directory.  */
+typedef struct
+{
+  char *name;       /* Absolute name of the directory, or NULL.  */
+  /* FIXME - add a DIR* member to make dirfd possible on mingw?  */
+} dir_info_t;
+static dir_info_t *dirs;
+static size_t dirs_allocated;
+
+/* Try to ensure dirs has enough room for a slot at index fd; free any
+   contents already in that slot.  Return false and set errno to
+   ENOMEM on allocation failure.  */
+static bool
+ensure_dirs_slot (size_t fd)
+{
+  if (fd < dirs_allocated)
+    free (dirs[fd].name);
+  else
+    {
+      size_t new_allocated;
+      dir_info_t *new_dirs;
+
+      new_allocated = 2 * dirs_allocated + 1;
+      if (new_allocated <= fd)
+        new_allocated = fd + 1;
+      new_dirs =
+        (dirs != NULL
+         ? (dir_info_t *) realloc (dirs, new_allocated * sizeof *dirs)
+         : (dir_info_t *) malloc (new_allocated * sizeof *dirs));
+      if (new_dirs == NULL)
+        return false;
+      memset (new_dirs + dirs_allocated, 0,
+              (new_allocated - dirs_allocated) * sizeof *dirs);
+      dirs = new_dirs;
+      dirs_allocated = new_allocated;
+    }
+  return true;
+}
+
+/* Return an absolute name of DIR in malloc'd storage.
+   Upon failure, return NULL with errno set.  */
+static char *
+get_name (char const *dir)
+{
+  char *cwd;
+  char *result;
+
+  if (IS_ABSOLUTE_FILE_NAME (dir))
+    return strdup (dir);
+
+  /* We often encounter "."; treat it as a special case.  */
+  cwd = getcwd (NULL, 0);
+  if (!cwd || (dir[0] == '.' && dir[1] == '\0'))
+    return cwd;
+
+  result = mfile_name_concat (cwd, dir, NULL);
+  free (cwd);
+  return result;
+}
+
+/* Hook into the gnulib replacements for open() and close() to keep track
+   of the open file descriptors.  */
+
+/* Close FD, cleaning up any fd to name mapping if fd was visiting a
+   directory.  */
+void
+_gl_unregister_fd (int fd)
+{
+  if (fd >= 0 && fd < dirs_allocated)
+    {
+      free (dirs[fd].name);
+      dirs[fd].name = NULL;
+    }
+}
+
+/* Mark FD as visiting FILENAME.  FD must be non-negative, and refer
+   to an open file descriptor.  If REPLACE_OPEN_DIRECTORY is non-zero,
+   this should only be called if FD is visiting a directory.  Close FD
+   and return -1 with errno set if there is insufficient memory to track
+   the directory name; otherwise return FD.  */
+int
+_gl_register_fd (int fd, const char *filename)
+{
+  struct stat statbuf;
+
+  assure (0 <= fd);
+  if (REPLACE_OPEN_DIRECTORY
+      || (fstat (fd, &statbuf) == 0 && S_ISDIR (statbuf.st_mode)))
+    {
+      if (!ensure_dirs_slot (fd)
+          || (dirs[fd].name = get_name (filename)) == NULL)
+        {
+          int saved_errno = errno;
+          close (fd);
+          errno = saved_errno;
+          return -1;
+        }
+    }
+  return fd;
+}
+
+/* Mark NEWFD as a duplicate of OLDFD; useful from dup, dup2, dup3,
+   and fcntl.  Both arguments must be valid and distinct file
+   descriptors.  Close NEWFD and return -1 if OLDFD is tracking a
+   directory, but there is insufficient memory to track the same
+   directory in NEWFD; otherwise return NEWFD.  */
+int
+_gl_register_dup (int oldfd, int newfd)
+{
+  assure (0 <= oldfd && 0 <= newfd && oldfd != newfd);
+  if (oldfd < dirs_allocated && dirs[oldfd].name)
+    {
+      /* Duplicated a directory; must ensure newfd is allocated.  */
+      if (!ensure_dirs_slot (newfd)
+          || (dirs[newfd].name = strdup (dirs[oldfd].name)) == NULL)
+        {
+          int saved_errno = errno;
+          close (newfd);
+          errno = saved_errno;
+          newfd = -1;
+        }
+    }
+  else if (newfd < dirs_allocated)
+    {
+      /* Duplicated a non-directory; ensure newfd is cleared.  */
+      free (dirs[newfd].name);
+      dirs[newfd].name = NULL;
+    }
+  return newfd;
+}
+
+/* If FD is currently visiting a directory, then return the name of
+   that directory.  Otherwise, return NULL and set errno.  */
+const char *
+_gl_directory_name (int fd)
+{
+  if (0 <= fd && fd < dirs_allocated && dirs[fd].name != NULL)
+    return dirs[fd].name;
+  /* At this point, fd is either invalid, or open but not a directory.
+     If dup2 fails, errno is correctly EBADF.  */
+  if (0 <= fd)
+    {
+      if (dup2 (fd, fd) == fd)
+        errno = ENOTDIR;
+    }
+  else
+    errno = EBADF;
+  return NULL;
+}
+
+
+/* Implement fchdir() in terms of chdir().  */
+
+int
+fchdir (int fd)
+{
+  const char *name = _gl_directory_name (fd);
+  return name ? chdir (name) : -1;
+}
diff --git a/src/grep/lib/fcntl--.h b/src/grep/lib/fcntl--.h
new file mode 100644
index 0000000..9b01f38
--- /dev/null
+++ b/src/grep/lib/fcntl--.h
@@ -0,0 +1,32 @@
+/* Like fcntl.h, but redefine some names to avoid glitches.
+
+   Copyright (C) 2005, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <fcntl.h>
+#include "fcntl-safer.h"
+
+#undef open
+#define open open_safer
+
+#undef creat
+#define creat creat_safer
+
+#if GNULIB_OPENAT_SAFER
+# undef openat
+# define openat openat_safer
+#endif
diff --git a/src/grep/lib/fcntl-safer.h b/src/grep/lib/fcntl-safer.h
new file mode 100644
index 0000000..68dd9ae
--- /dev/null
+++ b/src/grep/lib/fcntl-safer.h
@@ -0,0 +1,27 @@
+/* Invoke fcntl-like functions, but avoid some glitches.
+
+   Copyright (C) 2005, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <sys/types.h>
+
+int open_safer (char const *, int, ...);
+int creat_safer (char const *, mode_t);
+
+#if GNULIB_OPENAT_SAFER
+int openat_safer (int, char const *, int, ...);
+#endif
diff --git a/src/grep/lib/fcntl.c b/src/grep/lib/fcntl.c
new file mode 100644
index 0000000..c744eb9
--- /dev/null
+++ b/src/grep/lib/fcntl.c
@@ -0,0 +1,629 @@
+/* Provide file descriptor control.
+
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <fcntl.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#ifdef __KLIBC__
+# define INCL_DOS
+# include <os2.h>
+#endif
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+
+/* Upper bound on getdtablesize().  See lib/getdtablesize.c.  */
+# define OPEN_MAX_MAX 0x10000
+
+/* Duplicate OLDFD into the first available slot of at least NEWFD,
+   which must be positive, with FLAGS determining whether the duplicate
+   will be inheritable.  */
+static int
+dupfd (int oldfd, int newfd, int flags)
+{
+  /* Mingw has no way to create an arbitrary fd.  Iterate until all
+     file descriptors less than newfd are filled up.  */
+  HANDLE curr_process = GetCurrentProcess ();
+  HANDLE old_handle = (HANDLE) _get_osfhandle (oldfd);
+  unsigned char fds_to_close[OPEN_MAX_MAX / CHAR_BIT];
+  unsigned int fds_to_close_bound = 0;
+  int result;
+  BOOL inherit = flags & O_CLOEXEC ? FALSE : TRUE;
+  int mode;
+
+  if (newfd < 0 || getdtablesize () <= newfd)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  if (old_handle == INVALID_HANDLE_VALUE
+      || (mode = _setmode (oldfd, O_BINARY)) == -1)
+    {
+      /* oldfd is not open, or is an unassigned standard file
+         descriptor.  */
+      errno = EBADF;
+      return -1;
+    }
+  _setmode (oldfd, mode);
+  flags |= mode;
+
+  for (;;)
+    {
+      HANDLE new_handle;
+      int duplicated_fd;
+      unsigned int index;
+
+      if (!DuplicateHandle (curr_process,           /* SourceProcessHandle */
+                            old_handle,             /* SourceHandle */
+                            curr_process,           /* TargetProcessHandle */
+                            (PHANDLE) &new_handle,  /* TargetHandle */
+                            (DWORD) 0,              /* DesiredAccess */
+                            inherit,                /* InheritHandle */
+                            DUPLICATE_SAME_ACCESS)) /* Options */
+        {
+          switch (GetLastError ())
+            {
+              case ERROR_TOO_MANY_OPEN_FILES:
+                errno = EMFILE;
+                break;
+              case ERROR_INVALID_HANDLE:
+              case ERROR_INVALID_TARGET_HANDLE:
+              case ERROR_DIRECT_ACCESS_HANDLE:
+                errno = EBADF;
+                break;
+              case ERROR_INVALID_PARAMETER:
+              case ERROR_INVALID_FUNCTION:
+              case ERROR_INVALID_ACCESS:
+                errno = EINVAL;
+                break;
+              default:
+                errno = EACCES;
+                break;
+            }
+          result = -1;
+          break;
+        }
+      duplicated_fd = _open_osfhandle ((intptr_t) new_handle, flags);
+      if (duplicated_fd < 0)
+        {
+          CloseHandle (new_handle);
+          result = -1;
+          break;
+        }
+      if (newfd <= duplicated_fd)
+        {
+          result = duplicated_fd;
+          break;
+        }
+
+      /* Set the bit duplicated_fd in fds_to_close[].  */
+      index = (unsigned int) duplicated_fd / CHAR_BIT;
+      if (fds_to_close_bound <= index)
+        {
+          if (sizeof fds_to_close <= index)
+            /* Need to increase OPEN_MAX_MAX.  */
+            abort ();
+          memset (fds_to_close + fds_to_close_bound, '\0',
+                  index + 1 - fds_to_close_bound);
+          fds_to_close_bound = index + 1;
+        }
+      fds_to_close[index] |= 1 << ((unsigned int) duplicated_fd % CHAR_BIT);
+    }
+
+  /* Close the previous fds that turned out to be too small.  */
+  {
+    int saved_errno = errno;
+    unsigned int duplicated_fd;
+
+    for (duplicated_fd = 0;
+         duplicated_fd < fds_to_close_bound * CHAR_BIT;
+         duplicated_fd++)
+      if ((fds_to_close[duplicated_fd / CHAR_BIT]
+           >> (duplicated_fd % CHAR_BIT))
+          & 1)
+        close (duplicated_fd);
+
+    errno = saved_errno;
+  }
+
+# if REPLACE_FCHDIR
+  if (0 <= result)
+    result = _gl_register_dup (oldfd, result);
+# endif
+  return result;
+}
+#endif /* W32 */
+
+/* Forward declarations, because we '#undef fcntl' in the middle of this
+   compilation unit.  */
+/* Our implementation of fcntl (fd, F_DUPFD, target).  */
+static int rpl_fcntl_DUPFD (int fd, int target);
+/* Our implementation of fcntl (fd, F_DUPFD_CLOEXEC, target).  */
+static int rpl_fcntl_DUPFD_CLOEXEC (int fd, int target);
+#ifdef __KLIBC__
+/* Adds support for fcntl on directories.  */
+static int klibc_fcntl (int fd, int action, /* arg */...);
+#endif
+
+
+/* Perform the specified ACTION on the file descriptor FD, possibly
+   using the argument ARG further described below.  This replacement
+   handles the following actions, and forwards all others on to the
+   native fcntl.  An unrecognized ACTION returns -1 with errno set to
+   EINVAL.
+
+   F_DUPFD - duplicate FD, with int ARG being the minimum target fd.
+   If successful, return the duplicate, which will be inheritable;
+   otherwise return -1 and set errno.
+
+   F_DUPFD_CLOEXEC - duplicate FD, with int ARG being the minimum
+   target fd.  If successful, return the duplicate, which will not be
+   inheritable; otherwise return -1 and set errno.
+
+   F_GETFD - ARG need not be present.  If successful, return a
+   non-negative value containing the descriptor flags of FD (only
+   FD_CLOEXEC is portable, but other flags may be present); otherwise
+   return -1 and set errno.  */
+
+int
+fcntl (int fd, int action, /* arg */...)
+#undef fcntl
+#ifdef __KLIBC__
+# define fcntl klibc_fcntl
+#endif
+{
+  va_list arg;
+  int result = -1;
+  va_start (arg, action);
+  switch (action)
+    {
+    case F_DUPFD:
+      {
+        int target = va_arg (arg, int);
+        result = rpl_fcntl_DUPFD (fd, target);
+        break;
+      }
+
+    case F_DUPFD_CLOEXEC:
+      {
+        int target = va_arg (arg, int);
+        result = rpl_fcntl_DUPFD_CLOEXEC (fd, target);
+        break;
+      }
+
+#if !HAVE_FCNTL
+    case F_GETFD:
+      {
+# if defined _WIN32 && ! defined __CYGWIN__
+        HANDLE handle = (HANDLE) _get_osfhandle (fd);
+        DWORD flags;
+        if (handle == INVALID_HANDLE_VALUE
+            || GetHandleInformation (handle, &flags) == 0)
+          errno = EBADF;
+        else
+          result = (flags & HANDLE_FLAG_INHERIT) ? 0 : FD_CLOEXEC;
+# else /* !W32 */
+        /* Use dup2 to reject invalid file descriptors.  No way to
+           access this information, so punt.  */
+        if (0 <= dup2 (fd, fd))
+          result = 0;
+# endif /* !W32 */
+        break;
+      } /* F_GETFD */
+#endif /* !HAVE_FCNTL */
+
+      /* Implementing F_SETFD on mingw is not trivial - there is no
+         API for changing the O_NOINHERIT bit on an fd, and merely
+         changing the HANDLE_FLAG_INHERIT bit on the underlying handle
+         can lead to odd state.  It may be possible by duplicating the
+         handle, using _open_osfhandle with the right flags, then
+         using dup2 to move the duplicate onto the original, but that
+         is not supported for now.  */
+
+    default:
+      {
+#if HAVE_FCNTL
+        switch (action)
+          {
+          #ifdef F_BARRIERFSYNC                  /* macOS */
+          case F_BARRIERFSYNC:
+          #endif
+          #ifdef F_CHKCLEAN                      /* macOS */
+          case F_CHKCLEAN:
+          #endif
+          #ifdef F_CLOSEM                        /* NetBSD, HP-UX */
+          case F_CLOSEM:
+          #endif
+          #ifdef F_FLUSH_DATA                    /* macOS */
+          case F_FLUSH_DATA:
+          #endif
+          #ifdef F_FREEZE_FS                     /* macOS */
+          case F_FREEZE_FS:
+          #endif
+          #ifdef F_FULLFSYNC                     /* macOS */
+          case F_FULLFSYNC:
+          #endif
+          #ifdef F_GETCONFINED                   /* macOS */
+          case F_GETCONFINED:
+          #endif
+          #ifdef F_GETDEFAULTPROTLEVEL           /* macOS */
+          case F_GETDEFAULTPROTLEVEL:
+          #endif
+          #ifdef F_GETFD                         /* POSIX */
+          case F_GETFD:
+          #endif
+          #ifdef F_GETFL                         /* POSIX */
+          case F_GETFL:
+          #endif
+          #ifdef F_GETLEASE                      /* Linux */
+          case F_GETLEASE:
+          #endif
+          #ifdef F_GETNOSIGPIPE                  /* macOS */
+          case F_GETNOSIGPIPE:
+          #endif
+          #ifdef F_GETOWN                        /* POSIX */
+          case F_GETOWN:
+          #endif
+          #ifdef F_GETPIPE_SZ                    /* Linux */
+          case F_GETPIPE_SZ:
+          #endif
+          #ifdef F_GETPROTECTIONCLASS            /* macOS */
+          case F_GETPROTECTIONCLASS:
+          #endif
+          #ifdef F_GETPROTECTIONLEVEL            /* macOS */
+          case F_GETPROTECTIONLEVEL:
+          #endif
+          #ifdef F_GET_SEALS                     /* Linux */
+          case F_GET_SEALS:
+          #endif
+          #ifdef F_GETSIG                        /* Linux */
+          case F_GETSIG:
+          #endif
+          #ifdef F_MAXFD                         /* NetBSD */
+          case F_MAXFD:
+          #endif
+          #ifdef F_RECYCLE                       /* macOS */
+          case F_RECYCLE:
+          #endif
+          #ifdef F_SETFIFOENH                    /* HP-UX */
+          case F_SETFIFOENH:
+          #endif
+          #ifdef F_THAW_FS                       /* macOS */
+          case F_THAW_FS:
+          #endif
+            /* These actions take no argument.  */
+            result = fcntl (fd, action);
+            break;
+
+          #ifdef F_ADD_SEALS                     /* Linux */
+          case F_ADD_SEALS:
+          #endif
+          #ifdef F_BADFD                         /* Solaris */
+          case F_BADFD:
+          #endif
+          #ifdef F_CHECK_OPENEVT                 /* macOS */
+          case F_CHECK_OPENEVT:
+          #endif
+          #ifdef F_DUP2FD                        /* FreeBSD, AIX, Solaris */
+          case F_DUP2FD:
+          #endif
+          #ifdef F_DUP2FD_CLOEXEC                /* FreeBSD, Solaris */
+          case F_DUP2FD_CLOEXEC:
+          #endif
+          #ifdef F_DUP2FD_CLOFORK                /* Solaris */
+          case F_DUP2FD_CLOFORK:
+          #endif
+          #ifdef F_DUPFD                         /* POSIX */
+          case F_DUPFD:
+          #endif
+          #ifdef F_DUPFD_CLOEXEC                 /* POSIX */
+          case F_DUPFD_CLOEXEC:
+          #endif
+          #ifdef F_DUPFD_CLOFORK                 /* Solaris */
+          case F_DUPFD_CLOFORK:
+          #endif
+          #ifdef F_GETXFL                        /* Solaris */
+          case F_GETXFL:
+          #endif
+          #ifdef F_GLOBAL_NOCACHE                /* macOS */
+          case F_GLOBAL_NOCACHE:
+          #endif
+          #ifdef F_MAKECOMPRESSED                /* macOS */
+          case F_MAKECOMPRESSED:
+          #endif
+          #ifdef F_MOVEDATAEXTENTS               /* macOS */
+          case F_MOVEDATAEXTENTS:
+          #endif
+          #ifdef F_NOCACHE                       /* macOS */
+          case F_NOCACHE:
+          #endif
+          #ifdef F_NODIRECT                      /* macOS */
+          case F_NODIRECT:
+          #endif
+          #ifdef F_NOTIFY                        /* Linux */
+          case F_NOTIFY:
+          #endif
+          #ifdef F_OPLKACK                       /* IRIX */
+          case F_OPLKACK:
+          #endif
+          #ifdef F_OPLKREG                       /* IRIX */
+          case F_OPLKREG:
+          #endif
+          #ifdef F_RDAHEAD                       /* macOS */
+          case F_RDAHEAD:
+          #endif
+          #ifdef F_SETBACKINGSTORE               /* macOS */
+          case F_SETBACKINGSTORE:
+          #endif
+          #ifdef F_SETCONFINED                   /* macOS */
+          case F_SETCONFINED:
+          #endif
+          #ifdef F_SETFD                         /* POSIX */
+          case F_SETFD:
+          #endif
+          #ifdef F_SETFL                         /* POSIX */
+          case F_SETFL:
+          #endif
+          #ifdef F_SETLEASE                      /* Linux */
+          case F_SETLEASE:
+          #endif
+          #ifdef F_SETNOSIGPIPE                  /* macOS */
+          case F_SETNOSIGPIPE:
+          #endif
+          #ifdef F_SETOWN                        /* POSIX */
+          case F_SETOWN:
+          #endif
+          #ifdef F_SETPIPE_SZ                    /* Linux */
+          case F_SETPIPE_SZ:
+          #endif
+          #ifdef F_SETPROTECTIONCLASS            /* macOS */
+          case F_SETPROTECTIONCLASS:
+          #endif
+          #ifdef F_SETSIG                        /* Linux */
+          case F_SETSIG:
+          #endif
+          #ifdef F_SINGLE_WRITER                 /* macOS */
+          case F_SINGLE_WRITER:
+          #endif
+            /* These actions take an 'int' argument.  */
+            {
+              int x = va_arg (arg, int);
+              result = fcntl (fd, action, x);
+            }
+            break;
+
+          default:
+            /* Other actions take a pointer argument.  */
+            {
+              void *p = va_arg (arg, void *);
+              result = fcntl (fd, action, p);
+            }
+            break;
+          }
+#else
+        errno = EINVAL;
+#endif
+        break;
+      }
+    }
+  va_end (arg);
+  return result;
+}
+
+static int
+rpl_fcntl_DUPFD (int fd, int target)
+{
+  int result;
+#if !HAVE_FCNTL
+  result = dupfd (fd, target, 0);
+#elif FCNTL_DUPFD_BUGGY || REPLACE_FCHDIR
+  /* Detect invalid target; needed for cygwin 1.5.x.  */
+  if (target < 0 || getdtablesize () <= target)
+    {
+      result = -1;
+      errno = EINVAL;
+    }
+  else
+    {
+      /* Haiku alpha 2 loses fd flags on original.  */
+      int flags = fcntl (fd, F_GETFD);
+      if (flags < 0)
+        result = -1;
+      else
+        {
+          result = fcntl (fd, F_DUPFD, target);
+          if (0 <= result && fcntl (fd, F_SETFD, flags) == -1)
+            {
+              int saved_errno = errno;
+              close (result);
+              result = -1;
+              errno = saved_errno;
+            }
+# if REPLACE_FCHDIR
+          if (0 <= result)
+            result = _gl_register_dup (fd, result);
+# endif
+        }
+    }
+#else
+  result = fcntl (fd, F_DUPFD, target);
+#endif
+  return result;
+}
+
+static int
+rpl_fcntl_DUPFD_CLOEXEC (int fd, int target)
+{
+  int result;
+#if !HAVE_FCNTL
+  result = dupfd (fd, target, O_CLOEXEC);
+#else /* HAVE_FCNTL */
+# if defined __NetBSD__ || defined __HAIKU__
+  /* On NetBSD 9.0, the system fcntl (fd, F_DUPFD_CLOEXEC, target)
+     has only the same effect as fcntl (fd, F_DUPFD, target).  */
+  /* On Haiku, the system fcntl (fd, F_DUPFD_CLOEXEC, target) sets
+     the FD_CLOEXEC flag on fd, not on target.  Therefore avoid the
+     system fcntl in this case.  */
+#  define have_dupfd_cloexec -1
+# else
+  /* Try the system call first, if the headers claim it exists
+     (that is, if GNULIB_defined_F_DUPFD_CLOEXEC is 0), since we
+     may be running with a glibc that has the macro but with an
+     older kernel that does not support it.  Cache the
+     information on whether the system call really works, but
+     avoid caching failure if the corresponding F_DUPFD fails
+     for any reason.  0 = unknown, 1 = yes, -1 = no.  */
+  static int have_dupfd_cloexec = GNULIB_defined_F_DUPFD_CLOEXEC ? -1 : 0;
+  if (0 <= have_dupfd_cloexec)
+    {
+      result = fcntl (fd, F_DUPFD_CLOEXEC, target);
+      if (0 <= result || errno != EINVAL)
+        {
+          have_dupfd_cloexec = 1;
+#  if REPLACE_FCHDIR
+          if (0 <= result)
+            result = _gl_register_dup (fd, result);
+#  endif
+        }
+      else
+        {
+          result = rpl_fcntl_DUPFD (fd, target);
+          if (result >= 0)
+            have_dupfd_cloexec = -1;
+        }
+    }
+  else
+# endif
+    result = rpl_fcntl_DUPFD (fd, target);
+  if (0 <= result && have_dupfd_cloexec == -1)
+    {
+      int flags = fcntl (result, F_GETFD);
+      if (flags < 0 || fcntl (result, F_SETFD, flags | FD_CLOEXEC) == -1)
+        {
+          int saved_errno = errno;
+          close (result);
+          errno = saved_errno;
+          result = -1;
+        }
+    }
+#endif /* HAVE_FCNTL */
+  return result;
+}
+
+#undef fcntl
+
+#ifdef __KLIBC__
+
+static int
+klibc_fcntl (int fd, int action, /* arg */...)
+{
+  va_list arg_ptr;
+  int arg;
+  struct stat sbuf;
+  int result;
+
+  va_start (arg_ptr, action);
+  arg = va_arg (arg_ptr, int);
+  result = fcntl (fd, action, arg);
+  /* EPERM for F_DUPFD, ENOTSUP for others */
+  if (result == -1 && (errno == EPERM || errno == ENOTSUP)
+      && !fstat (fd, &sbuf) && S_ISDIR (sbuf.st_mode))
+    {
+      ULONG ulMode;
+
+      switch (action)
+        {
+        case F_DUPFD:
+          /* Find available fd */
+          while (fcntl (arg, F_GETFL) != -1 || errno != EBADF)
+            arg++;
+
+          result = dup2 (fd, arg);
+          break;
+
+        /* Using underlying APIs is right ? */
+        case F_GETFD:
+          if (DosQueryFHState (fd, &ulMode))
+            break;
+
+          result = (ulMode & OPEN_FLAGS_NOINHERIT) ? FD_CLOEXEC : 0;
+          break;
+
+        case F_SETFD:
+          if (arg & ~FD_CLOEXEC)
+            break;
+
+          if (DosQueryFHState (fd, &ulMode))
+            break;
+
+          if (arg & FD_CLOEXEC)
+            ulMode |= OPEN_FLAGS_NOINHERIT;
+          else
+            ulMode &= ~OPEN_FLAGS_NOINHERIT;
+
+          /* Filter supported flags.  */
+          ulMode &= (OPEN_FLAGS_WRITE_THROUGH | OPEN_FLAGS_FAIL_ON_ERROR
+                     | OPEN_FLAGS_NO_CACHE | OPEN_FLAGS_NOINHERIT);
+
+          if (DosSetFHState (fd, ulMode))
+            break;
+
+          result = 0;
+          break;
+
+        case F_GETFL:
+          result = 0;
+          break;
+
+        case F_SETFL:
+          if (arg != 0)
+            break;
+
+          result = 0;
+          break;
+
+        default:
+          errno = EINVAL;
+          break;
+        }
+    }
+
+  va_end (arg_ptr);
+
+  return result;
+}
+
+#endif
diff --git a/src/grep/lib/fcntl.in.h b/src/grep/lib/fcntl.in.h
new file mode 100644
index 0000000..26dedc3
--- /dev/null
+++ b/src/grep/lib/fcntl.in.h
@@ -0,0 +1,441 @@
+/* Like <fcntl.h>, but with non-working flags defined to 0.
+
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Paul Eggert */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined __need_system_fcntl_h
+/* Special invocation convention.  */
+
+/* Needed before <sys/stat.h>.
+   May also define off_t to a 64-bit type on native Windows.  */
+#include <sys/types.h>
+/* On some systems other than glibc, <sys/stat.h> is a prerequisite of
+   <fcntl.h>.  On glibc systems, we would like to avoid namespace pollution.
+   But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
+   extern "C" { ... } block, which leads to errors in C++ mode with the
+   overridden <sys/stat.h> from gnulib.  These errors are known to be gone
+   with g++ version >= 4.3.  */
+#if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
+# include <sys/stat.h>
+#endif
+#@INCLUDE_NEXT@ @NEXT_FCNTL_H@
+
+/* Native Windows platforms declare open(), creat() in <io.h>.  */
+#if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
+    && (defined _WIN32 && ! defined __CYGWIN__)
+# include <io.h>
+#endif
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_FCNTL_H
+
+/* Needed before <sys/stat.h>.
+   May also define off_t to a 64-bit type on native Windows.  */
+#include <sys/types.h>
+/* On some systems other than glibc, <sys/stat.h> is a prerequisite of
+   <fcntl.h>.  On glibc systems, we would like to avoid namespace pollution.
+   But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
+   extern "C" { ... } block, which leads to errors in C++ mode with the
+   overridden <sys/stat.h> from gnulib.  These errors are known to be gone
+   with g++ version >= 4.3.  */
+#if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
+# include <sys/stat.h>
+#endif
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_FCNTL_H@
+
+/* Native Windows platforms declare open(), creat() in <io.h>.  */
+#if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
+    && (defined _WIN32 && ! defined __CYGWIN__)
+# include <io.h>
+#endif
+
+#ifndef _@GUARD_PREFIX@_FCNTL_H
+#define _@GUARD_PREFIX@_FCNTL_H
+
+#ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems.  */
+# include <unistd.h>
+#endif
+
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
+/* Declare overridden functions.  */
+
+#if @GNULIB_CREAT@
+# if @REPLACE_CREAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef creat
+#   define creat rpl_creat
+#  endif
+_GL_FUNCDECL_RPL (creat, int, (const char *filename, mode_t mode)
+                             _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (creat, int, (const char *filename, mode_t mode));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef creat
+#   define creat _creat
+#  endif
+_GL_CXXALIAS_MDA (creat, int, (const char *filename, mode_t mode));
+# else
+_GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode));
+# endif
+_GL_CXXALIASWARN (creat);
+#elif defined GNULIB_POSIXCHECK
+# undef creat
+/* Assume creat is always declared.  */
+_GL_WARN_ON_USE (creat, "creat is not always POSIX compliant - "
+                 "use gnulib module creat for portability");
+#elif @GNULIB_MDA_CREAT@
+/* On native Windows, map 'creat' to '_creat', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::creat always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef creat
+#   define creat _creat
+#  endif
+/* Need to cast, because in mingw the last argument is 'int mode'.  */
+_GL_CXXALIAS_MDA_CAST (creat, int, (const char *filename, mode_t mode));
+# else
+_GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode));
+# endif
+_GL_CXXALIASWARN (creat);
+#endif
+
+#if @GNULIB_FCNTL@
+# if @REPLACE_FCNTL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fcntl
+#   define fcntl rpl_fcntl
+#  endif
+_GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...));
+_GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...));
+#  if !GNULIB_defined_rpl_fcntl
+#   define GNULIB_defined_rpl_fcntl 1
+#  endif
+# else
+#  if !@HAVE_FCNTL@
+_GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...));
+#   if !GNULIB_defined_fcntl
+#    define GNULIB_defined_fcntl 1
+#   endif
+#  endif
+_GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...));
+# endif
+_GL_CXXALIASWARN (fcntl);
+#elif defined GNULIB_POSIXCHECK
+# undef fcntl
+# if HAVE_RAW_DECL_FCNTL
+_GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - "
+                 "use gnulib module fcntl for portability");
+# endif
+#endif
+
+#if @GNULIB_OPEN@
+# if @REPLACE_OPEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef open
+#   define open rpl_open
+#  endif
+_GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
+                             _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef open
+#   define open _open
+#  endif
+_GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
+# else
+_GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
+# endif
+/* On HP-UX 11, in C++ mode, open() is defined as an inline function with a
+   default argument.  _GL_CXXALIASWARN does not work in this case.  */
+# if !defined __hpux
+_GL_CXXALIASWARN (open);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef open
+/* Assume open is always declared.  */
+_GL_WARN_ON_USE (open, "open is not always POSIX compliant - "
+                 "use gnulib module open for portability");
+#elif @GNULIB_MDA_OPEN@
+/* On native Windows, map 'open' to '_open', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::open always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef open
+#   define open _open
+#  endif
+_GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
+# else
+_GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
+# endif
+# if !defined __hpux
+_GL_CXXALIASWARN (open);
+# endif
+#endif
+
+#if @GNULIB_OPENAT@
+# if @REPLACE_OPENAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef openat
+#   define openat rpl_openat
+#  endif
+_GL_FUNCDECL_RPL (openat, int,
+                  (int fd, char const *file, int flags, /* mode_t mode */ ...)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (openat, int,
+                  (int fd, char const *file, int flags, /* mode_t mode */ ...));
+# else
+#  if !@HAVE_OPENAT@
+_GL_FUNCDECL_SYS (openat, int,
+                  (int fd, char const *file, int flags, /* mode_t mode */ ...)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (openat, int,
+                  (int fd, char const *file, int flags, /* mode_t mode */ ...));
+# endif
+_GL_CXXALIASWARN (openat);
+#elif defined GNULIB_POSIXCHECK
+# undef openat
+# if HAVE_RAW_DECL_OPENAT
+_GL_WARN_ON_USE (openat, "openat is not portable - "
+                 "use gnulib module openat for portability");
+# endif
+#endif
+
+
+/* Fix up the FD_* macros, only known to be missing on mingw.  */
+
+#ifndef FD_CLOEXEC
+# define FD_CLOEXEC 1
+#endif
+
+/* Fix up the supported F_* macros.  Intentionally leave other F_*
+   macros undefined.  Only known to be missing on mingw.  */
+
+#ifndef F_DUPFD_CLOEXEC
+# define F_DUPFD_CLOEXEC 0x40000000
+/* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise.  */
+# define GNULIB_defined_F_DUPFD_CLOEXEC 1
+#else
+# define GNULIB_defined_F_DUPFD_CLOEXEC 0
+#endif
+
+#ifndef F_DUPFD
+# define F_DUPFD 1
+#endif
+
+#ifndef F_GETFD
+# define F_GETFD 2
+#endif
+
+/* Fix up the O_* macros.  */
+
+/* AIX 7.1 with XL C 12.1 defines O_CLOEXEC, O_NOFOLLOW, and O_TTY_INIT
+   to values outside 'int' range, so omit these misdefinitions.
+   But avoid namespace pollution on non-AIX systems.  */
+#ifdef _AIX
+# include <limits.h>
+# if defined O_CLOEXEC && ! (INT_MIN <= O_CLOEXEC && O_CLOEXEC <= INT_MAX)
+#  undef O_CLOEXEC
+# endif
+# if defined O_NOFOLLOW && ! (INT_MIN <= O_NOFOLLOW && O_NOFOLLOW <= INT_MAX)
+#  undef O_NOFOLLOW
+# endif
+# if defined O_TTY_INIT && ! (INT_MIN <= O_TTY_INIT && O_TTY_INIT <= INT_MAX)
+#  undef O_TTY_INIT
+# endif
+#endif
+
+#if !defined O_DIRECT && defined O_DIRECTIO
+/* Tru64 spells it 'O_DIRECTIO'.  */
+# define O_DIRECT O_DIRECTIO
+#endif
+
+#if !defined O_CLOEXEC && defined O_NOINHERIT
+/* Mingw spells it 'O_NOINHERIT'.  */
+# define O_CLOEXEC O_NOINHERIT
+#endif
+
+#ifndef O_CLOEXEC
+# define O_CLOEXEC 0x40000000 /* Try to not collide with system O_* flags.  */
+# define GNULIB_defined_O_CLOEXEC 1
+#else
+# define GNULIB_defined_O_CLOEXEC 0
+#endif
+
+#ifndef O_DIRECT
+# define O_DIRECT 0
+#endif
+
+#ifndef O_DIRECTORY
+# define O_DIRECTORY 0
+#endif
+
+#ifndef O_DSYNC
+# define O_DSYNC 0
+#endif
+
+#ifndef O_EXEC
+# define O_EXEC O_RDONLY /* This is often close enough in older systems.  */
+#endif
+
+#ifndef O_IGNORE_CTTY
+# define O_IGNORE_CTTY 0
+#endif
+
+#ifndef O_NDELAY
+# define O_NDELAY 0
+#endif
+
+#ifndef O_NOATIME
+# define O_NOATIME 0
+#endif
+
+#ifndef O_NONBLOCK
+# define O_NONBLOCK O_NDELAY
+#endif
+
+/* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero
+   value of O_NONBLOCK.  Otherwise, O_NONBLOCK is defined (above) to O_NDELAY
+   or to 0 as fallback.  */
+#if @GNULIB_NONBLOCKING@
+# if O_NONBLOCK
+#  define GNULIB_defined_O_NONBLOCK 0
+# else
+#  define GNULIB_defined_O_NONBLOCK 1
+#  undef O_NONBLOCK
+#  define O_NONBLOCK 0x40000000
+# endif
+#endif
+
+#ifndef O_NOCTTY
+# define O_NOCTTY 0
+#endif
+
+#ifndef O_NOFOLLOW
+# define O_NOFOLLOW 0
+#endif
+
+#ifndef O_NOLINK
+# define O_NOLINK 0
+#endif
+
+#ifndef O_NOLINKS
+# define O_NOLINKS 0
+#endif
+
+#ifndef O_NOTRANS
+# define O_NOTRANS 0
+#endif
+
+#ifndef O_RSYNC
+# define O_RSYNC 0
+#endif
+
+#ifndef O_SEARCH
+# define O_SEARCH O_RDONLY /* This is often close enough in older systems.  */
+#endif
+
+#ifndef O_SYNC
+# define O_SYNC 0
+#endif
+
+#ifndef O_TTY_INIT
+# define O_TTY_INIT 0
+#endif
+
+#if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
+# undef O_ACCMODE
+# define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
+#endif
+
+/* For systems that distinguish between text and binary I/O.
+   O_BINARY is usually declared in fcntl.h  */
+#if !defined O_BINARY && defined _O_BINARY
+  /* For MSC-compatible compilers.  */
+# define O_BINARY _O_BINARY
+# define O_TEXT _O_TEXT
+#endif
+
+#if defined __BEOS__ || defined __HAIKU__
+  /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect.  */
+# undef O_BINARY
+# undef O_TEXT
+#endif
+
+#ifndef O_BINARY
+# define O_BINARY 0
+# define O_TEXT 0
+#endif
+
+/* Fix up the AT_* macros.  */
+
+/* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive.  Its
+   value exceeds INT_MAX, so its use as an int doesn't conform to the
+   C standard, and GCC and Sun C complain in some cases.  If the bug
+   is present, undef AT_FDCWD here, so it can be redefined below.  */
+#if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
+# undef AT_FDCWD
+#endif
+
+/* Use the same bit pattern as Solaris 9, but with the proper
+   signedness.  The bit pattern is important, in case this actually is
+   Solaris with the above workaround.  */
+#ifndef AT_FDCWD
+# define AT_FDCWD (-3041965)
+#endif
+
+/* Use the same values as Solaris 9.  This shouldn't matter, but
+   there's no real reason to differ.  */
+#ifndef AT_SYMLINK_NOFOLLOW
+# define AT_SYMLINK_NOFOLLOW 4096
+#endif
+
+#ifndef AT_REMOVEDIR
+# define AT_REMOVEDIR 1
+#endif
+
+/* Solaris 9 lacks these two, so just pick unique values.  */
+#ifndef AT_SYMLINK_FOLLOW
+# define AT_SYMLINK_FOLLOW 2
+#endif
+
+#ifndef AT_EACCESS
+# define AT_EACCESS 4
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_FCNTL_H */
+#endif /* _@GUARD_PREFIX@_FCNTL_H */
+#endif
diff --git a/src/grep/lib/fd-hook.c b/src/grep/lib/fd-hook.c
new file mode 100644
index 0000000..75b1626
--- /dev/null
+++ b/src/grep/lib/fd-hook.c
@@ -0,0 +1,116 @@
+/* Hook for making file descriptor functions close(), ioctl() extensible.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2009.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "fd-hook.h"
+
+#include <stdlib.h>
+
+/* Currently, this entire code is only needed for the handling of sockets
+   on native Windows platforms.  */
+#if WINDOWS_SOCKETS
+
+/* The first and last link in the doubly linked list.
+   Initially the list is empty.  */
+static struct fd_hook anchor = { &anchor, &anchor, NULL, NULL };
+
+int
+execute_close_hooks (const struct fd_hook *remaining_list, gl_close_fn primary,
+                     int fd)
+{
+  if (remaining_list == &anchor)
+    /* End of list reached.  */
+    return primary (fd);
+  else
+    return remaining_list->private_close_fn (remaining_list->private_next,
+                                             primary, fd);
+}
+
+int
+execute_all_close_hooks (gl_close_fn primary, int fd)
+{
+  return execute_close_hooks (anchor.private_next, primary, fd);
+}
+
+int
+execute_ioctl_hooks (const struct fd_hook *remaining_list, gl_ioctl_fn primary,
+                     int fd, int request, void *arg)
+{
+  if (remaining_list == &anchor)
+    /* End of list reached.  */
+    return primary (fd, request, arg);
+  else
+    return remaining_list->private_ioctl_fn (remaining_list->private_next,
+                                             primary, fd, request, arg);
+}
+
+int
+execute_all_ioctl_hooks (gl_ioctl_fn primary,
+                         int fd, int request, void *arg)
+{
+  return execute_ioctl_hooks (anchor.private_next, primary, fd, request, arg);
+}
+
+void
+register_fd_hook (close_hook_fn close_hook, ioctl_hook_fn ioctl_hook, struct fd_hook *link)
+{
+  if (close_hook == NULL)
+    close_hook = execute_close_hooks;
+  if (ioctl_hook == NULL)
+    ioctl_hook = execute_ioctl_hooks;
+
+  if (link->private_next == NULL && link->private_prev == NULL)
+    {
+      /* Add the link to the doubly linked list.  */
+      link->private_next = anchor.private_next;
+      link->private_prev = &anchor;
+      link->private_close_fn = close_hook;
+      link->private_ioctl_fn = ioctl_hook;
+      anchor.private_next->private_prev = link;
+      anchor.private_next = link;
+    }
+  else
+    {
+      /* The link is already in use.  */
+      if (link->private_close_fn != close_hook
+          || link->private_ioctl_fn != ioctl_hook)
+        abort ();
+    }
+}
+
+void
+unregister_fd_hook (struct fd_hook *link)
+{
+  struct fd_hook *next = link->private_next;
+  struct fd_hook *prev = link->private_prev;
+
+  if (next != NULL && prev != NULL)
+    {
+      /* The link is in use.  Remove it from the doubly linked list.  */
+      prev->private_next = next;
+      next->private_prev = prev;
+      /* Clear the link, to mark it unused.  */
+      link->private_next = NULL;
+      link->private_prev = NULL;
+      link->private_close_fn = NULL;
+      link->private_ioctl_fn = NULL;
+    }
+}
+
+#endif
diff --git a/src/grep/lib/fd-hook.h b/src/grep/lib/fd-hook.h
new file mode 100644
index 0000000..98e2a52
--- /dev/null
+++ b/src/grep/lib/fd-hook.h
@@ -0,0 +1,119 @@
+/* Hook for making file descriptor functions close(), ioctl() extensible.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+
+#ifndef FD_HOOK_H
+#define FD_HOOK_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Currently, this entire code is only needed for the handling of sockets
+   on native Windows platforms.  */
+#if WINDOWS_SOCKETS
+
+
+/* Type of function that closes FD.  */
+typedef int (*gl_close_fn) (int fd);
+
+/* Type of function that applies a control request to FD.  */
+typedef int (*gl_ioctl_fn) (int fd, int request, void *arg);
+
+/* An element of the list of file descriptor hooks.
+   In CLOS (Common Lisp Object System) speak, it consists of an "around"
+   method for the close() function and an "around" method for the ioctl()
+   function.
+   The fields of this structure are considered private.  */
+struct fd_hook
+{
+  /* Doubly linked list.  */
+  struct fd_hook *private_next;
+  struct fd_hook *private_prev;
+  /* Function that treats the types of FD that it knows about and calls
+     execute_close_hooks (REMAINING_LIST, PRIMARY, FD) as a fallback.  */
+  int (*private_close_fn) (const struct fd_hook *remaining_list,
+                           gl_close_fn primary,
+                           int fd);
+  /* Function that treats the types of FD that it knows about and calls
+     execute_ioctl_hooks (REMAINING_LIST, PRIMARY, FD, REQUEST, ARG) as a
+     fallback.  */
+  int (*private_ioctl_fn) (const struct fd_hook *remaining_list,
+                           gl_ioctl_fn primary,
+                           int fd, int request, void *arg);
+};
+
+/* This type of function closes FD, applying special knowledge for the FD
+   types it knows about, and calls
+   execute_close_hooks (REMAINING_LIST, PRIMARY, FD)
+   for the other FD types.
+   In CLOS speak, REMAINING_LIST is the remaining list of "around" methods,
+   and PRIMARY is the "primary" method for close().  */
+typedef int (*close_hook_fn) (const struct fd_hook *remaining_list,
+                              gl_close_fn primary,
+                              int fd);
+
+/* Execute the close hooks in REMAINING_LIST, with PRIMARY as "primary" method.
+   Return 0 or -1, like close() would do.  */
+extern int execute_close_hooks (const struct fd_hook *remaining_list,
+                                gl_close_fn primary,
+                                int fd);
+
+/* Execute all close hooks, with PRIMARY as "primary" method.
+   Return 0 or -1, like close() would do.  */
+extern int execute_all_close_hooks (gl_close_fn primary, int fd);
+
+/* This type of function applies a control request to FD, applying special
+   knowledge for the FD types it knows about, and calls
+   execute_ioctl_hooks (REMAINING_LIST, PRIMARY, FD, REQUEST, ARG)
+   for the other FD types.
+   In CLOS speak, REMAINING_LIST is the remaining list of "around" methods,
+   and PRIMARY is the "primary" method for ioctl().  */
+typedef int (*ioctl_hook_fn) (const struct fd_hook *remaining_list,
+                              gl_ioctl_fn primary,
+                              int fd, int request, void *arg);
+
+/* Execute the ioctl hooks in REMAINING_LIST, with PRIMARY as "primary" method.
+   Return 0 or -1, like ioctl() would do.  */
+extern int execute_ioctl_hooks (const struct fd_hook *remaining_list,
+                                gl_ioctl_fn primary,
+                                int fd, int request, void *arg);
+
+/* Execute all ioctl hooks, with PRIMARY as "primary" method.
+   Return 0 or -1, like ioctl() would do.  */
+extern int execute_all_ioctl_hooks (gl_ioctl_fn primary,
+                                    int fd, int request, void *arg);
+
+/* Add a function pair to the list of file descriptor hooks.
+   CLOSE_HOOK and IOCTL_HOOK may be NULL, indicating no change.
+   The LINK variable points to a piece of memory which is guaranteed to be
+   accessible until the corresponding call to unregister_fd_hook.  */
+extern void register_fd_hook (close_hook_fn close_hook, ioctl_hook_fn ioctl_hook,
+                              struct fd_hook *link);
+
+/* Removes a hook from the list of file descriptor hooks.  */
+extern void unregister_fd_hook (struct fd_hook *link);
+
+
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* FD_HOOK_H */
diff --git a/src/grep/lib/fd-safer-flag.c b/src/grep/lib/fd-safer-flag.c
new file mode 100644
index 0000000..bfaef4d
--- /dev/null
+++ b/src/grep/lib/fd-safer-flag.c
@@ -0,0 +1,52 @@
+/* Adjust a file descriptor result so that it avoids clobbering
+   STD{IN,OUT,ERR}_FILENO, with specific flags.
+
+   Copyright (C) 2005-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert and Eric Blake.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "unistd-safer.h"
+
+#include <errno.h>
+#include <unistd.h>
+
+/* Return FD, unless FD would be a copy of standard input, output, or
+   error; in that case, return a duplicate of FD, closing FD.  If FLAG
+   contains O_CLOEXEC, the returned FD will have close-on-exec
+   semantics.  On failure to duplicate, close FD, set errno, and
+   return -1.  Preserve errno if FD is negative, so that the caller
+   can always inspect errno when the returned value is negative.
+
+   This function is usefully wrapped around functions that return file
+   descriptors, e.g., fd_safer_flag (open ("file", O_RDONLY | flag), flag).  */
+
+int
+fd_safer_flag (int fd, int flag)
+{
+  if (STDIN_FILENO <= fd && fd <= STDERR_FILENO)
+    {
+      int f = dup_safer_flag (fd, flag);
+      int e = errno;
+      close (fd);
+      errno = e;
+      fd = f;
+    }
+
+  return fd;
+}
diff --git a/src/grep/lib/fd-safer.c b/src/grep/lib/fd-safer.c
new file mode 100644
index 0000000..487b039
--- /dev/null
+++ b/src/grep/lib/fd-safer.c
@@ -0,0 +1,49 @@
+/* Return a safer copy of a file descriptor.
+
+   Copyright (C) 2005-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <config.h>
+
+#include "unistd-safer.h"
+
+#include <errno.h>
+#include <unistd.h>
+
+/* Return FD, unless FD would be a copy of standard input, output, or
+   error; in that case, return a duplicate of FD, closing FD.  On
+   failure to duplicate, close FD, set errno, and return -1.  Preserve
+   errno if FD is negative, so that the caller can always inspect
+   errno when the returned value is negative.
+
+   This function is usefully wrapped around functions that return file
+   descriptors, e.g., fd_safer (open ("file", O_RDONLY)).  */
+
+int
+fd_safer (int fd)
+{
+  if (STDIN_FILENO <= fd && fd <= STDERR_FILENO)
+    {
+      int f = dup_safer (fd);
+      int e = errno;
+      close (fd);
+      errno = e;
+      fd = f;
+    }
+
+  return fd;
+}
diff --git a/src/grep/lib/fdopendir.c b/src/grep/lib/fdopendir.c
new file mode 100644
index 0000000..451b4e1
--- /dev/null
+++ b/src/grep/lib/fdopendir.c
@@ -0,0 +1,249 @@
+/* provide a replacement fdopendir function
+   Copyright (C) 2004-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#include <config.h>
+
+#include <dirent.h>
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#if !HAVE_FDOPENDIR
+
+# include "openat.h"
+# include "openat-priv.h"
+# include "save-cwd.h"
+
+# if GNULIB_DIRENT_SAFER
+#  include "dirent--.h"
+# endif
+
+# ifndef REPLACE_FCHDIR
+#  define REPLACE_FCHDIR 0
+# endif
+
+static DIR *fdopendir_with_dup (int, int, struct saved_cwd const *);
+static DIR *fd_clone_opendir (int, struct saved_cwd const *);
+
+/* Replacement for POSIX fdopendir.
+
+   First, try to simulate it via opendir ("/proc/self/fd/...").  Failing
+   that, simulate it by using fchdir metadata, or by doing
+   save_cwd/fchdir/opendir(".")/restore_cwd.
+   If either the save_cwd or the restore_cwd fails (relatively unlikely),
+   then give a diagnostic and exit nonzero.
+
+   If successful, the resulting stream is based on FD in
+   implementations where streams are based on file descriptors and in
+   applications where no other thread or signal handler allocates or
+   frees file descriptors.  In other cases, consult dirfd on the result
+   to find out whether FD is still being used.
+
+   Otherwise, this function works just like POSIX fdopendir.
+
+   W A R N I N G:
+
+   Unlike other fd-related functions, this one places constraints on FD.
+   If this function returns successfully, FD is under control of the
+   dirent.h system, and the caller should not close or modify the state of
+   FD other than by the dirent.h functions.  */
+# ifdef __KLIBC__
+#  include <InnoTekLIBC/backend.h>
+
+DIR *
+fdopendir (int fd)
+{
+  char path[_MAX_PATH];
+  DIR *dirp;
+
+  /* Get a path from fd */
+  if (__libc_Back_ioFHToPath (fd, path, sizeof (path)))
+    return NULL;
+
+  dirp = opendir (path);
+  if (!dirp)
+    return NULL;
+
+  /* Unregister fd registered by opendir() */
+  _gl_unregister_dirp_fd (dirfd (dirp));
+
+  /* Register our fd */
+  if (_gl_register_dirp_fd (fd, dirp))
+    {
+      int saved_errno = errno;
+
+      closedir (dirp);
+
+      errno = saved_errno;
+
+      dirp = NULL;
+    }
+
+  return dirp;
+}
+# else
+DIR *
+fdopendir (int fd)
+{
+  DIR *dir = fdopendir_with_dup (fd, -1, NULL);
+
+  if (! REPLACE_FCHDIR && ! dir)
+    {
+      int saved_errno = errno;
+      if (EXPECTED_ERRNO (saved_errno))
+        {
+          struct saved_cwd cwd;
+          if (save_cwd (&cwd) != 0)
+            openat_save_fail (errno);
+          dir = fdopendir_with_dup (fd, -1, &cwd);
+          saved_errno = errno;
+          free_cwd (&cwd);
+          errno = saved_errno;
+        }
+    }
+
+  return dir;
+}
+# endif
+
+/* Like fdopendir, except that if OLDER_DUPFD is not -1, it is known
+   to be a dup of FD which is less than FD - 1 and which will be
+   closed by the caller and not otherwise used by the caller.  This
+   function makes sure that FD is closed and all file descriptors less
+   than FD are open, and then calls fd_clone_opendir on a dup of FD.
+   That way, barring race conditions, fd_clone_opendir returns a
+   stream whose file descriptor is FD.
+
+   If REPLACE_FCHDIR or CWD is null, use opendir ("/proc/self/fd/...",
+   falling back on fchdir metadata.  Otherwise, CWD is a saved version
+   of the working directory; use fchdir/opendir(".")/restore_cwd(CWD).  */
+static DIR *
+fdopendir_with_dup (int fd, int older_dupfd, struct saved_cwd const *cwd)
+{
+  int dupfd = dup (fd);
+  if (dupfd < 0 && errno == EMFILE)
+    dupfd = older_dupfd;
+  if (dupfd < 0)
+    return NULL;
+  else
+    {
+      DIR *dir;
+      int saved_errno;
+      if (dupfd < fd - 1 && dupfd != older_dupfd)
+        {
+          dir = fdopendir_with_dup (fd, dupfd, cwd);
+          saved_errno = errno;
+        }
+      else
+        {
+          close (fd);
+          dir = fd_clone_opendir (dupfd, cwd);
+          saved_errno = errno;
+          if (! dir)
+            {
+              int fd1 = dup (dupfd);
+              if (fd1 != fd)
+                openat_save_fail (fd1 < 0 ? errno : EBADF);
+            }
+        }
+
+      if (dupfd != older_dupfd)
+        close (dupfd);
+      errno = saved_errno;
+      return dir;
+    }
+}
+
+/* Like fdopendir, except the result controls a clone of FD.  It is
+   the caller's responsibility both to close FD and (if the result is
+   not null) to closedir the result.  */
+static DIR *
+fd_clone_opendir (int fd, struct saved_cwd const *cwd)
+{
+  if (REPLACE_FCHDIR || ! cwd)
+    {
+      DIR *dir = NULL;
+      int saved_errno = EOPNOTSUPP;
+      char buf[OPENAT_BUFFER_SIZE];
+      char *proc_file = openat_proc_name (buf, fd, ".");
+      if (proc_file)
+        {
+          dir = opendir (proc_file);
+          saved_errno = errno;
+          if (proc_file != buf)
+            free (proc_file);
+        }
+# if REPLACE_FCHDIR
+      if (! dir && EXPECTED_ERRNO (saved_errno))
+        {
+          char const *name = _gl_directory_name (fd);
+          DIR *dp = name ? opendir (name) : NULL;
+
+          /* The caller has done an elaborate dance to arrange for opendir to
+             consume just the right file descriptor.  If dirfd returns -1,
+             though, we're on a system like mingw where opendir does not
+             consume a file descriptor.  Consume it via 'dup' instead.  */
+          if (dp && dirfd (dp) < 0)
+            dup (fd);
+
+          return dp;
+        }
+# endif
+      errno = saved_errno;
+      return dir;
+    }
+  else
+    {
+      if (fchdir (fd) != 0)
+        return NULL;
+      else
+        {
+          DIR *dir = opendir (".");
+          int saved_errno = errno;
+          if (restore_cwd (cwd) != 0)
+            openat_restore_fail (errno);
+          errno = saved_errno;
+          return dir;
+        }
+    }
+}
+
+#else /* HAVE_FDOPENDIR */
+
+# include <errno.h>
+# include <sys/stat.h>
+
+# undef fdopendir
+
+/* Like fdopendir, but work around GNU/Hurd bug by validating FD.  */
+
+DIR *
+rpl_fdopendir (int fd)
+{
+  struct stat st;
+  if (fstat (fd, &st))
+    return NULL;
+  if (!S_ISDIR (st.st_mode))
+    {
+      errno = ENOTDIR;
+      return NULL;
+    }
+  return fdopendir (fd);
+}
+
+#endif /* HAVE_FDOPENDIR */
diff --git a/src/grep/lib/filename.h b/src/grep/lib/filename.h
new file mode 100644
index 0000000..dafe3df
--- /dev/null
+++ b/src/grep/lib/filename.h
@@ -0,0 +1,112 @@
+/* Basic filename support macros.
+   Copyright (C) 2001-2004, 2007-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* From Paul Eggert and Jim Meyering.  */
+
+#ifndef _FILENAME_H
+#define _FILENAME_H
+
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Filename support.
+   ISSLASH(C)                  tests whether C is a directory separator
+                               character.
+   HAS_DEVICE(Filename)        tests whether Filename contains a device
+                               specification.
+   FILE_SYSTEM_PREFIX_LEN(Filename)  length of the device specification
+                                     at the beginning of Filename,
+                                     index of the part consisting of
+                                     alternating components and slashes.
+   FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
+                               1 when a non-empty device specification
+                               can be followed by an empty or relative
+                               part,
+                               0 when a non-empty device specification
+                               must be followed by a slash,
+                               0 when device specification don't exist.
+   IS_ABSOLUTE_FILE_NAME(Filename)
+                               tests whether Filename is independent of
+                               any notion of "current directory".
+   IS_RELATIVE_FILE_NAME(Filename)
+                               tests whether Filename may be concatenated
+                               to a directory filename.
+   Note: On native Windows, OS/2, DOS, "c:" is neither an absolute nor a
+   relative file name!
+   IS_FILE_NAME_WITH_DIR(Filename)  tests whether Filename contains a device
+                                    or directory specification.
+ */
+#if defined _WIN32 || defined __CYGWIN__ \
+    || defined __EMX__ || defined __MSDOS__ || defined __DJGPP__
+  /* Native Windows, Cygwin, OS/2, DOS */
+# define ISSLASH(C) ((C) == '/' || (C) == '\\')
+  /* Internal macro: Tests whether a character is a drive letter.  */
+# define _IS_DRIVE_LETTER(C) \
+    (((C) >= 'A' && (C) <= 'Z') || ((C) >= 'a' && (C) <= 'z'))
+  /* Help the compiler optimizing it.  This assumes ASCII.  */
+# undef _IS_DRIVE_LETTER
+# define _IS_DRIVE_LETTER(C) \
+    (((unsigned int) (C) | ('a' - 'A')) - 'a' <= 'z' - 'a')
+# define HAS_DEVICE(Filename) \
+    (_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':')
+# define FILE_SYSTEM_PREFIX_LEN(Filename) (HAS_DEVICE (Filename) ? 2 : 0)
+# ifdef __CYGWIN__
+#  define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
+# else
+   /* On native Windows, OS/2, DOS, the system has the notion of a
+      "current directory" on each drive.  */
+#  define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 1
+# endif
+# if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
+#  define IS_ABSOLUTE_FILE_NAME(Filename) \
+     ISSLASH ((Filename)[FILE_SYSTEM_PREFIX_LEN (Filename)])
+# else
+#  define IS_ABSOLUTE_FILE_NAME(Filename) \
+     (ISSLASH ((Filename)[0]) || HAS_DEVICE (Filename))
+# endif
+# define IS_RELATIVE_FILE_NAME(Filename) \
+    (! (ISSLASH ((Filename)[0]) || HAS_DEVICE (Filename)))
+# define IS_FILE_NAME_WITH_DIR(Filename) \
+    (strchr ((Filename), '/') != NULL || strchr ((Filename), '\\') != NULL \
+     || HAS_DEVICE (Filename))
+#else
+  /* Unix */
+# define ISSLASH(C) ((C) == '/')
+# define HAS_DEVICE(Filename) ((void) (Filename), 0)
+# define FILE_SYSTEM_PREFIX_LEN(Filename) ((void) (Filename), 0)
+# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
+# define IS_ABSOLUTE_FILE_NAME(Filename) ISSLASH ((Filename)[0])
+# define IS_RELATIVE_FILE_NAME(Filename) (! ISSLASH ((Filename)[0]))
+# define IS_FILE_NAME_WITH_DIR(Filename) (strchr ((Filename), '/') != NULL)
+#endif
+
+/* Deprecated macros.  For backward compatibility with old users of the
+   'filename' module.  */
+#define IS_ABSOLUTE_PATH IS_ABSOLUTE_FILE_NAME
+#define IS_PATH_WITH_DIR IS_FILE_NAME_WITH_DIR
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _FILENAME_H */
diff --git a/src/grep/lib/filenamecat-lgpl.c b/src/grep/lib/filenamecat-lgpl.c
new file mode 100644
index 0000000..d52dc80
--- /dev/null
+++ b/src/grep/lib/filenamecat-lgpl.c
@@ -0,0 +1,90 @@
+/* Concatenate two arbitrary file names.
+
+   Copyright (C) 1996-2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "filenamecat.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "basename-lgpl.h"
+#include "filename.h"
+
+#if ! HAVE_MEMPCPY && ! defined mempcpy
+# define mempcpy(D, S, N) ((void *) ((char *) memcpy (D, S, N) + (N)))
+#endif
+
+/* Concatenate two file name components, DIR and BASE, in
+   newly-allocated storage and return the result.
+   The resulting file name F is such that the commands "ls F" and "(cd
+   DIR; ls ./BASE)" refer to the same file.  If necessary, put
+   a separator between DIR and BASE in the result.  Typically this
+   separator is "/", but in rare cases it might be ".".
+   In any case, if BASE_IN_RESULT is non-NULL, set
+   *BASE_IN_RESULT to point to the copy of BASE at the end of the
+   returned concatenation.
+
+   If malloc fails, return NULL with errno set.  */
+
+char *
+mfile_name_concat (char const *dir, char const *base, char **base_in_result)
+{
+  char const *dirbase = last_component (dir);
+  size_t dirbaselen = base_len (dirbase);
+  size_t dirlen = dirbase - dir + dirbaselen;
+  size_t baselen = strlen (base);
+  char sep = '\0';
+  if (dirbaselen)
+    {
+      /* DIR is not a file system root, so separate with / if needed.  */
+      if (! ISSLASH (dir[dirlen - 1]) && ! ISSLASH (*base))
+        sep = '/';
+    }
+  else if (ISSLASH (*base))
+    {
+      /* DIR is a file system root and BASE begins with a slash, so
+         separate with ".".  For example, if DIR is "/" and BASE is
+         "/foo" then return "/./foo", as "//foo" would be wrong on
+         some POSIX systems.  A fancier algorithm could omit "." in
+         some cases but is not worth the trouble.  */
+      sep = '.';
+    }
+
+  char *p_concat = malloc (dirlen + (sep != '\0')  + baselen + 1);
+  if (p_concat == NULL)
+    return NULL;
+
+  {
+    char *p;
+
+    p = mempcpy (p_concat, dir, dirlen);
+    *p = sep;
+    p += sep != '\0';
+
+    if (base_in_result)
+      *base_in_result = p;
+
+    p = mempcpy (p, base, baselen);
+    *p = '\0';
+  }
+
+  return p_concat;
+}
diff --git a/src/grep/lib/filenamecat.h b/src/grep/lib/filenamecat.h
new file mode 100644
index 0000000..e5acb15
--- /dev/null
+++ b/src/grep/lib/filenamecat.h
@@ -0,0 +1,32 @@
+/* Concatenate two arbitrary file names.
+
+   Copyright (C) 1996-1997, 2003, 2005, 2007, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <stdlib.h>
+
+#if GNULIB_FILENAMECAT
+char *file_name_concat (char const *dir, char const *base,
+                        char **base_in_result)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+#endif
+
+char *mfile_name_concat (char const *dir, char const *base,
+                         char **base_in_result)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
diff --git a/src/grep/lib/flexmember.h b/src/grep/lib/flexmember.h
new file mode 100644
index 0000000..1b19a2b
--- /dev/null
+++ b/src/grep/lib/flexmember.h
@@ -0,0 +1,60 @@
+/* Sizes of structs with flexible array members.
+
+   Copyright 2016-2021 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.
+
+   Written by Paul Eggert.  */
+
+#include <stddef.h>
+
+/* Nonzero multiple of alignment of TYPE, suitable for FLEXSIZEOF below.
+   On older platforms without _Alignof, use a pessimistic bound that is
+   safe in practice even if FLEXIBLE_ARRAY_MEMBER is 1.
+   On newer platforms, use _Alignof to get a tighter bound.  */
+
+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112
+# define FLEXALIGNOF(type) (sizeof (type) & ~ (sizeof (type) - 1))
+#else
+# define FLEXALIGNOF(type) _Alignof (type)
+#endif
+
+/* Yield a properly aligned upper bound on the size of a struct of
+   type TYPE with a flexible array member named MEMBER that is
+   followed by N bytes of other data.  The result is suitable as an
+   argument to malloc.  For example:
+
+     struct s { int n; char d[FLEXIBLE_ARRAY_MEMBER]; };
+     struct s *p = malloc (FLEXSIZEOF (struct s, d, n * sizeof (char)));
+
+   FLEXSIZEOF (TYPE, MEMBER, N) is not simply (sizeof (TYPE) + N),
+   since FLEXIBLE_ARRAY_MEMBER may be 1 on pre-C11 platforms.  Nor is
+   it simply (offsetof (TYPE, MEMBER) + N), as that might yield a size
+   that causes malloc to yield a pointer that is not properly aligned
+   for TYPE; for example, if sizeof (int) == alignof (int) == 4,
+   malloc (offsetof (struct s, d) + 3 * sizeof (char)) is equivalent
+   to malloc (7) and might yield a pointer that is not a multiple of 4
+   (which means the pointer is not properly aligned for struct s),
+   whereas malloc (FLEXSIZEOF (struct s, d, 3 * sizeof (char))) is
+   equivalent to malloc (8) and must yield a pointer that is a
+   multiple of 4.
+
+   Yield a value less than N if and only if arithmetic overflow occurs.  */
+
+#define FLEXSIZEOF(type, member, n) \
+   ((offsetof (type, member) + FLEXALIGNOF (type) - 1 + (n)) \
+    & ~ (FLEXALIGNOF (type) - 1))
diff --git a/src/grep/lib/fnmatch.c b/src/grep/lib/fnmatch.c
new file mode 100644
index 0000000..b8a71f1
--- /dev/null
+++ b/src/grep/lib/fnmatch.c
@@ -0,0 +1,361 @@
+/* Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <libc-config.h>
+#endif
+
+/* Enable GNU extensions in fnmatch.h.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE    1
+#endif
+
+#include <fnmatch.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <ctype.h>
+#include <string.h>
+#include <stdlib.h>
+#if defined _LIBC || HAVE_ALLOCA
+# include <alloca.h>
+#endif
+#include <wchar.h>
+#include <wctype.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+/* We need some of the locale data (the collation sequence information)
+   but there is no interface to get this information in general.  Therefore
+   we support a correct implementation only in glibc.  */
+#ifdef _LIBC
+# include "../locale/localeinfo.h"
+# include "../locale/coll-lookup.h"
+# include <shlib-compat.h>
+
+# define CONCAT(a,b) __CONCAT(a,b)
+# define btowc __btowc
+# define iswctype __iswctype
+# define mbsrtowcs __mbsrtowcs
+# define mempcpy __mempcpy
+# define strnlen __strnlen
+# define towlower __towlower
+# define wcscat __wcscat
+# define wcslen __wcslen
+# define wctype __wctype
+# define wmemchr __wmemchr
+# define wmempcpy __wmempcpy
+# define fnmatch __fnmatch
+extern int fnmatch (const char *pattern, const char *string, int flags);
+#endif
+
+#ifdef _LIBC
+# if __GNUC__ >= 7
+#  define FALLTHROUGH __attribute__ ((__fallthrough__))
+# else
+#  define FALLTHROUGH ((void) 0)
+# endif
+#else
+# include "attribute.h"
+#endif
+
+#include <intprops.h>
+#include <flexmember.h>
+
+#ifdef _LIBC
+typedef ptrdiff_t idx_t;
+#else
+# include "idx.h"
+#endif
+
+/* We often have to test for FNM_FILE_NAME and FNM_PERIOD being both set.  */
+#define NO_LEADING_PERIOD(flags) \
+  ((flags & (FNM_FILE_NAME | FNM_PERIOD)) == (FNM_FILE_NAME | FNM_PERIOD))
+
+#ifndef _LIBC
+# if HAVE_ALLOCA
+/* The OS usually guarantees only one guard page at the bottom of the stack,
+   and a page size can be as small as 4096 bytes.  So we cannot safely
+   allocate anything larger than 4096 bytes.  Also care for the possibility
+   of a few compiler-allocated temporary stack slots.  */
+#  define __libc_use_alloca(n) ((n) < 4032)
+# else
+/* Just use malloc.  */
+#  define __libc_use_alloca(n) false
+#  undef alloca
+#  define alloca(n) malloc (n)
+# endif
+# define alloca_account(size, avar) ((avar) += (size), alloca (size))
+#endif
+
+/* Provide support for user-defined character classes, based on the functions
+   from ISO C 90 amendment 1.  */
+#ifdef CHARCLASS_NAME_MAX
+# define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
+#else
+/* This shouldn't happen but some implementation might still have this
+   problem.  Use a reasonable default value.  */
+# define CHAR_CLASS_MAX_LENGTH 256
+#endif
+
+#define IS_CHAR_CLASS(string) wctype (string)
+
+/* Avoid depending on library functions or files
+   whose names are inconsistent.  */
+
+/* Global variable.  */
+static int posixly_correct;
+
+/* Note that this evaluates C many times.  */
+#define FOLD(c) ((flags & FNM_CASEFOLD) ? tolower (c) : (c))
+#define CHAR    char
+#define UCHAR   unsigned char
+#define INT     int
+#define FCT     internal_fnmatch
+#define EXT     ext_match
+#define END     end_pattern
+#define STRUCT  fnmatch_struct
+#define L_(CS)  CS
+#define BTOWC(C) btowc (C)
+#define STRLEN(S) strlen (S)
+#define STRCAT(D, S) strcat (D, S)
+#define MEMPCPY(D, S, N) mempcpy (D, S, N)
+#define MEMCHR(S, C, N) memchr (S, C, N)
+#define WIDE_CHAR_VERSION 0
+#ifdef _LIBC
+# include <locale/weight.h>
+# define FINDIDX findidx
+#endif
+#include "fnmatch_loop.c"
+
+
+#define FOLD(c) ((flags & FNM_CASEFOLD) ? towlower (c) : (c))
+#define CHAR    wchar_t
+#define UCHAR   wint_t
+#define INT     wint_t
+#define FCT     internal_fnwmatch
+#define EXT     ext_wmatch
+#define END     end_wpattern
+#define L_(CS)  L##CS
+#define BTOWC(C) (C)
+#define STRLEN(S) wcslen (S)
+#define STRCAT(D, S) wcscat (D, S)
+#define MEMPCPY(D, S, N) wmempcpy (D, S, N)
+#define MEMCHR(S, C, N) wmemchr (S, C, N)
+#define WIDE_CHAR_VERSION 1
+#ifdef _LIBC
+/* Change the name the header defines so it doesn't conflict with
+   the <locale/weight.h> version included above.  */
+# define findidx findidxwc
+# include <locale/weightwc.h>
+# undef findidx
+# define FINDIDX findidxwc
+#endif
+
+#undef IS_CHAR_CLASS
+/* We have to convert the wide character string in a multibyte string.  But
+   we know that the character class names consist of alphanumeric characters
+   from the portable character set, and since the wide character encoding
+   for a member of the portable character set is the same code point as
+   its single-byte encoding, we can use a simplified method to convert the
+   string to a multibyte character string.  */
+static wctype_t
+is_char_class (const wchar_t *wcs)
+{
+  char s[CHAR_CLASS_MAX_LENGTH + 1];
+  char *cp = s;
+
+  do
+    {
+      /* Test for a printable character from the portable character set.  */
+#ifdef _LIBC
+      if (*wcs < 0x20 || *wcs > 0x7e
+          || *wcs == 0x24 || *wcs == 0x40 || *wcs == 0x60)
+        return (wctype_t) 0;
+#else
+      switch (*wcs)
+        {
+        case L' ': case L'!': case L'"': case L'#': case L'%':
+        case L'&': case L'\'': case L'(': case L')': case L'*':
+        case L'+': case L',': case L'-': case L'.': case L'/':
+        case L'0': case L'1': case L'2': case L'3': case L'4':
+        case L'5': case L'6': case L'7': case L'8': case L'9':
+        case L':': case L';': case L'<': case L'=': case L'>':
+        case L'?':
+        case L'A': case L'B': case L'C': case L'D': case L'E':
+        case L'F': case L'G': case L'H': case L'I': case L'J':
+        case L'K': case L'L': case L'M': case L'N': case L'O':
+        case L'P': case L'Q': case L'R': case L'S': case L'T':
+        case L'U': case L'V': case L'W': case L'X': case L'Y':
+        case L'Z':
+        case L'[': case L'\\': case L']': case L'^': case L'_':
+        case L'a': case L'b': case L'c': case L'd': case L'e':
+        case L'f': case L'g': case L'h': case L'i': case L'j':
+        case L'k': case L'l': case L'm': case L'n': case L'o':
+        case L'p': case L'q': case L'r': case L's': case L't':
+        case L'u': case L'v': case L'w': case L'x': case L'y':
+        case L'z': case L'{': case L'|': case L'}': case L'~':
+          break;
+        default:
+          return (wctype_t) 0;
+        }
+#endif
+
+      /* Avoid overrunning the buffer.  */
+      if (cp == s + CHAR_CLASS_MAX_LENGTH)
+        return (wctype_t) 0;
+
+      *cp++ = (char) *wcs++;
+    }
+  while (*wcs != L'\0');
+
+  *cp = '\0';
+
+  return wctype (s);
+}
+#define IS_CHAR_CLASS(string) is_char_class (string)
+
+#include "fnmatch_loop.c"
+
+
+int
+fnmatch (const char *pattern, const char *string, int flags)
+{
+  if (__glibc_unlikely (MB_CUR_MAX != 1))
+    {
+      mbstate_t ps;
+      size_t n;
+      const char *p;
+      wchar_t *wpattern_malloc = NULL;
+      wchar_t *wpattern;
+      wchar_t *wstring_malloc = NULL;
+      wchar_t *wstring;
+      size_t alloca_used = 0;
+
+      /* Convert the strings into wide characters.  */
+      memset (&ps, '\0', sizeof (ps));
+      p = pattern;
+      n = strnlen (pattern, 1024);
+      if (__glibc_likely (n < 1024))
+        {
+          wpattern = (wchar_t *) alloca_account ((n + 1) * sizeof (wchar_t),
+                                                 alloca_used);
+          n = mbsrtowcs (wpattern, &p, n + 1, &ps);
+          if (__glibc_unlikely (n == (size_t) -1))
+            /* Something wrong.
+               XXX Do we have to set 'errno' to something which mbsrtows hasn't
+               already done?  */
+            return -1;
+          if (p)
+            {
+              memset (&ps, '\0', sizeof (ps));
+              goto prepare_wpattern;
+            }
+        }
+      else
+        {
+        prepare_wpattern:
+          n = mbsrtowcs (NULL, &pattern, 0, &ps);
+          if (__glibc_unlikely (n == (size_t) -1))
+            /* Something wrong.
+               XXX Do we have to set 'errno' to something which mbsrtows hasn't
+               already done?  */
+            return -1;
+          if (__glibc_unlikely (n >= (size_t) -1 / sizeof (wchar_t)))
+            {
+              __set_errno (ENOMEM);
+              return -2;
+            }
+          wpattern_malloc = wpattern
+            = (wchar_t *) malloc ((n + 1) * sizeof (wchar_t));
+          assert (mbsinit (&ps));
+          if (wpattern == NULL)
+            return -2;
+          (void) mbsrtowcs (wpattern, &pattern, n + 1, &ps);
+        }
+
+      assert (mbsinit (&ps));
+      n = strnlen (string, 1024);
+      p = string;
+      if (__glibc_likely (n < 1024))
+        {
+          wstring = (wchar_t *) alloca_account ((n + 1) * sizeof (wchar_t),
+                                                alloca_used);
+          n = mbsrtowcs (wstring, &p, n + 1, &ps);
+          if (__glibc_unlikely (n == (size_t) -1))
+            {
+              /* Something wrong.
+                 XXX Do we have to set 'errno' to something which
+                 mbsrtows hasn't already done?  */
+            free_return:
+              free (wpattern_malloc);
+              return -1;
+            }
+          if (p)
+            {
+              memset (&ps, '\0', sizeof (ps));
+              goto prepare_wstring;
+            }
+        }
+      else
+        {
+        prepare_wstring:
+          n = mbsrtowcs (NULL, &string, 0, &ps);
+          if (__glibc_unlikely (n == (size_t) -1))
+            /* Something wrong.
+               XXX Do we have to set 'errno' to something which mbsrtows hasn't
+               already done?  */
+            goto free_return;
+          if (__glibc_unlikely (n >= (size_t) -1 / sizeof (wchar_t)))
+            {
+              free (wpattern_malloc);
+              __set_errno (ENOMEM);
+              return -2;
+            }
+
+          wstring_malloc = wstring
+            = (wchar_t *) malloc ((n + 1) * sizeof (wchar_t));
+          if (wstring == NULL)
+            {
+              free (wpattern_malloc);
+              return -2;
+            }
+          assert (mbsinit (&ps));
+          (void) mbsrtowcs (wstring, &string, n + 1, &ps);
+        }
+
+      int res = internal_fnwmatch (wpattern, wstring, wstring + n,
+                                   flags & FNM_PERIOD, flags, NULL,
+                                   alloca_used);
+
+      free (wstring_malloc);
+      free (wpattern_malloc);
+
+      return res;
+    }
+
+  return internal_fnmatch (pattern, string, string + strlen (string),
+                           flags & FNM_PERIOD, flags, NULL, 0);
+}
+
+#undef fnmatch
+versioned_symbol (libc, __fnmatch, fnmatch, GLIBC_2_2_3);
+#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_2_3)
+strong_alias (__fnmatch, __fnmatch_old)
+compat_symbol (libc, __fnmatch_old, fnmatch, GLIBC_2_0);
+#endif
+libc_hidden_ver (__fnmatch, fnmatch)
diff --git a/src/grep/lib/fnmatch.in.h b/src/grep/lib/fnmatch.in.h
new file mode 100644
index 0000000..146c0e4
--- /dev/null
+++ b/src/grep/lib/fnmatch.in.h
@@ -0,0 +1,116 @@
+/* Substitute for and wrapper around <fnmatch.h>.
+   Copyright (C) 1991-1993, 1996-1999, 2001-2003, 2005, 2007, 2009-2021 Free
+   Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _@GUARD_PREFIX@_FNMATCH_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* The include_next requires a split double-inclusion guard.  */
+#if @HAVE_FNMATCH_H@ && !@REPLACE_FNMATCH@
+# @INCLUDE_NEXT@ @NEXT_FNMATCH_H@
+#endif
+
+#ifndef _@GUARD_PREFIX@_FNMATCH_H
+#define _@GUARD_PREFIX@_FNMATCH_H
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+#if defined(KMK_GREP)
+# include "c++defs.h"
+#endif
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+#if defined(KMK_GREP)
+# include "arg-nonnull.h"
+#endif
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+#if !@HAVE_FNMATCH_H@ || @REPLACE_FNMATCH@
+
+/* We #undef these before defining them because some losing systems
+   (HP-UX A.08.07 for example) define these in <unistd.h>.  */
+#undef  FNM_PATHNAME
+#undef  FNM_NOESCAPE
+#undef  FNM_PERIOD
+
+/* Bits set in the FLAGS argument to 'fnmatch'.  */
+#define FNM_PATHNAME    (1 << 0) /* No wildcard can ever match '/'.  */
+#define FNM_NOESCAPE    (1 << 1) /* Backslashes don't quote special chars.  */
+#define FNM_PERIOD      (1 << 2) /* Leading '.' is matched only explicitly.  */
+
+#if !defined _POSIX_C_SOURCE || _POSIX_C_SOURCE < 2 || defined _GNU_SOURCE
+# define FNM_FILE_NAME   FNM_PATHNAME   /* Preferred GNU name.  */
+# define FNM_LEADING_DIR (1 << 3)       /* Ignore '/...' after a match.  */
+# define FNM_CASEFOLD    (1 << 4)       /* Compare without regard to case.  */
+# define FNM_EXTMATCH    (1 << 5)       /* Use ksh-like extended matching. */
+#endif
+
+/* Value returned by 'fnmatch' if STRING does not match PATTERN.  */
+#define FNM_NOMATCH     1
+
+/* This value is returned if the implementation does not support
+   'fnmatch'.  Since this is not the case here it will never be
+   returned but the conformance test suites still require the symbol
+   to be defined.  */
+#ifdef _XOPEN_SOURCE
+# define FNM_NOSYS      (-1)
+#endif
+
+#endif
+
+
+#if @GNULIB_FNMATCH@
+/* Match NAME against the file name pattern PATTERN,
+   returning zero if it matches, FNM_NOMATCH if not.  */
+# if @REPLACE_FNMATCH@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define fnmatch rpl_fnmatch
+#  endif
+_GL_FUNCDECL_RPL (fnmatch, int,
+                  (const char *pattern, const char *name, int flags)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (fnmatch, int,
+                  (const char *pattern, const char *name, int flags));
+# else
+#  if !@HAVE_FNMATCH@
+_GL_FUNCDECL_SYS (fnmatch, int,
+                  (const char *pattern, const char *name, int flags)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (fnmatch, int,
+                  (const char *pattern, const char *name, int flags));
+# endif
+# if !GNULIB_FNMATCH_GNU && __GLIBC__ >= 2
+_GL_CXXALIASWARN (fnmatch);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef fnmatch
+# if HAVE_RAW_DECL_FNMATCH
+_GL_WARN_ON_USE (fnmatch,
+                 "fnmatch does not portably work - "
+                 "use gnulib module fnmatch for portability or gnulib module fnmatch-gnu for a glibc compatible implementation");
+# endif
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_FNMATCH_H */
+#endif /* _@GUARD_PREFIX@_FNMATCH_H */
diff --git a/src/grep/lib/fnmatch_loop.c b/src/grep/lib/fnmatch_loop.c
new file mode 100644
index 0000000..7f938af
--- /dev/null
+++ b/src/grep/lib/fnmatch_loop.c
@@ -0,0 +1,1211 @@
+/* Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifdef _LIBC
+# include <stdint.h>
+#endif
+
+struct STRUCT
+{
+  const CHAR *pattern;
+  const CHAR *string;
+  bool no_leading_period;
+};
+
+/* Match STRING against the file name pattern PATTERN, returning zero if
+   it matches, nonzero if not.  */
+static int FCT (const CHAR *pattern, const CHAR *string,
+                const CHAR *string_end, bool no_leading_period, int flags,
+                struct STRUCT *ends, size_t alloca_used);
+static int EXT (INT opt, const CHAR *pattern, const CHAR *string,
+                const CHAR *string_end, bool no_leading_period, int flags,
+                size_t alloca_used);
+static const CHAR *END (const CHAR *patternp);
+
+static int
+FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
+     bool no_leading_period, int flags, struct STRUCT *ends, size_t alloca_used)
+{
+  const CHAR *p = pattern, *n = string;
+  UCHAR c;
+#ifdef _LIBC
+# if WIDE_CHAR_VERSION
+  const char *collseq = (const char *)
+    _NL_CURRENT(LC_COLLATE, _NL_COLLATE_COLLSEQWC);
+# else
+  const UCHAR *collseq = (const UCHAR *)
+    _NL_CURRENT(LC_COLLATE, _NL_COLLATE_COLLSEQMB);
+# endif
+#endif
+
+  while ((c = *p++) != L_('\0'))
+    {
+      bool new_no_leading_period = false;
+      c = FOLD (c);
+
+      switch (c)
+        {
+        case L_('?'):
+          if (__glibc_unlikely (flags & FNM_EXTMATCH) && *p == '(')
+            {
+              int res = EXT (c, p, n, string_end, no_leading_period,
+                             flags, alloca_used);
+              if (res != -1)
+                return res;
+            }
+
+          if (n == string_end)
+            return FNM_NOMATCH;
+          else if (*n == L_('/') && (flags & FNM_FILE_NAME))
+            return FNM_NOMATCH;
+          else if (*n == L_('.') && no_leading_period)
+            return FNM_NOMATCH;
+          break;
+
+        case L_('\\'):
+          if (!(flags & FNM_NOESCAPE))
+            {
+              c = *p++;
+              if (c == L_('\0'))
+                /* Trailing \ loses.  */
+                return FNM_NOMATCH;
+              c = FOLD (c);
+            }
+          if (n == string_end || FOLD ((UCHAR) *n) != c)
+            return FNM_NOMATCH;
+          break;
+
+        case L_('*'):
+          if (__glibc_unlikely (flags & FNM_EXTMATCH) && *p == '(')
+            {
+              int res = EXT (c, p, n, string_end, no_leading_period,
+                             flags, alloca_used);
+              if (res != -1)
+                return res;
+            }
+          else if (ends != NULL)
+            {
+              ends->pattern = p - 1;
+              ends->string = n;
+              ends->no_leading_period = no_leading_period;
+              return 0;
+            }
+
+          if (n != string_end && *n == L_('.') && no_leading_period)
+            return FNM_NOMATCH;
+
+          for (c = *p++; c == L_('?') || c == L_('*'); c = *p++)
+            {
+              if (*p == L_('(') && (flags & FNM_EXTMATCH) != 0)
+                {
+                  const CHAR *endp = END (p);
+                  if (endp != p)
+                    {
+                      /* This is a pattern.  Skip over it.  */
+                      p = endp;
+                      continue;
+                    }
+                }
+
+              if (c == L_('?'))
+                {
+                  /* A ? needs to match one character.  */
+                  if (n == string_end)
+                    /* There isn't another character; no match.  */
+                    return FNM_NOMATCH;
+                  else if (*n == L_('/')
+                           && __glibc_unlikely (flags & FNM_FILE_NAME))
+                    /* A slash does not match a wildcard under
+                       FNM_FILE_NAME.  */
+                    return FNM_NOMATCH;
+                  else
+                    /* One character of the string is consumed in matching
+                       this ? wildcard, so *??? won't match if there are
+                       less than three characters.  */
+                    ++n;
+                }
+            }
+
+          if (c == L_('\0'))
+            /* The wildcard(s) is/are the last element of the pattern.
+               If the name is a file name and contains another slash
+               this means it cannot match, unless the FNM_LEADING_DIR
+               flag is set.  */
+            {
+              int result = (flags & FNM_FILE_NAME) == 0 ? 0 : FNM_NOMATCH;
+
+              if (flags & FNM_FILE_NAME)
+                {
+                  if (flags & FNM_LEADING_DIR)
+                    result = 0;
+                  else
+                    {
+                      if (MEMCHR (n, L_('/'), string_end - n) == NULL)
+                        result = 0;
+                    }
+                }
+
+              return result;
+            }
+          else
+            {
+              const CHAR *endp;
+              struct STRUCT end;
+
+              end.pattern = NULL;
+              endp = MEMCHR (n, (flags & FNM_FILE_NAME) ? L_('/') : L_('\0'),
+                             string_end - n);
+              if (endp == NULL)
+                endp = string_end;
+
+              if (c == L_('[')
+                  || (__glibc_unlikely (flags & FNM_EXTMATCH)
+                      && (c == L_('@') || c == L_('+') || c == L_('!'))
+                      && *p == L_('(')))
+                {
+                  int flags2 = ((flags & FNM_FILE_NAME)
+                                ? flags : (flags & ~FNM_PERIOD));
+
+                  for (--p; n < endp; ++n, no_leading_period = false)
+                    if (FCT (p, n, string_end, no_leading_period, flags2,
+                             &end, alloca_used) == 0)
+                      goto found;
+                }
+              else if (c == L_('/') && (flags & FNM_FILE_NAME))
+                {
+                  while (n < string_end && *n != L_('/'))
+                    ++n;
+                  if (n < string_end && *n == L_('/')
+                      && (FCT (p, n + 1, string_end, flags & FNM_PERIOD, flags,
+                               NULL, alloca_used) == 0))
+                    return 0;
+                }
+              else
+                {
+                  int flags2 = ((flags & FNM_FILE_NAME)
+                                ? flags : (flags & ~FNM_PERIOD));
+
+                  if (c == L_('\\') && !(flags & FNM_NOESCAPE))
+                    c = *p;
+                  c = FOLD (c);
+                  for (--p; n < endp; ++n, no_leading_period = false)
+                    if (FOLD ((UCHAR) *n) == c
+                        && (FCT (p, n, string_end, no_leading_period, flags2,
+                                 &end, alloca_used) == 0))
+                      {
+                      found:
+                        if (end.pattern == NULL)
+                          return 0;
+                        break;
+                      }
+                  if (end.pattern != NULL)
+                    {
+                      p = end.pattern;
+                      n = end.string;
+                      no_leading_period = end.no_leading_period;
+                      continue;
+                    }
+                }
+            }
+
+          /* If we come here no match is possible with the wildcard.  */
+          return FNM_NOMATCH;
+
+        case L_('['):
+          {
+            /* Nonzero if the sense of the character class is inverted.  */
+            const CHAR *p_init = p;
+            const CHAR *n_init = n;
+            bool not;
+            CHAR cold;
+            UCHAR fn;
+
+            if (posixly_correct == 0)
+              posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1;
+
+            if (n == string_end)
+              return FNM_NOMATCH;
+
+            if (*n == L_('.') && no_leading_period)
+              return FNM_NOMATCH;
+
+            if (*n == L_('/') && (flags & FNM_FILE_NAME))
+              /* '/' cannot be matched.  */
+              return FNM_NOMATCH;
+
+            not = (*p == L_('!') || (posixly_correct < 0 && *p == L_('^')));
+            if (not)
+              ++p;
+
+            fn = FOLD ((UCHAR) *n);
+
+            c = *p++;
+            for (;;)
+              {
+                if (!(flags & FNM_NOESCAPE) && c == L_('\\'))
+                  {
+                    if (*p == L_('\0'))
+                      return FNM_NOMATCH;
+                    c = FOLD ((UCHAR) *p);
+                    ++p;
+
+                    goto normal_bracket;
+                  }
+                else if (c == L_('[') && *p == L_(':'))
+                  {
+                    /* Leave room for the null.  */
+                    CHAR str[CHAR_CLASS_MAX_LENGTH + 1];
+                    size_t c1 = 0;
+                    wctype_t wt;
+                    const CHAR *startp = p;
+
+                    for (;;)
+                      {
+                        if (c1 == CHAR_CLASS_MAX_LENGTH)
+                          /* The name is too long and therefore the pattern
+                             is ill-formed.  */
+                          return FNM_NOMATCH;
+
+                        c = *++p;
+                        if (c == L_(':') && p[1] == L_(']'))
+                          {
+                            p += 2;
+                            break;
+                          }
+                        if (c < L_('a') || c >= L_('z'))
+                          {
+                            /* This cannot possibly be a character class name.
+                               Match it as a normal range.  */
+                            p = startp;
+                            c = L_('[');
+                            goto normal_bracket;
+                          }
+                        str[c1++] = c;
+                      }
+                    str[c1] = L_('\0');
+
+                    wt = IS_CHAR_CLASS (str);
+                    if (wt == 0)
+                      /* Invalid character class name.  */
+                      return FNM_NOMATCH;
+
+#if defined _LIBC && ! WIDE_CHAR_VERSION
+                    /* The following code is glibc specific but does
+                       there a good job in speeding up the code since
+                       we can avoid the btowc() call.  */
+                    if (_ISCTYPE ((UCHAR) *n, wt))
+                      goto matched;
+#else
+                    if (iswctype (BTOWC ((UCHAR) *n), wt))
+                      goto matched;
+#endif
+                    c = *p++;
+                  }
+#ifdef _LIBC
+                else if (c == L_('[') && *p == L_('='))
+                  {
+                    /* It's important that STR be a scalar variable rather
+                       than a one-element array, because GCC (at least 4.9.2
+                       -O2 on x86-64) can be confused by the array and
+                       diagnose a "used initialized" in a dead branch in the
+                       findidx function.  */
+                    UCHAR str;
+                    uint32_t nrules =
+                      _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
+                    const CHAR *startp = p;
+
+                    c = *++p;
+                    if (c == L_('\0'))
+                      {
+                        p = startp;
+                        c = L_('[');
+                        goto normal_bracket;
+                      }
+                    str = c;
+
+                    c = *++p;
+                    if (c != L_('=') || p[1] != L_(']'))
+                      {
+                        p = startp;
+                        c = L_('[');
+                        goto normal_bracket;
+                      }
+                    p += 2;
+
+                    if (nrules == 0)
+                      {
+                        if ((UCHAR) *n == str)
+                          goto matched;
+                      }
+                    else
+                      {
+                        const int32_t *table;
+# if WIDE_CHAR_VERSION
+                        const int32_t *weights;
+                        const wint_t *extra;
+# else
+                        const unsigned char *weights;
+                        const unsigned char *extra;
+# endif
+                        const int32_t *indirect;
+                        int32_t idx;
+                        const UCHAR *cp = (const UCHAR *) &str;
+
+# if WIDE_CHAR_VERSION
+                        table = (const int32_t *)
+                          _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEWC);
+                        weights = (const int32_t *)
+                          _NL_CURRENT (LC_COLLATE, _NL_COLLATE_WEIGHTWC);
+                        extra = (const wint_t *)
+                          _NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAWC);
+                        indirect = (const int32_t *)
+                          _NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTWC);
+# else
+                        table = (const int32_t *)
+                          _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
+                        weights = (const unsigned char *)
+                          _NL_CURRENT (LC_COLLATE, _NL_COLLATE_WEIGHTMB);
+                        extra = (const unsigned char *)
+                          _NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAMB);
+                        indirect = (const int32_t *)
+                          _NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTMB);
+# endif
+
+                        idx = FINDIDX (table, indirect, extra, &cp, 1);
+                        if (idx != 0)
+                          {
+                            /* We found a table entry.  Now see whether the
+                               character we are currently at has the same
+                               equivalence class value.  */
+                            int len = weights[idx & 0xffffff];
+                            int32_t idx2;
+                            const UCHAR *np = (const UCHAR *) n;
+
+                            idx2 = FINDIDX (table, indirect, extra,
+                                            &np, string_end - n);
+                            if (idx2 != 0
+                                && (idx >> 24) == (idx2 >> 24)
+                                && len == weights[idx2 & 0xffffff])
+                              {
+                                int cnt = 0;
+
+                                idx &= 0xffffff;
+                                idx2 &= 0xffffff;
+
+                                while (cnt < len
+                                       && (weights[idx + 1 + cnt]
+                                           == weights[idx2 + 1 + cnt]))
+                                  ++cnt;
+
+                                if (cnt == len)
+                                  goto matched;
+                              }
+                          }
+                      }
+
+                    c = *p++;
+                  }
+#endif
+                else if (c == L_('\0'))
+                  {
+                    /* [ unterminated, treat as normal character.  */
+                    p = p_init;
+                    n = n_init;
+                    c = L_('[');
+                    goto normal_match;
+                  }
+                else
+                  {
+                    bool is_range = false;
+
+#ifdef _LIBC
+                    bool is_seqval = false;
+
+                    if (c == L_('[') && *p == L_('.'))
+                      {
+                        uint32_t nrules =
+                          _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
+                        const CHAR *startp = p;
+                        size_t c1 = 0;
+
+                        while (1)
+                          {
+                            c = *++p;
+                            if (c == L_('.') && p[1] == L_(']'))
+                              {
+                                p += 2;
+                                break;
+                              }
+                            if (c == '\0')
+                              return FNM_NOMATCH;
+                            ++c1;
+                          }
+
+                        /* We have to handling the symbols differently in
+                           ranges since then the collation sequence is
+                           important.  */
+                        is_range = *p == L_('-') && p[1] != L_('\0');
+
+                        if (nrules == 0)
+                          {
+                            /* There are no names defined in the collation
+                               data.  Therefore we only accept the trivial
+                               names consisting of the character itself.  */
+                            if (c1 != 1)
+                              return FNM_NOMATCH;
+
+                            if (!is_range && *n == startp[1])
+                              goto matched;
+
+                            cold = startp[1];
+                            c = *p++;
+                          }
+                        else
+                          {
+                            int32_t table_size;
+                            const int32_t *symb_table;
+                            const unsigned char *extra;
+                            int32_t idx;
+                            int32_t elem;
+# if WIDE_CHAR_VERSION
+                            CHAR *wextra;
+# endif
+
+                            table_size =
+                              _NL_CURRENT_WORD (LC_COLLATE,
+                                                _NL_COLLATE_SYMB_HASH_SIZEMB);
+                            symb_table = (const int32_t *)
+                              _NL_CURRENT (LC_COLLATE,
+                                           _NL_COLLATE_SYMB_TABLEMB);
+                            extra = (const unsigned char *)
+                              _NL_CURRENT (LC_COLLATE,
+                                           _NL_COLLATE_SYMB_EXTRAMB);
+
+                            for (elem = 0; elem < table_size; elem++)
+                              if (symb_table[2 * elem] != 0)
+                                {
+                                  idx = symb_table[2 * elem + 1];
+                                  /* Skip the name of collating element.  */
+                                  idx += 1 + extra[idx];
+# if WIDE_CHAR_VERSION
+                                  /* Skip the byte sequence of the
+                                     collating element.  */
+                                  idx += 1 + extra[idx];
+                                  /* Adjust for the alignment.  */
+                                  idx = (idx + 3) & ~3;
+
+                                  wextra = (CHAR *) &extra[idx + 4];
+
+                                  if (/* Compare the length of the sequence.  */
+                                      c1 == wextra[0]
+                                      /* Compare the wide char sequence.  */
+                                      && (__wmemcmp (startp + 1, &wextra[1],
+                                                     c1)
+                                          == 0))
+                                    /* Yep, this is the entry.  */
+                                    break;
+# else
+                                  if (/* Compare the length of the sequence.  */
+                                      c1 == extra[idx]
+                                      /* Compare the byte sequence.  */
+                                      && memcmp (startp + 1,
+                                                 &extra[idx + 1], c1) == 0)
+                                    /* Yep, this is the entry.  */
+                                    break;
+# endif
+                                }
+
+                            if (elem < table_size)
+                              {
+                                /* Compare the byte sequence but only if
+                                   this is not part of a range.  */
+                                if (! is_range
+
+# if WIDE_CHAR_VERSION
+                                    && __wmemcmp (n, &wextra[1], c1) == 0
+# else
+                                    && memcmp (n, &extra[idx + 1], c1) == 0
+# endif
+                                    )
+                                  {
+                                    n += c1 - 1;
+                                    goto matched;
+                                  }
+
+                                /* Get the collation sequence value.  */
+                                is_seqval = true;
+# if WIDE_CHAR_VERSION
+                                cold = wextra[1 + wextra[0]];
+# else
+                                idx += 1 + extra[idx];
+                                /* Adjust for the alignment.  */
+                                idx = (idx + 3) & ~3;
+                                cold = *((int32_t *) &extra[idx]);
+# endif
+
+                                c = *p++;
+                              }
+                            else if (c1 == 1)
+                              {
+                                /* No valid character.  Match it as a
+                                   single byte.  */
+                                if (!is_range && *n == startp[1])
+                                  goto matched;
+
+                                cold = startp[1];
+                                c = *p++;
+                              }
+                            else
+                              return FNM_NOMATCH;
+                          }
+                      }
+                    else
+#endif
+                      {
+                        c = FOLD (c);
+                      normal_bracket:
+
+                        /* We have to handling the symbols differently in
+                           ranges since then the collation sequence is
+                           important.  */
+                        is_range = (*p == L_('-') && p[1] != L_('\0')
+                                    && p[1] != L_(']'));
+
+                        if (!is_range && c == fn)
+                          goto matched;
+
+#if _LIBC
+                        /* This is needed if we goto normal_bracket; from
+                           outside of is_seqval's scope.  */
+                        is_seqval = false;
+#endif
+                        cold = c;
+                        c = *p++;
+                      }
+
+                    if (c == L_('-') && *p != L_(']'))
+                      {
+#if _LIBC
+                        /* We have to find the collation sequence
+                           value for C.  Collation sequence is nothing
+                           we can regularly access.  The sequence
+                           value is defined by the order in which the
+                           definitions of the collation values for the
+                           various characters appear in the source
+                           file.  A strange concept, nowhere
+                           documented.  */
+                        uint32_t fcollseq;
+                        uint32_t lcollseq;
+                        UCHAR cend = *p++;
+
+# if WIDE_CHAR_VERSION
+                        /* Search in the 'names' array for the characters.  */
+                        fcollseq = __collseq_table_lookup (collseq, fn);
+                        if (fcollseq == ~((uint32_t) 0))
+                          /* XXX We don't know anything about the character
+                             we are supposed to match.  This means we are
+                             failing.  */
+                          goto range_not_matched;
+
+                        if (is_seqval)
+                          lcollseq = cold;
+                        else
+                          lcollseq = __collseq_table_lookup (collseq, cold);
+# else
+                        fcollseq = collseq[fn];
+                        lcollseq = is_seqval ? cold : collseq[(UCHAR) cold];
+# endif
+
+                        is_seqval = false;
+                        if (cend == L_('[') && *p == L_('.'))
+                          {
+                            uint32_t nrules =
+                              _NL_CURRENT_WORD (LC_COLLATE,
+                                                _NL_COLLATE_NRULES);
+                            const CHAR *startp = p;
+                            size_t c1 = 0;
+
+                            while (1)
+                              {
+                                c = *++p;
+                                if (c == L_('.') && p[1] == L_(']'))
+                                  {
+                                    p += 2;
+                                    break;
+                                  }
+                                if (c == '\0')
+                                  return FNM_NOMATCH;
+                                ++c1;
+                              }
+
+                            if (nrules == 0)
+                              {
+                                /* There are no names defined in the
+                                   collation data.  Therefore we only
+                                   accept the trivial names consisting
+                                   of the character itself.  */
+                                if (c1 != 1)
+                                  return FNM_NOMATCH;
+
+                                cend = startp[1];
+                              }
+                            else
+                              {
+                                int32_t table_size;
+                                const int32_t *symb_table;
+                                const unsigned char *extra;
+                                int32_t idx;
+                                int32_t elem;
+# if WIDE_CHAR_VERSION
+                                CHAR *wextra;
+# endif
+
+                                table_size =
+                                  _NL_CURRENT_WORD (LC_COLLATE,
+                                                    _NL_COLLATE_SYMB_HASH_SIZEMB);
+                                symb_table = (const int32_t *)
+                                  _NL_CURRENT (LC_COLLATE,
+                                               _NL_COLLATE_SYMB_TABLEMB);
+                                extra = (const unsigned char *)
+                                  _NL_CURRENT (LC_COLLATE,
+                                               _NL_COLLATE_SYMB_EXTRAMB);
+
+                                for (elem = 0; elem < table_size; elem++)
+                                  if (symb_table[2 * elem] != 0)
+                                    {
+                                      idx = symb_table[2 * elem + 1];
+                                      /* Skip the name of collating
+                                         element.  */
+                                      idx += 1 + extra[idx];
+# if WIDE_CHAR_VERSION
+                                      /* Skip the byte sequence of the
+                                         collating element.  */
+                                      idx += 1 + extra[idx];
+                                      /* Adjust for the alignment.  */
+                                      idx = (idx + 3) & ~3;
+
+                                      wextra = (CHAR *) &extra[idx + 4];
+
+                                      if (/* Compare the length of the
+                                             sequence.  */
+                                          c1 == wextra[0]
+                                          /* Compare the wide char sequence.  */
+                                          && (__wmemcmp (startp + 1,
+                                                         &wextra[1], c1)
+                                              == 0))
+                                        /* Yep, this is the entry.  */
+                                        break;
+# else
+                                      if (/* Compare the length of the
+                                             sequence.  */
+                                          c1 == extra[idx]
+                                          /* Compare the byte sequence.  */
+                                          && memcmp (startp + 1,
+                                                     &extra[idx + 1], c1) == 0)
+                                        /* Yep, this is the entry.  */
+                                        break;
+# endif
+                                    }
+
+                                if (elem < table_size)
+                                  {
+                                    /* Get the collation sequence value.  */
+                                    is_seqval = true;
+# if WIDE_CHAR_VERSION
+                                    cend = wextra[1 + wextra[0]];
+# else
+                                    idx += 1 + extra[idx];
+                                    /* Adjust for the alignment.  */
+                                    idx = (idx + 3) & ~3;
+                                    cend = *((int32_t *) &extra[idx]);
+# endif
+                                  }
+                                else if (c1 == 1)
+                                  {
+                                    cend = startp[1];
+                                    c = *p++;
+                                  }
+                                else
+                                  return FNM_NOMATCH;
+                              }
+                          }
+                        else
+                          {
+                            if (!(flags & FNM_NOESCAPE) && cend == L_('\\'))
+                              cend = *p++;
+                            if (cend == L_('\0'))
+                              return FNM_NOMATCH;
+                            cend = FOLD (cend);
+                          }
+
+                        /* XXX It is not entirely clear to me how to handle
+                           characters which are not mentioned in the
+                           collation specification.  */
+                        if (
+# if WIDE_CHAR_VERSION
+                            lcollseq == 0xffffffff ||
+# endif
+                            lcollseq <= fcollseq)
+                          {
+                            /* We have to look at the upper bound.  */
+                            uint32_t hcollseq;
+
+                            if (is_seqval)
+                              hcollseq = cend;
+                            else
+                              {
+# if WIDE_CHAR_VERSION
+                                hcollseq =
+                                  __collseq_table_lookup (collseq, cend);
+                                if (hcollseq == ~((uint32_t) 0))
+                                  {
+                                    /* Hum, no information about the upper
+                                       bound.  The matching succeeds if the
+                                       lower bound is matched exactly.  */
+                                    if (lcollseq != fcollseq)
+                                      goto range_not_matched;
+
+                                    goto matched;
+                                  }
+# else
+                                hcollseq = collseq[cend];
+# endif
+                              }
+
+                            if (lcollseq <= hcollseq && fcollseq <= hcollseq)
+                              goto matched;
+                          }
+# if WIDE_CHAR_VERSION
+                      range_not_matched:
+# endif
+#else
+                        /* We use a boring value comparison of the character
+                           values.  This is better than comparing using
+                           'strcoll' since the latter would have surprising
+                           and sometimes fatal consequences.  */
+                        UCHAR cend = *p++;
+
+                        if (!(flags & FNM_NOESCAPE) && cend == L_('\\'))
+                          cend = *p++;
+                        if (cend == L_('\0'))
+                          return FNM_NOMATCH;
+
+                        /* It is a range.  */
+                        if ((UCHAR) cold <= fn && fn <= cend)
+                          goto matched;
+#endif
+
+                        c = *p++;
+                      }
+                  }
+
+                if (c == L_(']'))
+                  break;
+              }
+
+            if (!not)
+              return FNM_NOMATCH;
+            break;
+
+          matched:
+            /* Skip the rest of the [...] that already matched.  */
+            while ((c = *p++) != L_(']'))
+              {
+                if (c == L_('\0'))
+                  /* [... (unterminated) loses.  */
+                  return FNM_NOMATCH;
+
+                if (!(flags & FNM_NOESCAPE) && c == L_('\\'))
+                  {
+                    if (*p == L_('\0'))
+                      return FNM_NOMATCH;
+                    /* XXX 1003.2d11 is unclear if this is right.  */
+                    ++p;
+                  }
+                else if (c == L_('[') && *p == L_(':'))
+                  {
+                    int c1 = 0;
+                    const CHAR *startp = p;
+
+                    while (1)
+                      {
+                        c = *++p;
+                        if (++c1 == CHAR_CLASS_MAX_LENGTH)
+                          return FNM_NOMATCH;
+
+                        if (*p == L_(':') && p[1] == L_(']'))
+                          break;
+
+                        if (c < L_('a') || c >= L_('z'))
+                          {
+                            p = startp - 2;
+                            break;
+                          }
+                      }
+                    p += 2;
+                  }
+                else if (c == L_('[') && *p == L_('='))
+                  {
+                    c = *++p;
+                    if (c == L_('\0'))
+                      return FNM_NOMATCH;
+                    c = *++p;
+                    if (c != L_('=') || p[1] != L_(']'))
+                      return FNM_NOMATCH;
+                    p += 2;
+                  }
+                else if (c == L_('[') && *p == L_('.'))
+                  {
+                    while (1)
+                      {
+                        c = *++p;
+                        if (c == L_('\0'))
+                          return FNM_NOMATCH;
+
+                        if (c == L_('.') && p[1] == L_(']'))
+                          break;
+                      }
+                    p += 2;
+                  }
+              }
+            if (not)
+              return FNM_NOMATCH;
+          }
+          break;
+
+        case L_('+'):
+        case L_('@'):
+        case L_('!'):
+          if (__glibc_unlikely (flags & FNM_EXTMATCH) && *p == '(')
+            {
+              int res = EXT (c, p, n, string_end, no_leading_period, flags,
+                             alloca_used);
+              if (res != -1)
+                return res;
+            }
+          goto normal_match;
+
+        case L_('/'):
+          if (NO_LEADING_PERIOD (flags))
+            {
+              if (n == string_end || c != (UCHAR) *n)
+                return FNM_NOMATCH;
+
+              new_no_leading_period = true;
+              break;
+            }
+          FALLTHROUGH;
+        default:
+        normal_match:
+          if (n == string_end || c != FOLD ((UCHAR) *n))
+            return FNM_NOMATCH;
+        }
+
+      no_leading_period = new_no_leading_period;
+      ++n;
+    }
+
+  if (n == string_end)
+    return 0;
+
+  if ((flags & FNM_LEADING_DIR) && n != string_end && *n == L_('/'))
+    /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz".  */
+    return 0;
+
+  return FNM_NOMATCH;
+}
+
+
+static const CHAR *
+END (const CHAR *pattern)
+{
+  const CHAR *p = pattern;
+
+  while (1)
+    if (*++p == L_('\0'))
+      /* This is an invalid pattern.  */
+      return pattern;
+    else if (*p == L_('['))
+      {
+        /* Handle brackets special.  */
+        if (posixly_correct == 0)
+          posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1;
+
+        /* Skip the not sign.  We have to recognize it because of a possibly
+           following ']'.  */
+        if (*++p == L_('!') || (posixly_correct < 0 && *p == L_('^')))
+          ++p;
+        /* A leading ']' is recognized as such.  */
+        if (*p == L_(']'))
+          ++p;
+        /* Skip over all characters of the list.  */
+        while (*p != L_(']'))
+          if (*p++ == L_('\0'))
+            /* This is no valid pattern.  */
+            return pattern;
+      }
+    else if ((*p == L_('?') || *p == L_('*') || *p == L_('+') || *p == L_('@')
+              || *p == L_('!')) && p[1] == L_('('))
+      {
+        p = END (p + 1);
+        if (*p == L_('\0'))
+          /* This is an invalid pattern.  */
+          return pattern;
+      }
+    else if (*p == L_(')'))
+      break;
+
+  return p + 1;
+}
+
+
+static int
+EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
+     bool no_leading_period, int flags, size_t alloca_used)
+{
+  const CHAR *startp;
+  ptrdiff_t level;
+  struct patternlist
+  {
+    struct patternlist *next;
+    CHAR malloced;
+    CHAR str __flexarr;
+  } *list = NULL;
+  struct patternlist **lastp = &list;
+  size_t pattern_len = STRLEN (pattern);
+  bool any_malloced = false;
+  const CHAR *p;
+  const CHAR *rs;
+  int retval = 0;
+
+  /* Parse the pattern.  Store the individual parts in the list.  */
+  level = 0;
+  for (startp = p = pattern + 1; level >= 0; ++p)
+    if (*p == L_('\0'))
+      {
+        /* This is an invalid pattern.  */
+        retval = -1;
+        goto out;
+      }
+    else if (*p == L_('['))
+      {
+        /* Handle brackets special.  */
+        if (posixly_correct == 0)
+          posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1;
+
+        /* Skip the not sign.  We have to recognize it because of a possibly
+           following ']'.  */
+        if (*++p == L_('!') || (posixly_correct < 0 && *p == L_('^')))
+          ++p;
+        /* A leading ']' is recognized as such.  */
+        if (*p == L_(']'))
+          ++p;
+        /* Skip over all characters of the list.  */
+        while (*p != L_(']'))
+          if (*p++ == L_('\0'))
+            {
+              /* This is no valid pattern.  */
+              retval = -1;
+              goto out;
+            }
+      }
+    else if ((*p == L_('?') || *p == L_('*') || *p == L_('+') || *p == L_('@')
+              || *p == L_('!')) && p[1] == L_('('))
+      /* Remember the nesting level.  */
+      ++level;
+    else if (*p == L_(')'))
+      {
+        if (level-- == 0)
+          {
+            /* This means we found the end of the pattern.  */
+#define NEW_PATTERN \
+            struct patternlist *newp;                                         \
+            size_t plen = (opt == L_('?') || opt == L_('@')                   \
+                           ? pattern_len : (p - startp + 1UL));               \
+            idx_t slen = FLEXSIZEOF (struct patternlist, str, 0);             \
+            idx_t new_used = alloca_used + slen;                              \
+            idx_t plensize;                                                   \
+            if (INT_MULTIPLY_WRAPV (plen, sizeof (CHAR), &plensize)           \
+                || INT_ADD_WRAPV (new_used, plensize, &new_used))             \
+              {                                                               \
+                retval = -2;                                                  \
+                goto out;                                                     \
+              }                                                               \
+            slen += plensize;                                                 \
+            bool malloced = ! __libc_use_alloca (new_used);                   \
+            if (__glibc_unlikely (malloced))                                  \
+              {                                                               \
+                newp = malloc (slen);                                         \
+                if (newp == NULL)                                             \
+                  {                                                           \
+                    retval = -2;                                              \
+                    goto out;                                                 \
+                  }                                                           \
+                any_malloced = true;                                          \
+              }                                                               \
+            else                                                              \
+              newp = alloca_account (slen, alloca_used);                      \
+            newp->next = NULL;                                                \
+            newp->malloced = malloced;                                        \
+            *((CHAR *) MEMPCPY (newp->str, startp, p - startp)) = L_('\0');   \
+            *lastp = newp;                                                    \
+            lastp = &newp->next
+            NEW_PATTERN;
+          }
+      }
+    else if (*p == L_('|'))
+      {
+        if (level == 0)
+          {
+            NEW_PATTERN;
+            startp = p + 1;
+          }
+      }
+  assert (list != NULL);
+  assert (p[-1] == L_(')'));
+#undef NEW_PATTERN
+
+  switch (opt)
+    {
+    case L_('*'):
+      if (FCT (p, string, string_end, no_leading_period, flags, NULL,
+               alloca_used) == 0)
+        goto success;
+      FALLTHROUGH;
+    case L_('+'):
+      do
+        {
+          for (rs = string; rs <= string_end; ++rs)
+            /* First match the prefix with the current pattern with the
+               current pattern.  */
+            if (FCT (list->str, string, rs, no_leading_period,
+                     flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD,
+                     NULL, alloca_used) == 0
+                /* This was successful.  Now match the rest with the rest
+                   of the pattern.  */
+                && (FCT (p, rs, string_end,
+                         rs == string
+                         ? no_leading_period
+                         : rs[-1] == '/' && NO_LEADING_PERIOD (flags),
+                         flags & FNM_FILE_NAME
+                         ? flags : flags & ~FNM_PERIOD, NULL, alloca_used) == 0
+                    /* This didn't work.  Try the whole pattern.  */
+                    || (rs != string
+                        && FCT (pattern - 1, rs, string_end,
+                                rs == string
+                                ? no_leading_period
+                                : rs[-1] == '/' && NO_LEADING_PERIOD (flags),
+                                flags & FNM_FILE_NAME
+                                ? flags : flags & ~FNM_PERIOD, NULL,
+                                alloca_used) == 0)))
+              /* It worked.  Signal success.  */
+              goto success;
+        }
+      while ((list = list->next) != NULL);
+
+      /* None of the patterns lead to a match.  */
+      retval = FNM_NOMATCH;
+      break;
+
+    case L_('?'):
+      if (FCT (p, string, string_end, no_leading_period, flags, NULL,
+               alloca_used) == 0)
+        goto success;
+      FALLTHROUGH;
+    case L_('@'):
+      do
+        /* I cannot believe it but 'strcat' is actually acceptable
+           here.  Match the entire string with the prefix from the
+           pattern list and the rest of the pattern following the
+           pattern list.  */
+        if (FCT (STRCAT (list->str, p), string, string_end,
+                 no_leading_period,
+                 flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD,
+                 NULL, alloca_used) == 0)
+          /* It worked.  Signal success.  */
+          goto success;
+      while ((list = list->next) != NULL);
+
+      /* None of the patterns lead to a match.  */
+      retval = FNM_NOMATCH;
+      break;
+
+    case L_('!'):
+      for (rs = string; rs <= string_end; ++rs)
+        {
+          struct patternlist *runp;
+
+          for (runp = list; runp != NULL; runp = runp->next)
+            if (FCT (runp->str, string, rs,  no_leading_period,
+                     flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD,
+                     NULL, alloca_used) == 0)
+              break;
+
+          /* If none of the patterns matched see whether the rest does.  */
+          if (runp == NULL
+              && (FCT (p, rs, string_end,
+                       rs == string
+                       ? no_leading_period
+                       : rs[-1] == '/' && NO_LEADING_PERIOD (flags),
+                       flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD,
+                       NULL, alloca_used) == 0))
+            /* This is successful.  */
+            goto success;
+        }
+
+      /* None of the patterns together with the rest of the pattern
+         lead to a match.  */
+      retval = FNM_NOMATCH;
+      break;
+
+    default:
+      assert (! "Invalid extended matching operator");
+      retval = -1;
+      break;
+    }
+
+ success:
+ out:
+  if (any_malloced)
+    while (list != NULL)
+      {
+        struct patternlist *old = list;
+        list = list->next;
+        if (old->malloced)
+          free (old);
+      }
+
+  return retval;
+}
+
+
+#undef FOLD
+#undef CHAR
+#undef UCHAR
+#undef INT
+#undef FCT
+#undef EXT
+#undef END
+#undef STRUCT
+#undef MEMPCPY
+#undef MEMCHR
+#undef STRLEN
+#undef STRCAT
+#undef L_
+#undef BTOWC
+#undef WIDE_CHAR_VERSION
+#undef FINDIDX
diff --git a/src/grep/lib/fopen.c b/src/grep/lib/fopen.c
new file mode 100644
index 0000000..cebcdac
--- /dev/null
+++ b/src/grep/lib/fopen.c
@@ -0,0 +1,230 @@
+/* Open a stream to a file.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+/* If the user's config.h happens to include <stdio.h>, let it include only
+   the system's <stdio.h> here, so that orig_fopen doesn't recurse to
+   rpl_fopen.  */
+#define _GL_ALREADY_INCLUDING_STDIO_H
+#include <config.h>
+
+/* Get the original definition of fopen.  It might be defined as a macro.  */
+#include <stdio.h>
+#undef _GL_ALREADY_INCLUDING_STDIO_H
+
+static FILE *
+orig_fopen (const char *filename, const char *mode)
+{
+  return fopen (filename, mode);
+}
+
+/* Specification.  */
+/* Write "stdio.h" here, not <stdio.h>, otherwise OSF/1 5.1 DTK cc eliminates
+   this include because of the preliminary #include <stdio.h> above.  */
+#include "stdio.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+FILE *
+rpl_fopen (const char *filename, const char *mode)
+{
+  int open_direction;
+  int open_flags;
+#if GNULIB_FOPEN_GNU
+  bool open_flags_gnu;
+# define BUF_SIZE 80
+  char fdopen_mode_buf[BUF_SIZE + 1];
+#endif
+
+#if defined _WIN32 && ! defined __CYGWIN__
+  if (strcmp (filename, "/dev/null") == 0)
+    filename = "NUL";
+#endif
+
+  /* Parse the mode.  */
+  open_direction = 0;
+  open_flags = 0;
+#if GNULIB_FOPEN_GNU
+  open_flags_gnu = false;
+#endif
+  {
+    const char *p = mode;
+#if GNULIB_FOPEN_GNU
+    char *q = fdopen_mode_buf;
+#endif
+
+    for (; *p != '\0'; p++)
+      {
+        switch (*p)
+          {
+          case 'r':
+            open_direction = O_RDONLY;
+#if GNULIB_FOPEN_GNU
+            if (q < fdopen_mode_buf + BUF_SIZE)
+              *q++ = *p;
+#endif
+            continue;
+          case 'w':
+            open_direction = O_WRONLY;
+            open_flags |= O_CREAT | O_TRUNC;
+#if GNULIB_FOPEN_GNU
+            if (q < fdopen_mode_buf + BUF_SIZE)
+              *q++ = *p;
+#endif
+            continue;
+          case 'a':
+            open_direction = O_WRONLY;
+            open_flags |= O_CREAT | O_APPEND;
+#if GNULIB_FOPEN_GNU
+            if (q < fdopen_mode_buf + BUF_SIZE)
+              *q++ = *p;
+#endif
+            continue;
+          case 'b':
+            /* While it is non-standard, O_BINARY is guaranteed by
+               gnulib <fcntl.h>.  We can also assume that orig_fopen
+               supports the 'b' flag.  */
+            open_flags |= O_BINARY;
+#if GNULIB_FOPEN_GNU
+            if (q < fdopen_mode_buf + BUF_SIZE)
+              *q++ = *p;
+#endif
+            continue;
+          case '+':
+            open_direction = O_RDWR;
+#if GNULIB_FOPEN_GNU
+            if (q < fdopen_mode_buf + BUF_SIZE)
+              *q++ = *p;
+#endif
+            continue;
+#if GNULIB_FOPEN_GNU
+          case 'x':
+            open_flags |= O_EXCL;
+            open_flags_gnu = true;
+            continue;
+          case 'e':
+            open_flags |= O_CLOEXEC;
+            open_flags_gnu = true;
+            continue;
+#endif
+          default:
+            break;
+          }
+#if GNULIB_FOPEN_GNU
+        /* The rest of the mode string can be a platform-dependent extension.
+           Copy it unmodified.  */
+        {
+          size_t len = strlen (p);
+          if (len > fdopen_mode_buf + BUF_SIZE - q)
+            len = fdopen_mode_buf + BUF_SIZE - q;
+          memcpy (q, p, len);
+          q += len;
+        }
+#endif
+        break;
+      }
+#if GNULIB_FOPEN_GNU
+    *q = '\0';
+#endif
+  }
+
+#if FOPEN_TRAILING_SLASH_BUG
+  /* Fail if the mode requires write access and the filename ends in a slash,
+     as POSIX says such a filename must name a directory
+     <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13>:
+       "A pathname that contains at least one non-<slash> character and that
+        ends with one or more trailing <slash> characters shall not be resolved
+        successfully unless the last pathname component before the trailing
+        <slash> characters names an existing directory"
+     If the named file already exists as a directory, then if a mode that
+     requires write access is specified, fopen() must fail because POSIX
+     <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html>
+     says that it fails with errno = EISDIR in this case.
+     If the named file does not exist or does not name a directory, then
+     fopen() must fail since the file does not contain a '.' directory.  */
+  {
+    size_t len = strlen (filename);
+    if (len > 0 && filename[len - 1] == '/')
+      {
+        int fd;
+        struct stat statbuf;
+        FILE *fp;
+
+        if (open_direction != O_RDONLY)
+          {
+            errno = EISDIR;
+            return NULL;
+          }
+
+        fd = open (filename, open_direction | open_flags,
+                   S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
+        if (fd < 0)
+          return NULL;
+
+        if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode))
+          {
+            close (fd);
+            errno = ENOTDIR;
+            return NULL;
+          }
+
+# if GNULIB_FOPEN_GNU
+        fp = fdopen (fd, fdopen_mode_buf);
+# else
+        fp = fdopen (fd, mode);
+# endif
+        if (fp == NULL)
+          {
+            int saved_errno = errno;
+            close (fd);
+            errno = saved_errno;
+          }
+        return fp;
+      }
+  }
+#endif
+
+#if GNULIB_FOPEN_GNU
+  if (open_flags_gnu)
+    {
+      int fd;
+      FILE *fp;
+
+      fd = open (filename, open_direction | open_flags,
+                 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
+      if (fd < 0)
+        return NULL;
+
+      fp = fdopen (fd, fdopen_mode_buf);
+      if (fp == NULL)
+        {
+          int saved_errno = errno;
+          close (fd);
+          errno = saved_errno;
+        }
+      return fp;
+    }
+#endif
+
+  return orig_fopen (filename, mode);
+}
diff --git a/src/grep/lib/fpending.c b/src/grep/lib/fpending.c
new file mode 100644
index 0000000..7c61f7e
--- /dev/null
+++ b/src/grep/lib/fpending.c
@@ -0,0 +1,63 @@
+/* fpending.c -- return the number of pending output bytes on a stream
+   Copyright (C) 2000, 2004, 2006-2007, 2009-2021 Free Software Foundation,
+   Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering. */
+
+#include <config.h>
+
+/* Specification.  */
+#include "fpending.h"
+
+#include "stdio-impl.h"
+
+/* This file is not used on systems that already have the __fpending function,
+   namely glibc >= 2.2, Solaris >= 7, UnixWare >= 7.1.4.MP4, Cygwin >= 1.7.34,
+   Android API >= 23.  */
+
+/* Return the number of pending (aka buffered, unflushed)
+   bytes on the stream, FP, that is open for writing.  */
+size_t
+__fpending (FILE *fp)
+{
+  /* Most systems provide FILE as a struct and the necessary bitmask in
+     <stdio.h>, because they need it for implementing getc() and putc() as
+     fast macros.  */
+#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
+  /* GNU libc, BeOS, Haiku, Linux libc5 */
+  return fp->_IO_write_ptr - fp->_IO_write_base;
+#elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin < 1.7.34, Minix 3, Android */
+  return fp->_p - fp->_bf._base;
+#elif defined __EMX__                /* emx+gcc */
+  return fp->_ptr - fp->_buffer;
+#elif defined __minix                /* Minix */
+  return fp_->_ptr - fp_->_buf;
+#elif defined _IOERR                 /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
+  return (fp_->_ptr ? fp_->_ptr - fp_->_base : 0);
+#elif defined __UCLIBC__             /* uClibc */
+  return (fp->__modeflags & __FLAG_WRITING ? fp->__bufpos - fp->__bufstart : 0);
+#elif defined __QNX__                /* QNX */
+  return (fp->_Mode & 0x2000 /*_MWRITE*/ ? fp->_Next - fp->_Buf : 0);
+#elif defined __MINT__               /* Atari FreeMiNT */
+  return fp->__bufp - fp->__buffer;
+#elif defined EPLAN9                 /* Plan9 */
+  return fp->wp - fp->buf;
+#else
+# error "Please port gnulib fpending.c to your platform!"
+  return 1;
+#endif
+}
diff --git a/src/grep/lib/fpending.h b/src/grep/lib/fpending.h
new file mode 100644
index 0000000..016341b
--- /dev/null
+++ b/src/grep/lib/fpending.h
@@ -0,0 +1,29 @@
+/* Declare __fpending.
+
+   Copyright (C) 2000, 2003, 2005-2006, 2009-2021 Free Software Foundation,
+   Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+   Written by Jim Meyering.  */
+
+#include <stddef.h>
+#include <stdio.h>
+#if HAVE_STDIO_EXT_H
+# include <stdio_ext.h>
+#endif
+
+#if !HAVE_DECL___FPENDING
+size_t __fpending (FILE *) _GL_ATTRIBUTE_PURE;
+#endif
diff --git a/src/grep/lib/free.c b/src/grep/lib/free.c
new file mode 100644
index 0000000..780f03d
--- /dev/null
+++ b/src/grep/lib/free.c
@@ -0,0 +1,53 @@
+/* Make free() preserve errno.
+
+   Copyright (C) 2003, 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Paul Eggert */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+/* A function definition is only needed if HAVE_FREE_POSIX is not defined.  */
+#if !HAVE_FREE_POSIX
+
+# include <errno.h>
+
+void
+rpl_free (void *p)
+# undef free
+{
+# if defined __GNUC__ && !defined __clang__
+  /* An invalid GCC optimization
+     <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98396>
+     would optimize away the assignments in the code below, when link-time
+     optimization (LTO) is enabled.  Make the code more complicated, so that
+     GCC does not grok how to optimize it.  */
+  int err[2];
+  err[0] = errno;
+  err[1] = errno;
+  errno = 0;
+  free (p);
+  errno = err[errno == 0];
+# else
+  int err = errno;
+  free (p);
+  errno = err;
+# endif
+}
+
+#endif
diff --git a/src/grep/lib/fstat.c b/src/grep/lib/fstat.c
new file mode 100644
index 0000000..512c688
--- /dev/null
+++ b/src/grep/lib/fstat.c
@@ -0,0 +1,94 @@
+/* fstat() replacement.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* If the user's config.h happens to include <sys/stat.h>, let it include only
+   the system's <sys/stat.h> here, so that orig_fstat doesn't recurse to
+   rpl_fstat.  */
+#define __need_system_sys_stat_h
+#include <config.h>
+
+/* Get the original definition of fstat.  It might be defined as a macro.  */
+#include <sys/types.h>
+#include <sys/stat.h>
+#undef __need_system_sys_stat_h
+
+#if defined _WIN32 && ! defined __CYGWIN__
+# define WINDOWS_NATIVE
+#endif
+
+#if !defined WINDOWS_NATIVE
+
+static int
+orig_fstat (int fd, struct stat *buf)
+{
+  return fstat (fd, buf);
+}
+
+#endif
+
+/* Specification.  */
+#ifdef __osf__
+/* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc
+   eliminates this include because of the preliminary #include <sys/stat.h>
+   above.  */
+# include "sys/stat.h"
+#else
+# include <sys/stat.h>
+#endif
+
+#include "stat-time.h"
+
+#include <errno.h>
+#include <unistd.h>
+#ifdef WINDOWS_NATIVE
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+# include "stat-w32.h"
+#endif
+
+int
+rpl_fstat (int fd, struct stat *buf)
+{
+#if REPLACE_FCHDIR && REPLACE_OPEN_DIRECTORY
+  /* Handle the case when rpl_open() used a dummy file descriptor to work
+     around an open() that can't normally visit directories.  */
+  const char *name = _gl_directory_name (fd);
+  if (name != NULL)
+    return stat (name, buf);
+#endif
+
+#ifdef WINDOWS_NATIVE
+  /* Fill the fields ourselves, because the original fstat function returns
+     values for st_atime, st_mtime, st_ctime that depend on the current time
+     zone.  See
+     <https://lists.gnu.org/r/bug-gnulib/2017-04/msg00134.html>  */
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+
+  if (h == INVALID_HANDLE_VALUE)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  return _gl_fstat_by_handle (h, NULL, buf);
+#else
+  return stat_time_normalize (orig_fstat (fd, buf), buf);
+#endif
+}
diff --git a/src/grep/lib/fstatat.c b/src/grep/lib/fstatat.c
new file mode 100644
index 0000000..640a375
--- /dev/null
+++ b/src/grep/lib/fstatat.c
@@ -0,0 +1,148 @@
+/* Work around an fstatat bug on Solaris 9.
+
+   Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert and Jim Meyering.  */
+
+/* If the user's config.h happens to include <sys/stat.h>, let it include only
+   the system's <sys/stat.h> here, so that orig_fstatat doesn't recurse to
+   rpl_fstatat.  */
+#define __need_system_sys_stat_h
+#include <config.h>
+
+/* Get the original definition of fstatat.  It might be defined as a macro.  */
+#include <sys/types.h>
+#include <sys/stat.h>
+#undef __need_system_sys_stat_h
+
+#if HAVE_FSTATAT && HAVE_WORKING_FSTATAT_ZERO_FLAG
+static int
+orig_fstatat (int fd, char const *filename, struct stat *buf, int flags)
+{
+  return fstatat (fd, filename, buf, flags);
+}
+#endif
+
+#ifdef __osf__
+/* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc
+   eliminates this include because of the preliminary #include <sys/stat.h>
+   above.  */
+# include "sys/stat.h"
+#else
+# include <sys/stat.h>
+#endif
+
+#include "stat-time.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if HAVE_FSTATAT && HAVE_WORKING_FSTATAT_ZERO_FLAG
+
+# ifndef LSTAT_FOLLOWS_SLASHED_SYMLINK
+#  define LSTAT_FOLLOWS_SLASHED_SYMLINK 0
+# endif
+
+static int
+normal_fstatat (int fd, char const *file, struct stat *st, int flag)
+{
+  return stat_time_normalize (orig_fstatat (fd, file, st, flag), st);
+}
+
+/* fstatat should always follow symbolic links that end in /, but on
+   Solaris 9 it doesn't if AT_SYMLINK_NOFOLLOW is specified.
+   Likewise, trailing slash on a non-directory should be an error.
+   These are the same problems that lstat.c and stat.c address, so
+   solve it in a similar way.
+
+   AIX 7.1 fstatat (AT_FDCWD, ..., 0) always fails, which is a bug.
+   Work around this bug if FSTATAT_AT_FDCWD_0_BROKEN is nonzero.  */
+
+int
+rpl_fstatat (int fd, char const *file, struct stat *st, int flag)
+{
+  int result = normal_fstatat (fd, file, st, flag);
+  size_t len;
+
+  if (LSTAT_FOLLOWS_SLASHED_SYMLINK || result != 0)
+    return result;
+  len = strlen (file);
+  if (flag & AT_SYMLINK_NOFOLLOW)
+    {
+      /* Fix lstat behavior.  */
+      if (file[len - 1] != '/' || S_ISDIR (st->st_mode))
+        return 0;
+      if (!S_ISLNK (st->st_mode))
+        {
+          errno = ENOTDIR;
+          return -1;
+        }
+      result = normal_fstatat (fd, file, st, flag & ~AT_SYMLINK_NOFOLLOW);
+    }
+  /* Fix stat behavior.  */
+  if (result == 0 && !S_ISDIR (st->st_mode) && file[len - 1] == '/')
+    {
+      errno = ENOTDIR;
+      return -1;
+    }
+  return result;
+}
+
+#else /* ! (HAVE_FSTATAT && HAVE_WORKING_FSTATAT_ZERO_FLAG) */
+
+/* On mingw, the gnulib <sys/stat.h> defines 'stat' as a function-like
+   macro; but using it in AT_FUNC_F2 causes compilation failure
+   because the preprocessor sees a use of a macro that requires two
+   arguments but is only given one.  Hence, we need an inline
+   forwarder to get past the preprocessor.  */
+static int
+stat_func (char const *name, struct stat *st)
+{
+  return stat (name, st);
+}
+
+/* Likewise, if there is no native 'lstat', then the gnulib
+   <sys/stat.h> defined it as stat, which also needs adjustment.  */
+# if !HAVE_LSTAT
+#  undef lstat
+#  define lstat stat_func
+# endif
+
+/* Replacement for Solaris' function by the same name.
+   <https://www.google.com/search?q=fstatat+site:docs.oracle.com>
+   First, try to simulate it via l?stat ("/proc/self/fd/FD/FILE").
+   Failing that, simulate it via save_cwd/fchdir/(stat|lstat)/restore_cwd.
+   If either the save_cwd or the restore_cwd fails (relatively unlikely),
+   then give a diagnostic and exit nonzero.
+   Otherwise, this function works just like Solaris' fstatat.  */
+
+# define AT_FUNC_NAME fstatat
+# define AT_FUNC_F1 lstat
+# define AT_FUNC_F2 stat_func
+# define AT_FUNC_USE_F1_COND AT_SYMLINK_NOFOLLOW
+# define AT_FUNC_POST_FILE_PARAM_DECLS , struct stat *st, int flag
+# define AT_FUNC_POST_FILE_ARGS        , st
+# include "at-func.c"
+# undef AT_FUNC_NAME
+# undef AT_FUNC_F1
+# undef AT_FUNC_F2
+# undef AT_FUNC_USE_F1_COND
+# undef AT_FUNC_POST_FILE_PARAM_DECLS
+# undef AT_FUNC_POST_FILE_ARGS
+
+#endif /* !HAVE_FSTATAT */
diff --git a/src/grep/lib/fts-cycle.c b/src/grep/lib/fts-cycle.c
new file mode 100644
index 0000000..5e04b54
--- /dev/null
+++ b/src/grep/lib/fts-cycle.c
@@ -0,0 +1,160 @@
+/* Detect cycles in file tree walks.
+
+   Copyright (C) 2003-2006, 2009-2021 Free Software Foundation, Inc.
+
+   Written by Jim Meyering.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "cycle-check.h"
+#include "hash.h"
+
+/* Use each of these to map a device/inode pair to an FTSENT.  */
+struct Active_dir
+{
+  dev_t dev;
+  ino_t ino;
+  FTSENT *fts_ent;
+};
+
+static bool
+AD_compare (void const *x, void const *y)
+{
+  struct Active_dir const *ax = x;
+  struct Active_dir const *ay = y;
+  return ax->ino == ay->ino
+      && ax->dev == ay->dev;
+}
+
+static size_t
+AD_hash (void const *x, size_t table_size)
+{
+  struct Active_dir const *ax = x;
+  return (uintmax_t) ax->ino % table_size;
+}
+
+/* Set up the cycle-detection machinery.  */
+
+static bool
+setup_dir (FTS *fts)
+{
+  if (fts->fts_options & (FTS_TIGHT_CYCLE_CHECK | FTS_LOGICAL))
+    {
+      enum { HT_INITIAL_SIZE = 31 };
+      fts->fts_cycle.ht = hash_initialize (HT_INITIAL_SIZE, NULL, AD_hash,
+                                           AD_compare, free);
+      if (! fts->fts_cycle.ht)
+        return false;
+    }
+  else
+    {
+      fts->fts_cycle.state = malloc (sizeof *fts->fts_cycle.state);
+      if (! fts->fts_cycle.state)
+        return false;
+      cycle_check_init (fts->fts_cycle.state);
+    }
+
+  return true;
+}
+
+/* Enter a directory during a file tree walk.  */
+
+static bool
+enter_dir (FTS *fts, FTSENT *ent)
+{
+  if (fts->fts_options & (FTS_TIGHT_CYCLE_CHECK | FTS_LOGICAL))
+    {
+      struct stat const *st = ent->fts_statp;
+      struct Active_dir *ad = malloc (sizeof *ad);
+      struct Active_dir *ad_from_table;
+
+      if (!ad)
+        return false;
+
+      ad->dev = st->st_dev;
+      ad->ino = st->st_ino;
+      ad->fts_ent = ent;
+
+      /* See if we've already encountered this directory.
+         This can happen when following symlinks as well as
+         with a corrupted directory hierarchy. */
+      ad_from_table = hash_insert (fts->fts_cycle.ht, ad);
+
+      if (ad_from_table != ad)
+        {
+          free (ad);
+          if (!ad_from_table)
+            return false;
+
+          /* There was an entry with matching dev/inode already in the table.
+             Record the fact that we've found a cycle.  */
+          ent->fts_cycle = ad_from_table->fts_ent;
+          ent->fts_info = FTS_DC;
+        }
+    }
+  else
+    {
+      if (cycle_check (fts->fts_cycle.state, ent->fts_statp))
+        {
+          /* FIXME: setting fts_cycle like this isn't proper.
+             To do what the documentation requires, we'd have to
+             go around the cycle again and find the right entry.
+             But no callers in coreutils use the fts_cycle member. */
+          ent->fts_cycle = ent;
+          ent->fts_info = FTS_DC;
+        }
+    }
+
+  return true;
+}
+
+/* Leave a directory during a file tree walk.  */
+
+static void
+leave_dir (FTS *fts, FTSENT *ent)
+{
+  struct stat const *st = ent->fts_statp;
+  if (fts->fts_options & (FTS_TIGHT_CYCLE_CHECK | FTS_LOGICAL))
+    {
+      struct Active_dir obj;
+      void *found;
+      obj.dev = st->st_dev;
+      obj.ino = st->st_ino;
+      found = hash_remove (fts->fts_cycle.ht, &obj);
+      if (!found)
+        abort ();
+      free (found);
+    }
+  else
+    {
+      FTSENT *parent = ent->fts_parent;
+      if (parent != NULL && 0 <= parent->fts_level)
+        CYCLE_CHECK_REFLECT_CHDIR_UP (fts->fts_cycle.state,
+                                      *(parent->fts_statp), *st);
+    }
+}
+
+/* Free any memory used for cycle detection.  */
+
+static void
+free_dir (FTS *sp)
+{
+  if (sp->fts_options & (FTS_TIGHT_CYCLE_CHECK | FTS_LOGICAL))
+    {
+      if (sp->fts_cycle.ht)
+        hash_free (sp->fts_cycle.ht);
+    }
+  else
+    free (sp->fts_cycle.state);
+}
diff --git a/src/grep/lib/fts.c b/src/grep/lib/fts.c
new file mode 100644
index 0000000..e6603f4
--- /dev/null
+++ b/src/grep/lib/fts.c
@@ -0,0 +1,2085 @@
+/* Traverse a file hierarchy.
+
+   Copyright (C) 2004-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#if defined LIBC_SCCS && !defined GCC_LINT && !defined lint
+static char sccsid[] = "@(#)fts.c       8.6 (Berkeley) 8/14/94";
+#endif
+
+#include "fts_.h"
+
+#if HAVE_SYS_PARAM_H || defined _LIBC
+# include <sys/param.h>
+#endif
+#ifdef _LIBC
+# include <include/sys/stat.h>
+#else
+# include <sys/stat.h>
+#endif
+#include <fcntl.h>
+#include <errno.h>
+#include <stdalign.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#if ! _LIBC
+# include "attribute.h"
+# include "fcntl--.h"
+# include "flexmember.h"
+# include "openat.h"
+# include "opendirat.h"
+# include "same-inode.h"
+#endif
+
+#include <dirent.h>
+#ifndef _D_EXACT_NAMLEN
+# define _D_EXACT_NAMLEN(dirent) strlen ((dirent)->d_name)
+#endif
+
+#if HAVE_STRUCT_DIRENT_D_TYPE
+/* True if the type of the directory entry D is known.  */
+# define DT_IS_KNOWN(d) ((d)->d_type != DT_UNKNOWN)
+/* True if the type of the directory entry D must be T.  */
+# define DT_MUST_BE(d, t) ((d)->d_type == (t))
+# define D_TYPE(d) ((d)->d_type)
+#else
+# define DT_IS_KNOWN(d) false
+# define DT_MUST_BE(d, t) false
+# define D_TYPE(d) DT_UNKNOWN
+
+# undef DT_UNKNOWN
+# define DT_UNKNOWN 0
+
+/* Any nonzero values will do here, so long as they're distinct.
+   Undef any existing macros out of the way.  */
+# undef DT_BLK
+# undef DT_CHR
+# undef DT_DIR
+# undef DT_FIFO
+# undef DT_LNK
+# undef DT_REG
+# undef DT_SOCK
+# define DT_BLK 1
+# define DT_CHR 2
+# define DT_DIR 3
+# define DT_FIFO 4
+# define DT_LNK 5
+# define DT_REG 6
+# define DT_SOCK 7
+#endif
+
+#ifndef S_IFLNK
+# define S_IFLNK 0
+#endif
+#ifndef S_IFSOCK
+# define S_IFSOCK 0
+#endif
+
+enum
+{
+  NOT_AN_INODE_NUMBER = 0
+};
+
+#ifdef D_INO_IN_DIRENT
+# define D_INO(dp) (dp)->d_ino
+#else
+/* Some systems don't have inodes, so fake them to avoid lots of ifdefs.  */
+# define D_INO(dp) NOT_AN_INODE_NUMBER
+#endif
+
+/* If possible (see max_entries, below), read no more than this many directory
+   entries at a time.  Without this limit (i.e., when using non-NULL
+   fts_compar), processing a directory with 4,000,000 entries requires ~1GiB
+   of memory, and handling 64M entries would require 16GiB of memory.  */
+#ifndef FTS_MAX_READDIR_ENTRIES
+# define FTS_MAX_READDIR_ENTRIES 100000
+#endif
+
+/* If there are more than this many entries in a directory,
+   and the conditions mentioned below are satisfied, then sort
+   the entries on inode number before any further processing.  */
+#ifndef FTS_INODE_SORT_DIR_ENTRIES_THRESHOLD
+# define FTS_INODE_SORT_DIR_ENTRIES_THRESHOLD 10000
+#endif
+
+enum
+{
+  _FTS_INODE_SORT_DIR_ENTRIES_THRESHOLD = FTS_INODE_SORT_DIR_ENTRIES_THRESHOLD
+};
+
+enum Fts_stat
+{
+  FTS_NO_STAT_REQUIRED = 1,
+  FTS_STAT_REQUIRED = 2
+};
+
+#ifdef _LIBC
+# undef close
+# define close __close
+# undef closedir
+# define closedir __closedir
+# undef fchdir
+# define fchdir __fchdir
+# undef open
+# define open __open
+# undef readdir
+# define readdir __readdir
+#else
+# undef internal_function
+# define internal_function /* empty */
+#endif
+
+#ifndef __set_errno
+# define __set_errno(Val) errno = (Val)
+#endif
+
+/* If this host provides the openat function, then we can avoid
+   attempting to open "." in some initialization code below.  */
+#ifdef HAVE_OPENAT
+# define HAVE_OPENAT_SUPPORT 1
+#else
+# define HAVE_OPENAT_SUPPORT 0
+#endif
+
+#ifdef NDEBUG
+# define fts_assert(expr) ((void) (0 && (expr)))
+#else
+# define fts_assert(expr)       \
+    do                          \
+      {                         \
+        if (!(expr))            \
+          abort ();             \
+      }                         \
+    while (false)
+#endif
+
+#ifdef _LIBC
+# if __GNUC__ >= 7
+#  define FALLTHROUGH __attribute__ ((__fallthrough__))
+# else
+#  define FALLTHROUGH ((void) 0)
+# endif
+#endif
+
+static FTSENT   *fts_alloc (FTS *, const char *, size_t) internal_function;
+static FTSENT   *fts_build (FTS *, int) internal_function;
+static void      fts_lfree (FTSENT *) internal_function;
+static void      fts_load (FTS *, FTSENT *) internal_function;
+static size_t    fts_maxarglen (char * const *) internal_function;
+static void      fts_padjust (FTS *, FTSENT *) internal_function;
+static bool      fts_palloc (FTS *, size_t) internal_function;
+static FTSENT   *fts_sort (FTS *, FTSENT *, size_t) internal_function;
+static unsigned short int fts_stat (FTS *, FTSENT *, bool) internal_function;
+static int      fts_safe_changedir (FTS *, FTSENT *, int, const char *)
+     internal_function;
+
+#include "fts-cycle.c"
+
+#ifndef MAX
+# define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
+
+#ifndef SIZE_MAX
+# define SIZE_MAX ((size_t) -1)
+#endif
+
+#define ISDOT(a)        (a[0] == '.' && (!a[1] || (a[1] == '.' && !a[2])))
+#define STREQ(a, b)     (strcmp (a, b) == 0)
+
+#define CLR(opt)        (sp->fts_options &= ~(opt))
+#define ISSET(opt)      (sp->fts_options & (opt))
+#define SET(opt)        (sp->fts_options |= (opt))
+
+/* FIXME: FTS_NOCHDIR is now misnamed.
+   Call it FTS_USE_FULL_RELATIVE_FILE_NAMES instead. */
+#define FCHDIR(sp, fd)                                  \
+  (!ISSET(FTS_NOCHDIR) && (ISSET(FTS_CWDFD)             \
+                           ? (cwd_advance_fd ((sp), (fd), true), 0) \
+                           : fchdir (fd)))
+
+
+/* fts_build flags */
+/* FIXME: make this an enum */
+#define BCHILD          1               /* fts_children */
+#define BNAMES          2               /* fts_children, names only */
+#define BREAD           3               /* fts_read */
+
+#if FTS_DEBUG
+# include <inttypes.h>
+# include <stdint.h>
+# include <stdio.h>
+# include "getcwdat.h"
+bool fts_debug = false;
+# define Dprintf(x) do { if (fts_debug) printf x; } while (false)
+#else
+# define Dprintf(x)
+# define fd_ring_check(x)
+# define fd_ring_print(a, b, c)
+#endif
+
+#define LEAVE_DIR(Fts, Ent, Tag)                                \
+  do                                                            \
+    {                                                           \
+      Dprintf (("  %s-leaving: %s\n", Tag, (Ent)->fts_path));   \
+      leave_dir (Fts, Ent);                                     \
+      fd_ring_check (Fts);                                      \
+    }                                                           \
+  while (false)
+
+static void
+fd_ring_clear (I_ring *fd_ring)
+{
+  while ( ! i_ring_empty (fd_ring))
+    {
+      int fd = i_ring_pop (fd_ring);
+      if (0 <= fd)
+        close (fd);
+    }
+}
+
+/* Overload the fts_statp->st_size member (otherwise unused, when
+   fts_info is FTS_NSOK) to indicate whether fts_read should stat
+   this entry or not.  */
+static void
+fts_set_stat_required (FTSENT *p, bool required)
+{
+  fts_assert (p->fts_info == FTS_NSOK);
+  p->fts_statp->st_size = (required
+                           ? FTS_STAT_REQUIRED
+                           : FTS_NO_STAT_REQUIRED);
+}
+
+/* Virtual fchdir.  Advance SP's working directory file descriptor,
+   SP->fts_cwd_fd, to FD, and push the previous value onto the fd_ring.
+   CHDIR_DOWN_ONE is true if FD corresponds to an entry in the directory
+   open on sp->fts_cwd_fd; i.e., to move the working directory one level
+   down.  */
+static void
+internal_function
+cwd_advance_fd (FTS *sp, int fd, bool chdir_down_one)
+{
+  int old = sp->fts_cwd_fd;
+  fts_assert (old != fd || old == AT_FDCWD);
+
+  if (chdir_down_one)
+    {
+      /* Push "old" onto the ring.
+         If the displaced file descriptor is non-negative, close it.  */
+      int prev_fd_in_slot = i_ring_push (&sp->fts_fd_ring, old);
+      fd_ring_print (sp, stderr, "post-push");
+      if (0 <= prev_fd_in_slot)
+        close (prev_fd_in_slot); /* ignore any close failure */
+    }
+  else if ( ! ISSET (FTS_NOCHDIR))
+    {
+      if (0 <= old)
+        close (old); /* ignore any close failure */
+    }
+
+  sp->fts_cwd_fd = fd;
+}
+
+/* Restore the initial, pre-traversal, "working directory".
+   In FTS_CWDFD mode, we merely call cwd_advance_fd, otherwise,
+   we may actually change the working directory.
+   Return 0 upon success. Upon failure, set errno and return nonzero.  */
+static int
+restore_initial_cwd (FTS *sp)
+{
+  int fail = FCHDIR (sp, ISSET (FTS_CWDFD) ? AT_FDCWD : sp->fts_rfd);
+  fd_ring_clear (&(sp->fts_fd_ring));
+  return fail;
+}
+
+/* Open the directory DIR if possible, and return a file
+   descriptor.  Return -1 and set errno on failure.  It doesn't matter
+   whether the file descriptor has read or write access.  */
+
+static int
+internal_function
+diropen (FTS const *sp, char const *dir)
+{
+  int open_flags = (O_SEARCH | O_CLOEXEC | O_DIRECTORY | O_NOCTTY | O_NONBLOCK
+                    | (ISSET (FTS_PHYSICAL) ? O_NOFOLLOW : 0));
+
+  int fd = (ISSET (FTS_CWDFD)
+            ? openat (sp->fts_cwd_fd, dir, open_flags)
+            : open (dir, open_flags));
+  return fd;
+}
+
+FTS *
+fts_open (char * const *argv,
+          register int options,
+          int (*compar) (FTSENT const **, FTSENT const **))
+{
+        register FTS *sp;
+        register FTSENT *p, *root;
+        register size_t nitems;
+        FTSENT *parent = NULL;
+        FTSENT *tmp = NULL;     /* pacify gcc */
+        bool defer_stat;
+
+        /* Options check. */
+        if (options & ~FTS_OPTIONMASK) {
+                __set_errno (EINVAL);
+                return (NULL);
+        }
+        if ((options & FTS_NOCHDIR) && (options & FTS_CWDFD)) {
+                __set_errno (EINVAL);
+                return (NULL);
+        }
+        if ( ! (options & (FTS_LOGICAL | FTS_PHYSICAL))) {
+                __set_errno (EINVAL);
+                return (NULL);
+        }
+
+        /* Allocate/initialize the stream */
+        sp = calloc (1, sizeof *sp);
+        if (sp == NULL)
+                return (NULL);
+        sp->fts_compar = compar;
+        sp->fts_options = options;
+
+        /* Logical walks turn on NOCHDIR; symbolic links are too hard. */
+        if (ISSET(FTS_LOGICAL)) {
+                SET(FTS_NOCHDIR);
+                CLR(FTS_CWDFD);
+        }
+
+        /* Initialize fts_cwd_fd.  */
+        sp->fts_cwd_fd = AT_FDCWD;
+        if ( ISSET(FTS_CWDFD) && ! HAVE_OPENAT_SUPPORT)
+          {
+            /* While it isn't technically necessary to open "." this
+               early, doing it here saves us the trouble of ensuring
+               later (where it'd be messier) that "." can in fact
+               be opened.  If not, revert to FTS_NOCHDIR mode.  */
+            int fd = open (".", O_SEARCH | O_CLOEXEC);
+            if (fd < 0)
+              {
+                /* Even if "." is unreadable, don't revert to FTS_NOCHDIR mode
+                   on systems like Linux+PROC_FS, where our openat emulation
+                   is good enough.  Note: on a system that emulates
+                   openat via /proc, this technique can still fail, but
+                   only in extreme conditions, e.g., when the working
+                   directory cannot be saved (i.e. save_cwd fails) --
+                   and that happens on Linux only when "." is unreadable
+                   and the CWD would be longer than PATH_MAX.
+                   FIXME: once Linux kernel openat support is well established,
+                   replace the above open call and this entire if/else block
+                   with the body of the if-block below.  */
+                if ( openat_needs_fchdir ())
+                  {
+                    SET(FTS_NOCHDIR);
+                    CLR(FTS_CWDFD);
+                  }
+              }
+            else
+              {
+                close (fd);
+              }
+          }
+
+        /*
+         * Start out with 1K of file name space, and enough, in any case,
+         * to hold the user's file names.
+         */
+#ifndef MAXPATHLEN
+# define MAXPATHLEN 1024
+#endif
+        {
+          size_t maxarglen = fts_maxarglen(argv);
+          if (! fts_palloc(sp, MAX(maxarglen, MAXPATHLEN)))
+                  goto mem1;
+        }
+
+        /* Allocate/initialize root's parent. */
+        if (*argv != NULL) {
+                if ((parent = fts_alloc(sp, "", 0)) == NULL)
+                        goto mem2;
+                parent->fts_level = FTS_ROOTPARENTLEVEL;
+          }
+
+        /* The classic fts implementation would call fts_stat with
+           a new entry for each iteration of the loop below.
+           If the comparison function is not specified or if the
+           FTS_DEFER_STAT option is in effect, don't stat any entry
+           in this loop.  This is an attempt to minimize the interval
+           between the initial stat/lstat/fstatat and the point at which
+           a directory argument is first opened.  This matters for any
+           directory command line argument that resides on a file system
+           without genuine i-nodes.  If you specify FTS_DEFER_STAT along
+           with a comparison function, that function must not access any
+           data via the fts_statp pointer.  */
+        defer_stat = (compar == NULL || ISSET(FTS_DEFER_STAT));
+
+        /* Allocate/initialize root(s). */
+        for (root = NULL, nitems = 0; *argv != NULL; ++argv, ++nitems) {
+                /* *Do* allow zero-length file names. */
+                size_t len = strlen(*argv);
+
+                if ( ! (options & FTS_VERBATIM))
+                  {
+                    /* If there are two or more trailing slashes, trim all but one,
+                       but don't change "//" to "/", and do map "///" to "/".  */
+                    char const *v = *argv;
+                    if (2 < len && v[len - 1] == '/')
+                      while (1 < len && v[len - 2] == '/')
+                        --len;
+                  }
+
+                if ((p = fts_alloc(sp, *argv, len)) == NULL)
+                        goto mem3;
+                p->fts_level = FTS_ROOTLEVEL;
+                p->fts_parent = parent;
+                p->fts_accpath = p->fts_name;
+                /* Even when defer_stat is true, be sure to stat the first
+                   command line argument, since fts_read (at least with
+                   FTS_XDEV) requires that.  */
+                if (defer_stat && root != NULL) {
+                        p->fts_info = FTS_NSOK;
+                        fts_set_stat_required(p, true);
+                } else {
+                        p->fts_info = fts_stat(sp, p, false);
+                }
+
+                /*
+                 * If comparison routine supplied, traverse in sorted
+                 * order; otherwise traverse in the order specified.
+                 */
+                if (compar) {
+                        p->fts_link = root;
+                        root = p;
+                } else {
+                        p->fts_link = NULL;
+                        if (root == NULL)
+                                tmp = root = p;
+                        else {
+                                tmp->fts_link = p;
+                                tmp = p;
+                        }
+                }
+        }
+        if (compar && nitems > 1)
+                root = fts_sort(sp, root, nitems);
+
+        /*
+         * Allocate a dummy pointer and make fts_read think that we've just
+         * finished the node before the root(s); set p->fts_info to FTS_INIT
+         * so that everything about the "current" node is ignored.
+         */
+        if ((sp->fts_cur = fts_alloc(sp, "", 0)) == NULL)
+                goto mem3;
+        sp->fts_cur->fts_link = root;
+        sp->fts_cur->fts_info = FTS_INIT;
+        sp->fts_cur->fts_level = 1;
+        if (! setup_dir (sp))
+                goto mem3;
+
+        /*
+         * If using chdir(2), grab a file descriptor pointing to dot to ensure
+         * that we can get back here; this could be avoided for some file names,
+         * but almost certainly not worth the effort.  Slashes, symbolic links,
+         * and ".." are all fairly nasty problems.  Note, if we can't get the
+         * descriptor we run anyway, just more slowly.
+         */
+        if (!ISSET(FTS_NOCHDIR) && !ISSET(FTS_CWDFD)
+            && (sp->fts_rfd = diropen (sp, ".")) < 0)
+                SET(FTS_NOCHDIR);
+
+        i_ring_init (&sp->fts_fd_ring, -1);
+        return (sp);
+
+mem3:   fts_lfree(root);
+        free(parent);
+mem2:   free(sp->fts_path);
+mem1:   free(sp);
+        return (NULL);
+}
+
+static void
+internal_function
+fts_load (FTS *sp, register FTSENT *p)
+{
+        register size_t len;
+        register char *cp;
+
+        /*
+         * Load the stream structure for the next traversal.  Since we don't
+         * actually enter the directory until after the preorder visit, set
+         * the fts_accpath field specially so the chdir gets done to the right
+         * place and the user can access the first node.  From fts_open it's
+         * known that the file name will fit.
+         */
+        len = p->fts_pathlen = p->fts_namelen;
+        memmove(sp->fts_path, p->fts_name, len + 1);
+        if ((cp = strrchr(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) {
+                len = strlen(++cp);
+                memmove(p->fts_name, cp, len + 1);
+                p->fts_namelen = len;
+        }
+        p->fts_accpath = p->fts_path = sp->fts_path;
+}
+
+int
+fts_close (FTS *sp)
+{
+        register FTSENT *freep, *p;
+        int saved_errno = 0;
+
+        /*
+         * This still works if we haven't read anything -- the dummy structure
+         * points to the root list, so we step through to the end of the root
+         * list which has a valid parent pointer.
+         */
+        if (sp->fts_cur) {
+                for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
+                        freep = p;
+                        p = p->fts_link != NULL ? p->fts_link : p->fts_parent;
+                        free(freep);
+                }
+                free(p);
+        }
+
+        /* Free up child linked list, sort array, file name buffer. */
+        if (sp->fts_child)
+                fts_lfree(sp->fts_child);
+        free(sp->fts_array);
+        free(sp->fts_path);
+
+        if (ISSET(FTS_CWDFD))
+          {
+            if (0 <= sp->fts_cwd_fd)
+              if (close (sp->fts_cwd_fd))
+                saved_errno = errno;
+          }
+        else if (!ISSET(FTS_NOCHDIR))
+          {
+            /* Return to original directory, save errno if necessary. */
+            if (fchdir(sp->fts_rfd))
+              saved_errno = errno;
+
+            /* If close fails, record errno only if saved_errno is zero,
+               so that we report the probably-more-meaningful fchdir errno.  */
+            if (close (sp->fts_rfd))
+              if (saved_errno == 0)
+                saved_errno = errno;
+          }
+
+        fd_ring_clear (&sp->fts_fd_ring);
+
+        if (sp->fts_leaf_optimization_works_ht)
+          hash_free (sp->fts_leaf_optimization_works_ht);
+
+        free_dir (sp);
+
+        /* Free up the stream pointer. */
+        free(sp);
+
+        /* Set errno and return. */
+        if (saved_errno) {
+                __set_errno (saved_errno);
+                return (-1);
+        }
+
+        return (0);
+}
+
+/* Minimum link count of a traditional Unix directory.  When leaf
+   optimization is OK and a directory's st_nlink == MIN_DIR_NLINK,
+   then the directory has no subdirectories.  */
+enum { MIN_DIR_NLINK = 2 };
+
+/* Whether leaf optimization is OK for a directory.  */
+enum leaf_optimization
+  {
+    /* st_nlink is not reliable for this directory's subdirectories.  */
+    NO_LEAF_OPTIMIZATION,
+
+    /* st_nlink == 2 means the directory lacks subdirectories.  */
+    OK_LEAF_OPTIMIZATION
+  };
+
+#if (defined __linux__ || defined __ANDROID__) \
+  && HAVE_SYS_VFS_H && HAVE_FSTATFS && HAVE_STRUCT_STATFS_F_TYPE
+
+# include <sys/vfs.h>
+
+/* Linux-specific constants from coreutils' src/fs.h */
+# define S_MAGIC_AFS 0x5346414F
+# define S_MAGIC_CIFS 0xFF534D42
+# define S_MAGIC_NFS 0x6969
+# define S_MAGIC_PROC 0x9FA0
+# define S_MAGIC_TMPFS 0x1021994
+
+# ifdef HAVE___FSWORD_T
+typedef __fsword_t fsword;
+# else
+typedef long int fsword;
+# endif
+
+/* Map a stat.st_dev number to a file system type number f_ftype.  */
+struct dev_type
+{
+  dev_t st_dev;
+  fsword f_type;
+};
+
+/* Use a tiny initial size.  If a traversal encounters more than
+   a few devices, the cost of growing/rehashing this table will be
+   rendered negligible by the number of inodes processed.  */
+enum { DEV_TYPE_HT_INITIAL_SIZE = 13 };
+
+static size_t
+dev_type_hash (void const *x, size_t table_size)
+{
+  struct dev_type const *ax = x;
+  uintmax_t dev = ax->st_dev;
+  return dev % table_size;
+}
+
+static bool
+dev_type_compare (void const *x, void const *y)
+{
+  struct dev_type const *ax = x;
+  struct dev_type const *ay = y;
+  return ax->st_dev == ay->st_dev;
+}
+
+/* Return the file system type of P with file descriptor FD, or 0 if not known.
+   If FD is negative, P's file descriptor is unavailable.
+   Try to cache known values.  */
+
+static fsword
+filesystem_type (FTSENT const *p, int fd)
+{
+  FTS *sp = p->fts_fts;
+  Hash_table *h = sp->fts_leaf_optimization_works_ht;
+  struct dev_type *ent;
+  struct statfs fs_buf;
+
+  /* If we're not in CWDFD mode, don't bother with this optimization,
+     since the caller is not serious about performance.  */
+  if (!ISSET (FTS_CWDFD))
+    return 0;
+
+  if (! h)
+    h = sp->fts_leaf_optimization_works_ht
+      = hash_initialize (DEV_TYPE_HT_INITIAL_SIZE, NULL, dev_type_hash,
+                         dev_type_compare, free);
+  if (h)
+    {
+      struct dev_type tmp;
+      tmp.st_dev = p->fts_statp->st_dev;
+      ent = hash_lookup (h, &tmp);
+      if (ent)
+        return ent->f_type;
+    }
+
+  /* Look-up failed.  Query directly and cache the result.  */
+  if (fd < 0 || fstatfs (fd, &fs_buf) != 0)
+    return 0;
+
+  if (h)
+    {
+      struct dev_type *t2 = malloc (sizeof *t2);
+      if (t2)
+        {
+          t2->st_dev = p->fts_statp->st_dev;
+          t2->f_type = fs_buf.f_type;
+
+          ent = hash_insert (h, t2);
+          if (ent)
+            fts_assert (ent == t2);
+          else
+            free (t2);
+        }
+    }
+
+  return fs_buf.f_type;
+}
+
+/* Return true if sorting dirents on inode numbers is known to improve
+   traversal performance for the directory P with descriptor DIR_FD.
+   Return false otherwise.  When in doubt, return true.
+   DIR_FD is negative if unavailable.  */
+static bool
+dirent_inode_sort_may_be_useful (FTSENT const *p, int dir_fd)
+{
+  /* Skip the sort only if we can determine efficiently
+     that skipping it is the right thing to do.
+     The cost of performing an unnecessary sort is negligible,
+     while the cost of *not* performing it can be O(N^2) with
+     a very large constant.  */
+
+  switch (filesystem_type (p, dir_fd))
+    {
+    case S_MAGIC_CIFS:
+    case S_MAGIC_NFS:
+    case S_MAGIC_TMPFS:
+      /* On a file system of any of these types, sorting
+         is unnecessary, and hence wasteful.  */
+      return false;
+
+    default:
+      return true;
+    }
+}
+
+/* Given an FTS entry P for a directory with descriptor DIR_FD,
+   return whether it is valid to apply leaf optimization.
+   The optimization is valid if a directory's st_nlink value equal
+   to MIN_DIR_NLINK means the directory has no subdirectories.
+   DIR_FD is negative if unavailable.  */
+static enum leaf_optimization
+leaf_optimization (FTSENT const *p, int dir_fd)
+{
+  switch (filesystem_type (p, dir_fd))
+    {
+    case 0:
+      /* Leaf optimization is unsafe if the file system type is unknown.  */
+      FALLTHROUGH;
+    case S_MAGIC_AFS:
+      /* Although AFS mount points are not counted in st_nlink, they
+         act like directories.  See <https://bugs.debian.org/143111>.  */
+      FALLTHROUGH;
+    case S_MAGIC_CIFS:
+      /* Leaf optimization causes 'find' to abort.  See
+         <https://lists.gnu.org/r/bug-gnulib/2018-04/msg00015.html>.  */
+      FALLTHROUGH;
+    case S_MAGIC_NFS:
+      /* NFS provides usable dirent.d_type but not necessarily for all entries
+         of large directories, so as per <https://bugzilla.redhat.com/1252549>
+         NFS should return true.  However st_nlink values are not accurate on
+         all implementations as per <https://bugzilla.redhat.com/1299169>.  */
+      FALLTHROUGH;
+    case S_MAGIC_PROC:
+      /* Per <https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=143111> /proc
+         may have bogus stat.st_nlink values.  */
+      return NO_LEAF_OPTIMIZATION;
+
+    default:
+      return OK_LEAF_OPTIMIZATION;
+    }
+}
+
+#else
+static bool
+dirent_inode_sort_may_be_useful (FTSENT const *p _GL_UNUSED,
+                                 int dir_fd _GL_UNUSED)
+{
+  return true;
+}
+static enum leaf_optimization
+leaf_optimization (FTSENT const *p _GL_UNUSED, int dir_fd _GL_UNUSED)
+{
+  return NO_LEAF_OPTIMIZATION;
+}
+#endif
+
+/*
+ * Special case of "/" at the end of the file name so that slashes aren't
+ * appended which would cause file names to be written as "....//foo".
+ */
+#define NAPPEND(p)                                                      \
+        (p->fts_path[p->fts_pathlen - 1] == '/'                         \
+            ? p->fts_pathlen - 1 : p->fts_pathlen)
+
+FTSENT *
+fts_read (register FTS *sp)
+{
+        register FTSENT *p, *tmp;
+        register unsigned short int instr;
+        register char *t;
+
+        /* If finished or unrecoverable error, return NULL. */
+        if (sp->fts_cur == NULL || ISSET(FTS_STOP))
+                return (NULL);
+
+        /* Set current node pointer. */
+        p = sp->fts_cur;
+
+        /* Save and zero out user instructions. */
+        instr = p->fts_instr;
+        p->fts_instr = FTS_NOINSTR;
+
+        /* Any type of file may be re-visited; re-stat and re-turn. */
+        if (instr == FTS_AGAIN) {
+                p->fts_info = fts_stat(sp, p, false);
+                return (p);
+        }
+        Dprintf (("fts_read: p=%s\n",
+                  p->fts_info == FTS_INIT ? "" : p->fts_path));
+
+        /*
+         * Following a symlink -- SLNONE test allows application to see
+         * SLNONE and recover.  If indirecting through a symlink, have
+         * keep a pointer to current location.  If unable to get that
+         * pointer, follow fails.
+         */
+        if (instr == FTS_FOLLOW &&
+            (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) {
+                p->fts_info = fts_stat(sp, p, true);
+                if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) {
+                        if ((p->fts_symfd = diropen (sp, ".")) < 0) {
+                                p->fts_errno = errno;
+                                p->fts_info = FTS_ERR;
+                        } else
+                                p->fts_flags |= FTS_SYMFOLLOW;
+                }
+                goto check_for_dir;
+        }
+
+        /* Directory in pre-order. */
+        if (p->fts_info == FTS_D) {
+                /* If skipped or crossed mount point, do post-order visit. */
+                if (instr == FTS_SKIP ||
+                    (ISSET(FTS_XDEV) && p->fts_statp->st_dev != sp->fts_dev)) {
+                        if (p->fts_flags & FTS_SYMFOLLOW)
+                                (void)close(p->fts_symfd);
+                        if (sp->fts_child) {
+                                fts_lfree(sp->fts_child);
+                                sp->fts_child = NULL;
+                        }
+                        p->fts_info = FTS_DP;
+                        LEAVE_DIR (sp, p, "1");
+                        return (p);
+                }
+
+                /* Rebuild if only read the names and now traversing. */
+                if (sp->fts_child != NULL && ISSET(FTS_NAMEONLY)) {
+                        CLR(FTS_NAMEONLY);
+                        fts_lfree(sp->fts_child);
+                        sp->fts_child = NULL;
+                }
+
+                /*
+                 * Cd to the subdirectory.
+                 *
+                 * If have already read and now fail to chdir, whack the list
+                 * to make the names come out right, and set the parent errno
+                 * so the application will eventually get an error condition.
+                 * Set the FTS_DONTCHDIR flag so that when we logically change
+                 * directories back to the parent we don't do a chdir.
+                 *
+                 * If haven't read do so.  If the read fails, fts_build sets
+                 * FTS_STOP or the fts_info field of the node.
+                 */
+                if (sp->fts_child != NULL) {
+                        if (fts_safe_changedir(sp, p, -1, p->fts_accpath)) {
+                                p->fts_errno = errno;
+                                p->fts_flags |= FTS_DONTCHDIR;
+                                for (p = sp->fts_child; p != NULL;
+                                     p = p->fts_link)
+                                        p->fts_accpath =
+                                            p->fts_parent->fts_accpath;
+                        }
+                } else if ((sp->fts_child = fts_build(sp, BREAD)) == NULL) {
+                        if (ISSET(FTS_STOP))
+                                return (NULL);
+                        /* If fts_build's call to fts_safe_changedir failed
+                           because it was not able to fchdir into a
+                           subdirectory, tell the caller.  */
+                        if (p->fts_errno && p->fts_info != FTS_DNR)
+                                p->fts_info = FTS_ERR;
+                        LEAVE_DIR (sp, p, "2");
+                        return (p);
+                }
+                p = sp->fts_child;
+                sp->fts_child = NULL;
+                goto name;
+        }
+
+        /* Move to the next node on this level. */
+next:   tmp = p;
+
+        /* If we have so many directory entries that we're reading them
+           in batches, and we've reached the end of the current batch,
+           read in a new batch.  */
+        if (p->fts_link == NULL && p->fts_parent->fts_dirp)
+          {
+            p = tmp->fts_parent;
+            sp->fts_cur = p;
+            sp->fts_path[p->fts_pathlen] = '\0';
+
+            if ((p = fts_build (sp, BREAD)) == NULL)
+              {
+                if (ISSET(FTS_STOP))
+                  return NULL;
+                goto cd_dot_dot;
+              }
+
+            free(tmp);
+            goto name;
+          }
+
+        if ((p = p->fts_link) != NULL) {
+                sp->fts_cur = p;
+                free(tmp);
+
+                /*
+                 * If reached the top, return to the original directory (or
+                 * the root of the tree), and load the file names for the next
+                 * root.
+                 */
+                if (p->fts_level == FTS_ROOTLEVEL) {
+                        if (restore_initial_cwd(sp)) {
+                                SET(FTS_STOP);
+                                return (NULL);
+                        }
+                        free_dir(sp);
+                        fts_load(sp, p);
+                        setup_dir(sp);
+                        goto check_for_dir;
+                }
+
+                /*
+                 * User may have called fts_set on the node.  If skipped,
+                 * ignore.  If followed, get a file descriptor so we can
+                 * get back if necessary.
+                 */
+                if (p->fts_instr == FTS_SKIP)
+                        goto next;
+                if (p->fts_instr == FTS_FOLLOW) {
+                        p->fts_info = fts_stat(sp, p, true);
+                        if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) {
+                                if ((p->fts_symfd = diropen (sp, ".")) < 0) {
+                                        p->fts_errno = errno;
+                                        p->fts_info = FTS_ERR;
+                                } else
+                                        p->fts_flags |= FTS_SYMFOLLOW;
+                        }
+                        p->fts_instr = FTS_NOINSTR;
+                }
+
+name:           t = sp->fts_path + NAPPEND(p->fts_parent);
+                *t++ = '/';
+                memmove(t, p->fts_name, p->fts_namelen + 1);
+check_for_dir:
+                sp->fts_cur = p;
+                if (p->fts_info == FTS_NSOK)
+                  {
+                    if (p->fts_statp->st_size == FTS_STAT_REQUIRED)
+                      p->fts_info = fts_stat(sp, p, false);
+                    else
+                      fts_assert (p->fts_statp->st_size == FTS_NO_STAT_REQUIRED);
+                  }
+
+                if (p->fts_info == FTS_D)
+                  {
+                    /* Now that P->fts_statp is guaranteed to be valid,
+                       if this is a command-line directory, record its
+                       device number, to be used for FTS_XDEV.  */
+                    if (p->fts_level == FTS_ROOTLEVEL)
+                      sp->fts_dev = p->fts_statp->st_dev;
+                    Dprintf (("  entering: %s\n", p->fts_path));
+                    if (! enter_dir (sp, p))
+                      {
+                        __set_errno (ENOMEM);
+                        return NULL;
+                      }
+                  }
+                return p;
+        }
+cd_dot_dot:
+
+        /* Move up to the parent node. */
+        p = tmp->fts_parent;
+        sp->fts_cur = p;
+        free(tmp);
+
+        if (p->fts_level == FTS_ROOTPARENTLEVEL) {
+                /*
+                 * Done; free everything up and set errno to 0 so the user
+                 * can distinguish between error and EOF.
+                 */
+                free(p);
+                __set_errno (0);
+                return (sp->fts_cur = NULL);
+        }
+
+        fts_assert (p->fts_info != FTS_NSOK);
+
+        /* NUL terminate the file name.  */
+        sp->fts_path[p->fts_pathlen] = '\0';
+
+        /*
+         * Return to the parent directory.  If at a root node, restore
+         * the initial working directory.  If we came through a symlink,
+         * go back through the file descriptor.  Otherwise, move up
+         * one level, via "..".
+         */
+        if (p->fts_level == FTS_ROOTLEVEL) {
+                if (restore_initial_cwd(sp)) {
+                        p->fts_errno = errno;
+                        SET(FTS_STOP);
+                }
+        } else if (p->fts_flags & FTS_SYMFOLLOW) {
+                if (FCHDIR(sp, p->fts_symfd)) {
+                        p->fts_errno = errno;
+                        SET(FTS_STOP);
+                }
+                (void)close(p->fts_symfd);
+        } else if (!(p->fts_flags & FTS_DONTCHDIR) &&
+                   fts_safe_changedir(sp, p->fts_parent, -1, "..")) {
+                p->fts_errno = errno;
+                SET(FTS_STOP);
+        }
+
+        /* If the directory causes a cycle, preserve the FTS_DC flag and keep
+           the corresponding dev/ino pair in the hash table.  It is going to be
+           removed when leaving the original directory.  */
+        if (p->fts_info != FTS_DC) {
+                p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP;
+                if (p->fts_errno == 0)
+                        LEAVE_DIR (sp, p, "3");
+        }
+        return ISSET(FTS_STOP) ? NULL : p;
+}
+
+/*
+ * Fts_set takes the stream as an argument although it's not used in this
+ * implementation; it would be necessary if anyone wanted to add global
+ * semantics to fts using fts_set.  An error return is allowed for similar
+ * reasons.
+ */
+/* ARGSUSED */
+int
+fts_set(FTS *sp _GL_UNUSED, FTSENT *p, int instr)
+{
+        if (instr != 0 && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
+            instr != FTS_NOINSTR && instr != FTS_SKIP) {
+                __set_errno (EINVAL);
+                return (1);
+        }
+        p->fts_instr = instr;
+        return (0);
+}
+
+FTSENT *
+fts_children (register FTS *sp, int instr)
+{
+        register FTSENT *p;
+        int fd;
+
+        if (instr != 0 && instr != FTS_NAMEONLY) {
+                __set_errno (EINVAL);
+                return (NULL);
+        }
+
+        /* Set current node pointer. */
+        p = sp->fts_cur;
+
+        /*
+         * Errno set to 0 so user can distinguish empty directory from
+         * an error.
+         */
+        __set_errno (0);
+
+        /* Fatal errors stop here. */
+        if (ISSET(FTS_STOP))
+                return (NULL);
+
+        /* Return logical hierarchy of user's arguments. */
+        if (p->fts_info == FTS_INIT)
+                return (p->fts_link);
+
+        /*
+         * If not a directory being visited in pre-order, stop here.  Could
+         * allow FTS_DNR, assuming the user has fixed the problem, but the
+         * same effect is available with FTS_AGAIN.
+         */
+        if (p->fts_info != FTS_D /* && p->fts_info != FTS_DNR */)
+                return (NULL);
+
+        /* Free up any previous child list. */
+        if (sp->fts_child != NULL)
+                fts_lfree(sp->fts_child);
+
+        if (instr == FTS_NAMEONLY) {
+                SET(FTS_NAMEONLY);
+                instr = BNAMES;
+        } else
+                instr = BCHILD;
+
+        /*
+         * If using chdir on a relative file name and called BEFORE fts_read
+         * does its chdir to the root of a traversal, we can lose -- we need to
+         * chdir into the subdirectory, and we don't know where the current
+         * directory is, so we can't get back so that the upcoming chdir by
+         * fts_read will work.
+         */
+        if (p->fts_level != FTS_ROOTLEVEL || p->fts_accpath[0] == '/' ||
+            ISSET(FTS_NOCHDIR))
+                return (sp->fts_child = fts_build(sp, instr));
+
+        if ((fd = diropen (sp, ".")) < 0)
+                return (sp->fts_child = NULL);
+        sp->fts_child = fts_build(sp, instr);
+        if (ISSET(FTS_CWDFD))
+          {
+            cwd_advance_fd (sp, fd, true);
+          }
+        else
+          {
+            if (fchdir(fd))
+              {
+                int saved_errno = errno;
+                close (fd);
+                __set_errno (saved_errno);
+                return NULL;
+              }
+            close (fd);
+          }
+        return (sp->fts_child);
+}
+
+/* A comparison function to sort on increasing inode number.
+   For some file system types, sorting either way makes a huge
+   performance difference for a directory with very many entries,
+   but sorting on increasing values is slightly better than sorting
+   on decreasing values.  The difference is in the 5% range.  */
+static int
+fts_compare_ino (struct _ftsent const **a, struct _ftsent const **b)
+{
+  return _GL_CMP (a[0]->fts_statp->st_ino, b[0]->fts_statp->st_ino);
+}
+
+/* Map the dirent.d_type value, DTYPE, to the corresponding stat.st_mode
+   S_IF* bit and set ST.st_mode, thus clearing all other bits in that field.  */
+static void
+set_stat_type (struct stat *st, unsigned int dtype)
+{
+  mode_t type;
+  switch (dtype)
+    {
+    case DT_BLK:
+      type = S_IFBLK;
+      break;
+    case DT_CHR:
+      type = S_IFCHR;
+      break;
+    case DT_DIR:
+      type = S_IFDIR;
+      break;
+    case DT_FIFO:
+      type = S_IFIFO;
+      break;
+    case DT_LNK:
+      type = S_IFLNK;
+      break;
+    case DT_REG:
+      type = S_IFREG;
+      break;
+    case DT_SOCK:
+      type = S_IFSOCK;
+      break;
+    default:
+      type = 0;
+    }
+  st->st_mode = type;
+}
+
+#define closedir_and_clear(dirp)                \
+  do                                            \
+    {                                           \
+      closedir (dirp);                          \
+      dirp = NULL;                              \
+    }                                           \
+  while (0)
+
+#define fts_opendir(file, Pdir_fd)                              \
+        opendirat((! ISSET(FTS_NOCHDIR) && ISSET(FTS_CWDFD)     \
+                   ? sp->fts_cwd_fd : AT_FDCWD),                \
+                  file,                                         \
+                  (((ISSET(FTS_PHYSICAL)                        \
+                     && ! (ISSET(FTS_COMFOLLOW)                 \
+                           && cur->fts_level == FTS_ROOTLEVEL)) \
+                    ? O_NOFOLLOW : 0)),                         \
+                  Pdir_fd)
+
+/*
+ * This is the tricky part -- do not casually change *anything* in here.  The
+ * idea is to build the linked list of entries that are used by fts_children
+ * and fts_read.  There are lots of special cases.
+ *
+ * The real slowdown in walking the tree is the stat calls.  If FTS_NOSTAT is
+ * set and it's a physical walk (so that symbolic links can't be directories),
+ * we can do things quickly.  First, if it's a 4.4BSD file system, the type
+ * of the file is in the directory entry.  Otherwise, we assume that the number
+ * of subdirectories in a node is equal to the number of links to the parent.
+ * The former skips all stat calls.  The latter skips stat calls in any leaf
+ * directories and for any files after the subdirectories in the directory have
+ * been found, cutting the stat calls by about 2/3.
+ */
+static FTSENT *
+internal_function
+fts_build (register FTS *sp, int type)
+{
+        register FTSENT *p, *head;
+        register size_t nitems;
+        FTSENT *tail;
+        void *oldaddr;
+        int saved_errno;
+        bool descend;
+        bool doadjust;
+        ptrdiff_t level;
+        size_t len, maxlen, new_len;
+        char *cp;
+        int dir_fd;
+        FTSENT *cur = sp->fts_cur;
+        bool continue_readdir = !!cur->fts_dirp;
+        bool sort_by_inode = false;
+        size_t max_entries;
+
+        /* When cur->fts_dirp is non-NULL, that means we should
+           continue calling readdir on that existing DIR* pointer
+           rather than opening a new one.  */
+        if (continue_readdir)
+          {
+            DIR *dp = cur->fts_dirp;
+            dir_fd = dirfd (dp);
+            if (dir_fd < 0)
+              {
+                closedir_and_clear (cur->fts_dirp);
+                if (type == BREAD)
+                  {
+                    cur->fts_info = FTS_DNR;
+                    cur->fts_errno = errno;
+                  }
+                return NULL;
+              }
+          }
+        else
+          {
+            /* Open the directory for reading.  If this fails, we're done.
+               If being called from fts_read, set the fts_info field. */
+            if ((cur->fts_dirp = fts_opendir(cur->fts_accpath, &dir_fd)) == NULL)
+              {
+                if (type == BREAD)
+                  {
+                    cur->fts_info = FTS_DNR;
+                    cur->fts_errno = errno;
+                  }
+                return NULL;
+              }
+            /* Rather than calling fts_stat for each and every entry encountered
+               in the readdir loop (below), stat each directory only right after
+               opening it.  */
+            if (cur->fts_info == FTS_NSOK)
+              cur->fts_info = fts_stat(sp, cur, false);
+            else if (sp->fts_options & FTS_TIGHT_CYCLE_CHECK)
+              {
+                /* Now read the stat info again after opening a directory to
+                   reveal eventual changes caused by a submount triggered by
+                   the traversal.  But do it only for utilities which use
+                   FTS_TIGHT_CYCLE_CHECK.  Therefore, only find and du
+                   benefit/suffer from this feature for now.  */
+                LEAVE_DIR (sp, cur, "4");
+                fts_stat (sp, cur, false);
+                if (! enter_dir (sp, cur))
+                  {
+                    __set_errno (ENOMEM);
+                    return NULL;
+                  }
+              }
+          }
+
+        /* Maximum number of readdir entries to read at one time.  This
+           limitation is to avoid reading millions of entries into memory
+           at once.  When an fts_compar function is specified, we have no
+           choice: we must read all entries into memory before calling that
+           function.  But when no such function is specified, we can read
+           entries in batches that are large enough to help us with inode-
+           sorting, yet not so large that we risk exhausting memory.  */
+        max_entries = sp->fts_compar ? SIZE_MAX : FTS_MAX_READDIR_ENTRIES;
+
+        /*
+         * If we're going to need to stat anything or we want to descend
+         * and stay in the directory, chdir.  If this fails we keep going,
+         * but set a flag so we don't chdir after the post-order visit.
+         * We won't be able to stat anything, but we can still return the
+         * names themselves.  Note, that since fts_read won't be able to
+         * chdir into the directory, it will have to return different file
+         * names than before, i.e. "a/b" instead of "b".  Since the node
+         * has already been visited in pre-order, have to wait until the
+         * post-order visit to return the error.  There is a special case
+         * here, if there was nothing to stat then it's not an error to
+         * not be able to stat.  This is all fairly nasty.  If a program
+         * needed sorted entries or stat information, they had better be
+         * checking FTS_NS on the returned nodes.
+         */
+        if (continue_readdir)
+          {
+            /* When resuming a short readdir run, we already have
+               the required dirp and dir_fd.  */
+            descend = true;
+          }
+        else
+          {
+            /* Try to descend unless it is a names-only fts_children,
+               or the directory is known to lack subdirectories.  */
+            descend = (type != BNAMES
+                       && ! (ISSET (FTS_NOSTAT) && ISSET (FTS_PHYSICAL)
+                             && ! ISSET (FTS_SEEDOT)
+                             && cur->fts_statp->st_nlink == MIN_DIR_NLINK
+                             && (leaf_optimization (cur, dir_fd)
+                                 != NO_LEAF_OPTIMIZATION)));
+            if (descend || type == BREAD)
+              {
+                if (ISSET(FTS_CWDFD))
+                  dir_fd = fcntl (dir_fd, F_DUPFD_CLOEXEC, STDERR_FILENO + 1);
+                if (dir_fd < 0 || fts_safe_changedir(sp, cur, dir_fd, NULL)) {
+                        if (descend && type == BREAD)
+                                cur->fts_errno = errno;
+                        cur->fts_flags |= FTS_DONTCHDIR;
+                        descend = false;
+                        closedir_and_clear(cur->fts_dirp);
+                        if (ISSET(FTS_CWDFD) && 0 <= dir_fd)
+                                close (dir_fd);
+                        cur->fts_dirp = NULL;
+                } else
+                        descend = true;
+              }
+          }
+
+        /*
+         * Figure out the max file name length that can be stored in the
+         * current buffer -- the inner loop allocates more space as necessary.
+         * We really wouldn't have to do the maxlen calculations here, we
+         * could do them in fts_read before returning the name, but it's a
+         * lot easier here since the length is part of the dirent structure.
+         *
+         * If not changing directories set a pointer so that can just append
+         * each new component into the file name.
+         */
+        len = NAPPEND(cur);
+        if (ISSET(FTS_NOCHDIR)) {
+                cp = sp->fts_path + len;
+                *cp++ = '/';
+        } else {
+                /* GCC, you're too verbose. */
+                cp = NULL;
+        }
+        len++;
+        maxlen = sp->fts_pathlen - len;
+
+        level = cur->fts_level + 1;
+
+        /* Read the directory, attaching each entry to the "link" pointer. */
+        doadjust = false;
+        head = NULL;
+        tail = NULL;
+        nitems = 0;
+        while (cur->fts_dirp) {
+                size_t d_namelen;
+                __set_errno (0);
+                struct dirent *dp = readdir(cur->fts_dirp);
+                if (dp == NULL) {
+                        if (errno) {
+                                cur->fts_errno = errno;
+                                /* If we've not read any items yet, treat
+                                   the error as if we can't access the dir.  */
+                                cur->fts_info = (continue_readdir || nitems)
+                                                ? FTS_ERR : FTS_DNR;
+                        }
+                        break;
+                }
+                if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name))
+                        continue;
+
+                d_namelen = _D_EXACT_NAMLEN (dp);
+                p = fts_alloc (sp, dp->d_name, d_namelen);
+                if (!p)
+                        goto mem1;
+                if (d_namelen >= maxlen) {
+                        /* include space for NUL */
+                        oldaddr = sp->fts_path;
+                        if (! fts_palloc(sp, d_namelen + len + 1)) {
+                                /*
+                                 * No more memory.  Save
+                                 * errno, free up the current structure and the
+                                 * structures already allocated.
+                                 */
+mem1:                           saved_errno = errno;
+                                free(p);
+                                fts_lfree(head);
+                                closedir_and_clear(cur->fts_dirp);
+                                cur->fts_info = FTS_ERR;
+                                SET(FTS_STOP);
+                                __set_errno (saved_errno);
+                                return (NULL);
+                        }
+                        /* Did realloc() change the pointer? */
+                        if (oldaddr != sp->fts_path) {
+                                doadjust = true;
+                                if (ISSET(FTS_NOCHDIR))
+                                        cp = sp->fts_path + len;
+                        }
+                        maxlen = sp->fts_pathlen - len;
+                }
+
+                new_len = len + d_namelen;
+                if (new_len < len) {
+                        /*
+                         * In the unlikely event that we would end up
+                         * with a file name longer than SIZE_MAX, free up
+                         * the current structure and the structures already
+                         * allocated, then error out with ENAMETOOLONG.
+                         */
+                        free(p);
+                        fts_lfree(head);
+                        closedir_and_clear(cur->fts_dirp);
+                        cur->fts_info = FTS_ERR;
+                        SET(FTS_STOP);
+                        __set_errno (ENAMETOOLONG);
+                        return (NULL);
+                }
+                p->fts_level = level;
+                p->fts_parent = sp->fts_cur;
+                p->fts_pathlen = new_len;
+
+                /* Store dirent.d_ino, in case we need to sort
+                   entries before processing them.  */
+                p->fts_statp->st_ino = D_INO (dp);
+
+                /* Build a file name for fts_stat to stat. */
+                if (ISSET(FTS_NOCHDIR)) {
+                        p->fts_accpath = p->fts_path;
+                        memmove(cp, p->fts_name, p->fts_namelen + 1);
+                } else
+                        p->fts_accpath = p->fts_name;
+
+                if (sp->fts_compar == NULL || ISSET(FTS_DEFER_STAT)) {
+                        /* Record what fts_read will have to do with this
+                           entry. In many cases, it will simply fts_stat it,
+                           but we can take advantage of any d_type information
+                           to optimize away the unnecessary stat calls.  I.e.,
+                           if FTS_NOSTAT is in effect and we're not following
+                           symlinks (FTS_PHYSICAL) and d_type indicates this
+                           is *not* a directory, then we won't have to stat it
+                           at all.  If it *is* a directory, then (currently)
+                           we stat it regardless, in order to get device and
+                           inode numbers.  Some day we might optimize that
+                           away, too, for directories where d_ino is known to
+                           be valid.  */
+                        bool skip_stat = (ISSET(FTS_NOSTAT)
+                                          && DT_IS_KNOWN(dp)
+                                          && ! DT_MUST_BE(dp, DT_DIR)
+                                          && (ISSET(FTS_PHYSICAL)
+                                              || ! DT_MUST_BE(dp, DT_LNK)));
+                        p->fts_info = FTS_NSOK;
+                        /* Propagate dirent.d_type information back
+                           to caller, when possible.  */
+                        set_stat_type (p->fts_statp, D_TYPE (dp));
+                        fts_set_stat_required(p, !skip_stat);
+                } else {
+                        p->fts_info = fts_stat(sp, p, false);
+                }
+
+                /* We walk in directory order so "ls -f" doesn't get upset. */
+                p->fts_link = NULL;
+                if (head == NULL)
+                        head = tail = p;
+                else {
+                        tail->fts_link = p;
+                        tail = p;
+                }
+
+                /* If there are many entries, no sorting function has been
+                   specified, and this file system is of a type that may be
+                   slow with a large number of entries, arrange to sort the
+                   directory entries on increasing inode numbers.
+
+                   The NITEMS comparison uses ==, not >, because the test
+                   needs to be tried at most once once, and NITEMS will exceed
+                   the threshold after it is incremented below.  */
+                if (nitems == _FTS_INODE_SORT_DIR_ENTRIES_THRESHOLD
+                    && !sp->fts_compar)
+                  sort_by_inode = dirent_inode_sort_may_be_useful (cur, dir_fd);
+
+                ++nitems;
+                if (max_entries <= nitems) {
+                        /* When there are too many dir entries, leave
+                           fts_dirp open, so that a subsequent fts_read
+                           can take up where we leave off.  */
+                        goto break_without_closedir;
+                }
+        }
+
+        if (cur->fts_dirp)
+                closedir_and_clear(cur->fts_dirp);
+
+ break_without_closedir:
+
+        /*
+         * If realloc() changed the address of the file name, adjust the
+         * addresses for the rest of the tree and the dir list.
+         */
+        if (doadjust)
+                fts_padjust(sp, head);
+
+        /*
+         * If not changing directories, reset the file name back to original
+         * state.
+         */
+        if (ISSET(FTS_NOCHDIR)) {
+                if (len == sp->fts_pathlen || nitems == 0)
+                        --cp;
+                *cp = '\0';
+        }
+
+        /*
+         * If descended after called from fts_children or after called from
+         * fts_read and nothing found, get back.  At the root level we use
+         * the saved fd; if one of fts_open()'s arguments is a relative name
+         * to an empty directory, we wind up here with no other way back.  If
+         * can't get back, we're done.
+         */
+        if (!continue_readdir && descend && (type == BCHILD || !nitems) &&
+            (cur->fts_level == FTS_ROOTLEVEL
+             ? restore_initial_cwd(sp)
+             : fts_safe_changedir(sp, cur->fts_parent, -1, ".."))) {
+                cur->fts_info = FTS_ERR;
+                SET(FTS_STOP);
+                fts_lfree(head);
+                return (NULL);
+        }
+
+        /* If didn't find anything, return NULL. */
+        if (!nitems) {
+                if (type == BREAD
+                    && cur->fts_info != FTS_DNR && cur->fts_info != FTS_ERR)
+                        cur->fts_info = FTS_DP;
+                fts_lfree(head);
+                return (NULL);
+        }
+
+        if (sort_by_inode) {
+                sp->fts_compar = fts_compare_ino;
+                head = fts_sort (sp, head, nitems);
+                sp->fts_compar = NULL;
+        }
+
+        /* Sort the entries. */
+        if (sp->fts_compar && nitems > 1)
+                head = fts_sort(sp, head, nitems);
+        return (head);
+}
+
+#if FTS_DEBUG
+
+/* Walk ->fts_parent links starting at E_CURR, until the root of the
+   current hierarchy.  There should be a directory with dev/inode
+   matching those of AD.  If not, print a lot of diagnostics.  */
+static void
+find_matching_ancestor (FTSENT const *e_curr, struct Active_dir const *ad)
+{
+  FTSENT const *ent;
+  for (ent = e_curr; ent->fts_level >= FTS_ROOTLEVEL; ent = ent->fts_parent)
+    {
+      if (ad->ino == ent->fts_statp->st_ino
+          && ad->dev == ent->fts_statp->st_dev)
+        return;
+    }
+  printf ("ERROR: tree dir, %s, not active\n", ad->fts_ent->fts_accpath);
+  printf ("active dirs:\n");
+  for (ent = e_curr;
+       ent->fts_level >= FTS_ROOTLEVEL; ent = ent->fts_parent)
+    printf ("  %s(%"PRIuMAX"/%"PRIuMAX") to %s(%"PRIuMAX"/%"PRIuMAX")...\n",
+            ad->fts_ent->fts_accpath,
+            (uintmax_t) ad->dev,
+            (uintmax_t) ad->ino,
+            ent->fts_accpath,
+            (uintmax_t) ent->fts_statp->st_dev,
+            (uintmax_t) ent->fts_statp->st_ino);
+}
+
+void
+fts_cross_check (FTS const *sp)
+{
+  FTSENT const *ent = sp->fts_cur;
+  FTSENT const *t;
+  if ( ! ISSET (FTS_TIGHT_CYCLE_CHECK))
+    return;
+
+  Dprintf (("fts-cross-check cur=%s\n", ent->fts_path));
+  /* Make sure every parent dir is in the tree.  */
+  for (t = ent->fts_parent; t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
+    {
+      struct Active_dir ad;
+      ad.ino = t->fts_statp->st_ino;
+      ad.dev = t->fts_statp->st_dev;
+      if ( ! hash_lookup (sp->fts_cycle.ht, &ad))
+        printf ("ERROR: active dir, %s, not in tree\n", t->fts_path);
+    }
+
+  /* Make sure every dir in the tree is an active dir.
+     But ENT is not necessarily a directory.  If so, just skip this part. */
+  if (ent->fts_parent->fts_level >= FTS_ROOTLEVEL
+      && (ent->fts_info == FTS_DP
+          || ent->fts_info == FTS_D))
+    {
+      struct Active_dir *ad;
+      for (ad = hash_get_first (sp->fts_cycle.ht); ad != NULL;
+           ad = hash_get_next (sp->fts_cycle.ht, ad))
+        {
+          find_matching_ancestor (ent, ad);
+        }
+    }
+}
+
+static bool
+same_fd (int fd1, int fd2)
+{
+  struct stat sb1, sb2;
+  return (fstat (fd1, &sb1) == 0
+          && fstat (fd2, &sb2) == 0
+          && SAME_INODE (sb1, sb2));
+}
+
+static void
+fd_ring_print (FTS const *sp, FILE *stream, char const *msg)
+{
+  I_ring const *fd_ring = &sp->fts_fd_ring;
+  unsigned int i = fd_ring->fts_front;
+  char *cwd = getcwdat (sp->fts_cwd_fd, NULL, 0);
+  fprintf (stream, "=== %s ========== %s\n", msg, cwd);
+  free (cwd);
+  if (i_ring_empty (fd_ring))
+    return;
+
+  while (true)
+    {
+      int fd = fd_ring->fts_fd_ring[i];
+      if (fd < 0)
+        fprintf (stream, "%d: %d:\n", i, fd);
+      else
+        {
+          char *wd = getcwdat (fd, NULL, 0);
+          fprintf (stream, "%d: %d: %s\n", i, fd, wd);
+          free (wd);
+        }
+      if (i == fd_ring->fts_back)
+        break;
+      i = (i + I_RING_SIZE - 1) % I_RING_SIZE;
+    }
+}
+
+/* Ensure that each file descriptor on the fd_ring matches a
+   parent, grandparent, etc. of the current working directory.  */
+static void
+fd_ring_check (FTS const *sp)
+{
+  if (!fts_debug)
+    return;
+
+  /* Make a writable copy.  */
+  I_ring fd_w = sp->fts_fd_ring;
+
+  int cwd_fd = sp->fts_cwd_fd;
+  cwd_fd = fcntl (cwd_fd, F_DUPFD_CLOEXEC, STDERR_FILENO + 1);
+  char *dot = getcwdat (cwd_fd, NULL, 0);
+  error (0, 0, "===== check ===== cwd: %s", dot);
+  free (dot);
+  while ( ! i_ring_empty (&fd_w))
+    {
+      int fd = i_ring_pop (&fd_w);
+      if (0 <= fd)
+        {
+          int open_flags = O_SEARCH | O_CLOEXEC;
+          int parent_fd = openat (cwd_fd, "..", open_flags);
+          if (parent_fd < 0)
+            {
+              // Warn?
+              break;
+            }
+          if (!same_fd (fd, parent_fd))
+            {
+              char *cwd = getcwdat (fd, NULL, 0);
+              error (0, errno, "ring  : %s", cwd);
+              char *c2 = getcwdat (parent_fd, NULL, 0);
+              error (0, errno, "parent: %s", c2);
+              free (cwd);
+              free (c2);
+              fts_assert (0);
+            }
+          close (cwd_fd);
+          cwd_fd = parent_fd;
+        }
+    }
+  close (cwd_fd);
+}
+#endif
+
+static unsigned short int
+internal_function
+fts_stat(FTS *sp, register FTSENT *p, bool follow)
+{
+        struct stat *sbp = p->fts_statp;
+
+        if (p->fts_level == FTS_ROOTLEVEL && ISSET(FTS_COMFOLLOW))
+                follow = true;
+
+        /*
+         * If doing a logical walk, or application requested FTS_FOLLOW, do
+         * a stat(2).  If that fails, check for a non-existent symlink.  If
+         * fail, set the errno from the stat call.
+         */
+        if (ISSET(FTS_LOGICAL) || follow) {
+                if (stat(p->fts_accpath, sbp)) {
+                        if (errno == ENOENT
+                            && lstat(p->fts_accpath, sbp) == 0) {
+                                __set_errno (0);
+                                return (FTS_SLNONE);
+                        }
+                        p->fts_errno = errno;
+                        goto err;
+                }
+        } else if (fstatat(sp->fts_cwd_fd, p->fts_accpath, sbp,
+                           AT_SYMLINK_NOFOLLOW)) {
+                p->fts_errno = errno;
+err:            memset(sbp, 0, sizeof(struct stat));
+                return (FTS_NS);
+        }
+
+        if (S_ISDIR(sbp->st_mode)) {
+                if (ISDOT(p->fts_name)) {
+                        /* Command-line "." and ".." are real directories. */
+                        return (p->fts_level == FTS_ROOTLEVEL ? FTS_D : FTS_DOT);
+                }
+
+                return (FTS_D);
+        }
+        if (S_ISLNK(sbp->st_mode))
+                return (FTS_SL);
+        if (S_ISREG(sbp->st_mode))
+                return (FTS_F);
+        return (FTS_DEFAULT);
+}
+
+static int
+fts_compar (void const *a, void const *b)
+{
+  /* Convert A and B to the correct types, to pacify the compiler, and
+     for portability to bizarre hosts where "void const *" and "FTSENT
+     const **" differ in runtime representation.  The comparison
+     function cannot modify *a and *b, but there is no compile-time
+     check for this.  */
+  FTSENT const **pa = (FTSENT const **) a;
+  FTSENT const **pb = (FTSENT const **) b;
+  return pa[0]->fts_fts->fts_compar (pa, pb);
+}
+
+static FTSENT *
+internal_function
+fts_sort (FTS *sp, FTSENT *head, register size_t nitems)
+{
+        register FTSENT **ap, *p;
+
+        /* On most modern hosts, void * and FTSENT ** have the same
+           run-time representation, and one can convert sp->fts_compar to
+           the type qsort expects without problem.  Use the heuristic that
+           this is OK if the two pointer types are the same size, and if
+           converting FTSENT ** to long int is the same as converting
+           FTSENT ** to void * and then to long int.  This heuristic isn't
+           valid in general but we don't know of any counterexamples.  */
+        FTSENT *dummy;
+        int (*compare) (void const *, void const *) =
+          ((sizeof &dummy == sizeof (void *)
+            && (long int) &dummy == (long int) (void *) &dummy)
+           ? (int (*) (void const *, void const *)) sp->fts_compar
+           : fts_compar);
+
+        /*
+         * Construct an array of pointers to the structures and call qsort(3).
+         * Reassemble the array in the order returned by qsort.  If unable to
+         * sort for memory reasons, return the directory entries in their
+         * current order.  Allocate enough space for the current needs plus
+         * 40 so don't realloc one entry at a time.
+         */
+        if (nitems > sp->fts_nitems) {
+                FTSENT **a;
+
+                sp->fts_nitems = nitems + 40;
+                if (SIZE_MAX / sizeof *a < sp->fts_nitems
+                    || ! (a = realloc (sp->fts_array,
+                                       sp->fts_nitems * sizeof *a))) {
+                        free(sp->fts_array);
+                        sp->fts_array = NULL;
+                        sp->fts_nitems = 0;
+                        return (head);
+                }
+                sp->fts_array = a;
+        }
+        for (ap = sp->fts_array, p = head; p; p = p->fts_link)
+                *ap++ = p;
+        qsort((void *)sp->fts_array, nitems, sizeof(FTSENT *), compare);
+        for (head = *(ap = sp->fts_array); --nitems; ++ap)
+                ap[0]->fts_link = ap[1];
+        ap[0]->fts_link = NULL;
+        return (head);
+}
+
+static FTSENT *
+internal_function
+fts_alloc (FTS *sp, const char *name, register size_t namelen)
+{
+        register FTSENT *p;
+        size_t len;
+
+        /*
+         * The file name is a variable length array.  Allocate the FTSENT
+         * structure and the file name in one chunk.
+         */
+        len = FLEXSIZEOF(FTSENT, fts_name, namelen + 1);
+        if ((p = malloc(len)) == NULL)
+                return (NULL);
+
+        /* Copy the name and guarantee NUL termination. */
+        memcpy(p->fts_name, name, namelen);
+        p->fts_name[namelen] = '\0';
+
+        p->fts_namelen = namelen;
+        p->fts_fts = sp;
+        p->fts_path = sp->fts_path;
+        p->fts_errno = 0;
+        p->fts_dirp = NULL;
+        p->fts_flags = 0;
+        p->fts_instr = FTS_NOINSTR;
+        p->fts_number = 0;
+        p->fts_pointer = NULL;
+        return (p);
+}
+
+static void
+internal_function
+fts_lfree (register FTSENT *head)
+{
+        register FTSENT *p;
+
+        /* Free a linked list of structures. */
+        while ((p = head)) {
+                head = head->fts_link;
+                if (p->fts_dirp)
+                        closedir (p->fts_dirp);
+                free(p);
+        }
+}
+
+/*
+ * Allow essentially unlimited file name lengths; find, rm, ls should
+ * all work on any tree.  Most systems will allow creation of file
+ * names much longer than MAXPATHLEN, even though the kernel won't
+ * resolve them.  Add the size (not just what's needed) plus 256 bytes
+ * so don't realloc the file name 2 bytes at a time.
+ */
+static bool
+internal_function
+fts_palloc (FTS *sp, size_t more)
+{
+        char *p;
+        size_t new_len = sp->fts_pathlen + more + 256;
+
+        /*
+         * See if fts_pathlen would overflow.
+         */
+        if (new_len < sp->fts_pathlen) {
+                free(sp->fts_path);
+                sp->fts_path = NULL;
+                __set_errno (ENAMETOOLONG);
+                return false;
+        }
+        sp->fts_pathlen = new_len;
+        p = realloc(sp->fts_path, sp->fts_pathlen);
+        if (p == NULL) {
+                free(sp->fts_path);
+                sp->fts_path = NULL;
+                return false;
+        }
+        sp->fts_path = p;
+        return true;
+}
+
+/*
+ * When the file name is realloc'd, have to fix all of the pointers in
+ *  structures already returned.
+ */
+static void
+internal_function
+fts_padjust (FTS *sp, FTSENT *head)
+{
+        FTSENT *p;
+        char *addr = sp->fts_path;
+
+#define ADJUST(p) do {                                                  \
+        if ((p)->fts_accpath != (p)->fts_name) {                        \
+                (p)->fts_accpath =                                      \
+                    (char *)addr + ((p)->fts_accpath - (p)->fts_path);  \
+        }                                                               \
+        (p)->fts_path = addr;                                           \
+} while (0)
+        /* Adjust the current set of children. */
+        for (p = sp->fts_child; p; p = p->fts_link)
+                ADJUST(p);
+
+        /* Adjust the rest of the tree, including the current level. */
+        for (p = head; p->fts_level >= FTS_ROOTLEVEL;) {
+                ADJUST(p);
+                p = p->fts_link ? p->fts_link : p->fts_parent;
+        }
+}
+
+static size_t
+internal_function _GL_ATTRIBUTE_PURE
+fts_maxarglen (char * const *argv)
+{
+        size_t len, max;
+
+        for (max = 0; *argv; ++argv)
+                if ((len = strlen(*argv)) > max)
+                        max = len;
+        return (max + 1);
+}
+
+/*
+ * Change to dir specified by fd or file name without getting
+ * tricked by someone changing the world out from underneath us.
+ * Assumes p->fts_statp->st_dev and p->fts_statp->st_ino are filled in.
+ * If FD is non-negative, expect it to be used after this function returns,
+ * and to be closed eventually.  So don't pass e.g., 'dirfd(dirp)' and then
+ * do closedir(dirp), because that would invalidate the saved FD.
+ * Upon failure, close FD immediately and return nonzero.
+ */
+static int
+internal_function
+fts_safe_changedir (FTS *sp, FTSENT *p, int fd, char const *dir)
+{
+        int ret;
+        bool is_dotdot = dir && STREQ (dir, "..");
+        int newfd;
+
+        /* This clause handles the unusual case in which FTS_NOCHDIR
+           is specified, along with FTS_CWDFD.  In that case, there is
+           no need to change even the virtual cwd file descriptor.
+           However, if FD is non-negative, we do close it here.  */
+        if (ISSET (FTS_NOCHDIR))
+          {
+            if (ISSET (FTS_CWDFD) && 0 <= fd)
+              close (fd);
+            return 0;
+          }
+
+        if (fd < 0 && is_dotdot && ISSET (FTS_CWDFD))
+          {
+            /* When possible, skip the diropen and subsequent fstat+dev/ino
+               comparison.  I.e., when changing to parent directory
+               (chdir ("..")), use a file descriptor from the ring and
+               save the overhead of diropen+fstat, as well as avoiding
+               failure when we lack "x" access to the virtual cwd.  */
+            if ( ! i_ring_empty (&sp->fts_fd_ring))
+              {
+                int parent_fd;
+                fd_ring_print (sp, stderr, "pre-pop");
+                parent_fd = i_ring_pop (&sp->fts_fd_ring);
+                if (0 <= parent_fd)
+                  {
+                    fd = parent_fd;
+                    dir = NULL;
+                  }
+              }
+          }
+
+        newfd = fd;
+        if (fd < 0 && (newfd = diropen (sp, dir)) < 0)
+          return -1;
+
+        /* The following dev/inode check is necessary if we're doing a
+           "logical" traversal (through symlinks, a la chown -L), if the
+           system lacks O_NOFOLLOW support, or if we're changing to ".."
+           (but not via a popped file descriptor).  When changing to the
+           name "..", O_NOFOLLOW can't help.  In general, when the target is
+           not "..", diropen's use of O_NOFOLLOW ensures we don't mistakenly
+           follow a symlink, so we can avoid the expense of this fstat.  */
+        if (ISSET(FTS_LOGICAL) || ! HAVE_WORKING_O_NOFOLLOW
+            || (dir && STREQ (dir, "..")))
+          {
+            struct stat sb;
+            if (fstat(newfd, &sb))
+              {
+                ret = -1;
+                goto bail;
+              }
+            if (p->fts_statp->st_dev != sb.st_dev
+                || p->fts_statp->st_ino != sb.st_ino)
+              {
+                __set_errno (ENOENT);           /* disinformation */
+                ret = -1;
+                goto bail;
+              }
+          }
+
+        if (ISSET(FTS_CWDFD))
+          {
+            cwd_advance_fd (sp, newfd, ! is_dotdot);
+            return 0;
+          }
+
+        ret = fchdir(newfd);
+bail:
+        if (fd < 0)
+          {
+            int oerrno = errno;
+            (void)close(newfd);
+            __set_errno (oerrno);
+          }
+        return ret;
+}
diff --git a/src/grep/lib/fts_.h b/src/grep/lib/fts_.h
new file mode 100644
index 0000000..13cfa30
--- /dev/null
+++ b/src/grep/lib/fts_.h
@@ -0,0 +1,271 @@
+/* Traverse a file hierarchy.
+
+   Copyright (C) 2004-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/*
+ * Copyright (c) 1989, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *      @(#)fts.h       8.3 (Berkeley) 8/14/94
+ */
+
+#ifndef _FTS_H
+# define _FTS_H 1
+
+# ifdef _LIBC
+#  include <features.h>
+#  if __STDC_VERSION__ < 199901L
+#   define __FLEXIBLE_ARRAY_MEMBER 1
+#  else
+#   define __FLEXIBLE_ARRAY_MEMBER
+#  endif
+# else
+#  define __FLEXIBLE_ARRAY_MEMBER FLEXIBLE_ARRAY_MEMBER
+#  undef __THROW
+#  define __THROW
+#  undef __BEGIN_DECLS
+#  undef __END_DECLS
+#  ifdef __cplusplus
+#   define __BEGIN_DECLS extern "C" {
+#   define __END_DECLS }
+#  else
+#   define __BEGIN_DECLS
+#   define __END_DECLS
+#  endif
+# endif
+
+# include <stddef.h>
+# include <sys/types.h>
+# include <dirent.h>
+# include <sys/stat.h>
+# include "i-ring.h"
+
+typedef struct {
+        struct _ftsent *fts_cur;        /* current node */
+        struct _ftsent *fts_child;      /* linked list of children */
+        struct _ftsent **fts_array;     /* sort array */
+        dev_t fts_dev;                  /* starting device # */
+        char *fts_path;                 /* file name for this descent */
+        int fts_rfd;                    /* fd for root */
+        int fts_cwd_fd;                 /* the file descriptor on which the
+                                           virtual cwd is open, or AT_FDCWD */
+        size_t fts_pathlen;             /* sizeof(path) */
+        size_t fts_nitems;              /* elements in the sort array */
+        int (*fts_compar) (struct _ftsent const **, struct _ftsent const **);
+                                        /* compare fn */
+
+# define FTS_COMFOLLOW  0x0001          /* follow command line symlinks */
+# define FTS_LOGICAL    0x0002          /* logical walk */
+# define FTS_NOCHDIR    0x0004          /* don't change directories */
+# define FTS_NOSTAT     0x0008          /* don't get stat info */
+# define FTS_PHYSICAL   0x0010          /* physical walk */
+# define FTS_SEEDOT     0x0020          /* return dot and dot-dot */
+# define FTS_XDEV       0x0040          /* don't cross devices */
+# define FTS_WHITEOUT   0x0080          /* return whiteout information */
+
+  /* There are two ways to detect cycles.
+     The lazy way (which works only with FTS_PHYSICAL),
+     with which one may process a directory that is a
+     part of the cycle several times before detecting the cycle.
+     The "tight" way, whereby fts uses more memory (proportional
+     to number of "active" directories, aka distance from root
+     of current tree to current directory -- see active_dir_ht)
+     to detect any cycle right away.  For example, du must use
+     this option to avoid counting disk space in a cycle multiple
+     times, but chown -R need not.
+     The default is to use the constant-memory lazy way, when possible
+     (see below).
+
+     However, with FTS_LOGICAL (when following symlinks, e.g., chown -L)
+     using lazy cycle detection is inadequate.  For example, traversing
+     a directory containing a symbolic link to a peer directory, it is
+     possible to encounter the same directory twice even though there
+     is no cycle:
+     dir
+     ...
+     slink -> dir
+     So, when FTS_LOGICAL is selected, we have to use a different
+     mode of cycle detection: FTS_TIGHT_CYCLE_CHECK.  */
+# define FTS_TIGHT_CYCLE_CHECK  0x0100
+
+  /* Use this flag to enable semantics with which the parent
+     application may be made both more efficient and more robust.
+     Whereas the default is to visit each directory in a recursive
+     traversal (via chdir), using this flag makes it so the initial
+     working directory is never changed.  Instead, these functions
+     perform the traversal via a virtual working directory, maintained
+     through the file descriptor member, fts_cwd_fd.  */
+# define FTS_CWDFD              0x0200
+
+  /* Historically, for each directory that fts initially encounters, it would
+     open it, read all entries, and stat each entry, storing the results, and
+     then it would process the first entry.  But that behavior is bad for
+     locality of reference, and also causes trouble with inode-simulating
+     file systems like FAT, CIFS, FUSE-based ones, etc., when entries from
+     their name/inode cache are flushed too early.
+     Use this flag to make fts_open and fts_read defer the stat/lstat/fststat
+     of each entry until it is actually processed.  However, note that if you
+     use this option and also specify a comparison function, that function may
+     not examine any data via fts_statp.  However, when fts_statp->st_mode is
+     nonzero, the S_IFMT type bits are valid, with mapped dirent.d_type data.
+     Of course, that happens only on file systems that provide useful
+     dirent.d_type data.  */
+# define FTS_DEFER_STAT         0x0400
+
+  /* Use this flag to disable stripping of trailing slashes
+     from input path names during fts_open initialization.  */
+# define FTS_VERBATIM   0x0800
+
+# define FTS_OPTIONMASK 0x0fff          /* valid user option mask */
+
+# define FTS_NAMEONLY   0x1000          /* (private) child names only */
+# define FTS_STOP       0x2000          /* (private) unrecoverable error */
+        int fts_options;                /* fts_open options, global flags */
+
+        /* Map a directory's device number to a boolean.  The boolean is
+           true if for that file system (type determined by a single fstatfs
+           call per FS) st_nlink can be used to calculate the number of
+           sub-directory entries in a directory.
+           Using this table is an optimization that permits us to look up
+           file system type on a per-inode basis at the minimal cost of
+           calling fstatfs only once per traversed device.  */
+        struct hash_table *fts_leaf_optimization_works_ht;
+
+        union {
+                /* This data structure is used if FTS_TIGHT_CYCLE_CHECK is
+                   specified.  It records the directories between a starting
+                   point and the current directory.  I.e., a directory is
+                   recorded here IFF we have visited it once, but we have not
+                   yet completed processing of all its entries.  Every time we
+                   visit a new directory, we add that directory to this set.
+                   When we finish with a directory (usually by visiting it a
+                   second time), we remove it from this set.  Each entry in
+                   this data structure is a device/inode pair.  This data
+                   structure is used to detect directory cycles efficiently and
+                   promptly even when the depth of a hierarchy is in the tens
+                   of thousands.  */
+                struct hash_table *ht;
+
+                /* FIXME: rename these two members to have the fts_ prefix */
+                /* This data structure uses a lazy cycle-detection algorithm,
+                   as done by rm via cycle-check.c.  It's the default,
+                   but it's not appropriate for programs like du.  */
+                struct cycle_check_state *state;
+        } fts_cycle;
+
+        /* A stack of the file descriptors corresponding to the
+           most-recently traversed parent directories.
+           Currently used only in FTS_CWDFD mode.  */
+        I_ring fts_fd_ring;
+} FTS;
+
+typedef struct _ftsent {
+        struct _ftsent *fts_cycle;      /* cycle node */
+        struct _ftsent *fts_parent;     /* parent directory */
+        struct _ftsent *fts_link;       /* next file in directory */
+        DIR *fts_dirp;                  /* Dir pointer for any directory
+                                           containing more entries than we
+                                           read at one time.  */
+        long fts_number;                /* local numeric value */
+        void *fts_pointer;              /* local address value */
+        char *fts_accpath;              /* access file name */
+        char *fts_path;                 /* root name; == fts_fts->fts_path */
+        int fts_errno;                  /* errno for this node */
+        int fts_symfd;                  /* fd for symlink */
+        size_t fts_pathlen;             /* strlen(fts_path) */
+
+        FTS *fts_fts;                   /* the file hierarchy itself */
+
+# define FTS_ROOTPARENTLEVEL    (-1)
+# define FTS_ROOTLEVEL           0
+        ptrdiff_t fts_level;            /* depth (-1 to N) */
+
+        size_t fts_namelen;             /* strlen(fts_name) */
+
+# define FTS_D           1              /* preorder directory */
+# define FTS_DC          2              /* directory that causes cycles */
+# define FTS_DEFAULT     3              /* none of the above */
+# define FTS_DNR         4              /* unreadable directory */
+# define FTS_DOT         5              /* dot or dot-dot */
+# define FTS_DP          6              /* postorder directory */
+# define FTS_ERR         7              /* error; errno is set */
+# define FTS_F           8              /* regular file */
+# define FTS_INIT        9              /* initialized only */
+# define FTS_NS         10              /* stat(2) failed */
+# define FTS_NSOK       11              /* no stat(2) requested */
+# define FTS_SL         12              /* symbolic link */
+# define FTS_SLNONE     13              /* symbolic link without target */
+# define FTS_W          14              /* whiteout object */
+        unsigned short int fts_info;    /* user flags for FTSENT structure */
+
+# define FTS_DONTCHDIR   0x01           /* don't chdir .. to the parent */
+# define FTS_SYMFOLLOW   0x02           /* followed a symlink to get here */
+        unsigned short int fts_flags;   /* private flags for FTSENT structure */
+
+# define FTS_AGAIN       1              /* read node again */
+# define FTS_FOLLOW      2              /* follow symbolic link */
+# define FTS_NOINSTR     3              /* no instructions */
+# define FTS_SKIP        4              /* discard node */
+        unsigned short int fts_instr;   /* fts_set() instructions */
+
+        struct stat fts_statp[1];       /* stat(2) information */
+        char fts_name[__FLEXIBLE_ARRAY_MEMBER]; /* file name */
+} FTSENT;
+
+__BEGIN_DECLS
+
+ _GL_ATTRIBUTE_NODISCARD
+FTSENT  *fts_children (FTS *, int) __THROW;
+
+_GL_ATTRIBUTE_NODISCARD
+int      fts_close (FTS *) __THROW;
+
+_GL_ATTRIBUTE_NODISCARD
+FTS     *fts_open (char * const *, int,
+                   int (*)(const FTSENT **, const FTSENT **))
+  _GL_ATTRIBUTE_DEALLOC (fts_close, 1) __THROW;
+
+_GL_ATTRIBUTE_NODISCARD
+FTSENT  *fts_read (FTS *) __THROW;
+
+int      fts_set (FTS *, FTSENT *, int) __THROW;
+__END_DECLS
+
+#endif /* fts.h */
diff --git a/src/grep/lib/getcwd-lgpl.c b/src/grep/lib/getcwd-lgpl.c
new file mode 100644
index 0000000..a9dd848
--- /dev/null
+++ b/src/grep/lib/getcwd-lgpl.c
@@ -0,0 +1,127 @@
+/* Copyright (C) 2011-2021 Free Software Foundation, Inc.
+   This file is part of gnulib.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification */
+#include <unistd.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if GNULIB_GETCWD
+/* Favor GPL getcwd.c if both getcwd and getcwd-lgpl modules are in use.  */
+typedef int dummy;
+#else
+
+/* Get the name of the current working directory, and put it in SIZE
+   bytes of BUF.  Returns NULL if the directory couldn't be determined
+   (perhaps because the absolute name was longer than PATH_MAX, or
+   because of missing read/search permissions on parent directories)
+   or SIZE was too small.  If successful, returns BUF.  If BUF is
+   NULL, an array is allocated with 'malloc'; the array is SIZE bytes
+   long, unless SIZE == 0, in which case it is as big as
+   necessary.  */
+
+# undef getcwd
+# if defined _WIN32 && !defined __CYGWIN__
+#  define getcwd _getcwd
+# endif
+
+char *
+rpl_getcwd (char *buf, size_t size)
+{
+  char *ptr;
+  char *result;
+
+  /* Handle single size operations.  */
+  if (buf)
+    {
+      if (!size)
+        {
+          errno = EINVAL;
+          return NULL;
+        }
+      return getcwd (buf, size);
+    }
+
+  if (size)
+    {
+      buf = malloc (size);
+      if (!buf)
+        {
+          errno = ENOMEM;
+          return NULL;
+        }
+      result = getcwd (buf, size);
+      if (!result)
+        free (buf);
+      return result;
+    }
+
+  /* Flexible sizing requested.  Avoid over-allocation for the common
+     case of a name that fits within a 4k page, minus some space for
+     local variables, to be sure we don't skip over a guard page.  */
+  {
+    char tmp[4032];
+    size = sizeof tmp;
+    ptr = getcwd (tmp, size);
+    if (ptr)
+      {
+        result = strdup (ptr);
+        if (!result)
+          errno = ENOMEM;
+        return result;
+      }
+    if (errno != ERANGE)
+      return NULL;
+  }
+
+  /* My what a large directory name we have.  */
+  do
+    {
+      size <<= 1;
+      ptr = realloc (buf, size);
+      if (ptr == NULL)
+        {
+          free (buf);
+          errno = ENOMEM;
+          return NULL;
+        }
+      buf = ptr;
+      result = getcwd (buf, size);
+    }
+  while (!result && errno == ERANGE);
+
+  if (!result)
+    free (buf);
+  else
+    {
+      /* Here result == buf.  */
+      /* Shrink result before returning it.  */
+      size_t actual_size = strlen (result) + 1;
+      if (actual_size < size)
+        {
+          char *shrinked_result = realloc (result, actual_size);
+          if (shrinked_result != NULL)
+            result = shrinked_result;
+        }
+    }
+  return result;
+}
+
+#endif
diff --git a/src/grep/lib/getdtablesize.c b/src/grep/lib/getdtablesize.c
new file mode 100644
index 0000000..5006c2d
--- /dev/null
+++ b/src/grep/lib/getdtablesize.c
@@ -0,0 +1,124 @@
+/* getdtablesize() function: Return maximum possible file descriptor value + 1.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+
+# include <stdio.h>
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+#  include "msvc-inval.h"
+# endif
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static int
+_setmaxstdio_nothrow (int newmax)
+{
+  int result;
+
+  TRY_MSVC_INVAL
+    {
+      result = _setmaxstdio (newmax);
+    }
+  CATCH_MSVC_INVAL
+    {
+      result = -1;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+# else
+#  define _setmaxstdio_nothrow _setmaxstdio
+# endif
+
+/* Cache for the previous getdtablesize () result.  Safe to cache because
+   Windows also lacks setrlimit.  */
+static int dtablesize;
+
+int
+getdtablesize (void)
+{
+  if (dtablesize == 0)
+    {
+      /* We are looking for the number N such that the valid file descriptors
+         are 0..N-1.  It can be obtained through a loop as follows:
+           {
+             int fd;
+             for (fd = 3; fd < 65536; fd++)
+               if (dup2 (0, fd) == -1)
+                 break;
+             return fd;
+           }
+         On Windows XP, the result is 2048.
+         The drawback of this loop is that it allocates memory for a libc
+         internal array that is never freed.
+
+         The number N can also be obtained as the upper bound for
+         _getmaxstdio ().  _getmaxstdio () returns the maximum number of open
+         FILE objects.  The sanity check in _setmaxstdio reveals the maximum
+         number of file descriptors.  This too allocates memory, but it is
+         freed when we call _setmaxstdio with the original value.  */
+      int orig_max_stdio = _getmaxstdio ();
+      unsigned int bound;
+      for (bound = 0x10000; _setmaxstdio_nothrow (bound) < 0; bound = bound / 2)
+        ;
+      _setmaxstdio_nothrow (orig_max_stdio);
+      dtablesize = bound;
+    }
+  return dtablesize;
+}
+
+#else
+
+# include <limits.h>
+# include <sys/resource.h>
+
+# ifndef RLIM_SAVED_CUR
+#  define RLIM_SAVED_CUR RLIM_INFINITY
+# endif
+# ifndef RLIM_SAVED_MAX
+#  define RLIM_SAVED_MAX RLIM_INFINITY
+# endif
+
+# ifdef __CYGWIN__
+  /* Cygwin 1.7.25 auto-increases the RLIMIT_NOFILE soft limit until it
+     hits the compile-time constant hard limit of 3200.  We might as
+     well just report the hard limit.  */
+#  define rlim_cur rlim_max
+# endif
+
+int
+getdtablesize (void)
+{
+  struct rlimit lim;
+
+  if (getrlimit (RLIMIT_NOFILE, &lim) == 0
+      && 0 <= lim.rlim_cur && lim.rlim_cur <= INT_MAX
+      && lim.rlim_cur != RLIM_INFINITY
+      && lim.rlim_cur != RLIM_SAVED_CUR
+      && lim.rlim_cur != RLIM_SAVED_MAX)
+    return lim.rlim_cur;
+
+  return INT_MAX;
+}
+
+#endif
diff --git a/src/grep/lib/getopt-cdefs.in.h b/src/grep/lib/getopt-cdefs.in.h
new file mode 100644
index 0000000..33e3d4b
--- /dev/null
+++ b/src/grep/lib/getopt-cdefs.in.h
@@ -0,0 +1,66 @@
+/* getopt-on-non-glibc compatibility macros.
+   Copyright (C) 1989-2021 Free Software Foundation, Inc.
+   This file is part of gnulib.
+   Unlike most of the getopt implementation, it is NOT shared
+   with the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_CDEFS_H
+#define _GETOPT_CDEFS_H 1
+
+/* This header should not be used directly; include getopt.h or
+   unistd.h instead.  It does not have a protective #error, because
+   the guard macro for getopt.h in gnulib is not fixed.  */
+
+/* getopt-core.h and getopt-ext.h are shared with GNU libc, and expect
+   a number of the internal macros supplied to GNU libc's headers by
+   sys/cdefs.h.  Provide fallback definitions for all of them.  */
+#if @HAVE_SYS_CDEFS_H@
+# include <sys/cdefs.h>
+#endif
+
+#ifndef __BEGIN_DECLS
+# ifdef __cplusplus
+#  define __BEGIN_DECLS extern "C" {
+# else
+#  define __BEGIN_DECLS /* nothing */
+# endif
+#endif
+#ifndef __END_DECLS
+# ifdef __cplusplus
+#  define __END_DECLS }
+# else
+#  define __END_DECLS /* nothing */
+# endif
+#endif
+
+#ifndef __GNUC_PREREQ
+# if defined __GNUC__ && defined __GNUC_VERSION__
+# define __GNUC_PREREQ(maj, min) \
+        ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+# else
+#  define __GNUC_PREREQ(maj, min) 0
+# endif
+#endif
+
+#ifndef __THROW
+# if defined __cplusplus && (__GNUC_PREREQ (2,8) || __clang_major__ >= 4)
+#  define __THROW       throw ()
+# else
+#  define __THROW
+# endif
+#endif
+
+#endif /* _GETOPT_CDEFS_H */
diff --git a/src/grep/lib/getopt-core.h b/src/grep/lib/getopt-core.h
new file mode 100644
index 0000000..ceb14d0
--- /dev/null
+++ b/src/grep/lib/getopt-core.h
@@ -0,0 +1,96 @@
+/* Declarations for getopt (basic, portable features only).
+   Copyright (C) 1989-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library and is also part of gnulib.
+   Patches to this file should be submitted to both projects.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_CORE_H
+#define _GETOPT_CORE_H 1
+
+/* This header should not be used directly; include getopt.h or
+   unistd.h instead.  Unlike most bits headers, it does not have
+   a protective #error, because the guard macro for getopt.h in
+   gnulib is not fixed.  */
+
+__BEGIN_DECLS
+
+/* For communication from 'getopt' to the caller.
+   When 'getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when 'ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+extern char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to 'getopt'.
+
+   On entry to 'getopt', zero means this is the first call; initialize.
+
+   When 'getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, 'optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+extern int optind;
+
+/* Callers store zero here to inhibit the error message 'getopt' prints
+   for unrecognized options.  */
+
+extern int opterr;
+
+/* Set to an option character which was unrecognized.  */
+
+extern int optopt;
+
+/* Get definitions and prototypes for functions to process the
+   arguments in ARGV (ARGC of them, minus the program name) for
+   options given in OPTS.
+
+   Return the option character from OPTS just read.  Return -1 when
+   there are no more options.  For unrecognized options, or options
+   missing arguments, 'optopt' is set to the option letter, and '?' is
+   returned.
+
+   The OPTS string is a list of characters which are recognized option
+   letters, optionally followed by colons, specifying that that letter
+   takes an argument, to be placed in 'optarg'.
+
+   If a letter in OPTS is followed by two colons, its argument is
+   optional.  This behavior is specific to the GNU 'getopt'.
+
+   The argument '--' causes premature termination of argument
+   scanning, explicitly telling 'getopt' that there are no more
+   options.
+
+   If OPTS begins with '-', then non-option arguments are treated as
+   arguments to the option '\1'.  This behavior is specific to the GNU
+   'getopt'.  If OPTS begins with '+', or POSIXLY_CORRECT is set in
+   the environment, then do not permute arguments.
+
+   For standards compliance, the 'argv' argument has the type
+   char *const *, but this is inaccurate; if argument permutation is
+   enabled, the argv array (not the strings it points to) must be
+   writable.  */
+
+extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
+       __THROW _GL_ARG_NONNULL ((2, 3));
+
+__END_DECLS
+
+#endif /* _GETOPT_CORE_H */
diff --git a/src/grep/lib/getopt-ext.h b/src/grep/lib/getopt-ext.h
new file mode 100644
index 0000000..f82a8c6
--- /dev/null
+++ b/src/grep/lib/getopt-ext.h
@@ -0,0 +1,77 @@
+/* Declarations for getopt (GNU extensions).
+   Copyright (C) 1989-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library and is also part of gnulib.
+   Patches to this file should be submitted to both projects.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_EXT_H
+#define _GETOPT_EXT_H 1
+
+/* This header should not be used directly; include getopt.h instead.
+   Unlike most bits headers, it does not have a protective #error,
+   because the guard macro for getopt.h in gnulib is not fixed.  */
+
+__BEGIN_DECLS
+
+/* Describe the long-named options requested by the application.
+   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+   of 'struct option' terminated by an element containing a name which is
+   zero.
+
+   The field 'has_arg' is:
+   no_argument		(or 0) if the option does not take an argument,
+   required_argument	(or 1) if the option requires an argument,
+   optional_argument 	(or 2) if the option takes an optional argument.
+
+   If the field 'flag' is not NULL, it points to a variable that is set
+   to the value given in the field 'val' when the option is found, but
+   left unchanged if the option is not found.
+
+   To have a long-named option do something other than set an 'int' to
+   a compiled-in constant, such as set a value from 'optarg', set the
+   option's 'flag' field to zero and its 'val' field to a nonzero
+   value (the equivalent single-letter option character, if there is
+   one).  For long options that have a zero 'flag' field, 'getopt'
+   returns the contents of the 'val' field.  */
+
+struct option
+{
+  const char *name;
+  /* has_arg can't be an enum because some compilers complain about
+     type mismatches in all the code that assumes it is an int.  */
+  int has_arg;
+  int *flag;
+  int val;
+};
+
+/* Names for the values of the 'has_arg' field of 'struct option'.  */
+
+#define no_argument		0
+#define required_argument	1
+#define optional_argument	2
+
+extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
+			const char *__shortopts,
+		        const struct option *__longopts, int *__longind)
+       __THROW _GL_ARG_NONNULL ((2, 3));
+extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
+			     const char *__shortopts,
+		             const struct option *__longopts, int *__longind)
+       __THROW _GL_ARG_NONNULL ((2, 3));
+
+__END_DECLS
+
+#endif /* _GETOPT_EXT_H */
diff --git a/src/grep/lib/getopt-pfx-core.h b/src/grep/lib/getopt-pfx-core.h
new file mode 100644
index 0000000..b1733a3
--- /dev/null
+++ b/src/grep/lib/getopt-pfx-core.h
@@ -0,0 +1,66 @@
+/* getopt (basic, portable features) gnulib wrapper header.
+   Copyright (C) 1989-2021 Free Software Foundation, Inc.
+   This file is part of gnulib.
+   Unlike most of the getopt implementation, it is NOT shared
+   with the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_PFX_CORE_H
+#define _GETOPT_PFX_CORE_H 1
+
+/* This header should not be used directly; include getopt.h or
+   unistd.h instead.  It does not have a protective #error, because
+   the guard macro for getopt.h in gnulib is not fixed.  */
+
+/* Standalone applications should #define __GETOPT_PREFIX to an
+   identifier that prefixes the external functions and variables
+   defined in getopt-core.h and getopt-ext.h.  Systematically
+   rename identifiers so that they do not collide with the system
+   functions and variables.  Renaming avoids problems with some
+   compilers and linkers.  */
+#ifdef __GETOPT_PREFIX
+# ifndef __GETOPT_ID
+#  define __GETOPT_CONCAT(x, y) x ## y
+#  define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
+#  define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
+# endif
+# undef getopt
+# undef optarg
+# undef opterr
+# undef optind
+# undef optopt
+# define getopt __GETOPT_ID (getopt)
+# define optarg __GETOPT_ID (optarg)
+# define opterr __GETOPT_ID (opterr)
+# define optind __GETOPT_ID (optind)
+# define optopt __GETOPT_ID (optopt)
+
+/* Work around a a problem on macOS, which declares getopt with a
+   trailing __DARWIN_ALIAS(getopt) that would expand to something like
+   __asm("_" "rpl_getopt" "$UNIX2003") were it not for the following
+   hack to suppress the macOS declaration <https://bugs.gnu.org/40205>.  */
+# ifdef __APPLE__
+#  define _GETOPT
+# endif
+
+/* The system's getopt.h may have already included getopt-core.h to
+   declare the unprefixed identifiers.  Undef _GETOPT_CORE_H so that
+   getopt-core.h declares them with prefixes.  */
+# undef _GETOPT_CORE_H
+#endif
+
+#include <getopt-core.h>
+
+#endif /* _GETOPT_PFX_CORE_H */
diff --git a/src/grep/lib/getopt-pfx-ext.h b/src/grep/lib/getopt-pfx-ext.h
new file mode 100644
index 0000000..b9a14ba
--- /dev/null
+++ b/src/grep/lib/getopt-pfx-ext.h
@@ -0,0 +1,70 @@
+/* getopt (GNU extensions) gnulib wrapper header.
+   Copyright (C) 1989-2021 Free Software Foundation, Inc.
+   This file is part of gnulib.
+   Unlike most of the getopt implementation, it is NOT shared
+   with the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_PFX_EXT_H
+#define _GETOPT_PFX_EXT_H 1
+
+/* This header should not be used directly; include getopt.h instead.
+   It does not have a protective #error, because the guard macro for
+   getopt.h in gnulib is not fixed.  */
+
+/* Standalone applications should #define __GETOPT_PREFIX to an
+   identifier that prefixes the external functions and variables
+   defined in getopt-core.h and getopt-ext.h.  Systematically
+   rename identifiers so that they do not collide with the system
+   functions and variables.  Renaming avoids problems with some
+   compilers and linkers.  */
+#ifdef __GETOPT_PREFIX
+# ifndef __GETOPT_ID
+#  define __GETOPT_CONCAT(x, y) x ## y
+#  define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
+#  define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
+# endif
+# undef getopt_long
+# undef getopt_long_only
+# undef option
+# undef _getopt_internal
+# define getopt_long __GETOPT_ID (getopt_long)
+# define getopt_long_only __GETOPT_ID (getopt_long_only)
+# define option __GETOPT_ID (option)
+# define _getopt_internal __GETOPT_ID (getopt_internal)
+
+/* The system's getopt.h may have already included getopt-ext.h to
+   declare the unprefixed identifiers.  Undef _GETOPT_EXT_H so that
+   getopt-ext.h declares them with prefixes.  */
+# undef _GETOPT_EXT_H
+#endif
+
+/* Standalone applications get correct prototypes for getopt_long and
+   getopt_long_only; they declare "char **argv".  For backward
+   compatibility with old applications, if __GETOPT_PREFIX is not
+   defined, we supply GNU-libc-compatible, but incorrect, prototypes
+   using "char *const *argv".  (GNU libc is stuck with the incorrect
+   prototypes, as they are baked into older versions of LSB.)  */
+#ifndef __getopt_argv_const
+# if defined __GETOPT_PREFIX
+#  define __getopt_argv_const /* empty */
+# else
+#  define __getopt_argv_const const
+# endif
+#endif
+
+#include <getopt-ext.h>
+
+#endif /* _GETOPT_PFX_EXT_H */
diff --git a/src/grep/lib/getopt.c b/src/grep/lib/getopt.c
new file mode 100644
index 0000000..b106989
--- /dev/null
+++ b/src/grep/lib/getopt.c
@@ -0,0 +1,811 @@
+/* Getopt for GNU.
+   Copyright (C) 1987-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library and is also part of gnulib.
+   Patches to this file should be submitted to both projects.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <config.h>
+#endif
+
+#include "getopt.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifdef _LIBC
+/* When used as part of glibc, error printing must be done differently
+   for standards compliance.  getopt is not a cancellation point, so
+   it must not call functions that are, and it is specified by an
+   older standard than stdio locking, so it must not refer to
+   functions in the "user namespace" related to stdio locking.
+   Finally, it must use glibc's internal message translation so that
+   the messages are looked up in the proper text domain.  */
+# include <libintl.h>
+# define fprintf __fxprintf_nocancel
+# define flockfile(fp) _IO_flockfile (fp)
+# define funlockfile(fp) _IO_funlockfile (fp)
+#else
+# include "gettext.h"
+# define _(msgid) gettext (msgid)
+/* When used standalone, flockfile and funlockfile might not be
+   available.  */
+# if (!defined _POSIX_THREAD_SAFE_FUNCTIONS \
+      || (defined _WIN32 && ! defined __CYGWIN__))
+#  define flockfile(fp) /* nop */
+#  define funlockfile(fp) /* nop */
+# endif
+/* When used standalone, do not attempt to use alloca.  */
+# define __libc_use_alloca(size) 0
+# undef alloca
+# define alloca(size) (abort (), (void *)0)
+#endif
+
+/* This implementation of 'getopt' has three modes for handling
+   options interspersed with non-option arguments.  It can stop
+   scanning for options at the first non-option argument encountered,
+   as POSIX specifies.  It can continue scanning for options after the
+   first non-option argument, but permute 'argv' as it goes so that,
+   after 'getopt' is done, all the options precede all the non-option
+   arguments and 'optind' points to the first non-option argument.
+   Or, it can report non-option arguments as if they were arguments to
+   the option character '\x01'.
+
+   The default behavior of 'getopt_long' is to permute the argument list.
+   When this implementation is used standalone, the default behavior of
+   'getopt' is to stop at the first non-option argument, but when it is
+   used as part of GNU libc it also permutes the argument list.  In both
+   cases, setting the environment variable POSIXLY_CORRECT to any value
+   disables permutation.
+
+   If the first character of the OPTSTRING argument to 'getopt' or
+   'getopt_long' is '+', both functions will stop at the first
+   non-option argument.  If it is '-', both functions will report
+   non-option arguments as arguments to the option character '\x01'.  */
+
+#include "getopt_int.h"
+
+/* For communication from 'getopt' to the caller.
+   When 'getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when 'ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to 'getopt'.
+
+   On entry to 'getopt', zero means this is the first call; initialize.
+
+   When 'getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, 'optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+/* 1003.2 says this must be 1 before any call.  */
+int optind = 1;
+
+/* Callers store zero here to inhibit the error message
+   for unrecognized options.  */
+
+int opterr = 1;
+
+/* Set to an option character which was unrecognized.
+   This must be initialized on some systems to avoid linking in the
+   system's own getopt implementation.  */
+
+int optopt = '?';
+
+/* Keep a global copy of all internal members of getopt_data.  */
+
+static struct _getopt_data getopt_data;
+
+/* Exchange two adjacent subsequences of ARGV.
+   One subsequence is elements [first_nonopt,last_nonopt)
+   which contains all the non-options that have been skipped so far.
+   The other is elements [last_nonopt,optind), which contains all
+   the options processed since those non-options were skipped.
+
+   'first_nonopt' and 'last_nonopt' are relocated so that they describe
+   the new indices of the non-options in ARGV after they are moved.  */
+
+static void
+exchange (char **argv, struct _getopt_data *d)
+{
+  int bottom = d->__first_nonopt;
+  int middle = d->__last_nonopt;
+  int top = d->optind;
+  char *tem;
+
+  /* Exchange the shorter segment with the far end of the longer segment.
+     That puts the shorter segment into the right place.
+     It leaves the longer segment in the right place overall,
+     but it consists of two parts that need to be swapped next.  */
+
+  while (top > middle && middle > bottom)
+    {
+      if (top - middle > middle - bottom)
+	{
+	  /* Bottom segment is the short one.  */
+	  int len = middle - bottom;
+	  int i;
+
+	  /* Swap it with the top part of the top segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[top - (middle - bottom) + i];
+	      argv[top - (middle - bottom) + i] = tem;
+	    }
+	  /* Exclude the moved bottom segment from further swapping.  */
+	  top -= len;
+	}
+      else
+	{
+	  /* Top segment is the short one.  */
+	  int len = top - middle;
+	  int i;
+
+	  /* Swap it with the bottom part of the bottom segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[middle + i];
+	      argv[middle + i] = tem;
+	    }
+	  /* Exclude the moved top segment from further swapping.  */
+	  bottom += len;
+	}
+    }
+
+  /* Update records for the slots the non-options now occupy.  */
+
+  d->__first_nonopt += (d->optind - d->__last_nonopt);
+  d->__last_nonopt = d->optind;
+}
+
+/* Process the argument starting with d->__nextchar as a long option.
+   d->optind should *not* have been advanced over this argument.
+
+   If the value returned is -1, it was not actually a long option, the
+   state is unchanged, and the argument should be processed as a set
+   of short options (this can only happen when long_only is true).
+   Otherwise, the option (and its argument, if any) have been consumed
+   and the return value is the value to return from _getopt_internal_r.  */
+static int
+process_long_option (int argc, char **argv, const char *optstring,
+		     const struct option *longopts, int *longind,
+		     int long_only, struct _getopt_data *d,
+		     int print_errors, const char *prefix)
+{
+  char *nameend;
+  size_t namelen;
+  const struct option *p;
+  const struct option *pfound = NULL;
+  int n_options;
+  int option_index;
+
+  for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++)
+    /* Do nothing.  */ ;
+  namelen = nameend - d->__nextchar;
+
+  /* First look for an exact match, counting the options as a side
+     effect.  */
+  for (p = longopts, n_options = 0; p->name; p++, n_options++)
+    if (!strncmp (p->name, d->__nextchar, namelen)
+	&& namelen == strlen (p->name))
+      {
+	/* Exact match found.  */
+	pfound = p;
+	option_index = n_options;
+	break;
+      }
+
+  if (pfound == NULL)
+    {
+      /* Didn't find an exact match, so look for abbreviations.  */
+      unsigned char *ambig_set = NULL;
+      int ambig_malloced = 0;
+      int ambig_fallback = 0;
+      int indfound = -1;
+
+      for (p = longopts, option_index = 0; p->name; p++, option_index++)
+	if (!strncmp (p->name, d->__nextchar, namelen))
+	  {
+	    if (pfound == NULL)
+	      {
+		/* First nonexact match found.  */
+		pfound = p;
+		indfound = option_index;
+	      }
+	    else if (long_only
+		     || pfound->has_arg != p->has_arg
+		     || pfound->flag != p->flag
+		     || pfound->val != p->val)
+	      {
+		/* Second or later nonexact match found.  */
+		if (!ambig_fallback)
+		  {
+		    if (!print_errors)
+		      /* Don't waste effort tracking the ambig set if
+			 we're not going to print it anyway.  */
+		      ambig_fallback = 1;
+		    else if (!ambig_set)
+		      {
+			if (__libc_use_alloca (n_options))
+			  ambig_set = alloca (n_options);
+			else if ((ambig_set = malloc (n_options)) == NULL)
+			  /* Fall back to simpler error message.  */
+			  ambig_fallback = 1;
+			else
+			  ambig_malloced = 1;
+
+			if (ambig_set)
+			  {
+			    memset (ambig_set, 0, n_options);
+			    ambig_set[indfound] = 1;
+			  }
+		      }
+		    if (ambig_set)
+		      ambig_set[option_index] = 1;
+		  }
+	      }
+	  }
+
+      if (ambig_set || ambig_fallback)
+	{
+	  if (print_errors)
+	    {
+	      if (ambig_fallback)
+		fprintf (stderr, _("%s: option '%s%s' is ambiguous\n"),
+			 argv[0], prefix, d->__nextchar);
+	      else
+		{
+		  flockfile (stderr);
+		  fprintf (stderr,
+			   _("%s: option '%s%s' is ambiguous; possibilities:"),
+			   argv[0], prefix, d->__nextchar);
+
+		  for (option_index = 0; option_index < n_options; option_index++)
+		    if (ambig_set[option_index])
+		      fprintf (stderr, " '%s%s'",
+			       prefix, longopts[option_index].name);
+
+		  /* This must use 'fprintf' even though it's only
+		     printing a single character, so that it goes through
+		     __fxprintf_nocancel when compiled as part of glibc.  */
+		  fprintf (stderr, "\n");
+		  funlockfile (stderr);
+		}
+	    }
+	  if (ambig_malloced)
+	    free (ambig_set);
+	  d->__nextchar += strlen (d->__nextchar);
+	  d->optind++;
+	  d->optopt = 0;
+	  return '?';
+	}
+
+      option_index = indfound;
+    }
+
+  if (pfound == NULL)
+    {
+      /* Can't find it as a long option.  If this is not getopt_long_only,
+	 or the option starts with '--' or is not a valid short option,
+	 then it's an error.  */
+      if (!long_only || argv[d->optind][1] == '-'
+	  || strchr (optstring, *d->__nextchar) == NULL)
+	{
+	  if (print_errors)
+	    fprintf (stderr, _("%s: unrecognized option '%s%s'\n"),
+		     argv[0], prefix, d->__nextchar);
+
+	  d->__nextchar = NULL;
+	  d->optind++;
+	  d->optopt = 0;
+	  return '?';
+	}
+
+      /* Otherwise interpret it as a short option.  */
+      return -1;
+    }
+
+  /* We have found a matching long option.  Consume it.  */
+  d->optind++;
+  d->__nextchar = NULL;
+  if (*nameend)
+    {
+      /* Don't test has_arg with >, because some C compilers don't
+	 allow it to be used on enums.  */
+      if (pfound->has_arg)
+	d->optarg = nameend + 1;
+      else
+	{
+	  if (print_errors)
+	    fprintf (stderr,
+		     _("%s: option '%s%s' doesn't allow an argument\n"),
+		     argv[0], prefix, pfound->name);
+
+	  d->optopt = pfound->val;
+	  return '?';
+	}
+    }
+  else if (pfound->has_arg == 1)
+    {
+      if (d->optind < argc)
+	d->optarg = argv[d->optind++];
+      else
+	{
+	  if (print_errors)
+	    fprintf (stderr,
+		     _("%s: option '%s%s' requires an argument\n"),
+		     argv[0], prefix, pfound->name);
+
+	  d->optopt = pfound->val;
+	  return optstring[0] == ':' ? ':' : '?';
+	}
+    }
+
+  if (longind != NULL)
+    *longind = option_index;
+  if (pfound->flag)
+    {
+      *(pfound->flag) = pfound->val;
+      return 0;
+    }
+  return pfound->val;
+}
+
+/* Initialize internal data upon the first call to getopt.  */
+
+static const char *
+_getopt_initialize (int argc _GL_UNUSED,
+		    char **argv _GL_UNUSED, const char *optstring,
+		    struct _getopt_data *d, int posixly_correct)
+{
+  /* Start processing options with ARGV-element 1 (since ARGV-element 0
+     is the program name); the sequence of previously skipped
+     non-option ARGV-elements is empty.  */
+  if (d->optind == 0)
+    d->optind = 1;
+
+  d->__first_nonopt = d->__last_nonopt = d->optind;
+  d->__nextchar = NULL;
+
+  /* Determine how to handle the ordering of options and nonoptions.  */
+  if (optstring[0] == '-')
+    {
+      d->__ordering = RETURN_IN_ORDER;
+      ++optstring;
+    }
+  else if (optstring[0] == '+')
+    {
+      d->__ordering = REQUIRE_ORDER;
+      ++optstring;
+    }
+  else if (posixly_correct || !!getenv ("POSIXLY_CORRECT"))
+    d->__ordering = REQUIRE_ORDER;
+  else
+    d->__ordering = PERMUTE;
+
+  d->__initialized = 1;
+  return optstring;
+}
+
+/* Scan elements of ARGV (whose length is ARGC) for option characters
+   given in OPTSTRING.
+
+   If an element of ARGV starts with '-', and is not exactly "-" or "--",
+   then it is an option element.  The characters of this element
+   (aside from the initial '-') are option characters.  If 'getopt'
+   is called repeatedly, it returns successively each of the option characters
+   from each of the option elements.
+
+   If 'getopt' finds another option character, it returns that character,
+   updating 'optind' and 'nextchar' so that the next call to 'getopt' can
+   resume the scan with the following option character or ARGV-element.
+
+   If there are no more option characters, 'getopt' returns -1.
+   Then 'optind' is the index in ARGV of the first ARGV-element
+   that is not an option.  (The ARGV-elements have been permuted
+   so that those that are not options now come last.)
+
+   OPTSTRING is a string containing the legitimate option characters.
+   If an option character is seen that is not listed in OPTSTRING,
+   return '?' after printing an error message.  If you set 'opterr' to
+   zero, the error message is suppressed but we still return '?'.
+
+   If a char in OPTSTRING is followed by a colon, that means it wants an arg,
+   so the following text in the same ARGV-element, or the text of the following
+   ARGV-element, is returned in 'optarg'.  Two colons mean an option that
+   wants an optional arg; if there is text in the current ARGV-element,
+   it is returned in 'optarg', otherwise 'optarg' is set to zero.
+
+   If OPTSTRING starts with '-' or '+', it requests different methods of
+   handling the non-option ARGV-elements.
+   See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
+
+   Long-named options begin with '--' instead of '-'.
+   Their names may be abbreviated as long as the abbreviation is unique
+   or is an exact match for some defined option.  If they have an
+   argument, it follows the option name in the same ARGV-element, separated
+   from the option name by a '=', or else the in next ARGV-element.
+   When 'getopt' finds a long-named option, it returns 0 if that option's
+   'flag' field is nonzero, the value of the option's 'val' field
+   if the 'flag' field is zero.
+
+   The elements of ARGV aren't really const, because we permute them.
+   But we pretend they're const in the prototype to be compatible
+   with other systems.
+
+   LONGOPTS is a vector of 'struct option' terminated by an
+   element containing a name which is zero.
+
+   LONGIND returns the index in LONGOPT of the long-named option found.
+   It is only valid when a long-named option has been found by the most
+   recent call.
+
+   If LONG_ONLY is nonzero, '-' as well as '--' can introduce
+   long-named options.  */
+
+int
+_getopt_internal_r (int argc, char **argv, const char *optstring,
+		    const struct option *longopts, int *longind,
+		    int long_only, struct _getopt_data *d, int posixly_correct)
+{
+  int print_errors = d->opterr;
+
+  if (argc < 1)
+    return -1;
+
+  d->optarg = NULL;
+
+  if (d->optind == 0 || !d->__initialized)
+    optstring = _getopt_initialize (argc, argv, optstring, d, posixly_correct);
+  else if (optstring[0] == '-' || optstring[0] == '+')
+    optstring++;
+
+  if (optstring[0] == ':')
+    print_errors = 0;
+
+  /* Test whether ARGV[optind] points to a non-option argument.  */
+#define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')
+
+  if (d->__nextchar == NULL || *d->__nextchar == '\0')
+    {
+      /* Advance to the next ARGV-element.  */
+
+      /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
+	 moved back by the user (who may also have changed the arguments).  */
+      if (d->__last_nonopt > d->optind)
+	d->__last_nonopt = d->optind;
+      if (d->__first_nonopt > d->optind)
+	d->__first_nonopt = d->optind;
+
+      if (d->__ordering == PERMUTE)
+	{
+	  /* If we have just processed some options following some non-options,
+	     exchange them so that the options come first.  */
+
+	  if (d->__first_nonopt != d->__last_nonopt
+	      && d->__last_nonopt != d->optind)
+	    exchange (argv, d);
+	  else if (d->__last_nonopt != d->optind)
+	    d->__first_nonopt = d->optind;
+
+	  /* Skip any additional non-options
+	     and extend the range of non-options previously skipped.  */
+
+	  while (d->optind < argc && NONOPTION_P)
+	    d->optind++;
+	  d->__last_nonopt = d->optind;
+	}
+
+      /* The special ARGV-element '--' means premature end of options.
+	 Skip it like a null option,
+	 then exchange with previous non-options as if it were an option,
+	 then skip everything else like a non-option.  */
+
+      if (d->optind != argc && !strcmp (argv[d->optind], "--"))
+	{
+	  d->optind++;
+
+	  if (d->__first_nonopt != d->__last_nonopt
+	      && d->__last_nonopt != d->optind)
+	    exchange (argv, d);
+	  else if (d->__first_nonopt == d->__last_nonopt)
+	    d->__first_nonopt = d->optind;
+	  d->__last_nonopt = argc;
+
+	  d->optind = argc;
+	}
+
+      /* If we have done all the ARGV-elements, stop the scan
+	 and back over any non-options that we skipped and permuted.  */
+
+      if (d->optind == argc)
+	{
+	  /* Set the next-arg-index to point at the non-options
+	     that we previously skipped, so the caller will digest them.  */
+	  if (d->__first_nonopt != d->__last_nonopt)
+	    d->optind = d->__first_nonopt;
+	  return -1;
+	}
+
+      /* If we have come to a non-option and did not permute it,
+	 either stop the scan or describe it to the caller and pass it by.  */
+
+      if (NONOPTION_P)
+	{
+	  if (d->__ordering == REQUIRE_ORDER)
+	    return -1;
+	  d->optarg = argv[d->optind++];
+	  return 1;
+	}
+
+      /* We have found another option-ARGV-element.
+	 Check whether it might be a long option.  */
+      if (longopts)
+	{
+	  if (argv[d->optind][1] == '-')
+	    {
+	      /* "--foo" is always a long option.  The special option
+		 "--" was handled above.  */
+	      d->__nextchar = argv[d->optind] + 2;
+	      return process_long_option (argc, argv, optstring, longopts,
+					  longind, long_only, d,
+					  print_errors, "--");
+	    }
+
+	  /* If long_only and the ARGV-element has the form "-f",
+	     where f is a valid short option, don't consider it an
+	     abbreviated form of a long option that starts with f.
+	     Otherwise there would be no way to give the -f short
+	     option.
+
+	     On the other hand, if there's a long option "fubar" and
+	     the ARGV-element is "-fu", do consider that an
+	     abbreviation of the long option, just like "--fu", and
+	     not "-f" with arg "u".
+
+	     This distinction seems to be the most useful approach.  */
+	  if (long_only && (argv[d->optind][2]
+			    || !strchr (optstring, argv[d->optind][1])))
+	    {
+	      int code;
+	      d->__nextchar = argv[d->optind] + 1;
+	      code = process_long_option (argc, argv, optstring, longopts,
+					  longind, long_only, d,
+					  print_errors, "-");
+	      if (code != -1)
+		return code;
+	    }
+	}
+
+      /* It is not a long option.  Skip the initial punctuation.  */
+      d->__nextchar = argv[d->optind] + 1;
+    }
+
+  /* Look at and handle the next short option-character.  */
+
+  {
+    char c = *d->__nextchar++;
+    const char *temp = strchr (optstring, c);
+
+    /* Increment 'optind' when we start to process its last character.  */
+    if (*d->__nextchar == '\0')
+      ++d->optind;
+
+    if (temp == NULL || c == ':' || c == ';')
+      {
+	if (print_errors)
+	  fprintf (stderr, _("%s: invalid option -- '%c'\n"), argv[0], c);
+	d->optopt = c;
+	return '?';
+      }
+
+    /* Convenience. Treat POSIX -W foo same as long option --foo */
+    if (temp[0] == 'W' && temp[1] == ';' && longopts != NULL)
+      {
+	/* This is an option that requires an argument.  */
+	if (*d->__nextchar != '\0')
+	  d->optarg = d->__nextchar;
+	else if (d->optind == argc)
+	  {
+	    if (print_errors)
+	      fprintf (stderr,
+		       _("%s: option requires an argument -- '%c'\n"),
+		       argv[0], c);
+
+	    d->optopt = c;
+	    if (optstring[0] == ':')
+	      c = ':';
+	    else
+	      c = '?';
+	    return c;
+	  }
+	else
+	  d->optarg = argv[d->optind];
+
+	d->__nextchar = d->optarg;
+	d->optarg = NULL;
+	return process_long_option (argc, argv, optstring, longopts, longind,
+				    0 /* long_only */, d, print_errors, "-W ");
+      }
+    if (temp[1] == ':')
+      {
+	if (temp[2] == ':')
+	  {
+	    /* This is an option that accepts an argument optionally.  */
+	    if (*d->__nextchar != '\0')
+	      {
+		d->optarg = d->__nextchar;
+		d->optind++;
+	      }
+	    else
+	      d->optarg = NULL;
+	    d->__nextchar = NULL;
+	  }
+	else
+	  {
+	    /* This is an option that requires an argument.  */
+	    if (*d->__nextchar != '\0')
+	      {
+		d->optarg = d->__nextchar;
+		/* If we end this ARGV-element by taking the rest as an arg,
+		   we must advance to the next element now.  */
+		d->optind++;
+	      }
+	    else if (d->optind == argc)
+	      {
+		if (print_errors)
+		  fprintf (stderr,
+			   _("%s: option requires an argument -- '%c'\n"),
+			   argv[0], c);
+
+		d->optopt = c;
+		if (optstring[0] == ':')
+		  c = ':';
+		else
+		  c = '?';
+	      }
+	    else
+	      /* We already incremented 'optind' once;
+		 increment it again when taking next ARGV-elt as argument.  */
+	      d->optarg = argv[d->optind++];
+	    d->__nextchar = NULL;
+	  }
+      }
+    return c;
+  }
+}
+
+int
+_getopt_internal (int argc, char **argv, const char *optstring,
+		  const struct option *longopts, int *longind, int long_only,
+		  int posixly_correct)
+{
+  int result;
+
+  getopt_data.optind = optind;
+  getopt_data.opterr = opterr;
+
+  result = _getopt_internal_r (argc, argv, optstring, longopts,
+			       longind, long_only, &getopt_data,
+			       posixly_correct);
+
+  optind = getopt_data.optind;
+  optarg = getopt_data.optarg;
+  optopt = getopt_data.optopt;
+
+  return result;
+}
+
+/* glibc gets a LSB-compliant getopt and a POSIX-complaint __posix_getopt.
+   Standalone applications just get a POSIX-compliant getopt.
+   POSIX and LSB both require these functions to take 'char *const *argv'
+   even though this is incorrect (because of the permutation).  */
+#define GETOPT_ENTRY(NAME, POSIXLY_CORRECT)			\
+  int								\
+  NAME (int argc, char *const *argv, const char *optstring)	\
+  {								\
+    return _getopt_internal (argc, (char **)argv, optstring,	\
+			     0, 0, 0, POSIXLY_CORRECT);		\
+  }
+
+#ifdef _LIBC
+GETOPT_ENTRY(getopt, 0)
+GETOPT_ENTRY(__posix_getopt, 1)
+#else
+GETOPT_ENTRY(getopt, 1)
+#endif
+
+
+#ifdef TEST
+
+/* Compile with -DTEST to make an executable for use in testing
+   the above definition of 'getopt'.  */
+
+int
+main (int argc, char **argv)
+{
+  int c;
+  int digit_optind = 0;
+
+  while (1)
+    {
+      int this_option_optind = optind ? optind : 1;
+
+      c = getopt (argc, argv, "abc:d:0123456789");
+      if (c == -1)
+	break;
+
+      switch (c)
+	{
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+	  if (digit_optind != 0 && digit_optind != this_option_optind)
+	    printf ("digits occur in two different argv-elements.\n");
+	  digit_optind = this_option_optind;
+	  printf ("option %c\n", c);
+	  break;
+
+	case 'a':
+	  printf ("option a\n");
+	  break;
+
+	case 'b':
+	  printf ("option b\n");
+	  break;
+
+	case 'c':
+	  printf ("option c with value '%s'\n", optarg);
+	  break;
+
+	case '?':
+	  break;
+
+	default:
+	  printf ("?? getopt returned character code 0%o ??\n", c);
+	}
+    }
+
+  if (optind < argc)
+    {
+      printf ("non-option ARGV-elements: ");
+      while (optind < argc)
+	printf ("%s ", argv[optind++]);
+      printf ("\n");
+    }
+
+  exit (0);
+}
+
+#endif /* TEST */
diff --git a/src/grep/lib/getopt.in.h b/src/grep/lib/getopt.in.h
new file mode 100644
index 0000000..bf884f0
--- /dev/null
+++ b/src/grep/lib/getopt.in.h
@@ -0,0 +1,61 @@
+/* Declarations for getopt.
+   Copyright (C) 1989-2021 Free Software Foundation, Inc.
+   This file is part of gnulib.
+   Unlike most of the getopt implementation, it is NOT shared
+   with the GNU C Library, which supplies a different version of
+   this file.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _@GUARD_PREFIX@_GETOPT_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* The include_next requires a split double-inclusion guard.  We must
+   also inform the replacement unistd.h to not recursively use
+   <getopt.h>; our definitions will be present soon enough.  */
+#if @HAVE_GETOPT_H@
+# define _GL_SYSTEM_GETOPT
+# @INCLUDE_NEXT@ @NEXT_GETOPT_H@
+# undef _GL_SYSTEM_GETOPT
+#endif
+
+#define _@GUARD_PREFIX@_GETOPT_H 1
+
+/* Standalone applications should #define __GETOPT_PREFIX to an
+   identifier that prefixes the external functions and variables
+   defined in getopt-core.h and getopt-ext.h.  When this happens,
+   include the headers that might declare getopt so that they will not
+   cause confusion if included after this file (if the system had
+   <getopt.h>, we have already included it).  */
+#if defined __GETOPT_PREFIX
+# if !@HAVE_GETOPT_H@
+#  define __need_system_stdlib_h
+#  include <stdlib.h>
+#  undef __need_system_stdlib_h
+#  include <stdio.h>
+#  include <unistd.h>
+# endif
+#endif
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+#include <getopt-cdefs.h>
+#include <getopt-pfx-core.h>
+#include <getopt-pfx-ext.h>
+
+#endif /* _@GUARD_PREFIX@_GETOPT_H */
diff --git a/src/grep/lib/getopt1.c b/src/grep/lib/getopt1.c
new file mode 100644
index 0000000..5a92806
--- /dev/null
+++ b/src/grep/lib/getopt1.c
@@ -0,0 +1,159 @@
+/* getopt_long and getopt_long_only entry points for GNU getopt.
+   Copyright (C) 1987-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library and is also part of gnulib.
+   Patches to this file should be submitted to both projects.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <config.h>
+#endif
+
+#include "getopt.h"
+#include "getopt_int.h"
+
+int
+getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
+	     const struct option *long_options, int *opt_index)
+{
+  return _getopt_internal (argc, (char **) argv, options, long_options,
+			   opt_index, 0, 0);
+}
+
+int
+_getopt_long_r (int argc, char **argv, const char *options,
+		const struct option *long_options, int *opt_index,
+		struct _getopt_data *d)
+{
+  return _getopt_internal_r (argc, argv, options, long_options, opt_index,
+			     0, d, 0);
+}
+
+/* Like getopt_long, but '-' as well as '--' can indicate a long option.
+   If an option that starts with '-' (not '--') doesn't match a long option,
+   but does match a short option, it is parsed as a short option
+   instead.  */
+
+int
+getopt_long_only (int argc, char *__getopt_argv_const *argv,
+		  const char *options,
+		  const struct option *long_options, int *opt_index)
+{
+  return _getopt_internal (argc, (char **) argv, options, long_options,
+			   opt_index, 1, 0);
+}
+
+int
+_getopt_long_only_r (int argc, char **argv, const char *options,
+		     const struct option *long_options, int *opt_index,
+		     struct _getopt_data *d)
+{
+  return _getopt_internal_r (argc, argv, options, long_options, opt_index,
+			     1, d, 0);
+}
+
+
+#ifdef TEST
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main (int argc, char **argv)
+{
+  int c;
+  int digit_optind = 0;
+
+  while (1)
+    {
+      int this_option_optind = optind ? optind : 1;
+      int option_index = 0;
+      static const struct option long_options[] =
+      {
+	{"add", 1, 0, 0},
+	{"append", 0, 0, 0},
+	{"delete", 1, 0, 0},
+	{"verbose", 0, 0, 0},
+	{"create", 0, 0, 0},
+	{"file", 1, 0, 0},
+	{0, 0, 0, 0}
+      };
+
+      c = getopt_long (argc, argv, "abc:d:0123456789",
+		       long_options, &option_index);
+      if (c == -1)
+	break;
+
+      switch (c)
+	{
+	case 0:
+	  printf ("option %s", long_options[option_index].name);
+	  if (optarg)
+	    printf (" with arg %s", optarg);
+	  printf ("\n");
+	  break;
+
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+	  if (digit_optind != 0 && digit_optind != this_option_optind)
+	    printf ("digits occur in two different argv-elements.\n");
+	  digit_optind = this_option_optind;
+	  printf ("option %c\n", c);
+	  break;
+
+	case 'a':
+	  printf ("option a\n");
+	  break;
+
+	case 'b':
+	  printf ("option b\n");
+	  break;
+
+	case 'c':
+	  printf ("option c with value '%s'\n", optarg);
+	  break;
+
+	case 'd':
+	  printf ("option d with value '%s'\n", optarg);
+	  break;
+
+	case '?':
+	  break;
+
+	default:
+	  printf ("?? getopt returned character code 0%o ??\n", c);
+	}
+    }
+
+  if (optind < argc)
+    {
+      printf ("non-option ARGV-elements: ");
+      while (optind < argc)
+	printf ("%s ", argv[optind++]);
+      printf ("\n");
+    }
+
+  exit (0);
+}
+
+#endif /* TEST */
diff --git a/src/grep/lib/getopt_int.h b/src/grep/lib/getopt_int.h
new file mode 100644
index 0000000..91254e4
--- /dev/null
+++ b/src/grep/lib/getopt_int.h
@@ -0,0 +1,118 @@
+/* Internal declarations for getopt.
+   Copyright (C) 1989-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library and is also part of gnulib.
+   Patches to this file should be submitted to both projects.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_INT_H
+#define _GETOPT_INT_H	1
+
+#include <getopt.h>
+
+extern int _getopt_internal (int ___argc, char **___argv,
+			     const char *__shortopts,
+			     const struct option *__longopts, int *__longind,
+			     int __long_only, int __posixly_correct);
+
+
+/* Reentrant versions which can handle parsing multiple argument
+   vectors at the same time.  */
+
+/* Describe how to deal with options that follow non-option ARGV-elements.
+
+   REQUIRE_ORDER means don't recognize them as options; stop option
+   processing when the first non-option is seen.  This is what POSIX
+   specifies should happen.
+
+   PERMUTE means permute the contents of ARGV as we scan, so that
+   eventually all the non-options are at the end.  This allows options
+   to be given in any order, even with programs that were not written
+   to expect this.
+
+   RETURN_IN_ORDER is an option available to programs that were
+   written to expect options and other ARGV-elements in any order
+   and that care about the ordering of the two.  We describe each
+   non-option ARGV-element as if it were the argument of an option
+   with character code 1.
+
+   The special argument '--' forces an end of option-scanning regardless
+   of the value of 'ordering'.  In the case of RETURN_IN_ORDER, only
+   '--' can cause 'getopt' to return -1 with 'optind' != ARGC.  */
+
+enum __ord
+  {
+    REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
+  };
+
+/* Data type for reentrant functions.  */
+struct _getopt_data
+{
+  /* These have exactly the same meaning as the corresponding global
+     variables, except that they are used for the reentrant
+     versions of getopt.  */
+  int optind;
+  int opterr;
+  int optopt;
+  char *optarg;
+
+  /* Internal members.  */
+
+  /* True if the internal members have been initialized.  */
+  int __initialized;
+
+  /* The next char to be scanned in the option-element
+     in which the last option character we returned was found.
+     This allows us to pick up the scan where we left off.
+
+     If this is zero, or a null string, it means resume the scan
+     by advancing to the next ARGV-element.  */
+  char *__nextchar;
+
+  /* See __ord above.  */
+  enum __ord __ordering;
+
+  /* Handle permutation of arguments.  */
+
+  /* Describe the part of ARGV that contains non-options that have
+     been skipped.  'first_nonopt' is the index in ARGV of the first
+     of them; 'last_nonopt' is the index after the last of them.  */
+
+  int __first_nonopt;
+  int __last_nonopt;
+};
+
+/* The initializer is necessary to set OPTIND and OPTERR to their
+   default values and to clear the initialization flag.  */
+#define _GETOPT_DATA_INITIALIZER	{ 1, 1 }
+
+extern int _getopt_internal_r (int ___argc, char **___argv,
+			       const char *__shortopts,
+			       const struct option *__longopts, int *__longind,
+			       int __long_only, struct _getopt_data *__data,
+			       int __posixly_correct);
+
+extern int _getopt_long_r (int ___argc, char **___argv,
+			   const char *__shortopts,
+			   const struct option *__longopts, int *__longind,
+			   struct _getopt_data *__data);
+
+extern int _getopt_long_only_r (int ___argc, char **___argv,
+				const char *__shortopts,
+				const struct option *__longopts,
+				int *__longind,
+				struct _getopt_data *__data);
+
+#endif /* getopt_int.h */
diff --git a/src/grep/lib/getpagesize.c b/src/grep/lib/getpagesize.c
new file mode 100644
index 0000000..b7493ec
--- /dev/null
+++ b/src/grep/lib/getpagesize.c
@@ -0,0 +1,39 @@
+/* getpagesize emulation for systems where it cannot be done in a C macro.
+
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible and Martin Lambers.  */
+
+#include <config.h>
+
+/* Specification. */
+#include <unistd.h>
+
+/* This implementation is only for native Windows systems.  */
+#if defined _WIN32 && ! defined __CYGWIN__
+
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+
+int
+getpagesize (void)
+{
+  SYSTEM_INFO system_info;
+  GetSystemInfo (&system_info);
+  return system_info.dwPageSize;
+}
+
+#endif
diff --git a/src/grep/lib/getprogname-w32.c b/src/grep/lib/getprogname-w32.c
new file mode 100644
index 0000000..ab02a6c
--- /dev/null
+++ b/src/grep/lib/getprogname-w32.c
@@ -0,0 +1,24 @@
+/* Added by bird - Public Domain. */

+

+#include <windows.h>

+#include <string.h>

+

+static char g_szProgName[260] = {0};

+

+const char *getprogname(void)

+{

+    if (g_szProgName[0] == '\0')

+    {

+        char       szName[260];

+        UINT const cchName = GetModuleFileNameA(NULL, szName, sizeof(szName));

+        UINT       offName = cchName;

+        while (   offName > 0

+               && szName[offName - 1] != '\\'

+               && szName[offName - 1] != '/'

+               && szName[offName - 1] != ':')

+            offName--;

+        memcpy(g_szProgName, &szName[offName], cchName - offName);

+    }

+    return g_szProgName;

+}

+

diff --git a/src/grep/lib/getprogname.c b/src/grep/lib/getprogname.c
new file mode 100644
index 0000000..9a80281
--- /dev/null
+++ b/src/grep/lib/getprogname.c
@@ -0,0 +1,302 @@
+/* Program name management.
+   Copyright (C) 2016-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation; either version 2.1 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "getprogname.h"
+
+#include <errno.h> /* get program_invocation_name declaration */
+#include <stdlib.h> /* get __argv declaration */
+
+#ifdef _AIX
+# include <unistd.h>
+# include <procinfo.h>
+# include <string.h>
+#endif
+
+#ifdef __MVS__
+# ifndef _OPEN_SYS
+#  define _OPEN_SYS
+# endif
+# include <string.h>
+# include <sys/ps.h>
+#endif
+
+#ifdef __hpux
+# include <unistd.h>
+# include <sys/param.h>
+# include <sys/pstat.h>
+# include <string.h>
+#endif
+
+#if defined __sgi || defined __osf__
+# include <string.h>
+# include <unistd.h>
+# include <stdio.h>
+# include <fcntl.h>
+# include <sys/procfs.h>
+#endif
+
+#if defined __SCO_VERSION__ || defined __sysv5__
+# include <fcntl.h>
+# include <stdlib.h>
+# include <string.h>
+#endif
+
+#include "basename-lgpl.h"
+
+#ifndef HAVE_GETPROGNAME             /* not Mac OS X, FreeBSD, NetBSD, OpenBSD >= 5.4, Cygwin */
+char const *
+getprogname (void)
+{
+# if HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME                /* glibc, BeOS */
+  /* https://www.gnu.org/software/libc/manual/html_node/Error-Messages.html */
+  return program_invocation_short_name;
+# elif HAVE_DECL_PROGRAM_INVOCATION_NAME                    /* glibc, BeOS */
+  /* https://www.gnu.org/software/libc/manual/html_node/Error-Messages.html */
+  return last_component (program_invocation_name);
+# elif HAVE_GETEXECNAME                                     /* Solaris */
+  /* https://docs.oracle.com/cd/E19253-01/816-5168/6mbb3hrb1/index.html */
+  const char *p = getexecname ();
+  if (!p)
+    p = "?";
+  return last_component (p);
+# elif HAVE_DECL___ARGV                                     /* mingw, MSVC */
+  /* https://docs.microsoft.com/en-us/cpp/c-runtime-library/argc-argv-wargv */
+  const char *p = __argv && __argv[0] ? __argv[0] : "?";
+  return last_component (p);
+# elif HAVE_VAR___PROGNAME                                  /* OpenBSD, Android, QNX */
+  /* https://man.openbsd.org/style.9 */
+  /* http://www.qnx.de/developers/docs/6.5.0/index.jsp?topic=%2Fcom.qnx.doc.neutrino_lib_ref%2Fp%2F__progname.html */
+  /* Be careful to declare this only when we absolutely need it
+     (OpenBSD 5.1), rather than when it's available.  Otherwise,
+     its mere declaration makes program_invocation_short_name
+     malfunction (have zero length) with Fedora 25's glibc.  */
+  extern char *__progname;
+  const char *p = __progname;
+#  if defined __ANDROID__
+  return last_component (p);
+#  else
+  return p && p[0] ? p : "?";
+#  endif
+# elif _AIX                                                 /* AIX */
+  /* Idea by Bastien ROUCARIÈS,
+     https://lists.gnu.org/r/bug-gnulib/2010-12/msg00095.html
+     Reference: https://www.ibm.com/support/knowledgecenter/en/ssw_aix_61/com.ibm.aix.basetrf1/getprocs.htm
+  */
+  static char *p;
+  static int first = 1;
+  if (first)
+    {
+      first = 0;
+      pid_t pid = getpid ();
+      struct procentry64 procs;
+      p = (0 < getprocs64 (&procs, sizeof procs, NULL, 0, &pid, 1)
+           ? strdup (procs.pi_comm)
+           : NULL);
+      if (!p)
+        p = "?";
+    }
+  return p;
+# elif defined __hpux
+  static char *p;
+  static int first = 1;
+  if (first)
+    {
+      first = 0;
+      pid_t pid = getpid ();
+      struct pst_status status;
+      if (pstat_getproc (&status, sizeof status, 0, pid) > 0)
+        {
+          char *ucomm = status.pst_ucomm;
+          char *cmd = status.pst_cmd;
+          if (strlen (ucomm) < PST_UCOMMLEN - 1)
+            p = ucomm;
+          else
+            {
+              /* ucomm is truncated to length PST_UCOMMLEN - 1.
+                 Look at cmd instead.  */
+              char *space = strchr (cmd, ' ');
+              if (space != NULL)
+                *space = '\0';
+              p = strrchr (cmd, '/');
+              if (p != NULL)
+                p++;
+              else
+                p = cmd;
+              if (strlen (p) > PST_UCOMMLEN - 1
+                  && memcmp (p, ucomm, PST_UCOMMLEN - 1) == 0)
+                /* p is less truncated than ucomm.  */
+                ;
+              else
+                p = ucomm;
+            }
+          p = strdup (p);
+        }
+      else
+        {
+#  if !defined __LP64__
+          /* Support for 32-bit programs running in 64-bit HP-UX.
+             The documented way to do this is to use the same source code
+             as above, but in a compilation unit where '#define _PSTAT64 1'
+             is in effect.  I prefer a single compilation unit; the struct
+             size and the offsets are not going to change.  */
+          char status64[1216];
+          if (__pstat_getproc64 (status64, sizeof status64, 0, pid) > 0)
+            {
+              char *ucomm = status64 + 288;
+              char *cmd = status64 + 168;
+              if (strlen (ucomm) < PST_UCOMMLEN - 1)
+                p = ucomm;
+              else
+                {
+                  /* ucomm is truncated to length PST_UCOMMLEN - 1.
+                     Look at cmd instead.  */
+                  char *space = strchr (cmd, ' ');
+                  if (space != NULL)
+                    *space = '\0';
+                  p = strrchr (cmd, '/');
+                  if (p != NULL)
+                    p++;
+                  else
+                    p = cmd;
+                  if (strlen (p) > PST_UCOMMLEN - 1
+                      && memcmp (p, ucomm, PST_UCOMMLEN - 1) == 0)
+                    /* p is less truncated than ucomm.  */
+                    ;
+                  else
+                    p = ucomm;
+                }
+              p = strdup (p);
+            }
+          else
+#  endif
+            p = NULL;
+        }
+      if (!p)
+        p = "?";
+    }
+  return p;
+# elif __MVS__                                              /* z/OS */
+  /* https://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.bpxbd00/rtwgetp.htm */
+  static char *p = "?";
+  static int first = 1;
+  if (first)
+    {
+      pid_t pid = getpid ();
+      int token;
+      W_PSPROC buf;
+      first = 0;
+      memset (&buf, 0, sizeof(buf));
+      buf.ps_cmdptr    = (char *) malloc (buf.ps_cmdlen    = PS_CMDBLEN_LONG);
+      buf.ps_conttyptr = (char *) malloc (buf.ps_conttylen = PS_CONTTYBLEN);
+      buf.ps_pathptr   = (char *) malloc (buf.ps_pathlen   = PS_PATHBLEN);
+      if (buf.ps_cmdptr && buf.ps_conttyptr && buf.ps_pathptr)
+        {
+          for (token = 0; token >= 0;
+               token = w_getpsent (token, &buf, sizeof(buf)))
+            {
+              if (token > 0 && buf.ps_pid == pid)
+                {
+                  char *s = strdup (last_component (buf.ps_pathptr));
+                  if (s)
+                    p = s;
+                  break;
+                }
+            }
+        }
+      free (buf.ps_cmdptr);
+      free (buf.ps_conttyptr);
+      free (buf.ps_pathptr);
+    }
+  return p;
+# elif defined __sgi || defined __osf__                     /* IRIX or Tru64 */
+  char filename[50];
+  int fd;
+
+  # if defined __sgi
+    sprintf (filename, "/proc/pinfo/%d", (int) getpid ());
+  # else
+    sprintf (filename, "/proc/%d", (int) getpid ());
+  # endif
+  fd = open (filename, O_RDONLY | O_CLOEXEC);
+  if (0 <= fd)
+    {
+      prpsinfo_t buf;
+      int ioctl_ok = 0 <= ioctl (fd, PIOCPSINFO, &buf);
+      close (fd);
+      if (ioctl_ok)
+        {
+          char *name = buf.pr_fname;
+          size_t namesize = sizeof buf.pr_fname;
+          /* It may not be NUL-terminated.  */
+          char *namenul = memchr (name, '\0', namesize);
+          size_t namelen = namenul ? namenul - name : namesize;
+          char *namecopy = malloc (namelen + 1);
+          if (namecopy)
+            {
+              namecopy[namelen] = '\0';
+              return memcpy (namecopy, name, namelen);
+            }
+        }
+    }
+  return NULL;
+# elif defined __SCO_VERSION__ || defined __sysv5__                /* SCO OpenServer6/UnixWare */
+  char buf[80];
+  int fd;
+  sprintf (buf, "/proc/%d/cmdline", getpid());
+  fd = open (buf, O_RDONLY);
+  if (0 <= fd)
+    {
+      size_t n = read (fd, buf, 79);
+      if (n > 0)
+        {
+          buf[n] = '\0'; /* Guarantee null-termination */
+          char *progname;
+          progname = strrchr (buf, '/');
+          if (progname)
+            {
+              progname = progname + 1; /* Skip the '/' */
+            }
+          else
+            {
+              progname = buf;
+            }
+          char *ret;
+          ret = malloc (strlen (progname) + 1);
+          if (ret)
+            {
+              strcpy (ret, progname);
+              return ret;
+            }
+        }
+      close (fd);
+    }
+  return "?";
+# else
+#  error "getprogname module not ported to this OS"
+# endif
+}
+
+#endif
+
+/*
+ * Hey Emacs!
+ * Local Variables:
+ * coding: utf-8
+ * End:
+ */
diff --git a/src/grep/lib/getprogname.h b/src/grep/lib/getprogname.h
new file mode 100644
index 0000000..eb12dcd
--- /dev/null
+++ b/src/grep/lib/getprogname.h
@@ -0,0 +1,40 @@
+/* Program name management.
+   Copyright (C) 2016-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation; either version 2.1 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_GETPROGNAME_H
+#define _GL_GETPROGNAME_H
+
+#include <stdlib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Return the base name of the executing program.
+   On native Windows this will usually end in ".exe" or ".EXE". */
+#ifndef HAVE_GETPROGNAME
+extern char const *getprogname (void)
+# ifdef HAVE_DECL_PROGRAM_INVOCATION_NAME
+  _GL_ATTRIBUTE_PURE
+# endif
+  ;
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/grep/lib/gettext.h b/src/grep/lib/gettext.h
new file mode 100644
index 0000000..f1c7a24
--- /dev/null
+++ b/src/grep/lib/gettext.h
@@ -0,0 +1,301 @@
+/* Convenience header for conditional use of GNU <libintl.h>.
+   Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBGETTEXT_H
+#define _LIBGETTEXT_H 1
+
+/* NLS can be disabled through the configure --disable-nls option
+   or through "#define ENABLE NLS 0" before including this file.  */
+#if defined ENABLE_NLS && ENABLE_NLS
+
+/* Get declarations of GNU message catalog functions.  */
+# include <libintl.h>
+
+/* You can set the DEFAULT_TEXT_DOMAIN macro to specify the domain used by
+   the gettext() and ngettext() macros.  This is an alternative to calling
+   textdomain(), and is useful for libraries.  */
+# ifdef DEFAULT_TEXT_DOMAIN
+#  undef gettext
+#  define gettext(Msgid) \
+     dgettext (DEFAULT_TEXT_DOMAIN, Msgid)
+#  undef ngettext
+#  define ngettext(Msgid1, Msgid2, N) \
+     dngettext (DEFAULT_TEXT_DOMAIN, Msgid1, Msgid2, N)
+# endif
+
+#else
+
+/* Solaris /usr/include/locale.h includes /usr/include/libintl.h, which
+   chokes if dcgettext is defined as a macro.  So include it now, to make
+   later inclusions of <locale.h> a NOP.  We don't include <libintl.h>
+   as well because people using "gettext.h" will not include <libintl.h>,
+   and also including <libintl.h> would fail on SunOS 4, whereas <locale.h>
+   is OK.  */
+#if defined(__sun)
+# include <locale.h>
+#endif
+
+/* Many header files from the libstdc++ coming with g++ 3.3 or newer include
+   <libintl.h>, which chokes if dcgettext is defined as a macro.  So include
+   it now, to make later inclusions of <libintl.h> a NOP.  */
+#if defined(__cplusplus) && defined(__GNUG__) && (__GNUC__ >= 3)
+# include <cstdlib>
+# if (__GLIBC__ >= 2 && !defined __UCLIBC__) || _GLIBCXX_HAVE_LIBINTL_H
+#  include <libintl.h>
+# endif
+#endif
+
+/* Disabled NLS.
+   The casts to 'const char *' serve the purpose of producing warnings
+   for invalid uses of the value returned from these functions.
+   On pre-ANSI systems without 'const', the config.h file is supposed to
+   contain "#define const".  */
+# undef gettext
+# define gettext(Msgid) ((const char *) (Msgid))
+# undef dgettext
+# define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid))
+# undef dcgettext
+# define dcgettext(Domainname, Msgid, Category) \
+    ((void) (Category), dgettext (Domainname, Msgid))
+# undef ngettext
+# define ngettext(Msgid1, Msgid2, N) \
+    ((N) == 1 \
+     ? ((void) (Msgid2), (const char *) (Msgid1)) \
+     : ((void) (Msgid1), (const char *) (Msgid2)))
+# undef dngettext
+# define dngettext(Domainname, Msgid1, Msgid2, N) \
+    ((void) (Domainname), ngettext (Msgid1, Msgid2, N))
+# undef dcngettext
+# define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
+    ((void) (Category), dngettext (Domainname, Msgid1, Msgid2, N))
+# undef textdomain
+# define textdomain(Domainname) ((const char *) (Domainname))
+# undef bindtextdomain
+# define bindtextdomain(Domainname, Dirname) \
+    ((void) (Domainname), (const char *) (Dirname))
+# undef bind_textdomain_codeset
+# define bind_textdomain_codeset(Domainname, Codeset) \
+    ((void) (Domainname), (const char *) (Codeset))
+
+#endif
+
+/* Prefer gnulib's setlocale override over libintl's setlocale override.  */
+#ifdef GNULIB_defined_setlocale
+# undef setlocale
+# define setlocale rpl_setlocale
+#endif
+
+/* A pseudo function call that serves as a marker for the automated
+   extraction of messages, but does not call gettext().  The run-time
+   translation is done at a different place in the code.
+   The argument, String, should be a literal string.  Concatenated strings
+   and other string expressions won't work.
+   The macro's expansion is not parenthesized, so that it is suitable as
+   initializer for static 'char[]' or 'const char[]' variables.  */
+#define gettext_noop(String) String
+
+/* The separator between msgctxt and msgid in a .mo file.  */
+#define GETTEXT_CONTEXT_GLUE "\004"
+
+/* Pseudo function calls, taking a MSGCTXT and a MSGID instead of just a
+   MSGID.  MSGCTXT and MSGID must be string literals.  MSGCTXT should be
+   short and rarely need to change.
+   The letter 'p' stands for 'particular' or 'special'.  */
+#ifdef DEFAULT_TEXT_DOMAIN
+# define pgettext(Msgctxt, Msgid) \
+   pgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
+#else
+# define pgettext(Msgctxt, Msgid) \
+   pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
+#endif
+#define dpgettext(Domainname, Msgctxt, Msgid) \
+  pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
+#define dcpgettext(Domainname, Msgctxt, Msgid, Category) \
+  pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, Category)
+#ifdef DEFAULT_TEXT_DOMAIN
+# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
+   npgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
+#else
+# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
+   npgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
+#endif
+#define dnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
+  npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
+#define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \
+  npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category)
+
+#ifdef __GNUC__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static const char *
+pgettext_aux (const char *domain,
+              const char *msg_ctxt_id, const char *msgid,
+              int category)
+{
+  const char *translation = dcgettext (domain, msg_ctxt_id, category);
+  if (translation == msg_ctxt_id)
+    return msgid;
+  else
+    return translation;
+}
+
+#ifdef __GNUC__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static const char *
+npgettext_aux (const char *domain,
+               const char *msg_ctxt_id, const char *msgid,
+               const char *msgid_plural, unsigned long int n,
+               int category)
+{
+  const char *translation =
+    dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
+  if (translation == msg_ctxt_id || translation == msgid_plural)
+    return (n == 1 ? msgid : msgid_plural);
+  else
+    return translation;
+}
+
+/* The same thing extended for non-constant arguments.  Here MSGCTXT and MSGID
+   can be arbitrary expressions.  But for string literals these macros are
+   less efficient than those above.  */
+
+#include <string.h>
+
+/* GNULIB_NO_VLA can be defined to disable use of VLAs even if supported.
+   This relates to the -Wvla and -Wvla-larger-than warnings, enabled in
+   the default GCC many warnings set.  This allows programs to disable use
+   of VLAs, which may be unintended, or may be awkward to support portably,
+   or may have security implications due to non-deterministic stack usage.  */
+
+#if (!defined GNULIB_NO_VLA \
+     && (((__GNUC__ >= 3 || __GNUG__ >= 2) && !defined __STRICT_ANSI__) \
+     /*  || (__STDC_VERSION__ == 199901L && !defined __HP_cc)
+         || (__STDC_VERSION__ >= 201112L && !defined __STDC_NO_VLA__) */ ))
+# define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 1
+#else
+# define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 0
+#endif
+
+#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+#include <stdlib.h>
+#endif
+
+#define pgettext_expr(Msgctxt, Msgid) \
+  dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES)
+#define dpgettext_expr(Domainname, Msgctxt, Msgid) \
+  dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
+
+#ifdef __GNUC__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static const char *
+dcpgettext_expr (const char *domain,
+                 const char *msgctxt, const char *msgid,
+                 int category)
+{
+  size_t msgctxt_len = strlen (msgctxt) + 1;
+  size_t msgid_len = strlen (msgid) + 1;
+  const char *translation;
+#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+  char msg_ctxt_id[msgctxt_len + msgid_len];
+#else
+  char buf[1024];
+  char *msg_ctxt_id =
+    (msgctxt_len + msgid_len <= sizeof (buf)
+     ? buf
+     : (char *) malloc (msgctxt_len + msgid_len));
+  if (msg_ctxt_id != NULL)
+#endif
+    {
+      int found_translation;
+      memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
+      msg_ctxt_id[msgctxt_len - 1] = '\004';
+      memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
+      translation = dcgettext (domain, msg_ctxt_id, category);
+      found_translation = (translation != msg_ctxt_id);
+#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+      if (msg_ctxt_id != buf)
+        free (msg_ctxt_id);
+#endif
+      if (found_translation)
+        return translation;
+    }
+  return msgid;
+}
+
+#define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \
+  dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
+#define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
+  dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
+
+#ifdef __GNUC__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static const char *
+dcnpgettext_expr (const char *domain,
+                  const char *msgctxt, const char *msgid,
+                  const char *msgid_plural, unsigned long int n,
+                  int category)
+{
+  size_t msgctxt_len = strlen (msgctxt) + 1;
+  size_t msgid_len = strlen (msgid) + 1;
+  const char *translation;
+#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+  char msg_ctxt_id[msgctxt_len + msgid_len];
+#else
+  char buf[1024];
+  char *msg_ctxt_id =
+    (msgctxt_len + msgid_len <= sizeof (buf)
+     ? buf
+     : (char *) malloc (msgctxt_len + msgid_len));
+  if (msg_ctxt_id != NULL)
+#endif
+    {
+      int found_translation;
+      memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
+      msg_ctxt_id[msgctxt_len - 1] = '\004';
+      memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
+      translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
+      found_translation = !(translation == msg_ctxt_id || translation == msgid_plural);
+#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+      if (msg_ctxt_id != buf)
+        free (msg_ctxt_id);
+#endif
+      if (found_translation)
+        return translation;
+    }
+  return (n == 1 ? msgid : msgid_plural);
+}
+
+#endif /* _LIBGETTEXT_H */
diff --git a/src/grep/lib/glthread/lock.c b/src/grep/lib/glthread/lock.c
new file mode 100644
index 0000000..44335e3
--- /dev/null
+++ b/src/grep/lib/glthread/lock.c
@@ -0,0 +1,749 @@
+/* Locking in multithreaded situations.
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-posix.h, gthr-posix95.h.  */
+
+#include <config.h>
+
+#include "glthread/lock.h"
+
+/* ========================================================================= */
+
+#if USE_ISOC_THREADS || USE_ISOC_AND_POSIX_THREADS
+
+/* -------------------------- gl_lock_t datatype -------------------------- */
+
+int
+glthread_lock_init (gl_lock_t *lock)
+{
+  if (mtx_init (&lock->mutex, mtx_plain) != thrd_success)
+    return ENOMEM;
+  lock->init_needed = 0;
+  return 0;
+}
+
+int
+glthread_lock_lock (gl_lock_t *lock)
+{
+  if (lock->init_needed)
+    call_once (&lock->init_once, lock->init_func);
+  if (mtx_lock (&lock->mutex) != thrd_success)
+    return EAGAIN;
+  return 0;
+}
+
+int
+glthread_lock_unlock (gl_lock_t *lock)
+{
+  if (lock->init_needed)
+    call_once (&lock->init_once, lock->init_func);
+  if (mtx_unlock (&lock->mutex) != thrd_success)
+    return EINVAL;
+  return 0;
+}
+
+int
+glthread_lock_destroy (gl_lock_t *lock)
+{
+  if (lock->init_needed)
+    call_once (&lock->init_once, lock->init_func);
+  mtx_destroy (&lock->mutex);
+  return 0;
+}
+
+/* ------------------------- gl_rwlock_t datatype ------------------------- */
+
+int
+glthread_rwlock_init (gl_rwlock_t *lock)
+{
+  if (mtx_init (&lock->lock, mtx_plain) != thrd_success
+      || cnd_init (&lock->waiting_readers) != thrd_success
+      || cnd_init (&lock->waiting_writers) != thrd_success)
+    return ENOMEM;
+  lock->waiting_writers_count = 0;
+  lock->runcount = 0;
+  lock->init_needed = 0;
+  return 0;
+}
+
+int
+glthread_rwlock_rdlock (gl_rwlock_t *lock)
+{
+  if (lock->init_needed)
+    call_once (&lock->init_once, lock->init_func);
+  if (mtx_lock (&lock->lock) != thrd_success)
+    return EAGAIN;
+  /* Test whether only readers are currently running, and whether the runcount
+     field will not overflow, and whether no writer is waiting.  The latter
+     condition is because POSIX recommends that "write locks shall take
+     precedence over read locks", to avoid "writer starvation".  */
+  while (!(lock->runcount + 1 > 0 && lock->waiting_writers_count == 0))
+    {
+      /* This thread has to wait for a while.  Enqueue it among the
+         waiting_readers.  */
+      if (cnd_wait (&lock->waiting_readers, &lock->lock) != thrd_success)
+        {
+          mtx_unlock (&lock->lock);
+          return EINVAL;
+        }
+    }
+  lock->runcount++;
+  if (mtx_unlock (&lock->lock) != thrd_success)
+    return EINVAL;
+  return 0;
+}
+
+int
+glthread_rwlock_wrlock (gl_rwlock_t *lock)
+{
+  if (lock->init_needed)
+    call_once (&lock->init_once, lock->init_func);
+  if (mtx_lock (&lock->lock) != thrd_success)
+    return EAGAIN;
+  /* Test whether no readers or writers are currently running.  */
+  while (!(lock->runcount == 0))
+    {
+      /* This thread has to wait for a while.  Enqueue it among the
+         waiting_writers.  */
+      lock->waiting_writers_count++;
+      if (cnd_wait (&lock->waiting_writers, &lock->lock) != thrd_success)
+        {
+          lock->waiting_writers_count--;
+          mtx_unlock (&lock->lock);
+          return EINVAL;
+        }
+      lock->waiting_writers_count--;
+    }
+  lock->runcount--; /* runcount becomes -1 */
+  if (mtx_unlock (&lock->lock) != thrd_success)
+    return EINVAL;
+  return 0;
+}
+
+int
+glthread_rwlock_unlock (gl_rwlock_t *lock)
+{
+  if (lock->init_needed)
+    call_once (&lock->init_once, lock->init_func);
+  if (mtx_lock (&lock->lock) != thrd_success)
+    return EAGAIN;
+  if (lock->runcount < 0)
+    {
+      /* Drop a writer lock.  */
+      if (!(lock->runcount == -1))
+        {
+          mtx_unlock (&lock->lock);
+          return EINVAL;
+        }
+      lock->runcount = 0;
+    }
+  else
+    {
+      /* Drop a reader lock.  */
+      if (!(lock->runcount > 0))
+        {
+          mtx_unlock (&lock->lock);
+          return EINVAL;
+        }
+      lock->runcount--;
+    }
+  if (lock->runcount == 0)
+    {
+      /* POSIX recommends that "write locks shall take precedence over read
+         locks", to avoid "writer starvation".  */
+      if (lock->waiting_writers_count > 0)
+        {
+          /* Wake up one of the waiting writers.  */
+          if (cnd_signal (&lock->waiting_writers) != thrd_success)
+            {
+              mtx_unlock (&lock->lock);
+              return EINVAL;
+            }
+        }
+      else
+        {
+          /* Wake up all waiting readers.  */
+          if (cnd_broadcast (&lock->waiting_readers) != thrd_success)
+            {
+              mtx_unlock (&lock->lock);
+              return EINVAL;
+            }
+        }
+    }
+  if (mtx_unlock (&lock->lock) != thrd_success)
+    return EINVAL;
+  return 0;
+}
+
+int
+glthread_rwlock_destroy (gl_rwlock_t *lock)
+{
+  if (lock->init_needed)
+    call_once (&lock->init_once, lock->init_func);
+  mtx_destroy (&lock->lock);
+  cnd_destroy (&lock->waiting_readers);
+  cnd_destroy (&lock->waiting_writers);
+  return 0;
+}
+
+/* --------------------- gl_recursive_lock_t datatype --------------------- */
+
+int
+glthread_recursive_lock_init (gl_recursive_lock_t *lock)
+{
+  if (mtx_init (&lock->mutex, mtx_plain | mtx_recursive) != thrd_success)
+    return ENOMEM;
+  lock->init_needed = 0;
+  return 0;
+}
+
+int
+glthread_recursive_lock_lock (gl_recursive_lock_t *lock)
+{
+  if (lock->init_needed)
+    call_once (&lock->init_once, lock->init_func);
+  if (mtx_lock (&lock->mutex) != thrd_success)
+    return EAGAIN;
+  return 0;
+}
+
+int
+glthread_recursive_lock_unlock (gl_recursive_lock_t *lock)
+{
+  if (lock->init_needed)
+    call_once (&lock->init_once, lock->init_func);
+  if (mtx_unlock (&lock->mutex) != thrd_success)
+    return EINVAL;
+  return 0;
+}
+
+int
+glthread_recursive_lock_destroy (gl_recursive_lock_t *lock)
+{
+  if (lock->init_needed)
+    call_once (&lock->init_once, lock->init_func);
+  mtx_destroy (&lock->mutex);
+  return 0;
+}
+
+/* -------------------------- gl_once_t datatype -------------------------- */
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_POSIX_THREADS
+
+/* -------------------------- gl_lock_t datatype -------------------------- */
+
+/* ------------------------- gl_rwlock_t datatype ------------------------- */
+
+# if HAVE_PTHREAD_RWLOCK && (HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER || (defined PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP && (__GNU_LIBRARY__ > 1)))
+
+#  if defined PTHREAD_RWLOCK_INITIALIZER || defined PTHREAD_RWLOCK_INITIALIZER_NP
+
+#   if !HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER
+     /* glibc with bug https://sourceware.org/bugzilla/show_bug.cgi?id=13701 */
+
+int
+glthread_rwlock_init_for_glibc (pthread_rwlock_t *lock)
+{
+  pthread_rwlockattr_t attributes;
+  int err;
+
+  err = pthread_rwlockattr_init (&attributes);
+  if (err != 0)
+    return err;
+  /* Note: PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP is the only value that
+     causes the writer to be preferred. PTHREAD_RWLOCK_PREFER_WRITER_NP does not
+     do this; see
+     http://man7.org/linux/man-pages/man3/pthread_rwlockattr_setkind_np.3.html */
+  err = pthread_rwlockattr_setkind_np (&attributes,
+                                       PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP);
+  if (err == 0)
+    err = pthread_rwlock_init(lock, &attributes);
+  /* pthread_rwlockattr_destroy always returns 0.  It cannot influence the
+     return value.  */
+  pthread_rwlockattr_destroy (&attributes);
+  return err;
+}
+
+#   endif
+#  else
+
+int
+glthread_rwlock_init_multithreaded (gl_rwlock_t *lock)
+{
+  int err;
+
+  err = pthread_rwlock_init (&lock->rwlock, NULL);
+  if (err != 0)
+    return err;
+  lock->initialized = 1;
+  return 0;
+}
+
+int
+glthread_rwlock_rdlock_multithreaded (gl_rwlock_t *lock)
+{
+  if (!lock->initialized)
+    {
+      int err;
+
+      err = pthread_mutex_lock (&lock->guard);
+      if (err != 0)
+        return err;
+      if (!lock->initialized)
+        {
+          err = glthread_rwlock_init_multithreaded (lock);
+          if (err != 0)
+            {
+              pthread_mutex_unlock (&lock->guard);
+              return err;
+            }
+        }
+      err = pthread_mutex_unlock (&lock->guard);
+      if (err != 0)
+        return err;
+    }
+  return pthread_rwlock_rdlock (&lock->rwlock);
+}
+
+int
+glthread_rwlock_wrlock_multithreaded (gl_rwlock_t *lock)
+{
+  if (!lock->initialized)
+    {
+      int err;
+
+      err = pthread_mutex_lock (&lock->guard);
+      if (err != 0)
+        return err;
+      if (!lock->initialized)
+        {
+          err = glthread_rwlock_init_multithreaded (lock);
+          if (err != 0)
+            {
+              pthread_mutex_unlock (&lock->guard);
+              return err;
+            }
+        }
+      err = pthread_mutex_unlock (&lock->guard);
+      if (err != 0)
+        return err;
+    }
+  return pthread_rwlock_wrlock (&lock->rwlock);
+}
+
+int
+glthread_rwlock_unlock_multithreaded (gl_rwlock_t *lock)
+{
+  if (!lock->initialized)
+    return EINVAL;
+  return pthread_rwlock_unlock (&lock->rwlock);
+}
+
+int
+glthread_rwlock_destroy_multithreaded (gl_rwlock_t *lock)
+{
+  int err;
+
+  if (!lock->initialized)
+    return EINVAL;
+  err = pthread_rwlock_destroy (&lock->rwlock);
+  if (err != 0)
+    return err;
+  lock->initialized = 0;
+  return 0;
+}
+
+#  endif
+
+# else
+
+int
+glthread_rwlock_init_multithreaded (gl_rwlock_t *lock)
+{
+  int err;
+
+  err = pthread_mutex_init (&lock->lock, NULL);
+  if (err != 0)
+    return err;
+  err = pthread_cond_init (&lock->waiting_readers, NULL);
+  if (err != 0)
+    return err;
+  err = pthread_cond_init (&lock->waiting_writers, NULL);
+  if (err != 0)
+    return err;
+  lock->waiting_writers_count = 0;
+  lock->runcount = 0;
+  return 0;
+}
+
+int
+glthread_rwlock_rdlock_multithreaded (gl_rwlock_t *lock)
+{
+  int err;
+
+  err = pthread_mutex_lock (&lock->lock);
+  if (err != 0)
+    return err;
+  /* Test whether only readers are currently running, and whether the runcount
+     field will not overflow, and whether no writer is waiting.  The latter
+     condition is because POSIX recommends that "write locks shall take
+     precedence over read locks", to avoid "writer starvation".  */
+  while (!(lock->runcount + 1 > 0 && lock->waiting_writers_count == 0))
+    {
+      /* This thread has to wait for a while.  Enqueue it among the
+         waiting_readers.  */
+      err = pthread_cond_wait (&lock->waiting_readers, &lock->lock);
+      if (err != 0)
+        {
+          pthread_mutex_unlock (&lock->lock);
+          return err;
+        }
+    }
+  lock->runcount++;
+  return pthread_mutex_unlock (&lock->lock);
+}
+
+int
+glthread_rwlock_wrlock_multithreaded (gl_rwlock_t *lock)
+{
+  int err;
+
+  err = pthread_mutex_lock (&lock->lock);
+  if (err != 0)
+    return err;
+  /* Test whether no readers or writers are currently running.  */
+  while (!(lock->runcount == 0))
+    {
+      /* This thread has to wait for a while.  Enqueue it among the
+         waiting_writers.  */
+      lock->waiting_writers_count++;
+      err = pthread_cond_wait (&lock->waiting_writers, &lock->lock);
+      if (err != 0)
+        {
+          lock->waiting_writers_count--;
+          pthread_mutex_unlock (&lock->lock);
+          return err;
+        }
+      lock->waiting_writers_count--;
+    }
+  lock->runcount--; /* runcount becomes -1 */
+  return pthread_mutex_unlock (&lock->lock);
+}
+
+int
+glthread_rwlock_unlock_multithreaded (gl_rwlock_t *lock)
+{
+  int err;
+
+  err = pthread_mutex_lock (&lock->lock);
+  if (err != 0)
+    return err;
+  if (lock->runcount < 0)
+    {
+      /* Drop a writer lock.  */
+      if (!(lock->runcount == -1))
+        {
+          pthread_mutex_unlock (&lock->lock);
+          return EINVAL;
+        }
+      lock->runcount = 0;
+    }
+  else
+    {
+      /* Drop a reader lock.  */
+      if (!(lock->runcount > 0))
+        {
+          pthread_mutex_unlock (&lock->lock);
+          return EINVAL;
+        }
+      lock->runcount--;
+    }
+  if (lock->runcount == 0)
+    {
+      /* POSIX recommends that "write locks shall take precedence over read
+         locks", to avoid "writer starvation".  */
+      if (lock->waiting_writers_count > 0)
+        {
+          /* Wake up one of the waiting writers.  */
+          err = pthread_cond_signal (&lock->waiting_writers);
+          if (err != 0)
+            {
+              pthread_mutex_unlock (&lock->lock);
+              return err;
+            }
+        }
+      else
+        {
+          /* Wake up all waiting readers.  */
+          err = pthread_cond_broadcast (&lock->waiting_readers);
+          if (err != 0)
+            {
+              pthread_mutex_unlock (&lock->lock);
+              return err;
+            }
+        }
+    }
+  return pthread_mutex_unlock (&lock->lock);
+}
+
+int
+glthread_rwlock_destroy_multithreaded (gl_rwlock_t *lock)
+{
+  int err;
+
+  err = pthread_mutex_destroy (&lock->lock);
+  if (err != 0)
+    return err;
+  err = pthread_cond_destroy (&lock->waiting_readers);
+  if (err != 0)
+    return err;
+  err = pthread_cond_destroy (&lock->waiting_writers);
+  if (err != 0)
+    return err;
+  return 0;
+}
+
+# endif
+
+/* --------------------- gl_recursive_lock_t datatype --------------------- */
+
+# if HAVE_PTHREAD_MUTEX_RECURSIVE
+
+#  if defined PTHREAD_RECURSIVE_MUTEX_INITIALIZER || defined PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+
+int
+glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock)
+{
+  pthread_mutexattr_t attributes;
+  int err;
+
+  err = pthread_mutexattr_init (&attributes);
+  if (err != 0)
+    return err;
+  err = pthread_mutexattr_settype (&attributes, PTHREAD_MUTEX_RECURSIVE);
+  if (err != 0)
+    {
+      pthread_mutexattr_destroy (&attributes);
+      return err;
+    }
+  err = pthread_mutex_init (lock, &attributes);
+  if (err != 0)
+    {
+      pthread_mutexattr_destroy (&attributes);
+      return err;
+    }
+  err = pthread_mutexattr_destroy (&attributes);
+  if (err != 0)
+    return err;
+  return 0;
+}
+
+#  else
+
+int
+glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock)
+{
+  pthread_mutexattr_t attributes;
+  int err;
+
+  err = pthread_mutexattr_init (&attributes);
+  if (err != 0)
+    return err;
+  err = pthread_mutexattr_settype (&attributes, PTHREAD_MUTEX_RECURSIVE);
+  if (err != 0)
+    {
+      pthread_mutexattr_destroy (&attributes);
+      return err;
+    }
+  err = pthread_mutex_init (&lock->recmutex, &attributes);
+  if (err != 0)
+    {
+      pthread_mutexattr_destroy (&attributes);
+      return err;
+    }
+  err = pthread_mutexattr_destroy (&attributes);
+  if (err != 0)
+    return err;
+  lock->initialized = 1;
+  return 0;
+}
+
+int
+glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock)
+{
+  if (!lock->initialized)
+    {
+      int err;
+
+      err = pthread_mutex_lock (&lock->guard);
+      if (err != 0)
+        return err;
+      if (!lock->initialized)
+        {
+          err = glthread_recursive_lock_init_multithreaded (lock);
+          if (err != 0)
+            {
+              pthread_mutex_unlock (&lock->guard);
+              return err;
+            }
+        }
+      err = pthread_mutex_unlock (&lock->guard);
+      if (err != 0)
+        return err;
+    }
+  return pthread_mutex_lock (&lock->recmutex);
+}
+
+int
+glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock)
+{
+  if (!lock->initialized)
+    return EINVAL;
+  return pthread_mutex_unlock (&lock->recmutex);
+}
+
+int
+glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock)
+{
+  int err;
+
+  if (!lock->initialized)
+    return EINVAL;
+  err = pthread_mutex_destroy (&lock->recmutex);
+  if (err != 0)
+    return err;
+  lock->initialized = 0;
+  return 0;
+}
+
+#  endif
+
+# else
+
+int
+glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock)
+{
+  int err;
+
+  err = pthread_mutex_init (&lock->mutex, NULL);
+  if (err != 0)
+    return err;
+  lock->owner = (pthread_t) 0;
+  lock->depth = 0;
+  return 0;
+}
+
+int
+glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock)
+{
+  pthread_t self = pthread_self ();
+  if (lock->owner != self)
+    {
+      int err;
+
+      err = pthread_mutex_lock (&lock->mutex);
+      if (err != 0)
+        return err;
+      lock->owner = self;
+    }
+  if (++(lock->depth) == 0) /* wraparound? */
+    {
+      lock->depth--;
+      return EAGAIN;
+    }
+  return 0;
+}
+
+int
+glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock)
+{
+  if (lock->owner != pthread_self ())
+    return EPERM;
+  if (lock->depth == 0)
+    return EINVAL;
+  if (--(lock->depth) == 0)
+    {
+      lock->owner = (pthread_t) 0;
+      return pthread_mutex_unlock (&lock->mutex);
+    }
+  else
+    return 0;
+}
+
+int
+glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock)
+{
+  if (lock->owner != (pthread_t) 0)
+    return EBUSY;
+  return pthread_mutex_destroy (&lock->mutex);
+}
+
+# endif
+
+/* -------------------------- gl_once_t datatype -------------------------- */
+
+static const pthread_once_t fresh_once = PTHREAD_ONCE_INIT;
+
+int
+glthread_once_singlethreaded (pthread_once_t *once_control)
+{
+  /* We don't know whether pthread_once_t is an integer type, a floating-point
+     type, a pointer type, or a structure type.  */
+  char *firstbyte = (char *)once_control;
+  if (*firstbyte == *(const char *)&fresh_once)
+    {
+      /* First time use of once_control.  Invert the first byte.  */
+      *firstbyte = ~ *(const char *)&fresh_once;
+      return 1;
+    }
+  else
+    return 0;
+}
+
+# if !(PTHREAD_IN_USE_DETECTION_HARD || USE_POSIX_THREADS_WEAK)
+
+int
+glthread_once_multithreaded (pthread_once_t *once_control,
+                             void (*init_function) (void))
+{
+  int err = pthread_once (once_control, init_function);
+  if (err == ENOSYS)
+    {
+      /* This happens on FreeBSD 11: The pthread_once function in libc returns
+         ENOSYS.  */
+      if (glthread_once_singlethreaded (once_control))
+        init_function ();
+      return 0;
+    }
+  return err;
+}
+
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_WINDOWS_THREADS
+
+#endif
+
+/* ========================================================================= */
diff --git a/src/grep/lib/glthread/lock.h b/src/grep/lib/glthread/lock.h
new file mode 100644
index 0000000..cc4c519
--- /dev/null
+++ b/src/grep/lib/glthread/lock.h
@@ -0,0 +1,791 @@
+/* Locking in multithreaded situations.
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-win32.h.  */
+
+/* This file contains locking primitives for use with a given thread library.
+   It does not contain primitives for creating threads or for other
+   synchronization primitives.
+
+   Normal (non-recursive) locks:
+     Type:                gl_lock_t
+     Declaration:         gl_lock_define(extern, name)
+     Initializer:         gl_lock_define_initialized(, name)
+     Initialization:      gl_lock_init (name);
+     Taking the lock:     gl_lock_lock (name);
+     Releasing the lock:  gl_lock_unlock (name);
+     De-initialization:   gl_lock_destroy (name);
+   Equivalent functions with control of error handling:
+     Initialization:      err = glthread_lock_init (&name);
+     Taking the lock:     err = glthread_lock_lock (&name);
+     Releasing the lock:  err = glthread_lock_unlock (&name);
+     De-initialization:   err = glthread_lock_destroy (&name);
+
+   Read-Write (non-recursive) locks:
+     Type:                gl_rwlock_t
+     Declaration:         gl_rwlock_define(extern, name)
+     Initializer:         gl_rwlock_define_initialized(, name)
+     Initialization:      gl_rwlock_init (name);
+     Taking the lock:     gl_rwlock_rdlock (name);
+                          gl_rwlock_wrlock (name);
+     Releasing the lock:  gl_rwlock_unlock (name);
+     De-initialization:   gl_rwlock_destroy (name);
+   Equivalent functions with control of error handling:
+     Initialization:      err = glthread_rwlock_init (&name);
+     Taking the lock:     err = glthread_rwlock_rdlock (&name);
+                          err = glthread_rwlock_wrlock (&name);
+     Releasing the lock:  err = glthread_rwlock_unlock (&name);
+     De-initialization:   err = glthread_rwlock_destroy (&name);
+
+   Recursive locks:
+     Type:                gl_recursive_lock_t
+     Declaration:         gl_recursive_lock_define(extern, name)
+     Initializer:         gl_recursive_lock_define_initialized(, name)
+     Initialization:      gl_recursive_lock_init (name);
+     Taking the lock:     gl_recursive_lock_lock (name);
+     Releasing the lock:  gl_recursive_lock_unlock (name);
+     De-initialization:   gl_recursive_lock_destroy (name);
+   Equivalent functions with control of error handling:
+     Initialization:      err = glthread_recursive_lock_init (&name);
+     Taking the lock:     err = glthread_recursive_lock_lock (&name);
+     Releasing the lock:  err = glthread_recursive_lock_unlock (&name);
+     De-initialization:   err = glthread_recursive_lock_destroy (&name);
+
+  Once-only execution:
+     Type:                gl_once_t
+     Initializer:         gl_once_define(extern, name)
+     Execution:           gl_once (name, initfunction);
+   Equivalent functions with control of error handling:
+     Execution:           err = glthread_once (&name, initfunction);
+*/
+
+
+#ifndef _LOCK_H
+#define _LOCK_H
+
+#include <errno.h>
+#include <stdlib.h>
+
+#if !defined c11_threads_in_use
+# if HAVE_THREADS_H && USE_POSIX_THREADS_FROM_LIBC
+#  define c11_threads_in_use() 1
+# elif HAVE_THREADS_H && USE_POSIX_THREADS_WEAK
+#  include <threads.h>
+#  pragma weak thrd_exit
+#  define c11_threads_in_use() (thrd_exit != NULL)
+# else
+#  define c11_threads_in_use() 0
+# endif
+#endif
+
+/* ========================================================================= */
+
+#if USE_ISOC_THREADS || USE_ISOC_AND_POSIX_THREADS
+
+/* Use the ISO C threads library.  */
+
+# include <threads.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+/* -------------------------- gl_lock_t datatype -------------------------- */
+
+typedef struct
+        {
+          int volatile init_needed;
+          once_flag init_once;
+          void (*init_func) (void);
+          mtx_t mutex;
+        }
+        gl_lock_t;
+# define gl_lock_define(STORAGECLASS, NAME) \
+    STORAGECLASS gl_lock_t NAME;
+# define gl_lock_define_initialized(STORAGECLASS, NAME) \
+    static void _atomic_init_##NAME (void);       \
+    STORAGECLASS gl_lock_t NAME =                 \
+      { 1, ONCE_FLAG_INIT, _atomic_init_##NAME }; \
+    static void _atomic_init_##NAME (void)        \
+    {                                             \
+      if (glthread_lock_init (&(NAME)))           \
+        abort ();                                 \
+    }
+extern int glthread_lock_init (gl_lock_t *lock);
+extern int glthread_lock_lock (gl_lock_t *lock);
+extern int glthread_lock_unlock (gl_lock_t *lock);
+extern int glthread_lock_destroy (gl_lock_t *lock);
+
+/* ------------------------- gl_rwlock_t datatype ------------------------- */
+
+typedef struct
+        {
+          int volatile init_needed;
+          once_flag init_once;
+          void (*init_func) (void);
+          mtx_t lock; /* protects the remaining fields */
+          cnd_t waiting_readers; /* waiting readers */
+          cnd_t waiting_writers; /* waiting writers */
+          unsigned int waiting_writers_count; /* number of waiting writers */
+          int runcount; /* number of readers running, or -1 when a writer runs */
+        }
+        gl_rwlock_t;
+# define gl_rwlock_define(STORAGECLASS, NAME) \
+    STORAGECLASS gl_rwlock_t NAME;
+# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
+    static void _atomic_init_##NAME (void);       \
+    STORAGECLASS gl_rwlock_t NAME =               \
+      { 1, ONCE_FLAG_INIT, _atomic_init_##NAME }; \
+    static void _atomic_init_##NAME (void)        \
+    {                                             \
+      if (glthread_rwlock_init (&(NAME)))         \
+        abort ();                                 \
+    }
+extern int glthread_rwlock_init (gl_rwlock_t *lock);
+extern int glthread_rwlock_rdlock (gl_rwlock_t *lock);
+extern int glthread_rwlock_wrlock (gl_rwlock_t *lock);
+extern int glthread_rwlock_unlock (gl_rwlock_t *lock);
+extern int glthread_rwlock_destroy (gl_rwlock_t *lock);
+
+/* --------------------- gl_recursive_lock_t datatype --------------------- */
+
+typedef struct
+        {
+          int volatile init_needed;
+          once_flag init_once;
+          void (*init_func) (void);
+          mtx_t mutex;
+        }
+        gl_recursive_lock_t;
+# define gl_recursive_lock_define(STORAGECLASS, NAME) \
+    STORAGECLASS gl_recursive_lock_t NAME;
+# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
+    static void _atomic_init_##NAME (void);       \
+    STORAGECLASS gl_recursive_lock_t NAME =       \
+      { 1, ONCE_FLAG_INIT, _atomic_init_##NAME }; \
+    static void _atomic_init_##NAME (void)        \
+    {                                             \
+      if (glthread_recursive_lock_init (&(NAME))) \
+        abort ();                                 \
+    }
+extern int glthread_recursive_lock_init (gl_recursive_lock_t *lock);
+extern int glthread_recursive_lock_lock (gl_recursive_lock_t *lock);
+extern int glthread_recursive_lock_unlock (gl_recursive_lock_t *lock);
+extern int glthread_recursive_lock_destroy (gl_recursive_lock_t *lock);
+
+/* -------------------------- gl_once_t datatype -------------------------- */
+
+typedef once_flag gl_once_t;
+# define gl_once_define(STORAGECLASS, NAME) \
+    STORAGECLASS once_flag NAME = ONCE_FLAG_INIT;
+# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
+    (call_once (ONCE_CONTROL, INITFUNCTION), 0)
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_POSIX_THREADS
+
+/* Use the POSIX threads library.  */
+
+# include <pthread.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+# if PTHREAD_IN_USE_DETECTION_HARD
+
+/* The pthread_in_use() detection needs to be done at runtime.  */
+#  define pthread_in_use() \
+     glthread_in_use ()
+extern int glthread_in_use (void);
+
+# endif
+
+# if USE_POSIX_THREADS_WEAK
+
+/* Use weak references to the POSIX threads library.  */
+
+/* Weak references avoid dragging in external libraries if the other parts
+   of the program don't use them.  Here we use them, because we don't want
+   every program that uses libintl to depend on libpthread.  This assumes
+   that libpthread would not be loaded after libintl; i.e. if libintl is
+   loaded first, by an executable that does not depend on libpthread, and
+   then a module is dynamically loaded that depends on libpthread, libintl
+   will not be multithread-safe.  */
+
+/* The way to test at runtime whether libpthread is present is to test
+   whether a function pointer's value, such as &pthread_mutex_init, is
+   non-NULL.  However, some versions of GCC have a bug through which, in
+   PIC mode, &foo != NULL always evaluates to true if there is a direct
+   call to foo(...) in the same function.  To avoid this, we test the
+   address of a function in libpthread that we don't use.  */
+
+#  pragma weak pthread_mutex_init
+#  pragma weak pthread_mutex_lock
+#  pragma weak pthread_mutex_unlock
+#  pragma weak pthread_mutex_destroy
+#  pragma weak pthread_rwlock_init
+#  pragma weak pthread_rwlock_rdlock
+#  pragma weak pthread_rwlock_wrlock
+#  pragma weak pthread_rwlock_unlock
+#  pragma weak pthread_rwlock_destroy
+#  pragma weak pthread_once
+#  pragma weak pthread_cond_init
+#  pragma weak pthread_cond_wait
+#  pragma weak pthread_cond_signal
+#  pragma weak pthread_cond_broadcast
+#  pragma weak pthread_cond_destroy
+#  pragma weak pthread_mutexattr_init
+#  pragma weak pthread_mutexattr_settype
+#  pragma weak pthread_mutexattr_destroy
+#  pragma weak pthread_rwlockattr_init
+#  if __GNU_LIBRARY__ > 1
+#   pragma weak pthread_rwlockattr_setkind_np
+#  endif
+#  pragma weak pthread_rwlockattr_destroy
+#  ifndef pthread_self
+#   pragma weak pthread_self
+#  endif
+
+#  if !PTHREAD_IN_USE_DETECTION_HARD
+    /* Considering all platforms with USE_POSIX_THREADS_WEAK, only few symbols
+       can be used to determine whether libpthread is in use.  These are:
+         pthread_mutexattr_gettype
+         pthread_rwlockattr_destroy
+         pthread_rwlockattr_init
+     */
+#   pragma weak pthread_mutexattr_gettype
+#   define pthread_in_use() \
+      (pthread_mutexattr_gettype != NULL || c11_threads_in_use ())
+#  endif
+
+# else
+
+#  if !PTHREAD_IN_USE_DETECTION_HARD
+#   define pthread_in_use() 1
+#  endif
+
+# endif
+
+/* -------------------------- gl_lock_t datatype -------------------------- */
+
+typedef pthread_mutex_t gl_lock_t;
+# define gl_lock_define(STORAGECLASS, NAME) \
+    STORAGECLASS pthread_mutex_t NAME;
+# define gl_lock_define_initialized(STORAGECLASS, NAME) \
+    STORAGECLASS pthread_mutex_t NAME = gl_lock_initializer;
+# define gl_lock_initializer \
+    PTHREAD_MUTEX_INITIALIZER
+# define glthread_lock_init(LOCK) \
+    (pthread_in_use () ? pthread_mutex_init (LOCK, NULL) : 0)
+# define glthread_lock_lock(LOCK) \
+    (pthread_in_use () ? pthread_mutex_lock (LOCK) : 0)
+# define glthread_lock_unlock(LOCK) \
+    (pthread_in_use () ? pthread_mutex_unlock (LOCK) : 0)
+# define glthread_lock_destroy(LOCK) \
+    (pthread_in_use () ? pthread_mutex_destroy (LOCK) : 0)
+
+/* ------------------------- gl_rwlock_t datatype ------------------------- */
+
+# if HAVE_PTHREAD_RWLOCK && (HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER || (defined PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP && (__GNU_LIBRARY__ > 1)))
+
+#  if defined PTHREAD_RWLOCK_INITIALIZER || defined PTHREAD_RWLOCK_INITIALIZER_NP
+
+typedef pthread_rwlock_t gl_rwlock_t;
+#   define gl_rwlock_define(STORAGECLASS, NAME) \
+      STORAGECLASS pthread_rwlock_t NAME;
+#   define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
+      STORAGECLASS pthread_rwlock_t NAME = gl_rwlock_initializer;
+#   if HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER
+#    if defined PTHREAD_RWLOCK_INITIALIZER
+#     define gl_rwlock_initializer \
+        PTHREAD_RWLOCK_INITIALIZER
+#    else
+#     define gl_rwlock_initializer \
+        PTHREAD_RWLOCK_INITIALIZER_NP
+#    endif
+#    define glthread_rwlock_init(LOCK) \
+       (pthread_in_use () ? pthread_rwlock_init (LOCK, NULL) : 0)
+#   else /* glibc with bug https://sourceware.org/bugzilla/show_bug.cgi?id=13701 */
+#    define gl_rwlock_initializer \
+       PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP
+#    define glthread_rwlock_init(LOCK) \
+       (pthread_in_use () ? glthread_rwlock_init_for_glibc (LOCK) : 0)
+extern int glthread_rwlock_init_for_glibc (pthread_rwlock_t *lock);
+#   endif
+#   define glthread_rwlock_rdlock(LOCK) \
+      (pthread_in_use () ? pthread_rwlock_rdlock (LOCK) : 0)
+#   define glthread_rwlock_wrlock(LOCK) \
+      (pthread_in_use () ? pthread_rwlock_wrlock (LOCK) : 0)
+#   define glthread_rwlock_unlock(LOCK) \
+      (pthread_in_use () ? pthread_rwlock_unlock (LOCK) : 0)
+#   define glthread_rwlock_destroy(LOCK) \
+      (pthread_in_use () ? pthread_rwlock_destroy (LOCK) : 0)
+
+#  else
+
+typedef struct
+        {
+          int initialized;
+          pthread_mutex_t guard;   /* protects the initialization */
+          pthread_rwlock_t rwlock; /* read-write lock */
+        }
+        gl_rwlock_t;
+#   define gl_rwlock_define(STORAGECLASS, NAME) \
+      STORAGECLASS gl_rwlock_t NAME;
+#   define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
+      STORAGECLASS gl_rwlock_t NAME = gl_rwlock_initializer;
+#   define gl_rwlock_initializer \
+      { 0, PTHREAD_MUTEX_INITIALIZER }
+#   define glthread_rwlock_init(LOCK) \
+      (pthread_in_use () ? glthread_rwlock_init_multithreaded (LOCK) : 0)
+#   define glthread_rwlock_rdlock(LOCK) \
+      (pthread_in_use () ? glthread_rwlock_rdlock_multithreaded (LOCK) : 0)
+#   define glthread_rwlock_wrlock(LOCK) \
+      (pthread_in_use () ? glthread_rwlock_wrlock_multithreaded (LOCK) : 0)
+#   define glthread_rwlock_unlock(LOCK) \
+      (pthread_in_use () ? glthread_rwlock_unlock_multithreaded (LOCK) : 0)
+#   define glthread_rwlock_destroy(LOCK) \
+      (pthread_in_use () ? glthread_rwlock_destroy_multithreaded (LOCK) : 0)
+extern int glthread_rwlock_init_multithreaded (gl_rwlock_t *lock);
+extern int glthread_rwlock_rdlock_multithreaded (gl_rwlock_t *lock);
+extern int glthread_rwlock_wrlock_multithreaded (gl_rwlock_t *lock);
+extern int glthread_rwlock_unlock_multithreaded (gl_rwlock_t *lock);
+extern int glthread_rwlock_destroy_multithreaded (gl_rwlock_t *lock);
+
+#  endif
+
+# else
+
+typedef struct
+        {
+          pthread_mutex_t lock; /* protects the remaining fields */
+          pthread_cond_t waiting_readers; /* waiting readers */
+          pthread_cond_t waiting_writers; /* waiting writers */
+          unsigned int waiting_writers_count; /* number of waiting writers */
+          int runcount; /* number of readers running, or -1 when a writer runs */
+        }
+        gl_rwlock_t;
+# define gl_rwlock_define(STORAGECLASS, NAME) \
+    STORAGECLASS gl_rwlock_t NAME;
+# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
+    STORAGECLASS gl_rwlock_t NAME = gl_rwlock_initializer;
+# define gl_rwlock_initializer \
+    { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, PTHREAD_COND_INITIALIZER, 0, 0 }
+# define glthread_rwlock_init(LOCK) \
+    (pthread_in_use () ? glthread_rwlock_init_multithreaded (LOCK) : 0)
+# define glthread_rwlock_rdlock(LOCK) \
+    (pthread_in_use () ? glthread_rwlock_rdlock_multithreaded (LOCK) : 0)
+# define glthread_rwlock_wrlock(LOCK) \
+    (pthread_in_use () ? glthread_rwlock_wrlock_multithreaded (LOCK) : 0)
+# define glthread_rwlock_unlock(LOCK) \
+    (pthread_in_use () ? glthread_rwlock_unlock_multithreaded (LOCK) : 0)
+# define glthread_rwlock_destroy(LOCK) \
+    (pthread_in_use () ? glthread_rwlock_destroy_multithreaded (LOCK) : 0)
+extern int glthread_rwlock_init_multithreaded (gl_rwlock_t *lock);
+extern int glthread_rwlock_rdlock_multithreaded (gl_rwlock_t *lock);
+extern int glthread_rwlock_wrlock_multithreaded (gl_rwlock_t *lock);
+extern int glthread_rwlock_unlock_multithreaded (gl_rwlock_t *lock);
+extern int glthread_rwlock_destroy_multithreaded (gl_rwlock_t *lock);
+
+# endif
+
+/* --------------------- gl_recursive_lock_t datatype --------------------- */
+
+# if HAVE_PTHREAD_MUTEX_RECURSIVE
+
+#  if defined PTHREAD_RECURSIVE_MUTEX_INITIALIZER || defined PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+
+typedef pthread_mutex_t gl_recursive_lock_t;
+#   define gl_recursive_lock_define(STORAGECLASS, NAME) \
+      STORAGECLASS pthread_mutex_t NAME;
+#   define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
+      STORAGECLASS pthread_mutex_t NAME = gl_recursive_lock_initializer;
+#   ifdef PTHREAD_RECURSIVE_MUTEX_INITIALIZER
+#    define gl_recursive_lock_initializer \
+       PTHREAD_RECURSIVE_MUTEX_INITIALIZER
+#   else
+#    define gl_recursive_lock_initializer \
+       PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+#   endif
+#   define glthread_recursive_lock_init(LOCK) \
+      (pthread_in_use () ? glthread_recursive_lock_init_multithreaded (LOCK) : 0)
+#   define glthread_recursive_lock_lock(LOCK) \
+      (pthread_in_use () ? pthread_mutex_lock (LOCK) : 0)
+#   define glthread_recursive_lock_unlock(LOCK) \
+      (pthread_in_use () ? pthread_mutex_unlock (LOCK) : 0)
+#   define glthread_recursive_lock_destroy(LOCK) \
+      (pthread_in_use () ? pthread_mutex_destroy (LOCK) : 0)
+extern int glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock);
+
+#  else
+
+typedef struct
+        {
+          pthread_mutex_t recmutex; /* recursive mutex */
+          pthread_mutex_t guard;    /* protects the initialization */
+          int initialized;
+        }
+        gl_recursive_lock_t;
+#   define gl_recursive_lock_define(STORAGECLASS, NAME) \
+      STORAGECLASS gl_recursive_lock_t NAME;
+#   define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
+      STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
+#   define gl_recursive_lock_initializer \
+      { PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, 0 }
+#   define glthread_recursive_lock_init(LOCK) \
+      (pthread_in_use () ? glthread_recursive_lock_init_multithreaded (LOCK) : 0)
+#   define glthread_recursive_lock_lock(LOCK) \
+      (pthread_in_use () ? glthread_recursive_lock_lock_multithreaded (LOCK) : 0)
+#   define glthread_recursive_lock_unlock(LOCK) \
+      (pthread_in_use () ? glthread_recursive_lock_unlock_multithreaded (LOCK) : 0)
+#   define glthread_recursive_lock_destroy(LOCK) \
+      (pthread_in_use () ? glthread_recursive_lock_destroy_multithreaded (LOCK) : 0)
+extern int glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock);
+extern int glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock);
+extern int glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock);
+extern int glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock);
+
+#  endif
+
+# else
+
+/* Old versions of POSIX threads on Solaris did not have recursive locks.
+   We have to implement them ourselves.  */
+
+typedef struct
+        {
+          pthread_mutex_t mutex;
+          pthread_t owner;
+          unsigned long depth;
+        }
+        gl_recursive_lock_t;
+#  define gl_recursive_lock_define(STORAGECLASS, NAME) \
+     STORAGECLASS gl_recursive_lock_t NAME;
+#  define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
+     STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
+#  define gl_recursive_lock_initializer \
+     { PTHREAD_MUTEX_INITIALIZER, (pthread_t) 0, 0 }
+#  define glthread_recursive_lock_init(LOCK) \
+     (pthread_in_use () ? glthread_recursive_lock_init_multithreaded (LOCK) : 0)
+#  define glthread_recursive_lock_lock(LOCK) \
+     (pthread_in_use () ? glthread_recursive_lock_lock_multithreaded (LOCK) : 0)
+#  define glthread_recursive_lock_unlock(LOCK) \
+     (pthread_in_use () ? glthread_recursive_lock_unlock_multithreaded (LOCK) : 0)
+#  define glthread_recursive_lock_destroy(LOCK) \
+     (pthread_in_use () ? glthread_recursive_lock_destroy_multithreaded (LOCK) : 0)
+extern int glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock);
+extern int glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock);
+extern int glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock);
+extern int glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock);
+
+# endif
+
+/* -------------------------- gl_once_t datatype -------------------------- */
+
+typedef pthread_once_t gl_once_t;
+# define gl_once_define(STORAGECLASS, NAME) \
+    STORAGECLASS pthread_once_t NAME = PTHREAD_ONCE_INIT;
+# if PTHREAD_IN_USE_DETECTION_HARD || USE_POSIX_THREADS_WEAK
+#  define glthread_once(ONCE_CONTROL, INITFUNCTION) \
+     (pthread_in_use ()                                                        \
+      ? pthread_once (ONCE_CONTROL, INITFUNCTION)                              \
+      : (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
+# else
+#  define glthread_once(ONCE_CONTROL, INITFUNCTION) \
+     (pthread_in_use ()                                                        \
+      ? glthread_once_multithreaded (ONCE_CONTROL, INITFUNCTION)               \
+      : (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
+extern int glthread_once_multithreaded (pthread_once_t *once_control,
+                                        void (*init_function) (void));
+# endif
+extern int glthread_once_singlethreaded (pthread_once_t *once_control);
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_WINDOWS_THREADS
+
+# define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+# include <windows.h>
+
+# include "windows-mutex.h"
+# include "windows-rwlock.h"
+# include "windows-recmutex.h"
+# include "windows-once.h"
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+/* We can use CRITICAL_SECTION directly, rather than the native Windows Event,
+   Mutex, Semaphore types, because
+     - we need only to synchronize inside a single process (address space),
+       not inter-process locking,
+     - we don't need to support trylock operations.  (TryEnterCriticalSection
+       does not work on Windows 95/98/ME.  Packages that need trylock usually
+       define their own mutex type.)  */
+
+/* There is no way to statically initialize a CRITICAL_SECTION.  It needs
+   to be done lazily, once only.  For this we need spinlocks.  */
+
+/* -------------------------- gl_lock_t datatype -------------------------- */
+
+typedef glwthread_mutex_t gl_lock_t;
+# define gl_lock_define(STORAGECLASS, NAME) \
+    STORAGECLASS gl_lock_t NAME;
+# define gl_lock_define_initialized(STORAGECLASS, NAME) \
+    STORAGECLASS gl_lock_t NAME = gl_lock_initializer;
+# define gl_lock_initializer \
+    GLWTHREAD_MUTEX_INIT
+# define glthread_lock_init(LOCK) \
+    (glwthread_mutex_init (LOCK), 0)
+# define glthread_lock_lock(LOCK) \
+    glwthread_mutex_lock (LOCK)
+# define glthread_lock_unlock(LOCK) \
+    glwthread_mutex_unlock (LOCK)
+# define glthread_lock_destroy(LOCK) \
+    glwthread_mutex_destroy (LOCK)
+
+/* ------------------------- gl_rwlock_t datatype ------------------------- */
+
+typedef glwthread_rwlock_t gl_rwlock_t;
+# define gl_rwlock_define(STORAGECLASS, NAME) \
+    STORAGECLASS gl_rwlock_t NAME;
+# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
+    STORAGECLASS gl_rwlock_t NAME = gl_rwlock_initializer;
+# define gl_rwlock_initializer \
+    GLWTHREAD_RWLOCK_INIT
+# define glthread_rwlock_init(LOCK) \
+    (glwthread_rwlock_init (LOCK), 0)
+# define glthread_rwlock_rdlock(LOCK) \
+    glwthread_rwlock_rdlock (LOCK)
+# define glthread_rwlock_wrlock(LOCK) \
+    glwthread_rwlock_wrlock (LOCK)
+# define glthread_rwlock_unlock(LOCK) \
+    glwthread_rwlock_unlock (LOCK)
+# define glthread_rwlock_destroy(LOCK) \
+    glwthread_rwlock_destroy (LOCK)
+
+/* --------------------- gl_recursive_lock_t datatype --------------------- */
+
+typedef glwthread_recmutex_t gl_recursive_lock_t;
+# define gl_recursive_lock_define(STORAGECLASS, NAME) \
+    STORAGECLASS gl_recursive_lock_t NAME;
+# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
+    STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
+# define gl_recursive_lock_initializer \
+    GLWTHREAD_RECMUTEX_INIT
+# define glthread_recursive_lock_init(LOCK) \
+    (glwthread_recmutex_init (LOCK), 0)
+# define glthread_recursive_lock_lock(LOCK) \
+    glwthread_recmutex_lock (LOCK)
+# define glthread_recursive_lock_unlock(LOCK) \
+    glwthread_recmutex_unlock (LOCK)
+# define glthread_recursive_lock_destroy(LOCK) \
+    glwthread_recmutex_destroy (LOCK)
+
+/* -------------------------- gl_once_t datatype -------------------------- */
+
+typedef glwthread_once_t gl_once_t;
+# define gl_once_define(STORAGECLASS, NAME) \
+    STORAGECLASS gl_once_t NAME = GLWTHREAD_ONCE_INIT;
+# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
+    (glwthread_once (ONCE_CONTROL, INITFUNCTION), 0)
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if !(USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS)
+
+/* Provide dummy implementation if threads are not supported.  */
+
+/* -------------------------- gl_lock_t datatype -------------------------- */
+
+typedef int gl_lock_t;
+# define gl_lock_define(STORAGECLASS, NAME)
+# define gl_lock_define_initialized(STORAGECLASS, NAME)
+# define glthread_lock_init(NAME) 0
+# define glthread_lock_lock(NAME) 0
+# define glthread_lock_unlock(NAME) 0
+# define glthread_lock_destroy(NAME) 0
+
+/* ------------------------- gl_rwlock_t datatype ------------------------- */
+
+typedef int gl_rwlock_t;
+# define gl_rwlock_define(STORAGECLASS, NAME)
+# define gl_rwlock_define_initialized(STORAGECLASS, NAME)
+# define glthread_rwlock_init(NAME) 0
+# define glthread_rwlock_rdlock(NAME) 0
+# define glthread_rwlock_wrlock(NAME) 0
+# define glthread_rwlock_unlock(NAME) 0
+# define glthread_rwlock_destroy(NAME) 0
+
+/* --------------------- gl_recursive_lock_t datatype --------------------- */
+
+typedef int gl_recursive_lock_t;
+# define gl_recursive_lock_define(STORAGECLASS, NAME)
+# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME)
+# define glthread_recursive_lock_init(NAME) 0
+# define glthread_recursive_lock_lock(NAME) 0
+# define glthread_recursive_lock_unlock(NAME) 0
+# define glthread_recursive_lock_destroy(NAME) 0
+
+/* -------------------------- gl_once_t datatype -------------------------- */
+
+typedef int gl_once_t;
+# define gl_once_define(STORAGECLASS, NAME) \
+    STORAGECLASS gl_once_t NAME = 0;
+# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
+    (*(ONCE_CONTROL) == 0 ? (*(ONCE_CONTROL) = ~ 0, INITFUNCTION (), 0) : 0)
+
+#endif
+
+/* ========================================================================= */
+
+/* Macros with built-in error handling.  */
+
+/* -------------------------- gl_lock_t datatype -------------------------- */
+
+#define gl_lock_init(NAME) \
+   do                                  \
+     {                                 \
+       if (glthread_lock_init (&NAME)) \
+         abort ();                     \
+     }                                 \
+   while (0)
+#define gl_lock_lock(NAME) \
+   do                                  \
+     {                                 \
+       if (glthread_lock_lock (&NAME)) \
+         abort ();                     \
+     }                                 \
+   while (0)
+#define gl_lock_unlock(NAME) \
+   do                                    \
+     {                                   \
+       if (glthread_lock_unlock (&NAME)) \
+         abort ();                       \
+     }                                   \
+   while (0)
+#define gl_lock_destroy(NAME) \
+   do                                     \
+     {                                    \
+       if (glthread_lock_destroy (&NAME)) \
+         abort ();                        \
+     }                                    \
+   while (0)
+
+/* ------------------------- gl_rwlock_t datatype ------------------------- */
+
+#define gl_rwlock_init(NAME) \
+   do                                    \
+     {                                   \
+       if (glthread_rwlock_init (&NAME)) \
+         abort ();                       \
+     }                                   \
+   while (0)
+#define gl_rwlock_rdlock(NAME) \
+   do                                      \
+     {                                     \
+       if (glthread_rwlock_rdlock (&NAME)) \
+         abort ();                         \
+     }                                     \
+   while (0)
+#define gl_rwlock_wrlock(NAME) \
+   do                                      \
+     {                                     \
+       if (glthread_rwlock_wrlock (&NAME)) \
+         abort ();                         \
+     }                                     \
+   while (0)
+#define gl_rwlock_unlock(NAME) \
+   do                                      \
+     {                                     \
+       if (glthread_rwlock_unlock (&NAME)) \
+         abort ();                         \
+     }                                     \
+   while (0)
+#define gl_rwlock_destroy(NAME) \
+   do                                       \
+     {                                      \
+       if (glthread_rwlock_destroy (&NAME)) \
+         abort ();                          \
+     }                                      \
+   while (0)
+
+/* --------------------- gl_recursive_lock_t datatype --------------------- */
+
+#define gl_recursive_lock_init(NAME) \
+   do                                            \
+     {                                           \
+       if (glthread_recursive_lock_init (&NAME)) \
+         abort ();                               \
+     }                                           \
+   while (0)
+#define gl_recursive_lock_lock(NAME) \
+   do                                            \
+     {                                           \
+       if (glthread_recursive_lock_lock (&NAME)) \
+         abort ();                               \
+     }                                           \
+   while (0)
+#define gl_recursive_lock_unlock(NAME) \
+   do                                              \
+     {                                             \
+       if (glthread_recursive_lock_unlock (&NAME)) \
+         abort ();                                 \
+     }                                             \
+   while (0)
+#define gl_recursive_lock_destroy(NAME) \
+   do                                               \
+     {                                              \
+       if (glthread_recursive_lock_destroy (&NAME)) \
+         abort ();                                  \
+     }                                              \
+   while (0)
+
+/* -------------------------- gl_once_t datatype -------------------------- */
+
+#define gl_once(NAME, INITFUNCTION) \
+   do                                           \
+     {                                          \
+       if (glthread_once (&NAME, INITFUNCTION)) \
+         abort ();                              \
+     }                                          \
+   while (0)
+
+/* ========================================================================= */
+
+#endif /* _LOCK_H */
diff --git a/src/grep/lib/glthread/threadlib.c b/src/grep/lib/glthread/threadlib.c
new file mode 100644
index 0000000..793bc69
--- /dev/null
+++ b/src/grep/lib/glthread/threadlib.c
@@ -0,0 +1,108 @@
+/* Multithreading primitives.
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
+
+#include <config.h>
+
+/* ========================================================================= */
+
+#if USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS
+
+/* Use the POSIX threads library.  */
+
+# include <errno.h>
+# include <pthread.h>
+# include <stdlib.h>
+
+# if PTHREAD_IN_USE_DETECTION_HARD
+
+#  if defined __FreeBSD__ || defined __DragonFly__                 /* FreeBSD */
+
+/* Test using pthread_key_create.  */
+
+int
+glthread_in_use (void)
+{
+  static int tested;
+  static int result; /* 1: linked with -lpthread, 0: only with libc */
+
+  if (!tested)
+    {
+      pthread_key_t key;
+      int err = pthread_key_create (&key, NULL);
+
+      if (err == ENOSYS)
+        result = 0;
+      else
+        {
+          result = 1;
+          if (err == 0)
+            pthread_key_delete (key);
+        }
+      tested = 1;
+    }
+  return result;
+}
+
+#  else                                                     /* Solaris, HP-UX */
+
+/* Test using pthread_create.  */
+
+/* The function to be executed by a dummy thread.  */
+static void *
+dummy_thread_func (void *arg)
+{
+  return arg;
+}
+
+int
+glthread_in_use (void)
+{
+  static int tested;
+  static int result; /* 1: linked with -lpthread, 0: only with libc */
+
+  if (!tested)
+    {
+      pthread_t thread;
+
+      if (pthread_create (&thread, NULL, dummy_thread_func, NULL) != 0)
+        /* Thread creation failed.  */
+        result = 0;
+      else
+        {
+          /* Thread creation works.  */
+          void *retval;
+          if (pthread_join (thread, &retval) != 0)
+            abort ();
+          result = 1;
+        }
+      tested = 1;
+    }
+  return result;
+}
+
+#  endif
+
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+/* This declaration is solely to ensure that after preprocessing
+   this file is never empty.  */
+typedef int dummy;
diff --git a/src/grep/lib/gnulib.mk b/src/grep/lib/gnulib.mk
new file mode 100644
index 0000000..ae08701
--- /dev/null
+++ b/src/grep/lib/gnulib.mk
@@ -0,0 +1,3358 @@
+## DO NOT EDIT! GENERATED AUTOMATICALLY!
+## Process this file with automake to produce Makefile.in.
+# Copyright (C) 2002-2021 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file.  If not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License,
+# this file may be distributed as part of a program that
+# contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+# Reproduce by:
+# gnulib-tool --import --local-dir=gl \
+#  --lib=libgreputils \
+#  --source-base=lib \
+#  --m4-base=m4 \
+#  --doc-base=doc \
+#  --tests-base=gnulib-tests \
+#  --aux-dir=build-aux \
+#  --with-tests \
+#  --makefile-name=gnulib.mk \
+#  --no-conditional-dependencies \
+#  --no-libtool \
+#  --macro-prefix=gl \
+#  --avoid=lock-tests \
+#  --avoid=mbrtowc-tests \
+#  --avoid=update-copyright-tests \
+#  alloca \
+#  announce-gen \
+#  argmatch \
+#  c-ctype \
+#  c-stack \
+#  c-strcase \
+#  closeout \
+#  configmake \
+#  dfa \
+#  dirname-lgpl \
+#  do-release-commit-and-tag \
+#  error \
+#  exclude \
+#  fcntl-h \
+#  fdl \
+#  fnmatch \
+#  fstatat \
+#  fts \
+#  getopt-gnu \
+#  getpagesize \
+#  getprogname \
+#  gettext-h \
+#  git-version-gen \
+#  gitlog-to-changelog \
+#  gnu-web-doc-update \
+#  gnupload \
+#  hash \
+#  ignore-value \
+#  intprops \
+#  inttypes \
+#  isatty \
+#  isblank \
+#  iswctype \
+#  largefile \
+#  locale \
+#  lseek \
+#  maintainer-makefile \
+#  malloc-gnu \
+#  manywarnings \
+#  mbrlen \
+#  mbrtowc \
+#  memchr \
+#  memchr2 \
+#  mempcpy \
+#  minmax \
+#  obstack \
+#  openat-safer \
+#  perl \
+#  propername \
+#  rawmemchr \
+#  readme-release \
+#  realloc-gnu \
+#  regex \
+#  safe-read \
+#  same-inode \
+#  ssize_t \
+#  stddef \
+#  stdlib \
+#  stpcpy \
+#  strerror \
+#  string \
+#  strstr \
+#  strtoull \
+#  strtoumax \
+#  sys_stat \
+#  unistd \
+#  unlocked-io \
+#  update-copyright \
+#  useless-if-before-free \
+#  verify \
+#  version-etc-fsf \
+#  wchar \
+#  wcrtomb \
+#  wctob \
+#  wctype-h \
+#  windows-stat-inodes \
+#  xalloc \
+#  xbinary-io \
+#  xstrtoimax
+
+
+MOSTLYCLEANFILES += core *.stackdump
+# No GNU Make output.
+
+noinst_LIBRARIES += libgreputils.a
+
+libgreputils_a_SOURCES =
+libgreputils_a_LIBADD = $(gl_LIBOBJS)
+libgreputils_a_DEPENDENCIES = $(gl_LIBOBJS)
+EXTRA_libgreputils_a_SOURCES =
+
+## begin gnulib module absolute-header
+
+# Use this preprocessor expression to decide whether #include_next works.
+# Do not rely on a 'configure'-time test for this, since the expression
+# might appear in an installed header, which is used by some other compiler.
+HAVE_INCLUDE_NEXT = (__GNUC__ || __clang__ || 60000000 <= __DECC_VER)
+
+## end   gnulib module absolute-header
+
+## begin gnulib module alignof
+
+
+EXTRA_DIST += alignof.h
+
+## end   gnulib module alignof
+
+## begin gnulib module alloca
+
+
+libgreputils_a_LIBADD += @ALLOCA@
+libgreputils_a_DEPENDENCIES += @ALLOCA@
+EXTRA_DIST += alloca.c
+
+EXTRA_libgreputils_a_SOURCES += alloca.c
+
+## end   gnulib module alloca
+
+## begin gnulib module alloca-opt
+
+BUILT_SOURCES += $(ALLOCA_H)
+
+# We need the following in order to create <alloca.h> when the system
+# doesn't have one that works with the given compiler.
+if GL_GENERATE_ALLOCA_H
+alloca.h: alloca.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''HAVE_ALLOCA_H''@|$(HAVE_ALLOCA_H)|g' < $(srcdir)/alloca.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+else
+alloca.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += alloca.h alloca.h-t
+
+EXTRA_DIST += alloca.in.h
+
+## end   gnulib module alloca-opt
+
+## begin gnulib module announce-gen
+
+
+EXTRA_DIST += $(top_srcdir)/build-aux/announce-gen
+
+## end   gnulib module announce-gen
+
+## begin gnulib module argmatch
+
+libgreputils_a_SOURCES += argmatch.c
+
+EXTRA_DIST += argmatch.h
+
+## end   gnulib module argmatch
+
+## begin gnulib module assure
+
+
+EXTRA_DIST += assure.h
+
+## end   gnulib module assure
+
+## begin gnulib module at-internal
+
+libgreputils_a_SOURCES += openat-priv.h openat-proc.c
+
+## end   gnulib module at-internal
+
+## begin gnulib module attribute
+
+
+EXTRA_DIST += attribute.h
+
+## end   gnulib module attribute
+
+## begin gnulib module basename-lgpl
+
+libgreputils_a_SOURCES += basename-lgpl.c
+
+EXTRA_DIST += basename-lgpl.h
+
+## end   gnulib module basename-lgpl
+
+## begin gnulib module binary-io
+
+libgreputils_a_SOURCES += binary-io.h binary-io.c
+
+## end   gnulib module binary-io
+
+## begin gnulib module bitrotate
+
+libgreputils_a_SOURCES += bitrotate.h bitrotate.c
+
+## end   gnulib module bitrotate
+
+## begin gnulib module btowc
+
+
+EXTRA_DIST += btowc.c
+
+EXTRA_libgreputils_a_SOURCES += btowc.c
+
+## end   gnulib module btowc
+
+## begin gnulib module c-ctype
+
+libgreputils_a_SOURCES += c-ctype.h c-ctype.c
+
+## end   gnulib module c-ctype
+
+## begin gnulib module c-stack
+
+libgreputils_a_SOURCES += c-stack.h c-stack.c
+
+## end   gnulib module c-stack
+
+## begin gnulib module c-strcase
+
+libgreputils_a_SOURCES += c-strcase.h c-strcasecmp.c c-strncasecmp.c
+
+## end   gnulib module c-strcase
+
+## begin gnulib module c-strcaseeq
+
+
+EXTRA_DIST += c-strcaseeq.h
+
+## end   gnulib module c-strcaseeq
+
+## begin gnulib module calloc-gnu
+
+
+EXTRA_DIST += calloc.c
+
+EXTRA_libgreputils_a_SOURCES += calloc.c
+
+## end   gnulib module calloc-gnu
+
+## begin gnulib module calloc-posix
+
+
+EXTRA_DIST += calloc.c
+
+EXTRA_libgreputils_a_SOURCES += calloc.c
+
+## end   gnulib module calloc-posix
+
+## begin gnulib module chdir-long
+
+
+EXTRA_DIST += chdir-long.c chdir-long.h
+
+EXTRA_libgreputils_a_SOURCES += chdir-long.c
+
+## end   gnulib module chdir-long
+
+## begin gnulib module cloexec
+
+libgreputils_a_SOURCES += cloexec.c
+
+EXTRA_DIST += cloexec.h
+
+## end   gnulib module cloexec
+
+## begin gnulib module close
+
+
+EXTRA_DIST += close.c
+
+EXTRA_libgreputils_a_SOURCES += close.c
+
+## end   gnulib module close
+
+## begin gnulib module close-stream
+
+libgreputils_a_SOURCES += close-stream.c
+
+EXTRA_DIST += close-stream.h
+
+## end   gnulib module close-stream
+
+## begin gnulib module closedir
+
+
+EXTRA_DIST += closedir.c dirent-private.h
+
+EXTRA_libgreputils_a_SOURCES += closedir.c
+
+## end   gnulib module closedir
+
+## begin gnulib module closeout
+
+libgreputils_a_SOURCES += closeout.c
+
+EXTRA_DIST += closeout.h
+
+## end   gnulib module closeout
+
+## begin gnulib module configmake
+
+# Listed in the same order as the GNU makefile conventions, and
+# provided by autoconf 2.59c+ or 2.70.
+# The Automake-defined pkg* macros are appended, in the order
+# listed in the Automake 1.10a+ documentation.
+configmake.h: Makefile
+	$(AM_V_GEN)rm -f $@-t && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  echo '#if HAVE_WINSOCK2_H'; \
+	  echo '# include <winsock2.h> /* avoid mingw pollution on DATADIR */'; \
+	  echo '#endif'; \
+	  echo '#define PREFIX "$(prefix)"'; \
+	  echo '#define EXEC_PREFIX "$(exec_prefix)"'; \
+	  echo '#define BINDIR "$(bindir)"'; \
+	  echo '#define SBINDIR "$(sbindir)"'; \
+	  echo '#define LIBEXECDIR "$(libexecdir)"'; \
+	  echo '#define DATAROOTDIR "$(datarootdir)"'; \
+	  echo '#define DATADIR "$(datadir)"'; \
+	  echo '#define SYSCONFDIR "$(sysconfdir)"'; \
+	  echo '#define SHAREDSTATEDIR "$(sharedstatedir)"'; \
+	  echo '#define LOCALSTATEDIR "$(localstatedir)"'; \
+	  echo '#define RUNSTATEDIR "$(runstatedir)"'; \
+	  echo '#define INCLUDEDIR "$(includedir)"'; \
+	  echo '#define OLDINCLUDEDIR "$(oldincludedir)"'; \
+	  echo '#define DOCDIR "$(docdir)"'; \
+	  echo '#define INFODIR "$(infodir)"'; \
+	  echo '#define HTMLDIR "$(htmldir)"'; \
+	  echo '#define DVIDIR "$(dvidir)"'; \
+	  echo '#define PDFDIR "$(pdfdir)"'; \
+	  echo '#define PSDIR "$(psdir)"'; \
+	  echo '#define LIBDIR "$(libdir)"'; \
+	  echo '#define LISPDIR "$(lispdir)"'; \
+	  echo '#define LOCALEDIR "$(localedir)"'; \
+	  echo '#define MANDIR "$(mandir)"'; \
+	  echo '#define MANEXT "$(manext)"'; \
+	  echo '#define PKGDATADIR "$(pkgdatadir)"'; \
+	  echo '#define PKGINCLUDEDIR "$(pkgincludedir)"'; \
+	  echo '#define PKGLIBDIR "$(pkglibdir)"'; \
+	  echo '#define PKGLIBEXECDIR "$(pkglibexecdir)"'; \
+	} | sed '/""/d' > $@-t && \
+	mv -f $@-t $@
+
+BUILT_SOURCES += configmake.h
+CLEANFILES += configmake.h configmake.h-t
+
+## end   gnulib module configmake
+
+## begin gnulib module ctype
+
+BUILT_SOURCES += ctype.h
+
+# We need the following in order to create <ctype.h> when the system
+# doesn't have one that works with the given compiler.
+ctype.h: ctype.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_CTYPE_H''@|$(NEXT_CTYPE_H)|g' \
+	      -e 's/@''GNULIB_ISBLANK''@/$(GL_GNULIB_ISBLANK)/g' \
+	      -e 's/@''HAVE_ISBLANK''@/$(HAVE_ISBLANK)/g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/ctype.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += ctype.h ctype.h-t
+
+EXTRA_DIST += ctype.in.h
+
+## end   gnulib module ctype
+
+## begin gnulib module cycle-check
+
+libgreputils_a_SOURCES += cycle-check.c
+
+EXTRA_DIST += cycle-check.h
+
+## end   gnulib module cycle-check
+
+## begin gnulib module dev-ino
+
+
+EXTRA_DIST += dev-ino.h
+
+## end   gnulib module dev-ino
+
+## begin gnulib module dfa
+
+libgreputils_a_SOURCES += dfa.c localeinfo.c
+
+EXTRA_DIST += dfa.h localeinfo.h
+
+## end   gnulib module dfa
+
+## begin gnulib module dirent
+
+BUILT_SOURCES += dirent.h
+
+# We need the following in order to create <dirent.h> when the system
+# doesn't have one that works with the given compiler.
+dirent.h: dirent.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_DIRENT_H''@|$(HAVE_DIRENT_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_DIRENT_H''@|$(NEXT_DIRENT_H)|g' \
+	      -e 's/@''GNULIB_OPENDIR''@/$(GL_GNULIB_OPENDIR)/g' \
+	      -e 's/@''GNULIB_READDIR''@/$(GL_GNULIB_READDIR)/g' \
+	      -e 's/@''GNULIB_REWINDDIR''@/$(GL_GNULIB_REWINDDIR)/g' \
+	      -e 's/@''GNULIB_CLOSEDIR''@/$(GL_GNULIB_CLOSEDIR)/g' \
+	      -e 's/@''GNULIB_DIRFD''@/$(GL_GNULIB_DIRFD)/g' \
+	      -e 's/@''GNULIB_FDOPENDIR''@/$(GL_GNULIB_FDOPENDIR)/g' \
+	      -e 's/@''GNULIB_SCANDIR''@/$(GL_GNULIB_SCANDIR)/g' \
+	      -e 's/@''GNULIB_ALPHASORT''@/$(GL_GNULIB_ALPHASORT)/g' \
+	      -e 's/@''HAVE_OPENDIR''@/$(HAVE_OPENDIR)/g' \
+	      -e 's/@''HAVE_READDIR''@/$(HAVE_READDIR)/g' \
+	      -e 's/@''HAVE_REWINDDIR''@/$(HAVE_REWINDDIR)/g' \
+	      -e 's/@''HAVE_CLOSEDIR''@/$(HAVE_CLOSEDIR)/g' \
+	      -e 's|@''HAVE_DECL_DIRFD''@|$(HAVE_DECL_DIRFD)|g' \
+	      -e 's|@''HAVE_DECL_FDOPENDIR''@|$(HAVE_DECL_FDOPENDIR)|g' \
+	      -e 's|@''HAVE_FDOPENDIR''@|$(HAVE_FDOPENDIR)|g' \
+	      -e 's|@''HAVE_SCANDIR''@|$(HAVE_SCANDIR)|g' \
+	      -e 's|@''HAVE_ALPHASORT''@|$(HAVE_ALPHASORT)|g' \
+	      -e 's|@''REPLACE_OPENDIR''@|$(REPLACE_OPENDIR)|g' \
+	      -e 's|@''REPLACE_CLOSEDIR''@|$(REPLACE_CLOSEDIR)|g' \
+	      -e 's|@''REPLACE_DIRFD''@|$(REPLACE_DIRFD)|g' \
+	      -e 's|@''REPLACE_FDOPENDIR''@|$(REPLACE_FDOPENDIR)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/dirent.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += dirent.h dirent.h-t
+
+EXTRA_DIST += dirent.in.h
+
+## end   gnulib module dirent
+
+## begin gnulib module dirfd
+
+
+EXTRA_DIST += dirfd.c
+
+EXTRA_libgreputils_a_SOURCES += dirfd.c
+
+## end   gnulib module dirfd
+
+## begin gnulib module dirname-lgpl
+
+libgreputils_a_SOURCES += dirname-lgpl.c stripslash.c
+
+EXTRA_DIST += dirname.h
+
+## end   gnulib module dirname-lgpl
+
+## begin gnulib module do-release-commit-and-tag
+
+
+EXTRA_DIST += $(top_srcdir)/build-aux/do-release-commit-and-tag
+
+## end   gnulib module do-release-commit-and-tag
+
+## begin gnulib module dup
+
+
+EXTRA_DIST += dup.c
+
+EXTRA_libgreputils_a_SOURCES += dup.c
+
+## end   gnulib module dup
+
+## begin gnulib module dup2
+
+
+EXTRA_DIST += dup2.c
+
+EXTRA_libgreputils_a_SOURCES += dup2.c
+
+## end   gnulib module dup2
+
+## begin gnulib module dynarray
+
+BUILT_SOURCES += malloc/dynarray.gl.h malloc/dynarray-skeleton.gl.h
+
+malloc/dynarray.gl.h: malloc/dynarray.h
+	$(AM_V_at)$(MKDIR_P) malloc
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e '/libc_hidden_proto/d' < $(srcdir)/malloc/dynarray.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += malloc/dynarray.gl.h malloc/dynarray.gl.h-t
+
+malloc/dynarray-skeleton.gl.h: malloc/dynarray-skeleton.c
+	$(AM_V_at)$(MKDIR_P) malloc
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|<malloc/dynarray\.h>|<malloc/dynarray.gl.h>|g' \
+	      -e 's|__attribute_maybe_unused__|_GL_ATTRIBUTE_MAYBE_UNUSED|g' \
+	      -e 's|__attribute_nonnull__|_GL_ATTRIBUTE_NONNULL|g' \
+	      -e 's|__attribute_warn_unused_result__|_GL_ATTRIBUTE_NODISCARD|g' \
+	      -e 's|__glibc_likely|_GL_LIKELY|g' \
+	      -e 's|__glibc_unlikely|_GL_UNLIKELY|g' \
+	      < $(srcdir)/malloc/dynarray-skeleton.c; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += malloc/dynarray-skeleton.gl.h malloc/dynarray-skeleton.gl.h-t
+
+libgreputils_a_SOURCES += malloc/dynarray_at_failure.c                 malloc/dynarray_emplace_enlarge.c                 malloc/dynarray_finalize.c                 malloc/dynarray_resize.c                 malloc/dynarray_resize_clear.c
+
+EXTRA_DIST += dynarray.h malloc/dynarray-skeleton.c malloc/dynarray.h
+
+EXTRA_libgreputils_a_SOURCES += malloc/dynarray-skeleton.c
+
+## end   gnulib module dynarray
+
+## begin gnulib module errno
+
+BUILT_SOURCES += $(ERRNO_H)
+
+# We need the following in order to create <errno.h> when the system
+# doesn't have one that is POSIX compliant.
+if GL_GENERATE_ERRNO_H
+errno.h: errno.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_ERRNO_H''@|$(NEXT_ERRNO_H)|g' \
+	      -e 's|@''EMULTIHOP_HIDDEN''@|$(EMULTIHOP_HIDDEN)|g' \
+	      -e 's|@''EMULTIHOP_VALUE''@|$(EMULTIHOP_VALUE)|g' \
+	      -e 's|@''ENOLINK_HIDDEN''@|$(ENOLINK_HIDDEN)|g' \
+	      -e 's|@''ENOLINK_VALUE''@|$(ENOLINK_VALUE)|g' \
+	      -e 's|@''EOVERFLOW_HIDDEN''@|$(EOVERFLOW_HIDDEN)|g' \
+	      -e 's|@''EOVERFLOW_VALUE''@|$(EOVERFLOW_VALUE)|g' \
+	      < $(srcdir)/errno.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+else
+errno.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += errno.h errno.h-t
+
+EXTRA_DIST += errno.in.h
+
+## end   gnulib module errno
+
+## begin gnulib module error
+
+
+EXTRA_DIST += error.c error.h
+
+EXTRA_libgreputils_a_SOURCES += error.c
+
+## end   gnulib module error
+
+## begin gnulib module exclude
+
+libgreputils_a_SOURCES += exclude.c
+
+EXTRA_DIST += exclude.h
+
+## end   gnulib module exclude
+
+## begin gnulib module exitfail
+
+libgreputils_a_SOURCES += exitfail.c
+
+EXTRA_DIST += exitfail.h
+
+## end   gnulib module exitfail
+
+## begin gnulib module fchdir
+
+
+EXTRA_DIST += fchdir.c
+
+EXTRA_libgreputils_a_SOURCES += fchdir.c
+
+## end   gnulib module fchdir
+
+## begin gnulib module fcntl
+
+
+EXTRA_DIST += fcntl.c
+
+EXTRA_libgreputils_a_SOURCES += fcntl.c
+
+## end   gnulib module fcntl
+
+## begin gnulib module fcntl-h
+
+BUILT_SOURCES += fcntl.h
+
+# We need the following in order to create <fcntl.h> when the system
+# doesn't have one that works with the given compiler.
+fcntl.h: fcntl.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_FCNTL_H''@|$(NEXT_FCNTL_H)|g' \
+	      -e 's/@''GNULIB_CREAT''@/$(GL_GNULIB_CREAT)/g' \
+	      -e 's/@''GNULIB_FCNTL''@/$(GL_GNULIB_FCNTL)/g' \
+	      -e 's/@''GNULIB_NONBLOCKING''@/$(GL_GNULIB_NONBLOCKING)/g' \
+	      -e 's/@''GNULIB_OPEN''@/$(GL_GNULIB_OPEN)/g' \
+	      -e 's/@''GNULIB_OPENAT''@/$(GL_GNULIB_OPENAT)/g' \
+	      -e 's/@''GNULIB_MDA_CREAT''@/$(GL_GNULIB_MDA_CREAT)/g' \
+	      -e 's/@''GNULIB_MDA_OPEN''@/$(GL_GNULIB_MDA_OPEN)/g' \
+	      -e 's|@''HAVE_FCNTL''@|$(HAVE_FCNTL)|g' \
+	      -e 's|@''HAVE_OPENAT''@|$(HAVE_OPENAT)|g' \
+	      -e 's|@''REPLACE_CREAT''@|$(REPLACE_CREAT)|g' \
+	      -e 's|@''REPLACE_FCNTL''@|$(REPLACE_FCNTL)|g' \
+	      -e 's|@''REPLACE_OPEN''@|$(REPLACE_OPEN)|g' \
+	      -e 's|@''REPLACE_OPENAT''@|$(REPLACE_OPENAT)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/fcntl.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += fcntl.h fcntl.h-t
+
+EXTRA_DIST += fcntl.in.h
+
+## end   gnulib module fcntl-h
+
+## begin gnulib module fcntl-safer
+
+libgreputils_a_SOURCES += creat-safer.c open-safer.c
+
+EXTRA_DIST += fcntl--.h fcntl-safer.h
+
+## end   gnulib module fcntl-safer
+
+## begin gnulib module fd-hook
+
+libgreputils_a_SOURCES += fd-hook.c
+
+EXTRA_DIST += fd-hook.h
+
+## end   gnulib module fd-hook
+
+## begin gnulib module fd-safer-flag
+
+libgreputils_a_SOURCES += fd-safer-flag.c dup-safer-flag.c
+
+## end   gnulib module fd-safer-flag
+
+## begin gnulib module fdopendir
+
+
+EXTRA_DIST += fdopendir.c
+
+EXTRA_libgreputils_a_SOURCES += fdopendir.c
+
+## end   gnulib module fdopendir
+
+## begin gnulib module filename
+
+
+EXTRA_DIST += filename.h
+
+## end   gnulib module filename
+
+## begin gnulib module filenamecat-lgpl
+
+libgreputils_a_SOURCES += filenamecat-lgpl.c
+
+EXTRA_DIST += filenamecat.h
+
+## end   gnulib module filenamecat-lgpl
+
+## begin gnulib module flexmember
+
+
+EXTRA_DIST += flexmember.h
+
+## end   gnulib module flexmember
+
+## begin gnulib module fnmatch
+
+
+EXTRA_DIST += fnmatch.c fnmatch_loop.c
+
+EXTRA_libgreputils_a_SOURCES += fnmatch.c fnmatch_loop.c
+
+## end   gnulib module fnmatch
+
+## begin gnulib module fnmatch-h
+
+BUILT_SOURCES += $(FNMATCH_H)
+
+# We need the following in order to create <fnmatch.h>.
+if GL_GENERATE_FNMATCH_H
+fnmatch.h: fnmatch.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_FNMATCH_H''@|$(HAVE_FNMATCH_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_FNMATCH_H''@|$(NEXT_FNMATCH_H)|g' \
+	      -e 's/@''GNULIB_FNMATCH''@/$(GL_GNULIB_FNMATCH)/g' \
+	      -e 's|@''HAVE_FNMATCH''@|$(HAVE_FNMATCH)|g' \
+	      -e 's|@''REPLACE_FNMATCH''@|$(REPLACE_FNMATCH)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/fnmatch.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+else
+fnmatch.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += fnmatch.h fnmatch.h-t
+
+EXTRA_DIST += fnmatch.in.h
+
+## end   gnulib module fnmatch-h
+
+## begin gnulib module fopen
+
+
+EXTRA_DIST += fopen.c
+
+EXTRA_libgreputils_a_SOURCES += fopen.c
+
+## end   gnulib module fopen
+
+## begin gnulib module fopen-gnu
+
+
+EXTRA_DIST += fopen.c
+
+EXTRA_libgreputils_a_SOURCES += fopen.c
+
+## end   gnulib module fopen-gnu
+
+## begin gnulib module fpending
+
+
+EXTRA_DIST += fpending.c fpending.h stdio-impl.h
+
+EXTRA_libgreputils_a_SOURCES += fpending.c
+
+## end   gnulib module fpending
+
+## begin gnulib module free-posix
+
+
+EXTRA_DIST += free.c
+
+EXTRA_libgreputils_a_SOURCES += free.c
+
+## end   gnulib module free-posix
+
+## begin gnulib module fstat
+
+
+EXTRA_DIST += fstat.c stat-w32.c stat-w32.h
+
+EXTRA_libgreputils_a_SOURCES += fstat.c stat-w32.c
+
+## end   gnulib module fstat
+
+## begin gnulib module fstatat
+
+
+EXTRA_DIST += at-func.c fstatat.c
+
+EXTRA_libgreputils_a_SOURCES += at-func.c fstatat.c
+
+## end   gnulib module fstatat
+
+## begin gnulib module fts
+
+
+EXTRA_DIST += fts-cycle.c fts.c fts_.h
+
+EXTRA_libgreputils_a_SOURCES += fts-cycle.c fts.c
+
+## end   gnulib module fts
+
+## begin gnulib module gendocs
+
+
+EXTRA_DIST += $(top_srcdir)/build-aux/gendocs.sh
+
+## end   gnulib module gendocs
+
+## begin gnulib module getcwd-lgpl
+
+
+EXTRA_DIST += getcwd-lgpl.c
+
+EXTRA_libgreputils_a_SOURCES += getcwd-lgpl.c
+
+## end   gnulib module getcwd-lgpl
+
+## begin gnulib module getdtablesize
+
+
+EXTRA_DIST += getdtablesize.c
+
+EXTRA_libgreputils_a_SOURCES += getdtablesize.c
+
+## end   gnulib module getdtablesize
+
+## begin gnulib module getopt-posix
+
+BUILT_SOURCES += $(GETOPT_H) $(GETOPT_CDEFS_H)
+
+# We need the following in order to create <getopt.h> when the system
+# doesn't have one that works with the given compiler.
+getopt.h: getopt.in.h $(top_builddir)/config.status $(ARG_NONNULL_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_GETOPT_H''@|$(HAVE_GETOPT_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_GETOPT_H''@|$(NEXT_GETOPT_H)|g' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      < $(srcdir)/getopt.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+getopt-cdefs.h: getopt-cdefs.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+          sed -e 's|@''HAVE_SYS_CDEFS_H''@|$(HAVE_SYS_CDEFS_H)|g' \
+	      < $(srcdir)/getopt-cdefs.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+MOSTLYCLEANFILES += getopt.h getopt.h-t getopt-cdefs.h getopt-cdefs.h-t
+
+EXTRA_DIST += getopt-cdefs.in.h getopt-core.h getopt-ext.h getopt-pfx-core.h getopt-pfx-ext.h getopt.c getopt.in.h getopt1.c getopt_int.h
+
+EXTRA_libgreputils_a_SOURCES += getopt.c getopt1.c
+
+## end   gnulib module getopt-posix
+
+## begin gnulib module getpagesize
+
+
+EXTRA_DIST += getpagesize.c
+
+EXTRA_libgreputils_a_SOURCES += getpagesize.c
+
+## end   gnulib module getpagesize
+
+## begin gnulib module getprogname
+
+libgreputils_a_SOURCES += getprogname.h getprogname.c
+
+## end   gnulib module getprogname
+
+## begin gnulib module gettext-h
+
+libgreputils_a_SOURCES += gettext.h
+
+## end   gnulib module gettext-h
+
+## begin gnulib module git-version-gen
+
+
+EXTRA_DIST += $(top_srcdir)/build-aux/git-version-gen
+
+## end   gnulib module git-version-gen
+
+## begin gnulib module gitlog-to-changelog
+
+
+EXTRA_DIST += $(top_srcdir)/build-aux/gitlog-to-changelog
+
+## end   gnulib module gitlog-to-changelog
+
+## begin gnulib module gnu-web-doc-update
+
+
+EXTRA_DIST += $(top_srcdir)/build-aux/gnu-web-doc-update
+
+## end   gnulib module gnu-web-doc-update
+
+## begin gnulib module gnumakefile
+
+EXTRA_DIST += $(top_srcdir)/GNUmakefile
+distclean-local: clean-GNUmakefile
+clean-GNUmakefile:
+	test '$(srcdir)' = . || rm -f $(top_builddir)/GNUmakefile
+
+## end   gnulib module gnumakefile
+
+## begin gnulib module gnupload
+
+
+EXTRA_DIST += $(top_srcdir)/build-aux/gnupload
+
+## end   gnulib module gnupload
+
+## begin gnulib module gperf
+
+GPERF = gperf
+V_GPERF = $(V_GPERF_@AM_V@)
+V_GPERF_ = $(V_GPERF_@AM_DEFAULT_V@)
+V_GPERF_0 = @echo "  GPERF   " $@;
+
+## end   gnulib module gperf
+
+## begin gnulib module hard-locale
+
+libgreputils_a_SOURCES += hard-locale.c
+
+EXTRA_DIST += hard-locale.h
+
+## end   gnulib module hard-locale
+
+## begin gnulib module hash
+
+libgreputils_a_SOURCES += hash.c
+
+EXTRA_DIST += hash.h
+
+## end   gnulib module hash
+
+## begin gnulib module havelib
+
+
+EXTRA_DIST += $(top_srcdir)/build-aux/config.rpath
+
+## end   gnulib module havelib
+
+## begin gnulib module i-ring
+
+libgreputils_a_SOURCES += i-ring.c
+
+EXTRA_DIST += i-ring.h
+
+## end   gnulib module i-ring
+
+## begin gnulib module ialloc
+
+libgreputils_a_SOURCES += ialloc.c
+
+EXTRA_DIST += ialloc.h
+
+## end   gnulib module ialloc
+
+## begin gnulib module iconv-h
+
+BUILT_SOURCES += $(ICONV_H)
+
+# We need the following in order to create <iconv.h> when the system
+# doesn't have one that works with the given compiler.
+if GL_GENERATE_ICONV_H
+iconv.h: iconv.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_ICONV_H''@|$(NEXT_ICONV_H)|g' \
+	      -e 's/@''GNULIB_ICONV''@/$(GL_GNULIB_ICONV)/g' \
+	      -e 's|@''ICONV_CONST''@|$(ICONV_CONST)|g' \
+	      -e 's|@''REPLACE_ICONV''@|$(REPLACE_ICONV)|g' \
+	      -e 's|@''REPLACE_ICONV_OPEN''@|$(REPLACE_ICONV_OPEN)|g' \
+	      -e 's|@''REPLACE_ICONV_UTF''@|$(REPLACE_ICONV_UTF)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/iconv.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+else
+iconv.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += iconv.h iconv.h-t
+
+EXTRA_DIST += iconv.in.h
+
+## end   gnulib module iconv-h
+
+## begin gnulib module iconv_open
+
+$(srcdir)/iconv_open-aix.h: $(srcdir)/iconv_open-aix.gperf
+	$(V_GPERF)$(GPERF) -m 10 $(srcdir)/iconv_open-aix.gperf > $(srcdir)/iconv_open-aix.h-t && \
+	mv $(srcdir)/iconv_open-aix.h-t $(srcdir)/iconv_open-aix.h
+$(srcdir)/iconv_open-hpux.h: $(srcdir)/iconv_open-hpux.gperf
+	$(V_GPERF)$(GPERF) -m 10 $(srcdir)/iconv_open-hpux.gperf > $(srcdir)/iconv_open-hpux.h-t && \
+	mv $(srcdir)/iconv_open-hpux.h-t $(srcdir)/iconv_open-hpux.h
+$(srcdir)/iconv_open-irix.h: $(srcdir)/iconv_open-irix.gperf
+	$(V_GPERF)$(GPERF) -m 10 $(srcdir)/iconv_open-irix.gperf > $(srcdir)/iconv_open-irix.h-t && \
+	mv $(srcdir)/iconv_open-irix.h-t $(srcdir)/iconv_open-irix.h
+$(srcdir)/iconv_open-osf.h: $(srcdir)/iconv_open-osf.gperf
+	$(V_GPERF)$(GPERF) -m 10 $(srcdir)/iconv_open-osf.gperf > $(srcdir)/iconv_open-osf.h-t && \
+	mv $(srcdir)/iconv_open-osf.h-t $(srcdir)/iconv_open-osf.h
+$(srcdir)/iconv_open-solaris.h: $(srcdir)/iconv_open-solaris.gperf
+	$(V_GPERF)$(GPERF) -m 10 $(srcdir)/iconv_open-solaris.gperf > $(srcdir)/iconv_open-solaris.h-t && \
+	mv $(srcdir)/iconv_open-solaris.h-t $(srcdir)/iconv_open-solaris.h
+$(srcdir)/iconv_open-zos.h: $(srcdir)/iconv_open-zos.gperf
+	$(V_GPERF)$(GPERF) -m 10 $(srcdir)/iconv_open-zos.gperf > $(srcdir)/iconv_open-zos.h-t && \
+	mv $(srcdir)/iconv_open-zos.h-t $(srcdir)/iconv_open-zos.h
+BUILT_SOURCES        += iconv_open-aix.h iconv_open-hpux.h iconv_open-irix.h iconv_open-osf.h iconv_open-solaris.h iconv_open-zos.h
+MOSTLYCLEANFILES     += iconv_open-aix.h-t iconv_open-hpux.h-t iconv_open-irix.h-t iconv_open-osf.h-t iconv_open-solaris.h-t iconv_open-zos.h-t
+MAINTAINERCLEANFILES += iconv_open-aix.h iconv_open-hpux.h iconv_open-irix.h iconv_open-osf.h iconv_open-solaris.h iconv_open-zos.h
+EXTRA_DIST           += iconv_open-aix.h iconv_open-hpux.h iconv_open-irix.h iconv_open-osf.h iconv_open-solaris.h iconv_open-zos.h
+
+EXTRA_DIST += iconv.c iconv_close.c iconv_open-aix.gperf iconv_open-hpux.gperf iconv_open-irix.gperf iconv_open-osf.gperf iconv_open-solaris.gperf iconv_open-zos.gperf iconv_open.c
+
+EXTRA_libgreputils_a_SOURCES += iconv.c iconv_close.c iconv_open.c
+
+## end   gnulib module iconv_open
+
+## begin gnulib module idx
+
+libgreputils_a_SOURCES += idx.h
+
+## end   gnulib module idx
+
+## begin gnulib module ignore-value
+
+
+EXTRA_DIST += ignore-value.h
+
+## end   gnulib module ignore-value
+
+## begin gnulib module intprops
+
+
+EXTRA_DIST += intprops.h
+
+## end   gnulib module intprops
+
+## begin gnulib module inttypes-incomplete
+
+BUILT_SOURCES += inttypes.h
+
+# We need the following in order to create <inttypes.h> when the system
+# doesn't have one that works with the given compiler.
+inttypes.h: inttypes.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H) $(ARG_NONNULL_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's/@''HAVE_INTTYPES_H''@/$(HAVE_INTTYPES_H)/g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_INTTYPES_H''@|$(NEXT_INTTYPES_H)|g' \
+	      -e 's/@''APPLE_UNIVERSAL_BUILD''@/$(APPLE_UNIVERSAL_BUILD)/g' \
+	      -e 's/@''PRIPTR_PREFIX''@/$(PRIPTR_PREFIX)/g' \
+	      -e 's/@''GNULIB_IMAXABS''@/$(GL_GNULIB_IMAXABS)/g' \
+	      -e 's/@''GNULIB_IMAXDIV''@/$(GL_GNULIB_IMAXDIV)/g' \
+	      -e 's/@''GNULIB_STRTOIMAX''@/$(GL_GNULIB_STRTOIMAX)/g' \
+	      -e 's/@''GNULIB_STRTOUMAX''@/$(GL_GNULIB_STRTOUMAX)/g' \
+	      -e 's/@''HAVE_DECL_IMAXABS''@/$(HAVE_DECL_IMAXABS)/g' \
+	      -e 's/@''HAVE_DECL_IMAXDIV''@/$(HAVE_DECL_IMAXDIV)/g' \
+	      -e 's/@''HAVE_DECL_STRTOIMAX''@/$(HAVE_DECL_STRTOIMAX)/g' \
+	      -e 's/@''HAVE_DECL_STRTOUMAX''@/$(HAVE_DECL_STRTOUMAX)/g' \
+	      -e 's/@''HAVE_IMAXDIV_T''@/$(HAVE_IMAXDIV_T)/g' \
+	      -e 's/@''REPLACE_STRTOIMAX''@/$(REPLACE_STRTOIMAX)/g' \
+	      -e 's/@''REPLACE_STRTOUMAX''@/$(REPLACE_STRTOUMAX)/g' \
+	      -e 's/@''INT32_MAX_LT_INTMAX_MAX''@/$(INT32_MAX_LT_INTMAX_MAX)/g' \
+	      -e 's/@''INT64_MAX_EQ_LONG_MAX''@/$(INT64_MAX_EQ_LONG_MAX)/g' \
+	      -e 's/@''UINT32_MAX_LT_UINTMAX_MAX''@/$(UINT32_MAX_LT_UINTMAX_MAX)/g' \
+	      -e 's/@''UINT64_MAX_EQ_ULONG_MAX''@/$(UINT64_MAX_EQ_ULONG_MAX)/g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/inttypes.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += inttypes.h inttypes.h-t
+
+EXTRA_DIST += inttypes.in.h
+
+## end   gnulib module inttypes-incomplete
+
+## begin gnulib module isatty
+
+
+EXTRA_DIST += isatty.c
+
+EXTRA_libgreputils_a_SOURCES += isatty.c
+
+## end   gnulib module isatty
+
+## begin gnulib module isblank
+
+
+EXTRA_DIST += isblank.c
+
+EXTRA_libgreputils_a_SOURCES += isblank.c
+
+## end   gnulib module isblank
+
+## begin gnulib module iswblank
+
+
+EXTRA_DIST += iswblank.c
+
+EXTRA_libgreputils_a_SOURCES += iswblank.c
+
+## end   gnulib module iswblank
+
+## begin gnulib module iswctype
+
+
+EXTRA_DIST += iswctype-impl.h iswctype.c
+
+EXTRA_libgreputils_a_SOURCES += iswctype.c
+
+## end   gnulib module iswctype
+
+## begin gnulib module iswdigit
+
+
+EXTRA_DIST += iswdigit.c
+
+EXTRA_libgreputils_a_SOURCES += iswdigit.c
+
+## end   gnulib module iswdigit
+
+## begin gnulib module iswxdigit
+
+
+EXTRA_DIST += iswxdigit.c
+
+EXTRA_libgreputils_a_SOURCES += iswxdigit.c
+
+## end   gnulib module iswxdigit
+
+## begin gnulib module langinfo
+
+BUILT_SOURCES += langinfo.h
+
+# We need the following in order to create an empty placeholder for
+# <langinfo.h> when the system doesn't have one.
+langinfo.h: langinfo.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_LANGINFO_H''@|$(HAVE_LANGINFO_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_LANGINFO_H''@|$(NEXT_LANGINFO_H)|g' \
+	      -e 's/@''GNULIB_NL_LANGINFO''@/$(GL_GNULIB_NL_LANGINFO)/g' \
+	      -e 's|@''HAVE_LANGINFO_CODESET''@|$(HAVE_LANGINFO_CODESET)|g' \
+	      -e 's|@''HAVE_LANGINFO_T_FMT_AMPM''@|$(HAVE_LANGINFO_T_FMT_AMPM)|g' \
+	      -e 's|@''HAVE_LANGINFO_ALTMON''@|$(HAVE_LANGINFO_ALTMON)|g' \
+	      -e 's|@''HAVE_LANGINFO_ERA''@|$(HAVE_LANGINFO_ERA)|g' \
+	      -e 's|@''HAVE_LANGINFO_YESEXPR''@|$(HAVE_LANGINFO_YESEXPR)|g' \
+	      -e 's|@''HAVE_NL_LANGINFO''@|$(HAVE_NL_LANGINFO)|g' \
+	      -e 's|@''REPLACE_NL_LANGINFO''@|$(REPLACE_NL_LANGINFO)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/langinfo.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += langinfo.h langinfo.h-t
+
+EXTRA_DIST += langinfo.in.h
+
+## end   gnulib module langinfo
+
+## begin gnulib module libc-config
+
+
+EXTRA_DIST += cdefs.h libc-config.h
+
+## end   gnulib module libc-config
+
+## begin gnulib module limits-h
+
+BUILT_SOURCES += $(LIMITS_H)
+
+# We need the following in order to create <limits.h> when the system
+# doesn't have one that is compatible with GNU.
+if GL_GENERATE_LIMITS_H
+limits.h: limits.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_LIMITS_H''@|$(NEXT_LIMITS_H)|g' \
+	      < $(srcdir)/limits.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+else
+limits.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += limits.h limits.h-t
+
+EXTRA_DIST += limits.in.h
+
+## end   gnulib module limits-h
+
+## begin gnulib module localcharset
+
+libgreputils_a_SOURCES += localcharset.c
+
+EXTRA_DIST += localcharset.h
+
+## end   gnulib module localcharset
+
+## begin gnulib module locale
+
+BUILT_SOURCES += locale.h
+
+# We need the following in order to create <locale.h> when the system
+# doesn't have one that provides all definitions.
+locale.h: locale.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_LOCALE_H''@|$(NEXT_LOCALE_H)|g' \
+	      -e 's/@''GNULIB_LOCALECONV''@/$(GL_GNULIB_LOCALECONV)/g' \
+	      -e 's/@''GNULIB_SETLOCALE''@/$(GL_GNULIB_SETLOCALE)/g' \
+	      -e 's/@''GNULIB_SETLOCALE_NULL''@/$(GL_GNULIB_SETLOCALE_NULL)/g' \
+	      -e 's/@''GNULIB_DUPLOCALE''@/$(GL_GNULIB_DUPLOCALE)/g' \
+	      -e 's/@''GNULIB_LOCALENAME''@/$(GL_GNULIB_LOCALENAME)/g' \
+	      -e 's|@''HAVE_NEWLOCALE''@|$(HAVE_NEWLOCALE)|g' \
+	      -e 's|@''HAVE_DUPLOCALE''@|$(HAVE_DUPLOCALE)|g' \
+	      -e 's|@''HAVE_FREELOCALE''@|$(HAVE_FREELOCALE)|g' \
+	      -e 's|@''HAVE_XLOCALE_H''@|$(HAVE_XLOCALE_H)|g' \
+	      -e 's|@''REPLACE_LOCALECONV''@|$(REPLACE_LOCALECONV)|g' \
+	      -e 's|@''REPLACE_SETLOCALE''@|$(REPLACE_SETLOCALE)|g' \
+	      -e 's|@''REPLACE_NEWLOCALE''@|$(REPLACE_NEWLOCALE)|g' \
+	      -e 's|@''REPLACE_DUPLOCALE''@|$(REPLACE_DUPLOCALE)|g' \
+	      -e 's|@''REPLACE_FREELOCALE''@|$(REPLACE_FREELOCALE)|g' \
+	      -e 's|@''REPLACE_STRUCT_LCONV''@|$(REPLACE_STRUCT_LCONV)|g' \
+	      -e 's|@''LOCALENAME_ENHANCE_LOCALE_FUNCS''@|$(LOCALENAME_ENHANCE_LOCALE_FUNCS)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/locale.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += locale.h locale.h-t
+
+EXTRA_DIST += locale.in.h
+
+## end   gnulib module locale
+
+## begin gnulib module localeconv
+
+
+EXTRA_DIST += localeconv.c
+
+EXTRA_libgreputils_a_SOURCES += localeconv.c
+
+## end   gnulib module localeconv
+
+## begin gnulib module lock
+
+libgreputils_a_SOURCES += glthread/lock.h glthread/lock.c
+
+## end   gnulib module lock
+
+## begin gnulib module lseek
+
+
+EXTRA_DIST += lseek.c
+
+EXTRA_libgreputils_a_SOURCES += lseek.c
+
+## end   gnulib module lseek
+
+## begin gnulib module lstat
+
+
+EXTRA_DIST += lstat.c
+
+EXTRA_libgreputils_a_SOURCES += lstat.c
+
+## end   gnulib module lstat
+
+## begin gnulib module maintainer-makefile
+
+EXTRA_DIST += $(top_srcdir)/maint.mk
+
+## end   gnulib module maintainer-makefile
+
+## begin gnulib module malloc-gnu
+
+
+EXTRA_DIST += malloc.c
+
+EXTRA_libgreputils_a_SOURCES += malloc.c
+
+## end   gnulib module malloc-gnu
+
+## begin gnulib module malloc-posix
+
+
+EXTRA_DIST += malloc.c
+
+EXTRA_libgreputils_a_SOURCES += malloc.c
+
+## end   gnulib module malloc-posix
+
+## begin gnulib module malloca
+
+libgreputils_a_SOURCES += malloca.c
+
+EXTRA_DIST += malloca.h
+
+## end   gnulib module malloca
+
+## begin gnulib module mbchar
+
+libgreputils_a_SOURCES += mbchar.c
+
+EXTRA_DIST += mbchar.h
+
+## end   gnulib module mbchar
+
+## begin gnulib module mbiter
+
+libgreputils_a_SOURCES += mbiter.h mbiter.c
+
+## end   gnulib module mbiter
+
+## begin gnulib module mbrlen
+
+
+EXTRA_DIST += mbrlen.c
+
+EXTRA_libgreputils_a_SOURCES += mbrlen.c
+
+## end   gnulib module mbrlen
+
+## begin gnulib module mbrtowc
+
+
+EXTRA_DIST += lc-charset-dispatch.c lc-charset-dispatch.h mbrtowc-impl-utf8.h mbrtowc-impl.h mbrtowc.c mbtowc-lock.c mbtowc-lock.h windows-initguard.h
+
+EXTRA_libgreputils_a_SOURCES += lc-charset-dispatch.c mbrtowc.c mbtowc-lock.c
+
+## end   gnulib module mbrtowc
+
+## begin gnulib module mbscasecmp
+
+libgreputils_a_SOURCES += mbscasecmp.c
+
+## end   gnulib module mbscasecmp
+
+## begin gnulib module mbsinit
+
+
+EXTRA_DIST += mbsinit.c
+
+EXTRA_libgreputils_a_SOURCES += mbsinit.c
+
+## end   gnulib module mbsinit
+
+## begin gnulib module mbslen
+
+libgreputils_a_SOURCES += mbslen.c
+
+## end   gnulib module mbslen
+
+## begin gnulib module mbsrtowcs
+
+
+EXTRA_DIST += mbsrtowcs-impl.h mbsrtowcs-state.c mbsrtowcs.c
+
+EXTRA_libgreputils_a_SOURCES += mbsrtowcs-state.c mbsrtowcs.c
+
+## end   gnulib module mbsrtowcs
+
+## begin gnulib module mbsstr
+
+libgreputils_a_SOURCES += mbsstr.c
+
+EXTRA_DIST += str-kmp.h
+
+## end   gnulib module mbsstr
+
+## begin gnulib module mbtowc
+
+
+EXTRA_DIST += mbtowc-impl.h mbtowc.c
+
+EXTRA_libgreputils_a_SOURCES += mbtowc.c
+
+## end   gnulib module mbtowc
+
+## begin gnulib module mbuiter
+
+libgreputils_a_SOURCES += mbuiter.h mbuiter.c
+
+## end   gnulib module mbuiter
+
+## begin gnulib module memchr
+
+
+EXTRA_DIST += memchr.c memchr.valgrind
+
+EXTRA_libgreputils_a_SOURCES += memchr.c
+
+## end   gnulib module memchr
+
+## begin gnulib module memchr2
+
+libgreputils_a_SOURCES += memchr2.h memchr2.c
+
+EXTRA_DIST += memchr2.valgrind
+
+## end   gnulib module memchr2
+
+## begin gnulib module mempcpy
+
+
+EXTRA_DIST += mempcpy.c
+
+EXTRA_libgreputils_a_SOURCES += mempcpy.c
+
+## end   gnulib module mempcpy
+
+## begin gnulib module memrchr
+
+
+EXTRA_DIST += memrchr.c
+
+EXTRA_libgreputils_a_SOURCES += memrchr.c
+
+## end   gnulib module memrchr
+
+## begin gnulib module minmax
+
+libgreputils_a_SOURCES += minmax.h
+
+## end   gnulib module minmax
+
+## begin gnulib module msvc-inval
+
+
+EXTRA_DIST += msvc-inval.c msvc-inval.h
+
+EXTRA_libgreputils_a_SOURCES += msvc-inval.c
+
+## end   gnulib module msvc-inval
+
+## begin gnulib module msvc-nothrow
+
+
+EXTRA_DIST += msvc-nothrow.c msvc-nothrow.h
+
+EXTRA_libgreputils_a_SOURCES += msvc-nothrow.c
+
+## end   gnulib module msvc-nothrow
+
+## begin gnulib module nl_langinfo
+
+
+EXTRA_DIST += nl_langinfo-lock.c nl_langinfo.c windows-initguard.h
+
+EXTRA_libgreputils_a_SOURCES += nl_langinfo-lock.c nl_langinfo.c
+
+## end   gnulib module nl_langinfo
+
+## begin gnulib module obstack
+
+
+EXTRA_DIST += obstack.c obstack.h
+
+EXTRA_libgreputils_a_SOURCES += obstack.c
+
+## end   gnulib module obstack
+
+## begin gnulib module open
+
+
+EXTRA_DIST += open.c
+
+EXTRA_libgreputils_a_SOURCES += open.c
+
+## end   gnulib module open
+
+## begin gnulib module openat
+
+
+EXTRA_DIST += openat.c
+
+EXTRA_libgreputils_a_SOURCES += openat.c
+
+## end   gnulib module openat
+
+## begin gnulib module openat-die
+
+libgreputils_a_SOURCES += openat-die.c
+
+## end   gnulib module openat-die
+
+## begin gnulib module openat-h
+
+
+EXTRA_DIST += openat.h
+
+## end   gnulib module openat-h
+
+## begin gnulib module openat-safer
+
+libgreputils_a_SOURCES += openat-safer.c
+
+EXTRA_DIST += fcntl--.h fcntl-safer.h
+
+## end   gnulib module openat-safer
+
+## begin gnulib module opendir
+
+
+EXTRA_DIST += dirent-private.h opendir.c
+
+EXTRA_libgreputils_a_SOURCES += opendir.c
+
+## end   gnulib module opendir
+
+## begin gnulib module opendirat
+
+libgreputils_a_SOURCES += opendirat.c
+
+EXTRA_DIST += opendirat.h
+
+## end   gnulib module opendirat
+
+## begin gnulib module pathmax
+
+
+EXTRA_DIST += pathmax.h
+
+## end   gnulib module pathmax
+
+## begin gnulib module pipe-posix
+
+
+EXTRA_DIST += pipe.c
+
+EXTRA_libgreputils_a_SOURCES += pipe.c
+
+## end   gnulib module pipe-posix
+
+## begin gnulib module propername
+
+libgreputils_a_SOURCES += propername.h propername.c
+
+## end   gnulib module propername
+
+## begin gnulib module quote
+
+
+EXTRA_DIST += quote.h
+
+## end   gnulib module quote
+
+## begin gnulib module quotearg
+
+libgreputils_a_SOURCES += quotearg.c
+
+EXTRA_DIST += quote.h quotearg.h
+
+## end   gnulib module quotearg
+
+## begin gnulib module raise
+
+
+EXTRA_DIST += raise.c
+
+EXTRA_libgreputils_a_SOURCES += raise.c
+
+## end   gnulib module raise
+
+## begin gnulib module rawmemchr
+
+
+EXTRA_DIST += rawmemchr.c rawmemchr.valgrind
+
+EXTRA_libgreputils_a_SOURCES += rawmemchr.c
+
+## end   gnulib module rawmemchr
+
+## begin gnulib module read
+
+
+EXTRA_DIST += read.c
+
+EXTRA_libgreputils_a_SOURCES += read.c
+
+## end   gnulib module read
+
+## begin gnulib module readdir
+
+
+EXTRA_DIST += dirent-private.h readdir.c
+
+EXTRA_libgreputils_a_SOURCES += readdir.c
+
+## end   gnulib module readdir
+
+## begin gnulib module realloc-gnu
+
+
+EXTRA_DIST += realloc.c
+
+EXTRA_libgreputils_a_SOURCES += realloc.c
+
+## end   gnulib module realloc-gnu
+
+## begin gnulib module realloc-posix
+
+
+EXTRA_DIST += realloc.c
+
+EXTRA_libgreputils_a_SOURCES += realloc.c
+
+## end   gnulib module realloc-posix
+
+## begin gnulib module reallocarray
+
+
+EXTRA_DIST += reallocarray.c
+
+EXTRA_libgreputils_a_SOURCES += reallocarray.c
+
+## end   gnulib module reallocarray
+
+## begin gnulib module regex
+
+
+EXTRA_DIST += regcomp.c regex.c regex.h regex_internal.c regex_internal.h regexec.c
+
+EXTRA_libgreputils_a_SOURCES += regcomp.c regex.c regex_internal.c regexec.c
+
+## end   gnulib module regex
+
+## begin gnulib module safe-read
+
+libgreputils_a_SOURCES += safe-read.c
+
+EXTRA_DIST += safe-read.h sys-limits.h
+
+## end   gnulib module safe-read
+
+## begin gnulib module same-inode
+
+
+EXTRA_DIST += same-inode.h
+
+## end   gnulib module same-inode
+
+## begin gnulib module save-cwd
+
+libgreputils_a_SOURCES += save-cwd.c
+
+EXTRA_DIST += save-cwd.h
+
+## end   gnulib module save-cwd
+
+## begin gnulib module setlocale-null
+
+libgreputils_a_SOURCES += setlocale_null.c
+
+EXTRA_DIST += setlocale-lock.c setlocale_null.h windows-initguard.h
+
+EXTRA_libgreputils_a_SOURCES += setlocale-lock.c
+
+## end   gnulib module setlocale-null
+
+## begin gnulib module signal-h
+
+BUILT_SOURCES += signal.h
+
+# We need the following in order to create <signal.h> when the system
+# doesn't have a complete one.
+signal.h: signal.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SIGNAL_H''@|$(NEXT_SIGNAL_H)|g' \
+	      -e 's/@''GNULIB_PTHREAD_SIGMASK''@/$(GL_GNULIB_PTHREAD_SIGMASK)/g' \
+	      -e 's/@''GNULIB_RAISE''@/$(GL_GNULIB_RAISE)/g' \
+	      -e 's/@''GNULIB_SIGNAL_H_SIGPIPE''@/$(GL_GNULIB_SIGNAL_H_SIGPIPE)/g' \
+	      -e 's/@''GNULIB_SIGPROCMASK''@/$(GL_GNULIB_SIGPROCMASK)/g' \
+	      -e 's/@''GNULIB_SIGACTION''@/$(GL_GNULIB_SIGACTION)/g' \
+	      -e 's|@''HAVE_POSIX_SIGNALBLOCKING''@|$(HAVE_POSIX_SIGNALBLOCKING)|g' \
+	      -e 's|@''HAVE_PTHREAD_SIGMASK''@|$(HAVE_PTHREAD_SIGMASK)|g' \
+	      -e 's|@''HAVE_RAISE''@|$(HAVE_RAISE)|g' \
+	      -e 's|@''HAVE_SIGSET_T''@|$(HAVE_SIGSET_T)|g' \
+	      -e 's|@''HAVE_SIGINFO_T''@|$(HAVE_SIGINFO_T)|g' \
+	      -e 's|@''HAVE_SIGACTION''@|$(HAVE_SIGACTION)|g' \
+	      -e 's|@''HAVE_STRUCT_SIGACTION_SA_SIGACTION''@|$(HAVE_STRUCT_SIGACTION_SA_SIGACTION)|g' \
+	      -e 's|@''HAVE_TYPE_VOLATILE_SIG_ATOMIC_T''@|$(HAVE_TYPE_VOLATILE_SIG_ATOMIC_T)|g' \
+	      -e 's|@''HAVE_SIGHANDLER_T''@|$(HAVE_SIGHANDLER_T)|g' \
+	      -e 's|@''REPLACE_PTHREAD_SIGMASK''@|$(REPLACE_PTHREAD_SIGMASK)|g' \
+	      -e 's|@''REPLACE_RAISE''@|$(REPLACE_RAISE)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/signal.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += signal.h signal.h-t
+
+EXTRA_DIST += signal.in.h
+
+## end   gnulib module signal-h
+
+## begin gnulib module sigsegv
+
+BUILT_SOURCES += $(SIGSEGV_H)
+
+if GL_GENERATE_SIGSEGV_H
+sigsegv.h: sigsegv.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/sigsegv.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+else
+sigsegv.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += sigsegv.h sigsegv.h-t
+
+if GL_GENERATE_SIGSEGV_H
+libgreputils_a_SOURCES += sigsegv.c stackvma.c
+endif
+
+EXTRA_DIST += sigsegv.in.h stackvma.h
+
+## end   gnulib module sigsegv
+
+## begin gnulib module snippet/_Noreturn
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+_NORETURN_H=$(srcdir)/_Noreturn.h
+
+EXTRA_DIST += _Noreturn.h
+
+## end   gnulib module snippet/_Noreturn
+
+## begin gnulib module snippet/arg-nonnull
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+ARG_NONNULL_H=$(srcdir)/arg-nonnull.h
+
+EXTRA_DIST += arg-nonnull.h
+
+## end   gnulib module snippet/arg-nonnull
+
+## begin gnulib module snippet/c++defs
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+CXXDEFS_H=$(srcdir)/c++defs.h
+
+EXTRA_DIST += c++defs.h
+
+## end   gnulib module snippet/c++defs
+
+## begin gnulib module snippet/warn-on-use
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+WARN_ON_USE_H=$(srcdir)/warn-on-use.h
+
+EXTRA_DIST += warn-on-use.h
+
+## end   gnulib module snippet/warn-on-use
+
+## begin gnulib module stat
+
+
+EXTRA_DIST += stat-w32.c stat-w32.h stat.c
+
+EXTRA_libgreputils_a_SOURCES += stat-w32.c stat.c
+
+## end   gnulib module stat
+
+## begin gnulib module stat-time
+
+libgreputils_a_SOURCES += stat-time.c
+
+EXTRA_DIST += stat-time.h
+
+## end   gnulib module stat-time
+
+## begin gnulib module stdalign
+
+BUILT_SOURCES += $(STDALIGN_H)
+
+# We need the following in order to create <stdalign.h> when the system
+# doesn't have one that works.
+if GL_GENERATE_STDALIGN_H
+stdalign.h: stdalign.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/stdalign.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+else
+stdalign.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += stdalign.h stdalign.h-t
+
+EXTRA_DIST += stdalign.in.h
+
+## end   gnulib module stdalign
+
+## begin gnulib module stdarg
+
+BUILT_SOURCES += $(STDARG_H)
+
+# We need the following in order to create <stdarg.h> when the system
+# doesn't have one that works with the given compiler.
+if GL_GENERATE_STDARG_H
+stdarg.h: stdarg.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_STDARG_H''@|$(NEXT_STDARG_H)|g' \
+	      < $(srcdir)/stdarg.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+else
+stdarg.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += stdarg.h stdarg.h-t
+
+EXTRA_DIST += stdarg.in.h
+
+## end   gnulib module stdarg
+
+## begin gnulib module stdbool
+
+BUILT_SOURCES += $(STDBOOL_H)
+
+# We need the following in order to create <stdbool.h> when the system
+# doesn't have one that works.
+if GL_GENERATE_STDBOOL_H
+stdbool.h: stdbool.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's/@''HAVE__BOOL''@/$(HAVE__BOOL)/g' < $(srcdir)/stdbool.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+else
+stdbool.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += stdbool.h stdbool.h-t
+
+EXTRA_DIST += stdbool.in.h
+
+## end   gnulib module stdbool
+
+## begin gnulib module stddef
+
+BUILT_SOURCES += $(STDDEF_H)
+
+# We need the following in order to create <stddef.h> when the system
+# doesn't have one that works with the given compiler.
+if GL_GENERATE_STDDEF_H
+stddef.h: stddef.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_STDDEF_H''@|$(NEXT_STDDEF_H)|g' \
+	      -e 's|@''HAVE_MAX_ALIGN_T''@|$(HAVE_MAX_ALIGN_T)|g' \
+	      -e 's|@''HAVE_WCHAR_T''@|$(HAVE_WCHAR_T)|g' \
+	      -e 's|@''REPLACE_NULL''@|$(REPLACE_NULL)|g' \
+	      < $(srcdir)/stddef.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+else
+stddef.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += stddef.h stddef.h-t
+
+EXTRA_DIST += stddef.in.h
+
+## end   gnulib module stddef
+
+## begin gnulib module stdint
+
+BUILT_SOURCES += $(STDINT_H)
+
+# We need the following in order to create <stdint.h> when the system
+# doesn't have one that works with the given compiler.
+if GL_GENERATE_STDINT_H
+stdint.h: stdint.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's/@''HAVE_STDINT_H''@/$(HAVE_STDINT_H)/g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_STDINT_H''@|$(NEXT_STDINT_H)|g' \
+	      -e 's/@''HAVE_C99_STDINT_H''@/$(HAVE_C99_STDINT_H)/g' \
+	      -e 's/@''HAVE_SYS_TYPES_H''@/$(HAVE_SYS_TYPES_H)/g' \
+	      -e 's/@''HAVE_INTTYPES_H''@/$(HAVE_INTTYPES_H)/g' \
+	      -e 's/@''HAVE_SYS_INTTYPES_H''@/$(HAVE_SYS_INTTYPES_H)/g' \
+	      -e 's/@''HAVE_SYS_BITYPES_H''@/$(HAVE_SYS_BITYPES_H)/g' \
+	      -e 's/@''HAVE_WCHAR_H''@/$(HAVE_WCHAR_H)/g' \
+	      -e 's/@''APPLE_UNIVERSAL_BUILD''@/$(APPLE_UNIVERSAL_BUILD)/g' \
+	      -e 's/@''BITSIZEOF_PTRDIFF_T''@/$(BITSIZEOF_PTRDIFF_T)/g' \
+	      -e 's/@''PTRDIFF_T_SUFFIX''@/$(PTRDIFF_T_SUFFIX)/g' \
+	      -e 's/@''BITSIZEOF_SIG_ATOMIC_T''@/$(BITSIZEOF_SIG_ATOMIC_T)/g' \
+	      -e 's/@''HAVE_SIGNED_SIG_ATOMIC_T''@/$(HAVE_SIGNED_SIG_ATOMIC_T)/g' \
+	      -e 's/@''SIG_ATOMIC_T_SUFFIX''@/$(SIG_ATOMIC_T_SUFFIX)/g' \
+	      -e 's/@''BITSIZEOF_SIZE_T''@/$(BITSIZEOF_SIZE_T)/g' \
+	      -e 's/@''SIZE_T_SUFFIX''@/$(SIZE_T_SUFFIX)/g' \
+	      -e 's/@''BITSIZEOF_WCHAR_T''@/$(BITSIZEOF_WCHAR_T)/g' \
+	      -e 's/@''HAVE_SIGNED_WCHAR_T''@/$(HAVE_SIGNED_WCHAR_T)/g' \
+	      -e 's/@''WCHAR_T_SUFFIX''@/$(WCHAR_T_SUFFIX)/g' \
+	      -e 's/@''BITSIZEOF_WINT_T''@/$(BITSIZEOF_WINT_T)/g' \
+	      -e 's/@''HAVE_SIGNED_WINT_T''@/$(HAVE_SIGNED_WINT_T)/g' \
+	      -e 's/@''WINT_T_SUFFIX''@/$(WINT_T_SUFFIX)/g' \
+	      -e 's/@''GNULIBHEADERS_OVERRIDE_WINT_T''@/$(GNULIBHEADERS_OVERRIDE_WINT_T)/g' \
+	      < $(srcdir)/stdint.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+else
+stdint.h: $(top_builddir)/config.status
+	rm -f $@
+endif
+MOSTLYCLEANFILES += stdint.h stdint.h-t
+
+EXTRA_DIST += stdint.in.h
+
+## end   gnulib module stdint
+
+## begin gnulib module stdio
+
+BUILT_SOURCES += stdio.h
+
+# We need the following in order to create <stdio.h> when the system
+# doesn't have one that works with the given compiler.
+stdio.h: stdio.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_STDIO_H''@|$(NEXT_STDIO_H)|g' \
+	      -e 's/@''GNULIB_DPRINTF''@/$(GL_GNULIB_DPRINTF)/g' \
+	      -e 's/@''GNULIB_FCLOSE''@/$(GL_GNULIB_FCLOSE)/g' \
+	      -e 's/@''GNULIB_FDOPEN''@/$(GL_GNULIB_FDOPEN)/g' \
+	      -e 's/@''GNULIB_FFLUSH''@/$(GL_GNULIB_FFLUSH)/g' \
+	      -e 's/@''GNULIB_FGETC''@/$(GL_GNULIB_FGETC)/g' \
+	      -e 's/@''GNULIB_FGETS''@/$(GL_GNULIB_FGETS)/g' \
+	      -e 's/@''GNULIB_FOPEN''@/$(GL_GNULIB_FOPEN)/g' \
+	      -e 's/@''GNULIB_FPRINTF''@/$(GL_GNULIB_FPRINTF)/g' \
+	      -e 's/@''GNULIB_FPRINTF_POSIX''@/$(GL_GNULIB_FPRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_FPURGE''@/$(GL_GNULIB_FPURGE)/g' \
+	      -e 's/@''GNULIB_FPUTC''@/$(GL_GNULIB_FPUTC)/g' \
+	      -e 's/@''GNULIB_FPUTS''@/$(GL_GNULIB_FPUTS)/g' \
+	      -e 's/@''GNULIB_FREAD''@/$(GL_GNULIB_FREAD)/g' \
+	      -e 's/@''GNULIB_FREOPEN''@/$(GL_GNULIB_FREOPEN)/g' \
+	      -e 's/@''GNULIB_FSCANF''@/$(GL_GNULIB_FSCANF)/g' \
+	      -e 's/@''GNULIB_FSEEK''@/$(GL_GNULIB_FSEEK)/g' \
+	      -e 's/@''GNULIB_FSEEKO''@/$(GL_GNULIB_FSEEKO)/g' \
+	      -e 's/@''GNULIB_FTELL''@/$(GL_GNULIB_FTELL)/g' \
+	      -e 's/@''GNULIB_FTELLO''@/$(GL_GNULIB_FTELLO)/g' \
+	      -e 's/@''GNULIB_FWRITE''@/$(GL_GNULIB_FWRITE)/g' \
+	      -e 's/@''GNULIB_GETC''@/$(GL_GNULIB_GETC)/g' \
+	      -e 's/@''GNULIB_GETCHAR''@/$(GL_GNULIB_GETCHAR)/g' \
+	      -e 's/@''GNULIB_GETDELIM''@/$(GL_GNULIB_GETDELIM)/g' \
+	      -e 's/@''GNULIB_GETLINE''@/$(GL_GNULIB_GETLINE)/g' \
+	      -e 's/@''GNULIB_OBSTACK_PRINTF''@/$(GL_GNULIB_OBSTACK_PRINTF)/g' \
+	      -e 's/@''GNULIB_OBSTACK_PRINTF_POSIX''@/$(GL_GNULIB_OBSTACK_PRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_PCLOSE''@/$(GL_GNULIB_PCLOSE)/g' \
+	      -e 's/@''GNULIB_PERROR''@/$(GL_GNULIB_PERROR)/g' \
+	      -e 's/@''GNULIB_POPEN''@/$(GL_GNULIB_POPEN)/g' \
+	      -e 's/@''GNULIB_PRINTF''@/$(GL_GNULIB_PRINTF)/g' \
+	      -e 's/@''GNULIB_PRINTF_POSIX''@/$(GL_GNULIB_PRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_PUTC''@/$(GL_GNULIB_PUTC)/g' \
+	      -e 's/@''GNULIB_PUTCHAR''@/$(GL_GNULIB_PUTCHAR)/g' \
+	      -e 's/@''GNULIB_PUTS''@/$(GL_GNULIB_PUTS)/g' \
+	      -e 's/@''GNULIB_REMOVE''@/$(GL_GNULIB_REMOVE)/g' \
+	      -e 's/@''GNULIB_RENAME''@/$(GL_GNULIB_RENAME)/g' \
+	      -e 's/@''GNULIB_RENAMEAT''@/$(GL_GNULIB_RENAMEAT)/g' \
+	      -e 's/@''GNULIB_SCANF''@/$(GL_GNULIB_SCANF)/g' \
+	      -e 's/@''GNULIB_SNPRINTF''@/$(GL_GNULIB_SNPRINTF)/g' \
+	      -e 's/@''GNULIB_SPRINTF_POSIX''@/$(GL_GNULIB_SPRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_STDIO_H_NONBLOCKING''@/$(GL_GNULIB_STDIO_H_NONBLOCKING)/g' \
+	      -e 's/@''GNULIB_STDIO_H_SIGPIPE''@/$(GL_GNULIB_STDIO_H_SIGPIPE)/g' \
+	      -e 's/@''GNULIB_TMPFILE''@/$(GL_GNULIB_TMPFILE)/g' \
+	      -e 's/@''GNULIB_VASPRINTF''@/$(GL_GNULIB_VASPRINTF)/g' \
+	      -e 's/@''GNULIB_VDPRINTF''@/$(GL_GNULIB_VDPRINTF)/g' \
+	      -e 's/@''GNULIB_VFPRINTF''@/$(GL_GNULIB_VFPRINTF)/g' \
+	      -e 's/@''GNULIB_VFPRINTF_POSIX''@/$(GL_GNULIB_VFPRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_VFSCANF''@/$(GL_GNULIB_VFSCANF)/g' \
+	      -e 's/@''GNULIB_VSCANF''@/$(GL_GNULIB_VSCANF)/g' \
+	      -e 's/@''GNULIB_VPRINTF''@/$(GL_GNULIB_VPRINTF)/g' \
+	      -e 's/@''GNULIB_VPRINTF_POSIX''@/$(GL_GNULIB_VPRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_VSNPRINTF''@/$(GL_GNULIB_VSNPRINTF)/g' \
+	      -e 's/@''GNULIB_VSPRINTF_POSIX''@/$(GL_GNULIB_VSPRINTF_POSIX)/g' \
+	      -e 's/@''GNULIB_MDA_FCLOSEALL''@/$(GL_GNULIB_MDA_FCLOSEALL)/g' \
+	      -e 's/@''GNULIB_MDA_FDOPEN''@/$(GL_GNULIB_MDA_FDOPEN)/g' \
+	      -e 's/@''GNULIB_MDA_FILENO''@/$(GL_GNULIB_MDA_FILENO)/g' \
+	      -e 's/@''GNULIB_MDA_GETW''@/$(GL_GNULIB_MDA_GETW)/g' \
+	      -e 's/@''GNULIB_MDA_PUTW''@/$(GL_GNULIB_MDA_PUTW)/g' \
+	      -e 's/@''GNULIB_MDA_TEMPNAM''@/$(GL_GNULIB_MDA_TEMPNAM)/g' \
+	      < $(srcdir)/stdio.in.h | \
+	  sed -e 's|@''HAVE_DECL_FCLOSEALL''@|$(HAVE_DECL_FCLOSEALL)|g' \
+	      -e 's|@''HAVE_DECL_FPURGE''@|$(HAVE_DECL_FPURGE)|g' \
+	      -e 's|@''HAVE_DECL_FSEEKO''@|$(HAVE_DECL_FSEEKO)|g' \
+	      -e 's|@''HAVE_DECL_FTELLO''@|$(HAVE_DECL_FTELLO)|g' \
+	      -e 's|@''HAVE_DECL_GETDELIM''@|$(HAVE_DECL_GETDELIM)|g' \
+	      -e 's|@''HAVE_DECL_GETLINE''@|$(HAVE_DECL_GETLINE)|g' \
+	      -e 's|@''HAVE_DECL_OBSTACK_PRINTF''@|$(HAVE_DECL_OBSTACK_PRINTF)|g' \
+	      -e 's|@''HAVE_DECL_SNPRINTF''@|$(HAVE_DECL_SNPRINTF)|g' \
+	      -e 's|@''HAVE_DECL_VSNPRINTF''@|$(HAVE_DECL_VSNPRINTF)|g' \
+	      -e 's|@''HAVE_DPRINTF''@|$(HAVE_DPRINTF)|g' \
+	      -e 's|@''HAVE_FSEEKO''@|$(HAVE_FSEEKO)|g' \
+	      -e 's|@''HAVE_FTELLO''@|$(HAVE_FTELLO)|g' \
+	      -e 's|@''HAVE_PCLOSE''@|$(HAVE_PCLOSE)|g' \
+	      -e 's|@''HAVE_POPEN''@|$(HAVE_POPEN)|g' \
+	      -e 's|@''HAVE_RENAMEAT''@|$(HAVE_RENAMEAT)|g' \
+	      -e 's|@''HAVE_VASPRINTF''@|$(HAVE_VASPRINTF)|g' \
+	      -e 's|@''HAVE_VDPRINTF''@|$(HAVE_VDPRINTF)|g' \
+	      -e 's|@''REPLACE_DPRINTF''@|$(REPLACE_DPRINTF)|g' \
+	      -e 's|@''REPLACE_FCLOSE''@|$(REPLACE_FCLOSE)|g' \
+	      -e 's|@''REPLACE_FDOPEN''@|$(REPLACE_FDOPEN)|g' \
+	      -e 's|@''REPLACE_FFLUSH''@|$(REPLACE_FFLUSH)|g' \
+	      -e 's|@''REPLACE_FOPEN''@|$(REPLACE_FOPEN)|g' \
+	      -e 's|@''REPLACE_FPRINTF''@|$(REPLACE_FPRINTF)|g' \
+	      -e 's|@''REPLACE_FPURGE''@|$(REPLACE_FPURGE)|g' \
+	      -e 's|@''REPLACE_FREOPEN''@|$(REPLACE_FREOPEN)|g' \
+	      -e 's|@''REPLACE_FSEEK''@|$(REPLACE_FSEEK)|g' \
+	      -e 's|@''REPLACE_FSEEKO''@|$(REPLACE_FSEEKO)|g' \
+	      -e 's|@''REPLACE_FTELL''@|$(REPLACE_FTELL)|g' \
+	      -e 's|@''REPLACE_FTELLO''@|$(REPLACE_FTELLO)|g' \
+	      -e 's|@''REPLACE_GETDELIM''@|$(REPLACE_GETDELIM)|g' \
+	      -e 's|@''REPLACE_GETLINE''@|$(REPLACE_GETLINE)|g' \
+	      -e 's|@''REPLACE_OBSTACK_PRINTF''@|$(REPLACE_OBSTACK_PRINTF)|g' \
+	      -e 's|@''REPLACE_PERROR''@|$(REPLACE_PERROR)|g' \
+	      -e 's|@''REPLACE_POPEN''@|$(REPLACE_POPEN)|g' \
+	      -e 's|@''REPLACE_PRINTF''@|$(REPLACE_PRINTF)|g' \
+	      -e 's|@''REPLACE_REMOVE''@|$(REPLACE_REMOVE)|g' \
+	      -e 's|@''REPLACE_RENAME''@|$(REPLACE_RENAME)|g' \
+	      -e 's|@''REPLACE_RENAMEAT''@|$(REPLACE_RENAMEAT)|g' \
+	      -e 's|@''REPLACE_SNPRINTF''@|$(REPLACE_SNPRINTF)|g' \
+	      -e 's|@''REPLACE_SPRINTF''@|$(REPLACE_SPRINTF)|g' \
+	      -e 's|@''REPLACE_STDIO_READ_FUNCS''@|$(REPLACE_STDIO_READ_FUNCS)|g' \
+	      -e 's|@''REPLACE_STDIO_WRITE_FUNCS''@|$(REPLACE_STDIO_WRITE_FUNCS)|g' \
+	      -e 's|@''REPLACE_TMPFILE''@|$(REPLACE_TMPFILE)|g' \
+	      -e 's|@''REPLACE_VASPRINTF''@|$(REPLACE_VASPRINTF)|g' \
+	      -e 's|@''REPLACE_VDPRINTF''@|$(REPLACE_VDPRINTF)|g' \
+	      -e 's|@''REPLACE_VFPRINTF''@|$(REPLACE_VFPRINTF)|g' \
+	      -e 's|@''REPLACE_VPRINTF''@|$(REPLACE_VPRINTF)|g' \
+	      -e 's|@''REPLACE_VSNPRINTF''@|$(REPLACE_VSNPRINTF)|g' \
+	      -e 's|@''REPLACE_VSPRINTF''@|$(REPLACE_VSPRINTF)|g' \
+	      -e 's|@''ASM_SYMBOL_PREFIX''@|$(ASM_SYMBOL_PREFIX)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += stdio.h stdio.h-t
+
+EXTRA_DIST += stdio.in.h
+
+## end   gnulib module stdio
+
+## begin gnulib module stdlib
+
+BUILT_SOURCES += stdlib.h
+
+# We need the following in order to create <stdlib.h> when the system
+# doesn't have one that works with the given compiler.
+stdlib.h: stdlib.in.h $(top_builddir)/config.status $(CXXDEFS_H) \
+  $(_NORETURN_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_STDLIB_H''@|$(NEXT_STDLIB_H)|g' \
+	      -e 's/@''GNULIB__EXIT''@/$(GL_GNULIB__EXIT)/g' \
+	      -e 's/@''GNULIB_ALIGNED_ALLOC''@/$(GL_GNULIB_ALIGNED_ALLOC)/g' \
+	      -e 's/@''GNULIB_ATOLL''@/$(GL_GNULIB_ATOLL)/g' \
+	      -e 's/@''GNULIB_CALLOC_POSIX''@/$(GL_GNULIB_CALLOC_POSIX)/g' \
+	      -e 's/@''GNULIB_CANONICALIZE_FILE_NAME''@/$(GL_GNULIB_CANONICALIZE_FILE_NAME)/g' \
+	      -e 's/@''GNULIB_FREE_POSIX''@/$(GL_GNULIB_FREE_POSIX)/g' \
+	      -e 's/@''GNULIB_GETLOADAVG''@/$(GL_GNULIB_GETLOADAVG)/g' \
+	      -e 's/@''GNULIB_GETSUBOPT''@/$(GL_GNULIB_GETSUBOPT)/g' \
+	      -e 's/@''GNULIB_GRANTPT''@/$(GL_GNULIB_GRANTPT)/g' \
+	      -e 's/@''GNULIB_MALLOC_POSIX''@/$(GL_GNULIB_MALLOC_POSIX)/g' \
+	      -e 's/@''GNULIB_MBTOWC''@/$(GL_GNULIB_MBTOWC)/g' \
+	      -e 's/@''GNULIB_MKDTEMP''@/$(GL_GNULIB_MKDTEMP)/g' \
+	      -e 's/@''GNULIB_MKOSTEMP''@/$(GL_GNULIB_MKOSTEMP)/g' \
+	      -e 's/@''GNULIB_MKOSTEMPS''@/$(GL_GNULIB_MKOSTEMPS)/g' \
+	      -e 's/@''GNULIB_MKSTEMP''@/$(GL_GNULIB_MKSTEMP)/g' \
+	      -e 's/@''GNULIB_MKSTEMPS''@/$(GL_GNULIB_MKSTEMPS)/g' \
+	      -e 's/@''GNULIB_POSIX_MEMALIGN''@/$(GL_GNULIB_POSIX_MEMALIGN)/g' \
+	      -e 's/@''GNULIB_POSIX_OPENPT''@/$(GL_GNULIB_POSIX_OPENPT)/g' \
+	      -e 's/@''GNULIB_PTSNAME''@/$(GL_GNULIB_PTSNAME)/g' \
+	      -e 's/@''GNULIB_PTSNAME_R''@/$(GL_GNULIB_PTSNAME_R)/g' \
+	      -e 's/@''GNULIB_PUTENV''@/$(GL_GNULIB_PUTENV)/g' \
+	      -e 's/@''GNULIB_QSORT_R''@/$(GL_GNULIB_QSORT_R)/g' \
+	      -e 's/@''GNULIB_RANDOM''@/$(GL_GNULIB_RANDOM)/g' \
+	      -e 's/@''GNULIB_RANDOM_R''@/$(GL_GNULIB_RANDOM_R)/g' \
+	      -e 's/@''GNULIB_REALLOC_POSIX''@/$(GL_GNULIB_REALLOC_POSIX)/g' \
+	      -e 's/@''GNULIB_REALLOCARRAY''@/$(GL_GNULIB_REALLOCARRAY)/g' \
+	      -e 's/@''GNULIB_REALPATH''@/$(GL_GNULIB_REALPATH)/g' \
+	      -e 's/@''GNULIB_RPMATCH''@/$(GL_GNULIB_RPMATCH)/g' \
+	      -e 's/@''GNULIB_SECURE_GETENV''@/$(GL_GNULIB_SECURE_GETENV)/g' \
+	      -e 's/@''GNULIB_SETENV''@/$(GL_GNULIB_SETENV)/g' \
+	      -e 's/@''GNULIB_STRTOD''@/$(GL_GNULIB_STRTOD)/g' \
+	      -e 's/@''GNULIB_STRTOL''@/$(GL_GNULIB_STRTOL)/g' \
+	      -e 's/@''GNULIB_STRTOLD''@/$(GL_GNULIB_STRTOLD)/g' \
+	      -e 's/@''GNULIB_STRTOLL''@/$(GL_GNULIB_STRTOLL)/g' \
+	      -e 's/@''GNULIB_STRTOUL''@/$(GL_GNULIB_STRTOUL)/g' \
+	      -e 's/@''GNULIB_STRTOULL''@/$(GL_GNULIB_STRTOULL)/g' \
+	      -e 's/@''GNULIB_SYSTEM_POSIX''@/$(GL_GNULIB_SYSTEM_POSIX)/g' \
+	      -e 's/@''GNULIB_UNLOCKPT''@/$(GL_GNULIB_UNLOCKPT)/g' \
+	      -e 's/@''GNULIB_UNSETENV''@/$(GL_GNULIB_UNSETENV)/g' \
+	      -e 's/@''GNULIB_WCTOMB''@/$(GL_GNULIB_WCTOMB)/g' \
+	      -e 's/@''GNULIB_MDA_ECVT''@/$(GL_GNULIB_MDA_ECVT)/g' \
+	      -e 's/@''GNULIB_MDA_FCVT''@/$(GL_GNULIB_MDA_FCVT)/g' \
+	      -e 's/@''GNULIB_MDA_GCVT''@/$(GL_GNULIB_MDA_GCVT)/g' \
+	      -e 's/@''GNULIB_MDA_MKTEMP''@/$(GL_GNULIB_MDA_MKTEMP)/g' \
+	      -e 's/@''GNULIB_MDA_PUTENV''@/$(GL_GNULIB_MDA_PUTENV)/g' \
+	      < $(srcdir)/stdlib.in.h | \
+	  sed -e 's|@''HAVE__EXIT''@|$(HAVE__EXIT)|g' \
+	      -e 's|@''HAVE_ALIGNED_ALLOC''@|$(HAVE_ALIGNED_ALLOC)|g' \
+	      -e 's|@''HAVE_ATOLL''@|$(HAVE_ATOLL)|g' \
+	      -e 's|@''HAVE_CANONICALIZE_FILE_NAME''@|$(HAVE_CANONICALIZE_FILE_NAME)|g' \
+	      -e 's|@''HAVE_DECL_ECVT''@|$(HAVE_DECL_ECVT)|g' \
+	      -e 's|@''HAVE_DECL_FCVT''@|$(HAVE_DECL_FCVT)|g' \
+	      -e 's|@''HAVE_DECL_GCVT''@|$(HAVE_DECL_GCVT)|g' \
+	      -e 's|@''HAVE_DECL_GETLOADAVG''@|$(HAVE_DECL_GETLOADAVG)|g' \
+	      -e 's|@''HAVE_GETSUBOPT''@|$(HAVE_GETSUBOPT)|g' \
+	      -e 's|@''HAVE_GRANTPT''@|$(HAVE_GRANTPT)|g' \
+	      -e 's|@''HAVE_INITSTATE''@|$(HAVE_INITSTATE)|g' \
+	      -e 's|@''HAVE_DECL_INITSTATE''@|$(HAVE_DECL_INITSTATE)|g' \
+	      -e 's|@''HAVE_MBTOWC''@|$(HAVE_MBTOWC)|g' \
+	      -e 's|@''HAVE_MKDTEMP''@|$(HAVE_MKDTEMP)|g' \
+	      -e 's|@''HAVE_MKOSTEMP''@|$(HAVE_MKOSTEMP)|g' \
+	      -e 's|@''HAVE_MKOSTEMPS''@|$(HAVE_MKOSTEMPS)|g' \
+	      -e 's|@''HAVE_MKSTEMP''@|$(HAVE_MKSTEMP)|g' \
+	      -e 's|@''HAVE_MKSTEMPS''@|$(HAVE_MKSTEMPS)|g' \
+	      -e 's|@''HAVE_POSIX_MEMALIGN''@|$(HAVE_POSIX_MEMALIGN)|g' \
+	      -e 's|@''HAVE_POSIX_OPENPT''@|$(HAVE_POSIX_OPENPT)|g' \
+	      -e 's|@''HAVE_PTSNAME''@|$(HAVE_PTSNAME)|g' \
+	      -e 's|@''HAVE_PTSNAME_R''@|$(HAVE_PTSNAME_R)|g' \
+	      -e 's|@''HAVE_QSORT_R''@|$(HAVE_QSORT_R)|g' \
+	      -e 's|@''HAVE_RANDOM''@|$(HAVE_RANDOM)|g' \
+	      -e 's|@''HAVE_RANDOM_H''@|$(HAVE_RANDOM_H)|g' \
+	      -e 's|@''HAVE_RANDOM_R''@|$(HAVE_RANDOM_R)|g' \
+	      -e 's|@''HAVE_REALLOCARRAY''@|$(HAVE_REALLOCARRAY)|g' \
+	      -e 's|@''HAVE_REALPATH''@|$(HAVE_REALPATH)|g' \
+	      -e 's|@''HAVE_RPMATCH''@|$(HAVE_RPMATCH)|g' \
+	      -e 's|@''HAVE_SECURE_GETENV''@|$(HAVE_SECURE_GETENV)|g' \
+	      -e 's|@''HAVE_DECL_SETENV''@|$(HAVE_DECL_SETENV)|g' \
+	      -e 's|@''HAVE_SETSTATE''@|$(HAVE_SETSTATE)|g' \
+	      -e 's|@''HAVE_DECL_SETSTATE''@|$(HAVE_DECL_SETSTATE)|g' \
+	      -e 's|@''HAVE_STRTOD''@|$(HAVE_STRTOD)|g' \
+	      -e 's|@''HAVE_STRTOL''@|$(HAVE_STRTOL)|g' \
+	      -e 's|@''HAVE_STRTOLD''@|$(HAVE_STRTOLD)|g' \
+	      -e 's|@''HAVE_STRTOLL''@|$(HAVE_STRTOLL)|g' \
+	      -e 's|@''HAVE_STRTOUL''@|$(HAVE_STRTOUL)|g' \
+	      -e 's|@''HAVE_STRTOULL''@|$(HAVE_STRTOULL)|g' \
+	      -e 's|@''HAVE_STRUCT_RANDOM_DATA''@|$(HAVE_STRUCT_RANDOM_DATA)|g' \
+	      -e 's|@''HAVE_SYS_LOADAVG_H''@|$(HAVE_SYS_LOADAVG_H)|g' \
+	      -e 's|@''HAVE_UNLOCKPT''@|$(HAVE_UNLOCKPT)|g' \
+	      -e 's|@''HAVE_DECL_UNSETENV''@|$(HAVE_DECL_UNSETENV)|g' \
+	      -e 's|@''REPLACE_ALIGNED_ALLOC''@|$(REPLACE_ALIGNED_ALLOC)|g' \
+	      -e 's|@''REPLACE_CALLOC''@|$(REPLACE_CALLOC)|g' \
+	      -e 's|@''REPLACE_CANONICALIZE_FILE_NAME''@|$(REPLACE_CANONICALIZE_FILE_NAME)|g' \
+	      -e 's|@''REPLACE_FREE''@|$(REPLACE_FREE)|g' \
+	      -e 's|@''REPLACE_INITSTATE''@|$(REPLACE_INITSTATE)|g' \
+	      -e 's|@''REPLACE_MALLOC''@|$(REPLACE_MALLOC)|g' \
+	      -e 's|@''REPLACE_MBTOWC''@|$(REPLACE_MBTOWC)|g' \
+	      -e 's|@''REPLACE_MKSTEMP''@|$(REPLACE_MKSTEMP)|g' \
+	      -e 's|@''REPLACE_POSIX_MEMALIGN''@|$(REPLACE_POSIX_MEMALIGN)|g' \
+	      -e 's|@''REPLACE_PTSNAME''@|$(REPLACE_PTSNAME)|g' \
+	      -e 's|@''REPLACE_PTSNAME_R''@|$(REPLACE_PTSNAME_R)|g' \
+	      -e 's|@''REPLACE_PUTENV''@|$(REPLACE_PUTENV)|g' \
+	      -e 's|@''REPLACE_QSORT_R''@|$(REPLACE_QSORT_R)|g' \
+	      -e 's|@''REPLACE_RANDOM''@|$(REPLACE_RANDOM)|g' \
+	      -e 's|@''REPLACE_RANDOM_R''@|$(REPLACE_RANDOM_R)|g' \
+	      -e 's|@''REPLACE_REALLOC''@|$(REPLACE_REALLOC)|g' \
+	      -e 's|@''REPLACE_REALLOCARRAY''@|$(REPLACE_REALLOCARRAY)|g' \
+	      -e 's|@''REPLACE_REALPATH''@|$(REPLACE_REALPATH)|g' \
+	      -e 's|@''REPLACE_SETENV''@|$(REPLACE_SETENV)|g' \
+	      -e 's|@''REPLACE_SETSTATE''@|$(REPLACE_SETSTATE)|g' \
+	      -e 's|@''REPLACE_STRTOD''@|$(REPLACE_STRTOD)|g' \
+	      -e 's|@''REPLACE_STRTOL''@|$(REPLACE_STRTOL)|g' \
+	      -e 's|@''REPLACE_STRTOLD''@|$(REPLACE_STRTOLD)|g' \
+	      -e 's|@''REPLACE_STRTOLL''@|$(REPLACE_STRTOLL)|g' \
+	      -e 's|@''REPLACE_STRTOUL''@|$(REPLACE_STRTOUL)|g' \
+	      -e 's|@''REPLACE_STRTOULL''@|$(REPLACE_STRTOULL)|g' \
+	      -e 's|@''REPLACE_UNSETENV''@|$(REPLACE_UNSETENV)|g' \
+	      -e 's|@''REPLACE_WCTOMB''@|$(REPLACE_WCTOMB)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _Noreturn/r $(_NORETURN_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += stdlib.h stdlib.h-t
+
+EXTRA_DIST += stdlib.in.h
+
+## end   gnulib module stdlib
+
+## begin gnulib module stpcpy
+
+
+EXTRA_DIST += stpcpy.c
+
+EXTRA_libgreputils_a_SOURCES += stpcpy.c
+
+## end   gnulib module stpcpy
+
+## begin gnulib module strdup-posix
+
+
+EXTRA_DIST += strdup.c
+
+EXTRA_libgreputils_a_SOURCES += strdup.c
+
+## end   gnulib module strdup-posix
+
+## begin gnulib module streq
+
+
+EXTRA_DIST += streq.h
+
+## end   gnulib module streq
+
+## begin gnulib module strerror
+
+
+EXTRA_DIST += strerror.c
+
+EXTRA_libgreputils_a_SOURCES += strerror.c
+
+## end   gnulib module strerror
+
+## begin gnulib module strerror-override
+
+
+EXTRA_DIST += strerror-override.c strerror-override.h
+
+EXTRA_libgreputils_a_SOURCES += strerror-override.c
+
+## end   gnulib module strerror-override
+
+## begin gnulib module striconv
+
+libgreputils_a_SOURCES += striconv.h striconv.c
+if GL_COND_LIBTOOL
+endif
+
+## end   gnulib module striconv
+
+## begin gnulib module string
+
+BUILT_SOURCES += string.h
+
+# We need the following in order to create <string.h> when the system
+# doesn't have one that works with the given compiler.
+string.h: string.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_STRING_H''@|$(NEXT_STRING_H)|g' \
+	      -e 's/@''GNULIB_EXPLICIT_BZERO''@/$(GL_GNULIB_EXPLICIT_BZERO)/g' \
+	      -e 's/@''GNULIB_FFSL''@/$(GL_GNULIB_FFSL)/g' \
+	      -e 's/@''GNULIB_FFSLL''@/$(GL_GNULIB_FFSLL)/g' \
+	      -e 's/@''GNULIB_MBSLEN''@/$(GL_GNULIB_MBSLEN)/g' \
+	      -e 's/@''GNULIB_MBSNLEN''@/$(GL_GNULIB_MBSNLEN)/g' \
+	      -e 's/@''GNULIB_MBSCHR''@/$(GL_GNULIB_MBSCHR)/g' \
+	      -e 's/@''GNULIB_MBSRCHR''@/$(GL_GNULIB_MBSRCHR)/g' \
+	      -e 's/@''GNULIB_MBSSTR''@/$(GL_GNULIB_MBSSTR)/g' \
+	      -e 's/@''GNULIB_MBSCASECMP''@/$(GL_GNULIB_MBSCASECMP)/g' \
+	      -e 's/@''GNULIB_MBSNCASECMP''@/$(GL_GNULIB_MBSNCASECMP)/g' \
+	      -e 's/@''GNULIB_MBSPCASECMP''@/$(GL_GNULIB_MBSPCASECMP)/g' \
+	      -e 's/@''GNULIB_MBSCASESTR''@/$(GL_GNULIB_MBSCASESTR)/g' \
+	      -e 's/@''GNULIB_MBSCSPN''@/$(GL_GNULIB_MBSCSPN)/g' \
+	      -e 's/@''GNULIB_MBSPBRK''@/$(GL_GNULIB_MBSPBRK)/g' \
+	      -e 's/@''GNULIB_MBSSPN''@/$(GL_GNULIB_MBSSPN)/g' \
+	      -e 's/@''GNULIB_MBSSEP''@/$(GL_GNULIB_MBSSEP)/g' \
+	      -e 's/@''GNULIB_MBSTOK_R''@/$(GL_GNULIB_MBSTOK_R)/g' \
+	      -e 's/@''GNULIB_MEMCHR''@/$(GL_GNULIB_MEMCHR)/g' \
+	      -e 's/@''GNULIB_MEMMEM''@/$(GL_GNULIB_MEMMEM)/g' \
+	      -e 's/@''GNULIB_MEMPCPY''@/$(GL_GNULIB_MEMPCPY)/g' \
+	      -e 's/@''GNULIB_MEMRCHR''@/$(GL_GNULIB_MEMRCHR)/g' \
+	      -e 's/@''GNULIB_RAWMEMCHR''@/$(GL_GNULIB_RAWMEMCHR)/g' \
+	      -e 's/@''GNULIB_STPCPY''@/$(GL_GNULIB_STPCPY)/g' \
+	      -e 's/@''GNULIB_STPNCPY''@/$(GL_GNULIB_STPNCPY)/g' \
+	      -e 's/@''GNULIB_STRCHRNUL''@/$(GL_GNULIB_STRCHRNUL)/g' \
+	      -e 's/@''GNULIB_STRDUP''@/$(GL_GNULIB_STRDUP)/g' \
+	      -e 's/@''GNULIB_STRNCAT''@/$(GL_GNULIB_STRNCAT)/g' \
+	      -e 's/@''GNULIB_STRNDUP''@/$(GL_GNULIB_STRNDUP)/g' \
+	      -e 's/@''GNULIB_STRNLEN''@/$(GL_GNULIB_STRNLEN)/g' \
+	      -e 's/@''GNULIB_STRPBRK''@/$(GL_GNULIB_STRPBRK)/g' \
+	      -e 's/@''GNULIB_STRSEP''@/$(GL_GNULIB_STRSEP)/g' \
+	      -e 's/@''GNULIB_STRSTR''@/$(GL_GNULIB_STRSTR)/g' \
+	      -e 's/@''GNULIB_STRCASESTR''@/$(GL_GNULIB_STRCASESTR)/g' \
+	      -e 's/@''GNULIB_STRTOK_R''@/$(GL_GNULIB_STRTOK_R)/g' \
+	      -e 's/@''GNULIB_STRERROR''@/$(GL_GNULIB_STRERROR)/g' \
+	      -e 's/@''GNULIB_STRERROR_R''@/$(GL_GNULIB_STRERROR_R)/g' \
+	      -e 's/@''GNULIB_STRERRORNAME_NP''@/$(GL_GNULIB_STRERRORNAME_NP)/g' \
+	      -e 's/@''GNULIB_SIGABBREV_NP''@/$(GL_GNULIB_SIGABBREV_NP)/g' \
+	      -e 's/@''GNULIB_SIGDESCR_NP''@/$(GL_GNULIB_SIGDESCR_NP)/g' \
+	      -e 's/@''GNULIB_STRSIGNAL''@/$(GL_GNULIB_STRSIGNAL)/g' \
+	      -e 's/@''GNULIB_STRVERSCMP''@/$(GL_GNULIB_STRVERSCMP)/g' \
+	      -e 's/@''GNULIB_MDA_MEMCCPY''@/$(GL_GNULIB_MDA_MEMCCPY)/g' \
+	      -e 's/@''GNULIB_MDA_STRDUP''@/$(GL_GNULIB_MDA_STRDUP)/g' \
+	      < $(srcdir)/string.in.h | \
+	  sed -e 's|@''HAVE_EXPLICIT_BZERO''@|$(HAVE_EXPLICIT_BZERO)|g' \
+	      -e 's|@''HAVE_FFSL''@|$(HAVE_FFSL)|g' \
+	      -e 's|@''HAVE_FFSLL''@|$(HAVE_FFSLL)|g' \
+	      -e 's|@''HAVE_MBSLEN''@|$(HAVE_MBSLEN)|g' \
+	      -e 's|@''HAVE_DECL_MEMMEM''@|$(HAVE_DECL_MEMMEM)|g' \
+	      -e 's|@''HAVE_MEMPCPY''@|$(HAVE_MEMPCPY)|g' \
+	      -e 's|@''HAVE_DECL_MEMRCHR''@|$(HAVE_DECL_MEMRCHR)|g' \
+	      -e 's|@''HAVE_RAWMEMCHR''@|$(HAVE_RAWMEMCHR)|g' \
+	      -e 's|@''HAVE_STPCPY''@|$(HAVE_STPCPY)|g' \
+	      -e 's|@''HAVE_STPNCPY''@|$(HAVE_STPNCPY)|g' \
+	      -e 's|@''HAVE_STRCHRNUL''@|$(HAVE_STRCHRNUL)|g' \
+	      -e 's|@''HAVE_DECL_STRDUP''@|$(HAVE_DECL_STRDUP)|g' \
+	      -e 's|@''HAVE_DECL_STRNDUP''@|$(HAVE_DECL_STRNDUP)|g' \
+	      -e 's|@''HAVE_DECL_STRNLEN''@|$(HAVE_DECL_STRNLEN)|g' \
+	      -e 's|@''HAVE_STRPBRK''@|$(HAVE_STRPBRK)|g' \
+	      -e 's|@''HAVE_STRSEP''@|$(HAVE_STRSEP)|g' \
+	      -e 's|@''HAVE_STRCASESTR''@|$(HAVE_STRCASESTR)|g' \
+	      -e 's|@''HAVE_DECL_STRTOK_R''@|$(HAVE_DECL_STRTOK_R)|g' \
+	      -e 's|@''HAVE_DECL_STRERROR_R''@|$(HAVE_DECL_STRERROR_R)|g' \
+	      -e 's|@''HAVE_STRERRORNAME_NP''@|$(HAVE_STRERRORNAME_NP)|g' \
+	      -e 's|@''HAVE_SIGABBREV_NP''@|$(HAVE_SIGABBREV_NP)|g' \
+	      -e 's|@''HAVE_SIGDESCR_NP''@|$(HAVE_SIGDESCR_NP)|g' \
+	      -e 's|@''HAVE_DECL_STRSIGNAL''@|$(HAVE_DECL_STRSIGNAL)|g' \
+	      -e 's|@''HAVE_STRVERSCMP''@|$(HAVE_STRVERSCMP)|g' \
+	      -e 's|@''REPLACE_FFSLL''@|$(REPLACE_FFSLL)|g' \
+	      -e 's|@''REPLACE_MEMCHR''@|$(REPLACE_MEMCHR)|g' \
+	      -e 's|@''REPLACE_MEMMEM''@|$(REPLACE_MEMMEM)|g' \
+	      -e 's|@''REPLACE_STPNCPY''@|$(REPLACE_STPNCPY)|g' \
+	      -e 's|@''REPLACE_STRCHRNUL''@|$(REPLACE_STRCHRNUL)|g' \
+	      -e 's|@''REPLACE_STRDUP''@|$(REPLACE_STRDUP)|g' \
+	      -e 's|@''REPLACE_STRNCAT''@|$(REPLACE_STRNCAT)|g' \
+	      -e 's|@''REPLACE_STRNDUP''@|$(REPLACE_STRNDUP)|g' \
+	      -e 's|@''REPLACE_STRNLEN''@|$(REPLACE_STRNLEN)|g' \
+	      -e 's|@''REPLACE_STRSTR''@|$(REPLACE_STRSTR)|g' \
+	      -e 's|@''REPLACE_STRCASESTR''@|$(REPLACE_STRCASESTR)|g' \
+	      -e 's|@''REPLACE_STRTOK_R''@|$(REPLACE_STRTOK_R)|g' \
+	      -e 's|@''REPLACE_STRERROR''@|$(REPLACE_STRERROR)|g' \
+	      -e 's|@''REPLACE_STRERROR_R''@|$(REPLACE_STRERROR_R)|g' \
+	      -e 's|@''REPLACE_STRERRORNAME_NP''@|$(REPLACE_STRERRORNAME_NP)|g' \
+	      -e 's|@''REPLACE_STRSIGNAL''@|$(REPLACE_STRSIGNAL)|g' \
+	      -e 's|@''UNDEFINE_STRTOK_R''@|$(UNDEFINE_STRTOK_R)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
+	      < $(srcdir)/string.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += string.h string.h-t
+
+EXTRA_DIST += string.in.h
+
+## end   gnulib module string
+
+## begin gnulib module strnlen
+
+
+EXTRA_DIST += strnlen.c
+
+EXTRA_libgreputils_a_SOURCES += strnlen.c
+
+## end   gnulib module strnlen
+
+## begin gnulib module strnlen1
+
+libgreputils_a_SOURCES += strnlen1.h strnlen1.c
+
+## end   gnulib module strnlen1
+
+## begin gnulib module strstr
+
+
+EXTRA_DIST += strstr.c
+
+EXTRA_libgreputils_a_SOURCES += strstr.c
+
+## end   gnulib module strstr
+
+## begin gnulib module strstr-simple
+
+
+EXTRA_DIST += str-two-way.h strstr.c
+
+EXTRA_libgreputils_a_SOURCES += strstr.c
+
+## end   gnulib module strstr-simple
+
+## begin gnulib module strtoimax
+
+
+EXTRA_DIST += strtoimax.c
+
+EXTRA_libgreputils_a_SOURCES += strtoimax.c
+
+## end   gnulib module strtoimax
+
+## begin gnulib module strtoll
+
+
+EXTRA_DIST += strtol.c strtoll.c
+
+EXTRA_libgreputils_a_SOURCES += strtol.c strtoll.c
+
+## end   gnulib module strtoll
+
+## begin gnulib module strtoull
+
+
+EXTRA_DIST += strtol.c strtoul.c strtoull.c
+
+EXTRA_libgreputils_a_SOURCES += strtol.c strtoul.c strtoull.c
+
+## end   gnulib module strtoull
+
+## begin gnulib module strtoumax
+
+
+EXTRA_DIST += strtoimax.c strtoumax.c
+
+EXTRA_libgreputils_a_SOURCES += strtoimax.c strtoumax.c
+
+## end   gnulib module strtoumax
+
+## begin gnulib module sys_stat
+
+BUILT_SOURCES += sys/stat.h
+
+# We need the following in order to create <sys/stat.h> when the system
+# has one that is incomplete.
+sys/stat.h: sys_stat.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_STAT_H''@|$(NEXT_SYS_STAT_H)|g' \
+	      -e 's|@''WINDOWS_64_BIT_ST_SIZE''@|$(WINDOWS_64_BIT_ST_SIZE)|g' \
+	      -e 's|@''WINDOWS_STAT_TIMESPEC''@|$(WINDOWS_STAT_TIMESPEC)|g' \
+	      -e 's/@''GNULIB_FCHMODAT''@/$(GL_GNULIB_FCHMODAT)/g' \
+	      -e 's/@''GNULIB_FSTAT''@/$(GL_GNULIB_FSTAT)/g' \
+	      -e 's/@''GNULIB_FSTATAT''@/$(GL_GNULIB_FSTATAT)/g' \
+	      -e 's/@''GNULIB_FUTIMENS''@/$(GL_GNULIB_FUTIMENS)/g' \
+	      -e 's/@''GNULIB_GETUMASK''@/$(GL_GNULIB_GETUMASK)/g' \
+	      -e 's/@''GNULIB_LCHMOD''@/$(GL_GNULIB_LCHMOD)/g' \
+	      -e 's/@''GNULIB_LSTAT''@/$(GL_GNULIB_LSTAT)/g' \
+	      -e 's/@''GNULIB_MKDIR''@/$(GL_GNULIB_MKDIR)/g' \
+	      -e 's/@''GNULIB_MKDIRAT''@/$(GL_GNULIB_MKDIRAT)/g' \
+	      -e 's/@''GNULIB_MKFIFO''@/$(GL_GNULIB_MKFIFO)/g' \
+	      -e 's/@''GNULIB_MKFIFOAT''@/$(GL_GNULIB_MKFIFOAT)/g' \
+	      -e 's/@''GNULIB_MKNOD''@/$(GL_GNULIB_MKNOD)/g' \
+	      -e 's/@''GNULIB_MKNODAT''@/$(GL_GNULIB_MKNODAT)/g' \
+	      -e 's/@''GNULIB_STAT''@/$(GL_GNULIB_STAT)/g' \
+	      -e 's/@''GNULIB_UTIMENSAT''@/$(GL_GNULIB_UTIMENSAT)/g' \
+	      -e 's/@''GNULIB_OVERRIDES_STRUCT_STAT''@/$(GL_GNULIB_OVERRIDES_STRUCT_STAT)/g' \
+	      -e 's/@''GNULIB_MDA_CHMOD''@/$(GL_GNULIB_MDA_CHMOD)/g' \
+	      -e 's/@''GNULIB_MDA_MKDIR''@/$(GL_GNULIB_MDA_MKDIR)/g' \
+	      -e 's/@''GNULIB_MDA_UMASK''@/$(GL_GNULIB_MDA_UMASK)/g' \
+	      -e 's|@''HAVE_FCHMODAT''@|$(HAVE_FCHMODAT)|g' \
+	      -e 's|@''HAVE_FSTATAT''@|$(HAVE_FSTATAT)|g' \
+	      -e 's|@''HAVE_FUTIMENS''@|$(HAVE_FUTIMENS)|g' \
+	      -e 's|@''HAVE_GETUMASK''@|$(HAVE_GETUMASK)|g' \
+	      -e 's|@''HAVE_LCHMOD''@|$(HAVE_LCHMOD)|g' \
+	      -e 's|@''HAVE_LSTAT''@|$(HAVE_LSTAT)|g' \
+	      -e 's|@''HAVE_MKDIRAT''@|$(HAVE_MKDIRAT)|g' \
+	      -e 's|@''HAVE_MKFIFO''@|$(HAVE_MKFIFO)|g' \
+	      -e 's|@''HAVE_MKFIFOAT''@|$(HAVE_MKFIFOAT)|g' \
+	      -e 's|@''HAVE_MKNOD''@|$(HAVE_MKNOD)|g' \
+	      -e 's|@''HAVE_MKNODAT''@|$(HAVE_MKNODAT)|g' \
+	      -e 's|@''HAVE_UTIMENSAT''@|$(HAVE_UTIMENSAT)|g' \
+	      -e 's|@''REPLACE_FCHMODAT''@|$(REPLACE_FCHMODAT)|g' \
+	      -e 's|@''REPLACE_FSTAT''@|$(REPLACE_FSTAT)|g' \
+	      -e 's|@''REPLACE_FSTATAT''@|$(REPLACE_FSTATAT)|g' \
+	      -e 's|@''REPLACE_FUTIMENS''@|$(REPLACE_FUTIMENS)|g' \
+	      -e 's|@''REPLACE_LSTAT''@|$(REPLACE_LSTAT)|g' \
+	      -e 's|@''REPLACE_MKDIR''@|$(REPLACE_MKDIR)|g' \
+	      -e 's|@''REPLACE_MKFIFO''@|$(REPLACE_MKFIFO)|g' \
+	      -e 's|@''REPLACE_MKFIFOAT''@|$(REPLACE_MKFIFOAT)|g' \
+	      -e 's|@''REPLACE_MKNOD''@|$(REPLACE_MKNOD)|g' \
+	      -e 's|@''REPLACE_MKNODAT''@|$(REPLACE_MKNODAT)|g' \
+	      -e 's|@''REPLACE_STAT''@|$(REPLACE_STAT)|g' \
+	      -e 's|@''REPLACE_UTIMENSAT''@|$(REPLACE_UTIMENSAT)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/sys_stat.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += sys/stat.h sys/stat.h-t
+MOSTLYCLEANDIRS += sys
+
+EXTRA_DIST += sys_stat.in.h
+
+## end   gnulib module sys_stat
+
+## begin gnulib module sys_types
+
+BUILT_SOURCES += sys/types.h
+
+# We need the following in order to create <sys/types.h> when the system
+# doesn't have one that works with the given compiler.
+sys/types.h: sys_types.in.h $(top_builddir)/config.status
+	$(AM_V_at)$(MKDIR_P) sys
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_SYS_TYPES_H''@|$(NEXT_SYS_TYPES_H)|g' \
+	      -e 's|@''WINDOWS_64_BIT_OFF_T''@|$(WINDOWS_64_BIT_OFF_T)|g' \
+	      -e 's|@''WINDOWS_STAT_INODES''@|$(WINDOWS_STAT_INODES)|g' \
+	      < $(srcdir)/sys_types.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += sys/types.h sys/types.h-t
+
+EXTRA_DIST += sys_types.in.h
+
+## end   gnulib module sys_types
+
+## begin gnulib module threadlib
+
+libgreputils_a_SOURCES += glthread/threadlib.c
+
+## end   gnulib module threadlib
+
+## begin gnulib module time
+
+BUILT_SOURCES += time.h
+
+# We need the following in order to create <time.h> when the system
+# doesn't have one that works with the given compiler.
+time.h: time.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_TIME_H''@|$(NEXT_TIME_H)|g' \
+	      -e 's/@''GNULIB_CTIME''@/$(GL_GNULIB_CTIME)/g' \
+	      -e 's/@''GNULIB_LOCALTIME''@/$(GL_GNULIB_LOCALTIME)/g' \
+	      -e 's/@''GNULIB_MKTIME''@/$(GL_GNULIB_MKTIME)/g' \
+	      -e 's/@''GNULIB_NANOSLEEP''@/$(GL_GNULIB_NANOSLEEP)/g' \
+	      -e 's/@''GNULIB_STRFTIME''@/$(GL_GNULIB_STRFTIME)/g' \
+	      -e 's/@''GNULIB_STRPTIME''@/$(GL_GNULIB_STRPTIME)/g' \
+	      -e 's/@''GNULIB_TIMEGM''@/$(GL_GNULIB_TIMEGM)/g' \
+	      -e 's/@''GNULIB_TIMESPEC_GET''@/$(GL_GNULIB_TIMESPEC_GET)/g' \
+	      -e 's/@''GNULIB_TIME_R''@/$(GL_GNULIB_TIME_R)/g' \
+	      -e 's/@''GNULIB_TIME_RZ''@/$(GL_GNULIB_TIME_RZ)/g' \
+	      -e 's/@''GNULIB_TZSET''@/$(GL_GNULIB_TZSET)/g' \
+	      -e 's/@''GNULIB_MDA_TZSET''@/$(GL_GNULIB_MDA_TZSET)/g' \
+	      -e 's|@''HAVE_DECL_LOCALTIME_R''@|$(HAVE_DECL_LOCALTIME_R)|g' \
+	      -e 's|@''HAVE_NANOSLEEP''@|$(HAVE_NANOSLEEP)|g' \
+	      -e 's|@''HAVE_STRPTIME''@|$(HAVE_STRPTIME)|g' \
+	      -e 's|@''HAVE_TIMEGM''@|$(HAVE_TIMEGM)|g' \
+	      -e 's|@''HAVE_TIMESPEC_GET''@|$(HAVE_TIMESPEC_GET)|g' \
+	      -e 's|@''HAVE_TIMEZONE_T''@|$(HAVE_TIMEZONE_T)|g' \
+	      -e 's|@''REPLACE_CTIME''@|$(REPLACE_CTIME)|g' \
+	      -e 's|@''REPLACE_GMTIME''@|$(REPLACE_GMTIME)|g' \
+	      -e 's|@''REPLACE_LOCALTIME''@|$(REPLACE_LOCALTIME)|g' \
+	      -e 's|@''REPLACE_LOCALTIME_R''@|$(REPLACE_LOCALTIME_R)|g' \
+	      -e 's|@''REPLACE_MKTIME''@|$(REPLACE_MKTIME)|g' \
+	      -e 's|@''REPLACE_NANOSLEEP''@|$(REPLACE_NANOSLEEP)|g' \
+	      -e 's|@''REPLACE_STRFTIME''@|$(REPLACE_STRFTIME)|g' \
+	      -e 's|@''REPLACE_TIMEGM''@|$(REPLACE_TIMEGM)|g' \
+	      -e 's|@''REPLACE_TZSET''@|$(REPLACE_TZSET)|g' \
+	      -e 's|@''PTHREAD_H_DEFINES_STRUCT_TIMESPEC''@|$(PTHREAD_H_DEFINES_STRUCT_TIMESPEC)|g' \
+	      -e 's|@''SYS_TIME_H_DEFINES_STRUCT_TIMESPEC''@|$(SYS_TIME_H_DEFINES_STRUCT_TIMESPEC)|g' \
+	      -e 's|@''TIME_H_DEFINES_STRUCT_TIMESPEC''@|$(TIME_H_DEFINES_STRUCT_TIMESPEC)|g' \
+	      -e 's|@''UNISTD_H_DEFINES_STRUCT_TIMESPEC''@|$(UNISTD_H_DEFINES_STRUCT_TIMESPEC)|g' \
+	      -e 's|@''TIME_H_DEFINES_TIME_UTC''@|$(TIME_H_DEFINES_TIME_UTC)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/time.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += time.h time.h-t
+
+EXTRA_DIST += time.in.h
+
+## end   gnulib module time
+
+## begin gnulib module trim
+
+libgreputils_a_SOURCES += trim.c
+
+EXTRA_DIST += trim.h
+
+## end   gnulib module trim
+
+## begin gnulib module unistd
+
+BUILT_SOURCES += unistd.h
+libgreputils_a_SOURCES += unistd.c
+
+# We need the following in order to create an empty placeholder for
+# <unistd.h> when the system doesn't have one.
+unistd.h: unistd.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''HAVE_UNISTD_H''@|$(HAVE_UNISTD_H)|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_UNISTD_H''@|$(NEXT_UNISTD_H)|g' \
+	      -e 's|@''WINDOWS_64_BIT_OFF_T''@|$(WINDOWS_64_BIT_OFF_T)|g' \
+	      -e 's/@''GNULIB_ACCESS''@/$(GL_GNULIB_ACCESS)/g' \
+	      -e 's/@''GNULIB_CHDIR''@/$(GL_GNULIB_CHDIR)/g' \
+	      -e 's/@''GNULIB_CHOWN''@/$(GL_GNULIB_CHOWN)/g' \
+	      -e 's/@''GNULIB_CLOSE''@/$(GL_GNULIB_CLOSE)/g' \
+	      -e 's/@''GNULIB_COPY_FILE_RANGE''@/$(GL_GNULIB_COPY_FILE_RANGE)/g' \
+	      -e 's/@''GNULIB_DUP''@/$(GL_GNULIB_DUP)/g' \
+	      -e 's/@''GNULIB_DUP2''@/$(GL_GNULIB_DUP2)/g' \
+	      -e 's/@''GNULIB_DUP3''@/$(GL_GNULIB_DUP3)/g' \
+	      -e 's/@''GNULIB_ENVIRON''@/$(GL_GNULIB_ENVIRON)/g' \
+	      -e 's/@''GNULIB_EUIDACCESS''@/$(GL_GNULIB_EUIDACCESS)/g' \
+	      -e 's/@''GNULIB_EXECL''@/$(GL_GNULIB_EXECL)/g' \
+	      -e 's/@''GNULIB_EXECLE''@/$(GL_GNULIB_EXECLE)/g' \
+	      -e 's/@''GNULIB_EXECLP''@/$(GL_GNULIB_EXECLP)/g' \
+	      -e 's/@''GNULIB_EXECV''@/$(GL_GNULIB_EXECV)/g' \
+	      -e 's/@''GNULIB_EXECVE''@/$(GL_GNULIB_EXECVE)/g' \
+	      -e 's/@''GNULIB_EXECVP''@/$(GL_GNULIB_EXECVP)/g' \
+	      -e 's/@''GNULIB_EXECVPE''@/$(GL_GNULIB_EXECVPE)/g' \
+	      -e 's/@''GNULIB_FACCESSAT''@/$(GL_GNULIB_FACCESSAT)/g' \
+	      -e 's/@''GNULIB_FCHDIR''@/$(GL_GNULIB_FCHDIR)/g' \
+	      -e 's/@''GNULIB_FCHOWNAT''@/$(GL_GNULIB_FCHOWNAT)/g' \
+	      -e 's/@''GNULIB_FDATASYNC''@/$(GL_GNULIB_FDATASYNC)/g' \
+	      -e 's/@''GNULIB_FSYNC''@/$(GL_GNULIB_FSYNC)/g' \
+	      -e 's/@''GNULIB_FTRUNCATE''@/$(GL_GNULIB_FTRUNCATE)/g' \
+	      -e 's/@''GNULIB_GETCWD''@/$(GL_GNULIB_GETCWD)/g' \
+	      -e 's/@''GNULIB_GETDOMAINNAME''@/$(GL_GNULIB_GETDOMAINNAME)/g' \
+	      -e 's/@''GNULIB_GETDTABLESIZE''@/$(GL_GNULIB_GETDTABLESIZE)/g' \
+	      -e 's/@''GNULIB_GETENTROPY''@/$(GL_GNULIB_GETENTROPY)/g' \
+	      -e 's/@''GNULIB_GETGROUPS''@/$(GL_GNULIB_GETGROUPS)/g' \
+	      -e 's/@''GNULIB_GETHOSTNAME''@/$(GL_GNULIB_GETHOSTNAME)/g' \
+	      -e 's/@''GNULIB_GETLOGIN''@/$(GL_GNULIB_GETLOGIN)/g' \
+	      -e 's/@''GNULIB_GETLOGIN_R''@/$(GL_GNULIB_GETLOGIN_R)/g' \
+	      -e 's/@''GNULIB_GETOPT_POSIX''@/$(GL_GNULIB_GETOPT_POSIX)/g' \
+	      -e 's/@''GNULIB_GETPAGESIZE''@/$(GL_GNULIB_GETPAGESIZE)/g' \
+	      -e 's/@''GNULIB_GETPASS''@/$(GL_GNULIB_GETPASS)/g' \
+	      -e 's/@''GNULIB_GETUSERSHELL''@/$(GL_GNULIB_GETUSERSHELL)/g' \
+	      -e 's/@''GNULIB_GROUP_MEMBER''@/$(GL_GNULIB_GROUP_MEMBER)/g' \
+	      -e 's/@''GNULIB_ISATTY''@/$(GL_GNULIB_ISATTY)/g' \
+	      -e 's/@''GNULIB_LCHOWN''@/$(GL_GNULIB_LCHOWN)/g' \
+	      -e 's/@''GNULIB_LINK''@/$(GL_GNULIB_LINK)/g' \
+	      -e 's/@''GNULIB_LINKAT''@/$(GL_GNULIB_LINKAT)/g' \
+	      -e 's/@''GNULIB_LSEEK''@/$(GL_GNULIB_LSEEK)/g' \
+	      -e 's/@''GNULIB_PIPE''@/$(GL_GNULIB_PIPE)/g' \
+	      -e 's/@''GNULIB_PIPE2''@/$(GL_GNULIB_PIPE2)/g' \
+	      -e 's/@''GNULIB_PREAD''@/$(GL_GNULIB_PREAD)/g' \
+	      -e 's/@''GNULIB_PWRITE''@/$(GL_GNULIB_PWRITE)/g' \
+	      -e 's/@''GNULIB_READ''@/$(GL_GNULIB_READ)/g' \
+	      -e 's/@''GNULIB_READLINK''@/$(GL_GNULIB_READLINK)/g' \
+	      -e 's/@''GNULIB_READLINKAT''@/$(GL_GNULIB_READLINKAT)/g' \
+	      -e 's/@''GNULIB_RMDIR''@/$(GL_GNULIB_RMDIR)/g' \
+	      -e 's/@''GNULIB_SETHOSTNAME''@/$(GL_GNULIB_SETHOSTNAME)/g' \
+	      -e 's/@''GNULIB_SLEEP''@/$(GL_GNULIB_SLEEP)/g' \
+	      -e 's/@''GNULIB_SYMLINK''@/$(GL_GNULIB_SYMLINK)/g' \
+	      -e 's/@''GNULIB_SYMLINKAT''@/$(GL_GNULIB_SYMLINKAT)/g' \
+	      -e 's/@''GNULIB_TRUNCATE''@/$(GL_GNULIB_TRUNCATE)/g' \
+	      -e 's/@''GNULIB_TTYNAME_R''@/$(GL_GNULIB_TTYNAME_R)/g' \
+	      -e 's/@''GNULIB_UNISTD_H_GETOPT''@/0$(GL_GNULIB_UNISTD_H_GETOPT)/g' \
+	      -e 's/@''GNULIB_UNISTD_H_NONBLOCKING''@/$(GL_GNULIB_UNISTD_H_NONBLOCKING)/g' \
+	      -e 's/@''GNULIB_UNISTD_H_SIGPIPE''@/$(GL_GNULIB_UNISTD_H_SIGPIPE)/g' \
+	      -e 's/@''GNULIB_UNLINK''@/$(GL_GNULIB_UNLINK)/g' \
+	      -e 's/@''GNULIB_UNLINKAT''@/$(GL_GNULIB_UNLINKAT)/g' \
+	      -e 's/@''GNULIB_USLEEP''@/$(GL_GNULIB_USLEEP)/g' \
+	      -e 's/@''GNULIB_WRITE''@/$(GL_GNULIB_WRITE)/g' \
+	      -e 's/@''GNULIB_MDA_ACCESS''@/$(GL_GNULIB_MDA_ACCESS)/g' \
+	      -e 's/@''GNULIB_MDA_CHDIR''@/$(GL_GNULIB_MDA_CHDIR)/g' \
+	      -e 's/@''GNULIB_MDA_CLOSE''@/$(GL_GNULIB_MDA_CLOSE)/g' \
+	      -e 's/@''GNULIB_MDA_DUP''@/$(GL_GNULIB_MDA_DUP)/g' \
+	      -e 's/@''GNULIB_MDA_DUP2''@/$(GL_GNULIB_MDA_DUP2)/g' \
+	      -e 's/@''GNULIB_MDA_EXECL''@/$(GL_GNULIB_MDA_EXECL)/g' \
+	      -e 's/@''GNULIB_MDA_EXECLE''@/$(GL_GNULIB_MDA_EXECLE)/g' \
+	      -e 's/@''GNULIB_MDA_EXECLP''@/$(GL_GNULIB_MDA_EXECLP)/g' \
+	      -e 's/@''GNULIB_MDA_EXECV''@/$(GL_GNULIB_MDA_EXECV)/g' \
+	      -e 's/@''GNULIB_MDA_EXECVE''@/$(GL_GNULIB_MDA_EXECVE)/g' \
+	      -e 's/@''GNULIB_MDA_EXECVP''@/$(GL_GNULIB_MDA_EXECVP)/g' \
+	      -e 's/@''GNULIB_MDA_EXECVPE''@/$(GL_GNULIB_MDA_EXECVPE)/g' \
+	      -e 's/@''GNULIB_MDA_GETCWD''@/$(GL_GNULIB_MDA_GETCWD)/g' \
+	      -e 's/@''GNULIB_MDA_GETPID''@/$(GL_GNULIB_MDA_GETPID)/g' \
+	      -e 's/@''GNULIB_MDA_ISATTY''@/$(GL_GNULIB_MDA_ISATTY)/g' \
+	      -e 's/@''GNULIB_MDA_LSEEK''@/$(GL_GNULIB_MDA_LSEEK)/g' \
+	      -e 's/@''GNULIB_MDA_READ''@/$(GL_GNULIB_MDA_READ)/g' \
+	      -e 's/@''GNULIB_MDA_RMDIR''@/$(GL_GNULIB_MDA_RMDIR)/g' \
+	      -e 's/@''GNULIB_MDA_SWAB''@/$(GL_GNULIB_MDA_SWAB)/g' \
+	      -e 's/@''GNULIB_MDA_UNLINK''@/$(GL_GNULIB_MDA_UNLINK)/g' \
+	      -e 's/@''GNULIB_MDA_WRITE''@/$(GL_GNULIB_MDA_WRITE)/g' \
+	      < $(srcdir)/unistd.in.h | \
+	  sed -e 's|@''HAVE_CHOWN''@|$(HAVE_CHOWN)|g' \
+	      -e 's|@''HAVE_COPY_FILE_RANGE''@|$(HAVE_COPY_FILE_RANGE)|g' \
+	      -e 's|@''HAVE_DUP3''@|$(HAVE_DUP3)|g' \
+	      -e 's|@''HAVE_EUIDACCESS''@|$(HAVE_EUIDACCESS)|g' \
+	      -e 's|@''HAVE_EXECVPE''@|$(HAVE_EXECVPE)|g' \
+	      -e 's|@''HAVE_FACCESSAT''@|$(HAVE_FACCESSAT)|g' \
+	      -e 's|@''HAVE_FCHDIR''@|$(HAVE_FCHDIR)|g' \
+	      -e 's|@''HAVE_FCHOWNAT''@|$(HAVE_FCHOWNAT)|g' \
+	      -e 's|@''HAVE_FDATASYNC''@|$(HAVE_FDATASYNC)|g' \
+	      -e 's|@''HAVE_FSYNC''@|$(HAVE_FSYNC)|g' \
+	      -e 's|@''HAVE_FTRUNCATE''@|$(HAVE_FTRUNCATE)|g' \
+	      -e 's|@''HAVE_GETDTABLESIZE''@|$(HAVE_GETDTABLESIZE)|g' \
+	      -e 's|@''HAVE_GETENTROPY''@|$(HAVE_GETENTROPY)|g' \
+	      -e 's|@''HAVE_GETGROUPS''@|$(HAVE_GETGROUPS)|g' \
+	      -e 's|@''HAVE_GETHOSTNAME''@|$(HAVE_GETHOSTNAME)|g' \
+	      -e 's|@''HAVE_GETPAGESIZE''@|$(HAVE_GETPAGESIZE)|g' \
+	      -e 's|@''HAVE_GETPASS''@|$(HAVE_GETPASS)|g' \
+	      -e 's|@''HAVE_GROUP_MEMBER''@|$(HAVE_GROUP_MEMBER)|g' \
+	      -e 's|@''HAVE_LCHOWN''@|$(HAVE_LCHOWN)|g' \
+	      -e 's|@''HAVE_LINK''@|$(HAVE_LINK)|g' \
+	      -e 's|@''HAVE_LINKAT''@|$(HAVE_LINKAT)|g' \
+	      -e 's|@''HAVE_PIPE''@|$(HAVE_PIPE)|g' \
+	      -e 's|@''HAVE_PIPE2''@|$(HAVE_PIPE2)|g' \
+	      -e 's|@''HAVE_PREAD''@|$(HAVE_PREAD)|g' \
+	      -e 's|@''HAVE_PWRITE''@|$(HAVE_PWRITE)|g' \
+	      -e 's|@''HAVE_READLINK''@|$(HAVE_READLINK)|g' \
+	      -e 's|@''HAVE_READLINKAT''@|$(HAVE_READLINKAT)|g' \
+	      -e 's|@''HAVE_SETHOSTNAME''@|$(HAVE_SETHOSTNAME)|g' \
+	      -e 's|@''HAVE_SLEEP''@|$(HAVE_SLEEP)|g' \
+	      -e 's|@''HAVE_SYMLINK''@|$(HAVE_SYMLINK)|g' \
+	      -e 's|@''HAVE_SYMLINKAT''@|$(HAVE_SYMLINKAT)|g' \
+	      -e 's|@''HAVE_UNLINKAT''@|$(HAVE_UNLINKAT)|g' \
+	      -e 's|@''HAVE_USLEEP''@|$(HAVE_USLEEP)|g' \
+	      -e 's|@''HAVE_DECL_ENVIRON''@|$(HAVE_DECL_ENVIRON)|g' \
+	      -e 's|@''HAVE_DECL_EXECVPE''@|$(HAVE_DECL_EXECVPE)|g' \
+	      -e 's|@''HAVE_DECL_FCHDIR''@|$(HAVE_DECL_FCHDIR)|g' \
+	      -e 's|@''HAVE_DECL_FDATASYNC''@|$(HAVE_DECL_FDATASYNC)|g' \
+	      -e 's|@''HAVE_DECL_GETDOMAINNAME''@|$(HAVE_DECL_GETDOMAINNAME)|g' \
+	      -e 's|@''HAVE_DECL_GETLOGIN''@|$(HAVE_DECL_GETLOGIN)|g' \
+	      -e 's|@''HAVE_DECL_GETLOGIN_R''@|$(HAVE_DECL_GETLOGIN_R)|g' \
+	      -e 's|@''HAVE_DECL_GETPAGESIZE''@|$(HAVE_DECL_GETPAGESIZE)|g' \
+	      -e 's|@''HAVE_DECL_GETUSERSHELL''@|$(HAVE_DECL_GETUSERSHELL)|g' \
+	      -e 's|@''HAVE_DECL_SETHOSTNAME''@|$(HAVE_DECL_SETHOSTNAME)|g' \
+	      -e 's|@''HAVE_DECL_TRUNCATE''@|$(HAVE_DECL_TRUNCATE)|g' \
+	      -e 's|@''HAVE_DECL_TTYNAME_R''@|$(HAVE_DECL_TTYNAME_R)|g' \
+	      -e 's|@''HAVE_OS_H''@|$(HAVE_OS_H)|g' \
+	      -e 's|@''HAVE_SYS_PARAM_H''@|$(HAVE_SYS_PARAM_H)|g' \
+	  | \
+	  sed -e 's|@''REPLACE_ACCESS''@|$(REPLACE_ACCESS)|g' \
+	      -e 's|@''REPLACE_CHOWN''@|$(REPLACE_CHOWN)|g' \
+	      -e 's|@''REPLACE_CLOSE''@|$(REPLACE_CLOSE)|g' \
+	      -e 's|@''REPLACE_DUP''@|$(REPLACE_DUP)|g' \
+	      -e 's|@''REPLACE_DUP2''@|$(REPLACE_DUP2)|g' \
+	      -e 's|@''REPLACE_EXECL''@|$(REPLACE_EXECL)|g' \
+	      -e 's|@''REPLACE_EXECLE''@|$(REPLACE_EXECLE)|g' \
+	      -e 's|@''REPLACE_EXECLP''@|$(REPLACE_EXECLP)|g' \
+	      -e 's|@''REPLACE_EXECV''@|$(REPLACE_EXECV)|g' \
+	      -e 's|@''REPLACE_EXECVE''@|$(REPLACE_EXECVE)|g' \
+	      -e 's|@''REPLACE_EXECVP''@|$(REPLACE_EXECVP)|g' \
+	      -e 's|@''REPLACE_EXECVPE''@|$(REPLACE_EXECVPE)|g' \
+	      -e 's|@''REPLACE_FACCESSAT''@|$(REPLACE_FACCESSAT)|g' \
+	      -e 's|@''REPLACE_FCHOWNAT''@|$(REPLACE_FCHOWNAT)|g' \
+	      -e 's|@''REPLACE_FTRUNCATE''@|$(REPLACE_FTRUNCATE)|g' \
+	      -e 's|@''REPLACE_GETCWD''@|$(REPLACE_GETCWD)|g' \
+	      -e 's|@''REPLACE_GETDOMAINNAME''@|$(REPLACE_GETDOMAINNAME)|g' \
+	      -e 's|@''REPLACE_GETDTABLESIZE''@|$(REPLACE_GETDTABLESIZE)|g' \
+	      -e 's|@''REPLACE_GETLOGIN_R''@|$(REPLACE_GETLOGIN_R)|g' \
+	      -e 's|@''REPLACE_GETGROUPS''@|$(REPLACE_GETGROUPS)|g' \
+	      -e 's|@''REPLACE_GETPAGESIZE''@|$(REPLACE_GETPAGESIZE)|g' \
+	      -e 's|@''REPLACE_GETPASS''@|$(REPLACE_GETPASS)|g' \
+	      -e 's|@''REPLACE_ISATTY''@|$(REPLACE_ISATTY)|g' \
+	      -e 's|@''REPLACE_LCHOWN''@|$(REPLACE_LCHOWN)|g' \
+	      -e 's|@''REPLACE_LINK''@|$(REPLACE_LINK)|g' \
+	      -e 's|@''REPLACE_LINKAT''@|$(REPLACE_LINKAT)|g' \
+	      -e 's|@''REPLACE_LSEEK''@|$(REPLACE_LSEEK)|g' \
+	      -e 's|@''REPLACE_PREAD''@|$(REPLACE_PREAD)|g' \
+	      -e 's|@''REPLACE_PWRITE''@|$(REPLACE_PWRITE)|g' \
+	      -e 's|@''REPLACE_READ''@|$(REPLACE_READ)|g' \
+	      -e 's|@''REPLACE_READLINK''@|$(REPLACE_READLINK)|g' \
+	      -e 's|@''REPLACE_READLINKAT''@|$(REPLACE_READLINKAT)|g' \
+	      -e 's|@''REPLACE_RMDIR''@|$(REPLACE_RMDIR)|g' \
+	      -e 's|@''REPLACE_SLEEP''@|$(REPLACE_SLEEP)|g' \
+	      -e 's|@''REPLACE_SYMLINK''@|$(REPLACE_SYMLINK)|g' \
+	      -e 's|@''REPLACE_SYMLINKAT''@|$(REPLACE_SYMLINKAT)|g' \
+	      -e 's|@''REPLACE_TRUNCATE''@|$(REPLACE_TRUNCATE)|g' \
+	      -e 's|@''REPLACE_TTYNAME_R''@|$(REPLACE_TTYNAME_R)|g' \
+	      -e 's|@''REPLACE_UNLINK''@|$(REPLACE_UNLINK)|g' \
+	      -e 's|@''REPLACE_UNLINKAT''@|$(REPLACE_UNLINKAT)|g' \
+	      -e 's|@''REPLACE_USLEEP''@|$(REPLACE_USLEEP)|g' \
+	      -e 's|@''REPLACE_WRITE''@|$(REPLACE_WRITE)|g' \
+	      -e 's|@''UNISTD_H_HAVE_SYS_RANDOM_H''@|$(UNISTD_H_HAVE_SYS_RANDOM_H)|g' \
+	      -e 's|@''UNISTD_H_HAVE_WINSOCK2_H''@|$(UNISTD_H_HAVE_WINSOCK2_H)|g' \
+	      -e 's|@''UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS''@|$(UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += unistd.h unistd.h-t
+
+EXTRA_DIST += unistd.in.h
+
+## end   gnulib module unistd
+
+## begin gnulib module unistd-safer
+
+libgreputils_a_SOURCES += dup-safer.c fd-safer.c pipe-safer.c
+
+EXTRA_DIST += unistd--.h unistd-safer.h
+
+## end   gnulib module unistd-safer
+
+## begin gnulib module unistr/base
+
+BUILT_SOURCES += $(LIBUNISTRING_UNISTR_H)
+
+unistr.h: unistr.in.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/unistr.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+MOSTLYCLEANFILES += unistr.h unistr.h-t
+
+EXTRA_DIST += unistr.in.h
+
+## end   gnulib module unistr/base
+
+## begin gnulib module unistr/u8-mbtoucr
+
+if LIBUNISTRING_COMPILE_UNISTR_U8_MBTOUCR
+libgreputils_a_SOURCES += unistr/u8-mbtoucr.c
+endif
+
+## end   gnulib module unistr/u8-mbtoucr
+
+## begin gnulib module unistr/u8-uctomb
+
+if LIBUNISTRING_COMPILE_UNISTR_U8_UCTOMB
+libgreputils_a_SOURCES += unistr/u8-uctomb.c unistr/u8-uctomb-aux.c
+endif
+
+## end   gnulib module unistr/u8-uctomb
+
+## begin gnulib module unitypes
+
+BUILT_SOURCES += $(LIBUNISTRING_UNITYPES_H)
+
+unitypes.h: unitypes.in.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/unitypes.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+MOSTLYCLEANFILES += unitypes.h unitypes.h-t
+
+EXTRA_DIST += unitypes.in.h
+
+## end   gnulib module unitypes
+
+## begin gnulib module uniwidth/base
+
+BUILT_SOURCES += $(LIBUNISTRING_UNIWIDTH_H)
+
+uniwidth.h: uniwidth.in.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/uniwidth.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+MOSTLYCLEANFILES += uniwidth.h uniwidth.h-t
+
+EXTRA_DIST += localcharset.h uniwidth.in.h
+
+## end   gnulib module uniwidth/base
+
+## begin gnulib module uniwidth/width
+
+if LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH
+libgreputils_a_SOURCES += uniwidth/width.c
+endif
+
+EXTRA_DIST += uniwidth/cjk.h
+
+## end   gnulib module uniwidth/width
+
+## begin gnulib module unlocked-io-internal
+
+
+EXTRA_DIST += unlocked-io.h
+
+## end   gnulib module unlocked-io-internal
+
+## begin gnulib module update-copyright
+
+
+EXTRA_DIST += $(top_srcdir)/build-aux/update-copyright
+
+## end   gnulib module update-copyright
+
+## begin gnulib module useless-if-before-free
+
+
+EXTRA_DIST += $(top_srcdir)/build-aux/useless-if-before-free
+
+## end   gnulib module useless-if-before-free
+
+## begin gnulib module vc-list-files
+
+
+EXTRA_DIST += $(top_srcdir)/build-aux/vc-list-files
+
+## end   gnulib module vc-list-files
+
+## begin gnulib module verify
+
+
+EXTRA_DIST += verify.h
+
+## end   gnulib module verify
+
+## begin gnulib module version-etc
+
+libgreputils_a_SOURCES += version-etc.h version-etc.c
+
+## end   gnulib module version-etc
+
+## begin gnulib module version-etc-fsf
+
+libgreputils_a_SOURCES += version-etc-fsf.c
+
+## end   gnulib module version-etc-fsf
+
+## begin gnulib module wchar
+
+BUILT_SOURCES += wchar.h
+
+# We need the following in order to create <wchar.h> when the system
+# version does not work standalone.
+wchar.h: wchar.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''HAVE_FEATURES_H''@|$(HAVE_FEATURES_H)|g' \
+	      -e 's|@''NEXT_WCHAR_H''@|$(NEXT_WCHAR_H)|g' \
+	      -e 's|@''HAVE_WCHAR_H''@|$(HAVE_WCHAR_H)|g' \
+	      -e 's/@''HAVE_CRTDEFS_H''@/$(HAVE_CRTDEFS_H)/g' \
+	      -e 's/@''GNULIBHEADERS_OVERRIDE_WINT_T''@/$(GNULIBHEADERS_OVERRIDE_WINT_T)/g' \
+	      -e 's/@''GNULIB_BTOWC''@/$(GL_GNULIB_BTOWC)/g' \
+	      -e 's/@''GNULIB_WCTOB''@/$(GL_GNULIB_WCTOB)/g' \
+	      -e 's/@''GNULIB_MBSINIT''@/$(GL_GNULIB_MBSINIT)/g' \
+	      -e 's/@''GNULIB_MBRTOWC''@/$(GL_GNULIB_MBRTOWC)/g' \
+	      -e 's/@''GNULIB_MBRLEN''@/$(GL_GNULIB_MBRLEN)/g' \
+	      -e 's/@''GNULIB_MBSRTOWCS''@/$(GL_GNULIB_MBSRTOWCS)/g' \
+	      -e 's/@''GNULIB_MBSNRTOWCS''@/$(GL_GNULIB_MBSNRTOWCS)/g' \
+	      -e 's/@''GNULIB_WCRTOMB''@/$(GL_GNULIB_WCRTOMB)/g' \
+	      -e 's/@''GNULIB_WCSRTOMBS''@/$(GL_GNULIB_WCSRTOMBS)/g' \
+	      -e 's/@''GNULIB_WCSNRTOMBS''@/$(GL_GNULIB_WCSNRTOMBS)/g' \
+	      -e 's/@''GNULIB_WCWIDTH''@/$(GL_GNULIB_WCWIDTH)/g' \
+	      -e 's/@''GNULIB_WMEMCHR''@/$(GL_GNULIB_WMEMCHR)/g' \
+	      -e 's/@''GNULIB_WMEMCMP''@/$(GL_GNULIB_WMEMCMP)/g' \
+	      -e 's/@''GNULIB_WMEMCPY''@/$(GL_GNULIB_WMEMCPY)/g' \
+	      -e 's/@''GNULIB_WMEMMOVE''@/$(GL_GNULIB_WMEMMOVE)/g' \
+	      -e 's/@''GNULIB_WMEMPCPY''@/$(GL_GNULIB_WMEMPCPY)/g' \
+	      -e 's/@''GNULIB_WMEMSET''@/$(GL_GNULIB_WMEMSET)/g' \
+	      -e 's/@''GNULIB_WCSLEN''@/$(GL_GNULIB_WCSLEN)/g' \
+	      -e 's/@''GNULIB_WCSNLEN''@/$(GL_GNULIB_WCSNLEN)/g' \
+	      -e 's/@''GNULIB_WCSCPY''@/$(GL_GNULIB_WCSCPY)/g' \
+	      -e 's/@''GNULIB_WCPCPY''@/$(GL_GNULIB_WCPCPY)/g' \
+	      -e 's/@''GNULIB_WCSNCPY''@/$(GL_GNULIB_WCSNCPY)/g' \
+	      -e 's/@''GNULIB_WCPNCPY''@/$(GL_GNULIB_WCPNCPY)/g' \
+	      -e 's/@''GNULIB_WCSCAT''@/$(GL_GNULIB_WCSCAT)/g' \
+	      -e 's/@''GNULIB_WCSNCAT''@/$(GL_GNULIB_WCSNCAT)/g' \
+	      -e 's/@''GNULIB_WCSCMP''@/$(GL_GNULIB_WCSCMP)/g' \
+	      -e 's/@''GNULIB_WCSNCMP''@/$(GL_GNULIB_WCSNCMP)/g' \
+	      -e 's/@''GNULIB_WCSCASECMP''@/$(GL_GNULIB_WCSCASECMP)/g' \
+	      -e 's/@''GNULIB_WCSNCASECMP''@/$(GL_GNULIB_WCSNCASECMP)/g' \
+	      -e 's/@''GNULIB_WCSCOLL''@/$(GL_GNULIB_WCSCOLL)/g' \
+	      -e 's/@''GNULIB_WCSXFRM''@/$(GL_GNULIB_WCSXFRM)/g' \
+	      -e 's/@''GNULIB_WCSDUP''@/$(GL_GNULIB_WCSDUP)/g' \
+	      -e 's/@''GNULIB_WCSCHR''@/$(GL_GNULIB_WCSCHR)/g' \
+	      -e 's/@''GNULIB_WCSRCHR''@/$(GL_GNULIB_WCSRCHR)/g' \
+	      -e 's/@''GNULIB_WCSCSPN''@/$(GL_GNULIB_WCSCSPN)/g' \
+	      -e 's/@''GNULIB_WCSSPN''@/$(GL_GNULIB_WCSSPN)/g' \
+	      -e 's/@''GNULIB_WCSPBRK''@/$(GL_GNULIB_WCSPBRK)/g' \
+	      -e 's/@''GNULIB_WCSSTR''@/$(GL_GNULIB_WCSSTR)/g' \
+	      -e 's/@''GNULIB_WCSTOK''@/$(GL_GNULIB_WCSTOK)/g' \
+	      -e 's/@''GNULIB_WCSWIDTH''@/$(GL_GNULIB_WCSWIDTH)/g' \
+	      -e 's/@''GNULIB_WCSFTIME''@/$(GL_GNULIB_WCSFTIME)/g' \
+	      -e 's/@''GNULIB_MDA_WCSDUP''@/$(GL_GNULIB_MDA_WCSDUP)/g' \
+	      < $(srcdir)/wchar.in.h | \
+	  sed -e 's|@''HAVE_WINT_T''@|$(HAVE_WINT_T)|g' \
+	      -e 's|@''HAVE_BTOWC''@|$(HAVE_BTOWC)|g' \
+	      -e 's|@''HAVE_MBSINIT''@|$(HAVE_MBSINIT)|g' \
+	      -e 's|@''HAVE_MBRTOWC''@|$(HAVE_MBRTOWC)|g' \
+	      -e 's|@''HAVE_MBRLEN''@|$(HAVE_MBRLEN)|g' \
+	      -e 's|@''HAVE_MBSRTOWCS''@|$(HAVE_MBSRTOWCS)|g' \
+	      -e 's|@''HAVE_MBSNRTOWCS''@|$(HAVE_MBSNRTOWCS)|g' \
+	      -e 's|@''HAVE_WCRTOMB''@|$(HAVE_WCRTOMB)|g' \
+	      -e 's|@''HAVE_WCSRTOMBS''@|$(HAVE_WCSRTOMBS)|g' \
+	      -e 's|@''HAVE_WCSNRTOMBS''@|$(HAVE_WCSNRTOMBS)|g' \
+	      -e 's|@''HAVE_WMEMCHR''@|$(HAVE_WMEMCHR)|g' \
+	      -e 's|@''HAVE_WMEMCMP''@|$(HAVE_WMEMCMP)|g' \
+	      -e 's|@''HAVE_WMEMCPY''@|$(HAVE_WMEMCPY)|g' \
+	      -e 's|@''HAVE_WMEMMOVE''@|$(HAVE_WMEMMOVE)|g' \
+	      -e 's|@''HAVE_WMEMPCPY''@|$(HAVE_WMEMPCPY)|g' \
+	      -e 's|@''HAVE_WMEMSET''@|$(HAVE_WMEMSET)|g' \
+	      -e 's|@''HAVE_WCSLEN''@|$(HAVE_WCSLEN)|g' \
+	      -e 's|@''HAVE_WCSNLEN''@|$(HAVE_WCSNLEN)|g' \
+	      -e 's|@''HAVE_WCSCPY''@|$(HAVE_WCSCPY)|g' \
+	      -e 's|@''HAVE_WCPCPY''@|$(HAVE_WCPCPY)|g' \
+	      -e 's|@''HAVE_WCSNCPY''@|$(HAVE_WCSNCPY)|g' \
+	      -e 's|@''HAVE_WCPNCPY''@|$(HAVE_WCPNCPY)|g' \
+	      -e 's|@''HAVE_WCSCAT''@|$(HAVE_WCSCAT)|g' \
+	      -e 's|@''HAVE_WCSNCAT''@|$(HAVE_WCSNCAT)|g' \
+	      -e 's|@''HAVE_WCSCMP''@|$(HAVE_WCSCMP)|g' \
+	      -e 's|@''HAVE_WCSNCMP''@|$(HAVE_WCSNCMP)|g' \
+	      -e 's|@''HAVE_WCSCASECMP''@|$(HAVE_WCSCASECMP)|g' \
+	      -e 's|@''HAVE_WCSNCASECMP''@|$(HAVE_WCSNCASECMP)|g' \
+	      -e 's|@''HAVE_WCSCOLL''@|$(HAVE_WCSCOLL)|g' \
+	      -e 's|@''HAVE_WCSXFRM''@|$(HAVE_WCSXFRM)|g' \
+	      -e 's|@''HAVE_WCSDUP''@|$(HAVE_WCSDUP)|g' \
+	      -e 's|@''HAVE_WCSCHR''@|$(HAVE_WCSCHR)|g' \
+	      -e 's|@''HAVE_WCSRCHR''@|$(HAVE_WCSRCHR)|g' \
+	      -e 's|@''HAVE_WCSCSPN''@|$(HAVE_WCSCSPN)|g' \
+	      -e 's|@''HAVE_WCSSPN''@|$(HAVE_WCSSPN)|g' \
+	      -e 's|@''HAVE_WCSPBRK''@|$(HAVE_WCSPBRK)|g' \
+	      -e 's|@''HAVE_WCSSTR''@|$(HAVE_WCSSTR)|g' \
+	      -e 's|@''HAVE_WCSTOK''@|$(HAVE_WCSTOK)|g' \
+	      -e 's|@''HAVE_WCSWIDTH''@|$(HAVE_WCSWIDTH)|g' \
+	      -e 's|@''HAVE_WCSFTIME''@|$(HAVE_WCSFTIME)|g' \
+	      -e 's|@''HAVE_DECL_WCTOB''@|$(HAVE_DECL_WCTOB)|g' \
+	      -e 's|@''HAVE_DECL_WCSDUP''@|$(HAVE_DECL_WCSDUP)|g' \
+	      -e 's|@''HAVE_DECL_WCWIDTH''@|$(HAVE_DECL_WCWIDTH)|g' \
+	  | \
+	  sed -e 's|@''REPLACE_MBSTATE_T''@|$(REPLACE_MBSTATE_T)|g' \
+	      -e 's|@''REPLACE_BTOWC''@|$(REPLACE_BTOWC)|g' \
+	      -e 's|@''REPLACE_WCTOB''@|$(REPLACE_WCTOB)|g' \
+	      -e 's|@''REPLACE_MBSINIT''@|$(REPLACE_MBSINIT)|g' \
+	      -e 's|@''REPLACE_MBRTOWC''@|$(REPLACE_MBRTOWC)|g' \
+	      -e 's|@''REPLACE_MBRLEN''@|$(REPLACE_MBRLEN)|g' \
+	      -e 's|@''REPLACE_MBSRTOWCS''@|$(REPLACE_MBSRTOWCS)|g' \
+	      -e 's|@''REPLACE_MBSNRTOWCS''@|$(REPLACE_MBSNRTOWCS)|g' \
+	      -e 's|@''REPLACE_WCRTOMB''@|$(REPLACE_WCRTOMB)|g' \
+	      -e 's|@''REPLACE_WCSRTOMBS''@|$(REPLACE_WCSRTOMBS)|g' \
+	      -e 's|@''REPLACE_WCSNRTOMBS''@|$(REPLACE_WCSNRTOMBS)|g' \
+	      -e 's|@''REPLACE_WCWIDTH''@|$(REPLACE_WCWIDTH)|g' \
+	      -e 's|@''REPLACE_WCSWIDTH''@|$(REPLACE_WCSWIDTH)|g' \
+	      -e 's|@''REPLACE_WCSFTIME''@|$(REPLACE_WCSFTIME)|g' \
+	      -e 's|@''REPLACE_WCSTOK''@|$(REPLACE_WCSTOK)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += wchar.h wchar.h-t
+
+EXTRA_DIST += wchar.in.h
+
+## end   gnulib module wchar
+
+## begin gnulib module wcrtomb
+
+
+EXTRA_DIST += wcrtomb.c
+
+EXTRA_libgreputils_a_SOURCES += wcrtomb.c
+
+## end   gnulib module wcrtomb
+
+## begin gnulib module wctob
+
+
+EXTRA_DIST += wctob.c
+
+EXTRA_libgreputils_a_SOURCES += wctob.c
+
+## end   gnulib module wctob
+
+## begin gnulib module wctomb
+
+
+EXTRA_DIST += wctomb-impl.h wctomb.c
+
+EXTRA_libgreputils_a_SOURCES += wctomb.c
+
+## end   gnulib module wctomb
+
+## begin gnulib module wctype-h
+
+BUILT_SOURCES += wctype.h
+libgreputils_a_SOURCES += wctype-h.c
+
+# We need the following in order to create <wctype.h> when the system
+# doesn't have one that works with the given compiler.
+wctype.h: wctype.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H)
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+	      -e 's/@''HAVE_WCTYPE_H''@/$(HAVE_WCTYPE_H)/g' \
+	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+	      -e 's|@''NEXT_WCTYPE_H''@|$(NEXT_WCTYPE_H)|g' \
+	      -e 's/@''HAVE_CRTDEFS_H''@/$(HAVE_CRTDEFS_H)/g' \
+	      -e 's/@''GNULIBHEADERS_OVERRIDE_WINT_T''@/$(GNULIBHEADERS_OVERRIDE_WINT_T)/g' \
+	      -e 's/@''GNULIB_ISWBLANK''@/$(GL_GNULIB_ISWBLANK)/g' \
+	      -e 's/@''GNULIB_ISWDIGIT''@/$(GL_GNULIB_ISWDIGIT)/g' \
+	      -e 's/@''GNULIB_ISWXDIGIT''@/$(GL_GNULIB_ISWXDIGIT)/g' \
+	      -e 's/@''GNULIB_WCTYPE''@/$(GL_GNULIB_WCTYPE)/g' \
+	      -e 's/@''GNULIB_ISWCTYPE''@/$(GL_GNULIB_ISWCTYPE)/g' \
+	      -e 's/@''GNULIB_WCTRANS''@/$(GL_GNULIB_WCTRANS)/g' \
+	      -e 's/@''GNULIB_TOWCTRANS''@/$(GL_GNULIB_TOWCTRANS)/g' \
+	      -e 's/@''HAVE_ISWBLANK''@/$(HAVE_ISWBLANK)/g' \
+	      -e 's/@''HAVE_ISWCNTRL''@/$(HAVE_ISWCNTRL)/g' \
+	      -e 's/@''HAVE_WCTYPE_T''@/$(HAVE_WCTYPE_T)/g' \
+	      -e 's/@''HAVE_WCTRANS_T''@/$(HAVE_WCTRANS_T)/g' \
+	      -e 's/@''HAVE_WINT_T''@/$(HAVE_WINT_T)/g' \
+	      -e 's/@''REPLACE_ISWBLANK''@/$(REPLACE_ISWBLANK)/g' \
+	      -e 's/@''REPLACE_ISWDIGIT''@/$(REPLACE_ISWDIGIT)/g' \
+	      -e 's/@''REPLACE_ISWXDIGIT''@/$(REPLACE_ISWXDIGIT)/g' \
+	      -e 's/@''REPLACE_ISWCNTRL''@/$(REPLACE_ISWCNTRL)/g' \
+	      -e 's/@''REPLACE_TOWLOWER''@/$(REPLACE_TOWLOWER)/g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+	      < $(srcdir)/wctype.in.h; \
+	} > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += wctype.h wctype.h-t
+
+EXTRA_DIST += wctype.in.h
+
+## end   gnulib module wctype-h
+
+## begin gnulib module wcwidth
+
+
+EXTRA_DIST += wcwidth.c
+
+EXTRA_libgreputils_a_SOURCES += wcwidth.c
+
+## end   gnulib module wcwidth
+
+## begin gnulib module windows-mutex
+
+
+EXTRA_DIST += windows-initguard.h windows-mutex.c windows-mutex.h
+
+EXTRA_libgreputils_a_SOURCES += windows-mutex.c
+
+## end   gnulib module windows-mutex
+
+## begin gnulib module windows-once
+
+
+EXTRA_DIST += windows-once.c windows-once.h
+
+EXTRA_libgreputils_a_SOURCES += windows-once.c
+
+## end   gnulib module windows-once
+
+## begin gnulib module windows-recmutex
+
+
+EXTRA_DIST += windows-initguard.h windows-recmutex.c windows-recmutex.h
+
+EXTRA_libgreputils_a_SOURCES += windows-recmutex.c
+
+## end   gnulib module windows-recmutex
+
+## begin gnulib module windows-rwlock
+
+
+EXTRA_DIST += windows-initguard.h windows-rwlock.c windows-rwlock.h
+
+EXTRA_libgreputils_a_SOURCES += windows-rwlock.c
+
+## end   gnulib module windows-rwlock
+
+## begin gnulib module wmemchr
+
+
+EXTRA_DIST += wmemchr-impl.h wmemchr.c
+
+EXTRA_libgreputils_a_SOURCES += wmemchr.c
+
+## end   gnulib module wmemchr
+
+## begin gnulib module wmempcpy
+
+
+EXTRA_DIST += wmempcpy.c
+
+EXTRA_libgreputils_a_SOURCES += wmempcpy.c
+
+## end   gnulib module wmempcpy
+
+## begin gnulib module xalloc
+
+libgreputils_a_SOURCES += xmalloc.c
+
+EXTRA_DIST += xalloc.h
+
+## end   gnulib module xalloc
+
+## begin gnulib module xalloc-die
+
+libgreputils_a_SOURCES += xalloc-die.c
+
+EXTRA_DIST += xalloc.h
+
+## end   gnulib module xalloc-die
+
+## begin gnulib module xalloc-oversized
+
+
+EXTRA_DIST += xalloc-oversized.h
+
+## end   gnulib module xalloc-oversized
+
+## begin gnulib module xbinary-io
+
+libgreputils_a_SOURCES += xbinary-io.h xbinary-io.c
+
+## end   gnulib module xbinary-io
+
+## begin gnulib module xstriconv
+
+libgreputils_a_SOURCES += xstriconv.h xstriconv.c
+
+## end   gnulib module xstriconv
+
+## begin gnulib module xstrtoimax
+
+libgreputils_a_SOURCES += xstrtoimax.c
+
+## end   gnulib module xstrtoimax
+
+## begin gnulib module xstrtol
+
+libgreputils_a_SOURCES += xstrtol.c xstrtoul.c
+
+EXTRA_DIST += xstrtol.h
+
+## end   gnulib module xstrtol
+
+
+mostlyclean-local: mostlyclean-generic
+	@for dir in '' $(MOSTLYCLEANDIRS); do \
+	  if test -n "$$dir" && test -d $$dir; then \
+	    echo "rmdir $$dir"; rmdir $$dir; \
+	  fi; \
+	done; \
+	:
diff --git a/src/grep/lib/hard-locale.c b/src/grep/lib/hard-locale.c
new file mode 100644
index 0000000..8b6802d
--- /dev/null
+++ b/src/grep/lib/hard-locale.c
@@ -0,0 +1,35 @@
+/* hard-locale.c -- Determine whether a locale is hard.
+
+   Copyright (C) 1997-1999, 2002-2004, 2006-2007, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "hard-locale.h"
+
+#include <locale.h>
+#include <string.h>
+
+bool
+hard_locale (int category)
+{
+  char locale[SETLOCALE_NULL_MAX];
+
+  if (setlocale_null_r (category, locale, sizeof (locale)))
+    return false;
+
+  return !(strcmp (locale, "C") == 0 || strcmp (locale, "POSIX") == 0);
+}
diff --git a/src/grep/lib/hard-locale.h b/src/grep/lib/hard-locale.h
new file mode 100644
index 0000000..eba6601
--- /dev/null
+++ b/src/grep/lib/hard-locale.h
@@ -0,0 +1,28 @@
+/* Determine whether a locale is hard.
+
+   Copyright (C) 1999, 2003-2004, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef HARD_LOCALE_H_
+# define HARD_LOCALE_H_ 1
+
+# include <stdbool.h>
+
+/* Return true if the specified CATEGORY of the current locale is hard, i.e.
+   different from the C or POSIX locale that has a fixed behavior.
+   CATEGORY must be one of the LC_* values, but not LC_ALL.  */
+extern bool hard_locale (int category);
+
+#endif /* HARD_LOCALE_H_ */
diff --git a/src/grep/lib/hash.c b/src/grep/lib/hash.c
new file mode 100644
index 0000000..5f5f8fc
--- /dev/null
+++ b/src/grep/lib/hash.c
@@ -0,0 +1,1106 @@
+/* hash - hashing table processing.
+
+   Copyright (C) 1998-2004, 2006-2007, 2009-2021 Free Software Foundation, Inc.
+
+   Written by Jim Meyering, 1992.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* A generic hash table package.  */
+
+/* Define USE_OBSTACK to 1 if you want the allocator to use obstacks instead
+   of malloc.  If you change USE_OBSTACK, you have to recompile!  */
+
+#include <config.h>
+
+#include "hash.h"
+
+#include "bitrotate.h"
+#include "xalloc-oversized.h"
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#if USE_OBSTACK
+# include "obstack.h"
+# ifndef obstack_chunk_alloc
+#  define obstack_chunk_alloc malloc
+# endif
+# ifndef obstack_chunk_free
+#  define obstack_chunk_free free
+# endif
+#endif
+
+struct hash_entry
+  {
+    void *data;
+    struct hash_entry *next;
+  };
+
+struct hash_table
+  {
+    /* The array of buckets starts at BUCKET and extends to BUCKET_LIMIT-1,
+       for a possibility of N_BUCKETS.  Among those, N_BUCKETS_USED buckets
+       are not empty, there are N_ENTRIES active entries in the table.  */
+    struct hash_entry *bucket;
+    struct hash_entry const *bucket_limit;
+    size_t n_buckets;
+    size_t n_buckets_used;
+    size_t n_entries;
+
+    /* Tuning arguments, kept in a physically separate structure.  */
+    const Hash_tuning *tuning;
+
+    /* Three functions are given to 'hash_initialize', see the documentation
+       block for this function.  In a word, HASHER randomizes a user entry
+       into a number up from 0 up to some maximum minus 1; COMPARATOR returns
+       true if two user entries compare equally; and DATA_FREER is the cleanup
+       function for a user entry.  */
+    Hash_hasher hasher;
+    Hash_comparator comparator;
+    Hash_data_freer data_freer;
+
+    /* A linked list of freed struct hash_entry structs.  */
+    struct hash_entry *free_entry_list;
+
+#if USE_OBSTACK
+    /* Whenever obstacks are used, it is possible to allocate all overflowed
+       entries into a single stack, so they all can be freed in a single
+       operation.  It is not clear if the speedup is worth the trouble.  */
+    struct obstack entry_stack;
+#endif
+  };
+
+/* A hash table contains many internal entries, each holding a pointer to
+   some user-provided data (also called a user entry).  An entry indistinctly
+   refers to both the internal entry and its associated user entry.  A user
+   entry contents may be hashed by a randomization function (the hashing
+   function, or just "hasher" for short) into a number (or "slot") between 0
+   and the current table size.  At each slot position in the hash table,
+   starts a linked chain of entries for which the user data all hash to this
+   slot.  A bucket is the collection of all entries hashing to the same slot.
+
+   A good "hasher" function will distribute entries rather evenly in buckets.
+   In the ideal case, the length of each bucket is roughly the number of
+   entries divided by the table size.  Finding the slot for a data is usually
+   done in constant time by the "hasher", and the later finding of a precise
+   entry is linear in time with the size of the bucket.  Consequently, a
+   larger hash table size (that is, a larger number of buckets) is prone to
+   yielding shorter chains, *given* the "hasher" function behaves properly.
+
+   Long buckets slow down the lookup algorithm.  One might use big hash table
+   sizes in hope to reduce the average length of buckets, but this might
+   become inordinate, as unused slots in the hash table take some space.  The
+   best bet is to make sure you are using a good "hasher" function (beware
+   that those are not that easy to write! :-), and to use a table size
+   larger than the actual number of entries.  */
+
+/* If an insertion makes the ratio of nonempty buckets to table size larger
+   than the growth threshold (a number between 0.0 and 1.0), then increase
+   the table size by multiplying by the growth factor (a number greater than
+   1.0).  The growth threshold defaults to 0.8, and the growth factor
+   defaults to 1.414, meaning that the table will have doubled its size
+   every second time 80% of the buckets get used.  */
+#define DEFAULT_GROWTH_THRESHOLD 0.8f
+#define DEFAULT_GROWTH_FACTOR 1.414f
+
+/* If a deletion empties a bucket and causes the ratio of used buckets to
+   table size to become smaller than the shrink threshold (a number between
+   0.0 and 1.0), then shrink the table by multiplying by the shrink factor (a
+   number greater than the shrink threshold but smaller than 1.0).  The shrink
+   threshold and factor default to 0.0 and 1.0, meaning that the table never
+   shrinks.  */
+#define DEFAULT_SHRINK_THRESHOLD 0.0f
+#define DEFAULT_SHRINK_FACTOR 1.0f
+
+/* Use this to initialize or reset a TUNING structure to
+   some sensible values. */
+static const Hash_tuning default_tuning =
+  {
+    DEFAULT_SHRINK_THRESHOLD,
+    DEFAULT_SHRINK_FACTOR,
+    DEFAULT_GROWTH_THRESHOLD,
+    DEFAULT_GROWTH_FACTOR,
+    false
+  };
+
+/* Information and lookup.  */
+
+size_t
+hash_get_n_buckets (const Hash_table *table)
+{
+  return table->n_buckets;
+}
+
+size_t
+hash_get_n_buckets_used (const Hash_table *table)
+{
+  return table->n_buckets_used;
+}
+
+size_t
+hash_get_n_entries (const Hash_table *table)
+{
+  return table->n_entries;
+}
+
+size_t
+hash_get_max_bucket_length (const Hash_table *table)
+{
+  struct hash_entry const *bucket;
+  size_t max_bucket_length = 0;
+
+  for (bucket = table->bucket; bucket < table->bucket_limit; bucket++)
+    {
+      if (bucket->data)
+        {
+          struct hash_entry const *cursor = bucket;
+          size_t bucket_length = 1;
+
+          while (cursor = cursor->next, cursor)
+            bucket_length++;
+
+          if (bucket_length > max_bucket_length)
+            max_bucket_length = bucket_length;
+        }
+    }
+
+  return max_bucket_length;
+}
+
+bool
+hash_table_ok (const Hash_table *table)
+{
+  struct hash_entry const *bucket;
+  size_t n_buckets_used = 0;
+  size_t n_entries = 0;
+
+  for (bucket = table->bucket; bucket < table->bucket_limit; bucket++)
+    {
+      if (bucket->data)
+        {
+          struct hash_entry const *cursor = bucket;
+
+          /* Count bucket head.  */
+          n_buckets_used++;
+          n_entries++;
+
+          /* Count bucket overflow.  */
+          while (cursor = cursor->next, cursor)
+            n_entries++;
+        }
+    }
+
+  if (n_buckets_used == table->n_buckets_used && n_entries == table->n_entries)
+    return true;
+
+  return false;
+}
+
+void
+hash_print_statistics (const Hash_table *table, FILE *stream)
+{
+  size_t n_entries = hash_get_n_entries (table);
+  size_t n_buckets = hash_get_n_buckets (table);
+  size_t n_buckets_used = hash_get_n_buckets_used (table);
+  size_t max_bucket_length = hash_get_max_bucket_length (table);
+
+  fprintf (stream, "# entries:         %lu\n", (unsigned long int) n_entries);
+  fprintf (stream, "# buckets:         %lu\n", (unsigned long int) n_buckets);
+  fprintf (stream, "# buckets used:    %lu (%.2f%%)\n",
+           (unsigned long int) n_buckets_used,
+           (100.0 * n_buckets_used) / n_buckets);
+  fprintf (stream, "max bucket length: %lu\n",
+           (unsigned long int) max_bucket_length);
+}
+
+/* Hash KEY and return a pointer to the selected bucket.
+   If TABLE->hasher misbehaves, abort.  */
+static struct hash_entry *
+safe_hasher (const Hash_table *table, const void *key)
+{
+  size_t n = table->hasher (key, table->n_buckets);
+  if (! (n < table->n_buckets))
+    abort ();
+  return table->bucket + n;
+}
+
+void *
+hash_lookup (const Hash_table *table, const void *entry)
+{
+  struct hash_entry const *bucket = safe_hasher (table, entry);
+  struct hash_entry const *cursor;
+
+  if (bucket->data == NULL)
+    return NULL;
+
+  for (cursor = bucket; cursor; cursor = cursor->next)
+    if (entry == cursor->data || table->comparator (entry, cursor->data))
+      return cursor->data;
+
+  return NULL;
+}
+
+/* Walking.  */
+
+void *
+hash_get_first (const Hash_table *table)
+{
+  struct hash_entry const *bucket;
+
+  if (table->n_entries == 0)
+    return NULL;
+
+  for (bucket = table->bucket; ; bucket++)
+    if (! (bucket < table->bucket_limit))
+      abort ();
+    else if (bucket->data)
+      return bucket->data;
+}
+
+void *
+hash_get_next (const Hash_table *table, const void *entry)
+{
+  struct hash_entry const *bucket = safe_hasher (table, entry);
+  struct hash_entry const *cursor;
+
+  /* Find next entry in the same bucket.  */
+  cursor = bucket;
+  do
+    {
+      if (cursor->data == entry && cursor->next)
+        return cursor->next->data;
+      cursor = cursor->next;
+    }
+  while (cursor != NULL);
+
+  /* Find first entry in any subsequent bucket.  */
+  while (++bucket < table->bucket_limit)
+    if (bucket->data)
+      return bucket->data;
+
+  /* None found.  */
+  return NULL;
+}
+
+size_t
+hash_get_entries (const Hash_table *table, void **buffer,
+                  size_t buffer_size)
+{
+  size_t counter = 0;
+  struct hash_entry const *bucket;
+  struct hash_entry const *cursor;
+
+  for (bucket = table->bucket; bucket < table->bucket_limit; bucket++)
+    {
+      if (bucket->data)
+        {
+          for (cursor = bucket; cursor; cursor = cursor->next)
+            {
+              if (counter >= buffer_size)
+                return counter;
+              buffer[counter++] = cursor->data;
+            }
+        }
+    }
+
+  return counter;
+}
+
+size_t
+hash_do_for_each (const Hash_table *table, Hash_processor processor,
+                  void *processor_data)
+{
+  size_t counter = 0;
+  struct hash_entry const *bucket;
+  struct hash_entry const *cursor;
+
+  for (bucket = table->bucket; bucket < table->bucket_limit; bucket++)
+    {
+      if (bucket->data)
+        {
+          for (cursor = bucket; cursor; cursor = cursor->next)
+            {
+              if (! processor (cursor->data, processor_data))
+                return counter;
+              counter++;
+            }
+        }
+    }
+
+  return counter;
+}
+
+/* Allocation and clean-up.  */
+
+#if USE_DIFF_HASH
+
+/* About hashings, Paul Eggert writes to me (FP), on 1994-01-01: "Please see
+   B. J. McKenzie, R. Harries & T. Bell, Selecting a hashing algorithm,
+   Software--practice & experience 20, 2 (Feb 1990), 209-224.  Good hash
+   algorithms tend to be domain-specific, so what's good for [diffutils'] io.c
+   may not be good for your application."  */
+
+size_t
+hash_string (const char *string, size_t n_buckets)
+{
+# define HASH_ONE_CHAR(Value, Byte) \
+  ((Byte) + rotl_sz (Value, 7))
+
+  size_t value = 0;
+  unsigned char ch;
+
+  for (; (ch = *string); string++)
+    value = HASH_ONE_CHAR (value, ch);
+  return value % n_buckets;
+
+# undef HASH_ONE_CHAR
+}
+
+#else /* not USE_DIFF_HASH */
+
+/* This one comes from 'recode', and performs a bit better than the above as
+   per a few experiments.  It is inspired from a hashing routine found in the
+   very old Cyber 'snoop', itself written in typical Greg Mansfield style.
+   (By the way, what happened to this excellent man?  Is he still alive?)  */
+
+size_t
+hash_string (const char *string, size_t n_buckets)
+{
+  size_t value = 0;
+  unsigned char ch;
+
+  for (; (ch = *string); string++)
+    value = (value * 31 + ch) % n_buckets;
+  return value;
+}
+
+#endif /* not USE_DIFF_HASH */
+
+/* Return true if CANDIDATE is a prime number.  CANDIDATE should be an odd
+   number at least equal to 11.  */
+
+static bool _GL_ATTRIBUTE_CONST
+is_prime (size_t candidate)
+{
+  size_t divisor = 3;
+  size_t square = divisor * divisor;
+
+  while (square < candidate && (candidate % divisor))
+    {
+      divisor++;
+      square += 4 * divisor;
+      divisor++;
+    }
+
+  return (candidate % divisor ? true : false);
+}
+
+/* Round a given CANDIDATE number up to the nearest prime, and return that
+   prime.  Primes lower than 10 are merely skipped.  */
+
+static size_t _GL_ATTRIBUTE_CONST
+next_prime (size_t candidate)
+{
+  /* Skip small primes.  */
+  if (candidate < 10)
+    candidate = 10;
+
+  /* Make it definitely odd.  */
+  candidate |= 1;
+
+  while (SIZE_MAX != candidate && !is_prime (candidate))
+    candidate += 2;
+
+  return candidate;
+}
+
+void
+hash_reset_tuning (Hash_tuning *tuning)
+{
+  *tuning = default_tuning;
+}
+
+/* If the user passes a NULL hasher, we hash the raw pointer.  */
+static size_t
+raw_hasher (const void *data, size_t n)
+{
+  /* When hashing unique pointers, it is often the case that they were
+     generated by malloc and thus have the property that the low-order
+     bits are 0.  As this tends to give poorer performance with small
+     tables, we rotate the pointer value before performing division,
+     in an attempt to improve hash quality.  */
+  size_t val = rotr_sz ((size_t) data, 3);
+  return val % n;
+}
+
+/* If the user passes a NULL comparator, we use pointer comparison.  */
+static bool
+raw_comparator (const void *a, const void *b)
+{
+  return a == b;
+}
+
+
+/* For the given hash TABLE, check the user supplied tuning structure for
+   reasonable values, and return true if there is no gross error with it.
+   Otherwise, definitively reset the TUNING field to some acceptable default
+   in the hash table (that is, the user loses the right of further modifying
+   tuning arguments), and return false.  */
+
+static bool
+check_tuning (Hash_table *table)
+{
+  const Hash_tuning *tuning = table->tuning;
+  float epsilon;
+  if (tuning == &default_tuning)
+    return true;
+
+  /* Be a bit stricter than mathematics would require, so that
+     rounding errors in size calculations do not cause allocations to
+     fail to grow or shrink as they should.  The smallest allocation
+     is 11 (due to next_prime's algorithm), so an epsilon of 0.1
+     should be good enough.  */
+  epsilon = 0.1f;
+
+  if (epsilon < tuning->growth_threshold
+      && tuning->growth_threshold < 1 - epsilon
+      && 1 + epsilon < tuning->growth_factor
+      && 0 <= tuning->shrink_threshold
+      && tuning->shrink_threshold + epsilon < tuning->shrink_factor
+      && tuning->shrink_factor <= 1
+      && tuning->shrink_threshold + epsilon < tuning->growth_threshold)
+    return true;
+
+  table->tuning = &default_tuning;
+  return false;
+}
+
+/* Compute the size of the bucket array for the given CANDIDATE and
+   TUNING, or return 0 if there is no possible way to allocate that
+   many entries.  */
+
+static size_t _GL_ATTRIBUTE_PURE
+compute_bucket_size (size_t candidate, const Hash_tuning *tuning)
+{
+  if (!tuning->is_n_buckets)
+    {
+      float new_candidate = candidate / tuning->growth_threshold;
+      if ((float) SIZE_MAX <= new_candidate)
+        return 0;
+      candidate = new_candidate;
+    }
+  candidate = next_prime (candidate);
+  if (xalloc_oversized (candidate, sizeof (struct hash_entry *)))
+    return 0;
+  return candidate;
+}
+
+Hash_table *
+hash_initialize (size_t candidate, const Hash_tuning *tuning,
+                 Hash_hasher hasher, Hash_comparator comparator,
+                 Hash_data_freer data_freer)
+{
+  Hash_table *table;
+
+  if (hasher == NULL)
+    hasher = raw_hasher;
+  if (comparator == NULL)
+    comparator = raw_comparator;
+
+  table = malloc (sizeof *table);
+  if (table == NULL)
+    return NULL;
+
+  if (!tuning)
+    tuning = &default_tuning;
+  table->tuning = tuning;
+  if (!check_tuning (table))
+    {
+      /* Fail if the tuning options are invalid.  This is the only occasion
+         when the user gets some feedback about it.  Once the table is created,
+         if the user provides invalid tuning options, we silently revert to
+         using the defaults, and ignore further request to change the tuning
+         options.  */
+      goto fail;
+    }
+
+  table->n_buckets = compute_bucket_size (candidate, tuning);
+  if (!table->n_buckets)
+    goto fail;
+
+  table->bucket = calloc (table->n_buckets, sizeof *table->bucket);
+  if (table->bucket == NULL)
+    goto fail;
+  table->bucket_limit = table->bucket + table->n_buckets;
+  table->n_buckets_used = 0;
+  table->n_entries = 0;
+
+  table->hasher = hasher;
+  table->comparator = comparator;
+  table->data_freer = data_freer;
+
+  table->free_entry_list = NULL;
+#if USE_OBSTACK
+  obstack_init (&table->entry_stack);
+#endif
+  return table;
+
+ fail:
+  free (table);
+  return NULL;
+}
+
+void
+hash_clear (Hash_table *table)
+{
+  struct hash_entry *bucket;
+
+  for (bucket = table->bucket; bucket < table->bucket_limit; bucket++)
+    {
+      if (bucket->data)
+        {
+          struct hash_entry *cursor;
+          struct hash_entry *next;
+
+          /* Free the bucket overflow.  */
+          for (cursor = bucket->next; cursor; cursor = next)
+            {
+              if (table->data_freer)
+                table->data_freer (cursor->data);
+              cursor->data = NULL;
+
+              next = cursor->next;
+              /* Relinking is done one entry at a time, as it is to be expected
+                 that overflows are either rare or short.  */
+              cursor->next = table->free_entry_list;
+              table->free_entry_list = cursor;
+            }
+
+          /* Free the bucket head.  */
+          if (table->data_freer)
+            table->data_freer (bucket->data);
+          bucket->data = NULL;
+          bucket->next = NULL;
+        }
+    }
+
+  table->n_buckets_used = 0;
+  table->n_entries = 0;
+}
+
+void
+hash_free (Hash_table *table)
+{
+  struct hash_entry *bucket;
+  struct hash_entry *cursor;
+  struct hash_entry *next;
+
+  /* Call the user data_freer function.  */
+  if (table->data_freer && table->n_entries)
+    {
+      for (bucket = table->bucket; bucket < table->bucket_limit; bucket++)
+        {
+          if (bucket->data)
+            {
+              for (cursor = bucket; cursor; cursor = cursor->next)
+                table->data_freer (cursor->data);
+            }
+        }
+    }
+
+#if USE_OBSTACK
+
+  obstack_free (&table->entry_stack, NULL);
+
+#else
+
+  /* Free all bucket overflowed entries.  */
+  for (bucket = table->bucket; bucket < table->bucket_limit; bucket++)
+    {
+      for (cursor = bucket->next; cursor; cursor = next)
+        {
+          next = cursor->next;
+          free (cursor);
+        }
+    }
+
+  /* Also reclaim the internal list of previously freed entries.  */
+  for (cursor = table->free_entry_list; cursor; cursor = next)
+    {
+      next = cursor->next;
+      free (cursor);
+    }
+
+#endif
+
+  /* Free the remainder of the hash table structure.  */
+  free (table->bucket);
+  free (table);
+}
+
+/* Insertion and deletion.  */
+
+/* Get a new hash entry for a bucket overflow, possibly by recycling a
+   previously freed one.  If this is not possible, allocate a new one.  */
+
+static struct hash_entry *
+allocate_entry (Hash_table *table)
+{
+  struct hash_entry *new;
+
+  if (table->free_entry_list)
+    {
+      new = table->free_entry_list;
+      table->free_entry_list = new->next;
+    }
+  else
+    {
+#if USE_OBSTACK
+      new = obstack_alloc (&table->entry_stack, sizeof *new);
+#else
+      new = malloc (sizeof *new);
+#endif
+    }
+
+  return new;
+}
+
+/* Free a hash entry which was part of some bucket overflow,
+   saving it for later recycling.  */
+
+static void
+free_entry (Hash_table *table, struct hash_entry *entry)
+{
+  entry->data = NULL;
+  entry->next = table->free_entry_list;
+  table->free_entry_list = entry;
+}
+
+/* This private function is used to help with insertion and deletion.  When
+   ENTRY matches an entry in the table, return a pointer to the corresponding
+   user data and set *BUCKET_HEAD to the head of the selected bucket.
+   Otherwise, return NULL.  When DELETE is true and ENTRY matches an entry in
+   the table, unlink the matching entry.  */
+
+static void *
+hash_find_entry (Hash_table *table, const void *entry,
+                 struct hash_entry **bucket_head, bool delete)
+{
+  struct hash_entry *bucket = safe_hasher (table, entry);
+  struct hash_entry *cursor;
+
+  *bucket_head = bucket;
+
+  /* Test for empty bucket.  */
+  if (bucket->data == NULL)
+    return NULL;
+
+  /* See if the entry is the first in the bucket.  */
+  if (entry == bucket->data || table->comparator (entry, bucket->data))
+    {
+      void *data = bucket->data;
+
+      if (delete)
+        {
+          if (bucket->next)
+            {
+              struct hash_entry *next = bucket->next;
+
+              /* Bump the first overflow entry into the bucket head, then save
+                 the previous first overflow entry for later recycling.  */
+              *bucket = *next;
+              free_entry (table, next);
+            }
+          else
+            {
+              bucket->data = NULL;
+            }
+        }
+
+      return data;
+    }
+
+  /* Scan the bucket overflow.  */
+  for (cursor = bucket; cursor->next; cursor = cursor->next)
+    {
+      if (entry == cursor->next->data
+          || table->comparator (entry, cursor->next->data))
+        {
+          void *data = cursor->next->data;
+
+          if (delete)
+            {
+              struct hash_entry *next = cursor->next;
+
+              /* Unlink the entry to delete, then save the freed entry for later
+                 recycling.  */
+              cursor->next = next->next;
+              free_entry (table, next);
+            }
+
+          return data;
+        }
+    }
+
+  /* No entry found.  */
+  return NULL;
+}
+
+/* Internal helper, to move entries from SRC to DST.  Both tables must
+   share the same free entry list.  If SAFE, only move overflow
+   entries, saving bucket heads for later, so that no allocations will
+   occur.  Return false if the free entry list is exhausted and an
+   allocation fails.  */
+
+static bool
+transfer_entries (Hash_table *dst, Hash_table *src, bool safe)
+{
+  struct hash_entry *bucket;
+  struct hash_entry *cursor;
+  struct hash_entry *next;
+  for (bucket = src->bucket; bucket < src->bucket_limit; bucket++)
+    if (bucket->data)
+      {
+        void *data;
+        struct hash_entry *new_bucket;
+
+        /* Within each bucket, transfer overflow entries first and
+           then the bucket head, to minimize memory pressure.  After
+           all, the only time we might allocate is when moving the
+           bucket head, but moving overflow entries first may create
+           free entries that can be recycled by the time we finally
+           get to the bucket head.  */
+        for (cursor = bucket->next; cursor; cursor = next)
+          {
+            data = cursor->data;
+            new_bucket = safe_hasher (dst, data);
+
+            next = cursor->next;
+
+            if (new_bucket->data)
+              {
+                /* Merely relink an existing entry, when moving from a
+                   bucket overflow into a bucket overflow.  */
+                cursor->next = new_bucket->next;
+                new_bucket->next = cursor;
+              }
+            else
+              {
+                /* Free an existing entry, when moving from a bucket
+                   overflow into a bucket header.  */
+                new_bucket->data = data;
+                dst->n_buckets_used++;
+                free_entry (dst, cursor);
+              }
+          }
+        /* Now move the bucket head.  Be sure that if we fail due to
+           allocation failure that the src table is in a consistent
+           state.  */
+        data = bucket->data;
+        bucket->next = NULL;
+        if (safe)
+          continue;
+        new_bucket = safe_hasher (dst, data);
+
+        if (new_bucket->data)
+          {
+            /* Allocate or recycle an entry, when moving from a bucket
+               header into a bucket overflow.  */
+            struct hash_entry *new_entry = allocate_entry (dst);
+
+            if (new_entry == NULL)
+              return false;
+
+            new_entry->data = data;
+            new_entry->next = new_bucket->next;
+            new_bucket->next = new_entry;
+          }
+        else
+          {
+            /* Move from one bucket header to another.  */
+            new_bucket->data = data;
+            dst->n_buckets_used++;
+          }
+        bucket->data = NULL;
+        src->n_buckets_used--;
+      }
+  return true;
+}
+
+bool
+hash_rehash (Hash_table *table, size_t candidate)
+{
+  Hash_table storage;
+  Hash_table *new_table;
+  size_t new_size = compute_bucket_size (candidate, table->tuning);
+
+  if (!new_size)
+    return false;
+  if (new_size == table->n_buckets)
+    return true;
+  new_table = &storage;
+  new_table->bucket = calloc (new_size, sizeof *new_table->bucket);
+  if (new_table->bucket == NULL)
+    return false;
+  new_table->n_buckets = new_size;
+  new_table->bucket_limit = new_table->bucket + new_size;
+  new_table->n_buckets_used = 0;
+  new_table->n_entries = 0;
+  new_table->tuning = table->tuning;
+  new_table->hasher = table->hasher;
+  new_table->comparator = table->comparator;
+  new_table->data_freer = table->data_freer;
+
+  /* In order for the transfer to successfully complete, we need
+     additional overflow entries when distinct buckets in the old
+     table collide into a common bucket in the new table.  The worst
+     case possible is a hasher that gives a good spread with the old
+     size, but returns a constant with the new size; if we were to
+     guarantee table->n_buckets_used-1 free entries in advance, then
+     the transfer would be guaranteed to not allocate memory.
+     However, for large tables, a guarantee of no further allocation
+     introduces a lot of extra memory pressure, all for an unlikely
+     corner case (most rehashes reduce, rather than increase, the
+     number of overflow entries needed).  So, we instead ensure that
+     the transfer process can be reversed if we hit a memory
+     allocation failure mid-transfer.  */
+
+  /* Merely reuse the extra old space into the new table.  */
+#if USE_OBSTACK
+  new_table->entry_stack = table->entry_stack;
+#endif
+  new_table->free_entry_list = table->free_entry_list;
+
+  if (transfer_entries (new_table, table, false))
+    {
+      /* Entries transferred successfully; tie up the loose ends.  */
+      free (table->bucket);
+      table->bucket = new_table->bucket;
+      table->bucket_limit = new_table->bucket_limit;
+      table->n_buckets = new_table->n_buckets;
+      table->n_buckets_used = new_table->n_buckets_used;
+      table->free_entry_list = new_table->free_entry_list;
+      /* table->n_entries and table->entry_stack already hold their value.  */
+      return true;
+    }
+
+  /* We've allocated new_table->bucket (and possibly some entries),
+     exhausted the free list, and moved some but not all entries into
+     new_table.  We must undo the partial move before returning
+     failure.  The only way to get into this situation is if new_table
+     uses fewer buckets than the old table, so we will reclaim some
+     free entries as overflows in the new table are put back into
+     distinct buckets in the old table.
+
+     There are some pathological cases where a single pass through the
+     table requires more intermediate overflow entries than using two
+     passes.  Two passes give worse cache performance and takes
+     longer, but at this point, we're already out of memory, so slow
+     and safe is better than failure.  */
+  table->free_entry_list = new_table->free_entry_list;
+  if (! (transfer_entries (table, new_table, true)
+         && transfer_entries (table, new_table, false)))
+    abort ();
+  /* table->n_entries already holds its value.  */
+  free (new_table->bucket);
+  return false;
+}
+
+int
+hash_insert_if_absent (Hash_table *table, void const *entry,
+                       void const **matched_ent)
+{
+  void *data;
+  struct hash_entry *bucket;
+
+  /* The caller cannot insert a NULL entry, since hash_lookup returns NULL
+     to indicate "not found", and hash_find_entry uses "bucket->data == NULL"
+     to indicate an empty bucket.  */
+  if (! entry)
+    abort ();
+
+  /* If there's a matching entry already in the table, return that.  */
+  if ((data = hash_find_entry (table, entry, &bucket, false)) != NULL)
+    {
+      if (matched_ent)
+        *matched_ent = data;
+      return 0;
+    }
+
+  /* If the growth threshold of the buckets in use has been reached, increase
+     the table size and rehash.  There's no point in checking the number of
+     entries:  if the hashing function is ill-conditioned, rehashing is not
+     likely to improve it.  */
+
+  if (table->n_buckets_used
+      > table->tuning->growth_threshold * table->n_buckets)
+    {
+      /* Check more fully, before starting real work.  If tuning arguments
+         became invalid, the second check will rely on proper defaults.  */
+      check_tuning (table);
+      if (table->n_buckets_used
+          > table->tuning->growth_threshold * table->n_buckets)
+        {
+          const Hash_tuning *tuning = table->tuning;
+          float candidate =
+            (tuning->is_n_buckets
+             ? (table->n_buckets * tuning->growth_factor)
+             : (table->n_buckets * tuning->growth_factor
+                * tuning->growth_threshold));
+
+          if ((float) SIZE_MAX <= candidate)
+            return -1;
+
+          /* If the rehash fails, arrange to return NULL.  */
+          if (!hash_rehash (table, candidate))
+            return -1;
+
+          /* Update the bucket we are interested in.  */
+          if (hash_find_entry (table, entry, &bucket, false) != NULL)
+            abort ();
+        }
+    }
+
+  /* ENTRY is not matched, it should be inserted.  */
+
+  if (bucket->data)
+    {
+      struct hash_entry *new_entry = allocate_entry (table);
+
+      if (new_entry == NULL)
+        return -1;
+
+      /* Add ENTRY in the overflow of the bucket.  */
+
+      new_entry->data = (void *) entry;
+      new_entry->next = bucket->next;
+      bucket->next = new_entry;
+      table->n_entries++;
+      return 1;
+    }
+
+  /* Add ENTRY right in the bucket head.  */
+
+  bucket->data = (void *) entry;
+  table->n_entries++;
+  table->n_buckets_used++;
+
+  return 1;
+}
+
+void *
+hash_insert (Hash_table *table, void const *entry)
+{
+  void const *matched_ent;
+  int err = hash_insert_if_absent (table, entry, &matched_ent);
+  return (err == -1
+          ? NULL
+          : (void *) (err == 0 ? matched_ent : entry));
+}
+
+void *
+hash_remove (Hash_table *table, const void *entry)
+{
+  void *data;
+  struct hash_entry *bucket;
+
+  data = hash_find_entry (table, entry, &bucket, true);
+  if (!data)
+    return NULL;
+
+  table->n_entries--;
+  if (!bucket->data)
+    {
+      table->n_buckets_used--;
+
+      /* If the shrink threshold of the buckets in use has been reached,
+         rehash into a smaller table.  */
+
+      if (table->n_buckets_used
+          < table->tuning->shrink_threshold * table->n_buckets)
+        {
+          /* Check more fully, before starting real work.  If tuning arguments
+             became invalid, the second check will rely on proper defaults.  */
+          check_tuning (table);
+          if (table->n_buckets_used
+              < table->tuning->shrink_threshold * table->n_buckets)
+            {
+              const Hash_tuning *tuning = table->tuning;
+              size_t candidate =
+                (tuning->is_n_buckets
+                 ? table->n_buckets * tuning->shrink_factor
+                 : (table->n_buckets * tuning->shrink_factor
+                    * tuning->growth_threshold));
+
+              if (!hash_rehash (table, candidate))
+                {
+                  /* Failure to allocate memory in an attempt to
+                     shrink the table is not fatal.  But since memory
+                     is low, we can at least be kind and free any
+                     spare entries, rather than keeping them tied up
+                     in the free entry list.  */
+#if ! USE_OBSTACK
+                  struct hash_entry *cursor = table->free_entry_list;
+                  struct hash_entry *next;
+                  while (cursor)
+                    {
+                      next = cursor->next;
+                      free (cursor);
+                      cursor = next;
+                    }
+                  table->free_entry_list = NULL;
+#endif
+                }
+            }
+        }
+    }
+
+  return data;
+}
+
+void *
+hash_delete (Hash_table *table, const void *entry)
+{
+  return hash_remove (table, entry);
+}
+
+/* Testing.  */
+
+#if TESTING
+
+void
+hash_print (const Hash_table *table)
+{
+  struct hash_entry *bucket = (struct hash_entry *) table->bucket;
+
+  for ( ; bucket < table->bucket_limit; bucket++)
+    {
+      struct hash_entry *cursor;
+
+      if (bucket)
+        printf ("%lu:\n", (unsigned long int) (bucket - table->bucket));
+
+      for (cursor = bucket; cursor; cursor = cursor->next)
+        {
+          char const *s = cursor->data;
+          /* FIXME */
+          if (s)
+            printf ("  %s\n", s);
+        }
+    }
+}
+
+#endif /* TESTING */
diff --git a/src/grep/lib/hash.h b/src/grep/lib/hash.h
new file mode 100644
index 0000000..5877b57
--- /dev/null
+++ b/src/grep/lib/hash.h
@@ -0,0 +1,264 @@
+/* hash - hashing table processing.
+   Copyright (C) 1998-1999, 2001, 2003, 2009-2021 Free Software Foundation,
+   Inc.
+   Written by Jim Meyering <meyering@ascend.com>, 1998.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* A generic hash table package.  */
+
+/* Make sure USE_OBSTACK is defined to 1 if you want the allocator to use
+   obstacks instead of malloc, and recompile 'hash.c' with same setting.  */
+
+#ifndef HASH_H_
+# define HASH_H_
+
+# include <stdio.h>
+# include <stdbool.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+struct hash_tuning
+  {
+    /* This structure is mainly used for 'hash_initialize', see the block
+       documentation of 'hash_reset_tuning' for more complete comments.  */
+
+    float shrink_threshold;     /* ratio of used buckets to trigger a shrink */
+    float shrink_factor;        /* ratio of new smaller size to original size */
+    float growth_threshold;     /* ratio of used buckets to trigger a growth */
+    float growth_factor;        /* ratio of new bigger size to original size */
+    bool is_n_buckets;          /* if CANDIDATE really means table size */
+  };
+
+typedef struct hash_tuning Hash_tuning;
+
+struct hash_table;
+
+typedef struct hash_table Hash_table;
+
+/*
+ * Information and lookup.
+ */
+
+/* The following few functions provide information about the overall hash
+   table organization: the number of entries, number of buckets and maximum
+   length of buckets.  */
+
+/* Return the number of buckets in the hash table.  The table size, the total
+   number of buckets (used plus unused), or the maximum number of slots, are
+   the same quantity.  */
+extern size_t hash_get_n_buckets (const Hash_table *table)
+       _GL_ATTRIBUTE_PURE;
+
+/* Return the number of slots in use (non-empty buckets).  */
+extern size_t hash_get_n_buckets_used (const Hash_table *table)
+       _GL_ATTRIBUTE_PURE;
+
+/* Return the number of active entries.  */
+extern size_t hash_get_n_entries (const Hash_table *table)
+       _GL_ATTRIBUTE_PURE;
+
+/* Return the length of the longest chain (bucket).  */
+extern size_t hash_get_max_bucket_length (const Hash_table *table)
+       _GL_ATTRIBUTE_PURE;
+
+/* Do a mild validation of a hash table, by traversing it and checking two
+   statistics.  */
+extern bool hash_table_ok (const Hash_table *table)
+       _GL_ATTRIBUTE_PURE;
+
+extern void hash_print_statistics (const Hash_table *table, FILE *stream);
+
+/* If ENTRY matches an entry already in the hash table, return the
+   entry from the table.  Otherwise, return NULL.  */
+extern void *hash_lookup (const Hash_table *table, const void *entry);
+
+/*
+ * Walking.
+ */
+
+/* The functions in this page traverse the hash table and process the
+   contained entries.  For the traversal to work properly, the hash table
+   should not be resized nor modified while any particular entry is being
+   processed.  In particular, entries should not be added, and an entry
+   may be removed only if there is no shrink threshold and the entry being
+   removed has already been passed to hash_get_next.  */
+
+/* Return the first data in the table, or NULL if the table is empty.  */
+extern void *hash_get_first (const Hash_table *table)
+       _GL_ATTRIBUTE_PURE;
+
+/* Return the user data for the entry following ENTRY, where ENTRY has been
+   returned by a previous call to either 'hash_get_first' or 'hash_get_next'.
+   Return NULL if there are no more entries.  */
+extern void *hash_get_next (const Hash_table *table, const void *entry);
+
+/* Fill BUFFER with pointers to active user entries in the hash table, then
+   return the number of pointers copied.  Do not copy more than BUFFER_SIZE
+   pointers.  */
+extern size_t hash_get_entries (const Hash_table *table, void **buffer,
+                                size_t buffer_size);
+
+typedef bool (*Hash_processor) (void *entry, void *processor_data);
+
+/* Call a PROCESSOR function for each entry of a hash table, and return the
+   number of entries for which the processor function returned success.  A
+   pointer to some PROCESSOR_DATA which will be made available to each call to
+   the processor function.  The PROCESSOR accepts two arguments: the first is
+   the user entry being walked into, the second is the value of PROCESSOR_DATA
+   as received.  The walking continue for as long as the PROCESSOR function
+   returns nonzero.  When it returns zero, the walking is interrupted.  */
+extern size_t hash_do_for_each (const Hash_table *table,
+                                Hash_processor processor, void *processor_data);
+
+/*
+ * Allocation and clean-up.
+ */
+
+/* Return a hash index for a NUL-terminated STRING between 0 and N_BUCKETS-1.
+   This is a convenience routine for constructing other hashing functions.  */
+extern size_t hash_string (const char *string, size_t n_buckets)
+       _GL_ATTRIBUTE_PURE;
+
+extern void hash_reset_tuning (Hash_tuning *tuning);
+
+typedef size_t (*Hash_hasher) (const void *entry, size_t table_size);
+typedef bool (*Hash_comparator) (const void *entry1, const void *entry2);
+typedef void (*Hash_data_freer) (void *entry);
+
+/* Reclaim all storage associated with a hash table.  If a data_freer
+   function has been supplied by the user when the hash table was created,
+   this function applies it to the data of each entry before freeing that
+   entry.  */
+extern void hash_free (Hash_table *table);
+
+/* Allocate and return a new hash table, or NULL upon failure.  The initial
+   number of buckets is automatically selected so as to _guarantee_ that you
+   may insert at least CANDIDATE different user entries before any growth of
+   the hash table size occurs.  So, if have a reasonably tight a-priori upper
+   bound on the number of entries you intend to insert in the hash table, you
+   may save some table memory and insertion time, by specifying it here.  If
+   the IS_N_BUCKETS field of the TUNING structure is true, the CANDIDATE
+   argument has its meaning changed to the wanted number of buckets.
+
+   TUNING points to a structure of user-supplied values, in case some fine
+   tuning is wanted over the default behavior of the hasher.  If TUNING is
+   NULL, the default tuning parameters are used instead.  If TUNING is
+   provided but the values requested are out of bounds or might cause
+   rounding errors, return NULL.
+
+   The user-supplied HASHER function, when not NULL, accepts two
+   arguments ENTRY and TABLE_SIZE.  It computes, by hashing ENTRY contents, a
+   slot number for that entry which should be in the range 0..TABLE_SIZE-1.
+   This slot number is then returned.
+
+   The user-supplied COMPARATOR function, when not NULL, accepts two
+   arguments pointing to user data, it then returns true for a pair of entries
+   that compare equal, or false otherwise.  This function is internally called
+   on entries which are already known to hash to the same bucket index,
+   but which are distinct pointers.
+
+   The user-supplied DATA_FREER function, when not NULL, may be later called
+   with the user data as an argument, just before the entry containing the
+   data gets freed.  This happens from within 'hash_free' or 'hash_clear'.
+   You should specify this function only if you want these functions to free
+   all of your 'data' data.  This is typically the case when your data is
+   simply an auxiliary struct that you have malloc'd to aggregate several
+   values.  */
+_GL_ATTRIBUTE_NODISCARD
+extern Hash_table *hash_initialize (size_t candidate,
+                                    const Hash_tuning *tuning,
+                                    Hash_hasher hasher,
+                                    Hash_comparator comparator,
+                                    Hash_data_freer data_freer)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (hash_free, 1);
+
+/* Same as hash_initialize, but invokes xalloc_die on memory exhaustion.  */
+/* This function is defined by module 'xhash'.  */
+_GL_ATTRIBUTE_NODISCARD
+extern Hash_table *hash_xinitialize (size_t candidate,
+                                     const Hash_tuning *tuning,
+                                     Hash_hasher hasher,
+                                     Hash_comparator comparator,
+                                     Hash_data_freer data_freer)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (hash_free, 1)
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+
+/* Make all buckets empty, placing any chained entries on the free list.
+   Apply the user-specified function data_freer (if any) to the datas of any
+   affected entries.  */
+extern void hash_clear (Hash_table *table);
+
+/*
+ * Insertion and deletion.
+ */
+
+/* For an already existing hash table, change the number of buckets through
+   specifying CANDIDATE.  The contents of the hash table are preserved.  The
+   new number of buckets is automatically selected so as to _guarantee_ that
+   the table may receive at least CANDIDATE different user entries, including
+   those already in the table, before any other growth of the hash table size
+   occurs.  If TUNING->IS_N_BUCKETS is true, then CANDIDATE specifies the
+   exact number of buckets desired.  Return true iff the rehash succeeded.  */
+_GL_ATTRIBUTE_NODISCARD
+extern bool hash_rehash (Hash_table *table, size_t candidate);
+
+/* If ENTRY matches an entry already in the hash table, return the pointer
+   to the entry from the table.  Otherwise, insert ENTRY and return ENTRY.
+   Return NULL if the storage required for insertion cannot be allocated.
+   This implementation does not support duplicate entries or insertion of
+   NULL.  */
+_GL_ATTRIBUTE_NODISCARD
+extern void *hash_insert (Hash_table *table, const void *entry);
+
+/* Same as hash_insert, but invokes xalloc_die on memory exhaustion.  */
+/* This function is defined by module 'xhash'.  */
+extern void *hash_xinsert (Hash_table *table, const void *entry);
+
+/* Insert ENTRY into hash TABLE if there is not already a matching entry.
+
+   Return -1 upon memory allocation failure.
+   Return 1 if insertion succeeded.
+   Return 0 if there is already a matching entry in the table,
+   and in that case, if MATCHED_ENT is non-NULL, set *MATCHED_ENT
+   to that entry.
+
+   This interface is easier to use than hash_insert when you must
+   distinguish between the latter two cases.  More importantly,
+   hash_insert is unusable for some types of ENTRY values.  When using
+   hash_insert, the only way to distinguish those cases is to compare
+   the return value and ENTRY.  That works only when you can have two
+   different ENTRY values that point to data that compares "equal".  Thus,
+   when the ENTRY value is a simple scalar, you must use
+   hash_insert_if_absent.  ENTRY must not be NULL.  */
+extern int hash_insert_if_absent (Hash_table *table, const void *entry,
+                                  const void **matched_ent);
+
+/* If ENTRY is already in the table, remove it and return the just-deleted
+   data (the user may want to deallocate its storage).  If ENTRY is not in the
+   table, don't modify the table and return NULL.  */
+extern void *hash_remove (Hash_table *table, const void *entry);
+
+/* Same as hash_remove.  This interface is deprecated.
+   FIXME: Remove in 2022.  */
+_GL_ATTRIBUTE_DEPRECATED
+extern void *hash_delete (Hash_table *table, const void *entry);
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
diff --git a/src/grep/lib/i-ring.c b/src/grep/lib/i-ring.c
new file mode 100644
index 0000000..89c1dcc
--- /dev/null
+++ b/src/grep/lib/i-ring.c
@@ -0,0 +1,68 @@
+/* a simple ring buffer
+   Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#include <config.h>
+#include "i-ring.h"
+
+#include <stdlib.h>
+
+void
+i_ring_init (I_ring *ir, int default_val)
+{
+  int i;
+  ir->ir_empty = true;
+  ir->ir_front = 0;
+  ir->ir_back = 0;
+  for (i = 0; i < I_RING_SIZE; i++)
+    ir->ir_data[i] = default_val;
+  ir->ir_default_val = default_val;
+}
+
+bool
+i_ring_empty (I_ring const *ir)
+{
+  return ir->ir_empty;
+}
+
+int
+i_ring_push (I_ring *ir, int val)
+{
+  unsigned int dest_idx = (ir->ir_front + !ir->ir_empty) % I_RING_SIZE;
+  int old_val = ir->ir_data[dest_idx];
+  ir->ir_data[dest_idx] = val;
+  ir->ir_front = dest_idx;
+  if (dest_idx == ir->ir_back)
+    ir->ir_back = (ir->ir_back + !ir->ir_empty) % I_RING_SIZE;
+  ir->ir_empty = false;
+  return old_val;
+}
+
+int
+i_ring_pop (I_ring *ir)
+{
+  int top_val;
+  if (i_ring_empty (ir))
+    abort ();
+  top_val = ir->ir_data[ir->ir_front];
+  ir->ir_data[ir->ir_front] = ir->ir_default_val;
+  if (ir->ir_front == ir->ir_back)
+    ir->ir_empty = true;
+  else
+    ir->ir_front = ((ir->ir_front + I_RING_SIZE - 1) % I_RING_SIZE);
+  return top_val;
+}
diff --git a/src/grep/lib/i-ring.h b/src/grep/lib/i-ring.h
new file mode 100644
index 0000000..e75e846
--- /dev/null
+++ b/src/grep/lib/i-ring.h
@@ -0,0 +1,44 @@
+/* definitions for a simple ring buffer
+   Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <stdbool.h>
+#include "verify.h"
+
+enum { I_RING_SIZE = 4 };
+verify (1 <= I_RING_SIZE);
+
+/* When ir_empty is true, the ring is empty.
+   Otherwise, ir_data[B..F] are defined, where B..F is the contiguous
+   range of indices, modulo I_RING_SIZE, from back to front, inclusive.
+   Undefined elements of ir_data are always set to ir_default_val.
+   Popping from an empty ring aborts.
+   Pushing onto a full ring returns the displaced value.
+   An empty ring has F==B and ir_empty == true.
+   A ring with one entry still has F==B, but now ir_empty == false.  */
+struct I_ring
+{
+  int ir_data[I_RING_SIZE];
+  int ir_default_val;
+  unsigned int ir_front;
+  unsigned int ir_back;
+  bool ir_empty;
+};
+typedef struct I_ring I_ring;
+
+void i_ring_init (I_ring *ir, int ir_default_val);
+int i_ring_push (I_ring *ir, int val);
+int i_ring_pop (I_ring *ir);
+bool i_ring_empty (I_ring const *ir) _GL_ATTRIBUTE_PURE;
diff --git a/src/grep/lib/ialloc.c b/src/grep/lib/ialloc.c
new file mode 100644
index 0000000..f506b84
--- /dev/null
+++ b/src/grep/lib/ialloc.c
@@ -0,0 +1,21 @@
+/* malloc with idx_t rather than size_t
+
+   Copyright 2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define IALLOC_INLINE _GL_EXTERN_INLINE
+#include "ialloc.h"
diff --git a/src/grep/lib/ialloc.h b/src/grep/lib/ialloc.h
new file mode 100644
index 0000000..5ceda46
--- /dev/null
+++ b/src/grep/lib/ialloc.h
@@ -0,0 +1,100 @@
+/* ialloc.h -- malloc with idx_t rather than size_t
+
+   Copyright 2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef IALLOC_H_
+#define IALLOC_H_
+
+#include "idx.h"
+
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef IALLOC_INLINE
+# define IALLOC_INLINE _GL_INLINE
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+IALLOC_INLINE void * _GL_ATTRIBUTE_COLD
+_gl_alloc_nomem (void)
+{
+  errno = ENOMEM;
+  return NULL;
+}
+
+IALLOC_INLINE
+_GL_ATTRIBUTE_MALLOC /*_GL_ATTRIBUTE_DEALLOC_FREE*/
+void *
+imalloc (idx_t s)
+{
+  return s <= SIZE_MAX ? malloc (s) : _gl_alloc_nomem ();
+}
+
+IALLOC_INLINE
+/*_GL_ATTRIBUTE_DEALLOC_FREE*/
+void *
+irealloc (void *p, idx_t s)
+{
+  /* Work around GNU realloc glitch by treating a zero size as if it
+     were 1, so that returning NULL is equivalent to failing.  */
+  return s <= SIZE_MAX ? realloc (p, s | !s) : _gl_alloc_nomem ();
+}
+
+IALLOC_INLINE
+_GL_ATTRIBUTE_MALLOC /*_GL_ATTRIBUTE_DEALLOC_FREE*/
+void *
+icalloc (idx_t n, idx_t s)
+{
+  if (SIZE_MAX < n)
+    {
+      if (s != 0)
+        return _gl_alloc_nomem ();
+      n = 0;
+    }
+  if (SIZE_MAX < s)
+    {
+      if (n != 0)
+        return _gl_alloc_nomem ();
+      s = 0;
+    }
+  return calloc (n, s);
+}
+
+IALLOC_INLINE void *
+ireallocarray (void *p, idx_t n, idx_t s)
+{
+  /* Work around GNU reallocarray glitch by treating a zero size as if
+     it were 1, so that returning NULL is equivalent to failing.  */
+  if (n == 0 || s == 0)
+    n = s = 1;
+  return (n <= SIZE_MAX && s <= SIZE_MAX
+          ? reallocarray (p, n, s)
+          : _gl_alloc_nomem ());
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/grep/lib/iconv.c b/src/grep/lib/iconv.c
new file mode 100644
index 0000000..bf51493
--- /dev/null
+++ b/src/grep/lib/iconv.c
@@ -0,0 +1,446 @@
+/* Character set conversion.
+   Copyright (C) 1999-2001, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <iconv.h>
+
+#include <stddef.h>
+
+#if REPLACE_ICONV_UTF
+# include <errno.h>
+# include <stdint.h>
+# include <stdlib.h>
+# include "unistr.h"
+#endif
+
+#if REPLACE_ICONV_UTF
+
+/* UTF-{16,32}{BE,LE} converters taken from GNU libiconv 1.11.  */
+
+/* Return code if invalid. (xxx_mbtowc) */
+# define RET_ILSEQ      -1
+/* Return code if no bytes were read. (xxx_mbtowc) */
+# define RET_TOOFEW     -2
+
+/* Return code if invalid. (xxx_wctomb) */
+# define RET_ILUNI      -1
+/* Return code if output buffer is too small. (xxx_wctomb, xxx_reset) */
+# define RET_TOOSMALL   -2
+
+/*
+ * UTF-16BE
+ */
+
+/* Specification: RFC 2781 */
+
+static int
+utf16be_mbtowc (ucs4_t *pwc, const unsigned char *s, size_t n)
+{
+  if (n >= 2)
+    {
+      ucs4_t wc = (s[0] << 8) + s[1];
+      if (wc >= 0xd800 && wc < 0xdc00)
+        {
+          if (n >= 4)
+            {
+              ucs4_t wc2 = (s[2] << 8) + s[3];
+              if (!(wc2 >= 0xdc00 && wc2 < 0xe000))
+                return RET_ILSEQ;
+              *pwc = 0x10000 + ((wc - 0xd800) << 10) + (wc2 - 0xdc00);
+              return 4;
+            }
+        }
+      else if (wc >= 0xdc00 && wc < 0xe000)
+        {
+          return RET_ILSEQ;
+        }
+      else
+        {
+          *pwc = wc;
+          return 2;
+        }
+    }
+  return RET_TOOFEW;
+}
+
+static int
+utf16be_wctomb (unsigned char *r, ucs4_t wc, size_t n)
+{
+  if (!(wc >= 0xd800 && wc < 0xe000))
+    {
+      if (wc < 0x10000)
+        {
+          if (n >= 2)
+            {
+              r[0] = (unsigned char) (wc >> 8);
+              r[1] = (unsigned char) wc;
+              return 2;
+            }
+          else
+            return RET_TOOSMALL;
+        }
+      else if (wc < 0x110000)
+        {
+          if (n >= 4)
+            {
+              ucs4_t wc1 = 0xd800 + ((wc - 0x10000) >> 10);
+              ucs4_t wc2 = 0xdc00 + ((wc - 0x10000) & 0x3ff);
+              r[0] = (unsigned char) (wc1 >> 8);
+              r[1] = (unsigned char) wc1;
+              r[2] = (unsigned char) (wc2 >> 8);
+              r[3] = (unsigned char) wc2;
+              return 4;
+            }
+          else
+            return RET_TOOSMALL;
+        }
+    }
+  return RET_ILUNI;
+}
+
+/*
+ * UTF-16LE
+ */
+
+/* Specification: RFC 2781 */
+
+static int
+utf16le_mbtowc (ucs4_t *pwc, const unsigned char *s, size_t n)
+{
+  if (n >= 2)
+    {
+      ucs4_t wc = s[0] + (s[1] << 8);
+      if (wc >= 0xd800 && wc < 0xdc00)
+        {
+          if (n >= 4)
+            {
+              ucs4_t wc2 = s[2] + (s[3] << 8);
+              if (!(wc2 >= 0xdc00 && wc2 < 0xe000))
+                return RET_ILSEQ;
+              *pwc = 0x10000 + ((wc - 0xd800) << 10) + (wc2 - 0xdc00);
+              return 4;
+            }
+        }
+      else if (wc >= 0xdc00 && wc < 0xe000)
+        {
+          return RET_ILSEQ;
+        }
+      else
+        {
+          *pwc = wc;
+          return 2;
+        }
+    }
+  return RET_TOOFEW;
+}
+
+static int
+utf16le_wctomb (unsigned char *r, ucs4_t wc, size_t n)
+{
+  if (!(wc >= 0xd800 && wc < 0xe000))
+    {
+      if (wc < 0x10000)
+        {
+          if (n >= 2)
+            {
+              r[0] = (unsigned char) wc;
+              r[1] = (unsigned char) (wc >> 8);
+              return 2;
+            }
+          else
+            return RET_TOOSMALL;
+        }
+      else if (wc < 0x110000)
+        {
+          if (n >= 4)
+            {
+              ucs4_t wc1 = 0xd800 + ((wc - 0x10000) >> 10);
+              ucs4_t wc2 = 0xdc00 + ((wc - 0x10000) & 0x3ff);
+              r[0] = (unsigned char) wc1;
+              r[1] = (unsigned char) (wc1 >> 8);
+              r[2] = (unsigned char) wc2;
+              r[3] = (unsigned char) (wc2 >> 8);
+              return 4;
+            }
+          else
+            return RET_TOOSMALL;
+        }
+    }
+  return RET_ILUNI;
+}
+
+/*
+ * UTF-32BE
+ */
+
+/* Specification: Unicode 3.1 Standard Annex #19 */
+
+static int
+utf32be_mbtowc (ucs4_t *pwc, const unsigned char *s, size_t n)
+{
+  if (n >= 4)
+    {
+      ucs4_t wc = (s[0] << 24) + (s[1] << 16) + (s[2] << 8) + s[3];
+      if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000))
+        {
+          *pwc = wc;
+          return 4;
+        }
+      else
+        return RET_ILSEQ;
+    }
+  return RET_TOOFEW;
+}
+
+static int
+utf32be_wctomb (unsigned char *r, ucs4_t wc, size_t n)
+{
+  if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000))
+    {
+      if (n >= 4)
+        {
+          r[0] = 0;
+          r[1] = (unsigned char) (wc >> 16);
+          r[2] = (unsigned char) (wc >> 8);
+          r[3] = (unsigned char) wc;
+          return 4;
+        }
+      else
+        return RET_TOOSMALL;
+    }
+  return RET_ILUNI;
+}
+
+/*
+ * UTF-32LE
+ */
+
+/* Specification: Unicode 3.1 Standard Annex #19 */
+
+static int
+utf32le_mbtowc (ucs4_t *pwc, const unsigned char *s, size_t n)
+{
+  if (n >= 4)
+    {
+      ucs4_t wc = s[0] + (s[1] << 8) + (s[2] << 16) + (s[3] << 24);
+      if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000))
+        {
+          *pwc = wc;
+          return 4;
+        }
+      else
+        return RET_ILSEQ;
+    }
+  return RET_TOOFEW;
+}
+
+static int
+utf32le_wctomb (unsigned char *r, ucs4_t wc, size_t n)
+{
+  if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000))
+    {
+      if (n >= 4)
+        {
+          r[0] = (unsigned char) wc;
+          r[1] = (unsigned char) (wc >> 8);
+          r[2] = (unsigned char) (wc >> 16);
+          r[3] = 0;
+          return 4;
+        }
+      else
+        return RET_TOOSMALL;
+    }
+  return RET_ILUNI;
+}
+
+#endif
+
+size_t
+rpl_iconv (iconv_t cd,
+           ICONV_CONST char **inbuf, size_t *inbytesleft,
+           char **outbuf, size_t *outbytesleft)
+#undef iconv
+{
+#if REPLACE_ICONV_UTF
+  switch ((uintptr_t) cd)
+    {
+      {
+        int (*xxx_wctomb) (unsigned char *, ucs4_t, size_t);
+
+        case (uintptr_t) _ICONV_UTF8_UTF16BE:
+          xxx_wctomb = utf16be_wctomb;
+          goto loop_from_utf8;
+        case (uintptr_t) _ICONV_UTF8_UTF16LE:
+          xxx_wctomb = utf16le_wctomb;
+          goto loop_from_utf8;
+        case (uintptr_t) _ICONV_UTF8_UTF32BE:
+          xxx_wctomb = utf32be_wctomb;
+          goto loop_from_utf8;
+        case (uintptr_t) _ICONV_UTF8_UTF32LE:
+          xxx_wctomb = utf32le_wctomb;
+          goto loop_from_utf8;
+
+       loop_from_utf8:
+        if (inbuf == NULL || *inbuf == NULL)
+          return 0;
+        {
+          ICONV_CONST char *inptr = *inbuf;
+          size_t inleft = *inbytesleft;
+          char *outptr = *outbuf;
+          size_t outleft = *outbytesleft;
+          size_t res = 0;
+          while (inleft > 0)
+            {
+              ucs4_t uc;
+              int m = u8_mbtoucr (&uc, (const uint8_t *) inptr, inleft);
+              if (m <= 0)
+                {
+                  if (m == -1)
+                    {
+                      errno = EILSEQ;
+                      res = (size_t)(-1);
+                      break;
+                    }
+                  if (m == -2)
+                    {
+                      errno = EINVAL;
+                      res = (size_t)(-1);
+                      break;
+                    }
+                  abort ();
+                }
+              else
+                {
+                  int n = xxx_wctomb ((uint8_t *) outptr, uc, outleft);
+                  if (n < 0)
+                    {
+                      if (n == RET_ILUNI)
+                        {
+                          errno = EILSEQ;
+                          res = (size_t)(-1);
+                          break;
+                        }
+                      if (n == RET_TOOSMALL)
+                        {
+                          errno = E2BIG;
+                          res = (size_t)(-1);
+                          break;
+                        }
+                      abort ();
+                    }
+                  else
+                    {
+                      inptr += m;
+                      inleft -= m;
+                      outptr += n;
+                      outleft -= n;
+                    }
+                }
+            }
+          *inbuf = inptr;
+          *inbytesleft = inleft;
+          *outbuf = outptr;
+          *outbytesleft = outleft;
+          return res;
+        }
+      }
+
+      {
+        int (*xxx_mbtowc) (ucs4_t *, const unsigned char *, size_t);
+
+        case (uintptr_t) _ICONV_UTF16BE_UTF8:
+          xxx_mbtowc = utf16be_mbtowc;
+          goto loop_to_utf8;
+        case (uintptr_t) _ICONV_UTF16LE_UTF8:
+          xxx_mbtowc = utf16le_mbtowc;
+          goto loop_to_utf8;
+        case (uintptr_t) _ICONV_UTF32BE_UTF8:
+          xxx_mbtowc = utf32be_mbtowc;
+          goto loop_to_utf8;
+        case (uintptr_t) _ICONV_UTF32LE_UTF8:
+          xxx_mbtowc = utf32le_mbtowc;
+          goto loop_to_utf8;
+
+       loop_to_utf8:
+        if (inbuf == NULL || *inbuf == NULL)
+          return 0;
+        {
+          ICONV_CONST char *inptr = *inbuf;
+          size_t inleft = *inbytesleft;
+          char *outptr = *outbuf;
+          size_t outleft = *outbytesleft;
+          size_t res = 0;
+          while (inleft > 0)
+            {
+              ucs4_t uc;
+              int m = xxx_mbtowc (&uc, (const uint8_t *) inptr, inleft);
+              if (m <= 0)
+                {
+                  if (m == RET_ILSEQ)
+                    {
+                      errno = EILSEQ;
+                      res = (size_t)(-1);
+                      break;
+                    }
+                  if (m == RET_TOOFEW)
+                    {
+                      errno = EINVAL;
+                      res = (size_t)(-1);
+                      break;
+                    }
+                  abort ();
+                }
+              else
+                {
+                  int n = u8_uctomb ((uint8_t *) outptr, uc, outleft);
+                  if (n < 0)
+                    {
+                      if (n == -1)
+                        {
+                          errno = EILSEQ;
+                          res = (size_t)(-1);
+                          break;
+                        }
+                      if (n == -2)
+                        {
+                          errno = E2BIG;
+                          res = (size_t)(-1);
+                          break;
+                        }
+                      abort ();
+                    }
+                  else
+                    {
+                      inptr += m;
+                      inleft -= m;
+                      outptr += n;
+                      outleft -= n;
+                    }
+                }
+            }
+          *inbuf = inptr;
+          *inbytesleft = inleft;
+          *outbuf = outptr;
+          *outbytesleft = outleft;
+          return res;
+        }
+      }
+    }
+#endif
+  return iconv (cd, inbuf, inbytesleft, outbuf, outbytesleft);
+}
diff --git a/src/grep/lib/iconv.in.h b/src/grep/lib/iconv.in.h
new file mode 100644
index 0000000..3a2f94e
--- /dev/null
+++ b/src/grep/lib/iconv.in.h
@@ -0,0 +1,127 @@
+/* A GNU-like <iconv.h>.
+
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _@GUARD_PREFIX@_ICONV_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_ICONV_H@
+
+#ifndef _@GUARD_PREFIX@_ICONV_H
+#define _@GUARD_PREFIX@_ICONV_H
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
+#if @GNULIB_ICONV@
+# if @REPLACE_ICONV_OPEN@
+/* An iconv_open wrapper that supports the IANA standardized encoding names
+   ("ISO-8859-1" etc.) as far as possible.  */
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define iconv_open rpl_iconv_open
+#  endif
+_GL_FUNCDECL_RPL (iconv_open, iconv_t,
+                  (const char *tocode, const char *fromcode)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (iconv_open, iconv_t,
+                  (const char *tocode, const char *fromcode));
+# else
+_GL_CXXALIAS_SYS (iconv_open, iconv_t,
+                  (const char *tocode, const char *fromcode));
+# endif
+_GL_CXXALIASWARN (iconv_open);
+#elif defined GNULIB_POSIXCHECK
+# undef iconv_open
+# if HAVE_RAW_DECL_ICONV_OPEN
+_GL_WARN_ON_USE (iconv_open, "iconv_open is not working correctly everywhere - "
+                 "use gnulib module iconv for portability");
+# endif
+#endif
+
+#if @REPLACE_ICONV_UTF@
+/* Special constants for supporting UTF-{16,32}{BE,LE} encodings.
+   Not public.  */
+# define _ICONV_UTF8_UTF16BE (iconv_t)(-161)
+# define _ICONV_UTF8_UTF16LE (iconv_t)(-162)
+# define _ICONV_UTF8_UTF32BE (iconv_t)(-163)
+# define _ICONV_UTF8_UTF32LE (iconv_t)(-164)
+# define _ICONV_UTF16BE_UTF8 (iconv_t)(-165)
+# define _ICONV_UTF16LE_UTF8 (iconv_t)(-166)
+# define _ICONV_UTF32BE_UTF8 (iconv_t)(-167)
+# define _ICONV_UTF32LE_UTF8 (iconv_t)(-168)
+#endif
+
+#if @GNULIB_ICONV@
+# if @REPLACE_ICONV@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define iconv rpl_iconv
+#  endif
+_GL_FUNCDECL_RPL (iconv, size_t,
+                  (iconv_t cd,
+                   @ICONV_CONST@ char **restrict inbuf,
+                   size_t *restrict inbytesleft,
+                   char **restrict outbuf, size_t *restrict outbytesleft));
+_GL_CXXALIAS_RPL (iconv, size_t,
+                  (iconv_t cd,
+                   @ICONV_CONST@ char **restrict inbuf,
+                   size_t *restrict inbytesleft,
+                   char **restrict outbuf, size_t *restrict outbytesleft));
+# else
+/* Need to cast, because on some versions of Solaris, ICONV_CONST does
+   not have the right value for C++.  */
+_GL_CXXALIAS_SYS_CAST (iconv, size_t,
+                       (iconv_t cd,
+                        @ICONV_CONST@ char **restrict inbuf,
+                        size_t *restrict inbytesleft,
+                        char **restrict outbuf, size_t *restrict outbytesleft));
+# endif
+_GL_CXXALIASWARN (iconv);
+# ifndef ICONV_CONST
+#  define ICONV_CONST @ICONV_CONST@
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef iconv
+# if HAVE_RAW_DECL_ICONV
+_GL_WARN_ON_USE (iconv, "iconv is not working correctly everywhere - "
+                 "use gnulib module iconv for portability");
+# endif
+#endif
+
+#if @GNULIB_ICONV@
+# if @REPLACE_ICONV@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define iconv_close rpl_iconv_close
+#  endif
+_GL_FUNCDECL_RPL (iconv_close, int, (iconv_t cd));
+_GL_CXXALIAS_RPL (iconv_close, int, (iconv_t cd));
+# else
+_GL_CXXALIAS_SYS (iconv_close, int, (iconv_t cd));
+# endif
+_GL_CXXALIASWARN (iconv_close);
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_ICONV_H */
+#endif /* _@GUARD_PREFIX@_ICONV_H */
diff --git a/src/grep/lib/iconv_close.c b/src/grep/lib/iconv_close.c
new file mode 100644
index 0000000..7429b92
--- /dev/null
+++ b/src/grep/lib/iconv_close.c
@@ -0,0 +1,43 @@
+/* Character set conversion.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <iconv.h>
+
+#include <stdint.h>
+
+int
+rpl_iconv_close (iconv_t cd)
+#undef iconv_close
+{
+#if REPLACE_ICONV_UTF
+  switch ((uintptr_t) cd)
+    {
+    case (uintptr_t) _ICONV_UTF8_UTF16BE:
+    case (uintptr_t) _ICONV_UTF8_UTF16LE:
+    case (uintptr_t) _ICONV_UTF8_UTF32BE:
+    case (uintptr_t) _ICONV_UTF8_UTF32LE:
+    case (uintptr_t) _ICONV_UTF16BE_UTF8:
+    case (uintptr_t) _ICONV_UTF16LE_UTF8:
+    case (uintptr_t) _ICONV_UTF32BE_UTF8:
+    case (uintptr_t) _ICONV_UTF32LE_UTF8:
+      return 0;
+    }
+#endif
+  return iconv_close (cd);
+}
diff --git a/src/grep/lib/iconv_open-aix.gperf b/src/grep/lib/iconv_open-aix.gperf
new file mode 100644
index 0000000..d073759
--- /dev/null
+++ b/src/grep/lib/iconv_open-aix.gperf
@@ -0,0 +1,60 @@
+/* Character set conversion.
+   Copyright (C) 2007, 2020-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+struct mapping { int standard_name; const char vendor_name[10 + 1]; };
+%struct-type
+%language=ANSI-C
+%define slot-name standard_name
+%define hash-function-name mapping_hash
+%define lookup-function-name mapping_lookup
+%readonly-tables
+%global-table
+%define word-array-name mappings
+%pic
+%%
+# On AIX 5.1, look in /usr/lib/nls/loc/uconvTable.
+ISO-8859-1, "ISO8859-1"
+ISO-8859-2, "ISO8859-2"
+ISO-8859-3, "ISO8859-3"
+ISO-8859-4, "ISO8859-4"
+ISO-8859-5, "ISO8859-5"
+ISO-8859-6, "ISO8859-6"
+ISO-8859-7, "ISO8859-7"
+ISO-8859-8, "ISO8859-8"
+ISO-8859-9, "ISO8859-9"
+ISO-8859-15, "ISO8859-15"
+CP437, "IBM-437"
+CP850, "IBM-850"
+CP852, "IBM-852"
+CP856, "IBM-856"
+CP857, "IBM-857"
+CP861, "IBM-861"
+CP865, "IBM-865"
+CP869, "IBM-869"
+ISO-8859-13, "IBM-921"
+CP922, "IBM-922"
+CP932, "IBM-932"
+CP943, "IBM-943"
+CP1046, "IBM-1046"
+CP1124, "IBM-1124"
+CP1125, "IBM-1125"
+CP1129, "IBM-1129"
+CP1252, "IBM-1252"
+GB2312, "IBM-eucCN"
+EUC-JP, "IBM-eucJP"
+EUC-KR, "IBM-eucKR"
+EUC-TW, "IBM-eucTW"
+BIG5, "big5"
diff --git a/src/grep/lib/iconv_open-aix.h b/src/grep/lib/iconv_open-aix.h
new file mode 100644
index 0000000..85ed767
--- /dev/null
+++ b/src/grep/lib/iconv_open-aix.h
@@ -0,0 +1,250 @@
+/* ANSI-C code produced by gperf version 3.1 */
+/* Command-line: gperf -m 10 ./iconv_open-aix.gperf  */
+/* Computed positions: -k'4,$' */
+
+#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
+      && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
+      && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
+      && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
+      && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
+      && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
+      && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
+      && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
+      && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
+      && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
+      && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
+      && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
+      && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
+      && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
+      && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
+      && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
+      && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
+      && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
+      && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
+      && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
+      && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
+      && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
+      && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
+/* The character set is not based on ISO-646.  */
+#error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gperf@gnu.org>."
+#endif
+
+#line 17 "./iconv_open-aix.gperf"
+struct mapping { int standard_name; const char vendor_name[10 + 1]; };
+
+#define TOTAL_KEYWORDS 32
+#define MIN_WORD_LENGTH 4
+#define MAX_WORD_LENGTH 11
+#define MIN_HASH_VALUE 6
+#define MAX_HASH_VALUE 44
+/* maximum key range = 39, duplicates = 0 */
+
+#ifdef __GNUC__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static unsigned int
+mapping_hash (register const char *str, register size_t len)
+{
+  static const unsigned char asso_values[] =
+    {
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45,  0,  4, 25,
+       0, 11, 24,  9, 17,  3, 14, 21, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+       3, 45,  1, 45, 45, 45, 45,  0, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
+      45, 45, 45, 45, 45, 45, 45, 45
+    };
+  return len + asso_values[(unsigned char)str[3]+2] + asso_values[(unsigned char)str[len - 1]];
+}
+
+struct stringpool_t
+  {
+    char stringpool_str6[sizeof("EUC-TW")];
+    char stringpool_str7[sizeof("EUC-KR")];
+    char stringpool_str8[sizeof("CP852")];
+    char stringpool_str9[sizeof("EUC-JP")];
+    char stringpool_str10[sizeof("ISO-8859-2")];
+    char stringpool_str11[sizeof("CP857")];
+    char stringpool_str12[sizeof("CP850")];
+    char stringpool_str13[sizeof("ISO-8859-7")];
+    char stringpool_str14[sizeof("CP932")];
+    char stringpool_str15[sizeof("GB2312")];
+    char stringpool_str16[sizeof("BIG5")];
+    char stringpool_str17[sizeof("CP437")];
+    char stringpool_str19[sizeof("ISO-8859-5")];
+    char stringpool_str20[sizeof("ISO-8859-15")];
+    char stringpool_str21[sizeof("ISO-8859-3")];
+    char stringpool_str22[sizeof("ISO-8859-13")];
+    char stringpool_str23[sizeof("CP1046")];
+    char stringpool_str24[sizeof("ISO-8859-8")];
+    char stringpool_str25[sizeof("CP856")];
+    char stringpool_str26[sizeof("CP1125")];
+    char stringpool_str27[sizeof("ISO-8859-6")];
+    char stringpool_str28[sizeof("CP865")];
+    char stringpool_str29[sizeof("CP922")];
+    char stringpool_str30[sizeof("CP1252")];
+    char stringpool_str31[sizeof("ISO-8859-9")];
+    char stringpool_str33[sizeof("CP943")];
+    char stringpool_str34[sizeof("ISO-8859-4")];
+    char stringpool_str35[sizeof("ISO-8859-1")];
+    char stringpool_str38[sizeof("CP1129")];
+    char stringpool_str40[sizeof("CP869")];
+    char stringpool_str41[sizeof("CP1124")];
+    char stringpool_str44[sizeof("CP861")];
+  };
+static const struct stringpool_t stringpool_contents =
+  {
+    "EUC-TW",
+    "EUC-KR",
+    "CP852",
+    "EUC-JP",
+    "ISO-8859-2",
+    "CP857",
+    "CP850",
+    "ISO-8859-7",
+    "CP932",
+    "GB2312",
+    "BIG5",
+    "CP437",
+    "ISO-8859-5",
+    "ISO-8859-15",
+    "ISO-8859-3",
+    "ISO-8859-13",
+    "CP1046",
+    "ISO-8859-8",
+    "CP856",
+    "CP1125",
+    "ISO-8859-6",
+    "CP865",
+    "CP922",
+    "CP1252",
+    "ISO-8859-9",
+    "CP943",
+    "ISO-8859-4",
+    "ISO-8859-1",
+    "CP1129",
+    "CP869",
+    "CP1124",
+    "CP861"
+  };
+#define stringpool ((const char *) &stringpool_contents)
+
+static const struct mapping mappings[] =
+  {
+    {-1}, {-1}, {-1}, {-1}, {-1}, {-1},
+#line 59 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str6, "IBM-eucTW"},
+#line 58 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str7, "IBM-eucKR"},
+#line 41 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str8, "IBM-852"},
+#line 57 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str9, "IBM-eucJP"},
+#line 30 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str10, "ISO8859-2"},
+#line 43 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str11, "IBM-857"},
+#line 40 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str12, "IBM-850"},
+#line 35 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str13, "ISO8859-7"},
+#line 49 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str14, "IBM-932"},
+#line 56 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str15, "IBM-eucCN"},
+#line 60 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str16, "big5"},
+#line 39 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str17, "IBM-437"},
+    {-1},
+#line 33 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str19, "ISO8859-5"},
+#line 38 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str20, "ISO8859-15"},
+#line 31 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str21, "ISO8859-3"},
+#line 47 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str22, "IBM-921"},
+#line 51 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str23, "IBM-1046"},
+#line 36 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str24, "ISO8859-8"},
+#line 42 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str25, "IBM-856"},
+#line 53 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str26, "IBM-1125"},
+#line 34 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str27, "ISO8859-6"},
+#line 45 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str28, "IBM-865"},
+#line 48 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str29, "IBM-922"},
+#line 55 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str30, "IBM-1252"},
+#line 37 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str31, "ISO8859-9"},
+    {-1},
+#line 50 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str33, "IBM-943"},
+#line 32 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str34, "ISO8859-4"},
+#line 29 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str35, "ISO8859-1"},
+    {-1}, {-1},
+#line 54 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str38, "IBM-1129"},
+    {-1},
+#line 46 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str40, "IBM-869"},
+#line 52 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str41, "IBM-1124"},
+    {-1}, {-1},
+#line 44 "./iconv_open-aix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str44, "IBM-861"}
+  };
+
+const struct mapping *
+mapping_lookup (register const char *str, register size_t len)
+{
+  if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
+    {
+      register unsigned int key = mapping_hash (str, len);
+
+      if (key <= MAX_HASH_VALUE)
+        {
+          register int o = mappings[key].standard_name;
+          if (o >= 0)
+            {
+              register const char *s = o + stringpool;
+
+              if (*str == *s && !strcmp (str + 1, s + 1))
+                return &mappings[key];
+            }
+        }
+    }
+  return 0;
+}
diff --git a/src/grep/lib/iconv_open-hpux.gperf b/src/grep/lib/iconv_open-hpux.gperf
new file mode 100644
index 0000000..f4664d6
--- /dev/null
+++ b/src/grep/lib/iconv_open-hpux.gperf
@@ -0,0 +1,72 @@
+/* Character set conversion.
+   Copyright (C) 2007, 2020-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+struct mapping { int standard_name; const char vendor_name[9 + 1]; };
+%struct-type
+%language=ANSI-C
+%define slot-name standard_name
+%define hash-function-name mapping_hash
+%define lookup-function-name mapping_lookup
+%readonly-tables
+%global-table
+%define word-array-name mappings
+%pic
+%%
+# On HP-UX 11.11, look in /usr/lib/nls/iconv.
+ISO-8859-1, "iso88591"
+ISO-8859-2, "iso88592"
+ISO-8859-5, "iso88595"
+ISO-8859-6, "iso88596"
+ISO-8859-7, "iso88597"
+ISO-8859-8, "iso88598"
+ISO-8859-9, "iso88599"
+ISO-8859-15, "iso885915"
+CP437, "cp437"
+CP775, "cp775"
+CP850, "cp850"
+CP852, "cp852"
+CP855, "cp855"
+CP857, "cp857"
+CP861, "cp861"
+CP862, "cp862"
+CP864, "cp864"
+CP865, "cp865"
+CP866, "cp866"
+CP869, "cp869"
+CP874, "cp874"
+CP1250, "cp1250"
+CP1251, "cp1251"
+CP1252, "cp1252"
+CP1253, "cp1253"
+CP1254, "cp1254"
+CP1255, "cp1255"
+CP1256, "cp1256"
+CP1257, "cp1257"
+CP1258, "cp1258"
+HP-ROMAN8, "roman8"
+HP-ARABIC8, "arabic8"
+HP-GREEK8, "greek8"
+HP-HEBREW8, "hebrew8"
+HP-TURKISH8, "turkish8"
+HP-KANA8, "kana8"
+TIS-620, "tis620"
+GB2312, "hp15CN"
+EUC-JP, "eucJP"
+EUC-KR, "eucKR"
+EUC-TW, "eucTW"
+BIG5, "big5"
+SHIFT_JIS, "sjis"
+UTF-8, "utf8"
diff --git a/src/grep/lib/iconv_open-hpux.h b/src/grep/lib/iconv_open-hpux.h
new file mode 100644
index 0000000..fe3c289
--- /dev/null
+++ b/src/grep/lib/iconv_open-hpux.h
@@ -0,0 +1,293 @@
+/* ANSI-C code produced by gperf version 3.1 */
+/* Command-line: gperf -m 10 ./iconv_open-hpux.gperf  */
+/* Computed positions: -k'4,$' */
+
+#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
+      && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
+      && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
+      && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
+      && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
+      && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
+      && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
+      && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
+      && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
+      && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
+      && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
+      && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
+      && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
+      && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
+      && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
+      && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
+      && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
+      && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
+      && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
+      && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
+      && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
+      && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
+      && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
+/* The character set is not based on ISO-646.  */
+#error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gperf@gnu.org>."
+#endif
+
+#line 17 "./iconv_open-hpux.gperf"
+struct mapping { int standard_name; const char vendor_name[9 + 1]; };
+
+#define TOTAL_KEYWORDS 44
+#define MIN_WORD_LENGTH 4
+#define MAX_WORD_LENGTH 11
+#define MIN_HASH_VALUE 6
+#define MAX_HASH_VALUE 49
+/* maximum key range = 44, duplicates = 0 */
+
+#ifdef __GNUC__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static unsigned int
+mapping_hash (register const char *str, register size_t len)
+{
+  static const unsigned char asso_values[] =
+    {
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50,  1,  2,
+      24, 43,  5, 10,  0, 13, 32,  3, 19, 18,
+      50, 50, 50, 50, 50, 50, 50, 50, 50,  5,
+      50, 50, 50, 50, 14,  5,  0, 50, 50,  0,
+      27, 50, 12, 14, 50, 50,  0,  5,  2, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
+      50, 50, 50, 50, 50, 50, 50, 50, 50, 50
+    };
+  return len + asso_values[(unsigned char)str[3]+4] + asso_values[(unsigned char)str[len - 1]];
+}
+
+struct stringpool_t
+  {
+    char stringpool_str6[sizeof("CP1256")];
+    char stringpool_str7[sizeof("CP1250")];
+    char stringpool_str8[sizeof("CP1251")];
+    char stringpool_str9[sizeof("CP850")];
+    char stringpool_str10[sizeof("TIS-620")];
+    char stringpool_str11[sizeof("CP1254")];
+    char stringpool_str12[sizeof("ISO-8859-6")];
+    char stringpool_str13[sizeof("EUC-TW")];
+    char stringpool_str14[sizeof("ISO-8859-1")];
+    char stringpool_str15[sizeof("ISO-8859-9")];
+    char stringpool_str16[sizeof("CP1255")];
+    char stringpool_str17[sizeof("BIG5")];
+    char stringpool_str18[sizeof("CP855")];
+    char stringpool_str19[sizeof("CP1257")];
+    char stringpool_str20[sizeof("EUC-KR")];
+    char stringpool_str21[sizeof("CP857")];
+    char stringpool_str22[sizeof("ISO-8859-5")];
+    char stringpool_str23[sizeof("ISO-8859-15")];
+    char stringpool_str24[sizeof("CP866")];
+    char stringpool_str25[sizeof("ISO-8859-7")];
+    char stringpool_str26[sizeof("CP861")];
+    char stringpool_str27[sizeof("CP869")];
+    char stringpool_str28[sizeof("CP874")];
+    char stringpool_str29[sizeof("CP864")];
+    char stringpool_str30[sizeof("CP1252")];
+    char stringpool_str31[sizeof("CP437")];
+    char stringpool_str32[sizeof("CP852")];
+    char stringpool_str33[sizeof("CP775")];
+    char stringpool_str34[sizeof("CP865")];
+    char stringpool_str35[sizeof("EUC-JP")];
+    char stringpool_str36[sizeof("ISO-8859-2")];
+    char stringpool_str37[sizeof("SHIFT_JIS")];
+    char stringpool_str38[sizeof("CP1258")];
+    char stringpool_str39[sizeof("UTF-8")];
+    char stringpool_str40[sizeof("HP-KANA8")];
+    char stringpool_str41[sizeof("HP-ROMAN8")];
+    char stringpool_str42[sizeof("HP-HEBREW8")];
+    char stringpool_str43[sizeof("GB2312")];
+    char stringpool_str44[sizeof("ISO-8859-8")];
+    char stringpool_str45[sizeof("HP-TURKISH8")];
+    char stringpool_str46[sizeof("HP-GREEK8")];
+    char stringpool_str47[sizeof("HP-ARABIC8")];
+    char stringpool_str48[sizeof("CP862")];
+    char stringpool_str49[sizeof("CP1253")];
+  };
+static const struct stringpool_t stringpool_contents =
+  {
+    "CP1256",
+    "CP1250",
+    "CP1251",
+    "CP850",
+    "TIS-620",
+    "CP1254",
+    "ISO-8859-6",
+    "EUC-TW",
+    "ISO-8859-1",
+    "ISO-8859-9",
+    "CP1255",
+    "BIG5",
+    "CP855",
+    "CP1257",
+    "EUC-KR",
+    "CP857",
+    "ISO-8859-5",
+    "ISO-8859-15",
+    "CP866",
+    "ISO-8859-7",
+    "CP861",
+    "CP869",
+    "CP874",
+    "CP864",
+    "CP1252",
+    "CP437",
+    "CP852",
+    "CP775",
+    "CP865",
+    "EUC-JP",
+    "ISO-8859-2",
+    "SHIFT_JIS",
+    "CP1258",
+    "UTF-8",
+    "HP-KANA8",
+    "HP-ROMAN8",
+    "HP-HEBREW8",
+    "GB2312",
+    "ISO-8859-8",
+    "HP-TURKISH8",
+    "HP-GREEK8",
+    "HP-ARABIC8",
+    "CP862",
+    "CP1253"
+  };
+#define stringpool ((const char *) &stringpool_contents)
+
+static const struct mapping mappings[] =
+  {
+    {-1}, {-1}, {-1}, {-1}, {-1}, {-1},
+#line 56 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str6, "cp1256"},
+#line 50 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str7, "cp1250"},
+#line 51 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str8, "cp1251"},
+#line 39 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str9, "cp850"},
+#line 65 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str10, "tis620"},
+#line 54 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str11, "cp1254"},
+#line 32 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str12, "iso88596"},
+#line 69 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str13, "eucTW"},
+#line 29 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str14, "iso88591"},
+#line 35 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str15, "iso88599"},
+#line 55 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str16, "cp1255"},
+#line 70 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str17, "big5"},
+#line 41 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str18, "cp855"},
+#line 57 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str19, "cp1257"},
+#line 68 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str20, "eucKR"},
+#line 42 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str21, "cp857"},
+#line 31 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str22, "iso88595"},
+#line 36 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str23, "iso885915"},
+#line 47 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str24, "cp866"},
+#line 33 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str25, "iso88597"},
+#line 43 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str26, "cp861"},
+#line 48 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str27, "cp869"},
+#line 49 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str28, "cp874"},
+#line 45 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str29, "cp864"},
+#line 52 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str30, "cp1252"},
+#line 37 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str31, "cp437"},
+#line 40 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str32, "cp852"},
+#line 38 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str33, "cp775"},
+#line 46 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str34, "cp865"},
+#line 67 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str35, "eucJP"},
+#line 30 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str36, "iso88592"},
+#line 71 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str37, "sjis"},
+#line 58 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str38, "cp1258"},
+#line 72 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str39, "utf8"},
+#line 64 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str40, "kana8"},
+#line 59 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str41, "roman8"},
+#line 62 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str42, "hebrew8"},
+#line 66 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str43, "hp15CN"},
+#line 34 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str44, "iso88598"},
+#line 63 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str45, "turkish8"},
+#line 61 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str46, "greek8"},
+#line 60 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str47, "arabic8"},
+#line 44 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str48, "cp862"},
+#line 53 "./iconv_open-hpux.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str49, "cp1253"}
+  };
+
+const struct mapping *
+mapping_lookup (register const char *str, register size_t len)
+{
+  if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
+    {
+      register unsigned int key = mapping_hash (str, len);
+
+      if (key <= MAX_HASH_VALUE)
+        {
+          register int o = mappings[key].standard_name;
+          if (o >= 0)
+            {
+              register const char *s = o + stringpool;
+
+              if (*str == *s && !strcmp (str + 1, s + 1))
+                return &mappings[key];
+            }
+        }
+    }
+  return 0;
+}
diff --git a/src/grep/lib/iconv_open-irix.gperf b/src/grep/lib/iconv_open-irix.gperf
new file mode 100644
index 0000000..9885d92
--- /dev/null
+++ b/src/grep/lib/iconv_open-irix.gperf
@@ -0,0 +1,47 @@
+/* Character set conversion.
+   Copyright (C) 2007, 2020-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+struct mapping { int standard_name; const char vendor_name[10 + 1]; };
+%struct-type
+%language=ANSI-C
+%define slot-name standard_name
+%define hash-function-name mapping_hash
+%define lookup-function-name mapping_lookup
+%readonly-tables
+%global-table
+%define word-array-name mappings
+%pic
+%%
+# On IRIX 6.5, look in /usr/lib/iconv and /usr/lib/international/encodings.
+ISO-8859-1, "ISO8859-1"
+ISO-8859-2, "ISO8859-2"
+ISO-8859-3, "ISO8859-3"
+ISO-8859-4, "ISO8859-4"
+ISO-8859-5, "ISO8859-5"
+ISO-8859-6, "ISO8859-6"
+ISO-8859-7, "ISO8859-7"
+ISO-8859-8, "ISO8859-8"
+ISO-8859-9, "ISO8859-9"
+ISO-8859-15, "ISO8859-15"
+KOI8-R, "KOI8"
+CP855, "DOS855"
+CP1251, "WIN1251"
+GB2312, "eucCN"
+EUC-JP, "eucJP"
+EUC-KR, "eucKR"
+EUC-TW, "eucTW"
+SHIFT_JIS, "sjis"
+TIS-620, "TIS620"
diff --git a/src/grep/lib/iconv_open-irix.h b/src/grep/lib/iconv_open-irix.h
new file mode 100644
index 0000000..9eec045
--- /dev/null
+++ b/src/grep/lib/iconv_open-irix.h
@@ -0,0 +1,193 @@
+/* ANSI-C code produced by gperf version 3.1 */
+/* Command-line: gperf -m 10 ./iconv_open-irix.gperf  */
+/* Computed positions: -k'1,$' */
+
+#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
+      && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
+      && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
+      && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
+      && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
+      && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
+      && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
+      && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
+      && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
+      && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
+      && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
+      && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
+      && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
+      && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
+      && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
+      && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
+      && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
+      && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
+      && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
+      && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
+      && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
+      && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
+      && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
+/* The character set is not based on ISO-646.  */
+#error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gperf@gnu.org>."
+#endif
+
+#line 17 "./iconv_open-irix.gperf"
+struct mapping { int standard_name; const char vendor_name[10 + 1]; };
+
+#define TOTAL_KEYWORDS 19
+#define MIN_WORD_LENGTH 5
+#define MAX_WORD_LENGTH 11
+#define MIN_HASH_VALUE 5
+#define MAX_HASH_VALUE 23
+/* maximum key range = 19, duplicates = 0 */
+
+#ifdef __GNUC__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static unsigned int
+mapping_hash (register const char *str, register size_t len)
+{
+  static const unsigned char asso_values[] =
+    {
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24,  8,  2,
+       5, 12, 11,  0, 10,  9,  8,  7, 24, 24,
+      24, 24, 24, 24, 24, 24, 24,  0, 24,  0,
+      24,  5, 24,  0, 24,  7, 24, 24, 24, 24,
+       7, 24,  1,  0,  8, 24, 24,  0, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+      24, 24, 24, 24, 24, 24
+    };
+  return len + asso_values[(unsigned char)str[len - 1]] + asso_values[(unsigned char)str[0]];
+}
+
+struct stringpool_t
+  {
+    char stringpool_str5[sizeof("CP855")];
+    char stringpool_str6[sizeof("EUC-TW")];
+    char stringpool_str7[sizeof("EUC-KR")];
+    char stringpool_str8[sizeof("CP1251")];
+    char stringpool_str9[sizeof("SHIFT_JIS")];
+    char stringpool_str10[sizeof("ISO-8859-5")];
+    char stringpool_str11[sizeof("ISO-8859-15")];
+    char stringpool_str12[sizeof("ISO-8859-1")];
+    char stringpool_str13[sizeof("EUC-JP")];
+    char stringpool_str14[sizeof("KOI8-R")];
+    char stringpool_str15[sizeof("ISO-8859-2")];
+    char stringpool_str16[sizeof("GB2312")];
+    char stringpool_str17[sizeof("ISO-8859-9")];
+    char stringpool_str18[sizeof("ISO-8859-8")];
+    char stringpool_str19[sizeof("ISO-8859-7")];
+    char stringpool_str20[sizeof("ISO-8859-6")];
+    char stringpool_str21[sizeof("ISO-8859-4")];
+    char stringpool_str22[sizeof("ISO-8859-3")];
+    char stringpool_str23[sizeof("TIS-620")];
+  };
+static const struct stringpool_t stringpool_contents =
+  {
+    "CP855",
+    "EUC-TW",
+    "EUC-KR",
+    "CP1251",
+    "SHIFT_JIS",
+    "ISO-8859-5",
+    "ISO-8859-15",
+    "ISO-8859-1",
+    "EUC-JP",
+    "KOI8-R",
+    "ISO-8859-2",
+    "GB2312",
+    "ISO-8859-9",
+    "ISO-8859-8",
+    "ISO-8859-7",
+    "ISO-8859-6",
+    "ISO-8859-4",
+    "ISO-8859-3",
+    "TIS-620"
+  };
+#define stringpool ((const char *) &stringpool_contents)
+
+static const struct mapping mappings[] =
+  {
+    {-1}, {-1}, {-1}, {-1}, {-1},
+#line 40 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str5, "DOS855"},
+#line 45 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str6, "eucTW"},
+#line 44 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str7, "eucKR"},
+#line 41 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str8, "WIN1251"},
+#line 46 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str9, "sjis"},
+#line 33 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str10, "ISO8859-5"},
+#line 38 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str11, "ISO8859-15"},
+#line 29 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str12, "ISO8859-1"},
+#line 43 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str13, "eucJP"},
+#line 39 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str14, "KOI8"},
+#line 30 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str15, "ISO8859-2"},
+#line 42 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str16, "eucCN"},
+#line 37 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str17, "ISO8859-9"},
+#line 36 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str18, "ISO8859-8"},
+#line 35 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str19, "ISO8859-7"},
+#line 34 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str20, "ISO8859-6"},
+#line 32 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str21, "ISO8859-4"},
+#line 31 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str22, "ISO8859-3"},
+#line 47 "./iconv_open-irix.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str23, "TIS620"}
+  };
+
+const struct mapping *
+mapping_lookup (register const char *str, register size_t len)
+{
+  if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
+    {
+      register unsigned int key = mapping_hash (str, len);
+
+      if (key <= MAX_HASH_VALUE)
+        {
+          register int o = mappings[key].standard_name;
+          if (o >= 0)
+            {
+              register const char *s = o + stringpool;
+
+              if (*str == *s && !strcmp (str + 1, s + 1))
+                return &mappings[key];
+            }
+        }
+    }
+  return 0;
+}
diff --git a/src/grep/lib/iconv_open-osf.gperf b/src/grep/lib/iconv_open-osf.gperf
new file mode 100644
index 0000000..d818d79
--- /dev/null
+++ b/src/grep/lib/iconv_open-osf.gperf
@@ -0,0 +1,66 @@
+/* Character set conversion.
+   Copyright (C) 2007, 2020-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+struct mapping { int standard_name; const char vendor_name[10 + 1]; };
+%struct-type
+%language=ANSI-C
+%define slot-name standard_name
+%define hash-function-name mapping_hash
+%define lookup-function-name mapping_lookup
+%readonly-tables
+%global-table
+%define word-array-name mappings
+%pic
+%%
+# On OSF/1 5.1, look in /usr/lib/nls/loc/iconv.
+ISO-8859-1, "ISO8859-1"
+ISO-8859-2, "ISO8859-2"
+ISO-8859-3, "ISO8859-3"
+ISO-8859-4, "ISO8859-4"
+ISO-8859-5, "ISO8859-5"
+ISO-8859-6, "ISO8859-6"
+ISO-8859-7, "ISO8859-7"
+ISO-8859-8, "ISO8859-8"
+ISO-8859-9, "ISO8859-9"
+ISO-8859-15, "ISO8859-15"
+CP437, "cp437"
+CP775, "cp775"
+CP850, "cp850"
+CP852, "cp852"
+CP855, "cp855"
+CP857, "cp857"
+CP861, "cp861"
+CP862, "cp862"
+CP865, "cp865"
+CP866, "cp866"
+CP869, "cp869"
+CP874, "cp874"
+CP949, "KSC5601"
+CP1250, "cp1250"
+CP1251, "cp1251"
+CP1252, "cp1252"
+CP1253, "cp1253"
+CP1254, "cp1254"
+CP1255, "cp1255"
+CP1256, "cp1256"
+CP1257, "cp1257"
+CP1258, "cp1258"
+EUC-JP, "eucJP"
+EUC-KR, "eucKR"
+EUC-TW, "eucTW"
+BIG5, "big5"
+SHIFT_JIS, "SJIS"
+TIS-620, "TACTIS"
diff --git a/src/grep/lib/iconv_open-osf.h b/src/grep/lib/iconv_open-osf.h
new file mode 100644
index 0000000..cf23c08
--- /dev/null
+++ b/src/grep/lib/iconv_open-osf.h
@@ -0,0 +1,272 @@
+/* ANSI-C code produced by gperf version 3.1 */
+/* Command-line: gperf -m 10 ./iconv_open-osf.gperf  */
+/* Computed positions: -k'4,$' */
+
+#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
+      && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
+      && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
+      && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
+      && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
+      && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
+      && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
+      && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
+      && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
+      && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
+      && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
+      && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
+      && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
+      && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
+      && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
+      && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
+      && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
+      && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
+      && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
+      && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
+      && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
+      && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
+      && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
+/* The character set is not based on ISO-646.  */
+#error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gperf@gnu.org>."
+#endif
+
+#line 17 "./iconv_open-osf.gperf"
+struct mapping { int standard_name; const char vendor_name[10 + 1]; };
+
+#define TOTAL_KEYWORDS 38
+#define MIN_WORD_LENGTH 4
+#define MAX_WORD_LENGTH 11
+#define MIN_HASH_VALUE 6
+#define MAX_HASH_VALUE 47
+/* maximum key range = 42, duplicates = 0 */
+
+#ifdef __GNUC__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static unsigned int
+mapping_hash (register const char *str, register size_t len)
+{
+  static const unsigned char asso_values[] =
+    {
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48,  2, 29,
+      24, 34, 31,  0, 15, 14, 10, 13,  2, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48,  7, 48, 48, 48, 48, 48, 48,
+      11, 48,  2,  7, 48, 48, 48,  1, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+      48, 48, 48, 48, 48, 48, 48, 48, 48
+    };
+  return len + asso_values[(unsigned char)str[3]+3] + asso_values[(unsigned char)str[len - 1]];
+}
+
+struct stringpool_t
+  {
+    char stringpool_str6[sizeof("CP1255")];
+    char stringpool_str7[sizeof("CP775")];
+    char stringpool_str8[sizeof("CP1250")];
+    char stringpool_str9[sizeof("EUC-TW")];
+    char stringpool_str10[sizeof("EUC-KR")];
+    char stringpool_str11[sizeof("TIS-620")];
+    char stringpool_str12[sizeof("ISO-8859-5")];
+    char stringpool_str13[sizeof("ISO-8859-15")];
+    char stringpool_str14[sizeof("BIG5")];
+    char stringpool_str15[sizeof("CP855")];
+    char stringpool_str16[sizeof("CP1258")];
+    char stringpool_str17[sizeof("CP850")];
+    char stringpool_str18[sizeof("CP865")];
+    char stringpool_str19[sizeof("EUC-JP")];
+    char stringpool_str20[sizeof("CP1257")];
+    char stringpool_str21[sizeof("CP1256")];
+    char stringpool_str22[sizeof("ISO-8859-8")];
+    char stringpool_str23[sizeof("SHIFT_JIS")];
+    char stringpool_str25[sizeof("ISO-8859-9")];
+    char stringpool_str26[sizeof("ISO-8859-7")];
+    char stringpool_str27[sizeof("ISO-8859-6")];
+    char stringpool_str29[sizeof("CP857")];
+    char stringpool_str30[sizeof("CP1252")];
+    char stringpool_str31[sizeof("CP869")];
+    char stringpool_str32[sizeof("CP949")];
+    char stringpool_str33[sizeof("CP866")];
+    char stringpool_str34[sizeof("CP437")];
+    char stringpool_str35[sizeof("CP1251")];
+    char stringpool_str36[sizeof("ISO-8859-2")];
+    char stringpool_str37[sizeof("CP1254")];
+    char stringpool_str38[sizeof("CP874")];
+    char stringpool_str39[sizeof("CP852")];
+    char stringpool_str40[sizeof("CP1253")];
+    char stringpool_str41[sizeof("ISO-8859-1")];
+    char stringpool_str42[sizeof("CP862")];
+    char stringpool_str43[sizeof("ISO-8859-4")];
+    char stringpool_str46[sizeof("ISO-8859-3")];
+    char stringpool_str47[sizeof("CP861")];
+  };
+static const struct stringpool_t stringpool_contents =
+  {
+    "CP1255",
+    "CP775",
+    "CP1250",
+    "EUC-TW",
+    "EUC-KR",
+    "TIS-620",
+    "ISO-8859-5",
+    "ISO-8859-15",
+    "BIG5",
+    "CP855",
+    "CP1258",
+    "CP850",
+    "CP865",
+    "EUC-JP",
+    "CP1257",
+    "CP1256",
+    "ISO-8859-8",
+    "SHIFT_JIS",
+    "ISO-8859-9",
+    "ISO-8859-7",
+    "ISO-8859-6",
+    "CP857",
+    "CP1252",
+    "CP869",
+    "CP949",
+    "CP866",
+    "CP437",
+    "CP1251",
+    "ISO-8859-2",
+    "CP1254",
+    "CP874",
+    "CP852",
+    "CP1253",
+    "ISO-8859-1",
+    "CP862",
+    "ISO-8859-4",
+    "ISO-8859-3",
+    "CP861"
+  };
+#define stringpool ((const char *) &stringpool_contents)
+
+static const struct mapping mappings[] =
+  {
+    {-1}, {-1}, {-1}, {-1}, {-1}, {-1},
+#line 57 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str6, "cp1255"},
+#line 40 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str7, "cp775"},
+#line 52 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str8, "cp1250"},
+#line 63 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str9, "eucTW"},
+#line 62 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str10, "eucKR"},
+#line 66 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str11, "TACTIS"},
+#line 33 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str12, "ISO8859-5"},
+#line 38 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str13, "ISO8859-15"},
+#line 64 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str14, "big5"},
+#line 43 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str15, "cp855"},
+#line 60 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str16, "cp1258"},
+#line 41 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str17, "cp850"},
+#line 47 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str18, "cp865"},
+#line 61 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str19, "eucJP"},
+#line 59 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str20, "cp1257"},
+#line 58 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str21, "cp1256"},
+#line 36 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str22, "ISO8859-8"},
+#line 65 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str23, "SJIS"},
+    {-1},
+#line 37 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str25, "ISO8859-9"},
+#line 35 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str26, "ISO8859-7"},
+#line 34 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str27, "ISO8859-6"},
+    {-1},
+#line 44 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str29, "cp857"},
+#line 54 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str30, "cp1252"},
+#line 49 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str31, "cp869"},
+#line 51 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str32, "KSC5601"},
+#line 48 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str33, "cp866"},
+#line 39 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str34, "cp437"},
+#line 53 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str35, "cp1251"},
+#line 30 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str36, "ISO8859-2"},
+#line 56 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str37, "cp1254"},
+#line 50 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str38, "cp874"},
+#line 42 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str39, "cp852"},
+#line 55 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str40, "cp1253"},
+#line 29 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str41, "ISO8859-1"},
+#line 46 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str42, "cp862"},
+#line 32 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str43, "ISO8859-4"},
+    {-1}, {-1},
+#line 31 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str46, "ISO8859-3"},
+#line 45 "./iconv_open-osf.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str47, "cp861"}
+  };
+
+const struct mapping *
+mapping_lookup (register const char *str, register size_t len)
+{
+  if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
+    {
+      register unsigned int key = mapping_hash (str, len);
+
+      if (key <= MAX_HASH_VALUE)
+        {
+          register int o = mappings[key].standard_name;
+          if (o >= 0)
+            {
+              register const char *s = o + stringpool;
+
+              if (*str == *s && !strcmp (str + 1, s + 1))
+                return &mappings[key];
+            }
+        }
+    }
+  return 0;
+}
diff --git a/src/grep/lib/iconv_open-solaris.gperf b/src/grep/lib/iconv_open-solaris.gperf
new file mode 100644
index 0000000..648dd3a
--- /dev/null
+++ b/src/grep/lib/iconv_open-solaris.gperf
@@ -0,0 +1,46 @@
+/* Character set conversion.
+   Copyright (C) 2007, 2009, 2020-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+struct mapping { int standard_name; const char vendor_name[10 + 1]; };
+%struct-type
+%language=ANSI-C
+%define slot-name standard_name
+%define hash-function-name mapping_hash
+%define lookup-function-name mapping_lookup
+%readonly-tables
+%global-table
+%define word-array-name mappings
+%pic
+%%
+# On Solaris 10, look in the "iconv -l" output. Some aliases are advertised but
+# not actually supported by the iconv() function and by the 'iconv' program.
+# For example:
+#   $ echo abc | iconv -f 646 -t ISO-8859-1
+#   Not supported 646 to ISO-8859-1
+#   $ echo abc | iconv -f 646 -t ISO8859-1
+$   abc
+ASCII, "646"
+ISO-8859-1, "ISO8859-1"
+ISO-8859-2, "ISO8859-2"
+ISO-8859-3, "ISO8859-3"
+ISO-8859-4, "ISO8859-4"
+ISO-8859-5, "ISO8859-5"
+ISO-8859-6, "ISO8859-6"
+ISO-8859-7, "ISO8859-7"
+ISO-8859-8, "ISO8859-8"
+ISO-8859-9, "ISO8859-9"
+ISO-8859-15, "ISO8859-15"
+CP1251, "ansi-1251"
diff --git a/src/grep/lib/iconv_open-solaris.h b/src/grep/lib/iconv_open-solaris.h
new file mode 100644
index 0000000..b38b16c
--- /dev/null
+++ b/src/grep/lib/iconv_open-solaris.h
@@ -0,0 +1,184 @@
+/* ANSI-C code produced by gperf version 3.1 */
+/* Command-line: gperf -m 10 ./iconv_open-solaris.gperf  */
+/* Computed positions: -k'10' */
+
+#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
+      && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
+      && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
+      && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
+      && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
+      && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
+      && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
+      && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
+      && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
+      && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
+      && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
+      && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
+      && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
+      && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
+      && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
+      && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
+      && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
+      && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
+      && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
+      && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
+      && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
+      && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
+      && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
+/* The character set is not based on ISO-646.  */
+#error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gperf@gnu.org>."
+#endif
+
+#line 17 "./iconv_open-solaris.gperf"
+struct mapping { int standard_name; const char vendor_name[10 + 1]; };
+
+#define TOTAL_KEYWORDS 13
+#define MIN_WORD_LENGTH 5
+#define MAX_WORD_LENGTH 11
+#define MIN_HASH_VALUE 5
+#define MAX_HASH_VALUE 19
+/* maximum key range = 15, duplicates = 0 */
+
+#ifdef __GNUC__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static unsigned int
+mapping_hash (register const char *str, register size_t len)
+{
+  static const unsigned char asso_values[] =
+    {
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20,  0,
+       9,  8,  7,  6,  5,  4,  3,  2, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+      20, 20, 20, 20, 20, 20
+    };
+  register unsigned int hval = len;
+
+  switch (hval)
+    {
+      default:
+        hval += asso_values[(unsigned char)str[9]];
+      /*FALLTHROUGH*/
+      case 9:
+      case 8:
+      case 7:
+      case 6:
+      case 5:
+        break;
+    }
+  return hval;
+}
+
+struct stringpool_t
+  {
+    char stringpool_str5[sizeof("ASCII")];
+    char stringpool_str6[sizeof("CP1251")];
+    char stringpool_str7[sizeof("$   abc")];
+    char stringpool_str10[sizeof("ISO-8859-1")];
+    char stringpool_str11[sizeof("ISO-8859-15")];
+    char stringpool_str12[sizeof("ISO-8859-9")];
+    char stringpool_str13[sizeof("ISO-8859-8")];
+    char stringpool_str14[sizeof("ISO-8859-7")];
+    char stringpool_str15[sizeof("ISO-8859-6")];
+    char stringpool_str16[sizeof("ISO-8859-5")];
+    char stringpool_str17[sizeof("ISO-8859-4")];
+    char stringpool_str18[sizeof("ISO-8859-3")];
+    char stringpool_str19[sizeof("ISO-8859-2")];
+  };
+static const struct stringpool_t stringpool_contents =
+  {
+    "ASCII",
+    "CP1251",
+    "$   abc",
+    "ISO-8859-1",
+    "ISO-8859-15",
+    "ISO-8859-9",
+    "ISO-8859-8",
+    "ISO-8859-7",
+    "ISO-8859-6",
+    "ISO-8859-5",
+    "ISO-8859-4",
+    "ISO-8859-3",
+    "ISO-8859-2"
+  };
+#define stringpool ((const char *) &stringpool_contents)
+
+static const struct mapping mappings[] =
+  {
+    {-1}, {-1}, {-1}, {-1}, {-1},
+#line 35 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str5, "646"},
+#line 46 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str6, "ansi-1251"},
+#line 34 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str7},
+    {-1}, {-1},
+#line 36 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str10, "ISO8859-1"},
+#line 45 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str11, "ISO8859-15"},
+#line 44 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str12, "ISO8859-9"},
+#line 43 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str13, "ISO8859-8"},
+#line 42 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str14, "ISO8859-7"},
+#line 41 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str15, "ISO8859-6"},
+#line 40 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str16, "ISO8859-5"},
+#line 39 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str17, "ISO8859-4"},
+#line 38 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str18, "ISO8859-3"},
+#line 37 "./iconv_open-solaris.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str19, "ISO8859-2"}
+  };
+
+const struct mapping *
+mapping_lookup (register const char *str, register size_t len)
+{
+  if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
+    {
+      register unsigned int key = mapping_hash (str, len);
+
+      if (key <= MAX_HASH_VALUE)
+        {
+          register int o = mappings[key].standard_name;
+          if (o >= 0)
+            {
+              register const char *s = o + stringpool;
+
+              if (*str == *s && !strcmp (str + 1, s + 1))
+                return &mappings[key];
+            }
+        }
+    }
+  return 0;
+}
diff --git a/src/grep/lib/iconv_open-zos.gperf b/src/grep/lib/iconv_open-zos.gperf
new file mode 100644
index 0000000..1c3552e
--- /dev/null
+++ b/src/grep/lib/iconv_open-zos.gperf
@@ -0,0 +1,76 @@
+/* Character set conversion.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+struct mapping { int standard_name; const char vendor_name[10 + 1]; };
+%struct-type
+%language=ANSI-C
+%define slot-name standard_name
+%define hash-function-name mapping_hash
+%define lookup-function-name mapping_lookup
+%readonly-tables
+%global-table
+%define word-array-name mappings
+%pic
+%%
+ASCII, "00367"
+ISO-8859-1, "ISO8859-1"
+ISO-8859-2, "ISO8859-2"
+ISO-8859-3, "00913"
+ISO-8859-4, "ISO8859-4"
+ISO-8859-5, "ISO8859-5"
+ISO-8859-6, "ISO8859-6"
+ISO-8859-7, "ISO8859-7"
+ISO-8859-8, "05012"
+ISO-8859-9, "ISO8859-9"
+ISO-8859-13, "ISO8859-13"
+ISO-8859-15, "ISO8859-15"
+KOI8-R, "00878"
+KOI8-U, "01168"
+CP437, "IBM-437"
+CP775, "00775"
+CP850, "09042"
+CP852, "IBM-852"
+CP855, "13143"
+CP856, "IBM-856"
+CP857, "00857"
+CP861, "IBM-861"
+CP862, "IBM-862"
+CP864, "IBM-864"
+CP865, "00865"
+CP866, "04962"
+CP869, "IBM-869"
+CP874, "TIS-620"
+CP922, "IBM-922"
+CP932, "IBM-943"
+CP943, "IBM-943"
+CP949, "IBM-1363"
+CP1046, "IBM-1046"
+CP1124, "IBM-1124"
+CP1125, "IBM-1125"
+CP1129, "01129"
+CP1131, "01131"
+CP1250, "IBM-5346"
+CP1251, "IBM-5347"
+CP1252, "IBM-5348"
+CP1253, "IBM-5349"
+CP1254, "IBM-5350"
+CP1255, "09447"
+CP1256, "09448"
+CP1257, "09449"
+GB2312, "IBM-eucCN"
+EUC-JP, "01350"
+EUC-KR, "IBM-eucKR"
+GBK, "IBM-1386"
diff --git a/src/grep/lib/iconv_open-zos.h b/src/grep/lib/iconv_open-zos.h
new file mode 100644
index 0000000..5f84725
--- /dev/null
+++ b/src/grep/lib/iconv_open-zos.h
@@ -0,0 +1,329 @@
+/* ANSI-C code produced by gperf version 3.1 */
+/* Command-line: gperf -m 10 ./iconv_open-zos.gperf  */
+/* Computed positions: -k'4,$' */
+
+#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
+      && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
+      && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
+      && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
+      && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
+      && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
+      && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
+      && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
+      && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
+      && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
+      && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
+      && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
+      && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
+      && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
+      && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
+      && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
+      && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
+      && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
+      && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
+      && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
+      && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
+      && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
+      && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
+/* The character set is not based on ISO-646.  */
+#error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gperf@gnu.org>."
+#endif
+
+#line 17 "./iconv_open-zos.gperf"
+struct mapping { int standard_name; const char vendor_name[10 + 1]; };
+
+#define TOTAL_KEYWORDS 49
+#define MIN_WORD_LENGTH 3
+#define MAX_WORD_LENGTH 11
+#define MIN_HASH_VALUE 3
+#define MAX_HASH_VALUE 64
+/* maximum key range = 62, duplicates = 0 */
+
+#ifdef __GNUC__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static unsigned int
+mapping_hash (register const char *str, register size_t len)
+{
+  static const unsigned char asso_values[] =
+    {
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 16, 38,
+      14,  1, 32, 22, 29,  3,  0,  7, 40,  2,
+       5, 18, 23, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65,  0, 65,  0, 65, 65, 65,  0,
+      43, 65,  1, 65, 65,  8, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
+      65, 65
+    };
+  register unsigned int hval = len;
+
+  switch (hval)
+    {
+      default:
+        hval += asso_values[(unsigned char)str[3]+6];
+      /*FALLTHROUGH*/
+      case 3:
+        break;
+    }
+  return hval + asso_values[(unsigned char)str[len - 1]];
+}
+
+struct stringpool_t
+  {
+    char stringpool_str3[sizeof("GBK")];
+    char stringpool_str5[sizeof("ASCII")];
+    char stringpool_str7[sizeof("CP1253")];
+    char stringpool_str8[sizeof("EUC-KR")];
+    char stringpool_str9[sizeof("CP1257")];
+    char stringpool_str10[sizeof("CP857")];
+    char stringpool_str11[sizeof("ISO-8859-8")];
+    char stringpool_str12[sizeof("ISO-8859-3")];
+    char stringpool_str13[sizeof("ISO-8859-13")];
+    char stringpool_str14[sizeof("ISO-8859-7")];
+    char stringpool_str15[sizeof("CP437")];
+    char stringpool_str16[sizeof("CP1129")];
+    char stringpool_str17[sizeof("CP869")];
+    char stringpool_str18[sizeof("ISO-8859-9")];
+    char stringpool_str19[sizeof("CP922")];
+    char stringpool_str20[sizeof("CP1252")];
+    char stringpool_str21[sizeof("CP852")];
+    char stringpool_str22[sizeof("CP1250")];
+    char stringpool_str23[sizeof("CP850")];
+    char stringpool_str24[sizeof("CP862")];
+    char stringpool_str25[sizeof("ISO-8859-2")];
+    char stringpool_str26[sizeof("CP932")];
+    char stringpool_str27[sizeof("GB2312")];
+    char stringpool_str28[sizeof("CP1255")];
+    char stringpool_str29[sizeof("CP855")];
+    char stringpool_str30[sizeof("KOI8-R")];
+    char stringpool_str31[sizeof("CP1125")];
+    char stringpool_str32[sizeof("CP865")];
+    char stringpool_str33[sizeof("ISO-8859-5")];
+    char stringpool_str34[sizeof("ISO-8859-15")];
+    char stringpool_str35[sizeof("CP1256")];
+    char stringpool_str36[sizeof("CP856")];
+    char stringpool_str37[sizeof("KOI8-U")];
+    char stringpool_str38[sizeof("CP1254")];
+    char stringpool_str39[sizeof("CP866")];
+    char stringpool_str40[sizeof("ISO-8859-6")];
+    char stringpool_str41[sizeof("CP1124")];
+    char stringpool_str42[sizeof("CP864")];
+    char stringpool_str43[sizeof("ISO-8859-4")];
+    char stringpool_str44[sizeof("CP1251")];
+    char stringpool_str45[sizeof("CP775")];
+    char stringpool_str46[sizeof("CP943")];
+    char stringpool_str47[sizeof("CP1131")];
+    char stringpool_str48[sizeof("CP861")];
+    char stringpool_str49[sizeof("ISO-8859-1")];
+    char stringpool_str50[sizeof("EUC-JP")];
+    char stringpool_str52[sizeof("CP949")];
+    char stringpool_str55[sizeof("CP874")];
+    char stringpool_str64[sizeof("CP1046")];
+  };
+static const struct stringpool_t stringpool_contents =
+  {
+    "GBK",
+    "ASCII",
+    "CP1253",
+    "EUC-KR",
+    "CP1257",
+    "CP857",
+    "ISO-8859-8",
+    "ISO-8859-3",
+    "ISO-8859-13",
+    "ISO-8859-7",
+    "CP437",
+    "CP1129",
+    "CP869",
+    "ISO-8859-9",
+    "CP922",
+    "CP1252",
+    "CP852",
+    "CP1250",
+    "CP850",
+    "CP862",
+    "ISO-8859-2",
+    "CP932",
+    "GB2312",
+    "CP1255",
+    "CP855",
+    "KOI8-R",
+    "CP1125",
+    "CP865",
+    "ISO-8859-5",
+    "ISO-8859-15",
+    "CP1256",
+    "CP856",
+    "KOI8-U",
+    "CP1254",
+    "CP866",
+    "ISO-8859-6",
+    "CP1124",
+    "CP864",
+    "ISO-8859-4",
+    "CP1251",
+    "CP775",
+    "CP943",
+    "CP1131",
+    "CP861",
+    "ISO-8859-1",
+    "EUC-JP",
+    "CP949",
+    "CP874",
+    "CP1046"
+  };
+#define stringpool ((const char *) &stringpool_contents)
+
+static const struct mapping mappings[] =
+  {
+    {-1}, {-1}, {-1},
+#line 76 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str3, "IBM-1386"},
+    {-1},
+#line 28 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str5, "00367"},
+    {-1},
+#line 68 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str7, "IBM-5349"},
+#line 75 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str8, "IBM-eucKR"},
+#line 72 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str9, "09449"},
+#line 48 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str10, "00857"},
+#line 36 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str11, "05012"},
+#line 31 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str12, "00913"},
+#line 38 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str13, "ISO8859-13"},
+#line 35 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str14, "ISO8859-7"},
+#line 42 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str15, "IBM-437"},
+#line 63 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str16, "01129"},
+#line 54 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str17, "IBM-869"},
+#line 37 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str18, "ISO8859-9"},
+#line 56 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str19, "IBM-922"},
+#line 67 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str20, "IBM-5348"},
+#line 45 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str21, "IBM-852"},
+#line 65 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str22, "IBM-5346"},
+#line 44 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str23, "09042"},
+#line 50 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str24, "IBM-862"},
+#line 30 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str25, "ISO8859-2"},
+#line 57 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str26, "IBM-943"},
+#line 73 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str27, "IBM-eucCN"},
+#line 70 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str28, "09447"},
+#line 46 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str29, "13143"},
+#line 40 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str30, "00878"},
+#line 62 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str31, "IBM-1125"},
+#line 52 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str32, "00865"},
+#line 33 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str33, "ISO8859-5"},
+#line 39 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str34, "ISO8859-15"},
+#line 71 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str35, "09448"},
+#line 47 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str36, "IBM-856"},
+#line 41 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str37, "01168"},
+#line 69 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str38, "IBM-5350"},
+#line 53 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str39, "04962"},
+#line 34 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str40, "ISO8859-6"},
+#line 61 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str41, "IBM-1124"},
+#line 51 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str42, "IBM-864"},
+#line 32 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str43, "ISO8859-4"},
+#line 66 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str44, "IBM-5347"},
+#line 43 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str45, "00775"},
+#line 58 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str46, "IBM-943"},
+#line 64 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str47, "01131"},
+#line 49 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str48, "IBM-861"},
+#line 29 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str49, "ISO8859-1"},
+#line 74 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str50, "01350"},
+    {-1},
+#line 59 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str52, "IBM-1363"},
+    {-1}, {-1},
+#line 55 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str55, "TIS-620"},
+    {-1}, {-1}, {-1}, {-1}, {-1}, {-1}, {-1}, {-1},
+#line 60 "./iconv_open-zos.gperf"
+    {(int)(size_t)&((struct stringpool_t *)0)->stringpool_str64, "IBM-1046"}
+  };
+
+const struct mapping *
+mapping_lookup (register const char *str, register size_t len)
+{
+  if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
+    {
+      register unsigned int key = mapping_hash (str, len);
+
+      if (key <= MAX_HASH_VALUE)
+        {
+          register int o = mappings[key].standard_name;
+          if (o >= 0)
+            {
+              register const char *s = o + stringpool;
+
+              if (*str == *s && !strcmp (str + 1, s + 1))
+                return &mappings[key];
+            }
+        }
+    }
+  return 0;
+}
diff --git a/src/grep/lib/iconv_open.c b/src/grep/lib/iconv_open.c
new file mode 100644
index 0000000..e573556
--- /dev/null
+++ b/src/grep/lib/iconv_open.c
@@ -0,0 +1,173 @@
+/* Character set conversion.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <iconv.h>
+
+#include <errno.h>
+#include <string.h>
+#include "c-ctype.h"
+#include "c-strcase.h"
+
+#define SIZEOF(a) (sizeof(a) / sizeof(a[0]))
+
+/* Namespace cleanliness.  */
+#define mapping_lookup rpl_iconv_open_mapping_lookup
+
+/* The macro ICONV_FLAVOR is defined to one of these or undefined.  */
+
+#define ICONV_FLAVOR_AIX "iconv_open-aix.h"
+#define ICONV_FLAVOR_HPUX "iconv_open-hpux.h"
+#define ICONV_FLAVOR_IRIX "iconv_open-irix.h"
+#define ICONV_FLAVOR_OSF "iconv_open-osf.h"
+#define ICONV_FLAVOR_SOLARIS "iconv_open-solaris.h"
+#define ICONV_FLAVOR_ZOS "iconv_open-zos.h"
+
+#ifdef ICONV_FLAVOR
+# include ICONV_FLAVOR
+#endif
+
+iconv_t
+rpl_iconv_open (const char *tocode, const char *fromcode)
+#undef iconv_open
+{
+  char fromcode_upper[32];
+  char tocode_upper[32];
+  char *fromcode_upper_end;
+  char *tocode_upper_end;
+
+#if REPLACE_ICONV_UTF
+  /* Special handling of conversion between UTF-8 and UTF-{16,32}{BE,LE}.
+     Do this here, before calling the real iconv_open(), because  OSF/1 5.1
+     iconv() to these encoding inserts a BOM, which is wrong.
+     We do not need to handle conversion between arbitrary encodings and
+     UTF-{16,32}{BE,LE}, because the 'striconveh' module implements two-step
+     conversion through UTF-8.
+     The _ICONV_* constants are chosen to be disjoint from any iconv_t
+     returned by the system's iconv_open() functions.  Recall that iconv_t
+     is a scalar type.  */
+  if (c_toupper (fromcode[0]) == 'U'
+      && c_toupper (fromcode[1]) == 'T'
+      && c_toupper (fromcode[2]) == 'F'
+      && fromcode[3] == '-')
+    {
+      if (c_toupper (tocode[0]) == 'U'
+          && c_toupper (tocode[1]) == 'T'
+          && c_toupper (tocode[2]) == 'F'
+          && tocode[3] == '-')
+        {
+          if (strcmp (fromcode + 4, "8") == 0)
+            {
+              if (c_strcasecmp (tocode + 4, "16BE") == 0)
+                return _ICONV_UTF8_UTF16BE;
+              if (c_strcasecmp (tocode + 4, "16LE") == 0)
+                return _ICONV_UTF8_UTF16LE;
+              if (c_strcasecmp (tocode + 4, "32BE") == 0)
+                return _ICONV_UTF8_UTF32BE;
+              if (c_strcasecmp (tocode + 4, "32LE") == 0)
+                return _ICONV_UTF8_UTF32LE;
+            }
+          else if (strcmp (tocode + 4, "8") == 0)
+            {
+              if (c_strcasecmp (fromcode + 4, "16BE") == 0)
+                return _ICONV_UTF16BE_UTF8;
+              if (c_strcasecmp (fromcode + 4, "16LE") == 0)
+                return _ICONV_UTF16LE_UTF8;
+              if (c_strcasecmp (fromcode + 4, "32BE") == 0)
+                return _ICONV_UTF32BE_UTF8;
+              if (c_strcasecmp (fromcode + 4, "32LE") == 0)
+                return _ICONV_UTF32LE_UTF8;
+            }
+        }
+    }
+#endif
+
+  /* Do *not* add special support for 8-bit encodings like ASCII or ISO-8859-1
+     here.  This would lead to programs that work in some locales (such as the
+     "C" or "en_US" locales) but do not work in East Asian locales.  It is
+     better if programmers make their programs depend on GNU libiconv (except
+     on glibc systems), e.g. by using the AM_ICONV macro and documenting the
+     dependency in an INSTALL or DEPENDENCIES file.  */
+
+  /* Try with the original names first.
+     This covers the case when fromcode or tocode is a lowercase encoding name
+     that is understood by the system's iconv_open but not listed in our
+     mappings table.  */
+  {
+    iconv_t cd = iconv_open (tocode, fromcode);
+    if (cd != (iconv_t)(-1))
+      return cd;
+  }
+
+  /* Convert the encodings to upper case, because
+       1. in the arguments of iconv_open() on AIX, HP-UX, and OSF/1 the case
+          matters,
+       2. it makes searching in the table faster.  */
+  {
+    const char *p = fromcode;
+    char *q = fromcode_upper;
+    while ((*q = c_toupper (*p)) != '\0')
+      {
+        p++;
+        q++;
+        if (q == &fromcode_upper[SIZEOF (fromcode_upper)])
+          {
+            errno = EINVAL;
+            return (iconv_t)(-1);
+          }
+      }
+    fromcode_upper_end = q;
+  }
+
+  {
+    const char *p = tocode;
+    char *q = tocode_upper;
+    while ((*q = c_toupper (*p)) != '\0')
+      {
+        p++;
+        q++;
+        if (q == &tocode_upper[SIZEOF (tocode_upper)])
+          {
+            errno = EINVAL;
+            return (iconv_t)(-1);
+          }
+      }
+    tocode_upper_end = q;
+  }
+
+#ifdef ICONV_FLAVOR
+  /* Apply the mappings.  */
+  {
+    const struct mapping *m =
+      mapping_lookup (fromcode_upper, fromcode_upper_end - fromcode_upper);
+
+    fromcode = (m != NULL ? m->vendor_name : fromcode_upper);
+  }
+  {
+    const struct mapping *m =
+      mapping_lookup (tocode_upper, tocode_upper_end - tocode_upper);
+
+    tocode = (m != NULL ? m->vendor_name : tocode_upper);
+  }
+#else
+  fromcode = fromcode_upper;
+  tocode = tocode_upper;
+#endif
+
+  return iconv_open (tocode, fromcode);
+}
diff --git a/src/grep/lib/idx.h b/src/grep/lib/idx.h
new file mode 100644
index 0000000..483587e
--- /dev/null
+++ b/src/grep/lib/idx.h
@@ -0,0 +1,114 @@
+/* A type for indices and sizes.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _IDX_H
+#define _IDX_H
+
+/* Get ptrdiff_t.  */
+#include <stddef.h>
+
+/* Get PTRDIFF_MAX.  */
+#include <stdint.h>
+
+/* The type 'idx_t' holds an (array) index or an (object) size.
+   Its implementation promotes to a signed integer type,
+   which can hold the values
+     0..2^63-1 (on 64-bit platforms) or
+     0..2^31-1 (on 32-bit platforms).
+
+   Why a signed integer type?
+
+     * Security: Signed types can be checked for overflow via
+       '-fsanitize=undefined', but unsigned types cannot.
+
+     * Comparisons without surprises: ISO C99 § 6.3.1.8 specifies a few
+       surprising results for comparisons, such as
+
+           (int) -3 < (unsigned long) 7  =>  false
+           (int) -3 < (unsigned int) 7   =>  false
+       and on 32-bit machines:
+           (long) -3 < (unsigned int) 7  =>  false
+
+       This is surprising because the natural comparison order is by
+       value in the realm of infinite-precision signed integers (ℤ).
+
+       The best way to get rid of such surprises is to use signed types
+       for numerical integer values, and use unsigned types only for
+       bit masks and enums.
+
+   Why not use 'size_t' directly?
+
+     * Because 'size_t' is an unsigned type, and a signed type is better.
+       See above.
+
+   Why not use 'ptrdiff_t' directly?
+
+     * Maintainability: When reading and modifying code, it helps to know that
+       a certain variable cannot have negative values.  For example, when you
+       have a loop
+
+         int n = ...;
+         for (int i = 0; i < n; i++) ...
+
+       or
+
+         ptrdiff_t n = ...;
+         for (ptrdiff_t i = 0; i < n; i++) ...
+
+       you have to ask yourself "what if n < 0?".  Whereas in
+
+         idx_t n = ...;
+         for (idx_t i = 0; i < n; i++) ...
+
+       you know that this case cannot happen.
+
+       Similarly, when a programmer writes
+
+         idx_t = ptr2 - ptr1;
+
+       there is an implied assertion that ptr1 and ptr2 point into the same
+       object and that ptr1 <= ptr2.
+
+     * Being future-proof: In the future, range types (integers which are
+       constrained to a certain range of values) may be added to C compilers
+       or to the C standard.  Several programming languages (Ada, Haskell,
+       Common Lisp, Pascal) already have range types.  Such range types may
+       help producing good code and good warnings.  The type 'idx_t' could
+       then be typedef'ed to a range type that is signed after promotion.  */
+
+/* In the future, idx_t could be typedef'ed to a signed range type.
+   The clang "extended integer types", supported in Clang 11 or newer
+   <https://clang.llvm.org/docs/LanguageExtensions.html#extended-integer-types>,
+   are a special case of range types.  However, these types don't support binary
+   operators with plain integer types (e.g. expressions such as x > 1).
+   Therefore, they don't behave like signed types (and not like unsigned types
+   either).  So, we cannot use them here.  */
+
+/* Use the signed type 'ptrdiff_t'.  */
+/* Note: ISO C does not mandate that 'size_t' and 'ptrdiff_t' have the same
+   size, but it is so on all platforms we have seen since 1990.  */
+typedef ptrdiff_t idx_t;
+
+/* IDX_MAX is the maximum value of an idx_t.  */
+#define IDX_MAX PTRDIFF_MAX
+
+/* So far no need has been found for an IDX_WIDTH macro.
+   Perhaps there should be another macro IDX_VALUE_BITS that does not
+   count the sign bit and is therefore one less than PTRDIFF_WIDTH.  */
+
+#endif /* _IDX_H */
diff --git a/src/grep/lib/ignore-value.h b/src/grep/lib/ignore-value.h
new file mode 100644
index 0000000..6099aba
--- /dev/null
+++ b/src/grep/lib/ignore-value.h
@@ -0,0 +1,51 @@
+/* ignore a function return without a compiler warning.  -*- coding: utf-8 -*-
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering, Eric Blake and Pádraig Brady.  */
+
+/* Use "ignore_value" to avoid a warning when using a function declared with
+   gcc's warn_unused_result attribute, but for which you really do want to
+   ignore the result.  Traditionally, people have used a "(void)" cast to
+   indicate that a function's return value is deliberately unused.  However,
+   if the function is declared with __attribute__((warn_unused_result)),
+   gcc issues a warning even with the cast.
+
+   Caution: most of the time, you really should heed gcc's warning, and
+   check the return value.  However, in those exceptional cases in which
+   you're sure you know what you're doing, use this function.
+
+   For the record, here's one of the ignorable warnings:
+   "copy.c:233: warning: ignoring return value of 'fchown',
+   declared with attribute warn_unused_result".  */
+
+#ifndef _GL_IGNORE_VALUE_H
+#define _GL_IGNORE_VALUE_H
+
+/* Normally casting an expression to void discards its value, but GCC
+   versions 3.4 and newer have __attribute__ ((__warn_unused_result__))
+   which may cause unwanted diagnostics in that case.  Use __typeof__
+   and __extension__ to work around the problem, if the workaround is
+   known to be needed.
+   The workaround is not needed with clang.  */
+#if (3 < __GNUC__ + (4 <= __GNUC_MINOR__)) && !defined __clang__
+# define ignore_value(x) \
+    (__extension__ ({ __typeof__ (x) __x = (x); (void) __x; }))
+#else
+# define ignore_value(x) ((void) (x))
+#endif
+
+#endif
diff --git a/src/grep/lib/intprops.h b/src/grep/lib/intprops.h
new file mode 100644
index 0000000..9d10028
--- /dev/null
+++ b/src/grep/lib/intprops.h
@@ -0,0 +1,640 @@
+/* intprops.h -- properties of integer types
+
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2.1 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#ifndef _GL_INTPROPS_H
+#define _GL_INTPROPS_H
+
+#include <limits.h>
+
+/* Return a value with the common real type of E and V and the value of V.
+   Do not evaluate E.  */
+#define _GL_INT_CONVERT(e, v) ((1 ? 0 : (e)) + (v))
+
+/* Act like _GL_INT_CONVERT (E, -V) but work around a bug in IRIX 6.5 cc; see
+   <https://lists.gnu.org/r/bug-gnulib/2011-05/msg00406.html>.  */
+#define _GL_INT_NEGATE_CONVERT(e, v) ((1 ? 0 : (e)) - (v))
+
+/* The extra casts in the following macros work around compiler bugs,
+   e.g., in Cray C 5.0.3.0.  */
+
+/* True if the arithmetic type T is an integer type.  bool counts as
+   an integer.  */
+#define TYPE_IS_INTEGER(t) ((t) 1.5 == 1)
+
+/* True if the real type T is signed.  */
+#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+
+/* Return 1 if the real expression E, after promotion, has a
+   signed or floating type.  Do not evaluate E.  */
+#define EXPR_SIGNED(e) (_GL_INT_NEGATE_CONVERT (e, 1) < 0)
+
+
+/* Minimum and maximum values for integer types and expressions.  */
+
+/* The width in bits of the integer type or expression T.
+   Do not evaluate T.  T must not be a bit-field expression.
+   Padding bits are not supported; this is checked at compile-time below.  */
+#define TYPE_WIDTH(t) (sizeof (t) * CHAR_BIT)
+
+/* The maximum and minimum values for the integer type T.  */
+#define TYPE_MINIMUM(t) ((t) ~ TYPE_MAXIMUM (t))
+#define TYPE_MAXIMUM(t)                                                 \
+  ((t) (! TYPE_SIGNED (t)                                               \
+        ? (t) -1                                                        \
+        : ((((t) 1 << (TYPE_WIDTH (t) - 2)) - 1) * 2 + 1)))
+
+/* The maximum and minimum values for the type of the expression E,
+   after integer promotion.  E is not evaluated.  */
+#define _GL_INT_MINIMUM(e)                                              \
+  (EXPR_SIGNED (e)                                                      \
+   ? ~ _GL_SIGNED_INT_MAXIMUM (e)                                       \
+   : _GL_INT_CONVERT (e, 0))
+#define _GL_INT_MAXIMUM(e)                                              \
+  (EXPR_SIGNED (e)                                                      \
+   ? _GL_SIGNED_INT_MAXIMUM (e)                                         \
+   : _GL_INT_NEGATE_CONVERT (e, 1))
+#define _GL_SIGNED_INT_MAXIMUM(e)                                       \
+  (((_GL_INT_CONVERT (e, 1) << (TYPE_WIDTH (+ (e)) - 2)) - 1) * 2 + 1)
+
+/* Work around OpenVMS incompatibility with C99.  */
+#if !defined LLONG_MAX && defined __INT64_MAX
+# define LLONG_MAX __INT64_MAX
+# define LLONG_MIN __INT64_MIN
+#endif
+
+/* This include file assumes that signed types are two's complement without
+   padding bits; the above macros have undefined behavior otherwise.
+   If this is a problem for you, please let us know how to fix it for your host.
+   This assumption is tested by the intprops-tests module.  */
+
+/* Does the __typeof__ keyword work?  This could be done by
+   'configure', but for now it's easier to do it by hand.  */
+#if (2 <= __GNUC__ \
+     || (4 <= __clang_major__) \
+     || (1210 <= __IBMC__ && defined __IBM__TYPEOF__) \
+     || (0x5110 <= __SUNPRO_C && !__STDC__))
+# define _GL_HAVE___TYPEOF__ 1
+#else
+# define _GL_HAVE___TYPEOF__ 0
+#endif
+
+/* Return 1 if the integer type or expression T might be signed.  Return 0
+   if it is definitely unsigned.  T must not be a bit-field expression.
+   This macro does not evaluate its argument, and expands to an
+   integer constant expression.  */
+#if _GL_HAVE___TYPEOF__
+# define _GL_SIGNED_TYPE_OR_EXPR(t) TYPE_SIGNED (__typeof__ (t))
+#else
+# define _GL_SIGNED_TYPE_OR_EXPR(t) 1
+#endif
+
+/* Bound on length of the string representing an unsigned integer
+   value representable in B bits.  log10 (2.0) < 146/485.  The
+   smallest value of B where this bound is not tight is 2621.  */
+#define INT_BITS_STRLEN_BOUND(b) (((b) * 146 + 484) / 485)
+
+/* Bound on length of the string representing an integer type or expression T.
+   T must not be a bit-field expression.
+
+   Subtract 1 for the sign bit if T is signed, and then add 1 more for
+   a minus sign if needed.
+
+   Because _GL_SIGNED_TYPE_OR_EXPR sometimes returns 1 when its argument is
+   unsigned, this macro may overestimate the true bound by one byte when
+   applied to unsigned types of size 2, 4, 16, ... bytes.  */
+#define INT_STRLEN_BOUND(t)                                     \
+  (INT_BITS_STRLEN_BOUND (TYPE_WIDTH (t) - _GL_SIGNED_TYPE_OR_EXPR (t)) \
+   + _GL_SIGNED_TYPE_OR_EXPR (t))
+
+/* Bound on buffer size needed to represent an integer type or expression T,
+   including the terminating null.  T must not be a bit-field expression.  */
+#define INT_BUFSIZE_BOUND(t) (INT_STRLEN_BOUND (t) + 1)
+
+
+/* Range overflow checks.
+
+   The INT_<op>_RANGE_OVERFLOW macros return 1 if the corresponding C
+   operators might not yield numerically correct answers due to
+   arithmetic overflow.  They do not rely on undefined or
+   implementation-defined behavior.  Their implementations are simple
+   and straightforward, but they are harder to use and may be less
+   efficient than the INT_<op>_WRAPV, INT_<op>_OK, and
+   INT_<op>_OVERFLOW macros described below.
+
+   Example usage:
+
+     long int i = ...;
+     long int j = ...;
+     if (INT_MULTIPLY_RANGE_OVERFLOW (i, j, LONG_MIN, LONG_MAX))
+       printf ("multiply would overflow");
+     else
+       printf ("product is %ld", i * j);
+
+   Restrictions on *_RANGE_OVERFLOW macros:
+
+   These macros do not check for all possible numerical problems or
+   undefined or unspecified behavior: they do not check for division
+   by zero, for bad shift counts, or for shifting negative numbers.
+
+   These macros may evaluate their arguments zero or multiple times,
+   so the arguments should not have side effects.  The arithmetic
+   arguments (including the MIN and MAX arguments) must be of the same
+   integer type after the usual arithmetic conversions, and the type
+   must have minimum value MIN and maximum MAX.  Unsigned types should
+   use a zero MIN of the proper type.
+
+   Because all arguments are subject to integer promotions, these
+   macros typically do not work on types narrower than 'int'.
+
+   These macros are tuned for constant MIN and MAX.  For commutative
+   operations such as A + B, they are also tuned for constant B.  */
+
+/* Return 1 if A + B would overflow in [MIN,MAX] arithmetic.
+   See above for restrictions.  */
+#define INT_ADD_RANGE_OVERFLOW(a, b, min, max)          \
+  ((b) < 0                                              \
+   ? (a) < (min) - (b)                                  \
+   : (max) - (b) < (a))
+
+/* Return 1 if A - B would overflow in [MIN,MAX] arithmetic.
+   See above for restrictions.  */
+#define INT_SUBTRACT_RANGE_OVERFLOW(a, b, min, max)     \
+  ((b) < 0                                              \
+   ? (max) + (b) < (a)                                  \
+   : (a) < (min) + (b))
+
+/* Return 1 if - A would overflow in [MIN,MAX] arithmetic.
+   See above for restrictions.  */
+#define INT_NEGATE_RANGE_OVERFLOW(a, min, max)          \
+  ((min) < 0                                            \
+   ? (a) < - (max)                                      \
+   : 0 < (a))
+
+/* Return 1 if A * B would overflow in [MIN,MAX] arithmetic.
+   See above for restrictions.  Avoid && and || as they tickle
+   bugs in Sun C 5.11 2010/08/13 and other compilers; see
+   <https://lists.gnu.org/r/bug-gnulib/2011-05/msg00401.html>.  */
+#define INT_MULTIPLY_RANGE_OVERFLOW(a, b, min, max)     \
+  ((b) < 0                                              \
+   ? ((a) < 0                                           \
+      ? (a) < (max) / (b)                               \
+      : (b) == -1                                       \
+      ? 0                                               \
+      : (min) / (b) < (a))                              \
+   : (b) == 0                                           \
+   ? 0                                                  \
+   : ((a) < 0                                           \
+      ? (a) < (min) / (b)                               \
+      : (max) / (b) < (a)))
+
+/* Return 1 if A / B would overflow in [MIN,MAX] arithmetic.
+   See above for restrictions.  Do not check for division by zero.  */
+#define INT_DIVIDE_RANGE_OVERFLOW(a, b, min, max)       \
+  ((min) < 0 && (b) == -1 && (a) < - (max))
+
+/* Return 1 if A % B would overflow in [MIN,MAX] arithmetic.
+   See above for restrictions.  Do not check for division by zero.
+   Mathematically, % should never overflow, but on x86-like hosts
+   INT_MIN % -1 traps, and the C standard permits this, so treat this
+   as an overflow too.  */
+#define INT_REMAINDER_RANGE_OVERFLOW(a, b, min, max)    \
+  INT_DIVIDE_RANGE_OVERFLOW (a, b, min, max)
+
+/* Return 1 if A << B would overflow in [MIN,MAX] arithmetic.
+   See above for restrictions.  Here, MIN and MAX are for A only, and B need
+   not be of the same type as the other arguments.  The C standard says that
+   behavior is undefined for shifts unless 0 <= B < wordwidth, and that when
+   A is negative then A << B has undefined behavior and A >> B has
+   implementation-defined behavior, but do not check these other
+   restrictions.  */
+#define INT_LEFT_SHIFT_RANGE_OVERFLOW(a, b, min, max)   \
+  ((a) < 0                                              \
+   ? (a) < (min) >> (b)                                 \
+   : (max) >> (b) < (a))
+
+/* True if __builtin_add_overflow (A, B, P) and __builtin_sub_overflow
+   (A, B, P) work when P is non-null.  */
+/* __builtin_{add,sub}_overflow exists but is not reliable in GCC 5.x and 6.x,
+   see <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98269>.  */
+#if 7 <= __GNUC__ && !defined __ICC
+# define _GL_HAS_BUILTIN_ADD_OVERFLOW 1
+#elif defined __has_builtin
+# define _GL_HAS_BUILTIN_ADD_OVERFLOW __has_builtin (__builtin_add_overflow)
+#else
+# define _GL_HAS_BUILTIN_ADD_OVERFLOW 0
+#endif
+
+/* True if __builtin_mul_overflow (A, B, P) works when P is non-null.  */
+#ifdef __clang__
+/* Work around Clang bug <https://bugs.llvm.org/show_bug.cgi?id=16404>.  */
+# define _GL_HAS_BUILTIN_MUL_OVERFLOW 0
+#else
+# define _GL_HAS_BUILTIN_MUL_OVERFLOW _GL_HAS_BUILTIN_ADD_OVERFLOW
+#endif
+
+/* True if __builtin_add_overflow_p (A, B, C) works, and similarly for
+   __builtin_sub_overflow_p and __builtin_mul_overflow_p.  */
+#if defined __clang__ || defined __ICC
+/* Clang 11 lacks __builtin_mul_overflow_p, and even if it did it
+   would presumably run afoul of Clang bug 16404.  ICC 2021.1's
+   __builtin_add_overflow_p etc. are not treated as integral constant
+   expressions even when all arguments are.  */
+# define _GL_HAS_BUILTIN_OVERFLOW_P 0
+#elif defined __has_builtin
+# define _GL_HAS_BUILTIN_OVERFLOW_P __has_builtin (__builtin_mul_overflow_p)
+#else
+# define _GL_HAS_BUILTIN_OVERFLOW_P (7 <= __GNUC__)
+#endif
+
+/* The _GL*_OVERFLOW macros have the same restrictions as the
+   *_RANGE_OVERFLOW macros, except that they do not assume that operands
+   (e.g., A and B) have the same type as MIN and MAX.  Instead, they assume
+   that the result (e.g., A + B) has that type.  */
+#if _GL_HAS_BUILTIN_OVERFLOW_P
+# define _GL_ADD_OVERFLOW(a, b, min, max)                               \
+   __builtin_add_overflow_p (a, b, (__typeof__ ((a) + (b))) 0)
+# define _GL_SUBTRACT_OVERFLOW(a, b, min, max)                          \
+   __builtin_sub_overflow_p (a, b, (__typeof__ ((a) - (b))) 0)
+# define _GL_MULTIPLY_OVERFLOW(a, b, min, max)                          \
+   __builtin_mul_overflow_p (a, b, (__typeof__ ((a) * (b))) 0)
+#else
+# define _GL_ADD_OVERFLOW(a, b, min, max)                                \
+   ((min) < 0 ? INT_ADD_RANGE_OVERFLOW (a, b, min, max)                  \
+    : (a) < 0 ? (b) <= (a) + (b)                                         \
+    : (b) < 0 ? (a) <= (a) + (b)                                         \
+    : (a) + (b) < (b))
+# define _GL_SUBTRACT_OVERFLOW(a, b, min, max)                           \
+   ((min) < 0 ? INT_SUBTRACT_RANGE_OVERFLOW (a, b, min, max)             \
+    : (a) < 0 ? 1                                                        \
+    : (b) < 0 ? (a) - (b) <= (a)                                         \
+    : (a) < (b))
+# define _GL_MULTIPLY_OVERFLOW(a, b, min, max)                           \
+   (((min) == 0 && (((a) < 0 && 0 < (b)) || ((b) < 0 && 0 < (a))))       \
+    || INT_MULTIPLY_RANGE_OVERFLOW (a, b, min, max))
+#endif
+#define _GL_DIVIDE_OVERFLOW(a, b, min, max)                             \
+  ((min) < 0 ? (b) == _GL_INT_NEGATE_CONVERT (min, 1) && (a) < - (max)  \
+   : (a) < 0 ? (b) <= (a) + (b) - 1                                     \
+   : (b) < 0 && (a) + (b) <= (a))
+#define _GL_REMAINDER_OVERFLOW(a, b, min, max)                          \
+  ((min) < 0 ? (b) == _GL_INT_NEGATE_CONVERT (min, 1) && (a) < - (max)  \
+   : (a) < 0 ? (a) % (b) != ((max) - (b) + 1) % (b)                     \
+   : (b) < 0 && ! _GL_UNSIGNED_NEG_MULTIPLE (a, b, max))
+
+/* Return a nonzero value if A is a mathematical multiple of B, where
+   A is unsigned, B is negative, and MAX is the maximum value of A's
+   type.  A's type must be the same as (A % B)'s type.  Normally (A %
+   -B == 0) suffices, but things get tricky if -B would overflow.  */
+#define _GL_UNSIGNED_NEG_MULTIPLE(a, b, max)                            \
+  (((b) < -_GL_SIGNED_INT_MAXIMUM (b)                                   \
+    ? (_GL_SIGNED_INT_MAXIMUM (b) == (max)                              \
+       ? (a)                                                            \
+       : (a) % (_GL_INT_CONVERT (a, _GL_SIGNED_INT_MAXIMUM (b)) + 1))   \
+    : (a) % - (b))                                                      \
+   == 0)
+
+/* Check for integer overflow, and report low order bits of answer.
+
+   The INT_<op>_OVERFLOW macros return 1 if the corresponding C operators
+   might not yield numerically correct answers due to arithmetic overflow.
+   The INT_<op>_WRAPV macros compute the low-order bits of the sum,
+   difference, and product of two C integers, and return 1 if these
+   low-order bits are not numerically correct.
+   These macros work correctly on all known practical hosts, and do not rely
+   on undefined behavior due to signed arithmetic overflow.
+
+   Example usage, assuming A and B are long int:
+
+     if (INT_MULTIPLY_OVERFLOW (a, b))
+       printf ("result would overflow\n");
+     else
+       printf ("result is %ld (no overflow)\n", a * b);
+
+   Example usage with WRAPV flavor:
+
+     long int result;
+     bool overflow = INT_MULTIPLY_WRAPV (a, b, &result);
+     printf ("result is %ld (%s)\n", result,
+             overflow ? "after overflow" : "no overflow");
+
+   Restrictions on these macros:
+
+   These macros do not check for all possible numerical problems or
+   undefined or unspecified behavior: they do not check for division
+   by zero, for bad shift counts, or for shifting negative numbers.
+
+   These macros may evaluate their arguments zero or multiple times, so the
+   arguments should not have side effects.
+
+   The WRAPV macros are not constant expressions.  They support only
+   +, binary -, and *.
+
+   Because the WRAPV macros convert the result, they report overflow
+   in different circumstances than the OVERFLOW macros do.  For
+   example, in the typical case with 16-bit 'short' and 32-bit 'int',
+   if A, B and R are all of type 'short' then INT_ADD_OVERFLOW (A, B)
+   returns false because the addition cannot overflow after A and B
+   are converted to 'int', whereas INT_ADD_WRAPV (A, B, &R) returns
+   true or false depending on whether the sum fits into 'short'.
+
+   These macros are tuned for their last input argument being a constant.
+
+   Return 1 if the integer expressions A * B, A - B, -A, A * B, A / B,
+   A % B, and A << B would overflow, respectively.  */
+
+#define INT_ADD_OVERFLOW(a, b) \
+  _GL_BINARY_OP_OVERFLOW (a, b, _GL_ADD_OVERFLOW)
+#define INT_SUBTRACT_OVERFLOW(a, b) \
+  _GL_BINARY_OP_OVERFLOW (a, b, _GL_SUBTRACT_OVERFLOW)
+#if _GL_HAS_BUILTIN_OVERFLOW_P
+# define INT_NEGATE_OVERFLOW(a) INT_SUBTRACT_OVERFLOW (0, a)
+#else
+# define INT_NEGATE_OVERFLOW(a) \
+   INT_NEGATE_RANGE_OVERFLOW (a, _GL_INT_MINIMUM (a), _GL_INT_MAXIMUM (a))
+#endif
+#define INT_MULTIPLY_OVERFLOW(a, b) \
+  _GL_BINARY_OP_OVERFLOW (a, b, _GL_MULTIPLY_OVERFLOW)
+#define INT_DIVIDE_OVERFLOW(a, b) \
+  _GL_BINARY_OP_OVERFLOW (a, b, _GL_DIVIDE_OVERFLOW)
+#define INT_REMAINDER_OVERFLOW(a, b) \
+  _GL_BINARY_OP_OVERFLOW (a, b, _GL_REMAINDER_OVERFLOW)
+#define INT_LEFT_SHIFT_OVERFLOW(a, b) \
+  INT_LEFT_SHIFT_RANGE_OVERFLOW (a, b, \
+                                 _GL_INT_MINIMUM (a), _GL_INT_MAXIMUM (a))
+
+/* Return 1 if the expression A <op> B would overflow,
+   where OP_RESULT_OVERFLOW (A, B, MIN, MAX) does the actual test,
+   assuming MIN and MAX are the minimum and maximum for the result type.
+   Arguments should be free of side effects.  */
+#define _GL_BINARY_OP_OVERFLOW(a, b, op_result_overflow)        \
+  op_result_overflow (a, b,                                     \
+                      _GL_INT_MINIMUM (_GL_INT_CONVERT (a, b)), \
+                      _GL_INT_MAXIMUM (_GL_INT_CONVERT (a, b)))
+
+/* Store the low-order bits of A + B, A - B, A * B, respectively, into *R.
+   Return 1 if the result overflows.  See above for restrictions.  */
+#if _GL_HAS_BUILTIN_ADD_OVERFLOW
+# define INT_ADD_WRAPV(a, b, r) __builtin_add_overflow (a, b, r)
+# define INT_SUBTRACT_WRAPV(a, b, r) __builtin_sub_overflow (a, b, r)
+#else
+# define INT_ADD_WRAPV(a, b, r) \
+   _GL_INT_OP_WRAPV (a, b, r, +, _GL_INT_ADD_RANGE_OVERFLOW)
+# define INT_SUBTRACT_WRAPV(a, b, r) \
+   _GL_INT_OP_WRAPV (a, b, r, -, _GL_INT_SUBTRACT_RANGE_OVERFLOW)
+#endif
+#if _GL_HAS_BUILTIN_MUL_OVERFLOW
+# if ((9 < __GNUC__ + (3 <= __GNUC_MINOR__) \
+       || (__GNUC__ == 8 && 4 <= __GNUC_MINOR__)) \
+      && !defined __ICC)
+#  define INT_MULTIPLY_WRAPV(a, b, r) __builtin_mul_overflow (a, b, r)
+# else
+   /* Work around GCC bug 91450.  */
+#  define INT_MULTIPLY_WRAPV(a, b, r) \
+    ((!_GL_SIGNED_TYPE_OR_EXPR (*(r)) && EXPR_SIGNED (a) && EXPR_SIGNED (b) \
+      && _GL_INT_MULTIPLY_RANGE_OVERFLOW (a, b, 0, (__typeof__ (*(r))) -1)) \
+     ? ((void) __builtin_mul_overflow (a, b, r), 1) \
+     : __builtin_mul_overflow (a, b, r))
+# endif
+#else
+# define INT_MULTIPLY_WRAPV(a, b, r) \
+   _GL_INT_OP_WRAPV (a, b, r, *, _GL_INT_MULTIPLY_RANGE_OVERFLOW)
+#endif
+
+/* Nonzero if this compiler has GCC bug 68193 or Clang bug 25390.  See:
+   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68193
+   https://llvm.org/bugs/show_bug.cgi?id=25390
+   For now, assume all versions of GCC-like compilers generate bogus
+   warnings for _Generic.  This matters only for compilers that
+   lack relevant builtins.  */
+#if __GNUC__ || defined __clang__
+# define _GL__GENERIC_BOGUS 1
+#else
+# define _GL__GENERIC_BOGUS 0
+#endif
+
+/* Store the low-order bits of A <op> B into *R, where OP specifies
+   the operation and OVERFLOW the overflow predicate.  Return 1 if the
+   result overflows.  See above for restrictions.  */
+#if 201112 <= __STDC_VERSION__ && !_GL__GENERIC_BOGUS
+# define _GL_INT_OP_WRAPV(a, b, r, op, overflow) \
+   (_Generic \
+    (*(r), \
+     signed char: \
+       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
+                        signed char, SCHAR_MIN, SCHAR_MAX), \
+     unsigned char: \
+       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
+                        unsigned char, 0, UCHAR_MAX), \
+     short int: \
+       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
+                        short int, SHRT_MIN, SHRT_MAX), \
+     unsigned short int: \
+       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
+                        unsigned short int, 0, USHRT_MAX), \
+     int: \
+       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
+                        int, INT_MIN, INT_MAX), \
+     unsigned int: \
+       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
+                        unsigned int, 0, UINT_MAX), \
+     long int: \
+       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
+                        long int, LONG_MIN, LONG_MAX), \
+     unsigned long int: \
+       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
+                        unsigned long int, 0, ULONG_MAX), \
+     long long int: \
+       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long long int, \
+                        long long int, LLONG_MIN, LLONG_MAX), \
+     unsigned long long int: \
+       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long long int, \
+                        unsigned long long int, 0, ULLONG_MAX)))
+#else
+/* Store the low-order bits of A <op> B into *R, where OP specifies
+   the operation and OVERFLOW the overflow predicate.  If *R is
+   signed, its type is ST with bounds SMIN..SMAX; otherwise its type
+   is UT with bounds U..UMAX.  ST and UT are narrower than int.
+   Return 1 if the result overflows.  See above for restrictions.  */
+# if _GL_HAVE___TYPEOF__
+#  define _GL_INT_OP_WRAPV_SMALLISH(a,b,r,op,overflow,st,smin,smax,ut,umax) \
+    (TYPE_SIGNED (__typeof__ (*(r))) \
+     ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, st, smin, smax) \
+     : _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, ut, 0, umax))
+# else
+#  define _GL_INT_OP_WRAPV_SMALLISH(a,b,r,op,overflow,st,smin,smax,ut,umax) \
+    (overflow (a, b, smin, smax) \
+     ? (overflow (a, b, 0, umax) \
+        ? (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a,b,op,unsigned,st), 1) \
+        : (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a,b,op,unsigned,st)) < 0) \
+     : (overflow (a, b, 0, umax) \
+        ? (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a,b,op,unsigned,st)) >= 0 \
+        : (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a,b,op,unsigned,st), 0)))
+# endif
+
+# define _GL_INT_OP_WRAPV(a, b, r, op, overflow) \
+   (sizeof *(r) == sizeof (signed char) \
+    ? _GL_INT_OP_WRAPV_SMALLISH (a, b, r, op, overflow, \
+                                 signed char, SCHAR_MIN, SCHAR_MAX, \
+                                 unsigned char, UCHAR_MAX) \
+    : sizeof *(r) == sizeof (short int) \
+    ? _GL_INT_OP_WRAPV_SMALLISH (a, b, r, op, overflow, \
+                                 short int, SHRT_MIN, SHRT_MAX, \
+                                 unsigned short int, USHRT_MAX) \
+    : sizeof *(r) == sizeof (int) \
+    ? (EXPR_SIGNED (*(r)) \
+       ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
+                          int, INT_MIN, INT_MAX) \
+       : _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
+                          unsigned int, 0, UINT_MAX)) \
+    : _GL_INT_OP_WRAPV_LONGISH(a, b, r, op, overflow))
+# ifdef LLONG_MAX
+#  define _GL_INT_OP_WRAPV_LONGISH(a, b, r, op, overflow) \
+    (sizeof *(r) == sizeof (long int) \
+     ? (EXPR_SIGNED (*(r)) \
+        ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
+                           long int, LONG_MIN, LONG_MAX) \
+        : _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
+                           unsigned long int, 0, ULONG_MAX)) \
+     : (EXPR_SIGNED (*(r)) \
+        ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long long int, \
+                           long long int, LLONG_MIN, LLONG_MAX) \
+        : _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long long int, \
+                           unsigned long long int, 0, ULLONG_MAX)))
+# else
+#  define _GL_INT_OP_WRAPV_LONGISH(a, b, r, op, overflow) \
+    (EXPR_SIGNED (*(r)) \
+     ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
+                        long int, LONG_MIN, LONG_MAX) \
+     : _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
+                        unsigned long int, 0, ULONG_MAX))
+# endif
+#endif
+
+/* Store the low-order bits of A <op> B into *R, where the operation
+   is given by OP.  Use the unsigned type UT for calculation to avoid
+   overflow problems.  *R's type is T, with extrema TMIN and TMAX.
+   T must be a signed integer type.  Return 1 if the result overflows.  */
+#define _GL_INT_OP_CALC(a, b, r, op, overflow, ut, t, tmin, tmax) \
+  (overflow (a, b, tmin, tmax) \
+   ? (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t), 1) \
+   : (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t), 0))
+
+/* Return the low-order bits of A <op> B, where the operation is given
+   by OP.  Use the unsigned type UT for calculation to avoid undefined
+   behavior on signed integer overflow, and convert the result to type T.
+   UT is at least as wide as T and is no narrower than unsigned int,
+   T is two's complement, and there is no padding or trap representations.
+   Assume that converting UT to T yields the low-order bits, as is
+   done in all known two's-complement C compilers.  E.g., see:
+   https://gcc.gnu.org/onlinedocs/gcc/Integers-implementation.html
+
+   According to the C standard, converting UT to T yields an
+   implementation-defined result or signal for values outside T's
+   range.  However, code that works around this theoretical problem
+   runs afoul of a compiler bug in Oracle Studio 12.3 x86.  See:
+   https://lists.gnu.org/r/bug-gnulib/2017-04/msg00049.html
+   As the compiler bug is real, don't try to work around the
+   theoretical problem.  */
+
+#define _GL_INT_OP_WRAPV_VIA_UNSIGNED(a, b, op, ut, t) \
+  ((t) ((ut) (a) op (ut) (b)))
+
+/* Return true if the numeric values A + B, A - B, A * B fall outside
+   the range TMIN..TMAX.  Arguments should be integer expressions
+   without side effects.  TMIN should be signed and nonpositive.
+   TMAX should be positive, and should be signed unless TMIN is zero.  */
+#define _GL_INT_ADD_RANGE_OVERFLOW(a, b, tmin, tmax) \
+  ((b) < 0 \
+   ? (((tmin) \
+       ? ((EXPR_SIGNED (_GL_INT_CONVERT (a, (tmin) - (b))) || (b) < (tmin)) \
+          && (a) < (tmin) - (b)) \
+       : (a) <= -1 - (b)) \
+      || ((EXPR_SIGNED (a) ? 0 <= (a) : (tmax) < (a)) && (tmax) < (a) + (b))) \
+   : (a) < 0 \
+   ? (((tmin) \
+       ? ((EXPR_SIGNED (_GL_INT_CONVERT (b, (tmin) - (a))) || (a) < (tmin)) \
+          && (b) < (tmin) - (a)) \
+       : (b) <= -1 - (a)) \
+      || ((EXPR_SIGNED (_GL_INT_CONVERT (a, b)) || (tmax) < (b)) \
+          && (tmax) < (a) + (b))) \
+   : (tmax) < (b) || (tmax) - (b) < (a))
+#define _GL_INT_SUBTRACT_RANGE_OVERFLOW(a, b, tmin, tmax) \
+  (((a) < 0) == ((b) < 0) \
+   ? ((a) < (b) \
+      ? !(tmin) || -1 - (tmin) < (b) - (a) - 1 \
+      : (tmax) < (a) - (b)) \
+   : (a) < 0 \
+   ? ((!EXPR_SIGNED (_GL_INT_CONVERT ((a) - (tmin), b)) && (a) - (tmin) < 0) \
+      || (a) - (tmin) < (b)) \
+   : ((! (EXPR_SIGNED (_GL_INT_CONVERT (tmax, b)) \
+          && EXPR_SIGNED (_GL_INT_CONVERT ((tmax) + (b), a))) \
+       && (tmax) <= -1 - (b)) \
+      || (tmax) + (b) < (a)))
+#define _GL_INT_MULTIPLY_RANGE_OVERFLOW(a, b, tmin, tmax) \
+  ((b) < 0 \
+   ? ((a) < 0 \
+      ? (EXPR_SIGNED (_GL_INT_CONVERT (tmax, b)) \
+         ? (a) < (tmax) / (b) \
+         : ((INT_NEGATE_OVERFLOW (b) \
+             ? _GL_INT_CONVERT (b, tmax) >> (TYPE_WIDTH (+ (b)) - 1) \
+             : (tmax) / -(b)) \
+            <= -1 - (a))) \
+      : INT_NEGATE_OVERFLOW (_GL_INT_CONVERT (b, tmin)) && (b) == -1 \
+      ? (EXPR_SIGNED (a) \
+         ? 0 < (a) + (tmin) \
+         : 0 < (a) && -1 - (tmin) < (a) - 1) \
+      : (tmin) / (b) < (a)) \
+   : (b) == 0 \
+   ? 0 \
+   : ((a) < 0 \
+      ? (INT_NEGATE_OVERFLOW (_GL_INT_CONVERT (a, tmin)) && (a) == -1 \
+         ? (EXPR_SIGNED (b) ? 0 < (b) + (tmin) : -1 - (tmin) < (b) - 1) \
+         : (tmin) / (a) < (b)) \
+      : (tmax) / (b) < (a)))
+
+/* The following macros compute A + B, A - B, and A * B, respectively.
+   If no overflow occurs, they set *R to the result and return 1;
+   otherwise, they return 0 and may modify *R.
+
+   Example usage:
+
+     long int result;
+     if (INT_ADD_OK (a, b, &result))
+       printf ("result is %ld\n", result);
+     else
+       printf ("overflow\n");
+
+   A, B, and *R should be integers; they need not be the same type,
+   and they need not be all signed or all unsigned.
+
+   These macros work correctly on all known practical hosts, and do not rely
+   on undefined behavior due to signed arithmetic overflow.
+
+   These macros are not constant expressions.
+
+   These macros may evaluate their arguments zero or multiple times, so the
+   arguments should not have side effects.
+
+   These macros are tuned for B being a constant.  */
+
+#define INT_ADD_OK(a, b, r) ! INT_ADD_WRAPV (a, b, r)
+#define INT_SUBTRACT_OK(a, b, r) ! INT_SUBTRACT_WRAPV (a, b, r)
+#define INT_MULTIPLY_OK(a, b, r) ! INT_MULTIPLY_WRAPV (a, b, r)
+
+#endif /* _GL_INTPROPS_H */
diff --git a/src/grep/lib/inttypes.in.h b/src/grep/lib/inttypes.in.h
new file mode 100644
index 0000000..41cb422
--- /dev/null
+++ b/src/grep/lib/inttypes.in.h
@@ -0,0 +1,1002 @@
+/* Copyright (C) 2006-2021 Free Software Foundation, Inc.
+   Written by Paul Eggert, Bruno Haible, Derek Price.
+   This file is part of gnulib.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/*
+ * ISO C 99 <inttypes.h> for platforms that lack it.
+ * <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/inttypes.h.html>
+ */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* Include the original <inttypes.h> if it exists, and if this file
+   has not been included yet or if this file includes gnulib stdint.h
+   which in turn includes this file.
+   The include_next requires a split double-inclusion guard.  */
+#if ! defined INTTYPES_H || defined _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H
+# if @HAVE_INTTYPES_H@
+
+   /* Some pre-C++11 <stdint.h> implementations need this.  */
+#  if defined __cplusplus && ! defined __STDC_FORMAT_MACROS
+#   define __STDC_FORMAT_MACROS 1
+#  endif
+
+#  @INCLUDE_NEXT@ @NEXT_INTTYPES_H@
+
+#  define _GL_FINISHED_INCLUDING_SYSTEM_INTTYPES_H
+# endif
+#endif
+
+#if ! defined INTTYPES_H && ! defined _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H
+#define INTTYPES_H
+
+/* Include <stdint.h> or the gnulib replacement.
+   But avoid namespace pollution on glibc systems.  */
+#ifndef __GLIBC__
+# include <stdint.h>
+#endif
+/* Get CHAR_BIT, INT_MAX, LONG_MAX, etc.  */
+#include <limits.h>
+/* On mingw, __USE_MINGW_ANSI_STDIO only works if <stdio.h> is also included */
+#if defined _WIN32 && ! defined __CYGWIN__
+# include <stdio.h>
+#endif
+
+#if !(INT_MAX == 0x7fffffff && INT_MIN + INT_MAX == -1)
+# error "This file assumes that 'int' is 32-bit two's complement. Please report your platform and compiler to <bug-gnulib@gnu.org>."
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+/* 7.8.1 Macros for format specifiers */
+
+#if defined _TNS_R_TARGET
+   /* Tandem NonStop R series and compatible platforms released before
+      July 2005 support %Ld but not %lld.  */
+# define _LONG_LONG_FORMAT_PREFIX "L"
+#else
+# define _LONG_LONG_FORMAT_PREFIX "ll"
+#endif
+
+#if !defined PRId8
+# ifdef INT8_MAX
+#  define PRId8 "d"
+# endif
+#endif
+#if !defined PRIi8
+# ifdef INT8_MAX
+#  define PRIi8 "i"
+# endif
+#endif
+#if !defined PRIo8
+# ifdef UINT8_MAX
+#  define PRIo8 "o"
+# endif
+#endif
+#if !defined PRIu8
+# ifdef UINT8_MAX
+#  define PRIu8 "u"
+# endif
+#endif
+#if !defined PRIx8
+# ifdef UINT8_MAX
+#  define PRIx8 "x"
+# endif
+#endif
+#if !defined PRIX8
+# ifdef UINT8_MAX
+#  define PRIX8 "X"
+# endif
+#endif
+#if !defined PRId16
+# ifdef INT16_MAX
+#  define PRId16 "d"
+# endif
+#endif
+#if !defined PRIi16
+# ifdef INT16_MAX
+#  define PRIi16 "i"
+# endif
+#endif
+#if !defined PRIo16
+# ifdef UINT16_MAX
+#  define PRIo16 "o"
+# endif
+#endif
+#if !defined PRIu16
+# ifdef UINT16_MAX
+#  define PRIu16 "u"
+# endif
+#endif
+#if !defined PRIx16
+# ifdef UINT16_MAX
+#  define PRIx16 "x"
+# endif
+#endif
+#if !defined PRIX16
+# ifdef UINT16_MAX
+#  define PRIX16 "X"
+# endif
+#endif
+#if !defined PRId32
+# ifdef INT32_MAX
+#  define PRId32 "d"
+# endif
+#endif
+#if !defined PRIi32
+# ifdef INT32_MAX
+#  define PRIi32 "i"
+# endif
+#endif
+#if !defined PRIo32
+# ifdef UINT32_MAX
+#  define PRIo32 "o"
+# endif
+#endif
+#if !defined PRIu32
+# ifdef UINT32_MAX
+#  define PRIu32 "u"
+# endif
+#endif
+#if !defined PRIx32
+# ifdef UINT32_MAX
+#  define PRIx32 "x"
+# endif
+#endif
+#if !defined PRIX32
+# ifdef UINT32_MAX
+#  define PRIX32 "X"
+# endif
+#endif
+#ifdef INT64_MAX
+# if (@APPLE_UNIVERSAL_BUILD@ ? defined _LP64 : @INT64_MAX_EQ_LONG_MAX@)
+#  define _PRI64_PREFIX "l"
+# elif defined _MSC_VER || defined __MINGW32__
+#  define _PRI64_PREFIX "I64"
+# elif LONG_MAX >> 30 == 1
+#  define _PRI64_PREFIX _LONG_LONG_FORMAT_PREFIX
+# endif
+# if !defined PRId64
+#  define PRId64 _PRI64_PREFIX "d"
+# endif
+# if !defined PRIi64
+#  define PRIi64 _PRI64_PREFIX "i"
+# endif
+#endif
+#ifdef UINT64_MAX
+# if (@APPLE_UNIVERSAL_BUILD@ ? defined _LP64 : @UINT64_MAX_EQ_ULONG_MAX@)
+#  define _PRIu64_PREFIX "l"
+# elif defined _MSC_VER || defined __MINGW32__
+#  define _PRIu64_PREFIX "I64"
+# elif ULONG_MAX >> 31 == 1
+#  define _PRIu64_PREFIX _LONG_LONG_FORMAT_PREFIX
+# endif
+# if !defined PRIo64
+#  define PRIo64 _PRIu64_PREFIX "o"
+# endif
+# if !defined PRIu64
+#  define PRIu64 _PRIu64_PREFIX "u"
+# endif
+# if !defined PRIx64
+#  define PRIx64 _PRIu64_PREFIX "x"
+# endif
+# if !defined PRIX64
+#  define PRIX64 _PRIu64_PREFIX "X"
+# endif
+#endif
+
+#if !defined PRIdLEAST8
+# define PRIdLEAST8 "d"
+#endif
+#if !defined PRIiLEAST8
+# define PRIiLEAST8 "i"
+#endif
+#if !defined PRIoLEAST8
+# define PRIoLEAST8 "o"
+#endif
+#if !defined PRIuLEAST8
+# define PRIuLEAST8 "u"
+#endif
+#if !defined PRIxLEAST8
+# define PRIxLEAST8 "x"
+#endif
+#if !defined PRIXLEAST8
+# define PRIXLEAST8 "X"
+#endif
+#if !defined PRIdLEAST16
+# define PRIdLEAST16 "d"
+#endif
+#if !defined PRIiLEAST16
+# define PRIiLEAST16 "i"
+#endif
+#if !defined PRIoLEAST16
+# define PRIoLEAST16 "o"
+#endif
+#if !defined PRIuLEAST16
+# define PRIuLEAST16 "u"
+#endif
+#if !defined PRIxLEAST16
+# define PRIxLEAST16 "x"
+#endif
+#if !defined PRIXLEAST16
+# define PRIXLEAST16 "X"
+#endif
+#if !defined PRIdLEAST32
+# define PRIdLEAST32 "d"
+#endif
+#if !defined PRIiLEAST32
+# define PRIiLEAST32 "i"
+#endif
+#if !defined PRIoLEAST32
+# define PRIoLEAST32 "o"
+#endif
+#if !defined PRIuLEAST32
+# define PRIuLEAST32 "u"
+#endif
+#if !defined PRIxLEAST32
+# define PRIxLEAST32 "x"
+#endif
+#if !defined PRIXLEAST32
+# define PRIXLEAST32 "X"
+#endif
+#ifdef INT64_MAX
+# if !defined PRIdLEAST64
+#  define PRIdLEAST64 PRId64
+# endif
+# if !defined PRIiLEAST64
+#  define PRIiLEAST64 PRIi64
+# endif
+#endif
+#ifdef UINT64_MAX
+# if !defined PRIoLEAST64
+#  define PRIoLEAST64 PRIo64
+# endif
+# if !defined PRIuLEAST64
+#  define PRIuLEAST64 PRIu64
+# endif
+# if !defined PRIxLEAST64
+#  define PRIxLEAST64 PRIx64
+# endif
+# if !defined PRIXLEAST64
+#  define PRIXLEAST64 PRIX64
+# endif
+#endif
+
+#if !defined PRIdFAST8
+# if INT_FAST8_MAX > INT32_MAX
+#  define PRIdFAST8 PRId64
+# else
+#  define PRIdFAST8 "d"
+# endif
+#endif
+#if !defined PRIiFAST8
+# if INT_FAST8_MAX > INT32_MAX
+#  define PRIiFAST8 PRIi64
+# else
+#  define PRIiFAST8 "i"
+# endif
+#endif
+#if !defined PRIoFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define PRIoFAST8 PRIo64
+# else
+#  define PRIoFAST8 "o"
+# endif
+#endif
+#if !defined PRIuFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define PRIuFAST8 PRIu64
+# else
+#  define PRIuFAST8 "u"
+# endif
+#endif
+#if !defined PRIxFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define PRIxFAST8 PRIx64
+# else
+#  define PRIxFAST8 "x"
+# endif
+#endif
+#if !defined PRIXFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define PRIXFAST8 PRIX64
+# else
+#  define PRIXFAST8 "X"
+# endif
+#endif
+#if !defined PRIdFAST16
+# if INT_FAST16_MAX > INT32_MAX
+#  define PRIdFAST16 PRId64
+# else
+#  define PRIdFAST16 "d"
+# endif
+#endif
+#if !defined PRIiFAST16
+# if INT_FAST16_MAX > INT32_MAX
+#  define PRIiFAST16 PRIi64
+# else
+#  define PRIiFAST16 "i"
+# endif
+#endif
+#if !defined PRIoFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define PRIoFAST16 PRIo64
+# else
+#  define PRIoFAST16 "o"
+# endif
+#endif
+#if !defined PRIuFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define PRIuFAST16 PRIu64
+# else
+#  define PRIuFAST16 "u"
+# endif
+#endif
+#if !defined PRIxFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define PRIxFAST16 PRIx64
+# else
+#  define PRIxFAST16 "x"
+# endif
+#endif
+#if !defined PRIXFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define PRIXFAST16 PRIX64
+# else
+#  define PRIXFAST16 "X"
+# endif
+#endif
+#if !defined PRIdFAST32
+# if INT_FAST32_MAX > INT32_MAX
+#  define PRIdFAST32 PRId64
+# else
+#  define PRIdFAST32 "d"
+# endif
+#endif
+#if !defined PRIiFAST32
+# if INT_FAST32_MAX > INT32_MAX
+#  define PRIiFAST32 PRIi64
+# else
+#  define PRIiFAST32 "i"
+# endif
+#endif
+#if !defined PRIoFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define PRIoFAST32 PRIo64
+# else
+#  define PRIoFAST32 "o"
+# endif
+#endif
+#if !defined PRIuFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define PRIuFAST32 PRIu64
+# else
+#  define PRIuFAST32 "u"
+# endif
+#endif
+#if !defined PRIxFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define PRIxFAST32 PRIx64
+# else
+#  define PRIxFAST32 "x"
+# endif
+#endif
+#if !defined PRIXFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define PRIXFAST32 PRIX64
+# else
+#  define PRIXFAST32 "X"
+# endif
+#endif
+#ifdef INT64_MAX
+# if !defined PRIdFAST64
+#  define PRIdFAST64 PRId64
+# endif
+# if !defined PRIiFAST64
+#  define PRIiFAST64 PRIi64
+# endif
+#endif
+#ifdef UINT64_MAX
+# if !defined PRIoFAST64
+#  define PRIoFAST64 PRIo64
+# endif
+# if !defined PRIuFAST64
+#  define PRIuFAST64 PRIu64
+# endif
+# if !defined PRIxFAST64
+#  define PRIxFAST64 PRIx64
+# endif
+# if !defined PRIXFAST64
+#  define PRIXFAST64 PRIX64
+# endif
+#endif
+
+#if !defined PRIdMAX
+# if @INT32_MAX_LT_INTMAX_MAX@
+#  define PRIdMAX PRId64
+# else
+#  define PRIdMAX "ld"
+# endif
+#endif
+#if !defined PRIiMAX
+# if @INT32_MAX_LT_INTMAX_MAX@
+#  define PRIiMAX PRIi64
+# else
+#  define PRIiMAX "li"
+# endif
+#endif
+#if !defined PRIoMAX
+# if @UINT32_MAX_LT_UINTMAX_MAX@
+#  define PRIoMAX PRIo64
+# else
+#  define PRIoMAX "lo"
+# endif
+#endif
+#if !defined PRIuMAX
+# if @UINT32_MAX_LT_UINTMAX_MAX@
+#  define PRIuMAX PRIu64
+# else
+#  define PRIuMAX "lu"
+# endif
+#endif
+#if !defined PRIxMAX
+# if @UINT32_MAX_LT_UINTMAX_MAX@
+#  define PRIxMAX PRIx64
+# else
+#  define PRIxMAX "lx"
+# endif
+#endif
+#if !defined PRIXMAX
+# if @UINT32_MAX_LT_UINTMAX_MAX@
+#  define PRIXMAX PRIX64
+# else
+#  define PRIXMAX "lX"
+# endif
+#endif
+
+#if !defined PRIdPTR
+# ifdef INTPTR_MAX
+#  define PRIdPTR @PRIPTR_PREFIX@ "d"
+# endif
+#endif
+#if !defined PRIiPTR
+# ifdef INTPTR_MAX
+#  define PRIiPTR @PRIPTR_PREFIX@ "i"
+# endif
+#endif
+#if !defined PRIoPTR
+# ifdef UINTPTR_MAX
+#  define PRIoPTR @PRIPTR_PREFIX@ "o"
+# endif
+#endif
+#if !defined PRIuPTR
+# ifdef UINTPTR_MAX
+#  define PRIuPTR @PRIPTR_PREFIX@ "u"
+# endif
+#endif
+#if !defined PRIxPTR
+# ifdef UINTPTR_MAX
+#  define PRIxPTR @PRIPTR_PREFIX@ "x"
+# endif
+#endif
+#if !defined PRIXPTR
+# ifdef UINTPTR_MAX
+#  define PRIXPTR @PRIPTR_PREFIX@ "X"
+# endif
+#endif
+
+#if !defined SCNd8
+# ifdef INT8_MAX
+#  define SCNd8 "hhd"
+# endif
+#endif
+#if !defined SCNi8
+# ifdef INT8_MAX
+#  define SCNi8 "hhi"
+# endif
+#endif
+#if !defined SCNo8
+# ifdef UINT8_MAX
+#  define SCNo8 "hho"
+# endif
+#endif
+#if !defined SCNu8
+# ifdef UINT8_MAX
+#  define SCNu8 "hhu"
+# endif
+#endif
+#if !defined SCNx8
+# ifdef UINT8_MAX
+#  define SCNx8 "hhx"
+# endif
+#endif
+#if !defined SCNd16
+# ifdef INT16_MAX
+#  define SCNd16 "hd"
+# endif
+#endif
+#if !defined SCNi16
+# ifdef INT16_MAX
+#  define SCNi16 "hi"
+# endif
+#endif
+#if !defined SCNo16
+# ifdef UINT16_MAX
+#  define SCNo16 "ho"
+# endif
+#endif
+#if !defined SCNu16
+# ifdef UINT16_MAX
+#  define SCNu16 "hu"
+# endif
+#endif
+#if !defined SCNx16
+# ifdef UINT16_MAX
+#  define SCNx16 "hx"
+# endif
+#endif
+#if !defined SCNd32
+# ifdef INT32_MAX
+#  define SCNd32 "d"
+# endif
+#endif
+#if !defined SCNi32
+# ifdef INT32_MAX
+#  define SCNi32 "i"
+# endif
+#endif
+#if !defined SCNo32
+# ifdef UINT32_MAX
+#  define SCNo32 "o"
+# endif
+#endif
+#if !defined SCNu32
+# ifdef UINT32_MAX
+#  define SCNu32 "u"
+# endif
+#endif
+#if !defined SCNx32
+# ifdef UINT32_MAX
+#  define SCNx32 "x"
+# endif
+#endif
+#ifdef INT64_MAX
+# if (@APPLE_UNIVERSAL_BUILD@ ? defined _LP64 : @INT64_MAX_EQ_LONG_MAX@)
+#  define _SCN64_PREFIX "l"
+# elif defined _MSC_VER || defined __MINGW32__
+#  define _SCN64_PREFIX "I64"
+# elif LONG_MAX >> 30 == 1
+#  define _SCN64_PREFIX _LONG_LONG_FORMAT_PREFIX
+# endif
+# if !defined SCNd64
+#  define SCNd64 _SCN64_PREFIX "d"
+# endif
+# if !defined SCNi64
+#  define SCNi64 _SCN64_PREFIX "i"
+# endif
+#endif
+#ifdef UINT64_MAX
+# if (@APPLE_UNIVERSAL_BUILD@ ? defined _LP64 : @UINT64_MAX_EQ_ULONG_MAX@)
+#  define _SCNu64_PREFIX "l"
+# elif defined _MSC_VER || defined __MINGW32__
+#  define _SCNu64_PREFIX "I64"
+# elif ULONG_MAX >> 31 == 1
+#  define _SCNu64_PREFIX _LONG_LONG_FORMAT_PREFIX
+# endif
+# if !defined SCNo64
+#  define SCNo64 _SCNu64_PREFIX "o"
+# endif
+# if !defined SCNu64
+#  define SCNu64 _SCNu64_PREFIX "u"
+# endif
+# if !defined SCNx64
+#  define SCNx64 _SCNu64_PREFIX "x"
+# endif
+#endif
+
+#if !defined SCNdLEAST8
+# define SCNdLEAST8 "hhd"
+#endif
+#if !defined SCNiLEAST8
+# define SCNiLEAST8 "hhi"
+#endif
+#if !defined SCNoLEAST8
+# define SCNoLEAST8 "hho"
+#endif
+#if !defined SCNuLEAST8
+# define SCNuLEAST8 "hhu"
+#endif
+#if !defined SCNxLEAST8
+# define SCNxLEAST8 "hhx"
+#endif
+#if !defined SCNdLEAST16
+# define SCNdLEAST16 "hd"
+#endif
+#if !defined SCNiLEAST16
+# define SCNiLEAST16 "hi"
+#endif
+#if !defined SCNoLEAST16
+# define SCNoLEAST16 "ho"
+#endif
+#if !defined SCNuLEAST16
+# define SCNuLEAST16 "hu"
+#endif
+#if !defined SCNxLEAST16
+# define SCNxLEAST16 "hx"
+#endif
+#if !defined SCNdLEAST32
+# define SCNdLEAST32 "d"
+#endif
+#if !defined SCNiLEAST32
+# define SCNiLEAST32 "i"
+#endif
+#if !defined SCNoLEAST32
+# define SCNoLEAST32 "o"
+#endif
+#if !defined SCNuLEAST32
+# define SCNuLEAST32 "u"
+#endif
+#if !defined SCNxLEAST32
+# define SCNxLEAST32 "x"
+#endif
+#ifdef INT64_MAX
+# if !defined SCNdLEAST64
+#  define SCNdLEAST64 SCNd64
+# endif
+# if !defined SCNiLEAST64
+#  define SCNiLEAST64 SCNi64
+# endif
+#endif
+#ifdef UINT64_MAX
+# if !defined SCNoLEAST64
+#  define SCNoLEAST64 SCNo64
+# endif
+# if !defined SCNuLEAST64
+#  define SCNuLEAST64 SCNu64
+# endif
+# if !defined SCNxLEAST64
+#  define SCNxLEAST64 SCNx64
+# endif
+#endif
+
+#if !defined SCNdFAST8
+# if INT_FAST8_MAX > INT32_MAX
+#  define SCNdFAST8 SCNd64
+# elif INT_FAST8_MAX == 0x7fff
+#  define SCNdFAST8 "hd"
+# elif INT_FAST8_MAX == 0x7f
+#  define SCNdFAST8 "hhd"
+# else
+#  define SCNdFAST8 "d"
+# endif
+#endif
+#if !defined SCNiFAST8
+# if INT_FAST8_MAX > INT32_MAX
+#  define SCNiFAST8 SCNi64
+# elif INT_FAST8_MAX == 0x7fff
+#  define SCNiFAST8 "hi"
+# elif INT_FAST8_MAX == 0x7f
+#  define SCNiFAST8 "hhi"
+# else
+#  define SCNiFAST8 "i"
+# endif
+#endif
+#if !defined SCNoFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define SCNoFAST8 SCNo64
+# elif UINT_FAST8_MAX == 0xffff
+#  define SCNoFAST8 "ho"
+# elif UINT_FAST8_MAX == 0xff
+#  define SCNoFAST8 "hho"
+# else
+#  define SCNoFAST8 "o"
+# endif
+#endif
+#if !defined SCNuFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define SCNuFAST8 SCNu64
+# elif UINT_FAST8_MAX == 0xffff
+#  define SCNuFAST8 "hu"
+# elif UINT_FAST8_MAX == 0xff
+#  define SCNuFAST8 "hhu"
+# else
+#  define SCNuFAST8 "u"
+# endif
+#endif
+#if !defined SCNxFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define SCNxFAST8 SCNx64
+# elif UINT_FAST8_MAX == 0xffff
+#  define SCNxFAST8 "hx"
+# elif UINT_FAST8_MAX == 0xff
+#  define SCNxFAST8 "hhx"
+# else
+#  define SCNxFAST8 "x"
+# endif
+#endif
+#if !defined SCNdFAST16
+# if INT_FAST16_MAX > INT32_MAX
+#  define SCNdFAST16 SCNd64
+# elif INT_FAST16_MAX == 0x7fff
+#  define SCNdFAST16 "hd"
+# else
+#  define SCNdFAST16 "d"
+# endif
+#endif
+#if !defined SCNiFAST16
+# if INT_FAST16_MAX > INT32_MAX
+#  define SCNiFAST16 SCNi64
+# elif INT_FAST16_MAX == 0x7fff
+#  define SCNiFAST16 "hi"
+# else
+#  define SCNiFAST16 "i"
+# endif
+#endif
+#if !defined SCNoFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define SCNoFAST16 SCNo64
+# elif UINT_FAST16_MAX == 0xffff
+#  define SCNoFAST16 "ho"
+# else
+#  define SCNoFAST16 "o"
+# endif
+#endif
+#if !defined SCNuFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define SCNuFAST16 SCNu64
+# elif UINT_FAST16_MAX == 0xffff
+#  define SCNuFAST16 "hu"
+# else
+#  define SCNuFAST16 "u"
+# endif
+#endif
+#if !defined SCNxFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define SCNxFAST16 SCNx64
+# elif UINT_FAST16_MAX == 0xffff
+#  define SCNxFAST16 "hx"
+# else
+#  define SCNxFAST16 "x"
+# endif
+#endif
+#if !defined SCNdFAST32
+# if INT_FAST32_MAX > INT32_MAX
+#  define SCNdFAST32 SCNd64
+# else
+#  define SCNdFAST32 "d"
+# endif
+#endif
+#if !defined SCNiFAST32
+# if INT_FAST32_MAX > INT32_MAX
+#  define SCNiFAST32 SCNi64
+# else
+#  define SCNiFAST32 "i"
+# endif
+#endif
+#if !defined SCNoFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define SCNoFAST32 SCNo64
+# else
+#  define SCNoFAST32 "o"
+# endif
+#endif
+#if !defined SCNuFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define SCNuFAST32 SCNu64
+# else
+#  define SCNuFAST32 "u"
+# endif
+#endif
+#if !defined SCNxFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define SCNxFAST32 SCNx64
+# else
+#  define SCNxFAST32 "x"
+# endif
+#endif
+#ifdef INT64_MAX
+# if !defined SCNdFAST64
+#  define SCNdFAST64 SCNd64
+# endif
+# if !defined SCNiFAST64
+#  define SCNiFAST64 SCNi64
+# endif
+#endif
+#ifdef UINT64_MAX
+# if !defined SCNoFAST64
+#  define SCNoFAST64 SCNo64
+# endif
+# if !defined SCNuFAST64
+#  define SCNuFAST64 SCNu64
+# endif
+# if !defined SCNxFAST64
+#  define SCNxFAST64 SCNx64
+# endif
+#endif
+
+#if !defined SCNdMAX
+# if @INT32_MAX_LT_INTMAX_MAX@
+#  define SCNdMAX SCNd64
+# else
+#  define SCNdMAX "ld"
+# endif
+#endif
+#if !defined SCNiMAX
+# if @INT32_MAX_LT_INTMAX_MAX@
+#  define SCNiMAX SCNi64
+# else
+#  define SCNiMAX "li"
+# endif
+#endif
+#if !defined SCNoMAX
+# if @UINT32_MAX_LT_UINTMAX_MAX@
+#  define SCNoMAX SCNo64
+# else
+#  define SCNoMAX "lo"
+# endif
+#endif
+#if !defined SCNuMAX
+# if @UINT32_MAX_LT_UINTMAX_MAX@
+#  define SCNuMAX SCNu64
+# else
+#  define SCNuMAX "lu"
+# endif
+#endif
+#if !defined SCNxMAX
+# if @UINT32_MAX_LT_UINTMAX_MAX@
+#  define SCNxMAX SCNx64
+# else
+#  define SCNxMAX "lx"
+# endif
+#endif
+
+#if !defined SCNdPTR
+# ifdef INTPTR_MAX
+#  define SCNdPTR @PRIPTR_PREFIX@ "d"
+# endif
+#endif
+#if !defined SCNiPTR
+# ifdef INTPTR_MAX
+#  define SCNiPTR @PRIPTR_PREFIX@ "i"
+# endif
+#endif
+#if !defined SCNoPTR
+# ifdef UINTPTR_MAX
+#  define SCNoPTR @PRIPTR_PREFIX@ "o"
+# endif
+#endif
+#if !defined SCNuPTR
+# ifdef UINTPTR_MAX
+#  define SCNuPTR @PRIPTR_PREFIX@ "u"
+# endif
+#endif
+#if !defined SCNxPTR
+# ifdef UINTPTR_MAX
+#  define SCNxPTR @PRIPTR_PREFIX@ "x"
+# endif
+#endif
+
+/* 7.8.2 Functions for greatest-width integer types */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if @GNULIB_IMAXABS@
+# if !@HAVE_DECL_IMAXABS@
+extern intmax_t imaxabs (intmax_t);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef imaxabs
+# if HAVE_RAW_DECL_IMAXABS
+_GL_WARN_ON_USE (imaxabs, "imaxabs is unportable - "
+                 "use gnulib module imaxabs for portability");
+# endif
+#endif
+
+#if @GNULIB_IMAXDIV@
+# if !@HAVE_IMAXDIV_T@
+#  if !GNULIB_defined_imaxdiv_t
+typedef struct { intmax_t quot; intmax_t rem; } imaxdiv_t;
+#   define GNULIB_defined_imaxdiv_t 1
+#  endif
+# endif
+# if !@HAVE_DECL_IMAXDIV@
+extern imaxdiv_t imaxdiv (intmax_t, intmax_t);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef imaxdiv
+# if HAVE_RAW_DECL_IMAXDIV
+_GL_WARN_ON_USE (imaxdiv, "imaxdiv is unportable - "
+                 "use gnulib module imaxdiv for portability");
+# endif
+#endif
+
+#if @GNULIB_STRTOIMAX@
+# if @REPLACE_STRTOIMAX@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strtoimax
+#   define strtoimax rpl_strtoimax
+#  endif
+_GL_FUNCDECL_RPL (strtoimax, intmax_t,
+                  (const char *restrict, char **restrict, int)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strtoimax, intmax_t,
+                  (const char *restrict, char **restrict, int));
+# else
+#  if !@HAVE_DECL_STRTOIMAX@
+#   undef strtoimax
+_GL_FUNCDECL_SYS (strtoimax, intmax_t,
+                  (const char *restrict, char **restrict, int)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (strtoimax, intmax_t,
+                  (const char *restrict, char **restrict, int));
+# endif
+_GL_CXXALIASWARN (strtoimax);
+#elif defined GNULIB_POSIXCHECK
+# undef strtoimax
+# if HAVE_RAW_DECL_STRTOIMAX
+_GL_WARN_ON_USE (strtoimax, "strtoimax is unportable - "
+                 "use gnulib module strtoimax for portability");
+# endif
+#endif
+
+#if @GNULIB_STRTOUMAX@
+# if @REPLACE_STRTOUMAX@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strtoumax
+#   define strtoumax rpl_strtoumax
+#  endif
+_GL_FUNCDECL_RPL (strtoumax, uintmax_t,
+                  (const char *restrict, char **restrict, int)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strtoumax, uintmax_t,
+                  (const char *restrict, char **restrict, int));
+# else
+#  if !@HAVE_DECL_STRTOUMAX@
+#   undef strtoumax
+_GL_FUNCDECL_SYS (strtoumax, uintmax_t,
+                  (const char *restrict, char **restrict, int)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (strtoumax, uintmax_t,
+                  (const char *restrict, char **restrict, int));
+# endif
+_GL_CXXALIASWARN (strtoumax);
+#elif defined GNULIB_POSIXCHECK
+# undef strtoumax
+# if HAVE_RAW_DECL_STRTOUMAX
+_GL_WARN_ON_USE (strtoumax, "strtoumax is unportable - "
+                 "use gnulib module strtoumax for portability");
+# endif
+#endif
+
+/* Don't bother defining or declaring wcstoimax and wcstoumax, since
+   wide-character functions like this are hardly ever useful.  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !defined INTTYPES_H && !defined _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H */
diff --git a/src/grep/lib/isatty.c b/src/grep/lib/isatty.c
new file mode 100644
index 0000000..74686d3
--- /dev/null
+++ b/src/grep/lib/isatty.c
@@ -0,0 +1,187 @@
+/* isatty() replacement.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+/* This replacement is enabled on native Windows.  */
+
+#include <errno.h>
+#include <string.h>
+
+/* Get declarations of the Win32 API functions.  */
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+/* Get _get_osfhandle().  */
+#if GNULIB_MSVC_NOTHROW
+# include "msvc-nothrow.h"
+#else
+# include <io.h>
+#endif
+
+/* Don't assume that UNICODE is not defined.  */
+#undef LoadLibrary
+#define LoadLibrary LoadLibraryA
+#undef QueryFullProcessImageName
+#define QueryFullProcessImageName QueryFullProcessImageNameA
+
+#if !(_WIN32_WINNT >= _WIN32_WINNT_VISTA)
+
+/* Avoid warnings from gcc -Wcast-function-type.  */
+# define GetProcAddress \
+   (void *) GetProcAddress
+
+/* GetNamedPipeClientProcessId was introduced only in Windows Vista.  */
+typedef BOOL (WINAPI * GetNamedPipeClientProcessIdFuncType) (HANDLE hPipe,
+                                                             PULONG pClientProcessId);
+static GetNamedPipeClientProcessIdFuncType GetNamedPipeClientProcessIdFunc = NULL;
+/* QueryFullProcessImageName was introduced only in Windows Vista.  */
+typedef BOOL (WINAPI * QueryFullProcessImageNameFuncType) (HANDLE hProcess,
+                                                           DWORD dwFlags,
+                                                           LPSTR lpExeName,
+                                                           PDWORD pdwSize);
+static QueryFullProcessImageNameFuncType QueryFullProcessImageNameFunc = NULL;
+static BOOL initialized = FALSE;
+
+static void
+initialize (void)
+{
+  HMODULE kernel32 = LoadLibrary ("kernel32.dll");
+  if (kernel32 != NULL)
+    {
+      GetNamedPipeClientProcessIdFunc =
+        (GetNamedPipeClientProcessIdFuncType) GetProcAddress (kernel32, "GetNamedPipeClientProcessId");
+      QueryFullProcessImageNameFunc =
+        (QueryFullProcessImageNameFuncType) GetProcAddress (kernel32, "QueryFullProcessImageNameA");
+    }
+  initialized = TRUE;
+}
+
+#else
+
+# define GetNamedPipeClientProcessIdFunc GetNamedPipeClientProcessId
+# define QueryFullProcessImageNameFunc QueryFullProcessImageName
+
+#endif
+
+static BOOL IsConsoleHandle (HANDLE h)
+{
+  DWORD mode;
+  /* GetConsoleMode
+     <https://docs.microsoft.com/en-us/windows/console/getconsolemode> */
+  return GetConsoleMode (h, &mode) != 0;
+}
+
+static BOOL IsCygwinConsoleHandle (HANDLE h)
+{
+  /* A handle to a Cygwin console is in fact a named pipe whose client process
+     and server process is <CYGWIN_INSTALL_DIR>\bin\mintty.exe.  */
+  BOOL result = FALSE;
+  ULONG processId;
+
+#if !(_WIN32_WINNT >= _WIN32_WINNT_VISTA)
+  if (!initialized)
+    initialize ();
+#endif
+
+  /* GetNamedPipeClientProcessId
+     <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getnamedpipeclientprocessid>
+     It requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher.  */
+  if (GetNamedPipeClientProcessIdFunc && QueryFullProcessImageNameFunc
+      && GetNamedPipeClientProcessIdFunc (h, &processId))
+    {
+      /* OpenProcess
+         <https://docs.microsoft.com/en-us/windows/desktop/api/processthreadsapi/nf-processthreadsapi-openprocess> */
+      HANDLE processHandle =
+        OpenProcess (PROCESS_QUERY_LIMITED_INFORMATION, FALSE, processId);
+      if (processHandle != NULL)
+        {
+          char buf[1024];
+          DWORD bufsize = sizeof (buf);
+          /* The file name can be determined through
+             GetProcessImageFileName
+             <https://docs.microsoft.com/en-us/windows/desktop/api/psapi/nf-psapi-getprocessimagefilenamea>
+             or
+             QueryFullProcessImageName
+             <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-queryfullprocessimagenamea>
+             The former returns a file name in non-standard notation (it starts
+             with '\Device\') and may require linking with psapi.dll.
+             The latter is better, but requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA
+             or higher.  */
+          if (QueryFullProcessImageNameFunc (processHandle, 0, buf, &bufsize))
+            {
+              if (strlen (buf) >= 11
+                  && strcmp (buf + strlen (buf) - 11, "\\mintty.exe") == 0)
+                result = TRUE;
+            }
+          CloseHandle (processHandle);
+        }
+    }
+  return result;
+}
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static int
+_isatty_nothrow (int fd)
+{
+  int result;
+
+  TRY_MSVC_INVAL
+    {
+      result = _isatty (fd);
+    }
+  CATCH_MSVC_INVAL
+    {
+      result = 0;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+#else
+# define _isatty_nothrow _isatty
+#endif
+
+/* Determine whether FD refers to a console device.  Return 1 if yes.
+   Return 0 and set errno if no. (ptsname_r relies on the errno value.)  */
+int
+isatty (int fd)
+{
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  if (h == INVALID_HANDLE_VALUE)
+    {
+      errno = EBADF;
+      return 0;
+    }
+  /* _isatty (fd) tests whether GetFileType of the handle is FILE_TYPE_CHAR.
+     But it does not set errno when it returns 0.  */
+  if (_isatty_nothrow (fd))
+    {
+      if (IsConsoleHandle (h))
+        return 1;
+    }
+  if (IsCygwinConsoleHandle (h))
+    return 1;
+  errno = ENOTTY;
+  return 0;
+}
diff --git a/src/grep/lib/isblank.c b/src/grep/lib/isblank.c
new file mode 100644
index 0000000..8984f37
--- /dev/null
+++ b/src/grep/lib/isblank.c
@@ -0,0 +1,33 @@
+/* Test whether a character is a blank.
+
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <ctype.h>
+
+int
+isblank (int c)
+{
+  /* On all known platforms, in all predefined locales, isblank(c) is likely
+     equivalent with  (c == ' ' || c == '\t').  Look at the glibc definition
+     (in glibc/localedata/locales/i18n): The "blank" characters are '\t', ' ',
+     U+1680, U+180E, U+2000..U+2006, U+2008..U+200A, U+205F, U+3000, and none
+     except the first two is present in a common 8-bit encoding.  Therefore
+     the substitute for other platforms is not more complicated than this.  */
+  return (c == ' ' || c == '\t');
+}
diff --git a/src/grep/lib/iswblank.c b/src/grep/lib/iswblank.c
new file mode 100644
index 0000000..55628ec
--- /dev/null
+++ b/src/grep/lib/iswblank.c
@@ -0,0 +1,26 @@
+/* Test wide character for being blank.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wctype.h>
+
+int
+iswblank (wint_t wc)
+{
+  return wc == ' ' || wc == '\t';
+}
diff --git a/src/grep/lib/iswctype-impl.h b/src/grep/lib/iswctype-impl.h
new file mode 100644
index 0000000..c3a2508
--- /dev/null
+++ b/src/grep/lib/iswctype-impl.h
@@ -0,0 +1,22 @@
+/* Test whether a wide character has a given property.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+int
+iswctype (wint_t wc, wctype_t desc)
+{
+  return ((int (*) (wint_t)) desc) (wc);
+}
diff --git a/src/grep/lib/iswctype.c b/src/grep/lib/iswctype.c
new file mode 100644
index 0000000..3e833c5
--- /dev/null
+++ b/src/grep/lib/iswctype.c
@@ -0,0 +1,36 @@
+/* Test whether a wide character has a given property.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wctype.h>
+
+#if GNULIB_defined_wint_t
+
+int
+iswctype (wint_t wc, wctype_t desc)
+# undef iswctype
+{
+  return ((wchar_t) wc == wc ? iswctype ((wchar_t) wc, desc) : 0);
+}
+
+#else
+
+# include "iswctype-impl.h"
+
+#endif
diff --git a/src/grep/lib/iswdigit.c b/src/grep/lib/iswdigit.c
new file mode 100644
index 0000000..8ec9a6e
--- /dev/null
+++ b/src/grep/lib/iswdigit.c
@@ -0,0 +1,26 @@
+/* Test wide character for being a digit.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wctype.h>
+
+int
+iswdigit (wint_t wc)
+{
+  return wc >= '0' && wc <= '9';
+}
diff --git a/src/grep/lib/iswxdigit.c b/src/grep/lib/iswxdigit.c
new file mode 100644
index 0000000..fcdcdba
--- /dev/null
+++ b/src/grep/lib/iswxdigit.c
@@ -0,0 +1,33 @@
+/* Test wide character for being a hexadecimal digit.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wctype.h>
+
+int
+iswxdigit (wint_t wc)
+{
+  return ((wc >= '0' && wc <= '9')
+#if 'A' == 0x41 && 'a' == 0x61
+          /* Optimization, assuming ASCII */
+          || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F')
+#else
+          || (wc >= 'A' && wc <= 'F') || (wc >= 'a' && wc <= 'f')
+#endif
+         );
+}
diff --git a/src/grep/lib/langinfo.in.h b/src/grep/lib/langinfo.in.h
new file mode 100644
index 0000000..4873899
--- /dev/null
+++ b/src/grep/lib/langinfo.in.h
@@ -0,0 +1,222 @@
+/* Substitute for and wrapper around <langinfo.h>.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/*
+ * POSIX <langinfo.h> for platforms that lack it or have an incomplete one.
+ * <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/langinfo.h.html>
+ */
+
+#ifndef _@GUARD_PREFIX@_LANGINFO_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* The include_next requires a split double-inclusion guard.  */
+#if @HAVE_LANGINFO_H@
+# @INCLUDE_NEXT@ @NEXT_LANGINFO_H@
+#endif
+
+#ifndef _@GUARD_PREFIX@_LANGINFO_H
+#define _@GUARD_PREFIX@_LANGINFO_H
+
+
+#if !@HAVE_LANGINFO_H@
+
+/* A platform that lacks <langinfo.h>.  */
+
+/* Assume that it also lacks <nl_types.h> and the nl_item type.  */
+# if !GNULIB_defined_nl_item
+typedef int nl_item;
+#  define GNULIB_defined_nl_item 1
+# endif
+
+/* nl_langinfo items of the LC_CTYPE category */
+# define CODESET     10000
+/* nl_langinfo items of the LC_NUMERIC category */
+# define RADIXCHAR   10001
+# define DECIMAL_POINT RADIXCHAR
+# define THOUSEP     10002
+# define THOUSANDS_SEP THOUSEP
+# define GROUPING    10114
+/* nl_langinfo items of the LC_TIME category */
+# define D_T_FMT     10003
+# define D_FMT       10004
+# define T_FMT       10005
+# define T_FMT_AMPM  10006
+# define AM_STR      10007
+# define PM_STR      10008
+# define DAY_1       10009
+# define DAY_2       (DAY_1 + 1)
+# define DAY_3       (DAY_1 + 2)
+# define DAY_4       (DAY_1 + 3)
+# define DAY_5       (DAY_1 + 4)
+# define DAY_6       (DAY_1 + 5)
+# define DAY_7       (DAY_1 + 6)
+# define ABDAY_1     10016
+# define ABDAY_2     (ABDAY_1 + 1)
+# define ABDAY_3     (ABDAY_1 + 2)
+# define ABDAY_4     (ABDAY_1 + 3)
+# define ABDAY_5     (ABDAY_1 + 4)
+# define ABDAY_6     (ABDAY_1 + 5)
+# define ABDAY_7     (ABDAY_1 + 6)
+# define MON_1       10023
+# define MON_2       (MON_1 + 1)
+# define MON_3       (MON_1 + 2)
+# define MON_4       (MON_1 + 3)
+# define MON_5       (MON_1 + 4)
+# define MON_6       (MON_1 + 5)
+# define MON_7       (MON_1 + 6)
+# define MON_8       (MON_1 + 7)
+# define MON_9       (MON_1 + 8)
+# define MON_10      (MON_1 + 9)
+# define MON_11      (MON_1 + 10)
+# define MON_12      (MON_1 + 11)
+# define ALTMON_1    10200
+# define ALTMON_2    (ALTMON_1 + 1)
+# define ALTMON_3    (ALTMON_1 + 2)
+# define ALTMON_4    (ALTMON_1 + 3)
+# define ALTMON_5    (ALTMON_1 + 4)
+# define ALTMON_6    (ALTMON_1 + 5)
+# define ALTMON_7    (ALTMON_1 + 6)
+# define ALTMON_8    (ALTMON_1 + 7)
+# define ALTMON_9    (ALTMON_1 + 8)
+# define ALTMON_10   (ALTMON_1 + 9)
+# define ALTMON_11   (ALTMON_1 + 10)
+# define ALTMON_12   (ALTMON_1 + 11)
+# define ABMON_1     10035
+# define ABMON_2     (ABMON_1 + 1)
+# define ABMON_3     (ABMON_1 + 2)
+# define ABMON_4     (ABMON_1 + 3)
+# define ABMON_5     (ABMON_1 + 4)
+# define ABMON_6     (ABMON_1 + 5)
+# define ABMON_7     (ABMON_1 + 6)
+# define ABMON_8     (ABMON_1 + 7)
+# define ABMON_9     (ABMON_1 + 8)
+# define ABMON_10    (ABMON_1 + 9)
+# define ABMON_11    (ABMON_1 + 10)
+# define ABMON_12    (ABMON_1 + 11)
+# define ERA         10047
+# define ERA_D_FMT   10048
+# define ERA_D_T_FMT 10049
+# define ERA_T_FMT   10050
+# define ALT_DIGITS  10051
+/* nl_langinfo items of the LC_MONETARY category */
+# define CRNCYSTR    10052
+# define CURRENCY_SYMBOL   CRNCYSTR
+# define INT_CURR_SYMBOL   10100
+# define MON_DECIMAL_POINT 10101
+# define MON_THOUSANDS_SEP 10102
+# define MON_GROUPING      10103
+# define POSITIVE_SIGN     10104
+# define NEGATIVE_SIGN     10105
+# define FRAC_DIGITS       10106
+# define INT_FRAC_DIGITS   10107
+# define P_CS_PRECEDES     10108
+# define N_CS_PRECEDES     10109
+# define P_SEP_BY_SPACE    10110
+# define N_SEP_BY_SPACE    10111
+# define P_SIGN_POSN       10112
+# define N_SIGN_POSN       10113
+/* nl_langinfo items of the LC_MESSAGES category */
+# define YESEXPR     10053
+# define NOEXPR      10054
+
+#else
+
+/* A platform that has <langinfo.h>.  */
+
+# if !@HAVE_LANGINFO_CODESET@
+#  define CODESET     10000
+#  define GNULIB_defined_CODESET 1
+# endif
+
+# if !@HAVE_LANGINFO_T_FMT_AMPM@
+#  define T_FMT_AMPM  10006
+#  define GNULIB_defined_T_FMT_AMPM 1
+# endif
+
+# if !@HAVE_LANGINFO_ALTMON@
+#  define ALTMON_1    10200
+#  define ALTMON_2    (ALTMON_1 + 1)
+#  define ALTMON_3    (ALTMON_1 + 2)
+#  define ALTMON_4    (ALTMON_1 + 3)
+#  define ALTMON_5    (ALTMON_1 + 4)
+#  define ALTMON_6    (ALTMON_1 + 5)
+#  define ALTMON_7    (ALTMON_1 + 6)
+#  define ALTMON_8    (ALTMON_1 + 7)
+#  define ALTMON_9    (ALTMON_1 + 8)
+#  define ALTMON_10   (ALTMON_1 + 9)
+#  define ALTMON_11   (ALTMON_1 + 10)
+#  define ALTMON_12   (ALTMON_1 + 11)
+#  define GNULIB_defined_ALTMON 1
+# endif
+
+# if !@HAVE_LANGINFO_ERA@
+#  define ERA         10047
+#  define ERA_D_FMT   10048
+#  define ERA_D_T_FMT 10049
+#  define ERA_T_FMT   10050
+#  define ALT_DIGITS  10051
+#  define GNULIB_defined_ERA 1
+# endif
+
+# if !@HAVE_LANGINFO_YESEXPR@
+#  define YESEXPR     10053
+#  define NOEXPR      10054
+#  define GNULIB_defined_YESEXPR 1
+# endif
+
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+/* Declare overridden functions.  */
+
+
+/* Return a piece of locale dependent information.
+   Note: The difference between nl_langinfo (CODESET) and locale_charset ()
+   is that the latter normalizes the encoding names to GNU conventions.  */
+
+#if @GNULIB_NL_LANGINFO@
+# if @REPLACE_NL_LANGINFO@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef nl_langinfo
+#   define nl_langinfo rpl_nl_langinfo
+#  endif
+_GL_FUNCDECL_RPL (nl_langinfo, char *, (nl_item item));
+_GL_CXXALIAS_RPL (nl_langinfo, char *, (nl_item item));
+# else
+#  if !@HAVE_NL_LANGINFO@
+_GL_FUNCDECL_SYS (nl_langinfo, char *, (nl_item item));
+#  endif
+_GL_CXXALIAS_SYS (nl_langinfo, char *, (nl_item item));
+# endif
+_GL_CXXALIASWARN (nl_langinfo);
+#elif defined GNULIB_POSIXCHECK
+# undef nl_langinfo
+# if HAVE_RAW_DECL_NL_LANGINFO
+_GL_WARN_ON_USE (nl_langinfo, "nl_langinfo is not portable - "
+                 "use gnulib module nl_langinfo for portability");
+# endif
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_LANGINFO_H */
+#endif /* _@GUARD_PREFIX@_LANGINFO_H */
diff --git a/src/grep/lib/lc-charset-dispatch.c b/src/grep/lib/lc-charset-dispatch.c
new file mode 100644
index 0000000..88a0bd3
--- /dev/null
+++ b/src/grep/lib/lc-charset-dispatch.c
@@ -0,0 +1,82 @@
+/* Dispatching based on the current locale's character encoding.
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2018.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "lc-charset-dispatch.h"
+
+#if GNULIB_defined_mbstate_t
+
+# include "localcharset.h"
+# include "streq.h"
+
+# if GNULIB_WCHAR_SINGLE_LOCALE
+/* When we know that the locale does not change, provide a speedup by
+   caching the value of locale_encoding_classification.  */
+#  define locale_encoding_classification_cached locale_encoding_classification
+# else
+/* By default, don't make assumptions, hence no caching.  */
+#  define locale_encoding_classification_uncached locale_encoding_classification
+# endif
+
+# if GNULIB_WCHAR_SINGLE_LOCALE
+static inline
+# endif
+enc_t
+locale_encoding_classification_uncached (void)
+{
+  const char *encoding = locale_charset ();
+  if (STREQ_OPT (encoding, "UTF-8", 'U', 'T', 'F', '-', '8', 0, 0, 0, 0))
+    return enc_utf8;
+  if (STREQ_OPT (encoding, "EUC-JP", 'E', 'U', 'C', '-', 'J', 'P', 0, 0, 0))
+    return enc_eucjp;
+  if (STREQ_OPT (encoding, "EUC-KR", 'E', 'U', 'C', '-', 'K', 'R', 0, 0, 0)
+      || STREQ_OPT (encoding, "GB2312", 'G', 'B', '2', '3', '1', '2', 0, 0, 0)
+      || STREQ_OPT (encoding, "BIG5", 'B', 'I', 'G', '5', 0, 0, 0, 0, 0))
+    return enc_94;
+  if (STREQ_OPT (encoding, "EUC-TW", 'E', 'U', 'C', '-', 'T', 'W', 0, 0, 0))
+    return enc_euctw;
+  if (STREQ_OPT (encoding, "GB18030", 'G', 'B', '1', '8', '0', '3', '0', 0, 0))
+    return enc_gb18030;
+  if (STREQ_OPT (encoding, "SJIS", 'S', 'J', 'I', 'S', 0, 0, 0, 0, 0))
+    return enc_sjis;
+  return enc_other;
+}
+
+# if GNULIB_WCHAR_SINGLE_LOCALE
+
+static int cached_locale_enc = -1;
+
+enc_t
+locale_encoding_classification_cached (void)
+{
+  if (cached_locale_enc < 0)
+    cached_locale_enc = locale_encoding_classification_uncached ();
+  return cached_locale_enc;
+}
+
+# endif
+
+#else
+
+/* This declaration is solely to ensure that after preprocessing
+   this file is never empty.  */
+typedef int dummy;
+
+#endif
diff --git a/src/grep/lib/lc-charset-dispatch.h b/src/grep/lib/lc-charset-dispatch.h
new file mode 100644
index 0000000..59b485d
--- /dev/null
+++ b/src/grep/lib/lc-charset-dispatch.h
@@ -0,0 +1,40 @@
+/* Dispatching based on the current locale's character encoding.
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2018.  */
+
+#include <wchar.h>
+
+#if GNULIB_defined_mbstate_t
+
+/* A classification of special values of the encoding of the current locale.  */
+typedef enum
+  {
+    enc_other,      /* other */
+    enc_utf8,       /* UTF-8 */
+    enc_eucjp,      /* EUC-JP */
+    enc_94,         /* EUC-KR, GB2312, BIG5 */
+    enc_euctw,      /* EUC-TW */
+    enc_gb18030,    /* GB18030 */
+    enc_sjis        /* SJIS */
+  }
+  enc_t;
+
+/* Returns a classification of special values of the encoding of the current
+   locale.  */
+extern enc_t locale_encoding_classification (void);
+
+#endif
diff --git a/src/grep/lib/libc-config.h b/src/grep/lib/libc-config.h
new file mode 100644
index 0000000..f68749f
--- /dev/null
+++ b/src/grep/lib/libc-config.h
@@ -0,0 +1,188 @@
+/* System definitions for code taken from the GNU C Library
+
+   Copyright 2017-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+/* This is intended to be a good-enough substitute for glibc system
+   macros like those defined in <sys/cdefs.h>, so that Gnulib code
+   shared with glibc can do this as the first #include:
+
+     #ifndef _LIBC
+     # include <libc-config.h>
+     #endif
+
+   When compiled as part of glibc this is a no-op; when compiled as
+   part of Gnulib this includes Gnulib's <config.h> and defines macros
+   that glibc library code would normally assume.
+
+   Note: This header file MUST NOT be included by public header files
+   of Gnulib.  */
+
+#include <config.h>
+
+/* On glibc this includes <features.h> and <sys/cdefs.h> and #defines
+   _FEATURES_H, __WORDSIZE, and __set_errno.  On FreeBSD 11 and
+   DragonFlyBSD 5.9 it includes <sys/cdefs.h> which defines __nonnull.
+   Elsewhere it is harmless.  */
+#include <errno.h>
+
+/* From glibc <errno.h>.  */
+#ifndef __set_errno
+# define __set_errno(val) (errno = (val))
+#endif
+
+/* From glibc <features.h>.  */
+
+#ifndef __GNUC_PREREQ
+# if defined __GNUC__ && defined __GNUC_MINOR__
+#  define __GNUC_PREREQ(maj, min) ((maj) < __GNUC__ + ((min) <= __GNUC_MINOR__))
+# else
+#  define __GNUC_PREREQ(maj, min) 0
+# endif
+#endif
+
+#ifndef __glibc_clang_prereq
+# if defined __clang_major__ && defined __clang_minor__
+#  ifdef __apple_build_version__
+/* Apple for some reason renumbers __clang_major__ and __clang_minor__.
+   Gnulib code uses only __glibc_clang_prereq (3, 5); map it to
+   6000000 <= __apple_build_version__.  Support for other calls to
+   __glibc_clang_prereq can be added here as needed.  */
+#   define __glibc_clang_prereq(maj, min) \
+      ((maj) == 3 && (min) == 5 ? 6000000 <= __apple_build_version__ : 0)
+#  else
+#   define __glibc_clang_prereq(maj, min) \
+      ((maj) < __clang_major__ + ((min) <= __clang_minor__))
+#  endif
+# else
+#  define __glibc_clang_prereq(maj, min) 0
+# endif
+#endif
+
+#ifndef __attribute_nonnull__
+/* <sys/cdefs.h> either does not exist, or is too old for Gnulib.
+   Prepare to include <cdefs.h>, which is Gnulib's version of a
+   more-recent glibc <sys/cdefs.h>.  */
+
+/* Define _FEATURES_H so that <cdefs.h> does not include <features.h>.  */
+# ifndef _FEATURES_H
+#  define _FEATURES_H 1
+# endif
+/* Define __GNULIB_CDEFS so that <cdefs.h> does not attempt to include
+   nonexistent files.  */
+# define __GNULIB_CDEFS
+/* Undef the macros unconditionally defined by our copy of glibc
+   <sys/cdefs.h>, so that they do not clash with any system-defined
+   versions.  */
+# undef _SYS_CDEFS_H
+# undef __ASMNAME
+# undef __ASMNAME2
+# undef __BEGIN_DECLS
+# undef __CONCAT
+# undef __END_DECLS
+# undef __HAVE_GENERIC_SELECTION
+# undef __LDBL_COMPAT
+# undef __LDBL_REDIR
+# undef __LDBL_REDIR1
+# undef __LDBL_REDIR1_DECL
+# undef __LDBL_REDIR1_NTH
+# undef __LDBL_REDIR2_DECL
+# undef __LDBL_REDIR_DECL
+# undef __LDBL_REDIR_NTH
+# undef __LEAF
+# undef __LEAF_ATTR
+# undef __NTH
+# undef __NTHNL
+# undef __REDIRECT
+# undef __REDIRECT_LDBL
+# undef __REDIRECT_NTH
+# undef __REDIRECT_NTHNL
+# undef __REDIRECT_NTH_LDBL
+# undef __STRING
+# undef __THROW
+# undef __THROWNL
+# undef __attr_access
+# undef __attribute__
+# undef __attribute_alloc_size__
+# undef __attribute_artificial__
+# undef __attribute_const__
+# undef __attribute_deprecated__
+# undef __attribute_deprecated_msg__
+# undef __attribute_format_arg__
+# undef __attribute_format_strfmon__
+# undef __attribute_malloc__
+# undef __attribute_noinline__
+# undef __attribute_nonstring__
+# undef __attribute_pure__
+# undef __attribute_returns_twice__
+# undef __attribute_used__
+# undef __attribute_warn_unused_result__
+# undef __bos
+# undef __bos0
+# undef __errordecl
+# undef __extension__
+# undef __extern_always_inline
+# undef __extern_inline
+# undef __flexarr
+# undef __fortify_function
+# undef __glibc_c99_flexarr_available
+# undef __glibc_has_attribute
+# undef __glibc_has_builtin
+# undef __glibc_has_extension
+# undef __glibc_macro_warning
+# undef __glibc_macro_warning1
+# undef __glibc_objsize
+# undef __glibc_objsize0
+# undef __glibc_unlikely
+# undef __inline
+# undef __ptr_t
+# undef __restrict
+# undef __restrict_arr
+# undef __va_arg_pack
+# undef __va_arg_pack_len
+# undef __warnattr
+
+/* Include our copy of glibc <sys/cdefs.h>.  */
+# include <cdefs.h>
+
+/* <cdefs.h> __inline is too pessimistic for non-GCC.  */
+# undef __inline
+# ifndef HAVE___INLINE
+#  if 199901 <= __STDC_VERSION__ || defined inline
+#   define __inline inline
+#  else
+#   define __inline
+#  endif
+# endif
+
+#endif /* defined __glibc_likely */
+
+
+/* A substitute for glibc <libc-symbols.h>, good enough for Gnulib.  */
+#define attribute_hidden
+#define libc_hidden_proto(name)
+#define libc_hidden_def(name)
+#define libc_hidden_weak(name)
+#define libc_hidden_ver(local, name)
+#define strong_alias(name, aliasname)
+#define weak_alias(name, aliasname)
+
+/* A substitute for glibc <shlib-compat.h>, good enough for Gnulib.  */
+#define SHLIB_COMPAT(lib, introduced, obsoleted) 0
+#define compat_symbol(lib, local, symbol, version) extern int dummy
+#define versioned_symbol(lib, local, symbol, version) extern int dummy
diff --git a/src/grep/lib/limits.in.h b/src/grep/lib/limits.in.h
new file mode 100644
index 0000000..2ecafeb
--- /dev/null
+++ b/src/grep/lib/limits.in.h
@@ -0,0 +1,131 @@
+/* A GNU-like <limits.h>.
+
+   Copyright 2016-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined _GL_ALREADY_INCLUDING_LIMITS_H
+/* Special invocation convention:
+   On Haiku/x86_64, we have a sequence of nested includes
+   <limits.h> -> <syslimits.h> -> <limits.h>.
+   In this situation, LONG_MAX and INT_MAX are not yet defined,
+   therefore we should not attempt to define LONG_BIT.  */
+
+#@INCLUDE_NEXT@ @NEXT_LIMITS_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_LIMITS_H
+
+# define _GL_ALREADY_INCLUDING_LIMITS_H
+
+/* The include_next requires a split double-inclusion guard.  */
+# @INCLUDE_NEXT@ @NEXT_LIMITS_H@
+
+# undef _GL_ALREADY_INCLUDING_LIMITS_H
+
+#ifndef _@GUARD_PREFIX@_LIMITS_H
+#define _@GUARD_PREFIX@_LIMITS_H
+
+#ifndef LLONG_MIN
+# if defined LONG_LONG_MIN /* HP-UX 11.31 */
+#  define LLONG_MIN LONG_LONG_MIN
+# elif defined LONGLONG_MIN /* IRIX 6.5 */
+#  define LLONG_MIN LONGLONG_MIN
+# elif defined __GNUC__
+#  define LLONG_MIN (- __LONG_LONG_MAX__ - 1LL)
+# endif
+#endif
+#ifndef LLONG_MAX
+# if defined LONG_LONG_MAX /* HP-UX 11.31 */
+#  define LLONG_MAX LONG_LONG_MAX
+# elif defined LONGLONG_MAX /* IRIX 6.5 */
+#  define LLONG_MAX LONGLONG_MAX
+# elif defined __GNUC__
+#  define LLONG_MAX __LONG_LONG_MAX__
+# endif
+#endif
+#ifndef ULLONG_MAX
+# if defined ULONG_LONG_MAX /* HP-UX 11.31 */
+#  define ULLONG_MAX ULONG_LONG_MAX
+# elif defined ULONGLONG_MAX /* IRIX 6.5 */
+#  define ULLONG_MAX ULONGLONG_MAX
+# elif defined __GNUC__
+#  define ULLONG_MAX (__LONG_LONG_MAX__ * 2ULL + 1ULL)
+# endif
+#endif
+
+/* The number of usable bits in an unsigned or signed integer type
+   with minimum value MIN and maximum value MAX, as an int expression
+   suitable in #if.  Cover all known practical hosts.  This
+   implementation exploits the fact that MAX is 1 less than a power of
+   2, and merely counts the number of 1 bits in MAX; "COBn" means
+   "count the number of 1 bits in the low-order n bits").  */
+#define _GL_INTEGER_WIDTH(min, max) (((min) < 0) + _GL_COB128 (max))
+#define _GL_COB128(n) (_GL_COB64 ((n) >> 31 >> 31 >> 2) + _GL_COB64 (n))
+#define _GL_COB64(n) (_GL_COB32 ((n) >> 31 >> 1) + _GL_COB32 (n))
+#define _GL_COB32(n) (_GL_COB16 ((n) >> 16) + _GL_COB16 (n))
+#define _GL_COB16(n) (_GL_COB8 ((n) >> 8) + _GL_COB8 (n))
+#define _GL_COB8(n) (_GL_COB4 ((n) >> 4) + _GL_COB4 (n))
+#define _GL_COB4(n) (!!((n) & 8) + !!((n) & 4) + !!((n) & 2) + !!((n) & 1))
+
+#ifndef WORD_BIT
+/* Assume 'int' is 32 bits wide.  */
+# define WORD_BIT 32
+#endif
+#ifndef LONG_BIT
+/* Assume 'long' is 32 or 64 bits wide.  */
+# if LONG_MAX == INT_MAX
+#  define LONG_BIT 32
+# else
+#  define LONG_BIT 64
+# endif
+#endif
+
+/* Macros specified by C2x and by ISO/IEC TS 18661-1:2014.  */
+
+#if (! defined ULLONG_WIDTH                                             \
+     && (defined _GNU_SOURCE || defined __STDC_WANT_IEC_60559_BFP_EXT__ \
+         || (defined __STDC_VERSION__ && 201710 < __STDC_VERSION__)))
+# define CHAR_WIDTH _GL_INTEGER_WIDTH (CHAR_MIN, CHAR_MAX)
+# define SCHAR_WIDTH _GL_INTEGER_WIDTH (SCHAR_MIN, SCHAR_MAX)
+# define UCHAR_WIDTH _GL_INTEGER_WIDTH (0, UCHAR_MAX)
+# define SHRT_WIDTH _GL_INTEGER_WIDTH (SHRT_MIN, SHRT_MAX)
+# define USHRT_WIDTH _GL_INTEGER_WIDTH (0, USHRT_MAX)
+# define INT_WIDTH _GL_INTEGER_WIDTH (INT_MIN, INT_MAX)
+# define UINT_WIDTH _GL_INTEGER_WIDTH (0, UINT_MAX)
+# define LONG_WIDTH _GL_INTEGER_WIDTH (LONG_MIN, LONG_MAX)
+# define ULONG_WIDTH _GL_INTEGER_WIDTH (0, ULONG_MAX)
+# define LLONG_WIDTH _GL_INTEGER_WIDTH (LLONG_MIN, LLONG_MAX)
+# define ULLONG_WIDTH _GL_INTEGER_WIDTH (0, ULLONG_MAX)
+#endif
+
+/* Macros specified by C2x.  */
+
+#if (! defined BOOL_WIDTH \
+     && (defined _GNU_SOURCE \
+         || (defined __STDC_VERSION__ && 201710 < __STDC_VERSION__)))
+# define BOOL_MAX 1
+# define BOOL_WIDTH 1
+#endif
+
+#endif /* _@GUARD_PREFIX@_LIMITS_H */
+#endif /* _@GUARD_PREFIX@_LIMITS_H */
+#endif
diff --git a/src/grep/lib/localcharset.c b/src/grep/lib/localcharset.c
new file mode 100644
index 0000000..3c50858
--- /dev/null
+++ b/src/grep/lib/localcharset.c
@@ -0,0 +1,1159 @@
+/* Determine a canonical name for the current locale's character encoding.
+
+   Copyright (C) 2000-2006, 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "localcharset.h"
+
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#if defined __APPLE__ && defined __MACH__ && HAVE_LANGINFO_CODESET
+# define DARWIN7 /* Darwin 7 or newer, i.e. Mac OS X 10.3 or newer */
+#endif
+
+#if defined _WIN32 && !defined __CYGWIN__
+# define WINDOWS_NATIVE
+# include <locale.h>
+#endif
+
+#if defined __EMX__
+/* Assume EMX program runs on OS/2, even if compiled under DOS.  */
+# ifndef OS2
+#  define OS2
+# endif
+#endif
+
+#if !defined WINDOWS_NATIVE
+# if HAVE_LANGINFO_CODESET
+#  include <langinfo.h>
+# else
+#  if 0 /* see comment regarding use of setlocale(), below */
+#   include <locale.h>
+#  endif
+# endif
+# ifdef __CYGWIN__
+#  define WIN32_LEAN_AND_MEAN
+#  include <windows.h>
+# endif
+#elif defined WINDOWS_NATIVE
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+  /* For the use of setlocale() below, the Gnulib override in setlocale.c is
+     not needed; see the platform lists in setlocale_null.m4.  */
+# undef setlocale
+#endif
+#if defined OS2
+# define INCL_DOS
+# include <os2.h>
+#endif
+
+/* For MB_CUR_MAX_L */
+#if defined DARWIN7
+# include <xlocale.h>
+#endif
+
+
+#if HAVE_LANGINFO_CODESET || defined WINDOWS_NATIVE || defined OS2
+
+/* On these platforms, we use a mapping from non-canonical encoding name
+   to GNU canonical encoding name.  */
+
+/* With glibc-2.1 or newer, we don't need any canonicalization,
+   because glibc has iconv and both glibc and libiconv support all
+   GNU canonical names directly.  */
+# if !((defined __GNU_LIBRARY__ && __GLIBC__ >= 2) || defined __UCLIBC__)
+
+struct table_entry
+{
+  const char alias[11+1];
+  const char canonical[11+1];
+};
+
+/* Table of platform-dependent mappings, sorted in ascending order.  */
+static const struct table_entry alias_table[] =
+  {
+#  if defined __FreeBSD__                                   /* FreeBSD */
+  /*{ "ARMSCII-8",  "ARMSCII-8" },*/
+    { "Big5",       "BIG5" },
+    { "C",          "ASCII" },
+  /*{ "CP1131",     "CP1131" },*/
+  /*{ "CP1251",     "CP1251" },*/
+  /*{ "CP866",      "CP866" },*/
+  /*{ "GB18030",    "GB18030" },*/
+  /*{ "GB2312",     "GB2312" },*/
+  /*{ "GBK",        "GBK" },*/
+  /*{ "ISCII-DEV",  "?" },*/
+    { "ISO8859-1",  "ISO-8859-1" },
+    { "ISO8859-13", "ISO-8859-13" },
+    { "ISO8859-15", "ISO-8859-15" },
+    { "ISO8859-2",  "ISO-8859-2" },
+    { "ISO8859-5",  "ISO-8859-5" },
+    { "ISO8859-7",  "ISO-8859-7" },
+    { "ISO8859-9",  "ISO-8859-9" },
+  /*{ "KOI8-R",     "KOI8-R" },*/
+  /*{ "KOI8-U",     "KOI8-U" },*/
+    { "SJIS",       "SHIFT_JIS" },
+    { "US-ASCII",   "ASCII" },
+    { "eucCN",      "GB2312" },
+    { "eucJP",      "EUC-JP" },
+    { "eucKR",      "EUC-KR" }
+#   define alias_table_defined
+#  endif
+#  if defined __NetBSD__                                    /* NetBSD */
+    { "646",        "ASCII" },
+  /*{ "ARMSCII-8",  "ARMSCII-8" },*/
+  /*{ "BIG5",       "BIG5" },*/
+    { "Big5-HKSCS", "BIG5-HKSCS" },
+  /*{ "CP1251",     "CP1251" },*/
+  /*{ "CP866",      "CP866" },*/
+  /*{ "GB18030",    "GB18030" },*/
+  /*{ "GB2312",     "GB2312" },*/
+    { "ISO8859-1",  "ISO-8859-1" },
+    { "ISO8859-13", "ISO-8859-13" },
+    { "ISO8859-15", "ISO-8859-15" },
+    { "ISO8859-2",  "ISO-8859-2" },
+    { "ISO8859-4",  "ISO-8859-4" },
+    { "ISO8859-5",  "ISO-8859-5" },
+    { "ISO8859-7",  "ISO-8859-7" },
+  /*{ "KOI8-R",     "KOI8-R" },*/
+  /*{ "KOI8-U",     "KOI8-U" },*/
+  /*{ "PT154",      "PT154" },*/
+    { "SJIS",       "SHIFT_JIS" },
+    { "eucCN",      "GB2312" },
+    { "eucJP",      "EUC-JP" },
+    { "eucKR",      "EUC-KR" },
+    { "eucTW",      "EUC-TW" }
+#   define alias_table_defined
+#  endif
+#  if defined __OpenBSD__                                   /* OpenBSD */
+    { "646",        "ASCII" },
+    { "ISO8859-1",  "ISO-8859-1" },
+    { "ISO8859-13", "ISO-8859-13" },
+    { "ISO8859-15", "ISO-8859-15" },
+    { "ISO8859-2",  "ISO-8859-2" },
+    { "ISO8859-4",  "ISO-8859-4" },
+    { "ISO8859-5",  "ISO-8859-5" },
+    { "ISO8859-7",  "ISO-8859-7" },
+    { "US-ASCII",   "ASCII" }
+#   define alias_table_defined
+#  endif
+#  if defined __APPLE__ && defined __MACH__                 /* Mac OS X */
+    /* Darwin 7.5 has nl_langinfo(CODESET), but sometimes its value is
+       useless:
+       - It returns the empty string when LANG is set to a locale of the
+         form ll_CC, although ll_CC/LC_CTYPE is a symlink to an UTF-8
+         LC_CTYPE file.
+       - The environment variables LANG, LC_CTYPE, LC_ALL are not set by
+         the system; nl_langinfo(CODESET) returns "US-ASCII" in this case.
+       - The documentation says:
+           "... all code that calls BSD system routines should ensure
+            that the const *char parameters of these routines are in UTF-8
+            encoding. All BSD system functions expect their string
+            parameters to be in UTF-8 encoding and nothing else."
+         It also says
+           "An additional caveat is that string parameters for files,
+            paths, and other file-system entities must be in canonical
+            UTF-8. In a canonical UTF-8 Unicode string, all decomposable
+            characters are decomposed ..."
+         but this is not true: You can pass non-decomposed UTF-8 strings
+         to file system functions, and it is the OS which will convert
+         them to decomposed UTF-8 before accessing the file system.
+       - The Apple Terminal application displays UTF-8 by default.
+       - However, other applications are free to use different encodings:
+         - xterm uses ISO-8859-1 by default.
+         - TextEdit uses MacRoman by default.
+       We prefer UTF-8 over decomposed UTF-8-MAC because one should
+       minimize the use of decomposed Unicode. Unfortunately, through the
+       Darwin file system, decomposed UTF-8 strings are leaked into user
+       space nevertheless.
+       Then there are also the locales with encodings other than US-ASCII
+       and UTF-8. These locales can be occasionally useful to users (e.g.
+       when grepping through ISO-8859-1 encoded text files), when all their
+       file names are in US-ASCII.
+     */
+    { "ARMSCII-8",  "ARMSCII-8" },
+    { "Big5",       "BIG5" },
+    { "Big5HKSCS",  "BIG5-HKSCS" },
+    { "CP1131",     "CP1131" },
+    { "CP1251",     "CP1251" },
+    { "CP866",      "CP866" },
+    { "CP949",      "CP949" },
+    { "GB18030",    "GB18030" },
+    { "GB2312",     "GB2312" },
+    { "GBK",        "GBK" },
+  /*{ "ISCII-DEV",  "?" },*/
+    { "ISO8859-1",  "ISO-8859-1" },
+    { "ISO8859-13", "ISO-8859-13" },
+    { "ISO8859-15", "ISO-8859-15" },
+    { "ISO8859-2",  "ISO-8859-2" },
+    { "ISO8859-4",  "ISO-8859-4" },
+    { "ISO8859-5",  "ISO-8859-5" },
+    { "ISO8859-7",  "ISO-8859-7" },
+    { "ISO8859-9",  "ISO-8859-9" },
+    { "KOI8-R",     "KOI8-R" },
+    { "KOI8-U",     "KOI8-U" },
+    { "PT154",      "PT154" },
+    { "SJIS",       "SHIFT_JIS" },
+    { "eucCN",      "GB2312" },
+    { "eucJP",      "EUC-JP" },
+    { "eucKR",      "EUC-KR" }
+#   define alias_table_defined
+#  endif
+#  if defined _AIX                                          /* AIX */
+  /*{ "GBK",        "GBK" },*/
+    { "IBM-1046",   "CP1046" },
+    { "IBM-1124",   "CP1124" },
+    { "IBM-1129",   "CP1129" },
+    { "IBM-1252",   "CP1252" },
+    { "IBM-850",    "CP850" },
+    { "IBM-856",    "CP856" },
+    { "IBM-921",    "ISO-8859-13" },
+    { "IBM-922",    "CP922" },
+    { "IBM-932",    "CP932" },
+    { "IBM-943",    "CP943" },
+    { "IBM-eucCN",  "GB2312" },
+    { "IBM-eucJP",  "EUC-JP" },
+    { "IBM-eucKR",  "EUC-KR" },
+    { "IBM-eucTW",  "EUC-TW" },
+    { "ISO8859-1",  "ISO-8859-1" },
+    { "ISO8859-15", "ISO-8859-15" },
+    { "ISO8859-2",  "ISO-8859-2" },
+    { "ISO8859-5",  "ISO-8859-5" },
+    { "ISO8859-6",  "ISO-8859-6" },
+    { "ISO8859-7",  "ISO-8859-7" },
+    { "ISO8859-8",  "ISO-8859-8" },
+    { "ISO8859-9",  "ISO-8859-9" },
+    { "TIS-620",    "TIS-620" },
+  /*{ "UTF-8",      "UTF-8" },*/
+    { "big5",       "BIG5" }
+#   define alias_table_defined
+#  endif
+#  if defined __hpux                                        /* HP-UX */
+    { "SJIS",      "SHIFT_JIS" },
+    { "arabic8",   "HP-ARABIC8" },
+    { "big5",      "BIG5" },
+    { "cp1251",    "CP1251" },
+    { "eucJP",     "EUC-JP" },
+    { "eucKR",     "EUC-KR" },
+    { "eucTW",     "EUC-TW" },
+    { "gb18030",   "GB18030" },
+    { "greek8",    "HP-GREEK8" },
+    { "hebrew8",   "HP-HEBREW8" },
+    { "hkbig5",    "BIG5-HKSCS" },
+    { "hp15CN",    "GB2312" },
+    { "iso88591",  "ISO-8859-1" },
+    { "iso885913", "ISO-8859-13" },
+    { "iso885915", "ISO-8859-15" },
+    { "iso88592",  "ISO-8859-2" },
+    { "iso88594",  "ISO-8859-4" },
+    { "iso88595",  "ISO-8859-5" },
+    { "iso88596",  "ISO-8859-6" },
+    { "iso88597",  "ISO-8859-7" },
+    { "iso88598",  "ISO-8859-8" },
+    { "iso88599",  "ISO-8859-9" },
+    { "kana8",     "HP-KANA8" },
+    { "koi8r",     "KOI8-R" },
+    { "roman8",    "HP-ROMAN8" },
+    { "tis620",    "TIS-620" },
+    { "turkish8",  "HP-TURKISH8" },
+    { "utf8",      "UTF-8" }
+#   define alias_table_defined
+#  endif
+#  if defined __sgi                                         /* IRIX */
+    { "ISO8859-1",  "ISO-8859-1" },
+    { "ISO8859-15", "ISO-8859-15" },
+    { "ISO8859-2",  "ISO-8859-2" },
+    { "ISO8859-5",  "ISO-8859-5" },
+    { "ISO8859-7",  "ISO-8859-7" },
+    { "ISO8859-9",  "ISO-8859-9" },
+    { "eucCN",      "GB2312" },
+    { "eucJP",      "EUC-JP" },
+    { "eucKR",      "EUC-KR" },
+    { "eucTW",      "EUC-TW" }
+#   define alias_table_defined
+#  endif
+#  if defined __osf__                                       /* OSF/1 */
+  /*{ "GBK",        "GBK" },*/
+    { "ISO8859-1",  "ISO-8859-1" },
+    { "ISO8859-15", "ISO-8859-15" },
+    { "ISO8859-2",  "ISO-8859-2" },
+    { "ISO8859-4",  "ISO-8859-4" },
+    { "ISO8859-5",  "ISO-8859-5" },
+    { "ISO8859-7",  "ISO-8859-7" },
+    { "ISO8859-8",  "ISO-8859-8" },
+    { "ISO8859-9",  "ISO-8859-9" },
+    { "KSC5601",    "CP949" },
+    { "SJIS",       "SHIFT_JIS" },
+    { "TACTIS",     "TIS-620" },
+  /*{ "UTF-8",      "UTF-8" },*/
+    { "big5",       "BIG5" },
+    { "cp850",      "CP850" },
+    { "dechanyu",   "DEC-HANYU" },
+    { "dechanzi",   "GB2312" },
+    { "deckanji",   "DEC-KANJI" },
+    { "deckorean",  "EUC-KR" },
+    { "eucJP",      "EUC-JP" },
+    { "eucKR",      "EUC-KR" },
+    { "eucTW",      "EUC-TW" },
+    { "sdeckanji",  "EUC-JP" }
+#   define alias_table_defined
+#  endif
+#  if defined __sun                                         /* Solaris */
+    { "5601",        "EUC-KR" },
+    { "646",         "ASCII" },
+  /*{ "BIG5",        "BIG5" },*/
+    { "Big5-HKSCS",  "BIG5-HKSCS" },
+    { "GB18030",     "GB18030" },
+  /*{ "GBK",         "GBK" },*/
+    { "ISO8859-1",   "ISO-8859-1" },
+    { "ISO8859-11",  "TIS-620" },
+    { "ISO8859-13",  "ISO-8859-13" },
+    { "ISO8859-15",  "ISO-8859-15" },
+    { "ISO8859-2",   "ISO-8859-2" },
+    { "ISO8859-3",   "ISO-8859-3" },
+    { "ISO8859-4",   "ISO-8859-4" },
+    { "ISO8859-5",   "ISO-8859-5" },
+    { "ISO8859-6",   "ISO-8859-6" },
+    { "ISO8859-7",   "ISO-8859-7" },
+    { "ISO8859-8",   "ISO-8859-8" },
+    { "ISO8859-9",   "ISO-8859-9" },
+    { "PCK",         "SHIFT_JIS" },
+    { "TIS620.2533", "TIS-620" },
+  /*{ "UTF-8",       "UTF-8" },*/
+    { "ansi-1251",   "CP1251" },
+    { "cns11643",    "EUC-TW" },
+    { "eucJP",       "EUC-JP" },
+    { "gb2312",      "GB2312" },
+    { "koi8-r",      "KOI8-R" }
+#   define alias_table_defined
+#  endif
+#  if defined __minix                                       /* Minix */
+    { "646", "ASCII" }
+#   define alias_table_defined
+#  endif
+#  if defined WINDOWS_NATIVE || defined __CYGWIN__          /* Windows */
+    { "CP1361",  "JOHAB" },
+    { "CP20127", "ASCII" },
+    { "CP20866", "KOI8-R" },
+    { "CP20936", "GB2312" },
+    { "CP21866", "KOI8-RU" },
+    { "CP28591", "ISO-8859-1" },
+    { "CP28592", "ISO-8859-2" },
+    { "CP28593", "ISO-8859-3" },
+    { "CP28594", "ISO-8859-4" },
+    { "CP28595", "ISO-8859-5" },
+    { "CP28596", "ISO-8859-6" },
+    { "CP28597", "ISO-8859-7" },
+    { "CP28598", "ISO-8859-8" },
+    { "CP28599", "ISO-8859-9" },
+    { "CP28605", "ISO-8859-15" },
+    { "CP38598", "ISO-8859-8" },
+    { "CP51932", "EUC-JP" },
+    { "CP51936", "GB2312" },
+    { "CP51949", "EUC-KR" },
+    { "CP51950", "EUC-TW" },
+    { "CP54936", "GB18030" },
+    { "CP65001", "UTF-8" },
+    { "CP936",   "GBK" }
+#   define alias_table_defined
+#  endif
+#  if defined OS2                                           /* OS/2 */
+    /* The list of encodings is taken from "List of OS/2 Codepages"
+       by Alex Taylor:
+       <http://altsan.org/os2/toolkits/uls/index.html#codepages>.
+       See also "__convcp() of kLIBC":
+       <https://github.com/bitwiseworks/libc/blob/master/src/emx/src/lib/locale/__convcp.c>.  */
+    { "CP1004",        "CP1252" },
+  /*{ "CP1041",        "CP943" },*/
+  /*{ "CP1088",        "CP949" },*/
+    { "CP1089",        "ISO-8859-6" },
+  /*{ "CP1114",        "CP950" },*/
+  /*{ "CP1115",        "GB2312" },*/
+    { "CP1208",        "UTF-8" },
+  /*{ "CP1380",        "GB2312" },*/
+    { "CP1381",        "GB2312" },
+    { "CP1383",        "GB2312" },
+    { "CP1386",        "GBK" },
+  /*{ "CP301",         "CP943" },*/
+    { "CP3372",        "EUC-JP" },
+    { "CP4946",        "CP850" },
+  /*{ "CP5048",        "JIS_X0208-1990" },*/
+  /*{ "CP5049",        "JIS_X0212-1990" },*/
+  /*{ "CP5067",        "KS_C_5601-1987" },*/
+    { "CP813",         "ISO-8859-7" },
+    { "CP819",         "ISO-8859-1" },
+    { "CP878",         "KOI8-R" },
+  /*{ "CP897",         "CP943" },*/
+    { "CP912",         "ISO-8859-2" },
+    { "CP913",         "ISO-8859-3" },
+    { "CP914",         "ISO-8859-4" },
+    { "CP915",         "ISO-8859-5" },
+    { "CP916",         "ISO-8859-8" },
+    { "CP920",         "ISO-8859-9" },
+    { "CP921",         "ISO-8859-13" },
+    { "CP923",         "ISO-8859-15" },
+  /*{ "CP941",         "CP943" },*/
+  /*{ "CP947",         "CP950" },*/
+  /*{ "CP951",         "CP949" },*/
+  /*{ "CP952",         "JIS_X0208-1990" },*/
+  /*{ "CP953",         "JIS_X0212-1990" },*/
+    { "CP954",         "EUC-JP" },
+    { "CP964",         "EUC-TW" },
+    { "CP970",         "EUC-KR" },
+  /*{ "CP971",         "KS_C_5601-1987" },*/
+    { "IBM-1004",      "CP1252" },
+  /*{ "IBM-1006",      "?" },*/
+  /*{ "IBM-1008",      "?" },*/
+  /*{ "IBM-1041",      "CP943" },*/
+  /*{ "IBM-1051",      "?" },*/
+  /*{ "IBM-1088",      "CP949" },*/
+    { "IBM-1089",      "ISO-8859-6" },
+  /*{ "IBM-1098",      "?" },*/
+  /*{ "IBM-1114",      "CP950" },*/
+  /*{ "IBM-1115",      "GB2312" },*/
+  /*{ "IBM-1116",      "?" },*/
+  /*{ "IBM-1117",      "?" },*/
+  /*{ "IBM-1118",      "?" },*/
+  /*{ "IBM-1119",      "?" },*/
+    { "IBM-1124",      "CP1124" },
+    { "IBM-1125",      "CP1125" },
+    { "IBM-1131",      "CP1131" },
+    { "IBM-1208",      "UTF-8" },
+    { "IBM-1250",      "CP1250" },
+    { "IBM-1251",      "CP1251" },
+    { "IBM-1252",      "CP1252" },
+    { "IBM-1253",      "CP1253" },
+    { "IBM-1254",      "CP1254" },
+    { "IBM-1255",      "CP1255" },
+    { "IBM-1256",      "CP1256" },
+    { "IBM-1257",      "CP1257" },
+  /*{ "IBM-1275",      "?" },*/
+  /*{ "IBM-1276",      "?" },*/
+  /*{ "IBM-1277",      "?" },*/
+  /*{ "IBM-1280",      "?" },*/
+  /*{ "IBM-1281",      "?" },*/
+  /*{ "IBM-1282",      "?" },*/
+  /*{ "IBM-1283",      "?" },*/
+  /*{ "IBM-1380",      "GB2312" },*/
+    { "IBM-1381",      "GB2312" },
+    { "IBM-1383",      "GB2312" },
+    { "IBM-1386",      "GBK" },
+  /*{ "IBM-301",       "CP943" },*/
+    { "IBM-3372",      "EUC-JP" },
+    { "IBM-367",       "ASCII" },
+    { "IBM-437",       "CP437" },
+    { "IBM-4946",      "CP850" },
+  /*{ "IBM-5048",      "JIS_X0208-1990" },*/
+  /*{ "IBM-5049",      "JIS_X0212-1990" },*/
+  /*{ "IBM-5067",      "KS_C_5601-1987" },*/
+    { "IBM-813",       "ISO-8859-7" },
+    { "IBM-819",       "ISO-8859-1" },
+    { "IBM-850",       "CP850" },
+  /*{ "IBM-851",       "?" },*/
+    { "IBM-852",       "CP852" },
+    { "IBM-855",       "CP855" },
+    { "IBM-856",       "CP856" },
+    { "IBM-857",       "CP857" },
+  /*{ "IBM-859",       "?" },*/
+    { "IBM-860",       "CP860" },
+    { "IBM-861",       "CP861" },
+    { "IBM-862",       "CP862" },
+    { "IBM-863",       "CP863" },
+    { "IBM-864",       "CP864" },
+    { "IBM-865",       "CP865" },
+    { "IBM-866",       "CP866" },
+  /*{ "IBM-868",       "?" },*/
+    { "IBM-869",       "CP869" },
+    { "IBM-874",       "CP874" },
+    { "IBM-878",       "KOI8-R" },
+  /*{ "IBM-895",       "?" },*/
+  /*{ "IBM-897",       "CP943" },*/
+  /*{ "IBM-907",       "?" },*/
+  /*{ "IBM-909",       "?" },*/
+    { "IBM-912",       "ISO-8859-2" },
+    { "IBM-913",       "ISO-8859-3" },
+    { "IBM-914",       "ISO-8859-4" },
+    { "IBM-915",       "ISO-8859-5" },
+    { "IBM-916",       "ISO-8859-8" },
+    { "IBM-920",       "ISO-8859-9" },
+    { "IBM-921",       "ISO-8859-13" },
+    { "IBM-922",       "CP922" },
+    { "IBM-923",       "ISO-8859-15" },
+    { "IBM-932",       "CP932" },
+  /*{ "IBM-941",       "CP943" },*/
+  /*{ "IBM-942",       "?" },*/
+    { "IBM-943",       "CP943" },
+  /*{ "IBM-947",       "CP950" },*/
+    { "IBM-949",       "CP949" },
+    { "IBM-950",       "CP950" },
+  /*{ "IBM-951",       "CP949" },*/
+  /*{ "IBM-952",       "JIS_X0208-1990" },*/
+  /*{ "IBM-953",       "JIS_X0212-1990" },*/
+    { "IBM-954",       "EUC-JP" },
+  /*{ "IBM-955",       "?" },*/
+    { "IBM-964",       "EUC-TW" },
+    { "IBM-970",       "EUC-KR" },
+  /*{ "IBM-971",       "KS_C_5601-1987" },*/
+    { "IBM-eucCN",     "GB2312" },
+    { "IBM-eucJP",     "EUC-JP" },
+    { "IBM-eucKR",     "EUC-KR" },
+    { "IBM-eucTW",     "EUC-TW" },
+    { "IBM33722",      "EUC-JP" },
+    { "ISO8859-1",     "ISO-8859-1" },
+    { "ISO8859-2",     "ISO-8859-2" },
+    { "ISO8859-3",     "ISO-8859-3" },
+    { "ISO8859-4",     "ISO-8859-4" },
+    { "ISO8859-5",     "ISO-8859-5" },
+    { "ISO8859-6",     "ISO-8859-6" },
+    { "ISO8859-7",     "ISO-8859-7" },
+    { "ISO8859-8",     "ISO-8859-8" },
+    { "ISO8859-9",     "ISO-8859-9" },
+  /*{ "JISX0201-1976", "JISX0201-1976" },*/
+  /*{ "JISX0208-1978", "?" },*/
+  /*{ "JISX0208-1983", "JIS_X0208-1983" },*/
+  /*{ "JISX0208-1990", "JIS_X0208-1990" },*/
+  /*{ "JISX0212-1990", "JIS_X0212-1990" },*/
+  /*{ "KSC5601-1987",  "KS_C_5601-1987" },*/
+    { "SJIS-1",        "CP943" },
+    { "SJIS-2",        "CP943" },
+    { "eucJP",         "EUC-JP" },
+    { "eucKR",         "EUC-KR" },
+    { "eucTW-1993",    "EUC-TW" }
+#   define alias_table_defined
+#  endif
+#  if defined VMS                                           /* OpenVMS */
+    /* The list of encodings is taken from the OpenVMS 7.3-1 documentation
+       "Compaq C Run-Time Library Reference Manual for OpenVMS systems"
+       section 10.7 "Handling Different Character Sets".  */
+    { "DECHANYU",  "DEC-HANYU" },
+    { "DECHANZI",  "GB2312" },
+    { "DECKANJI",  "DEC-KANJI" },
+    { "DECKOREAN", "EUC-KR" },
+    { "ISO8859-1", "ISO-8859-1" },
+    { "ISO8859-2", "ISO-8859-2" },
+    { "ISO8859-5", "ISO-8859-5" },
+    { "ISO8859-7", "ISO-8859-7" },
+    { "ISO8859-8", "ISO-8859-8" },
+    { "ISO8859-9", "ISO-8859-9" },
+    { "SDECKANJI", "EUC-JP" },
+    { "SJIS",      "SHIFT_JIS" },
+    { "eucJP",     "EUC-JP" },
+    { "eucTW",     "EUC-TW" }
+#   define alias_table_defined
+#  endif
+#  ifndef alias_table_defined
+    /* Just a dummy entry, to avoid a C syntax error.  */
+    { "", "" }
+#  endif
+  };
+
+# endif
+
+#else
+
+/* On these platforms, we use a mapping from locale name to GNU canonical
+   encoding name.  */
+
+struct table_entry
+{
+  const char locale[17+1];
+  const char canonical[11+1];
+};
+
+/* Table of platform-dependent mappings, sorted in ascending order.  */
+static const struct table_entry locale_table[] =
+  {
+# if defined __FreeBSD__                                    /* FreeBSD 4.2 */
+    { "cs_CZ.ISO_8859-2",  "ISO-8859-2" },
+    { "da_DK.DIS_8859-15", "ISO-8859-15" },
+    { "da_DK.ISO_8859-1",  "ISO-8859-1" },
+    { "de_AT.DIS_8859-15", "ISO-8859-15" },
+    { "de_AT.ISO_8859-1",  "ISO-8859-1" },
+    { "de_CH.DIS_8859-15", "ISO-8859-15" },
+    { "de_CH.ISO_8859-1",  "ISO-8859-1" },
+    { "de_DE.DIS_8859-15", "ISO-8859-15" },
+    { "de_DE.ISO_8859-1",  "ISO-8859-1" },
+    { "en_AU.DIS_8859-15", "ISO-8859-15" },
+    { "en_AU.ISO_8859-1",  "ISO-8859-1" },
+    { "en_CA.DIS_8859-15", "ISO-8859-15" },
+    { "en_CA.ISO_8859-1",  "ISO-8859-1" },
+    { "en_GB.DIS_8859-15", "ISO-8859-15" },
+    { "en_GB.ISO_8859-1",  "ISO-8859-1" },
+    { "en_US.DIS_8859-15", "ISO-8859-15" },
+    { "en_US.ISO_8859-1",  "ISO-8859-1" },
+    { "es_ES.DIS_8859-15", "ISO-8859-15" },
+    { "es_ES.ISO_8859-1",  "ISO-8859-1" },
+    { "fi_FI.DIS_8859-15", "ISO-8859-15" },
+    { "fi_FI.ISO_8859-1",  "ISO-8859-1" },
+    { "fr_BE.DIS_8859-15", "ISO-8859-15" },
+    { "fr_BE.ISO_8859-1",  "ISO-8859-1" },
+    { "fr_CA.DIS_8859-15", "ISO-8859-15" },
+    { "fr_CA.ISO_8859-1",  "ISO-8859-1" },
+    { "fr_CH.DIS_8859-15", "ISO-8859-15" },
+    { "fr_CH.ISO_8859-1",  "ISO-8859-1" },
+    { "fr_FR.DIS_8859-15", "ISO-8859-15" },
+    { "fr_FR.ISO_8859-1",  "ISO-8859-1" },
+    { "hr_HR.ISO_8859-2",  "ISO-8859-2" },
+    { "hu_HU.ISO_8859-2",  "ISO-8859-2" },
+    { "is_IS.DIS_8859-15", "ISO-8859-15" },
+    { "is_IS.ISO_8859-1",  "ISO-8859-1" },
+    { "it_CH.DIS_8859-15", "ISO-8859-15" },
+    { "it_CH.ISO_8859-1",  "ISO-8859-1" },
+    { "it_IT.DIS_8859-15", "ISO-8859-15" },
+    { "it_IT.ISO_8859-1",  "ISO-8859-1" },
+    { "ja_JP.EUC",         "EUC-JP" },
+    { "ja_JP.SJIS",        "SHIFT_JIS" },
+    { "ja_JP.Shift_JIS",   "SHIFT_JIS" },
+    { "ko_KR.EUC",         "EUC-KR" },
+    { "la_LN.ASCII",       "ASCII" },
+    { "la_LN.DIS_8859-15", "ISO-8859-15" },
+    { "la_LN.ISO_8859-1",  "ISO-8859-1" },
+    { "la_LN.ISO_8859-2",  "ISO-8859-2" },
+    { "la_LN.ISO_8859-4",  "ISO-8859-4" },
+    { "lt_LN.ASCII",       "ASCII" },
+    { "lt_LN.DIS_8859-15", "ISO-8859-15" },
+    { "lt_LN.ISO_8859-1",  "ISO-8859-1" },
+    { "lt_LN.ISO_8859-2",  "ISO-8859-2" },
+    { "lt_LT.ISO_8859-4",  "ISO-8859-4" },
+    { "nl_BE.DIS_8859-15", "ISO-8859-15" },
+    { "nl_BE.ISO_8859-1",  "ISO-8859-1" },
+    { "nl_NL.DIS_8859-15", "ISO-8859-15" },
+    { "nl_NL.ISO_8859-1",  "ISO-8859-1" },
+    { "no_NO.DIS_8859-15", "ISO-8859-15" },
+    { "no_NO.ISO_8859-1",  "ISO-8859-1" },
+    { "pl_PL.ISO_8859-2",  "ISO-8859-2" },
+    { "pt_PT.DIS_8859-15", "ISO-8859-15" },
+    { "pt_PT.ISO_8859-1",  "ISO-8859-1" },
+    { "ru_RU.CP866",       "CP866" },
+    { "ru_RU.ISO_8859-5",  "ISO-8859-5" },
+    { "ru_RU.KOI8-R",      "KOI8-R" },
+    { "ru_SU.CP866",       "CP866" },
+    { "ru_SU.ISO_8859-5",  "ISO-8859-5" },
+    { "ru_SU.KOI8-R",      "KOI8-R" },
+    { "sl_SI.ISO_8859-2",  "ISO-8859-2" },
+    { "sv_SE.DIS_8859-15", "ISO-8859-15" },
+    { "sv_SE.ISO_8859-1",  "ISO-8859-1" },
+    { "uk_UA.KOI8-U",      "KOI8-U" },
+    { "zh_CN.EUC",         "GB2312" },
+    { "zh_TW.BIG5",        "BIG5" },
+    { "zh_TW.Big5",        "BIG5" }
+#  define locale_table_defined
+# endif
+# if defined __DJGPP__                                      /* DOS / DJGPP 2.03 */
+    /* The encodings given here may not all be correct.
+       If you find that the encoding given for your language and
+       country is not the one your DOS machine actually uses, just
+       correct it in this file, and send a mail to
+       Juan Manuel Guerrero <juan.guerrero@gmx.de>
+       and <bug-gnulib@gnu.org>.  */
+    { "C",     "ASCII" },
+    { "ar",    "CP864" },
+    { "ar_AE", "CP864" },
+    { "ar_DZ", "CP864" },
+    { "ar_EG", "CP864" },
+    { "ar_IQ", "CP864" },
+    { "ar_IR", "CP864" },
+    { "ar_JO", "CP864" },
+    { "ar_KW", "CP864" },
+    { "ar_MA", "CP864" },
+    { "ar_OM", "CP864" },
+    { "ar_QA", "CP864" },
+    { "ar_SA", "CP864" },
+    { "ar_SY", "CP864" },
+    { "be",    "CP866" },
+    { "be_BE", "CP866" },
+    { "bg",    "CP866" }, /* not CP855 ?? */
+    { "bg_BG", "CP866" }, /* not CP855 ?? */
+    { "ca",    "CP850" },
+    { "ca_ES", "CP850" },
+    { "cs",    "CP852" },
+    { "cs_CZ", "CP852" },
+    { "da",    "CP865" }, /* not CP850 ?? */
+    { "da_DK", "CP865" }, /* not CP850 ?? */
+    { "de",    "CP850" },
+    { "de_AT", "CP850" },
+    { "de_CH", "CP850" },
+    { "de_DE", "CP850" },
+    { "el",    "CP869" },
+    { "el_GR", "CP869" },
+    { "en",    "CP850" },
+    { "en_AU", "CP850" }, /* not CP437 ?? */
+    { "en_CA", "CP850" },
+    { "en_GB", "CP850" },
+    { "en_NZ", "CP437" },
+    { "en_US", "CP437" },
+    { "en_ZA", "CP850" }, /* not CP437 ?? */
+    { "eo",    "CP850" },
+    { "eo_EO", "CP850" },
+    { "es",    "CP850" },
+    { "es_AR", "CP850" },
+    { "es_BO", "CP850" },
+    { "es_CL", "CP850" },
+    { "es_CO", "CP850" },
+    { "es_CR", "CP850" },
+    { "es_CU", "CP850" },
+    { "es_DO", "CP850" },
+    { "es_EC", "CP850" },
+    { "es_ES", "CP850" },
+    { "es_GT", "CP850" },
+    { "es_HN", "CP850" },
+    { "es_MX", "CP850" },
+    { "es_NI", "CP850" },
+    { "es_PA", "CP850" },
+    { "es_PE", "CP850" },
+    { "es_PY", "CP850" },
+    { "es_SV", "CP850" },
+    { "es_UY", "CP850" },
+    { "es_VE", "CP850" },
+    { "et",    "CP850" },
+    { "et_EE", "CP850" },
+    { "eu",    "CP850" },
+    { "eu_ES", "CP850" },
+    { "fi",    "CP850" },
+    { "fi_FI", "CP850" },
+    { "fr",    "CP850" },
+    { "fr_BE", "CP850" },
+    { "fr_CA", "CP850" },
+    { "fr_CH", "CP850" },
+    { "fr_FR", "CP850" },
+    { "ga",    "CP850" },
+    { "ga_IE", "CP850" },
+    { "gd",    "CP850" },
+    { "gd_GB", "CP850" },
+    { "gl",    "CP850" },
+    { "gl_ES", "CP850" },
+    { "he",    "CP862" },
+    { "he_IL", "CP862" },
+    { "hr",    "CP852" },
+    { "hr_HR", "CP852" },
+    { "hu",    "CP852" },
+    { "hu_HU", "CP852" },
+    { "id",    "CP850" }, /* not CP437 ?? */
+    { "id_ID", "CP850" }, /* not CP437 ?? */
+    { "is",    "CP861" }, /* not CP850 ?? */
+    { "is_IS", "CP861" }, /* not CP850 ?? */
+    { "it",    "CP850" },
+    { "it_CH", "CP850" },
+    { "it_IT", "CP850" },
+    { "ja",    "CP932" },
+    { "ja_JP", "CP932" },
+    { "kr",    "CP949" }, /* not CP934 ?? */
+    { "kr_KR", "CP949" }, /* not CP934 ?? */
+    { "lt",    "CP775" },
+    { "lt_LT", "CP775" },
+    { "lv",    "CP775" },
+    { "lv_LV", "CP775" },
+    { "mk",    "CP866" }, /* not CP855 ?? */
+    { "mk_MK", "CP866" }, /* not CP855 ?? */
+    { "mt",    "CP850" },
+    { "mt_MT", "CP850" },
+    { "nb",    "CP865" }, /* not CP850 ?? */
+    { "nb_NO", "CP865" }, /* not CP850 ?? */
+    { "nl",    "CP850" },
+    { "nl_BE", "CP850" },
+    { "nl_NL", "CP850" },
+    { "nn",    "CP865" }, /* not CP850 ?? */
+    { "nn_NO", "CP865" }, /* not CP850 ?? */
+    { "no",    "CP865" }, /* not CP850 ?? */
+    { "no_NO", "CP865" }, /* not CP850 ?? */
+    { "pl",    "CP852" },
+    { "pl_PL", "CP852" },
+    { "pt",    "CP850" },
+    { "pt_BR", "CP850" },
+    { "pt_PT", "CP850" },
+    { "ro",    "CP852" },
+    { "ro_RO", "CP852" },
+    { "ru",    "CP866" },
+    { "ru_RU", "CP866" },
+    { "sk",    "CP852" },
+    { "sk_SK", "CP852" },
+    { "sl",    "CP852" },
+    { "sl_SI", "CP852" },
+    { "sq",    "CP852" },
+    { "sq_AL", "CP852" },
+    { "sr",    "CP852" }, /* CP852 or CP866 or CP855 ?? */
+    { "sr_CS", "CP852" }, /* CP852 or CP866 or CP855 ?? */
+    { "sr_YU", "CP852" }, /* CP852 or CP866 or CP855 ?? */
+    { "sv",    "CP850" },
+    { "sv_SE", "CP850" },
+    { "th",    "CP874" },
+    { "th_TH", "CP874" },
+    { "tr",    "CP857" },
+    { "tr_TR", "CP857" },
+    { "uk",    "CP1125" },
+    { "uk_UA", "CP1125" },
+    { "zh_CN", "GBK" },
+    { "zh_TW", "CP950" } /* not CP938 ?? */
+#  define locale_table_defined
+# endif
+# ifndef locale_table_defined
+    /* Just a dummy entry, to avoid a C syntax error.  */
+    { "", "" }
+# endif
+  };
+
+#endif
+
+
+/* Determine the current locale's character encoding, and canonicalize it
+   into one of the canonical names listed below.
+   The result must not be freed; it is statically allocated.  The result
+   becomes invalid when setlocale() is used to change the global locale, or
+   when the value of one of the environment variables LC_ALL, LC_CTYPE, LANG
+   is changed; threads in multithreaded programs should not do this.
+   If the canonical name cannot be determined, the result is a non-canonical
+   name.  */
+
+#ifdef STATIC
+STATIC
+#endif
+const char *
+locale_charset (void)
+{
+  const char *codeset;
+
+  /* This function must be multithread-safe.  To achieve this without using
+     thread-local storage, we use a simple strcpy or memcpy to fill this static
+     buffer.  Filling it through, for example, strcpy + strcat would not be
+     guaranteed to leave the buffer's contents intact if another thread is
+     currently accessing it.  If necessary, the contents is first assembled in
+     a stack-allocated buffer.  */
+
+#if HAVE_LANGINFO_CODESET || defined WINDOWS_NATIVE || defined OS2
+
+# if HAVE_LANGINFO_CODESET
+
+  /* Most systems support nl_langinfo (CODESET) nowadays.  */
+  codeset = nl_langinfo (CODESET);
+
+#  ifdef __CYGWIN__
+  /* Cygwin < 1.7 does not have locales.  nl_langinfo (CODESET) always
+     returns "US-ASCII".  Return the suffix of the locale name from the
+     environment variables (if present) or the codepage as a number.  */
+  if (codeset != NULL && strcmp (codeset, "US-ASCII") == 0)
+    {
+      const char *locale;
+      static char resultbuf[2 + 10 + 1];
+
+      locale = getenv ("LC_ALL");
+      if (locale == NULL || locale[0] == '\0')
+        {
+          locale = getenv ("LC_CTYPE");
+          if (locale == NULL || locale[0] == '\0')
+            locale = getenv ("LANG");
+        }
+      if (locale != NULL && locale[0] != '\0')
+        {
+          /* If the locale name contains an encoding after the dot, return
+             it.  */
+          const char *dot = strchr (locale, '.');
+
+          if (dot != NULL)
+            {
+              const char *modifier;
+
+              dot++;
+              /* Look for the possible @... trailer and remove it, if any.  */
+              modifier = strchr (dot, '@');
+              if (modifier == NULL)
+                return dot;
+              if (modifier - dot < sizeof (resultbuf))
+                {
+                  /* This way of filling resultbuf is multithread-safe.  */
+                  memcpy (resultbuf, dot, modifier - dot);
+                  resultbuf [modifier - dot] = '\0';
+                  return resultbuf;
+                }
+            }
+        }
+
+      /* The Windows API has a function returning the locale's codepage as a
+         number: GetACP().  This encoding is used by Cygwin, unless the user
+         has set the environment variable CYGWIN=codepage:oem (which very few
+         people do).
+         Output directed to console windows needs to be converted (to
+         GetOEMCP() if the console is using a raster font, or to
+         GetConsoleOutputCP() if it is using a TrueType font).  Cygwin does
+         this conversion transparently (see winsup/cygwin/fhandler_console.cc),
+         converting to GetConsoleOutputCP().  This leads to correct results,
+         except when SetConsoleOutputCP has been called and a raster font is
+         in use.  */
+      {
+        char buf[2 + 10 + 1];
+
+        sprintf (buf, "CP%u", GetACP ());
+        strcpy (resultbuf, buf);
+        codeset = resultbuf;
+      }
+    }
+#  endif
+
+  if (codeset == NULL)
+    /* The canonical name cannot be determined.  */
+    codeset = "";
+
+# elif defined WINDOWS_NATIVE
+
+  char buf[2 + 10 + 1];
+  static char resultbuf[2 + 10 + 1];
+
+  /* The Windows API has a function returning the locale's codepage as
+     a number, but the value doesn't change according to what the
+     'setlocale' call specified.  So we use it as a last resort, in
+     case the string returned by 'setlocale' doesn't specify the
+     codepage.  */
+  char *current_locale = setlocale (LC_CTYPE, NULL);
+  char *pdot = strrchr (current_locale, '.');
+
+  if (pdot && 2 + strlen (pdot + 1) + 1 <= sizeof (buf))
+    sprintf (buf, "CP%s", pdot + 1);
+  else
+    {
+      /* The Windows API has a function returning the locale's codepage as a
+         number: GetACP().
+         When the output goes to a console window, it needs to be provided in
+         GetOEMCP() encoding if the console is using a raster font, or in
+         GetConsoleOutputCP() encoding if it is using a TrueType font.
+         But in GUI programs and for output sent to files and pipes, GetACP()
+         encoding is the best bet.  */
+      sprintf (buf, "CP%u", GetACP ());
+    }
+  /* For a locale name such as "French_France.65001", in Windows 10,
+     setlocale now returns "French_France.utf8" instead.  */
+  if (strcmp (buf + 2, "65001") == 0 || strcmp (buf + 2, "utf8") == 0)
+    codeset = "UTF-8";
+  else
+    {
+      strcpy (resultbuf, buf);
+      codeset = resultbuf;
+    }
+
+# elif defined OS2
+
+  const char *locale;
+  static char resultbuf[2 + 10 + 1];
+  ULONG cp[3];
+  ULONG cplen;
+
+  codeset = NULL;
+
+  /* Allow user to override the codeset, as set in the operating system,
+     with standard language environment variables.  */
+  locale = getenv ("LC_ALL");
+  if (locale == NULL || locale[0] == '\0')
+    {
+      locale = getenv ("LC_CTYPE");
+      if (locale == NULL || locale[0] == '\0')
+        locale = getenv ("LANG");
+    }
+  if (locale != NULL && locale[0] != '\0')
+    {
+      /* If the locale name contains an encoding after the dot, return it.  */
+      const char *dot = strchr (locale, '.');
+
+      if (dot != NULL)
+        {
+          const char *modifier;
+
+          dot++;
+          /* Look for the possible @... trailer and remove it, if any.  */
+          modifier = strchr (dot, '@');
+          if (modifier == NULL)
+            return dot;
+          if (modifier - dot < sizeof (resultbuf))
+            {
+              /* This way of filling resultbuf is multithread-safe.  */
+              memcpy (resultbuf, dot, modifier - dot);
+              resultbuf [modifier - dot] = '\0';
+              return resultbuf;
+            }
+        }
+
+      /* For the POSIX locale, don't use the system's codepage.  */
+      if (strcmp (locale, "C") == 0 || strcmp (locale, "POSIX") == 0)
+        codeset = "";
+    }
+
+  if (codeset == NULL)
+    {
+      /* OS/2 has a function returning the locale's codepage as a number.  */
+      if (DosQueryCp (sizeof (cp), cp, &cplen))
+        codeset = "";
+      else
+        {
+          char buf[2 + 10 + 1];
+
+          sprintf (buf, "CP%u", cp[0]);
+          strcpy (resultbuf, buf);
+          codeset = resultbuf;
+        }
+    }
+
+# else
+
+#  error "Add code for other platforms here."
+
+# endif
+
+  /* Resolve alias.  */
+  {
+# ifdef alias_table_defined
+    /* On some platforms, UTF-8 locales are the most frequently used ones.
+       Speed up the common case and slow down the less common cases by
+       testing for this case first.  */
+#  if defined __OpenBSD__ || (defined __APPLE__ && defined __MACH__) || defined __sun || defined __CYGWIN__
+    if (strcmp (codeset, "UTF-8") == 0)
+      goto done_table_lookup;
+    else
+#  endif
+      {
+        const struct table_entry * const table = alias_table;
+        size_t const table_size =
+          sizeof (alias_table) / sizeof (struct table_entry);
+        /* The table is sorted.  Perform a binary search.  */
+        size_t hi = table_size;
+        size_t lo = 0;
+        while (lo < hi)
+          {
+            /* Invariant:
+               for i < lo, strcmp (table[i].alias, codeset) < 0,
+               for i >= hi, strcmp (table[i].alias, codeset) > 0.  */
+            size_t mid = (hi + lo) >> 1; /* >= lo, < hi */
+            int cmp = strcmp (table[mid].alias, codeset);
+            if (cmp < 0)
+              lo = mid + 1;
+            else if (cmp > 0)
+              hi = mid;
+            else
+              {
+                /* Found an i with
+                     strcmp (table[i].alias, codeset) == 0.  */
+                codeset = table[mid].canonical;
+                goto done_table_lookup;
+              }
+          }
+      }
+    if (0)
+      done_table_lookup: ;
+    else
+# endif
+      {
+        /* Did not find it in the table.  */
+        /* On Mac OS X, all modern locales use the UTF-8 encoding.
+           BeOS and Haiku have a single locale, and it has UTF-8 encoding.  */
+# if (defined __APPLE__ && defined __MACH__) || defined __BEOS__ || defined __HAIKU__
+        codeset = "UTF-8";
+# else
+        /* Don't return an empty string.  GNU libc and GNU libiconv interpret
+           the empty string as denoting "the locale's character encoding",
+           thus GNU libiconv would call this function a second time.  */
+        if (codeset[0] == '\0')
+          codeset = "ASCII";
+# endif
+      }
+  }
+
+#else
+
+  /* On old systems which lack it, use setlocale or getenv.  */
+  const char *locale = NULL;
+
+  /* But most old systems don't have a complete set of locales.  Some
+     (like DJGPP) have only the C locale.  Therefore we don't use setlocale
+     here; it would return "C" when it doesn't support the locale name the
+     user has set.  */
+# if 0
+  locale = setlocale (LC_CTYPE, NULL);
+# endif
+  if (locale == NULL || locale[0] == '\0')
+    {
+      locale = getenv ("LC_ALL");
+      if (locale == NULL || locale[0] == '\0')
+        {
+          locale = getenv ("LC_CTYPE");
+          if (locale == NULL || locale[0] == '\0')
+            locale = getenv ("LANG");
+            if (locale == NULL)
+              locale = "";
+        }
+    }
+
+  /* Map locale name to canonical encoding name.  */
+  {
+# ifdef locale_table_defined
+    const struct table_entry * const table = locale_table;
+    size_t const table_size =
+      sizeof (locale_table) / sizeof (struct table_entry);
+    /* The table is sorted.  Perform a binary search.  */
+    size_t hi = table_size;
+    size_t lo = 0;
+    while (lo < hi)
+      {
+        /* Invariant:
+           for i < lo, strcmp (table[i].locale, locale) < 0,
+           for i >= hi, strcmp (table[i].locale, locale) > 0.  */
+        size_t mid = (hi + lo) >> 1; /* >= lo, < hi */
+        int cmp = strcmp (table[mid].locale, locale);
+        if (cmp < 0)
+          lo = mid + 1;
+        else if (cmp > 0)
+          hi = mid;
+        else
+          {
+            /* Found an i with
+                 strcmp (table[i].locale, locale) == 0.  */
+            codeset = table[mid].canonical;
+            goto done_table_lookup;
+          }
+      }
+    if (0)
+      done_table_lookup: ;
+    else
+# endif
+      {
+        /* Did not find it in the table.  */
+        /* On Mac OS X, all modern locales use the UTF-8 encoding.
+           BeOS and Haiku have a single locale, and it has UTF-8 encoding.  */
+# if (defined __APPLE__ && defined __MACH__) || defined __BEOS__ || defined __HAIKU__
+        codeset = "UTF-8";
+# else
+        /* The canonical name cannot be determined.  */
+        /* Don't return an empty string.  GNU libc and GNU libiconv interpret
+           the empty string as denoting "the locale's character encoding",
+           thus GNU libiconv would call this function a second time.  */
+        codeset = "ASCII";
+# endif
+      }
+  }
+
+#endif
+
+#ifdef DARWIN7
+  /* Mac OS X sets MB_CUR_MAX to 1 when LC_ALL=C, and "UTF-8"
+     (the default codeset) does not work when MB_CUR_MAX is 1.  */
+  if (strcmp (codeset, "UTF-8") == 0 && MB_CUR_MAX_L (uselocale (NULL)) <= 1)
+    codeset = "ASCII";
+#endif
+
+  return codeset;
+}
diff --git a/src/grep/lib/localcharset.h b/src/grep/lib/localcharset.h
new file mode 100644
index 0000000..0ff4954
--- /dev/null
+++ b/src/grep/lib/localcharset.h
@@ -0,0 +1,137 @@
+/* Determine a canonical name for the current locale's character encoding.
+   Copyright (C) 2000-2003, 2009-2021 Free Software Foundation, Inc.
+   This file is part of the GNU CHARSET Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LOCALCHARSET_H
+#define _LOCALCHARSET_H
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Determine the current locale's character encoding, and canonicalize it
+   into one of the canonical names listed below.
+   The result must not be freed; it is statically allocated.  The result
+   becomes invalid when setlocale() is used to change the global locale, or
+   when the value of one of the environment variables LC_ALL, LC_CTYPE, LANG
+   is changed; threads in multithreaded programs should not do this.
+   If the canonical name cannot be determined, the result is a non-canonical
+   name.  */
+extern const char * locale_charset (void);
+
+/* About GNU canonical names for character encodings:
+
+   Every canonical name must be supported by GNU libiconv.  Support by GNU libc
+   is also desirable.
+
+   The name is case insensitive.  Usually an upper case MIME charset name is
+   preferred.
+
+   The current list of these GNU canonical names is:
+
+       name              MIME?             used by which systems
+                                    (darwin = Mac OS X, windows = native Windows)
+
+   ASCII, ANSI_X3.4-1968       glibc solaris freebsd netbsd darwin minix cygwin
+   ISO-8859-1              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin zos
+   ISO-8859-2              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin zos
+   ISO-8859-3              Y   glibc solaris cygwin
+   ISO-8859-4              Y   hpux osf solaris freebsd netbsd openbsd darwin
+   ISO-8859-5              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin zos
+   ISO-8859-6              Y   glibc aix hpux solaris cygwin
+   ISO-8859-7              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin zos
+   ISO-8859-8              Y   glibc aix hpux osf solaris cygwin zos
+   ISO-8859-9              Y   glibc aix hpux irix osf solaris freebsd darwin cygwin zos
+   ISO-8859-13                 glibc hpux solaris freebsd netbsd openbsd darwin cygwin
+   ISO-8859-14                 glibc cygwin
+   ISO-8859-15                 glibc aix irix osf solaris freebsd netbsd openbsd darwin cygwin
+   KOI8-R                  Y   glibc hpux solaris freebsd netbsd openbsd darwin
+   KOI8-U                  Y   glibc freebsd netbsd openbsd darwin cygwin
+   KOI8-T                      glibc
+   CP437                       dos
+   CP775                       dos
+   CP850                       aix osf dos
+   CP852                       dos
+   CP855                       dos
+   CP856                       aix
+   CP857                       dos
+   CP861                       dos
+   CP862                       dos
+   CP864                       dos
+   CP865                       dos
+   CP866                       freebsd netbsd openbsd darwin dos
+   CP869                       dos
+   CP874                       windows dos
+   CP922                       aix
+   CP932                       aix cygwin windows dos
+   CP943                       aix zos
+   CP949                       osf darwin windows dos
+   CP950                       windows dos
+   CP1046                      aix
+   CP1124                      aix
+   CP1125                      dos
+   CP1129                      aix
+   CP1131                      freebsd darwin
+   CP1250                      windows
+   CP1251                      glibc hpux solaris freebsd netbsd openbsd darwin cygwin windows
+   CP1252                      aix windows
+   CP1253                      windows
+   CP1254                      windows
+   CP1255                      glibc windows
+   CP1256                      windows
+   CP1257                      windows
+   GB2312                  Y   glibc aix hpux irix solaris freebsd netbsd darwin cygwin zos
+   EUC-JP                  Y   glibc aix hpux irix osf solaris freebsd netbsd darwin cygwin
+   EUC-KR                  Y   glibc aix hpux irix osf solaris freebsd netbsd darwin cygwin zos
+   EUC-TW                      glibc aix hpux irix osf solaris netbsd
+   BIG5                    Y   glibc aix hpux osf solaris freebsd netbsd darwin cygwin zos
+   BIG5-HKSCS                  glibc hpux solaris netbsd darwin
+   GBK                         glibc aix osf solaris freebsd darwin cygwin windows dos
+   GB18030                     glibc hpux solaris freebsd netbsd darwin
+   SHIFT_JIS               Y   hpux osf solaris freebsd netbsd darwin
+   JOHAB                       glibc solaris windows
+   TIS-620                     glibc aix hpux osf solaris cygwin zos
+   VISCII                  Y   glibc
+   TCVN5712-1                  glibc
+   ARMSCII-8                   glibc freebsd netbsd darwin
+   GEORGIAN-PS                 glibc cygwin
+   PT154                       glibc netbsd cygwin
+   HP-ROMAN8                   hpux
+   HP-ARABIC8                  hpux
+   HP-GREEK8                   hpux
+   HP-HEBREW8                  hpux
+   HP-TURKISH8                 hpux
+   HP-KANA8                    hpux
+   DEC-KANJI                   osf
+   DEC-HANYU                   osf
+   UTF-8                   Y   glibc aix hpux osf solaris netbsd darwin cygwin zos
+
+   Note: Names which are not marked as being a MIME name should not be used in
+   Internet protocols for information interchange (mail, news, etc.).
+
+   Note: ASCII and ANSI_X3.4-1968 are synonymous canonical names.  Applications
+   must understand both names and treat them as equivalent.
+ */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _LOCALCHARSET_H */
diff --git a/src/grep/lib/locale.in.h b/src/grep/lib/locale.in.h
new file mode 100644
index 0000000..1063070
--- /dev/null
+++ b/src/grep/lib/locale.in.h
@@ -0,0 +1,305 @@
+/* A POSIX <locale.h>.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if (defined _WIN32 && !defined __CYGWIN__ && defined __need_locale_t) \
+    || defined _GL_ALREADY_INCLUDING_LOCALE_H
+
+/* Special invocation convention:
+   - Inside mingw header files,
+   - To handle Solaris header files (through Solaris 10) when combined
+     with gettext's libintl.h.  */
+
+#@INCLUDE_NEXT@ @NEXT_LOCALE_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_LOCALE_H
+
+#define _GL_ALREADY_INCLUDING_LOCALE_H
+
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_LOCALE_H@
+
+#undef _GL_ALREADY_INCLUDING_LOCALE_H
+
+#ifndef _@GUARD_PREFIX@_LOCALE_H
+#define _@GUARD_PREFIX@_LOCALE_H
+
+/* NetBSD 5.0 mis-defines NULL.  */
+#include <stddef.h>
+
+/* Mac OS X 10.5 defines the locale_t type in <xlocale.h>.  */
+#if @HAVE_XLOCALE_H@
+# include <xlocale.h>
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+/* The LC_MESSAGES locale category is specified in POSIX, but not in ISO C.
+   On systems that don't define it, use the same value as GNU libintl.  */
+#if !defined LC_MESSAGES
+# define LC_MESSAGES 1729
+#endif
+
+/* On native Windows with MSVC, 'struct lconv' lacks the members int_p_* and
+   int_n_*.  Instead of overriding 'struct lconv', merely define these member
+   names as macros.  This avoids trouble in C++ mode.  */
+#if defined _MSC_VER
+# define int_p_cs_precedes   p_cs_precedes
+# define int_p_sign_posn     p_sign_posn
+# define int_p_sep_by_space  p_sep_by_space
+# define int_n_cs_precedes   n_cs_precedes
+# define int_n_sign_posn     n_sign_posn
+# define int_n_sep_by_space  n_sep_by_space
+#endif
+
+/* Bionic libc's 'struct lconv' is just a dummy.  */
+#if @REPLACE_STRUCT_LCONV@
+# define lconv rpl_lconv
+struct lconv
+{
+  /* All 'char *' are actually 'const char *'.  */
+
+  /* Members that depend on the LC_NUMERIC category of the locale.  See
+     <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap07.html#tag_07_03_04> */
+
+  /* Symbol used as decimal point.  */
+  char *decimal_point;
+  /* Symbol used to separate groups of digits to the left of the decimal
+     point.  */
+  char *thousands_sep;
+  /* Definition of the size of groups of digits to the left of the decimal
+     point.  */
+  char *grouping;
+
+  /* Members that depend on the LC_MONETARY category of the locale.  See
+     <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap07.html#tag_07_03_03> */
+
+  /* Symbol used as decimal point.  */
+  char *mon_decimal_point;
+  /* Symbol used to separate groups of digits to the left of the decimal
+     point.  */
+  char *mon_thousands_sep;
+  /* Definition of the size of groups of digits to the left of the decimal
+     point.  */
+  char *mon_grouping;
+  /* Sign used to indicate a value >= 0.  */
+  char *positive_sign;
+  /* Sign used to indicate a value < 0.  */
+  char *negative_sign;
+
+  /* For formatting local currency.  */
+  /* Currency symbol (3 characters) followed by separator (1 character).  */
+  char *currency_symbol;
+  /* Number of digits after the decimal point.  */
+  char frac_digits;
+  /* For values >= 0: 1 if the currency symbol precedes the number, 0 if it
+     comes after the number.  */
+  char p_cs_precedes;
+  /* For values >= 0: Position of the sign.  */
+  char p_sign_posn;
+  /* For values >= 0: Placement of spaces between currency symbol, sign, and
+     number.  */
+  char p_sep_by_space;
+  /* For values < 0: 1 if the currency symbol precedes the number, 0 if it
+     comes after the number.  */
+  char n_cs_precedes;
+  /* For values < 0: Position of the sign.  */
+  char n_sign_posn;
+  /* For values < 0: Placement of spaces between currency symbol, sign, and
+     number.  */
+  char n_sep_by_space;
+
+  /* For formatting international currency.  */
+  /* Currency symbol (3 characters) followed by separator (1 character).  */
+  char *int_curr_symbol;
+  /* Number of digits after the decimal point.  */
+  char int_frac_digits;
+  /* For values >= 0: 1 if the currency symbol precedes the number, 0 if it
+     comes after the number.  */
+  char int_p_cs_precedes;
+  /* For values >= 0: Position of the sign.  */
+  char int_p_sign_posn;
+  /* For values >= 0: Placement of spaces between currency symbol, sign, and
+     number.  */
+  char int_p_sep_by_space;
+  /* For values < 0: 1 if the currency symbol precedes the number, 0 if it
+     comes after the number.  */
+  char int_n_cs_precedes;
+  /* For values < 0: Position of the sign.  */
+  char int_n_sign_posn;
+  /* For values < 0: Placement of spaces between currency symbol, sign, and
+     number.  */
+  char int_n_sep_by_space;
+};
+#endif
+
+#if @GNULIB_LOCALECONV@
+# if @REPLACE_LOCALECONV@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef localeconv
+#   define localeconv rpl_localeconv
+#  endif
+_GL_FUNCDECL_RPL (localeconv, struct lconv *, (void));
+_GL_CXXALIAS_RPL (localeconv, struct lconv *, (void));
+# else
+_GL_CXXALIAS_SYS (localeconv, struct lconv *, (void));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (localeconv);
+# endif
+#elif @REPLACE_STRUCT_LCONV@
+# undef localeconv
+# define localeconv localeconv_used_without_requesting_gnulib_module_localeconv
+#elif defined GNULIB_POSIXCHECK
+# undef localeconv
+# if HAVE_RAW_DECL_LOCALECONV
+_GL_WARN_ON_USE (localeconv,
+                 "localeconv returns too few information on some platforms - "
+                 "use gnulib module localeconv for portability");
+# endif
+#endif
+
+#if @GNULIB_SETLOCALE@
+# if @REPLACE_SETLOCALE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef setlocale
+#   define setlocale rpl_setlocale
+#   define GNULIB_defined_setlocale 1
+#  endif
+_GL_FUNCDECL_RPL (setlocale, char *, (int category, const char *locale));
+_GL_CXXALIAS_RPL (setlocale, char *, (int category, const char *locale));
+# else
+_GL_CXXALIAS_SYS (setlocale, char *, (int category, const char *locale));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (setlocale);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef setlocale
+# if HAVE_RAW_DECL_SETLOCALE
+_GL_WARN_ON_USE (setlocale, "setlocale works differently on native Windows - "
+                 "use gnulib module setlocale for portability");
+# endif
+#endif
+
+#if @GNULIB_SETLOCALE_NULL@
+/* Included here for convenience.  */
+# include "setlocale_null.h"
+#endif
+
+#if /*@GNULIB_NEWLOCALE@ ||*/ (@GNULIB_LOCALENAME@ && @LOCALENAME_ENHANCE_LOCALE_FUNCS@ && @HAVE_NEWLOCALE@)
+# if @REPLACE_NEWLOCALE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef newlocale
+#   define newlocale rpl_newlocale
+#   define GNULIB_defined_newlocale 1
+#  endif
+_GL_FUNCDECL_RPL (newlocale, locale_t,
+                  (int category_mask, const char *name, locale_t base)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (newlocale, locale_t,
+                  (int category_mask, const char *name, locale_t base));
+# else
+#  if @HAVE_NEWLOCALE@
+_GL_CXXALIAS_SYS (newlocale, locale_t,
+                  (int category_mask, const char *name, locale_t base));
+#  endif
+# endif
+# if @HAVE_NEWLOCALE@
+_GL_CXXALIASWARN (newlocale);
+# endif
+# if @HAVE_NEWLOCALE@ || @REPLACE_NEWLOCALE@
+#  ifndef HAVE_WORKING_NEWLOCALE
+#   define HAVE_WORKING_NEWLOCALE 1
+#  endif
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef newlocale
+# if HAVE_RAW_DECL_NEWLOCALE
+_GL_WARN_ON_USE (newlocale, "newlocale is not portable");
+# endif
+#endif
+
+#if @GNULIB_DUPLOCALE@ || (@GNULIB_LOCALENAME@ && @LOCALENAME_ENHANCE_LOCALE_FUNCS@ && @HAVE_DUPLOCALE@)
+# if @REPLACE_DUPLOCALE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef duplocale
+#   define duplocale rpl_duplocale
+#   define GNULIB_defined_duplocale 1
+#  endif
+_GL_FUNCDECL_RPL (duplocale, locale_t, (locale_t locale) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (duplocale, locale_t, (locale_t locale));
+# else
+#  if @HAVE_DUPLOCALE@
+_GL_CXXALIAS_SYS (duplocale, locale_t, (locale_t locale));
+#  endif
+# endif
+# if @HAVE_DUPLOCALE@
+_GL_CXXALIASWARN (duplocale);
+# endif
+# if @HAVE_DUPLOCALE@ || @REPLACE_DUPLOCALE@
+#  ifndef HAVE_WORKING_DUPLOCALE
+#   define HAVE_WORKING_DUPLOCALE 1
+#  endif
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef duplocale
+# if HAVE_RAW_DECL_DUPLOCALE
+_GL_WARN_ON_USE (duplocale, "duplocale is buggy on some glibc systems - "
+                 "use gnulib module duplocale for portability");
+# endif
+#endif
+
+#if /*@GNULIB_FREELOCALE@ ||*/ (@GNULIB_LOCALENAME@ && @LOCALENAME_ENHANCE_LOCALE_FUNCS@ && @HAVE_FREELOCALE@)
+# if @REPLACE_FREELOCALE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef freelocale
+#   define freelocale rpl_freelocale
+#   define GNULIB_defined_freelocale 1
+#  endif
+_GL_FUNCDECL_RPL (freelocale, void, (locale_t locale) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (freelocale, void, (locale_t locale));
+# else
+#  if @HAVE_FREELOCALE@
+/* Need to cast, because on FreeBSD and Mac OS X 10.13, the return type is
+                                   int.  */
+_GL_CXXALIAS_SYS_CAST (freelocale, void, (locale_t locale));
+#  endif
+# endif
+# if @HAVE_FREELOCALE@
+_GL_CXXALIASWARN (freelocale);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef freelocale
+# if HAVE_RAW_DECL_FREELOCALE
+_GL_WARN_ON_USE (freelocale, "freelocale is not portable");
+# endif
+#endif
+
+#endif /* _@GUARD_PREFIX@_LOCALE_H */
+#endif /* _@GUARD_PREFIX@_LOCALE_H */
+#endif /* !(__need_locale_t || _GL_ALREADY_INCLUDING_LOCALE_H) */
diff --git a/src/grep/lib/localeconv.c b/src/grep/lib/localeconv.c
new file mode 100644
index 0000000..25e95a1
--- /dev/null
+++ b/src/grep/lib/localeconv.c
@@ -0,0 +1,103 @@
+/* Query locale dependent information for formatting numbers.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <locale.h>
+
+#if HAVE_STRUCT_LCONV_DECIMAL_POINT
+
+/* Override for platforms where 'struct lconv' lacks the int_p_*, int_n_*
+   members.  */
+
+struct lconv *
+localeconv (void)
+{
+  static struct lconv result;
+# undef lconv
+# undef localeconv
+  struct lconv *sys_result = localeconv ();
+
+  result.decimal_point = sys_result->decimal_point;
+  result.thousands_sep = sys_result->thousands_sep;
+  result.grouping = sys_result->grouping;
+  result.mon_decimal_point = sys_result->mon_decimal_point;
+  result.mon_thousands_sep = sys_result->mon_thousands_sep;
+  result.mon_grouping = sys_result->mon_grouping;
+  result.positive_sign = sys_result->positive_sign;
+  result.negative_sign = sys_result->negative_sign;
+  result.currency_symbol = sys_result->currency_symbol;
+  result.frac_digits = sys_result->frac_digits;
+  result.p_cs_precedes = sys_result->p_cs_precedes;
+  result.p_sign_posn = sys_result->p_sign_posn;
+  result.p_sep_by_space = sys_result->p_sep_by_space;
+  result.n_cs_precedes = sys_result->n_cs_precedes;
+  result.n_sign_posn = sys_result->n_sign_posn;
+  result.n_sep_by_space = sys_result->n_sep_by_space;
+  result.int_curr_symbol = sys_result->int_curr_symbol;
+  result.int_frac_digits = sys_result->int_frac_digits;
+  result.int_p_cs_precedes = sys_result->p_cs_precedes;
+  result.int_p_sign_posn = sys_result->p_sign_posn;
+  result.int_p_sep_by_space = sys_result->p_sep_by_space;
+  result.int_n_cs_precedes = sys_result->n_cs_precedes;
+  result.int_n_sign_posn = sys_result->n_sign_posn;
+  result.int_n_sep_by_space = sys_result->n_sep_by_space;
+
+  return &result;
+}
+
+#else
+
+/* Override for platforms where 'struct lconv' is a dummy.  */
+
+# include <limits.h>
+
+struct lconv *
+localeconv (void)
+{
+  static /*const*/ struct lconv result =
+    {
+      /* decimal_point */ ".",
+      /* thousands_sep */ "",
+      /* grouping */ "",
+      /* mon_decimal_point */ "",
+      /* mon_thousands_sep */ "",
+      /* mon_grouping */ "",
+      /* positive_sign */ "",
+      /* negative_sign */ "",
+      /* currency_symbol */ "",
+      /* frac_digits */ CHAR_MAX,
+      /* p_cs_precedes */ CHAR_MAX,
+      /* p_sign_posn */ CHAR_MAX,
+      /* p_sep_by_space */ CHAR_MAX,
+      /* n_cs_precedes */ CHAR_MAX,
+      /* n_sign_posn */ CHAR_MAX,
+      /* n_sep_by_space */ CHAR_MAX,
+      /* int_curr_symbol */ "",
+      /* int_frac_digits */ CHAR_MAX,
+      /* int_p_cs_precedes */ CHAR_MAX,
+      /* int_p_sign_posn */ CHAR_MAX,
+      /* int_p_sep_by_space */ CHAR_MAX,
+      /* int_n_cs_precedes */ CHAR_MAX,
+      /* int_n_sign_posn */ CHAR_MAX,
+      /* int_n_sep_by_space */ CHAR_MAX
+    };
+
+  return &result;
+}
+
+#endif
diff --git a/src/grep/lib/localeinfo.c b/src/grep/lib/localeinfo.c
new file mode 100644
index 0000000..4996018
--- /dev/null
+++ b/src/grep/lib/localeinfo.c
@@ -0,0 +1,151 @@
+/* locale information
+
+   Copyright 2016-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+/* Written by Paul Eggert.  */
+
+#include <config.h>
+
+#include <localeinfo.h>
+
+#include <verify.h>
+
+#include <limits.h>
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wctype.h>
+
+/* The sbclen implementation relies on this.  */
+verify (MB_LEN_MAX <= SCHAR_MAX);
+
+/* Return true if the locale uses UTF-8.  */
+
+static bool
+is_using_utf8 (void)
+{
+  wchar_t wc;
+  mbstate_t mbs = {0};
+  return mbrtowc (&wc, "\xc4\x80", 2, &mbs) == 2 && wc == 0x100;
+}
+
+/* Return true if the locale is compatible enough with the C locale so
+   that the locale is single-byte, bytes are in collating-sequence
+   order, and there are no multi-character collating elements.  */
+
+static bool
+using_simple_locale (bool multibyte)
+{
+  /* The native character set is known to be compatible with
+     the C locale.  The following test isn't perfect, but it's good
+     enough in practice, as only ASCII and EBCDIC are in common use
+     and this test correctly accepts ASCII and rejects EBCDIC.  */
+  enum { native_c_charset =
+    ('\b' == 8 && '\t' == 9 && '\n' == 10 && '\v' == 11 && '\f' == 12
+     && '\r' == 13 && ' ' == 32 && '!' == 33 && '"' == 34 && '#' == 35
+     && '%' == 37 && '&' == 38 && '\'' == 39 && '(' == 40 && ')' == 41
+     && '*' == 42 && '+' == 43 && ',' == 44 && '-' == 45 && '.' == 46
+     && '/' == 47 && '0' == 48 && '9' == 57 && ':' == 58 && ';' == 59
+     && '<' == 60 && '=' == 61 && '>' == 62 && '?' == 63 && 'A' == 65
+     && 'Z' == 90 && '[' == 91 && '\\' == 92 && ']' == 93 && '^' == 94
+     && '_' == 95 && 'a' == 97 && 'z' == 122 && '{' == 123 && '|' == 124
+     && '}' == 125 && '~' == 126)
+  };
+
+  if (!native_c_charset || multibyte)
+    return false;
+
+  /* As a heuristic, use strcoll to compare native character order.
+     If this agrees with byte order the locale should be simple.
+     This heuristic should work for all known practical locales,
+     although it would be invalid for artificially-constructed locales
+     where the native order is the collating-sequence order but there
+     are multi-character collating elements.  */
+  for (int i = 0; i < UCHAR_MAX; i++)
+    if (0 <= strcoll (((char []) {i, 0}), ((char []) {i + 1, 0})))
+      return false;
+
+  return true;
+}
+
+/* Initialize *LOCALEINFO from the current locale.  */
+
+void
+init_localeinfo (struct localeinfo *localeinfo)
+{
+  localeinfo->multibyte = MB_CUR_MAX > 1;
+  localeinfo->simple = using_simple_locale (localeinfo->multibyte);
+  localeinfo->using_utf8 = is_using_utf8 ();
+
+  for (int i = CHAR_MIN; i <= CHAR_MAX; i++)
+    {
+      char c = i;
+      unsigned char uc = i;
+      mbstate_t s = {0};
+      wchar_t wc;
+      size_t len = mbrtowc (&wc, &c, 1, &s);
+      localeinfo->sbclen[uc] = len <= 1 ? 1 : - (int) - len;
+      localeinfo->sbctowc[uc] = len <= 1 ? wc : WEOF;
+    }
+}
+
+/* The set of wchar_t values C such that there's a useful locale
+   somewhere where C != towupper (C) && C != towlower (towupper (C)).
+   For example, 0x00B5 (U+00B5 MICRO SIGN) is in this table, because
+   towupper (0x00B5) == 0x039C (U+039C GREEK CAPITAL LETTER MU), and
+   towlower (0x039C) == 0x03BC (U+03BC GREEK SMALL LETTER MU).  */
+static short const lonesome_lower[] =
+  {
+    0x00B5, 0x0131, 0x017F, 0x01C5, 0x01C8, 0x01CB, 0x01F2, 0x0345,
+    0x03C2, 0x03D0, 0x03D1, 0x03D5, 0x03D6, 0x03F0, 0x03F1,
+
+    /* U+03F2 GREEK LUNATE SIGMA SYMBOL lacks a specific uppercase
+       counterpart in locales predating Unicode 4.0.0 (April 2003).  */
+    0x03F2,
+
+    0x03F5, 0x1E9B, 0x1FBE,
+  };
+
+/* Verify that the worst case fits.  This is 1 for towupper, 1 for
+   towlower, and 1 for each entry in LONESOME_LOWER.  */
+verify (1 + 1 + sizeof lonesome_lower / sizeof *lonesome_lower
+        <= CASE_FOLDED_BUFSIZE);
+
+/* Find the characters equal to C after case-folding, other than C
+   itself, and store them into FOLDED.  Return the number of characters
+   stored; this is zero if C is WEOF.  */
+
+int
+case_folded_counterparts (wint_t c, wchar_t folded[CASE_FOLDED_BUFSIZE])
+{
+  int i;
+  int n = 0;
+  wint_t uc = towupper (c);
+  wint_t lc = towlower (uc);
+  if (uc != c)
+    folded[n++] = uc;
+  if (lc != uc && lc != c && towupper (lc) == uc)
+    folded[n++] = lc;
+  for (i = 0; i < sizeof lonesome_lower / sizeof *lonesome_lower; i++)
+    {
+      wint_t li = lonesome_lower[i];
+      if (li != lc && li != uc && li != c && towupper (li) == uc)
+        folded[n++] = li;
+    }
+  return n;
+}
diff --git a/src/grep/lib/localeinfo.h b/src/grep/lib/localeinfo.h
new file mode 100644
index 0000000..5013612
--- /dev/null
+++ b/src/grep/lib/localeinfo.h
@@ -0,0 +1,60 @@
+/* locale information
+
+   Copyright 2016-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+/* Written by Paul Eggert.  */
+
+#include <limits.h>
+#include <stdbool.h>
+#include <wchar.h>
+
+struct localeinfo
+{
+  /* MB_CUR_MAX > 1.  */
+  bool multibyte;
+
+  /* The locale is simple, like the C locale.  These locales can be
+     processed more efficiently, as they are single-byte, their native
+     character set is in collating-sequence order, and they do not
+     have multi-character collating elements.  */
+  bool simple;
+
+  /* The locale uses UTF-8.  */
+  bool using_utf8;
+
+  /* An array indexed by byte values B that contains 1 if B is a
+     single-byte character, -1 if B is an encoding error, and -2 if B
+     is the leading byte of a multibyte character that contains more
+     than one byte.  */
+  signed char sbclen[UCHAR_MAX + 1];
+
+  /* An array indexed by byte values B that contains the corresponding
+     wide character (if any) for B if sbclen[B] == 1.  WEOF means the
+     byte is not a valid single-byte character, i.e., sbclen[B] == -1
+     or -2.  */
+  wint_t sbctowc[UCHAR_MAX + 1];
+};
+
+extern void init_localeinfo (struct localeinfo *);
+
+/* Maximum number of characters that can be the case-folded
+   counterparts of a single character, not counting the character
+   itself.  This is a generous upper bound.  */
+enum { CASE_FOLDED_BUFSIZE = 32 };
+
+extern int case_folded_counterparts (wint_t, wchar_t[CASE_FOLDED_BUFSIZE]);
diff --git a/src/grep/lib/lseek.c b/src/grep/lib/lseek.c
new file mode 100644
index 0000000..0042546
--- /dev/null
+++ b/src/grep/lib/lseek.c
@@ -0,0 +1,71 @@
+/* An lseek() function that detects pipes.
+   Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Windows platforms.  */
+/* Get GetFileType.  */
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#else
+# include <sys/stat.h>
+#endif
+#include <errno.h>
+
+#undef lseek
+
+off_t
+rpl_lseek (int fd, off_t offset, int whence)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* mingw lseek mistakenly succeeds on pipes, sockets, and terminals.  */
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  if (h == INVALID_HANDLE_VALUE)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  if (GetFileType (h) != FILE_TYPE_DISK)
+    {
+      errno = ESPIPE;
+      return -1;
+    }
+#else
+  /* BeOS lseek mistakenly succeeds on pipes...  */
+  struct stat statbuf;
+  if (fstat (fd, &statbuf) < 0)
+    return -1;
+  if (!S_ISREG (statbuf.st_mode))
+    {
+      errno = ESPIPE;
+      return -1;
+    }
+#endif
+#if _GL_WINDOWS_64_BIT_OFF_T || (defined __MINGW32__ && defined _FILE_OFFSET_BITS && (_FILE_OFFSET_BITS == 64))
+  return _lseeki64 (fd, offset, whence);
+#else
+  return lseek (fd, offset, whence);
+#endif
+}
diff --git a/src/grep/lib/lstat.c b/src/grep/lib/lstat.c
new file mode 100644
index 0000000..7de0bf1
--- /dev/null
+++ b/src/grep/lib/lstat.c
@@ -0,0 +1,104 @@
+/* Work around a bug of lstat on some systems
+
+   Copyright (C) 1997-2006, 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+/* If the user's config.h happens to include <sys/stat.h>, let it include only
+   the system's <sys/stat.h> here, so that orig_lstat doesn't recurse to
+   rpl_lstat.  */
+#define __need_system_sys_stat_h
+#include <config.h>
+
+#if !HAVE_LSTAT
+/* On systems that lack symlinks, our replacement <sys/stat.h> already
+   defined lstat as stat, so there is nothing further to do other than
+   avoid an empty file.  */
+typedef int dummy;
+#else /* HAVE_LSTAT */
+
+/* Get the original definition of lstat.  It might be defined as a macro.  */
+# include <sys/types.h>
+# include <sys/stat.h>
+# undef __need_system_sys_stat_h
+
+static int
+orig_lstat (const char *filename, struct stat *buf)
+{
+  return lstat (filename, buf);
+}
+
+/* Specification.  */
+# ifdef __osf__
+/* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc
+   eliminates this include because of the preliminary #include <sys/stat.h>
+   above.  */
+#  include "sys/stat.h"
+# else
+#  include <sys/stat.h>
+# endif
+
+# include "stat-time.h"
+
+# include <string.h>
+# include <errno.h>
+
+/* lstat works differently on Linux and Solaris systems.  POSIX (see
+   "pathname resolution" in the glossary) requires that programs like
+   'ls' take into consideration the fact that FILE has a trailing slash
+   when FILE is a symbolic link.  On Linux and Solaris 10 systems, the
+   lstat function already has the desired semantics (in treating
+   'lstat ("symlink/", sbuf)' just like 'lstat ("symlink/.", sbuf)',
+   but on Solaris 9 and earlier it does not.
+
+   If FILE has a trailing slash and specifies a symbolic link,
+   then use stat() to get more info on the referent of FILE.
+   If the referent is a non-directory, then set errno to ENOTDIR
+   and return -1.  Otherwise, return stat's result.  */
+
+int
+rpl_lstat (const char *file, struct stat *sbuf)
+{
+  int result = orig_lstat (file, sbuf);
+
+  /* This replacement file can blindly check against '/' rather than
+     using the ISSLASH macro, because all platforms with '\\' either
+     lack symlinks (mingw) or have working lstat (cygwin) and thus do
+     not compile this file.  0 len should have already been filtered
+     out above, with a failure return of ENOENT.  */
+  if (result == 0)
+    {
+      if (S_ISDIR (sbuf->st_mode) || file[strlen (file) - 1] != '/')
+        result = stat_time_normalize (result, sbuf);
+      else
+        {
+          /* At this point, a trailing slash is permitted only on
+             symlink-to-dir; but it should have found information on the
+             directory, not the symlink.  Call 'stat' to get info about the
+             link's referent.  Our replacement stat guarantees valid results,
+             even if the symlink is not pointing to a directory.  */
+          if (!S_ISLNK (sbuf->st_mode))
+            {
+              errno = ENOTDIR;
+              return -1;
+            }
+          result = stat (file, sbuf);
+        }
+    }
+  return result;
+}
+
+#endif /* HAVE_LSTAT */
diff --git a/src/grep/lib/malloc.c b/src/grep/lib/malloc.c
new file mode 100644
index 0000000..0d8b359
--- /dev/null
+++ b/src/grep/lib/malloc.c
@@ -0,0 +1,51 @@
+/* malloc() function that is glibc compatible.
+
+   Copyright (C) 1997-1998, 2006-2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering and Bruno Haible */
+
+#define _GL_USE_STDLIB_ALLOC 1
+#include <config.h>
+
+#include <stdlib.h>
+
+#include <errno.h>
+
+#include "xalloc-oversized.h"
+
+/* Allocate an N-byte block of memory from the heap, even if N is 0.  */
+
+void *
+rpl_malloc (size_t n)
+{
+  if (n == 0)
+    n = 1;
+
+  if (xalloc_oversized (n, 1))
+    {
+      errno = ENOMEM;
+      return NULL;
+    }
+
+  void *result = malloc (n);
+
+#if !HAVE_MALLOC_POSIX
+  if (result == NULL)
+    errno = ENOMEM;
+#endif
+
+  return result;
+}
diff --git a/src/grep/lib/malloc/dynarray-skeleton.c b/src/grep/lib/malloc/dynarray-skeleton.c
new file mode 100644
index 0000000..48210e3
--- /dev/null
+++ b/src/grep/lib/malloc/dynarray-skeleton.c
@@ -0,0 +1,528 @@
+/* Type-safe arrays which grow dynamically.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* Pre-processor macros which act as parameters:
+
+   DYNARRAY_STRUCT
+      The struct tag of dynamic array to be defined.
+   DYNARRAY_ELEMENT
+      The type name of the element type.  Elements are copied
+      as if by memcpy, and can change address as the dynamic
+      array grows.
+   DYNARRAY_PREFIX
+      The prefix of the functions which are defined.
+
+   The following parameters are optional:
+
+   DYNARRAY_ELEMENT_FREE
+      DYNARRAY_ELEMENT_FREE (E) is evaluated to deallocate the
+      contents of elements. E is of type  DYNARRAY_ELEMENT *.
+   DYNARRAY_ELEMENT_INIT
+      DYNARRAY_ELEMENT_INIT (E) is evaluated to initialize a new
+      element.  E is of type  DYNARRAY_ELEMENT *.
+      If DYNARRAY_ELEMENT_FREE but not DYNARRAY_ELEMENT_INIT is
+      defined, new elements are automatically zero-initialized.
+      Otherwise, new elements have undefined contents.
+   DYNARRAY_INITIAL_SIZE
+      The size of the statically allocated array (default:
+      at least 2, more elements if they fit into 128 bytes).
+      Must be a preprocessor constant.  If DYNARRAY_INITIAL_SIZE is 0,
+      there is no statically allocated array at, and all non-empty
+      arrays are heap-allocated.
+   DYNARRAY_FINAL_TYPE
+      The name of the type which holds the final array.  If not
+      defined, is PREFIX##finalize not provided.  DYNARRAY_FINAL_TYPE
+      must be a struct type, with members of type DYNARRAY_ELEMENT and
+      size_t at the start (in this order).
+
+   These macros are undefined after this header file has been
+   included.
+
+   The following types are provided (their members are private to the
+   dynarray implementation):
+
+     struct DYNARRAY_STRUCT
+
+   The following functions are provided:
+
+     void DYNARRAY_PREFIX##init (struct DYNARRAY_STRUCT *);
+     void DYNARRAY_PREFIX##free (struct DYNARRAY_STRUCT *);
+     bool DYNARRAY_PREFIX##has_failed (const struct DYNARRAY_STRUCT *);
+     void DYNARRAY_PREFIX##mark_failed (struct DYNARRAY_STRUCT *);
+     size_t DYNARRAY_PREFIX##size (const struct DYNARRAY_STRUCT *);
+     DYNARRAY_ELEMENT *DYNARRAY_PREFIX##begin (const struct DYNARRAY_STRUCT *);
+     DYNARRAY_ELEMENT *DYNARRAY_PREFIX##end (const struct DYNARRAY_STRUCT *);
+     DYNARRAY_ELEMENT *DYNARRAY_PREFIX##at (struct DYNARRAY_STRUCT *, size_t);
+     void DYNARRAY_PREFIX##add (struct DYNARRAY_STRUCT *, DYNARRAY_ELEMENT);
+     DYNARRAY_ELEMENT *DYNARRAY_PREFIX##emplace (struct DYNARRAY_STRUCT *);
+     bool DYNARRAY_PREFIX##resize (struct DYNARRAY_STRUCT *, size_t);
+     void DYNARRAY_PREFIX##remove_last (struct DYNARRAY_STRUCT *);
+     void DYNARRAY_PREFIX##clear (struct DYNARRAY_STRUCT *);
+
+   The following functions are provided are provided if the
+   prerequisites are met:
+
+     bool DYNARRAY_PREFIX##finalize (struct DYNARRAY_STRUCT *,
+                                     DYNARRAY_FINAL_TYPE *);
+       (if DYNARRAY_FINAL_TYPE is defined)
+     DYNARRAY_ELEMENT *DYNARRAY_PREFIX##finalize (struct DYNARRAY_STRUCT *,
+                                                  size_t *);
+       (if DYNARRAY_FINAL_TYPE is not defined)
+*/
+
+#include <malloc/dynarray.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef DYNARRAY_STRUCT
+# error "DYNARRAY_STRUCT must be defined"
+#endif
+
+#ifndef DYNARRAY_ELEMENT
+# error "DYNARRAY_ELEMENT must be defined"
+#endif
+
+#ifndef DYNARRAY_PREFIX
+# error "DYNARRAY_PREFIX must be defined"
+#endif
+
+#ifdef DYNARRAY_INITIAL_SIZE
+# if DYNARRAY_INITIAL_SIZE < 0
+#  error "DYNARRAY_INITIAL_SIZE must be non-negative"
+# endif
+# if DYNARRAY_INITIAL_SIZE > 0
+#  define DYNARRAY_HAVE_SCRATCH 1
+# else
+#  define DYNARRAY_HAVE_SCRATCH 0
+# endif
+#else
+/* Provide a reasonable default which limits the size of
+   DYNARRAY_STRUCT.  */
+# define DYNARRAY_INITIAL_SIZE \
+  (sizeof (DYNARRAY_ELEMENT) > 64 ? 2 : 128 / sizeof (DYNARRAY_ELEMENT))
+# define DYNARRAY_HAVE_SCRATCH 1
+#endif
+
+/* Public type definitions.  */
+
+/* All fields of this struct are private to the implementation.  */
+struct DYNARRAY_STRUCT
+{
+  union
+  {
+    struct dynarray_header dynarray_abstract;
+    struct
+    {
+      /* These fields must match struct dynarray_header.  */
+      size_t used;
+      size_t allocated;
+      DYNARRAY_ELEMENT *array;
+    } dynarray_header;
+  } u;
+
+#if DYNARRAY_HAVE_SCRATCH
+  /* Initial inline allocation.  */
+  DYNARRAY_ELEMENT scratch[DYNARRAY_INITIAL_SIZE];
+#endif
+};
+
+/* Internal use only: Helper macros.  */
+
+/* Ensure macro-expansion of DYNARRAY_PREFIX.  */
+#define DYNARRAY_CONCAT0(prefix, name) prefix##name
+#define DYNARRAY_CONCAT1(prefix, name) DYNARRAY_CONCAT0(prefix, name)
+#define DYNARRAY_NAME(name) DYNARRAY_CONCAT1(DYNARRAY_PREFIX, name)
+
+/* Use DYNARRAY_FREE instead of DYNARRAY_NAME (free),
+   so that Gnulib does not change 'free' to 'rpl_free'.  */
+#define DYNARRAY_FREE DYNARRAY_CONCAT1 (DYNARRAY_NAME (f), ree)
+
+/* Address of the scratch buffer if any.  */
+#if DYNARRAY_HAVE_SCRATCH
+# define DYNARRAY_SCRATCH(list) (list)->scratch
+#else
+# define DYNARRAY_SCRATCH(list) NULL
+#endif
+
+/* Internal use only: Helper functions.  */
+
+/* Internal function.  Call DYNARRAY_ELEMENT_FREE with the array
+   elements.  Name mangling needed due to the DYNARRAY_ELEMENT_FREE
+   macro expansion.  */
+static inline void
+DYNARRAY_NAME (free__elements__) (DYNARRAY_ELEMENT *__dynarray_array,
+                                  size_t __dynarray_used)
+{
+#ifdef DYNARRAY_ELEMENT_FREE
+  for (size_t __dynarray_i = 0; __dynarray_i < __dynarray_used; ++__dynarray_i)
+    DYNARRAY_ELEMENT_FREE (&__dynarray_array[__dynarray_i]);
+#endif /* DYNARRAY_ELEMENT_FREE */
+}
+
+/* Internal function.  Free the non-scratch array allocation.  */
+static inline void
+DYNARRAY_NAME (free__array__) (struct DYNARRAY_STRUCT *list)
+{
+#if DYNARRAY_HAVE_SCRATCH
+  if (list->u.dynarray_header.array != list->scratch)
+    free (list->u.dynarray_header.array);
+#else
+  free (list->u.dynarray_header.array);
+#endif
+}
+
+/* Public functions.  */
+
+/* Initialize a dynamic array object.  This must be called before any
+   use of the object.  */
+__attribute_nonnull__ ((1))
+static void
+DYNARRAY_NAME (init) (struct DYNARRAY_STRUCT *list)
+{
+  list->u.dynarray_header.used = 0;
+  list->u.dynarray_header.allocated = DYNARRAY_INITIAL_SIZE;
+  list->u.dynarray_header.array = DYNARRAY_SCRATCH (list);
+}
+
+/* Deallocate the dynamic array and its elements.  */
+__attribute_maybe_unused__ __attribute_nonnull__ ((1))
+static void
+DYNARRAY_FREE (struct DYNARRAY_STRUCT *list)
+{
+  DYNARRAY_NAME (free__elements__)
+    (list->u.dynarray_header.array, list->u.dynarray_header.used);
+  DYNARRAY_NAME (free__array__) (list);
+  DYNARRAY_NAME (init) (list);
+}
+
+/* Return true if the dynamic array is in an error state.  */
+__attribute_nonnull__ ((1))
+static inline bool
+DYNARRAY_NAME (has_failed) (const struct DYNARRAY_STRUCT *list)
+{
+  return list->u.dynarray_header.allocated == __dynarray_error_marker ();
+}
+
+/* Mark the dynamic array as failed.  All elements are deallocated as
+   a side effect.  */
+__attribute_nonnull__ ((1))
+static void
+DYNARRAY_NAME (mark_failed) (struct DYNARRAY_STRUCT *list)
+{
+  DYNARRAY_NAME (free__elements__)
+    (list->u.dynarray_header.array, list->u.dynarray_header.used);
+  DYNARRAY_NAME (free__array__) (list);
+  list->u.dynarray_header.array = DYNARRAY_SCRATCH (list);
+  list->u.dynarray_header.used = 0;
+  list->u.dynarray_header.allocated = __dynarray_error_marker ();
+}
+
+/* Return the number of elements which have been added to the dynamic
+   array.  */
+__attribute_nonnull__ ((1))
+static inline size_t
+DYNARRAY_NAME (size) (const struct DYNARRAY_STRUCT *list)
+{
+  return list->u.dynarray_header.used;
+}
+
+/* Return a pointer to the array element at INDEX.  Terminate the
+   process if INDEX is out of bounds.  */
+__attribute_nonnull__ ((1))
+static inline DYNARRAY_ELEMENT *
+DYNARRAY_NAME (at) (struct DYNARRAY_STRUCT *list, size_t index)
+{
+  if (__glibc_unlikely (index >= DYNARRAY_NAME (size) (list)))
+    __libc_dynarray_at_failure (DYNARRAY_NAME (size) (list), index);
+  return list->u.dynarray_header.array + index;
+}
+
+/* Return a pointer to the first array element, if any.  For a
+   zero-length array, the pointer can be NULL even though the dynamic
+   array has not entered the failure state.  */
+__attribute_nonnull__ ((1))
+static inline DYNARRAY_ELEMENT *
+DYNARRAY_NAME (begin) (struct DYNARRAY_STRUCT *list)
+{
+  return list->u.dynarray_header.array;
+}
+
+/* Return a pointer one element past the last array element.  For a
+   zero-length array, the pointer can be NULL even though the dynamic
+   array has not entered the failure state.  */
+__attribute_nonnull__ ((1))
+static inline DYNARRAY_ELEMENT *
+DYNARRAY_NAME (end) (struct DYNARRAY_STRUCT *list)
+{
+  return list->u.dynarray_header.array + list->u.dynarray_header.used;
+}
+
+/* Internal function.  Slow path for the add function below.  */
+static void
+DYNARRAY_NAME (add__) (struct DYNARRAY_STRUCT *list, DYNARRAY_ELEMENT item)
+{
+  if (__glibc_unlikely
+      (!__libc_dynarray_emplace_enlarge (&list->u.dynarray_abstract,
+                                         DYNARRAY_SCRATCH (list),
+                                         sizeof (DYNARRAY_ELEMENT))))
+    {
+      DYNARRAY_NAME (mark_failed) (list);
+      return;
+    }
+
+  /* Copy the new element and increase the array length.  */
+  list->u.dynarray_header.array[list->u.dynarray_header.used++] = item;
+}
+
+/* Add ITEM at the end of the array, enlarging it by one element.
+   Mark *LIST as failed if the dynamic array allocation size cannot be
+   increased.  */
+__attribute_nonnull__ ((1))
+static inline void
+DYNARRAY_NAME (add) (struct DYNARRAY_STRUCT *list, DYNARRAY_ELEMENT item)
+{
+  /* Do nothing in case of previous error.  */
+  if (DYNARRAY_NAME (has_failed) (list))
+    return;
+
+  /* Enlarge the array if necessary.  */
+  if (__glibc_unlikely (list->u.dynarray_header.used
+                        == list->u.dynarray_header.allocated))
+    {
+      DYNARRAY_NAME (add__) (list, item);
+      return;
+    }
+
+  /* Copy the new element and increase the array length.  */
+  list->u.dynarray_header.array[list->u.dynarray_header.used++] = item;
+}
+
+/* Internal function.  Building block for the emplace functions below.
+   Assumes space for one more element in *LIST.  */
+static inline DYNARRAY_ELEMENT *
+DYNARRAY_NAME (emplace__tail__) (struct DYNARRAY_STRUCT *list)
+{
+  DYNARRAY_ELEMENT *result
+    = &list->u.dynarray_header.array[list->u.dynarray_header.used];
+  ++list->u.dynarray_header.used;
+#if defined (DYNARRAY_ELEMENT_INIT)
+  DYNARRAY_ELEMENT_INIT (result);
+#elif defined (DYNARRAY_ELEMENT_FREE)
+  memset (result, 0, sizeof (*result));
+#endif
+  return result;
+}
+
+/* Internal function.  Slow path for the emplace function below.  */
+static DYNARRAY_ELEMENT *
+DYNARRAY_NAME (emplace__) (struct DYNARRAY_STRUCT *list)
+{
+  if (__glibc_unlikely
+      (!__libc_dynarray_emplace_enlarge (&list->u.dynarray_abstract,
+                                         DYNARRAY_SCRATCH (list),
+                                         sizeof (DYNARRAY_ELEMENT))))
+    {
+      DYNARRAY_NAME (mark_failed) (list);
+      return NULL;
+    }
+  return DYNARRAY_NAME (emplace__tail__) (list);
+}
+
+/* Allocate a place for a new element in *LIST and return a pointer to
+   it.  The pointer can be NULL if the dynamic array cannot be
+   enlarged due to a memory allocation failure.  */
+__attribute_maybe_unused__ __attribute_warn_unused_result__
+__attribute_nonnull__ ((1))
+static
+/* Avoid inlining with the larger initialization code.  */
+#if !(defined (DYNARRAY_ELEMENT_INIT) || defined (DYNARRAY_ELEMENT_FREE))
+inline
+#endif
+DYNARRAY_ELEMENT *
+DYNARRAY_NAME (emplace) (struct DYNARRAY_STRUCT *list)
+{
+  /* Do nothing in case of previous error.  */
+  if (DYNARRAY_NAME (has_failed) (list))
+    return NULL;
+
+  /* Enlarge the array if necessary.  */
+  if (__glibc_unlikely (list->u.dynarray_header.used
+                        == list->u.dynarray_header.allocated))
+    return (DYNARRAY_NAME (emplace__) (list));
+  return DYNARRAY_NAME (emplace__tail__) (list);
+}
+
+/* Change the size of *LIST to SIZE.  If SIZE is larger than the
+   existing size, new elements are added (which can be initialized).
+   Otherwise, the list is truncated, and elements are freed.  Return
+   false on memory allocation failure (and mark *LIST as failed).  */
+__attribute_maybe_unused__ __attribute_nonnull__ ((1))
+static bool
+DYNARRAY_NAME (resize) (struct DYNARRAY_STRUCT *list, size_t size)
+{
+  if (size > list->u.dynarray_header.used)
+    {
+      bool ok;
+#if defined (DYNARRAY_ELEMENT_INIT)
+      /* The new elements have to be initialized.  */
+      size_t old_size = list->u.dynarray_header.used;
+      ok = __libc_dynarray_resize (&list->u.dynarray_abstract,
+                                   size, DYNARRAY_SCRATCH (list),
+                                   sizeof (DYNARRAY_ELEMENT));
+      if (ok)
+        for (size_t i = old_size; i < size; ++i)
+          {
+            DYNARRAY_ELEMENT_INIT (&list->u.dynarray_header.array[i]);
+          }
+#elif defined (DYNARRAY_ELEMENT_FREE)
+      /* Zero initialization is needed so that the elements can be
+         safely freed.  */
+      ok = __libc_dynarray_resize_clear
+        (&list->u.dynarray_abstract, size,
+         DYNARRAY_SCRATCH (list), sizeof (DYNARRAY_ELEMENT));
+#else
+      ok =  __libc_dynarray_resize (&list->u.dynarray_abstract,
+                                    size, DYNARRAY_SCRATCH (list),
+                                    sizeof (DYNARRAY_ELEMENT));
+#endif
+      if (__glibc_unlikely (!ok))
+        DYNARRAY_NAME (mark_failed) (list);
+      return ok;
+    }
+  else
+    {
+      /* The list has shrunk in size.  Free the removed elements.  */
+      DYNARRAY_NAME (free__elements__)
+        (list->u.dynarray_header.array + size,
+         list->u.dynarray_header.used - size);
+      list->u.dynarray_header.used = size;
+      return true;
+    }
+}
+
+/* Remove the last element of LIST if it is present.  */
+__attribute_maybe_unused__ __attribute_nonnull__ ((1))
+static void
+DYNARRAY_NAME (remove_last) (struct DYNARRAY_STRUCT *list)
+{
+  /* used > 0 implies that the array is the non-failed state.  */
+  if (list->u.dynarray_header.used > 0)
+    {
+      size_t new_length = list->u.dynarray_header.used - 1;
+#ifdef DYNARRAY_ELEMENT_FREE
+      DYNARRAY_ELEMENT_FREE (&list->u.dynarray_header.array[new_length]);
+#endif
+      list->u.dynarray_header.used = new_length;
+    }
+}
+
+/* Remove all elements from the list.  The elements are freed, but the
+   list itself is not.  */
+__attribute_maybe_unused__ __attribute_nonnull__ ((1))
+static void
+DYNARRAY_NAME (clear) (struct DYNARRAY_STRUCT *list)
+{
+  /* free__elements__ does nothing if the list is in the failed
+     state.  */
+  DYNARRAY_NAME (free__elements__)
+    (list->u.dynarray_header.array, list->u.dynarray_header.used);
+  list->u.dynarray_header.used = 0;
+}
+
+#ifdef DYNARRAY_FINAL_TYPE
+/* Transfer the dynamic array to a permanent location at *RESULT.
+   Returns true on success on false on allocation failure.  In either
+   case, *LIST is re-initialized and can be reused.  A NULL pointer is
+   stored in *RESULT if LIST refers to an empty list.  On success, the
+   pointer in *RESULT is heap-allocated and must be deallocated using
+   free.  */
+__attribute_maybe_unused__ __attribute_warn_unused_result__
+__attribute_nonnull__ ((1, 2))
+static bool
+DYNARRAY_NAME (finalize) (struct DYNARRAY_STRUCT *list,
+                          DYNARRAY_FINAL_TYPE *result)
+{
+  struct dynarray_finalize_result res;
+  if (__libc_dynarray_finalize (&list->u.dynarray_abstract,
+                                DYNARRAY_SCRATCH (list),
+                                sizeof (DYNARRAY_ELEMENT), &res))
+    {
+      /* On success, the result owns all the data.  */
+      DYNARRAY_NAME (init) (list);
+      *result = (DYNARRAY_FINAL_TYPE) { res.array, res.length };
+      return true;
+    }
+  else
+    {
+      /* On error, we need to free all data.  */
+      DYNARRAY_FREE (list);
+      errno = ENOMEM;
+      return false;
+    }
+}
+#else /* !DYNARRAY_FINAL_TYPE */
+/* Transfer the dynamic array to a heap-allocated array and return a
+   pointer to it.  The pointer is NULL if memory allocation fails, or
+   if the array is empty, so this function should be used only for
+   arrays which are known not be empty (usually because they always
+   have a sentinel at the end).  If LENGTHP is not NULL, the array
+   length is written to *LENGTHP.  *LIST is re-initialized and can be
+   reused.  */
+__attribute_maybe_unused__ __attribute_warn_unused_result__
+__attribute_nonnull__ ((1))
+static DYNARRAY_ELEMENT *
+DYNARRAY_NAME (finalize) (struct DYNARRAY_STRUCT *list, size_t *lengthp)
+{
+  struct dynarray_finalize_result res;
+  if (__libc_dynarray_finalize (&list->u.dynarray_abstract,
+                                DYNARRAY_SCRATCH (list),
+                                sizeof (DYNARRAY_ELEMENT), &res))
+    {
+      /* On success, the result owns all the data.  */
+      DYNARRAY_NAME (init) (list);
+      if (lengthp != NULL)
+        *lengthp = res.length;
+      return res.array;
+    }
+  else
+    {
+      /* On error, we need to free all data.  */
+      DYNARRAY_FREE (list);
+      errno = ENOMEM;
+      return NULL;
+    }
+}
+#endif /* !DYNARRAY_FINAL_TYPE */
+
+/* Undo macro definitions.  */
+
+#undef DYNARRAY_CONCAT0
+#undef DYNARRAY_CONCAT1
+#undef DYNARRAY_NAME
+#undef DYNARRAY_SCRATCH
+#undef DYNARRAY_HAVE_SCRATCH
+
+#undef DYNARRAY_STRUCT
+#undef DYNARRAY_ELEMENT
+#undef DYNARRAY_PREFIX
+#undef DYNARRAY_ELEMENT_FREE
+#undef DYNARRAY_ELEMENT_INIT
+#undef DYNARRAY_INITIAL_SIZE
+#undef DYNARRAY_FINAL_TYPE
diff --git a/src/grep/lib/malloc/dynarray.h b/src/grep/lib/malloc/dynarray.h
new file mode 100644
index 0000000..638c33f
--- /dev/null
+++ b/src/grep/lib/malloc/dynarray.h
@@ -0,0 +1,178 @@
+/* Type-safe arrays which grow dynamically.  Shared definitions.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* To use the dynarray facility, you need to include
+   <malloc/dynarray-skeleton.c> and define the parameter macros
+   documented in that file.
+
+   A minimal example which provides a growing list of integers can be
+   defined like this:
+
+     struct int_array
+     {
+       // Pointer to result array followed by its length,
+       // as required by DYNARRAY_FINAL_TYPE.
+       int *array;
+       size_t length;
+     };
+
+     #define DYNARRAY_STRUCT dynarray_int
+     #define DYNARRAY_ELEMENT int
+     #define DYNARRAY_PREFIX dynarray_int_
+     #define DYNARRAY_FINAL_TYPE struct int_array
+     #include <malloc/dynarray-skeleton.c>
+
+   To create a three-element array with elements 1, 2, 3, use this
+   code:
+
+     struct dynarray_int dyn;
+     dynarray_int_init (&dyn);
+     for (int i = 1; i <= 3; ++i)
+       {
+         int *place = dynarray_int_emplace (&dyn);
+         assert (place != NULL);
+         *place = i;
+       }
+     struct int_array result;
+     bool ok = dynarray_int_finalize (&dyn, &result);
+     assert (ok);
+     assert (result.length == 3);
+     assert (result.array[0] == 1);
+     assert (result.array[1] == 2);
+     assert (result.array[2] == 3);
+     free (result.array);
+
+   If the elements contain resources which must be freed, define
+   DYNARRAY_ELEMENT_FREE appropriately, like this:
+
+     struct str_array
+     {
+       char **array;
+       size_t length;
+     };
+
+     #define DYNARRAY_STRUCT dynarray_str
+     #define DYNARRAY_ELEMENT char *
+     #define DYNARRAY_ELEMENT_FREE(ptr) free (*ptr)
+     #define DYNARRAY_PREFIX dynarray_str_
+     #define DYNARRAY_FINAL_TYPE struct str_array
+     #include <malloc/dynarray-skeleton.c>
+
+   Compared to scratch buffers, dynamic arrays have the following
+   features:
+
+   - They have an element type, and are not just an untyped buffer of
+     bytes.
+
+   - When growing, previously stored elements are preserved.  (It is
+     expected that scratch_buffer_grow_preserve and
+     scratch_buffer_set_array_size eventually go away because all
+     current users are moved to dynamic arrays.)
+
+   - Scratch buffers have a more aggressive growth policy because
+     growing them typically means a retry of an operation (across an
+     NSS service module boundary), which is expensive.
+
+   - For the same reason, scratch buffers have a much larger initial
+     stack allocation.  */
+
+#ifndef _DYNARRAY_H
+#define _DYNARRAY_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+
+struct dynarray_header
+{
+  size_t used;
+  size_t allocated;
+  void *array;
+};
+
+/* Marker used in the allocated member to indicate that an error was
+   encountered.  */
+static inline size_t
+__dynarray_error_marker (void)
+{
+  return -1;
+}
+
+/* Internal function.  See the has_failed function in
+   dynarray-skeleton.c.  */
+static inline bool
+__dynarray_error (struct dynarray_header *list)
+{
+  return list->allocated == __dynarray_error_marker ();
+}
+
+/* Internal function.  Enlarge the dynamically allocated area of the
+   array to make room for one more element.  SCRATCH is a pointer to
+   the scratch area (which is not heap-allocated and must not be
+   freed).  ELEMENT_SIZE is the size, in bytes, of one element.
+   Return false on failure, true on success.  */
+bool __libc_dynarray_emplace_enlarge (struct dynarray_header *,
+                                      void *scratch, size_t element_size);
+
+/* Internal function.  Enlarge the dynamically allocated area of the
+   array to make room for at least SIZE elements (which must be larger
+   than the existing used part of the dynamic array).  SCRATCH is a
+   pointer to the scratch area (which is not heap-allocated and must
+   not be freed).  ELEMENT_SIZE is the size, in bytes, of one element.
+   Return false on failure, true on success.  */
+bool __libc_dynarray_resize (struct dynarray_header *, size_t size,
+                             void *scratch, size_t element_size);
+
+/* Internal function.  Like __libc_dynarray_resize, but clear the new
+   part of the dynamic array.  */
+bool __libc_dynarray_resize_clear (struct dynarray_header *, size_t size,
+                                   void *scratch, size_t element_size);
+
+/* Internal type.  */
+struct dynarray_finalize_result
+{
+  void *array;
+  size_t length;
+};
+
+/* Internal function.  Copy the dynamically-allocated area to an
+   explicitly-sized heap allocation.  SCRATCH is a pointer to the
+   embedded scratch space.  ELEMENT_SIZE is the size, in bytes, of the
+   element type.  On success, true is returned, and pointer and length
+   are written to *RESULT.  On failure, false is returned.  The caller
+   has to take care of some of the memory management; this function is
+   expected to be called from dynarray-skeleton.c.  */
+bool __libc_dynarray_finalize (struct dynarray_header *list, void *scratch,
+                               size_t element_size,
+                               struct dynarray_finalize_result *result);
+
+
+/* Internal function.  Terminate the process after an index error.
+   SIZE is the number of elements of the dynamic array.  INDEX is the
+   lookup index which triggered the failure.  */
+_Noreturn void __libc_dynarray_at_failure (size_t size, size_t index);
+
+#ifndef _ISOMAC
+libc_hidden_proto (__libc_dynarray_emplace_enlarge)
+libc_hidden_proto (__libc_dynarray_resize)
+libc_hidden_proto (__libc_dynarray_resize_clear)
+libc_hidden_proto (__libc_dynarray_finalize)
+libc_hidden_proto (__libc_dynarray_at_failure)
+#endif
+
+#endif /* _DYNARRAY_H */
diff --git a/src/grep/lib/malloc/dynarray_at_failure.c b/src/grep/lib/malloc/dynarray_at_failure.c
new file mode 100644
index 0000000..4f840db
--- /dev/null
+++ b/src/grep/lib/malloc/dynarray_at_failure.c
@@ -0,0 +1,39 @@
+/* Report an dynamic array index out of bounds condition.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <libc-config.h>
+#endif
+
+#include <dynarray.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+void
+__libc_dynarray_at_failure (size_t size, size_t index)
+{
+#ifdef _LIBC
+  char buf[200];
+  __snprintf (buf, sizeof (buf), "Fatal glibc error: "
+              "array index %zu not less than array length %zu\n",
+              index, size);
+#else
+ abort ();
+#endif
+}
+libc_hidden_def (__libc_dynarray_at_failure)
diff --git a/src/grep/lib/malloc/dynarray_emplace_enlarge.c b/src/grep/lib/malloc/dynarray_emplace_enlarge.c
new file mode 100644
index 0000000..0f8baf9
--- /dev/null
+++ b/src/grep/lib/malloc/dynarray_emplace_enlarge.c
@@ -0,0 +1,77 @@
+/* Increase the size of a dynamic array in preparation of an emplace operation.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <libc-config.h>
+#endif
+
+#include <dynarray.h>
+#include <errno.h>
+#include <intprops.h>
+#include <stdlib.h>
+#include <string.h>
+
+bool
+__libc_dynarray_emplace_enlarge (struct dynarray_header *list,
+                                 void *scratch, size_t element_size)
+{
+  size_t new_allocated;
+  if (list->allocated == 0)
+    {
+      /* No scratch buffer provided.  Choose a reasonable default
+         size.  */
+      if (element_size < 4)
+        new_allocated = 16;
+      else if (element_size < 8)
+        new_allocated = 8;
+      else
+        new_allocated = 4;
+    }
+  else
+    /* Increase the allocated size, using an exponential growth
+       policy.  */
+    {
+      new_allocated = list->allocated + list->allocated / 2 + 1;
+      if (new_allocated <= list->allocated)
+        {
+          /* Overflow.  */
+          __set_errno (ENOMEM);
+          return false;
+        }
+    }
+
+  size_t new_size;
+  if (INT_MULTIPLY_WRAPV (new_allocated, element_size, &new_size))
+    return false;
+  void *new_array;
+  if (list->array == scratch)
+    {
+      /* The previous array was not heap-allocated.  */
+      new_array = malloc (new_size);
+      if (new_array != NULL && list->array != NULL)
+        memcpy (new_array, list->array, list->used * element_size);
+    }
+  else
+    new_array = realloc (list->array, new_size);
+  if (new_array == NULL)
+    return false;
+  list->array = new_array;
+  list->allocated = new_allocated;
+  return true;
+}
+libc_hidden_def (__libc_dynarray_emplace_enlarge)
diff --git a/src/grep/lib/malloc/dynarray_finalize.c b/src/grep/lib/malloc/dynarray_finalize.c
new file mode 100644
index 0000000..c33da41
--- /dev/null
+++ b/src/grep/lib/malloc/dynarray_finalize.c
@@ -0,0 +1,66 @@
+/* Copy the dynamically-allocated area to an explicitly-sized heap allocation.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <libc-config.h>
+#endif
+
+#include <dynarray.h>
+#include <stdlib.h>
+#include <string.h>
+
+bool
+__libc_dynarray_finalize (struct dynarray_header *list,
+                          void *scratch, size_t element_size,
+                          struct dynarray_finalize_result *result)
+{
+  if (__dynarray_error (list))
+    /* The caller will reported the deferred error.  */
+    return false;
+
+  size_t used = list->used;
+
+  /* Empty list.  */
+  if (used == 0)
+    {
+      /* An empty list could still be backed by a heap-allocated
+         array.  Free it if necessary.  */
+      if (list->array != scratch)
+        free (list->array);
+      *result = (struct dynarray_finalize_result) { NULL, 0 };
+      return true;
+    }
+
+  size_t allocation_size = used * element_size;
+  void *heap_array = malloc (allocation_size);
+  if (heap_array != NULL)
+    {
+      /* The new array takes ownership of the strings.  */
+      if (list->array != NULL)
+        memcpy (heap_array, list->array, allocation_size);
+      if (list->array != scratch)
+        free (list->array);
+      *result = (struct dynarray_finalize_result)
+        { .array = heap_array, .length = used };
+      return true;
+    }
+  else
+    /* The caller will perform the freeing operation.  */
+    return false;
+}
+libc_hidden_def (__libc_dynarray_finalize)
diff --git a/src/grep/lib/malloc/dynarray_resize.c b/src/grep/lib/malloc/dynarray_resize.c
new file mode 100644
index 0000000..5a57166
--- /dev/null
+++ b/src/grep/lib/malloc/dynarray_resize.c
@@ -0,0 +1,68 @@
+/* Increase the size of a dynamic array.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <libc-config.h>
+#endif
+
+#include <dynarray.h>
+#include <errno.h>
+#include <intprops.h>
+#include <stdlib.h>
+#include <string.h>
+
+bool
+__libc_dynarray_resize (struct dynarray_header *list, size_t size,
+                        void *scratch, size_t element_size)
+{
+  /* The existing allocation provides sufficient room.  */
+  if (size <= list->allocated)
+    {
+      list->used = size;
+      return true;
+    }
+
+  /* Otherwise, use size as the new allocation size.  The caller is
+     expected to provide the final size of the array, so there is no
+     over-allocation here.  */
+
+  size_t new_size_bytes;
+  if (INT_MULTIPLY_WRAPV (size, element_size, &new_size_bytes))
+    {
+      /* Overflow.  */
+      __set_errno (ENOMEM);
+      return false;
+    }
+  void *new_array;
+  if (list->array == scratch)
+    {
+      /* The previous array was not heap-allocated.  */
+      new_array = malloc (new_size_bytes);
+      if (new_array != NULL && list->array != NULL)
+        memcpy (new_array, list->array, list->used * element_size);
+    }
+  else
+    new_array = realloc (list->array, new_size_bytes);
+  if (new_array == NULL)
+    return false;
+  list->array = new_array;
+  list->allocated = size;
+  list->used = size;
+  return true;
+}
+libc_hidden_def (__libc_dynarray_resize)
diff --git a/src/grep/lib/malloc/dynarray_resize_clear.c b/src/grep/lib/malloc/dynarray_resize_clear.c
new file mode 100644
index 0000000..9c43b00
--- /dev/null
+++ b/src/grep/lib/malloc/dynarray_resize_clear.c
@@ -0,0 +1,39 @@
+/* Increase the size of a dynamic array and clear the new part.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <libc-config.h>
+#endif
+
+#include <dynarray.h>
+#include <string.h>
+
+bool
+__libc_dynarray_resize_clear (struct dynarray_header *list, size_t size,
+                              void *scratch, size_t element_size)
+{
+  size_t old_size = list->used;
+  if (!__libc_dynarray_resize (list, size, scratch, element_size))
+    return false;
+  /* __libc_dynarray_resize already checked for overflow.  */
+  char *array = list->array;
+  memset (array + (old_size * element_size), 0,
+          (size - old_size) * element_size);
+  return true;
+}
+libc_hidden_def (__libc_dynarray_resize_clear)
diff --git a/src/grep/lib/malloca.c b/src/grep/lib/malloca.c
new file mode 100644
index 0000000..b488423
--- /dev/null
+++ b/src/grep/lib/malloca.c
@@ -0,0 +1,113 @@
+/* Safe automatic memory allocation.
+   Copyright (C) 2003, 2006-2007, 2009-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2003, 2018.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define _GL_USE_STDLIB_ALLOC 1
+#include <config.h>
+
+/* Specification.  */
+#include "malloca.h"
+
+#include "idx.h"
+#include "intprops.h"
+#include "verify.h"
+
+/* The speed critical point in this file is freea() applied to an alloca()
+   result: it must be fast, to match the speed of alloca().  The speed of
+   mmalloca() and freea() in the other case are not critical, because they
+   are only invoked for big memory sizes.
+   Here we use a bit in the address as an indicator, an idea by Ondřej Bílka.
+   malloca() can return three types of pointers:
+     - Pointers ≡ 0 mod 2*sa_alignment_max come from stack allocation.
+     - Pointers ≡ sa_alignment_max mod 2*sa_alignment_max come from heap
+       allocation.
+     - NULL comes from a failed heap allocation.  */
+
+/* Type for holding very small pointer differences.  */
+typedef unsigned char small_t;
+/* Verify that it is wide enough.  */
+verify (2 * sa_alignment_max - 1 <= (small_t) -1);
+
+void *
+mmalloca (size_t n)
+{
+#if HAVE_ALLOCA
+  /* Allocate one more word, used to determine the address to pass to freea(),
+     and room for the alignment ≡ sa_alignment_max mod 2*sa_alignment_max.  */
+  uintptr_t alignment2_mask = 2 * sa_alignment_max - 1;
+  int plus = sizeof (small_t) + alignment2_mask;
+  idx_t nplus;
+  if (!INT_ADD_WRAPV (n, plus, &nplus) && !xalloc_oversized (nplus, 1))
+    {
+      char *mem = (char *) malloc (nplus);
+
+      if (mem != NULL)
+        {
+          uintptr_t umem = (uintptr_t)mem, umemplus;
+          /* The INT_ADD_WRAPV avoids signed integer overflow on
+             theoretical platforms where UINTPTR_MAX <= INT_MAX.  */
+          INT_ADD_WRAPV (umem, sizeof (small_t) + sa_alignment_max - 1,
+                         &umemplus);
+          idx_t offset = ((umemplus & ~alignment2_mask)
+                          + sa_alignment_max - umem);
+          void *vp = mem + offset;
+          small_t *p = vp;
+          /* Here p >= mem + sizeof (small_t),
+             and p <= mem + sizeof (small_t) + 2 * sa_alignment_max - 1
+             hence p + n <= mem + nplus.
+             So, the memory range [p, p+n) lies in the allocated memory range
+             [mem, mem + nplus).  */
+          p[-1] = offset;
+          /* p ≡ sa_alignment_max mod 2*sa_alignment_max.  */
+          return p;
+        }
+    }
+  /* Out of memory.  */
+  return NULL;
+#else
+# if !MALLOC_0_IS_NONNULL
+  if (n == 0)
+    n = 1;
+# endif
+  return malloc (n);
+#endif
+}
+
+#if HAVE_ALLOCA
+void
+freea (void *p)
+{
+  /* Check argument.  */
+  if ((uintptr_t) p & (sa_alignment_max - 1))
+    {
+      /* p was not the result of a malloca() call.  Invalid argument.  */
+      abort ();
+    }
+  /* Determine whether p was a non-NULL pointer returned by mmalloca().  */
+  if ((uintptr_t) p & sa_alignment_max)
+    {
+      void *mem = (char *) p - ((small_t *) p)[-1];
+      free (mem);
+    }
+}
+#endif
+
+/*
+ * Hey Emacs!
+ * Local Variables:
+ * coding: utf-8
+ * End:
+ */
diff --git a/src/grep/lib/malloca.h b/src/grep/lib/malloca.h
new file mode 100644
index 0000000..7eb63d2
--- /dev/null
+++ b/src/grep/lib/malloca.h
@@ -0,0 +1,126 @@
+/* Safe automatic memory allocation.
+   Copyright (C) 2003-2007, 2009-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2003.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _MALLOCA_H
+#define _MALLOCA_H
+
+#include <alloca.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include "xalloc-oversized.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* safe_alloca(N) is equivalent to alloca(N) when it is safe to call
+   alloca(N); otherwise it returns NULL.  It either returns N bytes of
+   memory allocated on the stack, that lasts until the function returns,
+   or NULL.
+   Use of safe_alloca should be avoided:
+     - inside arguments of function calls - undefined behaviour,
+     - in inline functions - the allocation may actually last until the
+       calling function returns.
+*/
+#if HAVE_ALLOCA
+/* The OS usually guarantees only one guard page at the bottom of the stack,
+   and a page size can be as small as 4096 bytes.  So we cannot safely
+   allocate anything larger than 4096 bytes.  Also care for the possibility
+   of a few compiler-allocated temporary stack slots.
+   This must be a macro, not a function.  */
+# define safe_alloca(N) ((N) < 4032 ? alloca (N) : NULL)
+#else
+# define safe_alloca(N) ((void) (N), NULL)
+#endif
+
+/* Free a block of memory allocated through malloca().  */
+#if HAVE_ALLOCA
+extern void freea (void *p);
+#else
+# define freea free
+#endif
+
+/* malloca(N) is a safe variant of alloca(N).  It allocates N bytes of
+   memory allocated on the stack, that must be freed using freea() before
+   the function returns.  Upon failure, it returns NULL.  */
+#if HAVE_ALLOCA
+# define malloca(N) \
+  ((N) < 4032 - (2 * sa_alignment_max - 1)                                   \
+   ? (void *) (((uintptr_t) (char *) alloca ((N) + 2 * sa_alignment_max - 1) \
+                + (2 * sa_alignment_max - 1))                                \
+               & ~(uintptr_t)(2 * sa_alignment_max - 1))                     \
+   : mmalloca (N))
+#else
+# define malloca(N) \
+  mmalloca (N)
+#endif
+extern void *mmalloca (size_t n)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (freea, 1)
+  _GL_ATTRIBUTE_ALLOC_SIZE ((1));
+
+/* nmalloca(N,S) is an overflow-safe variant of malloca (N * S).
+   It allocates an array of N objects, each with S bytes of memory,
+   on the stack.  N and S should be nonnegative and free of side effects.
+   The array must be freed using freea() before the function returns.  */
+#define nmalloca(n, s) \
+  (xalloc_oversized (n, s) ? NULL : malloca ((n) * (size_t) (s)))
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+/* ------------------- Auxiliary, non-public definitions ------------------- */
+
+/* Determine the alignment of a type at compile time.  */
+#if defined __GNUC__ || defined __clang__ || defined __IBM__ALIGNOF__
+# define sa_alignof __alignof__
+#elif defined __cplusplus
+  template <class type> struct sa_alignof_helper { char __slot1; type __slot2; };
+# define sa_alignof(type) offsetof (sa_alignof_helper<type>, __slot2)
+#elif defined __hpux
+  /* Work around a HP-UX 10.20 cc bug with enums constants defined as offsetof
+     values.  */
+# define sa_alignof(type) (sizeof (type) <= 4 ? 4 : 8)
+#elif defined _AIX
+  /* Work around an AIX 3.2.5 xlc bug with enums constants defined as offsetof
+     values.  */
+# define sa_alignof(type) (sizeof (type) <= 4 ? 4 : 8)
+#else
+# define sa_alignof(type) offsetof (struct { char __slot1; type __slot2; }, __slot2)
+#endif
+
+enum
+{
+/* The desired alignment of memory allocations is the maximum alignment
+   among all elementary types.  */
+  sa_alignment_long = sa_alignof (long),
+  sa_alignment_double = sa_alignof (double),
+  sa_alignment_longlong = sa_alignof (long long),
+  sa_alignment_longdouble = sa_alignof (long double),
+  sa_alignment_max = ((sa_alignment_long - 1) | (sa_alignment_double - 1)
+                      | (sa_alignment_longlong - 1)
+                      | (sa_alignment_longdouble - 1)
+                     ) + 1
+};
+
+#endif /* _MALLOCA_H */
diff --git a/src/grep/lib/mbchar.c b/src/grep/lib/mbchar.c
new file mode 100644
index 0000000..a466257
--- /dev/null
+++ b/src/grep/lib/mbchar.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+
+#include <config.h>
+
+#define MBCHAR_INLINE _GL_EXTERN_INLINE
+
+#include <limits.h>
+
+#include "mbchar.h"
+
+#if IS_BASIC_ASCII
+
+/* Bit table of characters in the ISO C "basic character set".  */
+const unsigned int is_basic_table [UCHAR_MAX / 32 + 1] =
+{
+  0x00001a00,           /* '\t' '\v' '\f' */
+  0xffffffef,           /* ' '...'#' '%'...'?' */
+  0xfffffffe,           /* 'A'...'Z' '[' '\\' ']' '^' '_' */
+  0x7ffffffe            /* 'a'...'z' '{' '|' '}' '~' */
+  /* The remaining bits are 0.  */
+};
+
+#endif /* IS_BASIC_ASCII */
diff --git a/src/grep/lib/mbchar.h b/src/grep/lib/mbchar.h
new file mode 100644
index 0000000..704814a
--- /dev/null
+++ b/src/grep/lib/mbchar.h
@@ -0,0 +1,353 @@
+/* Multibyte character data type.
+   Copyright (C) 2001, 2005-2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>.  */
+
+/* A multibyte character is a short subsequence of a char* string,
+   representing a single wide character.
+
+   We use multibyte characters instead of wide characters because of
+   the following goals:
+   1) correct multibyte handling, i.e. operate according to the LC_CTYPE
+      locale,
+   2) ease of maintenance, i.e. the maintainer needs not know all details
+      of the ISO C 99 standard,
+   3) don't fail grossly if the input is not in the encoding set by the
+      locale, because often different encodings are in use in the same
+      countries (ISO-8859-1/UTF-8, EUC-JP/Shift_JIS, ...),
+   4) fast in the case of ASCII characters,
+   5) portability, i.e. don't make unportable assumptions about wchar_t.
+
+   Multibyte characters are only accessed through the mb* macros.
+
+   mb_ptr (mbc)
+     return a pointer to the beginning of the multibyte sequence.
+
+   mb_len (mbc)
+     returns the number of bytes occupied by the multibyte sequence.
+     Always > 0.
+
+   mb_iseq (mbc, sc)
+     returns true if mbc is the standard ASCII character sc.
+
+   mb_isnul (mbc)
+     returns true if mbc is the nul character.
+
+   mb_cmp (mbc1, mbc2)
+     returns a positive, zero, or negative value depending on whether mbc1
+     sorts after, same or before mbc2.
+
+   mb_casecmp (mbc1, mbc2)
+     returns a positive, zero, or negative value depending on whether mbc1
+     sorts after, same or before mbc2, modulo upper/lowercase conversion.
+
+   mb_equal (mbc1, mbc2)
+     returns true if mbc1 and mbc2 are equal.
+
+   mb_caseequal (mbc1, mbc2)
+     returns true if mbc1 and mbc2 are equal modulo upper/lowercase conversion.
+
+   mb_isalnum (mbc)
+     returns true if mbc is alphanumeric.
+
+   mb_isalpha (mbc)
+     returns true if mbc is alphabetic.
+
+   mb_isascii(mbc)
+     returns true if mbc is plain ASCII.
+
+   mb_isblank (mbc)
+     returns true if mbc is a blank.
+
+   mb_iscntrl (mbc)
+     returns true if mbc is a control character.
+
+   mb_isdigit (mbc)
+     returns true if mbc is a decimal digit.
+
+   mb_isgraph (mbc)
+     returns true if mbc is a graphic character.
+
+   mb_islower (mbc)
+     returns true if mbc is lowercase.
+
+   mb_isprint (mbc)
+     returns true if mbc is a printable character.
+
+   mb_ispunct (mbc)
+     returns true if mbc is a punctuation character.
+
+   mb_isspace (mbc)
+     returns true if mbc is a space character.
+
+   mb_isupper (mbc)
+     returns true if mbc is uppercase.
+
+   mb_isxdigit (mbc)
+     returns true if mbc is a hexadecimal digit.
+
+   mb_width (mbc)
+     returns the number of columns on the output device occupied by mbc.
+     Always >= 0.
+
+   mb_putc (mbc, stream)
+     outputs mbc on stream, a byte oriented FILE stream opened for output.
+
+   mb_setascii (&mbc, sc)
+     assigns the standard ASCII character sc to mbc.
+
+   mb_copy (&destmbc, &srcmbc)
+     copies srcmbc to destmbc.
+
+   Here are the function prototypes of the macros.
+
+   extern const char *  mb_ptr (const mbchar_t mbc);
+   extern size_t        mb_len (const mbchar_t mbc);
+   extern bool          mb_iseq (const mbchar_t mbc, char sc);
+   extern bool          mb_isnul (const mbchar_t mbc);
+   extern int           mb_cmp (const mbchar_t mbc1, const mbchar_t mbc2);
+   extern int           mb_casecmp (const mbchar_t mbc1, const mbchar_t mbc2);
+   extern bool          mb_equal (const mbchar_t mbc1, const mbchar_t mbc2);
+   extern bool          mb_caseequal (const mbchar_t mbc1, const mbchar_t mbc2);
+   extern bool          mb_isalnum (const mbchar_t mbc);
+   extern bool          mb_isalpha (const mbchar_t mbc);
+   extern bool          mb_isascii (const mbchar_t mbc);
+   extern bool          mb_isblank (const mbchar_t mbc);
+   extern bool          mb_iscntrl (const mbchar_t mbc);
+   extern bool          mb_isdigit (const mbchar_t mbc);
+   extern bool          mb_isgraph (const mbchar_t mbc);
+   extern bool          mb_islower (const mbchar_t mbc);
+   extern bool          mb_isprint (const mbchar_t mbc);
+   extern bool          mb_ispunct (const mbchar_t mbc);
+   extern bool          mb_isspace (const mbchar_t mbc);
+   extern bool          mb_isupper (const mbchar_t mbc);
+   extern bool          mb_isxdigit (const mbchar_t mbc);
+   extern int           mb_width (const mbchar_t mbc);
+   extern void          mb_putc (const mbchar_t mbc, FILE *stream);
+   extern void          mb_setascii (mbchar_t *new, char sc);
+   extern void          mb_copy (mbchar_t *new, const mbchar_t *old);
+ */
+
+#ifndef _MBCHAR_H
+#define _MBCHAR_H 1
+
+#include <stdbool.h>
+#include <string.h>
+#include <wchar.h>
+#include <wctype.h>
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef MBCHAR_INLINE
+# define MBCHAR_INLINE _GL_INLINE
+#endif
+
+#define MBCHAR_BUF_SIZE 24
+
+struct mbchar
+{
+  const char *ptr;      /* pointer to current character */
+  size_t bytes;         /* number of bytes of current character, > 0 */
+  bool wc_valid;        /* true if wc is a valid wide character */
+  wchar_t wc;           /* if wc_valid: the current character */
+  char buf[MBCHAR_BUF_SIZE]; /* room for the bytes, used for file input only */
+};
+
+/* EOF (not a real character) is represented with bytes = 0 and
+   wc_valid = false.  */
+
+typedef struct mbchar mbchar_t;
+
+/* Access the current character.  */
+#define mb_ptr(mbc) ((mbc).ptr)
+#define mb_len(mbc) ((mbc).bytes)
+
+/* Comparison of characters.  */
+#define mb_iseq(mbc, sc) ((mbc).wc_valid && (mbc).wc == (sc))
+#define mb_isnul(mbc) ((mbc).wc_valid && (mbc).wc == 0)
+#define mb_cmp(mbc1, mbc2) \
+  ((mbc1).wc_valid                                                      \
+   ? ((mbc2).wc_valid                                                   \
+      ? (int) (mbc1).wc - (int) (mbc2).wc                               \
+      : -1)                                                             \
+   : ((mbc2).wc_valid                                                   \
+      ? 1                                                               \
+      : (mbc1).bytes == (mbc2).bytes                                    \
+        ? memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes)                 \
+        : (mbc1).bytes < (mbc2).bytes                                   \
+          ? (memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) > 0 ? 1 : -1) \
+          : (memcmp ((mbc1).ptr, (mbc2).ptr, (mbc2).bytes) >= 0 ? 1 : -1)))
+#define mb_casecmp(mbc1, mbc2) \
+  ((mbc1).wc_valid                                                      \
+   ? ((mbc2).wc_valid                                                   \
+      ? (int) towlower ((mbc1).wc) - (int) towlower ((mbc2).wc)         \
+      : -1)                                                             \
+   : ((mbc2).wc_valid                                                   \
+      ? 1                                                               \
+      : (mbc1).bytes == (mbc2).bytes                                    \
+        ? memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes)                 \
+        : (mbc1).bytes < (mbc2).bytes                                   \
+          ? (memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) > 0 ? 1 : -1) \
+          : (memcmp ((mbc1).ptr, (mbc2).ptr, (mbc2).bytes) >= 0 ? 1 : -1)))
+#define mb_equal(mbc1, mbc2) \
+  ((mbc1).wc_valid && (mbc2).wc_valid                                   \
+   ? (mbc1).wc == (mbc2).wc                                             \
+   : (mbc1).bytes == (mbc2).bytes                                       \
+     && memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) == 0)
+#define mb_caseequal(mbc1, mbc2) \
+  ((mbc1).wc_valid && (mbc2).wc_valid                                   \
+   ? towlower ((mbc1).wc) == towlower ((mbc2).wc)                       \
+   : (mbc1).bytes == (mbc2).bytes                                       \
+     && memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) == 0)
+
+/* <ctype.h>, <wctype.h> classification.  */
+#define mb_isascii(mbc) \
+  ((mbc).wc_valid && (mbc).wc >= 0 && (mbc).wc <= 127)
+#define mb_isalnum(mbc) ((mbc).wc_valid && iswalnum ((mbc).wc))
+#define mb_isalpha(mbc) ((mbc).wc_valid && iswalpha ((mbc).wc))
+#define mb_isblank(mbc) ((mbc).wc_valid && iswblank ((mbc).wc))
+#define mb_iscntrl(mbc) ((mbc).wc_valid && iswcntrl ((mbc).wc))
+#define mb_isdigit(mbc) ((mbc).wc_valid && iswdigit ((mbc).wc))
+#define mb_isgraph(mbc) ((mbc).wc_valid && iswgraph ((mbc).wc))
+#define mb_islower(mbc) ((mbc).wc_valid && iswlower ((mbc).wc))
+#define mb_isprint(mbc) ((mbc).wc_valid && iswprint ((mbc).wc))
+#define mb_ispunct(mbc) ((mbc).wc_valid && iswpunct ((mbc).wc))
+#define mb_isspace(mbc) ((mbc).wc_valid && iswspace ((mbc).wc))
+#define mb_isupper(mbc) ((mbc).wc_valid && iswupper ((mbc).wc))
+#define mb_isxdigit(mbc) ((mbc).wc_valid && iswxdigit ((mbc).wc))
+
+/* Extra <wchar.h> function.  */
+
+/* Unprintable characters appear as a small box of width 1.  */
+#define MB_UNPRINTABLE_WIDTH 1
+
+MBCHAR_INLINE int
+mb_width_aux (wint_t wc)
+{
+  int w = wcwidth (wc);
+  /* For unprintable characters, arbitrarily return 0 for control characters
+     and MB_UNPRINTABLE_WIDTH otherwise.  */
+  return (w >= 0 ? w : iswcntrl (wc) ? 0 : MB_UNPRINTABLE_WIDTH);
+}
+
+#define mb_width(mbc) \
+  ((mbc).wc_valid ? mb_width_aux ((mbc).wc) : MB_UNPRINTABLE_WIDTH)
+
+/* Output.  */
+#define mb_putc(mbc, stream)  fwrite ((mbc).ptr, 1, (mbc).bytes, (stream))
+
+/* Assignment.  */
+#define mb_setascii(mbc, sc) \
+  ((mbc)->ptr = (mbc)->buf, (mbc)->bytes = 1, (mbc)->wc_valid = 1, \
+   (mbc)->wc = (mbc)->buf[0] = (sc))
+
+/* Copying a character.  */
+MBCHAR_INLINE void
+mb_copy (mbchar_t *new_mbc, const mbchar_t *old_mbc)
+{
+  if (old_mbc->ptr == &old_mbc->buf[0])
+    {
+      memcpy (&new_mbc->buf[0], &old_mbc->buf[0], old_mbc->bytes);
+      new_mbc->ptr = &new_mbc->buf[0];
+    }
+  else
+    new_mbc->ptr = old_mbc->ptr;
+  new_mbc->bytes = old_mbc->bytes;
+  if ((new_mbc->wc_valid = old_mbc->wc_valid))
+    new_mbc->wc = old_mbc->wc;
+}
+
+
+/* is_basic(c) tests whether the single-byte character c is in the
+   ISO C "basic character set".
+   This is a convenience function, and is in this file only to share code
+   between mbiter_multi.h and mbfile_multi.h.  */
+#if (' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
+    && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
+    && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
+    && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
+    && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
+    && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
+    && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
+    && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
+    && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
+    && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
+    && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
+    && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
+    && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
+    && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
+    && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
+    && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
+    && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
+    && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
+    && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
+    && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
+    && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
+    && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
+    && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126)
+/* The character set is ISO-646, not EBCDIC. */
+# define IS_BASIC_ASCII 1
+
+extern const unsigned int is_basic_table[];
+
+MBCHAR_INLINE bool
+is_basic (char c)
+{
+  return (is_basic_table [(unsigned char) c >> 5] >> ((unsigned char) c & 31))
+         & 1;
+}
+
+#else
+
+MBCHAR_INLINE bool
+is_basic (char c)
+{
+  switch (c)
+    {
+    case '\t': case '\v': case '\f':
+    case ' ': case '!': case '"': case '#': case '%':
+    case '&': case '\'': case '(': case ')': case '*':
+    case '+': case ',': case '-': case '.': case '/':
+    case '0': case '1': case '2': case '3': case '4':
+    case '5': case '6': case '7': case '8': case '9':
+    case ':': case ';': case '<': case '=': case '>':
+    case '?':
+    case 'A': case 'B': case 'C': case 'D': case 'E':
+    case 'F': case 'G': case 'H': case 'I': case 'J':
+    case 'K': case 'L': case 'M': case 'N': case 'O':
+    case 'P': case 'Q': case 'R': case 'S': case 'T':
+    case 'U': case 'V': case 'W': case 'X': case 'Y':
+    case 'Z':
+    case '[': case '\\': case ']': case '^': case '_':
+    case 'a': case 'b': case 'c': case 'd': case 'e':
+    case 'f': case 'g': case 'h': case 'i': case 'j':
+    case 'k': case 'l': case 'm': case 'n': case 'o':
+    case 'p': case 'q': case 'r': case 's': case 't':
+    case 'u': case 'v': case 'w': case 'x': case 'y':
+    case 'z': case '{': case '|': case '}': case '~':
+      return 1;
+    default:
+      return 0;
+    }
+}
+
+#endif
+
+_GL_INLINE_HEADER_END
+
+#endif /* _MBCHAR_H */
diff --git a/src/grep/lib/mbiter.c b/src/grep/lib/mbiter.c
new file mode 100644
index 0000000..8c49fd7
--- /dev/null
+++ b/src/grep/lib/mbiter.c
@@ -0,0 +1,21 @@
+/* Iterating through multibyte strings: macros for multi-byte encodings.
+
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define MBITER_INLINE _GL_EXTERN_INLINE
+#include "mbiter.h"
diff --git a/src/grep/lib/mbiter.h b/src/grep/lib/mbiter.h
new file mode 100644
index 0000000..8337b33
--- /dev/null
+++ b/src/grep/lib/mbiter.h
@@ -0,0 +1,218 @@
+/* Iterating through multibyte strings: macros for multi-byte encodings.
+   Copyright (C) 2001, 2005, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>.  */
+
+/* The macros in this file implement forward iteration through a
+   multi-byte string.
+
+   With these macros, an iteration loop that looks like
+
+      char *iter;
+      for (iter = buf; iter < buf + buflen; iter++)
+        {
+          do_something (*iter);
+        }
+
+   becomes
+
+      mbi_iterator_t iter;
+      for (mbi_init (iter, buf, buflen); mbi_avail (iter); mbi_advance (iter))
+        {
+          do_something (mbi_cur_ptr (iter), mb_len (mbi_cur (iter)));
+        }
+
+   The benefit of these macros over plain use of mbrtowc is:
+   - Handling of invalid multibyte sequences is possible without
+     making the code more complicated, while still preserving the
+     invalid multibyte sequences.
+
+   mbi_iterator_t
+     is a type usable for variable declarations.
+
+   mbi_init (iter, startptr, length)
+     initializes the iterator, starting at startptr and crossing length bytes.
+
+   mbi_avail (iter)
+     returns true if there are more multibyte characters available before
+     the end of string is reached. In this case, mbi_cur (iter) is
+     initialized to the next multibyte character.
+
+   mbi_advance (iter)
+     advances the iterator by one multibyte character.
+
+   mbi_cur (iter)
+     returns the current multibyte character, of type mbchar_t.  All the
+     macros defined in mbchar.h can be used on it.
+
+   mbi_cur_ptr (iter)
+     return a pointer to the beginning of the current multibyte character.
+
+   mbi_reloc (iter, ptrdiff)
+     relocates iterator when the string is moved by ptrdiff bytes.
+
+   mbi_copy (&destiter, &srciter)
+     copies srciter to destiter.
+
+   Here are the function prototypes of the macros.
+
+   extern void          mbi_init (mbi_iterator_t iter,
+                                  const char *startptr, size_t length);
+   extern bool          mbi_avail (mbi_iterator_t iter);
+   extern void          mbi_advance (mbi_iterator_t iter);
+   extern mbchar_t      mbi_cur (mbi_iterator_t iter);
+   extern const char *  mbi_cur_ptr (mbi_iterator_t iter);
+   extern void          mbi_reloc (mbi_iterator_t iter, ptrdiff_t ptrdiff);
+   extern void          mbi_copy (mbi_iterator_t *new, const mbi_iterator_t *old);
+ */
+
+#ifndef _MBITER_H
+#define _MBITER_H 1
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+#include <wchar.h>
+
+#include "mbchar.h"
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef MBITER_INLINE
+# define MBITER_INLINE _GL_INLINE
+#endif
+
+struct mbiter_multi
+{
+  const char *limit;    /* pointer to end of string */
+  bool in_shift;        /* true if next byte may not be interpreted as ASCII */
+  mbstate_t state;      /* if in_shift: current shift state */
+  bool next_done;       /* true if mbi_avail has already filled the following */
+  struct mbchar cur;    /* the current character:
+        const char *cur.ptr             pointer to current character
+        The following are only valid after mbi_avail.
+        size_t cur.bytes                number of bytes of current character
+        bool cur.wc_valid               true if wc is a valid wide character
+        wchar_t cur.wc                  if wc_valid: the current character
+        */
+};
+
+MBITER_INLINE void
+mbiter_multi_next (struct mbiter_multi *iter)
+{
+  if (iter->next_done)
+    return;
+  if (iter->in_shift)
+    goto with_shift;
+  /* Handle most ASCII characters quickly, without calling mbrtowc().  */
+  if (is_basic (*iter->cur.ptr))
+    {
+      /* These characters are part of the basic character set.  ISO C 99
+         guarantees that their wide character code is identical to their
+         char code.  */
+      iter->cur.bytes = 1;
+      iter->cur.wc = *iter->cur.ptr;
+      iter->cur.wc_valid = true;
+    }
+  else
+    {
+      assert (mbsinit (&iter->state));
+      iter->in_shift = true;
+    with_shift:
+      iter->cur.bytes = mbrtowc (&iter->cur.wc, iter->cur.ptr,
+                                 iter->limit - iter->cur.ptr, &iter->state);
+      if (iter->cur.bytes == (size_t) -1)
+        {
+          /* An invalid multibyte sequence was encountered.  */
+          iter->cur.bytes = 1;
+          iter->cur.wc_valid = false;
+          /* Whether to set iter->in_shift = false and reset iter->state
+             or not is not very important; the string is bogus anyway.  */
+        }
+      else if (iter->cur.bytes == (size_t) -2)
+        {
+          /* An incomplete multibyte character at the end.  */
+          iter->cur.bytes = iter->limit - iter->cur.ptr;
+          iter->cur.wc_valid = false;
+          /* Whether to set iter->in_shift = false and reset iter->state
+             or not is not important; the string end is reached anyway.  */
+        }
+      else
+        {
+          if (iter->cur.bytes == 0)
+            {
+              /* A null wide character was encountered.  */
+              iter->cur.bytes = 1;
+              assert (*iter->cur.ptr == '\0');
+              assert (iter->cur.wc == 0);
+            }
+          iter->cur.wc_valid = true;
+
+          /* When in the initial state, we can go back treating ASCII
+             characters more quickly.  */
+          if (mbsinit (&iter->state))
+            iter->in_shift = false;
+        }
+    }
+  iter->next_done = true;
+}
+
+MBITER_INLINE void
+mbiter_multi_reloc (struct mbiter_multi *iter, ptrdiff_t ptrdiff)
+{
+  iter->cur.ptr += ptrdiff;
+  iter->limit += ptrdiff;
+}
+
+MBITER_INLINE void
+mbiter_multi_copy (struct mbiter_multi *new_iter, const struct mbiter_multi *old_iter)
+{
+  new_iter->limit = old_iter->limit;
+  if ((new_iter->in_shift = old_iter->in_shift))
+    memcpy (&new_iter->state, &old_iter->state, sizeof (mbstate_t));
+  else
+    memset (&new_iter->state, 0, sizeof (mbstate_t));
+  new_iter->next_done = old_iter->next_done;
+  mb_copy (&new_iter->cur, &old_iter->cur);
+}
+
+/* Iteration macros.  */
+typedef struct mbiter_multi mbi_iterator_t;
+#define mbi_init(iter, startptr, length) \
+  ((iter).cur.ptr = (startptr), (iter).limit = (iter).cur.ptr + (length), \
+   (iter).in_shift = false, memset (&(iter).state, '\0', sizeof (mbstate_t)), \
+   (iter).next_done = false)
+#define mbi_avail(iter) \
+  ((iter).cur.ptr < (iter).limit && (mbiter_multi_next (&(iter)), true))
+#define mbi_advance(iter) \
+  ((iter).cur.ptr += (iter).cur.bytes, (iter).next_done = false)
+
+/* Access to the current character.  */
+#define mbi_cur(iter) (iter).cur
+#define mbi_cur_ptr(iter) (iter).cur.ptr
+
+/* Relocation.  */
+#define mbi_reloc(iter, ptrdiff) mbiter_multi_reloc (&iter, ptrdiff)
+
+/* Copying an iterator.  */
+#define mbi_copy mbiter_multi_copy
+
+_GL_INLINE_HEADER_END
+
+#endif /* _MBITER_H */
diff --git a/src/grep/lib/mbrlen.c b/src/grep/lib/mbrlen.c
new file mode 100644
index 0000000..aca8c83
--- /dev/null
+++ b/src/grep/lib/mbrlen.c
@@ -0,0 +1,32 @@
+/* Recognize multibyte character.
+   Copyright (C) 1999-2000, 2008-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wchar.h>
+
+
+static mbstate_t internal_state;
+
+size_t
+mbrlen (const char *s, size_t n, mbstate_t *ps)
+{
+  if (ps == NULL)
+    ps = &internal_state;
+  return mbrtowc (NULL, s, n, ps);
+}
diff --git a/src/grep/lib/mbrtowc-impl-utf8.h b/src/grep/lib/mbrtowc-impl-utf8.h
new file mode 100644
index 0000000..330fb10
--- /dev/null
+++ b/src/grep/lib/mbrtowc-impl-utf8.h
@@ -0,0 +1,138 @@
+/* Convert multibyte character to wide character.
+   Copyright (C) 1999-2002, 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+/* This file contains the part of the body of the mbrtowc and mbrtoc32 functions
+   that handles the special case of the UTF-8 encoding.  */
+
+        /* Cf. unistr/u8-mbtouc.c.  */
+        unsigned char c = (unsigned char) p[0];
+
+        if (c < 0x80)
+          {
+            if (pwc != NULL)
+              *pwc = c;
+            res = (c == 0 ? 0 : 1);
+            goto success;
+          }
+        if (c >= 0xc2)
+          {
+            if (c < 0xe0)
+              {
+                if (m == 1)
+                  goto incomplete;
+                else /* m >= 2 */
+                  {
+                    unsigned char c2 = (unsigned char) p[1];
+
+                    if ((c2 ^ 0x80) < 0x40)
+                      {
+                        if (pwc != NULL)
+                          *pwc = ((unsigned int) (c & 0x1f) << 6)
+                                 | (unsigned int) (c2 ^ 0x80);
+                        res = 2;
+                        goto success;
+                      }
+                  }
+              }
+            else if (c < 0xf0)
+              {
+                if (m == 1)
+                  goto incomplete;
+                else
+                  {
+                    unsigned char c2 = (unsigned char) p[1];
+
+                    if ((c2 ^ 0x80) < 0x40
+                        && (c >= 0xe1 || c2 >= 0xa0)
+                        && (c != 0xed || c2 < 0xa0))
+                      {
+                        if (m == 2)
+                          goto incomplete;
+                        else /* m >= 3 */
+                          {
+                            unsigned char c3 = (unsigned char) p[2];
+
+                            if ((c3 ^ 0x80) < 0x40)
+                              {
+                                unsigned int wc =
+                                  (((unsigned int) (c & 0x0f) << 12)
+                                   | ((unsigned int) (c2 ^ 0x80) << 6)
+                                   | (unsigned int) (c3 ^ 0x80));
+
+                                if (FITS_IN_CHAR_TYPE (wc))
+                                  {
+                                    if (pwc != NULL)
+                                      *pwc = wc;
+                                    res = 3;
+                                    goto success;
+                                  }
+                              }
+                          }
+                      }
+                  }
+              }
+            else if (c <= 0xf4)
+              {
+                if (m == 1)
+                  goto incomplete;
+                else
+                  {
+                    unsigned char c2 = (unsigned char) p[1];
+
+                    if ((c2 ^ 0x80) < 0x40
+                        && (c >= 0xf1 || c2 >= 0x90)
+                        && (c < 0xf4 || (/* c == 0xf4 && */ c2 < 0x90)))
+                      {
+                        if (m == 2)
+                          goto incomplete;
+                        else
+                          {
+                            unsigned char c3 = (unsigned char) p[2];
+
+                            if ((c3 ^ 0x80) < 0x40)
+                              {
+                                if (m == 3)
+                                  goto incomplete;
+                                else /* m >= 4 */
+                                  {
+                                    unsigned char c4 = (unsigned char) p[3];
+
+                                    if ((c4 ^ 0x80) < 0x40)
+                                      {
+                                        unsigned int wc =
+                                          (((unsigned int) (c & 0x07) << 18)
+                                           | ((unsigned int) (c2 ^ 0x80) << 12)
+                                           | ((unsigned int) (c3 ^ 0x80) << 6)
+                                           | (unsigned int) (c4 ^ 0x80));
+
+                                        if (FITS_IN_CHAR_TYPE (wc))
+                                          {
+                                            if (pwc != NULL)
+                                              *pwc = wc;
+                                            res = 4;
+                                            goto success;
+                                          }
+                                      }
+                                  }
+                              }
+                          }
+                      }
+                  }
+              }
+          }
+        goto invalid;
diff --git a/src/grep/lib/mbrtowc-impl.h b/src/grep/lib/mbrtowc-impl.h
new file mode 100644
index 0000000..bc3e688
--- /dev/null
+++ b/src/grep/lib/mbrtowc-impl.h
@@ -0,0 +1,262 @@
+/* Convert multibyte character to wide character.
+   Copyright (C) 1999-2002, 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+/* This file contains the body of the mbrtowc and mbrtoc32 functions,
+   when GNULIB_defined_mbstate_t is defined.  */
+
+  char *pstate = (char *)ps;
+
+  if (s == NULL)
+    {
+      pwc = NULL;
+      s = "";
+      n = 1;
+    }
+
+  if (n == 0)
+    return (size_t)(-2);
+
+  /* Here n > 0.  */
+
+  if (pstate == NULL)
+    pstate = internal_state;
+
+  {
+    size_t nstate = pstate[0];
+    char buf[4];
+    const char *p;
+    size_t m;
+    enc_t enc;
+    int res;
+
+    switch (nstate)
+      {
+      case 0:
+        p = s;
+        m = n;
+        break;
+      case 3:
+        buf[2] = pstate[3];
+        FALLTHROUGH;
+      case 2:
+        buf[1] = pstate[2];
+        FALLTHROUGH;
+      case 1:
+        buf[0] = pstate[1];
+        p = buf;
+        m = nstate;
+        buf[m++] = s[0];
+        if (n >= 2 && m < 4)
+          {
+            buf[m++] = s[1];
+            if (n >= 3 && m < 4)
+              buf[m++] = s[2];
+          }
+        break;
+      default:
+        errno = EINVAL;
+        return (size_t)(-1);
+      }
+
+    /* Here m > 0.  */
+
+    enc = locale_encoding_classification ();
+
+    if (enc == enc_utf8) /* UTF-8 */
+      {
+        /* Achieve
+             - multi-thread safety and
+             - the ability to produce wide character values > WCHAR_MAX
+           by not calling mbtowc() at all.  */
+#include "mbrtowc-impl-utf8.h"
+      }
+    else
+      {
+        /* The hidden internal state of mbtowc would make this function not
+           multi-thread safe.  Achieve multi-thread safety through a lock.  */
+        wchar_t wc;
+        res = mbtowc_with_lock (&wc, p, m);
+
+        if (res >= 0)
+          {
+            if ((wc == 0) != (res == 0))
+              abort ();
+            if (pwc != NULL)
+              *pwc = wc;
+            goto success;
+          }
+
+        /* mbtowc does not distinguish between invalid and incomplete multibyte
+           sequences.  But mbrtowc needs to make this distinction.
+           There are two possible approaches:
+             - Use iconv() and its return value.
+             - Use built-in knowledge about the possible encodings.
+           Given the low quality of implementation of iconv() on the systems
+           that lack mbrtowc(), we use the second approach.
+           The possible encodings are:
+             - 8-bit encodings,
+             - EUC-JP, EUC-KR, GB2312, EUC-TW, BIG5, GB18030, SJIS,
+             - UTF-8 (already handled above).
+           Use specialized code for each.  */
+        if (m >= 4 || m >= MB_CUR_MAX)
+          goto invalid;
+        /* Here MB_CUR_MAX > 1 and 0 < m < 4.  */
+        switch (enc)
+          {
+          /* As a reference for this code, you can use the GNU libiconv
+             implementation.  Look for uses of the RET_TOOFEW macro.  */
+
+          case enc_eucjp: /* EUC-JP */
+            {
+              if (m == 1)
+                {
+                  unsigned char c = (unsigned char) p[0];
+
+                  if ((c >= 0xa1 && c < 0xff) || c == 0x8e || c == 0x8f)
+                    goto incomplete;
+                }
+              if (m == 2)
+                {
+                  unsigned char c = (unsigned char) p[0];
+
+                  if (c == 0x8f)
+                    {
+                      unsigned char c2 = (unsigned char) p[1];
+
+                      if (c2 >= 0xa1 && c2 < 0xff)
+                        goto incomplete;
+                    }
+                }
+              goto invalid;
+            }
+
+          case enc_94: /* EUC-KR, GB2312, BIG5 */
+            {
+              if (m == 1)
+                {
+                  unsigned char c = (unsigned char) p[0];
+
+                  if (c >= 0xa1 && c < 0xff)
+                    goto incomplete;
+                }
+              goto invalid;
+            }
+
+          case enc_euctw: /* EUC-TW */
+            {
+              if (m == 1)
+                {
+                  unsigned char c = (unsigned char) p[0];
+
+                  if ((c >= 0xa1 && c < 0xff) || c == 0x8e)
+                    goto incomplete;
+                }
+              else /* m == 2 || m == 3 */
+                {
+                  unsigned char c = (unsigned char) p[0];
+
+                  if (c == 0x8e)
+                    goto incomplete;
+                }
+              goto invalid;
+            }
+
+          case enc_gb18030: /* GB18030 */
+            {
+              if (m == 1)
+                {
+                  unsigned char c = (unsigned char) p[0];
+
+                  if ((c >= 0x90 && c <= 0xe3) || (c >= 0xf8 && c <= 0xfe))
+                    goto incomplete;
+                }
+              else /* m == 2 || m == 3 */
+                {
+                  unsigned char c = (unsigned char) p[0];
+
+                  if (c >= 0x90 && c <= 0xe3)
+                    {
+                      unsigned char c2 = (unsigned char) p[1];
+
+                      if (c2 >= 0x30 && c2 <= 0x39)
+                        {
+                          if (m == 2)
+                            goto incomplete;
+                          else /* m == 3 */
+                            {
+                              unsigned char c3 = (unsigned char) p[2];
+
+                              if (c3 >= 0x81 && c3 <= 0xfe)
+                                goto incomplete;
+                            }
+                        }
+                    }
+                }
+              goto invalid;
+            }
+
+          case enc_sjis: /* SJIS */
+            {
+              if (m == 1)
+                {
+                  unsigned char c = (unsigned char) p[0];
+
+                  if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xea)
+                      || (c >= 0xf0 && c <= 0xf9))
+                    goto incomplete;
+                }
+              goto invalid;
+            }
+
+          default:
+            /* An unknown multibyte encoding.  */
+            goto incomplete;
+          }
+      }
+
+   success:
+    /* res >= 0 is the corrected return value of
+       mbtowc_with_lock (&wc, p, m).  */
+    if (nstate >= (res > 0 ? res : 1))
+      abort ();
+    res -= nstate;
+    pstate[0] = 0;
+    return res;
+
+   incomplete:
+    {
+      size_t k = nstate;
+      /* Here 0 <= k < m < 4.  */
+      pstate[++k] = s[0];
+      if (k < m)
+        {
+          pstate[++k] = s[1];
+          if (k < m)
+            pstate[++k] = s[2];
+        }
+      if (k != m)
+        abort ();
+    }
+    pstate[0] = m;
+    return (size_t)(-2);
+
+   invalid:
+    errno = EILSEQ;
+    /* The conversion state is undefined, says POSIX.  */
+    return (size_t)(-1);
+  }
diff --git a/src/grep/lib/mbrtowc.c b/src/grep/lib/mbrtowc.c
new file mode 100644
index 0000000..8832f6e
--- /dev/null
+++ b/src/grep/lib/mbrtowc.c
@@ -0,0 +1,158 @@
+/* Convert multibyte character to wide character.
+   Copyright (C) 1999-2002, 2005-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wchar.h>
+
+#if GNULIB_defined_mbstate_t
+/* Implement mbrtowc() on top of mbtowc() for the non-UTF-8 locales
+   and directly for the UTF-8 locales.  */
+
+# include <errno.h>
+# include <stdint.h>
+# include <stdlib.h>
+
+# if defined _WIN32 && !defined __CYGWIN__
+
+#  define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#  include <windows.h>
+
+# elif HAVE_PTHREAD_API
+
+#  include <pthread.h>
+#  if HAVE_THREADS_H && HAVE_WEAK_SYMBOLS
+#   include <threads.h>
+#   pragma weak thrd_exit
+#   define c11_threads_in_use() (thrd_exit != NULL)
+#  else
+#   define c11_threads_in_use() 0
+#  endif
+
+# elif HAVE_THREADS_H
+
+#  include <threads.h>
+
+# endif
+
+# include "attribute.h"
+# include "verify.h"
+# include "lc-charset-dispatch.h"
+# include "mbtowc-lock.h"
+
+verify (sizeof (mbstate_t) >= 4);
+static char internal_state[4];
+
+size_t
+mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
+{
+# define FITS_IN_CHAR_TYPE(wc)  ((wc) <= WCHAR_MAX)
+# include "mbrtowc-impl.h"
+}
+
+#else
+/* Override the system's mbrtowc() function.  */
+
+# if MBRTOWC_IN_C_LOCALE_MAYBE_EILSEQ
+#  include "hard-locale.h"
+#  include <locale.h>
+# endif
+
+# undef mbrtowc
+
+size_t
+rpl_mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
+{
+  size_t ret;
+  wchar_t wc;
+
+# if MBRTOWC_NULL_ARG2_BUG || MBRTOWC_RETVAL_BUG || MBRTOWC_EMPTY_INPUT_BUG
+  if (s == NULL)
+    {
+      pwc = NULL;
+      s = "";
+      n = 1;
+    }
+# endif
+
+# if MBRTOWC_EMPTY_INPUT_BUG
+  if (n == 0)
+    return (size_t) -2;
+# endif
+
+  if (! pwc)
+    pwc = &wc;
+
+# if MBRTOWC_RETVAL_BUG
+  {
+    static mbstate_t internal_state;
+
+    /* Override mbrtowc's internal state.  We cannot call mbsinit() on the
+       hidden internal state, but we can call it on our variable.  */
+    if (ps == NULL)
+      ps = &internal_state;
+
+    if (!mbsinit (ps))
+      {
+        /* Parse the rest of the multibyte character byte for byte.  */
+        size_t count = 0;
+        for (; n > 0; s++, n--)
+          {
+            ret = mbrtowc (&wc, s, 1, ps);
+
+            if (ret == (size_t)(-1))
+              return (size_t)(-1);
+            count++;
+            if (ret != (size_t)(-2))
+              {
+                /* The multibyte character has been completed.  */
+                *pwc = wc;
+                return (wc == 0 ? 0 : count);
+              }
+          }
+        return (size_t)(-2);
+      }
+  }
+# endif
+
+# if MBRTOWC_STORES_INCOMPLETE_BUG
+  ret = mbrtowc (&wc, s, n, ps);
+  if (ret < (size_t) -2 && pwc != NULL)
+    *pwc = wc;
+# else
+  ret = mbrtowc (pwc, s, n, ps);
+# endif
+
+# if MBRTOWC_NUL_RETVAL_BUG
+  if (ret < (size_t) -2 && !*pwc)
+    return 0;
+# endif
+
+# if MBRTOWC_IN_C_LOCALE_MAYBE_EILSEQ
+  if ((size_t) -2 <= ret && n != 0 && ! hard_locale (LC_CTYPE))
+    {
+      unsigned char uc = *s;
+      *pwc = uc;
+      return 1;
+    }
+# endif
+
+  return ret;
+}
+
+#endif
diff --git a/src/grep/lib/mbscasecmp.c b/src/grep/lib/mbscasecmp.c
new file mode 100644
index 0000000..cad1de5
--- /dev/null
+++ b/src/grep/lib/mbscasecmp.c
@@ -0,0 +1,98 @@
+/* Case-insensitive string comparison function.
+   Copyright (C) 1998-1999, 2005-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2005,
+   based on earlier glibc code.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <string.h>
+
+#include <ctype.h>
+#include <limits.h>
+
+#include "mbuiter.h"
+
+#define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch))
+
+/* Compare the character strings S1 and S2, ignoring case, returning less than,
+   equal to or greater than zero if S1 is lexicographically less than, equal to
+   or greater than S2.
+   Note: This function may, in multibyte locales, return 0 for strings of
+   different lengths!  */
+int
+mbscasecmp (const char *s1, const char *s2)
+{
+  if (s1 == s2)
+    return 0;
+
+  /* Be careful not to look at the entire extent of s1 or s2 until needed.
+     This is useful because when two strings differ, the difference is
+     most often already in the very few first characters.  */
+  if (MB_CUR_MAX > 1)
+    {
+      mbui_iterator_t iter1;
+      mbui_iterator_t iter2;
+
+      mbui_init (iter1, s1);
+      mbui_init (iter2, s2);
+
+      while (mbui_avail (iter1) && mbui_avail (iter2))
+        {
+          int cmp = mb_casecmp (mbui_cur (iter1), mbui_cur (iter2));
+
+          if (cmp != 0)
+            return cmp;
+
+          mbui_advance (iter1);
+          mbui_advance (iter2);
+        }
+      if (mbui_avail (iter1))
+        /* s2 terminated before s1.  */
+        return 1;
+      if (mbui_avail (iter2))
+        /* s1 terminated before s2.  */
+        return -1;
+      return 0;
+    }
+  else
+    {
+      const unsigned char *p1 = (const unsigned char *) s1;
+      const unsigned char *p2 = (const unsigned char *) s2;
+      unsigned char c1, c2;
+
+      do
+        {
+          c1 = TOLOWER (*p1);
+          c2 = TOLOWER (*p2);
+
+          if (c1 == '\0')
+            break;
+
+          ++p1;
+          ++p2;
+        }
+      while (c1 == c2);
+
+      if (UCHAR_MAX <= INT_MAX)
+        return c1 - c2;
+      else
+        /* On machines where 'char' and 'int' are types of the same size, the
+           difference of two 'unsigned char' values - including the sign bit -
+           doesn't fit in an 'int'.  */
+        return _GL_CMP (c1, c2);
+    }
+}
diff --git a/src/grep/lib/mbsinit.c b/src/grep/lib/mbsinit.c
new file mode 100644
index 0000000..f440155
--- /dev/null
+++ b/src/grep/lib/mbsinit.c
@@ -0,0 +1,70 @@
+/* Test for initial conversion state.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wchar.h>
+
+#include "verify.h"
+
+#if GNULIB_defined_mbstate_t
+
+/* Platforms that lack mbsinit() also lack mbrlen(), mbrtowc(), mbsrtowcs()
+   and wcrtomb(), wcsrtombs().
+   We assume that
+     - sizeof (mbstate_t) >= 4,
+     - only stateless encodings are supported (such as UTF-8 and EUC-JP, but
+       not ISO-2022 variants),
+     - for each encoding, the number of bytes for a wide character is <= 4.
+       (This maximum is attained for UTF-8, GB18030, EUC-TW.)
+   We define the meaning of mbstate_t as follows:
+     - In mb -> wc direction, mbstate_t's first byte contains the number of
+       buffered bytes (in the range 0..3), followed by up to 3 buffered bytes.
+       See mbrtowc.c.
+     - In wc -> mb direction, mbstate_t contains no information. In other
+       words, it is always in the initial state.  */
+
+verify (sizeof (mbstate_t) >= 4);
+
+int
+mbsinit (const mbstate_t *ps)
+{
+  const char *pstate = (const char *)ps;
+
+  return pstate == NULL || pstate[0] == 0;
+}
+
+#else
+
+int
+mbsinit (const mbstate_t *ps)
+{
+# if defined _WIN32 && !defined __CYGWIN__
+  /* Native Windows.  */
+  /* MSVC defines 'mbstate_t' as an 8-byte struct; the first 4 bytes matter.
+     On mingw, 'mbstate_t' is sometimes defined as 'int', sometimes defined as
+     an 8-byte struct, of which the first 4 bytes matter.  */
+  return ps == NULL || *(const unsigned int *)ps == 0;
+# else
+  /* Minix, HP-UX 11.00, Solaris 2.6, Interix, ...  */
+  /* Maybe this definition works, maybe not...  */
+  return ps == NULL || *(const char *)ps == 0;
+# endif
+}
+
+#endif
diff --git a/src/grep/lib/mbslen.c b/src/grep/lib/mbslen.c
new file mode 100644
index 0000000..8517f51
--- /dev/null
+++ b/src/grep/lib/mbslen.c
@@ -0,0 +1,44 @@
+/* Counting the multibyte characters in a string.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2007.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <string.h>
+
+#include <stdlib.h>
+
+#include "mbuiter.h"
+
+/* Return the number of multibyte characters in the character string STRING.  */
+size_t
+mbslen (const char *string)
+{
+  if (MB_CUR_MAX > 1)
+    {
+      size_t count;
+      mbui_iterator_t iter;
+
+      count = 0;
+      for (mbui_init (iter, string); mbui_avail (iter); mbui_advance (iter))
+        count++;
+
+      return count;
+    }
+  else
+    return strlen (string);
+}
diff --git a/src/grep/lib/mbsrtowcs-impl.h b/src/grep/lib/mbsrtowcs-impl.h
new file mode 100644
index 0000000..ab3bab5
--- /dev/null
+++ b/src/grep/lib/mbsrtowcs-impl.h
@@ -0,0 +1,122 @@
+/* Convert string to wide string.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+size_t
+FUNC (DCHAR_T *dest, const char **srcp, size_t len, mbstate_t *ps)
+{
+  if (ps == NULL)
+    ps = &INTERNAL_STATE;
+  {
+    const char *src = *srcp;
+
+    if (dest != NULL)
+      {
+        DCHAR_T *destptr = dest;
+
+        for (; len > 0; destptr++, len--)
+          {
+            size_t src_avail;
+            size_t ret;
+
+            /* An optimized variant of
+               src_avail = strnlen1 (src, MB_LEN_MAX);  */
+            if (src[0] == '\0')
+              src_avail = 1;
+            else if (src[1] == '\0')
+              src_avail = 2;
+            else if (src[2] == '\0')
+              src_avail = 3;
+            else if (MB_LEN_MAX <= 4 || src[3] == '\0')
+              src_avail = 4;
+            else
+              src_avail = 4 + strnlen1 (src + 4, MB_LEN_MAX - 4);
+
+            /* Parse the next multibyte character.  */
+            ret = MBRTOWC (destptr, src, src_avail, ps);
+
+            if (ret == (size_t)(-2))
+              /* Encountered a multibyte character that extends past a '\0' byte
+                 or that is longer than MB_LEN_MAX bytes.  Cannot happen.  */
+              abort ();
+
+            if (ret == (size_t)(-1))
+              goto bad_input;
+            if (ret == 0)
+              {
+                src = NULL;
+                /* Here mbsinit (ps).  */
+                break;
+              }
+            src += ret;
+          }
+
+        *srcp = src;
+        return destptr - dest;
+      }
+    else
+      {
+        /* Ignore dest and len, don't store *srcp at the end, and
+           don't clobber *ps.  */
+        mbstate_t state = *ps;
+        size_t totalcount = 0;
+
+        for (;; totalcount++)
+          {
+            size_t src_avail;
+            size_t ret;
+
+            /* An optimized variant of
+               src_avail = strnlen1 (src, MB_LEN_MAX);  */
+            if (src[0] == '\0')
+              src_avail = 1;
+            else if (src[1] == '\0')
+              src_avail = 2;
+            else if (src[2] == '\0')
+              src_avail = 3;
+            else if (MB_LEN_MAX <= 4 || src[3] == '\0')
+              src_avail = 4;
+            else
+              src_avail = 4 + strnlen1 (src + 4, MB_LEN_MAX - 4);
+
+            /* Parse the next multibyte character.  */
+            ret = MBRTOWC (NULL, src, src_avail, &state);
+
+            if (ret == (size_t)(-2))
+              /* Encountered a multibyte character that extends past a '\0' byte
+                 or that is longer than MB_LEN_MAX bytes.  Cannot happen.  */
+              abort ();
+
+            if (ret == (size_t)(-1))
+              goto bad_input2;
+            if (ret == 0)
+              {
+                /* Here mbsinit (&state).  */
+                break;
+              }
+            src += ret;
+          }
+
+        return totalcount;
+      }
+
+   bad_input:
+    *srcp = src;
+   bad_input2:
+    errno = EILSEQ;
+    return (size_t)(-1);
+  }
+}
diff --git a/src/grep/lib/mbsrtowcs-state.c b/src/grep/lib/mbsrtowcs-state.c
new file mode 100644
index 0000000..83445fe
--- /dev/null
+++ b/src/grep/lib/mbsrtowcs-state.c
@@ -0,0 +1,37 @@
+/* Convert string to wide string.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <wchar.h>
+
+/* Internal state used by the functions mbsrtowcs() and mbsnrtowcs().  */
+mbstate_t _gl_mbsrtowcs_state
+/* The state must initially be in the "initial state"; so, zero-initialize it.
+   On most systems, putting it into BSS is sufficient.  Not so on Mac OS X 10.3,
+   see <https://lists.gnu.org/r/bug-gnulib/2009-01/msg00329.html>.
+   When it needs an initializer, use 0 or {0} as initializer? 0 only works
+   when mbstate_t is a scalar type (such as when gnulib defines it, or on
+   AIX, IRIX, mingw). {0} works as an initializer in all cases: for a struct
+   or union type, but also for a scalar type (ISO C 99, 6.7.8.(11)).  */
+#if defined __ELF__
+  /* On ELF systems, variables in BSS behave well.  */
+#else
+  /* Use braces, to be on the safe side.  */
+  = { 0 }
+#endif
+  ;
diff --git a/src/grep/lib/mbsrtowcs.c b/src/grep/lib/mbsrtowcs.c
new file mode 100644
index 0000000..64fb9ff
--- /dev/null
+++ b/src/grep/lib/mbsrtowcs.c
@@ -0,0 +1,36 @@
+/* Convert string to wide string.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wchar.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+
+#include "strnlen1.h"
+
+
+extern mbstate_t _gl_mbsrtowcs_state;
+
+#define FUNC mbsrtowcs
+#define DCHAR_T wchar_t
+#define INTERNAL_STATE _gl_mbsrtowcs_state
+#define MBRTOWC mbrtowc
+#include "mbsrtowcs-impl.h"
diff --git a/src/grep/lib/mbsstr.c b/src/grep/lib/mbsstr.c
new file mode 100644
index 0000000..aafe931
--- /dev/null
+++ b/src/grep/lib/mbsstr.c
@@ -0,0 +1,385 @@
+/* Searching in a string.  -*- coding: utf-8 -*-
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2005.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <string.h>
+
+#include <stdbool.h>
+#include <stddef.h>  /* for NULL, in case a nonstandard string.h lacks it */
+#include <stdlib.h>
+
+#include "malloca.h"
+#include "mbuiter.h"
+
+/* Knuth-Morris-Pratt algorithm.  */
+#define UNIT unsigned char
+#define CANON_ELEMENT(c) c
+#include "str-kmp.h"
+
+/* Knuth-Morris-Pratt algorithm.
+   See https://en.wikipedia.org/wiki/Knuth-Morris-Pratt_algorithm
+   Return a boolean indicating success:
+   Return true and set *RESULTP if the search was completed.
+   Return false if it was aborted because not enough memory was available.  */
+static bool
+knuth_morris_pratt_multibyte (const char *haystack, const char *needle,
+                              const char **resultp)
+{
+  size_t m = mbslen (needle);
+  mbchar_t *needle_mbchars;
+  size_t *table;
+
+  /* Allocate room for needle_mbchars and the table.  */
+  void *memory = nmalloca (m, sizeof (mbchar_t) + sizeof (size_t));
+  void *table_memory;
+  if (memory == NULL)
+    return false;
+  needle_mbchars = memory;
+  table_memory = needle_mbchars + m;
+  table = table_memory;
+
+  /* Fill needle_mbchars.  */
+  {
+    mbui_iterator_t iter;
+    size_t j;
+
+    j = 0;
+    for (mbui_init (iter, needle); mbui_avail (iter); mbui_advance (iter), j++)
+      mb_copy (&needle_mbchars[j], &mbui_cur (iter));
+  }
+
+  /* Fill the table.
+     For 0 < i < m:
+       0 < table[i] <= i is defined such that
+       forall 0 < x < table[i]: needle[x..i-1] != needle[0..i-1-x],
+       and table[i] is as large as possible with this property.
+     This implies:
+     1) For 0 < i < m:
+          If table[i] < i,
+          needle[table[i]..i-1] = needle[0..i-1-table[i]].
+     2) For 0 < i < m:
+          rhaystack[0..i-1] == needle[0..i-1]
+          and exists h, i <= h < m: rhaystack[h] != needle[h]
+          implies
+          forall 0 <= x < table[i]: rhaystack[x..x+m-1] != needle[0..m-1].
+     table[0] remains uninitialized.  */
+  {
+    size_t i, j;
+
+    /* i = 1: Nothing to verify for x = 0.  */
+    table[1] = 1;
+    j = 0;
+
+    for (i = 2; i < m; i++)
+      {
+        /* Here: j = i-1 - table[i-1].
+           The inequality needle[x..i-1] != needle[0..i-1-x] is known to hold
+           for x < table[i-1], by induction.
+           Furthermore, if j>0: needle[i-1-j..i-2] = needle[0..j-1].  */
+        mbchar_t *b = &needle_mbchars[i - 1];
+
+        for (;;)
+          {
+            /* Invariants: The inequality needle[x..i-1] != needle[0..i-1-x]
+               is known to hold for x < i-1-j.
+               Furthermore, if j>0: needle[i-1-j..i-2] = needle[0..j-1].  */
+            if (mb_equal (*b, needle_mbchars[j]))
+              {
+                /* Set table[i] := i-1-j.  */
+                table[i] = i - ++j;
+                break;
+              }
+            /* The inequality needle[x..i-1] != needle[0..i-1-x] also holds
+               for x = i-1-j, because
+                 needle[i-1] != needle[j] = needle[i-1-x].  */
+            if (j == 0)
+              {
+                /* The inequality holds for all possible x.  */
+                table[i] = i;
+                break;
+              }
+            /* The inequality needle[x..i-1] != needle[0..i-1-x] also holds
+               for i-1-j < x < i-1-j+table[j], because for these x:
+                 needle[x..i-2]
+                 = needle[x-(i-1-j)..j-1]
+                 != needle[0..j-1-(x-(i-1-j))]  (by definition of table[j])
+                    = needle[0..i-2-x],
+               hence needle[x..i-1] != needle[0..i-1-x].
+               Furthermore
+                 needle[i-1-j+table[j]..i-2]
+                 = needle[table[j]..j-1]
+                 = needle[0..j-1-table[j]]  (by definition of table[j]).  */
+            j = j - table[j];
+          }
+        /* Here: j = i - table[i].  */
+      }
+  }
+
+  /* Search, using the table to accelerate the processing.  */
+  {
+    size_t j;
+    mbui_iterator_t rhaystack;
+    mbui_iterator_t phaystack;
+
+    *resultp = NULL;
+    j = 0;
+    mbui_init (rhaystack, haystack);
+    mbui_init (phaystack, haystack);
+    /* Invariant: phaystack = rhaystack + j.  */
+    while (mbui_avail (phaystack))
+      if (mb_equal (needle_mbchars[j], mbui_cur (phaystack)))
+        {
+          j++;
+          mbui_advance (phaystack);
+          if (j == m)
+            {
+              /* The entire needle has been found.  */
+              *resultp = mbui_cur_ptr (rhaystack);
+              break;
+            }
+        }
+      else if (j > 0)
+        {
+          /* Found a match of needle[0..j-1], mismatch at needle[j].  */
+          size_t count = table[j];
+          j -= count;
+          for (; count > 0; count--)
+            {
+              if (!mbui_avail (rhaystack))
+                abort ();
+              mbui_advance (rhaystack);
+            }
+        }
+      else
+        {
+          /* Found a mismatch at needle[0] already.  */
+          if (!mbui_avail (rhaystack))
+            abort ();
+          mbui_advance (rhaystack);
+          mbui_advance (phaystack);
+        }
+  }
+
+  freea (memory);
+  return true;
+}
+
+/* Find the first occurrence of the character string NEEDLE in the character
+   string HAYSTACK.  Return NULL if NEEDLE is not found in HAYSTACK.  */
+char *
+mbsstr (const char *haystack, const char *needle)
+{
+  /* Be careful not to look at the entire extent of haystack or needle
+     until needed.  This is useful because of these two cases:
+       - haystack may be very long, and a match of needle found early,
+       - needle may be very long, and not even a short initial segment of
+         needle may be found in haystack.  */
+  if (MB_CUR_MAX > 1)
+    {
+      mbui_iterator_t iter_needle;
+
+      mbui_init (iter_needle, needle);
+      if (mbui_avail (iter_needle))
+        {
+          /* Minimizing the worst-case complexity:
+             Let n = mbslen(haystack), m = mbslen(needle).
+             The naïve algorithm is O(n*m) worst-case.
+             The Knuth-Morris-Pratt algorithm is O(n) worst-case but it needs a
+             memory allocation.
+             To achieve linear complexity and yet amortize the cost of the
+             memory allocation, we activate the Knuth-Morris-Pratt algorithm
+             only once the naïve algorithm has already run for some time; more
+             precisely, when
+               - the outer loop count is >= 10,
+               - the average number of comparisons per outer loop is >= 5,
+               - the total number of comparisons is >= m.
+             But we try it only once.  If the memory allocation attempt failed,
+             we don't retry it.  */
+          bool try_kmp = true;
+          size_t outer_loop_count = 0;
+          size_t comparison_count = 0;
+          size_t last_ccount = 0;                  /* last comparison count */
+          mbui_iterator_t iter_needle_last_ccount; /* = needle + last_ccount */
+
+          mbui_iterator_t iter_haystack;
+
+          mbui_init (iter_needle_last_ccount, needle);
+          mbui_init (iter_haystack, haystack);
+          for (;; mbui_advance (iter_haystack))
+            {
+              if (!mbui_avail (iter_haystack))
+                /* No match.  */
+                return NULL;
+
+              /* See whether it's advisable to use an asymptotically faster
+                 algorithm.  */
+              if (try_kmp
+                  && outer_loop_count >= 10
+                  && comparison_count >= 5 * outer_loop_count)
+                {
+                  /* See if needle + comparison_count now reaches the end of
+                     needle.  */
+                  size_t count = comparison_count - last_ccount;
+                  for (;
+                       count > 0 && mbui_avail (iter_needle_last_ccount);
+                       count--)
+                    mbui_advance (iter_needle_last_ccount);
+                  last_ccount = comparison_count;
+                  if (!mbui_avail (iter_needle_last_ccount))
+                    {
+                      /* Try the Knuth-Morris-Pratt algorithm.  */
+                      const char *result;
+                      bool success =
+                        knuth_morris_pratt_multibyte (haystack, needle,
+                                                      &result);
+                      if (success)
+                        return (char *) result;
+                      try_kmp = false;
+                    }
+                }
+
+              outer_loop_count++;
+              comparison_count++;
+              if (mb_equal (mbui_cur (iter_haystack), mbui_cur (iter_needle)))
+                /* The first character matches.  */
+                {
+                  mbui_iterator_t rhaystack;
+                  mbui_iterator_t rneedle;
+
+                  memcpy (&rhaystack, &iter_haystack, sizeof (mbui_iterator_t));
+                  mbui_advance (rhaystack);
+
+                  mbui_init (rneedle, needle);
+                  if (!mbui_avail (rneedle))
+                    abort ();
+                  mbui_advance (rneedle);
+
+                  for (;; mbui_advance (rhaystack), mbui_advance (rneedle))
+                    {
+                      if (!mbui_avail (rneedle))
+                        /* Found a match.  */
+                        return (char *) mbui_cur_ptr (iter_haystack);
+                      if (!mbui_avail (rhaystack))
+                        /* No match.  */
+                        return NULL;
+                      comparison_count++;
+                      if (!mb_equal (mbui_cur (rhaystack), mbui_cur (rneedle)))
+                        /* Nothing in this round.  */
+                        break;
+                    }
+                }
+            }
+        }
+      else
+        return (char *) haystack;
+    }
+  else
+    {
+      if (*needle != '\0')
+        {
+          /* Minimizing the worst-case complexity:
+             Let n = strlen(haystack), m = strlen(needle).
+             The naïve algorithm is O(n*m) worst-case.
+             The Knuth-Morris-Pratt algorithm is O(n) worst-case but it needs a
+             memory allocation.
+             To achieve linear complexity and yet amortize the cost of the
+             memory allocation, we activate the Knuth-Morris-Pratt algorithm
+             only once the naïve algorithm has already run for some time; more
+             precisely, when
+               - the outer loop count is >= 10,
+               - the average number of comparisons per outer loop is >= 5,
+               - the total number of comparisons is >= m.
+             But we try it only once.  If the memory allocation attempt failed,
+             we don't retry it.  */
+          bool try_kmp = true;
+          size_t outer_loop_count = 0;
+          size_t comparison_count = 0;
+          size_t last_ccount = 0;                  /* last comparison count */
+          const char *needle_last_ccount = needle; /* = needle + last_ccount */
+
+          /* Speed up the following searches of needle by caching its first
+             character.  */
+          char b = *needle++;
+
+          for (;; haystack++)
+            {
+              if (*haystack == '\0')
+                /* No match.  */
+                return NULL;
+
+              /* See whether it's advisable to use an asymptotically faster
+                 algorithm.  */
+              if (try_kmp
+                  && outer_loop_count >= 10
+                  && comparison_count >= 5 * outer_loop_count)
+                {
+                  /* See if needle + comparison_count now reaches the end of
+                     needle.  */
+                  if (needle_last_ccount != NULL)
+                    {
+                      needle_last_ccount +=
+                        strnlen (needle_last_ccount,
+                                 comparison_count - last_ccount);
+                      if (*needle_last_ccount == '\0')
+                        needle_last_ccount = NULL;
+                      last_ccount = comparison_count;
+                    }
+                  if (needle_last_ccount == NULL)
+                    {
+                      /* Try the Knuth-Morris-Pratt algorithm.  */
+                      const unsigned char *result;
+                      bool success =
+                        knuth_morris_pratt ((const unsigned char *) haystack,
+                                            (const unsigned char *) (needle - 1),
+                                            strlen (needle - 1),
+                                            &result);
+                      if (success)
+                        return (char *) result;
+                      try_kmp = false;
+                    }
+                }
+
+              outer_loop_count++;
+              comparison_count++;
+              if (*haystack == b)
+                /* The first character matches.  */
+                {
+                  const char *rhaystack = haystack + 1;
+                  const char *rneedle = needle;
+
+                  for (;; rhaystack++, rneedle++)
+                    {
+                      if (*rneedle == '\0')
+                        /* Found a match.  */
+                        return (char *) haystack;
+                      if (*rhaystack == '\0')
+                        /* No match.  */
+                        return NULL;
+                      comparison_count++;
+                      if (*rhaystack != *rneedle)
+                        /* Nothing in this round.  */
+                        break;
+                    }
+                }
+            }
+        }
+      else
+        return (char *) haystack;
+    }
+}
diff --git a/src/grep/lib/mbtowc-impl.h b/src/grep/lib/mbtowc-impl.h
new file mode 100644
index 0000000..30d715d
--- /dev/null
+++ b/src/grep/lib/mbtowc-impl.h
@@ -0,0 +1,44 @@
+/* Convert multibyte character to wide character.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* We don't need a static internal state, because the encoding is not state
+   dependent, and when mbrtowc returns (size_t)(-2). we throw the result
+   away. */
+
+int
+mbtowc (wchar_t *pwc, const char *s, size_t n)
+{
+  if (s == NULL)
+    return 0;
+  else
+    {
+      mbstate_t state;
+      wchar_t wc;
+      size_t result;
+
+      memset (&state, 0, sizeof (mbstate_t));
+      result = mbrtowc (&wc, s, n, &state);
+      if (result == (size_t)-1 || result == (size_t)-2)
+        {
+          errno = EILSEQ;
+          return -1;
+        }
+      if (pwc != NULL)
+        *pwc = wc;
+      return (wc == 0 ? 0 : result);
+    }
+}
diff --git a/src/grep/lib/mbtowc-lock.c b/src/grep/lib/mbtowc-lock.c
new file mode 100644
index 0000000..0f7ae6c
--- /dev/null
+++ b/src/grep/lib/mbtowc-lock.c
@@ -0,0 +1,150 @@
+/* Return the internal lock used by mbrtowc and mbrtoc32.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019-2020.  */
+
+#include <config.h>
+
+/* When it is known that the gl_get_mbtowc_lock function is defined
+   by a dependency library, it should not be defined here.  */
+#if OMIT_MBTOWC_LOCK
+
+/* This declaration is solely to ensure that after preprocessing
+   this file is never empty.  */
+typedef int dummy;
+
+#else
+
+/* This file defines the internal lock used by mbrtowc and mbrtoc32.
+   It is a separate compilation unit, so that only one copy of it is
+   present when linking statically.  */
+
+/* Prohibit renaming this symbol.  */
+# undef gl_get_mbtowc_lock
+
+/* Macro for exporting a symbol (function, not variable) defined in this file,
+   when compiled into a shared library.  */
+# ifndef DLL_EXPORTED
+#  if HAVE_VISIBILITY
+  /* Override the effect of the compiler option '-fvisibility=hidden'.  */
+#   define DLL_EXPORTED __attribute__((__visibility__("default")))
+#  elif defined _WIN32 || defined __CYGWIN__
+#   define DLL_EXPORTED __declspec(dllexport)
+#  else
+#   define DLL_EXPORTED
+#  endif
+# endif
+
+# if defined _WIN32 && !defined __CYGWIN__
+
+#  define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#  include <windows.h>
+
+#  include "windows-initguard.h"
+
+/* The return type is a 'CRITICAL_SECTION *', not a 'glwthread_mutex_t *',
+   because the latter is not guaranteed to be a stable ABI in the future.  */
+
+/* Make sure the function gets exported from DLLs.  */
+DLL_EXPORTED CRITICAL_SECTION *gl_get_mbtowc_lock (void);
+
+static glwthread_initguard_t guard = GLWTHREAD_INITGUARD_INIT;
+static CRITICAL_SECTION lock;
+
+/* Returns the internal lock used by mbrtowc and mbrtoc32.  */
+CRITICAL_SECTION *
+gl_get_mbtowc_lock (void)
+{
+  if (!guard.done)
+    {
+      if (InterlockedIncrement (&guard.started) == 0)
+        {
+          /* This thread is the first one to need the lock.  Initialize it.  */
+          InitializeCriticalSection (&lock);
+          guard.done = 1;
+        }
+      else
+        {
+          /* Don't let guard.started grow and wrap around.  */
+          InterlockedDecrement (&guard.started);
+          /* Yield the CPU while waiting for another thread to finish
+             initializing this mutex.  */
+          while (!guard.done)
+            Sleep (0);
+        }
+    }
+  return &lock;
+}
+
+# elif HAVE_PTHREAD_API
+
+#  include <pthread.h>
+
+static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+
+/* Make sure the function gets exported from shared libraries.  */
+DLL_EXPORTED pthread_mutex_t *gl_get_mbtowc_lock (void);
+
+/* Returns the internal lock used by mbrtowc and mbrtoc32.  */
+pthread_mutex_t *
+gl_get_mbtowc_lock (void)
+{
+  return &mutex;
+}
+
+# elif HAVE_THREADS_H
+
+#  include <threads.h>
+#  include <stdlib.h>
+
+static int volatile init_needed = 1;
+static once_flag init_once = ONCE_FLAG_INIT;
+static mtx_t mutex;
+
+static void
+atomic_init (void)
+{
+  if (mtx_init (&mutex, mtx_plain) != thrd_success)
+    abort ();
+  init_needed = 0;
+}
+
+/* Make sure the function gets exported from shared libraries.  */
+DLL_EXPORTED mtx_t *gl_get_mbtowc_lock (void);
+
+/* Returns the internal lock used by mbrtowc and mbrtoc32.  */
+mtx_t *
+gl_get_mbtowc_lock (void)
+{
+  if (init_needed)
+    call_once (&init_once, atomic_init);
+  return &mutex;
+}
+
+# endif
+
+# if (defined _WIN32 || defined __CYGWIN__) && !defined _MSC_VER
+/* Make sure the '__declspec(dllimport)' in mbrtowc.c and mbrtoc32.c does not
+   cause a link failure when no DLLs are involved.  */
+#  if defined _WIN64 || defined _LP64
+#   define IMP(x) __imp_##x
+#  else
+#   define IMP(x) _imp__##x
+#  endif
+void * IMP(gl_get_mbtowc_lock) = &gl_get_mbtowc_lock;
+# endif
+
+#endif
diff --git a/src/grep/lib/mbtowc-lock.h b/src/grep/lib/mbtowc-lock.h
new file mode 100644
index 0000000..d31b0b6
--- /dev/null
+++ b/src/grep/lib/mbtowc-lock.h
@@ -0,0 +1,125 @@
+/* Use the internal lock used by mbrtowc and mbrtoc32.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019-2020.  */
+
+/* Use a lock, so that no two threads can invoke mbtowc at the same time.  */
+
+static inline int
+mbtowc_unlocked (wchar_t *pwc, const char *p, size_t m)
+{
+  /* Put the hidden internal state of mbtowc into its initial state.
+     This is needed at least with glibc, uClibc, and MSVC CRT.
+     See <https://sourceware.org/bugzilla/show_bug.cgi?id=9674>.  */
+  mbtowc (NULL, NULL, 0);
+
+  return mbtowc (pwc, p, m);
+}
+
+/* Prohibit renaming this symbol.  */
+#undef gl_get_mbtowc_lock
+
+#if GNULIB_MBRTOWC_SINGLE_THREAD
+
+/* All uses of this function are in a single thread.  No locking needed.  */
+
+static int
+mbtowc_with_lock (wchar_t *pwc, const char *p, size_t m)
+{
+  return mbtowc_unlocked (pwc, p, m);
+}
+
+#elif defined _WIN32 && !defined __CYGWIN__
+
+extern __declspec(dllimport) CRITICAL_SECTION *gl_get_mbtowc_lock (void);
+
+static int
+mbtowc_with_lock (wchar_t *pwc, const char *p, size_t m)
+{
+  CRITICAL_SECTION *lock = gl_get_mbtowc_lock ();
+  int ret;
+
+  EnterCriticalSection (lock);
+  ret = mbtowc_unlocked (pwc, p, m);
+  LeaveCriticalSection (lock);
+
+  return ret;
+}
+
+#elif HAVE_PTHREAD_API /* AIX, IRIX, Cygwin */
+
+extern
+# if defined _WIN32 || defined __CYGWIN__
+  __declspec(dllimport)
+# endif
+  pthread_mutex_t *gl_get_mbtowc_lock (void);
+
+# if HAVE_WEAK_SYMBOLS /* IRIX */
+
+   /* Avoid the need to link with '-lpthread'.  */
+#  pragma weak pthread_mutex_lock
+#  pragma weak pthread_mutex_unlock
+
+   /* Determine whether libpthread is in use.  */
+#  pragma weak pthread_mutexattr_gettype
+   /* See the comments in lock.h.  */
+#  define pthread_in_use() \
+     (pthread_mutexattr_gettype != NULL || c11_threads_in_use ())
+
+# else
+#  define pthread_in_use() 1
+# endif
+
+static int
+mbtowc_with_lock (wchar_t *pwc, const char *p, size_t m)
+{
+  if (pthread_in_use())
+    {
+      pthread_mutex_t *lock = gl_get_mbtowc_lock ();
+      int ret;
+
+      if (pthread_mutex_lock (lock))
+        abort ();
+      ret = mbtowc_unlocked (pwc, p, m);
+      if (pthread_mutex_unlock (lock))
+        abort ();
+
+      return ret;
+    }
+  else
+    return mbtowc_unlocked (pwc, p, m);
+}
+
+#elif HAVE_THREADS_H
+
+extern mtx_t *gl_get_mbtowc_lock (void);
+
+static int
+mbtowc_with_lock (wchar_t *pwc, const char *p, size_t m)
+{
+  mtx_t *lock = gl_get_mbtowc_lock ();
+  int ret;
+
+  if (mtx_lock (lock) != thrd_success)
+    abort ();
+  ret = mbtowc_unlocked (pwc, p, m);
+  if (mtx_unlock (lock) != thrd_success)
+    abort ();
+
+  return ret;
+}
+
+#endif
diff --git a/src/grep/lib/mbtowc.c b/src/grep/lib/mbtowc.c
new file mode 100644
index 0000000..47b431a
--- /dev/null
+++ b/src/grep/lib/mbtowc.c
@@ -0,0 +1,26 @@
+/* Convert multibyte character to wide character.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include <errno.h>
+#include <string.h>
+#include <wchar.h>
+
+#include "mbtowc-impl.h"
diff --git a/src/grep/lib/mbuiter.c b/src/grep/lib/mbuiter.c
new file mode 100644
index 0000000..d740bb0
--- /dev/null
+++ b/src/grep/lib/mbuiter.c
@@ -0,0 +1,20 @@
+/* Iterating through multibyte strings: macros for multi-byte encodings.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define MBUITER_INLINE _GL_EXTERN_INLINE
+#include "mbuiter.h"
diff --git a/src/grep/lib/mbuiter.h b/src/grep/lib/mbuiter.h
new file mode 100644
index 0000000..8e87c5c
--- /dev/null
+++ b/src/grep/lib/mbuiter.h
@@ -0,0 +1,225 @@
+/* Iterating through multibyte strings: macros for multi-byte encodings.
+   Copyright (C) 2001, 2005, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>.  */
+
+/* The macros in this file implement forward iteration through a
+   multi-byte string, without knowing its length a-priori.
+
+   With these macros, an iteration loop that looks like
+
+      char *iter;
+      for (iter = buf; *iter != '\0'; iter++)
+        {
+          do_something (*iter);
+        }
+
+   becomes
+
+      mbui_iterator_t iter;
+      for (mbui_init (iter, buf); mbui_avail (iter); mbui_advance (iter))
+        {
+          do_something (mbui_cur_ptr (iter), mb_len (mbui_cur (iter)));
+        }
+
+   The benefit of these macros over plain use of mbrtowc is:
+   - Handling of invalid multibyte sequences is possible without
+     making the code more complicated, while still preserving the
+     invalid multibyte sequences.
+
+   Compared to mbiter.h, the macros here don't need to know the string's
+   length a-priori.  The downside is that at each step, the look-ahead
+   that guards against overrunning the terminating '\0' is more expensive.
+   The mbui_* macros are therefore suitable when there is a high probability
+   that only the first few multibyte characters need to be inspected.
+   Whereas the mbi_* macros are better if usually the iteration runs
+   through the entire string.
+
+   mbui_iterator_t
+     is a type usable for variable declarations.
+
+   mbui_init (iter, startptr)
+     initializes the iterator, starting at startptr.
+
+   mbui_avail (iter)
+     returns true if there are more multibyte characters available before
+     the end of string is reached. In this case, mbui_cur (iter) is
+     initialized to the next multibyte character.
+
+   mbui_advance (iter)
+     advances the iterator by one multibyte character.
+
+   mbui_cur (iter)
+     returns the current multibyte character, of type mbchar_t.  All the
+     macros defined in mbchar.h can be used on it.
+
+   mbui_cur_ptr (iter)
+     return a pointer to the beginning of the current multibyte character.
+
+   mbui_reloc (iter, ptrdiff)
+     relocates iterator when the string is moved by ptrdiff bytes.
+
+   mbui_copy (&destiter, &srciter)
+     copies srciter to destiter.
+
+   Here are the function prototypes of the macros.
+
+   extern void          mbui_init (mbui_iterator_t iter, const char *startptr);
+   extern bool          mbui_avail (mbui_iterator_t iter);
+   extern void          mbui_advance (mbui_iterator_t iter);
+   extern mbchar_t      mbui_cur (mbui_iterator_t iter);
+   extern const char *  mbui_cur_ptr (mbui_iterator_t iter);
+   extern void          mbui_reloc (mbui_iterator_t iter, ptrdiff_t ptrdiff);
+   extern void          mbui_copy (mbui_iterator_t *new, const mbui_iterator_t *old);
+ */
+
+#ifndef _MBUITER_H
+#define _MBUITER_H 1
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+
+#include "mbchar.h"
+#include "strnlen1.h"
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef MBUITER_INLINE
+# define MBUITER_INLINE _GL_INLINE
+#endif
+
+struct mbuiter_multi
+{
+  bool in_shift;        /* true if next byte may not be interpreted as ASCII */
+  mbstate_t state;      /* if in_shift: current shift state */
+  bool next_done;       /* true if mbui_avail has already filled the following */
+  struct mbchar cur;    /* the current character:
+        const char *cur.ptr             pointer to current character
+        The following are only valid after mbui_avail.
+        size_t cur.bytes                number of bytes of current character
+        bool cur.wc_valid               true if wc is a valid wide character
+        wchar_t cur.wc                  if wc_valid: the current character
+        */
+};
+
+MBUITER_INLINE void
+mbuiter_multi_next (struct mbuiter_multi *iter)
+{
+  if (iter->next_done)
+    return;
+  if (iter->in_shift)
+    goto with_shift;
+  /* Handle most ASCII characters quickly, without calling mbrtowc().  */
+  if (is_basic (*iter->cur.ptr))
+    {
+      /* These characters are part of the basic character set.  ISO C 99
+         guarantees that their wide character code is identical to their
+         char code.  */
+      iter->cur.bytes = 1;
+      iter->cur.wc = *iter->cur.ptr;
+      iter->cur.wc_valid = true;
+    }
+  else
+    {
+      assert (mbsinit (&iter->state));
+      iter->in_shift = true;
+    with_shift:
+      iter->cur.bytes = mbrtowc (&iter->cur.wc, iter->cur.ptr,
+                                 strnlen1 (iter->cur.ptr, MB_CUR_MAX),
+                                 &iter->state);
+      if (iter->cur.bytes == (size_t) -1)
+        {
+          /* An invalid multibyte sequence was encountered.  */
+          iter->cur.bytes = 1;
+          iter->cur.wc_valid = false;
+          /* Whether to set iter->in_shift = false and reset iter->state
+             or not is not very important; the string is bogus anyway.  */
+        }
+      else if (iter->cur.bytes == (size_t) -2)
+        {
+          /* An incomplete multibyte character at the end.  */
+          iter->cur.bytes = strlen (iter->cur.ptr);
+          iter->cur.wc_valid = false;
+          /* Whether to set iter->in_shift = false and reset iter->state
+             or not is not important; the string end is reached anyway.  */
+        }
+      else
+        {
+          if (iter->cur.bytes == 0)
+            {
+              /* A null wide character was encountered.  */
+              iter->cur.bytes = 1;
+              assert (*iter->cur.ptr == '\0');
+              assert (iter->cur.wc == 0);
+            }
+          iter->cur.wc_valid = true;
+
+          /* When in the initial state, we can go back treating ASCII
+             characters more quickly.  */
+          if (mbsinit (&iter->state))
+            iter->in_shift = false;
+        }
+    }
+  iter->next_done = true;
+}
+
+MBUITER_INLINE void
+mbuiter_multi_reloc (struct mbuiter_multi *iter, ptrdiff_t ptrdiff)
+{
+  iter->cur.ptr += ptrdiff;
+}
+
+MBUITER_INLINE void
+mbuiter_multi_copy (struct mbuiter_multi *new_iter, const struct mbuiter_multi *old_iter)
+{
+  if ((new_iter->in_shift = old_iter->in_shift))
+    memcpy (&new_iter->state, &old_iter->state, sizeof (mbstate_t));
+  else
+    memset (&new_iter->state, 0, sizeof (mbstate_t));
+  new_iter->next_done = old_iter->next_done;
+  mb_copy (&new_iter->cur, &old_iter->cur);
+}
+
+/* Iteration macros.  */
+typedef struct mbuiter_multi mbui_iterator_t;
+#define mbui_init(iter, startptr) \
+  ((iter).cur.ptr = (startptr), \
+   (iter).in_shift = false, memset (&(iter).state, '\0', sizeof (mbstate_t)), \
+   (iter).next_done = false)
+#define mbui_avail(iter) \
+  (mbuiter_multi_next (&(iter)), !mb_isnul ((iter).cur))
+#define mbui_advance(iter) \
+  ((iter).cur.ptr += (iter).cur.bytes, (iter).next_done = false)
+
+/* Access to the current character.  */
+#define mbui_cur(iter) (iter).cur
+#define mbui_cur_ptr(iter) (iter).cur.ptr
+
+/* Relocation.  */
+#define mbui_reloc(iter, ptrdiff) mbuiter_multi_reloc (&iter, ptrdiff)
+
+/* Copying an iterator.  */
+#define mbui_copy mbuiter_multi_copy
+
+_GL_INLINE_HEADER_END
+
+#endif /* _MBUITER_H */
diff --git a/src/grep/lib/memchr.c b/src/grep/lib/memchr.c
new file mode 100644
index 0000000..56fd59d
--- /dev/null
+++ b/src/grep/lib/memchr.c
@@ -0,0 +1,172 @@
+/* Copyright (C) 1991, 1993, 1996-1997, 1999-2000, 2003-2004, 2006, 2008-2021
+   Free Software Foundation, Inc.
+
+   Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
+   with help from Dan Sahlin (dan@sics.se) and
+   commentary by Jim Blandy (jimb@ai.mit.edu);
+   adaptation to memchr suggested by Dick Karpinski (dick@cca.ucsf.edu),
+   and implemented by Roland McGrath (roland@ai.mit.edu).
+
+   NOTE: The canonical source of this file is maintained with the GNU C Library.
+   Bugs can be reported to bug-glibc@prep.ai.mit.edu.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <config.h>
+#endif
+
+#include <string.h>
+
+#include <stddef.h>
+
+#if defined _LIBC
+# include <memcopy.h>
+#else
+# define reg_char char
+#endif
+
+#include <limits.h>
+
+#if HAVE_BP_SYM_H || defined _LIBC
+# include <bp-sym.h>
+#else
+# define BP_SYM(sym) sym
+#endif
+
+#undef __memchr
+#ifdef _LIBC
+# undef memchr
+#endif
+
+#ifndef weak_alias
+# define __memchr memchr
+#endif
+
+/* Search no more than N bytes of S for C.  */
+void *
+__memchr (void const *s, int c_in, size_t n)
+{
+  /* On 32-bit hardware, choosing longword to be a 32-bit unsigned
+     long instead of a 64-bit uintmax_t tends to give better
+     performance.  On 64-bit hardware, unsigned long is generally 64
+     bits already.  Change this typedef to experiment with
+     performance.  */
+  typedef unsigned long int longword;
+
+  const unsigned char *char_ptr;
+  const longword *longword_ptr;
+  longword repeated_one;
+  longword repeated_c;
+  unsigned reg_char c;
+
+  c = (unsigned char) c_in;
+
+  /* Handle the first few bytes by reading one byte at a time.
+     Do this until CHAR_PTR is aligned on a longword boundary.  */
+  for (char_ptr = (const unsigned char *) s;
+       n > 0 && (size_t) char_ptr % sizeof (longword) != 0;
+       --n, ++char_ptr)
+    if (*char_ptr == c)
+      return (void *) char_ptr;
+
+  longword_ptr = (const longword *) char_ptr;
+
+  /* All these elucidatory comments refer to 4-byte longwords,
+     but the theory applies equally well to any size longwords.  */
+
+  /* Compute auxiliary longword values:
+     repeated_one is a value which has a 1 in every byte.
+     repeated_c has c in every byte.  */
+  repeated_one = 0x01010101;
+  repeated_c = c | (c << 8);
+  repeated_c |= repeated_c << 16;
+  if (0xffffffffU < (longword) -1)
+    {
+      repeated_one |= repeated_one << 31 << 1;
+      repeated_c |= repeated_c << 31 << 1;
+      if (8 < sizeof (longword))
+        {
+          size_t i;
+
+          for (i = 64; i < sizeof (longword) * 8; i *= 2)
+            {
+              repeated_one |= repeated_one << i;
+              repeated_c |= repeated_c << i;
+            }
+        }
+    }
+
+  /* Instead of the traditional loop which tests each byte, we will test a
+     longword at a time.  The tricky part is testing if *any of the four*
+     bytes in the longword in question are equal to c.  We first use an xor
+     with repeated_c.  This reduces the task to testing whether *any of the
+     four* bytes in longword1 is zero.
+
+     We compute tmp =
+       ((longword1 - repeated_one) & ~longword1) & (repeated_one << 7).
+     That is, we perform the following operations:
+       1. Subtract repeated_one.
+       2. & ~longword1.
+       3. & a mask consisting of 0x80 in every byte.
+     Consider what happens in each byte:
+       - If a byte of longword1 is zero, step 1 and 2 transform it into 0xff,
+         and step 3 transforms it into 0x80.  A carry can also be propagated
+         to more significant bytes.
+       - If a byte of longword1 is nonzero, let its lowest 1 bit be at
+         position k (0 <= k <= 7); so the lowest k bits are 0.  After step 1,
+         the byte ends in a single bit of value 0 and k bits of value 1.
+         After step 2, the result is just k bits of value 1: 2^k - 1.  After
+         step 3, the result is 0.  And no carry is produced.
+     So, if longword1 has only non-zero bytes, tmp is zero.
+     Whereas if longword1 has a zero byte, call j the position of the least
+     significant zero byte.  Then the result has a zero at positions 0, ...,
+     j-1 and a 0x80 at position j.  We cannot predict the result at the more
+     significant bytes (positions j+1..3), but it does not matter since we
+     already have a non-zero bit at position 8*j+7.
+
+     So, the test whether any byte in longword1 is zero is equivalent to
+     testing whether tmp is nonzero.  */
+
+  while (n >= sizeof (longword))
+    {
+      longword longword1 = *longword_ptr ^ repeated_c;
+
+      if ((((longword1 - repeated_one) & ~longword1)
+           & (repeated_one << 7)) != 0)
+        break;
+      longword_ptr++;
+      n -= sizeof (longword);
+    }
+
+  char_ptr = (const unsigned char *) longword_ptr;
+
+  /* At this point, we know that either n < sizeof (longword), or one of the
+     sizeof (longword) bytes starting at char_ptr is == c.  On little-endian
+     machines, we could determine the first such byte without any further
+     memory accesses, just by looking at the tmp result from the last loop
+     iteration.  But this does not work on big-endian machines.  Choose code
+     that works in both cases.  */
+
+  for (; n > 0; --n, ++char_ptr)
+    {
+      if (*char_ptr == c)
+        return (void *) char_ptr;
+    }
+
+  return NULL;
+}
+#ifdef weak_alias
+weak_alias (__memchr, BP_SYM (memchr))
+#endif
diff --git a/src/grep/lib/memchr.valgrind b/src/grep/lib/memchr.valgrind
new file mode 100644
index 0000000..4f16481
--- /dev/null
+++ b/src/grep/lib/memchr.valgrind
@@ -0,0 +1,30 @@
+# Suppress a valgrind message about use of uninitialized memory in memchr().
+
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+#
+# This file is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# POSIX states that when the character is found, memchr must not read extra
+# bytes in an overestimated length (for example, where memchr is used to
+# implement strnlen).  However, we use a safe word read to provide a speedup.
+{
+    memchr-value4
+    Memcheck:Value4
+    fun:rpl_memchr
+}
+{
+    memchr-value8
+    Memcheck:Value8
+    fun:rpl_memchr
+}
diff --git a/src/grep/lib/memchr2.c b/src/grep/lib/memchr2.c
new file mode 100644
index 0000000..9466b3e
--- /dev/null
+++ b/src/grep/lib/memchr2.c
@@ -0,0 +1,169 @@
+/* Copyright (C) 1991, 1993, 1996-1997, 1999-2000, 2003-2004, 2006, 2008-2021
+   Free Software Foundation, Inc.
+
+   Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
+   with help from Dan Sahlin (dan@sics.se) and
+   commentary by Jim Blandy (jimb@ai.mit.edu);
+   adaptation to memchr suggested by Dick Karpinski (dick@cca.ucsf.edu),
+   and implemented in glibc by Roland McGrath (roland@ai.mit.edu).
+   Extension to memchr2 implemented by Eric Blake (ebb9@byu.net).
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "memchr2.h"
+
+#include <limits.h>
+#include <stdint.h>
+#include <string.h>
+
+/* Return the first address of either C1 or C2 (treated as unsigned
+   char) that occurs within N bytes of the memory region S.  If
+   neither byte appears, return NULL.  */
+void *
+memchr2 (void const *s, int c1_in, int c2_in, size_t n)
+{
+  /* On 32-bit hardware, choosing longword to be a 32-bit unsigned
+     long instead of a 64-bit uintmax_t tends to give better
+     performance.  On 64-bit hardware, unsigned long is generally 64
+     bits already.  Change this typedef to experiment with
+     performance.  */
+  typedef unsigned long int longword;
+
+  const unsigned char *char_ptr;
+  void const *void_ptr;
+  const longword *longword_ptr;
+  longword repeated_one;
+  longword repeated_c1;
+  longword repeated_c2;
+  unsigned char c1;
+  unsigned char c2;
+
+  c1 = (unsigned char) c1_in;
+  c2 = (unsigned char) c2_in;
+
+  if (c1 == c2)
+    return memchr (s, c1, n);
+
+  /* Handle the first few bytes by reading one byte at a time.
+     Do this until VOID_PTR is aligned on a longword boundary.  */
+  for (void_ptr = s;
+       n > 0 && (uintptr_t) void_ptr % sizeof (longword) != 0;
+       --n)
+    {
+      char_ptr = void_ptr;
+      if (*char_ptr == c1 || *char_ptr == c2)
+        return (void *) void_ptr;
+      void_ptr = char_ptr + 1;
+    }
+
+  longword_ptr = void_ptr;
+
+  /* All these elucidatory comments refer to 4-byte longwords,
+     but the theory applies equally well to any size longwords.  */
+
+  /* Compute auxiliary longword values:
+     repeated_one is a value which has a 1 in every byte.
+     repeated_c1 has c1 in every byte.
+     repeated_c2 has c2 in every byte.  */
+  repeated_one = 0x01010101;
+  repeated_c1 = c1 | (c1 << 8);
+  repeated_c2 = c2 | (c2 << 8);
+  repeated_c1 |= repeated_c1 << 16;
+  repeated_c2 |= repeated_c2 << 16;
+  if (0xffffffffU < (longword) -1)
+    {
+      repeated_one |= repeated_one << 31 << 1;
+      repeated_c1 |= repeated_c1 << 31 << 1;
+      repeated_c2 |= repeated_c2 << 31 << 1;
+      if (8 < sizeof (longword))
+        {
+          size_t i;
+
+          for (i = 64; i < sizeof (longword) * 8; i *= 2)
+            {
+              repeated_one |= repeated_one << i;
+              repeated_c1 |= repeated_c1 << i;
+              repeated_c2 |= repeated_c2 << i;
+            }
+        }
+    }
+
+  /* Instead of the traditional loop which tests each byte, we will test a
+     longword at a time.  The tricky part is testing if *any of the four*
+     bytes in the longword in question are equal to c1 or c2.  We first use
+     an xor with repeated_c1 and repeated_c2, respectively.  This reduces
+     the task to testing whether *any of the four* bytes in longword1 or
+     longword2 is zero.
+
+     Let's consider longword1.  We compute tmp1 =
+       ((longword1 - repeated_one) & ~longword1) & (repeated_one << 7).
+     That is, we perform the following operations:
+       1. Subtract repeated_one.
+       2. & ~longword1.
+       3. & a mask consisting of 0x80 in every byte.
+     Consider what happens in each byte:
+       - If a byte of longword1 is zero, step 1 and 2 transform it into 0xff,
+         and step 3 transforms it into 0x80.  A carry can also be propagated
+         to more significant bytes.
+       - If a byte of longword1 is nonzero, let its lowest 1 bit be at
+         position k (0 <= k <= 7); so the lowest k bits are 0.  After step 1,
+         the byte ends in a single bit of value 0 and k bits of value 1.
+         After step 2, the result is just k bits of value 1: 2^k - 1.  After
+         step 3, the result is 0.  And no carry is produced.
+     So, if longword1 has only non-zero bytes, tmp1 is zero.
+     Whereas if longword1 has a zero byte, call j the position of the least
+     significant zero byte.  Then the result has a zero at positions 0, ...,
+     j-1 and a 0x80 at position j.  We cannot predict the result at the more
+     significant bytes (positions j+1..3), but it does not matter since we
+     already have a non-zero bit at position 8*j+7.
+
+     Similarly, we compute tmp2 =
+       ((longword2 - repeated_one) & ~longword2) & (repeated_one << 7).
+
+     The test whether any byte in longword1 or longword2 is zero is equivalent
+     to testing whether tmp1 is nonzero or tmp2 is nonzero.  We can combine
+     this into a single test, whether (tmp1 | tmp2) is nonzero.  */
+
+  while (n >= sizeof (longword))
+    {
+      longword longword1 = *longword_ptr ^ repeated_c1;
+      longword longword2 = *longword_ptr ^ repeated_c2;
+
+      if (((((longword1 - repeated_one) & ~longword1)
+            | ((longword2 - repeated_one) & ~longword2))
+           & (repeated_one << 7)) != 0)
+        break;
+      longword_ptr++;
+      n -= sizeof (longword);
+    }
+
+  char_ptr = (const unsigned char *) longword_ptr;
+
+  /* At this point, we know that either n < sizeof (longword), or one of the
+     sizeof (longword) bytes starting at char_ptr is == c1 or == c2.  On
+     little-endian machines, we could determine the first such byte without
+     any further memory accesses, just by looking at the (tmp1 | tmp2) result
+     from the last loop iteration.  But this does not work on big-endian
+     machines.  Choose code that works in both cases.  */
+
+  for (; n > 0; --n, ++char_ptr)
+    {
+      if (*char_ptr == c1 || *char_ptr == c2)
+        return (void *) char_ptr;
+    }
+
+  return NULL;
+}
diff --git a/src/grep/lib/memchr2.h b/src/grep/lib/memchr2.h
new file mode 100644
index 0000000..c9ed118
--- /dev/null
+++ b/src/grep/lib/memchr2.h
@@ -0,0 +1,32 @@
+/* Scan memory for the first of two bytes.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Return the first address of either C1 or C2 (treated as unsigned
+   char) that occurs within N bytes of the memory region S.  If
+   neither byte appears, return NULL.  */
+
+extern void *memchr2 (void const *s, int c1, int c2, size_t n)
+  _GL_ATTRIBUTE_PURE;
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/src/grep/lib/memchr2.valgrind b/src/grep/lib/memchr2.valgrind
new file mode 100644
index 0000000..aa095b1
--- /dev/null
+++ b/src/grep/lib/memchr2.valgrind
@@ -0,0 +1,30 @@
+# Suppress a valgrind message about use of uninitialized memory in memchr2().
+
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+#
+# This file is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Like memchr, it is safe to overestimate the length when the terminator
+# is guaranteed to be found.  In this case, we may end up reading a word
+# that is partially uninitialized, but this use is OK for a speedup.
+{
+    memchr2-value4
+    Memcheck:Value4
+    fun:memchr2
+}
+{
+    memchr2-value8
+    Memcheck:Value8
+    fun:memchr2
+}
diff --git a/src/grep/lib/mempcpy.c b/src/grep/lib/mempcpy.c
new file mode 100644
index 0000000..cacacdb
--- /dev/null
+++ b/src/grep/lib/mempcpy.c
@@ -0,0 +1,33 @@
+/* Copy memory area and return pointer after last written byte.
+   Copyright (C) 2003, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <string.h>
+
+/* A function definition is only needed if HAVE_MEMPCPY is not defined.  */
+#if !HAVE_MEMPCPY
+
+/* Copy N bytes of SRC to DEST, return pointer to bytes after the
+   last written byte.  */
+void *
+mempcpy (void *dest, const void *src, size_t n)
+{
+  return (char *) memcpy (dest, src, n) + n;
+}
+
+#endif
diff --git a/src/grep/lib/memrchr.c b/src/grep/lib/memrchr.c
new file mode 100644
index 0000000..e0d47d1
--- /dev/null
+++ b/src/grep/lib/memrchr.c
@@ -0,0 +1,161 @@
+/* memrchr -- find the last occurrence of a byte in a memory block
+
+   Copyright (C) 1991, 1993, 1996-1997, 1999-2000, 2003-2021 Free Software
+   Foundation, Inc.
+
+   Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
+   with help from Dan Sahlin (dan@sics.se) and
+   commentary by Jim Blandy (jimb@ai.mit.edu);
+   adaptation to memchr suggested by Dick Karpinski (dick@cca.ucsf.edu),
+   and implemented by Roland McGrath (roland@ai.mit.edu).
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#if defined _LIBC
+# include <memcopy.h>
+#else
+# include <config.h>
+# define reg_char char
+#endif
+
+#include <string.h>
+#include <limits.h>
+
+#undef __memrchr
+#ifdef _LIBC
+# undef memrchr
+#endif
+
+#ifndef weak_alias
+# define __memrchr memrchr
+#endif
+
+/* Search no more than N bytes of S for C.  */
+void *
+__memrchr (void const *s, int c_in, size_t n)
+{
+  /* On 32-bit hardware, choosing longword to be a 32-bit unsigned
+     long instead of a 64-bit uintmax_t tends to give better
+     performance.  On 64-bit hardware, unsigned long is generally 64
+     bits already.  Change this typedef to experiment with
+     performance.  */
+  typedef unsigned long int longword;
+
+  const unsigned char *char_ptr;
+  const longword *longword_ptr;
+  longword repeated_one;
+  longword repeated_c;
+  unsigned reg_char c;
+
+  c = (unsigned char) c_in;
+
+  /* Handle the last few bytes by reading one byte at a time.
+     Do this until CHAR_PTR is aligned on a longword boundary.  */
+  for (char_ptr = (const unsigned char *) s + n;
+       n > 0 && (size_t) char_ptr % sizeof (longword) != 0;
+       --n)
+    if (*--char_ptr == c)
+      return (void *) char_ptr;
+
+  longword_ptr = (const void *) char_ptr;
+
+  /* All these elucidatory comments refer to 4-byte longwords,
+     but the theory applies equally well to any size longwords.  */
+
+  /* Compute auxiliary longword values:
+     repeated_one is a value which has a 1 in every byte.
+     repeated_c has c in every byte.  */
+  repeated_one = 0x01010101;
+  repeated_c = c | (c << 8);
+  repeated_c |= repeated_c << 16;
+  if (0xffffffffU < (longword) -1)
+    {
+      repeated_one |= repeated_one << 31 << 1;
+      repeated_c |= repeated_c << 31 << 1;
+      if (8 < sizeof (longword))
+        {
+          size_t i;
+
+          for (i = 64; i < sizeof (longword) * 8; i *= 2)
+            {
+              repeated_one |= repeated_one << i;
+              repeated_c |= repeated_c << i;
+            }
+        }
+    }
+
+  /* Instead of the traditional loop which tests each byte, we will test a
+     longword at a time.  The tricky part is testing if *any of the four*
+     bytes in the longword in question are equal to c.  We first use an xor
+     with repeated_c.  This reduces the task to testing whether *any of the
+     four* bytes in longword1 is zero.
+
+     We compute tmp =
+       ((longword1 - repeated_one) & ~longword1) & (repeated_one << 7).
+     That is, we perform the following operations:
+       1. Subtract repeated_one.
+       2. & ~longword1.
+       3. & a mask consisting of 0x80 in every byte.
+     Consider what happens in each byte:
+       - If a byte of longword1 is zero, step 1 and 2 transform it into 0xff,
+         and step 3 transforms it into 0x80.  A carry can also be propagated
+         to more significant bytes.
+       - If a byte of longword1 is nonzero, let its lowest 1 bit be at
+         position k (0 <= k <= 7); so the lowest k bits are 0.  After step 1,
+         the byte ends in a single bit of value 0 and k bits of value 1.
+         After step 2, the result is just k bits of value 1: 2^k - 1.  After
+         step 3, the result is 0.  And no carry is produced.
+     So, if longword1 has only non-zero bytes, tmp is zero.
+     Whereas if longword1 has a zero byte, call j the position of the least
+     significant zero byte.  Then the result has a zero at positions 0, ...,
+     j-1 and a 0x80 at position j.  We cannot predict the result at the more
+     significant bytes (positions j+1..3), but it does not matter since we
+     already have a non-zero bit at position 8*j+7.
+
+     So, the test whether any byte in longword1 is zero is equivalent to
+     testing whether tmp is nonzero.  */
+
+  while (n >= sizeof (longword))
+    {
+      longword longword1 = *--longword_ptr ^ repeated_c;
+
+      if ((((longword1 - repeated_one) & ~longword1)
+           & (repeated_one << 7)) != 0)
+        {
+          longword_ptr++;
+          break;
+        }
+      n -= sizeof (longword);
+    }
+
+  char_ptr = (const unsigned char *) longword_ptr;
+
+  /* At this point, we know that either n < sizeof (longword), or one of the
+     sizeof (longword) bytes starting at char_ptr is == c.  On little-endian
+     machines, we could determine the first such byte without any further
+     memory accesses, just by looking at the tmp result from the last loop
+     iteration.  But this does not work on big-endian machines.  Choose code
+     that works in both cases.  */
+
+  while (n-- > 0)
+    {
+      if (*--char_ptr == c)
+        return (void *) char_ptr;
+    }
+
+  return NULL;
+}
+#ifdef weak_alias
+weak_alias (__memrchr, memrchr)
+#endif
diff --git a/src/grep/lib/minmax.h b/src/grep/lib/minmax.h
new file mode 100644
index 0000000..a03361b
--- /dev/null
+++ b/src/grep/lib/minmax.h
@@ -0,0 +1,60 @@
+/* MIN, MAX macros.
+   Copyright (C) 1995, 1998, 2001, 2003, 2005, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _MINMAX_H
+#define _MINMAX_H
+
+/* Note: MIN, MAX are also defined in <sys/param.h> on some systems
+   (glibc, IRIX, HP-UX, OSF/1).  Therefore you might get warnings about
+   MIN, MAX macro redefinitions on some systems; the workaround is to
+   #include this file as the last one among the #include list.  */
+
+/* Before we define the following symbols we get the <limits.h> file
+   since otherwise we get redefinitions on some systems if <limits.h> is
+   included after this file.  Likewise for <sys/param.h>.
+   If more than one of these system headers define MIN and MAX, pick just
+   one of the headers (because the definitions most likely are the same).  */
+#if HAVE_MINMAX_IN_LIMITS_H
+# include <limits.h>
+#elif HAVE_MINMAX_IN_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+
+/* Note: MIN and MAX should be used with two arguments of the
+   same type.  They might not return the minimum and maximum of their two
+   arguments, if the arguments have different types or have unusual
+   floating-point values.  For example, on a typical host with 32-bit 'int',
+   64-bit 'long long', and 64-bit IEEE 754 'double' types:
+
+     MAX (-1, 2147483648) returns 4294967295.
+     MAX (9007199254740992.0, 9007199254740993) returns 9007199254740992.0.
+     MAX (NaN, 0.0) returns 0.0.
+     MAX (+0.0, -0.0) returns -0.0.
+
+   and in each case the answer is in some sense bogus.  */
+
+/* MAX(a,b) returns the maximum of A and B.  */
+#ifndef MAX
+# define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
+
+/* MIN(a,b) returns the minimum of A and B.  */
+#ifndef MIN
+# define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+#endif /* _MINMAX_H */
diff --git a/src/grep/lib/msvc-inval.c b/src/grep/lib/msvc-inval.c
new file mode 100644
index 0000000..a23dac9
--- /dev/null
+++ b/src/grep/lib/msvc-inval.c
@@ -0,0 +1,129 @@
+/* Invalid parameter handler for MSVC runtime libraries.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "msvc-inval.h"
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
+    && !(MSVC_INVALID_PARAMETER_HANDLING == SANE_LIBRARY_HANDLING)
+
+/* Get _invalid_parameter_handler type and _set_invalid_parameter_handler
+   declaration.  */
+# include <stdlib.h>
+
+# if MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
+
+static void __cdecl
+gl_msvc_invalid_parameter_handler (const wchar_t *expression,
+                                   const wchar_t *function,
+                                   const wchar_t *file,
+                                   unsigned int line,
+                                   uintptr_t dummy)
+{
+}
+
+# else
+
+/* Get declarations of the native Windows API functions.  */
+#  define WIN32_LEAN_AND_MEAN
+#  include <windows.h>
+
+#  if defined _MSC_VER
+
+static void __cdecl
+gl_msvc_invalid_parameter_handler (const wchar_t *expression,
+                                   const wchar_t *function,
+                                   const wchar_t *file,
+                                   unsigned int line,
+                                   uintptr_t dummy)
+{
+  RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
+}
+
+#  else
+
+/* An index to thread-local storage.  */
+static DWORD tls_index;
+static int tls_initialized /* = 0 */;
+
+/* Used as a fallback only.  */
+static struct gl_msvc_inval_per_thread not_per_thread;
+
+struct gl_msvc_inval_per_thread *
+gl_msvc_inval_current (void)
+{
+  if (!tls_initialized)
+    {
+      tls_index = TlsAlloc ();
+      tls_initialized = 1;
+    }
+  if (tls_index == TLS_OUT_OF_INDEXES)
+    /* TlsAlloc had failed.  */
+    return &not_per_thread;
+  else
+    {
+      struct gl_msvc_inval_per_thread *pointer =
+        (struct gl_msvc_inval_per_thread *) TlsGetValue (tls_index);
+      if (pointer == NULL)
+        {
+          /* First call.  Allocate a new 'struct gl_msvc_inval_per_thread'.  */
+          pointer =
+            (struct gl_msvc_inval_per_thread *)
+            malloc (sizeof (struct gl_msvc_inval_per_thread));
+          if (pointer == NULL)
+            /* Could not allocate memory.  Use the global storage.  */
+            pointer = &not_per_thread;
+          TlsSetValue (tls_index, pointer);
+        }
+      return pointer;
+    }
+}
+
+static void __cdecl
+gl_msvc_invalid_parameter_handler (const wchar_t *expression,
+                                   const wchar_t *function,
+                                   const wchar_t *file,
+                                   unsigned int line,
+                                   uintptr_t dummy)
+{
+  struct gl_msvc_inval_per_thread *current = gl_msvc_inval_current ();
+  if (current->restart_valid)
+    longjmp (current->restart, 1);
+  else
+    /* An invalid parameter notification from outside the gnulib code.
+       Give the caller a chance to intervene.  */
+    RaiseException (STATUS_GNULIB_INVALID_PARAMETER, 0, 0, NULL);
+}
+
+#  endif
+
+# endif
+
+static int gl_msvc_inval_initialized /* = 0 */;
+
+void
+gl_msvc_inval_ensure_handler (void)
+{
+  if (gl_msvc_inval_initialized == 0)
+    {
+      _set_invalid_parameter_handler (gl_msvc_invalid_parameter_handler);
+      gl_msvc_inval_initialized = 1;
+    }
+}
+
+#endif
diff --git a/src/grep/lib/msvc-inval.h b/src/grep/lib/msvc-inval.h
new file mode 100644
index 0000000..e115a35
--- /dev/null
+++ b/src/grep/lib/msvc-inval.h
@@ -0,0 +1,222 @@
+/* Invalid parameter handler for MSVC runtime libraries.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _MSVC_INVAL_H
+#define _MSVC_INVAL_H
+
+/* With MSVC runtime libraries with the "invalid parameter handler" concept,
+   functions like fprintf(), dup2(), or close() crash when the caller passes
+   an invalid argument.  But POSIX wants error codes (such as EINVAL or EBADF)
+   instead.
+   This file defines macros that turn such an invalid parameter notification
+   into a non-local exit.  An error code can then be produced at the target
+   of this exit.  You can thus write code like
+
+     TRY_MSVC_INVAL
+       {
+         <Code that can trigger an invalid parameter notification
+          but does not do 'return', 'break', 'continue', nor 'goto'.>
+       }
+     CATCH_MSVC_INVAL
+       {
+         <Code that handles an invalid parameter notification
+          but does not do 'return', 'break', 'continue', nor 'goto'.>
+       }
+     DONE_MSVC_INVAL;
+
+   This entire block expands to a single statement.
+
+   The handling of invalid parameters can be done in three ways:
+
+     * The default way, which is reasonable for programs (not libraries):
+       AC_DEFINE([MSVC_INVALID_PARAMETER_HANDLING], [DEFAULT_HANDLING])
+
+     * The way for libraries that make "hairy" calls (like close(-1), or
+       fclose(fp) where fileno(fp) is closed, or simply getdtablesize()):
+       AC_DEFINE([MSVC_INVALID_PARAMETER_HANDLING], [HAIRY_LIBRARY_HANDLING])
+
+     * The way for libraries that make no "hairy" calls:
+       AC_DEFINE([MSVC_INVALID_PARAMETER_HANDLING], [SANE_LIBRARY_HANDLING])
+ */
+
+#define DEFAULT_HANDLING       0
+#define HAIRY_LIBRARY_HANDLING 1
+#define SANE_LIBRARY_HANDLING  2
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
+    && !(MSVC_INVALID_PARAMETER_HANDLING == SANE_LIBRARY_HANDLING)
+/* A native Windows platform with the "invalid parameter handler" concept,
+   and either DEFAULT_HANDLING or HAIRY_LIBRARY_HANDLING.  */
+
+# if MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
+/* Default handling.  */
+
+#  ifdef __cplusplus
+extern "C" {
+#  endif
+
+/* Ensure that the invalid parameter handler in installed that just returns.
+   Because we assume no other part of the program installs a different
+   invalid parameter handler, this solution is multithread-safe.  */
+extern void gl_msvc_inval_ensure_handler (void);
+
+#  ifdef __cplusplus
+}
+#  endif
+
+#  define TRY_MSVC_INVAL \
+     do                                                                        \
+       {                                                                       \
+         gl_msvc_inval_ensure_handler ();                                      \
+         if (1)
+#  define CATCH_MSVC_INVAL \
+         else
+#  define DONE_MSVC_INVAL \
+       }                                                                       \
+     while (0)
+
+# else
+/* Handling for hairy libraries.  */
+
+#  include <excpt.h>
+
+/* Gnulib can define its own status codes, as described in the page
+   "Raising Software Exceptions" on microsoft.com
+   <https://docs.microsoft.com/en-us/cpp/cpp/raising-software-exceptions>.
+   Our status codes are composed of
+     - 0xE0000000, mandatory for all user-defined status codes,
+     - 0x474E550, a API identifier ("GNU"),
+     - 0, 1, 2, ..., used to distinguish different status codes from the
+       same API.  */
+#  define STATUS_GNULIB_INVALID_PARAMETER (0xE0000000 + 0x474E550 + 0)
+
+#  if defined _MSC_VER
+/* A compiler that supports __try/__except, as described in the page
+   "try-except statement" on microsoft.com
+   <https://docs.microsoft.com/en-us/cpp/cpp/try-except-statement>.
+   With __try/__except, we can use the multithread-safe exception handling.  */
+
+#   ifdef __cplusplus
+extern "C" {
+#   endif
+
+/* Ensure that the invalid parameter handler in installed that raises a
+   software exception with code STATUS_GNULIB_INVALID_PARAMETER.
+   Because we assume no other part of the program installs a different
+   invalid parameter handler, this solution is multithread-safe.  */
+extern void gl_msvc_inval_ensure_handler (void);
+
+#   ifdef __cplusplus
+}
+#   endif
+
+#   define TRY_MSVC_INVAL \
+      do                                                                       \
+        {                                                                      \
+          gl_msvc_inval_ensure_handler ();                                     \
+          __try
+#   define CATCH_MSVC_INVAL \
+          __except (GetExceptionCode () == STATUS_GNULIB_INVALID_PARAMETER     \
+                    ? EXCEPTION_EXECUTE_HANDLER                                \
+                    : EXCEPTION_CONTINUE_SEARCH)
+#   define DONE_MSVC_INVAL \
+        }                                                                      \
+      while (0)
+
+#  else
+/* Any compiler.
+   We can only use setjmp/longjmp.  */
+
+#   include <setjmp.h>
+
+#   ifdef __cplusplus
+extern "C" {
+#   endif
+
+struct gl_msvc_inval_per_thread
+{
+  /* The restart that will resume execution at the code between
+     CATCH_MSVC_INVAL and DONE_MSVC_INVAL.  It is enabled only between
+     TRY_MSVC_INVAL and CATCH_MSVC_INVAL.  */
+  jmp_buf restart;
+
+  /* Tells whether the contents of restart is valid.  */
+  int restart_valid;
+};
+
+/* Ensure that the invalid parameter handler in installed that passes
+   control to the gl_msvc_inval_restart if it is valid, or raises a
+   software exception with code STATUS_GNULIB_INVALID_PARAMETER otherwise.
+   Because we assume no other part of the program installs a different
+   invalid parameter handler, this solution is multithread-safe.  */
+extern void gl_msvc_inval_ensure_handler (void);
+
+/* Return a pointer to the per-thread data for the current thread.  */
+extern struct gl_msvc_inval_per_thread *gl_msvc_inval_current (void);
+
+#   ifdef __cplusplus
+}
+#   endif
+
+#   define TRY_MSVC_INVAL \
+      do                                                                       \
+        {                                                                      \
+          struct gl_msvc_inval_per_thread *msvc_inval_current;                 \
+          gl_msvc_inval_ensure_handler ();                                     \
+          msvc_inval_current = gl_msvc_inval_current ();                       \
+          /* First, initialize gl_msvc_inval_restart.  */                      \
+          if (setjmp (msvc_inval_current->restart) == 0)                       \
+            {                                                                  \
+              /* Then, mark it as valid.  */                                   \
+              msvc_inval_current->restart_valid = 1;
+#   define CATCH_MSVC_INVAL \
+              /* Execution completed.                                          \
+                 Mark gl_msvc_inval_restart as invalid.  */                    \
+              msvc_inval_current->restart_valid = 0;                           \
+            }                                                                  \
+          else                                                                 \
+            {                                                                  \
+              /* Execution triggered an invalid parameter notification.        \
+                 Mark gl_msvc_inval_restart as invalid.  */                    \
+              msvc_inval_current->restart_valid = 0;
+#   define DONE_MSVC_INVAL \
+            }                                                                  \
+        }                                                                      \
+      while (0)
+
+#  endif
+
+# endif
+
+#else
+/* A platform that does not need to the invalid parameter handler,
+   or when SANE_LIBRARY_HANDLING is desired.  */
+
+/* The braces here avoid GCC warnings like
+   "warning: suggest explicit braces to avoid ambiguous 'else'".  */
+# define TRY_MSVC_INVAL \
+    do                                                                         \
+      {                                                                        \
+        if (1)
+# define CATCH_MSVC_INVAL \
+        else
+# define DONE_MSVC_INVAL \
+      }                                                                        \
+    while (0)
+
+#endif
+
+#endif /* _MSVC_INVAL_H */
diff --git a/src/grep/lib/msvc-nothrow.c b/src/grep/lib/msvc-nothrow.c
new file mode 100644
index 0000000..d3c1f54
--- /dev/null
+++ b/src/grep/lib/msvc-nothrow.c
@@ -0,0 +1,51 @@
+/* Wrappers that don't throw invalid parameter notifications
+   with MSVC runtime libraries.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "msvc-nothrow.h"
+
+/* Get declarations of the native Windows API functions.  */
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#undef _get_osfhandle
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+intptr_t
+_gl_nothrow_get_osfhandle (int fd)
+{
+  intptr_t result;
+
+  TRY_MSVC_INVAL
+    {
+      result = _get_osfhandle (fd);
+    }
+  CATCH_MSVC_INVAL
+    {
+      result = (intptr_t) INVALID_HANDLE_VALUE;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+#endif
diff --git a/src/grep/lib/msvc-nothrow.h b/src/grep/lib/msvc-nothrow.h
new file mode 100644
index 0000000..057b5dd
--- /dev/null
+++ b/src/grep/lib/msvc-nothrow.h
@@ -0,0 +1,43 @@
+/* Wrappers that don't throw invalid parameter notifications
+   with MSVC runtime libraries.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _MSVC_NOTHROW_H
+#define _MSVC_NOTHROW_H
+
+/* With MSVC runtime libraries with the "invalid parameter handler" concept,
+   functions like fprintf(), dup2(), or close() crash when the caller passes
+   an invalid argument.  But POSIX wants error codes (such as EINVAL or EBADF)
+   instead.
+   This file defines wrappers that turn such an invalid parameter notification
+   into an error code.  */
+
+#if defined _WIN32 && ! defined __CYGWIN__
+
+/* Get original declaration of _get_osfhandle.  */
+# include <io.h>
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+
+/* Override _get_osfhandle.  */
+extern intptr_t _gl_nothrow_get_osfhandle (int fd);
+#  define _get_osfhandle _gl_nothrow_get_osfhandle
+
+# endif
+
+#endif
+
+#endif /* _MSVC_NOTHROW_H */
diff --git a/src/grep/lib/nl_langinfo-lock.c b/src/grep/lib/nl_langinfo-lock.c
new file mode 100644
index 0000000..fcdf56d
--- /dev/null
+++ b/src/grep/lib/nl_langinfo-lock.c
@@ -0,0 +1,150 @@
+/* Return the internal lock used by nl_langinfo.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019-2020.  */
+
+#include <config.h>
+
+/* When it is known that the gl_get_nl_langinfo_lock function is defined
+   by a dependency library, it should not be defined here.  */
+#if OMIT_NL_LANGINFO_LOCK
+
+/* This declaration is solely to ensure that after preprocessing
+   this file is never empty.  */
+typedef int dummy;
+
+#else
+
+/* This file defines the internal lock used by nl_langinfo.
+   It is a separate compilation unit, so that only one copy of it is
+   present when linking statically.  */
+
+/* Prohibit renaming this symbol.  */
+# undef gl_get_nl_langinfo_lock
+
+/* Macro for exporting a symbol (function, not variable) defined in this file,
+   when compiled into a shared library.  */
+# ifndef DLL_EXPORTED
+#  if HAVE_VISIBILITY
+  /* Override the effect of the compiler option '-fvisibility=hidden'.  */
+#   define DLL_EXPORTED __attribute__((__visibility__("default")))
+#  elif defined _WIN32 || defined __CYGWIN__
+#   define DLL_EXPORTED __declspec(dllexport)
+#  else
+#   define DLL_EXPORTED
+#  endif
+# endif
+
+# if defined _WIN32 && !defined __CYGWIN__
+
+#  define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#  include <windows.h>
+
+#  include "windows-initguard.h"
+
+/* The return type is a 'CRITICAL_SECTION *', not a 'glwthread_mutex_t *',
+   because the latter is not guaranteed to be a stable ABI in the future.  */
+
+/* Make sure the function gets exported from DLLs.  */
+DLL_EXPORTED CRITICAL_SECTION *gl_get_nl_langinfo_lock (void);
+
+static glwthread_initguard_t guard = GLWTHREAD_INITGUARD_INIT;
+static CRITICAL_SECTION lock;
+
+/* Returns the internal lock used by nl_langinfo.  */
+CRITICAL_SECTION *
+gl_get_nl_langinfo_lock (void)
+{
+  if (!guard.done)
+    {
+      if (InterlockedIncrement (&guard.started) == 0)
+        {
+          /* This thread is the first one to need the lock.  Initialize it.  */
+          InitializeCriticalSection (&lock);
+          guard.done = 1;
+        }
+      else
+        {
+          /* Don't let guard.started grow and wrap around.  */
+          InterlockedDecrement (&guard.started);
+          /* Yield the CPU while waiting for another thread to finish
+             initializing this mutex.  */
+          while (!guard.done)
+            Sleep (0);
+        }
+    }
+  return &lock;
+}
+
+# elif HAVE_PTHREAD_API
+
+#  include <pthread.h>
+
+static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+
+/* Make sure the function gets exported from shared libraries.  */
+DLL_EXPORTED pthread_mutex_t *gl_get_nl_langinfo_lock (void);
+
+/* Returns the internal lock used by nl_langinfo.  */
+pthread_mutex_t *
+gl_get_nl_langinfo_lock (void)
+{
+  return &mutex;
+}
+
+# elif HAVE_THREADS_H
+
+#  include <threads.h>
+#  include <stdlib.h>
+
+static int volatile init_needed = 1;
+static once_flag init_once = ONCE_FLAG_INIT;
+static mtx_t mutex;
+
+static void
+atomic_init (void)
+{
+  if (mtx_init (&mutex, mtx_plain) != thrd_success)
+    abort ();
+  init_needed = 0;
+}
+
+/* Make sure the function gets exported from shared libraries.  */
+DLL_EXPORTED mtx_t *gl_get_nl_langinfo_lock (void);
+
+/* Returns the internal lock used by nl_langinfo.  */
+mtx_t *
+gl_get_nl_langinfo_lock (void)
+{
+  if (init_needed)
+    call_once (&init_once, atomic_init);
+  return &mutex;
+}
+
+# endif
+
+# if (defined _WIN32 || defined __CYGWIN__) && !defined _MSC_VER
+/* Make sure the '__declspec(dllimport)' in nl_langinfo.c does not cause
+   a link failure when no DLLs are involved.  */
+#  if defined _WIN64 || defined _LP64
+#   define IMP(x) __imp_##x
+#  else
+#   define IMP(x) _imp__##x
+#  endif
+void * IMP(gl_get_nl_langinfo_lock) = &gl_get_nl_langinfo_lock;
+# endif
+
+#endif
diff --git a/src/grep/lib/nl_langinfo.c b/src/grep/lib/nl_langinfo.c
new file mode 100644
index 0000000..b481f20
--- /dev/null
+++ b/src/grep/lib/nl_langinfo.c
@@ -0,0 +1,572 @@
+/* nl_langinfo() replacement: query locale dependent information.
+
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <langinfo.h>
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#if defined _WIN32 && ! defined __CYGWIN__
+# define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+# include <windows.h>
+# include <stdio.h>
+#endif
+
+#if REPLACE_NL_LANGINFO && !NL_LANGINFO_MTSAFE
+# if defined _WIN32 && !defined __CYGWIN__
+
+#  define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#  include <windows.h>
+
+# elif HAVE_PTHREAD_API
+
+#  include <pthread.h>
+#  if HAVE_THREADS_H && HAVE_WEAK_SYMBOLS
+#   include <threads.h>
+#   pragma weak thrd_exit
+#   define c11_threads_in_use() (thrd_exit != NULL)
+#  else
+#   define c11_threads_in_use() 0
+#  endif
+
+# elif HAVE_THREADS_H
+
+#  include <threads.h>
+
+# endif
+#endif
+
+/* nl_langinfo() must be multithread-safe.  To achieve this without using
+   thread-local storage:
+     1. We use a specific static buffer for each possible argument.
+        So that different threads can call nl_langinfo with different arguments,
+        without interfering.
+     2. We use a simple strcpy or memcpy to fill this static buffer.  Filling it
+        through, for example, strcpy + strcat would not be guaranteed to leave
+        the buffer's contents intact if another thread is currently accessing
+        it.  If necessary, the contents is first assembled in a stack-allocated
+        buffer.  */
+
+#if !REPLACE_NL_LANGINFO || GNULIB_defined_CODESET
+/* Return the codeset of the current locale, if this is easily deducible.
+   Otherwise, return "".  */
+static char *
+ctype_codeset (void)
+{
+  static char result[2 + 10 + 1];
+  char buf[2 + 10 + 1];
+  char locale[SETLOCALE_NULL_MAX];
+  char *codeset;
+  size_t codesetlen;
+
+  if (setlocale_null_r (LC_CTYPE, locale, sizeof (locale)))
+    locale[0] = '\0';
+
+  codeset = buf;
+  codeset[0] = '\0';
+
+  if (locale[0])
+    {
+      /* If the locale name contains an encoding after the dot, return it.  */
+      char *dot = strchr (locale, '.');
+
+      if (dot)
+        {
+          /* Look for the possible @... trailer and remove it, if any.  */
+          char *codeset_start = dot + 1;
+          char const *modifier = strchr (codeset_start, '@');
+
+          if (! modifier)
+            codeset = codeset_start;
+          else
+            {
+              codesetlen = modifier - codeset_start;
+              if (codesetlen < sizeof buf)
+                {
+                  codeset = memcpy (buf, codeset_start, codesetlen);
+                  codeset[codesetlen] = '\0';
+                }
+            }
+        }
+    }
+
+# if defined _WIN32 && ! defined __CYGWIN__
+  /* If setlocale is successful, it returns the number of the
+     codepage, as a string.  Otherwise, fall back on Windows API
+     GetACP, which returns the locale's codepage as a number (although
+     this doesn't change according to what the 'setlocale' call specified).
+     Either way, prepend "CP" to make it a valid codeset name.  */
+  codesetlen = strlen (codeset);
+  if (0 < codesetlen && codesetlen < sizeof buf - 2)
+    memmove (buf + 2, codeset, codesetlen + 1);
+  else
+    sprintf (buf + 2, "%u", GetACP ());
+  /* For a locale name such as "French_France.65001", in Windows 10,
+     setlocale now returns "French_France.utf8" instead.  */
+  if (strcmp (buf + 2, "65001") == 0 || strcmp (buf + 2, "utf8") == 0)
+    return (char *) "UTF-8";
+  else
+    {
+      memcpy (buf, "CP", 2);
+      strcpy (result, buf);
+      return result;
+    }
+# else
+  strcpy (result, codeset);
+  return result;
+#endif
+}
+#endif
+
+
+#if REPLACE_NL_LANGINFO
+
+/* Override nl_langinfo with support for added nl_item values.  */
+
+# undef nl_langinfo
+
+/* Without locking, on Solaris 11.3, test-nl_langinfo-mt fails, with message
+   "thread5 disturbed by threadN!", even when threadN invokes only
+      nl_langinfo (CODESET);
+      nl_langinfo (CRNCYSTR);
+   Similarly on Solaris 10.  */
+
+# if !NL_LANGINFO_MTSAFE /* Solaris */
+
+#  define ITEMS (MAXSTRMSG + 1)
+#  define MAX_RESULT_LEN 80
+
+static char *
+nl_langinfo_unlocked (nl_item item)
+{
+  static char result[ITEMS][MAX_RESULT_LEN];
+
+  /* The result of nl_langinfo is in storage that can be overwritten by
+     other calls to nl_langinfo.  */
+  char *tmp = nl_langinfo (item);
+  if (item >= 0 && item < ITEMS && tmp != NULL)
+    {
+      size_t tmp_len = strlen (tmp);
+      if (tmp_len < MAX_RESULT_LEN)
+        strcpy (result[item], tmp);
+      else
+        {
+          /* Produce a truncated result.  Oh well...  */
+          result[item][MAX_RESULT_LEN - 1] = '\0';
+          memcpy (result[item], tmp, MAX_RESULT_LEN - 1);
+        }
+      return result[item];
+    }
+  else
+    return tmp;
+}
+
+/* Use a lock, so that no two threads can invoke nl_langinfo_unlocked
+   at the same time.  */
+
+/* Prohibit renaming this symbol.  */
+#  undef gl_get_nl_langinfo_lock
+
+#  if defined _WIN32 && !defined __CYGWIN__
+
+extern __declspec(dllimport) CRITICAL_SECTION *gl_get_nl_langinfo_lock (void);
+
+static char *
+nl_langinfo_with_lock (nl_item item)
+{
+  CRITICAL_SECTION *lock = gl_get_nl_langinfo_lock ();
+  char *ret;
+
+  EnterCriticalSection (lock);
+  ret = nl_langinfo_unlocked (item);
+  LeaveCriticalSection (lock);
+
+  return ret;
+}
+
+#  elif HAVE_PTHREAD_API
+
+extern
+#   if defined _WIN32 || defined __CYGWIN__
+  __declspec(dllimport)
+#   endif
+  pthread_mutex_t *gl_get_nl_langinfo_lock (void);
+
+#   if HAVE_WEAK_SYMBOLS /* musl libc, FreeBSD, NetBSD, OpenBSD, Haiku */
+
+     /* Avoid the need to link with '-lpthread'.  */
+#    pragma weak pthread_mutex_lock
+#    pragma weak pthread_mutex_unlock
+
+     /* Determine whether libpthread is in use.  */
+#    pragma weak pthread_mutexattr_gettype
+     /* See the comments in lock.h.  */
+#    define pthread_in_use() \
+       (pthread_mutexattr_gettype != NULL || c11_threads_in_use ())
+
+#   else
+#    define pthread_in_use() 1
+#   endif
+
+static char *
+nl_langinfo_with_lock (nl_item item)
+{
+  if (pthread_in_use())
+    {
+      pthread_mutex_t *lock = gl_get_nl_langinfo_lock ();
+      char *ret;
+
+      if (pthread_mutex_lock (lock))
+        abort ();
+      ret = nl_langinfo_unlocked (item);
+      if (pthread_mutex_unlock (lock))
+        abort ();
+
+      return ret;
+    }
+  else
+    return nl_langinfo_unlocked (item);
+}
+
+#  elif HAVE_THREADS_H
+
+extern mtx_t *gl_get_nl_langinfo_lock (void);
+
+static char *
+nl_langinfo_with_lock (nl_item item)
+{
+  mtx_t *lock = gl_get_nl_langinfo_lock ();
+  char *ret;
+
+  if (mtx_lock (lock) != thrd_success)
+    abort ();
+  ret = nl_langinfo_unlocked (item);
+  if (mtx_unlock (lock) != thrd_success)
+    abort ();
+
+  return ret;
+}
+
+#  endif
+
+# else
+
+/* On other platforms, no lock is needed.  */
+#  define nl_langinfo_with_lock nl_langinfo
+
+# endif
+
+char *
+rpl_nl_langinfo (nl_item item)
+{
+  switch (item)
+    {
+# if GNULIB_defined_CODESET
+    case CODESET:
+      return ctype_codeset ();
+# endif
+# if GNULIB_defined_T_FMT_AMPM
+    case T_FMT_AMPM:
+      return (char *) "%I:%M:%S %p";
+# endif
+# if GNULIB_defined_ALTMON
+    case ALTMON_1:
+    case ALTMON_2:
+    case ALTMON_3:
+    case ALTMON_4:
+    case ALTMON_5:
+    case ALTMON_6:
+    case ALTMON_7:
+    case ALTMON_8:
+    case ALTMON_9:
+    case ALTMON_10:
+    case ALTMON_11:
+    case ALTMON_12:
+      /* We don't ship the appropriate localizations with gnulib.  Therefore,
+         treat ALTMON_i like MON_i.  */
+      item = item - ALTMON_1 + MON_1;
+      break;
+# endif
+# if GNULIB_defined_ERA
+    case ERA:
+      /* The format is not standardized.  In glibc it is a sequence of strings
+         of the form "direction:offset:start_date:end_date:era_name:era_format"
+         with an empty string at the end.  */
+      return (char *) "";
+    case ERA_D_FMT:
+      /* The %Ex conversion in strftime behaves like %x if the locale does not
+         have an alternative time format.  */
+      item = D_FMT;
+      break;
+    case ERA_D_T_FMT:
+      /* The %Ec conversion in strftime behaves like %c if the locale does not
+         have an alternative time format.  */
+      item = D_T_FMT;
+      break;
+    case ERA_T_FMT:
+      /* The %EX conversion in strftime behaves like %X if the locale does not
+         have an alternative time format.  */
+      item = T_FMT;
+      break;
+    case ALT_DIGITS:
+      /* The format is not standardized.  In glibc it is a sequence of 10
+         strings, appended in memory.  */
+      return (char *) "\0\0\0\0\0\0\0\0\0\0";
+# endif
+# if GNULIB_defined_YESEXPR || !FUNC_NL_LANGINFO_YESEXPR_WORKS
+    case YESEXPR:
+      return (char *) "^[yY]";
+    case NOEXPR:
+      return (char *) "^[nN]";
+# endif
+    default:
+      break;
+    }
+  return nl_langinfo_with_lock (item);
+}
+
+#else
+
+/* Provide nl_langinfo from scratch, either for native MS-Windows, or
+   for old Unix platforms without locales, such as Linux libc5 or
+   BeOS.  */
+
+# include <time.h>
+
+char *
+nl_langinfo (nl_item item)
+{
+  char buf[100];
+  struct tm tmm = { 0 };
+
+  switch (item)
+    {
+    /* nl_langinfo items of the LC_CTYPE category */
+    case CODESET:
+      {
+        char *codeset = ctype_codeset ();
+        if (*codeset)
+          return codeset;
+      }
+# ifdef __BEOS__
+      return (char *) "UTF-8";
+# else
+      return (char *) "ISO-8859-1";
+# endif
+    /* nl_langinfo items of the LC_NUMERIC category */
+    case RADIXCHAR:
+      return localeconv () ->decimal_point;
+    case THOUSEP:
+      return localeconv () ->thousands_sep;
+# ifdef GROUPING
+    case GROUPING:
+      return localeconv () ->grouping;
+# endif
+    /* nl_langinfo items of the LC_TIME category.
+       TODO: Really use the locale.  */
+    case D_T_FMT:
+    case ERA_D_T_FMT:
+      return (char *) "%a %b %e %H:%M:%S %Y";
+    case D_FMT:
+    case ERA_D_FMT:
+      return (char *) "%m/%d/%y";
+    case T_FMT:
+    case ERA_T_FMT:
+      return (char *) "%H:%M:%S";
+    case T_FMT_AMPM:
+      return (char *) "%I:%M:%S %p";
+    case AM_STR:
+      {
+        static char result[80];
+        if (!strftime (buf, sizeof result, "%p", &tmm))
+          return (char *) "AM";
+        strcpy (result, buf);
+        return result;
+      }
+    case PM_STR:
+      {
+        static char result[80];
+        tmm.tm_hour = 12;
+        if (!strftime (buf, sizeof result, "%p", &tmm))
+          return (char *) "PM";
+        strcpy (result, buf);
+        return result;
+      }
+    case DAY_1:
+    case DAY_2:
+    case DAY_3:
+    case DAY_4:
+    case DAY_5:
+    case DAY_6:
+    case DAY_7:
+      {
+        static char result[7][50];
+        static char const days[][sizeof "Wednesday"] = {
+          "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
+          "Friday", "Saturday"
+        };
+        tmm.tm_wday = item - DAY_1;
+        if (!strftime (buf, sizeof result[0], "%A", &tmm))
+          return (char *) days[item - DAY_1];
+        strcpy (result[item - DAY_1], buf);
+        return result[item - DAY_1];
+      }
+    case ABDAY_1:
+    case ABDAY_2:
+    case ABDAY_3:
+    case ABDAY_4:
+    case ABDAY_5:
+    case ABDAY_6:
+    case ABDAY_7:
+      {
+        static char result[7][30];
+        static char const abdays[][sizeof "Sun"] = {
+          "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+        };
+        tmm.tm_wday = item - ABDAY_1;
+        if (!strftime (buf, sizeof result[0], "%a", &tmm))
+          return (char *) abdays[item - ABDAY_1];
+        strcpy (result[item - ABDAY_1], buf);
+        return result[item - ABDAY_1];
+      }
+    {
+      static char const months[][sizeof "September"] = {
+        "January", "February", "March", "April", "May", "June", "July",
+        "September", "October", "November", "December"
+      };
+      case MON_1:
+      case MON_2:
+      case MON_3:
+      case MON_4:
+      case MON_5:
+      case MON_6:
+      case MON_7:
+      case MON_8:
+      case MON_9:
+      case MON_10:
+      case MON_11:
+      case MON_12:
+        {
+          static char result[12][50];
+          tmm.tm_mon = item - MON_1;
+          if (!strftime (buf, sizeof result[0], "%B", &tmm))
+            return (char *) months[item - MON_1];
+          strcpy (result[item - MON_1], buf);
+          return result[item - MON_1];
+        }
+      case ALTMON_1:
+      case ALTMON_2:
+      case ALTMON_3:
+      case ALTMON_4:
+      case ALTMON_5:
+      case ALTMON_6:
+      case ALTMON_7:
+      case ALTMON_8:
+      case ALTMON_9:
+      case ALTMON_10:
+      case ALTMON_11:
+      case ALTMON_12:
+        {
+          static char result[12][50];
+          tmm.tm_mon = item - ALTMON_1;
+          /* The platforms without nl_langinfo() don't support strftime with
+             %OB.  We don't even need to try.  */
+          #if 0
+          if (!strftime (buf, sizeof result[0], "%OB", &tmm))
+          #endif
+            if (!strftime (buf, sizeof result[0], "%B", &tmm))
+              return (char *) months[item - ALTMON_1];
+          strcpy (result[item - ALTMON_1], buf);
+          return result[item - ALTMON_1];
+        }
+    }
+    case ABMON_1:
+    case ABMON_2:
+    case ABMON_3:
+    case ABMON_4:
+    case ABMON_5:
+    case ABMON_6:
+    case ABMON_7:
+    case ABMON_8:
+    case ABMON_9:
+    case ABMON_10:
+    case ABMON_11:
+    case ABMON_12:
+      {
+        static char result[12][30];
+        static char const abmonths[][sizeof "Jan"] = {
+          "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
+          "Sep", "Oct", "Nov", "Dec"
+        };
+        tmm.tm_mon = item - ABMON_1;
+        if (!strftime (buf, sizeof result[0], "%b", &tmm))
+          return (char *) abmonths[item - ABMON_1];
+        strcpy (result[item - ABMON_1], buf);
+        return result[item - ABMON_1];
+      }
+    case ERA:
+      return (char *) "";
+    case ALT_DIGITS:
+      return (char *) "\0\0\0\0\0\0\0\0\0\0";
+    /* nl_langinfo items of the LC_MONETARY category.  */
+    case CRNCYSTR:
+      return localeconv () ->currency_symbol;
+# ifdef INT_CURR_SYMBOL
+    case INT_CURR_SYMBOL:
+      return localeconv () ->int_curr_symbol;
+    case MON_DECIMAL_POINT:
+      return localeconv () ->mon_decimal_point;
+    case MON_THOUSANDS_SEP:
+      return localeconv () ->mon_thousands_sep;
+    case MON_GROUPING:
+      return localeconv () ->mon_grouping;
+    case POSITIVE_SIGN:
+      return localeconv () ->positive_sign;
+    case NEGATIVE_SIGN:
+      return localeconv () ->negative_sign;
+    case FRAC_DIGITS:
+      return & localeconv () ->frac_digits;
+    case INT_FRAC_DIGITS:
+      return & localeconv () ->int_frac_digits;
+    case P_CS_PRECEDES:
+      return & localeconv () ->p_cs_precedes;
+    case N_CS_PRECEDES:
+      return & localeconv () ->n_cs_precedes;
+    case P_SEP_BY_SPACE:
+      return & localeconv () ->p_sep_by_space;
+    case N_SEP_BY_SPACE:
+      return & localeconv () ->n_sep_by_space;
+    case P_SIGN_POSN:
+      return & localeconv () ->p_sign_posn;
+    case N_SIGN_POSN:
+      return & localeconv () ->n_sign_posn;
+# endif
+    /* nl_langinfo items of the LC_MESSAGES category
+       TODO: Really use the locale. */
+    case YESEXPR:
+      return (char *) "^[yY]";
+    case NOEXPR:
+      return (char *) "^[nN]";
+    default:
+      return (char *) "";
+    }
+}
+
+#endif
diff --git a/src/grep/lib/obstack.c b/src/grep/lib/obstack.c
new file mode 100644
index 0000000..3017b58
--- /dev/null
+++ b/src/grep/lib/obstack.c
@@ -0,0 +1,353 @@
+/* obstack.c - subroutines used implicitly by object stack macros
+   Copyright (C) 1988-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+
+#ifdef _LIBC
+# include <obstack.h>
+#else
+# include <config.h>
+# include "obstack.h"
+#endif
+
+/* NOTE BEFORE MODIFYING THIS FILE: _OBSTACK_INTERFACE_VERSION in
+   obstack.h must be incremented whenever callers compiled using an old
+   obstack.h can no longer properly call the functions in this file.  */
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself, and the installed library
+   supports the same library interface we do.  This code is part of the GNU
+   C Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand 'configure --with-gnu-libc' and omit the object
+   files, it is simpler to just do this in the source for each such file.  */
+#if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
+# include <gnu-versions.h>
+# if (_GNU_OBSTACK_INTERFACE_VERSION == _OBSTACK_INTERFACE_VERSION	      \
+      || (_GNU_OBSTACK_INTERFACE_VERSION == 1				      \
+          && _OBSTACK_INTERFACE_VERSION == 2				      \
+          && defined SIZEOF_INT && defined SIZEOF_SIZE_T		      \
+          && SIZEOF_INT == SIZEOF_SIZE_T))
+#  define _OBSTACK_ELIDE_CODE
+# endif
+#endif
+
+#ifndef _OBSTACK_ELIDE_CODE
+/* If GCC, or if an oddball (testing?) host that #defines __alignof__,
+   use the already-supplied __alignof__.  Otherwise, this must be Gnulib
+   (as glibc assumes GCC); defer to Gnulib's alignof_type.  */
+# if !defined __GNUC__ && !defined __alignof__
+#  include <alignof.h>
+#  define __alignof__(type) alignof_type (type)
+# endif
+# include <stdlib.h>
+# include <stdint.h>
+
+# ifndef MAX
+#  define MAX(a,b) ((a) > (b) ? (a) : (b))
+# endif
+
+/* Determine default alignment.  */
+
+/* If malloc were really smart, it would round addresses to DEFAULT_ALIGNMENT.
+   But in fact it might be less smart and round addresses to as much as
+   DEFAULT_ROUNDING.  So we prepare for it to do that.
+
+   DEFAULT_ALIGNMENT cannot be an enum constant; see gnulib's alignof.h.  */
+#define DEFAULT_ALIGNMENT MAX (__alignof__ (long double),		      \
+                               MAX (__alignof__ (uintmax_t),		      \
+                                    __alignof__ (void *)))
+#define DEFAULT_ROUNDING MAX (sizeof (long double),			      \
+                               MAX (sizeof (uintmax_t),			      \
+                                    sizeof (void *)))
+
+/* Call functions with either the traditional malloc/free calling
+   interface, or the mmalloc/mfree interface (that adds an extra first
+   argument), based on the value of use_extra_arg.  */
+
+static void *
+call_chunkfun (struct obstack *h, size_t size)
+{
+  if (h->use_extra_arg)
+    return h->chunkfun.extra (h->extra_arg, size);
+  else
+    return h->chunkfun.plain (size);
+}
+
+static void
+call_freefun (struct obstack *h, void *old_chunk)
+{
+  if (h->use_extra_arg)
+    h->freefun.extra (h->extra_arg, old_chunk);
+  else
+    h->freefun.plain (old_chunk);
+}
+
+
+/* Initialize an obstack H for use.  Specify chunk size SIZE (0 means default).
+   Objects start on multiples of ALIGNMENT (0 means use default).
+
+   Return nonzero if successful, calls obstack_alloc_failed_handler if
+   allocation fails.  */
+
+static int
+_obstack_begin_worker (struct obstack *h,
+                       _OBSTACK_SIZE_T size, _OBSTACK_SIZE_T alignment)
+{
+  struct _obstack_chunk *chunk; /* points to new chunk */
+
+  if (alignment == 0)
+    alignment = DEFAULT_ALIGNMENT;
+  if (size == 0)
+    /* Default size is what GNU malloc can fit in a 4096-byte block.  */
+    {
+      /* 12 is sizeof (mhead) and 4 is EXTRA from GNU malloc.
+         Use the values for range checking, because if range checking is off,
+         the extra bytes won't be missed terribly, but if range checking is on
+         and we used a larger request, a whole extra 4096 bytes would be
+         allocated.
+
+         These number are irrelevant to the new GNU malloc.  I suspect it is
+         less sensitive to the size of the request.  */
+      int extra = ((((12 + DEFAULT_ROUNDING - 1) & ~(DEFAULT_ROUNDING - 1))
+                    + 4 + DEFAULT_ROUNDING - 1)
+                   & ~(DEFAULT_ROUNDING - 1));
+      size = 4096 - extra;
+    }
+
+  h->chunk_size = size;
+  h->alignment_mask = alignment - 1;
+
+  chunk = h->chunk = call_chunkfun (h, h->chunk_size);
+  if (!chunk)
+    (*obstack_alloc_failed_handler) ();
+  h->next_free = h->object_base = __PTR_ALIGN ((char *) chunk, chunk->contents,
+                                               alignment - 1);
+  h->chunk_limit = chunk->limit = (char *) chunk + h->chunk_size;
+  chunk->prev = 0;
+  /* The initial chunk now contains no empty object.  */
+  h->maybe_empty_object = 0;
+  h->alloc_failed = 0;
+  return 1;
+}
+
+int
+_obstack_begin (struct obstack *h,
+                _OBSTACK_SIZE_T size, _OBSTACK_SIZE_T alignment,
+                void *(*chunkfun) (size_t),
+                void (*freefun) (void *))
+{
+  h->chunkfun.plain = chunkfun;
+  h->freefun.plain = freefun;
+  h->use_extra_arg = 0;
+  return _obstack_begin_worker (h, size, alignment);
+}
+
+int
+_obstack_begin_1 (struct obstack *h,
+                  _OBSTACK_SIZE_T size, _OBSTACK_SIZE_T alignment,
+                  void *(*chunkfun) (void *, size_t),
+                  void (*freefun) (void *, void *),
+                  void *arg)
+{
+  h->chunkfun.extra = chunkfun;
+  h->freefun.extra = freefun;
+  h->extra_arg = arg;
+  h->use_extra_arg = 1;
+  return _obstack_begin_worker (h, size, alignment);
+}
+
+/* Allocate a new current chunk for the obstack *H
+   on the assumption that LENGTH bytes need to be added
+   to the current object, or a new object of length LENGTH allocated.
+   Copies any partial object from the end of the old chunk
+   to the beginning of the new one.  */
+
+void
+_obstack_newchunk (struct obstack *h, _OBSTACK_SIZE_T length)
+{
+  struct _obstack_chunk *old_chunk = h->chunk;
+  struct _obstack_chunk *new_chunk = 0;
+  size_t obj_size = h->next_free - h->object_base;
+  char *object_base;
+
+  /* Compute size for new chunk.  */
+  size_t sum1 = obj_size + length;
+  size_t sum2 = sum1 + h->alignment_mask;
+  size_t new_size = sum2 + (obj_size >> 3) + 100;
+  if (new_size < sum2)
+    new_size = sum2;
+  if (new_size < h->chunk_size)
+    new_size = h->chunk_size;
+
+  /* Allocate and initialize the new chunk.  */
+  if (obj_size <= sum1 && sum1 <= sum2)
+    new_chunk = call_chunkfun (h, new_size);
+  if (!new_chunk)
+    (*obstack_alloc_failed_handler)();
+  h->chunk = new_chunk;
+  new_chunk->prev = old_chunk;
+  new_chunk->limit = h->chunk_limit = (char *) new_chunk + new_size;
+
+  /* Compute an aligned object_base in the new chunk */
+  object_base =
+    __PTR_ALIGN ((char *) new_chunk, new_chunk->contents, h->alignment_mask);
+
+  /* Move the existing object to the new chunk.  */
+  memcpy (object_base, h->object_base, obj_size);
+
+  /* If the object just copied was the only data in OLD_CHUNK,
+     free that chunk and remove it from the chain.
+     But not if that chunk might contain an empty object.  */
+  if (!h->maybe_empty_object
+      && (h->object_base
+          == __PTR_ALIGN ((char *) old_chunk, old_chunk->contents,
+                          h->alignment_mask)))
+    {
+      new_chunk->prev = old_chunk->prev;
+      call_freefun (h, old_chunk);
+    }
+
+  h->object_base = object_base;
+  h->next_free = h->object_base + obj_size;
+  /* The new chunk certainly contains no empty object yet.  */
+  h->maybe_empty_object = 0;
+}
+
+/* Return nonzero if object OBJ has been allocated from obstack H.
+   This is here for debugging.
+   If you use it in a program, you are probably losing.  */
+
+/* Suppress -Wmissing-prototypes warning.  We don't want to declare this in
+   obstack.h because it is just for debugging.  */
+int _obstack_allocated_p (struct obstack *h, void *obj) __attribute_pure__;
+
+int
+_obstack_allocated_p (struct obstack *h, void *obj)
+{
+  struct _obstack_chunk *lp;    /* below addr of any objects in this chunk */
+  struct _obstack_chunk *plp;   /* point to previous chunk if any */
+
+  lp = (h)->chunk;
+  /* We use >= rather than > since the object cannot be exactly at
+     the beginning of the chunk but might be an empty object exactly
+     at the end of an adjacent chunk.  */
+  while (lp != 0 && ((void *) lp >= obj || (void *) (lp)->limit < obj))
+    {
+      plp = lp->prev;
+      lp = plp;
+    }
+  return lp != 0;
+}
+
+/* Free objects in obstack H, including OBJ and everything allocate
+   more recently than OBJ.  If OBJ is zero, free everything in H.  */
+
+void
+_obstack_free (struct obstack *h, void *obj)
+{
+  struct _obstack_chunk *lp;    /* below addr of any objects in this chunk */
+  struct _obstack_chunk *plp;   /* point to previous chunk if any */
+
+  lp = h->chunk;
+  /* We use >= because there cannot be an object at the beginning of a chunk.
+     But there can be an empty object at that address
+     at the end of another chunk.  */
+  while (lp != 0 && ((void *) lp >= obj || (void *) (lp)->limit < obj))
+    {
+      plp = lp->prev;
+      call_freefun (h, lp);
+      lp = plp;
+      /* If we switch chunks, we can't tell whether the new current
+         chunk contains an empty object, so assume that it may.  */
+      h->maybe_empty_object = 1;
+    }
+  if (lp)
+    {
+      h->object_base = h->next_free = (char *) (obj);
+      h->chunk_limit = lp->limit;
+      h->chunk = lp;
+    }
+  else if (obj != 0)
+    /* obj is not in any of the chunks! */
+    abort ();
+}
+
+_OBSTACK_SIZE_T
+_obstack_memory_used (struct obstack *h)
+{
+  struct _obstack_chunk *lp;
+  _OBSTACK_SIZE_T nbytes = 0;
+
+  for (lp = h->chunk; lp != 0; lp = lp->prev)
+    {
+      nbytes += lp->limit - (char *) lp;
+    }
+  return nbytes;
+}
+
+# ifndef _OBSTACK_NO_ERROR_HANDLER
+/* Define the error handler.  */
+#  include <stdio.h>
+
+/* Exit value used when 'print_and_abort' is used.  */
+#  ifdef _LIBC
+int obstack_exit_failure = EXIT_FAILURE;
+#  else
+#   include "exitfail.h"
+#   define obstack_exit_failure exit_failure
+#  endif
+
+#  ifdef _LIBC
+#   include <libintl.h>
+#  else
+#   include "gettext.h"
+#  endif
+#  ifndef _
+#   define _(msgid) gettext (msgid)
+#  endif
+
+#  ifdef _LIBC
+#   include <libio/iolibio.h>
+#  endif
+
+static __attribute_noreturn__ void
+print_and_abort (void)
+{
+  /* Don't change any of these strings.  Yes, it would be possible to add
+     the newline to the string and use fputs or so.  But this must not
+     happen because the "memory exhausted" message appears in other places
+     like this and the translation should be reused instead of creating
+     a very similar string which requires a separate translation.  */
+#  ifdef _LIBC
+  (void) __fxprintf (NULL, "%s\n", _("memory exhausted"));
+#  else
+  fprintf (stderr, "%s\n", _("memory exhausted"));
+#  endif
+  exit (obstack_exit_failure);
+}
+
+/* The functions allocating more room by calling 'obstack_chunk_alloc'
+   jump to the handler pointed to by 'obstack_alloc_failed_handler'.
+   This can be set to a user defined function which should either
+   abort gracefully or use longjump - but shouldn't return.  This
+   variable by default points to the internal function
+   'print_and_abort'.  */
+__attribute_noreturn__ void (*obstack_alloc_failed_handler) (void)
+  = print_and_abort;
+# endif /* !_OBSTACK_NO_ERROR_HANDLER */
+#endif /* !_OBSTACK_ELIDE_CODE */
diff --git a/src/grep/lib/obstack.h b/src/grep/lib/obstack.h
new file mode 100644
index 0000000..92aa49f
--- /dev/null
+++ b/src/grep/lib/obstack.h
@@ -0,0 +1,546 @@
+/* obstack.h - object stack macros
+   Copyright (C) 1988-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Summary:
+
+   All the apparent functions defined here are macros. The idea
+   is that you would use these pre-tested macros to solve a
+   very specific set of problems, and they would run fast.
+   Caution: no side-effects in arguments please!! They may be
+   evaluated MANY times!!
+
+   These macros operate a stack of objects.  Each object starts life
+   small, and may grow to maturity.  (Consider building a word syllable
+   by syllable.)  An object can move while it is growing.  Once it has
+   been "finished" it never changes address again.  So the "top of the
+   stack" is typically an immature growing object, while the rest of the
+   stack is of mature, fixed size and fixed address objects.
+
+   These routines grab large chunks of memory, using a function you
+   supply, called 'obstack_chunk_alloc'.  On occasion, they free chunks,
+   by calling 'obstack_chunk_free'.  You must define them and declare
+   them before using any obstack macros.
+
+   Each independent stack is represented by a 'struct obstack'.
+   Each of the obstack macros expects a pointer to such a structure
+   as the first argument.
+
+   One motivation for this package is the problem of growing char strings
+   in symbol tables.  Unless you are "fascist pig with a read-only mind"
+   --Gosper's immortal quote from HAKMEM item 154, out of context--you
+   would not like to put any arbitrary upper limit on the length of your
+   symbols.
+
+   In practice this often means you will build many short symbols and a
+   few long symbols.  At the time you are reading a symbol you don't know
+   how long it is.  One traditional method is to read a symbol into a
+   buffer, realloc()ating the buffer every time you try to read a symbol
+   that is longer than the buffer.  This is beaut, but you still will
+   want to copy the symbol from the buffer to a more permanent
+   symbol-table entry say about half the time.
+
+   With obstacks, you can work differently.  Use one obstack for all symbol
+   names.  As you read a symbol, grow the name in the obstack gradually.
+   When the name is complete, finalize it.  Then, if the symbol exists already,
+   free the newly read name.
+
+   The way we do this is to take a large chunk, allocating memory from
+   low addresses.  When you want to build a symbol in the chunk you just
+   add chars above the current "high water mark" in the chunk.  When you
+   have finished adding chars, because you got to the end of the symbol,
+   you know how long the chars are, and you can create a new object.
+   Mostly the chars will not burst over the highest address of the chunk,
+   because you would typically expect a chunk to be (say) 100 times as
+   long as an average object.
+
+   In case that isn't clear, when we have enough chars to make up
+   the object, THEY ARE ALREADY CONTIGUOUS IN THE CHUNK (guaranteed)
+   so we just point to it where it lies.  No moving of chars is
+   needed and this is the second win: potentially long strings need
+   never be explicitly shuffled. Once an object is formed, it does not
+   change its address during its lifetime.
+
+   When the chars burst over a chunk boundary, we allocate a larger
+   chunk, and then copy the partly formed object from the end of the old
+   chunk to the beginning of the new larger chunk.  We then carry on
+   accreting characters to the end of the object as we normally would.
+
+   A special macro is provided to add a single char at a time to a
+   growing object.  This allows the use of register variables, which
+   break the ordinary 'growth' macro.
+
+   Summary:
+        We allocate large chunks.
+        We carve out one object at a time from the current chunk.
+        Once carved, an object never moves.
+        We are free to append data of any size to the currently
+          growing object.
+        Exactly one object is growing in an obstack at any one time.
+        You can run one obstack per control block.
+        You may have as many control blocks as you dare.
+        Because of the way we do it, you can "unwind" an obstack
+          back to a previous state. (You may remove objects much
+          as you would with a stack.)
+ */
+
+
+/* Don't do the contents of this file more than once.  */
+
+#ifndef _OBSTACK_H
+#define _OBSTACK_H 1
+
+#ifndef _OBSTACK_INTERFACE_VERSION
+# define _OBSTACK_INTERFACE_VERSION 2
+#endif
+
+#include <stddef.h>             /* For size_t and ptrdiff_t.  */
+#include <string.h>             /* For __GNU_LIBRARY__, and memcpy.  */
+
+#if __STDC_VERSION__ < 199901L || defined __HP_cc
+# define __FLEXIBLE_ARRAY_MEMBER 1
+#else
+# define __FLEXIBLE_ARRAY_MEMBER
+#endif
+
+#if _OBSTACK_INTERFACE_VERSION == 1
+/* For binary compatibility with obstack version 1, which used "int"
+   and "long" for these two types.  */
+# define _OBSTACK_SIZE_T unsigned int
+# define _CHUNK_SIZE_T unsigned long
+# define _OBSTACK_CAST(type, expr) ((type) (expr))
+#else
+/* Version 2 with sane types, especially for 64-bit hosts.  */
+# define _OBSTACK_SIZE_T size_t
+# define _CHUNK_SIZE_T size_t
+# define _OBSTACK_CAST(type, expr) (expr)
+#endif
+
+/* If B is the base of an object addressed by P, return the result of
+   aligning P to the next multiple of A + 1.  B and P must be of type
+   char *.  A + 1 must be a power of 2.  */
+
+#define __BPTR_ALIGN(B, P, A) ((B) + (((P) - (B) + (A)) & ~(A)))
+
+/* Similar to __BPTR_ALIGN (B, P, A), except optimize the common case
+   where pointers can be converted to integers, aligned as integers,
+   and converted back again.  If ptrdiff_t is narrower than a
+   pointer (e.g., the AS/400), play it safe and compute the alignment
+   relative to B.  Otherwise, use the faster strategy of computing the
+   alignment relative to 0.  */
+
+#define __PTR_ALIGN(B, P, A)						      \
+  __BPTR_ALIGN (sizeof (ptrdiff_t) < sizeof (void *) ? (B) : (char *) 0,      \
+                P, A)
+
+#ifndef __attribute_pure__
+# define __attribute_pure__ _GL_ATTRIBUTE_PURE
+#endif
+
+/* Not the same as _Noreturn, since it also works with function pointers.  */
+#ifndef __attribute_noreturn__
+# if 2 < __GNUC__ + (8 <= __GNUC_MINOR__) || defined __clang__ || 0x5110 <= __SUNPRO_C
+#  define __attribute_noreturn__ __attribute__ ((__noreturn__))
+# else
+#  define __attribute_noreturn__
+# endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct _obstack_chunk           /* Lives at front of each chunk. */
+{
+  char *limit;                  /* 1 past end of this chunk */
+  struct _obstack_chunk *prev;  /* address of prior chunk or NULL */
+  char contents[__FLEXIBLE_ARRAY_MEMBER]; /* objects begin here */
+};
+
+struct obstack          /* control current object in current chunk */
+{
+  _CHUNK_SIZE_T chunk_size;     /* preferred size to allocate chunks in */
+  struct _obstack_chunk *chunk; /* address of current struct obstack_chunk */
+  char *object_base;            /* address of object we are building */
+  char *next_free;              /* where to add next char to current object */
+  char *chunk_limit;            /* address of char after current chunk */
+  union
+  {
+    _OBSTACK_SIZE_T i;
+    void *p;
+  } temp;                       /* Temporary for some macros.  */
+  _OBSTACK_SIZE_T alignment_mask;  /* Mask of alignment for each object. */
+
+  /* These prototypes vary based on 'use_extra_arg'.  */
+  union
+  {
+    void *(*plain) (size_t);
+    void *(*extra) (void *, size_t);
+  } chunkfun;
+  union
+  {
+    void (*plain) (void *);
+    void (*extra) (void *, void *);
+  } freefun;
+
+  void *extra_arg;              /* first arg for chunk alloc/dealloc funcs */
+  unsigned use_extra_arg : 1;     /* chunk alloc/dealloc funcs take extra arg */
+  unsigned maybe_empty_object : 1; /* There is a possibility that the current
+                                      chunk contains a zero-length object.  This
+                                      prevents freeing the chunk if we allocate
+                                      a bigger chunk to replace it. */
+  unsigned alloc_failed : 1;      /* No longer used, as we now call the failed
+                                     handler on error, but retained for binary
+                                     compatibility.  */
+};
+
+/* Declare the external functions we use; they are in obstack.c.  */
+
+extern void _obstack_newchunk (struct obstack *, _OBSTACK_SIZE_T);
+extern void _obstack_free (struct obstack *, void *);
+extern int _obstack_begin (struct obstack *,
+                           _OBSTACK_SIZE_T, _OBSTACK_SIZE_T,
+                           void *(*) (size_t), void (*) (void *));
+extern int _obstack_begin_1 (struct obstack *,
+                             _OBSTACK_SIZE_T, _OBSTACK_SIZE_T,
+                             void *(*) (void *, size_t),
+                             void (*) (void *, void *), void *);
+extern _OBSTACK_SIZE_T _obstack_memory_used (struct obstack *)
+  __attribute_pure__;
+
+
+/* Error handler called when 'obstack_chunk_alloc' failed to allocate
+   more memory.  This can be set to a user defined function which
+   should either abort gracefully or use longjump - but shouldn't
+   return.  The default action is to print a message and abort.  */
+extern __attribute_noreturn__ void (*obstack_alloc_failed_handler) (void);
+
+/* Exit value used when 'print_and_abort' is used.  */
+extern int obstack_exit_failure;
+
+/* Pointer to beginning of object being allocated or to be allocated next.
+   Note that this might not be the final address of the object
+   because a new chunk might be needed to hold the final size.  */
+
+#define obstack_base(h) ((void *) (h)->object_base)
+
+/* Size for allocating ordinary chunks.  */
+
+#define obstack_chunk_size(h) ((h)->chunk_size)
+
+/* Pointer to next byte not yet allocated in current chunk.  */
+
+#define obstack_next_free(h) ((void *) (h)->next_free)
+
+/* Mask specifying low bits that should be clear in address of an object.  */
+
+#define obstack_alignment_mask(h) ((h)->alignment_mask)
+
+/* To prevent prototype warnings provide complete argument list.  */
+#define obstack_init(h)							      \
+  _obstack_begin ((h), 0, 0,						      \
+                  _OBSTACK_CAST (void *(*) (size_t), obstack_chunk_alloc),    \
+                  _OBSTACK_CAST (void (*) (void *), obstack_chunk_free))
+
+#define obstack_begin(h, size)						      \
+  _obstack_begin ((h), (size), 0,					      \
+                  _OBSTACK_CAST (void *(*) (size_t), obstack_chunk_alloc), \
+                  _OBSTACK_CAST (void (*) (void *), obstack_chunk_free))
+
+#define obstack_specify_allocation(h, size, alignment, chunkfun, freefun)     \
+  _obstack_begin ((h), (size), (alignment),				      \
+                  _OBSTACK_CAST (void *(*) (size_t), chunkfun),		      \
+                  _OBSTACK_CAST (void (*) (void *), freefun))
+
+#define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \
+  _obstack_begin_1 ((h), (size), (alignment),				      \
+                    _OBSTACK_CAST (void *(*) (void *, size_t), chunkfun),     \
+                    _OBSTACK_CAST (void (*) (void *, void *), freefun), arg)
+
+#define obstack_chunkfun(h, newchunkfun)				      \
+  ((void) ((h)->chunkfun.extra = (void *(*) (void *, size_t)) (newchunkfun)))
+
+#define obstack_freefun(h, newfreefun)					      \
+  ((void) ((h)->freefun.extra = (void *(*) (void *, void *)) (newfreefun)))
+
+#define obstack_1grow_fast(h, achar) ((void) (*((h)->next_free)++ = (achar)))
+
+#define obstack_blank_fast(h, n) ((void) ((h)->next_free += (n)))
+
+#define obstack_memory_used(h) _obstack_memory_used (h)
+
+#if defined __GNUC__ || defined __clang__
+# if !(defined __GNUC_MINOR__ && __GNUC__ * 1000 + __GNUC_MINOR__ >= 2008 \
+       || defined __clang__)
+#  define __extension__
+# endif
+
+/* For GNU C, if not -traditional,
+   we can define these macros to compute all args only once
+   without using a global variable.
+   Also, we can avoid using the 'temp' slot, to make faster code.  */
+
+# define obstack_object_size(OBSTACK)					      \
+  __extension__								      \
+    ({ struct obstack const *__o = (OBSTACK);				      \
+       (_OBSTACK_SIZE_T) (__o->next_free - __o->object_base); })
+
+/* The local variable is named __o1 to avoid a shadowed variable
+   warning when invoked from other obstack macros.  */
+# define obstack_room(OBSTACK)						      \
+  __extension__								      \
+    ({ struct obstack const *__o1 = (OBSTACK);				      \
+       (_OBSTACK_SIZE_T) (__o1->chunk_limit - __o1->next_free); })
+
+# define obstack_make_room(OBSTACK, length)				      \
+  __extension__								      \
+    ({ struct obstack *__o = (OBSTACK);					      \
+       _OBSTACK_SIZE_T __len = (length);				      \
+       if (obstack_room (__o) < __len)					      \
+         _obstack_newchunk (__o, __len);				      \
+       (void) 0; })
+
+# define obstack_empty_p(OBSTACK)					      \
+  __extension__								      \
+    ({ struct obstack const *__o = (OBSTACK);				      \
+       (__o->chunk->prev == 0						      \
+        && __o->next_free == __PTR_ALIGN ((char *) __o->chunk,		      \
+                                          __o->chunk->contents,		      \
+                                          __o->alignment_mask)); })
+
+# define obstack_grow(OBSTACK, where, length)				      \
+  __extension__								      \
+    ({ struct obstack *__o = (OBSTACK);					      \
+       _OBSTACK_SIZE_T __len = (length);				      \
+       if (obstack_room (__o) < __len)					      \
+         _obstack_newchunk (__o, __len);				      \
+       memcpy (__o->next_free, where, __len);				      \
+       __o->next_free += __len;						      \
+       (void) 0; })
+
+# define obstack_grow0(OBSTACK, where, length)				      \
+  __extension__								      \
+    ({ struct obstack *__o = (OBSTACK);					      \
+       _OBSTACK_SIZE_T __len = (length);				      \
+       if (obstack_room (__o) < __len + 1)				      \
+         _obstack_newchunk (__o, __len + 1);				      \
+       memcpy (__o->next_free, where, __len);				      \
+       __o->next_free += __len;						      \
+       *(__o->next_free)++ = 0;						      \
+       (void) 0; })
+
+# define obstack_1grow(OBSTACK, datum)					      \
+  __extension__								      \
+    ({ struct obstack *__o = (OBSTACK);					      \
+       if (obstack_room (__o) < 1)					      \
+         _obstack_newchunk (__o, 1);					      \
+       obstack_1grow_fast (__o, datum); })
+
+/* These assume that the obstack alignment is good enough for pointers
+   or ints, and that the data added so far to the current object
+   shares that much alignment.  */
+
+# define obstack_ptr_grow(OBSTACK, datum)				      \
+  __extension__								      \
+    ({ struct obstack *__o = (OBSTACK);					      \
+       if (obstack_room (__o) < sizeof (void *))			      \
+         _obstack_newchunk (__o, sizeof (void *));			      \
+       obstack_ptr_grow_fast (__o, datum); })
+
+# define obstack_int_grow(OBSTACK, datum)				      \
+  __extension__								      \
+    ({ struct obstack *__o = (OBSTACK);					      \
+       if (obstack_room (__o) < sizeof (int))				      \
+         _obstack_newchunk (__o, sizeof (int));				      \
+       obstack_int_grow_fast (__o, datum); })
+
+# define obstack_ptr_grow_fast(OBSTACK, aptr)				      \
+  __extension__								      \
+    ({ struct obstack *__o1 = (OBSTACK);				      \
+       void *__p1 = __o1->next_free;					      \
+       *(const void **) __p1 = (aptr);					      \
+       __o1->next_free += sizeof (const void *);			      \
+       (void) 0; })
+
+# define obstack_int_grow_fast(OBSTACK, aint)				      \
+  __extension__								      \
+    ({ struct obstack *__o1 = (OBSTACK);				      \
+       void *__p1 = __o1->next_free;					      \
+       *(int *) __p1 = (aint);						      \
+       __o1->next_free += sizeof (int);					      \
+       (void) 0; })
+
+# define obstack_blank(OBSTACK, length)					      \
+  __extension__								      \
+    ({ struct obstack *__o = (OBSTACK);					      \
+       _OBSTACK_SIZE_T __len = (length);				      \
+       if (obstack_room (__o) < __len)					      \
+         _obstack_newchunk (__o, __len);				      \
+       obstack_blank_fast (__o, __len); })
+
+# define obstack_alloc(OBSTACK, length)					      \
+  __extension__								      \
+    ({ struct obstack *__h = (OBSTACK);					      \
+       obstack_blank (__h, (length));					      \
+       obstack_finish (__h); })
+
+# define obstack_copy(OBSTACK, where, length)				      \
+  __extension__								      \
+    ({ struct obstack *__h = (OBSTACK);					      \
+       obstack_grow (__h, (where), (length));				      \
+       obstack_finish (__h); })
+
+# define obstack_copy0(OBSTACK, where, length)				      \
+  __extension__								      \
+    ({ struct obstack *__h = (OBSTACK);					      \
+       obstack_grow0 (__h, (where), (length));				      \
+       obstack_finish (__h); })
+
+/* The local variable is named __o1 to avoid a shadowed variable
+   warning when invoked from other obstack macros, typically obstack_free.  */
+# define obstack_finish(OBSTACK)					      \
+  __extension__								      \
+    ({ struct obstack *__o1 = (OBSTACK);				      \
+       void *__value = (void *) __o1->object_base;			      \
+       if (__o1->next_free == __value)					      \
+         __o1->maybe_empty_object = 1;					      \
+       __o1->next_free							      \
+         = __PTR_ALIGN (__o1->object_base, __o1->next_free,		      \
+                        __o1->alignment_mask);				      \
+       if ((size_t) (__o1->next_free - (char *) __o1->chunk)		      \
+           > (size_t) (__o1->chunk_limit - (char *) __o1->chunk))	      \
+         __o1->next_free = __o1->chunk_limit;				      \
+       __o1->object_base = __o1->next_free;				      \
+       __value; })
+
+# define obstack_free(OBSTACK, OBJ)					      \
+  __extension__								      \
+    ({ struct obstack *__o = (OBSTACK);					      \
+       void *__obj = (void *) (OBJ);					      \
+       if (__obj > (void *) __o->chunk && __obj < (void *) __o->chunk_limit)  \
+         __o->next_free = __o->object_base = (char *) __obj;		      \
+       else								      \
+         _obstack_free (__o, __obj); })
+
+#else /* not __GNUC__ */
+
+# define obstack_object_size(h)						      \
+  ((_OBSTACK_SIZE_T) ((h)->next_free - (h)->object_base))
+
+# define obstack_room(h)						      \
+  ((_OBSTACK_SIZE_T) ((h)->chunk_limit - (h)->next_free))
+
+# define obstack_empty_p(h)						      \
+  ((h)->chunk->prev == 0						      \
+   && (h)->next_free == __PTR_ALIGN ((char *) (h)->chunk,		      \
+                                     (h)->chunk->contents,		      \
+                                     (h)->alignment_mask))
+
+/* Note that the call to _obstack_newchunk is enclosed in (..., 0)
+   so that we can avoid having void expressions
+   in the arms of the conditional expression.
+   Casting the third operand to void was tried before,
+   but some compilers won't accept it.  */
+
+# define obstack_make_room(h, length)					      \
+  ((h)->temp.i = (length),						      \
+   ((obstack_room (h) < (h)->temp.i)					      \
+    ? (_obstack_newchunk (h, (h)->temp.i), 0) : 0),			      \
+   (void) 0)
+
+# define obstack_grow(h, where, length)					      \
+  ((h)->temp.i = (length),						      \
+   ((obstack_room (h) < (h)->temp.i)					      \
+   ? (_obstack_newchunk ((h), (h)->temp.i), 0) : 0),			      \
+   memcpy ((h)->next_free, where, (h)->temp.i),				      \
+   (h)->next_free += (h)->temp.i,					      \
+   (void) 0)
+
+# define obstack_grow0(h, where, length)				      \
+  ((h)->temp.i = (length),						      \
+   ((obstack_room (h) < (h)->temp.i + 1)				      \
+   ? (_obstack_newchunk ((h), (h)->temp.i + 1), 0) : 0),		      \
+   memcpy ((h)->next_free, where, (h)->temp.i),				      \
+   (h)->next_free += (h)->temp.i,					      \
+   *((h)->next_free)++ = 0,						      \
+   (void) 0)
+
+# define obstack_1grow(h, datum)					      \
+  (((obstack_room (h) < 1)						      \
+    ? (_obstack_newchunk ((h), 1), 0) : 0),				      \
+   obstack_1grow_fast (h, datum))
+
+# define obstack_ptr_grow(h, datum)					      \
+  (((obstack_room (h) < sizeof (char *))				      \
+    ? (_obstack_newchunk ((h), sizeof (char *)), 0) : 0),		      \
+   obstack_ptr_grow_fast (h, datum))
+
+# define obstack_int_grow(h, datum)					      \
+  (((obstack_room (h) < sizeof (int))					      \
+    ? (_obstack_newchunk ((h), sizeof (int)), 0) : 0),			      \
+   obstack_int_grow_fast (h, datum))
+
+# define obstack_ptr_grow_fast(h, aptr)					      \
+  (((const void **) ((h)->next_free += sizeof (void *)))[-1] = (aptr),	      \
+   (void) 0)
+
+# define obstack_int_grow_fast(h, aint)					      \
+  (((int *) ((h)->next_free += sizeof (int)))[-1] = (aint),		      \
+   (void) 0)
+
+# define obstack_blank(h, length)					      \
+  ((h)->temp.i = (length),						      \
+   ((obstack_room (h) < (h)->temp.i)					      \
+   ? (_obstack_newchunk ((h), (h)->temp.i), 0) : 0),			      \
+   obstack_blank_fast (h, (h)->temp.i))
+
+# define obstack_alloc(h, length)					      \
+  (obstack_blank ((h), (length)), obstack_finish ((h)))
+
+# define obstack_copy(h, where, length)					      \
+  (obstack_grow ((h), (where), (length)), obstack_finish ((h)))
+
+# define obstack_copy0(h, where, length)				      \
+  (obstack_grow0 ((h), (where), (length)), obstack_finish ((h)))
+
+# define obstack_finish(h)						      \
+  (((h)->next_free == (h)->object_base					      \
+    ? (((h)->maybe_empty_object = 1), 0)				      \
+    : 0),								      \
+   (h)->temp.p = (h)->object_base,					      \
+   (h)->next_free							      \
+     = __PTR_ALIGN ((h)->object_base, (h)->next_free,			      \
+                    (h)->alignment_mask),				      \
+   (((size_t) ((h)->next_free - (char *) (h)->chunk)			      \
+     > (size_t) ((h)->chunk_limit - (char *) (h)->chunk))		      \
+   ? ((h)->next_free = (h)->chunk_limit) : 0),				      \
+   (h)->object_base = (h)->next_free,					      \
+   (h)->temp.p)
+
+# define obstack_free(h, obj)						      \
+  ((h)->temp.p = (void *) (obj),					      \
+   (((h)->temp.p > (void *) (h)->chunk					      \
+     && (h)->temp.p < (void *) (h)->chunk_limit)			      \
+    ? (void) ((h)->next_free = (h)->object_base = (char *) (h)->temp.p)       \
+    : _obstack_free ((h), (h)->temp.p)))
+
+#endif /* not __GNUC__ */
+
+#ifdef __cplusplus
+}       /* C++ */
+#endif
+
+#endif /* _OBSTACK_H */
diff --git a/src/grep/lib/open-safer.c b/src/grep/lib/open-safer.c
new file mode 100644
index 0000000..4bde6dd
--- /dev/null
+++ b/src/grep/lib/open-safer.c
@@ -0,0 +1,46 @@
+/* Invoke open, but avoid some glitches.
+
+   Copyright (C) 2005-2006, 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <config.h>
+
+#include "fcntl-safer.h"
+
+#include <fcntl.h>
+#include <stdarg.h>
+#include "unistd-safer.h"
+
+int
+open_safer (char const *file, int flags, ...)
+{
+  mode_t mode = 0;
+
+  if (flags & O_CREAT)
+    {
+      va_list ap;
+      va_start (ap, flags);
+
+      /* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4
+         creates crashing code when 'mode_t' is smaller than 'int'.  */
+      mode = va_arg (ap, PROMOTED_MODE_T);
+
+      va_end (ap);
+    }
+
+  return fd_safer (open (file, flags, mode));
+}
diff --git a/src/grep/lib/open.c b/src/grep/lib/open.c
new file mode 100644
index 0000000..372cda8
--- /dev/null
+++ b/src/grep/lib/open.c
@@ -0,0 +1,209 @@
+/* Open a descriptor to a file.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+/* If the user's config.h happens to include <fcntl.h>, let it include only
+   the system's <fcntl.h> here, so that orig_open doesn't recurse to
+   rpl_open.  */
+#define __need_system_fcntl_h
+#include <config.h>
+
+/* Get the original definition of open.  It might be defined as a macro.  */
+#include <fcntl.h>
+#include <sys/types.h>
+#undef __need_system_fcntl_h
+
+static int
+orig_open (const char *filename, int flags, mode_t mode)
+{
+#if defined _WIN32 && !defined __CYGWIN__
+  return _open (filename, flags, mode);
+#else
+  return open (filename, flags, mode);
+#endif
+}
+
+/* Specification.  */
+/* Write "fcntl.h" here, not <fcntl.h>, otherwise OSF/1 5.1 DTK cc eliminates
+   this include because of the preliminary #include <fcntl.h> above.  */
+#include "fcntl.h"
+
+#include "cloexec.h"
+
+#include <errno.h>
+#include <stdarg.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#ifndef REPLACE_OPEN_DIRECTORY
+# define REPLACE_OPEN_DIRECTORY 0
+#endif
+
+int
+open (const char *filename, int flags, ...)
+{
+  /* 0 = unknown, 1 = yes, -1 = no.  */
+#if GNULIB_defined_O_CLOEXEC
+  int have_cloexec = -1;
+#else
+  static int have_cloexec;
+#endif
+
+  mode_t mode;
+  int fd;
+
+  mode = 0;
+  if (flags & O_CREAT)
+    {
+      va_list arg;
+      va_start (arg, flags);
+
+      /* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4
+         creates crashing code when 'mode_t' is smaller than 'int'.  */
+      mode = va_arg (arg, PROMOTED_MODE_T);
+
+      va_end (arg);
+    }
+
+#if GNULIB_defined_O_NONBLOCK
+  /* The only known platform that lacks O_NONBLOCK is mingw, but it
+     also lacks named pipes and Unix sockets, which are the only two
+     file types that require non-blocking handling in open().
+     Therefore, it is safe to ignore O_NONBLOCK here.  It is handy
+     that mingw also lacks openat(), so that is also covered here.  */
+  flags &= ~O_NONBLOCK;
+#endif
+
+#if defined _WIN32 && ! defined __CYGWIN__
+  if (strcmp (filename, "/dev/null") == 0)
+    filename = "NUL";
+#endif
+
+#if OPEN_TRAILING_SLASH_BUG
+  /* Fail if one of O_CREAT, O_WRONLY, O_RDWR is specified and the filename
+     ends in a slash, as POSIX says such a filename must name a directory
+     <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13>:
+       "A pathname that contains at least one non-<slash> character and that
+        ends with one or more trailing <slash> characters shall not be resolved
+        successfully unless the last pathname component before the trailing
+        <slash> characters names an existing directory"
+     If the named file already exists as a directory, then
+       - if O_CREAT is specified, open() must fail because of the semantics
+         of O_CREAT,
+       - if O_WRONLY or O_RDWR is specified, open() must fail because POSIX
+         <https://pubs.opengroup.org/onlinepubs/9699919799/functions/open.html>
+         says that it fails with errno = EISDIR in this case.
+     If the named file does not exist or does not name a directory, then
+       - if O_CREAT is specified, open() must fail since open() cannot create
+         directories,
+       - if O_WRONLY or O_RDWR is specified, open() must fail because the
+         file does not contain a '.' directory.  */
+  if ((flags & O_CREAT)
+      || (flags & O_ACCMODE) == O_RDWR
+      || (flags & O_ACCMODE) == O_WRONLY)
+    {
+      size_t len = strlen (filename);
+      if (len > 0 && filename[len - 1] == '/')
+        {
+          errno = EISDIR;
+          return -1;
+        }
+    }
+#endif
+
+  fd = orig_open (filename,
+                  flags & ~(have_cloexec < 0 ? O_CLOEXEC : 0), mode);
+
+  if (flags & O_CLOEXEC)
+    {
+      if (! have_cloexec)
+        {
+          if (0 <= fd)
+            have_cloexec = 1;
+          else if (errno == EINVAL)
+            {
+              fd = orig_open (filename, flags & ~O_CLOEXEC, mode);
+              have_cloexec = -1;
+            }
+        }
+      if (have_cloexec < 0 && 0 <= fd)
+        set_cloexec_flag (fd, true);
+    }
+
+
+#if REPLACE_FCHDIR
+  /* Implementing fchdir and fdopendir requires the ability to open a
+     directory file descriptor.  If open doesn't support that (as on
+     mingw), we use a dummy file that behaves the same as directories
+     on Linux (ie. always reports EOF on attempts to read()), and
+     override fstat() in fchdir.c to hide the fact that we have a
+     dummy.  */
+  if (REPLACE_OPEN_DIRECTORY && fd < 0 && errno == EACCES
+      && ((flags & O_ACCMODE) == O_RDONLY
+          || (O_SEARCH != O_RDONLY && (flags & O_ACCMODE) == O_SEARCH)))
+    {
+      struct stat statbuf;
+      if (stat (filename, &statbuf) == 0 && S_ISDIR (statbuf.st_mode))
+        {
+          /* Maximum recursion depth of 1.  */
+          fd = open ("/dev/null", flags, mode);
+          if (0 <= fd)
+            fd = _gl_register_fd (fd, filename);
+        }
+      else
+        errno = EACCES;
+    }
+#endif
+
+#if OPEN_TRAILING_SLASH_BUG
+  /* If the filename ends in a slash and fd does not refer to a directory,
+     then fail.
+     Rationale: POSIX says such a filename must name a directory
+     <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13>:
+       "A pathname that contains at least one non-<slash> character and that
+        ends with one or more trailing <slash> characters shall not be resolved
+        successfully unless the last pathname component before the trailing
+        <slash> characters names an existing directory"
+     If the named file without the slash is not a directory, open() must fail
+     with ENOTDIR.  */
+  if (fd >= 0)
+    {
+      /* We know len is positive, since open did not fail with ENOENT.  */
+      size_t len = strlen (filename);
+      if (filename[len - 1] == '/')
+        {
+          struct stat statbuf;
+
+          if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode))
+            {
+              close (fd);
+              errno = ENOTDIR;
+              return -1;
+            }
+        }
+    }
+#endif
+
+#if REPLACE_FCHDIR
+  if (!REPLACE_OPEN_DIRECTORY && 0 <= fd)
+    fd = _gl_register_fd (fd, filename);
+#endif
+
+  return fd;
+}
diff --git a/src/grep/lib/openat-die.c b/src/grep/lib/openat-die.c
new file mode 100644
index 0000000..f30e210
--- /dev/null
+++ b/src/grep/lib/openat-die.c
@@ -0,0 +1,62 @@
+/* Report a save- or restore-cwd failure in our openat replacement and then exit.
+
+   Copyright (C) 2005-2006, 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "openat.h"
+
+#include <stdlib.h>
+
+#ifndef GNULIB_LIBPOSIX
+# include "error.h"
+#endif
+
+#include "exitfail.h"
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+_Noreturn void
+openat_save_fail (int errnum)
+{
+#ifndef GNULIB_LIBPOSIX
+  error (exit_failure, errnum,
+         _("unable to record current working directory"));
+#endif
+  /* _Noreturn cannot be applied to error, since it returns
+     when its first argument is 0.  To help compilers understand that this
+     function does not return, call abort.  Also, the abort is a
+     safety feature if exit_failure is 0 (which shouldn't happen).  */
+  abort ();
+}
+
+
+/* Exit with an error about failure to restore the working directory
+   during an openat emulation.  The caller must ensure that fd 2 is
+   not a just-opened fd, even when openat_safer is not in use.  */
+
+_Noreturn void
+openat_restore_fail (int errnum)
+{
+#ifndef GNULIB_LIBPOSIX
+  error (exit_failure, errnum,
+         _("failed to return to initial working directory"));
+#endif
+
+  /* As above.  */
+  abort ();
+}
diff --git a/src/grep/lib/openat-priv.h b/src/grep/lib/openat-priv.h
new file mode 100644
index 0000000..5c42d03
--- /dev/null
+++ b/src/grep/lib/openat-priv.h
@@ -0,0 +1,64 @@
+/* Internals for openat-like functions.
+
+   Copyright (C) 2005-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#ifndef _GL_HEADER_OPENAT_PRIV
+#define _GL_HEADER_OPENAT_PRIV
+
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+
+/* Maximum number of bytes that it is safe to allocate as a single
+   array on the stack, and that is known as a compile-time constant.
+   The assumption is that we'll touch the array very quickly, or a
+   temporary very near the array, provoking an out-of-memory trap.  On
+   some operating systems, there is only one guard page for the stack,
+   and a page size can be as small as 4096 bytes.  Subtract 64 in the
+   hope that this will let the compiler touch a nearby temporary and
+   provoke a trap.  */
+#define SAFER_ALLOCA_MAX (4096 - 64)
+
+#define SAFER_ALLOCA(m) ((m) < SAFER_ALLOCA_MAX ? (m) : SAFER_ALLOCA_MAX)
+
+#if defined PATH_MAX
+# define OPENAT_BUFFER_SIZE SAFER_ALLOCA (PATH_MAX)
+#elif defined _XOPEN_PATH_MAX
+# define OPENAT_BUFFER_SIZE SAFER_ALLOCA (_XOPEN_PATH_MAX)
+#else
+# define OPENAT_BUFFER_SIZE SAFER_ALLOCA (1024)
+#endif
+
+char *openat_proc_name (char buf[OPENAT_BUFFER_SIZE], int fd, char const *file);
+
+/* Trying to access a BUILD_PROC_NAME file will fail on systems without
+   /proc support, and even on systems *with* ProcFS support.  Return
+   nonzero if the failure may be legitimate, e.g., because /proc is not
+   readable, or the particular .../fd/N directory is not present.  */
+#define EXPECTED_ERRNO(Errno)                   \
+  ((Errno) == ENOTDIR || (Errno) == ENOENT      \
+   || (Errno) == EPERM || (Errno) == EACCES     \
+   || (Errno) == ENOSYS /* Solaris 8 */         \
+   || (Errno) == EOPNOTSUPP /* FreeBSD */)
+
+/* Wrapper function shared among linkat and renameat.  */
+int at_func2 (int fd1, char const *file1,
+              int fd2, char const *file2,
+              int (*func) (char const *file1, char const *file2));
+
+#endif /* _GL_HEADER_OPENAT_PRIV */
diff --git a/src/grep/lib/openat-proc.c b/src/grep/lib/openat-proc.c
new file mode 100644
index 0000000..4f8be90
--- /dev/null
+++ b/src/grep/lib/openat-proc.c
@@ -0,0 +1,135 @@
+/* Create /proc/self/fd-related names for subfiles of open directories.
+
+   Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <config.h>
+
+#include "openat-priv.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifdef __KLIBC__
+# include <InnoTekLIBC/backend.h>
+#endif
+
+#include "intprops.h"
+
+/* Set BUF to the name of the subfile of the directory identified by
+   FD, where the subfile is named FILE.  If successful, return BUF if
+   the result fits in BUF, dynamically allocated memory otherwise.
+   Return NULL (setting errno) on error.  */
+char *
+openat_proc_name (char buf[OPENAT_BUFFER_SIZE], int fd, char const *file)
+{
+  char *result = buf;
+  int dirlen;
+
+  /* Make sure the caller gets ENOENT when appropriate.  */
+  if (!*file)
+    {
+      buf[0] = '\0';
+      return buf;
+    }
+
+#ifndef __KLIBC__
+# define PROC_SELF_FD_FORMAT "/proc/self/fd/%d/"
+  {
+    enum {
+      PROC_SELF_FD_DIR_SIZE_BOUND
+        = (sizeof PROC_SELF_FD_FORMAT - (sizeof "%d" - 1)
+           + INT_STRLEN_BOUND (int))
+    };
+
+    static int proc_status = 0;
+    if (! proc_status)
+      {
+        /* Set PROC_STATUS to a positive value if /proc/self/fd is
+           reliable, and a negative value otherwise.  Solaris 10
+           /proc/self/fd mishandles "..", and any file name might expand
+           to ".." after symbolic link expansion, so avoid /proc/self/fd
+           if it mishandles "..".  Solaris 10 has openat, but this
+           problem is exhibited on code that built on Solaris 8 and
+           running on Solaris 10.  */
+
+        int proc_self_fd =
+          open ("/proc/self/fd",
+                O_SEARCH | O_DIRECTORY | O_NOCTTY | O_NONBLOCK | O_CLOEXEC);
+        if (proc_self_fd < 0)
+          proc_status = -1;
+        else
+          {
+            /* Detect whether /proc/self/fd/%i/../fd exists, where %i is the
+               number of a file descriptor open on /proc/self/fd.  On Linux,
+               that name resolves to /proc/self/fd, which was opened above.
+               However, on Solaris, it may resolve to /proc/self/fd/fd, which
+               cannot exist, since all names in /proc/self/fd are numeric.  */
+            char dotdot_buf[PROC_SELF_FD_DIR_SIZE_BOUND + sizeof "../fd" - 1];
+            sprintf (dotdot_buf, PROC_SELF_FD_FORMAT "../fd", proc_self_fd);
+            proc_status = access (dotdot_buf, F_OK) ? -1 : 1;
+            close (proc_self_fd);
+          }
+      }
+
+    if (proc_status < 0)
+      return NULL;
+    else
+      {
+        size_t bufsize = PROC_SELF_FD_DIR_SIZE_BOUND + strlen (file);
+        if (OPENAT_BUFFER_SIZE < bufsize)
+          {
+            result = malloc (bufsize);
+            if (! result)
+              return NULL;
+          }
+
+        dirlen = sprintf (result, PROC_SELF_FD_FORMAT, fd);
+      }
+  }
+#else
+  /* OS/2 kLIBC provides a function to retrieve a path from a fd.  */
+  {
+    char dir[_MAX_PATH];
+    size_t bufsize;
+
+    if (__libc_Back_ioFHToPath (fd, dir, sizeof dir))
+      return NULL;
+
+    dirlen = strlen (dir);
+    bufsize = dirlen + 1 + strlen (file) + 1; /* 1 for '/', 1 for null */
+    if (OPENAT_BUFFER_SIZE < bufsize)
+      {
+        result = malloc (bufsize);
+        if (! result)
+          return NULL;
+      }
+
+    strcpy (result, dir);
+    result[dirlen++] = '/';
+  }
+#endif
+
+  strcpy (result + dirlen, file);
+  return result;
+}
diff --git a/src/grep/lib/openat-safer.c b/src/grep/lib/openat-safer.c
new file mode 100644
index 0000000..3dfd5d4
--- /dev/null
+++ b/src/grep/lib/openat-safer.c
@@ -0,0 +1,46 @@
+/* Invoke openat, but avoid some glitches.
+
+   Copyright (C) 2005-2006, 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert for open, ported by Eric Blake for openat.  */
+
+#include <config.h>
+
+#include "fcntl-safer.h"
+
+#include <fcntl.h>
+#include <stdarg.h>
+#include "unistd-safer.h"
+
+int
+openat_safer (int fd, char const *file, int flags, ...)
+{
+  mode_t mode = 0;
+
+  if (flags & O_CREAT)
+    {
+      va_list ap;
+      va_start (ap, flags);
+
+      /* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4
+         creates crashing code when 'mode_t' is smaller than 'int'.  */
+      mode = va_arg (ap, PROMOTED_MODE_T);
+
+      va_end (ap);
+    }
+
+  return fd_safer (openat (fd, file, flags, mode));
+}
diff --git a/src/grep/lib/openat.c b/src/grep/lib/openat.c
new file mode 100644
index 0000000..ac92374
--- /dev/null
+++ b/src/grep/lib/openat.c
@@ -0,0 +1,312 @@
+/* provide a replacement openat function
+   Copyright (C) 2004-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+/* If the user's config.h happens to include <fcntl.h>, let it include only
+   the system's <fcntl.h> here, so that orig_openat doesn't recurse to
+   rpl_openat.  */
+#define __need_system_fcntl_h
+#include <config.h>
+
+/* Get the original definition of open.  It might be defined as a macro.  */
+#include <fcntl.h>
+#include <sys/types.h>
+#undef __need_system_fcntl_h
+
+#if HAVE_OPENAT
+static int
+orig_openat (int fd, char const *filename, int flags, mode_t mode)
+{
+  return openat (fd, filename, flags, mode);
+}
+#endif
+
+/* Write "fcntl.h" here, not <fcntl.h>, otherwise OSF/1 5.1 DTK cc eliminates
+   this include because of the preliminary #include <fcntl.h> above.  */
+#include "fcntl.h"
+
+#include "openat.h"
+
+#include "cloexec.h"
+
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <errno.h>
+
+#if HAVE_OPENAT
+
+/* Like openat, but support O_CLOEXEC and work around Solaris 9 bugs
+   with trailing slash.  */
+int
+rpl_openat (int dfd, char const *filename, int flags, ...)
+{
+  /* 0 = unknown, 1 = yes, -1 = no.  */
+#if GNULIB_defined_O_CLOEXEC
+  int have_cloexec = -1;
+#else
+  static int have_cloexec;
+#endif
+
+  mode_t mode;
+  int fd;
+
+  mode = 0;
+  if (flags & O_CREAT)
+    {
+      va_list arg;
+      va_start (arg, flags);
+
+      /* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4
+         creates crashing code when 'mode_t' is smaller than 'int'.  */
+      mode = va_arg (arg, PROMOTED_MODE_T);
+
+      va_end (arg);
+    }
+
+# if OPEN_TRAILING_SLASH_BUG
+  /* Fail if one of O_CREAT, O_WRONLY, O_RDWR is specified and the filename
+     ends in a slash, as POSIX says such a filename must name a directory
+     <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13>:
+       "A pathname that contains at least one non-<slash> character and that
+        ends with one or more trailing <slash> characters shall not be resolved
+        successfully unless the last pathname component before the trailing
+        <slash> characters names an existing directory"
+     If the named file already exists as a directory, then
+       - if O_CREAT is specified, open() must fail because of the semantics
+         of O_CREAT,
+       - if O_WRONLY or O_RDWR is specified, open() must fail because POSIX
+         <https://pubs.opengroup.org/onlinepubs/9699919799/functions/openat.html>
+         says that it fails with errno = EISDIR in this case.
+     If the named file does not exist or does not name a directory, then
+       - if O_CREAT is specified, open() must fail since open() cannot create
+         directories,
+       - if O_WRONLY or O_RDWR is specified, open() must fail because the
+         file does not contain a '.' directory.  */
+  if ((flags & O_CREAT)
+      || (flags & O_ACCMODE) == O_RDWR
+      || (flags & O_ACCMODE) == O_WRONLY)
+    {
+      size_t len = strlen (filename);
+      if (len > 0 && filename[len - 1] == '/')
+        {
+          errno = EISDIR;
+          return -1;
+        }
+    }
+# endif
+
+  fd = orig_openat (dfd, filename,
+                    flags & ~(have_cloexec < 0 ? O_CLOEXEC : 0), mode);
+
+  if (flags & O_CLOEXEC)
+    {
+      if (! have_cloexec)
+        {
+          if (0 <= fd)
+            have_cloexec = 1;
+          else if (errno == EINVAL)
+            {
+              fd = orig_openat (dfd, filename, flags & ~O_CLOEXEC, mode);
+              have_cloexec = -1;
+            }
+        }
+      if (have_cloexec < 0 && 0 <= fd)
+        set_cloexec_flag (fd, true);
+    }
+
+
+# if OPEN_TRAILING_SLASH_BUG
+  /* If the filename ends in a slash and fd does not refer to a directory,
+     then fail.
+     Rationale: POSIX says such a filename must name a directory
+     <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13>:
+       "A pathname that contains at least one non-<slash> character and that
+        ends with one or more trailing <slash> characters shall not be resolved
+        successfully unless the last pathname component before the trailing
+        <slash> characters names an existing directory"
+     If the named file without the slash is not a directory, open() must fail
+     with ENOTDIR.  */
+  if (fd >= 0)
+    {
+      /* We know len is positive, since open did not fail with ENOENT.  */
+      size_t len = strlen (filename);
+      if (filename[len - 1] == '/')
+        {
+          struct stat statbuf;
+
+          if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode))
+            {
+              close (fd);
+              errno = ENOTDIR;
+              return -1;
+            }
+        }
+    }
+# endif
+
+  return fd;
+}
+
+#else /* !HAVE_OPENAT */
+
+# include "filename.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
+# include "openat-priv.h"
+# include "save-cwd.h"
+
+/* Replacement for Solaris' openat function.
+   <https://www.google.com/search?q=openat+site:docs.oracle.com>
+   First, try to simulate it via open ("/proc/self/fd/FD/FILE").
+   Failing that, simulate it by doing save_cwd/fchdir/open/restore_cwd.
+   If either the save_cwd or the restore_cwd fails (relatively unlikely),
+   then give a diagnostic and exit nonzero.
+   Otherwise, upon failure, set errno and return -1, as openat does.
+   Upon successful completion, return a file descriptor.  */
+int
+openat (int fd, char const *file, int flags, ...)
+{
+  mode_t mode = 0;
+
+  if (flags & O_CREAT)
+    {
+      va_list arg;
+      va_start (arg, flags);
+
+      /* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4
+         creates crashing code when 'mode_t' is smaller than 'int'.  */
+      mode = va_arg (arg, PROMOTED_MODE_T);
+
+      va_end (arg);
+    }
+
+  return openat_permissive (fd, file, flags, mode, NULL);
+}
+
+/* Like openat (FD, FILE, FLAGS, MODE), but if CWD_ERRNO is
+   nonnull, set *CWD_ERRNO to an errno value if unable to save
+   or restore the initial working directory.  This is needed only
+   the first time remove.c's remove_dir opens a command-line
+   directory argument.
+
+   If a previous attempt to restore the current working directory
+   failed, then we must not even try to access a '.'-relative name.
+   It is the caller's responsibility not to call this function
+   in that case.  */
+
+int
+openat_permissive (int fd, char const *file, int flags, mode_t mode,
+                   int *cwd_errno)
+{
+  struct saved_cwd saved_cwd;
+  int saved_errno;
+  int err;
+  bool save_ok;
+
+  if (fd == AT_FDCWD || IS_ABSOLUTE_FILE_NAME (file))
+    return open (file, flags, mode);
+
+  {
+    char buf[OPENAT_BUFFER_SIZE];
+    char *proc_file = openat_proc_name (buf, fd, file);
+    if (proc_file)
+      {
+        int open_result = open (proc_file, flags, mode);
+        int open_errno = errno;
+        if (proc_file != buf)
+          free (proc_file);
+        /* If the syscall succeeds, or if it fails with an unexpected
+           errno value, then return right away.  Otherwise, fall through
+           and resort to using save_cwd/restore_cwd.  */
+        if (0 <= open_result || ! EXPECTED_ERRNO (open_errno))
+          {
+            errno = open_errno;
+            return open_result;
+          }
+      }
+  }
+
+  save_ok = (save_cwd (&saved_cwd) == 0);
+  if (! save_ok)
+    {
+      if (! cwd_errno)
+        openat_save_fail (errno);
+      *cwd_errno = errno;
+    }
+  if (0 <= fd && fd == saved_cwd.desc)
+    {
+      /* If saving the working directory collides with the user's
+         requested fd, then the user's fd must have been closed to
+         begin with.  */
+      free_cwd (&saved_cwd);
+      errno = EBADF;
+      return -1;
+    }
+
+  err = fchdir (fd);
+  saved_errno = errno;
+
+  if (! err)
+    {
+      err = open (file, flags, mode);
+      saved_errno = errno;
+      if (save_ok && restore_cwd (&saved_cwd) != 0)
+        {
+          if (! cwd_errno)
+            {
+              /* Don't write a message to just-created fd 2.  */
+              saved_errno = errno;
+              if (err == STDERR_FILENO)
+                close (err);
+              openat_restore_fail (saved_errno);
+            }
+          *cwd_errno = errno;
+        }
+    }
+
+  free_cwd (&saved_cwd);
+  errno = saved_errno;
+  return err;
+}
+
+/* Return true if our openat implementation must resort to
+   using save_cwd and restore_cwd.  */
+bool
+openat_needs_fchdir (void)
+{
+  bool needs_fchdir = true;
+  int fd = open ("/", O_SEARCH | O_CLOEXEC);
+
+  if (0 <= fd)
+    {
+      char buf[OPENAT_BUFFER_SIZE];
+      char *proc_file = openat_proc_name (buf, fd, ".");
+      if (proc_file)
+        {
+          needs_fchdir = false;
+          if (proc_file != buf)
+            free (proc_file);
+        }
+      close (fd);
+    }
+
+  return needs_fchdir;
+}
+
+#endif /* !HAVE_OPENAT */
diff --git a/src/grep/lib/openat.h b/src/grep/lib/openat.h
new file mode 100644
index 0000000..7098124
--- /dev/null
+++ b/src/grep/lib/openat.h
@@ -0,0 +1,123 @@
+/* provide a replacement openat function
+   Copyright (C) 2004-2006, 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#ifndef _GL_HEADER_OPENAT
+#define _GL_HEADER_OPENAT
+
+#include <fcntl.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdbool.h>
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+
+#if !HAVE_OPENAT
+
+int openat_permissive (int fd, char const *file, int flags, mode_t mode,
+                       int *cwd_errno);
+bool openat_needs_fchdir (void);
+
+#else
+
+# define openat_permissive(Fd, File, Flags, Mode, Cwd_errno) \
+    openat (Fd, File, Flags, Mode)
+# define openat_needs_fchdir() false
+
+#endif
+
+_Noreturn void openat_restore_fail (int);
+_Noreturn void openat_save_fail (int);
+
+/* Using these function names makes application code
+   slightly more readable than it would be with
+   fchownat (..., 0) or fchownat (..., AT_SYMLINK_NOFOLLOW).  */
+
+#if GNULIB_CHOWNAT
+
+# ifndef CHOWNAT_INLINE
+#  define CHOWNAT_INLINE _GL_INLINE
+# endif
+
+CHOWNAT_INLINE int
+chownat (int fd, char const *file, uid_t owner, gid_t group)
+{
+  return fchownat (fd, file, owner, group, 0);
+}
+
+CHOWNAT_INLINE int
+lchownat (int fd, char const *file, uid_t owner, gid_t group)
+{
+  return fchownat (fd, file, owner, group, AT_SYMLINK_NOFOLLOW);
+}
+
+#endif
+
+#if GNULIB_CHMODAT
+
+# ifndef CHMODAT_INLINE
+#  define CHMODAT_INLINE _GL_INLINE
+# endif
+
+CHMODAT_INLINE int
+chmodat (int fd, char const *file, mode_t mode)
+{
+  return fchmodat (fd, file, mode, 0);
+}
+
+CHMODAT_INLINE int
+lchmodat (int fd, char const *file, mode_t mode)
+{
+  return fchmodat (fd, file, mode, AT_SYMLINK_NOFOLLOW);
+}
+
+#endif
+
+#if GNULIB_STATAT
+
+# ifndef STATAT_INLINE
+#  define STATAT_INLINE _GL_INLINE
+# endif
+
+STATAT_INLINE int
+statat (int fd, char const *name, struct stat *st)
+{
+  return fstatat (fd, name, st, 0);
+}
+
+STATAT_INLINE int
+lstatat (int fd, char const *name, struct stat *st)
+{
+  return fstatat (fd, name, st, AT_SYMLINK_NOFOLLOW);
+}
+
+#endif
+
+/* For now, there are no wrappers named laccessat or leuidaccessat,
+   since gnulib doesn't support faccessat(,AT_SYMLINK_NOFOLLOW) and
+   since access rights on symlinks are of limited utility.  Likewise,
+   wrappers are not provided for accessat or euidaccessat, so as to
+   avoid dragging in -lgen on some platforms.  */
+
+_GL_INLINE_HEADER_END
+
+#endif /* _GL_HEADER_OPENAT */
diff --git a/src/grep/lib/opendir.c b/src/grep/lib/opendir.c
new file mode 100644
index 0000000..2b86529
--- /dev/null
+++ b/src/grep/lib/opendir.c
@@ -0,0 +1,179 @@
+/* Start reading the entries of a directory.
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <dirent.h>
+
+#include <errno.h>
+#include <stddef.h>
+
+#if HAVE_OPENDIR
+
+/* Override opendir(), to keep track of the open file descriptors.
+   Needed because there is a function dirfd().  */
+
+#else
+
+# include <stdlib.h>
+
+# include "dirent-private.h"
+# include "filename.h"
+
+#endif
+
+#if REPLACE_FCHDIR
+# include <unistd.h>
+#endif
+
+#ifdef __KLIBC__
+# include <io.h>
+# include <fcntl.h>
+#endif
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Don't assume that UNICODE is not defined.  */
+# undef WIN32_FIND_DATA
+# define WIN32_FIND_DATA WIN32_FIND_DATAA
+# undef GetFullPathName
+# define GetFullPathName GetFullPathNameA
+# undef FindFirstFile
+# define FindFirstFile FindFirstFileA
+#endif
+
+DIR *
+opendir (const char *dir_name)
+{
+#if HAVE_OPENDIR
+# undef opendir
+  DIR *dirp;
+
+  dirp = opendir (dir_name);
+  if (dirp == NULL)
+    return NULL;
+
+# ifdef __KLIBC__
+  {
+    int fd = open (dir_name, O_RDONLY);
+    if (fd == -1 || _gl_register_dirp_fd (fd, dirp))
+      {
+        int saved_errno = errno;
+
+        close (fd);
+        closedir (dirp);
+
+        errno = saved_errno;
+
+        return NULL;
+      }
+  }
+# endif
+#else
+
+  char dir_name_mask[MAX_PATH + 1 + 1 + 1];
+  int status;
+  HANDLE current;
+  WIN32_FIND_DATA entry;
+  struct gl_directory *dirp;
+
+  if (dir_name[0] == '\0')
+    {
+      errno = ENOENT;
+      return NULL;
+    }
+
+  /* Make the dir_name absolute, so that we continue reading the same
+     directory if the current directory changed between this opendir()
+     call and a subsequent rewinddir() call.  */
+  if (!GetFullPathName (dir_name, MAX_PATH, dir_name_mask, NULL))
+    {
+      errno = EINVAL;
+      return NULL;
+    }
+
+  /* Append the mask.
+     "*" and "*.*" appear to be equivalent.  */
+  {
+    char *p;
+
+    p = dir_name_mask + strlen (dir_name_mask);
+    if (p > dir_name_mask && !ISSLASH (p[-1]))
+      *p++ = '\\';
+    *p++ = '*';
+    *p = '\0';
+  }
+
+  /* Start searching the directory.  */
+  status = -1;
+  current = FindFirstFile (dir_name_mask, &entry);
+  if (current == INVALID_HANDLE_VALUE)
+    {
+      switch (GetLastError ())
+        {
+        case ERROR_FILE_NOT_FOUND:
+          status = -2;
+          break;
+        case ERROR_PATH_NOT_FOUND:
+          errno = ENOENT;
+          return NULL;
+        case ERROR_DIRECTORY:
+          errno = ENOTDIR;
+          return NULL;
+        case ERROR_ACCESS_DENIED:
+          errno = EACCES;
+          return NULL;
+        default:
+          errno = EIO;
+          return NULL;
+        }
+    }
+
+  /* Allocate the result.  */
+  dirp =
+    (struct gl_directory *)
+    malloc (offsetof (struct gl_directory, dir_name_mask[0])
+            + strlen (dir_name_mask) + 1);
+  if (dirp == NULL)
+    {
+      if (current != INVALID_HANDLE_VALUE)
+        FindClose (current);
+      errno = ENOMEM;
+      return NULL;
+    }
+  dirp->status = status;
+  dirp->current = current;
+  if (status == -1)
+    memcpy (&dirp->entry, &entry, sizeof (WIN32_FIND_DATA));
+  strcpy (dirp->dir_name_mask, dir_name_mask);
+
+#endif
+
+#if REPLACE_FCHDIR
+  {
+    int fd = dirfd (dirp);
+    if (0 <= fd && _gl_register_fd (fd, dir_name) != fd)
+      {
+        int saved_errno = errno;
+        closedir (dirp);
+        errno = saved_errno;
+        return NULL;
+      }
+  }
+#endif
+
+  return dirp;
+}
diff --git a/src/grep/lib/opendirat.c b/src/grep/lib/opendirat.c
new file mode 100644
index 0000000..116d6dd
--- /dev/null
+++ b/src/grep/lib/opendirat.c
@@ -0,0 +1,54 @@
+/* Open a directory relative to another directory.
+
+   Copyright 2006-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+   Written by Jim Meyering and Paul Eggert.  */
+
+#include <config.h>
+
+#include <opendirat.h>
+
+#include <errno.h>
+#include <fcntl--.h>
+#include <unistd.h>
+
+/* Relative to DIR_FD, open the directory DIR, passing EXTRA_FLAGS to
+   the underlying openat call.  On success, store into *PNEW_FD the
+   underlying file descriptor of the newly opened directory and return
+   the directory stream.  On failure, return NULL and set errno.
+
+   On success, *PNEW_FD is at least 3, so this is a "safer" function.  */
+
+DIR *
+opendirat (int dir_fd, char const *dir, int extra_flags, int *pnew_fd)
+{
+  int open_flags = (O_RDONLY | O_CLOEXEC | O_DIRECTORY | O_NOCTTY
+                    | O_NONBLOCK | extra_flags);
+  int new_fd = openat (dir_fd, dir, open_flags);
+
+  if (new_fd < 0)
+    return NULL;
+  DIR *dirp = fdopendir (new_fd);
+  if (dirp)
+    *pnew_fd = new_fd;
+  else
+    {
+      int fdopendir_errno = errno;
+      close (new_fd);
+      errno = fdopendir_errno;
+    }
+  return dirp;
+}
diff --git a/src/grep/lib/opendirat.h b/src/grep/lib/opendirat.h
new file mode 100644
index 0000000..9765615
--- /dev/null
+++ b/src/grep/lib/opendirat.h
@@ -0,0 +1,21 @@
+/* Open a directory relative to another directory.
+
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License,
+   or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <dirent.h>
+
+DIR *opendirat (int, char const *, int, int *)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (closedir, 1);
diff --git a/src/grep/lib/pathmax.h b/src/grep/lib/pathmax.h
new file mode 100644
index 0000000..716f4a9
--- /dev/null
+++ b/src/grep/lib/pathmax.h
@@ -0,0 +1,83 @@
+/* Define PATH_MAX somehow.  Requires sys/types.h.
+   Copyright (C) 1992, 1999, 2001, 2003, 2005, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _PATHMAX_H
+# define _PATHMAX_H
+
+/* POSIX:2008 defines PATH_MAX to be the maximum number of bytes in a filename,
+   including the terminating NUL byte.
+   <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html>
+   PATH_MAX is not defined on systems which have no limit on filename length,
+   such as GNU/Hurd.
+
+   This file does *not* define PATH_MAX always.  Programs that use this file
+   can handle the GNU/Hurd case in several ways:
+     - Either with a package-wide handling, or with a per-file handling,
+     - Either through a
+         #ifdef PATH_MAX
+       or through a fallback like
+         #ifndef PATH_MAX
+         # define PATH_MAX 8192
+         #endif
+       or through a fallback like
+         #ifndef PATH_MAX
+         # define PATH_MAX pathconf ("/", _PC_PATH_MAX)
+         #endif
+ */
+
+# include <unistd.h>
+
+# include <limits.h>
+
+# ifndef _POSIX_PATH_MAX
+#  define _POSIX_PATH_MAX 256
+# endif
+
+/* Don't include sys/param.h if it already has been.  */
+# if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
+#  include <sys/param.h>
+# endif
+
+# if !defined PATH_MAX && defined MAXPATHLEN
+#  define PATH_MAX MAXPATHLEN
+# endif
+
+# ifdef __hpux
+/* On HP-UX, PATH_MAX designates the maximum number of bytes in a filename,
+   *not* including the terminating NUL byte, and is set to 1023.
+   Additionally, when _XOPEN_SOURCE is defined to 500 or more, PATH_MAX is
+   not defined at all any more.  */
+#  undef PATH_MAX
+#  define PATH_MAX 1024
+# endif
+
+# if defined _WIN32 && ! defined __CYGWIN__
+/* The page "Naming Files, Paths, and Namespaces" on msdn.microsoft.com,
+   section "Maximum Path Length Limitation",
+   <https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#maximum-path-length-limitation>
+   explains that the maximum size of a filename, including the terminating
+   NUL byte, is 260 = 3 + 256 + 1.
+   This is the same value as
+     - FILENAME_MAX in <stdio.h>,
+     - _MAX_PATH in <stdlib.h>,
+     - MAX_PATH in <windef.h>.
+   Undefine the original value, because mingw's <limits.h> gets it wrong.  */
+#  undef PATH_MAX
+#  define PATH_MAX 260
+# endif
+
+#endif /* _PATHMAX_H */
diff --git a/src/grep/lib/pipe-safer.c b/src/grep/lib/pipe-safer.c
new file mode 100644
index 0000000..efa4bd6
--- /dev/null
+++ b/src/grep/lib/pipe-safer.c
@@ -0,0 +1,52 @@
+/* Invoke pipe, but avoid some glitches.
+   Copyright (C) 2005-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "unistd-safer.h"
+
+#include <unistd.h>
+#include <errno.h>
+
+/* Like pipe, but ensure that neither of the file descriptors is
+   STDIN_FILENO, STDOUT_FILENO, or STDERR_FILENO.  Fail with ENOSYS on
+   platforms that lack pipe.  */
+
+int
+pipe_safer (int fd[2])
+{
+  if (pipe (fd) == 0)
+    {
+      int i;
+      for (i = 0; i < 2; i++)
+        {
+          fd[i] = fd_safer (fd[i]);
+          if (fd[i] < 0)
+            {
+              int saved_errno = errno;
+              close (fd[1 - i]);
+              errno = saved_errno;
+              return -1;
+            }
+        }
+
+      return 0;
+    }
+
+  return -1;
+}
diff --git a/src/grep/lib/pipe.c b/src/grep/lib/pipe.c
new file mode 100644
index 0000000..fc978f2
--- /dev/null
+++ b/src/grep/lib/pipe.c
@@ -0,0 +1,50 @@
+/* Create a pipe.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Native Windows API.  */
+
+/* Get _pipe().  */
+# include <io.h>
+
+/* Get _O_BINARY.  */
+# include <fcntl.h>
+
+int
+pipe (int fd[2])
+{
+  /* Mingw changes fd to {-1,-1} on failure, but this violates
+     http://austingroupbugs.net/view.php?id=467 */
+  int tmp[2];
+  int result = _pipe (tmp, 4096, _O_BINARY);
+  if (!result)
+    {
+      fd[0] = tmp[0];
+      fd[1] = tmp[1];
+    }
+  return result;
+}
+
+#else
+
+# error "This platform lacks a pipe function, and Gnulib doesn't provide a replacement. This is a bug in Gnulib."
+
+#endif
diff --git a/src/grep/lib/propername.c b/src/grep/lib/propername.c
new file mode 100644
index 0000000..561566b
--- /dev/null
+++ b/src/grep/lib/propername.c
@@ -0,0 +1,318 @@
+/* Localization of proper names.
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2006.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Without this pragma, gcc 4.7.0 20111124 mistakenly suggests that
+   the proper_name function might be candidate for attribute 'const'  */
+#if (__GNUC__ == 4 && 6 <= __GNUC_MINOR__) || 4 < __GNUC__
+# pragma GCC diagnostic ignored "-Wsuggest-attribute=const"
+#endif
+
+#include <config.h>
+
+/* Specification.  */
+#include "propername.h"
+
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#if HAVE_ICONV
+# include <iconv.h>
+#endif
+
+#include "trim.h"
+#include "mbchar.h"
+#include "mbuiter.h"
+#include "localcharset.h"
+#include "c-strcase.h"
+#include "xstriconv.h"
+#include "xalloc.h"
+#include "gettext.h"
+
+
+/* Tests whether STRING contains trim (SUB), starting and ending at word
+   boundaries.
+   Here, instead of implementing Unicode Standard Annex #29 for determining
+   word boundaries, we assume that trim (SUB) starts and ends with words and
+   only test whether the part before it ends with a non-word and the part
+   after it starts with a non-word.  */
+static bool
+mbsstr_trimmed_wordbounded (const char *string, const char *sub)
+{
+  char *tsub = trim (sub);
+  bool found = false;
+
+  for (; *string != '\0';)
+    {
+      const char *tsub_in_string = mbsstr (string, tsub);
+      if (tsub_in_string == NULL)
+        break;
+      else
+        {
+          if (MB_CUR_MAX > 1)
+            {
+              mbui_iterator_t string_iter;
+              bool word_boundary_before;
+              bool word_boundary_after;
+
+              mbui_init (string_iter, string);
+              word_boundary_before = true;
+              if (mbui_cur_ptr (string_iter) < tsub_in_string)
+                {
+                  mbchar_t last_char_before_tsub;
+                  do
+                    {
+                      if (!mbui_avail (string_iter))
+                        abort ();
+                      last_char_before_tsub = mbui_cur (string_iter);
+                      mbui_advance (string_iter);
+                    }
+                  while (mbui_cur_ptr (string_iter) < tsub_in_string);
+                  if (mb_isalnum (last_char_before_tsub))
+                    word_boundary_before = false;
+                }
+
+              mbui_init (string_iter, tsub_in_string);
+              {
+                mbui_iterator_t tsub_iter;
+
+                for (mbui_init (tsub_iter, tsub);
+                     mbui_avail (tsub_iter);
+                     mbui_advance (tsub_iter))
+                  {
+                    if (!mbui_avail (string_iter))
+                      abort ();
+                    mbui_advance (string_iter);
+                  }
+              }
+              word_boundary_after = true;
+              if (mbui_avail (string_iter))
+                {
+                  mbchar_t first_char_after_tsub = mbui_cur (string_iter);
+                  if (mb_isalnum (first_char_after_tsub))
+                    word_boundary_after = false;
+                }
+
+              if (word_boundary_before && word_boundary_after)
+                {
+                  found = true;
+                  break;
+                }
+
+              mbui_init (string_iter, tsub_in_string);
+              if (!mbui_avail (string_iter))
+                break;
+              string = tsub_in_string + mb_len (mbui_cur (string_iter));
+            }
+          else
+            {
+              bool word_boundary_before;
+              const char *p;
+              bool word_boundary_after;
+
+              word_boundary_before = true;
+              if (string < tsub_in_string)
+                if (isalnum ((unsigned char) tsub_in_string[-1]))
+                  word_boundary_before = false;
+
+              p = tsub_in_string + strlen (tsub);
+              word_boundary_after = true;
+              if (*p != '\0')
+                if (isalnum ((unsigned char) *p))
+                  word_boundary_after = false;
+
+              if (word_boundary_before && word_boundary_after)
+                {
+                  found = true;
+                  break;
+                }
+
+              if (*tsub_in_string == '\0')
+                break;
+              string = tsub_in_string + 1;
+            }
+        }
+    }
+  free (tsub);
+  return found;
+}
+
+/* Return the localization of NAME.  NAME is written in ASCII.  */
+
+const char *
+proper_name (const char *name)
+{
+  /* See whether there is a translation.   */
+  const char *translation = gettext (name);
+
+  if (translation != name)
+    {
+      /* See whether the translation contains the original name.  */
+      if (mbsstr_trimmed_wordbounded (translation, name))
+        return translation;
+      else
+        {
+          /* Return "TRANSLATION (NAME)".  */
+          char *result =
+            XNMALLOC (strlen (translation) + 2 + strlen (name) + 1 + 1, char);
+
+          sprintf (result, "%s (%s)", translation, name);
+          return result;
+        }
+    }
+  else
+    return name;
+}
+
+/* Return the localization of a name whose original writing is not ASCII.
+   NAME_UTF8 is the real name, written in UTF-8 with octal or hexadecimal
+   escape sequences.  NAME_ASCII is a fallback written only with ASCII
+   characters.  */
+
+const char *
+proper_name_utf8 (const char *name_ascii, const char *name_utf8)
+{
+  /* See whether there is a translation.   */
+  const char *translation = gettext (name_ascii);
+
+  /* Try to convert NAME_UTF8 to the locale encoding.  */
+  const char *locale_code = locale_charset ();
+  char *alloc_name_converted = NULL;
+  char *alloc_name_converted_translit = NULL;
+  const char *name_converted = NULL;
+  const char *name_converted_translit = NULL;
+  const char *name;
+
+  if (c_strcasecmp (locale_code, "UTF-8") != 0)
+    {
+#if HAVE_ICONV
+      name_converted = alloc_name_converted =
+        xstr_iconv (name_utf8, "UTF-8", locale_code);
+
+# if (((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) || __GLIBC__ > 2) \
+      && !defined __UCLIBC__) \
+     || _LIBICONV_VERSION >= 0x0105
+      {
+        char *converted_translit;
+
+        size_t len = strlen (locale_code);
+        char *locale_code_translit = XNMALLOC (len + 10 + 1, char);
+        memcpy (locale_code_translit, locale_code, len);
+        memcpy (locale_code_translit + len, "//TRANSLIT", 10 + 1);
+
+        converted_translit =
+          xstr_iconv (name_utf8, "UTF-8", locale_code_translit);
+
+        free (locale_code_translit);
+
+        if (converted_translit != NULL)
+          {
+#  if !_LIBICONV_VERSION
+            /* Don't use the transliteration if it added question marks.
+               glibc's transliteration falls back to question marks; libiconv's
+               transliteration does not.
+               mbschr is equivalent to strchr in this case.  */
+            if (strchr (converted_translit, '?') != NULL)
+              free (converted_translit);
+            else
+#  endif
+              name_converted_translit = alloc_name_converted_translit =
+                converted_translit;
+          }
+      }
+# endif
+#endif
+    }
+  else
+    {
+      name_converted = name_utf8;
+      name_converted_translit = name_utf8;
+    }
+
+  /* The name in locale encoding.  */
+  name = (name_converted != NULL ? name_converted :
+          name_converted_translit != NULL ? name_converted_translit :
+          name_ascii);
+
+  /* See whether we have a translation.  Some translators have not understood
+     that they should use the UTF-8 form of the name, if possible.  So if the
+     translator provided a no-op translation, we ignore it.  */
+  if (strcmp (translation, name_ascii) != 0)
+    {
+      /* See whether the translation contains the original name.  */
+      if (mbsstr_trimmed_wordbounded (translation, name_ascii)
+          || (name_converted != NULL
+              && mbsstr_trimmed_wordbounded (translation, name_converted))
+          || (name_converted_translit != NULL
+              && mbsstr_trimmed_wordbounded (translation, name_converted_translit)))
+        {
+          if (alloc_name_converted != NULL)
+            free (alloc_name_converted);
+          if (alloc_name_converted_translit != NULL)
+            free (alloc_name_converted_translit);
+          return translation;
+        }
+      else
+        {
+          /* Return "TRANSLATION (NAME)".  */
+          char *result =
+            XNMALLOC (strlen (translation) + 2 + strlen (name) + 1 + 1, char);
+
+          sprintf (result, "%s (%s)", translation, name);
+
+          if (alloc_name_converted != NULL)
+            free (alloc_name_converted);
+          if (alloc_name_converted_translit != NULL)
+            free (alloc_name_converted_translit);
+          return result;
+        }
+    }
+  else
+    {
+      if (alloc_name_converted != NULL && alloc_name_converted != name)
+        free (alloc_name_converted);
+      if (alloc_name_converted_translit != NULL
+          && alloc_name_converted_translit != name)
+        free (alloc_name_converted_translit);
+      return name;
+    }
+}
+
+#ifdef TEST1
+# include <locale.h>
+int
+main (int argc, char *argv[])
+{
+  setlocale (LC_ALL, "");
+  if (mbsstr_trimmed_wordbounded (argv[1], argv[2]))
+    printf("found\n");
+  return 0;
+}
+#endif
+
+#ifdef TEST2
+# include <locale.h>
+# include <stdio.h>
+int
+main (int argc, char *argv[])
+{
+  setlocale (LC_ALL, "");
+  printf ("%s\n", proper_name_utf8 ("Franc,ois Pinard", "Fran\303\247ois Pinard"));
+  return 0;
+}
+#endif
diff --git a/src/grep/lib/propername.h b/src/grep/lib/propername.h
new file mode 100644
index 0000000..ee09d7c
--- /dev/null
+++ b/src/grep/lib/propername.h
@@ -0,0 +1,96 @@
+/* Localization of proper names.  -*- coding: utf-8 -*-
+   Copyright (C) 2006, 2008-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2006.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* INTRODUCTION
+
+   What do
+
+      Torbjörn Granlund    (coreutils)
+      François Pinard      (coreutils)
+      Danilo Å egan         (gettext)
+
+   have in common?
+
+   A non-ASCII name. This causes trouble in the --version output. The simple
+   "solution" unfortunately mutilates the name.
+
+     $ du --version | grep Granlund
+     Écrit par Torbjorn Granlund, David MacKenzie, Paul Eggert et Jim Meyering.
+
+     $ ptx --version | grep Pinard
+     Écrit par F. Pinard.
+
+   What is desirable, is to print the full name if the output character set
+   allows it, and the ASCIIfied name only as a fallback.
+
+     $ recode-sr-latin --version
+     ...
+     Written by Danilo Å egan and Bruno Haible.
+
+     $ LC_ALL=C recode-sr-latin --version
+     ...
+     Written by Danilo Segan and Bruno Haible.
+
+   The 'propername' module does exactly this. Plus, for languages that use
+   a different writing system than the Latin alphabet, it allows a translator
+   to write the name using that different writing system. In that case the
+   output will look like this:
+      <translated name> (<original name in English>)
+
+   To use the 'propername' module requires two simple steps:
+
+     1) Add it to the list of gnulib modules to import,
+
+     2) Change the arguments of version_etc(),
+
+          from "Paul Eggert"
+          to   proper_name ("Paul Eggert")
+
+          from "Torbjorn Granlund"
+          to   proper_name_utf8 ("Torbjorn Granlund", "Torbj\303\266rn Granlund")
+
+          from "F. Pinard"
+          to   proper_name_utf8 ("Franc,ois Pinard", "Fran\303\247ois Pinard")
+
+        (Optionally, here you can also add / * TRANSLATORS: ... * / comments
+        explaining how the name is written or pronounced.)
+ */
+
+#ifndef _PROPERNAME_H
+#define _PROPERNAME_H
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Return the localization of NAME.  NAME is written in ASCII.  */
+extern const char * proper_name (const char *name) /* NOT attribute const */;
+
+/* Return the localization of a name whose original writing is not ASCII.
+   NAME_UTF8 is the real name, written in UTF-8 with octal or hexadecimal
+   escape sequences.  NAME_ASCII is a fallback written only with ASCII
+   characters.  */
+extern const char * proper_name_utf8 (const char *name_ascii,
+                                      const char *name_utf8);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _PROPERNAME_H */
diff --git a/src/grep/lib/quote.h b/src/grep/lib/quote.h
new file mode 100644
index 0000000..3204997
--- /dev/null
+++ b/src/grep/lib/quote.h
@@ -0,0 +1,46 @@
+/* quote.h - prototypes for quote.c
+
+   Copyright (C) 1998-2001, 2003, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef QUOTE_H_
+# define QUOTE_H_ 1
+
+# include <stddef.h>
+
+/* The quoting options used by quote_n and quote.  Its type is incomplete,
+   so it's useful only in expressions like '&quote_quoting_options'.  */
+extern struct quoting_options quote_quoting_options;
+
+/* Return an unambiguous printable representation of ARG (of size
+   ARGSIZE), allocated in slot N, suitable for diagnostics.  If
+   ARGSIZE is SIZE_MAX, use the string length of the argument for
+   ARGSIZE.  */
+char const *quote_n_mem (int n, char const *arg, size_t argsize);
+
+/* Return an unambiguous printable representation of ARG (of size
+   ARGSIZE), suitable for diagnostics.  If ARGSIZE is SIZE_MAX, use
+   the string length of the argument for ARGSIZE.  */
+char const *quote_mem (char const *arg, size_t argsize);
+
+/* Return an unambiguous printable representation of ARG, allocated in
+   slot N, suitable for diagnostics.  */
+char const *quote_n (int n, char const *arg);
+
+/* Return an unambiguous printable representation of ARG, suitable for
+   diagnostics.  */
+char const *quote (char const *arg);
+
+#endif /* !QUOTE_H_ */
diff --git a/src/grep/lib/quotearg.c b/src/grep/lib/quotearg.c
new file mode 100644
index 0000000..dc4babc
--- /dev/null
+++ b/src/grep/lib/quotearg.c
@@ -0,0 +1,1081 @@
+/* quotearg.c - quote arguments for output
+
+   Copyright (C) 1998-2002, 2004-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert <eggert@twinsun.com> */
+
+/* Without this pragma, gcc 4.7.0 20111124 mistakenly suggests that
+   the quoting_options_from_style function might be candidate for
+   attribute 'pure'  */
+#if (__GNUC__ == 4 && 6 <= __GNUC_MINOR__) || 4 < __GNUC__
+# pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
+#endif
+
+#include <config.h>
+
+#include "quotearg.h"
+#include "quote.h"
+
+#include "attribute.h"
+#include "minmax.h"
+#include "xalloc.h"
+#include "c-strcaseeq.h"
+#include "localcharset.h"
+
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include <wctype.h>
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+#define N_(msgid) msgid
+
+#ifndef SIZE_MAX
+# define SIZE_MAX ((size_t) -1)
+#endif
+
+#define INT_BITS (sizeof (int) * CHAR_BIT)
+
+struct quoting_options
+{
+  /* Basic quoting style.  */
+  enum quoting_style style;
+
+  /* Additional flags.  Bitwise combination of enum quoting_flags.  */
+  int flags;
+
+  /* Quote the characters indicated by this bit vector even if the
+     quoting style would not normally require them to be quoted.  */
+  unsigned int quote_these_too[(UCHAR_MAX / INT_BITS) + 1];
+
+  /* The left quote for custom_quoting_style.  */
+  char const *left_quote;
+
+  /* The right quote for custom_quoting_style.  */
+  char const *right_quote;
+};
+
+/* Names of quoting styles.  */
+char const *const quoting_style_args[] =
+{
+  "literal",
+  "shell",
+  "shell-always",
+  "shell-escape",
+  "shell-escape-always",
+  "c",
+  "c-maybe",
+  "escape",
+  "locale",
+  "clocale",
+  0
+};
+
+/* Correspondences to quoting style names.  */
+enum quoting_style const quoting_style_vals[] =
+{
+  literal_quoting_style,
+  shell_quoting_style,
+  shell_always_quoting_style,
+  shell_escape_quoting_style,
+  shell_escape_always_quoting_style,
+  c_quoting_style,
+  c_maybe_quoting_style,
+  escape_quoting_style,
+  locale_quoting_style,
+  clocale_quoting_style
+};
+
+/* The default quoting options.  */
+static struct quoting_options default_quoting_options;
+
+/* Allocate a new set of quoting options, with contents initially identical
+   to O if O is not null, or to the default if O is null.
+   It is the caller's responsibility to free the result.  */
+struct quoting_options *
+clone_quoting_options (struct quoting_options *o)
+{
+  int e = errno;
+  struct quoting_options *p = xmemdup (o ? o : &default_quoting_options,
+                                       sizeof *o);
+  errno = e;
+  return p;
+}
+
+/* Get the value of O's quoting style.  If O is null, use the default.  */
+enum quoting_style
+get_quoting_style (struct quoting_options const *o)
+{
+  return (o ? o : &default_quoting_options)->style;
+}
+
+/* In O (or in the default if O is null),
+   set the value of the quoting style to S.  */
+void
+set_quoting_style (struct quoting_options *o, enum quoting_style s)
+{
+  (o ? o : &default_quoting_options)->style = s;
+}
+
+/* In O (or in the default if O is null),
+   set the value of the quoting options for character C to I.
+   Return the old value.  Currently, the only values defined for I are
+   0 (the default) and 1 (which means to quote the character even if
+   it would not otherwise be quoted).  */
+int
+set_char_quoting (struct quoting_options *o, char c, int i)
+{
+  unsigned char uc = c;
+  unsigned int *p =
+    (o ? o : &default_quoting_options)->quote_these_too + uc / INT_BITS;
+  int shift = uc % INT_BITS;
+  int r = (*p >> shift) & 1;
+  *p ^= ((i & 1) ^ r) << shift;
+  return r;
+}
+
+/* In O (or in the default if O is null),
+   set the value of the quoting options flag to I, which can be a
+   bitwise combination of enum quoting_flags, or 0 for default
+   behavior.  Return the old value.  */
+int
+set_quoting_flags (struct quoting_options *o, int i)
+{
+  int r;
+  if (!o)
+    o = &default_quoting_options;
+  r = o->flags;
+  o->flags = i;
+  return r;
+}
+
+void
+set_custom_quoting (struct quoting_options *o,
+                    char const *left_quote, char const *right_quote)
+{
+  if (!o)
+    o = &default_quoting_options;
+  o->style = custom_quoting_style;
+  if (!left_quote || !right_quote)
+    abort ();
+  o->left_quote = left_quote;
+  o->right_quote = right_quote;
+}
+
+/* Return quoting options for STYLE, with no extra quoting.  */
+static struct quoting_options /* NOT PURE!! */
+quoting_options_from_style (enum quoting_style style)
+{
+  struct quoting_options o = { literal_quoting_style, 0, { 0 }, NULL, NULL };
+  if (style == custom_quoting_style)
+    abort ();
+  o.style = style;
+  return o;
+}
+
+/* MSGID approximates a quotation mark.  Return its translation if it
+   has one; otherwise, return either it or "\"", depending on S.
+
+   S is either clocale_quoting_style or locale_quoting_style.  */
+static char const *
+gettext_quote (char const *msgid, enum quoting_style s)
+{
+  char const *translation = _(msgid);
+  char const *locale_code;
+
+  if (translation != msgid)
+    return translation;
+
+  /* For UTF-8 and GB-18030, use single quotes U+2018 and U+2019.
+     Here is a list of other locales that include U+2018 and U+2019:
+
+        ISO-8859-7   0xA1                 KOI8-T       0x91
+        CP869        0x8B                 CP874        0x91
+        CP932        0x81 0x65            CP936        0xA1 0xAE
+        CP949        0xA1 0xAE            CP950        0xA1 0xA5
+        CP1250       0x91                 CP1251       0x91
+        CP1252       0x91                 CP1253       0x91
+        CP1254       0x91                 CP1255       0x91
+        CP1256       0x91                 CP1257       0x91
+        EUC-JP       0xA1 0xC6            EUC-KR       0xA1 0xAE
+        EUC-TW       0xA1 0xE4            BIG5         0xA1 0xA5
+        BIG5-HKSCS   0xA1 0xA5            EUC-CN       0xA1 0xAE
+        GBK          0xA1 0xAE            Georgian-PS  0x91
+        PT154        0x91
+
+     None of these is still in wide use; using iconv is overkill.  */
+  locale_code = locale_charset ();
+  if (STRCASEEQ (locale_code, "UTF-8", 'U','T','F','-','8',0,0,0,0))
+    return msgid[0] == '`' ? "\xe2\x80\x98": "\xe2\x80\x99";
+  if (STRCASEEQ (locale_code, "GB18030", 'G','B','1','8','0','3','0',0,0))
+    return msgid[0] == '`' ? "\xa1\ae": "\xa1\xaf";
+
+  return (s == clocale_quoting_style ? "\"" : "'");
+}
+
+/* Place into buffer BUFFER (of size BUFFERSIZE) a quoted version of
+   argument ARG (of size ARGSIZE), using QUOTING_STYLE, FLAGS, and
+   QUOTE_THESE_TOO to control quoting.
+   Terminate the output with a null character, and return the written
+   size of the output, not counting the terminating null.
+   If BUFFERSIZE is too small to store the output string, return the
+   value that would have been returned had BUFFERSIZE been large enough.
+   If ARGSIZE is SIZE_MAX, use the string length of the argument for ARGSIZE.
+
+   This function acts like quotearg_buffer (BUFFER, BUFFERSIZE, ARG,
+   ARGSIZE, O), except it breaks O into its component pieces and is
+   not careful about errno.  */
+
+static size_t
+quotearg_buffer_restyled (char *buffer, size_t buffersize,
+                          char const *arg, size_t argsize,
+                          enum quoting_style quoting_style, int flags,
+                          unsigned int const *quote_these_too,
+                          char const *left_quote,
+                          char const *right_quote)
+{
+  size_t i;
+  size_t len = 0;
+  size_t orig_buffersize = 0;
+  char const *quote_string = 0;
+  size_t quote_string_len = 0;
+  bool backslash_escapes = false;
+  bool unibyte_locale = MB_CUR_MAX == 1;
+  bool elide_outer_quotes = (flags & QA_ELIDE_OUTER_QUOTES) != 0;
+  bool pending_shell_escape_end = false;
+  bool encountered_single_quote = false;
+  bool all_c_and_shell_quote_compat = true;
+
+#define STORE(c) \
+    do \
+      { \
+        if (len < buffersize) \
+          buffer[len] = (c); \
+        len++; \
+      } \
+    while (0)
+
+#define START_ESC() \
+    do \
+      { \
+        if (elide_outer_quotes) \
+          goto force_outer_quoting_style; \
+        escaping = true; \
+        if (quoting_style == shell_always_quoting_style \
+            && ! pending_shell_escape_end) \
+          { \
+            STORE ('\''); \
+            STORE ('$'); \
+            STORE ('\''); \
+            pending_shell_escape_end = true; \
+          } \
+        STORE ('\\'); \
+      } \
+    while (0)
+
+#define END_ESC() \
+    do \
+      { \
+        if (pending_shell_escape_end && ! escaping) \
+          { \
+            STORE ('\''); \
+            STORE ('\''); \
+            pending_shell_escape_end = false; \
+          } \
+      } \
+    while (0)
+
+ process_input:
+
+  switch (quoting_style)
+    {
+    case c_maybe_quoting_style:
+      quoting_style = c_quoting_style;
+      elide_outer_quotes = true;
+      FALLTHROUGH;
+    case c_quoting_style:
+      if (!elide_outer_quotes)
+        STORE ('"');
+      backslash_escapes = true;
+      quote_string = "\"";
+      quote_string_len = 1;
+      break;
+
+    case escape_quoting_style:
+      backslash_escapes = true;
+      elide_outer_quotes = false;
+      break;
+
+    case locale_quoting_style:
+    case clocale_quoting_style:
+    case custom_quoting_style:
+      {
+        if (quoting_style != custom_quoting_style)
+          {
+            /* TRANSLATORS:
+               Get translations for open and closing quotation marks.
+               The message catalog should translate "`" to a left
+               quotation mark suitable for the locale, and similarly for
+               "'".  For example, a French Unicode local should translate
+               these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+               QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+               QUOTATION MARK), respectively.
+
+               If the catalog has no translation, we will try to
+               use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+               Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+               current locale is not Unicode, locale_quoting_style
+               will quote 'like this', and clocale_quoting_style will
+               quote "like this".  You should always include translations
+               for "`" and "'" even if U+2018 and U+2019 are appropriate
+               for your locale.
+
+               If you don't know what to put here, please see
+               <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+               and use glyphs suitable for your language.  */
+            left_quote = gettext_quote (N_("`"), quoting_style);
+            right_quote = gettext_quote (N_("'"), quoting_style);
+          }
+        if (!elide_outer_quotes)
+          for (quote_string = left_quote; *quote_string; quote_string++)
+            STORE (*quote_string);
+        backslash_escapes = true;
+        quote_string = right_quote;
+        quote_string_len = strlen (quote_string);
+      }
+      break;
+
+    case shell_escape_quoting_style:
+      backslash_escapes = true;
+      FALLTHROUGH;
+    case shell_quoting_style:
+      elide_outer_quotes = true;
+      FALLTHROUGH;
+    case shell_escape_always_quoting_style:
+      if (!elide_outer_quotes)
+        backslash_escapes = true;
+      FALLTHROUGH;
+    case shell_always_quoting_style:
+      quoting_style = shell_always_quoting_style;
+      if (!elide_outer_quotes)
+        STORE ('\'');
+      quote_string = "'";
+      quote_string_len = 1;
+      break;
+
+    case literal_quoting_style:
+      elide_outer_quotes = false;
+      break;
+
+    default:
+      abort ();
+    }
+
+  for (i = 0;  ! (argsize == SIZE_MAX ? arg[i] == '\0' : i == argsize);  i++)
+    {
+      unsigned char c;
+      unsigned char esc;
+      bool is_right_quote = false;
+      bool escaping = false;
+      bool c_and_shell_quote_compat = false;
+
+      if (backslash_escapes
+          && quoting_style != shell_always_quoting_style
+          && quote_string_len
+          && (i + quote_string_len
+              <= (argsize == SIZE_MAX && 1 < quote_string_len
+                  /* Use strlen only if we must: when argsize is SIZE_MAX,
+                     and when the quote string is more than 1 byte long.
+                     If we do call strlen, save the result.  */
+                  ? (argsize = strlen (arg)) : argsize))
+          && memcmp (arg + i, quote_string, quote_string_len) == 0)
+        {
+          if (elide_outer_quotes)
+            goto force_outer_quoting_style;
+          is_right_quote = true;
+        }
+
+      c = arg[i];
+      switch (c)
+        {
+        case '\0':
+          if (backslash_escapes)
+            {
+              START_ESC ();
+              /* If quote_string were to begin with digits, we'd need to
+                 test for the end of the arg as well.  However, it's
+                 hard to imagine any locale that would use digits in
+                 quotes, and set_custom_quoting is documented not to
+                 accept them.  Use only a single \0 with shell-escape
+                 as currently digits are not printed within $'...'  */
+              if (quoting_style != shell_always_quoting_style
+                  && i + 1 < argsize && '0' <= arg[i + 1] && arg[i + 1] <= '9')
+                {
+                  STORE ('0');
+                  STORE ('0');
+                }
+              c = '0';
+              /* We don't have to worry that this last '0' will be
+                 backslash-escaped because, again, quote_string should
+                 not start with it and because quote_these_too is
+                 documented as not accepting it.  */
+            }
+          else if (flags & QA_ELIDE_NULL_BYTES)
+            continue;
+          break;
+
+        case '?':
+          switch (quoting_style)
+            {
+            case shell_always_quoting_style:
+              if (elide_outer_quotes)
+                goto force_outer_quoting_style;
+              break;
+
+            case c_quoting_style:
+              if ((flags & QA_SPLIT_TRIGRAPHS)
+                  && i + 2 < argsize && arg[i + 1] == '?')
+                switch (arg[i + 2])
+                  {
+                  case '!': case '\'':
+                  case '(': case ')': case '-': case '/':
+                  case '<': case '=': case '>':
+                    /* Escape the second '?' in what would otherwise be
+                       a trigraph.  */
+                    if (elide_outer_quotes)
+                      goto force_outer_quoting_style;
+                    c = arg[i + 2];
+                    i += 2;
+                    STORE ('?');
+                    STORE ('"');
+                    STORE ('"');
+                    STORE ('?');
+                    break;
+
+                  default:
+                    break;
+                  }
+              break;
+
+            default:
+              break;
+            }
+          break;
+
+        case '\a': esc = 'a'; goto c_escape;
+        case '\b': esc = 'b'; goto c_escape;
+        case '\f': esc = 'f'; goto c_escape;
+        case '\n': esc = 'n'; goto c_and_shell_escape;
+        case '\r': esc = 'r'; goto c_and_shell_escape;
+        case '\t': esc = 't'; goto c_and_shell_escape;
+        case '\v': esc = 'v'; goto c_escape;
+        case '\\': esc = c;
+          /* Never need to escape '\' in shell case.  */
+          if (quoting_style == shell_always_quoting_style)
+            {
+              if (elide_outer_quotes)
+                goto force_outer_quoting_style;
+              goto store_c;
+            }
+
+          /* No need to escape the escape if we are trying to elide
+             outer quotes and nothing else is problematic.  */
+          if (backslash_escapes && elide_outer_quotes && quote_string_len)
+            goto store_c;
+
+        c_and_shell_escape:
+          if (quoting_style == shell_always_quoting_style
+              && elide_outer_quotes)
+            goto force_outer_quoting_style;
+          /* fall through */
+        c_escape:
+          if (backslash_escapes)
+            {
+              c = esc;
+              goto store_escape;
+            }
+          break;
+
+        case '{': case '}': /* sometimes special if isolated */
+          if (! (argsize == SIZE_MAX ? arg[1] == '\0' : argsize == 1))
+            break;
+          FALLTHROUGH;
+        case '#': case '~':
+          if (i != 0)
+            break;
+          FALLTHROUGH;
+        case ' ':
+          c_and_shell_quote_compat = true;
+          FALLTHROUGH;
+        case '!': /* special in bash */
+        case '"': case '$': case '&':
+        case '(': case ')': case '*': case ';':
+        case '<':
+        case '=': /* sometimes special in 0th or (with "set -k") later args */
+        case '>': case '[':
+        case '^': /* special in old /bin/sh, e.g. SunOS 4.1.4 */
+        case '`': case '|':
+          /* A shell special character.  In theory, '$' and '`' could
+             be the first bytes of multibyte characters, which means
+             we should check them with mbrtowc, but in practice this
+             doesn't happen so it's not worth worrying about.  */
+          if (quoting_style == shell_always_quoting_style
+              && elide_outer_quotes)
+            goto force_outer_quoting_style;
+          break;
+
+        case '\'':
+          encountered_single_quote = true;
+          c_and_shell_quote_compat = true;
+          if (quoting_style == shell_always_quoting_style)
+            {
+              if (elide_outer_quotes)
+                goto force_outer_quoting_style;
+
+              if (buffersize && ! orig_buffersize)
+                {
+                  /* Just scan string to see if supports a more concise
+                     representation, rather than writing a longer string
+                     but returning the length of the more concise form.  */
+                  orig_buffersize = buffersize;
+                  buffersize = 0;
+                }
+
+              STORE ('\'');
+              STORE ('\\');
+              STORE ('\'');
+              pending_shell_escape_end = false;
+            }
+          break;
+
+        case '%': case '+': case ',': case '-': case '.': case '/':
+        case '0': case '1': case '2': case '3': case '4': case '5':
+        case '6': case '7': case '8': case '9': case ':':
+        case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+        case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
+        case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
+        case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
+        case 'Y': case 'Z': case ']': case '_': case 'a': case 'b':
+        case 'c': case 'd': case 'e': case 'f': case 'g': case 'h':
+        case 'i': case 'j': case 'k': case 'l': case 'm': case 'n':
+        case 'o': case 'p': case 'q': case 'r': case 's': case 't':
+        case 'u': case 'v': case 'w': case 'x': case 'y': case 'z':
+          /* These characters don't cause problems, no matter what the
+             quoting style is.  They cannot start multibyte sequences.
+             A digit or a special letter would cause trouble if it
+             appeared at the beginning of quote_string because we'd then
+             escape by prepending a backslash.  However, it's hard to
+             imagine any locale that would use digits or letters as
+             quotes, and set_custom_quoting is documented not to accept
+             them.  Also, a digit or a special letter would cause
+             trouble if it appeared in quote_these_too, but that's also
+             documented as not accepting them.  */
+          c_and_shell_quote_compat = true;
+          break;
+
+        default:
+          /* If we have a multibyte sequence, copy it until we reach
+             its end, find an error, or come back to the initial shift
+             state.  For C-like styles, if the sequence has
+             unprintable characters, escape the whole sequence, since
+             we can't easily escape single characters within it.  */
+          {
+            /* Length of multibyte sequence found so far.  */
+            size_t m;
+
+            bool printable;
+
+            if (unibyte_locale)
+              {
+                m = 1;
+                printable = isprint (c) != 0;
+              }
+            else
+              {
+                mbstate_t mbstate;
+                memset (&mbstate, 0, sizeof mbstate);
+
+                m = 0;
+                printable = true;
+                if (argsize == SIZE_MAX)
+                  argsize = strlen (arg);
+
+                do
+                  {
+                    wchar_t w;
+                    size_t bytes = mbrtowc (&w, &arg[i + m],
+                                            argsize - (i + m), &mbstate);
+                    if (bytes == 0)
+                      break;
+                    else if (bytes == (size_t) -1)
+                      {
+                        printable = false;
+                        break;
+                      }
+                    else if (bytes == (size_t) -2)
+                      {
+                        printable = false;
+                        while (i + m < argsize && arg[i + m])
+                          m++;
+                        break;
+                      }
+                    else
+                      {
+                        /* Work around a bug with older shells that "see" a '\'
+                           that is really the 2nd byte of a multibyte character.
+                           In practice the problem is limited to ASCII
+                           chars >= '@' that are shell special chars.  */
+                        if ('[' == 0x5b && elide_outer_quotes
+                            && quoting_style == shell_always_quoting_style)
+                          {
+                            size_t j;
+                            for (j = 1; j < bytes; j++)
+                              switch (arg[i + m + j])
+                                {
+                                case '[': case '\\': case '^':
+                                case '`': case '|':
+                                  goto force_outer_quoting_style;
+
+                                default:
+                                  break;
+                                }
+                          }
+
+                        if (! iswprint (w))
+                          printable = false;
+                        m += bytes;
+                      }
+                  }
+                while (! mbsinit (&mbstate));
+              }
+
+            c_and_shell_quote_compat = printable;
+
+            if (1 < m || (backslash_escapes && ! printable))
+              {
+                /* Output a multibyte sequence, or an escaped
+                   unprintable unibyte character.  */
+                size_t ilim = i + m;
+
+                for (;;)
+                  {
+                    if (backslash_escapes && ! printable)
+                      {
+                        START_ESC ();
+                        STORE ('0' + (c >> 6));
+                        STORE ('0' + ((c >> 3) & 7));
+                        c = '0' + (c & 7);
+                      }
+                    else if (is_right_quote)
+                      {
+                        STORE ('\\');
+                        is_right_quote = false;
+                      }
+                    if (ilim <= i + 1)
+                      break;
+                    END_ESC ();
+                    STORE (c);
+                    c = arg[++i];
+                  }
+
+                goto store_c;
+              }
+          }
+        }
+
+      if (! (((backslash_escapes && quoting_style != shell_always_quoting_style)
+              || elide_outer_quotes)
+             && quote_these_too
+             && quote_these_too[c / INT_BITS] >> (c % INT_BITS) & 1)
+          && !is_right_quote)
+        goto store_c;
+
+    store_escape:
+      START_ESC ();
+
+    store_c:
+      END_ESC ();
+      STORE (c);
+
+      if (! c_and_shell_quote_compat)
+        all_c_and_shell_quote_compat = false;
+    }
+
+  if (len == 0 && quoting_style == shell_always_quoting_style
+      && elide_outer_quotes)
+    goto force_outer_quoting_style;
+
+  /* Single shell quotes (') are commonly enough used as an apostrophe,
+     that we attempt to minimize the quoting in this case.  Note itʼs
+     better to use the apostrophe modifier "\u02BC" if possible, as that
+     renders better and works with the word match regex \W+ etc.  */
+  if (quoting_style == shell_always_quoting_style && ! elide_outer_quotes
+      && encountered_single_quote)
+    {
+      if (all_c_and_shell_quote_compat)
+        return quotearg_buffer_restyled (buffer, orig_buffersize, arg, argsize,
+                                         c_quoting_style,
+                                         flags, quote_these_too,
+                                         left_quote, right_quote);
+      else if (! buffersize && orig_buffersize)
+        {
+          /* Disable read-only scan, and reprocess to write quoted string.  */
+          buffersize = orig_buffersize;
+          len = 0;
+          goto process_input;
+        }
+    }
+
+  if (quote_string && !elide_outer_quotes)
+    for (; *quote_string; quote_string++)
+      STORE (*quote_string);
+
+  if (len < buffersize)
+    buffer[len] = '\0';
+  return len;
+
+ force_outer_quoting_style:
+  /* Don't reuse quote_these_too, since the addition of outer quotes
+     sufficiently quotes the specified characters.  */
+  if (quoting_style == shell_always_quoting_style && backslash_escapes)
+    quoting_style = shell_escape_always_quoting_style;
+  return quotearg_buffer_restyled (buffer, buffersize, arg, argsize,
+                                   quoting_style,
+                                   flags & ~QA_ELIDE_OUTER_QUOTES, NULL,
+                                   left_quote, right_quote);
+}
+
+/* Place into buffer BUFFER (of size BUFFERSIZE) a quoted version of
+   argument ARG (of size ARGSIZE), using O to control quoting.
+   If O is null, use the default.
+   Terminate the output with a null character, and return the written
+   size of the output, not counting the terminating null.
+   If BUFFERSIZE is too small to store the output string, return the
+   value that would have been returned had BUFFERSIZE been large enough.
+   If ARGSIZE is SIZE_MAX, use the string length of the argument for
+   ARGSIZE.  */
+size_t
+quotearg_buffer (char *buffer, size_t buffersize,
+                 char const *arg, size_t argsize,
+                 struct quoting_options const *o)
+{
+  struct quoting_options const *p = o ? o : &default_quoting_options;
+  int e = errno;
+  size_t r = quotearg_buffer_restyled (buffer, buffersize, arg, argsize,
+                                       p->style, p->flags, p->quote_these_too,
+                                       p->left_quote, p->right_quote);
+  errno = e;
+  return r;
+}
+
+char *
+quotearg_alloc (char const *arg, size_t argsize,
+                struct quoting_options const *o)
+{
+  return quotearg_alloc_mem (arg, argsize, NULL, o);
+}
+
+/* Like quotearg_buffer (..., ARG, ARGSIZE, O), except return newly
+   allocated storage containing the quoted string, and store the
+   resulting size into *SIZE, if non-NULL.  The result can contain
+   embedded null bytes only if ARGSIZE is not SIZE_MAX, SIZE is not
+   NULL, and set_quoting_flags has not set the null byte elision
+   flag.  */
+char *
+quotearg_alloc_mem (char const *arg, size_t argsize, size_t *size,
+                    struct quoting_options const *o)
+{
+  struct quoting_options const *p = o ? o : &default_quoting_options;
+  int e = errno;
+  /* Elide embedded null bytes if we can't return a size.  */
+  int flags = p->flags | (size ? 0 : QA_ELIDE_NULL_BYTES);
+  size_t bufsize = quotearg_buffer_restyled (0, 0, arg, argsize, p->style,
+                                             flags, p->quote_these_too,
+                                             p->left_quote,
+                                             p->right_quote) + 1;
+  char *buf = xcharalloc (bufsize);
+  quotearg_buffer_restyled (buf, bufsize, arg, argsize, p->style, flags,
+                            p->quote_these_too,
+                            p->left_quote, p->right_quote);
+  errno = e;
+  if (size)
+    *size = bufsize - 1;
+  return buf;
+}
+
+/* A storage slot with size and pointer to a value.  */
+struct slotvec
+{
+  size_t size;
+  char *val;
+};
+
+/* Preallocate a slot 0 buffer, so that the caller can always quote
+   one small component of a "memory exhausted" message in slot 0.  */
+static char slot0[256];
+static int nslots = 1;
+static struct slotvec slotvec0 = {sizeof slot0, slot0};
+static struct slotvec *slotvec = &slotvec0;
+
+void
+quotearg_free (void)
+{
+  struct slotvec *sv = slotvec;
+  int i;
+  for (i = 1; i < nslots; i++)
+    free (sv[i].val);
+  if (sv[0].val != slot0)
+    {
+      free (sv[0].val);
+      slotvec0.size = sizeof slot0;
+      slotvec0.val = slot0;
+    }
+  if (sv != &slotvec0)
+    {
+      free (sv);
+      slotvec = &slotvec0;
+    }
+  nslots = 1;
+}
+
+/* Use storage slot N to return a quoted version of argument ARG.
+   ARG is of size ARGSIZE, but if that is SIZE_MAX, ARG is a
+   null-terminated string.
+   OPTIONS specifies the quoting options.
+   The returned value points to static storage that can be
+   reused by the next call to this function with the same value of N.
+   N must be nonnegative; it is typically small, and must be
+   less than MIN (INT_MAX, IDX_MAX).  The type of N is signed
+   to allow for future extensions (using negative values).  */
+static char *
+quotearg_n_options (int n, char const *arg, size_t argsize,
+                    struct quoting_options const *options)
+{
+  int e = errno;
+
+  struct slotvec *sv = slotvec;
+
+  int nslots_max = MIN (INT_MAX, IDX_MAX);
+  if (! (0 <= n && n < nslots_max))
+    abort ();
+
+  if (nslots <= n)
+    {
+      bool preallocated = (sv == &slotvec0);
+      idx_t new_nslots = nslots;
+
+      slotvec = sv = xpalloc (preallocated ? NULL : sv, &new_nslots,
+                              n - nslots + 1, nslots_max, sizeof *sv);
+      if (preallocated)
+        *sv = slotvec0;
+      memset (sv + nslots, 0, (new_nslots - nslots) * sizeof *sv);
+      nslots = new_nslots;
+    }
+
+  {
+    size_t size = sv[n].size;
+    char *val = sv[n].val;
+    /* Elide embedded null bytes since we don't return a size.  */
+    int flags = options->flags | QA_ELIDE_NULL_BYTES;
+    size_t qsize = quotearg_buffer_restyled (val, size, arg, argsize,
+                                             options->style, flags,
+                                             options->quote_these_too,
+                                             options->left_quote,
+                                             options->right_quote);
+
+    if (size <= qsize)
+      {
+        sv[n].size = size = qsize + 1;
+        if (val != slot0)
+          free (val);
+        sv[n].val = val = xcharalloc (size);
+        quotearg_buffer_restyled (val, size, arg, argsize, options->style,
+                                  flags, options->quote_these_too,
+                                  options->left_quote,
+                                  options->right_quote);
+      }
+
+    errno = e;
+    return val;
+  }
+}
+
+char *
+quotearg_n (int n, char const *arg)
+{
+  return quotearg_n_options (n, arg, SIZE_MAX, &default_quoting_options);
+}
+
+char *
+quotearg_n_mem (int n, char const *arg, size_t argsize)
+{
+  return quotearg_n_options (n, arg, argsize, &default_quoting_options);
+}
+
+char *
+quotearg (char const *arg)
+{
+  return quotearg_n (0, arg);
+}
+
+char *
+quotearg_mem (char const *arg, size_t argsize)
+{
+  return quotearg_n_mem (0, arg, argsize);
+}
+
+char *
+quotearg_n_style (int n, enum quoting_style s, char const *arg)
+{
+  struct quoting_options const o = quoting_options_from_style (s);
+  return quotearg_n_options (n, arg, SIZE_MAX, &o);
+}
+
+char *
+quotearg_n_style_mem (int n, enum quoting_style s,
+                      char const *arg, size_t argsize)
+{
+  struct quoting_options const o = quoting_options_from_style (s);
+  return quotearg_n_options (n, arg, argsize, &o);
+}
+
+char *
+quotearg_style (enum quoting_style s, char const *arg)
+{
+  return quotearg_n_style (0, s, arg);
+}
+
+char *
+quotearg_style_mem (enum quoting_style s, char const *arg, size_t argsize)
+{
+  return quotearg_n_style_mem (0, s, arg, argsize);
+}
+
+char *
+quotearg_char_mem (char const *arg, size_t argsize, char ch)
+{
+  struct quoting_options options;
+  options = default_quoting_options;
+  set_char_quoting (&options, ch, 1);
+  return quotearg_n_options (0, arg, argsize, &options);
+}
+
+char *
+quotearg_char (char const *arg, char ch)
+{
+  return quotearg_char_mem (arg, SIZE_MAX, ch);
+}
+
+char *
+quotearg_colon (char const *arg)
+{
+  return quotearg_char (arg, ':');
+}
+
+char *
+quotearg_colon_mem (char const *arg, size_t argsize)
+{
+  return quotearg_char_mem (arg, argsize, ':');
+}
+
+char *
+quotearg_n_style_colon (int n, enum quoting_style s, char const *arg)
+{
+  struct quoting_options options;
+  options = quoting_options_from_style (s);
+  set_char_quoting (&options, ':', 1);
+  return quotearg_n_options (n, arg, SIZE_MAX, &options);
+}
+
+char *
+quotearg_n_custom (int n, char const *left_quote,
+                   char const *right_quote, char const *arg)
+{
+  return quotearg_n_custom_mem (n, left_quote, right_quote, arg,
+                                SIZE_MAX);
+}
+
+char *
+quotearg_n_custom_mem (int n, char const *left_quote,
+                       char const *right_quote,
+                       char const *arg, size_t argsize)
+{
+  struct quoting_options o = default_quoting_options;
+  set_custom_quoting (&o, left_quote, right_quote);
+  return quotearg_n_options (n, arg, argsize, &o);
+}
+
+char *
+quotearg_custom (char const *left_quote, char const *right_quote,
+                 char const *arg)
+{
+  return quotearg_n_custom (0, left_quote, right_quote, arg);
+}
+
+char *
+quotearg_custom_mem (char const *left_quote, char const *right_quote,
+                     char const *arg, size_t argsize)
+{
+  return quotearg_n_custom_mem (0, left_quote, right_quote, arg,
+                                argsize);
+}
+
+
+/* The quoting option used by the functions of quote.h.  */
+struct quoting_options quote_quoting_options =
+  {
+    locale_quoting_style,
+    0,
+    { 0 },
+    NULL, NULL
+  };
+
+char const *
+quote_n_mem (int n, char const *arg, size_t argsize)
+{
+  return quotearg_n_options (n, arg, argsize, &quote_quoting_options);
+}
+
+char const *
+quote_mem (char const *arg, size_t argsize)
+{
+  return quote_n_mem (0, arg, argsize);
+}
+
+char const *
+quote_n (int n, char const *arg)
+{
+  return quote_n_mem (n, arg, SIZE_MAX);
+}
+
+char const *
+quote (char const *arg)
+{
+  return quote_n (0, arg);
+}
+
+/*
+ * Hey Emacs!
+ * Local Variables:
+ * coding: utf-8
+ * End:
+ */
diff --git a/src/grep/lib/quotearg.h b/src/grep/lib/quotearg.h
new file mode 100644
index 0000000..f5644b8
--- /dev/null
+++ b/src/grep/lib/quotearg.h
@@ -0,0 +1,431 @@
+/* quotearg.h - quote arguments for output
+
+   Copyright (C) 1998-2002, 2004, 2006, 2008-2021 Free Software Foundation,
+   Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert <eggert@twinsun.com> */
+
+#ifndef QUOTEARG_H_
+# define QUOTEARG_H_ 1
+
+# include <stdlib.h>
+
+/* Basic quoting styles.  For each style, an example is given on the
+   input strings "simple", "\0 \t\n'\"\033?""?/\\", and "a:b", using
+   quotearg_buffer, quotearg_mem, and quotearg_colon_mem with that
+   style and the default flags and quoted characters.  Note that the
+   examples are shown here as valid C strings rather than what
+   displays on a terminal (with "??/" as a trigraph for "\\").  */
+enum quoting_style
+  {
+    /* Output names as-is (ls --quoting-style=literal).  Can result in
+       embedded null bytes if QA_ELIDE_NULL_BYTES is not in
+       effect.
+
+       quotearg_buffer:
+       "simple", "\0 \t\n'\"\033??/\\", "a:b"
+       quotearg:
+       "simple", " \t\n'\"\033??/\\", "a:b"
+       quotearg_colon:
+       "simple", " \t\n'\"\033??/\\", "a:b"
+    */
+    literal_quoting_style,
+
+    /* Quote names for the shell if they contain shell metacharacters
+       or would cause ambiguous output (ls --quoting-style=shell).
+       Can result in embedded null bytes if QA_ELIDE_NULL_BYTES is not
+       in effect.
+
+       quotearg_buffer:
+       "simple", "'\0 \t\n'\\''\"\033??/\\'", "a:b"
+       quotearg:
+       "simple", "' \t\n'\\''\"\033??/\\'", "a:b"
+       quotearg_colon:
+       "simple", "' \t\n'\\''\"\033??/\\'", "'a:b'"
+    */
+    shell_quoting_style,
+
+    /* Quote names for the shell, even if they would normally not
+       require quoting (ls --quoting-style=shell-always).  Can result
+       in embedded null bytes if QA_ELIDE_NULL_BYTES is not in effect.
+       Behaves like shell_quoting_style if QA_ELIDE_OUTER_QUOTES is in
+       effect.
+
+       quotearg_buffer:
+       "'simple'", "'\0 \t\n'\\''\"\033??/\\'", "'a:b'"
+       quotearg:
+       "'simple'", "' \t\n'\\''\"\033??/\\'", "'a:b'"
+       quotearg_colon:
+       "'simple'", "' \t\n'\\''\"\033??/\\'", "'a:b'"
+    */
+    shell_always_quoting_style,
+
+    /* Quote names for the shell if they contain shell metacharacters
+       or other problematic characters (ls --quoting-style=shell-escape).
+       Non printable characters are quoted using the $'...' syntax,
+       which originated in ksh93 and is widely supported by most shells,
+       and proposed for inclusion in POSIX.
+
+       quotearg_buffer:
+       "simple", "''$'\\0'' '$'\\t\\n'\\''\"'$'\\033''??/\\'", "a:b"
+       quotearg:
+       "simple", "''$'\\0'' '$'\\t\\n'\\''\"'$'\\033''??/\\'", "a:b"
+       quotearg_colon:
+       "simple", "''$'\\0'' '$'\\t\\n'\\''\"'$'\\033''??/\\'", "'a:b'"
+    */
+    shell_escape_quoting_style,
+
+    /* Quote names for the shell even if they would normally not
+       require quoting (ls --quoting-style=shell-escape).
+       Non printable characters are quoted using the $'...' syntax,
+       which originated in ksh93 and is widely supported by most shells,
+       and proposed for inclusion in POSIX.  Behaves like
+       shell_escape_quoting_style if QA_ELIDE_OUTER_QUOTES is in effect.
+
+       quotearg_buffer:
+       "simple", "''$'\\0'' '$'\\t\\n'\\''\"'$'\\033''??/\'", "a:b"
+       quotearg:
+       "simple", "''$'\\0'' '$'\\t\\n'\\''\"'$'\\033''??/\'", "a:b"
+       quotearg_colon:
+       "simple", "''$'\\0'' '$'\\t\\n'\\''\"'$'\\033''??/\'", "'a:b'"
+    */
+    shell_escape_always_quoting_style,
+
+    /* Quote names as for a C language string (ls --quoting-style=c).
+       Behaves like c_maybe_quoting_style if QA_ELIDE_OUTER_QUOTES is
+       in effect.  Split into consecutive strings if
+       QA_SPLIT_TRIGRAPHS.
+
+       quotearg_buffer:
+       "\"simple\"", "\"\\0 \\t\\n'\\\"\\033??/\\\\\"", "\"a:b\""
+       quotearg:
+       "\"simple\"", "\"\\0 \\t\\n'\\\"\\033??/\\\\\"", "\"a:b\""
+       quotearg_colon:
+       "\"simple\"", "\"\\0 \\t\\n'\\\"\\033??/\\\\\"", "\"a\\:b\""
+    */
+    c_quoting_style,
+
+    /* Like c_quoting_style except omit the surrounding double-quote
+       characters if no quoted characters are encountered.
+
+       quotearg_buffer:
+       "simple", "\"\\0 \\t\\n'\\\"\\033??/\\\\\"", "a:b"
+       quotearg:
+       "simple", "\"\\0 \\t\\n'\\\"\\033??/\\\\\"", "a:b"
+       quotearg_colon:
+       "simple", "\"\\0 \\t\\n'\\\"\\033??/\\\\\"", "\"a:b\""
+    */
+    c_maybe_quoting_style,
+
+    /* Like c_quoting_style except always omit the surrounding
+       double-quote characters and ignore QA_SPLIT_TRIGRAPHS
+       (ls --quoting-style=escape).
+
+       quotearg_buffer:
+       "simple", "\\0 \\t\\n'\"\\033??/\\\\", "a:b"
+       quotearg:
+       "simple", "\\0 \\t\\n'\"\\033??/\\\\", "a:b"
+       quotearg_colon:
+       "simple", "\\0 \\t\\n'\"\\033??/\\\\", "a\\:b"
+    */
+    escape_quoting_style,
+
+    /* Like clocale_quoting_style, but use single quotes in the
+       default C locale or if the program does not use gettext
+       (ls --quoting-style=locale).  For UTF-8 locales, quote
+       characters will use Unicode.
+
+       LC_MESSAGES=C
+       quotearg_buffer:
+       "`simple'", "`\\0 \\t\\n\\'\"\\033??/\\\\'", "`a:b'"
+       quotearg:
+       "`simple'", "`\\0 \\t\\n\\'\"\\033??/\\\\'", "`a:b'"
+       quotearg_colon:
+       "`simple'", "`\\0 \\t\\n\\'\"\\033??/\\\\'", "`a\\:b'"
+
+       LC_MESSAGES=pt_PT.utf8
+       quotearg_buffer:
+       "\302\253simple\302\273",
+       "\302\253\\0 \\t\\n'\"\\033??/\\\\\302\253", "\302\253a:b\302\273"
+       quotearg:
+       "\302\253simple\302\273",
+       "\302\253\\0 \\t\\n'\"\\033??/\\\\\302\253", "\302\253a:b\302\273"
+       quotearg_colon:
+       "\302\253simple\302\273",
+       "\302\253\\0 \\t\\n'\"\\033??/\\\\\302\253", "\302\253a\\:b\302\273"
+    */
+    locale_quoting_style,
+
+    /* Like c_quoting_style except use quotation marks appropriate for
+       the locale and ignore QA_SPLIT_TRIGRAPHS
+       (ls --quoting-style=clocale).
+
+       LC_MESSAGES=C
+       quotearg_buffer:
+       "\"simple\"", "\"\\0 \\t\\n'\\\"\\033??/\\\\\"", "\"a:b\""
+       quotearg:
+       "\"simple\"", "\"\\0 \\t\\n'\\\"\\033??/\\\\\"", "\"a:b\""
+       quotearg_colon:
+       "\"simple\"", "\"\\0 \\t\\n'\\\"\\033??/\\\\\"", "\"a\\:b\""
+
+       LC_MESSAGES=pt_PT.utf8
+       quotearg_buffer:
+       "\302\253simple\302\273",
+       "\302\253\\0 \\t\\n'\"\\033??/\\\\\302\253", "\302\253a:b\302\273"
+       quotearg:
+       "\302\253simple\302\273",
+       "\302\253\\0 \\t\\n'\"\\033??/\\\\\302\253", "\302\253a:b\302\273"
+       quotearg_colon:
+       "\302\253simple\302\273",
+       "\302\253\\0 \\t\\n'\"\\033??/\\\\\302\253", "\302\253a\\:b\302\273"
+    */
+    clocale_quoting_style,
+
+    /* Like clocale_quoting_style except use the custom quotation marks
+       set by set_custom_quoting.  If custom quotation marks are not
+       set, the behavior is undefined.
+
+       left_quote = right_quote = "'"
+       quotearg_buffer:
+       "'simple'", "'\\0 \\t\\n\\'\"\\033??/\\\\'", "'a:b'"
+       quotearg:
+       "'simple'", "'\\0 \\t\\n\\'\"\\033??/\\\\'", "'a:b'"
+       quotearg_colon:
+       "'simple'", "'\\0 \\t\\n\\'\"\\033??/\\\\'", "'a\\:b'"
+
+       left_quote = "(" and right_quote = ")"
+       quotearg_buffer:
+       "(simple)", "(\\0 \\t\\n'\"\\033??/\\\\)", "(a:b)"
+       quotearg:
+       "(simple)", "(\\0 \\t\\n'\"\\033??/\\\\)", "(a:b)"
+       quotearg_colon:
+       "(simple)", "(\\0 \\t\\n'\"\\033??/\\\\)", "(a\\:b)"
+
+       left_quote = ":" and right_quote = " "
+       quotearg_buffer:
+       ":simple ", ":\\0\\ \\t\\n'\"\\033??/\\\\ ", ":a:b "
+       quotearg:
+       ":simple ", ":\\0\\ \\t\\n'\"\\033??/\\\\ ", ":a:b "
+       quotearg_colon:
+       ":simple ", ":\\0\\ \\t\\n'\"\\033??/\\\\ ", ":a\\:b "
+
+       left_quote = "\"'" and right_quote = "'\""
+       Notice that this is treated as a single level of quotes or two
+       levels where the outer quote need not be escaped within the inner
+       quotes.  For two levels where the outer quote must be escaped
+       within the inner quotes, you must use separate quotearg
+       invocations.
+       quotearg_buffer:
+       "\"'simple'\"", "\"'\\0 \\t\\n\\'\"\\033??/\\\\'\"", "\"'a:b'\""
+       quotearg:
+       "\"'simple'\"", "\"'\\0 \\t\\n\\'\"\\033??/\\\\'\"", "\"'a:b'\""
+       quotearg_colon:
+       "\"'simple'\"", "\"'\\0 \\t\\n\\'\"\\033??/\\\\'\"", "\"'a\\:b'\""
+    */
+    custom_quoting_style
+  };
+
+/* Flags for use in set_quoting_flags.  */
+enum quoting_flags
+  {
+    /* Always elide null bytes from styles that do not quote them,
+       even when the length of the result is available to the
+       caller.  */
+    QA_ELIDE_NULL_BYTES = 0x01,
+
+    /* Omit the surrounding quote characters if no escaped characters
+       are encountered.  Note that if no other character needs
+       escaping, then neither does the escape character.  */
+    QA_ELIDE_OUTER_QUOTES = 0x02,
+
+    /* In the c_quoting_style and c_maybe_quoting_style, split ANSI
+       trigraph sequences into concatenated strings (for example,
+       "?""?/" rather than "??/", which could be confused with
+       "\\").  */
+    QA_SPLIT_TRIGRAPHS = 0x04
+  };
+
+/* For now, --quoting-style=literal is the default, but this may change.  */
+# ifndef DEFAULT_QUOTING_STYLE
+#  define DEFAULT_QUOTING_STYLE literal_quoting_style
+# endif
+
+/* Names of quoting styles and their corresponding values.  */
+extern char const *const quoting_style_args[];
+extern enum quoting_style const quoting_style_vals[];
+
+struct quoting_options;
+
+/* The functions listed below set and use a hidden variable
+   that contains the default quoting style options.  */
+
+/* Allocate a new set of quoting options, with contents initially identical
+   to O if O is not null, or to the default if O is null.
+   It is the caller's responsibility to free the result.  */
+struct quoting_options *clone_quoting_options (struct quoting_options *o)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+
+/* Get the value of O's quoting style.  If O is null, use the default.  */
+enum quoting_style get_quoting_style (struct quoting_options const *o);
+
+/* In O (or in the default if O is null),
+   set the value of the quoting style to S.  */
+void set_quoting_style (struct quoting_options *o, enum quoting_style s);
+
+/* In O (or in the default if O is null),
+   set the value of the quoting options for character C to I.
+   Return the old value.  Currently, the only values defined for I are
+   0 (the default) and 1 (which means to quote the character even if
+   it would not otherwise be quoted).  C must never be a digit or a
+   letter that has special meaning after a backslash (for example, "\t"
+   for tab).  */
+int set_char_quoting (struct quoting_options *o, char c, int i);
+
+/* In O (or in the default if O is null),
+   set the value of the quoting options flag to I, which can be a
+   bitwise combination of enum quoting_flags, or 0 for default
+   behavior.  Return the old value.  */
+int set_quoting_flags (struct quoting_options *o, int i);
+
+/* In O (or in the default if O is null),
+   set the value of the quoting style to custom_quoting_style,
+   set the left quote to LEFT_QUOTE, and set the right quote to
+   RIGHT_QUOTE.  Each of LEFT_QUOTE and RIGHT_QUOTE must be
+   null-terminated and can be the empty string.  Because backslashes are
+   used for escaping, it does not make sense for RIGHT_QUOTE to contain
+   a backslash.  RIGHT_QUOTE must not begin with a digit or a letter
+   that has special meaning after a backslash (for example, "\t" for
+   tab).  */
+void set_custom_quoting (struct quoting_options *o,
+                         char const *left_quote,
+                         char const *right_quote);
+
+/* Place into buffer BUFFER (of size BUFFERSIZE) a quoted version of
+   argument ARG (of size ARGSIZE), using O to control quoting.
+   If O is null, use the default.
+   Terminate the output with a null character, and return the written
+   size of the output, not counting the terminating null.
+   If BUFFERSIZE is too small to store the output string, return the
+   value that would have been returned had BUFFERSIZE been large enough.
+   If ARGSIZE is -1, use the string length of the argument for ARGSIZE.
+   On output, BUFFER might contain embedded null bytes if ARGSIZE was
+   not -1, the style of O does not use backslash escapes, and the
+   flags of O do not request elision of null bytes.*/
+size_t quotearg_buffer (char *restrict buffer, size_t buffersize,
+                        char const *arg, size_t argsize,
+                        struct quoting_options const *o);
+
+/* Like quotearg_buffer, except return the result in a newly allocated
+   buffer.  It is the caller's responsibility to free the result.  The
+   result will not contain embedded null bytes.  */
+char *quotearg_alloc (char const *arg, size_t argsize,
+                      struct quoting_options const *o)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+
+/* Like quotearg_alloc, except that the length of the result,
+   excluding the terminating null byte, is stored into SIZE if it is
+   non-NULL.  The result might contain embedded null bytes if ARGSIZE
+   was not -1, SIZE was not NULL, the style of O does not use
+   backslash escapes, and the flags of O do not request elision of
+   null bytes.*/
+char *quotearg_alloc_mem (char const *arg, size_t argsize,
+                          size_t *size, struct quoting_options const *o)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+
+/* Use storage slot N to return a quoted version of the string ARG.
+   Use the default quoting options.
+   The returned value points to static storage that can be
+   reused by the next call to this function with the same value of N.
+   N must be nonnegative.  The output of all functions in the
+   quotearg_n family are guaranteed to not contain embedded null
+   bytes.*/
+char *quotearg_n (int n, char const *arg);
+
+/* Equivalent to quotearg_n (0, ARG).  */
+char *quotearg (char const *arg);
+
+/* Use storage slot N to return a quoted version of the argument ARG
+   of size ARGSIZE.  This is like quotearg_n (N, ARG), except it can
+   quote null bytes.  */
+char *quotearg_n_mem (int n, char const *arg, size_t argsize);
+
+/* Equivalent to quotearg_n_mem (0, ARG, ARGSIZE).  */
+char *quotearg_mem (char const *arg, size_t argsize);
+
+/* Use style S and storage slot N to return a quoted version of the string ARG.
+   This is like quotearg_n (N, ARG), except that it uses S with no other
+   options to specify the quoting method.  */
+char *quotearg_n_style (int n, enum quoting_style s, char const *arg);
+
+/* Use style S and storage slot N to return a quoted version of the
+   argument ARG of size ARGSIZE.  This is like quotearg_n_style
+   (N, S, ARG), except it can quote null bytes.  */
+char *quotearg_n_style_mem (int n, enum quoting_style s,
+                            char const *arg, size_t argsize);
+
+/* Equivalent to quotearg_n_style (0, S, ARG).  */
+char *quotearg_style (enum quoting_style s, char const *arg);
+
+/* Equivalent to quotearg_n_style_mem (0, S, ARG, ARGSIZE).  */
+char *quotearg_style_mem (enum quoting_style s,
+                          char const *arg, size_t argsize);
+
+/* Like quotearg (ARG), except also quote any instances of CH.
+   See set_char_quoting for a description of acceptable CH values.  */
+char *quotearg_char (char const *arg, char ch);
+
+/* Like quotearg_char (ARG, CH), except it can quote null bytes.  */
+char *quotearg_char_mem (char const *arg, size_t argsize, char ch);
+
+/* Equivalent to quotearg_char (ARG, ':').  */
+char *quotearg_colon (char const *arg);
+
+/* Like quotearg_colon (ARG), except it can quote null bytes.  */
+char *quotearg_colon_mem (char const *arg, size_t argsize);
+
+/* Like quotearg_n_style, except with ':' quoting enabled.  */
+char *quotearg_n_style_colon (int n, enum quoting_style s, char const *arg);
+
+/* Like quotearg_n_style (N, S, ARG) but with S as custom_quoting_style
+   with left quote as LEFT_QUOTE and right quote as RIGHT_QUOTE.  See
+   set_custom_quoting for a description of acceptable LEFT_QUOTE and
+   RIGHT_QUOTE values.  */
+char *quotearg_n_custom (int n, char const *left_quote,
+                         char const *right_quote, char const *arg);
+
+/* Like quotearg_n_custom (N, LEFT_QUOTE, RIGHT_QUOTE, ARG) except it
+   can quote null bytes.  */
+char *quotearg_n_custom_mem (int n, char const *left_quote,
+                             char const *right_quote,
+                             char const *arg, size_t argsize);
+
+/* Equivalent to quotearg_n_custom (0, LEFT_QUOTE, RIGHT_QUOTE, ARG).  */
+char *quotearg_custom (char const *left_quote, char const *right_quote,
+                       char const *arg);
+
+/* Equivalent to quotearg_n_custom_mem (0, LEFT_QUOTE, RIGHT_QUOTE, ARG,
+                                        ARGSIZE).  */
+char *quotearg_custom_mem (char const *left_quote,
+                           char const *right_quote,
+                           char const *arg, size_t argsize);
+
+/* Free any dynamically allocated memory.  */
+void quotearg_free (void);
+
+#endif /* !QUOTEARG_H_ */
diff --git a/src/grep/lib/raise.c b/src/grep/lib/raise.c
new file mode 100644
index 0000000..37c100d
--- /dev/null
+++ b/src/grep/lib/raise.c
@@ -0,0 +1,83 @@
+/* Provide a non-threads replacement for the POSIX raise function.
+
+   Copyright (C) 2002-2003, 2005-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering and Bruno Haible */
+
+#include <config.h>
+
+/* Specification.  */
+#include <signal.h>
+
+#if HAVE_RAISE
+/* Native Windows platform.  */
+
+# include <errno.h>
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+#  include "msvc-inval.h"
+# endif
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+/* Forward declaration.  */
+static int raise_nothrow (int sig);
+# else
+#  define raise_nothrow raise
+# endif
+
+#else
+/* An old Unix platform.  */
+
+# include <unistd.h>
+
+#endif
+
+int
+raise (int sig)
+#undef raise
+{
+#if GNULIB_defined_signal_blocking && GNULIB_defined_SIGPIPE
+  if (sig == SIGPIPE)
+    return _gl_raise_SIGPIPE ();
+#endif
+
+#if HAVE_RAISE
+  return raise_nothrow (sig);
+#else
+  return kill (getpid (), sig);
+#endif
+}
+
+#if HAVE_RAISE && HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static int
+raise_nothrow (int sig)
+{
+  int result;
+
+  TRY_MSVC_INVAL
+    {
+      result = raise (sig);
+    }
+  CATCH_MSVC_INVAL
+    {
+      result = -1;
+      errno = EINVAL;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+#endif
diff --git a/src/grep/lib/rawmemchr.c b/src/grep/lib/rawmemchr.c
new file mode 100644
index 0000000..896d435
--- /dev/null
+++ b/src/grep/lib/rawmemchr.c
@@ -0,0 +1,141 @@
+/* Searching in a string.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <string.h>
+
+/* A function definition is only needed if HAVE_RAWMEMCHR is not defined.  */
+#if !HAVE_RAWMEMCHR
+
+/* Find the first occurrence of C in S.  */
+void *
+rawmemchr (const void *s, int c_in)
+{
+  /* On 32-bit hardware, choosing longword to be a 32-bit unsigned
+     long instead of a 64-bit uintmax_t tends to give better
+     performance.  On 64-bit hardware, unsigned long is generally 64
+     bits already.  Change this typedef to experiment with
+     performance.  */
+  typedef unsigned long int longword;
+
+  const unsigned char *char_ptr;
+  const longword *longword_ptr;
+  longword repeated_one;
+  longword repeated_c;
+  unsigned char c;
+
+  c = (unsigned char) c_in;
+
+  /* Handle the first few bytes by reading one byte at a time.
+     Do this until CHAR_PTR is aligned on a longword boundary.  */
+  for (char_ptr = (const unsigned char *) s;
+       (size_t) char_ptr % sizeof (longword) != 0;
+       ++char_ptr)
+    if (*char_ptr == c)
+      return (void *) char_ptr;
+
+  longword_ptr = (const longword *) char_ptr;
+
+  /* All these elucidatory comments refer to 4-byte longwords,
+     but the theory applies equally well to any size longwords.  */
+
+  /* Compute auxiliary longword values:
+     repeated_one is a value which has a 1 in every byte.
+     repeated_c has c in every byte.  */
+  repeated_one = 0x01010101;
+  repeated_c = c | (c << 8);
+  repeated_c |= repeated_c << 16;
+  if (0xffffffffU < (longword) -1)
+    {
+      repeated_one |= repeated_one << 31 << 1;
+      repeated_c |= repeated_c << 31 << 1;
+      if (8 < sizeof (longword))
+        {
+          size_t i;
+
+          for (i = 64; i < sizeof (longword) * 8; i *= 2)
+            {
+              repeated_one |= repeated_one << i;
+              repeated_c |= repeated_c << i;
+            }
+        }
+    }
+
+  /* Instead of the traditional loop which tests each byte, we will
+     test a longword at a time.  The tricky part is testing if *any of
+     the four* bytes in the longword in question are equal to NUL or
+     c.  We first use an xor with repeated_c.  This reduces the task
+     to testing whether *any of the four* bytes in longword1 is zero.
+
+     We compute tmp =
+       ((longword1 - repeated_one) & ~longword1) & (repeated_one << 7).
+     That is, we perform the following operations:
+       1. Subtract repeated_one.
+       2. & ~longword1.
+       3. & a mask consisting of 0x80 in every byte.
+     Consider what happens in each byte:
+       - If a byte of longword1 is zero, step 1 and 2 transform it into 0xff,
+         and step 3 transforms it into 0x80.  A carry can also be propagated
+         to more significant bytes.
+       - If a byte of longword1 is nonzero, let its lowest 1 bit be at
+         position k (0 <= k <= 7); so the lowest k bits are 0.  After step 1,
+         the byte ends in a single bit of value 0 and k bits of value 1.
+         After step 2, the result is just k bits of value 1: 2^k - 1.  After
+         step 3, the result is 0.  And no carry is produced.
+     So, if longword1 has only non-zero bytes, tmp is zero.
+     Whereas if longword1 has a zero byte, call j the position of the least
+     significant zero byte.  Then the result has a zero at positions 0, ...,
+     j-1 and a 0x80 at position j.  We cannot predict the result at the more
+     significant bytes (positions j+1..3), but it does not matter since we
+     already have a non-zero bit at position 8*j+7.
+
+     The test whether any byte in longword1 is zero is equivalent
+     to testing whether tmp is nonzero.
+
+     This test can read beyond the end of a string, depending on where
+     C_IN is encountered.  However, this is considered safe since the
+     initialization phase ensured that the read will be aligned,
+     therefore, the read will not cross page boundaries and will not
+     cause a fault.  */
+
+  while (1)
+    {
+      longword longword1 = *longword_ptr ^ repeated_c;
+
+      if ((((longword1 - repeated_one) & ~longword1)
+           & (repeated_one << 7)) != 0)
+        break;
+      longword_ptr++;
+    }
+
+  char_ptr = (const unsigned char *) longword_ptr;
+
+  /* At this point, we know that one of the sizeof (longword) bytes
+     starting at char_ptr is == c.  On little-endian machines, we
+     could determine the first such byte without any further memory
+     accesses, just by looking at the tmp result from the last loop
+     iteration.  But this does not work on big-endian machines.
+     Choose code that works in both cases.  */
+
+  char_ptr = (unsigned char *) longword_ptr;
+  while (*char_ptr != c)
+    char_ptr++;
+  return (void *) char_ptr;
+}
+
+#endif
diff --git a/src/grep/lib/rawmemchr.valgrind b/src/grep/lib/rawmemchr.valgrind
new file mode 100644
index 0000000..d489c32
--- /dev/null
+++ b/src/grep/lib/rawmemchr.valgrind
@@ -0,0 +1,28 @@
+# Suppress a valgrind message about use of uninitialized memory in rawmemchr().
+
+# Copyright (C) 2008-2021 Free Software Foundation, Inc.
+#
+# This file is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# This use is OK because it provides only a speedup.
+{
+    rawmemchr-value4
+    Memcheck:Value4
+    fun:rawmemchr
+}
+{
+    rawmemchr-value8
+    Memcheck:Value8
+    fun:rawmemchr
+}
diff --git a/src/grep/lib/read.c b/src/grep/lib/read.c
new file mode 100644
index 0000000..840d9ed
--- /dev/null
+++ b/src/grep/lib/read.c
@@ -0,0 +1,95 @@
+/* POSIX compatible read() function.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+
+# include <errno.h>
+# include <io.h>
+
+# define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+# include <windows.h>
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+#  include "msvc-inval.h"
+# endif
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+
+/* Don't assume that UNICODE is not defined.  */
+# undef GetNamedPipeHandleState
+# define GetNamedPipeHandleState GetNamedPipeHandleStateA
+
+# undef read
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static ssize_t
+read_nothrow (int fd, void *buf, size_t count)
+{
+  ssize_t result;
+
+  TRY_MSVC_INVAL
+    {
+      result = _read (fd, buf, count);
+    }
+  CATCH_MSVC_INVAL
+    {
+      result = -1;
+      errno = EBADF;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+# else
+#  define read_nothrow _read
+# endif
+
+ssize_t
+rpl_read (int fd, void *buf, size_t count)
+{
+  ssize_t ret = read_nothrow (fd, buf, count);
+
+# if GNULIB_NONBLOCKING
+  if (ret < 0
+      && GetLastError () == ERROR_NO_DATA)
+    {
+      HANDLE h = (HANDLE) _get_osfhandle (fd);
+      if (GetFileType (h) == FILE_TYPE_PIPE)
+        {
+          /* h is a pipe or socket.  */
+          DWORD state;
+          if (GetNamedPipeHandleState (h, &state, NULL, NULL, NULL, NULL, 0)
+              && (state & PIPE_NOWAIT) != 0)
+            /* h is a pipe in non-blocking mode.
+               Change errno from EINVAL to EAGAIN.  */
+            errno = EAGAIN;
+        }
+    }
+# endif
+
+  return ret;
+}
+
+#endif
diff --git a/src/grep/lib/readdir.c b/src/grep/lib/readdir.c
new file mode 100644
index 0000000..9e8e1c3
--- /dev/null
+++ b/src/grep/lib/readdir.c
@@ -0,0 +1,102 @@
+/* Read the next entry of a directory.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <dirent.h>
+
+#include <errno.h>
+#include <stddef.h>
+
+#include "dirent-private.h"
+
+/* Don't assume that UNICODE is not defined.  */
+#undef FindNextFile
+#define FindNextFile FindNextFileA
+
+struct dirent *
+readdir (DIR *dirp)
+{
+  char type;
+  struct dirent *result;
+
+  /* There is no need to add code to produce entries for "." and "..".
+     According to the POSIX:2008 section "4.12 Pathname Resolution"
+     <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html>
+     "." and ".." are syntactic entities.
+     POSIX also says:
+       "If entries for dot or dot-dot exist, one entry shall be returned
+        for dot and one entry shall be returned for dot-dot; otherwise,
+        they shall not be returned."  */
+
+  switch (dirp->status)
+    {
+    case -2:
+      /* End of directory already reached.  */
+      return NULL;
+    case -1:
+      break;
+    case 0:
+      if (!FindNextFile (dirp->current, &dirp->entry))
+        {
+          switch (GetLastError ())
+            {
+            case ERROR_NO_MORE_FILES:
+              dirp->status = -2;
+              return NULL;
+            default:
+              errno = EIO;
+              return NULL;
+            }
+        }
+      break;
+    default:
+      errno = dirp->status;
+      return NULL;
+    }
+
+  dirp->status = 0;
+
+  if (dirp->entry.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+    type = DT_DIR;
+  else if (dirp->entry.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
+    type = DT_LNK;
+  else if ((dirp->entry.dwFileAttributes
+            & ~(FILE_ATTRIBUTE_READONLY
+                | FILE_ATTRIBUTE_HIDDEN
+                | FILE_ATTRIBUTE_SYSTEM
+                | FILE_ATTRIBUTE_ARCHIVE
+                | FILE_ATTRIBUTE_NORMAL
+                | FILE_ATTRIBUTE_TEMPORARY
+                | FILE_ATTRIBUTE_SPARSE_FILE
+                | FILE_ATTRIBUTE_COMPRESSED
+                | FILE_ATTRIBUTE_NOT_CONTENT_INDEXED
+                | FILE_ATTRIBUTE_ENCRYPTED)) == 0)
+    /* Devices like COM1, LPT1, NUL would also have the attributes 0x20 but
+       they cannot occur here.  */
+    type = DT_REG;
+  else
+    type = DT_UNKNOWN;
+
+  /* Reuse the memory of dirp->entry for the result.  */
+  result =
+    (struct dirent *)
+    ((char *) dirp->entry.cFileName - offsetof (struct dirent, d_name[0]));
+  result->d_type = type;
+
+  return result;
+}
diff --git a/src/grep/lib/realloc.c b/src/grep/lib/realloc.c
new file mode 100644
index 0000000..af03f0c
--- /dev/null
+++ b/src/grep/lib/realloc.c
@@ -0,0 +1,63 @@
+/* realloc() function that is glibc compatible.
+
+   Copyright (C) 1997, 2003-2004, 2006-2007, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering and Bruno Haible */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include <errno.h>
+
+#include "xalloc-oversized.h"
+
+/* Call the system's realloc below.  This file does not define
+   _GL_USE_STDLIB_ALLOC because it needs Gnulib's malloc if present.  */
+#undef realloc
+
+/* Change the size of an allocated block of memory P to N bytes,
+   with error checking.  If P is NULL, use malloc.  Otherwise if N is zero,
+   free P and return NULL.  */
+
+void *
+rpl_realloc (void *p, size_t n)
+{
+  if (p == NULL)
+    return malloc (n);
+
+  if (n == 0)
+    {
+      free (p);
+      return NULL;
+    }
+
+  if (xalloc_oversized (n, 1))
+    {
+      errno = ENOMEM;
+      return NULL;
+    }
+
+  void *result = realloc (p, n);
+
+#if !HAVE_MALLOC_POSIX
+  if (result == NULL)
+    errno = ENOMEM;
+#endif
+
+  return result;
+}
diff --git a/src/grep/lib/reallocarray.c b/src/grep/lib/reallocarray.c
new file mode 100644
index 0000000..1fb2f3c
--- /dev/null
+++ b/src/grep/lib/reallocarray.c
@@ -0,0 +1,39 @@
+/* reallocarray function that is glibc compatible.
+
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Darshit Shah */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <errno.h>
+
+#include "intprops.h"
+
+void *
+reallocarray (void *ptr, size_t nmemb, size_t size)
+{
+  size_t nbytes;
+  if (INT_MULTIPLY_WRAPV (nmemb, size, &nbytes))
+    {
+      errno = ENOMEM;
+      return NULL;
+    }
+
+  /* Rely on the semantics of GNU realloc.  */
+  return realloc (ptr, nbytes);
+}
diff --git a/src/grep/lib/regcomp.c b/src/grep/lib/regcomp.c
new file mode 100644
index 0000000..02b0e70
--- /dev/null
+++ b/src/grep/lib/regcomp.c
@@ -0,0 +1,3922 @@
+/* Extended regular expression matching and search library.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifdef _LIBC
+# include <locale/weight.h>
+#endif
+
+static reg_errcode_t re_compile_internal (regex_t *preg, const char * pattern,
+					  size_t length, reg_syntax_t syntax);
+static void re_compile_fastmap_iter (regex_t *bufp,
+				     const re_dfastate_t *init_state,
+				     char *fastmap);
+static reg_errcode_t init_dfa (re_dfa_t *dfa, size_t pat_len);
+#ifdef RE_ENABLE_I18N
+static void free_charset (re_charset_t *cset);
+#endif /* RE_ENABLE_I18N */
+static void free_workarea_compile (regex_t *preg);
+static reg_errcode_t create_initial_state (re_dfa_t *dfa);
+#ifdef RE_ENABLE_I18N
+static void optimize_utf8 (re_dfa_t *dfa);
+#endif
+static reg_errcode_t analyze (regex_t *preg);
+static reg_errcode_t preorder (bin_tree_t *root,
+			       reg_errcode_t (fn (void *, bin_tree_t *)),
+			       void *extra);
+static reg_errcode_t postorder (bin_tree_t *root,
+				reg_errcode_t (fn (void *, bin_tree_t *)),
+				void *extra);
+static reg_errcode_t optimize_subexps (void *extra, bin_tree_t *node);
+static reg_errcode_t lower_subexps (void *extra, bin_tree_t *node);
+static bin_tree_t *lower_subexp (reg_errcode_t *err, regex_t *preg,
+				 bin_tree_t *node);
+static reg_errcode_t calc_first (void *extra, bin_tree_t *node);
+static reg_errcode_t calc_next (void *extra, bin_tree_t *node);
+static reg_errcode_t link_nfa_nodes (void *extra, bin_tree_t *node);
+static Idx duplicate_node (re_dfa_t *dfa, Idx org_idx, unsigned int constraint);
+static Idx search_duplicated_node (const re_dfa_t *dfa, Idx org_node,
+				   unsigned int constraint);
+static reg_errcode_t calc_eclosure (re_dfa_t *dfa);
+static reg_errcode_t calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa,
+					 Idx node, bool root);
+static reg_errcode_t calc_inveclosure (re_dfa_t *dfa);
+static Idx fetch_number (re_string_t *input, re_token_t *token,
+			 reg_syntax_t syntax);
+static int peek_token (re_token_t *token, re_string_t *input,
+			reg_syntax_t syntax);
+static bin_tree_t *parse (re_string_t *regexp, regex_t *preg,
+			  reg_syntax_t syntax, reg_errcode_t *err);
+static bin_tree_t *parse_reg_exp (re_string_t *regexp, regex_t *preg,
+				  re_token_t *token, reg_syntax_t syntax,
+				  Idx nest, reg_errcode_t *err);
+static bin_tree_t *parse_branch (re_string_t *regexp, regex_t *preg,
+				 re_token_t *token, reg_syntax_t syntax,
+				 Idx nest, reg_errcode_t *err);
+static bin_tree_t *parse_expression (re_string_t *regexp, regex_t *preg,
+				     re_token_t *token, reg_syntax_t syntax,
+				     Idx nest, reg_errcode_t *err);
+static bin_tree_t *parse_sub_exp (re_string_t *regexp, regex_t *preg,
+				  re_token_t *token, reg_syntax_t syntax,
+				  Idx nest, reg_errcode_t *err);
+static bin_tree_t *parse_dup_op (bin_tree_t *dup_elem, re_string_t *regexp,
+				 re_dfa_t *dfa, re_token_t *token,
+				 reg_syntax_t syntax, reg_errcode_t *err);
+static bin_tree_t *parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa,
+				      re_token_t *token, reg_syntax_t syntax,
+				      reg_errcode_t *err);
+static reg_errcode_t parse_bracket_element (bracket_elem_t *elem,
+					    re_string_t *regexp,
+					    re_token_t *token, int token_len,
+					    re_dfa_t *dfa,
+					    reg_syntax_t syntax,
+					    bool accept_hyphen);
+static reg_errcode_t parse_bracket_symbol (bracket_elem_t *elem,
+					  re_string_t *regexp,
+					  re_token_t *token);
+#ifdef RE_ENABLE_I18N
+static reg_errcode_t build_equiv_class (bitset_t sbcset,
+					re_charset_t *mbcset,
+					Idx *equiv_class_alloc,
+					const unsigned char *name);
+static reg_errcode_t build_charclass (RE_TRANSLATE_TYPE trans,
+				      bitset_t sbcset,
+				      re_charset_t *mbcset,
+				      Idx *char_class_alloc,
+				      const char *class_name,
+				      reg_syntax_t syntax);
+#else  /* not RE_ENABLE_I18N */
+static reg_errcode_t build_equiv_class (bitset_t sbcset,
+					const unsigned char *name);
+static reg_errcode_t build_charclass (RE_TRANSLATE_TYPE trans,
+				      bitset_t sbcset,
+				      const char *class_name,
+				      reg_syntax_t syntax);
+#endif /* not RE_ENABLE_I18N */
+static bin_tree_t *build_charclass_op (re_dfa_t *dfa,
+				       RE_TRANSLATE_TYPE trans,
+				       const char *class_name,
+				       const char *extra,
+				       bool non_match, reg_errcode_t *err);
+static bin_tree_t *create_tree (re_dfa_t *dfa,
+				bin_tree_t *left, bin_tree_t *right,
+				re_token_type_t type);
+static bin_tree_t *create_token_tree (re_dfa_t *dfa,
+				      bin_tree_t *left, bin_tree_t *right,
+				      const re_token_t *token);
+static bin_tree_t *duplicate_tree (const bin_tree_t *src, re_dfa_t *dfa);
+static void free_token (re_token_t *node);
+static reg_errcode_t free_tree (void *extra, bin_tree_t *node);
+static reg_errcode_t mark_opt_subexp (void *extra, bin_tree_t *node);
+
+/* This table gives an error message for each of the error codes listed
+   in regex.h.  Obviously the order here has to be same as there.
+   POSIX doesn't require that we do anything for REG_NOERROR,
+   but why not be nice?  */
+
+static const char __re_error_msgid[] =
+  {
+#define REG_NOERROR_IDX	0
+    gettext_noop ("Success")	/* REG_NOERROR */
+    "\0"
+#define REG_NOMATCH_IDX (REG_NOERROR_IDX + sizeof "Success")
+    gettext_noop ("No match")	/* REG_NOMATCH */
+    "\0"
+#define REG_BADPAT_IDX	(REG_NOMATCH_IDX + sizeof "No match")
+    gettext_noop ("Invalid regular expression") /* REG_BADPAT */
+    "\0"
+#define REG_ECOLLATE_IDX (REG_BADPAT_IDX + sizeof "Invalid regular expression")
+    gettext_noop ("Invalid collation character") /* REG_ECOLLATE */
+    "\0"
+#define REG_ECTYPE_IDX	(REG_ECOLLATE_IDX + sizeof "Invalid collation character")
+    gettext_noop ("Invalid character class name") /* REG_ECTYPE */
+    "\0"
+#define REG_EESCAPE_IDX	(REG_ECTYPE_IDX + sizeof "Invalid character class name")
+    gettext_noop ("Trailing backslash") /* REG_EESCAPE */
+    "\0"
+#define REG_ESUBREG_IDX	(REG_EESCAPE_IDX + sizeof "Trailing backslash")
+    gettext_noop ("Invalid back reference") /* REG_ESUBREG */
+    "\0"
+#define REG_EBRACK_IDX	(REG_ESUBREG_IDX + sizeof "Invalid back reference")
+    gettext_noop ("Unmatched [, [^, [:, [., or [=")	/* REG_EBRACK */
+    "\0"
+#define REG_EPAREN_IDX	(REG_EBRACK_IDX + sizeof "Unmatched [, [^, [:, [., or [=")
+    gettext_noop ("Unmatched ( or \\(") /* REG_EPAREN */
+    "\0"
+#define REG_EBRACE_IDX	(REG_EPAREN_IDX + sizeof "Unmatched ( or \\(")
+    gettext_noop ("Unmatched \\{") /* REG_EBRACE */
+    "\0"
+#define REG_BADBR_IDX	(REG_EBRACE_IDX + sizeof "Unmatched \\{")
+    gettext_noop ("Invalid content of \\{\\}") /* REG_BADBR */
+    "\0"
+#define REG_ERANGE_IDX	(REG_BADBR_IDX + sizeof "Invalid content of \\{\\}")
+    gettext_noop ("Invalid range end")	/* REG_ERANGE */
+    "\0"
+#define REG_ESPACE_IDX	(REG_ERANGE_IDX + sizeof "Invalid range end")
+    gettext_noop ("Memory exhausted") /* REG_ESPACE */
+    "\0"
+#define REG_BADRPT_IDX	(REG_ESPACE_IDX + sizeof "Memory exhausted")
+    gettext_noop ("Invalid preceding regular expression") /* REG_BADRPT */
+    "\0"
+#define REG_EEND_IDX	(REG_BADRPT_IDX + sizeof "Invalid preceding regular expression")
+    gettext_noop ("Premature end of regular expression") /* REG_EEND */
+    "\0"
+#define REG_ESIZE_IDX	(REG_EEND_IDX + sizeof "Premature end of regular expression")
+    gettext_noop ("Regular expression too big") /* REG_ESIZE */
+    "\0"
+#define REG_ERPAREN_IDX	(REG_ESIZE_IDX + sizeof "Regular expression too big")
+    gettext_noop ("Unmatched ) or \\)") /* REG_ERPAREN */
+  };
+
+static const size_t __re_error_msgid_idx[] =
+  {
+    REG_NOERROR_IDX,
+    REG_NOMATCH_IDX,
+    REG_BADPAT_IDX,
+    REG_ECOLLATE_IDX,
+    REG_ECTYPE_IDX,
+    REG_EESCAPE_IDX,
+    REG_ESUBREG_IDX,
+    REG_EBRACK_IDX,
+    REG_EPAREN_IDX,
+    REG_EBRACE_IDX,
+    REG_BADBR_IDX,
+    REG_ERANGE_IDX,
+    REG_ESPACE_IDX,
+    REG_BADRPT_IDX,
+    REG_EEND_IDX,
+    REG_ESIZE_IDX,
+    REG_ERPAREN_IDX
+  };
+
+/* Entry points for GNU code.  */
+
+/* re_compile_pattern is the GNU regular expression compiler: it
+   compiles PATTERN (of length LENGTH) and puts the result in BUFP.
+   Returns 0 if the pattern was valid, otherwise an error string.
+
+   Assumes the 'allocated' (and perhaps 'buffer') and 'translate' fields
+   are set in BUFP on entry.  */
+
+const char *
+re_compile_pattern (const char *pattern, size_t length,
+		    struct re_pattern_buffer *bufp)
+{
+  reg_errcode_t ret;
+
+  /* And GNU code determines whether or not to get register information
+     by passing null for the REGS argument to re_match, etc., not by
+     setting no_sub, unless RE_NO_SUB is set.  */
+  bufp->no_sub = !!(re_syntax_options & RE_NO_SUB);
+
+  /* Match anchors at newline.  */
+  bufp->newline_anchor = 1;
+
+  ret = re_compile_internal (bufp, pattern, length, re_syntax_options);
+
+  if (!ret)
+    return NULL;
+  return gettext (__re_error_msgid + __re_error_msgid_idx[(int) ret]);
+}
+weak_alias (__re_compile_pattern, re_compile_pattern)
+
+/* Set by 're_set_syntax' to the current regexp syntax to recognize.  Can
+   also be assigned to arbitrarily: each pattern buffer stores its own
+   syntax, so it can be changed between regex compilations.  */
+/* This has no initializer because initialized variables in Emacs
+   become read-only after dumping.  */
+reg_syntax_t re_syntax_options;
+
+
+/* Specify the precise syntax of regexps for compilation.  This provides
+   for compatibility for various utilities which historically have
+   different, incompatible syntaxes.
+
+   The argument SYNTAX is a bit mask comprised of the various bits
+   defined in regex.h.  We return the old syntax.  */
+
+reg_syntax_t
+re_set_syntax (reg_syntax_t syntax)
+{
+  reg_syntax_t ret = re_syntax_options;
+
+  re_syntax_options = syntax;
+  return ret;
+}
+weak_alias (__re_set_syntax, re_set_syntax)
+
+int
+re_compile_fastmap (struct re_pattern_buffer *bufp)
+{
+  re_dfa_t *dfa = bufp->buffer;
+  char *fastmap = bufp->fastmap;
+
+  memset (fastmap, '\0', sizeof (char) * SBC_MAX);
+  re_compile_fastmap_iter (bufp, dfa->init_state, fastmap);
+  if (dfa->init_state != dfa->init_state_word)
+    re_compile_fastmap_iter (bufp, dfa->init_state_word, fastmap);
+  if (dfa->init_state != dfa->init_state_nl)
+    re_compile_fastmap_iter (bufp, dfa->init_state_nl, fastmap);
+  if (dfa->init_state != dfa->init_state_begbuf)
+    re_compile_fastmap_iter (bufp, dfa->init_state_begbuf, fastmap);
+  bufp->fastmap_accurate = 1;
+  return 0;
+}
+weak_alias (__re_compile_fastmap, re_compile_fastmap)
+
+static inline void
+__attribute__ ((always_inline))
+re_set_fastmap (char *fastmap, bool icase, int ch)
+{
+  fastmap[ch] = 1;
+  if (icase)
+    fastmap[tolower (ch)] = 1;
+}
+
+/* Helper function for re_compile_fastmap.
+   Compile fastmap for the initial_state INIT_STATE.  */
+
+static void
+re_compile_fastmap_iter (regex_t *bufp, const re_dfastate_t *init_state,
+			 char *fastmap)
+{
+  re_dfa_t *dfa = bufp->buffer;
+  Idx node_cnt;
+  bool icase = (dfa->mb_cur_max == 1 && (bufp->syntax & RE_ICASE));
+  for (node_cnt = 0; node_cnt < init_state->nodes.nelem; ++node_cnt)
+    {
+      Idx node = init_state->nodes.elems[node_cnt];
+      re_token_type_t type = dfa->nodes[node].type;
+
+      if (type == CHARACTER)
+	{
+	  re_set_fastmap (fastmap, icase, dfa->nodes[node].opr.c);
+#ifdef RE_ENABLE_I18N
+	  if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
+	    {
+	      unsigned char buf[MB_LEN_MAX];
+	      unsigned char *p;
+	      wchar_t wc;
+	      mbstate_t state;
+
+	      p = buf;
+	      *p++ = dfa->nodes[node].opr.c;
+	      while (++node < dfa->nodes_len
+		     &&	dfa->nodes[node].type == CHARACTER
+		     && dfa->nodes[node].mb_partial)
+		*p++ = dfa->nodes[node].opr.c;
+	      memset (&state, '\0', sizeof (state));
+	      if (__mbrtowc (&wc, (const char *) buf, p - buf,
+			     &state) == p - buf
+		  && (__wcrtomb ((char *) buf, __towlower (wc), &state)
+		      != (size_t) -1))
+		re_set_fastmap (fastmap, false, buf[0]);
+	    }
+#endif
+	}
+      else if (type == SIMPLE_BRACKET)
+	{
+	  int i, ch;
+	  for (i = 0, ch = 0; i < BITSET_WORDS; ++i)
+	    {
+	      int j;
+	      bitset_word_t w = dfa->nodes[node].opr.sbcset[i];
+	      for (j = 0; j < BITSET_WORD_BITS; ++j, ++ch)
+		if (w & ((bitset_word_t) 1 << j))
+		  re_set_fastmap (fastmap, icase, ch);
+	    }
+	}
+#ifdef RE_ENABLE_I18N
+      else if (type == COMPLEX_BRACKET)
+	{
+	  re_charset_t *cset = dfa->nodes[node].opr.mbcset;
+	  Idx i;
+
+# ifdef _LIBC
+	  /* See if we have to try all bytes which start multiple collation
+	     elements.
+	     e.g. In da_DK, we want to catch 'a' since "aa" is a valid
+		  collation element, and don't catch 'b' since 'b' is
+		  the only collation element which starts from 'b' (and
+		  it is caught by SIMPLE_BRACKET).  */
+	      if (_NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES) != 0
+		  && (cset->ncoll_syms || cset->nranges))
+		{
+		  const int32_t *table = (const int32_t *)
+		    _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
+		  for (i = 0; i < SBC_MAX; ++i)
+		    if (table[i] < 0)
+		      re_set_fastmap (fastmap, icase, i);
+		}
+# endif /* _LIBC */
+
+	  /* See if we have to start the match at all multibyte characters,
+	     i.e. where we would not find an invalid sequence.  This only
+	     applies to multibyte character sets; for single byte character
+	     sets, the SIMPLE_BRACKET again suffices.  */
+	  if (dfa->mb_cur_max > 1
+	      && (cset->nchar_classes || cset->non_match || cset->nranges
+# ifdef _LIBC
+		  || cset->nequiv_classes
+# endif /* _LIBC */
+		 ))
+	    {
+	      unsigned char c = 0;
+	      do
+		{
+		  mbstate_t mbs;
+		  memset (&mbs, 0, sizeof (mbs));
+		  if (__mbrtowc (NULL, (char *) &c, 1, &mbs) == (size_t) -2)
+		    re_set_fastmap (fastmap, false, (int) c);
+		}
+	      while (++c != 0);
+	    }
+
+	  else
+	    {
+	      /* ... Else catch all bytes which can start the mbchars.  */
+	      for (i = 0; i < cset->nmbchars; ++i)
+		{
+		  char buf[256];
+		  mbstate_t state;
+		  memset (&state, '\0', sizeof (state));
+		  if (__wcrtomb (buf, cset->mbchars[i], &state) != (size_t) -1)
+		    re_set_fastmap (fastmap, icase, *(unsigned char *) buf);
+		  if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
+		    {
+		      if (__wcrtomb (buf, __towlower (cset->mbchars[i]), &state)
+			  != (size_t) -1)
+			re_set_fastmap (fastmap, false, *(unsigned char *) buf);
+		    }
+		}
+	    }
+	}
+#endif /* RE_ENABLE_I18N */
+      else if (type == OP_PERIOD
+#ifdef RE_ENABLE_I18N
+	       || type == OP_UTF8_PERIOD
+#endif /* RE_ENABLE_I18N */
+	       || type == END_OF_RE)
+	{
+	  memset (fastmap, '\1', sizeof (char) * SBC_MAX);
+	  if (type == END_OF_RE)
+	    bufp->can_be_null = 1;
+	  return;
+	}
+    }
+}
+
+/* Entry point for POSIX code.  */
+/* regcomp takes a regular expression as a string and compiles it.
+
+   PREG is a regex_t *.  We do not expect any fields to be initialized,
+   since POSIX says we shouldn't.  Thus, we set
+
+     'buffer' to the compiled pattern;
+     'used' to the length of the compiled pattern;
+     'syntax' to RE_SYNTAX_POSIX_EXTENDED if the
+       REG_EXTENDED bit in CFLAGS is set; otherwise, to
+       RE_SYNTAX_POSIX_BASIC;
+     'newline_anchor' to REG_NEWLINE being set in CFLAGS;
+     'fastmap' to an allocated space for the fastmap;
+     'fastmap_accurate' to zero;
+     're_nsub' to the number of subexpressions in PATTERN.
+
+   PATTERN is the address of the pattern string.
+
+   CFLAGS is a series of bits which affect compilation.
+
+     If REG_EXTENDED is set, we use POSIX extended syntax; otherwise, we
+     use POSIX basic syntax.
+
+     If REG_NEWLINE is set, then . and [^...] don't match newline.
+     Also, regexec will try a match beginning after every newline.
+
+     If REG_ICASE is set, then we considers upper- and lowercase
+     versions of letters to be equivalent when matching.
+
+     If REG_NOSUB is set, then when PREG is passed to regexec, that
+     routine will report only success or failure, and nothing about the
+     registers.
+
+   It returns 0 if it succeeds, nonzero if it doesn't.  (See regex.h for
+   the return codes and their meanings.)  */
+
+int
+regcomp (regex_t *__restrict preg, const char *__restrict pattern, int cflags)
+{
+  reg_errcode_t ret;
+  reg_syntax_t syntax = ((cflags & REG_EXTENDED) ? RE_SYNTAX_POSIX_EXTENDED
+			 : RE_SYNTAX_POSIX_BASIC);
+
+  preg->buffer = NULL;
+  preg->allocated = 0;
+  preg->used = 0;
+
+  /* Try to allocate space for the fastmap.  */
+  preg->fastmap = re_malloc (char, SBC_MAX);
+  if (__glibc_unlikely (preg->fastmap == NULL))
+    return REG_ESPACE;
+
+  syntax |= (cflags & REG_ICASE) ? RE_ICASE : 0;
+
+  /* If REG_NEWLINE is set, newlines are treated differently.  */
+  if (cflags & REG_NEWLINE)
+    { /* REG_NEWLINE implies neither . nor [^...] match newline.  */
+      syntax &= ~RE_DOT_NEWLINE;
+      syntax |= RE_HAT_LISTS_NOT_NEWLINE;
+      /* It also changes the matching behavior.  */
+      preg->newline_anchor = 1;
+    }
+  else
+    preg->newline_anchor = 0;
+  preg->no_sub = !!(cflags & REG_NOSUB);
+  preg->translate = NULL;
+
+  ret = re_compile_internal (preg, pattern, strlen (pattern), syntax);
+
+  /* POSIX doesn't distinguish between an unmatched open-group and an
+     unmatched close-group: both are REG_EPAREN.  */
+  if (ret == REG_ERPAREN)
+    ret = REG_EPAREN;
+
+  /* We have already checked preg->fastmap != NULL.  */
+  if (__glibc_likely (ret == REG_NOERROR))
+    /* Compute the fastmap now, since regexec cannot modify the pattern
+       buffer.  This function never fails in this implementation.  */
+    (void) re_compile_fastmap (preg);
+  else
+    {
+      /* Some error occurred while compiling the expression.  */
+      re_free (preg->fastmap);
+      preg->fastmap = NULL;
+    }
+
+  return (int) ret;
+}
+libc_hidden_def (__regcomp)
+weak_alias (__regcomp, regcomp)
+
+/* Returns a message corresponding to an error code, ERRCODE, returned
+   from either regcomp or regexec.   We don't use PREG here.  */
+
+size_t
+regerror (int errcode, const regex_t *__restrict preg, char *__restrict errbuf,
+	  size_t errbuf_size)
+{
+  const char *msg;
+  size_t msg_size;
+  int nerrcodes = sizeof __re_error_msgid_idx / sizeof __re_error_msgid_idx[0];
+
+  if (__glibc_unlikely (errcode < 0 || errcode >= nerrcodes))
+    /* Only error codes returned by the rest of the code should be passed
+       to this routine.  If we are given anything else, or if other regex
+       code generates an invalid error code, then the program has a bug.
+       Dump core so we can fix it.  */
+    abort ();
+
+  msg = gettext (__re_error_msgid + __re_error_msgid_idx[errcode]);
+
+  msg_size = strlen (msg) + 1; /* Includes the null.  */
+
+  if (__glibc_likely (errbuf_size != 0))
+    {
+      size_t cpy_size = msg_size;
+      if (__glibc_unlikely (msg_size > errbuf_size))
+	{
+	  cpy_size = errbuf_size - 1;
+	  errbuf[cpy_size] = '\0';
+	}
+      memcpy (errbuf, msg, cpy_size);
+    }
+
+  return msg_size;
+}
+weak_alias (__regerror, regerror)
+
+
+#ifdef RE_ENABLE_I18N
+/* This static array is used for the map to single-byte characters when
+   UTF-8 is used.  Otherwise we would allocate memory just to initialize
+   it the same all the time.  UTF-8 is the preferred encoding so this is
+   a worthwhile optimization.  */
+static const bitset_t utf8_sb_map =
+{
+  /* Set the first 128 bits.  */
+# if (defined __GNUC__ || __clang_major__ >= 4) && !defined __STRICT_ANSI__
+  [0 ... 0x80 / BITSET_WORD_BITS - 1] = BITSET_WORD_MAX
+# else
+#  if 4 * BITSET_WORD_BITS < ASCII_CHARS
+#   error "bitset_word_t is narrower than 32 bits"
+#  elif 3 * BITSET_WORD_BITS < ASCII_CHARS
+  BITSET_WORD_MAX, BITSET_WORD_MAX, BITSET_WORD_MAX,
+#  elif 2 * BITSET_WORD_BITS < ASCII_CHARS
+  BITSET_WORD_MAX, BITSET_WORD_MAX,
+#  elif 1 * BITSET_WORD_BITS < ASCII_CHARS
+  BITSET_WORD_MAX,
+#  endif
+  (BITSET_WORD_MAX
+   >> (SBC_MAX % BITSET_WORD_BITS == 0
+       ? 0
+       : BITSET_WORD_BITS - SBC_MAX % BITSET_WORD_BITS))
+# endif
+};
+#endif
+
+
+static void
+free_dfa_content (re_dfa_t *dfa)
+{
+  Idx i, j;
+
+  if (dfa->nodes)
+    for (i = 0; i < dfa->nodes_len; ++i)
+      free_token (dfa->nodes + i);
+  re_free (dfa->nexts);
+  for (i = 0; i < dfa->nodes_len; ++i)
+    {
+      if (dfa->eclosures != NULL)
+	re_node_set_free (dfa->eclosures + i);
+      if (dfa->inveclosures != NULL)
+	re_node_set_free (dfa->inveclosures + i);
+      if (dfa->edests != NULL)
+	re_node_set_free (dfa->edests + i);
+    }
+  re_free (dfa->edests);
+  re_free (dfa->eclosures);
+  re_free (dfa->inveclosures);
+  re_free (dfa->nodes);
+
+  if (dfa->state_table)
+    for (i = 0; i <= dfa->state_hash_mask; ++i)
+      {
+	struct re_state_table_entry *entry = dfa->state_table + i;
+	for (j = 0; j < entry->num; ++j)
+	  {
+	    re_dfastate_t *state = entry->array[j];
+	    free_state (state);
+	  }
+	re_free (entry->array);
+      }
+  re_free (dfa->state_table);
+#ifdef RE_ENABLE_I18N
+  if (dfa->sb_char != utf8_sb_map)
+    re_free (dfa->sb_char);
+#endif
+  re_free (dfa->subexp_map);
+#ifdef DEBUG
+  re_free (dfa->re_str);
+#endif
+
+  re_free (dfa);
+}
+
+
+/* Free dynamically allocated space used by PREG.  */
+
+void
+regfree (regex_t *preg)
+{
+  re_dfa_t *dfa = preg->buffer;
+  if (__glibc_likely (dfa != NULL))
+    {
+      lock_fini (dfa->lock);
+      free_dfa_content (dfa);
+    }
+  preg->buffer = NULL;
+  preg->allocated = 0;
+
+  re_free (preg->fastmap);
+  preg->fastmap = NULL;
+
+  re_free (preg->translate);
+  preg->translate = NULL;
+}
+libc_hidden_def (__regfree)
+weak_alias (__regfree, regfree)
+
+/* Entry points compatible with 4.2 BSD regex library.  We don't define
+   them unless specifically requested.  */
+
+#if defined _REGEX_RE_COMP || defined _LIBC
+
+/* BSD has one and only one pattern buffer.  */
+static struct re_pattern_buffer re_comp_buf;
+
+char *
+# ifdef _LIBC
+/* Make these definitions weak in libc, so POSIX programs can redefine
+   these names if they don't use our functions, and still use
+   regcomp/regexec above without link errors.  */
+weak_function
+# endif
+re_comp (const char *s)
+{
+  reg_errcode_t ret;
+  char *fastmap;
+
+  if (!s)
+    {
+      if (!re_comp_buf.buffer)
+	return gettext ("No previous regular expression");
+      return 0;
+    }
+
+  if (re_comp_buf.buffer)
+    {
+      fastmap = re_comp_buf.fastmap;
+      re_comp_buf.fastmap = NULL;
+      __regfree (&re_comp_buf);
+      memset (&re_comp_buf, '\0', sizeof (re_comp_buf));
+      re_comp_buf.fastmap = fastmap;
+    }
+
+  if (re_comp_buf.fastmap == NULL)
+    {
+      re_comp_buf.fastmap = re_malloc (char, SBC_MAX);
+      if (re_comp_buf.fastmap == NULL)
+	return (char *) gettext (__re_error_msgid
+				 + __re_error_msgid_idx[(int) REG_ESPACE]);
+    }
+
+  /* Since 're_exec' always passes NULL for the 'regs' argument, we
+     don't need to initialize the pattern buffer fields which affect it.  */
+
+  /* Match anchors at newlines.  */
+  re_comp_buf.newline_anchor = 1;
+
+  ret = re_compile_internal (&re_comp_buf, s, strlen (s), re_syntax_options);
+
+  if (!ret)
+    return NULL;
+
+  /* Yes, we're discarding 'const' here if !HAVE_LIBINTL.  */
+  return (char *) gettext (__re_error_msgid + __re_error_msgid_idx[(int) ret]);
+}
+
+#ifdef _LIBC
+libc_freeres_fn (free_mem)
+{
+  __regfree (&re_comp_buf);
+}
+#endif
+
+#endif /* _REGEX_RE_COMP */
+
+/* Internal entry point.
+   Compile the regular expression PATTERN, whose length is LENGTH.
+   SYNTAX indicate regular expression's syntax.  */
+
+static reg_errcode_t
+re_compile_internal (regex_t *preg, const char * pattern, size_t length,
+		     reg_syntax_t syntax)
+{
+  reg_errcode_t err = REG_NOERROR;
+  re_dfa_t *dfa;
+  re_string_t regexp;
+
+  /* Initialize the pattern buffer.  */
+  preg->fastmap_accurate = 0;
+  preg->syntax = syntax;
+  preg->not_bol = preg->not_eol = 0;
+  preg->used = 0;
+  preg->re_nsub = 0;
+  preg->can_be_null = 0;
+  preg->regs_allocated = REGS_UNALLOCATED;
+
+  /* Initialize the dfa.  */
+  dfa = preg->buffer;
+  if (__glibc_unlikely (preg->allocated < sizeof (re_dfa_t)))
+    {
+      /* If zero allocated, but buffer is non-null, try to realloc
+	 enough space.  This loses if buffer's address is bogus, but
+	 that is the user's responsibility.  If ->buffer is NULL this
+	 is a simple allocation.  */
+      dfa = re_realloc (preg->buffer, re_dfa_t, 1);
+      if (dfa == NULL)
+	return REG_ESPACE;
+      preg->allocated = sizeof (re_dfa_t);
+      preg->buffer = dfa;
+    }
+  preg->used = sizeof (re_dfa_t);
+
+  err = init_dfa (dfa, length);
+  if (__glibc_unlikely (err == REG_NOERROR && lock_init (dfa->lock) != 0))
+    err = REG_ESPACE;
+  if (__glibc_unlikely (err != REG_NOERROR))
+    {
+      free_dfa_content (dfa);
+      preg->buffer = NULL;
+      preg->allocated = 0;
+      return err;
+    }
+#ifdef DEBUG
+  /* Note: length+1 will not overflow since it is checked in init_dfa.  */
+  dfa->re_str = re_malloc (char, length + 1);
+  strncpy (dfa->re_str, pattern, length + 1);
+#endif
+
+  err = re_string_construct (&regexp, pattern, length, preg->translate,
+			     (syntax & RE_ICASE) != 0, dfa);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    {
+    re_compile_internal_free_return:
+      free_workarea_compile (preg);
+      re_string_destruct (&regexp);
+      lock_fini (dfa->lock);
+      free_dfa_content (dfa);
+      preg->buffer = NULL;
+      preg->allocated = 0;
+      return err;
+    }
+
+  /* Parse the regular expression, and build a structure tree.  */
+  preg->re_nsub = 0;
+  dfa->str_tree = parse (&regexp, preg, syntax, &err);
+  if (__glibc_unlikely (dfa->str_tree == NULL))
+    goto re_compile_internal_free_return;
+
+  /* Analyze the tree and create the nfa.  */
+  err = analyze (preg);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    goto re_compile_internal_free_return;
+
+#ifdef RE_ENABLE_I18N
+  /* If possible, do searching in single byte encoding to speed things up.  */
+  if (dfa->is_utf8 && !(syntax & RE_ICASE) && preg->translate == NULL)
+    optimize_utf8 (dfa);
+#endif
+
+  /* Then create the initial state of the dfa.  */
+  err = create_initial_state (dfa);
+
+  /* Release work areas.  */
+  free_workarea_compile (preg);
+  re_string_destruct (&regexp);
+
+  if (__glibc_unlikely (err != REG_NOERROR))
+    {
+      lock_fini (dfa->lock);
+      free_dfa_content (dfa);
+      preg->buffer = NULL;
+      preg->allocated = 0;
+    }
+
+  return err;
+}
+
+/* Initialize DFA.  We use the length of the regular expression PAT_LEN
+   as the initial length of some arrays.  */
+
+static reg_errcode_t
+init_dfa (re_dfa_t *dfa, size_t pat_len)
+{
+  __re_size_t table_size;
+#ifndef _LIBC
+  const char *codeset_name;
+#endif
+#ifdef RE_ENABLE_I18N
+  size_t max_i18n_object_size = MAX (sizeof (wchar_t), sizeof (wctype_t));
+#else
+  size_t max_i18n_object_size = 0;
+#endif
+  size_t max_object_size =
+    MAX (sizeof (struct re_state_table_entry),
+	 MAX (sizeof (re_token_t),
+	      MAX (sizeof (re_node_set),
+		   MAX (sizeof (regmatch_t),
+			max_i18n_object_size))));
+
+  memset (dfa, '\0', sizeof (re_dfa_t));
+
+  /* Force allocation of str_tree_storage the first time.  */
+  dfa->str_tree_storage_idx = BIN_TREE_STORAGE_SIZE;
+
+  /* Avoid overflows.  The extra "/ 2" is for the table_size doubling
+     calculation below, and for similar doubling calculations
+     elsewhere.  And it's <= rather than <, because some of the
+     doubling calculations add 1 afterwards.  */
+  if (__glibc_unlikely (MIN (IDX_MAX, SIZE_MAX / max_object_size) / 2
+			<= pat_len))
+    return REG_ESPACE;
+
+  dfa->nodes_alloc = pat_len + 1;
+  dfa->nodes = re_malloc (re_token_t, dfa->nodes_alloc);
+
+  /*  table_size = 2 ^ ceil(log pat_len) */
+  for (table_size = 1; ; table_size <<= 1)
+    if (table_size > pat_len)
+      break;
+
+  dfa->state_table = calloc (sizeof (struct re_state_table_entry), table_size);
+  dfa->state_hash_mask = table_size - 1;
+
+  dfa->mb_cur_max = MB_CUR_MAX;
+#ifdef _LIBC
+  if (dfa->mb_cur_max == 6
+      && strcmp (_NL_CURRENT (LC_CTYPE, _NL_CTYPE_CODESET_NAME), "UTF-8") == 0)
+    dfa->is_utf8 = 1;
+  dfa->map_notascii = (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MAP_TO_NONASCII)
+		       != 0);
+#else
+# ifdef _MSC_VER
+  (void)codeset_name;
+  if (get_crt_codepage() == CP_UTF8)
+# else
+  codeset_name = nl_langinfo (CODESET);
+  if ((codeset_name[0] == 'U' || codeset_name[0] == 'u')
+      && (codeset_name[1] == 'T' || codeset_name[1] == 't')
+      && (codeset_name[2] == 'F' || codeset_name[2] == 'f')
+      && strcmp (codeset_name + 3 + (codeset_name[3] == '-'), "8") == 0)
+# endif
+    dfa->is_utf8 = 1;
+
+  /* We check exhaustively in the loop below if this charset is a
+     superset of ASCII.  */
+  dfa->map_notascii = 0;
+#endif
+
+#ifdef RE_ENABLE_I18N
+  if (dfa->mb_cur_max > 1)
+    {
+      if (dfa->is_utf8)
+	dfa->sb_char = (re_bitset_ptr_t) utf8_sb_map;
+      else
+	{
+	  int i, j, ch;
+
+	  dfa->sb_char = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 1);
+	  if (__glibc_unlikely (dfa->sb_char == NULL))
+	    return REG_ESPACE;
+
+	  /* Set the bits corresponding to single byte chars.  */
+	  for (i = 0, ch = 0; i < BITSET_WORDS; ++i)
+	    for (j = 0; j < BITSET_WORD_BITS; ++j, ++ch)
+	      {
+		wint_t wch = __btowc (ch);
+		if (wch != WEOF)
+		  dfa->sb_char[i] |= (bitset_word_t) 1 << j;
+# ifndef _LIBC
+		if (isascii (ch) && wch != ch)
+		  dfa->map_notascii = 1;
+# endif
+	      }
+	}
+    }
+#endif
+
+  if (__glibc_unlikely (dfa->nodes == NULL || dfa->state_table == NULL))
+    return REG_ESPACE;
+  return REG_NOERROR;
+}
+
+/* Initialize WORD_CHAR table, which indicate which character is
+   "word".  In this case "word" means that it is the word construction
+   character used by some operators like "\<", "\>", etc.  */
+
+static void
+init_word_char (re_dfa_t *dfa)
+{
+  int i = 0;
+  int j;
+  int ch = 0;
+  dfa->word_ops_used = 1;
+  if (__glibc_likely (dfa->map_notascii == 0))
+    {
+      /* Avoid uint32_t and uint64_t as some non-GCC platforms lack
+	 them, an issue when this code is used in Gnulib.  */
+      bitset_word_t bits0 = 0x00000000;
+      bitset_word_t bits1 = 0x03ff0000;
+      bitset_word_t bits2 = 0x87fffffe;
+      bitset_word_t bits3 = 0x07fffffe;
+      if (BITSET_WORD_BITS == 64)
+	{
+	  /* Pacify gcc -Woverflow on 32-bit platformns.  */
+	  dfa->word_char[0] = bits1 << 31 << 1 | bits0;
+	  dfa->word_char[1] = bits3 << 31 << 1 | bits2;
+	  i = 2;
+	}
+      else if (BITSET_WORD_BITS == 32)
+	{
+	  dfa->word_char[0] = bits0;
+	  dfa->word_char[1] = bits1;
+	  dfa->word_char[2] = bits2;
+	  dfa->word_char[3] = bits3;
+	  i = 4;
+	}
+      else
+        goto general_case;
+      ch = 128;
+
+      if (__glibc_likely (dfa->is_utf8))
+	{
+	  memset (&dfa->word_char[i], '\0', (SBC_MAX - ch) / 8);
+	  return;
+	}
+    }
+
+ general_case:
+  for (; i < BITSET_WORDS; ++i)
+    for (j = 0; j < BITSET_WORD_BITS; ++j, ++ch)
+      if (isalnum (ch) || ch == '_')
+	dfa->word_char[i] |= (bitset_word_t) 1 << j;
+}
+
+/* Free the work area which are only used while compiling.  */
+
+static void
+free_workarea_compile (regex_t *preg)
+{
+  re_dfa_t *dfa = preg->buffer;
+  bin_tree_storage_t *storage, *next;
+  for (storage = dfa->str_tree_storage; storage; storage = next)
+    {
+      next = storage->next;
+      re_free (storage);
+    }
+  dfa->str_tree_storage = NULL;
+  dfa->str_tree_storage_idx = BIN_TREE_STORAGE_SIZE;
+  dfa->str_tree = NULL;
+  re_free (dfa->org_indices);
+  dfa->org_indices = NULL;
+}
+
+/* Create initial states for all contexts.  */
+
+static reg_errcode_t
+create_initial_state (re_dfa_t *dfa)
+{
+  Idx first, i;
+  reg_errcode_t err;
+  re_node_set init_nodes;
+
+  /* Initial states have the epsilon closure of the node which is
+     the first node of the regular expression.  */
+  first = dfa->str_tree->first->node_idx;
+  dfa->init_node = first;
+  err = re_node_set_init_copy (&init_nodes, dfa->eclosures + first);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    return err;
+
+  /* The back-references which are in initial states can epsilon transit,
+     since in this case all of the subexpressions can be null.
+     Then we add epsilon closures of the nodes which are the next nodes of
+     the back-references.  */
+  if (dfa->nbackref > 0)
+    for (i = 0; i < init_nodes.nelem; ++i)
+      {
+	Idx node_idx = init_nodes.elems[i];
+	re_token_type_t type = dfa->nodes[node_idx].type;
+
+	Idx clexp_idx;
+	if (type != OP_BACK_REF)
+	  continue;
+	for (clexp_idx = 0; clexp_idx < init_nodes.nelem; ++clexp_idx)
+	  {
+	    re_token_t *clexp_node;
+	    clexp_node = dfa->nodes + init_nodes.elems[clexp_idx];
+	    if (clexp_node->type == OP_CLOSE_SUBEXP
+		&& clexp_node->opr.idx == dfa->nodes[node_idx].opr.idx)
+	      break;
+	  }
+	if (clexp_idx == init_nodes.nelem)
+	  continue;
+
+	if (type == OP_BACK_REF)
+	  {
+	    Idx dest_idx = dfa->edests[node_idx].elems[0];
+	    if (!re_node_set_contains (&init_nodes, dest_idx))
+	      {
+		reg_errcode_t merge_err
+                  = re_node_set_merge (&init_nodes, dfa->eclosures + dest_idx);
+		if (merge_err != REG_NOERROR)
+		  return merge_err;
+		i = 0;
+	      }
+	  }
+      }
+
+  /* It must be the first time to invoke acquire_state.  */
+  dfa->init_state = re_acquire_state_context (&err, dfa, &init_nodes, 0);
+  /* We don't check ERR here, since the initial state must not be NULL.  */
+  if (__glibc_unlikely (dfa->init_state == NULL))
+    return err;
+  if (dfa->init_state->has_constraint)
+    {
+      dfa->init_state_word = re_acquire_state_context (&err, dfa, &init_nodes,
+						       CONTEXT_WORD);
+      dfa->init_state_nl = re_acquire_state_context (&err, dfa, &init_nodes,
+						     CONTEXT_NEWLINE);
+      dfa->init_state_begbuf = re_acquire_state_context (&err, dfa,
+							 &init_nodes,
+							 CONTEXT_NEWLINE
+							 | CONTEXT_BEGBUF);
+      if (__glibc_unlikely (dfa->init_state_word == NULL
+			    || dfa->init_state_nl == NULL
+			    || dfa->init_state_begbuf == NULL))
+	return err;
+    }
+  else
+    dfa->init_state_word = dfa->init_state_nl
+      = dfa->init_state_begbuf = dfa->init_state;
+
+  re_node_set_free (&init_nodes);
+  return REG_NOERROR;
+}
+
+#ifdef RE_ENABLE_I18N
+/* If it is possible to do searching in single byte encoding instead of UTF-8
+   to speed things up, set dfa->mb_cur_max to 1, clear is_utf8 and change
+   DFA nodes where needed.  */
+
+static void
+optimize_utf8 (re_dfa_t *dfa)
+{
+  Idx node;
+  int i;
+  bool mb_chars = false;
+  bool has_period = false;
+
+  for (node = 0; node < dfa->nodes_len; ++node)
+    switch (dfa->nodes[node].type)
+      {
+      case CHARACTER:
+	if (dfa->nodes[node].opr.c >= ASCII_CHARS)
+	  mb_chars = true;
+	break;
+      case ANCHOR:
+	switch (dfa->nodes[node].opr.ctx_type)
+	  {
+	  case LINE_FIRST:
+	  case LINE_LAST:
+	  case BUF_FIRST:
+	  case BUF_LAST:
+	    break;
+	  default:
+	    /* Word anchors etc. cannot be handled.  It's okay to test
+	       opr.ctx_type since constraints (for all DFA nodes) are
+	       created by ORing one or more opr.ctx_type values.  */
+	    return;
+	  }
+	break;
+      case OP_PERIOD:
+	has_period = true;
+	break;
+      case OP_BACK_REF:
+      case OP_ALT:
+      case END_OF_RE:
+      case OP_DUP_ASTERISK:
+      case OP_OPEN_SUBEXP:
+      case OP_CLOSE_SUBEXP:
+	break;
+      case COMPLEX_BRACKET:
+	return;
+      case SIMPLE_BRACKET:
+	/* Just double check.  */
+	{
+	  int rshift = (ASCII_CHARS % BITSET_WORD_BITS == 0
+			? 0
+			: BITSET_WORD_BITS - ASCII_CHARS % BITSET_WORD_BITS);
+	  for (i = ASCII_CHARS / BITSET_WORD_BITS; i < BITSET_WORDS; ++i)
+	    {
+	      if (dfa->nodes[node].opr.sbcset[i] >> rshift != 0)
+		return;
+	      rshift = 0;
+	    }
+	}
+	break;
+      default:
+	abort ();
+      }
+
+  if (mb_chars || has_period)
+    for (node = 0; node < dfa->nodes_len; ++node)
+      {
+	if (dfa->nodes[node].type == CHARACTER
+	    && dfa->nodes[node].opr.c >= ASCII_CHARS)
+	  dfa->nodes[node].mb_partial = 0;
+	else if (dfa->nodes[node].type == OP_PERIOD)
+	  dfa->nodes[node].type = OP_UTF8_PERIOD;
+      }
+
+  /* The search can be in single byte locale.  */
+  dfa->mb_cur_max = 1;
+  dfa->is_utf8 = 0;
+  dfa->has_mb_node = dfa->nbackref > 0 || has_period;
+}
+#endif
+
+/* Analyze the structure tree, and calculate "first", "next", "edest",
+   "eclosure", and "inveclosure".  */
+
+static reg_errcode_t
+analyze (regex_t *preg)
+{
+  re_dfa_t *dfa = preg->buffer;
+  reg_errcode_t ret;
+
+  /* Allocate arrays.  */
+  dfa->nexts = re_malloc (Idx, dfa->nodes_alloc);
+  dfa->org_indices = re_malloc (Idx, dfa->nodes_alloc);
+  dfa->edests = re_malloc (re_node_set, dfa->nodes_alloc);
+  dfa->eclosures = re_malloc (re_node_set, dfa->nodes_alloc);
+  if (__glibc_unlikely (dfa->nexts == NULL || dfa->org_indices == NULL
+			|| dfa->edests == NULL || dfa->eclosures == NULL))
+    return REG_ESPACE;
+
+  dfa->subexp_map = re_malloc (Idx, preg->re_nsub);
+  if (dfa->subexp_map != NULL)
+    {
+      Idx i;
+      for (i = 0; i < preg->re_nsub; i++)
+	dfa->subexp_map[i] = i;
+      preorder (dfa->str_tree, optimize_subexps, dfa);
+      for (i = 0; i < preg->re_nsub; i++)
+	if (dfa->subexp_map[i] != i)
+	  break;
+      if (i == preg->re_nsub)
+	{
+	  re_free (dfa->subexp_map);
+	  dfa->subexp_map = NULL;
+	}
+    }
+
+  ret = postorder (dfa->str_tree, lower_subexps, preg);
+  if (__glibc_unlikely (ret != REG_NOERROR))
+    return ret;
+  ret = postorder (dfa->str_tree, calc_first, dfa);
+  if (__glibc_unlikely (ret != REG_NOERROR))
+    return ret;
+  preorder (dfa->str_tree, calc_next, dfa);
+  ret = preorder (dfa->str_tree, link_nfa_nodes, dfa);
+  if (__glibc_unlikely (ret != REG_NOERROR))
+    return ret;
+  ret = calc_eclosure (dfa);
+  if (__glibc_unlikely (ret != REG_NOERROR))
+    return ret;
+
+  /* We only need this during the prune_impossible_nodes pass in regexec.c;
+     skip it if p_i_n will not run, as calc_inveclosure can be quadratic.  */
+  if ((!preg->no_sub && preg->re_nsub > 0 && dfa->has_plural_match)
+      || dfa->nbackref)
+    {
+      dfa->inveclosures = re_malloc (re_node_set, dfa->nodes_len);
+      if (__glibc_unlikely (dfa->inveclosures == NULL))
+	return REG_ESPACE;
+      ret = calc_inveclosure (dfa);
+    }
+
+  return ret;
+}
+
+/* Our parse trees are very unbalanced, so we cannot use a stack to
+   implement parse tree visits.  Instead, we use parent pointers and
+   some hairy code in these two functions.  */
+static reg_errcode_t
+postorder (bin_tree_t *root, reg_errcode_t (fn (void *, bin_tree_t *)),
+	   void *extra)
+{
+  bin_tree_t *node, *prev;
+
+  for (node = root; ; )
+    {
+      /* Descend down the tree, preferably to the left (or to the right
+	 if that's the only child).  */
+      while (node->left || node->right)
+	if (node->left)
+	  node = node->left;
+	else
+	  node = node->right;
+
+      do
+	{
+	  reg_errcode_t err = fn (extra, node);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return err;
+	  if (node->parent == NULL)
+	    return REG_NOERROR;
+	  prev = node;
+	  node = node->parent;
+	}
+      /* Go up while we have a node that is reached from the right.  */
+      while (node->right == prev || node->right == NULL);
+      node = node->right;
+    }
+}
+
+static reg_errcode_t
+preorder (bin_tree_t *root, reg_errcode_t (fn (void *, bin_tree_t *)),
+	  void *extra)
+{
+  bin_tree_t *node;
+
+  for (node = root; ; )
+    {
+      reg_errcode_t err = fn (extra, node);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	return err;
+
+      /* Go to the left node, or up and to the right.  */
+      if (node->left)
+	node = node->left;
+      else
+	{
+	  bin_tree_t *prev = NULL;
+	  while (node->right == prev || node->right == NULL)
+	    {
+	      prev = node;
+	      node = node->parent;
+	      if (!node)
+		return REG_NOERROR;
+	    }
+	  node = node->right;
+	}
+    }
+}
+
+/* Optimization pass: if a SUBEXP is entirely contained, strip it and tell
+   re_search_internal to map the inner one's opr.idx to this one's.  Adjust
+   backreferences as well.  Requires a preorder visit.  */
+static reg_errcode_t
+optimize_subexps (void *extra, bin_tree_t *node)
+{
+  re_dfa_t *dfa = (re_dfa_t *) extra;
+
+  if (node->token.type == OP_BACK_REF && dfa->subexp_map)
+    {
+      int idx = node->token.opr.idx;
+      node->token.opr.idx = dfa->subexp_map[idx];
+      dfa->used_bkref_map |= 1 << node->token.opr.idx;
+    }
+
+  else if (node->token.type == SUBEXP
+	   && node->left && node->left->token.type == SUBEXP)
+    {
+      Idx other_idx = node->left->token.opr.idx;
+
+      node->left = node->left->left;
+      if (node->left)
+	node->left->parent = node;
+
+      dfa->subexp_map[other_idx] = dfa->subexp_map[node->token.opr.idx];
+      if (other_idx < BITSET_WORD_BITS)
+	dfa->used_bkref_map &= ~((bitset_word_t) 1 << other_idx);
+    }
+
+  return REG_NOERROR;
+}
+
+/* Lowering pass: Turn each SUBEXP node into the appropriate concatenation
+   of OP_OPEN_SUBEXP, the body of the SUBEXP (if any) and OP_CLOSE_SUBEXP.  */
+static reg_errcode_t
+lower_subexps (void *extra, bin_tree_t *node)
+{
+  regex_t *preg = (regex_t *) extra;
+  reg_errcode_t err = REG_NOERROR;
+
+  if (node->left && node->left->token.type == SUBEXP)
+    {
+      node->left = lower_subexp (&err, preg, node->left);
+      if (node->left)
+	node->left->parent = node;
+    }
+  if (node->right && node->right->token.type == SUBEXP)
+    {
+      node->right = lower_subexp (&err, preg, node->right);
+      if (node->right)
+	node->right->parent = node;
+    }
+
+  return err;
+}
+
+static bin_tree_t *
+lower_subexp (reg_errcode_t *err, regex_t *preg, bin_tree_t *node)
+{
+  re_dfa_t *dfa = preg->buffer;
+  bin_tree_t *body = node->left;
+  bin_tree_t *op, *cls, *tree1, *tree;
+
+  if (preg->no_sub
+      /* We do not optimize empty subexpressions, because otherwise we may
+	 have bad CONCAT nodes with NULL children.  This is obviously not
+	 very common, so we do not lose much.  An example that triggers
+	 this case is the sed "script" /\(\)/x.  */
+      && node->left != NULL
+      && (node->token.opr.idx >= BITSET_WORD_BITS
+	  || !(dfa->used_bkref_map
+	       & ((bitset_word_t) 1 << node->token.opr.idx))))
+    return node->left;
+
+  /* Convert the SUBEXP node to the concatenation of an
+     OP_OPEN_SUBEXP, the contents, and an OP_CLOSE_SUBEXP.  */
+  op = create_tree (dfa, NULL, NULL, OP_OPEN_SUBEXP);
+  cls = create_tree (dfa, NULL, NULL, OP_CLOSE_SUBEXP);
+  tree1 = body ? create_tree (dfa, body, cls, CONCAT) : cls;
+  tree = create_tree (dfa, op, tree1, CONCAT);
+  if (__glibc_unlikely (tree == NULL || tree1 == NULL
+			|| op == NULL || cls == NULL))
+    {
+      *err = REG_ESPACE;
+      return NULL;
+    }
+
+  op->token.opr.idx = cls->token.opr.idx = node->token.opr.idx;
+  op->token.opt_subexp = cls->token.opt_subexp = node->token.opt_subexp;
+  return tree;
+}
+
+/* Pass 1 in building the NFA: compute FIRST and create unlinked automaton
+   nodes.  Requires a postorder visit.  */
+static reg_errcode_t
+calc_first (void *extra, bin_tree_t *node)
+{
+  re_dfa_t *dfa = (re_dfa_t *) extra;
+  if (node->token.type == CONCAT)
+    {
+      node->first = node->left->first;
+      node->node_idx = node->left->node_idx;
+    }
+  else
+    {
+      node->first = node;
+      node->node_idx = re_dfa_add_node (dfa, node->token);
+      if (__glibc_unlikely (node->node_idx == -1))
+	return REG_ESPACE;
+      if (node->token.type == ANCHOR)
+	dfa->nodes[node->node_idx].constraint = node->token.opr.ctx_type;
+    }
+  return REG_NOERROR;
+}
+
+/* Pass 2: compute NEXT on the tree.  Preorder visit.  */
+static reg_errcode_t
+calc_next (void *extra, bin_tree_t *node)
+{
+  switch (node->token.type)
+    {
+    case OP_DUP_ASTERISK:
+      node->left->next = node;
+      break;
+    case CONCAT:
+      node->left->next = node->right->first;
+      node->right->next = node->next;
+      break;
+    default:
+      if (node->left)
+	node->left->next = node->next;
+      if (node->right)
+	node->right->next = node->next;
+      break;
+    }
+  return REG_NOERROR;
+}
+
+/* Pass 3: link all DFA nodes to their NEXT node (any order will do).  */
+static reg_errcode_t
+link_nfa_nodes (void *extra, bin_tree_t *node)
+{
+  re_dfa_t *dfa = (re_dfa_t *) extra;
+  Idx idx = node->node_idx;
+  reg_errcode_t err = REG_NOERROR;
+
+  switch (node->token.type)
+    {
+    case CONCAT:
+      break;
+
+    case END_OF_RE:
+      DEBUG_ASSERT (node->next == NULL);
+      break;
+
+    case OP_DUP_ASTERISK:
+    case OP_ALT:
+      {
+	Idx left, right;
+	dfa->has_plural_match = 1;
+	if (node->left != NULL)
+	  left = node->left->first->node_idx;
+	else
+	  left = node->next->node_idx;
+	if (node->right != NULL)
+	  right = node->right->first->node_idx;
+	else
+	  right = node->next->node_idx;
+	DEBUG_ASSERT (left > -1);
+	DEBUG_ASSERT (right > -1);
+	err = re_node_set_init_2 (dfa->edests + idx, left, right);
+      }
+      break;
+
+    case ANCHOR:
+    case OP_OPEN_SUBEXP:
+    case OP_CLOSE_SUBEXP:
+      err = re_node_set_init_1 (dfa->edests + idx, node->next->node_idx);
+      break;
+
+    case OP_BACK_REF:
+      dfa->nexts[idx] = node->next->node_idx;
+      if (node->token.type == OP_BACK_REF)
+	err = re_node_set_init_1 (dfa->edests + idx, dfa->nexts[idx]);
+      break;
+
+    default:
+      DEBUG_ASSERT (!IS_EPSILON_NODE (node->token.type));
+      dfa->nexts[idx] = node->next->node_idx;
+      break;
+    }
+
+  return err;
+}
+
+/* Duplicate the epsilon closure of the node ROOT_NODE.
+   Note that duplicated nodes have constraint INIT_CONSTRAINT in addition
+   to their own constraint.  */
+
+static reg_errcode_t
+duplicate_node_closure (re_dfa_t *dfa, Idx top_org_node, Idx top_clone_node,
+			Idx root_node, unsigned int init_constraint)
+{
+  Idx org_node, clone_node;
+  bool ok;
+  unsigned int constraint = init_constraint;
+  for (org_node = top_org_node, clone_node = top_clone_node;;)
+    {
+      Idx org_dest, clone_dest;
+      if (dfa->nodes[org_node].type == OP_BACK_REF)
+	{
+	  /* If the back reference epsilon-transit, its destination must
+	     also have the constraint.  Then duplicate the epsilon closure
+	     of the destination of the back reference, and store it in
+	     edests of the back reference.  */
+	  org_dest = dfa->nexts[org_node];
+	  re_node_set_empty (dfa->edests + clone_node);
+	  clone_dest = duplicate_node (dfa, org_dest, constraint);
+	  if (__glibc_unlikely (clone_dest == -1))
+	    return REG_ESPACE;
+	  dfa->nexts[clone_node] = dfa->nexts[org_node];
+	  ok = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+	  if (__glibc_unlikely (! ok))
+	    return REG_ESPACE;
+	}
+      else if (dfa->edests[org_node].nelem == 0)
+	{
+	  /* In case of the node can't epsilon-transit, don't duplicate the
+	     destination and store the original destination as the
+	     destination of the node.  */
+	  dfa->nexts[clone_node] = dfa->nexts[org_node];
+	  break;
+	}
+      else if (dfa->edests[org_node].nelem == 1)
+	{
+	  /* In case of the node can epsilon-transit, and it has only one
+	     destination.  */
+	  org_dest = dfa->edests[org_node].elems[0];
+	  re_node_set_empty (dfa->edests + clone_node);
+	  /* If the node is root_node itself, it means the epsilon closure
+	     has a loop.  Then tie it to the destination of the root_node.  */
+	  if (org_node == root_node && clone_node != org_node)
+	    {
+	      ok = re_node_set_insert (dfa->edests + clone_node, org_dest);
+	      if (__glibc_unlikely (! ok))
+	        return REG_ESPACE;
+	      break;
+	    }
+	  /* In case the node has another constraint, append it.  */
+	  constraint |= dfa->nodes[org_node].constraint;
+	  clone_dest = duplicate_node (dfa, org_dest, constraint);
+	  if (__glibc_unlikely (clone_dest == -1))
+	    return REG_ESPACE;
+	  ok = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+	  if (__glibc_unlikely (! ok))
+	    return REG_ESPACE;
+	}
+      else /* dfa->edests[org_node].nelem == 2 */
+	{
+	  /* In case of the node can epsilon-transit, and it has two
+	     destinations. In the bin_tree_t and DFA, that's '|' and '*'.   */
+	  org_dest = dfa->edests[org_node].elems[0];
+	  re_node_set_empty (dfa->edests + clone_node);
+	  /* Search for a duplicated node which satisfies the constraint.  */
+	  clone_dest = search_duplicated_node (dfa, org_dest, constraint);
+	  if (clone_dest == -1)
+	    {
+	      /* There is no such duplicated node, create a new one.  */
+	      reg_errcode_t err;
+	      clone_dest = duplicate_node (dfa, org_dest, constraint);
+	      if (__glibc_unlikely (clone_dest == -1))
+		return REG_ESPACE;
+	      ok = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+	      if (__glibc_unlikely (! ok))
+		return REG_ESPACE;
+	      err = duplicate_node_closure (dfa, org_dest, clone_dest,
+					    root_node, constraint);
+	      if (__glibc_unlikely (err != REG_NOERROR))
+		return err;
+	    }
+	  else
+	    {
+	      /* There is a duplicated node which satisfies the constraint,
+		 use it to avoid infinite loop.  */
+	      ok = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+	      if (__glibc_unlikely (! ok))
+		return REG_ESPACE;
+	    }
+
+	  org_dest = dfa->edests[org_node].elems[1];
+	  clone_dest = duplicate_node (dfa, org_dest, constraint);
+	  if (__glibc_unlikely (clone_dest == -1))
+	    return REG_ESPACE;
+	  ok = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+	  if (__glibc_unlikely (! ok))
+	    return REG_ESPACE;
+	}
+      org_node = org_dest;
+      clone_node = clone_dest;
+    }
+  return REG_NOERROR;
+}
+
+/* Search for a node which is duplicated from the node ORG_NODE, and
+   satisfies the constraint CONSTRAINT.  */
+
+static Idx
+search_duplicated_node (const re_dfa_t *dfa, Idx org_node,
+			unsigned int constraint)
+{
+  Idx idx;
+  for (idx = dfa->nodes_len - 1; dfa->nodes[idx].duplicated && idx > 0; --idx)
+    {
+      if (org_node == dfa->org_indices[idx]
+	  && constraint == dfa->nodes[idx].constraint)
+	return idx; /* Found.  */
+    }
+  return -1; /* Not found.  */
+}
+
+/* Duplicate the node whose index is ORG_IDX and set the constraint CONSTRAINT.
+   Return the index of the new node, or -1 if insufficient storage is
+   available.  */
+
+static Idx
+duplicate_node (re_dfa_t *dfa, Idx org_idx, unsigned int constraint)
+{
+  Idx dup_idx = re_dfa_add_node (dfa, dfa->nodes[org_idx]);
+  if (__glibc_likely (dup_idx != -1))
+    {
+      dfa->nodes[dup_idx].constraint = constraint;
+      dfa->nodes[dup_idx].constraint |= dfa->nodes[org_idx].constraint;
+      dfa->nodes[dup_idx].duplicated = 1;
+
+      /* Store the index of the original node.  */
+      dfa->org_indices[dup_idx] = org_idx;
+    }
+  return dup_idx;
+}
+
+static reg_errcode_t
+calc_inveclosure (re_dfa_t *dfa)
+{
+  Idx src, idx;
+  bool ok;
+  for (idx = 0; idx < dfa->nodes_len; ++idx)
+    re_node_set_init_empty (dfa->inveclosures + idx);
+
+  for (src = 0; src < dfa->nodes_len; ++src)
+    {
+      Idx *elems = dfa->eclosures[src].elems;
+      for (idx = 0; idx < dfa->eclosures[src].nelem; ++idx)
+	{
+	  ok = re_node_set_insert_last (dfa->inveclosures + elems[idx], src);
+	  if (__glibc_unlikely (! ok))
+	    return REG_ESPACE;
+	}
+    }
+
+  return REG_NOERROR;
+}
+
+/* Calculate "eclosure" for all the node in DFA.  */
+
+static reg_errcode_t
+calc_eclosure (re_dfa_t *dfa)
+{
+  Idx node_idx;
+  bool incomplete;
+  DEBUG_ASSERT (dfa->nodes_len > 0);
+  incomplete = false;
+  /* For each nodes, calculate epsilon closure.  */
+  for (node_idx = 0; ; ++node_idx)
+    {
+      reg_errcode_t err;
+      re_node_set eclosure_elem;
+      if (node_idx == dfa->nodes_len)
+	{
+	  if (!incomplete)
+	    break;
+	  incomplete = false;
+	  node_idx = 0;
+	}
+
+      DEBUG_ASSERT (dfa->eclosures[node_idx].nelem != -1);
+
+      /* If we have already calculated, skip it.  */
+      if (dfa->eclosures[node_idx].nelem != 0)
+	continue;
+      /* Calculate epsilon closure of 'node_idx'.  */
+      err = calc_eclosure_iter (&eclosure_elem, dfa, node_idx, true);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	return err;
+
+      if (dfa->eclosures[node_idx].nelem == 0)
+	{
+	  incomplete = true;
+	  re_node_set_free (&eclosure_elem);
+	}
+    }
+  return REG_NOERROR;
+}
+
+/* Calculate epsilon closure of NODE.  */
+
+static reg_errcode_t
+calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa, Idx node, bool root)
+{
+  reg_errcode_t err;
+  Idx i;
+  re_node_set eclosure;
+  bool incomplete = false;
+  err = re_node_set_alloc (&eclosure, dfa->edests[node].nelem + 1);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    return err;
+
+  /* An epsilon closure includes itself.  */
+  eclosure.elems[eclosure.nelem++] = node;
+
+  /* This indicates that we are calculating this node now.
+     We reference this value to avoid infinite loop.  */
+  dfa->eclosures[node].nelem = -1;
+
+  /* If the current node has constraints, duplicate all nodes
+     since they must inherit the constraints.  */
+  if (dfa->nodes[node].constraint
+      && dfa->edests[node].nelem
+      && !dfa->nodes[dfa->edests[node].elems[0]].duplicated)
+    {
+      err = duplicate_node_closure (dfa, node, node, node,
+				    dfa->nodes[node].constraint);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	return err;
+    }
+
+  /* Expand each epsilon destination nodes.  */
+  if (IS_EPSILON_NODE(dfa->nodes[node].type))
+    for (i = 0; i < dfa->edests[node].nelem; ++i)
+      {
+	re_node_set eclosure_elem;
+	Idx edest = dfa->edests[node].elems[i];
+	/* If calculating the epsilon closure of 'edest' is in progress,
+	   return intermediate result.  */
+	if (dfa->eclosures[edest].nelem == -1)
+	  {
+	    incomplete = true;
+	    continue;
+	  }
+	/* If we haven't calculated the epsilon closure of 'edest' yet,
+	   calculate now. Otherwise use calculated epsilon closure.  */
+	if (dfa->eclosures[edest].nelem == 0)
+	  {
+	    err = calc_eclosure_iter (&eclosure_elem, dfa, edest, false);
+	    if (__glibc_unlikely (err != REG_NOERROR))
+	      return err;
+	  }
+	else
+	  eclosure_elem = dfa->eclosures[edest];
+	/* Merge the epsilon closure of 'edest'.  */
+	err = re_node_set_merge (&eclosure, &eclosure_elem);
+	if (__glibc_unlikely (err != REG_NOERROR))
+	  return err;
+	/* If the epsilon closure of 'edest' is incomplete,
+	   the epsilon closure of this node is also incomplete.  */
+	if (dfa->eclosures[edest].nelem == 0)
+	  {
+	    incomplete = true;
+	    re_node_set_free (&eclosure_elem);
+	  }
+      }
+
+  if (incomplete && !root)
+    dfa->eclosures[node].nelem = 0;
+  else
+    dfa->eclosures[node] = eclosure;
+  *new_set = eclosure;
+  return REG_NOERROR;
+}
+
+/* Functions for token which are used in the parser.  */
+
+/* Fetch a token from INPUT.
+   We must not use this function inside bracket expressions.  */
+
+static void
+fetch_token (re_token_t *result, re_string_t *input, reg_syntax_t syntax)
+{
+  re_string_skip_bytes (input, peek_token (result, input, syntax));
+}
+
+/* Peek a token from INPUT, and return the length of the token.
+   We must not use this function inside bracket expressions.  */
+
+static int
+peek_token (re_token_t *token, re_string_t *input, reg_syntax_t syntax)
+{
+  unsigned char c;
+
+  if (re_string_eoi (input))
+    {
+      token->type = END_OF_RE;
+      return 0;
+    }
+
+  c = re_string_peek_byte (input, 0);
+  token->opr.c = c;
+
+  token->word_char = 0;
+#ifdef RE_ENABLE_I18N
+  token->mb_partial = 0;
+  if (input->mb_cur_max > 1
+      && !re_string_first_byte (input, re_string_cur_idx (input)))
+    {
+      token->type = CHARACTER;
+      token->mb_partial = 1;
+      return 1;
+    }
+#endif
+  if (c == '\\')
+    {
+      unsigned char c2;
+      if (re_string_cur_idx (input) + 1 >= re_string_length (input))
+	{
+	  token->type = BACK_SLASH;
+	  return 1;
+	}
+
+      c2 = re_string_peek_byte_case (input, 1);
+      token->opr.c = c2;
+      token->type = CHARACTER;
+#ifdef RE_ENABLE_I18N
+      if (input->mb_cur_max > 1)
+	{
+	  wint_t wc = re_string_wchar_at (input,
+					  re_string_cur_idx (input) + 1);
+	  token->word_char = IS_WIDE_WORD_CHAR (wc) != 0;
+	}
+      else
+#endif
+	token->word_char = IS_WORD_CHAR (c2) != 0;
+
+      switch (c2)
+	{
+	case '|':
+	  if (!(syntax & RE_LIMITED_OPS) && !(syntax & RE_NO_BK_VBAR))
+	    token->type = OP_ALT;
+	  break;
+	case '1': case '2': case '3': case '4': case '5':
+	case '6': case '7': case '8': case '9':
+	  if (!(syntax & RE_NO_BK_REFS))
+	    {
+	      token->type = OP_BACK_REF;
+	      token->opr.idx = c2 - '1';
+	    }
+	  break;
+	case '<':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    {
+	      token->type = ANCHOR;
+	      token->opr.ctx_type = WORD_FIRST;
+	    }
+	  break;
+	case '>':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    {
+	      token->type = ANCHOR;
+	      token->opr.ctx_type = WORD_LAST;
+	    }
+	  break;
+	case 'b':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    {
+	      token->type = ANCHOR;
+	      token->opr.ctx_type = WORD_DELIM;
+	    }
+	  break;
+	case 'B':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    {
+	      token->type = ANCHOR;
+	      token->opr.ctx_type = NOT_WORD_DELIM;
+	    }
+	  break;
+	case 'w':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    token->type = OP_WORD;
+	  break;
+	case 'W':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    token->type = OP_NOTWORD;
+	  break;
+	case 's':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    token->type = OP_SPACE;
+	  break;
+	case 'S':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    token->type = OP_NOTSPACE;
+	  break;
+	case '`':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    {
+	      token->type = ANCHOR;
+	      token->opr.ctx_type = BUF_FIRST;
+	    }
+	  break;
+	case '\'':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    {
+	      token->type = ANCHOR;
+	      token->opr.ctx_type = BUF_LAST;
+	    }
+	  break;
+	case '(':
+	  if (!(syntax & RE_NO_BK_PARENS))
+	    token->type = OP_OPEN_SUBEXP;
+	  break;
+	case ')':
+	  if (!(syntax & RE_NO_BK_PARENS))
+	    token->type = OP_CLOSE_SUBEXP;
+	  break;
+	case '+':
+	  if (!(syntax & RE_LIMITED_OPS) && (syntax & RE_BK_PLUS_QM))
+	    token->type = OP_DUP_PLUS;
+	  break;
+	case '?':
+	  if (!(syntax & RE_LIMITED_OPS) && (syntax & RE_BK_PLUS_QM))
+	    token->type = OP_DUP_QUESTION;
+	  break;
+	case '{':
+	  if ((syntax & RE_INTERVALS) && (!(syntax & RE_NO_BK_BRACES)))
+	    token->type = OP_OPEN_DUP_NUM;
+	  break;
+	case '}':
+	  if ((syntax & RE_INTERVALS) && (!(syntax & RE_NO_BK_BRACES)))
+	    token->type = OP_CLOSE_DUP_NUM;
+	  break;
+	default:
+	  break;
+	}
+      return 2;
+    }
+
+  token->type = CHARACTER;
+#ifdef RE_ENABLE_I18N
+  if (input->mb_cur_max > 1)
+    {
+      wint_t wc = re_string_wchar_at (input, re_string_cur_idx (input));
+      token->word_char = IS_WIDE_WORD_CHAR (wc) != 0;
+    }
+  else
+#endif
+    token->word_char = IS_WORD_CHAR (token->opr.c);
+
+  switch (c)
+    {
+    case '\n':
+      if (syntax & RE_NEWLINE_ALT)
+	token->type = OP_ALT;
+      break;
+    case '|':
+      if (!(syntax & RE_LIMITED_OPS) && (syntax & RE_NO_BK_VBAR))
+	token->type = OP_ALT;
+      break;
+    case '*':
+      token->type = OP_DUP_ASTERISK;
+      break;
+    case '+':
+      if (!(syntax & RE_LIMITED_OPS) && !(syntax & RE_BK_PLUS_QM))
+	token->type = OP_DUP_PLUS;
+      break;
+    case '?':
+      if (!(syntax & RE_LIMITED_OPS) && !(syntax & RE_BK_PLUS_QM))
+	token->type = OP_DUP_QUESTION;
+      break;
+    case '{':
+      if ((syntax & RE_INTERVALS) && (syntax & RE_NO_BK_BRACES))
+	token->type = OP_OPEN_DUP_NUM;
+      break;
+    case '}':
+      if ((syntax & RE_INTERVALS) && (syntax & RE_NO_BK_BRACES))
+	token->type = OP_CLOSE_DUP_NUM;
+      break;
+    case '(':
+      if (syntax & RE_NO_BK_PARENS)
+	token->type = OP_OPEN_SUBEXP;
+      break;
+    case ')':
+      if (syntax & RE_NO_BK_PARENS)
+	token->type = OP_CLOSE_SUBEXP;
+      break;
+    case '[':
+      token->type = OP_OPEN_BRACKET;
+      break;
+    case '.':
+      token->type = OP_PERIOD;
+      break;
+    case '^':
+      if (!(syntax & (RE_CONTEXT_INDEP_ANCHORS | RE_CARET_ANCHORS_HERE))
+	  && re_string_cur_idx (input) != 0)
+	{
+	  char prev = re_string_peek_byte (input, -1);
+	  if (!(syntax & RE_NEWLINE_ALT) || prev != '\n')
+	    break;
+	}
+      token->type = ANCHOR;
+      token->opr.ctx_type = LINE_FIRST;
+      break;
+    case '$':
+      if (!(syntax & RE_CONTEXT_INDEP_ANCHORS)
+	  && re_string_cur_idx (input) + 1 != re_string_length (input))
+	{
+	  re_token_t next;
+	  re_string_skip_bytes (input, 1);
+	  peek_token (&next, input, syntax);
+	  re_string_skip_bytes (input, -1);
+	  if (next.type != OP_ALT && next.type != OP_CLOSE_SUBEXP)
+	    break;
+	}
+      token->type = ANCHOR;
+      token->opr.ctx_type = LINE_LAST;
+      break;
+    default:
+      break;
+    }
+  return 1;
+}
+
+/* Peek a token from INPUT, and return the length of the token.
+   We must not use this function out of bracket expressions.  */
+
+static int
+peek_token_bracket (re_token_t *token, re_string_t *input, reg_syntax_t syntax)
+{
+  unsigned char c;
+  if (re_string_eoi (input))
+    {
+      token->type = END_OF_RE;
+      return 0;
+    }
+  c = re_string_peek_byte (input, 0);
+  token->opr.c = c;
+
+#ifdef RE_ENABLE_I18N
+  if (input->mb_cur_max > 1
+      && !re_string_first_byte (input, re_string_cur_idx (input)))
+    {
+      token->type = CHARACTER;
+      return 1;
+    }
+#endif /* RE_ENABLE_I18N */
+
+  if (c == '\\' && (syntax & RE_BACKSLASH_ESCAPE_IN_LISTS)
+      && re_string_cur_idx (input) + 1 < re_string_length (input))
+    {
+      /* In this case, '\' escape a character.  */
+      unsigned char c2;
+      re_string_skip_bytes (input, 1);
+      c2 = re_string_peek_byte (input, 0);
+      token->opr.c = c2;
+      token->type = CHARACTER;
+      return 1;
+    }
+  if (c == '[') /* '[' is a special char in a bracket exps.  */
+    {
+      unsigned char c2;
+      int token_len;
+      if (re_string_cur_idx (input) + 1 < re_string_length (input))
+	c2 = re_string_peek_byte (input, 1);
+      else
+	c2 = 0;
+      token->opr.c = c2;
+      token_len = 2;
+      switch (c2)
+	{
+	case '.':
+	  token->type = OP_OPEN_COLL_ELEM;
+	  break;
+
+	case '=':
+	  token->type = OP_OPEN_EQUIV_CLASS;
+	  break;
+
+	case ':':
+	  if (syntax & RE_CHAR_CLASSES)
+	    {
+	      token->type = OP_OPEN_CHAR_CLASS;
+	      break;
+	    }
+	  FALLTHROUGH;
+	default:
+	  token->type = CHARACTER;
+	  token->opr.c = c;
+	  token_len = 1;
+	  break;
+	}
+      return token_len;
+    }
+  switch (c)
+    {
+    case '-':
+      token->type = OP_CHARSET_RANGE;
+      break;
+    case ']':
+      token->type = OP_CLOSE_BRACKET;
+      break;
+    case '^':
+      token->type = OP_NON_MATCH_LIST;
+      break;
+    default:
+      token->type = CHARACTER;
+    }
+  return 1;
+}
+
+/* Functions for parser.  */
+
+/* Entry point of the parser.
+   Parse the regular expression REGEXP and return the structure tree.
+   If an error occurs, ERR is set by error code, and return NULL.
+   This function build the following tree, from regular expression <reg_exp>:
+	   CAT
+	   / \
+	  /   \
+   <reg_exp>  EOR
+
+   CAT means concatenation.
+   EOR means end of regular expression.  */
+
+static bin_tree_t *
+parse (re_string_t *regexp, regex_t *preg, reg_syntax_t syntax,
+       reg_errcode_t *err)
+{
+  re_dfa_t *dfa = preg->buffer;
+  bin_tree_t *tree, *eor, *root;
+  re_token_t current_token;
+  dfa->syntax = syntax;
+  fetch_token (&current_token, regexp, syntax | RE_CARET_ANCHORS_HERE);
+  tree = parse_reg_exp (regexp, preg, &current_token, syntax, 0, err);
+  if (__glibc_unlikely (*err != REG_NOERROR && tree == NULL))
+    return NULL;
+  eor = create_tree (dfa, NULL, NULL, END_OF_RE);
+  if (tree != NULL)
+    root = create_tree (dfa, tree, eor, CONCAT);
+  else
+    root = eor;
+  if (__glibc_unlikely (eor == NULL || root == NULL))
+    {
+      *err = REG_ESPACE;
+      return NULL;
+    }
+  return root;
+}
+
+/* This function build the following tree, from regular expression
+   <branch1>|<branch2>:
+	   ALT
+	   / \
+	  /   \
+   <branch1> <branch2>
+
+   ALT means alternative, which represents the operator '|'.  */
+
+static bin_tree_t *
+parse_reg_exp (re_string_t *regexp, regex_t *preg, re_token_t *token,
+	       reg_syntax_t syntax, Idx nest, reg_errcode_t *err)
+{
+  re_dfa_t *dfa = preg->buffer;
+  bin_tree_t *tree, *branch = NULL;
+  bitset_word_t initial_bkref_map = dfa->completed_bkref_map;
+  tree = parse_branch (regexp, preg, token, syntax, nest, err);
+  if (__glibc_unlikely (*err != REG_NOERROR && tree == NULL))
+    return NULL;
+
+  while (token->type == OP_ALT)
+    {
+      fetch_token (token, regexp, syntax | RE_CARET_ANCHORS_HERE);
+      if (token->type != OP_ALT && token->type != END_OF_RE
+	  && (nest == 0 || token->type != OP_CLOSE_SUBEXP))
+	{
+	  bitset_word_t accumulated_bkref_map = dfa->completed_bkref_map;
+	  dfa->completed_bkref_map = initial_bkref_map;
+	  branch = parse_branch (regexp, preg, token, syntax, nest, err);
+	  if (__glibc_unlikely (*err != REG_NOERROR && branch == NULL))
+	    {
+	      if (tree != NULL)
+		postorder (tree, free_tree, NULL);
+	      return NULL;
+	    }
+	  dfa->completed_bkref_map |= accumulated_bkref_map;
+	}
+      else
+	branch = NULL;
+      tree = create_tree (dfa, tree, branch, OP_ALT);
+      if (__glibc_unlikely (tree == NULL))
+	{
+	  *err = REG_ESPACE;
+	  return NULL;
+	}
+    }
+  return tree;
+}
+
+/* This function build the following tree, from regular expression
+   <exp1><exp2>:
+	CAT
+	/ \
+       /   \
+   <exp1> <exp2>
+
+   CAT means concatenation.  */
+
+static bin_tree_t *
+parse_branch (re_string_t *regexp, regex_t *preg, re_token_t *token,
+	      reg_syntax_t syntax, Idx nest, reg_errcode_t *err)
+{
+  bin_tree_t *tree, *expr;
+  re_dfa_t *dfa = preg->buffer;
+  tree = parse_expression (regexp, preg, token, syntax, nest, err);
+  if (__glibc_unlikely (*err != REG_NOERROR && tree == NULL))
+    return NULL;
+
+  while (token->type != OP_ALT && token->type != END_OF_RE
+	 && (nest == 0 || token->type != OP_CLOSE_SUBEXP))
+    {
+      expr = parse_expression (regexp, preg, token, syntax, nest, err);
+      if (__glibc_unlikely (*err != REG_NOERROR && expr == NULL))
+	{
+	  if (tree != NULL)
+	    postorder (tree, free_tree, NULL);
+	  return NULL;
+	}
+      if (tree != NULL && expr != NULL)
+	{
+	  bin_tree_t *newtree = create_tree (dfa, tree, expr, CONCAT);
+	  if (newtree == NULL)
+	    {
+	      postorder (expr, free_tree, NULL);
+	      postorder (tree, free_tree, NULL);
+	      *err = REG_ESPACE;
+	      return NULL;
+	    }
+	  tree = newtree;
+	}
+      else if (tree == NULL)
+	tree = expr;
+      /* Otherwise expr == NULL, we don't need to create new tree.  */
+    }
+  return tree;
+}
+
+/* This function build the following tree, from regular expression a*:
+	 *
+	 |
+	 a
+*/
+
+static bin_tree_t *
+parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
+		  reg_syntax_t syntax, Idx nest, reg_errcode_t *err)
+{
+  re_dfa_t *dfa = preg->buffer;
+  bin_tree_t *tree;
+  switch (token->type)
+    {
+    case CHARACTER:
+      tree = create_token_tree (dfa, NULL, NULL, token);
+      if (__glibc_unlikely (tree == NULL))
+	{
+	  *err = REG_ESPACE;
+	  return NULL;
+	}
+#ifdef RE_ENABLE_I18N
+      if (dfa->mb_cur_max > 1)
+	{
+	  while (!re_string_eoi (regexp)
+		 && !re_string_first_byte (regexp, re_string_cur_idx (regexp)))
+	    {
+	      bin_tree_t *mbc_remain;
+	      fetch_token (token, regexp, syntax);
+	      mbc_remain = create_token_tree (dfa, NULL, NULL, token);
+	      tree = create_tree (dfa, tree, mbc_remain, CONCAT);
+	      if (__glibc_unlikely (mbc_remain == NULL || tree == NULL))
+		{
+		  *err = REG_ESPACE;
+		  return NULL;
+		}
+	    }
+	}
+#endif
+      break;
+
+    case OP_OPEN_SUBEXP:
+      tree = parse_sub_exp (regexp, preg, token, syntax, nest + 1, err);
+      if (__glibc_unlikely (*err != REG_NOERROR && tree == NULL))
+	return NULL;
+      break;
+
+    case OP_OPEN_BRACKET:
+      tree = parse_bracket_exp (regexp, dfa, token, syntax, err);
+      if (__glibc_unlikely (*err != REG_NOERROR && tree == NULL))
+	return NULL;
+      break;
+
+    case OP_BACK_REF:
+      if (!__glibc_likely (dfa->completed_bkref_map & (1 << token->opr.idx)))
+	{
+	  *err = REG_ESUBREG;
+	  return NULL;
+	}
+      dfa->used_bkref_map |= 1 << token->opr.idx;
+      tree = create_token_tree (dfa, NULL, NULL, token);
+      if (__glibc_unlikely (tree == NULL))
+	{
+	  *err = REG_ESPACE;
+	  return NULL;
+	}
+      ++dfa->nbackref;
+      dfa->has_mb_node = 1;
+      break;
+
+    case OP_OPEN_DUP_NUM:
+      if (syntax & RE_CONTEXT_INVALID_DUP)
+	{
+	  *err = REG_BADRPT;
+	  return NULL;
+	}
+      FALLTHROUGH;
+    case OP_DUP_ASTERISK:
+    case OP_DUP_PLUS:
+    case OP_DUP_QUESTION:
+      if (syntax & RE_CONTEXT_INVALID_OPS)
+	{
+	  *err = REG_BADRPT;
+	  return NULL;
+	}
+      else if (syntax & RE_CONTEXT_INDEP_OPS)
+	{
+	  fetch_token (token, regexp, syntax);
+	  return parse_expression (regexp, preg, token, syntax, nest, err);
+	}
+      FALLTHROUGH;
+    case OP_CLOSE_SUBEXP:
+      if ((token->type == OP_CLOSE_SUBEXP)
+	  && !(syntax & RE_UNMATCHED_RIGHT_PAREN_ORD))
+	{
+	  *err = REG_ERPAREN;
+	  return NULL;
+	}
+      FALLTHROUGH;
+    case OP_CLOSE_DUP_NUM:
+      /* We treat it as a normal character.  */
+
+      /* Then we can these characters as normal characters.  */
+      token->type = CHARACTER;
+      /* mb_partial and word_char bits should be initialized already
+	 by peek_token.  */
+      tree = create_token_tree (dfa, NULL, NULL, token);
+      if (__glibc_unlikely (tree == NULL))
+	{
+	  *err = REG_ESPACE;
+	  return NULL;
+	}
+      break;
+
+    case ANCHOR:
+      if ((token->opr.ctx_type
+	   & (WORD_DELIM | NOT_WORD_DELIM | WORD_FIRST | WORD_LAST))
+	  && dfa->word_ops_used == 0)
+	init_word_char (dfa);
+      if (token->opr.ctx_type == WORD_DELIM
+	  || token->opr.ctx_type == NOT_WORD_DELIM)
+	{
+	  bin_tree_t *tree_first, *tree_last;
+	  if (token->opr.ctx_type == WORD_DELIM)
+	    {
+	      token->opr.ctx_type = WORD_FIRST;
+	      tree_first = create_token_tree (dfa, NULL, NULL, token);
+	      token->opr.ctx_type = WORD_LAST;
+	    }
+	  else
+	    {
+	      token->opr.ctx_type = INSIDE_WORD;
+	      tree_first = create_token_tree (dfa, NULL, NULL, token);
+	      token->opr.ctx_type = INSIDE_NOTWORD;
+	    }
+	  tree_last = create_token_tree (dfa, NULL, NULL, token);
+	  tree = create_tree (dfa, tree_first, tree_last, OP_ALT);
+	  if (__glibc_unlikely (tree_first == NULL || tree_last == NULL
+				|| tree == NULL))
+	    {
+	      *err = REG_ESPACE;
+	      return NULL;
+	    }
+	}
+      else
+	{
+	  tree = create_token_tree (dfa, NULL, NULL, token);
+	  if (__glibc_unlikely (tree == NULL))
+	    {
+	      *err = REG_ESPACE;
+	      return NULL;
+	    }
+	}
+      /* We must return here, since ANCHORs can't be followed
+	 by repetition operators.
+	 eg. RE"^*" is invalid or "<ANCHOR(^)><CHAR(*)>",
+	     it must not be "<ANCHOR(^)><REPEAT(*)>".  */
+      fetch_token (token, regexp, syntax);
+      return tree;
+
+    case OP_PERIOD:
+      tree = create_token_tree (dfa, NULL, NULL, token);
+      if (__glibc_unlikely (tree == NULL))
+	{
+	  *err = REG_ESPACE;
+	  return NULL;
+	}
+      if (dfa->mb_cur_max > 1)
+	dfa->has_mb_node = 1;
+      break;
+
+    case OP_WORD:
+    case OP_NOTWORD:
+      tree = build_charclass_op (dfa, regexp->trans,
+				 "alnum",
+				 "_",
+				 token->type == OP_NOTWORD, err);
+      if (__glibc_unlikely (*err != REG_NOERROR && tree == NULL))
+	return NULL;
+      break;
+
+    case OP_SPACE:
+    case OP_NOTSPACE:
+      tree = build_charclass_op (dfa, regexp->trans,
+				 "space",
+				 "",
+				 token->type == OP_NOTSPACE, err);
+      if (__glibc_unlikely (*err != REG_NOERROR && tree == NULL))
+	return NULL;
+      break;
+
+    case OP_ALT:
+    case END_OF_RE:
+      return NULL;
+
+    case BACK_SLASH:
+      *err = REG_EESCAPE;
+      return NULL;
+
+    default:
+      /* Must not happen?  */
+      DEBUG_ASSERT (false);
+      return NULL;
+    }
+  fetch_token (token, regexp, syntax);
+
+  while (token->type == OP_DUP_ASTERISK || token->type == OP_DUP_PLUS
+	 || token->type == OP_DUP_QUESTION || token->type == OP_OPEN_DUP_NUM)
+    {
+      bin_tree_t *dup_tree = parse_dup_op (tree, regexp, dfa, token,
+					   syntax, err);
+      if (__glibc_unlikely (*err != REG_NOERROR && dup_tree == NULL))
+	{
+	  if (tree != NULL)
+	    postorder (tree, free_tree, NULL);
+	  return NULL;
+	}
+      tree = dup_tree;
+      /* In BRE consecutive duplications are not allowed.  */
+      if ((syntax & RE_CONTEXT_INVALID_DUP)
+	  && (token->type == OP_DUP_ASTERISK
+	      || token->type == OP_OPEN_DUP_NUM))
+	{
+	  if (tree != NULL)
+	    postorder (tree, free_tree, NULL);
+	  *err = REG_BADRPT;
+	  return NULL;
+	}
+    }
+
+  return tree;
+}
+
+/* This function build the following tree, from regular expression
+   (<reg_exp>):
+	 SUBEXP
+	    |
+	<reg_exp>
+*/
+
+static bin_tree_t *
+parse_sub_exp (re_string_t *regexp, regex_t *preg, re_token_t *token,
+	       reg_syntax_t syntax, Idx nest, reg_errcode_t *err)
+{
+  re_dfa_t *dfa = preg->buffer;
+  bin_tree_t *tree;
+  size_t cur_nsub;
+  cur_nsub = preg->re_nsub++;
+
+  fetch_token (token, regexp, syntax | RE_CARET_ANCHORS_HERE);
+
+  /* The subexpression may be a null string.  */
+  if (token->type == OP_CLOSE_SUBEXP)
+    tree = NULL;
+  else
+    {
+      tree = parse_reg_exp (regexp, preg, token, syntax, nest, err);
+      if (__glibc_unlikely (*err == REG_NOERROR
+			    && token->type != OP_CLOSE_SUBEXP))
+	{
+	  if (tree != NULL)
+	    postorder (tree, free_tree, NULL);
+	  *err = REG_EPAREN;
+	}
+      if (__glibc_unlikely (*err != REG_NOERROR))
+	return NULL;
+    }
+
+  if (cur_nsub <= '9' - '1')
+    dfa->completed_bkref_map |= 1 << cur_nsub;
+
+  tree = create_tree (dfa, tree, NULL, SUBEXP);
+  if (__glibc_unlikely (tree == NULL))
+    {
+      *err = REG_ESPACE;
+      return NULL;
+    }
+  tree->token.opr.idx = cur_nsub;
+  return tree;
+}
+
+/* This function parse repetition operators like "*", "+", "{1,3}" etc.  */
+
+static bin_tree_t *
+parse_dup_op (bin_tree_t *elem, re_string_t *regexp, re_dfa_t *dfa,
+	      re_token_t *token, reg_syntax_t syntax, reg_errcode_t *err)
+{
+  bin_tree_t *tree = NULL, *old_tree = NULL;
+  Idx i, start, end, start_idx = re_string_cur_idx (regexp);
+  re_token_t start_token = *token;
+
+  if (token->type == OP_OPEN_DUP_NUM)
+    {
+      end = 0;
+      start = fetch_number (regexp, token, syntax);
+      if (start == -1)
+	{
+	  if (token->type == CHARACTER && token->opr.c == ',')
+	    start = 0; /* We treat "{,m}" as "{0,m}".  */
+	  else
+	    {
+	      *err = REG_BADBR; /* <re>{} is invalid.  */
+	      return NULL;
+	    }
+	}
+      if (__glibc_likely (start != -2))
+	{
+	  /* We treat "{n}" as "{n,n}".  */
+	  end = ((token->type == OP_CLOSE_DUP_NUM) ? start
+		 : ((token->type == CHARACTER && token->opr.c == ',')
+		    ? fetch_number (regexp, token, syntax) : -2));
+	}
+      if (__glibc_unlikely (start == -2 || end == -2))
+	{
+	  /* Invalid sequence.  */
+	  if (__glibc_unlikely (!(syntax & RE_INVALID_INTERVAL_ORD)))
+	    {
+	      if (token->type == END_OF_RE)
+		*err = REG_EBRACE;
+	      else
+		*err = REG_BADBR;
+
+	      return NULL;
+	    }
+
+	  /* If the syntax bit is set, rollback.  */
+	  re_string_set_index (regexp, start_idx);
+	  *token = start_token;
+	  token->type = CHARACTER;
+	  /* mb_partial and word_char bits should be already initialized by
+	     peek_token.  */
+	  return elem;
+	}
+
+      if (__glibc_unlikely ((end != -1 && start > end)
+			    || token->type != OP_CLOSE_DUP_NUM))
+	{
+	  /* First number greater than second.  */
+	  *err = REG_BADBR;
+	  return NULL;
+	}
+
+      if (__glibc_unlikely (RE_DUP_MAX < (end == -1 ? start : end)))
+	{
+	  *err = REG_ESIZE;
+	  return NULL;
+	}
+    }
+  else
+    {
+      start = (token->type == OP_DUP_PLUS) ? 1 : 0;
+      end = (token->type == OP_DUP_QUESTION) ? 1 : -1;
+    }
+
+  fetch_token (token, regexp, syntax);
+
+  if (__glibc_unlikely (elem == NULL))
+    return NULL;
+  if (__glibc_unlikely (start == 0 && end == 0))
+    {
+      postorder (elem, free_tree, NULL);
+      return NULL;
+    }
+
+  /* Extract "<re>{n,m}" to "<re><re>...<re><re>{0,<m-n>}".  */
+  if (__glibc_unlikely (start > 0))
+    {
+      tree = elem;
+      for (i = 2; i <= start; ++i)
+	{
+	  elem = duplicate_tree (elem, dfa);
+	  tree = create_tree (dfa, tree, elem, CONCAT);
+	  if (__glibc_unlikely (elem == NULL || tree == NULL))
+	    goto parse_dup_op_espace;
+	}
+
+      if (start == end)
+	return tree;
+
+      /* Duplicate ELEM before it is marked optional.  */
+      elem = duplicate_tree (elem, dfa);
+      if (__glibc_unlikely (elem == NULL))
+        goto parse_dup_op_espace;
+      old_tree = tree;
+    }
+  else
+    old_tree = NULL;
+
+  if (elem->token.type == SUBEXP)
+    {
+      uintptr_t subidx = elem->token.opr.idx;
+      postorder (elem, mark_opt_subexp, (void *) subidx);
+    }
+
+  tree = create_tree (dfa, elem, NULL,
+		      (end == -1 ? OP_DUP_ASTERISK : OP_ALT));
+  if (__glibc_unlikely (tree == NULL))
+    goto parse_dup_op_espace;
+
+  /* This loop is actually executed only when end != -1,
+     to rewrite <re>{0,n} as (<re>(<re>...<re>?)?)?...  We have
+     already created the start+1-th copy.  */
+  if (TYPE_SIGNED (Idx) || end != -1)
+    for (i = start + 2; i <= end; ++i)
+      {
+	elem = duplicate_tree (elem, dfa);
+	tree = create_tree (dfa, tree, elem, CONCAT);
+	if (__glibc_unlikely (elem == NULL || tree == NULL))
+	  goto parse_dup_op_espace;
+
+	tree = create_tree (dfa, tree, NULL, OP_ALT);
+	if (__glibc_unlikely (tree == NULL))
+	  goto parse_dup_op_espace;
+      }
+
+  if (old_tree)
+    tree = create_tree (dfa, old_tree, tree, CONCAT);
+
+  return tree;
+
+ parse_dup_op_espace:
+  *err = REG_ESPACE;
+  return NULL;
+}
+
+/* Size of the names for collating symbol/equivalence_class/character_class.
+   I'm not sure, but maybe enough.  */
+#define BRACKET_NAME_BUF_SIZE 32
+
+#ifndef _LIBC
+
+# ifdef RE_ENABLE_I18N
+/* Convert the byte B to the corresponding wide character.  In a
+   unibyte locale, treat B as itself.  In a multibyte locale, return
+   WEOF if B is an encoding error.  */
+static wint_t
+parse_byte (unsigned char b, re_charset_t *mbcset)
+{
+  return mbcset == NULL ? b : __btowc (b);
+}
+# endif
+
+  /* Local function for parse_bracket_exp only used in case of NOT _LIBC.
+     Build the range expression which starts from START_ELEM, and ends
+     at END_ELEM.  The result are written to MBCSET and SBCSET.
+     RANGE_ALLOC is the allocated size of mbcset->range_starts, and
+     mbcset->range_ends, is a pointer argument since we may
+     update it.  */
+
+static reg_errcode_t
+# ifdef RE_ENABLE_I18N
+build_range_exp (const reg_syntax_t syntax,
+                 bitset_t sbcset,
+                 re_charset_t *mbcset,
+                 Idx *range_alloc,
+                 const bracket_elem_t *start_elem,
+                 const bracket_elem_t *end_elem)
+# else /* not RE_ENABLE_I18N */
+build_range_exp (const reg_syntax_t syntax,
+                 bitset_t sbcset,
+                 const bracket_elem_t *start_elem,
+                 const bracket_elem_t *end_elem)
+# endif /* not RE_ENABLE_I18N */
+{
+  unsigned int start_ch, end_ch;
+  /* Equivalence Classes and Character Classes can't be a range start/end.  */
+  if (__glibc_unlikely (start_elem->type == EQUIV_CLASS
+			|| start_elem->type == CHAR_CLASS
+			|| end_elem->type == EQUIV_CLASS
+			|| end_elem->type == CHAR_CLASS))
+    return REG_ERANGE;
+
+  /* We can handle no multi character collating elements without libc
+     support.  */
+  if (__glibc_unlikely ((start_elem->type == COLL_SYM
+			 && strlen ((char *) start_elem->opr.name) > 1)
+			|| (end_elem->type == COLL_SYM
+			    && strlen ((char *) end_elem->opr.name) > 1)))
+    return REG_ECOLLATE;
+
+# ifdef RE_ENABLE_I18N
+  {
+    wchar_t wc;
+    wint_t start_wc;
+    wint_t end_wc;
+
+    start_ch = ((start_elem->type == SB_CHAR) ? start_elem->opr.ch
+		: ((start_elem->type == COLL_SYM) ? start_elem->opr.name[0]
+		   : 0));
+    end_ch = ((end_elem->type == SB_CHAR) ? end_elem->opr.ch
+	      : ((end_elem->type == COLL_SYM) ? end_elem->opr.name[0]
+		 : 0));
+    start_wc = ((start_elem->type == SB_CHAR || start_elem->type == COLL_SYM)
+		? parse_byte (start_ch, mbcset) : start_elem->opr.wch);
+    end_wc = ((end_elem->type == SB_CHAR || end_elem->type == COLL_SYM)
+	      ? parse_byte (end_ch, mbcset) : end_elem->opr.wch);
+    if (start_wc == WEOF || end_wc == WEOF)
+      return REG_ECOLLATE;
+    else if (__glibc_unlikely ((syntax & RE_NO_EMPTY_RANGES)
+			       && start_wc > end_wc))
+      return REG_ERANGE;
+
+    /* Got valid collation sequence values, add them as a new entry.
+       However, for !_LIBC we have no collation elements: if the
+       character set is single byte, the single byte character set
+       that we build below suffices.  parse_bracket_exp passes
+       no MBCSET if dfa->mb_cur_max == 1.  */
+    if (mbcset)
+      {
+	/* Check the space of the arrays.  */
+	if (__glibc_unlikely (*range_alloc == mbcset->nranges))
+	  {
+	    /* There is not enough space, need realloc.  */
+	    wchar_t *new_array_start, *new_array_end;
+	    Idx new_nranges;
+
+	    /* +1 in case of mbcset->nranges is 0.  */
+	    new_nranges = 2 * mbcset->nranges + 1;
+	    /* Use realloc since mbcset->range_starts and mbcset->range_ends
+	       are NULL if *range_alloc == 0.  */
+	    new_array_start = re_realloc (mbcset->range_starts, wchar_t,
+					  new_nranges);
+	    new_array_end = re_realloc (mbcset->range_ends, wchar_t,
+					new_nranges);
+
+	    if (__glibc_unlikely (new_array_start == NULL
+				  || new_array_end == NULL))
+	      {
+		re_free (new_array_start);
+		re_free (new_array_end);
+		return REG_ESPACE;
+	      }
+
+	    mbcset->range_starts = new_array_start;
+	    mbcset->range_ends = new_array_end;
+	    *range_alloc = new_nranges;
+	  }
+
+	mbcset->range_starts[mbcset->nranges] = start_wc;
+	mbcset->range_ends[mbcset->nranges++] = end_wc;
+      }
+
+    /* Build the table for single byte characters.  */
+    for (wc = 0; wc < SBC_MAX; ++wc)
+      {
+	if (start_wc <= wc && wc <= end_wc)
+	  bitset_set (sbcset, wc);
+      }
+  }
+# else /* not RE_ENABLE_I18N */
+  {
+    unsigned int ch;
+    start_ch = ((start_elem->type == SB_CHAR ) ? start_elem->opr.ch
+		: ((start_elem->type == COLL_SYM) ? start_elem->opr.name[0]
+		   : 0));
+    end_ch = ((end_elem->type == SB_CHAR ) ? end_elem->opr.ch
+	      : ((end_elem->type == COLL_SYM) ? end_elem->opr.name[0]
+		 : 0));
+    if (start_ch > end_ch)
+      return REG_ERANGE;
+    /* Build the table for single byte characters.  */
+    for (ch = 0; ch < SBC_MAX; ++ch)
+      if (start_ch <= ch  && ch <= end_ch)
+	bitset_set (sbcset, ch);
+  }
+# endif /* not RE_ENABLE_I18N */
+  return REG_NOERROR;
+}
+#endif /* not _LIBC */
+
+#ifndef _LIBC
+/* Helper function for parse_bracket_exp only used in case of NOT _LIBC..
+   Build the collating element which is represented by NAME.
+   The result are written to MBCSET and SBCSET.
+   COLL_SYM_ALLOC is the allocated size of mbcset->coll_sym, is a
+   pointer argument since we may update it.  */
+
+static reg_errcode_t
+# ifdef RE_ENABLE_I18N
+build_collating_symbol (bitset_t sbcset, re_charset_t *mbcset,
+			Idx *coll_sym_alloc, const unsigned char *name)
+# else /* not RE_ENABLE_I18N */
+build_collating_symbol (bitset_t sbcset, const unsigned char *name)
+# endif /* not RE_ENABLE_I18N */
+{
+  size_t name_len = strlen ((const char *) name);
+  if (__glibc_unlikely (name_len != 1))
+    return REG_ECOLLATE;
+  else
+    {
+      bitset_set (sbcset, name[0]);
+      return REG_NOERROR;
+    }
+}
+#endif /* not _LIBC */
+
+/* This function parse bracket expression like "[abc]", "[a-c]",
+   "[[.a-a.]]" etc.  */
+
+static bin_tree_t *
+parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
+		   reg_syntax_t syntax, reg_errcode_t *err)
+{
+#ifdef _LIBC
+  const unsigned char *collseqmb;
+  const char *collseqwc;
+  uint32_t nrules;
+  int32_t table_size;
+  const int32_t *symb_table;
+  const unsigned char *extra;
+
+  /* Local function for parse_bracket_exp used in _LIBC environment.
+     Seek the collating symbol entry corresponding to NAME.
+     Return the index of the symbol in the SYMB_TABLE,
+     or -1 if not found.  */
+
+  auto inline int32_t
+  __attribute__ ((always_inline))
+  seek_collating_symbol_entry (const unsigned char *name, size_t name_len)
+    {
+      int32_t elem;
+
+      for (elem = 0; elem < table_size; elem++)
+	if (symb_table[2 * elem] != 0)
+	  {
+	    int32_t idx = symb_table[2 * elem + 1];
+	    /* Skip the name of collating element name.  */
+	    idx += 1 + extra[idx];
+	    if (/* Compare the length of the name.  */
+		name_len == extra[idx]
+		/* Compare the name.  */
+		&& memcmp (name, &extra[idx + 1], name_len) == 0)
+	      /* Yep, this is the entry.  */
+	      return elem;
+	  }
+      return -1;
+    }
+
+  /* Local function for parse_bracket_exp used in _LIBC environment.
+     Look up the collation sequence value of BR_ELEM.
+     Return the value if succeeded, UINT_MAX otherwise.  */
+
+  auto inline unsigned int
+  __attribute__ ((always_inline))
+  lookup_collation_sequence_value (bracket_elem_t *br_elem)
+    {
+      if (br_elem->type == SB_CHAR)
+	{
+	  /*
+	  if (MB_CUR_MAX == 1)
+	  */
+	  if (nrules == 0)
+	    return collseqmb[br_elem->opr.ch];
+	  else
+	    {
+	      wint_t wc = __btowc (br_elem->opr.ch);
+	      return __collseq_table_lookup (collseqwc, wc);
+	    }
+	}
+      else if (br_elem->type == MB_CHAR)
+	{
+	  if (nrules != 0)
+	    return __collseq_table_lookup (collseqwc, br_elem->opr.wch);
+	}
+      else if (br_elem->type == COLL_SYM)
+	{
+	  size_t sym_name_len = strlen ((char *) br_elem->opr.name);
+	  if (nrules != 0)
+	    {
+	      int32_t elem, idx;
+	      elem = seek_collating_symbol_entry (br_elem->opr.name,
+						  sym_name_len);
+	      if (elem != -1)
+		{
+		  /* We found the entry.  */
+		  idx = symb_table[2 * elem + 1];
+		  /* Skip the name of collating element name.  */
+		  idx += 1 + extra[idx];
+		  /* Skip the byte sequence of the collating element.  */
+		  idx += 1 + extra[idx];
+		  /* Adjust for the alignment.  */
+		  idx = (idx + 3) & ~3;
+		  /* Skip the multibyte collation sequence value.  */
+		  idx += sizeof (unsigned int);
+		  /* Skip the wide char sequence of the collating element.  */
+		  idx += sizeof (unsigned int) *
+		    (1 + *(unsigned int *) (extra + idx));
+		  /* Return the collation sequence value.  */
+		  return *(unsigned int *) (extra + idx);
+		}
+	      else if (sym_name_len == 1)
+		{
+		  /* No valid character.  Match it as a single byte
+		     character.  */
+		  return collseqmb[br_elem->opr.name[0]];
+		}
+	    }
+	  else if (sym_name_len == 1)
+	    return collseqmb[br_elem->opr.name[0]];
+	}
+      return UINT_MAX;
+    }
+
+  /* Local function for parse_bracket_exp used in _LIBC environment.
+     Build the range expression which starts from START_ELEM, and ends
+     at END_ELEM.  The result are written to MBCSET and SBCSET.
+     RANGE_ALLOC is the allocated size of mbcset->range_starts, and
+     mbcset->range_ends, is a pointer argument since we may
+     update it.  */
+
+  auto inline reg_errcode_t
+  __attribute__ ((always_inline))
+  build_range_exp (bitset_t sbcset, re_charset_t *mbcset, int *range_alloc,
+		   bracket_elem_t *start_elem, bracket_elem_t *end_elem)
+    {
+      unsigned int ch;
+      uint32_t start_collseq;
+      uint32_t end_collseq;
+
+      /* Equivalence Classes and Character Classes can't be a range
+	 start/end.  */
+      if (__glibc_unlikely (start_elem->type == EQUIV_CLASS
+			    || start_elem->type == CHAR_CLASS
+			    || end_elem->type == EQUIV_CLASS
+			    || end_elem->type == CHAR_CLASS))
+	return REG_ERANGE;
+
+      /* FIXME: Implement rational ranges here, too.  */
+      start_collseq = lookup_collation_sequence_value (start_elem);
+      end_collseq = lookup_collation_sequence_value (end_elem);
+      /* Check start/end collation sequence values.  */
+      if (__glibc_unlikely (start_collseq == UINT_MAX
+			    || end_collseq == UINT_MAX))
+	return REG_ECOLLATE;
+      if (__glibc_unlikely ((syntax & RE_NO_EMPTY_RANGES)
+			    && start_collseq > end_collseq))
+	return REG_ERANGE;
+
+      /* Got valid collation sequence values, add them as a new entry.
+	 However, if we have no collation elements, and the character set
+	 is single byte, the single byte character set that we
+	 build below suffices. */
+      if (nrules > 0 || dfa->mb_cur_max > 1)
+	{
+	  /* Check the space of the arrays.  */
+	  if (__glibc_unlikely (*range_alloc == mbcset->nranges))
+	    {
+	      /* There is not enough space, need realloc.  */
+	      uint32_t *new_array_start;
+	      uint32_t *new_array_end;
+	      Idx new_nranges;
+
+	      /* +1 in case of mbcset->nranges is 0.  */
+	      new_nranges = 2 * mbcset->nranges + 1;
+	      new_array_start = re_realloc (mbcset->range_starts, uint32_t,
+					    new_nranges);
+	      new_array_end = re_realloc (mbcset->range_ends, uint32_t,
+					  new_nranges);
+
+	      if (__glibc_unlikely (new_array_start == NULL
+				    || new_array_end == NULL))
+		return REG_ESPACE;
+
+	      mbcset->range_starts = new_array_start;
+	      mbcset->range_ends = new_array_end;
+	      *range_alloc = new_nranges;
+	    }
+
+	  mbcset->range_starts[mbcset->nranges] = start_collseq;
+	  mbcset->range_ends[mbcset->nranges++] = end_collseq;
+	}
+
+      /* Build the table for single byte characters.  */
+      for (ch = 0; ch < SBC_MAX; ch++)
+	{
+	  uint32_t ch_collseq;
+	  /*
+	  if (MB_CUR_MAX == 1)
+	  */
+	  if (nrules == 0)
+	    ch_collseq = collseqmb[ch];
+	  else
+	    ch_collseq = __collseq_table_lookup (collseqwc, __btowc (ch));
+	  if (start_collseq <= ch_collseq && ch_collseq <= end_collseq)
+	    bitset_set (sbcset, ch);
+	}
+      return REG_NOERROR;
+    }
+
+  /* Local function for parse_bracket_exp used in _LIBC environment.
+     Build the collating element which is represented by NAME.
+     The result are written to MBCSET and SBCSET.
+     COLL_SYM_ALLOC is the allocated size of mbcset->coll_sym, is a
+     pointer argument since we may update it.  */
+
+  auto inline reg_errcode_t
+  __attribute__ ((always_inline))
+  build_collating_symbol (bitset_t sbcset, re_charset_t *mbcset,
+			  Idx *coll_sym_alloc, const unsigned char *name)
+    {
+      int32_t elem, idx;
+      size_t name_len = strlen ((const char *) name);
+      if (nrules != 0)
+	{
+	  elem = seek_collating_symbol_entry (name, name_len);
+	  if (elem != -1)
+	    {
+	      /* We found the entry.  */
+	      idx = symb_table[2 * elem + 1];
+	      /* Skip the name of collating element name.  */
+	      idx += 1 + extra[idx];
+	    }
+	  else if (name_len == 1)
+	    {
+	      /* No valid character, treat it as a normal
+		 character.  */
+	      bitset_set (sbcset, name[0]);
+	      return REG_NOERROR;
+	    }
+	  else
+	    return REG_ECOLLATE;
+
+	  /* Got valid collation sequence, add it as a new entry.  */
+	  /* Check the space of the arrays.  */
+	  if (__glibc_unlikely (*coll_sym_alloc == mbcset->ncoll_syms))
+	    {
+	      /* Not enough, realloc it.  */
+	      /* +1 in case of mbcset->ncoll_syms is 0.  */
+	      Idx new_coll_sym_alloc = 2 * mbcset->ncoll_syms + 1;
+	      /* Use realloc since mbcset->coll_syms is NULL
+		 if *alloc == 0.  */
+	      int32_t *new_coll_syms = re_realloc (mbcset->coll_syms, int32_t,
+						   new_coll_sym_alloc);
+	      if (__glibc_unlikely (new_coll_syms == NULL))
+		return REG_ESPACE;
+	      mbcset->coll_syms = new_coll_syms;
+	      *coll_sym_alloc = new_coll_sym_alloc;
+	    }
+	  mbcset->coll_syms[mbcset->ncoll_syms++] = idx;
+	  return REG_NOERROR;
+	}
+      else
+	{
+	  if (__glibc_unlikely (name_len != 1))
+	    return REG_ECOLLATE;
+	  else
+	    {
+	      bitset_set (sbcset, name[0]);
+	      return REG_NOERROR;
+	    }
+	}
+    }
+#endif
+
+  re_token_t br_token;
+  re_bitset_ptr_t sbcset;
+#ifdef RE_ENABLE_I18N
+  re_charset_t *mbcset;
+  Idx coll_sym_alloc = 0, range_alloc = 0, mbchar_alloc = 0;
+  Idx equiv_class_alloc = 0, char_class_alloc = 0;
+#endif /* not RE_ENABLE_I18N */
+  bool non_match = false;
+  bin_tree_t *work_tree;
+  int token_len;
+  bool first_round = true;
+#ifdef _LIBC
+  collseqmb = (const unsigned char *)
+    _NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQMB);
+  nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
+  if (nrules)
+    {
+      /*
+      if (MB_CUR_MAX > 1)
+      */
+      collseqwc = _NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQWC);
+      table_size = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_SYMB_HASH_SIZEMB);
+      symb_table = (const int32_t *) _NL_CURRENT (LC_COLLATE,
+						  _NL_COLLATE_SYMB_TABLEMB);
+      extra = (const unsigned char *) _NL_CURRENT (LC_COLLATE,
+						   _NL_COLLATE_SYMB_EXTRAMB);
+    }
+#endif
+  sbcset = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 1);
+#ifdef RE_ENABLE_I18N
+  mbcset = (re_charset_t *) calloc (sizeof (re_charset_t), 1);
+#endif /* RE_ENABLE_I18N */
+#ifdef RE_ENABLE_I18N
+  if (__glibc_unlikely (sbcset == NULL || mbcset == NULL))
+#else
+  if (__glibc_unlikely (sbcset == NULL))
+#endif /* RE_ENABLE_I18N */
+    {
+      re_free (sbcset);
+#ifdef RE_ENABLE_I18N
+      re_free (mbcset);
+#endif
+      *err = REG_ESPACE;
+      return NULL;
+    }
+
+  token_len = peek_token_bracket (token, regexp, syntax);
+  if (__glibc_unlikely (token->type == END_OF_RE))
+    {
+      *err = REG_BADPAT;
+      goto parse_bracket_exp_free_return;
+    }
+  if (token->type == OP_NON_MATCH_LIST)
+    {
+#ifdef RE_ENABLE_I18N
+      mbcset->non_match = 1;
+#endif /* not RE_ENABLE_I18N */
+      non_match = true;
+      if (syntax & RE_HAT_LISTS_NOT_NEWLINE)
+	bitset_set (sbcset, '\n');
+      re_string_skip_bytes (regexp, token_len); /* Skip a token.  */
+      token_len = peek_token_bracket (token, regexp, syntax);
+      if (__glibc_unlikely (token->type == END_OF_RE))
+	{
+	  *err = REG_BADPAT;
+	  goto parse_bracket_exp_free_return;
+	}
+    }
+
+  /* We treat the first ']' as a normal character.  */
+  if (token->type == OP_CLOSE_BRACKET)
+    token->type = CHARACTER;
+
+  while (1)
+    {
+      bracket_elem_t start_elem, end_elem;
+      unsigned char start_name_buf[BRACKET_NAME_BUF_SIZE];
+      unsigned char end_name_buf[BRACKET_NAME_BUF_SIZE];
+      reg_errcode_t ret;
+      int token_len2 = 0;
+      bool is_range_exp = false;
+      re_token_t token2;
+
+      start_elem.opr.name = start_name_buf;
+      start_elem.type = COLL_SYM;
+      ret = parse_bracket_element (&start_elem, regexp, token, token_len, dfa,
+				   syntax, first_round);
+      if (__glibc_unlikely (ret != REG_NOERROR))
+	{
+	  *err = ret;
+	  goto parse_bracket_exp_free_return;
+	}
+      first_round = false;
+
+      /* Get information about the next token.  We need it in any case.  */
+      token_len = peek_token_bracket (token, regexp, syntax);
+
+      /* Do not check for ranges if we know they are not allowed.  */
+      if (start_elem.type != CHAR_CLASS && start_elem.type != EQUIV_CLASS)
+	{
+	  if (__glibc_unlikely (token->type == END_OF_RE))
+	    {
+	      *err = REG_EBRACK;
+	      goto parse_bracket_exp_free_return;
+	    }
+	  if (token->type == OP_CHARSET_RANGE)
+	    {
+	      re_string_skip_bytes (regexp, token_len); /* Skip '-'.  */
+	      token_len2 = peek_token_bracket (&token2, regexp, syntax);
+	      if (__glibc_unlikely (token2.type == END_OF_RE))
+		{
+		  *err = REG_EBRACK;
+		  goto parse_bracket_exp_free_return;
+		}
+	      if (token2.type == OP_CLOSE_BRACKET)
+		{
+		  /* We treat the last '-' as a normal character.  */
+		  re_string_skip_bytes (regexp, -token_len);
+		  token->type = CHARACTER;
+		}
+	      else
+		is_range_exp = true;
+	    }
+	}
+
+      if (is_range_exp == true)
+	{
+	  end_elem.opr.name = end_name_buf;
+	  end_elem.type = COLL_SYM;
+	  ret = parse_bracket_element (&end_elem, regexp, &token2, token_len2,
+				       dfa, syntax, true);
+	  if (__glibc_unlikely (ret != REG_NOERROR))
+	    {
+	      *err = ret;
+	      goto parse_bracket_exp_free_return;
+	    }
+
+	  token_len = peek_token_bracket (token, regexp, syntax);
+
+#ifdef _LIBC
+	  *err = build_range_exp (sbcset, mbcset, &range_alloc,
+				  &start_elem, &end_elem);
+#else
+# ifdef RE_ENABLE_I18N
+	  *err = build_range_exp (syntax, sbcset,
+				  dfa->mb_cur_max > 1 ? mbcset : NULL,
+				  &range_alloc, &start_elem, &end_elem);
+# else
+	  *err = build_range_exp (syntax, sbcset, &start_elem, &end_elem);
+# endif
+#endif /* RE_ENABLE_I18N */
+	  if (__glibc_unlikely (*err != REG_NOERROR))
+	    goto parse_bracket_exp_free_return;
+	}
+      else
+	{
+	  switch (start_elem.type)
+	    {
+	    case SB_CHAR:
+	      bitset_set (sbcset, start_elem.opr.ch);
+	      break;
+#ifdef RE_ENABLE_I18N
+	    case MB_CHAR:
+	      /* Check whether the array has enough space.  */
+	      if (__glibc_unlikely (mbchar_alloc == mbcset->nmbchars))
+		{
+		  wchar_t *new_mbchars;
+		  /* Not enough, realloc it.  */
+		  /* +1 in case of mbcset->nmbchars is 0.  */
+		  mbchar_alloc = 2 * mbcset->nmbchars + 1;
+		  /* Use realloc since array is NULL if *alloc == 0.  */
+		  new_mbchars = re_realloc (mbcset->mbchars, wchar_t,
+					    mbchar_alloc);
+		  if (__glibc_unlikely (new_mbchars == NULL))
+		    goto parse_bracket_exp_espace;
+		  mbcset->mbchars = new_mbchars;
+		}
+	      mbcset->mbchars[mbcset->nmbchars++] = start_elem.opr.wch;
+	      break;
+#endif /* RE_ENABLE_I18N */
+	    case EQUIV_CLASS:
+	      *err = build_equiv_class (sbcset,
+#ifdef RE_ENABLE_I18N
+					mbcset, &equiv_class_alloc,
+#endif /* RE_ENABLE_I18N */
+					start_elem.opr.name);
+	      if (__glibc_unlikely (*err != REG_NOERROR))
+		goto parse_bracket_exp_free_return;
+	      break;
+	    case COLL_SYM:
+	      *err = build_collating_symbol (sbcset,
+#ifdef RE_ENABLE_I18N
+					     mbcset, &coll_sym_alloc,
+#endif /* RE_ENABLE_I18N */
+					     start_elem.opr.name);
+	      if (__glibc_unlikely (*err != REG_NOERROR))
+		goto parse_bracket_exp_free_return;
+	      break;
+	    case CHAR_CLASS:
+	      *err = build_charclass (regexp->trans, sbcset,
+#ifdef RE_ENABLE_I18N
+				      mbcset, &char_class_alloc,
+#endif /* RE_ENABLE_I18N */
+				      (const char *) start_elem.opr.name,
+				      syntax);
+	      if (__glibc_unlikely (*err != REG_NOERROR))
+	       goto parse_bracket_exp_free_return;
+	      break;
+	    default:
+	      DEBUG_ASSERT (false);
+	      break;
+	    }
+	}
+      if (__glibc_unlikely (token->type == END_OF_RE))
+	{
+	  *err = REG_EBRACK;
+	  goto parse_bracket_exp_free_return;
+	}
+      if (token->type == OP_CLOSE_BRACKET)
+	break;
+    }
+
+  re_string_skip_bytes (regexp, token_len); /* Skip a token.  */
+
+  /* If it is non-matching list.  */
+  if (non_match)
+    bitset_not (sbcset);
+
+#ifdef RE_ENABLE_I18N
+  /* Ensure only single byte characters are set.  */
+  if (dfa->mb_cur_max > 1)
+    bitset_mask (sbcset, dfa->sb_char);
+
+  if (mbcset->nmbchars || mbcset->ncoll_syms || mbcset->nequiv_classes
+      || mbcset->nranges || (dfa->mb_cur_max > 1 && (mbcset->nchar_classes
+						     || mbcset->non_match)))
+    {
+      bin_tree_t *mbc_tree;
+      int sbc_idx;
+      /* Build a tree for complex bracket.  */
+      dfa->has_mb_node = 1;
+      br_token.type = COMPLEX_BRACKET;
+      br_token.opr.mbcset = mbcset;
+      mbc_tree = create_token_tree (dfa, NULL, NULL, &br_token);
+      if (__glibc_unlikely (mbc_tree == NULL))
+	goto parse_bracket_exp_espace;
+      for (sbc_idx = 0; sbc_idx < BITSET_WORDS; ++sbc_idx)
+	if (sbcset[sbc_idx])
+	  break;
+      /* If there are no bits set in sbcset, there is no point
+	 of having both SIMPLE_BRACKET and COMPLEX_BRACKET.  */
+      if (sbc_idx < BITSET_WORDS)
+	{
+	  /* Build a tree for simple bracket.  */
+	  br_token.type = SIMPLE_BRACKET;
+	  br_token.opr.sbcset = sbcset;
+	  work_tree = create_token_tree (dfa, NULL, NULL, &br_token);
+	  if (__glibc_unlikely (work_tree == NULL))
+	    goto parse_bracket_exp_espace;
+
+	  /* Then join them by ALT node.  */
+	  work_tree = create_tree (dfa, work_tree, mbc_tree, OP_ALT);
+	  if (__glibc_unlikely (work_tree == NULL))
+	    goto parse_bracket_exp_espace;
+	}
+      else
+	{
+	  re_free (sbcset);
+	  work_tree = mbc_tree;
+	}
+    }
+  else
+#endif /* not RE_ENABLE_I18N */
+    {
+#ifdef RE_ENABLE_I18N
+      free_charset (mbcset);
+#endif
+      /* Build a tree for simple bracket.  */
+      br_token.type = SIMPLE_BRACKET;
+      br_token.opr.sbcset = sbcset;
+      work_tree = create_token_tree (dfa, NULL, NULL, &br_token);
+      if (__glibc_unlikely (work_tree == NULL))
+	goto parse_bracket_exp_espace;
+    }
+  return work_tree;
+
+ parse_bracket_exp_espace:
+  *err = REG_ESPACE;
+ parse_bracket_exp_free_return:
+  re_free (sbcset);
+#ifdef RE_ENABLE_I18N
+  free_charset (mbcset);
+#endif /* RE_ENABLE_I18N */
+  return NULL;
+}
+
+/* Parse an element in the bracket expression.  */
+
+static reg_errcode_t
+parse_bracket_element (bracket_elem_t *elem, re_string_t *regexp,
+		       re_token_t *token, int token_len, re_dfa_t *dfa,
+		       reg_syntax_t syntax, bool accept_hyphen)
+{
+#ifdef RE_ENABLE_I18N
+  int cur_char_size;
+  cur_char_size = re_string_char_size_at (regexp, re_string_cur_idx (regexp));
+  if (cur_char_size > 1)
+    {
+      elem->type = MB_CHAR;
+      elem->opr.wch = re_string_wchar_at (regexp, re_string_cur_idx (regexp));
+      re_string_skip_bytes (regexp, cur_char_size);
+      return REG_NOERROR;
+    }
+#endif /* RE_ENABLE_I18N */
+  re_string_skip_bytes (regexp, token_len); /* Skip a token.  */
+  if (token->type == OP_OPEN_COLL_ELEM || token->type == OP_OPEN_CHAR_CLASS
+      || token->type == OP_OPEN_EQUIV_CLASS)
+    return parse_bracket_symbol (elem, regexp, token);
+  if (__glibc_unlikely (token->type == OP_CHARSET_RANGE) && !accept_hyphen)
+    {
+      /* A '-' must only appear as anything but a range indicator before
+	 the closing bracket.  Everything else is an error.  */
+      re_token_t token2;
+      (void) peek_token_bracket (&token2, regexp, syntax);
+      if (token2.type != OP_CLOSE_BRACKET)
+	/* The actual error value is not standardized since this whole
+	   case is undefined.  But ERANGE makes good sense.  */
+	return REG_ERANGE;
+    }
+  elem->type = SB_CHAR;
+  elem->opr.ch = token->opr.c;
+  return REG_NOERROR;
+}
+
+/* Parse a bracket symbol in the bracket expression.  Bracket symbols are
+   such as [:<character_class>:], [.<collating_element>.], and
+   [=<equivalent_class>=].  */
+
+static reg_errcode_t
+parse_bracket_symbol (bracket_elem_t *elem, re_string_t *regexp,
+		      re_token_t *token)
+{
+  unsigned char ch, delim = token->opr.c;
+  int i = 0;
+  if (re_string_eoi(regexp))
+    return REG_EBRACK;
+  for (;; ++i)
+    {
+      if (i >= BRACKET_NAME_BUF_SIZE)
+	return REG_EBRACK;
+      if (token->type == OP_OPEN_CHAR_CLASS)
+	ch = re_string_fetch_byte_case (regexp);
+      else
+	ch = re_string_fetch_byte (regexp);
+      if (re_string_eoi(regexp))
+	return REG_EBRACK;
+      if (ch == delim && re_string_peek_byte (regexp, 0) == ']')
+	break;
+      elem->opr.name[i] = ch;
+    }
+  re_string_skip_bytes (regexp, 1);
+  elem->opr.name[i] = '\0';
+  switch (token->type)
+    {
+    case OP_OPEN_COLL_ELEM:
+      elem->type = COLL_SYM;
+      break;
+    case OP_OPEN_EQUIV_CLASS:
+      elem->type = EQUIV_CLASS;
+      break;
+    case OP_OPEN_CHAR_CLASS:
+      elem->type = CHAR_CLASS;
+      break;
+    default:
+      break;
+    }
+  return REG_NOERROR;
+}
+
+  /* Helper function for parse_bracket_exp.
+     Build the equivalence class which is represented by NAME.
+     The result are written to MBCSET and SBCSET.
+     EQUIV_CLASS_ALLOC is the allocated size of mbcset->equiv_classes,
+     is a pointer argument since we may update it.  */
+
+static reg_errcode_t
+#ifdef RE_ENABLE_I18N
+build_equiv_class (bitset_t sbcset, re_charset_t *mbcset,
+		   Idx *equiv_class_alloc, const unsigned char *name)
+#else /* not RE_ENABLE_I18N */
+build_equiv_class (bitset_t sbcset, const unsigned char *name)
+#endif /* not RE_ENABLE_I18N */
+{
+#ifdef _LIBC
+  uint32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
+  if (nrules != 0)
+    {
+      const int32_t *table, *indirect;
+      const unsigned char *weights, *extra, *cp;
+      unsigned char char_buf[2];
+      int32_t idx1, idx2;
+      unsigned int ch;
+      size_t len;
+      /* Calculate the index for equivalence class.  */
+      cp = name;
+      table = (const int32_t *) _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
+      weights = (const unsigned char *) _NL_CURRENT (LC_COLLATE,
+					       _NL_COLLATE_WEIGHTMB);
+      extra = (const unsigned char *) _NL_CURRENT (LC_COLLATE,
+						   _NL_COLLATE_EXTRAMB);
+      indirect = (const int32_t *) _NL_CURRENT (LC_COLLATE,
+						_NL_COLLATE_INDIRECTMB);
+      idx1 = findidx (table, indirect, extra, &cp, -1);
+      if (__glibc_unlikely (idx1 == 0 || *cp != '\0'))
+	/* This isn't a valid character.  */
+	return REG_ECOLLATE;
+
+      /* Build single byte matching table for this equivalence class.  */
+      len = weights[idx1 & 0xffffff];
+      for (ch = 0; ch < SBC_MAX; ++ch)
+	{
+	  char_buf[0] = ch;
+	  cp = char_buf;
+	  idx2 = findidx (table, indirect, extra, &cp, 1);
+/*
+	  idx2 = table[ch];
+*/
+	  if (idx2 == 0)
+	    /* This isn't a valid character.  */
+	    continue;
+	  /* Compare only if the length matches and the collation rule
+	     index is the same.  */
+	  if (len == weights[idx2 & 0xffffff] && (idx1 >> 24) == (idx2 >> 24)
+	      && memcmp (weights + (idx1 & 0xffffff) + 1,
+			 weights + (idx2 & 0xffffff) + 1, len) == 0)
+	    bitset_set (sbcset, ch);
+	}
+      /* Check whether the array has enough space.  */
+      if (__glibc_unlikely (*equiv_class_alloc == mbcset->nequiv_classes))
+	{
+	  /* Not enough, realloc it.  */
+	  /* +1 in case of mbcset->nequiv_classes is 0.  */
+	  Idx new_equiv_class_alloc = 2 * mbcset->nequiv_classes + 1;
+	  /* Use realloc since the array is NULL if *alloc == 0.  */
+	  int32_t *new_equiv_classes = re_realloc (mbcset->equiv_classes,
+						   int32_t,
+						   new_equiv_class_alloc);
+	  if (__glibc_unlikely (new_equiv_classes == NULL))
+	    return REG_ESPACE;
+	  mbcset->equiv_classes = new_equiv_classes;
+	  *equiv_class_alloc = new_equiv_class_alloc;
+	}
+      mbcset->equiv_classes[mbcset->nequiv_classes++] = idx1;
+    }
+  else
+#endif /* _LIBC */
+    {
+      if (__glibc_unlikely (strlen ((const char *) name) != 1))
+	return REG_ECOLLATE;
+      bitset_set (sbcset, *name);
+    }
+  return REG_NOERROR;
+}
+
+  /* Helper function for parse_bracket_exp.
+     Build the character class which is represented by NAME.
+     The result are written to MBCSET and SBCSET.
+     CHAR_CLASS_ALLOC is the allocated size of mbcset->char_classes,
+     is a pointer argument since we may update it.  */
+
+static reg_errcode_t
+#ifdef RE_ENABLE_I18N
+build_charclass (RE_TRANSLATE_TYPE trans, bitset_t sbcset,
+		 re_charset_t *mbcset, Idx *char_class_alloc,
+		 const char *class_name, reg_syntax_t syntax)
+#else /* not RE_ENABLE_I18N */
+build_charclass (RE_TRANSLATE_TYPE trans, bitset_t sbcset,
+		 const char *class_name, reg_syntax_t syntax)
+#endif /* not RE_ENABLE_I18N */
+{
+  int i;
+  const char *name = class_name;
+
+  /* In case of REG_ICASE "upper" and "lower" match the both of
+     upper and lower cases.  */
+  if ((syntax & RE_ICASE)
+      && (strcmp (name, "upper") == 0 || strcmp (name, "lower") == 0))
+    name = "alpha";
+
+#ifdef RE_ENABLE_I18N
+  /* Check the space of the arrays.  */
+  if (__glibc_unlikely (*char_class_alloc == mbcset->nchar_classes))
+    {
+      /* Not enough, realloc it.  */
+      /* +1 in case of mbcset->nchar_classes is 0.  */
+      Idx new_char_class_alloc = 2 * mbcset->nchar_classes + 1;
+      /* Use realloc since array is NULL if *alloc == 0.  */
+      wctype_t *new_char_classes = re_realloc (mbcset->char_classes, wctype_t,
+					       new_char_class_alloc);
+      if (__glibc_unlikely (new_char_classes == NULL))
+	return REG_ESPACE;
+      mbcset->char_classes = new_char_classes;
+      *char_class_alloc = new_char_class_alloc;
+    }
+  mbcset->char_classes[mbcset->nchar_classes++] = __wctype (name);
+#endif /* RE_ENABLE_I18N */
+
+#define BUILD_CHARCLASS_LOOP(ctype_func)	\
+  do {						\
+    if (__glibc_unlikely (trans != NULL))			\
+      {						\
+	for (i = 0; i < SBC_MAX; ++i)		\
+	  if (ctype_func (i))			\
+	    bitset_set (sbcset, trans[i]);	\
+      }						\
+    else					\
+      {						\
+	for (i = 0; i < SBC_MAX; ++i)		\
+	  if (ctype_func (i))			\
+	    bitset_set (sbcset, i);		\
+      }						\
+  } while (0)
+
+  if (strcmp (name, "alnum") == 0)
+    BUILD_CHARCLASS_LOOP (isalnum);
+  else if (strcmp (name, "cntrl") == 0)
+    BUILD_CHARCLASS_LOOP (iscntrl);
+  else if (strcmp (name, "lower") == 0)
+    BUILD_CHARCLASS_LOOP (islower);
+  else if (strcmp (name, "space") == 0)
+    BUILD_CHARCLASS_LOOP (isspace);
+  else if (strcmp (name, "alpha") == 0)
+    BUILD_CHARCLASS_LOOP (isalpha);
+  else if (strcmp (name, "digit") == 0)
+    BUILD_CHARCLASS_LOOP (isdigit);
+  else if (strcmp (name, "print") == 0)
+    BUILD_CHARCLASS_LOOP (isprint);
+  else if (strcmp (name, "upper") == 0)
+    BUILD_CHARCLASS_LOOP (isupper);
+  else if (strcmp (name, "blank") == 0)
+    BUILD_CHARCLASS_LOOP (isblank);
+  else if (strcmp (name, "graph") == 0)
+    BUILD_CHARCLASS_LOOP (isgraph);
+  else if (strcmp (name, "punct") == 0)
+    BUILD_CHARCLASS_LOOP (ispunct);
+  else if (strcmp (name, "xdigit") == 0)
+    BUILD_CHARCLASS_LOOP (isxdigit);
+  else
+    return REG_ECTYPE;
+
+  return REG_NOERROR;
+}
+
+static bin_tree_t *
+build_charclass_op (re_dfa_t *dfa, RE_TRANSLATE_TYPE trans,
+		    const char *class_name,
+		    const char *extra, bool non_match,
+		    reg_errcode_t *err)
+{
+  re_bitset_ptr_t sbcset;
+#ifdef RE_ENABLE_I18N
+  re_charset_t *mbcset;
+  Idx alloc = 0;
+#endif /* not RE_ENABLE_I18N */
+  reg_errcode_t ret;
+  bin_tree_t *tree;
+
+  sbcset = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 1);
+  if (__glibc_unlikely (sbcset == NULL))
+    {
+      *err = REG_ESPACE;
+      return NULL;
+    }
+#ifdef RE_ENABLE_I18N
+  mbcset = (re_charset_t *) calloc (sizeof (re_charset_t), 1);
+  if (__glibc_unlikely (mbcset == NULL))
+    {
+      re_free (sbcset);
+      *err = REG_ESPACE;
+      return NULL;
+    }
+  mbcset->non_match = non_match;
+#endif /* RE_ENABLE_I18N */
+
+  /* We don't care the syntax in this case.  */
+  ret = build_charclass (trans, sbcset,
+#ifdef RE_ENABLE_I18N
+			 mbcset, &alloc,
+#endif /* RE_ENABLE_I18N */
+			 class_name, 0);
+
+  if (__glibc_unlikely (ret != REG_NOERROR))
+    {
+      re_free (sbcset);
+#ifdef RE_ENABLE_I18N
+      free_charset (mbcset);
+#endif /* RE_ENABLE_I18N */
+      *err = ret;
+      return NULL;
+    }
+  /* \w match '_' also.  */
+  for (; *extra; extra++)
+    bitset_set (sbcset, *extra);
+
+  /* If it is non-matching list.  */
+  if (non_match)
+    bitset_not (sbcset);
+
+#ifdef RE_ENABLE_I18N
+  /* Ensure only single byte characters are set.  */
+  if (dfa->mb_cur_max > 1)
+    bitset_mask (sbcset, dfa->sb_char);
+#endif
+
+  /* Build a tree for simple bracket.  */
+  re_token_t br_token = { .type = SIMPLE_BRACKET, .opr.sbcset = sbcset };
+  tree = create_token_tree (dfa, NULL, NULL, &br_token);
+  if (__glibc_unlikely (tree == NULL))
+    goto build_word_op_espace;
+
+#ifdef RE_ENABLE_I18N
+  if (dfa->mb_cur_max > 1)
+    {
+      bin_tree_t *mbc_tree;
+      /* Build a tree for complex bracket.  */
+      br_token.type = COMPLEX_BRACKET;
+      br_token.opr.mbcset = mbcset;
+      dfa->has_mb_node = 1;
+      mbc_tree = create_token_tree (dfa, NULL, NULL, &br_token);
+      if (__glibc_unlikely (mbc_tree == NULL))
+	goto build_word_op_espace;
+      /* Then join them by ALT node.  */
+      tree = create_tree (dfa, tree, mbc_tree, OP_ALT);
+      if (__glibc_likely (mbc_tree != NULL))
+	return tree;
+    }
+  else
+    {
+      free_charset (mbcset);
+      return tree;
+    }
+#else /* not RE_ENABLE_I18N */
+  return tree;
+#endif /* not RE_ENABLE_I18N */
+
+ build_word_op_espace:
+  re_free (sbcset);
+#ifdef RE_ENABLE_I18N
+  free_charset (mbcset);
+#endif /* RE_ENABLE_I18N */
+  *err = REG_ESPACE;
+  return NULL;
+}
+
+/* This is intended for the expressions like "a{1,3}".
+   Fetch a number from 'input', and return the number.
+   Return -1 if the number field is empty like "{,1}".
+   Return RE_DUP_MAX + 1 if the number field is too large.
+   Return -2 if an error occurred.  */
+
+static Idx
+fetch_number (re_string_t *input, re_token_t *token, reg_syntax_t syntax)
+{
+  Idx num = -1;
+  unsigned char c;
+  while (1)
+    {
+      fetch_token (token, input, syntax);
+      c = token->opr.c;
+      if (__glibc_unlikely (token->type == END_OF_RE))
+	return -2;
+      if (token->type == OP_CLOSE_DUP_NUM || c == ',')
+	break;
+      num = ((token->type != CHARACTER || c < '0' || '9' < c || num == -2)
+	     ? -2
+	     : num == -1
+	     ? c - '0'
+	     : MIN (RE_DUP_MAX + 1, num * 10 + c - '0'));
+    }
+  return num;
+}
+
+#ifdef RE_ENABLE_I18N
+static void
+free_charset (re_charset_t *cset)
+{
+  re_free (cset->mbchars);
+# ifdef _LIBC
+  re_free (cset->coll_syms);
+  re_free (cset->equiv_classes);
+# endif
+  re_free (cset->range_starts);
+  re_free (cset->range_ends);
+  re_free (cset->char_classes);
+  re_free (cset);
+}
+#endif /* RE_ENABLE_I18N */
+
+/* Functions for binary tree operation.  */
+
+/* Create a tree node.  */
+
+static bin_tree_t *
+create_tree (re_dfa_t *dfa, bin_tree_t *left, bin_tree_t *right,
+	     re_token_type_t type)
+{
+  re_token_t t = { .type = type };
+  return create_token_tree (dfa, left, right, &t);
+}
+
+static bin_tree_t *
+create_token_tree (re_dfa_t *dfa, bin_tree_t *left, bin_tree_t *right,
+		   const re_token_t *token)
+{
+  bin_tree_t *tree;
+  if (__glibc_unlikely (dfa->str_tree_storage_idx == BIN_TREE_STORAGE_SIZE))
+    {
+      bin_tree_storage_t *storage = re_malloc (bin_tree_storage_t, 1);
+
+      if (storage == NULL)
+	return NULL;
+      storage->next = dfa->str_tree_storage;
+      dfa->str_tree_storage = storage;
+      dfa->str_tree_storage_idx = 0;
+    }
+  tree = &dfa->str_tree_storage->data[dfa->str_tree_storage_idx++];
+
+  tree->parent = NULL;
+  tree->left = left;
+  tree->right = right;
+  tree->token = *token;
+  tree->token.duplicated = 0;
+  tree->token.opt_subexp = 0;
+  tree->first = NULL;
+  tree->next = NULL;
+  tree->node_idx = -1;
+
+  if (left != NULL)
+    left->parent = tree;
+  if (right != NULL)
+    right->parent = tree;
+  return tree;
+}
+
+/* Mark the tree SRC as an optional subexpression.
+   To be called from preorder or postorder.  */
+
+static reg_errcode_t
+mark_opt_subexp (void *extra, bin_tree_t *node)
+{
+  Idx idx = (uintptr_t) extra;
+  if (node->token.type == SUBEXP && node->token.opr.idx == idx)
+    node->token.opt_subexp = 1;
+
+  return REG_NOERROR;
+}
+
+/* Free the allocated memory inside NODE. */
+
+static void
+free_token (re_token_t *node)
+{
+#ifdef RE_ENABLE_I18N
+  if (node->type == COMPLEX_BRACKET && node->duplicated == 0)
+    free_charset (node->opr.mbcset);
+  else
+#endif /* RE_ENABLE_I18N */
+    if (node->type == SIMPLE_BRACKET && node->duplicated == 0)
+      re_free (node->opr.sbcset);
+}
+
+/* Worker function for tree walking.  Free the allocated memory inside NODE
+   and its children. */
+
+static reg_errcode_t
+free_tree (void *extra, bin_tree_t *node)
+{
+  free_token (&node->token);
+  return REG_NOERROR;
+}
+
+
+/* Duplicate the node SRC, and return new node.  This is a preorder
+   visit similar to the one implemented by the generic visitor, but
+   we need more infrastructure to maintain two parallel trees --- so,
+   it's easier to duplicate.  */
+
+static bin_tree_t *
+duplicate_tree (const bin_tree_t *root, re_dfa_t *dfa)
+{
+  const bin_tree_t *node;
+  bin_tree_t *dup_root;
+  bin_tree_t **p_new = &dup_root, *dup_node = root->parent;
+
+  for (node = root; ; )
+    {
+      /* Create a new tree and link it back to the current parent.  */
+      *p_new = create_token_tree (dfa, NULL, NULL, &node->token);
+      if (*p_new == NULL)
+	return NULL;
+      (*p_new)->parent = dup_node;
+      (*p_new)->token.duplicated = 1;
+      dup_node = *p_new;
+
+      /* Go to the left node, or up and to the right.  */
+      if (node->left)
+	{
+	  node = node->left;
+	  p_new = &dup_node->left;
+	}
+      else
+	{
+	  const bin_tree_t *prev = NULL;
+	  while (node->right == prev || node->right == NULL)
+	    {
+	      prev = node;
+	      node = node->parent;
+	      dup_node = dup_node->parent;
+	      if (!node)
+		return dup_root;
+	    }
+	  node = node->right;
+	  p_new = &dup_node->right;
+	}
+    }
+}
diff --git a/src/grep/lib/regex.c b/src/grep/lib/regex.c
new file mode 100644
index 0000000..7296be0
--- /dev/null
+++ b/src/grep/lib/regex.c
@@ -0,0 +1,83 @@
+/* Extended regular expression matching and search library.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#define __STDC_WANT_IEC_60559_BFP_EXT__
+
+#ifndef _LIBC
+# include <libc-config.h>
+
+# if __GNUC_PREREQ (4, 6)
+#  pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
+# endif
+# if __GNUC_PREREQ (4, 3)
+#  pragma GCC diagnostic ignored "-Wold-style-definition"
+#  pragma GCC diagnostic ignored "-Wtype-limits"
+# endif
+#endif
+
+/* Make sure no one compiles this code with a C++ compiler.  */
+#if defined __cplusplus && defined _LIBC
+# error "This is C code, use a C compiler"
+#endif
+
+#ifdef _LIBC
+/* We have to keep the namespace clean.  */
+# define regfree(preg) __regfree (preg)
+# define regexec(pr, st, nm, pm, ef) __regexec (pr, st, nm, pm, ef)
+# define regcomp(preg, pattern, cflags) __regcomp (preg, pattern, cflags)
+# define regerror(errcode, preg, errbuf, errbuf_size) \
+	__regerror(errcode, preg, errbuf, errbuf_size)
+# define re_set_registers(bu, re, nu, st, en) \
+	__re_set_registers (bu, re, nu, st, en)
+# define re_match_2(bufp, string1, size1, string2, size2, pos, regs, stop) \
+	__re_match_2 (bufp, string1, size1, string2, size2, pos, regs, stop)
+# define re_match(bufp, string, size, pos, regs) \
+	__re_match (bufp, string, size, pos, regs)
+# define re_search(bufp, string, size, startpos, range, regs) \
+	__re_search (bufp, string, size, startpos, range, regs)
+# define re_compile_pattern(pattern, length, bufp) \
+	__re_compile_pattern (pattern, length, bufp)
+# define re_set_syntax(syntax) __re_set_syntax (syntax)
+# define re_search_2(bufp, st1, s1, st2, s2, startpos, range, regs, stop) \
+	__re_search_2 (bufp, st1, s1, st2, s2, startpos, range, regs, stop)
+# define re_compile_fastmap(bufp) __re_compile_fastmap (bufp)
+
+# include "../locale/localeinfo.h"
+#endif
+
+/* On some systems, limits.h sets RE_DUP_MAX to a lower value than
+   GNU regex allows.  Include it before <regex.h>, which correctly
+   #undefs RE_DUP_MAX and sets it to the right value.  */
+#include <limits.h>
+
+#include <regex.h>
+#include "regex_internal.h"
+
+#include "regex_internal.c"
+#include "regcomp.c"
+#include "regexec.c"
+
+/* Binary backward compatibility.  */
+#if _LIBC
+# include <shlib-compat.h>
+# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3)
+link_warning (re_max_failures, "the 're_max_failures' variable is obsolete and will go away.")
+int re_max_failures = 2000;
+# endif
+#endif
diff --git a/src/grep/lib/regex.h b/src/grep/lib/regex.h
new file mode 100644
index 0000000..8e4ef45
--- /dev/null
+++ b/src/grep/lib/regex.h
@@ -0,0 +1,663 @@
+/* Definitions for data structures and routines for the regular
+   expression library.
+   Copyright (C) 1985, 1989-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _REGEX_H
+#define _REGEX_H 1
+
+#include <sys/types.h>
+
+/* Allow the use in C++ code.  */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Define __USE_GNU to declare GNU extensions that violate the
+   POSIX name space rules.  */
+#ifdef _GNU_SOURCE
+# define __USE_GNU 1
+#endif
+
+#ifdef _REGEX_LARGE_OFFSETS
+
+/* Use types and values that are wide enough to represent signed and
+   unsigned byte offsets in memory.  This currently works only when
+   the regex code is used outside of the GNU C library; it is not yet
+   supported within glibc itself, and glibc users should not define
+   _REGEX_LARGE_OFFSETS.  */
+
+/* The type of object sizes.  */
+typedef size_t __re_size_t;
+
+/* The type of object sizes, in places where the traditional code
+   uses unsigned long int.  */
+typedef size_t __re_long_size_t;
+
+#else
+
+/* The traditional GNU regex implementation mishandles strings longer
+   than INT_MAX.  */
+typedef unsigned int __re_size_t;
+typedef unsigned long int __re_long_size_t;
+
+#endif
+
+/* The following two types have to be signed and unsigned integer type
+   wide enough to hold a value of a pointer.  For most ANSI compilers
+   ptrdiff_t and size_t should be likely OK.  Still size of these two
+   types is 2 for Microsoft C.  Ugh... */
+typedef long int s_reg_t;
+typedef unsigned long int active_reg_t;
+
+/* The following bits are used to determine the regexp syntax we
+   recognize.  The set/not-set meanings are chosen so that Emacs syntax
+   remains the value 0.  The bits are given in alphabetical order, and
+   the definitions shifted by one from the previous bit; thus, when we
+   add or remove a bit, only one other definition need change.  */
+typedef unsigned long int reg_syntax_t;
+
+#ifdef __USE_GNU
+/* If this bit is not set, then \ inside a bracket expression is literal.
+   If set, then such a \ quotes the following character.  */
+# define RE_BACKSLASH_ESCAPE_IN_LISTS ((unsigned long int) 1)
+
+/* If this bit is not set, then + and ? are operators, and \+ and \? are
+     literals.
+   If set, then \+ and \? are operators and + and ? are literals.  */
+# define RE_BK_PLUS_QM (RE_BACKSLASH_ESCAPE_IN_LISTS << 1)
+
+/* If this bit is set, then character classes are supported.  They are:
+     [:alpha:], [:upper:], [:lower:],  [:digit:], [:alnum:], [:xdigit:],
+     [:space:], [:print:], [:punct:], [:graph:], and [:cntrl:].
+   If not set, then character classes are not supported.  */
+# define RE_CHAR_CLASSES (RE_BK_PLUS_QM << 1)
+
+/* If this bit is set, then ^ and $ are always anchors (outside bracket
+     expressions, of course).
+   If this bit is not set, then it depends:
+	^  is an anchor if it is at the beginning of a regular
+	   expression or after an open-group or an alternation operator;
+	$  is an anchor if it is at the end of a regular expression, or
+	   before a close-group or an alternation operator.
+
+   This bit could be (re)combined with RE_CONTEXT_INDEP_OPS, because
+   POSIX draft 11.2 says that * etc. in leading positions is undefined.
+   We already implemented a previous draft which made those constructs
+   invalid, though, so we haven't changed the code back.  */
+# define RE_CONTEXT_INDEP_ANCHORS (RE_CHAR_CLASSES << 1)
+
+/* If this bit is set, then special characters are always special
+     regardless of where they are in the pattern.
+   If this bit is not set, then special characters are special only in
+     some contexts; otherwise they are ordinary.  Specifically,
+     * + ? and intervals are only special when not after the beginning,
+     open-group, or alternation operator.  */
+# define RE_CONTEXT_INDEP_OPS (RE_CONTEXT_INDEP_ANCHORS << 1)
+
+/* If this bit is set, then *, +, ?, and { cannot be first in an re or
+     immediately after an alternation or begin-group operator.  */
+# define RE_CONTEXT_INVALID_OPS (RE_CONTEXT_INDEP_OPS << 1)
+
+/* If this bit is set, then . matches newline.
+   If not set, then it doesn't.  */
+# define RE_DOT_NEWLINE (RE_CONTEXT_INVALID_OPS << 1)
+
+/* If this bit is set, then . doesn't match NUL.
+   If not set, then it does.  */
+# define RE_DOT_NOT_NULL (RE_DOT_NEWLINE << 1)
+
+/* If this bit is set, nonmatching lists [^...] do not match newline.
+   If not set, they do.  */
+# define RE_HAT_LISTS_NOT_NEWLINE (RE_DOT_NOT_NULL << 1)
+
+/* If this bit is set, either \{...\} or {...} defines an
+     interval, depending on RE_NO_BK_BRACES.
+   If not set, \{, \}, {, and } are literals.  */
+# define RE_INTERVALS (RE_HAT_LISTS_NOT_NEWLINE << 1)
+
+/* If this bit is set, +, ? and | aren't recognized as operators.
+   If not set, they are.  */
+# define RE_LIMITED_OPS (RE_INTERVALS << 1)
+
+/* If this bit is set, newline is an alternation operator.
+   If not set, newline is literal.  */
+# define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1)
+
+/* If this bit is set, then '{...}' defines an interval, and \{ and \}
+     are literals.
+  If not set, then '\{...\}' defines an interval.  */
+# define RE_NO_BK_BRACES (RE_NEWLINE_ALT << 1)
+
+/* If this bit is set, (...) defines a group, and \( and \) are literals.
+   If not set, \(...\) defines a group, and ( and ) are literals.  */
+# define RE_NO_BK_PARENS (RE_NO_BK_BRACES << 1)
+
+/* If this bit is set, then \<digit> matches <digit>.
+   If not set, then \<digit> is a back-reference.  */
+# define RE_NO_BK_REFS (RE_NO_BK_PARENS << 1)
+
+/* If this bit is set, then | is an alternation operator, and \| is literal.
+   If not set, then \| is an alternation operator, and | is literal.  */
+# define RE_NO_BK_VBAR (RE_NO_BK_REFS << 1)
+
+/* If this bit is set, then an ending range point collating higher
+     than the starting range point, as in [z-a], is invalid.
+   If not set, then when ending range point collates higher than the
+     starting range point, the range is ignored.  */
+# define RE_NO_EMPTY_RANGES (RE_NO_BK_VBAR << 1)
+
+/* If this bit is set, then an unmatched ) is ordinary.
+   If not set, then an unmatched ) is invalid.  */
+# define RE_UNMATCHED_RIGHT_PAREN_ORD (RE_NO_EMPTY_RANGES << 1)
+
+/* If this bit is set, succeed as soon as we match the whole pattern,
+   without further backtracking.  */
+# define RE_NO_POSIX_BACKTRACKING (RE_UNMATCHED_RIGHT_PAREN_ORD << 1)
+
+/* If this bit is set, do not process the GNU regex operators.
+   If not set, then the GNU regex operators are recognized. */
+# define RE_NO_GNU_OPS (RE_NO_POSIX_BACKTRACKING << 1)
+
+/* If this bit is set, turn on internal regex debugging.
+   If not set, and debugging was on, turn it off.
+   This only works if regex.c is compiled -DDEBUG.
+   We define this bit always, so that all that's needed to turn on
+   debugging is to recompile regex.c; the calling code can always have
+   this bit set, and it won't affect anything in the normal case. */
+# define RE_DEBUG (RE_NO_GNU_OPS << 1)
+
+/* If this bit is set, a syntactically invalid interval is treated as
+   a string of ordinary characters.  For example, the ERE 'a{1' is
+   treated as 'a\{1'.  */
+# define RE_INVALID_INTERVAL_ORD (RE_DEBUG << 1)
+
+/* If this bit is set, then ignore case when matching.
+   If not set, then case is significant.  */
+# define RE_ICASE (RE_INVALID_INTERVAL_ORD << 1)
+
+/* This bit is used internally like RE_CONTEXT_INDEP_ANCHORS but only
+   for ^, because it is difficult to scan the regex backwards to find
+   whether ^ should be special.  */
+# define RE_CARET_ANCHORS_HERE (RE_ICASE << 1)
+
+/* If this bit is set, then \{ cannot be first in a regex or
+   immediately after an alternation, open-group or \} operator.  */
+# define RE_CONTEXT_INVALID_DUP (RE_CARET_ANCHORS_HERE << 1)
+
+/* If this bit is set, then no_sub will be set to 1 during
+   re_compile_pattern.  */
+# define RE_NO_SUB (RE_CONTEXT_INVALID_DUP << 1)
+#endif
+
+/* This global variable defines the particular regexp syntax to use (for
+   some interfaces).  When a regexp is compiled, the syntax used is
+   stored in the pattern buffer, so changing this does not affect
+   already-compiled regexps.  */
+extern reg_syntax_t re_syntax_options;
+
+#ifdef __USE_GNU
+/* Define combinations of the above bits for the standard possibilities.
+   (The [[[ comments delimit what gets put into the Texinfo file, so
+   don't delete them!)  */
+/* [[[begin syntaxes]]] */
+# define RE_SYNTAX_EMACS 0
+
+# define RE_SYNTAX_AWK							\
+  (RE_BACKSLASH_ESCAPE_IN_LISTS   | RE_DOT_NOT_NULL			\
+   | RE_NO_BK_PARENS              | RE_NO_BK_REFS			\
+   | RE_NO_BK_VBAR                | RE_NO_EMPTY_RANGES			\
+   | RE_DOT_NEWLINE		  | RE_CONTEXT_INDEP_ANCHORS		\
+   | RE_CHAR_CLASSES							\
+   | RE_UNMATCHED_RIGHT_PAREN_ORD | RE_NO_GNU_OPS)
+
+# define RE_SYNTAX_GNU_AWK						\
+  ((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS		\
+    | RE_INVALID_INTERVAL_ORD)						\
+   & ~(RE_DOT_NOT_NULL | RE_CONTEXT_INDEP_OPS				\
+      | RE_CONTEXT_INVALID_OPS ))
+
+# define RE_SYNTAX_POSIX_AWK						\
+  (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS		\
+   | RE_INTERVALS	    | RE_NO_GNU_OPS				\
+   | RE_INVALID_INTERVAL_ORD)
+
+# define RE_SYNTAX_GREP							\
+  ((RE_SYNTAX_POSIX_BASIC | RE_NEWLINE_ALT)				\
+   & ~(RE_CONTEXT_INVALID_DUP | RE_DOT_NOT_NULL))
+
+# define RE_SYNTAX_EGREP						\
+  ((RE_SYNTAX_POSIX_EXTENDED | RE_INVALID_INTERVAL_ORD | RE_NEWLINE_ALT) \
+   & ~(RE_CONTEXT_INVALID_OPS | RE_DOT_NOT_NULL))
+
+/* POSIX grep -E behavior is no longer incompatible with GNU.  */
+# define RE_SYNTAX_POSIX_EGREP						\
+  RE_SYNTAX_EGREP
+
+/* P1003.2/D11.2, section 4.20.7.1, lines 5078ff.  */
+# define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC
+
+# define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC
+
+/* Syntax bits common to both basic and extended POSIX regex syntax.  */
+# define _RE_SYNTAX_POSIX_COMMON					\
+  (RE_CHAR_CLASSES | RE_DOT_NEWLINE      | RE_DOT_NOT_NULL		\
+   | RE_INTERVALS  | RE_NO_EMPTY_RANGES)
+
+# define RE_SYNTAX_POSIX_BASIC						\
+  (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM | RE_CONTEXT_INVALID_DUP)
+
+/* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes
+   RE_LIMITED_OPS, i.e., \? \+ \| are not recognized.  Actually, this
+   isn't minimal, since other operators, such as \`, aren't disabled.  */
+# define RE_SYNTAX_POSIX_MINIMAL_BASIC					\
+  (_RE_SYNTAX_POSIX_COMMON | RE_LIMITED_OPS)
+
+# define RE_SYNTAX_POSIX_EXTENDED					\
+  (_RE_SYNTAX_POSIX_COMMON  | RE_CONTEXT_INDEP_ANCHORS			\
+   | RE_CONTEXT_INDEP_OPS   | RE_NO_BK_BRACES				\
+   | RE_NO_BK_PARENS        | RE_NO_BK_VBAR				\
+   | RE_CONTEXT_INVALID_OPS | RE_UNMATCHED_RIGHT_PAREN_ORD)
+
+/* Differs from ..._POSIX_EXTENDED in that RE_CONTEXT_INDEP_OPS is
+   removed and RE_NO_BK_REFS is added.  */
+# define RE_SYNTAX_POSIX_MINIMAL_EXTENDED				\
+  (_RE_SYNTAX_POSIX_COMMON  | RE_CONTEXT_INDEP_ANCHORS			\
+   | RE_CONTEXT_INVALID_OPS | RE_NO_BK_BRACES				\
+   | RE_NO_BK_PARENS        | RE_NO_BK_REFS				\
+   | RE_NO_BK_VBAR	    | RE_UNMATCHED_RIGHT_PAREN_ORD)
+/* [[[end syntaxes]]] */
+
+/* Maximum number of duplicates an interval can allow.  POSIX-conforming
+   systems might define this in <limits.h>, but we want our
+   value, so remove any previous define.  */
+# ifdef _REGEX_INCLUDE_LIMITS_H
+#  include <limits.h>
+# endif
+# ifdef RE_DUP_MAX
+#  undef RE_DUP_MAX
+# endif
+
+/* RE_DUP_MAX is 2**15 - 1 because an earlier implementation stored
+   the counter as a 2-byte signed integer.  This is no longer true, so
+   RE_DUP_MAX could be increased to (INT_MAX / 10 - 1), or to
+   ((SIZE_MAX - 9) / 10) if _REGEX_LARGE_OFFSETS is defined.
+   However, there would be a huge performance problem if someone
+   actually used a pattern like a\{214748363\}, so RE_DUP_MAX retains
+   its historical value.  */
+# define RE_DUP_MAX (0x7fff)
+#endif
+
+
+/* POSIX 'cflags' bits (i.e., information for 'regcomp').  */
+
+/* If this bit is set, then use extended regular expression syntax.
+   If not set, then use basic regular expression syntax.  */
+#define REG_EXTENDED 1
+
+/* If this bit is set, then ignore case when matching.
+   If not set, then case is significant.  */
+#define REG_ICASE (1 << 1)
+
+/* If this bit is set, then anchors do not match at newline
+     characters in the string.
+   If not set, then anchors do match at newlines.  */
+#define REG_NEWLINE (1 << 2)
+
+/* If this bit is set, then report only success or fail in regexec.
+   If not set, then returns differ between not matching and errors.  */
+#define REG_NOSUB (1 << 3)
+
+
+/* POSIX 'eflags' bits (i.e., information for regexec).  */
+
+/* If this bit is set, then the beginning-of-line operator doesn't match
+     the beginning of the string (presumably because it's not the
+     beginning of a line).
+   If not set, then the beginning-of-line operator does match the
+     beginning of the string.  */
+#define REG_NOTBOL 1
+
+/* Like REG_NOTBOL, except for the end-of-line.  */
+#define REG_NOTEOL (1 << 1)
+
+/* Use PMATCH[0] to delimit the start and end of the search in the
+   buffer.  */
+#define REG_STARTEND (1 << 2)
+
+
+/* If any error codes are removed, changed, or added, update the
+   '__re_error_msgid' table in regcomp.c.  */
+
+typedef enum
+{
+  _REG_ENOSYS = -1,	/* This will never happen for this implementation.  */
+  _REG_NOERROR = 0,	/* Success.  */
+  _REG_NOMATCH,		/* Didn't find a match (for regexec).  */
+
+  /* POSIX regcomp return error codes.  (In the order listed in the
+     standard.)  */
+  _REG_BADPAT,		/* Invalid pattern.  */
+  _REG_ECOLLATE,	/* Invalid collating element.  */
+  _REG_ECTYPE,		/* Invalid character class name.  */
+  _REG_EESCAPE,		/* Trailing backslash.  */
+  _REG_ESUBREG,		/* Invalid back reference.  */
+  _REG_EBRACK,		/* Unmatched left bracket.  */
+  _REG_EPAREN,		/* Parenthesis imbalance.  */
+  _REG_EBRACE,		/* Unmatched \{.  */
+  _REG_BADBR,		/* Invalid contents of \{\}.  */
+  _REG_ERANGE,		/* Invalid range end.  */
+  _REG_ESPACE,		/* Ran out of memory.  */
+  _REG_BADRPT,		/* No preceding re for repetition op.  */
+
+  /* Error codes we've added.  */
+  _REG_EEND,		/* Premature end.  */
+  _REG_ESIZE,		/* Too large (e.g., repeat count too large).  */
+  _REG_ERPAREN		/* Unmatched ) or \); not returned from regcomp.  */
+} reg_errcode_t;
+
+#if defined _XOPEN_SOURCE || defined __USE_XOPEN2K
+# define REG_ENOSYS	_REG_ENOSYS
+#endif
+#define REG_NOERROR	_REG_NOERROR
+#define REG_NOMATCH	_REG_NOMATCH
+#define REG_BADPAT	_REG_BADPAT
+#define REG_ECOLLATE	_REG_ECOLLATE
+#define REG_ECTYPE	_REG_ECTYPE
+#define REG_EESCAPE	_REG_EESCAPE
+#define REG_ESUBREG	_REG_ESUBREG
+#define REG_EBRACK	_REG_EBRACK
+#define REG_EPAREN	_REG_EPAREN
+#define REG_EBRACE	_REG_EBRACE
+#define REG_BADBR	_REG_BADBR
+#define REG_ERANGE	_REG_ERANGE
+#define REG_ESPACE	_REG_ESPACE
+#define REG_BADRPT	_REG_BADRPT
+#define REG_EEND	_REG_EEND
+#define REG_ESIZE	_REG_ESIZE
+#define REG_ERPAREN	_REG_ERPAREN
+
+/* This data structure represents a compiled pattern.  Before calling
+   the pattern compiler, the fields 'buffer', 'allocated', 'fastmap',
+   and 'translate' can be set.  After the pattern has been compiled,
+   the fields 're_nsub', 'not_bol' and 'not_eol' are available.  All
+   other fields are private to the regex routines.  */
+
+#ifndef RE_TRANSLATE_TYPE
+# define __RE_TRANSLATE_TYPE unsigned char *
+# ifdef __USE_GNU
+#  define RE_TRANSLATE_TYPE __RE_TRANSLATE_TYPE
+# endif
+#endif
+
+#ifdef __USE_GNU
+# define __REPB_PREFIX(name) name
+#else
+# define __REPB_PREFIX(name) __##name
+#endif
+
+struct re_pattern_buffer
+{
+  /* Space that holds the compiled pattern.  The type
+     'struct re_dfa_t' is private and is not declared here.  */
+  struct re_dfa_t *__REPB_PREFIX(buffer);
+
+  /* Number of bytes to which 'buffer' points.  */
+  __re_long_size_t __REPB_PREFIX(allocated);
+
+  /* Number of bytes actually used in 'buffer'.  */
+  __re_long_size_t __REPB_PREFIX(used);
+
+  /* Syntax setting with which the pattern was compiled.  */
+  reg_syntax_t __REPB_PREFIX(syntax);
+
+  /* Pointer to a fastmap, if any, otherwise zero.  re_search uses the
+     fastmap, if there is one, to skip over impossible starting points
+     for matches.  */
+  char *__REPB_PREFIX(fastmap);
+
+  /* Either a translate table to apply to all characters before
+     comparing them, or zero for no translation.  The translation is
+     applied to a pattern when it is compiled and to a string when it
+     is matched.  */
+  __RE_TRANSLATE_TYPE __REPB_PREFIX(translate);
+
+  /* Number of subexpressions found by the compiler.  */
+  size_t re_nsub;
+
+  /* Zero if this pattern cannot match the empty string, one else.
+     Well, in truth it's used only in 're_search_2', to see whether or
+     not we should use the fastmap, so we don't set this absolutely
+     perfectly; see 're_compile_fastmap' (the "duplicate" case).  */
+  unsigned __REPB_PREFIX(can_be_null) : 1;
+
+  /* If REGS_UNALLOCATED, allocate space in the 'regs' structure
+     for 'max (RE_NREGS, re_nsub + 1)' groups.
+     If REGS_REALLOCATE, reallocate space if necessary.
+     If REGS_FIXED, use what's there.  */
+#ifdef __USE_GNU
+# define REGS_UNALLOCATED 0
+# define REGS_REALLOCATE 1
+# define REGS_FIXED 2
+#endif
+  unsigned __REPB_PREFIX(regs_allocated) : 2;
+
+  /* Set to zero when 're_compile_pattern' compiles a pattern; set to
+     one by 're_compile_fastmap' if it updates the fastmap.  */
+  unsigned __REPB_PREFIX(fastmap_accurate) : 1;
+
+  /* If set, 're_match_2' does not return information about
+     subexpressions.  */
+  unsigned __REPB_PREFIX(no_sub) : 1;
+
+  /* If set, a beginning-of-line anchor doesn't match at the beginning
+     of the string.  */
+  unsigned __REPB_PREFIX(not_bol) : 1;
+
+  /* Similarly for an end-of-line anchor.  */
+  unsigned __REPB_PREFIX(not_eol) : 1;
+
+  /* If true, an anchor at a newline matches.  */
+  unsigned __REPB_PREFIX(newline_anchor) : 1;
+};
+
+typedef struct re_pattern_buffer regex_t;
+
+/* Type for byte offsets within the string.  POSIX mandates this.  */
+#ifdef _REGEX_LARGE_OFFSETS
+/* POSIX 1003.1-2008 requires that regoff_t be at least as wide as
+   ptrdiff_t and ssize_t.  We don't know of any hosts where ptrdiff_t
+   is wider than ssize_t, so ssize_t is safe.  ptrdiff_t is not
+   visible here, so use ssize_t.  */
+typedef ssize_t regoff_t;
+#else
+/* The traditional GNU regex implementation mishandles strings longer
+   than INT_MAX.  */
+typedef int regoff_t;
+#endif
+
+
+#ifdef __USE_GNU
+/* This is the structure we store register match data in.  See
+   regex.texinfo for a full description of what registers match.  */
+struct re_registers
+{
+  __re_size_t num_regs;
+  regoff_t *start;
+  regoff_t *end;
+};
+
+
+/* If 'regs_allocated' is REGS_UNALLOCATED in the pattern buffer,
+   're_match_2' returns information about at least this many registers
+   the first time a 'regs' structure is passed.  */
+# ifndef RE_NREGS
+#  define RE_NREGS 30
+# endif
+#endif
+
+
+/* POSIX specification for registers.  Aside from the different names than
+   're_registers', POSIX uses an array of structures, instead of a
+   structure of arrays.  */
+typedef struct
+{
+  regoff_t rm_so;  /* Byte offset from string's start to substring's start.  */
+  regoff_t rm_eo;  /* Byte offset from string's start to substring's end.  */
+} regmatch_t;
+
+/* Declarations for routines.  */
+
+#ifdef __USE_GNU
+/* Sets the current default syntax to SYNTAX, and return the old syntax.
+   You can also simply assign to the 're_syntax_options' variable.  */
+extern reg_syntax_t re_set_syntax (reg_syntax_t __syntax);
+
+/* Compile the regular expression PATTERN, with length LENGTH
+   and syntax given by the global 're_syntax_options', into the buffer
+   BUFFER.  Return NULL if successful, and an error string if not.
+
+   To free the allocated storage, you must call 'regfree' on BUFFER.
+   Note that the translate table must either have been initialized by
+   'regcomp', with a malloc'ed value, or set to NULL before calling
+   'regfree'.  */
+extern const char *re_compile_pattern (const char *__pattern, size_t __length,
+				       struct re_pattern_buffer *__buffer);
+
+
+/* Compile a fastmap for the compiled pattern in BUFFER; used to
+   accelerate searches.  Return 0 if successful and -2 if was an
+   internal error.  */
+extern int re_compile_fastmap (struct re_pattern_buffer *__buffer);
+
+
+/* Search in the string STRING (with length LENGTH) for the pattern
+   compiled into BUFFER.  Start searching at position START, for RANGE
+   characters.  Return the starting position of the match, -1 for no
+   match, or -2 for an internal error.  Also return register
+   information in REGS (if REGS and BUFFER->no_sub are nonzero).  */
+extern regoff_t re_search (struct re_pattern_buffer *__buffer,
+			   const char *__String, regoff_t __length,
+			   regoff_t __start, regoff_t __range,
+			   struct re_registers *__regs);
+
+
+/* Like 're_search', but search in the concatenation of STRING1 and
+   STRING2.  Also, stop searching at index START + STOP.  */
+extern regoff_t re_search_2 (struct re_pattern_buffer *__buffer,
+			     const char *__string1, regoff_t __length1,
+			     const char *__string2, regoff_t __length2,
+			     regoff_t __start, regoff_t __range,
+			     struct re_registers *__regs,
+			     regoff_t __stop);
+
+
+/* Like 're_search', but return how many characters in STRING the regexp
+   in BUFFER matched, starting at position START.  */
+extern regoff_t re_match (struct re_pattern_buffer *__buffer,
+			  const char *__String, regoff_t __length,
+			  regoff_t __start, struct re_registers *__regs);
+
+
+/* Relates to 're_match' as 're_search_2' relates to 're_search'.  */
+extern regoff_t re_match_2 (struct re_pattern_buffer *__buffer,
+			    const char *__string1, regoff_t __length1,
+			    const char *__string2, regoff_t __length2,
+			    regoff_t __start, struct re_registers *__regs,
+			    regoff_t __stop);
+
+
+/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
+   ENDS.  Subsequent matches using BUFFER and REGS will use this memory
+   for recording register information.  STARTS and ENDS must be
+   allocated with malloc, and must each be at least 'NUM_REGS * sizeof
+   (regoff_t)' bytes long.
+
+   If NUM_REGS == 0, then subsequent matches should allocate their own
+   register data.
+
+   Unless this function is called, the first search or match using
+   BUFFER will allocate its own register data, without
+   freeing the old data.  */
+extern void re_set_registers (struct re_pattern_buffer *__buffer,
+			      struct re_registers *__regs,
+			      __re_size_t __num_regs,
+			      regoff_t *__starts, regoff_t *__ends);
+#endif	/* Use GNU */
+
+#if defined _REGEX_RE_COMP || (defined _LIBC && defined __USE_MISC)
+/* 4.2 bsd compatibility.  */
+extern char *re_comp (const char *);
+extern int re_exec (const char *);
+#endif
+
+/* For plain 'restrict', use glibc's __restrict if defined.
+   Otherwise, GCC 2.95 and later have "__restrict"; C99 compilers have
+   "restrict", and "configure" may have defined "restrict".
+   Other compilers use __restrict, __restrict__, and _Restrict, and
+   'configure' might #define 'restrict' to those words, so pick a
+   different name.  */
+#ifndef _Restrict_
+# if defined __restrict \
+     || 2 < __GNUC__ + (95 <= __GNUC_MINOR__) \
+     || __clang_major__ >= 3
+#  define _Restrict_ __restrict
+# elif 199901L <= __STDC_VERSION__ || defined restrict
+#  define _Restrict_ restrict
+# else
+#  define _Restrict_
+# endif
+#endif
+/* For the ISO C99 syntax
+     array_name[restrict]
+   use glibc's __restrict_arr if available.
+   Otherwise, GCC 3.1 and clang support this syntax (but not in C++ mode).
+   Other ISO C99 compilers support it as well.  */
+#ifndef _Restrict_arr_
+# ifdef __restrict_arr
+#  define _Restrict_arr_ __restrict_arr
+# elif ((199901L <= __STDC_VERSION__ \
+         || 3 < __GNUC__ + (1 <= __GNUC_MINOR__) \
+         || __clang_major__ >= 3) \
+        && !defined __cplusplus)
+#  define _Restrict_arr_ _Restrict_
+# else
+#  define _Restrict_arr_
+# endif
+#endif
+
+/* POSIX compatibility.  */
+extern int regcomp (regex_t *_Restrict_ __preg,
+		    const char *_Restrict_ __pattern,
+		    int __cflags);
+
+extern int regexec (const regex_t *_Restrict_ __preg,
+		    const char *_Restrict_ __String, size_t __nmatch,
+		    regmatch_t __pmatch[_Restrict_arr_],
+		    int __eflags);
+
+extern size_t regerror (int __errcode, const regex_t *_Restrict_ __preg,
+			char *_Restrict_ __errbuf, size_t __errbuf_size);
+
+extern void regfree (regex_t *__preg);
+
+
+#ifdef __cplusplus
+}
+#endif	/* C++ */
+
+#endif /* regex.h */
diff --git a/src/grep/lib/regex_internal.c b/src/grep/lib/regex_internal.c
new file mode 100644
index 0000000..aefcfa2
--- /dev/null
+++ b/src/grep/lib/regex_internal.c
@@ -0,0 +1,1753 @@
+/* Extended regular expression matching and search library.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+static void re_string_construct_common (const char *str, Idx len,
+					re_string_t *pstr,
+					RE_TRANSLATE_TYPE trans, bool icase,
+					const re_dfa_t *dfa);
+static re_dfastate_t *create_ci_newstate (const re_dfa_t *dfa,
+					  const re_node_set *nodes,
+					  re_hashval_t hash);
+static re_dfastate_t *create_cd_newstate (const re_dfa_t *dfa,
+					  const re_node_set *nodes,
+					  unsigned int context,
+					  re_hashval_t hash);
+static reg_errcode_t re_string_realloc_buffers (re_string_t *pstr,
+						Idx new_buf_len);
+#ifdef RE_ENABLE_I18N
+static void build_wcs_buffer (re_string_t *pstr);
+static reg_errcode_t build_wcs_upper_buffer (re_string_t *pstr);
+#endif /* RE_ENABLE_I18N */
+static void build_upper_buffer (re_string_t *pstr);
+static void re_string_translate_buffer (re_string_t *pstr);
+static unsigned int re_string_context_at (const re_string_t *input, Idx idx,
+					  int eflags) __attribute__ ((pure));
+
+/* Functions for string operation.  */
+
+/* This function allocate the buffers.  It is necessary to call
+   re_string_reconstruct before using the object.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+re_string_allocate (re_string_t *pstr, const char *str, Idx len, Idx init_len,
+		    RE_TRANSLATE_TYPE trans, bool icase, const re_dfa_t *dfa)
+{
+  reg_errcode_t ret;
+  Idx init_buf_len;
+
+  /* Ensure at least one character fits into the buffers.  */
+  if (init_len < dfa->mb_cur_max)
+    init_len = dfa->mb_cur_max;
+  init_buf_len = (len + 1 < init_len) ? len + 1: init_len;
+  re_string_construct_common (str, len, pstr, trans, icase, dfa);
+
+  ret = re_string_realloc_buffers (pstr, init_buf_len);
+  if (__glibc_unlikely (ret != REG_NOERROR))
+    return ret;
+
+  pstr->word_char = dfa->word_char;
+  pstr->word_ops_used = dfa->word_ops_used;
+  pstr->mbs = pstr->mbs_allocated ? pstr->mbs : (unsigned char *) str;
+  pstr->valid_len = (pstr->mbs_allocated || dfa->mb_cur_max > 1) ? 0 : len;
+  pstr->valid_raw_len = pstr->valid_len;
+  return REG_NOERROR;
+}
+
+/* This function allocate the buffers, and initialize them.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+re_string_construct (re_string_t *pstr, const char *str, Idx len,
+		     RE_TRANSLATE_TYPE trans, bool icase, const re_dfa_t *dfa)
+{
+  reg_errcode_t ret;
+  memset (pstr, '\0', sizeof (re_string_t));
+  re_string_construct_common (str, len, pstr, trans, icase, dfa);
+
+  if (len > 0)
+    {
+      ret = re_string_realloc_buffers (pstr, len + 1);
+      if (__glibc_unlikely (ret != REG_NOERROR))
+	return ret;
+    }
+  pstr->mbs = pstr->mbs_allocated ? pstr->mbs : (unsigned char *) str;
+
+  if (icase)
+    {
+#ifdef RE_ENABLE_I18N
+      if (dfa->mb_cur_max > 1)
+	{
+	  while (1)
+	    {
+	      ret = build_wcs_upper_buffer (pstr);
+	      if (__glibc_unlikely (ret != REG_NOERROR))
+		return ret;
+	      if (pstr->valid_raw_len >= len)
+		break;
+	      if (pstr->bufs_len > pstr->valid_len + dfa->mb_cur_max)
+		break;
+	      ret = re_string_realloc_buffers (pstr, pstr->bufs_len * 2);
+	      if (__glibc_unlikely (ret != REG_NOERROR))
+		return ret;
+	    }
+	}
+      else
+#endif /* RE_ENABLE_I18N  */
+	build_upper_buffer (pstr);
+    }
+  else
+    {
+#ifdef RE_ENABLE_I18N
+      if (dfa->mb_cur_max > 1)
+	build_wcs_buffer (pstr);
+      else
+#endif /* RE_ENABLE_I18N  */
+	{
+	  if (trans != NULL)
+	    re_string_translate_buffer (pstr);
+	  else
+	    {
+	      pstr->valid_len = pstr->bufs_len;
+	      pstr->valid_raw_len = pstr->bufs_len;
+	    }
+	}
+    }
+
+  return REG_NOERROR;
+}
+
+/* Helper functions for re_string_allocate, and re_string_construct.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+re_string_realloc_buffers (re_string_t *pstr, Idx new_buf_len)
+{
+#ifdef RE_ENABLE_I18N
+  if (pstr->mb_cur_max > 1)
+    {
+      wint_t *new_wcs;
+
+      /* Avoid overflow in realloc.  */
+      const size_t max_object_size = MAX (sizeof (wint_t), sizeof (Idx));
+      if (__glibc_unlikely (MIN (IDX_MAX, SIZE_MAX / max_object_size)
+			    < new_buf_len))
+	return REG_ESPACE;
+
+      new_wcs = re_realloc (pstr->wcs, wint_t, new_buf_len);
+      if (__glibc_unlikely (new_wcs == NULL))
+	return REG_ESPACE;
+      pstr->wcs = new_wcs;
+      if (pstr->offsets != NULL)
+	{
+	  Idx *new_offsets = re_realloc (pstr->offsets, Idx, new_buf_len);
+	  if (__glibc_unlikely (new_offsets == NULL))
+	    return REG_ESPACE;
+	  pstr->offsets = new_offsets;
+	}
+    }
+#endif /* RE_ENABLE_I18N  */
+  if (pstr->mbs_allocated)
+    {
+      unsigned char *new_mbs = re_realloc (pstr->mbs, unsigned char,
+					   new_buf_len);
+      if (__glibc_unlikely (new_mbs == NULL))
+	return REG_ESPACE;
+      pstr->mbs = new_mbs;
+    }
+  pstr->bufs_len = new_buf_len;
+  return REG_NOERROR;
+}
+
+
+static void
+re_string_construct_common (const char *str, Idx len, re_string_t *pstr,
+			    RE_TRANSLATE_TYPE trans, bool icase,
+			    const re_dfa_t *dfa)
+{
+  pstr->raw_mbs = (const unsigned char *) str;
+  pstr->len = len;
+  pstr->raw_len = len;
+  pstr->trans = trans;
+  pstr->icase = icase;
+  pstr->mbs_allocated = (trans != NULL || icase);
+  pstr->mb_cur_max = dfa->mb_cur_max;
+  pstr->is_utf8 = dfa->is_utf8;
+  pstr->map_notascii = dfa->map_notascii;
+  pstr->stop = pstr->len;
+  pstr->raw_stop = pstr->stop;
+}
+
+#ifdef RE_ENABLE_I18N
+
+/* Build wide character buffer PSTR->WCS.
+   If the byte sequence of the string are:
+     <mb1>(0), <mb1>(1), <mb2>(0), <mb2>(1), <sb3>
+   Then wide character buffer will be:
+     <wc1>   , WEOF    , <wc2>   , WEOF    , <wc3>
+   We use WEOF for padding, they indicate that the position isn't
+   a first byte of a multibyte character.
+
+   Note that this function assumes PSTR->VALID_LEN elements are already
+   built and starts from PSTR->VALID_LEN.  */
+
+static void
+build_wcs_buffer (re_string_t *pstr)
+{
+#ifdef _LIBC
+  unsigned char buf[MB_LEN_MAX];
+  DEBUG_ASSERT (MB_LEN_MAX >= pstr->mb_cur_max);
+#else
+  unsigned char buf[64];
+#endif
+  mbstate_t prev_st;
+  Idx byte_idx, end_idx, remain_len;
+  size_t mbclen;
+
+  /* Build the buffers from pstr->valid_len to either pstr->len or
+     pstr->bufs_len.  */
+  end_idx = (pstr->bufs_len > pstr->len) ? pstr->len : pstr->bufs_len;
+  for (byte_idx = pstr->valid_len; byte_idx < end_idx;)
+    {
+      wchar_t wc;
+      const char *p;
+
+      remain_len = end_idx - byte_idx;
+      prev_st = pstr->cur_state;
+      /* Apply the translation if we need.  */
+      if (__glibc_unlikely (pstr->trans != NULL))
+	{
+	  int i, ch;
+
+	  for (i = 0; i < pstr->mb_cur_max && i < remain_len; ++i)
+	    {
+	      ch = pstr->raw_mbs [pstr->raw_mbs_idx + byte_idx + i];
+	      buf[i] = pstr->mbs[byte_idx + i] = pstr->trans[ch];
+	    }
+	  p = (const char *) buf;
+	}
+      else
+	p = (const char *) pstr->raw_mbs + pstr->raw_mbs_idx + byte_idx;
+      mbclen = __mbrtowc (&wc, p, remain_len, &pstr->cur_state);
+      if (__glibc_unlikely (mbclen == (size_t) -1 || mbclen == 0
+			    || (mbclen == (size_t) -2
+				&& pstr->bufs_len >= pstr->len)))
+	{
+	  /* We treat these cases as a singlebyte character.  */
+	  mbclen = 1;
+	  wc = (wchar_t) pstr->raw_mbs[pstr->raw_mbs_idx + byte_idx];
+	  if (__glibc_unlikely (pstr->trans != NULL))
+	    wc = pstr->trans[wc];
+	  pstr->cur_state = prev_st;
+	}
+      else if (__glibc_unlikely (mbclen == (size_t) -2))
+	{
+	  /* The buffer doesn't have enough space, finish to build.  */
+	  pstr->cur_state = prev_st;
+	  break;
+	}
+
+      /* Write wide character and padding.  */
+      pstr->wcs[byte_idx++] = wc;
+      /* Write paddings.  */
+      for (remain_len = byte_idx + mbclen - 1; byte_idx < remain_len ;)
+	pstr->wcs[byte_idx++] = WEOF;
+    }
+  pstr->valid_len = byte_idx;
+  pstr->valid_raw_len = byte_idx;
+}
+
+/* Build wide character buffer PSTR->WCS like build_wcs_buffer,
+   but for REG_ICASE.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+build_wcs_upper_buffer (re_string_t *pstr)
+{
+  mbstate_t prev_st;
+  Idx src_idx, byte_idx, end_idx, remain_len;
+  size_t mbclen;
+#ifdef _LIBC
+  char buf[MB_LEN_MAX];
+  DEBUG_ASSERT (pstr->mb_cur_max <= MB_LEN_MAX);
+#else
+  char buf[64];
+#endif
+
+  byte_idx = pstr->valid_len;
+  end_idx = (pstr->bufs_len > pstr->len) ? pstr->len : pstr->bufs_len;
+
+  /* The following optimization assumes that ASCII characters can be
+     mapped to wide characters with a simple cast.  */
+  if (! pstr->map_notascii && pstr->trans == NULL && !pstr->offsets_needed)
+    {
+      while (byte_idx < end_idx)
+	{
+	  wchar_t wc;
+	  unsigned char ch = pstr->raw_mbs[pstr->raw_mbs_idx + byte_idx];
+
+	  if (isascii (ch) && mbsinit (&pstr->cur_state))
+	    {
+	      /* The next step uses the assumption that wchar_t is encoded
+		 ASCII-safe: all ASCII values can be converted like this.  */
+	      wchar_t wcu = __towupper (ch);
+	      if (isascii (wcu))
+		{
+		  pstr->mbs[byte_idx] = wcu;
+		  pstr->wcs[byte_idx] = wcu;
+		  byte_idx++;
+		  continue;
+		}
+	    }
+
+	  remain_len = end_idx - byte_idx;
+	  prev_st = pstr->cur_state;
+	  mbclen = __mbrtowc (&wc,
+			      ((const char *) pstr->raw_mbs + pstr->raw_mbs_idx
+			       + byte_idx), remain_len, &pstr->cur_state);
+	  if (__glibc_likely (0 < mbclen && mbclen < (size_t) -2))
+	    {
+	      wchar_t wcu = __towupper (wc);
+	      if (wcu != wc)
+		{
+		  size_t mbcdlen;
+
+		  mbcdlen = __wcrtomb (buf, wcu, &prev_st);
+		  if (__glibc_likely (mbclen == mbcdlen))
+		    memcpy (pstr->mbs + byte_idx, buf, mbclen);
+		  else
+		    {
+		      src_idx = byte_idx;
+		      goto offsets_needed;
+		    }
+		}
+	      else
+		memcpy (pstr->mbs + byte_idx,
+			pstr->raw_mbs + pstr->raw_mbs_idx + byte_idx, mbclen);
+	      pstr->wcs[byte_idx++] = wcu;
+	      /* Write paddings.  */
+	      for (remain_len = byte_idx + mbclen - 1; byte_idx < remain_len ;)
+		pstr->wcs[byte_idx++] = WEOF;
+	    }
+	  else if (mbclen == (size_t) -1 || mbclen == 0
+		   || (mbclen == (size_t) -2 && pstr->bufs_len >= pstr->len))
+	    {
+	      /* It is an invalid character, an incomplete character
+		 at the end of the string, or '\0'.  Just use the byte.  */
+	      pstr->mbs[byte_idx] = ch;
+	      /* And also cast it to wide char.  */
+	      pstr->wcs[byte_idx++] = (wchar_t) ch;
+	      if (__glibc_unlikely (mbclen == (size_t) -1))
+		pstr->cur_state = prev_st;
+	    }
+	  else
+	    {
+	      /* The buffer doesn't have enough space, finish to build.  */
+	      pstr->cur_state = prev_st;
+	      break;
+	    }
+	}
+      pstr->valid_len = byte_idx;
+      pstr->valid_raw_len = byte_idx;
+      return REG_NOERROR;
+    }
+  else
+    for (src_idx = pstr->valid_raw_len; byte_idx < end_idx;)
+      {
+	wchar_t wc;
+	const char *p;
+      offsets_needed:
+	remain_len = end_idx - byte_idx;
+	prev_st = pstr->cur_state;
+	if (__glibc_unlikely (pstr->trans != NULL))
+	  {
+	    int i, ch;
+
+	    for (i = 0; i < pstr->mb_cur_max && i < remain_len; ++i)
+	      {
+		ch = pstr->raw_mbs [pstr->raw_mbs_idx + src_idx + i];
+		buf[i] = pstr->trans[ch];
+	      }
+	    p = (const char *) buf;
+	  }
+	else
+	  p = (const char *) pstr->raw_mbs + pstr->raw_mbs_idx + src_idx;
+	mbclen = __mbrtowc (&wc, p, remain_len, &pstr->cur_state);
+	if (__glibc_likely (0 < mbclen && mbclen < (size_t) -2))
+	  {
+	    wchar_t wcu = __towupper (wc);
+	    if (wcu != wc)
+	      {
+		size_t mbcdlen;
+
+		mbcdlen = __wcrtomb ((char *) buf, wcu, &prev_st);
+		if (__glibc_likely (mbclen == mbcdlen))
+		  memcpy (pstr->mbs + byte_idx, buf, mbclen);
+		else if (mbcdlen != (size_t) -1)
+		  {
+		    size_t i;
+
+		    if (byte_idx + mbcdlen > pstr->bufs_len)
+		      {
+			pstr->cur_state = prev_st;
+			break;
+		      }
+
+		    if (pstr->offsets == NULL)
+		      {
+			pstr->offsets = re_malloc (Idx, pstr->bufs_len);
+
+			if (pstr->offsets == NULL)
+			  return REG_ESPACE;
+		      }
+		    if (!pstr->offsets_needed)
+		      {
+			for (i = 0; i < (size_t) byte_idx; ++i)
+			  pstr->offsets[i] = i;
+			pstr->offsets_needed = 1;
+		      }
+
+		    memcpy (pstr->mbs + byte_idx, buf, mbcdlen);
+		    pstr->wcs[byte_idx] = wcu;
+		    pstr->offsets[byte_idx] = src_idx;
+		    for (i = 1; i < mbcdlen; ++i)
+		      {
+			pstr->offsets[byte_idx + i]
+			  = src_idx + (i < mbclen ? i : mbclen - 1);
+			pstr->wcs[byte_idx + i] = WEOF;
+		      }
+		    pstr->len += mbcdlen - mbclen;
+		    if (pstr->raw_stop > src_idx)
+		      pstr->stop += mbcdlen - mbclen;
+		    end_idx = (pstr->bufs_len > pstr->len)
+			      ? pstr->len : pstr->bufs_len;
+		    byte_idx += mbcdlen;
+		    src_idx += mbclen;
+		    continue;
+		  }
+		else
+		  memcpy (pstr->mbs + byte_idx, p, mbclen);
+	      }
+	    else
+	      memcpy (pstr->mbs + byte_idx, p, mbclen);
+
+	    if (__glibc_unlikely (pstr->offsets_needed != 0))
+	      {
+		size_t i;
+		for (i = 0; i < mbclen; ++i)
+		  pstr->offsets[byte_idx + i] = src_idx + i;
+	      }
+	    src_idx += mbclen;
+
+	    pstr->wcs[byte_idx++] = wcu;
+	    /* Write paddings.  */
+	    for (remain_len = byte_idx + mbclen - 1; byte_idx < remain_len ;)
+	      pstr->wcs[byte_idx++] = WEOF;
+	  }
+	else if (mbclen == (size_t) -1 || mbclen == 0
+		 || (mbclen == (size_t) -2 && pstr->bufs_len >= pstr->len))
+	  {
+	    /* It is an invalid character or '\0'.  Just use the byte.  */
+	    int ch = pstr->raw_mbs[pstr->raw_mbs_idx + src_idx];
+
+	    if (__glibc_unlikely (pstr->trans != NULL))
+	      ch = pstr->trans [ch];
+	    pstr->mbs[byte_idx] = ch;
+
+	    if (__glibc_unlikely (pstr->offsets_needed != 0))
+	      pstr->offsets[byte_idx] = src_idx;
+	    ++src_idx;
+
+	    /* And also cast it to wide char.  */
+	    pstr->wcs[byte_idx++] = (wchar_t) ch;
+	    if (__glibc_unlikely (mbclen == (size_t) -1))
+	      pstr->cur_state = prev_st;
+	  }
+	else
+	  {
+	    /* The buffer doesn't have enough space, finish to build.  */
+	    pstr->cur_state = prev_st;
+	    break;
+	  }
+      }
+  pstr->valid_len = byte_idx;
+  pstr->valid_raw_len = src_idx;
+  return REG_NOERROR;
+}
+
+/* Skip characters until the index becomes greater than NEW_RAW_IDX.
+   Return the index.  */
+
+static Idx
+re_string_skip_chars (re_string_t *pstr, Idx new_raw_idx, wint_t *last_wc)
+{
+  mbstate_t prev_st;
+  Idx rawbuf_idx;
+  size_t mbclen;
+  wint_t wc = WEOF;
+
+  /* Skip the characters which are not necessary to check.  */
+  for (rawbuf_idx = pstr->raw_mbs_idx + pstr->valid_raw_len;
+       rawbuf_idx < new_raw_idx;)
+    {
+      wchar_t wc2;
+      Idx remain_len = pstr->raw_len - rawbuf_idx;
+      prev_st = pstr->cur_state;
+      mbclen = __mbrtowc (&wc2, (const char *) pstr->raw_mbs + rawbuf_idx,
+			  remain_len, &pstr->cur_state);
+      if (__glibc_unlikely (mbclen == (size_t) -2 || mbclen == (size_t) -1
+			    || mbclen == 0))
+	{
+	  /* We treat these cases as a single byte character.  */
+	  if (mbclen == 0 || remain_len == 0)
+	    wc = L'\0';
+	  else
+	    wc = *(unsigned char *) (pstr->raw_mbs + rawbuf_idx);
+	  mbclen = 1;
+	  pstr->cur_state = prev_st;
+	}
+      else
+	wc = wc2;
+      /* Then proceed the next character.  */
+      rawbuf_idx += mbclen;
+    }
+  *last_wc = wc;
+  return rawbuf_idx;
+}
+#endif /* RE_ENABLE_I18N  */
+
+/* Build the buffer PSTR->MBS, and apply the translation if we need.
+   This function is used in case of REG_ICASE.  */
+
+static void
+build_upper_buffer (re_string_t *pstr)
+{
+  Idx char_idx, end_idx;
+  end_idx = (pstr->bufs_len > pstr->len) ? pstr->len : pstr->bufs_len;
+
+  for (char_idx = pstr->valid_len; char_idx < end_idx; ++char_idx)
+    {
+      int ch = pstr->raw_mbs[pstr->raw_mbs_idx + char_idx];
+      if (__glibc_unlikely (pstr->trans != NULL))
+	ch = pstr->trans[ch];
+      pstr->mbs[char_idx] = toupper (ch);
+    }
+  pstr->valid_len = char_idx;
+  pstr->valid_raw_len = char_idx;
+}
+
+/* Apply TRANS to the buffer in PSTR.  */
+
+static void
+re_string_translate_buffer (re_string_t *pstr)
+{
+  Idx buf_idx, end_idx;
+  end_idx = (pstr->bufs_len > pstr->len) ? pstr->len : pstr->bufs_len;
+
+  for (buf_idx = pstr->valid_len; buf_idx < end_idx; ++buf_idx)
+    {
+      int ch = pstr->raw_mbs[pstr->raw_mbs_idx + buf_idx];
+      pstr->mbs[buf_idx] = pstr->trans[ch];
+    }
+
+  pstr->valid_len = buf_idx;
+  pstr->valid_raw_len = buf_idx;
+}
+
+/* This function re-construct the buffers.
+   Concretely, convert to wide character in case of pstr->mb_cur_max > 1,
+   convert to upper case in case of REG_ICASE, apply translation.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+re_string_reconstruct (re_string_t *pstr, Idx idx, int eflags)
+{
+  Idx offset;
+
+  if (__glibc_unlikely (pstr->raw_mbs_idx <= idx))
+    offset = idx - pstr->raw_mbs_idx;
+  else
+    {
+      /* Reset buffer.  */
+#ifdef RE_ENABLE_I18N
+      if (pstr->mb_cur_max > 1)
+	memset (&pstr->cur_state, '\0', sizeof (mbstate_t));
+#endif /* RE_ENABLE_I18N */
+      pstr->len = pstr->raw_len;
+      pstr->stop = pstr->raw_stop;
+      pstr->valid_len = 0;
+      pstr->raw_mbs_idx = 0;
+      pstr->valid_raw_len = 0;
+      pstr->offsets_needed = 0;
+      pstr->tip_context = ((eflags & REG_NOTBOL) ? CONTEXT_BEGBUF
+			   : CONTEXT_NEWLINE | CONTEXT_BEGBUF);
+      if (!pstr->mbs_allocated)
+	pstr->mbs = (unsigned char *) pstr->raw_mbs;
+      offset = idx;
+    }
+
+  if (__glibc_likely (offset != 0))
+    {
+      /* Should the already checked characters be kept?  */
+      if (__glibc_likely (offset < pstr->valid_raw_len))
+	{
+	  /* Yes, move them to the front of the buffer.  */
+#ifdef RE_ENABLE_I18N
+	  if (__glibc_unlikely (pstr->offsets_needed))
+	    {
+	      Idx low = 0, high = pstr->valid_len, mid;
+	      do
+		{
+		  mid = (high + low) / 2;
+		  if (pstr->offsets[mid] > offset)
+		    high = mid;
+		  else if (pstr->offsets[mid] < offset)
+		    low = mid + 1;
+		  else
+		    break;
+		}
+	      while (low < high);
+	      if (pstr->offsets[mid] < offset)
+		++mid;
+	      pstr->tip_context = re_string_context_at (pstr, mid - 1,
+							eflags);
+	      /* This can be quite complicated, so handle specially
+		 only the common and easy case where the character with
+		 different length representation of lower and upper
+		 case is present at or after offset.  */
+	      if (pstr->valid_len > offset
+		  && mid == offset && pstr->offsets[mid] == offset)
+		{
+		  memmove (pstr->wcs, pstr->wcs + offset,
+			   (pstr->valid_len - offset) * sizeof (wint_t));
+		  memmove (pstr->mbs, pstr->mbs + offset, pstr->valid_len - offset);
+		  pstr->valid_len -= offset;
+		  pstr->valid_raw_len -= offset;
+		  for (low = 0; low < pstr->valid_len; low++)
+		    pstr->offsets[low] = pstr->offsets[low + offset] - offset;
+		}
+	      else
+		{
+		  /* Otherwise, just find out how long the partial multibyte
+		     character at offset is and fill it with WEOF/255.  */
+		  pstr->len = pstr->raw_len - idx + offset;
+		  pstr->stop = pstr->raw_stop - idx + offset;
+		  pstr->offsets_needed = 0;
+		  while (mid > 0 && pstr->offsets[mid - 1] == offset)
+		    --mid;
+		  while (mid < pstr->valid_len)
+		    if (pstr->wcs[mid] != WEOF)
+		      break;
+		    else
+		      ++mid;
+		  if (mid == pstr->valid_len)
+		    pstr->valid_len = 0;
+		  else
+		    {
+		      pstr->valid_len = pstr->offsets[mid] - offset;
+		      if (pstr->valid_len)
+			{
+			  for (low = 0; low < pstr->valid_len; ++low)
+			    pstr->wcs[low] = WEOF;
+			  memset (pstr->mbs, 255, pstr->valid_len);
+			}
+		    }
+		  pstr->valid_raw_len = pstr->valid_len;
+		}
+	    }
+	  else
+#endif
+	    {
+	      pstr->tip_context = re_string_context_at (pstr, offset - 1,
+							eflags);
+#ifdef RE_ENABLE_I18N
+	      if (pstr->mb_cur_max > 1)
+		memmove (pstr->wcs, pstr->wcs + offset,
+			 (pstr->valid_len - offset) * sizeof (wint_t));
+#endif /* RE_ENABLE_I18N */
+	      if (__glibc_unlikely (pstr->mbs_allocated))
+		memmove (pstr->mbs, pstr->mbs + offset,
+			 pstr->valid_len - offset);
+	      pstr->valid_len -= offset;
+	      pstr->valid_raw_len -= offset;
+	      DEBUG_ASSERT (pstr->valid_len > 0);
+	    }
+	}
+      else
+	{
+#ifdef RE_ENABLE_I18N
+	  /* No, skip all characters until IDX.  */
+	  Idx prev_valid_len = pstr->valid_len;
+
+	  if (__glibc_unlikely (pstr->offsets_needed))
+	    {
+	      pstr->len = pstr->raw_len - idx + offset;
+	      pstr->stop = pstr->raw_stop - idx + offset;
+	      pstr->offsets_needed = 0;
+	    }
+#endif
+	  pstr->valid_len = 0;
+#ifdef RE_ENABLE_I18N
+	  if (pstr->mb_cur_max > 1)
+	    {
+	      Idx wcs_idx;
+	      wint_t wc = WEOF;
+
+	      if (pstr->is_utf8)
+		{
+		  const unsigned char *raw, *p, *end;
+
+		  /* Special case UTF-8.  Multi-byte chars start with any
+		     byte other than 0x80 - 0xbf.  */
+		  raw = pstr->raw_mbs + pstr->raw_mbs_idx;
+		  end = raw + (offset - pstr->mb_cur_max);
+		  if (end < pstr->raw_mbs)
+		    end = pstr->raw_mbs;
+		  p = raw + offset - 1;
+#ifdef _LIBC
+		  /* We know the wchar_t encoding is UCS4, so for the simple
+		     case, ASCII characters, skip the conversion step.  */
+		  if (isascii (*p) && __glibc_likely (pstr->trans == NULL))
+		    {
+		      memset (&pstr->cur_state, '\0', sizeof (mbstate_t));
+		      /* pstr->valid_len = 0; */
+		      wc = (wchar_t) *p;
+		    }
+		  else
+#endif
+		    for (; p >= end; --p)
+		      if ((*p & 0xc0) != 0x80)
+			{
+			  mbstate_t cur_state;
+			  wchar_t wc2;
+			  Idx mlen = raw + pstr->len - p;
+			  unsigned char buf[6];
+			  size_t mbclen;
+
+			  const unsigned char *pp = p;
+			  if (__glibc_unlikely (pstr->trans != NULL))
+			    {
+			      int i = mlen < 6 ? mlen : 6;
+			      while (--i >= 0)
+				buf[i] = pstr->trans[p[i]];
+			      pp = buf;
+			    }
+			  /* XXX Don't use mbrtowc, we know which conversion
+			     to use (UTF-8 -> UCS4).  */
+			  memset (&cur_state, 0, sizeof (cur_state));
+			  mbclen = __mbrtowc (&wc2, (const char *) pp, mlen,
+					      &cur_state);
+			  if (raw + offset - p <= mbclen
+			      && mbclen < (size_t) -2)
+			    {
+			      memset (&pstr->cur_state, '\0',
+				      sizeof (mbstate_t));
+			      pstr->valid_len = mbclen - (raw + offset - p);
+			      wc = wc2;
+			    }
+			  break;
+			}
+		}
+
+	      if (wc == WEOF)
+		pstr->valid_len = re_string_skip_chars (pstr, idx, &wc) - idx;
+	      if (wc == WEOF)
+		pstr->tip_context
+		  = re_string_context_at (pstr, prev_valid_len - 1, eflags);
+	      else
+		pstr->tip_context = ((__glibc_unlikely (pstr->word_ops_used != 0)
+				      && IS_WIDE_WORD_CHAR (wc))
+				     ? CONTEXT_WORD
+				     : ((IS_WIDE_NEWLINE (wc)
+					 && pstr->newline_anchor)
+					? CONTEXT_NEWLINE : 0));
+	      if (__glibc_unlikely (pstr->valid_len))
+		{
+		  for (wcs_idx = 0; wcs_idx < pstr->valid_len; ++wcs_idx)
+		    pstr->wcs[wcs_idx] = WEOF;
+		  if (pstr->mbs_allocated)
+		    memset (pstr->mbs, 255, pstr->valid_len);
+		}
+	      pstr->valid_raw_len = pstr->valid_len;
+	    }
+	  else
+#endif /* RE_ENABLE_I18N */
+	    {
+	      int c = pstr->raw_mbs[pstr->raw_mbs_idx + offset - 1];
+	      pstr->valid_raw_len = 0;
+	      if (pstr->trans)
+		c = pstr->trans[c];
+	      pstr->tip_context = (bitset_contain (pstr->word_char, c)
+				   ? CONTEXT_WORD
+				   : ((IS_NEWLINE (c) && pstr->newline_anchor)
+				      ? CONTEXT_NEWLINE : 0));
+	    }
+	}
+      if (!__glibc_unlikely (pstr->mbs_allocated))
+	pstr->mbs += offset;
+    }
+  pstr->raw_mbs_idx = idx;
+  pstr->len -= offset;
+  pstr->stop -= offset;
+
+  /* Then build the buffers.  */
+#ifdef RE_ENABLE_I18N
+  if (pstr->mb_cur_max > 1)
+    {
+      if (pstr->icase)
+	{
+	  reg_errcode_t ret = build_wcs_upper_buffer (pstr);
+	  if (__glibc_unlikely (ret != REG_NOERROR))
+	    return ret;
+	}
+      else
+	build_wcs_buffer (pstr);
+    }
+  else
+#endif /* RE_ENABLE_I18N */
+    if (__glibc_unlikely (pstr->mbs_allocated))
+      {
+	if (pstr->icase)
+	  build_upper_buffer (pstr);
+	else if (pstr->trans != NULL)
+	  re_string_translate_buffer (pstr);
+      }
+    else
+      pstr->valid_len = pstr->len;
+
+  pstr->cur_idx = 0;
+  return REG_NOERROR;
+}
+
+static unsigned char
+__attribute__ ((pure))
+re_string_peek_byte_case (const re_string_t *pstr, Idx idx)
+{
+  int ch;
+  Idx off;
+
+  /* Handle the common (easiest) cases first.  */
+  if (__glibc_likely (!pstr->mbs_allocated))
+    return re_string_peek_byte (pstr, idx);
+
+#ifdef RE_ENABLE_I18N
+  if (pstr->mb_cur_max > 1
+      && ! re_string_is_single_byte_char (pstr, pstr->cur_idx + idx))
+    return re_string_peek_byte (pstr, idx);
+#endif
+
+  off = pstr->cur_idx + idx;
+#ifdef RE_ENABLE_I18N
+  if (pstr->offsets_needed)
+    off = pstr->offsets[off];
+#endif
+
+  ch = pstr->raw_mbs[pstr->raw_mbs_idx + off];
+
+#ifdef RE_ENABLE_I18N
+  /* Ensure that e.g. for tr_TR.UTF-8 BACKSLASH DOTLESS SMALL LETTER I
+     this function returns CAPITAL LETTER I instead of first byte of
+     DOTLESS SMALL LETTER I.  The latter would confuse the parser,
+     since peek_byte_case doesn't advance cur_idx in any way.  */
+  if (pstr->offsets_needed && !isascii (ch))
+    return re_string_peek_byte (pstr, idx);
+#endif
+
+  return ch;
+}
+
+static unsigned char
+re_string_fetch_byte_case (re_string_t *pstr)
+{
+  if (__glibc_likely (!pstr->mbs_allocated))
+    return re_string_fetch_byte (pstr);
+
+#ifdef RE_ENABLE_I18N
+  if (pstr->offsets_needed)
+    {
+      Idx off;
+      int ch;
+
+      /* For tr_TR.UTF-8 [[:islower:]] there is
+	 [[: CAPITAL LETTER I WITH DOT lower:]] in mbs.  Skip
+	 in that case the whole multi-byte character and return
+	 the original letter.  On the other side, with
+	 [[: DOTLESS SMALL LETTER I return [[:I, as doing
+	 anything else would complicate things too much.  */
+
+      if (!re_string_first_byte (pstr, pstr->cur_idx))
+	return re_string_fetch_byte (pstr);
+
+      off = pstr->offsets[pstr->cur_idx];
+      ch = pstr->raw_mbs[pstr->raw_mbs_idx + off];
+
+      if (! isascii (ch))
+	return re_string_fetch_byte (pstr);
+
+      re_string_skip_bytes (pstr,
+			    re_string_char_size_at (pstr, pstr->cur_idx));
+      return ch;
+    }
+#endif
+
+  return pstr->raw_mbs[pstr->raw_mbs_idx + pstr->cur_idx++];
+}
+
+static void
+re_string_destruct (re_string_t *pstr)
+{
+#ifdef RE_ENABLE_I18N
+  re_free (pstr->wcs);
+  re_free (pstr->offsets);
+#endif /* RE_ENABLE_I18N  */
+  if (pstr->mbs_allocated)
+    re_free (pstr->mbs);
+}
+
+/* Return the context at IDX in INPUT.  */
+
+static unsigned int
+re_string_context_at (const re_string_t *input, Idx idx, int eflags)
+{
+  int c;
+  if (__glibc_unlikely (idx < 0))
+    /* In this case, we use the value stored in input->tip_context,
+       since we can't know the character in input->mbs[-1] here.  */
+    return input->tip_context;
+  if (__glibc_unlikely (idx == input->len))
+    return ((eflags & REG_NOTEOL) ? CONTEXT_ENDBUF
+	    : CONTEXT_NEWLINE | CONTEXT_ENDBUF);
+#ifdef RE_ENABLE_I18N
+  if (input->mb_cur_max > 1)
+    {
+      wint_t wc;
+      Idx wc_idx = idx;
+      while(input->wcs[wc_idx] == WEOF)
+	{
+	  DEBUG_ASSERT (wc_idx >= 0);
+	  --wc_idx;
+	  if (wc_idx < 0)
+	    return input->tip_context;
+	}
+      wc = input->wcs[wc_idx];
+      if (__glibc_unlikely (input->word_ops_used != 0)
+	  && IS_WIDE_WORD_CHAR (wc))
+	return CONTEXT_WORD;
+      return (IS_WIDE_NEWLINE (wc) && input->newline_anchor
+	      ? CONTEXT_NEWLINE : 0);
+    }
+  else
+#endif
+    {
+      c = re_string_byte_at (input, idx);
+      if (bitset_contain (input->word_char, c))
+	return CONTEXT_WORD;
+      return IS_NEWLINE (c) && input->newline_anchor ? CONTEXT_NEWLINE : 0;
+    }
+}
+
+/* Functions for set operation.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+re_node_set_alloc (re_node_set *set, Idx size)
+{
+  set->alloc = size;
+  set->nelem = 0;
+  set->elems = re_malloc (Idx, size);
+  if (__glibc_unlikely (set->elems == NULL)
+      && (MALLOC_0_IS_NONNULL || size != 0))
+    return REG_ESPACE;
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+re_node_set_init_1 (re_node_set *set, Idx elem)
+{
+  set->alloc = 1;
+  set->nelem = 1;
+  set->elems = re_malloc (Idx, 1);
+  if (__glibc_unlikely (set->elems == NULL))
+    {
+      set->alloc = set->nelem = 0;
+      return REG_ESPACE;
+    }
+  set->elems[0] = elem;
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+re_node_set_init_2 (re_node_set *set, Idx elem1, Idx elem2)
+{
+  set->alloc = 2;
+  set->elems = re_malloc (Idx, 2);
+  if (__glibc_unlikely (set->elems == NULL))
+    return REG_ESPACE;
+  if (elem1 == elem2)
+    {
+      set->nelem = 1;
+      set->elems[0] = elem1;
+    }
+  else
+    {
+      set->nelem = 2;
+      if (elem1 < elem2)
+	{
+	  set->elems[0] = elem1;
+	  set->elems[1] = elem2;
+	}
+      else
+	{
+	  set->elems[0] = elem2;
+	  set->elems[1] = elem1;
+	}
+    }
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+re_node_set_init_copy (re_node_set *dest, const re_node_set *src)
+{
+  dest->nelem = src->nelem;
+  if (src->nelem > 0)
+    {
+      dest->alloc = dest->nelem;
+      dest->elems = re_malloc (Idx, dest->alloc);
+      if (__glibc_unlikely (dest->elems == NULL))
+	{
+	  dest->alloc = dest->nelem = 0;
+	  return REG_ESPACE;
+	}
+      memcpy (dest->elems, src->elems, src->nelem * sizeof (Idx));
+    }
+  else
+    re_node_set_init_empty (dest);
+  return REG_NOERROR;
+}
+
+/* Calculate the intersection of the sets SRC1 and SRC2. And merge it to
+   DEST. Return value indicate the error code or REG_NOERROR if succeeded.
+   Note: We assume dest->elems is NULL, when dest->alloc is 0.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+re_node_set_add_intersect (re_node_set *dest, const re_node_set *src1,
+			   const re_node_set *src2)
+{
+  Idx i1, i2, is, id, delta, sbase;
+  if (src1->nelem == 0 || src2->nelem == 0)
+    return REG_NOERROR;
+
+  /* We need dest->nelem + 2 * elems_in_intersection; this is a
+     conservative estimate.  */
+  if (src1->nelem + src2->nelem + dest->nelem > dest->alloc)
+    {
+      Idx new_alloc = src1->nelem + src2->nelem + dest->alloc;
+      Idx *new_elems = re_realloc (dest->elems, Idx, new_alloc);
+      if (__glibc_unlikely (new_elems == NULL))
+	return REG_ESPACE;
+      dest->elems = new_elems;
+      dest->alloc = new_alloc;
+    }
+
+  /* Find the items in the intersection of SRC1 and SRC2, and copy
+     into the top of DEST those that are not already in DEST itself.  */
+  sbase = dest->nelem + src1->nelem + src2->nelem;
+  i1 = src1->nelem - 1;
+  i2 = src2->nelem - 1;
+  id = dest->nelem - 1;
+  for (;;)
+    {
+      if (src1->elems[i1] == src2->elems[i2])
+	{
+	  /* Try to find the item in DEST.  Maybe we could binary search?  */
+	  while (id >= 0 && dest->elems[id] > src1->elems[i1])
+	    --id;
+
+	  if (id < 0 || dest->elems[id] != src1->elems[i1])
+            dest->elems[--sbase] = src1->elems[i1];
+
+	  if (--i1 < 0 || --i2 < 0)
+	    break;
+	}
+
+      /* Lower the highest of the two items.  */
+      else if (src1->elems[i1] < src2->elems[i2])
+	{
+	  if (--i2 < 0)
+	    break;
+	}
+      else
+	{
+	  if (--i1 < 0)
+	    break;
+	}
+    }
+
+  id = dest->nelem - 1;
+  is = dest->nelem + src1->nelem + src2->nelem - 1;
+  delta = is - sbase + 1;
+
+  /* Now copy.  When DELTA becomes zero, the remaining
+     DEST elements are already in place; this is more or
+     less the same loop that is in re_node_set_merge.  */
+  dest->nelem += delta;
+  if (delta > 0 && id >= 0)
+    for (;;)
+      {
+	if (dest->elems[is] > dest->elems[id])
+	  {
+	    /* Copy from the top.  */
+	    dest->elems[id + delta--] = dest->elems[is--];
+	    if (delta == 0)
+	      break;
+	  }
+	else
+	  {
+	    /* Slide from the bottom.  */
+	    dest->elems[id + delta] = dest->elems[id];
+	    if (--id < 0)
+	      break;
+	  }
+      }
+
+  /* Copy remaining SRC elements.  */
+  memcpy (dest->elems, dest->elems + sbase, delta * sizeof (Idx));
+
+  return REG_NOERROR;
+}
+
+/* Calculate the union set of the sets SRC1 and SRC2. And store it to
+   DEST. Return value indicate the error code or REG_NOERROR if succeeded.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+re_node_set_init_union (re_node_set *dest, const re_node_set *src1,
+			const re_node_set *src2)
+{
+  Idx i1, i2, id;
+  if (src1 != NULL && src1->nelem > 0 && src2 != NULL && src2->nelem > 0)
+    {
+      dest->alloc = src1->nelem + src2->nelem;
+      dest->elems = re_malloc (Idx, dest->alloc);
+      if (__glibc_unlikely (dest->elems == NULL))
+	return REG_ESPACE;
+    }
+  else
+    {
+      if (src1 != NULL && src1->nelem > 0)
+	return re_node_set_init_copy (dest, src1);
+      else if (src2 != NULL && src2->nelem > 0)
+	return re_node_set_init_copy (dest, src2);
+      else
+	re_node_set_init_empty (dest);
+      return REG_NOERROR;
+    }
+  for (i1 = i2 = id = 0 ; i1 < src1->nelem && i2 < src2->nelem ;)
+    {
+      if (src1->elems[i1] > src2->elems[i2])
+	{
+	  dest->elems[id++] = src2->elems[i2++];
+	  continue;
+	}
+      if (src1->elems[i1] == src2->elems[i2])
+	++i2;
+      dest->elems[id++] = src1->elems[i1++];
+    }
+  if (i1 < src1->nelem)
+    {
+      memcpy (dest->elems + id, src1->elems + i1,
+	     (src1->nelem - i1) * sizeof (Idx));
+      id += src1->nelem - i1;
+    }
+  else if (i2 < src2->nelem)
+    {
+      memcpy (dest->elems + id, src2->elems + i2,
+	     (src2->nelem - i2) * sizeof (Idx));
+      id += src2->nelem - i2;
+    }
+  dest->nelem = id;
+  return REG_NOERROR;
+}
+
+/* Calculate the union set of the sets DEST and SRC. And store it to
+   DEST. Return value indicate the error code or REG_NOERROR if succeeded.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+re_node_set_merge (re_node_set *dest, const re_node_set *src)
+{
+  Idx is, id, sbase, delta;
+  if (src == NULL || src->nelem == 0)
+    return REG_NOERROR;
+  if (dest->alloc < 2 * src->nelem + dest->nelem)
+    {
+      Idx new_alloc = 2 * (src->nelem + dest->alloc);
+      Idx *new_buffer = re_realloc (dest->elems, Idx, new_alloc);
+      if (__glibc_unlikely (new_buffer == NULL))
+	return REG_ESPACE;
+      dest->elems = new_buffer;
+      dest->alloc = new_alloc;
+    }
+
+  if (__glibc_unlikely (dest->nelem == 0))
+    {
+      /* Although we already guaranteed above that dest->alloc != 0 and
+         therefore dest->elems != NULL, add a debug assertion to pacify
+         GCC 11.2.1's -fanalyzer.  */
+      DEBUG_ASSERT (dest->elems);
+      dest->nelem = src->nelem;
+      memcpy (dest->elems, src->elems, src->nelem * sizeof (Idx));
+      return REG_NOERROR;
+    }
+
+  /* Copy into the top of DEST the items of SRC that are not
+     found in DEST.  Maybe we could binary search in DEST?  */
+  for (sbase = dest->nelem + 2 * src->nelem,
+       is = src->nelem - 1, id = dest->nelem - 1; is >= 0 && id >= 0; )
+    {
+      if (dest->elems[id] == src->elems[is])
+	is--, id--;
+      else if (dest->elems[id] < src->elems[is])
+	dest->elems[--sbase] = src->elems[is--];
+      else /* if (dest->elems[id] > src->elems[is]) */
+	--id;
+    }
+
+  if (is >= 0)
+    {
+      /* If DEST is exhausted, the remaining items of SRC must be unique.  */
+      sbase -= is + 1;
+      memcpy (dest->elems + sbase, src->elems, (is + 1) * sizeof (Idx));
+    }
+
+  id = dest->nelem - 1;
+  is = dest->nelem + 2 * src->nelem - 1;
+  delta = is - sbase + 1;
+  if (delta == 0)
+    return REG_NOERROR;
+
+  /* Now copy.  When DELTA becomes zero, the remaining
+     DEST elements are already in place.  */
+  dest->nelem += delta;
+  for (;;)
+    {
+      if (dest->elems[is] > dest->elems[id])
+	{
+	  /* Copy from the top.  */
+	  dest->elems[id + delta--] = dest->elems[is--];
+	  if (delta == 0)
+	    break;
+	}
+      else
+	{
+	  /* Slide from the bottom.  */
+	  dest->elems[id + delta] = dest->elems[id];
+	  if (--id < 0)
+	    {
+	      /* Copy remaining SRC elements.  */
+	      memcpy (dest->elems, dest->elems + sbase,
+		      delta * sizeof (Idx));
+	      break;
+	    }
+	}
+    }
+
+  return REG_NOERROR;
+}
+
+/* Insert the new element ELEM to the re_node_set* SET.
+   SET should not already have ELEM.
+   Return true if successful.  */
+
+static bool
+__attribute_warn_unused_result__
+re_node_set_insert (re_node_set *set, Idx elem)
+{
+  Idx idx;
+  /* In case the set is empty.  */
+  if (set->alloc == 0)
+    return __glibc_likely (re_node_set_init_1 (set, elem) == REG_NOERROR);
+
+  if (__glibc_unlikely (set->nelem) == 0)
+    {
+      /* Although we already guaranteed above that set->alloc != 0 and
+         therefore set->elems != NULL, add a debug assertion to pacify
+         GCC 11.2 -fanalyzer.  */
+      DEBUG_ASSERT (set->elems);
+      set->elems[0] = elem;
+      ++set->nelem;
+      return true;
+    }
+
+  /* Realloc if we need.  */
+  if (set->alloc == set->nelem)
+    {
+      Idx *new_elems;
+      set->alloc = set->alloc * 2;
+      new_elems = re_realloc (set->elems, Idx, set->alloc);
+      if (__glibc_unlikely (new_elems == NULL))
+	return false;
+      set->elems = new_elems;
+    }
+
+  /* Move the elements which follows the new element.  Test the
+     first element separately to skip a check in the inner loop.  */
+  if (elem < set->elems[0])
+    {
+      for (idx = set->nelem; idx > 0; idx--)
+	set->elems[idx] = set->elems[idx - 1];
+    }
+  else
+    {
+      for (idx = set->nelem; set->elems[idx - 1] > elem; idx--)
+	set->elems[idx] = set->elems[idx - 1];
+      DEBUG_ASSERT (set->elems[idx - 1] < elem);
+    }
+
+  /* Insert the new element.  */
+  set->elems[idx] = elem;
+  ++set->nelem;
+  return true;
+}
+
+/* Insert the new element ELEM to the re_node_set* SET.
+   SET should not already have any element greater than or equal to ELEM.
+   Return true if successful.  */
+
+static bool
+__attribute_warn_unused_result__
+re_node_set_insert_last (re_node_set *set, Idx elem)
+{
+  /* Realloc if we need.  */
+  if (set->alloc == set->nelem)
+    {
+      Idx *new_elems;
+      set->alloc = (set->alloc + 1) * 2;
+      new_elems = re_realloc (set->elems, Idx, set->alloc);
+      if (__glibc_unlikely (new_elems == NULL))
+	return false;
+      set->elems = new_elems;
+    }
+
+  /* Insert the new element.  */
+  set->elems[set->nelem++] = elem;
+  return true;
+}
+
+/* Compare two node sets SET1 and SET2.
+   Return true if SET1 and SET2 are equivalent.  */
+
+static bool
+__attribute__ ((pure))
+re_node_set_compare (const re_node_set *set1, const re_node_set *set2)
+{
+  Idx i;
+  if (set1 == NULL || set2 == NULL || set1->nelem != set2->nelem)
+    return false;
+  for (i = set1->nelem ; --i >= 0 ; )
+    if (set1->elems[i] != set2->elems[i])
+      return false;
+  return true;
+}
+
+/* Return (idx + 1) if SET contains the element ELEM, return 0 otherwise.  */
+
+static Idx
+__attribute__ ((pure))
+re_node_set_contains (const re_node_set *set, Idx elem)
+{
+  __re_size_t idx, right, mid;
+  if (set->nelem <= 0)
+    return 0;
+
+  /* Binary search the element.  */
+  idx = 0;
+  right = set->nelem - 1;
+  while (idx < right)
+    {
+      mid = (idx + right) / 2;
+      if (set->elems[mid] < elem)
+	idx = mid + 1;
+      else
+	right = mid;
+    }
+  return set->elems[idx] == elem ? idx + 1 : 0;
+}
+
+static void
+re_node_set_remove_at (re_node_set *set, Idx idx)
+{
+  if (idx < 0 || idx >= set->nelem)
+    return;
+  --set->nelem;
+  for (; idx < set->nelem; idx++)
+    set->elems[idx] = set->elems[idx + 1];
+}
+
+
+/* Add the token TOKEN to dfa->nodes, and return the index of the token.
+   Or return -1 if an error occurred.  */
+
+static Idx
+re_dfa_add_node (re_dfa_t *dfa, re_token_t token)
+{
+  if (__glibc_unlikely (dfa->nodes_len >= dfa->nodes_alloc))
+    {
+      size_t new_nodes_alloc = dfa->nodes_alloc * 2;
+      Idx *new_nexts, *new_indices;
+      re_node_set *new_edests, *new_eclosures;
+      re_token_t *new_nodes;
+
+      /* Avoid overflows in realloc.  */
+      const size_t max_object_size = MAX (sizeof (re_token_t),
+					  MAX (sizeof (re_node_set),
+					       sizeof (Idx)));
+      if (__glibc_unlikely (MIN (IDX_MAX, SIZE_MAX / max_object_size)
+			    < new_nodes_alloc))
+	return -1;
+
+      new_nodes = re_realloc (dfa->nodes, re_token_t, new_nodes_alloc);
+      if (__glibc_unlikely (new_nodes == NULL))
+	return -1;
+      dfa->nodes = new_nodes;
+      new_nexts = re_realloc (dfa->nexts, Idx, new_nodes_alloc);
+      new_indices = re_realloc (dfa->org_indices, Idx, new_nodes_alloc);
+      new_edests = re_realloc (dfa->edests, re_node_set, new_nodes_alloc);
+      new_eclosures = re_realloc (dfa->eclosures, re_node_set, new_nodes_alloc);
+      if (__glibc_unlikely (new_nexts == NULL || new_indices == NULL
+			    || new_edests == NULL || new_eclosures == NULL))
+	{
+	   re_free (new_nexts);
+	   re_free (new_indices);
+	   re_free (new_edests);
+	   re_free (new_eclosures);
+	   return -1;
+	}
+      dfa->nexts = new_nexts;
+      dfa->org_indices = new_indices;
+      dfa->edests = new_edests;
+      dfa->eclosures = new_eclosures;
+      dfa->nodes_alloc = new_nodes_alloc;
+    }
+  dfa->nodes[dfa->nodes_len] = token;
+  dfa->nodes[dfa->nodes_len].constraint = 0;
+#ifdef RE_ENABLE_I18N
+  dfa->nodes[dfa->nodes_len].accept_mb =
+    ((token.type == OP_PERIOD && dfa->mb_cur_max > 1)
+     || token.type == COMPLEX_BRACKET);
+#endif
+  dfa->nexts[dfa->nodes_len] = -1;
+  re_node_set_init_empty (dfa->edests + dfa->nodes_len);
+  re_node_set_init_empty (dfa->eclosures + dfa->nodes_len);
+  return dfa->nodes_len++;
+}
+
+static re_hashval_t
+calc_state_hash (const re_node_set *nodes, unsigned int context)
+{
+  re_hashval_t hash = nodes->nelem + context;
+  Idx i;
+  for (i = 0 ; i < nodes->nelem ; i++)
+    hash += nodes->elems[i];
+  return hash;
+}
+
+/* Search for the state whose node_set is equivalent to NODES.
+   Return the pointer to the state, if we found it in the DFA.
+   Otherwise create the new one and return it.  In case of an error
+   return NULL and set the error code in ERR.
+   Note: - We assume NULL as the invalid state, then it is possible that
+	   return value is NULL and ERR is REG_NOERROR.
+	 - We never return non-NULL value in case of any errors, it is for
+	   optimization.  */
+
+static re_dfastate_t *
+__attribute_warn_unused_result__
+re_acquire_state (reg_errcode_t *err, const re_dfa_t *dfa,
+		  const re_node_set *nodes)
+{
+  re_hashval_t hash;
+  re_dfastate_t *new_state;
+  struct re_state_table_entry *spot;
+  Idx i;
+#if defined GCC_LINT || defined lint
+  /* Suppress bogus uninitialized-variable warnings.  */
+  *err = REG_NOERROR;
+#endif
+  if (__glibc_unlikely (nodes->nelem == 0))
+    {
+      *err = REG_NOERROR;
+      return NULL;
+    }
+  hash = calc_state_hash (nodes, 0);
+  spot = dfa->state_table + (hash & dfa->state_hash_mask);
+
+  for (i = 0 ; i < spot->num ; i++)
+    {
+      re_dfastate_t *state = spot->array[i];
+      if (hash != state->hash)
+	continue;
+      if (re_node_set_compare (&state->nodes, nodes))
+	return state;
+    }
+
+  /* There are no appropriate state in the dfa, create the new one.  */
+  new_state = create_ci_newstate (dfa, nodes, hash);
+  if (__glibc_unlikely (new_state == NULL))
+    *err = REG_ESPACE;
+
+  return new_state;
+}
+
+/* Search for the state whose node_set is equivalent to NODES and
+   whose context is equivalent to CONTEXT.
+   Return the pointer to the state, if we found it in the DFA.
+   Otherwise create the new one and return it.  In case of an error
+   return NULL and set the error code in ERR.
+   Note: - We assume NULL as the invalid state, then it is possible that
+	   return value is NULL and ERR is REG_NOERROR.
+	 - We never return non-NULL value in case of any errors, it is for
+	   optimization.  */
+
+static re_dfastate_t *
+__attribute_warn_unused_result__
+re_acquire_state_context (reg_errcode_t *err, const re_dfa_t *dfa,
+			  const re_node_set *nodes, unsigned int context)
+{
+  re_hashval_t hash;
+  re_dfastate_t *new_state;
+  struct re_state_table_entry *spot;
+  Idx i;
+#if defined GCC_LINT || defined lint
+  /* Suppress bogus uninitialized-variable warnings.  */
+  *err = REG_NOERROR;
+#endif
+  if (nodes->nelem == 0)
+    {
+      *err = REG_NOERROR;
+      return NULL;
+    }
+  hash = calc_state_hash (nodes, context);
+  spot = dfa->state_table + (hash & dfa->state_hash_mask);
+
+  for (i = 0 ; i < spot->num ; i++)
+    {
+      re_dfastate_t *state = spot->array[i];
+      if (state->hash == hash
+	  && state->context == context
+	  && re_node_set_compare (state->entrance_nodes, nodes))
+	return state;
+    }
+  /* There are no appropriate state in 'dfa', create the new one.  */
+  new_state = create_cd_newstate (dfa, nodes, context, hash);
+  if (__glibc_unlikely (new_state == NULL))
+    *err = REG_ESPACE;
+
+  return new_state;
+}
+
+/* Finish initialization of the new state NEWSTATE, and using its hash value
+   HASH put in the appropriate bucket of DFA's state table.  Return value
+   indicates the error code if failed.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+register_state (const re_dfa_t *dfa, re_dfastate_t *newstate,
+		re_hashval_t hash)
+{
+  struct re_state_table_entry *spot;
+  reg_errcode_t err;
+  Idx i;
+
+  newstate->hash = hash;
+  err = re_node_set_alloc (&newstate->non_eps_nodes, newstate->nodes.nelem);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    return REG_ESPACE;
+  for (i = 0; i < newstate->nodes.nelem; i++)
+    {
+      Idx elem = newstate->nodes.elems[i];
+      if (!IS_EPSILON_NODE (dfa->nodes[elem].type))
+	if (! re_node_set_insert_last (&newstate->non_eps_nodes, elem))
+	  return REG_ESPACE;
+    }
+
+  spot = dfa->state_table + (hash & dfa->state_hash_mask);
+  if (__glibc_unlikely (spot->alloc <= spot->num))
+    {
+      Idx new_alloc = 2 * spot->num + 2;
+      re_dfastate_t **new_array = re_realloc (spot->array, re_dfastate_t *,
+					      new_alloc);
+      if (__glibc_unlikely (new_array == NULL))
+	return REG_ESPACE;
+      spot->array = new_array;
+      spot->alloc = new_alloc;
+    }
+  spot->array[spot->num++] = newstate;
+  return REG_NOERROR;
+}
+
+static void
+free_state (re_dfastate_t *state)
+{
+  re_node_set_free (&state->non_eps_nodes);
+  re_node_set_free (&state->inveclosure);
+  if (state->entrance_nodes != &state->nodes)
+    {
+      re_node_set_free (state->entrance_nodes);
+      re_free (state->entrance_nodes);
+    }
+  re_node_set_free (&state->nodes);
+  re_free (state->word_trtable);
+  re_free (state->trtable);
+  re_free (state);
+}
+
+/* Create the new state which is independent of contexts.
+   Return the new state if succeeded, otherwise return NULL.  */
+
+static re_dfastate_t *
+__attribute_warn_unused_result__
+create_ci_newstate (const re_dfa_t *dfa, const re_node_set *nodes,
+		    re_hashval_t hash)
+{
+  Idx i;
+  reg_errcode_t err;
+  re_dfastate_t *newstate;
+
+  newstate = (re_dfastate_t *) calloc (sizeof (re_dfastate_t), 1);
+  if (__glibc_unlikely (newstate == NULL))
+    return NULL;
+  err = re_node_set_init_copy (&newstate->nodes, nodes);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    {
+      re_free (newstate);
+      return NULL;
+    }
+
+  newstate->entrance_nodes = &newstate->nodes;
+  for (i = 0 ; i < nodes->nelem ; i++)
+    {
+      re_token_t *node = dfa->nodes + nodes->elems[i];
+      re_token_type_t type = node->type;
+      if (type == CHARACTER && !node->constraint)
+	continue;
+#ifdef RE_ENABLE_I18N
+      newstate->accept_mb |= node->accept_mb;
+#endif /* RE_ENABLE_I18N */
+
+      /* If the state has the halt node, the state is a halt state.  */
+      if (type == END_OF_RE)
+	newstate->halt = 1;
+      else if (type == OP_BACK_REF)
+	newstate->has_backref = 1;
+      else if (type == ANCHOR || node->constraint)
+	newstate->has_constraint = 1;
+    }
+  err = register_state (dfa, newstate, hash);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    {
+      free_state (newstate);
+      newstate = NULL;
+    }
+  return newstate;
+}
+
+/* Create the new state which is depend on the context CONTEXT.
+   Return the new state if succeeded, otherwise return NULL.  */
+
+static re_dfastate_t *
+__attribute_warn_unused_result__
+create_cd_newstate (const re_dfa_t *dfa, const re_node_set *nodes,
+		    unsigned int context, re_hashval_t hash)
+{
+  Idx i, nctx_nodes = 0;
+  reg_errcode_t err;
+  re_dfastate_t *newstate;
+
+  newstate = (re_dfastate_t *) calloc (sizeof (re_dfastate_t), 1);
+  if (__glibc_unlikely (newstate == NULL))
+    return NULL;
+  err = re_node_set_init_copy (&newstate->nodes, nodes);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    {
+      re_free (newstate);
+      return NULL;
+    }
+
+  newstate->context = context;
+  newstate->entrance_nodes = &newstate->nodes;
+
+  for (i = 0 ; i < nodes->nelem ; i++)
+    {
+      re_token_t *node = dfa->nodes + nodes->elems[i];
+      re_token_type_t type = node->type;
+      unsigned int constraint = node->constraint;
+
+      if (type == CHARACTER && !constraint)
+	continue;
+#ifdef RE_ENABLE_I18N
+      newstate->accept_mb |= node->accept_mb;
+#endif /* RE_ENABLE_I18N */
+
+      /* If the state has the halt node, the state is a halt state.  */
+      if (type == END_OF_RE)
+	newstate->halt = 1;
+      else if (type == OP_BACK_REF)
+	newstate->has_backref = 1;
+
+      if (constraint)
+	{
+	  if (newstate->entrance_nodes == &newstate->nodes)
+	    {
+	      re_node_set *entrance_nodes = re_malloc (re_node_set, 1);
+	      if (__glibc_unlikely (entrance_nodes == NULL))
+		{
+		  free_state (newstate);
+		  return NULL;
+		}
+	      newstate->entrance_nodes = entrance_nodes;
+	      if (re_node_set_init_copy (newstate->entrance_nodes, nodes)
+		  != REG_NOERROR)
+		{
+		  free_state (newstate);
+		  return NULL;
+		}
+	      nctx_nodes = 0;
+	      newstate->has_constraint = 1;
+	    }
+
+	  if (NOT_SATISFY_PREV_CONSTRAINT (constraint,context))
+	    {
+	      re_node_set_remove_at (&newstate->nodes, i - nctx_nodes);
+	      ++nctx_nodes;
+	    }
+	}
+    }
+  err = register_state (dfa, newstate, hash);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    {
+      free_state (newstate);
+      newstate = NULL;
+    }
+  return  newstate;
+}
diff --git a/src/grep/lib/regex_internal.h b/src/grep/lib/regex_internal.h
new file mode 100644
index 0000000..a4d26c6
--- /dev/null
+++ b/src/grep/lib/regex_internal.h
@@ -0,0 +1,848 @@
+/* Extended regular expression matching and search library.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _REGEX_INTERNAL_H
+#define _REGEX_INTERNAL_H 1
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if !defined(KMK_GREP) || !defined(_MSC_VER)
+#include <langinfo.h>
+#endif
+#include <locale.h>
+#include <wchar.h>
+#include <wctype.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#ifndef _LIBC
+# include <dynarray.h>
+#endif
+
+#include <intprops.h>
+#include <verify.h>
+
+#if defined DEBUG && DEBUG != 0
+# include <assert.h>
+# define DEBUG_ASSERT(x) assert (x)
+#else
+# define DEBUG_ASSERT(x) assume (x)
+#endif
+
+#ifdef _LIBC
+# include <libc-lock.h>
+# define lock_define(name) __libc_lock_define (, name)
+# define lock_init(lock) (__libc_lock_init (lock), 0)
+# define lock_fini(lock) ((void) 0)
+# define lock_lock(lock) __libc_lock_lock (lock)
+# define lock_unlock(lock) __libc_lock_unlock (lock)
+#elif defined GNULIB_LOCK && !defined GNULIB_REGEX_SINGLE_THREAD
+# include "glthread/lock.h"
+# define lock_define(name) gl_lock_define (, name)
+# define lock_init(lock) glthread_lock_init (&(lock))
+# define lock_fini(lock) glthread_lock_destroy (&(lock))
+# define lock_lock(lock) glthread_lock_lock (&(lock))
+# define lock_unlock(lock) glthread_lock_unlock (&(lock))
+#elif defined GNULIB_PTHREAD && !defined GNULIB_REGEX_SINGLE_THREAD
+# include <pthread.h>
+# define lock_define(name) pthread_mutex_t name;
+# define lock_init(lock) pthread_mutex_init (&(lock), 0)
+# define lock_fini(lock) pthread_mutex_destroy (&(lock))
+# define lock_lock(lock) pthread_mutex_lock (&(lock))
+# define lock_unlock(lock) pthread_mutex_unlock (&(lock))
+#else
+# define lock_define(name)
+# define lock_init(lock) 0
+# define lock_fini(lock) ((void) 0)
+  /* The 'dfa' avoids an "unused variable 'dfa'" warning from GCC.  */
+# define lock_lock(lock) ((void) dfa)
+# define lock_unlock(lock) ((void) 0)
+#endif
+
+/* In case that the system doesn't have isblank().  */
+#if !defined _LIBC && ! (defined isblank || (HAVE_ISBLANK && HAVE_DECL_ISBLANK))
+# define isblank(ch) ((ch) == ' ' || (ch) == '\t')
+#endif
+
+/* regex code assumes isascii has its usual numeric meaning,
+   even if the portable character set uses EBCDIC encoding,
+   and even if wint_t is wider than int.  */
+#ifndef _LIBC
+# undef isascii
+# define isascii(c) (((c) & ~0x7f) == 0)
+#endif
+
+#ifdef _LIBC
+# ifndef _RE_DEFINE_LOCALE_FUNCTIONS
+#  define _RE_DEFINE_LOCALE_FUNCTIONS 1
+#   include <locale/localeinfo.h>
+#   include <locale/coll-lookup.h>
+# endif
+#endif
+
+/* This is for other GNU distributions with internationalized messages.  */
+#if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC
+# include <libintl.h>
+# ifdef _LIBC
+#  undef gettext
+#  define gettext(msgid) \
+  __dcgettext (_libc_intl_domainname, msgid, LC_MESSAGES)
+# endif
+#else
+# undef gettext
+# define gettext(msgid) (msgid)
+#endif
+
+#ifndef gettext_noop
+/* This define is so xgettext can find the internationalizable
+   strings.  */
+# define gettext_noop(String) String
+#endif
+
+#if (defined MB_CUR_MAX && HAVE_WCTYPE_H && HAVE_ISWCTYPE) || _LIBC
+# define RE_ENABLE_I18N
+#endif
+
+/* Number of ASCII characters.  */
+#define ASCII_CHARS 0x80
+
+/* Number of single byte characters.  */
+#define SBC_MAX (UCHAR_MAX + 1)
+
+#define COLL_ELEM_LEN_MAX 8
+
+/* The character which represents newline.  */
+#define NEWLINE_CHAR '\n'
+#define WIDE_NEWLINE_CHAR L'\n'
+
+/* Rename to standard API for using out of glibc.  */
+#ifndef _LIBC
+# undef __wctype
+# undef __iswalnum
+# undef __iswctype
+# undef __towlower
+# undef __towupper
+# define __wctype wctype
+# define __iswalnum iswalnum
+# define __iswctype iswctype
+# define __towlower towlower
+# define __towupper towupper
+# define __btowc btowc
+# define __mbrtowc mbrtowc
+# define __wcrtomb wcrtomb
+# define __regfree regfree
+#endif /* not _LIBC */
+
+#ifndef SSIZE_MAX
+# define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2))
+#endif
+#ifndef ULONG_WIDTH
+# define ULONG_WIDTH REGEX_UINTEGER_WIDTH (ULONG_MAX)
+/* The number of usable bits in an unsigned integer type with maximum
+   value MAX, as an int expression suitable in #if.  Cover all known
+   practical hosts.  This implementation exploits the fact that MAX is
+   1 less than a power of 2, and merely counts the number of 1 bits in
+   MAX; "COBn" means "count the number of 1 bits in the low-order n bits".  */
+# define REGEX_UINTEGER_WIDTH(max) REGEX_COB128 (max)
+# define REGEX_COB128(n) (REGEX_COB64 ((n) >> 31 >> 31 >> 2) + REGEX_COB64 (n))
+# define REGEX_COB64(n) (REGEX_COB32 ((n) >> 31 >> 1) + REGEX_COB32 (n))
+# define REGEX_COB32(n) (REGEX_COB16 ((n) >> 16) + REGEX_COB16 (n))
+# define REGEX_COB16(n) (REGEX_COB8 ((n) >> 8) + REGEX_COB8 (n))
+# define REGEX_COB8(n) (REGEX_COB4 ((n) >> 4) + REGEX_COB4 (n))
+# define REGEX_COB4(n) (!!((n) & 8) + !!((n) & 4) + !!((n) & 2) + ((n) & 1))
+# if ULONG_MAX / 2 + 1 != 1ul << (ULONG_WIDTH - 1)
+#  error "ULONG_MAX out of range"
+# endif
+#endif
+
+/* The type of indexes into strings.  This is signed, not size_t,
+   since the API requires indexes to fit in regoff_t anyway, and using
+   signed integers makes the code a bit smaller and presumably faster.
+   The traditional GNU regex implementation uses int for indexes.
+   The POSIX-compatible implementation uses a possibly-wider type.
+   The name 'Idx' is three letters to minimize the hassle of
+   reindenting a lot of regex code that formerly used 'int'.  */
+typedef regoff_t Idx;
+#ifdef _REGEX_LARGE_OFFSETS
+# define IDX_MAX SSIZE_MAX
+#else
+# define IDX_MAX INT_MAX
+#endif
+
+/* A hash value, suitable for computing hash tables.  */
+typedef __re_size_t re_hashval_t;
+
+/* An integer used to represent a set of bits.  It must be unsigned,
+   and must be at least as wide as unsigned int.  */
+typedef unsigned long int bitset_word_t;
+/* All bits set in a bitset_word_t.  */
+#define BITSET_WORD_MAX ULONG_MAX
+/* Number of bits in a bitset_word_t.  */
+#define BITSET_WORD_BITS ULONG_WIDTH
+
+/* Number of bitset_word_t values in a bitset_t.  */
+#define BITSET_WORDS ((SBC_MAX + BITSET_WORD_BITS - 1) / BITSET_WORD_BITS)
+
+typedef bitset_word_t bitset_t[BITSET_WORDS];
+typedef bitset_word_t *re_bitset_ptr_t;
+typedef const bitset_word_t *re_const_bitset_ptr_t;
+
+#define PREV_WORD_CONSTRAINT 0x0001
+#define PREV_NOTWORD_CONSTRAINT 0x0002
+#define NEXT_WORD_CONSTRAINT 0x0004
+#define NEXT_NOTWORD_CONSTRAINT 0x0008
+#define PREV_NEWLINE_CONSTRAINT 0x0010
+#define NEXT_NEWLINE_CONSTRAINT 0x0020
+#define PREV_BEGBUF_CONSTRAINT 0x0040
+#define NEXT_ENDBUF_CONSTRAINT 0x0080
+#define WORD_DELIM_CONSTRAINT 0x0100
+#define NOT_WORD_DELIM_CONSTRAINT 0x0200
+
+typedef enum
+{
+  INSIDE_WORD = PREV_WORD_CONSTRAINT | NEXT_WORD_CONSTRAINT,
+  WORD_FIRST = PREV_NOTWORD_CONSTRAINT | NEXT_WORD_CONSTRAINT,
+  WORD_LAST = PREV_WORD_CONSTRAINT | NEXT_NOTWORD_CONSTRAINT,
+  INSIDE_NOTWORD = PREV_NOTWORD_CONSTRAINT | NEXT_NOTWORD_CONSTRAINT,
+  LINE_FIRST = PREV_NEWLINE_CONSTRAINT,
+  LINE_LAST = NEXT_NEWLINE_CONSTRAINT,
+  BUF_FIRST = PREV_BEGBUF_CONSTRAINT,
+  BUF_LAST = NEXT_ENDBUF_CONSTRAINT,
+  WORD_DELIM = WORD_DELIM_CONSTRAINT,
+  NOT_WORD_DELIM = NOT_WORD_DELIM_CONSTRAINT
+} re_context_type;
+
+typedef struct
+{
+  Idx alloc;
+  Idx nelem;
+  Idx *elems;
+} re_node_set;
+
+typedef enum
+{
+  NON_TYPE = 0,
+
+  /* Node type, These are used by token, node, tree.  */
+  CHARACTER = 1,
+  END_OF_RE = 2,
+  SIMPLE_BRACKET = 3,
+  OP_BACK_REF = 4,
+  OP_PERIOD = 5,
+#ifdef RE_ENABLE_I18N
+  COMPLEX_BRACKET = 6,
+  OP_UTF8_PERIOD = 7,
+#endif /* RE_ENABLE_I18N */
+
+  /* We define EPSILON_BIT as a macro so that OP_OPEN_SUBEXP is used
+     when the debugger shows values of this enum type.  */
+#define EPSILON_BIT 8
+  OP_OPEN_SUBEXP = EPSILON_BIT | 0,
+  OP_CLOSE_SUBEXP = EPSILON_BIT | 1,
+  OP_ALT = EPSILON_BIT | 2,
+  OP_DUP_ASTERISK = EPSILON_BIT | 3,
+  ANCHOR = EPSILON_BIT | 4,
+
+  /* Tree type, these are used only by tree. */
+  CONCAT = 16,
+  SUBEXP = 17,
+
+  /* Token type, these are used only by token.  */
+  OP_DUP_PLUS = 18,
+  OP_DUP_QUESTION,
+  OP_OPEN_BRACKET,
+  OP_CLOSE_BRACKET,
+  OP_CHARSET_RANGE,
+  OP_OPEN_DUP_NUM,
+  OP_CLOSE_DUP_NUM,
+  OP_NON_MATCH_LIST,
+  OP_OPEN_COLL_ELEM,
+  OP_CLOSE_COLL_ELEM,
+  OP_OPEN_EQUIV_CLASS,
+  OP_CLOSE_EQUIV_CLASS,
+  OP_OPEN_CHAR_CLASS,
+  OP_CLOSE_CHAR_CLASS,
+  OP_WORD,
+  OP_NOTWORD,
+  OP_SPACE,
+  OP_NOTSPACE,
+  BACK_SLASH
+
+} re_token_type_t;
+
+#ifdef RE_ENABLE_I18N
+typedef struct
+{
+  /* Multibyte characters.  */
+  wchar_t *mbchars;
+
+  /* Collating symbols.  */
+# ifdef _LIBC
+  int32_t *coll_syms;
+# endif
+
+  /* Equivalence classes. */
+# ifdef _LIBC
+  int32_t *equiv_classes;
+# endif
+
+  /* Range expressions. */
+# ifdef _LIBC
+  uint32_t *range_starts;
+  uint32_t *range_ends;
+# else /* not _LIBC */
+  wchar_t *range_starts;
+  wchar_t *range_ends;
+# endif /* not _LIBC */
+
+  /* Character classes. */
+  wctype_t *char_classes;
+
+  /* If this character set is the non-matching list.  */
+  unsigned int non_match : 1;
+
+  /* # of multibyte characters.  */
+  Idx nmbchars;
+
+  /* # of collating symbols.  */
+  Idx ncoll_syms;
+
+  /* # of equivalence classes. */
+  Idx nequiv_classes;
+
+  /* # of range expressions. */
+  Idx nranges;
+
+  /* # of character classes. */
+  Idx nchar_classes;
+} re_charset_t;
+#endif /* RE_ENABLE_I18N */
+
+typedef struct
+{
+  union
+  {
+    unsigned char c;		/* for CHARACTER */
+    re_bitset_ptr_t sbcset;	/* for SIMPLE_BRACKET */
+#ifdef RE_ENABLE_I18N
+    re_charset_t *mbcset;	/* for COMPLEX_BRACKET */
+#endif /* RE_ENABLE_I18N */
+    Idx idx;			/* for BACK_REF */
+    re_context_type ctx_type;	/* for ANCHOR */
+  } opr;
+#if (__GNUC__ >= 2 || defined __clang__) && !defined __STRICT_ANSI__
+  re_token_type_t type : 8;
+#else
+  re_token_type_t type;
+#endif
+  unsigned int constraint : 10;	/* context constraint */
+  unsigned int duplicated : 1;
+  unsigned int opt_subexp : 1;
+#ifdef RE_ENABLE_I18N
+  unsigned int accept_mb : 1;
+  /* These 2 bits can be moved into the union if needed (e.g. if running out
+     of bits; move opr.c to opr.c.c and move the flags to opr.c.flags).  */
+  unsigned int mb_partial : 1;
+#endif
+  unsigned int word_char : 1;
+} re_token_t;
+
+#define IS_EPSILON_NODE(type) ((type) & EPSILON_BIT)
+
+struct re_string_t
+{
+  /* Indicate the raw buffer which is the original string passed as an
+     argument of regexec(), re_search(), etc..  */
+  const unsigned char *raw_mbs;
+  /* Store the multibyte string.  In case of "case insensitive mode" like
+     REG_ICASE, upper cases of the string are stored, otherwise MBS points
+     the same address that RAW_MBS points.  */
+  unsigned char *mbs;
+#ifdef RE_ENABLE_I18N
+  /* Store the wide character string which is corresponding to MBS.  */
+  wint_t *wcs;
+  Idx *offsets;
+  mbstate_t cur_state;
+#endif
+  /* Index in RAW_MBS.  Each character mbs[i] corresponds to
+     raw_mbs[raw_mbs_idx + i].  */
+  Idx raw_mbs_idx;
+  /* The length of the valid characters in the buffers.  */
+  Idx valid_len;
+  /* The corresponding number of bytes in raw_mbs array.  */
+  Idx valid_raw_len;
+  /* The length of the buffers MBS and WCS.  */
+  Idx bufs_len;
+  /* The index in MBS, which is updated by re_string_fetch_byte.  */
+  Idx cur_idx;
+  /* length of RAW_MBS array.  */
+  Idx raw_len;
+  /* This is RAW_LEN - RAW_MBS_IDX + VALID_LEN - VALID_RAW_LEN.  */
+  Idx len;
+  /* End of the buffer may be shorter than its length in the cases such
+     as re_match_2, re_search_2.  Then, we use STOP for end of the buffer
+     instead of LEN.  */
+  Idx raw_stop;
+  /* This is RAW_STOP - RAW_MBS_IDX adjusted through OFFSETS.  */
+  Idx stop;
+
+  /* The context of mbs[0].  We store the context independently, since
+     the context of mbs[0] may be different from raw_mbs[0], which is
+     the beginning of the input string.  */
+  unsigned int tip_context;
+  /* The translation passed as a part of an argument of re_compile_pattern.  */
+  RE_TRANSLATE_TYPE trans;
+  /* Copy of re_dfa_t's word_char.  */
+  re_const_bitset_ptr_t word_char;
+  /* true if REG_ICASE.  */
+  unsigned char icase;
+  unsigned char is_utf8;
+  unsigned char map_notascii;
+  unsigned char mbs_allocated;
+  unsigned char offsets_needed;
+  unsigned char newline_anchor;
+  unsigned char word_ops_used;
+  int mb_cur_max;
+};
+typedef struct re_string_t re_string_t;
+
+
+struct re_dfa_t;
+typedef struct re_dfa_t re_dfa_t;
+
+#ifndef _LIBC
+# define IS_IN(libc) false
+#endif
+
+#define re_string_peek_byte(pstr, offset) \
+  ((pstr)->mbs[(pstr)->cur_idx + offset])
+#define re_string_fetch_byte(pstr) \
+  ((pstr)->mbs[(pstr)->cur_idx++])
+#define re_string_first_byte(pstr, idx) \
+  ((idx) == (pstr)->valid_len || (pstr)->wcs[idx] != WEOF)
+#define re_string_is_single_byte_char(pstr, idx) \
+  ((pstr)->wcs[idx] != WEOF && ((pstr)->valid_len == (idx) + 1 \
+				|| (pstr)->wcs[(idx) + 1] != WEOF))
+#define re_string_eoi(pstr) ((pstr)->stop <= (pstr)->cur_idx)
+#define re_string_cur_idx(pstr) ((pstr)->cur_idx)
+#define re_string_get_buffer(pstr) ((pstr)->mbs)
+#define re_string_length(pstr) ((pstr)->len)
+#define re_string_byte_at(pstr,idx) ((pstr)->mbs[idx])
+#define re_string_skip_bytes(pstr,idx) ((pstr)->cur_idx += (idx))
+#define re_string_set_index(pstr,idx) ((pstr)->cur_idx = (idx))
+
+#ifdef _LIBC
+# define MALLOC_0_IS_NONNULL 1
+#elif !defined MALLOC_0_IS_NONNULL
+# define MALLOC_0_IS_NONNULL 0
+#endif
+
+#ifndef MAX
+# define MAX(a,b) ((a) < (b) ? (b) : (a))
+#endif
+#ifndef MIN
+# define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+#define re_malloc(t,n) ((t *) malloc ((n) * sizeof (t)))
+#define re_realloc(p,t,n) ((t *) realloc (p, (n) * sizeof (t)))
+#define re_free(p) free (p)
+
+struct bin_tree_t
+{
+  struct bin_tree_t *parent;
+  struct bin_tree_t *left;
+  struct bin_tree_t *right;
+  struct bin_tree_t *first;
+  struct bin_tree_t *next;
+
+  re_token_t token;
+
+  /* 'node_idx' is the index in dfa->nodes, if 'type' == 0.
+     Otherwise 'type' indicate the type of this node.  */
+  Idx node_idx;
+};
+typedef struct bin_tree_t bin_tree_t;
+
+#define BIN_TREE_STORAGE_SIZE \
+  ((1024 - sizeof (void *)) / sizeof (bin_tree_t))
+
+struct bin_tree_storage_t
+{
+  struct bin_tree_storage_t *next;
+  bin_tree_t data[BIN_TREE_STORAGE_SIZE];
+};
+typedef struct bin_tree_storage_t bin_tree_storage_t;
+
+#define CONTEXT_WORD 1
+#define CONTEXT_NEWLINE (CONTEXT_WORD << 1)
+#define CONTEXT_BEGBUF (CONTEXT_NEWLINE << 1)
+#define CONTEXT_ENDBUF (CONTEXT_BEGBUF << 1)
+
+#define IS_WORD_CONTEXT(c) ((c) & CONTEXT_WORD)
+#define IS_NEWLINE_CONTEXT(c) ((c) & CONTEXT_NEWLINE)
+#define IS_BEGBUF_CONTEXT(c) ((c) & CONTEXT_BEGBUF)
+#define IS_ENDBUF_CONTEXT(c) ((c) & CONTEXT_ENDBUF)
+#define IS_ORDINARY_CONTEXT(c) ((c) == 0)
+
+#define IS_WORD_CHAR(ch) (isalnum (ch) || (ch) == '_')
+#define IS_NEWLINE(ch) ((ch) == NEWLINE_CHAR)
+#define IS_WIDE_WORD_CHAR(ch) (__iswalnum (ch) || (ch) == L'_')
+#define IS_WIDE_NEWLINE(ch) ((ch) == WIDE_NEWLINE_CHAR)
+
+#define NOT_SATISFY_PREV_CONSTRAINT(constraint,context) \
+ ((((constraint) & PREV_WORD_CONSTRAINT) && !IS_WORD_CONTEXT (context)) \
+  || ((constraint & PREV_NOTWORD_CONSTRAINT) && IS_WORD_CONTEXT (context)) \
+  || ((constraint & PREV_NEWLINE_CONSTRAINT) && !IS_NEWLINE_CONTEXT (context))\
+  || ((constraint & PREV_BEGBUF_CONSTRAINT) && !IS_BEGBUF_CONTEXT (context)))
+
+#define NOT_SATISFY_NEXT_CONSTRAINT(constraint,context) \
+ ((((constraint) & NEXT_WORD_CONSTRAINT) && !IS_WORD_CONTEXT (context)) \
+  || (((constraint) & NEXT_NOTWORD_CONSTRAINT) && IS_WORD_CONTEXT (context)) \
+  || (((constraint) & NEXT_NEWLINE_CONSTRAINT) && !IS_NEWLINE_CONTEXT (context)) \
+  || (((constraint) & NEXT_ENDBUF_CONSTRAINT) && !IS_ENDBUF_CONTEXT (context)))
+
+struct re_dfastate_t
+{
+  re_hashval_t hash;
+  re_node_set nodes;
+  re_node_set non_eps_nodes;
+  re_node_set inveclosure;
+  re_node_set *entrance_nodes;
+  struct re_dfastate_t **trtable, **word_trtable;
+  unsigned int context : 4;
+  unsigned int halt : 1;
+  /* If this state can accept "multi byte".
+     Note that we refer to multibyte characters, and multi character
+     collating elements as "multi byte".  */
+  unsigned int accept_mb : 1;
+  /* If this state has backreference node(s).  */
+  unsigned int has_backref : 1;
+  unsigned int has_constraint : 1;
+};
+typedef struct re_dfastate_t re_dfastate_t;
+
+struct re_state_table_entry
+{
+  Idx num;
+  Idx alloc;
+  re_dfastate_t **array;
+};
+
+/* Array type used in re_sub_match_last_t and re_sub_match_top_t.  */
+
+typedef struct
+{
+  Idx next_idx;
+  Idx alloc;
+  re_dfastate_t **array;
+} state_array_t;
+
+/* Store information about the node NODE whose type is OP_CLOSE_SUBEXP.  */
+
+typedef struct
+{
+  Idx node;
+  Idx str_idx; /* The position NODE match at.  */
+  state_array_t path;
+} re_sub_match_last_t;
+
+/* Store information about the node NODE whose type is OP_OPEN_SUBEXP.
+   And information about the node, whose type is OP_CLOSE_SUBEXP,
+   corresponding to NODE is stored in LASTS.  */
+
+typedef struct
+{
+  Idx str_idx;
+  Idx node;
+  state_array_t *path;
+  Idx alasts; /* Allocation size of LASTS.  */
+  Idx nlasts; /* The number of LASTS.  */
+  re_sub_match_last_t **lasts;
+} re_sub_match_top_t;
+
+struct re_backref_cache_entry
+{
+  Idx node;
+  Idx str_idx;
+  Idx subexp_from;
+  Idx subexp_to;
+  bitset_word_t eps_reachable_subexps_map;
+  char more;
+};
+
+typedef struct
+{
+  /* The string object corresponding to the input string.  */
+  re_string_t input;
+  const re_dfa_t *const dfa;
+  /* EFLAGS of the argument of regexec.  */
+  int eflags;
+  /* Where the matching ends.  */
+  Idx match_last;
+  Idx last_node;
+  /* The state log used by the matcher.  */
+  re_dfastate_t **state_log;
+  Idx state_log_top;
+  /* Back reference cache.  */
+  Idx nbkref_ents;
+  Idx abkref_ents;
+  struct re_backref_cache_entry *bkref_ents;
+  int max_mb_elem_len;
+  Idx nsub_tops;
+  Idx asub_tops;
+  re_sub_match_top_t **sub_tops;
+} re_match_context_t;
+
+typedef struct
+{
+  re_dfastate_t **sifted_states;
+  re_dfastate_t **limited_states;
+  Idx last_node;
+  Idx last_str_idx;
+  re_node_set limits;
+} re_sift_context_t;
+
+struct re_fail_stack_ent_t
+{
+  Idx idx;
+  Idx node;
+  regmatch_t *regs;
+  re_node_set eps_via_nodes;
+};
+
+struct re_fail_stack_t
+{
+  Idx num;
+  Idx alloc;
+  struct re_fail_stack_ent_t *stack;
+};
+
+struct re_dfa_t
+{
+  re_token_t *nodes;
+  size_t nodes_alloc;
+  size_t nodes_len;
+  Idx *nexts;
+  Idx *org_indices;
+  re_node_set *edests;
+  re_node_set *eclosures;
+  re_node_set *inveclosures;
+  struct re_state_table_entry *state_table;
+  re_dfastate_t *init_state;
+  re_dfastate_t *init_state_word;
+  re_dfastate_t *init_state_nl;
+  re_dfastate_t *init_state_begbuf;
+  bin_tree_t *str_tree;
+  bin_tree_storage_t *str_tree_storage;
+  re_bitset_ptr_t sb_char;
+  int str_tree_storage_idx;
+
+  /* number of subexpressions 're_nsub' is in regex_t.  */
+  re_hashval_t state_hash_mask;
+  Idx init_node;
+  Idx nbackref; /* The number of backreference in this dfa.  */
+
+  /* Bitmap expressing which backreference is used.  */
+  bitset_word_t used_bkref_map;
+  bitset_word_t completed_bkref_map;
+
+  unsigned int has_plural_match : 1;
+  /* If this dfa has "multibyte node", which is a backreference or
+     a node which can accept multibyte character or multi character
+     collating element.  */
+  unsigned int has_mb_node : 1;
+  unsigned int is_utf8 : 1;
+  unsigned int map_notascii : 1;
+  unsigned int word_ops_used : 1;
+  int mb_cur_max;
+  bitset_t word_char;
+  reg_syntax_t syntax;
+  Idx *subexp_map;
+#ifdef DEBUG
+  char* re_str;
+#endif
+  lock_define (lock)
+};
+
+#define re_node_set_init_empty(set) memset (set, '\0', sizeof (re_node_set))
+#define re_node_set_remove(set,id) \
+  (re_node_set_remove_at (set, re_node_set_contains (set, id) - 1))
+#define re_node_set_empty(p) ((p)->nelem = 0)
+#define re_node_set_free(set) re_free ((set)->elems)
+
+
+typedef enum
+{
+  SB_CHAR,
+  MB_CHAR,
+  EQUIV_CLASS,
+  COLL_SYM,
+  CHAR_CLASS
+} bracket_elem_type;
+
+typedef struct
+{
+  bracket_elem_type type;
+  union
+  {
+    unsigned char ch;
+    unsigned char *name;
+    wchar_t wch;
+  } opr;
+} bracket_elem_t;
+
+
+/* Functions for bitset_t operation.  */
+
+static inline void
+bitset_set (bitset_t set, Idx i)
+{
+  set[i / BITSET_WORD_BITS] |= (bitset_word_t) 1 << i % BITSET_WORD_BITS;
+}
+
+static inline void
+bitset_clear (bitset_t set, Idx i)
+{
+  set[i / BITSET_WORD_BITS] &= ~ ((bitset_word_t) 1 << i % BITSET_WORD_BITS);
+}
+
+static inline bool
+bitset_contain (const bitset_t set, Idx i)
+{
+  return (set[i / BITSET_WORD_BITS] >> i % BITSET_WORD_BITS) & 1;
+}
+
+static inline void
+bitset_empty (bitset_t set)
+{
+  memset (set, '\0', sizeof (bitset_t));
+}
+
+static inline void
+bitset_set_all (bitset_t set)
+{
+  memset (set, -1, sizeof (bitset_word_t) * (SBC_MAX / BITSET_WORD_BITS));
+  if (SBC_MAX % BITSET_WORD_BITS != 0)
+    set[BITSET_WORDS - 1] =
+      ((bitset_word_t) 1 << SBC_MAX % BITSET_WORD_BITS) - 1;
+}
+
+static inline void
+bitset_copy (bitset_t dest, const bitset_t src)
+{
+  memcpy (dest, src, sizeof (bitset_t));
+}
+
+static inline void
+bitset_not (bitset_t set)
+{
+  int bitset_i;
+  for (bitset_i = 0; bitset_i < SBC_MAX / BITSET_WORD_BITS; ++bitset_i)
+    set[bitset_i] = ~set[bitset_i];
+  if (SBC_MAX % BITSET_WORD_BITS != 0)
+    set[BITSET_WORDS - 1] =
+      ((((bitset_word_t) 1 << SBC_MAX % BITSET_WORD_BITS) - 1)
+       & ~set[BITSET_WORDS - 1]);
+}
+
+static inline void
+bitset_merge (bitset_t dest, const bitset_t src)
+{
+  int bitset_i;
+  for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i)
+    dest[bitset_i] |= src[bitset_i];
+}
+
+static inline void
+bitset_mask (bitset_t dest, const bitset_t src)
+{
+  int bitset_i;
+  for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i)
+    dest[bitset_i] &= src[bitset_i];
+}
+
+#ifdef RE_ENABLE_I18N
+/* Functions for re_string.  */
+static int
+__attribute__ ((pure, unused))
+re_string_char_size_at (const re_string_t *pstr, Idx idx)
+{
+  int byte_idx;
+  if (pstr->mb_cur_max == 1)
+    return 1;
+  for (byte_idx = 1; idx + byte_idx < pstr->valid_len; ++byte_idx)
+    if (pstr->wcs[idx + byte_idx] != WEOF)
+      break;
+  return byte_idx;
+}
+
+static wint_t
+__attribute__ ((pure, unused))
+re_string_wchar_at (const re_string_t *pstr, Idx idx)
+{
+  if (pstr->mb_cur_max == 1)
+    return (wint_t) pstr->mbs[idx];
+  return (wint_t) pstr->wcs[idx];
+}
+
+# ifdef _LIBC
+#  include <locale/weight.h>
+# endif
+
+static int
+__attribute__ ((pure, unused))
+re_string_elem_size_at (const re_string_t *pstr, Idx idx)
+{
+# ifdef _LIBC
+  const unsigned char *p, *extra;
+  const int32_t *table, *indirect;
+  uint_fast32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
+
+  if (nrules != 0)
+    {
+      table = (const int32_t *) _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
+      extra = (const unsigned char *)
+	_NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAMB);
+      indirect = (const int32_t *) _NL_CURRENT (LC_COLLATE,
+						_NL_COLLATE_INDIRECTMB);
+      p = pstr->mbs + idx;
+      findidx (table, indirect, extra, &p, pstr->len - idx);
+      return p - pstr->mbs - idx;
+    }
+  else
+# endif /* _LIBC */
+    return 1;
+}
+#endif /* RE_ENABLE_I18N */
+
+#ifdef _LIBC
+# if __GNUC__ >= 7
+#  define FALLTHROUGH __attribute__ ((__fallthrough__))
+# else
+#  define FALLTHROUGH ((void) 0)
+# endif
+#else
+# include "attribute.h"
+#endif
+
+#endif /*  _REGEX_INTERNAL_H */
diff --git a/src/grep/lib/regexec.c b/src/grep/lib/regexec.c
new file mode 100644
index 0000000..5e4eb49
--- /dev/null
+++ b/src/grep/lib/regexec.c
@@ -0,0 +1,4264 @@
+/* Extended regular expression matching and search library.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+static reg_errcode_t match_ctx_init (re_match_context_t *cache, int eflags,
+				     Idx n);
+static void match_ctx_clean (re_match_context_t *mctx);
+static void match_ctx_free (re_match_context_t *cache);
+static reg_errcode_t match_ctx_add_entry (re_match_context_t *cache, Idx node,
+					  Idx str_idx, Idx from, Idx to);
+static Idx search_cur_bkref_entry (const re_match_context_t *mctx, Idx str_idx);
+static reg_errcode_t match_ctx_add_subtop (re_match_context_t *mctx, Idx node,
+					   Idx str_idx);
+static re_sub_match_last_t * match_ctx_add_sublast (re_sub_match_top_t *subtop,
+						    Idx node, Idx str_idx);
+static void sift_ctx_init (re_sift_context_t *sctx, re_dfastate_t **sifted_sts,
+			   re_dfastate_t **limited_sts, Idx last_node,
+			   Idx last_str_idx);
+static reg_errcode_t re_search_internal (const regex_t *preg,
+					 const char *string, Idx length,
+					 Idx start, Idx last_start, Idx stop,
+					 size_t nmatch, regmatch_t pmatch[],
+					 int eflags);
+static regoff_t re_search_2_stub (struct re_pattern_buffer *bufp,
+				  const char *string1, Idx length1,
+				  const char *string2, Idx length2,
+				  Idx start, regoff_t range,
+				  struct re_registers *regs,
+				  Idx stop, bool ret_len);
+static regoff_t re_search_stub (struct re_pattern_buffer *bufp,
+				const char *string, Idx length, Idx start,
+				regoff_t range, Idx stop,
+				struct re_registers *regs,
+				bool ret_len);
+static unsigned re_copy_regs (struct re_registers *regs, regmatch_t *pmatch,
+                              Idx nregs, int regs_allocated);
+static reg_errcode_t prune_impossible_nodes (re_match_context_t *mctx);
+static Idx check_matching (re_match_context_t *mctx, bool fl_longest_match,
+			   Idx *p_match_first);
+static Idx check_halt_state_context (const re_match_context_t *mctx,
+				     const re_dfastate_t *state, Idx idx);
+static void update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
+			 regmatch_t *prev_idx_match, Idx cur_node,
+			 Idx cur_idx, Idx nmatch);
+static reg_errcode_t push_fail_stack (struct re_fail_stack_t *fs,
+				      Idx str_idx, Idx dest_node, Idx nregs,
+				      regmatch_t *regs, regmatch_t *prevregs,
+				      re_node_set *eps_via_nodes);
+static reg_errcode_t set_regs (const regex_t *preg,
+			       const re_match_context_t *mctx,
+			       size_t nmatch, regmatch_t *pmatch,
+			       bool fl_backtrack);
+static reg_errcode_t free_fail_stack_return (struct re_fail_stack_t *fs);
+
+#ifdef RE_ENABLE_I18N
+static int sift_states_iter_mb (const re_match_context_t *mctx,
+				re_sift_context_t *sctx,
+				Idx node_idx, Idx str_idx, Idx max_str_idx);
+#endif /* RE_ENABLE_I18N */
+static reg_errcode_t sift_states_backward (const re_match_context_t *mctx,
+					   re_sift_context_t *sctx);
+static reg_errcode_t build_sifted_states (const re_match_context_t *mctx,
+					  re_sift_context_t *sctx, Idx str_idx,
+					  re_node_set *cur_dest);
+static reg_errcode_t update_cur_sifted_state (const re_match_context_t *mctx,
+					      re_sift_context_t *sctx,
+					      Idx str_idx,
+					      re_node_set *dest_nodes);
+static reg_errcode_t add_epsilon_src_nodes (const re_dfa_t *dfa,
+					    re_node_set *dest_nodes,
+					    const re_node_set *candidates);
+static bool check_dst_limits (const re_match_context_t *mctx,
+			      const re_node_set *limits,
+			      Idx dst_node, Idx dst_idx, Idx src_node,
+			      Idx src_idx);
+static int check_dst_limits_calc_pos_1 (const re_match_context_t *mctx,
+					int boundaries, Idx subexp_idx,
+					Idx from_node, Idx bkref_idx);
+static int check_dst_limits_calc_pos (const re_match_context_t *mctx,
+				      Idx limit, Idx subexp_idx,
+				      Idx node, Idx str_idx,
+				      Idx bkref_idx);
+static reg_errcode_t check_subexp_limits (const re_dfa_t *dfa,
+					  re_node_set *dest_nodes,
+					  const re_node_set *candidates,
+					  re_node_set *limits,
+					  struct re_backref_cache_entry *bkref_ents,
+					  Idx str_idx);
+static reg_errcode_t sift_states_bkref (const re_match_context_t *mctx,
+					re_sift_context_t *sctx,
+					Idx str_idx, const re_node_set *candidates);
+static reg_errcode_t merge_state_array (const re_dfa_t *dfa,
+					re_dfastate_t **dst,
+					re_dfastate_t **src, Idx num);
+static re_dfastate_t *find_recover_state (reg_errcode_t *err,
+					 re_match_context_t *mctx);
+static re_dfastate_t *transit_state (reg_errcode_t *err,
+				     re_match_context_t *mctx,
+				     re_dfastate_t *state);
+static re_dfastate_t *merge_state_with_log (reg_errcode_t *err,
+					    re_match_context_t *mctx,
+					    re_dfastate_t *next_state);
+static reg_errcode_t check_subexp_matching_top (re_match_context_t *mctx,
+						re_node_set *cur_nodes,
+						Idx str_idx);
+#if 0
+static re_dfastate_t *transit_state_sb (reg_errcode_t *err,
+					re_match_context_t *mctx,
+					re_dfastate_t *pstate);
+#endif
+#ifdef RE_ENABLE_I18N
+static reg_errcode_t transit_state_mb (re_match_context_t *mctx,
+				       re_dfastate_t *pstate);
+#endif /* RE_ENABLE_I18N */
+static reg_errcode_t transit_state_bkref (re_match_context_t *mctx,
+					  const re_node_set *nodes);
+static reg_errcode_t get_subexp (re_match_context_t *mctx,
+				 Idx bkref_node, Idx bkref_str_idx);
+static reg_errcode_t get_subexp_sub (re_match_context_t *mctx,
+				     const re_sub_match_top_t *sub_top,
+				     re_sub_match_last_t *sub_last,
+				     Idx bkref_node, Idx bkref_str);
+static Idx find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
+			     Idx subexp_idx, int type);
+static reg_errcode_t check_arrival (re_match_context_t *mctx,
+				    state_array_t *path, Idx top_node,
+				    Idx top_str, Idx last_node, Idx last_str,
+				    int type);
+static reg_errcode_t check_arrival_add_next_nodes (re_match_context_t *mctx,
+						   Idx str_idx,
+						   re_node_set *cur_nodes,
+						   re_node_set *next_nodes);
+static reg_errcode_t check_arrival_expand_ecl (const re_dfa_t *dfa,
+					       re_node_set *cur_nodes,
+					       Idx ex_subexp, int type);
+static reg_errcode_t check_arrival_expand_ecl_sub (const re_dfa_t *dfa,
+						   re_node_set *dst_nodes,
+						   Idx target, Idx ex_subexp,
+						   int type);
+static reg_errcode_t expand_bkref_cache (re_match_context_t *mctx,
+					 re_node_set *cur_nodes, Idx cur_str,
+					 Idx subexp_num, int type);
+static bool build_trtable (const re_dfa_t *dfa, re_dfastate_t *state);
+#ifdef RE_ENABLE_I18N
+static int check_node_accept_bytes (const re_dfa_t *dfa, Idx node_idx,
+				    const re_string_t *input, Idx idx);
+# ifdef _LIBC
+static unsigned int find_collation_sequence_value (const unsigned char *mbs,
+						   size_t name_len);
+# endif /* _LIBC */
+#endif /* RE_ENABLE_I18N */
+static Idx group_nodes_into_DFAstates (const re_dfa_t *dfa,
+				       const re_dfastate_t *state,
+				       re_node_set *states_node,
+				       bitset_t *states_ch);
+static bool check_node_accept (const re_match_context_t *mctx,
+			       const re_token_t *node, Idx idx);
+static reg_errcode_t extend_buffers (re_match_context_t *mctx, int min_len);
+
+/* Entry point for POSIX code.  */
+
+/* regexec searches for a given pattern, specified by PREG, in the
+   string STRING.
+
+   If NMATCH is zero or REG_NOSUB was set in the cflags argument to
+   'regcomp', we ignore PMATCH.  Otherwise, we assume PMATCH has at
+   least NMATCH elements, and we set them to the offsets of the
+   corresponding matched substrings.
+
+   EFLAGS specifies "execution flags" which affect matching: if
+   REG_NOTBOL is set, then ^ does not match at the beginning of the
+   string; if REG_NOTEOL is set, then $ does not match at the end.
+
+   Return 0 if a match is found, REG_NOMATCH if not, REG_BADPAT if
+   EFLAGS is invalid.  */
+
+int
+regexec (const regex_t *__restrict preg, const char *__restrict string,
+	 size_t nmatch, regmatch_t pmatch[], int eflags)
+{
+  reg_errcode_t err;
+  Idx start, length;
+  re_dfa_t *dfa = preg->buffer;
+
+  if (eflags & ~(REG_NOTBOL | REG_NOTEOL | REG_STARTEND))
+    return REG_BADPAT;
+
+  if (eflags & REG_STARTEND)
+    {
+      start = pmatch[0].rm_so;
+      length = pmatch[0].rm_eo;
+    }
+  else
+    {
+      start = 0;
+      length = strlen (string);
+    }
+
+  lock_lock (dfa->lock);
+  if (preg->no_sub)
+    err = re_search_internal (preg, string, length, start, length,
+			      length, 0, NULL, eflags);
+  else
+    err = re_search_internal (preg, string, length, start, length,
+			      length, nmatch, pmatch, eflags);
+  lock_unlock (dfa->lock);
+  return err != REG_NOERROR;
+}
+
+#ifdef _LIBC
+libc_hidden_def (__regexec)
+
+# include <shlib-compat.h>
+versioned_symbol (libc, __regexec, regexec, GLIBC_2_3_4);
+
+# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)
+__typeof__ (__regexec) __compat_regexec;
+
+int
+attribute_compat_text_section
+__compat_regexec (const regex_t *__restrict preg,
+		  const char *__restrict string, size_t nmatch,
+		  regmatch_t pmatch[], int eflags)
+{
+  return regexec (preg, string, nmatch, pmatch,
+		  eflags & (REG_NOTBOL | REG_NOTEOL));
+}
+compat_symbol (libc, __compat_regexec, regexec, GLIBC_2_0);
+# endif
+#endif
+
+/* Entry points for GNU code.  */
+
+/* re_match, re_search, re_match_2, re_search_2
+
+   The former two functions operate on STRING with length LENGTH,
+   while the later two operate on concatenation of STRING1 and STRING2
+   with lengths LENGTH1 and LENGTH2, respectively.
+
+   re_match() matches the compiled pattern in BUFP against the string,
+   starting at index START.
+
+   re_search() first tries matching at index START, then it tries to match
+   starting from index START + 1, and so on.  The last start position tried
+   is START + RANGE.  (Thus RANGE = 0 forces re_search to operate the same
+   way as re_match().)
+
+   The parameter STOP of re_{match,search}_2 specifies that no match exceeding
+   the first STOP characters of the concatenation of the strings should be
+   concerned.
+
+   If REGS is not NULL, and BUFP->no_sub is not set, the offsets of the match
+   and all groups is stored in REGS.  (For the "_2" variants, the offsets are
+   computed relative to the concatenation, not relative to the individual
+   strings.)
+
+   On success, re_match* functions return the length of the match, re_search*
+   return the position of the start of the match.  They return -1 on
+   match failure, -2 on error.  */
+
+regoff_t
+re_match (struct re_pattern_buffer *bufp, const char *string, Idx length,
+	  Idx start, struct re_registers *regs)
+{
+  return re_search_stub (bufp, string, length, start, 0, length, regs, true);
+}
+#ifdef _LIBC
+weak_alias (__re_match, re_match)
+#endif
+
+regoff_t
+re_search (struct re_pattern_buffer *bufp, const char *string, Idx length,
+	   Idx start, regoff_t range, struct re_registers *regs)
+{
+  return re_search_stub (bufp, string, length, start, range, length, regs,
+			 false);
+}
+#ifdef _LIBC
+weak_alias (__re_search, re_search)
+#endif
+
+regoff_t
+re_match_2 (struct re_pattern_buffer *bufp, const char *string1, Idx length1,
+	    const char *string2, Idx length2, Idx start,
+	    struct re_registers *regs, Idx stop)
+{
+  return re_search_2_stub (bufp, string1, length1, string2, length2,
+			   start, 0, regs, stop, true);
+}
+#ifdef _LIBC
+weak_alias (__re_match_2, re_match_2)
+#endif
+
+regoff_t
+re_search_2 (struct re_pattern_buffer *bufp, const char *string1, Idx length1,
+	     const char *string2, Idx length2, Idx start, regoff_t range,
+	     struct re_registers *regs, Idx stop)
+{
+  return re_search_2_stub (bufp, string1, length1, string2, length2,
+			   start, range, regs, stop, false);
+}
+#ifdef _LIBC
+weak_alias (__re_search_2, re_search_2)
+#endif
+
+static regoff_t
+re_search_2_stub (struct re_pattern_buffer *bufp, const char *string1,
+		  Idx length1, const char *string2, Idx length2, Idx start,
+		  regoff_t range, struct re_registers *regs,
+		  Idx stop, bool ret_len)
+{
+  const char *str;
+  regoff_t rval;
+  Idx len;
+  char *s = NULL;
+
+  if (__glibc_unlikely ((length1 < 0 || length2 < 0 || stop < 0
+			 || INT_ADD_WRAPV (length1, length2, &len))))
+    return -2;
+
+  /* Concatenate the strings.  */
+  if (length2 > 0)
+    if (length1 > 0)
+      {
+	s = re_malloc (char, len);
+
+	if (__glibc_unlikely (s == NULL))
+	  return -2;
+#ifdef _LIBC
+	memcpy (__mempcpy (s, string1, length1), string2, length2);
+#else
+	memcpy (s, string1, length1);
+	memcpy (s + length1, string2, length2);
+#endif
+	str = s;
+      }
+    else
+      str = string2;
+  else
+    str = string1;
+
+  rval = re_search_stub (bufp, str, len, start, range, stop, regs,
+			 ret_len);
+  re_free (s);
+  return rval;
+}
+
+/* The parameters have the same meaning as those of re_search.
+   Additional parameters:
+   If RET_LEN is true the length of the match is returned (re_match style);
+   otherwise the position of the match is returned.  */
+
+static regoff_t
+re_search_stub (struct re_pattern_buffer *bufp, const char *string, Idx length,
+		Idx start, regoff_t range, Idx stop, struct re_registers *regs,
+		bool ret_len)
+{
+  reg_errcode_t result;
+  regmatch_t *pmatch;
+  Idx nregs;
+  regoff_t rval;
+  int eflags = 0;
+  re_dfa_t *dfa = bufp->buffer;
+  Idx last_start = start + range;
+
+  /* Check for out-of-range.  */
+  if (__glibc_unlikely (start < 0 || start > length))
+    return -1;
+  if (__glibc_unlikely (length < last_start
+			|| (0 <= range && last_start < start)))
+    last_start = length;
+  else if (__glibc_unlikely (last_start < 0
+			     || (range < 0 && start <= last_start)))
+    last_start = 0;
+
+  lock_lock (dfa->lock);
+
+  eflags |= (bufp->not_bol) ? REG_NOTBOL : 0;
+  eflags |= (bufp->not_eol) ? REG_NOTEOL : 0;
+
+  /* Compile fastmap if we haven't yet.  */
+  if (start < last_start && bufp->fastmap != NULL && !bufp->fastmap_accurate)
+    re_compile_fastmap (bufp);
+
+  if (__glibc_unlikely (bufp->no_sub))
+    regs = NULL;
+
+  /* We need at least 1 register.  */
+  if (regs == NULL)
+    nregs = 1;
+  else if (__glibc_unlikely (bufp->regs_allocated == REGS_FIXED
+			     && regs->num_regs <= bufp->re_nsub))
+    {
+      nregs = regs->num_regs;
+      if (__glibc_unlikely (nregs < 1))
+	{
+	  /* Nothing can be copied to regs.  */
+	  regs = NULL;
+	  nregs = 1;
+	}
+    }
+  else
+    nregs = bufp->re_nsub + 1;
+  pmatch = re_malloc (regmatch_t, nregs);
+  if (__glibc_unlikely (pmatch == NULL))
+    {
+      rval = -2;
+      goto out;
+    }
+
+  result = re_search_internal (bufp, string, length, start, last_start, stop,
+			       nregs, pmatch, eflags);
+
+  rval = 0;
+
+  /* I hope we needn't fill their regs with -1's when no match was found.  */
+  if (result != REG_NOERROR)
+    rval = result == REG_NOMATCH ? -1 : -2;
+  else if (regs != NULL)
+    {
+      /* If caller wants register contents data back, copy them.  */
+      bufp->regs_allocated = re_copy_regs (regs, pmatch, nregs,
+					   bufp->regs_allocated);
+      if (__glibc_unlikely (bufp->regs_allocated == REGS_UNALLOCATED))
+	rval = -2;
+    }
+
+  if (__glibc_likely (rval == 0))
+    {
+      if (ret_len)
+	{
+	  DEBUG_ASSERT (pmatch[0].rm_so == start);
+	  rval = pmatch[0].rm_eo - start;
+	}
+      else
+	rval = pmatch[0].rm_so;
+    }
+  re_free (pmatch);
+ out:
+  lock_unlock (dfa->lock);
+  return rval;
+}
+
+static unsigned
+re_copy_regs (struct re_registers *regs, regmatch_t *pmatch, Idx nregs,
+	      int regs_allocated)
+{
+  int rval = REGS_REALLOCATE;
+  Idx i;
+  Idx need_regs = nregs + 1;
+  /* We need one extra element beyond 'num_regs' for the '-1' marker GNU code
+     uses.  */
+
+  /* Have the register data arrays been allocated?  */
+  if (regs_allocated == REGS_UNALLOCATED)
+    { /* No.  So allocate them with malloc.  */
+      regs->start = re_malloc (regoff_t, need_regs);
+      if (__glibc_unlikely (regs->start == NULL))
+	return REGS_UNALLOCATED;
+      regs->end = re_malloc (regoff_t, need_regs);
+      if (__glibc_unlikely (regs->end == NULL))
+	{
+	  re_free (regs->start);
+	  return REGS_UNALLOCATED;
+	}
+      regs->num_regs = need_regs;
+    }
+  else if (regs_allocated == REGS_REALLOCATE)
+    { /* Yes.  If we need more elements than were already
+	 allocated, reallocate them.  If we need fewer, just
+	 leave it alone.  */
+      if (__glibc_unlikely (need_regs > regs->num_regs))
+	{
+	  regoff_t *new_start = re_realloc (regs->start, regoff_t, need_regs);
+	  regoff_t *new_end;
+	  if (__glibc_unlikely (new_start == NULL))
+	    return REGS_UNALLOCATED;
+	  new_end = re_realloc (regs->end, regoff_t, need_regs);
+	  if (__glibc_unlikely (new_end == NULL))
+	    {
+	      re_free (new_start);
+	      return REGS_UNALLOCATED;
+	    }
+	  regs->start = new_start;
+	  regs->end = new_end;
+	  regs->num_regs = need_regs;
+	}
+    }
+  else
+    {
+      DEBUG_ASSERT (regs_allocated == REGS_FIXED);
+      /* This function may not be called with REGS_FIXED and nregs too big.  */
+      DEBUG_ASSERT (nregs <= regs->num_regs);
+      rval = REGS_FIXED;
+    }
+
+  /* Copy the regs.  */
+  for (i = 0; i < nregs; ++i)
+    {
+      regs->start[i] = pmatch[i].rm_so;
+      regs->end[i] = pmatch[i].rm_eo;
+    }
+  for ( ; i < regs->num_regs; ++i)
+    regs->start[i] = regs->end[i] = -1;
+
+  return rval;
+}
+
+/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
+   ENDS.  Subsequent matches using PATTERN_BUFFER and REGS will use
+   this memory for recording register information.  STARTS and ENDS
+   must be allocated using the malloc library routine, and must each
+   be at least NUM_REGS * sizeof (regoff_t) bytes long.
+
+   If NUM_REGS == 0, then subsequent matches should allocate their own
+   register data.
+
+   Unless this function is called, the first search or match using
+   PATTERN_BUFFER will allocate its own register data, without
+   freeing the old data.  */
+
+void
+re_set_registers (struct re_pattern_buffer *bufp, struct re_registers *regs,
+		  __re_size_t num_regs, regoff_t *starts, regoff_t *ends)
+{
+  if (num_regs)
+    {
+      bufp->regs_allocated = REGS_REALLOCATE;
+      regs->num_regs = num_regs;
+      regs->start = starts;
+      regs->end = ends;
+    }
+  else
+    {
+      bufp->regs_allocated = REGS_UNALLOCATED;
+      regs->num_regs = 0;
+      regs->start = regs->end = NULL;
+    }
+}
+#ifdef _LIBC
+weak_alias (__re_set_registers, re_set_registers)
+#endif
+
+/* Entry points compatible with 4.2 BSD regex library.  We don't define
+   them unless specifically requested.  */
+
+#if defined _REGEX_RE_COMP || defined _LIBC
+int
+# ifdef _LIBC
+weak_function
+# endif
+re_exec (const char *s)
+{
+  return 0 == regexec (&re_comp_buf, s, 0, NULL, 0);
+}
+#endif /* _REGEX_RE_COMP */
+
+/* Internal entry point.  */
+
+/* Searches for a compiled pattern PREG in the string STRING, whose
+   length is LENGTH.  NMATCH, PMATCH, and EFLAGS have the same
+   meaning as with regexec.  LAST_START is START + RANGE, where
+   START and RANGE have the same meaning as with re_search.
+   Return REG_NOERROR if we find a match, and REG_NOMATCH if not,
+   otherwise return the error code.
+   Note: We assume front end functions already check ranges.
+   (0 <= LAST_START && LAST_START <= LENGTH)  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+re_search_internal (const regex_t *preg, const char *string, Idx length,
+		    Idx start, Idx last_start, Idx stop, size_t nmatch,
+		    regmatch_t pmatch[], int eflags)
+{
+  reg_errcode_t err;
+  const re_dfa_t *dfa = preg->buffer;
+  Idx left_lim, right_lim;
+  int incr;
+  bool fl_longest_match;
+  int match_kind;
+  Idx match_first;
+  Idx match_last = -1;
+  Idx extra_nmatch;
+  bool sb;
+  int ch;
+  re_match_context_t mctx = { .dfa = dfa };
+  char *fastmap = ((preg->fastmap != NULL && preg->fastmap_accurate
+		    && start != last_start && !preg->can_be_null)
+		   ? preg->fastmap : NULL);
+  RE_TRANSLATE_TYPE t = preg->translate;
+
+  extra_nmatch = (nmatch > preg->re_nsub) ? nmatch - (preg->re_nsub + 1) : 0;
+  nmatch -= extra_nmatch;
+
+  /* Check if the DFA haven't been compiled.  */
+  if (__glibc_unlikely (preg->used == 0 || dfa->init_state == NULL
+			|| dfa->init_state_word == NULL
+			|| dfa->init_state_nl == NULL
+			|| dfa->init_state_begbuf == NULL))
+    return REG_NOMATCH;
+
+  /* We assume front-end functions already check them.  */
+  DEBUG_ASSERT (0 <= last_start && last_start <= length);
+
+  /* If initial states with non-begbuf contexts have no elements,
+     the regex must be anchored.  If preg->newline_anchor is set,
+     we'll never use init_state_nl, so do not check it.  */
+  if (dfa->init_state->nodes.nelem == 0
+      && dfa->init_state_word->nodes.nelem == 0
+      && (dfa->init_state_nl->nodes.nelem == 0
+	  || !preg->newline_anchor))
+    {
+      if (start != 0 && last_start != 0)
+        return REG_NOMATCH;
+      start = last_start = 0;
+    }
+
+  /* We must check the longest matching, if nmatch > 0.  */
+  fl_longest_match = (nmatch != 0 || dfa->nbackref);
+
+  err = re_string_allocate (&mctx.input, string, length, dfa->nodes_len + 1,
+			    preg->translate, (preg->syntax & RE_ICASE) != 0,
+			    dfa);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    goto free_return;
+  mctx.input.stop = stop;
+  mctx.input.raw_stop = stop;
+  mctx.input.newline_anchor = preg->newline_anchor;
+
+  err = match_ctx_init (&mctx, eflags, dfa->nbackref * 2);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    goto free_return;
+
+  /* We will log all the DFA states through which the dfa pass,
+     if nmatch > 1, or this dfa has "multibyte node", which is a
+     back-reference or a node which can accept multibyte character or
+     multi character collating element.  */
+  if (nmatch > 1 || dfa->has_mb_node)
+    {
+      /* Avoid overflow.  */
+      if (__glibc_unlikely ((MIN (IDX_MAX, SIZE_MAX / sizeof (re_dfastate_t *))
+			     <= mctx.input.bufs_len)))
+	{
+	  err = REG_ESPACE;
+	  goto free_return;
+	}
+
+      mctx.state_log = re_malloc (re_dfastate_t *, mctx.input.bufs_len + 1);
+      if (__glibc_unlikely (mctx.state_log == NULL))
+	{
+	  err = REG_ESPACE;
+	  goto free_return;
+	}
+    }
+
+  match_first = start;
+  mctx.input.tip_context = (eflags & REG_NOTBOL) ? CONTEXT_BEGBUF
+			   : CONTEXT_NEWLINE | CONTEXT_BEGBUF;
+
+  /* Check incrementally whether the input string matches.  */
+  incr = (last_start < start) ? -1 : 1;
+  left_lim = (last_start < start) ? last_start : start;
+  right_lim = (last_start < start) ? start : last_start;
+  sb = dfa->mb_cur_max == 1;
+  match_kind =
+    (fastmap
+     ? ((sb || !(preg->syntax & RE_ICASE || t) ? 4 : 0)
+	| (start <= last_start ? 2 : 0)
+	| (t != NULL ? 1 : 0))
+     : 8);
+
+  for (;; match_first += incr)
+    {
+      err = REG_NOMATCH;
+      if (match_first < left_lim || right_lim < match_first)
+	goto free_return;
+
+      /* Advance as rapidly as possible through the string, until we
+	 find a plausible place to start matching.  This may be done
+	 with varying efficiency, so there are various possibilities:
+	 only the most common of them are specialized, in order to
+	 save on code size.  We use a switch statement for speed.  */
+      switch (match_kind)
+	{
+	case 8:
+	  /* No fastmap.  */
+	  break;
+
+	case 7:
+	  /* Fastmap with single-byte translation, match forward.  */
+	  while (__glibc_likely (match_first < right_lim)
+		 && !fastmap[t[(unsigned char) string[match_first]]])
+	    ++match_first;
+	  goto forward_match_found_start_or_reached_end;
+
+	case 6:
+	  /* Fastmap without translation, match forward.  */
+	  while (__glibc_likely (match_first < right_lim)
+		 && !fastmap[(unsigned char) string[match_first]])
+	    ++match_first;
+
+	forward_match_found_start_or_reached_end:
+	  if (__glibc_unlikely (match_first == right_lim))
+	    {
+	      ch = match_first >= length
+		       ? 0 : (unsigned char) string[match_first];
+	      if (!fastmap[t ? t[ch] : ch])
+		goto free_return;
+	    }
+	  break;
+
+	case 4:
+	case 5:
+	  /* Fastmap without multi-byte translation, match backwards.  */
+	  while (match_first >= left_lim)
+	    {
+	      ch = match_first >= length
+		       ? 0 : (unsigned char) string[match_first];
+	      if (fastmap[t ? t[ch] : ch])
+		break;
+	      --match_first;
+	    }
+	  if (match_first < left_lim)
+	    goto free_return;
+	  break;
+
+	default:
+	  /* In this case, we can't determine easily the current byte,
+	     since it might be a component byte of a multibyte
+	     character.  Then we use the constructed buffer instead.  */
+	  for (;;)
+	    {
+	      /* If MATCH_FIRST is out of the valid range, reconstruct the
+		 buffers.  */
+	      __re_size_t offset = match_first - mctx.input.raw_mbs_idx;
+	      if (__glibc_unlikely (offset
+				    >= (__re_size_t) mctx.input.valid_raw_len))
+		{
+		  err = re_string_reconstruct (&mctx.input, match_first,
+					       eflags);
+		  if (__glibc_unlikely (err != REG_NOERROR))
+		    goto free_return;
+
+		  offset = match_first - mctx.input.raw_mbs_idx;
+		}
+	      /* If MATCH_FIRST is out of the buffer, leave it as '\0'.
+		 Note that MATCH_FIRST must not be smaller than 0.  */
+	      ch = (match_first >= length
+		    ? 0 : re_string_byte_at (&mctx.input, offset));
+	      if (fastmap[ch])
+		break;
+	      match_first += incr;
+	      if (match_first < left_lim || match_first > right_lim)
+		{
+		  err = REG_NOMATCH;
+		  goto free_return;
+		}
+	    }
+	  break;
+	}
+
+      /* Reconstruct the buffers so that the matcher can assume that
+	 the matching starts from the beginning of the buffer.  */
+      err = re_string_reconstruct (&mctx.input, match_first, eflags);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	goto free_return;
+
+#ifdef RE_ENABLE_I18N
+     /* Don't consider this char as a possible match start if it part,
+	yet isn't the head, of a multibyte character.  */
+      if (!sb && !re_string_first_byte (&mctx.input, 0))
+	continue;
+#endif
+
+      /* It seems to be appropriate one, then use the matcher.  */
+      /* We assume that the matching starts from 0.  */
+      mctx.state_log_top = mctx.nbkref_ents = mctx.max_mb_elem_len = 0;
+      match_last = check_matching (&mctx, fl_longest_match,
+				   start <= last_start ? &match_first : NULL);
+      if (match_last != -1)
+	{
+	  if (__glibc_unlikely (match_last == -2))
+	    {
+	      err = REG_ESPACE;
+	      goto free_return;
+	    }
+	  else
+	    {
+	      mctx.match_last = match_last;
+	      if ((!preg->no_sub && nmatch > 1) || dfa->nbackref)
+		{
+		  re_dfastate_t *pstate = mctx.state_log[match_last];
+		  mctx.last_node = check_halt_state_context (&mctx, pstate,
+							     match_last);
+		}
+	      if ((!preg->no_sub && nmatch > 1 && dfa->has_plural_match)
+		  || dfa->nbackref)
+		{
+		  err = prune_impossible_nodes (&mctx);
+		  if (err == REG_NOERROR)
+		    break;
+		  if (__glibc_unlikely (err != REG_NOMATCH))
+		    goto free_return;
+		  match_last = -1;
+		}
+	      else
+		break; /* We found a match.  */
+	    }
+	}
+
+      match_ctx_clean (&mctx);
+    }
+
+  DEBUG_ASSERT (match_last != -1);
+  DEBUG_ASSERT (err == REG_NOERROR);
+
+  /* Set pmatch[] if we need.  */
+  if (nmatch > 0)
+    {
+      Idx reg_idx;
+
+      /* Initialize registers.  */
+      for (reg_idx = 1; reg_idx < nmatch; ++reg_idx)
+	pmatch[reg_idx].rm_so = pmatch[reg_idx].rm_eo = -1;
+
+      /* Set the points where matching start/end.  */
+      pmatch[0].rm_so = 0;
+      pmatch[0].rm_eo = mctx.match_last;
+      /* FIXME: This function should fail if mctx.match_last exceeds
+	 the maximum possible regoff_t value.  We need a new error
+	 code REG_OVERFLOW.  */
+
+      if (!preg->no_sub && nmatch > 1)
+	{
+	  err = set_regs (preg, &mctx, nmatch, pmatch,
+			  dfa->has_plural_match && dfa->nbackref > 0);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    goto free_return;
+	}
+
+      /* At last, add the offset to each register, since we slid
+	 the buffers so that we could assume that the matching starts
+	 from 0.  */
+      for (reg_idx = 0; reg_idx < nmatch; ++reg_idx)
+	if (pmatch[reg_idx].rm_so != -1)
+	  {
+#ifdef RE_ENABLE_I18N
+	    if (__glibc_unlikely (mctx.input.offsets_needed != 0))
+	      {
+		pmatch[reg_idx].rm_so =
+		  (pmatch[reg_idx].rm_so == mctx.input.valid_len
+		   ? mctx.input.valid_raw_len
+		   : mctx.input.offsets[pmatch[reg_idx].rm_so]);
+		pmatch[reg_idx].rm_eo =
+		  (pmatch[reg_idx].rm_eo == mctx.input.valid_len
+		   ? mctx.input.valid_raw_len
+		   : mctx.input.offsets[pmatch[reg_idx].rm_eo]);
+	      }
+#else
+	    DEBUG_ASSERT (mctx.input.offsets_needed == 0);
+#endif
+	    pmatch[reg_idx].rm_so += match_first;
+	    pmatch[reg_idx].rm_eo += match_first;
+	  }
+      for (reg_idx = 0; reg_idx < extra_nmatch; ++reg_idx)
+	{
+	  pmatch[nmatch + reg_idx].rm_so = -1;
+	  pmatch[nmatch + reg_idx].rm_eo = -1;
+	}
+
+      if (dfa->subexp_map)
+	for (reg_idx = 0; reg_idx + 1 < nmatch; reg_idx++)
+	  if (dfa->subexp_map[reg_idx] != reg_idx)
+	    {
+	      pmatch[reg_idx + 1].rm_so
+		= pmatch[dfa->subexp_map[reg_idx] + 1].rm_so;
+	      pmatch[reg_idx + 1].rm_eo
+		= pmatch[dfa->subexp_map[reg_idx] + 1].rm_eo;
+	    }
+    }
+
+ free_return:
+  re_free (mctx.state_log);
+  if (dfa->nbackref)
+    match_ctx_free (&mctx);
+  re_string_destruct (&mctx.input);
+  return err;
+}
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+prune_impossible_nodes (re_match_context_t *mctx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  Idx halt_node, match_last;
+  reg_errcode_t ret;
+  re_dfastate_t **sifted_states;
+  re_dfastate_t **lim_states = NULL;
+  re_sift_context_t sctx;
+  DEBUG_ASSERT (mctx->state_log != NULL);
+  match_last = mctx->match_last;
+  halt_node = mctx->last_node;
+
+  /* Avoid overflow.  */
+  if (__glibc_unlikely (MIN (IDX_MAX, SIZE_MAX / sizeof (re_dfastate_t *))
+			<= match_last))
+    return REG_ESPACE;
+
+  sifted_states = re_malloc (re_dfastate_t *, match_last + 1);
+  if (__glibc_unlikely (sifted_states == NULL))
+    {
+      ret = REG_ESPACE;
+      goto free_return;
+    }
+  if (dfa->nbackref)
+    {
+      lim_states = re_malloc (re_dfastate_t *, match_last + 1);
+      if (__glibc_unlikely (lim_states == NULL))
+	{
+	  ret = REG_ESPACE;
+	  goto free_return;
+	}
+      while (1)
+	{
+	  memset (lim_states, '\0',
+		  sizeof (re_dfastate_t *) * (match_last + 1));
+	  sift_ctx_init (&sctx, sifted_states, lim_states, halt_node,
+			 match_last);
+	  ret = sift_states_backward (mctx, &sctx);
+	  re_node_set_free (&sctx.limits);
+	  if (__glibc_unlikely (ret != REG_NOERROR))
+	      goto free_return;
+	  if (sifted_states[0] != NULL || lim_states[0] != NULL)
+	    break;
+	  do
+	    {
+	      --match_last;
+	      if (match_last < 0)
+		{
+		  ret = REG_NOMATCH;
+		  goto free_return;
+		}
+	    } while (mctx->state_log[match_last] == NULL
+		     || !mctx->state_log[match_last]->halt);
+	  halt_node = check_halt_state_context (mctx,
+						mctx->state_log[match_last],
+						match_last);
+	}
+      ret = merge_state_array (dfa, sifted_states, lim_states,
+			       match_last + 1);
+      re_free (lim_states);
+      lim_states = NULL;
+      if (__glibc_unlikely (ret != REG_NOERROR))
+	goto free_return;
+    }
+  else
+    {
+      sift_ctx_init (&sctx, sifted_states, lim_states, halt_node, match_last);
+      ret = sift_states_backward (mctx, &sctx);
+      re_node_set_free (&sctx.limits);
+      if (__glibc_unlikely (ret != REG_NOERROR))
+	goto free_return;
+      if (sifted_states[0] == NULL)
+	{
+	  ret = REG_NOMATCH;
+	  goto free_return;
+	}
+    }
+  re_free (mctx->state_log);
+  mctx->state_log = sifted_states;
+  sifted_states = NULL;
+  mctx->last_node = halt_node;
+  mctx->match_last = match_last;
+  ret = REG_NOERROR;
+ free_return:
+  re_free (sifted_states);
+  re_free (lim_states);
+  return ret;
+}
+
+/* Acquire an initial state and return it.
+   We must select appropriate initial state depending on the context,
+   since initial states may have constraints like "\<", "^", etc..  */
+
+static inline re_dfastate_t *
+__attribute__ ((always_inline))
+acquire_init_state_context (reg_errcode_t *err, const re_match_context_t *mctx,
+			    Idx idx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  if (dfa->init_state->has_constraint)
+    {
+      unsigned int context;
+      context = re_string_context_at (&mctx->input, idx - 1, mctx->eflags);
+      if (IS_WORD_CONTEXT (context))
+	return dfa->init_state_word;
+      else if (IS_ORDINARY_CONTEXT (context))
+	return dfa->init_state;
+      else if (IS_BEGBUF_CONTEXT (context) && IS_NEWLINE_CONTEXT (context))
+	return dfa->init_state_begbuf;
+      else if (IS_NEWLINE_CONTEXT (context))
+	return dfa->init_state_nl;
+      else if (IS_BEGBUF_CONTEXT (context))
+	{
+	  /* It is relatively rare case, then calculate on demand.  */
+	  return re_acquire_state_context (err, dfa,
+					   dfa->init_state->entrance_nodes,
+					   context);
+	}
+      else
+	/* Must not happen?  */
+	return dfa->init_state;
+    }
+  else
+    return dfa->init_state;
+}
+
+/* Check whether the regular expression match input string INPUT or not,
+   and return the index where the matching end.  Return -1 if
+   there is no match, and return -2 in case of an error.
+   FL_LONGEST_MATCH means we want the POSIX longest matching.
+   If P_MATCH_FIRST is not NULL, and the match fails, it is set to the
+   next place where we may want to try matching.
+   Note that the matcher assumes that the matching starts from the current
+   index of the buffer.  */
+
+static Idx
+__attribute_warn_unused_result__
+check_matching (re_match_context_t *mctx, bool fl_longest_match,
+		Idx *p_match_first)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err;
+  Idx match = 0;
+  Idx match_last = -1;
+  Idx cur_str_idx = re_string_cur_idx (&mctx->input);
+  re_dfastate_t *cur_state;
+  bool at_init_state = p_match_first != NULL;
+  Idx next_start_idx = cur_str_idx;
+
+  err = REG_NOERROR;
+  cur_state = acquire_init_state_context (&err, mctx, cur_str_idx);
+  /* An initial state must not be NULL (invalid).  */
+  if (__glibc_unlikely (cur_state == NULL))
+    {
+      DEBUG_ASSERT (err == REG_ESPACE);
+      return -2;
+    }
+
+  if (mctx->state_log != NULL)
+    {
+      mctx->state_log[cur_str_idx] = cur_state;
+
+      /* Check OP_OPEN_SUBEXP in the initial state in case that we use them
+	 later.  E.g. Processing back references.  */
+      if (__glibc_unlikely (dfa->nbackref))
+	{
+	  at_init_state = false;
+	  err = check_subexp_matching_top (mctx, &cur_state->nodes, 0);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return err;
+
+	  if (cur_state->has_backref)
+	    {
+	      err = transit_state_bkref (mctx, &cur_state->nodes);
+	      if (__glibc_unlikely (err != REG_NOERROR))
+		return err;
+	    }
+	}
+    }
+
+  /* If the RE accepts NULL string.  */
+  if (__glibc_unlikely (cur_state->halt))
+    {
+      if (!cur_state->has_constraint
+	  || check_halt_state_context (mctx, cur_state, cur_str_idx))
+	{
+	  if (!fl_longest_match)
+	    return cur_str_idx;
+	  else
+	    {
+	      match_last = cur_str_idx;
+	      match = 1;
+	    }
+	}
+    }
+
+  while (!re_string_eoi (&mctx->input))
+    {
+      re_dfastate_t *old_state = cur_state;
+      Idx next_char_idx = re_string_cur_idx (&mctx->input) + 1;
+
+      if ((__glibc_unlikely (next_char_idx >= mctx->input.bufs_len)
+	   && mctx->input.bufs_len < mctx->input.len)
+	  || (__glibc_unlikely (next_char_idx >= mctx->input.valid_len)
+	      && mctx->input.valid_len < mctx->input.len))
+	{
+	  err = extend_buffers (mctx, next_char_idx + 1);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    {
+	      DEBUG_ASSERT (err == REG_ESPACE);
+	      return -2;
+	    }
+	}
+
+      cur_state = transit_state (&err, mctx, cur_state);
+      if (mctx->state_log != NULL)
+	cur_state = merge_state_with_log (&err, mctx, cur_state);
+
+      if (cur_state == NULL)
+	{
+	  /* Reached the invalid state or an error.  Try to recover a valid
+	     state using the state log, if available and if we have not
+	     already found a valid (even if not the longest) match.  */
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return -2;
+
+	  if (mctx->state_log == NULL
+	      || (match && !fl_longest_match)
+	      || (cur_state = find_recover_state (&err, mctx)) == NULL)
+	    break;
+	}
+
+      if (__glibc_unlikely (at_init_state))
+	{
+	  if (old_state == cur_state)
+	    next_start_idx = next_char_idx;
+	  else
+	    at_init_state = false;
+	}
+
+      if (cur_state->halt)
+	{
+	  /* Reached a halt state.
+	     Check the halt state can satisfy the current context.  */
+	  if (!cur_state->has_constraint
+	      || check_halt_state_context (mctx, cur_state,
+					   re_string_cur_idx (&mctx->input)))
+	    {
+	      /* We found an appropriate halt state.  */
+	      match_last = re_string_cur_idx (&mctx->input);
+	      match = 1;
+
+	      /* We found a match, do not modify match_first below.  */
+	      p_match_first = NULL;
+	      if (!fl_longest_match)
+		break;
+	    }
+	}
+    }
+
+  if (p_match_first)
+    *p_match_first += next_start_idx;
+
+  return match_last;
+}
+
+/* Check NODE match the current context.  */
+
+static bool
+check_halt_node_context (const re_dfa_t *dfa, Idx node, unsigned int context)
+{
+  re_token_type_t type = dfa->nodes[node].type;
+  unsigned int constraint = dfa->nodes[node].constraint;
+  if (type != END_OF_RE)
+    return false;
+  if (!constraint)
+    return true;
+  if (NOT_SATISFY_NEXT_CONSTRAINT (constraint, context))
+    return false;
+  return true;
+}
+
+/* Check the halt state STATE match the current context.
+   Return 0 if not match, if the node, STATE has, is a halt node and
+   match the context, return the node.  */
+
+static Idx
+check_halt_state_context (const re_match_context_t *mctx,
+			  const re_dfastate_t *state, Idx idx)
+{
+  Idx i;
+  unsigned int context;
+  DEBUG_ASSERT (state->halt);
+  context = re_string_context_at (&mctx->input, idx, mctx->eflags);
+  for (i = 0; i < state->nodes.nelem; ++i)
+    if (check_halt_node_context (mctx->dfa, state->nodes.elems[i], context))
+      return state->nodes.elems[i];
+  return 0;
+}
+
+/* Compute the next node to which "NFA" transit from NODE("NFA" is a NFA
+   corresponding to the DFA).
+   Return the destination node, and update EPS_VIA_NODES;
+   return -1 on match failure, -2 on error.  */
+
+static Idx
+proceed_next_node (const re_match_context_t *mctx, Idx nregs, regmatch_t *regs,
+		   regmatch_t *prevregs,
+		   Idx *pidx, Idx node, re_node_set *eps_via_nodes,
+		   struct re_fail_stack_t *fs)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  if (IS_EPSILON_NODE (dfa->nodes[node].type))
+    {
+      re_node_set *cur_nodes = &mctx->state_log[*pidx]->nodes;
+      re_node_set *edests = &dfa->edests[node];
+
+      if (! re_node_set_contains (eps_via_nodes, node))
+        {
+          bool ok = re_node_set_insert (eps_via_nodes, node);
+          if (__glibc_unlikely (! ok))
+            return -2;
+        }
+
+      /* Pick a valid destination, or return -1 if none is found.  */
+      Idx dest_node = -1;
+      for (Idx i = 0; i < edests->nelem; i++)
+	{
+	  Idx candidate = edests->elems[i];
+	  if (!re_node_set_contains (cur_nodes, candidate))
+	    continue;
+          if (dest_node == -1)
+	    dest_node = candidate;
+
+	  else
+	    {
+	      /* In order to avoid infinite loop like "(a*)*", return the second
+		 epsilon-transition if the first was already considered.  */
+	      if (re_node_set_contains (eps_via_nodes, dest_node))
+		return candidate;
+
+	      /* Otherwise, push the second epsilon-transition on the fail stack.  */
+	      else if (fs != NULL
+		       && push_fail_stack (fs, *pidx, candidate, nregs, regs,
+					   prevregs, eps_via_nodes))
+		return -2;
+
+	      /* We know we are going to exit.  */
+	      break;
+	    }
+	}
+      return dest_node;
+    }
+  else
+    {
+      Idx naccepted = 0;
+      re_token_type_t type = dfa->nodes[node].type;
+
+#ifdef RE_ENABLE_I18N
+      if (dfa->nodes[node].accept_mb)
+	naccepted = check_node_accept_bytes (dfa, node, &mctx->input, *pidx);
+      else
+#endif /* RE_ENABLE_I18N */
+      if (type == OP_BACK_REF)
+	{
+	  Idx subexp_idx = dfa->nodes[node].opr.idx + 1;
+	  if (subexp_idx < nregs)
+	    naccepted = regs[subexp_idx].rm_eo - regs[subexp_idx].rm_so;
+	  if (fs != NULL)
+	    {
+	      if (subexp_idx >= nregs
+		  || regs[subexp_idx].rm_so == -1
+		  || regs[subexp_idx].rm_eo == -1)
+		return -1;
+	      else if (naccepted)
+		{
+		  char *buf = (char *) re_string_get_buffer (&mctx->input);
+		  if (mctx->input.valid_len - *pidx < naccepted
+		      || (memcmp (buf + regs[subexp_idx].rm_so, buf + *pidx,
+				  naccepted)
+			  != 0))
+		    return -1;
+		}
+	    }
+
+	  if (naccepted == 0)
+	    {
+	      Idx dest_node;
+	      bool ok = re_node_set_insert (eps_via_nodes, node);
+	      if (__glibc_unlikely (! ok))
+		return -2;
+	      dest_node = dfa->edests[node].elems[0];
+	      if (re_node_set_contains (&mctx->state_log[*pidx]->nodes,
+					dest_node))
+		return dest_node;
+	    }
+	}
+
+      if (naccepted != 0
+	  || check_node_accept (mctx, dfa->nodes + node, *pidx))
+	{
+	  Idx dest_node = dfa->nexts[node];
+	  *pidx = (naccepted == 0) ? *pidx + 1 : *pidx + naccepted;
+	  if (fs && (*pidx > mctx->match_last || mctx->state_log[*pidx] == NULL
+		     || !re_node_set_contains (&mctx->state_log[*pidx]->nodes,
+					       dest_node)))
+	    return -1;
+	  re_node_set_empty (eps_via_nodes);
+	  return dest_node;
+	}
+    }
+  return -1;
+}
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+push_fail_stack (struct re_fail_stack_t *fs, Idx str_idx, Idx dest_node,
+		 Idx nregs, regmatch_t *regs, regmatch_t *prevregs,
+		 re_node_set *eps_via_nodes)
+{
+  reg_errcode_t err;
+  Idx num = fs->num++;
+  if (fs->num == fs->alloc)
+    {
+      struct re_fail_stack_ent_t *new_array;
+      new_array = re_realloc (fs->stack, struct re_fail_stack_ent_t,
+                              fs->alloc * 2);
+      if (new_array == NULL)
+	return REG_ESPACE;
+      fs->alloc *= 2;
+      fs->stack = new_array;
+    }
+  fs->stack[num].idx = str_idx;
+  fs->stack[num].node = dest_node;
+  fs->stack[num].regs = re_malloc (regmatch_t, 2 * nregs);
+  if (fs->stack[num].regs == NULL)
+    return REG_ESPACE;
+  memcpy (fs->stack[num].regs, regs, sizeof (regmatch_t) * nregs);
+  memcpy (fs->stack[num].regs + nregs, prevregs, sizeof (regmatch_t) * nregs);
+  err = re_node_set_init_copy (&fs->stack[num].eps_via_nodes, eps_via_nodes);
+  return err;
+}
+
+static Idx
+pop_fail_stack (struct re_fail_stack_t *fs, Idx *pidx, Idx nregs,
+		regmatch_t *regs, regmatch_t *prevregs,
+		re_node_set *eps_via_nodes)
+{
+  if (fs == NULL || fs->num == 0)
+    return -1;
+  Idx num = --fs->num;
+  *pidx = fs->stack[num].idx;
+  memcpy (regs, fs->stack[num].regs, sizeof (regmatch_t) * nregs);
+  memcpy (prevregs, fs->stack[num].regs + nregs, sizeof (regmatch_t) * nregs);
+  re_node_set_free (eps_via_nodes);
+  re_free (fs->stack[num].regs);
+  *eps_via_nodes = fs->stack[num].eps_via_nodes;
+  DEBUG_ASSERT (0 <= fs->stack[num].node);
+  return fs->stack[num].node;
+}
+
+
+#define DYNARRAY_STRUCT  regmatch_list
+#define DYNARRAY_ELEMENT regmatch_t
+#define DYNARRAY_PREFIX  regmatch_list_
+#include <malloc/dynarray-skeleton.c>
+
+/* Set the positions where the subexpressions are starts/ends to registers
+   PMATCH.
+   Note: We assume that pmatch[0] is already set, and
+   pmatch[i].rm_so == pmatch[i].rm_eo == -1 for 0 < i < nmatch.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+set_regs (const regex_t *preg, const re_match_context_t *mctx, size_t nmatch,
+	  regmatch_t *pmatch, bool fl_backtrack)
+{
+  const re_dfa_t *dfa = preg->buffer;
+  Idx idx, cur_node;
+  re_node_set eps_via_nodes;
+  struct re_fail_stack_t *fs;
+  struct re_fail_stack_t fs_body = { 0, 2, NULL };
+  struct regmatch_list prev_match;
+  regmatch_list_init (&prev_match);
+
+  DEBUG_ASSERT (nmatch > 1);
+  DEBUG_ASSERT (mctx->state_log != NULL);
+  if (fl_backtrack)
+    {
+      fs = &fs_body;
+      fs->stack = re_malloc (struct re_fail_stack_ent_t, fs->alloc);
+      if (fs->stack == NULL)
+	return REG_ESPACE;
+    }
+  else
+    fs = NULL;
+
+  cur_node = dfa->init_node;
+  re_node_set_init_empty (&eps_via_nodes);
+
+  if (!regmatch_list_resize (&prev_match, nmatch))
+    {
+      regmatch_list_free (&prev_match);
+      free_fail_stack_return (fs);
+      return REG_ESPACE;
+    }
+  regmatch_t *prev_idx_match = regmatch_list_begin (&prev_match);
+  memcpy (prev_idx_match, pmatch, sizeof (regmatch_t) * nmatch);
+
+  for (idx = pmatch[0].rm_so; idx <= pmatch[0].rm_eo ;)
+    {
+      update_regs (dfa, pmatch, prev_idx_match, cur_node, idx, nmatch);
+
+      if ((idx == pmatch[0].rm_eo && cur_node == mctx->last_node)
+	  || (fs && re_node_set_contains (&eps_via_nodes, cur_node)))
+	{
+	  Idx reg_idx;
+	  cur_node = -1;
+	  if (fs)
+	    {
+	      for (reg_idx = 0; reg_idx < nmatch; ++reg_idx)
+		if (pmatch[reg_idx].rm_so > -1 && pmatch[reg_idx].rm_eo == -1)
+		  {
+		    cur_node = pop_fail_stack (fs, &idx, nmatch, pmatch,
+					       prev_idx_match, &eps_via_nodes);
+		    break;
+		  }
+	    }
+	  if (cur_node < 0)
+	    {
+	      re_node_set_free (&eps_via_nodes);
+	      regmatch_list_free (&prev_match);
+	      return free_fail_stack_return (fs);
+	    }
+	}
+
+      /* Proceed to next node.  */
+      cur_node = proceed_next_node (mctx, nmatch, pmatch, prev_idx_match,
+				    &idx, cur_node,
+				    &eps_via_nodes, fs);
+
+      if (__glibc_unlikely (cur_node < 0))
+	{
+	  if (__glibc_unlikely (cur_node == -2))
+	    {
+	      re_node_set_free (&eps_via_nodes);
+	      regmatch_list_free (&prev_match);
+	      free_fail_stack_return (fs);
+	      return REG_ESPACE;
+	    }
+	  cur_node = pop_fail_stack (fs, &idx, nmatch, pmatch,
+				     prev_idx_match, &eps_via_nodes);
+	  if (cur_node < 0)
+	    {
+	      re_node_set_free (&eps_via_nodes);
+	      regmatch_list_free (&prev_match);
+	      free_fail_stack_return (fs);
+	      return REG_NOMATCH;
+	    }
+	}
+    }
+  re_node_set_free (&eps_via_nodes);
+  regmatch_list_free (&prev_match);
+  return free_fail_stack_return (fs);
+}
+
+static reg_errcode_t
+free_fail_stack_return (struct re_fail_stack_t *fs)
+{
+  if (fs)
+    {
+      Idx fs_idx;
+      for (fs_idx = 0; fs_idx < fs->num; ++fs_idx)
+	{
+	  re_node_set_free (&fs->stack[fs_idx].eps_via_nodes);
+	  re_free (fs->stack[fs_idx].regs);
+	}
+      re_free (fs->stack);
+    }
+  return REG_NOERROR;
+}
+
+static void
+update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
+	     regmatch_t *prev_idx_match, Idx cur_node, Idx cur_idx, Idx nmatch)
+{
+  int type = dfa->nodes[cur_node].type;
+  if (type == OP_OPEN_SUBEXP)
+    {
+      Idx reg_num = dfa->nodes[cur_node].opr.idx + 1;
+
+      /* We are at the first node of this sub expression.  */
+      if (reg_num < nmatch)
+	{
+	  pmatch[reg_num].rm_so = cur_idx;
+	  pmatch[reg_num].rm_eo = -1;
+	}
+    }
+  else if (type == OP_CLOSE_SUBEXP)
+    {
+      /* We are at the last node of this sub expression.  */
+      Idx reg_num = dfa->nodes[cur_node].opr.idx + 1;
+      if (reg_num < nmatch)
+	{
+	  if (pmatch[reg_num].rm_so < cur_idx)
+	    {
+	      pmatch[reg_num].rm_eo = cur_idx;
+	      /* This is a non-empty match or we are not inside an optional
+		 subexpression.  Accept this right away.  */
+	      memcpy (prev_idx_match, pmatch, sizeof (regmatch_t) * nmatch);
+	    }
+	  else
+	    {
+	      if (dfa->nodes[cur_node].opt_subexp
+		  && prev_idx_match[reg_num].rm_so != -1)
+		/* We transited through an empty match for an optional
+		   subexpression, like (a?)*, and this is not the subexp's
+		   first match.  Copy back the old content of the registers
+		   so that matches of an inner subexpression are undone as
+		   well, like in ((a?))*.  */
+		memcpy (pmatch, prev_idx_match, sizeof (regmatch_t) * nmatch);
+	      else
+		/* We completed a subexpression, but it may be part of
+		   an optional one, so do not update PREV_IDX_MATCH.  */
+		pmatch[reg_num].rm_eo = cur_idx;
+	    }
+	}
+    }
+}
+
+/* This function checks the STATE_LOG from the SCTX->last_str_idx to 0
+   and sift the nodes in each states according to the following rules.
+   Updated state_log will be wrote to STATE_LOG.
+
+   Rules: We throw away the Node 'a' in the STATE_LOG[STR_IDX] if...
+     1. When STR_IDX == MATCH_LAST(the last index in the state_log):
+	If 'a' isn't the LAST_NODE and 'a' can't epsilon transit to
+	the LAST_NODE, we throw away the node 'a'.
+     2. When 0 <= STR_IDX < MATCH_LAST and 'a' accepts
+	string 's' and transit to 'b':
+	i. If 'b' isn't in the STATE_LOG[STR_IDX+strlen('s')], we throw
+	   away the node 'a'.
+	ii. If 'b' is in the STATE_LOG[STR_IDX+strlen('s')] but 'b' is
+	    thrown away, we throw away the node 'a'.
+     3. When 0 <= STR_IDX < MATCH_LAST and 'a' epsilon transit to 'b':
+	i. If 'b' isn't in the STATE_LOG[STR_IDX], we throw away the
+	   node 'a'.
+	ii. If 'b' is in the STATE_LOG[STR_IDX] but 'b' is thrown away,
+	    we throw away the node 'a'.  */
+
+#define STATE_NODE_CONTAINS(state,node) \
+  ((state) != NULL && re_node_set_contains (&(state)->nodes, node))
+
+static reg_errcode_t
+sift_states_backward (const re_match_context_t *mctx, re_sift_context_t *sctx)
+{
+  reg_errcode_t err;
+  int null_cnt = 0;
+  Idx str_idx = sctx->last_str_idx;
+  re_node_set cur_dest;
+
+  DEBUG_ASSERT (mctx->state_log != NULL && mctx->state_log[str_idx] != NULL);
+
+  /* Build sifted state_log[str_idx].  It has the nodes which can epsilon
+     transit to the last_node and the last_node itself.  */
+  err = re_node_set_init_1 (&cur_dest, sctx->last_node);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    return err;
+  err = update_cur_sifted_state (mctx, sctx, str_idx, &cur_dest);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    goto free_return;
+
+  /* Then check each states in the state_log.  */
+  while (str_idx > 0)
+    {
+      /* Update counters.  */
+      null_cnt = (sctx->sifted_states[str_idx] == NULL) ? null_cnt + 1 : 0;
+      if (null_cnt > mctx->max_mb_elem_len)
+	{
+	  memset (sctx->sifted_states, '\0',
+		  sizeof (re_dfastate_t *) * str_idx);
+	  re_node_set_free (&cur_dest);
+	  return REG_NOERROR;
+	}
+      re_node_set_empty (&cur_dest);
+      --str_idx;
+
+      if (mctx->state_log[str_idx])
+	{
+	  err = build_sifted_states (mctx, sctx, str_idx, &cur_dest);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    goto free_return;
+	}
+
+      /* Add all the nodes which satisfy the following conditions:
+	 - It can epsilon transit to a node in CUR_DEST.
+	 - It is in CUR_SRC.
+	 And update state_log.  */
+      err = update_cur_sifted_state (mctx, sctx, str_idx, &cur_dest);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	goto free_return;
+    }
+  err = REG_NOERROR;
+ free_return:
+  re_node_set_free (&cur_dest);
+  return err;
+}
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+build_sifted_states (const re_match_context_t *mctx, re_sift_context_t *sctx,
+		     Idx str_idx, re_node_set *cur_dest)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  const re_node_set *cur_src = &mctx->state_log[str_idx]->non_eps_nodes;
+  Idx i;
+
+  /* Then build the next sifted state.
+     We build the next sifted state on 'cur_dest', and update
+     'sifted_states[str_idx]' with 'cur_dest'.
+     Note:
+     'cur_dest' is the sifted state from 'state_log[str_idx + 1]'.
+     'cur_src' points the node_set of the old 'state_log[str_idx]'
+     (with the epsilon nodes pre-filtered out).  */
+  for (i = 0; i < cur_src->nelem; i++)
+    {
+      Idx prev_node = cur_src->elems[i];
+      int naccepted = 0;
+      bool ok;
+      DEBUG_ASSERT (!IS_EPSILON_NODE (dfa->nodes[prev_node].type));
+
+#ifdef RE_ENABLE_I18N
+      /* If the node may accept "multi byte".  */
+      if (dfa->nodes[prev_node].accept_mb)
+	naccepted = sift_states_iter_mb (mctx, sctx, prev_node,
+					 str_idx, sctx->last_str_idx);
+#endif /* RE_ENABLE_I18N */
+
+      /* We don't check backreferences here.
+	 See update_cur_sifted_state().  */
+      if (!naccepted
+	  && check_node_accept (mctx, dfa->nodes + prev_node, str_idx)
+	  && STATE_NODE_CONTAINS (sctx->sifted_states[str_idx + 1],
+				  dfa->nexts[prev_node]))
+	naccepted = 1;
+
+      if (naccepted == 0)
+	continue;
+
+      if (sctx->limits.nelem)
+	{
+	  Idx to_idx = str_idx + naccepted;
+	  if (check_dst_limits (mctx, &sctx->limits,
+				dfa->nexts[prev_node], to_idx,
+				prev_node, str_idx))
+	    continue;
+	}
+      ok = re_node_set_insert (cur_dest, prev_node);
+      if (__glibc_unlikely (! ok))
+	return REG_ESPACE;
+    }
+
+  return REG_NOERROR;
+}
+
+/* Helper functions.  */
+
+static reg_errcode_t
+clean_state_log_if_needed (re_match_context_t *mctx, Idx next_state_log_idx)
+{
+  Idx top = mctx->state_log_top;
+
+  if ((next_state_log_idx >= mctx->input.bufs_len
+       && mctx->input.bufs_len < mctx->input.len)
+      || (next_state_log_idx >= mctx->input.valid_len
+	  && mctx->input.valid_len < mctx->input.len))
+    {
+      reg_errcode_t err;
+      err = extend_buffers (mctx, next_state_log_idx + 1);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	return err;
+    }
+
+  if (top < next_state_log_idx)
+    {
+      memset (mctx->state_log + top + 1, '\0',
+	      sizeof (re_dfastate_t *) * (next_state_log_idx - top));
+      mctx->state_log_top = next_state_log_idx;
+    }
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+merge_state_array (const re_dfa_t *dfa, re_dfastate_t **dst,
+		   re_dfastate_t **src, Idx num)
+{
+  Idx st_idx;
+  reg_errcode_t err;
+  for (st_idx = 0; st_idx < num; ++st_idx)
+    {
+      if (dst[st_idx] == NULL)
+	dst[st_idx] = src[st_idx];
+      else if (src[st_idx] != NULL)
+	{
+	  re_node_set merged_set;
+	  err = re_node_set_init_union (&merged_set, &dst[st_idx]->nodes,
+					&src[st_idx]->nodes);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return err;
+	  dst[st_idx] = re_acquire_state (&err, dfa, &merged_set);
+	  re_node_set_free (&merged_set);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return err;
+	}
+    }
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+update_cur_sifted_state (const re_match_context_t *mctx,
+			 re_sift_context_t *sctx, Idx str_idx,
+			 re_node_set *dest_nodes)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err = REG_NOERROR;
+  const re_node_set *candidates;
+  candidates = ((mctx->state_log[str_idx] == NULL) ? NULL
+		: &mctx->state_log[str_idx]->nodes);
+
+  if (dest_nodes->nelem == 0)
+    sctx->sifted_states[str_idx] = NULL;
+  else
+    {
+      if (candidates)
+	{
+	  /* At first, add the nodes which can epsilon transit to a node in
+	     DEST_NODE.  */
+	  err = add_epsilon_src_nodes (dfa, dest_nodes, candidates);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return err;
+
+	  /* Then, check the limitations in the current sift_context.  */
+	  if (sctx->limits.nelem)
+	    {
+	      err = check_subexp_limits (dfa, dest_nodes, candidates, &sctx->limits,
+					 mctx->bkref_ents, str_idx);
+	      if (__glibc_unlikely (err != REG_NOERROR))
+		return err;
+	    }
+	}
+
+      sctx->sifted_states[str_idx] = re_acquire_state (&err, dfa, dest_nodes);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	return err;
+    }
+
+  if (candidates && mctx->state_log[str_idx]->has_backref)
+    {
+      err = sift_states_bkref (mctx, sctx, str_idx, candidates);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	return err;
+    }
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+add_epsilon_src_nodes (const re_dfa_t *dfa, re_node_set *dest_nodes,
+		       const re_node_set *candidates)
+{
+  reg_errcode_t err = REG_NOERROR;
+  Idx i;
+
+  re_dfastate_t *state = re_acquire_state (&err, dfa, dest_nodes);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    return err;
+
+  if (!state->inveclosure.alloc)
+    {
+      err = re_node_set_alloc (&state->inveclosure, dest_nodes->nelem);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	return REG_ESPACE;
+      for (i = 0; i < dest_nodes->nelem; i++)
+	{
+	  err = re_node_set_merge (&state->inveclosure,
+				   dfa->inveclosures + dest_nodes->elems[i]);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return REG_ESPACE;
+	}
+    }
+  return re_node_set_add_intersect (dest_nodes, candidates,
+				    &state->inveclosure);
+}
+
+static reg_errcode_t
+sub_epsilon_src_nodes (const re_dfa_t *dfa, Idx node, re_node_set *dest_nodes,
+		       const re_node_set *candidates)
+{
+    Idx ecl_idx;
+    reg_errcode_t err;
+    re_node_set *inv_eclosure = dfa->inveclosures + node;
+    re_node_set except_nodes;
+    re_node_set_init_empty (&except_nodes);
+    for (ecl_idx = 0; ecl_idx < inv_eclosure->nelem; ++ecl_idx)
+      {
+	Idx cur_node = inv_eclosure->elems[ecl_idx];
+	if (cur_node == node)
+	  continue;
+	if (IS_EPSILON_NODE (dfa->nodes[cur_node].type))
+	  {
+	    Idx edst1 = dfa->edests[cur_node].elems[0];
+	    Idx edst2 = ((dfa->edests[cur_node].nelem > 1)
+			 ? dfa->edests[cur_node].elems[1] : -1);
+	    if ((!re_node_set_contains (inv_eclosure, edst1)
+		 && re_node_set_contains (dest_nodes, edst1))
+		|| (edst2 > 0
+		    && !re_node_set_contains (inv_eclosure, edst2)
+		    && re_node_set_contains (dest_nodes, edst2)))
+	      {
+		err = re_node_set_add_intersect (&except_nodes, candidates,
+						 dfa->inveclosures + cur_node);
+		if (__glibc_unlikely (err != REG_NOERROR))
+		  {
+		    re_node_set_free (&except_nodes);
+		    return err;
+		  }
+	      }
+	  }
+      }
+    for (ecl_idx = 0; ecl_idx < inv_eclosure->nelem; ++ecl_idx)
+      {
+	Idx cur_node = inv_eclosure->elems[ecl_idx];
+	if (!re_node_set_contains (&except_nodes, cur_node))
+	  {
+	    Idx idx = re_node_set_contains (dest_nodes, cur_node) - 1;
+	    re_node_set_remove_at (dest_nodes, idx);
+	  }
+      }
+    re_node_set_free (&except_nodes);
+    return REG_NOERROR;
+}
+
+static bool
+check_dst_limits (const re_match_context_t *mctx, const re_node_set *limits,
+		  Idx dst_node, Idx dst_idx, Idx src_node, Idx src_idx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  Idx lim_idx, src_pos, dst_pos;
+
+  Idx dst_bkref_idx = search_cur_bkref_entry (mctx, dst_idx);
+  Idx src_bkref_idx = search_cur_bkref_entry (mctx, src_idx);
+  for (lim_idx = 0; lim_idx < limits->nelem; ++lim_idx)
+    {
+      Idx subexp_idx;
+      struct re_backref_cache_entry *ent;
+      ent = mctx->bkref_ents + limits->elems[lim_idx];
+      subexp_idx = dfa->nodes[ent->node].opr.idx;
+
+      dst_pos = check_dst_limits_calc_pos (mctx, limits->elems[lim_idx],
+					   subexp_idx, dst_node, dst_idx,
+					   dst_bkref_idx);
+      src_pos = check_dst_limits_calc_pos (mctx, limits->elems[lim_idx],
+					   subexp_idx, src_node, src_idx,
+					   src_bkref_idx);
+
+      /* In case of:
+	 <src> <dst> ( <subexp> )
+	 ( <subexp> ) <src> <dst>
+	 ( <subexp1> <src> <subexp2> <dst> <subexp3> )  */
+      if (src_pos == dst_pos)
+	continue; /* This is unrelated limitation.  */
+      else
+	return true;
+    }
+  return false;
+}
+
+static int
+check_dst_limits_calc_pos_1 (const re_match_context_t *mctx, int boundaries,
+			     Idx subexp_idx, Idx from_node, Idx bkref_idx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  const re_node_set *eclosures = dfa->eclosures + from_node;
+  Idx node_idx;
+
+  /* Else, we are on the boundary: examine the nodes on the epsilon
+     closure.  */
+  for (node_idx = 0; node_idx < eclosures->nelem; ++node_idx)
+    {
+      Idx node = eclosures->elems[node_idx];
+      switch (dfa->nodes[node].type)
+	{
+	case OP_BACK_REF:
+	  if (bkref_idx != -1)
+	    {
+	      struct re_backref_cache_entry *ent = mctx->bkref_ents + bkref_idx;
+	      do
+		{
+		  Idx dst;
+		  int cpos;
+
+		  if (ent->node != node)
+		    continue;
+
+		  if (subexp_idx < BITSET_WORD_BITS
+		      && !(ent->eps_reachable_subexps_map
+			   & ((bitset_word_t) 1 << subexp_idx)))
+		    continue;
+
+		  /* Recurse trying to reach the OP_OPEN_SUBEXP and
+		     OP_CLOSE_SUBEXP cases below.  But, if the
+		     destination node is the same node as the source
+		     node, don't recurse because it would cause an
+		     infinite loop: a regex that exhibits this behavior
+		     is ()\1*\1*  */
+		  dst = dfa->edests[node].elems[0];
+		  if (dst == from_node)
+		    {
+		      if (boundaries & 1)
+			return -1;
+		      else /* if (boundaries & 2) */
+			return 0;
+		    }
+
+		  cpos =
+		    check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx,
+						 dst, bkref_idx);
+		  if (cpos == -1 /* && (boundaries & 1) */)
+		    return -1;
+		  if (cpos == 0 && (boundaries & 2))
+		    return 0;
+
+		  if (subexp_idx < BITSET_WORD_BITS)
+		    ent->eps_reachable_subexps_map
+		      &= ~((bitset_word_t) 1 << subexp_idx);
+		}
+	      while (ent++->more);
+	    }
+	  break;
+
+	case OP_OPEN_SUBEXP:
+	  if ((boundaries & 1) && subexp_idx == dfa->nodes[node].opr.idx)
+	    return -1;
+	  break;
+
+	case OP_CLOSE_SUBEXP:
+	  if ((boundaries & 2) && subexp_idx == dfa->nodes[node].opr.idx)
+	    return 0;
+	  break;
+
+	default:
+	    break;
+	}
+    }
+
+  return (boundaries & 2) ? 1 : 0;
+}
+
+static int
+check_dst_limits_calc_pos (const re_match_context_t *mctx, Idx limit,
+			   Idx subexp_idx, Idx from_node, Idx str_idx,
+			   Idx bkref_idx)
+{
+  struct re_backref_cache_entry *lim = mctx->bkref_ents + limit;
+  int boundaries;
+
+  /* If we are outside the range of the subexpression, return -1 or 1.  */
+  if (str_idx < lim->subexp_from)
+    return -1;
+
+  if (lim->subexp_to < str_idx)
+    return 1;
+
+  /* If we are within the subexpression, return 0.  */
+  boundaries = (str_idx == lim->subexp_from);
+  boundaries |= (str_idx == lim->subexp_to) << 1;
+  if (boundaries == 0)
+    return 0;
+
+  /* Else, examine epsilon closure.  */
+  return check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx,
+				      from_node, bkref_idx);
+}
+
+/* Check the limitations of sub expressions LIMITS, and remove the nodes
+   which are against limitations from DEST_NODES. */
+
+static reg_errcode_t
+check_subexp_limits (const re_dfa_t *dfa, re_node_set *dest_nodes,
+		     const re_node_set *candidates, re_node_set *limits,
+		     struct re_backref_cache_entry *bkref_ents, Idx str_idx)
+{
+  reg_errcode_t err;
+  Idx node_idx, lim_idx;
+
+  for (lim_idx = 0; lim_idx < limits->nelem; ++lim_idx)
+    {
+      Idx subexp_idx;
+      struct re_backref_cache_entry *ent;
+      ent = bkref_ents + limits->elems[lim_idx];
+
+      if (str_idx <= ent->subexp_from || ent->str_idx < str_idx)
+	continue; /* This is unrelated limitation.  */
+
+      subexp_idx = dfa->nodes[ent->node].opr.idx;
+      if (ent->subexp_to == str_idx)
+	{
+	  Idx ops_node = -1;
+	  Idx cls_node = -1;
+	  for (node_idx = 0; node_idx < dest_nodes->nelem; ++node_idx)
+	    {
+	      Idx node = dest_nodes->elems[node_idx];
+	      re_token_type_t type = dfa->nodes[node].type;
+	      if (type == OP_OPEN_SUBEXP
+		  && subexp_idx == dfa->nodes[node].opr.idx)
+		ops_node = node;
+	      else if (type == OP_CLOSE_SUBEXP
+		       && subexp_idx == dfa->nodes[node].opr.idx)
+		cls_node = node;
+	    }
+
+	  /* Check the limitation of the open subexpression.  */
+	  /* Note that (ent->subexp_to = str_idx != ent->subexp_from).  */
+	  if (ops_node >= 0)
+	    {
+	      err = sub_epsilon_src_nodes (dfa, ops_node, dest_nodes,
+					   candidates);
+	      if (__glibc_unlikely (err != REG_NOERROR))
+		return err;
+	    }
+
+	  /* Check the limitation of the close subexpression.  */
+	  if (cls_node >= 0)
+	    for (node_idx = 0; node_idx < dest_nodes->nelem; ++node_idx)
+	      {
+		Idx node = dest_nodes->elems[node_idx];
+		if (!re_node_set_contains (dfa->inveclosures + node,
+					   cls_node)
+		    && !re_node_set_contains (dfa->eclosures + node,
+					      cls_node))
+		  {
+		    /* It is against this limitation.
+		       Remove it form the current sifted state.  */
+		    err = sub_epsilon_src_nodes (dfa, node, dest_nodes,
+						 candidates);
+		    if (__glibc_unlikely (err != REG_NOERROR))
+		      return err;
+		    --node_idx;
+		  }
+	      }
+	}
+      else /* (ent->subexp_to != str_idx)  */
+	{
+	  for (node_idx = 0; node_idx < dest_nodes->nelem; ++node_idx)
+	    {
+	      Idx node = dest_nodes->elems[node_idx];
+	      re_token_type_t type = dfa->nodes[node].type;
+	      if (type == OP_CLOSE_SUBEXP || type == OP_OPEN_SUBEXP)
+		{
+		  if (subexp_idx != dfa->nodes[node].opr.idx)
+		    continue;
+		  /* It is against this limitation.
+		     Remove it form the current sifted state.  */
+		  err = sub_epsilon_src_nodes (dfa, node, dest_nodes,
+					       candidates);
+		  if (__glibc_unlikely (err != REG_NOERROR))
+		    return err;
+		}
+	    }
+	}
+    }
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+sift_states_bkref (const re_match_context_t *mctx, re_sift_context_t *sctx,
+		   Idx str_idx, const re_node_set *candidates)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err;
+  Idx node_idx, node;
+  re_sift_context_t local_sctx;
+  Idx first_idx = search_cur_bkref_entry (mctx, str_idx);
+
+  if (first_idx == -1)
+    return REG_NOERROR;
+
+  local_sctx.sifted_states = NULL; /* Mark that it hasn't been initialized.  */
+
+  for (node_idx = 0; node_idx < candidates->nelem; ++node_idx)
+    {
+      Idx enabled_idx;
+      re_token_type_t type;
+      struct re_backref_cache_entry *entry;
+      node = candidates->elems[node_idx];
+      type = dfa->nodes[node].type;
+      /* Avoid infinite loop for the REs like "()\1+".  */
+      if (node == sctx->last_node && str_idx == sctx->last_str_idx)
+	continue;
+      if (type != OP_BACK_REF)
+	continue;
+
+      entry = mctx->bkref_ents + first_idx;
+      enabled_idx = first_idx;
+      do
+	{
+	  Idx subexp_len;
+	  Idx to_idx;
+	  Idx dst_node;
+	  bool ok;
+	  re_dfastate_t *cur_state;
+
+	  if (entry->node != node)
+	    continue;
+	  subexp_len = entry->subexp_to - entry->subexp_from;
+	  to_idx = str_idx + subexp_len;
+	  dst_node = (subexp_len ? dfa->nexts[node]
+		      : dfa->edests[node].elems[0]);
+
+	  if (to_idx > sctx->last_str_idx
+	      || sctx->sifted_states[to_idx] == NULL
+	      || !STATE_NODE_CONTAINS (sctx->sifted_states[to_idx], dst_node)
+	      || check_dst_limits (mctx, &sctx->limits, node,
+				   str_idx, dst_node, to_idx))
+	    continue;
+
+	  if (local_sctx.sifted_states == NULL)
+	    {
+	      local_sctx = *sctx;
+	      err = re_node_set_init_copy (&local_sctx.limits, &sctx->limits);
+	      if (__glibc_unlikely (err != REG_NOERROR))
+		goto free_return;
+	    }
+	  local_sctx.last_node = node;
+	  local_sctx.last_str_idx = str_idx;
+	  ok = re_node_set_insert (&local_sctx.limits, enabled_idx);
+	  if (__glibc_unlikely (! ok))
+	    {
+	      err = REG_ESPACE;
+	      goto free_return;
+	    }
+	  cur_state = local_sctx.sifted_states[str_idx];
+	  err = sift_states_backward (mctx, &local_sctx);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    goto free_return;
+	  if (sctx->limited_states != NULL)
+	    {
+	      err = merge_state_array (dfa, sctx->limited_states,
+				       local_sctx.sifted_states,
+				       str_idx + 1);
+	      if (__glibc_unlikely (err != REG_NOERROR))
+		goto free_return;
+	    }
+	  local_sctx.sifted_states[str_idx] = cur_state;
+	  re_node_set_remove (&local_sctx.limits, enabled_idx);
+
+	  /* mctx->bkref_ents may have changed, reload the pointer.  */
+	  entry = mctx->bkref_ents + enabled_idx;
+	}
+      while (enabled_idx++, entry++->more);
+    }
+  err = REG_NOERROR;
+ free_return:
+  if (local_sctx.sifted_states != NULL)
+    {
+      re_node_set_free (&local_sctx.limits);
+    }
+
+  return err;
+}
+
+
+#ifdef RE_ENABLE_I18N
+static int
+sift_states_iter_mb (const re_match_context_t *mctx, re_sift_context_t *sctx,
+		     Idx node_idx, Idx str_idx, Idx max_str_idx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  int naccepted;
+  /* Check the node can accept "multi byte".  */
+  naccepted = check_node_accept_bytes (dfa, node_idx, &mctx->input, str_idx);
+  if (naccepted > 0 && str_idx + naccepted <= max_str_idx
+      && !STATE_NODE_CONTAINS (sctx->sifted_states[str_idx + naccepted],
+			       dfa->nexts[node_idx]))
+    /* The node can't accept the "multi byte", or the
+       destination was already thrown away, then the node
+       couldn't accept the current input "multi byte".   */
+    naccepted = 0;
+  /* Otherwise, it is sure that the node could accept
+     'naccepted' bytes input.  */
+  return naccepted;
+}
+#endif /* RE_ENABLE_I18N */
+
+
+/* Functions for state transition.  */
+
+/* Return the next state to which the current state STATE will transit by
+   accepting the current input byte, and update STATE_LOG if necessary.
+   Return NULL on failure.
+   If STATE can accept a multibyte char/collating element/back reference
+   update the destination of STATE_LOG.  */
+
+static re_dfastate_t *
+__attribute_warn_unused_result__
+transit_state (reg_errcode_t *err, re_match_context_t *mctx,
+	       re_dfastate_t *state)
+{
+  re_dfastate_t **trtable;
+  unsigned char ch;
+
+#ifdef RE_ENABLE_I18N
+  /* If the current state can accept multibyte.  */
+  if (__glibc_unlikely (state->accept_mb))
+    {
+      *err = transit_state_mb (mctx, state);
+      if (__glibc_unlikely (*err != REG_NOERROR))
+	return NULL;
+    }
+#endif /* RE_ENABLE_I18N */
+
+  /* Then decide the next state with the single byte.  */
+#if 0
+  if (0)
+    /* don't use transition table  */
+    return transit_state_sb (err, mctx, state);
+#endif
+
+  /* Use transition table  */
+  ch = re_string_fetch_byte (&mctx->input);
+  for (;;)
+    {
+      trtable = state->trtable;
+      if (__glibc_likely (trtable != NULL))
+	return trtable[ch];
+
+      trtable = state->word_trtable;
+      if (__glibc_likely (trtable != NULL))
+	{
+	  unsigned int context;
+	  context
+	    = re_string_context_at (&mctx->input,
+				    re_string_cur_idx (&mctx->input) - 1,
+				    mctx->eflags);
+	  if (IS_WORD_CONTEXT (context))
+	    return trtable[ch + SBC_MAX];
+	  else
+	    return trtable[ch];
+	}
+
+      if (!build_trtable (mctx->dfa, state))
+	{
+	  *err = REG_ESPACE;
+	  return NULL;
+	}
+
+      /* Retry, we now have a transition table.  */
+    }
+}
+
+/* Update the state_log if we need */
+static re_dfastate_t *
+merge_state_with_log (reg_errcode_t *err, re_match_context_t *mctx,
+		      re_dfastate_t *next_state)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  Idx cur_idx = re_string_cur_idx (&mctx->input);
+
+  if (cur_idx > mctx->state_log_top)
+    {
+      mctx->state_log[cur_idx] = next_state;
+      mctx->state_log_top = cur_idx;
+    }
+  else if (mctx->state_log[cur_idx] == 0)
+    {
+      mctx->state_log[cur_idx] = next_state;
+    }
+  else
+    {
+      re_dfastate_t *pstate;
+      unsigned int context;
+      re_node_set next_nodes, *log_nodes, *table_nodes = NULL;
+      /* If (state_log[cur_idx] != 0), it implies that cur_idx is
+	 the destination of a multibyte char/collating element/
+	 back reference.  Then the next state is the union set of
+	 these destinations and the results of the transition table.  */
+      pstate = mctx->state_log[cur_idx];
+      log_nodes = pstate->entrance_nodes;
+      if (next_state != NULL)
+	{
+	  table_nodes = next_state->entrance_nodes;
+	  *err = re_node_set_init_union (&next_nodes, table_nodes,
+					     log_nodes);
+	  if (__glibc_unlikely (*err != REG_NOERROR))
+	    return NULL;
+	}
+      else
+	next_nodes = *log_nodes;
+      /* Note: We already add the nodes of the initial state,
+	 then we don't need to add them here.  */
+
+      context = re_string_context_at (&mctx->input,
+				      re_string_cur_idx (&mctx->input) - 1,
+				      mctx->eflags);
+      next_state = mctx->state_log[cur_idx]
+	= re_acquire_state_context (err, dfa, &next_nodes, context);
+      /* We don't need to check errors here, since the return value of
+	 this function is next_state and ERR is already set.  */
+
+      if (table_nodes != NULL)
+	re_node_set_free (&next_nodes);
+    }
+
+  if (__glibc_unlikely (dfa->nbackref) && next_state != NULL)
+    {
+      /* Check OP_OPEN_SUBEXP in the current state in case that we use them
+	 later.  We must check them here, since the back references in the
+	 next state might use them.  */
+      *err = check_subexp_matching_top (mctx, &next_state->nodes,
+					cur_idx);
+      if (__glibc_unlikely (*err != REG_NOERROR))
+	return NULL;
+
+      /* If the next state has back references.  */
+      if (next_state->has_backref)
+	{
+	  *err = transit_state_bkref (mctx, &next_state->nodes);
+	  if (__glibc_unlikely (*err != REG_NOERROR))
+	    return NULL;
+	  next_state = mctx->state_log[cur_idx];
+	}
+    }
+
+  return next_state;
+}
+
+/* Skip bytes in the input that correspond to part of a
+   multi-byte match, then look in the log for a state
+   from which to restart matching.  */
+static re_dfastate_t *
+find_recover_state (reg_errcode_t *err, re_match_context_t *mctx)
+{
+  re_dfastate_t *cur_state;
+  do
+    {
+      Idx max = mctx->state_log_top;
+      Idx cur_str_idx = re_string_cur_idx (&mctx->input);
+
+      do
+	{
+	  if (++cur_str_idx > max)
+	    return NULL;
+	  re_string_skip_bytes (&mctx->input, 1);
+	}
+      while (mctx->state_log[cur_str_idx] == NULL);
+
+      cur_state = merge_state_with_log (err, mctx, NULL);
+    }
+  while (*err == REG_NOERROR && cur_state == NULL);
+  return cur_state;
+}
+
+/* Helper functions for transit_state.  */
+
+/* From the node set CUR_NODES, pick up the nodes whose types are
+   OP_OPEN_SUBEXP and which have corresponding back references in the regular
+   expression. And register them to use them later for evaluating the
+   corresponding back references.  */
+
+static reg_errcode_t
+check_subexp_matching_top (re_match_context_t *mctx, re_node_set *cur_nodes,
+			   Idx str_idx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  Idx node_idx;
+  reg_errcode_t err;
+
+  /* TODO: This isn't efficient.
+	   Because there might be more than one nodes whose types are
+	   OP_OPEN_SUBEXP and whose index is SUBEXP_IDX, we must check all
+	   nodes.
+	   E.g. RE: (a){2}  */
+  for (node_idx = 0; node_idx < cur_nodes->nelem; ++node_idx)
+    {
+      Idx node = cur_nodes->elems[node_idx];
+      if (dfa->nodes[node].type == OP_OPEN_SUBEXP
+	  && dfa->nodes[node].opr.idx < BITSET_WORD_BITS
+	  && (dfa->used_bkref_map
+	      & ((bitset_word_t) 1 << dfa->nodes[node].opr.idx)))
+	{
+	  err = match_ctx_add_subtop (mctx, node, str_idx);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return err;
+	}
+    }
+  return REG_NOERROR;
+}
+
+#if 0
+/* Return the next state to which the current state STATE will transit by
+   accepting the current input byte.  Return NULL on failure.  */
+
+static re_dfastate_t *
+transit_state_sb (reg_errcode_t *err, re_match_context_t *mctx,
+		  re_dfastate_t *state)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  re_node_set next_nodes;
+  re_dfastate_t *next_state;
+  Idx node_cnt, cur_str_idx = re_string_cur_idx (&mctx->input);
+  unsigned int context;
+
+  *err = re_node_set_alloc (&next_nodes, state->nodes.nelem + 1);
+  if (__glibc_unlikely (*err != REG_NOERROR))
+    return NULL;
+  for (node_cnt = 0; node_cnt < state->nodes.nelem; ++node_cnt)
+    {
+      Idx cur_node = state->nodes.elems[node_cnt];
+      if (check_node_accept (mctx, dfa->nodes + cur_node, cur_str_idx))
+	{
+	  *err = re_node_set_merge (&next_nodes,
+				    dfa->eclosures + dfa->nexts[cur_node]);
+	  if (__glibc_unlikely (*err != REG_NOERROR))
+	    {
+	      re_node_set_free (&next_nodes);
+	      return NULL;
+	    }
+	}
+    }
+  context = re_string_context_at (&mctx->input, cur_str_idx, mctx->eflags);
+  next_state = re_acquire_state_context (err, dfa, &next_nodes, context);
+  /* We don't need to check errors here, since the return value of
+     this function is next_state and ERR is already set.  */
+
+  re_node_set_free (&next_nodes);
+  re_string_skip_bytes (&mctx->input, 1);
+  return next_state;
+}
+#endif
+
+#ifdef RE_ENABLE_I18N
+static reg_errcode_t
+transit_state_mb (re_match_context_t *mctx, re_dfastate_t *pstate)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err;
+  Idx i;
+
+  for (i = 0; i < pstate->nodes.nelem; ++i)
+    {
+      re_node_set dest_nodes, *new_nodes;
+      Idx cur_node_idx = pstate->nodes.elems[i];
+      int naccepted;
+      Idx dest_idx;
+      unsigned int context;
+      re_dfastate_t *dest_state;
+
+      if (!dfa->nodes[cur_node_idx].accept_mb)
+	continue;
+
+      if (dfa->nodes[cur_node_idx].constraint)
+	{
+	  context = re_string_context_at (&mctx->input,
+					  re_string_cur_idx (&mctx->input),
+					  mctx->eflags);
+	  if (NOT_SATISFY_NEXT_CONSTRAINT (dfa->nodes[cur_node_idx].constraint,
+					   context))
+	    continue;
+	}
+
+      /* How many bytes the node can accept?  */
+      naccepted = check_node_accept_bytes (dfa, cur_node_idx, &mctx->input,
+					   re_string_cur_idx (&mctx->input));
+      if (naccepted == 0)
+	continue;
+
+      /* The node can accepts 'naccepted' bytes.  */
+      dest_idx = re_string_cur_idx (&mctx->input) + naccepted;
+      mctx->max_mb_elem_len = ((mctx->max_mb_elem_len < naccepted) ? naccepted
+			       : mctx->max_mb_elem_len);
+      err = clean_state_log_if_needed (mctx, dest_idx);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	return err;
+      DEBUG_ASSERT (dfa->nexts[cur_node_idx] != -1);
+      new_nodes = dfa->eclosures + dfa->nexts[cur_node_idx];
+
+      dest_state = mctx->state_log[dest_idx];
+      if (dest_state == NULL)
+	dest_nodes = *new_nodes;
+      else
+	{
+	  err = re_node_set_init_union (&dest_nodes,
+					dest_state->entrance_nodes, new_nodes);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return err;
+	}
+      context = re_string_context_at (&mctx->input, dest_idx - 1,
+				      mctx->eflags);
+      mctx->state_log[dest_idx]
+	= re_acquire_state_context (&err, dfa, &dest_nodes, context);
+      if (dest_state != NULL)
+	re_node_set_free (&dest_nodes);
+      if (__glibc_unlikely (mctx->state_log[dest_idx] == NULL
+			    && err != REG_NOERROR))
+	return err;
+    }
+  return REG_NOERROR;
+}
+#endif /* RE_ENABLE_I18N */
+
+static reg_errcode_t
+transit_state_bkref (re_match_context_t *mctx, const re_node_set *nodes)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err;
+  Idx i;
+  Idx cur_str_idx = re_string_cur_idx (&mctx->input);
+
+  for (i = 0; i < nodes->nelem; ++i)
+    {
+      Idx dest_str_idx, prev_nelem, bkc_idx;
+      Idx node_idx = nodes->elems[i];
+      unsigned int context;
+      const re_token_t *node = dfa->nodes + node_idx;
+      re_node_set *new_dest_nodes;
+
+      /* Check whether 'node' is a backreference or not.  */
+      if (node->type != OP_BACK_REF)
+	continue;
+
+      if (node->constraint)
+	{
+	  context = re_string_context_at (&mctx->input, cur_str_idx,
+					  mctx->eflags);
+	  if (NOT_SATISFY_NEXT_CONSTRAINT (node->constraint, context))
+	    continue;
+	}
+
+      /* 'node' is a backreference.
+	 Check the substring which the substring matched.  */
+      bkc_idx = mctx->nbkref_ents;
+      err = get_subexp (mctx, node_idx, cur_str_idx);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	goto free_return;
+
+      /* And add the epsilon closures (which is 'new_dest_nodes') of
+	 the backreference to appropriate state_log.  */
+      DEBUG_ASSERT (dfa->nexts[node_idx] != -1);
+      for (; bkc_idx < mctx->nbkref_ents; ++bkc_idx)
+	{
+	  Idx subexp_len;
+	  re_dfastate_t *dest_state;
+	  struct re_backref_cache_entry *bkref_ent;
+	  bkref_ent = mctx->bkref_ents + bkc_idx;
+	  if (bkref_ent->node != node_idx || bkref_ent->str_idx != cur_str_idx)
+	    continue;
+	  subexp_len = bkref_ent->subexp_to - bkref_ent->subexp_from;
+	  new_dest_nodes = (subexp_len == 0
+			    ? dfa->eclosures + dfa->edests[node_idx].elems[0]
+			    : dfa->eclosures + dfa->nexts[node_idx]);
+	  dest_str_idx = (cur_str_idx + bkref_ent->subexp_to
+			  - bkref_ent->subexp_from);
+	  context = re_string_context_at (&mctx->input, dest_str_idx - 1,
+					  mctx->eflags);
+	  dest_state = mctx->state_log[dest_str_idx];
+	  prev_nelem = ((mctx->state_log[cur_str_idx] == NULL) ? 0
+			: mctx->state_log[cur_str_idx]->nodes.nelem);
+	  /* Add 'new_dest_node' to state_log.  */
+	  if (dest_state == NULL)
+	    {
+	      mctx->state_log[dest_str_idx]
+		= re_acquire_state_context (&err, dfa, new_dest_nodes,
+					    context);
+	      if (__glibc_unlikely (mctx->state_log[dest_str_idx] == NULL
+				    && err != REG_NOERROR))
+		goto free_return;
+	    }
+	  else
+	    {
+	      re_node_set dest_nodes;
+	      err = re_node_set_init_union (&dest_nodes,
+					    dest_state->entrance_nodes,
+					    new_dest_nodes);
+	      if (__glibc_unlikely (err != REG_NOERROR))
+		{
+		  re_node_set_free (&dest_nodes);
+		  goto free_return;
+		}
+	      mctx->state_log[dest_str_idx]
+		= re_acquire_state_context (&err, dfa, &dest_nodes, context);
+	      re_node_set_free (&dest_nodes);
+	      if (__glibc_unlikely (mctx->state_log[dest_str_idx] == NULL
+				    && err != REG_NOERROR))
+		goto free_return;
+	    }
+	  /* We need to check recursively if the backreference can epsilon
+	     transit.  */
+	  if (subexp_len == 0
+	      && mctx->state_log[cur_str_idx]->nodes.nelem > prev_nelem)
+	    {
+	      err = check_subexp_matching_top (mctx, new_dest_nodes,
+					       cur_str_idx);
+	      if (__glibc_unlikely (err != REG_NOERROR))
+		goto free_return;
+	      err = transit_state_bkref (mctx, new_dest_nodes);
+	      if (__glibc_unlikely (err != REG_NOERROR))
+		goto free_return;
+	    }
+	}
+    }
+  err = REG_NOERROR;
+ free_return:
+  return err;
+}
+
+/* Enumerate all the candidates which the backreference BKREF_NODE can match
+   at BKREF_STR_IDX, and register them by match_ctx_add_entry().
+   Note that we might collect inappropriate candidates here.
+   However, the cost of checking them strictly here is too high, then we
+   delay these checking for prune_impossible_nodes().  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+get_subexp (re_match_context_t *mctx, Idx bkref_node, Idx bkref_str_idx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  Idx subexp_num, sub_top_idx;
+  const char *buf = (const char *) re_string_get_buffer (&mctx->input);
+  /* Return if we have already checked BKREF_NODE at BKREF_STR_IDX.  */
+  Idx cache_idx = search_cur_bkref_entry (mctx, bkref_str_idx);
+  if (cache_idx != -1)
+    {
+      const struct re_backref_cache_entry *entry
+	= mctx->bkref_ents + cache_idx;
+      do
+	if (entry->node == bkref_node)
+	  return REG_NOERROR; /* We already checked it.  */
+      while (entry++->more);
+    }
+
+  subexp_num = dfa->nodes[bkref_node].opr.idx;
+
+  /* For each sub expression  */
+  for (sub_top_idx = 0; sub_top_idx < mctx->nsub_tops; ++sub_top_idx)
+    {
+      reg_errcode_t err;
+      re_sub_match_top_t *sub_top = mctx->sub_tops[sub_top_idx];
+      re_sub_match_last_t *sub_last;
+      Idx sub_last_idx, sl_str, bkref_str_off;
+
+      if (dfa->nodes[sub_top->node].opr.idx != subexp_num)
+	continue; /* It isn't related.  */
+
+      sl_str = sub_top->str_idx;
+      bkref_str_off = bkref_str_idx;
+      /* At first, check the last node of sub expressions we already
+	 evaluated.  */
+      for (sub_last_idx = 0; sub_last_idx < sub_top->nlasts; ++sub_last_idx)
+	{
+	  regoff_t sl_str_diff;
+	  sub_last = sub_top->lasts[sub_last_idx];
+	  sl_str_diff = sub_last->str_idx - sl_str;
+	  /* The matched string by the sub expression match with the substring
+	     at the back reference?  */
+	  if (sl_str_diff > 0)
+	    {
+	      if (__glibc_unlikely (bkref_str_off + sl_str_diff
+				    > mctx->input.valid_len))
+		{
+		  /* Not enough chars for a successful match.  */
+		  if (bkref_str_off + sl_str_diff > mctx->input.len)
+		    break;
+
+		  err = clean_state_log_if_needed (mctx,
+						   bkref_str_off
+						   + sl_str_diff);
+		  if (__glibc_unlikely (err != REG_NOERROR))
+		    return err;
+		  buf = (const char *) re_string_get_buffer (&mctx->input);
+		}
+	      if (memcmp (buf + bkref_str_off, buf + sl_str, sl_str_diff) != 0)
+		/* We don't need to search this sub expression any more.  */
+		break;
+	    }
+	  bkref_str_off += sl_str_diff;
+	  sl_str += sl_str_diff;
+	  err = get_subexp_sub (mctx, sub_top, sub_last, bkref_node,
+				bkref_str_idx);
+
+	  /* Reload buf, since the preceding call might have reallocated
+	     the buffer.  */
+	  buf = (const char *) re_string_get_buffer (&mctx->input);
+
+	  if (err == REG_NOMATCH)
+	    continue;
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return err;
+	}
+
+      if (sub_last_idx < sub_top->nlasts)
+	continue;
+      if (sub_last_idx > 0)
+	++sl_str;
+      /* Then, search for the other last nodes of the sub expression.  */
+      for (; sl_str <= bkref_str_idx; ++sl_str)
+	{
+	  Idx cls_node;
+	  regoff_t sl_str_off;
+	  const re_node_set *nodes;
+	  sl_str_off = sl_str - sub_top->str_idx;
+	  /* The matched string by the sub expression match with the substring
+	     at the back reference?  */
+	  if (sl_str_off > 0)
+	    {
+	      if (__glibc_unlikely (bkref_str_off >= mctx->input.valid_len))
+		{
+		  /* If we are at the end of the input, we cannot match.  */
+		  if (bkref_str_off >= mctx->input.len)
+		    break;
+
+		  err = extend_buffers (mctx, bkref_str_off + 1);
+		  if (__glibc_unlikely (err != REG_NOERROR))
+		    return err;
+
+		  buf = (const char *) re_string_get_buffer (&mctx->input);
+		}
+	      if (buf [bkref_str_off++] != buf[sl_str - 1])
+		break; /* We don't need to search this sub expression
+			  any more.  */
+	    }
+	  if (mctx->state_log[sl_str] == NULL)
+	    continue;
+	  /* Does this state have a ')' of the sub expression?  */
+	  nodes = &mctx->state_log[sl_str]->nodes;
+	  cls_node = find_subexp_node (dfa, nodes, subexp_num,
+				       OP_CLOSE_SUBEXP);
+	  if (cls_node == -1)
+	    continue; /* No.  */
+	  if (sub_top->path == NULL)
+	    {
+	      sub_top->path = calloc (sizeof (state_array_t),
+				      sl_str - sub_top->str_idx + 1);
+	      if (sub_top->path == NULL)
+		return REG_ESPACE;
+	    }
+	  /* Can the OP_OPEN_SUBEXP node arrive the OP_CLOSE_SUBEXP node
+	     in the current context?  */
+	  err = check_arrival (mctx, sub_top->path, sub_top->node,
+			       sub_top->str_idx, cls_node, sl_str,
+			       OP_CLOSE_SUBEXP);
+	  if (err == REG_NOMATCH)
+	      continue;
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	      return err;
+	  sub_last = match_ctx_add_sublast (sub_top, cls_node, sl_str);
+	  if (__glibc_unlikely (sub_last == NULL))
+	    return REG_ESPACE;
+	  err = get_subexp_sub (mctx, sub_top, sub_last, bkref_node,
+				bkref_str_idx);
+	  buf = (const char *) re_string_get_buffer (&mctx->input);
+	  if (err == REG_NOMATCH)
+	    continue;
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return err;
+	}
+    }
+  return REG_NOERROR;
+}
+
+/* Helper functions for get_subexp().  */
+
+/* Check SUB_LAST can arrive to the back reference BKREF_NODE at BKREF_STR.
+   If it can arrive, register the sub expression expressed with SUB_TOP
+   and SUB_LAST.  */
+
+static reg_errcode_t
+get_subexp_sub (re_match_context_t *mctx, const re_sub_match_top_t *sub_top,
+		re_sub_match_last_t *sub_last, Idx bkref_node, Idx bkref_str)
+{
+  reg_errcode_t err;
+  Idx to_idx;
+  /* Can the subexpression arrive the back reference?  */
+  err = check_arrival (mctx, &sub_last->path, sub_last->node,
+		       sub_last->str_idx, bkref_node, bkref_str,
+		       OP_OPEN_SUBEXP);
+  if (err != REG_NOERROR)
+    return err;
+  err = match_ctx_add_entry (mctx, bkref_node, bkref_str, sub_top->str_idx,
+			     sub_last->str_idx);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    return err;
+  to_idx = bkref_str + sub_last->str_idx - sub_top->str_idx;
+  return clean_state_log_if_needed (mctx, to_idx);
+}
+
+/* Find the first node which is '(' or ')' and whose index is SUBEXP_IDX.
+   Search '(' if FL_OPEN, or search ')' otherwise.
+   TODO: This function isn't efficient...
+	 Because there might be more than one nodes whose types are
+	 OP_OPEN_SUBEXP and whose index is SUBEXP_IDX, we must check all
+	 nodes.
+	 E.g. RE: (a){2}  */
+
+static Idx
+find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
+		  Idx subexp_idx, int type)
+{
+  Idx cls_idx;
+  for (cls_idx = 0; cls_idx < nodes->nelem; ++cls_idx)
+    {
+      Idx cls_node = nodes->elems[cls_idx];
+      const re_token_t *node = dfa->nodes + cls_node;
+      if (node->type == type
+	  && node->opr.idx == subexp_idx)
+	return cls_node;
+    }
+  return -1;
+}
+
+/* Check whether the node TOP_NODE at TOP_STR can arrive to the node
+   LAST_NODE at LAST_STR.  We record the path onto PATH since it will be
+   heavily reused.
+   Return REG_NOERROR if it can arrive, REG_NOMATCH if it cannot,
+   REG_ESPACE if memory is exhausted.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+check_arrival (re_match_context_t *mctx, state_array_t *path, Idx top_node,
+	       Idx top_str, Idx last_node, Idx last_str, int type)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err = REG_NOERROR;
+  Idx subexp_num, backup_cur_idx, str_idx, null_cnt;
+  re_dfastate_t *cur_state = NULL;
+  re_node_set *cur_nodes, next_nodes;
+  re_dfastate_t **backup_state_log;
+  unsigned int context;
+
+  subexp_num = dfa->nodes[top_node].opr.idx;
+  /* Extend the buffer if we need.  */
+  if (__glibc_unlikely (path->alloc < last_str + mctx->max_mb_elem_len + 1))
+    {
+      re_dfastate_t **new_array;
+      Idx old_alloc = path->alloc;
+      Idx incr_alloc = last_str + mctx->max_mb_elem_len + 1;
+      Idx new_alloc;
+      if (__glibc_unlikely (IDX_MAX - old_alloc < incr_alloc))
+	return REG_ESPACE;
+      new_alloc = old_alloc + incr_alloc;
+      if (__glibc_unlikely (SIZE_MAX / sizeof (re_dfastate_t *) < new_alloc))
+	return REG_ESPACE;
+      new_array = re_realloc (path->array, re_dfastate_t *, new_alloc);
+      if (__glibc_unlikely (new_array == NULL))
+	return REG_ESPACE;
+      path->array = new_array;
+      path->alloc = new_alloc;
+      memset (new_array + old_alloc, '\0',
+	      sizeof (re_dfastate_t *) * (path->alloc - old_alloc));
+    }
+
+  str_idx = path->next_idx ? path->next_idx : top_str;
+
+  /* Temporary modify MCTX.  */
+  backup_state_log = mctx->state_log;
+  backup_cur_idx = mctx->input.cur_idx;
+  mctx->state_log = path->array;
+  mctx->input.cur_idx = str_idx;
+
+  /* Setup initial node set.  */
+  context = re_string_context_at (&mctx->input, str_idx - 1, mctx->eflags);
+  if (str_idx == top_str)
+    {
+      err = re_node_set_init_1 (&next_nodes, top_node);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	return err;
+      err = check_arrival_expand_ecl (dfa, &next_nodes, subexp_num, type);
+      if (__glibc_unlikely (err != REG_NOERROR))
+	{
+	  re_node_set_free (&next_nodes);
+	  return err;
+	}
+    }
+  else
+    {
+      cur_state = mctx->state_log[str_idx];
+      if (cur_state && cur_state->has_backref)
+	{
+	  err = re_node_set_init_copy (&next_nodes, &cur_state->nodes);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return err;
+	}
+      else
+	re_node_set_init_empty (&next_nodes);
+    }
+  if (str_idx == top_str || (cur_state && cur_state->has_backref))
+    {
+      if (next_nodes.nelem)
+	{
+	  err = expand_bkref_cache (mctx, &next_nodes, str_idx,
+				    subexp_num, type);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    {
+	      re_node_set_free (&next_nodes);
+	      return err;
+	    }
+	}
+      cur_state = re_acquire_state_context (&err, dfa, &next_nodes, context);
+      if (__glibc_unlikely (cur_state == NULL && err != REG_NOERROR))
+	{
+	  re_node_set_free (&next_nodes);
+	  return err;
+	}
+      mctx->state_log[str_idx] = cur_state;
+    }
+
+  for (null_cnt = 0; str_idx < last_str && null_cnt <= mctx->max_mb_elem_len;)
+    {
+      re_node_set_empty (&next_nodes);
+      if (mctx->state_log[str_idx + 1])
+	{
+	  err = re_node_set_merge (&next_nodes,
+				   &mctx->state_log[str_idx + 1]->nodes);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    {
+	      re_node_set_free (&next_nodes);
+	      return err;
+	    }
+	}
+      if (cur_state)
+	{
+	  err = check_arrival_add_next_nodes (mctx, str_idx,
+					      &cur_state->non_eps_nodes,
+					      &next_nodes);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    {
+	      re_node_set_free (&next_nodes);
+	      return err;
+	    }
+	}
+      ++str_idx;
+      if (next_nodes.nelem)
+	{
+	  err = check_arrival_expand_ecl (dfa, &next_nodes, subexp_num, type);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    {
+	      re_node_set_free (&next_nodes);
+	      return err;
+	    }
+	  err = expand_bkref_cache (mctx, &next_nodes, str_idx,
+				    subexp_num, type);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    {
+	      re_node_set_free (&next_nodes);
+	      return err;
+	    }
+	}
+      context = re_string_context_at (&mctx->input, str_idx - 1, mctx->eflags);
+      cur_state = re_acquire_state_context (&err, dfa, &next_nodes, context);
+      if (__glibc_unlikely (cur_state == NULL && err != REG_NOERROR))
+	{
+	  re_node_set_free (&next_nodes);
+	  return err;
+	}
+      mctx->state_log[str_idx] = cur_state;
+      null_cnt = cur_state == NULL ? null_cnt + 1 : 0;
+    }
+  re_node_set_free (&next_nodes);
+  cur_nodes = (mctx->state_log[last_str] == NULL ? NULL
+	       : &mctx->state_log[last_str]->nodes);
+  path->next_idx = str_idx;
+
+  /* Fix MCTX.  */
+  mctx->state_log = backup_state_log;
+  mctx->input.cur_idx = backup_cur_idx;
+
+  /* Then check the current node set has the node LAST_NODE.  */
+  if (cur_nodes != NULL && re_node_set_contains (cur_nodes, last_node))
+    return REG_NOERROR;
+
+  return REG_NOMATCH;
+}
+
+/* Helper functions for check_arrival.  */
+
+/* Calculate the destination nodes of CUR_NODES at STR_IDX, and append them
+   to NEXT_NODES.
+   TODO: This function is similar to the functions transit_state*(),
+	 however this function has many additional works.
+	 Can't we unify them?  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+check_arrival_add_next_nodes (re_match_context_t *mctx, Idx str_idx,
+			      re_node_set *cur_nodes, re_node_set *next_nodes)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  bool ok;
+  Idx cur_idx;
+#ifdef RE_ENABLE_I18N
+  reg_errcode_t err = REG_NOERROR;
+#endif
+  re_node_set union_set;
+  re_node_set_init_empty (&union_set);
+  for (cur_idx = 0; cur_idx < cur_nodes->nelem; ++cur_idx)
+    {
+      int naccepted = 0;
+      Idx cur_node = cur_nodes->elems[cur_idx];
+      DEBUG_ASSERT (!IS_EPSILON_NODE (dfa->nodes[cur_node].type));
+
+#ifdef RE_ENABLE_I18N
+      /* If the node may accept "multi byte".  */
+      if (dfa->nodes[cur_node].accept_mb)
+	{
+	  naccepted = check_node_accept_bytes (dfa, cur_node, &mctx->input,
+					       str_idx);
+	  if (naccepted > 1)
+	    {
+	      re_dfastate_t *dest_state;
+	      Idx next_node = dfa->nexts[cur_node];
+	      Idx next_idx = str_idx + naccepted;
+	      dest_state = mctx->state_log[next_idx];
+	      re_node_set_empty (&union_set);
+	      if (dest_state)
+		{
+		  err = re_node_set_merge (&union_set, &dest_state->nodes);
+		  if (__glibc_unlikely (err != REG_NOERROR))
+		    {
+		      re_node_set_free (&union_set);
+		      return err;
+		    }
+		}
+	      ok = re_node_set_insert (&union_set, next_node);
+	      if (__glibc_unlikely (! ok))
+		{
+		  re_node_set_free (&union_set);
+		  return REG_ESPACE;
+		}
+	      mctx->state_log[next_idx] = re_acquire_state (&err, dfa,
+							    &union_set);
+	      if (__glibc_unlikely (mctx->state_log[next_idx] == NULL
+				    && err != REG_NOERROR))
+		{
+		  re_node_set_free (&union_set);
+		  return err;
+		}
+	    }
+	}
+#endif /* RE_ENABLE_I18N */
+      if (naccepted
+	  || check_node_accept (mctx, dfa->nodes + cur_node, str_idx))
+	{
+	  ok = re_node_set_insert (next_nodes, dfa->nexts[cur_node]);
+	  if (__glibc_unlikely (! ok))
+	    {
+	      re_node_set_free (&union_set);
+	      return REG_ESPACE;
+	    }
+	}
+    }
+  re_node_set_free (&union_set);
+  return REG_NOERROR;
+}
+
+/* For all the nodes in CUR_NODES, add the epsilon closures of them to
+   CUR_NODES, however exclude the nodes which are:
+    - inside the sub expression whose number is EX_SUBEXP, if FL_OPEN.
+    - out of the sub expression whose number is EX_SUBEXP, if !FL_OPEN.
+*/
+
+static reg_errcode_t
+check_arrival_expand_ecl (const re_dfa_t *dfa, re_node_set *cur_nodes,
+			  Idx ex_subexp, int type)
+{
+  reg_errcode_t err;
+  Idx idx, outside_node;
+  re_node_set new_nodes;
+  DEBUG_ASSERT (cur_nodes->nelem);
+  err = re_node_set_alloc (&new_nodes, cur_nodes->nelem);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    return err;
+  /* Create a new node set NEW_NODES with the nodes which are epsilon
+     closures of the node in CUR_NODES.  */
+
+  for (idx = 0; idx < cur_nodes->nelem; ++idx)
+    {
+      Idx cur_node = cur_nodes->elems[idx];
+      const re_node_set *eclosure = dfa->eclosures + cur_node;
+      outside_node = find_subexp_node (dfa, eclosure, ex_subexp, type);
+      if (outside_node == -1)
+	{
+	  /* There are no problematic nodes, just merge them.  */
+	  err = re_node_set_merge (&new_nodes, eclosure);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    {
+	      re_node_set_free (&new_nodes);
+	      return err;
+	    }
+	}
+      else
+	{
+	  /* There are problematic nodes, re-calculate incrementally.  */
+	  err = check_arrival_expand_ecl_sub (dfa, &new_nodes, cur_node,
+					      ex_subexp, type);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    {
+	      re_node_set_free (&new_nodes);
+	      return err;
+	    }
+	}
+    }
+  re_node_set_free (cur_nodes);
+  *cur_nodes = new_nodes;
+  return REG_NOERROR;
+}
+
+/* Helper function for check_arrival_expand_ecl.
+   Check incrementally the epsilon closure of TARGET, and if it isn't
+   problematic append it to DST_NODES.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+check_arrival_expand_ecl_sub (const re_dfa_t *dfa, re_node_set *dst_nodes,
+			      Idx target, Idx ex_subexp, int type)
+{
+  Idx cur_node;
+  for (cur_node = target; !re_node_set_contains (dst_nodes, cur_node);)
+    {
+      bool ok;
+
+      if (dfa->nodes[cur_node].type == type
+	  && dfa->nodes[cur_node].opr.idx == ex_subexp)
+	{
+	  if (type == OP_CLOSE_SUBEXP)
+	    {
+	      ok = re_node_set_insert (dst_nodes, cur_node);
+	      if (__glibc_unlikely (! ok))
+		return REG_ESPACE;
+	    }
+	  break;
+	}
+      ok = re_node_set_insert (dst_nodes, cur_node);
+      if (__glibc_unlikely (! ok))
+	return REG_ESPACE;
+      if (dfa->edests[cur_node].nelem == 0)
+	break;
+      if (dfa->edests[cur_node].nelem == 2)
+	{
+	  reg_errcode_t err;
+	  err = check_arrival_expand_ecl_sub (dfa, dst_nodes,
+					      dfa->edests[cur_node].elems[1],
+					      ex_subexp, type);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    return err;
+	}
+      cur_node = dfa->edests[cur_node].elems[0];
+    }
+  return REG_NOERROR;
+}
+
+
+/* For all the back references in the current state, calculate the
+   destination of the back references by the appropriate entry
+   in MCTX->BKREF_ENTS.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+expand_bkref_cache (re_match_context_t *mctx, re_node_set *cur_nodes,
+		    Idx cur_str, Idx subexp_num, int type)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err;
+  Idx cache_idx_start = search_cur_bkref_entry (mctx, cur_str);
+  struct re_backref_cache_entry *ent;
+
+  if (cache_idx_start == -1)
+    return REG_NOERROR;
+
+ restart:
+  ent = mctx->bkref_ents + cache_idx_start;
+  do
+    {
+      Idx to_idx, next_node;
+
+      /* Is this entry ENT is appropriate?  */
+      if (!re_node_set_contains (cur_nodes, ent->node))
+	continue; /* No.  */
+
+      to_idx = cur_str + ent->subexp_to - ent->subexp_from;
+      /* Calculate the destination of the back reference, and append it
+	 to MCTX->STATE_LOG.  */
+      if (to_idx == cur_str)
+	{
+	  /* The backreference did epsilon transit, we must re-check all the
+	     node in the current state.  */
+	  re_node_set new_dests;
+	  reg_errcode_t err2, err3;
+	  next_node = dfa->edests[ent->node].elems[0];
+	  if (re_node_set_contains (cur_nodes, next_node))
+	    continue;
+	  err = re_node_set_init_1 (&new_dests, next_node);
+	  err2 = check_arrival_expand_ecl (dfa, &new_dests, subexp_num, type);
+	  err3 = re_node_set_merge (cur_nodes, &new_dests);
+	  re_node_set_free (&new_dests);
+	  if (__glibc_unlikely (err != REG_NOERROR || err2 != REG_NOERROR
+				|| err3 != REG_NOERROR))
+	    {
+	      err = (err != REG_NOERROR ? err
+		     : (err2 != REG_NOERROR ? err2 : err3));
+	      return err;
+	    }
+	  /* TODO: It is still inefficient...  */
+	  goto restart;
+	}
+      else
+	{
+	  re_node_set union_set;
+	  next_node = dfa->nexts[ent->node];
+	  if (mctx->state_log[to_idx])
+	    {
+	      bool ok;
+	      if (re_node_set_contains (&mctx->state_log[to_idx]->nodes,
+					next_node))
+		continue;
+	      err = re_node_set_init_copy (&union_set,
+					   &mctx->state_log[to_idx]->nodes);
+	      ok = re_node_set_insert (&union_set, next_node);
+	      if (__glibc_unlikely (err != REG_NOERROR || ! ok))
+		{
+		  re_node_set_free (&union_set);
+		  err = err != REG_NOERROR ? err : REG_ESPACE;
+		  return err;
+		}
+	    }
+	  else
+	    {
+	      err = re_node_set_init_1 (&union_set, next_node);
+	      if (__glibc_unlikely (err != REG_NOERROR))
+		return err;
+	    }
+	  mctx->state_log[to_idx] = re_acquire_state (&err, dfa, &union_set);
+	  re_node_set_free (&union_set);
+	  if (__glibc_unlikely (mctx->state_log[to_idx] == NULL
+				&& err != REG_NOERROR))
+	    return err;
+	}
+    }
+  while (ent++->more);
+  return REG_NOERROR;
+}
+
+/* Build transition table for the state.
+   Return true if successful.  */
+
+static bool __attribute_noinline__
+build_trtable (const re_dfa_t *dfa, re_dfastate_t *state)
+{
+  reg_errcode_t err;
+  Idx i, j;
+  int ch;
+  bool need_word_trtable = false;
+  bitset_word_t elem, mask;
+  Idx ndests; /* Number of the destination states from 'state'.  */
+  re_dfastate_t **trtable;
+  re_dfastate_t *dest_states[SBC_MAX];
+  re_dfastate_t *dest_states_word[SBC_MAX];
+  re_dfastate_t *dest_states_nl[SBC_MAX];
+  re_node_set follows;
+  bitset_t acceptable;
+
+  /* We build DFA states which corresponds to the destination nodes
+     from 'state'.  'dests_node[i]' represents the nodes which i-th
+     destination state contains, and 'dests_ch[i]' represents the
+     characters which i-th destination state accepts.  */
+  re_node_set dests_node[SBC_MAX];
+  bitset_t dests_ch[SBC_MAX];
+
+  /* Initialize transition table.  */
+  state->word_trtable = state->trtable = NULL;
+
+  /* At first, group all nodes belonging to 'state' into several
+     destinations.  */
+  ndests = group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch);
+  if (__glibc_unlikely (ndests <= 0))
+    {
+      /* Return false in case of an error, true otherwise.  */
+      if (ndests == 0)
+	{
+	  state->trtable = (re_dfastate_t **)
+	    calloc (sizeof (re_dfastate_t *), SBC_MAX);
+          if (__glibc_unlikely (state->trtable == NULL))
+            return false;
+	  return true;
+	}
+      return false;
+    }
+
+  err = re_node_set_alloc (&follows, ndests + 1);
+  if (__glibc_unlikely (err != REG_NOERROR))
+    {
+    out_free:
+      re_node_set_free (&follows);
+      for (i = 0; i < ndests; ++i)
+	re_node_set_free (dests_node + i);
+      return false;
+    }
+
+  bitset_empty (acceptable);
+
+  /* Then build the states for all destinations.  */
+  for (i = 0; i < ndests; ++i)
+    {
+      Idx next_node;
+      re_node_set_empty (&follows);
+      /* Merge the follows of this destination states.  */
+      for (j = 0; j < dests_node[i].nelem; ++j)
+	{
+	  next_node = dfa->nexts[dests_node[i].elems[j]];
+	  if (next_node != -1)
+	    {
+	      err = re_node_set_merge (&follows, dfa->eclosures + next_node);
+	      if (__glibc_unlikely (err != REG_NOERROR))
+		goto out_free;
+	    }
+	}
+      dest_states[i] = re_acquire_state_context (&err, dfa, &follows, 0);
+      if (__glibc_unlikely (dest_states[i] == NULL && err != REG_NOERROR))
+	goto out_free;
+      /* If the new state has context constraint,
+	 build appropriate states for these contexts.  */
+      if (dest_states[i]->has_constraint)
+	{
+	  dest_states_word[i] = re_acquire_state_context (&err, dfa, &follows,
+							  CONTEXT_WORD);
+	  if (__glibc_unlikely (dest_states_word[i] == NULL
+				&& err != REG_NOERROR))
+	    goto out_free;
+
+	  if (dest_states[i] != dest_states_word[i] && dfa->mb_cur_max > 1)
+	    need_word_trtable = true;
+
+	  dest_states_nl[i] = re_acquire_state_context (&err, dfa, &follows,
+							CONTEXT_NEWLINE);
+	  if (__glibc_unlikely (dest_states_nl[i] == NULL && err != REG_NOERROR))
+	    goto out_free;
+	}
+      else
+	{
+	  dest_states_word[i] = dest_states[i];
+	  dest_states_nl[i] = dest_states[i];
+	}
+      bitset_merge (acceptable, dests_ch[i]);
+    }
+
+  if (!__glibc_unlikely (need_word_trtable))
+    {
+      /* We don't care about whether the following character is a word
+	 character, or we are in a single-byte character set so we can
+	 discern by looking at the character code: allocate a
+	 256-entry transition table.  */
+      trtable = state->trtable =
+	(re_dfastate_t **) calloc (sizeof (re_dfastate_t *), SBC_MAX);
+      if (__glibc_unlikely (trtable == NULL))
+	goto out_free;
+
+      /* For all characters ch...:  */
+      for (i = 0; i < BITSET_WORDS; ++i)
+	for (ch = i * BITSET_WORD_BITS, elem = acceptable[i], mask = 1;
+	     elem;
+	     mask <<= 1, elem >>= 1, ++ch)
+	  if (__glibc_unlikely (elem & 1))
+	    {
+	      /* There must be exactly one destination which accepts
+		 character ch.  See group_nodes_into_DFAstates.  */
+	      for (j = 0; (dests_ch[j][i] & mask) == 0; ++j)
+		;
+
+	      /* j-th destination accepts the word character ch.  */
+	      if (dfa->word_char[i] & mask)
+		trtable[ch] = dest_states_word[j];
+	      else
+		trtable[ch] = dest_states[j];
+	    }
+    }
+  else
+    {
+      /* We care about whether the following character is a word
+	 character, and we are in a multi-byte character set: discern
+	 by looking at the character code: build two 256-entry
+	 transition tables, one starting at trtable[0] and one
+	 starting at trtable[SBC_MAX].  */
+      trtable = state->word_trtable =
+	(re_dfastate_t **) calloc (sizeof (re_dfastate_t *), 2 * SBC_MAX);
+      if (__glibc_unlikely (trtable == NULL))
+	goto out_free;
+
+      /* For all characters ch...:  */
+      for (i = 0; i < BITSET_WORDS; ++i)
+	for (ch = i * BITSET_WORD_BITS, elem = acceptable[i], mask = 1;
+	     elem;
+	     mask <<= 1, elem >>= 1, ++ch)
+	  if (__glibc_unlikely (elem & 1))
+	    {
+	      /* There must be exactly one destination which accepts
+		 character ch.  See group_nodes_into_DFAstates.  */
+	      for (j = 0; (dests_ch[j][i] & mask) == 0; ++j)
+		;
+
+	      /* j-th destination accepts the word character ch.  */
+	      trtable[ch] = dest_states[j];
+	      trtable[ch + SBC_MAX] = dest_states_word[j];
+	    }
+    }
+
+  /* new line */
+  if (bitset_contain (acceptable, NEWLINE_CHAR))
+    {
+      /* The current state accepts newline character.  */
+      for (j = 0; j < ndests; ++j)
+	if (bitset_contain (dests_ch[j], NEWLINE_CHAR))
+	  {
+	    /* k-th destination accepts newline character.  */
+	    trtable[NEWLINE_CHAR] = dest_states_nl[j];
+	    if (need_word_trtable)
+	      trtable[NEWLINE_CHAR + SBC_MAX] = dest_states_nl[j];
+	    /* There must be only one destination which accepts
+	       newline.  See group_nodes_into_DFAstates.  */
+	    break;
+	  }
+    }
+
+  re_node_set_free (&follows);
+  for (i = 0; i < ndests; ++i)
+    re_node_set_free (dests_node + i);
+  return true;
+}
+
+/* Group all nodes belonging to STATE into several destinations.
+   Then for all destinations, set the nodes belonging to the destination
+   to DESTS_NODE[i] and set the characters accepted by the destination
+   to DEST_CH[i].  Return the number of destinations if successful,
+   -1 on internal error.  */
+
+static Idx
+group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
+			    re_node_set *dests_node, bitset_t *dests_ch)
+{
+  reg_errcode_t err;
+  bool ok;
+  Idx i, j, k;
+  Idx ndests; /* Number of the destinations from 'state'.  */
+  bitset_t accepts; /* Characters a node can accept.  */
+  const re_node_set *cur_nodes = &state->nodes;
+  bitset_empty (accepts);
+  ndests = 0;
+
+  /* For all the nodes belonging to 'state',  */
+  for (i = 0; i < cur_nodes->nelem; ++i)
+    {
+      re_token_t *node = &dfa->nodes[cur_nodes->elems[i]];
+      re_token_type_t type = node->type;
+      unsigned int constraint = node->constraint;
+
+      /* Enumerate all single byte character this node can accept.  */
+      if (type == CHARACTER)
+	bitset_set (accepts, node->opr.c);
+      else if (type == SIMPLE_BRACKET)
+	{
+	  bitset_merge (accepts, node->opr.sbcset);
+	}
+      else if (type == OP_PERIOD)
+	{
+#ifdef RE_ENABLE_I18N
+	  if (dfa->mb_cur_max > 1)
+	    bitset_merge (accepts, dfa->sb_char);
+	  else
+#endif
+	    bitset_set_all (accepts);
+	  if (!(dfa->syntax & RE_DOT_NEWLINE))
+	    bitset_clear (accepts, '\n');
+	  if (dfa->syntax & RE_DOT_NOT_NULL)
+	    bitset_clear (accepts, '\0');
+	}
+#ifdef RE_ENABLE_I18N
+      else if (type == OP_UTF8_PERIOD)
+	{
+	  if (ASCII_CHARS % BITSET_WORD_BITS == 0)
+	    memset (accepts, -1, ASCII_CHARS / CHAR_BIT);
+	  else
+	    bitset_merge (accepts, utf8_sb_map);
+	  if (!(dfa->syntax & RE_DOT_NEWLINE))
+	    bitset_clear (accepts, '\n');
+	  if (dfa->syntax & RE_DOT_NOT_NULL)
+	    bitset_clear (accepts, '\0');
+	}
+#endif
+      else
+	continue;
+
+      /* Check the 'accepts' and sift the characters which are not
+	 match it the context.  */
+      if (constraint)
+	{
+	  if (constraint & NEXT_NEWLINE_CONSTRAINT)
+	    {
+	      bool accepts_newline = bitset_contain (accepts, NEWLINE_CHAR);
+	      bitset_empty (accepts);
+	      if (accepts_newline)
+		bitset_set (accepts, NEWLINE_CHAR);
+	      else
+		continue;
+	    }
+	  if (constraint & NEXT_ENDBUF_CONSTRAINT)
+	    {
+	      bitset_empty (accepts);
+	      continue;
+	    }
+
+	  if (constraint & NEXT_WORD_CONSTRAINT)
+	    {
+	      bitset_word_t any_set = 0;
+	      if (type == CHARACTER && !node->word_char)
+		{
+		  bitset_empty (accepts);
+		  continue;
+		}
+#ifdef RE_ENABLE_I18N
+	      if (dfa->mb_cur_max > 1)
+		for (j = 0; j < BITSET_WORDS; ++j)
+		  any_set |= (accepts[j] &= (dfa->word_char[j] | ~dfa->sb_char[j]));
+	      else
+#endif
+		for (j = 0; j < BITSET_WORDS; ++j)
+		  any_set |= (accepts[j] &= dfa->word_char[j]);
+	      if (!any_set)
+		continue;
+	    }
+	  if (constraint & NEXT_NOTWORD_CONSTRAINT)
+	    {
+	      bitset_word_t any_set = 0;
+	      if (type == CHARACTER && node->word_char)
+		{
+		  bitset_empty (accepts);
+		  continue;
+		}
+#ifdef RE_ENABLE_I18N
+	      if (dfa->mb_cur_max > 1)
+		for (j = 0; j < BITSET_WORDS; ++j)
+		  any_set |= (accepts[j] &= ~(dfa->word_char[j] & dfa->sb_char[j]));
+	      else
+#endif
+		for (j = 0; j < BITSET_WORDS; ++j)
+		  any_set |= (accepts[j] &= ~dfa->word_char[j]);
+	      if (!any_set)
+		continue;
+	    }
+	}
+
+      /* Then divide 'accepts' into DFA states, or create a new
+	 state.  Above, we make sure that accepts is not empty.  */
+      for (j = 0; j < ndests; ++j)
+	{
+	  bitset_t intersec; /* Intersection sets, see below.  */
+	  bitset_t remains;
+	  /* Flags, see below.  */
+	  bitset_word_t has_intersec, not_subset, not_consumed;
+
+	  /* Optimization, skip if this state doesn't accept the character.  */
+	  if (type == CHARACTER && !bitset_contain (dests_ch[j], node->opr.c))
+	    continue;
+
+	  /* Enumerate the intersection set of this state and 'accepts'.  */
+	  has_intersec = 0;
+	  for (k = 0; k < BITSET_WORDS; ++k)
+	    has_intersec |= intersec[k] = accepts[k] & dests_ch[j][k];
+	  /* And skip if the intersection set is empty.  */
+	  if (!has_intersec)
+	    continue;
+
+	  /* Then check if this state is a subset of 'accepts'.  */
+	  not_subset = not_consumed = 0;
+	  for (k = 0; k < BITSET_WORDS; ++k)
+	    {
+	      not_subset |= remains[k] = ~accepts[k] & dests_ch[j][k];
+	      not_consumed |= accepts[k] = accepts[k] & ~dests_ch[j][k];
+	    }
+
+	  /* If this state isn't a subset of 'accepts', create a
+	     new group state, which has the 'remains'. */
+	  if (not_subset)
+	    {
+	      bitset_copy (dests_ch[ndests], remains);
+	      bitset_copy (dests_ch[j], intersec);
+	      err = re_node_set_init_copy (dests_node + ndests, &dests_node[j]);
+	      if (__glibc_unlikely (err != REG_NOERROR))
+		goto error_return;
+	      ++ndests;
+	    }
+
+	  /* Put the position in the current group. */
+	  ok = re_node_set_insert (&dests_node[j], cur_nodes->elems[i]);
+	  if (__glibc_unlikely (! ok))
+	    goto error_return;
+
+	  /* If all characters are consumed, go to next node. */
+	  if (!not_consumed)
+	    break;
+	}
+      /* Some characters remain, create a new group. */
+      if (j == ndests)
+	{
+	  bitset_copy (dests_ch[ndests], accepts);
+	  err = re_node_set_init_1 (dests_node + ndests, cur_nodes->elems[i]);
+	  if (__glibc_unlikely (err != REG_NOERROR))
+	    goto error_return;
+	  ++ndests;
+	  bitset_empty (accepts);
+	}
+    }
+  assume (ndests <= SBC_MAX);
+  return ndests;
+ error_return:
+  for (j = 0; j < ndests; ++j)
+    re_node_set_free (dests_node + j);
+  return -1;
+}
+
+#ifdef RE_ENABLE_I18N
+/* Check how many bytes the node 'dfa->nodes[node_idx]' accepts.
+   Return the number of the bytes the node accepts.
+   STR_IDX is the current index of the input string.
+
+   This function handles the nodes which can accept one character, or
+   one collating element like '.', '[a-z]', opposite to the other nodes
+   can only accept one byte.  */
+
+# ifdef _LIBC
+#  include <locale/weight.h>
+# endif
+
+static int
+check_node_accept_bytes (const re_dfa_t *dfa, Idx node_idx,
+			 const re_string_t *input, Idx str_idx)
+{
+  const re_token_t *node = dfa->nodes + node_idx;
+  int char_len, elem_len;
+  Idx i;
+
+  if (__glibc_unlikely (node->type == OP_UTF8_PERIOD))
+    {
+      unsigned char c = re_string_byte_at (input, str_idx), d;
+      if (__glibc_likely (c < 0xc2))
+	return 0;
+
+      if (str_idx + 2 > input->len)
+	return 0;
+
+      d = re_string_byte_at (input, str_idx + 1);
+      if (c < 0xe0)
+	return (d < 0x80 || d > 0xbf) ? 0 : 2;
+      else if (c < 0xf0)
+	{
+	  char_len = 3;
+	  if (c == 0xe0 && d < 0xa0)
+	    return 0;
+	}
+      else if (c < 0xf8)
+	{
+	  char_len = 4;
+	  if (c == 0xf0 && d < 0x90)
+	    return 0;
+	}
+      else if (c < 0xfc)
+	{
+	  char_len = 5;
+	  if (c == 0xf8 && d < 0x88)
+	    return 0;
+	}
+      else if (c < 0xfe)
+	{
+	  char_len = 6;
+	  if (c == 0xfc && d < 0x84)
+	    return 0;
+	}
+      else
+	return 0;
+
+      if (str_idx + char_len > input->len)
+	return 0;
+
+      for (i = 1; i < char_len; ++i)
+	{
+	  d = re_string_byte_at (input, str_idx + i);
+	  if (d < 0x80 || d > 0xbf)
+	    return 0;
+	}
+      return char_len;
+    }
+
+  char_len = re_string_char_size_at (input, str_idx);
+  if (node->type == OP_PERIOD)
+    {
+      if (char_len <= 1)
+	return 0;
+      /* FIXME: I don't think this if is needed, as both '\n'
+	 and '\0' are char_len == 1.  */
+      /* '.' accepts any one character except the following two cases.  */
+      if ((!(dfa->syntax & RE_DOT_NEWLINE)
+	   && re_string_byte_at (input, str_idx) == '\n')
+	  || ((dfa->syntax & RE_DOT_NOT_NULL)
+	      && re_string_byte_at (input, str_idx) == '\0'))
+	return 0;
+      return char_len;
+    }
+
+  elem_len = re_string_elem_size_at (input, str_idx);
+  if ((elem_len <= 1 && char_len <= 1) || char_len == 0)
+    return 0;
+
+  if (node->type == COMPLEX_BRACKET)
+    {
+      const re_charset_t *cset = node->opr.mbcset;
+# ifdef _LIBC
+      const unsigned char *pin
+	= ((const unsigned char *) re_string_get_buffer (input) + str_idx);
+      Idx j;
+      uint32_t nrules;
+# endif /* _LIBC */
+      int match_len = 0;
+      wchar_t wc = ((cset->nranges || cset->nchar_classes || cset->nmbchars)
+		    ? re_string_wchar_at (input, str_idx) : 0);
+
+      /* match with multibyte character?  */
+      for (i = 0; i < cset->nmbchars; ++i)
+	if (wc == cset->mbchars[i])
+	  {
+	    match_len = char_len;
+	    goto check_node_accept_bytes_match;
+	  }
+      /* match with character_class?  */
+      for (i = 0; i < cset->nchar_classes; ++i)
+	{
+	  wctype_t wt = cset->char_classes[i];
+	  if (__iswctype (wc, wt))
+	    {
+	      match_len = char_len;
+	      goto check_node_accept_bytes_match;
+	    }
+	}
+
+# ifdef _LIBC
+      nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
+      if (nrules != 0)
+	{
+	  unsigned int in_collseq = 0;
+	  const int32_t *table, *indirect;
+	  const unsigned char *weights, *extra;
+	  const char *collseqwc;
+
+	  /* match with collating_symbol?  */
+	  if (cset->ncoll_syms)
+	    extra = (const unsigned char *)
+	      _NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB);
+	  for (i = 0; i < cset->ncoll_syms; ++i)
+	    {
+	      const unsigned char *coll_sym = extra + cset->coll_syms[i];
+	      /* Compare the length of input collating element and
+		 the length of current collating element.  */
+	      if (*coll_sym != elem_len)
+		continue;
+	      /* Compare each bytes.  */
+	      for (j = 0; j < *coll_sym; j++)
+		if (pin[j] != coll_sym[1 + j])
+		  break;
+	      if (j == *coll_sym)
+		{
+		  /* Match if every bytes is equal.  */
+		  match_len = j;
+		  goto check_node_accept_bytes_match;
+		}
+	    }
+
+	  if (cset->nranges)
+	    {
+	      if (elem_len <= char_len)
+		{
+		  collseqwc = _NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQWC);
+		  in_collseq = __collseq_table_lookup (collseqwc, wc);
+		}
+	      else
+		in_collseq = find_collation_sequence_value (pin, elem_len);
+	    }
+	  /* match with range expression?  */
+	  /* FIXME: Implement rational ranges here, too.  */
+	  for (i = 0; i < cset->nranges; ++i)
+	    if (cset->range_starts[i] <= in_collseq
+		&& in_collseq <= cset->range_ends[i])
+	      {
+		match_len = elem_len;
+		goto check_node_accept_bytes_match;
+	      }
+
+	  /* match with equivalence_class?  */
+	  if (cset->nequiv_classes)
+	    {
+	      const unsigned char *cp = pin;
+	      table = (const int32_t *)
+		_NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
+	      weights = (const unsigned char *)
+		_NL_CURRENT (LC_COLLATE, _NL_COLLATE_WEIGHTMB);
+	      extra = (const unsigned char *)
+		_NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAMB);
+	      indirect = (const int32_t *)
+		_NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTMB);
+	      int32_t idx = findidx (table, indirect, extra, &cp, elem_len);
+	      int32_t rule = idx >> 24;
+	      idx &= 0xffffff;
+	      if (idx > 0)
+		{
+		  size_t weight_len = weights[idx];
+		  for (i = 0; i < cset->nequiv_classes; ++i)
+		    {
+		      int32_t equiv_class_idx = cset->equiv_classes[i];
+		      int32_t equiv_class_rule = equiv_class_idx >> 24;
+		      equiv_class_idx &= 0xffffff;
+		      if (weights[equiv_class_idx] == weight_len
+			  && equiv_class_rule == rule
+			  && memcmp (weights + idx + 1,
+				     weights + equiv_class_idx + 1,
+				     weight_len) == 0)
+			{
+			  match_len = elem_len;
+			  goto check_node_accept_bytes_match;
+			}
+		    }
+		}
+	    }
+	}
+      else
+# endif /* _LIBC */
+	{
+	  /* match with range expression?  */
+	  for (i = 0; i < cset->nranges; ++i)
+	    {
+	      if (cset->range_starts[i] <= wc && wc <= cset->range_ends[i])
+		{
+		  match_len = char_len;
+		  goto check_node_accept_bytes_match;
+		}
+	    }
+	}
+    check_node_accept_bytes_match:
+      if (!cset->non_match)
+	return match_len;
+      else
+	{
+	  if (match_len > 0)
+	    return 0;
+	  else
+	    return (elem_len > char_len) ? elem_len : char_len;
+	}
+    }
+  return 0;
+}
+
+# ifdef _LIBC
+static unsigned int
+find_collation_sequence_value (const unsigned char *mbs, size_t mbs_len)
+{
+  uint32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
+  if (nrules == 0)
+    {
+      if (mbs_len == 1)
+	{
+	  /* No valid character.  Match it as a single byte character.  */
+	  const unsigned char *collseq = (const unsigned char *)
+	    _NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQMB);
+	  return collseq[mbs[0]];
+	}
+      return UINT_MAX;
+    }
+  else
+    {
+      int32_t idx;
+      const unsigned char *extra = (const unsigned char *)
+	_NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB);
+      int32_t extrasize = (const unsigned char *)
+	_NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB + 1) - extra;
+
+      for (idx = 0; idx < extrasize;)
+	{
+	  int mbs_cnt;
+	  bool found = false;
+	  int32_t elem_mbs_len;
+	  /* Skip the name of collating element name.  */
+	  idx = idx + extra[idx] + 1;
+	  elem_mbs_len = extra[idx++];
+	  if (mbs_len == elem_mbs_len)
+	    {
+	      for (mbs_cnt = 0; mbs_cnt < elem_mbs_len; ++mbs_cnt)
+		if (extra[idx + mbs_cnt] != mbs[mbs_cnt])
+		  break;
+	      if (mbs_cnt == elem_mbs_len)
+		/* Found the entry.  */
+		found = true;
+	    }
+	  /* Skip the byte sequence of the collating element.  */
+	  idx += elem_mbs_len;
+	  /* Adjust for the alignment.  */
+	  idx = (idx + 3) & ~3;
+	  /* Skip the collation sequence value.  */
+	  idx += sizeof (uint32_t);
+	  /* Skip the wide char sequence of the collating element.  */
+	  idx = idx + sizeof (uint32_t) * (*(int32_t *) (extra + idx) + 1);
+	  /* If we found the entry, return the sequence value.  */
+	  if (found)
+	    return *(uint32_t *) (extra + idx);
+	  /* Skip the collation sequence value.  */
+	  idx += sizeof (uint32_t);
+	}
+      return UINT_MAX;
+    }
+}
+# endif /* _LIBC */
+#endif /* RE_ENABLE_I18N */
+
+/* Check whether the node accepts the byte which is IDX-th
+   byte of the INPUT.  */
+
+static bool
+check_node_accept (const re_match_context_t *mctx, const re_token_t *node,
+		   Idx idx)
+{
+  unsigned char ch;
+  ch = re_string_byte_at (&mctx->input, idx);
+  switch (node->type)
+    {
+    case CHARACTER:
+      if (node->opr.c != ch)
+        return false;
+      break;
+
+    case SIMPLE_BRACKET:
+      if (!bitset_contain (node->opr.sbcset, ch))
+        return false;
+      break;
+
+#ifdef RE_ENABLE_I18N
+    case OP_UTF8_PERIOD:
+      if (ch >= ASCII_CHARS)
+        return false;
+      FALLTHROUGH;
+#endif
+    case OP_PERIOD:
+      if ((ch == '\n' && !(mctx->dfa->syntax & RE_DOT_NEWLINE))
+	  || (ch == '\0' && (mctx->dfa->syntax & RE_DOT_NOT_NULL)))
+	return false;
+      break;
+
+    default:
+      return false;
+    }
+
+  if (node->constraint)
+    {
+      /* The node has constraints.  Check whether the current context
+	 satisfies the constraints.  */
+      unsigned int context = re_string_context_at (&mctx->input, idx,
+						   mctx->eflags);
+      if (NOT_SATISFY_NEXT_CONSTRAINT (node->constraint, context))
+	return false;
+    }
+
+  return true;
+}
+
+/* Extend the buffers, if the buffers have run out.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+extend_buffers (re_match_context_t *mctx, int min_len)
+{
+  reg_errcode_t ret;
+  re_string_t *pstr = &mctx->input;
+
+  /* Avoid overflow.  */
+  if (__glibc_unlikely (MIN (IDX_MAX, SIZE_MAX / sizeof (re_dfastate_t *)) / 2
+			<= pstr->bufs_len))
+    return REG_ESPACE;
+
+  /* Double the lengths of the buffers, but allocate at least MIN_LEN.  */
+  ret = re_string_realloc_buffers (pstr,
+				   MAX (min_len,
+					MIN (pstr->len, pstr->bufs_len * 2)));
+  if (__glibc_unlikely (ret != REG_NOERROR))
+    return ret;
+
+  if (mctx->state_log != NULL)
+    {
+      /* And double the length of state_log.  */
+      /* XXX We have no indication of the size of this buffer.  If this
+	 allocation fail we have no indication that the state_log array
+	 does not have the right size.  */
+      re_dfastate_t **new_array = re_realloc (mctx->state_log, re_dfastate_t *,
+					      pstr->bufs_len + 1);
+      if (__glibc_unlikely (new_array == NULL))
+	return REG_ESPACE;
+      mctx->state_log = new_array;
+    }
+
+  /* Then reconstruct the buffers.  */
+  if (pstr->icase)
+    {
+#ifdef RE_ENABLE_I18N
+      if (pstr->mb_cur_max > 1)
+	{
+	  ret = build_wcs_upper_buffer (pstr);
+	  if (__glibc_unlikely (ret != REG_NOERROR))
+	    return ret;
+	}
+      else
+#endif /* RE_ENABLE_I18N  */
+	build_upper_buffer (pstr);
+    }
+  else
+    {
+#ifdef RE_ENABLE_I18N
+      if (pstr->mb_cur_max > 1)
+	build_wcs_buffer (pstr);
+      else
+#endif /* RE_ENABLE_I18N  */
+	{
+	  if (pstr->trans != NULL)
+	    re_string_translate_buffer (pstr);
+	}
+    }
+  return REG_NOERROR;
+}
+
+
+/* Functions for matching context.  */
+
+/* Initialize MCTX.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+match_ctx_init (re_match_context_t *mctx, int eflags, Idx n)
+{
+  mctx->eflags = eflags;
+  mctx->match_last = -1;
+  if (n > 0)
+    {
+      /* Avoid overflow.  */
+      size_t max_object_size =
+	MAX (sizeof (struct re_backref_cache_entry),
+	     sizeof (re_sub_match_top_t *));
+      if (__glibc_unlikely (MIN (IDX_MAX, SIZE_MAX / max_object_size) < n))
+	return REG_ESPACE;
+
+      mctx->bkref_ents = re_malloc (struct re_backref_cache_entry, n);
+      mctx->sub_tops = re_malloc (re_sub_match_top_t *, n);
+      if (__glibc_unlikely (mctx->bkref_ents == NULL || mctx->sub_tops == NULL))
+	return REG_ESPACE;
+    }
+  /* Already zero-ed by the caller.
+     else
+       mctx->bkref_ents = NULL;
+     mctx->nbkref_ents = 0;
+     mctx->nsub_tops = 0;  */
+  mctx->abkref_ents = n;
+  mctx->max_mb_elem_len = 1;
+  mctx->asub_tops = n;
+  return REG_NOERROR;
+}
+
+/* Clean the entries which depend on the current input in MCTX.
+   This function must be invoked when the matcher changes the start index
+   of the input, or changes the input string.  */
+
+static void
+match_ctx_clean (re_match_context_t *mctx)
+{
+  Idx st_idx;
+  for (st_idx = 0; st_idx < mctx->nsub_tops; ++st_idx)
+    {
+      Idx sl_idx;
+      re_sub_match_top_t *top = mctx->sub_tops[st_idx];
+      for (sl_idx = 0; sl_idx < top->nlasts; ++sl_idx)
+	{
+	  re_sub_match_last_t *last = top->lasts[sl_idx];
+	  re_free (last->path.array);
+	  re_free (last);
+	}
+      re_free (top->lasts);
+      if (top->path)
+	{
+	  re_free (top->path->array);
+	  re_free (top->path);
+	}
+      re_free (top);
+    }
+
+  mctx->nsub_tops = 0;
+  mctx->nbkref_ents = 0;
+}
+
+/* Free all the memory associated with MCTX.  */
+
+static void
+match_ctx_free (re_match_context_t *mctx)
+{
+  /* First, free all the memory associated with MCTX->SUB_TOPS.  */
+  match_ctx_clean (mctx);
+  re_free (mctx->sub_tops);
+  re_free (mctx->bkref_ents);
+}
+
+/* Add a new backreference entry to MCTX.
+   Note that we assume that caller never call this function with duplicate
+   entry, and call with STR_IDX which isn't smaller than any existing entry.
+*/
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+match_ctx_add_entry (re_match_context_t *mctx, Idx node, Idx str_idx, Idx from,
+		     Idx to)
+{
+  if (mctx->nbkref_ents >= mctx->abkref_ents)
+    {
+      struct re_backref_cache_entry* new_entry;
+      new_entry = re_realloc (mctx->bkref_ents, struct re_backref_cache_entry,
+			      mctx->abkref_ents * 2);
+      if (__glibc_unlikely (new_entry == NULL))
+	{
+	  re_free (mctx->bkref_ents);
+	  return REG_ESPACE;
+	}
+      mctx->bkref_ents = new_entry;
+      memset (mctx->bkref_ents + mctx->nbkref_ents, '\0',
+	      sizeof (struct re_backref_cache_entry) * mctx->abkref_ents);
+      mctx->abkref_ents *= 2;
+    }
+  if (mctx->nbkref_ents > 0
+      && mctx->bkref_ents[mctx->nbkref_ents - 1].str_idx == str_idx)
+    mctx->bkref_ents[mctx->nbkref_ents - 1].more = 1;
+
+  mctx->bkref_ents[mctx->nbkref_ents].node = node;
+  mctx->bkref_ents[mctx->nbkref_ents].str_idx = str_idx;
+  mctx->bkref_ents[mctx->nbkref_ents].subexp_from = from;
+  mctx->bkref_ents[mctx->nbkref_ents].subexp_to = to;
+
+  /* This is a cache that saves negative results of check_dst_limits_calc_pos.
+     If bit N is clear, means that this entry won't epsilon-transition to
+     an OP_OPEN_SUBEXP or OP_CLOSE_SUBEXP for the N+1-th subexpression.  If
+     it is set, check_dst_limits_calc_pos_1 will recurse and try to find one
+     such node.
+
+     A backreference does not epsilon-transition unless it is empty, so set
+     to all zeros if FROM != TO.  */
+  mctx->bkref_ents[mctx->nbkref_ents].eps_reachable_subexps_map
+    = (from == to ? -1 : 0);
+
+  mctx->bkref_ents[mctx->nbkref_ents++].more = 0;
+  if (mctx->max_mb_elem_len < to - from)
+    mctx->max_mb_elem_len = to - from;
+  return REG_NOERROR;
+}
+
+/* Return the first entry with the same str_idx, or -1 if none is
+   found.  Note that MCTX->BKREF_ENTS is already sorted by MCTX->STR_IDX.  */
+
+static Idx
+search_cur_bkref_entry (const re_match_context_t *mctx, Idx str_idx)
+{
+  Idx left, right, mid, last;
+  last = right = mctx->nbkref_ents;
+  for (left = 0; left < right;)
+    {
+      mid = (left + right) / 2;
+      if (mctx->bkref_ents[mid].str_idx < str_idx)
+	left = mid + 1;
+      else
+	right = mid;
+    }
+  if (left < last && mctx->bkref_ents[left].str_idx == str_idx)
+    return left;
+  else
+    return -1;
+}
+
+/* Register the node NODE, whose type is OP_OPEN_SUBEXP, and which matches
+   at STR_IDX.  */
+
+static reg_errcode_t
+__attribute_warn_unused_result__
+match_ctx_add_subtop (re_match_context_t *mctx, Idx node, Idx str_idx)
+{
+  DEBUG_ASSERT (mctx->sub_tops != NULL);
+  DEBUG_ASSERT (mctx->asub_tops > 0);
+  if (__glibc_unlikely (mctx->nsub_tops == mctx->asub_tops))
+    {
+      Idx new_asub_tops = mctx->asub_tops * 2;
+      re_sub_match_top_t **new_array = re_realloc (mctx->sub_tops,
+						   re_sub_match_top_t *,
+						   new_asub_tops);
+      if (__glibc_unlikely (new_array == NULL))
+	return REG_ESPACE;
+      mctx->sub_tops = new_array;
+      mctx->asub_tops = new_asub_tops;
+    }
+  mctx->sub_tops[mctx->nsub_tops] = calloc (1, sizeof (re_sub_match_top_t));
+  if (__glibc_unlikely (mctx->sub_tops[mctx->nsub_tops] == NULL))
+    return REG_ESPACE;
+  mctx->sub_tops[mctx->nsub_tops]->node = node;
+  mctx->sub_tops[mctx->nsub_tops++]->str_idx = str_idx;
+  return REG_NOERROR;
+}
+
+/* Register the node NODE, whose type is OP_CLOSE_SUBEXP, and which matches
+   at STR_IDX, whose corresponding OP_OPEN_SUBEXP is SUB_TOP.
+   Return the new entry if successful, NULL if memory is exhausted.  */
+
+static re_sub_match_last_t *
+match_ctx_add_sublast (re_sub_match_top_t *subtop, Idx node, Idx str_idx)
+{
+  re_sub_match_last_t *new_entry;
+  if (__glibc_unlikely (subtop->nlasts == subtop->alasts))
+    {
+      Idx new_alasts = 2 * subtop->alasts + 1;
+      re_sub_match_last_t **new_array = re_realloc (subtop->lasts,
+						    re_sub_match_last_t *,
+						    new_alasts);
+      if (__glibc_unlikely (new_array == NULL))
+	return NULL;
+      subtop->lasts = new_array;
+      subtop->alasts = new_alasts;
+    }
+  new_entry = calloc (1, sizeof (re_sub_match_last_t));
+  if (__glibc_likely (new_entry != NULL))
+    {
+      subtop->lasts[subtop->nlasts] = new_entry;
+      new_entry->node = node;
+      new_entry->str_idx = str_idx;
+      ++subtop->nlasts;
+    }
+  return new_entry;
+}
+
+static void
+sift_ctx_init (re_sift_context_t *sctx, re_dfastate_t **sifted_sts,
+	       re_dfastate_t **limited_sts, Idx last_node, Idx last_str_idx)
+{
+  sctx->sifted_states = sifted_sts;
+  sctx->limited_states = limited_sts;
+  sctx->last_node = last_node;
+  sctx->last_str_idx = last_str_idx;
+  re_node_set_init_empty (&sctx->limits);
+}
diff --git a/src/grep/lib/safe-read.c b/src/grep/lib/safe-read.c
new file mode 100644
index 0000000..e187b12
--- /dev/null
+++ b/src/grep/lib/safe-read.c
@@ -0,0 +1,71 @@
+/* An interface to read and write that retries after interrupts.
+
+   Copyright (C) 1993-1994, 1998, 2002-2006, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#ifdef SAFE_WRITE
+# include "safe-write.h"
+#else
+# include "safe-read.h"
+#endif
+
+/* Get ssize_t.  */
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <errno.h>
+
+#ifdef EINTR
+# define IS_EINTR(x) ((x) == EINTR)
+#else
+# define IS_EINTR(x) 0
+#endif
+
+#include "sys-limits.h"
+
+#ifdef SAFE_WRITE
+# define safe_rw safe_write
+# define rw write
+#else
+# define safe_rw safe_read
+# define rw read
+# undef const
+# define const /* empty */
+#endif
+
+/* Read(write) up to COUNT bytes at BUF from(to) descriptor FD, retrying if
+   interrupted.  Return the actual number of bytes read(written), zero for EOF,
+   or SAFE_READ_ERROR(SAFE_WRITE_ERROR) upon error.  */
+size_t
+safe_rw (int fd, void const *buf, size_t count)
+{
+  for (;;)
+    {
+      ssize_t result = rw (fd, buf, count);
+
+      if (0 <= result)
+        return result;
+      else if (IS_EINTR (errno))
+        continue;
+      else if (errno == EINVAL && SYS_BUFSIZE_MAX < count)
+        count = SYS_BUFSIZE_MAX;
+      else
+        return result;
+    }
+}
diff --git a/src/grep/lib/safe-read.h b/src/grep/lib/safe-read.h
new file mode 100644
index 0000000..111aff5
--- /dev/null
+++ b/src/grep/lib/safe-read.h
@@ -0,0 +1,47 @@
+/* An interface to read() that retries after interrupts.
+   Copyright (C) 2002, 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Some system calls may be interrupted and fail with errno = EINTR in the
+   following situations:
+     - The process is stopped and restarted (signal SIGSTOP and SIGCONT, user
+       types Ctrl-Z) on some platforms: Mac OS X.
+     - The process receives a signal for which a signal handler was installed
+       with sigaction() with an sa_flags field that does not contain
+       SA_RESTART.
+     - The process receives a signal for which a signal handler was installed
+       with signal() and for which no call to siginterrupt(sig,0) was done,
+       on some platforms: AIX, HP-UX, IRIX, OSF/1, Solaris.
+
+   This module provides a wrapper around read() that handles EINTR.  */
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#define SAFE_READ_ERROR ((size_t) -1)
+
+/* Read up to COUNT bytes at BUF from descriptor FD, retrying if interrupted.
+   Return the actual number of bytes read, zero for EOF, or SAFE_READ_ERROR
+   upon error.  */
+extern size_t safe_read (int fd, void *buf, size_t count);
+
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/src/grep/lib/same-inode.h b/src/grep/lib/same-inode.h
new file mode 100644
index 0000000..c727777
--- /dev/null
+++ b/src/grep/lib/same-inode.h
@@ -0,0 +1,47 @@
+/* Determine whether two stat buffers are known to refer to the same file.
+
+   Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef SAME_INODE_H
+# define SAME_INODE_H 1
+
+# include <sys/types.h>
+
+# if defined __VMS && __CRTL_VER < 80200000
+#  define SAME_INODE(a, b)             \
+    ((a).st_ino[0] == (b).st_ino[0]    \
+     && (a).st_ino[1] == (b).st_ino[1] \
+     && (a).st_ino[2] == (b).st_ino[2] \
+     && (a).st_dev == (b).st_dev)
+# elif defined _WIN32 && ! defined __CYGWIN__
+   /* Native Windows.  */
+#  if _GL_WINDOWS_STAT_INODES
+    /* stat() and fstat() set st_dev and st_ino to 0 if information about
+       the inode is not available.  */
+#   define SAME_INODE(a, b) \
+     (!((a).st_ino == 0 && (a).st_dev == 0) \
+      && (a).st_ino == (b).st_ino && (a).st_dev == (b).st_dev)
+#  else
+    /* stat() and fstat() set st_ino to 0 always.  */
+#   define SAME_INODE(a, b) 0
+#  endif
+# else
+#  define SAME_INODE(a, b)    \
+    ((a).st_ino == (b).st_ino \
+     && (a).st_dev == (b).st_dev)
+# endif
+
+#endif
diff --git a/src/grep/lib/save-cwd.c b/src/grep/lib/save-cwd.c
new file mode 100644
index 0000000..0a18bc5
--- /dev/null
+++ b/src/grep/lib/save-cwd.c
@@ -0,0 +1,97 @@
+/* save-cwd.c -- Save and restore current working directory.
+
+   Copyright (C) 1995, 1997-1998, 2003-2006, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#include <config.h>
+
+#include "save-cwd.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "chdir-long.h"
+#include "unistd--.h"
+
+#if GNULIB_FCNTL_SAFER
+# include "fcntl--.h"
+#else
+# define GNULIB_FCNTL_SAFER 0
+#endif
+
+/* Record the location of the current working directory in CWD so that
+   the program may change to other directories and later use restore_cwd
+   to return to the recorded location.  This function may allocate
+   space using malloc (via getcwd) or leave a file descriptor open;
+   use free_cwd to perform the necessary free or close.  Upon failure,
+   no memory is allocated, any locally opened file descriptors are
+   closed;  return non-zero -- in that case, free_cwd need not be
+   called, but doing so is ok.  Otherwise, return zero.
+
+   The _raison d'etre_ for this interface is that the working directory
+   is sometimes inaccessible, and getcwd is not robust or as efficient.
+   So, we prefer to use the open/fchdir approach, but fall back on
+   getcwd if necessary.  This module works for most cases with just
+   the getcwd-lgpl module, but to be truly robust, use the getcwd module.
+
+   Some systems lack fchdir altogether: e.g., OS/2, pre-2001 Cygwin,
+   SCO Xenix.  Also, SunOS 4 and Irix 5.3 provide the function, yet it
+   doesn't work for partitions on which auditing is enabled.  If
+   you're still using an obsolete system with these problems, please
+   send email to the maintainer of this code.  */
+
+int
+save_cwd (struct saved_cwd *cwd)
+{
+  cwd->name = NULL;
+
+  cwd->desc = open (".", O_SEARCH | O_CLOEXEC);
+  if (!GNULIB_FCNTL_SAFER)
+    cwd->desc = fd_safer_flag (cwd->desc, O_CLOEXEC);
+  if (cwd->desc < 0)
+    {
+      cwd->name = getcwd (NULL, 0);
+      return cwd->name ? 0 : -1;
+    }
+
+  return 0;
+}
+
+/* Change to recorded location, CWD, in directory hierarchy.
+   Upon failure, return -1 (errno is set by chdir or fchdir).
+   Upon success, return zero.  */
+
+int
+restore_cwd (const struct saved_cwd *cwd)
+{
+  if (0 <= cwd->desc)
+    return fchdir (cwd->desc);
+  else
+    return chdir_long (cwd->name);
+}
+
+void
+free_cwd (struct saved_cwd *cwd)
+{
+  if (cwd->desc >= 0)
+    close (cwd->desc);
+  free (cwd->name);
+}
diff --git a/src/grep/lib/save-cwd.h b/src/grep/lib/save-cwd.h
new file mode 100644
index 0000000..3cefba5
--- /dev/null
+++ b/src/grep/lib/save-cwd.h
@@ -0,0 +1,34 @@
+/* Save and restore current working directory.
+
+   Copyright (C) 1995, 1997-1998, 2003, 2009-2021 Free Software Foundation,
+   Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#ifndef SAVE_CWD_H
+# define SAVE_CWD_H 1
+
+struct saved_cwd
+  {
+    int desc;
+    char *name;
+  };
+
+int save_cwd (struct saved_cwd *cwd);
+int restore_cwd (const struct saved_cwd *cwd);
+void free_cwd (struct saved_cwd *cwd);
+
+#endif /* SAVE_CWD_H */
diff --git a/src/grep/lib/setlocale-lock.c b/src/grep/lib/setlocale-lock.c
new file mode 100644
index 0000000..53e231c
--- /dev/null
+++ b/src/grep/lib/setlocale-lock.c
@@ -0,0 +1,150 @@
+/* Return the internal lock used by setlocale_null_r.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+/* When it is known that the gl_get_setlocale_null_lock function is defined
+   by a dependency library, it should not be defined here.  */
+#if OMIT_SETLOCALE_LOCK
+
+/* This declaration is solely to ensure that after preprocessing
+   this file is never empty.  */
+typedef int dummy;
+
+#else
+
+/* This file defines the internal lock used by setlocale_null_r.
+   It is a separate compilation unit, so that only one copy of it is
+   present when linking statically.  */
+
+/* Prohibit renaming this symbol.  */
+# undef gl_get_setlocale_null_lock
+
+/* Macro for exporting a symbol (function, not variable) defined in this file,
+   when compiled into a shared library.  */
+# ifndef DLL_EXPORTED
+#  if HAVE_VISIBILITY
+  /* Override the effect of the compiler option '-fvisibility=hidden'.  */
+#   define DLL_EXPORTED __attribute__((__visibility__("default")))
+#  elif defined _WIN32 || defined __CYGWIN__
+#   define DLL_EXPORTED __declspec(dllexport)
+#  else
+#   define DLL_EXPORTED
+#  endif
+# endif
+
+# if defined _WIN32 && !defined __CYGWIN__
+
+#  define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#  include <windows.h>
+
+#  include "windows-initguard.h"
+
+/* The return type is a 'CRITICAL_SECTION *', not a 'glwthread_mutex_t *',
+   because the latter is not guaranteed to be a stable ABI in the future.  */
+
+/* Make sure the function gets exported from DLLs.  */
+DLL_EXPORTED CRITICAL_SECTION *gl_get_setlocale_null_lock (void);
+
+static glwthread_initguard_t guard = GLWTHREAD_INITGUARD_INIT;
+static CRITICAL_SECTION lock;
+
+/* Returns the internal lock used by setlocale_null_r.  */
+CRITICAL_SECTION *
+gl_get_setlocale_null_lock (void)
+{
+  if (!guard.done)
+    {
+      if (InterlockedIncrement (&guard.started) == 0)
+        {
+          /* This thread is the first one to need the lock.  Initialize it.  */
+          InitializeCriticalSection (&lock);
+          guard.done = 1;
+        }
+      else
+        {
+          /* Don't let guard.started grow and wrap around.  */
+          InterlockedDecrement (&guard.started);
+          /* Yield the CPU while waiting for another thread to finish
+             initializing this mutex.  */
+          while (!guard.done)
+            Sleep (0);
+        }
+    }
+  return &lock;
+}
+
+# elif HAVE_PTHREAD_API
+
+#  include <pthread.h>
+
+static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+
+/* Make sure the function gets exported from shared libraries.  */
+DLL_EXPORTED pthread_mutex_t *gl_get_setlocale_null_lock (void);
+
+/* Returns the internal lock used by setlocale_null_r.  */
+pthread_mutex_t *
+gl_get_setlocale_null_lock (void)
+{
+  return &mutex;
+}
+
+# elif HAVE_THREADS_H
+
+#  include <threads.h>
+#  include <stdlib.h>
+
+static int volatile init_needed = 1;
+static once_flag init_once = ONCE_FLAG_INIT;
+static mtx_t mutex;
+
+static void
+atomic_init (void)
+{
+  if (mtx_init (&mutex, mtx_plain) != thrd_success)
+    abort ();
+  init_needed = 0;
+}
+
+/* Make sure the function gets exported from shared libraries.  */
+DLL_EXPORTED mtx_t *gl_get_setlocale_null_lock (void);
+
+/* Returns the internal lock used by setlocale_null_r.  */
+mtx_t *
+gl_get_setlocale_null_lock (void)
+{
+  if (init_needed)
+    call_once (&init_once, atomic_init);
+  return &mutex;
+}
+
+# endif
+
+# if (defined _WIN32 || defined __CYGWIN__) && !defined _MSC_VER
+/* Make sure the '__declspec(dllimport)' in setlocale_null.c does not cause
+   a link failure when no DLLs are involved.  */
+#  if defined _WIN64 || defined _LP64
+#   define IMP(x) __imp_##x
+#  else
+#   define IMP(x) _imp__##x
+#  endif
+void * IMP(gl_get_setlocale_null_lock) = &gl_get_setlocale_null_lock;
+# endif
+
+#endif
diff --git a/src/grep/lib/setlocale_null.c b/src/grep/lib/setlocale_null.c
new file mode 100644
index 0000000..dbfda25
--- /dev/null
+++ b/src/grep/lib/setlocale_null.c
@@ -0,0 +1,411 @@
+/* Query the name of the current global locale.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "setlocale_null.h"
+
+#include <errno.h>
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#if defined _WIN32 && !defined __CYGWIN__
+# include <wchar.h>
+#endif
+
+#if !(SETLOCALE_NULL_ALL_MTSAFE && SETLOCALE_NULL_ONE_MTSAFE)
+# if defined _WIN32 && !defined __CYGWIN__
+
+#  define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#  include <windows.h>
+
+# elif HAVE_PTHREAD_API
+
+#  include <pthread.h>
+#  if HAVE_THREADS_H && HAVE_WEAK_SYMBOLS
+#   include <threads.h>
+#   pragma weak thrd_exit
+#   define c11_threads_in_use() (thrd_exit != NULL)
+#  else
+#   define c11_threads_in_use() 0
+#  endif
+
+# elif HAVE_THREADS_H
+
+#  include <threads.h>
+
+# endif
+#endif
+
+/* Use the system's setlocale() function, not the gnulib override, here.  */
+#undef setlocale
+
+static const char *
+setlocale_null_androidfix (int category)
+{
+  const char *result = setlocale (category, NULL);
+
+#ifdef __ANDROID__
+  if (result == NULL)
+    switch (category)
+      {
+      case LC_CTYPE:
+      case LC_NUMERIC:
+      case LC_TIME:
+      case LC_COLLATE:
+      case LC_MONETARY:
+      case LC_MESSAGES:
+      case LC_ALL:
+      case LC_PAPER:
+      case LC_NAME:
+      case LC_ADDRESS:
+      case LC_TELEPHONE:
+      case LC_MEASUREMENT:
+        result = "C";
+        break;
+      default:
+        break;
+      }
+#endif
+
+  return result;
+}
+
+static int
+setlocale_null_unlocked (int category, char *buf, size_t bufsize)
+{
+#if defined _WIN32 && !defined __CYGWIN__ && defined _MSC_VER
+  /* On native Windows, nowadays, the setlocale() implementation is based
+     on _wsetlocale() and uses malloc() for the result.  We are better off
+     using _wsetlocale() directly.  */
+  const wchar_t *result = _wsetlocale (category, NULL);
+
+  if (result == NULL)
+    {
+      /* CATEGORY is invalid.  */
+      if (bufsize > 0)
+        /* Return an empty string in BUF.
+           This is a convenience for callers that don't want to write explicit
+           code for handling EINVAL.  */
+        buf[0] = '\0';
+      return EINVAL;
+    }
+  else
+    {
+      size_t length = wcslen (result);
+      if (length < bufsize)
+        {
+          size_t i;
+
+          /* Convert wchar_t[] -> char[], assuming plain ASCII.  */
+          for (i = 0; i <= length; i++)
+            buf[i] = result[i];
+
+          return 0;
+        }
+      else
+        {
+          if (bufsize > 0)
+            {
+              /* Return a truncated result in BUF.
+                 This is a convenience for callers that don't want to write
+                 explicit code for handling ERANGE.  */
+              size_t i;
+
+              /* Convert wchar_t[] -> char[], assuming plain ASCII.  */
+              for (i = 0; i < bufsize; i++)
+                buf[i] = result[i];
+              buf[bufsize - 1] = '\0';
+            }
+          return ERANGE;
+        }
+    }
+#else
+  const char *result = setlocale_null_androidfix (category);
+
+  if (result == NULL)
+    {
+      /* CATEGORY is invalid.  */
+      if (bufsize > 0)
+        /* Return an empty string in BUF.
+           This is a convenience for callers that don't want to write explicit
+           code for handling EINVAL.  */
+        buf[0] = '\0';
+      return EINVAL;
+    }
+  else
+    {
+      size_t length = strlen (result);
+      if (length < bufsize)
+        {
+          memcpy (buf, result, length + 1);
+          return 0;
+        }
+      else
+        {
+          if (bufsize > 0)
+            {
+              /* Return a truncated result in BUF.
+                 This is a convenience for callers that don't want to write
+                 explicit code for handling ERANGE.  */
+              memcpy (buf, result, bufsize - 1);
+              buf[bufsize - 1] = '\0';
+            }
+          return ERANGE;
+        }
+    }
+#endif
+}
+
+#if !(SETLOCALE_NULL_ALL_MTSAFE && SETLOCALE_NULL_ONE_MTSAFE) /* musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin */
+
+/* Use a lock, so that no two threads can invoke setlocale_null_unlocked
+   at the same time.  */
+
+/* Prohibit renaming this symbol.  */
+# undef gl_get_setlocale_null_lock
+
+# if defined _WIN32 && !defined __CYGWIN__
+
+extern __declspec(dllimport) CRITICAL_SECTION *gl_get_setlocale_null_lock (void);
+
+static int
+setlocale_null_with_lock (int category, char *buf, size_t bufsize)
+{
+  CRITICAL_SECTION *lock = gl_get_setlocale_null_lock ();
+  int ret;
+
+  EnterCriticalSection (lock);
+  ret = setlocale_null_unlocked (category, buf, bufsize);
+  LeaveCriticalSection (lock);
+
+  return ret;
+}
+
+# elif HAVE_PTHREAD_API /* musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin */
+
+extern
+#  if defined _WIN32 || defined __CYGWIN__
+  __declspec(dllimport)
+#  endif
+  pthread_mutex_t *gl_get_setlocale_null_lock (void);
+
+#  if HAVE_WEAK_SYMBOLS /* musl libc, FreeBSD, NetBSD, OpenBSD, Haiku */
+
+    /* Avoid the need to link with '-lpthread'.  */
+#   pragma weak pthread_mutex_lock
+#   pragma weak pthread_mutex_unlock
+
+    /* Determine whether libpthread is in use.  */
+#   pragma weak pthread_mutexattr_gettype
+    /* See the comments in lock.h.  */
+#   define pthread_in_use() \
+      (pthread_mutexattr_gettype != NULL || c11_threads_in_use ())
+
+#  else
+#   define pthread_in_use() 1
+#  endif
+
+static int
+setlocale_null_with_lock (int category, char *buf, size_t bufsize)
+{
+  if (pthread_in_use())
+    {
+      pthread_mutex_t *lock = gl_get_setlocale_null_lock ();
+      int ret;
+
+      if (pthread_mutex_lock (lock))
+        abort ();
+      ret = setlocale_null_unlocked (category, buf, bufsize);
+      if (pthread_mutex_unlock (lock))
+        abort ();
+
+      return ret;
+    }
+  else
+    return setlocale_null_unlocked (category, buf, bufsize);
+}
+
+# elif HAVE_THREADS_H
+
+extern mtx_t *gl_get_setlocale_null_lock (void);
+
+static int
+setlocale_null_with_lock (int category, char *buf, size_t bufsize)
+{
+  mtx_t *lock = gl_get_setlocale_null_lock ();
+  int ret;
+
+  if (mtx_lock (lock) != thrd_success)
+    abort ();
+  ret = setlocale_null_unlocked (category, buf, bufsize);
+  if (mtx_unlock (lock) != thrd_success)
+    abort ();
+
+  return ret;
+}
+
+# endif
+
+#endif
+
+int
+setlocale_null_r (int category, char *buf, size_t bufsize)
+{
+#if SETLOCALE_NULL_ALL_MTSAFE
+# if SETLOCALE_NULL_ONE_MTSAFE
+
+  return setlocale_null_unlocked (category, buf, bufsize);
+
+# else
+
+  if (category == LC_ALL)
+    return setlocale_null_unlocked (category, buf, bufsize);
+  else
+    return setlocale_null_with_lock (category, buf, bufsize);
+
+# endif
+#else
+# if SETLOCALE_NULL_ONE_MTSAFE
+
+  if (category == LC_ALL)
+    return setlocale_null_with_lock (category, buf, bufsize);
+  else
+    return setlocale_null_unlocked (category, buf, bufsize);
+
+# else
+
+  return setlocale_null_with_lock (category, buf, bufsize);
+
+# endif
+#endif
+}
+
+const char *
+setlocale_null (int category)
+{
+#if SETLOCALE_NULL_ALL_MTSAFE && SETLOCALE_NULL_ONE_MTSAFE
+  return setlocale_null_androidfix (category);
+#else
+
+  /* This call must be multithread-safe.  To achieve this without using
+     thread-local storage:
+       1. We use a specific static buffer for each possible CATEGORY
+          argument.  So that different threads can call setlocale_mtsafe
+          with different CATEGORY arguments, without interfering.
+       2. We use a simple strcpy or memcpy to fill this static buffer.
+          Filling it through, for example, strcpy + strcat would not be
+          guaranteed to leave the buffer's contents intact if another thread
+          is currently accessing it.  If necessary, the contents is first
+          assembled in a stack-allocated buffer.  */
+  if (category == LC_ALL)
+    {
+# if SETLOCALE_NULL_ALL_MTSAFE
+      return setlocale_null_androidfix (LC_ALL);
+# else
+      char buf[SETLOCALE_NULL_ALL_MAX];
+      static char resultbuf[SETLOCALE_NULL_ALL_MAX];
+
+      if (setlocale_null_r (LC_ALL, buf, sizeof (buf)))
+        return "C";
+      strcpy (resultbuf, buf);
+      return resultbuf;
+# endif
+    }
+  else
+    {
+# if SETLOCALE_NULL_ONE_MTSAFE
+      return setlocale_null_androidfix (category);
+# else
+      enum
+        {
+          LC_CTYPE_INDEX,
+          LC_NUMERIC_INDEX,
+          LC_TIME_INDEX,
+          LC_COLLATE_INDEX,
+          LC_MONETARY_INDEX,
+          LC_MESSAGES_INDEX,
+#  ifdef LC_PAPER
+          LC_PAPER_INDEX,
+#  endif
+#  ifdef LC_NAME
+          LC_NAME_INDEX,
+#  endif
+#  ifdef LC_ADDRESS
+          LC_ADDRESS_INDEX,
+#  endif
+#  ifdef LC_TELEPHONE
+          LC_TELEPHONE_INDEX,
+#  endif
+#  ifdef LC_MEASUREMENT
+          LC_MEASUREMENT_INDEX,
+#  endif
+#  ifdef LC_IDENTIFICATION
+          LC_IDENTIFICATION_INDEX,
+#  endif
+          LC_INDICES_COUNT
+        }
+        i;
+      char buf[SETLOCALE_NULL_MAX];
+      static char resultbuf[LC_INDICES_COUNT][SETLOCALE_NULL_MAX];
+      int err;
+
+      err = setlocale_null_r (category, buf, sizeof (buf));
+      if (err == EINVAL)
+        return NULL;
+      if (err)
+        return "C";
+
+      switch (category)
+        {
+        case LC_CTYPE:          i = LC_CTYPE_INDEX;          break;
+        case LC_NUMERIC:        i = LC_NUMERIC_INDEX;        break;
+        case LC_TIME:           i = LC_TIME_INDEX;           break;
+        case LC_COLLATE:        i = LC_COLLATE_INDEX;        break;
+        case LC_MONETARY:       i = LC_MONETARY_INDEX;       break;
+        case LC_MESSAGES:       i = LC_MESSAGES_INDEX;       break;
+#  ifdef LC_PAPER
+        case LC_PAPER:          i = LC_PAPER_INDEX;          break;
+#  endif
+#  ifdef LC_NAME
+        case LC_NAME:           i = LC_NAME_INDEX;           break;
+#  endif
+#  ifdef LC_ADDRESS
+        case LC_ADDRESS:        i = LC_ADDRESS_INDEX;        break;
+#  endif
+#  ifdef LC_TELEPHONE
+        case LC_TELEPHONE:      i = LC_TELEPHONE_INDEX;      break;
+#  endif
+#  ifdef LC_MEASUREMENT
+        case LC_MEASUREMENT:    i = LC_MEASUREMENT_INDEX;    break;
+#  endif
+#  ifdef LC_IDENTIFICATION
+        case LC_IDENTIFICATION: i = LC_IDENTIFICATION_INDEX; break;
+#  endif
+        default:
+          /* If you get here, a #ifdef LC_xxx is missing.  */
+          abort ();
+        }
+
+      strcpy (resultbuf[i], buf);
+      return resultbuf[i];
+# endif
+    }
+#endif
+}
diff --git a/src/grep/lib/setlocale_null.h b/src/grep/lib/setlocale_null.h
new file mode 100644
index 0000000..00c42e2
--- /dev/null
+++ b/src/grep/lib/setlocale_null.h
@@ -0,0 +1,82 @@
+/* Query the name of the current global locale.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
+
+#ifndef _SETLOCALE_NULL_H
+#define _SETLOCALE_NULL_H
+
+#include <stddef.h>
+
+#include "arg-nonnull.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Recommended size of a buffer for a locale name for a single category.
+   On glibc systems, you can have locale names that are relative file names;
+   assume a maximum length 256.
+   In native Windows, in 2018 the longest locale name was of length 58
+   ("FYRO Macedonian_Former Yugoslav Republic of Macedonia.1251").  */
+#define SETLOCALE_NULL_MAX (256+1)
+
+/* Recommended size of a buffer for a locale name with all categories.
+   On glibc systems, you can have locale names that are relative file names;
+   assume maximum length 256 for each.  There are 12 categories; so, the
+   maximum total length is 148+12*256.
+   In native Windows, there are 5 categories, and the maximum total length is
+   55+5*58.  */
+#define SETLOCALE_NULL_ALL_MAX (148+12*256+1)
+
+/* setlocale_null_r (CATEGORY, BUF, BUFSIZE) is like setlocale (CATEGORY, NULL),
+   except that
+     - it is guaranteed to be multithread-safe,
+     - it returns the resulting locale category name or locale name in the
+       user-supplied buffer BUF, which must be BUFSIZE bytes long.
+   The recommended minimum buffer size is
+     - SETLOCALE_NULL_MAX for CATEGORY != LC_ALL, and
+     - SETLOCALE_NULL_ALL_MAX for CATEGORY == LC_ALL.
+   The return value is an error code: 0 if the call is successful, EINVAL if
+   CATEGORY is invalid, or ERANGE if BUFSIZE is smaller than the length needed
+   size (including the trailing NUL byte).  In the latter case, a truncated
+   result is returned in BUF, but still NUL-terminated if BUFSIZE > 0.
+   For this call to be multithread-safe, *all* calls to
+   setlocale (CATEGORY, NULL) in all other threads must have been converted
+   to use setlocale_null_r or setlocale_null as well, and the other threads
+   must not make other setlocale invocations (since changing the global locale
+   has side effects on all threads).  */
+extern int setlocale_null_r (int category, char *buf, size_t bufsize)
+  _GL_ARG_NONNULL ((2));
+
+/* setlocale_null (CATEGORY) is like setlocale (CATEGORY, NULL), except that
+   it is guaranteed to be multithread-safe.
+   The return value is NULL if CATEGORY is invalid.
+   For this call to be multithread-safe, *all* calls to
+   setlocale (CATEGORY, NULL) in all other threads must have been converted
+   to use setlocale_null_r or setlocale_null as well, and the other threads
+   must not make other setlocale invocations (since changing the global locale
+   has side effects on all threads).  */
+extern const char *setlocale_null (int category);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SETLOCALE_NULL_H */
diff --git a/src/grep/lib/signal.in.h b/src/grep/lib/signal.in.h
new file mode 100644
index 0000000..275da8c
--- /dev/null
+++ b/src/grep/lib/signal.in.h
@@ -0,0 +1,487 @@
+/* A GNU-like <signal.h>.
+
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined __need_sig_atomic_t || defined __need_sigset_t || defined _GL_ALREADY_INCLUDING_SIGNAL_H || (defined _SIGNAL_H && !defined __SIZEOF_PTHREAD_MUTEX_T)
+/* Special invocation convention:
+   - Inside glibc header files.
+   - On glibc systems we have a sequence of nested includes
+     <signal.h> -> <ucontext.h> -> <signal.h>.
+     In this situation, the functions are not yet declared, therefore we cannot
+     provide the C++ aliases.
+   - On glibc systems with GCC 4.3 we have a sequence of nested includes
+     <csignal> -> </usr/include/signal.h> -> <sys/ucontext.h> -> <signal.h>.
+     In this situation, some of the functions are not yet declared, therefore
+     we cannot provide the C++ aliases.  */
+
+# @INCLUDE_NEXT@ @NEXT_SIGNAL_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_SIGNAL_H
+
+#define _GL_ALREADY_INCLUDING_SIGNAL_H
+
+/* Define pid_t, uid_t.
+   Also, mingw defines sigset_t not in <signal.h>, but in <sys/types.h>.
+   On Solaris 10, <signal.h> includes <sys/types.h>, which eventually includes
+   us; so include <sys/types.h> now, before the second inclusion guard.  */
+#include <sys/types.h>
+
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_SIGNAL_H@
+
+#undef _GL_ALREADY_INCLUDING_SIGNAL_H
+
+#ifndef _@GUARD_PREFIX@_SIGNAL_H
+#define _@GUARD_PREFIX@_SIGNAL_H
+
+/* Mac OS X 10.3, FreeBSD 6.4, OpenBSD 3.8, OSF/1 4.0, Solaris 2.6, Android,
+   OS/2 kLIBC declare pthread_sigmask in <pthread.h>, not in <signal.h>.
+   But avoid namespace pollution on glibc systems.*/
+#if (@GNULIB_PTHREAD_SIGMASK@ || defined GNULIB_POSIXCHECK) \
+    && ((defined __APPLE__ && defined __MACH__) \
+        || defined __FreeBSD__ || defined __OpenBSD__ || defined __osf__ \
+        || defined __sun || defined __ANDROID__ || defined __KLIBC__) \
+    && ! defined __GLIBC__
+# include <pthread.h>
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+/* On AIX, sig_atomic_t already includes volatile.  C99 requires that
+   'volatile sig_atomic_t' ignore the extra modifier, but C89 did not.
+   Hence, redefine this to a non-volatile type as needed.  */
+#if ! @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
+# if !GNULIB_defined_sig_atomic_t
+typedef int rpl_sig_atomic_t;
+#  undef sig_atomic_t
+#  define sig_atomic_t rpl_sig_atomic_t
+#  define GNULIB_defined_sig_atomic_t 1
+# endif
+#endif
+
+/* A set or mask of signals.  */
+#if !@HAVE_SIGSET_T@
+# if !GNULIB_defined_sigset_t
+typedef unsigned int sigset_t;
+#  define GNULIB_defined_sigset_t 1
+# endif
+#endif
+
+/* Define sighandler_t, the type of signal handlers.  A GNU extension.  */
+#if !@HAVE_SIGHANDLER_T@
+# ifdef __cplusplus
+extern "C" {
+# endif
+# if !GNULIB_defined_sighandler_t
+typedef void (*sighandler_t) (int);
+#  define GNULIB_defined_sighandler_t 1
+# endif
+# ifdef __cplusplus
+}
+# endif
+#endif
+
+
+#if @GNULIB_SIGNAL_H_SIGPIPE@
+# ifndef SIGPIPE
+/* Define SIGPIPE to a value that does not overlap with other signals.  */
+#  define SIGPIPE 13
+#  define GNULIB_defined_SIGPIPE 1
+/* To actually use SIGPIPE, you also need the gnulib modules 'sigprocmask',
+   'write', 'stdio'.  */
+# endif
+#endif
+
+
+/* Maximum signal number + 1.  */
+#ifndef NSIG
+# if defined __TANDEM
+#  define NSIG 32
+# endif
+#endif
+
+
+#if @GNULIB_PTHREAD_SIGMASK@
+# if @REPLACE_PTHREAD_SIGMASK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pthread_sigmask
+#   define pthread_sigmask rpl_pthread_sigmask
+#  endif
+_GL_FUNCDECL_RPL (pthread_sigmask, int,
+                  (int how,
+                   const sigset_t *restrict new_mask,
+                   sigset_t *restrict old_mask));
+_GL_CXXALIAS_RPL (pthread_sigmask, int,
+                  (int how,
+                   const sigset_t *restrict new_mask,
+                   sigset_t *restrict old_mask));
+# else
+#  if !(@HAVE_PTHREAD_SIGMASK@ || defined pthread_sigmask)
+_GL_FUNCDECL_SYS (pthread_sigmask, int,
+                  (int how,
+                   const sigset_t *restrict new_mask,
+                   sigset_t *restrict old_mask));
+#  endif
+_GL_CXXALIAS_SYS (pthread_sigmask, int,
+                  (int how,
+                   const sigset_t *restrict new_mask,
+                   sigset_t *restrict old_mask));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pthread_sigmask);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pthread_sigmask
+# if HAVE_RAW_DECL_PTHREAD_SIGMASK
+_GL_WARN_ON_USE (pthread_sigmask, "pthread_sigmask is not portable - "
+                 "use gnulib module pthread_sigmask for portability");
+# endif
+#endif
+
+
+#if @GNULIB_RAISE@
+# if @REPLACE_RAISE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef raise
+#   define raise rpl_raise
+#  endif
+_GL_FUNCDECL_RPL (raise, int, (int sig));
+_GL_CXXALIAS_RPL (raise, int, (int sig));
+# else
+#  if !@HAVE_RAISE@
+_GL_FUNCDECL_SYS (raise, int, (int sig));
+#  endif
+_GL_CXXALIAS_SYS (raise, int, (int sig));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (raise);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef raise
+/* Assume raise is always declared.  */
+_GL_WARN_ON_USE (raise, "raise can crash on native Windows - "
+                 "use gnulib module raise for portability");
+#endif
+
+
+#if @GNULIB_SIGPROCMASK@
+# if !@HAVE_POSIX_SIGNALBLOCKING@
+
+#  ifndef GNULIB_defined_signal_blocking
+#   define GNULIB_defined_signal_blocking 1
+#  endif
+
+/* Maximum signal number + 1.  */
+#  ifndef NSIG
+#   define NSIG 32
+#  endif
+
+/* This code supports only 32 signals.  */
+#  if !GNULIB_defined_verify_NSIG_constraint
+typedef int verify_NSIG_constraint[NSIG <= 32 ? 1 : -1];
+#   define GNULIB_defined_verify_NSIG_constraint 1
+#  endif
+
+# endif
+
+/* When also using extern inline, suppress the use of static inline in
+   standard headers of problematic Apple configurations, as Libc at
+   least through Libc-825.26 (2013-04-09) mishandles it; see, e.g.,
+   <https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html>.
+   Perhaps Apple will fix this some day.  */
+#if (defined _GL_EXTERN_INLINE_IN_USE && defined __APPLE__ \
+     && (defined __i386__ || defined __x86_64__))
+# undef sigaddset
+# undef sigdelset
+# undef sigemptyset
+# undef sigfillset
+# undef sigismember
+#endif
+
+/* Test whether a given signal is contained in a signal set.  */
+# if @HAVE_POSIX_SIGNALBLOCKING@
+/* This function is defined as a macro on Mac OS X.  */
+#  if defined __cplusplus && defined GNULIB_NAMESPACE
+#   undef sigismember
+#  endif
+# else
+_GL_FUNCDECL_SYS (sigismember, int, (const sigset_t *set, int sig)
+                                    _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (sigismember, int, (const sigset_t *set, int sig));
+_GL_CXXALIASWARN (sigismember);
+
+/* Initialize a signal set to the empty set.  */
+# if @HAVE_POSIX_SIGNALBLOCKING@
+/* This function is defined as a macro on Mac OS X.  */
+#  if defined __cplusplus && defined GNULIB_NAMESPACE
+#   undef sigemptyset
+#  endif
+# else
+_GL_FUNCDECL_SYS (sigemptyset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (sigemptyset, int, (sigset_t *set));
+_GL_CXXALIASWARN (sigemptyset);
+
+/* Add a signal to a signal set.  */
+# if @HAVE_POSIX_SIGNALBLOCKING@
+/* This function is defined as a macro on Mac OS X.  */
+#  if defined __cplusplus && defined GNULIB_NAMESPACE
+#   undef sigaddset
+#  endif
+# else
+_GL_FUNCDECL_SYS (sigaddset, int, (sigset_t *set, int sig)
+                                  _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (sigaddset, int, (sigset_t *set, int sig));
+_GL_CXXALIASWARN (sigaddset);
+
+/* Remove a signal from a signal set.  */
+# if @HAVE_POSIX_SIGNALBLOCKING@
+/* This function is defined as a macro on Mac OS X.  */
+#  if defined __cplusplus && defined GNULIB_NAMESPACE
+#   undef sigdelset
+#  endif
+# else
+_GL_FUNCDECL_SYS (sigdelset, int, (sigset_t *set, int sig)
+                                  _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (sigdelset, int, (sigset_t *set, int sig));
+_GL_CXXALIASWARN (sigdelset);
+
+/* Fill a signal set with all possible signals.  */
+# if @HAVE_POSIX_SIGNALBLOCKING@
+/* This function is defined as a macro on Mac OS X.  */
+#  if defined __cplusplus && defined GNULIB_NAMESPACE
+#   undef sigfillset
+#  endif
+# else
+_GL_FUNCDECL_SYS (sigfillset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (sigfillset, int, (sigset_t *set));
+_GL_CXXALIASWARN (sigfillset);
+
+/* Return the set of those blocked signals that are pending.  */
+# if !@HAVE_POSIX_SIGNALBLOCKING@
+_GL_FUNCDECL_SYS (sigpending, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (sigpending, int, (sigset_t *set));
+_GL_CXXALIASWARN (sigpending);
+
+/* If OLD_SET is not NULL, put the current set of blocked signals in *OLD_SET.
+   Then, if SET is not NULL, affect the current set of blocked signals by
+   combining it with *SET as indicated in OPERATION.
+   In this implementation, you are not allowed to change a signal handler
+   while the signal is blocked.  */
+# if !@HAVE_POSIX_SIGNALBLOCKING@
+#  define SIG_BLOCK   0  /* blocked_set = blocked_set | *set; */
+#  define SIG_SETMASK 1  /* blocked_set = *set; */
+#  define SIG_UNBLOCK 2  /* blocked_set = blocked_set & ~*set; */
+_GL_FUNCDECL_SYS (sigprocmask, int,
+                  (int operation,
+                   const sigset_t *restrict set,
+                   sigset_t *restrict old_set));
+# endif
+_GL_CXXALIAS_SYS (sigprocmask, int,
+                  (int operation,
+                   const sigset_t *restrict set,
+                   sigset_t *restrict old_set));
+_GL_CXXALIASWARN (sigprocmask);
+
+/* Install the handler FUNC for signal SIG, and return the previous
+   handler.  */
+# ifdef __cplusplus
+extern "C" {
+# endif
+# if !GNULIB_defined_function_taking_int_returning_void_t
+typedef void (*_gl_function_taking_int_returning_void_t) (int);
+#  define GNULIB_defined_function_taking_int_returning_void_t 1
+# endif
+# ifdef __cplusplus
+}
+# endif
+# if !@HAVE_POSIX_SIGNALBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define signal rpl_signal
+#  endif
+_GL_FUNCDECL_RPL (signal, _gl_function_taking_int_returning_void_t,
+                  (int sig, _gl_function_taking_int_returning_void_t func));
+_GL_CXXALIAS_RPL (signal, _gl_function_taking_int_returning_void_t,
+                  (int sig, _gl_function_taking_int_returning_void_t func));
+# else
+/* On OpenBSD, the declaration of 'signal' may not be present at this point,
+   because it occurs in <sys/signal.h>, not <signal.h> directly.  */
+#  if defined __OpenBSD__
+_GL_FUNCDECL_SYS (signal, _gl_function_taking_int_returning_void_t,
+                  (int sig, _gl_function_taking_int_returning_void_t func));
+#  endif
+_GL_CXXALIAS_SYS (signal, _gl_function_taking_int_returning_void_t,
+                  (int sig, _gl_function_taking_int_returning_void_t func));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (signal);
+# endif
+
+# if !@HAVE_POSIX_SIGNALBLOCKING@ && GNULIB_defined_SIGPIPE
+/* Raise signal SIGPIPE.  */
+_GL_EXTERN_C int _gl_raise_SIGPIPE (void);
+# endif
+
+#elif defined GNULIB_POSIXCHECK
+# undef sigaddset
+# if HAVE_RAW_DECL_SIGADDSET
+_GL_WARN_ON_USE (sigaddset, "sigaddset is unportable - "
+                 "use the gnulib module sigprocmask for portability");
+# endif
+# undef sigdelset
+# if HAVE_RAW_DECL_SIGDELSET
+_GL_WARN_ON_USE (sigdelset, "sigdelset is unportable - "
+                 "use the gnulib module sigprocmask for portability");
+# endif
+# undef sigemptyset
+# if HAVE_RAW_DECL_SIGEMPTYSET
+_GL_WARN_ON_USE (sigemptyset, "sigemptyset is unportable - "
+                 "use the gnulib module sigprocmask for portability");
+# endif
+# undef sigfillset
+# if HAVE_RAW_DECL_SIGFILLSET
+_GL_WARN_ON_USE (sigfillset, "sigfillset is unportable - "
+                 "use the gnulib module sigprocmask for portability");
+# endif
+# undef sigismember
+# if HAVE_RAW_DECL_SIGISMEMBER
+_GL_WARN_ON_USE (sigismember, "sigismember is unportable - "
+                 "use the gnulib module sigprocmask for portability");
+# endif
+# undef sigpending
+# if HAVE_RAW_DECL_SIGPENDING
+_GL_WARN_ON_USE (sigpending, "sigpending is unportable - "
+                 "use the gnulib module sigprocmask for portability");
+# endif
+# undef sigprocmask
+# if HAVE_RAW_DECL_SIGPROCMASK
+_GL_WARN_ON_USE (sigprocmask, "sigprocmask is unportable - "
+                 "use the gnulib module sigprocmask for portability");
+# endif
+#endif /* @GNULIB_SIGPROCMASK@ */
+
+
+#if @GNULIB_SIGACTION@
+# if !@HAVE_SIGACTION@
+
+#  if !@HAVE_SIGINFO_T@
+
+#   if !GNULIB_defined_siginfo_types
+
+/* Present to allow compilation, but unsupported by gnulib.  */
+union sigval
+{
+  int sival_int;
+  void *sival_ptr;
+};
+
+/* Present to allow compilation, but unsupported by gnulib.  */
+struct siginfo_t
+{
+  int si_signo;
+  int si_code;
+  int si_errno;
+  pid_t si_pid;
+  uid_t si_uid;
+  void *si_addr;
+  int si_status;
+  long si_band;
+  union sigval si_value;
+};
+typedef struct siginfo_t siginfo_t;
+
+#    define GNULIB_defined_siginfo_types 1
+#   endif
+
+#  endif /* !@HAVE_SIGINFO_T@ */
+
+/* We assume that platforms which lack the sigaction() function also lack
+   the 'struct sigaction' type, and vice versa.  */
+
+#  if !GNULIB_defined_struct_sigaction
+
+struct sigaction
+{
+  union
+  {
+    void (*_sa_handler) (int);
+    /* Present to allow compilation, but unsupported by gnulib.  POSIX
+       says that implementations may, but not must, make sa_sigaction
+       overlap with sa_handler, but we know of no implementation where
+       they do not overlap.  */
+    void (*_sa_sigaction) (int, siginfo_t *, void *);
+  } _sa_func;
+  sigset_t sa_mask;
+  /* Not all POSIX flags are supported.  */
+  int sa_flags;
+};
+#   define sa_handler _sa_func._sa_handler
+#   define sa_sigaction _sa_func._sa_sigaction
+/* Unsupported flags are not present.  */
+#   define SA_RESETHAND 1
+#   define SA_NODEFER 2
+#   define SA_RESTART 4
+
+#   define GNULIB_defined_struct_sigaction 1
+#  endif
+
+_GL_FUNCDECL_SYS (sigaction, int, (int, const struct sigaction *restrict,
+                                   struct sigaction *restrict));
+
+# elif !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@
+
+#  define sa_sigaction sa_handler
+
+# endif /* !@HAVE_SIGACTION@, !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ */
+
+_GL_CXXALIAS_SYS (sigaction, int, (int, const struct sigaction *restrict,
+                                   struct sigaction *restrict));
+_GL_CXXALIASWARN (sigaction);
+
+#elif defined GNULIB_POSIXCHECK
+# undef sigaction
+# if HAVE_RAW_DECL_SIGACTION
+_GL_WARN_ON_USE (sigaction, "sigaction is unportable - "
+                 "use the gnulib module sigaction for portability");
+# endif
+#endif
+
+/* Some systems don't have SA_NODEFER.  */
+#ifndef SA_NODEFER
+# define SA_NODEFER 0
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_SIGNAL_H */
+#endif /* _@GUARD_PREFIX@_SIGNAL_H */
+#endif
diff --git a/src/grep/lib/sigsegv.c b/src/grep/lib/sigsegv.c
new file mode 100644
index 0000000..998c827
--- /dev/null
+++ b/src/grep/lib/sigsegv.c
@@ -0,0 +1,1374 @@
+/* Page fault handling library.
+   Copyright (C) 1993-2021 Free Software Foundation, Inc.
+   Copyright (C) 2018  Nylon Chen <nylon7@andestech.com>
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible and Nylon Chen.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "sigsegv.h"
+
+#include <errno.h>
+#include <stdio.h> /* declares perror */
+#include <stdint.h> /* defines uintptr_t */
+#include <stdlib.h>
+#include <signal.h>
+#if HAVE_GETRLIMIT
+# include <sys/resource.h> /* declares struct rlimit */
+#endif
+
+#ifdef __OpenBSD__
+# include <sys/param.h> /* defines macro OpenBSD */
+#endif
+
+
+/* Version number.  */
+int libsigsegv_version = LIBSIGSEGV_VERSION;
+
+
+/* ======================= Fault handler information ======================= */
+
+/* Define:
+
+     SIGSEGV_FAULT_HANDLER_ARGLIST
+          is the argument list for the actual fault handler.
+
+   and if available (optional):
+
+     SIGSEGV_FAULT_ADDRESS
+          is a macro for fetching the fault address.
+
+     SIGSEGV_FAULT_CONTEXT
+          is a macro giving a pointer to the entire fault context (i.e.
+          the register set etc.).
+
+     SIGSEGV_FAULT_STACKPOINTER
+          is a macro for fetching the stackpointer at the moment the fault
+          occurred.
+ */
+
+#if defined __linux__ || defined __ANDROID__ /* Linux */
+
+# define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, siginfo_t *sip, void *ucp
+# define SIGSEGV_FAULT_ADDRESS  sip->si_addr
+# define SIGSEGV_FAULT_CONTEXT  ((ucontext_t *) ucp)
+# define SIGSEGV_FAULT_ADDRESS_FROM_SIGINFO
+
+# if defined __alpha__
+
+/* See glibc/sysdeps/unix/sysv/linux/alpha/sys/ucontext.h
+   and the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/alpha/sigcontextinfo.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/alpha/sys/ucontext.h
+   and the 'struct sigcontext' defined in <asm/sigcontext.h>
+   are actually the same.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.sc_regs[30]
+
+# elif defined __arm64__ /* 64-bit */
+
+/* See glibc/sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h
+   and the 'struct sigcontext' defined in <asm/sigcontext.h>
+   are actually the same.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.sp
+
+# elif defined __arm__ || defined __armhf__ /* 32-bit */
+
+/* See glibc/sysdeps/unix/sysv/linux/arm/sys/ucontext.h
+   and the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/arm/sys/ucontext.h
+   and the 'struct sigcontext' defined in <asm/sigcontext.h>
+   are actually the same.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.arm_sp
+
+# elif defined __cris__
+
+/* See glibc-ports/sysdeps/unix/sysv/linux/cris/sys/ucontext.h.
+   Note that the 'mcontext_t' defined in
+   glibc-ports/sysdeps/unix/sysv/linux/cris/sys/ucontext.h
+   and the 'struct sigcontext' defined in <asm/sigcontext.h>
+   are actually the same.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.usp
+
+# elif defined __hppa__
+
+/* See glibc/sysdeps/unix/sysv/linux/hppa/sys/ucontext.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/hppa/sys/ucontext.h
+   and the 'struct sigcontext' defined in <asm/sigcontext.h>
+   are actually the same.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.sc_gr[30]
+
+# elif defined __x86_64__ /* 64 bit registers */
+
+/* See glibc/sysdeps/unix/sysv/linux/x86/sys/ucontext.h
+   and the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/x86_64/sigcontextinfo.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/x86/sys/ucontext.h
+   and the 'struct sigcontext' defined in
+   glibc/sysdeps/unix/sysv/linux/x86/bits/sigcontext.h
+   (see also <asm/sigcontext.h>)
+   are effectively the same.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.gregs[REG_RSP]
+
+# elif defined __i386__ /* 32 bit registers */
+
+/* See glibc/sysdeps/unix/sysv/linux/x86/sys/ucontext.h
+   and the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/i386/sigcontextinfo.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/x86/sys/ucontext.h
+   and the 'struct sigcontext_ia32' defined in <asm/sigcontext32.h>
+   are effectively the same.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.gregs[REG_ESP]
+                     /* same value as ((ucontext_t *) ucp)->uc_mcontext.gregs[REG_UESP] */
+
+# elif defined __ia64__
+
+/* See glibc/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h
+   and the 'struct sigcontext' defined in
+   glibc/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h
+   (see also <asm/sigcontext.h>)
+   are actually the same.  */
+
+/* IA-64 has two stack pointers, one that grows down, called $r12, and one
+   that grows up, called $bsp/$bspstore.  */
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.sc_gr[12]
+
+/* It would be better to access $bspstore instead of $bsp but I don't know
+   where to find it in 'struct sigcontext'.  Anyway, it doesn't matter
+   because $bsp and $bspstore never differ by more than ca. 1 KB.  */
+#  define SIGSEGV_FAULT_BSP_POINTER  ((ucontext_t *) ucp)->uc_mcontext.sc_ar_bsp
+
+# elif defined __m68k__
+
+/* See glibc/sysdeps/unix/sysv/linux/m68k/sys/ucontext.h
+   and the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/m68k/sigcontextinfo.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/m68k/sys/ucontext.h
+   and the 'struct sigcontext' defined in <asm/sigcontext.h>
+   are quite different types.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.gregs[R_SP]
+
+# elif defined __mips__ || defined __mipsn32__ || defined __mips64__
+
+/* See glibc/sysdeps/unix/sysv/linux/mips/sys/ucontext.h
+   and the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/mips/sigcontextinfo.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/mips/sys/ucontext.h
+   and the 'struct sigcontext' defined in
+   glibc/sysdeps/unix/sysv/linux/mips/bits/sigcontext.h
+   (see also <asm/sigcontext.h>)
+   are effectively the same.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.gregs[29]
+
+# elif defined __nds32__
+
+/* See glibc/sysdeps/unix/sysv/linux/nds32/sys/ucontext.h
+   and the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/nds32/sigcontextinfo.h.
+   Both are found in <https://patches-gcc.linaro.org/cover/4409/> part 08/11
+   <https://sourceware.org/ml/libc-alpha/2018-05/msg00125.html>.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.nds32_sp
+
+# elif defined __powerpc__ || defined __powerpc64__ || defined __powerpc64_elfv2__
+
+/* See glibc/sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
+   and the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/powerpc/sigcontextinfo.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h,
+   the 'struct sigcontext' defined in <asm/sigcontext.h>,
+   and the 'struct pt_regs' defined in <asm/ptrace.h>
+   are quite different types.  */
+
+#  if defined __powerpc64__ || defined __powerpc64_elfv2__ /* 64-bit */
+#   define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.gp_regs[1]
+#  else /* 32-bit */
+/* both should be equivalent */
+#   if 0
+#    define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.regs->gpr[1]
+#   else
+#    define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.uc_regs->gregs[1]
+#   endif
+#  endif
+
+# elif defined __riscv32__ || __riscv64__
+
+/* See glibc/sysdeps/unix/sysv/linux/riscv/sys/ucontext.h
+   and the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/riscv/sys/ucontext.h
+   and the 'struct sigcontext' defined in
+   glibc/sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h
+   start with the same block of 32 general-purpose registers.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.__gregs[REG_SP]
+
+# elif defined __s390__ || defined __s390x__
+
+/* See glibc/sysdeps/unix/sysv/linux/s390/sys/ucontext.h
+   and the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/s390/sigcontextinfo.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/s390/sys/ucontext.h
+   and the '_sigregs' type, indirect part of 'struct sigcontext', defined
+   in <asm/sigcontext.h>, are effectively the same.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.gregs[15]
+
+# elif defined __sh__
+
+/* See glibc/sysdeps/unix/sysv/linux/sh/sys/ucontext.h
+   and the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/sh/sigcontextinfo.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/sh/sys/ucontext.h
+   and the 'struct sigcontext' defined in <asm/sigcontext.h>
+   are effectively the same.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.gregs[15]
+
+# elif defined __sparc__ || defined __sparc64__
+
+/* See glibc/sysdeps/unix/sysv/linux/sparc/sys/ucontext.h
+   and the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/sparc/{sparc32,sparc64}/sigcontextinfo.h.
+   Note that the 'mcontext_t' defined in
+   glibc/sysdeps/unix/sysv/linux/sparc/sys/ucontext.h
+   and the 'struct sigcontext' defined in
+   glibc/sysdeps/unix/sysv/linux/sparc/bits/sigcontext.h
+   (see also <asm/sigcontext.h>)
+   are quite different types.  */
+
+#  if defined __sparc64__/* 64-bit */
+/* From linux-4.8.1/arch/sparc/kernel/signal_64.c, function setup_rt_frame, we
+   see that ucp is not an 'ucontext_t *' but rather a 'struct sigcontext *'
+   that happens to have the same value as sip (which is possible because a
+   'struct sigcontext' starts with 128 bytes room for the siginfo_t).  */
+#   define SIGSEGV_FAULT_STACKPOINTER  (((struct sigcontext *) ucp)->sigc_regs.u_regs[14] + 2047)
+#  else /* 32-bit */
+/* From linux-4.8.1/arch/sparc/kernel/signal_32.c, function setup_rt_frame,
+   and linux-4.8.1/arch/sparc/kernel/signal32.c, function setup_rt_frame32, we
+   see that ucp is a 'struct pt_regs *' or 'struct pt_regs32 *', respectively.
+   In userland, this is a 'struct sigcontext *'.  */
+#   define SIGSEGV_FAULT_STACKPOINTER  ((struct sigcontext *) ucp)->si_regs.u_regs[14]
+#  endif
+
+/* The sip->si_addr field is correct for a normal fault, but unusable in case
+   of a stack overflow. What I observe (when running
+   tests/test-sigsegv-catch-stackoverflow1, with a printf right at the beginning
+   of sigsegv_handler) is that sip->si_addr is near 0:
+     - in 64-bit mode: sip->si_addr = 0x000000000000030F, and gdb shows me that
+       the fault occurs in an instruction 'stx %o3,[%fp+0x30f]' and %fp is 0.
+       In fact, all registers %l0..%l7 and %i0..%i7 are 0.
+     - in 32-bit mode: sip->si_addr = 0xFFFFFA64, and gdb shows me that
+       the fault occurs in an instruction 'st %g2,[%fp-1436]' and %fp is 0.
+       In fact, all registers %l0..%l7 and %i0..%i7 are 0.
+   Apparently when the stack overflow occurred, some trap has tried to move the
+   contents of the registers %l0..%l7 and %i0..%i7 (a "window" in SPARC
+   terminology) to the stack, did not succeed in doing this, replaced all these
+   register values with 0, and resumed execution at the fault location. This
+   time, due to %fp = 0, a different fault was triggered. Now it is impossible
+   to determine the real (previous) fault address because, even if know the
+   faulting instruction, the previous register values have been lost.  */
+#  define BOGUS_FAULT_ADDRESS_UPON_STACK_OVERFLOW
+
+# else
+
+/* When adding support for other CPUs here:  */
+
+/* For SIGSEGV_FAULT_HANDLER_ARGLIST, see the definition of SIGCONTEXT in
+   glibc/sysdeps/unix/sysv/linux/<cpu>/sigcontextinfo.h.  */
+
+/* For SIGSEGV_FAULT_STACKPOINTER, see the definition of GET_STACK in
+   glibc/sysdeps/unix/sysv/linux/<cpu>/sigcontextinfo.h.  */
+
+# endif
+
+#endif
+
+#if defined __GNU__ /* Hurd */
+
+# define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, int code, struct sigcontext *scp
+# define SIGSEGV_FAULT_ADDRESS  (unsigned long) code
+# define SIGSEGV_FAULT_CONTEXT  scp
+
+# if defined __i386__
+
+/* scp points to a 'struct sigcontext' (defined in
+   glibc/sysdeps/mach/hurd/i386/bits/sigcontext.h).
+   The registers of this struct get pushed on the stack through
+   gnumach/i386/i386/locore.S:trapall.  */
+/* Both sc_esp and sc_uesp appear to have the same value.
+   It appears more reliable to use sc_uesp because it is labelled as
+   "old esp, if trapped from user".  */
+#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_uesp
+
+# endif
+
+#endif
+
+#if defined __FreeBSD_kernel__ || defined __FreeBSD__ || defined __DragonFly__ /* GNU/kFreeBSD, FreeBSD */
+
+# if defined __arm__ || defined __armhf__ || defined __arm64__
+
+#  define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, siginfo_t *sip, void *ucp
+#  define SIGSEGV_FAULT_ADDRESS  sip->si_addr
+#  define SIGSEGV_FAULT_CONTEXT  ((ucontext_t *) ucp)
+
+#  if defined __arm64__ /* 64-bit */
+
+/* See sys/arm64/include/ucontext.h.  */
+
+#   define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.mc_gpregs.gp_sp
+
+#  elif defined __arm__ || defined __armhf__ /* 32-bit */
+
+/* See sys/arm/include/ucontext.h.  */
+
+#   define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.__gregs[_REG_SP]
+
+#  endif
+
+# else
+
+/* On FreeBSD 12, both of these approaches work.  On FreeBSD derivatives, the
+   first one has more chances to work.  */
+#  if 1
+/* Use signal handlers without SA_SIGINFO.  */
+
+#   define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, int code, struct sigcontext *scp, void *addr
+#   define SIGSEGV_FAULT_ADDRESS  addr
+#   define SIGSEGV_FAULT_CONTEXT  scp
+
+/* See sys/x86/include/signal.h.  */
+
+#   if defined __x86_64__
+/* 64 bit registers */
+
+#    define SIGSEGV_FAULT_STACKPOINTER  scp->sc_rsp
+
+#   elif defined __i386__
+/* 32 bit registers */
+
+#    define SIGSEGV_FAULT_STACKPOINTER  scp->sc_esp
+
+#   endif
+
+#  else
+/* Use signal handlers with SA_SIGINFO.  */
+
+#   define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, siginfo_t *sip, void *scp
+#   define SIGSEGV_FAULT_ADDRESS  sip->si_addr
+#   define SIGSEGV_FAULT_CONTEXT  ((struct sigcontext *) scp)
+#   define SIGSEGV_FAULT_ADDRESS_FROM_SIGINFO
+
+/* See sys/x86/include/signal.h.  */
+
+#   if defined __x86_64__
+/* 64 bit registers */
+
+#    define SIGSEGV_FAULT_STACKPOINTER  ((struct sigcontext *) scp)->sc_rsp
+
+#   elif defined __i386__
+/* 32 bit registers */
+
+#    define SIGSEGV_FAULT_STACKPOINTER  ((struct sigcontext *) scp)->sc_esp
+
+#   endif
+
+#  endif
+
+# endif
+
+#endif
+
+#if defined __NetBSD__ /* NetBSD */
+
+# define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, siginfo_t *sip, void *ucp
+# define SIGSEGV_FAULT_ADDRESS  sip->si_addr
+# define SIGSEGV_FAULT_CONTEXT  ((ucontext_t *) ucp)
+# define SIGSEGV_FAULT_ADDRESS_FROM_SIGINFO
+
+/* _UC_MACHINE_SP is a platform independent macro.
+   Defined in <machine/mcontext.h>, see
+     http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/arch/$arch/include/mcontext.h
+   Supported on alpha, amd64, i386, ia64, m68k, mips, powerpc, sparc since
+   NetBSD 2.0.
+   On i386, _UC_MACHINE_SP is the same as ->uc_mcontext.__gregs[_REG_UESP],
+   and apparently the same value as       ->uc_mcontext.__gregs[_REG_ESP]. */
+# ifdef _UC_MACHINE_SP
+#  define SIGSEGV_FAULT_STACKPOINTER  _UC_MACHINE_SP ((ucontext_t *) ucp)
+# endif
+
+#endif
+
+#if defined __OpenBSD__ /* OpenBSD */
+
+# define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, siginfo_t *sip, struct sigcontext *scp
+# define SIGSEGV_FAULT_ADDRESS  sip->si_addr
+# define SIGSEGV_FAULT_CONTEXT  scp
+# define SIGSEGV_FAULT_ADDRESS_FROM_SIGINFO
+
+# if defined __alpha__
+
+/* See the definition of 'struct sigcontext' in
+   openbsd-src/sys/arch/alpha/include/signal.h.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_regs[30]
+
+# elif defined __arm__ || defined __armhf__
+
+/* See the definition of 'struct sigcontext' in
+   openbsd-src/sys/arch/arm/include/signal.h.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_usr_sp
+
+# elif defined __hppa__ || defined __hppa64__
+
+/* See the definition of 'struct sigcontext' in
+   openbsd-src/sys/arch/hppa/include/signal.h
+   and
+   openbsd-src/sys/arch/hppa64/include/signal.h.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_regs[30]
+
+# elif defined __x86_64__
+/* 64 bit registers */
+
+/* See the definition of 'struct sigcontext' in
+   openbsd-src/sys/arch/amd64/include/signal.h.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_rsp
+
+# elif defined __i386__
+/* 32 bit registers */
+
+/* See the definition of 'struct sigcontext' in
+   openbsd-src/sys/arch/i386/include/signal.h.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_esp
+
+# elif defined __m68k__
+
+/* See the definition of 'struct sigcontext' in
+   openbsd-src/sys/arch/m68k/include/signal.h.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_sp
+
+# elif defined __m88k__
+
+/* See the definition of 'struct sigcontext' in
+   openbsd-src/sys/arch/m88k/include/signal.h
+   and the definition of 'struct reg' in
+   openbsd-src/sys/arch/m88k/include/reg.h.  */
+
+#  if OpenBSD >= 201211 /* OpenBSD version >= 5.2 */
+#   define SIGSEGV_FAULT_STACKPOINTER  scp->sc_regs[31]
+#  else
+#   define SIGSEGV_FAULT_STACKPOINTER  scp->sc_regs.r[31]
+#  endif
+
+# elif defined __mips__ || defined __mipsn32__ || defined __mips64__
+
+/* See the definition of 'struct sigcontext' in
+   openbsd-src/sys/arch/mips64/include/signal.h.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_regs[29]
+
+# elif defined __powerpc__ || defined __powerpc64__
+
+/* See the definition of 'struct sigcontext' and 'struct trapframe' in
+   openbsd-src/sys/arch/powerpc/include/signal.h.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_frame.fixreg[1]
+
+# elif defined __sh__
+
+/* See the definition of 'struct sigcontext' in
+   openbsd-src/sys/arch/sh/include/signal.h
+   and the definition of 'struct reg' in
+   openbsd-src/sys/arch/sh/include/reg.h.  */
+
+#  if OpenBSD >= 201211 /* OpenBSD version >= 5.2 */
+#   define SIGSEGV_FAULT_STACKPOINTER  scp->sc_reg[20-15]
+#  else
+#   define SIGSEGV_FAULT_STACKPOINTER  scp->sc_reg.r_r15
+#  endif
+
+# elif defined __sparc__ || defined __sparc64__
+
+/* See the definition of 'struct sigcontext' in
+   openbsd-src/sys/arch/sparc/include/signal.h
+   and
+   openbsd-src/sys/arch/sparc64/include/signal.h.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_sp
+
+# elif defined __vax__
+
+/* See the definition of 'struct sigcontext' in
+   openbsd-src/sys/arch/vax/include/signal.h.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_sp
+
+# endif
+
+#endif
+
+#if (defined __APPLE__ && defined __MACH__) /* macOS */
+
+# define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, siginfo_t *sip, void *ucp
+# define SIGSEGV_FAULT_ADDRESS  sip->si_addr
+# define SIGSEGV_FAULT_CONTEXT  ((ucontext_t *) ucp)
+# define SIGSEGV_FAULT_ADDRESS_FROM_SIGINFO
+
+# if defined __x86_64__
+
+/* See the definitions of
+     - 'ucontext_t' and 'struct __darwin_ucontext' in <sys/_types/_ucontext.h>,
+     - 'struct __darwin_mcontext64' in <i386/_mcontext.h>, and
+     - 'struct __darwin_x86_thread_state64' in <mach/i386/_structs.h>.  */
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext->__ss.__rsp
+
+# elif defined __i386__
+
+/* See the definitions of
+     - 'ucontext_t' and 'struct __darwin_ucontext' in <sys/_types/_ucontext.h>,
+     - 'struct __darwin_mcontext32' in <i386/_mcontext.h>, and
+     - 'struct __darwin_i386_thread_state' in <mach/i386/_structs.h>.  */
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext->__ss.__esp
+
+# elif defined __arm64__
+
+/* See the definitions of
+     - 'ucontext_t' and 'struct __darwin_ucontext' in <sys/_types/_ucontext.h>,
+     - 'struct __darwin_mcontext64' in <arm/_mcontext.h>, and
+     - 'struct __darwin_arm_thread_state64' in <mach/arm/_structs.h>.  */
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext->__ss.__sp
+
+# elif defined __powerpc__
+
+/* See the definitions of
+     - 'ucontext_t' and 'struct __darwin_ucontext' in <sys/_structs.h>,
+     - 'struct __darwin_mcontext' in <ppc/_structs.h>, and
+     - 'struct __darwin_ppc_thread_state' in <mach/ppc/_structs.h>.  */
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext->__ss.__r1
+
+# endif
+
+#endif
+
+#if defined _AIX /* AIX */
+
+# define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, siginfo_t *sip, void *ucp
+# define SIGSEGV_FAULT_ADDRESS  sip->si_addr
+# define SIGSEGV_FAULT_CONTEXT  ((ucontext_t *) ucp)
+# define SIGSEGV_FAULT_ADDRESS_FROM_SIGINFO
+
+# if defined __powerpc__ || defined __powerpc64__
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.jmp_context.gpr[1]
+# endif
+
+#endif
+
+#if defined __sgi /* IRIX */
+
+# define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, int code, struct sigcontext *scp
+# define SIGSEGV_FAULT_ADDRESS  (unsigned long) scp->sc_badvaddr
+# define SIGSEGV_FAULT_CONTEXT  scp
+
+# if defined __mips__ || defined __mipsn32__ || defined __mips64__
+#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_regs[29]
+# endif
+
+#endif
+
+#if defined __sun /* Solaris */
+
+# define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, siginfo_t *sip, void *ucp
+# define SIGSEGV_FAULT_ADDRESS  sip->si_addr
+# define SIGSEGV_FAULT_CONTEXT  ((ucontext_t *) ucp)
+# define SIGSEGV_FAULT_ADDRESS_FROM_SIGINFO
+
+# if defined __x86_64__
+/* 64 bit registers */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.gregs[REG_RSP]
+
+# elif defined __i386__
+/* 32 bit registers */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.gregs[ESP]
+
+# elif defined __sparc__ || defined __sparc64__
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.gregs[REG_O6]
+
+#  if SOLARIS11
+
+/* On Solaris 11.3/SPARC, both in 32-bit and 64-bit mode, when catching
+   stack overflow, the fault address is correct the first time, but is zero
+   or near zero the second time.
+   'truss tests/test-sigsegv-catch-stackoverflow1' shows it:
+
+   In 32-bit mode:
+
+    Incurred fault #6, FLTBOUNDS  %pc = 0x000116E8
+      siginfo: SIGSEGV SEGV_MAPERR addr=0xFFB00000
+    Received signal #11, SIGSEGV [caught]
+      siginfo: SIGSEGV SEGV_MAPERR addr=0xFFB00000
+   then
+    Incurred fault #6, FLTBOUNDS  %pc = 0x000116E8
+      siginfo: SIGSEGV SEGV_MAPERR addr=0x00000008
+    Received signal #11, SIGSEGV [caught]
+      siginfo: SIGSEGV SEGV_MAPERR addr=0x00000008
+
+   In 64-bit mode:
+
+    Incurred fault #6, FLTBOUNDS  %pc = 0x100001C58
+      siginfo: SIGSEGV SEGV_MAPERR addr=0xFFFFFFFF7FF00000
+    Received signal #11, SIGSEGV [caught]
+      siginfo: SIGSEGV SEGV_MAPERR addr=0xFFFFFFFF7FF00000
+   then
+    Incurred fault #6, FLTBOUNDS  %pc = 0x100001C58
+      siginfo: SIGSEGV SEGV_MAPERR addr=0x00000000
+    Received signal #11, SIGSEGV [caught]
+      siginfo: SIGSEGV SEGV_MAPERR addr=0x00000000
+ */
+#   define BOGUS_FAULT_ADDRESS_UPON_STACK_OVERFLOW
+
+#  endif
+
+# endif
+
+#endif
+
+#if defined __CYGWIN__ /* Cygwin */
+
+# define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, siginfo_t *sip, void *ucp
+# define SIGSEGV_FAULT_ADDRESS  sip->si_addr
+# define SIGSEGV_FAULT_CONTEXT  ((ucontext_t *) ucp)
+# define SIGSEGV_FAULT_ADDRESS_FROM_SIGINFO
+
+/* See the definition of 'ucontext_t' in <sys/ucontext.h> and
+   of 'struct __mcontext' in <cygwin/signal.h>.  */
+# if defined __x86_64__
+/* 64 bit registers */
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.rsp
+# elif defined __i386__
+/* 32 bit registers */
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.esp
+# endif
+
+#endif
+
+#if defined __HAIKU__ /* Haiku */
+
+# define SIGSEGV_FAULT_HANDLER_ARGLIST  int sig, siginfo_t *sip, void *ucp
+# define SIGSEGV_FAULT_ADDRESS  sip->si_addr
+# define SIGSEGV_FAULT_CONTEXT  ((ucontext_t *) ucp)
+# define SIGSEGV_FAULT_ADDRESS_FROM_SIGINFO
+
+# if defined __x86_64__
+/* 64 bit registers */
+
+/* See the definition of 'ucontext_t' in <signal.h> and
+   of 'struct vregs' in <arch/x86_64/signal.h>.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.rsp
+
+# elif defined __i386__
+/* 32 bit registers */
+
+/* See the definition of 'ucontext_t' in <signal.h> and
+   of 'struct vregs' in <arch/x86/signal.h>.  */
+
+#  define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.esp
+
+# endif
+
+#endif
+
+/* ========================================================================== */
+
+/* List of signals that are sent when an invalid virtual memory address
+   is accessed, or when the stack overflows.  */
+#if defined __GNU__ \
+    || defined __FreeBSD_kernel__ || defined __FreeBSD__ || defined __DragonFly__ \
+    || defined __NetBSD__ || defined __OpenBSD__ \
+    || (defined __APPLE__ && defined __MACH__)
+# define SIGSEGV_FOR_ALL_SIGNALS(var,body) \
+    { int var; var = SIGSEGV; { body } var = SIGBUS; { body } }
+#else
+# define SIGSEGV_FOR_ALL_SIGNALS(var,body) \
+    { int var; var = SIGSEGV; { body } }
+#endif
+
+/* ========================================================================== */
+
+/* Determine the virtual memory area of a given address.  */
+#include "stackvma.h"
+
+/* ========================================================================== */
+
+/* On the average Unix platform, we define
+
+   HAVE_SIGSEGV_RECOVERY
+       if there is a fault-*.h include file which defines
+       SIGSEGV_FAULT_HANDLER_ARGLIST and SIGSEGV_FAULT_ADDRESS.
+
+   HAVE_STACK_OVERFLOW_RECOVERY
+       if HAVE_SIGALTSTACK is set and
+       at least two of the following are true:
+       A) There is a fault-*.h include file which defines
+          SIGSEGV_FAULT_HANDLER_ARGLIST and SIGSEGV_FAULT_ADDRESS.
+       B) There is a fault-*.h include file which defines
+          SIGSEGV_FAULT_HANDLER_ARGLIST and SIGSEGV_FAULT_STACKPOINTER.
+       C) There is a stackvma-*.c, other than stackvma-none.c, which
+          defines sigsegv_get_vma.
+
+   Why? Obviously, to catch stack overflow, we need an alternate signal
+   stack; this requires kernel support. But we also need to distinguish
+   (with a reasonable confidence) a stack overflow from a regular SIGSEGV.
+   If we have A) and B), we use the
+     Heuristic AB: If the fault address is near the stack pointer, it's a
+     stack overflow.
+   If we have A) and C), we use the
+     Heuristic AC: If the fault address is near and beyond the bottom of
+     the stack's virtual memory area, it's a stack overflow.
+   If we have B) and C), we use the
+     Heuristic BC: If the stack pointer is near the bottom of the stack's
+     virtual memory area, it's a stack overflow.
+     This heuristic comes in two flavours: On OSes which let the stack's
+     VMA grow continuously, we determine the bottom by use of getrlimit().
+     On OSes which preallocate the stack's VMA with its maximum size
+     (like BeOS), we use the stack's VMA directly.
+ */
+
+#if HAVE_SIGSEGV_RECOVERY \
+     && !(defined SIGSEGV_FAULT_HANDLER_ARGLIST && defined SIGSEGV_FAULT_ADDRESS)
+# error "You need to define SIGSEGV_FAULT_HANDLER_ARGLIST and SIGSEGV_FAULT_ADDRESS before you can define HAVE_SIGSEGV_RECOVERY."
+#endif
+#if !HAVE_SIGSEGV_RECOVERY \
+    && (defined SIGSEGV_FAULT_HANDLER_ARGLIST && defined SIGSEGV_FAULT_ADDRESS) \
+    && !(defined __FreeBSD__ && (defined __sparc__ || defined __sparc64__))
+# if __GNUC__ || (__clang_major__ >= 4)
+#  warning "You can define HAVE_SIGSEGV_RECOVERY on this platform."
+# else
+#  error "You can define HAVE_SIGSEGV_RECOVERY on this platform."
+# endif
+#endif
+
+#if HAVE_STACK_OVERFLOW_RECOVERY \
+    && !(defined SIGSEGV_FAULT_ADDRESS + defined SIGSEGV_FAULT_STACKPOINTER + HAVE_STACKVMA >= 2)
+# error "You need to define two of SIGSEGV_FAULT_ADDRESS, SIGSEGV_FAULT_STACKPOINTER, HAVE_STACKVMA, before you can define HAVE_STACK_OVERFLOW_RECOVERY."
+#endif
+#if !HAVE_STACK_OVERFLOW_RECOVERY \
+    && (defined SIGSEGV_FAULT_ADDRESS + defined SIGSEGV_FAULT_STACKPOINTER + HAVE_STACKVMA >= 2) \
+    && !(defined __FreeBSD__ && (defined __sparc__ || defined __sparc64__)) \
+    && !(defined __NetBSD__ && (defined __sparc__ || defined __sparc64__))
+# if __GNUC__ || (__clang_major__ >= 4)
+#  warning "You can define HAVE_STACK_OVERFLOW_RECOVERY on this platform."
+# else
+#  error "You can define HAVE_STACK_OVERFLOW_RECOVERY on this platform."
+# endif
+#endif
+
+/* ========================================================================== */
+
+#if HAVE_STACK_OVERFLOW_RECOVERY
+
+/* ======= Leaving a signal handler executing on the alternate stack ======= */
+
+/* Platform dependent:
+   Leaving a signal handler executing on the alternate stack.  */
+static void sigsegv_reset_onstack_flag (void);
+
+/* -------------------------- leave-sigaltstack.c -------------------------- */
+
+# if defined __GNU__ \
+     || defined __FreeBSD_kernel__ || defined __FreeBSD__ || defined __DragonFly__ \
+     || defined __NetBSD__ || defined __OpenBSD__
+
+static void
+sigsegv_reset_onstack_flag (void)
+{
+  stack_t ss;
+
+  if (sigaltstack (NULL, &ss) >= 0)
+    {
+      ss.ss_flags &= ~SS_ONSTACK;
+      sigaltstack (&ss, NULL);
+    }
+}
+
+/* --------------------------- leave-setcontext.c --------------------------- */
+
+# elif defined __sgi || defined __sun /* IRIX, Solaris */
+
+#  include <ucontext.h>
+
+static void
+sigsegv_reset_onstack_flag (void)
+{
+  ucontext_t uc;
+
+  if (getcontext (&uc) >= 0)
+    /* getcontext returns twice.  We are interested in the returned context
+       only the first time, i.e. when the SS_ONSTACK bit is set.  */
+    if (uc.uc_stack.ss_flags & SS_ONSTACK)
+      {
+        uc.uc_stack.ss_flags &= ~SS_ONSTACK;
+        /* Note that setcontext() does not refill uc.  Therefore if
+           setcontext() keeps SS_ONSTACK set in the kernel, either
+           setcontext() will return -1 or getcontext() will return a
+           second time, with the SS_ONSTACK bit being cleared.  */
+        setcontext (&uc);
+      }
+}
+
+/* ------------------------------ leave-nop.c ------------------------------ */
+
+# else
+
+static void
+sigsegv_reset_onstack_flag (void)
+{
+  /* Nothing to do. sigaltstack() simply looks at the stack pointer,
+     therefore SS_ONSTACK is not sticky.  */
+}
+
+# endif
+
+/* ========================================================================== */
+
+# if HAVE_STACKVMA
+
+/* Address of the last byte belonging to the stack vma.  */
+static uintptr_t stack_top = 0;
+
+/* Needs to be called once only.  */
+static void
+remember_stack_top (void *some_variable_on_stack)
+{
+  struct vma_struct vma;
+
+  if (sigsegv_get_vma ((uintptr_t) some_variable_on_stack, &vma) >= 0)
+    stack_top = vma.end - 1;
+}
+
+# endif /* HAVE_STACKVMA */
+
+static stackoverflow_handler_t stk_user_handler = (stackoverflow_handler_t)NULL;
+static uintptr_t stk_extra_stack;
+static size_t stk_extra_stack_size;
+
+#endif /* HAVE_STACK_OVERFLOW_RECOVERY */
+
+#if HAVE_SIGSEGV_RECOVERY
+
+/* User's SIGSEGV handler.  */
+static sigsegv_handler_t user_handler = (sigsegv_handler_t)NULL;
+
+#endif /* HAVE_SIGSEGV_RECOVERY */
+
+
+/* Our SIGSEGV handler, with OS dependent argument list.  */
+
+#if HAVE_SIGSEGV_RECOVERY
+
+static void
+sigsegv_handler (SIGSEGV_FAULT_HANDLER_ARGLIST)
+{
+  void *address = (void *) (SIGSEGV_FAULT_ADDRESS);
+
+# if HAVE_STACK_OVERFLOW_RECOVERY
+#  if !(HAVE_STACKVMA || defined SIGSEGV_FAULT_STACKPOINTER)
+#error "Insufficient heuristics for detecting a stack overflow.  Either define CFG_STACKVMA and HAVE_STACKVMA correctly, or define SIGSEGV_FAULT_STACKPOINTER correctly, or undefine HAVE_STACK_OVERFLOW_RECOVERY!"
+#  endif
+
+  /* Call user's handler.  */
+  if (user_handler && (*user_handler) (address, 0))
+    {
+      /* Handler successful.  */
+    }
+  else
+    {
+      /* Handler declined responsibility.  */
+
+      /* Did the user install a stack overflow handler?  */
+      if (stk_user_handler)
+        {
+          /* See whether it was a stack overflow. If so, longjump away.  */
+#  ifdef SIGSEGV_FAULT_STACKPOINTER
+          uintptr_t old_sp = (uintptr_t) (SIGSEGV_FAULT_STACKPOINTER);
+#   ifdef __ia64
+          uintptr_t old_bsp = (uintptr_t) (SIGSEGV_FAULT_BSP_POINTER);
+#   endif
+#  endif
+
+#  if HAVE_STACKVMA
+          /* Were we able to determine the stack top?  */
+          if (stack_top)
+            {
+              /* Determine stack bounds.  */
+              int saved_errno;
+              struct vma_struct vma;
+              int ret;
+
+              saved_errno = errno;
+              ret = sigsegv_get_vma (stack_top, &vma);
+              errno = saved_errno;
+              if (ret >= 0)
+                {
+#   ifndef BOGUS_FAULT_ADDRESS_UPON_STACK_OVERFLOW
+                  /* Heuristic AC: If the fault_address is nearer to the stack
+                     segment's [start,end] than to the previous segment, we
+                     consider it a stack overflow.
+                     In the case of IA-64, we know that the previous segment
+                     is the up-growing bsp segment, and either of the two
+                     stacks can overflow.  */
+                  uintptr_t addr = (uintptr_t) address;
+
+#    ifdef __ia64
+                  if (addr >= vma.prev_end && addr <= vma.end - 1)
+#    else
+#     if STACK_DIRECTION < 0
+                  if (addr >= vma.start
+                      ? (addr <= vma.end - 1)
+                      : vma.is_near_this (addr, &vma))
+#     else
+                  if (addr <= vma.end - 1
+                      ? (addr >= vma.start)
+                      : vma.is_near_this (addr, &vma))
+#     endif
+#    endif
+                    {
+#   else /* BOGUS_FAULT_ADDRESS_UPON_STACK_OVERFLOW */
+#    if HAVE_GETRLIMIT && defined RLIMIT_STACK
+                  /* Heuristic BC: If the stack size has reached its maximal size,
+                     and old_sp is near the low end, we consider it a stack
+                     overflow.  */
+                  struct rlimit rl;
+
+                  saved_errno = errno;
+                  ret = getrlimit (RLIMIT_STACK, &rl);
+                  errno = saved_errno;
+                  if (ret >= 0)
+                    {
+                      uintptr_t current_stack_size = vma.end - vma.start;
+                      uintptr_t max_stack_size = rl.rlim_cur;
+                      if (current_stack_size <= max_stack_size + 4096
+                          && max_stack_size <= current_stack_size + 4096
+#    else
+                    {
+                      if (1
+#    endif
+#    ifdef SIGSEGV_FAULT_STACKPOINTER
+                          /* Heuristic BC: If we know old_sp, and it is neither
+                             near the low end, nor in the alternate stack, then
+                             it's probably not a stack overflow.  */
+                          && ((old_sp >= stk_extra_stack
+                               && old_sp <= stk_extra_stack + stk_extra_stack_size)
+#     if STACK_DIRECTION < 0
+                              || (old_sp <= vma.start + 4096
+                                  && vma.start <= old_sp + 4096))
+#     else
+                              || (old_sp <= vma.end + 4096
+                                  && vma.end <= old_sp + 4096))
+#     endif
+#    endif
+                         )
+#   endif /* BOGUS_FAULT_ADDRESS_UPON_STACK_OVERFLOW */
+#  else /* !HAVE_STACKVMA */
+          /* Heuristic AB: If the fault address is near the stack pointer,
+             it's a stack overflow.  */
+          uintptr_t addr = (uintptr_t) address;
+
+          if ((addr <= old_sp + 4096 && old_sp <= addr + 4096)
+#   ifdef __ia64
+              || (addr <= old_bsp + 4096 && old_bsp <= addr + 4096)
+#   endif
+             )
+            {
+                {
+                    {
+#  endif /* !HAVE_STACKVMA */
+                        {
+#  ifdef SIGSEGV_FAULT_STACKPOINTER
+                          int emergency =
+                            (old_sp >= stk_extra_stack
+                             && old_sp <= stk_extra_stack + stk_extra_stack_size);
+                          stackoverflow_context_t context = (SIGSEGV_FAULT_CONTEXT);
+#  else
+                          int emergency = 0;
+                          stackoverflow_context_t context = (void *) 0;
+#  endif
+                          /* Call user's handler.  */
+                          (*stk_user_handler) (emergency, context);
+                        }
+                    }
+                }
+            }
+        }
+# endif /* HAVE_STACK_OVERFLOW_RECOVERY */
+
+      if (user_handler && (*user_handler) (address, 1))
+        {
+          /* Handler successful.  */
+        }
+      else
+        {
+          /* Handler declined responsibility for real.  */
+
+          /* Remove ourselves and dump core.  */
+          SIGSEGV_FOR_ALL_SIGNALS (signo, signal (signo, SIG_DFL);)
+        }
+
+# if HAVE_STACK_OVERFLOW_RECOVERY
+    }
+# endif /* HAVE_STACK_OVERFLOW_RECOVERY */
+}
+
+#elif HAVE_STACK_OVERFLOW_RECOVERY
+
+static void
+# ifdef SIGSEGV_FAULT_STACKPOINTER
+sigsegv_handler (SIGSEGV_FAULT_HANDLER_ARGLIST)
+# else
+sigsegv_handler (int sig)
+# endif
+{
+# if !((HAVE_GETRLIMIT && defined RLIMIT_STACK) || defined SIGSEGV_FAULT_STACKPOINTER)
+#  error "Insufficient heuristics for detecting a stack overflow.  Either define SIGSEGV_FAULT_STACKPOINTER correctly, or undefine HAVE_STACK_OVERFLOW_RECOVERY!"
+# endif
+
+  /* Did the user install a handler?  */
+  if (stk_user_handler)
+    {
+      /* See whether it was a stack overflow.  If so, longjump away.  */
+# ifdef SIGSEGV_FAULT_STACKPOINTER
+      uintptr_t old_sp = (uintptr_t) (SIGSEGV_FAULT_STACKPOINTER);
+# endif
+
+      /* Were we able to determine the stack top?  */
+      if (stack_top)
+        {
+          /* Determine stack bounds.  */
+          int saved_errno;
+          struct vma_struct vma;
+          int ret;
+
+          saved_errno = errno;
+          ret = sigsegv_get_vma (stack_top, &vma);
+          errno = saved_errno;
+          if (ret >= 0)
+            {
+# if HAVE_GETRLIMIT && defined RLIMIT_STACK
+              /* Heuristic BC: If the stack size has reached its maximal size,
+                 and old_sp is near the low end, we consider it a stack
+                 overflow.  */
+              struct rlimit rl;
+
+              saved_errno = errno;
+              ret = getrlimit (RLIMIT_STACK, &rl);
+              errno = saved_errno;
+              if (ret >= 0)
+                {
+                  uintptr_t current_stack_size = vma.end - vma.start;
+                  uintptr_t max_stack_size = rl.rlim_cur;
+                  if (current_stack_size <= max_stack_size + 4096
+                      && max_stack_size <= current_stack_size + 4096
+# else
+                {
+                  if (1
+# endif
+# ifdef SIGSEGV_FAULT_STACKPOINTER
+                      /* Heuristic BC: If we know old_sp, and it is neither
+                         near the low end, nor in the alternate stack, then
+                         it's probably not a stack overflow.  */
+                      && ((old_sp >= stk_extra_stack
+                           && old_sp <= stk_extra_stack + stk_extra_stack_size)
+#  if STACK_DIRECTION < 0
+                          || (old_sp <= vma.start + 4096
+                              && vma.start <= old_sp + 4096))
+#  else
+                          || (old_sp <= vma.end + 4096
+                              && vma.end <= old_sp + 4096))
+#  endif
+# endif
+                     )
+                    {
+# ifdef SIGSEGV_FAULT_STACKPOINTER
+                      int emergency =
+                        (old_sp >= stk_extra_stack
+                         && old_sp <= stk_extra_stack + stk_extra_stack_size);
+                      stackoverflow_context_t context = (SIGSEGV_FAULT_CONTEXT);
+# else
+                      int emergency = 0;
+                      stackoverflow_context_t context = (void *) 0;
+# endif
+                      /* Call user's handler.  */
+                      (*stk_user_handler)(emergency,context);
+                    }
+                }
+            }
+        }
+    }
+
+  /* Remove ourselves and dump core.  */
+  SIGSEGV_FOR_ALL_SIGNALS (signo, signal (signo, SIG_DFL);)
+}
+
+#endif
+
+
+#if HAVE_SIGSEGV_RECOVERY || HAVE_STACK_OVERFLOW_RECOVERY
+
+static void
+install_for (int sig)
+{
+  struct sigaction action;
+
+# ifdef SIGSEGV_FAULT_ADDRESS_FROM_SIGINFO
+  action.sa_sigaction = &sigsegv_handler;
+# else
+  action.sa_handler = (void (*) (int)) &sigsegv_handler;
+# endif
+  /* Block most signals while SIGSEGV is being handled.  */
+  /* Signals SIGKILL, SIGSTOP cannot be blocked.  */
+  /* Signals SIGCONT, SIGTSTP, SIGTTIN, SIGTTOU are not blocked because
+     dealing with these signals seems dangerous.  */
+  /* Signals SIGILL, SIGABRT, SIGFPE, SIGSEGV, SIGTRAP, SIGIOT, SIGEMT, SIGBUS,
+     SIGSYS, SIGSTKFLT are not blocked because these are synchronous signals,
+     which may require immediate intervention, otherwise the process may
+     starve.  */
+  sigemptyset (&action.sa_mask);
+# ifdef SIGHUP
+  sigaddset (&action.sa_mask,SIGHUP);
+# endif
+# ifdef SIGINT
+  sigaddset (&action.sa_mask,SIGINT);
+# endif
+# ifdef SIGQUIT
+  sigaddset (&action.sa_mask,SIGQUIT);
+# endif
+# ifdef SIGPIPE
+  sigaddset (&action.sa_mask,SIGPIPE);
+# endif
+# ifdef SIGALRM
+  sigaddset (&action.sa_mask,SIGALRM);
+# endif
+# ifdef SIGTERM
+  sigaddset (&action.sa_mask,SIGTERM);
+# endif
+# ifdef SIGUSR1
+  sigaddset (&action.sa_mask,SIGUSR1);
+# endif
+# ifdef SIGUSR2
+  sigaddset (&action.sa_mask,SIGUSR2);
+# endif
+# ifdef SIGCHLD
+  sigaddset (&action.sa_mask,SIGCHLD);
+# endif
+# ifdef SIGCLD
+  sigaddset (&action.sa_mask,SIGCLD);
+# endif
+# ifdef SIGURG
+  sigaddset (&action.sa_mask,SIGURG);
+# endif
+# ifdef SIGIO
+  sigaddset (&action.sa_mask,SIGIO);
+# endif
+# ifdef SIGPOLL
+  sigaddset (&action.sa_mask,SIGPOLL);
+# endif
+# ifdef SIGXCPU
+  sigaddset (&action.sa_mask,SIGXCPU);
+# endif
+# ifdef SIGXFSZ
+  sigaddset (&action.sa_mask,SIGXFSZ);
+# endif
+# ifdef SIGVTALRM
+  sigaddset (&action.sa_mask,SIGVTALRM);
+# endif
+# ifdef SIGPROF
+  sigaddset (&action.sa_mask,SIGPROF);
+# endif
+# ifdef SIGPWR
+  sigaddset (&action.sa_mask,SIGPWR);
+# endif
+# ifdef SIGLOST
+  sigaddset (&action.sa_mask,SIGLOST);
+# endif
+# ifdef SIGWINCH
+  sigaddset (&action.sa_mask,SIGWINCH);
+# endif
+  /* Note that sigaction() implicitly adds sig itself to action.sa_mask.  */
+  /* Ask the OS to provide a structure siginfo_t to the handler.  */
+# ifdef SIGSEGV_FAULT_ADDRESS_FROM_SIGINFO
+  action.sa_flags = SA_SIGINFO;
+# else
+  action.sa_flags = 0;
+# endif
+# if HAVE_STACK_OVERFLOW_RECOVERY && HAVE_SIGALTSTACK /* not BeOS */
+  /* Work around Linux 2.2.5 bug: If SA_ONSTACK is specified but sigaltstack()
+     has not been called, the kernel will busy loop, eating CPU time.  So
+     avoid setting SA_ONSTACK until the user has requested stack overflow
+     handling.  */
+  if (stk_user_handler)
+    action.sa_flags |= SA_ONSTACK;
+# endif
+  sigaction (sig, &action, (struct sigaction *) NULL);
+}
+
+#endif /* HAVE_SIGSEGV_RECOVERY || HAVE_STACK_OVERFLOW_RECOVERY */
+
+int
+sigsegv_install_handler (sigsegv_handler_t handler)
+{
+#if HAVE_SIGSEGV_RECOVERY
+  user_handler = handler;
+
+  SIGSEGV_FOR_ALL_SIGNALS (sig, install_for (sig);)
+
+  return 0;
+#else
+  return -1;
+#endif
+}
+
+void
+sigsegv_deinstall_handler (void)
+{
+#if HAVE_SIGSEGV_RECOVERY
+  user_handler = (sigsegv_handler_t)NULL;
+
+# if HAVE_STACK_OVERFLOW_RECOVERY
+  if (!stk_user_handler)
+# endif
+    {
+      SIGSEGV_FOR_ALL_SIGNALS (sig, signal (sig, SIG_DFL);)
+    }
+#endif
+}
+
+int
+sigsegv_leave_handler (void (*continuation) (void*, void*, void*),
+                       void* cont_arg1, void* cont_arg2, void* cont_arg3)
+{
+#if HAVE_STACK_OVERFLOW_RECOVERY
+  /*
+   * Reset the system's knowledge that we are executing on the alternate
+   * stack. If we didn't do that, siglongjmp would be needed instead of
+   * longjmp to leave the signal handler.
+   */
+  sigsegv_reset_onstack_flag ();
+#endif
+  (*continuation) (cont_arg1, cont_arg2, cont_arg3);
+  return 1;
+}
+
+int
+stackoverflow_install_handler (stackoverflow_handler_t handler,
+                               void *extra_stack, size_t extra_stack_size)
+{
+#if HAVE_STACK_OVERFLOW_RECOVERY
+# if HAVE_STACKVMA
+  if (!stack_top)
+    {
+      int dummy;
+      remember_stack_top (&dummy);
+      if (!stack_top)
+        return -1;
+    }
+# endif
+
+  stk_user_handler = handler;
+  stk_extra_stack = (uintptr_t) extra_stack;
+  stk_extra_stack_size = extra_stack_size;
+  {
+    stack_t ss;
+# if SIGALTSTACK_SS_REVERSED
+    ss.ss_sp = (char *) extra_stack + extra_stack_size - sizeof (void *);
+    ss.ss_size = extra_stack_size - sizeof (void *);
+# else
+    ss.ss_sp = extra_stack;
+    ss.ss_size = extra_stack_size;
+# endif
+    ss.ss_flags = 0; /* no SS_DISABLE */
+    if (sigaltstack (&ss, (stack_t*)0) < 0)
+      return -1;
+  }
+
+  /* Install the signal handlers with SA_ONSTACK.  */
+  SIGSEGV_FOR_ALL_SIGNALS (sig, install_for (sig);)
+  return 0;
+#else
+  return -1;
+#endif
+}
+
+void
+stackoverflow_deinstall_handler (void)
+{
+#if HAVE_STACK_OVERFLOW_RECOVERY
+  stk_user_handler = (stackoverflow_handler_t) NULL;
+
+# if HAVE_SIGSEGV_RECOVERY
+  if (user_handler)
+    {
+      /* Reinstall the signal handlers without SA_ONSTACK, to avoid Linux
+         bug.  */
+      SIGSEGV_FOR_ALL_SIGNALS (sig, install_for (sig);)
+    }
+  else
+# endif
+    {
+      SIGSEGV_FOR_ALL_SIGNALS (sig, signal (sig, SIG_DFL);)
+    }
+
+  {
+    stack_t ss;
+    ss.ss_flags = SS_DISABLE;
+    if (sigaltstack (&ss, (stack_t *) 0) < 0)
+      perror ("gnulib sigsegv (stackoverflow_deinstall_handler)");
+  }
+#endif
+}
diff --git a/src/grep/lib/sigsegv.in.h b/src/grep/lib/sigsegv.in.h
new file mode 100644
index 0000000..17ad87e
--- /dev/null
+++ b/src/grep/lib/sigsegv.in.h
@@ -0,0 +1,244 @@
+/* Page fault handling library.
+   Copyright (C) 1998-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible.  */
+
+#ifndef _SIGSEGV_H
+#define _SIGSEGV_H
+
+/* Get size_t.  */
+#include <stddef.h>
+
+/* Define the fault context structure.  */
+#if defined __linux__ || defined __ANDROID__ \
+    || (defined __FreeBSD__ && (defined __arm__ || defined __armhf__ || defined __arm64__)) \
+    || defined __NetBSD__ \
+    || defined _AIX || defined __sun \
+    || defined __CYGWIN__
+/* Linux, FreeBSD, NetBSD, AIX, Solaris, Cygwin */
+# include <ucontext.h>
+#elif (defined __APPLE__ && defined __MACH__)
+/* macOS */
+# include <sys/ucontext.h>
+#elif defined __HAIKU__
+/* Haiku */
+# include <signal.h>
+#endif
+
+/* Correct the value of SIGSTKSZ on some systems.
+   glibc >= 2.34: When _GNU_SOURCE is defined, SIGSTKSZ is no longer a
+   compile-time constant.  But most programs need a simple constant.
+   AIX 64-bit: original value 4096 is too small.
+   HP-UX: original value 8192 is too small.
+   Solaris 11/x86_64: original value 8192 is too small.  */
+#include <signal.h>
+#if __GLIBC__ >= 2
+# undef SIGSTKSZ
+# if defined __ia64__
+#  define SIGSTKSZ 262144
+# else
+#  define SIGSTKSZ 65536
+# endif
+#endif
+#if defined _AIX && defined _ARCH_PPC64
+# undef SIGSTKSZ
+# define SIGSTKSZ 8192
+#endif
+#if defined __hpux || (defined __sun && (defined __x86_64__ || defined __amd64__))
+# undef SIGSTKSZ
+# define SIGSTKSZ 16384
+#endif
+
+/* HAVE_SIGSEGV_RECOVERY
+   is defined if the system supports catching SIGSEGV.  */
+#if defined __linux__ || defined __ANDROID__ || defined __GNU__ \
+    || defined __FreeBSD_kernel__ || (defined __FreeBSD__ && !(defined __sparc__ || defined __sparc64__)) || defined __DragonFly__ \
+    || defined __NetBSD__ \
+    || defined __OpenBSD__ \
+    || (defined __APPLE__ && defined __MACH__) \
+    || defined _AIX || defined __sgi || defined __sun \
+    || defined __CYGWIN__ || defined __HAIKU__
+/* Linux, Hurd, GNU/kFreeBSD, FreeBSD, NetBSD, OpenBSD, macOS, AIX, IRIX, Solaris, Cygwin, Haiku */
+# define HAVE_SIGSEGV_RECOVERY 1
+#endif
+
+/* HAVE_STACK_OVERFLOW_RECOVERY
+   is defined if stack overflow can be caught.  */
+#if defined __linux__ || defined __ANDROID__ || defined __GNU__ \
+    || defined __FreeBSD_kernel__ || (defined __FreeBSD__ && !(defined __sparc__ || defined __sparc64__)) || defined __DragonFly__ \
+    || (defined __NetBSD__ && !(defined __sparc__ || defined __sparc64__)) \
+    || defined __OpenBSD__ \
+    || (defined __APPLE__ && defined __MACH__) \
+    || defined _AIX || defined __sgi || defined __sun \
+    || defined __CYGWIN__ || defined __HAIKU__
+/* Linux, Hurd, GNU/kFreeBSD, FreeBSD, NetBSD, OpenBSD, macOS, AIX, IRIX, Solaris, Cygwin, Haiku */
+# define HAVE_STACK_OVERFLOW_RECOVERY 1
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define LIBSIGSEGV_VERSION 0x020D    /* version number: (major<<8) + minor */
+extern int libsigsegv_version;       /* Likewise */
+
+/* -------------------------------------------------------------------------- */
+
+#if 1 /* really only HAVE_SIGSEGV_RECOVERY */
+
+/*
+ * The mask of bits that are set to zero in a fault address that gets passed
+ * to a global SIGSEGV handler.
+ * On some platforms, the precise fault address is not known, only the memory
+ * page into which the fault address falls. This is apparently allowed by POSIX:
+ * <http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/signal.h.html>
+ * says: "For some implementations, the value of si_addr may be inaccurate."
+ * In this case, the returned fault address is rounded down to a multiple of
+ * getpagesize() = sysconf(_SC_PAGESIZE).
+ * On such platforms, we define SIGSEGV_FAULT_ADDRESS_ALIGNMENT to be an upper
+ * bound for getpagesize() (and, like getpagesize(), also a power of 2).
+ * On the platforms where the returned fault address is the precise one, we
+ * define SIGSEGV_FAULT_ADDRESS_ALIGNMENT to 1.
+ */
+# if defined __NetBSD__ && (defined __sparc__ || defined __sparc64__)
+  /* getpagesize () is 0x1000 or 0x2000, depending on hardware.  */
+#  define SIGSEGV_FAULT_ADDRESS_ALIGNMENT 0x2000UL
+# elif defined __linux__ && (defined __s390__ || defined __s390x__)
+  /* getpagesize () is 0x1000.  */
+#  define SIGSEGV_FAULT_ADDRESS_ALIGNMENT 0x1000UL
+# else
+#  define SIGSEGV_FAULT_ADDRESS_ALIGNMENT 1UL
+# endif
+
+/*
+ * The type of a global SIGSEGV handler.
+ * The fault address, with the bits (SIGSEGV_FAULT_ADDRESS_ALIGNMENT - 1)
+ * cleared, is passed as argument.
+ * The access type (read access or write access) is not passed; your handler
+ * has to know itself how to distinguish these two cases.
+ * The second argument is 0, meaning it could also be a stack overflow, or 1,
+ * meaning the handler should seriously try to fix the fault.
+ * The return value should be nonzero if the handler has done its job
+ * and no other handler should be called, or 0 if the handler declines
+ * responsibility for the given address.
+ *
+ * The handler is run at a moment when nothing about the global state of the
+ * program is known. Therefore it cannot use facilities that manipulate global
+ * variables or locks. In particular, it cannot use malloc(); use mmap()
+ * instead. It cannot use fopen(); use open() instead. Etc. All global
+ * variables that are accessed by the handler should be marked 'volatile'.
+ */
+typedef int (*sigsegv_handler_t) (void* fault_address, int serious);
+
+/*
+ * Installs a global SIGSEGV handler.
+ * This should be called once only, and it ignores any previously installed
+ * SIGSEGV handler.
+ * Returns 0 on success, or -1 if the system doesn't support catching SIGSEGV.
+ */
+extern int sigsegv_install_handler (sigsegv_handler_t handler);
+
+/*
+ * Deinstalls the global SIGSEGV handler.
+ * This goes back to the state where no SIGSEGV handler is installed.
+ */
+extern void sigsegv_deinstall_handler (void);
+
+/*
+ * Prepares leaving a SIGSEGV handler (through longjmp or similar means).
+ * Control is transferred by calling CONTINUATION with CONT_ARG1, CONT_ARG2,
+ * CONT_ARG3 as arguments.
+ * CONTINUATION must not return.
+ * The sigsegv_leave_handler function may return if called from a SIGSEGV
+ * handler; its return value should be used as the handler's return value.
+ * The sigsegv_leave_handler function does not return if called from a
+ * stack overflow handler.
+ */
+extern int sigsegv_leave_handler (void (*continuation) (void*, void*, void*), void* cont_arg1, void* cont_arg2, void* cont_arg3);
+
+#endif /* HAVE_SIGSEGV_RECOVERY */
+
+#if 1 /* really only HAVE_STACK_OVERFLOW_RECOVERY */
+
+/*
+ * The type of a context passed to a stack overflow handler.
+ * This type is system dependent; on some platforms it is an 'ucontext_t *',
+ * on some platforms it is a 'struct sigcontext *', on others merely an
+ * opaque 'void *'.
+ */
+# if defined __linux__ || defined __ANDROID__ \
+     || (defined __FreeBSD__ && (defined __arm__ || defined __armhf__ || defined __arm64__)) \
+     || defined __NetBSD__ \
+     || (defined __APPLE__ && defined __MACH__) \
+     || defined _AIX || defined __sun \
+     || defined __CYGWIN__ || defined __HAIKU__
+typedef ucontext_t *stackoverflow_context_t;
+# elif defined __GNU__ \
+       || defined __FreeBSD_kernel__ || (defined __FreeBSD__ && !(defined __sparc__ || defined __sparc64__)) || defined __DragonFly__ \
+       || defined __OpenBSD__ || defined __sgi
+typedef struct sigcontext *stackoverflow_context_t;
+# else
+typedef void *stackoverflow_context_t;
+# endif
+
+/*
+ * The type of a stack overflow handler.
+ * Such a handler should perform a longjmp call in order to reduce the amount
+ * of stack needed. It must not return.
+ * The emergency argument is 0 when the stack could be repared, or 1 if the
+ * application should better save its state and exit now.
+ *
+ * The handler is run at a moment when nothing about the global state of the
+ * program is known. Therefore it cannot use facilities that manipulate global
+ * variables or locks. In particular, it cannot use malloc(); use mmap()
+ * instead. It cannot use fopen(); use open() instead. Etc. All global
+ * variables that are accessed by the handler should be marked 'volatile'.
+ */
+typedef void (*stackoverflow_handler_t) (int emergency, stackoverflow_context_t scp);
+
+/*
+ * Installs a stack overflow handler.
+ * The extra_stack argument is a pointer to a pre-allocated area used as a
+ * stack for executing the handler. It typically comes from a static variable
+ * or from heap-allocated memoty; placing it on the main stack may fail on
+ * some operating systems.
+ * Its size, passed in extra_stack_size, should be sufficiently large.  The
+ * following code determines an appropriate size:
+ *   #include <signal.h>
+ *   #ifndef SIGSTKSZ         / * glibc defines SIGSTKSZ for this purpose * /
+ *   # define SIGSTKSZ 16384  / * on most platforms, 16 KB are sufficient * /
+ *   #endif
+ * Returns 0 on success, or -1 if the system doesn't support catching stack
+ * overflow.
+ */
+extern int stackoverflow_install_handler (stackoverflow_handler_t handler,
+                                          void* extra_stack, size_t extra_stack_size);
+
+/*
+ * Deinstalls the stack overflow handler.
+ */
+extern void stackoverflow_deinstall_handler (void);
+
+#endif /* HAVE_STACK_OVERFLOW_RECOVERY */
+
+/* -------------------------------------------------------------------------- */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SIGSEGV_H */
diff --git a/src/grep/lib/stackvma.c b/src/grep/lib/stackvma.c
new file mode 100644
index 0000000..a810afe
--- /dev/null
+++ b/src/grep/lib/stackvma.c
@@ -0,0 +1,2081 @@
+/* Determine the virtual memory area of a given address.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+   Copyright (C) 2003-2006  Paolo Bonzini <bonzini@gnu.org>
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible and Paolo Bonzini.  */
+
+#include <config.h>
+
+/* On Solaris in 32-bit mode, when gnulib module 'largefile' is in use,
+   prevent a compilation error
+     "Cannot use procfs in the large file compilation environment"
+   On Android, when targeting Android 4.4 or older with a GCC toolchain,
+   prevent a compilation error
+     "error: call to 'mmap' declared with attribute error: mmap is not
+      available with _FILE_OFFSET_BITS=64 when using GCC until android-21.
+      Either raise your minSdkVersion, disable _FILE_OFFSET_BITS=64, or
+      switch to Clang."
+   The files that we access in this compilation unit are less than 2 GB
+   large.  */
+#if defined __sun || defined __ANDROID__
+# undef _FILE_OFFSET_BITS
+#endif
+
+/* Specification.  */
+#include "stackvma.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+/* =========================== stackvma-simple.c =========================== */
+
+#if defined __linux__ || defined __ANDROID__ \
+    || defined __FreeBSD_kernel__ || defined __FreeBSD__ || defined __DragonFly__ \
+    || defined __NetBSD__ \
+    || (defined __APPLE__ && defined __MACH__) \
+    || defined __sgi || defined __sun \
+    || defined __CYGWIN__ || defined __HAIKU__
+
+/* This file contains the proximity test function for the simple cases, where
+   the OS has an API for enumerating the mapped ranges of virtual memory.  */
+
+# if STACK_DIRECTION < 0
+
+/* Info about the gap between this VMA and the previous one.
+   addr must be < vma->start.  */
+static int
+simple_is_near_this (uintptr_t addr, struct vma_struct *vma)
+{
+  return (vma->start - addr <= (vma->start - vma->prev_end) / 2);
+}
+
+# endif
+# if STACK_DIRECTION > 0
+
+/* Info about the gap between this VMA and the next one.
+   addr must be > vma->end - 1.  */
+static int
+simple_is_near_this (uintptr_t addr, struct vma_struct *vma)
+{
+  return (addr - vma->end < (vma->next_start - vma->end) / 2);
+}
+
+# endif
+
+#endif
+
+/* =========================== stackvma-rofile.c =========================== */
+/* Buffered read-only streams.  */
+
+#if defined __linux__ || defined __ANDROID__ \
+    || defined __FreeBSD_kernel__ || defined __FreeBSD__ || defined __DragonFly__ \
+    || defined __NetBSD__ \
+    || defined __CYGWIN__
+
+# include <errno.h> /* errno, EINTR */
+# include <fcntl.h> /* open, O_RDONLY */
+# include <stddef.h> /* size_t */
+# include <unistd.h> /* getpagesize, lseek, read, close */
+# include <sys/types.h>
+# include <sys/mman.h> /* mmap, munmap */
+
+# if defined __linux__ || defined __ANDROID__
+#  include <limits.h> /* PATH_MAX */
+# endif
+
+/* Buffered read-only streams.
+   We cannot use <stdio.h> here, because fopen() calls malloc(), and a malloc()
+   call may have been interrupted.
+   Also, we cannot use multiple read() calls, because if the buffer size is
+   smaller than the file's contents:
+     - On NetBSD, the second read() call would return 0, thus making the file
+       appear truncated.
+     - On DragonFly BSD, the first read() call would fail with errno = EFBIG.
+     - On all platforms, if some other thread is doing memory allocations or
+       deallocations between two read() calls, there is a high risk that the
+       result of these two read() calls don't fit together, and as a
+       consequence we will parse gargage and either omit some VMAs or return
+       VMAs with nonsensical addresses.
+   So use mmap(), and ignore the resulting VMA.
+   The stack-allocated buffer cannot be too large, because this can be called
+   when we are in the context of an alternate stack of just SIGSTKSZ bytes.  */
+
+# if defined __linux__ || defined __ANDROID__
+  /* On Linux, if the file does not entirely fit into the buffer, the read()
+     function stops before the line that would come out truncated.  The
+     maximum size of such a line is 73 + PATH_MAX bytes.  To be sure that we
+     have read everything, we must verify that at least that many bytes are
+     left when read() returned.  */
+#  define MIN_LEFTOVER (73 + PATH_MAX)
+# else
+#  define MIN_LEFTOVER 1
+# endif
+
+# if MIN_LEFTOVER < 1024
+#  define STACK_ALLOCATED_BUFFER_SIZE 1024
+# else
+  /* There is no point in using a stack-allocated buffer if it is too small
+     anyway.  */
+#  define STACK_ALLOCATED_BUFFER_SIZE 1
+# endif
+
+struct rofile
+  {
+    size_t position;
+    size_t filled;
+    int eof_seen;
+    /* These fields deal with allocation of the buffer.  */
+    char *buffer;
+    char *auxmap;
+    size_t auxmap_length;
+    uintptr_t auxmap_start;
+    uintptr_t auxmap_end;
+    char stack_allocated_buffer[STACK_ALLOCATED_BUFFER_SIZE];
+  };
+
+/* Open a read-only file stream.  */
+static int
+rof_open (struct rofile *rof, const char *filename)
+{
+  int fd;
+  uintptr_t pagesize;
+  size_t size;
+
+  fd = open (filename, O_RDONLY);
+  if (fd < 0)
+    return -1;
+  rof->position = 0;
+  rof->eof_seen = 0;
+  /* Try the static buffer first.  */
+  pagesize = 0;
+  rof->buffer = rof->stack_allocated_buffer;
+  size = sizeof (rof->stack_allocated_buffer);
+  rof->auxmap = NULL;
+  rof->auxmap_start = 0;
+  rof->auxmap_end = 0;
+  for (;;)
+    {
+      /* Attempt to read the contents in a single system call.  */
+      if (size > MIN_LEFTOVER)
+        {
+          int n = read (fd, rof->buffer, size);
+          if (n < 0 && errno == EINTR)
+            goto retry;
+# if defined __DragonFly__
+          if (!(n < 0 && errno == EFBIG))
+# endif
+            {
+              if (n <= 0)
+                /* Empty file.  */
+                goto fail1;
+              if (n + MIN_LEFTOVER <= size)
+                {
+                  /* The buffer was sufficiently large.  */
+                  rof->filled = n;
+# if defined __linux__ || defined __ANDROID__
+                  /* On Linux, the read() call may stop even if the buffer was
+                     large enough.  We need the equivalent of full_read().  */
+                  for (;;)
+                    {
+                      n = read (fd, rof->buffer + rof->filled, size - rof->filled);
+                      if (n < 0 && errno == EINTR)
+                        goto retry;
+                      if (n < 0)
+                        /* Some error.  */
+                        goto fail1;
+                      if (n + MIN_LEFTOVER > size - rof->filled)
+                        /* Allocate a larger buffer.  */
+                        break;
+                      if (n == 0)
+                        {
+                          /* Reached the end of file.  */
+                          close (fd);
+                          return 0;
+                        }
+                      rof->filled += n;
+                    }
+# else
+                  close (fd);
+                  return 0;
+# endif
+                }
+            }
+        }
+      /* Allocate a larger buffer.  */
+      if (pagesize == 0)
+        {
+          pagesize = getpagesize ();
+          size = pagesize;
+          while (size <= MIN_LEFTOVER)
+            size = 2 * size;
+        }
+      else
+        {
+          size = 2 * size;
+          if (size == 0)
+            /* Wraparound.  */
+            goto fail1;
+          if (rof->auxmap != NULL)
+            munmap (rof->auxmap, rof->auxmap_length);
+        }
+      rof->auxmap = (void *) mmap ((void *) 0, size, PROT_READ | PROT_WRITE,
+                                   MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
+      if (rof->auxmap == (void *) -1)
+        {
+          close (fd);
+          return -1;
+        }
+      rof->auxmap_length = size;
+      rof->auxmap_start = (uintptr_t) rof->auxmap;
+      rof->auxmap_end = rof->auxmap_start + size;
+      rof->buffer = (char *) rof->auxmap;
+     retry:
+      /* Restart.  */
+      if (lseek (fd, 0, SEEK_SET) < 0)
+        {
+          close (fd);
+          fd = open (filename, O_RDONLY);
+          if (fd < 0)
+            goto fail2;
+        }
+    }
+ fail1:
+  close (fd);
+ fail2:
+  if (rof->auxmap != NULL)
+    munmap (rof->auxmap, rof->auxmap_length);
+  return -1;
+}
+
+/* Return the next byte from a read-only file stream without consuming it,
+   or -1 at EOF.  */
+static int
+rof_peekchar (struct rofile *rof)
+{
+  if (rof->position == rof->filled)
+    {
+      rof->eof_seen = 1;
+      return -1;
+    }
+  return (unsigned char) rof->buffer[rof->position];
+}
+
+/* Return the next byte from a read-only file stream, or -1 at EOF.  */
+static int
+rof_getchar (struct rofile *rof)
+{
+  int c = rof_peekchar (rof);
+  if (c >= 0)
+    rof->position++;
+  return c;
+}
+
+/* Parse an unsigned hexadecimal number from a read-only file stream.  */
+static int
+rof_scanf_lx (struct rofile *rof, uintptr_t *valuep)
+{
+  uintptr_t value = 0;
+  unsigned int numdigits = 0;
+  for (;;)
+    {
+      int c = rof_peekchar (rof);
+      if (c >= '0' && c <= '9')
+        value = (value << 4) + (c - '0');
+      else if (c >= 'A' && c <= 'F')
+        value = (value << 4) + (c - 'A' + 10);
+      else if (c >= 'a' && c <= 'f')
+        value = (value << 4) + (c - 'a' + 10);
+      else
+        break;
+      rof_getchar (rof);
+      numdigits++;
+    }
+  if (numdigits == 0)
+    return -1;
+  *valuep = value;
+  return 0;
+}
+
+/* Close a read-only file stream.  */
+static void
+rof_close (struct rofile *rof)
+{
+  if (rof->auxmap != NULL)
+    munmap (rof->auxmap, rof->auxmap_length);
+}
+
+#endif
+
+/* ========================== stackvma-vma-iter.c ========================== */
+/* Iterate through the virtual memory areas of the current process,
+   by reading from the /proc file system.  */
+
+/* This code is a simplified copy (no handling of protection flags) of the
+   code in gnulib's lib/vma-iter.c.  */
+
+#if defined __linux__ || defined __ANDROID__ \
+    || defined __FreeBSD_kernel__ || defined __FreeBSD__ || defined __DragonFly__ \
+    || defined __NetBSD__ \
+    || defined __CYGWIN__
+
+/* Forward declarations.  */
+struct callback_locals;
+static int callback (struct callback_locals *locals, uintptr_t start, uintptr_t end);
+
+# if defined __linux__ || defined __ANDROID__ || (defined __FreeBSD_kernel__ && !defined __FreeBSD__) || defined __CYGWIN__
+/* GNU/kFreeBSD mounts /proc as linprocfs, which looks like a Linux /proc
+   file system.  */
+
+static int
+vma_iterate_proc (struct callback_locals *locals)
+{
+  struct rofile rof;
+
+  /* Open the current process' maps file.  It describes one VMA per line.  */
+  if (rof_open (&rof, "/proc/self/maps") >= 0)
+    {
+      uintptr_t auxmap_start = rof.auxmap_start;
+      uintptr_t auxmap_end = rof.auxmap_end;
+
+      for (;;)
+        {
+          uintptr_t start, end;
+          int c;
+
+          /* Parse one line.  First start and end.  */
+          if (!(rof_scanf_lx (&rof, &start) >= 0
+                && rof_getchar (&rof) == '-'
+                && rof_scanf_lx (&rof, &end) >= 0))
+            break;
+          while (c = rof_getchar (&rof), c != -1 && c != '\n')
+            ;
+
+          if (start <= auxmap_start && auxmap_end - 1 <= end - 1)
+            {
+              /* Consider [start,end-1] \ [auxmap_start,auxmap_end-1]
+                 = [start,auxmap_start-1] u [auxmap_end,end-1].  */
+              if (start < auxmap_start)
+                if (callback (locals, start, auxmap_start))
+                  break;
+              if (auxmap_end - 1 < end - 1)
+                if (callback (locals, auxmap_end, end))
+                  break;
+            }
+          else
+            {
+              if (callback (locals, start, end))
+                break;
+            }
+        }
+      rof_close (&rof);
+      return 0;
+    }
+
+  return -1;
+}
+
+# elif defined __FreeBSD__ || defined __DragonFly__ || defined __NetBSD__
+
+static int
+vma_iterate_proc (struct callback_locals *locals)
+{
+  struct rofile rof;
+
+  /* Open the current process' maps file.  It describes one VMA per line.
+     On FreeBSD:
+       Cf. <https://www.freebsd.org/cgi/cvsweb.cgi/src/sys/fs/procfs/procfs_map.c?annotate=HEAD>
+     On NetBSD, there are two such files:
+       - /proc/curproc/map in near-FreeBSD syntax,
+       - /proc/curproc/maps in Linux syntax.
+       Cf. <http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/miscfs/procfs/procfs_map.c?rev=HEAD> */
+  if (rof_open (&rof, "/proc/curproc/map") >= 0)
+    {
+      uintptr_t auxmap_start = rof.auxmap_start;
+      uintptr_t auxmap_end = rof.auxmap_end;
+
+      for (;;)
+        {
+          uintptr_t start, end;
+          int c;
+
+          /* Parse one line.  First start.  */
+          if (!(rof_getchar (&rof) == '0'
+                && rof_getchar (&rof) == 'x'
+                && rof_scanf_lx (&rof, &start) >= 0))
+            break;
+          while (c = rof_peekchar (&rof), c == ' ' || c == '\t')
+            rof_getchar (&rof);
+          /* Then end.  */
+          if (!(rof_getchar (&rof) == '0'
+                && rof_getchar (&rof) == 'x'
+                && rof_scanf_lx (&rof, &end) >= 0))
+            break;
+          while (c = rof_getchar (&rof), c != -1 && c != '\n')
+            ;
+
+          if (start <= auxmap_start && auxmap_end - 1 <= end - 1)
+            {
+              /* Consider [start,end-1] \ [auxmap_start,auxmap_end-1]
+                 = [start,auxmap_start-1] u [auxmap_end,end-1].  */
+              if (start < auxmap_start)
+                if (callback (locals, start, auxmap_start))
+                  break;
+              if (auxmap_end - 1 < end - 1)
+                if (callback (locals, auxmap_end, end))
+                  break;
+            }
+          else
+            {
+              if (callback (locals, start, end))
+                break;
+            }
+        }
+      rof_close (&rof);
+      return 0;
+    }
+
+  return -1;
+}
+
+# endif
+
+# if (defined __FreeBSD_kernel__ || defined __FreeBSD__) && defined KERN_PROC_VMMAP /* FreeBSD >= 7.1 */
+
+#  include <sys/user.h> /* struct kinfo_vmentry */
+#  include <sys/sysctl.h> /* sysctl */
+
+static int
+vma_iterate_bsd (struct callback_locals *locals)
+{
+  /* Documentation: https://www.freebsd.org/cgi/man.cgi?sysctl(3)  */
+  int info_path[] = { CTL_KERN, KERN_PROC, KERN_PROC_VMMAP, getpid () };
+  size_t len;
+  size_t pagesize;
+  size_t memneed;
+  void *auxmap;
+  unsigned long auxmap_start;
+  unsigned long auxmap_end;
+  char *mem;
+  char *p;
+  char *p_end;
+
+  len = 0;
+  if (sysctl (info_path, 4, NULL, &len, NULL, 0) < 0)
+    return -1;
+  /* Allow for small variations over time.  In a multithreaded program
+     new VMAs can be allocated at any moment.  */
+  len = 2 * len + 200;
+  /* Allocate memneed bytes of memory.
+     We cannot use alloca here, because not much stack space is guaranteed.
+     We also cannot use malloc here, because a malloc() call may call mmap()
+     and thus pre-allocate available memory.
+     So use mmap(), and ignore the resulting VMA.  */
+  pagesize = getpagesize ();
+  memneed = len;
+  memneed = ((memneed - 1) / pagesize + 1) * pagesize;
+  auxmap = (void *) mmap ((void *) 0, memneed, PROT_READ | PROT_WRITE,
+                          MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
+  if (auxmap == (void *) -1)
+    return -1;
+  auxmap_start = (unsigned long) auxmap;
+  auxmap_end = auxmap_start + memneed;
+  mem = (char *) auxmap;
+  if (sysctl (info_path, 4, mem, &len, NULL, 0) < 0)
+    {
+      munmap (auxmap, memneed);
+      return -1;
+    }
+  p = mem;
+  p_end = mem + len;
+  while (p < p_end)
+    {
+      struct kinfo_vmentry *kve = (struct kinfo_vmentry *) p;
+      unsigned long start = kve->kve_start;
+      unsigned long end = kve->kve_end;
+      if (start <= auxmap_start && auxmap_end - 1 <= end - 1)
+        {
+          /* Consider [start,end-1] \ [auxmap_start,auxmap_end-1]
+             = [start,auxmap_start-1] u [auxmap_end,end-1].  */
+          if (start < auxmap_start)
+            if (callback (locals, start, auxmap_start))
+              break;
+          if (auxmap_end - 1 < end - 1)
+            if (callback (locals, auxmap_end, end))
+              break;
+        }
+      else
+        {
+          if (callback (locals, start, end))
+            break;
+        }
+      p += kve->kve_structsize;
+    }
+  munmap (auxmap, memneed);
+  return 0;
+}
+
+# else
+
+#  define vma_iterate_bsd(locals) (-1)
+
+# endif
+
+
+/* Iterate over the virtual memory areas of the current process.
+   If such iteration is supported, the callback is called once for every
+   virtual memory area, in ascending order, with the following arguments:
+     - LOCALS is the same argument as passed to vma_iterate.
+     - START is the address of the first byte in the area, page-aligned.
+     - END is the address of the last byte in the area plus 1, page-aligned.
+       Note that it may be 0 for the last area in the address space.
+   If the callback returns 0, the iteration continues.  If it returns 1,
+   the iteration terminates prematurely.
+   This function may open file descriptors, but does not call malloc().
+   Return 0 if all went well, or -1 in case of error.  */
+static int
+vma_iterate (struct callback_locals *locals)
+{
+# if defined __FreeBSD__
+  /* On FreeBSD with procfs (but not GNU/kFreeBSD, which uses linprocfs), the
+     function vma_iterate_proc does not return the virtual memory areas that
+     were created by anonymous mmap.  See
+     <https://svnweb.freebsd.org/base/head/sys/fs/procfs/procfs_map.c?view=markup>
+     So use vma_iterate_proc only as a fallback.  */
+  int retval = vma_iterate_bsd (locals);
+  if (retval == 0)
+      return 0;
+
+  return vma_iterate_proc (locals);
+# else
+  /* On the other platforms, try the /proc approach first, and the sysctl()
+     as a fallback.  */
+  int retval = vma_iterate_proc (locals);
+  if (retval == 0)
+      return 0;
+
+  return vma_iterate_bsd (locals);
+# endif
+}
+
+#endif
+
+/* =========================== stackvma-mincore.c =========================== */
+
+/* mincore() is a system call that allows to inquire the status of a
+   range of pages of virtual memory.  In particular, it allows to inquire
+   whether a page is mapped at all (except on Mac OS X, where mincore
+   returns 0 even for unmapped addresses).
+   As of 2006, mincore() is supported by:        possible bits:
+     - Linux,   since Linux 2.4 and glibc 2.2,   1
+     - Solaris, since Solaris 9,                 1
+     - MacOS X, since MacOS X 10.3 (at least),   1
+     - FreeBSD, since FreeBSD 6.0,               MINCORE_{INCORE,REFERENCED,MODIFIED}
+     - NetBSD,  since NetBSD 3.0 (at least),     1
+     - OpenBSD, since OpenBSD 2.6 (at least),    1
+     - AIX,     since AIX 5.3,                   1
+   As of 2019, also on
+     - Hurd.
+   However, while the API allows to easily determine the bounds of mapped
+   virtual memory, it does not make it easy to find the bounds of _unmapped_
+   virtual memory ranges.  We try to work around this, but it may still be
+   slow.  */
+
+#if defined __linux__ || defined __ANDROID__ \
+    || defined __FreeBSD_kernel__ || defined __FreeBSD__ || defined __DragonFly__ \
+    || defined __NetBSD__ /* || defined __OpenBSD__ */ \
+    /* || (defined __APPLE__ && defined __MACH__) */ \
+    || defined _AIX || defined __sun
+
+# include <unistd.h> /* getpagesize, mincore */
+# include <sys/types.h>
+# include <sys/mman.h> /* mincore */
+
+/* The AIX declaration of mincore() uses 'caddr_t', whereas the other platforms
+   use 'void *'. */
+# ifdef _AIX
+typedef caddr_t MINCORE_ADDR_T;
+# else
+typedef void* MINCORE_ADDR_T;
+# endif
+
+/* The glibc and musl declaration of mincore() uses 'unsigned char *', whereas
+   the BSD declaration uses 'char *'.  */
+# if __GLIBC__ >= 2 || defined __linux__ || defined __ANDROID__
+typedef unsigned char pageinfo_t;
+# else
+typedef char pageinfo_t;
+# endif
+
+/* Cache for getpagesize().  */
+static uintptr_t pagesize;
+
+/* Initialize pagesize.  */
+static void
+init_pagesize (void)
+{
+  pagesize = getpagesize ();
+}
+
+/* Test whether the page starting at ADDR is among the address range.
+   ADDR must be a multiple of pagesize.  */
+static int
+is_mapped (uintptr_t addr)
+{
+  pageinfo_t vec[1];
+  return mincore ((MINCORE_ADDR_T) addr, pagesize, vec) >= 0;
+}
+
+/* Assuming that the page starting at ADDR is among the address range,
+   return the start of its virtual memory range.
+   ADDR must be a multiple of pagesize.  */
+static uintptr_t
+mapped_range_start (uintptr_t addr)
+{
+  /* Use a moderately sized VEC here, small enough that it fits on the stack
+     (without requiring malloc).  */
+  pageinfo_t vec[1024];
+  uintptr_t stepsize = sizeof (vec);
+
+  for (;;)
+    {
+      uintptr_t max_remaining;
+
+      if (addr == 0)
+        return addr;
+
+      max_remaining = addr / pagesize;
+      if (stepsize > max_remaining)
+        stepsize = max_remaining;
+      if (mincore ((MINCORE_ADDR_T) (addr - stepsize * pagesize),
+                   stepsize * pagesize, vec) < 0)
+        /* Time to search in smaller steps.  */
+        break;
+      /* The entire range exists.  Continue searching in large steps.  */
+      addr -= stepsize * pagesize;
+    }
+  for (;;)
+    {
+      uintptr_t halfstepsize1;
+      uintptr_t halfstepsize2;
+
+      if (stepsize == 1)
+        return addr;
+
+      /* Here we know that less than stepsize pages exist starting at addr.  */
+      halfstepsize1 = (stepsize + 1) / 2;
+      halfstepsize2 = stepsize / 2;
+      /* halfstepsize1 + halfstepsize2 = stepsize.  */
+
+      if (mincore ((MINCORE_ADDR_T) (addr - halfstepsize1 * pagesize),
+                   halfstepsize1 * pagesize, vec) < 0)
+        stepsize = halfstepsize1;
+      else
+        {
+          addr -= halfstepsize1 * pagesize;
+          stepsize = halfstepsize2;
+        }
+    }
+}
+
+/* Assuming that the page starting at ADDR is among the address range,
+   return the end of its virtual memory range + 1.
+   ADDR must be a multiple of pagesize.  */
+static uintptr_t
+mapped_range_end (uintptr_t addr)
+{
+  /* Use a moderately sized VEC here, small enough that it fits on the stack
+     (without requiring malloc).  */
+  pageinfo_t vec[1024];
+  uintptr_t stepsize = sizeof (vec);
+
+  addr += pagesize;
+  for (;;)
+    {
+      uintptr_t max_remaining;
+
+      if (addr == 0) /* wrapped around? */
+        return addr;
+
+      max_remaining = (- addr) / pagesize;
+      if (stepsize > max_remaining)
+        stepsize = max_remaining;
+      if (mincore ((MINCORE_ADDR_T) addr, stepsize * pagesize, vec) < 0)
+        /* Time to search in smaller steps.  */
+        break;
+      /* The entire range exists.  Continue searching in large steps.  */
+      addr += stepsize * pagesize;
+    }
+  for (;;)
+    {
+      uintptr_t halfstepsize1;
+      uintptr_t halfstepsize2;
+
+      if (stepsize == 1)
+        return addr;
+
+      /* Here we know that less than stepsize pages exist starting at addr.  */
+      halfstepsize1 = (stepsize + 1) / 2;
+      halfstepsize2 = stepsize / 2;
+      /* halfstepsize1 + halfstepsize2 = stepsize.  */
+
+      if (mincore ((MINCORE_ADDR_T) addr, halfstepsize1 * pagesize, vec) < 0)
+        stepsize = halfstepsize1;
+      else
+        {
+          addr += halfstepsize1 * pagesize;
+          stepsize = halfstepsize2;
+        }
+    }
+}
+
+/* Determine whether an address range [ADDR1..ADDR2] is completely unmapped.
+   ADDR1 must be <= ADDR2.  */
+static int
+is_unmapped (uintptr_t addr1, uintptr_t addr2)
+{
+  uintptr_t count;
+  uintptr_t stepsize;
+
+  /* Round addr1 down.  */
+  addr1 = (addr1 / pagesize) * pagesize;
+  /* Round addr2 up and turn it into an exclusive bound.  */
+  addr2 = ((addr2 / pagesize) + 1) * pagesize;
+
+  /* This is slow: mincore() does not provide a way to determine the bounds
+     of the gaps directly.  So we have to use mincore() on individual pages
+     over and over again.  Only after we've verified that all pages are
+     unmapped, we know that the range is completely unmapped.
+     If we were to traverse the pages from bottom to top or from top to bottom,
+     it would be slow even in the average case.  To speed up the search, we
+     exploit the fact that mapped memory ranges are larger than one page on
+     average, therefore we have good chances of hitting a mapped area if we
+     traverse only every second, or only fourth page, etc.  This doesn't
+     decrease the worst-case runtime, only the average runtime.  */
+  count = (addr2 - addr1) / pagesize;
+  /* We have to test is_mapped (addr1 + i * pagesize) for 0 <= i < count.  */
+  for (stepsize = 1; stepsize < count; )
+    stepsize = 2 * stepsize;
+  for (;;)
+    {
+      uintptr_t addr_stepsize;
+      uintptr_t i;
+      uintptr_t addr;
+
+      stepsize = stepsize / 2;
+      if (stepsize == 0)
+        break;
+      addr_stepsize = stepsize * pagesize;
+      for (i = stepsize, addr = addr1 + addr_stepsize;
+           i < count;
+           i += 2 * stepsize, addr += 2 * addr_stepsize)
+        /* Here addr = addr1 + i * pagesize.  */
+        if (is_mapped (addr))
+          return 0;
+    }
+  return 1;
+}
+
+# if STACK_DIRECTION < 0
+
+/* Info about the gap between this VMA and the previous one.
+   addr must be < vma->start.  */
+static int
+mincore_is_near_this (uintptr_t addr, struct vma_struct *vma)
+{
+  /*   vma->start - addr <= (vma->start - vma->prev_end) / 2
+     is mathematically equivalent to
+       vma->prev_end <= 2 * addr - vma->start
+     <==> is_unmapped (2 * addr - vma->start, vma->start - 1).
+     But be careful about overflow: if 2 * addr - vma->start is negative,
+     we consider a tiny "guard page" mapping [0, 0] to be present around
+     NULL; it intersects the range (2 * addr - vma->start, vma->start - 1),
+     therefore return false.  */
+  uintptr_t testaddr = addr - (vma->start - addr);
+  if (testaddr > addr) /* overflow? */
+    return 0;
+  /* Here testaddr <= addr < vma->start.  */
+  return is_unmapped (testaddr, vma->start - 1);
+}
+
+# endif
+# if STACK_DIRECTION > 0
+
+/* Info about the gap between this VMA and the next one.
+   addr must be > vma->end - 1.  */
+static int
+mincore_is_near_this (uintptr_t addr, struct vma_struct *vma)
+{
+  /*   addr - vma->end < (vma->next_start - vma->end) / 2
+     is mathematically equivalent to
+       vma->next_start > 2 * addr - vma->end
+     <==> is_unmapped (vma->end, 2 * addr - vma->end).
+     But be careful about overflow: if 2 * addr - vma->end is > ~0UL,
+     we consider a tiny "guard page" mapping [0, 0] to be present around
+     NULL; it intersects the range (vma->end, 2 * addr - vma->end),
+     therefore return false.  */
+  uintptr_t testaddr = addr + (addr - vma->end);
+  if (testaddr < addr) /* overflow? */
+    return 0;
+  /* Here vma->end - 1 < addr <= testaddr.  */
+  return is_unmapped (vma->end, testaddr);
+}
+
+# endif
+
+static int
+mincore_get_vma (uintptr_t address, struct vma_struct *vma)
+{
+  if (pagesize == 0)
+    init_pagesize ();
+  address = (address / pagesize) * pagesize;
+  vma->start = mapped_range_start (address);
+  vma->end = mapped_range_end (address);
+  vma->is_near_this = mincore_is_near_this;
+  return 0;
+}
+
+#endif
+
+/* ========================================================================== */
+
+/* ---------------------------- stackvma-linux.c ---------------------------- */
+
+#if defined __linux__ || defined __ANDROID__ /* Linux */
+
+struct callback_locals
+{
+  uintptr_t address;
+  struct vma_struct *vma;
+# if STACK_DIRECTION < 0
+  uintptr_t prev;
+# else
+  int stop_at_next_vma;
+# endif
+  int retval;
+};
+
+static int
+callback (struct callback_locals *locals, uintptr_t start, uintptr_t end)
+{
+# if STACK_DIRECTION < 0
+  if (locals->address >= start && locals->address <= end - 1)
+    {
+      locals->vma->start = start;
+      locals->vma->end = end;
+      locals->vma->prev_end = locals->prev;
+      locals->retval = 0;
+      return 1;
+    }
+  locals->prev = end;
+# else
+  if (locals->stop_at_next_vma)
+    {
+      locals->vma->next_start = start;
+      locals->stop_at_next_vma = 0;
+      return 1;
+    }
+  if (locals->address >= start && locals->address <= end - 1)
+    {
+      locals->vma->start = start;
+      locals->vma->end = end;
+      locals->retval = 0;
+      locals->stop_at_next_vma = 1;
+      return 0;
+    }
+# endif
+  return 0;
+}
+
+int
+sigsegv_get_vma (uintptr_t address, struct vma_struct *vma)
+{
+  struct callback_locals locals;
+  locals.address = address;
+  locals.vma = vma;
+# if STACK_DIRECTION < 0
+  locals.prev = 0;
+# else
+  locals.stop_at_next_vma = 0;
+# endif
+  locals.retval = -1;
+
+  vma_iterate (&locals);
+  if (locals.retval == 0)
+    {
+# if !(STACK_DIRECTION < 0)
+      if (locals.stop_at_next_vma)
+        vma->next_start = 0;
+# endif
+      vma->is_near_this = simple_is_near_this;
+      return 0;
+    }
+
+  return mincore_get_vma (address, vma);
+}
+
+/* --------------------------- stackvma-freebsd.c --------------------------- */
+
+#elif defined __FreeBSD_kernel__ || defined __FreeBSD__ || defined __DragonFly__ /* GNU/kFreeBSD, FreeBSD */
+
+struct callback_locals
+{
+  uintptr_t address;
+  struct vma_struct *vma;
+  /* The stack appears as multiple adjacents segments, therefore we
+     merge adjacent segments.  */
+  uintptr_t curr_start, curr_end;
+# if STACK_DIRECTION < 0
+  uintptr_t prev_end;
+# else
+  int stop_at_next_vma;
+# endif
+  int retval;
+};
+
+static int
+callback (struct callback_locals *locals, uintptr_t start, uintptr_t end)
+{
+  if (start == locals->curr_end)
+    {
+      /* Merge adjacent segments.  */
+      locals->curr_end = end;
+      return 0;
+    }
+# if STACK_DIRECTION < 0
+  if (locals->curr_start < locals->curr_end
+      && locals->address >= locals->curr_start
+      && locals->address <= locals->curr_end - 1)
+    {
+      locals->vma->start = locals->curr_start;
+      locals->vma->end = locals->curr_end;
+      locals->vma->prev_end = locals->prev_end;
+      locals->retval = 0;
+      return 1;
+    }
+  locals->prev_end = locals->curr_end;
+# else
+  if (locals->stop_at_next_vma)
+    {
+      locals->vma->next_start = locals->curr_start;
+      locals->stop_at_next_vma = 0;
+      return 1;
+    }
+  if (locals->curr_start < locals->curr_end
+      && locals->address >= locals->curr_start
+      && locals->address <= locals->curr_end - 1)
+    {
+      locals->vma->start = locals->curr_start;
+      locals->vma->end = locals->curr_end;
+      locals->retval = 0;
+      locals->stop_at_next_vma = 1;
+      return 0;
+    }
+# endif
+  locals->curr_start = start; locals->curr_end = end;
+  return 0;
+}
+
+int
+sigsegv_get_vma (uintptr_t address, struct vma_struct *vma)
+{
+  struct callback_locals locals;
+  locals.address = address;
+  locals.vma = vma;
+  locals.curr_start = 0;
+  locals.curr_end = 0;
+# if STACK_DIRECTION < 0
+  locals.prev_end = 0;
+# else
+  locals.stop_at_next_vma = 0;
+# endif
+  locals.retval = -1;
+
+  vma_iterate (&locals);
+  if (locals.retval < 0)
+    {
+      if (locals.curr_start < locals.curr_end
+          && address >= locals.curr_start && address <= locals.curr_end - 1)
+        {
+          vma->start = locals.curr_start;
+          vma->end = locals.curr_end;
+# if STACK_DIRECTION < 0
+          vma->prev_end = locals.prev_end;
+# else
+          vma->next_start = 0;
+# endif
+          locals.retval = 0;
+        }
+    }
+  if (locals.retval == 0)
+    {
+# if !(STACK_DIRECTION < 0)
+      if (locals.stop_at_next_vma)
+        vma->next_start = 0;
+# endif
+      vma->is_near_this = simple_is_near_this;
+      return 0;
+    }
+
+  /* FreeBSD 6.[01] doesn't allow to distinguish unmapped pages from
+     mapped but swapped-out pages.  See whether it's fixed.  */
+  if (!is_mapped (0))
+    /* OK, mincore() appears to work as expected.  */
+    return mincore_get_vma (address, vma);
+  return -1;
+}
+
+/* --------------------------- stackvma-netbsd.c --------------------------- */
+
+#elif defined __NetBSD__ /* NetBSD */
+
+struct callback_locals
+{
+  uintptr_t address;
+  struct vma_struct *vma;
+  /* The stack appears as multiple adjacents segments, therefore we
+     merge adjacent segments.  */
+  uintptr_t curr_start, curr_end;
+# if STACK_DIRECTION < 0
+  uintptr_t prev_end;
+# else
+  int stop_at_next_vma;
+# endif
+  int retval;
+};
+
+static int
+callback (struct callback_locals *locals, uintptr_t start, uintptr_t end)
+{
+  if (start == locals->curr_end)
+    {
+      /* Merge adjacent segments.  */
+      locals->curr_end = end;
+      return 0;
+    }
+# if STACK_DIRECTION < 0
+  if (locals->curr_start < locals->curr_end
+      && locals->address >= locals->curr_start
+      && locals->address <= locals->curr_end - 1)
+    {
+      locals->vma->start = locals->curr_start;
+      locals->vma->end = locals->curr_end;
+      locals->vma->prev_end = locals->prev_end;
+      locals->retval = 0;
+      return 1;
+    }
+  locals->prev_end = locals->curr_end;
+# else
+  if (locals->stop_at_next_vma)
+    {
+      locals->vma->next_start = locals->curr_start;
+      locals->stop_at_next_vma = 0;
+      return 1;
+    }
+  if (locals->curr_start < locals->curr_end
+      && locals->address >= locals->curr_start
+      && locals->address <= locals->curr_end - 1)
+    {
+      locals->vma->start = locals->curr_start;
+      locals->vma->end = locals->curr_end;
+      locals->retval = 0;
+      locals->stop_at_next_vma = 1;
+      return 0;
+    }
+# endif
+  locals->curr_start = start; locals->curr_end = end;
+  return 0;
+}
+
+int
+sigsegv_get_vma (uintptr_t address, struct vma_struct *vma)
+{
+  struct callback_locals locals;
+  locals.address = address;
+  locals.vma = vma;
+  locals.curr_start = 0;
+  locals.curr_end = 0;
+# if STACK_DIRECTION < 0
+  locals.prev_end = 0;
+# else
+  locals.stop_at_next_vma = 0;
+# endif
+  locals.retval = -1;
+
+  vma_iterate (&locals);
+  if (locals.retval < 0)
+    {
+      if (locals.curr_start < locals.curr_end
+          && address >= locals.curr_start && address <= locals.curr_end - 1)
+        {
+          vma->start = locals.curr_start;
+          vma->end = locals.curr_end;
+# if STACK_DIRECTION < 0
+          vma->prev_end = locals.prev_end;
+# else
+          vma->next_start = 0;
+# endif
+          locals.retval = 0;
+        }
+    }
+  if (locals.retval == 0)
+    {
+# if !(STACK_DIRECTION < 0)
+      if (locals.stop_at_next_vma)
+        vma->next_start = 0;
+# endif
+      vma->is_near_this = simple_is_near_this;
+      return 0;
+    }
+
+  return mincore_get_vma (address, vma);
+}
+
+/* --------------------------- stackvma-mquery.c --------------------------- */
+
+/* mquery() is a system call that allows to inquire the status of a
+   range of pages of virtual memory.  In particular, it allows to inquire
+   whether a page is mapped at all, and where is the next unmapped page
+   after a given address.
+   As of 2021, mquery() is supported by:
+     - OpenBSD, since OpenBSD 3.4.
+   Note that this file can give different results.  For example, on
+   OpenBSD 4.4 / i386 the stack segment (which starts around 0xcdbfe000)
+   ends at 0xcfbfdfff according to mincore, but at 0xffffffff according to
+   mquery.  */
+
+#elif defined __OpenBSD__ /* OpenBSD */
+
+# include <unistd.h> /* getpagesize, mincore */
+# include <sys/types.h>
+# include <sys/mman.h> /* mincore */
+
+/* Cache for getpagesize().  */
+static uintptr_t pagesize;
+
+/* Initialize pagesize.  */
+static void
+init_pagesize (void)
+{
+  pagesize = getpagesize ();
+}
+
+/* Test whether the page starting at ADDR is among the address range.
+   ADDR must be a multiple of pagesize.  */
+static int
+is_mapped (uintptr_t addr)
+{
+  /* Avoid calling mquery with a NULL first argument, because this argument
+     value has a specific meaning.  We know the NULL page is unmapped.  */
+  if (addr == 0)
+    return 0;
+  return mquery ((void *) addr, pagesize, 0, MAP_FIXED, -1, 0) == (void *) -1;
+}
+
+/* Assuming that the page starting at ADDR is among the address range,
+   return the start of its virtual memory range.
+   ADDR must be a multiple of pagesize.  */
+static uintptr_t
+mapped_range_start (uintptr_t addr)
+{
+  uintptr_t stepsize;
+  uintptr_t known_unmapped_page;
+
+  /* Look at smaller addresses, in larger and larger steps, to minimize the
+     number of mquery() calls.  */
+  stepsize = pagesize;
+  for (;;)
+    {
+      uintptr_t hole;
+
+      if (addr == 0)
+        abort ();
+
+      if (addr <= stepsize)
+        {
+          known_unmapped_page = 0;
+          break;
+        }
+
+      hole = (uintptr_t) mquery ((void *) (addr - stepsize), pagesize,
+                                     0, 0, -1, 0);
+      if (!(hole == (uintptr_t) (void *) -1 || hole >= addr))
+        {
+          /* Some part of [addr - stepsize, addr - 1] is unmapped.  */
+          known_unmapped_page = hole;
+          break;
+        }
+
+      /* The entire range [addr - stepsize, addr - 1] is mapped.  */
+      addr -= stepsize;
+
+      if (2 * stepsize > stepsize && 2 * stepsize < addr)
+        stepsize = 2 * stepsize;
+    }
+
+  /* Now reduce the step size again.
+     We know that the page at known_unmapped_page is unmapped and that
+     0 < addr - known_unmapped_page <= stepsize.  */
+  while (stepsize > pagesize && stepsize / 2 >= addr - known_unmapped_page)
+    stepsize = stepsize / 2;
+  /* Still 0 < addr - known_unmapped_page <= stepsize.  */
+  while (stepsize > pagesize)
+    {
+      uintptr_t hole;
+
+      stepsize = stepsize / 2;
+      hole = (uintptr_t) mquery ((void *) (addr - stepsize), pagesize,
+                                     0, 0, -1, 0);
+      if (!(hole == (uintptr_t) (void *) -1 || hole >= addr))
+        /* Some part of [addr - stepsize, addr - 1] is unmapped.  */
+        known_unmapped_page = hole;
+      else
+        /* The entire range [addr - stepsize, addr - 1] is mapped.  */
+        addr -= stepsize;
+      /* Still 0 < addr - known_unmapped_page <= stepsize.  */
+    }
+
+  return addr;
+}
+
+/* Assuming that the page starting at ADDR is among the address range,
+   return the end of its virtual memory range + 1.
+   ADDR must be a multiple of pagesize.  */
+static uintptr_t
+mapped_range_end (uintptr_t addr)
+{
+  uintptr_t end;
+
+  if (addr == 0)
+    abort ();
+
+  end = (uintptr_t) mquery ((void *) addr, pagesize, 0, 0, -1, 0);
+  if (end == (uintptr_t) (void *) -1)
+    end = 0; /* wrap around */
+  return end;
+}
+
+/* Determine whether an address range [ADDR1..ADDR2] is completely unmapped.
+   ADDR1 must be <= ADDR2.  */
+static int
+is_unmapped (uintptr_t addr1, uintptr_t addr2)
+{
+  /* Round addr1 down.  */
+  addr1 = (addr1 / pagesize) * pagesize;
+  /* Round addr2 up and turn it into an exclusive bound.  */
+  addr2 = ((addr2 / pagesize) + 1) * pagesize;
+
+  /* Avoid calling mquery with a NULL first argument, because this argument
+     value has a specific meaning.  We know the NULL page is unmapped.  */
+  if (addr1 == 0)
+    addr1 = pagesize;
+
+  if (addr1 < addr2)
+    {
+      if (mquery ((void *) addr1, addr2 - addr1, 0, MAP_FIXED, -1, 0)
+          == (void *) -1)
+        /* Not all the interval [addr1 .. addr2 - 1] is unmapped.  */
+        return 0;
+      else
+        /* The interval [addr1 .. addr2 - 1] is unmapped.  */
+        return 1;
+    }
+  return 1;
+}
+
+# if STACK_DIRECTION < 0
+
+/* Info about the gap between this VMA and the previous one.
+   addr must be < vma->start.  */
+static int
+mquery_is_near_this (uintptr_t addr, struct vma_struct *vma)
+{
+  /*   vma->start - addr <= (vma->start - vma->prev_end) / 2
+     is mathematically equivalent to
+       vma->prev_end <= 2 * addr - vma->start
+     <==> is_unmapped (2 * addr - vma->start, vma->start - 1).
+     But be careful about overflow: if 2 * addr - vma->start is negative,
+     we consider a tiny "guard page" mapping [0, 0] to be present around
+     NULL; it intersects the range (2 * addr - vma->start, vma->start - 1),
+     therefore return false.  */
+  uintptr_t testaddr = addr - (vma->start - addr);
+  if (testaddr > addr) /* overflow? */
+    return 0;
+  /* Here testaddr <= addr < vma->start.  */
+  return is_unmapped (testaddr, vma->start - 1);
+}
+
+# endif
+# if STACK_DIRECTION > 0
+
+/* Info about the gap between this VMA and the next one.
+   addr must be > vma->end - 1.  */
+static int
+mquery_is_near_this (uintptr_t addr, struct vma_struct *vma)
+{
+  /*   addr - vma->end < (vma->next_start - vma->end) / 2
+     is mathematically equivalent to
+       vma->next_start > 2 * addr - vma->end
+     <==> is_unmapped (vma->end, 2 * addr - vma->end).
+     But be careful about overflow: if 2 * addr - vma->end is > ~0UL,
+     we consider a tiny "guard page" mapping [0, 0] to be present around
+     NULL; it intersects the range (vma->end, 2 * addr - vma->end),
+     therefore return false.  */
+  uintptr_t testaddr = addr + (addr - vma->end);
+  if (testaddr < addr) /* overflow? */
+    return 0;
+  /* Here vma->end - 1 < addr <= testaddr.  */
+  return is_unmapped (vma->end, testaddr);
+}
+
+# endif
+
+int
+sigsegv_get_vma (uintptr_t address, struct vma_struct *vma)
+{
+  if (pagesize == 0)
+    init_pagesize ();
+  address = (address / pagesize) * pagesize;
+  vma->start = mapped_range_start (address);
+  vma->end = mapped_range_end (address);
+  vma->is_near_this = mquery_is_near_this;
+  return 0;
+}
+
+/* ---------------------------- stackvma-mach.c ---------------------------- */
+
+#elif (defined __APPLE__ && defined __MACH__) /* macOS */
+
+#include <libc.h>
+#include <nlist.h>
+#include <mach/mach.h>
+#include <mach/machine/vm_param.h>
+
+int
+sigsegv_get_vma (uintptr_t req_address, struct vma_struct *vma)
+{
+  uintptr_t prev_address = 0, prev_size = 0;
+  uintptr_t join_address = 0, join_size = 0;
+  int more = 1;
+  vm_address_t address;
+  vm_size_t size;
+  task_t task = mach_task_self ();
+
+  for (address = VM_MIN_ADDRESS; more; address += size)
+    {
+      mach_port_t object_name;
+      /* In MacOS X 10.5, the types vm_address_t, vm_offset_t, vm_size_t have
+         32 bits in 32-bit processes and 64 bits in 64-bit processes. Whereas
+         mach_vm_address_t and mach_vm_size_t are always 64 bits large.
+         MacOS X 10.5 has three vm_region like methods:
+           - vm_region. It has arguments that depend on whether the current
+             process is 32-bit or 64-bit. When linking dynamically, this
+             function exists only in 32-bit processes. Therefore we use it only
+             in 32-bit processes.
+           - vm_region_64. It has arguments that depend on whether the current
+             process is 32-bit or 64-bit. It interprets a flavor
+             VM_REGION_BASIC_INFO as VM_REGION_BASIC_INFO_64, which is
+             dangerous since 'struct vm_region_basic_info_64' is larger than
+             'struct vm_region_basic_info'; therefore let's write
+             VM_REGION_BASIC_INFO_64 explicitly.
+           - mach_vm_region. It has arguments that are 64-bit always. This
+             function is useful when you want to access the VM of a process
+             other than the current process.
+         In 64-bit processes, we could use vm_region_64 or mach_vm_region.
+         I choose vm_region_64 because it uses the same types as vm_region,
+         resulting in less conditional code.  */
+# if defined __aarch64__ || defined __ppc64__ || defined __x86_64__
+      struct vm_region_basic_info_64 info;
+      mach_msg_type_number_t info_count = VM_REGION_BASIC_INFO_COUNT_64;
+
+      more = (vm_region_64 (task, &address, &size, VM_REGION_BASIC_INFO_64,
+                            (vm_region_info_t)&info, &info_count, &object_name)
+              == KERN_SUCCESS);
+# else
+      struct vm_region_basic_info info;
+      mach_msg_type_number_t info_count = VM_REGION_BASIC_INFO_COUNT;
+
+      more = (vm_region (task, &address, &size, VM_REGION_BASIC_INFO,
+                         (vm_region_info_t)&info, &info_count, &object_name)
+              == KERN_SUCCESS);
+# endif
+      if (!more)
+        {
+          address = join_address + join_size;
+          size = 0;
+        }
+
+      if ((uintptr_t) address == join_address + join_size)
+        join_size += size;
+      else
+        {
+          prev_address = join_address;
+          prev_size = join_size;
+          join_address = (uintptr_t) address;
+          join_size = size;
+        }
+
+      if (object_name != MACH_PORT_NULL)
+        mach_port_deallocate (mach_task_self (), object_name);
+
+# if STACK_DIRECTION < 0
+      if (join_address <= req_address && join_address + join_size > req_address)
+        {
+          vma->start = join_address;
+          vma->end = join_address + join_size;
+          vma->prev_end = prev_address + prev_size;
+          vma->is_near_this = simple_is_near_this;
+          return 0;
+        }
+# else
+      if (prev_address <= req_address && prev_address + prev_size > req_address)
+        {
+          vma->start = prev_address;
+          vma->end = prev_address + prev_size;
+          vma->next_start = join_address;
+          vma->is_near_this = simple_is_near_this;
+          return 0;
+        }
+# endif
+    }
+
+# if STACK_DIRECTION > 0
+  if (join_address <= req_address && join_address + size > req_address)
+    {
+      vma->start = prev_address;
+      vma->end = prev_address + prev_size;
+      vma->next_start = ~0UL;
+      vma->is_near_this = simple_is_near_this;
+      return 0;
+    }
+# endif
+
+  return -1;
+}
+
+/* -------------------------------------------------------------------------- */
+
+#elif defined _AIX /* AIX */
+
+int
+sigsegv_get_vma (uintptr_t address, struct vma_struct *vma)
+{
+  return mincore_get_vma (address, vma);
+}
+
+/* --------------------------- stackvma-procfs.h --------------------------- */
+
+#elif defined __sgi || defined __sun /* IRIX, Solaris */
+
+# include <errno.h> /* errno, EINTR */
+# include <fcntl.h> /* open, O_RDONLY */
+# include <stddef.h> /* size_t */
+# include <unistd.h> /* getpagesize, getpid, read, close */
+# include <sys/types.h>
+# include <sys/mman.h> /* mmap, munmap */
+# include <sys/stat.h> /* fstat */
+# include <string.h> /* memcpy */
+
+/* Try to use the newer ("structured") /proc filesystem API, if supported.  */
+# define _STRUCTURED_PROC 1
+# include <sys/procfs.h> /* prmap_t, optionally PIOC* */
+
+# if !defined __sun
+
+/* Cache for getpagesize().  */
+static uintptr_t pagesize;
+
+/* Initialize pagesize.  */
+static void
+init_pagesize (void)
+{
+  pagesize = getpagesize ();
+}
+
+# endif
+
+struct callback_locals
+{
+  uintptr_t address;
+  struct vma_struct *vma;
+# if STACK_DIRECTION < 0
+  uintptr_t prev;
+# else
+  int stop_at_next_vma;
+# endif
+  int retval;
+};
+
+static int
+callback (struct callback_locals *locals, uintptr_t start, uintptr_t end)
+{
+# if STACK_DIRECTION < 0
+  if (locals->address >= start && locals->address <= end - 1)
+    {
+      locals->vma->start = start;
+      locals->vma->end = end;
+      locals->vma->prev_end = locals->prev;
+      locals->retval = 0;
+      return 1;
+    }
+  locals->prev = end;
+# else
+  if (locals->stop_at_next_vma)
+    {
+      locals->vma->next_start = start;
+      locals->stop_at_next_vma = 0;
+      return 1;
+    }
+  if (locals->address >= start && locals->address <= end - 1)
+    {
+      locals->vma->start = start;
+      locals->vma->end = end;
+      locals->retval = 0;
+      locals->stop_at_next_vma = 1;
+      return 0;
+    }
+# endif
+  return 0;
+}
+
+/* Iterate over the virtual memory areas of the current process.
+   If such iteration is supported, the callback is called once for every
+   virtual memory area, in ascending order, with the following arguments:
+     - LOCALS is the same argument as passed to vma_iterate.
+     - START is the address of the first byte in the area, page-aligned.
+     - END is the address of the last byte in the area plus 1, page-aligned.
+       Note that it may be 0 for the last area in the address space.
+   If the callback returns 0, the iteration continues.  If it returns 1,
+   the iteration terminates prematurely.
+   This function may open file descriptors, but does not call malloc().
+   Return 0 if all went well, or -1 in case of error.  */
+/* This code is a simplified copy (no handling of protection flags) of the
+   code in gnulib's lib/vma-iter.c.  */
+static int
+vma_iterate (struct callback_locals *locals)
+{
+  /* Note: Solaris <sys/procfs.h> defines a different type prmap_t with
+     _STRUCTURED_PROC than without! Here's a table of sizeof(prmap_t):
+                                  32-bit   64-bit
+         _STRUCTURED_PROC = 0       32       56
+         _STRUCTURED_PROC = 1       96      104
+     Therefore, if the include files provide the newer API, prmap_t has
+     the bigger size, and thus you MUST use the newer API.  And if the
+     include files provide the older API, prmap_t has the smaller size,
+     and thus you MUST use the older API.  */
+
+# if defined PIOCNMAP && defined PIOCMAP
+  /* We must use the older /proc interface.  */
+
+  char fnamebuf[6+10+1];
+  char *fname;
+  int fd;
+  int nmaps;
+  size_t memneed;
+#  if HAVE_MAP_ANONYMOUS
+#   define zero_fd -1
+#   define map_flags MAP_ANONYMOUS
+#  else /* !HAVE_MAP_ANONYMOUS */
+  int zero_fd;
+#   define map_flags 0
+#  endif
+  void *auxmap;
+  uintptr_t auxmap_start;
+  uintptr_t auxmap_end;
+  prmap_t* maps;
+  prmap_t* mp;
+
+  if (pagesize == 0)
+    init_pagesize ();
+
+  /* Construct fname = sprintf (fnamebuf+i, "/proc/%u", getpid ()).  */
+  fname = fnamebuf + sizeof (fnamebuf) - 1;
+  *fname = '\0';
+  {
+    unsigned int value = getpid ();
+    do
+      *--fname = (value % 10) + '0';
+    while ((value = value / 10) > 0);
+  }
+  fname -= 6;
+  memcpy (fname, "/proc/", 6);
+
+  fd = open (fname, O_RDONLY);
+  if (fd < 0)
+    return -1;
+
+  if (ioctl (fd, PIOCNMAP, &nmaps) < 0)
+    goto fail2;
+
+  memneed = (nmaps + 10) * sizeof (prmap_t);
+  /* Allocate memneed bytes of memory.
+     We cannot use alloca here, because not much stack space is guaranteed.
+     We also cannot use malloc here, because a malloc() call may call mmap()
+     and thus pre-allocate available memory.
+     So use mmap(), and ignore the resulting VMA.  */
+  memneed = ((memneed - 1) / pagesize + 1) * pagesize;
+#  if !HAVE_MAP_ANONYMOUS
+  zero_fd = open ("/dev/zero", O_RDONLY, 0644);
+  if (zero_fd < 0)
+    goto fail2;
+#  endif
+  auxmap = (void *) mmap ((void *) 0, memneed, PROT_READ | PROT_WRITE,
+                          map_flags | MAP_PRIVATE, zero_fd, 0);
+#  if !HAVE_MAP_ANONYMOUS
+  close (zero_fd);
+#  endif
+  if (auxmap == (void *) -1)
+    goto fail2;
+  auxmap_start = (uintptr_t) auxmap;
+  auxmap_end = auxmap_start + memneed;
+  maps = (prmap_t *) auxmap;
+
+  if (ioctl (fd, PIOCMAP, maps) < 0)
+    goto fail1;
+
+  for (mp = maps;;)
+    {
+      uintptr_t start, end;
+
+      start = (uintptr_t) mp->pr_vaddr;
+      end = start + mp->pr_size;
+      if (start == 0 && end == 0)
+        break;
+      mp++;
+      if (start <= auxmap_start && auxmap_end - 1 <= end - 1)
+        {
+          /* Consider [start,end-1] \ [auxmap_start,auxmap_end-1]
+             = [start,auxmap_start-1] u [auxmap_end,end-1].  */
+          if (start < auxmap_start)
+            if (callback (locals, start, auxmap_start))
+              break;
+          if (auxmap_end - 1 < end - 1)
+            if (callback (locals, auxmap_end, end))
+              break;
+        }
+      else
+        {
+          if (callback (locals, start, end))
+            break;
+        }
+    }
+  munmap (auxmap, memneed);
+  close (fd);
+  return 0;
+
+ fail1:
+  munmap (auxmap, memneed);
+ fail2:
+  close (fd);
+  return -1;
+
+# else
+  /* We must use the newer /proc interface.
+     Documentation:
+     https://docs.oracle.com/cd/E23824_01/html/821-1473/proc-4.html
+     The contents of /proc/<pid>/map consists of records of type
+     prmap_t.  These are different in 32-bit and 64-bit processes,
+     but here we are fortunately accessing only the current process.  */
+
+  char fnamebuf[6+10+4+1];
+  char *fname;
+  int fd;
+  int nmaps;
+  size_t memneed;
+#  if HAVE_MAP_ANONYMOUS
+#   define zero_fd -1
+#   define map_flags MAP_ANONYMOUS
+#  else /* !HAVE_MAP_ANONYMOUS */
+  int zero_fd;
+#   define map_flags 0
+#  endif
+  void *auxmap;
+  uintptr_t auxmap_start;
+  uintptr_t auxmap_end;
+  prmap_t* maps;
+  prmap_t* maps_end;
+  prmap_t* mp;
+
+  if (pagesize == 0)
+    init_pagesize ();
+
+  /* Construct fname = sprintf (fnamebuf+i, "/proc/%u/map", getpid ()).  */
+  fname = fnamebuf + sizeof (fnamebuf) - 1 - 4;
+  memcpy (fname, "/map", 4 + 1);
+  {
+    unsigned int value = getpid ();
+    do
+      *--fname = (value % 10) + '0';
+    while ((value = value / 10) > 0);
+  }
+  fname -= 6;
+  memcpy (fname, "/proc/", 6);
+
+  fd = open (fname, O_RDONLY);
+  if (fd < 0)
+    return -1;
+
+  {
+    struct stat statbuf;
+    if (fstat (fd, &statbuf) < 0)
+      goto fail2;
+    nmaps = statbuf.st_size / sizeof (prmap_t);
+  }
+
+  memneed = (nmaps + 10) * sizeof (prmap_t);
+  /* Allocate memneed bytes of memory.
+     We cannot use alloca here, because not much stack space is guaranteed.
+     We also cannot use malloc here, because a malloc() call may call mmap()
+     and thus pre-allocate available memory.
+     So use mmap(), and ignore the resulting VMA.  */
+  memneed = ((memneed - 1) / pagesize + 1) * pagesize;
+#  if !HAVE_MAP_ANONYMOUS
+  zero_fd = open ("/dev/zero", O_RDONLY, 0644);
+  if (zero_fd < 0)
+    goto fail2;
+#  endif
+  auxmap = (void *) mmap ((void *) 0, memneed, PROT_READ | PROT_WRITE,
+                          map_flags | MAP_PRIVATE, zero_fd, 0);
+#  if !HAVE_MAP_ANONYMOUS
+  close (zero_fd);
+#  endif
+  if (auxmap == (void *) -1)
+    goto fail2;
+  auxmap_start = (uintptr_t) auxmap;
+  auxmap_end = auxmap_start + memneed;
+  maps = (prmap_t *) auxmap;
+
+  /* Read up to memneed bytes from fd into maps.  */
+  {
+    size_t remaining = memneed;
+    size_t total_read = 0;
+    char *ptr = (char *) maps;
+
+    do
+      {
+        size_t nread = read (fd, ptr, remaining);
+        if (nread == (size_t)-1)
+          {
+            if (errno == EINTR)
+              continue;
+            goto fail1;
+          }
+        if (nread == 0)
+          /* EOF */
+          break;
+        total_read += nread;
+        ptr += nread;
+        remaining -= nread;
+      }
+    while (remaining > 0);
+
+    nmaps = (memneed - remaining) / sizeof (prmap_t);
+    maps_end = maps + nmaps;
+  }
+
+  for (mp = maps; mp < maps_end; mp++)
+    {
+      uintptr_t start, end;
+
+      start = (uintptr_t) mp->pr_vaddr;
+      end = start + mp->pr_size;
+      if (start <= auxmap_start && auxmap_end - 1 <= end - 1)
+        {
+          /* Consider [start,end-1] \ [auxmap_start,auxmap_end-1]
+             = [start,auxmap_start-1] u [auxmap_end,end-1].  */
+          if (start < auxmap_start)
+            if (callback (locals, start, auxmap_start))
+              break;
+          if (auxmap_end - 1 < end - 1)
+            if (callback (locals, auxmap_end, end))
+              break;
+        }
+      else
+        {
+          if (callback (locals, start, end))
+            break;
+        }
+    }
+  munmap (auxmap, memneed);
+  close (fd);
+  return 0;
+
+ fail1:
+  munmap (auxmap, memneed);
+ fail2:
+  close (fd);
+  return -1;
+
+# endif
+}
+
+int
+sigsegv_get_vma (uintptr_t address, struct vma_struct *vma)
+{
+  struct callback_locals locals;
+  locals.address = address;
+  locals.vma = vma;
+# if STACK_DIRECTION < 0
+  locals.prev = 0;
+# else
+  locals.stop_at_next_vma = 0;
+# endif
+  locals.retval = -1;
+
+  vma_iterate (&locals);
+  if (locals.retval == 0)
+    {
+# if !(STACK_DIRECTION < 0)
+      if (locals.stop_at_next_vma)
+        vma->next_start = 0;
+# endif
+      vma->is_near_this = simple_is_near_this;
+      return 0;
+    }
+
+# if defined __sun
+  return mincore_get_vma (address, vma);
+# else
+  return -1;
+# endif
+}
+
+/* -------------------------------------------------------------------------- */
+
+#elif defined __CYGWIN__ /* Cygwin */
+
+struct callback_locals
+{
+  uintptr_t address;
+  struct vma_struct *vma;
+  /* The stack appears as three adjacents segments, therefore we
+     merge adjacent segments.  */
+  uintptr_t curr_start, curr_end;
+# if STACK_DIRECTION < 0
+  uintptr_t prev_end;
+# else
+  int stop_at_next_vma;
+# endif
+  int retval;
+};
+
+static int
+callback (struct callback_locals *locals, uintptr_t start, uintptr_t end)
+{
+  if (start == locals->curr_end)
+    {
+      /* Merge adjacent segments.  */
+      locals->curr_end = end;
+      return 0;
+    }
+# if STACK_DIRECTION < 0
+  if (locals->curr_start < locals->curr_end
+      && locals->address >= locals->curr_start
+      && locals->address <= locals->curr_end - 1)
+    {
+      locals->vma->start = locals->curr_start;
+      locals->vma->end = locals->curr_end;
+      locals->vma->prev_end = locals->prev_end;
+      locals->retval = 0;
+      return 1;
+    }
+  locals->prev_end = locals->curr_end;
+# else
+  if (locals->stop_at_next_vma)
+    {
+      locals->vma->next_start = locals->curr_start;
+      locals->stop_at_next_vma = 0;
+      return 1;
+    }
+  if (locals->curr_start < locals->curr_end
+      && locals->address >= locals->curr_start
+      && locals->address <= locals->curr_end - 1)
+    {
+      locals->vma->start = locals->curr_start;
+      locals->vma->end = locals->curr_end;
+      locals->retval = 0;
+      locals->stop_at_next_vma = 1;
+      return 0;
+    }
+# endif
+  locals->curr_start = start; locals->curr_end = end;
+  return 0;
+}
+
+int
+sigsegv_get_vma (uintptr_t address, struct vma_struct *vma)
+{
+  struct callback_locals locals;
+  locals.address = address;
+  locals.vma = vma;
+  locals.curr_start = 0;
+  locals.curr_end = 0;
+# if STACK_DIRECTION < 0
+  locals.prev_end = 0;
+# else
+  locals.stop_at_next_vma = 0;
+# endif
+  locals.retval = -1;
+
+  vma_iterate (&locals);
+  if (locals.retval < 0)
+    {
+      if (locals.curr_start < locals.curr_end
+          && address >= locals.curr_start && address <= locals.curr_end - 1)
+        {
+          vma->start = locals.curr_start;
+          vma->end = locals.curr_end;
+# if STACK_DIRECTION < 0
+          vma->prev_end = locals.prev_end;
+# else
+          vma->next_start = 0;
+# endif
+          locals.retval = 0;
+        }
+    }
+  if (locals.retval == 0)
+    {
+# if !(STACK_DIRECTION < 0)
+      if (locals.stop_at_next_vma)
+        vma->next_start = 0;
+# endif
+      vma->is_near_this = simple_is_near_this;
+      return 0;
+    }
+
+  return -1;
+}
+
+/* ---------------------------- stackvma-beos.h ---------------------------- */
+
+#elif defined __HAIKU__ /* Haiku */
+
+# include <OS.h> /* get_next_area_info */
+
+struct callback_locals
+{
+  uintptr_t address;
+  struct vma_struct *vma;
+# if STACK_DIRECTION < 0
+  uintptr_t prev;
+# else
+  int stop_at_next_vma;
+# endif
+  int retval;
+};
+
+static int
+callback (struct callback_locals *locals, uintptr_t start, uintptr_t end)
+{
+# if STACK_DIRECTION < 0
+  if (locals->address >= start && locals->address <= end - 1)
+    {
+      locals->vma->start = start;
+      locals->vma->end = end;
+      locals->vma->prev_end = locals->prev;
+      locals->retval = 0;
+      return 1;
+    }
+  locals->prev = end;
+# else
+  if (locals->stop_at_next_vma)
+    {
+      locals->vma->next_start = start;
+      locals->stop_at_next_vma = 0;
+      return 1;
+    }
+  if (locals->address >= start && locals->address <= end - 1)
+    {
+      locals->vma->start = start;
+      locals->vma->end = end;
+      locals->retval = 0;
+      locals->stop_at_next_vma = 1;
+      return 0;
+    }
+# endif
+  return 0;
+}
+
+/* Iterate over the virtual memory areas of the current process.
+   If such iteration is supported, the callback is called once for every
+   virtual memory area, in ascending order, with the following arguments:
+     - LOCALS is the same argument as passed to vma_iterate.
+     - START is the address of the first byte in the area, page-aligned.
+     - END is the address of the last byte in the area plus 1, page-aligned.
+       Note that it may be 0 for the last area in the address space.
+   If the callback returns 0, the iteration continues.  If it returns 1,
+   the iteration terminates prematurely.
+   This function may open file descriptors, but does not call malloc().
+   Return 0 if all went well, or -1 in case of error.  */
+/* This code is a simplified copy (no handling of protection flags) of the
+   code in gnulib's lib/vma-iter.c.  */
+static int
+vma_iterate (struct callback_locals *locals)
+{
+  area_info info;
+  ssize_t cookie;
+
+  cookie = 0;
+  while (get_next_area_info (0, &cookie, &info) == B_OK)
+    {
+      uintptr_t start, end;
+
+      start = (uintptr_t) info.address;
+      end = start + info.size;
+
+      if (callback (locals, start, end))
+        break;
+    }
+  return 0;
+}
+
+int
+sigsegv_get_vma (uintptr_t address, struct vma_struct *vma)
+{
+  struct callback_locals locals;
+  locals.address = address;
+  locals.vma = vma;
+# if STACK_DIRECTION < 0
+  locals.prev = 0;
+# else
+  locals.stop_at_next_vma = 0;
+# endif
+  locals.retval = -1;
+
+  vma_iterate (&locals);
+  if (locals.retval == 0)
+    {
+# if !(STACK_DIRECTION < 0)
+      if (locals.stop_at_next_vma)
+        vma->next_start = 0;
+# endif
+      vma->is_near_this = simple_is_near_this;
+      return 0;
+    }
+  return -1;
+}
+
+/* -------------------------------------------------------------------------- */
+
+#else /* Hurd, Minix, ... */
+
+int
+sigsegv_get_vma (uintptr_t address, struct vma_struct *vma)
+{
+  /* No way.  */
+  return -1;
+}
+
+#endif
diff --git a/src/grep/lib/stackvma.h b/src/grep/lib/stackvma.h
new file mode 100644
index 0000000..1f214a4
--- /dev/null
+++ b/src/grep/lib/stackvma.h
@@ -0,0 +1,62 @@
+/* Determine the virtual memory area of a given address.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+   Copyright (C) 2003-2006  Paolo Bonzini <bonzini@gnu.org>
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible and Paolo Bonzini.  */
+
+#ifndef _STACKVMA_H
+#define _STACKVMA_H
+
+#include <stdint.h>
+
+/* Describes a virtual memory area, with some info about the gap between
+   it and the next or previous virtual memory area.  */
+struct vma_struct
+{
+  uintptr_t start;
+  uintptr_t end;
+#if STACK_DIRECTION < 0
+  /* Info about the gap between this VMA and the previous one.
+     addr must be < vma->start.  */
+  int (*is_near_this) (uintptr_t addr, struct vma_struct *vma);
+  /* Private field, not provided by all sigsegv_get_vma implementations.  */
+  uintptr_t prev_end;
+#endif
+#if STACK_DIRECTION > 0
+  /* Info about the gap between this VMA and the next one.
+     addr must be > vma->end - 1.  */
+  int (*is_near_this) (uintptr_t addr, struct vma_struct *vma);
+  /* Private field, not provided by all sigsegv_get_vma implementations.  */
+  uintptr_t next_start;
+#endif
+};
+
+/* Determines the virtual memory area to which a given address belongs,
+   and returns 0.  Returns -1 if it cannot be determined.
+   This function is used to determine the stack extent when a fault occurs.  */
+extern int sigsegv_get_vma (uintptr_t address, struct vma_struct *vma);
+
+/* Defined if sigsegv_get_vma actually works (i.e. does not always fail).  */
+#if defined __linux__ || defined __ANDROID__ \
+    || defined __FreeBSD_kernel__ || defined __FreeBSD__ || defined __DragonFly__ \
+    || defined __NetBSD__ || defined __OpenBSD__ \
+    || (defined __APPLE__ && defined __MACH__) \
+    || defined _AIX || defined __sgi || defined __sun \
+    || defined __CYGWIN__ || defined __HAIKU__
+# define HAVE_STACKVMA 1
+#endif
+
+#endif /* _STACKVMA_H */
diff --git a/src/grep/lib/stat-time.c b/src/grep/lib/stat-time.c
new file mode 100644
index 0000000..7b92792
--- /dev/null
+++ b/src/grep/lib/stat-time.c
@@ -0,0 +1,21 @@
+/* stat-related time functions.
+
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define _GL_STAT_TIME_INLINE _GL_EXTERN_INLINE
+#include "stat-time.h"
diff --git a/src/grep/lib/stat-time.h b/src/grep/lib/stat-time.h
new file mode 100644
index 0000000..fe3483d
--- /dev/null
+++ b/src/grep/lib/stat-time.h
@@ -0,0 +1,252 @@
+/* stat-related time functions.
+
+   Copyright (C) 2005, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#ifndef STAT_TIME_H
+#define STAT_TIME_H 1
+
+#include "intprops.h"
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <time.h>
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef _GL_STAT_TIME_INLINE
+# define _GL_STAT_TIME_INLINE _GL_INLINE
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* STAT_TIMESPEC (ST, ST_XTIM) is the ST_XTIM member for *ST of type
+   struct timespec, if available.  If not, then STAT_TIMESPEC_NS (ST,
+   ST_XTIM) is the nanosecond component of the ST_XTIM member for *ST,
+   if available.  ST_XTIM can be st_atim, st_ctim, st_mtim, or st_birthtim
+   for access, status change, data modification, or birth (creation)
+   time respectively.
+
+   These macros are private to stat-time.h.  */
+#if _GL_WINDOWS_STAT_TIMESPEC || defined HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
+# if _GL_WINDOWS_STAT_TIMESPEC || defined TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC
+#  define STAT_TIMESPEC(st, st_xtim) ((st)->st_xtim)
+# else
+#  define STAT_TIMESPEC_NS(st, st_xtim) ((st)->st_xtim.tv_nsec)
+# endif
+#elif defined HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC
+# define STAT_TIMESPEC(st, st_xtim) ((st)->st_xtim##espec)
+#elif defined HAVE_STRUCT_STAT_ST_ATIMENSEC
+# define STAT_TIMESPEC_NS(st, st_xtim) ((st)->st_xtim##ensec)
+#elif defined HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC
+# define STAT_TIMESPEC_NS(st, st_xtim) ((st)->st_xtim.st__tim.tv_nsec)
+#endif
+
+/* Return the nanosecond component of *ST's access time.  */
+_GL_STAT_TIME_INLINE long int _GL_ATTRIBUTE_PURE
+get_stat_atime_ns (struct stat const *st)
+{
+# if defined STAT_TIMESPEC
+  return STAT_TIMESPEC (st, st_atim).tv_nsec;
+# elif defined STAT_TIMESPEC_NS
+  return STAT_TIMESPEC_NS (st, st_atim);
+# else
+  return 0;
+# endif
+}
+
+/* Return the nanosecond component of *ST's status change time.  */
+_GL_STAT_TIME_INLINE long int _GL_ATTRIBUTE_PURE
+get_stat_ctime_ns (struct stat const *st)
+{
+# if defined STAT_TIMESPEC
+  return STAT_TIMESPEC (st, st_ctim).tv_nsec;
+# elif defined STAT_TIMESPEC_NS
+  return STAT_TIMESPEC_NS (st, st_ctim);
+# else
+  return 0;
+# endif
+}
+
+/* Return the nanosecond component of *ST's data modification time.  */
+_GL_STAT_TIME_INLINE long int _GL_ATTRIBUTE_PURE
+get_stat_mtime_ns (struct stat const *st)
+{
+# if defined STAT_TIMESPEC
+  return STAT_TIMESPEC (st, st_mtim).tv_nsec;
+# elif defined STAT_TIMESPEC_NS
+  return STAT_TIMESPEC_NS (st, st_mtim);
+# else
+  return 0;
+# endif
+}
+
+/* Return the nanosecond component of *ST's birth time.  */
+_GL_STAT_TIME_INLINE long int _GL_ATTRIBUTE_PURE
+get_stat_birthtime_ns (struct stat const *st _GL_UNUSED)
+{
+# if defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC
+  return STAT_TIMESPEC (st, st_birthtim).tv_nsec;
+# elif defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC
+  return STAT_TIMESPEC_NS (st, st_birthtim);
+# else
+  return 0;
+# endif
+}
+
+/* Return *ST's access time.  */
+_GL_STAT_TIME_INLINE struct timespec _GL_ATTRIBUTE_PURE
+get_stat_atime (struct stat const *st)
+{
+#ifdef STAT_TIMESPEC
+  return STAT_TIMESPEC (st, st_atim);
+#else
+  struct timespec t;
+  t.tv_sec = st->st_atime;
+  t.tv_nsec = get_stat_atime_ns (st);
+  return t;
+#endif
+}
+
+/* Return *ST's status change time.  */
+_GL_STAT_TIME_INLINE struct timespec _GL_ATTRIBUTE_PURE
+get_stat_ctime (struct stat const *st)
+{
+#ifdef STAT_TIMESPEC
+  return STAT_TIMESPEC (st, st_ctim);
+#else
+  struct timespec t;
+  t.tv_sec = st->st_ctime;
+  t.tv_nsec = get_stat_ctime_ns (st);
+  return t;
+#endif
+}
+
+/* Return *ST's data modification time.  */
+_GL_STAT_TIME_INLINE struct timespec _GL_ATTRIBUTE_PURE
+get_stat_mtime (struct stat const *st)
+{
+#ifdef STAT_TIMESPEC
+  return STAT_TIMESPEC (st, st_mtim);
+#else
+  struct timespec t;
+  t.tv_sec = st->st_mtime;
+  t.tv_nsec = get_stat_mtime_ns (st);
+  return t;
+#endif
+}
+
+/* Return *ST's birth time, if available; otherwise return a value
+   with tv_sec and tv_nsec both equal to -1.  */
+_GL_STAT_TIME_INLINE struct timespec _GL_ATTRIBUTE_PURE
+get_stat_birthtime (struct stat const *st _GL_UNUSED)
+{
+  struct timespec t;
+
+#if (defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC \
+     || defined HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC)
+  t = STAT_TIMESPEC (st, st_birthtim);
+#elif defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC
+  t.tv_sec = st->st_birthtime;
+  t.tv_nsec = st->st_birthtimensec;
+#elif defined _WIN32 && ! defined __CYGWIN__
+  /* Native Windows platforms (but not Cygwin) put the "file creation
+     time" in st_ctime (!).  See
+     <https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/stat-functions>.  */
+# if _GL_WINDOWS_STAT_TIMESPEC
+  t = st->st_ctim;
+# else
+  t.tv_sec = st->st_ctime;
+  t.tv_nsec = 0;
+# endif
+#else
+  /* Birth time is not supported.  */
+  t.tv_sec = -1;
+  t.tv_nsec = -1;
+#endif
+
+#if (defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC \
+     || defined HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC \
+     || defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC)
+  /* FreeBSD and NetBSD sometimes signal the absence of knowledge by
+     using zero.  Attempt to work around this problem.  Alas, this can
+     report failure even for valid timestamps.  Also, NetBSD
+     sometimes returns junk in the birth time fields; work around this
+     bug if it is detected.  */
+  if (! (t.tv_sec && 0 <= t.tv_nsec && t.tv_nsec < 1000000000))
+    {
+      t.tv_sec = -1;
+      t.tv_nsec = -1;
+    }
+#endif
+
+  return t;
+}
+
+/* If a stat-like function returned RESULT, normalize the timestamps
+   in *ST, in case this platform suffers from the Solaris 11 bug where
+   tv_nsec might be negative.  Return the adjusted RESULT, setting
+   errno to EOVERFLOW if normalization overflowed.  This function
+   is intended to be private to this .h file.  */
+_GL_STAT_TIME_INLINE int
+stat_time_normalize (int result, struct stat *st _GL_UNUSED)
+{
+#if defined __sun && defined STAT_TIMESPEC
+  if (result == 0)
+    {
+      long int timespec_hz = 1000000000;
+      short int const ts_off[] = { offsetof (struct stat, st_atim),
+                                   offsetof (struct stat, st_mtim),
+                                   offsetof (struct stat, st_ctim) };
+      int i;
+      for (i = 0; i < sizeof ts_off / sizeof *ts_off; i++)
+        {
+          struct timespec *ts = (struct timespec *) ((char *) st + ts_off[i]);
+          long int q = ts->tv_nsec / timespec_hz;
+          long int r = ts->tv_nsec % timespec_hz;
+          if (r < 0)
+            {
+              r += timespec_hz;
+              q--;
+            }
+          ts->tv_nsec = r;
+          /* Overflow is possible, as Solaris 11 stat can yield
+             tv_sec == TYPE_MINIMUM (time_t) && tv_nsec == -1000000000.
+             INT_ADD_WRAPV is OK, since time_t is signed on Solaris.  */
+          if (INT_ADD_WRAPV (q, ts->tv_sec, &ts->tv_sec))
+            {
+              errno = EOVERFLOW;
+              return -1;
+            }
+        }
+    }
+#endif
+  return result;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+_GL_INLINE_HEADER_END
+
+#endif
diff --git a/src/grep/lib/stat-w32.c b/src/grep/lib/stat-w32.c
new file mode 100644
index 0000000..4164199
--- /dev/null
+++ b/src/grep/lib/stat-w32.c
@@ -0,0 +1,461 @@
+/* Core of implementation of fstat and stat for native Windows.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible.  */
+
+#include <config.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+
+/* Attempt to make <windows.h> define FILE_ID_INFO.
+   But ensure that the redefinition of _WIN32_WINNT does not make us assume
+   Windows Vista or newer when building for an older version of Windows.  */
+#if HAVE_SDKDDKVER_H
+# include <sdkddkver.h>
+# if _WIN32_WINNT >= _WIN32_WINNT_VISTA
+#  define WIN32_ASSUME_VISTA 1
+# else
+#  define WIN32_ASSUME_VISTA 0
+# endif
+# if !defined _WIN32_WINNT || (_WIN32_WINNT < _WIN32_WINNT_WIN8)
+#  undef _WIN32_WINNT
+#  define _WIN32_WINNT _WIN32_WINNT_WIN8
+# endif
+#else
+# define WIN32_ASSUME_VISTA (_WIN32_WINNT >= _WIN32_WINNT_VISTA)
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <unistd.h>
+#include <windows.h>
+
+/* Specification.  */
+#include "stat-w32.h"
+
+#include "pathmax.h"
+#include "verify.h"
+
+/* Don't assume that UNICODE is not defined.  */
+#undef LoadLibrary
+#define LoadLibrary LoadLibraryA
+#undef GetFinalPathNameByHandle
+#define GetFinalPathNameByHandle GetFinalPathNameByHandleA
+
+/* Older mingw headers do not define VOLUME_NAME_NONE.  */
+#ifndef VOLUME_NAME_NONE
+# define VOLUME_NAME_NONE 4
+#endif
+
+#if !WIN32_ASSUME_VISTA
+
+/* Avoid warnings from gcc -Wcast-function-type.  */
+# define GetProcAddress \
+   (void *) GetProcAddress
+
+# if _GL_WINDOWS_STAT_INODES == 2
+/* GetFileInformationByHandleEx was introduced only in Windows Vista.  */
+typedef DWORD (WINAPI * GetFileInformationByHandleExFuncType) (HANDLE hFile,
+                                                               FILE_INFO_BY_HANDLE_CLASS fiClass,
+                                                               LPVOID lpBuffer,
+                                                               DWORD dwBufferSize);
+static GetFileInformationByHandleExFuncType GetFileInformationByHandleExFunc = NULL;
+# endif
+/* GetFinalPathNameByHandle was introduced only in Windows Vista.  */
+typedef DWORD (WINAPI * GetFinalPathNameByHandleFuncType) (HANDLE hFile,
+                                                           LPSTR lpFilePath,
+                                                           DWORD lenFilePath,
+                                                           DWORD dwFlags);
+static GetFinalPathNameByHandleFuncType GetFinalPathNameByHandleFunc = NULL;
+static BOOL initialized = FALSE;
+
+static void
+initialize (void)
+{
+  HMODULE kernel32 = LoadLibrary ("kernel32.dll");
+  if (kernel32 != NULL)
+    {
+# if _GL_WINDOWS_STAT_INODES == 2
+      GetFileInformationByHandleExFunc =
+        (GetFileInformationByHandleExFuncType) GetProcAddress (kernel32, "GetFileInformationByHandleEx");
+# endif
+      GetFinalPathNameByHandleFunc =
+        (GetFinalPathNameByHandleFuncType) GetProcAddress (kernel32, "GetFinalPathNameByHandleA");
+    }
+  initialized = TRUE;
+}
+
+#else
+
+# define GetFileInformationByHandleExFunc GetFileInformationByHandleEx
+# define GetFinalPathNameByHandleFunc GetFinalPathNameByHandle
+
+#endif
+
+/* Converts a FILETIME to GMT time since 1970-01-01 00:00:00.  */
+#if _GL_WINDOWS_STAT_TIMESPEC
+struct timespec
+_gl_convert_FILETIME_to_timespec (const FILETIME *ft)
+{
+  struct timespec result;
+  /* FILETIME: <https://docs.microsoft.com/en-us/windows/desktop/api/minwinbase/ns-minwinbase-filetime> */
+  unsigned long long since_1601 =
+    ((unsigned long long) ft->dwHighDateTime << 32)
+    | (unsigned long long) ft->dwLowDateTime;
+  if (since_1601 == 0)
+    {
+      result.tv_sec = 0;
+      result.tv_nsec = 0;
+    }
+  else
+    {
+      /* Between 1601-01-01 and 1970-01-01 there were 280 normal years and 89
+         leap years, in total 134774 days.  */
+      unsigned long long since_1970 =
+        since_1601 - (unsigned long long) 134774 * (unsigned long long) 86400 * (unsigned long long) 10000000;
+      result.tv_sec = since_1970 / (unsigned long long) 10000000;
+      result.tv_nsec = (unsigned long) (since_1970 % (unsigned long long) 10000000) * 100;
+    }
+  return result;
+}
+#else
+time_t
+_gl_convert_FILETIME_to_POSIX (const FILETIME *ft)
+{
+  /* FILETIME: <https://docs.microsoft.com/en-us/windows/desktop/api/minwinbase/ns-minwinbase-filetime> */
+  unsigned long long since_1601 =
+    ((unsigned long long) ft->dwHighDateTime << 32)
+    | (unsigned long long) ft->dwLowDateTime;
+  if (since_1601 == 0)
+    return 0;
+  else
+    {
+      /* Between 1601-01-01 and 1970-01-01 there were 280 normal years and 89
+         leap years, in total 134774 days.  */
+      unsigned long long since_1970 =
+        since_1601 - (unsigned long long) 134774 * (unsigned long long) 86400 * (unsigned long long) 10000000;
+      return since_1970 / (unsigned long long) 10000000;
+    }
+}
+#endif
+
+/* Fill *BUF with information about the file designated by H.
+   PATH is the file name, if known, otherwise NULL.
+   Return 0 if successful, or -1 with errno set upon failure.  */
+int
+_gl_fstat_by_handle (HANDLE h, const char *path, struct stat *buf)
+{
+  /* GetFileType
+     <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfiletype> */
+  DWORD type = GetFileType (h);
+  if (type == FILE_TYPE_DISK)
+    {
+#if !WIN32_ASSUME_VISTA
+      if (!initialized)
+        initialize ();
+#endif
+
+      /* st_mode can be determined through
+         GetFileAttributesEx
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileattributesexa>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_win32_file_attribute_data>
+         or through
+         GetFileInformationByHandle
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileinformationbyhandle>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_by_handle_file_information>
+         or through
+         GetFileInformationByHandleEx with argument FileBasicInfo
+         <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getfileinformationbyhandleex>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/ns-winbase-_file_basic_info>
+         The latter requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher.  */
+      BY_HANDLE_FILE_INFORMATION info;
+      if (! GetFileInformationByHandle (h, &info))
+        goto failed;
+
+      /* Test for error conditions before starting to fill *buf.  */
+      if (sizeof (buf->st_size) <= 4 && info.nFileSizeHigh > 0)
+        {
+          errno = EOVERFLOW;
+          return -1;
+        }
+
+#if _GL_WINDOWS_STAT_INODES
+      /* st_ino can be determined through
+         GetFileInformationByHandle
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileinformationbyhandle>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_by_handle_file_information>
+         as 64 bits, or through
+         GetFileInformationByHandleEx with argument FileIdInfo
+         <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getfileinformationbyhandleex>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/ns-winbase-_file_id_info>
+         as 128 bits.
+         The latter requires -D_WIN32_WINNT=_WIN32_WINNT_WIN8 or higher.  */
+      /* Experiments show that GetFileInformationByHandleEx does not provide
+         much more information than GetFileInformationByHandle:
+           * The dwVolumeSerialNumber from GetFileInformationByHandle is equal
+             to the low 32 bits of the 64-bit VolumeSerialNumber from
+             GetFileInformationByHandleEx, and is apparently sufficient for
+             identifying the device.
+           * The nFileIndex from GetFileInformationByHandle is equal to the low
+             64 bits of the 128-bit FileId from GetFileInformationByHandleEx,
+             and the high 64 bits of this 128-bit FileId are zero.
+           * On a FAT file system, GetFileInformationByHandleEx fails with error
+             ERROR_INVALID_PARAMETER, whereas GetFileInformationByHandle
+             succeeds.
+           * On a CIFS/SMB file system, GetFileInformationByHandleEx fails with
+             error ERROR_INVALID_LEVEL, whereas GetFileInformationByHandle
+             succeeds.  */
+# if _GL_WINDOWS_STAT_INODES == 2
+      if (GetFileInformationByHandleExFunc != NULL)
+        {
+          FILE_ID_INFO id;
+          if (GetFileInformationByHandleExFunc (h, FileIdInfo, &id, sizeof (id)))
+            {
+              buf->st_dev = id.VolumeSerialNumber;
+              verify (sizeof (ino_t) == sizeof (id.FileId));
+              memcpy (&buf->st_ino, &id.FileId, sizeof (ino_t));
+              goto ino_done;
+            }
+          else
+            {
+              switch (GetLastError ())
+                {
+                case ERROR_INVALID_PARAMETER: /* older Windows version, or FAT */
+                case ERROR_INVALID_LEVEL: /* CIFS/SMB file system */
+                  goto fallback;
+                default:
+                  goto failed;
+                }
+            }
+        }
+     fallback: ;
+      /* Fallback for older Windows versions.  */
+      buf->st_dev = info.dwVolumeSerialNumber;
+      buf->st_ino._gl_ino[0] = ((ULONGLONG) info.nFileIndexHigh << 32) | (ULONGLONG) info.nFileIndexLow;
+      buf->st_ino._gl_ino[1] = 0;
+     ino_done: ;
+# else /* _GL_WINDOWS_STAT_INODES == 1 */
+      buf->st_dev = info.dwVolumeSerialNumber;
+      buf->st_ino = ((ULONGLONG) info.nFileIndexHigh << 32) | (ULONGLONG) info.nFileIndexLow;
+# endif
+#else
+      /* st_ino is not wide enough for identifying a file on a device.
+         Without st_ino, st_dev is pointless.  */
+      buf->st_dev = 0;
+      buf->st_ino = 0;
+#endif
+
+      /* st_mode.  */
+      unsigned int mode =
+        /* XXX How to handle FILE_ATTRIBUTE_REPARSE_POINT ?  */
+        ((info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? _S_IFDIR | S_IEXEC_UGO : _S_IFREG)
+        | S_IREAD_UGO
+        | ((info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) ? 0 : S_IWRITE_UGO);
+      if (!(info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
+        {
+          /* Determine whether the file is executable by looking at the file
+             name suffix.
+             If the file name is already known, use it. Otherwise, for
+             non-empty files, it can be determined through
+             GetFinalPathNameByHandle
+             <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfinalpathnamebyhandlea>
+             or through
+             GetFileInformationByHandleEx with argument FileNameInfo
+             <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getfileinformationbyhandleex>
+             <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/ns-winbase-_file_name_info>
+             Both require -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher.  */
+          if (info.nFileSizeHigh > 0 || info.nFileSizeLow > 0)
+            {
+              char fpath[PATH_MAX];
+              if (path != NULL
+                  || (GetFinalPathNameByHandleFunc != NULL
+                      && GetFinalPathNameByHandleFunc (h, fpath, sizeof (fpath), VOLUME_NAME_NONE)
+                         < sizeof (fpath)
+                      && (path = fpath, 1)))
+                {
+                  const char *last_dot = NULL;
+                  const char *p;
+                  for (p = path; *p != '\0'; p++)
+                    if (*p == '.')
+                      last_dot = p;
+                  if (last_dot != NULL)
+                    {
+                      const char *suffix = last_dot + 1;
+                      if (_stricmp (suffix, "exe") == 0
+                          || _stricmp (suffix, "bat") == 0
+                          || _stricmp (suffix, "cmd") == 0
+                          || _stricmp (suffix, "com") == 0)
+                        mode |= S_IEXEC_UGO;
+                    }
+                }
+              else
+                /* Cannot determine file name.  Pretend that it is executable.  */
+                mode |= S_IEXEC_UGO;
+            }
+        }
+      buf->st_mode = mode;
+
+      /* st_nlink can be determined through
+         GetFileInformationByHandle
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileinformationbyhandle>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_by_handle_file_information>
+         or through
+         GetFileInformationByHandleEx with argument FileStandardInfo
+         <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getfileinformationbyhandleex>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/ns-winbase-_file_standard_info>
+         The latter requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher.  */
+      buf->st_nlink = (info.nNumberOfLinks > SHRT_MAX ? SHRT_MAX : info.nNumberOfLinks);
+
+      /* There's no easy way to map the Windows SID concept to an integer.  */
+      buf->st_uid = 0;
+      buf->st_gid = 0;
+
+      /* st_rdev is irrelevant for normal files and directories.  */
+      buf->st_rdev = 0;
+
+      /* st_size can be determined through
+         GetFileSizeEx
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfilesizeex>
+         or through
+         GetFileAttributesEx
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileattributesexa>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_win32_file_attribute_data>
+         or through
+         GetFileInformationByHandle
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileinformationbyhandle>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_by_handle_file_information>
+         or through
+         GetFileInformationByHandleEx with argument FileStandardInfo
+         <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getfileinformationbyhandleex>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/ns-winbase-_file_standard_info>
+         The latter requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher.  */
+      if (sizeof (buf->st_size) <= 4)
+        /* Range check already done above.  */
+        buf->st_size = info.nFileSizeLow;
+      else
+        buf->st_size = ((long long) info.nFileSizeHigh << 32) | (long long) info.nFileSizeLow;
+
+      /* st_atime, st_mtime, st_ctime can be determined through
+         GetFileTime
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfiletime>
+         or through
+         GetFileAttributesEx
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileattributesexa>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_win32_file_attribute_data>
+         or through
+         GetFileInformationByHandle
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileinformationbyhandle>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_by_handle_file_information>
+         or through
+         GetFileInformationByHandleEx with argument FileBasicInfo
+         <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getfileinformationbyhandleex>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/winbase/ns-winbase-_file_basic_info>
+         The latter requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher.  */
+#if _GL_WINDOWS_STAT_TIMESPEC
+      buf->st_atim = _gl_convert_FILETIME_to_timespec (&info.ftLastAccessTime);
+      buf->st_mtim = _gl_convert_FILETIME_to_timespec (&info.ftLastWriteTime);
+      buf->st_ctim = _gl_convert_FILETIME_to_timespec (&info.ftCreationTime);
+#else
+      buf->st_atime = _gl_convert_FILETIME_to_POSIX (&info.ftLastAccessTime);
+      buf->st_mtime = _gl_convert_FILETIME_to_POSIX (&info.ftLastWriteTime);
+      buf->st_ctime = _gl_convert_FILETIME_to_POSIX (&info.ftCreationTime);
+#endif
+
+      return 0;
+    }
+  else if (type == FILE_TYPE_CHAR || type == FILE_TYPE_PIPE)
+    {
+      buf->st_dev = 0;
+#if _GL_WINDOWS_STAT_INODES == 2
+      buf->st_ino._gl_ino[0] = buf->st_ino._gl_ino[1] = 0;
+#else
+      buf->st_ino = 0;
+#endif
+      buf->st_mode = (type == FILE_TYPE_PIPE ? _S_IFIFO : _S_IFCHR);
+      buf->st_nlink = 1;
+      buf->st_uid = 0;
+      buf->st_gid = 0;
+      buf->st_rdev = 0;
+      if (type == FILE_TYPE_PIPE)
+        {
+          /* PeekNamedPipe
+             <https://msdn.microsoft.com/en-us/library/aa365779.aspx> */
+          DWORD bytes_available;
+          if (PeekNamedPipe (h, NULL, 0, NULL, &bytes_available, NULL))
+            buf->st_size = bytes_available;
+          else
+            buf->st_size = 0;
+        }
+      else
+        buf->st_size = 0;
+#if _GL_WINDOWS_STAT_TIMESPEC
+      buf->st_atim.tv_sec = 0; buf->st_atim.tv_nsec = 0;
+      buf->st_mtim.tv_sec = 0; buf->st_mtim.tv_nsec = 0;
+      buf->st_ctim.tv_sec = 0; buf->st_ctim.tv_nsec = 0;
+#else
+      buf->st_atime = 0;
+      buf->st_mtime = 0;
+      buf->st_ctime = 0;
+#endif
+      return 0;
+    }
+  else
+    {
+      errno = ENOENT;
+      return -1;
+    }
+
+ failed:
+  {
+    DWORD error = GetLastError ();
+    #if 0
+    fprintf (stderr, "_gl_fstat_by_handle error 0x%x\n", (unsigned int) error);
+    #endif
+    switch (error)
+      {
+      case ERROR_ACCESS_DENIED:
+      case ERROR_SHARING_VIOLATION:
+        errno = EACCES;
+        break;
+
+      case ERROR_OUTOFMEMORY:
+        errno = ENOMEM;
+        break;
+
+      case ERROR_WRITE_FAULT:
+      case ERROR_READ_FAULT:
+      case ERROR_GEN_FAILURE:
+        errno = EIO;
+        break;
+
+      default:
+        errno = EINVAL;
+        break;
+      }
+    return -1;
+  }
+}
+
+#else
+
+/* This declaration is solely to ensure that after preprocessing
+   this file is never empty.  */
+typedef int dummy;
+
+#endif
diff --git a/src/grep/lib/stat-w32.h b/src/grep/lib/stat-w32.h
new file mode 100644
index 0000000..5b56c09
--- /dev/null
+++ b/src/grep/lib/stat-w32.h
@@ -0,0 +1,37 @@
+/* Core of implementation of fstat and stat for native Windows.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _STAT_W32_H
+#define _STAT_W32_H 1
+
+/* Converts a FILETIME to GMT time since 1970-01-01 00:00:00.  */
+#if _GL_WINDOWS_STAT_TIMESPEC
+extern struct timespec _gl_convert_FILETIME_to_timespec (const FILETIME *ft);
+#else
+extern time_t _gl_convert_FILETIME_to_POSIX (const FILETIME *ft);
+#endif
+
+/* Fill *BUF with information about the file designated by H.
+   PATH is the file name, if known, otherwise NULL.
+   Return 0 if successful, or -1 with errno set upon failure.  */
+extern int _gl_fstat_by_handle (HANDLE h, const char *path, struct stat *buf);
+
+/* Bitmasks for st_mode.  */
+#define S_IREAD_UGO  (_S_IREAD | (_S_IREAD >> 3) | (_S_IREAD >> 6))
+#define S_IWRITE_UGO (_S_IWRITE | (_S_IWRITE >> 3) | (_S_IWRITE >> 6))
+#define S_IEXEC_UGO  (_S_IEXEC | (_S_IEXEC >> 3) | (_S_IEXEC >> 6))
+
+#endif /* _STAT_W32_H */
diff --git a/src/grep/lib/stat.c b/src/grep/lib/stat.c
new file mode 100644
index 0000000..bc9a767
--- /dev/null
+++ b/src/grep/lib/stat.c
@@ -0,0 +1,440 @@
+/* Work around platform bugs in stat.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake and Bruno Haible.  */
+
+/* If the user's config.h happens to include <sys/stat.h>, let it include only
+   the system's <sys/stat.h> here, so that orig_stat doesn't recurse to
+   rpl_stat.  */
+#define __need_system_sys_stat_h
+#include <config.h>
+
+/* Get the original definition of stat.  It might be defined as a macro.  */
+#include <sys/types.h>
+#include <sys/stat.h>
+#undef __need_system_sys_stat_h
+
+#if defined _WIN32 && ! defined __CYGWIN__
+# define WINDOWS_NATIVE
+#endif
+
+#if !defined WINDOWS_NATIVE
+
+static int
+orig_stat (const char *filename, struct stat *buf)
+{
+  return stat (filename, buf);
+}
+
+#endif
+
+/* Specification.  */
+#ifdef __osf__
+/* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc
+   eliminates this include because of the preliminary #include <sys/stat.h>
+   above.  */
+# include "sys/stat.h"
+#else
+# include <sys/stat.h>
+#endif
+
+#include "stat-time.h"
+
+#include <errno.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <string.h>
+#include "filename.h"
+#include "malloca.h"
+#include "verify.h"
+
+#ifdef WINDOWS_NATIVE
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# include "stat-w32.h"
+/* Don't assume that UNICODE is not defined.  */
+# undef WIN32_FIND_DATA
+# define WIN32_FIND_DATA WIN32_FIND_DATAA
+# undef CreateFile
+# define CreateFile CreateFileA
+# undef FindFirstFile
+# define FindFirstFile FindFirstFileA
+#endif
+
+#ifdef WINDOWS_NATIVE
+/* Return TRUE if the given file name denotes an UNC root.  */
+static BOOL
+is_unc_root (const char *rname)
+{
+  /* Test whether it has the syntax '\\server\share'.  */
+  if (ISSLASH (rname[0]) && ISSLASH (rname[1]))
+    {
+      /* It starts with two slashes.  Find the next slash.  */
+      const char *p = rname + 2;
+      const char *q = p;
+      while (*q != '\0' && !ISSLASH (*q))
+        q++;
+      if (q > p && *q != '\0')
+        {
+          /* Found the next slash at q.  */
+          q++;
+          const char *r = q;
+          while (*r != '\0' && !ISSLASH (*r))
+            r++;
+          if (r > q && *r == '\0')
+            return TRUE;
+        }
+    }
+  return FALSE;
+}
+#endif
+
+/* Store information about NAME into ST.  Work around bugs with
+   trailing slashes.  Mingw has other bugs (such as st_ino always
+   being 0 on success) which this wrapper does not work around.  But
+   at least this implementation provides the ability to emulate fchdir
+   correctly.  */
+
+int
+rpl_stat (char const *name, struct stat *buf)
+{
+#ifdef WINDOWS_NATIVE
+  /* Fill the fields ourselves, because the original stat function returns
+     values for st_atime, st_mtime, st_ctime that depend on the current time
+     zone.  See
+     <https://lists.gnu.org/r/bug-gnulib/2017-04/msg00134.html>  */
+  /* XXX Should we convert to wchar_t* and prepend '\\?\', in order to work
+     around length limitations
+     <https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file> ?  */
+
+  /* POSIX <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13>
+     specifies: "More than two leading <slash> characters shall be treated as
+     a single <slash> character."  */
+  if (ISSLASH (name[0]) && ISSLASH (name[1]) && ISSLASH (name[2]))
+    {
+      name += 2;
+      while (ISSLASH (name[1]))
+        name++;
+    }
+
+  size_t len = strlen (name);
+  size_t drive_prefix_len = (HAS_DEVICE (name) ? 2 : 0);
+
+  /* Remove trailing slashes (except the very first one, at position
+     drive_prefix_len), but remember their presence.  */
+  size_t rlen;
+  bool check_dir = false;
+
+  rlen = len;
+  while (rlen > drive_prefix_len && ISSLASH (name[rlen-1]))
+    {
+      check_dir = true;
+      if (rlen == drive_prefix_len + 1)
+        break;
+      rlen--;
+    }
+
+  /* Handle '' and 'C:'.  */
+  if (!check_dir && rlen == drive_prefix_len)
+    {
+      errno = ENOENT;
+      return -1;
+    }
+
+  /* Handle '\\'.  */
+  if (rlen == 1 && ISSLASH (name[0]) && len >= 2)
+    {
+      errno = ENOENT;
+      return -1;
+    }
+
+  const char *rname;
+  char *malloca_rname;
+  if (rlen == len)
+    {
+      rname = name;
+      malloca_rname = NULL;
+    }
+  else
+    {
+      malloca_rname = malloca (rlen + 1);
+      if (malloca_rname == NULL)
+        {
+          errno = ENOMEM;
+          return -1;
+        }
+      memcpy (malloca_rname, name, rlen);
+      malloca_rname[rlen] = '\0';
+      rname = malloca_rname;
+    }
+
+  /* There are two ways to get at the requested information:
+       - by scanning the parent directory and examining the relevant
+         directory entry,
+       - by opening the file directly.
+     The first approach fails for root directories (e.g. 'C:\') and
+     UNC root directories (e.g. '\\server\share').
+     The second approach fails for some system files (e.g. 'C:\pagefile.sys'
+     and 'C:\hiberfil.sys'): ERROR_SHARING_VIOLATION.
+     The second approach gives more information (in particular, correct
+     st_dev, st_ino, st_nlink fields).
+     So we use the second approach and, as a fallback except for root and
+     UNC root directories, also the first approach.  */
+  {
+    int ret;
+
+    {
+      /* Approach based on the file.  */
+
+      /* Open a handle to the file.
+         CreateFile
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-createfilea>
+         <https://docs.microsoft.com/en-us/windows/desktop/FileIO/creating-and-opening-files>  */
+      HANDLE h =
+        CreateFile (rname,
+                    FILE_READ_ATTRIBUTES,
+                    FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                    NULL,
+                    OPEN_EXISTING,
+                    /* FILE_FLAG_POSIX_SEMANTICS (treat file names that differ only
+                       in case as different) makes sense only when applied to *all*
+                       filesystem operations.  */
+                    FILE_FLAG_BACKUP_SEMANTICS /* | FILE_FLAG_POSIX_SEMANTICS */,
+                    NULL);
+      if (h != INVALID_HANDLE_VALUE)
+        {
+          ret = _gl_fstat_by_handle (h, rname, buf);
+          CloseHandle (h);
+          goto done;
+        }
+    }
+
+    /* Test for root and UNC root directories.  */
+    if ((rlen == drive_prefix_len + 1 && ISSLASH (rname[drive_prefix_len]))
+        || is_unc_root (rname))
+      goto failed;
+
+    /* Fallback.  */
+    {
+      /* Approach based on the directory entry.  */
+
+      if (strchr (rname, '?') != NULL || strchr (rname, '*') != NULL)
+        {
+          /* Other Windows API functions would fail with error
+             ERROR_INVALID_NAME.  */
+          if (malloca_rname != NULL)
+            freea (malloca_rname);
+          errno = ENOENT;
+          return -1;
+        }
+
+      /* Get the details about the directory entry.  This can be done through
+         FindFirstFile
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-findfirstfilea>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/minwinbase/ns-minwinbase-_win32_find_dataa>
+         or through
+         FindFirstFileEx with argument FindExInfoBasic
+         <https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-findfirstfileexa>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/minwinbase/ne-minwinbase-findex_info_levels>
+         <https://docs.microsoft.com/en-us/windows/desktop/api/minwinbase/ns-minwinbase-_win32_find_dataa>  */
+      WIN32_FIND_DATA info;
+      HANDLE h = FindFirstFile (rname, &info);
+      if (h == INVALID_HANDLE_VALUE)
+        goto failed;
+
+      /* Test for error conditions before starting to fill *buf.  */
+      if (sizeof (buf->st_size) <= 4 && info.nFileSizeHigh > 0)
+        {
+          FindClose (h);
+          if (malloca_rname != NULL)
+            freea (malloca_rname);
+          errno = EOVERFLOW;
+          return -1;
+        }
+
+# if _GL_WINDOWS_STAT_INODES
+      buf->st_dev = 0;
+#  if _GL_WINDOWS_STAT_INODES == 2
+      buf->st_ino._gl_ino[0] = buf->st_ino._gl_ino[1] = 0;
+#  else /* _GL_WINDOWS_STAT_INODES == 1 */
+      buf->st_ino = 0;
+#  endif
+# else
+      /* st_ino is not wide enough for identifying a file on a device.
+         Without st_ino, st_dev is pointless.  */
+      buf->st_dev = 0;
+      buf->st_ino = 0;
+# endif
+
+      /* st_mode.  */
+      unsigned int mode =
+        /* XXX How to handle FILE_ATTRIBUTE_REPARSE_POINT ?  */
+        ((info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? _S_IFDIR | S_IEXEC_UGO : _S_IFREG)
+        | S_IREAD_UGO
+        | ((info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) ? 0 : S_IWRITE_UGO);
+      if (!(info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
+        {
+          /* Determine whether the file is executable by looking at the file
+             name suffix.  */
+          if (info.nFileSizeHigh > 0 || info.nFileSizeLow > 0)
+            {
+              const char *last_dot = NULL;
+              const char *p;
+              for (p = info.cFileName; *p != '\0'; p++)
+                if (*p == '.')
+                  last_dot = p;
+              if (last_dot != NULL)
+                {
+                  const char *suffix = last_dot + 1;
+                  if (_stricmp (suffix, "exe") == 0
+                      || _stricmp (suffix, "bat") == 0
+                      || _stricmp (suffix, "cmd") == 0
+                      || _stricmp (suffix, "com") == 0)
+                    mode |= S_IEXEC_UGO;
+                }
+            }
+        }
+      buf->st_mode = mode;
+
+      /* st_nlink.  Ignore hard links here.  */
+      buf->st_nlink = 1;
+
+      /* There's no easy way to map the Windows SID concept to an integer.  */
+      buf->st_uid = 0;
+      buf->st_gid = 0;
+
+      /* st_rdev is irrelevant for normal files and directories.  */
+      buf->st_rdev = 0;
+
+      /* st_size.  */
+      if (sizeof (buf->st_size) <= 4)
+        /* Range check already done above.  */
+        buf->st_size = info.nFileSizeLow;
+      else
+        buf->st_size = ((long long) info.nFileSizeHigh << 32) | (long long) info.nFileSizeLow;
+
+      /* st_atime, st_mtime, st_ctime.  */
+# if _GL_WINDOWS_STAT_TIMESPEC
+      buf->st_atim = _gl_convert_FILETIME_to_timespec (&info.ftLastAccessTime);
+      buf->st_mtim = _gl_convert_FILETIME_to_timespec (&info.ftLastWriteTime);
+      buf->st_ctim = _gl_convert_FILETIME_to_timespec (&info.ftCreationTime);
+# else
+      buf->st_atime = _gl_convert_FILETIME_to_POSIX (&info.ftLastAccessTime);
+      buf->st_mtime = _gl_convert_FILETIME_to_POSIX (&info.ftLastWriteTime);
+      buf->st_ctime = _gl_convert_FILETIME_to_POSIX (&info.ftCreationTime);
+# endif
+
+      FindClose (h);
+
+      ret = 0;
+    }
+
+   done:
+    if (ret >= 0 && check_dir && !S_ISDIR (buf->st_mode))
+      {
+        errno = ENOTDIR;
+        ret = -1;
+      }
+    if (malloca_rname != NULL)
+      {
+        int saved_errno = errno;
+        freea (malloca_rname);
+        errno = saved_errno;
+      }
+    return ret;
+  }
+
+ failed:
+  {
+    DWORD error = GetLastError ();
+    #if 0
+    fprintf (stderr, "rpl_stat error 0x%x\n", (unsigned int) error);
+    #endif
+
+    if (malloca_rname != NULL)
+      freea (malloca_rname);
+
+    switch (error)
+      {
+      /* Some of these errors probably cannot happen with the specific flags
+         that we pass to CreateFile.  But who knows...  */
+      case ERROR_FILE_NOT_FOUND: /* The last component of rname does not exist.  */
+      case ERROR_PATH_NOT_FOUND: /* Some directory component in rname does not exist.  */
+      case ERROR_BAD_PATHNAME:   /* rname is such as '\\server'.  */
+      case ERROR_BAD_NET_NAME:   /* rname is such as '\\server\nonexistentshare'.  */
+      case ERROR_INVALID_NAME:   /* rname contains wildcards, misplaced colon, etc.  */
+      case ERROR_DIRECTORY:
+        errno = ENOENT;
+        break;
+
+      case ERROR_ACCESS_DENIED:  /* rname is such as 'C:\System Volume Information\foo'.  */
+      case ERROR_SHARING_VIOLATION: /* rname is such as 'C:\pagefile.sys' (second approach only).  */
+                                    /* XXX map to EACCES or EPERM? */
+        errno = EACCES;
+        break;
+
+      case ERROR_OUTOFMEMORY:
+        errno = ENOMEM;
+        break;
+
+      case ERROR_WRITE_PROTECT:
+        errno = EROFS;
+        break;
+
+      case ERROR_WRITE_FAULT:
+      case ERROR_READ_FAULT:
+      case ERROR_GEN_FAILURE:
+        errno = EIO;
+        break;
+
+      case ERROR_BUFFER_OVERFLOW:
+      case ERROR_FILENAME_EXCED_RANGE:
+        errno = ENAMETOOLONG;
+        break;
+
+      case ERROR_DELETE_PENDING: /* XXX map to EACCES or EPERM? */
+        errno = EPERM;
+        break;
+
+      default:
+        errno = EINVAL;
+        break;
+      }
+
+    return -1;
+  }
+#else
+  int result = orig_stat (name, buf);
+  if (result == 0)
+    {
+# if REPLACE_FUNC_STAT_FILE
+      /* Solaris 9 mistakenly succeeds when given a non-directory with a
+         trailing slash.  */
+      if (!S_ISDIR (buf->st_mode))
+        {
+          size_t len = strlen (name);
+          if (ISSLASH (name[len - 1]))
+            {
+              errno = ENOTDIR;
+              return -1;
+            }
+        }
+# endif /* REPLACE_FUNC_STAT_FILE */
+      result = stat_time_normalize (result, buf);
+    }
+  return result;
+#endif
+}
diff --git a/src/grep/lib/stdalign.in.h b/src/grep/lib/stdalign.in.h
new file mode 100644
index 0000000..592d58e
--- /dev/null
+++ b/src/grep/lib/stdalign.in.h
@@ -0,0 +1,127 @@
+/* A substitute for ISO C11 <stdalign.h>.
+
+   Copyright 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert and Bruno Haible.  */
+
+#ifndef _GL_STDALIGN_H
+#define _GL_STDALIGN_H
+
+/* ISO C11 <stdalign.h> for platforms that lack it.
+
+   References:
+   ISO C11 (latest free draft
+   <http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf>)
+   sections 6.5.3.4, 6.7.5, 7.15.
+   C++11 (latest free draft
+   <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf>)
+   section 18.10. */
+
+/* alignof (TYPE), also known as _Alignof (TYPE), yields the alignment
+   requirement of a structure member (i.e., slot or field) that is of
+   type TYPE, as an integer constant expression.
+
+   This differs from GCC's and clang's __alignof__ operator, which can
+   yield a better-performing alignment for an object of that type.  For
+   example, on x86 with GCC and on Linux/x86 with clang,
+   __alignof__ (double) and __alignof__ (long long) are 8, whereas
+   alignof (double) and alignof (long long) are 4 unless the option
+   '-malign-double' is used.
+
+   The result cannot be used as a value for an 'enum' constant, if you
+   want to be portable to HP-UX 10.20 cc and AIX 3.2.5 xlc.
+
+   Include <stddef.h> for offsetof.  */
+#include <stddef.h>
+
+/* FreeBSD 9.1 <sys/cdefs.h>, included by <stddef.h> and lots of other
+   standard headers, defines conflicting implementations of _Alignas
+   and _Alignof that are no better than ours; override them.  */
+#undef _Alignas
+#undef _Alignof
+
+/* GCC releases before GCC 4.9 had a bug in _Alignof.  See GCC bug 52023
+   <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52023>.
+   clang versions < 8.0.0 have the same bug.  */
+#if (!defined __STDC_VERSION__ || __STDC_VERSION__ < 201112 \
+     || (defined __GNUC__ && __GNUC__ < 4 + (__GNUC_MINOR__ < 9) \
+         && !defined __clang__) \
+     || (defined __clang__ && __clang_major__ < 8))
+# ifdef __cplusplus
+#  if 201103 <= __cplusplus
+#   define _Alignof(type) alignof (type)
+#  else
+   template <class __t> struct __alignof_helper { char __a; __t __b; };
+#   define _Alignof(type) offsetof (__alignof_helper<type>, __b)
+#  endif
+# else
+#  define _Alignof(type) offsetof (struct { char __a; type __b; }, __b)
+# endif
+#endif
+#if ! (defined __cplusplus && 201103 <= __cplusplus)
+# define alignof _Alignof
+#endif
+#define __alignof_is_defined 1
+
+/* alignas (A), also known as _Alignas (A), aligns a variable or type
+   to the alignment A, where A is an integer constant expression.  For
+   example:
+
+      int alignas (8) foo;
+      struct s { int a; int alignas (8) bar; };
+
+   aligns the address of FOO and the offset of BAR to be multiples of 8.
+
+   A should be a power of two that is at least the type's alignment
+   and at most the implementation's alignment limit.  This limit is
+   2**28 on typical GNUish hosts, and 2**13 on MSVC.  To be portable
+   to MSVC through at least version 10.0, A should be an integer
+   constant, as MSVC does not support expressions such as 1 << 3.
+   To be portable to Sun C 5.11, do not align auto variables to
+   anything stricter than their default alignment.
+
+   The following C11 requirements are not supported here:
+
+     - If A is zero, alignas has no effect.
+     - alignas can be used multiple times; the strictest one wins.
+     - alignas (TYPE) is equivalent to alignas (alignof (TYPE)).
+
+   */
+
+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112
+# if defined __cplusplus && 201103 <= __cplusplus
+#  define _Alignas(a) alignas (a)
+# elif (!defined __attribute__ \
+        && ((defined __APPLE__ && defined __MACH__ \
+             ? 4 < __GNUC__ + (1 <= __GNUC_MINOR__) \
+             : __GNUC__ && !defined __ibmxl__) \
+            || (4 <= __clang_major__) \
+            || (__ia64 && (61200 <= __HP_cc || 61200 <= __HP_aCC)) \
+            || __ICC || 0x590 <= __SUNPRO_C || 0x0600 <= __xlC__))
+#  define _Alignas(a) __attribute__ ((__aligned__ (a)))
+# elif 1300 <= _MSC_VER
+#  define _Alignas(a) __declspec (align (a))
+# endif
+#endif
+#if ((defined _Alignas && ! (defined __cplusplus && 201103 <= __cplusplus)) \
+     || (defined __STDC_VERSION__ && 201112 <= __STDC_VERSION__))
+# define alignas _Alignas
+#endif
+#if defined alignas || (defined __cplusplus && 201103 <= __cplusplus)
+# define __alignas_is_defined 1
+#endif
+
+#endif /* _GL_STDALIGN_H */
diff --git a/src/grep/lib/stdarg.in.h b/src/grep/lib/stdarg.in.h
new file mode 100644
index 0000000..9269da2
--- /dev/null
+++ b/src/grep/lib/stdarg.in.h
@@ -0,0 +1,35 @@
+/* Substitute for and wrapper around <stdarg.h>.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _@GUARD_PREFIX@_STDARG_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_STDARG_H@
+
+#ifndef _@GUARD_PREFIX@_STDARG_H
+#define _@GUARD_PREFIX@_STDARG_H
+
+#ifndef va_copy
+# define va_copy(a,b) ((a) = (b))
+#endif
+
+#endif /* _@GUARD_PREFIX@_STDARG_H */
+#endif /* _@GUARD_PREFIX@_STDARG_H */
diff --git a/src/grep/lib/stdbool.in.h b/src/grep/lib/stdbool.in.h
new file mode 100644
index 0000000..2a1992d
--- /dev/null
+++ b/src/grep/lib/stdbool.in.h
@@ -0,0 +1,132 @@
+/* Copyright (C) 2001-2003, 2006-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <haible@clisp.cons.org>, 2001.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_STDBOOL_H
+#define _GL_STDBOOL_H
+
+/* ISO C 99 <stdbool.h> for platforms that lack it.  */
+
+/* Usage suggestions:
+
+   Programs that use <stdbool.h> should be aware of some limitations
+   and standards compliance issues.
+
+   Standards compliance:
+
+       - <stdbool.h> must be #included before 'bool', 'false', 'true'
+         can be used.
+
+       - You cannot assume that sizeof (bool) == 1.
+
+       - Programs should not undefine the macros bool, true, and false,
+         as C99 lists that as an "obsolescent feature".
+
+   Limitations of this substitute, when used in a C89 environment:
+
+       - <stdbool.h> must be #included before the '_Bool' type can be used.
+
+       - You cannot assume that _Bool is a typedef; it might be a macro.
+
+       - Bit-fields of type 'bool' are not supported.  Portable code
+         should use 'unsigned int foo : 1;' rather than 'bool foo : 1;'.
+
+       - In C99, casts and automatic conversions to '_Bool' or 'bool' are
+         performed in such a way that every nonzero value gets converted
+         to 'true', and zero gets converted to 'false'.  This doesn't work
+         with this substitute.  With this substitute, only the values 0 and 1
+         give the expected result when converted to _Bool' or 'bool'.
+
+       - C99 allows the use of (_Bool)0.0 in constant expressions, but
+         this substitute cannot always provide this property.
+
+   Also, it is suggested that programs use 'bool' rather than '_Bool';
+   this isn't required, but 'bool' is more common.  */
+
+
+/* 7.16. Boolean type and values */
+
+/* BeOS <sys/socket.h> already #defines false 0, true 1.  We use the same
+   definitions below, but temporarily we have to #undef them.  */
+#if defined __BEOS__ && !defined __HAIKU__
+# include <OS.h> /* defines bool but not _Bool */
+# undef false
+# undef true
+#endif
+
+#ifdef __cplusplus
+# define _Bool bool
+# define bool bool
+#else
+# if defined __BEOS__ && !defined __HAIKU__
+  /* A compiler known to have 'bool'.  */
+  /* If the compiler already has both 'bool' and '_Bool', we can assume they
+     are the same types.  */
+#  if !@HAVE__BOOL@
+typedef bool _Bool;
+#  endif
+# else
+#  if !defined __GNUC__
+   /* If @HAVE__BOOL@:
+        Some HP-UX cc and AIX IBM C compiler versions have compiler bugs when
+        the built-in _Bool type is used.  See
+          https://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
+          https://lists.gnu.org/r/bug-coreutils/2005-11/msg00161.html
+          https://lists.gnu.org/r/bug-coreutils/2005-10/msg00086.html
+        Similar bugs are likely with other compilers as well; this file
+        wouldn't be used if <stdbool.h> was working.
+        So we override the _Bool type.
+      If !@HAVE__BOOL@:
+        Need to define _Bool ourselves. As 'signed char' or as an enum type?
+        Use of a typedef, with SunPRO C, leads to a stupid
+          "warning: _Bool is a keyword in ISO C99".
+        Use of an enum type, with IRIX cc, leads to a stupid
+          "warning(1185): enumerated type mixed with another type".
+        Even the existence of an enum type, without a typedef,
+          "Invalid enumerator. (badenum)" with HP-UX cc on Tru64.
+        The only benefit of the enum, debuggability, is not important
+        with these compilers.  So use 'signed char' and no enum.  */
+#   define _Bool signed char
+#  else
+   /* With this compiler, trust the _Bool type if the compiler has it.  */
+#   if !@HAVE__BOOL@
+   /* For the sake of symbolic names in gdb, define true and false as
+      enum constants, not only as macros.
+      It is tempting to write
+         typedef enum { false = 0, true = 1 } _Bool;
+      so that gdb prints values of type 'bool' symbolically.  But then
+      values of type '_Bool' might promote to 'int' or 'unsigned int'
+      (see ISO C 99 6.7.2.2.(4)); however, '_Bool' must promote to 'int'
+      (see ISO C 99 6.3.1.1.(2)).  So add a negative value to the
+      enum; this ensures that '_Bool' promotes to 'int'.  */
+typedef enum { _Bool_must_promote_to_int = -1, false = 0, true = 1 } _Bool;
+#   endif
+#  endif
+# endif
+# define bool _Bool
+#endif
+
+/* The other macros must be usable in preprocessor directives.  */
+#ifdef __cplusplus
+# define false false
+# define true true
+#else
+# define false 0
+# define true 1
+#endif
+
+#define __bool_true_false_are_defined 1
+
+#endif /* _GL_STDBOOL_H */
diff --git a/src/grep/lib/stddef.in.h b/src/grep/lib/stddef.in.h
new file mode 100644
index 0000000..42290d4
--- /dev/null
+++ b/src/grep/lib/stddef.in.h
@@ -0,0 +1,147 @@
+/* A substitute for POSIX 2008 <stddef.h>, for platforms that have issues.
+
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake.  */
+
+/*
+ * POSIX 2008 <stddef.h> for platforms that have issues.
+ * <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/stddef.h.html>
+ */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined __need_wchar_t || defined __need_size_t  \
+  || defined __need_ptrdiff_t || defined __need_NULL \
+  || defined __need_wint_t
+/* Special invocation convention inside gcc header files.  In
+   particular, gcc provides a version of <stddef.h> that blindly
+   redefines NULL even when __need_wint_t was defined, even though
+   wint_t is not normally provided by <stddef.h>.  Hence, we must
+   remember if special invocation has ever been used to obtain wint_t,
+   in which case we need to clean up NULL yet again.  */
+
+# if !(defined _@GUARD_PREFIX@_STDDEF_H && defined _GL_STDDEF_WINT_T)
+#  ifdef __need_wint_t
+#   define _GL_STDDEF_WINT_T
+#  endif
+#  @INCLUDE_NEXT@ @NEXT_STDDEF_H@
+   /* On TinyCC, make sure that the macros that indicate the special invocation
+      convention get undefined.  */
+#  undef __need_wchar_t
+#  undef __need_size_t
+#  undef __need_ptrdiff_t
+#  undef __need_NULL
+#  undef __need_wint_t
+# endif
+
+#else
+/* Normal invocation convention.  */
+
+# ifndef _@GUARD_PREFIX@_STDDEF_H
+
+/* On AIX 7.2, with xlc in 64-bit mode, <stddef.h> defines max_align_t to a
+   type with alignment 4, but 'long' has alignment 8.  */
+#  if defined _AIX && defined __LP64__
+#   if !GNULIB_defined_max_align_t
+#    ifdef _MAX_ALIGN_T
+/* /usr/include/stddef.h has already defined max_align_t.  Override it.  */
+typedef long rpl_max_align_t;
+#     define max_align_t rpl_max_align_t
+#    else
+/* Prevent /usr/include/stddef.h from defining max_align_t.  */
+typedef long max_align_t;
+#     define _MAX_ALIGN_T
+#    endif
+#    define GNULIB_defined_max_align_t 1
+#   endif
+#  endif
+
+/* The include_next requires a split double-inclusion guard.  */
+
+#  @INCLUDE_NEXT@ @NEXT_STDDEF_H@
+
+/* On NetBSD 5.0, the definition of NULL lacks proper parentheses.  */
+#  if (@REPLACE_NULL@ \
+       && (!defined _@GUARD_PREFIX@_STDDEF_H || defined _GL_STDDEF_WINT_T))
+#   undef NULL
+#   ifdef __cplusplus
+   /* ISO C++ says that the macro NULL must expand to an integer constant
+      expression, hence '((void *) 0)' is not allowed in C++.  */
+#    if __GNUG__ >= 3
+    /* GNU C++ has a __null macro that behaves like an integer ('int' or
+       'long') but has the same size as a pointer.  Use that, to avoid
+       warnings.  */
+#     define NULL __null
+#    else
+#     define NULL 0L
+#    endif
+#   else
+#    define NULL ((void *) 0)
+#   endif
+#  endif
+
+#  ifndef _@GUARD_PREFIX@_STDDEF_H
+#   define _@GUARD_PREFIX@_STDDEF_H
+
+/* Some platforms lack wchar_t.  */
+#if !@HAVE_WCHAR_T@
+# define wchar_t int
+#endif
+
+/* Some platforms lack max_align_t.  The check for _GCC_MAX_ALIGN_T is
+   a hack in case the configure-time test was done with g++ even though
+   we are currently compiling with gcc.
+   On MSVC, max_align_t is defined only in C++ mode, after <cstddef> was
+   included.  Its definition is good since it has an alignment of 8 (on x86
+   and x86_64).
+   Similarly on OS/2 kLIBC.  */
+#if (defined _MSC_VER || (defined __KLIBC__ && !defined __LIBCN__)) \
+    && defined __cplusplus
+# include <cstddef>
+#else
+# if ! (@HAVE_MAX_ALIGN_T@ || (defined _GCC_MAX_ALIGN_T && !defined __clang__))
+#  if !GNULIB_defined_max_align_t
+/* On the x86, the maximum storage alignment of double, long, etc. is 4,
+   but GCC's C11 ABI for x86 says that max_align_t has an alignment of 8,
+   and the C11 standard allows this.  Work around this problem by
+   using __alignof__ (which returns 8 for double) rather than _Alignof
+   (which returns 4), and align each union member accordingly.  */
+#   if defined __GNUC__ || (__clang_major__ >= 4)
+#    define _GL_STDDEF_ALIGNAS(type) \
+       __attribute__ ((__aligned__ (__alignof__ (type))))
+#   else
+#    define _GL_STDDEF_ALIGNAS(type) /* */
+#   endif
+typedef union
+{
+  char *__p _GL_STDDEF_ALIGNAS (char *);
+  double __d _GL_STDDEF_ALIGNAS (double);
+  long double __ld _GL_STDDEF_ALIGNAS (long double);
+  long int __i _GL_STDDEF_ALIGNAS (long int);
+} rpl_max_align_t;
+#   define max_align_t rpl_max_align_t
+#   define GNULIB_defined_max_align_t 1
+#  endif
+# endif
+#endif
+
+#  endif /* _@GUARD_PREFIX@_STDDEF_H */
+# endif /* _@GUARD_PREFIX@_STDDEF_H */
+#endif /* __need_XXX */
diff --git a/src/grep/lib/stdint.in.h b/src/grep/lib/stdint.in.h
new file mode 100644
index 0000000..85c5418
--- /dev/null
+++ b/src/grep/lib/stdint.in.h
@@ -0,0 +1,740 @@
+/* Copyright (C) 2001-2002, 2004-2021 Free Software Foundation, Inc.
+   Written by Paul Eggert, Bruno Haible, Sam Steingold, Peter Burwood.
+   This file is part of gnulib.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/*
+ * ISO C 99 <stdint.h> for platforms that lack it.
+ * <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/stdint.h.html>
+ */
+
+#ifndef _@GUARD_PREFIX@_STDINT_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* When including a system file that in turn includes <inttypes.h>,
+   use the system <inttypes.h>, not our substitute.  This avoids
+   problems with (for example) VMS, whose <sys/bitypes.h> includes
+   <inttypes.h>.  */
+#define _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H
+
+/* On Android (Bionic libc), <sys/types.h> includes this file before
+   having defined 'time_t'.  Therefore in this case avoid including
+   other system header files; just include the system's <stdint.h>.
+   Ideally we should test __BIONIC__ here, but it is only defined after
+   <sys/cdefs.h> has been included; hence test __ANDROID__ instead.  */
+#if defined __ANDROID__ && defined _GL_INCLUDING_SYS_TYPES_H
+# @INCLUDE_NEXT@ @NEXT_STDINT_H@
+#else
+
+/* Get those types that are already defined in other system include
+   files, so that we can "#define int8_t signed char" below without
+   worrying about a later system include file containing a "typedef
+   signed char int8_t;" that will get messed up by our macro.  Our
+   macros should all be consistent with the system versions, except
+   for the "fast" types and macros, which we recommend against using
+   in public interfaces due to compiler differences.  */
+
+#if @HAVE_STDINT_H@
+# if defined __sgi && ! defined __c99
+   /* Bypass IRIX's <stdint.h> if in C89 mode, since it merely annoys users
+      with "This header file is to be used only for c99 mode compilations"
+      diagnostics.  */
+#  define __STDINT_H__
+# endif
+
+  /* Some pre-C++11 <stdint.h> implementations need this.  */
+# ifdef __cplusplus
+#  ifndef __STDC_CONSTANT_MACROS
+#   define __STDC_CONSTANT_MACROS 1
+#  endif
+#  ifndef __STDC_LIMIT_MACROS
+#   define __STDC_LIMIT_MACROS 1
+#  endif
+# endif
+
+  /* Other systems may have an incomplete or buggy <stdint.h>.
+     Include it before <inttypes.h>, since any "#include <stdint.h>"
+     in <inttypes.h> would reinclude us, skipping our contents because
+     _@GUARD_PREFIX@_STDINT_H is defined.
+     The include_next requires a split double-inclusion guard.  */
+# @INCLUDE_NEXT@ @NEXT_STDINT_H@
+#endif
+
+#if ! defined _@GUARD_PREFIX@_STDINT_H && ! defined _GL_JUST_INCLUDE_SYSTEM_STDINT_H
+#define _@GUARD_PREFIX@_STDINT_H
+
+/* Get SCHAR_MIN, SCHAR_MAX, UCHAR_MAX, INT_MIN, INT_MAX,
+   LONG_MIN, LONG_MAX, ULONG_MAX, _GL_INTEGER_WIDTH.  */
+#include <limits.h>
+
+/* Override WINT_MIN and WINT_MAX if gnulib's <wchar.h> or <wctype.h> overrides
+   wint_t.  */
+#if @GNULIBHEADERS_OVERRIDE_WINT_T@
+# undef WINT_MIN
+# undef WINT_MAX
+# define WINT_MIN 0x0U
+# define WINT_MAX 0xffffffffU
+#endif
+
+#if ! @HAVE_C99_STDINT_H@
+
+/* <sys/types.h> defines some of the stdint.h types as well, on glibc,
+   IRIX 6.5, and OpenBSD 3.8 (via <machine/types.h>).
+   AIX 5.2 <sys/types.h> isn't needed and causes troubles.
+   Mac OS X 10.4.6 <sys/types.h> includes <stdint.h> (which is us), but
+   relies on the system <stdint.h> definitions, so include
+   <sys/types.h> after @NEXT_STDINT_H@.  */
+# if @HAVE_SYS_TYPES_H@ && ! defined _AIX
+#  include <sys/types.h>
+# endif
+
+# if @HAVE_INTTYPES_H@
+  /* In OpenBSD 3.8, <inttypes.h> includes <machine/types.h>, which defines
+     int{8,16,32,64}_t, uint{8,16,32,64}_t and __BIT_TYPES_DEFINED__.
+     <inttypes.h> also defines intptr_t and uintptr_t.  */
+#  include <inttypes.h>
+# elif @HAVE_SYS_INTTYPES_H@
+  /* Solaris 7 <sys/inttypes.h> has the types except the *_fast*_t types, and
+     the macros except for *_FAST*_*, INTPTR_MIN, PTRDIFF_MIN, PTRDIFF_MAX.  */
+#  include <sys/inttypes.h>
+# endif
+
+# if @HAVE_SYS_BITYPES_H@ && ! defined __BIT_TYPES_DEFINED__
+  /* Linux libc4 >= 4.6.7 and libc5 have a <sys/bitypes.h> that defines
+     int{8,16,32,64}_t and __BIT_TYPES_DEFINED__.  In libc5 >= 5.2.2 it is
+     included by <sys/types.h>.  */
+#  include <sys/bitypes.h>
+# endif
+
+# undef _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H
+
+/* Minimum and maximum values for an integer type under the usual assumption.
+   Return an unspecified value if BITS == 0, adding a check to pacify
+   picky compilers.  */
+
+/* These are separate macros, because if you try to merge these macros into
+   a single one, HP-UX cc rejects the resulting expression in constant
+   expressions.  */
+# define _STDINT_UNSIGNED_MIN(bits, zero) \
+    (zero)
+# define _STDINT_SIGNED_MIN(bits, zero) \
+    (~ _STDINT_MAX (1, bits, zero))
+
+# define _STDINT_MAX(signed, bits, zero) \
+    (((((zero) + 1) << ((bits) ? (bits) - 1 - (signed) : 0)) - 1) * 2 + 1)
+
+#if !GNULIB_defined_stdint_types
+
+/* 7.18.1.1. Exact-width integer types */
+
+/* Here we assume a standard architecture where the hardware integer
+   types have 8, 16, 32, optionally 64 bits.  */
+
+# undef int8_t
+# undef uint8_t
+typedef signed char gl_int8_t;
+typedef unsigned char gl_uint8_t;
+# define int8_t gl_int8_t
+# define uint8_t gl_uint8_t
+
+# undef int16_t
+# undef uint16_t
+typedef short int gl_int16_t;
+typedef unsigned short int gl_uint16_t;
+# define int16_t gl_int16_t
+# define uint16_t gl_uint16_t
+
+# undef int32_t
+# undef uint32_t
+typedef int gl_int32_t;
+typedef unsigned int gl_uint32_t;
+# define int32_t gl_int32_t
+# define uint32_t gl_uint32_t
+
+/* If the system defines INT64_MAX, assume int64_t works.  That way,
+   if the underlying platform defines int64_t to be a 64-bit long long
+   int, the code below won't mistakenly define it to be a 64-bit long
+   int, which would mess up C++ name mangling.  We must use #ifdef
+   rather than #if, to avoid an error with HP-UX 10.20 cc.  */
+
+# ifdef INT64_MAX
+#  define GL_INT64_T
+# else
+/* Do not undefine int64_t if gnulib is not being used with 64-bit
+   types, since otherwise it breaks platforms like Tandem/NSK.  */
+#  if LONG_MAX >> 31 >> 31 == 1
+#   undef int64_t
+typedef long int gl_int64_t;
+#   define int64_t gl_int64_t
+#   define GL_INT64_T
+#  elif defined _MSC_VER
+#   undef int64_t
+typedef __int64 gl_int64_t;
+#   define int64_t gl_int64_t
+#   define GL_INT64_T
+#  else
+#   undef int64_t
+typedef long long int gl_int64_t;
+#   define int64_t gl_int64_t
+#   define GL_INT64_T
+#  endif
+# endif
+
+# ifdef UINT64_MAX
+#  define GL_UINT64_T
+# else
+#  if ULONG_MAX >> 31 >> 31 >> 1 == 1
+#   undef uint64_t
+typedef unsigned long int gl_uint64_t;
+#   define uint64_t gl_uint64_t
+#   define GL_UINT64_T
+#  elif defined _MSC_VER
+#   undef uint64_t
+typedef unsigned __int64 gl_uint64_t;
+#   define uint64_t gl_uint64_t
+#   define GL_UINT64_T
+#  else
+#   undef uint64_t
+typedef unsigned long long int gl_uint64_t;
+#   define uint64_t gl_uint64_t
+#   define GL_UINT64_T
+#  endif
+# endif
+
+/* Avoid collision with Solaris 2.5.1 <pthread.h> etc.  */
+# define _UINT8_T
+# define _UINT32_T
+# define _UINT64_T
+
+
+/* 7.18.1.2. Minimum-width integer types */
+
+/* Here we assume a standard architecture where the hardware integer
+   types have 8, 16, 32, optionally 64 bits. Therefore the leastN_t types
+   are the same as the corresponding N_t types.  */
+
+# undef int_least8_t
+# undef uint_least8_t
+# undef int_least16_t
+# undef uint_least16_t
+# undef int_least32_t
+# undef uint_least32_t
+# undef int_least64_t
+# undef uint_least64_t
+# define int_least8_t int8_t
+# define uint_least8_t uint8_t
+# define int_least16_t int16_t
+# define uint_least16_t uint16_t
+# define int_least32_t int32_t
+# define uint_least32_t uint32_t
+# ifdef GL_INT64_T
+#  define int_least64_t int64_t
+# endif
+# ifdef GL_UINT64_T
+#  define uint_least64_t uint64_t
+# endif
+
+/* 7.18.1.3. Fastest minimum-width integer types */
+
+/* Note: Other <stdint.h> substitutes may define these types differently.
+   It is not recommended to use these types in public header files. */
+
+/* Here we assume a standard architecture where the hardware integer
+   types have 8, 16, 32, optionally 64 bits. Therefore the fastN_t types
+   are taken from the same list of types.  The following code normally
+   uses types consistent with glibc, as that lessens the chance of
+   incompatibility with older GNU hosts.  */
+
+# undef int_fast8_t
+# undef uint_fast8_t
+# undef int_fast16_t
+# undef uint_fast16_t
+# undef int_fast32_t
+# undef uint_fast32_t
+# undef int_fast64_t
+# undef uint_fast64_t
+typedef signed char gl_int_fast8_t;
+typedef unsigned char gl_uint_fast8_t;
+
+# ifdef __sun
+/* Define types compatible with SunOS 5.10, so that code compiled under
+   earlier SunOS versions works with code compiled under SunOS 5.10.  */
+typedef int gl_int_fast32_t;
+typedef unsigned int gl_uint_fast32_t;
+# else
+typedef long int gl_int_fast32_t;
+typedef unsigned long int gl_uint_fast32_t;
+# endif
+typedef gl_int_fast32_t gl_int_fast16_t;
+typedef gl_uint_fast32_t gl_uint_fast16_t;
+
+# define int_fast8_t gl_int_fast8_t
+# define uint_fast8_t gl_uint_fast8_t
+# define int_fast16_t gl_int_fast16_t
+# define uint_fast16_t gl_uint_fast16_t
+# define int_fast32_t gl_int_fast32_t
+# define uint_fast32_t gl_uint_fast32_t
+# ifdef GL_INT64_T
+#  define int_fast64_t int64_t
+# endif
+# ifdef GL_UINT64_T
+#  define uint_fast64_t uint64_t
+# endif
+
+/* 7.18.1.4. Integer types capable of holding object pointers */
+
+/* kLIBC's <stdint.h> defines _INTPTR_T_DECLARED and needs its own
+   definitions of intptr_t and uintptr_t (which use int and unsigned)
+   to avoid clashes with declarations of system functions like sbrk.
+   Similarly, MinGW WSL-5.4.1 <stdint.h> needs its own intptr_t and
+   uintptr_t to avoid conflicting declarations of system functions like
+   _findclose in <io.h>.  */
+# if !((defined __KLIBC__ && defined _INTPTR_T_DECLARED) \
+       || defined __MINGW32__)
+#  undef intptr_t
+#  undef uintptr_t
+#  ifdef _WIN64
+typedef long long int gl_intptr_t;
+typedef unsigned long long int gl_uintptr_t;
+#  else
+typedef long int gl_intptr_t;
+typedef unsigned long int gl_uintptr_t;
+#  endif
+#  define intptr_t gl_intptr_t
+#  define uintptr_t gl_uintptr_t
+# endif
+
+/* 7.18.1.5. Greatest-width integer types */
+
+/* Note: These types are compiler dependent. It may be unwise to use them in
+   public header files. */
+
+/* If the system defines INTMAX_MAX, assume that intmax_t works, and
+   similarly for UINTMAX_MAX and uintmax_t.  This avoids problems with
+   assuming one type where another is used by the system.  */
+
+# ifndef INTMAX_MAX
+#  undef INTMAX_C
+#  undef intmax_t
+#  if LONG_MAX >> 30 == 1
+typedef long long int gl_intmax_t;
+#   define intmax_t gl_intmax_t
+#  elif defined GL_INT64_T
+#   define intmax_t int64_t
+#  else
+typedef long int gl_intmax_t;
+#   define intmax_t gl_intmax_t
+#  endif
+# endif
+
+# ifndef UINTMAX_MAX
+#  undef UINTMAX_C
+#  undef uintmax_t
+#  if ULONG_MAX >> 31 == 1
+typedef unsigned long long int gl_uintmax_t;
+#   define uintmax_t gl_uintmax_t
+#  elif defined GL_UINT64_T
+#   define uintmax_t uint64_t
+#  else
+typedef unsigned long int gl_uintmax_t;
+#   define uintmax_t gl_uintmax_t
+#  endif
+# endif
+
+/* Verify that intmax_t and uintmax_t have the same size.  Too much code
+   breaks if this is not the case.  If this check fails, the reason is likely
+   to be found in the autoconf macros.  */
+typedef int _verify_intmax_size[sizeof (intmax_t) == sizeof (uintmax_t)
+                                ? 1 : -1];
+
+# define GNULIB_defined_stdint_types 1
+# endif /* !GNULIB_defined_stdint_types */
+
+/* 7.18.2. Limits of specified-width integer types */
+
+/* 7.18.2.1. Limits of exact-width integer types */
+
+/* Here we assume a standard architecture where the hardware integer
+   types have 8, 16, 32, optionally 64 bits.  */
+
+# undef INT8_MIN
+# undef INT8_MAX
+# undef UINT8_MAX
+# define INT8_MIN  (~ INT8_MAX)
+# define INT8_MAX  127
+# define UINT8_MAX  255
+
+# undef INT16_MIN
+# undef INT16_MAX
+# undef UINT16_MAX
+# define INT16_MIN  (~ INT16_MAX)
+# define INT16_MAX  32767
+# define UINT16_MAX  65535
+
+# undef INT32_MIN
+# undef INT32_MAX
+# undef UINT32_MAX
+# define INT32_MIN  (~ INT32_MAX)
+# define INT32_MAX  2147483647
+# define UINT32_MAX  4294967295U
+
+# if defined GL_INT64_T && ! defined INT64_MAX
+/* Prefer (- INTMAX_C (1) << 63) over (~ INT64_MAX) because SunPRO C 5.0
+   evaluates the latter incorrectly in preprocessor expressions.  */
+#  define INT64_MIN  (- INTMAX_C (1) << 63)
+#  define INT64_MAX  INTMAX_C (9223372036854775807)
+# endif
+
+# if defined GL_UINT64_T && ! defined UINT64_MAX
+#  define UINT64_MAX  UINTMAX_C (18446744073709551615)
+# endif
+
+/* 7.18.2.2. Limits of minimum-width integer types */
+
+/* Here we assume a standard architecture where the hardware integer
+   types have 8, 16, 32, optionally 64 bits. Therefore the leastN_t types
+   are the same as the corresponding N_t types.  */
+
+# undef INT_LEAST8_MIN
+# undef INT_LEAST8_MAX
+# undef UINT_LEAST8_MAX
+# define INT_LEAST8_MIN  INT8_MIN
+# define INT_LEAST8_MAX  INT8_MAX
+# define UINT_LEAST8_MAX  UINT8_MAX
+
+# undef INT_LEAST16_MIN
+# undef INT_LEAST16_MAX
+# undef UINT_LEAST16_MAX
+# define INT_LEAST16_MIN  INT16_MIN
+# define INT_LEAST16_MAX  INT16_MAX
+# define UINT_LEAST16_MAX  UINT16_MAX
+
+# undef INT_LEAST32_MIN
+# undef INT_LEAST32_MAX
+# undef UINT_LEAST32_MAX
+# define INT_LEAST32_MIN  INT32_MIN
+# define INT_LEAST32_MAX  INT32_MAX
+# define UINT_LEAST32_MAX  UINT32_MAX
+
+# undef INT_LEAST64_MIN
+# undef INT_LEAST64_MAX
+# ifdef GL_INT64_T
+#  define INT_LEAST64_MIN  INT64_MIN
+#  define INT_LEAST64_MAX  INT64_MAX
+# endif
+
+# undef UINT_LEAST64_MAX
+# ifdef GL_UINT64_T
+#  define UINT_LEAST64_MAX  UINT64_MAX
+# endif
+
+/* 7.18.2.3. Limits of fastest minimum-width integer types */
+
+/* Here we assume a standard architecture where the hardware integer
+   types have 8, 16, 32, optionally 64 bits. Therefore the fastN_t types
+   are taken from the same list of types.  */
+
+# undef INT_FAST8_MIN
+# undef INT_FAST8_MAX
+# undef UINT_FAST8_MAX
+# define INT_FAST8_MIN  SCHAR_MIN
+# define INT_FAST8_MAX  SCHAR_MAX
+# define UINT_FAST8_MAX  UCHAR_MAX
+
+# undef INT_FAST16_MIN
+# undef INT_FAST16_MAX
+# undef UINT_FAST16_MAX
+# define INT_FAST16_MIN  INT_FAST32_MIN
+# define INT_FAST16_MAX  INT_FAST32_MAX
+# define UINT_FAST16_MAX  UINT_FAST32_MAX
+
+# undef INT_FAST32_MIN
+# undef INT_FAST32_MAX
+# undef UINT_FAST32_MAX
+# ifdef __sun
+#  define INT_FAST32_MIN  INT_MIN
+#  define INT_FAST32_MAX  INT_MAX
+#  define UINT_FAST32_MAX  UINT_MAX
+# else
+#  define INT_FAST32_MIN  LONG_MIN
+#  define INT_FAST32_MAX  LONG_MAX
+#  define UINT_FAST32_MAX  ULONG_MAX
+# endif
+
+# undef INT_FAST64_MIN
+# undef INT_FAST64_MAX
+# ifdef GL_INT64_T
+#  define INT_FAST64_MIN  INT64_MIN
+#  define INT_FAST64_MAX  INT64_MAX
+# endif
+
+# undef UINT_FAST64_MAX
+# ifdef GL_UINT64_T
+#  define UINT_FAST64_MAX  UINT64_MAX
+# endif
+
+/* 7.18.2.4. Limits of integer types capable of holding object pointers */
+
+# undef INTPTR_MIN
+# undef INTPTR_MAX
+# undef UINTPTR_MAX
+# ifdef _WIN64
+#  define INTPTR_MIN  LLONG_MIN
+#  define INTPTR_MAX  LLONG_MAX
+#  define UINTPTR_MAX  ULLONG_MAX
+# else
+#  define INTPTR_MIN  LONG_MIN
+#  define INTPTR_MAX  LONG_MAX
+#  define UINTPTR_MAX  ULONG_MAX
+# endif
+
+/* 7.18.2.5. Limits of greatest-width integer types */
+
+# ifndef INTMAX_MAX
+#  undef INTMAX_MIN
+#  ifdef INT64_MAX
+#   define INTMAX_MIN  INT64_MIN
+#   define INTMAX_MAX  INT64_MAX
+#  else
+#   define INTMAX_MIN  INT32_MIN
+#   define INTMAX_MAX  INT32_MAX
+#  endif
+# endif
+
+# ifndef UINTMAX_MAX
+#  ifdef UINT64_MAX
+#   define UINTMAX_MAX  UINT64_MAX
+#  else
+#   define UINTMAX_MAX  UINT32_MAX
+#  endif
+# endif
+
+/* 7.18.3. Limits of other integer types */
+
+/* ptrdiff_t limits */
+# undef PTRDIFF_MIN
+# undef PTRDIFF_MAX
+# if @APPLE_UNIVERSAL_BUILD@
+#  ifdef _LP64
+#   define PTRDIFF_MIN  _STDINT_SIGNED_MIN (64, 0l)
+#   define PTRDIFF_MAX  _STDINT_MAX (1, 64, 0l)
+#  else
+#   define PTRDIFF_MIN  _STDINT_SIGNED_MIN (32, 0)
+#   define PTRDIFF_MAX  _STDINT_MAX (1, 32, 0)
+#  endif
+# else
+#  define PTRDIFF_MIN  \
+    _STDINT_SIGNED_MIN (@BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
+#  define PTRDIFF_MAX  \
+    _STDINT_MAX (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
+# endif
+
+/* sig_atomic_t limits */
+# undef SIG_ATOMIC_MIN
+# undef SIG_ATOMIC_MAX
+# if @HAVE_SIGNED_SIG_ATOMIC_T@
+#  define SIG_ATOMIC_MIN  \
+    _STDINT_SIGNED_MIN (@BITSIZEOF_SIG_ATOMIC_T@, 0@SIG_ATOMIC_T_SUFFIX@)
+# else
+#  define SIG_ATOMIC_MIN  \
+    _STDINT_UNSIGNED_MIN (@BITSIZEOF_SIG_ATOMIC_T@, 0@SIG_ATOMIC_T_SUFFIX@)
+# endif
+# define SIG_ATOMIC_MAX  \
+   _STDINT_MAX (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
+                0@SIG_ATOMIC_T_SUFFIX@)
+
+
+/* size_t limit */
+# undef SIZE_MAX
+# if @APPLE_UNIVERSAL_BUILD@
+#  ifdef _LP64
+#   define SIZE_MAX  _STDINT_MAX (0, 64, 0ul)
+#  else
+#   define SIZE_MAX  _STDINT_MAX (0, 32, 0ul)
+#  endif
+# else
+#  define SIZE_MAX  _STDINT_MAX (0, @BITSIZEOF_SIZE_T@, 0@SIZE_T_SUFFIX@)
+# endif
+
+/* wchar_t limits */
+/* Get WCHAR_MIN, WCHAR_MAX.
+   This include is not on the top, above, because on OSF/1 4.0 we have a
+   sequence of nested includes
+   <wchar.h> -> <stdio.h> -> <getopt.h> -> <stdlib.h>, and the latter includes
+   <stdint.h> and assumes its types are already defined.  */
+# if @HAVE_WCHAR_H@ && ! (defined WCHAR_MIN && defined WCHAR_MAX)
+#  define _GL_JUST_INCLUDE_SYSTEM_WCHAR_H
+#  include <wchar.h>
+#  undef _GL_JUST_INCLUDE_SYSTEM_WCHAR_H
+# endif
+# undef WCHAR_MIN
+# undef WCHAR_MAX
+# if @HAVE_SIGNED_WCHAR_T@
+#  define WCHAR_MIN  \
+    _STDINT_SIGNED_MIN (@BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
+# else
+#  define WCHAR_MIN  \
+    _STDINT_UNSIGNED_MIN (@BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
+# endif
+# define WCHAR_MAX  \
+   _STDINT_MAX (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
+
+/* wint_t limits */
+/* If gnulib's <wchar.h> or <wctype.h> overrides wint_t, @WINT_T_SUFFIX@ is not
+   accurate, therefore use the definitions from above.  */
+# if !@GNULIBHEADERS_OVERRIDE_WINT_T@
+#  undef WINT_MIN
+#  undef WINT_MAX
+#  if @HAVE_SIGNED_WINT_T@
+#   define WINT_MIN  \
+     _STDINT_SIGNED_MIN (@BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
+#  else
+#   define WINT_MIN  \
+     _STDINT_UNSIGNED_MIN (@BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
+#  endif
+#  define WINT_MAX  \
+    _STDINT_MAX (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
+# endif
+
+/* 7.18.4. Macros for integer constants */
+
+/* 7.18.4.1. Macros for minimum-width integer constants */
+/* According to ISO C 99 Technical Corrigendum 1 */
+
+/* Here we assume a standard architecture where the hardware integer
+   types have 8, 16, 32, optionally 64 bits, and int is 32 bits.  */
+
+# undef INT8_C
+# undef UINT8_C
+# define INT8_C(x) x
+# define UINT8_C(x) x
+
+# undef INT16_C
+# undef UINT16_C
+# define INT16_C(x) x
+# define UINT16_C(x) x
+
+# undef INT32_C
+# undef UINT32_C
+# define INT32_C(x) x
+# define UINT32_C(x) x ## U
+
+# undef INT64_C
+# undef UINT64_C
+# if LONG_MAX >> 31 >> 31 == 1
+#  define INT64_C(x) x##L
+# elif defined _MSC_VER
+#  define INT64_C(x) x##i64
+# else
+#  define INT64_C(x) x##LL
+# endif
+# if ULONG_MAX >> 31 >> 31 >> 1 == 1
+#  define UINT64_C(x) x##UL
+# elif defined _MSC_VER
+#  define UINT64_C(x) x##ui64
+# else
+#  define UINT64_C(x) x##ULL
+# endif
+
+/* 7.18.4.2. Macros for greatest-width integer constants */
+
+# ifndef INTMAX_C
+#  if LONG_MAX >> 30 == 1
+#   define INTMAX_C(x)   x##LL
+#  elif defined GL_INT64_T
+#   define INTMAX_C(x)   INT64_C(x)
+#  else
+#   define INTMAX_C(x)   x##L
+#  endif
+# endif
+
+# ifndef UINTMAX_C
+#  if ULONG_MAX >> 31 == 1
+#   define UINTMAX_C(x)  x##ULL
+#  elif defined GL_UINT64_T
+#   define UINTMAX_C(x)  UINT64_C(x)
+#  else
+#   define UINTMAX_C(x)  x##UL
+#  endif
+# endif
+
+#endif /* !@HAVE_C99_STDINT_H@ */
+
+/* Macros specified by ISO/IEC TS 18661-1:2014.  */
+
+#if (!defined UINTMAX_WIDTH \
+     && (defined _GNU_SOURCE || defined __STDC_WANT_IEC_60559_BFP_EXT__))
+# ifdef INT8_MAX
+#  define INT8_WIDTH _GL_INTEGER_WIDTH (INT8_MIN, INT8_MAX)
+# endif
+# ifdef UINT8_MAX
+#  define UINT8_WIDTH _GL_INTEGER_WIDTH (0, UINT8_MAX)
+# endif
+# ifdef INT16_MAX
+#  define INT16_WIDTH _GL_INTEGER_WIDTH (INT16_MIN, INT16_MAX)
+# endif
+# ifdef UINT16_MAX
+#  define UINT16_WIDTH _GL_INTEGER_WIDTH (0, UINT16_MAX)
+# endif
+# ifdef INT32_MAX
+#  define INT32_WIDTH _GL_INTEGER_WIDTH (INT32_MIN, INT32_MAX)
+# endif
+# ifdef UINT32_MAX
+#  define UINT32_WIDTH _GL_INTEGER_WIDTH (0, UINT32_MAX)
+# endif
+# ifdef INT64_MAX
+#  define INT64_WIDTH _GL_INTEGER_WIDTH (INT64_MIN, INT64_MAX)
+# endif
+# ifdef UINT64_MAX
+#  define UINT64_WIDTH _GL_INTEGER_WIDTH (0, UINT64_MAX)
+# endif
+# define INT_LEAST8_WIDTH _GL_INTEGER_WIDTH (INT_LEAST8_MIN, INT_LEAST8_MAX)
+# define UINT_LEAST8_WIDTH _GL_INTEGER_WIDTH (0, UINT_LEAST8_MAX)
+# define INT_LEAST16_WIDTH _GL_INTEGER_WIDTH (INT_LEAST16_MIN, INT_LEAST16_MAX)
+# define UINT_LEAST16_WIDTH _GL_INTEGER_WIDTH (0, UINT_LEAST16_MAX)
+# define INT_LEAST32_WIDTH _GL_INTEGER_WIDTH (INT_LEAST32_MIN, INT_LEAST32_MAX)
+# define UINT_LEAST32_WIDTH _GL_INTEGER_WIDTH (0, UINT_LEAST32_MAX)
+# define INT_LEAST64_WIDTH _GL_INTEGER_WIDTH (INT_LEAST64_MIN, INT_LEAST64_MAX)
+# define UINT_LEAST64_WIDTH _GL_INTEGER_WIDTH (0, UINT_LEAST64_MAX)
+# define INT_FAST8_WIDTH _GL_INTEGER_WIDTH (INT_FAST8_MIN, INT_FAST8_MAX)
+# define UINT_FAST8_WIDTH _GL_INTEGER_WIDTH (0, UINT_FAST8_MAX)
+# define INT_FAST16_WIDTH _GL_INTEGER_WIDTH (INT_FAST16_MIN, INT_FAST16_MAX)
+# define UINT_FAST16_WIDTH _GL_INTEGER_WIDTH (0, UINT_FAST16_MAX)
+# define INT_FAST32_WIDTH _GL_INTEGER_WIDTH (INT_FAST32_MIN, INT_FAST32_MAX)
+# define UINT_FAST32_WIDTH _GL_INTEGER_WIDTH (0, UINT_FAST32_MAX)
+# define INT_FAST64_WIDTH _GL_INTEGER_WIDTH (INT_FAST64_MIN, INT_FAST64_MAX)
+# define UINT_FAST64_WIDTH _GL_INTEGER_WIDTH (0, UINT_FAST64_MAX)
+# define INTPTR_WIDTH _GL_INTEGER_WIDTH (INTPTR_MIN, INTPTR_MAX)
+# define UINTPTR_WIDTH _GL_INTEGER_WIDTH (0, UINTPTR_MAX)
+# define INTMAX_WIDTH _GL_INTEGER_WIDTH (INTMAX_MIN, INTMAX_MAX)
+# define UINTMAX_WIDTH _GL_INTEGER_WIDTH (0, UINTMAX_MAX)
+# define PTRDIFF_WIDTH _GL_INTEGER_WIDTH (PTRDIFF_MIN, PTRDIFF_MAX)
+# define SIZE_WIDTH _GL_INTEGER_WIDTH (0, SIZE_MAX)
+# define WCHAR_WIDTH _GL_INTEGER_WIDTH (WCHAR_MIN, WCHAR_MAX)
+# ifdef WINT_MAX
+#  define WINT_WIDTH _GL_INTEGER_WIDTH (WINT_MIN, WINT_MAX)
+# endif
+# ifdef SIG_ATOMIC_MAX
+#  define SIG_ATOMIC_WIDTH _GL_INTEGER_WIDTH (SIG_ATOMIC_MIN, SIG_ATOMIC_MAX)
+# endif
+#endif /* !WINT_WIDTH && (_GNU_SOURCE || __STDC_WANT_IEC_60559_BFP_EXT__) */
+
+#endif /* _@GUARD_PREFIX@_STDINT_H */
+#endif /* !(defined __ANDROID__ && ...) */
+#endif /* !defined _@GUARD_PREFIX@_STDINT_H && !defined _GL_JUST_INCLUDE_SYSTEM_STDINT_H */
diff --git a/src/grep/lib/stdio-impl.h b/src/grep/lib/stdio-impl.h
new file mode 100644
index 0000000..3fa94b4
--- /dev/null
+++ b/src/grep/lib/stdio-impl.h
@@ -0,0 +1,212 @@
+/* Implementation details of FILE streams.
+   Copyright (C) 2007-2008, 2010-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Many stdio implementations have the same logic and therefore can share
+   the same implementation of stdio extension API, except that some fields
+   have different naming conventions, or their access requires some casts.  */
+
+/* Glibc 2.28 made _IO_UNBUFFERED and _IO_IN_BACKUP private.  For now, work
+   around this problem by defining them ourselves.  FIXME: Do not rely on glibc
+   internals.  */
+#if defined _IO_EOF_SEEN
+# if !defined _IO_UNBUFFERED
+#  define _IO_UNBUFFERED 0x2
+# endif
+# if !defined _IO_IN_BACKUP
+#  define _IO_IN_BACKUP 0x100
+# endif
+#endif
+
+/* BSD stdio derived implementations.  */
+
+#if defined __NetBSD__                         /* NetBSD */
+/* Get __NetBSD_Version__.  */
+# include <sys/param.h>
+#endif
+
+#include <errno.h>                             /* For detecting Plan9.  */
+
+#if defined __sferror || defined __DragonFly__ || defined __ANDROID__
+  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
+
+# if defined __DragonFly__          /* DragonFly */
+  /* See <https://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/lib/libc/stdio/priv_stdio.h>.  */
+#  define fp_ ((struct { struct __FILE_public pub; \
+                         struct { unsigned char *_base; int _size; } _bf; \
+                         void *cookie; \
+                         void *_close; \
+                         void *_read; \
+                         void *_seek; \
+                         void *_write; \
+                         struct { unsigned char *_base; int _size; } _ub; \
+                         int _ur; \
+                         unsigned char _ubuf[3]; \
+                         unsigned char _nbuf[1]; \
+                         struct { unsigned char *_base; int _size; } _lb; \
+                         int _blksize; \
+                         fpos_t _offset; \
+                         /* More fields, not relevant here.  */ \
+                       } *) fp)
+  /* See <https://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/include/stdio.h>.  */
+#  define _p pub._p
+#  define _flags pub._flags
+#  define _r pub._r
+#  define _w pub._w
+# elif defined __ANDROID__ /* Android */
+#  ifdef __LP64__
+#   define _gl_flags_file_t int
+#  else
+#   define _gl_flags_file_t short
+#  endif
+  /* Up to this commit from 2015-10-12
+     <https://android.googlesource.com/platform/bionic.git/+/f0141dfab10a4b332769d52fa76631a64741297a>
+     the innards of FILE were public, and fp_ub could be defined like for OpenBSD,
+     see <https://android.googlesource.com/platform/bionic.git/+/e78392637d5086384a5631ddfdfa8d7ec8326ee3/libc/stdio/fileext.h>
+     and <https://android.googlesource.com/platform/bionic.git/+/e78392637d5086384a5631ddfdfa8d7ec8326ee3/libc/stdio/local.h>.
+     After this commit, the innards of FILE are hidden.  */
+#  define fp_ ((struct { unsigned char *_p; \
+                         int _r; \
+                         int _w; \
+                         _gl_flags_file_t _flags; \
+                         _gl_flags_file_t _file; \
+                         struct { unsigned char *_base; size_t _size; } _bf; \
+                         int _lbfsize; \
+                         void *_cookie; \
+                         void *_close; \
+                         void *_read; \
+                         void *_seek; \
+                         void *_write; \
+                         struct { unsigned char *_base; size_t _size; } _ext; \
+                         unsigned char *_up; \
+                         int _ur; \
+                         unsigned char _ubuf[3]; \
+                         unsigned char _nbuf[1]; \
+                         struct { unsigned char *_base; size_t _size; } _lb; \
+                         int _blksize; \
+                         fpos_t _offset; \
+                         /* More fields, not relevant here.  */ \
+                       } *) fp)
+# else
+#  define fp_ fp
+# endif
+
+# if (defined __NetBSD__ && __NetBSD_Version__ >= 105270000) || defined __OpenBSD__ || defined __minix /* NetBSD >= 1.5ZA, OpenBSD, Minix 3 */
+  /* See <http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup>
+     and <https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup>
+     and <https://github.com/Stichting-MINIX-Research-Foundation/minix/blob/master/lib/libc/stdio/fileext.h> */
+  struct __sfileext
+    {
+      struct  __sbuf _ub; /* ungetc buffer */
+      /* More fields, not relevant here.  */
+    };
+#  define fp_ub ((struct __sfileext *) fp->_ext._base)->_ub
+# elif defined __ANDROID__                     /* Android */
+  struct __sfileext
+    {
+      struct { unsigned char *_base; size_t _size; } _ub; /* ungetc buffer */
+      /* More fields, not relevant here.  */
+    };
+#  define fp_ub ((struct __sfileext *) fp_->_ext._base)->_ub
+# else                                         /* FreeBSD, NetBSD <= 1.5Z, DragonFly, Mac OS X, Cygwin */
+#  define fp_ub fp_->_ub
+# endif
+
+# define HASUB(fp) (fp_ub._base != NULL)
+
+# if defined __ANDROID__ /* Android */
+  /* Needed after this commit from 2016-01-25
+     <https://android.googlesource.com/platform/bionic.git/+/e70e0e9267d069bf56a5078c99307e08a7280de7> */
+#  ifndef __SEOF
+#   define __SLBF 1
+#   define __SNBF 2
+#   define __SRD 4
+#   define __SWR 8
+#   define __SRW 0x10
+#   define __SEOF 0x20
+#   define __SERR 0x40
+#  endif
+#  ifndef __SOFF
+#   define __SOFF 0x1000
+#  endif
+# endif
+
+#endif
+
+
+/* SystemV derived implementations.  */
+
+#ifdef __TANDEM                     /* NonStop Kernel */
+# ifndef _IOERR
+/* These values were determined by the program 'stdioext-flags' at
+   <https://lists.gnu.org/r/bug-gnulib/2010-12/msg00165.html>.  */
+#  define _IOERR   0x40
+#  define _IOREAD  0x80
+#  define _IOWRT    0x4
+#  define _IORW   0x100
+# endif
+#endif
+
+#if defined _IOERR
+
+# if defined __sun && defined _LP64 /* Solaris/{SPARC,AMD64} 64-bit */
+#  define fp_ ((struct { unsigned char *_ptr; \
+                         unsigned char *_base; \
+                         unsigned char *_end; \
+                         long _cnt; \
+                         int _file; \
+                         unsigned int _flag; \
+                       } *) fp)
+# elif defined __VMS                /* OpenVMS */
+#  define fp_ ((struct _iobuf *) fp)
+# else
+#  define fp_ fp
+# endif
+
+# if defined _SCO_DS || (defined __SCO_VERSION__ || defined __sysv5__)  /* OpenServer 5, OpenServer 6, UnixWare 7 */
+#  define _cnt __cnt
+#  define _ptr __ptr
+#  define _base __base
+#  define _flag __flag
+# endif
+
+#elif defined _WIN32 && ! defined __CYGWIN__  /* newer Windows with MSVC */
+
+/* <stdio.h> does not define the innards of FILE any more.  */
+# define WINDOWS_OPAQUE_FILE
+
+struct _gl_real_FILE
+{
+  /* Note: Compared to older Windows and to mingw, it has the fields
+     _base and _cnt swapped. */
+  unsigned char *_ptr;
+  unsigned char *_base;
+  int _cnt;
+  int _flag;
+  int _file;
+  int _charbuf;
+  int _bufsiz;
+};
+# define fp_ ((struct _gl_real_FILE *) fp)
+
+/* These values were determined by a program similar to the one at
+   <https://lists.gnu.org/r/bug-gnulib/2010-12/msg00165.html>.  */
+# define _IOREAD   0x1
+# define _IOWRT    0x2
+# define _IORW     0x4
+# define _IOEOF    0x8
+# define _IOERR   0x10
+
+#endif
diff --git a/src/grep/lib/stdio.in.h b/src/grep/lib/stdio.in.h
new file mode 100644
index 0000000..f1bf817
--- /dev/null
+++ b/src/grep/lib/stdio.in.h
@@ -0,0 +1,1699 @@
+/* A GNU-like <stdio.h>.
+
+   Copyright (C) 2004, 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined __need_FILE || defined __need___FILE || defined _GL_ALREADY_INCLUDING_STDIO_H
+/* Special invocation convention:
+   - Inside glibc header files.
+   - On OSF/1 5.1 we have a sequence of nested includes
+     <stdio.h> -> <getopt.h> -> <ctype.h> -> <sys/localedef.h> ->
+     <sys/lc_core.h> -> <nl_types.h> -> <mesg.h> -> <stdio.h>.
+     In this situation, the functions are not yet declared, therefore we cannot
+     provide the C++ aliases.  */
+
+#@INCLUDE_NEXT@ @NEXT_STDIO_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_STDIO_H
+
+#define _GL_ALREADY_INCLUDING_STDIO_H
+
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_STDIO_H@
+
+#undef _GL_ALREADY_INCLUDING_STDIO_H
+
+#ifndef _@GUARD_PREFIX@_STDIO_H
+#define _@GUARD_PREFIX@_STDIO_H
+
+/* Get va_list.  Needed on many systems, including glibc 2.8.  */
+#include <stdarg.h>
+
+#include <stddef.h>
+
+/* Get off_t and ssize_t.  Needed on many systems, including glibc 2.8
+   and eglibc 2.11.2.
+   May also define off_t to a 64-bit type on native Windows.  */
+#include <sys/types.h>
+
+/* The __attribute__ feature is available in gcc versions 2.5 and later.
+   The __-protected variants of the attributes 'format' and 'printf' are
+   accepted by gcc versions 2.6.4 (effectively 2.7) and later.
+   We enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because
+   gnulib and libintl do '#define printf __printf__' when they override
+   the 'printf' function.  */
+#ifndef _GL_ATTRIBUTE_FORMAT
+# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7) || defined __clang__
+#  define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+# else
+#  define _GL_ATTRIBUTE_FORMAT(spec) /* empty */
+# endif
+#endif
+
+/* An __attribute__ __format__ specifier for a function that takes a format
+   string and arguments, where the format string directives are the ones
+   standardized by ISO C99 and POSIX.
+   _GL_ATTRIBUTE_SPEC_PRINTF_STANDARD  */
+/* __gnu_printf__ is supported in GCC >= 4.4.  */
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
+# define _GL_ATTRIBUTE_SPEC_PRINTF_STANDARD __gnu_printf__
+#else
+# define _GL_ATTRIBUTE_SPEC_PRINTF_STANDARD __printf__
+#endif
+
+/* An __attribute__ __format__ specifier for a function that takes a format
+   string and arguments, where the format string directives are the ones of the
+   system printf(), rather than the ones standardized by ISO C99 and POSIX.
+   _GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM  */
+/* On mingw, Gnulib sets __USE_MINGW_ANSI_STDIO in order to get closer to
+   the standards.  The macro GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU indicates
+   whether this change is effective.  On older mingw, it is not.  */
+#if GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU
+# define _GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM _GL_ATTRIBUTE_SPEC_PRINTF_STANDARD
+#else
+# define _GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM __printf__
+#endif
+
+/* _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD
+   indicates to GCC that the function takes a format string and arguments,
+   where the format string directives are the ones standardized by ISO C99
+   and POSIX.  */
+#define _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD(formatstring_parameter, first_argument) \
+  _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, formatstring_parameter, first_argument))
+
+/* _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM is like _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD,
+   except that it indicates to GCC that the supported format string directives
+   are the ones of the system printf(), rather than the ones standardized by
+   ISO C99 and POSIX.  */
+#define _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM(formatstring_parameter, first_argument) \
+  _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM, formatstring_parameter, first_argument))
+
+/* _GL_ATTRIBUTE_FORMAT_SCANF
+   indicates to GCC that the function takes a format string and arguments,
+   where the format string directives are the ones standardized by ISO C99
+   and POSIX.  */
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
+# define _GL_ATTRIBUTE_FORMAT_SCANF(formatstring_parameter, first_argument) \
+   _GL_ATTRIBUTE_FORMAT ((__gnu_scanf__, formatstring_parameter, first_argument))
+#else
+# define _GL_ATTRIBUTE_FORMAT_SCANF(formatstring_parameter, first_argument) \
+   _GL_ATTRIBUTE_FORMAT ((__scanf__, formatstring_parameter, first_argument))
+#endif
+
+/* _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM is like _GL_ATTRIBUTE_FORMAT_SCANF,
+   except that it indicates to GCC that the supported format string directives
+   are the ones of the system scanf(), rather than the ones standardized by
+   ISO C99 and POSIX.  */
+#define _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM(formatstring_parameter, first_argument) \
+  _GL_ATTRIBUTE_FORMAT ((__scanf__, formatstring_parameter, first_argument))
+
+/* Solaris 10 and NetBSD 7.0 declare renameat in <unistd.h>, not in <stdio.h>.  */
+/* But in any case avoid namespace pollution on glibc systems.  */
+#if (@GNULIB_RENAMEAT@ || defined GNULIB_POSIXCHECK) && (defined __sun || defined __NetBSD__) \
+    && ! defined __GLIBC__
+# include <unistd.h>
+#endif
+
+/* Android 4.3 declares renameat in <sys/stat.h>, not in <stdio.h>.  */
+/* But in any case avoid namespace pollution on glibc systems.  */
+#if (@GNULIB_RENAMEAT@ || defined GNULIB_POSIXCHECK) && defined __ANDROID__ \
+    && ! defined __GLIBC__
+# include <sys/stat.h>
+#endif
+
+/* MSVC declares 'perror' in <stdlib.h>, not in <stdio.h>.  We must include
+   it before we  #define perror rpl_perror.  */
+/* But in any case avoid namespace pollution on glibc systems.  */
+#if (@GNULIB_PERROR@ || defined GNULIB_POSIXCHECK) \
+    && (defined _WIN32 && ! defined __CYGWIN__) \
+    && ! defined __GLIBC__
+# include <stdlib.h>
+#endif
+
+/* MSVC declares 'remove' in <io.h>, not in <stdio.h>.  We must include
+   it before we  #define remove rpl_remove.  */
+/* MSVC declares 'rename' in <io.h>, not in <stdio.h>.  We must include
+   it before we  #define rename rpl_rename.  */
+/* But in any case avoid namespace pollution on glibc systems.  */
+#if (@GNULIB_REMOVE@ || @GNULIB_RENAME@ || defined GNULIB_POSIXCHECK) \
+    && (defined _WIN32 && ! defined __CYGWIN__) \
+    && ! defined __GLIBC__
+# include <io.h>
+#endif
+
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+/* Macros for stringification.  */
+#define _GL_STDIO_STRINGIZE(token) #token
+#define _GL_STDIO_MACROEXPAND_AND_STRINGIZE(token) _GL_STDIO_STRINGIZE(token)
+
+/* When also using extern inline, suppress the use of static inline in
+   standard headers of problematic Apple configurations, as Libc at
+   least through Libc-825.26 (2013-04-09) mishandles it; see, e.g.,
+   <https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html>.
+   Perhaps Apple will fix this some day.  */
+#if (defined _GL_EXTERN_INLINE_IN_USE && defined __APPLE__ \
+     && defined __GNUC__ && defined __STDC__)
+# undef putc_unlocked
+#endif
+
+#if @GNULIB_DPRINTF@
+# if @REPLACE_DPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define dprintf rpl_dprintf
+#  endif
+_GL_FUNCDECL_RPL (dprintf, int, (int fd, const char *restrict format, ...)
+                                _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 3)
+                                _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (dprintf, int, (int fd, const char *restrict format, ...));
+# else
+#  if !@HAVE_DPRINTF@
+_GL_FUNCDECL_SYS (dprintf, int, (int fd, const char *restrict format, ...)
+                                _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 3)
+                                _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (dprintf, int, (int fd, const char *restrict format, ...));
+# endif
+_GL_CXXALIASWARN (dprintf);
+#elif defined GNULIB_POSIXCHECK
+# undef dprintf
+# if HAVE_RAW_DECL_DPRINTF
+_GL_WARN_ON_USE (dprintf, "dprintf is unportable - "
+                 "use gnulib module dprintf for portability");
+# endif
+#endif
+
+#if @GNULIB_FCLOSE@
+/* Close STREAM and its underlying file descriptor.  */
+# if @REPLACE_FCLOSE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define fclose rpl_fclose
+#  endif
+_GL_FUNCDECL_RPL (fclose, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (fclose, int, (FILE *stream));
+# else
+_GL_CXXALIAS_SYS (fclose, int, (FILE *stream));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fclose);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef fclose
+/* Assume fclose is always declared.  */
+_GL_WARN_ON_USE (fclose, "fclose is not always POSIX compliant - "
+                 "use gnulib module fclose for portable POSIX compliance");
+#endif
+
+#if @GNULIB_MDA_FCLOSEALL@
+/* On native Windows, map 'fcloseall' to '_fcloseall', so that -loldnames is
+   not required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::fcloseall on all platforms that have
+   it.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fcloseall
+#   define fcloseall _fcloseall
+#  endif
+_GL_CXXALIAS_MDA (fcloseall, int, (void));
+# else
+#  if @HAVE_DECL_FCLOSEALL@
+#   if defined __FreeBSD__ || defined __DragonFly__
+_GL_CXXALIAS_SYS (fcloseall, void, (void));
+#   else
+_GL_CXXALIAS_SYS (fcloseall, int, (void));
+#   endif
+#  endif
+# endif
+# if (defined _WIN32 && !defined __CYGWIN__) || @HAVE_DECL_FCLOSEALL@
+_GL_CXXALIASWARN (fcloseall);
+# endif
+#endif
+
+#if @GNULIB_FDOPEN@
+# if @REPLACE_FDOPEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fdopen
+#   define fdopen rpl_fdopen
+#  endif
+_GL_FUNCDECL_RPL (fdopen, FILE *,
+                  (int fd, const char *mode)
+                  _GL_ARG_NONNULL ((2)) _GL_ATTRIBUTE_DEALLOC (fclose, 1));
+_GL_CXXALIAS_RPL (fdopen, FILE *, (int fd, const char *mode));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fdopen
+#   define fdopen _fdopen
+#  endif
+_GL_CXXALIAS_MDA (fdopen, FILE *, (int fd, const char *mode));
+# else
+#  if __GNUC__ >= 11
+/* For -Wmismatched-dealloc: Associate fdopen with fclose or rpl_fclose.  */
+_GL_FUNCDECL_SYS (fdopen, FILE *,
+                  (int fd, const char *mode)
+                  _GL_ARG_NONNULL ((2)) _GL_ATTRIBUTE_DEALLOC (fclose, 1));
+#  endif
+_GL_CXXALIAS_SYS (fdopen, FILE *, (int fd, const char *mode));
+# endif
+_GL_CXXALIASWARN (fdopen);
+#else
+# if @GNULIB_FCLOSE@ && __GNUC__ >= 11 && !defined fdopen
+/* For -Wmismatched-dealloc: Associate fdopen with fclose or rpl_fclose.  */
+_GL_FUNCDECL_SYS (fdopen, FILE *,
+                  (int fd, const char *mode)
+                  _GL_ARG_NONNULL ((2)) _GL_ATTRIBUTE_DEALLOC (fclose, 1));
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef fdopen
+/* Assume fdopen is always declared.  */
+_GL_WARN_ON_USE (fdopen, "fdopen on native Windows platforms is not POSIX compliant - "
+                 "use gnulib module fdopen for portability");
+# elif @GNULIB_MDA_FDOPEN@
+/* On native Windows, map 'fdopen' to '_fdopen', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::fdopen always.  */
+#  if defined _WIN32 && !defined __CYGWIN__
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef fdopen
+#    define fdopen _fdopen
+#   endif
+_GL_CXXALIAS_MDA (fdopen, FILE *, (int fd, const char *mode));
+#  else
+_GL_CXXALIAS_SYS (fdopen, FILE *, (int fd, const char *mode));
+#  endif
+_GL_CXXALIASWARN (fdopen);
+# endif
+#endif
+
+#if @GNULIB_FFLUSH@
+/* Flush all pending data on STREAM according to POSIX rules.  Both
+   output and seekable input streams are supported.
+   Note! LOSS OF DATA can occur if fflush is applied on an input stream
+   that is _not_seekable_ or on an update stream that is _not_seekable_
+   and in which the most recent operation was input.  Seekability can
+   be tested with lseek(fileno(fp),0,SEEK_CUR).  */
+# if @REPLACE_FFLUSH@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define fflush rpl_fflush
+#  endif
+_GL_FUNCDECL_RPL (fflush, int, (FILE *gl_stream));
+_GL_CXXALIAS_RPL (fflush, int, (FILE *gl_stream));
+# else
+_GL_CXXALIAS_SYS (fflush, int, (FILE *gl_stream));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fflush);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef fflush
+/* Assume fflush is always declared.  */
+_GL_WARN_ON_USE (fflush, "fflush is not always POSIX compliant - "
+                 "use gnulib module fflush for portable POSIX compliance");
+#endif
+
+#if @GNULIB_FGETC@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fgetc
+#   define fgetc rpl_fgetc
+#  endif
+_GL_FUNCDECL_RPL (fgetc, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (fgetc, int, (FILE *stream));
+# else
+_GL_CXXALIAS_SYS (fgetc, int, (FILE *stream));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fgetc);
+# endif
+#endif
+
+#if @GNULIB_FGETS@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fgets
+#   define fgets rpl_fgets
+#  endif
+_GL_FUNCDECL_RPL (fgets, char *,
+                  (char *restrict s, int n, FILE *restrict stream)
+                  _GL_ARG_NONNULL ((1, 3)));
+_GL_CXXALIAS_RPL (fgets, char *,
+                  (char *restrict s, int n, FILE *restrict stream));
+# else
+_GL_CXXALIAS_SYS (fgets, char *,
+                  (char *restrict s, int n, FILE *restrict stream));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fgets);
+# endif
+#endif
+
+#if @GNULIB_MDA_FILENO@
+/* On native Windows, map 'fileno' to '_fileno', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::fileno always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fileno
+#   define fileno _fileno
+#  endif
+_GL_CXXALIAS_MDA (fileno, int, (FILE *restrict stream));
+# else
+_GL_CXXALIAS_SYS (fileno, int, (FILE *restrict stream));
+# endif
+_GL_CXXALIASWARN (fileno);
+#endif
+
+#if @GNULIB_FOPEN@
+# if @REPLACE_FOPEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fopen
+#   define fopen rpl_fopen
+#  endif
+_GL_FUNCDECL_RPL (fopen, FILE *,
+                  (const char *restrict filename, const char *restrict mode)
+                  _GL_ARG_NONNULL ((1, 2)) _GL_ATTRIBUTE_DEALLOC (fclose, 1));
+_GL_CXXALIAS_RPL (fopen, FILE *,
+                  (const char *restrict filename, const char *restrict mode));
+# else
+#  if __GNUC__ >= 11
+/* For -Wmismatched-dealloc: Associate fopen with fclose or rpl_fclose.  */
+_GL_FUNCDECL_SYS (fopen, FILE *,
+                  (const char *restrict filename, const char *restrict mode)
+                  _GL_ARG_NONNULL ((1, 2)) _GL_ATTRIBUTE_DEALLOC (fclose, 1));
+#  endif
+_GL_CXXALIAS_SYS (fopen, FILE *,
+                  (const char *restrict filename, const char *restrict mode));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fopen);
+# endif
+#else
+# if @GNULIB_FCLOSE@ && __GNUC__ >= 11 && !defined fopen
+/* For -Wmismatched-dealloc: Associate fopen with fclose or rpl_fclose.  */
+_GL_FUNCDECL_SYS (fopen, FILE *,
+                  (const char *restrict filename, const char *restrict mode)
+                  _GL_ARG_NONNULL ((1, 2)) _GL_ATTRIBUTE_DEALLOC (fclose, 1));
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef fopen
+/* Assume fopen is always declared.  */
+_GL_WARN_ON_USE (fopen, "fopen on native Windows platforms is not POSIX compliant - "
+                 "use gnulib module fopen for portability");
+# endif
+#endif
+
+#if @GNULIB_FPRINTF_POSIX@ || @GNULIB_FPRINTF@
+# if (@GNULIB_FPRINTF_POSIX@ && @REPLACE_FPRINTF@) \
+     || (@GNULIB_FPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define fprintf rpl_fprintf
+#  endif
+#  define GNULIB_overrides_fprintf 1
+#  if @GNULIB_FPRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
+_GL_FUNCDECL_RPL (fprintf, int,
+                  (FILE *restrict fp, const char *restrict format, ...)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 3)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  else
+_GL_FUNCDECL_RPL (fprintf, int,
+                  (FILE *restrict fp, const char *restrict format, ...)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (2, 3)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_RPL (fprintf, int,
+                  (FILE *restrict fp, const char *restrict format, ...));
+# else
+_GL_CXXALIAS_SYS (fprintf, int,
+                  (FILE *restrict fp, const char *restrict format, ...));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fprintf);
+# endif
+#endif
+#if !@GNULIB_FPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
+# if !GNULIB_overrides_fprintf
+#  undef fprintf
+# endif
+/* Assume fprintf is always declared.  */
+_GL_WARN_ON_USE (fprintf, "fprintf is not always POSIX compliant - "
+                 "use gnulib module fprintf-posix for portable "
+                 "POSIX compliance");
+#endif
+
+#if @GNULIB_FPURGE@
+/* Discard all pending buffered I/O data on STREAM.
+   STREAM must not be wide-character oriented.
+   When discarding pending output, the file position is set back to where it
+   was before the write calls.  When discarding pending input, the file
+   position is advanced to match the end of the previously read input.
+   Return 0 if successful.  Upon error, return -1 and set errno.  */
+# if @REPLACE_FPURGE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define fpurge rpl_fpurge
+#  endif
+_GL_FUNCDECL_RPL (fpurge, int, (FILE *gl_stream) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (fpurge, int, (FILE *gl_stream));
+# else
+#  if !@HAVE_DECL_FPURGE@
+_GL_FUNCDECL_SYS (fpurge, int, (FILE *gl_stream) _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (fpurge, int, (FILE *gl_stream));
+# endif
+_GL_CXXALIASWARN (fpurge);
+#elif defined GNULIB_POSIXCHECK
+# undef fpurge
+# if HAVE_RAW_DECL_FPURGE
+_GL_WARN_ON_USE (fpurge, "fpurge is not always present - "
+                 "use gnulib module fpurge for portability");
+# endif
+#endif
+
+#if @GNULIB_FPUTC@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fputc
+#   define fputc rpl_fputc
+#  endif
+_GL_FUNCDECL_RPL (fputc, int, (int c, FILE *stream) _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (fputc, int, (int c, FILE *stream));
+# else
+_GL_CXXALIAS_SYS (fputc, int, (int c, FILE *stream));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fputc);
+# endif
+#endif
+
+#if @GNULIB_FPUTS@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fputs
+#   define fputs rpl_fputs
+#  endif
+_GL_FUNCDECL_RPL (fputs, int,
+                  (const char *restrict string, FILE *restrict stream)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (fputs, int,
+                  (const char *restrict string, FILE *restrict stream));
+# else
+_GL_CXXALIAS_SYS (fputs, int,
+                  (const char *restrict string, FILE *restrict stream));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fputs);
+# endif
+#endif
+
+#if @GNULIB_FREAD@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fread
+#   define fread rpl_fread
+#  endif
+_GL_FUNCDECL_RPL (fread, size_t,
+                  (void *restrict ptr, size_t s, size_t n,
+                   FILE *restrict stream)
+                  _GL_ARG_NONNULL ((4)));
+_GL_CXXALIAS_RPL (fread, size_t,
+                  (void *restrict ptr, size_t s, size_t n,
+                   FILE *restrict stream));
+# else
+_GL_CXXALIAS_SYS (fread, size_t,
+                  (void *restrict ptr, size_t s, size_t n,
+                   FILE *restrict stream));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fread);
+# endif
+#endif
+
+#if @GNULIB_FREOPEN@
+# if @REPLACE_FREOPEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef freopen
+#   define freopen rpl_freopen
+#  endif
+_GL_FUNCDECL_RPL (freopen, FILE *,
+                  (const char *restrict filename, const char *restrict mode,
+                   FILE *restrict stream)
+                  _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_RPL (freopen, FILE *,
+                  (const char *restrict filename, const char *restrict mode,
+                   FILE *restrict stream));
+# else
+_GL_CXXALIAS_SYS (freopen, FILE *,
+                  (const char *restrict filename, const char *restrict mode,
+                   FILE *restrict stream));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (freopen);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef freopen
+/* Assume freopen is always declared.  */
+_GL_WARN_ON_USE (freopen,
+                 "freopen on native Windows platforms is not POSIX compliant - "
+                 "use gnulib module freopen for portability");
+#endif
+
+#if @GNULIB_FSCANF@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fscanf
+#   define fscanf rpl_fscanf
+#  endif
+_GL_FUNCDECL_RPL (fscanf, int,
+                  (FILE *restrict stream, const char *restrict format, ...)
+                  _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (2, 3)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (fscanf, int,
+                  (FILE *restrict stream, const char *restrict format, ...));
+# else
+_GL_CXXALIAS_SYS (fscanf, int,
+                  (FILE *restrict stream, const char *restrict format, ...));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fscanf);
+# endif
+#endif
+
+
+/* Set up the following warnings, based on which modules are in use.
+   GNU Coding Standards discourage the use of fseek, since it imposes
+   an arbitrary limitation on some 32-bit hosts.  Remember that the
+   fseek module depends on the fseeko module, so we only have three
+   cases to consider:
+
+   1. The developer is not using either module.  Issue a warning under
+   GNULIB_POSIXCHECK for both functions, to remind them that both
+   functions have bugs on some systems.  _GL_NO_LARGE_FILES has no
+   impact on this warning.
+
+   2. The developer is using both modules.  They may be unaware of the
+   arbitrary limitations of fseek, so issue a warning under
+   GNULIB_POSIXCHECK.  On the other hand, they may be using both
+   modules intentionally, so the developer can define
+   _GL_NO_LARGE_FILES in the compilation units where the use of fseek
+   is safe, to silence the warning.
+
+   3. The developer is using the fseeko module, but not fseek.  Gnulib
+   guarantees that fseek will still work around platform bugs in that
+   case, but we presume that the developer is aware of the pitfalls of
+   fseek and was trying to avoid it, so issue a warning even when
+   GNULIB_POSIXCHECK is undefined.  Again, _GL_NO_LARGE_FILES can be
+   defined to silence the warning in particular compilation units.
+   In C++ compilations with GNULIB_NAMESPACE, in order to avoid that
+   fseek gets defined as a macro, it is recommended that the developer
+   uses the fseek module, even if he is not calling the fseek function.
+
+   Most gnulib clients that perform stream operations should fall into
+   category 3.  */
+
+#if @GNULIB_FSEEK@
+# if defined GNULIB_POSIXCHECK && !defined _GL_NO_LARGE_FILES
+#  define _GL_FSEEK_WARN /* Category 2, above.  */
+#  undef fseek
+# endif
+# if @REPLACE_FSEEK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fseek
+#   define fseek rpl_fseek
+#  endif
+_GL_FUNCDECL_RPL (fseek, int, (FILE *fp, long offset, int whence)
+                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (fseek, int, (FILE *fp, long offset, int whence));
+# else
+_GL_CXXALIAS_SYS (fseek, int, (FILE *fp, long offset, int whence));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fseek);
+# endif
+#endif
+
+#if @GNULIB_FSEEKO@
+# if !@GNULIB_FSEEK@ && !defined _GL_NO_LARGE_FILES
+#  define _GL_FSEEK_WARN /* Category 3, above.  */
+#  undef fseek
+# endif
+# if @REPLACE_FSEEKO@
+/* Provide an fseeko function that is aware of a preceding fflush(), and which
+   detects pipes.  */
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fseeko
+#   define fseeko rpl_fseeko
+#  endif
+_GL_FUNCDECL_RPL (fseeko, int, (FILE *fp, off_t offset, int whence)
+                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (fseeko, int, (FILE *fp, off_t offset, int whence));
+# else
+#  if ! @HAVE_DECL_FSEEKO@
+_GL_FUNCDECL_SYS (fseeko, int, (FILE *fp, off_t offset, int whence)
+                               _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (fseeko, int, (FILE *fp, off_t offset, int whence));
+# endif
+_GL_CXXALIASWARN (fseeko);
+#elif defined GNULIB_POSIXCHECK
+# define _GL_FSEEK_WARN /* Category 1, above.  */
+# undef fseek
+# undef fseeko
+# if HAVE_RAW_DECL_FSEEKO
+_GL_WARN_ON_USE (fseeko, "fseeko is unportable - "
+                 "use gnulib module fseeko for portability");
+# endif
+#endif
+
+#ifdef _GL_FSEEK_WARN
+# undef _GL_FSEEK_WARN
+/* Here, either fseek is undefined (but C89 guarantees that it is
+   declared), or it is defined as rpl_fseek (declared above).  */
+_GL_WARN_ON_USE (fseek, "fseek cannot handle files larger than 4 GB "
+                 "on 32-bit platforms - "
+                 "use fseeko function for handling of large files");
+#endif
+
+
+/* ftell, ftello.  See the comments on fseek/fseeko.  */
+
+#if @GNULIB_FTELL@
+# if defined GNULIB_POSIXCHECK && !defined _GL_NO_LARGE_FILES
+#  define _GL_FTELL_WARN /* Category 2, above.  */
+#  undef ftell
+# endif
+# if @REPLACE_FTELL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ftell
+#   define ftell rpl_ftell
+#  endif
+_GL_FUNCDECL_RPL (ftell, long, (FILE *fp) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (ftell, long, (FILE *fp));
+# else
+_GL_CXXALIAS_SYS (ftell, long, (FILE *fp));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (ftell);
+# endif
+#endif
+
+#if @GNULIB_FTELLO@
+# if !@GNULIB_FTELL@ && !defined _GL_NO_LARGE_FILES
+#  define _GL_FTELL_WARN /* Category 3, above.  */
+#  undef ftell
+# endif
+# if @REPLACE_FTELLO@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ftello
+#   define ftello rpl_ftello
+#  endif
+_GL_FUNCDECL_RPL (ftello, off_t, (FILE *fp) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (ftello, off_t, (FILE *fp));
+# else
+#  if ! @HAVE_DECL_FTELLO@
+_GL_FUNCDECL_SYS (ftello, off_t, (FILE *fp) _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (ftello, off_t, (FILE *fp));
+# endif
+_GL_CXXALIASWARN (ftello);
+#elif defined GNULIB_POSIXCHECK
+# define _GL_FTELL_WARN /* Category 1, above.  */
+# undef ftell
+# undef ftello
+# if HAVE_RAW_DECL_FTELLO
+_GL_WARN_ON_USE (ftello, "ftello is unportable - "
+                 "use gnulib module ftello for portability");
+# endif
+#endif
+
+#ifdef _GL_FTELL_WARN
+# undef _GL_FTELL_WARN
+/* Here, either ftell is undefined (but C89 guarantees that it is
+   declared), or it is defined as rpl_ftell (declared above).  */
+_GL_WARN_ON_USE (ftell, "ftell cannot handle files larger than 4 GB "
+                 "on 32-bit platforms - "
+                 "use ftello function for handling of large files");
+#endif
+
+
+#if @GNULIB_FWRITE@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fwrite
+#   define fwrite rpl_fwrite
+#  endif
+_GL_FUNCDECL_RPL (fwrite, size_t,
+                  (const void *restrict ptr, size_t s, size_t n,
+                   FILE *restrict stream)
+                  _GL_ARG_NONNULL ((1, 4)));
+_GL_CXXALIAS_RPL (fwrite, size_t,
+                  (const void *restrict ptr, size_t s, size_t n,
+                   FILE *restrict stream));
+# else
+_GL_CXXALIAS_SYS (fwrite, size_t,
+                  (const void *restrict ptr, size_t s, size_t n,
+                   FILE *restrict stream));
+
+/* Work around bug 11959 when fortifying glibc 2.4 through 2.15
+   <https://sourceware.org/bugzilla/show_bug.cgi?id=11959>,
+   which sometimes causes an unwanted diagnostic for fwrite calls.
+   This affects only function declaration attributes under certain
+   versions of gcc and clang, and is not needed for C++.  */
+#  if (0 < __USE_FORTIFY_LEVEL                                          \
+       && __GLIBC__ == 2 && 4 <= __GLIBC_MINOR__ && __GLIBC_MINOR__ <= 15 \
+       && 3 < __GNUC__ + (4 <= __GNUC_MINOR__)                          \
+       && !defined __cplusplus)
+#   undef fwrite
+#   undef fwrite_unlocked
+extern size_t __REDIRECT (rpl_fwrite,
+                          (const void *__restrict, size_t, size_t,
+                           FILE *__restrict),
+                          fwrite);
+extern size_t __REDIRECT (rpl_fwrite_unlocked,
+                          (const void *__restrict, size_t, size_t,
+                           FILE *__restrict),
+                          fwrite_unlocked);
+#   define fwrite rpl_fwrite
+#   define fwrite_unlocked rpl_fwrite_unlocked
+#  endif
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fwrite);
+# endif
+#endif
+
+#if @GNULIB_GETC@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getc
+#   define getc rpl_fgetc
+#  endif
+_GL_FUNCDECL_RPL (fgetc, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL_1 (getc, rpl_fgetc, int, (FILE *stream));
+# else
+_GL_CXXALIAS_SYS (getc, int, (FILE *stream));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (getc);
+# endif
+#endif
+
+#if @GNULIB_GETCHAR@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getchar
+#   define getchar rpl_getchar
+#  endif
+_GL_FUNCDECL_RPL (getchar, int, (void));
+_GL_CXXALIAS_RPL (getchar, int, (void));
+# else
+_GL_CXXALIAS_SYS (getchar, int, (void));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (getchar);
+# endif
+#endif
+
+#if @GNULIB_GETDELIM@
+/* Read input, up to (and including) the next occurrence of DELIMITER, from
+   STREAM, store it in *LINEPTR (and NUL-terminate it).
+   *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
+   bytes of space.  It is realloc'd as necessary.
+   Return the number of bytes read and stored at *LINEPTR (not including the
+   NUL terminator), or -1 on error or EOF.  */
+# if @REPLACE_GETDELIM@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getdelim
+#   define getdelim rpl_getdelim
+#  endif
+_GL_FUNCDECL_RPL (getdelim, ssize_t,
+                  (char **restrict lineptr, size_t *restrict linesize,
+                   int delimiter,
+                   FILE *restrict stream)
+                  _GL_ARG_NONNULL ((1, 2, 4)));
+_GL_CXXALIAS_RPL (getdelim, ssize_t,
+                  (char **restrict lineptr, size_t *restrict linesize,
+                   int delimiter,
+                   FILE *restrict stream));
+# else
+#  if !@HAVE_DECL_GETDELIM@
+_GL_FUNCDECL_SYS (getdelim, ssize_t,
+                  (char **restrict lineptr, size_t *restrict linesize,
+                   int delimiter,
+                   FILE *restrict stream)
+                  _GL_ARG_NONNULL ((1, 2, 4)));
+#  endif
+_GL_CXXALIAS_SYS (getdelim, ssize_t,
+                  (char **restrict lineptr, size_t *restrict linesize,
+                   int delimiter,
+                   FILE *restrict stream));
+# endif
+_GL_CXXALIASWARN (getdelim);
+#elif defined GNULIB_POSIXCHECK
+# undef getdelim
+# if HAVE_RAW_DECL_GETDELIM
+_GL_WARN_ON_USE (getdelim, "getdelim is unportable - "
+                 "use gnulib module getdelim for portability");
+# endif
+#endif
+
+#if @GNULIB_GETLINE@
+/* Read a line, up to (and including) the next newline, from STREAM, store it
+   in *LINEPTR (and NUL-terminate it).
+   *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
+   bytes of space.  It is realloc'd as necessary.
+   Return the number of bytes read and stored at *LINEPTR (not including the
+   NUL terminator), or -1 on error or EOF.  */
+# if @REPLACE_GETLINE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getline
+#   define getline rpl_getline
+#  endif
+_GL_FUNCDECL_RPL (getline, ssize_t,
+                  (char **restrict lineptr, size_t *restrict linesize,
+                   FILE *restrict stream)
+                  _GL_ARG_NONNULL ((1, 2, 3)));
+_GL_CXXALIAS_RPL (getline, ssize_t,
+                  (char **restrict lineptr, size_t *restrict linesize,
+                   FILE *restrict stream));
+# else
+#  if !@HAVE_DECL_GETLINE@
+_GL_FUNCDECL_SYS (getline, ssize_t,
+                  (char **restrict lineptr, size_t *restrict linesize,
+                   FILE *restrict stream)
+                  _GL_ARG_NONNULL ((1, 2, 3)));
+#  endif
+_GL_CXXALIAS_SYS (getline, ssize_t,
+                  (char **restrict lineptr, size_t *restrict linesize,
+                   FILE *restrict stream));
+# endif
+# if @HAVE_DECL_GETLINE@
+_GL_CXXALIASWARN (getline);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getline
+# if HAVE_RAW_DECL_GETLINE
+_GL_WARN_ON_USE (getline, "getline is unportable - "
+                 "use gnulib module getline for portability");
+# endif
+#endif
+
+/* It is very rare that the developer ever has full control of stdin,
+   so any use of gets warrants an unconditional warning; besides, C11
+   removed it.  */
+#undef gets
+#if HAVE_RAW_DECL_GETS && !defined __cplusplus
+_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
+#endif
+
+#if @GNULIB_MDA_GETW@
+/* On native Windows, map 'getw' to '_getw', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::getw always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getw
+#   define getw _getw
+#  endif
+_GL_CXXALIAS_MDA (getw, int, (FILE *restrict stream));
+# else
+_GL_CXXALIAS_SYS (getw, int, (FILE *restrict stream));
+# endif
+_GL_CXXALIASWARN (getw);
+#endif
+
+#if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@
+struct obstack;
+/* Grow an obstack with formatted output.  Return the number of
+   bytes added to OBS.  No trailing nul byte is added, and the
+   object should be closed with obstack_finish before use.  Upon
+   memory allocation error, call obstack_alloc_failed_handler.  Upon
+   other error, return -1.  */
+# if @REPLACE_OBSTACK_PRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define obstack_printf rpl_obstack_printf
+#  endif
+_GL_FUNCDECL_RPL (obstack_printf, int,
+                  (struct obstack *obs, const char *format, ...)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 3)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (obstack_printf, int,
+                  (struct obstack *obs, const char *format, ...));
+# else
+#  if !@HAVE_DECL_OBSTACK_PRINTF@
+_GL_FUNCDECL_SYS (obstack_printf, int,
+                  (struct obstack *obs, const char *format, ...)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 3)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (obstack_printf, int,
+                  (struct obstack *obs, const char *format, ...));
+# endif
+_GL_CXXALIASWARN (obstack_printf);
+# if @REPLACE_OBSTACK_PRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define obstack_vprintf rpl_obstack_vprintf
+#  endif
+_GL_FUNCDECL_RPL (obstack_vprintf, int,
+                  (struct obstack *obs, const char *format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 0)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (obstack_vprintf, int,
+                  (struct obstack *obs, const char *format, va_list args));
+# else
+#  if !@HAVE_DECL_OBSTACK_PRINTF@
+_GL_FUNCDECL_SYS (obstack_vprintf, int,
+                  (struct obstack *obs, const char *format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 0)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (obstack_vprintf, int,
+                  (struct obstack *obs, const char *format, va_list args));
+# endif
+_GL_CXXALIASWARN (obstack_vprintf);
+#endif
+
+#if @GNULIB_PCLOSE@
+# if !@HAVE_PCLOSE@
+_GL_FUNCDECL_SYS (pclose, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (pclose, int, (FILE *stream));
+_GL_CXXALIASWARN (pclose);
+#elif defined GNULIB_POSIXCHECK
+# undef pclose
+# if HAVE_RAW_DECL_PCLOSE
+_GL_WARN_ON_USE (pclose, "pclose is unportable - "
+                 "use gnulib module pclose for more portability");
+# endif
+#endif
+
+#if @GNULIB_PERROR@
+/* Print a message to standard error, describing the value of ERRNO,
+   (if STRING is not NULL and not empty) prefixed with STRING and ": ",
+   and terminated with a newline.  */
+# if @REPLACE_PERROR@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define perror rpl_perror
+#  endif
+_GL_FUNCDECL_RPL (perror, void, (const char *string));
+_GL_CXXALIAS_RPL (perror, void, (const char *string));
+# else
+_GL_CXXALIAS_SYS (perror, void, (const char *string));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (perror);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef perror
+/* Assume perror is always declared.  */
+_GL_WARN_ON_USE (perror, "perror is not always POSIX compliant - "
+                 "use gnulib module perror for portability");
+#endif
+
+#if @GNULIB_POPEN@
+# if @REPLACE_POPEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef popen
+#   define popen rpl_popen
+#  endif
+_GL_FUNCDECL_RPL (popen, FILE *,
+                  (const char *cmd, const char *mode)
+                  _GL_ARG_NONNULL ((1, 2)) _GL_ATTRIBUTE_DEALLOC (pclose, 1));
+_GL_CXXALIAS_RPL (popen, FILE *, (const char *cmd, const char *mode));
+# else
+#  if !@HAVE_POPEN@ || __GNUC__ >= 11
+_GL_FUNCDECL_SYS (popen, FILE *,
+                  (const char *cmd, const char *mode)
+                  _GL_ARG_NONNULL ((1, 2)) _GL_ATTRIBUTE_DEALLOC (pclose, 1));
+#  endif
+_GL_CXXALIAS_SYS (popen, FILE *, (const char *cmd, const char *mode));
+# endif
+_GL_CXXALIASWARN (popen);
+#else
+# if @GNULIB_PCLOSE@ && __GNUC__ >= 11 && !defined popen
+/* For -Wmismatched-dealloc: Associate popen with pclose or rpl_pclose.  */
+_GL_FUNCDECL_SYS (popen, FILE *,
+                  (const char *cmd, const char *mode)
+                  _GL_ARG_NONNULL ((1, 2)) _GL_ATTRIBUTE_DEALLOC (pclose, 1));
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef popen
+#  if HAVE_RAW_DECL_POPEN
+_GL_WARN_ON_USE (popen, "popen is buggy on some platforms - "
+                 "use gnulib module popen or pipe for more portability");
+#  endif
+# endif
+#endif
+
+#if @GNULIB_PRINTF_POSIX@ || @GNULIB_PRINTF@
+# if (@GNULIB_PRINTF_POSIX@ && @REPLACE_PRINTF@) \
+     || (@GNULIB_PRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
+#  if defined __GNUC__ || defined __clang__
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+/* Don't break __attribute__((format(printf,M,N))).  */
+#    define printf __printf__
+#   endif
+#   if @GNULIB_PRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
+_GL_FUNCDECL_RPL_1 (__printf__, int,
+                    (const char *restrict format, ...)
+                    __asm__ (@ASM_SYMBOL_PREFIX@
+                             _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_printf))
+                    _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (1, 2)
+                    _GL_ARG_NONNULL ((1)));
+#   else
+_GL_FUNCDECL_RPL_1 (__printf__, int,
+                    (const char *restrict format, ...)
+                    __asm__ (@ASM_SYMBOL_PREFIX@
+                             _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_printf))
+                    _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (1, 2)
+                    _GL_ARG_NONNULL ((1)));
+#   endif
+_GL_CXXALIAS_RPL_1 (printf, __printf__, int, (const char *format, ...));
+#  else
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    define printf rpl_printf
+#   endif
+_GL_FUNCDECL_RPL (printf, int,
+                  (const char *restrict format, ...)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (1, 2)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (printf, int, (const char *restrict format, ...));
+#  endif
+#  define GNULIB_overrides_printf 1
+# else
+_GL_CXXALIAS_SYS (printf, int, (const char *restrict format, ...));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (printf);
+# endif
+#endif
+#if !@GNULIB_PRINTF_POSIX@ && defined GNULIB_POSIXCHECK
+# if !GNULIB_overrides_printf
+#  undef printf
+# endif
+/* Assume printf is always declared.  */
+_GL_WARN_ON_USE (printf, "printf is not always POSIX compliant - "
+                 "use gnulib module printf-posix for portable "
+                 "POSIX compliance");
+#endif
+
+#if @GNULIB_PUTC@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef putc
+#   define putc rpl_fputc
+#  endif
+_GL_FUNCDECL_RPL (fputc, int, (int c, FILE *stream) _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL_1 (putc, rpl_fputc, int, (int c, FILE *stream));
+# else
+_GL_CXXALIAS_SYS (putc, int, (int c, FILE *stream));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (putc);
+# endif
+#endif
+
+#if @GNULIB_PUTCHAR@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef putchar
+#   define putchar rpl_putchar
+#  endif
+_GL_FUNCDECL_RPL (putchar, int, (int c));
+_GL_CXXALIAS_RPL (putchar, int, (int c));
+# else
+_GL_CXXALIAS_SYS (putchar, int, (int c));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (putchar);
+# endif
+#endif
+
+#if @GNULIB_PUTS@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef puts
+#   define puts rpl_puts
+#  endif
+_GL_FUNCDECL_RPL (puts, int, (const char *string) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (puts, int, (const char *string));
+# else
+_GL_CXXALIAS_SYS (puts, int, (const char *string));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (puts);
+# endif
+#endif
+
+#if @GNULIB_MDA_PUTW@
+/* On native Windows, map 'putw' to '_putw', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::putw always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef putw
+#   define putw _putw
+#  endif
+_GL_CXXALIAS_MDA (putw, int, (int w, FILE *restrict stream));
+# else
+_GL_CXXALIAS_SYS (putw, int, (int w, FILE *restrict stream));
+# endif
+_GL_CXXALIASWARN (putw);
+#endif
+
+#if @GNULIB_REMOVE@
+# if @REPLACE_REMOVE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef remove
+#   define remove rpl_remove
+#  endif
+_GL_FUNCDECL_RPL (remove, int, (const char *name) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (remove, int, (const char *name));
+# else
+_GL_CXXALIAS_SYS (remove, int, (const char *name));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (remove);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef remove
+/* Assume remove is always declared.  */
+_GL_WARN_ON_USE (remove, "remove cannot handle directories on some platforms - "
+                 "use gnulib module remove for more portability");
+#endif
+
+#if @GNULIB_RENAME@
+# if @REPLACE_RENAME@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef rename
+#   define rename rpl_rename
+#  endif
+_GL_FUNCDECL_RPL (rename, int,
+                  (const char *old_filename, const char *new_filename)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (rename, int,
+                  (const char *old_filename, const char *new_filename));
+# else
+_GL_CXXALIAS_SYS (rename, int,
+                  (const char *old_filename, const char *new_filename));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (rename);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef rename
+/* Assume rename is always declared.  */
+_GL_WARN_ON_USE (rename, "rename is buggy on some platforms - "
+                 "use gnulib module rename for more portability");
+#endif
+
+#if @GNULIB_RENAMEAT@
+# if @REPLACE_RENAMEAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef renameat
+#   define renameat rpl_renameat
+#  endif
+_GL_FUNCDECL_RPL (renameat, int,
+                  (int fd1, char const *file1, int fd2, char const *file2)
+                  _GL_ARG_NONNULL ((2, 4)));
+_GL_CXXALIAS_RPL (renameat, int,
+                  (int fd1, char const *file1, int fd2, char const *file2));
+# else
+#  if !@HAVE_RENAMEAT@
+_GL_FUNCDECL_SYS (renameat, int,
+                  (int fd1, char const *file1, int fd2, char const *file2)
+                  _GL_ARG_NONNULL ((2, 4)));
+#  endif
+_GL_CXXALIAS_SYS (renameat, int,
+                  (int fd1, char const *file1, int fd2, char const *file2));
+# endif
+_GL_CXXALIASWARN (renameat);
+#elif defined GNULIB_POSIXCHECK
+# undef renameat
+# if HAVE_RAW_DECL_RENAMEAT
+_GL_WARN_ON_USE (renameat, "renameat is not portable - "
+                 "use gnulib module renameat for portability");
+# endif
+#endif
+
+#if @GNULIB_SCANF@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if defined __GNUC__ || defined __clang__
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef scanf
+/* Don't break __attribute__((format(scanf,M,N))).  */
+#    define scanf __scanf__
+#   endif
+_GL_FUNCDECL_RPL_1 (__scanf__, int,
+                    (const char *restrict format, ...)
+                    __asm__ (@ASM_SYMBOL_PREFIX@
+                             _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_scanf))
+                    _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 2)
+                    _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL_1 (scanf, __scanf__, int, (const char *restrict format, ...));
+#  else
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef scanf
+#    define scanf rpl_scanf
+#   endif
+_GL_FUNCDECL_RPL (scanf, int, (const char *restrict format, ...)
+                              _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 2)
+                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (scanf, int, (const char *restrict format, ...));
+#  endif
+# else
+_GL_CXXALIAS_SYS (scanf, int, (const char *restrict format, ...));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (scanf);
+# endif
+#endif
+
+#if @GNULIB_SNPRINTF@
+# if @REPLACE_SNPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define snprintf rpl_snprintf
+#  endif
+#  define GNULIB_overrides_snprintf 1
+_GL_FUNCDECL_RPL (snprintf, int,
+                  (char *restrict str, size_t size,
+                   const char *restrict format, ...)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (3, 4)
+                  _GL_ARG_NONNULL ((3)));
+_GL_CXXALIAS_RPL (snprintf, int,
+                  (char *restrict str, size_t size,
+                   const char *restrict format, ...));
+# else
+#  if !@HAVE_DECL_SNPRINTF@
+_GL_FUNCDECL_SYS (snprintf, int,
+                  (char *restrict str, size_t size,
+                   const char *restrict format, ...)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (3, 4)
+                  _GL_ARG_NONNULL ((3)));
+#  endif
+_GL_CXXALIAS_SYS (snprintf, int,
+                  (char *restrict str, size_t size,
+                   const char *restrict format, ...));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (snprintf);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef snprintf
+# if HAVE_RAW_DECL_SNPRINTF
+_GL_WARN_ON_USE (snprintf, "snprintf is unportable - "
+                 "use gnulib module snprintf for portability");
+# endif
+#endif
+
+/* Some people would argue that all sprintf uses should be warned about
+   (for example, OpenBSD issues a link warning for it),
+   since it can cause security holes due to buffer overruns.
+   However, we believe that sprintf can be used safely, and is more
+   efficient than snprintf in those safe cases; and as proof of our
+   belief, we use sprintf in several gnulib modules.  So this header
+   intentionally avoids adding a warning to sprintf except when
+   GNULIB_POSIXCHECK is defined.  */
+
+#if @GNULIB_SPRINTF_POSIX@
+# if @REPLACE_SPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define sprintf rpl_sprintf
+#  endif
+#  define GNULIB_overrides_sprintf 1
+_GL_FUNCDECL_RPL (sprintf, int,
+                  (char *restrict str, const char *restrict format, ...)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 3)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (sprintf, int,
+                  (char *restrict str, const char *restrict format, ...));
+# else
+_GL_CXXALIAS_SYS (sprintf, int,
+                  (char *restrict str, const char *restrict format, ...));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (sprintf);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef sprintf
+/* Assume sprintf is always declared.  */
+_GL_WARN_ON_USE (sprintf, "sprintf is not always POSIX compliant - "
+                 "use gnulib module sprintf-posix for portable "
+                 "POSIX compliance");
+#endif
+
+#if @GNULIB_MDA_TEMPNAM@
+/* On native Windows, map 'tempnam' to '_tempnam', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::tempnam always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef tempnam
+#   define tempnam _tempnam
+#  endif
+_GL_CXXALIAS_MDA (tempnam, char *, (const char *dir, const char *prefix));
+# else
+_GL_CXXALIAS_SYS (tempnam, char *, (const char *dir, const char *prefix));
+# endif
+_GL_CXXALIASWARN (tempnam);
+#endif
+
+#if @GNULIB_TMPFILE@
+# if @REPLACE_TMPFILE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define tmpfile rpl_tmpfile
+#  endif
+_GL_FUNCDECL_RPL (tmpfile, FILE *, (void)
+                                   _GL_ATTRIBUTE_DEALLOC (fclose, 1));
+_GL_CXXALIAS_RPL (tmpfile, FILE *, (void));
+# else
+#  if __GNUC__ >= 11
+/* For -Wmismatched-dealloc: Associate tmpfile with fclose or rpl_fclose.  */
+_GL_FUNCDECL_SYS (tmpfile, FILE *, (void)
+                                   _GL_ATTRIBUTE_DEALLOC (fclose, 1));
+#  endif
+_GL_CXXALIAS_SYS (tmpfile, FILE *, (void));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (tmpfile);
+# endif
+#else
+# if @GNULIB_FCLOSE@ && __GNUC__ >= 11 && !defined tmpfile
+/* For -Wmismatched-dealloc: Associate tmpfile with fclose or rpl_fclose.  */
+_GL_FUNCDECL_SYS (tmpfile, FILE *, (void)
+                                   _GL_ATTRIBUTE_DEALLOC (fclose, 1));
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef tmpfile
+#  if HAVE_RAW_DECL_TMPFILE
+_GL_WARN_ON_USE (tmpfile, "tmpfile is not usable on mingw - "
+                 "use gnulib module tmpfile for portability");
+#  endif
+# endif
+#endif
+
+#if @GNULIB_VASPRINTF@
+/* Write formatted output to a string dynamically allocated with malloc().
+   If the memory allocation succeeds, store the address of the string in
+   *RESULT and return the number of resulting bytes, excluding the trailing
+   NUL.  Upon memory allocation error, or some other error, return -1.  */
+# if @REPLACE_VASPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define asprintf rpl_asprintf
+#  endif
+#  define GNULIB_overrides_asprintf
+_GL_FUNCDECL_RPL (asprintf, int,
+                  (char **result, const char *format, ...)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 3)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (asprintf, int,
+                  (char **result, const char *format, ...));
+# else
+#  if !@HAVE_VASPRINTF@
+_GL_FUNCDECL_SYS (asprintf, int,
+                  (char **result, const char *format, ...)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 3)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (asprintf, int,
+                  (char **result, const char *format, ...));
+# endif
+_GL_CXXALIASWARN (asprintf);
+# if @REPLACE_VASPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define vasprintf rpl_vasprintf
+#  endif
+#  define GNULIB_overrides_vasprintf 1
+_GL_FUNCDECL_RPL (vasprintf, int,
+                  (char **result, const char *format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 0)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (vasprintf, int,
+                  (char **result, const char *format, va_list args));
+# else
+#  if !@HAVE_VASPRINTF@
+_GL_FUNCDECL_SYS (vasprintf, int,
+                  (char **result, const char *format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 0)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (vasprintf, int,
+                  (char **result, const char *format, va_list args));
+# endif
+_GL_CXXALIASWARN (vasprintf);
+#endif
+
+#if @GNULIB_VDPRINTF@
+# if @REPLACE_VDPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define vdprintf rpl_vdprintf
+#  endif
+_GL_FUNCDECL_RPL (vdprintf, int,
+                  (int fd, const char *restrict format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 0)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (vdprintf, int,
+                  (int fd, const char *restrict format, va_list args));
+# else
+#  if !@HAVE_VDPRINTF@
+_GL_FUNCDECL_SYS (vdprintf, int,
+                  (int fd, const char *restrict format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 0)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+/* Need to cast, because on Solaris, the third parameter will likely be
+                                                    __va_list args.  */
+_GL_CXXALIAS_SYS_CAST (vdprintf, int,
+                       (int fd, const char *restrict format, va_list args));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (vdprintf);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef vdprintf
+# if HAVE_RAW_DECL_VDPRINTF
+_GL_WARN_ON_USE (vdprintf, "vdprintf is unportable - "
+                 "use gnulib module vdprintf for portability");
+# endif
+#endif
+
+#if @GNULIB_VFPRINTF_POSIX@ || @GNULIB_VFPRINTF@
+# if (@GNULIB_VFPRINTF_POSIX@ && @REPLACE_VFPRINTF@) \
+     || (@GNULIB_VFPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define vfprintf rpl_vfprintf
+#  endif
+#  define GNULIB_overrides_vfprintf 1
+#  if @GNULIB_VFPRINTF_POSIX@
+_GL_FUNCDECL_RPL (vfprintf, int,
+                  (FILE *restrict fp,
+                   const char *restrict format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 0)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  else
+_GL_FUNCDECL_RPL (vfprintf, int,
+                  (FILE *restrict fp,
+                   const char *restrict format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (2, 0)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_RPL (vfprintf, int,
+                  (FILE *restrict fp,
+                   const char *restrict format, va_list args));
+# else
+/* Need to cast, because on Solaris, the third parameter is
+                                                      __va_list args
+   and GCC's fixincludes did not change this to __gnuc_va_list.  */
+_GL_CXXALIAS_SYS_CAST (vfprintf, int,
+                       (FILE *restrict fp,
+                        const char *restrict format, va_list args));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (vfprintf);
+# endif
+#endif
+#if !@GNULIB_VFPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
+# if !GNULIB_overrides_vfprintf
+#  undef vfprintf
+# endif
+/* Assume vfprintf is always declared.  */
+_GL_WARN_ON_USE (vfprintf, "vfprintf is not always POSIX compliant - "
+                 "use gnulib module vfprintf-posix for portable "
+                      "POSIX compliance");
+#endif
+
+#if @GNULIB_VFSCANF@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef vfscanf
+#   define vfscanf rpl_vfscanf
+#  endif
+_GL_FUNCDECL_RPL (vfscanf, int,
+                  (FILE *restrict stream,
+                   const char *restrict format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (2, 0)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (vfscanf, int,
+                  (FILE *restrict stream,
+                   const char *restrict format, va_list args));
+# else
+_GL_CXXALIAS_SYS (vfscanf, int,
+                  (FILE *restrict stream,
+                   const char *restrict format, va_list args));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (vfscanf);
+# endif
+#endif
+
+#if @GNULIB_VPRINTF_POSIX@ || @GNULIB_VPRINTF@
+# if (@GNULIB_VPRINTF_POSIX@ && @REPLACE_VPRINTF@) \
+     || (@GNULIB_VPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define vprintf rpl_vprintf
+#  endif
+#  define GNULIB_overrides_vprintf 1
+#  if @GNULIB_VPRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
+_GL_FUNCDECL_RPL (vprintf, int, (const char *restrict format, va_list args)
+                                _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (1, 0)
+                                _GL_ARG_NONNULL ((1)));
+#  else
+_GL_FUNCDECL_RPL (vprintf, int, (const char *restrict format, va_list args)
+                                _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (1, 0)
+                                _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_RPL (vprintf, int, (const char *restrict format, va_list args));
+# else
+/* Need to cast, because on Solaris, the second parameter is
+                                                          __va_list args
+   and GCC's fixincludes did not change this to __gnuc_va_list.  */
+_GL_CXXALIAS_SYS_CAST (vprintf, int,
+                       (const char *restrict format, va_list args));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (vprintf);
+# endif
+#endif
+#if !@GNULIB_VPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
+# if !GNULIB_overrides_vprintf
+#  undef vprintf
+# endif
+/* Assume vprintf is always declared.  */
+_GL_WARN_ON_USE (vprintf, "vprintf is not always POSIX compliant - "
+                 "use gnulib module vprintf-posix for portable "
+                 "POSIX compliance");
+#endif
+
+#if @GNULIB_VSCANF@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef vscanf
+#   define vscanf rpl_vscanf
+#  endif
+_GL_FUNCDECL_RPL (vscanf, int, (const char *restrict format, va_list args)
+                               _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 0)
+                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (vscanf, int, (const char *restrict format, va_list args));
+# else
+_GL_CXXALIAS_SYS (vscanf, int, (const char *restrict format, va_list args));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (vscanf);
+# endif
+#endif
+
+#if @GNULIB_VSNPRINTF@
+# if @REPLACE_VSNPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define vsnprintf rpl_vsnprintf
+#  endif
+#  define GNULIB_overrides_vsnprintf 1
+_GL_FUNCDECL_RPL (vsnprintf, int,
+                  (char *restrict str, size_t size,
+                   const char *restrict format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (3, 0)
+                  _GL_ARG_NONNULL ((3)));
+_GL_CXXALIAS_RPL (vsnprintf, int,
+                  (char *restrict str, size_t size,
+                   const char *restrict format, va_list args));
+# else
+#  if !@HAVE_DECL_VSNPRINTF@
+_GL_FUNCDECL_SYS (vsnprintf, int,
+                  (char *restrict str, size_t size,
+                   const char *restrict format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (3, 0)
+                  _GL_ARG_NONNULL ((3)));
+#  endif
+_GL_CXXALIAS_SYS (vsnprintf, int,
+                  (char *restrict str, size_t size,
+                   const char *restrict format, va_list args));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (vsnprintf);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef vsnprintf
+# if HAVE_RAW_DECL_VSNPRINTF
+_GL_WARN_ON_USE (vsnprintf, "vsnprintf is unportable - "
+                 "use gnulib module vsnprintf for portability");
+# endif
+#endif
+
+#if @GNULIB_VSPRINTF_POSIX@
+# if @REPLACE_VSPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define vsprintf rpl_vsprintf
+#  endif
+#  define GNULIB_overrides_vsprintf 1
+_GL_FUNCDECL_RPL (vsprintf, int,
+                  (char *restrict str,
+                   const char *restrict format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 0)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (vsprintf, int,
+                  (char *restrict str,
+                   const char *restrict format, va_list args));
+# else
+/* Need to cast, because on Solaris, the third parameter is
+                                                       __va_list args
+   and GCC's fixincludes did not change this to __gnuc_va_list.  */
+_GL_CXXALIAS_SYS_CAST (vsprintf, int,
+                       (char *restrict str,
+                        const char *restrict format, va_list args));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (vsprintf);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef vsprintf
+/* Assume vsprintf is always declared.  */
+_GL_WARN_ON_USE (vsprintf, "vsprintf is not always POSIX compliant - "
+                 "use gnulib module vsprintf-posix for portable "
+                      "POSIX compliance");
+#endif
+
+#endif /* _@GUARD_PREFIX@_STDIO_H */
+#endif /* _@GUARD_PREFIX@_STDIO_H */
+#endif
diff --git a/src/grep/lib/stdlib.in.h b/src/grep/lib/stdlib.in.h
new file mode 100644
index 0000000..d86a880
--- /dev/null
+++ b/src/grep/lib/stdlib.in.h
@@ -0,0 +1,1517 @@
+/* A GNU-like <stdlib.h>.
+
+   Copyright (C) 1995, 2001-2004, 2006-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined __need_system_stdlib_h || defined __need_malloc_and_calloc
+/* Special invocation conventions inside some gnulib header files,
+   and inside some glibc header files, respectively.  */
+
+#@INCLUDE_NEXT@ @NEXT_STDLIB_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_STDLIB_H
+
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_STDLIB_H@
+
+#ifndef _@GUARD_PREFIX@_STDLIB_H
+#define _@GUARD_PREFIX@_STDLIB_H
+
+/* NetBSD 5.0 mis-defines NULL.  */
+#include <stddef.h>
+
+/* MirBSD 10 defines WEXITSTATUS in <sys/wait.h>, not in <stdlib.h>.  */
+#if @GNULIB_SYSTEM_POSIX@ && !defined WEXITSTATUS
+# include <sys/wait.h>
+#endif
+
+/* Solaris declares getloadavg() in <sys/loadavg.h>.  */
+#if (@GNULIB_GETLOADAVG@ || defined GNULIB_POSIXCHECK) && @HAVE_SYS_LOADAVG_H@
+/* OpenIndiana has a bug: <sys/time.h> must be included before
+   <sys/loadavg.h>.  */
+# include <sys/time.h>
+# include <sys/loadavg.h>
+#endif
+
+/* Native Windows platforms declare _mktemp() in <io.h>.  */
+#if defined _WIN32 && !defined __CYGWIN__
+# include <io.h>
+#endif
+
+#if @GNULIB_RANDOM_R@
+
+/* OSF/1 5.1 declares 'struct random_data' in <random.h>, which is included
+   from <stdlib.h> if _REENTRANT is defined.  Include it whenever we need
+   'struct random_data'.  */
+# if @HAVE_RANDOM_H@
+#  include <random.h>
+# endif
+
+# if !@HAVE_STRUCT_RANDOM_DATA@ || @REPLACE_RANDOM_R@ || !@HAVE_RANDOM_R@
+#  include <stdint.h>
+# endif
+
+# if !@HAVE_STRUCT_RANDOM_DATA@
+/* Define 'struct random_data'.
+   But allow multiple gnulib generated <stdlib.h> replacements to coexist.  */
+#  if !GNULIB_defined_struct_random_data
+struct random_data
+{
+  int32_t *fptr;                /* Front pointer.  */
+  int32_t *rptr;                /* Rear pointer.  */
+  int32_t *state;               /* Array of state values.  */
+  int rand_type;                /* Type of random number generator.  */
+  int rand_deg;                 /* Degree of random number generator.  */
+  int rand_sep;                 /* Distance between front and rear.  */
+  int32_t *end_ptr;             /* Pointer behind state table.  */
+};
+#   define GNULIB_defined_struct_random_data 1
+#  endif
+# endif
+#endif
+
+#if (@GNULIB_MKSTEMP@ || @GNULIB_MKSTEMPS@ || @GNULIB_MKOSTEMP@ || @GNULIB_MKOSTEMPS@ || @GNULIB_GETSUBOPT@ || defined GNULIB_POSIXCHECK) && ! defined __GLIBC__ && !(defined _WIN32 && ! defined __CYGWIN__)
+/* On Mac OS X 10.3, only <unistd.h> declares mkstemp.  */
+/* On Mac OS X 10.5, only <unistd.h> declares mkstemps.  */
+/* On Mac OS X 10.13, only <unistd.h> declares mkostemp and mkostemps.  */
+/* On Cygwin 1.7.1, only <unistd.h> declares getsubopt.  */
+/* But avoid namespace pollution on glibc systems and native Windows.  */
+# include <unistd.h>
+#endif
+
+/* The __attribute__ feature is available in gcc versions 2.5 and later.
+   The attribute __pure__ was added in gcc 2.96.  */
+#ifndef _GL_ATTRIBUTE_PURE
+# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || defined __clang__
+#  define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+# else
+#  define _GL_ATTRIBUTE_PURE /* empty */
+# endif
+#endif
+
+/* The definition of _Noreturn is copied here.  */
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
+/* Some systems do not define EXIT_*, despite otherwise supporting C89.  */
+#ifndef EXIT_SUCCESS
+# define EXIT_SUCCESS 0
+#endif
+/* Tandem/NSK and other platforms that define EXIT_FAILURE as -1 interfere
+   with proper operation of xargs.  */
+#ifndef EXIT_FAILURE
+# define EXIT_FAILURE 1
+#elif EXIT_FAILURE != 1
+# undef EXIT_FAILURE
+# define EXIT_FAILURE 1
+#endif
+
+
+#if @GNULIB__EXIT@
+/* Terminate the current process with the given return code, without running
+   the 'atexit' handlers.  */
+# if !@HAVE__EXIT@
+_GL_FUNCDECL_SYS (_Exit, _Noreturn void, (int status));
+# endif
+_GL_CXXALIAS_SYS (_Exit, void, (int status));
+_GL_CXXALIASWARN (_Exit);
+#elif defined GNULIB_POSIXCHECK
+# undef _Exit
+# if HAVE_RAW_DECL__EXIT
+_GL_WARN_ON_USE (_Exit, "_Exit is unportable - "
+                 "use gnulib module _Exit for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FREE_POSIX@
+# if @REPLACE_FREE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef free
+#   define free rpl_free
+#  endif
+_GL_FUNCDECL_RPL (free, void, (void *ptr));
+_GL_CXXALIAS_RPL (free, void, (void *ptr));
+# else
+_GL_CXXALIAS_SYS (free, void, (void *ptr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (free);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef free
+/* Assume free is always declared.  */
+_GL_WARN_ON_USE (free, "free is not future POSIX compliant everywhere - "
+                 "use gnulib module free for portability");
+#endif
+
+
+/* Allocate memory with indefinite extent and specified alignment.  */
+#if @GNULIB_ALIGNED_ALLOC@
+# if @REPLACE_ALIGNED_ALLOC@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef aligned_alloc
+#   define aligned_alloc rpl_aligned_alloc
+#  endif
+_GL_FUNCDECL_RPL (aligned_alloc, void *,
+                  (size_t alignment, size_t size)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+_GL_CXXALIAS_RPL (aligned_alloc, void *, (size_t alignment, size_t size));
+# else
+#  if @HAVE_ALIGNED_ALLOC@
+#   if __GNUC__ >= 11
+/* For -Wmismatched-dealloc: Associate aligned_alloc with free or rpl_free.  */
+_GL_FUNCDECL_SYS (aligned_alloc, void *,
+                  (size_t alignment, size_t size)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+#   endif
+_GL_CXXALIAS_SYS (aligned_alloc, void *, (size_t alignment, size_t size));
+#  endif
+# endif
+# if @HAVE_ALIGNED_ALLOC@
+_GL_CXXALIASWARN (aligned_alloc);
+# endif
+#else
+# if @GNULIB_FREE_POSIX@ && __GNUC__ >= 11 && !defined aligned_alloc
+/* For -Wmismatched-dealloc: Associate aligned_alloc with free or rpl_free.  */
+_GL_FUNCDECL_SYS (aligned_alloc, void *,
+                  (size_t alignment, size_t size)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef aligned_alloc
+#  if HAVE_RAW_DECL_ALIGNED_ALLOC
+_GL_WARN_ON_USE (aligned_alloc, "aligned_alloc is not portable - "
+                 "use gnulib module aligned_alloc for portability");
+#  endif
+# endif
+#endif
+
+#if @GNULIB_ATOLL@
+/* Parse a signed decimal integer.
+   Returns the value of the integer.  Errors are not detected.  */
+# if !@HAVE_ATOLL@
+_GL_FUNCDECL_SYS (atoll, long long, (const char *string)
+                                    _GL_ATTRIBUTE_PURE
+                                    _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (atoll, long long, (const char *string));
+_GL_CXXALIASWARN (atoll);
+#elif defined GNULIB_POSIXCHECK
+# undef atoll
+# if HAVE_RAW_DECL_ATOLL
+_GL_WARN_ON_USE (atoll, "atoll is unportable - "
+                 "use gnulib module atoll for portability");
+# endif
+#endif
+
+#if @GNULIB_CALLOC_POSIX@
+# if @REPLACE_CALLOC@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef calloc
+#   define calloc rpl_calloc
+#  endif
+_GL_FUNCDECL_RPL (calloc, void *,
+                  (size_t nmemb, size_t size)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+_GL_CXXALIAS_RPL (calloc, void *, (size_t nmemb, size_t size));
+# else
+#  if __GNUC__ >= 11
+/* For -Wmismatched-dealloc: Associate calloc with free or rpl_free.  */
+_GL_FUNCDECL_SYS (calloc, void *,
+                  (size_t nmemb, size_t size)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+#  endif
+_GL_CXXALIAS_SYS (calloc, void *, (size_t nmemb, size_t size));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (calloc);
+# endif
+#else
+# if @GNULIB_FREE_POSIX@ && __GNUC__ >= 11 && !defined calloc
+/* For -Wmismatched-dealloc: Associate calloc with free or rpl_free.  */
+_GL_FUNCDECL_SYS (calloc, void *,
+                  (size_t nmemb, size_t size)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef calloc
+/* Assume calloc is always declared.  */
+_GL_WARN_ON_USE (calloc, "calloc is not POSIX compliant everywhere - "
+                 "use gnulib module calloc-posix for portability");
+# endif
+#endif
+
+#if @GNULIB_CANONICALIZE_FILE_NAME@
+# if @REPLACE_CANONICALIZE_FILE_NAME@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define canonicalize_file_name rpl_canonicalize_file_name
+#  endif
+_GL_FUNCDECL_RPL (canonicalize_file_name, char *,
+                  (const char *name)
+                  _GL_ARG_NONNULL ((1))
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+_GL_CXXALIAS_RPL (canonicalize_file_name, char *, (const char *name));
+# else
+#  if !@HAVE_CANONICALIZE_FILE_NAME@ || __GNUC__ >= 11
+_GL_FUNCDECL_SYS (canonicalize_file_name, char *,
+                  (const char *name)
+                  _GL_ARG_NONNULL ((1))
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+#  endif
+_GL_CXXALIAS_SYS (canonicalize_file_name, char *, (const char *name));
+# endif
+# ifndef GNULIB_defined_canonicalize_file_name
+#  define GNULIB_defined_canonicalize_file_name \
+     (!@HAVE_CANONICALIZE_FILE_NAME@ || @REPLACE_CANONICALIZE_FILE_NAME@)
+# endif
+_GL_CXXALIASWARN (canonicalize_file_name);
+#else
+# if @GNULIB_FREE_POSIX@ && __GNUC__ >= 11 && !defined canonicalize_file_name
+/* For -Wmismatched-dealloc: Associate canonicalize_file_name with free or
+   rpl_free.  */
+_GL_FUNCDECL_SYS (canonicalize_file_name, char *,
+                  (const char *name)
+                  _GL_ARG_NONNULL ((1))
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef canonicalize_file_name
+#  if HAVE_RAW_DECL_CANONICALIZE_FILE_NAME
+_GL_WARN_ON_USE (canonicalize_file_name,
+                 "canonicalize_file_name is unportable - "
+                 "use gnulib module canonicalize-lgpl for portability");
+#  endif
+# endif
+#endif
+
+#if @GNULIB_MDA_ECVT@
+/* On native Windows, map 'ecvt' to '_ecvt', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::ecvt on all platforms that have
+   it.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ecvt
+#   define ecvt _ecvt
+#  endif
+_GL_CXXALIAS_MDA (ecvt, char *,
+                  (double number, int ndigits, int *decptp, int *signp));
+# else
+#  if @HAVE_DECL_ECVT@
+_GL_CXXALIAS_SYS (ecvt, char *,
+                  (double number, int ndigits, int *decptp, int *signp));
+#  endif
+# endif
+# if (defined _WIN32 && !defined __CYGWIN__) || @HAVE_DECL_ECVT@
+_GL_CXXALIASWARN (ecvt);
+# endif
+#endif
+
+#if @GNULIB_MDA_FCVT@
+/* On native Windows, map 'fcvt' to '_fcvt', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::fcvt on all platforms that have
+   it.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fcvt
+#   define fcvt _fcvt
+#  endif
+_GL_CXXALIAS_MDA (fcvt, char *,
+                  (double number, int ndigits, int *decptp, int *signp));
+# else
+#  if @HAVE_DECL_FCVT@
+_GL_CXXALIAS_SYS (fcvt, char *,
+                  (double number, int ndigits, int *decptp, int *signp));
+#  endif
+# endif
+# if (defined _WIN32 && !defined __CYGWIN__) || @HAVE_DECL_FCVT@
+_GL_CXXALIASWARN (fcvt);
+# endif
+#endif
+
+#if @GNULIB_MDA_GCVT@
+/* On native Windows, map 'gcvt' to '_gcvt', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::gcvt on all platforms that have
+   it.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef gcvt
+#   define gcvt _gcvt
+#  endif
+_GL_CXXALIAS_MDA (gcvt, char *, (double number, int ndigits, char *buf));
+# else
+#  if @HAVE_DECL_GCVT@
+_GL_CXXALIAS_SYS (gcvt, char *, (double number, int ndigits, char *buf));
+#  endif
+# endif
+# if (defined _WIN32 && !defined __CYGWIN__) || @HAVE_DECL_GCVT@
+_GL_CXXALIASWARN (gcvt);
+# endif
+#endif
+
+#if @GNULIB_GETLOADAVG@
+/* Store max(NELEM,3) load average numbers in LOADAVG[].
+   The three numbers are the load average of the last 1 minute, the last 5
+   minutes, and the last 15 minutes, respectively.
+   LOADAVG is an array of NELEM numbers.  */
+# if !@HAVE_DECL_GETLOADAVG@
+_GL_FUNCDECL_SYS (getloadavg, int, (double loadavg[], int nelem)
+                                   _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (getloadavg, int, (double loadavg[], int nelem));
+_GL_CXXALIASWARN (getloadavg);
+#elif defined GNULIB_POSIXCHECK
+# undef getloadavg
+# if HAVE_RAW_DECL_GETLOADAVG
+_GL_WARN_ON_USE (getloadavg, "getloadavg is not portable - "
+                 "use gnulib module getloadavg for portability");
+# endif
+#endif
+
+#if @GNULIB_GETSUBOPT@
+/* Assuming *OPTIONP is a comma separated list of elements of the form
+   "token" or "token=value", getsubopt parses the first of these elements.
+   If the first element refers to a "token" that is member of the given
+   NULL-terminated array of tokens:
+     - It replaces the comma with a NUL byte, updates *OPTIONP to point past
+       the first option and the comma, sets *VALUEP to the value of the
+       element (or NULL if it doesn't contain an "=" sign),
+     - It returns the index of the "token" in the given array of tokens.
+   Otherwise it returns -1, and *OPTIONP and *VALUEP are undefined.
+   For more details see the POSIX specification.
+   https://pubs.opengroup.org/onlinepubs/9699919799/functions/getsubopt.html */
+# if !@HAVE_GETSUBOPT@
+_GL_FUNCDECL_SYS (getsubopt, int,
+                  (char **optionp, char *const *tokens, char **valuep)
+                  _GL_ARG_NONNULL ((1, 2, 3)));
+# endif
+_GL_CXXALIAS_SYS (getsubopt, int,
+                  (char **optionp, char *const *tokens, char **valuep));
+_GL_CXXALIASWARN (getsubopt);
+#elif defined GNULIB_POSIXCHECK
+# undef getsubopt
+# if HAVE_RAW_DECL_GETSUBOPT
+_GL_WARN_ON_USE (getsubopt, "getsubopt is unportable - "
+                 "use gnulib module getsubopt for portability");
+# endif
+#endif
+
+#if @GNULIB_GRANTPT@
+/* Change the ownership and access permission of the slave side of the
+   pseudo-terminal whose master side is specified by FD.  */
+# if !@HAVE_GRANTPT@
+_GL_FUNCDECL_SYS (grantpt, int, (int fd));
+# endif
+_GL_CXXALIAS_SYS (grantpt, int, (int fd));
+_GL_CXXALIASWARN (grantpt);
+#elif defined GNULIB_POSIXCHECK
+# undef grantpt
+# if HAVE_RAW_DECL_GRANTPT
+_GL_WARN_ON_USE (grantpt, "grantpt is not portable - "
+                 "use gnulib module grantpt for portability");
+# endif
+#endif
+
+/* If _GL_USE_STDLIB_ALLOC is nonzero, the including module does not
+   rely on GNU or POSIX semantics for malloc and realloc (for example,
+   by never specifying a zero size), so it does not need malloc or
+   realloc to be redefined.  */
+#if @GNULIB_MALLOC_POSIX@
+# if @REPLACE_MALLOC@
+#  if !((defined __cplusplus && defined GNULIB_NAMESPACE) \
+        || _GL_USE_STDLIB_ALLOC)
+#   undef malloc
+#   define malloc rpl_malloc
+#  endif
+_GL_FUNCDECL_RPL (malloc, void *,
+                  (size_t size)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+_GL_CXXALIAS_RPL (malloc, void *, (size_t size));
+# else
+#  if __GNUC__ >= 11
+/* For -Wmismatched-dealloc: Associate malloc with free or rpl_free.  */
+_GL_FUNCDECL_SYS (malloc, void *,
+                  (size_t size)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+#  endif
+_GL_CXXALIAS_SYS (malloc, void *, (size_t size));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (malloc);
+# endif
+#else
+# if @GNULIB_FREE_POSIX@ && __GNUC__ >= 11 && !defined malloc
+/* For -Wmismatched-dealloc: Associate malloc with free or rpl_free.  */
+_GL_FUNCDECL_SYS (malloc, void *,
+                  (size_t size)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+# endif
+# if defined GNULIB_POSIXCHECK && !_GL_USE_STDLIB_ALLOC
+#  undef malloc
+/* Assume malloc is always declared.  */
+_GL_WARN_ON_USE (malloc, "malloc is not POSIX compliant everywhere - "
+                 "use gnulib module malloc-posix for portability");
+# endif
+#endif
+
+/* Convert a multibyte character to a wide character.  */
+#if @GNULIB_MBTOWC@
+# if @REPLACE_MBTOWC@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mbtowc
+#   define mbtowc rpl_mbtowc
+#  endif
+_GL_FUNCDECL_RPL (mbtowc, int,
+                  (wchar_t *restrict pwc, const char *restrict s, size_t n));
+_GL_CXXALIAS_RPL (mbtowc, int,
+                  (wchar_t *restrict pwc, const char *restrict s, size_t n));
+# else
+#  if !@HAVE_MBTOWC@
+_GL_FUNCDECL_SYS (mbtowc, int,
+                  (wchar_t *restrict pwc, const char *restrict s, size_t n));
+#  endif
+_GL_CXXALIAS_SYS (mbtowc, int,
+                  (wchar_t *restrict pwc, const char *restrict s, size_t n));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (mbtowc);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mbtowc
+# if HAVE_RAW_DECL_MBTOWC
+_GL_WARN_ON_USE (mbtowc, "mbtowc is not portable - "
+                 "use gnulib module mbtowc for portability");
+# endif
+#endif
+
+#if @GNULIB_MKDTEMP@
+/* Create a unique temporary directory from TEMPLATE.
+   The last six characters of TEMPLATE must be "XXXXXX";
+   they are replaced with a string that makes the directory name unique.
+   Returns TEMPLATE, or a null pointer if it cannot get a unique name.
+   The directory is created mode 700.  */
+# if !@HAVE_MKDTEMP@
+_GL_FUNCDECL_SYS (mkdtemp, char *, (char * /*template*/) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (mkdtemp, char *, (char * /*template*/));
+_GL_CXXALIASWARN (mkdtemp);
+#elif defined GNULIB_POSIXCHECK
+# undef mkdtemp
+# if HAVE_RAW_DECL_MKDTEMP
+_GL_WARN_ON_USE (mkdtemp, "mkdtemp is unportable - "
+                 "use gnulib module mkdtemp for portability");
+# endif
+#endif
+
+#if @GNULIB_MKOSTEMP@
+/* Create a unique temporary file from TEMPLATE.
+   The last six characters of TEMPLATE must be "XXXXXX";
+   they are replaced with a string that makes the file name unique.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   The file is then created, with the specified flags, ensuring it didn't exist
+   before.
+   The file is created read-write (mask at least 0600 & ~umask), but it may be
+   world-readable and world-writable (mask 0666 & ~umask), depending on the
+   implementation.
+   Returns the open file descriptor if successful, otherwise -1 and errno
+   set.  */
+# if !@HAVE_MKOSTEMP@
+_GL_FUNCDECL_SYS (mkostemp, int, (char * /*template*/, int /*flags*/)
+                                 _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (mkostemp, int, (char * /*template*/, int /*flags*/));
+_GL_CXXALIASWARN (mkostemp);
+#elif defined GNULIB_POSIXCHECK
+# undef mkostemp
+# if HAVE_RAW_DECL_MKOSTEMP
+_GL_WARN_ON_USE (mkostemp, "mkostemp is unportable - "
+                 "use gnulib module mkostemp for portability");
+# endif
+#endif
+
+#if @GNULIB_MKOSTEMPS@
+/* Create a unique temporary file from TEMPLATE.
+   The last six characters of TEMPLATE before a suffix of length
+   SUFFIXLEN must be "XXXXXX";
+   they are replaced with a string that makes the file name unique.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   The file is then created, with the specified flags, ensuring it didn't exist
+   before.
+   The file is created read-write (mask at least 0600 & ~umask), but it may be
+   world-readable and world-writable (mask 0666 & ~umask), depending on the
+   implementation.
+   Returns the open file descriptor if successful, otherwise -1 and errno
+   set.  */
+# if !@HAVE_MKOSTEMPS@
+_GL_FUNCDECL_SYS (mkostemps, int,
+                  (char * /*template*/, int /*suffixlen*/, int /*flags*/)
+                  _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (mkostemps, int,
+                  (char * /*template*/, int /*suffixlen*/, int /*flags*/));
+_GL_CXXALIASWARN (mkostemps);
+#elif defined GNULIB_POSIXCHECK
+# undef mkostemps
+# if HAVE_RAW_DECL_MKOSTEMPS
+_GL_WARN_ON_USE (mkostemps, "mkostemps is unportable - "
+                 "use gnulib module mkostemps for portability");
+# endif
+#endif
+
+#if @GNULIB_MKSTEMP@
+/* Create a unique temporary file from TEMPLATE.
+   The last six characters of TEMPLATE must be "XXXXXX";
+   they are replaced with a string that makes the file name unique.
+   The file is then created, ensuring it didn't exist before.
+   The file is created read-write (mask at least 0600 & ~umask), but it may be
+   world-readable and world-writable (mask 0666 & ~umask), depending on the
+   implementation.
+   Returns the open file descriptor if successful, otherwise -1 and errno
+   set.  */
+# if @REPLACE_MKSTEMP@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define mkstemp rpl_mkstemp
+#  endif
+_GL_FUNCDECL_RPL (mkstemp, int, (char * /*template*/) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (mkstemp, int, (char * /*template*/));
+# else
+#  if ! @HAVE_MKSTEMP@
+_GL_FUNCDECL_SYS (mkstemp, int, (char * /*template*/) _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (mkstemp, int, (char * /*template*/));
+# endif
+_GL_CXXALIASWARN (mkstemp);
+#elif defined GNULIB_POSIXCHECK
+# undef mkstemp
+# if HAVE_RAW_DECL_MKSTEMP
+_GL_WARN_ON_USE (mkstemp, "mkstemp is unportable - "
+                 "use gnulib module mkstemp for portability");
+# endif
+#endif
+
+#if @GNULIB_MKSTEMPS@
+/* Create a unique temporary file from TEMPLATE.
+   The last six characters of TEMPLATE prior to a suffix of length
+   SUFFIXLEN must be "XXXXXX";
+   they are replaced with a string that makes the file name unique.
+   The file is then created, ensuring it didn't exist before.
+   The file is created read-write (mask at least 0600 & ~umask), but it may be
+   world-readable and world-writable (mask 0666 & ~umask), depending on the
+   implementation.
+   Returns the open file descriptor if successful, otherwise -1 and errno
+   set.  */
+# if !@HAVE_MKSTEMPS@
+_GL_FUNCDECL_SYS (mkstemps, int, (char * /*template*/, int /*suffixlen*/)
+                                 _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (mkstemps, int, (char * /*template*/, int /*suffixlen*/));
+_GL_CXXALIASWARN (mkstemps);
+#elif defined GNULIB_POSIXCHECK
+# undef mkstemps
+# if HAVE_RAW_DECL_MKSTEMPS
+_GL_WARN_ON_USE (mkstemps, "mkstemps is unportable - "
+                 "use gnulib module mkstemps for portability");
+# endif
+#endif
+
+#if @GNULIB_MDA_MKTEMP@
+/* On native Windows, map 'mktemp' to '_mktemp', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::mktemp always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mktemp
+#   define mktemp _mktemp
+#  endif
+_GL_CXXALIAS_MDA (mktemp, char *, (char * /*template*/));
+# else
+_GL_CXXALIAS_SYS (mktemp, char *, (char * /*template*/));
+# endif
+_GL_CXXALIASWARN (mktemp);
+#endif
+
+/* Allocate memory with indefinite extent and specified alignment.  */
+#if @GNULIB_POSIX_MEMALIGN@
+# if @REPLACE_POSIX_MEMALIGN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef posix_memalign
+#   define posix_memalign rpl_posix_memalign
+#  endif
+_GL_FUNCDECL_RPL (posix_memalign, int,
+                  (void **memptr, size_t alignment, size_t size)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (posix_memalign, int,
+                  (void **memptr, size_t alignment, size_t size));
+# else
+#  if @HAVE_POSIX_MEMALIGN@
+_GL_CXXALIAS_SYS (posix_memalign, int,
+                  (void **memptr, size_t alignment, size_t size));
+#  endif
+# endif
+# if @HAVE_POSIX_MEMALIGN@
+_GL_CXXALIASWARN (posix_memalign);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef posix_memalign
+# if HAVE_RAW_DECL_POSIX_MEMALIGN
+_GL_WARN_ON_USE (posix_memalign, "posix_memalign is not portable - "
+                 "use gnulib module posix_memalign for portability");
+# endif
+#endif
+
+#if @GNULIB_POSIX_OPENPT@
+/* Return an FD open to the master side of a pseudo-terminal.  Flags should
+   include O_RDWR, and may also include O_NOCTTY.  */
+# if !@HAVE_POSIX_OPENPT@
+_GL_FUNCDECL_SYS (posix_openpt, int, (int flags));
+# endif
+_GL_CXXALIAS_SYS (posix_openpt, int, (int flags));
+_GL_CXXALIASWARN (posix_openpt);
+#elif defined GNULIB_POSIXCHECK
+# undef posix_openpt
+# if HAVE_RAW_DECL_POSIX_OPENPT
+_GL_WARN_ON_USE (posix_openpt, "posix_openpt is not portable - "
+                 "use gnulib module posix_openpt for portability");
+# endif
+#endif
+
+#if @GNULIB_PTSNAME@
+/* Return the pathname of the pseudo-terminal slave associated with
+   the master FD is open on, or NULL on errors.  */
+# if @REPLACE_PTSNAME@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ptsname
+#   define ptsname rpl_ptsname
+#  endif
+_GL_FUNCDECL_RPL (ptsname, char *, (int fd));
+_GL_CXXALIAS_RPL (ptsname, char *, (int fd));
+# else
+#  if !@HAVE_PTSNAME@
+_GL_FUNCDECL_SYS (ptsname, char *, (int fd));
+#  endif
+_GL_CXXALIAS_SYS (ptsname, char *, (int fd));
+# endif
+_GL_CXXALIASWARN (ptsname);
+#elif defined GNULIB_POSIXCHECK
+# undef ptsname
+# if HAVE_RAW_DECL_PTSNAME
+_GL_WARN_ON_USE (ptsname, "ptsname is not portable - "
+                 "use gnulib module ptsname for portability");
+# endif
+#endif
+
+#if @GNULIB_PTSNAME_R@
+/* Set the pathname of the pseudo-terminal slave associated with
+   the master FD is open on and return 0, or set errno and return
+   non-zero on errors.  */
+# if @REPLACE_PTSNAME_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ptsname_r
+#   define ptsname_r rpl_ptsname_r
+#  endif
+_GL_FUNCDECL_RPL (ptsname_r, int, (int fd, char *buf, size_t len));
+_GL_CXXALIAS_RPL (ptsname_r, int, (int fd, char *buf, size_t len));
+# else
+#  if !@HAVE_PTSNAME_R@
+_GL_FUNCDECL_SYS (ptsname_r, int, (int fd, char *buf, size_t len));
+#  endif
+_GL_CXXALIAS_SYS (ptsname_r, int, (int fd, char *buf, size_t len));
+# endif
+# ifndef GNULIB_defined_ptsname_r
+#  define GNULIB_defined_ptsname_r (!@HAVE_PTSNAME_R@ || @REPLACE_PTSNAME_R@)
+# endif
+_GL_CXXALIASWARN (ptsname_r);
+#elif defined GNULIB_POSIXCHECK
+# undef ptsname_r
+# if HAVE_RAW_DECL_PTSNAME_R
+_GL_WARN_ON_USE (ptsname_r, "ptsname_r is not portable - "
+                 "use gnulib module ptsname_r for portability");
+# endif
+#endif
+
+#if @GNULIB_PUTENV@
+# if @REPLACE_PUTENV@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef putenv
+#   define putenv rpl_putenv
+#  endif
+_GL_FUNCDECL_RPL (putenv, int, (char *string) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (putenv, int, (char *string));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef putenv
+#   define putenv _putenv
+#  endif
+_GL_CXXALIAS_MDA (putenv, int, (char *string));
+# else
+_GL_CXXALIAS_SYS (putenv, int, (char *string));
+# endif
+_GL_CXXALIASWARN (putenv);
+#elif @GNULIB_MDA_PUTENV@
+/* On native Windows, map 'putenv' to '_putenv', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::putenv always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef putenv
+#   define putenv _putenv
+#  endif
+/* Need to cast, because on mingw, the parameter is either
+   'const char *string' or 'char *string'.  */
+_GL_CXXALIAS_MDA_CAST (putenv, int, (char *string));
+# else
+_GL_CXXALIAS_SYS (putenv, int, (char *string));
+# endif
+_GL_CXXALIASWARN (putenv);
+#endif
+
+#if @GNULIB_QSORT_R@
+/* Sort an array of NMEMB elements, starting at address BASE, each element
+   occupying SIZE bytes, in ascending order according to the comparison
+   function COMPARE.  */
+# if @REPLACE_QSORT_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef qsort_r
+#   define qsort_r rpl_qsort_r
+#  endif
+_GL_FUNCDECL_RPL (qsort_r, void, (void *base, size_t nmemb, size_t size,
+                                  int (*compare) (void const *, void const *,
+                                                  void *),
+                                  void *arg) _GL_ARG_NONNULL ((1, 4)));
+_GL_CXXALIAS_RPL (qsort_r, void, (void *base, size_t nmemb, size_t size,
+                                  int (*compare) (void const *, void const *,
+                                                  void *),
+                                  void *arg));
+# else
+#  if !@HAVE_QSORT_R@
+_GL_FUNCDECL_SYS (qsort_r, void, (void *base, size_t nmemb, size_t size,
+                                  int (*compare) (void const *, void const *,
+                                                  void *),
+                                  void *arg) _GL_ARG_NONNULL ((1, 4)));
+#  endif
+_GL_CXXALIAS_SYS (qsort_r, void, (void *base, size_t nmemb, size_t size,
+                                  int (*compare) (void const *, void const *,
+                                                  void *),
+                                  void *arg));
+# endif
+_GL_CXXALIASWARN (qsort_r);
+#elif defined GNULIB_POSIXCHECK
+# undef qsort_r
+# if HAVE_RAW_DECL_QSORT_R
+_GL_WARN_ON_USE (qsort_r, "qsort_r is not portable - "
+                 "use gnulib module qsort_r for portability");
+# endif
+#endif
+
+
+#if @GNULIB_RANDOM_R@
+# if !@HAVE_RANDOM_R@
+#  ifndef RAND_MAX
+#   define RAND_MAX 2147483647
+#  endif
+# endif
+#endif
+
+
+#if @GNULIB_RANDOM@
+# if @REPLACE_RANDOM@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef random
+#   define random rpl_random
+#  endif
+_GL_FUNCDECL_RPL (random, long, (void));
+_GL_CXXALIAS_RPL (random, long, (void));
+# else
+#  if !@HAVE_RANDOM@
+_GL_FUNCDECL_SYS (random, long, (void));
+#  endif
+/* Need to cast, because on Haiku, the return type is
+                               int.  */
+_GL_CXXALIAS_SYS_CAST (random, long, (void));
+# endif
+_GL_CXXALIASWARN (random);
+#elif defined GNULIB_POSIXCHECK
+# undef random
+# if HAVE_RAW_DECL_RANDOM
+_GL_WARN_ON_USE (random, "random is unportable - "
+                 "use gnulib module random for portability");
+# endif
+#endif
+
+#if @GNULIB_RANDOM@
+# if @REPLACE_RANDOM@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef srandom
+#   define srandom rpl_srandom
+#  endif
+_GL_FUNCDECL_RPL (srandom, void, (unsigned int seed));
+_GL_CXXALIAS_RPL (srandom, void, (unsigned int seed));
+# else
+#  if !@HAVE_RANDOM@
+_GL_FUNCDECL_SYS (srandom, void, (unsigned int seed));
+#  endif
+/* Need to cast, because on FreeBSD, the first parameter is
+                                       unsigned long seed.  */
+_GL_CXXALIAS_SYS_CAST (srandom, void, (unsigned int seed));
+# endif
+_GL_CXXALIASWARN (srandom);
+#elif defined GNULIB_POSIXCHECK
+# undef srandom
+# if HAVE_RAW_DECL_SRANDOM
+_GL_WARN_ON_USE (srandom, "srandom is unportable - "
+                 "use gnulib module random for portability");
+# endif
+#endif
+
+#if @GNULIB_RANDOM@
+# if @REPLACE_INITSTATE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef initstate
+#   define initstate rpl_initstate
+#  endif
+_GL_FUNCDECL_RPL (initstate, char *,
+                  (unsigned int seed, char *buf, size_t buf_size)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (initstate, char *,
+                  (unsigned int seed, char *buf, size_t buf_size));
+# else
+#  if !@HAVE_INITSTATE@ || !@HAVE_DECL_INITSTATE@
+_GL_FUNCDECL_SYS (initstate, char *,
+                  (unsigned int seed, char *buf, size_t buf_size)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+/* Need to cast, because on FreeBSD, the first parameter is
+                        unsigned long seed.  */
+_GL_CXXALIAS_SYS_CAST (initstate, char *,
+                       (unsigned int seed, char *buf, size_t buf_size));
+# endif
+_GL_CXXALIASWARN (initstate);
+#elif defined GNULIB_POSIXCHECK
+# undef initstate
+# if HAVE_RAW_DECL_INITSTATE
+_GL_WARN_ON_USE (initstate, "initstate is unportable - "
+                 "use gnulib module random for portability");
+# endif
+#endif
+
+#if @GNULIB_RANDOM@
+# if @REPLACE_SETSTATE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef setstate
+#   define setstate rpl_setstate
+#  endif
+_GL_FUNCDECL_RPL (setstate, char *, (char *arg_state) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (setstate, char *, (char *arg_state));
+# else
+#  if !@HAVE_SETSTATE@ || !@HAVE_DECL_SETSTATE@
+_GL_FUNCDECL_SYS (setstate, char *, (char *arg_state) _GL_ARG_NONNULL ((1)));
+#  endif
+/* Need to cast, because on Mac OS X 10.13, HP-UX, Solaris the first parameter
+   is                                     const char *arg_state.  */
+_GL_CXXALIAS_SYS_CAST (setstate, char *, (char *arg_state));
+# endif
+_GL_CXXALIASWARN (setstate);
+#elif defined GNULIB_POSIXCHECK
+# undef setstate
+# if HAVE_RAW_DECL_SETSTATE
+_GL_WARN_ON_USE (setstate, "setstate is unportable - "
+                 "use gnulib module random for portability");
+# endif
+#endif
+
+
+#if @GNULIB_RANDOM_R@
+# if @REPLACE_RANDOM_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef random_r
+#   define random_r rpl_random_r
+#  endif
+_GL_FUNCDECL_RPL (random_r, int, (struct random_data *buf, int32_t *result)
+                                 _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (random_r, int, (struct random_data *buf, int32_t *result));
+# else
+#  if !@HAVE_RANDOM_R@
+_GL_FUNCDECL_SYS (random_r, int, (struct random_data *buf, int32_t *result)
+                                 _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (random_r, int, (struct random_data *buf, int32_t *result));
+# endif
+_GL_CXXALIASWARN (random_r);
+#elif defined GNULIB_POSIXCHECK
+# undef random_r
+# if HAVE_RAW_DECL_RANDOM_R
+_GL_WARN_ON_USE (random_r, "random_r is unportable - "
+                 "use gnulib module random_r for portability");
+# endif
+#endif
+
+#if @GNULIB_RANDOM_R@
+# if @REPLACE_RANDOM_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef srandom_r
+#   define srandom_r rpl_srandom_r
+#  endif
+_GL_FUNCDECL_RPL (srandom_r, int,
+                  (unsigned int seed, struct random_data *rand_state)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (srandom_r, int,
+                  (unsigned int seed, struct random_data *rand_state));
+# else
+#  if !@HAVE_RANDOM_R@
+_GL_FUNCDECL_SYS (srandom_r, int,
+                  (unsigned int seed, struct random_data *rand_state)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (srandom_r, int,
+                  (unsigned int seed, struct random_data *rand_state));
+# endif
+_GL_CXXALIASWARN (srandom_r);
+#elif defined GNULIB_POSIXCHECK
+# undef srandom_r
+# if HAVE_RAW_DECL_SRANDOM_R
+_GL_WARN_ON_USE (srandom_r, "srandom_r is unportable - "
+                 "use gnulib module random_r for portability");
+# endif
+#endif
+
+#if @GNULIB_RANDOM_R@
+# if @REPLACE_RANDOM_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef initstate_r
+#   define initstate_r rpl_initstate_r
+#  endif
+_GL_FUNCDECL_RPL (initstate_r, int,
+                  (unsigned int seed, char *buf, size_t buf_size,
+                   struct random_data *rand_state)
+                  _GL_ARG_NONNULL ((2, 4)));
+_GL_CXXALIAS_RPL (initstate_r, int,
+                  (unsigned int seed, char *buf, size_t buf_size,
+                   struct random_data *rand_state));
+# else
+#  if !@HAVE_RANDOM_R@
+_GL_FUNCDECL_SYS (initstate_r, int,
+                  (unsigned int seed, char *buf, size_t buf_size,
+                   struct random_data *rand_state)
+                  _GL_ARG_NONNULL ((2, 4)));
+#  endif
+/* Need to cast, because on Haiku, the third parameter is
+                                                     unsigned long buf_size.  */
+_GL_CXXALIAS_SYS_CAST (initstate_r, int,
+                       (unsigned int seed, char *buf, size_t buf_size,
+                        struct random_data *rand_state));
+# endif
+_GL_CXXALIASWARN (initstate_r);
+#elif defined GNULIB_POSIXCHECK
+# undef initstate_r
+# if HAVE_RAW_DECL_INITSTATE_R
+_GL_WARN_ON_USE (initstate_r, "initstate_r is unportable - "
+                 "use gnulib module random_r for portability");
+# endif
+#endif
+
+#if @GNULIB_RANDOM_R@
+# if @REPLACE_RANDOM_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef setstate_r
+#   define setstate_r rpl_setstate_r
+#  endif
+_GL_FUNCDECL_RPL (setstate_r, int,
+                  (char *arg_state, struct random_data *rand_state)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (setstate_r, int,
+                  (char *arg_state, struct random_data *rand_state));
+# else
+#  if !@HAVE_RANDOM_R@
+_GL_FUNCDECL_SYS (setstate_r, int,
+                  (char *arg_state, struct random_data *rand_state)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+/* Need to cast, because on Haiku, the first parameter is
+                        void *arg_state.  */
+_GL_CXXALIAS_SYS_CAST (setstate_r, int,
+                       (char *arg_state, struct random_data *rand_state));
+# endif
+_GL_CXXALIASWARN (setstate_r);
+#elif defined GNULIB_POSIXCHECK
+# undef setstate_r
+# if HAVE_RAW_DECL_SETSTATE_R
+_GL_WARN_ON_USE (setstate_r, "setstate_r is unportable - "
+                 "use gnulib module random_r for portability");
+# endif
+#endif
+
+
+#if @GNULIB_REALLOC_POSIX@
+# if @REPLACE_REALLOC@
+#  if !((defined __cplusplus && defined GNULIB_NAMESPACE) \
+        || _GL_USE_STDLIB_ALLOC)
+#   undef realloc
+#   define realloc rpl_realloc
+#  endif
+_GL_FUNCDECL_RPL (realloc, void *, (void *ptr, size_t size)
+                                   _GL_ATTRIBUTE_DEALLOC_FREE);
+_GL_CXXALIAS_RPL (realloc, void *, (void *ptr, size_t size));
+# else
+#  if __GNUC__ >= 11
+/* For -Wmismatched-dealloc: Associate realloc with free or rpl_free.  */
+_GL_FUNCDECL_SYS (realloc, void *, (void *ptr, size_t size)
+                                   _GL_ATTRIBUTE_DEALLOC_FREE);
+#  endif
+_GL_CXXALIAS_SYS (realloc, void *, (void *ptr, size_t size));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (realloc);
+# endif
+#else
+# if @GNULIB_FREE_POSIX@ && __GNUC__ >= 11 && !defined realloc
+/* For -Wmismatched-dealloc: Associate realloc with free or rpl_free.  */
+_GL_FUNCDECL_SYS (realloc, void *, (void *ptr, size_t size)
+                                   _GL_ATTRIBUTE_DEALLOC_FREE);
+# endif
+# if defined GNULIB_POSIXCHECK && !_GL_USE_STDLIB_ALLOC
+#  undef realloc
+/* Assume realloc is always declared.  */
+_GL_WARN_ON_USE (realloc, "realloc is not POSIX compliant everywhere - "
+                 "use gnulib module realloc-posix for portability");
+# endif
+#endif
+
+
+#if @GNULIB_REALLOCARRAY@
+# if @REPLACE_REALLOCARRAY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef reallocarray
+#   define reallocarray rpl_reallocarray
+#  endif
+_GL_FUNCDECL_RPL (reallocarray, void *,
+                  (void *ptr, size_t nmemb, size_t size));
+_GL_CXXALIAS_RPL (reallocarray, void *,
+                  (void *ptr, size_t nmemb, size_t size));
+# else
+#  if ! @HAVE_REALLOCARRAY@
+_GL_FUNCDECL_SYS (reallocarray, void *,
+                  (void *ptr, size_t nmemb, size_t size));
+#  endif
+_GL_CXXALIAS_SYS (reallocarray, void *,
+                  (void *ptr, size_t nmemb, size_t size));
+# endif
+_GL_CXXALIASWARN (reallocarray);
+#elif defined GNULIB_POSIXCHECK
+# undef reallocarray
+# if HAVE_RAW_DECL_REALLOCARRAY
+_GL_WARN_ON_USE (reallocarray, "reallocarray is not portable - "
+                 "use gnulib module reallocarray for portability");
+# endif
+#endif
+
+#if @GNULIB_REALPATH@
+# if @REPLACE_REALPATH@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define realpath rpl_realpath
+#  endif
+_GL_FUNCDECL_RPL (realpath, char *,
+                  (const char *restrict name, char *restrict resolved)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (realpath, char *,
+                  (const char *restrict name, char *restrict resolved));
+# else
+#  if !@HAVE_REALPATH@
+_GL_FUNCDECL_SYS (realpath, char *,
+                  (const char *restrict name, char *restrict resolved)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (realpath, char *,
+                  (const char *restrict name, char *restrict resolved));
+# endif
+_GL_CXXALIASWARN (realpath);
+#elif defined GNULIB_POSIXCHECK
+# undef realpath
+# if HAVE_RAW_DECL_REALPATH
+_GL_WARN_ON_USE (realpath, "realpath is unportable - use gnulib module "
+                 "canonicalize or canonicalize-lgpl for portability");
+# endif
+#endif
+
+#if @GNULIB_RPMATCH@
+/* Test a user response to a question.
+   Return 1 if it is affirmative, 0 if it is negative, or -1 if not clear.  */
+# if !@HAVE_RPMATCH@
+_GL_FUNCDECL_SYS (rpmatch, int, (const char *response) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (rpmatch, int, (const char *response));
+_GL_CXXALIASWARN (rpmatch);
+#elif defined GNULIB_POSIXCHECK
+# undef rpmatch
+# if HAVE_RAW_DECL_RPMATCH
+_GL_WARN_ON_USE (rpmatch, "rpmatch is unportable - "
+                 "use gnulib module rpmatch for portability");
+# endif
+#endif
+
+#if @GNULIB_SECURE_GETENV@
+/* Look up NAME in the environment, returning 0 in insecure situations.  */
+# if !@HAVE_SECURE_GETENV@
+_GL_FUNCDECL_SYS (secure_getenv, char *,
+                  (char const *name) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (secure_getenv, char *, (char const *name));
+_GL_CXXALIASWARN (secure_getenv);
+#elif defined GNULIB_POSIXCHECK
+# undef secure_getenv
+# if HAVE_RAW_DECL_SECURE_GETENV
+_GL_WARN_ON_USE (secure_getenv, "secure_getenv is unportable - "
+                 "use gnulib module secure_getenv for portability");
+# endif
+#endif
+
+#if @GNULIB_SETENV@
+/* Set NAME to VALUE in the environment.
+   If REPLACE is nonzero, overwrite an existing value.  */
+# if @REPLACE_SETENV@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef setenv
+#   define setenv rpl_setenv
+#  endif
+_GL_FUNCDECL_RPL (setenv, int,
+                  (const char *name, const char *value, int replace)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (setenv, int,
+                  (const char *name, const char *value, int replace));
+# else
+#  if !@HAVE_DECL_SETENV@
+_GL_FUNCDECL_SYS (setenv, int,
+                  (const char *name, const char *value, int replace)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (setenv, int,
+                  (const char *name, const char *value, int replace));
+# endif
+# if !(@REPLACE_SETENV@ && !@HAVE_DECL_SETENV@)
+_GL_CXXALIASWARN (setenv);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef setenv
+# if HAVE_RAW_DECL_SETENV
+_GL_WARN_ON_USE (setenv, "setenv is unportable - "
+                 "use gnulib module setenv for portability");
+# endif
+#endif
+
+#if @GNULIB_STRTOD@
+ /* Parse a double from STRING, updating ENDP if appropriate.  */
+# if @REPLACE_STRTOD@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define strtod rpl_strtod
+#  endif
+#  define GNULIB_defined_strtod_function 1
+_GL_FUNCDECL_RPL (strtod, double,
+                  (const char *restrict str, char **restrict endp)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strtod, double,
+                  (const char *restrict str, char **restrict endp));
+# else
+#  if !@HAVE_STRTOD@
+_GL_FUNCDECL_SYS (strtod, double,
+                  (const char *restrict str, char **restrict endp)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (strtod, double,
+                  (const char *restrict str, char **restrict endp));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (strtod);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strtod
+# if HAVE_RAW_DECL_STRTOD
+_GL_WARN_ON_USE (strtod, "strtod is unportable - "
+                 "use gnulib module strtod for portability");
+# endif
+#endif
+
+#if @GNULIB_STRTOLD@
+ /* Parse a 'long double' from STRING, updating ENDP if appropriate.  */
+# if @REPLACE_STRTOLD@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define strtold rpl_strtold
+#  endif
+#  define GNULIB_defined_strtold_function 1
+_GL_FUNCDECL_RPL (strtold, long double,
+                  (const char *restrict str, char **restrict endp)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strtold, long double,
+                  (const char *restrict str, char **restrict endp));
+# else
+#  if !@HAVE_STRTOLD@
+_GL_FUNCDECL_SYS (strtold, long double,
+                  (const char *restrict str, char **restrict endp)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (strtold, long double,
+                  (const char *restrict str, char **restrict endp));
+# endif
+_GL_CXXALIASWARN (strtold);
+#elif defined GNULIB_POSIXCHECK
+# undef strtold
+# if HAVE_RAW_DECL_STRTOLD
+_GL_WARN_ON_USE (strtold, "strtold is unportable - "
+                 "use gnulib module strtold for portability");
+# endif
+#endif
+
+#if @GNULIB_STRTOL@
+/* Parse a signed integer whose textual representation starts at STRING.
+   The integer is expected to be in base BASE (2 <= BASE <= 36); if BASE == 0,
+   it may be decimal or octal (with prefix "0") or hexadecimal (with prefix
+   "0x").
+   If ENDPTR is not NULL, the address of the first byte after the integer is
+   stored in *ENDPTR.
+   Upon overflow, the return value is LONG_MAX or LONG_MIN, and errno is set
+   to ERANGE.  */
+# if @REPLACE_STRTOL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define strtol rpl_strtol
+#  endif
+#  define GNULIB_defined_strtol_function 1
+_GL_FUNCDECL_RPL (strtol, long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strtol, long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base));
+# else
+#  if !@HAVE_STRTOL@
+_GL_FUNCDECL_SYS (strtol, long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (strtol, long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base));
+# endif
+_GL_CXXALIASWARN (strtol);
+#elif defined GNULIB_POSIXCHECK
+# undef strtol
+# if HAVE_RAW_DECL_STRTOL
+_GL_WARN_ON_USE (strtol, "strtol is unportable - "
+                 "use gnulib module strtol for portability");
+# endif
+#endif
+
+#if @GNULIB_STRTOLL@
+/* Parse a signed integer whose textual representation starts at STRING.
+   The integer is expected to be in base BASE (2 <= BASE <= 36); if BASE == 0,
+   it may be decimal or octal (with prefix "0") or hexadecimal (with prefix
+   "0x").
+   If ENDPTR is not NULL, the address of the first byte after the integer is
+   stored in *ENDPTR.
+   Upon overflow, the return value is LLONG_MAX or LLONG_MIN, and errno is set
+   to ERANGE.  */
+# if @REPLACE_STRTOLL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define strtoll rpl_strtoll
+#  endif
+#  define GNULIB_defined_strtoll_function 1
+_GL_FUNCDECL_RPL (strtoll, long long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strtoll, long long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base));
+# else
+#  if !@HAVE_STRTOLL@
+_GL_FUNCDECL_SYS (strtoll, long long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (strtoll, long long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base));
+# endif
+_GL_CXXALIASWARN (strtoll);
+#elif defined GNULIB_POSIXCHECK
+# undef strtoll
+# if HAVE_RAW_DECL_STRTOLL
+_GL_WARN_ON_USE (strtoll, "strtoll is unportable - "
+                 "use gnulib module strtoll for portability");
+# endif
+#endif
+
+#if @GNULIB_STRTOUL@
+/* Parse an unsigned integer whose textual representation starts at STRING.
+   The integer is expected to be in base BASE (2 <= BASE <= 36); if BASE == 0,
+   it may be decimal or octal (with prefix "0") or hexadecimal (with prefix
+   "0x").
+   If ENDPTR is not NULL, the address of the first byte after the integer is
+   stored in *ENDPTR.
+   Upon overflow, the return value is ULONG_MAX, and errno is set to ERANGE.  */
+# if @REPLACE_STRTOUL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define strtoul rpl_strtoul
+#  endif
+#  define GNULIB_defined_strtoul_function 1
+_GL_FUNCDECL_RPL (strtoul, unsigned long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strtoul, unsigned long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base));
+# else
+#  if !@HAVE_STRTOUL@
+_GL_FUNCDECL_SYS (strtoul, unsigned long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (strtoul, unsigned long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base));
+# endif
+_GL_CXXALIASWARN (strtoul);
+#elif defined GNULIB_POSIXCHECK
+# undef strtoul
+# if HAVE_RAW_DECL_STRTOUL
+_GL_WARN_ON_USE (strtoul, "strtoul is unportable - "
+                 "use gnulib module strtoul for portability");
+# endif
+#endif
+
+#if @GNULIB_STRTOULL@
+/* Parse an unsigned integer whose textual representation starts at STRING.
+   The integer is expected to be in base BASE (2 <= BASE <= 36); if BASE == 0,
+   it may be decimal or octal (with prefix "0") or hexadecimal (with prefix
+   "0x").
+   If ENDPTR is not NULL, the address of the first byte after the integer is
+   stored in *ENDPTR.
+   Upon overflow, the return value is ULLONG_MAX, and errno is set to
+   ERANGE.  */
+# if @REPLACE_STRTOULL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define strtoull rpl_strtoull
+#  endif
+#  define GNULIB_defined_strtoull_function 1
+_GL_FUNCDECL_RPL (strtoull, unsigned long long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strtoull, unsigned long long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base));
+# else
+#  if !@HAVE_STRTOULL@
+_GL_FUNCDECL_SYS (strtoull, unsigned long long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (strtoull, unsigned long long,
+                  (const char *restrict string, char **restrict endptr,
+                   int base));
+# endif
+_GL_CXXALIASWARN (strtoull);
+#elif defined GNULIB_POSIXCHECK
+# undef strtoull
+# if HAVE_RAW_DECL_STRTOULL
+_GL_WARN_ON_USE (strtoull, "strtoull is unportable - "
+                 "use gnulib module strtoull for portability");
+# endif
+#endif
+
+#if @GNULIB_UNLOCKPT@
+/* Unlock the slave side of the pseudo-terminal whose master side is specified
+   by FD, so that it can be opened.  */
+# if !@HAVE_UNLOCKPT@
+_GL_FUNCDECL_SYS (unlockpt, int, (int fd));
+# endif
+_GL_CXXALIAS_SYS (unlockpt, int, (int fd));
+_GL_CXXALIASWARN (unlockpt);
+#elif defined GNULIB_POSIXCHECK
+# undef unlockpt
+# if HAVE_RAW_DECL_UNLOCKPT
+_GL_WARN_ON_USE (unlockpt, "unlockpt is not portable - "
+                 "use gnulib module unlockpt for portability");
+# endif
+#endif
+
+#if @GNULIB_UNSETENV@
+/* Remove the variable NAME from the environment.  */
+# if @REPLACE_UNSETENV@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef unsetenv
+#   define unsetenv rpl_unsetenv
+#  endif
+_GL_FUNCDECL_RPL (unsetenv, int, (const char *name) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (unsetenv, int, (const char *name));
+# else
+#  if !@HAVE_DECL_UNSETENV@
+_GL_FUNCDECL_SYS (unsetenv, int, (const char *name) _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (unsetenv, int, (const char *name));
+# endif
+# if !(@REPLACE_UNSETENV@ && !@HAVE_DECL_UNSETENV@)
+_GL_CXXALIASWARN (unsetenv);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef unsetenv
+# if HAVE_RAW_DECL_UNSETENV
+_GL_WARN_ON_USE (unsetenv, "unsetenv is unportable - "
+                 "use gnulib module unsetenv for portability");
+# endif
+#endif
+
+/* Convert a wide character to a multibyte character.  */
+#if @GNULIB_WCTOMB@
+# if @REPLACE_WCTOMB@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef wctomb
+#   define wctomb rpl_wctomb
+#  endif
+_GL_FUNCDECL_RPL (wctomb, int, (char *s, wchar_t wc));
+_GL_CXXALIAS_RPL (wctomb, int, (char *s, wchar_t wc));
+# else
+_GL_CXXALIAS_SYS (wctomb, int, (char *s, wchar_t wc));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wctomb);
+# endif
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_STDLIB_H */
+#endif /* _@GUARD_PREFIX@_STDLIB_H */
+#endif
diff --git a/src/grep/lib/stpcpy.c b/src/grep/lib/stpcpy.c
new file mode 100644
index 0000000..c312fe4
--- /dev/null
+++ b/src/grep/lib/stpcpy.c
@@ -0,0 +1,49 @@
+/* stpcpy.c -- copy a string and return pointer to end of new string
+   Copyright (C) 1992, 1995, 1997-1998, 2006, 2009-2021 Free Software
+   Foundation, Inc.
+
+   NOTE: The canonical source of this file is maintained with the GNU C Library.
+   Bugs can be reported to bug-glibc@prep.ai.mit.edu.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#undef __stpcpy
+#ifdef _LIBC
+# undef stpcpy
+#endif
+
+#ifndef weak_alias
+# define __stpcpy stpcpy
+#endif
+
+/* Copy SRC to DEST, returning the address of the terminating '\0' in DEST.  */
+char *
+__stpcpy (char *dest, const char *src)
+{
+  register char *d = dest;
+  register const char *s = src;
+
+  do
+    *d++ = *s;
+  while (*s++ != '\0');
+
+  return d - 1;
+}
+#ifdef weak_alias
+weak_alias (__stpcpy, stpcpy)
+#endif
diff --git a/src/grep/lib/str-kmp.h b/src/grep/lib/str-kmp.h
new file mode 100644
index 0000000..22c5701
--- /dev/null
+++ b/src/grep/lib/str-kmp.h
@@ -0,0 +1,161 @@
+/* Substring search in a NUL terminated string of UNIT elements,
+   using the Knuth-Morris-Pratt algorithm.
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2005.
+
+   This file is free software.
+   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
+   You can redistribute it and/or modify it under either
+     - the terms of the GNU Lesser General Public License as published
+       by the Free Software Foundation; either version 3, or (at your
+       option) any later version, or
+     - the terms of the GNU General Public License as published by the
+       Free Software Foundation; either version 2, or (at your option)
+       any later version, or
+     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License and the GNU General Public License
+   for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License and of the GNU General Public License along with this
+   program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Before including this file, you need to define:
+     UNIT                    The element type of the needle and haystack.
+     CANON_ELEMENT(c)        A macro that canonicalizes an element right after
+                             it has been fetched from needle or haystack.
+                             The argument is of type UNIT; the result must be
+                             of type UNIT as well.  */
+
+/* Knuth-Morris-Pratt algorithm.
+   See https://en.wikipedia.org/wiki/Knuth-Morris-Pratt_algorithm
+   HAYSTACK is the NUL terminated string in which to search for.
+   NEEDLE is the string to search for in HAYSTACK, consisting of NEEDLE_LEN
+   units.
+   Return a boolean indicating success:
+   Return true and set *RESULTP if the search was completed.
+   Return false if it was aborted because not enough memory was available.  */
+static bool
+knuth_morris_pratt (const UNIT *haystack,
+                    const UNIT *needle, size_t needle_len,
+                    const UNIT **resultp)
+{
+  size_t m = needle_len;
+
+  /* Allocate the table.  */
+  size_t *table = (size_t *) nmalloca (m, sizeof (size_t));
+  if (table == NULL)
+    return false;
+  /* Fill the table.
+     For 0 < i < m:
+       0 < table[i] <= i is defined such that
+       forall 0 < x < table[i]: needle[x..i-1] != needle[0..i-1-x],
+       and table[i] is as large as possible with this property.
+     This implies:
+     1) For 0 < i < m:
+          If table[i] < i,
+          needle[table[i]..i-1] = needle[0..i-1-table[i]].
+     2) For 0 < i < m:
+          rhaystack[0..i-1] == needle[0..i-1]
+          and exists h, i <= h < m: rhaystack[h] != needle[h]
+          implies
+          forall 0 <= x < table[i]: rhaystack[x..x+m-1] != needle[0..m-1].
+     table[0] remains uninitialized.  */
+  {
+    size_t i, j;
+
+    /* i = 1: Nothing to verify for x = 0.  */
+    table[1] = 1;
+    j = 0;
+
+    for (i = 2; i < m; i++)
+      {
+        /* Here: j = i-1 - table[i-1].
+           The inequality needle[x..i-1] != needle[0..i-1-x] is known to hold
+           for x < table[i-1], by induction.
+           Furthermore, if j>0: needle[i-1-j..i-2] = needle[0..j-1].  */
+        UNIT b = CANON_ELEMENT (needle[i - 1]);
+
+        for (;;)
+          {
+            /* Invariants: The inequality needle[x..i-1] != needle[0..i-1-x]
+               is known to hold for x < i-1-j.
+               Furthermore, if j>0: needle[i-1-j..i-2] = needle[0..j-1].  */
+            if (b == CANON_ELEMENT (needle[j]))
+              {
+                /* Set table[i] := i-1-j.  */
+                table[i] = i - ++j;
+                break;
+              }
+            /* The inequality needle[x..i-1] != needle[0..i-1-x] also holds
+               for x = i-1-j, because
+                 needle[i-1] != needle[j] = needle[i-1-x].  */
+            if (j == 0)
+              {
+                /* The inequality holds for all possible x.  */
+                table[i] = i;
+                break;
+              }
+            /* The inequality needle[x..i-1] != needle[0..i-1-x] also holds
+               for i-1-j < x < i-1-j+table[j], because for these x:
+                 needle[x..i-2]
+                 = needle[x-(i-1-j)..j-1]
+                 != needle[0..j-1-(x-(i-1-j))]  (by definition of table[j])
+                    = needle[0..i-2-x],
+               hence needle[x..i-1] != needle[0..i-1-x].
+               Furthermore
+                 needle[i-1-j+table[j]..i-2]
+                 = needle[table[j]..j-1]
+                 = needle[0..j-1-table[j]]  (by definition of table[j]).  */
+            j = j - table[j];
+          }
+        /* Here: j = i - table[i].  */
+      }
+  }
+
+  /* Search, using the table to accelerate the processing.  */
+  {
+    size_t j;
+    const UNIT *rhaystack;
+    const UNIT *phaystack;
+
+    *resultp = NULL;
+    j = 0;
+    rhaystack = haystack;
+    phaystack = haystack;
+    /* Invariant: phaystack = rhaystack + j.  */
+    while (*phaystack != 0)
+      if (CANON_ELEMENT (needle[j]) == CANON_ELEMENT (*phaystack))
+        {
+          j++;
+          phaystack++;
+          if (j == m)
+            {
+              /* The entire needle has been found.  */
+              *resultp = rhaystack;
+              break;
+            }
+        }
+      else if (j > 0)
+        {
+          /* Found a match of needle[0..j-1], mismatch at needle[j].  */
+          rhaystack += table[j];
+          j -= table[j];
+        }
+      else
+        {
+          /* Found a mismatch at needle[0] already.  */
+          rhaystack++;
+          phaystack++;
+        }
+  }
+
+  freea (table);
+  return true;
+}
+
+#undef CANON_ELEMENT
diff --git a/src/grep/lib/str-two-way.h b/src/grep/lib/str-two-way.h
new file mode 100644
index 0000000..fc2db03
--- /dev/null
+++ b/src/grep/lib/str-two-way.h
@@ -0,0 +1,452 @@
+/* Byte-wise substring search, using the Two-Way algorithm.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Eric Blake <ebb9@byu.net>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Before including this file, you need to include <config.h> and
+   <string.h>, and define:
+     RETURN_TYPE             A macro that expands to the return type.
+     AVAILABLE(h, h_l, j, n_l)
+                             A macro that returns nonzero if there are
+                             at least N_L bytes left starting at H[J].
+                             H is 'unsigned char *', H_L, J, and N_L
+                             are 'size_t'; H_L is an lvalue.  For
+                             NUL-terminated searches, H_L can be
+                             modified each iteration to avoid having
+                             to compute the end of H up front.
+
+  For case-insensitivity, you may optionally define:
+     CMP_FUNC(p1, p2, l)     A macro that returns 0 iff the first L
+                             characters of P1 and P2 are equal.
+     CANON_ELEMENT(c)        A macro that canonicalizes an element right after
+                             it has been fetched from one of the two strings.
+                             The argument is an 'unsigned char'; the result
+                             must be an 'unsigned char' as well.
+
+  This file undefines the macros documented above, and defines
+  LONG_NEEDLE_THRESHOLD.
+*/
+
+#include <limits.h>
+#include <stdint.h>
+
+/* We use the Two-Way string matching algorithm (also known as
+   Chrochemore-Perrin), which guarantees linear complexity with
+   constant space.  Additionally, for long needles, we also use a bad
+   character shift table similar to the Boyer-Moore algorithm to
+   achieve improved (potentially sub-linear) performance.
+
+   See https://www-igm.univ-mlv.fr/~lecroq/string/node26.html#SECTION00260,
+   https://en.wikipedia.org/wiki/Boyer-Moore_string_search_algorithm,
+   https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.34.6641&rep=rep1&type=pdf
+*/
+
+/* Point at which computing a bad-byte shift table is likely to be
+   worthwhile.  Small needles should not compute a table, since it
+   adds (1 << CHAR_BIT) + NEEDLE_LEN computations of preparation for a
+   speedup no greater than a factor of NEEDLE_LEN.  The larger the
+   needle, the better the potential performance gain.  On the other
+   hand, on non-POSIX systems with CHAR_BIT larger than eight, the
+   memory required for the table is prohibitive.  */
+#if CHAR_BIT < 10
+# define LONG_NEEDLE_THRESHOLD 32U
+#else
+# define LONG_NEEDLE_THRESHOLD SIZE_MAX
+#endif
+
+#ifndef MAX
+# define MAX(a, b) ((a < b) ? (b) : (a))
+#endif
+
+#ifndef CANON_ELEMENT
+# define CANON_ELEMENT(c) c
+#endif
+#ifndef CMP_FUNC
+# define CMP_FUNC memcmp
+#endif
+
+/* Perform a critical factorization of NEEDLE, of length NEEDLE_LEN.
+   Return the index of the first byte in the right half, and set
+   *PERIOD to the global period of the right half.
+
+   The global period of a string is the smallest index (possibly its
+   length) at which all remaining bytes in the string are repetitions
+   of the prefix (the last repetition may be a subset of the prefix).
+
+   When NEEDLE is factored into two halves, a local period is the
+   length of the smallest word that shares a suffix with the left half
+   and shares a prefix with the right half.  All factorizations of a
+   non-empty NEEDLE have a local period of at least 1 and no greater
+   than NEEDLE_LEN.
+
+   A critical factorization has the property that the local period
+   equals the global period.  All strings have at least one critical
+   factorization with the left half smaller than the global period.
+   And while some strings have more than one critical factorization,
+   it is provable that with an ordered alphabet, at least one of the
+   critical factorizations corresponds to a maximal suffix.
+
+   Given an ordered alphabet, a critical factorization can be computed
+   in linear time, with 2 * NEEDLE_LEN comparisons, by computing the
+   shorter of two ordered maximal suffixes.  The ordered maximal
+   suffixes are determined by lexicographic comparison while tracking
+   periodicity.  */
+static size_t
+critical_factorization (const unsigned char *needle, size_t needle_len,
+                        size_t *period)
+{
+  /* Index of last byte of left half, or SIZE_MAX.  */
+  size_t max_suffix, max_suffix_rev;
+  size_t j; /* Index into NEEDLE for current candidate suffix.  */
+  size_t k; /* Offset into current period.  */
+  size_t p; /* Intermediate period.  */
+  unsigned char a, b; /* Current comparison bytes.  */
+
+  /* Special case NEEDLE_LEN of 1 or 2 (all callers already filtered
+     out 0-length needles.  */
+  if (needle_len < 3)
+    {
+      *period = 1;
+      return needle_len - 1;
+    }
+
+  /* Invariants:
+     0 <= j < NEEDLE_LEN - 1
+     -1 <= max_suffix{,_rev} < j (treating SIZE_MAX as if it were signed)
+     min(max_suffix, max_suffix_rev) < global period of NEEDLE
+     1 <= p <= global period of NEEDLE
+     p == global period of the substring NEEDLE[max_suffix{,_rev}+1...j]
+     1 <= k <= p
+  */
+
+  /* Perform lexicographic search.  */
+  max_suffix = SIZE_MAX;
+  j = 0;
+  k = p = 1;
+  while (j + k < needle_len)
+    {
+      a = CANON_ELEMENT (needle[j + k]);
+      b = CANON_ELEMENT (needle[max_suffix + k]);
+      if (a < b)
+        {
+          /* Suffix is smaller, period is entire prefix so far.  */
+          j += k;
+          k = 1;
+          p = j - max_suffix;
+        }
+      else if (a == b)
+        {
+          /* Advance through repetition of the current period.  */
+          if (k != p)
+            ++k;
+          else
+            {
+              j += p;
+              k = 1;
+            }
+        }
+      else /* b < a */
+        {
+          /* Suffix is larger, start over from current location.  */
+          max_suffix = j++;
+          k = p = 1;
+        }
+    }
+  *period = p;
+
+  /* Perform reverse lexicographic search.  */
+  max_suffix_rev = SIZE_MAX;
+  j = 0;
+  k = p = 1;
+  while (j + k < needle_len)
+    {
+      a = CANON_ELEMENT (needle[j + k]);
+      b = CANON_ELEMENT (needle[max_suffix_rev + k]);
+      if (b < a)
+        {
+          /* Suffix is smaller, period is entire prefix so far.  */
+          j += k;
+          k = 1;
+          p = j - max_suffix_rev;
+        }
+      else if (a == b)
+        {
+          /* Advance through repetition of the current period.  */
+          if (k != p)
+            ++k;
+          else
+            {
+              j += p;
+              k = 1;
+            }
+        }
+      else /* a < b */
+        {
+          /* Suffix is larger, start over from current location.  */
+          max_suffix_rev = j++;
+          k = p = 1;
+        }
+    }
+
+  /* Choose the shorter suffix.  Return the index of the first byte of
+     the right half, rather than the last byte of the left half.
+
+     For some examples, 'banana' has two critical factorizations, both
+     exposed by the two lexicographic extreme suffixes of 'anana' and
+     'nana', where both suffixes have a period of 2.  On the other
+     hand, with 'aab' and 'bba', both strings have a single critical
+     factorization of the last byte, with the suffix having a period
+     of 1.  While the maximal lexicographic suffix of 'aab' is 'b',
+     the maximal lexicographic suffix of 'bba' is 'ba', which is not a
+     critical factorization.  Conversely, the maximal reverse
+     lexicographic suffix of 'a' works for 'bba', but not 'ab' for
+     'aab'.  The shorter suffix of the two will always be a critical
+     factorization.  */
+  if (max_suffix_rev + 1 < max_suffix + 1)
+    return max_suffix + 1;
+  *period = p;
+  return max_suffix_rev + 1;
+}
+
+/* Return the first location of non-empty NEEDLE within HAYSTACK, or
+   NULL.  HAYSTACK_LEN is the minimum known length of HAYSTACK.  This
+   method is optimized for NEEDLE_LEN < LONG_NEEDLE_THRESHOLD.
+   Performance is guaranteed to be linear, with an initialization cost
+   of 2 * NEEDLE_LEN comparisons.
+
+   If AVAILABLE does not modify HAYSTACK_LEN (as in memmem), then at
+   most 2 * HAYSTACK_LEN - NEEDLE_LEN comparisons occur in searching.
+   If AVAILABLE modifies HAYSTACK_LEN (as in strstr), then at most 3 *
+   HAYSTACK_LEN - NEEDLE_LEN comparisons occur in searching.  */
+static RETURN_TYPE
+two_way_short_needle (const unsigned char *haystack, size_t haystack_len,
+                      const unsigned char *needle, size_t needle_len)
+{
+  size_t i; /* Index into current byte of NEEDLE.  */
+  size_t j; /* Index into current window of HAYSTACK.  */
+  size_t period; /* The period of the right half of needle.  */
+  size_t suffix; /* The index of the right half of needle.  */
+
+  /* Factor the needle into two halves, such that the left half is
+     smaller than the global period, and the right half is
+     periodic (with a period as large as NEEDLE_LEN - suffix).  */
+  suffix = critical_factorization (needle, needle_len, &period);
+
+  /* Perform the search.  Each iteration compares the right half
+     first.  */
+  if (CMP_FUNC (needle, needle + period, suffix) == 0)
+    {
+      /* Entire needle is periodic; a mismatch in the left half can
+         only advance by the period, so use memory to avoid rescanning
+         known occurrences of the period in the right half.  */
+      size_t memory = 0;
+      j = 0;
+      while (AVAILABLE (haystack, haystack_len, j, needle_len))
+        {
+          /* Scan for matches in right half.  */
+          i = MAX (suffix, memory);
+          while (i < needle_len && (CANON_ELEMENT (needle[i])
+                                    == CANON_ELEMENT (haystack[i + j])))
+            ++i;
+          if (needle_len <= i)
+            {
+              /* Scan for matches in left half.  */
+              i = suffix - 1;
+              while (memory < i + 1 && (CANON_ELEMENT (needle[i])
+                                        == CANON_ELEMENT (haystack[i + j])))
+                --i;
+              if (i + 1 < memory + 1)
+                return (RETURN_TYPE) (haystack + j);
+              /* No match, so remember how many repetitions of period
+                 on the right half were scanned.  */
+              j += period;
+              memory = needle_len - period;
+            }
+          else
+            {
+              j += i - suffix + 1;
+              memory = 0;
+            }
+        }
+    }
+  else
+    {
+      /* The two halves of needle are distinct; no extra memory is
+         required, and any mismatch results in a maximal shift.  */
+      period = MAX (suffix, needle_len - suffix) + 1;
+      j = 0;
+      while (AVAILABLE (haystack, haystack_len, j, needle_len))
+        {
+          /* Scan for matches in right half.  */
+          i = suffix;
+          while (i < needle_len && (CANON_ELEMENT (needle[i])
+                                    == CANON_ELEMENT (haystack[i + j])))
+            ++i;
+          if (needle_len <= i)
+            {
+              /* Scan for matches in left half.  */
+              i = suffix - 1;
+              while (i != SIZE_MAX && (CANON_ELEMENT (needle[i])
+                                       == CANON_ELEMENT (haystack[i + j])))
+                --i;
+              if (i == SIZE_MAX)
+                return (RETURN_TYPE) (haystack + j);
+              j += period;
+            }
+          else
+            j += i - suffix + 1;
+        }
+    }
+  return NULL;
+}
+
+/* Return the first location of non-empty NEEDLE within HAYSTACK, or
+   NULL.  HAYSTACK_LEN is the minimum known length of HAYSTACK.  This
+   method is optimized for LONG_NEEDLE_THRESHOLD <= NEEDLE_LEN.
+   Performance is guaranteed to be linear, with an initialization cost
+   of 3 * NEEDLE_LEN + (1 << CHAR_BIT) operations.
+
+   If AVAILABLE does not modify HAYSTACK_LEN (as in memmem), then at
+   most 2 * HAYSTACK_LEN - NEEDLE_LEN comparisons occur in searching,
+   and sublinear performance O(HAYSTACK_LEN / NEEDLE_LEN) is possible.
+   If AVAILABLE modifies HAYSTACK_LEN (as in strstr), then at most 3 *
+   HAYSTACK_LEN - NEEDLE_LEN comparisons occur in searching, and
+   sublinear performance is not possible.  */
+static RETURN_TYPE
+two_way_long_needle (const unsigned char *haystack, size_t haystack_len,
+                     const unsigned char *needle, size_t needle_len)
+{
+  size_t i; /* Index into current byte of NEEDLE.  */
+  size_t j; /* Index into current window of HAYSTACK.  */
+  size_t period; /* The period of the right half of needle.  */
+  size_t suffix; /* The index of the right half of needle.  */
+  size_t shift_table[1U << CHAR_BIT]; /* See below.  */
+
+  /* Factor the needle into two halves, such that the left half is
+     smaller than the global period, and the right half is
+     periodic (with a period as large as NEEDLE_LEN - suffix).  */
+  suffix = critical_factorization (needle, needle_len, &period);
+
+  /* Populate shift_table.  For each possible byte value c,
+     shift_table[c] is the distance from the last occurrence of c to
+     the end of NEEDLE, or NEEDLE_LEN if c is absent from the NEEDLE.
+     shift_table[NEEDLE[NEEDLE_LEN - 1]] contains the only 0.  */
+  for (i = 0; i < 1U << CHAR_BIT; i++)
+    shift_table[i] = needle_len;
+  for (i = 0; i < needle_len; i++)
+    shift_table[CANON_ELEMENT (needle[i])] = needle_len - i - 1;
+
+  /* Perform the search.  Each iteration compares the right half
+     first.  */
+  if (CMP_FUNC (needle, needle + period, suffix) == 0)
+    {
+      /* Entire needle is periodic; a mismatch in the left half can
+         only advance by the period, so use memory to avoid rescanning
+         known occurrences of the period in the right half.  */
+      size_t memory = 0;
+      size_t shift;
+      j = 0;
+      while (AVAILABLE (haystack, haystack_len, j, needle_len))
+        {
+          /* Check the last byte first; if it does not match, then
+             shift to the next possible match location.  */
+          shift = shift_table[CANON_ELEMENT (haystack[j + needle_len - 1])];
+          if (0 < shift)
+            {
+              if (memory && shift < period)
+                {
+                  /* Since needle is periodic, but the last period has
+                     a byte out of place, there can be no match until
+                     after the mismatch.  */
+                  shift = needle_len - period;
+                }
+              memory = 0;
+              j += shift;
+              continue;
+            }
+          /* Scan for matches in right half.  The last byte has
+             already been matched, by virtue of the shift table.  */
+          i = MAX (suffix, memory);
+          while (i < needle_len - 1 && (CANON_ELEMENT (needle[i])
+                                        == CANON_ELEMENT (haystack[i + j])))
+            ++i;
+          if (needle_len - 1 <= i)
+            {
+              /* Scan for matches in left half.  */
+              i = suffix - 1;
+              while (memory < i + 1 && (CANON_ELEMENT (needle[i])
+                                        == CANON_ELEMENT (haystack[i + j])))
+                --i;
+              if (i + 1 < memory + 1)
+                return (RETURN_TYPE) (haystack + j);
+              /* No match, so remember how many repetitions of period
+                 on the right half were scanned.  */
+              j += period;
+              memory = needle_len - period;
+            }
+          else
+            {
+              j += i - suffix + 1;
+              memory = 0;
+            }
+        }
+    }
+  else
+    {
+      /* The two halves of needle are distinct; no extra memory is
+         required, and any mismatch results in a maximal shift.  */
+      size_t shift;
+      period = MAX (suffix, needle_len - suffix) + 1;
+      j = 0;
+      while (AVAILABLE (haystack, haystack_len, j, needle_len))
+        {
+          /* Check the last byte first; if it does not match, then
+             shift to the next possible match location.  */
+          shift = shift_table[CANON_ELEMENT (haystack[j + needle_len - 1])];
+          if (0 < shift)
+            {
+              j += shift;
+              continue;
+            }
+          /* Scan for matches in right half.  The last byte has
+             already been matched, by virtue of the shift table.  */
+          i = suffix;
+          while (i < needle_len - 1 && (CANON_ELEMENT (needle[i])
+                                        == CANON_ELEMENT (haystack[i + j])))
+            ++i;
+          if (needle_len - 1 <= i)
+            {
+              /* Scan for matches in left half.  */
+              i = suffix - 1;
+              while (i != SIZE_MAX && (CANON_ELEMENT (needle[i])
+                                       == CANON_ELEMENT (haystack[i + j])))
+                --i;
+              if (i == SIZE_MAX)
+                return (RETURN_TYPE) (haystack + j);
+              j += period;
+            }
+          else
+            j += i - suffix + 1;
+        }
+    }
+  return NULL;
+}
+
+#undef AVAILABLE
+#undef CANON_ELEMENT
+#undef CMP_FUNC
+#undef MAX
+#undef RETURN_TYPE
diff --git a/src/grep/lib/strdup.c b/src/grep/lib/strdup.c
new file mode 100644
index 0000000..e5d4d75
--- /dev/null
+++ b/src/grep/lib/strdup.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1991, 1996-1998, 2002-2004, 2006-2007, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <config.h>
+#endif
+
+/* Get specification.  */
+#include <string.h>
+
+#include <stdlib.h>
+
+#undef __strdup
+#ifdef _LIBC
+# undef strdup
+#endif
+
+#ifndef weak_alias
+# define __strdup strdup
+#endif
+
+/* Duplicate S, returning an identical malloc'd string.  */
+char *
+__strdup (const char *s)
+{
+  size_t len = strlen (s) + 1;
+  void *new = malloc (len);
+
+  if (new == NULL)
+    return NULL;
+
+  return (char *) memcpy (new, s, len);
+}
+#ifdef libc_hidden_def
+libc_hidden_def (__strdup)
+#endif
+#ifdef weak_alias
+weak_alias (__strdup, strdup)
+#endif
diff --git a/src/grep/lib/streq.h b/src/grep/lib/streq.h
new file mode 100644
index 0000000..adabd15
--- /dev/null
+++ b/src/grep/lib/streq.h
@@ -0,0 +1,176 @@
+/* Optimized string comparison.
+   Copyright (C) 2001-2002, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>.  */
+
+#ifndef _GL_STREQ_H
+#define _GL_STREQ_H
+
+#include <string.h>
+
+/* STREQ_OPT allows to optimize string comparison with a small literal string.
+     STREQ_OPT (s, "EUC-KR", 'E', 'U', 'C', '-', 'K', 'R', 0, 0, 0)
+   is semantically equivalent to
+     strcmp (s, "EUC-KR") == 0
+   just faster.  */
+
+/* Help GCC to generate good code for string comparisons with
+   immediate strings. */
+#if (defined __GNUC__ || defined __clang__) && defined __OPTIMIZE__
+
+static inline int
+streq9 (const char *s1, const char *s2)
+{
+  return strcmp (s1 + 9, s2 + 9) == 0;
+}
+
+static inline int
+streq8 (const char *s1, const char *s2, char s28)
+{
+  if (s1[8] == s28)
+    {
+      if (s28 == 0)
+        return 1;
+      else
+        return streq9 (s1, s2);
+    }
+  else
+    return 0;
+}
+
+static inline int
+streq7 (const char *s1, const char *s2, char s27, char s28)
+{
+  if (s1[7] == s27)
+    {
+      if (s27 == 0)
+        return 1;
+      else
+        return streq8 (s1, s2, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+streq6 (const char *s1, const char *s2, char s26, char s27, char s28)
+{
+  if (s1[6] == s26)
+    {
+      if (s26 == 0)
+        return 1;
+      else
+        return streq7 (s1, s2, s27, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+streq5 (const char *s1, const char *s2, char s25, char s26, char s27, char s28)
+{
+  if (s1[5] == s25)
+    {
+      if (s25 == 0)
+        return 1;
+      else
+        return streq6 (s1, s2, s26, s27, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+streq4 (const char *s1, const char *s2, char s24, char s25, char s26, char s27, char s28)
+{
+  if (s1[4] == s24)
+    {
+      if (s24 == 0)
+        return 1;
+      else
+        return streq5 (s1, s2, s25, s26, s27, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+streq3 (const char *s1, const char *s2, char s23, char s24, char s25, char s26, char s27, char s28)
+{
+  if (s1[3] == s23)
+    {
+      if (s23 == 0)
+        return 1;
+      else
+        return streq4 (s1, s2, s24, s25, s26, s27, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+streq2 (const char *s1, const char *s2, char s22, char s23, char s24, char s25, char s26, char s27, char s28)
+{
+  if (s1[2] == s22)
+    {
+      if (s22 == 0)
+        return 1;
+      else
+        return streq3 (s1, s2, s23, s24, s25, s26, s27, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+streq1 (const char *s1, const char *s2, char s21, char s22, char s23, char s24, char s25, char s26, char s27, char s28)
+{
+  if (s1[1] == s21)
+    {
+      if (s21 == 0)
+        return 1;
+      else
+        return streq2 (s1, s2, s22, s23, s24, s25, s26, s27, s28);
+    }
+  else
+    return 0;
+}
+
+static inline int
+streq0 (const char *s1, const char *s2, char s20, char s21, char s22, char s23, char s24, char s25, char s26, char s27, char s28)
+{
+  if (s1[0] == s20)
+    {
+      if (s20 == 0)
+        return 1;
+      else
+        return streq1 (s1, s2, s21, s22, s23, s24, s25, s26, s27, s28);
+    }
+  else
+    return 0;
+}
+
+#define STREQ_OPT(s1,s2,s20,s21,s22,s23,s24,s25,s26,s27,s28) \
+  streq0 (s1, s2, s20, s21, s22, s23, s24, s25, s26, s27, s28)
+
+#else
+
+#define STREQ_OPT(s1,s2,s20,s21,s22,s23,s24,s25,s26,s27,s28) \
+  (strcmp (s1, s2) == 0)
+
+#endif
+
+#endif /* _GL_STREQ_H */
diff --git a/src/grep/lib/strerror-override.c b/src/grep/lib/strerror-override.c
new file mode 100644
index 0000000..e76d55d
--- /dev/null
+++ b/src/grep/lib/strerror-override.c
@@ -0,0 +1,306 @@
+/* strerror-override.c --- POSIX compatible system error routine
+
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
+
+#include <config.h>
+
+#include "strerror-override.h"
+
+#include <errno.h>
+
+#if GNULIB_defined_EWINSOCK /* native Windows platforms */
+# if HAVE_WINSOCK2_H
+#  include <winsock2.h>
+# endif
+#endif
+
+#if !GNULIB_defined_strerror_override_macro
+
+/* If ERRNUM maps to an errno value defined by gnulib, return a string
+   describing the error.  Otherwise return NULL.  */
+const char *
+strerror_override (int errnum)
+{
+  /* These error messages are taken from glibc/sysdeps/gnu/errlist.c.  */
+  switch (errnum)
+    {
+# if REPLACE_STRERROR_0
+    case 0:
+      return "Success";
+# endif
+
+# if GNULIB_defined_ESOCK /* native Windows platforms with older <errno.h> */
+    case EINPROGRESS:
+      return "Operation now in progress";
+    case EALREADY:
+      return "Operation already in progress";
+    case ENOTSOCK:
+      return "Socket operation on non-socket";
+    case EDESTADDRREQ:
+      return "Destination address required";
+    case EMSGSIZE:
+      return "Message too long";
+    case EPROTOTYPE:
+      return "Protocol wrong type for socket";
+    case ENOPROTOOPT:
+      return "Protocol not available";
+    case EPROTONOSUPPORT:
+      return "Protocol not supported";
+    case EOPNOTSUPP:
+      return "Operation not supported";
+    case EAFNOSUPPORT:
+      return "Address family not supported by protocol";
+    case EADDRINUSE:
+      return "Address already in use";
+    case EADDRNOTAVAIL:
+      return "Cannot assign requested address";
+    case ENETDOWN:
+      return "Network is down";
+    case ENETUNREACH:
+      return "Network is unreachable";
+    case ECONNRESET:
+      return "Connection reset by peer";
+    case ENOBUFS:
+      return "No buffer space available";
+    case EISCONN:
+      return "Transport endpoint is already connected";
+    case ENOTCONN:
+      return "Transport endpoint is not connected";
+    case ETIMEDOUT:
+      return "Connection timed out";
+    case ECONNREFUSED:
+      return "Connection refused";
+    case ELOOP:
+      return "Too many levels of symbolic links";
+    case EHOSTUNREACH:
+      return "No route to host";
+    case EWOULDBLOCK:
+      return "Operation would block";
+# endif
+# if GNULIB_defined_ESTREAMS /* native Windows platforms with older <errno.h> */
+    case ETXTBSY:
+      return "Text file busy";
+    case ENODATA:
+      return "No data available";
+    case ENOSR:
+      return "Out of streams resources";
+    case ENOSTR:
+      return "Device not a stream";
+    case ETIME:
+      return "Timer expired";
+    case EOTHER:
+      return "Other error";
+# endif
+# if GNULIB_defined_EWINSOCK /* native Windows platforms */
+    case ESOCKTNOSUPPORT:
+      return "Socket type not supported";
+    case EPFNOSUPPORT:
+      return "Protocol family not supported";
+    case ESHUTDOWN:
+      return "Cannot send after transport endpoint shutdown";
+    case ETOOMANYREFS:
+      return "Too many references: cannot splice";
+    case EHOSTDOWN:
+      return "Host is down";
+    case EPROCLIM:
+      return "Too many processes";
+    case EUSERS:
+      return "Too many users";
+    case EDQUOT:
+      return "Disk quota exceeded";
+    case ESTALE:
+      return "Stale NFS file handle";
+    case EREMOTE:
+      return "Object is remote";
+#  if HAVE_WINSOCK2_H
+      /* WSA_INVALID_HANDLE maps to EBADF */
+      /* WSA_NOT_ENOUGH_MEMORY maps to ENOMEM */
+      /* WSA_INVALID_PARAMETER maps to EINVAL */
+    case WSA_OPERATION_ABORTED:
+      return "Overlapped operation aborted";
+    case WSA_IO_INCOMPLETE:
+      return "Overlapped I/O event object not in signaled state";
+    case WSA_IO_PENDING:
+      return "Overlapped operations will complete later";
+      /* WSAEINTR maps to EINTR */
+      /* WSAEBADF maps to EBADF */
+      /* WSAEACCES maps to EACCES */
+      /* WSAEFAULT maps to EFAULT */
+      /* WSAEINVAL maps to EINVAL */
+      /* WSAEMFILE maps to EMFILE */
+      /* WSAEWOULDBLOCK maps to EWOULDBLOCK */
+      /* WSAEINPROGRESS maps to EINPROGRESS */
+      /* WSAEALREADY maps to EALREADY */
+      /* WSAENOTSOCK maps to ENOTSOCK */
+      /* WSAEDESTADDRREQ maps to EDESTADDRREQ */
+      /* WSAEMSGSIZE maps to EMSGSIZE */
+      /* WSAEPROTOTYPE maps to EPROTOTYPE */
+      /* WSAENOPROTOOPT maps to ENOPROTOOPT */
+      /* WSAEPROTONOSUPPORT maps to EPROTONOSUPPORT */
+      /* WSAESOCKTNOSUPPORT is ESOCKTNOSUPPORT */
+      /* WSAEOPNOTSUPP maps to EOPNOTSUPP */
+      /* WSAEPFNOSUPPORT is EPFNOSUPPORT */
+      /* WSAEAFNOSUPPORT maps to EAFNOSUPPORT */
+      /* WSAEADDRINUSE maps to EADDRINUSE */
+      /* WSAEADDRNOTAVAIL maps to EADDRNOTAVAIL */
+      /* WSAENETDOWN maps to ENETDOWN */
+      /* WSAENETUNREACH maps to ENETUNREACH */
+      /* WSAENETRESET maps to ENETRESET */
+      /* WSAECONNABORTED maps to ECONNABORTED */
+      /* WSAECONNRESET maps to ECONNRESET */
+      /* WSAENOBUFS maps to ENOBUFS */
+      /* WSAEISCONN maps to EISCONN */
+      /* WSAENOTCONN maps to ENOTCONN */
+      /* WSAESHUTDOWN is ESHUTDOWN */
+      /* WSAETOOMANYREFS is ETOOMANYREFS */
+      /* WSAETIMEDOUT maps to ETIMEDOUT */
+      /* WSAECONNREFUSED maps to ECONNREFUSED */
+      /* WSAELOOP maps to ELOOP */
+      /* WSAENAMETOOLONG maps to ENAMETOOLONG */
+      /* WSAEHOSTDOWN is EHOSTDOWN */
+      /* WSAEHOSTUNREACH maps to EHOSTUNREACH */
+      /* WSAENOTEMPTY maps to ENOTEMPTY */
+      /* WSAEPROCLIM is EPROCLIM */
+      /* WSAEUSERS is EUSERS */
+      /* WSAEDQUOT is EDQUOT */
+      /* WSAESTALE is ESTALE */
+      /* WSAEREMOTE is EREMOTE */
+    case WSASYSNOTREADY:
+      return "Network subsystem is unavailable";
+    case WSAVERNOTSUPPORTED:
+      return "Winsock.dll version out of range";
+    case WSANOTINITIALISED:
+      return "Successful WSAStartup not yet performed";
+    case WSAEDISCON:
+      return "Graceful shutdown in progress";
+    case WSAENOMORE: case WSA_E_NO_MORE:
+      return "No more results";
+    case WSAECANCELLED: case WSA_E_CANCELLED:
+      return "Call was canceled";
+    case WSAEINVALIDPROCTABLE:
+      return "Procedure call table is invalid";
+    case WSAEINVALIDPROVIDER:
+      return "Service provider is invalid";
+    case WSAEPROVIDERFAILEDINIT:
+      return "Service provider failed to initialize";
+    case WSASYSCALLFAILURE:
+      return "System call failure";
+    case WSASERVICE_NOT_FOUND:
+      return "Service not found";
+    case WSATYPE_NOT_FOUND:
+      return "Class type not found";
+    case WSAEREFUSED:
+      return "Database query was refused";
+    case WSAHOST_NOT_FOUND:
+      return "Host not found";
+    case WSATRY_AGAIN:
+      return "Nonauthoritative host not found";
+    case WSANO_RECOVERY:
+      return "Nonrecoverable error";
+    case WSANO_DATA:
+      return "Valid name, no data record of requested type";
+      /* WSA_QOS_* omitted */
+#  endif
+# endif
+
+# if GNULIB_defined_ENOMSG
+    case ENOMSG:
+      return "No message of desired type";
+# endif
+
+# if GNULIB_defined_EIDRM
+    case EIDRM:
+      return "Identifier removed";
+# endif
+
+# if GNULIB_defined_ENOLINK
+    case ENOLINK:
+      return "Link has been severed";
+# endif
+
+# if GNULIB_defined_EPROTO
+    case EPROTO:
+      return "Protocol error";
+# endif
+
+# if GNULIB_defined_EMULTIHOP
+    case EMULTIHOP:
+      return "Multihop attempted";
+# endif
+
+# if GNULIB_defined_EBADMSG
+    case EBADMSG:
+      return "Bad message";
+# endif
+
+# if GNULIB_defined_EOVERFLOW
+    case EOVERFLOW:
+      return "Value too large for defined data type";
+# endif
+
+# if GNULIB_defined_ENOTSUP
+    case ENOTSUP:
+      return "Not supported";
+# endif
+
+# if GNULIB_defined_ENETRESET
+    case ENETRESET:
+      return "Network dropped connection on reset";
+# endif
+
+# if GNULIB_defined_ECONNABORTED
+    case ECONNABORTED:
+      return "Software caused connection abort";
+# endif
+
+# if GNULIB_defined_ESTALE
+    case ESTALE:
+      return "Stale NFS file handle";
+# endif
+
+# if GNULIB_defined_EDQUOT
+    case EDQUOT:
+      return "Disk quota exceeded";
+# endif
+
+# if GNULIB_defined_ECANCELED
+    case ECANCELED:
+      return "Operation canceled";
+# endif
+
+# if GNULIB_defined_EOWNERDEAD
+    case EOWNERDEAD:
+      return "Owner died";
+# endif
+
+# if GNULIB_defined_ENOTRECOVERABLE
+    case ENOTRECOVERABLE:
+      return "State not recoverable";
+# endif
+
+# if GNULIB_defined_EILSEQ
+    case EILSEQ:
+      return "Invalid or incomplete multibyte or wide character";
+# endif
+
+    default:
+      return NULL;
+    }
+}
+
+#endif
diff --git a/src/grep/lib/strerror-override.h b/src/grep/lib/strerror-override.h
new file mode 100644
index 0000000..9cfc5ad
--- /dev/null
+++ b/src/grep/lib/strerror-override.h
@@ -0,0 +1,57 @@
+/* strerror-override.h --- POSIX compatible system error routine
+
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_STRERROR_OVERRIDE_H
+# define _GL_STRERROR_OVERRIDE_H
+
+# include <errno.h>
+# include <stddef.h>
+
+/* Reasonable buffer size that should never trigger ERANGE; if this
+   proves too small, we intentionally abort(), to remind us to fix
+   this value.  */
+# define STACKBUF_LEN 256
+
+/* If ERRNUM maps to an errno value defined by gnulib, return a string
+   describing the error.  Otherwise return NULL.  */
+# if REPLACE_STRERROR_0 \
+     || GNULIB_defined_ESOCK \
+     || GNULIB_defined_ESTREAMS \
+     || GNULIB_defined_EWINSOCK \
+     || GNULIB_defined_ENOMSG \
+     || GNULIB_defined_EIDRM \
+     || GNULIB_defined_ENOLINK \
+     || GNULIB_defined_EPROTO \
+     || GNULIB_defined_EMULTIHOP \
+     || GNULIB_defined_EBADMSG \
+     || GNULIB_defined_EOVERFLOW \
+     || GNULIB_defined_ENOTSUP \
+     || GNULIB_defined_ENETRESET \
+     || GNULIB_defined_ECONNABORTED \
+     || GNULIB_defined_ESTALE \
+     || GNULIB_defined_EDQUOT \
+     || GNULIB_defined_ECANCELED \
+     || GNULIB_defined_EOWNERDEAD \
+     || GNULIB_defined_ENOTRECOVERABLE \
+     || GNULIB_defined_EILSEQ
+extern const char *strerror_override (int errnum) _GL_ATTRIBUTE_CONST;
+# else
+#  define strerror_override(ignored) NULL
+#  define GNULIB_defined_strerror_override_macro 1
+# endif
+
+#endif /* _GL_STRERROR_OVERRIDE_H */
diff --git a/src/grep/lib/strerror.c b/src/grep/lib/strerror.c
new file mode 100644
index 0000000..83926df
--- /dev/null
+++ b/src/grep/lib/strerror.c
@@ -0,0 +1,71 @@
+/* strerror.c --- POSIX compatible system error routine
+
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <string.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "intprops.h"
+#include "strerror-override.h"
+#include "verify.h"
+
+/* Use the system functions, not the gnulib overrides in this file.  */
+#undef sprintf
+
+char *
+strerror (int n)
+#undef strerror
+{
+  static char buf[STACKBUF_LEN];
+  size_t len;
+
+  /* Cast away const, due to the historical signature of strerror;
+     callers should not be modifying the string.  */
+  const char *msg = strerror_override (n);
+  if (msg)
+    return (char *) msg;
+
+  msg = strerror (n);
+
+  /* Our strerror_r implementation might use the system's strerror
+     buffer, so all other clients of strerror have to see the error
+     copied into a buffer that we manage.  This is not thread-safe,
+     even if the system strerror is, but portable programs shouldn't
+     be using strerror if they care about thread-safety.  */
+  if (!msg || !*msg)
+    {
+      static char const fmt[] = "Unknown error %d";
+      verify (sizeof buf >= sizeof (fmt) + INT_STRLEN_BOUND (n));
+      sprintf (buf, fmt, n);
+      errno = EINVAL;
+      return buf;
+    }
+
+  /* Fix STACKBUF_LEN if this ever aborts.  */
+  len = strlen (msg);
+  if (sizeof buf <= len)
+    abort ();
+
+  memcpy (buf, msg, len + 1);
+  return buf;
+}
diff --git a/src/grep/lib/striconv.c b/src/grep/lib/striconv.c
new file mode 100644
index 0000000..b92bdc9
--- /dev/null
+++ b/src/grep/lib/striconv.c
@@ -0,0 +1,451 @@
+/* Charset conversion.
+   Copyright (C) 2001-2007, 2010-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible and Simon Josefsson.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "striconv.h"
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if HAVE_ICONV
+# include <iconv.h>
+/* Get MB_LEN_MAX, CHAR_BIT.  */
+# include <limits.h>
+#endif
+
+#include "c-strcase.h"
+
+#ifndef SIZE_MAX
+# define SIZE_MAX ((size_t) -1)
+#endif
+
+
+#if HAVE_ICONV
+
+int
+mem_cd_iconv (const char *src, size_t srclen, iconv_t cd,
+              char **resultp, size_t *lengthp)
+{
+# define tmpbufsize 4096
+  size_t length;
+  char *result;
+
+  /* Avoid glibc-2.1 bug and Solaris 2.7-2.9 bug.  */
+# if defined _LIBICONV_VERSION \
+     || !(((__GLIBC__ == 2 && __GLIBC_MINOR__ <= 1) && !defined __UCLIBC__) \
+          || defined __sun)
+  /* Set to the initial state.  */
+  iconv (cd, NULL, NULL, NULL, NULL);
+# endif
+
+  /* Determine the length we need.  */
+  {
+    size_t count = 0;
+    /* The alignment is needed when converting e.g. to glibc's WCHAR_T or
+       libiconv's UCS-4-INTERNAL encoding.  */
+    union { unsigned int align; char buf[tmpbufsize]; } tmp;
+# define tmpbuf tmp.buf
+    const char *inptr = src;
+    size_t insize = srclen;
+
+    while (insize > 0)
+      {
+        char *outptr = tmpbuf;
+        size_t outsize = tmpbufsize;
+        size_t res = iconv (cd,
+                            (ICONV_CONST char **) &inptr, &insize,
+                            &outptr, &outsize);
+
+        if (res == (size_t)(-1))
+          {
+            if (errno == E2BIG)
+              ;
+            else if (errno == EINVAL)
+              break;
+            else
+              return -1;
+          }
+# if !defined _LIBICONV_VERSION && !(defined __GLIBC__ && !defined __UCLIBC__)
+        /* Irix iconv() inserts a NUL byte if it cannot convert.
+           NetBSD iconv() inserts a question mark if it cannot convert.
+           Only GNU libiconv and GNU libc are known to prefer to fail rather
+           than doing a lossy conversion.  */
+        else if (res > 0)
+          {
+            errno = EILSEQ;
+            return -1;
+          }
+# endif
+        count += outptr - tmpbuf;
+      }
+    /* Avoid glibc-2.1 bug and Solaris 2.7 bug.  */
+# if defined _LIBICONV_VERSION \
+     || !(((__GLIBC__ == 2 && __GLIBC_MINOR__ <= 1) && !defined __UCLIBC__) \
+          || defined __sun)
+    {
+      char *outptr = tmpbuf;
+      size_t outsize = tmpbufsize;
+      size_t res = iconv (cd, NULL, NULL, &outptr, &outsize);
+
+      if (res == (size_t)(-1))
+        return -1;
+      count += outptr - tmpbuf;
+    }
+# endif
+    length = count;
+# undef tmpbuf
+  }
+
+  if (length == 0)
+    {
+      *lengthp = 0;
+      return 0;
+    }
+  if (*resultp != NULL && *lengthp >= length)
+    result = *resultp;
+  else
+    {
+      result = (char *) malloc (length);
+      if (result == NULL)
+        {
+          errno = ENOMEM;
+          return -1;
+        }
+    }
+
+  /* Avoid glibc-2.1 bug and Solaris 2.7-2.9 bug.  */
+# if defined _LIBICONV_VERSION \
+     || !(((__GLIBC__ == 2 && __GLIBC_MINOR__ <= 1) && !defined __UCLIBC__) \
+          || defined __sun)
+  /* Return to the initial state.  */
+  iconv (cd, NULL, NULL, NULL, NULL);
+# endif
+
+  /* Do the conversion for real.  */
+  {
+    const char *inptr = src;
+    size_t insize = srclen;
+    char *outptr = result;
+    size_t outsize = length;
+
+    while (insize > 0)
+      {
+        size_t res = iconv (cd,
+                            (ICONV_CONST char **) &inptr, &insize,
+                            &outptr, &outsize);
+
+        if (res == (size_t)(-1))
+          {
+            if (errno == EINVAL)
+              break;
+            else
+              goto fail;
+          }
+# if !defined _LIBICONV_VERSION && !(defined __GLIBC__ && !defined __UCLIBC__)
+        /* Irix iconv() inserts a NUL byte if it cannot convert.
+           NetBSD iconv() inserts a question mark if it cannot convert.
+           Only GNU libiconv and GNU libc are known to prefer to fail rather
+           than doing a lossy conversion.  */
+        else if (res > 0)
+          {
+            errno = EILSEQ;
+            goto fail;
+          }
+# endif
+      }
+    /* Avoid glibc-2.1 bug and Solaris 2.7 bug.  */
+# if defined _LIBICONV_VERSION \
+     || !(((__GLIBC__ == 2 && __GLIBC_MINOR__ <= 1) && !defined __UCLIBC__) \
+          || defined __sun)
+    {
+      size_t res = iconv (cd, NULL, NULL, &outptr, &outsize);
+
+      if (res == (size_t)(-1))
+        goto fail;
+    }
+# endif
+    if (outsize != 0)
+      abort ();
+  }
+
+  *resultp = result;
+  *lengthp = length;
+
+  return 0;
+
+ fail:
+  {
+    if (result != *resultp)
+      free (result);
+    return -1;
+  }
+# undef tmpbufsize
+}
+
+char *
+str_cd_iconv (const char *src, iconv_t cd)
+{
+  /* For most encodings, a trailing NUL byte in the input will be converted
+     to a trailing NUL byte in the output.  But not for UTF-7.  So that this
+     function is usable for UTF-7, we have to exclude the NUL byte from the
+     conversion and add it by hand afterwards.  */
+# if !defined _LIBICONV_VERSION && !(defined __GLIBC__ && !defined __UCLIBC__)
+  /* Irix iconv() inserts a NUL byte if it cannot convert.
+     NetBSD iconv() inserts a question mark if it cannot convert.
+     Only GNU libiconv and GNU libc are known to prefer to fail rather
+     than doing a lossy conversion.  For other iconv() implementations,
+     we have to look at the number of irreversible conversions returned;
+     but this information is lost when iconv() returns for an E2BIG reason.
+     Therefore we cannot use the second, faster algorithm.  */
+
+  char *result = NULL;
+  size_t length = 0;
+  int retval = mem_cd_iconv (src, strlen (src), cd, &result, &length);
+  char *final_result;
+
+  if (retval < 0)
+    {
+      if (result != NULL)
+        abort ();
+      return NULL;
+    }
+
+  /* Add the terminating NUL byte.  */
+  final_result =
+    (result != NULL ? realloc (result, length + 1) : malloc (length + 1));
+  if (final_result == NULL)
+    {
+      free (result);
+      errno = ENOMEM;
+      return NULL;
+    }
+  final_result[length] = '\0';
+
+  return final_result;
+
+# else
+  /* This algorithm is likely faster than the one above.  But it may produce
+     iconv() returns for an E2BIG reason, when the output size guess is too
+     small.  Therefore it can only be used when we don't need the number of
+     irreversible conversions performed.  */
+  char *result;
+  size_t result_size;
+  size_t length;
+  const char *inptr = src;
+  size_t inbytes_remaining = strlen (src);
+
+  /* Make a guess for the worst-case output size, in order to avoid a
+     realloc.  It's OK if the guess is wrong as long as it is not zero and
+     doesn't lead to an integer overflow.  */
+  result_size = inbytes_remaining;
+  {
+    size_t approx_sqrt_SIZE_MAX = SIZE_MAX >> (sizeof (size_t) * CHAR_BIT / 2);
+    if (result_size <= approx_sqrt_SIZE_MAX / MB_LEN_MAX)
+      result_size *= MB_LEN_MAX;
+  }
+  result_size += 1; /* for the terminating NUL */
+
+  result = (char *) malloc (result_size);
+  if (result == NULL)
+    {
+      errno = ENOMEM;
+      return NULL;
+    }
+
+  /* Avoid glibc-2.1 bug and Solaris 2.7-2.9 bug.  */
+# if defined _LIBICONV_VERSION \
+     || !(((__GLIBC__ == 2 && __GLIBC_MINOR__ <= 1) && !defined __UCLIBC__) \
+          || defined __sun)
+  /* Set to the initial state.  */
+  iconv (cd, NULL, NULL, NULL, NULL);
+# endif
+
+  /* Do the conversion.  */
+  {
+    char *outptr = result;
+    size_t outbytes_remaining = result_size - 1;
+
+    for (;;)
+      {
+        /* Here inptr + inbytes_remaining = src + strlen (src),
+                outptr + outbytes_remaining = result + result_size - 1.  */
+        size_t res = iconv (cd,
+                            (ICONV_CONST char **) &inptr, &inbytes_remaining,
+                            &outptr, &outbytes_remaining);
+
+        if (res == (size_t)(-1))
+          {
+            if (errno == EINVAL)
+              break;
+            else if (errno == E2BIG)
+              {
+                size_t used = outptr - result;
+                size_t newsize = result_size * 2;
+                char *newresult;
+
+                if (!(newsize > result_size))
+                  {
+                    errno = ENOMEM;
+                    goto failed;
+                  }
+                newresult = (char *) realloc (result, newsize);
+                if (newresult == NULL)
+                  {
+                    errno = ENOMEM;
+                    goto failed;
+                  }
+                result = newresult;
+                result_size = newsize;
+                outptr = result + used;
+                outbytes_remaining = result_size - 1 - used;
+              }
+            else
+              goto failed;
+          }
+        else
+          break;
+      }
+    /* Avoid glibc-2.1 bug and Solaris 2.7 bug.  */
+# if defined _LIBICONV_VERSION \
+     || !(((__GLIBC__ == 2 && __GLIBC_MINOR__ <= 1) && !defined __UCLIBC__) \
+          || defined __sun)
+    for (;;)
+      {
+        /* Here outptr + outbytes_remaining = result + result_size - 1.  */
+        size_t res = iconv (cd, NULL, NULL, &outptr, &outbytes_remaining);
+
+        if (res == (size_t)(-1))
+          {
+            if (errno == E2BIG)
+              {
+                size_t used = outptr - result;
+                size_t newsize = result_size * 2;
+                char *newresult;
+
+                if (!(newsize > result_size))
+                  {
+                    errno = ENOMEM;
+                    goto failed;
+                  }
+                newresult = (char *) realloc (result, newsize);
+                if (newresult == NULL)
+                  {
+                    errno = ENOMEM;
+                    goto failed;
+                  }
+                result = newresult;
+                result_size = newsize;
+                outptr = result + used;
+                outbytes_remaining = result_size - 1 - used;
+              }
+            else
+              goto failed;
+          }
+        else
+          break;
+      }
+# endif
+
+    /* Add the terminating NUL byte.  */
+    *outptr++ = '\0';
+
+    length = outptr - result;
+  }
+
+  /* Give away unused memory.  */
+  if (length < result_size)
+    {
+      char *smaller_result = (char *) realloc (result, length);
+
+      if (smaller_result != NULL)
+        result = smaller_result;
+    }
+
+  return result;
+
+ failed:
+  free (result);
+  return NULL;
+
+# endif
+}
+
+#endif
+
+char *
+str_iconv (const char *src, const char *from_codeset, const char *to_codeset)
+{
+  if (*src == '\0' || c_strcasecmp (from_codeset, to_codeset) == 0)
+    {
+      char *result = strdup (src);
+
+      if (result == NULL)
+        errno = ENOMEM;
+      return result;
+    }
+  else
+    {
+#if HAVE_ICONV
+      iconv_t cd;
+      char *result;
+
+      /* Avoid glibc-2.1 bug with EUC-KR.  */
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ <= 1) && !defined __UCLIBC__) \
+     && !defined _LIBICONV_VERSION
+      if (c_strcasecmp (from_codeset, "EUC-KR") == 0
+          || c_strcasecmp (to_codeset, "EUC-KR") == 0)
+        {
+          errno = EINVAL;
+          return NULL;
+        }
+# endif
+      cd = iconv_open (to_codeset, from_codeset);
+      if (cd == (iconv_t) -1)
+        return NULL;
+
+      result = str_cd_iconv (src, cd);
+
+      if (result == NULL)
+        {
+          /* Close cd, but preserve the errno from str_cd_iconv.  */
+          int saved_errno = errno;
+          iconv_close (cd);
+          errno = saved_errno;
+        }
+      else
+        {
+          if (iconv_close (cd) < 0)
+            {
+              free (result);
+              return NULL;
+            }
+        }
+      return result;
+#else
+      /* This is a different error code than if iconv_open existed but didn't
+         support from_codeset and to_codeset, so that the caller can emit
+         an error message such as
+           "iconv() is not supported. Installing GNU libiconv and
+            then reinstalling this package would fix this."  */
+      errno = ENOSYS;
+      return NULL;
+#endif
+    }
+}
diff --git a/src/grep/lib/striconv.h b/src/grep/lib/striconv.h
new file mode 100644
index 0000000..c192ee1
--- /dev/null
+++ b/src/grep/lib/striconv.h
@@ -0,0 +1,77 @@
+/* Charset conversion.
+   Copyright (C) 2001-2004, 2006-2007, 2009-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible and Simon Josefsson.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _STRICONV_H
+#define _STRICONV_H
+
+#include <stdlib.h>
+#if HAVE_ICONV
+#include <iconv.h>
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#if HAVE_ICONV
+
+/* Convert an entire string from one encoding to another, using iconv.
+   The original string is at [SRC,...,SRC+SRCLEN-1].
+   The conversion descriptor is passed as CD.
+   *RESULTP and *LENGTH should initially be a scratch buffer and its size,
+   or *RESULTP can initially be NULL.
+   May erase the contents of the memory at *RESULTP.
+   Return value: 0 if successful, otherwise -1 and errno set.
+   If successful: The resulting string is stored in *RESULTP and its length
+   in *LENGTHP.  *RESULTP is set to a freshly allocated memory block, or is
+   unchanged if no dynamic memory allocation was necessary.  */
+extern int mem_cd_iconv (const char *src, size_t srclen, iconv_t cd,
+                         char **resultp, size_t *lengthp);
+
+/* Convert an entire string from one encoding to another, using iconv.
+   The original string is the NUL-terminated string starting at SRC.
+   The conversion descriptor is passed as CD.  Both the "from" and the "to"
+   encoding must use a single NUL byte at the end of the string (i.e. not
+   UCS-2, UCS-4, UTF-16, UTF-32).
+   Allocate a malloced memory block for the result.
+   Return value: the freshly allocated resulting NUL-terminated string if
+   successful, otherwise NULL and errno set.  */
+extern char * str_cd_iconv (const char *src, iconv_t cd)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
+
+#endif
+
+/* Convert an entire string from one encoding to another, using iconv.
+   The original string is the NUL-terminated string starting at SRC.
+   Both the "from" and the "to" encoding must use a single NUL byte at the
+   end of the string (i.e. not UCS-2, UCS-4, UTF-16, UTF-32).
+   Allocate a malloced memory block for the result.
+   Return value: the freshly allocated resulting NUL-terminated string if
+   successful, otherwise NULL and errno set.  */
+extern char * str_iconv (const char *src,
+                         const char *from_codeset, const char *to_codeset)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _STRICONV_H */
diff --git a/src/grep/lib/string.in.h b/src/grep/lib/string.in.h
new file mode 100644
index 0000000..b043c75
--- /dev/null
+++ b/src/grep/lib/string.in.h
@@ -0,0 +1,1207 @@
+/* A GNU-like <string.h>.
+
+   Copyright (C) 1995-1996, 2001-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined _GL_ALREADY_INCLUDING_STRING_H
+/* Special invocation convention:
+   - On OS X/NetBSD we have a sequence of nested includes
+       <string.h> -> <strings.h> -> "string.h"
+     In this situation system _chk variants due to -D_FORTIFY_SOURCE
+     might be used after any replacements defined here.  */
+
+#@INCLUDE_NEXT@ @NEXT_STRING_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_STRING_H
+
+#define _GL_ALREADY_INCLUDING_STRING_H
+
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_STRING_H@
+
+#undef _GL_ALREADY_INCLUDING_STRING_H
+
+#ifndef _@GUARD_PREFIX@_STRING_H
+#define _@GUARD_PREFIX@_STRING_H
+
+/* NetBSD 5.0 mis-defines NULL.  */
+#include <stddef.h>
+
+/* Get free().  */
+#include <stdlib.h>
+
+/* MirBSD defines mbslen as a macro.  */
+#if @GNULIB_MBSLEN@ && defined __MirBSD__
+# include <wchar.h>
+#endif
+
+/* The __attribute__ feature is available in gcc versions 2.5 and later.
+   The attribute __pure__ was added in gcc 2.96.  */
+#ifndef _GL_ATTRIBUTE_PURE
+# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || defined __clang__
+#  define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+# else
+#  define _GL_ATTRIBUTE_PURE /* empty */
+# endif
+#endif
+
+/* NetBSD 5.0 declares strsignal in <unistd.h>, not in <string.h>.  */
+/* But in any case avoid namespace pollution on glibc systems.  */
+#if (@GNULIB_STRSIGNAL@ || defined GNULIB_POSIXCHECK) && defined __NetBSD__ \
+    && ! defined __GLIBC__
+# include <unistd.h>
+#endif
+
+/* AIX 7.2 declares ffsl and ffsll in <strings.h>, not in <string.h>.  */
+/* But in any case avoid namespace pollution on glibc systems.  */
+#if ((@GNULIB_FFSL@ || @GNULIB_FFSLL@ || defined GNULIB_POSIXCHECK) \
+     && defined _AIX) \
+    && ! defined __GLIBC__
+# include <strings.h>
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
+/* Clear a block of memory.  The compiler will not delete a call to
+   this function, even if the block is dead after the call.  */
+#if @GNULIB_EXPLICIT_BZERO@
+# if ! @HAVE_EXPLICIT_BZERO@
+_GL_FUNCDECL_SYS (explicit_bzero, void,
+                  (void *__dest, size_t __n) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (explicit_bzero, void, (void *__dest, size_t __n));
+_GL_CXXALIASWARN (explicit_bzero);
+#elif defined GNULIB_POSIXCHECK
+# undef explicit_bzero
+# if HAVE_RAW_DECL_EXPLICIT_BZERO
+_GL_WARN_ON_USE (explicit_bzero, "explicit_bzero is unportable - "
+                 "use gnulib module explicit_bzero for portability");
+# endif
+#endif
+
+/* Find the index of the least-significant set bit.  */
+#if @GNULIB_FFSL@
+# if !@HAVE_FFSL@
+_GL_FUNCDECL_SYS (ffsl, int, (long int i));
+# endif
+_GL_CXXALIAS_SYS (ffsl, int, (long int i));
+_GL_CXXALIASWARN (ffsl);
+#elif defined GNULIB_POSIXCHECK
+# undef ffsl
+# if HAVE_RAW_DECL_FFSL
+_GL_WARN_ON_USE (ffsl, "ffsl is not portable - use the ffsl module");
+# endif
+#endif
+
+
+/* Find the index of the least-significant set bit.  */
+#if @GNULIB_FFSLL@
+# if @REPLACE_FFSLL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define ffsll rpl_ffsll
+#  endif
+_GL_FUNCDECL_RPL (ffsll, int, (long long int i));
+_GL_CXXALIAS_RPL (ffsll, int, (long long int i));
+# else
+#  if !@HAVE_FFSLL@
+_GL_FUNCDECL_SYS (ffsll, int, (long long int i));
+#  endif
+_GL_CXXALIAS_SYS (ffsll, int, (long long int i));
+# endif
+_GL_CXXALIASWARN (ffsll);
+#elif defined GNULIB_POSIXCHECK
+# undef ffsll
+# if HAVE_RAW_DECL_FFSLL
+_GL_WARN_ON_USE (ffsll, "ffsll is not portable - use the ffsll module");
+# endif
+#endif
+
+
+#if @GNULIB_MDA_MEMCCPY@
+/* On native Windows, map 'memccpy' to '_memccpy', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::memccpy always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef memccpy
+#   define memccpy _memccpy
+#  endif
+_GL_CXXALIAS_MDA (memccpy, void *,
+                  (void *dest, const void *src, int c, size_t n));
+# else
+_GL_CXXALIAS_SYS (memccpy, void *,
+                  (void *dest, const void *src, int c, size_t n));
+# endif
+_GL_CXXALIASWARN (memccpy);
+#endif
+
+
+/* Return the first instance of C within N bytes of S, or NULL.  */
+#if @GNULIB_MEMCHR@
+# if @REPLACE_MEMCHR@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef memchr
+#   define memchr rpl_memchr
+#  endif
+_GL_FUNCDECL_RPL (memchr, void *, (void const *__s, int __c, size_t __n)
+                                  _GL_ATTRIBUTE_PURE
+                                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (memchr, void *, (void const *__s, int __c, size_t __n));
+# else
+  /* On some systems, this function is defined as an overloaded function:
+       extern "C" { const void * std::memchr (const void *, int, size_t); }
+       extern "C++" { void * std::memchr (void *, int, size_t); }  */
+_GL_CXXALIAS_SYS_CAST2 (memchr,
+                        void *, (void const *__s, int __c, size_t __n),
+                        void const *, (void const *__s, int __c, size_t __n));
+# endif
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+_GL_CXXALIASWARN1 (memchr, void *, (void *__s, int __c, size_t __n));
+_GL_CXXALIASWARN1 (memchr, void const *,
+                   (void const *__s, int __c, size_t __n));
+# elif __GLIBC__ >= 2
+_GL_CXXALIASWARN (memchr);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef memchr
+/* Assume memchr is always declared.  */
+_GL_WARN_ON_USE (memchr, "memchr has platform-specific bugs - "
+                 "use gnulib module memchr for portability" );
+#endif
+
+/* Return the first occurrence of NEEDLE in HAYSTACK.  */
+#if @GNULIB_MEMMEM@
+# if @REPLACE_MEMMEM@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define memmem rpl_memmem
+#  endif
+_GL_FUNCDECL_RPL (memmem, void *,
+                  (void const *__haystack, size_t __haystack_len,
+                   void const *__needle, size_t __needle_len)
+                  _GL_ATTRIBUTE_PURE
+                  _GL_ARG_NONNULL ((1, 3)));
+_GL_CXXALIAS_RPL (memmem, void *,
+                  (void const *__haystack, size_t __haystack_len,
+                   void const *__needle, size_t __needle_len));
+# else
+#  if ! @HAVE_DECL_MEMMEM@
+_GL_FUNCDECL_SYS (memmem, void *,
+                  (void const *__haystack, size_t __haystack_len,
+                   void const *__needle, size_t __needle_len)
+                  _GL_ATTRIBUTE_PURE
+                  _GL_ARG_NONNULL ((1, 3)));
+#  endif
+_GL_CXXALIAS_SYS (memmem, void *,
+                  (void const *__haystack, size_t __haystack_len,
+                   void const *__needle, size_t __needle_len));
+# endif
+_GL_CXXALIASWARN (memmem);
+#elif defined GNULIB_POSIXCHECK
+# undef memmem
+# if HAVE_RAW_DECL_MEMMEM
+_GL_WARN_ON_USE (memmem, "memmem is unportable and often quadratic - "
+                 "use gnulib module memmem-simple for portability, "
+                 "and module memmem for speed" );
+# endif
+#endif
+
+/* Copy N bytes of SRC to DEST, return pointer to bytes after the
+   last written byte.  */
+#if @GNULIB_MEMPCPY@
+# if ! @HAVE_MEMPCPY@
+_GL_FUNCDECL_SYS (mempcpy, void *,
+                  (void *restrict __dest, void const *restrict __src,
+                   size_t __n)
+                  _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (mempcpy, void *,
+                  (void *restrict __dest, void const *restrict __src,
+                   size_t __n));
+_GL_CXXALIASWARN (mempcpy);
+#elif defined GNULIB_POSIXCHECK
+# undef mempcpy
+# if HAVE_RAW_DECL_MEMPCPY
+_GL_WARN_ON_USE (mempcpy, "mempcpy is unportable - "
+                 "use gnulib module mempcpy for portability");
+# endif
+#endif
+
+/* Search backwards through a block for a byte (specified as an int).  */
+#if @GNULIB_MEMRCHR@
+# if ! @HAVE_DECL_MEMRCHR@
+_GL_FUNCDECL_SYS (memrchr, void *, (void const *, int, size_t)
+                                   _GL_ATTRIBUTE_PURE
+                                   _GL_ARG_NONNULL ((1)));
+# endif
+  /* On some systems, this function is defined as an overloaded function:
+       extern "C++" { const void * std::memrchr (const void *, int, size_t); }
+       extern "C++" { void * std::memrchr (void *, int, size_t); }  */
+_GL_CXXALIAS_SYS_CAST2 (memrchr,
+                        void *, (void const *, int, size_t),
+                        void const *, (void const *, int, size_t));
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+_GL_CXXALIASWARN1 (memrchr, void *, (void *, int, size_t));
+_GL_CXXALIASWARN1 (memrchr, void const *, (void const *, int, size_t));
+# else
+_GL_CXXALIASWARN (memrchr);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef memrchr
+# if HAVE_RAW_DECL_MEMRCHR
+_GL_WARN_ON_USE (memrchr, "memrchr is unportable - "
+                 "use gnulib module memrchr for portability");
+# endif
+#endif
+
+/* Find the first occurrence of C in S.  More efficient than
+   memchr(S,C,N), at the expense of undefined behavior if C does not
+   occur within N bytes.  */
+#if @GNULIB_RAWMEMCHR@
+# if ! @HAVE_RAWMEMCHR@
+_GL_FUNCDECL_SYS (rawmemchr, void *, (void const *__s, int __c_in)
+                                     _GL_ATTRIBUTE_PURE
+                                     _GL_ARG_NONNULL ((1)));
+# endif
+  /* On some systems, this function is defined as an overloaded function:
+       extern "C++" { const void * std::rawmemchr (const void *, int); }
+       extern "C++" { void * std::rawmemchr (void *, int); }  */
+_GL_CXXALIAS_SYS_CAST2 (rawmemchr,
+                        void *, (void const *__s, int __c_in),
+                        void const *, (void const *__s, int __c_in));
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+_GL_CXXALIASWARN1 (rawmemchr, void *, (void *__s, int __c_in));
+_GL_CXXALIASWARN1 (rawmemchr, void const *, (void const *__s, int __c_in));
+# else
+_GL_CXXALIASWARN (rawmemchr);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef rawmemchr
+# if HAVE_RAW_DECL_RAWMEMCHR
+_GL_WARN_ON_USE (rawmemchr, "rawmemchr is unportable - "
+                 "use gnulib module rawmemchr for portability");
+# endif
+#endif
+
+/* Copy SRC to DST, returning the address of the terminating '\0' in DST.  */
+#if @GNULIB_STPCPY@
+# if ! @HAVE_STPCPY@
+_GL_FUNCDECL_SYS (stpcpy, char *,
+                  (char *restrict __dst, char const *restrict __src)
+                  _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (stpcpy, char *,
+                  (char *restrict __dst, char const *restrict __src));
+_GL_CXXALIASWARN (stpcpy);
+#elif defined GNULIB_POSIXCHECK
+# undef stpcpy
+# if HAVE_RAW_DECL_STPCPY
+_GL_WARN_ON_USE (stpcpy, "stpcpy is unportable - "
+                 "use gnulib module stpcpy for portability");
+# endif
+#endif
+
+/* Copy no more than N bytes of SRC to DST, returning a pointer past the
+   last non-NUL byte written into DST.  */
+#if @GNULIB_STPNCPY@
+# if @REPLACE_STPNCPY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef stpncpy
+#   define stpncpy rpl_stpncpy
+#  endif
+_GL_FUNCDECL_RPL (stpncpy, char *,
+                  (char *restrict __dst, char const *restrict __src,
+                   size_t __n)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (stpncpy, char *,
+                  (char *restrict __dst, char const *restrict __src,
+                   size_t __n));
+# else
+#  if ! @HAVE_STPNCPY@
+_GL_FUNCDECL_SYS (stpncpy, char *,
+                  (char *restrict __dst, char const *restrict __src,
+                   size_t __n)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (stpncpy, char *,
+                  (char *restrict __dst, char const *restrict __src,
+                   size_t __n));
+# endif
+_GL_CXXALIASWARN (stpncpy);
+#elif defined GNULIB_POSIXCHECK
+# undef stpncpy
+# if HAVE_RAW_DECL_STPNCPY
+_GL_WARN_ON_USE (stpncpy, "stpncpy is unportable - "
+                 "use gnulib module stpncpy for portability");
+# endif
+#endif
+
+#if defined GNULIB_POSIXCHECK
+/* strchr() does not work with multibyte strings if the locale encoding is
+   GB18030 and the character to be searched is a digit.  */
+# undef strchr
+/* Assume strchr is always declared.  */
+_GL_WARN_ON_USE_CXX (strchr,
+                     const char *, char *, (const char *, int),
+                     "strchr cannot work correctly on character strings "
+                     "in some multibyte locales - "
+                     "use mbschr if you care about internationalization");
+#endif
+
+/* Find the first occurrence of C in S or the final NUL byte.  */
+#if @GNULIB_STRCHRNUL@
+# if @REPLACE_STRCHRNUL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define strchrnul rpl_strchrnul
+#  endif
+_GL_FUNCDECL_RPL (strchrnul, char *, (const char *__s, int __c_in)
+                                     _GL_ATTRIBUTE_PURE
+                                     _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strchrnul, char *,
+                  (const char *str, int ch));
+# else
+#  if ! @HAVE_STRCHRNUL@
+_GL_FUNCDECL_SYS (strchrnul, char *, (char const *__s, int __c_in)
+                                     _GL_ATTRIBUTE_PURE
+                                     _GL_ARG_NONNULL ((1)));
+#  endif
+  /* On some systems, this function is defined as an overloaded function:
+       extern "C++" { const char * std::strchrnul (const char *, int); }
+       extern "C++" { char * std::strchrnul (char *, int); }  */
+_GL_CXXALIAS_SYS_CAST2 (strchrnul,
+                        char *, (char const *__s, int __c_in),
+                        char const *, (char const *__s, int __c_in));
+# endif
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+_GL_CXXALIASWARN1 (strchrnul, char *, (char *__s, int __c_in));
+_GL_CXXALIASWARN1 (strchrnul, char const *, (char const *__s, int __c_in));
+# else
+_GL_CXXALIASWARN (strchrnul);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strchrnul
+# if HAVE_RAW_DECL_STRCHRNUL
+_GL_WARN_ON_USE (strchrnul, "strchrnul is unportable - "
+                 "use gnulib module strchrnul for portability");
+# endif
+#endif
+
+/* Duplicate S, returning an identical malloc'd string.  */
+#if @GNULIB_STRDUP@
+# if @REPLACE_STRDUP@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strdup
+#   define strdup rpl_strdup
+#  endif
+_GL_FUNCDECL_RPL (strdup, char *,
+                  (char const *__s)
+                  _GL_ARG_NONNULL ((1))
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+_GL_CXXALIAS_RPL (strdup, char *, (char const *__s));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strdup
+#   define strdup _strdup
+#  endif
+_GL_CXXALIAS_MDA (strdup, char *, (char const *__s));
+# else
+#  if defined __cplusplus && defined GNULIB_NAMESPACE && defined strdup
+    /* strdup exists as a function and as a macro.  Get rid of the macro.  */
+#   undef strdup
+#  endif
+#  if (!@HAVE_DECL_STRDUP@ || __GNUC__ >= 11) && !defined strdup
+_GL_FUNCDECL_SYS (strdup, char *,
+                  (char const *__s)
+                  _GL_ARG_NONNULL ((1))
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+#  endif
+_GL_CXXALIAS_SYS (strdup, char *, (char const *__s));
+# endif
+_GL_CXXALIASWARN (strdup);
+#else
+# if __GNUC__ >= 11 && !defined strdup
+/* For -Wmismatched-dealloc: Associate strdup with free or rpl_free.  */
+_GL_FUNCDECL_SYS (strdup, char *,
+                  (char const *__s)
+                  _GL_ARG_NONNULL ((1))
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef strdup
+#  if HAVE_RAW_DECL_STRDUP
+_GL_WARN_ON_USE (strdup, "strdup is unportable - "
+                 "use gnulib module strdup for portability");
+#  endif
+# elif @GNULIB_MDA_STRDUP@
+/* On native Windows, map 'creat' to '_creat', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::strdup always.  */
+#  if defined _WIN32 && !defined __CYGWIN__
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef strdup
+#    define strdup _strdup
+#   endif
+_GL_CXXALIAS_MDA (strdup, char *, (char const *__s));
+#  else
+#   if defined __cplusplus && defined GNULIB_NAMESPACE && defined strdup
+#    undef strdup
+#   endif
+_GL_CXXALIAS_SYS (strdup, char *, (char const *__s));
+#  endif
+_GL_CXXALIASWARN (strdup);
+# endif
+#endif
+
+/* Append no more than N characters from SRC onto DEST.  */
+#if @GNULIB_STRNCAT@
+# if @REPLACE_STRNCAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strncat
+#   define strncat rpl_strncat
+#  endif
+_GL_FUNCDECL_RPL (strncat, char *,
+                  (char *restrict dest, const char *restrict src, size_t n)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (strncat, char *,
+                  (char *restrict dest, const char *restrict src, size_t n));
+# else
+_GL_CXXALIAS_SYS (strncat, char *,
+                  (char *restrict dest, const char *restrict src, size_t n));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (strncat);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strncat
+# if HAVE_RAW_DECL_STRNCAT
+_GL_WARN_ON_USE (strncat, "strncat is unportable - "
+                 "use gnulib module strncat for portability");
+# endif
+#endif
+
+/* Return a newly allocated copy of at most N bytes of STRING.  */
+#if @GNULIB_STRNDUP@
+# if @REPLACE_STRNDUP@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strndup
+#   define strndup rpl_strndup
+#  endif
+_GL_FUNCDECL_RPL (strndup, char *, (char const *__s, size_t __n)
+                                   _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strndup, char *, (char const *__s, size_t __n));
+# else
+#  if ! @HAVE_DECL_STRNDUP@
+_GL_FUNCDECL_SYS (strndup, char *, (char const *__s, size_t __n)
+                                   _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (strndup, char *, (char const *__s, size_t __n));
+# endif
+_GL_CXXALIASWARN (strndup);
+#elif defined GNULIB_POSIXCHECK
+# undef strndup
+# if HAVE_RAW_DECL_STRNDUP
+_GL_WARN_ON_USE (strndup, "strndup is unportable - "
+                 "use gnulib module strndup for portability");
+# endif
+#endif
+
+/* Find the length (number of bytes) of STRING, but scan at most
+   MAXLEN bytes.  If no '\0' terminator is found in that many bytes,
+   return MAXLEN.  */
+#if @GNULIB_STRNLEN@
+# if @REPLACE_STRNLEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strnlen
+#   define strnlen rpl_strnlen
+#  endif
+_GL_FUNCDECL_RPL (strnlen, size_t, (char const *__s, size_t __maxlen)
+                                   _GL_ATTRIBUTE_PURE
+                                   _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strnlen, size_t, (char const *__s, size_t __maxlen));
+# else
+#  if ! @HAVE_DECL_STRNLEN@
+_GL_FUNCDECL_SYS (strnlen, size_t, (char const *__s, size_t __maxlen)
+                                   _GL_ATTRIBUTE_PURE
+                                   _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (strnlen, size_t, (char const *__s, size_t __maxlen));
+# endif
+_GL_CXXALIASWARN (strnlen);
+#elif defined GNULIB_POSIXCHECK
+# undef strnlen
+# if HAVE_RAW_DECL_STRNLEN
+_GL_WARN_ON_USE (strnlen, "strnlen is unportable - "
+                 "use gnulib module strnlen for portability");
+# endif
+#endif
+
+#if defined GNULIB_POSIXCHECK
+/* strcspn() assumes the second argument is a list of single-byte characters.
+   Even in this simple case, it does not work with multibyte strings if the
+   locale encoding is GB18030 and one of the characters to be searched is a
+   digit.  */
+# undef strcspn
+/* Assume strcspn is always declared.  */
+_GL_WARN_ON_USE (strcspn, "strcspn cannot work correctly on character strings "
+                 "in multibyte locales - "
+                 "use mbscspn if you care about internationalization");
+#endif
+
+/* Find the first occurrence in S of any character in ACCEPT.  */
+#if @GNULIB_STRPBRK@
+# if ! @HAVE_STRPBRK@
+_GL_FUNCDECL_SYS (strpbrk, char *, (char const *__s, char const *__accept)
+                                   _GL_ATTRIBUTE_PURE
+                                   _GL_ARG_NONNULL ((1, 2)));
+# endif
+  /* On some systems, this function is defined as an overloaded function:
+       extern "C" { const char * strpbrk (const char *, const char *); }
+       extern "C++" { char * strpbrk (char *, const char *); }  */
+_GL_CXXALIAS_SYS_CAST2 (strpbrk,
+                        char *, (char const *__s, char const *__accept),
+                        const char *, (char const *__s, char const *__accept));
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+_GL_CXXALIASWARN1 (strpbrk, char *, (char *__s, char const *__accept));
+_GL_CXXALIASWARN1 (strpbrk, char const *,
+                   (char const *__s, char const *__accept));
+# elif __GLIBC__ >= 2
+_GL_CXXALIASWARN (strpbrk);
+# endif
+# if defined GNULIB_POSIXCHECK
+/* strpbrk() assumes the second argument is a list of single-byte characters.
+   Even in this simple case, it does not work with multibyte strings if the
+   locale encoding is GB18030 and one of the characters to be searched is a
+   digit.  */
+#  undef strpbrk
+_GL_WARN_ON_USE_CXX (strpbrk,
+                     const char *, char *, (const char *, const char *),
+                     "strpbrk cannot work correctly on character strings "
+                     "in multibyte locales - "
+                     "use mbspbrk if you care about internationalization");
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strpbrk
+# if HAVE_RAW_DECL_STRPBRK
+_GL_WARN_ON_USE_CXX (strpbrk,
+                     const char *, char *, (const char *, const char *),
+                     "strpbrk is unportable - "
+                     "use gnulib module strpbrk for portability");
+# endif
+#endif
+
+#if defined GNULIB_POSIXCHECK
+/* strspn() assumes the second argument is a list of single-byte characters.
+   Even in this simple case, it cannot work with multibyte strings.  */
+# undef strspn
+/* Assume strspn is always declared.  */
+_GL_WARN_ON_USE (strspn, "strspn cannot work correctly on character strings "
+                 "in multibyte locales - "
+                 "use mbsspn if you care about internationalization");
+#endif
+
+#if defined GNULIB_POSIXCHECK
+/* strrchr() does not work with multibyte strings if the locale encoding is
+   GB18030 and the character to be searched is a digit.  */
+# undef strrchr
+/* Assume strrchr is always declared.  */
+_GL_WARN_ON_USE_CXX (strrchr,
+                     const char *, char *, (const char *, int),
+                     "strrchr cannot work correctly on character strings "
+                     "in some multibyte locales - "
+                     "use mbsrchr if you care about internationalization");
+#endif
+
+/* Search the next delimiter (char listed in DELIM) starting at *STRINGP.
+   If one is found, overwrite it with a NUL, and advance *STRINGP
+   to point to the next char after it.  Otherwise, set *STRINGP to NULL.
+   If *STRINGP was already NULL, nothing happens.
+   Return the old value of *STRINGP.
+
+   This is a variant of strtok() that is multithread-safe and supports
+   empty fields.
+
+   Caveat: It modifies the original string.
+   Caveat: These functions cannot be used on constant strings.
+   Caveat: The identity of the delimiting character is lost.
+   Caveat: It doesn't work with multibyte strings unless all of the delimiter
+           characters are ASCII characters < 0x30.
+
+   See also strtok_r().  */
+#if @GNULIB_STRSEP@
+# if ! @HAVE_STRSEP@
+_GL_FUNCDECL_SYS (strsep, char *,
+                  (char **restrict __stringp, char const *restrict __delim)
+                  _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (strsep, char *,
+                  (char **restrict __stringp, char const *restrict __delim));
+_GL_CXXALIASWARN (strsep);
+# if defined GNULIB_POSIXCHECK
+#  undef strsep
+_GL_WARN_ON_USE (strsep, "strsep cannot work correctly on character strings "
+                 "in multibyte locales - "
+                 "use mbssep if you care about internationalization");
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strsep
+# if HAVE_RAW_DECL_STRSEP
+_GL_WARN_ON_USE (strsep, "strsep is unportable - "
+                 "use gnulib module strsep for portability");
+# endif
+#endif
+
+#if @GNULIB_STRSTR@
+# if @REPLACE_STRSTR@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define strstr rpl_strstr
+#  endif
+_GL_FUNCDECL_RPL (strstr, char *, (const char *haystack, const char *needle)
+                                  _GL_ATTRIBUTE_PURE
+                                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (strstr, char *, (const char *haystack, const char *needle));
+# else
+  /* On some systems, this function is defined as an overloaded function:
+       extern "C++" { const char * strstr (const char *, const char *); }
+       extern "C++" { char * strstr (char *, const char *); }  */
+_GL_CXXALIAS_SYS_CAST2 (strstr,
+                        char *, (const char *haystack, const char *needle),
+                        const char *, (const char *haystack, const char *needle));
+# endif
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+_GL_CXXALIASWARN1 (strstr, char *, (char *haystack, const char *needle));
+_GL_CXXALIASWARN1 (strstr, const char *,
+                   (const char *haystack, const char *needle));
+# elif __GLIBC__ >= 2
+_GL_CXXALIASWARN (strstr);
+# endif
+#elif defined GNULIB_POSIXCHECK
+/* strstr() does not work with multibyte strings if the locale encoding is
+   different from UTF-8:
+   POSIX says that it operates on "strings", and "string" in POSIX is defined
+   as a sequence of bytes, not of characters.  */
+# undef strstr
+/* Assume strstr is always declared.  */
+_GL_WARN_ON_USE (strstr, "strstr is quadratic on many systems, and cannot "
+                 "work correctly on character strings in most "
+                 "multibyte locales - "
+                 "use mbsstr if you care about internationalization, "
+                 "or use strstr if you care about speed");
+#endif
+
+/* Find the first occurrence of NEEDLE in HAYSTACK, using case-insensitive
+   comparison.  */
+#if @GNULIB_STRCASESTR@
+# if @REPLACE_STRCASESTR@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define strcasestr rpl_strcasestr
+#  endif
+_GL_FUNCDECL_RPL (strcasestr, char *,
+                  (const char *haystack, const char *needle)
+                  _GL_ATTRIBUTE_PURE
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (strcasestr, char *,
+                  (const char *haystack, const char *needle));
+# else
+#  if ! @HAVE_STRCASESTR@
+_GL_FUNCDECL_SYS (strcasestr, char *,
+                  (const char *haystack, const char *needle)
+                  _GL_ATTRIBUTE_PURE
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+  /* On some systems, this function is defined as an overloaded function:
+       extern "C++" { const char * strcasestr (const char *, const char *); }
+       extern "C++" { char * strcasestr (char *, const char *); }  */
+_GL_CXXALIAS_SYS_CAST2 (strcasestr,
+                        char *, (const char *haystack, const char *needle),
+                        const char *, (const char *haystack, const char *needle));
+# endif
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+_GL_CXXALIASWARN1 (strcasestr, char *, (char *haystack, const char *needle));
+_GL_CXXALIASWARN1 (strcasestr, const char *,
+                   (const char *haystack, const char *needle));
+# else
+_GL_CXXALIASWARN (strcasestr);
+# endif
+#elif defined GNULIB_POSIXCHECK
+/* strcasestr() does not work with multibyte strings:
+   It is a glibc extension, and glibc implements it only for unibyte
+   locales.  */
+# undef strcasestr
+# if HAVE_RAW_DECL_STRCASESTR
+_GL_WARN_ON_USE (strcasestr, "strcasestr does work correctly on character "
+                 "strings in multibyte locales - "
+                 "use mbscasestr if you care about "
+                 "internationalization, or use c-strcasestr if you want "
+                 "a locale independent function");
+# endif
+#endif
+
+/* Parse S into tokens separated by characters in DELIM.
+   If S is NULL, the saved pointer in SAVE_PTR is used as
+   the next starting point.  For example:
+        char s[] = "-abc-=-def";
+        char *sp;
+        x = strtok_r(s, "-", &sp);      // x = "abc", sp = "=-def"
+        x = strtok_r(NULL, "-=", &sp);  // x = "def", sp = NULL
+        x = strtok_r(NULL, "=", &sp);   // x = NULL
+                // s = "abc\0-def\0"
+
+   This is a variant of strtok() that is multithread-safe.
+
+   For the POSIX documentation for this function, see:
+   https://pubs.opengroup.org/onlinepubs/9699919799/functions/strtok.html
+
+   Caveat: It modifies the original string.
+   Caveat: These functions cannot be used on constant strings.
+   Caveat: The identity of the delimiting character is lost.
+   Caveat: It doesn't work with multibyte strings unless all of the delimiter
+           characters are ASCII characters < 0x30.
+
+   See also strsep().  */
+#if @GNULIB_STRTOK_R@
+# if @REPLACE_STRTOK_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strtok_r
+#   define strtok_r rpl_strtok_r
+#  endif
+_GL_FUNCDECL_RPL (strtok_r, char *,
+                  (char *restrict s, char const *restrict delim,
+                   char **restrict save_ptr)
+                  _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_RPL (strtok_r, char *,
+                  (char *restrict s, char const *restrict delim,
+                   char **restrict save_ptr));
+# else
+#  if @UNDEFINE_STRTOK_R@ || defined GNULIB_POSIXCHECK
+#   undef strtok_r
+#  endif
+#  if ! @HAVE_DECL_STRTOK_R@
+_GL_FUNCDECL_SYS (strtok_r, char *,
+                  (char *restrict s, char const *restrict delim,
+                   char **restrict save_ptr)
+                  _GL_ARG_NONNULL ((2, 3)));
+#  endif
+_GL_CXXALIAS_SYS (strtok_r, char *,
+                  (char *restrict s, char const *restrict delim,
+                   char **restrict save_ptr));
+# endif
+_GL_CXXALIASWARN (strtok_r);
+# if defined GNULIB_POSIXCHECK
+_GL_WARN_ON_USE (strtok_r, "strtok_r cannot work correctly on character "
+                 "strings in multibyte locales - "
+                 "use mbstok_r if you care about internationalization");
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strtok_r
+# if HAVE_RAW_DECL_STRTOK_R
+_GL_WARN_ON_USE (strtok_r, "strtok_r is unportable - "
+                 "use gnulib module strtok_r for portability");
+# endif
+#endif
+
+
+/* The following functions are not specified by POSIX.  They are gnulib
+   extensions.  */
+
+#if @GNULIB_MBSLEN@
+/* Return the number of multibyte characters in the character string STRING.
+   This considers multibyte characters, unlike strlen, which counts bytes.  */
+# ifdef __MirBSD__  /* MirBSD defines mbslen as a macro.  Override it.  */
+#  undef mbslen
+# endif
+# if @HAVE_MBSLEN@  /* AIX, OSF/1, MirBSD define mbslen already in libc.  */
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define mbslen rpl_mbslen
+#  endif
+_GL_FUNCDECL_RPL (mbslen, size_t, (const char *string)
+                                  _GL_ATTRIBUTE_PURE
+                                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (mbslen, size_t, (const char *string));
+# else
+_GL_FUNCDECL_SYS (mbslen, size_t, (const char *string)
+                                  _GL_ATTRIBUTE_PURE
+                                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_SYS (mbslen, size_t, (const char *string));
+# endif
+_GL_CXXALIASWARN (mbslen);
+#endif
+
+#if @GNULIB_MBSNLEN@
+/* Return the number of multibyte characters in the character string starting
+   at STRING and ending at STRING + LEN.  */
+_GL_EXTERN_C size_t mbsnlen (const char *string, size_t len)
+     _GL_ATTRIBUTE_PURE
+     _GL_ARG_NONNULL ((1));
+#endif
+
+#if @GNULIB_MBSCHR@
+/* Locate the first single-byte character C in the character string STRING,
+   and return a pointer to it.  Return NULL if C is not found in STRING.
+   Unlike strchr(), this function works correctly in multibyte locales with
+   encodings such as GB18030.  */
+# if defined __hpux
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define mbschr rpl_mbschr /* avoid collision with HP-UX function */
+#  endif
+_GL_FUNCDECL_RPL (mbschr, char *, (const char *string, int c)
+                                  _GL_ATTRIBUTE_PURE
+                                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (mbschr, char *, (const char *string, int c));
+# else
+_GL_FUNCDECL_SYS (mbschr, char *, (const char *string, int c)
+                                  _GL_ATTRIBUTE_PURE
+                                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_SYS (mbschr, char *, (const char *string, int c));
+# endif
+_GL_CXXALIASWARN (mbschr);
+#endif
+
+#if @GNULIB_MBSRCHR@
+/* Locate the last single-byte character C in the character string STRING,
+   and return a pointer to it.  Return NULL if C is not found in STRING.
+   Unlike strrchr(), this function works correctly in multibyte locales with
+   encodings such as GB18030.  */
+# if defined __hpux || defined __INTERIX
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define mbsrchr rpl_mbsrchr /* avoid collision with system function */
+#  endif
+_GL_FUNCDECL_RPL (mbsrchr, char *, (const char *string, int c)
+                                   _GL_ATTRIBUTE_PURE
+                                   _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (mbsrchr, char *, (const char *string, int c));
+# else
+_GL_FUNCDECL_SYS (mbsrchr, char *, (const char *string, int c)
+                                   _GL_ATTRIBUTE_PURE
+                                   _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_SYS (mbsrchr, char *, (const char *string, int c));
+# endif
+_GL_CXXALIASWARN (mbsrchr);
+#endif
+
+#if @GNULIB_MBSSTR@
+/* Find the first occurrence of the character string NEEDLE in the character
+   string HAYSTACK.  Return NULL if NEEDLE is not found in HAYSTACK.
+   Unlike strstr(), this function works correctly in multibyte locales with
+   encodings different from UTF-8.  */
+_GL_EXTERN_C char * mbsstr (const char *haystack, const char *needle)
+     _GL_ATTRIBUTE_PURE
+     _GL_ARG_NONNULL ((1, 2));
+#endif
+
+#if @GNULIB_MBSCASECMP@
+/* Compare the character strings S1 and S2, ignoring case, returning less than,
+   equal to or greater than zero if S1 is lexicographically less than, equal to
+   or greater than S2.
+   Note: This function may, in multibyte locales, return 0 for strings of
+   different lengths!
+   Unlike strcasecmp(), this function works correctly in multibyte locales.  */
+_GL_EXTERN_C int mbscasecmp (const char *s1, const char *s2)
+     _GL_ATTRIBUTE_PURE
+     _GL_ARG_NONNULL ((1, 2));
+#endif
+
+#if @GNULIB_MBSNCASECMP@
+/* Compare the initial segment of the character string S1 consisting of at most
+   N characters with the initial segment of the character string S2 consisting
+   of at most N characters, ignoring case, returning less than, equal to or
+   greater than zero if the initial segment of S1 is lexicographically less
+   than, equal to or greater than the initial segment of S2.
+   Note: This function may, in multibyte locales, return 0 for initial segments
+   of different lengths!
+   Unlike strncasecmp(), this function works correctly in multibyte locales.
+   But beware that N is not a byte count but a character count!  */
+_GL_EXTERN_C int mbsncasecmp (const char *s1, const char *s2, size_t n)
+     _GL_ATTRIBUTE_PURE
+     _GL_ARG_NONNULL ((1, 2));
+#endif
+
+#if @GNULIB_MBSPCASECMP@
+/* Compare the initial segment of the character string STRING consisting of
+   at most mbslen (PREFIX) characters with the character string PREFIX,
+   ignoring case.  If the two match, return a pointer to the first byte
+   after this prefix in STRING.  Otherwise, return NULL.
+   Note: This function may, in multibyte locales, return non-NULL if STRING
+   is of smaller length than PREFIX!
+   Unlike strncasecmp(), this function works correctly in multibyte
+   locales.  */
+_GL_EXTERN_C char * mbspcasecmp (const char *string, const char *prefix)
+     _GL_ATTRIBUTE_PURE
+     _GL_ARG_NONNULL ((1, 2));
+#endif
+
+#if @GNULIB_MBSCASESTR@
+/* Find the first occurrence of the character string NEEDLE in the character
+   string HAYSTACK, using case-insensitive comparison.
+   Note: This function may, in multibyte locales, return success even if
+   strlen (haystack) < strlen (needle) !
+   Unlike strcasestr(), this function works correctly in multibyte locales.  */
+_GL_EXTERN_C char * mbscasestr (const char *haystack, const char *needle)
+     _GL_ATTRIBUTE_PURE
+     _GL_ARG_NONNULL ((1, 2));
+#endif
+
+#if @GNULIB_MBSCSPN@
+/* Find the first occurrence in the character string STRING of any character
+   in the character string ACCEPT.  Return the number of bytes from the
+   beginning of the string to this occurrence, or to the end of the string
+   if none exists.
+   Unlike strcspn(), this function works correctly in multibyte locales.  */
+_GL_EXTERN_C size_t mbscspn (const char *string, const char *accept)
+     _GL_ATTRIBUTE_PURE
+     _GL_ARG_NONNULL ((1, 2));
+#endif
+
+#if @GNULIB_MBSPBRK@
+/* Find the first occurrence in the character string STRING of any character
+   in the character string ACCEPT.  Return the pointer to it, or NULL if none
+   exists.
+   Unlike strpbrk(), this function works correctly in multibyte locales.  */
+# if defined __hpux
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define mbspbrk rpl_mbspbrk /* avoid collision with HP-UX function */
+#  endif
+_GL_FUNCDECL_RPL (mbspbrk, char *, (const char *string, const char *accept)
+                                   _GL_ATTRIBUTE_PURE
+                                   _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (mbspbrk, char *, (const char *string, const char *accept));
+# else
+_GL_FUNCDECL_SYS (mbspbrk, char *, (const char *string, const char *accept)
+                                   _GL_ATTRIBUTE_PURE
+                                   _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_SYS (mbspbrk, char *, (const char *string, const char *accept));
+# endif
+_GL_CXXALIASWARN (mbspbrk);
+#endif
+
+#if @GNULIB_MBSSPN@
+/* Find the first occurrence in the character string STRING of any character
+   not in the character string REJECT.  Return the number of bytes from the
+   beginning of the string to this occurrence, or to the end of the string
+   if none exists.
+   Unlike strspn(), this function works correctly in multibyte locales.  */
+_GL_EXTERN_C size_t mbsspn (const char *string, const char *reject)
+     _GL_ATTRIBUTE_PURE
+     _GL_ARG_NONNULL ((1, 2));
+#endif
+
+#if @GNULIB_MBSSEP@
+/* Search the next delimiter (multibyte character listed in the character
+   string DELIM) starting at the character string *STRINGP.
+   If one is found, overwrite it with a NUL, and advance *STRINGP to point
+   to the next multibyte character after it.  Otherwise, set *STRINGP to NULL.
+   If *STRINGP was already NULL, nothing happens.
+   Return the old value of *STRINGP.
+
+   This is a variant of mbstok_r() that supports empty fields.
+
+   Caveat: It modifies the original string.
+   Caveat: These functions cannot be used on constant strings.
+   Caveat: The identity of the delimiting character is lost.
+
+   See also mbstok_r().  */
+_GL_EXTERN_C char * mbssep (char **stringp, const char *delim)
+     _GL_ARG_NONNULL ((1, 2));
+#endif
+
+#if @GNULIB_MBSTOK_R@
+/* Parse the character string STRING into tokens separated by characters in
+   the character string DELIM.
+   If STRING is NULL, the saved pointer in SAVE_PTR is used as
+   the next starting point.  For example:
+        char s[] = "-abc-=-def";
+        char *sp;
+        x = mbstok_r(s, "-", &sp);      // x = "abc", sp = "=-def"
+        x = mbstok_r(NULL, "-=", &sp);  // x = "def", sp = NULL
+        x = mbstok_r(NULL, "=", &sp);   // x = NULL
+                // s = "abc\0-def\0"
+
+   Caveat: It modifies the original string.
+   Caveat: These functions cannot be used on constant strings.
+   Caveat: The identity of the delimiting character is lost.
+
+   See also mbssep().  */
+_GL_EXTERN_C char * mbstok_r (char *restrict string, const char *delim,
+                              char **save_ptr)
+     _GL_ARG_NONNULL ((2, 3));
+#endif
+
+/* Map any int, typically from errno, into an error message.  */
+#if @GNULIB_STRERROR@
+# if @REPLACE_STRERROR@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strerror
+#   define strerror rpl_strerror
+#  endif
+_GL_FUNCDECL_RPL (strerror, char *, (int));
+_GL_CXXALIAS_RPL (strerror, char *, (int));
+# else
+_GL_CXXALIAS_SYS (strerror, char *, (int));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (strerror);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strerror
+/* Assume strerror is always declared.  */
+_GL_WARN_ON_USE (strerror, "strerror is unportable - "
+                 "use gnulib module strerror to guarantee non-NULL result");
+#endif
+
+/* Map any int, typically from errno, into an error message.  Multithread-safe.
+   Uses the POSIX declaration, not the glibc declaration.  */
+#if @GNULIB_STRERROR_R@
+# if @REPLACE_STRERROR_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strerror_r
+#   define strerror_r rpl_strerror_r
+#  endif
+_GL_FUNCDECL_RPL (strerror_r, int, (int errnum, char *buf, size_t buflen)
+                                   _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (strerror_r, int, (int errnum, char *buf, size_t buflen));
+# else
+#  if !@HAVE_DECL_STRERROR_R@
+_GL_FUNCDECL_SYS (strerror_r, int, (int errnum, char *buf, size_t buflen)
+                                   _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (strerror_r, int, (int errnum, char *buf, size_t buflen));
+# endif
+# if @HAVE_DECL_STRERROR_R@
+_GL_CXXALIASWARN (strerror_r);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strerror_r
+# if HAVE_RAW_DECL_STRERROR_R
+_GL_WARN_ON_USE (strerror_r, "strerror_r is unportable - "
+                 "use gnulib module strerror_r-posix for portability");
+# endif
+#endif
+
+/* Return the name of the system error code ERRNUM.  */
+#if @GNULIB_STRERRORNAME_NP@
+# if @REPLACE_STRERRORNAME_NP@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strerrorname_np
+#   define strerrorname_np rpl_strerrorname_np
+#  endif
+_GL_FUNCDECL_RPL (strerrorname_np, const char *, (int errnum));
+_GL_CXXALIAS_RPL (strerrorname_np, const char *, (int errnum));
+# else
+#  if !@HAVE_STRERRORNAME_NP@
+_GL_FUNCDECL_SYS (strerrorname_np, const char *, (int errnum));
+#  endif
+_GL_CXXALIAS_SYS (strerrorname_np, const char *, (int errnum));
+# endif
+_GL_CXXALIASWARN (strerrorname_np);
+#elif defined GNULIB_POSIXCHECK
+# undef strerrorname_np
+# if HAVE_RAW_DECL_STRERRORNAME_NP
+_GL_WARN_ON_USE (strerrorname_np, "strerrorname_np is unportable - "
+                 "use gnulib module strerrorname_np for portability");
+# endif
+#endif
+
+/* Return an abbreviation string for the signal number SIG.  */
+#if @GNULIB_SIGABBREV_NP@
+# if ! @HAVE_SIGABBREV_NP@
+_GL_FUNCDECL_SYS (sigabbrev_np, const char *, (int sig));
+# endif
+_GL_CXXALIAS_SYS (sigabbrev_np, const char *, (int sig));
+_GL_CXXALIASWARN (sigabbrev_np);
+#elif defined GNULIB_POSIXCHECK
+# undef sigabbrev_np
+# if HAVE_RAW_DECL_SIGABBREV_NP
+_GL_WARN_ON_USE (sigabbrev_np, "sigabbrev_np is unportable - "
+                 "use gnulib module sigabbrev_np for portability");
+# endif
+#endif
+
+/* Return an English description string for the signal number SIG.  */
+#if @GNULIB_SIGDESCR_NP@
+# if ! @HAVE_SIGDESCR_NP@
+_GL_FUNCDECL_SYS (sigdescr_np, const char *, (int sig));
+# endif
+_GL_CXXALIAS_SYS (sigdescr_np, const char *, (int sig));
+_GL_CXXALIASWARN (sigdescr_np);
+#elif defined GNULIB_POSIXCHECK
+# undef sigdescr_np
+# if HAVE_RAW_DECL_SIGDESCR_NP
+_GL_WARN_ON_USE (sigdescr_np, "sigdescr_np is unportable - "
+                 "use gnulib module sigdescr_np for portability");
+# endif
+#endif
+
+#if @GNULIB_STRSIGNAL@
+# if @REPLACE_STRSIGNAL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define strsignal rpl_strsignal
+#  endif
+_GL_FUNCDECL_RPL (strsignal, char *, (int __sig));
+_GL_CXXALIAS_RPL (strsignal, char *, (int __sig));
+# else
+#  if ! @HAVE_DECL_STRSIGNAL@
+_GL_FUNCDECL_SYS (strsignal, char *, (int __sig));
+#  endif
+/* Need to cast, because on Cygwin 1.5.x systems, the return type is
+   'const char *'.  */
+_GL_CXXALIAS_SYS_CAST (strsignal, char *, (int __sig));
+# endif
+_GL_CXXALIASWARN (strsignal);
+#elif defined GNULIB_POSIXCHECK
+# undef strsignal
+# if HAVE_RAW_DECL_STRSIGNAL
+_GL_WARN_ON_USE (strsignal, "strsignal is unportable - "
+                 "use gnulib module strsignal for portability");
+# endif
+#endif
+
+#if @GNULIB_STRVERSCMP@
+# if !@HAVE_STRVERSCMP@
+_GL_FUNCDECL_SYS (strverscmp, int, (const char *, const char *)
+                                   _GL_ATTRIBUTE_PURE
+                                   _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (strverscmp, int, (const char *, const char *));
+_GL_CXXALIASWARN (strverscmp);
+#elif defined GNULIB_POSIXCHECK
+# undef strverscmp
+# if HAVE_RAW_DECL_STRVERSCMP
+_GL_WARN_ON_USE (strverscmp, "strverscmp is unportable - "
+                 "use gnulib module strverscmp for portability");
+# endif
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_STRING_H */
+#endif /* _@GUARD_PREFIX@_STRING_H */
+#endif
diff --git a/src/grep/lib/stripslash.c b/src/grep/lib/stripslash.c
new file mode 100644
index 0000000..99bfbe6
--- /dev/null
+++ b/src/grep/lib/stripslash.c
@@ -0,0 +1,45 @@
+/* stripslash.c -- remove redundant trailing slashes from a file name
+
+   Copyright (C) 1990, 2001, 2003-2006, 2009-2021 Free Software Foundation,
+   Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "dirname.h"
+
+/* Remove trailing slashes from FILE.  Return true if a trailing slash
+   was removed.  This is useful when using file name completion from a
+   shell that adds a "/" after directory names (such as tcsh and
+   bash), because on symlinks to directories, several system calls
+   have different semantics according to whether a trailing slash is
+   present.  */
+
+bool
+strip_trailing_slashes (char *file)
+{
+  char *base = last_component (file);
+  char *base_lim;
+  bool had_slash;
+
+  /* last_component returns "" for file system roots, but we need to turn
+     "///" into "/".  */
+  if (! *base)
+    base = file;
+  base_lim = base + base_len (base);
+  had_slash = (*base_lim != '\0');
+  *base_lim = '\0';
+  return had_slash;
+}
diff --git a/src/grep/lib/strnlen.c b/src/grep/lib/strnlen.c
new file mode 100644
index 0000000..ded06ce
--- /dev/null
+++ b/src/grep/lib/strnlen.c
@@ -0,0 +1,30 @@
+/* Find the length of STRING, but scan at most MAXLEN characters.
+   Copyright (C) 2005-2007, 2009-2021 Free Software Foundation, Inc.
+   Written by Simon Josefsson.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <string.h>
+
+/* Find the length of STRING, but scan at most MAXLEN characters.
+   If no '\0' terminator is found in that many characters, return MAXLEN.  */
+
+size_t
+strnlen (const char *string, size_t maxlen)
+{
+  const char *end = memchr (string, '\0', maxlen);
+  return end ? (size_t) (end - string) : maxlen;
+}
diff --git a/src/grep/lib/strnlen1.c b/src/grep/lib/strnlen1.c
new file mode 100644
index 0000000..ac12576
--- /dev/null
+++ b/src/grep/lib/strnlen1.c
@@ -0,0 +1,35 @@
+/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
+   Copyright (C) 2005-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "strnlen1.h"
+
+#include <string.h>
+
+/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
+   If no '\0' terminator is found in that many characters, return MAXLEN.  */
+/* This is the same as strnlen (string, maxlen - 1) + 1.  */
+size_t
+strnlen1 (const char *string, size_t maxlen)
+{
+  const char *end = (const char *) memchr (string, '\0', maxlen);
+  if (end != NULL)
+    return end - string + 1;
+  else
+    return maxlen;
+}
diff --git a/src/grep/lib/strnlen1.h b/src/grep/lib/strnlen1.h
new file mode 100644
index 0000000..2d69299
--- /dev/null
+++ b/src/grep/lib/strnlen1.h
@@ -0,0 +1,40 @@
+/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
+   Copyright (C) 2005, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _STRNLEN1_H
+#define _STRNLEN1_H
+
+#include <stddef.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
+   If no '\0' terminator is found in that many characters, return MAXLEN.  */
+/* This is the same as strnlen (string, maxlen - 1) + 1.  */
+extern size_t strnlen1 (const char *string, size_t maxlen)
+  _GL_ATTRIBUTE_PURE;
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _STRNLEN1_H */
diff --git a/src/grep/lib/strstr.c b/src/grep/lib/strstr.c
new file mode 100644
index 0000000..2f62ce4
--- /dev/null
+++ b/src/grep/lib/strstr.c
@@ -0,0 +1,78 @@
+/* Copyright (C) 1991-1994, 1996-1998, 2000, 2004, 2007-2021 Free Software
+   Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This particular implementation was written by Eric Blake, 2008.  */
+
+#ifndef _LIBC
+# include <config.h>
+#endif
+
+/* Specification of strstr.  */
+#include <string.h>
+
+#include <stdbool.h>
+
+#define RETURN_TYPE char *
+#define AVAILABLE(h, h_l, j, n_l)                       \
+  (!memchr ((h) + (h_l), '\0', (j) + (n_l) - (h_l))     \
+   && ((h_l) = (j) + (n_l)))
+#include "str-two-way.h"
+
+/* Return the first occurrence of NEEDLE in HAYSTACK.  Return HAYSTACK
+   if NEEDLE is empty, otherwise NULL if NEEDLE is not found in
+   HAYSTACK.  */
+char *
+strstr (const char *haystack_start, const char *needle_start)
+{
+  const char *haystack = haystack_start;
+  const char *needle = needle_start;
+  size_t needle_len; /* Length of NEEDLE.  */
+  size_t haystack_len; /* Known minimum length of HAYSTACK.  */
+  bool ok = true; /* True if NEEDLE is prefix of HAYSTACK.  */
+
+  /* Determine length of NEEDLE, and in the process, make sure
+     HAYSTACK is at least as long (no point processing all of a long
+     NEEDLE if HAYSTACK is too short).  */
+  while (*haystack && *needle)
+    ok &= *haystack++ == *needle++;
+  if (*needle)
+    return NULL;
+  if (ok)
+    return (char *) haystack_start;
+
+  /* Reduce the size of haystack using strchr, since it has a smaller
+     linear coefficient than the Two-Way algorithm.  */
+  needle_len = needle - needle_start;
+  haystack = strchr (haystack_start + 1, *needle_start);
+  if (!haystack || __builtin_expect (needle_len == 1, 0))
+    return (char *) haystack;
+  needle -= needle_len;
+  haystack_len = (haystack > haystack_start + needle_len ? 1
+                  : needle_len + haystack_start - haystack);
+
+  /* Perform the search.  Abstract memory is considered to be an array
+     of 'unsigned char' values, not an array of 'char' values.  See
+     ISO C 99 section 6.2.6.1.  */
+  if (needle_len < LONG_NEEDLE_THRESHOLD)
+    return two_way_short_needle ((const unsigned char *) haystack,
+                                 haystack_len,
+                                 (const unsigned char *) needle, needle_len);
+  return two_way_long_needle ((const unsigned char *) haystack, haystack_len,
+                              (const unsigned char *) needle, needle_len);
+}
+
+#undef LONG_NEEDLE_THRESHOLD
diff --git a/src/grep/lib/strtoimax.c b/src/grep/lib/strtoimax.c
new file mode 100644
index 0000000..bf8534a
--- /dev/null
+++ b/src/grep/lib/strtoimax.c
@@ -0,0 +1,72 @@
+/* Convert string representation of a number into an intmax_t value.
+
+   Copyright (C) 1999, 2001-2004, 2006, 2009-2021 Free Software Foundation,
+   Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert. */
+
+#include <config.h>
+
+/* Verify interface.  */
+#include <inttypes.h>
+
+#include <stdlib.h>
+
+#include "verify.h"
+
+#ifdef UNSIGNED
+# ifndef HAVE_DECL_STRTOULL
+"this configure-time declaration test was not run"
+# endif
+# if !HAVE_DECL_STRTOULL
+unsigned long long int strtoull (char const *, char **, int);
+# endif
+
+#else
+
+# ifndef HAVE_DECL_STRTOLL
+"this configure-time declaration test was not run"
+# endif
+# if !HAVE_DECL_STRTOLL
+long long int strtoll (char const *, char **, int);
+# endif
+#endif
+
+#ifdef UNSIGNED
+# define Int uintmax_t
+# define Strtoimax strtoumax
+# define Strtol strtoul
+# define Strtoll strtoull
+# define Unsigned unsigned
+#else
+# define Int intmax_t
+# define Strtoimax strtoimax
+# define Strtol strtol
+# define Strtoll strtoll
+# define Unsigned
+#endif
+
+Int
+Strtoimax (char const *ptr, char **endptr, int base)
+{
+  verify (sizeof (Int) == sizeof (Unsigned long int)
+          || sizeof (Int) == sizeof (Unsigned long long int));
+
+  if (sizeof (Int) != sizeof (Unsigned long int))
+    return Strtoll (ptr, endptr, base);
+
+  return Strtol (ptr, endptr, base);
+}
diff --git a/src/grep/lib/strtol.c b/src/grep/lib/strtol.c
new file mode 100644
index 0000000..c49321b
--- /dev/null
+++ b/src/grep/lib/strtol.c
@@ -0,0 +1,408 @@
+/* Convert string representation of a number into an integer value.
+
+   Copyright (C) 1991-1992, 1994-1999, 2003, 2005-2007, 2009-2021 Free Software
+   Foundation, Inc.
+
+   NOTE: The canonical source of this file is maintained with the GNU C
+   Library.  Bugs can be reported to bug-glibc@gnu.org.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifdef _LIBC
+# define USE_NUMBER_GROUPING
+#else
+# include <config.h>
+#endif
+
+#include <ctype.h>
+#include <errno.h>
+#ifndef __set_errno
+# define __set_errno(Val) errno = (Val)
+#endif
+
+#include <limits.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef USE_NUMBER_GROUPING
+# include "../locale/localeinfo.h"
+#endif
+
+/* Nonzero if we are defining 'strtoul' or 'strtoull', operating on
+   unsigned integers.  */
+#ifndef UNSIGNED
+# define UNSIGNED 0
+# define INT LONG int
+#else
+# define INT unsigned LONG int
+#endif
+
+/* Determine the name.  */
+#ifdef USE_IN_EXTENDED_LOCALE_MODEL
+# undef strtol
+# if UNSIGNED
+#  ifdef USE_WIDE_CHAR
+#   ifdef QUAD
+#    define strtol __wcstoull_l
+#   else
+#    define strtol __wcstoul_l
+#   endif
+#  else
+#   ifdef QUAD
+#    define strtol __strtoull_l
+#   else
+#    define strtol __strtoul_l
+#   endif
+#  endif
+# else
+#  ifdef USE_WIDE_CHAR
+#   ifdef QUAD
+#    define strtol __wcstoll_l
+#   else
+#    define strtol __wcstol_l
+#   endif
+#  else
+#   ifdef QUAD
+#    define strtol __strtoll_l
+#   else
+#    define strtol __strtol_l
+#   endif
+#  endif
+# endif
+#else
+# if UNSIGNED
+#  undef strtol
+#  ifdef USE_WIDE_CHAR
+#   ifdef QUAD
+#    define strtol wcstoull
+#   else
+#    define strtol wcstoul
+#   endif
+#  else
+#   ifdef QUAD
+#    define strtol strtoull
+#   else
+#    define strtol strtoul
+#   endif
+#  endif
+# else
+#  ifdef USE_WIDE_CHAR
+#   undef strtol
+#   ifdef QUAD
+#    define strtol wcstoll
+#   else
+#    define strtol wcstol
+#   endif
+#  else
+#   ifdef QUAD
+#    undef strtol
+#    define strtol strtoll
+#   endif
+#  endif
+# endif
+#endif
+
+/* If QUAD is defined, we are defining 'strtoll' or 'strtoull',
+   operating on 'long long int's.  */
+#ifdef QUAD
+# define LONG long long
+# define STRTOL_LONG_MIN LLONG_MIN
+# define STRTOL_LONG_MAX LLONG_MAX
+# define STRTOL_ULONG_MAX ULLONG_MAX
+# if __GNUC__ == 2 && __GNUC_MINOR__ < 7
+   /* Work around gcc bug with using this constant.  */
+   static const unsigned long long int maxquad = ULLONG_MAX;
+#  undef STRTOL_ULONG_MAX
+#  define STRTOL_ULONG_MAX maxquad
+# endif
+#else
+# define LONG long
+# define STRTOL_LONG_MIN LONG_MIN
+# define STRTOL_LONG_MAX LONG_MAX
+# define STRTOL_ULONG_MAX ULONG_MAX
+#endif
+
+
+#ifdef USE_NUMBER_GROUPING
+# define GROUP_PARAM_PROTO , int group
+#else
+# define GROUP_PARAM_PROTO
+#endif
+
+/* We use this code also for the extended locale handling where the
+   function gets as an additional argument the locale which has to be
+   used.  To access the values we have to redefine the _NL_CURRENT
+   macro.  */
+#ifdef USE_IN_EXTENDED_LOCALE_MODEL
+# undef _NL_CURRENT
+# define _NL_CURRENT(category, item) \
+  (current->values[_NL_ITEM_INDEX (item)].string)
+# define LOCALE_PARAM , loc
+# define LOCALE_PARAM_PROTO , __locale_t loc
+#else
+# define LOCALE_PARAM
+# define LOCALE_PARAM_PROTO
+#endif
+
+#ifdef USE_WIDE_CHAR
+# include <wchar.h>
+# include <wctype.h>
+# define L_(Ch) L##Ch
+# define UCHAR_TYPE wint_t
+# define STRING_TYPE wchar_t
+# ifdef USE_IN_EXTENDED_LOCALE_MODEL
+#  define ISSPACE(Ch) __iswspace_l ((Ch), loc)
+#  define ISALPHA(Ch) __iswalpha_l ((Ch), loc)
+#  define TOUPPER(Ch) __towupper_l ((Ch), loc)
+# else
+#  define ISSPACE(Ch) iswspace (Ch)
+#  define ISALPHA(Ch) iswalpha (Ch)
+#  define TOUPPER(Ch) towupper (Ch)
+# endif
+#else
+# define L_(Ch) Ch
+# define UCHAR_TYPE unsigned char
+# define STRING_TYPE char
+# ifdef USE_IN_EXTENDED_LOCALE_MODEL
+#  define ISSPACE(Ch) __isspace_l ((unsigned char) (Ch), loc)
+#  define ISALPHA(Ch) __isalpha_l ((unsigned char) (Ch), loc)
+#  define TOUPPER(Ch) __toupper_l ((unsigned char) (Ch), loc)
+# else
+#  define ISSPACE(Ch) isspace ((unsigned char) (Ch))
+#  define ISALPHA(Ch) isalpha ((unsigned char) (Ch))
+#  define TOUPPER(Ch) toupper ((unsigned char) (Ch))
+# endif
+#endif
+
+#ifdef USE_NUMBER_GROUPING
+# define INTERNAL(X) INTERNAL1(X)
+# define INTERNAL1(X) __##X##_internal
+# define WEAKNAME(X) WEAKNAME1(X)
+#else
+# define INTERNAL(X) X
+#endif
+
+#ifdef USE_NUMBER_GROUPING
+/* This file defines a function to check for correct grouping.  */
+# include "grouping.h"
+#endif
+
+
+
+/* Convert NPTR to an 'unsigned long int' or 'long int' in base BASE.
+   If BASE is 0 the base is determined by the presence of a leading
+   zero, indicating octal or a leading "0x" or "0X", indicating hexadecimal.
+   If BASE is < 2 or > 36, it is reset to 10.
+   If ENDPTR is not NULL, a pointer to the character after the last
+   one converted is stored in *ENDPTR.  */
+
+INT
+INTERNAL (strtol) (const STRING_TYPE *nptr, STRING_TYPE **endptr,
+                   int base GROUP_PARAM_PROTO LOCALE_PARAM_PROTO)
+{
+  int negative;
+  register unsigned LONG int cutoff;
+  register unsigned int cutlim;
+  register unsigned LONG int i;
+  register const STRING_TYPE *s;
+  register UCHAR_TYPE c;
+  const STRING_TYPE *save, *end;
+  int overflow;
+
+#ifdef USE_NUMBER_GROUPING
+# ifdef USE_IN_EXTENDED_LOCALE_MODEL
+  struct locale_data *current = loc->__locales[LC_NUMERIC];
+# endif
+  /* The thousands character of the current locale.  */
+  wchar_t thousands = L'\0';
+  /* The numeric grouping specification of the current locale,
+     in the format described in <locale.h>.  */
+  const char *grouping;
+
+  if (group)
+    {
+      grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
+      if (*grouping <= 0 || *grouping == CHAR_MAX)
+        grouping = NULL;
+      else
+        {
+          /* Figure out the thousands separator character.  */
+# if defined _LIBC || defined _HAVE_BTOWC
+          thousands = __btowc (*_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP));
+          if (thousands == WEOF)
+            thousands = L'\0';
+# endif
+          if (thousands == L'\0')
+            grouping = NULL;
+        }
+    }
+  else
+    grouping = NULL;
+#endif
+
+  if (base < 0 || base == 1 || base > 36)
+    {
+      __set_errno (EINVAL);
+      return 0;
+    }
+
+  save = s = nptr;
+
+  /* Skip white space.  */
+  while (ISSPACE (*s))
+    ++s;
+  if (*s == L_('\0'))
+    goto noconv;
+
+  /* Check for a sign.  */
+  if (*s == L_('-'))
+    {
+      negative = 1;
+      ++s;
+    }
+  else if (*s == L_('+'))
+    {
+      negative = 0;
+      ++s;
+    }
+  else
+    negative = 0;
+
+  /* Recognize number prefix and if BASE is zero, figure it out ourselves.  */
+  if (*s == L_('0'))
+    {
+      if ((base == 0 || base == 16) && TOUPPER (s[1]) == L_('X'))
+        {
+          s += 2;
+          base = 16;
+        }
+      else if (base == 0)
+        base = 8;
+    }
+  else if (base == 0)
+    base = 10;
+
+  /* Save the pointer so we can check later if anything happened.  */
+  save = s;
+
+#ifdef USE_NUMBER_GROUPING
+  if (group)
+    {
+      /* Find the end of the digit string and check its grouping.  */
+      end = s;
+      for (c = *end; c != L_('\0'); c = *++end)
+        if ((wchar_t) c != thousands
+            && ((wchar_t) c < L_('0') || (wchar_t) c > L_('9'))
+            && (!ISALPHA (c) || (int) (TOUPPER (c) - L_('A') + 10) >= base))
+          break;
+      if (*s == thousands)
+        end = s;
+      else
+        end = correctly_grouped_prefix (s, end, thousands, grouping);
+    }
+  else
+#endif
+    end = NULL;
+
+  cutoff = STRTOL_ULONG_MAX / (unsigned LONG int) base;
+  cutlim = STRTOL_ULONG_MAX % (unsigned LONG int) base;
+
+  overflow = 0;
+  i = 0;
+  for (c = *s; c != L_('\0'); c = *++s)
+    {
+      if (s == end)
+        break;
+      if (c >= L_('0') && c <= L_('9'))
+        c -= L_('0');
+      else if (ISALPHA (c))
+        c = TOUPPER (c) - L_('A') + 10;
+      else
+        break;
+      if ((int) c >= base)
+        break;
+      /* Check for overflow.  */
+      if (i > cutoff || (i == cutoff && c > cutlim))
+        overflow = 1;
+      else
+        {
+          i *= (unsigned LONG int) base;
+          i += c;
+        }
+    }
+
+  /* Check if anything actually happened.  */
+  if (s == save)
+    goto noconv;
+
+  /* Store in ENDPTR the address of one character
+     past the last character we converted.  */
+  if (endptr != NULL)
+    *endptr = (STRING_TYPE *) s;
+
+#if !UNSIGNED
+  /* Check for a value that is within the range of
+     'unsigned LONG int', but outside the range of 'LONG int'.  */
+  if (overflow == 0
+      && i > (negative
+              ? -((unsigned LONG int) (STRTOL_LONG_MIN + 1)) + 1
+              : (unsigned LONG int) STRTOL_LONG_MAX))
+    overflow = 1;
+#endif
+
+  if (overflow)
+    {
+      __set_errno (ERANGE);
+#if UNSIGNED
+      return STRTOL_ULONG_MAX;
+#else
+      return negative ? STRTOL_LONG_MIN : STRTOL_LONG_MAX;
+#endif
+    }
+
+  /* Return the result of the appropriate sign.  */
+  return negative ? -i : i;
+
+noconv:
+  /* We must handle a special case here: the base is 0 or 16 and the
+     first two characters are '0' and 'x', but the rest are no
+     hexadecimal digits.  This is no error case.  We return 0 and
+     ENDPTR points to the 'x'.  */
+  if (endptr != NULL)
+    {
+      if (save - nptr >= 2 && TOUPPER (save[-1]) == L_('X')
+          && save[-2] == L_('0'))
+        *endptr = (STRING_TYPE *) &save[-1];
+      else
+        /*  There was no number to convert.  */
+        *endptr = (STRING_TYPE *) nptr;
+    }
+
+  return 0L;
+}
+
+#ifdef USE_NUMBER_GROUPING
+/* External user entry point.  */
+
+INT
+# ifdef weak_function
+weak_function
+# endif
+strtol (const STRING_TYPE *nptr, STRING_TYPE **endptr,
+        int base LOCALE_PARAM_PROTO)
+{
+  return INTERNAL (strtol) (nptr, endptr, base, 0 LOCALE_PARAM);
+}
+#endif
diff --git a/src/grep/lib/strtoll.c b/src/grep/lib/strtoll.c
new file mode 100644
index 0000000..8e6f93f
--- /dev/null
+++ b/src/grep/lib/strtoll.c
@@ -0,0 +1,33 @@
+/* Function to parse a 'long long int' from text.
+   Copyright (C) 1995-1997, 1999, 2001, 2009-2021 Free Software Foundation,
+   Inc.
+   This file is part of the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define QUAD    1
+
+#include <strtol.c>
+
+#ifdef _LIBC
+# ifdef SHARED
+#  include <shlib-compat.h>
+
+#  if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
+compat_symbol (libc, __strtoll_internal, __strtoq_internal, GLIBC_2_0);
+#  endif
+
+# endif
+weak_alias (strtoll, strtoq)
+#endif
diff --git a/src/grep/lib/strtoul.c b/src/grep/lib/strtoul.c
new file mode 100644
index 0000000..3927f1a
--- /dev/null
+++ b/src/grep/lib/strtoul.c
@@ -0,0 +1,19 @@
+/* Copyright (C) 1991, 1997, 2009-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define UNSIGNED        1
+
+#include "strtol.c"
diff --git a/src/grep/lib/strtoull.c b/src/grep/lib/strtoull.c
new file mode 100644
index 0000000..261e4e8
--- /dev/null
+++ b/src/grep/lib/strtoull.c
@@ -0,0 +1,26 @@
+/* Function to parse an 'unsigned long long int' from text.
+   Copyright (C) 1995-1997, 1999, 2009-2021 Free Software Foundation, Inc.
+   NOTE: The canonical source of this file is maintained with the GNU C
+   Library.  Bugs can be reported to bug-glibc@gnu.org.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define QUAD 1
+
+#include "strtoul.c"
+
+#ifdef _LIBC
+strong_alias (__strtoull_internal, __strtouq_internal)
+weak_alias (strtoull, strtouq)
+#endif
diff --git a/src/grep/lib/strtoumax.c b/src/grep/lib/strtoumax.c
new file mode 100644
index 0000000..3b4d9ec
--- /dev/null
+++ b/src/grep/lib/strtoumax.c
@@ -0,0 +1,19 @@
+/* Convert string representation of a number into a uintmax_t value.
+
+   Copyright (C) 1999-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define UNSIGNED 1
+#include "strtoimax.c"
diff --git a/src/grep/lib/sys-limits.h b/src/grep/lib/sys-limits.h
new file mode 100644
index 0000000..2d9784d
--- /dev/null
+++ b/src/grep/lib/sys-limits.h
@@ -0,0 +1,42 @@
+/* System call limits
+
+   Copyright 2018-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_SYS_LIMITS_H
+#define _GL_SYS_LIMITS_H
+
+#include <limits.h>
+
+/* Maximum number of bytes to read or write in a single system call.
+   This can be useful for system calls like sendfile on GNU/Linux,
+   which do not handle more than MAX_RW_COUNT bytes correctly.
+   The Linux kernel MAX_RW_COUNT is at least INT_MAX >> 20 << 20,
+   where the 20 comes from the Hexagon port with 1 MiB pages; use that
+   as an approximation, as the exact value may not be available to us.
+
+   Using this also works around a serious Linux bug before 2.6.16; see
+   <https://bugzilla.redhat.com/show_bug.cgi?id=612839>.
+
+   Using this also works around a Tru64 5.1 bug, where attempting
+   to read INT_MAX bytes fails with errno == EINVAL.  See
+   <https://lists.gnu.org/r/bug-gnu-utils/2002-04/msg00010.html>.
+
+   Using this is likely to work around similar bugs in other operating
+   systems.  */
+
+enum { SYS_BUFSIZE_MAX = INT_MAX >> 20 << 20 };
+
+#endif
diff --git a/src/grep/lib/sys_stat.in.h b/src/grep/lib/sys_stat.in.h
new file mode 100644
index 0000000..babe3db
--- /dev/null
+++ b/src/grep/lib/sys_stat.in.h
@@ -0,0 +1,928 @@
+/* Provide a more complete sys/stat.h header file.
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake, Paul Eggert, and Jim Meyering.  */
+
+/* This file is supposed to be used on platforms where <sys/stat.h> is
+   incomplete.  It is intended to provide definitions and prototypes
+   needed by an application.  Start with what the system provides.  */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined __need_system_sys_stat_h
+/* Special invocation convention.  */
+
+#@INCLUDE_NEXT@ @NEXT_SYS_STAT_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_SYS_STAT_H
+
+/* Get nlink_t.
+   May also define off_t to a 64-bit type on native Windows.  */
+#include <sys/types.h>
+
+/* Get struct timespec.  */
+#include <time.h>
+
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_SYS_STAT_H@
+
+#ifndef _@GUARD_PREFIX@_SYS_STAT_H
+#define _@GUARD_PREFIX@_SYS_STAT_H
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+/* Before doing "#define mknod rpl_mknod" below, we need to include all
+   headers that may declare mknod().  OS/2 kLIBC declares mknod() in
+   <unistd.h>, not in <sys/stat.h>.  */
+#ifdef __KLIBC__
+# include <unistd.h>
+#endif
+
+/* Before doing "#define mkdir rpl_mkdir" below, we need to include all
+   headers that may declare mkdir().  Native Windows platforms declare mkdir
+   in <io.h> and/or <direct.h>, not in <sys/stat.h>.  */
+#if defined _WIN32 && ! defined __CYGWIN__
+# include <io.h>     /* mingw32, mingw64 */
+# include <direct.h> /* mingw64, MSVC 9 */
+#endif
+
+/* Native Windows platforms declare umask() in <io.h>.  */
+#if 0 && (defined _WIN32 && ! defined __CYGWIN__)
+# include <io.h>
+#endif
+
+/* Large File Support on native Windows.  */
+#if @WINDOWS_64_BIT_ST_SIZE@
+# define stat _stati64
+#endif
+
+/* Optionally, override 'struct stat' on native Windows.  */
+#if @GNULIB_OVERRIDES_STRUCT_STAT@
+
+# undef stat
+# if @GNULIB_STAT@
+#  define stat rpl_stat
+# else
+   /* Provoke a clear link error if stat() is used as a function and
+      module 'stat' is not in use.  */
+#  define stat stat_used_without_requesting_gnulib_module_stat
+# endif
+
+# if !GNULIB_defined_struct_stat
+struct stat
+{
+  dev_t st_dev;
+  ino_t st_ino;
+  mode_t st_mode;
+  nlink_t st_nlink;
+#  if 0
+  uid_t st_uid;
+#  else /* uid_t is not defined by default on native Windows.  */
+  short st_uid;
+#  endif
+#  if 0
+  gid_t st_gid;
+#  else /* gid_t is not defined by default on native Windows.  */
+  short st_gid;
+#  endif
+  dev_t st_rdev;
+  off_t st_size;
+#  if 0
+  blksize_t st_blksize;
+  blkcnt_t st_blocks;
+#  endif
+
+#  if @WINDOWS_STAT_TIMESPEC@
+  struct timespec st_atim;
+  struct timespec st_mtim;
+  struct timespec st_ctim;
+#  else
+  time_t st_atime;
+  time_t st_mtime;
+  time_t st_ctime;
+#  endif
+};
+#  if @WINDOWS_STAT_TIMESPEC@
+#   define st_atime st_atim.tv_sec
+#   define st_mtime st_mtim.tv_sec
+#   define st_ctime st_ctim.tv_sec
+    /* Indicator, for gnulib internal purposes.  */
+#   define _GL_WINDOWS_STAT_TIMESPEC 1
+#  endif
+#  define GNULIB_defined_struct_stat 1
+# endif
+
+/* Other possible values of st_mode.  */
+# if 0
+#  define _S_IFBLK  0x6000
+# endif
+# if 0
+#  define _S_IFLNK  0xA000
+# endif
+# if 0
+#  define _S_IFSOCK 0xC000
+# endif
+
+#endif
+
+#ifndef S_IFIFO
+# ifdef _S_IFIFO
+#  define S_IFIFO _S_IFIFO
+# endif
+#endif
+
+#ifndef S_IFMT
+# define S_IFMT 0170000
+#endif
+
+#if STAT_MACROS_BROKEN
+# undef S_ISBLK
+# undef S_ISCHR
+# undef S_ISDIR
+# undef S_ISFIFO
+# undef S_ISLNK
+# undef S_ISNAM
+# undef S_ISMPB
+# undef S_ISMPC
+# undef S_ISNWK
+# undef S_ISREG
+# undef S_ISSOCK
+#endif
+
+#ifndef S_ISBLK
+# ifdef S_IFBLK
+#  define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
+# else
+#  define S_ISBLK(m) 0
+# endif
+#endif
+
+#ifndef S_ISCHR
+# ifdef S_IFCHR
+#  define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
+# else
+#  define S_ISCHR(m) 0
+# endif
+#endif
+
+#ifndef S_ISDIR
+# ifdef S_IFDIR
+#  define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+# else
+#  define S_ISDIR(m) 0
+# endif
+#endif
+
+#ifndef S_ISDOOR /* Solaris 2.5 and up */
+# define S_ISDOOR(m) 0
+#endif
+
+#ifndef S_ISFIFO
+# ifdef S_IFIFO
+#  define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
+# else
+#  define S_ISFIFO(m) 0
+# endif
+#endif
+
+#ifndef S_ISLNK
+# ifdef S_IFLNK
+#  define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
+# else
+#  define S_ISLNK(m) 0
+# endif
+#endif
+
+#ifndef S_ISMPB /* V7 */
+# ifdef S_IFMPB
+#  define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
+#  define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
+# else
+#  define S_ISMPB(m) 0
+#  define S_ISMPC(m) 0
+# endif
+#endif
+
+#ifndef S_ISMPX /* AIX */
+# define S_ISMPX(m) 0
+#endif
+
+#ifndef S_ISNAM /* Xenix */
+# ifdef S_IFNAM
+#  define S_ISNAM(m) (((m) & S_IFMT) == S_IFNAM)
+# else
+#  define S_ISNAM(m) 0
+# endif
+#endif
+
+#ifndef S_ISNWK /* HP/UX */
+# ifdef S_IFNWK
+#  define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
+# else
+#  define S_ISNWK(m) 0
+# endif
+#endif
+
+#ifndef S_ISPORT /* Solaris 10 and up */
+# define S_ISPORT(m) 0
+#endif
+
+#ifndef S_ISREG
+# ifdef S_IFREG
+#  define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
+# else
+#  define S_ISREG(m) 0
+# endif
+#endif
+
+#ifndef S_ISSOCK
+# ifdef S_IFSOCK
+#  define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
+# else
+#  define S_ISSOCK(m) 0
+# endif
+#endif
+
+
+#ifndef S_TYPEISMQ
+# define S_TYPEISMQ(p) 0
+#endif
+
+#ifndef S_TYPEISTMO
+# define S_TYPEISTMO(p) 0
+#endif
+
+
+#ifndef S_TYPEISSEM
+# ifdef S_INSEM
+#  define S_TYPEISSEM(p) (S_ISNAM ((p)->st_mode) && (p)->st_rdev == S_INSEM)
+# else
+#  define S_TYPEISSEM(p) 0
+# endif
+#endif
+
+#ifndef S_TYPEISSHM
+# ifdef S_INSHD
+#  define S_TYPEISSHM(p) (S_ISNAM ((p)->st_mode) && (p)->st_rdev == S_INSHD)
+# else
+#  define S_TYPEISSHM(p) 0
+# endif
+#endif
+
+/* high performance ("contiguous data") */
+#ifndef S_ISCTG
+# define S_ISCTG(p) 0
+#endif
+
+/* Cray DMF (data migration facility): off line, with data  */
+#ifndef S_ISOFD
+# define S_ISOFD(p) 0
+#endif
+
+/* Cray DMF (data migration facility): off line, with no data  */
+#ifndef S_ISOFL
+# define S_ISOFL(p) 0
+#endif
+
+/* 4.4BSD whiteout */
+#ifndef S_ISWHT
+# define S_ISWHT(m) 0
+#endif
+
+/* If any of the following are undefined,
+   define them to their de facto standard values.  */
+#if !S_ISUID
+# define S_ISUID 04000
+#endif
+#if !S_ISGID
+# define S_ISGID 02000
+#endif
+
+/* S_ISVTX is a common extension to POSIX.  */
+#ifndef S_ISVTX
+# define S_ISVTX 01000
+#endif
+
+#if !S_IRUSR && S_IREAD
+# define S_IRUSR S_IREAD
+#endif
+#if !S_IRUSR
+# define S_IRUSR 00400
+#endif
+#if !S_IRGRP
+# define S_IRGRP (S_IRUSR >> 3)
+#endif
+#if !S_IROTH
+# define S_IROTH (S_IRUSR >> 6)
+#endif
+
+#if !S_IWUSR && S_IWRITE
+# define S_IWUSR S_IWRITE
+#endif
+#if !S_IWUSR
+# define S_IWUSR 00200
+#endif
+#if !S_IWGRP
+# define S_IWGRP (S_IWUSR >> 3)
+#endif
+#if !S_IWOTH
+# define S_IWOTH (S_IWUSR >> 6)
+#endif
+
+#if !S_IXUSR && S_IEXEC
+# define S_IXUSR S_IEXEC
+#endif
+#if !S_IXUSR
+# define S_IXUSR 00100
+#endif
+#if !S_IXGRP
+# define S_IXGRP (S_IXUSR >> 3)
+#endif
+#if !S_IXOTH
+# define S_IXOTH (S_IXUSR >> 6)
+#endif
+
+#if !S_IRWXU
+# define S_IRWXU (S_IRUSR | S_IWUSR | S_IXUSR)
+#endif
+#if !S_IRWXG
+# define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
+#endif
+#if !S_IRWXO
+# define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
+#endif
+
+/* Although S_IXUGO and S_IRWXUGO are not specified by POSIX and are
+   not implemented in GNU/Linux, some Gnulib-using apps use the macros.  */
+#if !S_IXUGO
+# define S_IXUGO (S_IXUSR | S_IXGRP | S_IXOTH)
+#endif
+#ifndef S_IRWXUGO
+# define S_IRWXUGO (S_IRWXU | S_IRWXG | S_IRWXO)
+#endif
+
+/* Macros for futimens and utimensat.  */
+#ifndef UTIME_NOW
+# define UTIME_NOW (-1)
+# define UTIME_OMIT (-2)
+#endif
+
+
+#if @GNULIB_MDA_CHMOD@
+/* On native Windows, map 'chmod' to '_chmod', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::chmod always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef chmod
+#   define chmod _chmod
+#  endif
+/* Need to cast, because in mingw the last argument is 'int mode'.  */
+_GL_CXXALIAS_MDA_CAST (chmod, int, (const char *filename, mode_t mode));
+# else
+_GL_CXXALIAS_SYS (chmod, int, (const char *filename, mode_t mode));
+# endif
+_GL_CXXALIASWARN (chmod);
+#endif
+
+
+#if @GNULIB_FCHMODAT@
+# if @REPLACE_FCHMODAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fchmodat
+#   define fchmodat rpl_fchmodat
+#  endif
+_GL_FUNCDECL_RPL (fchmodat, int,
+                  (int fd, char const *file, mode_t mode, int flag)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (fchmodat, int,
+                  (int fd, char const *file, mode_t mode, int flag));
+# else
+#  if !@HAVE_FCHMODAT@
+_GL_FUNCDECL_SYS (fchmodat, int,
+                  (int fd, char const *file, mode_t mode, int flag)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (fchmodat, int,
+                  (int fd, char const *file, mode_t mode, int flag));
+# endif
+_GL_CXXALIASWARN (fchmodat);
+#elif defined GNULIB_POSIXCHECK
+# undef fchmodat
+# if HAVE_RAW_DECL_FCHMODAT
+_GL_WARN_ON_USE (fchmodat, "fchmodat is not portable - "
+                 "use gnulib module openat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FSTAT@
+# if @REPLACE_FSTAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fstat
+#   define fstat rpl_fstat
+#  endif
+_GL_FUNCDECL_RPL (fstat, int, (int fd, struct stat *buf) _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (fstat, int, (int fd, struct stat *buf));
+# else
+_GL_CXXALIAS_SYS (fstat, int, (int fd, struct stat *buf));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fstat);
+# endif
+#elif @GNULIB_OVERRIDES_STRUCT_STAT@
+# undef fstat
+# define fstat fstat_used_without_requesting_gnulib_module_fstat
+#elif @WINDOWS_64_BIT_ST_SIZE@
+/* Above, we define stat to _stati64.  */
+# define fstat _fstati64
+#elif defined GNULIB_POSIXCHECK
+# undef fstat
+# if HAVE_RAW_DECL_FSTAT
+_GL_WARN_ON_USE (fstat, "fstat has portability problems - "
+                 "use gnulib module fstat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FSTATAT@
+# if @REPLACE_FSTATAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fstatat
+#   define fstatat rpl_fstatat
+#  endif
+_GL_FUNCDECL_RPL (fstatat, int,
+                  (int fd, char const *restrict name, struct stat *restrict st,
+                   int flags)
+                  _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_RPL (fstatat, int,
+                  (int fd, char const *restrict name, struct stat *restrict st,
+                   int flags));
+# else
+#  if !@HAVE_FSTATAT@
+_GL_FUNCDECL_SYS (fstatat, int,
+                  (int fd, char const *restrict name, struct stat *restrict st,
+                   int flags)
+                  _GL_ARG_NONNULL ((2, 3)));
+#  endif
+_GL_CXXALIAS_SYS (fstatat, int,
+                  (int fd, char const *restrict name, struct stat *restrict st,
+                   int flags));
+# endif
+_GL_CXXALIASWARN (fstatat);
+#elif @GNULIB_OVERRIDES_STRUCT_STAT@
+# undef fstatat
+# define fstatat fstatat_used_without_requesting_gnulib_module_fstatat
+#elif defined GNULIB_POSIXCHECK
+# undef fstatat
+# if HAVE_RAW_DECL_FSTATAT
+_GL_WARN_ON_USE (fstatat, "fstatat is not portable - "
+                 "use gnulib module openat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FUTIMENS@
+/* Use the rpl_ prefix also on Solaris <= 9, because on Solaris 9 our futimens
+   implementation relies on futimesat, which on Solaris 10 makes an invocation
+   to futimens that is meant to invoke the libc's futimens(), not gnulib's
+   futimens().  */
+# if @REPLACE_FUTIMENS@ || (!@HAVE_FUTIMENS@ && defined __sun)
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef futimens
+#   define futimens rpl_futimens
+#  endif
+_GL_FUNCDECL_RPL (futimens, int, (int fd, struct timespec const times[2]));
+_GL_CXXALIAS_RPL (futimens, int, (int fd, struct timespec const times[2]));
+# else
+#  if !@HAVE_FUTIMENS@
+_GL_FUNCDECL_SYS (futimens, int, (int fd, struct timespec const times[2]));
+#  endif
+_GL_CXXALIAS_SYS (futimens, int, (int fd, struct timespec const times[2]));
+# endif
+# if @HAVE_FUTIMENS@
+_GL_CXXALIASWARN (futimens);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef futimens
+# if HAVE_RAW_DECL_FUTIMENS
+_GL_WARN_ON_USE (futimens, "futimens is not portable - "
+                 "use gnulib module futimens for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETUMASK@
+# if !@HAVE_GETUMASK@
+_GL_FUNCDECL_SYS (getumask, mode_t, (void));
+# endif
+_GL_CXXALIAS_SYS (getumask, mode_t, (void));
+# if @HAVE_GETUMASK@
+_GL_CXXALIASWARN (getumask);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getumask
+# if HAVE_RAW_DECL_GETUMASK
+_GL_WARN_ON_USE (getumask, "getumask is not portable - "
+                 "use gnulib module getumask for portability");
+# endif
+#endif
+
+
+#if @GNULIB_LCHMOD@
+/* Change the mode of FILENAME to MODE, without dereferencing it if FILENAME
+   denotes a symbolic link.  */
+# if !@HAVE_LCHMOD@ || defined __hpux
+_GL_FUNCDECL_SYS (lchmod, int, (const char *filename, mode_t mode)
+                               _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (lchmod, int, (const char *filename, mode_t mode));
+_GL_CXXALIASWARN (lchmod);
+#elif defined GNULIB_POSIXCHECK
+# undef lchmod
+# if HAVE_RAW_DECL_LCHMOD
+_GL_WARN_ON_USE (lchmod, "lchmod is unportable - "
+                 "use gnulib module lchmod for portability");
+# endif
+#endif
+
+
+#if @GNULIB_LSTAT@
+# if ! @HAVE_LSTAT@
+/* mingw does not support symlinks, therefore it does not have lstat.  But
+   without links, stat does just fine.  */
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define lstat stat
+#  endif
+_GL_CXXALIAS_RPL_1 (lstat, stat, int,
+                    (const char *restrict name, struct stat *restrict buf));
+# elif @REPLACE_LSTAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef lstat
+#   define lstat rpl_lstat
+#  endif
+_GL_FUNCDECL_RPL (lstat, int,
+                  (const char *restrict name, struct stat *restrict buf)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (lstat, int,
+                  (const char *restrict name, struct stat *restrict buf));
+# else
+_GL_CXXALIAS_SYS (lstat, int,
+                  (const char *restrict name, struct stat *restrict buf));
+# endif
+# if @HAVE_LSTAT@
+_GL_CXXALIASWARN (lstat);
+# endif
+#elif @GNULIB_OVERRIDES_STRUCT_STAT@
+# undef lstat
+# define lstat lstat_used_without_requesting_gnulib_module_lstat
+#elif defined GNULIB_POSIXCHECK
+# undef lstat
+# if HAVE_RAW_DECL_LSTAT
+_GL_WARN_ON_USE (lstat, "lstat is unportable - "
+                 "use gnulib module lstat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_MKDIR@
+# if @REPLACE_MKDIR@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mkdir
+#   define mkdir rpl_mkdir
+#  endif
+_GL_FUNCDECL_RPL (mkdir, int, (char const *name, mode_t mode)
+                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (mkdir, int, (char const *name, mode_t mode));
+# elif defined _WIN32 && !defined __CYGWIN__
+/* mingw's _mkdir() function has 1 argument, but we pass 2 arguments.
+   Additionally, it declares _mkdir (and depending on compile flags, an
+   alias mkdir), only in the nonstandard includes <direct.h> and <io.h>,
+   which are included above.  */
+#  if !GNULIB_defined_rpl_mkdir
+static int
+rpl_mkdir (char const *name, mode_t mode)
+{
+  return _mkdir (name);
+}
+#   define GNULIB_defined_rpl_mkdir 1
+#  endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mkdir
+#   define mkdir rpl_mkdir
+#  endif
+_GL_CXXALIAS_RPL (mkdir, int, (char const *name, mode_t mode));
+# else
+_GL_CXXALIAS_SYS (mkdir, int, (char const *name, mode_t mode));
+# endif
+_GL_CXXALIASWARN (mkdir);
+#elif defined GNULIB_POSIXCHECK
+# undef mkdir
+# if HAVE_RAW_DECL_MKDIR
+_GL_WARN_ON_USE (mkdir, "mkdir does not always support two parameters - "
+                 "use gnulib module mkdir for portability");
+# endif
+#elif @GNULIB_MDA_MKDIR@
+/* On native Windows, map 'mkdir' to '_mkdir', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::mkdir always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !GNULIB_defined_rpl_mkdir
+static int
+rpl_mkdir (char const *name, mode_t mode)
+{
+  return _mkdir (name);
+}
+#   define GNULIB_defined_rpl_mkdir 1
+#  endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mkdir
+#   define mkdir rpl_mkdir
+#  endif
+_GL_CXXALIAS_RPL (mkdir, int, (char const *name, mode_t mode));
+# else
+_GL_CXXALIAS_SYS (mkdir, int, (char const *name, mode_t mode));
+# endif
+_GL_CXXALIASWARN (mkdir);
+#endif
+
+
+#if @GNULIB_MKDIRAT@
+# if !@HAVE_MKDIRAT@
+_GL_FUNCDECL_SYS (mkdirat, int, (int fd, char const *file, mode_t mode)
+                                _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (mkdirat, int, (int fd, char const *file, mode_t mode));
+_GL_CXXALIASWARN (mkdirat);
+#elif defined GNULIB_POSIXCHECK
+# undef mkdirat
+# if HAVE_RAW_DECL_MKDIRAT
+_GL_WARN_ON_USE (mkdirat, "mkdirat is not portable - "
+                 "use gnulib module openat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_MKFIFO@
+# if @REPLACE_MKFIFO@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mkfifo
+#   define mkfifo rpl_mkfifo
+#  endif
+_GL_FUNCDECL_RPL (mkfifo, int, (char const *file, mode_t mode)
+                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (mkfifo, int, (char const *file, mode_t mode));
+# else
+#  if !@HAVE_MKFIFO@
+_GL_FUNCDECL_SYS (mkfifo, int, (char const *file, mode_t mode)
+                               _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (mkfifo, int, (char const *file, mode_t mode));
+# endif
+_GL_CXXALIASWARN (mkfifo);
+#elif defined GNULIB_POSIXCHECK
+# undef mkfifo
+# if HAVE_RAW_DECL_MKFIFO
+_GL_WARN_ON_USE (mkfifo, "mkfifo is not portable - "
+                 "use gnulib module mkfifo for portability");
+# endif
+#endif
+
+
+#if @GNULIB_MKFIFOAT@
+# if @REPLACE_MKFIFOAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mkfifoat
+#   define mkfifoat rpl_mkfifoat
+#  endif
+_GL_FUNCDECL_RPL (mkfifoat, int, (int fd, char const *file, mode_t mode)
+                                 _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (mkfifoat, int, (int fd, char const *file, mode_t mode));
+# else
+#  if !@HAVE_MKFIFOAT@
+_GL_FUNCDECL_SYS (mkfifoat, int, (int fd, char const *file, mode_t mode)
+                                 _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (mkfifoat, int, (int fd, char const *file, mode_t mode));
+# endif
+_GL_CXXALIASWARN (mkfifoat);
+#elif defined GNULIB_POSIXCHECK
+# undef mkfifoat
+# if HAVE_RAW_DECL_MKFIFOAT
+_GL_WARN_ON_USE (mkfifoat, "mkfifoat is not portable - "
+                 "use gnulib module mkfifoat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_MKNOD@
+# if @REPLACE_MKNOD@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mknod
+#   define mknod rpl_mknod
+#  endif
+_GL_FUNCDECL_RPL (mknod, int, (char const *file, mode_t mode, dev_t dev)
+                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (mknod, int, (char const *file, mode_t mode, dev_t dev));
+# else
+#  if !@HAVE_MKNOD@
+_GL_FUNCDECL_SYS (mknod, int, (char const *file, mode_t mode, dev_t dev)
+                              _GL_ARG_NONNULL ((1)));
+#  endif
+/* Need to cast, because on OSF/1 5.1, the third parameter is '...'.  */
+_GL_CXXALIAS_SYS_CAST (mknod, int, (char const *file, mode_t mode, dev_t dev));
+# endif
+_GL_CXXALIASWARN (mknod);
+#elif defined GNULIB_POSIXCHECK
+# undef mknod
+# if HAVE_RAW_DECL_MKNOD
+_GL_WARN_ON_USE (mknod, "mknod is not portable - "
+                 "use gnulib module mknod for portability");
+# endif
+#endif
+
+
+#if @GNULIB_MKNODAT@
+# if @REPLACE_MKNODAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mknodat
+#   define mknodat rpl_mknodat
+#  endif
+_GL_FUNCDECL_RPL (mknodat, int,
+                  (int fd, char const *file, mode_t mode, dev_t dev)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (mknodat, int,
+                  (int fd, char const *file, mode_t mode, dev_t dev));
+# else
+#  if !@HAVE_MKNODAT@
+_GL_FUNCDECL_SYS (mknodat, int,
+                  (int fd, char const *file, mode_t mode, dev_t dev)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (mknodat, int,
+                  (int fd, char const *file, mode_t mode, dev_t dev));
+# endif
+_GL_CXXALIASWARN (mknodat);
+#elif defined GNULIB_POSIXCHECK
+# undef mknodat
+# if HAVE_RAW_DECL_MKNODAT
+_GL_WARN_ON_USE (mknodat, "mknodat is not portable - "
+                 "use gnulib module mkfifoat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_STAT@
+# if @REPLACE_STAT@
+#  if !@GNULIB_OVERRIDES_STRUCT_STAT@
+    /* We can't use the object-like #define stat rpl_stat, because of
+       struct stat.  This means that rpl_stat will not be used if the user
+       does (stat)(a,b).  Oh well.  */
+#   if defined _AIX && defined stat && defined _LARGE_FILES
+     /* With _LARGE_FILES defined, AIX (only) defines stat to stat64,
+        so we have to replace stat64() instead of stat(). */
+#    undef stat64
+#    define stat64(name, st) rpl_stat (name, st)
+#   elif @WINDOWS_64_BIT_ST_SIZE@
+     /* Above, we define stat to _stati64.  */
+#    if defined __MINGW32__ && defined _stati64
+#     ifndef _USE_32BIT_TIME_T
+       /* The system headers define _stati64 to _stat64.  */
+#      undef _stat64
+#      define _stat64(name, st) rpl_stat (name, st)
+#     endif
+#    elif defined _MSC_VER && defined _stati64
+#     ifdef _USE_32BIT_TIME_T
+       /* The system headers define _stati64 to _stat32i64.  */
+#      undef _stat32i64
+#      define _stat32i64(name, st) rpl_stat (name, st)
+#     else
+       /* The system headers define _stati64 to _stat64.  */
+#      undef _stat64
+#      define _stat64(name, st) rpl_stat (name, st)
+#     endif
+#    else
+#     undef _stati64
+#     define _stati64(name, st) rpl_stat (name, st)
+#    endif
+#   elif defined __MINGW32__ && defined stat
+#    ifdef _USE_32BIT_TIME_T
+      /* The system headers define stat to _stat32i64.  */
+#     undef _stat32i64
+#     define _stat32i64(name, st) rpl_stat (name, st)
+#    else
+      /* The system headers define stat to _stat64.  */
+#     undef _stat64
+#     define _stat64(name, st) rpl_stat (name, st)
+#    endif
+#   elif defined _MSC_VER && defined stat
+#    ifdef _USE_32BIT_TIME_T
+      /* The system headers define stat to _stat32.  */
+#     undef _stat32
+#     define _stat32(name, st) rpl_stat (name, st)
+#    else
+      /* The system headers define stat to _stat64i32.  */
+#     undef _stat64i32
+#     define _stat64i32(name, st) rpl_stat (name, st)
+#    endif
+#   else /* !(_AIX || __MINGW32__ || _MSC_VER) */
+#    undef stat
+#    define stat(name, st) rpl_stat (name, st)
+#   endif /* !_LARGE_FILES */
+#  endif /* !@GNULIB_OVERRIDES_STRUCT_STAT@ */
+_GL_EXTERN_C int stat (const char *restrict name, struct stat *restrict buf)
+                      _GL_ARG_NONNULL ((1, 2));
+# endif
+#elif @GNULIB_OVERRIDES_STRUCT_STAT@
+/* see above:
+  #define stat stat_used_without_requesting_gnulib_module_stat
+ */
+#elif defined GNULIB_POSIXCHECK
+# undef stat
+# if HAVE_RAW_DECL_STAT
+_GL_WARN_ON_USE (stat, "stat is unportable - "
+                 "use gnulib module stat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_MDA_UMASK@
+/* On native Windows, map 'umask' to '_umask', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::umask always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef umask
+#   define umask _umask
+#  endif
+/* Need to cast, because in mingw the last argument is 'int mode'.  */
+_GL_CXXALIAS_MDA_CAST (umask, mode_t, (mode_t mask));
+# else
+_GL_CXXALIAS_SYS (umask, mode_t, (mode_t mask));
+# endif
+_GL_CXXALIASWARN (umask);
+#endif
+
+
+#if @GNULIB_UTIMENSAT@
+/* Use the rpl_ prefix also on Solaris <= 9, because on Solaris 9 our utimensat
+   implementation relies on futimesat, which on Solaris 10 makes an invocation
+   to utimensat that is meant to invoke the libc's utimensat(), not gnulib's
+   utimensat().  */
+# if @REPLACE_UTIMENSAT@ || (!@HAVE_UTIMENSAT@ && defined __sun)
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef utimensat
+#   define utimensat rpl_utimensat
+#  endif
+_GL_FUNCDECL_RPL (utimensat, int, (int fd, char const *name,
+                                   struct timespec const times[2], int flag)
+                                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (utimensat, int, (int fd, char const *name,
+                                   struct timespec const times[2], int flag));
+# else
+#  if !@HAVE_UTIMENSAT@
+_GL_FUNCDECL_SYS (utimensat, int, (int fd, char const *name,
+                                   struct timespec const times[2], int flag)
+                                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (utimensat, int, (int fd, char const *name,
+                                   struct timespec const times[2], int flag));
+# endif
+# if @HAVE_UTIMENSAT@
+_GL_CXXALIASWARN (utimensat);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef utimensat
+# if HAVE_RAW_DECL_UTIMENSAT
+_GL_WARN_ON_USE (utimensat, "utimensat is not portable - "
+                 "use gnulib module utimensat for portability");
+# endif
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_SYS_STAT_H */
+#endif /* _@GUARD_PREFIX@_SYS_STAT_H */
+#endif
diff --git a/src/grep/lib/sys_types.in.h b/src/grep/lib/sys_types.in.h
new file mode 100644
index 0000000..2079d72
--- /dev/null
+++ b/src/grep/lib/sys_types.in.h
@@ -0,0 +1,106 @@
+/* Provide a more complete sys/types.h.
+
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined _WIN32 && !defined __CYGWIN__ \
+    && (defined __need_off_t || defined __need___off64_t \
+        || defined __need_ssize_t || defined __need_time_t)
+
+/* Special invocation convention inside mingw header files.  */
+
+#@INCLUDE_NEXT@ @NEXT_SYS_TYPES_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_SYS_TYPES_H
+
+/* The include_next requires a split double-inclusion guard.  */
+# define _GL_INCLUDING_SYS_TYPES_H
+#@INCLUDE_NEXT@ @NEXT_SYS_TYPES_H@
+# undef _GL_INCLUDING_SYS_TYPES_H
+
+#ifndef _@GUARD_PREFIX@_SYS_TYPES_H
+#define _@GUARD_PREFIX@_SYS_TYPES_H
+
+/* Override off_t if Large File Support is requested on native Windows.  */
+#if @WINDOWS_64_BIT_OFF_T@
+/* Same as int64_t in <stdint.h>.  */
+# if defined _MSC_VER
+#  define off_t __int64
+# else
+#  define off_t long long int
+# endif
+/* Indicator, for gnulib internal purposes.  */
+# define _GL_WINDOWS_64_BIT_OFF_T 1
+#endif
+
+/* Override dev_t and ino_t if distinguishable inodes support is requested
+   on native Windows.  */
+#if @WINDOWS_STAT_INODES@
+
+# if @WINDOWS_STAT_INODES@ == 2
+/* Experimental, not useful in Windows 10.  */
+
+/* Define dev_t to a 64-bit type.  */
+#  if !defined GNULIB_defined_dev_t
+typedef unsigned long long int rpl_dev_t;
+#   undef dev_t
+#   define dev_t rpl_dev_t
+#   define GNULIB_defined_dev_t 1
+#  endif
+
+/* Define ino_t to a 128-bit type.  */
+#  if !defined GNULIB_defined_ino_t
+/* MSVC does not have a 128-bit integer type.
+   GCC has a 128-bit integer type __int128, but only on 64-bit targets.  */
+typedef struct { unsigned long long int _gl_ino[2]; } rpl_ino_t;
+#   undef ino_t
+#   define ino_t rpl_ino_t
+#   define GNULIB_defined_ino_t 1
+#  endif
+
+# else /* @WINDOWS_STAT_INODES@ == 1 */
+
+/* Define ino_t to a 64-bit type.  */
+#  if !defined GNULIB_defined_ino_t
+typedef unsigned long long int rpl_ino_t;
+#   undef ino_t
+#   define ino_t rpl_ino_t
+#   define GNULIB_defined_ino_t 1
+#  endif
+
+# endif
+
+/* Indicator, for gnulib internal purposes.  */
+# define _GL_WINDOWS_STAT_INODES @WINDOWS_STAT_INODES@
+
+#endif
+
+/* MSVC 9 defines size_t in <stddef.h>, not in <sys/types.h>.  */
+/* But avoid namespace pollution on glibc systems.  */
+#if (defined _WIN32 && ! defined __CYGWIN__) && ! defined __GLIBC__
+# include <stddef.h>
+#endif
+
+#endif /* _@GUARD_PREFIX@_SYS_TYPES_H */
+#endif /* _@GUARD_PREFIX@_SYS_TYPES_H */
+#endif /* __need_XXX */
diff --git a/src/grep/lib/time.in.h b/src/grep/lib/time.in.h
new file mode 100644
index 0000000..a73fe59
--- /dev/null
+++ b/src/grep/lib/time.in.h
@@ -0,0 +1,441 @@
+/* A more-standard <time.h>.
+
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* Don't get in the way of glibc when it includes time.h merely to
+   declare a few standard symbols, rather than to declare all the
+   symbols.  (However, skip this for MinGW as it treats __need_time_t
+   incompatibly.)  Also, Solaris 8 <time.h> eventually includes itself
+   recursively; if that is happening, just include the system <time.h>
+   without adding our own declarations.  */
+#if (((defined __need_time_t || defined __need_clock_t \
+       || defined __need_timespec)                     \
+      && !defined __MINGW32__)                         \
+     || defined _@GUARD_PREFIX@_TIME_H)
+
+# @INCLUDE_NEXT@ @NEXT_TIME_H@
+
+#else
+
+# define _@GUARD_PREFIX@_TIME_H
+
+/* mingw's <time.h> provides the functions asctime_r, ctime_r, gmtime_r,
+   localtime_r only if <unistd.h> or <pthread.h> has been included before.  */
+# if defined __MINGW32__
+#  include <unistd.h>
+# endif
+
+# @INCLUDE_NEXT@ @NEXT_TIME_H@
+
+/* NetBSD 5.0 mis-defines NULL.  */
+# include <stddef.h>
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+/* Some systems don't define struct timespec (e.g., AIX 4.1).
+   Or they define it with the wrong member names or define it in <sys/time.h>
+   (e.g., FreeBSD circa 1997).  Stock Mingw prior to 3.0 does not define it,
+   but the pthreads-win32 library defines it in <pthread.h>.  */
+# if ! @TIME_H_DEFINES_STRUCT_TIMESPEC@
+#  if @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
+#   include <sys/time.h>
+#  elif @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
+#   include <pthread.h>
+#  elif @UNISTD_H_DEFINES_STRUCT_TIMESPEC@
+#   include <unistd.h>
+#  else
+
+#   ifdef __cplusplus
+extern "C" {
+#   endif
+
+#   if !GNULIB_defined_struct_timespec
+#    undef timespec
+#    define timespec rpl_timespec
+struct timespec
+{
+  time_t tv_sec;
+  long int tv_nsec;
+};
+#    define GNULIB_defined_struct_timespec 1
+#   endif
+
+#   ifdef __cplusplus
+}
+#   endif
+
+#  endif
+# endif
+
+# if !GNULIB_defined_struct_time_t_must_be_integral
+/* https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_types.h.html
+   requires time_t to be an integer type, even though C99 permits floating
+   point.  We don't know of any implementation that uses floating
+   point, and it is much easier to write code that doesn't have to
+   worry about that corner case, so we force the issue.  */
+struct __time_t_must_be_integral {
+  unsigned int __floating_time_t_unsupported : (time_t) 1;
+};
+#  define GNULIB_defined_struct_time_t_must_be_integral 1
+# endif
+
+/* Define TIME_UTC, a positive integer constant used for timespec_get().  */
+# if ! @TIME_H_DEFINES_TIME_UTC@
+#  if !GNULIB_defined_TIME_UTC
+#   define TIME_UTC 1
+#   define GNULIB_defined_TIME_UTC 1
+#  endif
+# endif
+
+/* Set *TS to the current time, and return BASE.
+   Upon failure, return 0.  */
+# if @GNULIB_TIMESPEC_GET@
+#  if ! @HAVE_TIMESPEC_GET@
+_GL_FUNCDECL_SYS (timespec_get, int, (struct timespec *ts, int base)
+                                     _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (timespec_get, int, (struct timespec *ts, int base));
+_GL_CXXALIASWARN (timespec_get);
+# endif
+
+/* Sleep for at least RQTP seconds unless interrupted,  If interrupted,
+   return -1 and store the remaining time into RMTP.  See
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/nanosleep.html>.  */
+# if @GNULIB_NANOSLEEP@
+#  if @REPLACE_NANOSLEEP@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    define nanosleep rpl_nanosleep
+#   endif
+_GL_FUNCDECL_RPL (nanosleep, int,
+                  (struct timespec const *__rqtp, struct timespec *__rmtp)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (nanosleep, int,
+                  (struct timespec const *__rqtp, struct timespec *__rmtp));
+#  else
+#   if ! @HAVE_NANOSLEEP@
+_GL_FUNCDECL_SYS (nanosleep, int,
+                  (struct timespec const *__rqtp, struct timespec *__rmtp)
+                  _GL_ARG_NONNULL ((1)));
+#   endif
+_GL_CXXALIAS_SYS (nanosleep, int,
+                  (struct timespec const *__rqtp, struct timespec *__rmtp));
+#  endif
+_GL_CXXALIASWARN (nanosleep);
+# endif
+
+/* Initialize time conversion information.  */
+# if @GNULIB_TZSET@
+#  if @REPLACE_TZSET@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef tzset
+#    define tzset rpl_tzset
+#   endif
+_GL_FUNCDECL_RPL (tzset, void, (void));
+_GL_CXXALIAS_RPL (tzset, void, (void));
+#  elif defined _WIN32 && !defined __CYGWIN__
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef tzset
+#    define tzset _tzset
+#   endif
+_GL_CXXALIAS_MDA (tzset, void, (void));
+#  else
+_GL_CXXALIAS_SYS (tzset, void, (void));
+#  endif
+_GL_CXXALIASWARN (tzset);
+# elif @GNULIB_MDA_TZSET@
+/* On native Windows, map 'tzset' to '_tzset', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::tzset always.  */
+#  if defined _WIN32 && !defined __CYGWIN__
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef tzset
+#    define tzset _tzset
+#   endif
+_GL_CXXALIAS_MDA (tzset, void, (void));
+#  else
+_GL_CXXALIAS_SYS (tzset, void, (void));
+#  endif
+_GL_CXXALIASWARN (tzset);
+# endif
+
+/* Return the 'time_t' representation of TP and normalize TP.  */
+# if @GNULIB_MKTIME@
+#  if @REPLACE_MKTIME@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    define mktime rpl_mktime
+#   endif
+_GL_FUNCDECL_RPL (mktime, time_t, (struct tm *__tp) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (mktime, time_t, (struct tm *__tp));
+#  else
+_GL_CXXALIAS_SYS (mktime, time_t, (struct tm *__tp));
+#  endif
+#  if __GLIBC__ >= 2
+_GL_CXXALIASWARN (mktime);
+#  endif
+# endif
+
+/* Convert TIMER to RESULT, assuming local time and UTC respectively.  See
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/localtime_r.html> and
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/gmtime_r.html>.  */
+# if @GNULIB_TIME_R@
+#  if @REPLACE_LOCALTIME_R@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef localtime_r
+#    define localtime_r rpl_localtime_r
+#   endif
+_GL_FUNCDECL_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
+                                             struct tm *restrict __result)
+                                            _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
+                                             struct tm *restrict __result));
+#  else
+#   if ! @HAVE_DECL_LOCALTIME_R@
+_GL_FUNCDECL_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
+                                             struct tm *restrict __result)
+                                            _GL_ARG_NONNULL ((1, 2)));
+#   endif
+_GL_CXXALIAS_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
+                                             struct tm *restrict __result));
+#  endif
+#  if @HAVE_DECL_LOCALTIME_R@
+_GL_CXXALIASWARN (localtime_r);
+#  endif
+#  if @REPLACE_LOCALTIME_R@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef gmtime_r
+#    define gmtime_r rpl_gmtime_r
+#   endif
+_GL_FUNCDECL_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
+                                          struct tm *restrict __result)
+                                         _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
+                                          struct tm *restrict __result));
+#  else
+#   if ! @HAVE_DECL_LOCALTIME_R@
+_GL_FUNCDECL_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
+                                          struct tm *restrict __result)
+                                         _GL_ARG_NONNULL ((1, 2)));
+#   endif
+_GL_CXXALIAS_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
+                                          struct tm *restrict __result));
+#  endif
+#  if @HAVE_DECL_LOCALTIME_R@
+_GL_CXXALIASWARN (gmtime_r);
+#  endif
+# endif
+
+/* Convert TIMER to RESULT, assuming local time and UTC respectively.  See
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/localtime.html> and
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/gmtime.html>.  */
+# if @GNULIB_LOCALTIME@ || @REPLACE_LOCALTIME@
+#  if @REPLACE_LOCALTIME@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef localtime
+#    define localtime rpl_localtime
+#   endif
+_GL_FUNCDECL_RPL (localtime, struct tm *, (time_t const *__timer)
+                                          _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (localtime, struct tm *, (time_t const *__timer));
+#  else
+_GL_CXXALIAS_SYS (localtime, struct tm *, (time_t const *__timer));
+#  endif
+#  if __GLIBC__ >= 2
+_GL_CXXALIASWARN (localtime);
+#  endif
+# endif
+
+# if 0 || @REPLACE_GMTIME@
+#  if @REPLACE_GMTIME@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef gmtime
+#    define gmtime rpl_gmtime
+#   endif
+_GL_FUNCDECL_RPL (gmtime, struct tm *, (time_t const *__timer)
+                                       _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (gmtime, struct tm *, (time_t const *__timer));
+#  else
+_GL_CXXALIAS_SYS (gmtime, struct tm *, (time_t const *__timer));
+#  endif
+_GL_CXXALIASWARN (gmtime);
+# endif
+
+/* Parse BUF as a timestamp, assuming FORMAT specifies its layout, and store
+   the resulting broken-down time into TM.  See
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/strptime.html>.  */
+# if @GNULIB_STRPTIME@
+#  if ! @HAVE_STRPTIME@
+_GL_FUNCDECL_SYS (strptime, char *, (char const *restrict __buf,
+                                     char const *restrict __format,
+                                     struct tm *restrict __tm)
+                                    _GL_ARG_NONNULL ((1, 2, 3)));
+#  endif
+_GL_CXXALIAS_SYS (strptime, char *, (char const *restrict __buf,
+                                     char const *restrict __format,
+                                     struct tm *restrict __tm));
+_GL_CXXALIASWARN (strptime);
+# endif
+
+/* Convert *TP to a date and time string.  See
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/ctime.html>.  */
+# if @GNULIB_CTIME@
+#  if @REPLACE_CTIME@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    define ctime rpl_ctime
+#   endif
+_GL_FUNCDECL_RPL (ctime, char *, (time_t const *__tp)
+                                 _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (ctime, char *, (time_t const *__tp));
+#  else
+_GL_CXXALIAS_SYS (ctime, char *, (time_t const *__tp));
+#  endif
+#  if __GLIBC__ >= 2
+_GL_CXXALIASWARN (ctime);
+#  endif
+# endif
+
+/* Convert *TP to a date and time string.  See
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html>.  */
+# if @GNULIB_STRFTIME@
+#  if @REPLACE_STRFTIME@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    define strftime rpl_strftime
+#   endif
+_GL_FUNCDECL_RPL (strftime, size_t,
+                  (char *restrict __buf, size_t __bufsize,
+                   const char *restrict __fmt, const struct tm *restrict __tp)
+                  _GL_ARG_NONNULL ((1, 3, 4)));
+_GL_CXXALIAS_RPL (strftime, size_t,
+                  (char *restrict __buf, size_t __bufsize,
+                   const char *restrict __fmt, const struct tm *restrict __tp));
+#  else
+_GL_CXXALIAS_SYS (strftime, size_t,
+                  (char *restrict __buf, size_t __bufsize,
+                   const char *restrict __fmt, const struct tm *restrict __tp));
+#  endif
+#  if __GLIBC__ >= 2
+_GL_CXXALIASWARN (strftime);
+#  endif
+# endif
+
+# if defined _GNU_SOURCE && @GNULIB_TIME_RZ@ && ! @HAVE_TIMEZONE_T@
+/* Functions that use a first-class time zone data type, instead of
+   relying on an implicit global time zone.
+   Inspired by NetBSD.  */
+
+/* Represents a time zone.
+   (timezone_t) NULL stands for UTC.  */
+typedef struct tm_zone *timezone_t;
+
+/* tzalloc (name)
+   Returns a time zone object for the given time zone NAME.  This object
+   represents the time zone that other functions would use it the TZ
+   environment variable was set to NAME.
+   If NAME is NULL, the result represents the time zone that other functions
+   would use it the TZ environment variable was unset.
+   May return NULL if NAME is invalid (this is platform dependent) or
+   upon memory allocation failure.  */
+_GL_FUNCDECL_SYS (tzalloc, timezone_t, (char const *__name));
+_GL_CXXALIAS_SYS (tzalloc, timezone_t, (char const *__name));
+
+/* tzfree (tz)
+   Frees a time zone object.
+   The argument must have been returned by tzalloc().  */
+_GL_FUNCDECL_SYS (tzfree, void, (timezone_t __tz));
+_GL_CXXALIAS_SYS (tzfree, void, (timezone_t __tz));
+
+/* localtime_rz (tz, &t, &result)
+   Converts an absolute time T to a broken-down time RESULT, assuming the
+   time zone TZ.
+   This function is like 'localtime_r', but relies on the argument TZ instead
+   of an implicit global time zone.  */
+_GL_FUNCDECL_SYS (localtime_rz, struct tm *,
+                  (timezone_t __tz, time_t const *restrict __timer,
+                   struct tm *restrict __result) _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_SYS (localtime_rz, struct tm *,
+                  (timezone_t __tz, time_t const *restrict __timer,
+                   struct tm *restrict __result));
+
+/* mktime_z (tz, &tm)
+   Normalizes the broken-down time TM and converts it to an absolute time,
+   assuming the time zone TZ.  Returns the absolute time.
+   This function is like 'mktime', but relies on the argument TZ instead
+   of an implicit global time zone.  */
+_GL_FUNCDECL_SYS (mktime_z, time_t,
+                  (timezone_t __tz, struct tm *restrict __tm)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_SYS (mktime_z, time_t,
+                  (timezone_t __tz, struct tm *restrict __tm));
+
+/* Time zone abbreviation strings (returned by 'localtime_rz' or 'mktime_z'
+   in the 'tm_zone' member of 'struct tm') are valid as long as
+     - the 'struct tm' argument is not destroyed or overwritten,
+   and
+     - the 'timezone_t' argument is not freed through tzfree().  */
+
+# endif
+
+/* Convert TM to a time_t value, assuming UTC.  */
+# if @GNULIB_TIMEGM@
+#  if @REPLACE_TIMEGM@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef timegm
+#    define timegm rpl_timegm
+#   endif
+_GL_FUNCDECL_RPL (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (timegm, time_t, (struct tm *__tm));
+#  else
+#   if ! @HAVE_TIMEGM@
+_GL_FUNCDECL_SYS (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
+#   endif
+_GL_CXXALIAS_SYS (timegm, time_t, (struct tm *__tm));
+#  endif
+_GL_CXXALIASWARN (timegm);
+# endif
+
+/* Encourage applications to avoid unsafe functions that can overrun
+   buffers when given outlandish struct tm values.  Portable
+   applications should use strftime (or even sprintf) instead.  */
+# if defined GNULIB_POSIXCHECK
+#  undef asctime
+_GL_WARN_ON_USE (asctime, "asctime can overrun buffers in some cases - "
+                 "better use strftime (or even sprintf) instead");
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef asctime_r
+_GL_WARN_ON_USE (asctime_r, "asctime_r can overrun buffers in some cases - "
+                 "better use strftime (or even sprintf) instead");
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef ctime
+_GL_WARN_ON_USE (ctime, "ctime can overrun buffers in some cases - "
+                 "better use strftime (or even sprintf) instead");
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef ctime_r
+_GL_WARN_ON_USE (ctime_r, "ctime_r can overrun buffers in some cases - "
+                 "better use strftime (or even sprintf) instead");
+# endif
+
+#endif
diff --git a/src/grep/lib/trim.c b/src/grep/lib/trim.c
new file mode 100644
index 0000000..30e7d5b
--- /dev/null
+++ b/src/grep/lib/trim.c
@@ -0,0 +1,129 @@
+/* Removes leading and/or trailing whitespaces
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Davide Angelocola <davide.angelocola@gmail.com> */
+
+#include <config.h>
+
+/* Specification.  */
+#include "trim.h"
+
+#include <ctype.h>
+#include <string.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+#include "mbchar.h"
+#include "mbiter.h"
+#include "xalloc.h"
+
+/* Use this to suppress gcc's "...may be used before initialized" warnings. */
+#if defined GCC_LINT || defined lint
+# define IF_LINT(Code) Code
+#else
+# define IF_LINT(Code) /* empty */
+#endif
+
+char *
+trim2 (const char *s, int how)
+{
+  char *d;
+
+  d = strdup (s);
+
+  if (!d)
+    xalloc_die ();
+
+  if (MB_CUR_MAX > 1)
+    {
+      mbi_iterator_t i;
+
+      /* Trim leading whitespaces. */
+      if (how != TRIM_TRAILING)
+        {
+          mbi_init (i, d, strlen (d));
+
+          for (; mbi_avail (i) && mb_isspace (mbi_cur (i)); mbi_advance (i))
+            ;
+
+          memmove (d, mbi_cur_ptr (i), strlen (mbi_cur_ptr (i)) + 1);
+        }
+
+      /* Trim trailing whitespaces. */
+      if (how != TRIM_LEADING)
+        {
+          unsigned int state = 0;
+          char *r IF_LINT (= NULL); /* used only while state = 2 */
+
+          mbi_init (i, d, strlen (d));
+
+          for (; mbi_avail (i); mbi_advance (i))
+            {
+              if (state == 0 && mb_isspace (mbi_cur (i)))
+                continue;
+
+              if (state == 0 && !mb_isspace (mbi_cur (i)))
+                {
+                  state = 1;
+                  continue;
+                }
+
+              if (state == 1 && !mb_isspace (mbi_cur (i)))
+                continue;
+
+              if (state == 1 && mb_isspace (mbi_cur (i)))
+                {
+                  state = 2;
+                  r = (char *) mbi_cur_ptr (i);
+                }
+              else if (state == 2 && mb_isspace (mbi_cur (i)))
+                {
+                  /* empty */
+                }
+              else
+                {
+                  state = 1;
+                }
+            }
+
+          if (state == 2)
+            *r = '\0';
+        }
+    }
+  else
+    {
+      char *p;
+
+      /* Trim leading whitespaces. */
+      if (how != TRIM_TRAILING)
+        {
+          for (p = d; *p && isspace ((unsigned char) *p); p++)
+            ;
+
+          memmove (d, p, strlen (p) + 1);
+        }
+
+      /* Trim trailing whitespaces. */
+      if (how != TRIM_LEADING)
+        {
+          for (p = d + strlen (d) - 1;
+               p >= d && isspace ((unsigned char) *p); p--)
+            *p = '\0';
+        }
+    }
+
+  return d;
+}
diff --git a/src/grep/lib/trim.h b/src/grep/lib/trim.h
new file mode 100644
index 0000000..761b8a6
--- /dev/null
+++ b/src/grep/lib/trim.h
@@ -0,0 +1,37 @@
+/* Removes leading and/or trailing whitespaces
+   Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Davide Angelocola <davide.angelocola@gmail.com> */
+
+#include <stdlib.h>
+
+/* Trim mode. */
+#define TRIM_TRAILING 0
+#define TRIM_LEADING 1
+#define TRIM_BOTH 2
+
+/* Removes trailing and leading whitespaces. */
+#define trim(s) trim2(s, TRIM_BOTH)
+
+/* Removes trailing whitespaces. */
+#define trim_trailing(s) trim2(s, TRIM_TRAILING)
+
+/* Removes leading whitespaces. */
+#define trim_leading(s) trim2(s, TRIM_LEADING)
+
+char *trim2 (const char *, int)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
diff --git a/src/grep/lib/unistd--.h b/src/grep/lib/unistd--.h
new file mode 100644
index 0000000..5e6ecb0
--- /dev/null
+++ b/src/grep/lib/unistd--.h
@@ -0,0 +1,32 @@
+/* Like unistd.h, but redefine some names to avoid glitches.
+
+   Copyright (C) 2005, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <unistd.h>
+#include "unistd-safer.h"
+
+#undef dup
+#define dup dup_safer
+
+#undef pipe
+#define pipe pipe_safer
+
+#if GNULIB_PIPE2_SAFER
+# undef pipe2
+# define pipe2 pipe2_safer
+#endif
diff --git a/src/grep/lib/unistd-safer.h b/src/grep/lib/unistd-safer.h
new file mode 100644
index 0000000..541bafe
--- /dev/null
+++ b/src/grep/lib/unistd-safer.h
@@ -0,0 +1,31 @@
+/* Invoke unistd-like functions, but avoid some glitches.
+
+   Copyright (C) 2001, 2003, 2005, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert and Eric Blake.  */
+
+int dup_safer (int);
+int fd_safer (int);
+int pipe_safer (int[2]);
+
+#if GNULIB_FD_SAFER_FLAG
+int dup_safer_flag (int, int);
+int fd_safer_flag (int, int);
+#endif
+
+#if GNULIB_PIPE2_SAFER
+int pipe2_safer (int[2], int);
+#endif
diff --git a/src/grep/lib/unistd.c b/src/grep/lib/unistd.c
new file mode 100644
index 0000000..0763456
--- /dev/null
+++ b/src/grep/lib/unistd.c
@@ -0,0 +1,22 @@
+/* Inline functions for <unistd.h>.
+
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define _GL_UNISTD_INLINE _GL_EXTERN_INLINE
+#include "unistd.h"
+typedef int dummy;
diff --git a/src/grep/lib/unistd.in.h b/src/grep/lib/unistd.in.h
new file mode 100644
index 0000000..73c882f
--- /dev/null
+++ b/src/grep/lib/unistd.in.h
@@ -0,0 +1,2312 @@
+/* Substitute for and wrapper around <unistd.h>.
+   Copyright (C) 2003-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _@GUARD_PREFIX@_UNISTD_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if @HAVE_UNISTD_H@ && defined _GL_INCLUDING_UNISTD_H
+/* Special invocation convention:
+   - On Mac OS X 10.3.9 we have a sequence of nested includes
+     <unistd.h> -> <signal.h> -> <pthread.h> -> <unistd.h>
+     In this situation, the functions are not yet declared, therefore we cannot
+     provide the C++ aliases.  */
+
+#@INCLUDE_NEXT@ @NEXT_UNISTD_H@
+
+#else
+/* Normal invocation convention.  */
+
+/* The include_next requires a split double-inclusion guard.  */
+#if @HAVE_UNISTD_H@
+# define _GL_INCLUDING_UNISTD_H
+# @INCLUDE_NEXT@ @NEXT_UNISTD_H@
+# undef _GL_INCLUDING_UNISTD_H
+#endif
+
+/* Get all possible declarations of gethostname().  */
+#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
+  && !defined _GL_INCLUDING_WINSOCK2_H
+# define _GL_INCLUDING_WINSOCK2_H
+# include <winsock2.h>
+# undef _GL_INCLUDING_WINSOCK2_H
+#endif
+
+#if !defined _@GUARD_PREFIX@_UNISTD_H && !defined _GL_INCLUDING_WINSOCK2_H
+#define _@GUARD_PREFIX@_UNISTD_H
+
+/* NetBSD 5.0 mis-defines NULL.  Also get size_t.  */
+/* But avoid namespace pollution on glibc systems.  */
+#ifndef __GLIBC__
+# include <stddef.h>
+#endif
+
+/* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>.  */
+/* MSVC declares 'unlink' in <stdio.h>, not in <unistd.h>.  We must include
+   it before we  #define unlink rpl_unlink.  */
+/* Cygwin 1.7.1 declares symlinkat in <stdio.h>, not in <unistd.h>.  */
+/* But avoid namespace pollution on glibc systems.  */
+#if (!(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET) \
+     || ((@GNULIB_UNLINK@ || defined GNULIB_POSIXCHECK) \
+         && (defined _WIN32 && ! defined __CYGWIN__)) \
+     || ((@GNULIB_SYMLINKAT@ || defined GNULIB_POSIXCHECK) \
+         && defined __CYGWIN__)) \
+    && ! defined __GLIBC__
+# include <stdio.h>
+#endif
+
+/* Cygwin 1.7.1 and Android 4.3 declare unlinkat in <fcntl.h>, not in
+   <unistd.h>.  */
+/* But avoid namespace pollution on glibc systems.  */
+#if (@GNULIB_UNLINKAT@ || defined GNULIB_POSIXCHECK) \
+    && (defined __CYGWIN__ || defined __ANDROID__) \
+    && ! defined __GLIBC__
+# include <fcntl.h>
+#endif
+
+/* mingw fails to declare _exit in <unistd.h>.  */
+/* mingw, MSVC, BeOS, Haiku declare environ in <stdlib.h>, not in
+   <unistd.h>.  */
+/* Solaris declares getcwd not only in <unistd.h> but also in <stdlib.h>.  */
+/* OSF Tru64 Unix cannot see gnulib rpl_strtod when system <stdlib.h> is
+   included here.  */
+/* But avoid namespace pollution on glibc systems.  */
+#if !defined __GLIBC__ && !defined __osf__
+# define __need_system_stdlib_h
+# include <stdlib.h>
+# undef __need_system_stdlib_h
+#endif
+
+/* Native Windows platforms declare _chdir, _getcwd, _rmdir in
+   <io.h> and/or <direct.h>, not in <unistd.h>.
+   They also declare _access(), _chmod(), _close(), _dup(), _dup2(), _isatty(),
+   _lseek(), _read(), _unlink(), _write() in <io.h>.  */
+#if defined _WIN32 && !defined __CYGWIN__
+# include <io.h>
+# include <direct.h>
+#endif
+
+/* Native Windows platforms declare _execl*, _execv* in <process.h>.  */
+#if defined _WIN32 && !defined __CYGWIN__
+# include <process.h>
+#endif
+
+/* AIX and OSF/1 5.1 declare getdomainname in <netdb.h>, not in <unistd.h>.
+   NonStop Kernel declares gethostname in <netdb.h>, not in <unistd.h>.  */
+/* But avoid namespace pollution on glibc systems.  */
+#if ((@GNULIB_GETDOMAINNAME@ && (defined _AIX || defined __osf__)) \
+     || (@GNULIB_GETHOSTNAME@ && defined __TANDEM)) \
+    && !defined __GLIBC__
+# include <netdb.h>
+#endif
+
+/* Mac OS X 10.13, Solaris 11.4, and Android 9.0 declare getentropy in
+   <sys/random.h>, not in <unistd.h>.  */
+/* But avoid namespace pollution on glibc systems.  */
+#if (@GNULIB_GETENTROPY@ || defined GNULIB_POSIXCHECK) \
+    && ((defined __APPLE__ && defined __MACH__) || defined __sun \
+        || defined __ANDROID__) \
+    && @UNISTD_H_HAVE_SYS_RANDOM_H@ \
+    && !defined __GLIBC__
+# include <sys/random.h>
+#endif
+
+/* Android 4.3 declares fchownat in <sys/stat.h>, not in <unistd.h>.  */
+/* But avoid namespace pollution on glibc systems.  */
+#if (@GNULIB_FCHOWNAT@ || defined GNULIB_POSIXCHECK) && defined __ANDROID__ \
+    && !defined __GLIBC__
+# include <sys/stat.h>
+#endif
+
+/* MSVC defines off_t in <sys/types.h>.
+   May also define off_t to a 64-bit type on native Windows.  */
+/* Get off_t, ssize_t, mode_t.  */
+#include <sys/types.h>
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
+/* Get getopt(), optarg, optind, opterr, optopt.  */
+#if @GNULIB_GETOPT_POSIX@ && @GNULIB_UNISTD_H_GETOPT@ && !defined _GL_SYSTEM_GETOPT
+# include <getopt-cdefs.h>
+# include <getopt-pfx-core.h>
+#endif
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef _GL_UNISTD_INLINE
+# define _GL_UNISTD_INLINE _GL_INLINE
+#endif
+
+/* Hide some function declarations from <winsock2.h>.  */
+
+#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@
+# if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef socket
+#   define socket              socket_used_without_including_sys_socket_h
+#   undef connect
+#   define connect             connect_used_without_including_sys_socket_h
+#   undef accept
+#   define accept              accept_used_without_including_sys_socket_h
+#   undef bind
+#   define bind                bind_used_without_including_sys_socket_h
+#   undef getpeername
+#   define getpeername         getpeername_used_without_including_sys_socket_h
+#   undef getsockname
+#   define getsockname         getsockname_used_without_including_sys_socket_h
+#   undef getsockopt
+#   define getsockopt          getsockopt_used_without_including_sys_socket_h
+#   undef listen
+#   define listen              listen_used_without_including_sys_socket_h
+#   undef recv
+#   define recv                recv_used_without_including_sys_socket_h
+#   undef send
+#   define send                send_used_without_including_sys_socket_h
+#   undef recvfrom
+#   define recvfrom            recvfrom_used_without_including_sys_socket_h
+#   undef sendto
+#   define sendto              sendto_used_without_including_sys_socket_h
+#   undef setsockopt
+#   define setsockopt          setsockopt_used_without_including_sys_socket_h
+#   undef shutdown
+#   define shutdown            shutdown_used_without_including_sys_socket_h
+#  else
+    _GL_WARN_ON_USE (socket,
+                     "socket() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (connect,
+                     "connect() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (accept,
+                     "accept() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (bind,
+                     "bind() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (getpeername,
+                     "getpeername() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (getsockname,
+                     "getsockname() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (getsockopt,
+                     "getsockopt() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (listen,
+                     "listen() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (recv,
+                     "recv() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (send,
+                     "send() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (recvfrom,
+                     "recvfrom() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (sendto,
+                     "sendto() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (setsockopt,
+                     "setsockopt() used without including <sys/socket.h>");
+    _GL_WARN_ON_USE (shutdown,
+                     "shutdown() used without including <sys/socket.h>");
+#  endif
+# endif
+# if !defined _@GUARD_PREFIX@_SYS_SELECT_H
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef select
+#   define select              select_used_without_including_sys_select_h
+#  else
+    _GL_WARN_ON_USE (select,
+                     "select() used without including <sys/select.h>");
+#  endif
+# endif
+#endif
+
+
+/* OS/2 EMX lacks these macros.  */
+#ifndef STDIN_FILENO
+# define STDIN_FILENO 0
+#endif
+#ifndef STDOUT_FILENO
+# define STDOUT_FILENO 1
+#endif
+#ifndef STDERR_FILENO
+# define STDERR_FILENO 2
+#endif
+
+/* Ensure *_OK macros exist.  */
+#ifndef F_OK
+# define F_OK 0
+# define X_OK 1
+# define W_OK 2
+# define R_OK 4
+#endif
+
+
+/* Declare overridden functions.  */
+
+
+#if @GNULIB_ACCESS@
+# if @REPLACE_ACCESS@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef access
+#   define access rpl_access
+#  endif
+_GL_FUNCDECL_RPL (access, int, (const char *file, int mode)
+                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (access, int, (const char *file, int mode));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef access
+#   define access _access
+#  endif
+_GL_CXXALIAS_MDA (access, int, (const char *file, int mode));
+# else
+_GL_CXXALIAS_SYS (access, int, (const char *file, int mode));
+# endif
+_GL_CXXALIASWARN (access);
+#elif defined GNULIB_POSIXCHECK
+# undef access
+# if HAVE_RAW_DECL_ACCESS
+/* The access() function is a security risk.  */
+_GL_WARN_ON_USE (access, "access does not always support X_OK - "
+                 "use gnulib module access for portability; "
+                 "also, this function is a security risk - "
+                 "use the gnulib module faccessat instead");
+# endif
+#elif @GNULIB_MDA_ACCESS@
+/* On native Windows, map 'access' to '_access', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::access always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef access
+#   define access _access
+#  endif
+_GL_CXXALIAS_MDA (access, int, (const char *file, int mode));
+# else
+_GL_CXXALIAS_SYS (access, int, (const char *file, int mode));
+# endif
+_GL_CXXALIASWARN (access);
+#endif
+
+
+#if @GNULIB_CHDIR@
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef chdir
+#   define chdir _chdir
+#  endif
+_GL_CXXALIAS_MDA (chdir, int, (const char *file));
+# else
+_GL_CXXALIAS_SYS (chdir, int, (const char *file) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIASWARN (chdir);
+#elif defined GNULIB_POSIXCHECK
+# undef chdir
+# if HAVE_RAW_DECL_CHDIR
+_GL_WARN_ON_USE (chown, "chdir is not always in <unistd.h> - "
+                 "use gnulib module chdir for portability");
+# endif
+#elif @GNULIB_MDA_CHDIR@
+/* On native Windows, map 'chdir' to '_chdir', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::chdir always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef chdir
+#   define chdir _chdir
+#  endif
+_GL_CXXALIAS_MDA (chdir, int, (const char *file));
+# else
+_GL_CXXALIAS_SYS (chdir, int, (const char *file) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIASWARN (chdir);
+#endif
+
+
+#if @GNULIB_CHOWN@
+/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
+   to GID (if GID is not -1).  Follow symbolic links.
+   Return 0 if successful, otherwise -1 and errno set.
+   See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/chown.html.  */
+# if @REPLACE_CHOWN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef chown
+#   define chown rpl_chown
+#  endif
+_GL_FUNCDECL_RPL (chown, int, (const char *file, uid_t uid, gid_t gid)
+                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (chown, int, (const char *file, uid_t uid, gid_t gid));
+# else
+#  if !@HAVE_CHOWN@
+_GL_FUNCDECL_SYS (chown, int, (const char *file, uid_t uid, gid_t gid)
+                              _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (chown, int, (const char *file, uid_t uid, gid_t gid));
+# endif
+_GL_CXXALIASWARN (chown);
+#elif defined GNULIB_POSIXCHECK
+# undef chown
+# if HAVE_RAW_DECL_CHOWN
+_GL_WARN_ON_USE (chown, "chown fails to follow symlinks on some systems and "
+                 "doesn't treat a uid or gid of -1 on some systems - "
+                 "use gnulib module chown for portability");
+# endif
+#endif
+
+
+#if @GNULIB_CLOSE@
+# if @REPLACE_CLOSE@
+/* Automatically included by modules that need a replacement for close.  */
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef close
+#   define close rpl_close
+#  endif
+_GL_FUNCDECL_RPL (close, int, (int fd));
+_GL_CXXALIAS_RPL (close, int, (int fd));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef close
+#   define close _close
+#  endif
+_GL_CXXALIAS_MDA (close, int, (int fd));
+# else
+_GL_CXXALIAS_SYS (close, int, (int fd));
+# endif
+_GL_CXXALIASWARN (close);
+#elif @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+# undef close
+# define close close_used_without_requesting_gnulib_module_close
+#elif defined GNULIB_POSIXCHECK
+# undef close
+/* Assume close is always declared.  */
+_GL_WARN_ON_USE (close, "close does not portably work on sockets - "
+                 "use gnulib module close for portability");
+#elif @GNULIB_MDA_CLOSE@
+/* On native Windows, map 'close' to '_close', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::close always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef close
+#   define close _close
+#  endif
+_GL_CXXALIAS_MDA (close, int, (int fd));
+# else
+_GL_CXXALIAS_SYS (close, int, (int fd));
+# endif
+_GL_CXXALIASWARN (close);
+#endif
+
+
+#if @GNULIB_COPY_FILE_RANGE@
+# if !@HAVE_COPY_FILE_RANGE@
+_GL_FUNCDECL_SYS (copy_file_range, ssize_t, (int ifd, off_t *ipos,
+                                             int ofd, off_t *opos,
+                                             size_t len, unsigned flags));
+_GL_CXXALIAS_SYS (copy_file_range, ssize_t, (int ifd, off_t *ipos,
+                                             int ofd, off_t *opos,
+                                             size_t len, unsigned flags));
+# endif
+_GL_CXXALIASWARN (copy_file_range);
+#elif defined GNULIB_POSIXCHECK
+# if HAVE_RAW_DECL_COPY_FILE_RANGE
+_GL_WARN_ON_USE (copy_file_range,
+                 "copy_file_range is unportable - "
+                 "use gnulib module copy_file_range for portability");
+# endif
+#endif
+
+
+#if @GNULIB_DUP@
+# if @REPLACE_DUP@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define dup rpl_dup
+#  endif
+_GL_FUNCDECL_RPL (dup, int, (int oldfd));
+_GL_CXXALIAS_RPL (dup, int, (int oldfd));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef dup
+#   define dup _dup
+#  endif
+_GL_CXXALIAS_MDA (dup, int, (int oldfd));
+# else
+_GL_CXXALIAS_SYS (dup, int, (int oldfd));
+# endif
+_GL_CXXALIASWARN (dup);
+#elif defined GNULIB_POSIXCHECK
+# undef dup
+# if HAVE_RAW_DECL_DUP
+_GL_WARN_ON_USE (dup, "dup is unportable - "
+                 "use gnulib module dup for portability");
+# endif
+#elif @GNULIB_MDA_DUP@
+/* On native Windows, map 'dup' to '_dup', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::dup always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef dup
+#   define dup _dup
+#  endif
+_GL_CXXALIAS_MDA (dup, int, (int oldfd));
+# else
+_GL_CXXALIAS_SYS (dup, int, (int oldfd));
+# endif
+_GL_CXXALIASWARN (dup);
+#endif
+
+
+#if @GNULIB_DUP2@
+/* Copy the file descriptor OLDFD into file descriptor NEWFD.  Do nothing if
+   NEWFD = OLDFD, otherwise close NEWFD first if it is open.
+   Return newfd if successful, otherwise -1 and errno set.
+   See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html>.  */
+# if @REPLACE_DUP2@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define dup2 rpl_dup2
+#  endif
+_GL_FUNCDECL_RPL (dup2, int, (int oldfd, int newfd));
+_GL_CXXALIAS_RPL (dup2, int, (int oldfd, int newfd));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef dup2
+#   define dup2 _dup2
+#  endif
+_GL_CXXALIAS_MDA (dup2, int, (int oldfd, int newfd));
+# else
+_GL_CXXALIAS_SYS (dup2, int, (int oldfd, int newfd));
+# endif
+_GL_CXXALIASWARN (dup2);
+#elif defined GNULIB_POSIXCHECK
+# undef dup2
+# if HAVE_RAW_DECL_DUP2
+_GL_WARN_ON_USE (dup2, "dup2 is unportable - "
+                 "use gnulib module dup2 for portability");
+# endif
+#elif @GNULIB_MDA_DUP2@
+/* On native Windows, map 'dup2' to '_dup2', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::dup2 always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef dup2
+#   define dup2 _dup2
+#  endif
+_GL_CXXALIAS_MDA (dup2, int, (int oldfd, int newfd));
+# else
+_GL_CXXALIAS_SYS (dup2, int, (int oldfd, int newfd));
+# endif
+_GL_CXXALIASWARN (dup2);
+#endif
+
+
+#if @GNULIB_DUP3@
+/* Copy the file descriptor OLDFD into file descriptor NEWFD, with the
+   specified flags.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   Close NEWFD first if it is open.
+   Return newfd if successful, otherwise -1 and errno set.
+   See the Linux man page at
+   <https://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>.  */
+# if @HAVE_DUP3@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define dup3 rpl_dup3
+#  endif
+_GL_FUNCDECL_RPL (dup3, int, (int oldfd, int newfd, int flags));
+_GL_CXXALIAS_RPL (dup3, int, (int oldfd, int newfd, int flags));
+# else
+_GL_FUNCDECL_SYS (dup3, int, (int oldfd, int newfd, int flags));
+_GL_CXXALIAS_SYS (dup3, int, (int oldfd, int newfd, int flags));
+# endif
+_GL_CXXALIASWARN (dup3);
+#elif defined GNULIB_POSIXCHECK
+# undef dup3
+# if HAVE_RAW_DECL_DUP3
+_GL_WARN_ON_USE (dup3, "dup3 is unportable - "
+                 "use gnulib module dup3 for portability");
+# endif
+#endif
+
+
+#if @GNULIB_ENVIRON@
+# if defined __CYGWIN__ && !defined __i386__
+/* The 'environ' variable is defined in a DLL. Therefore its declaration needs
+   the '__declspec(dllimport)' attribute, but the system's <unistd.h> lacks it.
+   This leads to a link error on 64-bit Cygwin when the option
+   -Wl,--disable-auto-import is in use.  */
+_GL_EXTERN_C __declspec(dllimport) char **environ;
+# endif
+# if !@HAVE_DECL_ENVIRON@
+/* Set of environment variables and values.  An array of strings of the form
+   "VARIABLE=VALUE", terminated with a NULL.  */
+#  if defined __APPLE__ && defined __MACH__
+#   include <TargetConditionals.h>
+#   if !TARGET_OS_IPHONE && !TARGET_IPHONE_SIMULATOR
+#    define _GL_USE_CRT_EXTERNS
+#   endif
+#  endif
+#  ifdef _GL_USE_CRT_EXTERNS
+#   include <crt_externs.h>
+#   define environ (*_NSGetEnviron ())
+#  else
+#   ifdef __cplusplus
+extern "C" {
+#   endif
+extern char **environ;
+#   ifdef __cplusplus
+}
+#   endif
+#  endif
+# endif
+#elif defined GNULIB_POSIXCHECK
+# if HAVE_RAW_DECL_ENVIRON
+_GL_UNISTD_INLINE char ***
+_GL_WARN_ON_USE_ATTRIBUTE ("environ is unportable - "
+                           "use gnulib module environ for portability")
+rpl_environ (void)
+{
+  return &environ;
+}
+#  undef environ
+#  define environ (*rpl_environ ())
+# endif
+#endif
+
+
+#if @GNULIB_EUIDACCESS@
+/* Like access(), except that it uses the effective user id and group id of
+   the current process.  */
+# if !@HAVE_EUIDACCESS@
+_GL_FUNCDECL_SYS (euidaccess, int, (const char *filename, int mode)
+                                   _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (euidaccess, int, (const char *filename, int mode));
+_GL_CXXALIASWARN (euidaccess);
+# if defined GNULIB_POSIXCHECK
+/* Like access(), this function is a security risk.  */
+_GL_WARN_ON_USE (euidaccess, "the euidaccess function is a security risk - "
+                 "use the gnulib module faccessat instead");
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef euidaccess
+# if HAVE_RAW_DECL_EUIDACCESS
+_GL_WARN_ON_USE (euidaccess, "euidaccess is unportable - "
+                 "use gnulib module euidaccess for portability");
+# endif
+#endif
+
+
+#if @GNULIB_EXECL@
+# if @REPLACE_EXECL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execl
+#   define execl rpl_execl
+#  endif
+_GL_FUNCDECL_RPL (execl, int, (const char *program, const char *arg, ...)
+                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (execl, int, (const char *program, const char *arg, ...));
+# else
+_GL_CXXALIAS_SYS (execl, int, (const char *program, const char *arg, ...));
+# endif
+_GL_CXXALIASWARN (execl);
+#elif defined GNULIB_POSIXCHECK
+# undef execl
+# if HAVE_RAW_DECL_EXECL
+_GL_WARN_ON_USE (execl, "execl behaves very differently on mingw - "
+                 "use gnulib module execl for portability");
+# endif
+#elif @GNULIB_MDA_EXECL@
+/* On native Windows, map 'execl' to '_execl', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::execl always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execl
+#   define execl _execl
+#  endif
+_GL_CXXALIAS_MDA (execl, intptr_t, (const char *program, const char *arg, ...));
+# else
+_GL_CXXALIAS_SYS (execl, int, (const char *program, const char *arg, ...));
+# endif
+_GL_CXXALIASWARN (execl);
+#endif
+
+#if @GNULIB_EXECLE@
+# if @REPLACE_EXECLE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execle
+#   define execle rpl_execle
+#  endif
+_GL_FUNCDECL_RPL (execle, int, (const char *program, const char *arg, ...)
+                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (execle, int, (const char *program, const char *arg, ...));
+# else
+_GL_CXXALIAS_SYS (execle, int, (const char *program, const char *arg, ...));
+# endif
+_GL_CXXALIASWARN (execle);
+#elif defined GNULIB_POSIXCHECK
+# undef execle
+# if HAVE_RAW_DECL_EXECLE
+_GL_WARN_ON_USE (execle, "execle behaves very differently on mingw - "
+                 "use gnulib module execle for portability");
+# endif
+#elif @GNULIB_MDA_EXECLE@
+/* On native Windows, map 'execle' to '_execle', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::execle always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execle
+#   define execle _execle
+#  endif
+_GL_CXXALIAS_MDA (execle, intptr_t,
+                  (const char *program, const char *arg, ...));
+# else
+_GL_CXXALIAS_SYS (execle, int, (const char *program, const char *arg, ...));
+# endif
+_GL_CXXALIASWARN (execle);
+#endif
+
+#if @GNULIB_EXECLP@
+# if @REPLACE_EXECLP@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execlp
+#   define execlp rpl_execlp
+#  endif
+_GL_FUNCDECL_RPL (execlp, int, (const char *program, const char *arg, ...)
+                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (execlp, int, (const char *program, const char *arg, ...));
+# else
+_GL_CXXALIAS_SYS (execlp, int, (const char *program, const char *arg, ...));
+# endif
+_GL_CXXALIASWARN (execlp);
+#elif defined GNULIB_POSIXCHECK
+# undef execlp
+# if HAVE_RAW_DECL_EXECLP
+_GL_WARN_ON_USE (execlp, "execlp behaves very differently on mingw - "
+                 "use gnulib module execlp for portability");
+# endif
+#elif @GNULIB_MDA_EXECLP@
+/* On native Windows, map 'execlp' to '_execlp', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::execlp always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execlp
+#   define execlp _execlp
+#  endif
+_GL_CXXALIAS_MDA (execlp, intptr_t,
+                  (const char *program, const char *arg, ...));
+# else
+_GL_CXXALIAS_SYS (execlp, int, (const char *program, const char *arg, ...));
+# endif
+_GL_CXXALIASWARN (execlp);
+#endif
+
+
+#if @GNULIB_EXECV@
+# if @REPLACE_EXECV@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execv
+#   define execv rpl_execv
+#  endif
+_GL_FUNCDECL_RPL (execv, int, (const char *program, char * const *argv)
+                              _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (execv, int, (const char *program, char * const *argv));
+# else
+_GL_CXXALIAS_SYS (execv, int, (const char *program, char * const *argv));
+# endif
+_GL_CXXALIASWARN (execv);
+#elif defined GNULIB_POSIXCHECK
+# undef execv
+# if HAVE_RAW_DECL_EXECV
+_GL_WARN_ON_USE (execv, "execv behaves very differently on mingw - "
+                 "use gnulib module execv for portability");
+# endif
+#elif @GNULIB_MDA_EXECV@
+/* On native Windows, map 'execv' to '_execv', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::execv always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execv
+#   define execv _execv
+#  endif
+_GL_CXXALIAS_MDA_CAST (execv, intptr_t,
+                       (const char *program, char * const *argv));
+# else
+_GL_CXXALIAS_SYS (execv, int, (const char *program, char * const *argv));
+# endif
+_GL_CXXALIASWARN (execv);
+#endif
+
+#if @GNULIB_EXECVE@
+# if @REPLACE_EXECVE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execve
+#   define execve rpl_execve
+#  endif
+_GL_FUNCDECL_RPL (execve, int,
+                  (const char *program, char * const *argv, char * const *env)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (execve, int,
+                  (const char *program, char * const *argv, char * const *env));
+# else
+_GL_CXXALIAS_SYS (execve, int,
+                  (const char *program, char * const *argv, char * const *env));
+# endif
+_GL_CXXALIASWARN (execve);
+#elif defined GNULIB_POSIXCHECK
+# undef execve
+# if HAVE_RAW_DECL_EXECVE
+_GL_WARN_ON_USE (execve, "execve behaves very differently on mingw - "
+                 "use gnulib module execve for portability");
+# endif
+#elif @GNULIB_MDA_EXECVE@
+/* On native Windows, map 'execve' to '_execve', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::execve always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execve
+#   define execve _execve
+#  endif
+_GL_CXXALIAS_MDA_CAST (execve, intptr_t,
+                       (const char *program, char * const *argv,
+                        char * const *env));
+# else
+_GL_CXXALIAS_SYS (execve, int,
+                  (const char *program, char * const *argv, char * const *env));
+# endif
+_GL_CXXALIASWARN (execve);
+#endif
+
+#if @GNULIB_EXECVP@
+# if @REPLACE_EXECVP@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execvp
+#   define execvp rpl_execvp
+#  endif
+_GL_FUNCDECL_RPL (execvp, int, (const char *program, char * const *argv)
+                               _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (execvp, int, (const char *program, char * const *argv));
+# else
+_GL_CXXALIAS_SYS (execvp, int, (const char *program, char * const *argv));
+# endif
+_GL_CXXALIASWARN (execvp);
+#elif defined GNULIB_POSIXCHECK
+# undef execvp
+# if HAVE_RAW_DECL_EXECVP
+_GL_WARN_ON_USE (execvp, "execvp behaves very differently on mingw - "
+                 "use gnulib module execvp for portability");
+# endif
+#elif @GNULIB_MDA_EXECVP@
+/* On native Windows, map 'execvp' to '_execvp', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::execvp always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execvp
+#   define execvp _execvp
+#  endif
+_GL_CXXALIAS_MDA_CAST (execvp, intptr_t,
+                       (const char *program, char * const *argv));
+# else
+_GL_CXXALIAS_SYS (execvp, int, (const char *program, char * const *argv));
+# endif
+_GL_CXXALIASWARN (execvp);
+#endif
+
+#if @GNULIB_EXECVPE@
+# if @REPLACE_EXECVPE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execvpe
+#   define execvpe rpl_execvpe
+#  endif
+_GL_FUNCDECL_RPL (execvpe, int,
+                  (const char *program, char * const *argv, char * const *env)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (execvpe, int,
+                  (const char *program, char * const *argv, char * const *env));
+# else
+#  if !@HAVE_DECL_EXECVPE@
+_GL_FUNCDECL_SYS (execvpe, int,
+                  (const char *program, char * const *argv, char * const *env)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (execvpe, int,
+                  (const char *program, char * const *argv, char * const *env));
+# endif
+_GL_CXXALIASWARN (execvpe);
+#elif defined GNULIB_POSIXCHECK
+# undef execvpe
+# if HAVE_RAW_DECL_EXECVPE
+_GL_WARN_ON_USE (execvpe, "execvpe behaves very differently on mingw - "
+                 "use gnulib module execvpe for portability");
+# endif
+#elif @GNULIB_MDA_EXECVPE@
+/* On native Windows, map 'execvpe' to '_execvpe', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::execvpe on all platforms that have
+   it.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef execvpe
+#   define execvpe _execvpe
+#  endif
+_GL_CXXALIAS_MDA_CAST (execvpe, intptr_t,
+                       (const char *program, char * const *argv,
+                        char * const *env));
+# elif @HAVE_EXECVPE@
+#  if !@HAVE_DECL_EXECVPE@
+_GL_FUNCDECL_SYS (execvpe, int,
+                  (const char *program, char * const *argv, char * const *env)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (execvpe, int,
+                  (const char *program, char * const *argv, char * const *env));
+# endif
+# if (defined _WIN32 && !defined __CYGWIN__) || @HAVE_EXECVPE@
+_GL_CXXALIASWARN (execvpe);
+# endif
+#endif
+
+
+#if @GNULIB_FACCESSAT@
+# if @REPLACE_FACCESSAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef faccessat
+#   define faccessat rpl_faccessat
+#  endif
+_GL_FUNCDECL_RPL (faccessat, int,
+                  (int fd, char const *name, int mode, int flag)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (faccessat, int,
+                  (int fd, char const *name, int mode, int flag));
+# else
+#  if !@HAVE_FACCESSAT@
+_GL_FUNCDECL_SYS (faccessat, int,
+                  (int fd, char const *file, int mode, int flag)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (faccessat, int,
+                  (int fd, char const *file, int mode, int flag));
+# endif
+_GL_CXXALIASWARN (faccessat);
+#elif defined GNULIB_POSIXCHECK
+# undef faccessat
+# if HAVE_RAW_DECL_FACCESSAT
+_GL_WARN_ON_USE (faccessat, "faccessat is not portable - "
+                 "use gnulib module faccessat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FCHDIR@
+/* Change the process' current working directory to the directory on which
+   the given file descriptor is open.
+   Return 0 if successful, otherwise -1 and errno set.
+   See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fchdir.html>.  */
+# if ! @HAVE_FCHDIR@
+_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
+
+/* Gnulib internal hooks needed to maintain the fchdir metadata.  */
+_GL_EXTERN_C int _gl_register_fd (int fd, const char *filename)
+     _GL_ARG_NONNULL ((2));
+_GL_EXTERN_C void _gl_unregister_fd (int fd);
+_GL_EXTERN_C int _gl_register_dup (int oldfd, int newfd);
+_GL_EXTERN_C const char *_gl_directory_name (int fd);
+
+# else
+#  if !@HAVE_DECL_FCHDIR@
+_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
+#  endif
+# endif
+_GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
+_GL_CXXALIASWARN (fchdir);
+#elif defined GNULIB_POSIXCHECK
+# undef fchdir
+# if HAVE_RAW_DECL_FCHDIR
+_GL_WARN_ON_USE (fchdir, "fchdir is unportable - "
+                 "use gnulib module fchdir for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FCHOWNAT@
+# if @REPLACE_FCHOWNAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fchownat
+#   define fchownat rpl_fchownat
+#  endif
+_GL_FUNCDECL_RPL (fchownat, int, (int fd, char const *file,
+                                  uid_t owner, gid_t group, int flag)
+                                 _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (fchownat, int, (int fd, char const *file,
+                                  uid_t owner, gid_t group, int flag));
+# else
+#  if !@HAVE_FCHOWNAT@
+_GL_FUNCDECL_SYS (fchownat, int, (int fd, char const *file,
+                                  uid_t owner, gid_t group, int flag)
+                                 _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (fchownat, int, (int fd, char const *file,
+                                  uid_t owner, gid_t group, int flag));
+# endif
+_GL_CXXALIASWARN (fchownat);
+#elif defined GNULIB_POSIXCHECK
+# undef fchownat
+# if HAVE_RAW_DECL_FCHOWNAT
+_GL_WARN_ON_USE (fchownat, "fchownat is not portable - "
+                 "use gnulib module fchownat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FDATASYNC@
+/* Synchronize changes to a file.
+   Return 0 if successful, otherwise -1 and errno set.
+   See POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fdatasync.html>.  */
+# if !@HAVE_FDATASYNC@ || !@HAVE_DECL_FDATASYNC@
+_GL_FUNCDECL_SYS (fdatasync, int, (int fd));
+# endif
+_GL_CXXALIAS_SYS (fdatasync, int, (int fd));
+_GL_CXXALIASWARN (fdatasync);
+#elif defined GNULIB_POSIXCHECK
+# undef fdatasync
+# if HAVE_RAW_DECL_FDATASYNC
+_GL_WARN_ON_USE (fdatasync, "fdatasync is unportable - "
+                 "use gnulib module fdatasync for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FSYNC@
+/* Synchronize changes, including metadata, to a file.
+   Return 0 if successful, otherwise -1 and errno set.
+   See POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fsync.html>.  */
+# if !@HAVE_FSYNC@
+_GL_FUNCDECL_SYS (fsync, int, (int fd));
+# endif
+_GL_CXXALIAS_SYS (fsync, int, (int fd));
+_GL_CXXALIASWARN (fsync);
+#elif defined GNULIB_POSIXCHECK
+# undef fsync
+# if HAVE_RAW_DECL_FSYNC
+_GL_WARN_ON_USE (fsync, "fsync is unportable - "
+                 "use gnulib module fsync for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FTRUNCATE@
+/* Change the size of the file to which FD is opened to become equal to LENGTH.
+   Return 0 if successful, otherwise -1 and errno set.
+   See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/ftruncate.html>.  */
+# if @REPLACE_FTRUNCATE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ftruncate
+#   define ftruncate rpl_ftruncate
+#  endif
+_GL_FUNCDECL_RPL (ftruncate, int, (int fd, off_t length));
+_GL_CXXALIAS_RPL (ftruncate, int, (int fd, off_t length));
+# else
+#  if !@HAVE_FTRUNCATE@
+_GL_FUNCDECL_SYS (ftruncate, int, (int fd, off_t length));
+#  endif
+_GL_CXXALIAS_SYS (ftruncate, int, (int fd, off_t length));
+# endif
+_GL_CXXALIASWARN (ftruncate);
+#elif defined GNULIB_POSIXCHECK
+# undef ftruncate
+# if HAVE_RAW_DECL_FTRUNCATE
+_GL_WARN_ON_USE (ftruncate, "ftruncate is unportable - "
+                 "use gnulib module ftruncate for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETCWD@
+/* Get the name of the current working directory, and put it in SIZE bytes
+   of BUF.
+   Return BUF if successful, or NULL if the directory couldn't be determined
+   or SIZE was too small.
+   See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html>.
+   Additionally, the gnulib module 'getcwd' guarantees the following GNU
+   extension: If BUF is NULL, an array is allocated with 'malloc'; the array
+   is SIZE bytes long, unless SIZE == 0, in which case it is as big as
+   necessary.  */
+# if @REPLACE_GETCWD@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define getcwd rpl_getcwd
+#  endif
+_GL_FUNCDECL_RPL (getcwd, char *, (char *buf, size_t size));
+_GL_CXXALIAS_RPL (getcwd, char *, (char *buf, size_t size));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getcwd
+#   define getcwd _getcwd
+#  endif
+_GL_CXXALIAS_MDA (getcwd, char *, (char *buf, size_t size));
+# else
+/* Need to cast, because on mingw, the second parameter is
+                                                   int size.  */
+_GL_CXXALIAS_SYS_CAST (getcwd, char *, (char *buf, size_t size));
+# endif
+_GL_CXXALIASWARN (getcwd);
+#elif defined GNULIB_POSIXCHECK
+# undef getcwd
+# if HAVE_RAW_DECL_GETCWD
+_GL_WARN_ON_USE (getcwd, "getcwd is unportable - "
+                 "use gnulib module getcwd for portability");
+# endif
+#elif @GNULIB_MDA_GETCWD@
+/* On native Windows, map 'getcwd' to '_getcwd', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::getcwd always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getcwd
+#   define getcwd _getcwd
+#  endif
+/* Need to cast, because on mingw, the second parameter is either
+   'int size' or 'size_t size'.  */
+_GL_CXXALIAS_MDA_CAST (getcwd, char *, (char *buf, size_t size));
+# else
+_GL_CXXALIAS_SYS_CAST (getcwd, char *, (char *buf, size_t size));
+# endif
+_GL_CXXALIASWARN (getcwd);
+#endif
+
+
+#if @GNULIB_GETDOMAINNAME@
+/* Return the NIS domain name of the machine.
+   WARNING! The NIS domain name is unrelated to the fully qualified host name
+            of the machine.  It is also unrelated to email addresses.
+   WARNING! The NIS domain name is usually the empty string or "(none)" when
+            not using NIS.
+
+   Put up to LEN bytes of the NIS domain name into NAME.
+   Null terminate it if the name is shorter than LEN.
+   If the NIS domain name is longer than LEN, set errno = EINVAL and return -1.
+   Return 0 if successful, otherwise set errno and return -1.  */
+# if @REPLACE_GETDOMAINNAME@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getdomainname
+#   define getdomainname rpl_getdomainname
+#  endif
+_GL_FUNCDECL_RPL (getdomainname, int, (char *name, size_t len)
+                                      _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (getdomainname, int, (char *name, size_t len));
+# else
+#  if !@HAVE_DECL_GETDOMAINNAME@
+_GL_FUNCDECL_SYS (getdomainname, int, (char *name, size_t len)
+                                      _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (getdomainname, int, (char *name, size_t len));
+# endif
+_GL_CXXALIASWARN (getdomainname);
+#elif defined GNULIB_POSIXCHECK
+# undef getdomainname
+# if HAVE_RAW_DECL_GETDOMAINNAME
+_GL_WARN_ON_USE (getdomainname, "getdomainname is unportable - "
+                 "use gnulib module getdomainname for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETDTABLESIZE@
+/* Return the maximum number of file descriptors in the current process.
+   In POSIX, this is same as sysconf (_SC_OPEN_MAX).  */
+# if @REPLACE_GETDTABLESIZE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getdtablesize
+#   define getdtablesize rpl_getdtablesize
+#  endif
+_GL_FUNCDECL_RPL (getdtablesize, int, (void));
+_GL_CXXALIAS_RPL (getdtablesize, int, (void));
+# else
+#  if !@HAVE_GETDTABLESIZE@
+_GL_FUNCDECL_SYS (getdtablesize, int, (void));
+#  endif
+/* Need to cast, because on AIX, the parameter list is
+                                           (...).  */
+_GL_CXXALIAS_SYS_CAST (getdtablesize, int, (void));
+# endif
+_GL_CXXALIASWARN (getdtablesize);
+#elif defined GNULIB_POSIXCHECK
+# undef getdtablesize
+# if HAVE_RAW_DECL_GETDTABLESIZE
+_GL_WARN_ON_USE (getdtablesize, "getdtablesize is unportable - "
+                 "use gnulib module getdtablesize for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETENTROPY@
+/* Fill a buffer with random bytes.  */
+# if !@HAVE_GETENTROPY@
+_GL_FUNCDECL_SYS (getentropy, int, (void *buffer, size_t length));
+# endif
+_GL_CXXALIAS_SYS (getentropy, int, (void *buffer, size_t length));
+_GL_CXXALIASWARN (getentropy);
+#elif defined GNULIB_POSIXCHECK
+# undef getentropy
+# if HAVE_RAW_DECL_GETENTROPY
+_GL_WARN_ON_USE (getentropy, "getentropy is unportable - "
+                 "use gnulib module getentropy for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETGROUPS@
+/* Return the supplemental groups that the current process belongs to.
+   It is unspecified whether the effective group id is in the list.
+   If N is 0, return the group count; otherwise, N describes how many
+   entries are available in GROUPS.  Return -1 and set errno if N is
+   not 0 and not large enough.  Fails with ENOSYS on some systems.  */
+# if @REPLACE_GETGROUPS@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getgroups
+#   define getgroups rpl_getgroups
+#  endif
+_GL_FUNCDECL_RPL (getgroups, int, (int n, gid_t *groups));
+_GL_CXXALIAS_RPL (getgroups, int, (int n, gid_t *groups));
+# else
+#  if !@HAVE_GETGROUPS@
+_GL_FUNCDECL_SYS (getgroups, int, (int n, gid_t *groups));
+#  endif
+_GL_CXXALIAS_SYS (getgroups, int, (int n, gid_t *groups));
+# endif
+_GL_CXXALIASWARN (getgroups);
+#elif defined GNULIB_POSIXCHECK
+# undef getgroups
+# if HAVE_RAW_DECL_GETGROUPS
+_GL_WARN_ON_USE (getgroups, "getgroups is unportable - "
+                 "use gnulib module getgroups for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETHOSTNAME@
+/* Return the standard host name of the machine.
+   WARNING! The host name may or may not be fully qualified.
+
+   Put up to LEN bytes of the host name into NAME.
+   Null terminate it if the name is shorter than LEN.
+   If the host name is longer than LEN, set errno = EINVAL and return -1.
+   Return 0 if successful, otherwise set errno and return -1.  */
+# if @UNISTD_H_HAVE_WINSOCK2_H@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef gethostname
+#   define gethostname rpl_gethostname
+#  endif
+_GL_FUNCDECL_RPL (gethostname, int, (char *name, size_t len)
+                                    _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (gethostname, int, (char *name, size_t len));
+# else
+#  if !@HAVE_GETHOSTNAME@
+_GL_FUNCDECL_SYS (gethostname, int, (char *name, size_t len)
+                                    _GL_ARG_NONNULL ((1)));
+#  endif
+/* Need to cast, because on Solaris 10 and OSF/1 5.1 systems, the second
+   parameter is
+                                                      int len.  */
+_GL_CXXALIAS_SYS_CAST (gethostname, int, (char *name, size_t len));
+# endif
+_GL_CXXALIASWARN (gethostname);
+#elif @UNISTD_H_HAVE_WINSOCK2_H@
+# undef gethostname
+# define gethostname gethostname_used_without_requesting_gnulib_module_gethostname
+#elif defined GNULIB_POSIXCHECK
+# undef gethostname
+# if HAVE_RAW_DECL_GETHOSTNAME
+_GL_WARN_ON_USE (gethostname, "gethostname is unportable - "
+                 "use gnulib module gethostname for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETLOGIN@
+/* Returns the user's login name, or NULL if it cannot be found.  Upon error,
+   returns NULL with errno set.
+
+   See <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getlogin.html>.
+
+   Most programs don't need to use this function, because the information is
+   available through environment variables:
+     ${LOGNAME-$USER}        on Unix platforms,
+     $USERNAME               on native Windows platforms.
+ */
+# if !@HAVE_DECL_GETLOGIN@
+_GL_FUNCDECL_SYS (getlogin, char *, (void));
+# endif
+_GL_CXXALIAS_SYS (getlogin, char *, (void));
+_GL_CXXALIASWARN (getlogin);
+#elif defined GNULIB_POSIXCHECK
+# undef getlogin
+# if HAVE_RAW_DECL_GETLOGIN
+_GL_WARN_ON_USE (getlogin, "getlogin is unportable - "
+                 "use gnulib module getlogin for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETLOGIN_R@
+/* Copies the user's login name to NAME.
+   The array pointed to by NAME has room for SIZE bytes.
+
+   Returns 0 if successful.  Upon error, an error number is returned, or -1 in
+   the case that the login name cannot be found but no specific error is
+   provided (this case is hopefully rare but is left open by the POSIX spec).
+
+   See <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getlogin.html>.
+
+   Most programs don't need to use this function, because the information is
+   available through environment variables:
+     ${LOGNAME-$USER}        on Unix platforms,
+     $USERNAME               on native Windows platforms.
+ */
+# if @REPLACE_GETLOGIN_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define getlogin_r rpl_getlogin_r
+#  endif
+_GL_FUNCDECL_RPL (getlogin_r, int, (char *name, size_t size)
+                                   _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (getlogin_r, int, (char *name, size_t size));
+# else
+#  if !@HAVE_DECL_GETLOGIN_R@
+_GL_FUNCDECL_SYS (getlogin_r, int, (char *name, size_t size)
+                                   _GL_ARG_NONNULL ((1)));
+#  endif
+/* Need to cast, because on Solaris 10 systems, the second argument is
+                                                     int size.  */
+_GL_CXXALIAS_SYS_CAST (getlogin_r, int, (char *name, size_t size));
+# endif
+_GL_CXXALIASWARN (getlogin_r);
+#elif defined GNULIB_POSIXCHECK
+# undef getlogin_r
+# if HAVE_RAW_DECL_GETLOGIN_R
+_GL_WARN_ON_USE (getlogin_r, "getlogin_r is unportable - "
+                 "use gnulib module getlogin_r for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETPAGESIZE@
+# if @REPLACE_GETPAGESIZE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define getpagesize rpl_getpagesize
+#  endif
+_GL_FUNCDECL_RPL (getpagesize, int, (void));
+_GL_CXXALIAS_RPL (getpagesize, int, (void));
+# else
+/* On HP-UX, getpagesize exists, but it is not declared in <unistd.h> even if
+   the compiler options -D_HPUX_SOURCE -D_XOPEN_SOURCE=600 are used.  */
+#  if defined __hpux
+_GL_FUNCDECL_SYS (getpagesize, int, (void));
+#  endif
+#  if !@HAVE_GETPAGESIZE@
+#   if !defined getpagesize
+/* This is for POSIX systems.  */
+#    if !defined _gl_getpagesize && defined _SC_PAGESIZE
+#     if ! (defined __VMS && __VMS_VER < 70000000)
+#      define _gl_getpagesize() sysconf (_SC_PAGESIZE)
+#     endif
+#    endif
+/* This is for older VMS.  */
+#    if !defined _gl_getpagesize && defined __VMS
+#     ifdef __ALPHA
+#      define _gl_getpagesize() 8192
+#     else
+#      define _gl_getpagesize() 512
+#     endif
+#    endif
+/* This is for BeOS.  */
+#    if !defined _gl_getpagesize && @HAVE_OS_H@
+#     include <OS.h>
+#     if defined B_PAGE_SIZE
+#      define _gl_getpagesize() B_PAGE_SIZE
+#     endif
+#    endif
+/* This is for AmigaOS4.0.  */
+#    if !defined _gl_getpagesize && defined __amigaos4__
+#     define _gl_getpagesize() 2048
+#    endif
+/* This is for older Unix systems.  */
+#    if !defined _gl_getpagesize && @HAVE_SYS_PARAM_H@
+#     include <sys/param.h>
+#     ifdef EXEC_PAGESIZE
+#      define _gl_getpagesize() EXEC_PAGESIZE
+#     else
+#      ifdef NBPG
+#       ifndef CLSIZE
+#        define CLSIZE 1
+#       endif
+#       define _gl_getpagesize() (NBPG * CLSIZE)
+#      else
+#       ifdef NBPC
+#        define _gl_getpagesize() NBPC
+#       endif
+#      endif
+#     endif
+#    endif
+#    if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#     define getpagesize() _gl_getpagesize ()
+#    else
+#     if !GNULIB_defined_getpagesize_function
+_GL_UNISTD_INLINE int
+getpagesize ()
+{
+  return _gl_getpagesize ();
+}
+#      define GNULIB_defined_getpagesize_function 1
+#     endif
+#    endif
+#   endif
+#  endif
+/* Need to cast, because on Cygwin 1.5.x systems, the return type is size_t.  */
+_GL_CXXALIAS_SYS_CAST (getpagesize, int, (void));
+# endif
+# if @HAVE_DECL_GETPAGESIZE@
+_GL_CXXALIASWARN (getpagesize);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getpagesize
+# if HAVE_RAW_DECL_GETPAGESIZE
+_GL_WARN_ON_USE (getpagesize, "getpagesize is unportable - "
+                 "use gnulib module getpagesize for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETPASS@
+/* Function getpass() from module 'getpass':
+     Read a password from /dev/tty or stdin.
+   Function getpass() from module 'getpass-gnu':
+     Read a password of arbitrary length from /dev/tty or stdin.  */
+# if @REPLACE_GETPASS@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getpass
+#   define getpass rpl_getpass
+#  endif
+_GL_FUNCDECL_RPL (getpass, char *, (const char *prompt)
+                                   _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (getpass, char *, (const char *prompt));
+# else
+#  if !@HAVE_GETPASS@
+_GL_FUNCDECL_SYS (getpass, char *, (const char *prompt)
+                                   _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (getpass, char *, (const char *prompt));
+# endif
+_GL_CXXALIASWARN (getpass);
+#elif defined GNULIB_POSIXCHECK
+# undef getpass
+# if HAVE_RAW_DECL_GETPASS
+_GL_WARN_ON_USE (getpass, "getpass is unportable - "
+                 "use gnulib module getpass or getpass-gnu for portability");
+# endif
+#endif
+
+
+#if @GNULIB_MDA_GETPID@
+/* On native Windows, map 'getpid' to '_getpid', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::getpid always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getpid
+#   define getpid _getpid
+#  endif
+_GL_CXXALIAS_MDA (getpid, int, (void));
+# else
+_GL_CXXALIAS_SYS (getpid, pid_t, (void));
+# endif
+_GL_CXXALIASWARN (getpid);
+#endif
+
+
+#if @GNULIB_GETUSERSHELL@
+/* Return the next valid login shell on the system, or NULL when the end of
+   the list has been reached.  */
+# if !@HAVE_DECL_GETUSERSHELL@
+_GL_FUNCDECL_SYS (getusershell, char *, (void));
+# endif
+_GL_CXXALIAS_SYS (getusershell, char *, (void));
+_GL_CXXALIASWARN (getusershell);
+#elif defined GNULIB_POSIXCHECK
+# undef getusershell
+# if HAVE_RAW_DECL_GETUSERSHELL
+_GL_WARN_ON_USE (getusershell, "getusershell is unportable - "
+                 "use gnulib module getusershell for portability");
+# endif
+#endif
+
+#if @GNULIB_GETUSERSHELL@
+/* Rewind to pointer that is advanced at each getusershell() call.  */
+# if !@HAVE_DECL_GETUSERSHELL@
+_GL_FUNCDECL_SYS (setusershell, void, (void));
+# endif
+_GL_CXXALIAS_SYS (setusershell, void, (void));
+_GL_CXXALIASWARN (setusershell);
+#elif defined GNULIB_POSIXCHECK
+# undef setusershell
+# if HAVE_RAW_DECL_SETUSERSHELL
+_GL_WARN_ON_USE (setusershell, "setusershell is unportable - "
+                 "use gnulib module getusershell for portability");
+# endif
+#endif
+
+#if @GNULIB_GETUSERSHELL@
+/* Free the pointer that is advanced at each getusershell() call and
+   associated resources.  */
+# if !@HAVE_DECL_GETUSERSHELL@
+_GL_FUNCDECL_SYS (endusershell, void, (void));
+# endif
+_GL_CXXALIAS_SYS (endusershell, void, (void));
+_GL_CXXALIASWARN (endusershell);
+#elif defined GNULIB_POSIXCHECK
+# undef endusershell
+# if HAVE_RAW_DECL_ENDUSERSHELL
+_GL_WARN_ON_USE (endusershell, "endusershell is unportable - "
+                 "use gnulib module getusershell for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GROUP_MEMBER@
+/* Determine whether group id is in calling user's group list.  */
+# if !@HAVE_GROUP_MEMBER@
+_GL_FUNCDECL_SYS (group_member, int, (gid_t gid));
+# endif
+_GL_CXXALIAS_SYS (group_member, int, (gid_t gid));
+_GL_CXXALIASWARN (group_member);
+#elif defined GNULIB_POSIXCHECK
+# undef group_member
+# if HAVE_RAW_DECL_GROUP_MEMBER
+_GL_WARN_ON_USE (group_member, "group_member is unportable - "
+                 "use gnulib module group-member for portability");
+# endif
+#endif
+
+
+#if @GNULIB_ISATTY@
+# if @REPLACE_ISATTY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef isatty
+#   define isatty rpl_isatty
+#  endif
+#  define GNULIB_defined_isatty 1
+_GL_FUNCDECL_RPL (isatty, int, (int fd));
+_GL_CXXALIAS_RPL (isatty, int, (int fd));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef isatty
+#   define isatty _isatty
+#  endif
+_GL_CXXALIAS_MDA (isatty, int, (int fd));
+# else
+_GL_CXXALIAS_SYS (isatty, int, (int fd));
+# endif
+_GL_CXXALIASWARN (isatty);
+#elif defined GNULIB_POSIXCHECK
+# undef isatty
+# if HAVE_RAW_DECL_ISATTY
+_GL_WARN_ON_USE (isatty, "isatty has portability problems on native Windows - "
+                 "use gnulib module isatty for portability");
+# endif
+#elif @GNULIB_MDA_ISATTY@
+/* On native Windows, map 'isatty' to '_isatty', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::isatty always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef isatty
+#   define isatty _isatty
+#  endif
+_GL_CXXALIAS_MDA (isatty, int, (int fd));
+# else
+_GL_CXXALIAS_SYS (isatty, int, (int fd));
+# endif
+_GL_CXXALIASWARN (isatty);
+#endif
+
+
+#if @GNULIB_LCHOWN@
+/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
+   to GID (if GID is not -1).  Do not follow symbolic links.
+   Return 0 if successful, otherwise -1 and errno set.
+   See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/lchown.html>.  */
+# if @REPLACE_LCHOWN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef lchown
+#   define lchown rpl_lchown
+#  endif
+_GL_FUNCDECL_RPL (lchown, int, (char const *file, uid_t owner, gid_t group)
+                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (lchown, int, (char const *file, uid_t owner, gid_t group));
+# else
+#  if !@HAVE_LCHOWN@
+_GL_FUNCDECL_SYS (lchown, int, (char const *file, uid_t owner, gid_t group)
+                               _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (lchown, int, (char const *file, uid_t owner, gid_t group));
+# endif
+_GL_CXXALIASWARN (lchown);
+#elif defined GNULIB_POSIXCHECK
+# undef lchown
+# if HAVE_RAW_DECL_LCHOWN
+_GL_WARN_ON_USE (lchown, "lchown is unportable to pre-POSIX.1-2001 systems - "
+                 "use gnulib module lchown for portability");
+# endif
+#endif
+
+
+#if @GNULIB_LINK@
+/* Create a new hard link for an existing file.
+   Return 0 if successful, otherwise -1 and errno set.
+   See POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html>.  */
+# if @REPLACE_LINK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define link rpl_link
+#  endif
+_GL_FUNCDECL_RPL (link, int, (const char *path1, const char *path2)
+                             _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (link, int, (const char *path1, const char *path2));
+# else
+#  if !@HAVE_LINK@
+_GL_FUNCDECL_SYS (link, int, (const char *path1, const char *path2)
+                             _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (link, int, (const char *path1, const char *path2));
+# endif
+_GL_CXXALIASWARN (link);
+#elif defined GNULIB_POSIXCHECK
+# undef link
+# if HAVE_RAW_DECL_LINK
+_GL_WARN_ON_USE (link, "link is unportable - "
+                 "use gnulib module link for portability");
+# endif
+#endif
+
+
+#if @GNULIB_LINKAT@
+/* Create a new hard link for an existing file, relative to two
+   directories.  FLAG controls whether symlinks are followed.
+   Return 0 if successful, otherwise -1 and errno set.  */
+# if @REPLACE_LINKAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef linkat
+#   define linkat rpl_linkat
+#  endif
+_GL_FUNCDECL_RPL (linkat, int,
+                  (int fd1, const char *path1, int fd2, const char *path2,
+                   int flag)
+                  _GL_ARG_NONNULL ((2, 4)));
+_GL_CXXALIAS_RPL (linkat, int,
+                  (int fd1, const char *path1, int fd2, const char *path2,
+                   int flag));
+# else
+#  if !@HAVE_LINKAT@
+_GL_FUNCDECL_SYS (linkat, int,
+                  (int fd1, const char *path1, int fd2, const char *path2,
+                   int flag)
+                  _GL_ARG_NONNULL ((2, 4)));
+#  endif
+_GL_CXXALIAS_SYS (linkat, int,
+                  (int fd1, const char *path1, int fd2, const char *path2,
+                   int flag));
+# endif
+_GL_CXXALIASWARN (linkat);
+#elif defined GNULIB_POSIXCHECK
+# undef linkat
+# if HAVE_RAW_DECL_LINKAT
+_GL_WARN_ON_USE (linkat, "linkat is unportable - "
+                 "use gnulib module linkat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_LSEEK@
+/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
+   Return the new offset if successful, otherwise -1 and errno set.
+   See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/lseek.html>.  */
+# if @REPLACE_LSEEK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define lseek rpl_lseek
+#  endif
+_GL_FUNCDECL_RPL (lseek, off_t, (int fd, off_t offset, int whence));
+_GL_CXXALIAS_RPL (lseek, off_t, (int fd, off_t offset, int whence));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef lseek
+#   define lseek _lseek
+#  endif
+_GL_CXXALIAS_MDA (lseek, off_t, (int fd, off_t offset, int whence));
+# else
+_GL_CXXALIAS_SYS (lseek, off_t, (int fd, off_t offset, int whence));
+# endif
+_GL_CXXALIASWARN (lseek);
+#elif defined GNULIB_POSIXCHECK
+# undef lseek
+# if HAVE_RAW_DECL_LSEEK
+_GL_WARN_ON_USE (lseek, "lseek does not fail with ESPIPE on pipes on some "
+                 "systems - use gnulib module lseek for portability");
+# endif
+#elif @GNULIB_MDA_LSEEK@
+/* On native Windows, map 'lseek' to '_lseek', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::lseek always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef lseek
+#   define lseek _lseek
+#  endif
+_GL_CXXALIAS_MDA (lseek, long, (int fd, long offset, int whence));
+# else
+_GL_CXXALIAS_SYS (lseek, off_t, (int fd, off_t offset, int whence));
+# endif
+_GL_CXXALIASWARN (lseek);
+#endif
+
+
+#if @GNULIB_PIPE@
+/* Create a pipe, defaulting to O_BINARY mode.
+   Store the read-end as fd[0] and the write-end as fd[1].
+   Return 0 upon success, or -1 with errno set upon failure.  */
+# if !@HAVE_PIPE@
+_GL_FUNCDECL_SYS (pipe, int, (int fd[2]) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (pipe, int, (int fd[2]));
+_GL_CXXALIASWARN (pipe);
+#elif defined GNULIB_POSIXCHECK
+# undef pipe
+# if HAVE_RAW_DECL_PIPE
+_GL_WARN_ON_USE (pipe, "pipe is unportable - "
+                 "use gnulib module pipe-posix for portability");
+# endif
+#endif
+
+
+#if @GNULIB_PIPE2@
+/* Create a pipe, applying the given flags when opening the read-end of the
+   pipe and the write-end of the pipe.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   Store the read-end as fd[0] and the write-end as fd[1].
+   Return 0 upon success, or -1 with errno set upon failure.
+   See also the Linux man page at
+   <https://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>.  */
+# if @HAVE_PIPE2@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define pipe2 rpl_pipe2
+#  endif
+_GL_FUNCDECL_RPL (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pipe2, int, (int fd[2], int flags));
+# else
+_GL_FUNCDECL_SYS (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_SYS (pipe2, int, (int fd[2], int flags));
+# endif
+_GL_CXXALIASWARN (pipe2);
+#elif defined GNULIB_POSIXCHECK
+# undef pipe2
+# if HAVE_RAW_DECL_PIPE2
+_GL_WARN_ON_USE (pipe2, "pipe2 is unportable - "
+                 "use gnulib module pipe2 for portability");
+# endif
+#endif
+
+
+#if @GNULIB_PREAD@
+/* Read at most BUFSIZE bytes from FD into BUF, starting at OFFSET.
+   Return the number of bytes placed into BUF if successful, otherwise
+   set errno and return -1.  0 indicates EOF.
+   See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/pread.html>.  */
+# if @REPLACE_PREAD@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pread
+#   define pread rpl_pread
+#  endif
+_GL_FUNCDECL_RPL (pread, ssize_t,
+                  (int fd, void *buf, size_t bufsize, off_t offset)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (pread, ssize_t,
+                  (int fd, void *buf, size_t bufsize, off_t offset));
+# else
+#  if !@HAVE_PREAD@
+_GL_FUNCDECL_SYS (pread, ssize_t,
+                  (int fd, void *buf, size_t bufsize, off_t offset)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (pread, ssize_t,
+                  (int fd, void *buf, size_t bufsize, off_t offset));
+# endif
+_GL_CXXALIASWARN (pread);
+#elif defined GNULIB_POSIXCHECK
+# undef pread
+# if HAVE_RAW_DECL_PREAD
+_GL_WARN_ON_USE (pread, "pread is unportable - "
+                 "use gnulib module pread for portability");
+# endif
+#endif
+
+
+#if @GNULIB_PWRITE@
+/* Write at most BUFSIZE bytes from BUF into FD, starting at OFFSET.
+   Return the number of bytes written if successful, otherwise
+   set errno and return -1.  0 indicates nothing written.  See the
+   POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/pwrite.html>.  */
+# if @REPLACE_PWRITE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pwrite
+#   define pwrite rpl_pwrite
+#  endif
+_GL_FUNCDECL_RPL (pwrite, ssize_t,
+                  (int fd, const void *buf, size_t bufsize, off_t offset)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (pwrite, ssize_t,
+                  (int fd, const void *buf, size_t bufsize, off_t offset));
+# else
+#  if !@HAVE_PWRITE@
+_GL_FUNCDECL_SYS (pwrite, ssize_t,
+                  (int fd, const void *buf, size_t bufsize, off_t offset)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (pwrite, ssize_t,
+                  (int fd, const void *buf, size_t bufsize, off_t offset));
+# endif
+_GL_CXXALIASWARN (pwrite);
+#elif defined GNULIB_POSIXCHECK
+# undef pwrite
+# if HAVE_RAW_DECL_PWRITE
+_GL_WARN_ON_USE (pwrite, "pwrite is unportable - "
+                 "use gnulib module pwrite for portability");
+# endif
+#endif
+
+
+#if @GNULIB_READ@
+/* Read up to COUNT bytes from file descriptor FD into the buffer starting
+   at BUF.  See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/read.html>.  */
+# if @REPLACE_READ@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef read
+#   define read rpl_read
+#  endif
+_GL_FUNCDECL_RPL (read, ssize_t, (int fd, void *buf, size_t count)
+                                 _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (read, ssize_t, (int fd, void *buf, size_t count));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef read
+#   define read _read
+#  endif
+_GL_CXXALIAS_MDA (read, ssize_t, (int fd, void *buf, size_t count));
+# else
+_GL_CXXALIAS_SYS (read, ssize_t, (int fd, void *buf, size_t count));
+# endif
+_GL_CXXALIASWARN (read);
+#elif @GNULIB_MDA_READ@
+/* On native Windows, map 'read' to '_read', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::read always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef read
+#   define read _read
+#  endif
+#  ifdef __MINGW32__
+_GL_CXXALIAS_MDA (read, int, (int fd, void *buf, unsigned int count));
+#  else
+_GL_CXXALIAS_MDA (read, ssize_t, (int fd, void *buf, unsigned int count));
+#  endif
+# else
+_GL_CXXALIAS_SYS (read, ssize_t, (int fd, void *buf, size_t count));
+# endif
+_GL_CXXALIASWARN (read);
+#endif
+
+
+#if @GNULIB_READLINK@
+/* Read the contents of the symbolic link FILE and place the first BUFSIZE
+   bytes of it into BUF.  Return the number of bytes placed into BUF if
+   successful, otherwise -1 and errno set.
+   See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>.  */
+# if @REPLACE_READLINK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define readlink rpl_readlink
+#  endif
+_GL_FUNCDECL_RPL (readlink, ssize_t,
+                  (const char *restrict file,
+                   char *restrict buf, size_t bufsize)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (readlink, ssize_t,
+                  (const char *restrict file,
+                   char *restrict buf, size_t bufsize));
+# else
+#  if !@HAVE_READLINK@
+_GL_FUNCDECL_SYS (readlink, ssize_t,
+                  (const char *restrict file,
+                   char *restrict buf, size_t bufsize)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (readlink, ssize_t,
+                  (const char *restrict file,
+                   char *restrict buf, size_t bufsize));
+# endif
+_GL_CXXALIASWARN (readlink);
+#elif defined GNULIB_POSIXCHECK
+# undef readlink
+# if HAVE_RAW_DECL_READLINK
+_GL_WARN_ON_USE (readlink, "readlink is unportable - "
+                 "use gnulib module readlink for portability");
+# endif
+#endif
+
+
+#if @GNULIB_READLINKAT@
+# if @REPLACE_READLINKAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define readlinkat rpl_readlinkat
+#  endif
+_GL_FUNCDECL_RPL (readlinkat, ssize_t,
+                  (int fd, char const *restrict file,
+                   char *restrict buf, size_t len)
+                  _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_RPL (readlinkat, ssize_t,
+                  (int fd, char const *restrict file,
+                   char *restrict buf, size_t len));
+# else
+#  if !@HAVE_READLINKAT@
+_GL_FUNCDECL_SYS (readlinkat, ssize_t,
+                  (int fd, char const *restrict file,
+                   char *restrict buf, size_t len)
+                  _GL_ARG_NONNULL ((2, 3)));
+#  endif
+_GL_CXXALIAS_SYS (readlinkat, ssize_t,
+                  (int fd, char const *restrict file,
+                   char *restrict buf, size_t len));
+# endif
+_GL_CXXALIASWARN (readlinkat);
+#elif defined GNULIB_POSIXCHECK
+# undef readlinkat
+# if HAVE_RAW_DECL_READLINKAT
+_GL_WARN_ON_USE (readlinkat, "readlinkat is not portable - "
+                 "use gnulib module readlinkat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_RMDIR@
+/* Remove the directory DIR.  */
+# if @REPLACE_RMDIR@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define rmdir rpl_rmdir
+#  endif
+_GL_FUNCDECL_RPL (rmdir, int, (char const *name) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (rmdir, int, (char const *name));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef rmdir
+#   define rmdir _rmdir
+#  endif
+_GL_CXXALIAS_MDA (rmdir, int, (char const *name));
+# else
+_GL_CXXALIAS_SYS (rmdir, int, (char const *name));
+# endif
+_GL_CXXALIASWARN (rmdir);
+#elif defined GNULIB_POSIXCHECK
+# undef rmdir
+# if HAVE_RAW_DECL_RMDIR
+_GL_WARN_ON_USE (rmdir, "rmdir is unportable - "
+                 "use gnulib module rmdir for portability");
+# endif
+#elif @GNULIB_MDA_RMDIR@
+/* On native Windows, map 'rmdir' to '_rmdir', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::rmdir always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef rmdir
+#   define rmdir _rmdir
+#  endif
+_GL_CXXALIAS_MDA (rmdir, int, (char const *name));
+# else
+_GL_CXXALIAS_SYS (rmdir, int, (char const *name));
+# endif
+_GL_CXXALIASWARN (rmdir);
+#endif
+
+
+#if @GNULIB_SETHOSTNAME@
+/* Set the host name of the machine.
+   The host name may or may not be fully qualified.
+
+   Put LEN bytes of NAME into the host name.
+   Return 0 if successful, otherwise, set errno and return -1.
+
+   Platforms with no ability to set the hostname return -1 and set
+   errno = ENOSYS.  */
+# if !@HAVE_SETHOSTNAME@ || !@HAVE_DECL_SETHOSTNAME@
+_GL_FUNCDECL_SYS (sethostname, int, (const char *name, size_t len)
+                                    _GL_ARG_NONNULL ((1)));
+# endif
+/* Need to cast, because on Solaris 11 2011-10, Mac OS X 10.5, IRIX 6.5
+   and FreeBSD 6.4 the second parameter is int.  On Solaris 11
+   2011-10, the first parameter is not const.  */
+_GL_CXXALIAS_SYS_CAST (sethostname, int, (const char *name, size_t len));
+_GL_CXXALIASWARN (sethostname);
+#elif defined GNULIB_POSIXCHECK
+# undef sethostname
+# if HAVE_RAW_DECL_SETHOSTNAME
+_GL_WARN_ON_USE (sethostname, "sethostname is unportable - "
+                 "use gnulib module sethostname for portability");
+# endif
+#endif
+
+
+#if @GNULIB_SLEEP@
+/* Pause the execution of the current thread for N seconds.
+   Returns the number of seconds left to sleep.
+   See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/sleep.html>.  */
+# if @REPLACE_SLEEP@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef sleep
+#   define sleep rpl_sleep
+#  endif
+_GL_FUNCDECL_RPL (sleep, unsigned int, (unsigned int n));
+_GL_CXXALIAS_RPL (sleep, unsigned int, (unsigned int n));
+# else
+#  if !@HAVE_SLEEP@
+_GL_FUNCDECL_SYS (sleep, unsigned int, (unsigned int n));
+#  endif
+_GL_CXXALIAS_SYS (sleep, unsigned int, (unsigned int n));
+# endif
+_GL_CXXALIASWARN (sleep);
+#elif defined GNULIB_POSIXCHECK
+# undef sleep
+# if HAVE_RAW_DECL_SLEEP
+_GL_WARN_ON_USE (sleep, "sleep is unportable - "
+                 "use gnulib module sleep for portability");
+# endif
+#endif
+
+
+#if @GNULIB_MDA_SWAB@
+/* On native Windows, map 'swab' to '_swab', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::swab always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef swab
+#   define swab _swab
+#  endif
+/* Need to cast, because in old mingw the arguments are
+                             (const char *from, char *to, size_t n).  */
+_GL_CXXALIAS_MDA_CAST (swab, void, (char *from, char *to, int n));
+# else
+#  if defined __hpux /* HP-UX */
+_GL_CXXALIAS_SYS (swab, void, (const char *from, char *to, int n));
+#  elif defined __sun && !defined _XPG4 /* Solaris */
+_GL_CXXALIAS_SYS (swab, void, (const char *from, char *to, ssize_t n));
+#  else
+_GL_CXXALIAS_SYS (swab, void, (const void *from, void *to, ssize_t n));
+#  endif
+# endif
+_GL_CXXALIASWARN (swab);
+#endif
+
+
+#if @GNULIB_SYMLINK@
+# if @REPLACE_SYMLINK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef symlink
+#   define symlink rpl_symlink
+#  endif
+_GL_FUNCDECL_RPL (symlink, int, (char const *contents, char const *file)
+                                _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (symlink, int, (char const *contents, char const *file));
+# else
+#  if !@HAVE_SYMLINK@
+_GL_FUNCDECL_SYS (symlink, int, (char const *contents, char const *file)
+                                _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (symlink, int, (char const *contents, char const *file));
+# endif
+_GL_CXXALIASWARN (symlink);
+#elif defined GNULIB_POSIXCHECK
+# undef symlink
+# if HAVE_RAW_DECL_SYMLINK
+_GL_WARN_ON_USE (symlink, "symlink is not portable - "
+                 "use gnulib module symlink for portability");
+# endif
+#endif
+
+
+#if @GNULIB_SYMLINKAT@
+# if @REPLACE_SYMLINKAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef symlinkat
+#   define symlinkat rpl_symlinkat
+#  endif
+_GL_FUNCDECL_RPL (symlinkat, int,
+                  (char const *contents, int fd, char const *file)
+                  _GL_ARG_NONNULL ((1, 3)));
+_GL_CXXALIAS_RPL (symlinkat, int,
+                  (char const *contents, int fd, char const *file));
+# else
+#  if !@HAVE_SYMLINKAT@
+_GL_FUNCDECL_SYS (symlinkat, int,
+                  (char const *contents, int fd, char const *file)
+                  _GL_ARG_NONNULL ((1, 3)));
+#  endif
+_GL_CXXALIAS_SYS (symlinkat, int,
+                  (char const *contents, int fd, char const *file));
+# endif
+_GL_CXXALIASWARN (symlinkat);
+#elif defined GNULIB_POSIXCHECK
+# undef symlinkat
+# if HAVE_RAW_DECL_SYMLINKAT
+_GL_WARN_ON_USE (symlinkat, "symlinkat is not portable - "
+                 "use gnulib module symlinkat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_TRUNCATE@
+/* Change the size of the file designated by FILENAME to become equal to LENGTH.
+   Return 0 if successful, otherwise -1 and errno set.
+   See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/truncate.html>.  */
+# if @REPLACE_TRUNCATE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef truncate
+#   define truncate rpl_truncate
+#  endif
+_GL_FUNCDECL_RPL (truncate, int, (const char *filename, off_t length)
+                                 _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (truncate, int, (const char *filename, off_t length));
+# else
+#  if !@HAVE_DECL_TRUNCATE@
+_GL_FUNCDECL_SYS (truncate, int, (const char *filename, off_t length)
+                                 _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (truncate, int, (const char *filename, off_t length));
+# endif
+_GL_CXXALIASWARN (truncate);
+#elif defined GNULIB_POSIXCHECK
+# undef truncate
+# if HAVE_RAW_DECL_TRUNCATE
+_GL_WARN_ON_USE (truncate, "truncate is unportable - "
+                 "use gnulib module truncate for portability");
+# endif
+#endif
+
+
+#if @GNULIB_TTYNAME_R@
+/* Store at most BUFLEN characters of the pathname of the terminal FD is
+   open on in BUF.  Return 0 on success, otherwise an error number.  */
+# if @REPLACE_TTYNAME_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ttyname_r
+#   define ttyname_r rpl_ttyname_r
+#  endif
+_GL_FUNCDECL_RPL (ttyname_r, int,
+                  (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (ttyname_r, int,
+                  (int fd, char *buf, size_t buflen));
+# else
+#  if !@HAVE_DECL_TTYNAME_R@
+_GL_FUNCDECL_SYS (ttyname_r, int,
+                  (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (ttyname_r, int,
+                  (int fd, char *buf, size_t buflen));
+# endif
+_GL_CXXALIASWARN (ttyname_r);
+#elif defined GNULIB_POSIXCHECK
+# undef ttyname_r
+# if HAVE_RAW_DECL_TTYNAME_R
+_GL_WARN_ON_USE (ttyname_r, "ttyname_r is not portable - "
+                 "use gnulib module ttyname_r for portability");
+# endif
+#endif
+
+
+#if @GNULIB_UNLINK@
+# if @REPLACE_UNLINK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef unlink
+#   define unlink rpl_unlink
+#  endif
+_GL_FUNCDECL_RPL (unlink, int, (char const *file) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (unlink, int, (char const *file));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef unlink
+#   define unlink _unlink
+#  endif
+_GL_CXXALIAS_MDA (unlink, int, (char const *file));
+# else
+_GL_CXXALIAS_SYS (unlink, int, (char const *file));
+# endif
+_GL_CXXALIASWARN (unlink);
+#elif defined GNULIB_POSIXCHECK
+# undef unlink
+# if HAVE_RAW_DECL_UNLINK
+_GL_WARN_ON_USE (unlink, "unlink is not portable - "
+                 "use gnulib module unlink for portability");
+# endif
+#elif @GNULIB_MDA_UNLINK@
+/* On native Windows, map 'unlink' to '_unlink', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::unlink always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef unlink
+#   define unlink _unlink
+#  endif
+_GL_CXXALIAS_MDA (unlink, int, (char const *file));
+# else
+_GL_CXXALIAS_SYS (unlink, int, (char const *file));
+# endif
+_GL_CXXALIASWARN (unlink);
+#endif
+
+
+#if @GNULIB_UNLINKAT@
+# if @REPLACE_UNLINKAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef unlinkat
+#   define unlinkat rpl_unlinkat
+#  endif
+_GL_FUNCDECL_RPL (unlinkat, int, (int fd, char const *file, int flag)
+                                 _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (unlinkat, int, (int fd, char const *file, int flag));
+# else
+#  if !@HAVE_UNLINKAT@
+_GL_FUNCDECL_SYS (unlinkat, int, (int fd, char const *file, int flag)
+                                 _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (unlinkat, int, (int fd, char const *file, int flag));
+# endif
+_GL_CXXALIASWARN (unlinkat);
+#elif defined GNULIB_POSIXCHECK
+# undef unlinkat
+# if HAVE_RAW_DECL_UNLINKAT
+_GL_WARN_ON_USE (unlinkat, "unlinkat is not portable - "
+                 "use gnulib module unlinkat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_USLEEP@
+/* Pause the execution of the current thread for N microseconds.
+   Returns 0 on completion, or -1 on range error.
+   See the POSIX:2001 specification
+   <https://pubs.opengroup.org/onlinepubs/009695399/functions/usleep.html>.  */
+# if @REPLACE_USLEEP@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef usleep
+#   define usleep rpl_usleep
+#  endif
+_GL_FUNCDECL_RPL (usleep, int, (useconds_t n));
+_GL_CXXALIAS_RPL (usleep, int, (useconds_t n));
+# else
+#  if !@HAVE_USLEEP@
+_GL_FUNCDECL_SYS (usleep, int, (useconds_t n));
+#  endif
+/* Need to cast, because on Haiku, the first parameter is
+                                     unsigned int n.  */
+_GL_CXXALIAS_SYS_CAST (usleep, int, (useconds_t n));
+# endif
+_GL_CXXALIASWARN (usleep);
+#elif defined GNULIB_POSIXCHECK
+# undef usleep
+# if HAVE_RAW_DECL_USLEEP
+_GL_WARN_ON_USE (usleep, "usleep is unportable - "
+                 "use gnulib module usleep for portability");
+# endif
+#endif
+
+
+#if @GNULIB_WRITE@
+/* Write up to COUNT bytes starting at BUF to file descriptor FD.
+   See the POSIX:2008 specification
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/write.html>.  */
+# if @REPLACE_WRITE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef write
+#   define write rpl_write
+#  endif
+_GL_FUNCDECL_RPL (write, ssize_t, (int fd, const void *buf, size_t count)
+                                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (write, ssize_t, (int fd, const void *buf, size_t count));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef write
+#   define write _write
+#  endif
+_GL_CXXALIAS_MDA (write, ssize_t, (int fd, const void *buf, size_t count));
+# else
+_GL_CXXALIAS_SYS (write, ssize_t, (int fd, const void *buf, size_t count));
+# endif
+_GL_CXXALIASWARN (write);
+#elif @GNULIB_MDA_WRITE@
+/* On native Windows, map 'write' to '_write', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::write always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef write
+#   define write _write
+#  endif
+#  ifdef __MINGW32__
+_GL_CXXALIAS_MDA (write, int, (int fd, const void *buf, unsigned int count));
+#  else
+_GL_CXXALIAS_MDA (write, ssize_t, (int fd, const void *buf, unsigned int count));
+#  endif
+# else
+_GL_CXXALIAS_SYS (write, ssize_t, (int fd, const void *buf, size_t count));
+# endif
+_GL_CXXALIASWARN (write);
+#endif
+
+_GL_INLINE_HEADER_END
+
+#endif /* _@GUARD_PREFIX@_UNISTD_H */
+#endif /* _GL_INCLUDING_UNISTD_H */
+#endif /* _@GUARD_PREFIX@_UNISTD_H */
diff --git a/src/grep/lib/unistr.in.h b/src/grep/lib/unistr.in.h
new file mode 100644
index 0000000..3b38207
--- /dev/null
+++ b/src/grep/lib/unistr.in.h
@@ -0,0 +1,753 @@
+/* Elementary Unicode string functions.
+   Copyright (C) 2001-2002, 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _UNISTR_H
+#define _UNISTR_H
+
+#include "unitypes.h"
+
+/* Get bool.  */
+#include <stdbool.h>
+
+/* Get size_t, ptrdiff_t.  */
+#include <stddef.h>
+
+/* Get free().  */
+#include <stdlib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Conventions:
+
+   All functions prefixed with u8_ operate on UTF-8 encoded strings.
+   Their unit is an uint8_t (1 byte).
+
+   All functions prefixed with u16_ operate on UTF-16 encoded strings.
+   Their unit is an uint16_t (a 2-byte word).
+
+   All functions prefixed with u32_ operate on UCS-4 encoded strings.
+   Their unit is an uint32_t (a 4-byte word).
+
+   All argument pairs (s, n) denote a Unicode string s[0..n-1] with exactly
+   n units.
+
+   All arguments starting with "str" and the arguments of functions starting
+   with u8_str/u16_str/u32_str denote a NUL terminated string, i.e. a string
+   which terminates at the first NUL unit.  This termination unit is
+   considered part of the string for all memory allocation purposes, but
+   is not considered part of the string for all other logical purposes.
+
+   Functions returning a string result take a (resultbuf, lengthp) argument
+   pair.  If resultbuf is not NULL and the result fits into *lengthp units,
+   it is put in resultbuf, and resultbuf is returned.  Otherwise, a freshly
+   allocated string is returned.  In both cases, *lengthp is set to the
+   length (number of units) of the returned string.  In case of error,
+   NULL is returned and errno is set.  */
+
+
+/* Elementary string checks.  */
+
+/* Check whether an UTF-8 string is well-formed.
+   Return NULL if valid, or a pointer to the first invalid unit otherwise.  */
+extern const uint8_t *
+       u8_check (const uint8_t *s, size_t n)
+       _UC_ATTRIBUTE_PURE;
+
+/* Check whether an UTF-16 string is well-formed.
+   Return NULL if valid, or a pointer to the first invalid unit otherwise.  */
+extern const uint16_t *
+       u16_check (const uint16_t *s, size_t n)
+       _UC_ATTRIBUTE_PURE;
+
+/* Check whether an UCS-4 string is well-formed.
+   Return NULL if valid, or a pointer to the first invalid unit otherwise.  */
+extern const uint32_t *
+       u32_check (const uint32_t *s, size_t n)
+       _UC_ATTRIBUTE_PURE;
+
+
+/* Elementary string conversions.  */
+
+/* Convert an UTF-8 string to an UTF-16 string.  */
+extern uint16_t *
+       u8_to_u16 (const uint8_t *s, size_t n, uint16_t *resultbuf,
+                  size_t *lengthp);
+
+/* Convert an UTF-8 string to an UCS-4 string.  */
+extern uint32_t *
+       u8_to_u32 (const uint8_t *s, size_t n, uint32_t *resultbuf,
+                  size_t *lengthp);
+
+/* Convert an UTF-16 string to an UTF-8 string.  */
+extern uint8_t *
+       u16_to_u8 (const uint16_t *s, size_t n, uint8_t *resultbuf,
+                  size_t *lengthp);
+
+/* Convert an UTF-16 string to an UCS-4 string.  */
+extern uint32_t *
+       u16_to_u32 (const uint16_t *s, size_t n, uint32_t *resultbuf,
+                   size_t *lengthp);
+
+/* Convert an UCS-4 string to an UTF-8 string.  */
+extern uint8_t *
+       u32_to_u8 (const uint32_t *s, size_t n, uint8_t *resultbuf,
+                  size_t *lengthp);
+
+/* Convert an UCS-4 string to an UTF-16 string.  */
+extern uint16_t *
+       u32_to_u16 (const uint32_t *s, size_t n, uint16_t *resultbuf,
+                   size_t *lengthp);
+
+
+/* Elementary string functions.  */
+
+/* Return the length (number of units) of the first character in S, which is
+   no longer than N.  Return 0 if it is the NUL character.  Return -1 upon
+   failure.  */
+/* Similar to mblen(), except that s must not be NULL.  */
+extern int
+       u8_mblen (const uint8_t *s, size_t n)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u16_mblen (const uint16_t *s, size_t n)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u32_mblen (const uint32_t *s, size_t n)
+       _UC_ATTRIBUTE_PURE;
+
+/* Return the length (number of units) of the first character in S, putting
+   its 'ucs4_t' representation in *PUC.  Upon failure, *PUC is set to 0xfffd,
+   and an appropriate number of units is returned.
+   The number of available units, N, must be > 0.  */
+/* Similar to mbtowc(), except that puc and s must not be NULL, n must be > 0,
+   and the NUL character is not treated specially.  */
+/* The variants with _unsafe suffix are for backward compatibility with
+   libunistring versions < 0.9.7.  */
+
+#if GNULIB_UNISTR_U8_MBTOUC_UNSAFE || HAVE_LIBUNISTRING
+# if !HAVE_INLINE
+extern int
+       u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n);
+# else
+extern int
+       u8_mbtouc_unsafe_aux (ucs4_t *puc, const uint8_t *s, size_t n);
+static inline int
+u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
+{
+  uint8_t c = *s;
+
+  if (c < 0x80)
+    {
+      *puc = c;
+      return 1;
+    }
+  else
+    return u8_mbtouc_unsafe_aux (puc, s, n);
+}
+# endif
+#endif
+
+#if GNULIB_UNISTR_U16_MBTOUC_UNSAFE || HAVE_LIBUNISTRING
+# if !HAVE_INLINE
+extern int
+       u16_mbtouc_unsafe (ucs4_t *puc, const uint16_t *s, size_t n);
+# else
+extern int
+       u16_mbtouc_unsafe_aux (ucs4_t *puc, const uint16_t *s, size_t n);
+static inline int
+u16_mbtouc_unsafe (ucs4_t *puc, const uint16_t *s, size_t n)
+{
+  uint16_t c = *s;
+
+  if (c < 0xd800 || c >= 0xe000)
+    {
+      *puc = c;
+      return 1;
+    }
+  else
+    return u16_mbtouc_unsafe_aux (puc, s, n);
+}
+# endif
+#endif
+
+#if GNULIB_UNISTR_U32_MBTOUC_UNSAFE || HAVE_LIBUNISTRING
+# if !HAVE_INLINE
+extern int
+       u32_mbtouc_unsafe (ucs4_t *puc, const uint32_t *s, size_t n);
+# else
+static inline int
+u32_mbtouc_unsafe (ucs4_t *puc,
+                   const uint32_t *s, _GL_ATTRIBUTE_MAYBE_UNUSED size_t n)
+{
+  uint32_t c = *s;
+
+  if (c < 0xd800 || (c >= 0xe000 && c < 0x110000))
+    *puc = c;
+  else
+    /* invalid multibyte character */
+    *puc = 0xfffd;
+  return 1;
+}
+# endif
+#endif
+
+#if GNULIB_UNISTR_U8_MBTOUC || HAVE_LIBUNISTRING
+# if !HAVE_INLINE
+extern int
+       u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n);
+# else
+extern int
+       u8_mbtouc_aux (ucs4_t *puc, const uint8_t *s, size_t n);
+static inline int
+u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
+{
+  uint8_t c = *s;
+
+  if (c < 0x80)
+    {
+      *puc = c;
+      return 1;
+    }
+  else
+    return u8_mbtouc_aux (puc, s, n);
+}
+# endif
+#endif
+
+#if GNULIB_UNISTR_U16_MBTOUC || HAVE_LIBUNISTRING
+# if !HAVE_INLINE
+extern int
+       u16_mbtouc (ucs4_t *puc, const uint16_t *s, size_t n);
+# else
+extern int
+       u16_mbtouc_aux (ucs4_t *puc, const uint16_t *s, size_t n);
+static inline int
+u16_mbtouc (ucs4_t *puc, const uint16_t *s, size_t n)
+{
+  uint16_t c = *s;
+
+  if (c < 0xd800 || c >= 0xe000)
+    {
+      *puc = c;
+      return 1;
+    }
+  else
+    return u16_mbtouc_aux (puc, s, n);
+}
+# endif
+#endif
+
+#if GNULIB_UNISTR_U32_MBTOUC || HAVE_LIBUNISTRING
+# if !HAVE_INLINE
+extern int
+       u32_mbtouc (ucs4_t *puc, const uint32_t *s, size_t n);
+# else
+static inline int
+u32_mbtouc (ucs4_t *puc, const uint32_t *s,
+            _GL_ATTRIBUTE_MAYBE_UNUSED size_t n)
+{
+  uint32_t c = *s;
+
+  if (c < 0xd800 || (c >= 0xe000 && c < 0x110000))
+    *puc = c;
+  else
+    /* invalid multibyte character */
+    *puc = 0xfffd;
+  return 1;
+}
+# endif
+#endif
+
+/* Return the length (number of units) of the first character in S, putting
+   its 'ucs4_t' representation in *PUC.  Upon failure, *PUC is set to 0xfffd,
+   and -1 is returned for an invalid sequence of units, -2 is returned for an
+   incomplete sequence of units.
+   The number of available units, N, must be > 0.  */
+/* Similar to u*_mbtouc(), except that the return value gives more details
+   about the failure, similar to mbrtowc().  */
+
+#if GNULIB_UNISTR_U8_MBTOUCR || HAVE_LIBUNISTRING
+extern int
+       u8_mbtoucr (ucs4_t *puc, const uint8_t *s, size_t n);
+#endif
+
+#if GNULIB_UNISTR_U16_MBTOUCR || HAVE_LIBUNISTRING
+extern int
+       u16_mbtoucr (ucs4_t *puc, const uint16_t *s, size_t n);
+#endif
+
+#if GNULIB_UNISTR_U32_MBTOUCR || HAVE_LIBUNISTRING
+extern int
+       u32_mbtoucr (ucs4_t *puc, const uint32_t *s, size_t n);
+#endif
+
+/* Put the multibyte character represented by UC in S, returning its
+   length.  Return -1 upon failure, -2 if the number of available units, N,
+   is too small.  The latter case cannot occur if N >= 6/2/1, respectively.  */
+/* Similar to wctomb(), except that s must not be NULL, and the argument n
+   must be specified.  */
+
+#if GNULIB_UNISTR_U8_UCTOMB || HAVE_LIBUNISTRING
+/* Auxiliary function, also used by u8_chr, u8_strchr, u8_strrchr.  */
+extern int
+       u8_uctomb_aux (uint8_t *s, ucs4_t uc, ptrdiff_t n);
+# if !HAVE_INLINE
+extern int
+       u8_uctomb (uint8_t *s, ucs4_t uc, ptrdiff_t n);
+# else
+static inline int
+u8_uctomb (uint8_t *s, ucs4_t uc, ptrdiff_t n)
+{
+  if (uc < 0x80 && n > 0)
+    {
+      s[0] = uc;
+      return 1;
+    }
+  else
+    return u8_uctomb_aux (s, uc, n);
+}
+# endif
+#endif
+
+#if GNULIB_UNISTR_U16_UCTOMB || HAVE_LIBUNISTRING
+/* Auxiliary function, also used by u16_chr, u16_strchr, u16_strrchr.  */
+extern int
+       u16_uctomb_aux (uint16_t *s, ucs4_t uc, ptrdiff_t n);
+# if !HAVE_INLINE
+extern int
+       u16_uctomb (uint16_t *s, ucs4_t uc, ptrdiff_t n);
+# else
+static inline int
+u16_uctomb (uint16_t *s, ucs4_t uc, ptrdiff_t n)
+{
+  if (uc < 0xd800 && n > 0)
+    {
+      s[0] = uc;
+      return 1;
+    }
+  else
+    return u16_uctomb_aux (s, uc, n);
+}
+# endif
+#endif
+
+#if GNULIB_UNISTR_U32_UCTOMB || HAVE_LIBUNISTRING
+# if !HAVE_INLINE
+extern int
+       u32_uctomb (uint32_t *s, ucs4_t uc, ptrdiff_t n);
+# else
+static inline int
+u32_uctomb (uint32_t *s, ucs4_t uc, ptrdiff_t n)
+{
+  if (uc < 0xd800 || (uc >= 0xe000 && uc < 0x110000))
+    {
+      if (n > 0)
+        {
+          *s = uc;
+          return 1;
+        }
+      else
+        return -2;
+    }
+  else
+    return -1;
+}
+# endif
+#endif
+
+/* Copy N units from SRC to DEST.  */
+/* Similar to memcpy().  */
+extern uint8_t *
+       u8_cpy (uint8_t *_UC_RESTRICT dest, const uint8_t *src, size_t n);
+extern uint16_t *
+       u16_cpy (uint16_t *_UC_RESTRICT dest, const uint16_t *src, size_t n);
+extern uint32_t *
+       u32_cpy (uint32_t *_UC_RESTRICT dest, const uint32_t *src, size_t n);
+
+/* Copy N units from SRC to DEST, guaranteeing correct behavior for
+   overlapping memory areas.  */
+/* Similar to memmove().  */
+extern uint8_t *
+       u8_move (uint8_t *dest, const uint8_t *src, size_t n);
+extern uint16_t *
+       u16_move (uint16_t *dest, const uint16_t *src, size_t n);
+extern uint32_t *
+       u32_move (uint32_t *dest, const uint32_t *src, size_t n);
+
+/* Set the first N characters of S to UC.  UC should be a character that
+   occupies only 1 unit.  */
+/* Similar to memset().  */
+extern uint8_t *
+       u8_set (uint8_t *s, ucs4_t uc, size_t n);
+extern uint16_t *
+       u16_set (uint16_t *s, ucs4_t uc, size_t n);
+extern uint32_t *
+       u32_set (uint32_t *s, ucs4_t uc, size_t n);
+
+/* Compare S1 and S2, each of length N.  */
+/* Similar to memcmp().  */
+extern int
+       u8_cmp (const uint8_t *s1, const uint8_t *s2, size_t n)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u16_cmp (const uint16_t *s1, const uint16_t *s2, size_t n)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u32_cmp (const uint32_t *s1, const uint32_t *s2, size_t n)
+       _UC_ATTRIBUTE_PURE;
+
+/* Compare S1 and S2.  */
+/* Similar to the gnulib function memcmp2().  */
+extern int
+       u8_cmp2 (const uint8_t *s1, size_t n1, const uint8_t *s2, size_t n2)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u16_cmp2 (const uint16_t *s1, size_t n1, const uint16_t *s2, size_t n2)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u32_cmp2 (const uint32_t *s1, size_t n1, const uint32_t *s2, size_t n2)
+       _UC_ATTRIBUTE_PURE;
+
+/* Search the string at S for UC.  */
+/* Similar to memchr().  */
+extern uint8_t *
+       u8_chr (const uint8_t *s, size_t n, ucs4_t uc)
+       _UC_ATTRIBUTE_PURE;
+extern uint16_t *
+       u16_chr (const uint16_t *s, size_t n, ucs4_t uc)
+       _UC_ATTRIBUTE_PURE;
+extern uint32_t *
+       u32_chr (const uint32_t *s, size_t n, ucs4_t uc)
+       _UC_ATTRIBUTE_PURE;
+
+/* Count the number of Unicode characters in the N units from S.  */
+/* Similar to mbsnlen().  */
+extern size_t
+       u8_mbsnlen (const uint8_t *s, size_t n)
+       _UC_ATTRIBUTE_PURE;
+extern size_t
+       u16_mbsnlen (const uint16_t *s, size_t n)
+       _UC_ATTRIBUTE_PURE;
+extern size_t
+       u32_mbsnlen (const uint32_t *s, size_t n)
+       _UC_ATTRIBUTE_PURE;
+
+/* Elementary string functions with memory allocation.  */
+
+/* Make a freshly allocated copy of S, of length N.  */
+extern uint8_t *
+       u8_cpy_alloc (const uint8_t *s, size_t n);
+extern uint16_t *
+       u16_cpy_alloc (const uint16_t *s, size_t n);
+extern uint32_t *
+       u32_cpy_alloc (const uint32_t *s, size_t n);
+
+/* Elementary string functions on NUL terminated strings.  */
+
+/* Return the length (number of units) of the first character in S.
+   Return 0 if it is the NUL character.  Return -1 upon failure.  */
+extern int
+       u8_strmblen (const uint8_t *s)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u16_strmblen (const uint16_t *s)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u32_strmblen (const uint32_t *s)
+       _UC_ATTRIBUTE_PURE;
+
+/* Return the length (number of units) of the first character in S, putting
+   its 'ucs4_t' representation in *PUC.  Return 0 if it is the NUL
+   character.  Return -1 upon failure.  */
+extern int
+       u8_strmbtouc (ucs4_t *puc, const uint8_t *s);
+extern int
+       u16_strmbtouc (ucs4_t *puc, const uint16_t *s);
+extern int
+       u32_strmbtouc (ucs4_t *puc, const uint32_t *s);
+
+/* Forward iteration step.  Advances the pointer past the next character,
+   or returns NULL if the end of the string has been reached.  Puts the
+   character's 'ucs4_t' representation in *PUC.  */
+extern const uint8_t *
+       u8_next (ucs4_t *puc, const uint8_t *s);
+extern const uint16_t *
+       u16_next (ucs4_t *puc, const uint16_t *s);
+extern const uint32_t *
+       u32_next (ucs4_t *puc, const uint32_t *s);
+
+/* Backward iteration step.  Advances the pointer to point to the previous
+   character, or returns NULL if the beginning of the string had been reached.
+   Puts the character's 'ucs4_t' representation in *PUC.  */
+extern const uint8_t *
+       u8_prev (ucs4_t *puc, const uint8_t *s, const uint8_t *start);
+extern const uint16_t *
+       u16_prev (ucs4_t *puc, const uint16_t *s, const uint16_t *start);
+extern const uint32_t *
+       u32_prev (ucs4_t *puc, const uint32_t *s, const uint32_t *start);
+
+/* Return the number of units in S.  */
+/* Similar to strlen(), wcslen().  */
+extern size_t
+       u8_strlen (const uint8_t *s)
+       _UC_ATTRIBUTE_PURE;
+extern size_t
+       u16_strlen (const uint16_t *s)
+       _UC_ATTRIBUTE_PURE;
+extern size_t
+       u32_strlen (const uint32_t *s)
+       _UC_ATTRIBUTE_PURE;
+
+/* Return the number of units in S, but at most MAXLEN.  */
+/* Similar to strnlen(), wcsnlen().  */
+extern size_t
+       u8_strnlen (const uint8_t *s, size_t maxlen)
+       _UC_ATTRIBUTE_PURE;
+extern size_t
+       u16_strnlen (const uint16_t *s, size_t maxlen)
+       _UC_ATTRIBUTE_PURE;
+extern size_t
+       u32_strnlen (const uint32_t *s, size_t maxlen)
+       _UC_ATTRIBUTE_PURE;
+
+/* Copy SRC to DEST.  */
+/* Similar to strcpy(), wcscpy().  */
+extern uint8_t *
+       u8_strcpy (uint8_t *_UC_RESTRICT dest, const uint8_t *src);
+extern uint16_t *
+       u16_strcpy (uint16_t *_UC_RESTRICT dest, const uint16_t *src);
+extern uint32_t *
+       u32_strcpy (uint32_t *_UC_RESTRICT dest, const uint32_t *src);
+
+/* Copy SRC to DEST, returning the address of the terminating NUL in DEST.  */
+/* Similar to stpcpy().  */
+extern uint8_t *
+       u8_stpcpy (uint8_t *_UC_RESTRICT dest, const uint8_t *src);
+extern uint16_t *
+       u16_stpcpy (uint16_t *_UC_RESTRICT dest, const uint16_t *src);
+extern uint32_t *
+       u32_stpcpy (uint32_t *_UC_RESTRICT dest, const uint32_t *src);
+
+/* Copy no more than N units of SRC to DEST.  */
+/* Similar to strncpy(), wcsncpy().  */
+extern uint8_t *
+       u8_strncpy (uint8_t *_UC_RESTRICT dest, const uint8_t *src, size_t n);
+extern uint16_t *
+       u16_strncpy (uint16_t *_UC_RESTRICT dest, const uint16_t *src, size_t n);
+extern uint32_t *
+       u32_strncpy (uint32_t *_UC_RESTRICT dest, const uint32_t *src, size_t n);
+
+/* Copy no more than N units of SRC to DEST.  Return a pointer past the last
+   non-NUL unit written into DEST.  */
+/* Similar to stpncpy().  */
+extern uint8_t *
+       u8_stpncpy (uint8_t *_UC_RESTRICT dest, const uint8_t *src, size_t n);
+extern uint16_t *
+       u16_stpncpy (uint16_t *_UC_RESTRICT dest, const uint16_t *src, size_t n);
+extern uint32_t *
+       u32_stpncpy (uint32_t *_UC_RESTRICT dest, const uint32_t *src, size_t n);
+
+/* Append SRC onto DEST.  */
+/* Similar to strcat(), wcscat().  */
+extern uint8_t *
+       u8_strcat (uint8_t *_UC_RESTRICT dest, const uint8_t *src);
+extern uint16_t *
+       u16_strcat (uint16_t *_UC_RESTRICT dest, const uint16_t *src);
+extern uint32_t *
+       u32_strcat (uint32_t *_UC_RESTRICT dest, const uint32_t *src);
+
+/* Append no more than N units of SRC onto DEST.  */
+/* Similar to strncat(), wcsncat().  */
+extern uint8_t *
+       u8_strncat (uint8_t *_UC_RESTRICT dest, const uint8_t *src, size_t n);
+extern uint16_t *
+       u16_strncat (uint16_t *_UC_RESTRICT dest, const uint16_t *src, size_t n);
+extern uint32_t *
+       u32_strncat (uint32_t *_UC_RESTRICT dest, const uint32_t *src, size_t n);
+
+/* Compare S1 and S2.  */
+/* Similar to strcmp(), wcscmp().  */
+#ifdef __sun
+/* Avoid a collision with the u8_strcmp() function in Solaris 11 libc.  */
+extern int
+       u8_strcmp_gnu (const uint8_t *s1, const uint8_t *s2)
+       _UC_ATTRIBUTE_PURE;
+# define u8_strcmp u8_strcmp_gnu
+#else
+extern int
+       u8_strcmp (const uint8_t *s1, const uint8_t *s2)
+       _UC_ATTRIBUTE_PURE;
+#endif
+extern int
+       u16_strcmp (const uint16_t *s1, const uint16_t *s2)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u32_strcmp (const uint32_t *s1, const uint32_t *s2)
+       _UC_ATTRIBUTE_PURE;
+
+/* Compare S1 and S2 using the collation rules of the current locale.
+   Return -1 if S1 < S2, 0 if S1 = S2, 1 if S1 > S2.
+   Upon failure, set errno and return any value.  */
+/* Similar to strcoll(), wcscoll().  */
+extern int
+       u8_strcoll (const uint8_t *s1, const uint8_t *s2);
+extern int
+       u16_strcoll (const uint16_t *s1, const uint16_t *s2);
+extern int
+       u32_strcoll (const uint32_t *s1, const uint32_t *s2);
+
+/* Compare no more than N units of S1 and S2.  */
+/* Similar to strncmp(), wcsncmp().  */
+extern int
+       u8_strncmp (const uint8_t *s1, const uint8_t *s2, size_t n)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u16_strncmp (const uint16_t *s1, const uint16_t *s2, size_t n)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u32_strncmp (const uint32_t *s1, const uint32_t *s2, size_t n)
+       _UC_ATTRIBUTE_PURE;
+
+/* Duplicate S, returning an identical malloc'd string.  */
+/* Similar to strdup(), wcsdup().  */
+extern uint8_t *
+       u8_strdup (const uint8_t *s)
+       _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
+extern uint16_t *
+       u16_strdup (const uint16_t *s)
+       _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
+extern uint32_t *
+       u32_strdup (const uint32_t *s)
+       _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
+
+/* Find the first occurrence of UC in STR.  */
+/* Similar to strchr(), wcschr().  */
+extern uint8_t *
+       u8_strchr (const uint8_t *str, ucs4_t uc)
+       _UC_ATTRIBUTE_PURE;
+extern uint16_t *
+       u16_strchr (const uint16_t *str, ucs4_t uc)
+       _UC_ATTRIBUTE_PURE;
+extern uint32_t *
+       u32_strchr (const uint32_t *str, ucs4_t uc)
+       _UC_ATTRIBUTE_PURE;
+
+/* Find the last occurrence of UC in STR.  */
+/* Similar to strrchr(), wcsrchr().  */
+extern uint8_t *
+       u8_strrchr (const uint8_t *str, ucs4_t uc)
+       _UC_ATTRIBUTE_PURE;
+extern uint16_t *
+       u16_strrchr (const uint16_t *str, ucs4_t uc)
+       _UC_ATTRIBUTE_PURE;
+extern uint32_t *
+       u32_strrchr (const uint32_t *str, ucs4_t uc)
+       _UC_ATTRIBUTE_PURE;
+
+/* Return the length of the initial segment of STR which consists entirely
+   of Unicode characters not in REJECT.  */
+/* Similar to strcspn(), wcscspn().  */
+extern size_t
+       u8_strcspn (const uint8_t *str, const uint8_t *reject)
+       _UC_ATTRIBUTE_PURE;
+extern size_t
+       u16_strcspn (const uint16_t *str, const uint16_t *reject)
+       _UC_ATTRIBUTE_PURE;
+extern size_t
+       u32_strcspn (const uint32_t *str, const uint32_t *reject)
+       _UC_ATTRIBUTE_PURE;
+
+/* Return the length of the initial segment of STR which consists entirely
+   of Unicode characters in ACCEPT.  */
+/* Similar to strspn(), wcsspn().  */
+extern size_t
+       u8_strspn (const uint8_t *str, const uint8_t *accept)
+       _UC_ATTRIBUTE_PURE;
+extern size_t
+       u16_strspn (const uint16_t *str, const uint16_t *accept)
+       _UC_ATTRIBUTE_PURE;
+extern size_t
+       u32_strspn (const uint32_t *str, const uint32_t *accept)
+       _UC_ATTRIBUTE_PURE;
+
+/* Find the first occurrence in STR of any character in ACCEPT.  */
+/* Similar to strpbrk(), wcspbrk().  */
+extern uint8_t *
+       u8_strpbrk (const uint8_t *str, const uint8_t *accept)
+       _UC_ATTRIBUTE_PURE;
+extern uint16_t *
+       u16_strpbrk (const uint16_t *str, const uint16_t *accept)
+       _UC_ATTRIBUTE_PURE;
+extern uint32_t *
+       u32_strpbrk (const uint32_t *str, const uint32_t *accept)
+       _UC_ATTRIBUTE_PURE;
+
+/* Find the first occurrence of NEEDLE in HAYSTACK.  */
+/* Similar to strstr(), wcsstr().  */
+extern uint8_t *
+       u8_strstr (const uint8_t *haystack, const uint8_t *needle)
+       _UC_ATTRIBUTE_PURE;
+extern uint16_t *
+       u16_strstr (const uint16_t *haystack, const uint16_t *needle)
+       _UC_ATTRIBUTE_PURE;
+extern uint32_t *
+       u32_strstr (const uint32_t *haystack, const uint32_t *needle)
+       _UC_ATTRIBUTE_PURE;
+
+/* Test whether STR starts with PREFIX.  */
+extern bool
+       u8_startswith (const uint8_t *str, const uint8_t *prefix)
+       _UC_ATTRIBUTE_PURE;
+extern bool
+       u16_startswith (const uint16_t *str, const uint16_t *prefix)
+       _UC_ATTRIBUTE_PURE;
+extern bool
+       u32_startswith (const uint32_t *str, const uint32_t *prefix)
+       _UC_ATTRIBUTE_PURE;
+
+/* Test whether STR ends with SUFFIX.  */
+extern bool
+       u8_endswith (const uint8_t *str, const uint8_t *suffix)
+       _UC_ATTRIBUTE_PURE;
+extern bool
+       u16_endswith (const uint16_t *str, const uint16_t *suffix)
+       _UC_ATTRIBUTE_PURE;
+extern bool
+       u32_endswith (const uint32_t *str, const uint32_t *suffix)
+       _UC_ATTRIBUTE_PURE;
+
+/* Divide STR into tokens separated by characters in DELIM.
+   This interface is actually more similar to wcstok than to strtok.  */
+/* Similar to strtok_r(), wcstok().  */
+extern uint8_t *
+       u8_strtok (uint8_t *_UC_RESTRICT str, const uint8_t *delim,
+                  uint8_t **ptr);
+extern uint16_t *
+       u16_strtok (uint16_t *_UC_RESTRICT str, const uint16_t *delim,
+                   uint16_t **ptr);
+extern uint32_t *
+       u32_strtok (uint32_t *_UC_RESTRICT str, const uint32_t *delim,
+                   uint32_t **ptr);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _UNISTR_H */
diff --git a/src/grep/lib/unistr/u8-mbtoucr.c b/src/grep/lib/unistr/u8-mbtoucr.c
new file mode 100644
index 0000000..77a6cac
--- /dev/null
+++ b/src/grep/lib/unistr/u8-mbtoucr.c
@@ -0,0 +1,142 @@
+/* Look at first character in UTF-8 string, returning an error code.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2001.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "unistr.h"
+
+int
+u8_mbtoucr (ucs4_t *puc, const uint8_t *s, size_t n)
+{
+  uint8_t c = *s;
+
+  if (c < 0x80)
+    {
+      *puc = c;
+      return 1;
+    }
+  else if (c >= 0xc2)
+    {
+      if (c < 0xe0)
+        {
+          if (n >= 2)
+            {
+              if ((s[1] ^ 0x80) < 0x40)
+                {
+                  *puc = ((unsigned int) (c & 0x1f) << 6)
+                         | (unsigned int) (s[1] ^ 0x80);
+                  return 2;
+                }
+              /* invalid multibyte character */
+            }
+          else
+            {
+              /* incomplete multibyte character */
+              *puc = 0xfffd;
+              return -2;
+            }
+        }
+      else if (c < 0xf0)
+        {
+          if (n >= 2)
+            {
+              if ((s[1] ^ 0x80) < 0x40
+                  && (c >= 0xe1 || s[1] >= 0xa0)
+                  && (c != 0xed || s[1] < 0xa0))
+                {
+                  if (n >= 3)
+                    {
+                      if ((s[2] ^ 0x80) < 0x40)
+                        {
+                          *puc = ((unsigned int) (c & 0x0f) << 12)
+                                 | ((unsigned int) (s[1] ^ 0x80) << 6)
+                                 | (unsigned int) (s[2] ^ 0x80);
+                          return 3;
+                        }
+                      /* invalid multibyte character */
+                    }
+                  else
+                    {
+                      /* incomplete multibyte character */
+                      *puc = 0xfffd;
+                      return -2;
+                    }
+                }
+              /* invalid multibyte character */
+            }
+          else
+            {
+              /* incomplete multibyte character */
+              *puc = 0xfffd;
+              return -2;
+            }
+        }
+      else if (c < 0xf8)
+        {
+          if (n >= 2)
+            {
+              if ((s[1] ^ 0x80) < 0x40
+                  && (c >= 0xf1 || s[1] >= 0x90)
+                  && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)))
+                {
+                  if (n >= 3)
+                    {
+                      if ((s[2] ^ 0x80) < 0x40)
+                        {
+                          if (n >= 4)
+                            {
+                              if ((s[3] ^ 0x80) < 0x40)
+                                {
+                                  *puc = ((unsigned int) (c & 0x07) << 18)
+                                         | ((unsigned int) (s[1] ^ 0x80) << 12)
+                                         | ((unsigned int) (s[2] ^ 0x80) << 6)
+                                         | (unsigned int) (s[3] ^ 0x80);
+                                  return 4;
+                                }
+                              /* invalid multibyte character */
+                            }
+                          else
+                            {
+                              /* incomplete multibyte character */
+                              *puc = 0xfffd;
+                              return -2;
+                            }
+                        }
+                      /* invalid multibyte character */
+                    }
+                  else
+                    {
+                      /* incomplete multibyte character */
+                      *puc = 0xfffd;
+                      return -2;
+                    }
+                }
+              /* invalid multibyte character */
+            }
+          else
+            {
+              /* incomplete multibyte character */
+              *puc = 0xfffd;
+              return -2;
+            }
+        }
+    }
+  /* invalid multibyte character */
+  *puc = 0xfffd;
+  return -1;
+}
diff --git a/src/grep/lib/unistr/u8-uctomb-aux.c b/src/grep/lib/unistr/u8-uctomb-aux.c
new file mode 100644
index 0000000..2be1cfb
--- /dev/null
+++ b/src/grep/lib/unistr/u8-uctomb-aux.c
@@ -0,0 +1,60 @@
+/* Conversion UCS-4 to UTF-8.
+   Copyright (C) 2002, 2006-2007, 2009-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2002.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "unistr.h"
+
+#include "attribute.h"
+
+int
+u8_uctomb_aux (uint8_t *s, ucs4_t uc, ptrdiff_t n)
+{
+  int count;
+
+  if (uc < 0x80)
+    /* The case n >= 1 is already handled by the caller.  */
+    return -2;
+  else if (uc < 0x800)
+    count = 2;
+  else if (uc < 0x10000)
+    {
+      if (uc < 0xd800 || uc >= 0xe000)
+        count = 3;
+      else
+        return -1;
+    }
+  else if (uc < 0x110000)
+    count = 4;
+  else
+    return -1;
+
+  if (n < count)
+    return -2;
+
+  switch (count) /* note: code falls through cases! */
+    {
+    case 4: s[3] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x10000;
+      FALLTHROUGH;
+    case 3: s[2] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x800;
+      FALLTHROUGH;
+    case 2: s[1] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0xc0;
+  /*case 1:*/ s[0] = uc;
+    }
+  return count;
+}
diff --git a/src/grep/lib/unistr/u8-uctomb.c b/src/grep/lib/unistr/u8-uctomb.c
new file mode 100644
index 0000000..e2577c6
--- /dev/null
+++ b/src/grep/lib/unistr/u8-uctomb.c
@@ -0,0 +1,79 @@
+/* Store a character in UTF-8 string.
+   Copyright (C) 2002, 2005-2006, 2009-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2002.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#if defined IN_LIBUNISTRING
+/* Tell unistr.h to declare u8_uctomb as 'extern', not 'static inline'.  */
+# include "unistring-notinline.h"
+#endif
+
+/* Specification.  */
+#include "unistr.h"
+
+#include "attribute.h"
+
+#if !HAVE_INLINE
+
+int
+u8_uctomb (uint8_t *s, ucs4_t uc, ptrdiff_t n)
+{
+  if (uc < 0x80)
+    {
+      if (n > 0)
+        {
+          s[0] = uc;
+          return 1;
+        }
+      /* else return -2, below.  */
+    }
+  else
+    {
+      int count;
+
+      if (uc < 0x800)
+        count = 2;
+      else if (uc < 0x10000)
+        {
+          if (uc < 0xd800 || uc >= 0xe000)
+            count = 3;
+          else
+            return -1;
+        }
+      else if (uc < 0x110000)
+        count = 4;
+      else
+        return -1;
+
+      if (n >= count)
+        {
+          switch (count) /* note: code falls through cases! */
+            {
+            case 4: s[3] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x10000;
+              FALLTHROUGH;
+            case 3: s[2] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x800;
+              FALLTHROUGH;
+            case 2: s[1] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0xc0;
+          /*case 1:*/ s[0] = uc;
+            }
+          return count;
+        }
+    }
+  return -2;
+}
+
+#endif
diff --git a/src/grep/lib/unitypes.in.h b/src/grep/lib/unitypes.in.h
new file mode 100644
index 0000000..82ee0de
--- /dev/null
+++ b/src/grep/lib/unitypes.in.h
@@ -0,0 +1,61 @@
+/* Elementary types and macros for the GNU UniString library.
+   Copyright (C) 2002, 2005-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _UNITYPES_H
+#define _UNITYPES_H
+
+/* Get uint8_t, uint16_t, uint32_t.  */
+#include <stdint.h>
+
+/* Type representing a Unicode character.  */
+typedef uint32_t ucs4_t;
+
+/* Attribute of a function whose result depends only on the arguments
+   (not pointers!) and which has no side effects.  */
+#ifndef _UC_ATTRIBUTE_CONST
+# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) || defined __clang__
+#  define _UC_ATTRIBUTE_CONST __attribute__ ((__const__))
+# else
+#  define _UC_ATTRIBUTE_CONST
+# endif
+#endif
+
+/* Attribute of a function whose result depends only on the arguments
+   (possibly pointers) and global memory, and which has no side effects.  */
+#ifndef _UC_ATTRIBUTE_PURE
+# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || defined __clang__
+#  define _UC_ATTRIBUTE_PURE __attribute__ ((__pure__))
+# else
+#  define _UC_ATTRIBUTE_PURE
+# endif
+#endif
+
+/* Qualifier in a function declaration, that asserts that the caller must
+   pass a pointer to a different object in the specified pointer argument
+   than in the other pointer arguments.  */
+#ifndef _UC_RESTRICT
+# if defined __restrict \
+     || 2 < __GNUC__ + (95 <= __GNUC_MINOR__) \
+     || __clang_major__ >= 3
+#  define _UC_RESTRICT __restrict
+# elif 199901L <= __STDC_VERSION__ || defined restrict
+#  define _UC_RESTRICT restrict
+# else
+#  define _UC_RESTRICT
+# endif
+#endif
+
+#endif /* _UNITYPES_H */
diff --git a/src/grep/lib/uniwidth.in.h b/src/grep/lib/uniwidth.in.h
new file mode 100644
index 0000000..0859254
--- /dev/null
+++ b/src/grep/lib/uniwidth.in.h
@@ -0,0 +1,72 @@
+/* Display width functions.
+   Copyright (C) 2001-2002, 2005, 2007, 2009-2021 Free Software Foundation,
+   Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _UNIWIDTH_H
+#define _UNIWIDTH_H
+
+#include "unitypes.h"
+
+/* Get size_t.  */
+#include <stddef.h>
+
+/* Get locale_charset() declaration.  */
+#include "localcharset.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Display width.  */
+
+/* These functions are locale dependent.  The encoding argument identifies
+   the encoding (e.g. "ISO-8859-2" for Polish).  */
+
+/* Determine number of column positions required for UC.  */
+extern int
+       uc_width (ucs4_t uc, const char *encoding)
+       _UC_ATTRIBUTE_PURE;
+
+/* Determine number of column positions required for first N units
+   (or fewer if S ends before this) in S.  */
+extern int
+       u8_width (const uint8_t *s, size_t n, const char *encoding)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u16_width (const uint16_t *s, size_t n, const char *encoding)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u32_width (const uint32_t *s, size_t n, const char *encoding)
+       _UC_ATTRIBUTE_PURE;
+
+/* Determine number of column positions required for S.  */
+extern int
+       u8_strwidth (const uint8_t *s, const char *encoding)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u16_strwidth (const uint16_t *s, const char *encoding)
+       _UC_ATTRIBUTE_PURE;
+extern int
+       u32_strwidth (const uint32_t *s, const char *encoding)
+       _UC_ATTRIBUTE_PURE;
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _UNIWIDTH_H */
diff --git a/src/grep/lib/uniwidth/cjk.h b/src/grep/lib/uniwidth/cjk.h
new file mode 100644
index 0000000..1853ceb
--- /dev/null
+++ b/src/grep/lib/uniwidth/cjk.h
@@ -0,0 +1,37 @@
+/* Test for CJK encoding.
+   Copyright (C) 2001-2002, 2005-2007, 2009-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2002.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "streq.h"
+
+static int
+is_cjk_encoding (const char *encoding)
+{
+  if (0
+      /* Legacy Japanese encodings */
+      || STREQ_OPT (encoding, "EUC-JP", 'E', 'U', 'C', '-', 'J', 'P', 0, 0, 0)
+      /* Legacy Chinese encodings */
+      || STREQ_OPT (encoding, "GB2312", 'G', 'B', '2', '3', '1', '2', 0, 0, 0)
+      || STREQ_OPT (encoding, "GBK", 'G', 'B', 'K', 0, 0, 0, 0, 0, 0)
+      || STREQ_OPT (encoding, "EUC-TW", 'E', 'U', 'C', '-', 'T', 'W', 0, 0, 0)
+      || STREQ_OPT (encoding, "BIG5", 'B', 'I', 'G', '5', 0, 0, 0, 0, 0)
+      /* Legacy Korean encodings */
+      || STREQ_OPT (encoding, "EUC-KR", 'E', 'U', 'C', '-', 'K', 'R', 0, 0, 0)
+      || STREQ_OPT (encoding, "CP949", 'C', 'P', '9', '4', '9', 0, 0, 0, 0)
+      || STREQ_OPT (encoding, "JOHAB", 'J', 'O', 'H', 'A', 'B', 0, 0, 0, 0))
+    return 1;
+  return 0;
+}
diff --git a/src/grep/lib/uniwidth/width.c b/src/grep/lib/uniwidth/width.c
new file mode 100644
index 0000000..9ba07d3
--- /dev/null
+++ b/src/grep/lib/uniwidth/width.c
@@ -0,0 +1,468 @@
+/* Determine display width of Unicode character.
+   Copyright (C) 2001-2002, 2006-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2002.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "uniwidth.h"
+
+#include "cjk.h"
+
+/*
+ * Non-spacing attribute table.
+ * Consists of:
+ * - Non-spacing characters; generated from PropList.txt or
+ *   "grep '^[^;]*;[^;]*;[^;]*;[^;]*;NSM;' UnicodeData.txt"
+ * - Format control characters; generated from
+ *   "grep '^[^;]*;[^;]*;Cf;' UnicodeData.txt"
+ * - Zero width characters; generated from
+ *   "grep '^[^;]*;ZERO WIDTH ' UnicodeData.txt"
+ */
+static const unsigned char nonspacing_table_data[38*64] = {
+  /* 0x0000-0x01ff */
+  0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, /* 0x0000-0x003f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, /* 0x0040-0x007f */
+  0xff, 0xff, 0xff, 0xff, 0x00, 0x20, 0x00, 0x00, /* 0x0080-0x00bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x00c0-0x00ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0100-0x013f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0140-0x017f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0180-0x01bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x01c0-0x01ff */
+  /* 0x0200-0x03ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0200-0x023f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0240-0x027f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0280-0x02bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x02c0-0x02ff */
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x0300-0x033f */
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, /* 0x0340-0x037f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0380-0x03bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x03c0-0x03ff */
+  /* 0x0400-0x05ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0400-0x043f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0440-0x047f */
+  0xf8, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0480-0x04bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x04c0-0x04ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0500-0x053f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0540-0x057f */
+  0x00, 0x00, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xbf, /* 0x0580-0x05bf */
+  0xb6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x05c0-0x05ff */
+  /* 0x0600-0x07ff */
+  0x3f, 0x00, 0xff, 0x17, 0x00, 0x00, 0x00, 0x00, /* 0x0600-0x063f */
+  0x00, 0xf8, 0xff, 0xff, 0x00, 0x00, 0x01, 0x00, /* 0x0640-0x067f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0680-0x06bf */
+  0x00, 0x00, 0xc0, 0xbf, 0x9f, 0x3d, 0x00, 0x00, /* 0x06c0-0x06ff */
+  0x00, 0x80, 0x02, 0x00, 0x00, 0x00, 0xff, 0xff, /* 0x0700-0x073f */
+  0xff, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0740-0x077f */
+  0x00, 0x00, 0x00, 0x00, 0xc0, 0xff, 0x01, 0x00, /* 0x0780-0x07bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x0f, 0x00, /* 0x07c0-0x07ff */
+  /* 0x0800-0x09ff */
+  0x00, 0x00, 0xc0, 0xfb, 0xef, 0x3e, 0x00, 0x00, /* 0x0800-0x083f */
+  0x00, 0x00, 0x00, 0x0e, 0x00, 0x00, 0x00, 0x00, /* 0x0840-0x087f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0880-0x08bf */
+  0x00, 0x00, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x08c0-0x08ff */
+  0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14, /* 0x0900-0x093f */
+  0xfe, 0x21, 0xfe, 0x00, 0x0c, 0x00, 0x00, 0x00, /* 0x0940-0x097f */
+  0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, /* 0x0980-0x09bf */
+  0x1e, 0x20, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, /* 0x09c0-0x09ff */
+  /* 0x0a00-0x0bff */
+  0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, /* 0x0a00-0x0a3f */
+  0x86, 0x39, 0x02, 0x00, 0x00, 0x00, 0x23, 0x00, /* 0x0a40-0x0a7f */
+  0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, /* 0x0a80-0x0abf */
+  0xbe, 0x21, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, /* 0x0ac0-0x0aff */
+  0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x90, /* 0x0b00-0x0b3f */
+  0x1e, 0x20, 0x40, 0x00, 0x0c, 0x00, 0x00, 0x00, /* 0x0b40-0x0b7f */
+  0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0b80-0x0bbf */
+  0x01, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0bc0-0x0bff */
+  /* 0x0c00-0x0dff */
+  0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, /* 0x0c00-0x0c3f */
+  0xc1, 0x3d, 0x60, 0x00, 0x0c, 0x00, 0x00, 0x00, /* 0x0c40-0x0c7f */
+  0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, /* 0x0c80-0x0cbf */
+  0x00, 0x30, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, /* 0x0cc0-0x0cff */
+  0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0d00-0x0d3f */
+  0x1e, 0x20, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, /* 0x0d40-0x0d7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0d80-0x0dbf */
+  0x00, 0x04, 0x5c, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0dc0-0x0dff */
+  /* 0x0e00-0x0fff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf2, 0x07, /* 0x0e00-0x0e3f */
+  0x80, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0e40-0x0e7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf2, 0x1b, /* 0x0e80-0x0ebf */
+  0x00, 0x3f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0ec0-0x0eff */
+  0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0xa0, 0x02, /* 0x0f00-0x0f3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x7f, /* 0x0f40-0x0f7f */
+  0xdf, 0xe0, 0xff, 0xfe, 0xff, 0xff, 0xff, 0x1f, /* 0x0f80-0x0fbf */
+  0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0fc0-0x0fff */
+  /* 0x1000-0x11ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0xfd, 0x66, /* 0x1000-0x103f */
+  0x00, 0x00, 0x00, 0xc3, 0x01, 0x00, 0x1e, 0x00, /* 0x1040-0x107f */
+  0x64, 0x20, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, /* 0x1080-0x10bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10c0-0x10ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1100-0x113f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1140-0x117f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1180-0x11bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11c0-0x11ff */
+  /* 0x1200-0x13ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1200-0x123f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1240-0x127f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1280-0x12bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x12c0-0x12ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1300-0x133f */
+  0x00, 0x00, 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, /* 0x1340-0x137f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1380-0x13bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x13c0-0x13ff */
+  /* 0x1600-0x17ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1600-0x163f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1640-0x167f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1680-0x16bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16c0-0x16ff */
+  0x00, 0x00, 0x1c, 0x00, 0x00, 0x00, 0x1c, 0x00, /* 0x1700-0x173f */
+  0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x0c, 0x00, /* 0x1740-0x177f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xb0, 0x3f, /* 0x1780-0x17bf */
+  0x40, 0xfe, 0x0f, 0x20, 0x00, 0x00, 0x00, 0x00, /* 0x17c0-0x17ff */
+  /* 0x1800-0x19ff */
+  0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1800-0x183f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1840-0x187f */
+  0x60, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* 0x1880-0x18bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18c0-0x18ff */
+  0x00, 0x00, 0x00, 0x00, 0x87, 0x01, 0x04, 0x0e, /* 0x1900-0x193f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1940-0x197f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1980-0x19bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x19c0-0x19ff */
+  /* 0x1a00-0x1bff */
+  0x00, 0x00, 0x80, 0x09, 0x00, 0x00, 0x00, 0x00, /* 0x1a00-0x1a3f */
+  0x00, 0x00, 0x40, 0x7f, 0xe5, 0x1f, 0xf8, 0x9f, /* 0x1a40-0x1a7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x7f, /* 0x1a80-0x1abf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1ac0-0x1aff */
+  0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0xd0, 0x17, /* 0x1b00-0x1b3f */
+  0x04, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x0f, 0x00, /* 0x1b40-0x1b7f */
+  0x03, 0x00, 0x00, 0x00, 0x3c, 0x3b, 0x00, 0x00, /* 0x1b80-0x1bbf */
+  0x00, 0x00, 0x00, 0x00, 0x40, 0xa3, 0x03, 0x00, /* 0x1bc0-0x1bff */
+  /* 0x1c00-0x1dff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0xcf, 0x00, /* 0x1c00-0x1c3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1c40-0x1c7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1c80-0x1cbf */
+  0x00, 0x00, 0xf7, 0xff, 0xfd, 0x21, 0x10, 0x03, /* 0x1cc0-0x1cff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d00-0x1d3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d40-0x1d7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d80-0x1dbf */
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xf8, /* 0x1dc0-0x1dff */
+  /* 0x2000-0x21ff */
+  0x00, 0xf8, 0x00, 0x00, 0x00, 0x7c, 0x00, 0x00, /* 0x2000-0x203f */
+  0x00, 0x00, 0x00, 0x00, 0xdf, 0xff, 0x00, 0x00, /* 0x2040-0x207f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2080-0x20bf */
+  0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, /* 0x20c0-0x20ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2100-0x213f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2140-0x217f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2180-0x21bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x21c0-0x21ff */
+  /* 0x2c00-0x2dff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2c00-0x2c3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2c40-0x2c7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2c80-0x2cbf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x03, 0x00, /* 0x2cc0-0x2cff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2d00-0x2d3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, /* 0x2d40-0x2d7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2d80-0x2dbf */
+  0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, /* 0x2dc0-0x2dff */
+  /* 0x3000-0x31ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x00, 0x00, /* 0x3000-0x303f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x3040-0x307f */
+  0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, /* 0x3080-0x30bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30c0-0x30ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x3100-0x313f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x3140-0x317f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x3180-0x31bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x31c0-0x31ff */
+  /* 0xa600-0xa7ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa600-0xa63f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xf7, 0x3f, /* 0xa640-0xa67f */
+  0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x00, /* 0xa680-0xa6bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, /* 0xa6c0-0xa6ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa700-0xa73f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa740-0xa77f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa780-0xa7bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa7c0-0xa7ff */
+  /* 0xa800-0xa9ff */
+  0x44, 0x08, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, /* 0xa800-0xa83f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa840-0xa87f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa880-0xa8bf */
+  0x30, 0x00, 0x00, 0x00, 0xff, 0xff, 0x03, 0x00, /* 0xa8c0-0xa8ff */
+  0x00, 0x00, 0x00, 0x00, 0xc0, 0x3f, 0x00, 0x00, /* 0xa900-0xa93f */
+  0x80, 0xff, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa940-0xa97f */
+  0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0x13, /* 0xa980-0xa9bf */
+  0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, /* 0xa9c0-0xa9ff */
+  /* 0xaa00-0xabff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x66, 0x00, /* 0xaa00-0xaa3f */
+  0x08, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, /* 0xaa40-0xaa7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x9d, 0xc1, /* 0xaa80-0xaabf */
+  0x02, 0x00, 0x00, 0x00, 0x00, 0x30, 0x40, 0x00, /* 0xaac0-0xaaff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xab00-0xab3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xab40-0xab7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xab80-0xabbf */
+  0x00, 0x00, 0x00, 0x00, 0x20, 0x21, 0x00, 0x00, /* 0xabc0-0xabff */
+  /* 0xfa00-0xfbff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfa00-0xfa3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfa40-0xfa7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfa80-0xfabf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfac0-0xfaff */
+  0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, /* 0xfb00-0xfb3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfb40-0xfb7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfb80-0xfbbf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfbc0-0xfbff */
+  /* 0xfe00-0xffff */
+  0xff, 0xff, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, /* 0xfe00-0xfe3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfe40-0xfe7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfe80-0xfebf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, /* 0xfec0-0xfeff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xff00-0xff3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xff40-0xff7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xff80-0xffbf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, /* 0xffc0-0xffff */
+  /* 0x10000-0x101ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10000-0x1003f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10040-0x1007f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10080-0x100bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x100c0-0x100ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10100-0x1013f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10140-0x1017f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10180-0x101bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, /* 0x101c0-0x101ff */
+  /* 0x10200-0x103ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10200-0x1023f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10240-0x1027f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10280-0x102bf */
+  0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, /* 0x102c0-0x102ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10300-0x1033f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x07, /* 0x10340-0x1037f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10380-0x103bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x103c0-0x103ff */
+  /* 0x10a00-0x10bff */
+  0x6e, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x87, /* 0x10a00-0x10a3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10a40-0x10a7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10a80-0x10abf */
+  0x00, 0x00, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, /* 0x10ac0-0x10aff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10b00-0x10b3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10b40-0x10b7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10b80-0x10bbf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10bc0-0x10bff */
+  /* 0x11000-0x111ff */
+  0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, /* 0x11000-0x1103f */
+  0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, /* 0x11040-0x1107f */
+  0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x26, /* 0x11080-0x110bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x110c0-0x110ff */
+  0x07, 0x00, 0x00, 0x00, 0x80, 0xef, 0x1f, 0x00, /* 0x11100-0x1113f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, /* 0x11140-0x1117f */
+  0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x7f, /* 0x11180-0x111bf */
+  0x00, 0x1c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x111c0-0x111ff */
+  /* 0x11200-0x113ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xd3, 0x40, /* 0x11200-0x1123f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11240-0x1127f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11280-0x112bf */
+  0x00, 0x00, 0x00, 0x80, 0xf8, 0x07, 0x00, 0x00, /* 0x112c0-0x112ff */
+  0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, /* 0x11300-0x1133f */
+  0x01, 0x00, 0x00, 0x00, 0xc0, 0x1f, 0x1f, 0x00, /* 0x11340-0x1137f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11380-0x113bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x113c0-0x113ff */
+  /* 0x11400-0x115ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, /* 0x11400-0x1143f */
+  0x5c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11440-0x1147f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x85, /* 0x11480-0x114bf */
+  0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x114c0-0x114ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11500-0x1153f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11540-0x1157f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0xb0, /* 0x11580-0x115bf */
+  0x01, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, /* 0x115c0-0x115ff */
+  /* 0x11600-0x117ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xa7, /* 0x11600-0x1163f */
+  0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11640-0x1167f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0xbf, 0x00, /* 0x11680-0x116bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x116c0-0x116ff */
+  0x00, 0x00, 0x00, 0xe0, 0xbc, 0x0f, 0x00, 0x00, /* 0x11700-0x1173f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11740-0x1177f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11780-0x117bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x117c0-0x117ff */
+  /* 0x11c00-0x11dff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0x3f, /* 0x11c00-0x11c3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11c40-0x11c7f */
+  0x00, 0x00, 0xfc, 0xff, 0xff, 0xfc, 0x6d, 0x00, /* 0x11c80-0x11cbf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11cc0-0x11cff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11d00-0x11d3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11d40-0x11d7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11d80-0x11dbf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11dc0-0x11dff */
+  /* 0x16a00-0x16bff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16a00-0x16a3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16a40-0x16a7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16a80-0x16abf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x00, /* 0x16ac0-0x16aff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0x00, /* 0x16b00-0x16b3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16b40-0x16b7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16b80-0x16bbf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16bc0-0x16bff */
+  /* 0x16e00-0x16fff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16e00-0x16e3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16e40-0x16e7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16e80-0x16ebf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16ec0-0x16eff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16f00-0x16f3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16f40-0x16f7f */
+  0x00, 0x80, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16f80-0x16fbf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16fc0-0x16fff */
+  /* 0x1bc00-0x1bdff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1bc00-0x1bc3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1bc40-0x1bc7f */
+  0x00, 0x00, 0x00, 0x60, 0x0f, 0x00, 0x00, 0x00, /* 0x1bc80-0x1bcbf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1bcc0-0x1bcff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1bd00-0x1bd3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1bd40-0x1bd7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1bd80-0x1bdbf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1bdc0-0x1bdff */
+  /* 0x1d000-0x1d1ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d000-0x1d03f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d040-0x1d07f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d080-0x1d0bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d0c0-0x1d0ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d100-0x1d13f */
+  0x00, 0x00, 0x00, 0x00, 0x80, 0x03, 0xf8, 0xff, /* 0x1d140-0x1d17f */
+  0xe7, 0x0f, 0x00, 0x00, 0x00, 0x3c, 0x00, 0x00, /* 0x1d180-0x1d1bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d1c0-0x1d1ff */
+  /* 0x1d200-0x1d3ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d200-0x1d23f */
+  0x1c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d240-0x1d27f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d280-0x1d2bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d2c0-0x1d2ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d300-0x1d33f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d340-0x1d37f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d380-0x1d3bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d3c0-0x1d3ff */
+  /* 0x1da00-0x1dbff */
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f, 0xf8, /* 0x1da00-0x1da3f */
+  0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0x20, 0x00, /* 0x1da40-0x1da7f */
+  0x10, 0x00, 0x00, 0xf8, 0xfe, 0xff, 0x00, 0x00, /* 0x1da80-0x1dabf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1dac0-0x1daff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1db00-0x1db3f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1db40-0x1db7f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1db80-0x1dbbf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1dbc0-0x1dbff */
+  /* 0x1e000-0x1e1ff */
+  0x7f, 0xff, 0xff, 0xf9, 0xdb, 0x07, 0x00, 0x00, /* 0x1e000-0x1e03f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e040-0x1e07f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e080-0x1e0bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e0c0-0x1e0ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e100-0x1e13f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e140-0x1e17f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e180-0x1e1bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e1c0-0x1e1ff */
+  /* 0x1e800-0x1e9ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e800-0x1e83f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e840-0x1e87f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e880-0x1e8bf */
+  0x00, 0x00, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e8c0-0x1e8ff */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e900-0x1e93f */
+  0xf0, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e940-0x1e97f */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1e980-0x1e9bf */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00  /* 0x1e9c0-0x1e9ff */
+};
+static const signed char nonspacing_table_ind[248] = {
+   0,  1,  2,  3,  4,  5,  6,  7, /* 0x0000-0x0fff */
+   8,  9, -1, 10, 11, 12, 13, -1, /* 0x1000-0x1fff */
+  14, -1, -1, -1, -1, -1, 15, -1, /* 0x2000-0x2fff */
+  16, -1, -1, -1, -1, -1, -1, -1, /* 0x3000-0x3fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x4000-0x4fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x5000-0x5fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x6000-0x6fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x7000-0x7fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x8000-0x8fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x9000-0x9fff */
+  -1, -1, -1, 17, 18, 19, -1, -1, /* 0xa000-0xafff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0xb000-0xbfff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0xc000-0xcfff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0xd000-0xdfff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0xe000-0xefff */
+  -1, -1, -1, -1, -1, 20, -1, 21, /* 0xf000-0xffff */
+  22, 23, -1, -1, -1, 24, -1, -1, /* 0x10000-0x10fff */
+  25, 26, 27, 28, -1, -1, 29, -1, /* 0x11000-0x11fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x12000-0x12fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x13000-0x13fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x14000-0x14fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x15000-0x15fff */
+  -1, -1, -1, -1, -1, 30, -1, 31, /* 0x16000-0x16fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x17000-0x17fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x18000-0x18fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x19000-0x19fff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x1a000-0x1afff */
+  -1, -1, -1, -1, -1, -1, 32, -1, /* 0x1b000-0x1bfff */
+  -1, -1, -1, -1, -1, -1, -1, -1, /* 0x1c000-0x1cfff */
+  33, 34, -1, -1, -1, 35, -1, -1, /* 0x1d000-0x1dfff */
+  36, -1, -1, -1, 37, -1, -1, -1  /* 0x1e000-0x1efff */
+};
+
+/* Determine number of column positions required for UC.  */
+int
+uc_width (ucs4_t uc, const char *encoding)
+{
+  /* Test for non-spacing or control character.  */
+  if ((uc >> 9) < 248)
+    {
+      int ind = nonspacing_table_ind[uc >> 9];
+      if (ind >= 0)
+        if ((nonspacing_table_data[64*ind + ((uc >> 3) & 63)] >> (uc & 7)) & 1)
+          {
+            if (uc > 0 && uc < 0xa0)
+              return -1;
+            else
+              return 0;
+          }
+    }
+  else if ((uc >> 9) == (0xe0000 >> 9))
+    {
+      if (uc >= 0xe0100)
+        {
+          if (uc <= 0xe01ef)
+            return 0;
+        }
+      else
+        {
+          if (uc >= 0xe0020 ? uc <= 0xe007f : uc == 0xe0001)
+            return 0;
+        }
+    }
+  /* Test for double-width character.
+   * Generated from "grep '^[^;]\{4,5\};[WF]' EastAsianWidth.txt"
+   * and            "grep '^[^;]\{4,5\};[^WF]' EastAsianWidth.txt"
+   */
+  if (uc >= 0x1100
+      && ((uc < 0x1160) /* Hangul Jamo */
+          || (uc >= 0x2329 && uc < 0x232b) /* Angle Brackets */
+          || (uc >= 0x2e80 && uc < 0xa4d0  /* CJK ... Yi */
+              && !(uc == 0x303f) && !(uc >= 0x4dc0 && uc < 0x4e00))
+          || (uc >= 0xac00 && uc < 0xd7a4) /* Hangul Syllables */
+          || (uc >= 0xf900 && uc < 0xfb00) /* CJK Compatibility Ideographs */
+          || (uc >= 0xfe10 && uc < 0xfe20) /* Presentation Forms for Vertical */
+          || (uc >= 0xfe30 && uc < 0xfe70) /* CJK Compatibility Forms */
+          || (uc >= 0xff00 && uc < 0xff61) /* Fullwidth Forms */
+          || (uc >= 0xffe0 && uc < 0xffe7) /* Fullwidth Signs */
+          || (uc >= 0x20000 && uc <= 0x2ffff) /* Supplementary Ideographic Plane */
+          || (uc >= 0x30000 && uc <= 0x3ffff) /* Tertiary Ideographic Plane */
+     )   )
+    return 2;
+  /* In ancient CJK encodings, Cyrillic and most other characters are
+     double-width as well.  */
+  if (uc >= 0x00A1 && uc < 0xFF61 && uc != 0x20A9
+      && is_cjk_encoding (encoding))
+    return 2;
+  return 1;
+}
diff --git a/src/grep/lib/unlocked-io.h b/src/grep/lib/unlocked-io.h
new file mode 100644
index 0000000..ca184b3
--- /dev/null
+++ b/src/grep/lib/unlocked-io.h
@@ -0,0 +1,136 @@
+/* Prefer faster, non-thread-safe stdio functions if available.
+
+   Copyright (C) 2001-2004, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering.  */
+
+#ifndef UNLOCKED_IO_H
+# define UNLOCKED_IO_H 1
+
+/* These are wrappers for functions/macros from the GNU C library, and
+   from other C libraries supporting POSIX's optional thread-safe functions.
+
+   The standard I/O functions are thread-safe.  These *_unlocked ones are
+   more efficient but not thread-safe.  That they're not thread-safe is
+   fine since all of the applications in this package are single threaded.
+
+   Also, some code that is shared with the GNU C library may invoke
+   the *_unlocked functions directly.  On hosts that lack those
+   functions, invoke the non-thread-safe versions instead.  */
+
+# include <stdio.h>
+
+# if HAVE_DECL_CLEARERR_UNLOCKED || defined clearerr_unlocked
+#  undef clearerr
+#  define clearerr(x) clearerr_unlocked (x)
+# else
+#  define clearerr_unlocked(x) clearerr (x)
+# endif
+
+# if HAVE_DECL_FEOF_UNLOCKED || defined feof_unlocked
+#  undef feof
+#  define feof(x) feof_unlocked (x)
+# else
+#  define feof_unlocked(x) feof (x)
+# endif
+
+# if HAVE_DECL_FERROR_UNLOCKED || defined ferror_unlocked
+#  undef ferror
+#  define ferror(x) ferror_unlocked (x)
+# else
+#  define ferror_unlocked(x) ferror (x)
+# endif
+
+# if HAVE_DECL_FFLUSH_UNLOCKED || defined fflush_unlocked
+#  undef fflush
+#  define fflush(x) fflush_unlocked (x)
+# else
+#  define fflush_unlocked(x) fflush (x)
+# endif
+
+# if HAVE_DECL_FGETS_UNLOCKED || defined fgets_unlocked
+#  undef fgets
+#  define fgets(x,y,z) fgets_unlocked (x,y,z)
+# else
+#  define fgets_unlocked(x,y,z) fgets (x,y,z)
+# endif
+
+# if HAVE_DECL_FPUTC_UNLOCKED || defined fputc_unlocked
+#  undef fputc
+#  define fputc(x,y) fputc_unlocked (x,y)
+# else
+#  define fputc_unlocked(x,y) fputc (x,y)
+# endif
+
+# if HAVE_DECL_FPUTS_UNLOCKED || defined fputs_unlocked
+#  undef fputs
+#  define fputs(x,y) fputs_unlocked (x,y)
+# else
+#  define fputs_unlocked(x,y) fputs (x,y)
+# endif
+
+# if HAVE_DECL_FREAD_UNLOCKED || defined fread_unlocked
+#  undef fread
+#  define fread(w,x,y,z) fread_unlocked (w,x,y,z)
+# else
+#  define fread_unlocked(w,x,y,z) fread (w,x,y,z)
+# endif
+
+# if HAVE_DECL_FWRITE_UNLOCKED || defined fwrite_unlocked
+#  undef fwrite
+#  define fwrite(w,x,y,z) fwrite_unlocked (w,x,y,z)
+# else
+#  define fwrite_unlocked(w,x,y,z) fwrite (w,x,y,z)
+# endif
+
+# if HAVE_DECL_GETC_UNLOCKED || defined get_unlocked
+#  undef getc
+#  define getc(x) getc_unlocked (x)
+# else
+#  define getc_unlocked(x) getc (x)
+# endif
+
+# if HAVE_DECL_GETCHAR_UNLOCKED || defined getchar_unlocked
+#  undef getchar
+#  define getchar() getchar_unlocked ()
+# else
+#  define getchar_unlocked() getchar ()
+# endif
+
+# if HAVE_DECL_PUTC_UNLOCKED || defined putc_unlocked
+#  undef putc
+#  define putc(x,y) putc_unlocked (x,y)
+# else
+#  define putc_unlocked(x,y) putc (x,y)
+# endif
+
+# if HAVE_DECL_PUTCHAR_UNLOCKED || defined putchar_unlocked
+#  undef putchar
+#  define putchar(x) putchar_unlocked (x)
+# else
+#  define putchar_unlocked(x) putchar (x)
+# endif
+
+# undef flockfile
+# define flockfile(x) ((void) 0)
+
+# undef ftrylockfile
+# define ftrylockfile(x) 0
+
+# undef funlockfile
+# define funlockfile(x) ((void) 0)
+
+#endif /* UNLOCKED_IO_H */
diff --git a/src/grep/lib/verify.h b/src/grep/lib/verify.h
new file mode 100644
index 0000000..a8ca59b
--- /dev/null
+++ b/src/grep/lib/verify.h
@@ -0,0 +1,315 @@
+/* Compile-time assert-like macros.
+
+   Copyright (C) 2005-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert, Bruno Haible, and Jim Meyering.  */
+
+#ifndef _GL_VERIFY_H
+#define _GL_VERIFY_H
+
+
+/* Define _GL_HAVE__STATIC_ASSERT to 1 if _Static_assert (R, DIAGNOSTIC)
+   works as per C11.  This is supported by GCC 4.6.0+ and by clang 4+.
+
+   Define _GL_HAVE__STATIC_ASSERT1 to 1 if _Static_assert (R) works as
+   per C2x.  This is supported by GCC 9.1+.
+
+   Support compilers claiming conformance to the relevant standard,
+   and also support GCC when not pedantic.  If we were willing to slow
+   'configure' down we could also use it with other compilers, but
+   since this affects only the quality of diagnostics, why bother?  */
+#ifndef __cplusplus
+# if (201112L <= __STDC_VERSION__ \
+      || (!defined __STRICT_ANSI__ \
+          && (4 < __GNUC__ + (6 <= __GNUC_MINOR__) || 4 <= __clang_major__)))
+#  define _GL_HAVE__STATIC_ASSERT 1
+# endif
+# if (202000L <= __STDC_VERSION__ \
+      || (!defined __STRICT_ANSI__ && 9 <= __GNUC__))
+#  define _GL_HAVE__STATIC_ASSERT1 1
+# endif
+#endif
+
+/* FreeBSD 9.1 <sys/cdefs.h>, included by <stddef.h> and lots of other
+   system headers, defines a conflicting _Static_assert that is no
+   better than ours; override it.  */
+#ifndef _GL_HAVE__STATIC_ASSERT
+# include <stddef.h>
+# undef _Static_assert
+#endif
+
+/* Each of these macros verifies that its argument R is nonzero.  To
+   be portable, R should be an integer constant expression.  Unlike
+   assert (R), there is no run-time overhead.
+
+   If _Static_assert works, verify (R) uses it directly.  Similarly,
+   _GL_VERIFY_TRUE works by packaging a _Static_assert inside a struct
+   that is an operand of sizeof.
+
+   The code below uses several ideas for C++ compilers, and for C
+   compilers that do not support _Static_assert:
+
+   * The first step is ((R) ? 1 : -1).  Given an expression R, of
+     integral or boolean or floating-point type, this yields an
+     expression of integral type, whose value is later verified to be
+     constant and nonnegative.
+
+   * Next this expression W is wrapped in a type
+     struct _gl_verify_type {
+       unsigned int _gl_verify_error_if_negative: W;
+     }.
+     If W is negative, this yields a compile-time error.  No compiler can
+     deal with a bit-field of negative size.
+
+     One might think that an array size check would have the same
+     effect, that is, that the type struct { unsigned int dummy[W]; }
+     would work as well.  However, inside a function, some compilers
+     (such as C++ compilers and GNU C) allow local parameters and
+     variables inside array size expressions.  With these compilers,
+     an array size check would not properly diagnose this misuse of
+     the verify macro:
+
+       void function (int n) { verify (n < 0); }
+
+   * For the verify macro, the struct _gl_verify_type will need to
+     somehow be embedded into a declaration.  To be portable, this
+     declaration must declare an object, a constant, a function, or a
+     typedef name.  If the declared entity uses the type directly,
+     such as in
+
+       struct dummy {...};
+       typedef struct {...} dummy;
+       extern struct {...} *dummy;
+       extern void dummy (struct {...} *);
+       extern struct {...} *dummy (void);
+
+     two uses of the verify macro would yield colliding declarations
+     if the entity names are not disambiguated.  A workaround is to
+     attach the current line number to the entity name:
+
+       #define _GL_CONCAT0(x, y) x##y
+       #define _GL_CONCAT(x, y) _GL_CONCAT0 (x, y)
+       extern struct {...} * _GL_CONCAT (dummy, __LINE__);
+
+     But this has the problem that two invocations of verify from
+     within the same macro would collide, since the __LINE__ value
+     would be the same for both invocations.  (The GCC __COUNTER__
+     macro solves this problem, but is not portable.)
+
+     A solution is to use the sizeof operator.  It yields a number,
+     getting rid of the identity of the type.  Declarations like
+
+       extern int dummy [sizeof (struct {...})];
+       extern void dummy (int [sizeof (struct {...})]);
+       extern int (*dummy (void)) [sizeof (struct {...})];
+
+     can be repeated.
+
+   * Should the implementation use a named struct or an unnamed struct?
+     Which of the following alternatives can be used?
+
+       extern int dummy [sizeof (struct {...})];
+       extern int dummy [sizeof (struct _gl_verify_type {...})];
+       extern void dummy (int [sizeof (struct {...})]);
+       extern void dummy (int [sizeof (struct _gl_verify_type {...})]);
+       extern int (*dummy (void)) [sizeof (struct {...})];
+       extern int (*dummy (void)) [sizeof (struct _gl_verify_type {...})];
+
+     In the second and sixth case, the struct type is exported to the
+     outer scope; two such declarations therefore collide.  GCC warns
+     about the first, third, and fourth cases.  So the only remaining
+     possibility is the fifth case:
+
+       extern int (*dummy (void)) [sizeof (struct {...})];
+
+   * GCC warns about duplicate declarations of the dummy function if
+     -Wredundant-decls is used.  GCC 4.3 and later have a builtin
+     __COUNTER__ macro that can let us generate unique identifiers for
+     each dummy function, to suppress this warning.
+
+   * This implementation exploits the fact that older versions of GCC,
+     which do not support _Static_assert, also do not warn about the
+     last declaration mentioned above.
+
+   * GCC warns if -Wnested-externs is enabled and 'verify' is used
+     within a function body; but inside a function, you can always
+     arrange to use verify_expr instead.
+
+   * In C++, any struct definition inside sizeof is invalid.
+     Use a template type to work around the problem.  */
+
+/* Concatenate two preprocessor tokens.  */
+#define _GL_CONCAT(x, y) _GL_CONCAT0 (x, y)
+#define _GL_CONCAT0(x, y) x##y
+
+/* _GL_COUNTER is an integer, preferably one that changes each time we
+   use it.  Use __COUNTER__ if it works, falling back on __LINE__
+   otherwise.  __LINE__ isn't perfect, but it's better than a
+   constant.  */
+#if defined __COUNTER__ && __COUNTER__ != __COUNTER__
+# define _GL_COUNTER __COUNTER__
+#else
+# define _GL_COUNTER __LINE__
+#endif
+
+/* Generate a symbol with the given prefix, making it unique if
+   possible.  */
+#define _GL_GENSYM(prefix) _GL_CONCAT (prefix, _GL_COUNTER)
+
+/* Verify requirement R at compile-time, as an integer constant expression
+   that returns 1.  If R is false, fail at compile-time, preferably
+   with a diagnostic that includes the string-literal DIAGNOSTIC.  */
+
+#define _GL_VERIFY_TRUE(R, DIAGNOSTIC) \
+   (!!sizeof (_GL_VERIFY_TYPE (R, DIAGNOSTIC)))
+
+#ifdef __cplusplus
+# if !GNULIB_defined_struct__gl_verify_type
+template <int w>
+  struct _gl_verify_type {
+    unsigned int _gl_verify_error_if_negative: w;
+  };
+#  define GNULIB_defined_struct__gl_verify_type 1
+# endif
+# define _GL_VERIFY_TYPE(R, DIAGNOSTIC) \
+    _gl_verify_type<(R) ? 1 : -1>
+#elif defined _GL_HAVE__STATIC_ASSERT
+# define _GL_VERIFY_TYPE(R, DIAGNOSTIC) \
+    struct {                                   \
+      _Static_assert (R, DIAGNOSTIC);          \
+      int _gl_dummy;                          \
+    }
+#else
+# define _GL_VERIFY_TYPE(R, DIAGNOSTIC) \
+    struct { unsigned int _gl_verify_error_if_negative: (R) ? 1 : -1; }
+#endif
+
+/* Verify requirement R at compile-time, as a declaration without a
+   trailing ';'.  If R is false, fail at compile-time.
+
+   This macro requires three or more arguments but uses at most the first
+   two, so that the _Static_assert macro optionally defined below supports
+   both the C11 two-argument syntax and the C2x one-argument syntax.
+
+   Unfortunately, unlike C11, this implementation must appear as an
+   ordinary declaration, and cannot appear inside struct { ... }.  */
+
+#if 200410 <= __cpp_static_assert
+# define _GL_VERIFY(R, DIAGNOSTIC, ...) static_assert (R, DIAGNOSTIC)
+#elif defined _GL_HAVE__STATIC_ASSERT
+# define _GL_VERIFY(R, DIAGNOSTIC, ...) _Static_assert (R, DIAGNOSTIC)
+#else
+# define _GL_VERIFY(R, DIAGNOSTIC, ...)                                \
+    extern int (*_GL_GENSYM (_gl_verify_function) (void))	       \
+      [_GL_VERIFY_TRUE (R, DIAGNOSTIC)]
+#endif
+
+/* _GL_STATIC_ASSERT_H is defined if this code is copied into assert.h.  */
+#ifdef _GL_STATIC_ASSERT_H
+# if !defined _GL_HAVE__STATIC_ASSERT1 && !defined _Static_assert
+#  define _Static_assert(...) \
+     _GL_VERIFY (__VA_ARGS__, "static assertion failed", -)
+# endif
+# if __cpp_static_assert < 201411 && !defined static_assert
+#  define static_assert _Static_assert /* C11 requires this #define.  */
+# endif
+#endif
+
+/* @assert.h omit start@  */
+
+#if 3 < __GNUC__ + (3 < __GNUC_MINOR__ + (4 <= __GNUC_PATCHLEVEL__))
+# define _GL_HAS_BUILTIN_TRAP 1
+#elif defined __has_builtin
+# define _GL_HAS_BUILTIN_TRAP __has_builtin (__builtin_trap)
+#else
+# define _GL_HAS_BUILTIN_TRAP 0
+#endif
+
+#if 4 < __GNUC__ + (5 <= __GNUC_MINOR__)
+# define _GL_HAS_BUILTIN_UNREACHABLE 1
+#elif defined __has_builtin
+# define _GL_HAS_BUILTIN_UNREACHABLE __has_builtin (__builtin_unreachable)
+#else
+# define _GL_HAS_BUILTIN_UNREACHABLE 0
+#endif
+
+/* Each of these macros verifies that its argument R is nonzero.  To
+   be portable, R should be an integer constant expression.  Unlike
+   assert (R), there is no run-time overhead.
+
+   There are two macros, since no single macro can be used in all
+   contexts in C.  verify_expr (R, E) is for scalar contexts, including
+   integer constant expression contexts.  verify (R) is for declaration
+   contexts, e.g., the top level.  */
+
+/* Verify requirement R at compile-time.  Return the value of the
+   expression E.  */
+
+#define verify_expr(R, E) \
+   (_GL_VERIFY_TRUE (R, "verify_expr (" #R ", " #E ")") ? (E) : (E))
+
+/* Verify requirement R at compile-time, as a declaration without a
+   trailing ';'.  verify (R) acts like static_assert (R) except that
+   it is portable to C11/C++14 and earlier, it can issue better
+   diagnostics, and its name is shorter and may be more convenient.  */
+
+#ifdef __PGI
+/* PGI barfs if R is long.  */
+# define verify(R) _GL_VERIFY (R, "verify (...)", -)
+#else
+# define verify(R) _GL_VERIFY (R, "verify (" #R ")", -)
+#endif
+
+/* Assume that R always holds.  Behavior is undefined if R is false,
+   fails to evaluate, or has side effects.
+
+   'assume (R)' is a directive from the programmer telling the
+   compiler that R is true so the compiler needn't generate code to
+   test R.  This is why 'assume' is in verify.h: it's related to
+   static checking (in this case, static checking done by the
+   programmer), not dynamic checking.
+
+   'assume (R)' can affect compilation of all the code, not just code
+   that happens to be executed after the assume (R) is "executed".
+   For example, if the code mistakenly does 'assert (R); assume (R);'
+   the compiler is entitled to optimize away the 'assert (R)'.
+
+   Although assuming R can help a compiler generate better code or
+   diagnostics, performance can suffer if R uses hard-to-optimize
+   features such as function calls not inlined by the compiler.
+
+   Avoid Clang's __builtin_assume, as it breaks GNU Emacs master
+   as of 2020-08-23T21:09:49Z!eggert@cs.ucla.edu; see
+   <https://bugs.gnu.org/43152#71>.  It's not known whether this breakage
+   is a Clang bug or an Emacs bug; play it safe for now.  */
+
+#if _GL_HAS_BUILTIN_UNREACHABLE
+# define assume(R) ((R) ? (void) 0 : __builtin_unreachable ())
+#elif 1200 <= _MSC_VER
+# define assume(R) __assume (R)
+#elif (defined GCC_LINT || defined lint) && _GL_HAS_BUILTIN_TRAP
+  /* Doing it this way helps various packages when configured with
+     --enable-gcc-warnings, which compiles with -Dlint.  It's nicer
+     when 'assume' silences warnings even with older GCCs.  */
+# define assume(R) ((R) ? (void) 0 : __builtin_trap ())
+#else
+  /* Some tools grok NOTREACHED, e.g., Oracle Studio 12.6.  */
+# define assume(R) ((R) ? (void) 0 : /*NOTREACHED*/ (void) 0)
+#endif
+
+/* @assert.h omit end@  */
+
+#endif
diff --git a/src/grep/lib/version-etc-fsf.c b/src/grep/lib/version-etc-fsf.c
new file mode 100644
index 0000000..e27ab14
--- /dev/null
+++ b/src/grep/lib/version-etc-fsf.c
@@ -0,0 +1,30 @@
+/* Variable with FSF copyright information, for version-etc.
+   Copyright (C) 1999-2006, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering. */
+
+#include <config.h>
+
+/* Specification.  */
+#include "version-etc.h"
+
+/* Default copyright goes to the FSF. */
+
+const char version_etc_copyright[] =
+  /* Do *not* mark this string for translation.  %s is a copyright
+     symbol suitable for this locale, and %d is the copyright
+     year.  */
+  "Copyright %s %d Free Software Foundation, Inc.";
diff --git a/src/grep/lib/version-etc.c b/src/grep/lib/version-etc.c
new file mode 100644
index 0000000..ce4ef45
--- /dev/null
+++ b/src/grep/lib/version-etc.c
@@ -0,0 +1,262 @@
+/* Print --version and bug-reporting information in a consistent format.
+   Copyright (C) 1999-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering. */
+
+#include <config.h>
+
+/* Specification.  */
+#include "version-etc.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+/* If you use AM_INIT_AUTOMAKE's no-define option,
+   PACKAGE is not defined.  Use PACKAGE_TARNAME instead.  */
+#if ! defined PACKAGE && defined PACKAGE_TARNAME
+# define PACKAGE PACKAGE_TARNAME
+#endif
+
+enum { COPYRIGHT_YEAR = 2021 };
+
+/* The three functions below display the --version information the
+   standard way.
+
+   If COMMAND_NAME is NULL, the PACKAGE is assumed to be the name of
+   the program.  The formats are therefore:
+
+   PACKAGE VERSION
+
+   or
+
+   COMMAND_NAME (PACKAGE) VERSION.
+
+   The functions differ in the way they are passed author names. */
+
+/* Display the --version information the standard way.
+
+   Author names are given in the array AUTHORS. N_AUTHORS is the
+   number of elements in the array. */
+void
+version_etc_arn (FILE *stream,
+                 const char *command_name, const char *package,
+                 const char *version,
+                 const char * const * authors, size_t n_authors)
+{
+  if (command_name)
+    fprintf (stream, "%s (%s) %s\n", command_name, package, version);
+  else
+    fprintf (stream, "%s %s\n", package, version);
+
+#ifdef PACKAGE_PACKAGER
+# ifdef PACKAGE_PACKAGER_VERSION
+  fprintf (stream, _("Packaged by %s (%s)\n"), PACKAGE_PACKAGER,
+           PACKAGE_PACKAGER_VERSION);
+# else
+  fprintf (stream, _("Packaged by %s\n"), PACKAGE_PACKAGER);
+# endif
+#endif
+
+  /* TRANSLATORS: Translate "(C)" to the copyright symbol
+     (C-in-a-circle), if this symbol is available in the user's
+     locale.  Otherwise, do not translate "(C)"; leave it as-is.  */
+  fprintf (stream, version_etc_copyright, _("(C)"), COPYRIGHT_YEAR);
+
+  fputs ("\n", stream);
+
+  /* TRANSLATORS: The %s placeholder is the web address of the GPL license.  */
+  fprintf (stream, _("\
+License GPLv3+: GNU GPL version 3 or later <%s>.\n\
+This is free software: you are free to change and redistribute it.\n\
+There is NO WARRANTY, to the extent permitted by law.\n\
+"),
+           "https://gnu.org/licenses/gpl.html");
+
+  fputs ("\n", stream);
+
+  switch (n_authors)
+    {
+    case 0:
+      /* No authors are given.  The caller should output authorship
+         info after calling this function.  */
+      break;
+    case 1:
+      /* TRANSLATORS: %s denotes an author name.  */
+      fprintf (stream, _("Written by %s.\n"), authors[0]);
+      break;
+    case 2:
+      /* TRANSLATORS: Each %s denotes an author name.  */
+      fprintf (stream, _("Written by %s and %s.\n"), authors[0], authors[1]);
+      break;
+    case 3:
+      /* TRANSLATORS: Each %s denotes an author name.  */
+      fprintf (stream, _("Written by %s, %s, and %s.\n"),
+               authors[0], authors[1], authors[2]);
+      break;
+    case 4:
+      /* TRANSLATORS: Each %s denotes an author name.
+         You can use line breaks, estimating that each author name occupies
+         ca. 16 screen columns and that a screen line has ca. 80 columns.  */
+      fprintf (stream, _("Written by %s, %s, %s,\nand %s.\n"),
+               authors[0], authors[1], authors[2], authors[3]);
+      break;
+    case 5:
+      /* TRANSLATORS: Each %s denotes an author name.
+         You can use line breaks, estimating that each author name occupies
+         ca. 16 screen columns and that a screen line has ca. 80 columns.  */
+      fprintf (stream, _("Written by %s, %s, %s,\n%s, and %s.\n"),
+               authors[0], authors[1], authors[2], authors[3], authors[4]);
+      break;
+    case 6:
+      /* TRANSLATORS: Each %s denotes an author name.
+         You can use line breaks, estimating that each author name occupies
+         ca. 16 screen columns and that a screen line has ca. 80 columns.  */
+      fprintf (stream, _("Written by %s, %s, %s,\n%s, %s, and %s.\n"),
+               authors[0], authors[1], authors[2], authors[3], authors[4],
+               authors[5]);
+      break;
+    case 7:
+      /* TRANSLATORS: Each %s denotes an author name.
+         You can use line breaks, estimating that each author name occupies
+         ca. 16 screen columns and that a screen line has ca. 80 columns.  */
+      fprintf (stream, _("Written by %s, %s, %s,\n%s, %s, %s, and %s.\n"),
+               authors[0], authors[1], authors[2], authors[3], authors[4],
+               authors[5], authors[6]);
+      break;
+    case 8:
+      /* TRANSLATORS: Each %s denotes an author name.
+         You can use line breaks, estimating that each author name occupies
+         ca. 16 screen columns and that a screen line has ca. 80 columns.  */
+      fprintf (stream, _("\
+Written by %s, %s, %s,\n%s, %s, %s, %s,\nand %s.\n"),
+                authors[0], authors[1], authors[2], authors[3], authors[4],
+                authors[5], authors[6], authors[7]);
+      break;
+    case 9:
+      /* TRANSLATORS: Each %s denotes an author name.
+         You can use line breaks, estimating that each author name occupies
+         ca. 16 screen columns and that a screen line has ca. 80 columns.  */
+      fprintf (stream, _("\
+Written by %s, %s, %s,\n%s, %s, %s, %s,\n%s, and %s.\n"),
+               authors[0], authors[1], authors[2], authors[3], authors[4],
+               authors[5], authors[6], authors[7], authors[8]);
+      break;
+    default:
+      /* 10 or more authors.  Use an abbreviation, since the human reader
+         will probably not want to read the entire list anyway.  */
+      /* TRANSLATORS: Each %s denotes an author name.
+         You can use line breaks, estimating that each author name occupies
+         ca. 16 screen columns and that a screen line has ca. 80 columns.  */
+      fprintf (stream, _("\
+Written by %s, %s, %s,\n%s, %s, %s, %s,\n%s, %s, and others.\n"),
+                authors[0], authors[1], authors[2], authors[3], authors[4],
+                authors[5], authors[6], authors[7], authors[8]);
+      break;
+    }
+}
+
+/* Display the --version information the standard way.  See the initial
+   comment to this module, for more information.
+
+   Author names are given in the NULL-terminated array AUTHORS. */
+void
+version_etc_ar (FILE *stream,
+                const char *command_name, const char *package,
+                const char *version, const char * const * authors)
+{
+  size_t n_authors;
+
+  for (n_authors = 0; authors[n_authors]; n_authors++)
+    ;
+  version_etc_arn (stream, command_name, package, version, authors, n_authors);
+}
+
+/* Display the --version information the standard way.  See the initial
+   comment to this module, for more information.
+
+   Author names are given in the NULL-terminated va_list AUTHORS. */
+void
+version_etc_va (FILE *stream,
+                const char *command_name, const char *package,
+                const char *version, va_list authors)
+{
+  size_t n_authors;
+  const char *authtab[10];
+
+  for (n_authors = 0;
+       n_authors < 10
+         && (authtab[n_authors] = va_arg (authors, const char *)) != NULL;
+       n_authors++)
+    ;
+  version_etc_arn (stream, command_name, package, version,
+                   authtab, n_authors);
+}
+
+
+/* Display the --version information the standard way.
+
+   If COMMAND_NAME is NULL, the PACKAGE is assumed to be the name of
+   the program.  The formats are therefore:
+
+   PACKAGE VERSION
+
+   or
+
+   COMMAND_NAME (PACKAGE) VERSION.
+
+   The authors names are passed as separate arguments, with an additional
+   NULL argument at the end.  */
+void
+version_etc (FILE *stream,
+             const char *command_name, const char *package,
+             const char *version, /* const char *author1, ...*/ ...)
+{
+  va_list authors;
+
+  va_start (authors, version);
+  version_etc_va (stream, command_name, package, version, authors);
+  va_end (authors);
+}
+
+void
+emit_bug_reporting_address (void)
+{
+  fputs ("\n", stdout);
+  /* TRANSLATORS: The placeholder indicates the bug-reporting address
+     for this package.  Please add _another line_ saying
+     "Report translation bugs to <...>\n" with the address for translation
+     bugs (typically your translation team's web or email address).  */
+  printf (_("Report bugs to: %s\n"), PACKAGE_BUGREPORT);
+#ifdef PACKAGE_PACKAGER_BUG_REPORTS
+  printf (_("Report %s bugs to: %s\n"), PACKAGE_PACKAGER,
+          PACKAGE_PACKAGER_BUG_REPORTS);
+#endif
+#ifdef PACKAGE_URL
+  printf (_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
+#else
+  printf (_("%s home page: <%s>\n"),
+          PACKAGE_NAME, "https://www.gnu.org/software/" PACKAGE "/");
+#endif
+  printf (_("General help using GNU software: <%s>\n"),
+          "https://www.gnu.org/gethelp/");
+}
diff --git a/src/grep/lib/version-etc.h b/src/grep/lib/version-etc.h
new file mode 100644
index 0000000..3f04732
--- /dev/null
+++ b/src/grep/lib/version-etc.h
@@ -0,0 +1,69 @@
+/* Print --version and bug-reporting information in a consistent format.
+   Copyright (C) 1999, 2003, 2005, 2009-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering. */
+
+#ifndef VERSION_ETC_H
+# define VERSION_ETC_H 1
+
+# include <stdarg.h>
+# include <stdio.h>
+
+extern const char version_etc_copyright[];
+
+/* The three functions below display the --version information in the
+   standard way: command and package names, package version, followed
+   by a short GPLv3+ notice and a list of up to 10 author names.
+
+   If COMMAND_NAME is NULL, the PACKAGE is assumed to be the name of
+   the program.  The formats are therefore:
+
+   PACKAGE VERSION
+
+   or
+
+   COMMAND_NAME (PACKAGE) VERSION.
+
+   The functions differ in the way they are passed author names: */
+
+/* N_AUTHORS names are supplied in array AUTHORS.  */
+extern void version_etc_arn (FILE *stream,
+                             const char *command_name, const char *package,
+                             const char *version,
+                             const char * const * authors, size_t n_authors);
+
+/* Names are passed in the NULL-terminated array AUTHORS.  */
+extern void version_etc_ar (FILE *stream,
+                            const char *command_name, const char *package,
+                            const char *version, const char * const * authors);
+
+/* Names are passed in the NULL-terminated va_list.  */
+extern void version_etc_va (FILE *stream,
+                            const char *command_name, const char *package,
+                            const char *version, va_list authors);
+
+/* Names are passed as separate arguments, with an additional
+   NULL argument at the end.  */
+extern void version_etc (FILE *stream,
+                         const char *command_name, const char *package,
+                         const char *version,
+                         /* const char *author1, ..., NULL */ ...)
+  _GL_ATTRIBUTE_SENTINEL ((0));
+
+/* Display the usual "Report bugs to" stanza.  */
+extern void emit_bug_reporting_address (void);
+
+#endif /* VERSION_ETC_H */
diff --git a/src/grep/lib/w32-initialize-main.c b/src/grep/lib/w32-initialize-main.c
new file mode 100644
index 0000000..a7eaedd
--- /dev/null
+++ b/src/grep/lib/w32-initialize-main.c
@@ -0,0 +1,17 @@
+
+
+
+#include "config.h"
+#include <corecrt_startup.h>
+
+
+void w32_initialize_main(int *pcArgs, char ***ppapszArgs)
+{
+    if (!getenv("KMK_GREP_NO_EXPANSION"))
+    {
+        _configure_narrow_argv(_crt_argv_expanded_arguments);
+        *pcArgs = __argc;
+        *ppapszArgs = __argv;
+    }
+}
+
diff --git a/src/grep/lib/warn-on-use.h b/src/grep/lib/warn-on-use.h
new file mode 100644
index 0000000..612937a
--- /dev/null
+++ b/src/grep/lib/warn-on-use.h
@@ -0,0 +1,149 @@
+/* A C macro for emitting warnings if a function is used.
+   Copyright (C) 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* _GL_WARN_ON_USE (function, "literal string") issues a declaration
+   for FUNCTION which will then trigger a compiler warning containing
+   the text of "literal string" anywhere that function is called, if
+   supported by the compiler.  If the compiler does not support this
+   feature, the macro expands to an unused extern declaration.
+
+   _GL_WARN_ON_USE_ATTRIBUTE ("literal string") expands to the
+   attribute used in _GL_WARN_ON_USE.  If the compiler does not support
+   this feature, it expands to empty.
+
+   These macros are useful for marking a function as a potential
+   portability trap, with the intent that "literal string" include
+   instructions on the replacement function that should be used
+   instead.
+   _GL_WARN_ON_USE is for functions with 'extern' linkage.
+   _GL_WARN_ON_USE_ATTRIBUTE is for functions with 'static' or 'inline'
+   linkage.
+
+   However, one of the reasons that a function is a portability trap is
+   if it has the wrong signature.  Declaring FUNCTION with a different
+   signature in C is a compilation error, so this macro must use the
+   same type as any existing declaration so that programs that avoid
+   the problematic FUNCTION do not fail to compile merely because they
+   included a header that poisoned the function.  But this implies that
+   _GL_WARN_ON_USE is only safe to use if FUNCTION is known to already
+   have a declaration.  Use of this macro implies that there must not
+   be any other macro hiding the declaration of FUNCTION; but
+   undefining FUNCTION first is part of the poisoning process anyway
+   (although for symbols that are provided only via a macro, the result
+   is a compilation error rather than a warning containing
+   "literal string").  Also note that in C++, it is only safe to use if
+   FUNCTION has no overloads.
+
+   For an example, it is possible to poison 'getline' by:
+   - adding a call to gl_WARN_ON_USE_PREPARE([[#include <stdio.h>]],
+     [getline]) in configure.ac, which potentially defines
+     HAVE_RAW_DECL_GETLINE
+   - adding this code to a header that wraps the system <stdio.h>:
+     #undef getline
+     #if HAVE_RAW_DECL_GETLINE
+     _GL_WARN_ON_USE (getline, "getline is required by POSIX 2008, but"
+       "not universally present; use the gnulib module getline");
+     #endif
+
+   It is not possible to directly poison global variables.  But it is
+   possible to write a wrapper accessor function, and poison that
+   (less common usage, like &environ, will cause a compilation error
+   rather than issue the nice warning, but the end result of informing
+   the developer about their portability problem is still achieved):
+     #if HAVE_RAW_DECL_ENVIRON
+     static char ***
+     rpl_environ (void) { return &environ; }
+     _GL_WARN_ON_USE (rpl_environ, "environ is not always properly declared");
+     # undef environ
+     # define environ (*rpl_environ ())
+     #endif
+   or better (avoiding contradictory use of 'static' and 'extern'):
+     #if HAVE_RAW_DECL_ENVIRON
+     static char ***
+     _GL_WARN_ON_USE_ATTRIBUTE ("environ is not always properly declared")
+     rpl_environ (void) { return &environ; }
+     # undef environ
+     # define environ (*rpl_environ ())
+     #endif
+   */
+#ifndef _GL_WARN_ON_USE
+
+# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
+/* A compiler attribute is available in gcc versions 4.3.0 and later.  */
+#  define _GL_WARN_ON_USE(function, message) \
+extern __typeof__ (function) function __attribute__ ((__warning__ (message)))
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message) \
+  __attribute__ ((__warning__ (message)))
+# elif __clang_major__ >= 4
+/* Another compiler attribute is available in clang.  */
+#  define _GL_WARN_ON_USE(function, message) \
+extern __typeof__ (function) function \
+  __attribute__ ((__diagnose_if__ (1, message, "warning")))
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message) \
+  __attribute__ ((__diagnose_if__ (1, message, "warning")))
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+/* Verify the existence of the function.  */
+#  define _GL_WARN_ON_USE(function, message) \
+extern __typeof__ (function) function
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message)
+# else /* Unsupported.  */
+#  define _GL_WARN_ON_USE(function, message) \
+_GL_WARN_EXTERN_C int _gl_warn_on_use
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message)
+# endif
+#endif
+
+/* _GL_WARN_ON_USE_CXX (function, rettype_gcc, rettype_clang, parameters_and_attributes, "message")
+   is like _GL_WARN_ON_USE (function, "message"), except that in C++ mode the
+   function is declared with the given prototype, consisting of return type,
+   parameters, and attributes.
+   This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does
+   not work in this case.  */
+#ifndef _GL_WARN_ON_USE_CXX
+# if !defined __cplusplus
+#  define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+     _GL_WARN_ON_USE (function, msg)
+# else
+#  if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
+/* A compiler attribute is available in gcc versions 4.3.0 and later.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_gcc function parameters_and_attributes \
+  __attribute__ ((__warning__ (msg)))
+#  elif __clang_major__ >= 4
+/* Another compiler attribute is available in clang.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_clang function parameters_and_attributes \
+  __attribute__ ((__diagnose_if__ (1, msg, "warning")))
+#  elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+/* Verify the existence of the function.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_gcc function parameters_and_attributes
+#  else /* Unsupported.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+_GL_WARN_EXTERN_C int _gl_warn_on_use
+#  endif
+# endif
+#endif
+
+/* _GL_WARN_EXTERN_C declaration;
+   performs the declaration with C linkage.  */
+#ifndef _GL_WARN_EXTERN_C
+# if defined __cplusplus
+#  define _GL_WARN_EXTERN_C extern "C"
+# else
+#  define _GL_WARN_EXTERN_C extern
+# endif
+#endif
diff --git a/src/grep/lib/wchar.in.h b/src/grep/lib/wchar.in.h
new file mode 100644
index 0000000..be5d36c
--- /dev/null
+++ b/src/grep/lib/wchar.in.h
@@ -0,0 +1,1273 @@
+/* A substitute for ISO C99 <wchar.h>, for platforms that have issues.
+
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake.  */
+
+/*
+ * ISO C 99 <wchar.h> for platforms that have issues.
+ * <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/wchar.h.html>
+ *
+ * For now, this just ensures proper prerequisite inclusion order and
+ * the declaration of wcwidth().
+ */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if (((defined __need_mbstate_t || defined __need_wint_t)               \
+      && !defined __MINGW32__)                                          \
+     || (defined __hpux                                                 \
+         && ((defined _INTTYPES_INCLUDED                                \
+              && !defined _GL_FINISHED_INCLUDING_SYSTEM_INTTYPES_H)     \
+             || defined _GL_JUST_INCLUDE_SYSTEM_WCHAR_H))               \
+     || (defined __MINGW32__ && defined __STRING_H_SOURCED__)           \
+     || defined _GL_ALREADY_INCLUDING_WCHAR_H)
+/* Special invocation convention:
+   - Inside glibc and uClibc header files, but not MinGW.
+   - On HP-UX 11.00 we have a sequence of nested includes
+     <wchar.h> -> <stdlib.h> -> <stdint.h>, and the latter includes <wchar.h>,
+     once indirectly <stdint.h> -> <sys/types.h> -> <inttypes.h> -> <wchar.h>
+     and once directly.  In both situations 'wint_t' is not yet defined,
+     therefore we cannot provide the function overrides; instead include only
+     the system's <wchar.h>.
+   - With MinGW 3.22, when <string.h> includes <wchar.h>, only some part of
+     <wchar.h> is actually processed, and that doesn't include 'mbstate_t'.
+   - On IRIX 6.5, similarly, we have an include <wchar.h> -> <wctype.h>, and
+     the latter includes <wchar.h>.  But here, we have no way to detect whether
+     <wctype.h> is completely included or is still being included.  */
+
+#@INCLUDE_NEXT@ @NEXT_WCHAR_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_WCHAR_H
+
+#define _GL_ALREADY_INCLUDING_WCHAR_H
+
+#if @HAVE_FEATURES_H@
+# include <features.h> /* for __GLIBC__ */
+#endif
+
+/* In some builds of uClibc, <wchar.h> is nonexistent and wchar_t is defined
+   by <stddef.h>.
+   But avoid namespace pollution on glibc systems.  */
+#if !(defined __GLIBC__ && !defined __UCLIBC__)
+# include <stddef.h>
+#endif
+
+/* Get free().  */
+#include <stdlib.h>
+
+/* Include the original <wchar.h> if it exists.
+   Some builds of uClibc lack it.  */
+/* The include_next requires a split double-inclusion guard.  */
+#if @HAVE_WCHAR_H@
+# @INCLUDE_NEXT@ @NEXT_WCHAR_H@
+#endif
+
+#undef _GL_ALREADY_INCLUDING_WCHAR_H
+
+#ifndef _@GUARD_PREFIX@_WCHAR_H
+#define _@GUARD_PREFIX@_WCHAR_H
+
+/* The __attribute__ feature is available in gcc versions 2.5 and later.
+   The attribute __pure__ was added in gcc 2.96.  */
+#ifndef _GL_ATTRIBUTE_PURE
+# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || defined __clang__
+#  define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+# else
+#  define _GL_ATTRIBUTE_PURE /* empty */
+# endif
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
+/* Define wint_t and WEOF.  (Also done in wctype.in.h.)  */
+#if !@HAVE_WINT_T@ && !defined wint_t
+# define wint_t int
+# ifndef WEOF
+#  define WEOF -1
+# endif
+#else
+/* mingw and MSVC define wint_t as 'unsigned short' in <crtdefs.h> or
+   <stddef.h>.  This is too small: ISO C 99 section 7.24.1.(2) says that
+   wint_t must be "unchanged by default argument promotions".  Override it.  */
+# if @GNULIBHEADERS_OVERRIDE_WINT_T@
+#  if !GNULIB_defined_wint_t
+#   if @HAVE_CRTDEFS_H@
+#    include <crtdefs.h>
+#   else
+#    include <stddef.h>
+#   endif
+typedef unsigned int rpl_wint_t;
+#   undef wint_t
+#   define wint_t rpl_wint_t
+#   define GNULIB_defined_wint_t 1
+#  endif
+# endif
+# ifndef WEOF
+#  define WEOF ((wint_t) -1)
+# endif
+#endif
+
+
+/* Override mbstate_t if it is too small.
+   On IRIX 6.5, sizeof (mbstate_t) == 1, which is not sufficient for
+   implementing mbrtowc for encodings like UTF-8.
+   On AIX and MSVC, mbrtowc needs to be overridden, but mbstate_t exists and is
+   large enough and overriding it would cause problems in C++ mode.  */
+#if !(((defined _WIN32 && !defined __CYGWIN__) || @HAVE_MBSINIT@) && @HAVE_MBRTOWC@) || @REPLACE_MBSTATE_T@
+# if !GNULIB_defined_mbstate_t
+#  if !(defined _AIX || defined _MSC_VER)
+typedef int rpl_mbstate_t;
+#   undef mbstate_t
+#   define mbstate_t rpl_mbstate_t
+#  endif
+#  define GNULIB_defined_mbstate_t 1
+# endif
+#endif
+
+
+/* Convert a single-byte character to a wide character.  */
+#if @GNULIB_BTOWC@
+# if @REPLACE_BTOWC@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef btowc
+#   define btowc rpl_btowc
+#  endif
+_GL_FUNCDECL_RPL (btowc, wint_t, (int c) _GL_ATTRIBUTE_PURE);
+_GL_CXXALIAS_RPL (btowc, wint_t, (int c));
+# else
+#  if !@HAVE_BTOWC@
+_GL_FUNCDECL_SYS (btowc, wint_t, (int c) _GL_ATTRIBUTE_PURE);
+#  endif
+/* Need to cast, because on mingw, the return type is 'unsigned short'.  */
+_GL_CXXALIAS_SYS_CAST (btowc, wint_t, (int c));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (btowc);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef btowc
+# if HAVE_RAW_DECL_BTOWC
+_GL_WARN_ON_USE (btowc, "btowc is unportable - "
+                 "use gnulib module btowc for portability");
+# endif
+#endif
+
+
+/* Convert a wide character to a single-byte character.  */
+#if @GNULIB_WCTOB@
+# if @REPLACE_WCTOB@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef wctob
+#   define wctob rpl_wctob
+#  endif
+_GL_FUNCDECL_RPL (wctob, int, (wint_t wc) _GL_ATTRIBUTE_PURE);
+_GL_CXXALIAS_RPL (wctob, int, (wint_t wc));
+# else
+#  if !defined wctob && !@HAVE_DECL_WCTOB@
+/* wctob is provided by gnulib, or wctob exists but is not declared.  */
+_GL_FUNCDECL_SYS (wctob, int, (wint_t wc) _GL_ATTRIBUTE_PURE);
+#  endif
+_GL_CXXALIAS_SYS (wctob, int, (wint_t wc));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wctob);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wctob
+# if HAVE_RAW_DECL_WCTOB
+_GL_WARN_ON_USE (wctob, "wctob is unportable - "
+                 "use gnulib module wctob for portability");
+# endif
+#endif
+
+
+/* Test whether *PS is in the initial state.  */
+#if @GNULIB_MBSINIT@
+# if @REPLACE_MBSINIT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mbsinit
+#   define mbsinit rpl_mbsinit
+#  endif
+_GL_FUNCDECL_RPL (mbsinit, int, (const mbstate_t *ps));
+_GL_CXXALIAS_RPL (mbsinit, int, (const mbstate_t *ps));
+# else
+#  if !@HAVE_MBSINIT@
+_GL_FUNCDECL_SYS (mbsinit, int, (const mbstate_t *ps));
+#  endif
+_GL_CXXALIAS_SYS (mbsinit, int, (const mbstate_t *ps));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (mbsinit);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mbsinit
+# if HAVE_RAW_DECL_MBSINIT
+_GL_WARN_ON_USE (mbsinit, "mbsinit is unportable - "
+                 "use gnulib module mbsinit for portability");
+# endif
+#endif
+
+
+/* Convert a multibyte character to a wide character.  */
+#if @GNULIB_MBRTOWC@
+# if @REPLACE_MBRTOWC@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mbrtowc
+#   define mbrtowc rpl_mbrtowc
+#  endif
+_GL_FUNCDECL_RPL (mbrtowc, size_t,
+                  (wchar_t *restrict pwc, const char *restrict s, size_t n,
+                   mbstate_t *restrict ps));
+_GL_CXXALIAS_RPL (mbrtowc, size_t,
+                  (wchar_t *restrict pwc, const char *restrict s, size_t n,
+                   mbstate_t *restrict ps));
+# else
+#  if !@HAVE_MBRTOWC@
+_GL_FUNCDECL_SYS (mbrtowc, size_t,
+                  (wchar_t *restrict pwc, const char *restrict s, size_t n,
+                   mbstate_t *restrict ps));
+#  endif
+_GL_CXXALIAS_SYS (mbrtowc, size_t,
+                  (wchar_t *restrict pwc, const char *restrict s, size_t n,
+                   mbstate_t *restrict ps));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (mbrtowc);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mbrtowc
+# if HAVE_RAW_DECL_MBRTOWC
+_GL_WARN_ON_USE (mbrtowc, "mbrtowc is unportable - "
+                 "use gnulib module mbrtowc for portability");
+# endif
+#endif
+
+
+/* Recognize a multibyte character.  */
+#if @GNULIB_MBRLEN@
+# if @REPLACE_MBRLEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mbrlen
+#   define mbrlen rpl_mbrlen
+#  endif
+_GL_FUNCDECL_RPL (mbrlen, size_t,
+                  (const char *restrict s, size_t n, mbstate_t *restrict ps));
+_GL_CXXALIAS_RPL (mbrlen, size_t,
+                  (const char *restrict s, size_t n, mbstate_t *restrict ps));
+# else
+#  if !@HAVE_MBRLEN@
+_GL_FUNCDECL_SYS (mbrlen, size_t,
+                  (const char *restrict s, size_t n, mbstate_t *restrict ps));
+#  endif
+_GL_CXXALIAS_SYS (mbrlen, size_t,
+                  (const char *restrict s, size_t n, mbstate_t *restrict ps));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (mbrlen);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mbrlen
+# if HAVE_RAW_DECL_MBRLEN
+_GL_WARN_ON_USE (mbrlen, "mbrlen is unportable - "
+                 "use gnulib module mbrlen for portability");
+# endif
+#endif
+
+
+/* Convert a string to a wide string.  */
+#if @GNULIB_MBSRTOWCS@
+# if @REPLACE_MBSRTOWCS@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mbsrtowcs
+#   define mbsrtowcs rpl_mbsrtowcs
+#  endif
+_GL_FUNCDECL_RPL (mbsrtowcs, size_t,
+                  (wchar_t *restrict dest,
+                   const char **restrict srcp, size_t len,
+                   mbstate_t *restrict ps)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (mbsrtowcs, size_t,
+                  (wchar_t *restrict dest,
+                   const char **restrict srcp, size_t len,
+                   mbstate_t *restrict ps));
+# else
+#  if !@HAVE_MBSRTOWCS@
+_GL_FUNCDECL_SYS (mbsrtowcs, size_t,
+                  (wchar_t *restrict dest,
+                   const char **restrict srcp, size_t len,
+                   mbstate_t *restrict ps)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (mbsrtowcs, size_t,
+                  (wchar_t *restrict dest,
+                   const char **restrict srcp, size_t len,
+                   mbstate_t *restrict ps));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (mbsrtowcs);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mbsrtowcs
+# if HAVE_RAW_DECL_MBSRTOWCS
+_GL_WARN_ON_USE (mbsrtowcs, "mbsrtowcs is unportable - "
+                 "use gnulib module mbsrtowcs for portability");
+# endif
+#endif
+
+
+/* Convert a string to a wide string.  */
+#if @GNULIB_MBSNRTOWCS@
+# if @REPLACE_MBSNRTOWCS@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mbsnrtowcs
+#   define mbsnrtowcs rpl_mbsnrtowcs
+#  endif
+_GL_FUNCDECL_RPL (mbsnrtowcs, size_t,
+                  (wchar_t *restrict dest,
+                   const char **restrict srcp, size_t srclen, size_t len,
+                   mbstate_t *restrict ps)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (mbsnrtowcs, size_t,
+                  (wchar_t *restrict dest,
+                   const char **restrict srcp, size_t srclen, size_t len,
+                   mbstate_t *restrict ps));
+# else
+#  if !@HAVE_MBSNRTOWCS@
+_GL_FUNCDECL_SYS (mbsnrtowcs, size_t,
+                  (wchar_t *restrict dest,
+                   const char **restrict srcp, size_t srclen, size_t len,
+                   mbstate_t *restrict ps)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (mbsnrtowcs, size_t,
+                  (wchar_t *restrict dest,
+                   const char **restrict srcp, size_t srclen, size_t len,
+                   mbstate_t *restrict ps));
+# endif
+_GL_CXXALIASWARN (mbsnrtowcs);
+#elif defined GNULIB_POSIXCHECK
+# undef mbsnrtowcs
+# if HAVE_RAW_DECL_MBSNRTOWCS
+_GL_WARN_ON_USE (mbsnrtowcs, "mbsnrtowcs is unportable - "
+                 "use gnulib module mbsnrtowcs for portability");
+# endif
+#endif
+
+
+/* Convert a wide character to a multibyte character.  */
+#if @GNULIB_WCRTOMB@
+# if @REPLACE_WCRTOMB@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef wcrtomb
+#   define wcrtomb rpl_wcrtomb
+#  endif
+_GL_FUNCDECL_RPL (wcrtomb, size_t,
+                  (char *restrict s, wchar_t wc, mbstate_t *restrict ps));
+_GL_CXXALIAS_RPL (wcrtomb, size_t,
+                  (char *restrict s, wchar_t wc, mbstate_t *restrict ps));
+# else
+#  if !@HAVE_WCRTOMB@
+_GL_FUNCDECL_SYS (wcrtomb, size_t,
+                  (char *restrict s, wchar_t wc, mbstate_t *restrict ps));
+#  endif
+_GL_CXXALIAS_SYS (wcrtomb, size_t,
+                  (char *restrict s, wchar_t wc, mbstate_t *restrict ps));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcrtomb);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcrtomb
+# if HAVE_RAW_DECL_WCRTOMB
+_GL_WARN_ON_USE (wcrtomb, "wcrtomb is unportable - "
+                 "use gnulib module wcrtomb for portability");
+# endif
+#endif
+
+
+/* Convert a wide string to a string.  */
+#if @GNULIB_WCSRTOMBS@
+# if @REPLACE_WCSRTOMBS@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef wcsrtombs
+#   define wcsrtombs rpl_wcsrtombs
+#  endif
+_GL_FUNCDECL_RPL (wcsrtombs, size_t,
+                  (char *restrict dest, const wchar_t **restrict srcp,
+                   size_t len,
+                   mbstate_t *restrict ps)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (wcsrtombs, size_t,
+                  (char *restrict dest, const wchar_t **restrict srcp,
+                   size_t len,
+                   mbstate_t *restrict ps));
+# else
+#  if !@HAVE_WCSRTOMBS@
+_GL_FUNCDECL_SYS (wcsrtombs, size_t,
+                  (char *restrict dest, const wchar_t **restrict srcp,
+                   size_t len,
+                   mbstate_t *restrict ps)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (wcsrtombs, size_t,
+                  (char *restrict dest, const wchar_t **restrict srcp,
+                   size_t len,
+                   mbstate_t *restrict ps));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcsrtombs);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcsrtombs
+# if HAVE_RAW_DECL_WCSRTOMBS
+_GL_WARN_ON_USE (wcsrtombs, "wcsrtombs is unportable - "
+                 "use gnulib module wcsrtombs for portability");
+# endif
+#endif
+
+
+/* Convert a wide string to a string.  */
+#if @GNULIB_WCSNRTOMBS@
+# if @REPLACE_WCSNRTOMBS@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef wcsnrtombs
+#   define wcsnrtombs rpl_wcsnrtombs
+#  endif
+_GL_FUNCDECL_RPL (wcsnrtombs, size_t,
+                  (char *restrict dest,
+                   const wchar_t **restrict srcp, size_t srclen,
+                   size_t len,
+                   mbstate_t *restrict ps)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (wcsnrtombs, size_t,
+                  (char *restrict dest,
+                   const wchar_t **restrict srcp, size_t srclen,
+                   size_t len,
+                   mbstate_t *restrict ps));
+# else
+#  if !@HAVE_WCSNRTOMBS@ || (defined __cplusplus && defined __sun)
+_GL_FUNCDECL_SYS (wcsnrtombs, size_t,
+                  (char *restrict dest,
+                   const wchar_t **restrict srcp, size_t srclen,
+                   size_t len,
+                   mbstate_t *restrict ps)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (wcsnrtombs, size_t,
+                  (char *restrict dest,
+                   const wchar_t **restrict srcp, size_t srclen,
+                   size_t len,
+                   mbstate_t *restrict ps));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcsnrtombs);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcsnrtombs
+# if HAVE_RAW_DECL_WCSNRTOMBS
+_GL_WARN_ON_USE (wcsnrtombs, "wcsnrtombs is unportable - "
+                 "use gnulib module wcsnrtombs for portability");
+# endif
+#endif
+
+
+/* Return the number of screen columns needed for WC.  */
+#if @GNULIB_WCWIDTH@
+# if @REPLACE_WCWIDTH@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef wcwidth
+#   define wcwidth rpl_wcwidth
+#  endif
+_GL_FUNCDECL_RPL (wcwidth, int, (wchar_t) _GL_ATTRIBUTE_PURE);
+_GL_CXXALIAS_RPL (wcwidth, int, (wchar_t));
+# else
+#  if !@HAVE_DECL_WCWIDTH@
+/* wcwidth exists but is not declared.  */
+_GL_FUNCDECL_SYS (wcwidth, int, (wchar_t) _GL_ATTRIBUTE_PURE);
+#  endif
+_GL_CXXALIAS_SYS (wcwidth, int, (wchar_t));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcwidth);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcwidth
+# if HAVE_RAW_DECL_WCWIDTH
+_GL_WARN_ON_USE (wcwidth, "wcwidth is unportable - "
+                 "use gnulib module wcwidth for portability");
+# endif
+#endif
+
+
+/* Search N wide characters of S for C.  */
+#if @GNULIB_WMEMCHR@
+# if !@HAVE_WMEMCHR@
+_GL_FUNCDECL_SYS (wmemchr, wchar_t *, (const wchar_t *s, wchar_t c, size_t n)
+                                      _GL_ATTRIBUTE_PURE);
+# endif
+  /* On some systems, this function is defined as an overloaded function:
+       extern "C++" {
+         const wchar_t * std::wmemchr (const wchar_t *, wchar_t, size_t);
+         wchar_t * std::wmemchr (wchar_t *, wchar_t, size_t);
+       }  */
+_GL_CXXALIAS_SYS_CAST2 (wmemchr,
+                        wchar_t *, (const wchar_t *, wchar_t, size_t),
+                        const wchar_t *, (const wchar_t *, wchar_t, size_t));
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+_GL_CXXALIASWARN1 (wmemchr, wchar_t *, (wchar_t *s, wchar_t c, size_t n));
+_GL_CXXALIASWARN1 (wmemchr, const wchar_t *,
+                   (const wchar_t *s, wchar_t c, size_t n));
+# elif __GLIBC__ >= 2
+_GL_CXXALIASWARN (wmemchr);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wmemchr
+# if HAVE_RAW_DECL_WMEMCHR
+_GL_WARN_ON_USE (wmemchr, "wmemchr is unportable - "
+                 "use gnulib module wmemchr for portability");
+# endif
+#endif
+
+
+/* Compare N wide characters of S1 and S2.  */
+#if @GNULIB_WMEMCMP@
+# if !@HAVE_WMEMCMP@
+_GL_FUNCDECL_SYS (wmemcmp, int,
+                  (const wchar_t *s1, const wchar_t *s2, size_t n)
+                  _GL_ATTRIBUTE_PURE);
+# endif
+_GL_CXXALIAS_SYS (wmemcmp, int,
+                  (const wchar_t *s1, const wchar_t *s2, size_t n));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wmemcmp);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wmemcmp
+# if HAVE_RAW_DECL_WMEMCMP
+_GL_WARN_ON_USE (wmemcmp, "wmemcmp is unportable - "
+                 "use gnulib module wmemcmp for portability");
+# endif
+#endif
+
+
+/* Copy N wide characters of SRC to DEST.  */
+#if @GNULIB_WMEMCPY@
+# if !@HAVE_WMEMCPY@
+_GL_FUNCDECL_SYS (wmemcpy, wchar_t *,
+                  (wchar_t *restrict dest,
+                   const wchar_t *restrict src, size_t n));
+# endif
+_GL_CXXALIAS_SYS (wmemcpy, wchar_t *,
+                  (wchar_t *restrict dest,
+                   const wchar_t *restrict src, size_t n));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wmemcpy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wmemcpy
+# if HAVE_RAW_DECL_WMEMCPY
+_GL_WARN_ON_USE (wmemcpy, "wmemcpy is unportable - "
+                 "use gnulib module wmemcpy for portability");
+# endif
+#endif
+
+
+/* Copy N wide characters of SRC to DEST, guaranteeing correct behavior for
+   overlapping memory areas.  */
+#if @GNULIB_WMEMMOVE@
+# if !@HAVE_WMEMMOVE@
+_GL_FUNCDECL_SYS (wmemmove, wchar_t *,
+                  (wchar_t *dest, const wchar_t *src, size_t n));
+# endif
+_GL_CXXALIAS_SYS (wmemmove, wchar_t *,
+                  (wchar_t *dest, const wchar_t *src, size_t n));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wmemmove);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wmemmove
+# if HAVE_RAW_DECL_WMEMMOVE
+_GL_WARN_ON_USE (wmemmove, "wmemmove is unportable - "
+                 "use gnulib module wmemmove for portability");
+# endif
+#endif
+
+
+/* Copy N wide characters of SRC to DEST.
+   Return pointer to wide characters after the last written wide character.  */
+#if @GNULIB_WMEMPCPY@
+# if !@HAVE_WMEMPCPY@
+_GL_FUNCDECL_SYS (wmempcpy, wchar_t *,
+                  (wchar_t *restrict dest,
+                   const wchar_t *restrict src, size_t n));
+# endif
+_GL_CXXALIAS_SYS (wmempcpy, wchar_t *,
+                  (wchar_t *restrict dest,
+                   const wchar_t *restrict src, size_t n));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wmempcpy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wmempcpy
+# if HAVE_RAW_DECL_WMEMPCPY
+_GL_WARN_ON_USE (wmempcpy, "wmempcpy is unportable - "
+                 "use gnulib module wmempcpy for portability");
+# endif
+#endif
+
+
+/* Set N wide characters of S to C.  */
+#if @GNULIB_WMEMSET@
+# if !@HAVE_WMEMSET@
+_GL_FUNCDECL_SYS (wmemset, wchar_t *, (wchar_t *s, wchar_t c, size_t n));
+# endif
+_GL_CXXALIAS_SYS (wmemset, wchar_t *, (wchar_t *s, wchar_t c, size_t n));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wmemset);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wmemset
+# if HAVE_RAW_DECL_WMEMSET
+_GL_WARN_ON_USE (wmemset, "wmemset is unportable - "
+                 "use gnulib module wmemset for portability");
+# endif
+#endif
+
+
+/* Return the number of wide characters in S.  */
+#if @GNULIB_WCSLEN@
+# if !@HAVE_WCSLEN@
+_GL_FUNCDECL_SYS (wcslen, size_t, (const wchar_t *s) _GL_ATTRIBUTE_PURE);
+# endif
+_GL_CXXALIAS_SYS (wcslen, size_t, (const wchar_t *s));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcslen);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcslen
+# if HAVE_RAW_DECL_WCSLEN
+_GL_WARN_ON_USE (wcslen, "wcslen is unportable - "
+                 "use gnulib module wcslen for portability");
+# endif
+#endif
+
+
+/* Return the number of wide characters in S, but at most MAXLEN.  */
+#if @GNULIB_WCSNLEN@
+# if !@HAVE_WCSNLEN@
+_GL_FUNCDECL_SYS (wcsnlen, size_t, (const wchar_t *s, size_t maxlen)
+                                   _GL_ATTRIBUTE_PURE);
+# endif
+_GL_CXXALIAS_SYS (wcsnlen, size_t, (const wchar_t *s, size_t maxlen));
+_GL_CXXALIASWARN (wcsnlen);
+#elif defined GNULIB_POSIXCHECK
+# undef wcsnlen
+# if HAVE_RAW_DECL_WCSNLEN
+_GL_WARN_ON_USE (wcsnlen, "wcsnlen is unportable - "
+                 "use gnulib module wcsnlen for portability");
+# endif
+#endif
+
+
+/* Copy SRC to DEST.  */
+#if @GNULIB_WCSCPY@
+# if !@HAVE_WCSCPY@
+_GL_FUNCDECL_SYS (wcscpy, wchar_t *,
+                  (wchar_t *restrict dest, const wchar_t *restrict src));
+# endif
+_GL_CXXALIAS_SYS (wcscpy, wchar_t *,
+                  (wchar_t *restrict dest, const wchar_t *restrict src));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcscpy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcscpy
+# if HAVE_RAW_DECL_WCSCPY
+_GL_WARN_ON_USE (wcscpy, "wcscpy is unportable - "
+                 "use gnulib module wcscpy for portability");
+# endif
+#endif
+
+
+/* Copy SRC to DEST, returning the address of the terminating L'\0' in DEST.  */
+#if @GNULIB_WCPCPY@
+# if !@HAVE_WCPCPY@
+_GL_FUNCDECL_SYS (wcpcpy, wchar_t *,
+                  (wchar_t *restrict dest, const wchar_t *restrict src));
+# endif
+_GL_CXXALIAS_SYS (wcpcpy, wchar_t *,
+                  (wchar_t *restrict dest, const wchar_t *restrict src));
+_GL_CXXALIASWARN (wcpcpy);
+#elif defined GNULIB_POSIXCHECK
+# undef wcpcpy
+# if HAVE_RAW_DECL_WCPCPY
+_GL_WARN_ON_USE (wcpcpy, "wcpcpy is unportable - "
+                 "use gnulib module wcpcpy for portability");
+# endif
+#endif
+
+
+/* Copy no more than N wide characters of SRC to DEST.  */
+#if @GNULIB_WCSNCPY@
+# if !@HAVE_WCSNCPY@
+_GL_FUNCDECL_SYS (wcsncpy, wchar_t *,
+                  (wchar_t *restrict dest,
+                   const wchar_t *restrict src, size_t n));
+# endif
+_GL_CXXALIAS_SYS (wcsncpy, wchar_t *,
+                  (wchar_t *restrict dest,
+                   const wchar_t *restrict src, size_t n));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcsncpy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcsncpy
+# if HAVE_RAW_DECL_WCSNCPY
+_GL_WARN_ON_USE (wcsncpy, "wcsncpy is unportable - "
+                 "use gnulib module wcsncpy for portability");
+# endif
+#endif
+
+
+/* Copy no more than N characters of SRC to DEST, returning the address of
+   the last character written into DEST.  */
+#if @GNULIB_WCPNCPY@
+# if !@HAVE_WCPNCPY@
+_GL_FUNCDECL_SYS (wcpncpy, wchar_t *,
+                  (wchar_t *restrict dest,
+                   const wchar_t *restrict src, size_t n));
+# endif
+_GL_CXXALIAS_SYS (wcpncpy, wchar_t *,
+                  (wchar_t *restrict dest,
+                   const wchar_t *restrict src, size_t n));
+_GL_CXXALIASWARN (wcpncpy);
+#elif defined GNULIB_POSIXCHECK
+# undef wcpncpy
+# if HAVE_RAW_DECL_WCPNCPY
+_GL_WARN_ON_USE (wcpncpy, "wcpncpy is unportable - "
+                 "use gnulib module wcpncpy for portability");
+# endif
+#endif
+
+
+/* Append SRC onto DEST.  */
+#if @GNULIB_WCSCAT@
+# if !@HAVE_WCSCAT@
+_GL_FUNCDECL_SYS (wcscat, wchar_t *,
+                  (wchar_t *restrict dest, const wchar_t *restrict src));
+# endif
+_GL_CXXALIAS_SYS (wcscat, wchar_t *,
+                  (wchar_t *restrict dest, const wchar_t *restrict src));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcscat);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcscat
+# if HAVE_RAW_DECL_WCSCAT
+_GL_WARN_ON_USE (wcscat, "wcscat is unportable - "
+                 "use gnulib module wcscat for portability");
+# endif
+#endif
+
+
+/* Append no more than N wide characters of SRC onto DEST.  */
+#if @GNULIB_WCSNCAT@
+# if !@HAVE_WCSNCAT@
+_GL_FUNCDECL_SYS (wcsncat, wchar_t *,
+                  (wchar_t *restrict dest, const wchar_t *restrict src,
+                   size_t n));
+# endif
+_GL_CXXALIAS_SYS (wcsncat, wchar_t *,
+                  (wchar_t *restrict dest, const wchar_t *restrict src,
+                   size_t n));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcsncat);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcsncat
+# if HAVE_RAW_DECL_WCSNCAT
+_GL_WARN_ON_USE (wcsncat, "wcsncat is unportable - "
+                 "use gnulib module wcsncat for portability");
+# endif
+#endif
+
+
+/* Compare S1 and S2.  */
+#if @GNULIB_WCSCMP@
+# if !@HAVE_WCSCMP@
+_GL_FUNCDECL_SYS (wcscmp, int, (const wchar_t *s1, const wchar_t *s2)
+                               _GL_ATTRIBUTE_PURE);
+# endif
+_GL_CXXALIAS_SYS (wcscmp, int, (const wchar_t *s1, const wchar_t *s2));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcscmp);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcscmp
+# if HAVE_RAW_DECL_WCSCMP
+_GL_WARN_ON_USE (wcscmp, "wcscmp is unportable - "
+                 "use gnulib module wcscmp for portability");
+# endif
+#endif
+
+
+/* Compare no more than N wide characters of S1 and S2.  */
+#if @GNULIB_WCSNCMP@
+# if !@HAVE_WCSNCMP@
+_GL_FUNCDECL_SYS (wcsncmp, int,
+                  (const wchar_t *s1, const wchar_t *s2, size_t n)
+                  _GL_ATTRIBUTE_PURE);
+# endif
+_GL_CXXALIAS_SYS (wcsncmp, int,
+                  (const wchar_t *s1, const wchar_t *s2, size_t n));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcsncmp);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcsncmp
+# if HAVE_RAW_DECL_WCSNCMP
+_GL_WARN_ON_USE (wcsncmp, "wcsncmp is unportable - "
+                 "use gnulib module wcsncmp for portability");
+# endif
+#endif
+
+
+/* Compare S1 and S2, ignoring case.  */
+#if @GNULIB_WCSCASECMP@
+# if !@HAVE_WCSCASECMP@
+_GL_FUNCDECL_SYS (wcscasecmp, int, (const wchar_t *s1, const wchar_t *s2)
+                                   _GL_ATTRIBUTE_PURE);
+# endif
+_GL_CXXALIAS_SYS (wcscasecmp, int, (const wchar_t *s1, const wchar_t *s2));
+_GL_CXXALIASWARN (wcscasecmp);
+#elif defined GNULIB_POSIXCHECK
+# undef wcscasecmp
+# if HAVE_RAW_DECL_WCSCASECMP
+_GL_WARN_ON_USE (wcscasecmp, "wcscasecmp is unportable - "
+                 "use gnulib module wcscasecmp for portability");
+# endif
+#endif
+
+
+/* Compare no more than N chars of S1 and S2, ignoring case.  */
+#if @GNULIB_WCSNCASECMP@
+# if !@HAVE_WCSNCASECMP@
+_GL_FUNCDECL_SYS (wcsncasecmp, int,
+                  (const wchar_t *s1, const wchar_t *s2, size_t n)
+                  _GL_ATTRIBUTE_PURE);
+# endif
+_GL_CXXALIAS_SYS (wcsncasecmp, int,
+                  (const wchar_t *s1, const wchar_t *s2, size_t n));
+_GL_CXXALIASWARN (wcsncasecmp);
+#elif defined GNULIB_POSIXCHECK
+# undef wcsncasecmp
+# if HAVE_RAW_DECL_WCSNCASECMP
+_GL_WARN_ON_USE (wcsncasecmp, "wcsncasecmp is unportable - "
+                 "use gnulib module wcsncasecmp for portability");
+# endif
+#endif
+
+
+/* Compare S1 and S2, both interpreted as appropriate to the LC_COLLATE
+   category of the current locale.  */
+#if @GNULIB_WCSCOLL@
+# if !@HAVE_WCSCOLL@
+_GL_FUNCDECL_SYS (wcscoll, int, (const wchar_t *s1, const wchar_t *s2));
+# endif
+_GL_CXXALIAS_SYS (wcscoll, int, (const wchar_t *s1, const wchar_t *s2));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcscoll);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcscoll
+# if HAVE_RAW_DECL_WCSCOLL
+_GL_WARN_ON_USE (wcscoll, "wcscoll is unportable - "
+                 "use gnulib module wcscoll for portability");
+# endif
+#endif
+
+
+/* Transform S2 into array pointed to by S1 such that if wcscmp is applied
+   to two transformed strings the result is the as applying 'wcscoll' to the
+   original strings.  */
+#if @GNULIB_WCSXFRM@
+# if !@HAVE_WCSXFRM@
+_GL_FUNCDECL_SYS (wcsxfrm, size_t,
+                  (wchar_t *restrict s1, const wchar_t *restrict s2, size_t n));
+# endif
+_GL_CXXALIAS_SYS (wcsxfrm, size_t,
+                  (wchar_t *restrict s1, const wchar_t *restrict s2, size_t n));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcsxfrm);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcsxfrm
+# if HAVE_RAW_DECL_WCSXFRM
+_GL_WARN_ON_USE (wcsxfrm, "wcsxfrm is unportable - "
+                 "use gnulib module wcsxfrm for portability");
+# endif
+#endif
+
+
+/* Duplicate S, returning an identical malloc'd string.  */
+#if @GNULIB_WCSDUP@
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef wcsdup
+#   define wcsdup _wcsdup
+#  endif
+_GL_CXXALIAS_MDA (wcsdup, wchar_t *, (const wchar_t *s));
+# else
+#  if !@HAVE_WCSDUP@ || __GNUC__ >= 11
+_GL_FUNCDECL_SYS (wcsdup, wchar_t *,
+                  (const wchar_t *s)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+#  endif
+_GL_CXXALIAS_SYS (wcsdup, wchar_t *, (const wchar_t *s));
+# endif
+_GL_CXXALIASWARN (wcsdup);
+#else
+# if __GNUC__ >= 11 && !defined wcsdup
+/* For -Wmismatched-dealloc: Associate wcsdup with free or rpl_free.  */
+_GL_FUNCDECL_SYS (wcsdup, wchar_t *,
+                  (const wchar_t *s)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef wcsdup
+#  if HAVE_RAW_DECL_WCSDUP
+_GL_WARN_ON_USE (wcsdup, "wcsdup is unportable - "
+                 "use gnulib module wcsdup for portability");
+#  endif
+# elif @GNULIB_MDA_WCSDUP@
+/* On native Windows, map 'wcsdup' to '_wcsdup', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::wcsdup always.  */
+#  if defined _WIN32 && !defined __CYGWIN__
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef wcsdup
+#    define wcsdup _wcsdup
+#   endif
+_GL_CXXALIAS_MDA (wcsdup, wchar_t *, (const wchar_t *s));
+#  else
+_GL_FUNCDECL_SYS (wcsdup, wchar_t *,
+                  (const wchar_t *s)
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+#   if @HAVE_DECL_WCSDUP@
+_GL_CXXALIAS_SYS (wcsdup, wchar_t *, (const wchar_t *s));
+#   endif
+#  endif
+#  if (defined _WIN32 && !defined __CYGWIN__) || @HAVE_DECL_WCSDUP@
+_GL_CXXALIASWARN (wcsdup);
+#  endif
+# endif
+#endif
+
+
+/* Find the first occurrence of WC in WCS.  */
+#if @GNULIB_WCSCHR@
+# if !@HAVE_WCSCHR@
+_GL_FUNCDECL_SYS (wcschr, wchar_t *, (const wchar_t *wcs, wchar_t wc)
+                                     _GL_ATTRIBUTE_PURE);
+# endif
+  /* On some systems, this function is defined as an overloaded function:
+       extern "C++" {
+         const wchar_t * std::wcschr (const wchar_t *, wchar_t);
+         wchar_t * std::wcschr (wchar_t *, wchar_t);
+       }  */
+_GL_CXXALIAS_SYS_CAST2 (wcschr,
+                        wchar_t *, (const wchar_t *, wchar_t),
+                        const wchar_t *, (const wchar_t *, wchar_t));
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+_GL_CXXALIASWARN1 (wcschr, wchar_t *, (wchar_t *wcs, wchar_t wc));
+_GL_CXXALIASWARN1 (wcschr, const wchar_t *, (const wchar_t *wcs, wchar_t wc));
+# elif __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcschr);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcschr
+# if HAVE_RAW_DECL_WCSCHR
+_GL_WARN_ON_USE (wcschr, "wcschr is unportable - "
+                 "use gnulib module wcschr for portability");
+# endif
+#endif
+
+
+/* Find the last occurrence of WC in WCS.  */
+#if @GNULIB_WCSRCHR@
+# if !@HAVE_WCSRCHR@
+_GL_FUNCDECL_SYS (wcsrchr, wchar_t *, (const wchar_t *wcs, wchar_t wc)
+                                      _GL_ATTRIBUTE_PURE);
+# endif
+  /* On some systems, this function is defined as an overloaded function:
+       extern "C++" {
+         const wchar_t * std::wcsrchr (const wchar_t *, wchar_t);
+         wchar_t * std::wcsrchr (wchar_t *, wchar_t);
+       }  */
+_GL_CXXALIAS_SYS_CAST2 (wcsrchr,
+                        wchar_t *, (const wchar_t *, wchar_t),
+                        const wchar_t *, (const wchar_t *, wchar_t));
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+_GL_CXXALIASWARN1 (wcsrchr, wchar_t *, (wchar_t *wcs, wchar_t wc));
+_GL_CXXALIASWARN1 (wcsrchr, const wchar_t *, (const wchar_t *wcs, wchar_t wc));
+# elif __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcsrchr);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcsrchr
+# if HAVE_RAW_DECL_WCSRCHR
+_GL_WARN_ON_USE (wcsrchr, "wcsrchr is unportable - "
+                 "use gnulib module wcsrchr for portability");
+# endif
+#endif
+
+
+/* Return the length of the initial segmet of WCS which consists entirely
+   of wide characters not in REJECT.  */
+#if @GNULIB_WCSCSPN@
+# if !@HAVE_WCSCSPN@
+_GL_FUNCDECL_SYS (wcscspn, size_t, (const wchar_t *wcs, const wchar_t *reject)
+                                   _GL_ATTRIBUTE_PURE);
+# endif
+_GL_CXXALIAS_SYS (wcscspn, size_t, (const wchar_t *wcs, const wchar_t *reject));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcscspn);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcscspn
+# if HAVE_RAW_DECL_WCSCSPN
+_GL_WARN_ON_USE (wcscspn, "wcscspn is unportable - "
+                 "use gnulib module wcscspn for portability");
+# endif
+#endif
+
+
+/* Return the length of the initial segmet of WCS which consists entirely
+   of wide characters in ACCEPT.  */
+#if @GNULIB_WCSSPN@
+# if !@HAVE_WCSSPN@
+_GL_FUNCDECL_SYS (wcsspn, size_t, (const wchar_t *wcs, const wchar_t *accept)
+                                  _GL_ATTRIBUTE_PURE);
+# endif
+_GL_CXXALIAS_SYS (wcsspn, size_t, (const wchar_t *wcs, const wchar_t *accept));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcsspn);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcsspn
+# if HAVE_RAW_DECL_WCSSPN
+_GL_WARN_ON_USE (wcsspn, "wcsspn is unportable - "
+                 "use gnulib module wcsspn for portability");
+# endif
+#endif
+
+
+/* Find the first occurrence in WCS of any character in ACCEPT.  */
+#if @GNULIB_WCSPBRK@
+# if !@HAVE_WCSPBRK@
+_GL_FUNCDECL_SYS (wcspbrk, wchar_t *,
+                  (const wchar_t *wcs, const wchar_t *accept)
+                  _GL_ATTRIBUTE_PURE);
+# endif
+  /* On some systems, this function is defined as an overloaded function:
+       extern "C++" {
+         const wchar_t * std::wcspbrk (const wchar_t *, const wchar_t *);
+         wchar_t * std::wcspbrk (wchar_t *, const wchar_t *);
+       }  */
+_GL_CXXALIAS_SYS_CAST2 (wcspbrk,
+                        wchar_t *, (const wchar_t *, const wchar_t *),
+                        const wchar_t *, (const wchar_t *, const wchar_t *));
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+_GL_CXXALIASWARN1 (wcspbrk, wchar_t *,
+                   (wchar_t *wcs, const wchar_t *accept));
+_GL_CXXALIASWARN1 (wcspbrk, const wchar_t *,
+                   (const wchar_t *wcs, const wchar_t *accept));
+# elif __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcspbrk);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcspbrk
+# if HAVE_RAW_DECL_WCSPBRK
+_GL_WARN_ON_USE (wcspbrk, "wcspbrk is unportable - "
+                 "use gnulib module wcspbrk for portability");
+# endif
+#endif
+
+
+/* Find the first occurrence of NEEDLE in HAYSTACK.  */
+#if @GNULIB_WCSSTR@
+# if !@HAVE_WCSSTR@
+_GL_FUNCDECL_SYS (wcsstr, wchar_t *,
+                  (const wchar_t *restrict haystack,
+                   const wchar_t *restrict needle)
+                  _GL_ATTRIBUTE_PURE);
+# endif
+  /* On some systems, this function is defined as an overloaded function:
+       extern "C++" {
+         const wchar_t * std::wcsstr (const wchar_t *, const wchar_t *);
+         wchar_t * std::wcsstr (wchar_t *, const wchar_t *);
+       }  */
+_GL_CXXALIAS_SYS_CAST2 (wcsstr,
+                        wchar_t *,
+                        (const wchar_t *restrict, const wchar_t *restrict),
+                        const wchar_t *,
+                        (const wchar_t *restrict, const wchar_t *restrict));
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+_GL_CXXALIASWARN1 (wcsstr, wchar_t *,
+                   (wchar_t *restrict haystack,
+                    const wchar_t *restrict needle));
+_GL_CXXALIASWARN1 (wcsstr, const wchar_t *,
+                   (const wchar_t *restrict haystack,
+                    const wchar_t *restrict needle));
+# elif __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcsstr);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcsstr
+# if HAVE_RAW_DECL_WCSSTR
+_GL_WARN_ON_USE (wcsstr, "wcsstr is unportable - "
+                 "use gnulib module wcsstr for portability");
+# endif
+#endif
+
+
+/* Divide WCS into tokens separated by characters in DELIM.  */
+#if @GNULIB_WCSTOK@
+# if @REPLACE_WCSTOK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef wcstok
+#   define wcstok rpl_wcstok
+#  endif
+_GL_FUNCDECL_RPL (wcstok, wchar_t *,
+                  (wchar_t *restrict wcs, const wchar_t *restrict delim,
+                   wchar_t **restrict ptr));
+_GL_CXXALIAS_RPL (wcstok, wchar_t *,
+                  (wchar_t *restrict wcs, const wchar_t *restrict delim,
+                   wchar_t **restrict ptr));
+# else
+#  if !@HAVE_WCSTOK@
+_GL_FUNCDECL_SYS (wcstok, wchar_t *,
+                  (wchar_t *restrict wcs, const wchar_t *restrict delim,
+                   wchar_t **restrict ptr));
+#  endif
+_GL_CXXALIAS_SYS (wcstok, wchar_t *,
+                  (wchar_t *restrict wcs, const wchar_t *restrict delim,
+                   wchar_t **restrict ptr));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcstok);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcstok
+# if HAVE_RAW_DECL_WCSTOK
+_GL_WARN_ON_USE (wcstok, "wcstok is unportable - "
+                 "use gnulib module wcstok for portability");
+# endif
+#endif
+
+
+/* Determine number of column positions required for first N wide
+   characters (or fewer if S ends before this) in S.  */
+#if @GNULIB_WCSWIDTH@
+# if @REPLACE_WCSWIDTH@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef wcswidth
+#   define wcswidth rpl_wcswidth
+#  endif
+_GL_FUNCDECL_RPL (wcswidth, int, (const wchar_t *s, size_t n)
+                                 _GL_ATTRIBUTE_PURE);
+_GL_CXXALIAS_RPL (wcswidth, int, (const wchar_t *s, size_t n));
+# else
+#  if !@HAVE_WCSWIDTH@
+_GL_FUNCDECL_SYS (wcswidth, int, (const wchar_t *s, size_t n)
+                                 _GL_ATTRIBUTE_PURE);
+#  endif
+_GL_CXXALIAS_SYS (wcswidth, int, (const wchar_t *s, size_t n));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcswidth);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcswidth
+# if HAVE_RAW_DECL_WCSWIDTH
+_GL_WARN_ON_USE (wcswidth, "wcswidth is unportable - "
+                 "use gnulib module wcswidth for portability");
+# endif
+#endif
+
+
+/* Convert *TP to a date and time wide string.  See
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/wcsftime.html>.  */
+#if @GNULIB_WCSFTIME@
+# if @REPLACE_WCSFTIME@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef wcsftime
+#   define wcsftime rpl_wcsftime
+#  endif
+_GL_FUNCDECL_RPL (wcsftime, size_t,
+                  (wchar_t *restrict __buf, size_t __bufsize,
+                   const wchar_t *restrict __fmt,
+                   const struct tm *restrict __tp)
+                  _GL_ARG_NONNULL ((1, 3, 4)));
+_GL_CXXALIAS_RPL (wcsftime, size_t,
+                  (wchar_t *restrict __buf, size_t __bufsize,
+                   const wchar_t *restrict __fmt,
+                   const struct tm *restrict __tp));
+# else
+#  if !@HAVE_WCSFTIME@
+_GL_FUNCDECL_SYS (wcsftime, size_t,
+                  (wchar_t *restrict __buf, size_t __bufsize,
+                   const wchar_t *restrict __fmt,
+                   const struct tm *restrict __tp)
+                  _GL_ARG_NONNULL ((1, 3, 4)));
+#  endif
+_GL_CXXALIAS_SYS (wcsftime, size_t,
+                  (wchar_t *restrict __buf, size_t __bufsize,
+                   const wchar_t *restrict __fmt,
+                   const struct tm *restrict __tp));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wcsftime);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcsftime
+# if HAVE_RAW_DECL_WCSFTIME
+_GL_WARN_ON_USE (wcsftime, "wcsftime is unportable - "
+                 "use gnulib module wcsftime for portability");
+# endif
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_WCHAR_H */
+#endif /* _@GUARD_PREFIX@_WCHAR_H */
+#endif
diff --git a/src/grep/lib/wcrtomb.c b/src/grep/lib/wcrtomb.c
new file mode 100644
index 0000000..5c9fd79
--- /dev/null
+++ b/src/grep/lib/wcrtomb.c
@@ -0,0 +1,80 @@
+/* Convert wide character to multibyte character.
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wchar.h>
+
+#include <errno.h>
+#include <stdlib.h>
+
+
+size_t
+wcrtomb (char *s, wchar_t wc, mbstate_t *ps)
+#undef wcrtomb
+{
+  /* This implementation of wcrtomb supports only stateless encodings.
+     ps must be in the initial state.  */
+  if (ps != NULL && !mbsinit (ps))
+    {
+      errno = EINVAL;
+      return (size_t)(-1);
+    }
+
+#if !HAVE_WCRTOMB                       /* IRIX 6.5 */ \
+    || WCRTOMB_RETVAL_BUG               /* Solaris 11.3, MSVC */ \
+    || WCRTOMB_C_LOCALE_BUG             /* Android */
+  if (s == NULL)
+    /* We know the NUL wide character corresponds to the NUL character.  */
+    return 1;
+  else
+#endif
+    {
+#if HAVE_WCRTOMB
+# if WCRTOMB_C_LOCALE_BUG               /* Android */
+      /* Implement consistently with mbrtowc(): through a 1:1 correspondence,
+         as in ISO-8859-1.  */
+      if (wc >= 0 && wc <= 0xff)
+        {
+          *s = (unsigned char) wc;
+          return 1;
+        }
+      else
+        {
+          errno = EILSEQ;
+          return (size_t)(-1);
+        }
+# else
+      return wcrtomb (s, wc, ps);
+# endif
+#else                                   /* IRIX 6.5 */
+      /* Fallback for platforms that don't have wcrtomb().
+         Implement on top of wctomb().
+         This code is not multithread-safe.  */
+      int ret = wctomb (s, wc);
+
+      if (ret >= 0)
+        return ret;
+      else
+        {
+          errno = EILSEQ;
+          return (size_t)(-1);
+        }
+#endif
+    }
+}
diff --git a/src/grep/lib/wctob.c b/src/grep/lib/wctob.c
new file mode 100644
index 0000000..6f6bed5
--- /dev/null
+++ b/src/grep/lib/wctob.c
@@ -0,0 +1,38 @@
+/* Convert wide character to unibyte character.
+   Copyright (C) 2008, 2010-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wchar.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+wctob (wint_t wc)
+{
+  char buf[64];
+
+  if (!(MB_CUR_MAX <= sizeof (buf)))
+    abort ();
+  /* Handle the case where WEOF is a value that does not fit in a wchar_t.  */
+  if (wc == (wchar_t)wc)
+    if (wctomb (buf, (wchar_t)wc) == 1)
+      return (unsigned char) buf[0];
+  return EOF;
+}
diff --git a/src/grep/lib/wctomb-impl.h b/src/grep/lib/wctomb-impl.h
new file mode 100644
index 0000000..ff8dfe9
--- /dev/null
+++ b/src/grep/lib/wctomb-impl.h
@@ -0,0 +1,34 @@
+/* Convert wide character to multibyte character.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+int
+wctomb (char *s, wchar_t wc)
+{
+  if (s == NULL)
+    return 0;
+  else
+    {
+      mbstate_t state;
+      size_t result;
+
+      memset (&state, 0, sizeof (mbstate_t));
+      result = wcrtomb (s, wc, &state);
+      if (result == (size_t)-1)
+        return -1;
+      return result;
+    }
+}
diff --git a/src/grep/lib/wctomb.c b/src/grep/lib/wctomb.c
new file mode 100644
index 0000000..aaf5cee
--- /dev/null
+++ b/src/grep/lib/wctomb.c
@@ -0,0 +1,25 @@
+/* Convert wide character to multibyte character.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include <string.h>
+#include <wchar.h>
+
+#include "wctomb-impl.h"
diff --git a/src/grep/lib/wctype-h.c b/src/grep/lib/wctype-h.c
new file mode 100644
index 0000000..150221d
--- /dev/null
+++ b/src/grep/lib/wctype-h.c
@@ -0,0 +1,23 @@
+/* Inline functions for <wctype.h>.
+
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Normally this would be wctype.c, but that name's already taken.  */
+
+#include <config.h>
+
+#define _GL_WCTYPE_INLINE _GL_EXTERN_INLINE
+#include "wctype.h"
diff --git a/src/grep/lib/wctype.in.h b/src/grep/lib/wctype.in.h
new file mode 100644
index 0000000..652d811
--- /dev/null
+++ b/src/grep/lib/wctype.in.h
@@ -0,0 +1,732 @@
+/* A substitute for ISO C99 <wctype.h>, for platforms that lack it.
+
+   Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible and Paul Eggert.  */
+
+/*
+ * ISO C 99 <wctype.h> for platforms that lack it.
+ * <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/wctype.h.html>
+ *
+ * iswctype, towctrans, towlower, towupper, wctrans, wctype,
+ * wctrans_t, and wctype_t are not yet implemented.
+ */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if (defined __MINGW32__ && defined __CTYPE_H_SOURCED__)
+
+/* Special invocation convention:
+   - With MinGW 3.22, when <ctype.h> includes <wctype.h>, only some part of
+     <wctype.h> is being processed, which doesn't include the idempotency
+     guard.   */
+
+#@INCLUDE_NEXT@ @NEXT_WCTYPE_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_WCTYPE_H
+
+#if @HAVE_WINT_T@
+/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>.  */
+# include <wchar.h>
+#endif
+
+/* Native Windows (mingw, MSVC) have declarations of towupper, towlower, and
+   isw* functions in <ctype.h>, <wchar.h> as well as in <wctype.h>.  Include
+   <ctype.h>, <wchar.h> in advance to avoid rpl_ prefix being added to the
+   declarations.  */
+#if defined _WIN32 && ! defined __CYGWIN__
+# include <ctype.h>
+# include <wchar.h>
+#endif
+
+/* Include the original <wctype.h> if it exists.
+   BeOS 5 has the functions but no <wctype.h>.  */
+/* The include_next requires a split double-inclusion guard.  */
+#if @HAVE_WCTYPE_H@
+# @INCLUDE_NEXT@ @NEXT_WCTYPE_H@
+#endif
+
+#ifndef _@GUARD_PREFIX@_WCTYPE_H
+#define _@GUARD_PREFIX@_WCTYPE_H
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef _GL_WCTYPE_INLINE
+# define _GL_WCTYPE_INLINE _GL_INLINE
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+/* Solaris 2.6 <wctype.h> includes <widec.h> which includes <euc.h> which
+   #defines a number of identifiers in the application namespace.  Revert
+   these #defines.  */
+#ifdef __sun
+# undef multibyte
+# undef eucw1
+# undef eucw2
+# undef eucw3
+# undef scrw1
+# undef scrw2
+# undef scrw3
+#endif
+
+/* Define wint_t and WEOF.  (Also done in wchar.in.h.)  */
+#if !@HAVE_WINT_T@ && !defined wint_t
+# define wint_t int
+# ifndef WEOF
+#  define WEOF -1
+# endif
+#else
+/* mingw and MSVC define wint_t as 'unsigned short' in <crtdefs.h> or
+   <stddef.h>.  This is too small: ISO C 99 section 7.24.1.(2) says that
+   wint_t must be "unchanged by default argument promotions".  Override it.  */
+# if @GNULIBHEADERS_OVERRIDE_WINT_T@
+#  if !GNULIB_defined_wint_t
+#   if @HAVE_CRTDEFS_H@
+#    include <crtdefs.h>
+#   else
+#    include <stddef.h>
+#   endif
+typedef unsigned int rpl_wint_t;
+#   undef wint_t
+#   define wint_t rpl_wint_t
+#   define GNULIB_defined_wint_t 1
+#  endif
+# endif
+# ifndef WEOF
+#  define WEOF ((wint_t) -1)
+# endif
+#endif
+
+
+#if !GNULIB_defined_wctype_functions
+
+/* FreeBSD 4.4 to 4.11 has <wctype.h> but lacks the functions.
+   Linux libc5 has <wctype.h> and the functions but they are broken.
+   mingw and MSVC have <wctype.h> and the functions but they take a wchar_t
+   as argument, not an rpl_wint_t.
+   Assume all 11 functions (all isw* except iswblank) are implemented the
+   same way, or not at all.  */
+# if ! @HAVE_ISWCNTRL@ || @REPLACE_ISWCNTRL@
+
+#  if @GNULIBHEADERS_OVERRIDE_WINT_T@ /* implies @REPLACE_ISWCNTRL@ */
+
+_GL_WCTYPE_INLINE int
+rpl_iswalnum (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? iswalnum ((wchar_t) wc) : 0);
+}
+
+_GL_WCTYPE_INLINE int
+rpl_iswalpha (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? iswalpha ((wchar_t) wc) : 0);
+}
+
+_GL_WCTYPE_INLINE int
+rpl_iswblank (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? iswblank ((wchar_t) wc) : 0);
+}
+
+_GL_WCTYPE_INLINE int
+rpl_iswcntrl (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? iswcntrl ((wchar_t) wc) : 0);
+}
+
+_GL_WCTYPE_INLINE int
+rpl_iswdigit (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? wc >= '0' && wc <= '9' : 0);
+}
+
+_GL_WCTYPE_INLINE int
+rpl_iswgraph (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? iswgraph ((wchar_t) wc) : 0);
+}
+
+_GL_WCTYPE_INLINE int
+rpl_iswlower (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? iswlower ((wchar_t) wc) : 0);
+}
+
+_GL_WCTYPE_INLINE int
+rpl_iswprint (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? iswprint ((wchar_t) wc) : 0);
+}
+
+_GL_WCTYPE_INLINE int
+rpl_iswpunct (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? iswpunct ((wchar_t) wc) : 0);
+}
+
+_GL_WCTYPE_INLINE int
+rpl_iswspace (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? iswspace ((wchar_t) wc) : 0);
+}
+
+_GL_WCTYPE_INLINE int
+rpl_iswupper (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? iswupper ((wchar_t) wc) : 0);
+}
+
+_GL_WCTYPE_INLINE int
+rpl_iswxdigit (wint_t wc)
+{
+  return ((wchar_t) wc == wc
+          ? (wc >= '0' && wc <= '9')
+            || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F')
+          : 0);
+}
+
+_GL_WCTYPE_INLINE wint_t
+rpl_towlower (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? (wchar_t) towlower ((wchar_t) wc) : wc);
+}
+
+_GL_WCTYPE_INLINE wint_t
+rpl_towupper (wint_t wc)
+{
+  return ((wchar_t) wc == wc ? (wchar_t) towupper ((wchar_t) wc) : wc);
+}
+
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef iswalnum
+#    undef iswalpha
+#    undef iswblank
+#    undef iswcntrl
+#    undef iswdigit
+#    undef iswgraph
+#    undef iswlower
+#    undef iswprint
+#    undef iswpunct
+#    undef iswspace
+#    undef iswupper
+#    undef iswxdigit
+#    undef towlower
+#    undef towupper
+#    define iswalnum rpl_iswalnum
+#    define iswalpha rpl_iswalpha
+#    define iswblank rpl_iswblank
+#    define iswcntrl rpl_iswcntrl
+#    define iswdigit rpl_iswdigit
+#    define iswgraph rpl_iswgraph
+#    define iswlower rpl_iswlower
+#    define iswprint rpl_iswprint
+#    define iswpunct rpl_iswpunct
+#    define iswspace rpl_iswspace
+#    define iswupper rpl_iswupper
+#    define iswxdigit rpl_iswxdigit
+#    define towlower rpl_towlower
+#    define towupper rpl_towupper
+#   endif
+
+#  else
+
+/* IRIX 5.3 has macros but no functions, its isw* macros refer to an
+   undefined variable _ctmp_ and to <ctype.h> macros like _P, and they
+   refer to system functions like _iswctype that are not in the
+   standard C library.  Rather than try to get ancient buggy
+   implementations like this to work, just disable them.  */
+#   undef iswalnum
+#   undef iswalpha
+#   undef iswblank
+#   undef iswcntrl
+#   undef iswdigit
+#   undef iswgraph
+#   undef iswlower
+#   undef iswprint
+#   undef iswpunct
+#   undef iswspace
+#   undef iswupper
+#   undef iswxdigit
+#   undef towlower
+#   undef towupper
+
+/* Linux libc5 has <wctype.h> and the functions but they are broken.  */
+#   if @REPLACE_ISWCNTRL@
+#    if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#     define iswalnum rpl_iswalnum
+#     define iswalpha rpl_iswalpha
+#     define iswblank rpl_iswblank
+#     define iswcntrl rpl_iswcntrl
+#     define iswdigit rpl_iswdigit
+#     define iswgraph rpl_iswgraph
+#     define iswlower rpl_iswlower
+#     define iswprint rpl_iswprint
+#     define iswpunct rpl_iswpunct
+#     define iswspace rpl_iswspace
+#     define iswupper rpl_iswupper
+#     define iswxdigit rpl_iswxdigit
+#    endif
+#   endif
+#   if @REPLACE_TOWLOWER@
+#    if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#     define towlower rpl_towlower
+#     define towupper rpl_towupper
+#    endif
+#   endif
+
+_GL_WCTYPE_INLINE int
+#   if @REPLACE_ISWCNTRL@
+rpl_iswalnum
+#   else
+iswalnum
+#   endif
+         (wint_t wc)
+{
+  return ((wc >= '0' && wc <= '9')
+          || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'));
+}
+
+_GL_WCTYPE_INLINE int
+#   if @REPLACE_ISWCNTRL@
+rpl_iswalpha
+#   else
+iswalpha
+#   endif
+         (wint_t wc)
+{
+  return (wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z';
+}
+
+_GL_WCTYPE_INLINE int
+#   if @REPLACE_ISWCNTRL@
+rpl_iswblank
+#   else
+iswblank
+#   endif
+         (wint_t wc)
+{
+  return wc == ' ' || wc == '\t';
+}
+
+_GL_WCTYPE_INLINE int
+#   if @REPLACE_ISWCNTRL@
+rpl_iswcntrl
+#   else
+iswcntrl
+#   endif
+        (wint_t wc)
+{
+  return (wc & ~0x1f) == 0 || wc == 0x7f;
+}
+
+_GL_WCTYPE_INLINE int
+#   if @REPLACE_ISWDIGIT@
+rpl_iswdigit
+#   else
+iswdigit
+#   endif
+         (wint_t wc)
+{
+  return wc >= '0' && wc <= '9';
+}
+
+_GL_WCTYPE_INLINE int
+#   if @REPLACE_ISWCNTRL@
+rpl_iswgraph
+#   else
+iswgraph
+#   endif
+         (wint_t wc)
+{
+  return wc >= '!' && wc <= '~';
+}
+
+_GL_WCTYPE_INLINE int
+#   if @REPLACE_ISWCNTRL@
+rpl_iswlower
+#   else
+iswlower
+#   endif
+         (wint_t wc)
+{
+  return wc >= 'a' && wc <= 'z';
+}
+
+_GL_WCTYPE_INLINE int
+#   if @REPLACE_ISWCNTRL@
+rpl_iswprint
+#   else
+iswprint
+#   endif
+         (wint_t wc)
+{
+  return wc >= ' ' && wc <= '~';
+}
+
+_GL_WCTYPE_INLINE int
+#   if @REPLACE_ISWCNTRL@
+rpl_iswpunct
+#   else
+iswpunct
+#   endif
+         (wint_t wc)
+{
+  return (wc >= '!' && wc <= '~'
+          && !((wc >= '0' && wc <= '9')
+               || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z')));
+}
+
+_GL_WCTYPE_INLINE int
+#   if @REPLACE_ISWCNTRL@
+rpl_iswspace
+#   else
+iswspace
+#   endif
+         (wint_t wc)
+{
+  return (wc == ' ' || wc == '\t'
+          || wc == '\n' || wc == '\v' || wc == '\f' || wc == '\r');
+}
+
+_GL_WCTYPE_INLINE int
+#   if @REPLACE_ISWCNTRL@
+rpl_iswupper
+#   else
+iswupper
+#   endif
+         (wint_t wc)
+{
+  return wc >= 'A' && wc <= 'Z';
+}
+
+_GL_WCTYPE_INLINE int
+#   if @REPLACE_ISWXDIGIT@
+rpl_iswxdigit
+#   else
+iswxdigit
+#   endif
+          (wint_t wc)
+{
+  return ((wc >= '0' && wc <= '9')
+          || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F'));
+}
+
+_GL_WCTYPE_INLINE wint_t
+#   if @REPLACE_TOWLOWER@
+rpl_towlower
+#   else
+towlower
+#   endif
+         (wint_t wc)
+{
+  return (wc >= 'A' && wc <= 'Z' ? wc - 'A' + 'a' : wc);
+}
+
+_GL_WCTYPE_INLINE wint_t
+#   if @REPLACE_TOWLOWER@
+rpl_towupper
+#   else
+towupper
+#   endif
+         (wint_t wc)
+{
+  return (wc >= 'a' && wc <= 'z' ? wc - 'a' + 'A' : wc);
+}
+
+#  endif
+
+# else
+/* Only some of the functions are missing or broken.  */
+
+#  if @GNULIB_ISWBLANK@ && (! @HAVE_ISWBLANK@ || @REPLACE_ISWBLANK@)
+/* Only the iswblank function is missing.  */
+#   if @REPLACE_ISWBLANK@
+#    if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#     define iswblank rpl_iswblank
+#    endif
+_GL_FUNCDECL_RPL (iswblank, int, (wint_t wc));
+#   else
+_GL_FUNCDECL_SYS (iswblank, int, (wint_t wc));
+#   endif
+#  endif
+
+#  if @GNULIB_ISWDIGIT@
+#   if @REPLACE_ISWDIGIT@
+#    if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#     undef iswdigit
+#     define iswdigit rpl_iswdigit
+#    endif
+_GL_FUNCDECL_RPL (iswdigit, int, (wint_t wc));
+#   endif
+#  endif
+
+#  if @GNULIB_ISWXDIGIT@
+#   if @REPLACE_ISWXDIGIT@
+#    if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#     undef iswxdigit
+#     define iswxdigit rpl_iswxdigit
+#    endif
+_GL_FUNCDECL_RPL (iswxdigit, int, (wint_t wc));
+#   endif
+#  endif
+
+# endif
+
+# if defined __MINGW32__ && !@GNULIBHEADERS_OVERRIDE_WINT_T@
+
+/* On native Windows, wchar_t is uint16_t, and wint_t is uint32_t.
+   The functions towlower and towupper are implemented in the MSVCRT library
+   to take a wchar_t argument and return a wchar_t result.  mingw declares
+   these functions to take a wint_t argument and return a wint_t result.
+   This means that:
+   1. When the user passes an argument outside the range 0x0000..0xFFFF, the
+      function will look only at the lower 16 bits.  This is allowed according
+      to POSIX.
+   2. The return value is returned in the lower 16 bits of the result register.
+      The upper 16 bits are random: whatever happened to be in that part of the
+      result register.  We need to fix this by adding a zero-extend from
+      wchar_t to wint_t after the call.  */
+
+_GL_WCTYPE_INLINE wint_t
+rpl_towlower (wint_t wc)
+{
+  return (wint_t) (wchar_t) towlower (wc);
+}
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define towlower rpl_towlower
+#  endif
+
+_GL_WCTYPE_INLINE wint_t
+rpl_towupper (wint_t wc)
+{
+  return (wint_t) (wchar_t) towupper (wc);
+}
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define towupper rpl_towupper
+#  endif
+
+# endif /* __MINGW32__ && !@GNULIBHEADERS_OVERRIDE_WINT_T@ */
+
+# define GNULIB_defined_wctype_functions 1
+#endif
+
+#if @REPLACE_ISWCNTRL@
+_GL_CXXALIAS_RPL (iswalnum, int, (wint_t wc));
+#else
+_GL_CXXALIAS_SYS (iswalnum, int, (wint_t wc));
+#endif
+#if @REPLACE_ISWCNTRL@
+_GL_CXXALIAS_RPL (iswalpha, int, (wint_t wc));
+#else
+_GL_CXXALIAS_SYS (iswalpha, int, (wint_t wc));
+#endif
+#if @REPLACE_ISWCNTRL@
+_GL_CXXALIAS_RPL (iswcntrl, int, (wint_t wc));
+#else
+_GL_CXXALIAS_SYS (iswcntrl, int, (wint_t wc));
+#endif
+#if @GNULIB_ISWDIGIT@
+# if @REPLACE_ISWDIGIT@
+_GL_CXXALIAS_RPL (iswdigit, int, (wint_t wc));
+# else
+_GL_CXXALIAS_SYS (iswdigit, int, (wint_t wc));
+# endif
+#endif
+#if @REPLACE_ISWCNTRL@
+_GL_CXXALIAS_RPL (iswgraph, int, (wint_t wc));
+#else
+_GL_CXXALIAS_SYS (iswgraph, int, (wint_t wc));
+#endif
+#if @REPLACE_ISWCNTRL@
+_GL_CXXALIAS_RPL (iswlower, int, (wint_t wc));
+#else
+_GL_CXXALIAS_SYS (iswlower, int, (wint_t wc));
+#endif
+#if @REPLACE_ISWCNTRL@
+_GL_CXXALIAS_RPL (iswprint, int, (wint_t wc));
+#else
+_GL_CXXALIAS_SYS (iswprint, int, (wint_t wc));
+#endif
+#if @REPLACE_ISWCNTRL@
+_GL_CXXALIAS_RPL (iswpunct, int, (wint_t wc));
+#else
+_GL_CXXALIAS_SYS (iswpunct, int, (wint_t wc));
+#endif
+#if @REPLACE_ISWCNTRL@
+_GL_CXXALIAS_RPL (iswspace, int, (wint_t wc));
+#else
+_GL_CXXALIAS_SYS (iswspace, int, (wint_t wc));
+#endif
+#if @REPLACE_ISWCNTRL@
+_GL_CXXALIAS_RPL (iswupper, int, (wint_t wc));
+#else
+_GL_CXXALIAS_SYS (iswupper, int, (wint_t wc));
+#endif
+#if @GNULIB_ISWXDIGIT@
+# if @REPLACE_ISWXDIGIT@
+_GL_CXXALIAS_RPL (iswxdigit, int, (wint_t wc));
+# else
+_GL_CXXALIAS_SYS (iswxdigit, int, (wint_t wc));
+# endif
+#endif
+#if __GLIBC__ >= 2
+_GL_CXXALIASWARN (iswalnum);
+_GL_CXXALIASWARN (iswalpha);
+_GL_CXXALIASWARN (iswcntrl);
+_GL_CXXALIASWARN (iswdigit);
+_GL_CXXALIASWARN (iswgraph);
+_GL_CXXALIASWARN (iswlower);
+_GL_CXXALIASWARN (iswprint);
+_GL_CXXALIASWARN (iswpunct);
+_GL_CXXALIASWARN (iswspace);
+_GL_CXXALIASWARN (iswupper);
+_GL_CXXALIASWARN (iswxdigit);
+#endif
+
+#if @GNULIB_ISWBLANK@
+# if @REPLACE_ISWCNTRL@ || @REPLACE_ISWBLANK@
+_GL_CXXALIAS_RPL (iswblank, int, (wint_t wc));
+# else
+_GL_CXXALIAS_SYS (iswblank, int, (wint_t wc));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (iswblank);
+# endif
+#endif
+
+#if !@HAVE_WCTYPE_T@
+# if !GNULIB_defined_wctype_t
+typedef void * wctype_t;
+#  define GNULIB_defined_wctype_t 1
+# endif
+#endif
+
+/* Get a descriptor for a wide character property.  */
+#if @GNULIB_WCTYPE@
+# if !@HAVE_WCTYPE_T@
+_GL_FUNCDECL_SYS (wctype, wctype_t, (const char *name));
+# endif
+_GL_CXXALIAS_SYS (wctype, wctype_t, (const char *name));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wctype);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wctype
+# if HAVE_RAW_DECL_WCTYPE
+_GL_WARN_ON_USE (wctype, "wctype is unportable - "
+                 "use gnulib module wctype for portability");
+# endif
+#endif
+
+/* Test whether a wide character has a given property.
+   The argument WC must be either a wchar_t value or WEOF.
+   The argument DESC must have been returned by the wctype() function.  */
+#if @GNULIB_ISWCTYPE@
+# if @GNULIBHEADERS_OVERRIDE_WINT_T@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef iswctype
+#   define iswctype rpl_iswctype
+#  endif
+_GL_FUNCDECL_RPL (iswctype, int, (wint_t wc, wctype_t desc));
+_GL_CXXALIAS_RPL (iswctype, int, (wint_t wc, wctype_t desc));
+# else
+#  if !@HAVE_WCTYPE_T@
+_GL_FUNCDECL_SYS (iswctype, int, (wint_t wc, wctype_t desc));
+#  endif
+_GL_CXXALIAS_SYS (iswctype, int, (wint_t wc, wctype_t desc));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (iswctype);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef iswctype
+# if HAVE_RAW_DECL_ISWCTYPE
+_GL_WARN_ON_USE (iswctype, "iswctype is unportable - "
+                 "use gnulib module iswctype for portability");
+# endif
+#endif
+
+#if @REPLACE_TOWLOWER@ || defined __MINGW32__
+_GL_CXXALIAS_RPL (towlower, wint_t, (wint_t wc));
+_GL_CXXALIAS_RPL (towupper, wint_t, (wint_t wc));
+#else
+_GL_CXXALIAS_SYS (towlower, wint_t, (wint_t wc));
+_GL_CXXALIAS_SYS (towupper, wint_t, (wint_t wc));
+#endif
+#if __GLIBC__ >= 2
+_GL_CXXALIASWARN (towlower);
+_GL_CXXALIASWARN (towupper);
+#endif
+
+#if !@HAVE_WCTRANS_T@
+# if !GNULIB_defined_wctrans_t
+typedef void * wctrans_t;
+#  define GNULIB_defined_wctrans_t 1
+# endif
+#endif
+
+/* Get a descriptor for a wide character case conversion.  */
+#if @GNULIB_WCTRANS@
+# if !@HAVE_WCTRANS_T@
+_GL_FUNCDECL_SYS (wctrans, wctrans_t, (const char *name));
+# endif
+_GL_CXXALIAS_SYS (wctrans, wctrans_t, (const char *name));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (wctrans);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wctrans
+# if HAVE_RAW_DECL_WCTRANS
+_GL_WARN_ON_USE (wctrans, "wctrans is unportable - "
+                 "use gnulib module wctrans for portability");
+# endif
+#endif
+
+/* Perform a given case conversion on a wide character.
+   The argument WC must be either a wchar_t value or WEOF.
+   The argument DESC must have been returned by the wctrans() function.  */
+#if @GNULIB_TOWCTRANS@
+# if !@HAVE_WCTRANS_T@
+_GL_FUNCDECL_SYS (towctrans, wint_t, (wint_t wc, wctrans_t desc));
+# endif
+_GL_CXXALIAS_SYS (towctrans, wint_t, (wint_t wc, wctrans_t desc));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (towctrans);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef towctrans
+# if HAVE_RAW_DECL_TOWCTRANS
+_GL_WARN_ON_USE (towctrans, "towctrans is unportable - "
+                 "use gnulib module towctrans for portability");
+# endif
+#endif
+
+_GL_INLINE_HEADER_END
+
+#endif /* _@GUARD_PREFIX@_WCTYPE_H */
+#endif /* _@GUARD_PREFIX@_WCTYPE_H */
+#endif
diff --git a/src/grep/lib/wcwidth.c b/src/grep/lib/wcwidth.c
new file mode 100644
index 0000000..7f11211
--- /dev/null
+++ b/src/grep/lib/wcwidth.c
@@ -0,0 +1,73 @@
+/* Determine the number of screen columns needed for a character.
+   Copyright (C) 2006-2007, 2010-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wchar.h>
+
+/* Get iswprint.  */
+#include <wctype.h>
+
+#include "localcharset.h"
+#include "streq.h"
+#include "uniwidth.h"
+
+/* Returns 1 if the current locale is an UTF-8 locale, 0 otherwise.  */
+static inline int
+is_locale_utf8 (void)
+{
+  const char *encoding = locale_charset ();
+  return STREQ_OPT (encoding, "UTF-8", 'U', 'T', 'F', '-', '8', 0, 0, 0, 0);
+}
+
+#if GNULIB_WCHAR_SINGLE_LOCALE
+/* When we know that the locale does not change, provide a speedup by
+   caching the value of is_locale_utf8.  */
+static int cached_is_locale_utf8 = -1;
+static inline int
+is_locale_utf8_cached (void)
+{
+  if (cached_is_locale_utf8 < 0)
+    cached_is_locale_utf8 = is_locale_utf8 ();
+  return cached_is_locale_utf8;
+}
+#else
+/* By default, don't make assumptions, hence no caching.  */
+# define is_locale_utf8_cached is_locale_utf8
+#endif
+
+int
+wcwidth (wchar_t wc)
+#undef wcwidth
+{
+  /* In UTF-8 locales, use a Unicode aware width function.  */
+  if (is_locale_utf8_cached ())
+    {
+      /* We assume that in a UTF-8 locale, a wide character is the same as a
+         Unicode character.  */
+      return uc_width (wc, "UTF-8");
+    }
+  else
+    {
+      /* Otherwise, fall back to the system's wcwidth function.  */
+#if HAVE_WCWIDTH
+      return wcwidth (wc);
+#else
+      return wc == 0 ? 0 : iswprint (wc) ? 1 : -1;
+#endif
+    }
+}
diff --git a/src/grep/lib/windows-initguard.h b/src/grep/lib/windows-initguard.h
new file mode 100644
index 0000000..7999b23
--- /dev/null
+++ b/src/grep/lib/windows-initguard.h
@@ -0,0 +1,35 @@
+/* Init guards, somewhat like spinlocks (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-win32.h.  */
+
+#ifndef _WINDOWS_INITGUARD_H
+#define _WINDOWS_INITGUARD_H
+
+#define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#include <windows.h>
+
+typedef struct
+        {
+          volatile int done;
+          volatile LONG started;
+        }
+        glwthread_initguard_t;
+
+#define GLWTHREAD_INITGUARD_INIT { 0, -1 }
+
+#endif /* _WINDOWS_INITGUARD_H */
diff --git a/src/grep/lib/windows-mutex.c b/src/grep/lib/windows-mutex.c
new file mode 100644
index 0000000..2edfeaa
--- /dev/null
+++ b/src/grep/lib/windows-mutex.c
@@ -0,0 +1,95 @@
+/* Plain mutexes (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-win32.h.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "windows-mutex.h"
+
+#include <errno.h>
+
+void
+glwthread_mutex_init (glwthread_mutex_t *mutex)
+{
+  InitializeCriticalSection (&mutex->lock);
+  mutex->guard.done = 1;
+}
+
+int
+glwthread_mutex_lock (glwthread_mutex_t *mutex)
+{
+  if (!mutex->guard.done)
+    {
+      if (InterlockedIncrement (&mutex->guard.started) == 0)
+        /* This thread is the first one to need this mutex.  Initialize it.  */
+        glwthread_mutex_init (mutex);
+      else
+        {
+          /* Don't let mutex->guard.started grow and wrap around.  */
+          InterlockedDecrement (&mutex->guard.started);
+          /* Yield the CPU while waiting for another thread to finish
+             initializing this mutex.  */
+          while (!mutex->guard.done)
+            Sleep (0);
+        }
+    }
+  EnterCriticalSection (&mutex->lock);
+  return 0;
+}
+
+int
+glwthread_mutex_trylock (glwthread_mutex_t *mutex)
+{
+  if (!mutex->guard.done)
+    {
+      if (InterlockedIncrement (&mutex->guard.started) == 0)
+        /* This thread is the first one to need this mutex.  Initialize it.  */
+        glwthread_mutex_init (mutex);
+      else
+        {
+          /* Don't let mutex->guard.started grow and wrap around.  */
+          InterlockedDecrement (&mutex->guard.started);
+          /* Let another thread finish initializing this mutex, and let it also
+             lock this mutex.  */
+          return EBUSY;
+        }
+    }
+  if (!TryEnterCriticalSection (&mutex->lock))
+    return EBUSY;
+  return 0;
+}
+
+int
+glwthread_mutex_unlock (glwthread_mutex_t *mutex)
+{
+  if (!mutex->guard.done)
+    return EINVAL;
+  LeaveCriticalSection (&mutex->lock);
+  return 0;
+}
+
+int
+glwthread_mutex_destroy (glwthread_mutex_t *mutex)
+{
+  if (!mutex->guard.done)
+    return EINVAL;
+  DeleteCriticalSection (&mutex->lock);
+  mutex->guard.done = 0;
+  return 0;
+}
diff --git a/src/grep/lib/windows-mutex.h b/src/grep/lib/windows-mutex.h
new file mode 100644
index 0000000..5ecf9f8
--- /dev/null
+++ b/src/grep/lib/windows-mutex.h
@@ -0,0 +1,51 @@
+/* Plain mutexes (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-win32.h.  */
+
+#ifndef _WINDOWS_MUTEX_H
+#define _WINDOWS_MUTEX_H
+
+#define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#include <windows.h>
+
+#include "windows-initguard.h"
+
+typedef struct
+        {
+          glwthread_initguard_t guard; /* protects the initialization */
+          CRITICAL_SECTION lock;
+        }
+        glwthread_mutex_t;
+
+#define GLWTHREAD_MUTEX_INIT { GLWTHREAD_INITGUARD_INIT }
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern void glwthread_mutex_init (glwthread_mutex_t *mutex);
+extern int glwthread_mutex_lock (glwthread_mutex_t *mutex);
+extern int glwthread_mutex_trylock (glwthread_mutex_t *mutex);
+extern int glwthread_mutex_unlock (glwthread_mutex_t *mutex);
+extern int glwthread_mutex_destroy (glwthread_mutex_t *mutex);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _WINDOWS_MUTEX_H */
diff --git a/src/grep/lib/windows-once.c b/src/grep/lib/windows-once.c
new file mode 100644
index 0000000..8dcd37c
--- /dev/null
+++ b/src/grep/lib/windows-once.c
@@ -0,0 +1,62 @@
+/* Once-only control (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-win32.h.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "windows-once.h"
+
+#include <stdlib.h>
+
+void
+glwthread_once (glwthread_once_t *once_control, void (*initfunction) (void))
+{
+  if (once_control->inited <= 0)
+    {
+      if (InterlockedIncrement (&once_control->started) == 0)
+        {
+          /* This thread is the first one to come to this once_control.  */
+          InitializeCriticalSection (&once_control->lock);
+          EnterCriticalSection (&once_control->lock);
+          once_control->inited = 0;
+          initfunction ();
+          once_control->inited = 1;
+          LeaveCriticalSection (&once_control->lock);
+        }
+      else
+        {
+          /* Don't let once_control->started grow and wrap around.  */
+          InterlockedDecrement (&once_control->started);
+          /* Some other thread has already started the initialization.
+             Yield the CPU while waiting for the other thread to finish
+             initializing and taking the lock.  */
+          while (once_control->inited < 0)
+            Sleep (0);
+          if (once_control->inited <= 0)
+            {
+              /* Take the lock.  This blocks until the other thread has
+                 finished calling the initfunction.  */
+              EnterCriticalSection (&once_control->lock);
+              LeaveCriticalSection (&once_control->lock);
+              if (!(once_control->inited > 0))
+                abort ();
+            }
+        }
+    }
+}
diff --git a/src/grep/lib/windows-once.h b/src/grep/lib/windows-once.h
new file mode 100644
index 0000000..58632f9
--- /dev/null
+++ b/src/grep/lib/windows-once.h
@@ -0,0 +1,47 @@
+/* Once-only control (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-win32.h.  */
+
+#ifndef _WINDOWS_ONCE_H
+#define _WINDOWS_ONCE_H
+
+#define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#include <windows.h>
+
+typedef struct
+        {
+          volatile int inited;
+          volatile LONG started;
+          CRITICAL_SECTION lock;
+        }
+        glwthread_once_t;
+
+#define GLWTHREAD_ONCE_INIT { -1, -1 }
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern void glwthread_once (glwthread_once_t *once_control,
+                            void (*initfunction) (void));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _WINDOWS_ONCE_H */
diff --git a/src/grep/lib/windows-recmutex.c b/src/grep/lib/windows-recmutex.c
new file mode 100644
index 0000000..cfc94b4
--- /dev/null
+++ b/src/grep/lib/windows-recmutex.c
@@ -0,0 +1,127 @@
+/* Plain recursive mutexes (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-win32.h.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "windows-recmutex.h"
+
+#include <errno.h>
+
+void
+glwthread_recmutex_init (glwthread_recmutex_t *mutex)
+{
+  mutex->owner = 0;
+  mutex->depth = 0;
+  InitializeCriticalSection (&mutex->lock);
+  mutex->guard.done = 1;
+}
+
+int
+glwthread_recmutex_lock (glwthread_recmutex_t *mutex)
+{
+  if (!mutex->guard.done)
+    {
+      if (InterlockedIncrement (&mutex->guard.started) == 0)
+        /* This thread is the first one to need this mutex.  Initialize it.  */
+        glwthread_recmutex_init (mutex);
+      else
+        {
+          /* Don't let mutex->guard.started grow and wrap around.  */
+          InterlockedDecrement (&mutex->guard.started);
+          /* Yield the CPU while waiting for another thread to finish
+             initializing this mutex.  */
+          while (!mutex->guard.done)
+            Sleep (0);
+        }
+    }
+  {
+    DWORD self = GetCurrentThreadId ();
+    if (mutex->owner != self)
+      {
+        EnterCriticalSection (&mutex->lock);
+        mutex->owner = self;
+      }
+    if (++(mutex->depth) == 0) /* wraparound? */
+      {
+        mutex->depth--;
+        return EAGAIN;
+      }
+  }
+  return 0;
+}
+
+int
+glwthread_recmutex_trylock (glwthread_recmutex_t *mutex)
+{
+  if (!mutex->guard.done)
+    {
+      if (InterlockedIncrement (&mutex->guard.started) == 0)
+        /* This thread is the first one to need this mutex.  Initialize it.  */
+        glwthread_recmutex_init (mutex);
+      else
+        {
+          /* Don't let mutex->guard.started grow and wrap around.  */
+          InterlockedDecrement (&mutex->guard.started);
+          /* Let another thread finish initializing this mutex, and let it also
+             lock this mutex.  */
+          return EBUSY;
+        }
+    }
+  {
+    DWORD self = GetCurrentThreadId ();
+    if (mutex->owner != self)
+      {
+        if (!TryEnterCriticalSection (&mutex->lock))
+          return EBUSY;
+        mutex->owner = self;
+      }
+    if (++(mutex->depth) == 0) /* wraparound? */
+      {
+        mutex->depth--;
+        return EAGAIN;
+      }
+  }
+  return 0;
+}
+
+int
+glwthread_recmutex_unlock (glwthread_recmutex_t *mutex)
+{
+  if (mutex->owner != GetCurrentThreadId ())
+    return EPERM;
+  if (mutex->depth == 0)
+    return EINVAL;
+  if (--(mutex->depth) == 0)
+    {
+      mutex->owner = 0;
+      LeaveCriticalSection (&mutex->lock);
+    }
+  return 0;
+}
+
+int
+glwthread_recmutex_destroy (glwthread_recmutex_t *mutex)
+{
+  if (mutex->owner != 0)
+    return EBUSY;
+  DeleteCriticalSection (&mutex->lock);
+  mutex->guard.done = 0;
+  return 0;
+}
diff --git a/src/grep/lib/windows-recmutex.h b/src/grep/lib/windows-recmutex.h
new file mode 100644
index 0000000..174fe73
--- /dev/null
+++ b/src/grep/lib/windows-recmutex.h
@@ -0,0 +1,57 @@
+/* Plain recursive mutexes (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-win32.h.  */
+
+#ifndef _WINDOWS_RECMUTEX_H
+#define _WINDOWS_RECMUTEX_H
+
+#define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#include <windows.h>
+
+#include "windows-initguard.h"
+
+/* The native Windows documentation says that CRITICAL_SECTION already
+   implements a recursive lock.  But we need not rely on it: It's easy to
+   implement a recursive lock without this assumption.  */
+
+typedef struct
+        {
+          glwthread_initguard_t guard; /* protects the initialization */
+          DWORD owner;
+          unsigned long depth;
+          CRITICAL_SECTION lock;
+        }
+        glwthread_recmutex_t;
+
+#define GLWTHREAD_RECMUTEX_INIT { GLWTHREAD_INITGUARD_INIT, 0, 0 }
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern void glwthread_recmutex_init (glwthread_recmutex_t *mutex);
+extern int glwthread_recmutex_lock (glwthread_recmutex_t *mutex);
+extern int glwthread_recmutex_trylock (glwthread_recmutex_t *mutex);
+extern int glwthread_recmutex_unlock (glwthread_recmutex_t *mutex);
+extern int glwthread_recmutex_destroy (glwthread_recmutex_t *mutex);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _WINDOWS_RECMUTEX_H */
diff --git a/src/grep/lib/windows-rwlock.c b/src/grep/lib/windows-rwlock.c
new file mode 100644
index 0000000..d63936c
--- /dev/null
+++ b/src/grep/lib/windows-rwlock.c
@@ -0,0 +1,377 @@
+/* Read-write locks (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-win32.h.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "windows-rwlock.h"
+
+#include <errno.h>
+#include <stdlib.h>
+
+/* Don't assume that UNICODE is not defined.  */
+#undef CreateEvent
+#define CreateEvent CreateEventA
+
+/* In this file, the waitqueues are implemented as circular arrays.  */
+#define glwthread_waitqueue_t glwthread_carray_waitqueue_t
+
+static void
+glwthread_waitqueue_init (glwthread_waitqueue_t *wq)
+{
+  wq->array = NULL;
+  wq->count = 0;
+  wq->alloc = 0;
+  wq->offset = 0;
+}
+
+/* Enqueues the current thread, represented by an event, in a wait queue.
+   Returns INVALID_HANDLE_VALUE if an allocation failure occurs.  */
+static HANDLE
+glwthread_waitqueue_add (glwthread_waitqueue_t *wq)
+{
+  HANDLE event;
+  unsigned int index;
+
+  if (wq->count == wq->alloc)
+    {
+      unsigned int new_alloc = 2 * wq->alloc + 1;
+      HANDLE *new_array =
+        (HANDLE *) realloc (wq->array, new_alloc * sizeof (HANDLE));
+      if (new_array == NULL)
+        /* No more memory.  */
+        return INVALID_HANDLE_VALUE;
+      /* Now is a good opportunity to rotate the array so that its contents
+         starts at offset 0.  */
+      if (wq->offset > 0)
+        {
+          unsigned int old_count = wq->count;
+          unsigned int old_alloc = wq->alloc;
+          unsigned int old_offset = wq->offset;
+          unsigned int i;
+          if (old_offset + old_count > old_alloc)
+            {
+              unsigned int limit = old_offset + old_count - old_alloc;
+              for (i = 0; i < limit; i++)
+                new_array[old_alloc + i] = new_array[i];
+            }
+          for (i = 0; i < old_count; i++)
+            new_array[i] = new_array[old_offset + i];
+          wq->offset = 0;
+        }
+      wq->array = new_array;
+      wq->alloc = new_alloc;
+    }
+  /* Whether the created event is a manual-reset one or an auto-reset one,
+     does not matter, since we will wait on it only once.  */
+  event = CreateEvent (NULL, TRUE, FALSE, NULL);
+  if (event == INVALID_HANDLE_VALUE)
+    /* No way to allocate an event.  */
+    return INVALID_HANDLE_VALUE;
+  index = wq->offset + wq->count;
+  if (index >= wq->alloc)
+    index -= wq->alloc;
+  wq->array[index] = event;
+  wq->count++;
+  return event;
+}
+
+/* Notifies the first thread from a wait queue and dequeues it.  */
+static void
+glwthread_waitqueue_notify_first (glwthread_waitqueue_t *wq)
+{
+  SetEvent (wq->array[wq->offset + 0]);
+  wq->offset++;
+  wq->count--;
+  if (wq->count == 0 || wq->offset == wq->alloc)
+    wq->offset = 0;
+}
+
+/* Notifies all threads from a wait queue and dequeues them all.  */
+static void
+glwthread_waitqueue_notify_all (glwthread_waitqueue_t *wq)
+{
+  unsigned int i;
+
+  for (i = 0; i < wq->count; i++)
+    {
+      unsigned int index = wq->offset + i;
+      if (index >= wq->alloc)
+        index -= wq->alloc;
+      SetEvent (wq->array[index]);
+    }
+  wq->count = 0;
+  wq->offset = 0;
+}
+
+void
+glwthread_rwlock_init (glwthread_rwlock_t *lock)
+{
+  InitializeCriticalSection (&lock->lock);
+  glwthread_waitqueue_init (&lock->waiting_readers);
+  glwthread_waitqueue_init (&lock->waiting_writers);
+  lock->runcount = 0;
+  lock->guard.done = 1;
+}
+
+int
+glwthread_rwlock_rdlock (glwthread_rwlock_t *lock)
+{
+  if (!lock->guard.done)
+    {
+      if (InterlockedIncrement (&lock->guard.started) == 0)
+        /* This thread is the first one to need this lock.  Initialize it.  */
+        glwthread_rwlock_init (lock);
+      else
+        {
+          /* Don't let lock->guard.started grow and wrap around.  */
+          InterlockedDecrement (&lock->guard.started);
+          /* Yield the CPU while waiting for another thread to finish
+             initializing this lock.  */
+          while (!lock->guard.done)
+            Sleep (0);
+        }
+    }
+  EnterCriticalSection (&lock->lock);
+  /* Test whether only readers are currently running, and whether the runcount
+     field will not overflow, and whether no writer is waiting.  The latter
+     condition is because POSIX recommends that "write locks shall take
+     precedence over read locks", to avoid "writer starvation".  */
+  if (!(lock->runcount + 1 > 0 && lock->waiting_writers.count == 0))
+    {
+      /* This thread has to wait for a while.  Enqueue it among the
+         waiting_readers.  */
+      HANDLE event = glwthread_waitqueue_add (&lock->waiting_readers);
+      if (event != INVALID_HANDLE_VALUE)
+        {
+          DWORD result;
+          LeaveCriticalSection (&lock->lock);
+          /* Wait until another thread signals this event.  */
+          result = WaitForSingleObject (event, INFINITE);
+          if (result == WAIT_FAILED || result == WAIT_TIMEOUT)
+            abort ();
+          CloseHandle (event);
+          /* The thread which signalled the event already did the bookkeeping:
+             removed us from the waiting_readers, incremented lock->runcount.  */
+          if (!(lock->runcount > 0))
+            abort ();
+          return 0;
+        }
+      else
+        {
+          /* Allocation failure.  Weird.  */
+          do
+            {
+              LeaveCriticalSection (&lock->lock);
+              Sleep (1);
+              EnterCriticalSection (&lock->lock);
+            }
+          while (!(lock->runcount + 1 > 0));
+        }
+    }
+  lock->runcount++;
+  LeaveCriticalSection (&lock->lock);
+  return 0;
+}
+
+int
+glwthread_rwlock_wrlock (glwthread_rwlock_t *lock)
+{
+  if (!lock->guard.done)
+    {
+      if (InterlockedIncrement (&lock->guard.started) == 0)
+        /* This thread is the first one to need this lock.  Initialize it.  */
+        glwthread_rwlock_init (lock);
+      else
+        {
+          /* Don't let lock->guard.started grow and wrap around.  */
+          InterlockedDecrement (&lock->guard.started);
+          /* Yield the CPU while waiting for another thread to finish
+             initializing this lock.  */
+          while (!lock->guard.done)
+            Sleep (0);
+        }
+    }
+  EnterCriticalSection (&lock->lock);
+  /* Test whether no readers or writers are currently running.  */
+  if (!(lock->runcount == 0))
+    {
+      /* This thread has to wait for a while.  Enqueue it among the
+         waiting_writers.  */
+      HANDLE event = glwthread_waitqueue_add (&lock->waiting_writers);
+      if (event != INVALID_HANDLE_VALUE)
+        {
+          DWORD result;
+          LeaveCriticalSection (&lock->lock);
+          /* Wait until another thread signals this event.  */
+          result = WaitForSingleObject (event, INFINITE);
+          if (result == WAIT_FAILED || result == WAIT_TIMEOUT)
+            abort ();
+          CloseHandle (event);
+          /* The thread which signalled the event already did the bookkeeping:
+             removed us from the waiting_writers, set lock->runcount = -1.  */
+          if (!(lock->runcount == -1))
+            abort ();
+          return 0;
+        }
+      else
+        {
+          /* Allocation failure.  Weird.  */
+          do
+            {
+              LeaveCriticalSection (&lock->lock);
+              Sleep (1);
+              EnterCriticalSection (&lock->lock);
+            }
+          while (!(lock->runcount == 0));
+        }
+    }
+  lock->runcount--; /* runcount becomes -1 */
+  LeaveCriticalSection (&lock->lock);
+  return 0;
+}
+
+int
+glwthread_rwlock_tryrdlock (glwthread_rwlock_t *lock)
+{
+  if (!lock->guard.done)
+    {
+      if (InterlockedIncrement (&lock->guard.started) == 0)
+        /* This thread is the first one to need this lock.  Initialize it.  */
+        glwthread_rwlock_init (lock);
+      else
+        {
+          /* Don't let lock->guard.started grow and wrap around.  */
+          InterlockedDecrement (&lock->guard.started);
+          /* Yield the CPU while waiting for another thread to finish
+             initializing this lock.  */
+          while (!lock->guard.done)
+            Sleep (0);
+        }
+    }
+  /* It's OK to wait for this critical section, because it is never taken for a
+     long time.  */
+  EnterCriticalSection (&lock->lock);
+  /* Test whether only readers are currently running, and whether the runcount
+     field will not overflow, and whether no writer is waiting.  The latter
+     condition is because POSIX recommends that "write locks shall take
+     precedence over read locks", to avoid "writer starvation".  */
+  if (!(lock->runcount + 1 > 0 && lock->waiting_writers.count == 0))
+    {
+      /* This thread would have to wait for a while.  Return instead.  */
+      LeaveCriticalSection (&lock->lock);
+      return EBUSY;
+    }
+  lock->runcount++;
+  LeaveCriticalSection (&lock->lock);
+  return 0;
+}
+
+int
+glwthread_rwlock_trywrlock (glwthread_rwlock_t *lock)
+{
+  if (!lock->guard.done)
+    {
+      if (InterlockedIncrement (&lock->guard.started) == 0)
+        /* This thread is the first one to need this lock.  Initialize it.  */
+        glwthread_rwlock_init (lock);
+      else
+        {
+          /* Don't let lock->guard.started grow and wrap around.  */
+          InterlockedDecrement (&lock->guard.started);
+          /* Yield the CPU while waiting for another thread to finish
+             initializing this lock.  */
+          while (!lock->guard.done)
+            Sleep (0);
+        }
+    }
+  /* It's OK to wait for this critical section, because it is never taken for a
+     long time.  */
+  EnterCriticalSection (&lock->lock);
+  /* Test whether no readers or writers are currently running.  */
+  if (!(lock->runcount == 0))
+    {
+      /* This thread would have to wait for a while.  Return instead.  */
+      LeaveCriticalSection (&lock->lock);
+      return EBUSY;
+    }
+  lock->runcount--; /* runcount becomes -1 */
+  LeaveCriticalSection (&lock->lock);
+  return 0;
+}
+
+int
+glwthread_rwlock_unlock (glwthread_rwlock_t *lock)
+{
+  if (!lock->guard.done)
+    return EINVAL;
+  EnterCriticalSection (&lock->lock);
+  if (lock->runcount < 0)
+    {
+      /* Drop a writer lock.  */
+      if (!(lock->runcount == -1))
+        abort ();
+      lock->runcount = 0;
+    }
+  else
+    {
+      /* Drop a reader lock.  */
+      if (!(lock->runcount > 0))
+        {
+          LeaveCriticalSection (&lock->lock);
+          return EPERM;
+        }
+      lock->runcount--;
+    }
+  if (lock->runcount == 0)
+    {
+      /* POSIX recommends that "write locks shall take precedence over read
+         locks", to avoid "writer starvation".  */
+      if (lock->waiting_writers.count > 0)
+        {
+          /* Wake up one of the waiting writers.  */
+          lock->runcount--;
+          glwthread_waitqueue_notify_first (&lock->waiting_writers);
+        }
+      else
+        {
+          /* Wake up all waiting readers.  */
+          lock->runcount += lock->waiting_readers.count;
+          glwthread_waitqueue_notify_all (&lock->waiting_readers);
+        }
+    }
+  LeaveCriticalSection (&lock->lock);
+  return 0;
+}
+
+int
+glwthread_rwlock_destroy (glwthread_rwlock_t *lock)
+{
+  if (!lock->guard.done)
+    return EINVAL;
+  if (lock->runcount != 0)
+    return EBUSY;
+  DeleteCriticalSection (&lock->lock);
+  if (lock->waiting_readers.array != NULL)
+    free (lock->waiting_readers.array);
+  if (lock->waiting_writers.array != NULL)
+    free (lock->waiting_writers.array);
+  lock->guard.done = 0;
+  return 0;
+}
diff --git a/src/grep/lib/windows-rwlock.h b/src/grep/lib/windows-rwlock.h
new file mode 100644
index 0000000..280c9f2
--- /dev/null
+++ b/src/grep/lib/windows-rwlock.h
@@ -0,0 +1,68 @@
+/* Read-write locks (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-win32.h.  */
+
+#ifndef _WINDOWS_RWLOCK_H
+#define _WINDOWS_RWLOCK_H
+
+#define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#include <windows.h>
+
+#include "windows-initguard.h"
+
+/* It is impossible to implement read-write locks using plain locks, without
+   introducing an extra thread dedicated to managing read-write locks.
+   Therefore here we need to use the low-level Event type.  */
+
+typedef struct
+        {
+          HANDLE *array; /* array of waiting threads, each represented by an event */
+          unsigned int count; /* number of waiting threads */
+          unsigned int alloc; /* length of allocated array */
+          unsigned int offset; /* index of first waiting thread in array */
+        }
+        glwthread_carray_waitqueue_t;
+typedef struct
+        {
+          glwthread_initguard_t guard; /* protects the initialization */
+          CRITICAL_SECTION lock; /* protects the remaining fields */
+          glwthread_carray_waitqueue_t waiting_readers; /* waiting readers */
+          glwthread_carray_waitqueue_t waiting_writers; /* waiting writers */
+          int runcount; /* number of readers running, or -1 when a writer runs */
+        }
+        glwthread_rwlock_t;
+
+#define GLWTHREAD_RWLOCK_INIT { GLWTHREAD_INITGUARD_INIT }
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern void glwthread_rwlock_init (glwthread_rwlock_t *lock);
+extern int glwthread_rwlock_rdlock (glwthread_rwlock_t *lock);
+extern int glwthread_rwlock_wrlock (glwthread_rwlock_t *lock);
+extern int glwthread_rwlock_tryrdlock (glwthread_rwlock_t *lock);
+extern int glwthread_rwlock_trywrlock (glwthread_rwlock_t *lock);
+extern int glwthread_rwlock_unlock (glwthread_rwlock_t *lock);
+extern int glwthread_rwlock_destroy (glwthread_rwlock_t *lock);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _WINDOWS_RWLOCK_H */
diff --git a/src/grep/lib/wmemchr-impl.h b/src/grep/lib/wmemchr-impl.h
new file mode 100644
index 0000000..9cb4b20
--- /dev/null
+++ b/src/grep/lib/wmemchr-impl.h
@@ -0,0 +1,27 @@
+/* Search wide character array for a wide character.
+   Copyright (C) 1999, 2011-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 1999.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+wchar_t *
+wmemchr (const wchar_t *s, wchar_t c, size_t n)
+{
+  for (; n > 0; s++, n--)
+    {
+      if (*s == c)
+        return (wchar_t *) s;
+    }
+  return NULL;
+}
diff --git a/src/grep/lib/wmemchr.c b/src/grep/lib/wmemchr.c
new file mode 100644
index 0000000..78742e2
--- /dev/null
+++ b/src/grep/lib/wmemchr.c
@@ -0,0 +1,23 @@
+/* Search wide character array for a wide character.
+   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wchar.h>
+
+#include "wmemchr-impl.h"
diff --git a/src/grep/lib/wmempcpy.c b/src/grep/lib/wmempcpy.c
new file mode 100644
index 0000000..1d7588a
--- /dev/null
+++ b/src/grep/lib/wmempcpy.c
@@ -0,0 +1,28 @@
+/* Copy wide character array, return pointer after last written wide character.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wchar.h>
+
+/* Copy N wide characters of SRC to DEST.
+   Return pointer to wide characters after the last written wide character.  */
+wchar_t *
+wmempcpy (wchar_t *dest, const wchar_t *src, size_t n)
+{
+  return wmemcpy (dest, src, n) + n;
+}
diff --git a/src/grep/lib/xalloc-die.c b/src/grep/lib/xalloc-die.c
new file mode 100644
index 0000000..1bf0a9e
--- /dev/null
+++ b/src/grep/lib/xalloc-die.c
@@ -0,0 +1,41 @@
+/* Report a memory allocation failure and exit.
+
+   Copyright (C) 1997-2000, 2002-2004, 2006, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "xalloc.h"
+
+#include <stdlib.h>
+
+#include "error.h"
+#include "exitfail.h"
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+void
+xalloc_die (void)
+{
+  error (exit_failure, 0, "%s", _("memory exhausted"));
+
+  /* _Noreturn cannot be given to error, since it may return if
+     its first argument is 0.  To help compilers understand the
+     xalloc_die does not return, call abort.  Also, the abort is a
+     safety feature if exit_failure is 0 (which shouldn't happen).  */
+  abort ();
+}
diff --git a/src/grep/lib/xalloc-oversized.h b/src/grep/lib/xalloc-oversized.h
new file mode 100644
index 0000000..4184f33
--- /dev/null
+++ b/src/grep/lib/xalloc-oversized.h
@@ -0,0 +1,65 @@
+/* xalloc-oversized.h -- memory allocation size checking
+
+   Copyright (C) 1990-2000, 2003-2004, 2006-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef XALLOC_OVERSIZED_H_
+#define XALLOC_OVERSIZED_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+/* True if N * S does not fit into both ptrdiff_t and size_t.
+   N and S should be nonnegative and free of side effects.
+   This expands to a constant expression if N and S are both constants.
+   By gnulib convention, SIZE_MAX represents overflow in size_t
+   calculations, so the conservative size_t-based dividend to use here
+   is SIZE_MAX - 1.  */
+#define __xalloc_oversized(n, s) \
+  ((s) != 0 \
+   && ((size_t) (PTRDIFF_MAX < SIZE_MAX ? PTRDIFF_MAX : SIZE_MAX - 1) / (s) \
+       < (n)))
+
+/* Return 1 if and only if an array of N objects, each of size S,
+   cannot exist reliably because its total size in bytes would exceed
+   MIN (PTRDIFF_MAX, SIZE_MAX - 1).
+
+   N and S should be nonnegative and free of side effects.
+
+   Warning: (xalloc_oversized (N, S) ? NULL : malloc (N * S)) can
+   misbehave if N and S are both narrower than ptrdiff_t and size_t,
+   and can be rewritten as (xalloc_oversized (N, S) ?  NULL
+   : malloc (N * (size_t) S)).
+
+   This is a macro, not a function, so that it works even if an
+   argument exceeds MAX (PTRDIFF_MAX, SIZE_MAX).  */
+#if 7 <= __GNUC__ && !defined __clang__ && PTRDIFF_MAX < SIZE_MAX
+# define xalloc_oversized(n, s) \
+   __builtin_mul_overflow_p (n, s, (ptrdiff_t) 1)
+#elif (5 <= __GNUC__ && !defined __ICC && !__STRICT_ANSI__ \
+       && PTRDIFF_MAX < SIZE_MAX)
+# define xalloc_oversized(n, s) \
+   (__builtin_constant_p (n) && __builtin_constant_p (s) \
+    ? __xalloc_oversized (n, s) \
+    : ({ ptrdiff_t __xalloc_count; \
+         __builtin_mul_overflow (n, s, &__xalloc_count); }))
+
+/* Other compilers use integer division; this may be slower but is
+   more portable.  */
+#else
+# define xalloc_oversized(n, s) __xalloc_oversized (n, s)
+#endif
+
+#endif /* !XALLOC_OVERSIZED_H_ */
diff --git a/src/grep/lib/xalloc.h b/src/grep/lib/xalloc.h
new file mode 100644
index 0000000..ee07113
--- /dev/null
+++ b/src/grep/lib/xalloc.h
@@ -0,0 +1,210 @@
+/* xalloc.h -- malloc with out-of-memory checking
+
+   Copyright (C) 1990-2000, 2003-2004, 2006-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef XALLOC_H_
+#define XALLOC_H_
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#if GNULIB_XALLOC
+# include "idx.h"
+# include "intprops.h"
+#endif
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef XALLOC_INLINE
+# define XALLOC_INLINE _GL_INLINE
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#if GNULIB_XALLOC_DIE
+
+/* This function is always triggered when memory is exhausted.
+   It must be defined by the application, either explicitly
+   or by using gnulib's xalloc-die module.  This is the
+   function to call when one wants the program to die because of a
+   memory allocation failure.  */
+/*extern*/ _Noreturn void xalloc_die (void);
+
+#endif /* GNULIB_XALLOC_DIE */
+
+#if GNULIB_XALLOC
+
+void *xmalloc (size_t s)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+void *ximalloc (idx_t s)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+void *xzalloc (size_t s)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+void *xizalloc (idx_t s)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+void *xcalloc (size_t n, size_t s)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+void *xicalloc (idx_t n, idx_t s)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+void *xrealloc (void *p, size_t s)
+  _GL_ATTRIBUTE_ALLOC_SIZE ((2));
+void *xirealloc (void *p, idx_t s)
+  _GL_ATTRIBUTE_ALLOC_SIZE ((2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+void *xreallocarray (void *p, size_t n, size_t s)
+  _GL_ATTRIBUTE_ALLOC_SIZE ((2, 3));
+void *xireallocarray (void *p, idx_t n, idx_t s)
+  _GL_ATTRIBUTE_ALLOC_SIZE ((2, 3)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+void *x2realloc (void *p, size_t *ps) /* superseded by xpalloc */
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+void *x2nrealloc (void *p, size_t *pn, size_t s) /* superseded by xpalloc */
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+void *xpalloc (void *pa, idx_t *pn, idx_t n_incr_min, ptrdiff_t n_max, idx_t s)
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+void *xmemdup (void const *p, size_t s)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_ALLOC_SIZE ((2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+void *ximemdup (void const *p, idx_t s)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_ALLOC_SIZE ((2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+char *ximemdup0 (void const *p, idx_t s)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+char *xstrdup (char const *str)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+
+/* In the following macros, T must be an elementary or structure/union or
+   typedef'ed type, or a pointer to such a type.  To apply one of the
+   following macros to a function pointer or array type, you need to typedef
+   it first and use the typedef name.  */
+
+/* Allocate an object of type T dynamically, with error checking.  */
+/* extern t *XMALLOC (typename t); */
+# define XMALLOC(t) ((t *) xmalloc (sizeof (t)))
+
+/* Allocate memory for N elements of type T, with error checking.  */
+/* extern t *XNMALLOC (size_t n, typename t); */
+# define XNMALLOC(n, t) \
+    ((t *) (sizeof (t) == 1 ? xmalloc (n) : xnmalloc (n, sizeof (t))))
+
+/* Allocate an object of type T dynamically, with error checking,
+   and zero it.  */
+/* extern t *XZALLOC (typename t); */
+# define XZALLOC(t) ((t *) xzalloc (sizeof (t)))
+
+/* Allocate memory for N elements of type T, with error checking,
+   and zero it.  */
+/* extern t *XCALLOC (size_t n, typename t); */
+# define XCALLOC(n, t) \
+    ((t *) (sizeof (t) == 1 ? xzalloc (n) : xcalloc (n, sizeof (t))))
+
+
+/* Allocate an array of N objects, each with S bytes of memory,
+   dynamically, with error checking.  S must be nonzero.  */
+
+void *xnmalloc (size_t n, size_t s)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_ALLOC_SIZE ((1, 2)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+
+/* FIXME: Deprecate this in favor of xreallocarray?  */
+/* Change the size of an allocated block of memory P to an array of N
+   objects each of S bytes, with error checking.  S must be nonzero.  */
+
+XALLOC_INLINE void *xnrealloc (void *p, size_t n, size_t s)
+  _GL_ATTRIBUTE_ALLOC_SIZE ((2, 3));
+XALLOC_INLINE void *
+xnrealloc (void *p, size_t n, size_t s)
+{
+  return xreallocarray (p, n, s);
+}
+
+/* Return a pointer to a new buffer of N bytes.  This is like xmalloc,
+   except it returns char *.  */
+
+char *xcharalloc (size_t n)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+
+#endif /* GNULIB_XALLOC */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#if GNULIB_XALLOC && defined __cplusplus
+
+/* C++ does not allow conversions from void * to other pointer types
+   without a cast.  Use templates to work around the problem when
+   possible.  */
+
+template <typename T> inline T *
+xrealloc (T *p, size_t s)
+{
+  return (T *) xrealloc ((void *) p, s);
+}
+
+template <typename T> inline T *
+xreallocarray (T *p, size_t n, size_t s)
+{
+  return (T *) xreallocarray ((void *) p, n, s);
+}
+
+/* FIXME: Deprecate this in favor of xreallocarray?  */
+template <typename T> inline T *
+xnrealloc (T *p, size_t n, size_t s)
+{
+  return xreallocarray (p, n, s);
+}
+
+template <typename T> inline T *
+x2realloc (T *p, size_t *pn)
+{
+  return (T *) x2realloc ((void *) p, pn);
+}
+
+template <typename T> inline T *
+x2nrealloc (T *p, size_t *pn, size_t s)
+{
+  return (T *) x2nrealloc ((void *) p, pn, s);
+}
+
+template <typename T> inline T *
+xmemdup (T const *p, size_t s)
+{
+  return (T *) xmemdup ((void const *) p, s);
+}
+
+#endif /* GNULIB_XALLOC && C++ */
+
+
+_GL_INLINE_HEADER_END
+
+#endif /* !XALLOC_H_ */
diff --git a/src/grep/lib/xbinary-io.c b/src/grep/lib/xbinary-io.c
new file mode 100644
index 0000000..c53418e
--- /dev/null
+++ b/src/grep/lib/xbinary-io.c
@@ -0,0 +1,41 @@
+/* Binary mode I/O with checking
+   Copyright 2017-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define XBINARY_IO_INLINE _GL_EXTERN_INLINE
+#include "xbinary-io.h"
+
+#include <errno.h>
+#include <error.h>
+#include <stdbool.h>
+#include "exitfail.h"
+#include "verify.h"
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+#if O_BINARY
+
+_Noreturn void
+xset_binary_mode_error (void)
+{
+  error (exit_failure, errno,
+         _("failed to set file descriptor text/binary mode"));
+  assume (false);
+}
+
+#endif
diff --git a/src/grep/lib/xbinary-io.h b/src/grep/lib/xbinary-io.h
new file mode 100644
index 0000000..ef377d9
--- /dev/null
+++ b/src/grep/lib/xbinary-io.h
@@ -0,0 +1,48 @@
+/* Binary mode I/O with checking
+   Copyright 2017-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _XBINARY_IO_H
+#define _XBINARY_IO_H
+
+#include "binary-io.h"
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef XBINARY_IO_INLINE
+# define XBINARY_IO_INLINE _GL_INLINE
+#endif
+
+#if O_BINARY
+extern _Noreturn void xset_binary_mode_error (void);
+#else
+XBINARY_IO_INLINE void xset_binary_mode_error (void) {}
+#endif
+
+/* Set the mode of FD to MODE, which should be either O_TEXT or O_BINARY.
+   Report an error and exit if this fails.  */
+
+XBINARY_IO_INLINE void
+xset_binary_mode (int fd, int mode)
+{
+  if (set_binary_mode (fd, mode) < 0)
+    xset_binary_mode_error ();
+}
+
+_GL_INLINE_HEADER_END
+
+#endif /* _XBINARY_IO_H */
diff --git a/src/grep/lib/xmalloc.c b/src/grep/lib/xmalloc.c
new file mode 100644
index 0000000..51a0832
--- /dev/null
+++ b/src/grep/lib/xmalloc.c
@@ -0,0 +1,333 @@
+/* xmalloc.c -- malloc with out of memory checking
+
+   Copyright (C) 1990-2000, 2002-2006, 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#define XALLOC_INLINE _GL_EXTERN_INLINE
+
+#include "xalloc.h"
+
+#include "ialloc.h"
+#include "intprops.h"
+#include "minmax.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+static void * _GL_ATTRIBUTE_PURE
+nonnull (void *p)
+{
+  if (!p)
+    xalloc_die ();
+  return p;
+}
+
+/* Allocate S bytes of memory dynamically, with error checking.  */
+
+void *
+xmalloc (size_t s)
+{
+  return nonnull (malloc (s));
+}
+
+void *
+ximalloc (idx_t s)
+{
+  return nonnull (imalloc (s));
+}
+
+char *
+xcharalloc (size_t n)
+{
+  return XNMALLOC (n, char);
+}
+
+/* Change the size of an allocated block of memory P to S bytes,
+   with error checking.  */
+
+void *
+xrealloc (void *p, size_t s)
+{
+  void *r = realloc (p, s);
+  if (!r && (!p || s))
+    xalloc_die ();
+  return r;
+}
+
+void *
+xirealloc (void *p, idx_t s)
+{
+  return nonnull (irealloc (p, s));
+}
+
+/* Change the size of an allocated block of memory P to an array of N
+   objects each of S bytes, with error checking.  */
+
+void *
+xreallocarray (void *p, size_t n, size_t s)
+{
+  void *r = reallocarray (p, n, s);
+  if (!r && (!p || (n && s)))
+    xalloc_die ();
+  return r;
+}
+
+void *
+xireallocarray (void *p, idx_t n, idx_t s)
+{
+  return nonnull (ireallocarray (p, n, s));
+}
+
+/* Allocate an array of N objects, each with S bytes of memory,
+   dynamically, with error checking.  S must be nonzero.  */
+
+void *
+xnmalloc (size_t n, size_t s)
+{
+  return xreallocarray (NULL, n, s);
+}
+
+/* If P is null, allocate a block of at least *PS bytes; otherwise,
+   reallocate P so that it contains more than *PS bytes.  *PS must be
+   nonzero unless P is null.  Set *PS to the new block's size, and
+   return the pointer to the new block.  *PS is never set to zero, and
+   the returned pointer is never null.  */
+
+void *
+x2realloc (void *p, size_t *ps)
+{
+  return x2nrealloc (p, ps, 1);
+}
+
+/* If P is null, allocate a block of at least *PN such objects;
+   otherwise, reallocate P so that it contains more than *PN objects
+   each of S bytes.  S must be nonzero.  Set *PN to the new number of
+   objects, and return the pointer to the new block.  *PN is never set
+   to zero, and the returned pointer is never null.
+
+   Repeated reallocations are guaranteed to make progress, either by
+   allocating an initial block with a nonzero size, or by allocating a
+   larger block.
+
+   In the following implementation, nonzero sizes are increased by a
+   factor of approximately 1.5 so that repeated reallocations have
+   O(N) overall cost rather than O(N**2) cost, but the
+   specification for this function does not guarantee that rate.
+
+   Here is an example of use:
+
+     int *p = NULL;
+     size_t used = 0;
+     size_t allocated = 0;
+
+     void
+     append_int (int value)
+       {
+         if (used == allocated)
+           p = x2nrealloc (p, &allocated, sizeof *p);
+         p[used++] = value;
+       }
+
+   This causes x2nrealloc to allocate a block of some nonzero size the
+   first time it is called.
+
+   To have finer-grained control over the initial size, set *PN to a
+   nonzero value before calling this function with P == NULL.  For
+   example:
+
+     int *p = NULL;
+     size_t used = 0;
+     size_t allocated = 0;
+     size_t allocated1 = 1000;
+
+     void
+     append_int (int value)
+       {
+         if (used == allocated)
+           {
+             p = x2nrealloc (p, &allocated1, sizeof *p);
+             allocated = allocated1;
+           }
+         p[used++] = value;
+       }
+
+   */
+
+void *
+x2nrealloc (void *p, size_t *pn, size_t s)
+{
+  size_t n = *pn;
+
+  if (! p)
+    {
+      if (! n)
+        {
+          /* The approximate size to use for initial small allocation
+             requests, when the invoking code specifies an old size of
+             zero.  This is the largest "small" request for the GNU C
+             library malloc.  */
+          enum { DEFAULT_MXFAST = 64 * sizeof (size_t) / 4 };
+
+          n = DEFAULT_MXFAST / s;
+          n += !n;
+        }
+    }
+  else
+    {
+      /* Set N = floor (1.5 * N) + 1 to make progress even if N == 0.  */
+      if (INT_ADD_WRAPV (n, (n >> 1) + 1, &n))
+        xalloc_die ();
+    }
+
+  p = xreallocarray (p, n, s);
+  *pn = n;
+  return p;
+}
+
+/* Grow PA, which points to an array of *PN items, and return the
+   location of the reallocated array, updating *PN to reflect its
+   new size.  The new array will contain at least N_INCR_MIN more
+   items, but will not contain more than N_MAX items total.
+   S is the size of each item, in bytes.
+
+   S and N_INCR_MIN must be positive.  *PN must be
+   nonnegative.  If N_MAX is -1, it is treated as if it were
+   infinity.
+
+   If PA is null, then allocate a new array instead of reallocating
+   the old one.
+
+   Thus, to grow an array A without saving its old contents, do
+   { free (A); A = xpalloc (NULL, &AITEMS, ...); }.  */
+
+void *
+xpalloc (void *pa, idx_t *pn, idx_t n_incr_min, ptrdiff_t n_max, idx_t s)
+{
+  idx_t n0 = *pn;
+
+  /* The approximate size to use for initial small allocation
+     requests.  This is the largest "small" request for the GNU C
+     library malloc.  */
+  enum { DEFAULT_MXFAST = 64 * sizeof (size_t) / 4 };
+
+  /* If the array is tiny, grow it to about (but no greater than)
+     DEFAULT_MXFAST bytes.  Otherwise, grow it by about 50%.
+     Adjust the growth according to three constraints: N_INCR_MIN,
+     N_MAX, and what the C language can represent safely.  */
+
+  idx_t n;
+  if (INT_ADD_WRAPV (n0, n0 >> 1, &n))
+    n = IDX_MAX;
+  if (0 <= n_max && n_max < n)
+    n = n_max;
+
+  /* NBYTES is of a type suitable for holding the count of bytes in an object.
+     This is typically idx_t, but it should be size_t on (theoretical?)
+     platforms where SIZE_MAX < IDX_MAX so xpalloc does not pass
+     values greater than SIZE_MAX to xrealloc.  */
+#if IDX_MAX <= SIZE_MAX
+  idx_t nbytes;
+#else
+  size_t nbytes;
+#endif
+  idx_t adjusted_nbytes
+    = (INT_MULTIPLY_WRAPV (n, s, &nbytes)
+       ? MIN (IDX_MAX, SIZE_MAX)
+       : nbytes < DEFAULT_MXFAST ? DEFAULT_MXFAST : 0);
+  if (adjusted_nbytes)
+    {
+      n = adjusted_nbytes / s;
+      nbytes = adjusted_nbytes - adjusted_nbytes % s;
+    }
+
+  if (! pa)
+    *pn = 0;
+  if (n - n0 < n_incr_min
+      && (INT_ADD_WRAPV (n0, n_incr_min, &n)
+          || (0 <= n_max && n_max < n)
+          || INT_MULTIPLY_WRAPV (n, s, &nbytes)))
+    xalloc_die ();
+  pa = xrealloc (pa, nbytes);
+  *pn = n;
+  return pa;
+}
+
+/* Allocate S bytes of zeroed memory dynamically, with error checking.
+   There's no need for xnzalloc (N, S), since it would be equivalent
+   to xcalloc (N, S).  */
+
+void *
+xzalloc (size_t s)
+{
+  return xcalloc (s, 1);
+}
+
+void *
+xizalloc (idx_t s)
+{
+  return xicalloc (s, 1);
+}
+
+/* Allocate zeroed memory for N elements of S bytes, with error
+   checking.  S must be nonzero.  */
+
+void *
+xcalloc (size_t n, size_t s)
+{
+  return nonnull (calloc (n, s));
+}
+
+void *
+xicalloc (idx_t n, idx_t s)
+{
+  return nonnull (icalloc (n, s));
+}
+
+/* Clone an object P of size S, with error checking.  There's no need
+   for xnmemdup (P, N, S), since xmemdup (P, N * S) works without any
+   need for an arithmetic overflow check.  */
+
+void *
+xmemdup (void const *p, size_t s)
+{
+  return memcpy (xmalloc (s), p, s);
+}
+
+void *
+ximemdup (void const *p, idx_t s)
+{
+  return memcpy (ximalloc (s), p, s);
+}
+
+/* Clone an object P of size S, with error checking.  Append
+   a terminating NUL byte.  */
+
+char *
+ximemdup0 (void const *p, idx_t s)
+{
+  char *result = ximalloc (s + 1);
+  result[s] = 0;
+  return memcpy (result, p, s);
+}
+
+/* Clone STRING.  */
+
+char *
+xstrdup (char const *string)
+{
+  return xmemdup (string, strlen (string) + 1);
+}
diff --git a/src/grep/lib/xstriconv.c b/src/grep/lib/xstriconv.c
new file mode 100644
index 0000000..687a00b
--- /dev/null
+++ b/src/grep/lib/xstriconv.c
@@ -0,0 +1,62 @@
+/* Charset conversion with out-of-memory checking.
+   Copyright (C) 2001-2004, 2006, 2009-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "xstriconv.h"
+
+#include <errno.h>
+
+#include "striconv.h"
+#include "xalloc.h"
+
+
+#if HAVE_ICONV
+
+int
+xmem_cd_iconv (const char *src, size_t srclen, iconv_t cd,
+               char **resultp, size_t *lengthp)
+{
+  int retval = mem_cd_iconv (src, srclen, cd, resultp, lengthp);
+
+  if (retval < 0 && errno == ENOMEM)
+    xalloc_die ();
+  return retval;
+}
+
+char *
+xstr_cd_iconv (const char *src, iconv_t cd)
+{
+  char *result = str_cd_iconv (src, cd);
+
+  if (result == NULL && errno == ENOMEM)
+    xalloc_die ();
+  return result;
+}
+
+#endif
+
+char *
+xstr_iconv (const char *src, const char *from_codeset, const char *to_codeset)
+{
+  char *result = str_iconv (src, from_codeset, to_codeset);
+
+  if (result == NULL && errno == ENOMEM)
+    xalloc_die ();
+  return result;
+}
diff --git a/src/grep/lib/xstriconv.h b/src/grep/lib/xstriconv.h
new file mode 100644
index 0000000..879a772
--- /dev/null
+++ b/src/grep/lib/xstriconv.h
@@ -0,0 +1,80 @@
+/* Charset conversion with out-of-memory checking.
+   Copyright (C) 2001-2004, 2006-2007, 2009-2021 Free Software Foundation, Inc.
+   Written by Bruno Haible and Simon Josefsson.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _XSTRICONV_H
+#define _XSTRICONV_H
+
+#include <stdlib.h>
+#if HAVE_ICONV
+#include <iconv.h>
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#if HAVE_ICONV
+
+/* Convert an entire string from one encoding to another, using iconv.
+   The original string is at [SRC,...,SRC+SRCLEN-1].
+   The conversion descriptor is passed as CD.
+   *RESULTP and *LENGTH should initially be a scratch buffer and its size,
+   or *RESULTP can initially be NULL.
+   May erase the contents of the memory at *RESULTP.
+   Upon memory allocation failure, report the error and exit.
+   Return value: 0 if successful, otherwise -1 and errno set.
+   If successful: The resulting string is stored in *RESULTP and its length
+   in *LENGTHP.  *RESULTP is set to a freshly allocated memory block, or is
+   unchanged if no dynamic memory allocation was necessary.  */
+extern int xmem_cd_iconv (const char *src, size_t srclen, iconv_t cd,
+                          char **resultp, size_t *lengthp);
+
+/* Convert an entire string from one encoding to another, using iconv.
+   The original string is the NUL-terminated string starting at SRC.
+   The conversion descriptor is passed as CD.  Both the "from" and the "to"
+   encoding must use a single NUL byte at the end of the string (i.e. not
+   UCS-2, UCS-4, UTF-16, UTF-32).
+   Allocate a malloced memory block for the result.
+   Upon memory allocation failure, report the error and exit.
+   Return value: the freshly allocated resulting NUL-terminated string if
+   successful, otherwise NULL and errno set.  */
+extern char * xstr_cd_iconv (const char *src, iconv_t cd)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
+
+#endif
+
+/* Convert an entire string from one encoding to another, using iconv.
+   The original string is the NUL-terminated string starting at SRC.
+   Both the "from" and the "to" encoding must use a single NUL byte at the
+   end of the string (i.e. not UCS-2, UCS-4, UTF-16, UTF-32).
+   Allocate a malloced memory block for the result.
+   Upon memory allocation failure, report the error and exit.
+   Return value: the freshly allocated resulting NUL-terminated string if
+   successful, otherwise NULL and errno set.  */
+extern char * xstr_iconv (const char *src,
+                          const char *from_codeset, const char *to_codeset)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _XSTRICONV_H */
diff --git a/src/grep/lib/xstrtoimax.c b/src/grep/lib/xstrtoimax.c
new file mode 100644
index 0000000..17bd54c
--- /dev/null
+++ b/src/grep/lib/xstrtoimax.c
@@ -0,0 +1,23 @@
+/* A more useful interface to strtoimax.
+
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License,
+   or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define __strtol strtoimax
+#define __strtol_t intmax_t
+#define __xstrtol xstrtoimax
+#define STRTOL_T_MINIMUM INTMAX_MIN
+#define STRTOL_T_MAXIMUM INTMAX_MAX
+#include "xstrtol.c"
diff --git a/src/grep/lib/xstrtol.c b/src/grep/lib/xstrtol.c
new file mode 100644
index 0000000..2eab22a
--- /dev/null
+++ b/src/grep/lib/xstrtol.c
@@ -0,0 +1,237 @@
+/* A more useful interface to strtol.
+
+   Copyright (C) 1995-1996, 1998-2001, 2003-2007, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering. */
+
+#ifndef __strtol
+# define __strtol strtol
+# define __strtol_t long int
+# define __xstrtol xstrtol
+# define STRTOL_T_MINIMUM LONG_MIN
+# define STRTOL_T_MAXIMUM LONG_MAX
+#endif
+
+#include <config.h>
+
+#include "xstrtol.h"
+
+/* Some pre-ANSI implementations (e.g. SunOS 4)
+   need stderr defined if assertion checking is enabled.  */
+#include <stdio.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "assure.h"
+
+#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+
+static strtol_error
+bkm_scale (__strtol_t *x, int scale_factor)
+{
+  if (TYPE_SIGNED (__strtol_t) && *x < STRTOL_T_MINIMUM / scale_factor)
+    {
+      *x = STRTOL_T_MINIMUM;
+      return LONGINT_OVERFLOW;
+    }
+  if (STRTOL_T_MAXIMUM / scale_factor < *x)
+    {
+      *x = STRTOL_T_MAXIMUM;
+      return LONGINT_OVERFLOW;
+    }
+  *x *= scale_factor;
+  return LONGINT_OK;
+}
+
+static strtol_error
+bkm_scale_by_power (__strtol_t *x, int base, int power)
+{
+  strtol_error err = LONGINT_OK;
+  while (power--)
+    err |= bkm_scale (x, base);
+  return err;
+}
+
+/* FIXME: comment.  */
+
+strtol_error
+__xstrtol (const char *s, char **ptr, int strtol_base,
+           __strtol_t *val, const char *valid_suffixes)
+{
+  char *t_ptr;
+  char **p;
+  __strtol_t tmp;
+  strtol_error err = LONGINT_OK;
+
+  assure (0 <= strtol_base && strtol_base <= 36);
+
+  p = (ptr ? ptr : &t_ptr);
+
+  errno = 0;
+
+  if (! TYPE_SIGNED (__strtol_t))
+    {
+      const char *q = s;
+      unsigned char ch = *q;
+      while (isspace (ch))
+        ch = *++q;
+      if (ch == '-')
+        return LONGINT_INVALID;
+    }
+
+  tmp = __strtol (s, p, strtol_base);
+
+  if (*p == s)
+    {
+      /* If there is no number but there is a valid suffix, assume the
+         number is 1.  The string is invalid otherwise.  */
+      if (valid_suffixes && **p && strchr (valid_suffixes, **p))
+        tmp = 1;
+      else
+        return LONGINT_INVALID;
+    }
+  else if (errno != 0)
+    {
+      if (errno != ERANGE)
+        return LONGINT_INVALID;
+      err = LONGINT_OVERFLOW;
+    }
+
+  /* Let valid_suffixes == NULL mean "allow any suffix".  */
+  /* FIXME: update all callers except the ones that allow suffixes
+     after the number, changing last parameter NULL to "".  */
+  if (!valid_suffixes)
+    {
+      *val = tmp;
+      return err;
+    }
+
+  if (**p != '\0')
+    {
+      int base = 1024;
+      int suffixes = 1;
+      strtol_error overflow;
+
+      if (!strchr (valid_suffixes, **p))
+        {
+          *val = tmp;
+          return err | LONGINT_INVALID_SUFFIX_CHAR;
+        }
+
+      switch (**p)
+        {
+        case 'E': case 'G': case 'g': case 'k': case 'K': case 'M': case 'm':
+        case 'P': case 'T': case 't': case 'Y': case 'Z':
+
+          /* The "valid suffix" '0' is a special flag meaning that
+             an optional second suffix is allowed, which can change
+             the base.  A suffix "B" (e.g. "100MB") stands for a power
+             of 1000, whereas a suffix "iB" (e.g. "100MiB") stands for
+             a power of 1024.  If no suffix (e.g. "100M"), assume
+             power-of-1024.  */
+
+          if (strchr (valid_suffixes, '0'))
+            switch (p[0][1])
+              {
+              case 'i':
+                if (p[0][2] == 'B')
+                  suffixes += 2;
+                break;
+
+              case 'B':
+              case 'D': /* 'D' is obsolescent */
+                base = 1000;
+                suffixes++;
+                break;
+              }
+        }
+
+      switch (**p)
+        {
+        case 'b':
+          overflow = bkm_scale (&tmp, 512);
+          break;
+
+        case 'B':
+          /* This obsolescent first suffix is distinct from the 'B'
+             second suffix above.  E.g., 'tar -L 1000B' means change
+             the tape after writing 1000 KiB of data.  */
+          overflow = bkm_scale (&tmp, 1024);
+          break;
+
+        case 'c':
+          overflow = LONGINT_OK;
+          break;
+
+        case 'E': /* exa or exbi */
+          overflow = bkm_scale_by_power (&tmp, base, 6);
+          break;
+
+        case 'G': /* giga or gibi */
+        case 'g': /* 'g' is undocumented; for compatibility only */
+          overflow = bkm_scale_by_power (&tmp, base, 3);
+          break;
+
+        case 'k': /* kilo */
+        case 'K': /* kibi */
+          overflow = bkm_scale_by_power (&tmp, base, 1);
+          break;
+
+        case 'M': /* mega or mebi */
+        case 'm': /* 'm' is undocumented; for compatibility only */
+          overflow = bkm_scale_by_power (&tmp, base, 2);
+          break;
+
+        case 'P': /* peta or pebi */
+          overflow = bkm_scale_by_power (&tmp, base, 5);
+          break;
+
+        case 'T': /* tera or tebi */
+        case 't': /* 't' is undocumented; for compatibility only */
+          overflow = bkm_scale_by_power (&tmp, base, 4);
+          break;
+
+        case 'w':
+          overflow = bkm_scale (&tmp, 2);
+          break;
+
+        case 'Y': /* yotta or 2**80 */
+          overflow = bkm_scale_by_power (&tmp, base, 8);
+          break;
+
+        case 'Z': /* zetta or 2**70 */
+          overflow = bkm_scale_by_power (&tmp, base, 7);
+          break;
+
+        default:
+          *val = tmp;
+          return err | LONGINT_INVALID_SUFFIX_CHAR;
+        }
+
+      err |= overflow;
+      *p += suffixes;
+      if (**p)
+        err |= LONGINT_INVALID_SUFFIX_CHAR;
+    }
+
+  *val = tmp;
+  return err;
+}
diff --git a/src/grep/lib/xstrtol.h b/src/grep/lib/xstrtol.h
new file mode 100644
index 0000000..b873033
--- /dev/null
+++ b/src/grep/lib/xstrtol.h
@@ -0,0 +1,50 @@
+/* A more useful interface to strtol.
+
+   Copyright (C) 1995-1996, 1998-1999, 2001-2004, 2006-2021 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef XSTRTOL_H_
+# define XSTRTOL_H_ 1
+
+# include <inttypes.h>
+
+# ifndef _STRTOL_ERROR
+enum strtol_error
+  {
+    LONGINT_OK = 0,
+
+    /* These two values can be ORed together, to indicate that both
+       errors occurred.  */
+    LONGINT_OVERFLOW = 1,
+    LONGINT_INVALID_SUFFIX_CHAR = 2,
+
+    LONGINT_INVALID_SUFFIX_CHAR_WITH_OVERFLOW = (LONGINT_INVALID_SUFFIX_CHAR
+                                                 | LONGINT_OVERFLOW),
+    LONGINT_INVALID = 4
+  };
+typedef enum strtol_error strtol_error;
+# endif
+
+# define _DECLARE_XSTRTOL(name, type) \
+  strtol_error name (const char *, char **, int, type *, const char *);
+_DECLARE_XSTRTOL (xstrtol, long int)
+_DECLARE_XSTRTOL (xstrtoul, unsigned long int)
+_DECLARE_XSTRTOL (xstrtoll, long long int)
+_DECLARE_XSTRTOL (xstrtoull, unsigned long long int)
+_DECLARE_XSTRTOL (xstrtoimax, intmax_t)
+_DECLARE_XSTRTOL (xstrtoumax, uintmax_t)
+
+#endif /* not XSTRTOL_H_ */
diff --git a/src/grep/lib/xstrtoul.c b/src/grep/lib/xstrtoul.c
new file mode 100644
index 0000000..c705a4c
--- /dev/null
+++ b/src/grep/lib/xstrtoul.c
@@ -0,0 +1,23 @@
+/* Convert string to 'unsigned long', with error checking.
+
+   Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License,
+   or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define __strtol strtoul
+#define __strtol_t unsigned long int
+#define __xstrtol xstrtoul
+#define STRTOL_T_MINIMUM 0
+#define STRTOL_T_MAXIMUM ULONG_MAX
+#include "xstrtol.c"
diff --git a/src/grep/m4/00gnulib.m4 b/src/grep/m4/00gnulib.m4
new file mode 100644
index 0000000..9ba1743
--- /dev/null
+++ b/src/grep/m4/00gnulib.m4
@@ -0,0 +1,85 @@
+# 00gnulib.m4 serial 8
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl This file must be named something that sorts before all other
+dnl gnulib-provided .m4 files.  It is needed until the clang fix has
+dnl been included in Autoconf.
+
+# The following definitions arrange to use a compiler option
+# -Werror=implicit-function-declaration in AC_CHECK_DECL, when the
+# compiler is clang.  Without it, clang implicitly declares "known"
+# library functions in C mode, but not in C++ mode, which would cause
+# Gnulib to omit a declaration and thus later produce an error in C++
+# mode.  As of clang 9.0, these "known" functions are identified through
+# LIBBUILTIN invocations in the LLVM source file
+# llvm/tools/clang/include/clang/Basic/Builtins.def.
+# It's not possible to AC_REQUIRE the extra tests from AC_CHECK_DECL,
+# because AC_CHECK_DECL, like other Autoconf built-ins, is not supposed
+# to AC_REQUIRE anything: some configure.ac files have their first
+# AC_CHECK_DECL executed conditionally.  Therefore append the extra tests
+# to AC_PROG_CC.
+AC_DEFUN([gl_COMPILER_CLANG],
+[
+dnl AC_REQUIRE([AC_PROG_CC])
+  AC_CACHE_CHECK([whether the compiler is clang],
+    [gl_cv_compiler_clang],
+    [dnl Use _AC_COMPILE_IFELSE instead of AC_EGREP_CPP, to avoid error
+     dnl "circular dependency of AC_LANG_COMPILER(C)" if AC_PROG_CC has
+     dnl not yet been invoked.
+     _AC_COMPILE_IFELSE(
+        [AC_LANG_PROGRAM([[
+           #ifdef __clang__
+           barfbarf
+           #endif
+           ]],[[]])
+        ],
+        [gl_cv_compiler_clang=no],
+        [gl_cv_compiler_clang=yes])
+    ])
+])
+AC_DEFUN([gl_COMPILER_PREPARE_CHECK_DECL],
+[
+dnl AC_REQUIRE([AC_PROG_CC])
+dnl AC_REQUIRE([gl_COMPILER_CLANG])
+  AC_CACHE_CHECK([for compiler option needed when checking for declarations],
+    [gl_cv_compiler_check_decl_option],
+    [if test $gl_cv_compiler_clang = yes; then
+       dnl Test whether the compiler supports the option
+       dnl '-Werror=implicit-function-declaration'.
+       save_ac_compile="$ac_compile"
+       ac_compile="$ac_compile -Werror=implicit-function-declaration"
+       dnl Use _AC_COMPILE_IFELSE instead of AC_COMPILE_IFELSE, to avoid a
+       dnl warning "AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS".
+       _AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]],[[]])],
+         [gl_cv_compiler_check_decl_option='-Werror=implicit-function-declaration'],
+         [gl_cv_compiler_check_decl_option=none])
+       ac_compile="$save_ac_compile"
+     else
+       gl_cv_compiler_check_decl_option=none
+     fi
+    ])
+  if test "x$gl_cv_compiler_check_decl_option" != xnone; then
+    ac_compile_for_check_decl="$ac_compile $gl_cv_compiler_check_decl_option"
+  else
+    ac_compile_for_check_decl="$ac_compile"
+  fi
+])
+dnl Redefine _AC_CHECK_DECL_BODY so that it references ac_compile_for_check_decl
+dnl instead of ac_compile.  If, for whatever reason, the override of AC_PROG_CC
+dnl in zzgnulib.m4 is inactive, use the original ac_compile.
+m4_define([_AC_CHECK_DECL_BODY],
+[  ac_save_ac_compile="$ac_compile"
+  if test -n "$ac_compile_for_check_decl"; then
+    ac_compile="$ac_compile_for_check_decl"
+  fi]
+m4_defn([_AC_CHECK_DECL_BODY])[  ac_compile="$ac_save_ac_compile"
+])
+
+# gl_00GNULIB
+# -----------
+# Witness macro that this file has been included.  Needed to force
+# Automake to include this file prior to all other gnulib .m4 files.
+AC_DEFUN([gl_00GNULIB])
diff --git a/src/grep/m4/__inline.m4 b/src/grep/m4/__inline.m4
new file mode 100644
index 0000000..b28cc6a
--- /dev/null
+++ b/src/grep/m4/__inline.m4
@@ -0,0 +1,22 @@
+# Test for __inline keyword
+dnl Copyright 2017-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl___INLINE],
+[
+  AC_CACHE_CHECK([whether the compiler supports the __inline keyword],
+    [gl_cv_c___inline],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+         [[typedef int foo_t;
+           static __inline foo_t foo (void) { return 0; }]],
+         [[return foo ();]])],
+       [gl_cv_c___inline=yes],
+       [gl_cv_c___inline=no])])
+  if test $gl_cv_c___inline = yes; then
+    AC_DEFINE([HAVE___INLINE], [1],
+      [Define to 1 if the compiler supports the keyword '__inline'.])
+  fi
+])
diff --git a/src/grep/m4/absolute-header.m4 b/src/grep/m4/absolute-header.m4
new file mode 100644
index 0000000..52d80d0
--- /dev/null
+++ b/src/grep/m4/absolute-header.m4
@@ -0,0 +1,100 @@
+# absolute-header.m4 serial 17
+dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Derek Price.
+
+# gl_ABSOLUTE_HEADER(HEADER1 HEADER2 ...)
+# ---------------------------------------
+# Find the absolute name of a header file, testing first if the header exists.
+# If the header were sys/inttypes.h, this macro would define
+# ABSOLUTE_SYS_INTTYPES_H to the '""' quoted absolute name of sys/inttypes.h
+# in config.h
+# (e.g. '#define ABSOLUTE_SYS_INTTYPES_H "///usr/include/sys/inttypes.h"').
+# The three "///" are to pacify Sun C 5.8, which otherwise would say
+# "warning: #include of /usr/include/... may be non-portable".
+# Use '""', not '<>', so that the /// cannot be confused with a C99 comment.
+# Note: This macro assumes that the header file is not empty after
+# preprocessing, i.e. it does not only define preprocessor macros but also
+# provides some type/enum definitions or function/variable declarations.
+AC_DEFUN([gl_ABSOLUTE_HEADER],
+[AC_REQUIRE([AC_CANONICAL_HOST])
+AC_LANG_PREPROC_REQUIRE()dnl
+m4_foreach_w([gl_HEADER_NAME], [$1],
+  [AS_VAR_PUSHDEF([gl_absolute_header],
+                  [gl_cv_absolute_]m4_defn([gl_HEADER_NAME]))dnl
+  AC_CACHE_CHECK([absolute name of <]m4_defn([gl_HEADER_NAME])[>],
+    [gl_absolute_header],
+    [AS_VAR_PUSHDEF([ac_header_exists],
+                    [ac_cv_header_]m4_defn([gl_HEADER_NAME]))dnl
+    AC_CHECK_HEADERS_ONCE(m4_defn([gl_HEADER_NAME]))dnl
+    if test AS_VAR_GET([ac_header_exists]) = yes; then
+      gl_ABSOLUTE_HEADER_ONE(m4_defn([gl_HEADER_NAME]))
+    fi
+    AS_VAR_POPDEF([ac_header_exists])dnl
+    ])dnl
+  AC_DEFINE_UNQUOTED(AS_TR_CPP([ABSOLUTE_]m4_defn([gl_HEADER_NAME])),
+                     ["AS_VAR_GET([gl_absolute_header])"],
+                     [Define this to an absolute name of <]m4_defn([gl_HEADER_NAME])[>.])
+  AS_VAR_POPDEF([gl_absolute_header])dnl
+])dnl
+])# gl_ABSOLUTE_HEADER
+
+# gl_ABSOLUTE_HEADER_ONE(HEADER)
+# ------------------------------
+# Like gl_ABSOLUTE_HEADER, except that:
+#   - it assumes that the header exists,
+#   - it uses the current CPPFLAGS,
+#   - it does not cache the result,
+#   - it is silent.
+AC_DEFUN([gl_ABSOLUTE_HEADER_ONE],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_LANG_CONFTEST([AC_LANG_SOURCE([[#include <]]m4_dquote([$1])[[>]])])
+  dnl AIX "xlc -E" and "cc -E" omit #line directives for header files
+  dnl that contain only a #include of other header files and no
+  dnl non-comment tokens of their own. This leads to a failure to
+  dnl detect the absolute name of <dirent.h>, <signal.h>, <poll.h>
+  dnl and others. The workaround is to force preservation of comments
+  dnl through option -C. This ensures all necessary #line directives
+  dnl are present. GCC supports option -C as well.
+  case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+changequote(,)
+  case "$host_os" in
+    mingw*)
+      dnl For the sake of native Windows compilers (excluding gcc),
+      dnl treat backslash as a directory separator, like /.
+      dnl Actually, these compilers use a double-backslash as
+      dnl directory separator, inside the
+      dnl   # line "filename"
+      dnl directives.
+      gl_dirsep_regex='[/\\]'
+      ;;
+    *)
+      gl_dirsep_regex='\/'
+      ;;
+  esac
+  dnl A sed expression that turns a string into a basic regular
+  dnl expression, for use within "/.../".
+  gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+  gl_header_literal_regex=`echo '$1' \
+                           | sed -e "$gl_make_literal_regex_sed"`
+  gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+      s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+      s|^/[^/]|//&|
+      p
+      q
+    }'
+changequote([,])
+  dnl eval is necessary to expand gl_absname_cpp.
+  dnl Ultrix and Pyramid sh refuse to redirect output of eval,
+  dnl so use subshell.
+  AS_VAR_SET([gl_cv_absolute_]AS_TR_SH([[$1]]),
+[`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
+  sed -n "$gl_absolute_header_sed"`])
+])
diff --git a/src/grep/m4/alloca.m4 b/src/grep/m4/alloca.m4
new file mode 100644
index 0000000..ba2f679
--- /dev/null
+++ b/src/grep/m4/alloca.m4
@@ -0,0 +1,108 @@
+# alloca.m4 serial 20
+dnl Copyright (C) 2002-2004, 2006-2007, 2009-2021 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_ALLOCA],
+[
+  AC_REQUIRE([AC_FUNC_ALLOCA])
+  if test $ac_cv_func_alloca_works = no; then
+    gl_PREREQ_ALLOCA
+  fi
+
+  # Define an additional variable used in the Makefile substitution.
+  if test $ac_cv_working_alloca_h = yes; then
+    AC_CACHE_CHECK([for alloca as a compiler built-in], [gl_cv_rpl_alloca], [
+      AC_EGREP_CPP([Need own alloca], [
+#if defined __GNUC__ || defined _AIX || defined _MSC_VER
+        Need own alloca
+#endif
+        ], [gl_cv_rpl_alloca=yes], [gl_cv_rpl_alloca=no])
+    ])
+    if test $gl_cv_rpl_alloca = yes; then
+      dnl OK, alloca can be implemented through a compiler built-in.
+      AC_DEFINE([HAVE_ALLOCA], [1],
+        [Define to 1 if you have 'alloca' after including <alloca.h>,
+         a header that may be supplied by this distribution.])
+      ALLOCA_H=alloca.h
+    else
+      dnl alloca exists as a library function, i.e. it is slow and probably
+      dnl a memory leak. Don't define HAVE_ALLOCA in this case.
+      ALLOCA_H=
+    fi
+  else
+    ALLOCA_H=alloca.h
+  fi
+  AC_SUBST([ALLOCA_H])
+  AM_CONDITIONAL([GL_GENERATE_ALLOCA_H], [test -n "$ALLOCA_H"])
+
+  if test $ac_cv_working_alloca_h = yes; then
+    HAVE_ALLOCA_H=1
+  else
+    HAVE_ALLOCA_H=0
+  fi
+  AC_SUBST([HAVE_ALLOCA_H])
+])
+
+# Prerequisites of lib/alloca.c.
+# STACK_DIRECTION is already handled by AC_FUNC_ALLOCA.
+AC_DEFUN([gl_PREREQ_ALLOCA], [:])
+
+m4_version_prereq([2.70], [], [
+
+# This works around a bug in autoconf <= 2.68 and has simplifications
+# from 2.70.  See:
+# https://lists.gnu.org/r/bug-gnulib/2011-06/msg00277.html
+# https://git.savannah.gnu.org/cgit/autoconf.git/commit/?id=6cd9f12520b0d6f76d3230d7565feba1ecf29497
+# https://git.savannah.gnu.org/cgit/autoconf.git/commit/?id=15edf7fd8094fd14a89d9891dd72a9624762597a
+
+# _AC_LIBOBJ_ALLOCA
+# -----------------
+# Set up the LIBOBJ replacement of 'alloca'.  Well, not exactly
+# AC_LIBOBJ since we actually set the output variable 'ALLOCA'.
+# Nevertheless, for Automake, AC_LIBSOURCES it.
+m4_define([_AC_LIBOBJ_ALLOCA],
+[# The SVR3 libPW and SVR4 libucb both contain incompatible functions
+# that cause trouble.  Some versions do not even contain alloca or
+# contain a buggy version.  If you still want to use their alloca,
+# use ar to extract alloca.o from them instead of compiling alloca.c.
+AC_LIBSOURCES(alloca.c)
+AC_SUBST([ALLOCA], [\${LIBOBJDIR}alloca.$ac_objext])dnl
+AC_DEFINE(C_ALLOCA, 1, [Define to 1 if using 'alloca.c'.])
+
+AC_CACHE_CHECK([stack direction for C alloca],
+               [ac_cv_c_stack_direction],
+[AC_RUN_IFELSE([AC_LANG_SOURCE(
+[AC_INCLUDES_DEFAULT
+int
+find_stack_direction (int *addr, int depth)
+{
+  int dir, dummy = 0;
+  if (! addr)
+    addr = &dummy;
+  *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
+  dir = depth ? find_stack_direction (addr, depth - 1) : 0;
+  return dir + dummy;
+}
+
+int
+main (int argc, char **argv)
+{
+  return find_stack_direction (0, argc + !argv + 20) < 0;
+}])],
+               [ac_cv_c_stack_direction=1],
+               [ac_cv_c_stack_direction=-1],
+               [ac_cv_c_stack_direction=0])])
+AH_VERBATIM([STACK_DIRECTION],
+[/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at runtime.
+        STACK_DIRECTION > 0 => grows toward higher addresses
+        STACK_DIRECTION < 0 => grows toward lower addresses
+        STACK_DIRECTION = 0 => direction of growth unknown */
+#undef STACK_DIRECTION])dnl
+AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction)
+])# _AC_LIBOBJ_ALLOCA
+])
diff --git a/src/grep/m4/arpa_inet_h.m4 b/src/grep/m4/arpa_inet_h.m4
new file mode 100644
index 0000000..a3ba256
--- /dev/null
+++ b/src/grep/m4/arpa_inet_h.m4
@@ -0,0 +1,74 @@
+# arpa_inet_h.m4 serial 17
+dnl Copyright (C) 2006, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Simon Josefsson and Bruno Haible
+
+AC_DEFUN_ONCE([gl_ARPA_INET_H],
+[
+  dnl Ensure to expand the default settings once only, before all statements
+  dnl that occur in other macros.
+  AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS])
+
+  AC_CHECK_HEADERS_ONCE([arpa/inet.h])
+  if test $ac_cv_header_arpa_inet_h = yes; then
+    HAVE_ARPA_INET_H=1
+  else
+    HAVE_ARPA_INET_H=0
+  fi
+  AC_SUBST([HAVE_ARPA_INET_H])
+  dnl <arpa/inet.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_CHECK_NEXT_HEADERS([arpa/inet.h])
+
+  AC_REQUIRE([gl_FEATURES_H])
+
+  gl_PREREQ_SYS_H_WS2TCPIP
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[
+/* On some systems, this header is not self-consistent.  */
+#if !(defined __GLIBC__ || defined __UCLIBC__)
+# include <sys/socket.h>
+#endif
+#ifdef __TANDEM
+# include <netdb.h>
+#endif
+#include <arpa/inet.h>
+    ]], [inet_ntop inet_pton])
+])
+
+# gl_ARPA_INET_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_ARPA_INET_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_ARPA_INET_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_ARPA_INET_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_ARPA_INET_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_INET_NTOP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_INET_PTON])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_ARPA_INET_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_ARPA_INET_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_DECL_INET_NTOP=1;  AC_SUBST([HAVE_DECL_INET_NTOP])
+  HAVE_DECL_INET_PTON=1;  AC_SUBST([HAVE_DECL_INET_PTON])
+  REPLACE_INET_NTOP=0;    AC_SUBST([REPLACE_INET_NTOP])
+  REPLACE_INET_PTON=0;    AC_SUBST([REPLACE_INET_PTON])
+])
diff --git a/src/grep/m4/asm-underscore.m4 b/src/grep/m4/asm-underscore.m4
new file mode 100644
index 0000000..93b98be
--- /dev/null
+++ b/src/grep/m4/asm-underscore.m4
@@ -0,0 +1,83 @@
+# asm-underscore.m4 serial 5
+dnl Copyright (C) 2010-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible. Based on as-underscore.m4 in GNU clisp.
+
+# gl_ASM_SYMBOL_PREFIX
+# Tests for the prefix of C symbols at the assembly language level and the
+# linker level. This prefix is either an underscore or empty. Defines the
+# C macro USER_LABEL_PREFIX to this prefix, and sets ASM_SYMBOL_PREFIX to
+# a stringified variant of this prefix.
+
+AC_DEFUN([gl_ASM_SYMBOL_PREFIX],
+[
+  AC_REQUIRE([AC_PROG_EGREP])
+  dnl We don't use GCC's __USER_LABEL_PREFIX__ here, because
+  dnl 1. It works only for GCC.
+  dnl 2. It is incorrectly defined on some platforms, in some GCC versions.
+  AC_REQUIRE([gl_C_ASM])
+  AC_CACHE_CHECK(
+    [whether C symbols are prefixed with underscore at the linker level],
+    [gl_cv_prog_as_underscore],
+    [cat > conftest.c <<EOF
+#ifdef __cplusplus
+extern "C" int foo (void);
+#endif
+int foo(void) { return 0; }
+EOF
+     # Look for the assembly language name in the .s file.
+     AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS $gl_c_asm_opt conftest.c) >/dev/null 2>&1
+     if LC_ALL=C $EGREP '(^|[[^a-zA-Z0-9_]])_foo([[^a-zA-Z0-9_]]|$)' conftest.$gl_asmext >/dev/null; then
+       gl_cv_prog_as_underscore=yes
+     else
+       gl_cv_prog_as_underscore=no
+     fi
+     rm -f conftest*
+    ])
+  if test $gl_cv_prog_as_underscore = yes; then
+    USER_LABEL_PREFIX=_
+  else
+    USER_LABEL_PREFIX=
+  fi
+  AC_DEFINE_UNQUOTED([USER_LABEL_PREFIX], [$USER_LABEL_PREFIX],
+    [Define to the prefix of C symbols at the assembler and linker level,
+     either an underscore or empty.])
+  ASM_SYMBOL_PREFIX='"'${USER_LABEL_PREFIX}'"'
+  AC_SUBST([ASM_SYMBOL_PREFIX])
+])
+
+# gl_C_ASM
+# Determines how to produce an assembly language file from C source code.
+# Sets the variables:
+#   gl_asmext - the extension of assembly language output,
+#   gl_c_asm_opt - the C compiler option that produces assembly language output.
+
+AC_DEFUN([gl_C_ASM],
+[
+  AC_EGREP_CPP([MicrosoftCompiler],
+    [
+#ifdef _MSC_VER
+MicrosoftCompiler
+#endif
+    ],
+    [dnl Microsoft's 'cl' and 'clang-cl' produce an .asm file, whereas 'clang'
+     dnl produces a .s file. Need to distinguish 'clang' and 'clang-cl'.
+     rm -f conftest*
+     echo 'int dummy;' > conftest.c
+     AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c) >/dev/null 2>&1
+     if test -f conftest.o; then
+       gl_asmext='s'
+       gl_c_asm_opt='-S'
+     else
+       gl_asmext='asm'
+       gl_c_asm_opt='-c -Fa'
+     fi
+     rm -f conftest*
+    ],
+    [gl_asmext='s'
+     gl_c_asm_opt='-S'
+    ])
+])
diff --git a/src/grep/m4/assert.m4 b/src/grep/m4/assert.m4
new file mode 100644
index 0000000..b5e56d7
--- /dev/null
+++ b/src/grep/m4/assert.m4
@@ -0,0 +1,24 @@
+#serial 7
+
+# Copyright (C) 1998-1999, 2001, 2004, 2008-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl based on code from Eleftherios Gkioulekas
+dnl Autoconf 2.60 provides AC_HEADER_ASSERT for the same purpose, but
+dnl it has broken semantics for --enable-assert until 2.64.
+AC_DEFUN([gl_ASSERT],
+[
+  AC_MSG_CHECKING([whether to enable assertions])
+  AC_ARG_ENABLE([assert],
+    [AS_HELP_STRING([--disable-assert], [turn off assertions])],
+    [AS_IF([test "x$enableval" = xno],
+      [AC_DEFINE([NDEBUG], [1],
+        [Define to 1 if assertions should be disabled.])],
+      [test "x$enableval" != xyes],
+      [AC_MSG_WARN([invalid argument supplied to --enable-assert])
+      enable_assert=yes])],
+    [enable_assert=yes])
+  AC_MSG_RESULT([$enable_assert])
+])
diff --git a/src/grep/m4/btowc.m4 b/src/grep/m4/btowc.m4
new file mode 100644
index 0000000..d2b2fe8
--- /dev/null
+++ b/src/grep/m4/btowc.m4
@@ -0,0 +1,105 @@
+# btowc.m4 serial 12
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_BTOWC],
+[
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+
+  dnl Check whether <wchar.h> is usable at all, first. Otherwise the test
+  dnl program below may lead to an endless loop. See
+  dnl <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42440>.
+  AC_REQUIRE([gl_WCHAR_H_INLINE_OK])
+
+  AC_CHECK_FUNCS_ONCE([btowc])
+  if test $ac_cv_func_btowc = no; then
+    HAVE_BTOWC=0
+  else
+
+    AC_REQUIRE([AC_PROG_CC])
+    AC_REQUIRE([gt_LOCALE_FR])
+    AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+    dnl Cygwin 1.7.2 btowc('\0') is WEOF, not 0.
+    AC_CACHE_CHECK([whether btowc(0) is correct],
+      [gl_cv_func_btowc_nul],
+      [
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <wchar.h>
+int main ()
+{
+  if (btowc ('\0') != 0)
+    return 1;
+  return 0;
+}]])],
+          [gl_cv_func_btowc_nul=yes],
+          [gl_cv_func_btowc_nul=no],
+          [
+changequote(,)dnl
+           case "$host_os" in
+                      # Guess no on Cygwin.
+             cygwin*) gl_cv_func_btowc_nul="guessing no" ;;
+                      # Guess yes on native Windows.
+             mingw*)  gl_cv_func_btowc_nul="guessing yes" ;;
+                      # Guess yes otherwise.
+             *)       gl_cv_func_btowc_nul="guessing yes" ;;
+           esac
+changequote([,])dnl
+          ])
+      ])
+
+    dnl IRIX 6.5 btowc(EOF) is 0xFF, not WEOF.
+    AC_CACHE_CHECK([whether btowc(EOF) is correct],
+      [gl_cv_func_btowc_eof],
+      [
+        dnl Initial guess, used when cross-compiling or when no suitable locale
+        dnl is present.
+changequote(,)dnl
+        case "$host_os" in
+                  # Guess no on IRIX.
+          irix*)  gl_cv_func_btowc_eof="guessing no" ;;
+                  # Guess yes on native Windows.
+          mingw*) gl_cv_func_btowc_eof="guessing yes" ;;
+                  # Guess yes otherwise.
+          *)      gl_cv_func_btowc_eof="guessing yes" ;;
+        esac
+changequote([,])dnl
+        if test $LOCALE_FR != none; then
+          AC_RUN_IFELSE(
+            [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <stdio.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+    {
+      if (btowc (EOF) != WEOF)
+        return 1;
+    }
+  return 0;
+}]])],
+            [gl_cv_func_btowc_eof=yes],
+            [gl_cv_func_btowc_eof=no],
+            [:])
+        fi
+      ])
+
+    case "$gl_cv_func_btowc_nul" in
+      *yes) ;;
+      *) REPLACE_BTOWC=1 ;;
+    esac
+    case "$gl_cv_func_btowc_eof" in
+      *yes) ;;
+      *) REPLACE_BTOWC=1 ;;
+    esac
+  fi
+])
+
+# Prerequisites of lib/btowc.c.
+AC_DEFUN([gl_PREREQ_BTOWC], [
+  :
+])
diff --git a/src/grep/m4/builtin-expect.m4 b/src/grep/m4/builtin-expect.m4
new file mode 100644
index 0000000..c584116
--- /dev/null
+++ b/src/grep/m4/builtin-expect.m4
@@ -0,0 +1,49 @@
+dnl Check for __builtin_expect.
+
+dnl Copyright 2016-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Paul Eggert.
+
+AC_DEFUN([gl___BUILTIN_EXPECT],
+[
+  AC_CACHE_CHECK([for __builtin_expect],
+    [gl_cv___builtin_expect],
+    [AC_LINK_IFELSE(
+       [AC_LANG_SOURCE([[
+         int
+         main (int argc, char **argv)
+         {
+           argc = __builtin_expect (argc, 100);
+           return argv[argc != 100][0];
+         }]])],
+       [gl_cv___builtin_expect=yes],
+       [AC_LINK_IFELSE(
+          [AC_LANG_SOURCE([[
+             #include <builtins.h>
+             int
+             main (int argc, char **argv)
+             {
+               argc = __builtin_expect (argc, 100);
+               return argv[argc != 100][0];
+             }]])],
+          [gl_cv___builtin_expect="in <builtins.h>"],
+          [gl_cv___builtin_expect=no])])])
+  if test "$gl_cv___builtin_expect" = yes; then
+    AC_DEFINE([HAVE___BUILTIN_EXPECT], [1])
+  elif test "$gl_cv___builtin_expect" = "in <builtins.h>"; then
+    AC_DEFINE([HAVE___BUILTIN_EXPECT], [2])
+  fi
+  AH_VERBATIM([HAVE___BUILTIN_EXPECT],
+    [/* Define to 1 if the compiler supports __builtin_expect,
+   and to 2 if <builtins.h> does.  */
+#undef HAVE___BUILTIN_EXPECT
+#ifndef HAVE___BUILTIN_EXPECT
+# define __builtin_expect(e, c) (e)
+#elif HAVE___BUILTIN_EXPECT == 2
+# include <builtins.h>
+#endif
+    ])
+])
diff --git a/src/grep/m4/c-stack.m4 b/src/grep/m4/c-stack.m4
new file mode 100644
index 0000000..7cccb06
--- /dev/null
+++ b/src/grep/m4/c-stack.m4
@@ -0,0 +1,21 @@
+# Check prerequisites for compiling lib/c-stack.c.
+
+# Copyright (C) 2002-2004, 2008-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Written by Paul Eggert.
+
+# serial 23
+
+AC_DEFUN([gl_C_STACK],
+[
+  dnl 'c-stack' needs -lsigsegv if and only if the 'sigsegv' module needs it.
+  if test "$with_libsigsegv" = yes; then
+    if test "$gl_cv_lib_sigsegv" = yes; then
+      AC_SUBST([LIBCSTACK], [$LIBSIGSEGV])
+      AC_SUBST([LTLIBCSTACK], [$LTLIBSIGSEGV])
+    fi
+  fi
+])
diff --git a/src/grep/m4/calloc.m4 b/src/grep/m4/calloc.m4
new file mode 100644
index 0000000..fe12b15
--- /dev/null
+++ b/src/grep/m4/calloc.m4
@@ -0,0 +1,82 @@
+# calloc.m4 serial 27
+
+# Copyright (C) 2004-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Written by Jim Meyering.
+
+# Determine whether calloc (N, S) returns non-NULL when N*S is zero,
+# and returns NULL when N*S overflows.
+# If so, define HAVE_CALLOC.  Otherwise, define calloc to rpl_calloc
+# and arrange to use a calloc wrapper function that does work in that case.
+
+# _AC_FUNC_CALLOC_IF([IF-WORKS], [IF-NOT])
+# -------------------------------------
+# If calloc is compatible with GNU calloc, run IF-WORKS, otherwise, IF-NOT.
+AC_DEFUN([_AC_FUNC_CALLOC_IF],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether calloc (0, n) and calloc (n, 0) return nonnull],
+    [ac_cv_func_calloc_0_nonnull],
+    [if test $cross_compiling != yes; then
+       ac_cv_func_calloc_0_nonnull=yes
+       AC_RUN_IFELSE(
+         [AC_LANG_PROGRAM(
+            [AC_INCLUDES_DEFAULT],
+            [[int result = 0;
+              char * volatile p = calloc (0, 0);
+              if (!p)
+                result |= 1;
+              free (p);
+              return result;
+            ]])],
+         [],
+         [ac_cv_func_calloc_0_nonnull=no])
+     else
+       case "$host_os" in
+                        # Guess yes on glibc systems.
+         *-gnu* | gnu*) ac_cv_func_calloc_0_nonnull="guessing yes" ;;
+                        # Guess yes on musl systems.
+         *-musl*)       ac_cv_func_calloc_0_nonnull="guessing yes" ;;
+                        # Guess yes on native Windows.
+         mingw*)        ac_cv_func_calloc_0_nonnull="guessing yes" ;;
+                        # If we don't know, obey --enable-cross-guesses.
+         *)             ac_cv_func_calloc_0_nonnull="$gl_cross_guess_normal" ;;
+       esac
+     fi
+    ])
+  AS_CASE([$ac_cv_func_calloc_0_nonnull], [*yes], [$1], [$2])
+])
+
+
+# gl_FUNC_CALLOC_GNU
+# ------------------
+# Replace calloc if it is not compatible with GNU libc.
+AC_DEFUN([gl_FUNC_CALLOC_GNU],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([gl_FUNC_CALLOC_POSIX])
+  if test $REPLACE_CALLOC = 0; then
+    _AC_FUNC_CALLOC_IF([], [REPLACE_CALLOC=1])
+  fi
+])# gl_FUNC_CALLOC_GNU
+
+# gl_FUNC_CALLOC_POSIX
+# --------------------
+# Test whether 'calloc' is POSIX compliant (sets errno to ENOMEM when it
+# fails, and doesn't mess up with ptrdiff_t or size_t overflow),
+# and replace calloc if it is not.
+AC_DEFUN([gl_FUNC_CALLOC_POSIX],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([gl_FUNC_MALLOC_POSIX])
+  if test $REPLACE_MALLOC = 1; then
+    REPLACE_CALLOC=1
+  fi
+  dnl Although in theory we should also test for size_t overflow,
+  dnl in practice testing for ptrdiff_t overflow suffices
+  dnl since PTRDIFF_MAX <= SIZE_MAX on all known Gnulib porting targets.
+  dnl A separate size_t test would slow down 'configure'.
+])
diff --git a/src/grep/m4/chdir-long.m4 b/src/grep/m4/chdir-long.m4
new file mode 100644
index 0000000..e5cd8df
--- /dev/null
+++ b/src/grep/m4/chdir-long.m4
@@ -0,0 +1,30 @@
+#serial 17
+
+# Use Gnulib's robust chdir function.
+# It can handle arbitrarily long directory names, which means
+# that when it is given the name of an existing directory, it
+# never fails with ENAMETOOLONG.
+# Arrange to compile chdir-long.c only on systems that define PATH_MAX.
+
+dnl Copyright (C) 2004-2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Written by Jim Meyering.
+
+AC_DEFUN([gl_FUNC_CHDIR_LONG],
+[
+  AC_REQUIRE([gl_PATHMAX_SNIPPET_PREREQ])
+  AC_CACHE_CHECK([whether this system supports file names of any length],
+    [gl_cv_have_unlimited_file_name_length],
+    [AC_EGREP_CPP([have_arbitrary_file_name_length_limit],
+                  gl_PATHMAX_SNIPPET[
+#ifdef PATH_MAX
+have_arbitrary_file_name_length_limit
+#endif],
+    [gl_cv_have_unlimited_file_name_length=no],
+    [gl_cv_have_unlimited_file_name_length=yes])])
+])
+
+AC_DEFUN([gl_PREREQ_CHDIR_LONG], [:])
diff --git a/src/grep/m4/close.m4 b/src/grep/m4/close.m4
new file mode 100644
index 0000000..77a5047
--- /dev/null
+++ b/src/grep/m4/close.m4
@@ -0,0 +1,35 @@
+# close.m4 serial 9
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_CLOSE],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  m4_ifdef([gl_MSVC_INVAL], [
+    AC_REQUIRE([gl_MSVC_INVAL])
+    if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+      REPLACE_CLOSE=1
+    fi
+  ])
+  m4_ifdef([gl_PREREQ_SYS_H_WINSOCK2], [
+    gl_PREREQ_SYS_H_WINSOCK2
+    if test $UNISTD_H_HAVE_WINSOCK2_H = 1; then
+      dnl Even if the 'socket' module is not used here, another part of the
+      dnl application may use it and pass file descriptors that refer to
+      dnl sockets to the close() function. So enable the support for sockets.
+      REPLACE_CLOSE=1
+    fi
+  ])
+  dnl Replace close() for supporting the gnulib-defined fchdir() function,
+  dnl to keep fchdir's bookkeeping up-to-date.
+  m4_ifdef([gl_FUNC_FCHDIR], [
+    if test $REPLACE_CLOSE = 0; then
+      gl_TEST_FCHDIR
+      if test $HAVE_FCHDIR = 0; then
+        REPLACE_CLOSE=1
+      fi
+    fi
+  ])
+])
diff --git a/src/grep/m4/closedir.m4 b/src/grep/m4/closedir.m4
new file mode 100644
index 0000000..fc55a21
--- /dev/null
+++ b/src/grep/m4/closedir.m4
@@ -0,0 +1,31 @@
+# closedir.m4 serial 6
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_CLOSEDIR],
+[
+  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  AC_CHECK_FUNCS([closedir])
+  if test $ac_cv_func_closedir = no; then
+    HAVE_CLOSEDIR=0
+  fi
+  dnl Replace closedir() for supporting the gnulib-defined fchdir() function,
+  dnl to keep fchdir's bookkeeping up-to-date.
+  m4_ifdef([gl_FUNC_FCHDIR], [
+    gl_TEST_FCHDIR
+    if test $HAVE_FCHDIR = 0; then
+      if test $HAVE_CLOSEDIR = 1; then
+        REPLACE_CLOSEDIR=1
+      fi
+    fi
+  ])
+  dnl Replace closedir() for supporting the gnulib-defined dirfd() function.
+  case $host_os,$HAVE_CLOSEDIR in
+    os2*,1)
+      REPLACE_CLOSEDIR=1;;
+  esac
+])
diff --git a/src/grep/m4/codeset.m4 b/src/grep/m4/codeset.m4
new file mode 100644
index 0000000..629f4ee
--- /dev/null
+++ b/src/grep/m4/codeset.m4
@@ -0,0 +1,24 @@
+# codeset.m4 serial 5 (gettext-0.18.2)
+dnl Copyright (C) 2000-2002, 2006, 2008-2014, 2016, 2019-2021 Free Software
+dnl Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([AM_LANGINFO_CODESET],
+[
+  AC_CACHE_CHECK([for nl_langinfo and CODESET], [am_cv_langinfo_codeset],
+    [AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <langinfo.h>]],
+          [[char* cs = nl_langinfo(CODESET); return !cs;]])],
+       [am_cv_langinfo_codeset=yes],
+       [am_cv_langinfo_codeset=no])
+    ])
+  if test $am_cv_langinfo_codeset = yes; then
+    AC_DEFINE([HAVE_LANGINFO_CODESET], [1],
+      [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
+  fi
+])
diff --git a/src/grep/m4/configmake.m4 b/src/grep/m4/configmake.m4
new file mode 100644
index 0000000..d4f20ee
--- /dev/null
+++ b/src/grep/m4/configmake.m4
@@ -0,0 +1,27 @@
+# configmake.m4 serial 4
+dnl Copyright (C) 2010-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_PREREQ([2.60])
+
+# gl_CONFIGMAKE_PREP
+# ------------------
+# Guarantee all of the standard directory variables, even when used with
+# autoconf 2.64 (runstatedir wasn't supported before 2.70) or
+# automake 1.11 (runstatedir isn't supported even in 1.16.1).
+AC_DEFUN([gl_CONFIGMAKE_PREP],
+[
+  if test "x$lispdir" = x; then
+    AC_SUBST([lispdir], ['${datarootdir}/emacs/site-lisp'])
+  fi
+  dnl Added in autoconf 2.70.
+  if test "x$runstatedir" = x; then
+    AC_SUBST([runstatedir], ['${localstatedir}/run'])
+  fi
+
+  dnl Automake 1.11 provides pkglibexecdir merely without AC_SUBST.
+  dnl This blind use of AC_SUBST is safe.
+  AC_SUBST([pkglibexecdir], ['${libexecdir}/${PACKAGE}'])
+])
diff --git a/src/grep/m4/ctype_h.m4 b/src/grep/m4/ctype_h.m4
new file mode 100644
index 0000000..efdae45
--- /dev/null
+++ b/src/grep/m4/ctype_h.m4
@@ -0,0 +1,47 @@
+# ctype_h.m4 serial 9
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_CTYPE_H],
+[
+  AC_REQUIRE([gl_CTYPE_H_DEFAULTS])
+
+  dnl <ctype.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_NEXT_HEADERS([ctype.h])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <ctype.h>
+    ]], [isblank])
+])
+
+# gl_CTYPE_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_CTYPE_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_CTYPE_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_CTYPE_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_CTYPE_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISBLANK])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_CTYPE_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_CTYPE_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_CTYPE_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_ISBLANK=1;   AC_SUBST([HAVE_ISBLANK])
+])
diff --git a/src/grep/m4/cycle-check.m4 b/src/grep/m4/cycle-check.m4
new file mode 100644
index 0000000..5293230
--- /dev/null
+++ b/src/grep/m4/cycle-check.m4
@@ -0,0 +1,7 @@
+#serial 7
+dnl Copyright (C) 2005-2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_CYCLE_CHECK], [:])
diff --git a/src/grep/m4/d-ino.m4 b/src/grep/m4/d-ino.m4
new file mode 100644
index 0000000..e4dcfeb
--- /dev/null
+++ b/src/grep/m4/d-ino.m4
@@ -0,0 +1,60 @@
+# serial 20
+
+dnl From Jim Meyering.
+dnl
+dnl Check whether struct dirent has a member named d_ino.
+dnl
+
+# Copyright (C) 1997, 1999-2001, 2003-2004, 2006-2007, 2009-2021 Free Software
+# Foundation, Inc.
+
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO],
+  [AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+   AC_CACHE_CHECK([for d_ino member in directory struct],
+                  [gl_cv_struct_dirent_d_ino],
+     [AC_RUN_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[#include <sys/types.h>
+             #include <sys/stat.h>
+             #include <dirent.h>
+           ]],
+           [[DIR *dp = opendir (".");
+             struct dirent *e;
+             struct stat st;
+             if (! dp)
+               return 1;
+             e = readdir (dp);
+             if (! e)
+               { closedir (dp); return 2; }
+             if (lstat (e->d_name, &st) != 0)
+               { closedir (dp); return 3; }
+             if (e->d_ino != st.st_ino)
+               { closedir (dp); return 4; }
+             closedir (dp);
+             return 0;
+           ]])],
+           [gl_cv_struct_dirent_d_ino=yes],
+           [gl_cv_struct_dirent_d_ino=no],
+           [case "$host_os" in
+                            # Guess yes on glibc systems with Linux kernel.
+              linux*-gnu*)  gl_cv_struct_dirent_d_ino="guessing yes" ;;
+                            # Guess yes on musl systems with Linux kernel.
+              linux*-musl*) gl_cv_struct_dirent_d_ino="guessing yes" ;;
+                            # Guess no on native Windows.
+              mingw*)       gl_cv_struct_dirent_d_ino="guessing no" ;;
+                            # If we don't know, obey --enable-cross-guesses.
+              *)            gl_cv_struct_dirent_d_ino="$gl_cross_guess_normal" ;;
+            esac
+           ])])
+   case "$gl_cv_struct_dirent_d_ino" in
+     *yes)
+       AC_DEFINE([D_INO_IN_DIRENT], [1],
+         [Define if struct dirent has a member d_ino that actually works.])
+       ;;
+   esac
+  ]
+)
diff --git a/src/grep/m4/d-type.m4 b/src/grep/m4/d-type.m4
new file mode 100644
index 0000000..534a59e
--- /dev/null
+++ b/src/grep/m4/d-type.m4
@@ -0,0 +1,32 @@
+# serial 12
+
+dnl From Jim Meyering.
+dnl
+dnl Check whether struct dirent has a member named d_type.
+dnl
+
+# Copyright (C) 1997, 1999-2004, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_CHECK_TYPE_STRUCT_DIRENT_D_TYPE],
+  [AC_CACHE_CHECK([for d_type member in directory struct],
+                  [gl_cv_struct_dirent_d_type],
+     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+#include <sys/types.h>
+#include <dirent.h>
+         ]],
+         [[struct dirent dp; dp.d_type = 0;]])],
+       [gl_cv_struct_dirent_d_type=yes],
+       [gl_cv_struct_dirent_d_type=no])
+     ]
+   )
+   if test $gl_cv_struct_dirent_d_type = yes; then
+     AC_DEFINE([HAVE_STRUCT_DIRENT_D_TYPE], [1],
+       [Define if there is a member named d_type in the struct describing
+        directory headers.])
+   fi
+  ]
+)
diff --git a/src/grep/m4/dirent_h.m4 b/src/grep/m4/dirent_h.m4
new file mode 100644
index 0000000..17e2a20
--- /dev/null
+++ b/src/grep/m4/dirent_h.m4
@@ -0,0 +1,79 @@
+# dirent_h.m4 serial 19
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Bruno Haible.
+
+AC_DEFUN_ONCE([gl_DIRENT_H],
+[
+  dnl Ensure to expand the default settings once only, before all statements
+  dnl that occur in other macros.
+  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+
+  dnl <dirent.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_CHECK_NEXT_HEADERS([dirent.h])
+  if test $ac_cv_header_dirent_h = yes; then
+    HAVE_DIRENT_H=1
+  else
+    HAVE_DIRENT_H=0
+  fi
+  AC_SUBST([HAVE_DIRENT_H])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <dirent.h>
+    ]], [alphasort closedir dirfd fdopendir opendir readdir rewinddir scandir])
+])
+
+# gl_DIRENT_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_DIRENT_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_DIRENT_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_DIRENT_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_DIRENT_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_UNISTD_H_REQUIRE_DEFAULTS dnl for REPLACE_FCHDIR
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OPENDIR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READDIR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REWINDDIR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CLOSEDIR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DIRFD])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FDOPENDIR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SCANDIR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ALPHASORT])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_DIRENT_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_DIRENT_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_OPENDIR=1;       AC_SUBST([HAVE_OPENDIR])
+  HAVE_READDIR=1;       AC_SUBST([HAVE_READDIR])
+  HAVE_REWINDDIR=1;     AC_SUBST([HAVE_REWINDDIR])
+  HAVE_CLOSEDIR=1;      AC_SUBST([HAVE_CLOSEDIR])
+  HAVE_DECL_DIRFD=1;    AC_SUBST([HAVE_DECL_DIRFD])
+  HAVE_DECL_FDOPENDIR=1;AC_SUBST([HAVE_DECL_FDOPENDIR])
+  HAVE_FDOPENDIR=1;     AC_SUBST([HAVE_FDOPENDIR])
+  HAVE_SCANDIR=1;       AC_SUBST([HAVE_SCANDIR])
+  HAVE_ALPHASORT=1;     AC_SUBST([HAVE_ALPHASORT])
+  REPLACE_OPENDIR=0;    AC_SUBST([REPLACE_OPENDIR])
+  REPLACE_CLOSEDIR=0;   AC_SUBST([REPLACE_CLOSEDIR])
+  REPLACE_DIRFD=0;      AC_SUBST([REPLACE_DIRFD])
+  REPLACE_FDOPENDIR=0;  AC_SUBST([REPLACE_FDOPENDIR])
+])
diff --git a/src/grep/m4/dirfd.m4 b/src/grep/m4/dirfd.m4
new file mode 100644
index 0000000..3c9ce5d
--- /dev/null
+++ b/src/grep/m4/dirfd.m4
@@ -0,0 +1,86 @@
+# serial 26   -*- Autoconf -*-
+
+dnl Find out how to get the file descriptor associated with an open DIR*.
+
+# Copyright (C) 2001-2006, 2008-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl From Jim Meyering
+
+AC_DEFUN([gl_FUNC_DIRFD],
+[
+  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  dnl Persuade glibc <dirent.h> to declare dirfd().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_CHECK_FUNCS([dirfd])
+  AC_CHECK_DECLS([dirfd], , ,
+    [[#include <sys/types.h>
+      #include <dirent.h>]])
+  if test $ac_cv_have_decl_dirfd = no; then
+    HAVE_DECL_DIRFD=0
+  fi
+
+  AC_CACHE_CHECK([whether dirfd is a macro],
+    [gl_cv_func_dirfd_macro],
+    [AC_EGREP_CPP([dirent_header_defines_dirfd], [
+#include <sys/types.h>
+#include <dirent.h>
+#ifdef dirfd
+ dirent_header_defines_dirfd
+#endif],
+       [gl_cv_func_dirfd_macro=yes],
+       [gl_cv_func_dirfd_macro=no])])
+
+  # Use the replacement if we have no function or macro with that name,
+  # or if OS/2 kLIBC whose dirfd() does not work.
+  # Replace only if the system declares dirfd already.
+  case $ac_cv_func_dirfd,$gl_cv_func_dirfd_macro,$host_os,$ac_cv_have_decl_dirfd in
+    no,no,*,yes | *,*,os2*,yes)
+      REPLACE_DIRFD=1
+      AC_DEFINE([REPLACE_DIRFD], [1],
+        [Define to 1 if gnulib's dirfd() replacement is used.]);;
+  esac
+])
+
+dnl Prerequisites of lib/dirfd.c.
+AC_DEFUN([gl_PREREQ_DIRFD],
+[
+  AC_CACHE_CHECK([how to get the file descriptor associated with an open DIR*],
+                 [gl_cv_sys_dir_fd_member_name],
+    [
+      dirfd_save_CFLAGS=$CFLAGS
+      for ac_expr in d_fd dd_fd; do
+
+        CFLAGS="$CFLAGS -DDIR_FD_MEMBER_NAME=$ac_expr"
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+           #include <sys/types.h>
+           #include <dirent.h>]],
+          [[DIR *dir_p = opendir("."); (void) dir_p->DIR_FD_MEMBER_NAME;]])],
+          [dir_fd_found=yes]
+        )
+        CFLAGS=$dirfd_save_CFLAGS
+        test "$dir_fd_found" = yes && break
+      done
+      test "$dir_fd_found" = yes || ac_expr=no_such_member
+
+      gl_cv_sys_dir_fd_member_name=$ac_expr
+    ]
+  )
+  if test $gl_cv_sys_dir_fd_member_name != no_such_member; then
+    AC_DEFINE_UNQUOTED([DIR_FD_MEMBER_NAME],
+      [$gl_cv_sys_dir_fd_member_name],
+      [the name of the file descriptor member of DIR])
+  fi
+  AH_VERBATIM([DIR_TO_FD],
+              [#ifdef DIR_FD_MEMBER_NAME
+# define DIR_TO_FD(Dir_p) ((Dir_p)->DIR_FD_MEMBER_NAME)
+#else
+# define DIR_TO_FD(Dir_p) -1
+#endif
+])
+])
diff --git a/src/grep/m4/double-slash-root.m4 b/src/grep/m4/double-slash-root.m4
new file mode 100644
index 0000000..c9bbcef
--- /dev/null
+++ b/src/grep/m4/double-slash-root.m4
@@ -0,0 +1,38 @@
+# double-slash-root.m4 serial 4   -*- Autoconf -*-
+dnl Copyright (C) 2006, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_DOUBLE_SLASH_ROOT],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CACHE_CHECK([whether // is distinct from /], [gl_cv_double_slash_root],
+    [ if test x"$cross_compiling" = xyes ; then
+        # When cross-compiling, there is no way to tell whether // is special
+        # short of a list of hosts.  However, the only known hosts to date
+        # that have a distinct // are Apollo DomainOS (too old to port to),
+        # Cygwin, and z/OS.  If anyone knows of another system for which // has
+        # special semantics and is distinct from /, please report it to
+        # <bug-gnulib@gnu.org>.
+        case $host in
+          *-cygwin | i370-ibm-openedition)
+            gl_cv_double_slash_root=yes ;;
+          *)
+            # Be optimistic and assume that / and // are the same when we
+            # don't know.
+            gl_cv_double_slash_root='unknown, assuming no' ;;
+        esac
+      else
+        set x `ls -di / // 2>/dev/null`
+        if test "$[2]" = "$[4]" && wc //dev/null >/dev/null 2>&1; then
+          gl_cv_double_slash_root=no
+        else
+          gl_cv_double_slash_root=yes
+        fi
+      fi])
+  if test "$gl_cv_double_slash_root" = yes; then
+    AC_DEFINE([DOUBLE_SLASH_IS_DISTINCT_ROOT], [1],
+      [Define to 1 if // is a file system root distinct from /.])
+  fi
+])
diff --git a/src/grep/m4/dup.m4 b/src/grep/m4/dup.m4
new file mode 100644
index 0000000..433a466
--- /dev/null
+++ b/src/grep/m4/dup.m4
@@ -0,0 +1,54 @@
+# dup.m4 serial 7
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_DUP],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  m4_ifdef([gl_MSVC_INVAL], [
+    AC_REQUIRE([gl_MSVC_INVAL])
+    if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+      REPLACE_DUP=1
+    fi
+  ])
+  dnl Replace dup() for supporting the gnulib-defined fchdir() function,
+  dnl to keep fchdir's bookkeeping up-to-date.
+  m4_ifdef([gl_FUNC_FCHDIR], [
+    gl_TEST_FCHDIR
+    if test $HAVE_FCHDIR = 0; then
+      REPLACE_DUP=1
+    fi
+  ])
+  AC_CACHE_CHECK([whether dup works], [gl_cv_func_dup_works],
+    [AC_RUN_IFELSE(
+      [AC_LANG_PROGRAM([[#include <unistd.h>
+                         #include <fcntl.h>
+                         #include <errno.h>
+                       ]GL_MDA_DEFINES],
+         [[/* On OS/2 kLIBC, dup does not work on a directory fd.  */
+           int fd = open (".", O_RDONLY);
+           return fd < 0 ? 1 : dup (fd) < 0 ? 2 : 0;
+         ]])
+      ],
+      [gl_cv_func_dup_works=yes],
+      [gl_cv_func_dup_works=no],
+      [case "$host_os" in
+                 # Guess no on native Windows.
+         mingw*) gl_cv_func_dup_works="guessing no" ;;
+         *)      gl_cv_func_dup_works="guessing yes" ;;
+       esac
+      ])
+    ])
+  case "$gl_cv_func_dup_works" in
+    *yes) ;;
+    *)
+      REPLACE_DUP=1
+      ;;
+  esac
+])
+
+# Prerequisites of lib/dup.c.
+AC_DEFUN([gl_PREREQ_DUP], [:])
diff --git a/src/grep/m4/dup2.m4 b/src/grep/m4/dup2.m4
new file mode 100644
index 0000000..0753a32
--- /dev/null
+++ b/src/grep/m4/dup2.m4
@@ -0,0 +1,105 @@
+#serial 27
+dnl Copyright (C) 2002, 2005, 2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_DUP2],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CACHE_CHECK([whether dup2 works], [gl_cv_func_dup2_works],
+    [AC_RUN_IFELSE([
+       AC_LANG_PROGRAM(
+         [[#include <errno.h>
+           #include <fcntl.h>
+           #include <limits.h>
+           #include <sys/resource.h>
+           #include <unistd.h>
+           ]GL_MDA_DEFINES[
+           #ifndef RLIM_SAVED_CUR
+           # define RLIM_SAVED_CUR RLIM_INFINITY
+           #endif
+           #ifndef RLIM_SAVED_MAX
+           # define RLIM_SAVED_MAX RLIM_INFINITY
+           #endif
+         ]],
+         [[int result = 0;
+           int bad_fd = INT_MAX;
+           struct rlimit rlim;
+           if (getrlimit (RLIMIT_NOFILE, &rlim) == 0
+               && 0 <= rlim.rlim_cur && rlim.rlim_cur <= INT_MAX
+               && rlim.rlim_cur != RLIM_INFINITY
+               && rlim.rlim_cur != RLIM_SAVED_MAX
+               && rlim.rlim_cur != RLIM_SAVED_CUR)
+             bad_fd = rlim.rlim_cur;
+           #ifdef FD_CLOEXEC
+             if (fcntl (1, F_SETFD, FD_CLOEXEC) == -1)
+               result |= 1;
+           #endif
+           if (dup2 (1, 1) != 1)
+             result |= 2;
+           #ifdef FD_CLOEXEC
+             if (fcntl (1, F_GETFD) != FD_CLOEXEC)
+               result |= 4;
+           #endif
+           close (0);
+           if (dup2 (0, 0) != -1)
+             result |= 8;
+           /* Many gnulib modules require POSIX conformance of EBADF.  */
+           if (dup2 (2, bad_fd) == -1 && errno != EBADF)
+             result |= 16;
+           /* Flush out some cygwin core dumps.  */
+           if (dup2 (2, -1) != -1 || errno != EBADF)
+             result |= 32;
+           dup2 (2, 255);
+           dup2 (2, 256);
+           /* On OS/2 kLIBC, dup2() does not work on a directory fd.  */
+           {
+             int fd = open (".", O_RDONLY);
+             if (fd == -1)
+               result |= 64;
+             else if (dup2 (fd, fd + 1) == -1)
+               result |= 128;
+             close (fd);
+           }
+           return result;]])
+      ],
+      [gl_cv_func_dup2_works=yes], [gl_cv_func_dup2_works=no],
+      [case "$host_os" in
+         mingw*) # on this platform, dup2 always returns 0 for success
+           gl_cv_func_dup2_works="guessing no" ;;
+         cygwin*) # on cygwin 1.5.x, dup2(1,1) returns 0
+           gl_cv_func_dup2_works="guessing no" ;;
+         aix* | freebsd*)
+                 # on AIX 7.1 and FreeBSD 6.1, dup2 (1,toobig) gives EMFILE,
+                 # not EBADF.
+           gl_cv_func_dup2_works="guessing no" ;;
+         haiku*) # on Haiku alpha 2, dup2(1, 1) resets FD_CLOEXEC.
+           gl_cv_func_dup2_works="guessing no" ;;
+         *-android*) # implemented using dup3(), which fails if oldfd == newfd
+           gl_cv_func_dup2_works="guessing no" ;;
+         os2*) # on OS/2 kLIBC, dup2() does not work on a directory fd.
+           gl_cv_func_dup2_works="guessing no" ;;
+         *) gl_cv_func_dup2_works="guessing yes" ;;
+       esac])
+    ])
+  case "$gl_cv_func_dup2_works" in
+    *yes) ;;
+    *)
+      REPLACE_DUP2=1
+      AC_CHECK_FUNCS([setdtablesize])
+      ;;
+  esac
+  dnl Replace dup2() for supporting the gnulib-defined fchdir() function,
+  dnl to keep fchdir's bookkeeping up-to-date.
+  m4_ifdef([gl_FUNC_FCHDIR], [
+    gl_TEST_FCHDIR
+    if test $HAVE_FCHDIR = 0; then
+      REPLACE_DUP2=1
+    fi
+  ])
+])
+
+# Prerequisites of lib/dup2.c.
+AC_DEFUN([gl_PREREQ_DUP2], [])
diff --git a/src/grep/m4/eealloc.m4 b/src/grep/m4/eealloc.m4
new file mode 100644
index 0000000..002f0c8
--- /dev/null
+++ b/src/grep/m4/eealloc.m4
@@ -0,0 +1,31 @@
+# eealloc.m4 serial 3
+dnl Copyright (C) 2003, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_EEALLOC],
+[
+  AC_REQUIRE([gl_EEMALLOC])
+  AC_REQUIRE([gl_EEREALLOC])
+])
+
+AC_DEFUN([gl_EEMALLOC],
+[
+  _AC_FUNC_MALLOC_IF(
+    [gl_cv_func_malloc_0_nonnull=1],
+    [gl_cv_func_malloc_0_nonnull=0])
+  AC_DEFINE_UNQUOTED([MALLOC_0_IS_NONNULL], [$gl_cv_func_malloc_0_nonnull],
+    [If malloc(0) is != NULL, define this to 1.  Otherwise define this
+     to 0.])
+])
+
+AC_DEFUN([gl_EEREALLOC],
+[
+  _AC_FUNC_REALLOC_IF(
+    [gl_cv_func_realloc_0_nonnull=1],
+    [gl_cv_func_realloc_0_nonnull=0])
+  AC_DEFINE_UNQUOTED([REALLOC_0_IS_NONNULL], [$gl_cv_func_realloc_0_nonnull],
+    [If realloc(NULL,0) is != NULL, define this to 1.  Otherwise define this
+     to 0.])
+])
diff --git a/src/grep/m4/environ.m4 b/src/grep/m4/environ.m4
new file mode 100644
index 0000000..ae53291
--- /dev/null
+++ b/src/grep/m4/environ.m4
@@ -0,0 +1,46 @@
+# environ.m4 serial 8
+dnl Copyright (C) 2001-2004, 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_ENVIRON],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  dnl Persuade glibc <unistd.h> to declare environ.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  AC_CHECK_HEADERS_ONCE([unistd.h])
+  gt_CHECK_VAR_DECL(
+    [#if HAVE_UNISTD_H
+     #include <unistd.h>
+     #endif
+     /* mingw, BeOS, Haiku declare environ in <stdlib.h>, not in <unistd.h>.  */
+     #include <stdlib.h>
+    ],
+    [environ])
+  if test $gt_cv_var_environ_declaration != yes; then
+    HAVE_DECL_ENVIRON=0
+  fi
+])
+
+# Check if a variable is properly declared.
+# gt_CHECK_VAR_DECL(includes,variable)
+AC_DEFUN([gt_CHECK_VAR_DECL],
+[
+  define([gt_cv_var], [gt_cv_var_]$2[_declaration])
+  AC_CACHE_CHECK([if $2 is properly declared], [gt_cv_var],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[$1
+            typedef struct { int foo; } foo_t;
+            extern foo_t $2;]],
+          [[$2.foo = 1;]])],
+       [gt_cv_var=no],
+       [gt_cv_var=yes])])
+  if test $gt_cv_var = yes; then
+    AC_DEFINE([HAVE_]m4_translit($2, [a-z], [A-Z])[_DECL], 1,
+              [Define if you have the declaration of $2.])
+  fi
+  undefine([gt_cv_var])
+])
diff --git a/src/grep/m4/errno_h.m4 b/src/grep/m4/errno_h.m4
new file mode 100644
index 0000000..51dfe92
--- /dev/null
+++ b/src/grep/m4/errno_h.m4
@@ -0,0 +1,133 @@
+# errno_h.m4 serial 13
+dnl Copyright (C) 2004, 2006, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_PREREQ([2.61])
+
+AC_DEFUN_ONCE([gl_HEADER_ERRNO_H],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_CACHE_CHECK([for complete errno.h], [gl_cv_header_errno_h_complete], [
+    AC_EGREP_CPP([booboo],[
+#include <errno.h>
+#if !defined ETXTBSY
+booboo
+#endif
+#if !defined ENOMSG
+booboo
+#endif
+#if !defined EIDRM
+booboo
+#endif
+#if !defined ENOLINK
+booboo
+#endif
+#if !defined EPROTO
+booboo
+#endif
+#if !defined EMULTIHOP
+booboo
+#endif
+#if !defined EBADMSG
+booboo
+#endif
+#if !defined EOVERFLOW
+booboo
+#endif
+#if !defined ENOTSUP
+booboo
+#endif
+#if !defined ENETRESET
+booboo
+#endif
+#if !defined ECONNABORTED
+booboo
+#endif
+#if !defined ESTALE
+booboo
+#endif
+#if !defined EDQUOT
+booboo
+#endif
+#if !defined ECANCELED
+booboo
+#endif
+#if !defined EOWNERDEAD
+booboo
+#endif
+#if !defined ENOTRECOVERABLE
+booboo
+#endif
+#if !defined EILSEQ
+booboo
+#endif
+      ],
+      [gl_cv_header_errno_h_complete=no],
+      [gl_cv_header_errno_h_complete=yes])
+  ])
+  if test $gl_cv_header_errno_h_complete = yes; then
+    ERRNO_H=''
+  else
+    gl_NEXT_HEADERS([errno.h])
+    ERRNO_H='errno.h'
+  fi
+  AC_SUBST([ERRNO_H])
+  AM_CONDITIONAL([GL_GENERATE_ERRNO_H], [test -n "$ERRNO_H"])
+  gl_REPLACE_ERRNO_VALUE([EMULTIHOP])
+  gl_REPLACE_ERRNO_VALUE([ENOLINK])
+  gl_REPLACE_ERRNO_VALUE([EOVERFLOW])
+])
+
+# Assuming $1 = EOVERFLOW.
+# The EOVERFLOW errno value ought to be defined in <errno.h>, according to
+# POSIX.  But some systems (like OpenBSD 4.0 or AIX 3) don't define it, and
+# some systems (like OSF/1) define it when _XOPEN_SOURCE_EXTENDED is defined.
+# Check for the value of EOVERFLOW.
+# Set the variables EOVERFLOW_HIDDEN and EOVERFLOW_VALUE.
+AC_DEFUN([gl_REPLACE_ERRNO_VALUE],
+[
+  if test -n "$ERRNO_H"; then
+    AC_CACHE_CHECK([for ]$1[ value], [gl_cv_header_errno_h_]$1, [
+      AC_EGREP_CPP([yes],[
+#include <errno.h>
+#ifdef ]$1[
+yes
+#endif
+      ],
+      [gl_cv_header_errno_h_]$1[=yes],
+      [gl_cv_header_errno_h_]$1[=no])
+      if test $gl_cv_header_errno_h_]$1[ = no; then
+        AC_EGREP_CPP([yes],[
+#define _XOPEN_SOURCE_EXTENDED 1
+#include <errno.h>
+#ifdef ]$1[
+yes
+#endif
+          ], [gl_cv_header_errno_h_]$1[=hidden])
+        if test $gl_cv_header_errno_h_]$1[ = hidden; then
+          dnl The macro exists but is hidden.
+          dnl Define it to the same value.
+          AC_COMPUTE_INT([gl_cv_header_errno_h_]$1, $1, [
+#define _XOPEN_SOURCE_EXTENDED 1
+#include <errno.h>
+/* The following two lines are a workaround against an autoconf-2.52 bug.  */
+#include <stdio.h>
+#include <stdlib.h>
+])
+        fi
+      fi
+    ])
+    case $gl_cv_header_errno_h_]$1[ in
+      yes | no)
+        ]$1[_HIDDEN=0; ]$1[_VALUE=
+        ;;
+      *)
+        ]$1[_HIDDEN=1; ]$1[_VALUE="$gl_cv_header_errno_h_]$1["
+        ;;
+    esac
+    AC_SUBST($1[_HIDDEN])
+    AC_SUBST($1[_VALUE])
+  fi
+])
diff --git a/src/grep/m4/error.m4 b/src/grep/m4/error.m4
new file mode 100644
index 0000000..77f67f7
--- /dev/null
+++ b/src/grep/m4/error.m4
@@ -0,0 +1,27 @@
+#serial 14
+
+# Copyright (C) 1996-1998, 2001-2004, 2009-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_ERROR],
+[
+  dnl We don't use AC_FUNC_ERROR_AT_LINE any more, because it is no longer
+  dnl maintained in Autoconf and because it invokes AC_LIBOBJ.
+  AC_CACHE_CHECK([for error_at_line], [ac_cv_lib_error_at_line],
+    [AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <error.h>]],
+          [[error_at_line (0, 0, "", 0, "an error occurred");]])],
+       [ac_cv_lib_error_at_line=yes],
+       [ac_cv_lib_error_at_line=no])])
+])
+
+# Prerequisites of lib/error.c.
+AC_DEFUN([gl_PREREQ_ERROR],
+[
+  AC_REQUIRE([AC_FUNC_STRERROR_R])
+  :
+])
diff --git a/src/grep/m4/exponentd.m4 b/src/grep/m4/exponentd.m4
new file mode 100644
index 0000000..fb136f4
--- /dev/null
+++ b/src/grep/m4/exponentd.m4
@@ -0,0 +1,116 @@
+# exponentd.m4 serial 3
+dnl Copyright (C) 2007-2008, 2010-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+AC_DEFUN([gl_DOUBLE_EXPONENT_LOCATION],
+[
+  AC_CACHE_CHECK([where to find the exponent in a 'double'],
+    [gl_cv_cc_double_expbit0],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <float.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#define NWORDS \
+  ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+typedef union { double value; unsigned int word[NWORDS]; } memory_double;
+static unsigned int ored_words[NWORDS];
+static unsigned int anded_words[NWORDS];
+static void add_to_ored_words (double x)
+{
+  memory_double m;
+  size_t i;
+  /* Clear it first, in case sizeof (double) < sizeof (memory_double).  */
+  memset (&m, 0, sizeof (memory_double));
+  m.value = x;
+  for (i = 0; i < NWORDS; i++)
+    {
+      ored_words[i] |= m.word[i];
+      anded_words[i] &= m.word[i];
+    }
+}
+int main ()
+{
+  size_t j;
+  FILE *fp = fopen ("conftest.out", "w");
+  if (fp == NULL)
+    return 1;
+  for (j = 0; j < NWORDS; j++)
+    anded_words[j] = ~ (unsigned int) 0;
+  add_to_ored_words (0.25);
+  add_to_ored_words (0.5);
+  add_to_ored_words (1.0);
+  add_to_ored_words (2.0);
+  add_to_ored_words (4.0);
+  /* Remove bits that are common (e.g. if representation of the first mantissa
+     bit is explicit).  */
+  for (j = 0; j < NWORDS; j++)
+    ored_words[j] &= ~anded_words[j];
+  /* Now find the nonzero word.  */
+  for (j = 0; j < NWORDS; j++)
+    if (ored_words[j] != 0)
+      break;
+  if (j < NWORDS)
+    {
+      size_t i;
+      for (i = j + 1; i < NWORDS; i++)
+        if (ored_words[i] != 0)
+          {
+            fprintf (fp, "unknown");
+            return (fclose (fp) != 0);
+          }
+      for (i = 0; ; i++)
+        if ((ored_words[j] >> i) & 1)
+          {
+            fprintf (fp, "word %d bit %d", (int) j, (int) i);
+            return (fclose (fp) != 0);
+          }
+    }
+  fprintf (fp, "unknown");
+  return (fclose (fp) != 0);
+}
+        ]])],
+        [gl_cv_cc_double_expbit0=`cat conftest.out`],
+        [gl_cv_cc_double_expbit0="unknown"],
+        [
+          dnl On ARM, there are two 'double' floating-point formats, used by
+          dnl different sets of instructions: The older FPA instructions assume
+          dnl that they are stored in big-endian word order, while the words
+          dnl (like integer types) are stored in little-endian byte order.
+          dnl The newer VFP instructions assume little-endian order
+          dnl consistently.
+          AC_EGREP_CPP([mixed_endianness], [
+#if defined arm || defined __arm || defined __arm__
+  mixed_endianness
+#endif
+            ],
+            [gl_cv_cc_double_expbit0="unknown"],
+            [
+              pushdef([AC_MSG_CHECKING],[:])dnl
+              pushdef([AC_MSG_RESULT],[:])dnl
+              pushdef([AC_MSG_RESULT_UNQUOTED],[:])dnl
+              AC_C_BIGENDIAN(
+                [gl_cv_cc_double_expbit0="word 0 bit 20"],
+                [gl_cv_cc_double_expbit0="word 1 bit 20"],
+                [gl_cv_cc_double_expbit0="unknown"])
+              popdef([AC_MSG_RESULT_UNQUOTED])dnl
+              popdef([AC_MSG_RESULT])dnl
+              popdef([AC_MSG_CHECKING])dnl
+            ])
+        ])
+      rm -f conftest.out
+    ])
+  case "$gl_cv_cc_double_expbit0" in
+    word*bit*)
+      word=`echo "$gl_cv_cc_double_expbit0" | sed -e 's/word //' -e 's/ bit.*//'`
+      bit=`echo "$gl_cv_cc_double_expbit0" | sed -e 's/word.*bit //'`
+      AC_DEFINE_UNQUOTED([DBL_EXPBIT0_WORD], [$word],
+        [Define as the word index where to find the exponent of 'double'.])
+      AC_DEFINE_UNQUOTED([DBL_EXPBIT0_BIT], [$bit],
+        [Define as the bit index in the word where to find bit 0 of the exponent of 'double'.])
+      ;;
+  esac
+])
diff --git a/src/grep/m4/extensions.m4 b/src/grep/m4/extensions.m4
new file mode 100644
index 0000000..5792a95
--- /dev/null
+++ b/src/grep/m4/extensions.m4
@@ -0,0 +1,227 @@
+# serial 22  -*- Autoconf -*-
+# Enable extensions on systems that normally disable them.
+
+# Copyright (C) 2003, 2006-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl Define to empty for the benefit of Autoconf 2.69 and earlier, so that
+dnl AC_USE_SYSTEM_EXTENSIONS (below) can be used unchanged from Autoconf 2.70+.
+m4_ifndef([AC_CHECK_INCLUDES_DEFAULT],
+  [AC_DEFUN([AC_CHECK_INCLUDES_DEFAULT], [])])
+
+# This definition of AC_USE_SYSTEM_EXTENSIONS is stolen from git
+# Autoconf.  Perhaps we can remove this once we can assume Autoconf
+# is recent-enough everywhere, but since Autoconf mutates rapidly
+# enough in this area it's likely we'll need to redefine
+# AC_USE_SYSTEM_EXTENSIONS for quite some time.
+
+# If autoconf reports a warning
+#     warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
+# or  warning: AC_RUN_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
+# the fix is
+#   1) to ensure that AC_USE_SYSTEM_EXTENSIONS is never directly invoked
+#      but always AC_REQUIREd,
+#   2) to ensure that for each occurrence of
+#        AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+#      or
+#        AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+#      the corresponding gnulib module description has 'extensions' among
+#      its dependencies. This will ensure that the gl_USE_SYSTEM_EXTENSIONS
+#      invocation occurs in gl_EARLY, not in gl_INIT.
+
+m4_version_prereq([2.70.1], [], [
+
+# AC_USE_SYSTEM_EXTENSIONS
+# ------------------------
+# Enable extensions on systems that normally disable them,
+# typically due to standards-conformance issues.
+# We unconditionally define as many of the known feature-enabling
+# as possible, reserving conditional behavior for macros that are
+# known to cause problems on some platforms (such as __EXTENSIONS__).
+AC_DEFUN_ONCE([AC_USE_SYSTEM_EXTENSIONS],
+[AC_BEFORE([$0], [AC_PREPROC_IFELSE])dnl
+AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
+AC_BEFORE([$0], [AC_LINK_IFELSE])dnl
+AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
+AC_BEFORE([$0], [AC_CHECK_INCLUDES_DEFAULT])dnl
+dnl #undef in AH_VERBATIM gets replaced with #define by AC_DEFINE.
+dnl Use a different key than __EXTENSIONS__, as that name broke existing
+dnl configure.ac when using autoheader 2.62.
+dnl The macros below are in alphabetical order ignoring leading _ or __
+dnl prefixes.
+AH_VERBATIM([USE_SYSTEM_EXTENSIONS],
+[/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable general extensions on macOS.  */
+#ifndef _DARWIN_C_SOURCE
+# undef _DARWIN_C_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable X/Open compliant socket functions that do not require linking
+   with -lxnet on HP-UX 11.11.  */
+#ifndef _HPUX_ALT_XOPEN_SOCKET_API
+# undef _HPUX_ALT_XOPEN_SOCKET_API
+#endif
+/* Identify the host operating system as Minix.
+   This macro does not affect the system headers' behavior.
+   A future release of Autoconf may stop defining this macro.  */
+#ifndef _MINIX
+# undef _MINIX
+#endif
+/* Enable general extensions on NetBSD.
+   Enable NetBSD compatibility extensions on Minix.  */
+#ifndef _NETBSD_SOURCE
+# undef _NETBSD_SOURCE
+#endif
+/* Enable OpenBSD compatibility extensions on NetBSD.
+   Oddly enough, this does nothing on OpenBSD.  */
+#ifndef _OPENBSD_SOURCE
+# undef _OPENBSD_SOURCE
+#endif
+/* Define to 1 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_SOURCE
+# undef _POSIX_SOURCE
+#endif
+/* Define to 2 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_1_SOURCE
+# undef _POSIX_1_SOURCE
+#endif
+/* Enable POSIX-compatible threading on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-5:2014.  */
+#ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+# undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-1:2014.  */
+#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+# undef __STDC_WANT_IEC_60559_BFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-2:2015.  */
+#ifndef __STDC_WANT_IEC_60559_DFP_EXT__
+# undef __STDC_WANT_IEC_60559_DFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-4:2015.  */
+#ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__
+# undef __STDC_WANT_IEC_60559_FUNCS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-3:2015.  */
+#ifndef __STDC_WANT_IEC_60559_TYPES_EXT__
+# undef __STDC_WANT_IEC_60559_TYPES_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TR 24731-2:2010.  */
+#ifndef __STDC_WANT_LIB_EXT2__
+# undef __STDC_WANT_LIB_EXT2__
+#endif
+/* Enable extensions specified by ISO/IEC 24747:2009.  */
+#ifndef __STDC_WANT_MATH_SPEC_FUNCS__
+# undef __STDC_WANT_MATH_SPEC_FUNCS__
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable X/Open extensions.  Define to 500 only if necessary
+   to make mbstate_t available.  */
+#ifndef _XOPEN_SOURCE
+# undef _XOPEN_SOURCE
+#endif
+])dnl
+
+  AC_REQUIRE([AC_CHECK_INCLUDES_DEFAULT])dnl
+  _AC_CHECK_HEADER_ONCE([wchar.h])
+  _AC_CHECK_HEADER_ONCE([minix/config.h])
+
+dnl Defining __EXTENSIONS__ may break the system headers on some systems.
+dnl (FIXME: Which ones?)
+  AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__],
+    [ac_cv_safe_to_define___extensions__],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM([[
+#         define __EXTENSIONS__ 1
+          ]AC_INCLUDES_DEFAULT])],
+       [ac_cv_safe_to_define___extensions__=yes],
+       [ac_cv_safe_to_define___extensions__=no])])
+
+dnl HP-UX 11.11 defines mbstate_t only if _XOPEN_SOURCE is defined to
+dnl 500, regardless of whether compiling with -Ae or -D_HPUX_SOURCE=1.
+dnl But defining _XOPEN_SOURCE may turn *off* extensions on platforms
+dnl not covered by turn-on-extensions macros (notably Dragonfly, Free,
+dnl and OpenBSD, which don't have any equivalent of _NETBSD_SOURCE) so
+dnl it should only be defined when necessary.
+  AC_CACHE_CHECK([whether _XOPEN_SOURCE should be defined],
+    [ac_cv_should_define__xopen_source],
+    [ac_cv_should_define__xopen_source=no
+    AS_IF([test $ac_cv_header_wchar_h = yes],
+      [AC_COMPILE_IFELSE(
+        [AC_LANG_PROGRAM([[
+          #include <wchar.h>
+          mbstate_t x;]])],
+        [],
+        [AC_COMPILE_IFELSE(
+          [AC_LANG_PROGRAM([[
+            #define _XOPEN_SOURCE 500
+            #include <wchar.h>
+            mbstate_t x;]])],
+          [ac_cv_should_define__xopen_source=yes])])])])
+
+  AC_DEFINE([_ALL_SOURCE])
+  AC_DEFINE([_DARWIN_C_SOURCE])
+  AC_DEFINE([_GNU_SOURCE])
+  AC_DEFINE([_HPUX_ALT_XOPEN_SOCKET_API])
+  AC_DEFINE([_NETBSD_SOURCE])
+  AC_DEFINE([_OPENBSD_SOURCE])
+  AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
+  AC_DEFINE([__STDC_WANT_IEC_60559_ATTRIBS_EXT__])
+  AC_DEFINE([__STDC_WANT_IEC_60559_BFP_EXT__])
+  AC_DEFINE([__STDC_WANT_IEC_60559_DFP_EXT__])
+  AC_DEFINE([__STDC_WANT_IEC_60559_FUNCS_EXT__])
+  AC_DEFINE([__STDC_WANT_IEC_60559_TYPES_EXT__])
+  AC_DEFINE([__STDC_WANT_LIB_EXT2__])
+  AC_DEFINE([__STDC_WANT_MATH_SPEC_FUNCS__])
+  AC_DEFINE([_TANDEM_SOURCE])
+  AS_IF([test $ac_cv_header_minix_config_h = yes],
+    [MINIX=yes
+    AC_DEFINE([_MINIX])
+    AC_DEFINE([_POSIX_SOURCE])
+    AC_DEFINE([_POSIX_1_SOURCE], [2])],
+    [MINIX=])
+  AS_IF([test $ac_cv_safe_to_define___extensions__ = yes],
+    [AC_DEFINE([__EXTENSIONS__])])
+  AS_IF([test $ac_cv_should_define__xopen_source = yes],
+    [AC_DEFINE([_XOPEN_SOURCE], [500])])
+])# AC_USE_SYSTEM_EXTENSIONS
+])
+
+# gl_USE_SYSTEM_EXTENSIONS
+# ------------------------
+# Enable extensions on systems that normally disable them,
+# typically due to standards-conformance issues.
+AC_DEFUN_ONCE([gl_USE_SYSTEM_EXTENSIONS],
+[
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  dnl On OpenBSD 6.8 with GCC, the include files contain a couple of
+  dnl definitions that are only activated with an explicit -D_ISOC11_SOURCE.
+  dnl That's because this version of GCC (4.2.1) supports the option
+  dnl '-std=gnu99' but not the option '-std=gnu11'.
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    openbsd*)
+      AC_DEFINE([_ISOC11_SOURCE], [1],
+        [Define to enable the declarations of ISO C 11 types and functions.])
+      ;;
+  esac
+])
diff --git a/src/grep/m4/extern-inline.m4 b/src/grep/m4/extern-inline.m4
new file mode 100644
index 0000000..a2acf12
--- /dev/null
+++ b/src/grep/m4/extern-inline.m4
@@ -0,0 +1,114 @@
+dnl 'extern inline' a la ISO C99.
+
+dnl Copyright 2012-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_EXTERN_INLINE],
+[
+  AH_VERBATIM([extern_inline],
+[/* Please see the Gnulib manual for how to use these macros.
+
+   Suppress extern inline with HP-UX cc, as it appears to be broken; see
+   <https://lists.gnu.org/r/bug-texinfo/2013-02/msg00030.html>.
+
+   Suppress extern inline with Sun C in standards-conformance mode, as it
+   mishandles inline functions that call each other.  E.g., for 'inline void f
+   (void) { } inline void g (void) { f (); }', c99 incorrectly complains
+   'reference to static identifier "f" in extern inline function'.
+   This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16.
+
+   Suppress extern inline (with or without __attribute__ ((__gnu_inline__)))
+   on configurations that mistakenly use 'static inline' to implement
+   functions or macros in standard C headers like <ctype.h>.  For example,
+   if isdigit is mistakenly implemented via a static inline function,
+   a program containing an extern inline function that calls isdigit
+   may not work since the C standard prohibits extern inline functions
+   from calling static functions (ISO C 99 section 6.7.4.(3).
+   This bug is known to occur on:
+
+     OS X 10.8 and earlier; see:
+     https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html
+
+     DragonFly; see
+     http://muscles.dragonflybsd.org/bulk/clang-master-potential/20141111_102002/logs/ah-tty-0.3.12.log
+
+     FreeBSD; see:
+     https://lists.gnu.org/r/bug-gnulib/2014-07/msg00104.html
+
+   OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and
+   for clang but remains for g++; see <https://trac.macports.org/ticket/41033>.
+   Assume DragonFly and FreeBSD will be similar.
+
+   GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+   inline semantics, unless -fgnu89-inline is used.  It defines a macro
+   __GNUC_STDC_INLINE__ to indicate this situation or a macro
+   __GNUC_GNU_INLINE__ to indicate the opposite situation.
+   GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline
+   semantics but warns, unless -fgnu89-inline is used:
+     warning: C99 inline functions are not supported; using GNU89
+     warning: to disable this warning use -fgnu89-inline or the gnu_inline function attribute
+   It defines a macro __GNUC_GNU_INLINE__ to indicate this situation.
+ */
+#if (((defined __APPLE__ && defined __MACH__) \
+      || defined __DragonFly__ || defined __FreeBSD__) \
+     && (defined __header_inline \
+         ? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \
+            && ! defined __clang__) \
+         : ((! defined _DONT_USE_CTYPE_INLINE_ \
+             && (defined __GNUC__ || defined __cplusplus)) \
+            || (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \
+                && defined __GNUC__ && ! defined __cplusplus))))
+# define _GL_EXTERN_INLINE_STDHEADER_BUG
+#endif
+#if ((__GNUC__ \
+      ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \
+      : (199901L <= __STDC_VERSION__ \
+         && !defined __HP_cc \
+         && !defined __PGI \
+         && !(defined __SUNPRO_C && __STDC__))) \
+     && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+# define _GL_INLINE inline
+# define _GL_EXTERN_INLINE extern inline
+# define _GL_EXTERN_INLINE_IN_USE
+#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \
+       && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+# if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__
+   /* __gnu_inline__ suppresses a GCC 4.2 diagnostic.  */
+#  define _GL_INLINE extern inline __attribute__ ((__gnu_inline__))
+# else
+#  define _GL_INLINE extern inline
+# endif
+# define _GL_EXTERN_INLINE extern
+# define _GL_EXTERN_INLINE_IN_USE
+#else
+# define _GL_INLINE static _GL_UNUSED
+# define _GL_EXTERN_INLINE static _GL_UNUSED
+#endif
+
+/* In GCC 4.6 (inclusive) to 5.1 (exclusive),
+   suppress bogus "no previous prototype for 'FOO'"
+   and "no previous declaration for 'FOO'" diagnostics,
+   when FOO is an inline function in the header; see
+   <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113> and
+   <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63877>.  */
+#if __GNUC__ == 4 && 6 <= __GNUC_MINOR__
+# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__
+#  define _GL_INLINE_HEADER_CONST_PRAGMA
+# else
+#  define _GL_INLINE_HEADER_CONST_PRAGMA \
+     _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"")
+# endif
+# define _GL_INLINE_HEADER_BEGIN \
+    _Pragma ("GCC diagnostic push") \
+    _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \
+    _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \
+    _GL_INLINE_HEADER_CONST_PRAGMA
+# define _GL_INLINE_HEADER_END \
+    _Pragma ("GCC diagnostic pop")
+#else
+# define _GL_INLINE_HEADER_BEGIN
+# define _GL_INLINE_HEADER_END
+#endif])
+])
diff --git a/src/grep/m4/fchdir.m4 b/src/grep/m4/fchdir.m4
new file mode 100644
index 0000000..5d2fab7
--- /dev/null
+++ b/src/grep/m4/fchdir.m4
@@ -0,0 +1,68 @@
+# fchdir.m4 serial 26
+dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_FCHDIR],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  AC_CHECK_DECLS_ONCE([fchdir])
+  if test $ac_cv_have_decl_fchdir = no; then
+    HAVE_DECL_FCHDIR=0
+  fi
+
+  AC_REQUIRE([gl_TEST_FCHDIR])
+  if test $HAVE_FCHDIR = 0; then
+    AC_LIBOBJ([fchdir])
+    gl_PREREQ_FCHDIR
+    AC_DEFINE([REPLACE_FCHDIR], [1],
+      [Define to 1 if gnulib's fchdir() replacement is used.])
+    dnl We must also replace anything that can manipulate a directory fd,
+    dnl to keep our bookkeeping up-to-date.  We don't have to replace
+    dnl fstatat, since no platform has fstatat but lacks fchdir.
+    AC_CACHE_CHECK([whether open can visit directories],
+      [gl_cv_func_open_directory_works],
+      [AC_RUN_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <fcntl.h>
+            ]GL_MDA_DEFINES],
+            [[return open(".", O_RDONLY) < 0;]])],
+         [gl_cv_func_open_directory_works=yes],
+         [gl_cv_func_open_directory_works=no],
+         [case "$host_os" in
+                             # Guess yes on Linux systems.
+            linux-* | linux) gl_cv_func_open_directory_works="guessing yes" ;;
+                             # Guess yes on glibc systems.
+            *-gnu* | gnu*)   gl_cv_func_open_directory_works="guessing yes" ;;
+                             # Guess no on native Windows.
+            mingw*)          gl_cv_func_open_directory_works="guessing no" ;;
+                             # If we don't know, obey --enable-cross-guesses.
+            *)               gl_cv_func_open_directory_works="$gl_cross_guess_normal" ;;
+          esac
+         ])])
+    case "$gl_cv_func_open_directory_works" in
+      *yes) ;;
+      *)
+        AC_DEFINE([REPLACE_OPEN_DIRECTORY], [1], [Define to 1 if open() should
+work around the inability to open a directory.])
+        ;;
+    esac
+  fi
+])
+
+# Determine whether to use the overrides in lib/fchdir.c.
+AC_DEFUN([gl_TEST_FCHDIR],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_CHECK_FUNCS_ONCE([fchdir])
+  if test $ac_cv_func_fchdir = no; then
+    HAVE_FCHDIR=0
+  fi
+])
+
+# Prerequisites of lib/fchdir.c.
+AC_DEFUN([gl_PREREQ_FCHDIR], [:])
diff --git a/src/grep/m4/fcntl-o.m4 b/src/grep/m4/fcntl-o.m4
new file mode 100644
index 0000000..7c459ad
--- /dev/null
+++ b/src/grep/m4/fcntl-o.m4
@@ -0,0 +1,140 @@
+# fcntl-o.m4 serial 7
+dnl Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Paul Eggert.
+
+AC_PREREQ([2.60])
+
+# Test whether the flags O_NOATIME and O_NOFOLLOW actually work.
+# Define HAVE_WORKING_O_NOATIME to 1 if O_NOATIME works, or to 0 otherwise.
+# Define HAVE_WORKING_O_NOFOLLOW to 1 if O_NOFOLLOW works, or to 0 otherwise.
+AC_DEFUN([gl_FCNTL_O_FLAGS],
+[
+  dnl Persuade glibc <fcntl.h> to define O_NOATIME and O_NOFOLLOW.
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CHECK_HEADERS_ONCE([unistd.h])
+  AC_CHECK_FUNCS_ONCE([symlink])
+  AC_CACHE_CHECK([for working fcntl.h], [gl_cv_header_working_fcntl_h],
+    [AC_RUN_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <sys/types.h>
+           #include <sys/stat.h>
+           #if HAVE_UNISTD_H
+           # include <unistd.h>
+           #else /* on Windows with MSVC */
+           # include <io.h>
+           # include <stdlib.h>
+           # defined sleep(n) _sleep ((n) * 1000)
+           #endif
+           #include <fcntl.h>
+           ]GL_MDA_DEFINES[
+           #ifndef O_NOATIME
+            #define O_NOATIME 0
+           #endif
+           #ifndef O_NOFOLLOW
+            #define O_NOFOLLOW 0
+           #endif
+           static int const constants[] =
+            {
+              O_CREAT, O_EXCL, O_NOCTTY, O_TRUNC, O_APPEND,
+              O_NONBLOCK, O_SYNC, O_ACCMODE, O_RDONLY, O_RDWR, O_WRONLY
+            };
+          ]],
+          [[
+            int result = !constants;
+            #if HAVE_SYMLINK
+            {
+              static char const sym[] = "conftest.sym";
+              if (symlink ("/dev/null", sym) != 0)
+                result |= 2;
+              else
+                {
+                  int fd = open (sym, O_WRONLY | O_NOFOLLOW | O_CREAT, 0);
+                  if (fd >= 0)
+                    {
+                      close (fd);
+                      result |= 4;
+                    }
+                }
+              if (unlink (sym) != 0 || symlink (".", sym) != 0)
+                result |= 2;
+              else
+                {
+                  int fd = open (sym, O_RDONLY | O_NOFOLLOW);
+                  if (fd >= 0)
+                    {
+                      close (fd);
+                      result |= 4;
+                    }
+                }
+              unlink (sym);
+            }
+            #endif
+            {
+              static char const file[] = "confdefs.h";
+              int fd = open (file, O_RDONLY | O_NOATIME);
+              if (fd < 0)
+                result |= 8;
+              else
+                {
+                  struct stat st0;
+                  if (fstat (fd, &st0) != 0)
+                    result |= 16;
+                  else
+                    {
+                      char c;
+                      sleep (1);
+                      if (read (fd, &c, 1) != 1)
+                        result |= 24;
+                      else
+                        {
+                          if (close (fd) != 0)
+                            result |= 32;
+                          else
+                            {
+                              struct stat st1;
+                              if (stat (file, &st1) != 0)
+                                result |= 40;
+                              else
+                                if (st0.st_atime != st1.st_atime)
+                                  result |= 64;
+                            }
+                        }
+                    }
+                }
+            }
+            return result;]])],
+       [gl_cv_header_working_fcntl_h=yes],
+       [case $? in #(
+        4) gl_cv_header_working_fcntl_h='no (bad O_NOFOLLOW)';; #(
+        64) gl_cv_header_working_fcntl_h='no (bad O_NOATIME)';; #(
+        68) gl_cv_header_working_fcntl_h='no (bad O_NOATIME, O_NOFOLLOW)';; #(
+         *) gl_cv_header_working_fcntl_h='no';;
+        esac],
+       [case "$host_os" in
+                  # Guess 'no' on native Windows.
+          mingw*) gl_cv_header_working_fcntl_h='no' ;;
+          *)      gl_cv_header_working_fcntl_h=cross-compiling ;;
+        esac
+       ])
+    ])
+
+  case $gl_cv_header_working_fcntl_h in #(
+  *O_NOATIME* | no | cross-compiling) ac_val=0;; #(
+  *) ac_val=1;;
+  esac
+  AC_DEFINE_UNQUOTED([HAVE_WORKING_O_NOATIME], [$ac_val],
+    [Define to 1 if O_NOATIME works.])
+
+  case $gl_cv_header_working_fcntl_h in #(
+  *O_NOFOLLOW* | no | cross-compiling) ac_val=0;; #(
+  *) ac_val=1;;
+  esac
+  AC_DEFINE_UNQUOTED([HAVE_WORKING_O_NOFOLLOW], [$ac_val],
+    [Define to 1 if O_NOFOLLOW works.])
+])
diff --git a/src/grep/m4/fcntl-safer.m4 b/src/grep/m4/fcntl-safer.m4
new file mode 100644
index 0000000..0abd022
--- /dev/null
+++ b/src/grep/m4/fcntl-safer.m4
@@ -0,0 +1,16 @@
+#serial 9
+dnl Copyright (C) 2005-2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FCNTL_SAFER],
+[
+  dnl Prerequisites of lib/open-safer.c.
+  AC_REQUIRE([gl_PROMOTED_TYPE_MODE_T])
+])
+
+AC_DEFUN([gl_OPENAT_SAFER],
+[
+  AC_REQUIRE([gl_FCNTL_SAFER])
+])
diff --git a/src/grep/m4/fcntl.m4 b/src/grep/m4/fcntl.m4
new file mode 100644
index 0000000..f626434
--- /dev/null
+++ b/src/grep/m4/fcntl.m4
@@ -0,0 +1,151 @@
+# fcntl.m4 serial 11
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# For now, this module ensures that fcntl()
+# - supports F_DUPFD correctly
+# - supports or emulates F_DUPFD_CLOEXEC
+# - supports F_GETFD
+# Still to be ported to mingw:
+# - F_SETFD
+# - F_GETFL, F_SETFL
+# - F_GETOWN, F_SETOWN
+# - F_GETLK, F_SETLK, F_SETLKW
+AC_DEFUN([gl_FUNC_FCNTL],
+[
+  dnl Persuade glibc to expose F_DUPFD_CLOEXEC.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CHECK_FUNCS_ONCE([fcntl])
+  if test $ac_cv_func_fcntl = no; then
+    gl_REPLACE_FCNTL
+  else
+    dnl cygwin 1.5.x F_DUPFD has wrong errno, and allows negative target
+    dnl haiku alpha 2 F_DUPFD has wrong errno
+    AC_CACHE_CHECK([whether fcntl handles F_DUPFD correctly],
+      [gl_cv_func_fcntl_f_dupfd_works],
+      [AC_RUN_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <errno.h>
+              #include <fcntl.h>
+              #include <limits.h>
+              #include <sys/resource.h>
+              #include <unistd.h>
+              ]GL_MDA_DEFINES[
+              #ifndef RLIM_SAVED_CUR
+              # define RLIM_SAVED_CUR RLIM_INFINITY
+              #endif
+              #ifndef RLIM_SAVED_MAX
+              # define RLIM_SAVED_MAX RLIM_INFINITY
+              #endif
+            ]],
+            [[int result = 0;
+              int bad_fd = INT_MAX;
+              struct rlimit rlim;
+              if (getrlimit (RLIMIT_NOFILE, &rlim) == 0
+                  && 0 <= rlim.rlim_cur && rlim.rlim_cur <= INT_MAX
+                  && rlim.rlim_cur != RLIM_INFINITY
+                  && rlim.rlim_cur != RLIM_SAVED_MAX
+                  && rlim.rlim_cur != RLIM_SAVED_CUR)
+                bad_fd = rlim.rlim_cur;
+              if (fcntl (0, F_DUPFD, -1) != -1) result |= 1;
+              if (errno != EINVAL) result |= 2;
+              if (fcntl (0, F_DUPFD, bad_fd) != -1) result |= 4;
+              if (errno != EINVAL) result |= 8;
+              /* On OS/2 kLIBC, F_DUPFD does not work on a directory fd */
+              {
+                int fd;
+                fd = open (".", O_RDONLY);
+                if (fd == -1)
+                  result |= 16;
+                else if (fcntl (fd, F_DUPFD, STDERR_FILENO + 1) == -1)
+                  result |= 32;
+
+                close (fd);
+              }
+              return result;]])],
+         [gl_cv_func_fcntl_f_dupfd_works=yes],
+         [gl_cv_func_fcntl_f_dupfd_works=no],
+         [case $host_os in
+            aix* | cygwin* | haiku*)
+               gl_cv_func_fcntl_f_dupfd_works="guessing no" ;;
+            *) gl_cv_func_fcntl_f_dupfd_works="guessing yes" ;;
+          esac])])
+    case $gl_cv_func_fcntl_f_dupfd_works in
+      *yes) ;;
+      *) gl_REPLACE_FCNTL
+        AC_DEFINE([FCNTL_DUPFD_BUGGY], [1], [Define this to 1 if F_DUPFD
+          behavior does not match POSIX]) ;;
+    esac
+
+    dnl Many systems lack F_DUPFD_CLOEXEC.
+    dnl NetBSD 9.0 declares F_DUPFD_CLOEXEC but it works only like F_DUPFD.
+    AC_CACHE_CHECK([whether fcntl understands F_DUPFD_CLOEXEC],
+      [gl_cv_func_fcntl_f_dupfd_cloexec],
+      [AC_RUN_IFELSE(
+         [AC_LANG_SOURCE(
+            [[#include <fcntl.h>
+              #include <unistd.h>
+              int main (int argc, char *argv[])
+              {
+                if (argc == 1)
+                  /* parent process */
+                  {
+                    if (fcntl (1, F_DUPFD_CLOEXEC, 10) < 0)
+                      return 1;
+                    return execl ("./conftest", "./conftest", "child", NULL);
+                  }
+                else
+                  /* child process */
+                  return (fcntl (10, F_GETFL) < 0 ? 0 : 42);
+              }
+            ]])
+         ],
+         [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#ifdef __linux__
+/* The Linux kernel only added F_DUPFD_CLOEXEC in 2.6.24, so we always replace
+   it to support the semantics on older kernels that failed with EINVAL.  */
+choke me
+#endif
+           ]])],
+           [gl_cv_func_fcntl_f_dupfd_cloexec=yes],
+           [gl_cv_func_fcntl_f_dupfd_cloexec="needs runtime check"])
+         ],
+         [gl_cv_func_fcntl_f_dupfd_cloexec=no],
+         [case "$host_os" in
+                     # Guess no on NetBSD.
+            netbsd*) gl_cv_func_fcntl_f_dupfd_cloexec="guessing no" ;;
+            *)       gl_cv_func_fcntl_f_dupfd_cloexec="$gl_cross_guess_normal" ;;
+          esac
+         ])
+      ])
+    case "$gl_cv_func_fcntl_f_dupfd_cloexec" in
+      *yes) ;;
+      *)    gl_REPLACE_FCNTL
+            dnl No witness macro needed for this bug.
+            ;;
+    esac
+  fi
+  dnl Replace fcntl() for supporting the gnulib-defined fchdir() function,
+  dnl to keep fchdir's bookkeeping up-to-date.
+  m4_ifdef([gl_FUNC_FCHDIR], [
+    gl_TEST_FCHDIR
+    if test $HAVE_FCHDIR = 0; then
+      gl_REPLACE_FCNTL
+    fi
+  ])
+])
+
+AC_DEFUN([gl_REPLACE_FCNTL],
+[
+  AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
+  AC_CHECK_FUNCS_ONCE([fcntl])
+  if test $ac_cv_func_fcntl = no; then
+    HAVE_FCNTL=0
+  else
+    REPLACE_FCNTL=1
+  fi
+])
diff --git a/src/grep/m4/fcntl_h.m4 b/src/grep/m4/fcntl_h.m4
new file mode 100644
index 0000000..aba4473
--- /dev/null
+++ b/src/grep/m4/fcntl_h.m4
@@ -0,0 +1,70 @@
+# serial 20
+# Configure fcntl.h.
+dnl Copyright (C) 2006-2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Paul Eggert.
+
+AC_DEFUN_ONCE([gl_FCNTL_H],
+[
+  AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
+  AC_REQUIRE([gl_FCNTL_O_FLAGS])
+  gl_NEXT_HEADERS([fcntl.h])
+
+  dnl Ensure the type pid_t gets defined.
+  AC_REQUIRE([AC_TYPE_PID_T])
+
+  dnl Ensure the type mode_t gets defined.
+  AC_REQUIRE([AC_TYPE_MODE_T])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use, if it is not common
+  dnl enough to be declared everywhere.
+  gl_WARN_ON_USE_PREPARE([[#include <fcntl.h>
+    ]], [fcntl openat])
+])
+
+# gl_FCNTL_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_FCNTL_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_FCNTL_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_FCNTL_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_FCNTL_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CREAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCNTL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_NONBLOCKING])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OPEN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OPENAT])
+    dnl Support Microsoft deprecated alias function names by default.
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CREAT], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_OPEN], [1])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_FCNTL_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_FCNTL_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_FCNTL=1;          AC_SUBST([HAVE_FCNTL])
+  HAVE_OPENAT=1;         AC_SUBST([HAVE_OPENAT])
+  REPLACE_CREAT=0;       AC_SUBST([REPLACE_CREAT])
+  REPLACE_FCNTL=0;       AC_SUBST([REPLACE_FCNTL])
+  REPLACE_OPEN=0;        AC_SUBST([REPLACE_OPEN])
+  REPLACE_OPENAT=0;      AC_SUBST([REPLACE_OPENAT])
+])
diff --git a/src/grep/m4/fdopen.m4 b/src/grep/m4/fdopen.m4
new file mode 100644
index 0000000..e41ed63
--- /dev/null
+++ b/src/grep/m4/fdopen.m4
@@ -0,0 +1,51 @@
+# fdopen.m4 serial 5
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_FDOPEN],
+[
+  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  m4_ifdef([gl_MSVC_INVAL], [
+    AC_REQUIRE([gl_MSVC_INVAL])
+    if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+      REPLACE_FDOPEN=1
+    fi
+  ])
+  if test $REPLACE_FDOPEN = 0; then
+    dnl Test whether fdopen() sets errno when it fails due to a bad fd argument.
+    AC_CACHE_CHECK([whether fdopen sets errno], [gl_cv_func_fdopen_works],
+      [
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <errno.h>
+]GL_MDA_DEFINES[
+int
+main (void)
+{
+  FILE *fp;
+  errno = 0;
+  fp = fdopen (-1, "r");
+  if (fp == NULL && errno == 0)
+    return 1;
+  return 0;
+}]])],
+          [gl_cv_func_fdopen_works=yes],
+          [gl_cv_func_fdopen_works=no],
+          [case "$host_os" in
+             mingw*) gl_cv_func_fdopen_works="guessing no" ;;
+             *)      gl_cv_func_fdopen_works="guessing yes" ;;
+           esac
+          ])
+      ])
+    case "$gl_cv_func_fdopen_works" in
+      *no) REPLACE_FDOPEN=1 ;;
+    esac
+  fi
+])
+
+dnl Prerequisites of lib/fdopen.c.
+AC_DEFUN([gl_PREREQ_FDOPEN], [])
diff --git a/src/grep/m4/fdopendir.m4 b/src/grep/m4/fdopendir.m4
new file mode 100644
index 0000000..d428380
--- /dev/null
+++ b/src/grep/m4/fdopendir.m4
@@ -0,0 +1,67 @@
+# serial 14
+# See if we need to provide fdopendir.
+
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Written by Eric Blake.
+
+AC_DEFUN([gl_FUNC_FDOPENDIR],
+[
+  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  dnl FreeBSD 7.3 has the function, but failed to declare it.
+  AC_CHECK_DECLS([fdopendir], [], [HAVE_DECL_FDOPENDIR=0], [[
+#include <dirent.h>
+    ]])
+  AC_CHECK_FUNCS_ONCE([fdopendir])
+  if test $ac_cv_func_fdopendir = no; then
+    HAVE_FDOPENDIR=0
+  else
+    AC_CACHE_CHECK([whether fdopendir works],
+      [gl_cv_func_fdopendir_works],
+      [AC_RUN_IFELSE(
+         [AC_LANG_PROGRAM([[
+#include <dirent.h>
+#include <fcntl.h>
+#include <unistd.h>
+]GL_MDA_DEFINES[
+#if !HAVE_DECL_FDOPENDIR
+extern
+# ifdef __cplusplus
+"C"
+# endif
+DIR *fdopendir (int);
+#endif
+]],
+            [[int result = 0;
+              int fd = open ("conftest.c", O_RDONLY);
+              if (fd < 0) result |= 1;
+              if (fdopendir (fd)) result |= 2;
+              if (close (fd)) result |= 4;
+              return result;
+            ]])],
+         [gl_cv_func_fdopendir_works=yes],
+         [gl_cv_func_fdopendir_works=no],
+         [case "$host_os" in
+                     # Guess yes on glibc systems.
+            *-gnu*)  gl_cv_func_fdopendir_works="guessing yes" ;;
+                     # Guess yes on musl systems.
+            *-musl*) gl_cv_func_fdopendir_works="guessing yes" ;;
+                     # If we don't know, obey --enable-cross-guesses.
+            *)       gl_cv_func_fdopendir_works="$gl_cross_guess_normal" ;;
+          esac
+         ])])
+    case "$gl_cv_func_fdopendir_works" in
+      *yes) ;;
+      *)
+        REPLACE_FDOPENDIR=1
+        ;;
+    esac
+  fi
+])
diff --git a/src/grep/m4/filenamecat.m4 b/src/grep/m4/filenamecat.m4
new file mode 100644
index 0000000..e6eac12
--- /dev/null
+++ b/src/grep/m4/filenamecat.m4
@@ -0,0 +1,16 @@
+# filenamecat.m4 serial 11
+dnl Copyright (C) 2002-2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FILE_NAME_CONCAT],
+[
+  AC_REQUIRE([gl_FILE_NAME_CONCAT_LGPL])
+])
+
+AC_DEFUN([gl_FILE_NAME_CONCAT_LGPL],
+[
+  dnl Prerequisites of lib/filenamecat-lgpl.c.
+  AC_CHECK_FUNCS_ONCE([mempcpy])
+])
diff --git a/src/grep/m4/flexmember.m4 b/src/grep/m4/flexmember.m4
new file mode 100644
index 0000000..49b1c75
--- /dev/null
+++ b/src/grep/m4/flexmember.m4
@@ -0,0 +1,44 @@
+# serial 5
+# Check for flexible array member support.
+
+# Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Written by Paul Eggert.
+
+AC_DEFUN([AC_C_FLEXIBLE_ARRAY_MEMBER],
+[
+  AC_CACHE_CHECK([for flexible array member],
+    ac_cv_c_flexmember,
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <stdlib.h>
+            #include <stdio.h>
+            #include <stddef.h>
+            struct m { struct m *next, **list; char name[]; };
+            struct s { struct s *p; struct m *m; int n; double d[]; };]],
+          [[int m = getchar ();
+            size_t nbytes = offsetof (struct s, d) + m * sizeof (double);
+            nbytes += sizeof (struct s) - 1;
+            nbytes -= nbytes % sizeof (struct s);
+            struct s *p = malloc (nbytes);
+            p->p = p;
+            p->m = NULL;
+            p->d[0] = 0.0;
+            return p->d != (double *) NULL;]])],
+       [ac_cv_c_flexmember=yes],
+       [ac_cv_c_flexmember=no])])
+  if test $ac_cv_c_flexmember = yes; then
+    AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [],
+      [Define to nothing if C supports flexible array members, and to
+       1 if it does not.  That way, with a declaration like 'struct s
+       { int n; short d@<:@FLEXIBLE_ARRAY_MEMBER@:>@; };', the struct hack
+       can be used with pre-C99 compilers.
+       Use 'FLEXSIZEOF (struct s, d, N * sizeof (short))' to calculate
+       the size in bytes of such a struct containing an N-element array.])
+  else
+    AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1])
+  fi
+])
diff --git a/src/grep/m4/float_h.m4 b/src/grep/m4/float_h.m4
new file mode 100644
index 0000000..ba38a28
--- /dev/null
+++ b/src/grep/m4/float_h.m4
@@ -0,0 +1,108 @@
+# float_h.m4 serial 12
+dnl Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FLOAT_H],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  FLOAT_H=
+  REPLACE_FLOAT_LDBL=0
+  case "$host_os" in
+    aix* | beos* | openbsd* | mirbsd* | irix*)
+      FLOAT_H=float.h
+      ;;
+    freebsd* | dragonfly*)
+      case "$host_cpu" in
+changequote(,)dnl
+        i[34567]86 )
+changequote([,])dnl
+          FLOAT_H=float.h
+          ;;
+        x86_64 )
+          # On x86_64 systems, the C compiler may still be generating
+          # 32-bit code.
+          AC_COMPILE_IFELSE(
+            [AC_LANG_SOURCE(
+               [[#if defined __LP64__ || defined __x86_64__ || defined __amd64__
+                  int ok;
+                 #else
+                  error fail
+                 #endif
+               ]])],
+            [],
+            [FLOAT_H=float.h])
+          ;;
+      esac
+      ;;
+    linux*)
+      case "$host_cpu" in
+        powerpc*)
+          FLOAT_H=float.h
+          ;;
+      esac
+      ;;
+  esac
+  case "$host_os" in
+    aix* | freebsd* | dragonfly* | linux*)
+      if test -n "$FLOAT_H"; then
+        REPLACE_FLOAT_LDBL=1
+      fi
+      ;;
+  esac
+
+  dnl Test against glibc-2.7 Linux/SPARC64 bug.
+  REPLACE_ITOLD=0
+  AC_CACHE_CHECK([whether conversion from 'int' to 'long double' works],
+    [gl_cv_func_itold_works],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+int i = -1;
+volatile long double ld;
+int main ()
+{
+  ld += i * 1.0L;
+  if (ld > 0)
+    return 1;
+  return 0;
+}]])],
+        [gl_cv_func_itold_works=yes],
+        [gl_cv_func_itold_works=no],
+        [case "$host" in
+           sparc*-*-linux*)
+             AC_COMPILE_IFELSE(
+               [AC_LANG_SOURCE(
+                 [[#if defined __LP64__ || defined __arch64__
+                    int ok;
+                   #else
+                    error fail
+                   #endif
+                 ]])],
+               [gl_cv_func_itold_works="guessing no"],
+               [gl_cv_func_itold_works="guessing yes"])
+             ;;
+                   # Guess yes on native Windows.
+           mingw*) gl_cv_func_itold_works="guessing yes" ;;
+           *)      gl_cv_func_itold_works="guessing yes" ;;
+         esac
+        ])
+    ])
+  case "$gl_cv_func_itold_works" in
+    *no)
+      REPLACE_ITOLD=1
+      dnl We add the workaround to <float.h> but also to <math.h>,
+      dnl to increase the chances that the fix function gets pulled in.
+      FLOAT_H=float.h
+      ;;
+  esac
+
+  if test -n "$FLOAT_H"; then
+    gl_NEXT_HEADERS([float.h])
+  fi
+  AC_SUBST([FLOAT_H])
+  AM_CONDITIONAL([GL_GENERATE_FLOAT_H], [test -n "$FLOAT_H"])
+  AC_SUBST([REPLACE_ITOLD])
+])
diff --git a/src/grep/m4/fnmatch.m4 b/src/grep/m4/fnmatch.m4
new file mode 100644
index 0000000..81589ca
--- /dev/null
+++ b/src/grep/m4/fnmatch.m4
@@ -0,0 +1,153 @@
+# Check for fnmatch - serial 15.  -*- coding: utf-8 -*-
+
+# Copyright (C) 2000-2007, 2009-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Autoconf defines AC_FUNC_FNMATCH, but that is obsolescent.
+# New applications should use the macros below instead.
+
+# Request a POSIX compliant fnmatch function.
+AC_DEFUN([gl_FUNC_FNMATCH_POSIX],
+[
+  m4_divert_text([DEFAULTS], [gl_fnmatch_required=POSIX])
+
+  AC_REQUIRE([gl_FNMATCH_H])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  gl_fnmatch_required_lowercase=`
+    echo $gl_fnmatch_required | LC_ALL=C tr '[[A-Z]]' '[[a-z]]'
+  `
+  AC_CHECK_FUNCS_ONCE([fnmatch])
+  if test $ac_cv_func_fnmatch = no; then
+    HAVE_FNMATCH=0
+  else
+    gl_fnmatch_cache_var="gl_cv_func_fnmatch_${gl_fnmatch_required_lowercase}"
+    AC_CACHE_CHECK([for working $gl_fnmatch_required fnmatch],
+      [$gl_fnmatch_cache_var],
+      [dnl Some versions of Solaris, SCO, and the GNU C Library
+       dnl have a broken or incompatible fnmatch.
+       dnl So we run a test program.  If we are cross-compiling, take no chance.
+       dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this
+       dnl test.
+       if test $gl_fnmatch_required = GNU; then
+         gl_fnmatch_gnu_start=
+         gl_fnmatch_gnu_end=
+       else
+         gl_fnmatch_gnu_start='#if 0'
+         gl_fnmatch_gnu_end='#endif'
+       fi
+       AC_RUN_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <fnmatch.h>
+              static int
+              y (char const *pattern, char const *string, int flags)
+              {
+                return fnmatch (pattern, string, flags) == 0;
+              }
+              static int
+              n (char const *pattern, char const *string, int flags)
+              {
+                return fnmatch (pattern, string, flags) == FNM_NOMATCH;
+              }
+            ]],
+            [[char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]";
+              char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]";
+              static char const A_1[] = { 'A' - 1, 0 };
+              static char const A01[] = { 'A' + 1, 0 };
+              static char const a_1[] = { 'a' - 1, 0 };
+              static char const a01[] = { 'a' + 1, 0 };
+              static char const bs_1[] = { '\\\\' - 1, 0 };
+              static char const bs01[] = { '\\\\' + 1, 0 };
+              int result = 0;
+              if (!n ("a*", "", 0))
+                return 1;
+              if (!y ("a*", "abc", 0))
+                return 1;
+              if (!y ("[/b", "[/b", 0)) /*"]]"*/ /* glibc Bugzilla bug 12378 */
+                return 1;
+              if (!n ("d*/*1", "d/s/1", FNM_PATHNAME))
+                return 2;
+              if (!y ("a\\\\bc", "abc", 0))
+                return 3;
+              if (!n ("a\\\\bc", "abc", FNM_NOESCAPE))
+                return 3;
+              if (!y ("*x", ".x", 0))
+                return 4;
+              if (!n ("*x", ".x", FNM_PERIOD))
+                return 4;
+              if (!y (Apat, "\\\\", 0))
+                return 5;
+              if (!y (Apat, "A", 0))
+                return 5;
+              if (!y (apat, "\\\\", 0))
+                return 5;
+              if (!y (apat, "a", 0))
+                return 5;
+              if (!(n (Apat, A_1, 0) == ('A' < '\\\\')))
+                return 5;
+              if (!(n (apat, a_1, 0) == ('a' < '\\\\')))
+                return 5;
+              if (!(y (Apat, A01, 0) == ('A' < '\\\\')))
+                return 5;
+              if (!(y (apat, a01, 0) == ('a' < '\\\\')))
+                return 5;
+              if (!(y (Apat, bs_1, 0) == ('A' < '\\\\')))
+                return 5;
+              if (!(y (apat, bs_1, 0) == ('a' < '\\\\')))
+                return 5;
+              if (!(n (Apat, bs01, 0) == ('A' < '\\\\')))
+                return 5;
+              if (!(n (apat, bs01, 0) == ('a' < '\\\\')))
+                return 5;
+              $gl_fnmatch_gnu_start
+              if (!y ("xxXX", "xXxX", FNM_CASEFOLD))
+                result |= 8;
+              if (!y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH))
+                result |= 16;
+              if (!n ("d*/*1", "d/s/1", FNM_FILE_NAME))
+                result |= 32;
+              if (!y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR))
+                result |= 64;
+              if (!y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR))
+                result |= 64;
+              if (!y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR))
+                result |= 64;
+              $gl_fnmatch_gnu_end
+              return result;
+            ]])],
+         [eval "$gl_fnmatch_cache_var=yes"],
+         [eval "$gl_fnmatch_cache_var=no"],
+         [case "$host_os" in
+                     # Guess yes on musl systems.
+            *-musl*) eval "$gl_fnmatch_cache_var=\"guessing yes\"" ;;
+                     # Guess no otherwise, even on glibc systems.
+            *)       eval "$gl_fnmatch_cache_var=\"guessing no\"" ;;
+          esac
+         ])
+      ])
+    eval "gl_fnmatch_result=\"\$$gl_fnmatch_cache_var\""
+    case "$gl_fnmatch_result" in
+      *yes) ;;
+      *) REPLACE_FNMATCH=1 ;;
+    esac
+  fi
+  if test $HAVE_FNMATCH = 0 || test $REPLACE_FNMATCH = 1; then
+    gl_REPLACE_FNMATCH_H
+  fi
+])
+
+# Request a POSIX compliant fnmatch function with GNU extensions.
+AC_DEFUN([gl_FUNC_FNMATCH_GNU],
+[
+  m4_divert_text([INIT_PREPARE], [gl_fnmatch_required=GNU])
+
+  AC_REQUIRE([gl_FUNC_FNMATCH_POSIX])
+])
+
+AC_DEFUN([gl_PREREQ_FNMATCH],
+[
+  dnl Prerequisites of lib/fnmatch.c.
+  AC_REQUIRE([AC_TYPE_MBSTATE_T])
+  AC_CHECK_FUNCS_ONCE([mbsrtowcs])
+])
diff --git a/src/grep/m4/fnmatch_h.m4 b/src/grep/m4/fnmatch_h.m4
new file mode 100644
index 0000000..e9bcb66
--- /dev/null
+++ b/src/grep/m4/fnmatch_h.m4
@@ -0,0 +1,90 @@
+# fnmatch_h.m4 serial 7
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_DEFUN_ONCE([gl_FNMATCH_H],
+[
+  AC_REQUIRE([gl_FNMATCH_H_DEFAULTS])
+  m4_ifdef([gl_ANSI_CXX], [AC_REQUIRE([gl_ANSI_CXX])])
+  AC_CHECK_HEADERS_ONCE([fnmatch.h])
+  gl_CHECK_NEXT_HEADERS([fnmatch.h])
+
+  dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.
+  dnl This is only needed if gl_fnmatch_required = GNU. It would be possible
+  dnl to avoid this dependency for gl_FUNC_FNMATCH_POSIX by putting
+  dnl gl_FUNC_FNMATCH_GNU into a separate .m4 file.
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  if test $ac_cv_header_fnmatch_h = yes; then
+    HAVE_FNMATCH_H=1
+  else
+    HAVE_FNMATCH_H=0
+  fi
+  AC_SUBST([HAVE_FNMATCH_H])
+
+  m4_ifdef([gl_POSIXCHECK],
+    [FNMATCH_H=fnmatch.h],
+    [FNMATCH_H=''
+     if m4_ifdef([gl_ANSI_CXX], [test "$CXX" != no], [false]); then
+       dnl Override <fnmatch.h> always, to support the C++ GNULIB_NAMESPACE.
+       FNMATCH_H=fnmatch.h
+     else
+       if test $ac_cv_header_fnmatch_h != yes; then
+         dnl Provide a substitute <fnmatch.h> file.
+         FNMATCH_H=fnmatch.h
+       fi
+     fi
+    ])
+  AC_SUBST([FNMATCH_H])
+  AM_CONDITIONAL([GL_GENERATE_FNMATCH_H], [test -n "$FNMATCH_H"])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <fnmatch.h>
+    ]],
+    [fnmatch])
+])
+
+dnl Unconditionally enables the replacement of <fnmatch.h>.
+AC_DEFUN([gl_REPLACE_FNMATCH_H],
+[
+  gl_FNMATCH_H_REQUIRE_DEFAULTS
+  FNMATCH_H='fnmatch.h'
+  AM_CONDITIONAL([GL_GENERATE_FNMATCH_H], [test -n "$FNMATCH_H"])
+])
+
+# gl_FNMATCH_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_FNMATCH_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_FNMATCH_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_FNMATCH_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_FNMATCH_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FNMATCH])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_FNMATCH_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_FNMATCH_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_FNMATCH_H_DEFAULTS],
+[
+  dnl Assume POSIX behavior unless another module says otherwise.
+  HAVE_FNMATCH=1;            AC_SUBST([HAVE_FNMATCH])
+  REPLACE_FNMATCH=0;         AC_SUBST([REPLACE_FNMATCH])
+])
diff --git a/src/grep/m4/fopen.m4 b/src/grep/m4/fopen.m4
new file mode 100644
index 0000000..4ed7dce
--- /dev/null
+++ b/src/grep/m4/fopen.m4
@@ -0,0 +1,148 @@
+# fopen.m4 serial 12
+dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_FOPEN],
+[
+  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    mingw* | pw*)
+      dnl Replace fopen, for handling of "/dev/null".
+      REPLACE_FOPEN=1
+      dnl fopen on mingw also has the trailing slash bug.
+      gl_cv_func_fopen_slash="guessing no"
+      ;;
+    *)
+      dnl fopen("foo/", "w") should not create a file when the file name has a
+      dnl trailing slash.
+      AC_CACHE_CHECK([whether fopen recognizes a trailing slash],
+        [gl_cv_func_fopen_slash],
+        [
+          AC_RUN_IFELSE(
+            [AC_LANG_SOURCE([[
+#include <stddef.h>
+#include <stdio.h>
+int main ()
+{
+  FILE *fp = fopen ("conftest.sl/", "w");
+  int result = (fp != NULL);
+  if (fp != NULL)
+    fclose (fp);
+  return result;
+}]])],
+            [gl_cv_func_fopen_slash=yes],
+            [gl_cv_func_fopen_slash=no],
+            [
+changequote(,)dnl
+             case "$host_os" in
+               aix* | hpux* | solaris2.[0-9] | solaris2.[0-9].*)
+                 gl_cv_func_fopen_slash="guessing no" ;;
+               *)
+                 gl_cv_func_fopen_slash="guessing yes" ;;
+             esac
+changequote([,])dnl
+            ])
+          rm -f conftest.sl
+        ])
+      ;;
+  esac
+  case "$gl_cv_func_fopen_slash" in
+    *no)
+      AC_DEFINE([FOPEN_TRAILING_SLASH_BUG], [1],
+        [Define to 1 if fopen() fails to recognize a trailing slash.])
+      REPLACE_FOPEN=1
+      ;;
+  esac
+])
+
+AC_DEFUN([gl_FUNC_FOPEN_GNU],
+[
+  AC_REQUIRE([gl_FUNC_FOPEN])
+  AC_CACHE_CHECK([whether fopen supports the mode character 'x'],
+    [gl_cv_func_fopen_mode_x],
+    [rm -f conftest.x
+     AC_RUN_IFELSE(
+       [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <errno.h>
+int main ()
+{
+  FILE *fp;
+  fp = fopen ("conftest.x", "w");
+  fclose (fp);
+  fp = fopen ("conftest.x", "wx");
+  if (fp != NULL)
+    /* 'x' ignored */
+    return 1;
+  else if (errno == EEXIST)
+    return 0;
+  else
+    /* 'x' rejected */
+    return 2;
+}]])],
+       [gl_cv_func_fopen_mode_x=yes],
+       [gl_cv_func_fopen_mode_x=no],
+       [case "$host_os" in
+          # Guess yes on glibc and musl systems.
+          linux*-gnu* | gnu* | kfreebsd*-gnu | *-musl*)
+            gl_cv_func_fopen_mode_x="guessing yes" ;;
+          # If we don't know, obey --enable-cross-guesses.
+          *)
+            gl_cv_func_fopen_mode_x="$gl_cross_guess_normal" ;;
+        esac
+       ])
+     rm -f conftest.x
+    ])
+  AC_CACHE_CHECK([whether fopen supports the mode character 'e'],
+    [gl_cv_func_fopen_mode_e],
+    [echo foo > conftest.x
+     AC_RUN_IFELSE(
+       [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+]GL_MDA_DEFINES[
+int main ()
+{
+  FILE *fp = fopen ("conftest.x", "re");
+  if (fp != NULL)
+    {
+      if (fcntl (fileno (fp), F_GETFD) & FD_CLOEXEC)
+        return 0;
+      else
+        /* 'e' ignored */
+        return 1;
+    }
+  else
+    /* 'e' rejected */
+    return 2;
+}]])],
+       [gl_cv_func_fopen_mode_e=yes],
+       [gl_cv_func_fopen_mode_e=no],
+       [case "$host_os" in
+          # Guess yes on glibc and musl systems.
+          linux*-gnu* | gnu* | kfreebsd*-gnu | *-musl*)
+            gl_cv_func_fopen_mode_e="guessing yes" ;;
+          # Guess no on native Windows.
+          mingw*)
+            gl_cv_func_fopen_mode_e="guessing no" ;;
+          # If we don't know, obey --enable-cross-guesses.
+          *)
+            gl_cv_func_fopen_mode_e="$gl_cross_guess_normal" ;;
+        esac
+       ])
+     rm -f conftest.x
+    ])
+  case "$gl_cv_func_fopen_mode_x" in
+    *no) REPLACE_FOPEN=1 ;;
+  esac
+  case "$gl_cv_func_fopen_mode_e" in
+    *no) REPLACE_FOPEN=1 ;;
+  esac
+])
+
+# Prerequisites of lib/fopen.c.
+AC_DEFUN([gl_PREREQ_FOPEN], [:])
diff --git a/src/grep/m4/fpending.m4 b/src/grep/m4/fpending.m4
new file mode 100644
index 0000000..131356a
--- /dev/null
+++ b/src/grep/m4/fpending.m4
@@ -0,0 +1,36 @@
+# serial 23
+
+# Copyright (C) 2000-2001, 2004-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl From Jim Meyering
+dnl Using code from emacs, based on suggestions from Paul Eggert
+dnl and Ulrich Drepper.
+
+dnl Find out how to determine the number of pending output bytes on a stream.
+dnl glibc (2.1.93 and newer) and Solaris provide __fpending.  On other systems,
+dnl we have to grub around in the (possibly opaque) FILE struct.
+
+AC_DEFUN([gl_FUNC_FPENDING],
+[
+  AC_CHECK_HEADERS_ONCE([stdio_ext.h])
+  fp_headers='
+    #include <stdio.h>
+    #if HAVE_STDIO_EXT_H
+    # include <stdio_ext.h>
+    #endif
+  '
+  AC_CACHE_CHECK([for __fpending], [gl_cv_func___fpending],
+    [
+      AC_LINK_IFELSE(
+        [AC_LANG_PROGRAM([[$fp_headers]],
+           [[return ! __fpending (stdin);]])],
+        [gl_cv_func___fpending=yes],
+        [gl_cv_func___fpending=no])
+    ])
+  if test $gl_cv_func___fpending = yes; then
+    AC_CHECK_DECLS([__fpending], [], [], [$fp_headers])
+  fi
+])
diff --git a/src/grep/m4/fpieee.m4 b/src/grep/m4/fpieee.m4
new file mode 100644
index 0000000..3f16957
--- /dev/null
+++ b/src/grep/m4/fpieee.m4
@@ -0,0 +1,54 @@
+# fpieee.m4 serial 2  -*- coding: utf-8 -*-
+dnl Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl IEEE 754 standardized three items:
+dnl - The formats of single-float and double-float - nowadays commonly
+dnl   available as 'float' and 'double' in C and C++.
+dnl   No autoconf test needed.
+dnl - The overflow and division by zero behaviour: The result are values
+dnl   '±Inf' and 'NaN', rather than exceptions as it was before.
+dnl   This file provides an autoconf macro for ensuring this behaviour of
+dnl   floating-point operations.
+dnl - A set of conditions (overflow, underflow, inexact, etc.) which can
+dnl   be configured to trigger an exception.
+dnl   This cannot be done in a portable way: it depends on the compiler,
+dnl   libc, kernel, and CPU.  No autoconf macro is provided for this.
+
+dnl Ensure non-trapping behaviour of floating-point overflow and
+dnl floating-point division by zero.
+dnl (For integer overflow, see gcc's -ftrapv option; for integer division by
+dnl zero, see the autoconf macro in intdiv0.m4.)
+
+AC_DEFUN([gl_FP_IEEE],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  # IEEE behaviour is the default on all CPUs except Alpha and SH
+  # (according to the test results of Bruno Haible's ieeefp/fenv_default.m4
+  # and the GCC 4.1.2 manual).
+  case "$host_cpu" in
+    alpha*)
+      # On Alpha systems, a compiler option provides the behaviour.
+      # See the ieee(3) manual page, also available at
+      # <https://backdrift.org/man/tru64/man3/ieee.3.html>
+      if test -n "$GCC"; then
+        # GCC has the option -mieee.
+        # For full IEEE compliance (rarely needed), use option -mieee-with-inexact.
+        CPPFLAGS="$CPPFLAGS -mieee"
+      else
+        # Compaq (ex-DEC) C has the option -ieee, equivalent to -ieee_with_no_inexact.
+        # For full IEEE compliance (rarely needed), use option -ieee_with_inexact.
+        CPPFLAGS="$CPPFLAGS -ieee"
+      fi
+      ;;
+    sh*)
+      if test -n "$GCC"; then
+        # GCC has the option -mieee.
+        CPPFLAGS="$CPPFLAGS -mieee"
+      fi
+      ;;
+  esac
+])
diff --git a/src/grep/m4/free.m4 b/src/grep/m4/free.m4
new file mode 100644
index 0000000..a7923b9
--- /dev/null
+++ b/src/grep/m4/free.m4
@@ -0,0 +1,52 @@
+# free.m4 serial 6
+# Copyright (C) 2003-2005, 2009-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Written by Paul Eggert and Bruno Haible.
+
+AC_DEFUN([gl_FUNC_FREE],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+
+  dnl In the next release of POSIX, free must preserve errno.
+  dnl https://www.austingroupbugs.net/view.php?id=385
+  dnl https://sourceware.org/bugzilla/show_bug.cgi?id=17924
+  dnl So far, we know of three platforms that do this:
+  dnl * glibc >= 2.33, thanks to the fix for this bug:
+  dnl   <https://sourceware.org/bugzilla/show_bug.cgi?id=17924>
+  dnl * OpenBSD >= 4.5, thanks to this commit:
+  dnl   <https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdlib/malloc.c.diff?r1=1.100&r2=1.101&f=h>
+  dnl * Solaris, because its malloc() implementation is based on brk(),
+  dnl   not mmap(); hence its free() implementation makes no system calls.
+  dnl For other platforms, you can only be sure if they state it in their
+  dnl documentation, or by code inspection of the free() implementation in libc.
+  AC_CACHE_CHECK([whether free is known to preserve errno],
+    [gl_cv_func_free_preserves_errno],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <stdlib.h>
+          ]],
+          [[#if 2 < __GLIBC__ + (33 <= __GLIBC_MINOR__)
+            #elif defined __OpenBSD__
+            #elif defined __sun
+            #else
+              #error "'free' is not known to preserve errno"
+            #endif
+          ]])],
+       [gl_cv_func_free_preserves_errno=yes],
+       [gl_cv_func_free_preserves_errno=no])
+    ])
+
+  case $gl_cv_func_free_preserves_errno in
+   *yes)
+    AC_DEFINE([HAVE_FREE_POSIX], [1],
+      [Define if the 'free' function is guaranteed to preserve errno.])
+    ;;
+   *) REPLACE_FREE=1 ;;
+  esac
+])
+
+# Prerequisites of lib/free.c.
+AC_DEFUN([gl_PREREQ_FREE], [:])
diff --git a/src/grep/m4/fstat.m4 b/src/grep/m4/fstat.m4
new file mode 100644
index 0000000..cdaca80
--- /dev/null
+++ b/src/grep/m4/fstat.m4
@@ -0,0 +1,40 @@
+# fstat.m4 serial 8
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_FSTAT],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+
+  case "$host_os" in
+    mingw* | solaris*)
+      dnl On MinGW, the original stat() returns st_atime, st_mtime,
+      dnl st_ctime values that are affected by the time zone.
+      dnl Solaris stat can return a negative tv_nsec.
+      REPLACE_FSTAT=1
+      ;;
+  esac
+
+  dnl Replace fstat() for supporting the gnulib-defined open() on directories.
+  m4_ifdef([gl_FUNC_FCHDIR], [
+    gl_TEST_FCHDIR
+    if test $HAVE_FCHDIR = 0; then
+      case "$gl_cv_func_open_directory_works" in
+        *yes) ;;
+        *)
+          REPLACE_FSTAT=1
+          ;;
+      esac
+    fi
+  ])
+])
+
+# Prerequisites of lib/fstat.c and lib/stat-w32.c.
+AC_DEFUN([gl_PREREQ_FSTAT], [
+  AC_REQUIRE([gl_SYS_STAT_H])
+  AC_REQUIRE([gl_PREREQ_STAT_W32])
+  :
+])
diff --git a/src/grep/m4/fstatat.m4 b/src/grep/m4/fstatat.m4
new file mode 100644
index 0000000..d730e46
--- /dev/null
+++ b/src/grep/m4/fstatat.m4
@@ -0,0 +1,65 @@
+# fstatat.m4 serial 4
+dnl Copyright (C) 2004-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Written by Jim Meyering.
+
+# If we have the fstatat function, and it has the bug (in AIX 7.1)
+# that it does not fill in st_size correctly, use the replacement function.
+AC_DEFUN([gl_FUNC_FSTATAT],
+[
+  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_REQUIRE([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CHECK_FUNCS_ONCE([fstatat])
+
+  if test $ac_cv_func_fstatat = no; then
+    HAVE_FSTATAT=0
+  else
+    dnl Test for an AIX 7.1 bug; see
+    dnl <https://lists.gnu.org/r/bug-tar/2011-09/msg00015.html>.
+    AC_CACHE_CHECK([whether fstatat (..., 0) works],
+      [gl_cv_func_fstatat_zero_flag],
+      [AC_RUN_IFELSE(
+         [AC_LANG_SOURCE(
+            [[
+              #include <fcntl.h>
+              #include <sys/stat.h>
+              int
+              main (void)
+              {
+                struct stat a;
+                return fstatat (AT_FDCWD, ".", &a, 0) != 0;
+              }
+            ]])],
+         [gl_cv_func_fstatat_zero_flag=yes],
+         [gl_cv_func_fstatat_zero_flag=no],
+         [case "$host_os" in
+            aix*) gl_cv_func_fstatat_zero_flag="guessing no";;
+            *)    gl_cv_func_fstatat_zero_flag="guessing yes";;
+          esac
+         ])
+      ])
+
+    case $gl_cv_func_fstatat_zero_flag+$gl_cv_func_lstat_dereferences_slashed_symlink in
+    *yes+*yes) ;;
+    *) REPLACE_FSTATAT=1 ;;
+    esac
+
+    case $host_os in
+      solaris*)
+        REPLACE_FSTATAT=1 ;;
+    esac
+
+    case $REPLACE_FSTATAT,$gl_cv_func_fstatat_zero_flag in
+      1,*yes)
+         AC_DEFINE([HAVE_WORKING_FSTATAT_ZERO_FLAG], [1],
+           [Define to 1 if fstatat (..., 0) works.
+            For example, it does not work in AIX 7.1.])
+         ;;
+    esac
+  fi
+])
diff --git a/src/grep/m4/ftruncate.m4 b/src/grep/m4/ftruncate.m4
new file mode 100644
index 0000000..4a3eca6
--- /dev/null
+++ b/src/grep/m4/ftruncate.m4
@@ -0,0 +1,40 @@
+# serial 21
+
+# See if we need to emulate a missing ftruncate function using _chsize.
+
+# Copyright (C) 2000-2001, 2003-2007, 2009-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_FTRUNCATE],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_CHECK_FUNCS_ONCE([ftruncate])
+  if test $ac_cv_func_ftruncate = yes; then
+    m4_ifdef([gl_LARGEFILE], [
+      AC_REQUIRE([AC_CANONICAL_HOST])
+      case "$host_os" in
+        mingw*)
+          dnl Native Windows, and Large File Support is requested.
+          dnl The MSVCRT _chsize() function only accepts a 32-bit file size,
+          dnl and the mingw64 ftruncate64() function is unreliable (it may
+          dnl delete the file, see
+          dnl <https://web.archive.org/web/20160425005423/http://mingw-w64.sourcearchive.com/documentation/2.0-1/ftruncate64_8c_source.html>).
+          dnl Use gnulib's ftruncate() implementation instead.
+          REPLACE_FTRUNCATE=1
+          ;;
+      esac
+    ], [
+      :
+    ])
+  else
+    HAVE_FTRUNCATE=0
+  fi
+])
+
+# Prerequisites of lib/ftruncate.c.
+AC_DEFUN([gl_PREREQ_FTRUNCATE],
+[
+  AC_CHECK_FUNCS([_chsize])
+])
diff --git a/src/grep/m4/fts.m4 b/src/grep/m4/fts.m4
new file mode 100644
index 0000000..44dfaa5
--- /dev/null
+++ b/src/grep/m4/fts.m4
@@ -0,0 +1,49 @@
+#serial 22
+dnl Copyright (C) 2005-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_FTS],
+[
+  gl_FUNC_FTS_CORE
+])
+
+AC_DEFUN([gl_FUNC_FTS_CORE],
+[
+  dnl Prerequisites of lib/fts.c.
+  gl_FUNC_OPENAT
+
+  AC_CHECK_FUNCS_ONCE([fstatfs])
+  AC_CHECK_HEADERS_ONCE([sys/param.h sys/vfs.h])dnl
+  if test "$ac_cv_func_fstatfs,$ac_cv_header_sys_vfs_h" = yes,yes; then
+    AC_CHECK_MEMBERS([struct statfs.f_type], [], [],
+      [[$ac_includes_default
+        #include <sys/vfs.h>
+      ]])
+    if test "$ac_cv_member_struct_statfs_f_type" = yes; then
+      AC_CHECK_TYPES([__fsword_t], [], [],
+        [[$ac_includes_default
+          #include <sys/vfs.h>
+        ]])
+    fi
+  fi
+
+  AC_CHECK_FUNC([fts_open])
+  if test $ac_cv_func_fts_open = yes; then
+    dnl The system already has the symbols fts_open, etc.
+    dnl Avoid conflicts between these symbols and ours at the linker level.
+    AC_DEFINE([fts_open], [rpl_fts_open],
+      [Define to the overridden function name])
+    AC_DEFINE([fts_close], [rpl_fts_close],
+      [Define to the overridden function name])
+    AC_DEFINE([fts_read], [rpl_fts_read],
+      [Define to the overridden function name])
+    AC_DEFINE([fts_set], [rpl_fts_set],
+      [Define to the overridden function name])
+    AC_DEFINE([fts_children], [rpl_fts_children],
+      [Define to the overridden function name])
+    AC_DEFINE([fts_cross_check], [rpl_fts_cross_check],
+      [Define to the overridden function name])
+  fi
+])
diff --git a/src/grep/m4/getcwd.m4 b/src/grep/m4/getcwd.m4
new file mode 100644
index 0000000..6ec7a94
--- /dev/null
+++ b/src/grep/m4/getcwd.m4
@@ -0,0 +1,166 @@
+# getcwd.m4 - check for working getcwd that is compatible with glibc
+
+# Copyright (C) 2001, 2003-2007, 2009-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Written by Paul Eggert.
+# serial 19
+
+AC_DEFUN([gl_FUNC_GETCWD_NULL],
+  [
+   AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+   AC_CHECK_HEADERS_ONCE([unistd.h])
+   AC_CACHE_CHECK([whether getcwd (NULL, 0) allocates memory for result],
+     [gl_cv_func_getcwd_null],
+     [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+#	 include <stdlib.h>
+#        if HAVE_UNISTD_H
+#         include <unistd.h>
+#        else /* on Windows with MSVC */
+#         include <direct.h>
+#        endif
+         ]GL_MDA_DEFINES[
+#        ifndef getcwd
+         char *getcwd ();
+#        endif
+]], [[
+#if defined _WIN32 && ! defined __CYGWIN__
+/* mingw cwd does not start with '/', but _getcwd does allocate.
+   However, mingw fails to honor non-zero size.  */
+#else
+           if (chdir ("/") != 0)
+             return 1;
+           else
+             {
+               char *f = getcwd (NULL, 0);
+               if (! f)
+                 return 2;
+               if (f[0] != '/')
+                 { free (f); return 3; }
+               if (f[1] != '\0')
+                 { free (f); return 4; }
+               free (f);
+               return 0;
+             }
+#endif
+         ]])],
+        [gl_cv_func_getcwd_null=yes],
+        [gl_cv_func_getcwd_null=no],
+        [[case "$host_os" in
+                           # Guess yes on glibc systems.
+            *-gnu* | gnu*) gl_cv_func_getcwd_null="guessing yes";;
+                           # Guess yes on musl systems.
+            *-musl*)       gl_cv_func_getcwd_null="guessing yes";;
+                           # Guess yes on Cygwin.
+            cygwin*)       gl_cv_func_getcwd_null="guessing yes";;
+                           # If we don't know, obey --enable-cross-guesses.
+            *)             gl_cv_func_getcwd_null="$gl_cross_guess_normal";;
+          esac
+        ]])])
+])
+
+AC_DEFUN([gl_FUNC_GETCWD_SIGNATURE],
+[
+  AC_CACHE_CHECK([for getcwd with POSIX signature],
+    [gl_cv_func_getcwd_posix_signature],
+    [AC_COMPILE_IFELSE(
+      [AC_LANG_PROGRAM(
+         [[#include <unistd.h>
+         ]GL_MDA_DEFINES],
+         [[extern
+           #ifdef __cplusplus
+           "C"
+           #endif
+           char *getcwd (char *, size_t);
+         ]])
+      ],
+      [gl_cv_func_getcwd_posix_signature=yes],
+      [gl_cv_func_getcwd_posix_signature=no])
+   ])
+])
+
+dnl Guarantee that getcwd will malloc with a NULL first argument.  Assumes
+dnl that either the system getcwd is robust, or that calling code is okay
+dnl with spurious failures when run from a directory with an absolute name
+dnl larger than 4k bytes.
+dnl
+dnl Assumes that getcwd exists; if you are worried about obsolete
+dnl platforms that lacked getcwd(), then you need to use the GPL module.
+AC_DEFUN([gl_FUNC_GETCWD_LGPL],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([gl_FUNC_GETCWD_NULL])
+  AC_REQUIRE([gl_FUNC_GETCWD_SIGNATURE])
+
+  case $gl_cv_func_getcwd_null,$gl_cv_func_getcwd_posix_signature in
+  *yes,yes) ;;
+  *)
+    dnl Minimal replacement lib/getcwd-lgpl.c.
+    REPLACE_GETCWD=1
+    ;;
+  esac
+])
+
+dnl Check for all known getcwd bugs; useful for a program likely to be
+dnl executed from an arbitrary location.
+AC_DEFUN([gl_FUNC_GETCWD],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([gl_FUNC_GETCWD_NULL])
+  AC_REQUIRE([gl_FUNC_GETCWD_SIGNATURE])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  gl_abort_bug=no
+  case "$host_os" in
+    mingw*)
+      gl_cv_func_getcwd_path_max=yes
+      ;;
+    *)
+      gl_FUNC_GETCWD_PATH_MAX
+      case "$gl_cv_func_getcwd_null" in
+        *yes)
+          gl_FUNC_GETCWD_ABORT_BUG([gl_abort_bug=yes])
+          ;;
+      esac
+      ;;
+  esac
+  dnl Define HAVE_MINIMALLY_WORKING_GETCWD and HAVE_PARTLY_WORKING_GETCWD
+  dnl if appropriate.
+  case "$gl_cv_func_getcwd_path_max" in
+    *"no" | *"no, it has the AIX bug") ;;
+    *)
+      AC_DEFINE([HAVE_MINIMALLY_WORKING_GETCWD], [1],
+        [Define to 1 if getcwd minimally works, that is, its result can be
+         trusted when it succeeds.])
+      ;;
+  esac
+  case "$gl_cv_func_getcwd_path_max" in
+    *"no, but it is partly working")
+      AC_DEFINE([HAVE_PARTLY_WORKING_GETCWD], [1],
+        [Define to 1 if getcwd works, except it sometimes fails when it
+         shouldn't, setting errno to ERANGE, ENAMETOOLONG, or ENOENT.])
+      ;;
+    *"yes, but with shorter paths")
+      AC_DEFINE([HAVE_GETCWD_SHORTER], [1],
+        [Define to 1 if getcwd works, but with shorter paths
+         than is generally tested with the replacement.])
+      ;;
+  esac
+
+  if { case "$gl_cv_func_getcwd_null" in *yes) false;; *) true;; esac; } \
+     || test $gl_cv_func_getcwd_posix_signature != yes \
+     || { case "$gl_cv_func_getcwd_path_max" in *yes*) false;; *) true;; esac; } \
+     || test $gl_abort_bug = yes; then
+    REPLACE_GETCWD=1
+  fi
+])
+
+# Prerequisites of lib/getcwd.c, when full replacement is in effect.
+AC_DEFUN([gl_PREREQ_GETCWD],
+[
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_REQUIRE([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO])
+  :
+])
diff --git a/src/grep/m4/getdtablesize.m4 b/src/grep/m4/getdtablesize.m4
new file mode 100644
index 0000000..8fbc941
--- /dev/null
+++ b/src/grep/m4/getdtablesize.m4
@@ -0,0 +1,63 @@
+# getdtablesize.m4 serial 8
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_GETDTABLESIZE],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CHECK_FUNCS_ONCE([getdtablesize])
+  AC_CHECK_DECLS_ONCE([getdtablesize])
+  if test $ac_cv_func_getdtablesize = yes &&
+     test $ac_cv_have_decl_getdtablesize = yes; then
+    AC_CACHE_CHECK([whether getdtablesize works],
+      [gl_cv_func_getdtablesize_works],
+      [dnl There are two concepts: the "maximum possible file descriptor value + 1"
+       dnl and the "maximum number of open file descriptors in a process".
+       dnl Per SUSv2 and POSIX, getdtablesize() should return the first one.
+       dnl On most platforms, the first and the second concept are the same.
+       dnl On OpenVMS, however, they are different and getdtablesize() returns
+       dnl the second one; thus the test below fails. But we don't care
+       dnl because there's no good way to write a replacement getdtablesize().
+       case "$host_os" in
+         vms*) gl_cv_func_getdtablesize_works="no (limitation)" ;;
+         *)
+           dnl Cygwin 1.7.25 automatically increases the RLIMIT_NOFILE soft
+           dnl limit up to an unchangeable hard limit; all other platforms
+           dnl correctly require setrlimit before getdtablesize() can report
+           dnl a larger value.
+           AC_RUN_IFELSE([
+             AC_LANG_PROGRAM(
+               [[#include <unistd.h>]
+                GL_MDA_DEFINES
+               ],
+               [[int size = getdtablesize();
+                 if (dup2 (0, getdtablesize()) != -1)
+                   return 1;
+                 if (size != getdtablesize())
+                   return 2;
+               ]])],
+             [gl_cv_func_getdtablesize_works=yes],
+             [gl_cv_func_getdtablesize_works=no],
+             [case "$host_os" in
+                cygwin*) # on cygwin 1.5.25, getdtablesize() automatically grows
+                  gl_cv_func_getdtablesize_works="guessing no" ;;
+                *) gl_cv_func_getdtablesize_works="guessing yes" ;;
+              esac
+             ])
+           ;;
+       esac
+      ])
+    case "$gl_cv_func_getdtablesize_works" in
+      *yes | "no (limitation)") ;;
+      *) REPLACE_GETDTABLESIZE=1 ;;
+    esac
+  else
+    HAVE_GETDTABLESIZE=0
+  fi
+])
+
+# Prerequisites of lib/getdtablesize.c.
+AC_DEFUN([gl_PREREQ_GETDTABLESIZE], [:])
diff --git a/src/grep/m4/getopt.m4 b/src/grep/m4/getopt.m4
new file mode 100644
index 0000000..bb95c5e
--- /dev/null
+++ b/src/grep/m4/getopt.m4
@@ -0,0 +1,381 @@
+# getopt.m4 serial 47
+dnl Copyright (C) 2002-2006, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Request a POSIX compliant getopt function.
+AC_DEFUN([gl_FUNC_GETOPT_POSIX],
+[
+  m4_divert_text([DEFAULTS], [gl_getopt_required=POSIX])
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
+  dnl Other modules can request the gnulib implementation of the getopt
+  dnl functions unconditionally, by defining gl_REPLACE_GETOPT_ALWAYS.
+  dnl argp.m4 does this.
+  m4_ifdef([gl_REPLACE_GETOPT_ALWAYS], [
+    REPLACE_GETOPT=1
+  ], [
+    REPLACE_GETOPT=0
+    if test -n "$gl_replace_getopt"; then
+      REPLACE_GETOPT=1
+    fi
+  ])
+  if test $REPLACE_GETOPT = 1; then
+    dnl Arrange for getopt.h to be created.
+    gl_GETOPT_SUBSTITUTE_HEADER
+  fi
+])
+
+# Request a POSIX compliant getopt function with GNU extensions (such as
+# options with optional arguments) and the functions getopt_long,
+# getopt_long_only.
+AC_DEFUN([gl_FUNC_GETOPT_GNU],
+[
+  dnl Set the variable gl_getopt_required, so that all invocations of
+  dnl gl_GETOPT_CHECK_HEADERS in the scope of the current configure file
+  dnl will check for getopt with GNU extensions.
+  dnl This means that if one gnulib-tool invocation requests getopt-posix
+  dnl and another gnulib-tool invocation requests getopt-gnu, it is as if
+  dnl both had requested getopt-gnu.
+  m4_divert_text([INIT_PREPARE], [gl_getopt_required=GNU])
+
+  dnl No need to invoke gl_FUNC_GETOPT_POSIX here; this is automatically
+  dnl done through the module dependency getopt-gnu -> getopt-posix.
+])
+
+# Determine whether to replace the entire getopt facility.
+AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_REQUIRE([AC_PROG_AWK]) dnl for awk that supports ENVIRON
+
+  dnl Persuade Solaris <unistd.h> to declare optarg, optind, opterr, optopt.
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  gl_CHECK_NEXT_HEADERS([getopt.h])
+  if test $ac_cv_header_getopt_h = yes; then
+    HAVE_GETOPT_H=1
+  else
+    HAVE_GETOPT_H=0
+  fi
+  AC_SUBST([HAVE_GETOPT_H])
+
+  gl_replace_getopt=
+
+  dnl Test whether <getopt.h> is available.
+  if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
+    AC_CHECK_HEADERS([getopt.h], [], [gl_replace_getopt=yes])
+  fi
+
+  dnl Test whether the function getopt_long is available.
+  if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
+    AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes])
+  fi
+
+  dnl POSIX 2008 does not specify leading '+' behavior, but see
+  dnl http://austingroupbugs.net/view.php?id=191 for a recommendation on
+  dnl the next version of POSIX.  For now, we only guarantee leading '+'
+  dnl behavior with getopt-gnu.
+  if test -z "$gl_replace_getopt"; then
+    AC_CACHE_CHECK([whether getopt is POSIX compatible],
+      [gl_cv_func_getopt_posix],
+      [
+        dnl Merging these three different test programs into a single one
+        dnl would require a reset mechanism. On BSD systems, it can be done
+        dnl through 'optreset'; on some others (glibc), it can be done by
+        dnl setting 'optind' to 0; on others again (HP-UX, IRIX, OSF/1,
+        dnl Solaris 9, musl libc), there is no such mechanism.
+        if test $cross_compiling = no; then
+          dnl Sanity check. Succeeds everywhere (except on MSVC,
+          dnl which lacks <unistd.h> and getopt() entirely).
+          AC_RUN_IFELSE(
+            [AC_LANG_SOURCE([[
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main ()
+{
+  static char program[] = "program";
+  static char a[] = "-a";
+  static char foo[] = "foo";
+  static char bar[] = "bar";
+  char *argv[] = { program, a, foo, bar, NULL };
+  int c;
+
+  c = getopt (4, argv, "ab");
+  if (!(c == 'a'))
+    return 1;
+  c = getopt (4, argv, "ab");
+  if (!(c == -1))
+    return 2;
+  if (!(optind == 2))
+    return 3;
+  return 0;
+}
+]])],
+            [gl_cv_func_getopt_posix=maybe],
+            [gl_cv_func_getopt_posix=no])
+          if test $gl_cv_func_getopt_posix = maybe; then
+            dnl Sanity check with '+'. Succeeds everywhere (except on MSVC,
+            dnl which lacks <unistd.h> and getopt() entirely).
+            AC_RUN_IFELSE(
+              [AC_LANG_SOURCE([[
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main ()
+{
+  static char program[] = "program";
+  static char donald[] = "donald";
+  static char p[] = "-p";
+  static char billy[] = "billy";
+  static char duck[] = "duck";
+  static char a[] = "-a";
+  static char bar[] = "bar";
+  char *argv[] = { program, donald, p, billy, duck, a, bar, NULL };
+  int c;
+
+  c = getopt (7, argv, "+abp:q:");
+  if (!(c == -1))
+    return 4;
+  if (!(strcmp (argv[0], "program") == 0))
+    return 5;
+  if (!(strcmp (argv[1], "donald") == 0))
+    return 6;
+  if (!(strcmp (argv[2], "-p") == 0))
+    return 7;
+  if (!(strcmp (argv[3], "billy") == 0))
+    return 8;
+  if (!(strcmp (argv[4], "duck") == 0))
+    return 9;
+  if (!(strcmp (argv[5], "-a") == 0))
+    return 10;
+  if (!(strcmp (argv[6], "bar") == 0))
+    return 11;
+  if (!(optind == 1))
+    return 12;
+  return 0;
+}
+]])],
+              [gl_cv_func_getopt_posix=maybe],
+              [gl_cv_func_getopt_posix=no])
+          fi
+          if test $gl_cv_func_getopt_posix = maybe; then
+            dnl Detect Mac OS X 10.5, AIX 7.1, mingw bug.
+            AC_RUN_IFELSE(
+              [AC_LANG_SOURCE([[
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main ()
+{
+  static char program[] = "program";
+  static char ab[] = "-ab";
+  char *argv[3] = { program, ab, NULL };
+  if (getopt (2, argv, "ab:") != 'a')
+    return 13;
+  if (getopt (2, argv, "ab:") != '?')
+    return 14;
+  if (optopt != 'b')
+    return 15;
+  if (optind != 2)
+    return 16;
+  return 0;
+}
+]])],
+              [gl_cv_func_getopt_posix=yes],
+              [gl_cv_func_getopt_posix=no])
+          fi
+        else
+          case "$host_os" in
+            darwin* | aix* | mingw*) gl_cv_func_getopt_posix="guessing no";;
+            *)                       gl_cv_func_getopt_posix="guessing yes";;
+          esac
+        fi
+      ])
+    case "$gl_cv_func_getopt_posix" in
+      *no) gl_replace_getopt=yes ;;
+    esac
+  fi
+
+  if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
+    AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_getopt_gnu],
+      [# Even with POSIXLY_CORRECT, the GNU extension of leading '-' in the
+       # optstring is necessary for programs like m4 that have POSIX-mandated
+       # semantics for supporting options interspersed with files.
+       # Also, since getopt_long is a GNU extension, we require optind=0.
+       # Bash ties 'set -o posix' to a non-exported POSIXLY_CORRECT;
+       # so take care to revert to the correct (non-)export state.
+dnl GNU Coding Standards currently allow awk but not env; besides, env
+dnl is ambiguous with environment values that contain newlines.
+       gl_awk_probe='BEGIN { if ("POSIXLY_CORRECT" in ENVIRON) print "x" }'
+       case ${POSIXLY_CORRECT+x}`$AWK "$gl_awk_probe" </dev/null` in
+         xx) gl_had_POSIXLY_CORRECT=exported ;;
+         x)  gl_had_POSIXLY_CORRECT=yes      ;;
+         *)  gl_had_POSIXLY_CORRECT=         ;;
+       esac
+       POSIXLY_CORRECT=1
+       export POSIXLY_CORRECT
+       AC_RUN_IFELSE(
+        [AC_LANG_PROGRAM([[#include <getopt.h>
+                           #include <stddef.h>
+                           #include <string.h>
+           ]GL_NOCRASH[
+           ]], [[
+             int result = 0;
+
+             nocrash_init();
+
+             /* This code succeeds on glibc 2.8, OpenBSD 4.0, Cygwin, mingw,
+                and fails on Mac OS X 10.5, AIX 5.2, HP-UX 11, IRIX 6.5,
+                OSF/1 5.1, Solaris 10.  */
+             {
+               static char conftest[] = "conftest";
+               static char plus[] = "-+";
+               char *argv[3] = { conftest, plus, NULL };
+               opterr = 0;
+               if (getopt (2, argv, "+a") != '?')
+                 result |= 1;
+             }
+             /* This code succeeds on glibc 2.8, mingw,
+                and fails on Mac OS X 10.5, OpenBSD 4.0, AIX 5.2, HP-UX 11,
+                IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.5.x.  */
+             {
+               static char program[] = "program";
+               static char p[] = "-p";
+               static char foo[] = "foo";
+               static char bar[] = "bar";
+               char *argv[] = { program, p, foo, bar, NULL };
+
+               optind = 1;
+               if (getopt (4, argv, "p::") != 'p')
+                 result |= 2;
+               else if (optarg != NULL)
+                 result |= 4;
+               else if (getopt (4, argv, "p::") != -1)
+                 result |= 6;
+               else if (optind != 2)
+                 result |= 8;
+             }
+             /* This code succeeds on glibc 2.8 and fails on Cygwin 1.7.0.  */
+             {
+               static char program[] = "program";
+               static char foo[] = "foo";
+               static char p[] = "-p";
+               char *argv[] = { program, foo, p, NULL };
+               optind = 0;
+               if (getopt (3, argv, "-p") != 1)
+                 result |= 16;
+               else if (getopt (3, argv, "-p") != 'p')
+                 result |= 16;
+             }
+             /* This code fails on glibc 2.11.  */
+             {
+               static char program[] = "program";
+               static char b[] = "-b";
+               static char a[] = "-a";
+               char *argv[] = { program, b, a, NULL };
+               optind = opterr = 0;
+               if (getopt (3, argv, "+:a:b") != 'b')
+                 result |= 32;
+               else if (getopt (3, argv, "+:a:b") != ':')
+                 result |= 32;
+             }
+             /* This code dumps core on glibc 2.14.  */
+             {
+               static char program[] = "program";
+               static char w[] = "-W";
+               static char dummy[] = "dummy";
+               char *argv[] = { program, w, dummy, NULL };
+               optind = opterr = 1;
+               if (getopt (3, argv, "W;") != 'W')
+                 result |= 64;
+             }
+             return result;
+           ]])],
+        [gl_cv_func_getopt_gnu=yes],
+        [gl_cv_func_getopt_gnu=no],
+        [dnl Cross compiling.
+         dnl Assume the worst, even on glibc platforms.
+         dnl But obey --enable-cross-guesses.
+         gl_cv_func_getopt_gnu="$gl_cross_guess_normal"
+        ])
+       case $gl_had_POSIXLY_CORRECT in
+         exported) ;;
+         yes) AS_UNSET([POSIXLY_CORRECT]); POSIXLY_CORRECT=1 ;;
+         *) AS_UNSET([POSIXLY_CORRECT]) ;;
+       esac
+      ])
+    if test "$gl_cv_func_getopt_gnu" != yes; then
+      gl_replace_getopt=yes
+    else
+      AC_CACHE_CHECK([for working GNU getopt_long function],
+        [gl_cv_func_getopt_long_gnu],
+        [AC_RUN_IFELSE(
+           [AC_LANG_PROGRAM(
+              [[#include <getopt.h>
+                #include <stddef.h>
+                #include <string.h>
+              ]],
+              [[static const struct option long_options[] =
+                  {
+                    { "xtremely-",no_argument,       NULL, 1003 },
+                    { "xtra",     no_argument,       NULL, 1001 },
+                    { "xtreme",   no_argument,       NULL, 1002 },
+                    { "xtremely", no_argument,       NULL, 1003 },
+                    { NULL,       0,                 NULL, 0 }
+                  };
+                /* This code fails on OpenBSD 5.0.  */
+                {
+                  static char program[] = "program";
+                  static char xtremel[] = "--xtremel";
+                  char *argv[] = { program, xtremel, NULL };
+                  int option_index;
+                  optind = 1; opterr = 0;
+                  if (getopt_long (2, argv, "", long_options, &option_index) != 1003)
+                    return 1;
+                }
+                return 0;
+              ]])],
+           [gl_cv_func_getopt_long_gnu=yes],
+           [gl_cv_func_getopt_long_gnu=no],
+           [dnl Cross compiling. Guess no on OpenBSD, yes otherwise.
+            case "$host_os" in
+              openbsd*) gl_cv_func_getopt_long_gnu="guessing no";;
+              *)        gl_cv_func_getopt_long_gnu="guessing yes";;
+            esac
+           ])
+        ])
+      case "$gl_cv_func_getopt_long_gnu" in
+        *yes) ;;
+        *) gl_replace_getopt=yes ;;
+      esac
+    fi
+  fi
+])
+
+AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
+[
+  AC_CHECK_HEADERS_ONCE([sys/cdefs.h])
+  if test $ac_cv_header_sys_cdefs_h = yes; then
+    HAVE_SYS_CDEFS_H=1
+  else
+    HAVE_SYS_CDEFS_H=0
+  fi
+  AC_SUBST([HAVE_SYS_CDEFS_H])
+
+  AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
+    [Define to rpl_ if the getopt replacement functions and variables
+     should be used.])
+  GETOPT_H=getopt.h
+  GETOPT_CDEFS_H=getopt-cdefs.h
+  AC_SUBST([GETOPT_H])
+  AC_SUBST([GETOPT_CDEFS_H])
+])
diff --git a/src/grep/m4/getpagesize.m4 b/src/grep/m4/getpagesize.m4
new file mode 100644
index 0000000..7e61801
--- /dev/null
+++ b/src/grep/m4/getpagesize.m4
@@ -0,0 +1,49 @@
+# getpagesize.m4 serial 10
+dnl Copyright (C) 2002, 2004-2005, 2007, 2009-2021 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_GETPAGESIZE],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  gl_CHECK_FUNC_GETPAGESIZE
+  if test $gl_cv_func_getpagesize = no; then
+    HAVE_GETPAGESIZE=0
+    AC_CHECK_HEADERS([OS.h])
+    if test $ac_cv_header_OS_h = yes; then
+      HAVE_OS_H=1
+    fi
+    AC_CHECK_HEADERS([sys/param.h])
+    if test $ac_cv_header_sys_param_h = yes; then
+      HAVE_SYS_PARAM_H=1
+    fi
+  fi
+  case "$host_os" in
+    mingw*)
+      REPLACE_GETPAGESIZE=1
+      ;;
+  esac
+  dnl Also check whether it's declared.
+  dnl mingw has getpagesize() in libgcc.a but doesn't declare it.
+  AC_CHECK_DECL([getpagesize], , [HAVE_DECL_GETPAGESIZE=0])
+])
+
+dnl Tests whether the function getpagesize() exists.
+dnl Sets gl_cv_func_getpagesize.
+AC_DEFUN([gl_CHECK_FUNC_GETPAGESIZE],
+[
+  dnl We can't use AC_CHECK_FUNC here, because getpagesize() is defined as a
+  dnl static inline function when compiling for Android 4.4 or older.
+  AC_CACHE_CHECK([for getpagesize], [gl_cv_func_getpagesize],
+    [AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <unistd.h>]],
+          [[return getpagesize();]])
+       ],
+       [gl_cv_func_getpagesize=yes],
+       [gl_cv_func_getpagesize=no])
+    ])
+])
diff --git a/src/grep/m4/getprogname.m4 b/src/grep/m4/getprogname.m4
new file mode 100644
index 0000000..65917d6
--- /dev/null
+++ b/src/grep/m4/getprogname.m4
@@ -0,0 +1,43 @@
+# getprogname.m4 - check for getprogname or replacements for it
+
+# Copyright (C) 2016-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 4
+
+AC_DEFUN([gl_FUNC_GETPROGNAME],
+[
+  AC_CHECK_FUNCS_ONCE([getprogname getexecname])
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  ac_found=0
+  AC_CHECK_DECLS([program_invocation_name], [ac_found=1], [],
+    [#include <errno.h>])
+  AC_CHECK_DECLS([program_invocation_short_name], [ac_found=1], [],
+    [#include <errno.h>])
+  AC_CHECK_DECLS([__argv], [ac_found=1], [], [#include <stdlib.h>])
+
+  # Incur the cost of this test only if none of the above worked.
+  if test $ac_found = 0; then
+    # On OpenBSD 5.1, using the global __progname variable appears to be
+    # the only way to implement getprogname.
+    AC_CACHE_CHECK([whether __progname is defined in default libraries],
+      [gl_cv_var___progname],
+      [
+        gl_cv_var___progname=
+        AC_LINK_IFELSE(
+          [AC_LANG_PROGRAM(
+            [[extern char *__progname;]],
+            [[return *__progname;]]
+          )],
+          [gl_cv_var___progname=yes]
+        )
+      ]
+    )
+    if test "$gl_cv_var___progname" = yes; then
+      AC_DEFINE([HAVE_VAR___PROGNAME], 1,
+        [Define if you have a global __progname variable])
+    fi
+  fi
+])
diff --git a/src/grep/m4/gettext.m4 b/src/grep/m4/gettext.m4
new file mode 100644
index 0000000..8d1f066
--- /dev/null
+++ b/src/grep/m4/gettext.m4
@@ -0,0 +1,401 @@
+# gettext.m4 serial 66 (gettext-0.18.2)
+dnl Copyright (C) 1995-2013 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2006, 2008-2010.
+
+dnl Macro to add for using GNU gettext.
+
+dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
+dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
+dnl    default (if it is not specified or empty) is 'no-libtool'.
+dnl    INTLSYMBOL should be 'external' for packages with no intl directory,
+dnl    and 'no-libtool' or 'use-libtool' for packages with an intl directory.
+dnl    If INTLSYMBOL is 'use-libtool', then a libtool library
+dnl    $(top_builddir)/intl/libintl.la will be created (shared and/or static,
+dnl    depending on --{enable,disable}-{shared,static} and on the presence of
+dnl    AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
+dnl    $(top_builddir)/intl/libintl.a will be created.
+dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
+dnl    implementations (in libc or libintl) without the ngettext() function
+dnl    will be ignored.  If NEEDSYMBOL is specified and is
+dnl    'need-formatstring-macros', then GNU gettext implementations that don't
+dnl    support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
+dnl INTLDIR is used to find the intl libraries.  If empty,
+dnl    the value '$(top_builddir)/intl/' is used.
+dnl
+dnl The result of the configuration is one of three cases:
+dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
+dnl    and used.
+dnl    Catalog format: GNU --> install in $(datadir)
+dnl    Catalog extension: .mo after installation, .gmo in source tree
+dnl 2) GNU gettext has been found in the system's C library.
+dnl    Catalog format: GNU --> install in $(datadir)
+dnl    Catalog extension: .mo after installation, .gmo in source tree
+dnl 3) No internationalization, always use English msgid.
+dnl    Catalog format: none
+dnl    Catalog extension: none
+dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
+dnl The use of .gmo is historical (it was needed to avoid overwriting the
+dnl GNU format catalogs when building on a platform with an X/Open gettext),
+dnl but we keep it in order not to force irrelevant filename changes on the
+dnl maintainers.
+dnl
+AC_DEFUN([AM_GNU_GETTEXT],
+[
+  dnl Argument checking.
+  ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [no-libtool], , [ifelse([$1], [use-libtool], ,
+    [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
+])])])])])
+  ifelse(ifelse([$1], [], [old])[]ifelse([$1], [no-libtool], [old]), [old],
+    [AC_DIAGNOSE([obsolete], [Use of AM_GNU_GETTEXT without [external] argument is deprecated.])])
+  ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], ,
+    [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
+])])])])
+  define([gt_included_intl],
+    ifelse([$1], [external],
+      ifdef([AM_GNU_GETTEXT_][INTL_SUBDIR], [yes], [no]),
+      [yes]))
+  define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], []))
+  gt_NEEDS_INIT
+  AM_GNU_GETTEXT_NEED([$2])
+
+  AC_REQUIRE([AM_PO_SUBDIRS])dnl
+  ifelse(gt_included_intl, yes, [
+    AC_REQUIRE([AM_INTL_SUBDIR])dnl
+  ])
+
+  dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+
+  dnl Sometimes libintl requires libiconv, so first search for libiconv.
+  dnl Ideally we would do this search only after the
+  dnl      if test "$USE_NLS" = "yes"; then
+  dnl        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
+  dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
+  dnl the configure script would need to contain the same shell code
+  dnl again, outside any 'if'. There are two solutions:
+  dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
+  dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
+  dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
+  dnl documented, we avoid it.
+  ifelse(gt_included_intl, yes, , [
+    AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
+  ])
+
+  dnl Sometimes, on Mac OS X, libintl requires linking with CoreFoundation.
+  gt_INTL_MACOSX
+
+  dnl Set USE_NLS.
+  AC_REQUIRE([AM_NLS])
+
+  ifelse(gt_included_intl, yes, [
+    BUILD_INCLUDED_LIBINTL=no
+    USE_INCLUDED_LIBINTL=no
+  ])
+  LIBINTL=
+  LTLIBINTL=
+  POSUB=
+
+  dnl Add a version number to the cache macros.
+  case " $gt_needs " in
+    *" need-formatstring-macros "*) gt_api_version=3 ;;
+    *" need-ngettext "*) gt_api_version=2 ;;
+    *) gt_api_version=1 ;;
+  esac
+  gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc"
+  gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl"
+
+  dnl If we use NLS figure out what method
+  if test "$USE_NLS" = "yes"; then
+    gt_use_preinstalled_gnugettext=no
+    ifelse(gt_included_intl, yes, [
+      AC_MSG_CHECKING([whether included gettext is requested])
+      AC_ARG_WITH([included-gettext],
+        [  --with-included-gettext use the GNU gettext library included here],
+        nls_cv_force_use_gnu_gettext=$withval,
+        nls_cv_force_use_gnu_gettext=no)
+      AC_MSG_RESULT([$nls_cv_force_use_gnu_gettext])
+
+      nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
+      if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
+    ])
+        dnl User does not insist on using GNU NLS library.  Figure out what
+        dnl to use.  If GNU gettext is available we use this.  Else we have
+        dnl to fall back to GNU NLS library.
+
+        if test $gt_api_version -ge 3; then
+          gt_revision_test_code='
+#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
+#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
+#endif
+changequote(,)dnl
+typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
+changequote([,])dnl
+'
+        else
+          gt_revision_test_code=
+        fi
+        if test $gt_api_version -ge 2; then
+          gt_expression_test_code=' + * ngettext ("", "", 0)'
+        else
+          gt_expression_test_code=
+        fi
+
+        AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc],
+         [AC_LINK_IFELSE(
+            [AC_LANG_PROGRAM(
+               [[
+#include <libintl.h>
+$gt_revision_test_code
+extern int _nl_msg_cat_cntr;
+extern int *_nl_domain_bindings;
+               ]],
+               [[
+bindtextdomain ("", "");
+return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_domain_bindings
+               ]])],
+            [eval "$gt_func_gnugettext_libc=yes"],
+            [eval "$gt_func_gnugettext_libc=no"])])
+
+        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
+          dnl Sometimes libintl requires libiconv, so first search for libiconv.
+          ifelse(gt_included_intl, yes, , [
+            AM_ICONV_LINK
+          ])
+          dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
+          dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
+          dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
+          dnl even if libiconv doesn't exist.
+          AC_LIB_LINKFLAGS_BODY([intl])
+          AC_CACHE_CHECK([for GNU gettext in libintl],
+            [$gt_func_gnugettext_libintl],
+           [gt_save_CPPFLAGS="$CPPFLAGS"
+            CPPFLAGS="$CPPFLAGS $INCINTL"
+            gt_save_LIBS="$LIBS"
+            LIBS="$LIBS $LIBINTL"
+            dnl Now see whether libintl exists and does not depend on libiconv.
+            AC_LINK_IFELSE(
+              [AC_LANG_PROGRAM(
+                 [[
+#include <libintl.h>
+$gt_revision_test_code
+extern int _nl_msg_cat_cntr;
+extern
+#ifdef __cplusplus
+"C"
+#endif
+const char *_nl_expand_alias (const char *);
+                 ]],
+                 [[
+bindtextdomain ("", "");
+return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")
+                 ]])],
+              [eval "$gt_func_gnugettext_libintl=yes"],
+              [eval "$gt_func_gnugettext_libintl=no"])
+            dnl Now see whether libintl exists and depends on libiconv.
+            if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
+              LIBS="$LIBS $LIBICONV"
+              AC_LINK_IFELSE(
+                [AC_LANG_PROGRAM(
+                   [[
+#include <libintl.h>
+$gt_revision_test_code
+extern int _nl_msg_cat_cntr;
+extern
+#ifdef __cplusplus
+"C"
+#endif
+const char *_nl_expand_alias (const char *);
+                   ]],
+                   [[
+bindtextdomain ("", "");
+return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")
+                   ]])],
+                [LIBINTL="$LIBINTL $LIBICONV"
+                 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
+                 eval "$gt_func_gnugettext_libintl=yes"
+                ])
+            fi
+            CPPFLAGS="$gt_save_CPPFLAGS"
+            LIBS="$gt_save_LIBS"])
+        fi
+
+        dnl If an already present or preinstalled GNU gettext() is found,
+        dnl use it.  But if this macro is used in GNU gettext, and GNU
+        dnl gettext is already preinstalled in libintl, we update this
+        dnl libintl.  (Cf. the install rule in intl/Makefile.in.)
+        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
+           || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
+                && test "$PACKAGE" != gettext-runtime \
+                && test "$PACKAGE" != gettext-tools; }; then
+          gt_use_preinstalled_gnugettext=yes
+        else
+          dnl Reset the values set by searching for libintl.
+          LIBINTL=
+          LTLIBINTL=
+          INCINTL=
+        fi
+
+    ifelse(gt_included_intl, yes, [
+        if test "$gt_use_preinstalled_gnugettext" != "yes"; then
+          dnl GNU gettext is not found in the C library.
+          dnl Fall back on included GNU gettext library.
+          nls_cv_use_gnu_gettext=yes
+        fi
+      fi
+
+      if test "$nls_cv_use_gnu_gettext" = "yes"; then
+        dnl Mark actions used to generate GNU NLS library.
+        BUILD_INCLUDED_LIBINTL=yes
+        USE_INCLUDED_LIBINTL=yes
+        LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
+        LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
+        LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
+      fi
+
+      CATOBJEXT=
+      if test "$gt_use_preinstalled_gnugettext" = "yes" \
+         || test "$nls_cv_use_gnu_gettext" = "yes"; then
+        dnl Mark actions to use GNU gettext tools.
+        CATOBJEXT=.gmo
+      fi
+    ])
+
+    if test -n "$INTL_MACOSX_LIBS"; then
+      if test "$gt_use_preinstalled_gnugettext" = "yes" \
+         || test "$nls_cv_use_gnu_gettext" = "yes"; then
+        dnl Some extra flags are needed during linking.
+        LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
+        LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
+      fi
+    fi
+
+    if test "$gt_use_preinstalled_gnugettext" = "yes" \
+       || test "$nls_cv_use_gnu_gettext" = "yes"; then
+      AC_DEFINE([ENABLE_NLS], [1],
+        [Define to 1 if translation of program messages to the user's native language
+   is requested.])
+    else
+      USE_NLS=no
+    fi
+  fi
+
+  AC_MSG_CHECKING([whether to use NLS])
+  AC_MSG_RESULT([$USE_NLS])
+  if test "$USE_NLS" = "yes"; then
+    AC_MSG_CHECKING([where the gettext function comes from])
+    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
+      if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
+        gt_source="external libintl"
+      else
+        gt_source="libc"
+      fi
+    else
+      gt_source="included intl directory"
+    fi
+    AC_MSG_RESULT([$gt_source])
+  fi
+
+  if test "$USE_NLS" = "yes"; then
+
+    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
+      if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
+        AC_MSG_CHECKING([how to link with libintl])
+        AC_MSG_RESULT([$LIBINTL])
+        AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
+      fi
+
+      dnl For backward compatibility. Some packages may be using this.
+      AC_DEFINE([HAVE_GETTEXT], [1],
+       [Define if the GNU gettext() function is already present or preinstalled.])
+      AC_DEFINE([HAVE_DCGETTEXT], [1],
+       [Define if the GNU dcgettext() function is already present or preinstalled.])
+    fi
+
+    dnl We need to process the po/ directory.
+    POSUB=po
+  fi
+
+  ifelse(gt_included_intl, yes, [
+    dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
+    dnl to 'yes' because some of the testsuite requires it.
+    if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
+      BUILD_INCLUDED_LIBINTL=yes
+    fi
+
+    dnl Make all variables we use known to autoconf.
+    AC_SUBST([BUILD_INCLUDED_LIBINTL])
+    AC_SUBST([USE_INCLUDED_LIBINTL])
+    AC_SUBST([CATOBJEXT])
+
+    dnl For backward compatibility. Some configure.ins may be using this.
+    nls_cv_header_intl=
+    nls_cv_header_libgt=
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    DATADIRNAME=share
+    AC_SUBST([DATADIRNAME])
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    INSTOBJEXT=.mo
+    AC_SUBST([INSTOBJEXT])
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    GENCAT=gencat
+    AC_SUBST([GENCAT])
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    INTLOBJS=
+    if test "$USE_INCLUDED_LIBINTL" = yes; then
+      INTLOBJS="\$(GETTOBJS)"
+    fi
+    AC_SUBST([INTLOBJS])
+
+    dnl Enable libtool support if the surrounding package wishes it.
+    INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
+    AC_SUBST([INTL_LIBTOOL_SUFFIX_PREFIX])
+  ])
+
+  dnl For backward compatibility. Some Makefiles may be using this.
+  INTLLIBS="$LIBINTL"
+  AC_SUBST([INTLLIBS])
+
+  dnl Make all documented variables known to autoconf.
+  AC_SUBST([LIBINTL])
+  AC_SUBST([LTLIBINTL])
+  AC_SUBST([POSUB])
+])
+
+
+dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
+m4_define([gt_NEEDS_INIT],
+[
+  m4_divert_text([DEFAULTS], [gt_needs=])
+  m4_define([gt_NEEDS_INIT], [])
+])
+
+
+dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
+AC_DEFUN([AM_GNU_GETTEXT_NEED],
+[
+  m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
+])
+
+
+dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
+AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
diff --git a/src/grep/m4/gettimeofday.m4 b/src/grep/m4/gettimeofday.m4
new file mode 100644
index 0000000..37c5440
--- /dev/null
+++ b/src/grep/m4/gettimeofday.m4
@@ -0,0 +1,69 @@
+# serial 29
+
+# Copyright (C) 2001-2003, 2005, 2007, 2009-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl From Jim Meyering.
+
+AC_DEFUN([gl_FUNC_GETTIMEOFDAY],
+[
+  AC_REQUIRE([gl_SYS_TIME_H_DEFAULTS])
+  AC_REQUIRE([AC_C_RESTRICT])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_SYS_TIME_H])
+  AC_CHECK_FUNCS_ONCE([gettimeofday])
+
+  gl_gettimeofday_timezone=void
+  if test $ac_cv_func_gettimeofday != yes; then
+    HAVE_GETTIMEOFDAY=0
+  else
+    AC_CACHE_CHECK([for gettimeofday with POSIX signature],
+      [gl_cv_func_gettimeofday_posix_signature],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <sys/time.h>
+              struct timeval c;
+              int gettimeofday (struct timeval *restrict, void *restrict);
+            ]],
+            [[/* glibc uses struct timezone * rather than the POSIX void *
+                 if _GNU_SOURCE is defined.  However, since the only portable
+                 use of gettimeofday uses NULL as the second parameter, and
+                 since the glibc definition is actually more typesafe, it is
+                 not worth wrapping this to get a compliant signature.  */
+              int (*f) (struct timeval *restrict, void *restrict)
+                = gettimeofday;
+              int x = f (&c, 0);
+              return !(x | c.tv_sec | c.tv_usec);
+            ]])],
+          [gl_cv_func_gettimeofday_posix_signature=yes],
+          [AC_COMPILE_IFELSE(
+            [AC_LANG_PROGRAM(
+              [[#include <sys/time.h>
+int gettimeofday (struct timeval *restrict, struct timezone *restrict);
+              ]])],
+            [gl_cv_func_gettimeofday_posix_signature=almost],
+            [gl_cv_func_gettimeofday_posix_signature=no])])])
+    if test $gl_cv_func_gettimeofday_posix_signature = almost; then
+      gl_gettimeofday_timezone='struct timezone'
+    elif test $gl_cv_func_gettimeofday_posix_signature != yes; then
+      REPLACE_GETTIMEOFDAY=1
+    fi
+    dnl If we override 'struct timeval', we also have to override gettimeofday.
+    if test $REPLACE_STRUCT_TIMEVAL = 1; then
+      REPLACE_GETTIMEOFDAY=1
+    fi
+    dnl On mingw, the original gettimeofday has only a precision of 15.6
+    dnl milliseconds. So override it.
+    case "$host_os" in
+      mingw*) REPLACE_GETTIMEOFDAY=1 ;;
+    esac
+  fi
+  AC_DEFINE_UNQUOTED([GETTIMEOFDAY_TIMEZONE], [$gl_gettimeofday_timezone],
+    [Define this to 'void' or 'struct timezone' to match the system's
+     declaration of the second argument to gettimeofday.])
+])
+
+# Prerequisites of lib/gettimeofday.c.
+AC_DEFUN([gl_PREREQ_GETTIMEOFDAY], [:])
diff --git a/src/grep/m4/gnulib-common.m4 b/src/grep/m4/gnulib-common.m4
new file mode 100644
index 0000000..c801b3d
--- /dev/null
+++ b/src/grep/m4/gnulib-common.m4
@@ -0,0 +1,827 @@
+# gnulib-common.m4 serial 67
+dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_PREREQ([2.62])
+
+# gl_COMMON
+# is expanded unconditionally through gnulib-tool magic.
+AC_DEFUN([gl_COMMON], [
+  dnl Use AC_REQUIRE here, so that the code is expanded once only.
+  AC_REQUIRE([gl_00GNULIB])
+  AC_REQUIRE([gl_COMMON_BODY])
+  AC_REQUIRE([gl_ZZGNULIB])
+])
+AC_DEFUN([gl_COMMON_BODY], [
+  AH_VERBATIM([_GL_GNUC_PREREQ],
+[/* True if the compiler says it groks GNU C version MAJOR.MINOR.  */
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define _GL_GNUC_PREREQ(major, minor) \
+    ((major) < __GNUC__ + ((minor) <= __GNUC_MINOR__))
+#else
+# define _GL_GNUC_PREREQ(major, minor) 0
+#endif
+])
+  AH_VERBATIM([_Noreturn],
+[/* The _Noreturn keyword of C11.  */
+#ifndef _Noreturn
+# if (defined __cplusplus \
+      && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
+          || (defined _MSC_VER && 1900 <= _MSC_VER)) \
+      && 0)
+    /* [[noreturn]] is not practically usable, because with it the syntax
+         extern _Noreturn void func (...);
+       would not be valid; such a declaration would only be valid with 'extern'
+       and '_Noreturn' swapped, or without the 'extern' keyword.  However, some
+       AIX system header files and several gnulib header files use precisely
+       this syntax with 'extern'.  */
+#  define _Noreturn [[noreturn]]
+# elif ((!defined __cplusplus || defined __clang__) \
+        && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
+            || (!defined __STRICT_ANSI__ \
+                && (_GL_GNUC_PREREQ (4, 7) \
+                    || (defined __apple_build_version__ \
+                        ? 6000000 <= __apple_build_version__ \
+                        : 3 < __clang_major__ + (5 <= __clang_minor__))))))
+   /* _Noreturn works as-is.  */
+# elif _GL_GNUC_PREREQ (2, 8) || defined __clang__ || 0x5110 <= __SUNPRO_C
+#  define _Noreturn __attribute__ ((__noreturn__))
+# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
+#  define _Noreturn __declspec (noreturn)
+# else
+#  define _Noreturn
+# endif
+#endif
+])
+  AH_VERBATIM([isoc99_inline],
+[/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports
+   the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of
+   earlier versions), but does not display it by setting __GNUC_STDC_INLINE__.
+   __APPLE__ && __MACH__ test for Mac OS X.
+   __APPLE_CC__ tests for the Apple compiler and its version.
+   __STDC_VERSION__ tests for the C99 mode.  */
+#if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__
+# define __GNUC_STDC_INLINE__ 1
+#endif])
+  AH_VERBATIM([attribute],
+[/* Attributes.  */
+#if (defined __has_attribute \
+     && (!defined __clang_minor__ \
+         || 3 < __clang_major__ + (5 <= __clang_minor__)))
+# define _GL_HAS_ATTRIBUTE(attr) __has_attribute (__##attr##__)
+#else
+# define _GL_HAS_ATTRIBUTE(attr) _GL_ATTR_##attr
+# define _GL_ATTR_alloc_size _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_always_inline _GL_GNUC_PREREQ (3, 2)
+# define _GL_ATTR_artificial _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_cold _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_const _GL_GNUC_PREREQ (2, 95)
+# define _GL_ATTR_deprecated _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_diagnose_if 0
+# define _GL_ATTR_error _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_externally_visible _GL_GNUC_PREREQ (4, 1)
+# define _GL_ATTR_fallthrough _GL_GNUC_PREREQ (7, 0)
+# define _GL_ATTR_format _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_leaf _GL_GNUC_PREREQ (4, 6)
+# define _GL_ATTR_malloc _GL_GNUC_PREREQ (3, 0)
+# ifdef _ICC
+#  define _GL_ATTR_may_alias 0
+# else
+#  define _GL_ATTR_may_alias _GL_GNUC_PREREQ (3, 3)
+# endif
+# define _GL_ATTR_noinline _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_nonnull _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_nonstring _GL_GNUC_PREREQ (8, 0)
+# define _GL_ATTR_nothrow _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_packed _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_pure _GL_GNUC_PREREQ (2, 96)
+# define _GL_ATTR_returns_nonnull _GL_GNUC_PREREQ (4, 9)
+# define _GL_ATTR_sentinel _GL_GNUC_PREREQ (4, 0)
+# define _GL_ATTR_unused _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4)
+#endif
+
+#ifdef __has_c_attribute
+# define _GL_HAS_C_ATTRIBUTE(attr) __has_c_attribute (__##attr##__)
+#else
+# define _GL_HAS_C_ATTRIBUTE(attr) 0
+#endif
+
+]dnl There is no _GL_ATTRIBUTE_ALIGNED; use stdalign's _Alignas instead.
+[
+#if _GL_HAS_ATTRIBUTE (alloc_size)
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args))
+#else
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (always_inline)
+# define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__))
+#else
+# define _GL_ATTRIBUTE_ALWAYS_INLINE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (artificial)
+# define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__))
+#else
+# define _GL_ATTRIBUTE_ARTIFICIAL
+#endif
+
+/* Avoid __attribute__ ((cold)) on MinGW; see thread starting at
+   <https://lists.gnu.org/r/emacs-devel/2019-04/msg01152.html>.
+   Also, Oracle Studio 12.6 requires 'cold' not '__cold__'.  */
+#if _GL_HAS_ATTRIBUTE (cold) && !defined __MINGW32__
+# ifndef __SUNPRO_C
+#  define _GL_ATTRIBUTE_COLD __attribute__ ((__cold__))
+# else
+#  define _GL_ATTRIBUTE_COLD __attribute__ ((cold))
+# endif
+#else
+# define _GL_ATTRIBUTE_COLD
+#endif
+
+#if _GL_HAS_ATTRIBUTE (const)
+# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
+#else
+# define _GL_ATTRIBUTE_CONST
+#endif
+
+/* _GL_ATTRIBUTE_DEALLOC (F, I) is for functions returning pointers
+   that can be freed by passing them as the Ith argument to the
+   function F.  _GL_ATTRIBUTE_DEALLOC_FREE is for functions that
+   return pointers that can be freed via 'free'; it can be used
+   only after including stdlib.h.  These macros cannot be used on
+   inline functions.  */
+#if _GL_GNUC_PREREQ (11, 0)
+# define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i)))
+#else
+# define _GL_ATTRIBUTE_DEALLOC(f, i)
+#endif
+#define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (free, 1)
+
+#if _GL_HAS_C_ATTRIBUTE (deprecated)
+# define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]]
+#elif _GL_HAS_ATTRIBUTE (deprecated)
+# define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
+#else
+# define _GL_ATTRIBUTE_DEPRECATED
+#endif
+
+#if _GL_HAS_ATTRIBUTE (error)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__error__ (msg)))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__warning__ (msg)))
+#elif _GL_HAS_ATTRIBUTE (diagnose_if)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__diagnose_if__ (1, msg, "error")))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__diagnose_if__ (1, msg, "warning")))
+#else
+# define _GL_ATTRIBUTE_ERROR(msg)
+# define _GL_ATTRIBUTE_WARNING(msg)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (externally_visible)
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((externally_visible))
+#else
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
+#endif
+
+/* FALLTHROUGH is special, because it always expands to something.  */
+#if _GL_HAS_C_ATTRIBUTE (fallthrough)
+# define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]]
+#elif _GL_HAS_ATTRIBUTE (fallthrough)
+# define _GL_ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__))
+#else
+# define _GL_ATTRIBUTE_FALLTHROUGH ((void) 0)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (format)
+# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+#else
+# define _GL_ATTRIBUTE_FORMAT(spec)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (leaf)
+# define _GL_ATTRIBUTE_LEAF __attribute__ ((__leaf__))
+#else
+# define _GL_ATTRIBUTE_LEAF
+#endif
+
+#if _GL_HAS_ATTRIBUTE (malloc)
+# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
+#else
+# define _GL_ATTRIBUTE_MALLOC
+#endif
+
+/* Oracle Studio 12.6 mishandles may_alias despite __has_attribute OK.  */
+#if _GL_HAS_ATTRIBUTE (may_alias) && !defined __SUNPRO_C
+# define _GL_ATTRIBUTE_MAY_ALIAS __attribute__ ((__may_alias__))
+#else
+# define _GL_ATTRIBUTE_MAY_ALIAS
+#endif
+
+#if _GL_HAS_C_ATTRIBUTE (maybe_unused)
+# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]]
+#else
+# define _GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_UNUSED
+#endif
+/* Earlier spellings of this macro.  */
+#define _UNUSED_PARAMETER_ _GL_ATTRIBUTE_MAYBE_UNUSED
+
+#if _GL_HAS_C_ATTRIBUTE (nodiscard)
+# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]]
+#elif _GL_HAS_ATTRIBUTE (warn_unused_result)
+# define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__))
+#else
+# define _GL_ATTRIBUTE_NODISCARD
+#endif
+
+#if _GL_HAS_ATTRIBUTE (noinline)
+# define _GL_ATTRIBUTE_NOINLINE __attribute__ ((__noinline__))
+#else
+# define _GL_ATTRIBUTE_NOINLINE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (nonnull)
+# define _GL_ATTRIBUTE_NONNULL(args) __attribute__ ((__nonnull__ args))
+#else
+# define _GL_ATTRIBUTE_NONNULL(args)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (nonstring)
+# define _GL_ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__))
+#else
+# define _GL_ATTRIBUTE_NONSTRING
+#endif
+
+/* There is no _GL_ATTRIBUTE_NORETURN; use _Noreturn instead.  */
+
+#if _GL_HAS_ATTRIBUTE (nothrow) && !defined __cplusplus
+# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__))
+#else
+# define _GL_ATTRIBUTE_NOTHROW
+#endif
+
+#if _GL_HAS_ATTRIBUTE (packed)
+# define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__))
+#else
+# define _GL_ATTRIBUTE_PACKED
+#endif
+
+#if _GL_HAS_ATTRIBUTE (pure)
+# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+#else
+# define _GL_ATTRIBUTE_PURE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (returns_nonnull)
+# define _GL_ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__))
+#else
+# define _GL_ATTRIBUTE_RETURNS_NONNULL
+#endif
+
+#if _GL_HAS_ATTRIBUTE (sentinel)
+# define _GL_ATTRIBUTE_SENTINEL(pos) __attribute__ ((__sentinel__ pos))
+#else
+# define _GL_ATTRIBUTE_SENTINEL(pos)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (unused)
+# define _GL_ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#else
+# define _GL_ATTRIBUTE_UNUSED
+#endif
+/* Earlier spellings of this macro.  */
+#define _GL_UNUSED _GL_ATTRIBUTE_UNUSED
+
+]dnl There is no _GL_ATTRIBUTE_VISIBILITY; see m4/visibility.m4 instead.
+[
+/* To support C++ as well as C, use _GL_UNUSED_LABEL with trailing ';'.  */
+#if !defined __cplusplus || _GL_GNUC_PREREQ (4, 5)
+# define _GL_UNUSED_LABEL _GL_ATTRIBUTE_UNUSED
+#else
+# define _GL_UNUSED_LABEL
+#endif
+])
+  AH_VERBATIM([async_safe],
+[/* The _GL_ASYNC_SAFE marker should be attached to functions that are
+   signal handlers (for signals other than SIGABRT, SIGPIPE) or can be
+   invoked from such signal handlers.  Such functions have some restrictions:
+     * All functions that it calls should be marked _GL_ASYNC_SAFE as well,
+       or should be listed as async-signal-safe in POSIX
+       <https://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_04>
+       section 2.4.3.  Note that malloc(), sprintf(), and fwrite(), in
+       particular, are NOT async-signal-safe.
+     * All memory locations (variables and struct fields) that these functions
+       access must be marked 'volatile'.  This holds for both read and write
+       accesses.  Otherwise the compiler might optimize away stores to and
+       reads from such locations that occur in the program, depending on its
+       data flow analysis.  For example, when the program contains a loop
+       that is intended to inspect a variable set from within a signal handler
+           while (!signal_occurred)
+             ;
+       the compiler is allowed to transform this into an endless loop if the
+       variable 'signal_occurred' is not declared 'volatile'.
+   Additionally, recall that:
+     * A signal handler should not modify errno (except if it is a handler
+       for a fatal signal and ends by raising the same signal again, thus
+       provoking the termination of the process).  If it invokes a function
+       that may clobber errno, it needs to save and restore the value of
+       errno.  */
+#define _GL_ASYNC_SAFE
+])
+  AH_VERBATIM([micro_optimizations],
+[/* _GL_CMP (n1, n2) performs a three-valued comparison on n1 vs. n2, where
+   n1 and n2 are expressions without side effects, that evaluate to real
+   numbers (excluding NaN).
+   It returns
+     1  if n1 > n2
+     0  if n1 == n2
+     -1 if n1 < n2
+   The naïve code   (n1 > n2 ? 1 : n1 < n2 ? -1 : 0)  produces a conditional
+   jump with nearly all GCC versions up to GCC 10.
+   This variant     (n1 < n2 ? -1 : n1 > n2)  produces a conditional with many
+   GCC versions up to GCC 9.
+   The better code  (n1 > n2) - (n1 < n2)  from Hacker's Delight § 2-9
+   avoids conditional jumps in all GCC versions >= 3.4.  */
+#define _GL_CMP(n1, n2) (((n1) > (n2)) - ((n1) < (n2)))
+])
+  dnl Hint which direction to take regarding cross-compilation guesses:
+  dnl When a user installs a program on a platform they are not intimately
+  dnl familiar with, --enable-cross-guesses=conservative is the appropriate
+  dnl choice.  It implements the "If we don't know, assume the worst" principle.
+  dnl However, when an operating system developer (on a platform which is not
+  dnl yet known to gnulib) builds packages for their platform, they want to
+  dnl expose, not hide, possible platform bugs; in this case,
+  dnl --enable-cross-guesses=risky is the appropriate choice.
+  dnl Sets the variables
+  dnl gl_cross_guess_normal    (to be used when 'yes' is good and 'no' is bad),
+  dnl gl_cross_guess_inverted  (to be used when 'no' is good and 'yes' is bad).
+  AC_ARG_ENABLE([cross-guesses],
+    [AS_HELP_STRING([--enable-cross-guesses={conservative|risky}],
+       [specify policy for cross-compilation guesses])],
+    [if test "x$enableval" != xconservative && test "x$enableval" != xrisky; then
+       AC_MSG_WARN([invalid argument supplied to --enable-cross-guesses])
+       enableval=conservative
+     fi
+     gl_cross_guesses="$enableval"],
+    [gl_cross_guesses=conservative])
+  if test $gl_cross_guesses = risky; then
+    gl_cross_guess_normal="guessing yes"
+    gl_cross_guess_inverted="guessing no"
+  else
+    gl_cross_guess_normal="guessing no"
+    gl_cross_guess_inverted="guessing yes"
+  fi
+  dnl Preparation for running test programs:
+  dnl Tell glibc to write diagnostics from -D_FORTIFY_SOURCE=2 to stderr, not
+  dnl to /dev/tty, so they can be redirected to log files.  Such diagnostics
+  dnl arise e.g., in the macros gl_PRINTF_DIRECTIVE_N, gl_SNPRINTF_DIRECTIVE_N.
+  LIBC_FATAL_STDERR_=1
+  export LIBC_FATAL_STDERR_
+])
+
+# gl_MODULE_INDICATOR_INIT_VARIABLE([variablename])
+# gl_MODULE_INDICATOR_INIT_VARIABLE([variablename], [initialvalue])
+# initializes the shell variable that indicates the presence of the given module
+# as a C preprocessor expression.
+AC_DEFUN([gl_MODULE_INDICATOR_INIT_VARIABLE],
+[
+  GL_MODULE_INDICATOR_PREFIX[]_[$1]=m4_if([$2], , [0], [$2])
+  AC_SUBST(GL_MODULE_INDICATOR_PREFIX[]_[$1])
+])
+
+# gl_MODULE_INDICATOR_CONDITION
+# expands to a C preprocessor expression that evaluates to 1 or 0, depending
+# whether a gnulib module that has been requested shall be considered present
+# or not.
+m4_define([gl_MODULE_INDICATOR_CONDITION], [1])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE([modulename])
+# sets the shell variable that indicates the presence of the given module to
+# a C preprocessor expression that will evaluate to 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE],
+[
+  gl_MODULE_INDICATOR_SET_VARIABLE_AUX(
+    [GL_MODULE_INDICATOR_PREFIX[]_GNULIB_[]m4_translit([[$1]],
+                                                       [abcdefghijklmnopqrstuvwxyz./-],
+                                                       [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])],
+    [gl_MODULE_INDICATOR_CONDITION])
+])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE_AUX([variable])
+# modifies the shell variable to include the gl_MODULE_INDICATOR_CONDITION.
+# The shell variable's value is a C preprocessor expression that evaluates
+# to 0 or 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX],
+[
+  m4_if(m4_defn([gl_MODULE_INDICATOR_CONDITION]), [1],
+    [
+     dnl Simplify the expression VALUE || 1 to 1.
+     $1=1
+    ],
+    [gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([$1],
+                                             [gl_MODULE_INDICATOR_CONDITION])])
+])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([variable], [condition])
+# modifies the shell variable to include the given condition.  The shell
+# variable's value is a C preprocessor expression that evaluates to 0 or 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR],
+[
+  dnl Simplify the expression 1 || CONDITION to 1.
+  if test "$[]$1" != 1; then
+    dnl Simplify the expression 0 || CONDITION to CONDITION.
+    if test "$[]$1" = 0; then
+      $1=$2
+    else
+      $1="($[]$1 || $2)"
+    fi
+  fi
+])
+
+# gl_MODULE_INDICATOR([modulename])
+# defines a C macro indicating the presence of the given module
+# in a location where it can be used.
+#                                             |  Value  |   Value   |
+#                                             | in lib/ | in tests/ |
+# --------------------------------------------+---------+-----------+
+# Module present among main modules:          |    1    |     1     |
+# --------------------------------------------+---------+-----------+
+# Module present among tests-related modules: |    0    |     1     |
+# --------------------------------------------+---------+-----------+
+# Module not present at all:                  |    0    |     0     |
+# --------------------------------------------+---------+-----------+
+AC_DEFUN([gl_MODULE_INDICATOR],
+[
+  AC_DEFINE_UNQUOTED([GNULIB_]m4_translit([[$1]],
+      [abcdefghijklmnopqrstuvwxyz./-],
+      [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]),
+    [gl_MODULE_INDICATOR_CONDITION],
+    [Define to a C preprocessor expression that evaluates to 1 or 0,
+     depending whether the gnulib module $1 shall be considered present.])
+])
+
+# gl_MODULE_INDICATOR_FOR_TESTS([modulename])
+# defines a C macro indicating the presence of the given module
+# in lib or tests. This is useful to determine whether the module
+# should be tested.
+#                                             |  Value  |   Value   |
+#                                             | in lib/ | in tests/ |
+# --------------------------------------------+---------+-----------+
+# Module present among main modules:          |    1    |     1     |
+# --------------------------------------------+---------+-----------+
+# Module present among tests-related modules: |    1    |     1     |
+# --------------------------------------------+---------+-----------+
+# Module not present at all:                  |    0    |     0     |
+# --------------------------------------------+---------+-----------+
+AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS],
+[
+  AC_DEFINE([GNULIB_TEST_]m4_translit([[$1]],
+      [abcdefghijklmnopqrstuvwxyz./-],
+      [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],
+    [Define to 1 when the gnulib module $1 should be tested.])
+])
+
+# gl_ASSERT_NO_GNULIB_POSIXCHECK
+# asserts that there will never be a need to #define GNULIB_POSIXCHECK.
+# and thereby enables an optimization of configure and config.h.
+# Used by Emacs.
+AC_DEFUN([gl_ASSERT_NO_GNULIB_POSIXCHECK],
+[
+  dnl Override gl_WARN_ON_USE_PREPARE.
+  dnl But hide this definition from 'aclocal'.
+  AC_DEFUN([gl_W][ARN_ON_USE_PREPARE], [])
+])
+
+# gl_ASSERT_NO_GNULIB_TESTS
+# asserts that there will be no gnulib tests in the scope of the configure.ac
+# and thereby enables an optimization of config.h.
+# Used by Emacs.
+AC_DEFUN([gl_ASSERT_NO_GNULIB_TESTS],
+[
+  dnl Override gl_MODULE_INDICATOR_FOR_TESTS.
+  AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS], [])
+])
+
+# Test whether <features.h> exists.
+# Set HAVE_FEATURES_H.
+AC_DEFUN([gl_FEATURES_H],
+[
+  AC_CHECK_HEADERS_ONCE([features.h])
+  if test $ac_cv_header_features_h = yes; then
+    HAVE_FEATURES_H=1
+  else
+    HAVE_FEATURES_H=0
+  fi
+  AC_SUBST([HAVE_FEATURES_H])
+])
+
+# gl_PROG_CC_C99
+# Modifies the value of the shell variable CC in an attempt to make $CC
+# understand ISO C99 source code.
+AC_DEFUN([gl_PROG_CC_C99],
+[
+  dnl Just use AC_PROG_CC_C99.
+  dnl When AC_PROG_CC_C99 and AC_PROG_CC_STDC are used together, the substituted
+  dnl value of CC will contain the C99 enabling options twice. But this is only
+  dnl a cosmetic problem.
+  dnl With Autoconf >= 2.70, use AC_PROG_CC since it implies AC_PROG_CC_C99;
+  dnl this avoids a "warning: The macro `AC_PROG_CC_C99' is obsolete."
+  m4_version_prereq([2.70],
+    [AC_REQUIRE([AC_PROG_CC])],
+    [AC_REQUIRE([AC_PROG_CC_C99])])
+])
+
+# gl_PROG_AR_RANLIB
+# Determines the values for AR, ARFLAGS, RANLIB that fit with the compiler.
+# The user can set the variables AR, ARFLAGS, RANLIB if he wants to override
+# the values.
+AC_DEFUN([gl_PROG_AR_RANLIB],
+[
+  dnl Minix 3 comes with two toolchains: The Amsterdam Compiler Kit compiler
+  dnl as "cc", and GCC as "gcc". They have different object file formats and
+  dnl library formats. In particular, the GNU binutils programs ar and ranlib
+  dnl produce libraries that work only with gcc, not with cc.
+  AC_REQUIRE([AC_PROG_CC])
+  dnl The '][' hides this use from 'aclocal'.
+  AC_BEFORE([$0], [A][M_PROG_AR])
+  AC_CACHE_CHECK([for Minix Amsterdam compiler], [gl_cv_c_amsterdam_compiler],
+    [
+      AC_EGREP_CPP([Amsterdam],
+        [
+#ifdef __ACK__
+Amsterdam
+#endif
+        ],
+        [gl_cv_c_amsterdam_compiler=yes],
+        [gl_cv_c_amsterdam_compiler=no])
+    ])
+
+  dnl Don't compete with AM_PROG_AR's decision about AR/ARFLAGS if we are not
+  dnl building with __ACK__.
+  if test $gl_cv_c_amsterdam_compiler = yes; then
+    if test -z "$AR"; then
+      AR='cc -c.a'
+    fi
+    if test -z "$ARFLAGS"; then
+      ARFLAGS='-o'
+    fi
+  else
+    dnl AM_PROG_AR was added in automake v1.11.2.  AM_PROG_AR does not AC_SUBST
+    dnl ARFLAGS variable (it is filed into Makefile.in directly by automake
+    dnl script on-demand, if not specified by ./configure of course).
+    dnl Don't AC_REQUIRE the AM_PROG_AR otherwise the code for __ACK__ above
+    dnl will be ignored.  Also, pay attention to call AM_PROG_AR in else block
+    dnl because AM_PROG_AR is written so it could re-set AR variable even for
+    dnl __ACK__.  It may seem like its easier to avoid calling the macro here,
+    dnl but we need to AC_SUBST both AR/ARFLAGS (thus those must have some good
+    dnl default value and automake should usually know them).
+    dnl
+    dnl The '][' hides this use from 'aclocal'.
+    m4_ifdef([A][M_PROG_AR], [A][M_PROG_AR], [:])
+  fi
+
+  dnl In case the code above has not helped with setting AR/ARFLAGS, use
+  dnl Automake-documented default values for AR and ARFLAGS, but prefer
+  dnl ${host}-ar over ar (useful for cross-compiling).
+  AC_CHECK_TOOL([AR], [ar], [ar])
+  if test -z "$ARFLAGS"; then
+    ARFLAGS='cr'
+  fi
+
+  AC_SUBST([AR])
+  AC_SUBST([ARFLAGS])
+  if test -z "$RANLIB"; then
+    if test $gl_cv_c_amsterdam_compiler = yes; then
+      RANLIB=':'
+    else
+      dnl Use the ranlib program if it is available.
+      AC_PROG_RANLIB
+    fi
+  fi
+  AC_SUBST([RANLIB])
+])
+
+# AC_C_RESTRICT
+# This definition is copied from post-2.70 Autoconf and overrides the
+# AC_C_RESTRICT macro from autoconf 2.60..2.70.
+m4_version_prereq([2.70.1], [], [
+AC_DEFUN([AC_C_RESTRICT],
+[AC_CACHE_CHECK([for C/C++ restrict keyword], [ac_cv_c_restrict],
+  [ac_cv_c_restrict=no
+   # Put '__restrict__' first, to avoid problems with glibc and non-GCC; see:
+   # https://lists.gnu.org/archive/html/bug-autoconf/2016-02/msg00006.html
+   # Put 'restrict' last, because C++ lacks it.
+   for ac_kw in __restrict__ __restrict _Restrict restrict; do
+     AC_COMPILE_IFELSE(
+      [AC_LANG_PROGRAM(
+         [[typedef int *int_ptr;
+           int foo (int_ptr $ac_kw ip) { return ip[0]; }
+           int bar (int [$ac_kw]); /* Catch GCC bug 14050.  */
+           int bar (int ip[$ac_kw]) { return ip[0]; }
+         ]],
+         [[int s[1];
+           int *$ac_kw t = s;
+           t[0] = 0;
+           return foo (t) + bar (t);
+         ]])],
+      [ac_cv_c_restrict=$ac_kw])
+     test "$ac_cv_c_restrict" != no && break
+   done
+  ])
+ AH_VERBATIM([restrict],
+[/* Define to the equivalent of the C99 'restrict' keyword, or to
+   nothing if this is not supported.  Do not define if restrict is
+   supported only directly.  */
+#undef restrict
+/* Work around a bug in older versions of Sun C++, which did not
+   #define __restrict__ or support _Restrict or __restrict__
+   even though the corresponding Sun C compiler ended up with
+   "#define restrict _Restrict" or "#define restrict __restrict__"
+   in the previous line.  This workaround can be removed once
+   we assume Oracle Developer Studio 12.5 (2016) or later.  */
+#if defined __SUNPRO_CC && !defined __RESTRICT && !defined __restrict__
+# define _Restrict
+# define __restrict__
+#endif])
+ case $ac_cv_c_restrict in
+   restrict) ;;
+   no) AC_DEFINE([restrict], []) ;;
+   *)  AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;
+ esac
+])# AC_C_RESTRICT
+])
+
+# gl_BIGENDIAN
+# is like AC_C_BIGENDIAN, except that it can be AC_REQUIREd.
+# Note that AC_REQUIRE([AC_C_BIGENDIAN]) does not work reliably because some
+# macros invoke AC_C_BIGENDIAN with arguments.
+AC_DEFUN([gl_BIGENDIAN],
+[
+  AC_C_BIGENDIAN
+])
+
+# A temporary file descriptor.
+# Must be less than 10, because dash 0.5.8 does not support redirections
+# with multi-digit file descriptors.
+m4_define([GL_TMP_FD], 9)
+
+# gl_SILENT(command)
+# executes command, but without the normal configure output.
+# This is useful when you want to invoke AC_CACHE_CHECK (or AC_CHECK_FUNC etc.)
+# inside another AC_CACHE_CHECK.
+AC_DEFUN([gl_SILENT],
+[
+  exec GL_TMP_FD>&AS_MESSAGE_FD AS_MESSAGE_FD>/dev/null
+  $1
+  exec AS_MESSAGE_FD>&GL_TMP_FD GL_TMP_FD>&-
+])
+
+# gl_CACHE_VAL_SILENT(cache-id, command-to-set-it)
+# is like AC_CACHE_VAL(cache-id, command-to-set-it), except that it does not
+# output a spurious "(cached)" mark in the midst of other configure output.
+# This macro should be used instead of AC_CACHE_VAL when it is not surrounded
+# by an AC_MSG_CHECKING/AC_MSG_RESULT pair.
+AC_DEFUN([gl_CACHE_VAL_SILENT],
+[
+  gl_SILENT([
+    AC_CACHE_VAL([$1], [$2])
+  ])
+])
+
+# gl_CC_ALLOW_WARNINGS
+# sets and substitutes a variable GL_CFLAG_ALLOW_WARNINGS, to a $(CC) option
+# that reverts a preceding '-Werror' option, if available.
+# This is expected to be '-Wno-error' on gcc, clang (except clang/MSVC), xlclang
+# and empty otherwise.
+AC_DEFUN([gl_CC_ALLOW_WARNINGS],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_CACHE_CHECK([for C compiler option to allow warnings],
+    [gl_cv_cc_wallow],
+    [rm -f conftest*
+     echo 'int dummy;' > conftest.c
+     AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c 2>conftest1.err]) >/dev/null
+     AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -Wno-error -c conftest.c 2>conftest2.err]) >/dev/null
+     dnl Test the number of error output lines, because AIX xlc accepts the
+     dnl option '-Wno-error', just to produce a warning
+     dnl "Option -Wno-error was incorrectly specified. The option will be ignored."
+     dnl afterwards.
+     if test $? = 0 && test `wc -l < conftest1.err` = `wc -l < conftest2.err`; then
+       gl_cv_cc_wallow='-Wno-error'
+     else
+       gl_cv_cc_wallow=none
+     fi
+     rm -f conftest*
+    ])
+  case "$gl_cv_cc_wallow" in
+    none) GL_CFLAG_ALLOW_WARNINGS='' ;;
+    *)    GL_CFLAG_ALLOW_WARNINGS="$gl_cv_cc_wallow" ;;
+  esac
+  AC_SUBST([GL_CFLAG_ALLOW_WARNINGS])
+])
+
+# gl_CXX_ALLOW_WARNINGS
+# sets and substitutes a variable GL_CXXFLAG_ALLOW_WARNINGS, to a $(CC) option
+# that reverts a preceding '-Werror' option, if available.
+AC_DEFUN([gl_CXX_ALLOW_WARNINGS],
+[
+  dnl Requires AC_PROG_CXX or gl_PROG_ANSI_CXX.
+  if test -n "$CXX" && test "$CXX" != no; then
+    AC_CACHE_CHECK([for C++ compiler option to allow warnings],
+      [gl_cv_cxx_wallow],
+      [rm -f conftest*
+       echo 'int dummy;' > conftest.cc
+       AC_TRY_COMMAND([${CXX-c++} $CXXFLAGS $CPPFLAGS -c conftest.cc 2>conftest1.err]) >/dev/null
+       AC_TRY_COMMAND([${CXX-c++} $CXXFLAGS $CPPFLAGS -Wno-error -c conftest.cc 2>conftest2.err]) >/dev/null
+       dnl Test the number of error output lines, because AIX xlC accepts the
+       dnl option '-Wno-error', just to produce a warning
+       dnl "Option -Wno-error was incorrectly specified. The option will be ignored."
+       dnl afterwards.
+       if test $? = 0 && test `wc -l < conftest1.err` = `wc -l < conftest2.err`; then
+         gl_cv_cxx_wallow='-Wno-error'
+       else
+         gl_cv_cxx_wallow=none
+       fi
+       rm -f conftest*
+      ])
+    case "$gl_cv_cxx_wallow" in
+      none) GL_CXXFLAG_ALLOW_WARNINGS='' ;;
+      *)    GL_CXXFLAG_ALLOW_WARNINGS="$gl_cv_cxx_wallow" ;;
+    esac
+  else
+    GL_CXXFLAG_ALLOW_WARNINGS=''
+  fi
+  AC_SUBST([GL_CXXFLAG_ALLOW_WARNINGS])
+])
+
+dnl Expands to some code for use in .c programs that, on native Windows, defines
+dnl the Microsoft deprecated alias function names to the underscore-prefixed
+dnl actual function names. With this macro, these function names are available
+dnl without linking with '-loldnames' and without generating warnings.
+dnl Usage: Use it after all system header files are included.
+dnl          #include <...>
+dnl          #include <...>
+dnl          ]GL_MDA_DEFINES[
+dnl          ...
+AC_DEFUN([GL_MDA_DEFINES],[
+AC_REQUIRE([_GL_MDA_DEFINES])
+[$gl_mda_defines]
+])
+AC_DEFUN([_GL_MDA_DEFINES],
+[gl_mda_defines='
+#if defined _WIN32 && !defined __CYGWIN__
+#define access    _access
+#define chdir     _chdir
+#define chmod     _chmod
+#define close     _close
+#define creat     _creat
+#define dup       _dup
+#define dup2      _dup2
+#define ecvt      _ecvt
+#define execl     _execl
+#define execle    _execle
+#define execlp    _execlp
+#define execv     _execv
+#define execve    _execve
+#define execvp    _execvp
+#define execvpe   _execvpe
+#define fcloseall _fcloseall
+#define fcvt      _fcvt
+#define fdopen    _fdopen
+#define fileno    _fileno
+#define gcvt      _gcvt
+#define getcwd    _getcwd
+#define getpid    _getpid
+#define getw      _getw
+#define isatty    _isatty
+#define j0        _j0
+#define j1        _j1
+#define jn        _jn
+#define lfind     _lfind
+#define lsearch   _lsearch
+#define lseek     _lseek
+#define memccpy   _memccpy
+#define mkdir     _mkdir
+#define mktemp    _mktemp
+#define open      _open
+#define putenv    _putenv
+#define putw      _putw
+#define read      _read
+#define rmdir     _rmdir
+#define strdup    _strdup
+#define swab      _swab
+#define tempnam   _tempnam
+#define tzset     _tzset
+#define umask     _umask
+#define unlink    _unlink
+#define utime     _utime
+#define wcsdup    _wcsdup
+#define write     _write
+#define y0        _y0
+#define y1        _y1
+#define yn        _yn
+#endif
+'
+])
diff --git a/src/grep/m4/gnulib-comp.m4 b/src/grep/m4/gnulib-comp.m4
new file mode 100644
index 0000000..cda87e0
--- /dev/null
+++ b/src/grep/m4/gnulib-comp.m4
@@ -0,0 +1,2623 @@
+# DO NOT EDIT! GENERATED AUTOMATICALLY!
+# Copyright (C) 2002-2021 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file.  If not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License,
+# this file may be distributed as part of a program that
+# contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+#
+# This file represents the compiled summary of the specification in
+# gnulib-cache.m4. It lists the computed macro invocations that need
+# to be invoked from configure.ac.
+# In projects that use version control, this file can be treated like
+# other built files.
+
+
+# This macro should be invoked from ./configure.ac, in the section
+# "Checks for programs", right after AC_PROG_CC, and certainly before
+# any checks for libraries, header files, types and library functions.
+AC_DEFUN([gl_EARLY],
+[
+  m4_pattern_forbid([^gl_[A-Z]])dnl the gnulib macro namespace
+  m4_pattern_allow([^gl_ES$])dnl a valid locale name
+  m4_pattern_allow([^gl_LIBOBJS$])dnl a variable
+  m4_pattern_allow([^gl_LTLIBOBJS$])dnl a variable
+
+  # Pre-early section.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_REQUIRE([gl_PROG_AR_RANLIB])
+
+  AC_REQUIRE([AM_PROG_CC_C_O])
+  # Code from module absolute-header:
+  # Code from module accept:
+  # Code from module accept-tests:
+  # Code from module alignof:
+  # Code from module alignof-tests:
+  # Code from module alloca:
+  # Code from module alloca-opt:
+  # Code from module alloca-opt-tests:
+  # Code from module announce-gen:
+  # Code from module argmatch:
+  # Code from module argmatch-tests:
+  # Code from module arpa_inet:
+  # Code from module arpa_inet-tests:
+  # Code from module assert:
+  # Code from module assure:
+  # Code from module at-internal:
+  # Code from module attribute:
+  # Code from module basename-lgpl:
+  # Code from module binary-io:
+  # Code from module binary-io-tests:
+  # Code from module bind:
+  # Code from module bind-tests:
+  # Code from module bitrotate:
+  # Code from module bitrotate-tests:
+  # Code from module btowc:
+  # Code from module btowc-tests:
+  # Code from module builtin-expect:
+  # Code from module c-ctype:
+  # Code from module c-ctype-tests:
+  # Code from module c-stack:
+  # Code from module c-stack-tests:
+  # Code from module c-strcase:
+  # Code from module c-strcase-tests:
+  # Code from module c-strcaseeq:
+  # Code from module c99:
+  # Code from module calloc-gnu:
+  # Code from module calloc-gnu-tests:
+  # Code from module calloc-posix:
+  # Code from module chdir:
+  # Code from module chdir-long:
+  # Code from module chdir-tests:
+  # Code from module cloexec:
+  # Code from module cloexec-tests:
+  # Code from module close:
+  # Code from module close-stream:
+  # Code from module close-tests:
+  # Code from module closedir:
+  # Code from module closeout:
+  # Code from module configmake:
+  # Code from module connect:
+  # Code from module connect-tests:
+  # Code from module ctype:
+  # Code from module ctype-tests:
+  # Code from module cycle-check:
+  # Code from module d-ino:
+  # Code from module d-type:
+  # Code from module dev-ino:
+  # Code from module dfa:
+  # Code from module dfa-tests:
+  # Code from module dirent:
+  # Code from module dirent-tests:
+  # Code from module dirfd:
+  # Code from module dirname-lgpl:
+  # Code from module do-release-commit-and-tag:
+  # Code from module double-slash-root:
+  # Code from module dup:
+  # Code from module dup-tests:
+  # Code from module dup2:
+  # Code from module dup2-tests:
+  # Code from module dynarray:
+  # Code from module dynarray-tests:
+  # Code from module environ:
+  # Code from module environ-tests:
+  # Code from module errno:
+  # Code from module errno-tests:
+  # Code from module error:
+  # Code from module exclude:
+  # Code from module exclude-tests:
+  # Code from module exitfail:
+  # Code from module extensions:
+  # Code from module extern-inline:
+  # Code from module fchdir:
+  # Code from module fchdir-tests:
+  # Code from module fcntl:
+  # Code from module fcntl-h:
+  # Code from module fcntl-h-tests:
+  # Code from module fcntl-safer:
+  # Code from module fcntl-safer-tests:
+  # Code from module fcntl-tests:
+  # Code from module fd-hook:
+  # Code from module fd-safer-flag:
+  # Code from module fdl:
+  # Code from module fdopen:
+  # Code from module fdopen-tests:
+  # Code from module fdopendir:
+  # Code from module fdopendir-tests:
+  # Code from module fgetc-tests:
+  # Code from module filename:
+  # Code from module filenamecat-lgpl:
+  # Code from module flexmember:
+  # Code from module float:
+  # Code from module float-tests:
+  # Code from module fnmatch:
+  # Code from module fnmatch-h:
+  # Code from module fnmatch-h-tests:
+  # Code from module fnmatch-tests:
+  # Code from module fopen:
+  # Code from module fopen-gnu:
+  # Code from module fopen-gnu-tests:
+  # Code from module fopen-tests:
+  # Code from module fpending:
+  # Code from module fpending-tests:
+  # Code from module fpieee:
+  AC_REQUIRE([gl_FP_IEEE])
+  # Code from module fpucw:
+  # Code from module fputc-tests:
+  # Code from module fread-tests:
+  # Code from module free-posix:
+  # Code from module free-posix-tests:
+  # Code from module fstat:
+  # Code from module fstat-tests:
+  # Code from module fstatat:
+  # Code from module fstatat-tests:
+  # Code from module ftruncate:
+  # Code from module ftruncate-tests:
+  # Code from module fts:
+  # Code from module fwrite-tests:
+  # Code from module gendocs:
+  # Code from module getcwd-lgpl:
+  # Code from module getcwd-lgpl-tests:
+  # Code from module getdtablesize:
+  # Code from module getdtablesize-tests:
+  # Code from module getopt-gnu:
+  # Code from module getopt-gnu-tests:
+  # Code from module getopt-posix:
+  # Code from module getopt-posix-tests:
+  # Code from module getpagesize:
+  # Code from module getprogname:
+  # Code from module getprogname-tests:
+  # Code from module gettext-h:
+  # Code from module gettimeofday:
+  # Code from module gettimeofday-tests:
+  # Code from module git-version-gen:
+  # Code from module gitlog-to-changelog:
+  # Code from module gnu-web-doc-update:
+  # Code from module gnumakefile:
+  # Code from module gnupload:
+  # Code from module gperf:
+  # Code from module hard-locale:
+  # Code from module hard-locale-tests:
+  # Code from module hash:
+  # Code from module hash-pjw:
+  # Code from module hash-tests:
+  # Code from module havelib:
+  # Code from module host-cpu-c-abi:
+  # Code from module i-ring:
+  # Code from module i-ring-tests:
+  # Code from module ialloc:
+  # Code from module iconv:
+  # Code from module iconv-h:
+  # Code from module iconv-h-tests:
+  # Code from module iconv-tests:
+  # Code from module iconv_open:
+  # Code from module idx:
+  # Code from module ignore-value:
+  # Code from module ignore-value-tests:
+  # Code from module include_next:
+  # Code from module inet_pton:
+  # Code from module inet_pton-tests:
+  # Code from module inline:
+  # Code from module intprops:
+  # Code from module intprops-tests:
+  # Code from module inttostr:
+  # Code from module inttostr-tests:
+  # Code from module inttypes:
+  # Code from module inttypes-incomplete:
+  # Code from module inttypes-tests:
+  # Code from module ioctl:
+  # Code from module ioctl-tests:
+  # Code from module isatty:
+  # Code from module isatty-tests:
+  # Code from module isblank:
+  # Code from module isblank-tests:
+  # Code from module iswblank:
+  # Code from module iswblank-tests:
+  # Code from module iswctype:
+  # Code from module iswdigit:
+  # Code from module iswdigit-tests:
+  # Code from module iswxdigit:
+  # Code from module iswxdigit-tests:
+  # Code from module langinfo:
+  # Code from module langinfo-tests:
+  # Code from module largefile:
+  AC_REQUIRE([AC_SYS_LARGEFILE])
+  AC_REQUIRE([gl_YEAR2038_EARLY])
+  # Code from module libc-config:
+  # Code from module limits-h:
+  # Code from module limits-h-tests:
+  # Code from module listen:
+  # Code from module listen-tests:
+  # Code from module localcharset:
+  # Code from module localcharset-tests:
+  # Code from module locale:
+  # Code from module locale-tests:
+  # Code from module localeconv:
+  # Code from module localeconv-tests:
+  # Code from module localename:
+  # Code from module localename-tests:
+  # Code from module lock:
+  # Code from module lseek:
+  # Code from module lseek-tests:
+  # Code from module lstat:
+  # Code from module lstat-tests:
+  # Code from module maintainer-makefile:
+  # Code from module malloc-gnu:
+  # Code from module malloc-gnu-tests:
+  # Code from module malloc-posix:
+  # Code from module malloca:
+  # Code from module malloca-tests:
+  # Code from module manywarnings:
+  # Code from module mbchar:
+  # Code from module mbiter:
+  # Code from module mbrlen:
+  # Code from module mbrtowc:
+  # Code from module mbscasecmp:
+  # Code from module mbscasecmp-tests:
+  # Code from module mbsinit:
+  # Code from module mbsinit-tests:
+  # Code from module mbslen:
+  # Code from module mbsrtowcs:
+  # Code from module mbsrtowcs-tests:
+  # Code from module mbsstr:
+  # Code from module mbsstr-tests:
+  # Code from module mbtowc:
+  # Code from module mbuiter:
+  # Code from module memchr:
+  # Code from module memchr-tests:
+  # Code from module memchr2:
+  # Code from module memchr2-tests:
+  # Code from module mempcpy:
+  # Code from module memrchr:
+  # Code from module memrchr-tests:
+  # Code from module minmax:
+  # Code from module msvc-inval:
+  # Code from module msvc-nothrow:
+  # Code from module multiarch:
+  # Code from module nanosleep:
+  # Code from module nanosleep-tests:
+  # Code from module netinet_in:
+  # Code from module netinet_in-tests:
+  # Code from module nl_langinfo:
+  # Code from module nl_langinfo-tests:
+  # Code from module nocrash:
+  # Code from module obstack:
+  # Code from module open:
+  # Code from module open-tests:
+  # Code from module openat:
+  # Code from module openat-die:
+  # Code from module openat-h:
+  # Code from module openat-safer:
+  # Code from module openat-safer-tests:
+  # Code from module openat-tests:
+  # Code from module opendir:
+  # Code from module opendirat:
+  # Code from module pathmax:
+  # Code from module pathmax-tests:
+  # Code from module perl:
+  # Code from module perror:
+  # Code from module perror-tests:
+  # Code from module pipe-posix:
+  # Code from module pipe-posix-tests:
+  # Code from module propername:
+  # Code from module pthread-h:
+  gl_ANYTHREADLIB_EARLY
+  # Code from module pthread-h-tests:
+  # Code from module pthread-thread:
+  # Code from module pthread-thread-tests:
+  # Code from module pthread_sigmask:
+  # Code from module pthread_sigmask-tests:
+  # Code from module putenv:
+  # Code from module quote:
+  # Code from module quotearg:
+  # Code from module quotearg-simple:
+  # Code from module quotearg-simple-tests:
+  # Code from module raise:
+  # Code from module raise-tests:
+  # Code from module rawmemchr:
+  # Code from module rawmemchr-tests:
+  # Code from module read:
+  # Code from module read-tests:
+  # Code from module readdir:
+  # Code from module readme-release:
+  # Code from module realloc-gnu:
+  # Code from module realloc-gnu-tests:
+  # Code from module realloc-posix:
+  # Code from module reallocarray:
+  # Code from module reallocarray-tests:
+  # Code from module regex:
+  # Code from module regex-tests:
+  # Code from module safe-read:
+  # Code from module same-inode:
+  # Code from module save-cwd:
+  # Code from module sched:
+  # Code from module sched-tests:
+  # Code from module select:
+  # Code from module select-tests:
+  # Code from module setenv:
+  # Code from module setenv-tests:
+  # Code from module setlocale:
+  # Code from module setlocale-null:
+  # Code from module setlocale-null-tests:
+  # Code from module setlocale-tests:
+  # Code from module setsockopt:
+  # Code from module setsockopt-tests:
+  # Code from module sigaction:
+  # Code from module sigaction-tests:
+  # Code from module signal-h:
+  # Code from module signal-h-tests:
+  # Code from module sigprocmask:
+  # Code from module sigprocmask-tests:
+  # Code from module sigsegv:
+  # Code from module sigsegv-tests:
+  # Code from module size_max:
+  # Code from module sleep:
+  # Code from module sleep-tests:
+  # Code from module snippet/_Noreturn:
+  # Code from module snippet/arg-nonnull:
+  # Code from module snippet/c++defs:
+  # Code from module snippet/warn-on-use:
+  # Code from module snprintf:
+  # Code from module snprintf-tests:
+  # Code from module socket:
+  # Code from module socketlib:
+  # Code from module sockets:
+  # Code from module sockets-tests:
+  # Code from module socklen:
+  # Code from module ssize_t:
+  # Code from module stat:
+  # Code from module stat-tests:
+  # Code from module stat-time:
+  # Code from module stat-time-tests:
+  # Code from module std-gnu11:
+  # Code from module stdalign:
+  # Code from module stdalign-tests:
+  # Code from module stdarg:
+  dnl Some compilers (e.g., AIX 5.3 cc) need to be in c99 mode
+  dnl for the builtin va_copy to work.  gl_PROG_CC_C99 arranges for this.
+  gl_PROG_CC_C99
+  # Code from module stdarg-tests:
+  # Code from module stdbool:
+  # Code from module stdbool-tests:
+  # Code from module stddef:
+  # Code from module stddef-tests:
+  # Code from module stdint:
+  # Code from module stdint-tests:
+  # Code from module stdio:
+  # Code from module stdio-tests:
+  # Code from module stdlib:
+  # Code from module stdlib-tests:
+  # Code from module stpcpy:
+  # Code from module strdup-posix:
+  # Code from module streq:
+  # Code from module strerror:
+  # Code from module strerror-override:
+  # Code from module strerror-tests:
+  # Code from module strerror_r-posix:
+  # Code from module strerror_r-posix-tests:
+  # Code from module striconv:
+  # Code from module striconv-tests:
+  # Code from module string:
+  # Code from module string-tests:
+  # Code from module strnlen:
+  # Code from module strnlen-tests:
+  # Code from module strnlen1:
+  # Code from module strstr:
+  # Code from module strstr-simple:
+  # Code from module strstr-tests:
+  # Code from module strtoimax:
+  # Code from module strtoimax-tests:
+  # Code from module strtoll:
+  # Code from module strtoll-tests:
+  # Code from module strtoull:
+  # Code from module strtoull-tests:
+  # Code from module strtoumax:
+  # Code from module strtoumax-tests:
+  # Code from module symlink:
+  # Code from module symlink-tests:
+  # Code from module sys_ioctl:
+  # Code from module sys_ioctl-tests:
+  # Code from module sys_select:
+  # Code from module sys_select-tests:
+  # Code from module sys_socket:
+  # Code from module sys_socket-tests:
+  # Code from module sys_stat:
+  # Code from module sys_stat-tests:
+  # Code from module sys_time:
+  # Code from module sys_time-tests:
+  # Code from module sys_types:
+  # Code from module sys_types-tests:
+  # Code from module sys_uio:
+  # Code from module sys_uio-tests:
+  # Code from module test-framework-sh:
+  # Code from module test-framework-sh-tests:
+  # Code from module thread:
+  # Code from module thread-optim:
+  # Code from module thread-tests:
+  # Code from module threadlib:
+  gl_THREADLIB_EARLY
+  # Code from module time:
+  # Code from module time-tests:
+  # Code from module trim:
+  # Code from module unistd:
+  # Code from module unistd-safer:
+  # Code from module unistd-safer-tests:
+  # Code from module unistd-tests:
+  # Code from module unistr/base:
+  # Code from module unistr/u8-mbtoucr:
+  # Code from module unistr/u8-mbtoucr-tests:
+  # Code from module unistr/u8-uctomb:
+  # Code from module unistr/u8-uctomb-tests:
+  # Code from module unitypes:
+  # Code from module uniwidth/base:
+  # Code from module uniwidth/width:
+  # Code from module uniwidth/width-tests:
+  # Code from module unlocked-io:
+  # Code from module unlocked-io-internal:
+  # Code from module unsetenv:
+  # Code from module unsetenv-tests:
+  # Code from module update-copyright:
+  # Code from module useless-if-before-free:
+  # Code from module vasnprintf:
+  # Code from module vasnprintf-tests:
+  # Code from module vc-list-files:
+  # Code from module vc-list-files-tests:
+  # Code from module verify:
+  # Code from module verify-tests:
+  # Code from module version-etc:
+  # Code from module version-etc-fsf:
+  # Code from module version-etc-tests:
+  # Code from module warnings:
+  # Code from module wchar:
+  # Code from module wchar-tests:
+  # Code from module wcrtomb:
+  # Code from module wcrtomb-tests:
+  # Code from module wctob:
+  # Code from module wctomb:
+  # Code from module wctype-h:
+  # Code from module wctype-h-tests:
+  # Code from module wcwidth:
+  # Code from module wcwidth-tests:
+  # Code from module windows-mutex:
+  # Code from module windows-once:
+  # Code from module windows-recmutex:
+  # Code from module windows-rwlock:
+  # Code from module windows-stat-inodes:
+  # Code from module windows-stat-override:
+  # Code from module windows-thread:
+  # Code from module windows-tls:
+  # Code from module wmemchr:
+  # Code from module wmempcpy:
+  # Code from module xalloc:
+  # Code from module xalloc-die:
+  # Code from module xalloc-die-tests:
+  # Code from module xalloc-oversized:
+  # Code from module xbinary-io:
+  # Code from module xsize:
+  # Code from module xstriconv:
+  # Code from module xstrtoimax:
+  # Code from module xstrtoimax-tests:
+  # Code from module xstrtol:
+  # Code from module xstrtol-error:
+  # Code from module xstrtol-tests:
+])
+
+# This macro should be invoked from ./configure.ac, in the section
+# "Check for header files, types and library functions".
+AC_DEFUN([gl_INIT],
+[
+  AM_CONDITIONAL([GL_COND_LIBTOOL], [false])
+  gl_cond_libtool=false
+  gl_libdeps=
+  gl_ltlibdeps=
+  gl_m4_base='m4'
+  m4_pushdef([AC_LIBOBJ], m4_defn([gl_LIBOBJ]))
+  m4_pushdef([AC_REPLACE_FUNCS], m4_defn([gl_REPLACE_FUNCS]))
+  m4_pushdef([AC_LIBSOURCES], m4_defn([gl_LIBSOURCES]))
+  m4_pushdef([gl_LIBSOURCES_LIST], [])
+  m4_pushdef([gl_LIBSOURCES_DIR], [])
+  m4_pushdef([GL_MACRO_PREFIX], [gl])
+  m4_pushdef([GL_MODULE_INDICATOR_PREFIX], [GL])
+  gl_COMMON
+  gl_source_base='lib'
+  gl_FUNC_ALLOCA
+  gl_ASSERT
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  gl_FUNC_BTOWC
+  if test $HAVE_BTOWC = 0 || test $REPLACE_BTOWC = 1; then
+    AC_LIBOBJ([btowc])
+    gl_PREREQ_BTOWC
+  fi
+  gl_WCHAR_MODULE_INDICATOR([btowc])
+  gl___BUILTIN_EXPECT
+  gl_C_STACK
+  gl_FUNC_CALLOC_GNU
+  if test $REPLACE_CALLOC = 1; then
+    AC_LIBOBJ([calloc])
+  fi
+  gl_FUNC_CALLOC_POSIX
+  if test $REPLACE_CALLOC = 1; then
+    AC_LIBOBJ([calloc])
+  fi
+  gl_STDLIB_MODULE_INDICATOR([calloc-posix])
+  gl_UNISTD_MODULE_INDICATOR([chdir])
+  gl_FUNC_CHDIR_LONG
+  if test $gl_cv_have_unlimited_file_name_length = no; then
+    AC_LIBOBJ([chdir-long])
+    gl_PREREQ_CHDIR_LONG
+  fi
+  gl_MODULE_INDICATOR_FOR_TESTS([cloexec])
+  gl_FUNC_CLOSE
+  if test $REPLACE_CLOSE = 1; then
+    AC_LIBOBJ([close])
+  fi
+  gl_UNISTD_MODULE_INDICATOR([close])
+  gl_MODULE_INDICATOR([close-stream])
+  gl_FUNC_CLOSEDIR
+  if test $HAVE_CLOSEDIR = 0 || test $REPLACE_CLOSEDIR = 1; then
+    AC_LIBOBJ([closedir])
+  fi
+  gl_DIRENT_MODULE_INDICATOR([closedir])
+  gl_CONFIGMAKE_PREP
+  gl_CTYPE_H
+  gl_CTYPE_H_REQUIRE_DEFAULTS
+  gl_CYCLE_CHECK
+  gl_CHECK_TYPE_STRUCT_DIRENT_D_INO
+  gl_CHECK_TYPE_STRUCT_DIRENT_D_TYPE
+  AC_REQUIRE([AC_C_INLINE])
+  gl_DIRENT_H
+  gl_DIRENT_H_REQUIRE_DEFAULTS
+  gl_FUNC_DIRFD
+  if test $ac_cv_func_dirfd = no && test $gl_cv_func_dirfd_macro = no \
+     || test $REPLACE_DIRFD = 1; then
+    AC_LIBOBJ([dirfd])
+    gl_PREREQ_DIRFD
+  fi
+  gl_DIRENT_MODULE_INDICATOR([dirfd])
+  gl_DOUBLE_SLASH_ROOT
+  gl_FUNC_DUP
+  if test $REPLACE_DUP = 1; then
+    AC_LIBOBJ([dup])
+    gl_PREREQ_DUP
+  fi
+  gl_UNISTD_MODULE_INDICATOR([dup])
+  gl_FUNC_DUP2
+  if test $REPLACE_DUP2 = 1; then
+    AC_LIBOBJ([dup2])
+    gl_PREREQ_DUP2
+  fi
+  gl_UNISTD_MODULE_INDICATOR([dup2])
+  AC_PROG_MKDIR_P
+  gl_HEADER_ERRNO_H
+  gl_ERROR
+  if test $ac_cv_lib_error_at_line = no; then
+    AC_LIBOBJ([error])
+    gl_PREREQ_ERROR
+  fi
+  m4_ifdef([AM_XGETTEXT_OPTION],
+    [AM_][XGETTEXT_OPTION([--flag=error:3:c-format])
+     AM_][XGETTEXT_OPTION([--flag=error_at_line:5:c-format])])
+  AC_REQUIRE([gl_EXTERN_INLINE])
+  gl_FUNC_FCHDIR
+  gl_UNISTD_MODULE_INDICATOR([fchdir])
+  gl_FUNC_FCNTL
+  if test $HAVE_FCNTL = 0 || test $REPLACE_FCNTL = 1; then
+    AC_LIBOBJ([fcntl])
+  fi
+  gl_FCNTL_MODULE_INDICATOR([fcntl])
+  gl_FCNTL_H
+  gl_FCNTL_H_REQUIRE_DEFAULTS
+  gl_FCNTL_SAFER
+  gl_MODULE_INDICATOR([fcntl-safer])
+  gl_MODULE_INDICATOR([fd-safer-flag])
+  gl_FUNC_FDOPENDIR
+  if test $HAVE_FDOPENDIR = 0 || test $REPLACE_FDOPENDIR = 1; then
+    AC_LIBOBJ([fdopendir])
+  fi
+  gl_DIRENT_MODULE_INDICATOR([fdopendir])
+  gl_MODULE_INDICATOR([fdopendir])
+  gl_FILE_NAME_CONCAT_LGPL
+  AC_C_FLEXIBLE_ARRAY_MEMBER
+  gl_FUNC_FNMATCH_POSIX
+  if test $HAVE_FNMATCH = 0 || test $REPLACE_FNMATCH = 1; then
+    AC_LIBOBJ([fnmatch])
+    gl_PREREQ_FNMATCH
+  fi
+  gl_FNMATCH_MODULE_INDICATOR([fnmatch])
+  gl_FNMATCH_H
+  gl_FNMATCH_H_REQUIRE_DEFAULTS
+  gl_FUNC_FOPEN
+  if test $REPLACE_FOPEN = 1; then
+    AC_LIBOBJ([fopen])
+    gl_PREREQ_FOPEN
+  fi
+  gl_STDIO_MODULE_INDICATOR([fopen])
+  gl_FUNC_FOPEN_GNU
+  if test $REPLACE_FOPEN = 1; then
+    AC_LIBOBJ([fopen])
+    gl_PREREQ_FOPEN
+  fi
+  gl_MODULE_INDICATOR([fopen-gnu])
+  gl_FUNC_FPENDING
+  if test $gl_cv_func___fpending = no; then
+    AC_LIBOBJ([fpending])
+  fi
+  gl_FUNC_FREE
+  if test $REPLACE_FREE = 1; then
+    AC_LIBOBJ([free])
+    gl_PREREQ_FREE
+  fi
+  gl_STDLIB_MODULE_INDICATOR([free-posix])
+  gl_FUNC_FSTAT
+  if test $REPLACE_FSTAT = 1; then
+    AC_LIBOBJ([fstat])
+    case "$host_os" in
+      mingw*)
+        AC_LIBOBJ([stat-w32])
+        ;;
+    esac
+    gl_PREREQ_FSTAT
+  fi
+  gl_SYS_STAT_MODULE_INDICATOR([fstat])
+  gl_FUNC_FSTATAT
+  if test $HAVE_FSTATAT = 0 || test $REPLACE_FSTATAT = 1; then
+    AC_LIBOBJ([fstatat])
+  fi
+  gl_SYS_STAT_MODULE_INDICATOR([fstatat])
+  gl_FUNC_FTS
+  dnl Use this version of fts unconditionally, since the GNU libc and
+  dnl NetBSD versions have bugs and/or unnecessary limitations.
+  AC_LIBOBJ([fts])
+  gl_FUNC_GETCWD_LGPL
+  if test $REPLACE_GETCWD = 1; then
+    AC_LIBOBJ([getcwd-lgpl])
+  fi
+  gl_UNISTD_MODULE_INDICATOR([getcwd])
+  gl_FUNC_GETDTABLESIZE
+  if test $HAVE_GETDTABLESIZE = 0 || test $REPLACE_GETDTABLESIZE = 1; then
+    AC_LIBOBJ([getdtablesize])
+    gl_PREREQ_GETDTABLESIZE
+  fi
+  gl_UNISTD_MODULE_INDICATOR([getdtablesize])
+  gl_FUNC_GETOPT_GNU
+  dnl Because of the way gl_FUNC_GETOPT_GNU is implemented (the gl_getopt_required
+  dnl mechanism), there is no need to do any AC_LIBOBJ or AC_SUBST here; they are
+  dnl done in the getopt-posix module.
+  gl_FUNC_GETOPT_POSIX
+  if test $REPLACE_GETOPT = 1; then
+    AC_LIBOBJ([getopt])
+    AC_LIBOBJ([getopt1])
+    dnl Define the substituted variable GNULIB_UNISTD_H_GETOPT to 1.
+    gl_UNISTD_H_REQUIRE_DEFAULTS
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_GETOPT], [1])
+  fi
+  gl_UNISTD_MODULE_INDICATOR([getopt-posix])
+  gl_FUNC_GETPAGESIZE
+  if test $REPLACE_GETPAGESIZE = 1; then
+    AC_LIBOBJ([getpagesize])
+  fi
+  gl_UNISTD_MODULE_INDICATOR([getpagesize])
+  gl_FUNC_GETPROGNAME
+  AC_SUBST([LIBINTL])
+  AC_SUBST([LTLIBINTL])
+  # Autoconf 2.61a.99 and earlier don't support linking a file only
+  # in VPATH builds.  But since GNUmakefile is for maintainer use
+  # only, it does not matter if we skip the link with older autoconf.
+  # Automake 1.10.1 and earlier try to remove GNUmakefile in non-VPATH
+  # builds, so use a shell variable to bypass this.
+  GNUmakefile=GNUmakefile
+  m4_if(m4_version_compare([2.61a.100],
+          m4_defn([m4_PACKAGE_VERSION])), [1], [],
+        [AC_CONFIG_LINKS([$GNUmakefile:$GNUmakefile], [],
+          [GNUmakefile=$GNUmakefile])])
+  AC_REQUIRE([gl_FUNC_SETLOCALE_NULL])
+  LIB_HARD_LOCALE="$LIB_SETLOCALE_NULL"
+  AC_SUBST([LIB_HARD_LOCALE])
+  AC_DEFUN([gl_HAVE_MODULE_HAVELIB])
+  AC_REQUIRE([gl_HOST_CPU_C_ABI])
+  gl_I_RING
+  AM_ICONV
+  m4_ifdef([gl_ICONV_MODULE_INDICATOR],
+    [gl_ICONV_MODULE_INDICATOR([iconv])])
+  gl_ICONV_H
+  gl_ICONV_H_REQUIRE_DEFAULTS
+  gl_FUNC_ICONV_OPEN
+  if test $REPLACE_ICONV_OPEN = 1; then
+    AC_LIBOBJ([iconv_open])
+  fi
+  if test $REPLACE_ICONV = 1; then
+    AC_LIBOBJ([iconv])
+    AC_LIBOBJ([iconv_close])
+  fi
+  gl_INLINE
+  gl_INTTYPES_H
+  gl_INTTYPES_INCOMPLETE
+  gl_INTTYPES_H_REQUIRE_DEFAULTS
+  gl_FUNC_ISATTY
+  if test $REPLACE_ISATTY = 1; then
+    AC_LIBOBJ([isatty])
+    gl_PREREQ_ISATTY
+  fi
+  gl_UNISTD_MODULE_INDICATOR([isatty])
+  gl_FUNC_ISBLANK
+  if test $HAVE_ISBLANK = 0; then
+    AC_LIBOBJ([isblank])
+  fi
+  gl_MODULE_INDICATOR([isblank])
+  gl_CTYPE_MODULE_INDICATOR([isblank])
+  gl_FUNC_ISWBLANK
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+    :
+  else
+    if test $HAVE_ISWBLANK = 0 || test $REPLACE_ISWBLANK = 1; then
+      AC_LIBOBJ([iswblank])
+    fi
+  fi
+  gl_WCTYPE_MODULE_INDICATOR([iswblank])
+  gl_FUNC_ISWCTYPE
+  if test $HAVE_WCTYPE_T = 0 || test $GNULIBHEADERS_OVERRIDE_WINT_T = 1; then
+    AC_LIBOBJ([iswctype])
+  fi
+  gl_WCTYPE_MODULE_INDICATOR([iswctype])
+  gl_FUNC_ISWDIGIT
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+    :
+  else
+    if test $REPLACE_ISWDIGIT = 1; then
+      AC_LIBOBJ([iswdigit])
+    fi
+  fi
+  gl_WCTYPE_MODULE_INDICATOR([iswdigit])
+  gl_FUNC_ISWXDIGIT
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+    :
+  else
+    if test $REPLACE_ISWXDIGIT = 1; then
+      AC_LIBOBJ([iswxdigit])
+    fi
+  fi
+  gl_WCTYPE_MODULE_INDICATOR([iswxdigit])
+  gl_LANGINFO_H
+  gl_LANGINFO_H_REQUIRE_DEFAULTS
+  AC_REQUIRE([gl_LARGEFILE])
+  gl___INLINE
+  gl_LIMITS_H
+  gl_LOCALCHARSET
+  dnl For backward compatibility. Some packages still use this.
+  LOCALCHARSET_TESTS_ENVIRONMENT=
+  AC_SUBST([LOCALCHARSET_TESTS_ENVIRONMENT])
+  gl_LOCALE_H
+  gl_LOCALE_H_REQUIRE_DEFAULTS
+  gl_FUNC_LOCALECONV
+  if test $REPLACE_LOCALECONV = 1; then
+    AC_LIBOBJ([localeconv])
+    gl_PREREQ_LOCALECONV
+  fi
+  gl_LOCALE_MODULE_INDICATOR([localeconv])
+  gl_LOCK
+  gl_MODULE_INDICATOR([lock])
+  gl_FUNC_LSEEK
+  if test $REPLACE_LSEEK = 1; then
+    AC_LIBOBJ([lseek])
+  fi
+  gl_UNISTD_MODULE_INDICATOR([lseek])
+  gl_FUNC_LSTAT
+  if test $REPLACE_LSTAT = 1; then
+    AC_LIBOBJ([lstat])
+    gl_PREREQ_LSTAT
+  fi
+  gl_SYS_STAT_MODULE_INDICATOR([lstat])
+  AC_CONFIG_COMMANDS_PRE([m4_ifdef([AH_HEADER],
+    [AC_SUBST([CONFIG_INCLUDE], m4_defn([AH_HEADER]))])])
+  AC_REQUIRE([AC_PROG_SED])
+  AC_REQUIRE([AC_PROG_GREP])
+  gl_FUNC_MALLOC_GNU
+  if test $REPLACE_MALLOC = 1; then
+    AC_LIBOBJ([malloc])
+  fi
+  AC_REQUIRE([gl_FUNC_MALLOC_POSIX])
+  if test $REPLACE_MALLOC = 1; then
+    AC_LIBOBJ([malloc])
+  fi
+  gl_STDLIB_MODULE_INDICATOR([malloc-posix])
+  gl_MALLOCA
+  gl_MBCHAR
+  gl_MBITER
+  gl_FUNC_MBRLEN
+  if test $HAVE_MBRLEN = 0 || test $REPLACE_MBRLEN = 1; then
+    AC_LIBOBJ([mbrlen])
+    gl_PREREQ_MBRLEN
+  fi
+  gl_WCHAR_MODULE_INDICATOR([mbrlen])
+  gl_FUNC_MBRTOWC
+  if test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1; then
+    AC_LIBOBJ([mbrtowc])
+    if test $REPLACE_MBSTATE_T = 1; then
+      AC_LIBOBJ([lc-charset-dispatch])
+      AC_LIBOBJ([mbtowc-lock])
+      gl_PREREQ_MBTOWC_LOCK
+    fi
+    gl_PREREQ_MBRTOWC
+  fi
+  gl_WCHAR_MODULE_INDICATOR([mbrtowc])
+  gl_STRING_MODULE_INDICATOR([mbscasecmp])
+  gl_FUNC_MBSINIT
+  if test $HAVE_MBSINIT = 0 || test $REPLACE_MBSINIT = 1; then
+    AC_LIBOBJ([mbsinit])
+    gl_PREREQ_MBSINIT
+  fi
+  gl_WCHAR_MODULE_INDICATOR([mbsinit])
+  gl_FUNC_MBSLEN
+  gl_STRING_MODULE_INDICATOR([mbslen])
+  gl_FUNC_MBSRTOWCS
+  if test $HAVE_MBSRTOWCS = 0 || test $REPLACE_MBSRTOWCS = 1; then
+    AC_LIBOBJ([mbsrtowcs])
+    AC_LIBOBJ([mbsrtowcs-state])
+    gl_PREREQ_MBSRTOWCS
+  fi
+  gl_WCHAR_MODULE_INDICATOR([mbsrtowcs])
+  gl_STRING_MODULE_INDICATOR([mbsstr])
+  gl_FUNC_MBTOWC
+  if test $HAVE_MBTOWC = 0 || test $REPLACE_MBTOWC = 1; then
+    AC_LIBOBJ([mbtowc])
+    gl_PREREQ_MBTOWC
+  fi
+  gl_STDLIB_MODULE_INDICATOR([mbtowc])
+  gl_MBITER
+  gl_FUNC_MEMCHR
+  if test $REPLACE_MEMCHR = 1; then
+    AC_LIBOBJ([memchr])
+    gl_PREREQ_MEMCHR
+  fi
+  gl_STRING_MODULE_INDICATOR([memchr])
+  gl_FUNC_MEMPCPY
+  if test $HAVE_MEMPCPY = 0; then
+    AC_LIBOBJ([mempcpy])
+    gl_PREREQ_MEMPCPY
+  fi
+  gl_STRING_MODULE_INDICATOR([mempcpy])
+  gl_FUNC_MEMRCHR
+  if test $ac_cv_func_memrchr = no; then
+    AC_LIBOBJ([memrchr])
+    gl_PREREQ_MEMRCHR
+  fi
+  gl_STRING_MODULE_INDICATOR([memrchr])
+  gl_MINMAX
+  AC_REQUIRE([gl_MSVC_INVAL])
+  if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+    AC_LIBOBJ([msvc-inval])
+  fi
+  AC_REQUIRE([gl_MSVC_NOTHROW])
+  if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+    AC_LIBOBJ([msvc-nothrow])
+  fi
+  gl_MODULE_INDICATOR([msvc-nothrow])
+  gl_MULTIARCH
+  gl_FUNC_NL_LANGINFO
+  if test $HAVE_NL_LANGINFO = 0 || test $REPLACE_NL_LANGINFO = 1; then
+    AC_LIBOBJ([nl_langinfo])
+  fi
+  if test $REPLACE_NL_LANGINFO = 1 && test $NL_LANGINFO_MTSAFE = 0; then
+    AC_LIBOBJ([nl_langinfo-lock])
+    gl_PREREQ_NL_LANGINFO_LOCK
+  fi
+  gl_LANGINFO_MODULE_INDICATOR([nl_langinfo])
+  AC_FUNC_OBSTACK
+  dnl Note: AC_FUNC_OBSTACK does AC_LIBSOURCES([obstack.h, obstack.c]).
+  gl_FUNC_OPEN
+  if test $REPLACE_OPEN = 1; then
+    AC_LIBOBJ([open])
+    gl_PREREQ_OPEN
+  fi
+  gl_FCNTL_MODULE_INDICATOR([open])
+  gl_FUNC_OPENAT
+  if test $HAVE_OPENAT = 0 || test $REPLACE_OPENAT = 1; then
+    AC_LIBOBJ([openat])
+    gl_PREREQ_OPENAT
+  fi
+  gl_MODULE_INDICATOR([openat]) dnl for lib/getcwd.c
+  gl_FCNTL_MODULE_INDICATOR([openat])
+  gl_OPENAT_SAFER
+  gl_MODULE_INDICATOR([openat-safer])
+  gl_FUNC_OPENDIR
+  if test $HAVE_OPENDIR = 0 || test $REPLACE_OPENDIR = 1; then
+    AC_LIBOBJ([opendir])
+  fi
+  gl_DIRENT_MODULE_INDICATOR([opendir])
+  gl_PATHMAX
+  gl_PERL
+  gl_FUNC_PIPE
+  if test $HAVE_PIPE = 0; then
+    AC_LIBOBJ([pipe])
+  fi
+  gl_UNISTD_MODULE_INDICATOR([pipe])
+  m4_ifdef([AM_XGETTEXT_OPTION],
+    [AM_][XGETTEXT_OPTION([--keyword='proper_name:1,\"This is a proper name. See the gettext manual, section Names.\"'])
+     AM_][XGETTEXT_OPTION([--keyword='proper_name_utf8:1,\"This is a proper name. See the gettext manual, section Names.\"'])])
+  gl_QUOTE
+  gl_QUOTEARG
+  gl_FUNC_RAISE
+  if test $HAVE_RAISE = 0 || test $REPLACE_RAISE = 1; then
+    AC_LIBOBJ([raise])
+    gl_PREREQ_RAISE
+  fi
+  gl_SIGNAL_MODULE_INDICATOR([raise])
+  gl_FUNC_RAWMEMCHR
+  if test $HAVE_RAWMEMCHR = 0; then
+    AC_LIBOBJ([rawmemchr])
+    gl_PREREQ_RAWMEMCHR
+  fi
+  gl_STRING_MODULE_INDICATOR([rawmemchr])
+  gl_FUNC_READ
+  if test $REPLACE_READ = 1; then
+    AC_LIBOBJ([read])
+    gl_PREREQ_READ
+  fi
+  gl_UNISTD_MODULE_INDICATOR([read])
+  gl_FUNC_READDIR
+  if test $HAVE_READDIR = 0; then
+    AC_LIBOBJ([readdir])
+  fi
+  gl_DIRENT_MODULE_INDICATOR([readdir])
+  gl_FUNC_REALLOC_GNU
+  if test $REPLACE_REALLOC = 1; then
+    AC_LIBOBJ([realloc])
+  fi
+  gl_FUNC_REALLOC_POSIX
+  if test $REPLACE_REALLOC = 1; then
+    AC_LIBOBJ([realloc])
+  fi
+  gl_STDLIB_MODULE_INDICATOR([realloc-posix])
+  gl_FUNC_REALLOCARRAY
+  if test $HAVE_REALLOCARRAY = 0 || test $REPLACE_REALLOCARRAY = 1; then
+    AC_LIBOBJ([reallocarray])
+    gl_PREREQ_REALLOCARRAY
+  fi
+  gl_MODULE_INDICATOR([reallocarray])
+  gl_STDLIB_MODULE_INDICATOR([reallocarray])
+  gl_REGEX
+  if test $ac_use_included_regex = yes; then
+    AC_LIBOBJ([regex])
+    gl_PREREQ_REGEX
+  fi
+  gl_PREREQ_SAFE_READ
+  gl_SAVE_CWD
+  gl_FUNC_SETLOCALE_NULL
+  if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then
+    AC_LIBOBJ([setlocale-lock])
+    gl_PREREQ_SETLOCALE_LOCK
+  fi
+  gl_LOCALE_MODULE_INDICATOR([setlocale_null])
+  gl_SIGNAL_H
+  gl_SIGNAL_H_REQUIRE_DEFAULTS
+  AC_ARG_WITH([libsigsegv],
+    [AS_HELP_STRING([--with-libsigsegv],
+       [use the GNU libsigsegv library, when present, instead of the gnulib module 'sigsegv'])])
+  SIGSEGV_H=sigsegv.h
+  if test "$with_libsigsegv" = yes; then
+    gl_LIBSIGSEGV
+    if test "$gl_cv_lib_sigsegv" = yes; then
+      SIGSEGV_H=
+    fi
+  fi
+  AC_SUBST([SIGSEGV_H])
+  AM_CONDITIONAL([GL_GENERATE_SIGSEGV_H], [test -n "$SIGSEGV_H"])
+  if test -n "$SIGSEGV_H"; then
+    dnl Persuade glibc <sys/ucontext.h> to declare macros designating register
+    dnl indices: REG_RSP on x86_64, REG_ESP on i386.
+    dnl Persuade Solaris OpenIndiana <ucontext.h> to include <sys/regset.h>,
+    dnl which declares macros designating register indices, such as ESP on i386.
+    dnl Persuade Solaris OpenIndiana <unistd.h> to declare mincore().
+    AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+    AC_REQUIRE([AC_CANONICAL_HOST])
+    case "$host_os" in
+      solaris2.11)
+        AC_DEFINE([SOLARIS11], [1], [Define on Solaris 11 and its derivates.])
+        ;;
+    esac
+    gl_FUNC_MMAP_ANON
+    dnl Stack direction.
+    SV_STACK_DIRECTION
+    dnl Catching stack overflow requires an alternate signal stack.
+    dnl The old "install a guard page" trick would be unreliable, because
+    dnl we don't know where exactly to place the guard page.
+    SV_SIGALTSTACK
+    AC_CHECK_FUNCS_ONCE([getrlimit])
+  fi
+  gt_TYPE_SSIZE_T
+  gl_FUNC_STAT
+  if test $REPLACE_STAT = 1; then
+    AC_LIBOBJ([stat])
+    case "$host_os" in
+      mingw*)
+        AC_LIBOBJ([stat-w32])
+        ;;
+    esac
+    gl_PREREQ_STAT
+  fi
+  gl_SYS_STAT_MODULE_INDICATOR([stat])
+  gl_STAT_TIME
+  gl_STAT_BIRTHTIME
+  gl_STDALIGN_H
+  gl_STDARG_H
+  AM_STDBOOL_H
+  gl_STDDEF_H
+  gl_STDDEF_H_REQUIRE_DEFAULTS
+  gl_STDINT_H
+  gl_STDIO_H
+  gl_STDIO_H_REQUIRE_DEFAULTS
+  dnl No need to create extra modules for these functions. Everyone who uses
+  dnl <stdio.h> likely needs them.
+  gl_STDIO_MODULE_INDICATOR([fscanf])
+  gl_MODULE_INDICATOR([fscanf])
+  gl_STDIO_MODULE_INDICATOR([scanf])
+  gl_MODULE_INDICATOR([scanf])
+  gl_STDIO_MODULE_INDICATOR([fgetc])
+  gl_STDIO_MODULE_INDICATOR([getc])
+  gl_STDIO_MODULE_INDICATOR([getchar])
+  gl_STDIO_MODULE_INDICATOR([fgets])
+  gl_STDIO_MODULE_INDICATOR([fread])
+  dnl No need to create extra modules for these functions. Everyone who uses
+  dnl <stdio.h> likely needs them.
+  gl_STDIO_MODULE_INDICATOR([fprintf])
+  gl_STDIO_MODULE_INDICATOR([printf])
+  gl_STDIO_MODULE_INDICATOR([vfprintf])
+  gl_STDIO_MODULE_INDICATOR([vprintf])
+  gl_STDIO_MODULE_INDICATOR([fputc])
+  gl_STDIO_MODULE_INDICATOR([putc])
+  gl_STDIO_MODULE_INDICATOR([putchar])
+  gl_STDIO_MODULE_INDICATOR([fputs])
+  gl_STDIO_MODULE_INDICATOR([puts])
+  gl_STDIO_MODULE_INDICATOR([fwrite])
+  gl_STDLIB_H
+  gl_STDLIB_H_REQUIRE_DEFAULTS
+  gl_FUNC_STPCPY
+  if test $HAVE_STPCPY = 0; then
+    AC_LIBOBJ([stpcpy])
+    gl_PREREQ_STPCPY
+  fi
+  gl_STRING_MODULE_INDICATOR([stpcpy])
+  gl_FUNC_STRDUP_POSIX
+  if test $REPLACE_STRDUP = 1; then
+    AC_LIBOBJ([strdup])
+    gl_PREREQ_STRDUP
+  fi
+  gl_STRING_MODULE_INDICATOR([strdup])
+  gl_FUNC_STRERROR
+  if test $REPLACE_STRERROR = 1; then
+    AC_LIBOBJ([strerror])
+  fi
+  gl_MODULE_INDICATOR([strerror])
+  gl_STRING_MODULE_INDICATOR([strerror])
+  AC_REQUIRE([gl_HEADER_ERRNO_H])
+  AC_REQUIRE([gl_FUNC_STRERROR_0])
+  if test -n "$ERRNO_H" || test $REPLACE_STRERROR_0 = 1; then
+    AC_LIBOBJ([strerror-override])
+    gl_PREREQ_SYS_H_WINSOCK2
+  fi
+  if test $gl_cond_libtool = false; then
+    gl_ltlibdeps="$gl_ltlibdeps $LTLIBICONV"
+    gl_libdeps="$gl_libdeps $LIBICONV"
+  fi
+  gl_STRING_H
+  gl_STRING_H_REQUIRE_DEFAULTS
+  gl_FUNC_STRNLEN
+  if test $HAVE_DECL_STRNLEN = 0 || test $REPLACE_STRNLEN = 1; then
+    AC_LIBOBJ([strnlen])
+    gl_PREREQ_STRNLEN
+  fi
+  gl_STRING_MODULE_INDICATOR([strnlen])
+  gl_FUNC_STRSTR
+  if test $REPLACE_STRSTR = 1; then
+    AC_LIBOBJ([strstr])
+  fi
+  gl_FUNC_STRSTR_SIMPLE
+  if test $REPLACE_STRSTR = 1; then
+    AC_LIBOBJ([strstr])
+  fi
+  gl_STRING_MODULE_INDICATOR([strstr])
+  gl_FUNC_STRTOIMAX
+  if test $HAVE_DECL_STRTOIMAX = 0 || test $REPLACE_STRTOIMAX = 1; then
+    AC_LIBOBJ([strtoimax])
+    gl_PREREQ_STRTOIMAX
+  fi
+  gl_INTTYPES_MODULE_INDICATOR([strtoimax])
+  gl_FUNC_STRTOLL
+  if test $HAVE_STRTOLL = 0 || test $REPLACE_STRTOLL = 1; then
+    AC_LIBOBJ([strtoll])
+    gl_PREREQ_STRTOLL
+  fi
+  gl_STDLIB_MODULE_INDICATOR([strtoll])
+  gl_FUNC_STRTOULL
+  if test $HAVE_STRTOULL = 0 || test $REPLACE_STRTOULL = 1; then
+    AC_LIBOBJ([strtoull])
+    gl_PREREQ_STRTOULL
+  fi
+  gl_STDLIB_MODULE_INDICATOR([strtoull])
+  gl_FUNC_STRTOUMAX
+  if test $HAVE_DECL_STRTOUMAX = 0 || test $REPLACE_STRTOUMAX = 1; then
+    AC_LIBOBJ([strtoumax])
+    gl_PREREQ_STRTOUMAX
+  fi
+  gl_INTTYPES_MODULE_INDICATOR([strtoumax])
+  gl_SYS_STAT_H
+  gl_SYS_STAT_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
+  gl_SYS_TYPES_H
+  gl_SYS_TYPES_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
+  AC_REQUIRE([gl_THREADLIB])
+  gl_TIME_H
+  gl_TIME_H_REQUIRE_DEFAULTS
+  gl_UNISTD_H
+  gl_UNISTD_H_REQUIRE_DEFAULTS
+  gl_UNISTD_SAFER
+  gl_LIBUNISTRING_LIBHEADER([0.9.11], [unistr.h])
+  gl_MODULE_INDICATOR([unistr/u8-mbtoucr])
+  gl_LIBUNISTRING_MODULE([0.9], [unistr/u8-mbtoucr])
+  gl_MODULE_INDICATOR([unistr/u8-uctomb])
+  gl_LIBUNISTRING_MODULE([0.9], [unistr/u8-uctomb])
+  gl_LIBUNISTRING_LIBHEADER([0.9.11], [unitypes.h])
+  AH_VERBATIM([unitypes_restrict], [
+  /* This definition is a duplicate of the one in unitypes.h.
+     It is here so that we can cope with an older version of unitypes.h
+     that does not contain this definition and that is pre-installed among
+     the public header files.  */
+  # if defined __restrict \
+       || 2 < __GNUC__ + (95 <= __GNUC_MINOR__) \
+       || __clang_major__ >= 3
+  #  define _UC_RESTRICT __restrict
+  # elif 199901L <= __STDC_VERSION__ || defined restrict
+  #  define _UC_RESTRICT restrict
+  # else
+  #  define _UC_RESTRICT
+  # endif
+  ])
+  gl_LIBUNISTRING_LIBHEADER([0.9.11], [uniwidth.h])
+  gl_LIBUNISTRING_MODULE([0.9.8], [uniwidth/width])
+  AC_DEFINE([GNULIB_STDIO_SINGLE_THREAD], [1],
+    [Define to 1 if you want the FILE stream functions getc, putc, etc.
+     to use unlocked I/O if available, throughout the package.
+     Unlocked I/O can improve performance, sometimes dramatically.
+     But unlocked I/O is safe only in single-threaded programs,
+     as well as in multithreaded programs for which you can guarantee that
+     every FILE stream, including stdin, stdout, stderr, is used only
+     in a single thread.])
+  AC_DEFINE([USE_UNLOCKED_IO], [GNULIB_STDIO_SINGLE_THREAD],
+    [An alias of GNULIB_STDIO_SINGLE_THREAD.])
+  gl_FUNC_GLIBC_UNLOCKED_IO
+  gl_VERSION_ETC
+  gl_WCHAR_H
+  gl_WCHAR_H_REQUIRE_DEFAULTS
+  gl_FUNC_WCRTOMB
+  if test $HAVE_WCRTOMB = 0 || test $REPLACE_WCRTOMB = 1; then
+    AC_LIBOBJ([wcrtomb])
+    gl_PREREQ_WCRTOMB
+  fi
+  gl_WCHAR_MODULE_INDICATOR([wcrtomb])
+  gl_FUNC_WCTOB
+  if test $HAVE_WCTOB = 0 || test $REPLACE_WCTOB = 1; then
+    AC_LIBOBJ([wctob])
+    gl_PREREQ_WCTOB
+  fi
+  gl_WCHAR_MODULE_INDICATOR([wctob])
+  gl_FUNC_WCTOMB
+  if test $REPLACE_WCTOMB = 1; then
+    AC_LIBOBJ([wctomb])
+    gl_PREREQ_WCTOMB
+  fi
+  gl_STDLIB_MODULE_INDICATOR([wctomb])
+  gl_WCTYPE_H
+  gl_WCTYPE_H_REQUIRE_DEFAULTS
+  gl_FUNC_WCWIDTH
+  if test $HAVE_WCWIDTH = 0 || test $REPLACE_WCWIDTH = 1; then
+    AC_LIBOBJ([wcwidth])
+    gl_PREREQ_WCWIDTH
+  fi
+  gl_WCHAR_MODULE_INDICATOR([wcwidth])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    mingw*)
+      AC_LIBOBJ([windows-mutex])
+      ;;
+  esac
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    mingw*)
+      AC_LIBOBJ([windows-once])
+      ;;
+  esac
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    mingw*)
+      AC_LIBOBJ([windows-recmutex])
+      ;;
+  esac
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    mingw*)
+      AC_LIBOBJ([windows-rwlock])
+      ;;
+  esac
+  AC_REQUIRE([gl_WINDOWS_STAT_INODES])
+  gl_SYS_STAT_H_REQUIRE_DEFAULTS
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    mingw*) gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OVERRIDES_STRUCT_STAT], [1]) ;;
+  esac
+  gl_FUNC_WMEMCHR
+  if test $HAVE_WMEMCHR = 0; then
+    AC_LIBOBJ([wmemchr])
+  fi
+  gl_WCHAR_MODULE_INDICATOR([wmemchr])
+  gl_FUNC_WMEMPCPY
+  if test $HAVE_WMEMPCPY = 0; then
+    AC_LIBOBJ([wmempcpy])
+  fi
+  gl_WCHAR_MODULE_INDICATOR([wmempcpy])
+  gl_XALLOC
+  gl_MODULE_INDICATOR([xalloc])
+  gl_MODULE_INDICATOR([xalloc-die])
+  gl_XSTRTOL
+  # End of code from modules
+  m4_ifval(gl_LIBSOURCES_LIST, [
+    m4_syscmd([test ! -d ]m4_defn([gl_LIBSOURCES_DIR])[ ||
+      for gl_file in ]gl_LIBSOURCES_LIST[ ; do
+        if test ! -r ]m4_defn([gl_LIBSOURCES_DIR])[/$gl_file ; then
+          echo "missing file ]m4_defn([gl_LIBSOURCES_DIR])[/$gl_file" >&2
+          exit 1
+        fi
+      done])dnl
+      m4_if(m4_sysval, [0], [],
+        [AC_FATAL([expected source file, required through AC_LIBSOURCES, not found])])
+  ])
+  m4_popdef([GL_MODULE_INDICATOR_PREFIX])
+  m4_popdef([GL_MACRO_PREFIX])
+  m4_popdef([gl_LIBSOURCES_DIR])
+  m4_popdef([gl_LIBSOURCES_LIST])
+  m4_popdef([AC_LIBSOURCES])
+  m4_popdef([AC_REPLACE_FUNCS])
+  m4_popdef([AC_LIBOBJ])
+  AC_CONFIG_COMMANDS_PRE([
+    gl_libobjs=
+    gl_ltlibobjs=
+    if test -n "$gl_LIBOBJS"; then
+      # Remove the extension.
+      sed_drop_objext='s/\.o$//;s/\.obj$//'
+      for i in `for i in $gl_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
+        gl_libobjs="$gl_libobjs $i.$ac_objext"
+        gl_ltlibobjs="$gl_ltlibobjs $i.lo"
+      done
+    fi
+    AC_SUBST([gl_LIBOBJS], [$gl_libobjs])
+    AC_SUBST([gl_LTLIBOBJS], [$gl_ltlibobjs])
+  ])
+  gltests_libdeps=
+  gltests_ltlibdeps=
+  m4_pushdef([AC_LIBOBJ], m4_defn([gltests_LIBOBJ]))
+  m4_pushdef([AC_REPLACE_FUNCS], m4_defn([gltests_REPLACE_FUNCS]))
+  m4_pushdef([AC_LIBSOURCES], m4_defn([gltests_LIBSOURCES]))
+  m4_pushdef([gltests_LIBSOURCES_LIST], [])
+  m4_pushdef([gltests_LIBSOURCES_DIR], [])
+  m4_pushdef([GL_MACRO_PREFIX], [gltests])
+  m4_pushdef([GL_MODULE_INDICATOR_PREFIX], [GL])
+  gl_COMMON
+  AC_REQUIRE([gl_CC_ALLOW_WARNINGS])
+  AC_REQUIRE([gl_CXX_ALLOW_WARNINGS])
+  gl_source_base='gnulib-tests'
+changequote(,)dnl
+  gltests_WITNESS=IN_`echo "${PACKAGE-$PACKAGE_TARNAME}" | LC_ALL=C tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | LC_ALL=C sed -e 's/[^A-Z0-9_]/_/g'`_GNULIB_TESTS
+changequote([, ])dnl
+  AC_SUBST([gltests_WITNESS])
+  gl_module_indicator_condition=$gltests_WITNESS
+  m4_pushdef([gl_MODULE_INDICATOR_CONDITION], [$gl_module_indicator_condition])
+  AC_REQUIRE([gl_SYS_SOCKET_H])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    AC_LIBOBJ([accept])
+  fi
+  gl_SYS_SOCKET_MODULE_INDICATOR([accept])
+  gl_ARPA_INET_H
+  gl_ARPA_INET_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
+  AC_REQUIRE([gl_SYS_SOCKET_H])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    AC_LIBOBJ([bind])
+  fi
+  gl_SYS_SOCKET_MODULE_INDICATOR([bind])
+  gt_LOCALE_FR
+  gt_LOCALE_FR_UTF8
+  gt_LOCALE_FR
+  gt_LOCALE_TR_UTF8
+  AC_REQUIRE([gl_SYS_SOCKET_H])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    AC_LIBOBJ([connect])
+  fi
+  gl_SYS_SOCKET_MODULE_INDICATOR([connect])
+  gl_ENVIRON
+  gl_UNISTD_MODULE_INDICATOR([environ])
+  gl_FUNC_FDOPEN
+  if test $REPLACE_FDOPEN = 1; then
+    AC_LIBOBJ([fdopen])
+    gl_PREREQ_FDOPEN
+  fi
+  gl_STDIO_MODULE_INDICATOR([fdopen])
+  gl_FLOAT_H
+  if test $REPLACE_FLOAT_LDBL = 1; then
+    AC_LIBOBJ([float])
+  fi
+  if test $REPLACE_ITOLD = 1; then
+    AC_LIBOBJ([itold])
+  fi
+  gl_FUNC_FTRUNCATE
+  if test $HAVE_FTRUNCATE = 0 || test $REPLACE_FTRUNCATE = 1; then
+    AC_LIBOBJ([ftruncate])
+    gl_PREREQ_FTRUNCATE
+  fi
+  gl_UNISTD_MODULE_INDICATOR([ftruncate])
+  gl_FUNC_GETTIMEOFDAY
+  if test $HAVE_GETTIMEOFDAY = 0 || test $REPLACE_GETTIMEOFDAY = 1; then
+    AC_LIBOBJ([gettimeofday])
+    gl_PREREQ_GETTIMEOFDAY
+  fi
+  gl_SYS_TIME_MODULE_INDICATOR([gettimeofday])
+  gl_MUSL_LIBC
+  dnl Distinguish OpenBSD >= 6.2 from OpenBSD < 6.2.
+  AC_CHECK_FUNCS_ONCE([duplocale])
+  gl_FUNC_INET_PTON
+  if test $HAVE_INET_PTON = 0 || test $REPLACE_INET_PTON = 1; then
+    AC_LIBOBJ([inet_pton])
+    gl_PREREQ_INET_PTON
+  fi
+  gl_ARPA_INET_MODULE_INDICATOR([inet_pton])
+  AC_C_BIGENDIAN
+  gl_INTTOSTR
+  gl_FUNC_IOCTL
+  if test $HAVE_IOCTL = 0 || test $REPLACE_IOCTL = 1; then
+    AC_LIBOBJ([ioctl])
+  fi
+  gl_SYS_IOCTL_MODULE_INDICATOR([ioctl])
+  gt_LOCALE_FR
+  gt_LOCALE_FR_UTF8
+  gt_LOCALE_JA
+  gt_LOCALE_ZH_CN
+  gt_LOCALE_FR
+  gt_LOCALE_FR_UTF8
+  gt_LOCALE_JA
+  gt_LOCALE_ZH_CN
+  AC_REQUIRE([gl_SYS_SOCKET_H])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    AC_LIBOBJ([listen])
+  fi
+  gl_SYS_SOCKET_MODULE_INDICATOR([listen])
+  AC_CHECK_FUNCS_ONCE([newlocale])
+  gl_LOCALENAME
+  gl_LOCALE_MODULE_INDICATOR([localename])
+  AC_CHECK_FUNCS_ONCE([newlocale])
+  gt_LOCALE_TR_UTF8
+  gt_LOCALE_FR_UTF8
+  gt_LOCALE_FR
+  gt_LOCALE_FR_UTF8
+  gt_LOCALE_JA
+  gt_LOCALE_ZH_CN
+  gt_LOCALE_FR_UTF8
+  gt_LOCALE_ZH_CN
+  dnl Check for prerequisites for memory fence checks.
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_NANOSLEEP
+  if test $HAVE_NANOSLEEP = 0 || test $REPLACE_NANOSLEEP = 1; then
+    AC_LIBOBJ([nanosleep])
+    gl_PREREQ_NANOSLEEP
+  fi
+  gl_TIME_MODULE_INDICATOR([nanosleep])
+  AC_CHECK_DECLS_ONCE([alarm])
+  gl_HEADER_NETINET_IN
+  AC_PROG_MKDIR_P
+  gt_LOCALE_FR
+  gt_LOCALE_FR_UTF8
+  gl_FUNC_PERROR
+  if test $REPLACE_PERROR = 1; then
+    AC_LIBOBJ([perror])
+  fi
+  gl_STRING_MODULE_INDICATOR([perror])
+  gl_PTHREAD_H
+  gl_PTHREAD_H_REQUIRE_DEFAULTS
+  gl_PTHREAD_THREAD
+  if test $HAVE_PTHREAD_CREATE = 0 || test $REPLACE_PTHREAD_CREATE = 1; then
+    AC_LIBOBJ([pthread-thread])
+  fi
+  gl_PTHREAD_MODULE_INDICATOR([pthread-thread])
+  gl_FUNC_PTHREAD_SIGMASK
+  if test $HAVE_PTHREAD_SIGMASK = 0 || test $REPLACE_PTHREAD_SIGMASK = 1; then
+    AC_LIBOBJ([pthread_sigmask])
+    gl_PREREQ_PTHREAD_SIGMASK
+  fi
+  gl_SIGNAL_MODULE_INDICATOR([pthread_sigmask])
+  gl_FUNC_PUTENV
+  if test $REPLACE_PUTENV = 1; then
+    AC_LIBOBJ([putenv])
+    gl_PREREQ_PUTENV
+  fi
+  gl_STDLIB_MODULE_INDICATOR([putenv])
+  dnl Check for prerequisites for memory fence checks.
+  dnl FIXME: zerosize-ptr.h requires these: make a module for it
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  dnl Check for prerequisites for memory fence checks.
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_SCHED_H
+  gl_SCHED_H_REQUIRE_DEFAULTS
+  gl_FUNC_SELECT
+  if test $REPLACE_SELECT = 1; then
+    AC_LIBOBJ([select])
+  fi
+  gl_SYS_SELECT_MODULE_INDICATOR([select])
+  AC_CHECK_HEADERS_ONCE([sys/wait.h])
+  gl_FUNC_SETENV
+  if test $HAVE_SETENV = 0 || test $REPLACE_SETENV = 1; then
+    AC_LIBOBJ([setenv])
+  fi
+  gl_STDLIB_MODULE_INDICATOR([setenv])
+  gl_FUNC_SETLOCALE
+  if test $REPLACE_SETLOCALE = 1; then
+    AC_LIBOBJ([setlocale])
+    gl_PREREQ_SETLOCALE
+  fi
+  gl_LOCALE_MODULE_INDICATOR([setlocale])
+  gt_LOCALE_FR
+  gt_LOCALE_FR_UTF8
+  gt_LOCALE_JA
+  gt_LOCALE_ZH_CN
+  AC_REQUIRE([gl_SYS_SOCKET_H])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    AC_LIBOBJ([setsockopt])
+  fi
+  gl_SYS_SOCKET_MODULE_INDICATOR([setsockopt])
+  gl_SIGACTION
+  if test $HAVE_SIGACTION = 0; then
+    AC_LIBOBJ([sigaction])
+    gl_PREREQ_SIGACTION
+  fi
+  gl_SIGNAL_MODULE_INDICATOR([sigaction])
+  gl_SIGNALBLOCKING
+  if test $HAVE_POSIX_SIGNALBLOCKING = 0; then
+    AC_LIBOBJ([sigprocmask])
+    gl_PREREQ_SIGPROCMASK
+  fi
+  gl_SIGNAL_MODULE_INDICATOR([sigprocmask])
+  AC_CHECK_FUNCS_ONCE([setrlimit])
+  gl_FUNC_MMAP_ANON
+  gl_SIZE_MAX
+  gl_FUNC_SLEEP
+  if test $HAVE_SLEEP = 0 || test $REPLACE_SLEEP = 1; then
+    AC_LIBOBJ([sleep])
+  fi
+  gl_UNISTD_MODULE_INDICATOR([sleep])
+  AC_CHECK_DECLS_ONCE([alarm])
+  gl_FUNC_SNPRINTF
+  gl_STDIO_MODULE_INDICATOR([snprintf])
+  gl_MODULE_INDICATOR([snprintf])
+  AC_REQUIRE([gl_SYS_SOCKET_H])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    AC_LIBOBJ([socket])
+  fi
+  # When this module is used, sockets may actually occur as file descriptors,
+  # hence it is worth warning if the modules 'close' and 'ioctl' are not used.
+  m4_ifdef([gl_UNISTD_H_DEFAULTS], [gl_UNISTD_H_REQUIRE_DEFAULTS])
+  m4_ifdef([gl_SYS_IOCTL_H_DEFAULTS], [gl_SYS_IOCTL_H_REQUIRE_DEFAULTS])
+  AC_REQUIRE([gl_PREREQ_SYS_H_WINSOCK2])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=1
+    SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=1
+  fi
+  gl_SYS_SOCKET_MODULE_INDICATOR([socket])
+  AC_REQUIRE([gl_SOCKETLIB])
+  AC_REQUIRE([gl_SOCKETS])
+  gl_TYPE_SOCKLEN_T
+  AC_REQUIRE([gt_TYPE_WCHAR_T])
+  AC_REQUIRE([gt_TYPE_WINT_T])
+  gl_FUNC_STRERROR_R
+  if test $HAVE_DECL_STRERROR_R = 0 || test $REPLACE_STRERROR_R = 1; then
+    AC_LIBOBJ([strerror_r])
+    gl_PREREQ_STRERROR_R
+  fi
+  gl_STRING_MODULE_INDICATOR([strerror_r])
+  dnl For the modules argp, error.
+  gl_MODULE_INDICATOR([strerror_r-posix])
+  dnl Check for prerequisites for memory fence checks.
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  AC_CHECK_DECLS_ONCE([alarm])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_SYMLINK
+  if test $HAVE_SYMLINK = 0 || test $REPLACE_SYMLINK = 1; then
+    AC_LIBOBJ([symlink])
+  fi
+  gl_UNISTD_MODULE_INDICATOR([symlink])
+  gl_SYS_IOCTL_H
+  gl_SYS_IOCTL_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
+  gl_SYS_SELECT_H
+  gl_SYS_SELECT_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
+  gl_SYS_SOCKET_H
+  gl_SYS_SOCKET_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
+  AC_CHECK_FUNCS_ONCE([shutdown])
+  gl_SYS_TIME_H
+  gl_SYS_TIME_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
+  gl_SYS_UIO_H
+  gl_SYS_UIO_H_REQUIRE_DEFAULTS
+  AC_PROG_MKDIR_P
+  gl_THREAD
+  AC_CHECK_HEADERS([sys/single_threaded.h])
+  gl_FUNC_UNSETENV
+  if test $HAVE_UNSETENV = 0 || test $REPLACE_UNSETENV = 1; then
+    AC_LIBOBJ([unsetenv])
+    gl_PREREQ_UNSETENV
+  fi
+  gl_STDLIB_MODULE_INDICATOR([unsetenv])
+  AC_REQUIRE([AC_C_RESTRICT])
+  gl_FUNC_VASNPRINTF
+  abs_aux_dir=`cd "$ac_aux_dir"; pwd`
+  AC_SUBST([abs_aux_dir])
+  gt_LOCALE_FR
+  gt_LOCALE_FR_UTF8
+  gt_LOCALE_JA
+  gt_LOCALE_ZH_CN
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    mingw*)
+      AC_LIBOBJ([windows-thread])
+      ;;
+  esac
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    mingw*)
+      AC_LIBOBJ([windows-tls])
+      ;;
+  esac
+  gl_XSIZE
+  m4_popdef([gl_MODULE_INDICATOR_CONDITION])
+  m4_ifval(gltests_LIBSOURCES_LIST, [
+    m4_syscmd([test ! -d ]m4_defn([gltests_LIBSOURCES_DIR])[ ||
+      for gl_file in ]gltests_LIBSOURCES_LIST[ ; do
+        if test ! -r ]m4_defn([gltests_LIBSOURCES_DIR])[/$gl_file ; then
+          echo "missing file ]m4_defn([gltests_LIBSOURCES_DIR])[/$gl_file" >&2
+          exit 1
+        fi
+      done])dnl
+      m4_if(m4_sysval, [0], [],
+        [AC_FATAL([expected source file, required through AC_LIBSOURCES, not found])])
+  ])
+  m4_popdef([GL_MODULE_INDICATOR_PREFIX])
+  m4_popdef([GL_MACRO_PREFIX])
+  m4_popdef([gltests_LIBSOURCES_DIR])
+  m4_popdef([gltests_LIBSOURCES_LIST])
+  m4_popdef([AC_LIBSOURCES])
+  m4_popdef([AC_REPLACE_FUNCS])
+  m4_popdef([AC_LIBOBJ])
+  AC_CONFIG_COMMANDS_PRE([
+    gltests_libobjs=
+    gltests_ltlibobjs=
+    if test -n "$gltests_LIBOBJS"; then
+      # Remove the extension.
+      sed_drop_objext='s/\.o$//;s/\.obj$//'
+      for i in `for i in $gltests_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
+        gltests_libobjs="$gltests_libobjs $i.$ac_objext"
+        gltests_ltlibobjs="$gltests_ltlibobjs $i.lo"
+      done
+    fi
+    AC_SUBST([gltests_LIBOBJS], [$gltests_libobjs])
+    AC_SUBST([gltests_LTLIBOBJS], [$gltests_ltlibobjs])
+  ])
+  LIBGREPUTILS_LIBDEPS="$gl_libdeps"
+  AC_SUBST([LIBGREPUTILS_LIBDEPS])
+  LIBGREPUTILS_LTLIBDEPS="$gl_ltlibdeps"
+  AC_SUBST([LIBGREPUTILS_LTLIBDEPS])
+  LIBTESTS_LIBDEPS="$gltests_libdeps"
+  AC_SUBST([LIBTESTS_LIBDEPS])
+])
+
+# Like AC_LIBOBJ, except that the module name goes
+# into gl_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gl_LIBOBJ], [
+  AS_LITERAL_IF([$1], [gl_LIBSOURCES([$1.c])])dnl
+  gl_LIBOBJS="$gl_LIBOBJS $1.$ac_objext"
+])
+
+# Like AC_REPLACE_FUNCS, except that the module name goes
+# into gl_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gl_REPLACE_FUNCS], [
+  m4_foreach_w([gl_NAME], [$1], [AC_LIBSOURCES(gl_NAME[.c])])dnl
+  AC_CHECK_FUNCS([$1], , [gl_LIBOBJ($ac_func)])
+])
+
+# Like AC_LIBSOURCES, except the directory where the source file is
+# expected is derived from the gnulib-tool parameterization,
+# and alloca is special cased (for the alloca-opt module).
+# We could also entirely rely on EXTRA_lib..._SOURCES.
+AC_DEFUN([gl_LIBSOURCES], [
+  m4_foreach([_gl_NAME], [$1], [
+    m4_if(_gl_NAME, [alloca.c], [], [
+      m4_define([gl_LIBSOURCES_DIR], [lib])
+      m4_append([gl_LIBSOURCES_LIST], _gl_NAME, [ ])
+    ])
+  ])
+])
+
+# Like AC_LIBOBJ, except that the module name goes
+# into gltests_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gltests_LIBOBJ], [
+  AS_LITERAL_IF([$1], [gltests_LIBSOURCES([$1.c])])dnl
+  gltests_LIBOBJS="$gltests_LIBOBJS $1.$ac_objext"
+])
+
+# Like AC_REPLACE_FUNCS, except that the module name goes
+# into gltests_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gltests_REPLACE_FUNCS], [
+  m4_foreach_w([gl_NAME], [$1], [AC_LIBSOURCES(gl_NAME[.c])])dnl
+  AC_CHECK_FUNCS([$1], , [gltests_LIBOBJ($ac_func)])
+])
+
+# Like AC_LIBSOURCES, except the directory where the source file is
+# expected is derived from the gnulib-tool parameterization,
+# and alloca is special cased (for the alloca-opt module).
+# We could also entirely rely on EXTRA_lib..._SOURCES.
+AC_DEFUN([gltests_LIBSOURCES], [
+  m4_foreach([_gl_NAME], [$1], [
+    m4_if(_gl_NAME, [alloca.c], [], [
+      m4_define([gltests_LIBSOURCES_DIR], [gnulib-tests])
+      m4_append([gltests_LIBSOURCES_LIST], _gl_NAME, [ ])
+    ])
+  ])
+])
+
+# This macro records the list of files which have been installed by
+# gnulib-tool and may be removed by future gnulib-tool invocations.
+AC_DEFUN([gl_FILE_LIST], [
+  build-aux/announce-gen
+  build-aux/config.rpath
+  build-aux/do-release-commit-and-tag
+  build-aux/gendocs.sh
+  build-aux/git-version-gen
+  build-aux/gitlog-to-changelog
+  build-aux/gnu-web-doc-update
+  build-aux/gnupload
+  build-aux/update-copyright
+  build-aux/useless-if-before-free
+  build-aux/vc-list-files
+  doc/fdl.texi
+  doc/gendocs_template
+  doc/gendocs_template_min
+  lib/_Noreturn.h
+  lib/alignof.h
+  lib/alloca.c
+  lib/alloca.in.h
+  lib/arg-nonnull.h
+  lib/argmatch.c
+  lib/argmatch.h
+  lib/assure.h
+  lib/at-func.c
+  lib/attribute.h
+  lib/basename-lgpl.c
+  lib/basename-lgpl.h
+  lib/binary-io.c
+  lib/binary-io.h
+  lib/bitrotate.c
+  lib/bitrotate.h
+  lib/btowc.c
+  lib/c++defs.h
+  lib/c-ctype.c
+  lib/c-ctype.h
+  lib/c-stack.c
+  lib/c-stack.h
+  lib/c-strcase.h
+  lib/c-strcasecmp.c
+  lib/c-strcaseeq.h
+  lib/c-strncasecmp.c
+  lib/calloc.c
+  lib/cdefs.h
+  lib/chdir-long.c
+  lib/chdir-long.h
+  lib/cloexec.c
+  lib/cloexec.h
+  lib/close-stream.c
+  lib/close-stream.h
+  lib/close.c
+  lib/closedir.c
+  lib/closeout.c
+  lib/closeout.h
+  lib/creat-safer.c
+  lib/ctype.in.h
+  lib/cycle-check.c
+  lib/cycle-check.h
+  lib/dev-ino.h
+  lib/dfa.c
+  lib/dfa.h
+  lib/dirent-private.h
+  lib/dirent.in.h
+  lib/dirfd.c
+  lib/dirname-lgpl.c
+  lib/dirname.h
+  lib/dup-safer-flag.c
+  lib/dup-safer.c
+  lib/dup.c
+  lib/dup2.c
+  lib/dynarray.h
+  lib/errno.in.h
+  lib/error.c
+  lib/error.h
+  lib/exclude.c
+  lib/exclude.h
+  lib/exitfail.c
+  lib/exitfail.h
+  lib/fchdir.c
+  lib/fcntl--.h
+  lib/fcntl-safer.h
+  lib/fcntl.c
+  lib/fcntl.in.h
+  lib/fd-hook.c
+  lib/fd-hook.h
+  lib/fd-safer-flag.c
+  lib/fd-safer.c
+  lib/fdopendir.c
+  lib/filename.h
+  lib/filenamecat-lgpl.c
+  lib/filenamecat.h
+  lib/flexmember.h
+  lib/fnmatch.c
+  lib/fnmatch.in.h
+  lib/fnmatch_loop.c
+  lib/fopen.c
+  lib/fpending.c
+  lib/fpending.h
+  lib/free.c
+  lib/fstat.c
+  lib/fstatat.c
+  lib/fts-cycle.c
+  lib/fts.c
+  lib/fts_.h
+  lib/getcwd-lgpl.c
+  lib/getdtablesize.c
+  lib/getopt-cdefs.in.h
+  lib/getopt-core.h
+  lib/getopt-ext.h
+  lib/getopt-pfx-core.h
+  lib/getopt-pfx-ext.h
+  lib/getopt.c
+  lib/getopt.in.h
+  lib/getopt1.c
+  lib/getopt_int.h
+  lib/getpagesize.c
+  lib/getprogname.c
+  lib/getprogname.h
+  lib/gettext.h
+  lib/glthread/lock.c
+  lib/glthread/lock.h
+  lib/glthread/threadlib.c
+  lib/hard-locale.c
+  lib/hard-locale.h
+  lib/hash.c
+  lib/hash.h
+  lib/i-ring.c
+  lib/i-ring.h
+  lib/ialloc.c
+  lib/ialloc.h
+  lib/iconv.c
+  lib/iconv.in.h
+  lib/iconv_close.c
+  lib/iconv_open-aix.gperf
+  lib/iconv_open-hpux.gperf
+  lib/iconv_open-irix.gperf
+  lib/iconv_open-osf.gperf
+  lib/iconv_open-solaris.gperf
+  lib/iconv_open-zos.gperf
+  lib/iconv_open.c
+  lib/idx.h
+  lib/ignore-value.h
+  lib/intprops.h
+  lib/inttypes.in.h
+  lib/isatty.c
+  lib/isblank.c
+  lib/iswblank.c
+  lib/iswctype-impl.h
+  lib/iswctype.c
+  lib/iswdigit.c
+  lib/iswxdigit.c
+  lib/langinfo.in.h
+  lib/lc-charset-dispatch.c
+  lib/lc-charset-dispatch.h
+  lib/libc-config.h
+  lib/limits.in.h
+  lib/localcharset.c
+  lib/localcharset.h
+  lib/locale.in.h
+  lib/localeconv.c
+  lib/localeinfo.c
+  lib/localeinfo.h
+  lib/lseek.c
+  lib/lstat.c
+  lib/malloc.c
+  lib/malloc/dynarray-skeleton.c
+  lib/malloc/dynarray.h
+  lib/malloc/dynarray_at_failure.c
+  lib/malloc/dynarray_emplace_enlarge.c
+  lib/malloc/dynarray_finalize.c
+  lib/malloc/dynarray_resize.c
+  lib/malloc/dynarray_resize_clear.c
+  lib/malloca.c
+  lib/malloca.h
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+  tests/test-wcrtomb.c
+  tests/test-wcrtomb.sh
+  tests/test-wctype-h.c
+  tests/test-wcwidth.c
+  tests/test-xalloc-die.c
+  tests/test-xalloc-die.sh
+  tests/test-xstrtoimax.c
+  tests/test-xstrtoimax.sh
+  tests/test-xstrtol.c
+  tests/test-xstrtol.sh
+  tests/test-xstrtoul.c
+  tests/unistr/test-u8-mbtoucr.c
+  tests/unistr/test-u8-uctomb.c
+  tests/uniwidth/test-uc_width.c
+  tests/uniwidth/test-uc_width2.c
+  tests/uniwidth/test-uc_width2.sh
+  tests/zerosize-ptr.h
+  tests=lib/_Noreturn.h
+  tests=lib/accept.c
+  tests=lib/anytostr.c
+  tests=lib/arg-nonnull.h
+  tests=lib/arpa_inet.in.h
+  tests=lib/asnprintf.c
+  tests=lib/bind.c
+  tests=lib/c++defs.h
+  tests=lib/connect.c
+  tests=lib/fdopen.c
+  tests=lib/float+.h
+  tests=lib/float.c
+  tests=lib/float.in.h
+  tests=lib/fpucw.h
+  tests=lib/ftruncate.c
+  tests=lib/gettimeofday.c
+  tests=lib/glthread/thread.c
+  tests=lib/glthread/thread.h
+  tests=lib/hash-pjw.c
+  tests=lib/hash-pjw.h
+  tests=lib/imaxtostr.c
+  tests=lib/inet_pton.c
+  tests=lib/inttostr.c
+  tests=lib/inttostr.h
+  tests=lib/ioctl.c
+  tests=lib/itold.c
+  tests=lib/listen.c
+  tests=lib/localename-table.c
+  tests=lib/localename-table.h
+  tests=lib/localename.c
+  tests=lib/localename.h
+  tests=lib/nanosleep.c
+  tests=lib/netinet_in.in.h
+  tests=lib/offtostr.c
+  tests=lib/perror.c
+  tests=lib/printf-args.c
+  tests=lib/printf-args.h
+  tests=lib/printf-parse.c
+  tests=lib/printf-parse.h
+  tests=lib/pthread-thread.c
+  tests=lib/pthread.in.h
+  tests=lib/pthread_sigmask.c
+  tests=lib/putenv.c
+  tests=lib/sched.in.h
+  tests=lib/select.c
+  tests=lib/setenv.c
+  tests=lib/setlocale.c
+  tests=lib/setsockopt.c
+  tests=lib/sig-handler.c
+  tests=lib/sig-handler.h
+  tests=lib/sigaction.c
+  tests=lib/sigprocmask.c
+  tests=lib/size_max.h
+  tests=lib/sleep.c
+  tests=lib/snprintf.c
+  tests=lib/socket.c
+  tests=lib/sockets.c
+  tests=lib/sockets.h
+  tests=lib/strerror_r.c
+  tests=lib/symlink.c
+  tests=lib/sys_ioctl.in.h
+  tests=lib/sys_select.in.h
+  tests=lib/sys_socket.c
+  tests=lib/sys_socket.in.h
+  tests=lib/sys_time.in.h
+  tests=lib/sys_uio.in.h
+  tests=lib/thread-optim.h
+  tests=lib/uinttostr.c
+  tests=lib/umaxtostr.c
+  tests=lib/unsetenv.c
+  tests=lib/vasnprintf.c
+  tests=lib/vasnprintf.h
+  tests=lib/w32sock.h
+  tests=lib/warn-on-use.h
+  tests=lib/windows-thread.c
+  tests=lib/windows-thread.h
+  tests=lib/windows-tls.c
+  tests=lib/windows-tls.h
+  tests=lib/xsize.c
+  tests=lib/xsize.h
+  tests=lib/xstrtol-error.c
+  tests=lib/xstrtol-error.h
+  top/GNUmakefile
+  top/README-release
+  top/maint.mk
+])
diff --git a/src/grep/m4/host-cpu-c-abi.m4 b/src/grep/m4/host-cpu-c-abi.m4
new file mode 100644
index 0000000..64e28b1
--- /dev/null
+++ b/src/grep/m4/host-cpu-c-abi.m4
@@ -0,0 +1,675 @@
+# host-cpu-c-abi.m4 serial 14
+dnl Copyright (C) 2002-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible and Sam Steingold.
+
+dnl Sets the HOST_CPU variable to the canonical name of the CPU.
+dnl Sets the HOST_CPU_C_ABI variable to the canonical name of the CPU with its
+dnl C language ABI (application binary interface).
+dnl Also defines __${HOST_CPU}__ and __${HOST_CPU_C_ABI}__ as C macros in
+dnl config.h.
+dnl
+dnl This canonical name can be used to select a particular assembly language
+dnl source file that will interoperate with C code on the given host.
+dnl
+dnl For example:
+dnl * 'i386' and 'sparc' are different canonical names, because code for i386
+dnl   will not run on SPARC CPUs and vice versa. They have different
+dnl   instruction sets.
+dnl * 'sparc' and 'sparc64' are different canonical names, because code for
+dnl   'sparc' and code for 'sparc64' cannot be linked together: 'sparc' code
+dnl   contains 32-bit instructions, whereas 'sparc64' code contains 64-bit
+dnl   instructions. A process on a SPARC CPU can be in 32-bit mode or in 64-bit
+dnl   mode, but not both.
+dnl * 'mips' and 'mipsn32' are different canonical names, because they use
+dnl   different argument passing and return conventions for C functions, and
+dnl   although the instruction set of 'mips' is a large subset of the
+dnl   instruction set of 'mipsn32'.
+dnl * 'mipsn32' and 'mips64' are different canonical names, because they use
+dnl   different sizes for the C types like 'int' and 'void *', and although
+dnl   the instruction sets of 'mipsn32' and 'mips64' are the same.
+dnl * The same canonical name is used for different endiannesses. You can
+dnl   determine the endianness through preprocessor symbols:
+dnl   - 'arm': test __ARMEL__.
+dnl   - 'mips', 'mipsn32', 'mips64': test _MIPSEB vs. _MIPSEL.
+dnl   - 'powerpc64': test _BIG_ENDIAN vs. _LITTLE_ENDIAN.
+dnl * The same name 'i386' is used for CPUs of type i386, i486, i586
+dnl   (Pentium), AMD K7, Pentium II, Pentium IV, etc., because
+dnl   - Instructions that do not exist on all of these CPUs (cmpxchg,
+dnl     MMX, SSE, SSE2, 3DNow! etc.) are not frequently used. If your
+dnl     assembly language source files use such instructions, you will
+dnl     need to make the distinction.
+dnl   - Speed of execution of the common instruction set is reasonable across
+dnl     the entire family of CPUs. If you have assembly language source files
+dnl     that are optimized for particular CPU types (like GNU gmp has), you
+dnl     will need to make the distinction.
+dnl   See <https://en.wikipedia.org/wiki/X86_instruction_listings>.
+AC_DEFUN([gl_HOST_CPU_C_ABI],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_C_ASM])
+  AC_CACHE_CHECK([host CPU and C ABI], [gl_cv_host_cpu_c_abi],
+    [case "$host_cpu" in
+
+changequote(,)dnl
+       i[34567]86 )
+changequote([,])dnl
+         gl_cv_host_cpu_c_abi=i386
+         ;;
+
+       x86_64 )
+         # On x86_64 systems, the C compiler may be generating code in one of
+         # these ABIs:
+         # - 64-bit instruction set, 64-bit pointers, 64-bit 'long': x86_64.
+         # - 64-bit instruction set, 64-bit pointers, 32-bit 'long': x86_64
+         #   with native Windows (mingw, MSVC).
+         # - 64-bit instruction set, 32-bit pointers, 32-bit 'long': x86_64-x32.
+         # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': i386.
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#if (defined __x86_64__ || defined __amd64__ \
+                     || defined _M_X64 || defined _M_AMD64)
+                 int ok;
+                #else
+                 error fail
+                #endif
+              ]])],
+           [AC_COMPILE_IFELSE(
+              [AC_LANG_SOURCE(
+                 [[#if defined __ILP32__ || defined _ILP32
+                    int ok;
+                   #else
+                    error fail
+                   #endif
+                 ]])],
+              [gl_cv_host_cpu_c_abi=x86_64-x32],
+              [gl_cv_host_cpu_c_abi=x86_64])],
+           [gl_cv_host_cpu_c_abi=i386])
+         ;;
+
+changequote(,)dnl
+       alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] )
+changequote([,])dnl
+         gl_cv_host_cpu_c_abi=alpha
+         ;;
+
+       arm* | aarch64 )
+         # Assume arm with EABI.
+         # On arm64 systems, the C compiler may be generating code in one of
+         # these ABIs:
+         # - aarch64 instruction set, 64-bit pointers, 64-bit 'long': arm64.
+         # - aarch64 instruction set, 32-bit pointers, 32-bit 'long': arm64-ilp32.
+         # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': arm or armhf.
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#ifdef __aarch64__
+                 int ok;
+                #else
+                 error fail
+                #endif
+              ]])],
+           [AC_COMPILE_IFELSE(
+              [AC_LANG_SOURCE(
+                [[#if defined __ILP32__ || defined _ILP32
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+                ]])],
+              [gl_cv_host_cpu_c_abi=arm64-ilp32],
+              [gl_cv_host_cpu_c_abi=arm64])],
+           [# Don't distinguish little-endian and big-endian arm, since they
+            # don't require different machine code for simple operations and
+            # since the user can distinguish them through the preprocessor
+            # defines __ARMEL__ vs. __ARMEB__.
+            # But distinguish arm which passes floating-point arguments and
+            # return values in integer registers (r0, r1, ...) - this is
+            # gcc -mfloat-abi=soft or gcc -mfloat-abi=softfp - from arm which
+            # passes them in float registers (s0, s1, ...) and double registers
+            # (d0, d1, ...) - this is gcc -mfloat-abi=hard. GCC 4.6 or newer
+            # sets the preprocessor defines __ARM_PCS (for the first case) and
+            # __ARM_PCS_VFP (for the second case), but older GCC does not.
+            echo 'double ddd; void func (double dd) { ddd = dd; }' > conftest.c
+            # Look for a reference to the register d0 in the .s file.
+            AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS $gl_c_asm_opt conftest.c) >/dev/null 2>&1
+            if LC_ALL=C grep 'd0,' conftest.$gl_asmext >/dev/null; then
+              gl_cv_host_cpu_c_abi=armhf
+            else
+              gl_cv_host_cpu_c_abi=arm
+            fi
+            rm -f conftest*
+           ])
+         ;;
+
+       hppa1.0 | hppa1.1 | hppa2.0* | hppa64 )
+         # On hppa, the C compiler may be generating 32-bit code or 64-bit
+         # code. In the latter case, it defines _LP64 and __LP64__.
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#ifdef __LP64__
+                 int ok;
+                #else
+                 error fail
+                #endif
+              ]])],
+           [gl_cv_host_cpu_c_abi=hppa64],
+           [gl_cv_host_cpu_c_abi=hppa])
+         ;;
+
+       ia64* )
+         # On ia64 on HP-UX, the C compiler may be generating 64-bit code or
+         # 32-bit code. In the latter case, it defines _ILP32.
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#ifdef _ILP32
+                 int ok;
+                #else
+                 error fail
+                #endif
+              ]])],
+           [gl_cv_host_cpu_c_abi=ia64-ilp32],
+           [gl_cv_host_cpu_c_abi=ia64])
+         ;;
+
+       mips* )
+         # We should also check for (_MIPS_SZPTR == 64), but gcc keeps this
+         # at 32.
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#if defined _MIPS_SZLONG && (_MIPS_SZLONG == 64)
+                 int ok;
+                #else
+                 error fail
+                #endif
+              ]])],
+           [gl_cv_host_cpu_c_abi=mips64],
+           [# In the n32 ABI, _ABIN32 is defined, _ABIO32 is not defined (but
+            # may later get defined by <sgidefs.h>), and _MIPS_SIM == _ABIN32.
+            # In the 32 ABI, _ABIO32 is defined, _ABIN32 is not defined (but
+            # may later get defined by <sgidefs.h>), and _MIPS_SIM == _ABIO32.
+            AC_COMPILE_IFELSE(
+              [AC_LANG_SOURCE(
+                 [[#if (_MIPS_SIM == _ABIN32)
+                    int ok;
+                   #else
+                    error fail
+                   #endif
+                 ]])],
+              [gl_cv_host_cpu_c_abi=mipsn32],
+              [gl_cv_host_cpu_c_abi=mips])])
+         ;;
+
+       powerpc* )
+         # Different ABIs are in use on AIX vs. Mac OS X vs. Linux,*BSD.
+         # No need to distinguish them here; the caller may distinguish
+         # them based on the OS.
+         # On powerpc64 systems, the C compiler may still be generating
+         # 32-bit code. And on powerpc-ibm-aix systems, the C compiler may
+         # be generating 64-bit code.
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#if defined __powerpc64__ || defined __LP64__
+                 int ok;
+                #else
+                 error fail
+                #endif
+              ]])],
+           [# On powerpc64, there are two ABIs on Linux: The AIX compatible
+            # one and the ELFv2 one. The latter defines _CALL_ELF=2.
+            AC_COMPILE_IFELSE(
+              [AC_LANG_SOURCE(
+                 [[#if defined _CALL_ELF && _CALL_ELF == 2
+                    int ok;
+                   #else
+                    error fail
+                   #endif
+                 ]])],
+              [gl_cv_host_cpu_c_abi=powerpc64-elfv2],
+              [gl_cv_host_cpu_c_abi=powerpc64])
+           ],
+           [gl_cv_host_cpu_c_abi=powerpc])
+         ;;
+
+       rs6000 )
+         gl_cv_host_cpu_c_abi=powerpc
+         ;;
+
+       riscv32 | riscv64 )
+         # There are 2 architectures (with variants): rv32* and rv64*.
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#if __riscv_xlen == 64
+                  int ok;
+                #else
+                  error fail
+                #endif
+              ]])],
+           [cpu=riscv64],
+           [cpu=riscv32])
+         # There are 6 ABIs: ilp32, ilp32f, ilp32d, lp64, lp64f, lp64d.
+         # Size of 'long' and 'void *':
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#if defined __LP64__
+                  int ok;
+                #else
+                  error fail
+                #endif
+              ]])],
+           [main_abi=lp64],
+           [main_abi=ilp32])
+         # Float ABIs:
+         # __riscv_float_abi_double:
+         #   'float' and 'double' are passed in floating-point registers.
+         # __riscv_float_abi_single:
+         #   'float' are passed in floating-point registers.
+         # __riscv_float_abi_soft:
+         #   No values are passed in floating-point registers.
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#if defined __riscv_float_abi_double
+                  int ok;
+                #else
+                  error fail
+                #endif
+              ]])],
+           [float_abi=d],
+           [AC_COMPILE_IFELSE(
+              [AC_LANG_SOURCE(
+                 [[#if defined __riscv_float_abi_single
+                     int ok;
+                   #else
+                     error fail
+                   #endif
+                 ]])],
+              [float_abi=f],
+              [float_abi=''])
+           ])
+         gl_cv_host_cpu_c_abi="${cpu}-${main_abi}${float_abi}"
+         ;;
+
+       s390* )
+         # On s390x, the C compiler may be generating 64-bit (= s390x) code
+         # or 31-bit (= s390) code.
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#if defined __LP64__ || defined __s390x__
+                  int ok;
+                #else
+                  error fail
+                #endif
+              ]])],
+           [gl_cv_host_cpu_c_abi=s390x],
+           [gl_cv_host_cpu_c_abi=s390])
+         ;;
+
+       sparc | sparc64 )
+         # UltraSPARCs running Linux have `uname -m` = "sparc64", but the
+         # C compiler still generates 32-bit code.
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#if defined __sparcv9 || defined __arch64__
+                 int ok;
+                #else
+                 error fail
+                #endif
+              ]])],
+           [gl_cv_host_cpu_c_abi=sparc64],
+           [gl_cv_host_cpu_c_abi=sparc])
+         ;;
+
+       *)
+         gl_cv_host_cpu_c_abi="$host_cpu"
+         ;;
+     esac
+    ])
+
+  dnl In most cases, $HOST_CPU and $HOST_CPU_C_ABI are the same.
+  HOST_CPU=`echo "$gl_cv_host_cpu_c_abi" | sed -e 's/-.*//'`
+  HOST_CPU_C_ABI="$gl_cv_host_cpu_c_abi"
+  AC_SUBST([HOST_CPU])
+  AC_SUBST([HOST_CPU_C_ABI])
+
+  # This was
+  #   AC_DEFINE_UNQUOTED([__${HOST_CPU}__])
+  #   AC_DEFINE_UNQUOTED([__${HOST_CPU_C_ABI}__])
+  # earlier, but KAI C++ 3.2d doesn't like this.
+  sed -e 's/-/_/g' >> confdefs.h <<EOF
+#ifndef __${HOST_CPU}__
+#define __${HOST_CPU}__ 1
+#endif
+#ifndef __${HOST_CPU_C_ABI}__
+#define __${HOST_CPU_C_ABI}__ 1
+#endif
+EOF
+  AH_TOP([/* CPU and C ABI indicator */
+#ifndef __i386__
+#undef __i386__
+#endif
+#ifndef __x86_64_x32__
+#undef __x86_64_x32__
+#endif
+#ifndef __x86_64__
+#undef __x86_64__
+#endif
+#ifndef __alpha__
+#undef __alpha__
+#endif
+#ifndef __arm__
+#undef __arm__
+#endif
+#ifndef __armhf__
+#undef __armhf__
+#endif
+#ifndef __arm64_ilp32__
+#undef __arm64_ilp32__
+#endif
+#ifndef __arm64__
+#undef __arm64__
+#endif
+#ifndef __hppa__
+#undef __hppa__
+#endif
+#ifndef __hppa64__
+#undef __hppa64__
+#endif
+#ifndef __ia64_ilp32__
+#undef __ia64_ilp32__
+#endif
+#ifndef __ia64__
+#undef __ia64__
+#endif
+#ifndef __m68k__
+#undef __m68k__
+#endif
+#ifndef __mips__
+#undef __mips__
+#endif
+#ifndef __mipsn32__
+#undef __mipsn32__
+#endif
+#ifndef __mips64__
+#undef __mips64__
+#endif
+#ifndef __powerpc__
+#undef __powerpc__
+#endif
+#ifndef __powerpc64__
+#undef __powerpc64__
+#endif
+#ifndef __powerpc64_elfv2__
+#undef __powerpc64_elfv2__
+#endif
+#ifndef __riscv32__
+#undef __riscv32__
+#endif
+#ifndef __riscv64__
+#undef __riscv64__
+#endif
+#ifndef __riscv32_ilp32__
+#undef __riscv32_ilp32__
+#endif
+#ifndef __riscv32_ilp32f__
+#undef __riscv32_ilp32f__
+#endif
+#ifndef __riscv32_ilp32d__
+#undef __riscv32_ilp32d__
+#endif
+#ifndef __riscv64_ilp32__
+#undef __riscv64_ilp32__
+#endif
+#ifndef __riscv64_ilp32f__
+#undef __riscv64_ilp32f__
+#endif
+#ifndef __riscv64_ilp32d__
+#undef __riscv64_ilp32d__
+#endif
+#ifndef __riscv64_lp64__
+#undef __riscv64_lp64__
+#endif
+#ifndef __riscv64_lp64f__
+#undef __riscv64_lp64f__
+#endif
+#ifndef __riscv64_lp64d__
+#undef __riscv64_lp64d__
+#endif
+#ifndef __s390__
+#undef __s390__
+#endif
+#ifndef __s390x__
+#undef __s390x__
+#endif
+#ifndef __sh__
+#undef __sh__
+#endif
+#ifndef __sparc__
+#undef __sparc__
+#endif
+#ifndef __sparc64__
+#undef __sparc64__
+#endif
+])
+
+])
+
+
+dnl Sets the HOST_CPU_C_ABI_32BIT variable to 'yes' if the C language ABI
+dnl (application binary interface) is a 32-bit one, to 'no' if it is a 64-bit
+dnl one, or to 'unknown' if unknown.
+dnl This is a simplified variant of gl_HOST_CPU_C_ABI.
+AC_DEFUN([gl_HOST_CPU_C_ABI_32BIT],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CACHE_CHECK([32-bit host C ABI], [gl_cv_host_cpu_c_abi_32bit],
+    [if test -n "$gl_cv_host_cpu_c_abi"; then
+       case "$gl_cv_host_cpu_c_abi" in
+         i386 | x86_64-x32 | arm | armhf | arm64-ilp32 | hppa | ia64-ilp32 | mips | mipsn32 | powerpc | riscv*-ilp32* | s390 | sparc)
+           gl_cv_host_cpu_c_abi_32bit=yes ;;
+         x86_64 | alpha | arm64 | hppa64 | ia64 | mips64 | powerpc64 | powerpc64-elfv2 | riscv*-lp64* | s390x | sparc64 )
+           gl_cv_host_cpu_c_abi_32bit=no ;;
+         *)
+           gl_cv_host_cpu_c_abi_32bit=unknown ;;
+       esac
+     else
+       case "$host_cpu" in
+
+         # CPUs that only support a 32-bit ABI.
+         arc \
+         | bfin \
+         | cris* \
+         | csky \
+         | epiphany \
+         | ft32 \
+         | h8300 \
+         | m68k \
+         | microblaze | microblazeel \
+         | nds32 | nds32le | nds32be \
+         | nios2 | nios2eb | nios2el \
+         | or1k* \
+         | or32 \
+         | sh | sh[1234] | sh[1234]e[lb] \
+         | tic6x \
+         | xtensa* )
+           gl_cv_host_cpu_c_abi_32bit=yes
+           ;;
+
+         # CPUs that only support a 64-bit ABI.
+changequote(,)dnl
+         alpha | alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] \
+         | mmix )
+changequote([,])dnl
+           gl_cv_host_cpu_c_abi_32bit=no
+           ;;
+
+changequote(,)dnl
+         i[34567]86 )
+changequote([,])dnl
+           gl_cv_host_cpu_c_abi_32bit=yes
+           ;;
+
+         x86_64 )
+           # On x86_64 systems, the C compiler may be generating code in one of
+           # these ABIs:
+           # - 64-bit instruction set, 64-bit pointers, 64-bit 'long': x86_64.
+           # - 64-bit instruction set, 64-bit pointers, 32-bit 'long': x86_64
+           #   with native Windows (mingw, MSVC).
+           # - 64-bit instruction set, 32-bit pointers, 32-bit 'long': x86_64-x32.
+           # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': i386.
+           AC_COMPILE_IFELSE(
+             [AC_LANG_SOURCE(
+                [[#if (defined __x86_64__ || defined __amd64__ \
+                       || defined _M_X64 || defined _M_AMD64) \
+                      && !(defined __ILP32__ || defined _ILP32)
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+                ]])],
+             [gl_cv_host_cpu_c_abi_32bit=no],
+             [gl_cv_host_cpu_c_abi_32bit=yes])
+           ;;
+
+         arm* | aarch64 )
+           # Assume arm with EABI.
+           # On arm64 systems, the C compiler may be generating code in one of
+           # these ABIs:
+           # - aarch64 instruction set, 64-bit pointers, 64-bit 'long': arm64.
+           # - aarch64 instruction set, 32-bit pointers, 32-bit 'long': arm64-ilp32.
+           # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': arm or armhf.
+           AC_COMPILE_IFELSE(
+             [AC_LANG_SOURCE(
+                [[#if defined __aarch64__ && !(defined __ILP32__ || defined _ILP32)
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+                ]])],
+             [gl_cv_host_cpu_c_abi_32bit=no],
+             [gl_cv_host_cpu_c_abi_32bit=yes])
+           ;;
+
+         hppa1.0 | hppa1.1 | hppa2.0* | hppa64 )
+           # On hppa, the C compiler may be generating 32-bit code or 64-bit
+           # code. In the latter case, it defines _LP64 and __LP64__.
+           AC_COMPILE_IFELSE(
+             [AC_LANG_SOURCE(
+                [[#ifdef __LP64__
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+                ]])],
+             [gl_cv_host_cpu_c_abi_32bit=no],
+             [gl_cv_host_cpu_c_abi_32bit=yes])
+           ;;
+
+         ia64* )
+           # On ia64 on HP-UX, the C compiler may be generating 64-bit code or
+           # 32-bit code. In the latter case, it defines _ILP32.
+           AC_COMPILE_IFELSE(
+             [AC_LANG_SOURCE(
+                [[#ifdef _ILP32
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+                ]])],
+             [gl_cv_host_cpu_c_abi_32bit=yes],
+             [gl_cv_host_cpu_c_abi_32bit=no])
+           ;;
+
+         mips* )
+           # We should also check for (_MIPS_SZPTR == 64), but gcc keeps this
+           # at 32.
+           AC_COMPILE_IFELSE(
+             [AC_LANG_SOURCE(
+                [[#if defined _MIPS_SZLONG && (_MIPS_SZLONG == 64)
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+                ]])],
+             [gl_cv_host_cpu_c_abi_32bit=no],
+             [gl_cv_host_cpu_c_abi_32bit=yes])
+           ;;
+
+         powerpc* )
+           # Different ABIs are in use on AIX vs. Mac OS X vs. Linux,*BSD.
+           # No need to distinguish them here; the caller may distinguish
+           # them based on the OS.
+           # On powerpc64 systems, the C compiler may still be generating
+           # 32-bit code. And on powerpc-ibm-aix systems, the C compiler may
+           # be generating 64-bit code.
+           AC_COMPILE_IFELSE(
+             [AC_LANG_SOURCE(
+                [[#if defined __powerpc64__ || defined __LP64__
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+                ]])],
+             [gl_cv_host_cpu_c_abi_32bit=no],
+             [gl_cv_host_cpu_c_abi_32bit=yes])
+           ;;
+
+         rs6000 )
+           gl_cv_host_cpu_c_abi_32bit=yes
+           ;;
+
+         riscv32 | riscv64 )
+           # There are 6 ABIs: ilp32, ilp32f, ilp32d, lp64, lp64f, lp64d.
+           # Size of 'long' and 'void *':
+           AC_COMPILE_IFELSE(
+             [AC_LANG_SOURCE(
+                [[#if defined __LP64__
+                    int ok;
+                  #else
+                    error fail
+                  #endif
+                ]])],
+             [gl_cv_host_cpu_c_abi_32bit=no],
+             [gl_cv_host_cpu_c_abi_32bit=yes])
+           ;;
+
+         s390* )
+           # On s390x, the C compiler may be generating 64-bit (= s390x) code
+           # or 31-bit (= s390) code.
+           AC_COMPILE_IFELSE(
+             [AC_LANG_SOURCE(
+                [[#if defined __LP64__ || defined __s390x__
+                    int ok;
+                  #else
+                    error fail
+                  #endif
+                ]])],
+             [gl_cv_host_cpu_c_abi_32bit=no],
+             [gl_cv_host_cpu_c_abi_32bit=yes])
+           ;;
+
+         sparc | sparc64 )
+           # UltraSPARCs running Linux have `uname -m` = "sparc64", but the
+           # C compiler still generates 32-bit code.
+           AC_COMPILE_IFELSE(
+             [AC_LANG_SOURCE(
+                [[#if defined __sparcv9 || defined __arch64__
+                   int ok;
+                  #else
+                   error fail
+                  #endif
+                ]])],
+             [gl_cv_host_cpu_c_abi_32bit=no],
+             [gl_cv_host_cpu_c_abi_32bit=yes])
+           ;;
+
+         *)
+           gl_cv_host_cpu_c_abi_32bit=unknown
+           ;;
+       esac
+     fi
+    ])
+
+  HOST_CPU_C_ABI_32BIT="$gl_cv_host_cpu_c_abi_32bit"
+])
diff --git a/src/grep/m4/i-ring.m4 b/src/grep/m4/i-ring.m4
new file mode 100644
index 0000000..fb2e850
--- /dev/null
+++ b/src/grep/m4/i-ring.m4
@@ -0,0 +1,10 @@
+# serial 2
+dnl Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_I_RING],
+[
+  :
+])
diff --git a/src/grep/m4/iconv.m4 b/src/grep/m4/iconv.m4
new file mode 100644
index 0000000..d0e61de
--- /dev/null
+++ b/src/grep/m4/iconv.m4
@@ -0,0 +1,283 @@
+# iconv.m4 serial 24
+dnl Copyright (C) 2000-2002, 2007-2014, 2016-2021 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_PREREQ([2.64])
+
+dnl Note: AM_ICONV is documented in the GNU gettext manual
+dnl <https://www.gnu.org/software/gettext/manual/html_node/AM_005fICONV.html>.
+dnl Don't make changes that are incompatible with that documentation!
+
+AC_DEFUN([AM_ICONV_LINKFLAGS_BODY],
+[
+  dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+
+  dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
+  dnl accordingly.
+  AC_LIB_LINKFLAGS_BODY([iconv])
+])
+
+AC_DEFUN([AM_ICONV_LINK],
+[
+  dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
+  dnl those with the standalone portable GNU libiconv installed).
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
+  dnl accordingly.
+  AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
+
+  dnl Add $INCICONV to CPPFLAGS before performing the following checks,
+  dnl because if the user has installed libiconv and not disabled its use
+  dnl via --without-libiconv-prefix, he wants to use it. The first
+  dnl AC_LINK_IFELSE will then fail, the second AC_LINK_IFELSE will succeed.
+  am_save_CPPFLAGS="$CPPFLAGS"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV])
+
+  AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [
+    am_cv_func_iconv="no, consider installing GNU libiconv"
+    am_cv_lib_iconv=no
+    AC_LINK_IFELSE(
+      [AC_LANG_PROGRAM(
+         [[
+#include <stdlib.h>
+#include <iconv.h>
+         ]],
+         [[iconv_t cd = iconv_open("","");
+           iconv(cd,NULL,NULL,NULL,NULL);
+           iconv_close(cd);]])],
+      [am_cv_func_iconv=yes])
+    if test "$am_cv_func_iconv" != yes; then
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS $LIBICONV"
+      AC_LINK_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[
+#include <stdlib.h>
+#include <iconv.h>
+           ]],
+           [[iconv_t cd = iconv_open("","");
+             iconv(cd,NULL,NULL,NULL,NULL);
+             iconv_close(cd);]])],
+        [am_cv_lib_iconv=yes]
+        [am_cv_func_iconv=yes])
+      LIBS="$am_save_LIBS"
+    fi
+  ])
+  if test "$am_cv_func_iconv" = yes; then
+    AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [
+      dnl This tests against bugs in AIX 5.1, AIX 6.1..7.1, HP-UX 11.11,
+      dnl Solaris 10.
+      am_save_LIBS="$LIBS"
+      if test $am_cv_lib_iconv = yes; then
+        LIBS="$LIBS $LIBICONV"
+      fi
+      am_cv_func_iconv_works=no
+      for ac_iconv_const in '' 'const'; do
+        AC_RUN_IFELSE(
+          [AC_LANG_PROGRAM(
+             [[
+#include <iconv.h>
+#include <string.h>
+
+#ifndef ICONV_CONST
+# define ICONV_CONST $ac_iconv_const
+#endif
+             ]],
+             [[int result = 0;
+  /* Test against AIX 5.1...7.2 bug: Failures are not distinguishable from
+     successful returns.  This is even documented in
+     <https://www.ibm.com/support/knowledgecenter/ssw_aix_72/i_bostechref/iconv.html> */
+  {
+    iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8");
+    if (cd_utf8_to_88591 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\342\202\254"; /* EURO SIGN */
+        char buf[10];
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_utf8_to_88591,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res == 0)
+          result |= 1;
+        iconv_close (cd_utf8_to_88591);
+      }
+  }
+  /* Test against Solaris 10 bug: Failures are not distinguishable from
+     successful returns.  */
+  {
+    iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646");
+    if (cd_ascii_to_88591 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\263";
+        char buf[10];
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_ascii_to_88591,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res == 0)
+          result |= 2;
+        iconv_close (cd_ascii_to_88591);
+      }
+  }
+  /* Test against AIX 6.1..7.1 bug: Buffer overrun.  */
+  {
+    iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1");
+    if (cd_88591_to_utf8 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\304";
+        static char buf[2] = { (char)0xDE, (char)0xAD };
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = 1;
+        char *outptr = buf;
+        size_t outbytesleft = 1;
+        size_t res = iconv (cd_88591_to_utf8,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res != (size_t)(-1) || outptr - buf > 1 || buf[1] != (char)0xAD)
+          result |= 4;
+        iconv_close (cd_88591_to_utf8);
+      }
+  }
+#if 0 /* This bug could be worked around by the caller.  */
+  /* Test against HP-UX 11.11 bug: Positive return value instead of 0.  */
+  {
+    iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591");
+    if (cd_88591_to_utf8 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+        char buf[50];
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_88591_to_utf8,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if ((int)res > 0)
+          result |= 8;
+        iconv_close (cd_88591_to_utf8);
+      }
+  }
+#endif
+  /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
+     provided.  */
+  {
+    /* Try standardized names.  */
+    iconv_t cd1 = iconv_open ("UTF-8", "EUC-JP");
+    /* Try IRIX, OSF/1 names.  */
+    iconv_t cd2 = iconv_open ("UTF-8", "eucJP");
+    /* Try AIX names.  */
+    iconv_t cd3 = iconv_open ("UTF-8", "IBM-eucJP");
+    /* Try HP-UX names.  */
+    iconv_t cd4 = iconv_open ("utf8", "eucJP");
+    if (cd1 == (iconv_t)(-1) && cd2 == (iconv_t)(-1)
+        && cd3 == (iconv_t)(-1) && cd4 == (iconv_t)(-1))
+      result |= 16;
+    if (cd1 != (iconv_t)(-1))
+      iconv_close (cd1);
+    if (cd2 != (iconv_t)(-1))
+      iconv_close (cd2);
+    if (cd3 != (iconv_t)(-1))
+      iconv_close (cd3);
+    if (cd4 != (iconv_t)(-1))
+      iconv_close (cd4);
+  }
+  return result;
+]])],
+          [am_cv_func_iconv_works=yes], ,
+          [case "$host_os" in
+             aix* | hpux*) am_cv_func_iconv_works="guessing no" ;;
+             *)            am_cv_func_iconv_works="guessing yes" ;;
+           esac])
+        test "$am_cv_func_iconv_works" = no || break
+      done
+      LIBS="$am_save_LIBS"
+    ])
+    case "$am_cv_func_iconv_works" in
+      *no) am_func_iconv=no am_cv_lib_iconv=no ;;
+      *)   am_func_iconv=yes ;;
+    esac
+  else
+    am_func_iconv=no am_cv_lib_iconv=no
+  fi
+  if test "$am_func_iconv" = yes; then
+    AC_DEFINE([HAVE_ICONV], [1],
+      [Define if you have the iconv() function and it works.])
+  fi
+  if test "$am_cv_lib_iconv" = yes; then
+    AC_MSG_CHECKING([how to link with libiconv])
+    AC_MSG_RESULT([$LIBICONV])
+  else
+    dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
+    dnl either.
+    CPPFLAGS="$am_save_CPPFLAGS"
+    LIBICONV=
+    LTLIBICONV=
+  fi
+  AC_SUBST([LIBICONV])
+  AC_SUBST([LTLIBICONV])
+])
+
+dnl Define AM_ICONV using AC_DEFUN_ONCE, in order to avoid warnings like
+dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required".
+dnl This is tricky because of the way 'aclocal' is implemented:
+dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN.
+dnl   Otherwise aclocal's initial scan pass would miss the macro definition.
+dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions.
+dnl   Otherwise aclocal would emit many "Use of uninitialized value $1"
+dnl   warnings.
+AC_DEFUN_ONCE([AM_ICONV],
+[
+  AM_ICONV_LINK
+  if test "$am_cv_func_iconv" = yes; then
+    AC_CACHE_CHECK([whether iconv is compatible with its POSIX signature],
+      [gl_cv_iconv_nonconst],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[
+#include <stdlib.h>
+#include <iconv.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
+            ]],
+            [[]])],
+         [gl_cv_iconv_nonconst=yes],
+         [gl_cv_iconv_nonconst=no])
+      ])
+  else
+    dnl When compiling GNU libiconv on a system that does not have iconv yet,
+    dnl pick the POSIX compliant declaration without 'const'.
+    gl_cv_iconv_nonconst=yes
+  fi
+  if test $gl_cv_iconv_nonconst = yes; then
+    iconv_arg1=""
+  else
+    iconv_arg1="const"
+  fi
+  AC_DEFINE_UNQUOTED([ICONV_CONST], [$iconv_arg1],
+    [Define as const if the declaration of iconv() needs const.])
+  dnl Also substitute ICONV_CONST in the gnulib generated <iconv.h>.
+  m4_ifdef([gl_ICONV_H_DEFAULTS],
+    [AC_REQUIRE([gl_ICONV_H_DEFAULTS])
+     if test $gl_cv_iconv_nonconst != yes; then
+       ICONV_CONST="const"
+     fi
+    ])
+])
diff --git a/src/grep/m4/iconv_h.m4 b/src/grep/m4/iconv_h.m4
new file mode 100644
index 0000000..2940988
--- /dev/null
+++ b/src/grep/m4/iconv_h.m4
@@ -0,0 +1,72 @@
+# iconv_h.m4 serial 15
+dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_ICONV_H],
+[
+  AC_REQUIRE([gl_ICONV_H_DEFAULTS])
+
+  dnl Execute this unconditionally, because ICONV_H may be set by other
+  dnl modules, after this code is executed.
+  gl_CHECK_NEXT_HEADERS([iconv.h])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use, and which is not
+  dnl guaranteed by C89.
+  gl_WARN_ON_USE_PREPARE([[#include <iconv.h>
+    ]], [iconv iconv_open])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+])
+
+dnl Unconditionally enables the replacement of <iconv.h>.
+AC_DEFUN([gl_REPLACE_ICONV_H],
+[
+  gl_ICONV_H_REQUIRE_DEFAULTS
+  ICONV_H='iconv.h'
+  AM_CONDITIONAL([GL_GENERATE_ICONV_H], [test -n "$ICONV_H"])
+])
+
+# gl_ICONV_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_ICONV_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_ICONV_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_ICONV_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_ICONV_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ICONV])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_ICONV_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_ICONV_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_ICONV_H_DEFAULTS],
+[
+  m4_ifdef([gl_ANSI_CXX], [AC_REQUIRE([gl_ANSI_CXX])])
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  ICONV_CONST=;         AC_SUBST([ICONV_CONST])
+  REPLACE_ICONV=0;      AC_SUBST([REPLACE_ICONV])
+  REPLACE_ICONV_OPEN=0; AC_SUBST([REPLACE_ICONV_OPEN])
+  REPLACE_ICONV_UTF=0;  AC_SUBST([REPLACE_ICONV_UTF])
+  ICONV_H='';           AC_SUBST([ICONV_H])
+  m4_ifdef([gl_POSIXCHECK],
+    [ICONV_H='iconv.h'],
+    [if m4_ifdef([gl_ANSI_CXX], [test "$CXX" != no], [false]); then
+       dnl Override <fnmatch.h> always, to support the C++ GNULIB_NAMESPACE.
+       ICONV_H='iconv.h'
+     fi
+    ])
+  AM_CONDITIONAL([GL_GENERATE_ICONV_H], [test -n "$ICONV_H"])
+])
diff --git a/src/grep/m4/iconv_open.m4 b/src/grep/m4/iconv_open.m4
new file mode 100644
index 0000000..61b6af4
--- /dev/null
+++ b/src/grep/m4/iconv_open.m4
@@ -0,0 +1,60 @@
+# iconv_open.m4 serial 16
+dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_ICONV_OPEN],
+[
+  AC_REQUIRE([AM_ICONV])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_ICONV_H_DEFAULTS])
+  if test "$am_cv_func_iconv" = yes; then
+    dnl Provide the <iconv.h> override, for the sake of the C++ aliases.
+    gl_REPLACE_ICONV_H
+    dnl Test whether iconv_open accepts standardized encoding names.
+    dnl We know that GNU libiconv and GNU libc do.
+    AC_EGREP_CPP([gnu_iconv], [
+      #include <iconv.h>
+      #if defined _LIBICONV_VERSION || (defined __GLIBC__ && !defined __UCLIBC__)
+       gnu_iconv
+      #endif
+      ], [gl_func_iconv_gnu=yes], [gl_func_iconv_gnu=no])
+    if test $gl_func_iconv_gnu = no; then
+      iconv_flavor=
+      case "$host_os" in
+        aix*)         iconv_flavor=ICONV_FLAVOR_AIX ;;
+        irix*)        iconv_flavor=ICONV_FLAVOR_IRIX ;;
+        hpux*)        iconv_flavor=ICONV_FLAVOR_HPUX ;;
+        osf*)         iconv_flavor=ICONV_FLAVOR_OSF ;;
+        solaris*)     iconv_flavor=ICONV_FLAVOR_SOLARIS ;;
+        openedition*) iconv_flavor=ICONV_FLAVOR_ZOS ;;
+      esac
+      if test -n "$iconv_flavor"; then
+        AC_DEFINE_UNQUOTED([ICONV_FLAVOR], [$iconv_flavor],
+          [Define to a symbolic name denoting the flavor of iconv_open()
+           implementation.])
+        gl_REPLACE_ICONV_OPEN
+      fi
+    fi
+    m4_ifdef([gl_FUNC_ICONV_OPEN_UTF_SUPPORT], [
+      gl_FUNC_ICONV_OPEN_UTF_SUPPORT
+      case "$gl_cv_func_iconv_supports_utf" in
+        *yes) ;;
+        *)
+          REPLACE_ICONV_UTF=1
+          AC_DEFINE([REPLACE_ICONV_UTF], [1],
+            [Define if the iconv() functions are enhanced to handle the UTF-{16,32}{BE,LE} encodings.])
+          REPLACE_ICONV=1
+          gl_REPLACE_ICONV_OPEN
+          ;;
+      esac
+    ])
+  fi
+])
+
+AC_DEFUN([gl_REPLACE_ICONV_OPEN],
+[
+  gl_REPLACE_ICONV_H
+  REPLACE_ICONV_OPEN=1
+])
diff --git a/src/grep/m4/include_next.m4 b/src/grep/m4/include_next.m4
new file mode 100644
index 0000000..bdd542b
--- /dev/null
+++ b/src/grep/m4/include_next.m4
@@ -0,0 +1,224 @@
+# include_next.m4 serial 26
+dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert and Derek Price.
+
+dnl Sets INCLUDE_NEXT, INCLUDE_NEXT_AS_FIRST_DIRECTIVE, PRAGMA_SYSTEM_HEADER,
+dnl and PRAGMA_COLUMNS.
+dnl
+dnl INCLUDE_NEXT expands to 'include_next' if the compiler supports it, or to
+dnl 'include' otherwise.
+dnl
+dnl INCLUDE_NEXT_AS_FIRST_DIRECTIVE expands to 'include_next' if the compiler
+dnl supports it in the special case that it is the first include directive in
+dnl the given file, or to 'include' otherwise.
+dnl
+dnl PRAGMA_SYSTEM_HEADER can be used in files that contain #include_next,
+dnl so as to avoid GCC warnings when the gcc option -pedantic is used.
+dnl '#pragma GCC system_header' has the same effect as if the file was found
+dnl through the include search path specified with '-isystem' options (as
+dnl opposed to the search path specified with '-I' options). Namely, gcc
+dnl does not warn about some things, and on some systems (Solaris and Interix)
+dnl __STDC__ evaluates to 0 instead of to 1. The latter is an undesired side
+dnl effect; we are therefore careful to use 'defined __STDC__' or '1' instead
+dnl of plain '__STDC__'.
+dnl
+dnl PRAGMA_COLUMNS can be used in files that override system header files, so
+dnl as to avoid compilation errors on HP NonStop systems when the gnulib file
+dnl is included by a system header file that does a "#pragma COLUMNS 80" (which
+dnl has the effect of truncating the lines of that file and all files that it
+dnl includes to 80 columns) and the gnulib file has lines longer than 80
+dnl columns.
+
+AC_DEFUN([gl_INCLUDE_NEXT],
+[
+  AC_LANG_PREPROC_REQUIRE()
+  AC_CACHE_CHECK([whether the preprocessor supports include_next],
+    [gl_cv_have_include_next],
+    [rm -rf conftestd1a conftestd1b conftestd2
+     mkdir conftestd1a conftestd1b conftestd2
+     dnl IBM C 9.0, 10.1 (original versions, prior to the 2009-01 updates) on
+     dnl AIX 6.1 support include_next when used as first preprocessor directive
+     dnl in a file, but not when preceded by another include directive. Check
+     dnl for this bug by including <stdio.h>.
+     dnl Additionally, with this same compiler, include_next is a no-op when
+     dnl used in a header file that was included by specifying its absolute
+     dnl file name. Despite these two bugs, include_next is used in the
+     dnl compiler's <math.h>. By virtue of the second bug, we need to use
+     dnl include_next as well in this case.
+     cat <<EOF > conftestd1a/conftest.h
+#define DEFINED_IN_CONFTESTD1
+#include_next <conftest.h>
+#ifdef DEFINED_IN_CONFTESTD2
+int foo;
+#else
+#error "include_next doesn't work"
+#endif
+EOF
+     cat <<EOF > conftestd1b/conftest.h
+#define DEFINED_IN_CONFTESTD1
+#include <stdio.h>
+#include_next <conftest.h>
+#ifdef DEFINED_IN_CONFTESTD2
+int foo;
+#else
+#error "include_next doesn't work"
+#endif
+EOF
+     cat <<EOF > conftestd2/conftest.h
+#ifndef DEFINED_IN_CONFTESTD1
+#error "include_next test doesn't work"
+#endif
+#define DEFINED_IN_CONFTESTD2
+EOF
+     gl_save_CPPFLAGS="$CPPFLAGS"
+     CPPFLAGS="$gl_save_CPPFLAGS -Iconftestd1b -Iconftestd2"
+dnl We intentionally avoid using AC_LANG_SOURCE here.
+     AC_COMPILE_IFELSE([AC_LANG_DEFINES_PROVIDED[#include <conftest.h>]],
+       [gl_cv_have_include_next=yes],
+       [CPPFLAGS="$gl_save_CPPFLAGS -Iconftestd1a -Iconftestd2"
+        AC_COMPILE_IFELSE([AC_LANG_DEFINES_PROVIDED[#include <conftest.h>]],
+          [gl_cv_have_include_next=buggy],
+          [gl_cv_have_include_next=no])
+       ])
+     CPPFLAGS="$gl_save_CPPFLAGS"
+     rm -rf conftestd1a conftestd1b conftestd2
+    ])
+  PRAGMA_SYSTEM_HEADER=
+  if test $gl_cv_have_include_next = yes; then
+    INCLUDE_NEXT=include_next
+    INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include_next
+    if test -n "$GCC"; then
+      PRAGMA_SYSTEM_HEADER='#pragma GCC system_header'
+    fi
+  else
+    if test $gl_cv_have_include_next = buggy; then
+      INCLUDE_NEXT=include
+      INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include_next
+    else
+      INCLUDE_NEXT=include
+      INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include
+    fi
+  fi
+  AC_SUBST([INCLUDE_NEXT])
+  AC_SUBST([INCLUDE_NEXT_AS_FIRST_DIRECTIVE])
+  AC_SUBST([PRAGMA_SYSTEM_HEADER])
+
+  dnl HP NonStop systems, which define __TANDEM, limit the line length
+  dnl after including some system header files.
+  AC_CACHE_CHECK([whether source code line length is unlimited],
+    [gl_cv_source_line_length_unlimited],
+    [AC_EGREP_CPP([choke me],
+       [
+#ifdef __TANDEM
+choke me
+#endif
+       ],
+       [gl_cv_source_line_length_unlimited=no],
+       [gl_cv_source_line_length_unlimited=yes])
+    ])
+  if test $gl_cv_source_line_length_unlimited = no; then
+    PRAGMA_COLUMNS="#pragma COLUMNS 10000"
+  else
+    PRAGMA_COLUMNS=
+  fi
+  AC_SUBST([PRAGMA_COLUMNS])
+])
+
+# gl_CHECK_NEXT_HEADERS(HEADER1 HEADER2 ...)
+# ------------------------------------------
+# For each arg foo.h, if #include_next works, define NEXT_FOO_H to be
+# '<foo.h>'; otherwise define it to be
+# '"///usr/include/foo.h"', or whatever other absolute file name is suitable.
+# Also, if #include_next works as first preprocessing directive in a file,
+# define NEXT_AS_FIRST_DIRECTIVE_FOO_H to be '<foo.h>'; otherwise define it to
+# be
+# '"///usr/include/foo.h"', or whatever other absolute file name is suitable.
+# That way, a header file with the following line:
+#       #@INCLUDE_NEXT@ @NEXT_FOO_H@
+# or
+#       #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_FOO_H@
+# behaves (after sed substitution) as if it contained
+#       #include_next <foo.h>
+# even if the compiler does not support include_next.
+# The three "///" are to pacify Sun C 5.8, which otherwise would say
+# "warning: #include of /usr/include/... may be non-portable".
+# Use '""', not '<>', so that the /// cannot be confused with a C99 comment.
+# Note: This macro assumes that the header file is not empty after
+# preprocessing, i.e. it does not only define preprocessor macros but also
+# provides some type/enum definitions or function/variable declarations.
+#
+# This macro also checks whether each header exists, by invoking
+# AC_CHECK_HEADERS_ONCE or AC_CHECK_HEADERS on each argument.
+AC_DEFUN([gl_CHECK_NEXT_HEADERS],
+[
+  gl_NEXT_HEADERS_INTERNAL([$1], [check])
+])
+
+# gl_NEXT_HEADERS(HEADER1 HEADER2 ...)
+# ------------------------------------
+# Like gl_CHECK_NEXT_HEADERS, except do not check whether the headers exist.
+# This is suitable for headers like <stddef.h> that are standardized by C89
+# and therefore can be assumed to exist.
+AC_DEFUN([gl_NEXT_HEADERS],
+[
+  gl_NEXT_HEADERS_INTERNAL([$1], [assume])
+])
+
+# The guts of gl_CHECK_NEXT_HEADERS and gl_NEXT_HEADERS.
+AC_DEFUN([gl_NEXT_HEADERS_INTERNAL],
+[
+  AC_REQUIRE([gl_INCLUDE_NEXT])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  m4_if([$2], [check],
+    [AC_CHECK_HEADERS_ONCE([$1])
+    ])
+
+  m4_foreach_w([gl_HEADER_NAME], [$1],
+    [AS_VAR_PUSHDEF([gl_next_header],
+                    [gl_cv_next_]m4_defn([gl_HEADER_NAME]))
+     if test $gl_cv_have_include_next = yes; then
+       AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
+     else
+       AC_CACHE_CHECK(
+         [absolute name of <]m4_defn([gl_HEADER_NAME])[>],
+         [gl_next_header],
+         [m4_if([$2], [check],
+            [AS_VAR_PUSHDEF([gl_header_exists],
+                            [ac_cv_header_]m4_defn([gl_HEADER_NAME]))
+             if test AS_VAR_GET([gl_header_exists]) = yes; then
+             AS_VAR_POPDEF([gl_header_exists])
+            ])
+           gl_ABSOLUTE_HEADER_ONE(gl_HEADER_NAME)
+           AS_VAR_COPY([gl_header], [gl_cv_absolute_]AS_TR_SH(gl_HEADER_NAME))
+           AS_VAR_SET([gl_next_header], ['"'$gl_header'"'])
+          m4_if([$2], [check],
+            [else
+               AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
+             fi
+            ])
+         ])
+     fi
+     AC_SUBST(
+       AS_TR_CPP([NEXT_]m4_defn([gl_HEADER_NAME])),
+       [AS_VAR_GET([gl_next_header])])
+     if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+       gl_next_as_first_directive='<'gl_HEADER_NAME'>'
+     else
+       # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+       gl_next_as_first_directive=AS_VAR_GET([gl_next_header])
+     fi
+     AC_SUBST(
+       AS_TR_CPP([NEXT_AS_FIRST_DIRECTIVE_]m4_defn([gl_HEADER_NAME])),
+       [$gl_next_as_first_directive])
+     AS_VAR_POPDEF([gl_next_header])])
+])
+
+# Autoconf 2.68 added warnings for our use of AC_COMPILE_IFELSE;
+# this fallback is safe for all earlier autoconf versions.
+m4_define_default([AC_LANG_DEFINES_PROVIDED])
diff --git a/src/grep/m4/inet_pton.m4 b/src/grep/m4/inet_pton.m4
new file mode 100644
index 0000000..1979179
--- /dev/null
+++ b/src/grep/m4/inet_pton.m4
@@ -0,0 +1,70 @@
+# inet_pton.m4 serial 19
+dnl Copyright (C) 2006, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_INET_PTON],
+[
+  AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS])
+
+  dnl Persuade Solaris <arpa/inet.h> to declare inet_pton.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+
+  dnl Most platforms that provide inet_pton define it in libc.
+  dnl Solaris 8..10 provide inet_pton in libnsl instead.
+  dnl Solaris 2.6..7 provide inet_pton in libresolv instead.
+  dnl Haiku provides it in -lnetwork.
+  dnl Native Windows provides it in -lws2_32 instead, with a declaration in
+  dnl <ws2tcpip.h>, and it uses stdcall calling convention, not cdecl
+  dnl (hence we cannot use AC_CHECK_FUNCS, AC_SEARCH_LIBS to find it).
+  HAVE_INET_PTON=1
+  INET_PTON_LIB=
+  gl_PREREQ_SYS_H_WINSOCK2
+  if test $HAVE_WINSOCK2_H = 1; then
+    dnl It needs to be overridden, because the stdcall calling convention
+    dnl is not compliant with POSIX.  Set REPLACE_INET_PTON in order to avoid
+    dnl a name conflict at the linker level, even though the header file
+    dnl <ws2tcpip.h> declares inet_pton only if _WIN32_WINNT >= 0x0600.
+    REPLACE_INET_PTON=1
+    AC_CHECK_DECLS([inet_pton],,, [[#include <ws2tcpip.h>]])
+    if test $ac_cv_have_decl_inet_pton = yes; then
+      INET_PTON_LIB="-lws2_32"
+    else
+      HAVE_DECL_INET_PTON=0
+    fi
+  else
+    gl_save_LIBS=$LIBS
+    AC_SEARCH_LIBS([inet_pton], [nsl resolv network], [],
+      [AC_CHECK_FUNCS([inet_pton])
+       if test $ac_cv_func_inet_pton = no; then
+         HAVE_INET_PTON=0
+       fi
+      ])
+    LIBS=$gl_save_LIBS
+
+    if test "$ac_cv_search_inet_pton" != "no" \
+       && test "$ac_cv_search_inet_pton" != "none required"; then
+      INET_PTON_LIB="$ac_cv_search_inet_pton"
+    fi
+
+    AC_CHECK_HEADERS_ONCE([netdb.h])
+    AC_CHECK_DECLS([inet_pton],,,
+      [[#include <arpa/inet.h>
+        #if HAVE_NETDB_H
+        # include <netdb.h>
+        #endif
+      ]])
+    if test $ac_cv_have_decl_inet_pton = no; then
+      HAVE_DECL_INET_PTON=0
+    fi
+  fi
+  AC_SUBST([INET_PTON_LIB])
+])
+
+# Prerequisites of lib/inet_pton.c.
+AC_DEFUN([gl_PREREQ_INET_PTON], [
+  AC_REQUIRE([gl_SOCKET_FAMILIES])
+])
diff --git a/src/grep/m4/inline.m4 b/src/grep/m4/inline.m4
new file mode 100644
index 0000000..04fc774
--- /dev/null
+++ b/src/grep/m4/inline.m4
@@ -0,0 +1,40 @@
+# inline.m4 serial 4
+dnl Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Test for the 'inline' keyword or equivalent.
+dnl Define 'inline' to a supported equivalent, or to nothing if not supported,
+dnl like AC_C_INLINE does.  Also, define HAVE_INLINE if 'inline' or an
+dnl equivalent is effectively supported, i.e. if the compiler is likely to
+dnl drop unused 'static inline' functions.
+AC_DEFUN([gl_INLINE],
+[
+  AC_REQUIRE([AC_C_INLINE])
+  AC_CACHE_CHECK([whether the compiler generally respects inline],
+    [gl_cv_c_inline_effective],
+    [if test $ac_cv_c_inline = no; then
+       gl_cv_c_inline_effective=no
+     else
+       dnl GCC defines __NO_INLINE__ if not optimizing or if -fno-inline is
+       dnl specified.
+       dnl Use AC_COMPILE_IFELSE here, not AC_EGREP_CPP, because the result
+       dnl depends on optimization flags, which can be in CFLAGS.
+       dnl (AC_EGREP_CPP looks only at the CPPFLAGS.)
+       AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([[]],
+           [[#ifdef __NO_INLINE__
+               #error "inline is not effective"
+             #endif]])],
+         [gl_cv_c_inline_effective=yes],
+         [gl_cv_c_inline_effective=no])
+     fi
+    ])
+  if test $gl_cv_c_inline_effective = yes; then
+    AC_DEFINE([HAVE_INLINE], [1],
+      [Define to 1 if the compiler supports one of the keywords
+       'inline', '__inline__', '__inline' and effectively inlines
+       functions marked as such.])
+  fi
+])
diff --git a/src/grep/m4/intl-thread-locale.m4 b/src/grep/m4/intl-thread-locale.m4
new file mode 100644
index 0000000..890fec0
--- /dev/null
+++ b/src/grep/m4/intl-thread-locale.m4
@@ -0,0 +1,219 @@
+# intl-thread-locale.m4 serial 9
+dnl Copyright (C) 2015-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl
+dnl This file can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Lesser General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Lesser General Public License, and the rest of the GNU
+dnl gettext package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Check how to retrieve the name of a per-thread locale (POSIX locale_t).
+dnl Sets gt_nameless_locales.
+AC_DEFUN([gt_INTL_THREAD_LOCALE_NAME],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  dnl Persuade Solaris <locale.h> to define 'locale_t'.
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  dnl Test whether uselocale() exists and works at all.
+  gt_FUNC_USELOCALE
+
+  dnl On OpenBSD >= 6.2, the locale_t type and the uselocale(), newlocale(),
+  dnl duplocale(), freelocale() functions exist but are effectively useless,
+  dnl because the locale_t value depends only on the LC_CTYPE category of the
+  dnl locale and furthermore contains only one bit of information (it
+  dnl distinguishes the "C" locale from the *.UTF-8 locales). See
+  dnl <https://cvsweb.openbsd.org/src/lib/libc/locale/newlocale.c?rev=1.1&content-type=text/x-cvsweb-markup>.
+  dnl In the setlocale() implementation they have thought about the programs
+  dnl that use the API ("Even though only LC_CTYPE has any effect in the
+  dnl OpenBSD base system, store complete information about the global locale,
+  dnl such that third-party software can access it"), but for uselocale()
+  dnl they did not think about the programs.
+  dnl In this situation, even the HAVE_NAMELESS_LOCALES support does not work.
+  dnl So, define HAVE_FAKE_LOCALES and disable all locale_t support.
+  case "$gt_cv_func_uselocale_works" in
+    *yes)
+      AC_CHECK_HEADERS_ONCE([xlocale.h])
+      AC_CACHE_CHECK([for fake locale system (OpenBSD)],
+        [gt_cv_locale_fake],
+        [AC_RUN_IFELSE(
+           [AC_LANG_SOURCE([[
+#include <locale.h>
+#if HAVE_XLOCALE_H
+# include <xlocale.h>
+#endif
+int main ()
+{
+  locale_t loc1, loc2;
+  if (setlocale (LC_ALL, "de_DE.UTF-8") == NULL) return 1;
+  if (setlocale (LC_ALL, "fr_FR.UTF-8") == NULL) return 1;
+  loc1 = newlocale (LC_ALL_MASK, "de_DE.UTF-8", (locale_t)0);
+  loc2 = newlocale (LC_ALL_MASK, "fr_FR.UTF-8", (locale_t)0);
+  return !(loc1 == loc2);
+}]])],
+           [gt_cv_locale_fake=yes],
+           [gt_cv_locale_fake=no],
+           [dnl Guess the locale system is fake only on OpenBSD.
+            case "$host_os" in
+              openbsd*) gt_cv_locale_fake="guessing yes" ;;
+              *)        gt_cv_locale_fake="guessing no" ;;
+            esac
+           ])
+        ])
+      ;;
+    *) gt_cv_locale_fake=no ;;
+  esac
+  case "$gt_cv_locale_fake" in
+    *yes)
+      gt_fake_locales=yes
+      AC_DEFINE([HAVE_FAKE_LOCALES], [1],
+        [Define if the locale_t type contains insufficient information, as on OpenBSD.])
+      ;;
+    *)
+      gt_fake_locales=no
+      ;;
+  esac
+
+  case "$gt_cv_func_uselocale_works" in
+    *yes)
+      AC_CACHE_CHECK([for Solaris 11.4 locale system],
+        [gt_cv_locale_solaris114],
+        [case "$host_os" in
+           solaris*)
+             dnl Test whether <locale.h> defines locale_t as a typedef of
+             dnl 'struct _LC_locale_t **' (whereas Illumos defines it as a
+             dnl typedef of 'struct _locale *').
+             dnl Another possible test would be to include <sys/localedef.h>
+             dnl and test whether it defines the _LC_core_data_locale_t type.
+             dnl This type was added in Solaris 11.4.
+             AC_COMPILE_IFELSE(
+               [AC_LANG_PROGRAM([[
+                  #include <locale.h>
+                  struct _LC_locale_t *x;
+                  locale_t y;
+                ]],
+                [[*y = x;]])],
+               [gt_cv_locale_solaris114=yes],
+               [gt_cv_locale_solaris114=no])
+             ;;
+           *) gt_cv_locale_solaris114=no ;;
+         esac
+        ])
+      ;;
+    *) gt_cv_locale_solaris114=no ;;
+  esac
+  if test $gt_cv_locale_solaris114 = yes; then
+    AC_DEFINE([HAVE_SOLARIS114_LOCALES], [1],
+      [Define if the locale_t type is as on Solaris 11.4.])
+  fi
+
+  dnl Solaris 12 will maybe provide getlocalename_l.  If it does, it will
+  dnl improve the implementation of gl_locale_name_thread(), by removing
+  dnl the use of undocumented structures.
+  case "$gt_cv_func_uselocale_works" in
+    *yes)
+      AC_CHECK_FUNCS([getlocalename_l])
+      ;;
+  esac
+
+  dnl This code is for platforms where the locale_t type does not provide access
+  dnl to the name of each locale category.  This code has the drawback that it
+  dnl requires the gnulib overrides of 'newlocale', 'duplocale', 'freelocale',
+  dnl which is a problem for GNU libunistring.  Therefore try hard to avoid
+  dnl enabling this code!
+  gt_nameless_locales=no
+  case "$host_os" in
+    dnl It's needed on AIX 7.2.
+    aix*)
+      gt_nameless_locales=yes
+      AC_DEFINE([HAVE_NAMELESS_LOCALES], [1],
+        [Define if the locale_t type does not contain the name of each locale category.])
+      ;;
+  esac
+
+  dnl We cannot support uselocale() on platforms where the locale_t type is
+  dnl fake.  So, set
+  dnl   gt_good_uselocale = gt_working_uselocale && !gt_fake_locales.
+  if test $gt_working_uselocale = yes && test $gt_fake_locales = no; then
+    gt_good_uselocale=yes
+    AC_DEFINE([HAVE_GOOD_USELOCALE], [1],
+      [Define if the uselocale exists, may be safely called, and returns sufficient information.])
+  else
+    gt_good_uselocale=no
+  fi
+
+  dnl Set gt_localename_enhances_locale_funcs to indicate whether localename.c
+  dnl overrides newlocale(), duplocale(), freelocale() to keep track of locale
+  dnl names.
+  if test $gt_good_uselocale = yes && test $gt_nameless_locales = yes; then
+    gt_localename_enhances_locale_funcs=yes
+    LOCALENAME_ENHANCE_LOCALE_FUNCS=1
+    AC_DEFINE([LOCALENAME_ENHANCE_LOCALE_FUNCS], [1],
+      [Define if localename.c overrides newlocale(), duplocale(), freelocale().])
+  else
+    gt_localename_enhances_locale_funcs=no
+  fi
+])
+
+dnl Tests whether uselocale() exists and is usable.
+dnl Sets gt_working_uselocale and defines HAVE_WORKING_USELOCALE.
+AC_DEFUN([gt_FUNC_USELOCALE],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  dnl Persuade glibc and Solaris <locale.h> to define 'locale_t'.
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_CHECK_FUNCS_ONCE([uselocale])
+
+  dnl On AIX 7.2, the uselocale() function is not documented and leads to
+  dnl crashes in subsequent setlocale() invocations.
+  dnl In 2019, some versions of z/OS lack the locale_t type and have a broken
+  dnl uselocale function.
+  if test $ac_cv_func_uselocale = yes; then
+    AC_CHECK_HEADERS_ONCE([xlocale.h])
+    AC_CACHE_CHECK([whether uselocale works],
+      [gt_cv_func_uselocale_works],
+      [AC_RUN_IFELSE(
+         [AC_LANG_SOURCE([[
+#include <locale.h>
+#if HAVE_XLOCALE_H
+# include <xlocale.h>
+#endif
+locale_t loc1;
+int main ()
+{
+  uselocale (NULL);
+  setlocale (LC_ALL, "en_US.UTF-8");
+  return 0;
+}]])],
+         [gt_cv_func_uselocale_works=yes],
+         [gt_cv_func_uselocale_works=no],
+         [# Guess no on AIX and z/OS, yes otherwise.
+          case "$host_os" in
+            aix* | openedition*) gt_cv_func_uselocale_works="guessing no" ;;
+            *)                   gt_cv_func_uselocale_works="guessing yes" ;;
+          esac
+         ])
+      ])
+  else
+    gt_cv_func_uselocale_works=no
+  fi
+  case "$gt_cv_func_uselocale_works" in
+    *yes)
+      gt_working_uselocale=yes
+      AC_DEFINE([HAVE_WORKING_USELOCALE], [1],
+        [Define if the uselocale function exists and may safely be called.])
+      ;;
+    *)
+      gt_working_uselocale=no
+      ;;
+  esac
+])
diff --git a/src/grep/m4/intlmacosx.m4 b/src/grep/m4/intlmacosx.m4
new file mode 100644
index 0000000..4ae0d12
--- /dev/null
+++ b/src/grep/m4/intlmacosx.m4
@@ -0,0 +1,65 @@
+# intlmacosx.m4 serial 8 (gettext-0.20.2)
+dnl Copyright (C) 2004-2014, 2016, 2019-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl
+dnl This file can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Lesser General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Lesser General Public License, and the rest of the GNU
+dnl gettext package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Checks for special options needed on Mac OS X.
+dnl Defines INTL_MACOSX_LIBS.
+AC_DEFUN([gt_INTL_MACOSX],
+[
+  dnl Check for API introduced in Mac OS X 10.4.
+  AC_CACHE_CHECK([for CFPreferencesCopyAppValue],
+    [gt_cv_func_CFPreferencesCopyAppValue],
+    [gt_save_LIBS="$LIBS"
+     LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
+     AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <CoreFoundation/CFPreferences.h>]],
+          [[CFPreferencesCopyAppValue(NULL, NULL)]])],
+       [gt_cv_func_CFPreferencesCopyAppValue=yes],
+       [gt_cv_func_CFPreferencesCopyAppValue=no])
+     LIBS="$gt_save_LIBS"])
+  if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then
+    AC_DEFINE([HAVE_CFPREFERENCESCOPYAPPVALUE], [1],
+      [Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in the CoreFoundation framework.])
+  fi
+  dnl Don't check for the API introduced in Mac OS X 10.5, CFLocaleCopyCurrent,
+  dnl because in macOS 10.13.4 it has the following behaviour:
+  dnl When two or more languages are specified in the
+  dnl "System Preferences > Language & Region > Preferred Languages" panel,
+  dnl it returns en_CC where CC is the territory (even when English is not among
+  dnl the preferred languages!).  What we want instead is what
+  dnl CFLocaleCopyCurrent returned in earlier macOS releases and what
+  dnl CFPreferencesCopyAppValue still returns, namely ll_CC where ll is the
+  dnl first among the preferred languages and CC is the territory.
+  AC_CACHE_CHECK([for CFLocaleCopyPreferredLanguages], [gt_cv_func_CFLocaleCopyPreferredLanguages],
+    [gt_save_LIBS="$LIBS"
+     LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
+     AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <CoreFoundation/CFLocale.h>]],
+          [[CFLocaleCopyPreferredLanguages();]])],
+       [gt_cv_func_CFLocaleCopyPreferredLanguages=yes],
+       [gt_cv_func_CFLocaleCopyPreferredLanguages=no])
+     LIBS="$gt_save_LIBS"])
+  if test $gt_cv_func_CFLocaleCopyPreferredLanguages = yes; then
+    AC_DEFINE([HAVE_CFLOCALECOPYPREFERREDLANGUAGES], [1],
+      [Define to 1 if you have the Mac OS X function CFLocaleCopyPreferredLanguages in the CoreFoundation framework.])
+  fi
+  INTL_MACOSX_LIBS=
+  if test $gt_cv_func_CFPreferencesCopyAppValue = yes \
+     || test $gt_cv_func_CFLocaleCopyPreferredLanguages = yes; then
+    INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation"
+  fi
+  AC_SUBST([INTL_MACOSX_LIBS])
+])
diff --git a/src/grep/m4/intmax_t.m4 b/src/grep/m4/intmax_t.m4
new file mode 100644
index 0000000..63c4b41
--- /dev/null
+++ b/src/grep/m4/intmax_t.m4
@@ -0,0 +1,59 @@
+# intmax_t.m4 serial 9
+dnl Copyright (C) 1997-2004, 2006-2007, 2009-2021 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert.
+
+AC_PREREQ([2.53])
+
+# Define intmax_t to 'long' or 'long long'
+# if it is not already defined in <stdint.h> or <inttypes.h>.
+
+AC_DEFUN([gl_AC_TYPE_INTMAX_T],
+[
+  dnl For simplicity, we assume that a header file defines 'intmax_t' if and
+  dnl only if it defines 'uintmax_t'.
+  AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
+  AC_REQUIRE([gl_AC_HEADER_STDINT_H])
+  if test $gl_cv_header_inttypes_h = no && test $gl_cv_header_stdint_h = no; then
+    AC_DEFINE_UNQUOTED([intmax_t], [long long],
+     [Define to long or long long if <inttypes.h> and <stdint.h> don't define.])
+  else
+    AC_DEFINE([HAVE_INTMAX_T], [1],
+      [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
+  fi
+])
+
+dnl An alternative would be to explicitly test for 'intmax_t'.
+
+AC_DEFUN([gt_AC_TYPE_INTMAX_T],
+[
+  AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
+  AC_REQUIRE([gl_AC_HEADER_STDINT_H])
+  AC_CACHE_CHECK([for intmax_t], [gt_cv_c_intmax_t],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[
+#include <stddef.h>
+#include <stdlib.h>
+#if HAVE_STDINT_H_WITH_UINTMAX
+#include <stdint.h>
+#endif
+#if HAVE_INTTYPES_H_WITH_UINTMAX
+#include <inttypes.h>
+#endif
+          ]],
+          [[intmax_t x = -1; return !x;]])],
+       [gt_cv_c_intmax_t=yes],
+       [gt_cv_c_intmax_t=no])])
+  if test $gt_cv_c_intmax_t = yes; then
+    AC_DEFINE([HAVE_INTMAX_T], [1],
+      [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
+  else
+    AC_DEFINE_UNQUOTED([intmax_t], [long long],
+     [Define to long or long long if <stdint.h> and <inttypes.h> don't define.])
+  fi
+])
diff --git a/src/grep/m4/inttostr.m4 b/src/grep/m4/inttostr.m4
new file mode 100644
index 0000000..8a50d50
--- /dev/null
+++ b/src/grep/m4/inttostr.m4
@@ -0,0 +1,32 @@
+#serial 8
+dnl Copyright (C) 2004-2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_INTTOSTR],
+[
+  gl_PREREQ_INTTOSTR
+  gl_PREREQ_IMAXTOSTR
+  gl_PREREQ_OFFTOSTR
+  gl_PREREQ_UMAXTOSTR
+  gl_PREREQ_UINTTOSTR
+])
+
+# Prerequisites of lib/inttostr.h.
+AC_DEFUN([gl_PREREQ_INTTOSTR], [
+  AC_REQUIRE([AC_TYPE_OFF_T])
+  :
+])
+
+# Prerequisites of lib/imaxtostr.c.
+AC_DEFUN([gl_PREREQ_IMAXTOSTR], [:])
+
+# Prerequisites of lib/offtostr.c.
+AC_DEFUN([gl_PREREQ_OFFTOSTR], [:])
+
+# Prerequisites of lib/umaxtostr.c.
+AC_DEFUN([gl_PREREQ_UMAXTOSTR], [:])
+
+# Prerequisites of lib/uinttostr.c.
+AC_DEFUN([gl_PREREQ_UINTTOSTR], [:])
diff --git a/src/grep/m4/inttypes.m4 b/src/grep/m4/inttypes.m4
new file mode 100644
index 0000000..64b1de5
--- /dev/null
+++ b/src/grep/m4/inttypes.m4
@@ -0,0 +1,180 @@
+# inttypes.m4 serial 35
+dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Derek Price, Bruno Haible.
+dnl Test whether <inttypes.h> is supported or must be substituted.
+
+AC_DEFUN_ONCE([gl_INTTYPES_H],
+[
+  AC_REQUIRE([gl_INTTYPES_INCOMPLETE])
+  gl_INTTYPES_PRI_SCN
+])
+
+AC_DEFUN_ONCE([gl_INTTYPES_INCOMPLETE],
+[
+  AC_REQUIRE([gl_STDINT_H])
+  AC_CHECK_HEADERS_ONCE([inttypes.h])
+
+  dnl Override <inttypes.h> always, so that the portability warnings work.
+  AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])
+  gl_CHECK_NEXT_HEADERS([inttypes.h])
+
+  AC_REQUIRE([gl_MULTIARCH])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <inttypes.h>
+    ]], [imaxabs imaxdiv strtoimax strtoumax])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+])
+
+# Ensure that the PRI* and SCN* macros are defined appropriately.
+AC_DEFUN([gl_INTTYPES_PRI_SCN],
+[
+  PRIPTR_PREFIX=
+  if test -n "$STDINT_H"; then
+    dnl Using the gnulib <stdint.h>. It defines intptr_t to 'long' or
+    dnl 'long long', depending on _WIN64.
+    AC_COMPILE_IFELSE(
+      [AC_LANG_PROGRAM([[
+         #ifdef _WIN64
+         LLP64
+         #endif
+         ]])
+      ],
+      [PRIPTR_PREFIX='"l"'],
+      [PRIPTR_PREFIX='"ll"'])
+  else
+    dnl Using the system's <stdint.h>.
+    for glpfx in '' l ll I64; do
+      case $glpfx in
+        '')  gltype1='int';;
+        l)   gltype1='long int';;
+        ll)  gltype1='long long int';;
+        I64) gltype1='__int64';;
+      esac
+      AC_COMPILE_IFELSE(
+        [AC_LANG_PROGRAM([[#include <stdint.h>
+           extern intptr_t foo;
+           extern $gltype1 foo;]])],
+        [PRIPTR_PREFIX='"'$glpfx'"'])
+      test -n "$PRIPTR_PREFIX" && break
+    done
+  fi
+  AC_SUBST([PRIPTR_PREFIX])
+
+  gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION(
+    [INT32_MAX_LT_INTMAX_MAX],
+    [defined INT32_MAX && defined INTMAX_MAX],
+    [INT32_MAX < INTMAX_MAX],
+    [sizeof (int) < sizeof (long long int)])
+  if test $APPLE_UNIVERSAL_BUILD = 0; then
+    gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION(
+      [INT64_MAX_EQ_LONG_MAX],
+      [defined INT64_MAX],
+      [INT64_MAX == LONG_MAX],
+      [sizeof (long long int) == sizeof (long int)])
+  else
+    INT64_MAX_EQ_LONG_MAX=-1
+  fi
+  gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION(
+    [UINT32_MAX_LT_UINTMAX_MAX],
+    [defined UINT32_MAX && defined UINTMAX_MAX],
+    [UINT32_MAX < UINTMAX_MAX],
+    [sizeof (unsigned int) < sizeof (unsigned long long int)])
+  if test $APPLE_UNIVERSAL_BUILD = 0; then
+    gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION(
+      [UINT64_MAX_EQ_ULONG_MAX],
+      [defined UINT64_MAX],
+      [UINT64_MAX == ULONG_MAX],
+      [sizeof (unsigned long long int) == sizeof (unsigned long int)])
+  else
+    UINT64_MAX_EQ_ULONG_MAX=-1
+  fi
+])
+
+# Define the symbol $1 to be 1 if the condition is true, 0 otherwise.
+# If $2 is true, the condition is $3; otherwise if long long int is supported
+# approximate the condition with $4; otherwise, assume the condition is false.
+# The condition should work on all C99 platforms; the approximations should be
+# good enough to work on all practical pre-C99 platforms.
+# $2 is evaluated by the C preprocessor, $3 and $4 as compile-time constants.
+AC_DEFUN([gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION],
+[
+  AC_CACHE_CHECK([whether $3],
+    [gl_cv_test_$1],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[/* Work also in C++ mode.  */
+            #define __STDC_LIMIT_MACROS 1
+
+            /* Work if build is not clean.  */
+            #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H
+
+            #include <limits.h>
+            #if HAVE_STDINT_H
+             #include <stdint.h>
+            #endif
+
+            #if $2
+             #define CONDITION ($3)
+            #else
+             #define CONDITION ($4)
+            #endif
+            int test[CONDITION ? 1 : -1];]])],
+       [gl_cv_test_$1=yes],
+       [gl_cv_test_$1=no])])
+  if test $gl_cv_test_$1 = yes; then
+    $1=1;
+  else
+    $1=0;
+  fi
+  AC_SUBST([$1])
+])
+
+# gl_INTTYPES_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_INTTYPES_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_INTTYPES_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_INTTYPES_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_INTTYPES_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_IMAXABS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_IMAXDIV])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOIMAX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOUMAX])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_INTTYPES_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_INTTYPES_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_DECL_IMAXABS=1;   AC_SUBST([HAVE_DECL_IMAXABS])
+  HAVE_DECL_IMAXDIV=1;   AC_SUBST([HAVE_DECL_IMAXDIV])
+  HAVE_DECL_STRTOIMAX=1; AC_SUBST([HAVE_DECL_STRTOIMAX])
+  HAVE_DECL_STRTOUMAX=1; AC_SUBST([HAVE_DECL_STRTOUMAX])
+  HAVE_IMAXDIV_T=1;      AC_SUBST([HAVE_IMAXDIV_T])
+  REPLACE_STRTOIMAX=0;   AC_SUBST([REPLACE_STRTOIMAX])
+  REPLACE_STRTOUMAX=0;   AC_SUBST([REPLACE_STRTOUMAX])
+  INT32_MAX_LT_INTMAX_MAX=1;  AC_SUBST([INT32_MAX_LT_INTMAX_MAX])
+  INT64_MAX_EQ_LONG_MAX='defined _LP64';  AC_SUBST([INT64_MAX_EQ_LONG_MAX])
+  PRIPTR_PREFIX=__PRIPTR_PREFIX;  AC_SUBST([PRIPTR_PREFIX])
+  UINT32_MAX_LT_UINTMAX_MAX=1;  AC_SUBST([UINT32_MAX_LT_UINTMAX_MAX])
+  UINT64_MAX_EQ_ULONG_MAX='defined _LP64';  AC_SUBST([UINT64_MAX_EQ_ULONG_MAX])
+])
diff --git a/src/grep/m4/inttypes_h.m4 b/src/grep/m4/inttypes_h.m4
new file mode 100644
index 0000000..672a93e
--- /dev/null
+++ b/src/grep/m4/inttypes_h.m4
@@ -0,0 +1,29 @@
+# inttypes_h.m4 serial 10
+dnl Copyright (C) 1997-2004, 2006, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert.
+
+# Define HAVE_INTTYPES_H_WITH_UINTMAX if <inttypes.h> exists,
+# doesn't clash with <sys/types.h>, and declares uintmax_t.
+
+AC_DEFUN([gl_AC_HEADER_INTTYPES_H],
+[
+  AC_CACHE_CHECK([for inttypes.h], [gl_cv_header_inttypes_h],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[
+#include <sys/types.h>
+#include <inttypes.h>
+          ]],
+          [[uintmax_t i = (uintmax_t) -1; return !i;]])],
+       [gl_cv_header_inttypes_h=yes],
+       [gl_cv_header_inttypes_h=no])])
+  if test $gl_cv_header_inttypes_h = yes; then
+    AC_DEFINE_UNQUOTED([HAVE_INTTYPES_H_WITH_UINTMAX], [1],
+      [Define if <inttypes.h> exists, doesn't clash with <sys/types.h>,
+       and declares uintmax_t. ])
+  fi
+])
diff --git a/src/grep/m4/ioctl.m4 b/src/grep/m4/ioctl.m4
new file mode 100644
index 0000000..efd29f3
--- /dev/null
+++ b/src/grep/m4/ioctl.m4
@@ -0,0 +1,44 @@
+# ioctl.m4 serial 6
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_IOCTL],
+[
+  AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])
+  AC_REQUIRE([gl_SYS_SOCKET_H])
+  HAVE_IOCTL=1
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    dnl Even if the 'socket' module is not used here, another part of the
+    dnl application may use it and pass file descriptors that refer to
+    dnl sockets to the ioctl() function. So enable the support for sockets.
+    HAVE_IOCTL=0
+  else
+    AC_CHECK_FUNCS([ioctl])
+    dnl On glibc systems, the second parameter is 'unsigned long int request',
+    dnl not 'int request'. We cannot simply cast the function pointer, but
+    dnl instead need a wrapper.
+    AC_CACHE_CHECK([for ioctl with POSIX signature],
+      [gl_cv_func_ioctl_posix_signature],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <sys/ioctl.h>
+              /* On some platforms, ioctl() is declared in <unistd.h>.  */
+              #include <unistd.h>
+            ]],
+            [[extern
+              #ifdef __cplusplus
+              "C"
+              #endif
+              int ioctl (int, int, ...);
+            ]])
+         ],
+         [gl_cv_func_ioctl_posix_signature=yes],
+         [gl_cv_func_ioctl_posix_signature=no])
+      ])
+    if test $gl_cv_func_ioctl_posix_signature != yes; then
+      REPLACE_IOCTL=1
+    fi
+  fi
+])
diff --git a/src/grep/m4/isatty.m4 b/src/grep/m4/isatty.m4
new file mode 100644
index 0000000..330dc58
--- /dev/null
+++ b/src/grep/m4/isatty.m4
@@ -0,0 +1,19 @@
+# isatty.m4 serial 3
+dnl Copyright (C) 2012-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_ISATTY],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  dnl On native Windows, the system's isatty(), defined as an alias of _isatty()
+  dnl in the "oldnames" library, returns true for the NUL device.
+  case $host_os in
+    mingw*) REPLACE_ISATTY=1 ;;
+  esac
+])
+
+# Prerequisites of lib/isatty.c.
+AC_DEFUN([gl_PREREQ_ISATTY], [:])
diff --git a/src/grep/m4/isblank.m4 b/src/grep/m4/isblank.m4
new file mode 100644
index 0000000..e77e1a8
--- /dev/null
+++ b/src/grep/m4/isblank.m4
@@ -0,0 +1,17 @@
+# isblank.m4 serial 3
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_ISBLANK],
+[
+  dnl Persuade glibc <ctype.h> to declare isblank().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_REQUIRE([gl_CTYPE_H_DEFAULTS])
+  AC_CHECK_FUNCS_ONCE([isblank])
+  if test $ac_cv_func_isblank = no; then
+    HAVE_ISBLANK=0
+  fi
+])
diff --git a/src/grep/m4/iswblank.m4 b/src/grep/m4/iswblank.m4
new file mode 100644
index 0000000..84fd838
--- /dev/null
+++ b/src/grep/m4/iswblank.m4
@@ -0,0 +1,34 @@
+# iswblank.m4 serial 5
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_ISWBLANK],
+[
+  AC_REQUIRE([gl_WCTYPE_H_DEFAULTS])
+  AC_REQUIRE([gl_WCTYPE_H])
+  dnl Persuade glibc <wctype.h> to declare iswblank().
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_CHECK_FUNCS_ONCE([iswblank])
+  AC_CHECK_DECLS([iswblank], , , [[
+    #include <wchar.h>
+    #include <wctype.h>
+  ]])
+  if test $ac_cv_func_iswblank = no; then
+    HAVE_ISWBLANK=0
+    if test $ac_cv_have_decl_iswblank = yes; then
+      REPLACE_ISWBLANK=1
+    fi
+  fi
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+    dnl Redefine all of iswcntrl, ..., towupper in <wctype.h>.
+    :
+  else
+    if test $HAVE_ISWBLANK = 0 || test $REPLACE_ISWBLANK = 1; then
+      dnl Redefine only iswblank.
+      :
+    fi
+  fi
+
+])
diff --git a/src/grep/m4/iswctype.m4 b/src/grep/m4/iswctype.m4
new file mode 100644
index 0000000..646630e
--- /dev/null
+++ b/src/grep/m4/iswctype.m4
@@ -0,0 +1,11 @@
+# iswctype.m4 serial 2
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_ISWCTYPE],
+[
+  AC_REQUIRE([gl_WCTYPE_H_DEFAULTS])
+  AC_REQUIRE([gl_WCTYPE_H])
+])
diff --git a/src/grep/m4/iswdigit.m4 b/src/grep/m4/iswdigit.m4
new file mode 100644
index 0000000..de4ffce
--- /dev/null
+++ b/src/grep/m4/iswdigit.m4
@@ -0,0 +1,115 @@
+# iswdigit.m4 serial 3
+dnl Copyright (C) 2020-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_ISWDIGIT],
+[
+  AC_REQUIRE([gl_WCTYPE_H_DEFAULTS])
+  AC_REQUIRE([gl_WCTYPE_H])
+  AC_REQUIRE([gt_LOCALE_FR])
+  AC_REQUIRE([gt_LOCALE_JA])
+  AC_REQUIRE([gt_LOCALE_FR_UTF8])
+  AC_REQUIRE([gt_LOCALE_ZH_CN])
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+    dnl <wctype.h> redefines iswdigit already.
+    REPLACE_ISWDIGIT="$REPLACE_ISWCNTRL"
+  else
+    AC_CACHE_CHECK([whether iswdigit is ISO C compliant],
+      [gl_cv_func_iswdigit_works],
+      [
+       dnl Initial guess, used when cross-compiling or when no suitable locale
+       dnl is present.
+changequote(,)dnl
+       case "$host_os" in
+         # Guess no on FreeBSD, NetBSD, Solaris, native Windows.
+         freebsd* | dragonfly* | netbsd* | solaris* | mingw*)
+           gl_cv_func_iswdigit_works="guessing no" ;;
+         # Guess yes otherwise.
+         *) gl_cv_func_iswdigit_works="guessing yes" ;;
+       esac
+changequote([,])dnl
+       if test $LOCALE_FR != none || test $LOCALE_JA != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_ZH_CN != none; then
+         AC_RUN_IFELSE(
+           [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include <wctype.h>
+
+/* Returns the value of iswdigit for the multibyte character s[0..n-1].  */
+static int
+for_character (const char *s, size_t n)
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  memset (&state, '\0', sizeof (mbstate_t));
+  wc = (wchar_t) 0xBADFACE;
+  ret = mbrtowc (&wc, s, n, &state);
+  if (ret != n)
+    abort ();
+
+  return iswdigit (wc);
+}
+
+int
+main (int argc, char *argv[])
+{
+  int is;
+  int result = 0;
+
+  if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+    {
+      /* This fails on mingw, MSVC 14.  */
+      /* U+00B2 SUPERSCRIPT TWO */
+      is = for_character ("\262", 1);
+      if (!(is == 0))
+        result |= 1;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      /* This fails on NetBSD 8.0.  */
+      /* U+FF11 FULLWIDTH DIGIT ONE */
+      is = for_character ("\243\261", 2);
+      if (!(is == 0))
+        result |= 2;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      /* This fails on FreeBSD 13.0, NetBSD 8.0, MSVC 14.  */
+      /* U+0663 ARABIC-INDIC DIGIT THREE */
+      is = for_character ("\331\243", 2);
+      if (!(is == 0))
+        result |= 4;
+      /* This fails on FreeBSD 13.0, NetBSD 8.0, MSVC 14.  */
+      /* U+FF11 FULLWIDTH DIGIT ONE */
+      is = for_character ("\357\274\221", 3);
+      if (!(is == 0))
+        result |= 8;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      /* This fails on NetBSD 8.0, Solaris 10, Solaris 11.4.  */
+      /* U+FF11 FULLWIDTH DIGIT ONE */
+      is = for_character ("\243\261", 2);
+      if (!(is == 0))
+        result |= 16;
+    }
+  return result;
+}]])],
+           [gl_cv_func_iswdigit_works=yes],
+           [gl_cv_func_iswdigit_works=no],
+           [:])
+       fi
+      ])
+    case "$gl_cv_func_iswdigit_works" in
+      *yes) ;;
+      *) REPLACE_ISWDIGIT=1 ;;
+    esac
+  fi
+])
diff --git a/src/grep/m4/iswxdigit.m4 b/src/grep/m4/iswxdigit.m4
new file mode 100644
index 0000000..f96d735
--- /dev/null
+++ b/src/grep/m4/iswxdigit.m4
@@ -0,0 +1,106 @@
+# iswxdigit.m4 serial 3
+dnl Copyright (C) 2020-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_ISWXDIGIT],
+[
+  AC_REQUIRE([gl_WCTYPE_H_DEFAULTS])
+  AC_REQUIRE([gl_WCTYPE_H])
+  AC_REQUIRE([gt_LOCALE_JA])
+  AC_REQUIRE([gt_LOCALE_FR_UTF8])
+  AC_REQUIRE([gt_LOCALE_ZH_CN])
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+    dnl <wctype.h> redefines iswxdigit already.
+    REPLACE_ISWXDIGIT="$REPLACE_ISWCNTRL"
+  else
+    AC_CACHE_CHECK([whether iswxdigit is ISO C compliant],
+      [gl_cv_func_iswxdigit_works],
+      [
+       dnl Initial guess, used when cross-compiling or when no suitable locale
+       dnl is present.
+changequote(,)dnl
+       case "$host_os" in
+         # Guess no on FreeBSD, NetBSD, Solaris, native Windows.
+         freebsd* | dragonfly* | netbsd* | solaris* | mingw*)
+           gl_cv_func_iswxdigit_works="guessing no" ;;
+         # Guess yes otherwise.
+         *) gl_cv_func_iswxdigit_works="guessing yes" ;;
+       esac
+changequote([,])dnl
+       if test $LOCALE_JA != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_ZH_CN != none; then
+         AC_RUN_IFELSE(
+           [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include <wctype.h>
+
+/* Returns the value of iswxdigit for the multibyte character s[0..n-1].  */
+static int
+for_character (const char *s, size_t n)
+{
+  mbstate_t state;
+  wchar_t wc;
+  size_t ret;
+
+  memset (&state, '\0', sizeof (mbstate_t));
+  wc = (wchar_t) 0xBADFACE;
+  ret = mbrtowc (&wc, s, n, &state);
+  if (ret != n)
+    abort ();
+
+  return iswxdigit (wc);
+}
+
+int
+main (int argc, char *argv[])
+{
+  int is;
+  int result = 0;
+
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      /* This fails on NetBSD 8.0.  */
+      /* U+FF21 FULLWIDTH LATIN CAPITAL LETTER A */
+      is = for_character ("\243\301", 2);
+      if (!(is == 0))
+        result |= 1;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      /* This fails on FreeBSD 13.0.  */
+      /* U+0663 ARABIC-INDIC DIGIT THREE */
+      is = for_character ("\331\243", 2);
+      if (!(is == 0))
+        result |= 2;
+      /* This fails on MSVC 14.  */
+      /* U+FF21 FULLWIDTH LATIN CAPITAL LETTER A */
+      is = for_character ("\357\274\241", 3);
+      if (!(is == 0))
+        result |= 4;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      /* This fails on Solaris 10, Solaris 11.4.  */
+      /* U+FF11 FULLWIDTH DIGIT ONE */
+      is = for_character ("\243\261", 2);
+      if (!(is == 0))
+        result |= 8;
+    }
+  return result;
+}]])],
+           [gl_cv_func_iswxdigit_works=yes],
+           [gl_cv_func_iswxdigit_works=no],
+           [:])
+       fi
+      ])
+    case "$gl_cv_func_iswxdigit_works" in
+      *yes) ;;
+      *) REPLACE_ISWXDIGIT=1 ;;
+    esac
+  fi
+])
diff --git a/src/grep/m4/langinfo_h.m4 b/src/grep/m4/langinfo_h.m4
new file mode 100644
index 0000000..87959f7
--- /dev/null
+++ b/src/grep/m4/langinfo_h.m4
@@ -0,0 +1,137 @@
+# langinfo_h.m4 serial 12
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_LANGINFO_H],
+[
+  AC_REQUIRE([gl_LANGINFO_H_DEFAULTS])
+
+  dnl Persuade glibc-2.0.6 <langinfo.h> to define CODESET.
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  dnl <langinfo.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_CHECK_NEXT_HEADERS([langinfo.h])
+
+  dnl Determine whether <langinfo.h> exists. It is missing on mingw and BeOS.
+  HAVE_LANGINFO_CODESET=0
+  HAVE_LANGINFO_T_FMT_AMPM=0
+  HAVE_LANGINFO_ALTMON=0
+  HAVE_LANGINFO_ERA=0
+  HAVE_LANGINFO_YESEXPR=0
+  AC_CHECK_HEADERS_ONCE([langinfo.h])
+  if test $ac_cv_header_langinfo_h = yes; then
+    HAVE_LANGINFO_H=1
+    dnl Determine what <langinfo.h> defines.
+    dnl CODESET is missing on OpenBSD 3.8.
+    dnl ERA etc. are missing on OpenBSD 6.7.
+    dnl T_FMT_AMPM and YESEXPR, NOEXPR are missing on IRIX 5.3.
+    dnl ALTMON_* are missing on glibc 2.26 and many other systems.
+    AC_CACHE_CHECK([whether langinfo.h defines CODESET],
+      [gl_cv_header_langinfo_codeset],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([[#include <langinfo.h>
+int a = CODESET;
+]])],
+         [gl_cv_header_langinfo_codeset=yes],
+         [gl_cv_header_langinfo_codeset=no])
+      ])
+    if test $gl_cv_header_langinfo_codeset = yes; then
+      HAVE_LANGINFO_CODESET=1
+    fi
+    AC_CACHE_CHECK([whether langinfo.h defines T_FMT_AMPM],
+      [gl_cv_header_langinfo_t_fmt_ampm],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([[#include <langinfo.h>
+int a = T_FMT_AMPM;
+]])],
+         [gl_cv_header_langinfo_t_fmt_ampm=yes],
+         [gl_cv_header_langinfo_t_fmt_ampm=no])
+      ])
+    if test $gl_cv_header_langinfo_t_fmt_ampm = yes; then
+      HAVE_LANGINFO_T_FMT_AMPM=1
+    fi
+    AC_CACHE_CHECK([whether langinfo.h defines ALTMON_1],
+      [gl_cv_header_langinfo_altmon],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([[#include <langinfo.h>
+int a = ALTMON_1;
+]])],
+         [gl_cv_header_langinfo_altmon=yes],
+         [gl_cv_header_langinfo_altmon=no])
+      ])
+    if test $gl_cv_header_langinfo_altmon = yes; then
+      HAVE_LANGINFO_ALTMON=1
+    fi
+    AC_CACHE_CHECK([whether langinfo.h defines ERA],
+      [gl_cv_header_langinfo_era],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([[#include <langinfo.h>
+int a = ERA;
+]])],
+         [gl_cv_header_langinfo_era=yes],
+         [gl_cv_header_langinfo_era=no])
+      ])
+    if test $gl_cv_header_langinfo_era = yes; then
+      HAVE_LANGINFO_ERA=1
+    fi
+    AC_CACHE_CHECK([whether langinfo.h defines YESEXPR],
+      [gl_cv_header_langinfo_yesexpr],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([[#include <langinfo.h>
+int a = YESEXPR;
+]])],
+         [gl_cv_header_langinfo_yesexpr=yes],
+         [gl_cv_header_langinfo_yesexpr=no])
+      ])
+    if test $gl_cv_header_langinfo_yesexpr = yes; then
+      HAVE_LANGINFO_YESEXPR=1
+    fi
+  else
+    HAVE_LANGINFO_H=0
+  fi
+  AC_SUBST([HAVE_LANGINFO_H])
+  AC_SUBST([HAVE_LANGINFO_CODESET])
+  AC_SUBST([HAVE_LANGINFO_T_FMT_AMPM])
+  AC_SUBST([HAVE_LANGINFO_ALTMON])
+  AC_SUBST([HAVE_LANGINFO_ERA])
+  AC_SUBST([HAVE_LANGINFO_YESEXPR])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <langinfo.h>
+    ]], [nl_langinfo])
+])
+
+# gl_LANGINFO_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_LANGINFO_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_LANGINFO_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_LANGINFO_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_LANGINFO_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_NL_LANGINFO])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_LANGINFO_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_LANGINFO_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_LANGINFO_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_NL_LANGINFO=1;    AC_SUBST([HAVE_NL_LANGINFO])
+  REPLACE_NL_LANGINFO=0; AC_SUBST([REPLACE_NL_LANGINFO])
+])
diff --git a/src/grep/m4/largefile.m4 b/src/grep/m4/largefile.m4
new file mode 100644
index 0000000..fbde5e6
--- /dev/null
+++ b/src/grep/m4/largefile.m4
@@ -0,0 +1,180 @@
+# Enable large files on systems where this is not the default.
+# Enable support for files on Linux file systems with 64-bit inode numbers.
+
+# Copyright 1992-1996, 1998-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# The following macro works around a problem in Autoconf's AC_FUNC_FSEEKO:
+# It does not set _LARGEFILE_SOURCE=1 on HP-UX/ia64 32-bit, although this
+# setting of _LARGEFILE_SOURCE is needed so that <stdio.h> declares fseeko
+# and ftello in C++ mode as well.
+AC_DEFUN([gl_SET_LARGEFILE_SOURCE],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_FUNC_FSEEKO
+  case "$host_os" in
+    hpux*)
+      AC_DEFINE([_LARGEFILE_SOURCE], [1],
+        [Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2).])
+      ;;
+  esac
+])
+
+# Work around a problem in Autoconf through at least 2.71 on glibc 2.34+
+# with _TIME_BITS.  Also, work around a problem in autoconf <= 2.69:
+# AC_SYS_LARGEFILE does not configure for large inodes on Mac OS X 10.5,
+# or configures them incorrectly in some cases.
+m4_version_prereq([2.70], [], [
+
+# _AC_SYS_LARGEFILE_TEST_INCLUDES
+# -------------------------------
+m4_define([_AC_SYS_LARGEFILE_TEST_INCLUDES],
+[#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 31 << 31) - 1 + ((off_t) 1 << 31 << 31))
+  int off_t_is_large[[(LARGE_OFF_T % 2147483629 == 721
+                       && LARGE_OFF_T % 2147483647 == 1)
+                      ? 1 : -1]];[]dnl
+])
+])# m4_version_prereq 2.70
+
+
+# _AC_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, VALUE,
+#                               CACHE-VAR,
+#                               DESCRIPTION,
+#                               PROLOGUE, [FUNCTION-BODY])
+# --------------------------------------------------------
+m4_define([_AC_SYS_LARGEFILE_MACRO_VALUE],
+[AC_CACHE_CHECK([for $1 value needed for large files], [$3],
+[while :; do
+  m4_ifval([$6], [AC_LINK_IFELSE], [AC_COMPILE_IFELSE])(
+    [AC_LANG_PROGRAM([$5], [$6])],
+    [$3=no; break])
+  m4_ifval([$6], [AC_LINK_IFELSE], [AC_COMPILE_IFELSE])(
+    [AC_LANG_PROGRAM([#undef $1
+#define $1 $2
+$5], [$6])],
+    [$3=$2; break])
+  $3=unknown
+  break
+done])
+case $$3 in #(
+  no | unknown) ;;
+  *) AC_DEFINE_UNQUOTED([$1], [$$3], [$4]);;
+esac
+rm -rf conftest*[]dnl
+])# _AC_SYS_LARGEFILE_MACRO_VALUE
+
+
+# AC_SYS_LARGEFILE
+# ----------------
+# By default, many hosts won't let programs access large files;
+# one must use special compiler options to get large-file access to work.
+# For more details about this brain damage please see:
+# http://www.unix.org/version2/whatsnew/lfs20mar.html
+# Additionally, on Linux file systems with 64-bit inodes a file that happens
+# to have a 64-bit inode number cannot be accessed by 32-bit applications on
+# Linux x86/x86_64.  This can occur with file systems such as XFS and NFS.
+AC_DEFUN([AC_SYS_LARGEFILE],
+[AC_ARG_ENABLE(largefile,
+               [  --disable-largefile     omit support for large files])
+AS_IF([test "$enable_largefile" != no],
+ [AC_CACHE_CHECK([for special C compiler options needed for large files],
+    ac_cv_sys_largefile_CC,
+    [ac_cv_sys_largefile_CC=no
+     if test "$GCC" != yes; then
+       ac_save_CC=$CC
+       while :; do
+         # IRIX 6.2 and later do not support large files by default,
+         # so use the C compiler's -n32 option if that helps.
+         AC_LANG_CONFTEST([AC_LANG_PROGRAM([_AC_SYS_LARGEFILE_TEST_INCLUDES])])
+         AC_COMPILE_IFELSE([], [break])
+         CC="$CC -n32"
+         AC_COMPILE_IFELSE([], [ac_cv_sys_largefile_CC=' -n32'; break])
+         break
+       done
+       CC=$ac_save_CC
+       rm -f conftest.$ac_ext
+    fi])
+  if test "$ac_cv_sys_largefile_CC" != no; then
+    CC=$CC$ac_cv_sys_largefile_CC
+  fi
+
+  _AC_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, 64,
+    ac_cv_sys_file_offset_bits,
+    [Number of bits in a file offset, on hosts where this is settable.],
+    [_AC_SYS_LARGEFILE_TEST_INCLUDES])
+  AS_CASE([$ac_cv_sys_file_offset_bits],
+    [unknown],
+      [_AC_SYS_LARGEFILE_MACRO_VALUE([_LARGE_FILES], [1],
+         [ac_cv_sys_large_files],
+         [Define for large files, on AIX-style hosts.],
+         [_AC_SYS_LARGEFILE_TEST_INCLUDES])],
+    [64],
+      [gl_YEAR2038_BODY([])])])
+])# AC_SYS_LARGEFILE
+
+# Enable large files on systems where this is implemented by Gnulib, not by the
+# system headers.
+# Set the variables WINDOWS_64_BIT_OFF_T, WINDOWS_64_BIT_ST_SIZE if Gnulib
+# overrides ensure that off_t or 'struct size.st_size' are 64-bit, respectively.
+AC_DEFUN([gl_LARGEFILE],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    mingw*)
+      dnl Native Windows.
+      dnl mingw64 defines off_t to a 64-bit type already, if
+      dnl _FILE_OFFSET_BITS=64, which is ensured by AC_SYS_LARGEFILE.
+      AC_CACHE_CHECK([for 64-bit off_t], [gl_cv_type_off_t_64],
+        [AC_COMPILE_IFELSE(
+           [AC_LANG_PROGRAM(
+              [[#include <sys/types.h>
+                int verify_off_t_size[sizeof (off_t) >= 8 ? 1 : -1];
+              ]],
+              [[]])],
+           [gl_cv_type_off_t_64=yes], [gl_cv_type_off_t_64=no])
+        ])
+      if test $gl_cv_type_off_t_64 = no; then
+        WINDOWS_64_BIT_OFF_T=1
+      else
+        WINDOWS_64_BIT_OFF_T=0
+      fi
+      dnl Some mingw versions define, if _FILE_OFFSET_BITS=64, 'struct stat'
+      dnl to 'struct _stat32i64' or 'struct _stat64' (depending on
+      dnl _USE_32BIT_TIME_T), which has a 32-bit st_size member.
+      AC_CACHE_CHECK([for 64-bit st_size], [gl_cv_member_st_size_64],
+        [AC_COMPILE_IFELSE(
+           [AC_LANG_PROGRAM(
+              [[#include <sys/types.h>
+                struct stat buf;
+                int verify_st_size_size[sizeof (buf.st_size) >= 8 ? 1 : -1];
+              ]],
+              [[]])],
+           [gl_cv_member_st_size_64=yes], [gl_cv_member_st_size_64=no])
+        ])
+      if test $gl_cv_member_st_size_64 = no; then
+        WINDOWS_64_BIT_ST_SIZE=1
+      else
+        WINDOWS_64_BIT_ST_SIZE=0
+      fi
+      ;;
+    *)
+      dnl Nothing to do on gnulib's side.
+      dnl A 64-bit off_t is
+      dnl   - already the default on Mac OS X, FreeBSD, NetBSD, OpenBSD, IRIX,
+      dnl     OSF/1, Cygwin,
+      dnl   - enabled by _FILE_OFFSET_BITS=64 (ensured by AC_SYS_LARGEFILE) on
+      dnl     glibc, HP-UX, Solaris,
+      dnl   - enabled by _LARGE_FILES=1 (ensured by AC_SYS_LARGEFILE) on AIX,
+      dnl   - impossible to achieve on Minix 3.1.8.
+      WINDOWS_64_BIT_OFF_T=0
+      WINDOWS_64_BIT_ST_SIZE=0
+      ;;
+  esac
+])
diff --git a/src/grep/m4/lcmessage.m4 b/src/grep/m4/lcmessage.m4
new file mode 100644
index 0000000..a52700e
--- /dev/null
+++ b/src/grep/m4/lcmessage.m4
@@ -0,0 +1,35 @@
+# lcmessage.m4 serial 8
+dnl Copyright (C) 1995-2002, 2004-2005, 2008-2014, 2016, 2019-2021 Free
+dnl Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl
+dnl This file can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Lesser General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Lesser General Public License, and the rest of the GNU
+dnl gettext package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1995.
+
+# Check whether LC_MESSAGES is available in <locale.h>.
+
+AC_DEFUN([gt_LC_MESSAGES],
+[
+  AC_CACHE_CHECK([for LC_MESSAGES], [gt_cv_val_LC_MESSAGES],
+    [AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <locale.h>]],
+          [[return LC_MESSAGES]])],
+       [gt_cv_val_LC_MESSAGES=yes],
+       [gt_cv_val_LC_MESSAGES=no])])
+  if test $gt_cv_val_LC_MESSAGES = yes; then
+    AC_DEFINE([HAVE_LC_MESSAGES], [1],
+      [Define if your <locale.h> file defines LC_MESSAGES.])
+  fi
+])
diff --git a/src/grep/m4/lib-ld.m4 b/src/grep/m4/lib-ld.m4
new file mode 100644
index 0000000..076358d
--- /dev/null
+++ b/src/grep/m4/lib-ld.m4
@@ -0,0 +1,168 @@
+# lib-ld.m4 serial 10
+dnl Copyright (C) 1996-2003, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Subroutines of libtool.m4,
+dnl with replacements s/_*LT_PATH/AC_LIB_PROG/ and s/lt_/acl_/ to avoid
+dnl collision with libtool.m4.
+
+dnl From libtool-2.4. Sets the variable with_gnu_ld to yes or no.
+AC_DEFUN([AC_LIB_PROG_LD_GNU],
+[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld],
+[# I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+  acl_cv_prog_gnu_ld=yes
+  ;;
+*)
+  acl_cv_prog_gnu_ld=no
+  ;;
+esac])
+with_gnu_ld=$acl_cv_prog_gnu_ld
+])
+
+dnl From libtool-2.4. Sets the variable LD.
+AC_DEFUN([AC_LIB_PROG_LD],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+
+AC_ARG_WITH([gnu-ld],
+    [AS_HELP_STRING([--with-gnu-ld],
+        [assume the C compiler uses GNU ld [default=no]])],
+    [test "$withval" = no || with_gnu_ld=yes],
+    [with_gnu_ld=no])dnl
+
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
+  # contains only /bin. Note that ksh looks also at the FPATH variable,
+  # so we have to set that as well for the test.
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+           || PATH_SEPARATOR=';'
+       }
+fi
+
+if test -n "$LD"; then
+  AC_MSG_CHECKING([for ld])
+elif test "$GCC" = yes; then
+  AC_MSG_CHECKING([for ld used by $CC])
+elif test "$with_gnu_ld" = yes; then
+  AC_MSG_CHECKING([for GNU ld])
+else
+  AC_MSG_CHECKING([for non-GNU ld])
+fi
+if test -n "$LD"; then
+  # Let the user override the test with a path.
+  :
+else
+  AC_CACHE_VAL([acl_cv_path_LD],
+  [
+    acl_cv_path_LD= # Final result of this test
+    ac_prog=ld # Program to search in $PATH
+    if test "$GCC" = yes; then
+      # Check if gcc -print-prog-name=ld gives a path.
+      case $host in
+        *-*-mingw*)
+          # gcc leaves a trailing carriage return which upsets mingw
+          acl_output=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+        *)
+          acl_output=`($CC -print-prog-name=ld) 2>&5` ;;
+      esac
+      case $acl_output in
+        # Accept absolute paths.
+        [[\\/]]* | ?:[[\\/]]*)
+          re_direlt='/[[^/]][[^/]]*/\.\./'
+          # Canonicalize the pathname of ld
+          acl_output=`echo "$acl_output" | sed 's%\\\\%/%g'`
+          while echo "$acl_output" | grep "$re_direlt" > /dev/null 2>&1; do
+            acl_output=`echo $acl_output | sed "s%$re_direlt%/%"`
+          done
+          # Got the pathname. No search in PATH is needed.
+          acl_cv_path_LD="$acl_output"
+          ac_prog=
+          ;;
+        "")
+          # If it fails, then pretend we aren't using GCC.
+          ;;
+        *)
+          # If it is relative, then search for the first ld in PATH.
+          with_gnu_ld=unknown
+          ;;
+      esac
+    fi
+    if test -n "$ac_prog"; then
+      # Search for $ac_prog in $PATH.
+      acl_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+      for ac_dir in $PATH; do
+        IFS="$acl_save_ifs"
+        test -z "$ac_dir" && ac_dir=.
+        if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+          acl_cv_path_LD="$ac_dir/$ac_prog"
+          # Check to see if the program is GNU ld.  I'd rather use --version,
+          # but apparently some variants of GNU ld only accept -v.
+          # Break only if it was the GNU/non-GNU ld that we prefer.
+          case `"$acl_cv_path_LD" -v 2>&1 </dev/null` in
+            *GNU* | *'with BFD'*)
+              test "$with_gnu_ld" != no && break
+              ;;
+            *)
+              test "$with_gnu_ld" != yes && break
+              ;;
+          esac
+        fi
+      done
+      IFS="$acl_save_ifs"
+    fi
+    case $host in
+      *-*-aix*)
+        AC_COMPILE_IFELSE(
+          [AC_LANG_SOURCE(
+             [[#if defined __powerpc64__ || defined __LP64__
+                int ok;
+               #else
+                error fail
+               #endif
+             ]])],
+          [# The compiler produces 64-bit code. Add option '-b64' so that the
+           # linker groks 64-bit object files.
+           case "$acl_cv_path_LD " in
+             *" -b64 "*) ;;
+             *) acl_cv_path_LD="$acl_cv_path_LD -b64" ;;
+           esac
+          ], [])
+        ;;
+      sparc64-*-netbsd*)
+        AC_COMPILE_IFELSE(
+          [AC_LANG_SOURCE(
+             [[#if defined __sparcv9 || defined __arch64__
+                int ok;
+               #else
+                error fail
+               #endif
+             ]])],
+          [],
+          [# The compiler produces 32-bit code. Add option '-m elf32_sparc'
+           # so that the linker groks 32-bit object files.
+           case "$acl_cv_path_LD " in
+             *" -m elf32_sparc "*) ;;
+             *) acl_cv_path_LD="$acl_cv_path_LD -m elf32_sparc" ;;
+           esac
+          ])
+        ;;
+    esac
+  ])
+  LD="$acl_cv_path_LD"
+fi
+if test -n "$LD"; then
+  AC_MSG_RESULT([$LD])
+else
+  AC_MSG_RESULT([no])
+  AC_MSG_ERROR([no acceptable ld found in \$PATH])
+fi
+AC_LIB_PROG_LD_GNU
+])
diff --git a/src/grep/m4/lib-link.m4 b/src/grep/m4/lib-link.m4
new file mode 100644
index 0000000..787efab
--- /dev/null
+++ b/src/grep/m4/lib-link.m4
@@ -0,0 +1,813 @@
+# lib-link.m4 serial 32
+dnl Copyright (C) 2001-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_PREREQ([2.61])
+
+dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and
+dnl the libraries corresponding to explicit and implicit dependencies.
+dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and
+dnl augments the CPPFLAGS variable.
+dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
+dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
+AC_DEFUN([AC_LIB_LINKFLAGS],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+  pushdef([Name],[m4_translit([$1],[./+-], [____])])
+  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
+                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [
+    AC_LIB_LINKFLAGS_BODY([$1], [$2])
+    ac_cv_lib[]Name[]_libs="$LIB[]NAME"
+    ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME"
+    ac_cv_lib[]Name[]_cppflags="$INC[]NAME"
+    ac_cv_lib[]Name[]_prefix="$LIB[]NAME[]_PREFIX"
+  ])
+  LIB[]NAME="$ac_cv_lib[]Name[]_libs"
+  LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs"
+  INC[]NAME="$ac_cv_lib[]Name[]_cppflags"
+  LIB[]NAME[]_PREFIX="$ac_cv_lib[]Name[]_prefix"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+  AC_SUBST([LIB]NAME)
+  AC_SUBST([LTLIB]NAME)
+  AC_SUBST([LIB]NAME[_PREFIX])
+  dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the
+  dnl results of this search when this library appears as a dependency.
+  HAVE_LIB[]NAME=yes
+  popdef([NAME])
+  popdef([Name])
+])
+
+dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode, [missing-message])
+dnl searches for libname and the libraries corresponding to explicit and
+dnl implicit dependencies, together with the specified include files and
+dnl the ability to compile and link the specified testcode. The missing-message
+dnl defaults to 'no' and may contain additional hints for the user.
+dnl If found, it sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME}
+dnl and LTLIB${NAME} variables and augments the CPPFLAGS variable, and
+dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
+dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
+dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
+dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
+AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+  pushdef([Name],[m4_translit([$1],[./+-], [____])])
+  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
+                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+
+  dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME
+  dnl accordingly.
+  AC_LIB_LINKFLAGS_BODY([$1], [$2])
+
+  dnl Add $INC[]NAME to CPPFLAGS before performing the following checks,
+  dnl because if the user has installed lib[]Name and not disabled its use
+  dnl via --without-lib[]Name-prefix, he wants to use it.
+  ac_save_CPPFLAGS="$CPPFLAGS"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+
+  AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
+    ac_save_LIBS="$LIBS"
+    dnl If $LIB[]NAME contains some -l options, add it to the end of LIBS,
+    dnl because these -l options might require -L options that are present in
+    dnl LIBS. -l options benefit only from the -L options listed before it.
+    dnl Otherwise, add it to the front of LIBS, because it may be a static
+    dnl library that depends on another static library that is present in LIBS.
+    dnl Static libraries benefit only from the static libraries listed after
+    dnl it.
+    case " $LIB[]NAME" in
+      *" -l"*) LIBS="$LIBS $LIB[]NAME" ;;
+      *)       LIBS="$LIB[]NAME $LIBS" ;;
+    esac
+    AC_LINK_IFELSE(
+      [AC_LANG_PROGRAM([[$3]], [[$4]])],
+      [ac_cv_lib[]Name=yes],
+      [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])'])
+    LIBS="$ac_save_LIBS"
+  ])
+  if test "$ac_cv_lib[]Name" = yes; then
+    HAVE_LIB[]NAME=yes
+    AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the lib][$1 library.])
+    AC_MSG_CHECKING([how to link with lib[]$1])
+    AC_MSG_RESULT([$LIB[]NAME])
+  else
+    HAVE_LIB[]NAME=no
+    dnl If $LIB[]NAME didn't lead to a usable library, we don't need
+    dnl $INC[]NAME either.
+    CPPFLAGS="$ac_save_CPPFLAGS"
+    LIB[]NAME=
+    LTLIB[]NAME=
+    LIB[]NAME[]_PREFIX=
+  fi
+  AC_SUBST([HAVE_LIB]NAME)
+  AC_SUBST([LIB]NAME)
+  AC_SUBST([LTLIB]NAME)
+  AC_SUBST([LIB]NAME[_PREFIX])
+  popdef([NAME])
+  popdef([Name])
+])
+
+dnl Determine the platform dependent parameters needed to use rpath:
+dnl   acl_libext,
+dnl   acl_shlibext,
+dnl   acl_libname_spec,
+dnl   acl_library_names_spec,
+dnl   acl_hardcode_libdir_flag_spec,
+dnl   acl_hardcode_libdir_separator,
+dnl   acl_hardcode_direct,
+dnl   acl_hardcode_minus_L.
+AC_DEFUN([AC_LIB_RPATH],
+[
+  dnl Complain if config.rpath is missing.
+  AC_REQUIRE_AUX_FILE([config.rpath])
+  AC_REQUIRE([AC_PROG_CC])                dnl we use $CC, $GCC, $LDFLAGS
+  AC_REQUIRE([AC_LIB_PROG_LD])            dnl we use $LD, $with_gnu_ld
+  AC_REQUIRE([AC_CANONICAL_HOST])         dnl we use $host
+  AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
+  AC_CACHE_CHECK([for shared library run path origin], [acl_cv_rpath], [
+    CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
+    ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
+    . ./conftest.sh
+    rm -f ./conftest.sh
+    acl_cv_rpath=done
+  ])
+  wl="$acl_cv_wl"
+  acl_libext="$acl_cv_libext"
+  acl_shlibext="$acl_cv_shlibext"
+  acl_libname_spec="$acl_cv_libname_spec"
+  acl_library_names_spec="$acl_cv_library_names_spec"
+  acl_hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
+  acl_hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
+  acl_hardcode_direct="$acl_cv_hardcode_direct"
+  acl_hardcode_minus_L="$acl_cv_hardcode_minus_L"
+  dnl Determine whether the user wants rpath handling at all.
+  AC_ARG_ENABLE([rpath],
+    [  --disable-rpath         do not hardcode runtime library paths],
+    :, enable_rpath=yes)
+])
+
+dnl AC_LIB_FROMPACKAGE(name, package)
+dnl declares that libname comes from the given package. The configure file
+dnl will then not have a --with-libname-prefix option but a
+dnl --with-package-prefix option. Several libraries can come from the same
+dnl package. This declaration must occur before an AC_LIB_LINKFLAGS or similar
+dnl macro call that searches for libname.
+AC_DEFUN([AC_LIB_FROMPACKAGE],
+[
+  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
+                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  define([acl_frompackage_]NAME, [$2])
+  popdef([NAME])
+  pushdef([PACK],[$2])
+  pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
+                                     [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  define([acl_libsinpackage_]PACKUP,
+    m4_ifdef([acl_libsinpackage_]PACKUP, [m4_defn([acl_libsinpackage_]PACKUP)[, ]],)[lib$1])
+  popdef([PACKUP])
+  popdef([PACK])
+])
+
+dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and
+dnl the libraries corresponding to explicit and implicit dependencies.
+dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
+dnl Also, sets the LIB${NAME}_PREFIX variable to nonempty if libname was found
+dnl in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
+AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
+  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
+                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  pushdef([PACK],[m4_ifdef([acl_frompackage_]NAME, [acl_frompackage_]NAME, lib[$1])])
+  pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
+                                     [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  pushdef([PACKLIBS],[m4_ifdef([acl_frompackage_]NAME, [acl_libsinpackage_]PACKUP, lib[$1])])
+  dnl By default, look in $includedir and $libdir.
+  use_additional=yes
+  AC_LIB_WITH_FINAL_PREFIX([
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+    eval additional_libdir2=\"$exec_prefix/$acl_libdirstem2\"
+    eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\"
+  ])
+  AC_ARG_WITH(PACK[-prefix],
+[[  --with-]]PACK[[-prefix[=DIR]  search for ]PACKLIBS[ in DIR/include and DIR/lib
+  --without-]]PACK[[-prefix     don't search for ]PACKLIBS[ in includedir and libdir]],
+[
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+        AC_LIB_WITH_FINAL_PREFIX([
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+          eval additional_libdir2=\"$exec_prefix/$acl_libdirstem2\"
+          eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\"
+        ])
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/$acl_libdirstem"
+        additional_libdir2="$withval/$acl_libdirstem2"
+        additional_libdir3="$withval/$acl_libdirstem3"
+      fi
+    fi
+])
+  if test "X$additional_libdir2" = "X$additional_libdir"; then
+    additional_libdir2=
+  fi
+  if test "X$additional_libdir3" = "X$additional_libdir"; then
+    additional_libdir3=
+  fi
+  dnl Search the library and its dependencies in $additional_libdir and
+  dnl $LDFLAGS. Using breadth-first-seach.
+  LIB[]NAME=
+  LTLIB[]NAME=
+  INC[]NAME=
+  LIB[]NAME[]_PREFIX=
+  dnl HAVE_LIB${NAME} is an indicator that LIB${NAME}, LTLIB${NAME} have been
+  dnl computed. So it has to be reset here.
+  HAVE_LIB[]NAME=
+  rpathdirs=
+  ltrpathdirs=
+  names_already_handled=
+  names_next_round='$1 $2'
+  while test -n "$names_next_round"; do
+    names_this_round="$names_next_round"
+    names_next_round=
+    for name in $names_this_round; do
+      already_handled=
+      for n in $names_already_handled; do
+        if test "$n" = "$name"; then
+          already_handled=yes
+          break
+        fi
+      done
+      if test -z "$already_handled"; then
+        names_already_handled="$names_already_handled $name"
+        dnl See if it was already located by an earlier AC_LIB_LINKFLAGS
+        dnl or AC_LIB_HAVE_LINKFLAGS call.
+        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'`
+        eval value=\"\$HAVE_LIB$uppername\"
+        if test -n "$value"; then
+          if test "$value" = yes; then
+            eval value=\"\$LIB$uppername\"
+            test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value"
+            eval value=\"\$LTLIB$uppername\"
+            test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value"
+          else
+            dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined
+            dnl that this library doesn't exist. So just drop it.
+            :
+          fi
+        else
+          dnl Search the library lib$name in $additional_libdir and $LDFLAGS
+          dnl and the already constructed $LIBNAME/$LTLIBNAME.
+          found_dir=
+          found_la=
+          found_so=
+          found_a=
+          eval libname=\"$acl_libname_spec\"    # typically: libname=lib$name
+          if test -n "$acl_shlibext"; then
+            shrext=".$acl_shlibext"             # typically: shrext=.so
+          else
+            shrext=
+          fi
+          if test $use_additional = yes; then
+            for additional_libdir_variable in additional_libdir additional_libdir2 additional_libdir3; do
+              if test "X$found_dir" = "X"; then
+                eval dir=\$$additional_libdir_variable
+                if test -n "$dir"; then
+                  dnl The same code as in the loop below:
+                  dnl First look for a shared library.
+                  if test -n "$acl_shlibext"; then
+                    if test -f "$dir/$libname$shrext" && acl_is_expected_elfclass < "$dir/$libname$shrext"; then
+                      found_dir="$dir"
+                      found_so="$dir/$libname$shrext"
+                    else
+                      if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
+                        ver=`(cd "$dir" && \
+                              for f in "$libname$shrext".*; do echo "$f"; done \
+                              | sed -e "s,^$libname$shrext\\\\.,," \
+                              | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
+                              | sed 1q ) 2>/dev/null`
+                        if test -n "$ver" && test -f "$dir/$libname$shrext.$ver" && acl_is_expected_elfclass < "$dir/$libname$shrext.$ver"; then
+                          found_dir="$dir"
+                          found_so="$dir/$libname$shrext.$ver"
+                        fi
+                      else
+                        eval library_names=\"$acl_library_names_spec\"
+                        for f in $library_names; do
+                          if test -f "$dir/$f" && acl_is_expected_elfclass < "$dir/$f"; then
+                            found_dir="$dir"
+                            found_so="$dir/$f"
+                            break
+                          fi
+                        done
+                      fi
+                    fi
+                  fi
+                  dnl Then look for a static library.
+                  if test "X$found_dir" = "X"; then
+                    if test -f "$dir/$libname.$acl_libext" && ${AR-ar} -p "$dir/$libname.$acl_libext" | acl_is_expected_elfclass; then
+                      found_dir="$dir"
+                      found_a="$dir/$libname.$acl_libext"
+                    fi
+                  fi
+                  if test "X$found_dir" != "X"; then
+                    if test -f "$dir/$libname.la"; then
+                      found_la="$dir/$libname.la"
+                    fi
+                  fi
+                fi
+              fi
+            done
+          fi
+          if test "X$found_dir" = "X"; then
+            for x in $LDFLAGS $LTLIB[]NAME; do
+              AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+              case "$x" in
+                -L*)
+                  dir=`echo "X$x" | sed -e 's/^X-L//'`
+                  dnl First look for a shared library.
+                  if test -n "$acl_shlibext"; then
+                    if test -f "$dir/$libname$shrext" && acl_is_expected_elfclass < "$dir/$libname$shrext"; then
+                      found_dir="$dir"
+                      found_so="$dir/$libname$shrext"
+                    else
+                      if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
+                        ver=`(cd "$dir" && \
+                              for f in "$libname$shrext".*; do echo "$f"; done \
+                              | sed -e "s,^$libname$shrext\\\\.,," \
+                              | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
+                              | sed 1q ) 2>/dev/null`
+                        if test -n "$ver" && test -f "$dir/$libname$shrext.$ver" && acl_is_expected_elfclass < "$dir/$libname$shrext.$ver"; then
+                          found_dir="$dir"
+                          found_so="$dir/$libname$shrext.$ver"
+                        fi
+                      else
+                        eval library_names=\"$acl_library_names_spec\"
+                        for f in $library_names; do
+                          if test -f "$dir/$f" && acl_is_expected_elfclass < "$dir/$f"; then
+                            found_dir="$dir"
+                            found_so="$dir/$f"
+                            break
+                          fi
+                        done
+                      fi
+                    fi
+                  fi
+                  dnl Then look for a static library.
+                  if test "X$found_dir" = "X"; then
+                    if test -f "$dir/$libname.$acl_libext" && ${AR-ar} -p "$dir/$libname.$acl_libext" | acl_is_expected_elfclass; then
+                      found_dir="$dir"
+                      found_a="$dir/$libname.$acl_libext"
+                    fi
+                  fi
+                  if test "X$found_dir" != "X"; then
+                    if test -f "$dir/$libname.la"; then
+                      found_la="$dir/$libname.la"
+                    fi
+                  fi
+                  ;;
+              esac
+              if test "X$found_dir" != "X"; then
+                break
+              fi
+            done
+          fi
+          if test "X$found_dir" != "X"; then
+            dnl Found the library.
+            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name"
+            if test "X$found_so" != "X"; then
+              dnl Linking with a shared library. We attempt to hardcode its
+              dnl directory into the executable's runpath, unless it's the
+              dnl standard /usr/lib.
+              if test "$enable_rpath" = no \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem" \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem2" \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem3"; then
+                dnl No hardcoding is needed.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+              else
+                dnl Use an explicit option to hardcode DIR into the resulting
+                dnl binary.
+                dnl Potentially add DIR to ltrpathdirs.
+                dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
+                haveit=
+                for x in $ltrpathdirs; do
+                  if test "X$x" = "X$found_dir"; then
+                    haveit=yes
+                    break
+                  fi
+                done
+                if test -z "$haveit"; then
+                  ltrpathdirs="$ltrpathdirs $found_dir"
+                fi
+                dnl The hardcoding into $LIBNAME is system dependent.
+                if test "$acl_hardcode_direct" = yes; then
+                  dnl Using DIR/libNAME.so during linking hardcodes DIR into the
+                  dnl resulting binary.
+                  LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                else
+                  if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
+                    dnl Use an explicit option to hardcode DIR into the resulting
+                    dnl binary.
+                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                    dnl Potentially add DIR to rpathdirs.
+                    dnl The rpathdirs will be appended to $LIBNAME at the end.
+                    haveit=
+                    for x in $rpathdirs; do
+                      if test "X$x" = "X$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      rpathdirs="$rpathdirs $found_dir"
+                    fi
+                  else
+                    dnl Rely on "-L$found_dir".
+                    dnl But don't add it if it's already contained in the LDFLAGS
+                    dnl or the already constructed $LIBNAME
+                    haveit=
+                    for x in $LDFLAGS $LIB[]NAME; do
+                      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                      if test "X$x" = "X-L$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir"
+                    fi
+                    if test "$acl_hardcode_minus_L" != no; then
+                      dnl FIXME: Not sure whether we should use
+                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
+                      dnl here.
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                    else
+                      dnl We cannot use $acl_hardcode_runpath_var and LD_RUN_PATH
+                      dnl here, because this doesn't fit in flags passed to the
+                      dnl compiler. So give up. No hardcoding. This affects only
+                      dnl very old systems.
+                      dnl FIXME: Not sure whether we should use
+                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
+                      dnl here.
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
+                    fi
+                  fi
+                fi
+              fi
+            else
+              if test "X$found_a" != "X"; then
+                dnl Linking with a static library.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a"
+              else
+                dnl We shouldn't come here, but anyway it's good to have a
+                dnl fallback.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name"
+              fi
+            fi
+            dnl Assume the include files are nearby.
+            additional_includedir=
+            case "$found_dir" in
+              */$acl_libdirstem | */$acl_libdirstem/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'`
+                if test "$name" = '$1'; then
+                  LIB[]NAME[]_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+              */$acl_libdirstem2 | */$acl_libdirstem2/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'`
+                if test "$name" = '$1'; then
+                  LIB[]NAME[]_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+              */$acl_libdirstem3 | */$acl_libdirstem3/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem3/"'*$,,'`
+                if test "$name" = '$1'; then
+                  LIB[]NAME[]_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+            esac
+            if test "X$additional_includedir" != "X"; then
+              dnl Potentially add $additional_includedir to $INCNAME.
+              dnl But don't add it
+              dnl   1. if it's the standard /usr/include,
+              dnl   2. if it's /usr/local/include and we are using GCC on Linux,
+              dnl   3. if it's already present in $CPPFLAGS or the already
+              dnl      constructed $INCNAME,
+              dnl   4. if it doesn't exist as a directory.
+              if test "X$additional_includedir" != "X/usr/include"; then
+                haveit=
+                if test "X$additional_includedir" = "X/usr/local/include"; then
+                  if test -n "$GCC"; then
+                    case $host_os in
+                      linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+                    esac
+                  fi
+                fi
+                if test -z "$haveit"; then
+                  for x in $CPPFLAGS $INC[]NAME; do
+                    AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                    if test "X$x" = "X-I$additional_includedir"; then
+                      haveit=yes
+                      break
+                    fi
+                  done
+                  if test -z "$haveit"; then
+                    if test -d "$additional_includedir"; then
+                      dnl Really add $additional_includedir to $INCNAME.
+                      INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir"
+                    fi
+                  fi
+                fi
+              fi
+            fi
+            dnl Look for dependencies.
+            if test -n "$found_la"; then
+              dnl Read the .la file. It defines the variables
+              dnl dlname, library_names, old_library, dependency_libs, current,
+              dnl age, revision, installed, dlopen, dlpreopen, libdir.
+              save_libdir="$libdir"
+              case "$found_la" in
+                */* | *\\*) . "$found_la" ;;
+                *) . "./$found_la" ;;
+              esac
+              libdir="$save_libdir"
+              dnl We use only dependency_libs.
+              for dep in $dependency_libs; do
+                case "$dep" in
+                  -L*)
+                    dependency_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+                    dnl Potentially add $dependency_libdir to $LIBNAME and $LTLIBNAME.
+                    dnl But don't add it
+                    dnl   1. if it's the standard /usr/lib,
+                    dnl   2. if it's /usr/local/lib and we are using GCC on Linux,
+                    dnl   3. if it's already present in $LDFLAGS or the already
+                    dnl      constructed $LIBNAME,
+                    dnl   4. if it doesn't exist as a directory.
+                    if test "X$dependency_libdir" != "X/usr/$acl_libdirstem" \
+                       && test "X$dependency_libdir" != "X/usr/$acl_libdirstem2" \
+                       && test "X$dependency_libdir" != "X/usr/$acl_libdirstem3"; then
+                      haveit=
+                      if test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem" \
+                         || test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem2" \
+                         || test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem3"; then
+                        if test -n "$GCC"; then
+                          case $host_os in
+                            linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+                          esac
+                        fi
+                      fi
+                      if test -z "$haveit"; then
+                        haveit=
+                        for x in $LDFLAGS $LIB[]NAME; do
+                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                          if test "X$x" = "X-L$dependency_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$dependency_libdir"; then
+                            dnl Really add $dependency_libdir to $LIBNAME.
+                            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$dependency_libdir"
+                          fi
+                        fi
+                        haveit=
+                        for x in $LDFLAGS $LTLIB[]NAME; do
+                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                          if test "X$x" = "X-L$dependency_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$dependency_libdir"; then
+                            dnl Really add $dependency_libdir to $LTLIBNAME.
+                            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$dependency_libdir"
+                          fi
+                        fi
+                      fi
+                    fi
+                    ;;
+                  -R*)
+                    dir=`echo "X$dep" | sed -e 's/^X-R//'`
+                    if test "$enable_rpath" != no; then
+                      dnl Potentially add DIR to rpathdirs.
+                      dnl The rpathdirs will be appended to $LIBNAME at the end.
+                      haveit=
+                      for x in $rpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        rpathdirs="$rpathdirs $dir"
+                      fi
+                      dnl Potentially add DIR to ltrpathdirs.
+                      dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
+                      haveit=
+                      for x in $ltrpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        ltrpathdirs="$ltrpathdirs $dir"
+                      fi
+                    fi
+                    ;;
+                  -l*)
+                    dnl Handle this in the next round.
+                    dnl But on GNU systems, ignore -lc options, because
+                    dnl   - linking with libc is the default anyway,
+                    dnl   - linking with libc.a may produce an error
+                    dnl     "/usr/bin/ld: dynamic STT_GNU_IFUNC symbol `strcmp' with pointer equality in `/usr/lib/libc.a(strcmp.o)' can not be used when making an executable; recompile with -fPIE and relink with -pie"
+                    dnl     or may produce an executable that always crashes, see
+                    dnl     <https://lists.gnu.org/archive/html/grep-devel/2020-09/msg00052.html>.
+                    dep=`echo "X$dep" | sed -e 's/^X-l//'`
+                    if test "X$dep" != Xc \
+                       || case $host_os in
+                            linux* | gnu* | k*bsd*-gnu) false ;;
+                            *)                          true ;;
+                          esac; then
+                      names_next_round="$names_next_round $dep"
+                    fi
+                    ;;
+                  *.la)
+                    dnl Handle this in the next round. Throw away the .la's
+                    dnl directory; it is already contained in a preceding -L
+                    dnl option.
+                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+                    ;;
+                  *)
+                    dnl Most likely an immediate library name.
+                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep"
+                    LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep"
+                    ;;
+                esac
+              done
+            fi
+          else
+            dnl Didn't find the library; assume it is in the system directories
+            dnl known to the linker and runtime loader. (All the system
+            dnl directories known to the linker should also be known to the
+            dnl runtime loader, otherwise the system is severely misconfigured.)
+            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
+            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name"
+          fi
+        fi
+      fi
+    done
+  done
+  if test "X$rpathdirs" != "X"; then
+    if test -n "$acl_hardcode_libdir_separator"; then
+      dnl Weird platform: only the last -rpath option counts, the user must
+      dnl pass all path elements in one option. We can arrange that for a
+      dnl single library, but not when more than one $LIBNAMEs are used.
+      alldirs=
+      for found_dir in $rpathdirs; do
+        alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir"
+      done
+      dnl Note: acl_hardcode_libdir_flag_spec uses $libdir and $wl.
+      acl_save_libdir="$libdir"
+      libdir="$alldirs"
+      eval flag=\"$acl_hardcode_libdir_flag_spec\"
+      libdir="$acl_save_libdir"
+      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+    else
+      dnl The -rpath options are cumulative.
+      for found_dir in $rpathdirs; do
+        acl_save_libdir="$libdir"
+        libdir="$found_dir"
+        eval flag=\"$acl_hardcode_libdir_flag_spec\"
+        libdir="$acl_save_libdir"
+        LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+      done
+    fi
+  fi
+  if test "X$ltrpathdirs" != "X"; then
+    dnl When using libtool, the option that works for both libraries and
+    dnl executables is -R. The -R options are cumulative.
+    for found_dir in $ltrpathdirs; do
+      LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir"
+    done
+  fi
+  popdef([PACKLIBS])
+  popdef([PACKUP])
+  popdef([PACK])
+  popdef([NAME])
+])
+
+dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR,
+dnl unless already present in VAR.
+dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes
+dnl contains two or three consecutive elements that belong together.
+AC_DEFUN([AC_LIB_APPENDTOVAR],
+[
+  for element in [$2]; do
+    haveit=
+    for x in $[$1]; do
+      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      [$1]="${[$1]}${[$1]:+ }$element"
+    fi
+  done
+])
+
+dnl For those cases where a variable contains several -L and -l options
+dnl referring to unknown libraries and directories, this macro determines the
+dnl necessary additional linker options for the runtime path.
+dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL])
+dnl sets LDADDVAR to linker options needed together with LIBSVALUE.
+dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed,
+dnl otherwise linking without libtool is assumed.
+AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS],
+[
+  AC_REQUIRE([AC_LIB_RPATH])
+  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
+  $1=
+  if test "$enable_rpath" != no; then
+    if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
+      dnl Use an explicit option to hardcode directories into the resulting
+      dnl binary.
+      rpathdirs=
+      next=
+      for opt in $2; do
+        if test -n "$next"; then
+          dir="$next"
+          dnl No need to hardcode the standard /usr/lib.
+          if test "X$dir" != "X/usr/$acl_libdirstem" \
+             && test "X$dir" != "X/usr/$acl_libdirstem2" \
+             && test "X$dir" != "X/usr/$acl_libdirstem3"; then
+            rpathdirs="$rpathdirs $dir"
+          fi
+          next=
+        else
+          case $opt in
+            -L) next=yes ;;
+            -L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'`
+                 dnl No need to hardcode the standard /usr/lib.
+                 if test "X$dir" != "X/usr/$acl_libdirstem" \
+                    && test "X$dir" != "X/usr/$acl_libdirstem2" \
+                    && test "X$dir" != "X/usr/$acl_libdirstem3"; then
+                   rpathdirs="$rpathdirs $dir"
+                 fi
+                 next= ;;
+            *) next= ;;
+          esac
+        fi
+      done
+      if test "X$rpathdirs" != "X"; then
+        if test -n ""$3""; then
+          dnl libtool is used for linking. Use -R options.
+          for dir in $rpathdirs; do
+            $1="${$1}${$1:+ }-R$dir"
+          done
+        else
+          dnl The linker is used for linking directly.
+          if test -n "$acl_hardcode_libdir_separator"; then
+            dnl Weird platform: only the last -rpath option counts, the user
+            dnl must pass all path elements in one option.
+            alldirs=
+            for dir in $rpathdirs; do
+              alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$dir"
+            done
+            acl_save_libdir="$libdir"
+            libdir="$alldirs"
+            eval flag=\"$acl_hardcode_libdir_flag_spec\"
+            libdir="$acl_save_libdir"
+            $1="$flag"
+          else
+            dnl The -rpath options are cumulative.
+            for dir in $rpathdirs; do
+              acl_save_libdir="$libdir"
+              libdir="$dir"
+              eval flag=\"$acl_hardcode_libdir_flag_spec\"
+              libdir="$acl_save_libdir"
+              $1="${$1}${$1:+ }$flag"
+            done
+          fi
+        fi
+      fi
+    fi
+  fi
+  AC_SUBST([$1])
+])
diff --git a/src/grep/m4/lib-prefix.m4 b/src/grep/m4/lib-prefix.m4
new file mode 100644
index 0000000..3c94db0
--- /dev/null
+++ b/src/grep/m4/lib-prefix.m4
@@ -0,0 +1,323 @@
+# lib-prefix.m4 serial 19
+dnl Copyright (C) 2001-2005, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
+dnl to access previously installed libraries. The basic assumption is that
+dnl a user will want packages to use other packages he previously installed
+dnl with the same --prefix option.
+dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
+dnl libraries, but is otherwise very convenient.
+AC_DEFUN([AC_LIB_PREFIX],
+[
+  AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  dnl By default, look in $includedir and $libdir.
+  use_additional=yes
+  AC_LIB_WITH_FINAL_PREFIX([
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+  ])
+  AC_ARG_WITH([lib-prefix],
+[[  --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
+  --without-lib-prefix    don't search for libraries in includedir and libdir]],
+[
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+        AC_LIB_WITH_FINAL_PREFIX([
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+        ])
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/$acl_libdirstem"
+      fi
+    fi
+])
+  if test $use_additional = yes; then
+    dnl Potentially add $additional_includedir to $CPPFLAGS.
+    dnl But don't add it
+    dnl   1. if it's the standard /usr/include,
+    dnl   2. if it's already present in $CPPFLAGS,
+    dnl   3. if it's /usr/local/include and we are using GCC on Linux,
+    dnl   4. if it doesn't exist as a directory.
+    if test "X$additional_includedir" != "X/usr/include"; then
+      haveit=
+      for x in $CPPFLAGS; do
+        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+        if test "X$x" = "X-I$additional_includedir"; then
+          haveit=yes
+          break
+        fi
+      done
+      if test -z "$haveit"; then
+        if test "X$additional_includedir" = "X/usr/local/include"; then
+          if test -n "$GCC"; then
+            case $host_os in
+              linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+            esac
+          fi
+        fi
+        if test -z "$haveit"; then
+          if test -d "$additional_includedir"; then
+            dnl Really add $additional_includedir to $CPPFLAGS.
+            CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
+          fi
+        fi
+      fi
+    fi
+    dnl Potentially add $additional_libdir to $LDFLAGS.
+    dnl But don't add it
+    dnl   1. if it's the standard /usr/lib,
+    dnl   2. if it's already present in $LDFLAGS,
+    dnl   3. if it's /usr/local/lib and we are using GCC on Linux,
+    dnl   4. if it doesn't exist as a directory.
+    if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then
+      haveit=
+      for x in $LDFLAGS; do
+        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+        if test "X$x" = "X-L$additional_libdir"; then
+          haveit=yes
+          break
+        fi
+      done
+      if test -z "$haveit"; then
+        if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then
+          if test -n "$GCC"; then
+            case $host_os in
+              linux*) haveit=yes;;
+            esac
+          fi
+        fi
+        if test -z "$haveit"; then
+          if test -d "$additional_libdir"; then
+            dnl Really add $additional_libdir to $LDFLAGS.
+            LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
+          fi
+        fi
+      fi
+    fi
+  fi
+])
+
+dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
+dnl acl_final_exec_prefix, containing the values to which $prefix and
+dnl $exec_prefix will expand at the end of the configure script.
+AC_DEFUN([AC_LIB_PREPARE_PREFIX],
+[
+  dnl Unfortunately, prefix and exec_prefix get only finally determined
+  dnl at the end of configure.
+  if test "X$prefix" = "XNONE"; then
+    acl_final_prefix="$ac_default_prefix"
+  else
+    acl_final_prefix="$prefix"
+  fi
+  if test "X$exec_prefix" = "XNONE"; then
+    acl_final_exec_prefix='${prefix}'
+  else
+    acl_final_exec_prefix="$exec_prefix"
+  fi
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
+  prefix="$acl_save_prefix"
+])
+
+dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
+dnl variables prefix and exec_prefix bound to the values they will have
+dnl at the end of the configure script.
+AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
+[
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  $1
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+])
+
+dnl AC_LIB_PREPARE_MULTILIB creates
+dnl - a function acl_is_expected_elfclass, that tests whether standard input
+dn;   has a 32-bit or 64-bit ELF header, depending on the host CPU ABI,
+dnl - 3 variables acl_libdirstem, acl_libdirstem2, acl_libdirstem3, containing
+dnl   the basename of the libdir to try in turn, either "lib" or "lib64" or
+dnl   "lib/64" or "lib32" or "lib/sparcv9" or "lib/amd64" or similar.
+AC_DEFUN([AC_LIB_PREPARE_MULTILIB],
+[
+  dnl There is no formal standard regarding lib, lib32, and lib64.
+  dnl On most glibc systems, the current practice is that on a system supporting
+  dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under
+  dnl $prefix/lib64 and 32-bit libraries go under $prefix/lib. However, on
+  dnl Arch Linux based distributions, it's the opposite: 32-bit libraries go
+  dnl under $prefix/lib32 and 64-bit libraries go under $prefix/lib.
+  dnl We determine the compiler's default mode by looking at the compiler's
+  dnl library search path. If at least one of its elements ends in /lib64 or
+  dnl points to a directory whose absolute pathname ends in /lib64, we use that
+  dnl for 64-bit ABIs. Similarly for 32-bit ABIs. Otherwise we use the default,
+  dnl namely "lib".
+  dnl On Solaris systems, the current practice is that on a system supporting
+  dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under
+  dnl $prefix/lib/64 (which is a symlink to either $prefix/lib/sparcv9 or
+  dnl $prefix/lib/amd64) and 32-bit libraries go under $prefix/lib.
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_HOST_CPU_C_ABI_32BIT])
+
+  AC_CACHE_CHECK([for ELF binary format], [gl_cv_elf],
+    [AC_EGREP_CPP([Extensible Linking Format],
+       [#ifdef __ELF__
+        Extensible Linking Format
+        #endif
+       ],
+       [gl_cv_elf=yes],
+       [gl_cv_elf=no])
+    ])
+  if test $gl_cv_elf = yes; then
+    # Extract the ELF class of a file (5th byte) in decimal.
+    # Cf. https://en.wikipedia.org/wiki/Executable_and_Linkable_Format#File_header
+    if od -A x < /dev/null >/dev/null 2>/dev/null; then
+      # Use POSIX od.
+      func_elfclass ()
+      {
+        od -A n -t d1 -j 4 -N 1
+      }
+    else
+      # Use BSD hexdump.
+      func_elfclass ()
+      {
+        dd bs=1 count=1 skip=4 2>/dev/null | hexdump -e '1/1 "%3d "'
+        echo
+      }
+    fi
+    # Use 'expr', not 'test', to compare the values of func_elfclass, because on
+    # Solaris 11 OpenIndiana and Solaris 11 OmniOS, the result is 001 or 002,
+    # not 1 or 2.
+changequote(,)dnl
+    case $HOST_CPU_C_ABI_32BIT in
+      yes)
+        # 32-bit ABI.
+        acl_is_expected_elfclass ()
+        {
+          expr "`func_elfclass | sed -e 's/[ 	]//g'`" = 1 > /dev/null
+        }
+        ;;
+      no)
+        # 64-bit ABI.
+        acl_is_expected_elfclass ()
+        {
+          expr "`func_elfclass | sed -e 's/[ 	]//g'`" = 2 > /dev/null
+        }
+        ;;
+      *)
+        # Unknown.
+        acl_is_expected_elfclass ()
+        {
+          :
+        }
+        ;;
+    esac
+changequote([,])dnl
+  else
+    acl_is_expected_elfclass ()
+    {
+      :
+    }
+  fi
+
+  dnl Allow the user to override the result by setting acl_cv_libdirstems.
+  AC_CACHE_CHECK([for the common suffixes of directories in the library search path],
+    [acl_cv_libdirstems],
+    [dnl Try 'lib' first, because that's the default for libdir in GNU, see
+     dnl <https://www.gnu.org/prep/standards/html_node/Directory-Variables.html>.
+     acl_libdirstem=lib
+     acl_libdirstem2=
+     acl_libdirstem3=
+     case "$host_os" in
+       solaris*)
+         dnl See Solaris 10 Software Developer Collection > Solaris 64-bit Developer's Guide > The Development Environment
+         dnl <https://docs.oracle.com/cd/E19253-01/816-5138/dev-env/index.html>.
+         dnl "Portable Makefiles should refer to any library directories using the 64 symbolic link."
+         dnl But we want to recognize the sparcv9 or amd64 subdirectory also if the
+         dnl symlink is missing, so we set acl_libdirstem2 too.
+         if test $HOST_CPU_C_ABI_32BIT = no; then
+           acl_libdirstem2=lib/64
+           case "$host_cpu" in
+             sparc*)        acl_libdirstem3=lib/sparcv9 ;;
+             i*86 | x86_64) acl_libdirstem3=lib/amd64 ;;
+           esac
+         fi
+         ;;
+       *)
+         dnl If $CC generates code for a 32-bit ABI, the libraries are
+         dnl surely under $prefix/lib or $prefix/lib32, not $prefix/lib64.
+         dnl Similarly, if $CC generates code for a 64-bit ABI, the libraries
+         dnl are surely under $prefix/lib or $prefix/lib64, not $prefix/lib32.
+         dnl Find the compiler's search path. However, non-system compilers
+         dnl sometimes have odd library search paths. But we can't simply invoke
+         dnl '/usr/bin/gcc -print-search-dirs' because that would not take into
+         dnl account the -m32/-m31 or -m64 options from the $CC or $CFLAGS.
+         searchpath=`(LC_ALL=C $CC $CPPFLAGS $CFLAGS -print-search-dirs) 2>/dev/null \
+                     | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'`
+         if test $HOST_CPU_C_ABI_32BIT != no; then
+           # 32-bit or unknown ABI.
+           if test -d /usr/lib32; then
+             acl_libdirstem2=lib32
+           fi
+         fi
+         if test $HOST_CPU_C_ABI_32BIT != yes; then
+           # 64-bit or unknown ABI.
+           if test -d /usr/lib64; then
+             acl_libdirstem3=lib64
+           fi
+         fi
+         if test -n "$searchpath"; then
+           acl_save_IFS="${IFS= 	}"; IFS=":"
+           for searchdir in $searchpath; do
+             if test -d "$searchdir"; then
+               case "$searchdir" in
+                 */lib32/ | */lib32 ) acl_libdirstem2=lib32 ;;
+                 */lib64/ | */lib64 ) acl_libdirstem3=lib64 ;;
+                 */../ | */.. )
+                   # Better ignore directories of this form. They are misleading.
+                   ;;
+                 *) searchdir=`cd "$searchdir" && pwd`
+                    case "$searchdir" in
+                      */lib32 ) acl_libdirstem2=lib32 ;;
+                      */lib64 ) acl_libdirstem3=lib64 ;;
+                    esac ;;
+               esac
+             fi
+           done
+           IFS="$acl_save_IFS"
+           if test $HOST_CPU_C_ABI_32BIT = yes; then
+             # 32-bit ABI.
+             acl_libdirstem3=
+           fi
+           if test $HOST_CPU_C_ABI_32BIT = no; then
+             # 64-bit ABI.
+             acl_libdirstem2=
+           fi
+         fi
+         ;;
+     esac
+     test -n "$acl_libdirstem2" || acl_libdirstem2="$acl_libdirstem"
+     test -n "$acl_libdirstem3" || acl_libdirstem3="$acl_libdirstem"
+     acl_cv_libdirstems="$acl_libdirstem,$acl_libdirstem2,$acl_libdirstem3"
+    ])
+  dnl Decompose acl_cv_libdirstems into acl_libdirstem, acl_libdirstem2, and
+  dnl acl_libdirstem3.
+changequote(,)dnl
+  acl_libdirstem=`echo "$acl_cv_libdirstems" | sed -e 's/,.*//'`
+  acl_libdirstem2=`echo "$acl_cv_libdirstems" | sed -e 's/^[^,]*,//' -e 's/,.*//'`
+  acl_libdirstem3=`echo "$acl_cv_libdirstems" | sed -e 's/^[^,]*,[^,]*,//' -e 's/,.*//'`
+changequote([,])dnl
+])
diff --git a/src/grep/m4/libsigsegv.m4 b/src/grep/m4/libsigsegv.m4
new file mode 100644
index 0000000..3255235
--- /dev/null
+++ b/src/grep/m4/libsigsegv.m4
@@ -0,0 +1,16 @@
+# libsigsegv.m4 serial 4
+dnl Copyright (C) 2002-2003, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible, Sam Steingold.
+
+AC_DEFUN([gl_LIBSIGSEGV],
+[
+  AC_LIB_HAVE_LINKFLAGS([sigsegv], [],
+    [#include <sigsegv.h>], [sigsegv_deinstall_handler();],
+    [no, consider installing GNU libsigsegv])
+  dnl Some other autoconf macros and clisp's configure use this variable.
+  gl_cv_lib_sigsegv="$ac_cv_libsigsegv"
+])
diff --git a/src/grep/m4/libunistring-base.m4 b/src/grep/m4/libunistring-base.m4
new file mode 100644
index 0000000..657bc0d
--- /dev/null
+++ b/src/grep/m4/libunistring-base.m4
@@ -0,0 +1,141 @@
+# libunistring-base.m4 serial 5
+dnl Copyright (C) 2010-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paolo Bonzini and Bruno Haible.
+
+dnl gl_LIBUNISTRING_MODULE([VERSION], [Module])
+dnl Declares that the source files of Module should be compiled, unless we
+dnl are linking with libunistring and its version is >= the given VERSION.
+dnl Defines an automake conditional LIBUNISTRING_COMPILE_$MODULE that is
+dnl true if the source files of Module should be compiled.
+dnl This macro is to be used for public libunistring API, not for
+dnl undocumented API.
+dnl
+dnl You have to bump the VERSION argument to the next projected version
+dnl number each time you make a change that affects the behaviour of the
+dnl functions defined in Module (even if the sources of Module itself do not
+dnl change).
+
+AC_DEFUN([gl_LIBUNISTRING_MODULE],
+[
+  AC_REQUIRE([gl_LIBUNISTRING_LIB_PREPARE])
+  dnl Use the variables HAVE_LIBUNISTRING, LIBUNISTRING_VERSION from
+  dnl gl_LIBUNISTRING_CORE if that macro has been run.
+  AM_CONDITIONAL(AS_TR_CPP([LIBUNISTRING_COMPILE_$2]),
+    [gl_LIBUNISTRING_VERSION_CMP([$1])])
+])
+
+dnl gl_LIBUNISTRING_LIBHEADER([VERSION], [HeaderFile])
+dnl Declares that HeaderFile should be created, unless we are linking
+dnl with libunistring and its version is >= the given VERSION.
+dnl HeaderFile should be relative to the lib directory and end in '.h'.
+dnl Prepares for substituting LIBUNISTRING_HEADERFILE (to HeaderFile or empty).
+dnl
+dnl When we are linking with the already installed libunistring and its version
+dnl is < VERSION, we create HeaderFile here, because we may compile functions
+dnl (via gl_LIBUNISTRING_MODULE above) that are not contained in the installed
+dnl version.
+dnl When we are linking with the already installed libunistring and its version
+dnl is > VERSION, we don't create HeaderFile here: it could cause compilation
+dnl errors in other libunistring header files if some types are missing.
+dnl
+dnl You have to bump the VERSION argument to the next projected version
+dnl number each time you make a non-comment change to the HeaderFile.
+
+AC_DEFUN([gl_LIBUNISTRING_LIBHEADER],
+[
+  AC_REQUIRE([gl_LIBUNISTRING_LIB_PREPARE])
+  dnl Use the variables HAVE_LIBUNISTRING, LIBUNISTRING_VERSION from
+  dnl gl_LIBUNISTRING_CORE if that macro has been run.
+  if gl_LIBUNISTRING_VERSION_CMP([$1]); then
+    LIBUNISTRING_[]AS_TR_CPP([$2])='$2'
+  else
+    LIBUNISTRING_[]AS_TR_CPP([$2])=
+  fi
+  AC_SUBST([LIBUNISTRING_]AS_TR_CPP([$2]))
+])
+
+dnl Miscellaneous preparations/initializations.
+
+AC_DEFUN([gl_LIBUNISTRING_LIB_PREPARE],
+[
+  dnl Ensure that HAVE_LIBUNISTRING is fully determined at this point.
+  m4_ifdef([gl_LIBUNISTRING], [AC_REQUIRE([gl_LIBUNISTRING])])
+
+  AC_REQUIRE([AC_PROG_AWK])
+
+dnl Sed expressions to extract the parts of a version number.
+changequote(,)
+gl_libunistring_sed_extract_major='/^[0-9]/{s/^\([0-9]*\).*/\1/p;q;}
+i\
+0
+q
+'
+gl_libunistring_sed_extract_minor='/^[0-9][0-9]*[.][0-9]/{s/^[0-9]*[.]\([0-9]*\).*/\1/p;q;}
+i\
+0
+q
+'
+gl_libunistring_sed_extract_subminor='/^[0-9][0-9]*[.][0-9][0-9]*[.][0-9]/{s/^[0-9]*[.][0-9]*[.]\([0-9]*\).*/\1/p;q;}
+i\
+0
+q
+'
+changequote([,])
+
+  if test "$HAVE_LIBUNISTRING" = yes; then
+    LIBUNISTRING_VERSION_MAJOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_major"`
+    LIBUNISTRING_VERSION_MINOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_minor"`
+    LIBUNISTRING_VERSION_SUBMINOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_subminor"`
+  fi
+])
+
+dnl gl_LIBUNISTRING_VERSION_CMP([VERSION])
+dnl Expands to a shell statement that evaluates to true if LIBUNISTRING_VERSION
+dnl is less than the VERSION argument.
+AC_DEFUN([gl_LIBUNISTRING_VERSION_CMP],
+[ { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+         dnl AS_LITERAL_IF exists and works fine since autoconf-2.59 at least.
+         AS_LITERAL_IF([$1],
+           [dnl This is the optimized variant, that assumes the argument is a literal:
+            m4_pushdef([requested_version_major],
+              [gl_LIBUNISTRING_ARG_OR_ZERO(m4_bpatsubst([$1], [^\([0-9]*\).*], [\1]), [])])
+            m4_pushdef([requested_version_minor],
+              [gl_LIBUNISTRING_ARG_OR_ZERO(m4_bpatsubst([$1], [^[0-9]*[.]\([0-9]*\).*], [\1]), [$1])])
+            m4_pushdef([requested_version_subminor],
+              [gl_LIBUNISTRING_ARG_OR_ZERO(m4_bpatsubst([$1], [^[0-9]*[.][0-9]*[.]\([0-9]*\).*], [\1]), [$1])])
+            test $LIBUNISTRING_VERSION_MAJOR -lt requested_version_major \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq requested_version_major \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt requested_version_minor \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq requested_version_minor \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt requested_version_subminor
+                         }
+                    }
+               }
+            m4_popdef([requested_version_subminor])
+            m4_popdef([requested_version_minor])
+            m4_popdef([requested_version_major])
+           ],
+           [dnl This is the unoptimized variant:
+            requested_version_major=`echo '$1' | sed -n -e "$gl_libunistring_sed_extract_major"`
+            requested_version_minor=`echo '$1' | sed -n -e "$gl_libunistring_sed_extract_minor"`
+            requested_version_subminor=`echo '$1' | sed -n -e "$gl_libunistring_sed_extract_subminor"`
+            test $LIBUNISTRING_VERSION_MAJOR -lt $requested_version_major \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq $requested_version_major \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt $requested_version_minor \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq $requested_version_minor \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt $requested_version_subminor
+                         }
+                    }
+               }
+           ])
+       }
+  }])
+
+dnl gl_LIBUNISTRING_ARG_OR_ZERO([ARG], [ORIG]) expands to ARG if it is not the
+dnl same as ORIG, otherwise to 0.
+m4_define([gl_LIBUNISTRING_ARG_OR_ZERO], [m4_if([$1], [$2], [0], [$1])])
diff --git a/src/grep/m4/limits-h.m4 b/src/grep/m4/limits-h.m4
new file mode 100644
index 0000000..00c9fe9
--- /dev/null
+++ b/src/grep/m4/limits-h.m4
@@ -0,0 +1,44 @@
+dnl Check whether limits.h has needed features.
+
+dnl Copyright 2016-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert.
+
+AC_DEFUN_ONCE([gl_LIMITS_H],
+[
+  gl_CHECK_NEXT_HEADERS([limits.h])
+
+  AC_CACHE_CHECK([whether limits.h has WORD_BIT, BOOL_WIDTH etc.],
+    [gl_cv_header_limits_width],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+             #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
+            #endif
+            #include <limits.h>
+            long long llm = LLONG_MAX;
+            int wb = WORD_BIT;
+            int ullw = ULLONG_WIDTH;
+            int bw = BOOL_WIDTH;
+          ]])],
+       [gl_cv_header_limits_width=yes],
+       [gl_cv_header_limits_width=no])])
+  if test "$gl_cv_header_limits_width" = yes; then
+    LIMITS_H=
+  else
+    LIMITS_H=limits.h
+  fi
+  AC_SUBST([LIMITS_H])
+  AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"])
+])
+
+dnl Unconditionally enables the replacement of <limits.h>.
+AC_DEFUN([gl_REPLACE_LIMITS_H],
+[
+  AC_REQUIRE([gl_LIMITS_H])
+  LIMITS_H='limits.h'
+  AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"])
+])
diff --git a/src/grep/m4/localcharset.m4 b/src/grep/m4/localcharset.m4
new file mode 100644
index 0000000..04389fc
--- /dev/null
+++ b/src/grep/m4/localcharset.m4
@@ -0,0 +1,11 @@
+# localcharset.m4 serial 8
+dnl Copyright (C) 2002, 2004, 2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_LOCALCHARSET],
+[
+  dnl Prerequisites of lib/localcharset.c.
+  AC_REQUIRE([AM_LANGINFO_CODESET])
+])
diff --git a/src/grep/m4/locale-fr.m4 b/src/grep/m4/locale-fr.m4
new file mode 100644
index 0000000..b61df7e
--- /dev/null
+++ b/src/grep/m4/locale-fr.m4
@@ -0,0 +1,253 @@
+# locale-fr.m4 serial 20
+dnl Copyright (C) 2003, 2005-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl Determine the name of a french locale with traditional encoding.
+AC_DEFUN([gt_LOCALE_FR],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([AM_LANGINFO_CODESET])
+  AC_CACHE_CHECK([for a traditional french locale], [gt_cv_locale_fr], [
+    AC_LANG_CONFTEST([AC_LANG_SOURCE([[
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is only
+     one byte long. This excludes the UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 3 || buf[2] != 'v') return 1;
+# if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+# endif
+  return 0;
+#endif
+}
+      ]])])
+    if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the native Windows locale name.
+          if (LC_ALL=French_France.1252 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=French_France.1252
+          else
+            # None found.
+            gt_cv_locale_fr=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr=fr_FR.ISO-8859-1
+            else
+              # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name.
+              if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr=fr_FR.ISO8859-1
+              else
+                # Test for the HP-UX locale name.
+                if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_fr=fr_FR.iso88591
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_fr=fr
+                  else
+                    # None found.
+                    gt_cv_locale_fr=none
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+  ])
+  LOCALE_FR=$gt_cv_locale_fr
+  AC_SUBST([LOCALE_FR])
+])
+
+dnl Determine the name of a french locale with UTF-8 encoding.
+AC_DEFUN([gt_LOCALE_FR_UTF8],
+[
+  AC_REQUIRE([AM_LANGINFO_CODESET])
+  AC_CACHE_CHECK([for a french Unicode locale], [gt_cv_locale_fr_utf8], [
+    AC_LANG_CONFTEST([AC_LANG_SOURCE([[
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if !(defined __BEOS__ || defined __HAIKU__)
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in the abbreviation of the second month, the second
+     character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v')
+    return 1;
+#endif
+#if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy.  */
+  /* Check whether the decimal separator is a comma.
+     On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point
+     are nl_langinfo(RADIXCHAR) are both ".".  */
+  if (localeconv () ->decimal_point[0] != ',') return 1;
+#endif
+  return 0;
+}
+      ]])])
+    if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=French_France.65001
+          else
+            # None found.
+            gt_cv_locale_fr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_fr_utf8=fr_FR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_fr_utf8=fr_FR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr_utf8=fr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_fr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+  ])
+  LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
+  AC_SUBST([LOCALE_FR_UTF8])
+])
diff --git a/src/grep/m4/locale-ja.m4 b/src/grep/m4/locale-ja.m4
new file mode 100644
index 0000000..cd94288
--- /dev/null
+++ b/src/grep/m4/locale-ja.m4
@@ -0,0 +1,143 @@
+# locale-ja.m4 serial 15
+dnl Copyright (C) 2003, 2005-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl Determine the name of a japanese locale with EUC-JP encoding.
+AC_DEFUN([gt_LOCALE_JA],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([AM_LANGINFO_CODESET])
+  AC_CACHE_CHECK([for a traditional japanese locale], [gt_cv_locale_ja], [
+    AC_LANG_CONFTEST([AC_LANG_SOURCE([[
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
+     on Cygwin 1.5.x.  */
+  if (MB_CUR_MAX == 1)
+    return 1;
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  return 0;
+#endif
+}
+      ]])])
+    if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Note that on native Windows, the Japanese locale is
+          # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
+          # cannot use it here.
+          gt_cv_locale_ja=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the AIX locale name.
+          if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_ja=ja_JP
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_ja=ja_JP.EUC-JP
+            else
+              # Test for the HP-UX, OSF/1, NetBSD locale name.
+              if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_ja=ja_JP.eucJP
+              else
+                # Test for the IRIX, FreeBSD locale name.
+                if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                  gt_cv_locale_ja=ja_JP.EUC
+                else
+                  # Test for the Solaris 7 locale name.
+                  if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                    gt_cv_locale_ja=ja
+                  else
+                    # Special test for NetBSD 1.6.
+                    if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
+                      gt_cv_locale_ja=ja_JP.eucJP
+                    else
+                      # None found.
+                      gt_cv_locale_ja=none
+                    fi
+                  fi
+                fi
+              fi
+            fi
+          fi
+          ;;
+      esac
+    fi
+    rm -fr conftest*
+  ])
+  LOCALE_JA=$gt_cv_locale_ja
+  AC_SUBST([LOCALE_JA])
+])
diff --git a/src/grep/m4/locale-tr.m4 b/src/grep/m4/locale-tr.m4
new file mode 100644
index 0000000..ecb8b60
--- /dev/null
+++ b/src/grep/m4/locale-tr.m4
@@ -0,0 +1,126 @@
+# locale-tr.m4 serial 13
+dnl Copyright (C) 2003, 2005-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl Determine the name of a turkish locale with UTF-8 encoding.
+AC_DEFUN([gt_LOCALE_TR_UTF8],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([AM_LANGINFO_CODESET])
+  AC_CACHE_CHECK([for a turkish Unicode locale], [gt_cv_locale_tr_utf8], [
+    AC_LANG_CONFTEST([AC_LANG_SOURCE([[
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <wctype.h>
+struct tm t;
+char buf[16];
+int main () {
+  /* On BeOS, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  But BeOS does not
+     implement the Turkish upper-/lowercase mappings.  Therefore, let this
+     program return 1 on BeOS.  */
+  /* Check whether the given locale name is recognized by the system.  */
+#if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+#else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+#endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the tr_TR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.  */
+#if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
+      return 1;
+  }
+#endif
+#ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+#endif
+  /* Check whether in the abbreviation of the eighth month, the second
+     character (should be U+011F: LATIN SMALL LETTER G WITH BREVE) is
+     two bytes long, with UTF-8 encoding.  */
+  t.tm_year = 1992 - 1900; t.tm_mon = 8 - 1; t.tm_mday = 19;
+  if (strftime (buf, sizeof (buf), "%b", &t) < 4
+      || buf[1] != (char) 0xc4 || buf[2] != (char) 0x9f)
+    return 1;
+  /* Check whether the upper-/lowercase mappings are as expected for
+     Turkish.  */
+  if (towupper ('i') != 0x0130 || towlower (0x0130) != 'i'
+      || towupper(0x0131) != 'I' || towlower ('I') != 0x0131)
+    return 1;
+  return 0;
+}
+      ]])])
+    if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=Turkish_Turkey.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_tr_utf8=Turkish_Turkey.65001
+          else
+            # None found.
+            gt_cv_locale_tr_utf8=none
+          fi
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the usual locale name.
+          if (LC_ALL=tr_TR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_tr_utf8=tr_TR
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=tr_TR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_tr_utf8=tr_TR.UTF-8
+            else
+              # Test for the Solaris 7 locale name.
+              if (LC_ALL=tr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_tr_utf8=tr.UTF-8
+              else
+                # None found.
+                gt_cv_locale_tr_utf8=none
+              fi
+            fi
+          fi
+          ;;
+      esac
+    else
+      gt_cv_locale_tr_utf8=none
+    fi
+    rm -fr conftest*
+  ])
+  LOCALE_TR_UTF8=$gt_cv_locale_tr_utf8
+  AC_SUBST([LOCALE_TR_UTF8])
+])
diff --git a/src/grep/m4/locale-zh.m4 b/src/grep/m4/locale-zh.m4
new file mode 100644
index 0000000..1228be8
--- /dev/null
+++ b/src/grep/m4/locale-zh.m4
@@ -0,0 +1,137 @@
+# locale-zh.m4 serial 15
+dnl Copyright (C) 2003, 2005-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl Determine the name of a chinese locale with GB18030 encoding.
+AC_DEFUN([gt_LOCALE_ZH_CN],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([AM_LANGINFO_CODESET])
+  AC_CACHE_CHECK([for a transitional chinese locale], [gt_cv_locale_zh_CN], [
+    AC_LANG_CONFTEST([AC_LANG_SOURCE([[
+#include <locale.h>
+#include <stdlib.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
+     imitates locale dependent behaviour by looking at the environment
+     variables, and all locales use the UTF-8 encoding.  */
+#if defined __BEOS__ || defined __HAIKU__
+  return 1;
+#else
+  /* Check whether the given locale name is recognized by the system.  */
+# if defined _WIN32 && !defined __CYGWIN__
+  /* On native Windows, setlocale(category, "") looks at the system settings,
+     not at the environment variables.  Also, when an encoding suffix such
+     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+     category of the locale to "C".  */
+  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+    return 1;
+# else
+  if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+     some unit tests fail.
+     On MirBSD 10, when an unsupported locale is specified, setlocale()
+     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
+# if HAVE_LANGINFO_CODESET
+  {
+    const char *cs = nl_langinfo (CODESET);
+    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+        || strcmp (cs, "UTF-8") == 0)
+      return 1;
+  }
+# endif
+# ifdef __CYGWIN__
+  /* On Cygwin, avoid locale names without encoding suffix, because the
+     locale_charset() function relies on the encoding suffix.  Note that
+     LC_ALL is set on the command line.  */
+  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+     This excludes the UTF-8 encoding (except on MirBSD).  */
+  {
+    const char *p;
+    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+    for (p = buf; *p != '\0'; p++)
+      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+        return 1;
+  }
+  /* Check whether a typical GB18030 multibyte sequence is recognized as a
+     single wide character.  This excludes the GB2312 and GBK encodings.  */
+  if (mblen ("\203\062\332\066", 5) != 4)
+    return 1;
+  return 0;
+#endif
+}
+      ]])])
+    if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
+      case "$host_os" in
+        # Handle native Windows specially, because there setlocale() interprets
+        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+        # "fr" or "fra" as "French" or "French_France.1252",
+        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+        # "ja" as "Japanese" or "Japanese_Japan.932",
+        # and similar.
+        mingw*)
+          # Test for the hypothetical native Windows locale name.
+          if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=Chinese_China.54936
+          else
+            # None found.
+            gt_cv_locale_zh_CN=none
+          fi
+          ;;
+        solaris2.8)
+          # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
+          # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
+          # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
+          gt_cv_locale_zh_CN=none
+          ;;
+        *)
+          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+          # configure script would override the LC_ALL setting. Likewise for
+          # LC_CTYPE, which is also set at the beginning of the configure script.
+          # Test for the locale name without encoding suffix.
+          if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            gt_cv_locale_zh_CN=zh_CN
+          else
+            # Test for the locale name with explicit encoding suffix.
+            if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              gt_cv_locale_zh_CN=zh_CN.GB18030
+            else
+              # None found.
+              gt_cv_locale_zh_CN=none
+            fi
+          fi
+          ;;
+      esac
+    else
+      # If there was a link error, due to mblen(), the system is so old that
+      # it certainly doesn't have a chinese locale.
+      gt_cv_locale_zh_CN=none
+    fi
+    rm -fr conftest*
+  ])
+  LOCALE_ZH_CN=$gt_cv_locale_zh_CN
+  AC_SUBST([LOCALE_ZH_CN])
+])
diff --git a/src/grep/m4/locale_h.m4 b/src/grep/m4/locale_h.m4
new file mode 100644
index 0000000..444a381
--- /dev/null
+++ b/src/grep/m4/locale_h.m4
@@ -0,0 +1,174 @@
+# locale_h.m4 serial 28
+dnl Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_LOCALE_H],
+[
+  dnl Ensure to expand the default settings once only, before all statements
+  dnl that occur in other macros.
+  AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
+
+  dnl Persuade glibc <locale.h> to define locale_t and the int_p_*, int_n_*
+  dnl members of 'struct lconv'.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  dnl If <stddef.h> is replaced, then <locale.h> must also be replaced.
+  AC_REQUIRE([gl_STDDEF_H])
+
+  AC_REQUIRE([gl_LOCALE_T])
+
+  dnl Solaris 11.0 defines the int_p_*, int_n_* members of 'struct lconv'
+  dnl only if _LCONV_C99 is defined.
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    solaris*)
+      AC_DEFINE([_LCONV_C99], [1], [Define to 1 on Solaris.])
+      ;;
+  esac
+
+  AC_CACHE_CHECK([whether locale.h conforms to POSIX:2001],
+    [gl_cv_header_locale_h_posix2001],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <locale.h>
+            int x = LC_MESSAGES;
+            int y = sizeof (((struct lconv *) 0)->decimal_point);]],
+          [[]])],
+       [gl_cv_header_locale_h_posix2001=yes],
+       [gl_cv_header_locale_h_posix2001=no])])
+
+  dnl Check whether 'struct lconv' is complete.
+  dnl Bionic libc's 'struct lconv' is just a dummy.
+  dnl On OpenBSD 4.9, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 9, Cygwin 1.5.x,
+  dnl mingw, MSVC 9, it lacks the int_p_* and int_n_* members.
+  AC_CACHE_CHECK([whether struct lconv is properly defined],
+    [gl_cv_sys_struct_lconv_ok],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <locale.h>
+            struct lconv l;
+            int x = sizeof (l.decimal_point);
+            int y = sizeof (l.int_p_cs_precedes);]],
+          [[]])],
+       [gl_cv_sys_struct_lconv_ok=yes],
+       [gl_cv_sys_struct_lconv_ok=no])
+    ])
+  if test $gl_cv_sys_struct_lconv_ok = no; then
+    dnl On native Windows with MSVC, merely define these member names as macros.
+    dnl This avoids trouble in C++ mode.
+    case "$host_os" in
+      mingw*)
+        AC_EGREP_CPP([Special], [
+#ifdef _MSC_VER
+ Special
+#endif
+          ],
+          [],
+          [REPLACE_STRUCT_LCONV=1])
+        ;;
+      *) REPLACE_STRUCT_LCONV=1 ;;
+    esac
+  fi
+
+  dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_NEXT_HEADERS([locale.h])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <locale.h>
+/* Some systems provide declarations in a non-standard header.  */
+#if HAVE_XLOCALE_H
+# include <xlocale.h>
+#endif
+    ]],
+    [setlocale newlocale duplocale freelocale])
+])
+
+dnl Checks to determine whether the system has the locale_t type,
+dnl and how to obtain it.
+AC_DEFUN([gl_LOCALE_T],
+[
+  dnl Persuade glibc and Solaris <locale.h> to define locale_t.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  dnl Check whether use of locale_t requires inclusion of <xlocale.h>,
+  dnl e.g. on Mac OS X 10.5. If <locale.h> does not define locale_t by
+  dnl itself, we assume that <xlocale.h> will do so.
+  AC_CACHE_CHECK([whether locale.h defines locale_t],
+    [gl_cv_header_locale_has_locale_t],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <locale.h>
+            locale_t x;]],
+          [[]])],
+       [gl_cv_header_locale_has_locale_t=yes],
+       [gl_cv_header_locale_has_locale_t=no])
+    ])
+
+  dnl Check for <xlocale.h>.
+  AC_CHECK_HEADERS_ONCE([xlocale.h])
+  if test $ac_cv_header_xlocale_h = yes; then
+    HAVE_XLOCALE_H=1
+    if test $gl_cv_header_locale_has_locale_t = yes; then
+      gl_cv_header_locale_h_needs_xlocale_h=no
+    else
+      gl_cv_header_locale_h_needs_xlocale_h=yes
+    fi
+    HAVE_LOCALE_T=1
+  else
+    HAVE_XLOCALE_H=0
+    gl_cv_header_locale_h_needs_xlocale_h=no
+    if test $gl_cv_header_locale_has_locale_t = yes; then
+      HAVE_LOCALE_T=1
+    else
+      HAVE_LOCALE_T=0
+    fi
+  fi
+  AC_SUBST([HAVE_XLOCALE_H])
+])
+
+# gl_LOCALE_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_LOCALE_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_LOCALE_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_LOCALE_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOCALECONV])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETLOCALE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETLOCALE_NULL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUPLOCALE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOCALENAME])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_LOCALE_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_LOCALE_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_NEWLOCALE=1;       AC_SUBST([HAVE_NEWLOCALE])
+  HAVE_DUPLOCALE=1;       AC_SUBST([HAVE_DUPLOCALE])
+  HAVE_FREELOCALE=1;      AC_SUBST([HAVE_FREELOCALE])
+  REPLACE_LOCALECONV=0;   AC_SUBST([REPLACE_LOCALECONV])
+  REPLACE_SETLOCALE=0;    AC_SUBST([REPLACE_SETLOCALE])
+  REPLACE_NEWLOCALE=0;    AC_SUBST([REPLACE_NEWLOCALE])
+  REPLACE_DUPLOCALE=0;    AC_SUBST([REPLACE_DUPLOCALE])
+  REPLACE_FREELOCALE=0;   AC_SUBST([REPLACE_FREELOCALE])
+  REPLACE_STRUCT_LCONV=0; AC_SUBST([REPLACE_STRUCT_LCONV])
+  LOCALENAME_ENHANCE_LOCALE_FUNCS=0; AC_SUBST([LOCALENAME_ENHANCE_LOCALE_FUNCS])
+])
diff --git a/src/grep/m4/localeconv.m4 b/src/grep/m4/localeconv.m4
new file mode 100644
index 0000000..e29c7c3
--- /dev/null
+++ b/src/grep/m4/localeconv.m4
@@ -0,0 +1,22 @@
+# localeconv.m4 serial 1
+dnl Copyright (C) 2012-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_LOCALECONV],
+[
+  AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
+  AC_REQUIRE([gl_LOCALE_H])
+
+  if test $REPLACE_STRUCT_LCONV = 1; then
+    REPLACE_LOCALECONV=1
+  fi
+])
+
+# Prerequisites of lib/localeconv.c.
+AC_DEFUN([gl_PREREQ_LOCALECONV],
+[
+  AC_CHECK_MEMBERS([struct lconv.decimal_point], [], [],
+    [[#include <locale.h>]])
+])
diff --git a/src/grep/m4/localename.m4 b/src/grep/m4/localename.m4
new file mode 100644
index 0000000..2bff33d
--- /dev/null
+++ b/src/grep/m4/localename.m4
@@ -0,0 +1,41 @@
+# localename.m4 serial 8
+dnl Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_LOCALENAME],
+[
+  AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
+  AC_REQUIRE([gl_LOCALE_T])
+  AC_REQUIRE([gt_LC_MESSAGES])
+  AC_REQUIRE([gt_INTL_THREAD_LOCALE_NAME])
+  AC_REQUIRE([gt_INTL_MACOSX])
+  AC_CHECK_HEADERS_ONCE([langinfo.h])
+  if test $HAVE_LOCALE_T = 1; then
+    AC_CHECK_FUNCS_ONCE([newlocale duplocale freelocale])
+    gl_func_newlocale="$ac_cv_func_newlocale"
+    gl_func_duplocale="$ac_cv_func_duplocale"
+    gl_func_freelocale="$ac_cv_func_freelocale"
+  else
+    dnl In 2019, some versions of z/OS lack the locale_t type and have broken
+    dnl newlocale, duplocale, freelocale functions.
+    gl_func_newlocale=no
+    gl_func_duplocale=no
+    gl_func_freelocale=no
+  fi
+  if test $gl_func_newlocale != yes; then
+    HAVE_NEWLOCALE=0
+  fi
+  if test $gl_func_duplocale != yes; then
+    HAVE_DUPLOCALE=0
+  fi
+  if test $gl_func_freelocale != yes; then
+    HAVE_FREELOCALE=0
+  fi
+  if test $gt_localename_enhances_locale_funcs = yes; then
+    REPLACE_NEWLOCALE=1
+    REPLACE_DUPLOCALE=1
+    REPLACE_FREELOCALE=1
+  fi
+])
diff --git a/src/grep/m4/lock.m4 b/src/grep/m4/lock.m4
new file mode 100644
index 0000000..d68c12d
--- /dev/null
+++ b/src/grep/m4/lock.m4
@@ -0,0 +1,47 @@
+# lock.m4 serial 14
+dnl Copyright (C) 2005-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([gl_LOCK],
+[
+  AC_REQUIRE([gl_THREADLIB])
+  if test "$gl_threads_api" = posix; then
+    # OSF/1 4.0 and Mac OS X 10.1 lack the pthread_rwlock_t type and the
+    # pthread_rwlock_* functions.
+    has_rwlock=false
+    AC_CHECK_TYPE([pthread_rwlock_t],
+      [has_rwlock=true
+       AC_DEFINE([HAVE_PTHREAD_RWLOCK], [1],
+         [Define if the POSIX multithreading library has read/write locks.])],
+      [],
+      [#include <pthread.h>])
+    if $has_rwlock; then
+      gl_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER
+    fi
+    # glibc defines PTHREAD_MUTEX_RECURSIVE as enum, not as a macro.
+    AC_COMPILE_IFELSE([
+      AC_LANG_PROGRAM(
+        [[#include <pthread.h>]],
+        [[
+#if __FreeBSD__ == 4
+error "No, in FreeBSD 4.0 recursive mutexes actually don't work."
+#elif (defined __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ \
+       && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1070)
+error "No, in Mac OS X < 10.7 recursive mutexes actually don't work."
+#else
+int x = (int)PTHREAD_MUTEX_RECURSIVE;
+return !x;
+#endif
+        ]])],
+      [AC_DEFINE([HAVE_PTHREAD_MUTEX_RECURSIVE], [1],
+         [Define if the <pthread.h> defines PTHREAD_MUTEX_RECURSIVE.])])
+  fi
+  gl_PREREQ_LOCK
+])
+
+# Prerequisites of lib/glthread/lock.c.
+AC_DEFUN([gl_PREREQ_LOCK], [:])
diff --git a/src/grep/m4/lseek.m4 b/src/grep/m4/lseek.m4
new file mode 100644
index 0000000..0af6378
--- /dev/null
+++ b/src/grep/m4/lseek.m4
@@ -0,0 +1,72 @@
+# lseek.m4 serial 11
+dnl Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_LSEEK],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([AC_PROG_CC])
+  AC_CHECK_HEADERS_ONCE([unistd.h])
+  AC_CACHE_CHECK([whether lseek detects pipes], [gl_cv_func_lseek_pipe],
+    [case "$host_os" in
+       mingw*)
+         dnl Native Windows.
+         dnl The result of lseek (fd, (off_t)0, SEEK_CUR) or
+         dnl SetFilePointer(handle, 0, NULL, FILE_CURRENT)
+         dnl for a pipe depends on the environment: In a Cygwin 1.5
+         dnl environment it succeeds (wrong); in a Cygwin 1.7 environment
+         dnl it fails with a wrong errno value.
+         gl_cv_func_lseek_pipe=no
+         ;;
+       *)
+         if test $cross_compiling = no; then
+           AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+#include <sys/types.h> /* for off_t */
+#include <stdio.h> /* for SEEK_CUR */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#else /* on Windows with MSVC */
+# include <io.h>
+#endif
+]GL_MDA_DEFINES],
+[[
+  /* Exit with success only if stdin is seekable.  */
+  return lseek (0, (off_t)0, SEEK_CUR) < 0;
+]])],
+             [if test -s conftest$ac_exeext \
+                 && ./conftest$ac_exeext < conftest.$ac_ext \
+                 && test 1 = "`echo hi \
+                   | { ./conftest$ac_exeext; echo $?; cat >/dev/null; }`"; then
+                gl_cv_func_lseek_pipe=yes
+              else
+                gl_cv_func_lseek_pipe=no
+              fi
+             ],
+             [gl_cv_func_lseek_pipe=no])
+         else
+           AC_COMPILE_IFELSE(
+             [AC_LANG_SOURCE([[
+#if defined __BEOS__
+/* BeOS mistakenly return 0 when trying to seek on pipes.  */
+  Choke me.
+#endif]])],
+             [gl_cv_func_lseek_pipe=yes], [gl_cv_func_lseek_pipe=no])
+         fi
+         ;;
+     esac
+    ])
+  if test $gl_cv_func_lseek_pipe = no; then
+    REPLACE_LSEEK=1
+    AC_DEFINE([LSEEK_PIPE_BROKEN], [1],
+      [Define to 1 if lseek does not detect pipes.])
+  fi
+
+  AC_REQUIRE([gl_SYS_TYPES_H])
+  if test $WINDOWS_64_BIT_OFF_T = 1; then
+    REPLACE_LSEEK=1
+  fi
+])
diff --git a/src/grep/m4/lstat.m4 b/src/grep/m4/lstat.m4
new file mode 100644
index 0000000..62e9db2
--- /dev/null
+++ b/src/grep/m4/lstat.m4
@@ -0,0 +1,79 @@
+# serial 33
+
+# Copyright (C) 1997-2001, 2003-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl From Jim Meyering.
+
+AC_DEFUN([gl_FUNC_LSTAT],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+  dnl If lstat does not exist, the replacement <sys/stat.h> does
+  dnl "#define lstat stat", and lstat.c is a no-op.
+  AC_CHECK_FUNCS_ONCE([lstat])
+  if test $ac_cv_func_lstat = yes; then
+    AC_REQUIRE([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK])
+    case $host_os,$gl_cv_func_lstat_dereferences_slashed_symlink in
+      solaris* | *no)
+        REPLACE_LSTAT=1
+        ;;
+    esac
+  else
+    HAVE_LSTAT=0
+  fi
+])
+
+# Prerequisites of lib/lstat.c.
+AC_DEFUN([gl_PREREQ_LSTAT], [:])
+
+AC_DEFUN([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK],
+[
+  dnl We don't use AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK any more, because it
+  dnl is no longer maintained in Autoconf and because it invokes AC_LIBOBJ.
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether lstat correctly handles trailing slash],
+    [gl_cv_func_lstat_dereferences_slashed_symlink],
+    [rm -f conftest.sym conftest.file
+     echo >conftest.file
+     AC_RUN_IFELSE(
+       [AC_LANG_PROGRAM(
+          [AC_INCLUDES_DEFAULT],
+          [[struct stat sbuf;
+            if (symlink ("conftest.file", "conftest.sym") != 0)
+              return 1;
+            /* Linux will dereference the symlink and fail, as required by
+               POSIX.  That is better in the sense that it means we will not
+               have to compile and use the lstat wrapper.  */
+            return lstat ("conftest.sym/", &sbuf) == 0;
+          ]])],
+       [gl_cv_func_lstat_dereferences_slashed_symlink=yes],
+       [gl_cv_func_lstat_dereferences_slashed_symlink=no],
+       [case "$host_os" in
+          linux-* | linux)
+            # Guess yes on Linux systems.
+            gl_cv_func_lstat_dereferences_slashed_symlink="guessing yes" ;;
+          *-gnu* | gnu*)
+            # Guess yes on glibc systems.
+            gl_cv_func_lstat_dereferences_slashed_symlink="guessing yes" ;;
+          mingw*)
+            # Guess no on native Windows.
+            gl_cv_func_lstat_dereferences_slashed_symlink="guessing no" ;;
+          *)
+            # If we don't know, obey --enable-cross-guesses.
+            gl_cv_func_lstat_dereferences_slashed_symlink="$gl_cross_guess_normal" ;;
+        esac
+       ])
+     rm -f conftest.sym conftest.file
+    ])
+  case "$gl_cv_func_lstat_dereferences_slashed_symlink" in
+    *yes)
+      AC_DEFINE_UNQUOTED([LSTAT_FOLLOWS_SLASHED_SYMLINK], [1],
+        [Define to 1 if 'lstat' dereferences a symlink specified
+         with a trailing slash.])
+      ;;
+  esac
+])
diff --git a/src/grep/m4/malloc.m4 b/src/grep/m4/malloc.m4
new file mode 100644
index 0000000..972e808
--- /dev/null
+++ b/src/grep/m4/malloc.m4
@@ -0,0 +1,174 @@
+# malloc.m4 serial 27
+dnl Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# This is adapted with modifications from upstream Autoconf here:
+# https://git.savannah.gnu.org/cgit/autoconf.git/tree/lib/autoconf/functions.m4?id=v2.70#n949
+AC_DEFUN([_AC_FUNC_MALLOC_IF],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])dnl for cross-compiles
+  AC_CACHE_CHECK([whether malloc (0) returns nonnull],
+    [ac_cv_func_malloc_0_nonnull],
+    [AC_RUN_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <stdlib.h>
+          ]],
+          [[void *p = malloc (0);
+            int result = !p;
+            free (p);
+            return result;]])
+       ],
+       [ac_cv_func_malloc_0_nonnull=yes],
+       [ac_cv_func_malloc_0_nonnull=no],
+       [case "$host_os" in
+          # Guess yes on platforms where we know the result.
+          *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \
+          | gnu* | *-musl* | midnightbsd* \
+          | hpux* | solaris* | cygwin* | mingw* | msys* )
+            ac_cv_func_malloc_0_nonnull="guessing yes" ;;
+          # If we don't know, obey --enable-cross-guesses.
+          *) ac_cv_func_malloc_0_nonnull="$gl_cross_guess_normal" ;;
+        esac
+       ])
+    ])
+  AS_CASE([$ac_cv_func_malloc_0_nonnull], [*yes], [$1], [$2])
+])# _AC_FUNC_MALLOC_IF
+
+# gl_FUNC_MALLOC_GNU
+# ------------------
+# Replace malloc if it is not compatible with GNU libc.
+AC_DEFUN([gl_FUNC_MALLOC_GNU],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([gl_FUNC_MALLOC_POSIX])
+  if test $REPLACE_MALLOC = 0; then
+    _AC_FUNC_MALLOC_IF([], [REPLACE_MALLOC=1])
+  fi
+])
+
+# gl_FUNC_MALLOC_PTRDIFF
+# ----------------------
+# Test whether malloc (N) reliably fails when N exceeds PTRDIFF_MAX,
+# and replace malloc otherwise.
+AC_DEFUN([gl_FUNC_MALLOC_PTRDIFF],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([gl_CHECK_MALLOC_PTRDIFF])
+  test "$gl_cv_malloc_ptrdiff" = yes || REPLACE_MALLOC=1
+])
+
+# Test whether malloc, realloc, calloc refuse to create objects
+# larger than what can be expressed in ptrdiff_t.
+# Set gl_cv_func_malloc_gnu to yes or no accordingly.
+AC_DEFUN([gl_CHECK_MALLOC_PTRDIFF],
+[
+  AC_CACHE_CHECK([whether malloc is ptrdiff_t safe],
+    [gl_cv_malloc_ptrdiff],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <stdint.h>
+          ]],
+          [[/* 64-bit ptrdiff_t is so wide that no practical platform
+               can exceed it.  */
+            #define WIDE_PTRDIFF (PTRDIFF_MAX >> 31 >> 31 != 0)
+
+            /* On rare machines where size_t fits in ptrdiff_t there
+               is no problem.  */
+            #define NARROW_SIZE (SIZE_MAX <= PTRDIFF_MAX)
+
+            /* glibc 2.30 and later malloc refuses to exceed ptrdiff_t
+               bounds even on 32-bit platforms.  We don't know which
+               non-glibc systems are safe.  */
+            #define KNOWN_SAFE (2 < __GLIBC__ + (30 <= __GLIBC_MINOR__))
+
+            #if WIDE_PTRDIFF || NARROW_SIZE || KNOWN_SAFE
+              return 0;
+            #else
+              #error "malloc might not be ptrdiff_t safe"
+              syntax error
+            #endif
+          ]])],
+       [gl_cv_malloc_ptrdiff=yes],
+       [gl_cv_malloc_ptrdiff=no])
+    ])
+])
+
+# gl_FUNC_MALLOC_POSIX
+# --------------------
+# Test whether 'malloc' is POSIX compliant (sets errno to ENOMEM when it
+# fails, and doesn't mess up with ptrdiff_t overflow), and replace
+# malloc if it is not.
+AC_DEFUN([gl_FUNC_MALLOC_POSIX],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([gl_FUNC_MALLOC_PTRDIFF])
+  AC_REQUIRE([gl_CHECK_MALLOC_POSIX])
+  if test "$gl_cv_func_malloc_posix" = yes; then
+    AC_DEFINE([HAVE_MALLOC_POSIX], [1],
+      [Define if malloc, realloc, and calloc set errno on allocation failure.])
+  else
+    REPLACE_MALLOC=1
+  fi
+])
+
+# Test whether malloc, realloc, calloc set errno to ENOMEM on failure.
+# Set gl_cv_func_malloc_posix to yes or no accordingly.
+AC_DEFUN([gl_CHECK_MALLOC_POSIX],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CACHE_CHECK([whether malloc, realloc, calloc set errno on failure],
+    [gl_cv_func_malloc_posix],
+    [
+      dnl It is too dangerous to try to allocate a large amount of memory:
+      dnl some systems go to their knees when you do that. So assume that
+      dnl all Unix implementations of the function set errno on failure,
+      dnl except on those platforms where we have seen 'test-malloc-gnu',
+      dnl 'test-realloc-gnu', 'test-calloc-gnu' fail.
+      case "$host_os" in
+        mingw*)
+          gl_cv_func_malloc_posix=no ;;
+        irix* | solaris*)
+          dnl On IRIX 6.5, the three functions return NULL with errno unset
+          dnl when the argument is larger than PTRDIFF_MAX.
+          dnl On Solaris 11.3, the three functions return NULL with errno set
+          dnl to EAGAIN, not ENOMEM, when the argument is larger than
+          dnl PTRDIFF_MAX.
+          dnl Here is a test program:
+m4_divert_push([KILL])
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#define ptrdiff_t long
+#ifndef PTRDIFF_MAX
+# define PTRDIFF_MAX ((ptrdiff_t) ((1UL << (8 * sizeof (ptrdiff_t) - 1)) - 1))
+#endif
+
+int main ()
+{
+  void *p;
+
+  fprintf (stderr, "PTRDIFF_MAX = %lu\n", (unsigned long) PTRDIFF_MAX);
+
+  errno = 0;
+  p = malloc ((unsigned long) PTRDIFF_MAX + 1);
+  fprintf (stderr, "p=%p errno=%d\n", p, errno);
+
+  errno = 0;
+  p = calloc (PTRDIFF_MAX / 2 + 1, 2);
+  fprintf (stderr, "p=%p errno=%d\n", p, errno);
+
+  errno = 0;
+  p = realloc (NULL, (unsigned long) PTRDIFF_MAX + 1);
+  fprintf (stderr, "p=%p errno=%d\n", p, errno);
+
+  return 0;
+}
+m4_divert_pop([KILL])
+          gl_cv_func_malloc_posix=no ;;
+        *)
+          gl_cv_func_malloc_posix=yes ;;
+      esac
+    ])
+])
diff --git a/src/grep/m4/malloca.m4 b/src/grep/m4/malloca.m4
new file mode 100644
index 0000000..06ed2c6
--- /dev/null
+++ b/src/grep/m4/malloca.m4
@@ -0,0 +1,14 @@
+# malloca.m4 serial 2
+dnl Copyright (C) 2003-2004, 2006-2007, 2009-2021 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_MALLOCA],
+[
+  dnl Use the autoconf tests for alloca(), but not the AC_SUBSTed variables
+  dnl @ALLOCA@ and @LTALLOCA@.
+  dnl gl_FUNC_ALLOCA   dnl Already brought in by the module dependencies.
+  AC_REQUIRE([gl_EEMALLOC])
+])
diff --git a/src/grep/m4/manywarnings.m4 b/src/grep/m4/manywarnings.m4
new file mode 100644
index 0000000..872ea58
--- /dev/null
+++ b/src/grep/m4/manywarnings.m4
@@ -0,0 +1,209 @@
+# manywarnings.m4 serial 23
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Simon Josefsson
+
+# gl_MANYWARN_COMPLEMENT(OUTVAR, LISTVAR, REMOVEVAR)
+# --------------------------------------------------
+# Copy LISTVAR to OUTVAR except for the entries in REMOVEVAR.
+# Elements separated by whitespace.  In set logic terms, the function
+# does OUTVAR = LISTVAR \ REMOVEVAR.
+AC_DEFUN([gl_MANYWARN_COMPLEMENT],
+[
+  gl_warn_set=
+  set x $2; shift
+  for gl_warn_item
+  do
+    case " $3 " in
+      *" $gl_warn_item "*)
+        ;;
+      *)
+        gl_AS_VAR_APPEND([gl_warn_set], [" $gl_warn_item"])
+        ;;
+    esac
+  done
+  $1=$gl_warn_set
+])
+
+# gl_MANYWARN_ALL_GCC(VARIABLE)
+# -----------------------------
+# Add all documented GCC warning parameters to variable VARIABLE.
+# Note that you need to test them using gl_WARN_ADD if you want to
+# make sure your gcc understands it.
+#
+# The effects of this macro depend on the current language (_AC_LANG).
+AC_DEFUN([gl_MANYWARN_ALL_GCC],
+[_AC_LANG_DISPATCH([$0], _AC_LANG, $@)])
+
+# Specialization for _AC_LANG = C.
+AC_DEFUN([gl_MANYWARN_ALL_GCC(C)],
+[
+  AC_LANG_PUSH([C])
+
+  dnl First, check for some issues that only occur when combining multiple
+  dnl gcc warning categories.
+  AC_REQUIRE([AC_PROG_CC])
+  if test -n "$GCC"; then
+
+    dnl Check if -Wextra -Werror -Wno-missing-field-initializers is supported
+    dnl with the current $CC $CFLAGS $CPPFLAGS.
+    AC_CACHE_CHECK([whether -Wno-missing-field-initializers is supported],
+      [gl_cv_cc_nomfi_supported],
+      [gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -Wextra -Werror -Wno-missing-field-initializers"
+       AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([[]], [[]])],
+         [gl_cv_cc_nomfi_supported=yes],
+         [gl_cv_cc_nomfi_supported=no])
+       CFLAGS="$gl_save_CFLAGS"
+      ])
+
+    if test "$gl_cv_cc_nomfi_supported" = yes; then
+      dnl Now check whether -Wno-missing-field-initializers is needed
+      dnl for the { 0, } construct.
+      AC_CACHE_CHECK([whether -Wno-missing-field-initializers is needed],
+        [gl_cv_cc_nomfi_needed],
+        [gl_save_CFLAGS="$CFLAGS"
+         CFLAGS="$CFLAGS -Wextra -Werror"
+         AC_COMPILE_IFELSE(
+           [AC_LANG_PROGRAM(
+              [[int f (void)
+                {
+                  typedef struct { int a; int b; } s_t;
+                  s_t s1 = { 0, };
+                  return s1.b;
+                }
+              ]],
+              [[]])],
+           [gl_cv_cc_nomfi_needed=no],
+           [gl_cv_cc_nomfi_needed=yes])
+         CFLAGS="$gl_save_CFLAGS"
+        ])
+    fi
+
+    dnl Next, check if -Werror -Wuninitialized is useful with the
+    dnl user's choice of $CFLAGS; some versions of gcc warn that it
+    dnl has no effect if -O is not also used
+    AC_CACHE_CHECK([whether -Wuninitialized is supported],
+      [gl_cv_cc_uninitialized_supported],
+      [gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -Werror -Wuninitialized"
+       AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([[]], [[]])],
+         [gl_cv_cc_uninitialized_supported=yes],
+         [gl_cv_cc_uninitialized_supported=no])
+       CFLAGS="$gl_save_CFLAGS"
+      ])
+
+  fi
+
+  # List all gcc warning categories.
+  # To compare this list to your installed GCC's, run this Bash command:
+  #
+  # comm -3 \
+  #  <((sed -n 's/^  *\(-[^ 0-9][^ ]*\).*/\1/p' manywarnings.m4; \
+  #     awk '/^[^#]/ {print $1}' ../build-aux/gcc-warning.spec) | sort) \
+  #  <(LC_ALL=C gcc --help=warnings | sed -n 's/^  \(-[^ ]*\) .*/\1/p' | sort)
+
+  $1=
+  for gl_manywarn_item in -fanalyzer -fno-common \
+    -Wall \
+    -Warith-conversion \
+    -Wbad-function-cast \
+    -Wcast-align=strict \
+    -Wdate-time \
+    -Wdisabled-optimization \
+    -Wdouble-promotion \
+    -Wduplicated-branches \
+    -Wduplicated-cond \
+    -Wextra \
+    -Wformat-signedness \
+    -Winit-self \
+    -Winline \
+    -Winvalid-pch \
+    -Wlogical-op \
+    -Wmissing-declarations \
+    -Wmissing-include-dirs \
+    -Wmissing-prototypes \
+    -Wnested-externs \
+    -Wnull-dereference \
+    -Wold-style-definition \
+    -Wopenmp-simd \
+    -Woverlength-strings \
+    -Wpacked \
+    -Wpointer-arith \
+    -Wshadow \
+    -Wstack-protector \
+    -Wstrict-overflow \
+    -Wstrict-prototypes \
+    -Wsuggest-attribute=cold \
+    -Wsuggest-attribute=const \
+    -Wsuggest-attribute=format \
+    -Wsuggest-attribute=malloc \
+    -Wsuggest-attribute=noreturn \
+    -Wsuggest-attribute=pure \
+    -Wsuggest-final-methods \
+    -Wsuggest-final-types \
+    -Wsync-nand \
+    -Wsystem-headers \
+    -Wtrampolines \
+    -Wuninitialized \
+    -Wunknown-pragmas \
+    -Wunsafe-loop-optimizations \
+    -Wunused-macros \
+    -Wvariadic-macros \
+    -Wvector-operation-performance \
+    -Wvla \
+    -Wwrite-strings \
+    \
+    ; do
+    gl_AS_VAR_APPEND([$1], [" $gl_manywarn_item"])
+  done
+
+  # gcc --help=warnings outputs an unusual form for these options; list
+  # them here so that the above 'comm' command doesn't report a false match.
+  gl_AS_VAR_APPEND([$1], [' -Warray-bounds=2'])
+  gl_AS_VAR_APPEND([$1], [' -Wattribute-alias=2'])
+  gl_AS_VAR_APPEND([$1], [' -Wformat-overflow=2'])
+  gl_AS_VAR_APPEND([$1], [' -Wformat=2'])
+  gl_AS_VAR_APPEND([$1], [' -Wformat-truncation=2'])
+  gl_AS_VAR_APPEND([$1], [' -Wimplicit-fallthrough=5'])
+  gl_AS_VAR_APPEND([$1], [' -Wshift-overflow=2'])
+  gl_AS_VAR_APPEND([$1], [' -Wunused-const-variable=2'])
+  gl_AS_VAR_APPEND([$1], [' -Wvla-larger-than=4031'])
+
+  # These are needed for older GCC versions.
+  if test -n "$GCC"; then
+    case `($CC --version) 2>/dev/null` in
+      'gcc (GCC) '[[0-3]].* | \
+      'gcc (GCC) '4.[[0-7]].*)
+        gl_AS_VAR_APPEND([$1], [' -fdiagnostics-show-option'])
+        gl_AS_VAR_APPEND([$1], [' -funit-at-a-time'])
+          ;;
+    esac
+  fi
+
+  # Disable specific options as needed.
+  if test "$gl_cv_cc_nomfi_needed" = yes; then
+    gl_AS_VAR_APPEND([$1], [' -Wno-missing-field-initializers'])
+  fi
+
+  if test "$gl_cv_cc_uninitialized_supported" = no; then
+    gl_AS_VAR_APPEND([$1], [' -Wno-uninitialized'])
+  fi
+
+  # This warning have too many false alarms in GCC 11.2.1.
+  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101713
+  gl_AS_VAR_APPEND([$1], [' -Wno-analyzer-malloc-leak'])
+
+  AC_LANG_POP([C])
+])
+
+# Specialization for _AC_LANG = C++.
+AC_DEFUN([gl_MANYWARN_ALL_GCC(C++)],
+[
+  gl_MANYWARN_ALL_GCC_CXX_IMPL([$1])
+])
diff --git a/src/grep/m4/mbchar.m4 b/src/grep/m4/mbchar.m4
new file mode 100644
index 0000000..b6842bb
--- /dev/null
+++ b/src/grep/m4/mbchar.m4
@@ -0,0 +1,13 @@
+# mbchar.m4 serial 9
+dnl Copyright (C) 2005-2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl autoconf tests required for use of mbchar.m4
+dnl From Bruno Haible.
+
+AC_DEFUN([gl_MBCHAR],
+[
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+])
diff --git a/src/grep/m4/mbiter.m4 b/src/grep/m4/mbiter.m4
new file mode 100644
index 0000000..0d57379
--- /dev/null
+++ b/src/grep/m4/mbiter.m4
@@ -0,0 +1,14 @@
+# mbiter.m4 serial 7
+dnl Copyright (C) 2005, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl autoconf tests required for use of mbiter.h
+dnl From Bruno Haible.
+
+AC_DEFUN([gl_MBITER],
+[
+  AC_REQUIRE([AC_TYPE_MBSTATE_T])
+  :
+])
diff --git a/src/grep/m4/mbrlen.m4 b/src/grep/m4/mbrlen.m4
new file mode 100644
index 0000000..6abf817
--- /dev/null
+++ b/src/grep/m4/mbrlen.m4
@@ -0,0 +1,238 @@
+# mbrlen.m4 serial 11  -*- coding: utf-8 -*-
+dnl Copyright (C) 2008, 2010-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_MBRLEN],
+[
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+
+  AC_REQUIRE([AC_TYPE_MBSTATE_T])
+  AC_REQUIRE([gl_FUNC_MBRTOWC])
+  AC_CHECK_FUNCS_ONCE([mbrlen])
+  if test $ac_cv_func_mbrlen = no; then
+    HAVE_MBRLEN=0
+    AC_CHECK_DECLS([mbrlen],,, [[
+      #include <wchar.h>
+    ]])
+    if test $ac_cv_have_decl_mbrlen = yes; then
+      dnl On Minix 3.1.8, the system's <wchar.h> declares mbrlen() although
+      dnl it does not have the function. Avoid a collision with gnulib's
+      dnl replacement.
+      REPLACE_MBRLEN=1
+    fi
+  else
+    dnl Most bugs affecting the system's mbrtowc function also affect the
+    dnl mbrlen function. So override mbrlen whenever mbrtowc is overridden.
+    dnl We could also run the individual tests below; the results would be
+    dnl the same.
+    if test $REPLACE_MBRTOWC = 1; then
+      REPLACE_MBRLEN=1
+    fi
+  fi
+])
+
+dnl Test whether mbrlen puts the state into non-initial state when parsing an
+dnl incomplete multibyte character.
+dnl Result is gl_cv_func_mbrlen_incomplete_state.
+
+AC_DEFUN([gl_MBRLEN_INCOMPLETE_STATE],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gt_LOCALE_JA])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbrlen handles incomplete characters],
+    [gl_cv_func_mbrlen_incomplete_state],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+                     # Guess no on AIX and OSF/1.
+        aix* | osf*) gl_cv_func_mbrlen_incomplete_state="guessing no" ;;
+                     # Guess yes otherwise.
+        *)           gl_cv_func_mbrlen_incomplete_state="guessing yes" ;;
+      esac
+changequote([,])dnl
+      if test $LOCALE_JA != none; then
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrlen (input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 1;
+    }
+  return 0;
+}]])],
+          [gl_cv_func_mbrlen_incomplete_state=yes],
+          [gl_cv_func_mbrlen_incomplete_state=no],
+          [])
+      fi
+    ])
+])
+
+dnl Test whether mbrlen, when parsing the end of a multibyte character,
+dnl correctly returns the number of bytes that were needed to complete the
+dnl character (not the total number of bytes of the multibyte character).
+dnl Result is gl_cv_func_mbrlen_retval.
+
+AC_DEFUN([gl_MBRLEN_RETVAL],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gt_LOCALE_FR_UTF8])
+  AC_REQUIRE([gt_LOCALE_JA])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbrlen has a correct return value],
+    [gl_cv_func_mbrlen_retval],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+                          # Guess no on HP-UX and Solaris.
+        hpux* | solaris*) gl_cv_func_mbrlen_retval="guessing no" ;;
+                          # Guess yes otherwise.
+        *)                gl_cv_func_mbrlen_retval="guessing yes" ;;
+      esac
+changequote([,])dnl
+      if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none; then
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  int result = 0;
+  /* This fails on Solaris.  */
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      char input[] = "B\303\274\303\237er"; /* "Büßer" */
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrlen (input + 1, 1, &state) == (size_t)(-2))
+        {
+          input[1] = '\0';
+          if (mbrlen (input + 2, 5, &state) != 1)
+            result |= 1;
+        }
+    }
+  /* This fails on HP-UX 11.11.  */
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrlen (input + 1, 1, &state) == (size_t)(-2))
+        {
+          input[1] = '\0';
+          if (mbrlen (input + 2, 5, &state) != 2)
+            result |= 2;
+        }
+    }
+  return result;
+}]])],
+          [gl_cv_func_mbrlen_retval=yes],
+          [gl_cv_func_mbrlen_retval=no],
+          [])
+      fi
+    ])
+])
+
+dnl Test whether mbrlen, when parsing a NUL character, correctly returns 0.
+dnl Result is gl_cv_func_mbrlen_nul_retval.
+
+AC_DEFUN([gl_MBRLEN_NUL_RETVAL],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gt_LOCALE_ZH_CN])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbrlen returns 0 when parsing a NUL character],
+    [gl_cv_func_mbrlen_nul_retval],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+                    # Guess no on Solaris 9.
+        solaris2.9) gl_cv_func_mbrlen_nul_retval="guessing no" ;;
+                    # Guess yes otherwise.
+        *)          gl_cv_func_mbrlen_nul_retval="guessing yes" ;;
+      esac
+changequote([,])dnl
+      if test $LOCALE_ZH_CN != none; then
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  /* This crashes on Solaris 9 inside __mbrtowc_dense_gb18030.  */
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrlen ("", 1, &state) != 0)
+        return 1;
+    }
+  return 0;
+}]])],
+          [gl_cv_func_mbrlen_nul_retval=yes],
+          [gl_cv_func_mbrlen_nul_retval=no],
+          [])
+      fi
+    ])
+])
+
+dnl Test whether mbrlen returns the correct value on empty input.
+
+AC_DEFUN([gl_MBRLEN_EMPTY_INPUT],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbrlen works on empty input],
+    [gl_cv_func_mbrlen_empty_input],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+                              # Guess no on AIX and glibc systems.
+        aix* | *-gnu* | gnu*) gl_cv_func_mbrlen_empty_input="guessing no" ;;
+        *)                    gl_cv_func_mbrlen_empty_input="guessing yes" ;;
+      esac
+changequote([,])dnl
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+           #include <wchar.h>
+           static mbstate_t mbs;
+           int
+           main (void)
+           {
+             return mbrlen ("", 0, &mbs) != (size_t) -2;
+           }]])],
+        [gl_cv_func_mbrlen_empty_input=yes],
+        [gl_cv_func_mbrlen_empty_input=no],
+        [:])
+    ])
+])
+
+# Prerequisites of lib/mbrlen.c.
+AC_DEFUN([gl_PREREQ_MBRLEN], [
+  :
+])
diff --git a/src/grep/m4/mbrtowc.m4 b/src/grep/m4/mbrtowc.m4
new file mode 100644
index 0000000..1d4e73d
--- /dev/null
+++ b/src/grep/m4/mbrtowc.m4
@@ -0,0 +1,790 @@
+# mbrtowc.m4 serial 38  -*- coding: utf-8 -*-
+dnl Copyright (C) 2001-2002, 2004-2005, 2008-2021 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_MBRTOWC],
+[
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+  AC_REQUIRE([gl_PTHREADLIB])
+  AC_CHECK_HEADERS_ONCE([threads.h])
+
+  AC_REQUIRE([AC_TYPE_MBSTATE_T])
+  gl_MBSTATE_T_BROKEN
+
+  AC_CHECK_FUNCS_ONCE([mbrtowc])
+  if test $ac_cv_func_mbrtowc = no; then
+    HAVE_MBRTOWC=0
+    AC_CHECK_DECLS([mbrtowc],,, [[
+      #include <wchar.h>
+    ]])
+    if test $ac_cv_have_decl_mbrtowc = yes; then
+      dnl On Minix 3.1.8, the system's <wchar.h> declares mbrtowc() although
+      dnl it does not have the function. Avoid a collision with gnulib's
+      dnl replacement.
+      REPLACE_MBRTOWC=1
+    fi
+  else
+    if test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_MBRTOWC=1
+    else
+      gl_MBRTOWC_NULL_ARG1
+      gl_MBRTOWC_NULL_ARG2
+      gl_MBRTOWC_RETVAL
+      gl_MBRTOWC_NUL_RETVAL
+      gl_MBRTOWC_STORES_INCOMPLETE
+      gl_MBRTOWC_EMPTY_INPUT
+      gl_MBRTOWC_C_LOCALE
+      case "$gl_cv_func_mbrtowc_null_arg1" in
+        *yes) ;;
+        *) AC_DEFINE([MBRTOWC_NULL_ARG1_BUG], [1],
+             [Define if the mbrtowc function has the NULL pwc argument bug.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_null_arg2" in
+        *yes) ;;
+        *) AC_DEFINE([MBRTOWC_NULL_ARG2_BUG], [1],
+             [Define if the mbrtowc function has the NULL string argument bug.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_retval" in
+        *yes) ;;
+        *) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1],
+             [Define if the mbrtowc function returns a wrong return value.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_nul_retval" in
+        *yes) ;;
+        *) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1],
+             [Define if the mbrtowc function does not return 0 for a NUL character.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_stores_incomplete" in
+        *no) ;;
+        *) AC_DEFINE([MBRTOWC_STORES_INCOMPLETE_BUG], [1],
+             [Define if the mbrtowc function stores a wide character when reporting incomplete input.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_empty_input" in
+        *yes) ;;
+        *) AC_DEFINE([MBRTOWC_EMPTY_INPUT_BUG], [1],
+             [Define if the mbrtowc function does not return (size_t) -2
+              for empty input.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_C_locale_sans_EILSEQ" in
+        *yes) ;;
+        *) AC_DEFINE([MBRTOWC_IN_C_LOCALE_MAYBE_EILSEQ], [1],
+             [Define if the mbrtowc function may signal encoding errors in the C locale.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+    fi
+  fi
+  if test $REPLACE_MBSTATE_T = 1; then
+    case "$host_os" in
+      mingw*) LIB_MBRTOWC= ;;
+      *)
+        gl_WEAK_SYMBOLS
+        case "$gl_cv_have_weak" in
+          *yes) LIB_MBRTOWC= ;;
+          *)    LIB_MBRTOWC="$LIBPTHREAD" ;;
+        esac
+        ;;
+    esac
+  else
+    LIB_MBRTOWC=
+  fi
+  dnl LIB_MBRTOWC is expected to be '-pthread' or '-lpthread' on AIX
+  dnl with gcc or xlc, and empty otherwise.
+  AC_SUBST([LIB_MBRTOWC])
+])
+
+dnl Test whether mbsinit() and mbrtowc() need to be overridden in a way that
+dnl redefines the semantics of the given mbstate_t type.
+dnl Result is REPLACE_MBSTATE_T.
+dnl When this is set to 1, we replace both mbsinit() and mbrtowc(), in order to
+dnl avoid inconsistencies.
+
+AC_DEFUN([gl_MBSTATE_T_BROKEN],
+[
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  AC_REQUIRE([AC_TYPE_MBSTATE_T])
+  AC_CHECK_FUNCS_ONCE([mbsinit])
+  AC_CHECK_FUNCS_ONCE([mbrtowc])
+  dnl On native Windows, we know exactly how mbsinit() behaves and don't need
+  dnl to override it, even if - like on MSVC - mbsinit() is only defined as
+  dnl an inline function, not as a global function.
+  if case "$host_os" in
+       mingw*) true ;;
+       *) test $ac_cv_func_mbsinit = yes ;;
+     esac \
+    && test $ac_cv_func_mbrtowc = yes; then
+    gl_MBRTOWC_INCOMPLETE_STATE
+    gl_MBRTOWC_SANITYCHECK
+    REPLACE_MBSTATE_T=0
+    case "$gl_cv_func_mbrtowc_incomplete_state" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+    case "$gl_cv_func_mbrtowc_sanitycheck" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+  else
+    REPLACE_MBSTATE_T=1
+  fi
+])
+
+dnl Test whether mbrtowc puts the state into non-initial state when parsing an
+dnl incomplete multibyte character.
+dnl Result is gl_cv_func_mbrtowc_incomplete_state.
+
+AC_DEFUN([gl_MBRTOWC_INCOMPLETE_STATE],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gt_LOCALE_JA])
+  AC_REQUIRE([gt_LOCALE_FR_UTF8])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbrtowc handles incomplete characters],
+    [gl_cv_func_mbrtowc_incomplete_state],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+                     # Guess no on AIX and OSF/1.
+        aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;
+                     # Guess yes otherwise.
+        *)           gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;
+      esac
+changequote([,])dnl
+      if test $LOCALE_JA != none; then
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}]])],
+          [gl_cv_func_mbrtowc_incomplete_state=yes],
+          [gl_cv_func_mbrtowc_incomplete_state=no],
+          [:])
+      else
+        if test $LOCALE_FR_UTF8 != none; then
+          AC_RUN_IFELSE(
+            [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      const char input[] = "B\303\274\303\237er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        if (mbsinit (&state))
+          return 2;
+    }
+  return 0;
+}]])],
+          [gl_cv_func_mbrtowc_incomplete_state=yes],
+          [gl_cv_func_mbrtowc_incomplete_state=no],
+          [:])
+        fi
+      fi
+    ])
+])
+
+dnl Test whether mbrtowc works not worse than mbtowc.
+dnl Result is gl_cv_func_mbrtowc_sanitycheck.
+
+AC_DEFUN([gl_MBRTOWC_SANITYCHECK],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gt_LOCALE_ZH_CN])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbrtowc works as well as mbtowc],
+    [gl_cv_func_mbrtowc_sanitycheck],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+                    # Guess no on Solaris 8.
+        solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;
+                    # Guess yes otherwise.
+        *)          gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;
+      esac
+changequote([,])dnl
+      if test $LOCALE_ZH_CN != none; then
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  /* This fails on Solaris 8:
+     mbrtowc returns 2, and sets wc to 0x00F0.
+     mbtowc returns 4 (correct) and sets wc to 0x5EDC.  */
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 6, &state) != 4
+          && mbtowc (&wc, input + 3, 6) == 4)
+        return 2;
+    }
+  return 0;
+}]])],
+          [gl_cv_func_mbrtowc_sanitycheck=yes],
+          [gl_cv_func_mbrtowc_sanitycheck=no],
+          [:])
+      fi
+    ])
+])
+
+dnl Test whether mbrtowc supports a NULL pwc argument correctly.
+dnl Result is gl_cv_func_mbrtowc_null_arg1.
+
+AC_DEFUN([gl_MBRTOWC_NULL_ARG1],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gt_LOCALE_FR_UTF8])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbrtowc handles a NULL pwc argument],
+    [gl_cv_func_mbrtowc_null_arg1],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+                  # Guess no on Solaris.
+        solaris*) gl_cv_func_mbrtowc_null_arg1="guessing no" ;;
+                  # Guess yes otherwise.
+        *)        gl_cv_func_mbrtowc_null_arg1="guessing yes" ;;
+      esac
+changequote([,])dnl
+      if test $LOCALE_FR_UTF8 != none; then
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  int result = 0;
+
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      char input[] = "\303\237er";
+      mbstate_t state;
+      wchar_t wc;
+      size_t ret;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      wc = (wchar_t) 0xBADFACE;
+      ret = mbrtowc (&wc, input, 5, &state);
+      if (ret != 2)
+        result |= 1;
+      if (!mbsinit (&state))
+        result |= 2;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      ret = mbrtowc (NULL, input, 5, &state);
+      if (ret != 2) /* Solaris 7 fails here: ret is -1.  */
+        result |= 4;
+      if (!mbsinit (&state))
+        result |= 8;
+    }
+  return result;
+}]])],
+          [gl_cv_func_mbrtowc_null_arg1=yes],
+          [gl_cv_func_mbrtowc_null_arg1=no],
+          [:])
+      fi
+    ])
+])
+
+dnl Test whether mbrtowc supports a NULL string argument correctly.
+dnl Result is gl_cv_func_mbrtowc_null_arg2.
+
+AC_DEFUN([gl_MBRTOWC_NULL_ARG2],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gt_LOCALE_FR_UTF8])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbrtowc handles a NULL string argument],
+    [gl_cv_func_mbrtowc_null_arg2],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+              # Guess no on OSF/1.
+        osf*) gl_cv_func_mbrtowc_null_arg2="guessing no" ;;
+              # Guess yes otherwise.
+        *)    gl_cv_func_mbrtowc_null_arg2="guessing yes" ;;
+      esac
+changequote([,])dnl
+      if test $LOCALE_FR_UTF8 != none; then
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      mbstate_t state;
+      wchar_t wc;
+      int ret;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      wc = (wchar_t) 0xBADFACE;
+      mbrtowc (&wc, NULL, 5, &state);
+      /* Check that wc was not modified.  */
+      if (wc != (wchar_t) 0xBADFACE)
+        return 2;
+    }
+  return 0;
+}]])],
+          [gl_cv_func_mbrtowc_null_arg2=yes],
+          [gl_cv_func_mbrtowc_null_arg2=no],
+          [:])
+      fi
+    ])
+])
+
+dnl Test whether mbrtowc, when parsing the end of a multibyte character,
+dnl correctly returns the number of bytes that were needed to complete the
+dnl character (not the total number of bytes of the multibyte character).
+dnl Result is gl_cv_func_mbrtowc_retval.
+
+AC_DEFUN([gl_MBRTOWC_RETVAL],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gt_LOCALE_FR_UTF8])
+  AC_REQUIRE([gt_LOCALE_JA])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CACHE_CHECK([whether mbrtowc has a correct return value],
+    [gl_cv_func_mbrtowc_retval],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+                                   # Guess no on HP-UX, Solaris, native Windows.
+        hpux* | solaris* | mingw*) gl_cv_func_mbrtowc_retval="guessing no" ;;
+                                   # Guess yes otherwise.
+        *)                         gl_cv_func_mbrtowc_retval="guessing yes" ;;
+      esac
+changequote([,])dnl
+      if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none \
+         || { case "$host_os" in mingw*) true;; *) false;; esac; }; then
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  int result = 0;
+  int found_some_locale = 0;
+  /* This fails on Solaris.  */
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      char input[] = "B\303\274\303\237er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        {
+          input[1] = '\0';
+          if (mbrtowc (&wc, input + 2, 5, &state) != 1)
+            result |= 1;
+        }
+      found_some_locale = 1;
+    }
+  /* This fails on HP-UX 11.11.  */
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
+        {
+          input[1] = '\0';
+          if (mbrtowc (&wc, input + 2, 5, &state) != 2)
+            result |= 2;
+        }
+      found_some_locale = 1;
+    }
+  /* This fails on native Windows.  */
+  if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL)
+    {
+      char input[] = "<\223\372\226\173\214\352>"; /* "<日本語>" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
+        {
+          input[3] = '\0';
+          if (mbrtowc (&wc, input + 4, 4, &state) != 1)
+            result |= 4;
+        }
+      found_some_locale = 1;
+    }
+  if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL)
+    {
+      char input[] = "<\244\351\245\273\273\171>"; /* "<日本語>" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
+        {
+          input[3] = '\0';
+          if (mbrtowc (&wc, input + 4, 4, &state) != 1)
+            result |= 8;
+        }
+      found_some_locale = 1;
+    }
+  if (setlocale (LC_ALL, "Chinese_China.936") != NULL)
+    {
+      char input[] = "<\310\325\261\276\325\132>"; /* "<日本語>" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
+        {
+          input[3] = '\0';
+          if (mbrtowc (&wc, input + 4, 4, &state) != 1)
+            result |= 16;
+        }
+      found_some_locale = 1;
+    }
+  return (found_some_locale ? result : 77);
+}]])],
+          [gl_cv_func_mbrtowc_retval=yes],
+          [if test $? != 77; then
+             gl_cv_func_mbrtowc_retval=no
+           fi
+          ],
+          [:])
+      fi
+    ])
+])
+
+dnl Test whether mbrtowc, when parsing a NUL character, correctly returns 0.
+dnl Result is gl_cv_func_mbrtowc_nul_retval.
+
+AC_DEFUN([gl_MBRTOWC_NUL_RETVAL],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gt_LOCALE_ZH_CN])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbrtowc returns 0 when parsing a NUL character],
+    [gl_cv_func_mbrtowc_nul_retval],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+                       # Guess no on Solaris 8 and 9.
+        solaris2.[89]) gl_cv_func_mbrtowc_nul_retval="guessing no" ;;
+                       # Guess yes otherwise.
+        *)             gl_cv_func_mbrtowc_nul_retval="guessing yes" ;;
+      esac
+changequote([,])dnl
+      if test $LOCALE_ZH_CN != none; then
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  /* This fails on Solaris 8 and 9.  */
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "", 1, &state) != 0)
+        return 2;
+    }
+  return 0;
+}]])],
+          [gl_cv_func_mbrtowc_nul_retval=yes],
+          [gl_cv_func_mbrtowc_nul_retval=no],
+          [:])
+      fi
+    ])
+])
+
+dnl Test whether mbrtowc stores a wide character when reporting incomplete
+dnl input.
+
+AC_DEFUN([gl_MBRTOWC_STORES_INCOMPLETE],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbrtowc stores incomplete characters],
+    [gl_cv_func_mbrtowc_stores_incomplete],
+    [
+     dnl Initial guess, used when cross-compiling or when no suitable locale
+     dnl is present.
+changequote(,)dnl
+     case "$host_os" in
+               # Guess yes on native Windows.
+       mingw*) gl_cv_func_mbrtowc_stores_incomplete="guessing yes" ;;
+       *)      gl_cv_func_mbrtowc_stores_incomplete="guessing no" ;;
+     esac
+changequote([,])dnl
+     case "$host_os" in
+       mingw*)
+         AC_RUN_IFELSE(
+           [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  int result = 0;
+  if (setlocale (LC_ALL, "French_France.65001") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\303", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        result |= 1;
+    }
+  if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\226", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        result |= 2;
+    }
+  if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\245", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        result |= 4;
+    }
+  if (setlocale (LC_ALL, "Chinese_China.936") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\261", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        result |= 8;
+    }
+  return result;
+}]])],
+           [gl_cv_func_mbrtowc_stores_incomplete=no],
+           [gl_cv_func_mbrtowc_stores_incomplete=yes],
+           [:])
+         ;;
+       *)
+         AC_REQUIRE([gt_LOCALE_FR_UTF8])
+         if test $LOCALE_FR_UTF8 != none; then
+           AC_RUN_IFELSE(
+             [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      wchar_t wc = (wchar_t) 0xBADFACE;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, "\303", 1, &state) == (size_t)(-2)
+          && wc != (wchar_t) 0xBADFACE)
+        return 1;
+    }
+  return 0;
+}]])],
+             [gl_cv_func_mbrtowc_stores_incomplete=no],
+             [gl_cv_func_mbrtowc_stores_incomplete=yes],
+             [:])
+         fi
+         ;;
+     esac
+    ])
+])
+
+dnl Test whether mbrtowc returns the correct value on empty input.
+
+AC_DEFUN([gl_MBRTOWC_EMPTY_INPUT],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbrtowc works on empty input],
+    [gl_cv_func_mbrtowc_empty_input],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+                              # Guess no on AIX and glibc systems.
+        aix* | *-gnu* | gnu*) gl_cv_func_mbrtowc_empty_input="guessing no" ;;
+                              # Guess yes on native Windows.
+        mingw*)               gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
+        *)                    gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
+      esac
+changequote([,])dnl
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+           #include <wchar.h>
+           static wchar_t wc;
+           static mbstate_t mbs;
+           int
+           main (void)
+           {
+             return mbrtowc (&wc, "", 0, &mbs) != (size_t) -2;
+           }]])],
+        [gl_cv_func_mbrtowc_empty_input=yes],
+        [gl_cv_func_mbrtowc_empty_input=no],
+        [:])
+    ])
+])
+
+dnl Test whether mbrtowc reports encoding errors in the C locale.
+dnl Although POSIX was never intended to allow this, the GNU C Library
+dnl and other implementations do it.  See:
+dnl https://sourceware.org/bugzilla/show_bug.cgi?id=19932
+
+AC_DEFUN([gl_MBRTOWC_C_LOCALE],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether the C locale is free of encoding errors],
+    [gl_cv_func_mbrtowc_C_locale_sans_EILSEQ],
+    [
+     dnl Initial guess, used when cross-compiling or when no suitable locale
+     dnl is present.
+     gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="$gl_cross_guess_normal"
+
+     AC_RUN_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <limits.h>
+            #include <locale.h>
+            #include <wchar.h>
+          ]], [[
+            int i;
+            char *locale = setlocale (LC_ALL, "C");
+            if (! locale)
+              return 2;
+            for (i = CHAR_MIN; i <= CHAR_MAX; i++)
+              {
+                char c = i;
+                wchar_t wc;
+                mbstate_t mbs = { 0, };
+                size_t ss = mbrtowc (&wc, &c, 1, &mbs);
+                if (1 < ss)
+                  return 3;
+              }
+            return 0;
+          ]])],
+      [gl_cv_func_mbrtowc_C_locale_sans_EILSEQ=yes],
+      [gl_cv_func_mbrtowc_C_locale_sans_EILSEQ=no],
+      [case "$host_os" in
+                 # Guess yes on native Windows.
+         mingw*) gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="guessing yes" ;;
+       esac
+      ])
+    ])
+])
+
+# Prerequisites of lib/mbrtowc.c and lib/lc-charset-dispatch.c.
+AC_DEFUN([gl_PREREQ_MBRTOWC], [
+  AC_REQUIRE([AC_C_INLINE])
+  :
+])
+
+# Prerequisites of lib/mbtowc-lock.c.
+AC_DEFUN([gl_PREREQ_MBTOWC_LOCK],
+[
+  gl_VISIBILITY
+])
+
+
+dnl From Paul Eggert
+
+dnl This is an override of an autoconf macro.
+
+AC_DEFUN([AC_FUNC_MBRTOWC],
+[
+  dnl Same as AC_FUNC_MBRTOWC in autoconf-2.60.
+  AC_CACHE_CHECK([whether mbrtowc and mbstate_t are properly declared],
+    [gl_cv_func_mbrtowc],
+    [AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+            [[#include <wchar.h>]],
+            [[wchar_t wc;
+              char const s[] = "";
+              size_t n = 1;
+              mbstate_t state;
+              return ! (sizeof state && (mbrtowc) (&wc, s, n, &state));]])],
+       [gl_cv_func_mbrtowc=yes],
+       [gl_cv_func_mbrtowc=no])])
+  if test $gl_cv_func_mbrtowc = yes; then
+    AC_DEFINE([HAVE_MBRTOWC], [1],
+      [Define to 1 if mbrtowc and mbstate_t are properly declared.])
+  fi
+])
diff --git a/src/grep/m4/mbsinit.m4 b/src/grep/m4/mbsinit.m4
new file mode 100644
index 0000000..dc6e10d
--- /dev/null
+++ b/src/grep/m4/mbsinit.m4
@@ -0,0 +1,44 @@
+# mbsinit.m4 serial 9
+dnl Copyright (C) 2008, 2010-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_MBSINIT],
+[
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  AC_REQUIRE([AC_TYPE_MBSTATE_T])
+  gl_MBSTATE_T_BROKEN
+
+  AC_CHECK_FUNCS_ONCE([mbsinit])
+  if test $ac_cv_func_mbsinit = no; then
+    HAVE_MBSINIT=0
+    AC_CHECK_DECLS([mbsinit],,, [[
+      #include <wchar.h>
+    ]])
+    if test $ac_cv_have_decl_mbsinit = yes; then
+      dnl On Minix 3.1.8, the system's <wchar.h> declares mbsinit() although
+      dnl it does not have the function. Avoid a collision with gnulib's
+      dnl replacement.
+      REPLACE_MBSINIT=1
+    fi
+  else
+    if test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_MBSINIT=1
+    else
+      dnl On mingw, mbsinit() always returns 1, which is inappropriate for
+      dnl states produced by mbrtowc() for an incomplete multibyte character
+      dnl in multibyte locales.
+      case "$host_os" in
+        mingw*) REPLACE_MBSINIT=1 ;;
+      esac
+    fi
+  fi
+])
+
+# Prerequisites of lib/mbsinit.c.
+AC_DEFUN([gl_PREREQ_MBSINIT], [
+  :
+])
diff --git a/src/grep/m4/mbslen.m4 b/src/grep/m4/mbslen.m4
new file mode 100644
index 0000000..0801fdf
--- /dev/null
+++ b/src/grep/m4/mbslen.m4
@@ -0,0 +1,16 @@
+# mbslen.m4 serial 3
+dnl Copyright (C) 2010-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_MBSLEN],
+[
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+  AC_CHECK_FUNCS_ONCE([mbslen])
+  if test $ac_cv_func_mbslen = yes; then
+    HAVE_MBSLEN=1
+  else
+    HAVE_MBSLEN=0
+  fi
+])
diff --git a/src/grep/m4/mbsrtowcs.m4 b/src/grep/m4/mbsrtowcs.m4
new file mode 100644
index 0000000..cf8e962
--- /dev/null
+++ b/src/grep/m4/mbsrtowcs.m4
@@ -0,0 +1,141 @@
+# mbsrtowcs.m4 serial 14
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_MBSRTOWCS],
+[
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+
+  AC_REQUIRE([AC_TYPE_MBSTATE_T])
+  gl_MBSTATE_T_BROKEN
+
+  AC_CHECK_FUNCS_ONCE([mbsrtowcs])
+  if test $ac_cv_func_mbsrtowcs = no; then
+    HAVE_MBSRTOWCS=0
+    AC_CHECK_DECLS([mbsrtowcs],,, [[
+      #include <wchar.h>
+    ]])
+    if test $ac_cv_have_decl_mbsrtowcs = yes; then
+      dnl On Minix 3.1.8, the system's <wchar.h> declares mbsrtowcs() although
+      dnl it does not have the function. Avoid a collision with gnulib's
+      dnl replacement.
+      REPLACE_MBSRTOWCS=1
+    fi
+  else
+    if test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_MBSRTOWCS=1
+    else
+      gl_MBSRTOWCS_WORKS
+      case "$gl_cv_func_mbsrtowcs_works" in
+        *yes) ;;
+        *) REPLACE_MBSRTOWCS=1 ;;
+      esac
+    fi
+  fi
+])
+
+dnl Test whether mbsrtowcs works.
+dnl Result is gl_cv_func_mbsrtowcs_works.
+
+AC_DEFUN([gl_MBSRTOWCS_WORKS],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gt_LOCALE_FR])
+  AC_REQUIRE([gt_LOCALE_FR_UTF8])
+  AC_REQUIRE([gt_LOCALE_JA])
+  AC_REQUIRE([gt_LOCALE_ZH_CN])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbsrtowcs works],
+    [gl_cv_func_mbsrtowcs_works],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+                                   # Guess no on HP-UX, Solaris, mingw.
+        hpux* | solaris* | mingw*) gl_cv_func_mbsrtowcs_works="guessing no" ;;
+                                   # Guess yes otherwise.
+        *)                         gl_cv_func_mbsrtowcs_works="guessing yes" ;;
+      esac
+changequote([,])dnl
+      if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  int result = 0;
+  /* Test whether the function supports a NULL destination argument.
+     This fails on native Windows.  */
+  if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+    {
+      const char input[] = "\337er";
+      const char *src = input;
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbsrtowcs (NULL, &src, 1, &state) != 3
+          || src != input)
+        result |= 1;
+    }
+  /* Test whether the function works when started with a conversion state
+     in non-initial state.  This fails on HP-UX 11.11 and Solaris 10.  */
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      const char input[] = "B\303\274\303\237er";
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2))
+        if (!mbsinit (&state))
+          {
+            const char *src = input + 2;
+            if (mbsrtowcs (NULL, &src, 10, &state) != 4)
+              result |= 2;
+          }
+    }
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      const char input[] = "<\306\374\313\334\270\354>";
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (NULL, input + 3, 1, &state) == (size_t)(-2))
+        if (!mbsinit (&state))
+          {
+            const char *src = input + 4;
+            if (mbsrtowcs (NULL, &src, 10, &state) != 3)
+              result |= 4;
+          }
+    }
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      const char input[] = "B\250\271\201\060\211\070er";
+      mbstate_t state;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2))
+        if (!mbsinit (&state))
+          {
+            const char *src = input + 2;
+            if (mbsrtowcs (NULL, &src, 10, &state) != 4)
+              result |= 8;
+          }
+    }
+  return result;
+}]])],
+          [gl_cv_func_mbsrtowcs_works=yes],
+          [gl_cv_func_mbsrtowcs_works=no],
+          [:])
+      fi
+    ])
+])
+
+# Prerequisites of lib/mbsrtowcs.c.
+AC_DEFUN([gl_PREREQ_MBSRTOWCS], [
+  :
+])
diff --git a/src/grep/m4/mbstate_t.m4 b/src/grep/m4/mbstate_t.m4
new file mode 100644
index 0000000..e7fe358
--- /dev/null
+++ b/src/grep/m4/mbstate_t.m4
@@ -0,0 +1,34 @@
+# mbstate_t.m4 serial 14
+dnl Copyright (C) 2000-2002, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# From Paul Eggert.
+
+# BeOS 5 has <wchar.h> but does not define mbstate_t,
+# so you can't declare an object of that type.
+# Check for this incompatibility with Standard C.
+
+# AC_TYPE_MBSTATE_T
+# -----------------
+AC_DEFUN([AC_TYPE_MBSTATE_T],
+[
+   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) dnl for HP-UX 11.11
+
+   AC_CACHE_CHECK([for mbstate_t], [ac_cv_type_mbstate_t],
+     [AC_COMPILE_IFELSE(
+        [AC_LANG_PROGRAM(
+           [AC_INCLUDES_DEFAULT[
+             #include <wchar.h>]],
+           [[mbstate_t x; return sizeof x;]])],
+        [ac_cv_type_mbstate_t=yes],
+        [ac_cv_type_mbstate_t=no])])
+   if test $ac_cv_type_mbstate_t = yes; then
+     AC_DEFINE([HAVE_MBSTATE_T], [1],
+               [Define to 1 if <wchar.h> declares mbstate_t.])
+   else
+     AC_DEFINE([mbstate_t], [int],
+               [Define to a type if <wchar.h> does not define.])
+   fi
+])
diff --git a/src/grep/m4/mbtowc.m4 b/src/grep/m4/mbtowc.m4
new file mode 100644
index 0000000..7fc74c9
--- /dev/null
+++ b/src/grep/m4/mbtowc.m4
@@ -0,0 +1,24 @@
+# mbtowc.m4 serial 3
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_MBTOWC],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+
+  AC_CHECK_FUNCS([mbtowc])
+  if test $ac_cv_func_mbtowc = no; then
+    HAVE_MBTOWC=0
+  else
+    if false; then
+      REPLACE_MBTOWC=1
+    fi
+  fi
+])
+
+# Prerequisites of lib/mbtowc.c.
+AC_DEFUN([gl_PREREQ_MBTOWC], [
+  :
+])
diff --git a/src/grep/m4/memchr.m4 b/src/grep/m4/memchr.m4
new file mode 100644
index 0000000..ca08192
--- /dev/null
+++ b/src/grep/m4/memchr.m4
@@ -0,0 +1,106 @@
+# memchr.m4 serial 18
+dnl Copyright (C) 2002-2004, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_FUNC_MEMCHR],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  dnl Check for prerequisites for memory fence checks.
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+  # Detect platform-specific bugs in some versions of glibc:
+  # memchr should not dereference anything with length 0
+  #   https://bugzilla.redhat.com/show_bug.cgi?id=499689
+  # memchr should not dereference overestimated length after a match
+  #   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=521737
+  #   https://sourceware.org/bugzilla/show_bug.cgi?id=10162
+  # memchr should cast the second argument to 'unsigned char'.
+  #   This bug exists in Android 4.3.
+  # Assume that memchr works on platforms that lack mprotect.
+  AC_CACHE_CHECK([whether memchr works], [gl_cv_func_memchr_works],
+    [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+#include <string.h>
+#if HAVE_SYS_MMAN_H
+# include <fcntl.h>
+# include <unistd.h>
+# include <sys/types.h>
+# include <sys/mman.h>
+# ifndef MAP_FILE
+#  define MAP_FILE 0
+# endif
+#endif
+]], [[
+  int result = 0;
+  char *fence = NULL;
+#if HAVE_SYS_MMAN_H && HAVE_MPROTECT
+# if HAVE_MAP_ANONYMOUS
+  const int flags = MAP_ANONYMOUS | MAP_PRIVATE;
+  const int fd = -1;
+# else /* !HAVE_MAP_ANONYMOUS */
+  const int flags = MAP_FILE | MAP_PRIVATE;
+  int fd = open ("/dev/zero", O_RDONLY, 0666);
+  if (fd >= 0)
+# endif
+    {
+      int pagesize = getpagesize ();
+      char *two_pages =
+        (char *) mmap (NULL, 2 * pagesize, PROT_READ | PROT_WRITE,
+                       flags, fd, 0);
+      if (two_pages != (char *)(-1)
+          && mprotect (two_pages + pagesize, pagesize, PROT_NONE) == 0)
+        fence = two_pages + pagesize;
+    }
+#endif
+  if (fence)
+    {
+      /* Test against bugs on glibc systems.  */
+      if (memchr (fence, 0, 0))
+        result |= 1;
+      strcpy (fence - 9, "12345678");
+      if (memchr (fence - 9, 0, 79) != fence - 1)
+        result |= 2;
+      if (memchr (fence - 1, 0, 3) != fence - 1)
+        result |= 4;
+      /* Test against bug on AIX 7.2.  */
+      if (memchr (fence - 4, '6', 16) != fence - 4)
+        result |= 8;
+    }
+  /* Test against bug on Android 4.3.  */
+  {
+    char input[3];
+    input[0] = 'a';
+    input[1] = 'b';
+    input[2] = 'c';
+    if (memchr (input, 0x789abc00 | 'b', 3) != input + 1)
+      result |= 16;
+  }
+  return result;
+]])],
+       [gl_cv_func_memchr_works=yes],
+       [gl_cv_func_memchr_works=no],
+       [case "$host_os" in
+                           # Guess no on Android.
+          linux*-android*) gl_cv_func_memchr_works="guessing no" ;;
+                           # Guess yes on native Windows.
+          mingw*)          gl_cv_func_memchr_works="guessing yes" ;;
+                           # If we don't know, obey --enable-cross-guesses.
+          *)               gl_cv_func_memchr_works="$gl_cross_guess_normal" ;;
+        esac
+       ])
+    ])
+  case "$gl_cv_func_memchr_works" in
+    *yes) ;;
+    *) REPLACE_MEMCHR=1 ;;
+  esac
+])
+
+# Prerequisites of lib/memchr.c.
+AC_DEFUN([gl_PREREQ_MEMCHR], [
+  AC_CHECK_HEADERS([bp-sym.h])
+])
diff --git a/src/grep/m4/mempcpy.m4 b/src/grep/m4/mempcpy.m4
new file mode 100644
index 0000000..f9d9ec8
--- /dev/null
+++ b/src/grep/m4/mempcpy.m4
@@ -0,0 +1,26 @@
+# mempcpy.m4 serial 12
+dnl Copyright (C) 2003-2004, 2006-2007, 2009-2021 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_MEMPCPY],
+[
+  dnl Persuade glibc <string.h> to declare mempcpy().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  dnl The mempcpy() declaration in lib/string.in.h uses 'restrict'.
+  AC_REQUIRE([AC_C_RESTRICT])
+
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+  AC_CHECK_FUNCS([mempcpy])
+  if test $ac_cv_func_mempcpy = no; then
+    HAVE_MEMPCPY=0
+  fi
+])
+
+# Prerequisites of lib/mempcpy.c.
+AC_DEFUN([gl_PREREQ_MEMPCPY], [
+  :
+])
diff --git a/src/grep/m4/memrchr.m4 b/src/grep/m4/memrchr.m4
new file mode 100644
index 0000000..40f61c5
--- /dev/null
+++ b/src/grep/m4/memrchr.m4
@@ -0,0 +1,23 @@
+# memrchr.m4 serial 11
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2021 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_MEMRCHR],
+[
+  dnl Persuade glibc <string.h> to declare memrchr().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+  AC_CHECK_DECLS_ONCE([memrchr])
+  if test $ac_cv_have_decl_memrchr = no; then
+    HAVE_DECL_MEMRCHR=0
+  fi
+
+  AC_CHECK_FUNCS([memrchr])
+])
+
+# Prerequisites of lib/memrchr.c.
+AC_DEFUN([gl_PREREQ_MEMRCHR], [:])
diff --git a/src/grep/m4/minmax.m4 b/src/grep/m4/minmax.m4
new file mode 100644
index 0000000..e21a687
--- /dev/null
+++ b/src/grep/m4/minmax.m4
@@ -0,0 +1,44 @@
+# minmax.m4 serial 4
+dnl Copyright (C) 2005, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_PREREQ([2.53])
+
+AC_DEFUN([gl_MINMAX],
+[
+  AC_REQUIRE([gl_PREREQ_MINMAX])
+])
+
+# Prerequisites of lib/minmax.h.
+AC_DEFUN([gl_PREREQ_MINMAX],
+[
+  gl_MINMAX_IN_HEADER([limits.h])
+  gl_MINMAX_IN_HEADER([sys/param.h])
+])
+
+dnl gl_MINMAX_IN_HEADER(HEADER)
+dnl The parameter has to be a literal header name; it cannot be macro,
+dnl nor a shell variable. (Because autoheader collects only AC_DEFINE
+dnl invocations with a literal macro name.)
+AC_DEFUN([gl_MINMAX_IN_HEADER],
+[
+  m4_pushdef([header], AS_TR_SH([$1]))
+  m4_pushdef([HEADER], AS_TR_CPP([$1]))
+  AC_CACHE_CHECK([whether <$1> defines MIN and MAX],
+    [gl_cv_minmax_in_]header,
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <$1>
+            int x = MIN (42, 17);]],
+          [[]])],
+       [gl_cv_minmax_in_]header[=yes],
+       [gl_cv_minmax_in_]header[=no])])
+  if test $gl_cv_minmax_in_[]header = yes; then
+    AC_DEFINE([HAVE_MINMAX_IN_]HEADER, 1,
+      [Define to 1 if <$1> defines the MIN and MAX macros.])
+  fi
+  m4_popdef([HEADER])
+  m4_popdef([header])
+])
diff --git a/src/grep/m4/mmap-anon.m4 b/src/grep/m4/mmap-anon.m4
new file mode 100644
index 0000000..e47aa2d
--- /dev/null
+++ b/src/grep/m4/mmap-anon.m4
@@ -0,0 +1,55 @@
+# mmap-anon.m4 serial 12
+dnl Copyright (C) 2005, 2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Detect how mmap can be used to create anonymous (not file-backed) memory
+# mappings.
+# - On Linux, AIX, OSF/1, Solaris, Cygwin, Interix, Haiku, both MAP_ANONYMOUS
+#   and MAP_ANON exist and have the same value.
+# - On HP-UX, only MAP_ANONYMOUS exists.
+# - On Mac OS X, FreeBSD, NetBSD, OpenBSD, Minix, only MAP_ANON exists.
+# - On IRIX, neither exists, and a file descriptor opened to /dev/zero must be
+#   used.
+
+AC_DEFUN_ONCE([gl_FUNC_MMAP_ANON],
+[
+  dnl Persuade glibc <sys/mman.h> to define MAP_ANONYMOUS.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  # Check for mmap(). Don't use AC_FUNC_MMAP, because it checks too much: it
+  # fails on HP-UX 11, because MAP_FIXED mappings do not work. But this is
+  # irrelevant for anonymous mappings.
+  AC_CHECK_FUNC([mmap], [gl_have_mmap=yes], [gl_have_mmap=no])
+
+  # Try to allow MAP_ANONYMOUS.
+  gl_have_mmap_anonymous=no
+  if test $gl_have_mmap = yes; then
+    AC_MSG_CHECKING([for MAP_ANONYMOUS])
+    AC_EGREP_CPP([I cannot identify this map], [
+#include <sys/mman.h>
+#ifdef MAP_ANONYMOUS
+    I cannot identify this map
+#endif
+],
+      [gl_have_mmap_anonymous=yes])
+    if test $gl_have_mmap_anonymous != yes; then
+      AC_EGREP_CPP([I cannot identify this map], [
+#include <sys/mman.h>
+#ifdef MAP_ANON
+    I cannot identify this map
+#endif
+],
+        [AC_DEFINE([MAP_ANONYMOUS], [MAP_ANON],
+          [Define to a substitute value for mmap()'s MAP_ANONYMOUS flag.])
+         gl_have_mmap_anonymous=yes])
+    fi
+    AC_MSG_RESULT([$gl_have_mmap_anonymous])
+    if test $gl_have_mmap_anonymous = yes; then
+      AC_DEFINE([HAVE_MAP_ANONYMOUS], [1],
+        [Define to 1 if mmap()'s MAP_ANONYMOUS flag is available after including
+         config.h and <sys/mman.h>.])
+    fi
+  fi
+])
diff --git a/src/grep/m4/mode_t.m4 b/src/grep/m4/mode_t.m4
new file mode 100644
index 0000000..3bd4b89
--- /dev/null
+++ b/src/grep/m4/mode_t.m4
@@ -0,0 +1,26 @@
+# mode_t.m4 serial 2
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# For using mode_t, it's sufficient to use AC_TYPE_MODE_T and
+# include <sys/types.h>.
+
+# Define PROMOTED_MODE_T to the type that is the result of "default argument
+# promotion" (ISO C 6.5.2.2.(6)) of the type mode_t.
+AC_DEFUN([gl_PROMOTED_TYPE_MODE_T],
+[
+  AC_REQUIRE([AC_TYPE_MODE_T])
+  AC_CACHE_CHECK([for promoted mode_t type], [gl_cv_promoted_mode_t], [
+    dnl Assume mode_t promotes to 'int' if and only if it is smaller than 'int',
+    dnl and to itself otherwise. This assumption is not guaranteed by the ISO C
+    dnl standard, but we don't know of any real-world counterexamples.
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>]],
+      [[typedef int array[2 * (sizeof (mode_t) < sizeof (int)) - 1];]])],
+      [gl_cv_promoted_mode_t='int'],
+      [gl_cv_promoted_mode_t='mode_t'])
+  ])
+  AC_DEFINE_UNQUOTED([PROMOTED_MODE_T], [$gl_cv_promoted_mode_t],
+    [Define to the type that is the result of default argument promotions of type mode_t.])
+])
diff --git a/src/grep/m4/msvc-inval.m4 b/src/grep/m4/msvc-inval.m4
new file mode 100644
index 0000000..3ba5b4e
--- /dev/null
+++ b/src/grep/m4/msvc-inval.m4
@@ -0,0 +1,19 @@
+# msvc-inval.m4 serial 1
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_MSVC_INVAL],
+[
+  AC_CHECK_FUNCS_ONCE([_set_invalid_parameter_handler])
+  if test $ac_cv_func__set_invalid_parameter_handler = yes; then
+    HAVE_MSVC_INVALID_PARAMETER_HANDLER=1
+    AC_DEFINE([HAVE_MSVC_INVALID_PARAMETER_HANDLER], [1],
+      [Define to 1 on MSVC platforms that have the "invalid parameter handler"
+       concept.])
+  else
+    HAVE_MSVC_INVALID_PARAMETER_HANDLER=0
+  fi
+  AC_SUBST([HAVE_MSVC_INVALID_PARAMETER_HANDLER])
+])
diff --git a/src/grep/m4/msvc-nothrow.m4 b/src/grep/m4/msvc-nothrow.m4
new file mode 100644
index 0000000..aae25ce
--- /dev/null
+++ b/src/grep/m4/msvc-nothrow.m4
@@ -0,0 +1,10 @@
+# msvc-nothrow.m4 serial 1
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_MSVC_NOTHROW],
+[
+  AC_REQUIRE([gl_MSVC_INVAL])
+])
diff --git a/src/grep/m4/multiarch.m4 b/src/grep/m4/multiarch.m4
new file mode 100644
index 0000000..f1678d9
--- /dev/null
+++ b/src/grep/m4/multiarch.m4
@@ -0,0 +1,65 @@
+# multiarch.m4 serial 9
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Determine whether the compiler is or may be producing universal binaries.
+#
+# On Mac OS X 10.5 and later systems, the user can create libraries and
+# executables that work on multiple system types--known as "fat" or
+# "universal" binaries--by specifying multiple '-arch' options to the
+# compiler but only a single '-arch' option to the preprocessor.  Like
+# this:
+#
+#     ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+#                 CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+#                 CPP="gcc -E" CXXCPP="g++ -E"
+#
+# Detect this situation and set APPLE_UNIVERSAL_BUILD accordingly.
+
+AC_DEFUN_ONCE([gl_MULTIARCH],
+[
+  dnl Code similar to autoconf-2.63 AC_C_BIGENDIAN.
+  AC_CACHE_CHECK([whether the compiler produces multi-arch binaries],
+    [gl_cv_c_multiarch],
+    [gl_cv_c_multiarch=no
+     AC_COMPILE_IFELSE(
+       [AC_LANG_SOURCE(
+         [[#ifndef __APPLE_CC__
+            not a universal capable compiler
+           #endif
+           typedef int dummy;
+         ]])],
+       [
+        dnl Check for potential -arch flags.  It is not universal unless
+        dnl there are at least two -arch flags with different values.
+        arch=
+        prev=
+        for word in ${CC} ${CFLAGS} ${CPPFLAGS} ${LDFLAGS}; do
+          if test -n "$prev"; then
+            case $word in
+              i?86 | x86_64 | ppc | ppc64 | arm | arm64)
+                if test -z "$arch" || test "$arch" = "$word"; then
+                  arch="$word"
+                else
+                  gl_cv_c_multiarch=yes
+                fi
+                ;;
+            esac
+            prev=
+          else
+            if test "x$word" = "x-arch"; then
+              prev=arch
+            fi
+          fi
+        done
+       ])
+    ])
+  if test $gl_cv_c_multiarch = yes; then
+    APPLE_UNIVERSAL_BUILD=1
+  else
+    APPLE_UNIVERSAL_BUILD=0
+  fi
+  AC_SUBST([APPLE_UNIVERSAL_BUILD])
+])
diff --git a/src/grep/m4/musl.m4 b/src/grep/m4/musl.m4
new file mode 100644
index 0000000..60bd62a
--- /dev/null
+++ b/src/grep/m4/musl.m4
@@ -0,0 +1,18 @@
+# musl.m4 serial 3
+dnl Copyright (C) 2019-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Test for musl libc, despite the musl libc authors don't like it
+# <https://wiki.musl-libc.org/faq.html>
+# <https://lists.gnu.org/archive/html/bug-gnulib/2018-02/msg00079.html>.
+# From Bruno Haible.
+
+AC_DEFUN_ONCE([gl_MUSL_LIBC],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    *-musl*) AC_DEFINE([MUSL_LIBC], [1], [Define to 1 on musl libc.]) ;;
+  esac
+])
diff --git a/src/grep/m4/nanosleep.m4 b/src/grep/m4/nanosleep.m4
new file mode 100644
index 0000000..baebe88
--- /dev/null
+++ b/src/grep/m4/nanosleep.m4
@@ -0,0 +1,161 @@
+# serial 40
+
+dnl From Jim Meyering.
+dnl Check for the nanosleep function.
+dnl If not found, use the supplied replacement.
+dnl
+
+# Copyright (C) 1999-2001, 2003-2021 Free Software Foundation, Inc.
+
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_NANOSLEEP],
+[
+ AC_REQUIRE([gl_TIME_H_DEFAULTS])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+ dnl Persuade glibc and Solaris <time.h> to declare nanosleep.
+ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+ AC_CHECK_HEADERS_ONCE([sys/time.h])
+ AC_REQUIRE([gl_FUNC_SELECT])
+
+ AC_CHECK_DECLS_ONCE([alarm])
+
+ nanosleep_save_libs=$LIBS
+
+ # Solaris 2.5.1 needs -lposix4 to get the nanosleep function.
+ # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
+ LIB_NANOSLEEP=
+ AC_SUBST([LIB_NANOSLEEP])
+ AC_SEARCH_LIBS([nanosleep], [rt posix4],
+                [test "$ac_cv_search_nanosleep" = "none required" ||
+                 LIB_NANOSLEEP=$ac_cv_search_nanosleep])
+ if test "x$ac_cv_search_nanosleep" != xno; then
+   dnl The system has a nanosleep function.
+
+   AC_REQUIRE([gl_MULTIARCH])
+   if test $APPLE_UNIVERSAL_BUILD = 1; then
+     # A universal build on Apple Mac OS X platforms.
+     # The test result would be 'no (mishandles large arguments)' in 64-bit
+     # mode but 'yes' in 32-bit mode. But we need a configuration result that
+     # is valid in both modes.
+     gl_cv_func_nanosleep='no (mishandles large arguments)'
+   fi
+
+   AC_CACHE_CHECK([for working nanosleep],
+    [gl_cv_func_nanosleep],
+    [
+     AC_RUN_IFELSE(
+       [AC_LANG_SOURCE([[
+          #include <errno.h>
+          #include <limits.h>
+          #include <signal.h>
+          #if HAVE_SYS_TIME_H
+           #include <sys/time.h>
+          #endif
+          #include <time.h>
+          #include <unistd.h>
+          #define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+          #define TYPE_MAXIMUM(t) \
+            ((t) (! TYPE_SIGNED (t) \
+                  ? (t) -1 \
+                  : ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1)))
+
+          #if HAVE_DECL_ALARM
+          static void
+          check_for_SIGALRM (int sig)
+          {
+            if (sig != SIGALRM)
+              _exit (1);
+          }
+          #endif
+
+          int
+          main ()
+          {
+            static struct timespec ts_sleep;
+            static struct timespec ts_remaining;
+            /* Test for major problems first.  */
+            if (! nanosleep)
+              return 2;
+            ts_sleep.tv_sec = 0;
+            ts_sleep.tv_nsec = 1;
+            #if HAVE_DECL_ALARM
+            {
+              static struct sigaction act;
+              act.sa_handler = check_for_SIGALRM;
+              sigemptyset (&act.sa_mask);
+              sigaction (SIGALRM, &act, NULL);
+              alarm (1);
+              if (nanosleep (&ts_sleep, NULL) != 0)
+                return 3;
+              /* Test for a minor problem: the handling of large arguments.  */
+              ts_sleep.tv_sec = TYPE_MAXIMUM (time_t);
+              ts_sleep.tv_nsec = 999999999;
+              alarm (1);
+              if (nanosleep (&ts_sleep, &ts_remaining) != -1)
+                return 4;
+              if (errno != EINTR)
+                return 5;
+              if (ts_remaining.tv_sec <= TYPE_MAXIMUM (time_t) - 10)
+                return 6;
+            }
+            #else /* A simpler test for native Windows.  */
+            if (nanosleep (&ts_sleep, &ts_remaining) < 0)
+              return 3;
+            #endif
+            return 0;
+          }]])],
+       [gl_cv_func_nanosleep=yes],
+       [case $? in dnl (
+        4|5|6) gl_cv_func_nanosleep='no (mishandles large arguments)';; dnl (
+        *)   gl_cv_func_nanosleep=no;;
+        esac],
+       [case "$host_os" in dnl ((
+          linux*) # Guess it halfway works when the kernel is Linux.
+            gl_cv_func_nanosleep='guessing no (mishandles large arguments)' ;;
+          mingw*) # Guess no on native Windows.
+            gl_cv_func_nanosleep='guessing no' ;;
+          *)      # If we don't know, obey --enable-cross-guesses.
+            gl_cv_func_nanosleep="$gl_cross_guess_normal" ;;
+        esac
+       ])
+    ])
+   case "$gl_cv_func_nanosleep" in
+     *yes)
+       REPLACE_NANOSLEEP=0
+       ;;
+     *)
+       REPLACE_NANOSLEEP=1
+       case "$gl_cv_func_nanosleep" in
+         *"mishandles large arguments"*)
+           AC_DEFINE([HAVE_BUG_BIG_NANOSLEEP], [1],
+             [Define to 1 if nanosleep mishandles large arguments.])
+           ;;
+         *)
+           # The replacement uses select(). Add $LIBSOCKET to $LIB_NANOSLEEP.
+           for ac_lib in $LIBSOCKET; do
+             case " $LIB_NANOSLEEP " in
+               *" $ac_lib "*) ;;
+               *) LIB_NANOSLEEP="$LIB_NANOSLEEP $ac_lib";;
+             esac
+           done
+           ;;
+       esac
+       ;;
+   esac
+ else
+   HAVE_NANOSLEEP=0
+ fi
+ LIBS=$nanosleep_save_libs
+])
+
+# Prerequisites of lib/nanosleep.c.
+AC_DEFUN([gl_PREREQ_NANOSLEEP],
+[
+  AC_CHECK_HEADERS_ONCE([sys/select.h])
+  gl_PREREQ_SIG_HANDLER_H
+])
diff --git a/src/grep/m4/netinet_in_h.m4 b/src/grep/m4/netinet_in_h.m4
new file mode 100644
index 0000000..c555596
--- /dev/null
+++ b/src/grep/m4/netinet_in_h.m4
@@ -0,0 +1,31 @@
+# netinet_in_h.m4 serial 5
+dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_HEADER_NETINET_IN],
+[
+  AC_CACHE_CHECK([whether <netinet/in.h> is self-contained],
+    [gl_cv_header_netinet_in_h_selfcontained],
+    [
+      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>]], [[]])],
+        [gl_cv_header_netinet_in_h_selfcontained=yes],
+        [gl_cv_header_netinet_in_h_selfcontained=no])
+    ])
+  if test $gl_cv_header_netinet_in_h_selfcontained = yes; then
+    NETINET_IN_H=''
+  else
+    NETINET_IN_H='netinet/in.h'
+    AC_CHECK_HEADERS([netinet/in.h])
+    gl_CHECK_NEXT_HEADERS([netinet/in.h])
+    if test $ac_cv_header_netinet_in_h = yes; then
+      HAVE_NETINET_IN_H=1
+    else
+      HAVE_NETINET_IN_H=0
+    fi
+    AC_SUBST([HAVE_NETINET_IN_H])
+  fi
+  AC_SUBST([NETINET_IN_H])
+  AM_CONDITIONAL([GL_GENERATE_NETINET_IN_H], [test -n "$NETINET_IN_H"])
+])
diff --git a/src/grep/m4/nl_langinfo.m4 b/src/grep/m4/nl_langinfo.m4
new file mode 100644
index 0000000..6ad32c8
--- /dev/null
+++ b/src/grep/m4/nl_langinfo.m4
@@ -0,0 +1,77 @@
+# nl_langinfo.m4 serial 8
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_NL_LANGINFO],
+[
+  AC_REQUIRE([gl_LANGINFO_H_DEFAULTS])
+  AC_REQUIRE([gl_LANGINFO_H])
+  AC_CHECK_FUNCS_ONCE([nl_langinfo])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_FUNC_SETLOCALE_NULL])
+  AC_REQUIRE([gl_PTHREADLIB])
+  AC_CHECK_HEADERS_ONCE([threads.h])
+  if test $ac_cv_func_nl_langinfo = yes; then
+    # On Irix 6.5, YESEXPR is defined, but nl_langinfo(YESEXPR) is broken.
+    AC_CACHE_CHECK([whether YESEXPR works],
+      [gl_cv_func_nl_langinfo_yesexpr_works],
+      [AC_RUN_IFELSE(
+         [AC_LANG_PROGRAM([[#include <langinfo.h>
+]], [[return !*nl_langinfo(YESEXPR);
+]])],
+         [gl_cv_func_nl_langinfo_yesexpr_works=yes],
+         [gl_cv_func_nl_langinfo_yesexpr_works=no],
+         [
+         case "$host_os" in
+                   # Guess no on irix systems.
+           irix*)  gl_cv_func_nl_langinfo_yesexpr_works="guessing no";;
+                   # Guess yes elsewhere.
+           *)      gl_cv_func_nl_langinfo_yesexpr_works="guessing yes";;
+         esac
+         ])
+      ])
+    case $gl_cv_func_nl_langinfo_yesexpr_works in
+      *yes) FUNC_NL_LANGINFO_YESEXPR_WORKS=1 ;;
+      *)    FUNC_NL_LANGINFO_YESEXPR_WORKS=0 ;;
+    esac
+    AC_DEFINE_UNQUOTED([FUNC_NL_LANGINFO_YESEXPR_WORKS],
+      [$FUNC_NL_LANGINFO_YESEXPR_WORKS],
+      [Define to 1 if nl_langinfo (YESEXPR) returns a non-empty string.])
+    # On Solaris 10 and Solaris 11.3, nl_langinfo is not multithread-safe.
+    case "$host_os" in
+      solaris*) NL_LANGINFO_MTSAFE=0 ;;
+      *)        NL_LANGINFO_MTSAFE=1 ;;
+    esac
+    AC_DEFINE_UNQUOTED([NL_LANGINFO_MTSAFE], [$NL_LANGINFO_MTSAFE],
+      [Define to 1 if nl_langinfo is multithread-safe.])
+    if test $HAVE_LANGINFO_CODESET = 1 \
+       && test $HAVE_LANGINFO_T_FMT_AMPM = 1 \
+       && test $HAVE_LANGINFO_ALTMON = 1 \
+       && test $HAVE_LANGINFO_ERA = 1 \
+       && test $FUNC_NL_LANGINFO_YESEXPR_WORKS = 1 \
+       && test $NL_LANGINFO_MTSAFE = 1; then
+      :
+    else
+      REPLACE_NL_LANGINFO=1
+      AC_DEFINE([REPLACE_NL_LANGINFO], [1],
+        [Define if nl_langinfo exists but is overridden by gnulib.])
+    fi
+  else
+    HAVE_NL_LANGINFO=0
+  fi
+  if test $HAVE_NL_LANGINFO = 0 || test $HAVE_LANGINFO_CODESET = 0; then
+    LIB_NL_LANGINFO="$LIB_SETLOCALE_NULL"
+  else
+    LIB_NL_LANGINFO=
+  fi
+  dnl LIB_NL_LANGINFO is expected to be empty everywhere.
+  AC_SUBST([LIB_NL_LANGINFO])
+])
+
+# Prerequisites of lib/nl_langinfo-lock.c.
+AC_DEFUN([gl_PREREQ_NL_LANGINFO_LOCK],
+[
+  gl_VISIBILITY
+])
diff --git a/src/grep/m4/nls.m4 b/src/grep/m4/nls.m4
new file mode 100644
index 0000000..8f8a147
--- /dev/null
+++ b/src/grep/m4/nls.m4
@@ -0,0 +1,32 @@
+# nls.m4 serial 5 (gettext-0.18)
+dnl Copyright (C) 1995-2003, 2005-2006, 2008-2013 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2003.
+
+AC_PREREQ([2.50])
+
+AC_DEFUN([AM_NLS],
+[
+  AC_MSG_CHECKING([whether NLS is requested])
+  dnl Default is enabled NLS
+  AC_ARG_ENABLE([nls],
+    [  --disable-nls           do not use Native Language Support],
+    USE_NLS=$enableval, USE_NLS=yes)
+  AC_MSG_RESULT([$USE_NLS])
+  AC_SUBST([USE_NLS])
+])
diff --git a/src/grep/m4/nocrash.m4 b/src/grep/m4/nocrash.m4
new file mode 100644
index 0000000..27412cd
--- /dev/null
+++ b/src/grep/m4/nocrash.m4
@@ -0,0 +1,131 @@
+# nocrash.m4 serial 5
+dnl Copyright (C) 2005, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Based on libsigsegv, from Bruno Haible and Paolo Bonzini.
+
+AC_PREREQ([2.13])
+
+dnl Expands to some code for use in .c programs that will cause the configure
+dnl test to exit instead of crashing. This is useful to avoid triggering
+dnl action from a background debugger and to avoid core dumps.
+dnl Usage:   ...
+dnl          ]GL_NOCRASH[
+dnl          ...
+dnl          int main() { nocrash_init(); ... }
+AC_DEFUN([GL_NOCRASH],[[
+#include <stdlib.h>
+#if defined __MACH__ && defined __APPLE__
+/* Avoid a crash on Mac OS X.  */
+#include <mach/mach.h>
+#include <mach/mach_error.h>
+#include <mach/thread_status.h>
+#include <mach/exception.h>
+#include <mach/task.h>
+#include <pthread.h>
+/* The exception port on which our thread listens.  */
+static mach_port_t our_exception_port;
+/* The main function of the thread listening for exceptions of type
+   EXC_BAD_ACCESS.  */
+static void *
+mach_exception_thread (void *arg)
+{
+  /* Buffer for a message to be received.  */
+  struct {
+    mach_msg_header_t head;
+    mach_msg_body_t msgh_body;
+    char data[1024];
+  } msg;
+  mach_msg_return_t retval;
+  /* Wait for a message on the exception port.  */
+  retval = mach_msg (&msg.head, MACH_RCV_MSG | MACH_RCV_LARGE, 0, sizeof (msg),
+                     our_exception_port, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
+  if (retval != MACH_MSG_SUCCESS)
+    abort ();
+  exit (1);
+}
+static void
+nocrash_init (void)
+{
+  mach_port_t self = mach_task_self ();
+  /* Allocate a port on which the thread shall listen for exceptions.  */
+  if (mach_port_allocate (self, MACH_PORT_RIGHT_RECEIVE, &our_exception_port)
+      == KERN_SUCCESS) {
+    /* See https://web.mit.edu/darwin/src/modules/xnu/osfmk/man/mach_port_insert_right.html.  */
+    if (mach_port_insert_right (self, our_exception_port, our_exception_port,
+                                MACH_MSG_TYPE_MAKE_SEND)
+        == KERN_SUCCESS) {
+      /* The exceptions we want to catch.  Only EXC_BAD_ACCESS is interesting
+         for us.  */
+      exception_mask_t mask = EXC_MASK_BAD_ACCESS;
+      /* Create the thread listening on the exception port.  */
+      pthread_attr_t attr;
+      pthread_t thread;
+      if (pthread_attr_init (&attr) == 0
+          && pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED) == 0
+          && pthread_create (&thread, &attr, mach_exception_thread, NULL) == 0) {
+        pthread_attr_destroy (&attr);
+        /* Replace the exception port info for these exceptions with our own.
+           Note that we replace the exception port for the entire task, not only
+           for a particular thread.  This has the effect that when our exception
+           port gets the message, the thread specific exception port has already
+           been asked, and we don't need to bother about it.
+           See https://web.mit.edu/darwin/src/modules/xnu/osfmk/man/task_set_exception_ports.html.  */
+        task_set_exception_ports (self, mask, our_exception_port,
+                                  EXCEPTION_DEFAULT, MACHINE_THREAD_STATE);
+      }
+    }
+  }
+}
+#elif defined _WIN32 && ! defined __CYGWIN__
+/* Avoid a crash on native Windows.  */
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <winerror.h>
+static LONG WINAPI
+exception_filter (EXCEPTION_POINTERS *ExceptionInfo)
+{
+  switch (ExceptionInfo->ExceptionRecord->ExceptionCode)
+    {
+    case EXCEPTION_ACCESS_VIOLATION:
+    case EXCEPTION_IN_PAGE_ERROR:
+    case EXCEPTION_STACK_OVERFLOW:
+    case EXCEPTION_GUARD_PAGE:
+    case EXCEPTION_PRIV_INSTRUCTION:
+    case EXCEPTION_ILLEGAL_INSTRUCTION:
+    case EXCEPTION_DATATYPE_MISALIGNMENT:
+    case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
+    case EXCEPTION_NONCONTINUABLE_EXCEPTION:
+      exit (1);
+    }
+  return EXCEPTION_CONTINUE_SEARCH;
+}
+static void
+nocrash_init (void)
+{
+  SetUnhandledExceptionFilter ((LPTOP_LEVEL_EXCEPTION_FILTER) exception_filter);
+}
+#else
+/* Avoid a crash on POSIX systems.  */
+#include <signal.h>
+#include <unistd.h>
+/* A POSIX signal handler.  */
+static void
+exception_handler (int sig)
+{
+  _exit (1);
+}
+static void
+nocrash_init (void)
+{
+#ifdef SIGSEGV
+  signal (SIGSEGV, exception_handler);
+#endif
+#ifdef SIGBUS
+  signal (SIGBUS, exception_handler);
+#endif
+}
+#endif
+]])
diff --git a/src/grep/m4/obstack.m4 b/src/grep/m4/obstack.m4
new file mode 100644
index 0000000..e363d01
--- /dev/null
+++ b/src/grep/m4/obstack.m4
@@ -0,0 +1,35 @@
+# See if we need to provide obstacks.
+
+dnl Copyright 1996-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl This replaces Autoconf's AC_FUNC_OBSTACK.
+dnl The Autoconf version should be marked obsolete at some point.
+
+AC_DEFUN([AC_FUNC_OBSTACK],
+  [AC_LIBSOURCES([obstack.h, obstack.c])dnl
+   AC_CACHE_CHECK([for obstacks that work with any size object],
+     [ac_cv_func_obstack],
+     [AC_LINK_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[#include "obstack.h"
+             void *obstack_chunk_alloc (size_t n) { return 0; }
+             void obstack_chunk_free (void *p) { }
+             /* Check that an internal function returns size_t, not int.  */
+             size_t _obstack_memory_used (struct obstack *);
+            ]],
+           [[struct obstack mem;
+             obstack_init (&mem);
+             obstack_free (&mem, 0);
+           ]])],
+        [ac_cv_func_obstack=yes],
+        [ac_cv_func_obstack=no])])
+   if test "$ac_cv_func_obstack" = yes; then
+     AC_DEFINE([HAVE_OBSTACK], 1,
+       [Define to 1 if the system has obstacks that work with any size object.])
+   else
+     AC_LIBOBJ([obstack])
+   fi
+])
diff --git a/src/grep/m4/off_t.m4 b/src/grep/m4/off_t.m4
new file mode 100644
index 0000000..bdec43c
--- /dev/null
+++ b/src/grep/m4/off_t.m4
@@ -0,0 +1,18 @@
+# off_t.m4 serial 1
+dnl Copyright (C) 2012-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Check whether to override the 'off_t' type.
+dnl Set WINDOWS_64_BIT_OFF_T.
+
+AC_DEFUN([gl_TYPE_OFF_T],
+[
+  m4_ifdef([gl_LARGEFILE], [
+    AC_REQUIRE([gl_LARGEFILE])
+  ], [
+    WINDOWS_64_BIT_OFF_T=0
+  ])
+  AC_SUBST([WINDOWS_64_BIT_OFF_T])
+])
diff --git a/src/grep/m4/open-cloexec.m4 b/src/grep/m4/open-cloexec.m4
new file mode 100644
index 0000000..542a90f
--- /dev/null
+++ b/src/grep/m4/open-cloexec.m4
@@ -0,0 +1,21 @@
+# Test whether O_CLOEXEC is defined.
+
+dnl Copyright 2017-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_PREPROC_O_CLOEXEC],
+[
+  AC_CACHE_CHECK([for O_CLOEXEC],
+    [gl_cv_macro_O_CLOEXEC],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM([[#include <fcntl.h>
+                          #ifndef O_CLOEXEC
+                            choke me;
+                          #endif
+                        ]],
+                        [[return O_CLOEXEC;]])],
+       [gl_cv_macro_O_CLOEXEC=yes],
+       [gl_cv_macro_O_CLOEXEC=no])])
+])
diff --git a/src/grep/m4/open-slash.m4 b/src/grep/m4/open-slash.m4
new file mode 100644
index 0000000..e619039
--- /dev/null
+++ b/src/grep/m4/open-slash.m4
@@ -0,0 +1,60 @@
+# open-slash.m4 serial 2
+dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Tests whether open() and creat() recognize a trailing slash.
+dnl Sets gl_cv_func_open_slash.
+AC_DEFUN([gl_OPEN_TRAILING_SLASH_BUG],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  dnl open("foo/") should not create a file when the file name has a
+  dnl trailing slash.  FreeBSD only has the problem on symlinks.
+  AC_CHECK_FUNCS_ONCE([lstat])
+  AC_CACHE_CHECK([whether open recognizes a trailing slash],
+    [gl_cv_func_open_slash],
+    [# Assume that if we have lstat, we can also check symlinks.
+     if test $ac_cv_func_lstat = yes; then
+       touch conftest.tmp
+       ln -s conftest.tmp conftest.lnk
+     fi
+     AC_RUN_IFELSE(
+       [AC_LANG_SOURCE([[
+#include <fcntl.h>
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+]GL_MDA_DEFINES[
+int main ()
+{
+  int result = 0;
+#if HAVE_LSTAT
+  if (open ("conftest.lnk/", O_RDONLY) != -1)
+    result |= 1;
+#endif
+  if (open ("conftest.sl/", O_CREAT, 0600) >= 0)
+    result |= 2;
+  return result;
+}]])],
+       [gl_cv_func_open_slash=yes],
+       [gl_cv_func_open_slash=no],
+       [
+changequote(,)dnl
+        case "$host_os" in
+          freebsd* | aix* | hpux* | solaris2.[0-9] | solaris2.[0-9].*)
+            gl_cv_func_open_slash="guessing no" ;;
+          *)
+            gl_cv_func_open_slash="guessing yes" ;;
+        esac
+changequote([,])dnl
+       ])
+     rm -f conftest.sl conftest.tmp conftest.lnk
+    ])
+  case "$gl_cv_func_open_slash" in
+    *no)
+      AC_DEFINE([OPEN_TRAILING_SLASH_BUG], [1],
+        [Define to 1 if open() fails to recognize a trailing slash.])
+      ;;
+  esac
+])
diff --git a/src/grep/m4/open.m4 b/src/grep/m4/open.m4
new file mode 100644
index 0000000..c634386
--- /dev/null
+++ b/src/grep/m4/open.m4
@@ -0,0 +1,56 @@
+# open.m4 serial 15
+dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_OPEN],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_PREPROC_O_CLOEXEC])
+  case "$host_os" in
+    mingw* | pw*)
+      REPLACE_OPEN=1
+      ;;
+    *)
+      dnl open("foo/") should not create a file when the file name has a
+      dnl trailing slash.  FreeBSD only has the problem on symlinks.
+      AC_CHECK_FUNCS_ONCE([lstat])
+      if test "$gl_cv_macro_O_CLOEXEC" != yes; then
+        REPLACE_OPEN=1
+      fi
+      gl_OPEN_TRAILING_SLASH_BUG
+      case "$gl_cv_func_open_slash" in
+        *no)
+          REPLACE_OPEN=1
+          ;;
+      esac
+      ;;
+  esac
+  dnl Replace open() for supporting the gnulib-defined fchdir() function,
+  dnl to keep fchdir's bookkeeping up-to-date.
+  m4_ifdef([gl_FUNC_FCHDIR], [
+    if test $REPLACE_OPEN = 0; then
+      gl_TEST_FCHDIR
+      if test $HAVE_FCHDIR = 0; then
+        REPLACE_OPEN=1
+      fi
+    fi
+  ])
+  dnl Replace open() for supporting the gnulib-defined O_NONBLOCK flag.
+  m4_ifdef([gl_NONBLOCKING_IO], [
+    if test $REPLACE_OPEN = 0; then
+      gl_NONBLOCKING_IO
+      if test $gl_cv_have_open_O_NONBLOCK != yes; then
+        REPLACE_OPEN=1
+      fi
+    fi
+  ])
+])
+
+# Prerequisites of lib/open.c.
+AC_DEFUN([gl_PREREQ_OPEN],
+[
+  AC_REQUIRE([gl_PROMOTED_TYPE_MODE_T])
+  :
+])
diff --git a/src/grep/m4/openat.m4 b/src/grep/m4/openat.m4
new file mode 100644
index 0000000..eba0f51
--- /dev/null
+++ b/src/grep/m4/openat.m4
@@ -0,0 +1,38 @@
+# serial 46
+# See if we need to use our replacement for Solaris' openat et al functions.
+
+dnl Copyright (C) 2004-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Written by Jim Meyering.
+
+AC_DEFUN([gl_FUNC_OPENAT],
+[
+  AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_CHECK_FUNCS_ONCE([openat])
+  AC_REQUIRE([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK])
+  AC_REQUIRE([gl_PREPROC_O_CLOEXEC])
+  case $ac_cv_func_openat+$gl_cv_func_lstat_dereferences_slashed_symlink+$gl_cv_macro_O_CLOEXEC in
+  yes+*yes+yes)
+    ;;
+  yes+*)
+    # Solaris 10 lacks O_CLOEXEC.
+    # Solaris 9 has *at functions, but uniformly mishandles trailing
+    # slash in all of them.
+    REPLACE_OPENAT=1
+    ;;
+  *)
+    HAVE_OPENAT=0
+    ;;
+  esac
+])
+
+# Prerequisites of lib/openat.c.
+AC_DEFUN([gl_PREREQ_OPENAT],
+[
+  AC_REQUIRE([gl_PROMOTED_TYPE_MODE_T])
+  :
+])
diff --git a/src/grep/m4/opendir.m4 b/src/grep/m4/opendir.m4
new file mode 100644
index 0000000..517edae
--- /dev/null
+++ b/src/grep/m4/opendir.m4
@@ -0,0 +1,32 @@
+# opendir.m4 serial 5
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_OPENDIR],
+[
+  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  AC_CHECK_FUNCS([opendir])
+  if test $ac_cv_func_opendir = no; then
+    HAVE_OPENDIR=0
+  fi
+  dnl Replace opendir() for supporting the gnulib-defined fchdir() function,
+  dnl to keep fchdir's bookkeeping up-to-date.
+  m4_ifdef([gl_FUNC_FCHDIR], [
+    gl_TEST_FCHDIR
+    if test $HAVE_FCHDIR = 0; then
+      if test $HAVE_OPENDIR = 1; then
+        REPLACE_OPENDIR=1
+      fi
+    fi
+  ])
+  dnl Replace opendir() on OS/2 kLIBC to support dirfd() function replaced
+  dnl by gnulib.
+  case $host_os,$HAVE_OPENDIR in
+    os2*,1)
+      REPLACE_OPENDIR=1;;
+  esac
+])
diff --git a/src/grep/m4/pathmax.m4 b/src/grep/m4/pathmax.m4
new file mode 100644
index 0000000..e67c656
--- /dev/null
+++ b/src/grep/m4/pathmax.m4
@@ -0,0 +1,42 @@
+# pathmax.m4 serial 11
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2021 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_PATHMAX],
+[
+  dnl Prerequisites of lib/pathmax.h.
+  AC_CHECK_HEADERS_ONCE([sys/param.h])
+])
+
+# Expands to a piece of C program that defines PATH_MAX in the same way as
+# "pathmax.h" will do.
+AC_DEFUN([gl_PATHMAX_SNIPPET], [[
+/* Arrange to define PATH_MAX, like "pathmax.h" does. */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <limits.h>
+#if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
+# include <sys/param.h>
+#endif
+#if !defined PATH_MAX && defined MAXPATHLEN
+# define PATH_MAX MAXPATHLEN
+#endif
+#ifdef __hpux
+# undef PATH_MAX
+# define PATH_MAX 1024
+#endif
+#if defined _WIN32 && ! defined __CYGWIN__
+# undef PATH_MAX
+# define PATH_MAX 260
+#endif
+]])
+
+# Prerequisites of gl_PATHMAX_SNIPPET.
+AC_DEFUN([gl_PATHMAX_SNIPPET_PREREQ],
+[
+  AC_CHECK_HEADERS_ONCE([unistd.h sys/param.h])
+])
diff --git a/src/grep/m4/pcre.m4 b/src/grep/m4/pcre.m4
new file mode 100644
index 0000000..78b7fda
--- /dev/null
+++ b/src/grep/m4/pcre.m4
@@ -0,0 +1,58 @@
+# pcre.m4 - check for libpcre support
+
+# Copyright (C) 2010-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_PCRE],
+[
+  AC_ARG_ENABLE([perl-regexp],
+    AS_HELP_STRING([--disable-perl-regexp],
+                   [disable perl-regexp (pcre) support]),
+    [case $enableval in
+       yes|no) test_pcre=$enableval;;
+       *) AC_MSG_ERROR([invalid value $enableval for --disable-perl-regexp]);;
+     esac],
+    [test_pcre=maybe])
+
+  AC_SUBST([PCRE_CFLAGS])
+  AC_SUBST([PCRE_LIBS])
+  use_pcre=no
+
+  if test $test_pcre != no; then
+    PKG_CHECK_MODULES([PCRE], [libpcre], [], [: ${PCRE_LIBS=-lpcre}])
+
+    AC_CACHE_CHECK([for pcre_compile], [pcre_cv_have_pcre_compile],
+      [pcre_saved_CFLAGS=$CFLAGS
+       pcre_saved_LIBS=$LIBS
+       CFLAGS="$CFLAGS $PCRE_CFLAGS"
+       LIBS="$PCRE_LIBS $LIBS"
+       AC_LINK_IFELSE(
+         [AC_LANG_PROGRAM([[#include <pcre.h>
+                          ]],
+            [[pcre *p = pcre_compile (0, 0, 0, 0, 0);
+              return !p;]])],
+         [pcre_cv_have_pcre_compile=yes],
+         [pcre_cv_have_pcre_compile=no])
+       CFLAGS=$pcre_saved_CFLAGS
+       LIBS=$pcre_saved_LIBS])
+
+    if test "$pcre_cv_have_pcre_compile" = yes; then
+      use_pcre=yes
+    elif test $test_pcre = maybe; then
+      AC_MSG_WARN([AC_PACKAGE_NAME will be built without pcre support.])
+    else
+      AC_MSG_ERROR([pcre support not available])
+    fi
+  fi
+
+  if test $use_pcre = yes; then
+    AC_DEFINE([HAVE_LIBPCRE], [1],
+      [Define to 1 if you have the Perl Compatible Regular Expressions
+       library (-lpcre).])
+  else
+    PCRE_CFLAGS=
+    PCRE_LIBS=
+  fi
+])
diff --git a/src/grep/m4/perl.m4 b/src/grep/m4/perl.m4
new file mode 100644
index 0000000..0d55101
--- /dev/null
+++ b/src/grep/m4/perl.m4
@@ -0,0 +1,46 @@
+# serial 10
+
+dnl From Jim Meyering.
+dnl Find a new-enough version of Perl.
+
+# Copyright (C) 1998-2001, 2003-2004, 2007, 2009-2021 Free Software Foundation,
+# Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_PERL],
+[
+  dnl FIXME: don't hard-code 5.005
+  AC_MSG_CHECKING([for perl5.005 or newer])
+  if test "${PERL+set}" = set; then
+    # 'PERL' is set in the user's environment.
+    candidate_perl_names="$PERL"
+    perl_specified=yes
+  else
+    candidate_perl_names='perl perl5'
+    perl_specified=no
+  fi
+
+  found=no
+  AC_SUBST([PERL])
+  PERL="$am_missing_run perl"
+  for perl in $candidate_perl_names; do
+    # Run test in a subshell; some versions of sh will print an error if
+    # an executable is not found, even if stderr is redirected.
+    if ( $perl -e 'require 5.005; use File::Compare; use warnings;' ) > /dev/null 2>&1; then
+      PERL=$perl
+      found=yes
+      break
+    fi
+  done
+
+  AC_MSG_RESULT([$found])
+  test $found = no && AC_MSG_WARN([
+WARNING: You don't seem to have perl5.005 or newer installed, or you lack
+         a usable version of the Perl File::Compare module.  As a result,
+         you may be unable to run a few tests or to regenerate certain
+         files if you modify the sources from which they are derived.
+] )
+])
diff --git a/src/grep/m4/perror.m4 b/src/grep/m4/perror.m4
new file mode 100644
index 0000000..9f2ac2d
--- /dev/null
+++ b/src/grep/m4/perror.m4
@@ -0,0 +1,71 @@
+# perror.m4 serial 9
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_PERROR],
+[
+  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+  AC_REQUIRE([gl_HEADER_ERRNO_H])
+  AC_REQUIRE([gl_FUNC_STRERROR_R])
+  AC_REQUIRE([gl_FUNC_STRERROR_0])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  dnl We intentionally do not check for the broader REPLACE_STRERROR_R,
+  dnl since on glibc systems, strerror_r is replaced only for signature
+  dnl issues, and perror is just fine.  Rather, we only want to
+  dnl replace perror if strerror_r was replaced for a content fix.
+  if test "$ERRNO_H:$REPLACE_STRERROR_0" != :0; then
+    dnl The system's perror() cannot know about the new errno values we add
+    dnl to <errno.h>, or any fix for strerror(0). Replace it.
+    REPLACE_PERROR=1
+  fi
+  case ${gl_cv_func_strerror_r_works-unset} in
+    unset|*yes)
+      AC_CACHE_CHECK([whether perror matches strerror],
+        [gl_cv_func_perror_works],
+        [AC_RUN_IFELSE(
+           [AC_LANG_PROGRAM(
+              [[#include <errno.h>
+                #include <stdio.h>
+                #include <stdlib.h>
+                #include <string.h>
+              ]],
+              [[char *str = strerror (-1);
+                if (!getenv("CONFTEST_OUTPUT")) return 0;
+                if (!str) str = "";
+                puts (str);
+                errno = -1;
+                perror ("");
+                return 0;
+              ]])],
+           [if CONFTEST_OUTPUT=1 ./conftest$EXEEXT >conftest.txt1 2>conftest.txt2 \
+               && cmp conftest.txt1 conftest.txt2 >/dev/null; then
+              gl_cv_func_perror_works=yes
+            else
+              gl_cv_func_perror_works=no
+            fi
+            rm -rf conftest.txt1 conftest.txt2],
+           [gl_cv_func_perror_works=no],
+           [case "$host_os" in
+                       # Guess yes on musl systems.
+              *-musl*) gl_cv_func_perror_works="guessing yes" ;;
+                       # Guess yes on native Windows.
+              mingw*)  gl_cv_func_perror_works="guessing yes" ;;
+                       # Otherwise obey --enable-cross-guesses.
+              *)       gl_cv_func_perror_works="$gl_cross_guess_normal" ;;
+            esac
+           ])
+        ])
+      case "$gl_cv_func_perror_works" in
+        *yes) ;;
+        *) REPLACE_PERROR=1 ;;
+      esac
+      ;;
+    *)
+      dnl The system's perror() probably inherits the bugs in the
+      dnl system's strerror_r(). Replace it.
+      REPLACE_PERROR=1
+      ;;
+  esac
+])
diff --git a/src/grep/m4/pipe.m4 b/src/grep/m4/pipe.m4
new file mode 100644
index 0000000..89d666d
--- /dev/null
+++ b/src/grep/m4/pipe.m4
@@ -0,0 +1,15 @@
+# pipe.m4 serial 2
+dnl Copyright (C) 2010-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_PIPE],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+
+  AC_CHECK_FUNCS_ONCE([pipe])
+  if test $ac_cv_func_pipe != yes; then
+    HAVE_PIPE=0
+  fi
+])
diff --git a/src/grep/m4/pkg.m4 b/src/grep/m4/pkg.m4
new file mode 100644
index 0000000..d8549a4
--- /dev/null
+++ b/src/grep/m4/pkg.m4
@@ -0,0 +1,343 @@
+# pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
+# serial 11 (pkg-config-0.29.1)
+
+dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
+dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
+dnl
+dnl This program is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2 of the License, or
+dnl (at your option) any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+dnl General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program; if not, write to the Free Software
+dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+dnl 02111-1307, USA.
+dnl
+dnl As a special exception to the GNU General Public License, if you
+dnl distribute this file as part of a program that contains a
+dnl configuration script generated by Autoconf, you may include it under
+dnl the same distribution terms that you use for the rest of that
+dnl program.
+
+dnl PKG_PREREQ(MIN-VERSION)
+dnl -----------------------
+dnl Since: 0.29
+dnl
+dnl Verify that the version of the pkg-config macros are at least
+dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's
+dnl installed version of pkg-config, this checks the developer's version
+dnl of pkg.m4 when generating configure.
+dnl
+dnl To ensure that this macro is defined, also add:
+dnl m4_ifndef([PKG_PREREQ],
+dnl     [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])])
+dnl
+dnl See the "Since" comment for each macro you use to see what version
+dnl of the macros you require.
+m4_defun([PKG_PREREQ],
+[m4_define([PKG_MACROS_VERSION], [0.29.1])
+m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
+    [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
+])dnl PKG_PREREQ
+
+dnl PKG_PROG_PKG_CONFIG([MIN-VERSION])
+dnl ----------------------------------
+dnl Since: 0.16
+dnl
+dnl Search for the pkg-config tool and set the PKG_CONFIG variable to
+dnl first found in the path. Checks that the version of pkg-config found
+dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is
+dnl used since that's the first version where most current features of
+dnl pkg-config existed.
+AC_DEFUN([PKG_PROG_PKG_CONFIG],
+[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
+m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
+m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
+AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
+AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
+AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
+
+if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
+	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
+fi
+if test -n "$PKG_CONFIG"; then
+	_pkg_min_version=m4_default([$1], [0.9.0])
+	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
+	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
+		AC_MSG_RESULT([yes])
+	else
+		AC_MSG_RESULT([no])
+		PKG_CONFIG=""
+	fi
+fi[]dnl
+])dnl PKG_PROG_PKG_CONFIG
+
+dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+dnl -------------------------------------------------------------------
+dnl Since: 0.18
+dnl
+dnl Check to see whether a particular set of modules exists. Similar to
+dnl PKG_CHECK_MODULES(), but does not set variables or print errors.
+dnl
+dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
+dnl only at the first occurence in configure.ac, so if the first place
+dnl it's called might be skipped (such as if it is within an "if", you
+dnl have to call PKG_CHECK_EXISTS manually
+AC_DEFUN([PKG_CHECK_EXISTS],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+if test -n "$PKG_CONFIG" && \
+    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
+  m4_default([$2], [:])
+m4_ifvaln([$3], [else
+  $3])dnl
+fi])
+
+dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
+dnl ---------------------------------------------
+dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting
+dnl pkg_failed based on the result.
+m4_define([_PKG_CONFIG],
+[if test -n "$$1"; then
+    pkg_cv_[]$1="$$1"
+ elif test -n "$PKG_CONFIG"; then
+    PKG_CHECK_EXISTS([$3],
+                     [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes ],
+		     [pkg_failed=yes])
+ else
+    pkg_failed=untried
+fi[]dnl
+])dnl _PKG_CONFIG
+
+dnl _PKG_SHORT_ERRORS_SUPPORTED
+dnl ---------------------------
+dnl Internal check to see if pkg-config supports short errors.
+AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+        _pkg_short_errors_supported=yes
+else
+        _pkg_short_errors_supported=no
+fi[]dnl
+])dnl _PKG_SHORT_ERRORS_SUPPORTED
+
+
+dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
+dnl   [ACTION-IF-NOT-FOUND])
+dnl --------------------------------------------------------------
+dnl Since: 0.4.0
+dnl
+dnl Note that if there is a possibility the first call to
+dnl PKG_CHECK_MODULES might not happen, you should be sure to include an
+dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
+AC_DEFUN([PKG_CHECK_MODULES],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
+AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
+
+pkg_failed=no
+AC_MSG_CHECKING([for $1])
+
+_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
+_PKG_CONFIG([$1][_LIBS], [libs], [$2])
+
+m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
+and $1[]_LIBS to avoid the need to call pkg-config.
+See the pkg-config man page for more details.])
+
+if test $pkg_failed = yes; then
+   	AC_MSG_RESULT([no])
+        _PKG_SHORT_ERRORS_SUPPORTED
+        if test $_pkg_short_errors_supported = yes; then
+	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
+        else 
+	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
+        fi
+	# Put the nasty error message in config.log where it belongs
+	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
+
+	m4_default([$4], [AC_MSG_ERROR(
+[Package requirements ($2) were not met:
+
+$$1_PKG_ERRORS
+
+Consider adjusting the PKG_CONFIG_PATH environment variable if you
+installed software in a non-standard prefix.
+
+_PKG_TEXT])[]dnl
+        ])
+elif test $pkg_failed = untried; then
+     	AC_MSG_RESULT([no])
+	m4_default([$4], [AC_MSG_FAILURE(
+[The pkg-config script could not be found or is too old.  Make sure it
+is in your PATH or set the PKG_CONFIG environment variable to the full
+path to pkg-config.
+
+_PKG_TEXT
+
+To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
+        ])
+else
+	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
+	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
+        AC_MSG_RESULT([yes])
+	$3
+fi[]dnl
+])dnl PKG_CHECK_MODULES
+
+
+dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
+dnl   [ACTION-IF-NOT-FOUND])
+dnl ---------------------------------------------------------------------
+dnl Since: 0.29
+dnl
+dnl Checks for existence of MODULES and gathers its build flags with
+dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags
+dnl and VARIABLE-PREFIX_LIBS from --libs.
+dnl
+dnl Note that if there is a possibility the first call to
+dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to
+dnl include an explicit call to PKG_PROG_PKG_CONFIG in your
+dnl configure.ac.
+AC_DEFUN([PKG_CHECK_MODULES_STATIC],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+_save_PKG_CONFIG=$PKG_CONFIG
+PKG_CONFIG="$PKG_CONFIG --static"
+PKG_CHECK_MODULES($@)
+PKG_CONFIG=$_save_PKG_CONFIG[]dnl
+])dnl PKG_CHECK_MODULES_STATIC
+
+
+dnl PKG_INSTALLDIR([DIRECTORY])
+dnl -------------------------
+dnl Since: 0.27
+dnl
+dnl Substitutes the variable pkgconfigdir as the location where a module
+dnl should install pkg-config .pc files. By default the directory is
+dnl $libdir/pkgconfig, but the default can be changed by passing
+dnl DIRECTORY. The user can override through the --with-pkgconfigdir
+dnl parameter.
+AC_DEFUN([PKG_INSTALLDIR],
+[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
+m4_pushdef([pkg_description],
+    [pkg-config installation directory @<:@]pkg_default[@:>@])
+AC_ARG_WITH([pkgconfigdir],
+    [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
+    [with_pkgconfigdir=]pkg_default)
+AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
+m4_popdef([pkg_default])
+m4_popdef([pkg_description])
+])dnl PKG_INSTALLDIR
+
+
+dnl PKG_NOARCH_INSTALLDIR([DIRECTORY])
+dnl --------------------------------
+dnl Since: 0.27
+dnl
+dnl Substitutes the variable noarch_pkgconfigdir as the location where a
+dnl module should install arch-independent pkg-config .pc files. By
+dnl default the directory is $datadir/pkgconfig, but the default can be
+dnl changed by passing DIRECTORY. The user can override through the
+dnl --with-noarch-pkgconfigdir parameter.
+AC_DEFUN([PKG_NOARCH_INSTALLDIR],
+[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
+m4_pushdef([pkg_description],
+    [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@])
+AC_ARG_WITH([noarch-pkgconfigdir],
+    [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],,
+    [with_noarch_pkgconfigdir=]pkg_default)
+AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
+m4_popdef([pkg_default])
+m4_popdef([pkg_description])
+])dnl PKG_NOARCH_INSTALLDIR
+
+
+dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
+dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+dnl -------------------------------------------
+dnl Since: 0.28
+dnl
+dnl Retrieves the value of the pkg-config variable for the given module.
+AC_DEFUN([PKG_CHECK_VAR],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
+
+_PKG_CONFIG([$1], [variable="][$3]["], [$2])
+AS_VAR_COPY([$1], [pkg_cv_][$1])
+
+AS_VAR_IF([$1], [""], [$5], [$4])dnl
+])dnl PKG_CHECK_VAR
+
+dnl PKG_WITH_MODULES(VARIABLE-PREFIX, MODULES,
+dnl   [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND],
+dnl   [DESCRIPTION], [DEFAULT])
+dnl ------------------------------------------
+dnl
+dnl Prepare a "--with-" configure option using the lowercase
+dnl [VARIABLE-PREFIX] name, merging the behaviour of AC_ARG_WITH and
+dnl PKG_CHECK_MODULES in a single macro.
+AC_DEFUN([PKG_WITH_MODULES],
+[
+m4_pushdef([with_arg], m4_tolower([$1]))
+
+m4_pushdef([description],
+           [m4_default([$5], [build with ]with_arg[ support])])
+
+m4_pushdef([def_arg], [m4_default([$6], [auto])])
+m4_pushdef([def_action_if_found], [AS_TR_SH([with_]with_arg)=yes])
+m4_pushdef([def_action_if_not_found], [AS_TR_SH([with_]with_arg)=no])
+
+m4_case(def_arg,
+            [yes],[m4_pushdef([with_without], [--without-]with_arg)],
+            [m4_pushdef([with_without],[--with-]with_arg)])
+
+AC_ARG_WITH(with_arg,
+     AS_HELP_STRING(with_without, description[ @<:@default=]def_arg[@:>@]),,
+    [AS_TR_SH([with_]with_arg)=def_arg])
+
+AS_CASE([$AS_TR_SH([with_]with_arg)],
+            [yes],[PKG_CHECK_MODULES([$1],[$2],$3,$4)],
+            [auto],[PKG_CHECK_MODULES([$1],[$2],
+                                        [m4_n([def_action_if_found]) $3],
+                                        [m4_n([def_action_if_not_found]) $4])])
+
+m4_popdef([with_arg])
+m4_popdef([description])
+m4_popdef([def_arg])
+
+])dnl PKG_WITH_MODULES
+
+dnl PKG_HAVE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
+dnl   [DESCRIPTION], [DEFAULT])
+dnl -----------------------------------------------
+dnl
+dnl Convenience macro to trigger AM_CONDITIONAL after PKG_WITH_MODULES
+dnl check._[VARIABLE-PREFIX] is exported as make variable.
+AC_DEFUN([PKG_HAVE_WITH_MODULES],
+[
+PKG_WITH_MODULES([$1],[$2],,,[$3],[$4])
+
+AM_CONDITIONAL([HAVE_][$1],
+               [test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"])
+])dnl PKG_HAVE_WITH_MODULES
+
+dnl PKG_HAVE_DEFINE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
+dnl   [DESCRIPTION], [DEFAULT])
+dnl ------------------------------------------------------
+dnl
+dnl Convenience macro to run AM_CONDITIONAL and AC_DEFINE after
+dnl PKG_WITH_MODULES check. HAVE_[VARIABLE-PREFIX] is exported as make
+dnl and preprocessor variable.
+AC_DEFUN([PKG_HAVE_DEFINE_WITH_MODULES],
+[
+PKG_HAVE_WITH_MODULES([$1],[$2],[$3],[$4])
+
+AS_IF([test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"],
+        [AC_DEFINE([HAVE_][$1], 1, [Enable ]m4_tolower([$1])[ support])])
+])dnl PKG_HAVE_DEFINE_WITH_MODULES
diff --git a/src/grep/m4/po.m4 b/src/grep/m4/po.m4
new file mode 100644
index 0000000..f395723
--- /dev/null
+++ b/src/grep/m4/po.m4
@@ -0,0 +1,452 @@
+# po.m4 serial 20 (gettext-0.18.2)
+dnl Copyright (C) 1995-2013 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2003.
+
+AC_PREREQ([2.60])
+
+dnl Checks for all prerequisites of the po subdirectory.
+AC_DEFUN([AM_PO_SUBDIRS],
+[
+  AC_REQUIRE([AC_PROG_MAKE_SET])dnl
+  AC_REQUIRE([AC_PROG_INSTALL])dnl
+  AC_REQUIRE([AC_PROG_MKDIR_P])dnl
+  AC_REQUIRE([AM_NLS])dnl
+
+  dnl Release version of the gettext macros. This is used to ensure that
+  dnl the gettext macros and po/Makefile.in.in are in sync.
+  AC_SUBST([GETTEXT_MACRO_VERSION], [0.18])
+
+  dnl Perform the following tests also if --disable-nls has been given,
+  dnl because they are needed for "make dist" to work.
+
+  dnl Search for GNU msgfmt in the PATH.
+  dnl The first test excludes Solaris msgfmt and early GNU msgfmt versions.
+  dnl The second test excludes FreeBSD msgfmt.
+  AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
+    [$ac_dir/$ac_word --statistics /dev/null >&]AS_MESSAGE_LOG_FD[ 2>&1 &&
+     (if $ac_dir/$ac_word --statistics /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi)],
+    :)
+  AC_PATH_PROG([GMSGFMT], [gmsgfmt], [$MSGFMT])
+
+  dnl Test whether it is GNU msgfmt >= 0.15.
+changequote(,)dnl
+  case `$MSGFMT --version | sed 1q | sed -e 's,^[^0-9]*,,'` in
+    '' | 0.[0-9] | 0.[0-9].* | 0.1[0-4] | 0.1[0-4].*) MSGFMT_015=: ;;
+    *) MSGFMT_015=$MSGFMT ;;
+  esac
+changequote([,])dnl
+  AC_SUBST([MSGFMT_015])
+changequote(,)dnl
+  case `$GMSGFMT --version | sed 1q | sed -e 's,^[^0-9]*,,'` in
+    '' | 0.[0-9] | 0.[0-9].* | 0.1[0-4] | 0.1[0-4].*) GMSGFMT_015=: ;;
+    *) GMSGFMT_015=$GMSGFMT ;;
+  esac
+changequote([,])dnl
+  AC_SUBST([GMSGFMT_015])
+
+  dnl Search for GNU xgettext 0.12 or newer in the PATH.
+  dnl The first test excludes Solaris xgettext and early GNU xgettext versions.
+  dnl The second test excludes FreeBSD xgettext.
+  AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
+    [$ac_dir/$ac_word --omit-header --copyright-holder= --msgid-bugs-address= /dev/null >&]AS_MESSAGE_LOG_FD[ 2>&1 &&
+     (if $ac_dir/$ac_word --omit-header --copyright-holder= --msgid-bugs-address= /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi)],
+    :)
+  dnl Remove leftover from FreeBSD xgettext call.
+  rm -f messages.po
+
+  dnl Test whether it is GNU xgettext >= 0.15.
+changequote(,)dnl
+  case `$XGETTEXT --version | sed 1q | sed -e 's,^[^0-9]*,,'` in
+    '' | 0.[0-9] | 0.[0-9].* | 0.1[0-4] | 0.1[0-4].*) XGETTEXT_015=: ;;
+    *) XGETTEXT_015=$XGETTEXT ;;
+  esac
+changequote([,])dnl
+  AC_SUBST([XGETTEXT_015])
+
+  dnl Search for GNU msgmerge 0.11 or newer in the PATH.
+  AM_PATH_PROG_WITH_TEST(MSGMERGE, msgmerge,
+    [$ac_dir/$ac_word --update -q /dev/null /dev/null >&]AS_MESSAGE_LOG_FD[ 2>&1], :)
+
+  dnl Installation directories.
+  dnl Autoconf >= 2.60 defines localedir. For older versions of autoconf, we
+  dnl have to define it here, so that it can be used in po/Makefile.
+  test -n "$localedir" || localedir='${datadir}/locale'
+  AC_SUBST([localedir])
+
+  dnl Support for AM_XGETTEXT_OPTION.
+  test -n "${XGETTEXT_EXTRA_OPTIONS+set}" || XGETTEXT_EXTRA_OPTIONS=
+  AC_SUBST([XGETTEXT_EXTRA_OPTIONS])
+
+  AC_CONFIG_COMMANDS([po-directories], [[
+    for ac_file in $CONFIG_FILES; do
+      # Support "outfile[:infile[:infile...]]"
+      case "$ac_file" in
+        *:*) ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+      esac
+      # PO directories have a Makefile.in generated from Makefile.in.in.
+      case "$ac_file" in */Makefile.in)
+        # Adjust a relative srcdir.
+        ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'`
+        ac_dir_suffix=/`echo "$ac_dir"|sed 's%^\./%%'`
+        ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'`
+        # In autoconf-2.13 it is called $ac_given_srcdir.
+        # In autoconf-2.50 it is called $srcdir.
+        test -n "$ac_given_srcdir" || ac_given_srcdir="$srcdir"
+        case "$ac_given_srcdir" in
+          .)  top_srcdir=`echo $ac_dots|sed 's%/$%%'` ;;
+          /*) top_srcdir="$ac_given_srcdir" ;;
+          *)  top_srcdir="$ac_dots$ac_given_srcdir" ;;
+        esac
+        # Treat a directory as a PO directory if and only if it has a
+        # POTFILES.in file. This allows packages to have multiple PO
+        # directories under different names or in different locations.
+        if test -f "$ac_given_srcdir/$ac_dir/POTFILES.in"; then
+          rm -f "$ac_dir/POTFILES"
+          test -n "$as_me" && echo "$as_me: creating $ac_dir/POTFILES" || echo "creating $ac_dir/POTFILES"
+          gt_tab=`printf '\t'`
+          cat "$ac_given_srcdir/$ac_dir/POTFILES.in" | sed -e "/^#/d" -e "/^[ ${gt_tab}]*\$/d" -e "s,.*,     $top_srcdir/& \\\\," | sed -e "\$s/\(.*\) \\\\/\1/" > "$ac_dir/POTFILES"
+          POMAKEFILEDEPS="POTFILES.in"
+          # ALL_LINGUAS, POFILES, UPDATEPOFILES, DUMMYPOFILES, GMOFILES depend
+          # on $ac_dir but don't depend on user-specified configuration
+          # parameters.
+          if test -f "$ac_given_srcdir/$ac_dir/LINGUAS"; then
+            # The LINGUAS file contains the set of available languages.
+            if test -n "$OBSOLETE_ALL_LINGUAS"; then
+              test -n "$as_me" && echo "$as_me: setting ALL_LINGUAS in configure.in is obsolete" || echo "setting ALL_LINGUAS in configure.in is obsolete"
+            fi
+            ALL_LINGUAS_=`sed -e "/^#/d" -e "s/#.*//" "$ac_given_srcdir/$ac_dir/LINGUAS"`
+            # Hide the ALL_LINGUAS assignment from automake < 1.5.
+            eval 'ALL_LINGUAS''=$ALL_LINGUAS_'
+            POMAKEFILEDEPS="$POMAKEFILEDEPS LINGUAS"
+          else
+            # The set of available languages was given in configure.in.
+            # Hide the ALL_LINGUAS assignment from automake < 1.5.
+            eval 'ALL_LINGUAS''=$OBSOLETE_ALL_LINGUAS'
+          fi
+          # Compute POFILES
+          # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).po)
+          # Compute UPDATEPOFILES
+          # as      $(foreach lang, $(ALL_LINGUAS), $(lang).po-update)
+          # Compute DUMMYPOFILES
+          # as      $(foreach lang, $(ALL_LINGUAS), $(lang).nop)
+          # Compute GMOFILES
+          # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).gmo)
+          case "$ac_given_srcdir" in
+            .) srcdirpre= ;;
+            *) srcdirpre='$(srcdir)/' ;;
+          esac
+          POFILES=
+          UPDATEPOFILES=
+          DUMMYPOFILES=
+          GMOFILES=
+          for lang in $ALL_LINGUAS; do
+            POFILES="$POFILES $srcdirpre$lang.po"
+            UPDATEPOFILES="$UPDATEPOFILES $lang.po-update"
+            DUMMYPOFILES="$DUMMYPOFILES $lang.nop"
+            GMOFILES="$GMOFILES $srcdirpre$lang.gmo"
+          done
+          # CATALOGS depends on both $ac_dir and the user's LINGUAS
+          # environment variable.
+          INST_LINGUAS=
+          if test -n "$ALL_LINGUAS"; then
+            for presentlang in $ALL_LINGUAS; do
+              useit=no
+              if test "%UNSET%" != "$LINGUAS"; then
+                desiredlanguages="$LINGUAS"
+              else
+                desiredlanguages="$ALL_LINGUAS"
+              fi
+              for desiredlang in $desiredlanguages; do
+                # Use the presentlang catalog if desiredlang is
+                #   a. equal to presentlang, or
+                #   b. a variant of presentlang (because in this case,
+                #      presentlang can be used as a fallback for messages
+                #      which are not translated in the desiredlang catalog).
+                case "$desiredlang" in
+                  "$presentlang"*) useit=yes;;
+                esac
+              done
+              if test $useit = yes; then
+                INST_LINGUAS="$INST_LINGUAS $presentlang"
+              fi
+            done
+          fi
+          CATALOGS=
+          if test -n "$INST_LINGUAS"; then
+            for lang in $INST_LINGUAS; do
+              CATALOGS="$CATALOGS $lang.gmo"
+            done
+          fi
+          test -n "$as_me" && echo "$as_me: creating $ac_dir/Makefile" || echo "creating $ac_dir/Makefile"
+          sed -e "/^POTFILES =/r $ac_dir/POTFILES" -e "/^# Makevars/r $ac_given_srcdir/$ac_dir/Makevars" -e "s|@POFILES@|$POFILES|g" -e "s|@UPDATEPOFILES@|$UPDATEPOFILES|g" -e "s|@DUMMYPOFILES@|$DUMMYPOFILES|g" -e "s|@GMOFILES@|$GMOFILES|g" -e "s|@CATALOGS@|$CATALOGS|g" -e "s|@POMAKEFILEDEPS@|$POMAKEFILEDEPS|g" "$ac_dir/Makefile.in" > "$ac_dir/Makefile"
+          for f in "$ac_given_srcdir/$ac_dir"/Rules-*; do
+            if test -f "$f"; then
+              case "$f" in
+                *.orig | *.bak | *~) ;;
+                *) cat "$f" >> "$ac_dir/Makefile" ;;
+              esac
+            fi
+          done
+        fi
+        ;;
+      esac
+    done]],
+   [# Capture the value of obsolete ALL_LINGUAS because we need it to compute
+    # POFILES, UPDATEPOFILES, DUMMYPOFILES, GMOFILES, CATALOGS. But hide it
+    # from automake < 1.5.
+    eval 'OBSOLETE_ALL_LINGUAS''="$ALL_LINGUAS"'
+    # Capture the value of LINGUAS because we need it to compute CATALOGS.
+    LINGUAS="${LINGUAS-%UNSET%}"
+   ])
+])
+
+dnl Postprocesses a Makefile in a directory containing PO files.
+AC_DEFUN([AM_POSTPROCESS_PO_MAKEFILE],
+[
+  # When this code is run, in config.status, two variables have already been
+  # set:
+  # - OBSOLETE_ALL_LINGUAS is the value of LINGUAS set in configure.in,
+  # - LINGUAS is the value of the environment variable LINGUAS at configure
+  #   time.
+
+changequote(,)dnl
+  # Adjust a relative srcdir.
+  ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'`
+  ac_dir_suffix=/`echo "$ac_dir"|sed 's%^\./%%'`
+  ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'`
+  # In autoconf-2.13 it is called $ac_given_srcdir.
+  # In autoconf-2.50 it is called $srcdir.
+  test -n "$ac_given_srcdir" || ac_given_srcdir="$srcdir"
+  case "$ac_given_srcdir" in
+    .)  top_srcdir=`echo $ac_dots|sed 's%/$%%'` ;;
+    /*) top_srcdir="$ac_given_srcdir" ;;
+    *)  top_srcdir="$ac_dots$ac_given_srcdir" ;;
+  esac
+
+  # Find a way to echo strings without interpreting backslash.
+  if test "X`(echo '\t') 2>/dev/null`" = 'X\t'; then
+    gt_echo='echo'
+  else
+    if test "X`(printf '%s\n' '\t') 2>/dev/null`" = 'X\t'; then
+      gt_echo='printf %s\n'
+    else
+      echo_func () {
+        cat <<EOT
+$*
+EOT
+      }
+      gt_echo='echo_func'
+    fi
+  fi
+
+  # A sed script that extracts the value of VARIABLE from a Makefile.
+  tab=`printf '\t'`
+  sed_x_variable='
+# Test if the hold space is empty.
+x
+s/P/P/
+x
+ta
+# Yes it was empty. Look if we have the expected variable definition.
+/^['"${tab}"' ]*VARIABLE['"${tab}"' ]*=/{
+  # Seen the first line of the variable definition.
+  s/^['"${tab}"' ]*VARIABLE['"${tab}"' ]*=//
+  ba
+}
+bd
+:a
+# Here we are processing a line from the variable definition.
+# Remove comment, more precisely replace it with a space.
+s/#.*$/ /
+# See if the line ends in a backslash.
+tb
+:b
+s/\\$//
+# Print the line, without the trailing backslash.
+p
+tc
+# There was no trailing backslash. The end of the variable definition is
+# reached. Clear the hold space.
+s/^.*$//
+x
+bd
+:c
+# A trailing backslash means that the variable definition continues in the
+# next line. Put a nonempty string into the hold space to indicate this.
+s/^.*$/P/
+x
+:d
+'
+changequote([,])dnl
+
+  # Set POTFILES to the value of the Makefile variable POTFILES.
+  sed_x_POTFILES=`$gt_echo "$sed_x_variable" | sed -e '/^ *#/d' -e 's/VARIABLE/POTFILES/g'`
+  POTFILES=`sed -n -e "$sed_x_POTFILES" < "$ac_file"`
+  # Compute POTFILES_DEPS as
+  #   $(foreach file, $(POTFILES), $(top_srcdir)/$(file))
+  POTFILES_DEPS=
+  for file in $POTFILES; do
+    POTFILES_DEPS="$POTFILES_DEPS "'$(top_srcdir)/'"$file"
+  done
+  POMAKEFILEDEPS=""
+
+  if test -n "$OBSOLETE_ALL_LINGUAS"; then
+    test -n "$as_me" && echo "$as_me: setting ALL_LINGUAS in configure.in is obsolete" || echo "setting ALL_LINGUAS in configure.in is obsolete"
+  fi
+  if test -f "$ac_given_srcdir/$ac_dir/LINGUAS"; then
+    # The LINGUAS file contains the set of available languages.
+    ALL_LINGUAS_=`sed -e "/^#/d" -e "s/#.*//" "$ac_given_srcdir/$ac_dir/LINGUAS"`
+    POMAKEFILEDEPS="$POMAKEFILEDEPS LINGUAS"
+  else
+    # Set ALL_LINGUAS to the value of the Makefile variable LINGUAS.
+    sed_x_LINGUAS=`$gt_echo "$sed_x_variable" | sed -e '/^ *#/d' -e 's/VARIABLE/LINGUAS/g'`
+    ALL_LINGUAS_=`sed -n -e "$sed_x_LINGUAS" < "$ac_file"`
+  fi
+  # Hide the ALL_LINGUAS assignment from automake < 1.5.
+  eval 'ALL_LINGUAS''=$ALL_LINGUAS_'
+  # Compute POFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).po)
+  # Compute UPDATEPOFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(lang).po-update)
+  # Compute DUMMYPOFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(lang).nop)
+  # Compute GMOFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).gmo)
+  # Compute PROPERTIESFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(top_srcdir)/$(DOMAIN)_$(lang).properties)
+  # Compute CLASSFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(top_srcdir)/$(DOMAIN)_$(lang).class)
+  # Compute QMFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).qm)
+  # Compute MSGFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(frob $(lang)).msg)
+  # Compute RESOURCESDLLFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(frob $(lang))/$(DOMAIN).resources.dll)
+  case "$ac_given_srcdir" in
+    .) srcdirpre= ;;
+    *) srcdirpre='$(srcdir)/' ;;
+  esac
+  POFILES=
+  UPDATEPOFILES=
+  DUMMYPOFILES=
+  GMOFILES=
+  PROPERTIESFILES=
+  CLASSFILES=
+  QMFILES=
+  MSGFILES=
+  RESOURCESDLLFILES=
+  for lang in $ALL_LINGUAS; do
+    POFILES="$POFILES $srcdirpre$lang.po"
+    UPDATEPOFILES="$UPDATEPOFILES $lang.po-update"
+    DUMMYPOFILES="$DUMMYPOFILES $lang.nop"
+    GMOFILES="$GMOFILES $srcdirpre$lang.gmo"
+    PROPERTIESFILES="$PROPERTIESFILES \$(top_srcdir)/\$(DOMAIN)_$lang.properties"
+    CLASSFILES="$CLASSFILES \$(top_srcdir)/\$(DOMAIN)_$lang.class"
+    QMFILES="$QMFILES $srcdirpre$lang.qm"
+    frobbedlang=`echo $lang | sed -e 's/\..*$//' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
+    MSGFILES="$MSGFILES $srcdirpre$frobbedlang.msg"
+    frobbedlang=`echo $lang | sed -e 's/_/-/g' -e 's/^sr-CS/sr-SP/' -e 's/@latin$/-Latn/' -e 's/@cyrillic$/-Cyrl/' -e 's/^sr-SP$/sr-SP-Latn/' -e 's/^uz-UZ$/uz-UZ-Latn/'`
+    RESOURCESDLLFILES="$RESOURCESDLLFILES $srcdirpre$frobbedlang/\$(DOMAIN).resources.dll"
+  done
+  # CATALOGS depends on both $ac_dir and the user's LINGUAS
+  # environment variable.
+  INST_LINGUAS=
+  if test -n "$ALL_LINGUAS"; then
+    for presentlang in $ALL_LINGUAS; do
+      useit=no
+      if test "%UNSET%" != "$LINGUAS"; then
+        desiredlanguages="$LINGUAS"
+      else
+        desiredlanguages="$ALL_LINGUAS"
+      fi
+      for desiredlang in $desiredlanguages; do
+        # Use the presentlang catalog if desiredlang is
+        #   a. equal to presentlang, or
+        #   b. a variant of presentlang (because in this case,
+        #      presentlang can be used as a fallback for messages
+        #      which are not translated in the desiredlang catalog).
+        case "$desiredlang" in
+          "$presentlang"*) useit=yes;;
+        esac
+      done
+      if test $useit = yes; then
+        INST_LINGUAS="$INST_LINGUAS $presentlang"
+      fi
+    done
+  fi
+  CATALOGS=
+  JAVACATALOGS=
+  QTCATALOGS=
+  TCLCATALOGS=
+  CSHARPCATALOGS=
+  if test -n "$INST_LINGUAS"; then
+    for lang in $INST_LINGUAS; do
+      CATALOGS="$CATALOGS $lang.gmo"
+      JAVACATALOGS="$JAVACATALOGS \$(DOMAIN)_$lang.properties"
+      QTCATALOGS="$QTCATALOGS $lang.qm"
+      frobbedlang=`echo $lang | sed -e 's/\..*$//' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
+      TCLCATALOGS="$TCLCATALOGS $frobbedlang.msg"
+      frobbedlang=`echo $lang | sed -e 's/_/-/g' -e 's/^sr-CS/sr-SP/' -e 's/@latin$/-Latn/' -e 's/@cyrillic$/-Cyrl/' -e 's/^sr-SP$/sr-SP-Latn/' -e 's/^uz-UZ$/uz-UZ-Latn/'`
+      CSHARPCATALOGS="$CSHARPCATALOGS $frobbedlang/\$(DOMAIN).resources.dll"
+    done
+  fi
+
+  sed -e "s|@POTFILES_DEPS@|$POTFILES_DEPS|g" -e "s|@POFILES@|$POFILES|g" -e "s|@UPDATEPOFILES@|$UPDATEPOFILES|g" -e "s|@DUMMYPOFILES@|$DUMMYPOFILES|g" -e "s|@GMOFILES@|$GMOFILES|g" -e "s|@PROPERTIESFILES@|$PROPERTIESFILES|g" -e "s|@CLASSFILES@|$CLASSFILES|g" -e "s|@QMFILES@|$QMFILES|g" -e "s|@MSGFILES@|$MSGFILES|g" -e "s|@RESOURCESDLLFILES@|$RESOURCESDLLFILES|g" -e "s|@CATALOGS@|$CATALOGS|g" -e "s|@JAVACATALOGS@|$JAVACATALOGS|g" -e "s|@QTCATALOGS@|$QTCATALOGS|g" -e "s|@TCLCATALOGS@|$TCLCATALOGS|g" -e "s|@CSHARPCATALOGS@|$CSHARPCATALOGS|g" -e 's,^#distdir:,distdir:,' < "$ac_file" > "$ac_file.tmp"
+  tab=`printf '\t'`
+  if grep -l '@TCLCATALOGS@' "$ac_file" > /dev/null; then
+    # Add dependencies that cannot be formulated as a simple suffix rule.
+    for lang in $ALL_LINGUAS; do
+      frobbedlang=`echo $lang | sed -e 's/\..*$//' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
+      cat >> "$ac_file.tmp" <<EOF
+$frobbedlang.msg: $lang.po
+${tab}@echo "\$(MSGFMT) -c --tcl -d \$(srcdir) -l $lang $srcdirpre$lang.po"; \
+${tab}\$(MSGFMT) -c --tcl -d "\$(srcdir)" -l $lang $srcdirpre$lang.po || { rm -f "\$(srcdir)/$frobbedlang.msg"; exit 1; }
+EOF
+    done
+  fi
+  if grep -l '@CSHARPCATALOGS@' "$ac_file" > /dev/null; then
+    # Add dependencies that cannot be formulated as a simple suffix rule.
+    for lang in $ALL_LINGUAS; do
+      frobbedlang=`echo $lang | sed -e 's/_/-/g' -e 's/^sr-CS/sr-SP/' -e 's/@latin$/-Latn/' -e 's/@cyrillic$/-Cyrl/' -e 's/^sr-SP$/sr-SP-Latn/' -e 's/^uz-UZ$/uz-UZ-Latn/'`
+      cat >> "$ac_file.tmp" <<EOF
+$frobbedlang/\$(DOMAIN).resources.dll: $lang.po
+${tab}@echo "\$(MSGFMT) -c --csharp -d \$(srcdir) -l $lang $srcdirpre$lang.po -r \$(DOMAIN)"; \
+${tab}\$(MSGFMT) -c --csharp -d "\$(srcdir)" -l $lang $srcdirpre$lang.po -r "\$(DOMAIN)" || { rm -f "\$(srcdir)/$frobbedlang.msg"; exit 1; }
+EOF
+    done
+  fi
+  if test -n "$POMAKEFILEDEPS"; then
+    cat >> "$ac_file.tmp" <<EOF
+Makefile: $POMAKEFILEDEPS
+EOF
+  fi
+  mv "$ac_file.tmp" "$ac_file"
+])
+
+dnl Initializes the accumulator used by AM_XGETTEXT_OPTION.
+AC_DEFUN([AM_XGETTEXT_OPTION_INIT],
+[
+  XGETTEXT_EXTRA_OPTIONS=
+])
+
+dnl Registers an option to be passed to xgettext in the po subdirectory.
+AC_DEFUN([AM_XGETTEXT_OPTION],
+[
+  AC_REQUIRE([AM_XGETTEXT_OPTION_INIT])
+  XGETTEXT_EXTRA_OPTIONS="$XGETTEXT_EXTRA_OPTIONS $1"
+])
diff --git a/src/grep/m4/printf.m4 b/src/grep/m4/printf.m4
new file mode 100644
index 0000000..284c7c5
--- /dev/null
+++ b/src/grep/m4/printf.m4
@@ -0,0 +1,1728 @@
+# printf.m4 serial 73
+dnl Copyright (C) 2003, 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Test whether the *printf family of functions supports the 'j', 'z', 't',
+dnl 'L' size specifiers. (ISO C99, POSIX:2001)
+dnl Result is gl_cv_func_printf_sizes_c99.
+
+AC_DEFUN([gl_PRINTF_SIZES_C99],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gl_AC_HEADER_STDINT_H])
+  AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports size specifiers as in C99],
+    [gl_cv_func_printf_sizes_c99],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#if HAVE_STDINT_H_WITH_UINTMAX
+# include <stdint.h>
+#endif
+#if HAVE_INTTYPES_H_WITH_UINTMAX
+# include <inttypes.h>
+#endif
+static char buf[100];
+int main ()
+{
+  int result = 0;
+#if HAVE_STDINT_H_WITH_UINTMAX || HAVE_INTTYPES_H_WITH_UINTMAX
+  buf[0] = '\0';
+  if (sprintf (buf, "%ju %d", (uintmax_t) 12345671, 33, 44, 55) < 0
+      || strcmp (buf, "12345671 33") != 0)
+    result |= 1;
+#else
+  result |= 1;
+#endif
+  buf[0] = '\0';
+  if (sprintf (buf, "%zu %d", (size_t) 12345672, 33, 44, 55) < 0
+      || strcmp (buf, "12345672 33") != 0)
+    result |= 2;
+  buf[0] = '\0';
+  if (sprintf (buf, "%tu %d", (ptrdiff_t) 12345673, 33, 44, 55) < 0
+      || strcmp (buf, "12345673 33") != 0)
+    result |= 4;
+  buf[0] = '\0';
+  if (sprintf (buf, "%Lg %d", (long double) 1.5, 33, 44, 55) < 0
+      || strcmp (buf, "1.5 33") != 0)
+    result |= 8;
+  return result;
+}]])],
+        [gl_cv_func_printf_sizes_c99=yes],
+        [gl_cv_func_printf_sizes_c99=no],
+        [
+         case "$host_os" in
+changequote(,)dnl
+                                 # Guess yes on glibc systems.
+           *-gnu* | gnu*)        gl_cv_func_printf_sizes_c99="guessing yes";;
+                                 # Guess yes on musl systems.
+           *-musl*)              gl_cv_func_printf_sizes_c99="guessing yes";;
+                                 # Guess yes on FreeBSD >= 5.
+           freebsd[1-4].*)       gl_cv_func_printf_sizes_c99="guessing no";;
+           freebsd* | kfreebsd*) gl_cv_func_printf_sizes_c99="guessing yes";;
+           midnightbsd*)         gl_cv_func_printf_sizes_c99="guessing yes";;
+                                 # Guess yes on Mac OS X >= 10.3.
+           darwin[1-6].*)        gl_cv_func_printf_sizes_c99="guessing no";;
+           darwin*)              gl_cv_func_printf_sizes_c99="guessing yes";;
+                                 # Guess yes on OpenBSD >= 3.9.
+           openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*)
+                                 gl_cv_func_printf_sizes_c99="guessing no";;
+           openbsd*)             gl_cv_func_printf_sizes_c99="guessing yes";;
+                                 # Guess yes on Solaris >= 2.10.
+           solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";;
+           solaris*)             gl_cv_func_printf_sizes_c99="guessing no";;
+                                 # Guess yes on NetBSD >= 3.
+           netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*)
+                                 gl_cv_func_printf_sizes_c99="guessing no";;
+           netbsd*)              gl_cv_func_printf_sizes_c99="guessing yes";;
+                                 # Guess yes on Android.
+           linux*-android*)      gl_cv_func_printf_sizes_c99="guessing yes";;
+changequote([,])dnl
+                                 # Guess yes on MSVC, no on mingw.
+           mingw*)               AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+                                   ],
+                                   [gl_cv_func_printf_sizes_c99="guessing yes"],
+                                   [gl_cv_func_printf_sizes_c99="guessing no"])
+                                 ;;
+                                 # If we don't know, obey --enable-cross-guesses.
+           *)                    gl_cv_func_printf_sizes_c99="$gl_cross_guess_normal";;
+         esac
+        ])
+    ])
+])
+
+dnl Test whether the *printf family of functions supports 'long double'
+dnl arguments together with the 'L' size specifier. (ISO C99, POSIX:2001)
+dnl Result is gl_cv_func_printf_long_double.
+
+AC_DEFUN([gl_PRINTF_LONG_DOUBLE],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports 'long double' arguments],
+    [gl_cv_func_printf_long_double],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+static char buf[10000];
+int main ()
+{
+  int result = 0;
+  buf[0] = '\0';
+  if (sprintf (buf, "%Lf %d", 1.75L, 33, 44, 55) < 0
+      || strcmp (buf, "1.750000 33") != 0)
+    result |= 1;
+  buf[0] = '\0';
+  if (sprintf (buf, "%Le %d", 1.75L, 33, 44, 55) < 0
+      || strcmp (buf, "1.750000e+00 33") != 0)
+    result |= 2;
+  buf[0] = '\0';
+  if (sprintf (buf, "%Lg %d", 1.75L, 33, 44, 55) < 0
+      || strcmp (buf, "1.75 33") != 0)
+    result |= 4;
+  return result;
+}]])],
+        [gl_cv_func_printf_long_double=yes],
+        [gl_cv_func_printf_long_double=no],
+        [case "$host_os" in
+                            # Guess no on BeOS.
+           beos*)           gl_cv_func_printf_long_double="guessing no";;
+                            # Guess yes on Android.
+           linux*-android*) gl_cv_func_printf_long_double="guessing yes";;
+                            # Guess yes on MSVC, no on mingw.
+           mingw*)          AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+                              ],
+                              [gl_cv_func_printf_long_double="guessing yes"],
+                              [gl_cv_func_printf_long_double="guessing no"])
+                            ;;
+           *)               gl_cv_func_printf_long_double="guessing yes";;
+         esac
+        ])
+    ])
+])
+
+dnl Test whether the *printf family of functions supports infinite and NaN
+dnl 'double' arguments and negative zero arguments in the %f, %e, %g
+dnl directives. (ISO C99, POSIX:2001)
+dnl Result is gl_cv_func_printf_infinite.
+
+AC_DEFUN([gl_PRINTF_INFINITE],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports infinite 'double' arguments],
+    [gl_cv_func_printf_infinite],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+static int
+strisnan (const char *string, size_t start_index, size_t end_index)
+{
+  if (start_index < end_index)
+    {
+      if (string[start_index] == '-')
+        start_index++;
+      if (start_index + 3 <= end_index
+          && memcmp (string + start_index, "nan", 3) == 0)
+        {
+          start_index += 3;
+          if (start_index == end_index
+              || (string[start_index] == '(' && string[end_index - 1] == ')'))
+            return 1;
+        }
+    }
+  return 0;
+}
+static int
+have_minus_zero ()
+{
+  static double plus_zero = 0.0;
+  double minus_zero = - plus_zero;
+  return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0;
+}
+static char buf[10000];
+static double zero = 0.0;
+int main ()
+{
+  int result = 0;
+  if (sprintf (buf, "%f", 1.0 / zero) < 0
+      || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
+    result |= 1;
+  if (sprintf (buf, "%f", -1.0 / zero) < 0
+      || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
+    result |= 1;
+  if (sprintf (buf, "%f", zero / zero) < 0
+      || !strisnan (buf, 0, strlen (buf)))
+    result |= 2;
+  if (sprintf (buf, "%e", 1.0 / zero) < 0
+      || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
+    result |= 4;
+  if (sprintf (buf, "%e", -1.0 / zero) < 0
+      || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
+    result |= 4;
+  if (sprintf (buf, "%e", zero / zero) < 0
+      || !strisnan (buf, 0, strlen (buf)))
+    result |= 8;
+  if (sprintf (buf, "%g", 1.0 / zero) < 0
+      || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
+    result |= 16;
+  if (sprintf (buf, "%g", -1.0 / zero) < 0
+      || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
+    result |= 16;
+  if (sprintf (buf, "%g", zero / zero) < 0
+      || !strisnan (buf, 0, strlen (buf)))
+    result |= 32;
+  /* This test fails on HP-UX 10.20.  */
+  if (have_minus_zero ())
+    if (sprintf (buf, "%g", - zero) < 0
+        || strcmp (buf, "-0") != 0)
+    result |= 64;
+  return result;
+}]])],
+        [gl_cv_func_printf_infinite=yes],
+        [gl_cv_func_printf_infinite=no],
+        [
+         case "$host_os" in
+changequote(,)dnl
+                                 # Guess yes on glibc systems.
+           *-gnu* | gnu*)        gl_cv_func_printf_infinite="guessing yes";;
+                                 # Guess yes on musl systems.
+           *-musl*)              gl_cv_func_printf_infinite="guessing yes";;
+                                 # Guess yes on FreeBSD >= 6.
+           freebsd[1-5].*)       gl_cv_func_printf_infinite="guessing no";;
+           freebsd* | kfreebsd*) gl_cv_func_printf_infinite="guessing yes";;
+           midnightbsd*)         gl_cv_func_printf_infinite="guessing yes";;
+                                 # Guess yes on Mac OS X >= 10.3.
+           darwin[1-6].*)        gl_cv_func_printf_infinite="guessing no";;
+           darwin*)              gl_cv_func_printf_infinite="guessing yes";;
+                                 # Guess yes on HP-UX >= 11.
+           hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite="guessing no";;
+           hpux*)                gl_cv_func_printf_infinite="guessing yes";;
+                                 # Guess yes on NetBSD >= 3.
+           netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*)
+                                 gl_cv_func_printf_infinite="guessing no";;
+           netbsd*)              gl_cv_func_printf_infinite="guessing yes";;
+                                 # Guess yes on OpenBSD >= 6.0.
+           openbsd[1-5].*)       gl_cv_func_printf_infinite="guessing no";;
+           openbsd*)             gl_cv_func_printf_infinite="guessing yes";;
+                                 # Guess yes on BeOS.
+           beos*)                gl_cv_func_printf_infinite="guessing yes";;
+                                 # Guess no on Android.
+           linux*-android*)      gl_cv_func_printf_infinite="guessing no";;
+changequote([,])dnl
+                                 # Guess yes on MSVC, no on mingw.
+           mingw*)               AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+                                   ],
+                                   [gl_cv_func_printf_infinite="guessing yes"],
+                                   [gl_cv_func_printf_infinite="guessing no"])
+                                 ;;
+                                 # If we don't know, obey --enable-cross-guesses.
+           *)                    gl_cv_func_printf_infinite="$gl_cross_guess_normal";;
+         esac
+        ])
+    ])
+])
+
+dnl Test whether the *printf family of functions supports infinite and NaN
+dnl 'long double' arguments in the %f, %e, %g directives. (ISO C99, POSIX:2001)
+dnl Result is gl_cv_func_printf_infinite_long_double.
+
+AC_DEFUN([gl_PRINTF_INFINITE_LONG_DOUBLE],
+[
+  AC_REQUIRE([gl_PRINTF_LONG_DOUBLE])
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gl_BIGENDIAN])
+  AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  dnl The user can set or unset the variable gl_printf_safe to indicate
+  dnl that he wishes a safe handling of non-IEEE-754 'long double' values.
+  if test -n "$gl_printf_safe"; then
+    AC_DEFINE([CHECK_PRINTF_SAFE], [1],
+      [Define if you wish *printf() functions that have a safe handling of
+       non-IEEE-754 'long double' values.])
+  fi
+  case "$gl_cv_func_printf_long_double" in
+    *yes)
+      AC_CACHE_CHECK([whether printf supports infinite 'long double' arguments],
+        [gl_cv_func_printf_infinite_long_double],
+        [
+          AC_RUN_IFELSE(
+            [AC_LANG_SOURCE([[
+]GL_NOCRASH[
+#include <float.h>
+#include <stdio.h>
+#include <string.h>
+static int
+strisnan (const char *string, size_t start_index, size_t end_index)
+{
+  if (start_index < end_index)
+    {
+      if (string[start_index] == '-')
+        start_index++;
+      if (start_index + 3 <= end_index
+          && memcmp (string + start_index, "nan", 3) == 0)
+        {
+          start_index += 3;
+          if (start_index == end_index
+              || (string[start_index] == '(' && string[end_index - 1] == ')'))
+            return 1;
+        }
+    }
+  return 0;
+}
+static char buf[10000];
+static long double zeroL = 0.0L;
+int main ()
+{
+  int result = 0;
+  nocrash_init();
+  if (sprintf (buf, "%Lf", 1.0L / zeroL) < 0
+      || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
+    result |= 1;
+  if (sprintf (buf, "%Lf", -1.0L / zeroL) < 0
+      || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
+    result |= 1;
+  if (sprintf (buf, "%Lf", zeroL / zeroL) < 0
+      || !strisnan (buf, 0, strlen (buf)))
+    result |= 1;
+  if (sprintf (buf, "%Le", 1.0L / zeroL) < 0
+      || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
+    result |= 1;
+  if (sprintf (buf, "%Le", -1.0L / zeroL) < 0
+      || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
+    result |= 1;
+  if (sprintf (buf, "%Le", zeroL / zeroL) < 0
+      || !strisnan (buf, 0, strlen (buf)))
+    result |= 1;
+  if (sprintf (buf, "%Lg", 1.0L / zeroL) < 0
+      || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
+    result |= 1;
+  if (sprintf (buf, "%Lg", -1.0L / zeroL) < 0
+      || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
+    result |= 1;
+  if (sprintf (buf, "%Lg", zeroL / zeroL) < 0
+      || !strisnan (buf, 0, strlen (buf)))
+    result |= 1;
+#if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
+/* Representation of an 80-bit 'long double' as an initializer for a sequence
+   of 'unsigned int' words.  */
+# ifdef WORDS_BIGENDIAN
+#  define LDBL80_WORDS(exponent,manthi,mantlo) \
+     { ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \
+       ((unsigned int) (manthi) << 16) | ((unsigned int) (mantlo) >> 16),   \
+       (unsigned int) (mantlo) << 16                                        \
+     }
+# else
+#  define LDBL80_WORDS(exponent,manthi,mantlo) \
+     { mantlo, manthi, exponent }
+# endif
+  { /* Quiet NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
+    if (sprintf (buf, "%Lf", x.value) < 0
+        || !strisnan (buf, 0, strlen (buf)))
+      result |= 2;
+    if (sprintf (buf, "%Le", x.value) < 0
+        || !strisnan (buf, 0, strlen (buf)))
+      result |= 2;
+    if (sprintf (buf, "%Lg", x.value) < 0
+        || !strisnan (buf, 0, strlen (buf)))
+      result |= 2;
+  }
+  {
+    /* Signalling NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
+    if (sprintf (buf, "%Lf", x.value) < 0
+        || !strisnan (buf, 0, strlen (buf)))
+      result |= 2;
+    if (sprintf (buf, "%Le", x.value) < 0
+        || !strisnan (buf, 0, strlen (buf)))
+      result |= 2;
+    if (sprintf (buf, "%Lg", x.value) < 0
+        || !strisnan (buf, 0, strlen (buf)))
+      result |= 2;
+  }
+  { /* Pseudo-NaN.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
+    if (sprintf (buf, "%Lf", x.value) <= 0)
+      result |= 4;
+    if (sprintf (buf, "%Le", x.value) <= 0)
+      result |= 4;
+    if (sprintf (buf, "%Lg", x.value) <= 0)
+      result |= 4;
+  }
+  { /* Pseudo-Infinity.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
+    if (sprintf (buf, "%Lf", x.value) <= 0)
+      result |= 8;
+    if (sprintf (buf, "%Le", x.value) <= 0)
+      result |= 8;
+    if (sprintf (buf, "%Lg", x.value) <= 0)
+      result |= 8;
+  }
+  { /* Pseudo-Zero.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
+    if (sprintf (buf, "%Lf", x.value) <= 0)
+      result |= 16;
+    if (sprintf (buf, "%Le", x.value) <= 0)
+      result |= 16;
+    if (sprintf (buf, "%Lg", x.value) <= 0)
+      result |= 16;
+  }
+  { /* Unnormalized number.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
+    if (sprintf (buf, "%Lf", x.value) <= 0)
+      result |= 32;
+    if (sprintf (buf, "%Le", x.value) <= 0)
+      result |= 32;
+    if (sprintf (buf, "%Lg", x.value) <= 0)
+      result |= 32;
+  }
+  { /* Pseudo-Denormal.  */
+    static union { unsigned int word[4]; long double value; } x =
+      { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
+    if (sprintf (buf, "%Lf", x.value) <= 0)
+      result |= 64;
+    if (sprintf (buf, "%Le", x.value) <= 0)
+      result |= 64;
+    if (sprintf (buf, "%Lg", x.value) <= 0)
+      result |= 64;
+  }
+#endif
+  return result;
+}]])],
+            [gl_cv_func_printf_infinite_long_double=yes],
+            [gl_cv_func_printf_infinite_long_double=no],
+            [case "$host_cpu" in
+                                     # Guess no on ia64, x86_64, i386.
+               ia64 | x86_64 | i*86) gl_cv_func_printf_infinite_long_double="guessing no";;
+               *)
+                 case "$host_os" in
+changequote(,)dnl
+                                         # Guess yes on glibc systems.
+                   *-gnu* | gnu*)        gl_cv_func_printf_infinite_long_double="guessing yes";;
+                                         # Guess yes on musl systems.
+                   *-musl*)              gl_cv_func_printf_infinite_long_double="guessing yes";;
+                                         # Guess yes on FreeBSD >= 6.
+                   freebsd[1-5].*)       gl_cv_func_printf_infinite_long_double="guessing no";;
+                   freebsd* | kfreebsd*) gl_cv_func_printf_infinite_long_double="guessing yes";;
+                   midnightbsd*)         gl_cv_func_printf_infinite_long_double="guessing yes";;
+                                         # Guess yes on HP-UX >= 11.
+                   hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite_long_double="guessing no";;
+                   hpux*)                gl_cv_func_printf_infinite_long_double="guessing yes";;
+                                         # Guess yes on OpenBSD >= 6.0.
+                   openbsd[1-5].*)       gl_cv_func_printf_infinite_long_double="guessing no";;
+                   openbsd*)             gl_cv_func_printf_infinite_long_double="guessing yes";;
+                                         # Guess no on Android.
+                   linux*-android*)      gl_cv_func_printf_infinite_long_double="guessing no";;
+changequote([,])dnl
+                                         # Guess yes on MSVC, no on mingw.
+                   mingw*)               AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+                                           ],
+                                           [gl_cv_func_printf_infinite_long_double="guessing yes"],
+                                           [gl_cv_func_printf_infinite_long_double="guessing no"])
+                                         ;;
+                                         # If we don't know, obey --enable-cross-guesses.
+                   *)                    gl_cv_func_printf_infinite_long_double="$gl_cross_guess_normal";;
+                 esac
+                 ;;
+             esac
+            ])
+        ])
+      ;;
+    *)
+      gl_cv_func_printf_infinite_long_double="irrelevant"
+      ;;
+  esac
+])
+
+dnl Test whether the *printf family of functions supports the 'a' and 'A'
+dnl conversion specifier for hexadecimal output of floating-point numbers.
+dnl (ISO C99, POSIX:2001)
+dnl Result is gl_cv_func_printf_directive_a.
+
+AC_DEFUN([gl_PRINTF_DIRECTIVE_A],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports the 'a' and 'A' directives],
+    [gl_cv_func_printf_directive_a],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+static char buf[100];
+static double zero = 0.0;
+int main ()
+{
+  int result = 0;
+  if (sprintf (buf, "%a %d", 3.1416015625, 33, 44, 55) < 0
+      || (strcmp (buf, "0x1.922p+1 33") != 0
+          && strcmp (buf, "0x3.244p+0 33") != 0
+          && strcmp (buf, "0x6.488p-1 33") != 0
+          && strcmp (buf, "0xc.91p-2 33") != 0))
+    result |= 1;
+  if (sprintf (buf, "%A %d", -3.1416015625, 33, 44, 55) < 0
+      || (strcmp (buf, "-0X1.922P+1 33") != 0
+          && strcmp (buf, "-0X3.244P+0 33") != 0
+          && strcmp (buf, "-0X6.488P-1 33") != 0
+          && strcmp (buf, "-0XC.91P-2 33") != 0))
+    result |= 2;
+  /* This catches a FreeBSD 13.0 bug: it doesn't round.  */
+  if (sprintf (buf, "%.2a %d", 1.51, 33, 44, 55) < 0
+      || (strcmp (buf, "0x1.83p+0 33") != 0
+          && strcmp (buf, "0x3.05p-1 33") != 0
+          && strcmp (buf, "0x6.0ap-2 33") != 0
+          && strcmp (buf, "0xc.14p-3 33") != 0))
+    result |= 4;
+  /* This catches a Mac OS X 10.12.4 (Darwin 16.5) bug: it doesn't round.  */
+  if (sprintf (buf, "%.0a %d", 1.51, 33, 44, 55) < 0
+      || (strcmp (buf, "0x2p+0 33") != 0
+          && strcmp (buf, "0x3p-1 33") != 0
+          && strcmp (buf, "0x6p-2 33") != 0
+          && strcmp (buf, "0xcp-3 33") != 0))
+    result |= 4;
+  /* This catches a FreeBSD 6.1 bug.  See
+     <https://lists.gnu.org/r/bug-gnulib/2007-04/msg00107.html> */
+  if (sprintf (buf, "%010a %d", 1.0 / zero, 33, 44, 55) < 0
+      || buf[0] == '0')
+    result |= 8;
+  /* This catches a Mac OS X 10.3.9 (Darwin 7.9) bug.  */
+  if (sprintf (buf, "%.1a", 1.999) < 0
+      || (strcmp (buf, "0x1.0p+1") != 0
+          && strcmp (buf, "0x2.0p+0") != 0
+          && strcmp (buf, "0x4.0p-1") != 0
+          && strcmp (buf, "0x8.0p-2") != 0))
+    result |= 16;
+  /* This catches the same Mac OS X 10.3.9 (Darwin 7.9) bug and also a
+     glibc 2.4 bug <https://sourceware.org/bugzilla/show_bug.cgi?id=2908>.  */
+  if (sprintf (buf, "%.1La", 1.999L) < 0
+      || (strcmp (buf, "0x1.0p+1") != 0
+          && strcmp (buf, "0x2.0p+0") != 0
+          && strcmp (buf, "0x4.0p-1") != 0
+          && strcmp (buf, "0x8.0p-2") != 0))
+    result |= 32;
+  return result;
+}]])],
+        [gl_cv_func_printf_directive_a=yes],
+        [gl_cv_func_printf_directive_a=no],
+        [
+         case "$host_os" in
+                                 # Guess yes on glibc >= 2.5 systems.
+           *-gnu* | gnu*)
+             AC_EGREP_CPP([BZ2908], [
+               #include <features.h>
+               #ifdef __GNU_LIBRARY__
+                #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 5) || (__GLIBC__ > 2)) && !defined __UCLIBC__
+                 BZ2908
+                #endif
+               #endif
+               ],
+               [gl_cv_func_printf_directive_a="guessing yes"],
+               [gl_cv_func_printf_directive_a="guessing no"])
+             ;;
+                                 # Guess yes on musl systems.
+           *-musl*)              gl_cv_func_printf_directive_a="guessing yes";;
+                                 # Guess no on Android.
+           linux*-android*)      gl_cv_func_printf_directive_a="guessing no";;
+                                 # Guess no on native Windows.
+           mingw*)               gl_cv_func_printf_directive_a="guessing no";;
+                                 # If we don't know, obey --enable-cross-guesses.
+           *)                    gl_cv_func_printf_directive_a="$gl_cross_guess_normal";;
+         esac
+        ])
+    ])
+])
+
+dnl Test whether the *printf family of functions supports the %F format
+dnl directive. (ISO C99, POSIX:2001)
+dnl Result is gl_cv_func_printf_directive_f.
+
+AC_DEFUN([gl_PRINTF_DIRECTIVE_F],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports the 'F' directive],
+    [gl_cv_func_printf_directive_f],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+static char buf[100];
+static double zero = 0.0;
+int main ()
+{
+  int result = 0;
+  if (sprintf (buf, "%F %d", 1234567.0, 33, 44, 55) < 0
+      || strcmp (buf, "1234567.000000 33") != 0)
+    result |= 1;
+  if (sprintf (buf, "%F", 1.0 / zero) < 0
+      || (strcmp (buf, "INF") != 0 && strcmp (buf, "INFINITY") != 0))
+    result |= 2;
+  /* This catches a Cygwin 1.5.x bug.  */
+  if (sprintf (buf, "%.F", 1234.0) < 0
+      || strcmp (buf, "1234") != 0)
+    result |= 4;
+  return result;
+}]])],
+        [gl_cv_func_printf_directive_f=yes],
+        [gl_cv_func_printf_directive_f=no],
+        [
+         case "$host_os" in
+changequote(,)dnl
+                                 # Guess yes on glibc systems.
+           *-gnu* | gnu*)        gl_cv_func_printf_directive_f="guessing yes";;
+                                 # Guess yes on musl systems.
+           *-musl*)              gl_cv_func_printf_directive_f="guessing yes";;
+                                 # Guess yes on FreeBSD >= 6.
+           freebsd[1-5].*)       gl_cv_func_printf_directive_f="guessing no";;
+           freebsd* | kfreebsd*) gl_cv_func_printf_directive_f="guessing yes";;
+           midnightbsd*)         gl_cv_func_printf_directive_f="guessing yes";;
+                                 # Guess yes on Mac OS X >= 10.3.
+           darwin[1-6].*)        gl_cv_func_printf_directive_f="guessing no";;
+           darwin*)              gl_cv_func_printf_directive_f="guessing yes";;
+                                 # Guess yes on OpenBSD >= 6.0.
+           openbsd[1-5].*)       gl_cv_func_printf_directive_f="guessing no";;
+           openbsd*)             gl_cv_func_printf_directive_f="guessing yes";;
+                                 # Guess yes on Solaris >= 2.10.
+           solaris2.[1-9][0-9]*) gl_cv_func_printf_directive_f="guessing yes";;
+           solaris*)             gl_cv_func_printf_directive_f="guessing no";;
+                                 # Guess no on Android.
+           linux*-android*)      gl_cv_func_printf_directive_f="guessing no";;
+changequote([,])dnl
+                                 # Guess yes on MSVC, no on mingw.
+           mingw*)               AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+                                   ],
+                                   [gl_cv_func_printf_directive_f="guessing yes"],
+                                   [gl_cv_func_printf_directive_f="guessing no"])
+                                 ;;
+                                 # If we don't know, obey --enable-cross-guesses.
+           *)                    gl_cv_func_printf_directive_f="$gl_cross_guess_normal";;
+         esac
+        ])
+    ])
+])
+
+dnl Test whether the *printf family of functions supports the %n format
+dnl directive. (ISO C99, POSIX:2001)
+dnl Result is gl_cv_func_printf_directive_n.
+
+AC_DEFUN([gl_PRINTF_DIRECTIVE_N],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports the 'n' directive],
+    [gl_cv_func_printf_directive_n],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef _MSC_VER
+#include <inttypes.h>
+/* See page about "Parameter Validation" on msdn.microsoft.com.
+   <https://docs.microsoft.com/en-us/cpp/c-runtime-library/parameter-validation>
+   <https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/set-invalid-parameter-handler-set-thread-local-invalid-parameter-handler>  */
+static void cdecl
+invalid_parameter_handler (const wchar_t *expression,
+                           const wchar_t *function,
+                           const wchar_t *file, unsigned int line,
+                           uintptr_t dummy)
+{
+  exit (1);
+}
+#endif
+static char fmtstring[10];
+static char buf[100];
+int main ()
+{
+  int count = -1;
+#ifdef _MSC_VER
+  _set_invalid_parameter_handler (invalid_parameter_handler);
+#endif
+  /* Copy the format string.  Some systems (glibc with _FORTIFY_SOURCE=2)
+     support %n in format strings in read-only memory but not in writable
+     memory.  */
+  strcpy (fmtstring, "%d %n");
+  if (sprintf (buf, fmtstring, 123, &count, 33, 44, 55) < 0
+      || strcmp (buf, "123 ") != 0
+      || count != 4)
+    return 1;
+  return 0;
+}]])],
+        [gl_cv_func_printf_directive_n=yes],
+        [gl_cv_func_printf_directive_n=no],
+        [case "$host_os" in
+                            # Guess no on glibc when _FORTIFY_SOURCE >= 2.
+           *-gnu* | gnu*)   AC_COMPILE_IFELSE(
+                              [AC_LANG_SOURCE(
+                                 [[#if _FORTIFY_SOURCE >= 2
+                                    error fail
+                                   #endif
+                                 ]])],
+                              [gl_cv_func_printf_directive_n="guessing yes"],
+                              [gl_cv_func_printf_directive_n="guessing no"])
+                            ;;
+                            # Guess no on Android.
+           linux*-android*) gl_cv_func_printf_directive_n="guessing no";;
+                            # Guess no on native Windows.
+           mingw*)          gl_cv_func_printf_directive_n="guessing no";;
+           *)               gl_cv_func_printf_directive_n="guessing yes";;
+         esac
+        ])
+    ])
+])
+
+dnl Test whether the *printf family of functions supports the %ls format
+dnl directive and in particular, when a precision is specified, whether
+dnl the functions stop converting the wide string argument when the number
+dnl of bytes that have been produced by this conversion equals or exceeds
+dnl the precision.
+dnl Result is gl_cv_func_printf_directive_ls.
+
+AC_DEFUN([gl_PRINTF_DIRECTIVE_LS],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports the 'ls' directive],
+    [gl_cv_func_printf_directive_ls],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <wchar.h>
+#include <string.h>
+int main ()
+{
+  int result = 0;
+  char buf[100];
+  /* Test whether %ls works at all.
+     This test fails on OpenBSD 4.0, IRIX 6.5, Solaris 2.6, Haiku, but not on
+     Cygwin 1.5.  */
+  {
+    static const wchar_t wstring[] = { 'a', 'b', 'c', 0 };
+    buf[0] = '\0';
+    if (sprintf (buf, "%ls", wstring) < 0
+        || strcmp (buf, "abc") != 0)
+      result |= 1;
+  }
+  /* This test fails on IRIX 6.5, Solaris 2.6, Cygwin 1.5, Haiku (with an
+     assertion failure inside libc), but not on OpenBSD 4.0.  */
+  {
+    static const wchar_t wstring[] = { 'a', 0 };
+    buf[0] = '\0';
+    if (sprintf (buf, "%ls", wstring) < 0
+        || strcmp (buf, "a") != 0)
+      result |= 2;
+  }
+  /* Test whether precisions in %ls are supported as specified in ISO C 99
+     section 7.19.6.1:
+       "If a precision is specified, no more than that many bytes are written
+        (including shift sequences, if any), and the array shall contain a
+        null wide character if, to equal the multibyte character sequence
+        length given by the precision, the function would need to access a
+        wide character one past the end of the array."
+     This test fails on Solaris 10.  */
+  {
+    static const wchar_t wstring[] = { 'a', 'b', (wchar_t) 0xfdfdfdfd, 0 };
+    buf[0] = '\0';
+    if (sprintf (buf, "%.2ls", wstring) < 0
+        || strcmp (buf, "ab") != 0)
+      result |= 8;
+  }
+  return result;
+}]])],
+        [gl_cv_func_printf_directive_ls=yes],
+        [gl_cv_func_printf_directive_ls=no],
+        [
+changequote(,)dnl
+         case "$host_os" in
+                            # Guess yes on OpenBSD >= 6.0.
+           openbsd[1-5].*)  gl_cv_func_printf_directive_ls="guessing no";;
+           openbsd*)        gl_cv_func_printf_directive_ls="guessing yes";;
+           irix*)           gl_cv_func_printf_directive_ls="guessing no";;
+           solaris*)        gl_cv_func_printf_directive_ls="guessing no";;
+           cygwin*)         gl_cv_func_printf_directive_ls="guessing no";;
+           beos* | haiku*)  gl_cv_func_printf_directive_ls="guessing no";;
+                            # Guess no on Android.
+           linux*-android*) gl_cv_func_printf_directive_ls="guessing no";;
+                            # Guess yes on native Windows.
+           mingw*)          gl_cv_func_printf_directive_ls="guessing yes";;
+           *)               gl_cv_func_printf_directive_ls="guessing yes";;
+         esac
+changequote([,])dnl
+        ])
+    ])
+])
+
+dnl Test whether the *printf family of functions supports POSIX/XSI format
+dnl strings with positions. (POSIX:2001)
+dnl Result is gl_cv_func_printf_positions.
+
+AC_DEFUN([gl_PRINTF_POSITIONS],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports POSIX/XSI format strings with positions],
+    [gl_cv_func_printf_positions],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+/* The string "%2$d %1$d", with dollar characters protected from the shell's
+   dollar expansion (possibly an autoconf bug).  */
+static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' };
+static char buf[100];
+int main ()
+{
+  sprintf (buf, format, 33, 55);
+  return (strcmp (buf, "55 33") != 0);
+}]])],
+        [gl_cv_func_printf_positions=yes],
+        [gl_cv_func_printf_positions=no],
+        [
+changequote(,)dnl
+         case "$host_os" in
+           netbsd[1-3]* | netbsdelf[1-3]* | netbsdaout[1-3]* | netbsdcoff[1-3]*)
+                            gl_cv_func_printf_positions="guessing no";;
+           beos*)           gl_cv_func_printf_positions="guessing no";;
+                            # Guess yes on Android.
+           linux*-android*) gl_cv_func_printf_positions="guessing yes";;
+                            # Guess no on native Windows.
+           mingw* | pw*)    gl_cv_func_printf_positions="guessing no";;
+           *)               gl_cv_func_printf_positions="guessing yes";;
+         esac
+changequote([,])dnl
+        ])
+    ])
+])
+
+dnl Test whether the *printf family of functions supports POSIX/XSI format
+dnl strings with the ' flag for grouping of decimal digits. (POSIX:2001)
+dnl Result is gl_cv_func_printf_flag_grouping.
+
+AC_DEFUN([gl_PRINTF_FLAG_GROUPING],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports the grouping flag],
+    [gl_cv_func_printf_flag_grouping],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+static char buf[100];
+int main ()
+{
+  if (sprintf (buf, "%'d %d", 1234567, 99) < 0
+      || buf[strlen (buf) - 1] != '9')
+    return 1;
+  return 0;
+}]])],
+        [gl_cv_func_printf_flag_grouping=yes],
+        [gl_cv_func_printf_flag_grouping=no],
+        [
+changequote(,)dnl
+         case "$host_os" in
+           cygwin*)         gl_cv_func_printf_flag_grouping="guessing no";;
+           netbsd*)         gl_cv_func_printf_flag_grouping="guessing no";;
+                            # Guess no on Android.
+           linux*-android*) gl_cv_func_printf_flag_grouping="guessing no";;
+                            # Guess no on native Windows.
+           mingw* | pw*)    gl_cv_func_printf_flag_grouping="guessing no";;
+           *)               gl_cv_func_printf_flag_grouping="guessing yes";;
+         esac
+changequote([,])dnl
+        ])
+    ])
+])
+
+dnl Test whether the *printf family of functions supports the - flag correctly.
+dnl (ISO C99.) See
+dnl <https://lists.gnu.org/r/bug-coreutils/2008-02/msg00035.html>
+dnl Result is gl_cv_func_printf_flag_leftadjust.
+
+AC_DEFUN([gl_PRINTF_FLAG_LEFTADJUST],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports the left-adjust flag correctly],
+    [gl_cv_func_printf_flag_leftadjust],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+static char buf[100];
+int main ()
+{
+  /* Check that a '-' flag is not annihilated by a negative width.  */
+  if (sprintf (buf, "a%-*sc", -3, "b") < 0
+      || strcmp (buf, "ab  c") != 0)
+    return 1;
+  return 0;
+}]])],
+        [gl_cv_func_printf_flag_leftadjust=yes],
+        [gl_cv_func_printf_flag_leftadjust=no],
+        [
+changequote(,)dnl
+         case "$host_os" in
+                            # Guess yes on HP-UX 11.
+           hpux11*)         gl_cv_func_printf_flag_leftadjust="guessing yes";;
+                            # Guess no on HP-UX 10 and older.
+           hpux*)           gl_cv_func_printf_flag_leftadjust="guessing no";;
+                            # Guess yes on Android.
+           linux*-android*) gl_cv_func_printf_flag_leftadjust="guessing yes";;
+                            # Guess yes on native Windows.
+           mingw*)          gl_cv_func_printf_flag_leftadjust="guessing yes";;
+                            # Guess yes otherwise.
+           *)               gl_cv_func_printf_flag_leftadjust="guessing yes";;
+         esac
+changequote([,])dnl
+        ])
+    ])
+])
+
+dnl Test whether the *printf family of functions supports padding of non-finite
+dnl values with the 0 flag correctly. (ISO C99 + TC1 + TC2.) See
+dnl <https://lists.gnu.org/r/bug-gnulib/2007-04/msg00107.html>
+dnl Result is gl_cv_func_printf_flag_zero.
+
+AC_DEFUN([gl_PRINTF_FLAG_ZERO],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports the zero flag correctly],
+    [gl_cv_func_printf_flag_zero],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+static char buf[100];
+static double zero = 0.0;
+int main ()
+{
+  if (sprintf (buf, "%010f", 1.0 / zero, 33, 44, 55) < 0
+      || (strcmp (buf, "       inf") != 0
+          && strcmp (buf, "  infinity") != 0))
+    return 1;
+  return 0;
+}]])],
+        [gl_cv_func_printf_flag_zero=yes],
+        [gl_cv_func_printf_flag_zero=no],
+        [
+changequote(,)dnl
+         case "$host_os" in
+                            # Guess yes on glibc systems.
+           *-gnu* | gnu*)   gl_cv_func_printf_flag_zero="guessing yes";;
+                            # Guess yes on musl systems.
+           *-musl*)         gl_cv_func_printf_flag_zero="guessing yes";;
+                            # Guess yes on BeOS.
+           beos*)           gl_cv_func_printf_flag_zero="guessing yes";;
+                            # Guess no on Android.
+           linux*-android*) gl_cv_func_printf_flag_zero="guessing no";;
+                            # Guess no on native Windows.
+           mingw*)          gl_cv_func_printf_flag_zero="guessing no";;
+                            # If we don't know, obey --enable-cross-guesses.
+           *)               gl_cv_func_printf_flag_zero="$gl_cross_guess_normal";;
+         esac
+changequote([,])dnl
+        ])
+    ])
+])
+
+dnl Test whether the *printf family of functions supports large precisions.
+dnl On mingw, precisions larger than 512 are treated like 512, in integer,
+dnl floating-point or pointer output. On Solaris 10/x86, precisions larger
+dnl than 510 in floating-point output crash the program. On Solaris 10/SPARC,
+dnl precisions larger than 510 in floating-point output yield wrong results.
+dnl On AIX 7.1, precisions larger than 998 in floating-point output yield
+dnl wrong results. On BeOS, precisions larger than 1044 crash the program.
+dnl Result is gl_cv_func_printf_precision.
+
+AC_DEFUN([gl_PRINTF_PRECISION],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports large precisions],
+    [gl_cv_func_printf_precision],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+static char buf[5000];
+int main ()
+{
+  int result = 0;
+#ifdef __BEOS__
+  /* On BeOS, this would crash and show a dialog box.  Avoid the crash.  */
+  return 1;
+#endif
+  if (sprintf (buf, "%.4000d %d", 1, 33, 44) < 4000 + 3)
+    result |= 1;
+  if (sprintf (buf, "%.4000f %d", 1.0, 33, 44) < 4000 + 5)
+    result |= 2;
+  if (sprintf (buf, "%.511f %d", 1.0, 33, 44) < 511 + 5
+      || buf[0] != '1')
+    result |= 4;
+  if (sprintf (buf, "%.999f %d", 1.0, 33, 44) < 999 + 5
+      || buf[0] != '1')
+    result |= 4;
+  return result;
+}]])],
+        [gl_cv_func_printf_precision=yes],
+        [gl_cv_func_printf_precision=no],
+        [
+changequote(,)dnl
+         case "$host_os" in
+           # Guess no only on Solaris, native Windows, and BeOS systems.
+           solaris*)        gl_cv_func_printf_precision="guessing no" ;;
+           mingw* | pw*)    gl_cv_func_printf_precision="guessing no" ;;
+           beos*)           gl_cv_func_printf_precision="guessing no" ;;
+                            # Guess yes on Android.
+           linux*-android*) gl_cv_func_printf_precision="guessing yes" ;;
+           *)               gl_cv_func_printf_precision="guessing yes" ;;
+         esac
+changequote([,])dnl
+        ])
+    ])
+])
+
+dnl Test whether the *printf family of functions recovers gracefully in case
+dnl of an out-of-memory condition, or whether it crashes the entire program.
+dnl Result is gl_cv_func_printf_enomem.
+
+AC_DEFUN([gl_PRINTF_ENOMEM],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gl_MULTIARCH])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf survives out-of-memory conditions],
+    [gl_cv_func_printf_enomem],
+    [
+      gl_cv_func_printf_enomem="guessing no"
+      if test "$cross_compiling" = no; then
+        if test $APPLE_UNIVERSAL_BUILD = 0; then
+          AC_LANG_CONFTEST([AC_LANG_SOURCE([[
+]GL_NOCRASH[
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <errno.h>
+int main()
+{
+  struct rlimit limit;
+  int ret;
+  nocrash_init ();
+  /* Some printf implementations allocate temporary space with malloc.  */
+  /* On BSD systems, malloc() is limited by RLIMIT_DATA.  */
+#ifdef RLIMIT_DATA
+  if (getrlimit (RLIMIT_DATA, &limit) < 0)
+    return 77;
+  if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000)
+    limit.rlim_max = 5000000;
+  limit.rlim_cur = limit.rlim_max;
+  if (setrlimit (RLIMIT_DATA, &limit) < 0)
+    return 77;
+#endif
+  /* On Linux systems, malloc() is limited by RLIMIT_AS.  */
+#ifdef RLIMIT_AS
+  if (getrlimit (RLIMIT_AS, &limit) < 0)
+    return 77;
+  if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000)
+    limit.rlim_max = 5000000;
+  limit.rlim_cur = limit.rlim_max;
+  if (setrlimit (RLIMIT_AS, &limit) < 0)
+    return 77;
+#endif
+  /* Some printf implementations allocate temporary space on the stack.  */
+#ifdef RLIMIT_STACK
+  if (getrlimit (RLIMIT_STACK, &limit) < 0)
+    return 77;
+  if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000)
+    limit.rlim_max = 5000000;
+  limit.rlim_cur = limit.rlim_max;
+  if (setrlimit (RLIMIT_STACK, &limit) < 0)
+    return 77;
+#endif
+  ret = printf ("%.5000000f", 1.0);
+  return !(ret == 5000002 || (ret < 0 && errno == ENOMEM));
+}
+          ]])])
+          if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
+            (./conftest 2>&AS_MESSAGE_LOG_FD
+             result=$?
+             _AS_ECHO_LOG([\$? = $result])
+             if test $result != 0 && test $result != 77; then result=1; fi
+             exit $result
+            ) >/dev/null 2>/dev/null
+            case $? in
+              0) gl_cv_func_printf_enomem="yes" ;;
+              77) gl_cv_func_printf_enomem="guessing no" ;;
+              *) gl_cv_func_printf_enomem="no" ;;
+            esac
+          else
+            gl_cv_func_printf_enomem="guessing no"
+          fi
+          rm -fr conftest*
+        else
+          dnl A universal build on Apple Mac OS X platforms.
+          dnl The result would be 'no' in 32-bit mode and 'yes' in 64-bit mode.
+          dnl But we need a configuration result that is valid in both modes.
+          gl_cv_func_printf_enomem="guessing no"
+        fi
+      fi
+      if test "$gl_cv_func_printf_enomem" = "guessing no"; then
+changequote(,)dnl
+        case "$host_os" in
+                           # Guess yes on glibc systems.
+          *-gnu* | gnu*)   gl_cv_func_printf_enomem="guessing yes";;
+                           # Guess yes on Solaris.
+          solaris*)        gl_cv_func_printf_enomem="guessing yes";;
+                           # Guess yes on AIX.
+          aix*)            gl_cv_func_printf_enomem="guessing yes";;
+                           # Guess yes on HP-UX/hppa.
+          hpux*)           case "$host_cpu" in
+                             hppa*) gl_cv_func_printf_enomem="guessing yes";;
+                             *)     gl_cv_func_printf_enomem="guessing no";;
+                           esac
+                           ;;
+                           # Guess yes on IRIX.
+          irix*)           gl_cv_func_printf_enomem="guessing yes";;
+                           # Guess yes on OSF/1.
+          osf*)            gl_cv_func_printf_enomem="guessing yes";;
+                           # Guess yes on BeOS.
+          beos*)           gl_cv_func_printf_enomem="guessing yes";;
+                           # Guess yes on Haiku.
+          haiku*)          gl_cv_func_printf_enomem="guessing yes";;
+                           # Guess no on Android.
+          linux*-android*) gl_cv_func_printf_enomem="guessing no";;
+                           # If we don't know, obey --enable-cross-guesses.
+          *)               gl_cv_func_printf_enomem="$gl_cross_guess_normal";;
+        esac
+changequote([,])dnl
+      fi
+    ])
+])
+
+dnl Test whether the snprintf function exists. (ISO C99, POSIX:2001)
+dnl Result is ac_cv_func_snprintf.
+
+AC_DEFUN([gl_SNPRINTF_PRESENCE],
+[
+  AC_CHECK_FUNCS_ONCE([snprintf])
+])
+
+dnl Test whether the string produced by the snprintf function is always NUL
+dnl terminated. (ISO C99, POSIX:2001)
+dnl Result is gl_cv_func_snprintf_truncation_c99.
+
+AC_DEFUN_ONCE([gl_SNPRINTF_TRUNCATION_C99],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_REQUIRE([gl_SNPRINTF_PRESENCE])
+  AC_CACHE_CHECK([whether snprintf truncates the result as in C99],
+    [gl_cv_func_snprintf_truncation_c99],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+#if HAVE_SNPRINTF
+# define my_snprintf snprintf
+#else
+# include <stdarg.h>
+static int my_snprintf (char *buf, int size, const char *format, ...)
+{
+  va_list args;
+  int ret;
+  va_start (args, format);
+  ret = vsnprintf (buf, size, format, args);
+  va_end (args);
+  return ret;
+}
+#endif
+static char buf[100];
+int main ()
+{
+  strcpy (buf, "ABCDEF");
+  my_snprintf (buf, 3, "%d %d", 4567, 89);
+  if (memcmp (buf, "45\0DEF", 6) != 0)
+    return 1;
+  return 0;
+}]])],
+        [gl_cv_func_snprintf_truncation_c99=yes],
+        [gl_cv_func_snprintf_truncation_c99=no],
+        [
+changequote(,)dnl
+         case "$host_os" in
+                                 # Guess yes on glibc systems.
+           *-gnu* | gnu*)        gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on musl systems.
+           *-musl*)              gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on FreeBSD >= 5.
+           freebsd[1-4].*)       gl_cv_func_snprintf_truncation_c99="guessing no";;
+           freebsd* | kfreebsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";;
+           midnightbsd*)         gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on Mac OS X >= 10.3.
+           darwin[1-6].*)        gl_cv_func_snprintf_truncation_c99="guessing no";;
+           darwin*)              gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on OpenBSD >= 3.9.
+           openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*)
+                                 gl_cv_func_snprintf_truncation_c99="guessing no";;
+           openbsd*)             gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on Solaris >= 2.6.
+           solaris2.[0-5] | solaris2.[0-5].*)
+                                 gl_cv_func_snprintf_truncation_c99="guessing no";;
+           solaris*)             gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on AIX >= 4.
+           aix[1-3]*)            gl_cv_func_snprintf_truncation_c99="guessing no";;
+           aix*)                 gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on HP-UX >= 11.
+           hpux[7-9]* | hpux10*) gl_cv_func_snprintf_truncation_c99="guessing no";;
+           hpux*)                gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on IRIX >= 6.5.
+           irix6.5)              gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on OSF/1 >= 5.
+           osf[3-4]*)            gl_cv_func_snprintf_truncation_c99="guessing no";;
+           osf*)                 gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on NetBSD >= 3.
+           netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*)
+                                 gl_cv_func_snprintf_truncation_c99="guessing no";;
+           netbsd*)              gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on BeOS.
+           beos*)                gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess yes on Android.
+           linux*-android*)      gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess no on native Windows.
+           mingw*)               gl_cv_func_snprintf_truncation_c99="guessing no";;
+                                 # If we don't know, obey --enable-cross-guesses.
+           *)                    gl_cv_func_snprintf_truncation_c99="$gl_cross_guess_normal";;
+         esac
+changequote([,])dnl
+        ])
+    ])
+])
+
+dnl Test whether the return value of the snprintf function is the number
+dnl of bytes (excluding the terminating NUL) that would have been produced
+dnl if the buffer had been large enough. (ISO C99, POSIX:2001)
+dnl For example, this test program fails on IRIX 6.5:
+dnl     ---------------------------------------------------------------------
+dnl     #include <stdio.h>
+dnl     int main()
+dnl     {
+dnl       static char buf[8];
+dnl       int retval = snprintf (buf, 3, "%d", 12345);
+dnl       return retval >= 0 && retval < 3;
+dnl     }
+dnl     ---------------------------------------------------------------------
+dnl Result is gl_cv_func_snprintf_retval_c99.
+
+AC_DEFUN_ONCE([gl_SNPRINTF_RETVAL_C99],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_REQUIRE([gl_SNPRINTF_PRESENCE])
+  AC_CACHE_CHECK([whether snprintf returns a byte count as in C99],
+    [gl_cv_func_snprintf_retval_c99],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+#if HAVE_SNPRINTF
+# define my_snprintf snprintf
+#else
+# include <stdarg.h>
+static int my_snprintf (char *buf, int size, const char *format, ...)
+{
+  va_list args;
+  int ret;
+  va_start (args, format);
+  ret = vsnprintf (buf, size, format, args);
+  va_end (args);
+  return ret;
+}
+#endif
+static char buf[100];
+int main ()
+{
+  strcpy (buf, "ABCDEF");
+  if (my_snprintf (buf, 3, "%d %d", 4567, 89) != 7)
+    return 1;
+  if (my_snprintf (buf, 0, "%d %d", 4567, 89) != 7)
+    return 2;
+  if (my_snprintf (NULL, 0, "%d %d", 4567, 89) != 7)
+    return 3;
+  return 0;
+}]])],
+        [gl_cv_func_snprintf_retval_c99=yes],
+        [gl_cv_func_snprintf_retval_c99=no],
+        [case "$host_os" in
+changequote(,)dnl
+                                 # Guess yes on glibc systems.
+           *-gnu* | gnu*)        gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on musl systems.
+           *-musl*)              gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on FreeBSD >= 5.
+           freebsd[1-4].*)       gl_cv_func_snprintf_retval_c99="guessing no";;
+           freebsd* | kfreebsd*) gl_cv_func_snprintf_retval_c99="guessing yes";;
+           midnightbsd*)         gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on Mac OS X >= 10.3.
+           darwin[1-6].*)        gl_cv_func_snprintf_retval_c99="guessing no";;
+           darwin*)              gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on OpenBSD >= 3.9.
+           openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*)
+                                 gl_cv_func_snprintf_retval_c99="guessing no";;
+           openbsd*)             gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on Solaris >= 2.10.
+           solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";;
+           solaris*)             gl_cv_func_printf_sizes_c99="guessing no";;
+                                 # Guess yes on AIX >= 4.
+           aix[1-3]*)            gl_cv_func_snprintf_retval_c99="guessing no";;
+           aix*)                 gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on NetBSD >= 3.
+           netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*)
+                                 gl_cv_func_snprintf_retval_c99="guessing no";;
+           netbsd*)              gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on BeOS.
+           beos*)                gl_cv_func_snprintf_retval_c99="guessing yes";;
+                                 # Guess yes on Android.
+           linux*-android*)      gl_cv_func_snprintf_retval_c99="guessing yes";;
+changequote([,])dnl
+                                 # Guess yes on MSVC, no on mingw.
+           mingw*)               AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+                                   ],
+                                   [gl_cv_func_snprintf_retval_c99="guessing yes"],
+                                   [gl_cv_func_snprintf_retval_c99="guessing no"])
+                                 ;;
+                                 # If we don't know, obey --enable-cross-guesses.
+           *)                    gl_cv_func_snprintf_retval_c99="$gl_cross_guess_normal";;
+         esac
+        ])
+    ])
+])
+
+dnl Test whether the snprintf function supports the %n format directive
+dnl also in truncated portions of the format string. (ISO C99, POSIX:2001)
+dnl Result is gl_cv_func_snprintf_directive_n.
+
+AC_DEFUN([gl_SNPRINTF_DIRECTIVE_N],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_REQUIRE([gl_SNPRINTF_PRESENCE])
+  AC_CACHE_CHECK([whether snprintf fully supports the 'n' directive],
+    [gl_cv_func_snprintf_directive_n],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+#if HAVE_SNPRINTF
+# define my_snprintf snprintf
+#else
+# include <stdarg.h>
+static int my_snprintf (char *buf, int size, const char *format, ...)
+{
+  va_list args;
+  int ret;
+  va_start (args, format);
+  ret = vsnprintf (buf, size, format, args);
+  va_end (args);
+  return ret;
+}
+#endif
+static char fmtstring[10];
+static char buf[100];
+int main ()
+{
+  int count = -1;
+  /* Copy the format string.  Some systems (glibc with _FORTIFY_SOURCE=2)
+     support %n in format strings in read-only memory but not in writable
+     memory.  */
+  strcpy (fmtstring, "%d %n");
+  my_snprintf (buf, 4, fmtstring, 12345, &count, 33, 44, 55);
+  if (count != 6)
+    return 1;
+  return 0;
+}]])],
+        [gl_cv_func_snprintf_directive_n=yes],
+        [gl_cv_func_snprintf_directive_n=no],
+        [
+         case "$host_os" in
+                                 # Guess no on glibc when _FORTIFY_SOURCE >= 2.
+           *-gnu* | gnu*)        AC_COMPILE_IFELSE(
+                                   [AC_LANG_SOURCE(
+                                      [[#if _FORTIFY_SOURCE >= 2
+                                         error fail
+                                        #endif
+                                      ]])],
+                                   [gl_cv_func_snprintf_directive_n="guessing yes"],
+                                   [gl_cv_func_snprintf_directive_n="guessing no"])
+                                 ;;
+changequote(,)dnl
+                                 # Guess yes on musl systems.
+           *-musl*)              gl_cv_func_snprintf_directive_n="guessing yes";;
+                                 # Guess yes on FreeBSD >= 5.
+           freebsd[1-4].*)       gl_cv_func_snprintf_directive_n="guessing no";;
+           freebsd* | kfreebsd*) gl_cv_func_snprintf_directive_n="guessing yes";;
+           midnightbsd*)         gl_cv_func_snprintf_directive_n="guessing yes";;
+                                 # Guess yes on Mac OS X >= 10.3.
+           darwin[1-6].*)        gl_cv_func_snprintf_directive_n="guessing no";;
+           darwin*)              gl_cv_func_snprintf_directive_n="guessing yes";;
+                                 # Guess yes on Solaris >= 2.6.
+           solaris2.[0-5] | solaris2.[0-5].*)
+                                 gl_cv_func_snprintf_directive_n="guessing no";;
+           solaris*)             gl_cv_func_snprintf_directive_n="guessing yes";;
+                                 # Guess yes on AIX >= 4.
+           aix[1-3]*)            gl_cv_func_snprintf_directive_n="guessing no";;
+           aix*)                 gl_cv_func_snprintf_directive_n="guessing yes";;
+                                 # Guess yes on IRIX >= 6.5.
+           irix6.5)              gl_cv_func_snprintf_directive_n="guessing yes";;
+                                 # Guess yes on OSF/1 >= 5.
+           osf[3-4]*)            gl_cv_func_snprintf_directive_n="guessing no";;
+           osf*)                 gl_cv_func_snprintf_directive_n="guessing yes";;
+                                 # Guess yes on NetBSD >= 3.
+           netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*)
+                                 gl_cv_func_snprintf_directive_n="guessing no";;
+           netbsd*)              gl_cv_func_snprintf_directive_n="guessing yes";;
+                                 # Guess yes on BeOS.
+           beos*)                gl_cv_func_snprintf_directive_n="guessing yes";;
+                                 # Guess no on Android.
+           linux*-android*)      gl_cv_func_snprintf_directive_n="guessing no";;
+                                 # Guess no on native Windows.
+           mingw*)               gl_cv_func_snprintf_directive_n="guessing no";;
+                                 # If we don't know, obey --enable-cross-guesses.
+           *)                    gl_cv_func_snprintf_directive_n="$gl_cross_guess_normal";;
+changequote([,])dnl
+         esac
+        ])
+    ])
+])
+
+dnl Test whether the snprintf function, when passed a size = 1, writes any
+dnl output without bounds in this case, behaving like sprintf. This is the
+dnl case on Linux libc5.
+dnl Result is gl_cv_func_snprintf_size1.
+
+AC_DEFUN([gl_SNPRINTF_SIZE1],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_REQUIRE([gl_SNPRINTF_PRESENCE])
+  AC_CACHE_CHECK([whether snprintf respects a size of 1],
+    [gl_cv_func_snprintf_size1],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdio.h>
+#if HAVE_SNPRINTF
+# define my_snprintf snprintf
+#else
+# include <stdarg.h>
+static int my_snprintf (char *buf, int size, const char *format, ...)
+{
+  va_list args;
+  int ret;
+  va_start (args, format);
+  ret = vsnprintf (buf, size, format, args);
+  va_end (args);
+  return ret;
+}
+#endif
+int main()
+{
+  static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' };
+  my_snprintf (buf, 1, "%d", 12345);
+  return buf[1] != 'E';
+}]])],
+        [gl_cv_func_snprintf_size1=yes],
+        [gl_cv_func_snprintf_size1=no],
+        [case "$host_os" in
+                            # Guess yes on Android.
+           linux*-android*) gl_cv_func_snprintf_size1="guessing yes" ;;
+                            # Guess yes on native Windows.
+           mingw*)          gl_cv_func_snprintf_size1="guessing yes" ;;
+           *)               gl_cv_func_snprintf_size1="guessing yes" ;;
+         esac
+        ])
+    ])
+])
+
+dnl Test whether the vsnprintf function, when passed a zero size, produces no
+dnl output. (ISO C99, POSIX:2001)
+dnl For example, snprintf nevertheless writes a NUL byte in this case
+dnl on OSF/1 5.1:
+dnl     ---------------------------------------------------------------------
+dnl     #include <stdio.h>
+dnl     int main()
+dnl     {
+dnl       static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' };
+dnl       snprintf (buf, 0, "%d", 12345);
+dnl       return buf[0] != 'D';
+dnl     }
+dnl     ---------------------------------------------------------------------
+dnl And vsnprintf writes any output without bounds in this case, behaving like
+dnl vsprintf, on HP-UX 11 and OSF/1 5.1:
+dnl     ---------------------------------------------------------------------
+dnl     #include <stdarg.h>
+dnl     #include <stdio.h>
+dnl     static int my_snprintf (char *buf, int size, const char *format, ...)
+dnl     {
+dnl       va_list args;
+dnl       int ret;
+dnl       va_start (args, format);
+dnl       ret = vsnprintf (buf, size, format, args);
+dnl       va_end (args);
+dnl       return ret;
+dnl     }
+dnl     int main()
+dnl     {
+dnl       static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' };
+dnl       my_snprintf (buf, 0, "%d", 12345);
+dnl       return buf[0] != 'D';
+dnl     }
+dnl     ---------------------------------------------------------------------
+dnl Result is gl_cv_func_vsnprintf_zerosize_c99.
+
+AC_DEFUN([gl_VSNPRINTF_ZEROSIZE_C99],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether vsnprintf respects a zero size as in C99],
+    [gl_cv_func_vsnprintf_zerosize_c99],
+    [
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <stdarg.h>
+#include <stdio.h>
+static int my_snprintf (char *buf, int size, const char *format, ...)
+{
+  va_list args;
+  int ret;
+  va_start (args, format);
+  ret = vsnprintf (buf, size, format, args);
+  va_end (args);
+  return ret;
+}
+int main()
+{
+  static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' };
+  my_snprintf (buf, 0, "%d", 12345);
+  return buf[0] != 'D';
+}]])],
+        [gl_cv_func_vsnprintf_zerosize_c99=yes],
+        [gl_cv_func_vsnprintf_zerosize_c99=no],
+        [
+changequote(,)dnl
+         case "$host_os" in
+                                 # Guess yes on glibc systems.
+           *-gnu* | gnu*)        gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+                                 # Guess yes on musl systems.
+           *-musl*)              gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+                                 # Guess yes on FreeBSD >= 5.
+           freebsd[1-4].*)       gl_cv_func_vsnprintf_zerosize_c99="guessing no";;
+           freebsd* | kfreebsd*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+           midnightbsd*)         gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+                                 # Guess yes on Mac OS X >= 10.3.
+           darwin[1-6].*)        gl_cv_func_vsnprintf_zerosize_c99="guessing no";;
+           darwin*)              gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+                                 # Guess yes on Cygwin.
+           cygwin*)              gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+                                 # Guess yes on Solaris >= 2.6.
+           solaris2.[0-5] | solaris2.[0-5].*)
+                                 gl_cv_func_vsnprintf_zerosize_c99="guessing no";;
+           solaris*)             gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+                                 # Guess yes on AIX >= 4.
+           aix[1-3]*)            gl_cv_func_vsnprintf_zerosize_c99="guessing no";;
+           aix*)                 gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+                                 # Guess yes on IRIX >= 6.5.
+           irix6.5)              gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+                                 # Guess yes on NetBSD >= 3.
+           netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*)
+                                 gl_cv_func_vsnprintf_zerosize_c99="guessing no";;
+           netbsd*)              gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+                                 # Guess yes on BeOS.
+           beos*)                gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+                                 # Guess yes on Android.
+           linux*-android*)      gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+                                 # Guess yes on native Windows.
+           mingw* | pw*)         gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+                                 # If we don't know, obey --enable-cross-guesses.
+           *)                    gl_cv_func_vsnprintf_zerosize_c99="$gl_cross_guess_normal";;
+         esac
+changequote([,])dnl
+        ])
+    ])
+])
+
+dnl The results of these tests on various platforms are:
+dnl
+dnl 1 = gl_PRINTF_SIZES_C99
+dnl 2 = gl_PRINTF_LONG_DOUBLE
+dnl 3 = gl_PRINTF_INFINITE
+dnl 4 = gl_PRINTF_INFINITE_LONG_DOUBLE
+dnl 5 = gl_PRINTF_DIRECTIVE_A
+dnl 6 = gl_PRINTF_DIRECTIVE_F
+dnl 7 = gl_PRINTF_DIRECTIVE_N
+dnl 8 = gl_PRINTF_DIRECTIVE_LS
+dnl 9 = gl_PRINTF_POSITIONS
+dnl 10 = gl_PRINTF_FLAG_GROUPING
+dnl 11 = gl_PRINTF_FLAG_LEFTADJUST
+dnl 12 = gl_PRINTF_FLAG_ZERO
+dnl 13 = gl_PRINTF_PRECISION
+dnl 14 = gl_PRINTF_ENOMEM
+dnl 15 = gl_SNPRINTF_PRESENCE
+dnl 16 = gl_SNPRINTF_TRUNCATION_C99
+dnl 17 = gl_SNPRINTF_RETVAL_C99
+dnl 18 = gl_SNPRINTF_DIRECTIVE_N
+dnl 19 = gl_SNPRINTF_SIZE1
+dnl 20 = gl_VSNPRINTF_ZEROSIZE_C99
+dnl
+dnl 1 = checking whether printf supports size specifiers as in C99...
+dnl 2 = checking whether printf supports 'long double' arguments...
+dnl 3 = checking whether printf supports infinite 'double' arguments...
+dnl 4 = checking whether printf supports infinite 'long double' arguments...
+dnl 5 = checking whether printf supports the 'a' and 'A' directives...
+dnl 6 = checking whether printf supports the 'F' directive...
+dnl 7 = checking whether printf supports the 'n' directive...
+dnl 8 = checking whether printf supports the 'ls' directive...
+dnl 9 = checking whether printf supports POSIX/XSI format strings with positions...
+dnl 10 = checking whether printf supports the grouping flag...
+dnl 11 = checking whether printf supports the left-adjust flag correctly...
+dnl 12 = checking whether printf supports the zero flag correctly...
+dnl 13 = checking whether printf supports large precisions...
+dnl 14 = checking whether printf survives out-of-memory conditions...
+dnl 15 = checking for snprintf...
+dnl 16 = checking whether snprintf truncates the result as in C99...
+dnl 17 = checking whether snprintf returns a byte count as in C99...
+dnl 18 = checking whether snprintf fully supports the 'n' directive...
+dnl 19 = checking whether snprintf respects a size of 1...
+dnl 20 = checking whether vsnprintf respects a zero size as in C99...
+dnl
+dnl . = yes, # = no.
+dnl
+dnl                                  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20
+dnl   glibc 2.5                      .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .
+dnl   glibc 2.3.6                    .  .  .  .  #  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .
+dnl   FreeBSD 13.0                   .  .  .  .  #  .  .  .  .  .  .  .  .  #  .  .  .  .  .  .
+dnl   FreeBSD 5.4, 6.1               .  .  .  .  #  .  .  .  .  .  .  #  .  #  .  .  .  .  .  .
+dnl   Mac OS X 10.13.5               .  .  .  #  #  .  #  .  .  .  .  .  .  .  .  .  .  #  .  .
+dnl   Mac OS X 10.5.8                .  .  .  #  #  .  .  .  .  .  .  #  .  .  .  .  .  .  .  .
+dnl   Mac OS X 10.3.9                .  .  .  .  #  .  .  .  .  .  .  #  .  #  .  .  .  .  .  .
+dnl   OpenBSD 6.0, 6.7               .  .  .  .  #  .  .  .  .  .  .  .  .  #  .  .  .  .  .  .
+dnl   OpenBSD 3.9, 4.0               .  .  #  #  #  #  .  #  .  #  .  #  .  #  .  .  .  .  .  .
+dnl   Cygwin 1.7.0 (2009)            .  .  .  #  .  .  .  ?  .  .  .  .  .  ?  .  .  .  .  .  .
+dnl   Cygwin 1.5.25 (2008)           .  .  .  #  #  .  .  #  .  .  .  .  .  #  .  .  .  .  .  .
+dnl   Cygwin 1.5.19 (2006)           #  .  .  #  #  #  .  #  .  #  .  #  #  #  .  .  .  .  .  .
+dnl   Solaris 11.4                   .  .  #  #  #  .  .  #  .  .  .  #  .  .  .  .  .  .  .  .
+dnl   Solaris 11.3                   .  .  .  .  #  .  .  #  .  .  .  .  .  .  .  .  .  .  .  .
+dnl   Solaris 11.0                   .  .  #  #  #  .  .  #  .  .  .  #  .  .  .  .  .  .  .  .
+dnl   Solaris 10                     .  .  #  #  #  .  .  #  .  .  .  #  #  .  .  .  .  .  .  .
+dnl   Solaris 2.6 ... 9              #  .  #  #  #  #  .  #  .  .  .  #  #  .  .  .  #  .  .  .
+dnl   Solaris 2.5.1                  #  .  #  #  #  #  .  #  .  .  .  #  .  .  #  #  #  #  #  #
+dnl   AIX 7.1                        .  .  #  #  #  .  .  .  .  .  .  #  #  .  .  .  .  .  .  .
+dnl   AIX 5.2                        .  .  #  #  #  .  .  .  .  .  .  #  .  .  .  .  .  .  .  .
+dnl   AIX 4.3.2, 5.1                 #  .  #  #  #  #  .  .  .  .  .  #  .  .  .  .  #  .  .  .
+dnl   HP-UX 11.31                    .  .  .  .  #  .  .  .  .  .  .  #  .  .  .  .  #  #  .  .
+dnl   HP-UX 11.{00,11,23}            #  .  .  .  #  #  .  .  .  .  .  #  .  .  .  .  #  #  .  #
+dnl   HP-UX 10.20                    #  .  #  .  #  #  .  ?  .  .  #  #  .  .  .  .  #  #  ?  #
+dnl   IRIX 6.5                       #  .  #  #  #  #  .  #  .  .  .  #  .  .  .  .  #  .  .  .
+dnl   OSF/1 5.1                      #  .  #  #  #  #  .  .  .  .  .  #  .  .  .  .  #  .  .  #
+dnl   OSF/1 4.0d                     #  .  #  #  #  #  .  .  .  .  .  #  .  .  #  #  #  #  #  #
+dnl   NetBSD 9.0                     .  .  .  .  #  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .
+dnl   NetBSD 5.0                     .  .  .  #  #  .  .  .  .  .  .  #  .  #  .  .  .  .  .  .
+dnl   NetBSD 4.0                     .  ?  ?  ?  ?  ?  .  ?  .  ?  ?  ?  ?  ?  .  .  .  ?  ?  ?
+dnl   NetBSD 3.0                     .  .  .  .  #  #  .  ?  #  #  ?  #  .  #  .  .  .  .  .  .
+dnl   Haiku                          .  .  .  #  #  #  .  #  .  .  .  .  .  ?  .  .  ?  .  .  .
+dnl   BeOS                           #  #  .  #  #  #  .  ?  #  .  ?  .  #  ?  .  .  ?  .  .  .
+dnl   Android 4.3                    .  .  #  #  #  #  #  #  .  #  .  #  .  #  .  .  .  #  .  .
+dnl   old mingw / msvcrt             #  #  #  #  #  #  .  .  #  #  .  #  #  ?  .  #  #  #  .  .
+dnl   MSVC 9                         #  #  #  #  #  #  #  .  #  #  .  #  #  ?  #  #  #  #  .  .
+dnl   mingw 2009-2011                .  #  .  #  .  .  .  .  #  #  .  .  .  ?  .  .  .  .  .  .
+dnl   mingw-w64 2011                 #  #  #  #  #  #  .  .  #  #  .  #  #  ?  .  #  #  #  .  .
diff --git a/src/grep/m4/progtest.m4 b/src/grep/m4/progtest.m4
new file mode 100644
index 0000000..7b39123
--- /dev/null
+++ b/src/grep/m4/progtest.m4
@@ -0,0 +1,91 @@
+# progtest.m4 serial 7 (gettext-0.18.2)
+dnl Copyright (C) 1996-2003, 2005, 2008-2013 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+AC_PREREQ([2.50])
+
+# Search path for a program which passes the given test.
+
+dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
+dnl   TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
+AC_DEFUN([AM_PATH_PROG_WITH_TEST],
+[
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
+  # contains only /bin. Note that ksh looks also at the FPATH variable,
+  # so we have to set that as well for the test.
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+           || PATH_SEPARATOR=';'
+       }
+fi
+
+# Find out how to test for executable files. Don't use a zero-byte file,
+# as systems may use methods other than mode bits to determine executability.
+cat >conf$$.file <<_ASEOF
+#! /bin/sh
+exit 0
+_ASEOF
+chmod +x conf$$.file
+if test -x conf$$.file >/dev/null 2>&1; then
+  ac_executable_p="test -x"
+else
+  ac_executable_p="test -f"
+fi
+rm -f conf$$.file
+
+# Extract the first word of "$2", so it can be a program name with args.
+set dummy $2; ac_word=[$]2
+AC_MSG_CHECKING([for $ac_word])
+AC_CACHE_VAL([ac_cv_path_$1],
+[case "[$]$1" in
+  [[\\/]]* | ?:[[\\/]]*)
+    ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
+    ;;
+  *)
+    ac_save_IFS="$IFS"; IFS=$PATH_SEPARATOR
+    for ac_dir in ifelse([$5], , $PATH, [$5]); do
+      IFS="$ac_save_IFS"
+      test -z "$ac_dir" && ac_dir=.
+      for ac_exec_ext in '' $ac_executable_extensions; do
+        if $ac_executable_p "$ac_dir/$ac_word$ac_exec_ext"; then
+          echo "$as_me: trying $ac_dir/$ac_word..." >&AS_MESSAGE_LOG_FD
+          if [$3]; then
+            ac_cv_path_$1="$ac_dir/$ac_word$ac_exec_ext"
+            break 2
+          fi
+        fi
+      done
+    done
+    IFS="$ac_save_IFS"
+dnl If no 4th arg is given, leave the cache variable unset,
+dnl so AC_PATH_PROGS will keep looking.
+ifelse([$4], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
+])dnl
+    ;;
+esac])dnl
+$1="$ac_cv_path_$1"
+if test ifelse([$4], , [-n "[$]$1"], ["[$]$1" != "$4"]); then
+  AC_MSG_RESULT([$][$1])
+else
+  AC_MSG_RESULT([no])
+fi
+AC_SUBST([$1])dnl
+])
diff --git a/src/grep/m4/pthread-thread.m4 b/src/grep/m4/pthread-thread.m4
new file mode 100644
index 0000000..949186d
--- /dev/null
+++ b/src/grep/m4/pthread-thread.m4
@@ -0,0 +1,69 @@
+# pthread-thread.m4 serial 2
+dnl Copyright (C) 2019-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_PTHREAD_THREAD],
+[
+  AC_REQUIRE([gl_PTHREAD_H])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  if { case "$host_os" in mingw*) true;; *) false;; esac; } \
+     && test $gl_threads_api = windows; then
+    dnl Choose function names that don't conflict with the mingw-w64 winpthreads
+    dnl library.
+    REPLACE_PTHREAD_CREATE=1
+    REPLACE_PTHREAD_ATTR_INIT=1
+    REPLACE_PTHREAD_ATTR_GETDETACHSTATE=1
+    REPLACE_PTHREAD_ATTR_SETDETACHSTATE=1
+    REPLACE_PTHREAD_ATTR_DESTROY=1
+    REPLACE_PTHREAD_SELF=1
+    REPLACE_PTHREAD_EQUAL=1
+    REPLACE_PTHREAD_DETACH=1
+    REPLACE_PTHREAD_JOIN=1
+    REPLACE_PTHREAD_EXIT=1
+  else
+    if test $HAVE_PTHREAD_H = 0; then
+      HAVE_PTHREAD_CREATE=0
+      HAVE_PTHREAD_ATTR_INIT=0
+      HAVE_PTHREAD_ATTR_GETDETACHSTATE=0
+      HAVE_PTHREAD_ATTR_SETDETACHSTATE=0
+      HAVE_PTHREAD_ATTR_DESTROY=0
+      HAVE_PTHREAD_SELF=0
+      HAVE_PTHREAD_EQUAL=0
+      HAVE_PTHREAD_DETACH=0
+      HAVE_PTHREAD_JOIN=0
+      HAVE_PTHREAD_EXIT=0
+    else
+      dnl On HP-UX 11.11, pthread_create() and pthread_attr_init() are only
+      dnl defined as inline functions.
+      AC_CACHE_CHECK([whether pthread_create exists as a global function],
+        [gl_cv_func_pthread_create],
+        [saved_LIBS="$LIBS"
+         LIBS="$LIBS $LIBPMULTITHREAD"
+         AC_LINK_IFELSE(
+           [AC_LANG_SOURCE(
+              [[extern
+                #ifdef __cplusplus
+                "C"
+                #endif
+                int pthread_create (void);
+                int main ()
+                {
+                  return pthread_create ();
+                }
+              ]])],
+           [gl_cv_func_pthread_create=yes],
+           [gl_cv_func_pthread_create=no])
+         LIBS="$saved_LIBS"
+        ])
+      if test $gl_cv_func_pthread_create = no; then
+        REPLACE_PTHREAD_CREATE=1
+        REPLACE_PTHREAD_ATTR_INIT=1
+        AC_DEFINE([PTHREAD_CREATE_IS_INLINE], [1],
+          [Define if pthread_create is an inline function.])
+      fi
+    fi
+  fi
+])
diff --git a/src/grep/m4/pthread_h.m4 b/src/grep/m4/pthread_h.m4
new file mode 100644
index 0000000..62a6ca8
--- /dev/null
+++ b/src/grep/m4/pthread_h.m4
@@ -0,0 +1,283 @@
+# pthread_h.m4 serial 8
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_PTHREAD_H],
+[
+  dnl Ensure to expand the default settings once only, before all statements
+  dnl that occur in other macros.
+  AC_REQUIRE([gl_PTHREAD_H_DEFAULTS])
+
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_PTHREADLIB])
+
+  gl_CHECK_NEXT_HEADERS([pthread.h])
+  if test $ac_cv_header_pthread_h = yes; then
+    HAVE_PTHREAD_H=1
+    dnl On mingw, if --enable-threads=windows or gl_AVOID_WINPTHREAD is used,
+    dnl ignore the <pthread.h> from the mingw-w64 winpthreads library.
+    m4_ifdef([gl_][THREADLIB], [
+      AC_REQUIRE([gl_][THREADLIB])
+      if { case "$host_os" in mingw*) true;; *) false;; esac; } \
+         && test $gl_threads_api = windows; then
+        HAVE_PTHREAD_H=0
+      fi
+    ])
+  else
+    HAVE_PTHREAD_H=0
+  fi
+  AC_SUBST([HAVE_PTHREAD_H])
+
+  AC_CHECK_TYPES([pthread_t, pthread_spinlock_t], [], [],
+    [AC_INCLUDES_DEFAULT[
+     #if HAVE_PTHREAD_H
+      #include <pthread.h>
+     #endif]])
+  if test $ac_cv_type_pthread_t != yes; then
+    HAVE_PTHREAD_T=0
+  fi
+  if test $ac_cv_type_pthread_spinlock_t != yes; then
+    HAVE_PTHREAD_SPINLOCK_T=0
+  fi
+
+  dnl Constants may be defined as C preprocessor macros or as enum items.
+
+  AC_CACHE_CHECK([for PTHREAD_CREATE_DETACHED],
+    [gl_cv_const_PTHREAD_CREATE_DETACHED],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <pthread.h>
+            int x = PTHREAD_CREATE_DETACHED;
+          ]],
+          [[]])],
+       [gl_cv_const_PTHREAD_CREATE_DETACHED=yes],
+       [gl_cv_const_PTHREAD_CREATE_DETACHED=no])
+    ])
+  if test $gl_cv_const_PTHREAD_CREATE_DETACHED != yes; then
+    HAVE_PTHREAD_CREATE_DETACHED=0
+  fi
+
+  AC_CACHE_CHECK([for PTHREAD_MUTEX_RECURSIVE],
+    [gl_cv_const_PTHREAD_MUTEX_RECURSIVE],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <pthread.h>
+            int x = PTHREAD_MUTEX_RECURSIVE;
+          ]],
+          [[]])],
+       [gl_cv_const_PTHREAD_MUTEX_RECURSIVE=yes],
+       [gl_cv_const_PTHREAD_MUTEX_RECURSIVE=no])
+    ])
+  if test $gl_cv_const_PTHREAD_MUTEX_RECURSIVE != yes; then
+    HAVE_PTHREAD_MUTEX_RECURSIVE=0
+  fi
+
+  AC_CACHE_CHECK([for PTHREAD_MUTEX_ROBUST],
+    [gl_cv_const_PTHREAD_MUTEX_ROBUST],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <pthread.h>
+            int x = PTHREAD_MUTEX_ROBUST;
+          ]],
+          [[]])],
+       [gl_cv_const_PTHREAD_MUTEX_ROBUST=yes],
+       [gl_cv_const_PTHREAD_MUTEX_ROBUST=no])
+    ])
+  if test $gl_cv_const_PTHREAD_MUTEX_ROBUST != yes; then
+    HAVE_PTHREAD_MUTEX_ROBUST=0
+  fi
+
+  AC_CACHE_CHECK([for PTHREAD_PROCESS_SHARED],
+    [gl_cv_const_PTHREAD_PROCESS_SHARED],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <pthread.h>
+            int x = PTHREAD_PROCESS_SHARED;
+          ]],
+          [[]])],
+       [gl_cv_const_PTHREAD_PROCESS_SHARED=yes],
+       [gl_cv_const_PTHREAD_PROCESS_SHARED=no])
+    ])
+  if test $gl_cv_const_PTHREAD_PROCESS_SHARED != yes; then
+    HAVE_PTHREAD_PROCESS_SHARED=0
+  fi
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use, if it is not common
+  dnl enough to be declared everywhere.
+  gl_WARN_ON_USE_PREPARE([[#include <pthread.h>
+    ]], [
+    pthread_create pthread_attr_init pthread_attr_getdetachstate
+    pthread_attr_setdetachstate pthread_attr_destroy pthread_self pthread_equal
+    pthread_detach pthread_join pthread_exit
+    pthread_once
+    pthread_mutex_init pthread_mutexattr_init pthread_mutexattr_gettype
+    pthread_mutexattr_settype pthread_mutexattr_getrobust
+    pthread_mutexattr_setrobust pthread_mutexattr_destroy pthread_mutex_lock
+    pthread_mutex_trylock pthread_mutex_timedlock pthread_mutex_unlock
+    pthread_mutex_destroy
+    pthread_rwlock_init pthread_rwlockattr_init pthread_rwlockattr_destroy
+    pthread_rwlock_rdlock pthread_rwlock_wrlock pthread_rwlock_tryrdlock
+    pthread_rwlock_trywrlock pthread_rwlock_timedrdlock
+    pthread_rwlock_timedwrlock pthread_rwlock_unlock pthread_rwlock_destroy
+    pthread_cond_init pthread_condattr_init pthread_condattr_destroy
+    pthread_cond_wait pthread_cond_timedwait pthread_cond_signal
+    pthread_cond_broadcast pthread_cond_destroy
+    pthread_key_create pthread_setspecific pthread_getspecific
+    pthread_key_delete
+    pthread_spin_init pthread_spin_lock pthread_spin_trylock pthread_spin_unlock
+    pthread_spin_destroy])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+
+  dnl For backward compatibility with gnulib versions <= 2019-07.
+  LIB_PTHREAD="$LIBPMULTITHREAD"
+  AC_SUBST([LIB_PTHREAD])
+])
+
+# gl_PTHREAD_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_PTHREAD_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_PTHREAD_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_PTHREAD_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_PTHREAD_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTHREAD_THREAD])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTHREAD_ONCE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTHREAD_MUTEX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTHREAD_RWLOCK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTHREAD_COND])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTHREAD_TSS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTHREAD_SPIN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTHREAD_MUTEX_TIMEDLOCK])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_PTHREAD_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_PTHREAD_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_PTHREAD_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_PTHREAD_T=1;                      AC_SUBST([HAVE_PTHREAD_T])
+  HAVE_PTHREAD_SPINLOCK_T=1;             AC_SUBST([HAVE_PTHREAD_SPINLOCK_T])
+  HAVE_PTHREAD_CREATE_DETACHED=1;        AC_SUBST([HAVE_PTHREAD_CREATE_DETACHED])
+  HAVE_PTHREAD_MUTEX_RECURSIVE=1;        AC_SUBST([HAVE_PTHREAD_MUTEX_RECURSIVE])
+  HAVE_PTHREAD_MUTEX_ROBUST=1;           AC_SUBST([HAVE_PTHREAD_MUTEX_ROBUST])
+  HAVE_PTHREAD_PROCESS_SHARED=1;         AC_SUBST([HAVE_PTHREAD_PROCESS_SHARED])
+  HAVE_PTHREAD_CREATE=1;                 AC_SUBST([HAVE_PTHREAD_CREATE])
+  HAVE_PTHREAD_ATTR_INIT=1;              AC_SUBST([HAVE_PTHREAD_ATTR_INIT])
+  HAVE_PTHREAD_ATTR_GETDETACHSTATE=1;    AC_SUBST([HAVE_PTHREAD_ATTR_GETDETACHSTATE])
+  HAVE_PTHREAD_ATTR_SETDETACHSTATE=1;    AC_SUBST([HAVE_PTHREAD_ATTR_SETDETACHSTATE])
+  HAVE_PTHREAD_ATTR_DESTROY=1;           AC_SUBST([HAVE_PTHREAD_ATTR_DESTROY])
+  HAVE_PTHREAD_SELF=1;                   AC_SUBST([HAVE_PTHREAD_SELF])
+  HAVE_PTHREAD_EQUAL=1;                  AC_SUBST([HAVE_PTHREAD_EQUAL])
+  HAVE_PTHREAD_DETACH=1;                 AC_SUBST([HAVE_PTHREAD_DETACH])
+  HAVE_PTHREAD_JOIN=1;                   AC_SUBST([HAVE_PTHREAD_JOIN])
+  HAVE_PTHREAD_EXIT=1;                   AC_SUBST([HAVE_PTHREAD_EXIT])
+  HAVE_PTHREAD_ONCE=1;                   AC_SUBST([HAVE_PTHREAD_ONCE])
+  HAVE_PTHREAD_MUTEX_INIT=1;             AC_SUBST([HAVE_PTHREAD_MUTEX_INIT])
+  HAVE_PTHREAD_MUTEXATTR_INIT=1;         AC_SUBST([HAVE_PTHREAD_MUTEXATTR_INIT])
+  HAVE_PTHREAD_MUTEXATTR_GETTYPE=1;      AC_SUBST([HAVE_PTHREAD_MUTEXATTR_GETTYPE])
+  HAVE_PTHREAD_MUTEXATTR_SETTYPE=1;      AC_SUBST([HAVE_PTHREAD_MUTEXATTR_SETTYPE])
+  HAVE_PTHREAD_MUTEXATTR_GETROBUST=1;    AC_SUBST([HAVE_PTHREAD_MUTEXATTR_GETROBUST])
+  HAVE_PTHREAD_MUTEXATTR_SETROBUST=1;    AC_SUBST([HAVE_PTHREAD_MUTEXATTR_SETROBUST])
+  HAVE_PTHREAD_MUTEXATTR_DESTROY=1;      AC_SUBST([HAVE_PTHREAD_MUTEXATTR_DESTROY])
+  HAVE_PTHREAD_MUTEX_LOCK=1;             AC_SUBST([HAVE_PTHREAD_MUTEX_LOCK])
+  HAVE_PTHREAD_MUTEX_TRYLOCK=1;          AC_SUBST([HAVE_PTHREAD_MUTEX_TRYLOCK])
+  HAVE_PTHREAD_MUTEX_TIMEDLOCK=1;        AC_SUBST([HAVE_PTHREAD_MUTEX_TIMEDLOCK])
+  HAVE_PTHREAD_MUTEX_UNLOCK=1;           AC_SUBST([HAVE_PTHREAD_MUTEX_UNLOCK])
+  HAVE_PTHREAD_MUTEX_DESTROY=1;          AC_SUBST([HAVE_PTHREAD_MUTEX_DESTROY])
+  HAVE_PTHREAD_RWLOCK_INIT=1;            AC_SUBST([HAVE_PTHREAD_RWLOCK_INIT])
+  HAVE_PTHREAD_RWLOCKATTR_INIT=1;        AC_SUBST([HAVE_PTHREAD_RWLOCKATTR_INIT])
+  HAVE_PTHREAD_RWLOCKATTR_DESTROY=1;     AC_SUBST([HAVE_PTHREAD_RWLOCKATTR_DESTROY])
+  HAVE_PTHREAD_RWLOCK_RDLOCK=1;          AC_SUBST([HAVE_PTHREAD_RWLOCK_RDLOCK])
+  HAVE_PTHREAD_RWLOCK_WRLOCK=1;          AC_SUBST([HAVE_PTHREAD_RWLOCK_WRLOCK])
+  HAVE_PTHREAD_RWLOCK_TRYRDLOCK=1;       AC_SUBST([HAVE_PTHREAD_RWLOCK_TRYRDLOCK])
+  HAVE_PTHREAD_RWLOCK_TRYWRLOCK=1;       AC_SUBST([HAVE_PTHREAD_RWLOCK_TRYWRLOCK])
+  HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK=1;     AC_SUBST([HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK])
+  HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK=1;     AC_SUBST([HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK])
+  HAVE_PTHREAD_RWLOCK_UNLOCK=1;          AC_SUBST([HAVE_PTHREAD_RWLOCK_UNLOCK])
+  HAVE_PTHREAD_RWLOCK_DESTROY=1;         AC_SUBST([HAVE_PTHREAD_RWLOCK_DESTROY])
+  HAVE_PTHREAD_COND_INIT=1;              AC_SUBST([HAVE_PTHREAD_COND_INIT])
+  HAVE_PTHREAD_CONDATTR_INIT=1;          AC_SUBST([HAVE_PTHREAD_CONDATTR_INIT])
+  HAVE_PTHREAD_CONDATTR_DESTROY=1;       AC_SUBST([HAVE_PTHREAD_CONDATTR_DESTROY])
+  HAVE_PTHREAD_COND_WAIT=1;              AC_SUBST([HAVE_PTHREAD_COND_WAIT])
+  HAVE_PTHREAD_COND_TIMEDWAIT=1;         AC_SUBST([HAVE_PTHREAD_COND_TIMEDWAIT])
+  HAVE_PTHREAD_COND_SIGNAL=1;            AC_SUBST([HAVE_PTHREAD_COND_SIGNAL])
+  HAVE_PTHREAD_COND_BROADCAST=1;         AC_SUBST([HAVE_PTHREAD_COND_BROADCAST])
+  HAVE_PTHREAD_COND_DESTROY=1;           AC_SUBST([HAVE_PTHREAD_COND_DESTROY])
+  HAVE_PTHREAD_KEY_CREATE=1;             AC_SUBST([HAVE_PTHREAD_KEY_CREATE])
+  HAVE_PTHREAD_SETSPECIFIC=1;            AC_SUBST([HAVE_PTHREAD_SETSPECIFIC])
+  HAVE_PTHREAD_GETSPECIFIC=1;            AC_SUBST([HAVE_PTHREAD_GETSPECIFIC])
+  HAVE_PTHREAD_KEY_DELETE=1;             AC_SUBST([HAVE_PTHREAD_KEY_DELETE])
+  HAVE_PTHREAD_SPIN_INIT=1;              AC_SUBST([HAVE_PTHREAD_SPIN_INIT])
+  HAVE_PTHREAD_SPIN_LOCK=1;              AC_SUBST([HAVE_PTHREAD_SPIN_LOCK])
+  HAVE_PTHREAD_SPIN_TRYLOCK=1;           AC_SUBST([HAVE_PTHREAD_SPIN_TRYLOCK])
+  HAVE_PTHREAD_SPIN_UNLOCK=1;            AC_SUBST([HAVE_PTHREAD_SPIN_UNLOCK])
+  HAVE_PTHREAD_SPIN_DESTROY=1;           AC_SUBST([HAVE_PTHREAD_SPIN_DESTROY])
+  REPLACE_PTHREAD_CREATE=0;              AC_SUBST([REPLACE_PTHREAD_CREATE])
+  REPLACE_PTHREAD_ATTR_INIT=0;           AC_SUBST([REPLACE_PTHREAD_ATTR_INIT])
+  REPLACE_PTHREAD_ATTR_GETDETACHSTATE=0; AC_SUBST([REPLACE_PTHREAD_ATTR_GETDETACHSTATE])
+  REPLACE_PTHREAD_ATTR_SETDETACHSTATE=0; AC_SUBST([REPLACE_PTHREAD_ATTR_SETDETACHSTATE])
+  REPLACE_PTHREAD_ATTR_DESTROY=0;        AC_SUBST([REPLACE_PTHREAD_ATTR_DESTROY])
+  REPLACE_PTHREAD_SELF=0;                AC_SUBST([REPLACE_PTHREAD_SELF])
+  REPLACE_PTHREAD_EQUAL=0;               AC_SUBST([REPLACE_PTHREAD_EQUAL])
+  REPLACE_PTHREAD_DETACH=0;              AC_SUBST([REPLACE_PTHREAD_DETACH])
+  REPLACE_PTHREAD_JOIN=0;                AC_SUBST([REPLACE_PTHREAD_JOIN])
+  REPLACE_PTHREAD_EXIT=0;                AC_SUBST([REPLACE_PTHREAD_EXIT])
+  REPLACE_PTHREAD_ONCE=0;                AC_SUBST([REPLACE_PTHREAD_ONCE])
+  REPLACE_PTHREAD_MUTEX_INIT=0;          AC_SUBST([REPLACE_PTHREAD_MUTEX_INIT])
+  REPLACE_PTHREAD_MUTEXATTR_INIT=0;      AC_SUBST([REPLACE_PTHREAD_MUTEXATTR_INIT])
+  REPLACE_PTHREAD_MUTEXATTR_GETTYPE=0;   AC_SUBST([REPLACE_PTHREAD_MUTEXATTR_GETTYPE])
+  REPLACE_PTHREAD_MUTEXATTR_SETTYPE=0;   AC_SUBST([REPLACE_PTHREAD_MUTEXATTR_SETTYPE])
+  REPLACE_PTHREAD_MUTEXATTR_GETROBUST=0; AC_SUBST([REPLACE_PTHREAD_MUTEXATTR_GETROBUST])
+  REPLACE_PTHREAD_MUTEXATTR_SETROBUST=0; AC_SUBST([REPLACE_PTHREAD_MUTEXATTR_SETROBUST])
+  REPLACE_PTHREAD_MUTEXATTR_DESTROY=0;   AC_SUBST([REPLACE_PTHREAD_MUTEXATTR_DESTROY])
+  REPLACE_PTHREAD_MUTEX_LOCK=0;          AC_SUBST([REPLACE_PTHREAD_MUTEX_LOCK])
+  REPLACE_PTHREAD_MUTEX_TRYLOCK=0;       AC_SUBST([REPLACE_PTHREAD_MUTEX_TRYLOCK])
+  REPLACE_PTHREAD_MUTEX_TIMEDLOCK=0;     AC_SUBST([REPLACE_PTHREAD_MUTEX_TIMEDLOCK])
+  REPLACE_PTHREAD_MUTEX_UNLOCK=0;        AC_SUBST([REPLACE_PTHREAD_MUTEX_UNLOCK])
+  REPLACE_PTHREAD_MUTEX_DESTROY=0;       AC_SUBST([REPLACE_PTHREAD_MUTEX_DESTROY])
+  REPLACE_PTHREAD_RWLOCK_INIT=0;         AC_SUBST([REPLACE_PTHREAD_RWLOCK_INIT])
+  REPLACE_PTHREAD_RWLOCKATTR_INIT=0;     AC_SUBST([REPLACE_PTHREAD_RWLOCKATTR_INIT])
+  REPLACE_PTHREAD_RWLOCKATTR_DESTROY=0;  AC_SUBST([REPLACE_PTHREAD_RWLOCKATTR_DESTROY])
+  REPLACE_PTHREAD_RWLOCK_RDLOCK=0;       AC_SUBST([REPLACE_PTHREAD_RWLOCK_RDLOCK])
+  REPLACE_PTHREAD_RWLOCK_WRLOCK=0;       AC_SUBST([REPLACE_PTHREAD_RWLOCK_WRLOCK])
+  REPLACE_PTHREAD_RWLOCK_TRYRDLOCK=0;    AC_SUBST([REPLACE_PTHREAD_RWLOCK_TRYRDLOCK])
+  REPLACE_PTHREAD_RWLOCK_TRYWRLOCK=0;    AC_SUBST([REPLACE_PTHREAD_RWLOCK_TRYWRLOCK])
+  REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK=0;  AC_SUBST([REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK])
+  REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK=0;  AC_SUBST([REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK])
+  REPLACE_PTHREAD_RWLOCK_UNLOCK=0;       AC_SUBST([REPLACE_PTHREAD_RWLOCK_UNLOCK])
+  REPLACE_PTHREAD_RWLOCK_DESTROY=0;      AC_SUBST([REPLACE_PTHREAD_RWLOCK_DESTROY])
+  REPLACE_PTHREAD_COND_INIT=0;           AC_SUBST([REPLACE_PTHREAD_COND_INIT])
+  REPLACE_PTHREAD_CONDATTR_INIT=0;       AC_SUBST([REPLACE_PTHREAD_CONDATTR_INIT])
+  REPLACE_PTHREAD_CONDATTR_DESTROY=0;    AC_SUBST([REPLACE_PTHREAD_CONDATTR_DESTROY])
+  REPLACE_PTHREAD_COND_WAIT=0;           AC_SUBST([REPLACE_PTHREAD_COND_WAIT])
+  REPLACE_PTHREAD_COND_TIMEDWAIT=0;      AC_SUBST([REPLACE_PTHREAD_COND_TIMEDWAIT])
+  REPLACE_PTHREAD_COND_SIGNAL=0;         AC_SUBST([REPLACE_PTHREAD_COND_SIGNAL])
+  REPLACE_PTHREAD_COND_BROADCAST=0;      AC_SUBST([REPLACE_PTHREAD_COND_BROADCAST])
+  REPLACE_PTHREAD_COND_DESTROY=0;        AC_SUBST([REPLACE_PTHREAD_COND_DESTROY])
+  REPLACE_PTHREAD_KEY_CREATE=0;          AC_SUBST([REPLACE_PTHREAD_KEY_CREATE])
+  REPLACE_PTHREAD_SETSPECIFIC=0;         AC_SUBST([REPLACE_PTHREAD_SETSPECIFIC])
+  REPLACE_PTHREAD_GETSPECIFIC=0;         AC_SUBST([REPLACE_PTHREAD_GETSPECIFIC])
+  REPLACE_PTHREAD_KEY_DELETE=0;          AC_SUBST([REPLACE_PTHREAD_KEY_DELETE])
+  REPLACE_PTHREAD_SPIN_INIT=0;           AC_SUBST([REPLACE_PTHREAD_SPIN_INIT])
+  REPLACE_PTHREAD_SPIN_LOCK=0;           AC_SUBST([REPLACE_PTHREAD_SPIN_LOCK])
+  REPLACE_PTHREAD_SPIN_TRYLOCK=0;        AC_SUBST([REPLACE_PTHREAD_SPIN_TRYLOCK])
+  REPLACE_PTHREAD_SPIN_UNLOCK=0;         AC_SUBST([REPLACE_PTHREAD_SPIN_UNLOCK])
+  REPLACE_PTHREAD_SPIN_DESTROY=0;        AC_SUBST([REPLACE_PTHREAD_SPIN_DESTROY])
+])
diff --git a/src/grep/m4/pthread_rwlock_rdlock.m4 b/src/grep/m4/pthread_rwlock_rdlock.m4
new file mode 100644
index 0000000..a5fbead
--- /dev/null
+++ b/src/grep/m4/pthread_rwlock_rdlock.m4
@@ -0,0 +1,185 @@
+# pthread_rwlock_rdlock.m4 serial 4
+dnl Copyright (C) 2017-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+dnl Inspired by
+dnl https://github.com/linux-test-project/ltp/blob/master/testcases/open_posix_testsuite/conformance/interfaces/pthread_rwlock_rdlock/2-2.c
+dnl by Intel Corporation.
+
+dnl Test whether in a situation where
+dnl   - an rwlock is taken by a reader and has a writer waiting,
+dnl   - an additional reader requests the lock,
+dnl   - the waiting writer and the requesting reader threads have the same
+dnl     priority,
+dnl the requesting reader thread gets blocked, so that at some point the
+dnl waiting writer can acquire the lock.
+dnl Without such a guarantee, when there a N readers and each of the readers
+dnl spends more than 1/Nth of the time with the lock held, there is a high
+dnl probability that the waiting writer will not get the lock in a given finite
+dnl time, a phenomenon called "writer starvation".
+dnl Without such a guarantee, applications have a hard time avoiding writer
+dnl starvation.
+dnl
+dnl POSIX:2017 makes this requirement only for implementations that support TPS
+dnl (Thread Priority Scheduling) and only for the scheduling policies SCHED_FIFO
+dnl and SCHED_RR, see
+dnl https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_rwlock_rdlock.html
+dnl but this test verifies the guarantee regardless of TPS and regardless of
+dnl scheduling policy.
+dnl Glibc does not provide this guarantee (and never will on Linux), see
+dnl https://sourceware.org/bugzilla/show_bug.cgi?id=13701
+dnl https://bugzilla.redhat.com/show_bug.cgi?id=1410052
+AC_DEFUN([gl_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER],
+[
+  AC_REQUIRE([gl_THREADLIB_EARLY])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether pthread_rwlock_rdlock prefers a writer to a reader],
+    [gl_cv_pthread_rwlock_rdlock_prefer_writer],
+    [save_LIBS="$LIBS"
+     LIBS="$LIBS $LIBMULTITHREAD"
+     AC_RUN_IFELSE(
+       [AC_LANG_SOURCE([[
+#include <errno.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define SUCCEED() exit (0)
+#define FAILURE() exit (1)
+#define UNEXPECTED(n) (exit (10 + (n)))
+
+/* The main thread creates the waiting writer and the requesting reader threads
+   in the default way; this guarantees that they have the same priority.
+   We can reuse the main thread as first reader thread.  */
+
+static pthread_rwlock_t lock;
+static pthread_t reader1;
+static pthread_t writer;
+static pthread_t reader2;
+static pthread_t timer;
+/* Used to pass control from writer to reader2 and from reader2 to timer,
+   as in a relay race.
+   Passing control from one running thread to another running thread
+   is most likely faster than to create the second thread.  */
+static pthread_mutex_t baton;
+
+static void *
+timer_func (void *ignored)
+{
+  /* Step 13 (can be before or after step 12):
+     The timer thread takes the baton, then waits a moment to make sure
+     it can tell whether the second reader thread is blocked at step 12.  */
+  if (pthread_mutex_lock (&baton))
+    UNEXPECTED (13);
+  usleep (100000);
+  /* By the time we get here, it's clear that the second reader thread is
+     blocked at step 12.  This is the desired behaviour.  */
+  SUCCEED ();
+}
+
+static void *
+reader2_func (void *ignored)
+{
+  int err;
+
+  /* Step 8 (can be before or after step 7):
+     The second reader thread takes the baton, then waits a moment to make sure
+     the writer thread has reached step 7.  */
+  if (pthread_mutex_lock (&baton))
+    UNEXPECTED (8);
+  usleep (100000);
+  /* Step 9: The second reader thread requests the lock.  */
+  err = pthread_rwlock_tryrdlock (&lock);
+  if (err == 0)
+    FAILURE ();
+  else if (err != EBUSY)
+    UNEXPECTED (9);
+  /* Step 10: Launch a timer, to test whether the next call blocks.  */
+  if (pthread_create (&timer, NULL, timer_func, NULL))
+    UNEXPECTED (10);
+  /* Step 11: Release the baton.  */
+  if (pthread_mutex_unlock (&baton))
+    UNEXPECTED (11);
+  /* Step 12: The second reader thread requests the lock.  */
+  err = pthread_rwlock_rdlock (&lock);
+  if (err == 0)
+    FAILURE ();
+  else
+    UNEXPECTED (12);
+}
+
+static void *
+writer_func (void *ignored)
+{
+  /* Step 4: Take the baton, so that the second reader thread does not go ahead
+     too early.  */
+  if (pthread_mutex_lock (&baton))
+    UNEXPECTED (4);
+  /* Step 5: Create the second reader thread.  */
+  if (pthread_create (&reader2, NULL, reader2_func, NULL))
+    UNEXPECTED (5);
+  /* Step 6: Release the baton.  */
+  if (pthread_mutex_unlock (&baton))
+    UNEXPECTED (6);
+  /* Step 7: The writer thread requests the lock.  */
+  if (pthread_rwlock_wrlock (&lock))
+    UNEXPECTED (7);
+  return NULL;
+}
+
+int
+main ()
+{
+  reader1 = pthread_self ();
+
+  /* Step 1: The main thread initializes the lock and the baton.  */
+  if (pthread_rwlock_init (&lock, NULL))
+    UNEXPECTED (1);
+  if (pthread_mutex_init (&baton, NULL))
+    UNEXPECTED (1);
+  /* Step 2: The main thread acquires the lock as a reader.  */
+  if (pthread_rwlock_rdlock (&lock))
+    UNEXPECTED (2);
+  /* Step 3: Create the writer thread.  */
+  if (pthread_create (&writer, NULL, writer_func, NULL))
+    UNEXPECTED (3);
+  /* Job done.  Go to sleep.  */
+  for (;;)
+    {
+      sleep (1);
+    }
+}
+]])],
+       [gl_cv_pthread_rwlock_rdlock_prefer_writer=yes],
+       [gl_cv_pthread_rwlock_rdlock_prefer_writer=no],
+       [case "$host_os" in
+                         # Guess no on glibc systems.
+          *-gnu* | gnu*) gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no" ;;
+                         # Guess no on musl systems.
+          *-musl*)       gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no" ;;
+                         # Guess no on bionic systems.
+          *-android*)    gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no" ;;
+                         # Guess yes on native Windows with the mingw-w64 winpthreads library.
+                         # Guess no on native Windows with the gnulib windows-rwlock module.
+          mingw*)        if test "$gl_use_threads" = yes || test "$gl_use_threads" = posix; then
+                           gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing yes"
+                         else
+                           gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no"
+                         fi
+                         ;;
+                         # If we don't know, obey --enable-cross-guesses.
+          *)             gl_cv_pthread_rwlock_rdlock_prefer_writer="$gl_cross_guess_normal" ;;
+         esac
+       ])
+     LIBS="$save_LIBS"
+    ])
+  case "$gl_cv_pthread_rwlock_rdlock_prefer_writer" in
+    *yes)
+      AC_DEFINE([HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER], [1],
+        [Define if the 'pthread_rwlock_rdlock' function prefers a writer to a reader.])
+      ;;
+  esac
+])
diff --git a/src/grep/m4/pthread_sigmask.m4 b/src/grep/m4/pthread_sigmask.m4
new file mode 100644
index 0000000..ff7fa96
--- /dev/null
+++ b/src/grep/m4/pthread_sigmask.m4
@@ -0,0 +1,274 @@
+# pthread_sigmask.m4 serial 21
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_PTHREAD_SIGMASK],
+[
+  AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
+
+  AC_CHECK_FUNCS_ONCE([pthread_sigmask])
+
+  dnl On MinGW pthread_sigmask is just a macro which always returns 0.
+  dnl It does not exist as a real function, which is required by POSIX.
+  AC_CACHE_CHECK([whether pthread_sigmask is a macro],
+    [gl_cv_func_pthread_sigmask_macro],
+    [AC_EGREP_CPP([headers_define_pthread_sigmask], [
+#include <pthread.h>
+#include <signal.h>
+#ifdef pthread_sigmask
+ headers_define_pthread_sigmask
+#endif],
+       [gl_cv_func_pthread_sigmask_macro=yes],
+       [gl_cv_func_pthread_sigmask_macro=no])
+    ])
+
+  LIB_PTHREAD_SIGMASK=
+
+  if test $gl_cv_func_pthread_sigmask_macro = yes; then
+    dnl pthread_sigmask is a dummy macro.
+    HAVE_PTHREAD_SIGMASK=0
+    dnl Make sure to '#undef pthread_sigmask' before defining it.
+    REPLACE_PTHREAD_SIGMASK=1
+  else
+    dnl Test whether the gnulib module 'threadlib' is in use.
+    dnl Some packages like Emacs use --avoid=threadlib.
+    dnl Write the symbol in such a way that it does not cause 'aclocal' to pick
+    dnl the threadlib.m4 file that is installed in $PREFIX/share/aclocal/.
+    m4_ifdef([gl_][THREADLIB], [
+      AC_REQUIRE([gl_][THREADLIB])
+
+      if test "$gl_threads_api" = posix; then
+        if test $ac_cv_func_pthread_sigmask = yes; then
+          dnl pthread_sigmask is available without -lpthread.
+          :
+        else
+          if test -n "$LIBMULTITHREAD"; then
+            AC_CACHE_CHECK([for pthread_sigmask in $LIBMULTITHREAD],
+              [gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD],
+              [gl_save_LIBS="$LIBS"
+               LIBS="$LIBS $LIBMULTITHREAD"
+               AC_LINK_IFELSE(
+                 [AC_LANG_PROGRAM(
+                    [[#include <pthread.h>
+                      #include <signal.h>
+                    ]],
+                    [[return pthread_sigmask (0, (sigset_t *) 0, (sigset_t *) 0);]])
+                 ],
+                 [gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD=yes],
+                 [gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD=no])
+               LIBS="$gl_save_LIBS"
+              ])
+            if test $gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD = yes; then
+              dnl pthread_sigmask is available with -pthread or -lpthread.
+              LIB_PTHREAD_SIGMASK="$LIBMULTITHREAD"
+            else
+              dnl pthread_sigmask is not available at all.
+              HAVE_PTHREAD_SIGMASK=0
+            fi
+          else
+            dnl pthread_sigmask is not available at all.
+            HAVE_PTHREAD_SIGMASK=0
+          fi
+        fi
+      else
+        dnl pthread_sigmask may exist but does not interoperate with the chosen
+        dnl multithreading facility.
+        if test $ac_cv_func_pthread_sigmask = yes; then
+          REPLACE_PTHREAD_SIGMASK=1
+        else
+          HAVE_PTHREAD_SIGMASK=0
+        fi
+      fi
+    ], [
+      dnl The module 'threadlib' is not in use, due to --avoid=threadlib being
+      dnl specified.
+      dnl The package either has prepared CPPFLAGS and LIBS for use of
+      dnl POSIX:2008 threads, or wants to build single-threaded programs.
+      if test $ac_cv_func_pthread_sigmask = yes; then
+        dnl pthread_sigmask exists and does not require extra libraries.
+        dnl Assume that it is declared.
+        :
+      else
+        dnl pthread_sigmask either does not exist or needs extra libraries.
+        HAVE_PTHREAD_SIGMASK=0
+        dnl Define the symbol rpl_pthread_sigmask, not pthread_sigmask,
+        dnl so as to not accidentally override the system's pthread_sigmask
+        dnl symbol from libpthread. This is necessary on IRIX 6.5.
+        REPLACE_PTHREAD_SIGMASK=1
+      fi
+    ])
+  fi
+
+  AC_SUBST([LIB_PTHREAD_SIGMASK])
+  dnl We don't need a variable LTLIB_PTHREAD_SIGMASK, because when
+  dnl "$gl_threads_api" = posix, $LTLIBMULTITHREAD and $LIBMULTITHREAD are the
+  dnl same.
+
+  dnl Now test for some bugs in the system function.
+  if test $HAVE_PTHREAD_SIGMASK = 1; then
+    AC_REQUIRE([AC_PROG_CC])
+    AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+    dnl On FreeBSD 13.0, MidnightBSD 1.1, HP-UX 11.31, Solaris 9, in programs
+    dnl that are not linked with -lpthread, the pthread_sigmask() function
+    dnl always returns 0 and has no effect.
+    if test -z "$LIB_PTHREAD_SIGMASK"; then
+      case " $LIBS " in
+        *' -pthread '*) ;;
+        *' -lpthread '*) ;;
+        *)
+          AC_CACHE_CHECK([whether pthread_sigmask works without -lpthread],
+            [gl_cv_func_pthread_sigmask_in_libc_works],
+            [
+              AC_RUN_IFELSE(
+                [AC_LANG_SOURCE([[
+                   #include <pthread.h>
+                   #include <signal.h>
+                   #include <stddef.h>
+                   int main ()
+                   {
+                     sigset_t set;
+                     sigemptyset (&set);
+                     return pthread_sigmask (1729, &set, NULL) != 0;
+                   }]])],
+                [gl_cv_func_pthread_sigmask_in_libc_works=no],
+                [gl_cv_func_pthread_sigmask_in_libc_works=yes],
+                [
+                 changequote(,)dnl
+                 case "$host_os" in
+                   freebsd* | midnightbsd* | hpux* | solaris | solaris2.[2-9]*)
+                     gl_cv_func_pthread_sigmask_in_libc_works="guessing no";;
+                   *)
+                     gl_cv_func_pthread_sigmask_in_libc_works="guessing yes";;
+                 esac
+                 changequote([,])dnl
+                ])
+            ])
+          case "$gl_cv_func_pthread_sigmask_in_libc_works" in
+            *no)
+              REPLACE_PTHREAD_SIGMASK=1
+              AC_DEFINE([PTHREAD_SIGMASK_INEFFECTIVE], [1],
+                [Define to 1 if pthread_sigmask may return 0 and have no effect.])
+              ;;
+          esac;;
+      esac
+    fi
+
+    dnl On Cygwin 1.7.5, the pthread_sigmask() has a wrong return value
+    dnl convention: Upon failure, it returns -1 and sets errno.
+    AC_CACHE_CHECK([whether pthread_sigmask returns error numbers],
+      [gl_cv_func_pthread_sigmask_return_works],
+      [
+        gl_save_LIBS="$LIBS"
+        LIBS="$LIBS $LIB_PTHREAD_SIGMASK"
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <pthread.h>
+#include <signal.h>
+#include <stddef.h>
+int main ()
+{
+  sigset_t set;
+  sigemptyset (&set);
+  if (pthread_sigmask (1729, &set, NULL) == -1)
+    return 1;
+  return 0;
+}]])],
+          [gl_cv_func_pthread_sigmask_return_works=yes],
+          [gl_cv_func_pthread_sigmask_return_works=no],
+          [case "$host_os" in
+             cygwin*)
+               gl_cv_func_pthread_sigmask_return_works="guessing no";;
+             *)
+               gl_cv_func_pthread_sigmask_return_works="guessing yes";;
+           esac
+          ])
+        LIBS="$gl_save_LIBS"
+      ])
+    case "$gl_cv_func_pthread_sigmask_return_works" in
+      *no)
+        REPLACE_PTHREAD_SIGMASK=1
+        AC_DEFINE([PTHREAD_SIGMASK_FAILS_WITH_ERRNO], [1],
+          [Define to 1 if pthread_sigmask(), when it fails, returns -1 and sets errno.])
+        ;;
+    esac
+
+    dnl On IRIX 6.5, in a single-threaded program, pending signals are not
+    dnl immediately delivered when they are unblocked through pthread_sigmask,
+    dnl only a little while later.
+    AC_CACHE_CHECK([whether pthread_sigmask unblocks signals correctly],
+      [gl_cv_func_pthread_sigmask_unblock_works],
+      [
+        case "$host_os" in
+          irix*)
+            gl_cv_func_pthread_sigmask_unblock_works="guessing no";;
+          *)
+            gl_cv_func_pthread_sigmask_unblock_works="guessing yes";;
+        esac
+        m4_ifdef([gl_][THREADLIB],
+          [dnl Link against $LIBMULTITHREAD, not only $LIB_PTHREAD_SIGMASK.
+           dnl Otherwise we get a false positive on those platforms where
+           dnl $gl_cv_func_pthread_sigmask_in_libc_works is "no".
+           gl_save_LIBS=$LIBS
+           LIBS="$LIBS $LIBMULTITHREAD"])
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <pthread.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+]GL_MDA_DEFINES[
+static volatile int sigint_occurred;
+static void
+sigint_handler (int sig)
+{
+  sigint_occurred++;
+}
+int main ()
+{
+  sigset_t set;
+  int pid = getpid ();
+  char command[80];
+  signal (SIGINT, sigint_handler);
+  sigemptyset (&set);
+  sigaddset (&set, SIGINT);
+  if (!(pthread_sigmask (SIG_BLOCK, &set, NULL) == 0))
+    return 1;
+  sprintf (command, "sh -c 'sleep 1; kill -%d %d' &", SIGINT, pid);
+  if (!(system (command) == 0))
+    return 2;
+  sleep (2);
+  if (!(sigint_occurred == 0))
+    return 3;
+  if (!(pthread_sigmask (SIG_UNBLOCK, &set, NULL) == 0))
+    return 4;
+  if (!(sigint_occurred == 1)) /* This fails on IRIX.  */
+    return 5;
+  return 0;
+}]])],
+          [:],
+          [gl_cv_func_pthread_sigmask_unblock_works=no],
+          [:])
+        m4_ifdef([gl_][THREADLIB], [LIBS=$gl_save_LIBS])
+      ])
+    case "$gl_cv_func_pthread_sigmask_unblock_works" in
+      *no)
+        REPLACE_PTHREAD_SIGMASK=1
+        AC_DEFINE([PTHREAD_SIGMASK_UNBLOCK_BUG], [1],
+          [Define to 1 if pthread_sigmask() unblocks signals incorrectly.])
+        ;;
+    esac
+  fi
+])
+
+# Prerequisite of lib/pthread_sigmask.c.
+AC_DEFUN([gl_PREREQ_PTHREAD_SIGMASK],
+[
+  if test $HAVE_PTHREAD_SIGMASK = 1; then
+    AC_DEFINE([HAVE_PTHREAD_SIGMASK], [1],
+      [Define to 1 if the pthread_sigmask function can be used (despite bugs).])
+  fi
+])
diff --git a/src/grep/m4/putenv.m4 b/src/grep/m4/putenv.m4
new file mode 100644
index 0000000..919984d
--- /dev/null
+++ b/src/grep/m4/putenv.m4
@@ -0,0 +1,64 @@
+# putenv.m4 serial 25
+dnl Copyright (C) 2002-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Jim Meyering.
+dnl
+dnl Check whether putenv ("FOO") removes FOO from the environment.
+dnl The putenv in libc on at least SunOS 4.1.4 does *not* do that.
+
+AC_DEFUN([gl_FUNC_PUTENV],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([for putenv compatible with GNU and SVID],
+    [gl_cv_func_svid_putenv],
+    [AC_RUN_IFELSE(
+       [AC_LANG_PROGRAM(
+          [AC_INCLUDES_DEFAULT
+           GL_MDA_DEFINES],
+          [[
+            /* Put it in env.  */
+            if (putenv ("CONFTEST_putenv=val"))
+              return 1;
+
+            /* Try to remove it.  */
+            if (putenv ("CONFTEST_putenv"))
+              return 2;
+
+            /* Make sure it was deleted.  */
+            if (getenv ("CONFTEST_putenv") != 0)
+              return 3;
+
+            return 0;
+          ]])],
+       [gl_cv_func_svid_putenv=yes],
+       [gl_cv_func_svid_putenv=no],
+       [dnl When crosscompiling, assume putenv is broken.
+        case "$host_os" in
+                         # Guess yes on glibc systems.
+          *-gnu* | gnu*) gl_cv_func_svid_putenv="guessing yes" ;;
+                         # Guess yes on musl systems.
+          *-musl*)       gl_cv_func_svid_putenv="guessing yes" ;;
+                         # Guess no on native Windows.
+          mingw*)        gl_cv_func_svid_putenv="guessing no" ;;
+                         # If we don't know, obey --enable-cross-guesses.
+          *)             gl_cv_func_svid_putenv="$gl_cross_guess_normal" ;;
+        esac
+       ])
+    ])
+  case "$gl_cv_func_svid_putenv" in
+    *yes) ;;
+    *)
+      REPLACE_PUTENV=1
+      ;;
+  esac
+])
+
+# Prerequisites of lib/putenv.c.
+AC_DEFUN([gl_PREREQ_PUTENV],
+[
+  AC_CHECK_DECLS([_putenv])
+])
diff --git a/src/grep/m4/quote.m4 b/src/grep/m4/quote.m4
new file mode 100644
index 0000000..be205c0
--- /dev/null
+++ b/src/grep/m4/quote.m4
@@ -0,0 +1,13 @@
+# quote.m4 serial 6
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2021 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_QUOTE],
+[
+  dnl Prerequisites of lib/quote.c.
+  dnl (none)
+  :
+])
diff --git a/src/grep/m4/quotearg.m4 b/src/grep/m4/quotearg.m4
new file mode 100644
index 0000000..19067f5
--- /dev/null
+++ b/src/grep/m4/quotearg.m4
@@ -0,0 +1,11 @@
+# quotearg.m4 serial 10
+dnl Copyright (C) 2002, 2004-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_QUOTEARG],
+[
+  AC_REQUIRE([AC_C_RESTRICT])
+  :
+])
diff --git a/src/grep/m4/raise.m4 b/src/grep/m4/raise.m4
new file mode 100644
index 0000000..4bf0ca9
--- /dev/null
+++ b/src/grep/m4/raise.m4
@@ -0,0 +1,36 @@
+# raise.m4 serial 4
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_RAISE],
+[
+  AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CHECK_FUNCS([raise])
+  if test $ac_cv_func_raise = no; then
+    HAVE_RAISE=0
+  else
+    m4_ifdef([gl_MSVC_INVAL], [
+      AC_REQUIRE([gl_MSVC_INVAL])
+      if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+        REPLACE_RAISE=1
+      fi
+    ])
+    m4_ifdef([gl_SIGNALBLOCKING], [
+      gl_SIGNALBLOCKING
+      if test $HAVE_POSIX_SIGNALBLOCKING = 0; then
+        m4_ifdef([gl_SIGNAL_SIGPIPE], [
+          gl_SIGNAL_SIGPIPE
+          if test $gl_cv_header_signal_h_SIGPIPE != yes; then
+            REPLACE_RAISE=1
+          fi
+        ], [:])
+      fi
+    ])
+  fi
+])
+
+# Prerequisites of lib/raise.c.
+AC_DEFUN([gl_PREREQ_RAISE], [:])
diff --git a/src/grep/m4/rawmemchr.m4 b/src/grep/m4/rawmemchr.m4
new file mode 100644
index 0000000..452fab1
--- /dev/null
+++ b/src/grep/m4/rawmemchr.m4
@@ -0,0 +1,20 @@
+# rawmemchr.m4 serial 3
+dnl Copyright (C) 2003, 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_RAWMEMCHR],
+[
+  dnl Persuade glibc <string.h> to declare rawmemchr().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+  AC_CHECK_FUNCS([rawmemchr])
+  if test $ac_cv_func_rawmemchr = no; then
+    HAVE_RAWMEMCHR=0
+  fi
+])
+
+# Prerequisites of lib/strchrnul.c.
+AC_DEFUN([gl_PREREQ_RAWMEMCHR], [:])
diff --git a/src/grep/m4/read.m4 b/src/grep/m4/read.m4
new file mode 100644
index 0000000..c162b7c
--- /dev/null
+++ b/src/grep/m4/read.m4
@@ -0,0 +1,28 @@
+# read.m4 serial 5
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_READ],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  m4_ifdef([gl_MSVC_INVAL], [
+    AC_REQUIRE([gl_MSVC_INVAL])
+    if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+      REPLACE_READ=1
+    fi
+  ])
+  dnl This ifdef is just an optimization, to avoid performing a configure
+  dnl check whose result is not used. It does not make the test of
+  dnl GNULIB_UNISTD_H_NONBLOCKING or GNULIB_NONBLOCKING redundant.
+  m4_ifdef([gl_NONBLOCKING_IO], [
+    gl_NONBLOCKING_IO
+    if test $gl_cv_have_nonblocking != yes; then
+      REPLACE_READ=1
+    fi
+  ])
+])
+
+# Prerequisites of lib/read.c.
+AC_DEFUN([gl_PREREQ_READ], [:])
diff --git a/src/grep/m4/readdir.m4 b/src/grep/m4/readdir.m4
new file mode 100644
index 0000000..94dc99c
--- /dev/null
+++ b/src/grep/m4/readdir.m4
@@ -0,0 +1,15 @@
+# readdir.m4 serial 1
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_READDIR],
+[
+  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+
+  AC_CHECK_FUNCS([readdir])
+  if test $ac_cv_func_readdir = no; then
+    HAVE_READDIR=0
+  fi
+])
diff --git a/src/grep/m4/realloc.m4 b/src/grep/m4/realloc.m4
new file mode 100644
index 0000000..0abc418
--- /dev/null
+++ b/src/grep/m4/realloc.m4
@@ -0,0 +1,63 @@
+# realloc.m4 serial 24
+dnl Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# This is adapted with modifications from upstream Autoconf here:
+# https://git.savannah.gnu.org/cgit/autoconf.git/tree/lib/autoconf/functions.m4?id=v2.70#n1455
+AC_DEFUN([_AC_FUNC_REALLOC_IF],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])dnl for cross-compiles
+  AC_CACHE_CHECK([whether realloc (0, 0) returns nonnull],
+    [ac_cv_func_realloc_0_nonnull],
+    [AC_RUN_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <stdlib.h>
+          ]],
+          [[void *p = realloc (0, 0);
+            int result = !p;
+            free (p);
+            return result;]])
+       ],
+       [ac_cv_func_realloc_0_nonnull=yes],
+       [ac_cv_func_realloc_0_nonnull=no],
+       [case "$host_os" in
+          # Guess yes on platforms where we know the result.
+          *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \
+          | gnu* | *-musl* | midnightbsd* \
+          | hpux* | solaris* | cygwin* | mingw* | msys* )
+            ac_cv_func_realloc_0_nonnull="guessing yes" ;;
+          # If we don't know, obey --enable-cross-guesses.
+          *) ac_cv_func_realloc_0_nonnull="$gl_cross_guess_normal" ;;
+        esac
+       ])
+    ])
+  AS_CASE([$ac_cv_func_realloc_0_nonnull], [*yes], [$1], [$2])
+])# AC_FUNC_REALLOC
+
+# gl_FUNC_REALLOC_GNU
+# -------------------
+# Replace realloc if it is not compatible with GNU libc.
+AC_DEFUN([gl_FUNC_REALLOC_GNU],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([gl_FUNC_REALLOC_POSIX])
+  if test $REPLACE_REALLOC = 0; then
+    _AC_FUNC_REALLOC_IF([], [REPLACE_REALLOC=1])
+  fi
+])# gl_FUNC_REALLOC_GNU
+
+# gl_FUNC_REALLOC_POSIX
+# ---------------------
+# Test whether 'realloc' is POSIX compliant (sets errno to ENOMEM when it
+# fails, and doesn't mess up with ptrdiff_t overflow),
+# and replace realloc if it is not.
+AC_DEFUN([gl_FUNC_REALLOC_POSIX],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([gl_FUNC_MALLOC_POSIX])
+  if test $REPLACE_MALLOC = 1; then
+    REPLACE_REALLOC=1
+  fi
+])
diff --git a/src/grep/m4/reallocarray.m4 b/src/grep/m4/reallocarray.m4
new file mode 100644
index 0000000..9d8a626
--- /dev/null
+++ b/src/grep/m4/reallocarray.m4
@@ -0,0 +1,23 @@
+# reallocarray.m4 serial 3
+dnl Copyright (C) 2017-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_REALLOCARRAY],
+[
+  dnl Persuade glibc <stdlib.h> to declare reallocarray.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([gl_CHECK_MALLOC_PTRDIFF])
+  AC_CHECK_FUNCS([reallocarray])
+  if test "$ac_cv_func_reallocarray" = no; then
+    HAVE_REALLOCARRAY=0
+  elif test "$gl_cv_malloc_ptrdiff" = no; then
+    REPLACE_REALLOCARRAY=1
+  fi
+])
+
+# Prerequisites of lib/reallocarray.c.
+AC_DEFUN([gl_PREREQ_REALLOCARRAY], [:])
diff --git a/src/grep/m4/regex.m4 b/src/grep/m4/regex.m4
new file mode 100644
index 0000000..1c7e562
--- /dev/null
+++ b/src/grep/m4/regex.m4
@@ -0,0 +1,396 @@
+# serial 73
+
+# Copyright (C) 1996-2001, 2003-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl Initially derived from code in GNU grep.
+dnl Mostly written by Jim Meyering.
+
+AC_PREREQ([2.50])
+
+AC_DEFUN([gl_REGEX],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_ARG_WITH([included-regex],
+    [AS_HELP_STRING([--without-included-regex],
+                    [don't compile regex; this is the default on systems
+                     with recent-enough versions of the GNU C Library
+                     (use with caution on other systems).])])
+
+  case $with_included_regex in #(
+  yes|no) ac_use_included_regex=$with_included_regex
+        ;;
+  '')
+    # If the system regex support is good enough that it passes the
+    # following run test, then default to *not* using the included regex.c.
+    # If cross compiling, assume the test would fail and use the included
+    # regex.c.
+    AC_CHECK_DECLS_ONCE([alarm])
+    AC_CHECK_HEADERS_ONCE([malloc.h])
+    AC_CACHE_CHECK([for working re_compile_pattern],
+                   [gl_cv_func_re_compile_pattern_working],
+      [AC_RUN_IFELSE(
+        [AC_LANG_PROGRAM(
+          [[#include <regex.h>
+
+            #include <locale.h>
+            #include <limits.h>
+            #include <string.h>
+
+            #if defined M_CHECK_ACTION || HAVE_DECL_ALARM
+            # include <signal.h>
+            # include <unistd.h>
+            #endif
+
+            #if HAVE_MALLOC_H
+            # include <malloc.h>
+            #endif
+
+            #ifdef M_CHECK_ACTION
+            /* Exit with distinguishable exit code.  */
+            static void sigabrt_no_core (int sig) { raise (SIGTERM); }
+            #endif
+          ]],
+          [[int result = 0;
+            static struct re_pattern_buffer regex;
+            unsigned char folded_chars[UCHAR_MAX + 1];
+            int i;
+            const char *s;
+            struct re_registers regs;
+
+            /* Some builds of glibc go into an infinite loop on this
+               test.  Use alarm to force death, and mallopt to avoid
+               malloc recursion in diagnosing the corrupted heap. */
+#if HAVE_DECL_ALARM
+            signal (SIGALRM, SIG_DFL);
+            alarm (2);
+#endif
+#ifdef M_CHECK_ACTION
+            signal (SIGABRT, sigabrt_no_core);
+            mallopt (M_CHECK_ACTION, 2);
+#endif
+
+            if (setlocale (LC_ALL, "en_US.UTF-8"))
+              {
+                {
+                  /* https://sourceware.org/ml/libc-hacker/2006-09/msg00008.html
+                     This test needs valgrind to catch the bug on Debian
+                     GNU/Linux 3.1 x86, but it might catch the bug better
+                     on other platforms and it shouldn't hurt to try the
+                     test here.  */
+                  static char const pat[] = "insert into";
+                  static char const data[] =
+                    "\xFF\0\x12\xA2\xAA\xC4\xB1,K\x12\xC4\xB1*\xACK";
+                  re_set_syntax (RE_SYNTAX_GREP | RE_HAT_LISTS_NOT_NEWLINE
+                                 | RE_ICASE);
+                  memset (&regex, 0, sizeof regex);
+                  s = re_compile_pattern (pat, sizeof pat - 1, &regex);
+                  if (s)
+                    result |= 1;
+                  else
+                    {
+                      if (re_search (&regex, data, sizeof data - 1,
+                                     0, sizeof data - 1, &regs)
+                          != -1)
+                        result |= 1;
+                      regfree (&regex);
+                    }
+                }
+
+                {
+                  /* This test is from glibc bug 15078.
+                     The test case is from Andreas Schwab in
+                     <https://sourceware.org/ml/libc-alpha/2013-01/msg00967.html>.
+                     */
+                  static char const pat[] = "[^x]x";
+                  static char const data[] =
+                    /* <U1000><U103B><U103D><U1014><U103A><U102F><U1015><U103A> */
+                    "\xe1\x80\x80"
+                    "\xe1\x80\xbb"
+                    "\xe1\x80\xbd"
+                    "\xe1\x80\x94"
+                    "\xe1\x80\xba"
+                    "\xe1\x80\xaf"
+                    "\xe1\x80\x95"
+                    "\xe1\x80\xba"
+                    "x";
+                  re_set_syntax (0);
+                  memset (&regex, 0, sizeof regex);
+                  s = re_compile_pattern (pat, sizeof pat - 1, &regex);
+                  if (s)
+                    result |= 1;
+                  else
+                    {
+                      i = re_search (&regex, data, sizeof data - 1,
+                                     0, sizeof data - 1, 0);
+                      if (i != 0 && i != 21)
+                        result |= 1;
+                      regfree (&regex);
+                    }
+                }
+
+                if (! setlocale (LC_ALL, "C"))
+                  return 1;
+              }
+
+            /* This test is from glibc bug 3957, reported by Andrew Mackey.  */
+            re_set_syntax (RE_SYNTAX_EGREP | RE_HAT_LISTS_NOT_NEWLINE);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("a[^x]b", 6, &regex);
+            if (s)
+              result |= 2;
+            else
+              {
+                /* This should fail, but succeeds for glibc-2.5.  */
+                if (re_search (&regex, "a\nb", 3, 0, 3, &regs) != -1)
+                  result |= 2;
+                regfree (&regex);
+              }
+
+            /* This regular expression is from Spencer ere test number 75
+               in grep-2.3.  */
+            re_set_syntax (RE_SYNTAX_POSIX_EGREP);
+            memset (&regex, 0, sizeof regex);
+            for (i = 0; i <= UCHAR_MAX; i++)
+              folded_chars[i] = i;
+            regex.translate = folded_chars;
+            s = re_compile_pattern ("a[[:@:>@:]]b\n", 11, &regex);
+            /* This should fail with _Invalid character class name_ error.  */
+            if (!s)
+              {
+                result |= 4;
+                regfree (&regex);
+              }
+
+            /* Ensure that [b-a] is diagnosed as invalid, when
+               using RE_NO_EMPTY_RANGES. */
+            re_set_syntax (RE_SYNTAX_POSIX_EGREP | RE_NO_EMPTY_RANGES);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("a[b-a]", 6, &regex);
+            if (s == 0)
+              {
+                result |= 8;
+                regfree (&regex);
+              }
+
+            /* This should succeed, but does not for glibc-2.1.3.  */
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("{1", 2, &regex);
+            if (s)
+              result |= 8;
+            else
+              regfree (&regex);
+
+            /* The following example is derived from a problem report
+               against gawk from Jorge Stolfi <stolfi@ic.unicamp.br>.  */
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("[an\371]*n", 7, &regex);
+            if (s)
+              result |= 8;
+            else
+              {
+                /* This should match, but does not for glibc-2.2.1.  */
+                if (re_match (&regex, "an", 2, 0, &regs) != 2)
+                  result |= 8;
+                else
+                  {
+                    free (regs.start);
+                    free (regs.end);
+                  }
+                regfree (&regex);
+              }
+
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("x", 1, &regex);
+            if (s)
+              result |= 8;
+            else
+              {
+                /* glibc-2.2.93 does not work with a negative RANGE argument.  */
+                if (re_search (&regex, "wxy", 3, 2, -2, &regs) != 1)
+                  result |= 8;
+                else
+                  {
+                    free (regs.start);
+                    free (regs.end);
+                  }
+                regfree (&regex);
+              }
+
+            /* The version of regex.c in older versions of gnulib
+               ignored RE_ICASE.  Detect that problem too.  */
+            re_set_syntax (RE_SYNTAX_EMACS | RE_ICASE);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("x", 1, &regex);
+            if (s)
+              result |= 16;
+            else
+              {
+                if (re_search (&regex, "WXY", 3, 0, 3, &regs) < 0)
+                  result |= 16;
+                else
+                  {
+                    free (regs.start);
+                    free (regs.end);
+                  }
+                regfree (&regex);
+              }
+
+            /* Catch a bug reported by Vin Shelton in
+               https://lists.gnu.org/r/bug-coreutils/2007-06/msg00089.html
+               */
+            re_set_syntax (RE_SYNTAX_POSIX_BASIC
+                           & ~RE_CONTEXT_INVALID_DUP
+                           & ~RE_NO_EMPTY_RANGES);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("[[:alnum:]_-]\\\\+\$", 16, &regex);
+            if (s)
+              result |= 32;
+            else
+              regfree (&regex);
+
+            /* REG_STARTEND was added to glibc on 2004-01-15.
+               Reject older versions.  */
+            if (! REG_STARTEND)
+              result |= 64;
+
+            /* Matching with the compiled form of this regexp would provoke
+               an assertion failure prior to glibc-2.28:
+                 regexec.c:1375: pop_fail_stack: Assertion 'num >= 0' failed
+               With glibc-2.28, compilation fails and reports the invalid
+               back reference.  */
+            re_set_syntax (RE_SYNTAX_POSIX_EGREP);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("0|()0|\\\\1|0", 10, &regex);
+            if (!s)
+              {
+                memset (&regs, 0, sizeof regs);
+                i = re_search (&regex, "x", 1, 0, 1, &regs);
+                if (i != -1)
+                  result |= 64;
+                if (0 <= i)
+                  {
+                    free (regs.start);
+                    free (regs.end);
+                  }
+                regfree (&regex);
+              }
+            else
+              {
+                if (strcmp (s, "Invalid back reference"))
+                  result |= 64;
+              }
+
+            /* glibc bug 11053.  */
+            re_set_syntax (RE_SYNTAX_POSIX_BASIC);
+            memset (&regex, 0, sizeof regex);
+            static char const pat_sub2[] = "\\\\(a*\\\\)*a*\\\\1";
+            s = re_compile_pattern (pat_sub2, sizeof pat_sub2 - 1, &regex);
+            if (s)
+              result |= 64;
+            else
+              {
+                memset (&regs, 0, sizeof regs);
+                static char const data[] = "a";
+                int datalen = sizeof data - 1;
+                i = re_search (&regex, data, datalen, 0, datalen, &regs);
+                if (i != 0)
+                  result |= 64;
+                else if (regs.num_regs < 2)
+                  result |= 64;
+                else if (! (regs.start[0] == 0 && regs.end[0] == 1))
+                  result |= 64;
+                else if (! (regs.start[1] == 0 && regs.end[1] == 0))
+                  result |= 64;
+                regfree (&regex);
+                free (regs.start);
+                free (regs.end);
+              }
+
+#if 0
+            /* It would be nice to reject hosts whose regoff_t values are too
+               narrow (including glibc on hosts with 64-bit ptrdiff_t and
+               32-bit int), but we should wait until glibc implements this
+               feature.  Otherwise, support for equivalence classes and
+               multibyte collation symbols would always be broken except
+               when compiling --without-included-regex.   */
+            if (sizeof (regoff_t) < sizeof (ptrdiff_t)
+                || sizeof (regoff_t) < sizeof (ssize_t))
+              result |= 64;
+#endif
+
+            return result;
+          ]])],
+        [gl_cv_func_re_compile_pattern_working=yes],
+        [gl_cv_func_re_compile_pattern_working=no],
+        [case "$host_os" in
+                   # Guess no on native Windows.
+           mingw*) gl_cv_func_re_compile_pattern_working="guessing no" ;;
+                   # Otherwise obey --enable-cross-guesses.
+           *)      gl_cv_func_re_compile_pattern_working="$gl_cross_guess_normal" ;;
+         esac
+        ])
+      ])
+    case "$gl_cv_func_re_compile_pattern_working" in #(
+      *yes) ac_use_included_regex=no;; #(
+      *no) ac_use_included_regex=yes;;
+    esac
+    ;;
+  *) AC_MSG_ERROR([Invalid value for --with-included-regex: $with_included_regex])
+    ;;
+  esac
+
+  if test $ac_use_included_regex = yes; then
+    AC_DEFINE([_REGEX_INCLUDE_LIMITS_H], [1],
+      [Define if you want <regex.h> to include <limits.h>, so that it
+       consistently overrides <limits.h>'s RE_DUP_MAX.])
+    AC_DEFINE([_REGEX_LARGE_OFFSETS], [1],
+      [Define if you want regoff_t to be at least as wide POSIX requires.])
+    AC_DEFINE([re_syntax_options], [rpl_re_syntax_options],
+      [Define to rpl_re_syntax_options if the replacement should be used.])
+    AC_DEFINE([re_set_syntax], [rpl_re_set_syntax],
+      [Define to rpl_re_set_syntax if the replacement should be used.])
+    AC_DEFINE([re_compile_pattern], [rpl_re_compile_pattern],
+      [Define to rpl_re_compile_pattern if the replacement should be used.])
+    AC_DEFINE([re_compile_fastmap], [rpl_re_compile_fastmap],
+      [Define to rpl_re_compile_fastmap if the replacement should be used.])
+    AC_DEFINE([re_search], [rpl_re_search],
+      [Define to rpl_re_search if the replacement should be used.])
+    AC_DEFINE([re_search_2], [rpl_re_search_2],
+      [Define to rpl_re_search_2 if the replacement should be used.])
+    AC_DEFINE([re_match], [rpl_re_match],
+      [Define to rpl_re_match if the replacement should be used.])
+    AC_DEFINE([re_match_2], [rpl_re_match_2],
+      [Define to rpl_re_match_2 if the replacement should be used.])
+    AC_DEFINE([re_set_registers], [rpl_re_set_registers],
+      [Define to rpl_re_set_registers if the replacement should be used.])
+    AC_DEFINE([re_comp], [rpl_re_comp],
+      [Define to rpl_re_comp if the replacement should be used.])
+    AC_DEFINE([re_exec], [rpl_re_exec],
+      [Define to rpl_re_exec if the replacement should be used.])
+    AC_DEFINE([regcomp], [rpl_regcomp],
+      [Define to rpl_regcomp if the replacement should be used.])
+    AC_DEFINE([regexec], [rpl_regexec],
+      [Define to rpl_regexec if the replacement should be used.])
+    AC_DEFINE([regerror], [rpl_regerror],
+      [Define to rpl_regerror if the replacement should be used.])
+    AC_DEFINE([regfree], [rpl_regfree],
+      [Define to rpl_regfree if the replacement should be used.])
+  fi
+])
+
+# Prerequisites of lib/regex.c and lib/regex_internal.c.
+AC_DEFUN([gl_PREREQ_REGEX],
+[
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+  AC_REQUIRE([AC_C_INLINE])
+  AC_REQUIRE([AC_C_RESTRICT])
+  AC_REQUIRE([AC_TYPE_MBSTATE_T])
+  AC_REQUIRE([gl_EEMALLOC])
+  AC_CHECK_HEADERS([libintl.h])
+  AC_CHECK_FUNCS_ONCE([isblank iswctype])
+  AC_CHECK_DECLS([isblank], [], [], [[#include <ctype.h>]])
+])
diff --git a/src/grep/m4/safe-read.m4 b/src/grep/m4/safe-read.m4
new file mode 100644
index 0000000..3cba288
--- /dev/null
+++ b/src/grep/m4/safe-read.m4
@@ -0,0 +1,12 @@
+# safe-read.m4 serial 6
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2021 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Prerequisites of lib/safe-read.c.
+AC_DEFUN([gl_PREREQ_SAFE_READ],
+[
+  AC_REQUIRE([gt_TYPE_SSIZE_T])
+])
diff --git a/src/grep/m4/save-cwd.m4 b/src/grep/m4/save-cwd.m4
new file mode 100644
index 0000000..74cfe96
--- /dev/null
+++ b/src/grep/m4/save-cwd.m4
@@ -0,0 +1,11 @@
+# serial 10
+dnl Copyright (C) 2002-2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Prerequisites for lib/save-cwd.c.
+AC_DEFUN([gl_SAVE_CWD],
+[
+  AC_CHECK_FUNCS_ONCE([fchdir])
+])
diff --git a/src/grep/m4/sched_h.m4 b/src/grep/m4/sched_h.m4
new file mode 100644
index 0000000..a840e3d
--- /dev/null
+++ b/src/grep/m4/sched_h.m4
@@ -0,0 +1,106 @@
+# sched_h.m4 serial 15
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Bruno Haible.
+
+AC_DEFUN_ONCE([gl_SCHED_H],
+[
+  dnl Ensure to expand the default settings once only, before all statements
+  dnl that occur in other macros.
+  AC_REQUIRE([gl_SCHED_H_DEFAULTS])
+
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  AC_CHECK_HEADERS_ONCE([sys/cdefs.h])
+  AC_CHECK_HEADERS([sched.h], [], [],
+    [[#if HAVE_SYS_CDEFS_H
+       #include <sys/cdefs.h>
+      #endif
+    ]])
+  gl_NEXT_HEADERS([sched.h])
+
+  if test "$ac_cv_header_sched_h" = yes; then
+    HAVE_SCHED_H=1
+  else
+    HAVE_SCHED_H=0
+  fi
+  AC_SUBST([HAVE_SCHED_H])
+
+  if test "$HAVE_SCHED_H" = 1; then
+    AC_CHECK_TYPE([struct sched_param],
+      [HAVE_STRUCT_SCHED_PARAM=1], [HAVE_STRUCT_SCHED_PARAM=0],
+      [[#if HAVE_SYS_CDEFS_H
+         #include <sys/cdefs.h>
+        #endif
+        #include <sched.h>
+      ]])
+  else
+    HAVE_STRUCT_SCHED_PARAM=0
+    case "$host_os" in
+      os2*)
+        dnl On OS/2 kLIBC, struct sched_param is in spawn.h.
+        AC_CHECK_TYPE([struct sched_param],
+          [HAVE_STRUCT_SCHED_PARAM=1], [],
+          [#include <spawn.h>])
+        ;;
+      vms)
+        dnl On OpenVMS 7.2 or newer, struct sched_param is in pthread.h.
+        AC_CHECK_TYPE([struct sched_param],
+          [HAVE_STRUCT_SCHED_PARAM=1], [],
+          [#include <pthread.h>])
+        ;;
+    esac
+  fi
+  AC_SUBST([HAVE_STRUCT_SCHED_PARAM])
+
+  if test "$ac_cv_header_sys_cdefs_h" = yes; then
+    HAVE_SYS_CDEFS_H=1
+  else
+    HAVE_SYS_CDEFS_H=0
+  fi
+  AC_SUBST([HAVE_SYS_CDEFS_H])
+
+  dnl Ensure the type pid_t gets defined.
+  AC_REQUIRE([AC_TYPE_PID_T])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use, if it is not common
+  dnl enough to be declared everywhere.
+  gl_WARN_ON_USE_PREPARE([[#include <sched.h>
+    ]], [sched_yield])
+])
+
+# gl_SCHED_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_SCHED_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_SCHED_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_SCHED_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_SCHED_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SCHED_YIELD])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_SCHED_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_SCHED_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_SCHED_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_SCHED_YIELD=1;    AC_SUBST([HAVE_SCHED_YIELD])
+  REPLACE_SCHED_YIELD=0; AC_SUBST([REPLACE_SCHED_YIELD])
+])
diff --git a/src/grep/m4/select.m4 b/src/grep/m4/select.m4
new file mode 100644
index 0000000..72c068f
--- /dev/null
+++ b/src/grep/m4/select.m4
@@ -0,0 +1,117 @@
+# select.m4 serial 13
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_SELECT],
+[
+  AC_REQUIRE([gl_SYS_SELECT_H])
+  AC_REQUIRE([AC_C_RESTRICT])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_REQUIRE([gl_SOCKETS])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    REPLACE_SELECT=1
+  else
+    dnl On Interix 3.5, select(0, NULL, NULL, NULL, timeout) fails with error
+    dnl EFAULT.
+    AC_CHECK_HEADERS_ONCE([sys/select.h])
+    AC_CACHE_CHECK([whether select supports a 0 argument],
+      [gl_cv_func_select_supports0],
+      [
+        AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <sys/types.h>
+#include <sys/time.h>
+#if HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+int main ()
+{
+  struct timeval timeout;
+  timeout.tv_sec = 0;
+  timeout.tv_usec = 5;
+  return select (0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &timeout) < 0;
+}]])], [gl_cv_func_select_supports0=yes], [gl_cv_func_select_supports0=no],
+          [
+changequote(,)dnl
+           case "$host_os" in
+                       # Guess no on Interix.
+             interix*) gl_cv_func_select_supports0="guessing no";;
+                       # Guess yes otherwise.
+             *)        gl_cv_func_select_supports0="guessing yes";;
+           esac
+changequote([,])dnl
+          ])
+      ])
+    case "$gl_cv_func_select_supports0" in
+      *yes) ;;
+      *) REPLACE_SELECT=1 ;;
+    esac
+
+    dnl On FreeBSD 8.2, select() doesn't always reject bad fds.
+    AC_CACHE_CHECK([whether select detects invalid fds],
+      [gl_cv_func_select_detects_ebadf],
+      [
+        AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+#include <sys/types.h>
+#include <sys/time.h>
+#if HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
+#include <unistd.h>
+#include <errno.h>
+]GL_MDA_DEFINES],
+[[
+  fd_set set;
+  dup2(0, 16);
+  FD_ZERO(&set);
+  FD_SET(16, &set);
+  close(16);
+  struct timeval timeout;
+  timeout.tv_sec = 0;
+  timeout.tv_usec = 5;
+  return select (17, &set, NULL, NULL, &timeout) != -1 || errno != EBADF;
+]])], [gl_cv_func_select_detects_ebadf=yes],
+      [gl_cv_func_select_detects_ebadf=no],
+          [
+           case "$host_os" in
+                             # Guess yes on Linux systems.
+            linux-* | linux) gl_cv_func_select_detects_ebadf="guessing yes" ;;
+                             # Guess yes on glibc systems.
+            *-gnu* | gnu*)   gl_cv_func_select_detects_ebadf="guessing yes" ;;
+                             # If we don't know, obey --enable-cross-guesses.
+            *)               gl_cv_func_select_detects_ebadf="$gl_cross_guess_normal" ;;
+           esac
+          ])
+      ])
+    case $gl_cv_func_select_detects_ebadf in
+      *yes) ;;
+      *) REPLACE_SELECT=1 ;;
+    esac
+  fi
+
+  dnl Determine the needed libraries.
+  LIB_SELECT="$LIBSOCKET"
+  if test $REPLACE_SELECT = 1; then
+    case "$host_os" in
+      mingw*)
+        dnl On the MSVC platform, the function MsgWaitForMultipleObjects
+        dnl (used in lib/select.c) requires linking with -luser32. On mingw,
+        dnl it is implicit.
+        AC_LINK_IFELSE(
+          [AC_LANG_SOURCE([[
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+int
+main ()
+{
+  MsgWaitForMultipleObjects (0, NULL, 0, 0, 0);
+  return 0;
+}]])],
+          [],
+          [LIB_SELECT="$LIB_SELECT -luser32"])
+        ;;
+    esac
+  fi
+  AC_SUBST([LIB_SELECT])
+])
diff --git a/src/grep/m4/setenv.m4 b/src/grep/m4/setenv.m4
new file mode 100644
index 0000000..f79a278
--- /dev/null
+++ b/src/grep/m4/setenv.m4
@@ -0,0 +1,166 @@
+# setenv.m4 serial 30
+dnl Copyright (C) 2001-2004, 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_SETENV],
+[
+  AC_REQUIRE([gl_FUNC_SETENV_SEPARATE])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  if test $ac_cv_func_setenv = no; then
+    HAVE_SETENV=0
+  else
+    AC_CACHE_CHECK([whether setenv validates arguments],
+      [gl_cv_func_setenv_works],
+      [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+       #include <stdlib.h>
+       #include <errno.h>
+       #include <string.h>
+      ]], [[
+       int result = 0;
+       {
+         if (setenv ("", "", 0) != -1)
+           result |= 1;
+         else if (errno != EINVAL)
+           result |= 2;
+       }
+       {
+         if (setenv ("a", "=", 1) != 0)
+           result |= 4;
+         else if (strcmp (getenv ("a"), "=") != 0)
+           result |= 8;
+       }
+       return result;
+      ]])],
+      [gl_cv_func_setenv_works=yes], [gl_cv_func_setenv_works=no],
+      [case "$host_os" in
+                        # Guess yes on glibc systems.
+         *-gnu* | gnu*) gl_cv_func_setenv_works="guessing yes" ;;
+                        # Guess yes on musl systems.
+         *-musl*)       gl_cv_func_setenv_works="guessing yes" ;;
+                        # If we don't know, obey --enable-cross-guesses.
+         *)             gl_cv_func_setenv_works="$gl_cross_guess_normal" ;;
+       esac
+      ])])
+    case "$gl_cv_func_setenv_works" in
+      *yes) ;;
+      *)
+        REPLACE_SETENV=1
+        ;;
+    esac
+  fi
+])
+
+# Like gl_FUNC_SETENV, except prepare for separate compilation
+# (no REPLACE_SETENV, no AC_LIBOBJ).
+AC_DEFUN([gl_FUNC_SETENV_SEPARATE],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_CHECK_DECLS_ONCE([setenv])
+  if test $ac_cv_have_decl_setenv = no; then
+    HAVE_DECL_SETENV=0
+  fi
+  AC_CHECK_FUNCS_ONCE([setenv])
+  gl_PREREQ_SETENV
+])
+
+AC_DEFUN([gl_FUNC_UNSETENV],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CHECK_DECLS_ONCE([unsetenv])
+  if test $ac_cv_have_decl_unsetenv = no; then
+    HAVE_DECL_UNSETENV=0
+  fi
+  AC_CHECK_FUNCS([unsetenv])
+  if test $ac_cv_func_unsetenv = no; then
+    HAVE_UNSETENV=0
+  else
+    HAVE_UNSETENV=1
+    dnl Some BSDs return void, failing to do error checking.
+    AC_CACHE_CHECK([for unsetenv() return type], [gt_cv_func_unsetenv_ret],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[
+#undef _BSD
+#define _BSD 1 /* unhide unsetenv declaration in OSF/1 5.1 <stdlib.h> */
+#include <stdlib.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+int unsetenv (const char *name);
+            ]],
+            [[]])],
+         [gt_cv_func_unsetenv_ret='int'],
+         [gt_cv_func_unsetenv_ret='void'])])
+    if test $gt_cv_func_unsetenv_ret = 'void'; then
+      AC_DEFINE([VOID_UNSETENV], [1], [Define to 1 if unsetenv returns void
+       instead of int.])
+      REPLACE_UNSETENV=1
+    fi
+
+    dnl Solaris 10 unsetenv does not remove all copies of a name.
+    dnl Haiku alpha 2 unsetenv gets confused by assignment to environ.
+    dnl OpenBSD 4.7 unsetenv("") does not fail.
+    AC_CACHE_CHECK([whether unsetenv obeys POSIX],
+      [gl_cv_func_unsetenv_works],
+      [AC_RUN_IFELSE(
+         [AC_LANG_PROGRAM([[
+            #include <stdlib.h>
+            #include <errno.h>
+            extern char **environ;
+           ]GL_MDA_DEFINES],
+           [[
+            char entry1[] = "a=1";
+            char entry2[] = "b=2";
+            char *env[] = { entry1, entry2, NULL };
+            if (putenv ((char *) "a=1")) return 1;
+            if (putenv (entry2)) return 2;
+            entry2[0] = 'a';
+            unsetenv ("a");
+            if (getenv ("a")) return 3;
+            if (!unsetenv ("") || errno != EINVAL) return 4;
+            entry2[0] = 'b';
+            environ = env;
+            if (!getenv ("a")) return 5;
+            entry2[0] = 'a';
+            unsetenv ("a");
+            if (getenv ("a")) return 6;
+           ]])],
+         [gl_cv_func_unsetenv_works=yes],
+         [gl_cv_func_unsetenv_works=no],
+         [case "$host_os" in
+                    # Guess yes on glibc systems.
+            *-gnu*) gl_cv_func_unsetenv_works="guessing yes" ;;
+                    # If we don't know, obey --enable-cross-guesses.
+            *)      gl_cv_func_unsetenv_works="$gl_cross_guess_normal" ;;
+          esac
+         ])
+      ])
+    case "$gl_cv_func_unsetenv_works" in
+      *yes) ;;
+      *)
+        REPLACE_UNSETENV=1
+        ;;
+    esac
+  fi
+])
+
+# Prerequisites of lib/setenv.c.
+AC_DEFUN([gl_PREREQ_SETENV],
+[
+  AC_REQUIRE([AC_FUNC_ALLOCA])
+  AC_REQUIRE([gl_ENVIRON])
+  AC_CHECK_HEADERS_ONCE([unistd.h])
+  AC_CHECK_HEADERS([search.h])
+  AC_CHECK_FUNCS([tsearch])
+])
+
+# Prerequisites of lib/unsetenv.c.
+AC_DEFUN([gl_PREREQ_UNSETENV],
+[
+  AC_REQUIRE([gl_ENVIRON])
+  AC_CHECK_HEADERS_ONCE([unistd.h])
+])
diff --git a/src/grep/m4/setlocale.m4 b/src/grep/m4/setlocale.m4
new file mode 100644
index 0000000..305dcaa
--- /dev/null
+++ b/src/grep/m4/setlocale.m4
@@ -0,0 +1,85 @@
+# setlocale.m4 serial 7
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_SETLOCALE],
+[
+  AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
+  AC_REQUIRE([gl_FUNC_SETLOCALE_NULL])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  dnl Test whether we need to improve on the general working of setlocale.
+  NEED_SETLOCALE_IMPROVED=0
+  case "$host_os" in
+    dnl On native Windows systems, setlocale(category,NULL) does not look at
+    dnl the environment variables LC_ALL, category, and LANG.
+    mingw*) NEED_SETLOCALE_IMPROVED=1 ;;
+    dnl On Cygwin 1.5.x, setlocale always succeeds but setlocale(LC_CTYPE,NULL)
+    dnl is then still "C".
+    cygwin*)
+      case `uname -r` in
+        1.5.*) NEED_SETLOCALE_IMPROVED=1 ;;
+      esac
+      ;;
+    dnl On Android 4.3, setlocale(category,"C") always fails.
+    *)
+      AC_CACHE_CHECK([whether setlocale supports the C locale],
+        [gl_cv_func_setlocale_works],
+        [AC_RUN_IFELSE(
+           [AC_LANG_SOURCE([[
+#include <locale.h>
+int main ()
+{
+  return setlocale (LC_ALL, "C") == NULL;
+}]])],
+           [gl_cv_func_setlocale_works=yes],
+           [gl_cv_func_setlocale_works=no],
+           [case "$host_os" in
+                               # Guess no on Android.
+              linux*-android*) gl_cv_func_setlocale_works="guessing no";;
+                               # Guess yes otherwise.
+              *)               gl_cv_func_setlocale_works="guessing yes";;
+            esac
+           ])
+        ])
+      case "$gl_cv_func_setlocale_works" in
+        *yes) ;;
+        *) NEED_SETLOCALE_IMPROVED=1 ;;
+      esac
+      ;;
+  esac
+  AC_DEFINE_UNQUOTED([NEED_SETLOCALE_IMPROVED], [$NEED_SETLOCALE_IMPROVED],
+    [Define to 1 to enable general improvements of setlocale.])
+
+  dnl Test whether we need a multithread-safe setlocale(category,NULL).
+  NEED_SETLOCALE_MTSAFE=0
+  if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then
+    NEED_SETLOCALE_MTSAFE=1
+  fi
+  AC_DEFINE_UNQUOTED([NEED_SETLOCALE_MTSAFE], [$NEED_SETLOCALE_MTSAFE],
+    [Define to 1 to enable a multithread-safety fix of setlocale.])
+
+  if test $NEED_SETLOCALE_IMPROVED = 1 || test $NEED_SETLOCALE_MTSAFE = 1; then
+    REPLACE_SETLOCALE=1
+  fi
+
+  if test $NEED_SETLOCALE_MTSAFE = 1; then
+    LIB_SETLOCALE="$LIB_SETLOCALE_NULL"
+  else
+    LIB_SETLOCALE=
+  fi
+  dnl LIB_SETLOCALE is expected to be '-pthread' or '-lpthread' on AIX with gcc
+  dnl or xlc, and empty otherwise.
+  AC_SUBST([LIB_SETLOCALE])
+])
+
+# Prerequisites of lib/setlocale.c.
+AC_DEFUN([gl_PREREQ_SETLOCALE],
+[
+  dnl No need to check for CFLocaleCopyPreferredLanguages and
+  dnl CFPreferencesCopyAppValue because lib/setlocale.c is not used on Mac OS X.
+  dnl (The Mac OS X specific code is only used in libintl.)
+  :
+])
diff --git a/src/grep/m4/setlocale_null.m4 b/src/grep/m4/setlocale_null.m4
new file mode 100644
index 0000000..2c958ed
--- /dev/null
+++ b/src/grep/m4/setlocale_null.m4
@@ -0,0 +1,98 @@
+# setlocale_null.m4 serial 5
+dnl Copyright (C) 2019-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_SETLOCALE_NULL],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_PTHREADLIB])
+  AC_CHECK_HEADERS_ONCE([threads.h])
+
+  AC_CACHE_CHECK([whether setlocale (LC_ALL, NULL) is multithread-safe],
+    [gl_cv_func_setlocale_null_all_mtsafe],
+    [case "$host_os" in
+       # Guess no on musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin.
+       *-musl* | darwin* | freebsd* | midnightbsd* | netbsd* | openbsd* | aix* | haiku* | cygwin*)
+         gl_cv_func_setlocale_null_all_mtsafe=no ;;
+       # Guess yes on glibc, HP-UX, IRIX, Solaris, native Windows.
+       *-gnu* | gnu* | hpux* | irix* | solaris* | mingw*)
+         gl_cv_func_setlocale_null_all_mtsafe=yes ;;
+       # If we don't know, obey --enable-cross-guesses.
+       *)
+         gl_cv_func_setlocale_null_all_mtsafe="$gl_cross_guess_normal" ;;
+     esac
+    ])
+  dnl On platforms without multithreading, there is no issue.
+  case "$host_os" in
+    mingw*) ;;
+    *)
+      if test $gl_pthread_api = no && test $ac_cv_header_threads_h = no; then
+        gl_cv_func_setlocale_null_all_mtsafe="trivially yes"
+      fi
+      ;;
+  esac
+  case "$gl_cv_func_setlocale_null_all_mtsafe" in
+    *yes) SETLOCALE_NULL_ALL_MTSAFE=1 ;;
+    *)    SETLOCALE_NULL_ALL_MTSAFE=0 ;;
+  esac
+  AC_DEFINE_UNQUOTED([SETLOCALE_NULL_ALL_MTSAFE], [$SETLOCALE_NULL_ALL_MTSAFE],
+    [Define to 1 if setlocale (LC_ALL, NULL) is multithread-safe.])
+
+  dnl This is about a single category (not LC_ALL).
+  AC_CACHE_CHECK([whether setlocale (category, NULL) is multithread-safe],
+    [gl_cv_func_setlocale_null_one_mtsafe],
+    [case "$host_os" in
+       # Guess no on OpenBSD, AIX.
+       openbsd* | aix*)
+         gl_cv_func_setlocale_null_one_mtsafe=no ;;
+       # Guess yes on glibc, musl libc, macOS, FreeBSD, NetBSD, HP-UX, IRIX, Solaris, Haiku, Cygwin, native Windows.
+       *-gnu* | gnu* | *-musl* | darwin* | freebsd* | midnightbsd* | netbsd* | hpux* | irix* | solaris* | haiku* | cygwin* | mingw*)
+         gl_cv_func_setlocale_null_one_mtsafe=yes ;;
+       # If we don't know, obey --enable-cross-guesses.
+       *)
+         gl_cv_func_setlocale_null_one_mtsafe="$gl_cross_guess_normal" ;;
+     esac
+    ])
+  dnl On platforms without multithreading, there is no issue.
+  case "$host_os" in
+    mingw*) ;;
+    *)
+      if test $gl_pthread_api = no && test $ac_cv_header_threads_h = no; then
+        gl_cv_func_setlocale_null_one_mtsafe="trivially yes"
+      fi
+      ;;
+  esac
+  case "$gl_cv_func_setlocale_null_one_mtsafe" in
+    *yes) SETLOCALE_NULL_ONE_MTSAFE=1 ;;
+    *)    SETLOCALE_NULL_ONE_MTSAFE=0 ;;
+  esac
+  AC_DEFINE_UNQUOTED([SETLOCALE_NULL_ONE_MTSAFE], [$SETLOCALE_NULL_ONE_MTSAFE],
+    [Define to 1 if setlocale (category, NULL) is multithread-safe.])
+
+  dnl Determine link dependencies of lib/setlocale_null.c and lib/setlocale-lock.c.
+  if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then
+    case "$host_os" in
+      mingw*) LIB_SETLOCALE_NULL= ;;
+      *)
+        gl_WEAK_SYMBOLS
+        case "$gl_cv_have_weak" in
+          *yes) LIB_SETLOCALE_NULL= ;;
+          *)    LIB_SETLOCALE_NULL="$LIBPTHREAD" ;;
+        esac
+        ;;
+    esac
+  else
+    LIB_SETLOCALE_NULL=
+  fi
+  dnl LIB_SETLOCALE_NULL is expected to be '-pthread' or '-lpthread' on AIX
+  dnl with gcc or xlc, and empty otherwise.
+  AC_SUBST([LIB_SETLOCALE_NULL])
+])
+
+# Prerequisites of lib/setlocale-lock.c.
+AC_DEFUN([gl_PREREQ_SETLOCALE_LOCK],
+[
+  gl_VISIBILITY
+])
diff --git a/src/grep/m4/sigaction.m4 b/src/grep/m4/sigaction.m4
new file mode 100644
index 0000000..a8c1d15
--- /dev/null
+++ b/src/grep/m4/sigaction.m4
@@ -0,0 +1,40 @@
+# sigaction.m4 serial 7
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Determine if sigaction interface is present.
+AC_DEFUN([gl_SIGACTION],
+[
+  AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
+  AC_CHECK_FUNCS_ONCE([sigaction])
+  if test $ac_cv_func_sigaction = yes; then
+    AC_CHECK_MEMBERS([struct sigaction.sa_sigaction], , ,
+                     [[#include <signal.h>]])
+    if test $ac_cv_member_struct_sigaction_sa_sigaction = no; then
+      HAVE_STRUCT_SIGACTION_SA_SIGACTION=0
+    fi
+  else
+    HAVE_SIGACTION=0
+  fi
+])
+
+# Prerequisites of the part of lib/signal.in.h and of lib/sigaction.c.
+AC_DEFUN([gl_PREREQ_SIGACTION],
+[
+  AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
+  AC_REQUIRE([AC_C_RESTRICT])
+  AC_REQUIRE([AC_TYPE_UID_T])
+  AC_REQUIRE([gl_PREREQ_SIG_HANDLER_H])
+  AC_CHECK_FUNCS_ONCE([sigaltstack siginterrupt])
+  AC_CHECK_TYPES([siginfo_t], [], [], [[
+#include <signal.h>
+  ]])
+  if test $ac_cv_type_siginfo_t = no; then
+    HAVE_SIGINFO_T=0
+  fi
+])
+
+# Prerequisites of lib/sig-handler.h.
+AC_DEFUN([gl_PREREQ_SIG_HANDLER_H], [:])
diff --git a/src/grep/m4/sigaltstack.m4 b/src/grep/m4/sigaltstack.m4
new file mode 100644
index 0000000..6dbd677
--- /dev/null
+++ b/src/grep/m4/sigaltstack.m4
@@ -0,0 +1,197 @@
+# sigaltstack.m4 serial 15
+dnl Copyright (C) 2002-2021 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl Written by Bruno Haible and Eric Blake.
+
+AC_DEFUN([SV_SIGALTSTACK],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  AC_CHECK_FUNCS_ONCE([sigaltstack setrlimit])
+
+  if test "$ac_cv_func_sigaltstack" = yes; then
+    AC_CHECK_TYPE([stack_t], ,
+      [AC_DEFINE(stack_t, [struct sigaltstack],
+         [Define to 'struct sigaltstack' if that's the type of the argument to sigaltstack])
+      ],
+      [
+#include <signal.h>
+#if HAVE_SYS_SIGNAL_H
+# include <sys/signal.h>
+#endif
+      ])
+  fi
+
+  AC_CACHE_CHECK([for working sigaltstack], [sv_cv_sigaltstack], [
+    if test "$ac_cv_func_sigaltstack" = yes; then
+      case "$host_os" in
+        macos* | darwin[[6-9]]* | darwin[[1-9]][[0-9]]*)
+          # On MacOS X 10.2 or newer, just assume that if it compiles, it will
+          # work. If we were to perform the real test, 1 Crash Report dialog
+          # window would pop up.
+          AC_LINK_IFELSE([
+            AC_LANG_PROGRAM([[#include <signal.h>]],
+              [[int x = SA_ONSTACK; stack_t ss; sigaltstack ((stack_t*)0, &ss);]])],
+            [sv_cv_sigaltstack="guessing yes"],
+            [sv_cv_sigaltstack=no])
+          ;;
+        *)
+          AC_RUN_IFELSE([
+            AC_LANG_SOURCE([[
+#include <stdlib.h>
+#include <signal.h>
+#if HAVE_SYS_SIGNAL_H
+# include <sys/signal.h>
+#endif
+#if HAVE_SETRLIMIT
+# include <sys/types.h>
+# include <sys/time.h>
+# include <sys/resource.h>
+#endif
+void stackoverflow_handler (int sig)
+{
+  /* If we get here, the stack overflow was caught.  */
+  exit (0);
+}
+volatile int * recurse_1 (volatile int n, volatile int *p)
+{
+  if (n >= 0)
+    *recurse_1 (n + 1, p) += n;
+  return p;
+}
+int recurse (volatile int n)
+{
+  int sum = 0;
+  return *recurse_1 (n, &sum);
+}
+char mystack[2 * (1 << 24)];
+int main ()
+{
+  stack_t altstack;
+  struct sigaction action;
+#if defined HAVE_SETRLIMIT && defined RLIMIT_STACK
+  /* Before starting the endless recursion, try to be friendly to the user's
+     machine.  On some Linux 2.2.x systems, there is no stack limit for user
+     processes at all.  We don't want to kill such systems.  */
+  struct rlimit rl;
+  rl.rlim_cur = rl.rlim_max = 0x100000; /* 1 MB */
+  setrlimit (RLIMIT_STACK, &rl);
+#endif
+  /* Install the alternate stack.  Use the midpoint of mystack, to guard
+     against a buggy interpretation of ss_sp on IRIX.  */
+#ifdef SIGSTKSZ
+  if (sizeof mystack / 2 < SIGSTKSZ)
+    exit (3);
+#endif
+  altstack.ss_sp = mystack + sizeof mystack / 2;
+  altstack.ss_size = sizeof mystack / 2;
+  altstack.ss_flags = 0; /* no SS_DISABLE */
+  if (sigaltstack (&altstack, NULL) < 0)
+    exit (1);
+  /* Install the SIGSEGV handler.  */
+  sigemptyset (&action.sa_mask);
+  action.sa_handler = &stackoverflow_handler;
+  action.sa_flags = SA_ONSTACK;
+  sigaction (SIGSEGV, &action, (struct sigaction *) NULL);
+  sigaction (SIGBUS, &action, (struct sigaction *) NULL);
+  /* Provoke a stack overflow.  */
+  recurse (0);
+  exit (2);
+}]])],
+            [sv_cv_sigaltstack=yes],
+            [sv_cv_sigaltstack=no],
+            [
+              dnl FIXME: Put in some more known values here.
+              case "$host_os" in
+                *)
+                  AC_LINK_IFELSE([
+                    AC_LANG_PROGRAM([[#include <signal.h>]],
+                      [[int x = SA_ONSTACK; stack_t ss; sigaltstack ((stack_t*)0, &ss);]])],
+                    [sv_cv_sigaltstack="guessing yes"],
+                    [sv_cv_sigaltstack=no])
+                  ;;
+              esac
+            ])
+          ;;
+      esac
+    else
+      sv_cv_sigaltstack=no
+    fi
+  ])
+  if test "$sv_cv_sigaltstack" != no; then
+    AC_DEFINE([HAVE_WORKING_SIGALTSTACK], [1],
+      [Define if you have the sigaltstack() function and it works.])
+
+    dnl The ss_sp field of a stack_t is, according to POSIX, the lowest address
+    dnl of the memory block designated as an alternate stack. But IRIX 5.3
+    dnl interprets it as the highest address!
+    AC_CACHE_CHECK([for correct stack_t interpretation],
+      [sv_cv_sigaltstack_low_base], [
+      AC_RUN_IFELSE([
+        AC_LANG_SOURCE([[
+#include <stdlib.h>
+#include <signal.h>
+#if HAVE_SYS_SIGNAL_H
+# include <sys/signal.h>
+#endif
+volatile char *stack_lower_bound;
+volatile char *stack_upper_bound;
+static void check_stack_location (volatile char *addr)
+{
+  if (addr >= stack_lower_bound && addr <= stack_upper_bound)
+    exit (0);
+  else
+    exit (1);
+}
+static void stackoverflow_handler (int sig)
+{
+  char dummy;
+  check_stack_location (&dummy);
+}
+char mystack[2 * (1 << 24)];
+int main ()
+{
+  stack_t altstack;
+  struct sigaction action;
+  /* Install the alternate stack.  */
+  altstack.ss_sp = mystack + sizeof mystack / 2;
+  altstack.ss_size = sizeof mystack / 2;
+  stack_lower_bound = (char *) altstack.ss_sp;
+  stack_upper_bound = (char *) altstack.ss_sp + altstack.ss_size - 1;
+  altstack.ss_flags = 0; /* no SS_DISABLE */
+  if (sigaltstack (&altstack, NULL) < 0)
+    exit (2);
+  /* Install the SIGSEGV handler.  */
+  sigemptyset (&action.sa_mask);
+  action.sa_handler = &stackoverflow_handler;
+  action.sa_flags = SA_ONSTACK;
+  if (sigaction (SIGSEGV, &action, (struct sigaction *) NULL) < 0)
+    exit(3);
+  /* Provoke a SIGSEGV.  */
+  raise (SIGSEGV);
+  exit (3);
+}]])],
+      [sv_cv_sigaltstack_low_base=yes],
+      [sv_cv_sigaltstack_low_base=no],
+      [
+        dnl FIXME: Put in some more known values here.
+        case "$host_os" in
+          irix5*) sv_cv_sigaltstack_low_base="no" ;;
+          *)      sv_cv_sigaltstack_low_base="guessing yes" ;;
+        esac
+      ])
+    ])
+    if test "$sv_cv_sigaltstack_low_base" = no; then
+      AC_DEFINE([SIGALTSTACK_SS_REVERSED], [1],
+        [Define if sigaltstack() interprets the stack_t.ss_sp field incorrectly,
+         as the highest address of the alternate stack range rather than as the
+         lowest address.])
+    fi
+  fi
+])
diff --git a/src/grep/m4/signal_h.m4 b/src/grep/m4/signal_h.m4
new file mode 100644
index 0000000..8b93880
--- /dev/null
+++ b/src/grep/m4/signal_h.m4
@@ -0,0 +1,100 @@
+# signal_h.m4 serial 22
+dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_SIGNAL_H],
+[
+  AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
+  AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T])
+  gl_NEXT_HEADERS([signal.h])
+
+# AIX declares sig_atomic_t to already include volatile, and C89 compilers
+# then choke on 'volatile sig_atomic_t'.  C99 requires that it compile.
+  AC_CHECK_TYPE([volatile sig_atomic_t], [],
+    [HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=0], [[
+#include <signal.h>
+    ]])
+
+  dnl Ensure the type pid_t gets defined.
+  AC_REQUIRE([AC_TYPE_PID_T])
+
+  AC_REQUIRE([AC_TYPE_UID_T])
+
+  dnl Persuade glibc <signal.h> to define sighandler_t.
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+  AC_CHECK_TYPE([sighandler_t], [], [HAVE_SIGHANDLER_T=0], [[
+#include <signal.h>
+    ]])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <signal.h>
+    ]], [pthread_sigmask sigaction
+    sigaddset sigdelset sigemptyset sigfillset sigismember
+    sigpending sigprocmask])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+])
+
+AC_DEFUN([gl_CHECK_TYPE_SIGSET_T],
+[
+  AC_CHECK_TYPES([sigset_t],
+    [gl_cv_type_sigset_t=yes], [gl_cv_type_sigset_t=no],
+    [[
+      #include <signal.h>
+      /* Mingw defines sigset_t not in <signal.h>, but in <sys/types.h>.  */
+      #include <sys/types.h>
+    ]])
+  if test $gl_cv_type_sigset_t != yes; then
+    HAVE_SIGSET_T=0
+  fi
+])
+
+# gl_SIGNAL_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_SIGNAL_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_SIGNAL_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_SIGNAL_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_SIGNAL_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTHREAD_SIGMASK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RAISE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGNAL_H_SIGPIPE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGPROCMASK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGACTION])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_SIGNAL_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_SIGNAL_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_POSIX_SIGNALBLOCKING=1; AC_SUBST([HAVE_POSIX_SIGNALBLOCKING])
+  HAVE_PTHREAD_SIGMASK=1;      AC_SUBST([HAVE_PTHREAD_SIGMASK])
+  HAVE_RAISE=1;                AC_SUBST([HAVE_RAISE])
+  HAVE_SIGSET_T=1;             AC_SUBST([HAVE_SIGSET_T])
+  HAVE_SIGINFO_T=1;            AC_SUBST([HAVE_SIGINFO_T])
+  HAVE_SIGACTION=1;            AC_SUBST([HAVE_SIGACTION])
+  HAVE_STRUCT_SIGACTION_SA_SIGACTION=1;
+                               AC_SUBST([HAVE_STRUCT_SIGACTION_SA_SIGACTION])
+  HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=1;
+                               AC_SUBST([HAVE_TYPE_VOLATILE_SIG_ATOMIC_T])
+  HAVE_SIGHANDLER_T=1;         AC_SUBST([HAVE_SIGHANDLER_T])
+  REPLACE_PTHREAD_SIGMASK=0;   AC_SUBST([REPLACE_PTHREAD_SIGMASK])
+  REPLACE_RAISE=0;             AC_SUBST([REPLACE_RAISE])
+])
diff --git a/src/grep/m4/signalblocking.m4 b/src/grep/m4/signalblocking.m4
new file mode 100644
index 0000000..bfd76b7
--- /dev/null
+++ b/src/grep/m4/signalblocking.m4
@@ -0,0 +1,23 @@
+# signalblocking.m4 serial 17
+dnl Copyright (C) 2001-2002, 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Determine available signal blocking primitives. Three different APIs exist:
+# 1) POSIX: sigemptyset, sigaddset, sigprocmask
+# 2) SYSV: sighold, sigrelse
+# 3) BSD: sigblock, sigsetmask
+# For simplicity, here we check only for the POSIX signal blocking.
+AC_DEFUN([gl_SIGNALBLOCKING],
+[
+  AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
+  AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T])
+  HAVE_POSIX_SIGNALBLOCKING=0
+  if test "$gl_cv_type_sigset_t" = yes; then
+    AC_CHECK_FUNC([sigprocmask], [HAVE_POSIX_SIGNALBLOCKING=1])
+  fi
+])
+
+# Prerequisites of lib/sigprocmask.c.
+AC_DEFUN([gl_PREREQ_SIGPROCMASK], [:])
diff --git a/src/grep/m4/size_max.m4 b/src/grep/m4/size_max.m4
new file mode 100644
index 0000000..1d41ce9
--- /dev/null
+++ b/src/grep/m4/size_max.m4
@@ -0,0 +1,75 @@
+# size_max.m4 serial 12
+dnl Copyright (C) 2003, 2005-2006, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_PREREQ([2.61])
+
+AC_DEFUN([gl_SIZE_MAX],
+[
+  AC_CHECK_HEADERS([stdint.h])
+  dnl First test whether the system already has SIZE_MAX.
+  AC_CACHE_CHECK([for SIZE_MAX], [gl_cv_size_max], [
+    gl_cv_size_max=no
+    AC_EGREP_CPP([Found it], [
+#include <limits.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
+#ifdef SIZE_MAX
+Found it
+#endif
+], [gl_cv_size_max=yes])
+    if test $gl_cv_size_max != yes; then
+      dnl Define it ourselves. Here we assume that the type 'size_t' is not wider
+      dnl than the type 'unsigned long'. Try hard to find a definition that can
+      dnl be used in a preprocessor #if, i.e. doesn't contain a cast.
+      AC_COMPUTE_INT([size_t_bits_minus_1], [sizeof (size_t) * CHAR_BIT - 1],
+        [#include <stddef.h>
+#include <limits.h>], [size_t_bits_minus_1=])
+      AC_COMPUTE_INT([fits_in_uint], [sizeof (size_t) <= sizeof (unsigned int)],
+        [#include <stddef.h>], [fits_in_uint=])
+      if test -n "$size_t_bits_minus_1" && test -n "$fits_in_uint"; then
+        if test $fits_in_uint = 1; then
+          dnl Even though SIZE_MAX fits in an unsigned int, it must be of type
+          dnl 'unsigned long' if the type 'size_t' is the same as 'unsigned long'.
+          AC_COMPILE_IFELSE(
+            [AC_LANG_PROGRAM(
+               [[#include <stddef.h>
+                 extern size_t foo;
+                 extern unsigned long foo;
+               ]],
+               [[]])],
+            [fits_in_uint=0])
+        fi
+        dnl We cannot use 'expr' to simplify this expression, because 'expr'
+        dnl works only with 'long' integers in the host environment, while we
+        dnl might be cross-compiling from a 32-bit platform to a 64-bit platform.
+        if test $fits_in_uint = 1; then
+          gl_cv_size_max="(((1U << $size_t_bits_minus_1) - 1) * 2 + 1)"
+        else
+          gl_cv_size_max="(((1UL << $size_t_bits_minus_1) - 1) * 2 + 1)"
+        fi
+      else
+        dnl Shouldn't happen, but who knows...
+        gl_cv_size_max='((size_t)~(size_t)0)'
+      fi
+    fi
+  ])
+  if test "$gl_cv_size_max" != yes; then
+    AC_DEFINE_UNQUOTED([SIZE_MAX], [$gl_cv_size_max],
+      [Define as the maximum value of type 'size_t', if the system doesn't define it.])
+  fi
+  dnl Don't redefine SIZE_MAX in config.h if config.h is re-included after
+  dnl <stdint.h>. Remember that the #undef in AH_VERBATIM gets replaced with
+  dnl #define by AC_DEFINE_UNQUOTED.
+  AH_VERBATIM([SIZE_MAX],
+[/* Define as the maximum value of type 'size_t', if the system doesn't define
+   it. */
+#ifndef SIZE_MAX
+# undef SIZE_MAX
+#endif])
+])
diff --git a/src/grep/m4/sleep.m4 b/src/grep/m4/sleep.m4
new file mode 100644
index 0000000..49a2dcb
--- /dev/null
+++ b/src/grep/m4/sleep.m4
@@ -0,0 +1,66 @@
+# sleep.m4 serial 11
+dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_SLEEP],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  dnl We expect to see the declaration of sleep() in a header file.
+  dnl Older versions of mingw have a sleep() function that is an alias to
+  dnl _sleep() in MSVCRT. It has a different signature than POSIX sleep():
+  dnl it takes the number of milliseconds as argument and returns void.
+  dnl mingw does not declare this function.
+  AC_CHECK_DECLS([sleep], , , [[#include <unistd.h>]])
+  AC_CHECK_FUNCS_ONCE([sleep])
+  if test $ac_cv_have_decl_sleep != yes; then
+    HAVE_SLEEP=0
+  else
+    dnl Cygwin 1.5.x has a bug where sleep can't exceed 49.7 days.
+    AC_CACHE_CHECK([for working sleep], [gl_cv_func_sleep_works],
+      [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+#include <errno.h>
+#include <unistd.h>
+#include <signal.h>
+static void
+handle_alarm (int sig)
+{
+  if (sig != SIGALRM)
+    _exit (2);
+}
+]], [[
+    /* Failure to compile this test due to missing alarm is okay,
+       since all such platforms (mingw) also lack sleep.  */
+    unsigned int pentecost = 50 * 24 * 60 * 60; /* 50 days.  */
+    unsigned int remaining;
+    signal (SIGALRM, handle_alarm);
+    alarm (1);
+    remaining = sleep (pentecost);
+    if (remaining > pentecost)
+      return 3;
+    if (remaining <= pentecost - 10)
+      return 4;
+    return 0;
+    ]])],
+      [gl_cv_func_sleep_works=yes], [gl_cv_func_sleep_works=no],
+      [case "$host_os" in
+                        # Guess yes on glibc systems.
+         *-gnu* | gnu*) gl_cv_func_sleep_works="guessing yes" ;;
+                        # Guess yes on musl systems.
+         *-musl*)       gl_cv_func_sleep_works="guessing yes" ;;
+                        # Guess no on native Windows.
+         mingw*)        gl_cv_func_sleep_works="guessing no" ;;
+                        # If we don't know, obey --enable-cross-guesses.
+         *)             gl_cv_func_sleep_works="$gl_cross_guess_normal" ;;
+       esac
+      ])])
+    case "$gl_cv_func_sleep_works" in
+      *yes) ;;
+      *)
+        REPLACE_SLEEP=1
+        ;;
+    esac
+  fi
+])
diff --git a/src/grep/m4/snprintf.m4 b/src/grep/m4/snprintf.m4
new file mode 100644
index 0000000..8520994
--- /dev/null
+++ b/src/grep/m4/snprintf.m4
@@ -0,0 +1,62 @@
+# snprintf.m4 serial 7
+dnl Copyright (C) 2002-2004, 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Libintl 0.17 will replace snprintf only if it does not support %1$s,
+dnl but defers to any gnulib snprintf replacements.  Therefore, gnulib
+dnl must guarantee that the decision for replacing snprintf is a superset
+dnl of the reasons checked by libintl.
+AC_DEFUN([gl_FUNC_SNPRINTF],
+[
+  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+  gl_cv_func_snprintf_usable=no
+  AC_CHECK_FUNCS([snprintf])
+  if test $ac_cv_func_snprintf = yes; then
+    gl_SNPRINTF_SIZE1
+    case "$gl_cv_func_snprintf_size1" in
+      *yes)
+        gl_SNPRINTF_RETVAL_C99
+        case "$gl_cv_func_snprintf_retval_c99" in
+          *yes)
+            gl_PRINTF_POSITIONS
+            case "$gl_cv_func_printf_positions" in
+              *yes)
+                gl_cv_func_snprintf_usable=yes
+                ;;
+            esac
+            ;;
+        esac
+        ;;
+    esac
+  fi
+  if test $gl_cv_func_snprintf_usable = no; then
+    gl_REPLACE_SNPRINTF
+  fi
+  AC_CHECK_DECLS_ONCE([snprintf])
+  if test $ac_cv_have_decl_snprintf = no; then
+    HAVE_DECL_SNPRINTF=0
+  fi
+])
+
+AC_DEFUN([gl_REPLACE_SNPRINTF],
+[
+  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+  AC_LIBOBJ([snprintf])
+  if test $ac_cv_func_snprintf = yes; then
+    REPLACE_SNPRINTF=1
+  else
+    AC_CHECK_DECLS_ONCE([snprintf])
+    if test $ac_cv_have_decl_snprintf = yes; then
+      dnl If the function is declared but does not appear to exist, it may be
+      dnl defined as an inline function. In order to avoid a conflict, we have
+      dnl to define rpl_snprintf, not snprintf.
+      REPLACE_SNPRINTF=1
+    fi
+  fi
+  gl_PREREQ_SNPRINTF
+])
+
+# Prerequisites of lib/snprintf.c.
+AC_DEFUN([gl_PREREQ_SNPRINTF], [:])
diff --git a/src/grep/m4/socketlib.m4 b/src/grep/m4/socketlib.m4
new file mode 100644
index 0000000..0f8a082
--- /dev/null
+++ b/src/grep/m4/socketlib.m4
@@ -0,0 +1,96 @@
+# socketlib.m4 serial 3
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl gl_SOCKETLIB
+dnl Determines the library to use for socket functions.
+dnl Sets and AC_SUBSTs LIBSOCKET.
+
+AC_DEFUN([gl_SOCKETLIB],
+[
+  gl_PREREQ_SYS_H_WINSOCK2 dnl for HAVE_WINSOCK2_H
+  LIBSOCKET=
+  if test $HAVE_WINSOCK2_H = 1; then
+    dnl Native Windows API (not Cygwin).
+    dnl If the function WSAStartup exists (declared in <winsock2.h> and
+    dnl defined through -lws2_32), we need to call it.
+    AC_CACHE_CHECK([for WSAStartup],
+      [gl_cv_func_wsastartup], [
+       gl_save_LIBS="$LIBS"
+       LIBS="$LIBS -lws2_32"
+       AC_LINK_IFELSE(
+         [AC_LANG_PROGRAM([[
+#ifdef HAVE_WINSOCK2_H
+# include <winsock2.h>
+#endif]], [[
+            WORD wVersionRequested = MAKEWORD(1, 1);
+            WSADATA wsaData;
+            int err = WSAStartup(wVersionRequested, &wsaData);
+            WSACleanup ();
+            ]])
+         ],
+         [gl_cv_func_wsastartup=yes],
+         [gl_cv_func_wsastartup=no])
+       LIBS="$gl_save_LIBS"
+      ])
+    if test "$gl_cv_func_wsastartup" = "yes"; then
+      AC_DEFINE([WINDOWS_SOCKETS], [1], [Define if WSAStartup is needed.])
+      LIBSOCKET='-lws2_32'
+    fi
+  else
+    dnl Unix API.
+    dnl Solaris has most socket functions in libsocket.
+    dnl Haiku has most socket functions in libnetwork.
+    dnl BeOS has most socket functions in libnet.
+    dnl On HP-UX, do NOT link with libxnet, because in 64-bit mode this would
+    dnl break code (e.g. in libraries) that invokes accept(), getpeername(),
+    dnl getsockname(), getsockopt(), or recvfrom() with a 32-bit addrlen. See
+    dnl "man xopen_networking" for details.
+    AC_CACHE_CHECK([for library containing setsockopt], [gl_cv_lib_socket], [
+      gl_cv_lib_socket=
+      AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern
+#ifdef __cplusplus
+"C"
+#endif
+char setsockopt();]], [[setsockopt();]])],
+        [],
+        [gl_save_LIBS="$LIBS"
+         LIBS="$gl_save_LIBS -lsocket"
+         AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern
+#ifdef __cplusplus
+"C"
+#endif
+char setsockopt();]], [[setsockopt();]])],
+           [gl_cv_lib_socket="-lsocket"])
+         if test -z "$gl_cv_lib_socket"; then
+           LIBS="$gl_save_LIBS -lnetwork"
+           AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern
+#ifdef __cplusplus
+"C"
+#endif
+char setsockopt();]], [[setsockopt();]])],
+             [gl_cv_lib_socket="-lnetwork"])
+           if test -z "$gl_cv_lib_socket"; then
+             LIBS="$gl_save_LIBS -lnet"
+             AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern
+#ifdef __cplusplus
+"C"
+#endif
+char setsockopt();]], [[setsockopt();]])],
+               [gl_cv_lib_socket="-lnet"])
+           fi
+         fi
+         LIBS="$gl_save_LIBS"
+        ])
+      if test -z "$gl_cv_lib_socket"; then
+        gl_cv_lib_socket="none needed"
+      fi
+    ])
+    if test "$gl_cv_lib_socket" != "none needed"; then
+      LIBSOCKET="$gl_cv_lib_socket"
+    fi
+  fi
+  AC_SUBST([LIBSOCKET])
+])
diff --git a/src/grep/m4/sockets.m4 b/src/grep/m4/sockets.m4
new file mode 100644
index 0000000..02b43b6
--- /dev/null
+++ b/src/grep/m4/sockets.m4
@@ -0,0 +1,17 @@
+# sockets.m4 serial 7
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_SOCKETS],
+[
+  AC_REQUIRE([AC_C_INLINE])
+  AC_REQUIRE([gl_SOCKETLIB])
+  gl_PREREQ_SOCKETS
+])
+
+# Prerequisites of lib/sockets.c.
+AC_DEFUN([gl_PREREQ_SOCKETS], [
+  :
+])
diff --git a/src/grep/m4/socklen.m4 b/src/grep/m4/socklen.m4
new file mode 100644
index 0000000..eca1d1b
--- /dev/null
+++ b/src/grep/m4/socklen.m4
@@ -0,0 +1,76 @@
+# socklen.m4 serial 11
+dnl Copyright (C) 2005-2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Albert Chin, Windows fixes from Simon Josefsson.
+
+dnl Check for socklen_t: historically on BSD it is an int, and in
+dnl POSIX 1g it is a type of its own, but some platforms use different
+dnl types for the argument to getsockopt, getpeername, etc.:
+dnl HP-UX 10.20, IRIX 6.5, OSF/1 4.0, Interix 3.5, BeOS.
+dnl So we have to test to find something that will work.
+
+AC_DEFUN([gl_TYPE_SOCKLEN_T],
+  [AC_REQUIRE([gl_CHECK_SOCKET_HEADERS])dnl
+   AC_CHECK_TYPE([socklen_t], ,
+     [AC_CACHE_CHECK([for socklen_t equivalent],
+        [gl_cv_socklen_t_equiv],
+        [# Systems have either "struct sockaddr *" or
+         # "void *" as the second argument to getpeername
+         gl_cv_socklen_t_equiv=
+         for arg2 in "struct sockaddr" void; do
+           for t in int size_t "unsigned int" "long int" "unsigned long int"; do
+             AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+                 [[#include <sys/types.h>
+                   #include <sys/socket.h>
+
+                   int getpeername (int, $arg2 *, $t *);]],
+                 [[$t len;
+                  getpeername (0, 0, &len);]])],
+               [gl_cv_socklen_t_equiv="$t"])
+             test "$gl_cv_socklen_t_equiv" != "" && break
+           done
+           test "$gl_cv_socklen_t_equiv" != "" && break
+         done
+         if test "$gl_cv_socklen_t_equiv" = ""; then
+           AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])
+         fi
+        ])
+      AC_DEFINE_UNQUOTED([socklen_t], [$gl_cv_socklen_t_equiv],
+        [type to use in place of socklen_t if not defined])],
+     [gl_SOCKET_HEADERS])])
+
+dnl On mingw32, socklen_t is in ws2tcpip.h ('int'), so we try to find
+dnl it there too.  But on Cygwin, wc2tcpip.h must not be included.  Users
+dnl of this module should use the same include pattern as gl_SOCKET_HEADERS.
+dnl When you change this macro, keep also in sync:
+dnl   - gl_CHECK_SOCKET_HEADERS,
+dnl   - the Include section of modules/socklen.
+AC_DEFUN([gl_SOCKET_HEADERS],
+[
+/* <sys/types.h> is not needed according to POSIX, but the
+   <sys/socket.h> in i386-unknown-freebsd4.10 and
+   powerpc-apple-darwin5.5 required it. */
+#include <sys/types.h>
+#if HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#elif HAVE_WS2TCPIP_H
+# include <ws2tcpip.h>
+#endif
+])
+
+dnl Tests for the existence of the header for socket facilities.
+dnl Defines the C macros HAVE_SYS_SOCKET_H, HAVE_WS2TCPIP_H.
+dnl This macro must match gl_SOCKET_HEADERS.
+AC_DEFUN([gl_CHECK_SOCKET_HEADERS],
+  [AC_CHECK_HEADERS_ONCE([sys/socket.h])
+   if test $ac_cv_header_sys_socket_h = no; then
+     dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make
+     dnl the check for those headers unconditional; yet cygwin reports
+     dnl that the headers are present but cannot be compiled (since on
+     dnl cygwin, all socket information should come from sys/socket.h).
+     AC_CHECK_HEADERS([ws2tcpip.h])
+   fi
+  ])
diff --git a/src/grep/m4/sockpfaf.m4 b/src/grep/m4/sockpfaf.m4
new file mode 100644
index 0000000..17e14c7
--- /dev/null
+++ b/src/grep/m4/sockpfaf.m4
@@ -0,0 +1,84 @@
+# sockpfaf.m4 serial 10
+dnl Copyright (C) 2004, 2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Test for some common socket protocol families (PF_INET, PF_INET6, ...)
+dnl and some common address families (AF_INET, AF_INET6, ...).
+dnl This test assumes that a system supports an address family if and only if
+dnl it supports the corresponding protocol family.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([gl_SOCKET_FAMILIES],
+[
+  AC_REQUIRE([gl_SYS_SOCKET_H])
+  AC_CHECK_HEADERS_ONCE([netinet/in.h])
+
+  AC_CACHE_CHECK([for IPv4 sockets],
+    [gl_cv_socket_ipv4],
+    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif]],
+[[int x = AF_INET; struct in_addr y; struct sockaddr_in z;
+ if (&x && &y && &z) return 0;]])],
+       gl_cv_socket_ipv4=yes, gl_cv_socket_ipv4=no)])
+  if test $gl_cv_socket_ipv4 = yes; then
+    AC_DEFINE([HAVE_IPV4], [1], [Define to 1 if <sys/socket.h> defines AF_INET.])
+  fi
+
+  AC_CACHE_CHECK([for IPv6 sockets],
+    [gl_cv_socket_ipv6],
+    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif]],
+[[int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z;
+ if (&x && &y && &z) return 0;]])],
+       gl_cv_socket_ipv6=yes, gl_cv_socket_ipv6=no)])
+  if test $gl_cv_socket_ipv6 = yes; then
+    AC_DEFINE([HAVE_IPV6], [1], [Define to 1 if <sys/socket.h> defines AF_INET6.])
+  fi
+])
+
+AC_DEFUN([gl_SOCKET_FAMILY_UNIX],
+[
+  AC_REQUIRE([gl_SYS_SOCKET_H])
+  AC_CHECK_HEADERS_ONCE([sys/un.h])
+
+  AC_CACHE_CHECK([for UNIX domain sockets],
+    [gl_cv_socket_unix],
+    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif]],
+[[int x = AF_UNIX; struct sockaddr_un y;
+ if (&x && &y) return 0;]])],
+       gl_cv_socket_unix=yes, gl_cv_socket_unix=no)])
+  if test $gl_cv_socket_unix = yes; then
+    AC_DEFINE([HAVE_UNIXSOCKET], [1], [Define to 1 if <sys/socket.h> defines AF_UNIX.])
+  fi
+])
diff --git a/src/grep/m4/ssize_t.m4 b/src/grep/m4/ssize_t.m4
new file mode 100644
index 0000000..f0ed509
--- /dev/null
+++ b/src/grep/m4/ssize_t.m4
@@ -0,0 +1,23 @@
+# ssize_t.m4 serial 5 (gettext-0.18.2)
+dnl Copyright (C) 2001-2003, 2006, 2010-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+dnl Test whether ssize_t is defined.
+
+AC_DEFUN([gt_TYPE_SSIZE_T],
+[
+  AC_CACHE_CHECK([for ssize_t], [gt_cv_ssize_t],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <sys/types.h>]],
+          [[int x = sizeof (ssize_t *) + sizeof (ssize_t);
+            return !x;]])],
+       [gt_cv_ssize_t=yes], [gt_cv_ssize_t=no])])
+  if test $gt_cv_ssize_t = no; then
+    AC_DEFINE([ssize_t], [int],
+              [Define as a signed type of the same size as size_t.])
+  fi
+])
diff --git a/src/grep/m4/stack-direction.m4 b/src/grep/m4/stack-direction.m4
new file mode 100644
index 0000000..9328725
--- /dev/null
+++ b/src/grep/m4/stack-direction.m4
@@ -0,0 +1,105 @@
+# stack-direction.m4 serial 7
+dnl Copyright (C) 2002-2021 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl Written by Bruno Haible.
+
+# Determine the stack direction. Define the C macro STACK_DIRECTION.
+AC_DEFUN([SV_STACK_DIRECTION],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CACHE_CHECK([for stack direction], [sv_cv_stack_direction_msg], [
+    case "$host_cpu" in
+      dnl See the #define STACK_GROWS_DOWNWARD in gcc-3.1/gcc/config/*/*.h.
+      a29k | \
+      aarch64* | \
+      alpha* | \
+      arc | \
+      arm* | strongarm* | xscale* | \
+      avr | avr32 | \
+      bfin | \
+      c1 | c2 | c32 | c34 | c38 | \
+      clipper | \
+      cris | \
+      d30v | \
+      elxsi | \
+      fr30 | \
+      h8300 | \
+      i?86 | x86_64 | \
+      i860 | \
+      ia64 | \
+      m32r | \
+      m68* | \
+      m88k | \
+      mcore | \
+      microblaze | \
+      mips* | \
+      mmix | \
+      mn10200 | \
+      mn10300 | \
+      nios2 | \
+      nds32* | \
+      ns32k | \
+      pdp11 | \
+      pj* | \
+      powerpc* | rs6000 | \
+      riscv* | \
+      romp | \
+      s390* | \
+      sh* | \
+      sparc* | \
+      v850 | \
+      vax | \
+      xtensa)
+        sv_cv_stack_direction=-1 ;;
+      c4x | \
+      dsp16xx | \
+      i960 | \
+      hppa* | parisc* | \
+      stormy16 | \
+      we32k)
+        sv_cv_stack_direction=1 ;;
+      *)
+        if test $cross_compiling = no; then
+          cat > conftest.c <<EOF
+#include <stdio.h>
+int
+find_stack_direction (int *addr, int depth)
+{
+  int dir, dummy = 0;
+  if (! addr)
+    addr = &dummy;
+  *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
+  dir = depth ? find_stack_direction (addr, depth - 1) : 0;
+  return dir + dummy;
+}
+int
+main (int argc, char *argv[])
+{
+  printf ("%d\n", find_stack_direction (NULL, argc + 20));
+  return 0;
+}
+EOF
+          AC_TRY_EVAL([ac_link])
+          sv_cv_stack_direction=`./conftest`
+        else
+          sv_cv_stack_direction=0
+        fi
+        ;;
+    esac
+    case $sv_cv_stack_direction in
+      1)  sv_cv_stack_direction_msg="grows up";;
+      -1) sv_cv_stack_direction_msg="grows down";;
+      *)  sv_cv_stack_direction_msg="unknown";;
+    esac
+  ])
+  AC_DEFINE_UNQUOTED([STACK_DIRECTION], [$sv_cv_stack_direction],
+    [Define as the direction of stack growth for your system.
+     STACK_DIRECTION > 0 => grows toward higher addresses
+     STACK_DIRECTION < 0 => grows toward lower addresses
+     STACK_DIRECTION = 0 => spaghetti stack.])
+])
diff --git a/src/grep/m4/stat-time.m4 b/src/grep/m4/stat-time.m4
new file mode 100644
index 0000000..df1c2a7
--- /dev/null
+++ b/src/grep/m4/stat-time.m4
@@ -0,0 +1,83 @@
+# Checks for stat-related time functions.
+
+# Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2021 Free Software
+# Foundation, Inc.
+
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert.
+
+# st_atim.tv_nsec - Linux, Solaris, Cygwin
+# st_atimespec.tv_nsec - FreeBSD, NetBSD, if ! defined _POSIX_SOURCE
+# st_atimensec - FreeBSD, NetBSD, if defined _POSIX_SOURCE
+# st_atim.st__tim.tv_nsec - UnixWare (at least 2.1.2 through 7.1)
+
+# st_birthtimespec - FreeBSD, NetBSD (hidden on OpenBSD 3.9, anyway)
+# st_birthtim - Cygwin 1.7.0+
+
+AC_DEFUN([gl_STAT_TIME],
+[
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_CHECK_HEADERS_ONCE([sys/time.h])
+
+  AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec],
+    [AC_CACHE_CHECK([whether struct stat.st_atim is of type struct timespec],
+       [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec],
+       [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+          [[
+            #include <sys/types.h>
+            #include <sys/stat.h>
+            #if HAVE_SYS_TIME_H
+            # include <sys/time.h>
+            #endif
+            #include <time.h>
+            struct timespec ts;
+            struct stat st;
+          ]],
+          [[
+            st.st_atim = ts;
+          ]])],
+          [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=yes],
+          [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=no])])
+     if test $ac_cv_typeof_struct_stat_st_atim_is_struct_timespec = yes; then
+       AC_DEFINE([TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC], [1],
+         [Define to 1 if the type of the st_atim member of a struct stat is
+          struct timespec.])
+     fi],
+    [AC_CHECK_MEMBERS([struct stat.st_atimespec.tv_nsec], [],
+       [AC_CHECK_MEMBERS([struct stat.st_atimensec], [],
+          [AC_CHECK_MEMBERS([struct stat.st_atim.st__tim.tv_nsec], [], [],
+             [#include <sys/types.h>
+              #include <sys/stat.h>])],
+          [#include <sys/types.h>
+           #include <sys/stat.h>])],
+       [#include <sys/types.h>
+        #include <sys/stat.h>])],
+    [#include <sys/types.h>
+     #include <sys/stat.h>])
+])
+
+# Check for st_birthtime, a feature from UFS2 (FreeBSD, NetBSD, OpenBSD, etc.)
+# and NTFS (Cygwin).
+# There was a time when this field was named st_createtime (21 June
+# 2002 to 16 July 2002) But that window is very small and applied only
+# to development code, so systems still using that configuration are
+# not supported.  See revisions 1.10 and 1.11 of FreeBSD's
+# src/sys/ufs/ufs/dinode.h.
+#
+AC_DEFUN([gl_STAT_BIRTHTIME],
+[
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_CHECK_HEADERS_ONCE([sys/time.h])
+  AC_CHECK_MEMBERS([struct stat.st_birthtimespec.tv_nsec], [],
+    [AC_CHECK_MEMBERS([struct stat.st_birthtimensec], [],
+      [AC_CHECK_MEMBERS([struct stat.st_birthtim.tv_nsec], [], [],
+         [#include <sys/types.h>
+          #include <sys/stat.h>])],
+       [#include <sys/types.h>
+        #include <sys/stat.h>])],
+    [#include <sys/types.h>
+     #include <sys/stat.h>])
+])
diff --git a/src/grep/m4/stat.m4 b/src/grep/m4/stat.m4
new file mode 100644
index 0000000..9bcdb72
--- /dev/null
+++ b/src/grep/m4/stat.m4
@@ -0,0 +1,85 @@
+# serial 18
+
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STAT],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+  AC_CHECK_FUNCS_ONCE([lstat])
+  case "$host_os" in
+    mingw*)
+      dnl On this platform, the original stat() returns st_atime, st_mtime,
+      dnl st_ctime values that are affected by the time zone.
+      REPLACE_STAT=1
+      ;;
+    *)
+      dnl AIX 7.1, Solaris 9, mingw64 mistakenly succeed on stat("file/").
+      dnl (For mingw, this is due to a broken stat() override in libmingwex.a.)
+      dnl FreeBSD 7.2 mistakenly succeeds on stat("link-to-file/").
+      AC_CACHE_CHECK([whether stat handles trailing slashes on files],
+        [gl_cv_func_stat_file_slash],
+        [touch conftest.tmp
+         # Assume that if we have lstat, we can also check symlinks.
+         if test $ac_cv_func_lstat = yes; then
+           ln -s conftest.tmp conftest.lnk
+         fi
+         AC_RUN_IFELSE(
+           [AC_LANG_PROGRAM(
+             [[#include <sys/stat.h>
+]], [[int result = 0;
+               struct stat st;
+               if (!stat ("conftest.tmp/", &st))
+                 result |= 1;
+#if HAVE_LSTAT
+               if (!stat ("conftest.lnk/", &st))
+                 result |= 2;
+#endif
+               return result;
+             ]])],
+           [gl_cv_func_stat_file_slash=yes], [gl_cv_func_stat_file_slash=no],
+           [case "$host_os" in
+                               # Guess yes on Linux systems.
+              linux-* | linux) gl_cv_func_stat_file_slash="guessing yes" ;;
+                               # Guess yes on glibc systems.
+              *-gnu* | gnu*)   gl_cv_func_stat_file_slash="guessing yes" ;;
+                               # If we don't know, obey --enable-cross-guesses.
+              *)               gl_cv_func_stat_file_slash="$gl_cross_guess_normal" ;;
+            esac
+           ])
+         rm -f conftest.tmp conftest.lnk])
+      case $gl_cv_func_stat_file_slash in
+        *no)
+          REPLACE_STAT=1
+          AC_DEFINE([REPLACE_FUNC_STAT_FILE], [1], [Define to 1 if stat needs
+            help when passed a file name with a trailing slash]);;
+      esac
+      case $host_os in
+        dnl Solaris stat can return a negative tv_nsec.
+        solaris*)
+          REPLACE_FSTAT=1 ;;
+      esac
+      ;;
+  esac
+])
+
+# Prerequisites of lib/stat.c and lib/stat-w32.c.
+AC_DEFUN([gl_PREREQ_STAT], [
+  AC_REQUIRE([gl_SYS_STAT_H])
+  AC_REQUIRE([gl_PREREQ_STAT_W32])
+  :
+])
+
+# Prerequisites of lib/stat-w32.c.
+AC_DEFUN([gl_PREREQ_STAT_W32], [
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    mingw*)
+      AC_CHECK_HEADERS([sdkddkver.h])
+      ;;
+  esac
+])
diff --git a/src/grep/m4/stdalign.m4 b/src/grep/m4/stdalign.m4
new file mode 100644
index 0000000..e22d7f7
--- /dev/null
+++ b/src/grep/m4/stdalign.m4
@@ -0,0 +1,59 @@
+# Check for stdalign.h that conforms to C11.
+
+dnl Copyright 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Prepare for substituting <stdalign.h> if it is not supported.
+
+AC_DEFUN([gl_STDALIGN_H],
+[
+  AC_CACHE_CHECK([for working stdalign.h],
+    [gl_cv_header_working_stdalign_h],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <stdint.h>
+            #include <stdalign.h>
+            #include <stddef.h>
+
+            /* Test that alignof yields a result consistent with offsetof.
+               This catches GCC bug 52023
+               <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52023>.  */
+            #ifdef __cplusplus
+               template <class t> struct alignof_helper { char a; t b; };
+            # define ao(type) offsetof (alignof_helper<type>, b)
+            #else
+            # define ao(type) offsetof (struct { char a; type b; }, b)
+            #endif
+            char test_double[ao (double) % _Alignof (double) == 0 ? 1 : -1];
+            char test_long[ao (long int) % _Alignof (long int) == 0 ? 1 : -1];
+            char test_alignof[alignof (double) == _Alignof (double) ? 1 : -1];
+
+            /* Test _Alignas only on platforms where gnulib can help.  */
+            #if \
+                ((defined __cplusplus && 201103 <= __cplusplus) \
+                 || (__TINYC__ && defined __attribute__) \
+                 || (defined __APPLE__ && defined __MACH__ \
+                     ? 4 < __GNUC__ + (1 <= __GNUC_MINOR__) \
+                     : __GNUC__) \
+                 || (__ia64 && (61200 <= __HP_cc || 61200 <= __HP_aCC)) \
+                 || __ICC || 0x590 <= __SUNPRO_C || 0x0600 <= __xlC__ \
+                 || 1300 <= _MSC_VER)
+              struct alignas_test { char c; char alignas (8) alignas_8; };
+              char test_alignas[offsetof (struct alignas_test, alignas_8) == 8
+                                ? 1 : -1];
+            #endif
+          ]])],
+       [gl_cv_header_working_stdalign_h=yes],
+       [gl_cv_header_working_stdalign_h=no])])
+
+  if test $gl_cv_header_working_stdalign_h = yes; then
+    STDALIGN_H=''
+  else
+    STDALIGN_H='stdalign.h'
+  fi
+
+  AC_SUBST([STDALIGN_H])
+  AM_CONDITIONAL([GL_GENERATE_STDALIGN_H], [test -n "$STDALIGN_H"])
+])
diff --git a/src/grep/m4/stdarg.m4 b/src/grep/m4/stdarg.m4
new file mode 100644
index 0000000..0b5fb63
--- /dev/null
+++ b/src/grep/m4/stdarg.m4
@@ -0,0 +1,78 @@
+# stdarg.m4 serial 7
+dnl Copyright (C) 2006, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+dnl Provide a working va_copy in combination with <stdarg.h>.
+
+AC_DEFUN([gl_STDARG_H],
+[
+  STDARG_H=''
+  NEXT_STDARG_H='<stdarg.h>'
+  AC_CACHE_CHECK([for va_copy],
+    [gl_cv_func_va_copy],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <stdarg.h>]],
+          [[
+#ifndef va_copy
+void (*func) (va_list, va_list) = va_copy;
+#endif
+          ]])],
+       [gl_cv_func_va_copy=yes],
+       [gl_cv_func_va_copy=no])
+    ])
+  if test $gl_cv_func_va_copy = no; then
+    dnl Provide a substitute.
+    dnl Usually a simple definition in <config.h> is enough. Not so on AIX 5
+    dnl with some versions of the /usr/vac/bin/cc compiler. It has an <stdarg.h>
+    dnl which does '#undef va_copy', leading to a missing va_copy symbol. For
+    dnl this platform, we use an <stdarg.h> substitute. But we cannot use this
+    dnl approach on other platforms, because <stdarg.h> often defines only
+    dnl preprocessor macros and gl_ABSOLUTE_HEADER, gl_CHECK_NEXT_HEADERS do
+    dnl not work in this situation.
+    AC_EGREP_CPP([vaccine],
+      [#if defined _AIX && !defined __GNUC__
+        AIX vaccine
+       #endif
+      ], [gl_aixcc=yes], [gl_aixcc=no])
+    if test $gl_aixcc = yes; then
+      dnl Provide a substitute <stdarg.h> file.
+      STDARG_H=stdarg.h
+      gl_NEXT_HEADERS([stdarg.h])
+      dnl Fallback for the case when <stdarg.h> contains only macro definitions.
+      if test "$gl_cv_next_stdarg_h" = '""'; then
+        gl_cv_next_stdarg_h='"///usr/include/stdarg.h"'
+        NEXT_STDARG_H="$gl_cv_next_stdarg_h"
+      fi
+    else
+      dnl Provide a substitute in <config.h>, either __va_copy or as a simple
+      dnl assignment.
+      gl_CACHE_VAL_SILENT([gl_cv_func___va_copy], [
+        AC_COMPILE_IFELSE(
+          [AC_LANG_PROGRAM(
+             [[#include <stdarg.h>]],
+             [[
+#ifndef __va_copy
+error, bail out
+#endif
+             ]])],
+          [gl_cv_func___va_copy=yes],
+          [gl_cv_func___va_copy=no])])
+      if test $gl_cv_func___va_copy = yes; then
+        AC_DEFINE([va_copy], [__va_copy],
+          [Define as a macro for copying va_list variables.])
+      else
+        AH_VERBATIM([gl_VA_COPY], [/* A replacement for va_copy, if needed.  */
+#define gl_va_copy(a,b) ((a) = (b))])
+        AC_DEFINE([va_copy], [gl_va_copy],
+          [Define as a macro for copying va_list variables.])
+      fi
+    fi
+  fi
+  AC_SUBST([STDARG_H])
+  AM_CONDITIONAL([GL_GENERATE_STDARG_H], [test -n "$STDARG_H"])
+  AC_SUBST([NEXT_STDARG_H])
+])
diff --git a/src/grep/m4/stdbool.m4 b/src/grep/m4/stdbool.m4
new file mode 100644
index 0000000..3169779
--- /dev/null
+++ b/src/grep/m4/stdbool.m4
@@ -0,0 +1,122 @@
+# Check for stdbool.h that conforms to C99.
+
+dnl Copyright (C) 2002-2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+#serial 8
+
+# Prepare for substituting <stdbool.h> if it is not supported.
+
+AC_DEFUN([AM_STDBOOL_H],
+[
+  AC_REQUIRE([AC_CHECK_HEADER_STDBOOL])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  dnl On some platforms, <stdbool.h> does not exist or does not conform to C99.
+  dnl On Solaris 10 with CC=cc CXX=CC, <stdbool.h> exists but is not usable
+  dnl in C++ mode (and no <cstdbool> exists). In this case, we use our
+  dnl replacement, also in C mode (for binary compatibility between C and C++).
+  if test "$ac_cv_header_stdbool_h" = yes; then
+    case "$host_os" in
+      solaris*)
+        if test -z "$GCC"; then
+          STDBOOL_H='stdbool.h'
+        else
+          STDBOOL_H=''
+        fi
+        ;;
+      *)
+        STDBOOL_H=''
+        ;;
+    esac
+  else
+    STDBOOL_H='stdbool.h'
+  fi
+  AC_SUBST([STDBOOL_H])
+  AM_CONDITIONAL([GL_GENERATE_STDBOOL_H], [test -n "$STDBOOL_H"])
+
+  if test "$ac_cv_type__Bool" = yes; then
+    HAVE__BOOL=1
+  else
+    HAVE__BOOL=0
+  fi
+  AC_SUBST([HAVE__BOOL])
+])
+
+# AM_STDBOOL_H will be renamed to gl_STDBOOL_H in the future.
+AC_DEFUN([gl_STDBOOL_H], [AM_STDBOOL_H])
+
+# This version of the macro is needed in autoconf <= 2.68.
+
+AC_DEFUN([AC_CHECK_HEADER_STDBOOL],
+  [AC_CACHE_CHECK([for stdbool.h that conforms to C99],
+     [ac_cv_header_stdbool_h],
+     [AC_COMPILE_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[
+             #include <stdbool.h>
+
+             #ifdef __cplusplus
+              typedef bool Bool;
+             #else
+              typedef _Bool Bool;
+              #ifndef bool
+               "error: bool is not defined"
+              #endif
+              #ifndef false
+               "error: false is not defined"
+              #endif
+              #if false
+               "error: false is not 0"
+              #endif
+              #ifndef true
+               "error: true is not defined"
+              #endif
+              #if true != 1
+               "error: true is not 1"
+              #endif
+             #endif
+
+             #ifndef __bool_true_false_are_defined
+              "error: __bool_true_false_are_defined is not defined"
+             #endif
+
+             struct s { Bool s: 1; Bool t; bool u: 1; bool v; } s;
+
+             char a[true == 1 ? 1 : -1];
+             char b[false == 0 ? 1 : -1];
+             char c[__bool_true_false_are_defined == 1 ? 1 : -1];
+             char d[(bool) 0.5 == true ? 1 : -1];
+             /* See body of main program for 'e'.  */
+             char f[(Bool) 0.0 == false ? 1 : -1];
+             char g[true];
+             char h[sizeof (Bool)];
+             char i[sizeof s.t];
+             enum { j = false, k = true, l = false * true, m = true * 256 };
+             /* The following fails for
+                HP aC++/ANSI C B3910B A.05.55 [Dec 04 2003]. */
+             Bool n[m];
+             char o[sizeof n == m * sizeof n[0] ? 1 : -1];
+             char p[-1 - (Bool) 0 < 0 && -1 - (bool) 0 < 0 ? 1 : -1];
+             /* Catch a bug in an HP-UX C compiler.  See
+                https://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
+                https://lists.gnu.org/r/bug-coreutils/2005-11/msg00161.html
+              */
+             Bool q = true;
+             Bool *pq = &q;
+             bool *qq = &q;
+           ]],
+           [[
+             bool e = &s;
+             *pq |= q; *pq |= ! q;
+             *qq |= q; *qq |= ! q;
+             /* Refer to every declared value, to avoid compiler optimizations.  */
+             return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !!j + !k + !!l
+                     + !m + !n + !o + !p + !q + !pq + !qq);
+           ]])],
+        [ac_cv_header_stdbool_h=yes],
+        [ac_cv_header_stdbool_h=no])])
+   AC_CHECK_TYPES([_Bool])
+])
diff --git a/src/grep/m4/stddef_h.m4 b/src/grep/m4/stddef_h.m4
new file mode 100644
index 0000000..1303d2e
--- /dev/null
+++ b/src/grep/m4/stddef_h.m4
@@ -0,0 +1,99 @@
+# stddef_h.m4 serial 11
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl A placeholder for <stddef.h>, for platforms that have issues.
+
+AC_DEFUN_ONCE([gl_STDDEF_H],
+[
+  AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
+  AC_REQUIRE([gt_TYPE_WCHAR_T])
+
+  dnl Persuade OpenBSD <stddef.h> to declare max_align_t.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  STDDEF_H=
+
+  dnl Test whether the type max_align_t exists and whether its alignment
+  dnl "is as great as is supported by the implementation in all contexts".
+  AC_CACHE_CHECK([for good max_align_t],
+    [gl_cv_type_max_align_t],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <stddef.h>
+            unsigned int s = sizeof (max_align_t);
+            #if defined __GNUC__ || defined __clang__ || defined __IBM__ALIGNOF__
+            int check1[2 * (__alignof__ (double) <= __alignof__ (max_align_t)) - 1];
+            int check2[2 * (__alignof__ (long double) <= __alignof__ (max_align_t)) - 1];
+            #endif
+            typedef struct { char a; max_align_t b; } max_helper;
+            typedef struct { char a; long b; } long_helper;
+            typedef struct { char a; double b; } double_helper;
+            typedef struct { char a; long double b; } long_double_helper;
+            int check3[2 * (offsetof (long_helper, b) <= offsetof (max_helper, b)) - 1];
+            int check4[2 * (offsetof (double_helper, b) <= offsetof (max_helper, b)) - 1];
+            int check5[2 * (offsetof (long_double_helper, b) <= offsetof (max_helper, b)) - 1];
+          ]])],
+       [gl_cv_type_max_align_t=yes],
+       [gl_cv_type_max_align_t=no])
+    ])
+  if test $gl_cv_type_max_align_t = no; then
+    HAVE_MAX_ALIGN_T=0
+    STDDEF_H=stddef.h
+  fi
+
+  if test $gt_cv_c_wchar_t = no; then
+    HAVE_WCHAR_T=0
+    STDDEF_H=stddef.h
+  fi
+
+  AC_CACHE_CHECK([whether NULL can be used in arbitrary expressions],
+    [gl_cv_decl_null_works],
+    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stddef.h>
+      int test[2 * (sizeof NULL == sizeof (void *)) -1];
+]])],
+      [gl_cv_decl_null_works=yes],
+      [gl_cv_decl_null_works=no])])
+  if test $gl_cv_decl_null_works = no; then
+    REPLACE_NULL=1
+    STDDEF_H=stddef.h
+  fi
+
+  AC_SUBST([STDDEF_H])
+  AM_CONDITIONAL([GL_GENERATE_STDDEF_H], [test -n "$STDDEF_H"])
+  if test -n "$STDDEF_H"; then
+    gl_NEXT_HEADERS([stddef.h])
+  fi
+])
+
+# gl_STDDEF_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_STDDEF_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_STDDEF_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_STDDEF_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_STDDEF_H_MODULE_INDICATOR_DEFAULTS], [
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_STDDEF_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_STDDEF_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  REPLACE_NULL=0;                AC_SUBST([REPLACE_NULL])
+  HAVE_MAX_ALIGN_T=1;            AC_SUBST([HAVE_MAX_ALIGN_T])
+  HAVE_WCHAR_T=1;                AC_SUBST([HAVE_WCHAR_T])
+])
diff --git a/src/grep/m4/stdint.m4 b/src/grep/m4/stdint.m4
new file mode 100644
index 0000000..2eb1652
--- /dev/null
+++ b/src/grep/m4/stdint.m4
@@ -0,0 +1,533 @@
+# stdint.m4 serial 60
+dnl Copyright (C) 2001-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert and Bruno Haible.
+dnl Test whether <stdint.h> is supported or must be substituted.
+
+AC_PREREQ([2.61])
+
+AC_DEFUN_ONCE([gl_STDINT_H],
+[
+  AC_PREREQ([2.59])dnl
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  AC_REQUIRE([gl_LIMITS_H])
+  AC_REQUIRE([gt_TYPE_WINT_T])
+
+  dnl For backward compatibility. Some packages may still be testing these
+  dnl macros.
+  AC_DEFINE([HAVE_LONG_LONG_INT], [1],
+    [Define to 1 if the system has the type 'long long int'.])
+  AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], [1],
+    [Define to 1 if the system has the type 'unsigned long long int'.])
+
+  dnl Check for <wchar.h>, in the same way as gl_WCHAR_H does.
+  AC_CHECK_HEADERS_ONCE([wchar.h])
+  if test $ac_cv_header_wchar_h = yes; then
+    HAVE_WCHAR_H=1
+  else
+    HAVE_WCHAR_H=0
+  fi
+  AC_SUBST([HAVE_WCHAR_H])
+
+  dnl Check for <inttypes.h>.
+  AC_CHECK_HEADERS_ONCE([inttypes.h])
+  if test $ac_cv_header_inttypes_h = yes; then
+    HAVE_INTTYPES_H=1
+  else
+    HAVE_INTTYPES_H=0
+  fi
+  AC_SUBST([HAVE_INTTYPES_H])
+
+  dnl Check for <sys/types.h>.
+  AC_CHECK_HEADERS_ONCE([sys/types.h])
+  if test $ac_cv_header_sys_types_h = yes; then
+    HAVE_SYS_TYPES_H=1
+  else
+    HAVE_SYS_TYPES_H=0
+  fi
+  AC_SUBST([HAVE_SYS_TYPES_H])
+
+  gl_CHECK_NEXT_HEADERS([stdint.h])
+  if test $ac_cv_header_stdint_h = yes; then
+    HAVE_STDINT_H=1
+  else
+    HAVE_STDINT_H=0
+  fi
+  AC_SUBST([HAVE_STDINT_H])
+
+  dnl Now see whether we need a substitute <stdint.h>.
+  if test $ac_cv_header_stdint_h = yes; then
+    AC_CACHE_CHECK([whether stdint.h conforms to C99],
+      [gl_cv_header_working_stdint_h],
+      [gl_cv_header_working_stdint_h=no
+       AC_COMPILE_IFELSE([
+         AC_LANG_PROGRAM([[
+#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
+#define __STDC_CONSTANT_MACROS 1
+#define __STDC_LIMIT_MACROS 1
+#include <stdint.h>
+/* Dragonfly defines WCHAR_MIN, WCHAR_MAX only in <wchar.h>.  */
+#if !(defined WCHAR_MIN && defined WCHAR_MAX)
+#error "WCHAR_MIN, WCHAR_MAX not defined in <stdint.h>"
+#endif
+]
+gl_STDINT_INCLUDES
+[
+#ifdef INT8_MAX
+int8_t a1 = INT8_MAX;
+int8_t a1min = INT8_MIN;
+#endif
+#ifdef INT16_MAX
+int16_t a2 = INT16_MAX;
+int16_t a2min = INT16_MIN;
+#endif
+#ifdef INT32_MAX
+int32_t a3 = INT32_MAX;
+int32_t a3min = INT32_MIN;
+#endif
+#ifdef INT64_MAX
+int64_t a4 = INT64_MAX;
+int64_t a4min = INT64_MIN;
+#endif
+#ifdef UINT8_MAX
+uint8_t b1 = UINT8_MAX;
+#else
+typedef int b1[(unsigned char) -1 != 255 ? 1 : -1];
+#endif
+#ifdef UINT16_MAX
+uint16_t b2 = UINT16_MAX;
+#endif
+#ifdef UINT32_MAX
+uint32_t b3 = UINT32_MAX;
+#endif
+#ifdef UINT64_MAX
+uint64_t b4 = UINT64_MAX;
+#endif
+int_least8_t c1 = INT8_C (0x7f);
+int_least8_t c1max = INT_LEAST8_MAX;
+int_least8_t c1min = INT_LEAST8_MIN;
+int_least16_t c2 = INT16_C (0x7fff);
+int_least16_t c2max = INT_LEAST16_MAX;
+int_least16_t c2min = INT_LEAST16_MIN;
+int_least32_t c3 = INT32_C (0x7fffffff);
+int_least32_t c3max = INT_LEAST32_MAX;
+int_least32_t c3min = INT_LEAST32_MIN;
+int_least64_t c4 = INT64_C (0x7fffffffffffffff);
+int_least64_t c4max = INT_LEAST64_MAX;
+int_least64_t c4min = INT_LEAST64_MIN;
+uint_least8_t d1 = UINT8_C (0xff);
+uint_least8_t d1max = UINT_LEAST8_MAX;
+uint_least16_t d2 = UINT16_C (0xffff);
+uint_least16_t d2max = UINT_LEAST16_MAX;
+uint_least32_t d3 = UINT32_C (0xffffffff);
+uint_least32_t d3max = UINT_LEAST32_MAX;
+uint_least64_t d4 = UINT64_C (0xffffffffffffffff);
+uint_least64_t d4max = UINT_LEAST64_MAX;
+int_fast8_t e1 = INT_FAST8_MAX;
+int_fast8_t e1min = INT_FAST8_MIN;
+int_fast16_t e2 = INT_FAST16_MAX;
+int_fast16_t e2min = INT_FAST16_MIN;
+int_fast32_t e3 = INT_FAST32_MAX;
+int_fast32_t e3min = INT_FAST32_MIN;
+int_fast64_t e4 = INT_FAST64_MAX;
+int_fast64_t e4min = INT_FAST64_MIN;
+uint_fast8_t f1 = UINT_FAST8_MAX;
+uint_fast16_t f2 = UINT_FAST16_MAX;
+uint_fast32_t f3 = UINT_FAST32_MAX;
+uint_fast64_t f4 = UINT_FAST64_MAX;
+#ifdef INTPTR_MAX
+intptr_t g = INTPTR_MAX;
+intptr_t gmin = INTPTR_MIN;
+#endif
+#ifdef UINTPTR_MAX
+uintptr_t h = UINTPTR_MAX;
+#endif
+intmax_t i = INTMAX_MAX;
+uintmax_t j = UINTMAX_MAX;
+
+/* Check that SIZE_MAX has the correct type, if possible.  */
+#if 201112 <= __STDC_VERSION__
+int k = _Generic (SIZE_MAX, size_t: 0);
+#elif (2 <= __GNUC__ || 4 <= __clang_major__ || defined __IBM__TYPEOF__ \
+       || (0x5110 <= __SUNPRO_C && !__STDC__))
+extern size_t k;
+extern __typeof__ (SIZE_MAX) k;
+#endif
+
+#include <limits.h> /* for CHAR_BIT */
+#define TYPE_MINIMUM(t) \
+  ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ TYPE_MAXIMUM (t)))
+#define TYPE_MAXIMUM(t) \
+  ((t) ((t) 0 < (t) -1 \
+        ? (t) -1 \
+        : ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1)))
+struct s {
+  int check_PTRDIFF:
+      PTRDIFF_MIN == TYPE_MINIMUM (ptrdiff_t)
+      && PTRDIFF_MAX == TYPE_MAXIMUM (ptrdiff_t)
+      ? 1 : -1;
+  /* Detect bug in FreeBSD 6.0/ia64 and FreeBSD 13.0/arm64.  */
+  int check_SIG_ATOMIC:
+      SIG_ATOMIC_MIN == TYPE_MINIMUM (sig_atomic_t)
+      && SIG_ATOMIC_MAX == TYPE_MAXIMUM (sig_atomic_t)
+      ? 1 : -1;
+  int check_SIZE: SIZE_MAX == TYPE_MAXIMUM (size_t) ? 1 : -1;
+  int check_WCHAR:
+      WCHAR_MIN == TYPE_MINIMUM (wchar_t)
+      && WCHAR_MAX == TYPE_MAXIMUM (wchar_t)
+      ? 1 : -1;
+  /* Detect bug in mingw.  */
+  int check_WINT:
+      WINT_MIN == TYPE_MINIMUM (wint_t)
+      && WINT_MAX == TYPE_MAXIMUM (wint_t)
+      ? 1 : -1;
+
+  /* Detect bugs in glibc 2.4 and Solaris 10 stdint.h, among others.  */
+  int check_UINT8_C:
+        (-1 < UINT8_C (0)) == (-1 < (uint_least8_t) 0) ? 1 : -1;
+  int check_UINT16_C:
+        (-1 < UINT16_C (0)) == (-1 < (uint_least16_t) 0) ? 1 : -1;
+
+  /* Detect bugs in OpenBSD 3.9 stdint.h.  */
+#ifdef UINT8_MAX
+  int check_uint8: (uint8_t) -1 == UINT8_MAX ? 1 : -1;
+#endif
+#ifdef UINT16_MAX
+  int check_uint16: (uint16_t) -1 == UINT16_MAX ? 1 : -1;
+#endif
+#ifdef UINT32_MAX
+  int check_uint32: (uint32_t) -1 == UINT32_MAX ? 1 : -1;
+#endif
+#ifdef UINT64_MAX
+  int check_uint64: (uint64_t) -1 == UINT64_MAX ? 1 : -1;
+#endif
+  int check_uint_least8: (uint_least8_t) -1 == UINT_LEAST8_MAX ? 1 : -1;
+  int check_uint_least16: (uint_least16_t) -1 == UINT_LEAST16_MAX ? 1 : -1;
+  int check_uint_least32: (uint_least32_t) -1 == UINT_LEAST32_MAX ? 1 : -1;
+  int check_uint_least64: (uint_least64_t) -1 == UINT_LEAST64_MAX ? 1 : -1;
+  int check_uint_fast8: (uint_fast8_t) -1 == UINT_FAST8_MAX ? 1 : -1;
+  int check_uint_fast16: (uint_fast16_t) -1 == UINT_FAST16_MAX ? 1 : -1;
+  int check_uint_fast32: (uint_fast32_t) -1 == UINT_FAST32_MAX ? 1 : -1;
+  int check_uint_fast64: (uint_fast64_t) -1 == UINT_FAST64_MAX ? 1 : -1;
+  int check_uintptr: (uintptr_t) -1 == UINTPTR_MAX ? 1 : -1;
+  int check_uintmax: (uintmax_t) -1 == UINTMAX_MAX ? 1 : -1;
+  int check_size: (size_t) -1 == SIZE_MAX ? 1 : -1;
+};
+         ]])],
+         [dnl Determine whether the various *_MIN, *_MAX macros are usable
+          dnl in preprocessor expression. We could do it by compiling a test
+          dnl program for each of these macros. It is faster to run a program
+          dnl that inspects the macro expansion.
+          dnl This detects a bug on HP-UX 11.23/ia64.
+          AC_RUN_IFELSE([
+            AC_LANG_PROGRAM([[
+#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
+#define __STDC_CONSTANT_MACROS 1
+#define __STDC_LIMIT_MACROS 1
+#include <stdint.h>
+]
+gl_STDINT_INCLUDES
+[
+#include <stdio.h>
+#include <string.h>
+#define MVAL(macro) MVAL1(macro)
+#define MVAL1(expression) #expression
+static const char *macro_values[] =
+  {
+#ifdef INT8_MAX
+    MVAL (INT8_MAX),
+#endif
+#ifdef INT16_MAX
+    MVAL (INT16_MAX),
+#endif
+#ifdef INT32_MAX
+    MVAL (INT32_MAX),
+#endif
+#ifdef INT64_MAX
+    MVAL (INT64_MAX),
+#endif
+#ifdef UINT8_MAX
+    MVAL (UINT8_MAX),
+#endif
+#ifdef UINT16_MAX
+    MVAL (UINT16_MAX),
+#endif
+#ifdef UINT32_MAX
+    MVAL (UINT32_MAX),
+#endif
+#ifdef UINT64_MAX
+    MVAL (UINT64_MAX),
+#endif
+    NULL
+  };
+]], [[
+  const char **mv;
+  for (mv = macro_values; *mv != NULL; mv++)
+    {
+      const char *value = *mv;
+      /* Test whether it looks like a cast expression.  */
+      if (strncmp (value, "((unsigned int)"/*)*/, 15) == 0
+          || strncmp (value, "((unsigned short)"/*)*/, 17) == 0
+          || strncmp (value, "((unsigned char)"/*)*/, 16) == 0
+          || strncmp (value, "((int)"/*)*/, 6) == 0
+          || strncmp (value, "((signed short)"/*)*/, 15) == 0
+          || strncmp (value, "((signed char)"/*)*/, 14) == 0)
+        return mv - macro_values + 1;
+    }
+  return 0;
+]])],
+              [gl_cv_header_working_stdint_h=yes],
+              [],
+              [case "$host_os" in
+                         # Guess yes on native Windows.
+                 mingw*) gl_cv_header_working_stdint_h="guessing yes" ;;
+                         # In general, assume it works.
+                 *)      gl_cv_header_working_stdint_h="guessing yes" ;;
+               esac
+              ])
+         ])
+      ])
+  fi
+
+  HAVE_C99_STDINT_H=0
+  HAVE_SYS_BITYPES_H=0
+  HAVE_SYS_INTTYPES_H=0
+  STDINT_H=stdint.h
+  case "$gl_cv_header_working_stdint_h" in
+    *yes)
+      HAVE_C99_STDINT_H=1
+      dnl Now see whether the system <stdint.h> works without
+      dnl __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS defined.
+      dnl If not, there would be problems when stdint.h is included from C++.
+      AC_CACHE_CHECK([whether stdint.h works without ISO C predefines],
+        [gl_cv_header_stdint_without_STDC_macros],
+        [gl_cv_header_stdint_without_STDC_macros=no
+         AC_COMPILE_IFELSE([
+           AC_LANG_PROGRAM([[
+#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
+#include <stdint.h>
+]
+gl_STDINT_INCLUDES
+[
+intmax_t im = INTMAX_MAX;
+int32_t i32 = INT32_C (0x7fffffff);
+           ]])],
+           [gl_cv_header_stdint_without_STDC_macros=yes])
+        ])
+
+      if test $gl_cv_header_stdint_without_STDC_macros = no; then
+        AC_DEFINE([__STDC_CONSTANT_MACROS], [1],
+          [Define to 1 if the system <stdint.h> predates C++11.])
+        AC_DEFINE([__STDC_LIMIT_MACROS], [1],
+          [Define to 1 if the system <stdint.h> predates C++11.])
+      fi
+      AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.],
+        [gl_cv_header_stdint_width],
+        [gl_cv_header_stdint_width=no
+         AC_COMPILE_IFELSE(
+           [AC_LANG_PROGRAM([[
+              /* Work if build is not clean.  */
+              #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1
+              #ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+               #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
+              #endif
+              #include <stdint.h>
+              ]gl_STDINT_INCLUDES[
+              int iw = UINTMAX_WIDTH;
+              ]])],
+           [gl_cv_header_stdint_width=yes])])
+      if test "$gl_cv_header_stdint_width" = yes; then
+        STDINT_H=
+      fi
+      ;;
+    *)
+      dnl Check for <sys/inttypes.h>, and for
+      dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5).
+      AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h])
+      if test $ac_cv_header_sys_inttypes_h = yes; then
+        HAVE_SYS_INTTYPES_H=1
+      fi
+      if test $ac_cv_header_sys_bitypes_h = yes; then
+        HAVE_SYS_BITYPES_H=1
+      fi
+      gl_STDINT_TYPE_PROPERTIES
+      ;;
+  esac
+
+  dnl The substitute stdint.h needs the substitute limit.h's _GL_INTEGER_WIDTH.
+  gl_REPLACE_LIMITS_H
+
+  AC_SUBST([HAVE_C99_STDINT_H])
+  AC_SUBST([HAVE_SYS_BITYPES_H])
+  AC_SUBST([HAVE_SYS_INTTYPES_H])
+  AC_SUBST([STDINT_H])
+  AM_CONDITIONAL([GL_GENERATE_STDINT_H], [test -n "$STDINT_H"])
+])
+
+dnl gl_STDINT_BITSIZEOF(TYPES, INCLUDES)
+dnl Determine the size of each of the given types in bits.
+AC_DEFUN([gl_STDINT_BITSIZEOF],
+[
+  dnl Use a shell loop, to avoid bloating configure, and
+  dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into
+  dnl   config.h.in,
+  dnl - extra AC_SUBST calls, so that the right substitutions are made.
+  m4_foreach_w([gltype], [$1],
+    [AH_TEMPLATE([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]),
+       [Define to the number of bits in type ']gltype['.])])
+  for gltype in $1 ; do
+    AC_CACHE_CHECK([for bit size of $gltype], [gl_cv_bitsizeof_${gltype}],
+      [AC_COMPUTE_INT([result], [sizeof ($gltype) * CHAR_BIT],
+         [$2
+#include <limits.h>], [result=unknown])
+       eval gl_cv_bitsizeof_${gltype}=\$result
+      ])
+    eval result=\$gl_cv_bitsizeof_${gltype}
+    if test $result = unknown; then
+      dnl Use a nonempty default, because some compilers, such as IRIX 5 cc,
+      dnl do a syntax check even on unused #if conditions and give an error
+      dnl on valid C code like this:
+      dnl   #if 0
+      dnl   # if  > 32
+      dnl   # endif
+      dnl   #endif
+      result=0
+    fi
+    GLTYPE=`echo "$gltype" | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
+    AC_DEFINE_UNQUOTED([BITSIZEOF_${GLTYPE}], [$result])
+    eval BITSIZEOF_${GLTYPE}=\$result
+  done
+  m4_foreach_w([gltype], [$1],
+    [AC_SUBST([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))])
+])
+
+dnl gl_CHECK_TYPES_SIGNED(TYPES, INCLUDES)
+dnl Determine the signedness of each of the given types.
+dnl Define HAVE_SIGNED_TYPE if type is signed.
+AC_DEFUN([gl_CHECK_TYPES_SIGNED],
+[
+  dnl Use a shell loop, to avoid bloating configure, and
+  dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into
+  dnl   config.h.in,
+  dnl - extra AC_SUBST calls, so that the right substitutions are made.
+  m4_foreach_w([gltype], [$1],
+    [AH_TEMPLATE([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]),
+       [Define to 1 if ']gltype[' is a signed integer type.])])
+  for gltype in $1 ; do
+    AC_CACHE_CHECK([whether $gltype is signed], [gl_cv_type_${gltype}_signed],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([$2[
+            int verify[2 * (($gltype) -1 < ($gltype) 0) - 1];]])],
+         result=yes, result=no)
+       eval gl_cv_type_${gltype}_signed=\$result
+      ])
+    eval result=\$gl_cv_type_${gltype}_signed
+    GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
+    if test "$result" = yes; then
+      AC_DEFINE_UNQUOTED([HAVE_SIGNED_${GLTYPE}], [1])
+      eval HAVE_SIGNED_${GLTYPE}=1
+    else
+      eval HAVE_SIGNED_${GLTYPE}=0
+    fi
+  done
+  m4_foreach_w([gltype], [$1],
+    [AC_SUBST([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))])
+])
+
+dnl gl_INTEGER_TYPE_SUFFIX(TYPES, INCLUDES)
+dnl Determine the suffix to use for integer constants of the given types.
+dnl Define t_SUFFIX for each such type.
+AC_DEFUN([gl_INTEGER_TYPE_SUFFIX],
+[
+  dnl Use a shell loop, to avoid bloating configure, and
+  dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into
+  dnl   config.h.in,
+  dnl - extra AC_SUBST calls, so that the right substitutions are made.
+  m4_foreach_w([gltype], [$1],
+    [AH_TEMPLATE(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX],
+       [Define to l, ll, u, ul, ull, etc., as suitable for
+        constants of type ']gltype['.])])
+  for gltype in $1 ; do
+    AC_CACHE_CHECK([for $gltype integer literal suffix],
+      [gl_cv_type_${gltype}_suffix],
+      [eval gl_cv_type_${gltype}_suffix=no
+       eval result=\$gl_cv_type_${gltype}_signed
+       if test "$result" = yes; then
+         glsufu=
+       else
+         glsufu=u
+       fi
+       for glsuf in "$glsufu" ${glsufu}l ${glsufu}ll ${glsufu}i64; do
+         case $glsuf in
+           '')  gltype1='int';;
+           l)   gltype1='long int';;
+           ll)  gltype1='long long int';;
+           i64) gltype1='__int64';;
+           u)   gltype1='unsigned int';;
+           ul)  gltype1='unsigned long int';;
+           ull) gltype1='unsigned long long int';;
+           ui64)gltype1='unsigned __int64';;
+         esac
+         AC_COMPILE_IFELSE(
+           [AC_LANG_PROGRAM([$2[
+              extern $gltype foo;
+              extern $gltype1 foo;]])],
+           [eval gl_cv_type_${gltype}_suffix=\$glsuf])
+         eval result=\$gl_cv_type_${gltype}_suffix
+         test "$result" != no && break
+       done])
+    GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
+    eval result=\$gl_cv_type_${gltype}_suffix
+    test "$result" = no && result=
+    eval ${GLTYPE}_SUFFIX=\$result
+    AC_DEFINE_UNQUOTED([${GLTYPE}_SUFFIX], [$result])
+  done
+  m4_foreach_w([gltype], [$1],
+    [AC_SUBST(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX])])
+])
+
+dnl gl_STDINT_INCLUDES
+AC_DEFUN([gl_STDINT_INCLUDES],
+[[
+  #include <stddef.h>
+  #include <signal.h>
+  #if HAVE_WCHAR_H
+  # include <wchar.h>
+  #endif
+]])
+
+dnl gl_STDINT_TYPE_PROPERTIES
+dnl Compute HAVE_SIGNED_t, BITSIZEOF_t and t_SUFFIX, for all the types t
+dnl of interest to stdint.in.h.
+AC_DEFUN([gl_STDINT_TYPE_PROPERTIES],
+[
+  AC_REQUIRE([gl_MULTIARCH])
+  if test $APPLE_UNIVERSAL_BUILD = 0; then
+    gl_STDINT_BITSIZEOF([ptrdiff_t size_t],
+      [gl_STDINT_INCLUDES])
+  fi
+  gl_STDINT_BITSIZEOF([sig_atomic_t wchar_t wint_t],
+    [gl_STDINT_INCLUDES])
+  gl_CHECK_TYPES_SIGNED([sig_atomic_t wchar_t wint_t],
+    [gl_STDINT_INCLUDES])
+  gl_cv_type_ptrdiff_t_signed=yes
+  gl_cv_type_size_t_signed=no
+  if test $APPLE_UNIVERSAL_BUILD = 0; then
+    gl_INTEGER_TYPE_SUFFIX([ptrdiff_t size_t],
+      [gl_STDINT_INCLUDES])
+  fi
+  gl_INTEGER_TYPE_SUFFIX([sig_atomic_t wchar_t wint_t],
+    [gl_STDINT_INCLUDES])
+
+  dnl If wint_t is smaller than 'int', it cannot satisfy the ISO C 99
+  dnl requirement that wint_t is "unchanged by default argument promotions".
+  dnl In this case gnulib's <wchar.h> and <wctype.h> override wint_t.
+  dnl Set the variable BITSIZEOF_WINT_T accordingly.
+  if test $GNULIBHEADERS_OVERRIDE_WINT_T = 1; then
+    BITSIZEOF_WINT_T=32
+  fi
+])
diff --git a/src/grep/m4/stdint_h.m4 b/src/grep/m4/stdint_h.m4
new file mode 100644
index 0000000..18aa50a
--- /dev/null
+++ b/src/grep/m4/stdint_h.m4
@@ -0,0 +1,27 @@
+# stdint_h.m4 serial 9
+dnl Copyright (C) 1997-2004, 2006, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert.
+
+# Define HAVE_STDINT_H_WITH_UINTMAX if <stdint.h> exists,
+# doesn't clash with <sys/types.h>, and declares uintmax_t.
+
+AC_DEFUN([gl_AC_HEADER_STDINT_H],
+[
+  AC_CACHE_CHECK([for stdint.h], [gl_cv_header_stdint_h],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <sys/types.h>
+            #include <stdint.h>]],
+          [[uintmax_t i = (uintmax_t) -1; return !i;]])],
+       [gl_cv_header_stdint_h=yes],
+       [gl_cv_header_stdint_h=no])])
+  if test $gl_cv_header_stdint_h = yes; then
+    AC_DEFINE_UNQUOTED([HAVE_STDINT_H_WITH_UINTMAX], [1],
+      [Define if <stdint.h> exists, doesn't clash with <sys/types.h>,
+       and declares uintmax_t. ])
+  fi
+])
diff --git a/src/grep/m4/stdio_h.m4 b/src/grep/m4/stdio_h.m4
new file mode 100644
index 0000000..e704383
--- /dev/null
+++ b/src/grep/m4/stdio_h.m4
@@ -0,0 +1,232 @@
+# stdio_h.m4 serial 56
+dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_STDIO_H],
+[
+  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+  AH_VERBATIM([MINGW_ANSI_STDIO],
+[/* Use GNU style printf and scanf.  */
+#ifndef __USE_MINGW_ANSI_STDIO
+# undef __USE_MINGW_ANSI_STDIO
+#endif
+])
+  AC_DEFINE([__USE_MINGW_ANSI_STDIO])
+  gl_NEXT_HEADERS([stdio.h])
+
+  dnl Determine whether __USE_MINGW_ANSI_STDIO makes printf and
+  dnl inttypes.h behave like gnu instead of system; we must give our
+  dnl printf wrapper the right attribute to match.
+  AC_CACHE_CHECK([which flavor of printf attribute matches inttypes macros],
+    [gl_cv_func_printf_attribute_flavor],
+    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+       #define __STDC_FORMAT_MACROS 1
+       #include <stdio.h>
+       #include <inttypes.h>
+       /* For non-mingw systems, compilation will trivially succeed.
+          For mingw, compilation will succeed for older mingw (system
+          printf, "I64d") and fail for newer mingw (gnu printf, "lld"). */
+       #if (defined _WIN32 && ! defined __CYGWIN__) && \
+         (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+       extern char PRIdMAX_probe[sizeof PRIdMAX == sizeof "I64d" ? 1 : -1];
+       #endif
+      ]])], [gl_cv_func_printf_attribute_flavor=system],
+      [gl_cv_func_printf_attribute_flavor=gnu])])
+  if test "$gl_cv_func_printf_attribute_flavor" = gnu; then
+    AC_DEFINE([GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU], [1],
+      [Define to 1 if printf and friends should be labeled with
+       attribute "__gnu_printf__" instead of "__printf__"])
+  fi
+
+  dnl This ifdef is necessary to avoid an error "missing file lib/stdio-read.c"
+  dnl "expected source file, required through AC_LIBSOURCES, not found". It is
+  dnl also an optimization, to avoid performing a configure check whose result
+  dnl is not used. But it does not make the test of GNULIB_STDIO_H_NONBLOCKING
+  dnl or GNULIB_NONBLOCKING redundant.
+  m4_ifdef([gl_NONBLOCKING_IO], [
+    gl_NONBLOCKING_IO
+    if test $gl_cv_have_nonblocking != yes; then
+      REPLACE_STDIO_READ_FUNCS=1
+      AC_LIBOBJ([stdio-read])
+    fi
+  ])
+
+  dnl This ifdef is necessary to avoid an error "missing file lib/stdio-write.c"
+  dnl "expected source file, required through AC_LIBSOURCES, not found". It is
+  dnl also an optimization, to avoid performing a configure check whose result
+  dnl is not used. But it does not make the test of GNULIB_STDIO_H_SIGPIPE or
+  dnl GNULIB_SIGPIPE redundant.
+  m4_ifdef([gl_SIGNAL_SIGPIPE], [
+    gl_SIGNAL_SIGPIPE
+    if test $gl_cv_header_signal_h_SIGPIPE != yes; then
+      REPLACE_STDIO_WRITE_FUNCS=1
+      AC_LIBOBJ([stdio-write])
+    fi
+  ])
+  dnl This ifdef is necessary to avoid an error "missing file lib/stdio-write.c"
+  dnl "expected source file, required through AC_LIBSOURCES, not found". It is
+  dnl also an optimization, to avoid performing a configure check whose result
+  dnl is not used. But it does not make the test of GNULIB_STDIO_H_NONBLOCKING
+  dnl or GNULIB_NONBLOCKING redundant.
+  m4_ifdef([gl_NONBLOCKING_IO], [
+    gl_NONBLOCKING_IO
+    if test $gl_cv_have_nonblocking != yes; then
+      REPLACE_STDIO_WRITE_FUNCS=1
+      AC_LIBOBJ([stdio-write])
+    fi
+  ])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use, and which is not
+  dnl guaranteed by both C89 and C11.
+  gl_WARN_ON_USE_PREPARE([[#include <stdio.h>
+    ]], [dprintf fpurge fseeko ftello getdelim getline gets pclose popen
+    renameat snprintf tmpfile vdprintf vsnprintf])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+
+  AC_CHECK_DECLS_ONCE([fcloseall])
+  if test $ac_cv_have_decl_fcloseall = no; then
+    HAVE_DECL_FCLOSEALL=0
+  fi
+])
+
+# gl_STDIO_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_STDIO_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_STDIO_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_STDIO_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_STDIO_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DPRINTF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCLOSE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FDOPEN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FFLUSH])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FGETC])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FGETS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FOPEN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FPRINTF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FPRINTF_POSIX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FPURGE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FPUTC])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FPUTS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FREAD])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FREOPEN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSCANF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSEEK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSEEKO])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FTELL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FTELLO])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FWRITE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETC])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETCHAR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETDELIM])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLINE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OBSTACK_PRINTF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OBSTACK_PRINTF_POSIX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PCLOSE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PERROR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POPEN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PRINTF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PRINTF_POSIX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PUTC])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PUTCHAR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PUTS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REMOVE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RENAME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RENAMEAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SCANF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SNPRINTF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SPRINTF_POSIX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STDIO_H_NONBLOCKING])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STDIO_H_SIGPIPE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TMPFILE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VASPRINTF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VFSCANF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VSCANF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VDPRINTF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VFPRINTF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VFPRINTF_POSIX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VPRINTF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VPRINTF_POSIX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VSNPRINTF])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VSPRINTF_POSIX])
+    dnl Support Microsoft deprecated alias function names by default.
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_FCLOSEALL], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_FDOPEN], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_FILENO], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GETW], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_PUTW], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_TEMPNAM], [1])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_STDIO_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_STDIO_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_DECL_FCLOSEALL=1;         AC_SUBST([HAVE_DECL_FCLOSEALL])
+  HAVE_DECL_FPURGE=1;            AC_SUBST([HAVE_DECL_FPURGE])
+  HAVE_DECL_FSEEKO=1;            AC_SUBST([HAVE_DECL_FSEEKO])
+  HAVE_DECL_FTELLO=1;            AC_SUBST([HAVE_DECL_FTELLO])
+  HAVE_DECL_GETDELIM=1;          AC_SUBST([HAVE_DECL_GETDELIM])
+  HAVE_DECL_GETLINE=1;           AC_SUBST([HAVE_DECL_GETLINE])
+  HAVE_DECL_OBSTACK_PRINTF=1;    AC_SUBST([HAVE_DECL_OBSTACK_PRINTF])
+  HAVE_DECL_SNPRINTF=1;          AC_SUBST([HAVE_DECL_SNPRINTF])
+  HAVE_DECL_VSNPRINTF=1;         AC_SUBST([HAVE_DECL_VSNPRINTF])
+  HAVE_DPRINTF=1;                AC_SUBST([HAVE_DPRINTF])
+  HAVE_FSEEKO=1;                 AC_SUBST([HAVE_FSEEKO])
+  HAVE_FTELLO=1;                 AC_SUBST([HAVE_FTELLO])
+  HAVE_PCLOSE=1;                 AC_SUBST([HAVE_PCLOSE])
+  HAVE_POPEN=1;                  AC_SUBST([HAVE_POPEN])
+  HAVE_RENAMEAT=1;               AC_SUBST([HAVE_RENAMEAT])
+  HAVE_VASPRINTF=1;              AC_SUBST([HAVE_VASPRINTF])
+  HAVE_VDPRINTF=1;               AC_SUBST([HAVE_VDPRINTF])
+  REPLACE_DPRINTF=0;             AC_SUBST([REPLACE_DPRINTF])
+  REPLACE_FCLOSE=0;              AC_SUBST([REPLACE_FCLOSE])
+  REPLACE_FDOPEN=0;              AC_SUBST([REPLACE_FDOPEN])
+  REPLACE_FFLUSH=0;              AC_SUBST([REPLACE_FFLUSH])
+  REPLACE_FOPEN=0;               AC_SUBST([REPLACE_FOPEN])
+  REPLACE_FPRINTF=0;             AC_SUBST([REPLACE_FPRINTF])
+  REPLACE_FPURGE=0;              AC_SUBST([REPLACE_FPURGE])
+  REPLACE_FREOPEN=0;             AC_SUBST([REPLACE_FREOPEN])
+  REPLACE_FSEEK=0;               AC_SUBST([REPLACE_FSEEK])
+  REPLACE_FSEEKO=0;              AC_SUBST([REPLACE_FSEEKO])
+  REPLACE_FTELL=0;               AC_SUBST([REPLACE_FTELL])
+  REPLACE_FTELLO=0;              AC_SUBST([REPLACE_FTELLO])
+  REPLACE_GETDELIM=0;            AC_SUBST([REPLACE_GETDELIM])
+  REPLACE_GETLINE=0;             AC_SUBST([REPLACE_GETLINE])
+  REPLACE_OBSTACK_PRINTF=0;      AC_SUBST([REPLACE_OBSTACK_PRINTF])
+  REPLACE_PERROR=0;              AC_SUBST([REPLACE_PERROR])
+  REPLACE_POPEN=0;               AC_SUBST([REPLACE_POPEN])
+  REPLACE_PRINTF=0;              AC_SUBST([REPLACE_PRINTF])
+  REPLACE_REMOVE=0;              AC_SUBST([REPLACE_REMOVE])
+  REPLACE_RENAME=0;              AC_SUBST([REPLACE_RENAME])
+  REPLACE_RENAMEAT=0;            AC_SUBST([REPLACE_RENAMEAT])
+  REPLACE_SNPRINTF=0;            AC_SUBST([REPLACE_SNPRINTF])
+  REPLACE_SPRINTF=0;             AC_SUBST([REPLACE_SPRINTF])
+  REPLACE_STDIO_READ_FUNCS=0;    AC_SUBST([REPLACE_STDIO_READ_FUNCS])
+  REPLACE_STDIO_WRITE_FUNCS=0;   AC_SUBST([REPLACE_STDIO_WRITE_FUNCS])
+  REPLACE_TMPFILE=0;             AC_SUBST([REPLACE_TMPFILE])
+  REPLACE_VASPRINTF=0;           AC_SUBST([REPLACE_VASPRINTF])
+  REPLACE_VDPRINTF=0;            AC_SUBST([REPLACE_VDPRINTF])
+  REPLACE_VFPRINTF=0;            AC_SUBST([REPLACE_VFPRINTF])
+  REPLACE_VPRINTF=0;             AC_SUBST([REPLACE_VPRINTF])
+  REPLACE_VSNPRINTF=0;           AC_SUBST([REPLACE_VSNPRINTF])
+  REPLACE_VSPRINTF=0;            AC_SUBST([REPLACE_VSPRINTF])
+])
diff --git a/src/grep/m4/stdlib_h.m4 b/src/grep/m4/stdlib_h.m4
new file mode 100644
index 0000000..9c1d1c7
--- /dev/null
+++ b/src/grep/m4/stdlib_h.m4
@@ -0,0 +1,194 @@
+# stdlib_h.m4 serial 63
+dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_STDLIB_H],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  gl_NEXT_HEADERS([stdlib.h])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use, and which is not
+  dnl guaranteed by C89.
+  gl_WARN_ON_USE_PREPARE([[#include <stdlib.h>
+#if HAVE_SYS_LOADAVG_H
+/* OpenIndiana has a bug: <sys/time.h> must be included before
+   <sys/loadavg.h>.  */
+# include <sys/time.h>
+# include <sys/loadavg.h>
+#endif
+#if HAVE_RANDOM_H
+# include <random.h>
+#endif
+    ]], [_Exit aligned_alloc atoll canonicalize_file_name free
+    getloadavg getsubopt grantpt
+    initstate initstate_r mbtowc mkdtemp mkostemp mkostemps mkstemp mkstemps
+    posix_memalign posix_openpt ptsname ptsname_r qsort_r
+    random random_r reallocarray realpath rpmatch secure_getenv setenv
+    setstate setstate_r srandom srandom_r
+    strtod strtol strtold strtoll strtoul strtoull unlockpt unsetenv])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+
+  AC_CHECK_DECLS_ONCE([ecvt])
+  if test $ac_cv_have_decl_ecvt = no; then
+    HAVE_DECL_ECVT=0
+  fi
+  AC_CHECK_DECLS_ONCE([fcvt])
+  if test $ac_cv_have_decl_fcvt = no; then
+    HAVE_DECL_FCVT=0
+  fi
+  AC_CHECK_DECLS_ONCE([gcvt])
+  if test $ac_cv_have_decl_gcvt = no; then
+    HAVE_DECL_GCVT=0
+  fi
+])
+
+# gl_STDLIB_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_STDLIB_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_STDLIB_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_STDLIB_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_STDLIB_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB__EXIT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ALIGNED_ALLOC])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ATOLL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CALLOC_POSIX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CANONICALIZE_FILE_NAME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FREE_POSIX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOADAVG])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETSUBOPT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GRANTPT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MALLOC_POSIX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBTOWC])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKDTEMP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKOSTEMP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKOSTEMPS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKSTEMP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKSTEMPS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_MEMALIGN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_OPENPT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTSNAME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTSNAME_R])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PUTENV])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_QSORT_R])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RANDOM])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RANDOM_R])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REALLOCARRAY])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REALLOC_POSIX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REALPATH])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RPMATCH])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SECURE_GETENV])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETENV])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOD])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOLD])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOLL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOUL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOULL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYSTEM_POSIX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLOCKPT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNSETENV])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCTOMB])
+    dnl Support Microsoft deprecated alias function names by default.
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ECVT], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_FCVT], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GCVT], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_MKTEMP], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_PUTENV], [1])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_STDLIB_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_STDLIB_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE__EXIT=1;              AC_SUBST([HAVE__EXIT])
+  HAVE_ALIGNED_ALLOC=1;      AC_SUBST([HAVE_ALIGNED_ALLOC])
+  HAVE_ATOLL=1;              AC_SUBST([HAVE_ATOLL])
+  HAVE_CANONICALIZE_FILE_NAME=1;  AC_SUBST([HAVE_CANONICALIZE_FILE_NAME])
+  HAVE_DECL_ECVT=1;          AC_SUBST([HAVE_DECL_ECVT])
+  HAVE_DECL_FCVT=1;          AC_SUBST([HAVE_DECL_FCVT])
+  HAVE_DECL_GCVT=1;          AC_SUBST([HAVE_DECL_GCVT])
+  HAVE_DECL_GETLOADAVG=1;    AC_SUBST([HAVE_DECL_GETLOADAVG])
+  HAVE_GETSUBOPT=1;          AC_SUBST([HAVE_GETSUBOPT])
+  HAVE_GRANTPT=1;            AC_SUBST([HAVE_GRANTPT])
+  HAVE_INITSTATE=1;          AC_SUBST([HAVE_INITSTATE])
+  HAVE_DECL_INITSTATE=1;     AC_SUBST([HAVE_DECL_INITSTATE])
+  HAVE_MBTOWC=1;             AC_SUBST([HAVE_MBTOWC])
+  HAVE_MKDTEMP=1;            AC_SUBST([HAVE_MKDTEMP])
+  HAVE_MKOSTEMP=1;           AC_SUBST([HAVE_MKOSTEMP])
+  HAVE_MKOSTEMPS=1;          AC_SUBST([HAVE_MKOSTEMPS])
+  HAVE_MKSTEMP=1;            AC_SUBST([HAVE_MKSTEMP])
+  HAVE_MKSTEMPS=1;           AC_SUBST([HAVE_MKSTEMPS])
+  HAVE_POSIX_MEMALIGN=1;     AC_SUBST([HAVE_POSIX_MEMALIGN])
+  HAVE_POSIX_OPENPT=1;       AC_SUBST([HAVE_POSIX_OPENPT])
+  HAVE_PTSNAME=1;            AC_SUBST([HAVE_PTSNAME])
+  HAVE_PTSNAME_R=1;          AC_SUBST([HAVE_PTSNAME_R])
+  HAVE_QSORT_R=1;            AC_SUBST([HAVE_QSORT_R])
+  HAVE_RANDOM=1;             AC_SUBST([HAVE_RANDOM])
+  HAVE_RANDOM_H=1;           AC_SUBST([HAVE_RANDOM_H])
+  HAVE_RANDOM_R=1;           AC_SUBST([HAVE_RANDOM_R])
+  HAVE_REALLOCARRAY=1;       AC_SUBST([HAVE_REALLOCARRAY])
+  HAVE_REALPATH=1;           AC_SUBST([HAVE_REALPATH])
+  HAVE_RPMATCH=1;            AC_SUBST([HAVE_RPMATCH])
+  HAVE_SECURE_GETENV=1;      AC_SUBST([HAVE_SECURE_GETENV])
+  HAVE_SETENV=1;             AC_SUBST([HAVE_SETENV])
+  HAVE_DECL_SETENV=1;        AC_SUBST([HAVE_DECL_SETENV])
+  HAVE_SETSTATE=1;           AC_SUBST([HAVE_SETSTATE])
+  HAVE_DECL_SETSTATE=1;      AC_SUBST([HAVE_DECL_SETSTATE])
+  HAVE_STRTOD=1;             AC_SUBST([HAVE_STRTOD])
+  HAVE_STRTOL=1;             AC_SUBST([HAVE_STRTOL])
+  HAVE_STRTOLD=1;            AC_SUBST([HAVE_STRTOLD])
+  HAVE_STRTOLL=1;            AC_SUBST([HAVE_STRTOLL])
+  HAVE_STRTOUL=1;            AC_SUBST([HAVE_STRTOUL])
+  HAVE_STRTOULL=1;           AC_SUBST([HAVE_STRTOULL])
+  HAVE_STRUCT_RANDOM_DATA=1; AC_SUBST([HAVE_STRUCT_RANDOM_DATA])
+  HAVE_SYS_LOADAVG_H=0;      AC_SUBST([HAVE_SYS_LOADAVG_H])
+  HAVE_UNLOCKPT=1;           AC_SUBST([HAVE_UNLOCKPT])
+  HAVE_DECL_UNSETENV=1;      AC_SUBST([HAVE_DECL_UNSETENV])
+  REPLACE_ALIGNED_ALLOC=0;   AC_SUBST([REPLACE_ALIGNED_ALLOC])
+  REPLACE_CALLOC=0;          AC_SUBST([REPLACE_CALLOC])
+  REPLACE_CANONICALIZE_FILE_NAME=0;  AC_SUBST([REPLACE_CANONICALIZE_FILE_NAME])
+  REPLACE_FREE=0;            AC_SUBST([REPLACE_FREE])
+  REPLACE_INITSTATE=0;       AC_SUBST([REPLACE_INITSTATE])
+  REPLACE_MALLOC=0;          AC_SUBST([REPLACE_MALLOC])
+  REPLACE_MBTOWC=0;          AC_SUBST([REPLACE_MBTOWC])
+  REPLACE_MKSTEMP=0;         AC_SUBST([REPLACE_MKSTEMP])
+  REPLACE_POSIX_MEMALIGN=0;  AC_SUBST([REPLACE_POSIX_MEMALIGN])
+  REPLACE_PTSNAME=0;         AC_SUBST([REPLACE_PTSNAME])
+  REPLACE_PTSNAME_R=0;       AC_SUBST([REPLACE_PTSNAME_R])
+  REPLACE_PUTENV=0;          AC_SUBST([REPLACE_PUTENV])
+  REPLACE_QSORT_R=0;         AC_SUBST([REPLACE_QSORT_R])
+  REPLACE_RANDOM=0;          AC_SUBST([REPLACE_RANDOM])
+  REPLACE_RANDOM_R=0;        AC_SUBST([REPLACE_RANDOM_R])
+  REPLACE_REALLOC=0;         AC_SUBST([REPLACE_REALLOC])
+  REPLACE_REALLOCARRAY=0;    AC_SUBST([REPLACE_REALLOCARRAY])
+  REPLACE_REALPATH=0;        AC_SUBST([REPLACE_REALPATH])
+  REPLACE_SETENV=0;          AC_SUBST([REPLACE_SETENV])
+  REPLACE_SETSTATE=0;        AC_SUBST([REPLACE_SETSTATE])
+  REPLACE_STRTOD=0;          AC_SUBST([REPLACE_STRTOD])
+  REPLACE_STRTOL=0;          AC_SUBST([REPLACE_STRTOL])
+  REPLACE_STRTOLD=0;         AC_SUBST([REPLACE_STRTOLD])
+  REPLACE_STRTOLL=0;         AC_SUBST([REPLACE_STRTOLL])
+  REPLACE_STRTOUL=0;         AC_SUBST([REPLACE_STRTOUL])
+  REPLACE_STRTOULL=0;        AC_SUBST([REPLACE_STRTOULL])
+  REPLACE_UNSETENV=0;        AC_SUBST([REPLACE_UNSETENV])
+  REPLACE_WCTOMB=0;          AC_SUBST([REPLACE_WCTOMB])
+])
diff --git a/src/grep/m4/stpcpy.m4 b/src/grep/m4/stpcpy.m4
new file mode 100644
index 0000000..eb44f03
--- /dev/null
+++ b/src/grep/m4/stpcpy.m4
@@ -0,0 +1,25 @@
+# stpcpy.m4 serial 9
+dnl Copyright (C) 2002, 2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STPCPY],
+[
+  dnl Persuade glibc <string.h> to declare stpcpy().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  dnl The stpcpy() declaration in lib/string.in.h uses 'restrict'.
+  AC_REQUIRE([AC_C_RESTRICT])
+
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+  AC_CHECK_FUNCS([stpcpy])
+  if test $ac_cv_func_stpcpy = no; then
+    HAVE_STPCPY=0
+  fi
+])
+
+# Prerequisites of lib/stpcpy.c.
+AC_DEFUN([gl_PREREQ_STPCPY], [
+  :
+])
diff --git a/src/grep/m4/strdup.m4 b/src/grep/m4/strdup.m4
new file mode 100644
index 0000000..5b6018f
--- /dev/null
+++ b/src/grep/m4/strdup.m4
@@ -0,0 +1,32 @@
+# strdup.m4 serial 15
+
+dnl Copyright (C) 2002-2021 Free Software Foundation, Inc.
+
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRDUP],
+[
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+  AC_CHECK_DECLS_ONCE([strdup])
+  if test $ac_cv_have_decl_strdup = no; then
+    HAVE_DECL_STRDUP=0
+  fi
+])
+
+AC_DEFUN([gl_FUNC_STRDUP_POSIX],
+[
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+  AC_REQUIRE([gl_CHECK_MALLOC_POSIX])
+  if test $gl_cv_func_malloc_posix != yes; then
+    REPLACE_STRDUP=1
+  fi
+  AC_CHECK_DECLS_ONCE([strdup])
+  if test $ac_cv_have_decl_strdup = no; then
+    HAVE_DECL_STRDUP=0
+  fi
+])
+
+# Prerequisites of lib/strdup.c.
+AC_DEFUN([gl_PREREQ_STRDUP], [:])
diff --git a/src/grep/m4/strerror.m4 b/src/grep/m4/strerror.m4
new file mode 100644
index 0000000..438ba92
--- /dev/null
+++ b/src/grep/m4/strerror.m4
@@ -0,0 +1,102 @@
+# strerror.m4 serial 22
+dnl Copyright (C) 2002, 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRERROR],
+[
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+  AC_REQUIRE([gl_HEADER_ERRNO_H])
+  AC_REQUIRE([gl_FUNC_STRERROR_0])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  m4_ifdef([gl_FUNC_STRERROR_R_WORKS], [
+    AC_REQUIRE([gl_FUNC_STRERROR_R_WORKS])
+  ])
+  if test "$ERRNO_H:$REPLACE_STRERROR_0" = :0; then
+    AC_CACHE_CHECK([for working strerror function],
+     [gl_cv_func_working_strerror],
+     [AC_RUN_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[#include <string.h>
+           ]],
+           [[if (!*strerror (-2)) return 1;]])],
+        [gl_cv_func_working_strerror=yes],
+        [gl_cv_func_working_strerror=no],
+        [case "$host_os" in
+                          # Guess yes on glibc systems.
+           *-gnu* | gnu*) gl_cv_func_working_strerror="guessing yes" ;;
+                          # Guess yes on musl systems.
+           *-musl*)       gl_cv_func_working_strerror="guessing yes" ;;
+                          # If we don't know, obey --enable-cross-guesses.
+           *)             gl_cv_func_working_strerror="$gl_cross_guess_normal" ;;
+         esac
+        ])
+    ])
+    case "$gl_cv_func_working_strerror" in
+      *yes) ;;
+      *)
+        dnl The system's strerror() fails to return a string for out-of-range
+        dnl integers. Replace it.
+        REPLACE_STRERROR=1
+        ;;
+    esac
+    m4_ifdef([gl_FUNC_STRERROR_R_WORKS], [
+      dnl If the system's strerror_r or __xpg_strerror_r clobbers strerror's
+      dnl buffer, we must replace strerror.
+      case "$gl_cv_func_strerror_r_works" in
+        *no) REPLACE_STRERROR=1 ;;
+      esac
+    ])
+  else
+    dnl The system's strerror() cannot know about the new errno values we add
+    dnl to <errno.h>, or any fix for strerror(0). Replace it.
+    REPLACE_STRERROR=1
+  fi
+])
+
+dnl Detect if strerror(0) passes (that is, does not set errno, and does not
+dnl return a string that matches strerror(-1)).
+AC_DEFUN([gl_FUNC_STRERROR_0],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  REPLACE_STRERROR_0=0
+  AC_CACHE_CHECK([whether strerror(0) succeeds],
+   [gl_cv_func_strerror_0_works],
+   [AC_RUN_IFELSE(
+      [AC_LANG_PROGRAM(
+         [[#include <string.h>
+           #include <errno.h>
+         ]],
+         [[int result = 0;
+           char *str;
+           errno = 0;
+           str = strerror (0);
+           if (!*str) result |= 1;
+           if (errno) result |= 2;
+           if (strstr (str, "nknown") || strstr (str, "ndefined"))
+             result |= 4;
+           return result;]])],
+      [gl_cv_func_strerror_0_works=yes],
+      [gl_cv_func_strerror_0_works=no],
+      [case "$host_os" in
+                        # Guess yes on glibc systems.
+         *-gnu* | gnu*) gl_cv_func_strerror_0_works="guessing yes" ;;
+                        # Guess yes on musl systems.
+         *-musl*)       gl_cv_func_strerror_0_works="guessing yes" ;;
+                        # Guess yes on native Windows.
+         mingw*)        gl_cv_func_strerror_0_works="guessing yes" ;;
+                        # If we don't know, obey --enable-cross-guesses.
+         *)             gl_cv_func_strerror_0_works="$gl_cross_guess_normal" ;;
+       esac
+      ])
+  ])
+  case "$gl_cv_func_strerror_0_works" in
+    *yes) ;;
+    *)
+      REPLACE_STRERROR_0=1
+      AC_DEFINE([REPLACE_STRERROR_0], [1], [Define to 1 if strerror(0)
+        does not return a message implying success.])
+      ;;
+  esac
+])
diff --git a/src/grep/m4/strerror_r.m4 b/src/grep/m4/strerror_r.m4
new file mode 100644
index 0000000..0689e46
--- /dev/null
+++ b/src/grep/m4/strerror_r.m4
@@ -0,0 +1,173 @@
+# strerror_r.m4 serial 21
+dnl Copyright (C) 2002, 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRERROR_R],
+[
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+  AC_REQUIRE([gl_FUNC_STRERROR_R_WORKS])
+
+  dnl Persuade Solaris <string.h> to declare strerror_r().
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  dnl Some systems don't declare strerror_r() if _THREAD_SAFE and _REENTRANT
+  dnl are not defined.
+  AC_CHECK_DECLS_ONCE([strerror_r])
+  if test $ac_cv_have_decl_strerror_r = no; then
+    HAVE_DECL_STRERROR_R=0
+  fi
+
+  if test $ac_cv_func_strerror_r = yes; then
+    if test "$ERRNO_H:$REPLACE_STRERROR_0" = :0; then
+      if test $gl_cv_func_strerror_r_posix_signature = yes; then
+        case "$gl_cv_func_strerror_r_works" in
+          dnl The system's strerror_r has bugs.  Replace it.
+          *no) REPLACE_STRERROR_R=1 ;;
+        esac
+      else
+        dnl The system's strerror_r() has a wrong signature. Replace it.
+        REPLACE_STRERROR_R=1
+      fi
+    else
+      dnl The system's strerror_r() cannot know about the new errno values we
+      dnl add to <errno.h>, or any fix for strerror(0). Replace it.
+      REPLACE_STRERROR_R=1
+    fi
+  fi
+])
+
+# Prerequisites of lib/strerror_r.c.
+AC_DEFUN([gl_PREREQ_STRERROR_R], [
+  dnl glibc >= 2.3.4 and cygwin 1.7.9 have a function __xpg_strerror_r.
+  AC_CHECK_FUNCS_ONCE([__xpg_strerror_r])
+  AC_CHECK_FUNCS_ONCE([catgets])
+  AC_CHECK_FUNCS_ONCE([snprintf])
+])
+
+# Detect if strerror_r works, but without affecting whether a replacement
+# strerror_r will be used.
+AC_DEFUN([gl_FUNC_STRERROR_R_WORKS],
+[
+  AC_REQUIRE([gl_HEADER_ERRNO_H])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_REQUIRE([gl_FUNC_STRERROR_0])
+
+  AC_CHECK_FUNCS_ONCE([strerror_r])
+  if test $ac_cv_func_strerror_r = yes; then
+    if test "$ERRNO_H:$REPLACE_STRERROR_0" = :0; then
+      dnl The POSIX prototype is:  int strerror_r (int, char *, size_t);
+      dnl glibc, Cygwin:           char *strerror_r (int, char *, size_t);
+      dnl AIX 5.1, OSF/1 5.1:      int strerror_r (int, char *, int);
+      AC_CACHE_CHECK([for strerror_r with POSIX signature],
+        [gl_cv_func_strerror_r_posix_signature],
+        [AC_COMPILE_IFELSE(
+           [AC_LANG_PROGRAM(
+              [[#include <string.h>
+                int strerror_r (int, char *, size_t);
+              ]],
+              [])],
+           [gl_cv_func_strerror_r_posix_signature=yes],
+           [gl_cv_func_strerror_r_posix_signature=no])
+        ])
+      if test $gl_cv_func_strerror_r_posix_signature = yes; then
+        dnl AIX 6.1 strerror_r fails by returning -1, not an error number.
+        dnl HP-UX 11.31 strerror_r always fails when the buffer length argument
+        dnl is less than 80.
+        dnl FreeBSD 8.s strerror_r claims failure on 0
+        dnl Mac OS X 10.5 strerror_r treats 0 like -1
+        dnl Solaris 10 strerror_r corrupts errno on failure
+        AC_CACHE_CHECK([whether strerror_r works],
+          [gl_cv_func_strerror_r_works],
+          [AC_RUN_IFELSE(
+             [AC_LANG_PROGRAM(
+                [[#include <errno.h>
+                  #include <string.h>
+                ]],
+                [[int result = 0;
+                  char buf[79];
+                  if (strerror_r (EACCES, buf, 0) < 0)
+                    result |= 1;
+                  errno = 0;
+                  if (strerror_r (EACCES, buf, sizeof buf) != 0)
+                    result |= 2;
+                  strcpy (buf, "Unknown");
+                  if (strerror_r (0, buf, sizeof buf) != 0)
+                    result |= 4;
+                  if (errno)
+                    result |= 8;
+                  if (strstr (buf, "nknown") || strstr (buf, "ndefined"))
+                    result |= 0x10;
+                  errno = 0;
+                  *buf = 0;
+                  if (strerror_r (-3, buf, sizeof buf) < 0)
+                    result |= 0x20;
+                  if (errno)
+                    result |= 0x40;
+                  if (!*buf)
+                    result |= 0x80;
+                  return result;
+                ]])],
+             [gl_cv_func_strerror_r_works=yes],
+             [gl_cv_func_strerror_r_works=no],
+             [
+changequote(,)dnl
+              case "$host_os" in
+                       # Guess no on AIX.
+                aix*)  gl_cv_func_strerror_r_works="guessing no";;
+                       # Guess no on HP-UX.
+                hpux*) gl_cv_func_strerror_r_works="guessing no";;
+                       # Guess no on BSD variants.
+                *bsd*)  gl_cv_func_strerror_r_works="guessing no";;
+                       # Guess yes otherwise.
+                *)     gl_cv_func_strerror_r_works="guessing yes";;
+              esac
+changequote([,])dnl
+             ])
+          ])
+      else
+        dnl The system's strerror() has a wrong signature.
+        dnl glibc >= 2.3.4 and cygwin 1.7.9 have a function __xpg_strerror_r.
+        AC_CHECK_FUNCS_ONCE([__xpg_strerror_r])
+        dnl In glibc < 2.14, __xpg_strerror_r does not populate buf on failure.
+        dnl In cygwin < 1.7.10, __xpg_strerror_r clobbers strerror's buffer.
+        if test $ac_cv_func___xpg_strerror_r = yes; then
+          AC_CACHE_CHECK([whether __xpg_strerror_r works],
+            [gl_cv_func_strerror_r_works],
+            [AC_RUN_IFELSE(
+               [AC_LANG_PROGRAM(
+                  [[#include <errno.h>
+                    #include <string.h>
+                    extern
+                    #ifdef __cplusplus
+                    "C"
+                    #endif
+                    int __xpg_strerror_r(int, char *, size_t);
+                  ]],
+                  [[int result = 0;
+                    char buf[256] = "^";
+                    char copy[256];
+                    char *str = strerror (-1);
+                    strcpy (copy, str);
+                    if (__xpg_strerror_r (-2, buf, 1) == 0)
+                      result |= 1;
+                    if (*buf)
+                      result |= 2;
+                    __xpg_strerror_r (-2, buf, 256);
+                    if (strcmp (str, copy))
+                      result |= 4;
+                    return result;
+                  ]])],
+               [gl_cv_func_strerror_r_works=yes],
+               [gl_cv_func_strerror_r_works=no],
+               [dnl Guess no on all platforms that have __xpg_strerror_r,
+                dnl at least until fixed glibc and cygwin are more common.
+                gl_cv_func_strerror_r_works="$gl_cross_guess_normal"
+               ])
+            ])
+        fi
+      fi
+    fi
+  fi
+])
diff --git a/src/grep/m4/string_h.m4 b/src/grep/m4/string_h.m4
new file mode 100644
index 0000000..80d1e58
--- /dev/null
+++ b/src/grep/m4/string_h.m4
@@ -0,0 +1,143 @@
+# Configure a GNU-like replacement for <string.h>.
+
+# Copyright (C) 2007-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 32
+
+# Written by Paul Eggert.
+
+AC_DEFUN_ONCE([gl_STRING_H],
+[
+  dnl Ensure to expand the default settings once only, before all statements
+  dnl that occur in other macros.
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+  gl_NEXT_HEADERS([string.h])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use, and which is not
+  dnl guaranteed by C89.
+  gl_WARN_ON_USE_PREPARE([[#include <string.h>
+    ]],
+    [ffsl ffsll memmem mempcpy memrchr rawmemchr stpcpy stpncpy strchrnul
+     strdup strncat strndup strnlen strpbrk strsep strcasestr strtok_r
+     strerror_r strerrorname_np sigabbrev_np sigdescr_np strsignal strverscmp])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+])
+
+# gl_STRING_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_STRING_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_STRING_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_STRING_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_STRING_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXPLICIT_BZERO])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FFSL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FFSLL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMCHR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMMEM])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMPCPY])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMRCHR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RAWMEMCHR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STPCPY])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STPNCPY])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRCHRNUL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRDUP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRNCAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRNDUP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRNLEN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRPBRK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRSEP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRSTR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRCASESTR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOK_R])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSLEN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSNLEN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSCHR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSRCHR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSSTR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSCASECMP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSNCASECMP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSPCASECMP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSCASESTR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSCSPN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSPBRK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSSPN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSSEP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSTOK_R])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRERROR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRERROR_R])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRERRORNAME_NP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGABBREV_NP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGDESCR_NP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRSIGNAL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRVERSCMP])
+    dnl Support Microsoft deprecated alias function names by default.
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_MEMCCPY], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_STRDUP], [1])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_STRING_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_STRING_H_DEFAULTS],
+[
+  HAVE_MBSLEN=0;             AC_SUBST([HAVE_MBSLEN])
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_EXPLICIT_BZERO=1;        AC_SUBST([HAVE_EXPLICIT_BZERO])
+  HAVE_FFSL=1;                  AC_SUBST([HAVE_FFSL])
+  HAVE_FFSLL=1;                 AC_SUBST([HAVE_FFSLL])
+  HAVE_DECL_MEMMEM=1;           AC_SUBST([HAVE_DECL_MEMMEM])
+  HAVE_MEMPCPY=1;               AC_SUBST([HAVE_MEMPCPY])
+  HAVE_DECL_MEMRCHR=1;          AC_SUBST([HAVE_DECL_MEMRCHR])
+  HAVE_RAWMEMCHR=1;             AC_SUBST([HAVE_RAWMEMCHR])
+  HAVE_STPCPY=1;                AC_SUBST([HAVE_STPCPY])
+  HAVE_STPNCPY=1;               AC_SUBST([HAVE_STPNCPY])
+  HAVE_STRCHRNUL=1;             AC_SUBST([HAVE_STRCHRNUL])
+  HAVE_DECL_STRDUP=1;           AC_SUBST([HAVE_DECL_STRDUP])
+  HAVE_DECL_STRNDUP=1;          AC_SUBST([HAVE_DECL_STRNDUP])
+  HAVE_DECL_STRNLEN=1;          AC_SUBST([HAVE_DECL_STRNLEN])
+  HAVE_STRPBRK=1;               AC_SUBST([HAVE_STRPBRK])
+  HAVE_STRSEP=1;                AC_SUBST([HAVE_STRSEP])
+  HAVE_STRCASESTR=1;            AC_SUBST([HAVE_STRCASESTR])
+  HAVE_DECL_STRTOK_R=1;         AC_SUBST([HAVE_DECL_STRTOK_R])
+  HAVE_DECL_STRERROR_R=1;       AC_SUBST([HAVE_DECL_STRERROR_R])
+  HAVE_STRERRORNAME_NP=1;       AC_SUBST([HAVE_STRERRORNAME_NP])
+  HAVE_SIGABBREV_NP=1;          AC_SUBST([HAVE_SIGABBREV_NP])
+  HAVE_SIGDESCR_NP=1;           AC_SUBST([HAVE_SIGDESCR_NP])
+  HAVE_DECL_STRSIGNAL=1;        AC_SUBST([HAVE_DECL_STRSIGNAL])
+  HAVE_STRVERSCMP=1;            AC_SUBST([HAVE_STRVERSCMP])
+  REPLACE_FFSLL=0;              AC_SUBST([REPLACE_FFSLL])
+  REPLACE_MEMCHR=0;             AC_SUBST([REPLACE_MEMCHR])
+  REPLACE_MEMMEM=0;             AC_SUBST([REPLACE_MEMMEM])
+  REPLACE_STPNCPY=0;            AC_SUBST([REPLACE_STPNCPY])
+  REPLACE_STRCHRNUL=0;          AC_SUBST([REPLACE_STRCHRNUL])
+  REPLACE_STRDUP=0;             AC_SUBST([REPLACE_STRDUP])
+  REPLACE_STRNCAT=0;            AC_SUBST([REPLACE_STRNCAT])
+  REPLACE_STRNDUP=0;            AC_SUBST([REPLACE_STRNDUP])
+  REPLACE_STRNLEN=0;            AC_SUBST([REPLACE_STRNLEN])
+  REPLACE_STRSTR=0;             AC_SUBST([REPLACE_STRSTR])
+  REPLACE_STRCASESTR=0;         AC_SUBST([REPLACE_STRCASESTR])
+  REPLACE_STRTOK_R=0;           AC_SUBST([REPLACE_STRTOK_R])
+  REPLACE_STRERROR=0;           AC_SUBST([REPLACE_STRERROR])
+  REPLACE_STRERROR_R=0;         AC_SUBST([REPLACE_STRERROR_R])
+  REPLACE_STRERRORNAME_NP=0;    AC_SUBST([REPLACE_STRERRORNAME_NP])
+  REPLACE_STRSIGNAL=0;          AC_SUBST([REPLACE_STRSIGNAL])
+  UNDEFINE_STRTOK_R=0;          AC_SUBST([UNDEFINE_STRTOK_R])
+])
diff --git a/src/grep/m4/strnlen.m4 b/src/grep/m4/strnlen.m4
new file mode 100644
index 0000000..1d4f106
--- /dev/null
+++ b/src/grep/m4/strnlen.m4
@@ -0,0 +1,30 @@
+# strnlen.m4 serial 14
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2021 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRNLEN],
+[
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+
+  dnl Persuade glibc <string.h> to declare strnlen().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_CHECK_DECLS_ONCE([strnlen])
+  if test $ac_cv_have_decl_strnlen = no; then
+    HAVE_DECL_STRNLEN=0
+  else
+    m4_pushdef([AC_LIBOBJ], [:])
+    dnl Note: AC_FUNC_STRNLEN does AC_LIBOBJ([strnlen]).
+    AC_FUNC_STRNLEN
+    m4_popdef([AC_LIBOBJ])
+    if test $ac_cv_func_strnlen_working = no; then
+      REPLACE_STRNLEN=1
+    fi
+  fi
+])
+
+# Prerequisites of lib/strnlen.c.
+AC_DEFUN([gl_PREREQ_STRNLEN], [:])
diff --git a/src/grep/m4/strstr.m4 b/src/grep/m4/strstr.m4
new file mode 100644
index 0000000..a32e9c1
--- /dev/null
+++ b/src/grep/m4/strstr.m4
@@ -0,0 +1,149 @@
+# strstr.m4 serial 24
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Check that strstr works.
+AC_DEFUN([gl_FUNC_STRSTR_SIMPLE],
+[
+  AC_REQUIRE([gl_STRING_H_DEFAULTS])
+  AC_REQUIRE([gl_FUNC_MEMCHR])
+  if test $REPLACE_MEMCHR = 1; then
+    REPLACE_STRSTR=1
+  else
+    dnl Detect https://sourceware.org/bugzilla/show_bug.cgi?id=12092
+    dnl and https://sourceware.org/bugzilla/show_bug.cgi?id=23637.
+    AC_CACHE_CHECK([whether strstr works],
+      [gl_cv_func_strstr_works_always],
+      [AC_RUN_IFELSE(
+         [AC_LANG_PROGRAM([[
+#include <string.h> /* for __GNU_LIBRARY__, strstr */
+#ifdef __GNU_LIBRARY__
+ #include <features.h>
+ #if __GLIBC__ == 2 && __GLIBC_MINOR__ == 28
+  Unlucky user
+ #endif
+#endif
+#define P "_EF_BF_BD"
+#define HAYSTACK "F_BD_CE_BD" P P P P "_C3_88_20" P P P "_C3_A7_20" P
+#define NEEDLE P P P P P
+]],
+            [[return !!strstr (HAYSTACK, NEEDLE);
+            ]])],
+         [gl_cv_func_strstr_works_always=yes],
+         [gl_cv_func_strstr_works_always=no],
+         [dnl glibc 2.12 and cygwin 1.7.7 have a known bug.  uClibc is not
+          dnl affected, since it uses different source code for strstr than
+          dnl glibc.
+          dnl Assume that it works on all other platforms, even if it is not
+          dnl linear.
+          AC_EGREP_CPP([Lucky user],
+            [
+#include <string.h> /* for __GNU_LIBRARY__ */
+#ifdef __GNU_LIBRARY__
+ #include <features.h>
+ #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ > 12) || (__GLIBC__ > 2)) \
+     || defined __UCLIBC__
+  Lucky user
+ #endif
+#elif defined __CYGWIN__
+ #include <cygwin/version.h>
+ #if CYGWIN_VERSION_DLL_COMBINED > CYGWIN_VERSION_DLL_MAKE_COMBINED (1007, 7)
+  Lucky user
+ #endif
+#else
+  Lucky user
+#endif
+            ],
+            [gl_cv_func_strstr_works_always="guessing yes"],
+            [gl_cv_func_strstr_works_always="$gl_cross_guess_normal"])
+         ])
+      ])
+    case "$gl_cv_func_strstr_works_always" in
+      *yes) ;;
+      *)
+        REPLACE_STRSTR=1
+        ;;
+    esac
+  fi
+]) # gl_FUNC_STRSTR_SIMPLE
+
+dnl Additionally, check that strstr is efficient.
+AC_DEFUN([gl_FUNC_STRSTR],
+[
+  AC_REQUIRE([gl_FUNC_STRSTR_SIMPLE])
+  if test $REPLACE_STRSTR = 0; then
+    AC_CACHE_CHECK([whether strstr works in linear time],
+      [gl_cv_func_strstr_linear],
+      [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+#ifdef __MVS__
+/* z/OS does not deliver signals while strstr() is running (thanks to
+   restrictions on its LE runtime), which prevents us from limiting the
+   running time of this test.  */
+# error "This test does not work properly on z/OS"
+#endif
+#include <signal.h> /* for signal */
+#include <string.h> /* for strstr */
+#include <stdlib.h> /* for malloc */
+#include <unistd.h> /* for alarm */
+static void quit (int sig) { _exit (sig + 128); }
+]], [[
+    int result = 0;
+    size_t m = 1000000;
+    char *haystack = (char *) malloc (2 * m + 2);
+    char *needle = (char *) malloc (m + 2);
+    /* Failure to compile this test due to missing alarm is okay,
+       since all such platforms (mingw) also have quadratic strstr.  */
+    signal (SIGALRM, quit);
+    alarm (5);
+    /* Check for quadratic performance.  */
+    if (haystack && needle)
+      {
+        memset (haystack, 'A', 2 * m);
+        haystack[2 * m] = 'B';
+        haystack[2 * m + 1] = 0;
+        memset (needle, 'A', m);
+        needle[m] = 'B';
+        needle[m + 1] = 0;
+        if (!strstr (haystack, needle))
+          result |= 1;
+      }
+    /* Free allocated memory, in case some sanitizer is watching.  */
+    free (haystack);
+    free (needle);
+    return result;
+    ]])],
+        [gl_cv_func_strstr_linear=yes], [gl_cv_func_strstr_linear=no],
+        [dnl Only glibc > 2.12 on processors without SSE 4.2 instructions and
+         dnl cygwin > 1.7.7 are known to have a bug-free strstr that works in
+         dnl linear time.
+         AC_EGREP_CPP([Lucky user],
+           [
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ > 12) || (__GLIBC__ > 2)) \
+     && !(defined __i386__ || defined __x86_64__) \
+     && !defined __UCLIBC__
+  Lucky user
+ #endif
+#endif
+#ifdef __CYGWIN__
+ #include <cygwin/version.h>
+ #if CYGWIN_VERSION_DLL_COMBINED > CYGWIN_VERSION_DLL_MAKE_COMBINED (1007, 7)
+  Lucky user
+ #endif
+#endif
+           ],
+           [gl_cv_func_strstr_linear="guessing yes"],
+           [gl_cv_func_strstr_linear="$gl_cross_guess_normal"])
+        ])
+      ])
+    case "$gl_cv_func_strstr_linear" in
+      *yes) ;;
+      *)
+        REPLACE_STRSTR=1
+        ;;
+    esac
+  fi
+]) # gl_FUNC_STRSTR
diff --git a/src/grep/m4/strtoimax.m4 b/src/grep/m4/strtoimax.m4
new file mode 100644
index 0000000..d767d57
--- /dev/null
+++ b/src/grep/m4/strtoimax.m4
@@ -0,0 +1,88 @@
+# strtoimax.m4 serial 16
+dnl Copyright (C) 2002-2004, 2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRTOIMAX],
+[
+  AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])
+
+  dnl On OSF/1 5.1 with cc, this function is declared but not defined.
+  AC_CHECK_FUNCS_ONCE([strtoimax])
+  AC_CHECK_DECLS_ONCE([strtoimax])
+  if test "$ac_cv_have_decl_strtoimax" != yes; then
+    HAVE_DECL_STRTOIMAX=0
+  fi
+
+  if test "$ac_cv_func_strtoimax" = yes; then
+    HAVE_STRTOIMAX=1
+    dnl On AIX 5.1, strtoimax() fails for values outside the 'int' range.
+    AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+    AC_CACHE_CHECK([whether strtoimax works], [gl_cv_func_strtoimax],
+      [AC_RUN_IFELSE(
+         [AC_LANG_SOURCE([[
+#include <errno.h>
+#include <string.h>
+#include <inttypes.h>
+int main ()
+{
+  if (sizeof (intmax_t) > sizeof (int))
+    {
+      const char *s = "4294967295";
+      char *p;
+      intmax_t res;
+      errno = 0;
+      res = strtoimax (s, &p, 10);
+      if (p != s + strlen (s))
+        return 1;
+      if (errno != 0)
+        return 2;
+      if (res != (intmax_t) 65535 * (intmax_t) 65537)
+        return 3;
+    }
+  else
+    {
+      const char *s = "2147483647";
+      char *p;
+      intmax_t res;
+      errno = 0;
+      res = strtoimax (s, &p, 10);
+      if (p != s + strlen (s))
+        return 1;
+      if (errno != 0)
+        return 2;
+      if (res != 2147483647)
+        return 3;
+    }
+  return 0;
+}
+]])],
+         [gl_cv_func_strtoimax=yes],
+         [gl_cv_func_strtoimax=no],
+         [case "$host_os" in
+                    # Guess no on AIX 5.
+            aix5*)  gl_cv_func_strtoimax="guessing no" ;;
+                    # Guess yes on native Windows.
+            mingw*) gl_cv_func_strtoimax="guessing yes" ;;
+                    # Guess yes otherwise.
+            *)      gl_cv_func_strtoimax="guessing yes" ;;
+          esac
+         ])
+      ])
+    case "$gl_cv_func_strtoimax" in
+      *no) REPLACE_STRTOIMAX=1 ;;
+    esac
+  else
+    if test "$ac_cv_have_decl_strtoimax" = yes; then
+      # HP-UX 11.11 has "#define strtoimax(...) ..." but no function.
+      REPLACE_STRTOIMAX=1
+    fi
+    HAVE_STRTOIMAX=0
+  fi
+])
+
+# Prerequisites of lib/strtoimax.c.
+AC_DEFUN([gl_PREREQ_STRTOIMAX], [
+  AC_CHECK_DECLS([strtoll])
+])
diff --git a/src/grep/m4/strtoll.m4 b/src/grep/m4/strtoll.m4
new file mode 100644
index 0000000..14455dc
--- /dev/null
+++ b/src/grep/m4/strtoll.m4
@@ -0,0 +1,51 @@
+# strtoll.m4 serial 9
+dnl Copyright (C) 2002, 2004, 2006, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRTOLL],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CHECK_FUNCS([strtoll])
+  if test $ac_cv_func_strtoll = yes; then
+    AC_CACHE_CHECK([whether strtoll works],
+      [gl_cv_func_strtoll_works],
+      [AC_RUN_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <stdlib.h>]],
+            [[int result = 0;
+              char *term;
+              /* This test fails on Minix and native Windows.  */
+              {
+                const char input[] = "0x";
+                (void) strtoll (input, &term, 16);
+                if (term != input + 1)
+                  result |= 1;
+              }
+              return result;
+            ]])
+         ],
+         [gl_cv_func_strtoll_works=yes],
+         [gl_cv_func_strtoll_works=no],
+         [case "$host_os" in
+                    # Guess no on native Windows.
+            mingw*) gl_cv_func_strtoll_works="guessing no" ;;
+            *)      gl_cv_func_strtoll_works="$gl_cross_guess_normal" ;;
+          esac
+         ])
+    ])
+    case "$gl_cv_func_strtoll_works" in
+      *yes) ;;
+      *)    REPLACE_STRTOLL=1 ;;
+    esac
+  else
+    HAVE_STRTOLL=0
+  fi
+])
+
+# Prerequisites of lib/strtoll.c.
+AC_DEFUN([gl_PREREQ_STRTOLL], [
+  :
+])
diff --git a/src/grep/m4/strtoull.m4 b/src/grep/m4/strtoull.m4
new file mode 100644
index 0000000..41178cc
--- /dev/null
+++ b/src/grep/m4/strtoull.m4
@@ -0,0 +1,51 @@
+# strtoull.m4 serial 9
+dnl Copyright (C) 2002, 2004, 2006, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRTOULL],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CHECK_FUNCS([strtoull])
+  if test $ac_cv_func_strtoull = yes; then
+    AC_CACHE_CHECK([whether strtoull works],
+      [gl_cv_func_strtoull_works],
+      [AC_RUN_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <stdlib.h>]],
+            [[int result = 0;
+              char *term;
+              /* This test fails on Minix and native Windows.  */
+              {
+                const char input[] = "0x";
+                (void) strtoull (input, &term, 16);
+                if (term != input + 1)
+                  result |= 1;
+              }
+              return result;
+            ]])
+         ],
+         [gl_cv_func_strtoull_works=yes],
+         [gl_cv_func_strtoull_works=no],
+         [case "$host_os" in
+                    # Guess no on native Windows.
+            mingw*) gl_cv_func_strtoull_works="guessing no" ;;
+            *)      gl_cv_func_strtoull_works="$gl_cross_guess_normal" ;;
+          esac
+         ])
+    ])
+    case "$gl_cv_func_strtoull_works" in
+      *yes) ;;
+      *)    REPLACE_STRTOULL=1 ;;
+    esac
+  else
+    HAVE_STRTOULL=0
+  fi
+])
+
+# Prerequisites of lib/strtoull.c.
+AC_DEFUN([gl_PREREQ_STRTOULL], [
+  :
+])
diff --git a/src/grep/m4/strtoumax.m4 b/src/grep/m4/strtoumax.m4
new file mode 100644
index 0000000..b896bf9
--- /dev/null
+++ b/src/grep/m4/strtoumax.m4
@@ -0,0 +1,27 @@
+# strtoumax.m4 serial 13
+dnl Copyright (C) 2002-2004, 2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRTOUMAX],
+[
+  AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])
+
+  dnl On OSF/1 5.1 with cc, this function is declared but not defined.
+  AC_CHECK_FUNCS_ONCE([strtoumax])
+  AC_CHECK_DECLS_ONCE([strtoumax])
+  if test "$ac_cv_have_decl_strtoumax" = yes; then
+    if test "$ac_cv_func_strtoumax" != yes; then
+      # HP-UX 11.11 has "#define strtoimax(...) ..." but no function.
+      REPLACE_STRTOUMAX=1
+    fi
+  else
+    HAVE_DECL_STRTOUMAX=0
+  fi
+])
+
+# Prerequisites of lib/strtoumax.c.
+AC_DEFUN([gl_PREREQ_STRTOUMAX], [
+  AC_CHECK_DECLS([strtoull])
+])
diff --git a/src/grep/m4/symlink.m4 b/src/grep/m4/symlink.m4
new file mode 100644
index 0000000..209dece
--- /dev/null
+++ b/src/grep/m4/symlink.m4
@@ -0,0 +1,55 @@
+# serial 9
+# See if we need to provide symlink replacement.
+
+dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Written by Eric Blake.
+
+AC_DEFUN([gl_FUNC_SYMLINK],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CHECK_FUNCS_ONCE([symlink])
+  dnl The best we can do on mingw is provide a dummy that always fails, so
+  dnl that compilation can proceed with fewer ifdefs.  On FreeBSD 7.2, AIX 7.1,
+  dnl and Solaris 9, we want to fix a bug with trailing slash handling.
+  if test $ac_cv_func_symlink = no; then
+    HAVE_SYMLINK=0
+  else
+    AC_CACHE_CHECK([whether symlink handles trailing slash correctly],
+      [gl_cv_func_symlink_works],
+      [AC_RUN_IFELSE(
+         [AC_LANG_PROGRAM(
+           [[#include <unistd.h>
+           ]],
+           [[int result = 0;
+             if (!symlink ("a", "conftest.link/"))
+               result |= 1;
+             if (symlink ("conftest.f", "conftest.lnk2"))
+               result |= 2;
+             else if (!symlink ("a", "conftest.lnk2/"))
+               result |= 4;
+             return result;
+           ]])],
+         [gl_cv_func_symlink_works=yes], [gl_cv_func_symlink_works=no],
+         [case "$host_os" in
+                             # Guess yes on Linux systems.
+            linux-* | linux) gl_cv_func_symlink_works="guessing yes" ;;
+                             # Guess yes on glibc systems.
+            *-gnu* | gnu*)   gl_cv_func_symlink_works="guessing yes" ;;
+                             # If we don't know, obey --enable-cross-guesses.
+            *)               gl_cv_func_symlink_works="$gl_cross_guess_normal" ;;
+          esac
+         ])
+      rm -f conftest.f conftest.link conftest.lnk2])
+    case "$gl_cv_func_symlink_works" in
+      *yes) ;;
+      *)
+        REPLACE_SYMLINK=1
+        ;;
+    esac
+  fi
+])
diff --git a/src/grep/m4/sys_ioctl_h.m4 b/src/grep/m4/sys_ioctl_h.m4
new file mode 100644
index 0000000..cd00410
--- /dev/null
+++ b/src/grep/m4/sys_ioctl_h.m4
@@ -0,0 +1,79 @@
+# sys_ioctl_h.m4 serial 15
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Bruno Haible.
+
+AC_DEFUN_ONCE([gl_SYS_IOCTL_H],
+[
+  dnl Ensure to expand the default settings once only, before all statements
+  dnl that occur in other macros.
+  AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])
+
+  AC_CHECK_HEADERS_ONCE([sys/ioctl.h])
+  if test $ac_cv_header_sys_ioctl_h = yes; then
+    HAVE_SYS_IOCTL_H=1
+    dnl Test whether <sys/ioctl.h> declares ioctl(), or whether some other
+    dnl header file, such as <unistd.h> or <stropts.h>, is needed for that.
+    AC_CACHE_CHECK([whether <sys/ioctl.h> declares ioctl],
+      [gl_cv_decl_ioctl_in_sys_ioctl_h],
+      [dnl We cannot use AC_CHECK_DECL because it produces its own messages.
+       AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <sys/ioctl.h>]],
+            [[(void) ioctl;]])],
+         [gl_cv_decl_ioctl_in_sys_ioctl_h=yes],
+         [gl_cv_decl_ioctl_in_sys_ioctl_h=no])
+      ])
+  else
+    HAVE_SYS_IOCTL_H=0
+  fi
+  AC_SUBST([HAVE_SYS_IOCTL_H])
+  dnl <sys/ioctl.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_CHECK_NEXT_HEADERS([sys/ioctl.h])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <sys/ioctl.h>
+/* Some platforms declare ioctl in the wrong header.  */
+#if !(defined __GLIBC__ && !defined __UCLIBC__)
+# include <unistd.h>
+#endif
+    ]], [ioctl])
+])
+
+# gl_SYS_IOCTL_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_SYS_IOCTL_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_SYS_IOCTL_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_SYS_IOCTL_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_IOCTL_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_IOCTL])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_IOCTL_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_SYS_IOCTL_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  SYS_IOCTL_H_HAVE_WINSOCK2_H=0; AC_SUBST([SYS_IOCTL_H_HAVE_WINSOCK2_H])
+  SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
+                        AC_SUBST([SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS])
+  REPLACE_IOCTL=0;      AC_SUBST([REPLACE_IOCTL])
+])
diff --git a/src/grep/m4/sys_select_h.m4 b/src/grep/m4/sys_select_h.m4
new file mode 100644
index 0000000..2e7d140
--- /dev/null
+++ b/src/grep/m4/sys_select_h.m4
@@ -0,0 +1,110 @@
+# sys_select_h.m4 serial 23
+dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_SYS_SELECT_H],
+[
+  AC_REQUIRE([gl_SYS_SELECT_H_DEFAULTS])
+  AC_REQUIRE([AC_C_RESTRICT])
+  AC_CACHE_CHECK([whether <sys/select.h> is self-contained],
+    [gl_cv_header_sys_select_h_selfcontained],
+    [
+      dnl Test against two bugs:
+      dnl 1. On many platforms, <sys/select.h> assumes prior inclusion of
+      dnl    <sys/types.h>.
+      dnl 2. On OSF/1 4.0, <sys/select.h> provides only a forward declaration
+      dnl    of 'struct timeval', and no definition of this type.
+      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/select.h>]],
+                                         [[struct timeval b;]])],
+        [gl_cv_header_sys_select_h_selfcontained=yes],
+        [gl_cv_header_sys_select_h_selfcontained=no])
+      dnl Test against another bug:
+      dnl 3. On Solaris 10, <sys/select.h> provides an FD_ZERO implementation
+      dnl    that relies on memset(), but without including <string.h>.
+      if test $gl_cv_header_sys_select_h_selfcontained = yes; then
+        AC_COMPILE_IFELSE(
+          [AC_LANG_PROGRAM([[#include <sys/select.h>]],
+                           [[int memset; int bzero;]])
+          ],
+          [AC_LINK_IFELSE(
+             [AC_LANG_PROGRAM([[#include <sys/select.h>]], [[
+                  #undef memset
+                  #define memset nonexistent_memset
+                  extern
+                  #ifdef __cplusplus
+                  "C"
+                  #endif
+                  void *memset (void *, int, unsigned long);
+                  #undef bzero
+                  #define bzero nonexistent_bzero
+                  extern
+                  #ifdef __cplusplus
+                  "C"
+                  #endif
+                  void bzero (void *, unsigned long);
+                  fd_set fds;
+                  FD_ZERO (&fds);
+                ]])
+             ],
+             [],
+             [gl_cv_header_sys_select_h_selfcontained=no])
+          ])
+      fi
+    ])
+  dnl <sys/select.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_CHECK_NEXT_HEADERS([sys/select.h])
+  if test $ac_cv_header_sys_select_h = yes; then
+    HAVE_SYS_SELECT_H=1
+  else
+    HAVE_SYS_SELECT_H=0
+  fi
+  AC_SUBST([HAVE_SYS_SELECT_H])
+  gl_PREREQ_SYS_H_WINSOCK2
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[
+/* Some systems require prerequisite headers.  */
+#include <sys/types.h>
+#if !(defined __GLIBC__ && !defined __UCLIBC__) && HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
+#include <sys/select.h>
+    ]], [pselect select])
+])
+
+# gl_SYS_SELECT_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_SYS_SELECT_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_SYS_SELECT_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_SYS_SELECT_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_SELECT_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PSELECT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SELECT])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_SELECT_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_SYS_SELECT_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_SYS_SELECT_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_PSELECT=1; AC_SUBST([HAVE_PSELECT])
+  REPLACE_PSELECT=0; AC_SUBST([REPLACE_PSELECT])
+  REPLACE_SELECT=0; AC_SUBST([REPLACE_SELECT])
+])
diff --git a/src/grep/m4/sys_socket_h.m4 b/src/grep/m4/sys_socket_h.m4
new file mode 100644
index 0000000..5676a0d
--- /dev/null
+++ b/src/grep/m4/sys_socket_h.m4
@@ -0,0 +1,205 @@
+# sys_socket_h.m4 serial 28
+dnl Copyright (C) 2005-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Simon Josefsson.
+
+AC_DEFUN_ONCE([gl_SYS_SOCKET_H],
+[
+  AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  dnl On OSF/1, the functions recv(), send(), recvfrom(), sendto() have
+  dnl old-style declarations (with return type 'int' instead of 'ssize_t')
+  dnl unless _POSIX_PII_SOCKET is defined.
+  case "$host_os" in
+    osf*)
+      AC_DEFINE([_POSIX_PII_SOCKET], [1],
+        [Define to 1 in order to get the POSIX compatible declarations
+         of socket functions.])
+      ;;
+  esac
+
+  AC_CACHE_CHECK([whether <sys/socket.h> is self-contained],
+    [gl_cv_header_sys_socket_h_selfcontained],
+    [
+      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]], [[]])],
+        [gl_cv_header_sys_socket_h_selfcontained=yes],
+        [gl_cv_header_sys_socket_h_selfcontained=no])
+    ])
+  if test $gl_cv_header_sys_socket_h_selfcontained = yes; then
+    dnl If the shutdown function exists, <sys/socket.h> should define
+    dnl SHUT_RD, SHUT_WR, SHUT_RDWR.
+    AC_CHECK_FUNCS([shutdown])
+    if test $ac_cv_func_shutdown = yes; then
+      AC_CACHE_CHECK([whether <sys/socket.h> defines the SHUT_* macros],
+        [gl_cv_header_sys_socket_h_shut],
+        [
+          AC_COMPILE_IFELSE(
+            [AC_LANG_PROGRAM([[#include <sys/socket.h>]],
+               [[int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };]])],
+            [gl_cv_header_sys_socket_h_shut=yes],
+            [gl_cv_header_sys_socket_h_shut=no])
+        ])
+      if test $gl_cv_header_sys_socket_h_shut = no; then
+        SYS_SOCKET_H='sys/socket.h'
+      fi
+    fi
+  fi
+  # We need to check for ws2tcpip.h now.
+  gl_PREREQ_SYS_H_SOCKET
+  AC_CHECK_TYPES([struct sockaddr_storage, sa_family_t],,,[
+  /* sys/types.h is not needed according to POSIX, but the
+     sys/socket.h in i386-unknown-freebsd4.10 and
+     powerpc-apple-darwin5.5 required it. */
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+])
+  if test $ac_cv_type_struct_sockaddr_storage = no; then
+    HAVE_STRUCT_SOCKADDR_STORAGE=0
+  fi
+  if test $ac_cv_type_sa_family_t = no; then
+    HAVE_SA_FAMILY_T=0
+  fi
+  if test $ac_cv_type_struct_sockaddr_storage != no; then
+    AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family],
+      [],
+      [HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=0],
+      [#include <sys/types.h>
+       #ifdef HAVE_SYS_SOCKET_H
+       #include <sys/socket.h>
+       #endif
+       #ifdef HAVE_WS2TCPIP_H
+       #include <ws2tcpip.h>
+       #endif
+      ])
+  fi
+  if test $HAVE_STRUCT_SOCKADDR_STORAGE = 0 || test $HAVE_SA_FAMILY_T = 0 \
+     || test $HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = 0; then
+    SYS_SOCKET_H='sys/socket.h'
+  fi
+  gl_PREREQ_SYS_H_WINSOCK2
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[
+/* Some systems require prerequisite headers.  */
+#include <sys/types.h>
+#include <sys/socket.h>
+    ]], [socket connect accept bind getpeername getsockname getsockopt
+    listen recv send recvfrom sendto setsockopt shutdown accept4])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+])
+
+AC_DEFUN([gl_PREREQ_SYS_H_SOCKET],
+[
+  dnl Check prerequisites of the <sys/socket.h> replacement.
+  AC_REQUIRE([gl_CHECK_SOCKET_HEADERS])
+  gl_CHECK_NEXT_HEADERS([sys/socket.h])
+  if test $ac_cv_header_sys_socket_h = yes; then
+    HAVE_SYS_SOCKET_H=1
+  else
+    HAVE_SYS_SOCKET_H=0
+  fi
+  AC_SUBST([HAVE_SYS_SOCKET_H])
+  gl_PREREQ_SYS_H_WS2TCPIP
+])
+
+# Common prerequisites of the <sys/socket.h> replacement and of the
+# <sys/select.h> replacement.
+# Sets and substitutes HAVE_WINSOCK2_H.
+AC_DEFUN([gl_PREREQ_SYS_H_WINSOCK2],
+[
+  m4_ifdef([gl_UNISTD_H_DEFAULTS], [AC_REQUIRE([gl_UNISTD_H_DEFAULTS])])
+  m4_ifdef([gl_SYS_IOCTL_H_DEFAULTS], [AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])])
+  AC_CHECK_HEADERS_ONCE([sys/socket.h])
+  if test $ac_cv_header_sys_socket_h != yes; then
+    dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make
+    dnl the check for those headers unconditional; yet cygwin reports
+    dnl that the headers are present but cannot be compiled (since on
+    dnl cygwin, all socket information should come from sys/socket.h).
+    AC_CHECK_HEADERS([winsock2.h])
+  fi
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    HAVE_WINSOCK2_H=1
+    UNISTD_H_HAVE_WINSOCK2_H=1
+    SYS_IOCTL_H_HAVE_WINSOCK2_H=1
+  else
+    HAVE_WINSOCK2_H=0
+  fi
+  AC_SUBST([HAVE_WINSOCK2_H])
+])
+
+# Common prerequisites of the <sys/socket.h> replacement and of the
+# <arpa/inet.h> replacement.
+# Sets and substitutes HAVE_WS2TCPIP_H.
+AC_DEFUN([gl_PREREQ_SYS_H_WS2TCPIP],
+[
+  AC_REQUIRE([gl_CHECK_SOCKET_HEADERS])
+  if test $ac_cv_header_sys_socket_h = yes; then
+    HAVE_WS2TCPIP_H=0
+  else
+    if test $ac_cv_header_ws2tcpip_h = yes; then
+      HAVE_WS2TCPIP_H=1
+    else
+      HAVE_WS2TCPIP_H=0
+    fi
+  fi
+  AC_SUBST([HAVE_WS2TCPIP_H])
+])
+
+# gl_SYS_SOCKET_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_SYS_SOCKET_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_SYS_SOCKET_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_SOCKET_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SOCKET])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CONNECT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACCEPT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_BIND])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPEERNAME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETSOCKNAME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETSOCKOPT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LISTEN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RECV])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SEND])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RECVFROM])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SENDTO])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETSOCKOPT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SHUTDOWN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACCEPT4])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_SOCKET_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS],
+[
+  HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE])
+  HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=1;
+                        AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY])
+  HAVE_SA_FAMILY_T=1;   AC_SUBST([HAVE_SA_FAMILY_T])
+  HAVE_ACCEPT4=1;       AC_SUBST([HAVE_ACCEPT4])
+])
diff --git a/src/grep/m4/sys_stat_h.m4 b/src/grep/m4/sys_stat_h.m4
new file mode 100644
index 0000000..ac91d42
--- /dev/null
+++ b/src/grep/m4/sys_stat_h.m4
@@ -0,0 +1,127 @@
+# sys_stat_h.m4 serial 41   -*- Autoconf -*-
+dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Eric Blake.
+dnl Provide a GNU-like <sys/stat.h>.
+
+AC_DEFUN_ONCE([gl_SYS_STAT_H],
+[
+  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+
+  dnl Check for broken stat macros.
+  AC_REQUIRE([AC_HEADER_STAT])
+
+  gl_CHECK_NEXT_HEADERS([sys/stat.h])
+
+  dnl Ensure the type mode_t gets defined.
+  AC_REQUIRE([AC_TYPE_MODE_T])
+
+  dnl Whether to enable precise timestamps in 'struct stat'.
+  m4_ifdef([gl_WINDOWS_STAT_TIMESPEC], [
+    AC_REQUIRE([gl_WINDOWS_STAT_TIMESPEC])
+  ], [
+    WINDOWS_STAT_TIMESPEC=0
+  ])
+  AC_SUBST([WINDOWS_STAT_TIMESPEC])
+
+  dnl Whether to ensure that struct stat.st_size is 64-bit wide.
+  m4_ifdef([gl_LARGEFILE], [
+    AC_REQUIRE([gl_LARGEFILE])
+  ], [
+    WINDOWS_64_BIT_ST_SIZE=0
+  ])
+  AC_SUBST([WINDOWS_64_BIT_ST_SIZE])
+
+  dnl Define types that are supposed to be defined in <sys/types.h> or
+  dnl <sys/stat.h>.
+  AC_CHECK_TYPE([nlink_t], [],
+    [AC_DEFINE([nlink_t], [int],
+       [Define to the type of st_nlink in struct stat, or a supertype.])],
+    [#include <sys/types.h>
+     #include <sys/stat.h>])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <sys/stat.h>
+    ]], [fchmodat fstat fstatat futimens getumask lchmod lstat
+    mkdirat mkfifo mkfifoat mknod mknodat stat utimensat])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+])
+
+# gl_SYS_STAT_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_SYS_STAT_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_SYS_STAT_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_SYS_STAT_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_STAT_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_UNISTD_H_REQUIRE_DEFAULTS dnl for REPLACE_FCHDIR
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHMODAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSTAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSTATAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FUTIMENS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETUMASK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LCHMOD])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LSTAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKDIR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKDIRAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKFIFO])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKFIFOAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKNOD])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKNODAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UTIMENSAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OVERRIDES_STRUCT_STAT])
+    dnl Support Microsoft deprecated alias function names by default.
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CHMOD], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_MKDIR], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_UMASK], [1])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_STAT_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_SYS_STAT_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_FCHMODAT=1;      AC_SUBST([HAVE_FCHMODAT])
+  HAVE_FSTATAT=1;       AC_SUBST([HAVE_FSTATAT])
+  HAVE_FUTIMENS=1;      AC_SUBST([HAVE_FUTIMENS])
+  HAVE_GETUMASK=1;      AC_SUBST([HAVE_GETUMASK])
+  HAVE_LCHMOD=1;        AC_SUBST([HAVE_LCHMOD])
+  HAVE_LSTAT=1;         AC_SUBST([HAVE_LSTAT])
+  HAVE_MKDIRAT=1;       AC_SUBST([HAVE_MKDIRAT])
+  HAVE_MKFIFO=1;        AC_SUBST([HAVE_MKFIFO])
+  HAVE_MKFIFOAT=1;      AC_SUBST([HAVE_MKFIFOAT])
+  HAVE_MKNOD=1;         AC_SUBST([HAVE_MKNOD])
+  HAVE_MKNODAT=1;       AC_SUBST([HAVE_MKNODAT])
+  HAVE_UTIMENSAT=1;     AC_SUBST([HAVE_UTIMENSAT])
+  REPLACE_FCHMODAT=0;   AC_SUBST([REPLACE_FCHMODAT])
+  REPLACE_FSTAT=0;      AC_SUBST([REPLACE_FSTAT])
+  REPLACE_FSTATAT=0;    AC_SUBST([REPLACE_FSTATAT])
+  REPLACE_FUTIMENS=0;   AC_SUBST([REPLACE_FUTIMENS])
+  REPLACE_LSTAT=0;      AC_SUBST([REPLACE_LSTAT])
+  REPLACE_MKDIR=0;      AC_SUBST([REPLACE_MKDIR])
+  REPLACE_MKFIFO=0;     AC_SUBST([REPLACE_MKFIFO])
+  REPLACE_MKFIFOAT=0;   AC_SUBST([REPLACE_MKFIFOAT])
+  REPLACE_MKNOD=0;      AC_SUBST([REPLACE_MKNOD])
+  REPLACE_MKNODAT=0;    AC_SUBST([REPLACE_MKNODAT])
+  REPLACE_STAT=0;       AC_SUBST([REPLACE_STAT])
+  REPLACE_UTIMENSAT=0;  AC_SUBST([REPLACE_UTIMENSAT])
+])
diff --git a/src/grep/m4/sys_time_h.m4 b/src/grep/m4/sys_time_h.m4
new file mode 100644
index 0000000..c425a96
--- /dev/null
+++ b/src/grep/m4/sys_time_h.m4
@@ -0,0 +1,120 @@
+# Configure a replacement for <sys/time.h>.
+# serial 12
+
+# Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Written by Paul Eggert and Martin Lambers.
+
+AC_DEFUN_ONCE([gl_SYS_TIME_H],
+[
+  dnl Use AC_REQUIRE here, so that the REPLACE_GETTIMEOFDAY=0 statement
+  dnl below is expanded once only, before all REPLACE_GETTIMEOFDAY=1
+  dnl statements that occur in other macros.
+  AC_REQUIRE([gl_SYS_TIME_H_DEFAULTS])
+  AC_REQUIRE([AC_C_RESTRICT])
+  AC_CHECK_HEADERS_ONCE([sys/time.h])
+  gl_CHECK_NEXT_HEADERS([sys/time.h])
+
+  if test $ac_cv_header_sys_time_h != yes; then
+    HAVE_SYS_TIME_H=0
+  fi
+
+  dnl On native Windows with MSVC, 'struct timeval' is defined in <winsock2.h>
+  dnl only. So include that header in the list.
+  gl_PREREQ_SYS_H_WINSOCK2
+  AC_CACHE_CHECK([for struct timeval], [gl_cv_sys_struct_timeval],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#if HAVE_SYS_TIME_H
+             #include <sys/time.h>
+            #endif
+            #include <time.h>
+            #if HAVE_WINSOCK2_H
+            # include <winsock2.h>
+            #endif
+          ]],
+          [[static struct timeval x; x.tv_sec = x.tv_usec;]])],
+       [gl_cv_sys_struct_timeval=yes],
+       [gl_cv_sys_struct_timeval=no])
+    ])
+  if test $gl_cv_sys_struct_timeval != yes; then
+    HAVE_STRUCT_TIMEVAL=0
+  else
+    dnl On native Windows with a 64-bit 'time_t', 'struct timeval' is defined
+    dnl (in <sys/time.h> and <winsock2.h> for mingw64, in <winsock2.h> only
+    dnl for MSVC) with a tv_sec field of type 'long' (32-bit!), which is
+    dnl smaller than the 'time_t' type mandated by POSIX.
+    dnl On OpenBSD 5.1 amd64, tv_sec is 64 bits and time_t 32 bits, but
+    dnl that is good enough.
+    AC_CACHE_CHECK([for wide-enough struct timeval.tv_sec member],
+      [gl_cv_sys_struct_timeval_tv_sec],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#if HAVE_SYS_TIME_H
+               #include <sys/time.h>
+              #endif
+              #include <time.h>
+              #if HAVE_WINSOCK2_H
+              # include <winsock2.h>
+              #endif
+            ]],
+            [[static struct timeval x;
+              typedef int verify_tv_sec_type[
+                sizeof (time_t) <= sizeof x.tv_sec ? 1 : -1
+              ];
+            ]])],
+         [gl_cv_sys_struct_timeval_tv_sec=yes],
+         [gl_cv_sys_struct_timeval_tv_sec=no])
+      ])
+    if test $gl_cv_sys_struct_timeval_tv_sec != yes; then
+      REPLACE_STRUCT_TIMEVAL=1
+    fi
+  fi
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[
+#if HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
+#include <time.h>
+    ]], [gettimeofday])
+])
+
+# gl_SYS_TIME_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_SYS_TIME_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_SYS_TIME_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_SYS_TIME_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_TIME_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETTIMEOFDAY])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_TIME_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_SYS_TIME_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_SYS_TIME_H_DEFAULTS],
+[
+  dnl Assume POSIX behavior unless another module says otherwise.
+  HAVE_GETTIMEOFDAY=1;       AC_SUBST([HAVE_GETTIMEOFDAY])
+  HAVE_STRUCT_TIMEVAL=1;     AC_SUBST([HAVE_STRUCT_TIMEVAL])
+  HAVE_SYS_TIME_H=1;         AC_SUBST([HAVE_SYS_TIME_H])
+  REPLACE_GETTIMEOFDAY=0;    AC_SUBST([REPLACE_GETTIMEOFDAY])
+  REPLACE_STRUCT_TIMEVAL=0;  AC_SUBST([REPLACE_STRUCT_TIMEVAL])
+])
diff --git a/src/grep/m4/sys_types_h.m4 b/src/grep/m4/sys_types_h.m4
new file mode 100644
index 0000000..6dd6fee
--- /dev/null
+++ b/src/grep/m4/sys_types_h.m4
@@ -0,0 +1,70 @@
+# sys_types_h.m4 serial 13
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_SYS_TYPES_H],
+[
+  AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS])
+
+  dnl Use sane struct stat types in OpenVMS 8.2 and later.
+  AC_DEFINE([_USE_STD_STAT], 1, [For standard stat data types on VMS.])
+
+  gl_NEXT_HEADERS([sys/types.h])
+
+  dnl Ensure the type pid_t gets defined.
+  AC_REQUIRE([AC_TYPE_PID_T])
+
+  dnl Ensure the type mode_t gets defined.
+  AC_REQUIRE([AC_TYPE_MODE_T])
+
+  dnl Whether to override the 'off_t' type.
+  AC_REQUIRE([gl_TYPE_OFF_T])
+
+  dnl Whether to override the 'dev_t' and 'ino_t' types.
+  m4_ifdef([gl_WINDOWS_STAT_INODES], [
+    AC_REQUIRE([gl_WINDOWS_STAT_INODES])
+  ], [
+    WINDOWS_STAT_INODES=0
+  ])
+  AC_SUBST([WINDOWS_STAT_INODES])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_SYS_TYPES_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_TYPE_H_MODULE_INDICATOR_DEFAULTS], [
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_TYPE_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_SYS_TYPES_H_DEFAULTS],
+[
+])
+
+# This works around a buggy version in autoconf <= 2.69.
+# See <https://lists.gnu.org/r/autoconf/2016-08/msg00014.html>
+# The 2.70 version isn't quoted properly, so override it too.
+
+m4_version_prereq([2.70.1], [], [
+
+m4_undefine([AC_HEADER_MAJOR])
+AC_DEFUN([AC_HEADER_MAJOR],
+[AC_CHECK_HEADERS_ONCE([sys/types.h])
+AC_CHECK_HEADER([sys/mkdev.h],
+                [AC_DEFINE([MAJOR_IN_MKDEV], [1],
+                           [Define to 1 if `major', `minor', and `makedev' are
+                            declared in <mkdev.h>.])])
+if test $ac_cv_header_sys_mkdev_h = no; then
+  AC_CHECK_HEADER([sys/sysmacros.h],
+                  [AC_DEFINE([MAJOR_IN_SYSMACROS], [1],
+                             [Define to 1 if `major', `minor', and `makedev'
+                              are declared in <sysmacros.h>.])])
+fi
+])# AC_HEADER_MAJOR
+
+])
diff --git a/src/grep/m4/sys_uio_h.m4 b/src/grep/m4/sys_uio_h.m4
new file mode 100644
index 0000000..fa176e0
--- /dev/null
+++ b/src/grep/m4/sys_uio_h.m4
@@ -0,0 +1,46 @@
+# sys_uio_h.m4 serial 3
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_SYS_UIO_H],
+[
+  AC_REQUIRE([gl_SYS_UIO_H_DEFAULTS])
+  dnl <sys/uio.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_CHECK_NEXT_HEADERS([sys/uio.h])
+  if test $ac_cv_header_sys_uio_h = yes; then
+    HAVE_SYS_UIO_H=1
+  else
+    HAVE_SYS_UIO_H=0
+  fi
+  AC_SUBST([HAVE_SYS_UIO_H])
+])
+
+# gl_SYS_UIO_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_SYS_UIO_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_SYS_UIO_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_SYS_UIO_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_UIO_H_MODULE_INDICATOR_DEFAULTS], [
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_UIO_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_SYS_UIO_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_SYS_UIO_H_DEFAULTS],
+[
+])
diff --git a/src/grep/m4/thread.m4 b/src/grep/m4/thread.m4
new file mode 100644
index 0000000..8ec9cc3
--- /dev/null
+++ b/src/grep/m4/thread.m4
@@ -0,0 +1,17 @@
+# thread.m4 serial 3
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_THREAD],
+[
+  AC_REQUIRE([gl_THREADLIB])
+
+  if test $gl_threads_api = posix; then
+    gl_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBMULTITHREAD"
+    AC_CHECK_FUNCS([pthread_atfork])
+    LIBS="$gl_save_LIBS"
+  fi
+])
diff --git a/src/grep/m4/threadlib.m4 b/src/grep/m4/threadlib.m4
new file mode 100644
index 0000000..37b797c
--- /dev/null
+++ b/src/grep/m4/threadlib.m4
@@ -0,0 +1,654 @@
+# threadlib.m4 serial 31
+dnl Copyright (C) 2005-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_PREREQ([2.60])
+
+dnl The general structure of the multithreading modules in gnulib is that we
+dnl have three set of modules:
+dnl
+dnl   * POSIX API:
+dnl     pthread, which combines
+dnl       pthread-h
+dnl       pthread-thread
+dnl       pthread-once
+dnl       pthread-mutex
+dnl       pthread-rwlock
+dnl       pthread-cond
+dnl       pthread-tss
+dnl       pthread-spin
+dnl     sched_yield
+dnl
+dnl   * ISO C API:
+dnl     threads, which combines
+dnl       threads-h
+dnl       thrd
+dnl       mtx
+dnl       cnd
+dnl       tss
+dnl
+dnl   * Gnulib API, with an implementation that can be chosen at configure
+dnl     time through the option --enable-threads=...
+dnl       thread
+dnl       lock
+dnl       cond
+dnl       tls
+dnl       yield
+dnl
+dnl They are independent, except for the fact that
+dnl   - the implementation of the ISO C API may use the POSIX (or some other
+dnl     platform dependent) API,
+dnl   - the implementation of the Gnulib API may use the POSIX or ISO C or
+dnl     some other platform dependent API, depending on the --enable-threads
+dnl     option.
+dnl
+dnl This file contains macros for all of these APIs!
+
+dnl ============================================================================
+dnl Macros for all thread APIs
+
+AC_DEFUN([gl_ANYTHREADLIB_EARLY],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  if test -z "$gl_anythreadlib_early_done"; then
+    case "$host_os" in
+      osf*)
+        # On OSF/1, the compiler needs the flag -D_REENTRANT so that it
+        # groks <pthread.h>. cc also understands the flag -pthread, but
+        # we don't use it because 1. gcc-2.95 doesn't understand -pthread,
+        # 2. putting a flag into CPPFLAGS that has an effect on the linker
+        # causes the AC_LINK_IFELSE test below to succeed unexpectedly,
+        # leading to wrong values of LIBTHREAD and LTLIBTHREAD.
+        CPPFLAGS="$CPPFLAGS -D_REENTRANT"
+        ;;
+    esac
+    # Some systems optimize for single-threaded programs by default, and
+    # need special flags to disable these optimizations. For example, the
+    # definition of 'errno' in <errno.h>.
+    case "$host_os" in
+      aix* | freebsd*) CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE" ;;
+      solaris*) CPPFLAGS="$CPPFLAGS -D_REENTRANT" ;;
+    esac
+    gl_anythreadlib_early_done=done
+  fi
+])
+
+dnl Checks whether the compiler and linker support weak declarations of symbols.
+
+AC_DEFUN([gl_WEAK_SYMBOLS],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CACHE_CHECK([whether imported symbols can be declared weak],
+    [gl_cv_have_weak],
+    [gl_cv_have_weak=no
+     dnl First, test whether the compiler accepts it syntactically.
+     AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[extern void xyzzy ();
+#pragma weak xyzzy]],
+          [[xyzzy();]])],
+       [gl_cv_have_weak=maybe])
+     if test $gl_cv_have_weak = maybe; then
+       dnl Second, test whether it actually works. On Cygwin 1.7.2, with
+       dnl gcc 4.3, symbols declared weak always evaluate to the address 0.
+       AC_RUN_IFELSE(
+         [AC_LANG_SOURCE([[
+#include <stdio.h>
+#pragma weak fputs
+int main ()
+{
+  return (fputs == NULL);
+}]])],
+         [gl_cv_have_weak=yes],
+         [gl_cv_have_weak=no],
+         [dnl When cross-compiling, assume that only ELF platforms support
+          dnl weak symbols.
+          AC_EGREP_CPP([Extensible Linking Format],
+            [#ifdef __ELF__
+             Extensible Linking Format
+             #endif
+            ],
+            [gl_cv_have_weak="guessing yes"],
+            [gl_cv_have_weak="guessing no"])
+         ])
+     fi
+     dnl But when linking statically, weak symbols don't work.
+     case " $LDFLAGS " in
+       *" -static "*) gl_cv_have_weak=no ;;
+     esac
+     dnl Test for a bug in FreeBSD 11: A link error occurs when using a weak
+     dnl symbol and linking against a shared library that has a dependency on
+     dnl the shared library that defines the symbol.
+     case "$gl_cv_have_weak" in
+       *yes)
+         case "$host_os" in
+           freebsd* | dragonfly* | midnightbsd*)
+             : > conftest1.c
+             $CC $CPPFLAGS $CFLAGS $LDFLAGS -fPIC -shared -o libempty.so conftest1.c -lpthread >&AS_MESSAGE_LOG_FD 2>&1
+             cat <<EOF > conftest2.c
+#include <pthread.h>
+#pragma weak pthread_mutexattr_gettype
+int main ()
+{
+  return (pthread_mutexattr_gettype != NULL);
+}
+EOF
+             $CC $CPPFLAGS $CFLAGS $LDFLAGS -o conftest conftest2.c libempty.so >&AS_MESSAGE_LOG_FD 2>&1 \
+               || gl_cv_have_weak=no
+             rm -f conftest1.c libempty.so conftest2.c conftest
+             ;;
+         esac
+         ;;
+     esac
+    ])
+  case "$gl_cv_have_weak" in
+    *yes)
+      AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
+        [Define to 1 if the compiler and linker support weak declarations of symbols.])
+      ;;
+  esac
+])
+
+dnl ============================================================================
+dnl Macros for the POSIX API
+
+dnl gl_PTHREADLIB
+dnl -------------
+dnl Tests for the libraries needs for using the POSIX threads API.
+dnl Sets the variable LIBPTHREAD to the linker options for use in a Makefile.
+dnl Sets the variable LIBPMULTITHREAD, for programs that really need
+dnl multithread functionality. The difference between LIBPTHREAD and
+dnl LIBPMULTITHREAD is that on platforms supporting weak symbols, typically
+dnl LIBPTHREAD is empty whereas LIBPMULTITHREAD is not.
+dnl Sets the variable LIB_SCHED_YIELD to the linker options needed to use the
+dnl sched_yield() function.
+dnl Adds to CPPFLAGS the flag -D_REENTRANT or -D_THREAD_SAFE if needed for
+dnl multithread-safe programs.
+dnl Defines the C macro HAVE_PTHREAD_API if (at least parts of) the POSIX
+dnl threads API is available.
+
+dnl The guts of gl_PTHREADLIB. Needs to be expanded only once.
+
+AC_DEFUN([gl_PTHREADLIB_BODY],
+[
+  AC_REQUIRE([gl_ANYTHREADLIB_EARLY])
+  if test -z "$gl_pthreadlib_body_done"; then
+    gl_pthread_api=no
+    LIBPTHREAD=
+    LIBPMULTITHREAD=
+    # On OSF/1, the compiler needs the flag -pthread or -D_REENTRANT so that
+    # it groks <pthread.h>. It's added above, in gl_ANYTHREADLIB_EARLY.
+    AC_CHECK_HEADER([pthread.h],
+      [gl_have_pthread_h=yes], [gl_have_pthread_h=no])
+    if test "$gl_have_pthread_h" = yes; then
+      # Other possible tests:
+      #   -lpthreads (FSU threads, PCthreads)
+      #   -lgthreads
+      # Test whether both pthread_mutex_lock and pthread_mutexattr_init exist
+      # in libc. IRIX 6.5 has the first one in both libc and libpthread, but
+      # the second one only in libpthread, and lock.c needs it.
+      #
+      # If -pthread works, prefer it to -lpthread, since Ubuntu 14.04
+      # needs -pthread for some reason.  See:
+      # https://lists.gnu.org/r/bug-gnulib/2014-09/msg00023.html
+      save_LIBS=$LIBS
+      for gl_pthread in '' '-pthread'; do
+        LIBS="$LIBS $gl_pthread"
+        AC_LINK_IFELSE(
+          [AC_LANG_PROGRAM(
+             [[#include <pthread.h>
+               pthread_mutex_t m;
+               pthread_mutexattr_t ma;
+             ]],
+             [[pthread_mutex_lock (&m);
+               pthread_mutexattr_init (&ma);]])],
+          [gl_pthread_api=yes
+           LIBPTHREAD=$gl_pthread
+           LIBPMULTITHREAD=$gl_pthread])
+        LIBS=$save_LIBS
+        test $gl_pthread_api = yes && break
+      done
+      echo "$as_me:__oline__: gl_pthread_api=$gl_pthread_api" >&AS_MESSAGE_LOG_FD
+      echo "$as_me:__oline__: LIBPTHREAD=$LIBPTHREAD" >&AS_MESSAGE_LOG_FD
+
+      gl_pthread_in_glibc=no
+      # On Linux with glibc >= 2.34, libc contains the fully functional
+      # pthread functions.
+      case "$host_os" in
+        linux*)
+          AC_EGREP_CPP([Lucky user],
+            [#include <features.h>
+             #ifdef __GNU_LIBRARY__
+              #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 34) || (__GLIBC__ > 2)
+               Lucky user
+              #endif
+             #endif
+            ],
+            [gl_pthread_in_glibc=yes],
+            [])
+          ;;
+      esac
+      echo "$as_me:__oline__: gl_pthread_in_glibc=$gl_pthread_in_glibc" >&AS_MESSAGE_LOG_FD
+
+      # Test for libpthread by looking for pthread_kill. (Not pthread_self,
+      # since it is defined as a macro on OSF/1.)
+      if test $gl_pthread_api = yes && test -z "$LIBPTHREAD"; then
+        # The program links fine without libpthread. But it may actually
+        # need to link with libpthread in order to create multiple threads.
+        AC_CHECK_LIB([pthread], [pthread_kill],
+          [if test $gl_pthread_in_glibc = yes; then
+             LIBPMULTITHREAD=
+           else
+             LIBPMULTITHREAD=-lpthread
+             # On Solaris and HP-UX, most pthread functions exist also in libc.
+             # Therefore pthread_in_use() needs to actually try to create a
+             # thread: pthread_create from libc will fail, whereas
+             # pthread_create will actually create a thread.
+             # On Solaris 10 or newer, this test is no longer needed, because
+             # libc contains the fully functional pthread functions.
+             case "$host_os" in
+               solaris | solaris2.[1-9] | solaris2.[1-9].* | hpux*)
+                 AC_DEFINE([PTHREAD_IN_USE_DETECTION_HARD], [1],
+                   [Define if the pthread_in_use() detection is hard.])
+             esac
+           fi
+          ])
+      elif test $gl_pthread_api != yes; then
+        # Some library is needed. Try libpthread and libc_r.
+        AC_CHECK_LIB([pthread], [pthread_kill],
+          [gl_pthread_api=yes
+           LIBPTHREAD=-lpthread
+           LIBPMULTITHREAD=-lpthread])
+        if test $gl_pthread_api != yes; then
+          # For FreeBSD 4.
+          AC_CHECK_LIB([c_r], [pthread_kill],
+            [gl_pthread_api=yes
+             LIBPTHREAD=-lc_r
+             LIBPMULTITHREAD=-lc_r])
+        fi
+      fi
+      echo "$as_me:__oline__: LIBPMULTITHREAD=$LIBPMULTITHREAD" >&AS_MESSAGE_LOG_FD
+    fi
+    AC_MSG_CHECKING([whether POSIX threads API is available])
+    AC_MSG_RESULT([$gl_pthread_api])
+    AC_SUBST([LIBPTHREAD])
+    AC_SUBST([LIBPMULTITHREAD])
+    if test $gl_pthread_api = yes; then
+      AC_DEFINE([HAVE_PTHREAD_API], [1],
+        [Define if you have the <pthread.h> header and the POSIX threads API.])
+    fi
+
+    dnl On some systems, sched_yield is in librt, rather than in libpthread.
+    AC_LINK_IFELSE(
+      [AC_LANG_PROGRAM(
+         [[#include <sched.h>]],
+         [[sched_yield ();]])],
+      [LIB_SCHED_YIELD=
+      ],
+      [dnl Solaris 7...10 has sched_yield in librt, not in libpthread or libc.
+       AC_CHECK_LIB([rt], [sched_yield], [LIB_SCHED_YIELD=-lrt],
+         [dnl Solaris 2.5.1, 2.6 has sched_yield in libposix4, not librt.
+          AC_CHECK_LIB([posix4], [sched_yield], [LIB_SCHED_YIELD=-lposix4])])
+      ])
+    AC_SUBST([LIB_SCHED_YIELD])
+
+    gl_pthreadlib_body_done=done
+  fi
+])
+
+AC_DEFUN([gl_PTHREADLIB],
+[
+  AC_REQUIRE([gl_ANYTHREADLIB_EARLY])
+  gl_PTHREADLIB_BODY
+])
+
+dnl ============================================================================
+dnl Macros for the ISO C API
+
+dnl gl_STDTHREADLIB
+dnl ---------------
+dnl Tests for the libraries needs for using the ISO C threads API.
+dnl Sets the variable LIBSTDTHREAD to the linker options for use in a Makefile.
+dnl Adds to CPPFLAGS the flag -D_REENTRANT or -D_THREAD_SAFE if needed for
+dnl multithread-safe programs.
+dnl Defines the C macro HAVE_THREADS_H if (at least parts of) the ISO C threads
+dnl API is available.
+
+dnl The guts of gl_STDTHREADLIB. Needs to be expanded only once.
+
+AC_DEFUN([gl_STDTHREADLIB_BODY],
+[
+  AC_REQUIRE([gl_ANYTHREADLIB_EARLY])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  if test -z "$gl_stdthreadlib_body_done"; then
+    AC_CHECK_HEADERS_ONCE([threads.h])
+
+    case "$host_os" in
+      mingw*)
+        LIBSTDTHREAD=
+        ;;
+      *)
+        gl_PTHREADLIB_BODY
+        if test $ac_cv_header_threads_h = yes; then
+          dnl glibc >= 2.29 has thrd_create in libpthread.
+          dnl FreeBSD >= 10 has thrd_create in libstdthreads; this library depends
+          dnl on libpthread (for the symbol 'pthread_mutexattr_gettype').
+          dnl glibc >= 2.34, AIX >= 7.1, and Solaris >= 11.4 have thrd_create in
+          dnl libc.
+          AC_CHECK_FUNCS([thrd_create])
+          if test $ac_cv_func_thrd_create = yes; then
+            LIBSTDTHREAD=
+          else
+            AC_CHECK_LIB([stdthreads], [thrd_create], [
+              LIBSTDTHREAD='-lstdthreads -lpthread'
+            ], [
+              dnl Guess that thrd_create is in libpthread.
+              LIBSTDTHREAD="$LIBPMULTITHREAD"
+            ])
+          fi
+        else
+          dnl Libraries needed by thrd.c, mtx.c, cnd.c, tss.c.
+          LIBSTDTHREAD="$LIBPMULTITHREAD $LIB_SCHED_YIELD"
+        fi
+        ;;
+    esac
+    AC_SUBST([LIBSTDTHREAD])
+
+    AC_MSG_CHECKING([whether ISO C threads API is available])
+    AC_MSG_RESULT([$ac_cv_header_threads_h])
+    gl_stdthreadlib_body_done=done
+  fi
+])
+
+AC_DEFUN([gl_STDTHREADLIB],
+[
+  AC_REQUIRE([gl_ANYTHREADLIB_EARLY])
+  gl_STDTHREADLIB_BODY
+])
+
+dnl ============================================================================
+dnl Macros for the Gnulib API
+
+dnl gl_THREADLIB
+dnl ------------
+dnl Tests for a multithreading library to be used.
+dnl If the configure.ac contains a definition of the gl_THREADLIB_DEFAULT_NO
+dnl (it must be placed before the invocation of gl_THREADLIB_EARLY!), then the
+dnl default is 'no', otherwise it is system dependent. In both cases, the user
+dnl can change the choice through the options --enable-threads=choice or
+dnl --disable-threads.
+dnl Defines at most one of the macros USE_ISOC_THREADS, USE_POSIX_THREADS,
+dnl USE_ISOC_AND_POSIX_THREADS, USE_WINDOWS_THREADS.
+dnl The choice --enable-threads=isoc+posix is available only on platforms that
+dnl have both the ISO C and the POSIX threads APIs. It has the effect of using
+dnl the ISO C API for most things and the POSIX API only for creating and
+dnl controlling threads (because there is no equivalent to pthread_atfork in
+dnl the ISO C API).
+dnl Sets the variables LIBTHREAD and LTLIBTHREAD to the linker options for use
+dnl in a Makefile (LIBTHREAD for use without libtool, LTLIBTHREAD for use with
+dnl libtool).
+dnl Sets the variables LIBMULTITHREAD and LTLIBMULTITHREAD similarly, for
+dnl programs that really need multithread functionality. The difference
+dnl between LIBTHREAD and LIBMULTITHREAD is that on platforms supporting weak
+dnl symbols, typically LIBTHREAD is empty whereas LIBMULTITHREAD is not.
+dnl Adds to CPPFLAGS the flag -D_REENTRANT or -D_THREAD_SAFE if needed for
+dnl multithread-safe programs.
+dnl Since support for GNU pth was removed, $LTLIBTHREAD and $LIBTHREAD have the
+dnl same value, and similarly $LTLIBMULTITHREAD and $LIBMULTITHREAD have the
+dnl same value. Only system libraries are needed.
+
+AC_DEFUN([gl_THREADLIB_EARLY],
+[
+  AC_REQUIRE([gl_THREADLIB_EARLY_BODY])
+])
+
+dnl The guts of gl_THREADLIB_EARLY. Needs to be expanded only once.
+
+AC_DEFUN([gl_THREADLIB_EARLY_BODY],
+[
+  dnl Ordering constraints: This macro modifies CPPFLAGS in a way that
+  dnl influences the result of the autoconf tests that test for *_unlocked
+  dnl declarations, on AIX 5 at least. Therefore it must come early.
+  AC_BEFORE([$0], [gl_FUNC_GLIBC_UNLOCKED_IO])dnl
+  AC_BEFORE([$0], [gl_ARGP])dnl
+
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  dnl _GNU_SOURCE is needed for pthread_rwlock_t on glibc systems.
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+  dnl Check for multithreading.
+  m4_ifdef([gl_THREADLIB_DEFAULT_NO],
+    [m4_divert_text([DEFAULTS], [gl_use_threads_default=no])],
+    [m4_divert_text([DEFAULTS], [gl_use_threads_default=])])
+  m4_divert_text([DEFAULTS], [gl_use_winpthreads_default=])
+  AC_ARG_ENABLE([threads],
+AS_HELP_STRING([--enable-threads={isoc|posix|isoc+posix|windows}], [specify multithreading API])m4_ifdef([gl_THREADLIB_DEFAULT_NO], [], [
+AS_HELP_STRING([--disable-threads], [build without multithread safety])]),
+    [gl_use_threads=$enableval],
+    [if test -n "$gl_use_threads_default"; then
+       gl_use_threads="$gl_use_threads_default"
+     else
+changequote(,)dnl
+       case "$host_os" in
+         dnl Disable multithreading by default on OSF/1, because it interferes
+         dnl with fork()/exec(): When msgexec is linked with -lpthread, its
+         dnl child process gets an endless segmentation fault inside execvp().
+         osf*) gl_use_threads=no ;;
+         dnl Disable multithreading by default on Cygwin 1.5.x, because it has
+         dnl bugs that lead to endless loops or crashes. See
+         dnl <https://cygwin.com/ml/cygwin/2009-08/msg00283.html>.
+         cygwin*)
+               case `uname -r` in
+                 1.[0-5].*) gl_use_threads=no ;;
+                 *)         gl_use_threads=yes ;;
+               esac
+               ;;
+         dnl Obey gl_AVOID_WINPTHREAD on mingw.
+         mingw*)
+               case "$gl_use_winpthreads_default" in
+                 yes) gl_use_threads=posix ;;
+                 no)  gl_use_threads=windows ;;
+                 *)   gl_use_threads=yes ;;
+               esac
+               ;;
+         *)    gl_use_threads=yes ;;
+       esac
+changequote([,])dnl
+     fi
+    ])
+  if test "$gl_use_threads" = yes \
+     || test "$gl_use_threads" = isoc \
+     || test "$gl_use_threads" = posix \
+     || test "$gl_use_threads" = isoc+posix; then
+    # For using <threads.h> or <pthread.h>:
+    gl_ANYTHREADLIB_EARLY
+  fi
+])
+
+dnl The guts of gl_THREADLIB. Needs to be expanded only once.
+
+AC_DEFUN([gl_THREADLIB_BODY],
+[
+  AC_REQUIRE([gl_THREADLIB_EARLY_BODY])
+  gl_threads_api=none
+  LIBTHREAD=
+  LTLIBTHREAD=
+  LIBMULTITHREAD=
+  LTLIBMULTITHREAD=
+  if test "$gl_use_threads" != no; then
+    dnl Check whether the compiler and linker support weak declarations.
+    gl_WEAK_SYMBOLS
+    if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then
+      dnl If we use weak symbols to implement pthread_in_use / pth_in_use /
+      dnl thread_in_use, we also need to test whether the ISO C 11 thrd_create
+      dnl facility is in use.
+      AC_CHECK_HEADERS_ONCE([threads.h])
+      :
+    fi
+    if test "$gl_use_threads" = isoc || test "$gl_use_threads" = isoc+posix; then
+      AC_CHECK_HEADERS_ONCE([threads.h])
+      gl_have_isoc_threads="$ac_cv_header_threads_h"
+    fi
+    if test "$gl_use_threads" = yes \
+       || test "$gl_use_threads" = posix \
+       || test "$gl_use_threads" = isoc+posix; then
+      gl_PTHREADLIB_BODY
+      LIBTHREAD=$LIBPTHREAD LTLIBTHREAD=$LIBPTHREAD
+      LIBMULTITHREAD=$LIBPMULTITHREAD LTLIBMULTITHREAD=$LIBPMULTITHREAD
+      if test $gl_pthread_api = yes; then
+        if test "$gl_use_threads" = isoc+posix && test "$gl_have_isoc_threads" = yes; then
+          gl_threads_api='isoc+posix'
+          AC_DEFINE([USE_ISOC_AND_POSIX_THREADS], [1],
+            [Define if the combination of the ISO C and POSIX multithreading APIs can be used.])
+          LIBTHREAD= LTLIBTHREAD=
+        else
+          gl_threads_api=posix
+          AC_DEFINE([USE_POSIX_THREADS], [1],
+            [Define if the POSIX multithreading library can be used.])
+          if test -z "$LIBMULTITHREAD" && test -z "$LTLIBMULTITHREAD"; then
+            AC_DEFINE([USE_POSIX_THREADS_FROM_LIBC], [1],
+              [Define if references to the POSIX multithreading library are satisfied by libc.])
+          else
+            if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then
+              AC_DEFINE([USE_POSIX_THREADS_WEAK], [1],
+                [Define if references to the POSIX multithreading library should be made weak.])
+              LIBTHREAD= LTLIBTHREAD=
+            else
+              case "$host_os" in
+                freebsd* | dragonfly* | midnightbsd*)
+                  if test "x$LIBTHREAD" != "x$LIBMULTITHREAD"; then
+                    dnl If weak symbols can't tell whether pthread_create(), pthread_key_create()
+                    dnl etc. will succeed, we need a runtime test.
+                    AC_DEFINE([PTHREAD_IN_USE_DETECTION_HARD], [1],
+                      [Define if the pthread_in_use() detection is hard.])
+                  fi
+                  ;;
+              esac
+            fi
+          fi
+        fi
+      fi
+    fi
+    if test $gl_threads_api = none; then
+      if test "$gl_use_threads" = isoc && test "$gl_have_isoc_threads" = yes; then
+        gl_STDTHREADLIB_BODY
+        LIBTHREAD=$LIBSTDTHREAD LTLIBTHREAD=$LIBSTDTHREAD
+        LIBMULTITHREAD=$LIBSTDTHREAD LTLIBMULTITHREAD=$LIBSTDTHREAD
+        gl_threads_api=isoc
+        AC_DEFINE([USE_ISOC_THREADS], [1],
+          [Define if the ISO C multithreading library can be used.])
+      fi
+    fi
+    if test $gl_threads_api = none; then
+      case "$gl_use_threads" in
+        yes | windows | win32) # The 'win32' is for backward compatibility.
+          if { case "$host_os" in
+                 mingw*) true;;
+                 *) false;;
+               esac
+             }; then
+            gl_threads_api=windows
+            AC_DEFINE([USE_WINDOWS_THREADS], [1],
+              [Define if the native Windows multithreading API can be used.])
+          fi
+          ;;
+      esac
+    fi
+  fi
+  AC_MSG_CHECKING([for multithread API to use])
+  AC_MSG_RESULT([$gl_threads_api])
+  AC_SUBST([LIBTHREAD])
+  AC_SUBST([LTLIBTHREAD])
+  AC_SUBST([LIBMULTITHREAD])
+  AC_SUBST([LTLIBMULTITHREAD])
+])
+
+AC_DEFUN([gl_THREADLIB],
+[
+  AC_REQUIRE([gl_THREADLIB_EARLY])
+  AC_REQUIRE([gl_THREADLIB_BODY])
+])
+
+
+dnl gl_DISABLE_THREADS
+dnl ------------------
+dnl Sets the gl_THREADLIB default so that threads are not used by default.
+dnl The user can still override it at installation time, by using the
+dnl configure option '--enable-threads'.
+
+AC_DEFUN([gl_DISABLE_THREADS], [
+  m4_divert_text([INIT_PREPARE], [gl_use_threads_default=no])
+])
+
+
+dnl gl_AVOID_WINPTHREAD
+dnl -------------------
+dnl Sets the gl_THREADLIB default so that on mingw, a dependency to the
+dnl libwinpthread DLL (mingw-w64 winpthreads library) is avoided.
+dnl The user can still override it at installation time, by using the
+dnl configure option '--enable-threads'.
+
+AC_DEFUN([gl_AVOID_WINPTHREAD], [
+  m4_divert_text([INIT_PREPARE], [gl_use_winpthreads_default=no])
+])
+
+
+dnl ============================================================================
+
+
+dnl Survey of platforms:
+dnl
+dnl Platform           Available  Compiler    Supports   test-lock
+dnl                    flavours   option      weak       result
+dnl ---------------    ---------  ---------   --------   ---------
+dnl Linux 2.4/glibc    posix      -lpthread       Y      OK
+dnl
+dnl Linux/glibc 2.34   posix                      Y      OK
+dnl
+dnl GNU Hurd/glibc     posix      -lpthread       Y      OK
+dnl
+dnl Ubuntu 14.04       posix      -pthread        Y      OK
+dnl
+dnl FreeBSD 5.3        posix      -lc_r           Y
+dnl                    posix      -lkse ?         Y
+dnl                    posix      -lpthread ?     Y
+dnl                    posix      -lthr           Y
+dnl
+dnl FreeBSD 5.2        posix      -lc_r           Y
+dnl                    posix      -lkse           Y
+dnl                    posix      -lthr           Y
+dnl
+dnl FreeBSD 4.0,4.10   posix      -lc_r           Y      OK
+dnl
+dnl NetBSD 1.6         --
+dnl
+dnl OpenBSD 3.4        posix      -lpthread       Y      OK
+dnl
+dnl Mac OS X 10.[123]  posix      -lpthread       Y      OK
+dnl
+dnl Solaris 7,8,9      posix      -lpthread       Y      Sol 7,8: 0.0; Sol 9: OK
+dnl
+dnl HP-UX 11           posix      -lpthread       N (cc) OK
+dnl                                               Y (gcc)
+dnl
+dnl IRIX 6.5           posix      -lpthread       Y      0.5
+dnl
+dnl AIX 4.3,5.1        posix      -lpthread       N      AIX 4: 0.5; AIX 5: OK
+dnl
+dnl OSF/1 4.0,5.1      posix      -pthread (cc)   N      OK
+dnl                               -lpthread (gcc) Y
+dnl
+dnl Cygwin             posix      -lpthread       Y      OK
+dnl
+dnl Mingw              windows                    N      OK
+dnl
+dnl BeOS 5             --
+dnl
+dnl The test-lock result shows what happens if in test-lock.c EXPLICIT_YIELD is
+dnl turned off:
+dnl   OK if all three tests terminate OK,
+dnl   0.5 if the first test terminates OK but the second one loops endlessly,
+dnl   0.0 if the first test already loops endlessly.
diff --git a/src/grep/m4/time_h.m4 b/src/grep/m4/time_h.m4
new file mode 100644
index 0000000..b57474b
--- /dev/null
+++ b/src/grep/m4/time_h.m4
@@ -0,0 +1,175 @@
+# Configure a more-standard replacement for <time.h>.
+
+# Copyright (C) 2000-2001, 2003-2007, 2009-2021 Free Software Foundation, Inc.
+
+# serial 18
+
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Written by Paul Eggert and Jim Meyering.
+
+AC_DEFUN_ONCE([gl_TIME_H],
+[
+  dnl Ensure to expand the default settings once only, before all statements
+  dnl that occur in other macros.
+  AC_REQUIRE([gl_TIME_H_DEFAULTS])
+
+  gl_NEXT_HEADERS([time.h])
+  AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+
+  AC_CACHE_CHECK([for TIME_UTC in <time.h>],
+    [gl_cv_time_h_has_TIME_UTC],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <time.h>
+          ]],
+          [[static int x = TIME_UTC; x++;]])],
+       [gl_cv_time_h_has_TIME_UTC=yes],
+       [gl_cv_time_h_has_TIME_UTC=no])])
+  if test $gl_cv_time_h_has_TIME_UTC = yes; then
+    TIME_H_DEFINES_TIME_UTC=1
+  else
+    TIME_H_DEFINES_TIME_UTC=0
+  fi
+  AC_SUBST([TIME_H_DEFINES_TIME_UTC])
+])
+
+dnl Check whether 'struct timespec' is declared
+dnl in time.h, sys/time.h, pthread.h, or unistd.h.
+
+AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
+[
+  AC_CHECK_HEADERS_ONCE([sys/time.h])
+  AC_CACHE_CHECK([for struct timespec in <time.h>],
+    [gl_cv_sys_struct_timespec_in_time_h],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <time.h>
+          ]],
+          [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
+       [gl_cv_sys_struct_timespec_in_time_h=yes],
+       [gl_cv_sys_struct_timespec_in_time_h=no])])
+
+  TIME_H_DEFINES_STRUCT_TIMESPEC=0
+  SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=0
+  PTHREAD_H_DEFINES_STRUCT_TIMESPEC=0
+  UNISTD_H_DEFINES_STRUCT_TIMESPEC=0
+  if test $gl_cv_sys_struct_timespec_in_time_h = yes; then
+    TIME_H_DEFINES_STRUCT_TIMESPEC=1
+  else
+    AC_CACHE_CHECK([for struct timespec in <sys/time.h>],
+      [gl_cv_sys_struct_timespec_in_sys_time_h],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <sys/time.h>
+            ]],
+            [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
+         [gl_cv_sys_struct_timespec_in_sys_time_h=yes],
+         [gl_cv_sys_struct_timespec_in_sys_time_h=no])])
+    if test $gl_cv_sys_struct_timespec_in_sys_time_h = yes; then
+      SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=1
+    else
+      AC_CACHE_CHECK([for struct timespec in <pthread.h>],
+        [gl_cv_sys_struct_timespec_in_pthread_h],
+        [AC_COMPILE_IFELSE(
+           [AC_LANG_PROGRAM(
+              [[#include <pthread.h>
+              ]],
+              [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
+           [gl_cv_sys_struct_timespec_in_pthread_h=yes],
+           [gl_cv_sys_struct_timespec_in_pthread_h=no])])
+      if test $gl_cv_sys_struct_timespec_in_pthread_h = yes; then
+        PTHREAD_H_DEFINES_STRUCT_TIMESPEC=1
+      else
+        AC_CACHE_CHECK([for struct timespec in <unistd.h>],
+          [gl_cv_sys_struct_timespec_in_unistd_h],
+          [AC_COMPILE_IFELSE(
+             [AC_LANG_PROGRAM(
+                [[#include <unistd.h>
+                ]],
+                [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
+             [gl_cv_sys_struct_timespec_in_unistd_h=yes],
+             [gl_cv_sys_struct_timespec_in_unistd_h=no])])
+        if test $gl_cv_sys_struct_timespec_in_unistd_h = yes; then
+          UNISTD_H_DEFINES_STRUCT_TIMESPEC=1
+        fi
+      fi
+    fi
+  fi
+  AC_SUBST([TIME_H_DEFINES_STRUCT_TIMESPEC])
+  AC_SUBST([SYS_TIME_H_DEFINES_STRUCT_TIMESPEC])
+  AC_SUBST([PTHREAD_H_DEFINES_STRUCT_TIMESPEC])
+  AC_SUBST([UNISTD_H_DEFINES_STRUCT_TIMESPEC])
+])
+
+# gl_TIME_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_TIME_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_TIME_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_TIME_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_TIME_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CTIME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKTIME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOCALTIME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_NANOSLEEP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRFTIME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRPTIME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TIMEGM])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TIMESPEC_GET])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TIME_R])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TIME_RZ])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TZSET])
+    dnl Support Microsoft deprecated alias function names by default.
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_TZSET], [1])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_TIME_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_TIME_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_TIME_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_DECL_LOCALTIME_R=1;               AC_SUBST([HAVE_DECL_LOCALTIME_R])
+  HAVE_NANOSLEEP=1;                      AC_SUBST([HAVE_NANOSLEEP])
+  HAVE_STRPTIME=1;                       AC_SUBST([HAVE_STRPTIME])
+  HAVE_TIMEGM=1;                         AC_SUBST([HAVE_TIMEGM])
+  HAVE_TIMESPEC_GET=1;                   AC_SUBST([HAVE_TIMESPEC_GET])
+  dnl Even GNU libc does not have timezone_t yet.
+  HAVE_TIMEZONE_T=0;                     AC_SUBST([HAVE_TIMEZONE_T])
+  dnl If another module says to replace or to not replace, do that.
+  dnl Otherwise, replace only if someone compiles with -DGNULIB_PORTCHECK;
+  dnl this lets maintainers check for portability.
+  REPLACE_CTIME=GNULIB_PORTCHECK;        AC_SUBST([REPLACE_CTIME])
+  REPLACE_LOCALTIME_R=GNULIB_PORTCHECK;  AC_SUBST([REPLACE_LOCALTIME_R])
+  REPLACE_MKTIME=GNULIB_PORTCHECK;       AC_SUBST([REPLACE_MKTIME])
+  REPLACE_NANOSLEEP=GNULIB_PORTCHECK;    AC_SUBST([REPLACE_NANOSLEEP])
+  REPLACE_STRFTIME=GNULIB_PORTCHECK;     AC_SUBST([REPLACE_STRFTIME])
+  REPLACE_TIMEGM=GNULIB_PORTCHECK;       AC_SUBST([REPLACE_TIMEGM])
+  REPLACE_TZSET=GNULIB_PORTCHECK;        AC_SUBST([REPLACE_TZSET])
+
+  dnl Hack so that the time module doesn't depend on the sys_time module.
+  dnl First, default GNULIB_GETTIMEOFDAY to 0 if sys_time is absent.
+  : ${GNULIB_GETTIMEOFDAY=0};            AC_SUBST([GNULIB_GETTIMEOFDAY])
+  dnl Second, it's OK to not use GNULIB_PORTCHECK for REPLACE_GMTIME
+  dnl and REPLACE_LOCALTIME, as portability to Solaris 2.6 and earlier
+  dnl is no longer a big deal.
+  REPLACE_GMTIME=0;                      AC_SUBST([REPLACE_GMTIME])
+  REPLACE_LOCALTIME=0;                   AC_SUBST([REPLACE_LOCALTIME])
+])
diff --git a/src/grep/m4/unistd-safer.m4 b/src/grep/m4/unistd-safer.m4
new file mode 100644
index 0000000..c205446
--- /dev/null
+++ b/src/grep/m4/unistd-safer.m4
@@ -0,0 +1,10 @@
+#serial 9
+dnl Copyright (C) 2002, 2005-2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_UNISTD_SAFER],
+[
+  AC_CHECK_FUNCS_ONCE([pipe])
+])
diff --git a/src/grep/m4/unistd_h.m4 b/src/grep/m4/unistd_h.m4
new file mode 100644
index 0000000..0ce4ea4
--- /dev/null
+++ b/src/grep/m4/unistd_h.m4
@@ -0,0 +1,267 @@
+# unistd_h.m4 serial 89
+dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Simon Josefsson, Bruno Haible.
+
+AC_DEFUN_ONCE([gl_UNISTD_H],
+[
+  dnl Ensure to expand the default settings once only, before all statements
+  dnl that occur in other macros.
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+
+  gl_CHECK_NEXT_HEADERS([unistd.h])
+  if test $ac_cv_header_unistd_h = yes; then
+    HAVE_UNISTD_H=1
+  else
+    HAVE_UNISTD_H=0
+  fi
+  AC_SUBST([HAVE_UNISTD_H])
+
+  dnl Ensure the type pid_t gets defined.
+  AC_REQUIRE([AC_TYPE_PID_T])
+
+  dnl Determine WINDOWS_64_BIT_OFF_T.
+  AC_REQUIRE([gl_TYPE_OFF_T])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+/* Some systems declare various items in the wrong headers.  */
+#if !(defined __GLIBC__ && !defined __UCLIBC__)
+# include <fcntl.h>
+# include <stdio.h>
+# include <stdlib.h>
+# if defined _WIN32 && ! defined __CYGWIN__
+#  include <io.h>
+# endif
+#endif
+    ]], [access chdir chown copy_file_range dup dup2 dup3 environ euidaccess
+    execl execle execlp execv execve execvp execvpe
+    faccessat fchdir
+    fchownat fdatasync fsync ftruncate getcwd getdomainname getdtablesize
+    getentropy getgroups gethostname getlogin getlogin_r getpagesize getpass
+    getusershell setusershell endusershell
+    group_member isatty lchown link linkat lseek pipe pipe2 pread pwrite
+    readlink readlinkat rmdir sethostname sleep symlink symlinkat
+    truncate ttyname_r unlink unlinkat usleep])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+
+  AC_CHECK_DECLS_ONCE([execvpe])
+  if test $ac_cv_have_decl_execvpe = no; then
+    HAVE_DECL_EXECVPE=0
+  fi
+])
+
+# gl_UNISTD_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_UNISTD_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_UNISTD_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_UNISTD_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACCESS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CHDIR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CHOWN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CLOSE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_COPY_FILE_RANGE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP2])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP3])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ENVIRON])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EUIDACCESS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECLE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECLP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECV])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVPE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FACCESSAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHDIR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHOWNAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FDATASYNC])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSYNC])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FTRUNCATE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETCWD])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETDOMAINNAME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETDTABLESIZE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETENTROPY])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETGROUPS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETHOSTNAME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOGIN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOGIN_R])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETOPT_POSIX])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPAGESIZE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPASS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETUSERSHELL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GROUP_MEMBER])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISATTY])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LCHOWN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LINK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LINKAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LSEEK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PIPE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PIPE2])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PREAD])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PWRITE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READ])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READLINK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READLINKAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RMDIR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETHOSTNAME])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SLEEP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYMLINK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYMLINKAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TRUNCATE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TTYNAME_R])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_GETOPT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_NONBLOCKING])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_SIGPIPE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLINK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLINKAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_USLEEP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WRITE])
+    dnl Support Microsoft deprecated alias function names by default.
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ACCESS], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CHDIR], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CLOSE], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_DUP], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_DUP2], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECL], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECLE], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECLP], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECV], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVE], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVP], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVPE], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GETCWD], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GETPID], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ISATTY], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_LSEEK], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_READ], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_RMDIR], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_SWAB], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_UNLINK], [1])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_WRITE], [1])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_UNISTD_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_UNISTD_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_CHOWN=1;           AC_SUBST([HAVE_CHOWN])
+  HAVE_COPY_FILE_RANGE=1; AC_SUBST([HAVE_COPY_FILE_RANGE])
+  HAVE_DUP3=1;            AC_SUBST([HAVE_DUP3])
+  HAVE_EUIDACCESS=1;      AC_SUBST([HAVE_EUIDACCESS])
+  HAVE_EXECVPE=1;         AC_SUBST([HAVE_EXECVPE])
+  HAVE_FACCESSAT=1;       AC_SUBST([HAVE_FACCESSAT])
+  HAVE_FCHDIR=1;          AC_SUBST([HAVE_FCHDIR])
+  HAVE_FCHOWNAT=1;        AC_SUBST([HAVE_FCHOWNAT])
+  HAVE_FDATASYNC=1;       AC_SUBST([HAVE_FDATASYNC])
+  HAVE_FSYNC=1;           AC_SUBST([HAVE_FSYNC])
+  HAVE_FTRUNCATE=1;       AC_SUBST([HAVE_FTRUNCATE])
+  HAVE_GETDTABLESIZE=1;   AC_SUBST([HAVE_GETDTABLESIZE])
+  HAVE_GETENTROPY=1;      AC_SUBST([HAVE_GETENTROPY])
+  HAVE_GETGROUPS=1;       AC_SUBST([HAVE_GETGROUPS])
+  HAVE_GETHOSTNAME=1;     AC_SUBST([HAVE_GETHOSTNAME])
+  HAVE_GETLOGIN=1;        AC_SUBST([HAVE_GETLOGIN])
+  HAVE_GETPAGESIZE=1;     AC_SUBST([HAVE_GETPAGESIZE])
+  HAVE_GETPASS=1;         AC_SUBST([HAVE_GETPASS])
+  HAVE_GROUP_MEMBER=1;    AC_SUBST([HAVE_GROUP_MEMBER])
+  HAVE_LCHOWN=1;          AC_SUBST([HAVE_LCHOWN])
+  HAVE_LINK=1;            AC_SUBST([HAVE_LINK])
+  HAVE_LINKAT=1;          AC_SUBST([HAVE_LINKAT])
+  HAVE_PIPE=1;            AC_SUBST([HAVE_PIPE])
+  HAVE_PIPE2=1;           AC_SUBST([HAVE_PIPE2])
+  HAVE_PREAD=1;           AC_SUBST([HAVE_PREAD])
+  HAVE_PWRITE=1;          AC_SUBST([HAVE_PWRITE])
+  HAVE_READLINK=1;        AC_SUBST([HAVE_READLINK])
+  HAVE_READLINKAT=1;      AC_SUBST([HAVE_READLINKAT])
+  HAVE_SETHOSTNAME=1;     AC_SUBST([HAVE_SETHOSTNAME])
+  HAVE_SLEEP=1;           AC_SUBST([HAVE_SLEEP])
+  HAVE_SYMLINK=1;         AC_SUBST([HAVE_SYMLINK])
+  HAVE_SYMLINKAT=1;       AC_SUBST([HAVE_SYMLINKAT])
+  HAVE_UNLINKAT=1;        AC_SUBST([HAVE_UNLINKAT])
+  HAVE_USLEEP=1;          AC_SUBST([HAVE_USLEEP])
+  HAVE_DECL_ENVIRON=1;    AC_SUBST([HAVE_DECL_ENVIRON])
+  HAVE_DECL_EXECVPE=1;    AC_SUBST([HAVE_DECL_EXECVPE])
+  HAVE_DECL_FCHDIR=1;     AC_SUBST([HAVE_DECL_FCHDIR])
+  HAVE_DECL_FDATASYNC=1;  AC_SUBST([HAVE_DECL_FDATASYNC])
+  HAVE_DECL_GETDOMAINNAME=1; AC_SUBST([HAVE_DECL_GETDOMAINNAME])
+  HAVE_DECL_GETLOGIN=1;   AC_SUBST([HAVE_DECL_GETLOGIN])
+  HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R])
+  HAVE_DECL_GETPAGESIZE=1; AC_SUBST([HAVE_DECL_GETPAGESIZE])
+  HAVE_DECL_GETUSERSHELL=1; AC_SUBST([HAVE_DECL_GETUSERSHELL])
+  HAVE_DECL_SETHOSTNAME=1; AC_SUBST([HAVE_DECL_SETHOSTNAME])
+  HAVE_DECL_TRUNCATE=1;   AC_SUBST([HAVE_DECL_TRUNCATE])
+  HAVE_DECL_TTYNAME_R=1;  AC_SUBST([HAVE_DECL_TTYNAME_R])
+  HAVE_OS_H=0;            AC_SUBST([HAVE_OS_H])
+  HAVE_SYS_PARAM_H=0;     AC_SUBST([HAVE_SYS_PARAM_H])
+  REPLACE_ACCESS=0;       AC_SUBST([REPLACE_ACCESS])
+  REPLACE_CHOWN=0;        AC_SUBST([REPLACE_CHOWN])
+  REPLACE_CLOSE=0;        AC_SUBST([REPLACE_CLOSE])
+  REPLACE_DUP=0;          AC_SUBST([REPLACE_DUP])
+  REPLACE_DUP2=0;         AC_SUBST([REPLACE_DUP2])
+  REPLACE_EXECL=0;        AC_SUBST([REPLACE_EXECL])
+  REPLACE_EXECLE=0;       AC_SUBST([REPLACE_EXECLE])
+  REPLACE_EXECLP=0;       AC_SUBST([REPLACE_EXECLP])
+  REPLACE_EXECV=0;        AC_SUBST([REPLACE_EXECV])
+  REPLACE_EXECVE=0;       AC_SUBST([REPLACE_EXECVE])
+  REPLACE_EXECVP=0;       AC_SUBST([REPLACE_EXECVP])
+  REPLACE_EXECVPE=0;      AC_SUBST([REPLACE_EXECVPE])
+  REPLACE_FACCESSAT=0;    AC_SUBST([REPLACE_FACCESSAT])
+  REPLACE_FCHOWNAT=0;     AC_SUBST([REPLACE_FCHOWNAT])
+  REPLACE_FTRUNCATE=0;    AC_SUBST([REPLACE_FTRUNCATE])
+  REPLACE_GETCWD=0;       AC_SUBST([REPLACE_GETCWD])
+  REPLACE_GETDOMAINNAME=0; AC_SUBST([REPLACE_GETDOMAINNAME])
+  REPLACE_GETDTABLESIZE=0; AC_SUBST([REPLACE_GETDTABLESIZE])
+  REPLACE_GETLOGIN_R=0;   AC_SUBST([REPLACE_GETLOGIN_R])
+  REPLACE_GETGROUPS=0;    AC_SUBST([REPLACE_GETGROUPS])
+  REPLACE_GETPAGESIZE=0;  AC_SUBST([REPLACE_GETPAGESIZE])
+  REPLACE_GETPASS=0;      AC_SUBST([REPLACE_GETPASS])
+  REPLACE_ISATTY=0;       AC_SUBST([REPLACE_ISATTY])
+  REPLACE_LCHOWN=0;       AC_SUBST([REPLACE_LCHOWN])
+  REPLACE_LINK=0;         AC_SUBST([REPLACE_LINK])
+  REPLACE_LINKAT=0;       AC_SUBST([REPLACE_LINKAT])
+  REPLACE_LSEEK=0;        AC_SUBST([REPLACE_LSEEK])
+  REPLACE_PREAD=0;        AC_SUBST([REPLACE_PREAD])
+  REPLACE_PWRITE=0;       AC_SUBST([REPLACE_PWRITE])
+  REPLACE_READ=0;         AC_SUBST([REPLACE_READ])
+  REPLACE_READLINK=0;     AC_SUBST([REPLACE_READLINK])
+  REPLACE_READLINKAT=0;   AC_SUBST([REPLACE_READLINKAT])
+  REPLACE_RMDIR=0;        AC_SUBST([REPLACE_RMDIR])
+  REPLACE_SLEEP=0;        AC_SUBST([REPLACE_SLEEP])
+  REPLACE_SYMLINK=0;      AC_SUBST([REPLACE_SYMLINK])
+  REPLACE_SYMLINKAT=0;    AC_SUBST([REPLACE_SYMLINKAT])
+  REPLACE_TRUNCATE=0;     AC_SUBST([REPLACE_TRUNCATE])
+  REPLACE_TTYNAME_R=0;    AC_SUBST([REPLACE_TTYNAME_R])
+  REPLACE_UNLINK=0;       AC_SUBST([REPLACE_UNLINK])
+  REPLACE_UNLINKAT=0;     AC_SUBST([REPLACE_UNLINKAT])
+  REPLACE_USLEEP=0;       AC_SUBST([REPLACE_USLEEP])
+  REPLACE_WRITE=0;        AC_SUBST([REPLACE_WRITE])
+  UNISTD_H_HAVE_SYS_RANDOM_H=0; AC_SUBST([UNISTD_H_HAVE_SYS_RANDOM_H])
+  UNISTD_H_HAVE_WINSOCK2_H=0; AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H])
+  UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
+                           AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS])
+])
diff --git a/src/grep/m4/unlocked-io.m4 b/src/grep/m4/unlocked-io.m4
new file mode 100644
index 0000000..b689020
--- /dev/null
+++ b/src/grep/m4/unlocked-io.m4
@@ -0,0 +1,36 @@
+# unlocked-io.m4 serial 16
+
+# Copyright (C) 1998-2006, 2009-2021 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl From Jim Meyering.
+dnl
+dnl See if the glibc *_unlocked I/O macros or functions are available.
+dnl Use only those *_unlocked macros or functions that are declared
+dnl (because some of them were declared in Solaris 2.5.1 but were removed
+dnl in Solaris 2.6, whereas we want binaries built on Solaris 2.5.1 to run
+dnl on Solaris 2.6).
+
+AC_DEFUN([gl_FUNC_GLIBC_UNLOCKED_IO],
+[
+  dnl Persuade glibc and Solaris <stdio.h> to declare
+  dnl fgets_unlocked(), fputs_unlocked() etc.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  AC_CHECK_DECLS_ONCE([clearerr_unlocked])
+  AC_CHECK_DECLS_ONCE([feof_unlocked])
+  AC_CHECK_DECLS_ONCE([ferror_unlocked])
+  AC_CHECK_DECLS_ONCE([fflush_unlocked])
+  AC_CHECK_DECLS_ONCE([fgets_unlocked])
+  AC_CHECK_DECLS_ONCE([fputc_unlocked])
+  AC_CHECK_DECLS_ONCE([fputs_unlocked])
+  AC_CHECK_DECLS_ONCE([fread_unlocked])
+  AC_CHECK_DECLS_ONCE([fwrite_unlocked])
+  AC_CHECK_DECLS_ONCE([getc_unlocked])
+  AC_CHECK_DECLS_ONCE([getchar_unlocked])
+  AC_CHECK_DECLS_ONCE([putc_unlocked])
+  AC_CHECK_DECLS_ONCE([putchar_unlocked])
+])
diff --git a/src/grep/m4/vasnprintf.m4 b/src/grep/m4/vasnprintf.m4
new file mode 100644
index 0000000..483bba9
--- /dev/null
+++ b/src/grep/m4/vasnprintf.m4
@@ -0,0 +1,298 @@
+# vasnprintf.m4 serial 38
+dnl Copyright (C) 2002-2004, 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_VASNPRINTF],
+[
+  AC_CHECK_FUNCS_ONCE([vasnprintf])
+  if test $ac_cv_func_vasnprintf = no; then
+    gl_REPLACE_VASNPRINTF
+  fi
+])
+
+AC_DEFUN([gl_REPLACE_VASNPRINTF],
+[
+  AC_CHECK_FUNCS_ONCE([vasnprintf])
+  AC_LIBOBJ([vasnprintf])
+  AC_LIBOBJ([printf-args])
+  AC_LIBOBJ([printf-parse])
+  AC_LIBOBJ([asnprintf])
+  if test $ac_cv_func_vasnprintf = yes; then
+    AC_DEFINE([REPLACE_VASNPRINTF], [1],
+      [Define if vasnprintf exists but is overridden by gnulib.])
+  fi
+  gl_PREREQ_PRINTF_ARGS
+  gl_PREREQ_PRINTF_PARSE
+  gl_PREREQ_VASNPRINTF
+  gl_PREREQ_ASNPRINTF
+])
+
+# Prerequisites of lib/printf-args.h, lib/printf-args.c.
+AC_DEFUN([gl_PREREQ_PRINTF_ARGS],
+[
+  AC_REQUIRE([gt_TYPE_WCHAR_T])
+  AC_REQUIRE([gt_TYPE_WINT_T])
+])
+
+# Prerequisites of lib/printf-parse.h, lib/printf-parse.c.
+AC_DEFUN([gl_PREREQ_PRINTF_PARSE],
+[
+  AC_REQUIRE([gl_FEATURES_H])
+  AC_REQUIRE([gt_TYPE_WCHAR_T])
+  AC_REQUIRE([gt_TYPE_WINT_T])
+  AC_REQUIRE([AC_TYPE_SIZE_T])
+  AC_CHECK_TYPE([ptrdiff_t], ,
+    [AC_DEFINE([ptrdiff_t], [long],
+       [Define as the type of the result of subtracting two pointers, if the system doesn't define it.])
+    ])
+  AC_REQUIRE([gt_AC_TYPE_INTMAX_T])
+])
+
+# Prerequisites of lib/vasnprintf.c.
+AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF],
+[
+  AC_REQUIRE([AC_FUNC_ALLOCA])
+  AC_REQUIRE([gt_TYPE_WCHAR_T])
+  AC_REQUIRE([gt_TYPE_WINT_T])
+  AC_CHECK_FUNCS([snprintf strnlen wcslen wcsnlen mbrtowc wcrtomb])
+  dnl Use the _snprintf function only if it is declared (because on NetBSD it
+  dnl is defined as a weak alias of snprintf; we prefer to use the latter).
+  AC_CHECK_DECLS([_snprintf], , , [[#include <stdio.h>]])
+  dnl Knowing DBL_EXPBIT0_WORD and DBL_EXPBIT0_BIT enables an optimization
+  dnl in the code for NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_DOUBLE.
+  AC_REQUIRE([gl_DOUBLE_EXPONENT_LOCATION])
+  dnl We can avoid a lot of code by assuming that snprintf's return value
+  dnl conforms to ISO C99. So check that.
+  AC_REQUIRE([gl_SNPRINTF_RETVAL_C99])
+  case "$gl_cv_func_snprintf_retval_c99" in
+    *yes)
+      AC_DEFINE([HAVE_SNPRINTF_RETVAL_C99], [1],
+        [Define if the return value of the snprintf function is the number of
+         of bytes (excluding the terminating NUL) that would have been produced
+         if the buffer had been large enough.])
+      ;;
+  esac
+  dnl Additionally, the use of %n can be eliminated by assuming that snprintf
+  dnl always produces NUL-terminated strings (no truncation).
+  AC_REQUIRE([gl_SNPRINTF_TRUNCATION_C99])
+  case "$gl_cv_func_snprintf_truncation_c99" in
+    *yes)
+      AC_DEFINE([HAVE_SNPRINTF_TRUNCATION_C99], [1],
+        [Define if the string produced by the snprintf function is always NUL
+         terminated.])
+      ;;
+  esac
+])
+
+# Extra prerequisites of lib/vasnprintf.c for supporting 'long double'
+# arguments.
+AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF_LONG_DOUBLE],
+[
+  AC_REQUIRE([gl_PRINTF_LONG_DOUBLE])
+  case "$gl_cv_func_printf_long_double" in
+    *yes)
+      ;;
+    *)
+      AC_DEFINE([NEED_PRINTF_LONG_DOUBLE], [1],
+        [Define if the vasnprintf implementation needs special code for
+         'long double' arguments.])
+      ;;
+  esac
+])
+
+# Extra prerequisites of lib/vasnprintf.c for supporting infinite 'double'
+# arguments.
+AC_DEFUN([gl_PREREQ_VASNPRINTF_INFINITE_DOUBLE],
+[
+  AC_REQUIRE([gl_PRINTF_INFINITE])
+  case "$gl_cv_func_printf_infinite" in
+    *yes)
+      ;;
+    *)
+      AC_DEFINE([NEED_PRINTF_INFINITE_DOUBLE], [1],
+        [Define if the vasnprintf implementation needs special code for
+         infinite 'double' arguments.])
+      ;;
+  esac
+])
+
+# Extra prerequisites of lib/vasnprintf.c for supporting infinite 'long double'
+# arguments.
+AC_DEFUN([gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE],
+[
+  AC_REQUIRE([gl_PRINTF_INFINITE_LONG_DOUBLE])
+  dnl There is no need to set NEED_PRINTF_INFINITE_LONG_DOUBLE if
+  dnl NEED_PRINTF_LONG_DOUBLE is already set.
+  AC_REQUIRE([gl_PREREQ_VASNPRINTF_LONG_DOUBLE])
+  case "$gl_cv_func_printf_long_double" in
+    *yes)
+      case "$gl_cv_func_printf_infinite_long_double" in
+        *yes)
+          ;;
+        *)
+          AC_DEFINE([NEED_PRINTF_INFINITE_LONG_DOUBLE], [1],
+            [Define if the vasnprintf implementation needs special code for
+             infinite 'long double' arguments.])
+          ;;
+      esac
+      ;;
+  esac
+])
+
+# Extra prerequisites of lib/vasnprintf.c for supporting the 'a' directive.
+AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_A],
+[
+  AC_REQUIRE([gl_PRINTF_DIRECTIVE_A])
+  case "$gl_cv_func_printf_directive_a" in
+    *yes)
+      ;;
+    *)
+      AC_DEFINE([NEED_PRINTF_DIRECTIVE_A], [1],
+        [Define if the vasnprintf implementation needs special code for
+         the 'a' and 'A' directives.])
+      AC_CHECK_FUNCS([nl_langinfo])
+      ;;
+  esac
+])
+
+# Extra prerequisites of lib/vasnprintf.c for supporting the 'F' directive.
+AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_F],
+[
+  AC_REQUIRE([gl_PRINTF_DIRECTIVE_F])
+  case "$gl_cv_func_printf_directive_f" in
+    *yes)
+      ;;
+    *)
+      AC_DEFINE([NEED_PRINTF_DIRECTIVE_F], [1],
+        [Define if the vasnprintf implementation needs special code for
+         the 'F' directive.])
+      ;;
+  esac
+])
+
+# Extra prerequisites of lib/vasnprintf.c for supporting the 'ls' directive.
+AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_LS],
+[
+  AC_REQUIRE([gl_PRINTF_DIRECTIVE_LS])
+  case "$gl_cv_func_printf_directive_ls" in
+    *yes)
+      ;;
+    *)
+      AC_DEFINE([NEED_PRINTF_DIRECTIVE_LS], [1],
+        [Define if the vasnprintf implementation needs special code for
+         the 'ls' directive.])
+      ;;
+  esac
+])
+
+# Extra prerequisites of lib/vasnprintf.c for supporting the ' flag.
+AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_GROUPING],
+[
+  AC_REQUIRE([gl_PRINTF_FLAG_GROUPING])
+  case "$gl_cv_func_printf_flag_grouping" in
+    *yes)
+      ;;
+    *)
+      AC_DEFINE([NEED_PRINTF_FLAG_GROUPING], [1],
+        [Define if the vasnprintf implementation needs special code for the
+         ' flag.])
+      ;;
+  esac
+])
+
+# Extra prerequisites of lib/vasnprintf.c for supporting the '-' flag.
+AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_LEFTADJUST],
+[
+  AC_REQUIRE([gl_PRINTF_FLAG_LEFTADJUST])
+  case "$gl_cv_func_printf_flag_leftadjust" in
+    *yes)
+      ;;
+    *)
+      AC_DEFINE([NEED_PRINTF_FLAG_LEFTADJUST], [1],
+        [Define if the vasnprintf implementation needs special code for the
+         '-' flag.])
+      ;;
+  esac
+])
+
+# Extra prerequisites of lib/vasnprintf.c for supporting the 0 flag.
+AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_ZERO],
+[
+  AC_REQUIRE([gl_PRINTF_FLAG_ZERO])
+  case "$gl_cv_func_printf_flag_zero" in
+    *yes)
+      ;;
+    *)
+      AC_DEFINE([NEED_PRINTF_FLAG_ZERO], [1],
+        [Define if the vasnprintf implementation needs special code for the
+         0 flag.])
+      ;;
+  esac
+])
+
+# Extra prerequisites of lib/vasnprintf.c for supporting large precisions.
+AC_DEFUN([gl_PREREQ_VASNPRINTF_PRECISION],
+[
+  AC_REQUIRE([gl_PRINTF_PRECISION])
+  case "$gl_cv_func_printf_precision" in
+    *yes)
+      ;;
+    *)
+      AC_DEFINE([NEED_PRINTF_UNBOUNDED_PRECISION], [1],
+        [Define if the vasnprintf implementation needs special code for
+         supporting large precisions without arbitrary bounds.])
+      AC_DEFINE([NEED_PRINTF_DOUBLE], [1],
+        [Define if the vasnprintf implementation needs special code for
+         'double' arguments.])
+      AC_DEFINE([NEED_PRINTF_LONG_DOUBLE], [1],
+        [Define if the vasnprintf implementation needs special code for
+         'long double' arguments.])
+      ;;
+  esac
+])
+
+# Extra prerequisites of lib/vasnprintf.c for surviving out-of-memory
+# conditions.
+AC_DEFUN([gl_PREREQ_VASNPRINTF_ENOMEM],
+[
+  AC_REQUIRE([gl_PRINTF_ENOMEM])
+  case "$gl_cv_func_printf_enomem" in
+    *yes)
+      ;;
+    *)
+      AC_DEFINE([NEED_PRINTF_ENOMEM], [1],
+        [Define if the vasnprintf implementation needs special code for
+         surviving out-of-memory conditions.])
+      AC_DEFINE([NEED_PRINTF_DOUBLE], [1],
+        [Define if the vasnprintf implementation needs special code for
+         'double' arguments.])
+      AC_DEFINE([NEED_PRINTF_LONG_DOUBLE], [1],
+        [Define if the vasnprintf implementation needs special code for
+         'long double' arguments.])
+      ;;
+  esac
+])
+
+# Prerequisites of lib/vasnprintf.c including all extras for POSIX compliance.
+AC_DEFUN([gl_PREREQ_VASNPRINTF_WITH_EXTRAS],
+[
+  AC_REQUIRE([gl_PREREQ_VASNPRINTF])
+  gl_PREREQ_VASNPRINTF_LONG_DOUBLE
+  gl_PREREQ_VASNPRINTF_INFINITE_DOUBLE
+  gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE
+  gl_PREREQ_VASNPRINTF_DIRECTIVE_A
+  gl_PREREQ_VASNPRINTF_DIRECTIVE_F
+  gl_PREREQ_VASNPRINTF_DIRECTIVE_LS
+  gl_PREREQ_VASNPRINTF_FLAG_GROUPING
+  gl_PREREQ_VASNPRINTF_FLAG_LEFTADJUST
+  gl_PREREQ_VASNPRINTF_FLAG_ZERO
+  gl_PREREQ_VASNPRINTF_PRECISION
+  gl_PREREQ_VASNPRINTF_ENOMEM
+])
+
+# Prerequisites of lib/asnprintf.c.
+AC_DEFUN([gl_PREREQ_ASNPRINTF],
+[
+])
diff --git a/src/grep/m4/version-etc.m4 b/src/grep/m4/version-etc.m4
new file mode 100644
index 0000000..ca7fd24
--- /dev/null
+++ b/src/grep/m4/version-etc.m4
@@ -0,0 +1,33 @@
+# version-etc.m4 serial 1
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl $1 - configure flag and define name
+dnl $2 - human readable description
+m4_define([gl_VERSION_ETC_FLAG],
+[dnl
+  AC_ARG_WITH([$1], [AS_HELP_STRING([--with-$1], [$2])],
+    [dnl
+      case $withval in
+        yes|no) ;;
+        *) AC_DEFINE_UNQUOTED(AS_TR_CPP([PACKAGE_$1]), ["$withval"], [$2]) ;;
+      esac
+    ])
+])
+
+AC_DEFUN([gl_VERSION_ETC],
+[dnl
+  gl_VERSION_ETC_FLAG([packager],
+                      [String identifying the packager of this software])
+  gl_VERSION_ETC_FLAG([packager-version],
+                      [Packager-specific version information])
+  gl_VERSION_ETC_FLAG([packager-bug-reports],
+                      [Packager info for bug reports (URL/e-mail/...)])
+  if test "X$with_packager" = "X" && \
+     test "X$with_packager_version$with_packager_bug_reports" != "X"
+  then
+    AC_MSG_ERROR([The --with-packager-{bug-reports,version} options require --with-packager])
+  fi
+])
diff --git a/src/grep/m4/visibility.m4 b/src/grep/m4/visibility.m4
new file mode 100644
index 0000000..d161bd7
--- /dev/null
+++ b/src/grep/m4/visibility.m4
@@ -0,0 +1,82 @@
+# visibility.m4 serial 8
+dnl Copyright (C) 2005, 2008, 2010-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl Tests whether the compiler supports the command-line option
+dnl -fvisibility=hidden and the function and variable attributes
+dnl __attribute__((__visibility__("hidden"))) and
+dnl __attribute__((__visibility__("default"))).
+dnl Does *not* test for __visibility__("protected") - which has tricky
+dnl semantics (see the 'vismain' test in glibc) and does not exist e.g. on
+dnl Mac OS X.
+dnl Does *not* test for __visibility__("internal") - which has processor
+dnl dependent semantics.
+dnl Does *not* test for #pragma GCC visibility push(hidden) - which is
+dnl "really only recommended for legacy code".
+dnl Set the variable CFLAG_VISIBILITY.
+dnl Defines and sets the variable HAVE_VISIBILITY.
+
+AC_DEFUN([gl_VISIBILITY],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  CFLAG_VISIBILITY=
+  HAVE_VISIBILITY=0
+  if test -n "$GCC"; then
+    dnl First, check whether -Werror can be added to the command line, or
+    dnl whether it leads to an error because of some other option that the
+    dnl user has put into $CC $CFLAGS $CPPFLAGS.
+    AC_CACHE_CHECK([whether the -Werror option is usable],
+      [gl_cv_cc_vis_werror],
+      [gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -Werror"
+       AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([[]], [[]])],
+         [gl_cv_cc_vis_werror=yes],
+         [gl_cv_cc_vis_werror=no])
+       CFLAGS="$gl_save_CFLAGS"
+      ])
+    dnl Now check whether visibility declarations are supported.
+    AC_CACHE_CHECK([for simple visibility declarations],
+      [gl_cv_cc_visibility],
+      [gl_save_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS -fvisibility=hidden"
+       dnl We use the option -Werror and a function dummyfunc, because on some
+       dnl platforms (Cygwin 1.7) the use of -fvisibility triggers a warning
+       dnl "visibility attribute not supported in this configuration; ignored"
+       dnl at the first function definition in every compilation unit, and we
+       dnl don't want to use the option in this case.
+       if test $gl_cv_cc_vis_werror = yes; then
+         CFLAGS="$CFLAGS -Werror"
+       fi
+       AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[extern __attribute__((__visibility__("hidden"))) int hiddenvar;
+              extern __attribute__((__visibility__("default"))) int exportedvar;
+              extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void);
+              extern __attribute__((__visibility__("default"))) int exportedfunc (void);
+              void dummyfunc (void);
+              int hiddenvar;
+              int exportedvar;
+              int hiddenfunc (void) { return 51; }
+              int exportedfunc (void) { return 1225736919; }
+              void dummyfunc (void) {}
+            ]],
+            [[]])],
+         [gl_cv_cc_visibility=yes],
+         [gl_cv_cc_visibility=no])
+       CFLAGS="$gl_save_CFLAGS"
+      ])
+    if test $gl_cv_cc_visibility = yes; then
+      CFLAG_VISIBILITY="-fvisibility=hidden"
+      HAVE_VISIBILITY=1
+    fi
+  fi
+  AC_SUBST([CFLAG_VISIBILITY])
+  AC_SUBST([HAVE_VISIBILITY])
+  AC_DEFINE_UNQUOTED([HAVE_VISIBILITY], [$HAVE_VISIBILITY],
+    [Define to 1 or 0, depending whether the compiler supports simple visibility declarations.])
+])
diff --git a/src/grep/m4/warn-on-use.m4 b/src/grep/m4/warn-on-use.m4
new file mode 100644
index 0000000..04edfe8
--- /dev/null
+++ b/src/grep/m4/warn-on-use.m4
@@ -0,0 +1,49 @@
+# warn-on-use.m4 serial 9
+dnl Copyright (C) 2010-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# gl_WARN_ON_USE_PREPARE(INCLUDES, NAMES)
+# ---------------------------------------
+# If the module 'posixcheck' is in use:
+#
+# For each whitespace-separated element in the list of NAMES, define
+# HAVE_RAW_DECL_name if the function has a declaration among INCLUDES
+# even after being undefined as a macro.
+#
+# See warn-on-use.h for some hints on how to poison function names, as
+# well as ideas on poisoning global variables and macros.  NAMES may
+# include global variables, but remember that only functions work with
+# _GL_WARN_ON_USE.  Typically, INCLUDES only needs to list a single
+# header, but if the replacement header pulls in other headers because
+# some systems declare functions in the wrong header, then INCLUDES
+# should do likewise.
+#
+# It is generally safe to assume declarations for functions declared
+# in the intersection of C89 and C11 (such as printf) without
+# needing gl_WARN_ON_USE_PREPARE.
+AC_DEFUN([gl_WARN_ON_USE_PREPARE],
+[
+  m4_ifdef([gl_POSIXCHECK],
+    [m4_foreach_w([gl_decl], [$2],
+       [AH_TEMPLATE([HAVE_RAW_DECL_]AS_TR_CPP(m4_defn([gl_decl])),
+         [Define to 1 if ]m4_defn([gl_decl])[ is declared even after
+          undefining macros.])])dnl
+     for gl_func in m4_flatten([$2]); do
+       AS_VAR_PUSHDEF([gl_Symbol], [gl_cv_have_raw_decl_$gl_func])dnl
+       AC_CACHE_CHECK([whether $gl_func is declared without a macro],
+         [gl_Symbol],
+         [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1],
+[[#undef $gl_func
+  (void) $gl_func;]])],
+           [AS_VAR_SET([gl_Symbol], [yes])], [AS_VAR_SET([gl_Symbol], [no])])])
+       AS_VAR_IF([gl_Symbol], [yes],
+         [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$gl_func]), [1])
+          dnl shortcut - if the raw declaration exists, then set a cache
+          dnl variable to allow skipping any later AC_CHECK_DECL efforts
+          eval ac_cv_have_decl_$gl_func=yes])
+       AS_VAR_POPDEF([gl_Symbol])dnl
+     done
+    ])
+])
diff --git a/src/grep/m4/warnings.m4 b/src/grep/m4/warnings.m4
new file mode 100644
index 0000000..9e24d89
--- /dev/null
+++ b/src/grep/m4/warnings.m4
@@ -0,0 +1,110 @@
+# warnings.m4 serial 16
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Simon Josefsson
+
+# gl_AS_VAR_APPEND(VAR, VALUE)
+# ----------------------------
+# Provide the functionality of AS_VAR_APPEND if Autoconf does not have it.
+m4_ifdef([AS_VAR_APPEND],
+[m4_copy([AS_VAR_APPEND], [gl_AS_VAR_APPEND])],
+[m4_define([gl_AS_VAR_APPEND],
+[AS_VAR_SET([$1], [AS_VAR_GET([$1])$2])])])
+
+
+# gl_COMPILER_OPTION_IF(OPTION, [IF-SUPPORTED], [IF-NOT-SUPPORTED],
+#                       [PROGRAM = AC_LANG_PROGRAM()])
+# -----------------------------------------------------------------
+# Check if the compiler supports OPTION when compiling PROGRAM.
+#
+# The effects of this macro depend on the current language (_AC_LANG).
+AC_DEFUN([gl_COMPILER_OPTION_IF],
+[
+AS_VAR_PUSHDEF([gl_Warn], [gl_cv_warn_[]_AC_LANG_ABBREV[]_$1])dnl
+AS_VAR_PUSHDEF([gl_Flags], [_AC_LANG_PREFIX[]FLAGS])dnl
+AS_LITERAL_IF([$1],
+  [m4_pushdef([gl_Positive], m4_bpatsubst([$1], [^-Wno-], [-W]))],
+  [gl_positive="$1"
+case $gl_positive in
+  -Wno-*) gl_positive=-W`expr "X$gl_positive" : 'X-Wno-\(.*\)'` ;;
+esac
+m4_pushdef([gl_Positive], [$gl_positive])])dnl
+AC_CACHE_CHECK([whether _AC_LANG compiler handles $1], [gl_Warn], [
+  gl_save_compiler_FLAGS="$gl_Flags"
+  gl_AS_VAR_APPEND(m4_defn([gl_Flags]),
+    [" $gl_unknown_warnings_are_errors ]m4_defn([gl_Positive])["])
+  AC_LINK_IFELSE([m4_default([$4], [AC_LANG_PROGRAM([[]])])],
+                 [AS_VAR_SET([gl_Warn], [yes])],
+                 [AS_VAR_SET([gl_Warn], [no])])
+  gl_Flags="$gl_save_compiler_FLAGS"
+])
+AS_VAR_IF(gl_Warn, [yes], [$2], [$3])
+m4_popdef([gl_Positive])dnl
+AS_VAR_POPDEF([gl_Flags])dnl
+AS_VAR_POPDEF([gl_Warn])dnl
+])
+
+# gl_UNKNOWN_WARNINGS_ARE_ERRORS
+# ------------------------------
+# Clang doesn't complain about unknown warning options unless one also
+# specifies -Wunknown-warning-option -Werror.  Detect this.
+#
+# The effects of this macro depend on the current language (_AC_LANG).
+AC_DEFUN([gl_UNKNOWN_WARNINGS_ARE_ERRORS],
+[_AC_LANG_DISPATCH([$0], _AC_LANG, $@)])
+
+# Specialization for _AC_LANG = C. This macro can be AC_REQUIREd.
+AC_DEFUN([gl_UNKNOWN_WARNINGS_ARE_ERRORS(C)],
+[
+  AC_LANG_PUSH([C])
+  gl_UNKNOWN_WARNINGS_ARE_ERRORS_IMPL
+  AC_LANG_POP([C])
+])
+
+# Specialization for _AC_LANG = C++. This macro can be AC_REQUIREd.
+AC_DEFUN([gl_UNKNOWN_WARNINGS_ARE_ERRORS(C++)],
+[
+  AC_LANG_PUSH([C++])
+  gl_UNKNOWN_WARNINGS_ARE_ERRORS_IMPL
+  AC_LANG_POP([C++])
+])
+
+# Specialization for _AC_LANG = Objective C. This macro can be AC_REQUIREd.
+AC_DEFUN([gl_UNKNOWN_WARNINGS_ARE_ERRORS(Objective C)],
+[
+  AC_LANG_PUSH([Objective C])
+  gl_UNKNOWN_WARNINGS_ARE_ERRORS_IMPL
+  AC_LANG_POP([Objective C])
+])
+
+AC_DEFUN([gl_UNKNOWN_WARNINGS_ARE_ERRORS_IMPL],
+[gl_COMPILER_OPTION_IF([-Werror -Wunknown-warning-option],
+   [gl_unknown_warnings_are_errors='-Wunknown-warning-option -Werror'],
+   [gl_unknown_warnings_are_errors=])])
+
+# gl_WARN_ADD(OPTION, [VARIABLE = WARN_CFLAGS/WARN_CXXFLAGS],
+#             [PROGRAM = AC_LANG_PROGRAM()])
+# -----------------------------------------------------------
+# Adds parameter to WARN_CFLAGS/WARN_CXXFLAGS if the compiler supports it
+# when compiling PROGRAM.  For example, gl_WARN_ADD([-Wparentheses]).
+#
+# If VARIABLE is a variable name, AC_SUBST it.
+#
+# The effects of this macro depend on the current language (_AC_LANG).
+AC_DEFUN([gl_WARN_ADD],
+[AC_REQUIRE([gl_UNKNOWN_WARNINGS_ARE_ERRORS(]_AC_LANG[)])
+gl_COMPILER_OPTION_IF([$1],
+  [gl_AS_VAR_APPEND(m4_if([$2], [], [[WARN_]_AC_LANG_PREFIX[FLAGS]], [[$2]]), [" $1"])],
+  [],
+  [$3])
+m4_ifval([$2],
+         [AS_LITERAL_IF([$2], [AC_SUBST([$2])])],
+         [AC_SUBST([WARN_]_AC_LANG_PREFIX[FLAGS])])dnl
+])
+
+# Local Variables:
+# mode: autoconf
+# End:
diff --git a/src/grep/m4/wchar_h.m4 b/src/grep/m4/wchar_h.m4
new file mode 100644
index 0000000..818b319
--- /dev/null
+++ b/src/grep/m4/wchar_h.m4
@@ -0,0 +1,255 @@
+dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues.
+
+dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Eric Blake.
+
+# wchar_h.m4 serial 53
+
+AC_DEFUN_ONCE([gl_WCHAR_H],
+[
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+  AC_REQUIRE([gl_WCHAR_H_INLINE_OK])
+  dnl Prepare for creating substitute <wchar.h>.
+  dnl Check for <wchar.h> (missing in Linux uClibc when built without wide
+  dnl character support).
+  dnl <wchar.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_CHECK_NEXT_HEADERS([wchar.h])
+  if test $ac_cv_header_wchar_h = yes; then
+    HAVE_WCHAR_H=1
+  else
+    HAVE_WCHAR_H=0
+  fi
+  AC_SUBST([HAVE_WCHAR_H])
+
+  AC_REQUIRE([gl_FEATURES_H])
+
+  AC_REQUIRE([gt_TYPE_WINT_T])
+  if test $gt_cv_c_wint_t = yes; then
+    HAVE_WINT_T=1
+  else
+    HAVE_WINT_T=0
+  fi
+  AC_SUBST([HAVE_WINT_T])
+
+  AC_REQUIRE([gl_TYPE_WINT_T_PREREQ])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[
+      #include <wchar.h>
+    ]],
+    [btowc wctob mbsinit mbrtowc mbrlen mbsrtowcs mbsnrtowcs wcrtomb
+     wcsrtombs wcsnrtombs wcwidth
+     wmemchr wmemcmp wmemcpy wmemmove wmempcpy wmemset
+     wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat wcscmp
+     wcsncmp wcscasecmp wcsncasecmp wcscoll wcsxfrm wcsdup wcschr wcsrchr
+     wcscspn wcsspn wcspbrk wcsstr wcstok wcswidth wcsftime
+    ])
+
+  AC_REQUIRE([AC_C_RESTRICT])
+
+  AC_CHECK_DECLS([wcsdup], [], [], [[
+      #include <wchar.h>
+    ]])
+  if test $ac_cv_have_decl_wcsdup = no; then
+    HAVE_DECL_WCSDUP=0
+  fi
+])
+
+dnl Check whether <wchar.h> is usable at all.
+AC_DEFUN([gl_WCHAR_H_INLINE_OK],
+[
+  dnl Test whether <wchar.h> suffers due to the transition from '__inline' to
+  dnl 'gnu_inline'. See <https://sourceware.org/bugzilla/show_bug.cgi?id=4022>
+  dnl and <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42440>. In summary,
+  dnl glibc version 2.5 or older, together with gcc version 4.3 or newer and
+  dnl the option -std=c99 or -std=gnu99, leads to a broken <wchar.h>.
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CACHE_CHECK([whether <wchar.h> uses 'inline' correctly],
+    [gl_cv_header_wchar_h_correct_inline],
+    [gl_cv_header_wchar_h_correct_inline=yes
+     case "$host_os" in
+       *-gnu* | gnu*)
+         AC_LANG_CONFTEST([
+           AC_LANG_SOURCE([[
+             #define wcstod renamed_wcstod
+             #include <wchar.h>
+             extern int zero (void);
+             int main () { return zero(); }
+           ]])])
+         dnl Do not rename the object file from conftest.$ac_objext to
+         dnl conftest1.$ac_objext, as this will cause the link to fail on
+         dnl z/OS when using the XPLINK object format (due to duplicate
+         dnl CSECT names). Instead, temporarily redefine $ac_compile so
+         dnl that the object file has the latter name from the start.
+         save_ac_compile="$ac_compile"
+         ac_compile=`echo "$save_ac_compile" | sed s/conftest/conftest1/`
+         if echo '#include "conftest.c"' >conftest1.c \
+            && AC_TRY_EVAL([ac_compile]); then
+           AC_LANG_CONFTEST([
+             AC_LANG_SOURCE([[
+               #define wcstod renamed_wcstod
+               #include <wchar.h>
+               int zero (void) { return 0; }
+             ]])])
+           dnl See note above about renaming object files.
+           ac_compile=`echo "$save_ac_compile" | sed s/conftest/conftest2/`
+           if echo '#include "conftest.c"' >conftest2.c \
+              && AC_TRY_EVAL([ac_compile]); then
+             if $CC -o conftest$ac_exeext $CFLAGS $LDFLAGS conftest1.$ac_objext conftest2.$ac_objext $LIBS >&AS_MESSAGE_LOG_FD 2>&1; then
+               :
+             else
+               gl_cv_header_wchar_h_correct_inline=no
+             fi
+           fi
+         fi
+         ac_compile="$save_ac_compile"
+         rm -f conftest[12].c conftest[12].$ac_objext conftest$ac_exeext
+         ;;
+     esac
+    ])
+  if test $gl_cv_header_wchar_h_correct_inline = no; then
+    AC_MSG_ERROR([<wchar.h> cannot be used with this compiler ($CC $CFLAGS $CPPFLAGS).
+This is a known interoperability problem of glibc <= 2.5 with gcc >= 4.3 in
+C99 mode. You have four options:
+  - Add the flag -fgnu89-inline to CC and reconfigure, or
+  - Fix your include files, using parts of
+    <https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=b037a293a48718af30d706c2e18c929d0e69a621>, or
+  - Use a gcc version older than 4.3, or
+  - Don't use the flags -std=c99 or -std=gnu99.
+Configuration aborted.])
+  fi
+])
+
+# gl_WCHAR_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_WCHAR_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_WCHAR_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_WCHAR_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_WCHAR_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_BTOWC])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCTOB])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSINIT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBRTOWC])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBRLEN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSRTOWCS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSNRTOWCS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCRTOMB])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSRTOMBS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSNRTOMBS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCWIDTH])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WMEMCHR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WMEMCMP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WMEMCPY])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WMEMMOVE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WMEMPCPY])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WMEMSET])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSLEN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSNLEN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCPY])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCPCPY])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSNCPY])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCPNCPY])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSNCAT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCMP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSNCMP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCASECMP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSNCASECMP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCOLL])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSXFRM])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSDUP])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCHR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSRCHR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSCSPN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSSPN])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSPBRK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSSTR])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSTOK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSWIDTH])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCSFTIME])
+    dnl Support Microsoft deprecated alias function names by default.
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_WCSDUP], [1])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_WCHAR_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_WCHAR_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_BTOWC=1;         AC_SUBST([HAVE_BTOWC])
+  HAVE_MBSINIT=1;       AC_SUBST([HAVE_MBSINIT])
+  HAVE_MBRTOWC=1;       AC_SUBST([HAVE_MBRTOWC])
+  HAVE_MBRLEN=1;        AC_SUBST([HAVE_MBRLEN])
+  HAVE_MBSRTOWCS=1;     AC_SUBST([HAVE_MBSRTOWCS])
+  HAVE_MBSNRTOWCS=1;    AC_SUBST([HAVE_MBSNRTOWCS])
+  HAVE_WCRTOMB=1;       AC_SUBST([HAVE_WCRTOMB])
+  HAVE_WCSRTOMBS=1;     AC_SUBST([HAVE_WCSRTOMBS])
+  HAVE_WCSNRTOMBS=1;    AC_SUBST([HAVE_WCSNRTOMBS])
+  HAVE_WMEMCHR=1;       AC_SUBST([HAVE_WMEMCHR])
+  HAVE_WMEMCMP=1;       AC_SUBST([HAVE_WMEMCMP])
+  HAVE_WMEMCPY=1;       AC_SUBST([HAVE_WMEMCPY])
+  HAVE_WMEMMOVE=1;      AC_SUBST([HAVE_WMEMMOVE])
+  HAVE_WMEMPCPY=1;      AC_SUBST([HAVE_WMEMPCPY])
+  HAVE_WMEMSET=1;       AC_SUBST([HAVE_WMEMSET])
+  HAVE_WCSLEN=1;        AC_SUBST([HAVE_WCSLEN])
+  HAVE_WCSNLEN=1;       AC_SUBST([HAVE_WCSNLEN])
+  HAVE_WCSCPY=1;        AC_SUBST([HAVE_WCSCPY])
+  HAVE_WCPCPY=1;        AC_SUBST([HAVE_WCPCPY])
+  HAVE_WCSNCPY=1;       AC_SUBST([HAVE_WCSNCPY])
+  HAVE_WCPNCPY=1;       AC_SUBST([HAVE_WCPNCPY])
+  HAVE_WCSCAT=1;        AC_SUBST([HAVE_WCSCAT])
+  HAVE_WCSNCAT=1;       AC_SUBST([HAVE_WCSNCAT])
+  HAVE_WCSCMP=1;        AC_SUBST([HAVE_WCSCMP])
+  HAVE_WCSNCMP=1;       AC_SUBST([HAVE_WCSNCMP])
+  HAVE_WCSCASECMP=1;    AC_SUBST([HAVE_WCSCASECMP])
+  HAVE_WCSNCASECMP=1;   AC_SUBST([HAVE_WCSNCASECMP])
+  HAVE_WCSCOLL=1;       AC_SUBST([HAVE_WCSCOLL])
+  HAVE_WCSXFRM=1;       AC_SUBST([HAVE_WCSXFRM])
+  HAVE_WCSDUP=1;        AC_SUBST([HAVE_WCSDUP])
+  HAVE_WCSCHR=1;        AC_SUBST([HAVE_WCSCHR])
+  HAVE_WCSRCHR=1;       AC_SUBST([HAVE_WCSRCHR])
+  HAVE_WCSCSPN=1;       AC_SUBST([HAVE_WCSCSPN])
+  HAVE_WCSSPN=1;        AC_SUBST([HAVE_WCSSPN])
+  HAVE_WCSPBRK=1;       AC_SUBST([HAVE_WCSPBRK])
+  HAVE_WCSSTR=1;        AC_SUBST([HAVE_WCSSTR])
+  HAVE_WCSTOK=1;        AC_SUBST([HAVE_WCSTOK])
+  HAVE_WCSWIDTH=1;      AC_SUBST([HAVE_WCSWIDTH])
+  HAVE_WCSFTIME=1;      AC_SUBST([HAVE_WCSFTIME])
+  HAVE_DECL_WCTOB=1;    AC_SUBST([HAVE_DECL_WCTOB])
+  HAVE_DECL_WCSDUP=1;   AC_SUBST([HAVE_DECL_WCSDUP])
+  HAVE_DECL_WCWIDTH=1;  AC_SUBST([HAVE_DECL_WCWIDTH])
+  REPLACE_MBSTATE_T=0;  AC_SUBST([REPLACE_MBSTATE_T])
+  REPLACE_BTOWC=0;      AC_SUBST([REPLACE_BTOWC])
+  REPLACE_WCTOB=0;      AC_SUBST([REPLACE_WCTOB])
+  REPLACE_MBSINIT=0;    AC_SUBST([REPLACE_MBSINIT])
+  REPLACE_MBRTOWC=0;    AC_SUBST([REPLACE_MBRTOWC])
+  REPLACE_MBRLEN=0;     AC_SUBST([REPLACE_MBRLEN])
+  REPLACE_MBSRTOWCS=0;  AC_SUBST([REPLACE_MBSRTOWCS])
+  REPLACE_MBSNRTOWCS=0; AC_SUBST([REPLACE_MBSNRTOWCS])
+  REPLACE_WCRTOMB=0;    AC_SUBST([REPLACE_WCRTOMB])
+  REPLACE_WCSRTOMBS=0;  AC_SUBST([REPLACE_WCSRTOMBS])
+  REPLACE_WCSNRTOMBS=0; AC_SUBST([REPLACE_WCSNRTOMBS])
+  REPLACE_WCWIDTH=0;    AC_SUBST([REPLACE_WCWIDTH])
+  REPLACE_WCSWIDTH=0;   AC_SUBST([REPLACE_WCSWIDTH])
+  REPLACE_WCSFTIME=0;   AC_SUBST([REPLACE_WCSFTIME])
+  REPLACE_WCSTOK=0;     AC_SUBST([REPLACE_WCSTOK])
+])
diff --git a/src/grep/m4/wchar_t.m4 b/src/grep/m4/wchar_t.m4
new file mode 100644
index 0000000..34db10e
--- /dev/null
+++ b/src/grep/m4/wchar_t.m4
@@ -0,0 +1,24 @@
+# wchar_t.m4 serial 4 (gettext-0.18.2)
+dnl Copyright (C) 2002-2003, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+dnl Test whether <stddef.h> has the 'wchar_t' type.
+dnl Prerequisite: AC_PROG_CC
+
+AC_DEFUN([gt_TYPE_WCHAR_T],
+[
+  AC_CACHE_CHECK([for wchar_t], [gt_cv_c_wchar_t],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <stddef.h>
+            wchar_t foo = (wchar_t)'\0';]],
+          [[]])],
+       [gt_cv_c_wchar_t=yes],
+       [gt_cv_c_wchar_t=no])])
+  if test $gt_cv_c_wchar_t = yes; then
+    AC_DEFINE([HAVE_WCHAR_T], [1], [Define if you have the 'wchar_t' type.])
+  fi
+])
diff --git a/src/grep/m4/wcrtomb.m4 b/src/grep/m4/wcrtomb.m4
new file mode 100644
index 0000000..cd96f11
--- /dev/null
+++ b/src/grep/m4/wcrtomb.m4
@@ -0,0 +1,146 @@
+# wcrtomb.m4 serial 17
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_WCRTOMB],
+[
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+
+  AC_REQUIRE([AC_TYPE_MBSTATE_T])
+  gl_MBSTATE_T_BROKEN
+
+  AC_CHECK_FUNCS_ONCE([wcrtomb])
+  if test $ac_cv_func_wcrtomb = no; then
+    HAVE_WCRTOMB=0
+    AC_CHECK_DECLS([wcrtomb],,, [[
+      #include <wchar.h>
+    ]])
+    if test $ac_cv_have_decl_wcrtomb = yes; then
+      dnl On Minix 3.1.8, the system's <wchar.h> declares wcrtomb() although
+      dnl it does not have the function. Avoid a collision with gnulib's
+      dnl replacement.
+      REPLACE_WCRTOMB=1
+    fi
+  else
+    dnl We don't actually need to override wcrtomb when redefining the semantics
+    dnl of the mbstate_t type. Tested on 32-bit AIX.
+    dnl if test $REPLACE_MBSTATE_T = 1; then
+    dnl   REPLACE_WCRTOMB=1
+    dnl fi
+    if test $REPLACE_WCRTOMB = 0; then
+      dnl On Android 4.3, wcrtomb produces wrong characters in the C locale.
+      dnl On AIX 4.3, OSF/1 5.1 and Solaris <= 11.3, wcrtomb (NULL, 0, NULL)
+      dnl sometimes returns 0 instead of 1.
+      AC_REQUIRE([AC_PROG_CC])
+      AC_REQUIRE([gt_LOCALE_FR])
+      AC_REQUIRE([gt_LOCALE_FR_UTF8])
+      AC_REQUIRE([gt_LOCALE_JA])
+      AC_REQUIRE([gt_LOCALE_ZH_CN])
+      AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+      AC_CACHE_CHECK([whether wcrtomb works in the C locale],
+        [gl_cv_func_wcrtomb_works],
+        [AC_RUN_IFELSE(
+           [AC_LANG_SOURCE([[
+#include <string.h>
+#include <stdlib.h>
+#include <wchar.h>
+int main ()
+{
+  mbstate_t state;
+  char out[64];
+  int count;
+  memset (&state, 0, sizeof (state));
+  out[0] = 'x';
+  count = wcrtomb (out, L'a', &state);
+  return !(count == 1 && out[0] == 'a');
+}]])],
+           [gl_cv_func_wcrtomb_works=yes],
+           [gl_cv_func_wcrtomb_works=no],
+           [case "$host_os" in
+                               # Guess no on Android.
+              linux*-android*) gl_cv_func_wcrtomb_works="guessing no";;
+                               # Guess yes otherwise.
+              *)               gl_cv_func_wcrtomb_works="guessing yes";;
+            esac
+           ])
+        ])
+      case "$gl_cv_func_wcrtomb_works" in
+        *yes) ;;
+        *) AC_DEFINE([WCRTOMB_C_LOCALE_BUG], [1],
+             [Define if the wcrtomb function does not work in the C locale.])
+           REPLACE_WCRTOMB=1 ;;
+      esac
+    fi
+    if test $REPLACE_WCRTOMB = 0; then
+      AC_CACHE_CHECK([whether wcrtomb return value is correct],
+        [gl_cv_func_wcrtomb_retval],
+        [
+          dnl Initial guess, used when cross-compiling or when no suitable locale
+          dnl is present.
+changequote(,)dnl
+          case "$host_os" in
+            # Guess no on AIX 4, OSF/1, Solaris, native Windows.
+            aix4* | osf* | solaris* | mingw*) gl_cv_func_wcrtomb_retval="guessing no" ;;
+            # Guess yes otherwise.
+            *)                                gl_cv_func_wcrtomb_retval="guessing yes" ;;
+          esac
+changequote([,])dnl
+          if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
+            AC_RUN_IFELSE(
+              [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+#include <stdlib.h>
+int main ()
+{
+  int result = 0;
+  if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+    {
+      if (wcrtomb (NULL, 0, NULL) != 1)
+        result |= 1;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+    {
+      if (wcrtomb (NULL, 0, NULL) != 1)
+        result |= 2;
+      {
+        wchar_t wc = (wchar_t) 0xBADFACE;
+        if (mbtowc (&wc, "\303\274", 2) == 2)
+          if (wcrtomb (NULL, wc, NULL) != 1)
+            result |= 2;
+      }
+    }
+  if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+    {
+      if (wcrtomb (NULL, 0, NULL) != 1)
+        result |= 4;
+    }
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      if (wcrtomb (NULL, 0, NULL) != 1)
+        result |= 8;
+    }
+  return result;
+}]])],
+              [gl_cv_func_wcrtomb_retval=yes],
+              [gl_cv_func_wcrtomb_retval=no],
+              [:])
+          fi
+        ])
+      case "$gl_cv_func_wcrtomb_retval" in
+        *yes) ;;
+        *) AC_DEFINE([WCRTOMB_RETVAL_BUG], [1],
+             [Define if the wcrtomb function has an incorrect return value.])
+           REPLACE_WCRTOMB=1 ;;
+      esac
+    fi
+  fi
+])
+
+# Prerequisites of lib/wcrtomb.c.
+AC_DEFUN([gl_PREREQ_WCRTOMB], [
+  :
+])
diff --git a/src/grep/m4/wctob.m4 b/src/grep/m4/wctob.m4
new file mode 100644
index 0000000..159b609
--- /dev/null
+++ b/src/grep/m4/wctob.m4
@@ -0,0 +1,109 @@
+# wctob.m4 serial 13
+dnl Copyright (C) 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_WCTOB],
+[
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+
+  AC_CHECK_FUNCS_ONCE([wctob])
+  if test $ac_cv_func_wctob = no; then
+    HAVE_WCTOB=0
+    HAVE_DECL_WCTOB=0
+  else
+    HAVE_WCTOB=1
+
+    dnl Solaris 9 has the wctob() function but it does not work.
+    dnl Cygwin 1.7.2 has the wctob() function but it clobbers caller-owned
+    dnl registers, see <https://cygwin.com/ml/cygwin/2010-05/msg00015.html>.
+    AC_REQUIRE([AC_PROG_CC])
+    AC_REQUIRE([gt_LOCALE_FR])
+    AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+    AC_CACHE_CHECK([whether wctob works],
+      [gl_cv_func_wctob_works],
+      [
+        dnl Initial guess, used when cross-compiling or when no suitable locale
+        dnl is present.
+changequote(,)dnl
+        case "$host_os" in
+            # Guess no on Solaris <= 9 and Cygwin.
+          solaris2.[1-9] | solaris2.[1-9].* | cygwin*)
+            gl_cv_func_wctob_works="guessing no" ;;
+            # Guess no on native Windows.
+          mingw*)
+            gl_cv_func_wctob_works="guessing no" ;;
+            # Guess yes otherwise.
+          *) gl_cv_func_wctob_works="guessing yes" ;;
+        esac
+changequote([,])dnl
+        case "$host_os" in
+          cygwin*)
+            AC_RUN_IFELSE(
+              [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <wchar.h>
+
+register long global __asm__ ("%ebx");
+
+int main ()
+{
+  setlocale (LC_ALL, "en_US.UTF-8");
+
+  global = 0x12345678;
+  if (wctob (0x00FC) != -1)
+    return 1;
+  if (global != 0x12345678)
+    return 2;
+  return 0;
+}]])],
+              [:],
+              [gl_cv_func_wctob_works=no],
+              [:])
+            ;;
+        esac
+        if test "$gl_cv_func_wctob_works" != no && test $LOCALE_FR != none; then
+          AC_RUN_IFELSE(
+            [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <stdlib.h>
+#include <wchar.h>
+int main ()
+{
+  if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+    {
+      wchar_t wc;
+
+      if (mbtowc (&wc, "\374", 1) == 1)
+        if (wctob (wc) != (unsigned char) '\374')
+          return 1;
+    }
+  return 0;
+}]])],
+            [gl_cv_func_wctob_works=yes],
+            [gl_cv_func_wctob_works=no],
+            [:])
+        fi
+      ])
+    case "$gl_cv_func_wctob_works" in
+      *yes) ;;
+      *) REPLACE_WCTOB=1 ;;
+    esac
+    if test $REPLACE_WCTOB = 0; then
+
+      dnl IRIX 6.5 has the wctob() function but does not declare it.
+      AC_CHECK_DECLS([wctob], [], [], [[
+        #include <wchar.h>
+      ]])
+      if test $ac_cv_have_decl_wctob != yes; then
+        HAVE_DECL_WCTOB=0
+      fi
+    fi
+  fi
+])
+
+# Prerequisites of lib/wctob.c.
+AC_DEFUN([gl_PREREQ_WCTOB], [
+  :
+])
diff --git a/src/grep/m4/wctomb.m4 b/src/grep/m4/wctomb.m4
new file mode 100644
index 0000000..2da8b26
--- /dev/null
+++ b/src/grep/m4/wctomb.m4
@@ -0,0 +1,19 @@
+# wctomb.m4 serial 2
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_WCTOMB],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+
+  if false; then
+    REPLACE_WCTOMB=1
+  fi
+])
+
+# Prerequisites of lib/wctomb.c.
+AC_DEFUN([gl_PREREQ_WCTOMB], [
+  :
+])
diff --git a/src/grep/m4/wctype_h.m4 b/src/grep/m4/wctype_h.m4
new file mode 100644
index 0000000..7d74212
--- /dev/null
+++ b/src/grep/m4/wctype_h.m4
@@ -0,0 +1,200 @@
+# wctype_h.m4 serial 30
+
+dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.
+
+dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Paul Eggert.
+
+AC_DEFUN_ONCE([gl_WCTYPE_H],
+[
+  AC_REQUIRE([gl_WCTYPE_H_DEFAULTS])
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CHECK_FUNCS_ONCE([iswcntrl])
+  if test $ac_cv_func_iswcntrl = yes; then
+    HAVE_ISWCNTRL=1
+  else
+    HAVE_ISWCNTRL=0
+  fi
+  AC_SUBST([HAVE_ISWCNTRL])
+
+  AC_REQUIRE([gt_TYPE_WINT_T])
+  if test $gt_cv_c_wint_t = yes; then
+    HAVE_WINT_T=1
+  else
+    HAVE_WINT_T=0
+  fi
+  AC_SUBST([HAVE_WINT_T])
+
+  AC_REQUIRE([gl_TYPE_WINT_T_PREREQ])
+
+  gl_CHECK_NEXT_HEADERS([wctype.h])
+  if test $ac_cv_header_wctype_h = yes; then
+    if test $ac_cv_func_iswcntrl = yes; then
+      dnl Linux libc5 has an iswprint function that returns 0 for all arguments.
+      dnl The other functions are likely broken in the same way.
+      AC_CACHE_CHECK([whether iswcntrl works], [gl_cv_func_iswcntrl_works],
+        [
+          AC_RUN_IFELSE(
+            [AC_LANG_SOURCE([[
+               #include <wchar.h>
+               #include <wctype.h>
+               int main () { return iswprint ('x') == 0; }
+            ]])],
+            [gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no],
+            [dnl Guess no on Linux libc5, yes otherwise.
+             AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
+                          #if __GNU_LIBRARY__ == 1
+                          Linux libc5 i18n is broken.
+                          #endif]], [[]])],
+              [gl_cv_func_iswcntrl_works="guessing yes"],
+              [gl_cv_func_iswcntrl_works="guessing no"])
+            ])
+        ])
+    fi
+    HAVE_WCTYPE_H=1
+  else
+    HAVE_WCTYPE_H=0
+  fi
+  AC_SUBST([HAVE_WCTYPE_H])
+
+  if test $GNULIBHEADERS_OVERRIDE_WINT_T = 1; then
+    REPLACE_ISWCNTRL=1
+  else
+    case "$gl_cv_func_iswcntrl_works" in
+      *yes) REPLACE_ISWCNTRL=0 ;;
+      *)    REPLACE_ISWCNTRL=1 ;;
+    esac
+  fi
+  AC_SUBST([REPLACE_ISWCNTRL])
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+    dnl Redefine all of iswcntrl, ..., iswxdigit in <wctype.h>.
+    :
+  fi
+
+  if test $REPLACE_ISWCNTRL = 1; then
+    REPLACE_TOWLOWER=1
+  else
+    AC_CHECK_FUNCS([towlower])
+    if test $ac_cv_func_towlower = yes; then
+      REPLACE_TOWLOWER=0
+    else
+      AC_CHECK_DECLS([towlower],,,
+        [[#include <wchar.h>
+          #if HAVE_WCTYPE_H
+          # include <wctype.h>
+          #endif
+        ]])
+      if test $ac_cv_have_decl_towlower = yes; then
+        dnl On Minix 3.1.8, the system's <wctype.h> declares towlower() and
+        dnl towupper() although it does not have the functions. Avoid a
+        dnl collision with gnulib's replacement.
+        REPLACE_TOWLOWER=1
+      else
+        REPLACE_TOWLOWER=0
+      fi
+    fi
+  fi
+  AC_SUBST([REPLACE_TOWLOWER])
+
+  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_TOWLOWER = 1; then
+    dnl Redefine towlower, towupper in <wctype.h>.
+    :
+  fi
+
+  dnl We assume that the wctype() and iswctype() functions exist if and only
+  dnl if the type wctype_t is defined in <wchar.h> or in <wctype.h> if that
+  dnl exists.
+  dnl HP-UX 11.00 declares all these in <wchar.h> and lacks <wctype.h>.
+  AC_CACHE_CHECK([for wctype_t], [gl_cv_type_wctype_t],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <wchar.h>
+            #if HAVE_WCTYPE_H
+            # include <wctype.h>
+            #endif
+            wctype_t a;
+          ]],
+          [[]])],
+       [gl_cv_type_wctype_t=yes],
+       [gl_cv_type_wctype_t=no])
+    ])
+  if test $gl_cv_type_wctype_t = no; then
+    HAVE_WCTYPE_T=0
+  fi
+
+  dnl We assume that the wctrans() and towctrans() functions exist if and only
+  dnl if the type wctrans_t is defined in <wctype.h>.
+  AC_CACHE_CHECK([for wctrans_t], [gl_cv_type_wctrans_t],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <wchar.h>
+            #include <wctype.h>
+            wctrans_t a;
+          ]],
+          [[]])],
+       [gl_cv_type_wctrans_t=yes],
+       [gl_cv_type_wctrans_t=no])
+    ])
+  if test $gl_cv_type_wctrans_t = no; then
+    HAVE_WCTRANS_T=0
+  fi
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[
+#if !(defined __GLIBC__ && !defined __UCLIBC__)
+# include <wchar.h>
+#endif
+#include <wctype.h>
+    ]],
+    [wctype iswctype wctrans towctrans
+    ])
+])
+
+# gl_WCTYPE_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_WCTYPE_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_WCTYPE_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_WCTYPE_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_WCTYPE_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISWBLANK])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISWDIGIT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISWXDIGIT])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCTYPE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISWCTYPE])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCTRANS])
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TOWCTRANS])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_WCTYPE_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_WCTYPE_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_WCTYPE_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_ISWBLANK=1;      AC_SUBST([HAVE_ISWBLANK])
+  HAVE_WCTYPE_T=1;      AC_SUBST([HAVE_WCTYPE_T])
+  HAVE_WCTRANS_T=1;     AC_SUBST([HAVE_WCTRANS_T])
+  REPLACE_ISWBLANK=0;   AC_SUBST([REPLACE_ISWBLANK])
+  REPLACE_ISWDIGIT=0;   AC_SUBST([REPLACE_ISWDIGIT])
+  REPLACE_ISWXDIGIT=0;  AC_SUBST([REPLACE_ISWXDIGIT])
+])
diff --git a/src/grep/m4/wcwidth.m4 b/src/grep/m4/wcwidth.m4
new file mode 100644
index 0000000..2ac2a51
--- /dev/null
+++ b/src/grep/m4/wcwidth.m4
@@ -0,0 +1,115 @@
+# wcwidth.m4 serial 34
+dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_WCWIDTH],
+[
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  dnl Persuade glibc <wchar.h> to declare wcwidth().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_REQUIRE([gt_TYPE_WCHAR_T])
+  AC_REQUIRE([gt_TYPE_WINT_T])
+
+  AC_CHECK_HEADERS_ONCE([wchar.h])
+  AC_CHECK_FUNCS_ONCE([wcwidth])
+
+  AC_CHECK_DECLS([wcwidth], [], [], [[
+    #include <wchar.h>
+  ]])
+  if test $ac_cv_have_decl_wcwidth != yes; then
+    HAVE_DECL_WCWIDTH=0
+  fi
+
+  if test $ac_cv_func_wcwidth != yes; then
+    AC_CACHE_CHECK([whether wcwidth is a macro],
+      [gl_cv_func_wcwidth_macro],
+      [AC_EGREP_CPP([wchar_header_defines_wcwidth], [
+#include <wchar.h>
+#ifdef wcwidth
+ wchar_header_defines_wcwidth
+#endif],
+         [gl_cv_func_wcwidth_macro=yes],
+         [gl_cv_func_wcwidth_macro=no])
+      ])
+  fi
+
+  if test $ac_cv_func_wcwidth = yes || test $gl_cv_func_wcwidth_macro = yes; then
+    HAVE_WCWIDTH=1
+    dnl On Mac OS X 10.3, wcwidth(0x0301) (COMBINING ACUTE ACCENT) returns 1.
+    dnl On NetBSD 9.0, OpenBSD 5.0, MidnightBSD 1.1,
+    dnl wcwidth(0x05B0) (HEBREW POINT SHEVA) returns 1.
+    dnl On NetBSD 9.0, MidnightBSD 1.1, OSF/1 5.1,
+    dnl wcwidth(0x200B) (ZERO WIDTH SPACE) returns 1.
+    dnl On OpenBSD 5.8, wcwidth(0xFF1A) (FULLWIDTH COLON) returns 0.
+    dnl This leads to bugs in 'ls' (coreutils).
+    dnl On Solaris 11.4, wcwidth(0x2202) (PARTIAL DIFFERENTIAL) returns 2,
+    dnl even in Western locales.
+    AC_CACHE_CHECK([whether wcwidth works reasonably in UTF-8 locales],
+      [gl_cv_func_wcwidth_works],
+      [
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <wchar.h>
+#if !HAVE_DECL_WCWIDTH
+extern
+# ifdef __cplusplus
+"C"
+# endif
+int wcwidth (int);
+#endif
+int main ()
+{
+  int result = 0;
+  if (setlocale (LC_ALL, "en_US.UTF-8") != NULL)
+    {
+      if (wcwidth (0x0301) > 0)
+        result |= 1;
+      if (wcwidth (0x05B0) > 0)
+        result |= 2;
+      if (wcwidth (0x200B) > 0)
+        result |= 4;
+      if (wcwidth (0xFF1A) == 0)
+        result |= 8;
+      if (wcwidth (0x2202) > 1)
+        result |= 16;
+    }
+  return result;
+}]])],
+          [gl_cv_func_wcwidth_works=yes],
+          [gl_cv_func_wcwidth_works=no],
+          [
+changequote(,)dnl
+           case "$host_os" in
+                            # Guess yes on glibc systems.
+             *-gnu* | gnu*) gl_cv_func_wcwidth_works="guessing yes";;
+                            # Guess yes on musl systems.
+             *-musl*)       gl_cv_func_wcwidth_works="guessing yes";;
+                            # Guess yes on AIX 7 systems.
+             aix[7-9]*)     gl_cv_func_wcwidth_works="guessing yes";;
+             *)             gl_cv_func_wcwidth_works="$gl_cross_guess_normal";;
+           esac
+changequote([,])dnl
+          ])
+      ])
+    case "$gl_cv_func_wcwidth_works" in
+      *yes) ;;
+      *no) REPLACE_WCWIDTH=1 ;;
+    esac
+  else
+    HAVE_WCWIDTH=0
+  fi
+  dnl We don't substitute HAVE_WCWIDTH. We assume that if the system does not
+  dnl have the wcwidth function, then it does not declare it.
+])
+
+# Prerequisites of lib/wcwidth.c.
+AC_DEFUN([gl_PREREQ_WCWIDTH], [
+  AC_REQUIRE([AC_C_INLINE])
+  :
+])
diff --git a/src/grep/m4/windows-stat-inodes.m4 b/src/grep/m4/windows-stat-inodes.m4
new file mode 100644
index 0000000..01a8040
--- /dev/null
+++ b/src/grep/m4/windows-stat-inodes.m4
@@ -0,0 +1,19 @@
+# windows-stat-inodes.m4 serial 1
+dnl Copyright (C) 2017-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Enable inode identification in 'struct stat' on native Windows platforms.
+dnl Set WINDOWS_STAT_INODES to
+dnl - 0 -> keep the default (dev_t = 32-bit, ino_t = 16-bit),
+dnl - 1 -> override types normally (dev_t = 32-bit, ino_t = 64-bit),
+dnl - 2 -> override types in an extended way (dev_t = 64-bit, ino_t = 128-bit).
+AC_DEFUN([gl_WINDOWS_STAT_INODES],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    mingw*) WINDOWS_STAT_INODES=1 ;;
+    *)      WINDOWS_STAT_INODES=0 ;;
+  esac
+])
diff --git a/src/grep/m4/wint_t.m4 b/src/grep/m4/wint_t.m4
new file mode 100644
index 0000000..a49c508
--- /dev/null
+++ b/src/grep/m4/wint_t.m4
@@ -0,0 +1,57 @@
+# wint_t.m4 serial 11
+dnl Copyright (C) 2003, 2007-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+dnl Test whether <wchar.h> has the 'wint_t' type and whether gnulib's
+dnl <wchar.h> or <wctype.h> would, if present, override 'wint_t'.
+dnl Prerequisite: AC_PROG_CC
+
+AC_DEFUN([gt_TYPE_WINT_T],
+[
+  AC_CACHE_CHECK([for wint_t], [gt_cv_c_wint_t],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <wchar.h>
+            wint_t foo = (wchar_t)'\0';]],
+          [[]])],
+       [gt_cv_c_wint_t=yes],
+       [gt_cv_c_wint_t=no])])
+  if test $gt_cv_c_wint_t = yes; then
+    AC_DEFINE([HAVE_WINT_T], [1], [Define if you have the 'wint_t' type.])
+
+    dnl Determine whether gnulib's <wchar.h> or <wctype.h> would, if present,
+    dnl override 'wint_t'.
+    AC_CACHE_CHECK([whether wint_t is large enough],
+      [gl_cv_type_wint_t_large_enough],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <wchar.h>
+              int verify[sizeof (wint_t) < sizeof (int) ? -1 : 1];
+            ]])],
+         [gl_cv_type_wint_t_large_enough=yes],
+         [gl_cv_type_wint_t_large_enough=no])])
+    if test $gl_cv_type_wint_t_large_enough = no; then
+      GNULIBHEADERS_OVERRIDE_WINT_T=1
+    else
+      GNULIBHEADERS_OVERRIDE_WINT_T=0
+    fi
+  else
+    GNULIBHEADERS_OVERRIDE_WINT_T=0
+  fi
+  AC_SUBST([GNULIBHEADERS_OVERRIDE_WINT_T])
+])
+
+dnl Prerequisites of the 'wint_t' override.
+AC_DEFUN([gl_TYPE_WINT_T_PREREQ],
+[
+  AC_CHECK_HEADERS_ONCE([crtdefs.h])
+  if test $ac_cv_header_crtdefs_h = yes; then
+    HAVE_CRTDEFS_H=1
+  else
+    HAVE_CRTDEFS_H=0
+  fi
+  AC_SUBST([HAVE_CRTDEFS_H])
+])
diff --git a/src/grep/m4/wmemchr.m4 b/src/grep/m4/wmemchr.m4
new file mode 100644
index 0000000..a5b4eb7
--- /dev/null
+++ b/src/grep/m4/wmemchr.m4
@@ -0,0 +1,25 @@
+# wmemchr.m4 serial 5
+dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_WMEMCHR],
+[
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+  dnl We cannot use AC_CHECK_FUNCS here, because the MSVC 9 header files
+  dnl provide this function as an inline function definition.
+  AC_CACHE_CHECK([for wmemchr], [gl_cv_func_wmemchr],
+    [AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <wchar.h>
+          ]],
+          [[return ! wmemchr ((const wchar_t *) 0, (wchar_t) ' ', 0);]])
+       ],
+       [gl_cv_func_wmemchr=yes],
+       [gl_cv_func_wmemchr=no])
+    ])
+  if test $gl_cv_func_wmemchr = no; then
+    HAVE_WMEMCHR=0
+  fi
+])
diff --git a/src/grep/m4/wmempcpy.m4 b/src/grep/m4/wmempcpy.m4
new file mode 100644
index 0000000..9d774ae
--- /dev/null
+++ b/src/grep/m4/wmempcpy.m4
@@ -0,0 +1,21 @@
+# wmempcpy.m4 serial 1
+dnl Copyright (C) 2020-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_WMEMPCPY],
+[
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+
+  dnl Persuade glibc <wchar.h> to declare wmempcpy().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  dnl The wmempcpy() declaration in lib/wchar.in.h uses 'restrict'.
+  AC_REQUIRE([AC_C_RESTRICT])
+
+  AC_CHECK_FUNCS_ONCE([wmempcpy])
+  if test $ac_cv_func_wmempcpy = no; then
+    HAVE_WMEMPCPY=0
+  fi
+])
diff --git a/src/grep/m4/xalloc.m4 b/src/grep/m4/xalloc.m4
new file mode 100644
index 0000000..8fabf1c
--- /dev/null
+++ b/src/grep/m4/xalloc.m4
@@ -0,0 +1,7 @@
+# xalloc.m4 serial 18
+dnl Copyright (C) 2002-2006, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_XALLOC], [:])
diff --git a/src/grep/m4/xsize.m4 b/src/grep/m4/xsize.m4
new file mode 100644
index 0000000..64e8a4f
--- /dev/null
+++ b/src/grep/m4/xsize.m4
@@ -0,0 +1,12 @@
+# xsize.m4 serial 5
+dnl Copyright (C) 2003-2004, 2008-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_XSIZE],
+[
+  dnl Prerequisites of lib/xsize.h.
+  AC_REQUIRE([gl_SIZE_MAX])
+  AC_CHECK_HEADERS([stdint.h])
+])
diff --git a/src/grep/m4/xstrtol.m4 b/src/grep/m4/xstrtol.m4
new file mode 100644
index 0000000..e6cdef5
--- /dev/null
+++ b/src/grep/m4/xstrtol.m4
@@ -0,0 +1,10 @@
+#serial 11
+dnl Copyright (C) 2002-2007, 2009-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_XSTRTOL],
+[
+  :
+])
diff --git a/src/grep/m4/year2038.m4 b/src/grep/m4/year2038.m4
new file mode 100644
index 0000000..da0f8d7
--- /dev/null
+++ b/src/grep/m4/year2038.m4
@@ -0,0 +1,124 @@
+# year2038.m4 serial 7
+dnl Copyright (C) 2017-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Attempt to ensure that 'time_t' can go past the year 2038 and that
+dnl the functions 'time', 'stat', etc. work with post-2038 timestamps.
+
+AC_DEFUN([gl_YEAR2038_EARLY],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    mingw*)
+      AC_DEFINE([__MINGW_USE_VC2005_COMPAT], [1],
+        [For 64-bit time_t on 32-bit mingw.])
+      ;;
+  esac
+])
+
+# gl_YEAR2038_TEST_INCLUDES
+# -------------------------
+AC_DEFUN([gl_YEAR2038_TEST_INCLUDES],
+[[
+  #include <time.h>
+  /* Check that time_t can represent 2**32 - 1 correctly.  */
+  #define LARGE_TIME_T \\
+    ((time_t) (((time_t) 1 << 30) - 1 + 3 * ((time_t) 1 << 30)))
+  int verify_time_t_range[(LARGE_TIME_T / 65537 == 65535
+                           && LARGE_TIME_T % 65537 == 0)
+                          ? 1 : -1];
+]])
+
+# gl_YEAR2038_BODY(REQUIRE-YEAR2038-SAFE)
+-----------------------------------------
+AC_DEFUN([gl_YEAR2038_BODY],
+[
+ AC_ARG_ENABLE([year2038],
+   [  --disable-year2038      omit support for timestamps past the year 2038])
+ AS_IF([test "$enable_year2038" != no],
+ [
+  dnl On many systems, time_t is already a 64-bit type.
+  dnl On those systems where time_t is still 32-bit, it requires kernel
+  dnl and libc support to make it 64-bit. For glibc 2.34 and later on Linux,
+  dnl defining _TIME_BITS=64 and _FILE_OFFSET_BITS=64 is needed on x86 and ARM.
+  dnl
+  dnl On native Windows, the system include files define types __time32_t
+  dnl and __time64_t. By default, time_t is an alias of
+  dnl   - __time32_t on 32-bit mingw,
+  dnl   - __time64_t on 64-bit mingw and on MSVC (since MSVC 8).
+  dnl But when compiling with -D__MINGW_USE_VC2005_COMPAT, time_t is an
+  dnl alias of __time64_t.
+  dnl And when compiling with -D_USE_32BIT_TIME_T, time_t is an alias of
+  dnl __time32_t.
+  AC_CACHE_CHECK([for time_t past the year 2038], [gl_cv_type_time_t_y2038],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_SOURCE([gl_YEAR2038_TEST_INCLUDES])],
+       [gl_cv_type_time_t_y2038=yes], [gl_cv_type_time_t_y2038=no])
+    ])
+  if test "$gl_cv_type_time_t_y2038" = no; then
+    AC_CACHE_CHECK([for 64-bit time_t with _TIME_BITS=64],
+      [gl_cv_type_time_t_bits_macro],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_SOURCE([[#define _TIME_BITS 64
+                           #define _FILE_OFFSET_BITS 64
+                           ]gl_YEAR2038_TEST_INCLUDES])],
+         [gl_cv_type_time_t_bits_macro=yes],
+         [gl_cv_type_time_t_bits_macro=no])
+      ])
+    if test "$gl_cv_type_time_t_bits_macro" = yes; then
+      AC_DEFINE([_TIME_BITS], [64],
+        [Number of bits in a timestamp, on hosts where this is settable.])
+      dnl AC_SYS_LARGFILE also defines this; it's OK if we do too.
+      AC_DEFINE([_FILE_OFFSET_BITS], [64],
+        [Number of bits in a file offset, on hosts where this is settable.])
+      gl_cv_type_time_t_y2038=yes
+    fi
+  fi
+  if test $gl_cv_type_time_t_y2038 = no; then
+    AC_COMPILE_IFELSE(
+      [AC_LANG_SOURCE(
+         [[#ifdef _USE_32BIT_TIME_T
+             int ok;
+           #else
+             error fail
+           #endif
+         ]])],
+      [AC_MSG_FAILURE(
+         [The 'time_t' type stops working after January 2038.
+          Remove _USE_32BIT_TIME_T from the compiler flags.])],
+      [# If not cross-compiling and $1 says we should check,
+       # and 'touch' works with a large timestamp, then evidently wider time_t
+       # is desired and supported, so fail and ask the builder to fix the
+       # problem.  Otherwise, just warn the builder.
+       m4_ifval([$1],
+         [if test $cross_compiling = no \
+             && TZ=UTC0 touch -t 210602070628.15 conftest.time 2>/dev/null; then
+            case `TZ=UTC0 LC_ALL=C ls -l conftest.time 2>/dev/null` in
+              *'Feb  7  2106'* | *'Feb  7 17:10'*)
+                AC_MSG_FAILURE(
+                  [The 'time_t' type stops working after January 2038,
+                   and your system appears to support a wider 'time_t'.
+                   Try configuring with 'CC="${CC} -m64"'.
+                   To build with a 32-bit time_t anyway (not recommended),
+                   configure with '--disable-year2038'.]);;
+            esac
+            rm -f conftest.time
+          fi])
+       if test "$gl_warned_about_y2038" != yes; then
+         AC_MSG_WARN(
+           [The 'time_t' type stops working after January 2038,
+            and this package needs a wider 'time_t' type
+            if there is any way to access timestamps after that.
+            Configure with 'CC="${CC} -m64"' perhaps?])
+         gl_warned_about_y2038=yes
+       fi
+      ])
+  fi])
+])
+
+AC_DEFUN([gl_YEAR2038],
+[
+  gl_YEAR2038_BODY([require-year2038-safe])
+])
diff --git a/src/grep/m4/zzgnulib.m4 b/src/grep/m4/zzgnulib.m4
new file mode 100644
index 0000000..b953384
--- /dev/null
+++ b/src/grep/m4/zzgnulib.m4
@@ -0,0 +1,23 @@
+# zzgnulib.m4 serial 1
+dnl Copyright (C) 2020-2021 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl This file must be named something that sorts after all other
+dnl package- or gnulib-provided .m4 files - at least for those packages
+dnl that redefine AC_PROG_CC.
+
+dnl Redefine AC_PROG_CC so that it ends with invocations of gl_COMPILER_CLANG
+dnl and gl_COMPILER_PREPARE_CHECK_DECL.
+m4_define([AC_PROG_CC],
+  m4_defn([AC_PROG_CC])[
+gl_COMPILER_CLANG
+gl_COMPILER_PREPARE_CHECK_DECL
+])
+
+# gl_ZZGNULIB
+# -----------
+# Witness macro that this file has been included.  Needed to force
+# Automake to include this file after all other gnulib .m4 files.
+AC_DEFUN([gl_ZZGNULIB])
diff --git a/src/grep/maint.mk b/src/grep/maint.mk
new file mode 100644
index 0000000..6a3ea96
--- /dev/null
+++ b/src/grep/maint.mk
@@ -0,0 +1,1759 @@
+# -*-Makefile-*-
+# This Makefile fragment tries to be general-purpose enough to be
+# used by many projects via the gnulib maintainer-makefile module.
+
+## Copyright (C) 2001-2021 Free Software Foundation, Inc.
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# This is reported not to work with make-3.79.1
+# ME := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+ME := maint.mk
+
+# These variables ought to be defined through the configure.ac section
+# of the module description. But some packages import this file directly,
+# ignoring the module description.
+AWK ?= awk
+GREP ?= grep
+SED ?= sed
+
+# Helper variables.
+_empty =
+_sp = $(_empty) $(_empty)
+
+# _equal,S1,S2
+# ------------
+# If S1 == S2, return S1, otherwise the empty string.
+_equal = $(and $(findstring $(1),$(2)),$(findstring $(2),$(1)))
+
+# member-check,VARIABLE,VALID-VALUES
+# ----------------------------------
+# Check that $(VARIABLE) is in the space-separated list of VALID-VALUES, and
+# return it.  Die otherwise.
+member-check =								\
+  $(strip								\
+    $(if $($(1)),							\
+      $(if $(findstring $(_sp),$($(1))),				\
+          $(error invalid $(1): '$($(1))', expected $(2)),		\
+          $(or $(findstring $(_sp)$($(1))$(_sp),$(_sp)$(2)$(_sp)),	\
+            $(error invalid $(1): '$($(1))', expected $(2)))),		\
+      $(error $(1) undefined)))
+
+# Do not save the original name or timestamp in the .tar.gz file.
+# Use --rsyncable if available.
+gzip_rsyncable := \
+  $(shell gzip --help 2>/dev/null|$(GREP) rsyncable >/dev/null \
+    && printf %s --rsyncable)
+GZIP_ENV = '--no-name --best $(gzip_rsyncable)'
+
+GIT = git
+VC = $(GIT)
+
+VC_LIST = $(srcdir)/$(_build-aux)/vc-list-files -C $(srcdir)
+
+# You can override this variable in cfg.mk if your gnulib submodule lives
+# in a different location.
+gnulib_dir ?= $(shell if test -d $(srcdir)/gnulib; then \
+			echo $(srcdir)/gnulib; \
+		else \
+			echo ${GNULIB_SRCDIR}; \
+		fi)
+
+# You can override this variable in cfg.mk to set your own regexp
+# matching files to ignore.
+VC_LIST_ALWAYS_EXCLUDE_REGEX ?= ^$$
+
+# This is to preprocess robustly the output of $(VC_LIST), so that even
+# when $(srcdir) is a pathological name like "....", the leading sed command
+# removes only the intended prefix.
+_dot_escaped_srcdir = $(subst .,\.,$(srcdir))
+
+# Post-process $(VC_LIST) output, prepending $(srcdir)/, but only
+# when $(srcdir) is not ".".
+ifeq ($(srcdir),.)
+  _prepend_srcdir_prefix =
+else
+  _prepend_srcdir_prefix = | $(SED) 's|^|$(srcdir)/|'
+endif
+
+# In order to be able to consistently filter "."-relative names,
+# (i.e., with no $(srcdir) prefix), this definition is careful to
+# remove any $(srcdir) prefix, and to restore what it removes.
+_sc_excl = \
+  $(or $(exclude_file_name_regexp--$@),^$$)
+VC_LIST_EXCEPT = \
+  $(VC_LIST) | $(SED) 's|^$(_dot_escaped_srcdir)/||' \
+	| if test -f $(srcdir)/.x-$@; then $(GREP) -vEf $(srcdir)/.x-$@; \
+	  else $(GREP) -Ev -e "$${VC_LIST_EXCEPT_DEFAULT-ChangeLog}"; fi \
+	| $(GREP) -Ev -e '($(VC_LIST_ALWAYS_EXCLUDE_REGEX)|$(_sc_excl))' \
+	$(_prepend_srcdir_prefix)
+
+ifeq ($(origin prev_version_file), undefined)
+  prev_version_file = $(srcdir)/.prev-version
+endif
+
+PREV_VERSION := $(shell cat $(prev_version_file) 2>/dev/null)
+VERSION_REGEXP = $(subst .,\.,$(VERSION))
+PREV_VERSION_REGEXP = $(subst .,\.,$(PREV_VERSION))
+
+ifeq ($(VC),$(GIT))
+  this-vc-tag = v$(VERSION)
+  this-vc-tag-regexp = v$(VERSION_REGEXP)
+else
+  tag-package = $(shell echo "$(PACKAGE)" | tr '[:lower:]' '[:upper:]')
+  tag-this-version = $(subst .,_,$(VERSION))
+  this-vc-tag = $(tag-package)-$(tag-this-version)
+  this-vc-tag-regexp = $(this-vc-tag)
+endif
+my_distdir = $(PACKAGE)-$(VERSION)
+
+# Old releases are stored here.
+release_archive_dir ?= ../release
+
+# If RELEASE_TYPE is undefined, but RELEASE is, use its second word.
+# But overwrite VERSION.
+ifdef RELEASE
+  VERSION := $(word 1, $(RELEASE))
+  RELEASE_TYPE ?= $(word 2, $(RELEASE))
+endif
+
+# Validate and return $(RELEASE_TYPE), or die.
+RELEASE_TYPES = alpha beta stable
+release-type = $(call member-check,RELEASE_TYPE,$(RELEASE_TYPES))
+
+# Override gnu_rel_host and url_dir_list in cfg.mk if these are not right.
+# Use alpha.gnu.org for alpha and beta releases.
+# Use ftp.gnu.org for stable releases.
+gnu_ftp_host-alpha = alpha.gnu.org
+gnu_ftp_host-beta = alpha.gnu.org
+gnu_ftp_host-stable = ftp.gnu.org
+gnu_rel_host ?= $(gnu_ftp_host-$(release-type))
+
+url_dir_list ?= $(if $(call _equal,$(gnu_rel_host),ftp.gnu.org),	\
+                     https://ftpmirror.gnu.org/$(PACKAGE),		\
+                     https://$(gnu_rel_host)/gnu/$(PACKAGE))
+
+# Override this in cfg.mk if you are using a different format in your
+# NEWS file.
+today = $(shell date +%Y-%m-%d)
+
+# Select which lines of NEWS are searched for $(news-check-regexp).
+# This is a sed line number spec.  The default says that we search
+# lines 1..10 of NEWS for $(news-check-regexp).
+# If you want to search only line 3 or only lines 20-22, use "3" or "20,22".
+news-check-lines-spec ?= 1,10
+news-check-regexp ?= '^\*.* $(VERSION_REGEXP) \($(today)\)'
+
+# Prevent programs like 'sort' from considering distinct strings to be equal.
+# Doing it here saves us from having to set LC_ALL elsewhere in this file.
+export LC_ALL = C
+
+## --------------- ##
+## Sanity checks.  ##
+## --------------- ##
+
+ifneq ($(_gl-Makefile),)
+_cfg_mk := $(wildcard $(srcdir)/cfg.mk)
+
+# Collect the names of rules starting with 'sc_'.
+syntax-check-rules := $(sort $(shell env LC_ALL=C $(SED) -n \
+   's/^\(sc_[a-zA-Z0-9_-]*\):.*/\1/p' $(srcdir)/$(ME) $(_cfg_mk)))
+.PHONY: $(syntax-check-rules)
+
+ifeq ($(shell $(VC_LIST) >/dev/null 2>&1; echo $$?),0)
+  local-checks-available += $(syntax-check-rules)
+else
+  local-checks-available += no-vc-detected
+no-vc-detected:
+	@echo "No version control files detected; skipping syntax check"
+endif
+.PHONY: $(local-checks-available)
+
+# Arrange to print the name of each syntax-checking rule just before running it.
+$(syntax-check-rules): %: %.m
+sc_m_rules_ = $(patsubst %, %.m, $(syntax-check-rules))
+.PHONY: $(sc_m_rules_)
+$(sc_m_rules_):
+	@echo $(patsubst sc_%.m, %, $@)
+	@date +%s.%N > .sc-start-$(basename $@)
+
+# Compute and print the elapsed time for each syntax-check rule.
+sc_z_rules_ = $(patsubst %, %.z, $(syntax-check-rules))
+.PHONY: $(sc_z_rules_)
+$(sc_z_rules_): %.z: %
+	@end=$$(date +%s.%N);						\
+	start=$$(cat .sc-start-$*);					\
+	rm -f .sc-start-$*;						\
+	$(AWK) -v s=$$start -v e=$$end					\
+	  'END {printf "%.2f $(patsubst sc_%,%,$*)\n", e - s}' < /dev/null
+
+# The patsubst here is to replace each sc_% rule with its sc_%.z wrapper
+# that computes and prints elapsed time.
+local-check :=								\
+  $(patsubst sc_%, sc_%.z,						\
+    $(filter-out $(local-checks-to-skip), $(local-checks-available)))
+
+syntax-check: $(local-check)
+endif
+
+# _sc_search_regexp
+#
+# This macro searches for a given construct in the selected files and
+# then takes some action.
+#
+# Parameters (shell variables):
+#
+#  prohibit | require
+#
+#     Regular expression (ERE) denoting either a forbidden construct
+#     or a required construct.  Those arguments are exclusive.
+#
+#  exclude
+#
+#     Regular expression (ERE) denoting lines to ignore that matched
+#     a prohibit construct.  For example, this can be used to exclude
+#     comments that mention why the nearby code uses an alternative
+#     construct instead of the simpler prohibited construct.
+#
+#  in_vc_files | in_files
+#
+#     grep-E-style regexp selecting the files to check.  For in_vc_files,
+#     the regexp is used to select matching files from the list of all
+#     version-controlled files; for in_files, it's from the names printed
+#     by "find $(srcdir)".  When neither is specified, use all files that
+#     are under version control.
+#
+#  containing | non_containing
+#
+#     Select the files (non) containing strings matching this regexp.
+#     If both arguments are specified then CONTAINING takes
+#     precedence.
+#
+#  with_grep_options
+#
+#     Extra options for grep.
+#
+#  ignore_case
+#
+#     Ignore case.
+#
+#  halt
+#
+#     Message to display before to halting execution.
+#
+# Finally, you may exempt files based on an ERE matching file names.
+# For example, to exempt from the sc_space_tab check all files with the
+# .diff suffix, set this Make variable:
+#
+# exclude_file_name_regexp--sc_space_tab = \.diff$
+#
+# Note that while this functionality is mostly inherited via VC_LIST_EXCEPT,
+# when filtering by name via in_files, we explicitly filter out matching
+# names here as well.
+
+# Initialize each, so that envvar settings cannot interfere.
+export require =
+export prohibit =
+export exclude =
+export in_vc_files =
+export in_files =
+export containing =
+export non_containing =
+export halt =
+export with_grep_options =
+
+# By default, _sc_search_regexp does not ignore case.
+export ignore_case =
+_ignore_case = $$(test -n "$$ignore_case" && printf %s -i || :)
+
+define _sc_say_and_exit
+   dummy=; : so we do not need a semicolon before each use;		\
+   { printf '%s\n' "$(ME): $$msg" 1>&2; exit 1; };
+endef
+
+define _sc_search_regexp
+   dummy=; : so we do not need a semicolon before each use;		\
+									\
+   : Check arguments;							\
+   test -n "$$prohibit" && test -n "$$require"				\
+     && { msg='Cannot specify both prohibit and require'		\
+          $(_sc_say_and_exit) } || :;					\
+   test -z "$$prohibit" && test -z "$$require"				\
+     && { msg='Should specify either prohibit or require'		\
+          $(_sc_say_and_exit) } || :;					\
+   test -z "$$prohibit" && test -n "$$exclude"				\
+     && { msg='Use of exclude requires a prohibit pattern'		\
+          $(_sc_say_and_exit) } || :;					\
+   test -n "$$in_vc_files" && test -n "$$in_files"			\
+     && { msg='Cannot specify both in_vc_files and in_files'		\
+          $(_sc_say_and_exit) } || :;					\
+   test "x$$halt" != x							\
+     || { msg='halt not defined' $(_sc_say_and_exit) };			\
+									\
+   : Filter by file name;						\
+   if test -n "$$in_files"; then					\
+     files=$$(find $(srcdir) | $(GREP) -E "$$in_files"			\
+              | $(GREP) -Ev '$(_sc_excl)');				\
+   else									\
+     files=$$($(VC_LIST_EXCEPT));					\
+     if test -n "$$in_vc_files"; then					\
+       files=$$(echo "$$files" | $(GREP) -E "$$in_vc_files");		\
+     fi;								\
+   fi;									\
+									\
+   : Filter by content;							\
+   test -n "$$files"							\
+     && test -n "$$containing"						\
+     && { files=$$(echo "$$files" | xargs $(GREP) -l "$$containing"); }	\
+     || :;								\
+   test -n "$$files"							\
+     && test -n "$$non_containing"					\
+     && { files=$$(echo "$$files" | xargs $(GREP) -vl "$$non_containing"); } \
+     || :;								\
+									\
+   : Check for the construct;						\
+   if test -n "$$files"; then						\
+     if test -n "$$prohibit"; then					\
+       echo "$$files"							\
+         | xargs $(GREP) $$with_grep_options $(_ignore_case) -nE	\
+		"$$prohibit" /dev/null					\
+         | $(GREP) -vE "$${exclude:-^$$}"				\
+         && { msg="$$halt" $(_sc_say_and_exit) }			\
+         || :;								\
+     else								\
+       echo "$$files"							\
+         | xargs							\
+             $(GREP) $$with_grep_options $(_ignore_case) -LE "$$require" \
+         | $(GREP) .							\
+         && { msg="$$halt" $(_sc_say_and_exit) }			\
+         || :;								\
+     fi									\
+   else :;								\
+   fi || :;
+endef
+
+sc_avoid_if_before_free:
+	@$(VC_LIST_EXCEPT)						\
+	  | $(GREP) -v useless-if-before-free				\
+	  | xargs							\
+	      $(srcdir)/$(_build-aux)/useless-if-before-free		\
+	      $(useless_free_options)					\
+	  && { printf '$(ME): found useless "if"'			\
+		      ' before "free" above\n' 1>&2;			\
+	       exit 1; }						\
+	  || :
+
+sc_cast_of_argument_to_free:
+	@prohibit='\<free *\( *\(' halt="don't cast free argument"	\
+	  $(_sc_search_regexp)
+
+sc_cast_of_x_alloc_return_value:
+	@prohibit='\*\) *x(m|c|re)alloc\>'				\
+	halt="don't cast x*alloc return value"				\
+	  $(_sc_search_regexp)
+
+sc_cast_of_alloca_return_value:
+	@prohibit='\*\) *alloca\>'					\
+	halt="don't cast alloca return value"				\
+	  $(_sc_search_regexp)
+
+sc_space_tab:
+	@prohibit='[ ]	'						\
+	halt='found SPACE-TAB sequence; remove the SPACE'		\
+	  $(_sc_search_regexp)
+
+# Don't use *scanf or the old ato* functions in "real" code.
+# They provide no error checking mechanism.
+# Instead, use strto* functions.
+sc_prohibit_atoi_atof:
+	@prohibit='\<([fs]?scanf|ato([filq]|ll)) *\('				\
+	halt='do not use *scan''f, ato''f, ato''i, ato''l, ato''ll or ato''q'	\
+	  $(_sc_search_regexp)
+
+# Use STREQ rather than comparing strcmp == 0, or != 0.
+sp_ = strcmp *\(.+\)
+sc_prohibit_strcmp:
+	@prohibit='! *strcmp *\(|\<$(sp_) *[!=]=|[!=]= *$(sp_)'		\
+	exclude='# *define STRN?EQ\('					\
+	halt='replace strcmp calls above with STREQ/STRNEQ'		\
+	  $(_sc_search_regexp)
+
+# Really.  You don't want to use this function.
+# It may fail to NUL-terminate the destination,
+# and always NUL-pads out to the specified length.
+sc_prohibit_strncpy:
+	@prohibit='\<strncpy *\('					\
+	halt='do not use strncpy, period'				\
+	  $(_sc_search_regexp)
+
+# Pass EXIT_*, not number, to usage, exit, and error (when exiting)
+# Convert all uses automatically, via these two commands:
+# git grep -l '\<exit *(1)' \
+#  | grep -vEf .x-sc_prohibit_magic_number_exit \
+#  | xargs --no-run-if-empty \
+#      perl -pi -e 's/(^|[^.])\b(exit ?)\(1\)/$1$2(EXIT_FAILURE)/'
+# git grep -l '\<exit *(0)' \
+#  | grep -vEf .x-sc_prohibit_magic_number_exit \
+#  | xargs --no-run-if-empty \
+#      perl -pi -e 's/(^|[^.])\b(exit ?)\(0\)/$1$2(EXIT_SUCCESS)/'
+sc_prohibit_magic_number_exit:
+	@prohibit='(^|[^.])\<(usage|exit|error) ?\(-?[0-9]+[,)]'	\
+	exclude='exit \(77\)|error ?\(((0|77),|[^,]*)'			\
+	halt='use EXIT_* values rather than magic number'		\
+	  $(_sc_search_regexp)
+
+# Check that we don't use $< in non-implicit Makefile rules.
+#
+# To find the Makefiles, trace AC_CONFIG_FILES.  Using VC_LIST would
+# miss the Makefiles that are not under VC control (e.g., symlinks
+# installed for gettext).  "Parsing" (recursive) uses of SUBDIRS seems
+# too delicate.
+#
+# Use GNU Make's --print-data-base to normalize the rules into some
+# easy to parse format: they are separated by two \n.  Look for the
+# "section" about non-pattern rules (marked with "# Files") inside
+# which there are still the POSIX Make like implicit rules (".c.o").
+sc_prohibit_gnu_make_extensions_awk_ =					\
+  BEGIN {								\
+      RS = "\n\n";							\
+      in_rules = 0;							\
+  }									\
+  /^\# Files/ {								\
+      in_rules = 1;							\
+  }									\
+  /\$$</ && in_rules && $$0 !~ /^(.*\n)*\.\w+(\.\w+)?:/ {		\
+      print "Error: " file ": $$< in a non implicit rule\n" $$0;	\
+      status = 1;							\
+  }									\
+  END {									\
+     exit status;							\
+  }
+sc_prohibit_gnu_make_extensions:
+	@if $(AWK) --version | grep GNU >/dev/null 2>&1; then		\
+	  (cd $(srcdir) && autoconf --trace AC_CONFIG_FILES:'$$1') |	\
+	    tr ' ' '\n' |						\
+	    $(SED) -ne '/Makefile/{s/\.in$$//;p;}' |			\
+	    while read m; do						\
+	      $(MAKE) -qp -f $$m .DUMMY-TARGET 2>/dev/null |		\
+		$(AWK) -v file=$$m -e '$($@_awk_)' || exit 1;		\
+	    done;							\
+	fi
+
+# Using EXIT_SUCCESS as the first argument to error is misleading,
+# since when that parameter is 0, error does not exit.  Use '0' instead.
+sc_error_exit_success:
+	@prohibit='error *\(EXIT_SUCCESS,'				\
+	in_vc_files='\.[chly]$$'					\
+	halt='found error (EXIT_SUCCESS'				\
+	 $(_sc_search_regexp)
+
+# "FATAL:" should be fully upper-cased in error messages
+# "WARNING:" should be fully upper-cased, or fully lower-cased
+sc_error_message_warn_fatal:
+	@$(VC_LIST_EXCEPT)						\
+	  | xargs $(GREP) -nEA2 '[^rp]error *\(' /dev/null		\
+	  | $(GREP) -E '"Warning|"Fatal|"fatal'				\
+	  && { echo '$(ME): use FATAL, WARNING or warning' 1>&2;	\
+	       exit 1; }						\
+	  || :
+
+# Error messages should not start with a capital letter
+sc_error_message_uppercase:
+	@$(VC_LIST_EXCEPT)						\
+	  | xargs $(GREP) -nEA2 '[^rp]error *\(' /dev/null		\
+	  | $(GREP) -E '"[A-Z]'						\
+	  | $(GREP) -vE '"FATAL|"WARNING|"Java|"C#|PRIuMAX'		\
+	  && { echo '$(ME): found capitalized error message' 1>&2;	\
+	       exit 1; }						\
+	  || :
+
+# Error messages should not end with a period
+sc_error_message_period:
+	@$(VC_LIST_EXCEPT)						\
+	  | xargs $(GREP) -nEA2 '[^rp]error *\(' /dev/null		\
+	  | $(GREP) -E '[^."]\."'					\
+	  && { echo '$(ME): found error message ending in period' 1>&2;	\
+	       exit 1; }						\
+	  || :
+
+sc_file_system:
+	@prohibit=file''system						\
+	exclude='/proc/filesystems'					\
+	ignore_case=1							\
+	halt='found use of "file''system"; spell it "file system"'	\
+	  $(_sc_search_regexp)
+
+# Don't use cpp tests of this symbol.  All code assumes config.h is included.
+sc_prohibit_have_config_h:
+	@prohibit='^# *if.*HAVE''_CONFIG_H'				\
+	halt='found use of HAVE''_CONFIG_H; remove'			\
+	  $(_sc_search_regexp)
+
+# Nearly all .c files must include <config.h>.  However, we also permit this
+# via inclusion of a package-specific header, if cfg.mk specified one.
+# config_h_header must be suitable for grep -E.
+config_h_header ?= <config\.h>
+sc_require_config_h:
+	@require='^# *include $(config_h_header)'			\
+	in_vc_files='\.c$$'						\
+	halt='the above files do not include <config.h>'		\
+	  $(_sc_search_regexp)
+
+# Print each file name for which the first #include does not match
+# $(config_h_header).  Like grep -m 1, this only looks at the first match.
+perl_config_h_first_ =							\
+  -e 'BEGIN {$$ret = 0}'						\
+  -e 'if (/^\# *include\b/) {'						\
+  -e '  if (not m{^\# *include $(config_h_header)}) {'			\
+  -e '    print "$$ARGV\n";'						\
+  -e '    $$ret = 1;'							\
+  -e '  }'								\
+  -e '  \# Move on to next file after first include'			\
+  -e '  close ARGV;'							\
+  -e '}'								\
+  -e 'END {exit $$ret}'
+
+# You must include <config.h> before including any other header file.
+# This can possibly be via a package-specific header, if given by cfg.mk.
+sc_require_config_h_first:
+	@if $(VC_LIST_EXCEPT) | $(GREP) '\.c$$' > /dev/null; then	\
+	  files=$$($(VC_LIST_EXCEPT) | $(GREP) '\.c$$') &&		\
+	  perl -n $(perl_config_h_first_) $$files ||			\
+	    { echo '$(ME): the above files include some other header'	\
+		'before <config.h>' 1>&2; exit 1; } || :;		\
+	else :;								\
+	fi
+
+sc_prohibit_HAVE_MBRTOWC:
+	@prohibit='\bHAVE_MBRTOWC\b'					\
+	halt="do not use $$prohibit; it is always defined"		\
+	  $(_sc_search_regexp)
+
+# To use this "command" macro, you must first define two shell variables:
+# h: the header name, with no enclosing <> or ""
+# re: a regular expression that matches IFF something provided by $h is used.
+define _sc_header_without_use
+  dummy=; : so we do not need a semicolon before each use;		\
+  h_esc=`echo '[<"]'"$$h"'[">]'|$(SED) 's/\./\\\\./g'`;			\
+  if $(VC_LIST_EXCEPT) | $(GREP) '\.c$$' > /dev/null; then		\
+    files=$$($(GREP) -l '^# *include '"$$h_esc"				\
+	     $$($(VC_LIST_EXCEPT) | $(GREP) '\.c$$')) &&		\
+    $(GREP) -LE "$$re" $$files | $(GREP) . &&				\
+      { echo "$(ME): the above files include $$h but don't use it"	\
+	1>&2; exit 1; } || :;						\
+  else :;								\
+  fi
+endef
+
+# Prohibit the inclusion of assert.h without an actual use of assert.
+sc_prohibit_assert_without_use:
+	@h='assert.h' re='\<assert *\(' $(_sc_header_without_use)
+
+# Prohibit the inclusion of close-stream.h without an actual use.
+sc_prohibit_close_stream_without_use:
+	@h='close-stream.h' re='\<close_stream *\(' $(_sc_header_without_use)
+
+# Prohibit the inclusion of getopt.h without an actual use.
+sc_prohibit_getopt_without_use:
+	@h='getopt.h' re='\<getopt(_long)? *\(' $(_sc_header_without_use)
+
+# Don't include quotearg.h unless you use one of its functions.
+sc_prohibit_quotearg_without_use:
+	@h='quotearg.h' re='\<quotearg(_[^ ]+)? *\(' $(_sc_header_without_use)
+
+# Don't include quote.h unless you use one of its functions.
+sc_prohibit_quote_without_use:
+	@h='quote.h' re='\<quote((_n)? *\(|_quoting_options\>)' \
+	  $(_sc_header_without_use)
+
+# Don't include this header unless you use one of its functions.
+sc_prohibit_long_options_without_use:
+	@h='long-options.h' re='\<parse_(long_options|gnu_standard_options_only) *\(' \
+	  $(_sc_header_without_use)
+
+# Don't include this header unless you use one of its functions.
+sc_prohibit_inttostr_without_use:
+	@h='inttostr.h' re='\<(off|[iu]max|uint)tostr *\(' \
+	  $(_sc_header_without_use)
+
+# Don't include this header unless you use one of its functions.
+sc_prohibit_ignore_value_without_use:
+	@h='ignore-value.h' re='\<ignore_(value|ptr) *\(' \
+	  $(_sc_header_without_use)
+
+# Don't include this header unless you use one of its functions.
+sc_prohibit_error_without_use:
+	@h='error.h' \
+	re='\<error(_at_line|_print_progname|_one_per_line|_message_count)? *\('\
+	  $(_sc_header_without_use)
+
+# Don't include xalloc.h unless you use one of its functions.
+# Consider these symbols:
+# perl -lne '/^# *define (\w+)\(/ and print $1' lib/xalloc.h|grep -v '^__';
+# perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/xalloc.h
+# Divide into two sets on case, and filter each through this:
+# | sort | perl -MRegexp::Assemble -le \
+#  'print Regexp::Assemble->new(file => "/dev/stdin")->as_string'|sed 's/\?://g'
+# Note this was produced by the above:
+# _xa1 = \
+#x(((2n?)?re|c(har)?|n(re|m)|z)alloc|alloc_(oversized|die)|m(alloc|emdup)|strdup)
+# But we can do better, in at least two ways:
+# 1) take advantage of two "dup"-suffixed strings:
+# x(((2n?)?re|c(har)?|n(re|m)|[mz])alloc|alloc_(oversized|die)|(mem|str)dup)
+# 2) notice that "c(har)?|[mz]" is equivalent to the shorter and more readable
+# "char|[cmz]"
+# x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
+_xa1 = x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
+_xa2 = X([CZ]|N?M)ALLOC
+sc_prohibit_xalloc_without_use:
+	@h='xalloc.h' \
+	re='\<($(_xa1)|$(_xa2)) *\('\
+	  $(_sc_header_without_use)
+
+# Extract function names:
+# perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/hash.h
+_hash_re = \
+clear|delete|free|get_(first|next)|insert|lookup|print_statistics|reset_tuning
+_hash_fn = \<($(_hash_re)) *\(
+_hash_struct = (struct )?\<[Hh]ash_(table|tuning)\>
+sc_prohibit_hash_without_use:
+	@h='hash.h' \
+	re='$(_hash_fn)|$(_hash_struct)'\
+	  $(_sc_header_without_use)
+
+sc_prohibit_cloexec_without_use:
+	@h='cloexec.h' re='\<(set_cloexec_flag|dup_cloexec) *\(' \
+	  $(_sc_header_without_use)
+
+sc_prohibit_posixver_without_use:
+	@h='posixver.h' re='\<posix2_version *\(' $(_sc_header_without_use)
+
+sc_prohibit_same_without_use:
+	@h='same.h' re='\<same_name(at)? *\(' $(_sc_header_without_use)
+
+sc_prohibit_hash_pjw_without_use:
+	@h='hash-pjw.h' \
+	re='\<hash_pjw\>' \
+	  $(_sc_header_without_use)
+
+sc_prohibit_safe_read_without_use:
+	@h='safe-read.h' re='(\<SAFE_READ_ERROR\>|\<safe_read *\()' \
+	  $(_sc_header_without_use)
+
+sc_prohibit_argmatch_without_use:
+	@h='argmatch.h' \
+	re='(\<(ARGMATCH_DEFINE_GROUP|ARRAY_CARDINALITY|X?ARGMATCH(|_TO_ARGUMENT|_VERIFY))\>|\<(invalid_arg|argmatch(_exit_fn|_(in)?valid)?) *\()' \
+	  $(_sc_header_without_use)
+
+sc_prohibit_canonicalize_without_use:
+	@h='canonicalize.h' \
+	re='CAN_(EXISTING|ALL_BUT_LAST|MISSING)|canonicalize_(mode_t|filename_mode|file_name)' \
+	  $(_sc_header_without_use)
+
+sc_prohibit_root_dev_ino_without_use:
+	@h='root-dev-ino.h' \
+	re='(\<ROOT_DEV_INO_(CHECK|WARN)\>|\<get_root_dev_ino *\()' \
+	  $(_sc_header_without_use)
+
+sc_prohibit_openat_without_use:
+	@h='openat.h' \
+	re='\<(openat_(permissive|needs_fchdir|(save|restore)_fail)|l?(stat|ch(own|mod))at|(euid)?accessat|(FCHMOD|FCHOWN|STAT)AT_INLINE)\>' \
+	  $(_sc_header_without_use)
+
+# Prohibit the inclusion of c-ctype.h without an actual use.
+ctype_re = isalnum|isalpha|isascii|isblank|iscntrl|isdigit|isgraph|islower\
+|isprint|ispunct|isspace|isupper|isxdigit|tolower|toupper
+sc_prohibit_c_ctype_without_use:
+	@h='c-ctype.h' re='\<c_($(ctype_re)) *\(' \
+	  $(_sc_header_without_use)
+
+# The following list was generated by running:
+# man signal.h|col -b|perl -ne '/bsd_signal.*;/.../sigwaitinfo.*;/ and print' \
+#   | perl -lne '/^\s+(?:int|void).*?(\w+).*/ and print $1' | fmt
+_sig_functions = \
+  bsd_signal kill killpg pthread_kill pthread_sigmask raise sigaction \
+  sigaddset sigaltstack sigdelset sigemptyset sigfillset sighold sigignore \
+  siginterrupt sigismember signal sigpause sigpending sigprocmask sigqueue \
+  sigrelse sigset sigsuspend sigtimedwait sigwait sigwaitinfo
+_sig_function_re = $(subst $(_sp),|,$(strip $(_sig_functions)))
+# The following were extracted from "man signal.h" manually.
+_sig_types_and_consts =							\
+  MINSIGSTKSZ SA_NOCLDSTOP SA_NOCLDWAIT SA_NODEFER SA_ONSTACK		\
+  SA_RESETHAND SA_RESTART SA_SIGINFO SIGEV_NONE SIGEV_SIGNAL		\
+  SIGEV_THREAD SIGSTKSZ SIG_BLOCK SIG_SETMASK SIG_UNBLOCK SS_DISABLE	\
+  SS_ONSTACK mcontext_t pid_t sig_atomic_t sigevent siginfo_t sigset_t	\
+  sigstack sigval stack_t ucontext_t
+# generated via this:
+# perl -lne '/^#ifdef (SIG\w+)/ and print $1' lib/sig2str.c|sort -u|fmt -70
+_sig_names =								\
+  SIGABRT SIGALRM SIGALRM1 SIGBUS SIGCANCEL SIGCHLD SIGCLD SIGCONT	\
+  SIGDANGER SIGDIL SIGEMT SIGFPE SIGFREEZE SIGGRANT SIGHUP SIGILL	\
+  SIGINFO SIGINT SIGIO SIGIOT SIGKAP SIGKILL SIGKILLTHR SIGLOST SIGLWP	\
+  SIGMIGRATE SIGMSG SIGPHONE SIGPIPE SIGPOLL SIGPRE SIGPROF SIGPWR	\
+  SIGQUIT SIGRETRACT SIGSAK SIGSEGV SIGSOUND SIGSTKFLT SIGSTOP SIGSYS	\
+  SIGTERM SIGTHAW SIGTRAP SIGTSTP SIGTTIN SIGTTOU SIGURG SIGUSR1	\
+  SIGUSR2 SIGVIRT SIGVTALRM SIGWAITING SIGWINCH SIGWIND SIGWINDOW	\
+  SIGXCPU SIGXFSZ
+_sig_syms_re = $(subst $(_sp),|,$(strip $(_sig_names) $(_sig_types_and_consts)))
+
+# Prohibit the inclusion of signal.h without an actual use.
+sc_prohibit_signal_without_use:
+	@h='signal.h'							\
+	re='\<($(_sig_function_re)) *\(|\<($(_sig_syms_re))\>'		\
+	  $(_sc_header_without_use)
+
+# Don't include stdio--.h unless you use one of its functions.
+sc_prohibit_stdio--_without_use:
+	@h='stdio--.h' re='\<((f(re)?|p)open|tmpfile) *\('		\
+	  $(_sc_header_without_use)
+
+# Don't include stdio-safer.h unless you use one of its functions.
+sc_prohibit_stdio-safer_without_use:
+	@h='stdio-safer.h' re='\<((f(re)?|p)open|tmpfile)_safer *\('	\
+	  $(_sc_header_without_use)
+
+# Prohibit the inclusion of strings.h without a sensible use.
+# Using the likes of bcmp, bcopy, bzero, index or rindex is not sensible.
+sc_prohibit_strings_without_use:
+	@h='strings.h'							\
+	re='\<(strn?casecmp|ffs(ll)?)\>'				\
+	  $(_sc_header_without_use)
+
+# Extract the raw list of symbol names with this:
+gl_extract_define_simple = \
+  /^\# *define ([A-Z]\w+)\(/ and print $$1
+# Filter out duplicates and convert to a space-separated list:
+_intprops_names = \
+  $(shell f=$(gnulib_dir)/lib/intprops.h;				\
+    perl -lne '$(gl_extract_define_simple)' $$f | sort -u | tr '\n' ' ')
+# Remove trailing space and convert to a regular expression:
+_intprops_syms_re = $(subst $(_sp),|,$(strip $(_intprops_names)))
+# Prohibit the inclusion of intprops.h without an actual use.
+sc_prohibit_intprops_without_use:
+	@h='intprops.h'							\
+	re='\<($(_intprops_syms_re)) *\('				\
+	  $(_sc_header_without_use)
+
+_stddef_syms_re = NULL|offsetof|ptrdiff_t|size_t|wchar_t
+# Prohibit the inclusion of stddef.h without an actual use.
+sc_prohibit_stddef_without_use:
+	@h='stddef.h'							\
+	re='\<($(_stddef_syms_re))\>'					\
+	  $(_sc_header_without_use)
+
+_de1 = dirfd|(close|(fd)?open|read|rewind|seek|tell)dir(64)?(_r)?
+_de2 = (versionsort|struct dirent|getdirentries|alphasort|scandir(at)?)(64)?
+_de3 = MAXNAMLEN|DIR|ino_t|d_ino|d_fileno|d_namlen
+_dirent_syms_re = $(_de1)|$(_de2)|$(_de3)
+# Prohibit the inclusion of dirent.h without an actual use.
+sc_prohibit_dirent_without_use:
+	@h='dirent.h'							\
+	re='\<($(_dirent_syms_re))\>'					\
+	  $(_sc_header_without_use)
+
+# Prohibit the inclusion of verify.h without an actual use.
+sc_prohibit_verify_without_use:
+	@h='verify.h'							\
+	re='\<(verify(true|expr)?|assume|static_assert) *\('		\
+	  $(_sc_header_without_use)
+
+# Don't include xfreopen.h unless you use one of its functions.
+sc_prohibit_xfreopen_without_use:
+	@h='xfreopen.h' re='\<xfreopen *\(' $(_sc_header_without_use)
+
+sc_obsolete_symbols:
+	@prohibit='\<(HAVE''_FCNTL_H|O''_NDELAY)\>'			\
+	halt='do not use HAVE''_FCNTL_H or O'_NDELAY			\
+	  $(_sc_search_regexp)
+
+# FIXME: warn about definitions of EXIT_FAILURE, EXIT_SUCCESS, STREQ
+
+# Each nonempty ChangeLog line must start with a year number, or a TAB.
+sc_changelog:
+	@prohibit='^[^12	]'					\
+	in_vc_files='^ChangeLog$$'					\
+	halt='found unexpected prefix in a ChangeLog'			\
+	  $(_sc_search_regexp)
+
+# Ensure that each .c file containing a "main" function also
+# calls bindtextdomain.
+sc_bindtextdomain:
+	@require='bindtextdomain *\('					\
+	in_vc_files='\.c$$'						\
+	containing='\<main *('						\
+	halt='the above files do not call bindtextdomain'		\
+	  $(_sc_search_regexp)
+
+# Require that the final line of each test-lib.sh-using test be this one:
+# Exit $fail
+# Note: this test requires GNU grep's --label= option.
+Exit_witness_file ?= tests/test-lib.sh
+Exit_base := $(notdir $(Exit_witness_file))
+sc_require_test_exit_idiom:
+	@if test -f $(srcdir)/$(Exit_witness_file); then		\
+	  die=0;							\
+	  for i in $$($(GREP) -l -F 'srcdir/$(Exit_base)'		\
+		$$($(VC_LIST) tests)); do				\
+	    tail -n1 $$i | $(GREP) '^Exit .' > /dev/null		\
+	      && : || { die=1; echo $$i; }				\
+	  done;								\
+	  test $$die = 1 &&						\
+	    { echo 1>&2 '$(ME): the final line in each of the above is not:'; \
+	      echo 1>&2 'Exit something';				\
+	      exit 1; } || :;						\
+	fi
+
+sc_trailing_blank:
+	@prohibit='[	 ]$$'						\
+	halt='found trailing blank(s)'					\
+	exclude='^Binary file .* matches$$'				\
+	  $(_sc_search_regexp)
+
+# Match lines like the following, but where there is only one space
+# between the options and the description:
+#   -D, --all-repeated[=delimit-method]  print all duplicate lines\n
+longopt_re = --[a-z][0-9A-Za-z-]*(\[?=[0-9A-Za-z-]*\]?)?
+sc_two_space_separator_in_usage:
+	@prohibit='^   *(-[A-Za-z],)? $(longopt_re) [^ ].*\\$$'		\
+	halt='help2man requires at least two spaces between an option and its description'\
+	  $(_sc_search_regexp)
+
+# A regexp matching function names like "error" that may be used
+# to emit translatable messages.
+_gl_translatable_diag_func_re ?= error
+
+# Look for diagnostics that aren't marked for translation.
+# This won't find any for which error's format string is on a separate line.
+sc_unmarked_diagnostics:
+	@prohibit='\<$(_gl_translatable_diag_func_re) *\([^"]*"[^"]*[a-z]{3}' \
+	exclude='(_|ngettext ?)\('					\
+	halt='found unmarked diagnostic(s)'				\
+	  $(_sc_search_regexp)
+
+# Avoid useless parentheses like those in this example:
+# #if defined (SYMBOL) || defined (SYM2)
+sc_useless_cpp_parens:
+	@prohibit='^# *if .*defined *\('				\
+	halt='found useless parentheses in cpp directive'		\
+	  $(_sc_search_regexp)
+
+# List headers for which HAVE_HEADER_H is always true, assuming you are
+# using the appropriate gnulib module.  CAUTION: for each "unnecessary"
+# #if HAVE_HEADER_H that you remove, be sure that your project explicitly
+# requires the gnulib module that guarantees the usability of that header.
+gl_assured_headers_ = \
+  cd $(gnulib_dir)/lib && echo *.in.h|$(SED) 's/\.in\.h//g'
+
+# Convert the list of names to upper case, and replace each space with "|".
+az_ = abcdefghijklmnopqrstuvwxyz
+AZ_ = ABCDEFGHIJKLMNOPQRSTUVWXYZ
+gl_header_upper_case_or_ =						\
+  $$($(gl_assured_headers_)						\
+    | tr $(az_)/.- $(AZ_)___						\
+    | tr -s ' ' '|'							\
+    )
+sc_prohibit_always_true_header_tests:
+	@or=$(gl_header_upper_case_or_);				\
+	re="HAVE_($$or)_H";						\
+	prohibit='\<'"$$re"'\>'						\
+	halt=$$(printf '%s\n'						\
+	'do not test the above HAVE_<header>_H symbol(s);'		\
+	'  with the corresponding gnulib module, they are always true')	\
+	  $(_sc_search_regexp)
+
+sc_prohibit_defined_have_decl_tests:
+	@prohibit='(#[	 ]*ifn?def|\<defined)\>[	 (]+HAVE_DECL_'	\
+	halt='HAVE_DECL macros are always defined'			\
+	  $(_sc_search_regexp)
+
+# ==================================================================
+gl_other_headers_ ?= \
+  intprops.h	\
+  openat.h	\
+  stat-macros.h
+
+# Perl -lne code to extract "significant" cpp-defined symbols from a
+# gnulib header file, eliminating a few common false-positives.
+# The exempted names below are defined only conditionally in gnulib,
+# and hence sometimes must/may be defined in application code.
+gl_extract_significant_defines_ = \
+  /^\# *define ([^_ (][^ (]*)(\s*\(|\s+\w+)/\
+    && $$2 !~ /(?:rpl_|_used_without_)/\
+    && $$1 !~ /^(?:NSIG|ENODATA)$$/\
+    && $$1 !~ /^(?:SA_RESETHAND|SA_RESTART)$$/\
+    and print $$1
+
+# Create a list of regular expressions matching the names
+# of macros that are guaranteed to be defined by parts of gnulib.
+define def_sym_regex
+	gen_h=$(gl_generated_headers_);					\
+	(cd $(gnulib_dir)/lib;						\
+	  for f in *.in.h $(gl_other_headers_); do			\
+	    test -f $$f							\
+	      && perl -lne '$(gl_extract_significant_defines_)' $$f;	\
+	  done;								\
+	) | sort -u							\
+	  | $(SED) 's/^/^ *# *(define|undef)  */;s/$$/\\>/'
+endef
+
+# Don't define macros that we already get from gnulib header files.
+sc_prohibit_always-defined_macros:
+	@if test -d $(gnulib_dir); then					\
+	  case $$(echo all: | $(GREP) -l -f - Makefile) in Makefile);; *) \
+	    echo '$(ME): skipping $@: you lack GNU grep' 1>&2; exit 0;;	\
+	  esac;								\
+	  regex=$$($(def_sym_regex)); export regex;			\
+	  $(VC_LIST_EXCEPT)						\
+	    | xargs sh -c 'echo $$regex | $(GREP) -E -f - "$$@"'	\
+		dummy /dev/null						\
+	    && { printf '$(ME): define the above'			\
+			' via some gnulib .h file\n' 1>&2;		\
+		 exit 1; }						\
+	    || :;							\
+	fi
+# ==================================================================
+
+# Prohibit checked in backup files.
+sc_prohibit_backup_files:
+	@$(VC_LIST) | $(GREP) '~$$' &&					\
+	  { echo '$(ME): found version controlled backup file' 1>&2;	\
+	    exit 1; } || :
+
+# Require the latest GPL.
+sc_GPL_version:
+	@prohibit='either ''version [^3]'				\
+	halt='GPL vN, N!=3'						\
+	  $(_sc_search_regexp)
+
+# Require the latest GFDL.  Two regexp, since some .texi files end up
+# line wrapping between 'Free Documentation License,' and 'Version'.
+_GFDL_regexp = (Free ''Documentation.*Version 1\.[^3]|Version 1\.[^3] or any)
+sc_GFDL_version:
+	@prohibit='$(_GFDL_regexp)'					\
+	halt='GFDL vN, N!=3'						\
+	  $(_sc_search_regexp)
+
+# Don't use Texinfo's @acronym{}.
+# https://lists.gnu.org/r/bug-gnulib/2010-03/msg00321.html
+texinfo_suffix_re_ ?= \.(txi|texi(nfo)?)$$
+sc_texinfo_acronym:
+	@prohibit='@acronym\{'						\
+	in_vc_files='$(texinfo_suffix_re_)'				\
+	halt='found use of Texinfo @acronym{}'				\
+	  $(_sc_search_regexp)
+
+cvs_keywords = \
+  Author|Date|Header|Id|Name|Locker|Log|RCSfile|Revision|Source|State
+
+sc_prohibit_cvs_keyword:
+	@prohibit='\$$($(cvs_keywords))\$$'				\
+	halt='do not use CVS keyword expansion'				\
+	  $(_sc_search_regexp)
+
+# This Perl code is slightly obfuscated.  Not only is each "$" doubled
+# because it's in a Makefile, but the $$c's are comments;  we cannot
+# use "#" due to the way the script ends up concatenated onto one line.
+# It would be much more concise, and would produce better output (including
+# counts) if written as:
+#   perl -ln -0777 -e '/\n(\n+)$/ and print "$ARGV: ".length $1' ...
+# but that would be far less efficient, reading the entire contents
+# of each file, rather than just the last two bytes of each.
+# In addition, while the code below detects both blank lines and a missing
+# newline at EOF, the above detects only the former.
+#
+# This is a perl script that is expected to be the single-quoted argument
+# to a command-line "-le".  The remaining arguments are file names.
+# Print the name of each file that does not end in exactly one newline byte.
+# I.e., warn if there are blank lines (2 or more newlines), or if the
+# last byte is not a newline.  However, currently we don't complain
+# about any file that contains exactly one byte.
+# Exit nonzero if at least one such file is found, otherwise, exit 0.
+# Warn about, but otherwise ignore open failure.  Ignore seek/read failure.
+#
+# Use this if you want to remove trailing empty lines from selected files:
+#   perl -pi -0777 -e 's/\n\n+$/\n/' files...
+#
+require_exactly_one_NL_at_EOF_ =					\
+  foreach my $$f (@ARGV)						\
+    {									\
+      open F, "<", $$f or (warn "failed to open $$f: $$!\n"), next;	\
+      my $$p = sysseek (F, -2, 2);					\
+      my $$c = "seek failure probably means file has < 2 bytes; ignore"; \
+      my $$last_two_bytes;						\
+      defined $$p and $$p = sysread F, $$last_two_bytes, 2;		\
+      close F;								\
+      $$c = "ignore read failure";					\
+      $$p && ($$last_two_bytes eq "\n\n"				\
+              || substr ($$last_two_bytes,1) ne "\n")			\
+          and (print $$f), $$fail=1;					\
+    }									\
+  END { exit defined $$fail }
+sc_prohibit_empty_lines_at_EOF:
+	@$(VC_LIST_EXCEPT)						\
+	  | xargs perl -le '$(require_exactly_one_NL_at_EOF_)'		\
+	  || { echo '$(ME): empty line(s) or no newline at EOF' 1>&2;	\
+	       exit 1; }						\
+	  || :
+
+# Make sure we don't use st_blocks.  Use ST_NBLOCKS instead.
+# This is a bit of a kludge, since it prevents use of the string
+# even in comments, but for now it does the job with no false positives.
+sc_prohibit_stat_st_blocks:
+	@prohibit='[.>]st_blocks'					\
+	halt='do not use st_blocks; use ST_NBLOCKS'			\
+	  $(_sc_search_regexp)
+
+# Make sure we don't define any S_IS* macros in src/*.c files.
+# They're already defined via gnulib's sys/stat.h replacement.
+sc_prohibit_S_IS_definition:
+	@prohibit='^ *# *define  *S_IS'					\
+	halt='do not define S_IS* macros; include <sys/stat.h>'		\
+	  $(_sc_search_regexp)
+
+# Perl block to convert a match to FILE_NAME:LINENO:TEST,
+# that is shared by two definitions below.
+perl_filename_lineno_text_ =						\
+    -e '  {'								\
+    -e '    $$n = ($$` =~ tr/\n/\n/ + 1);'				\
+    -e '    ($$v = $$&) =~ s/\n/\\n/g;'					\
+    -e '    print "$$ARGV:$$n:$$v\n";'					\
+    -e '  }'
+
+prohibit_doubled_words_ = \
+    the then in an on if is it but for or at and do to
+# expand the regex before running the check to avoid using expensive captures
+prohibit_doubled_word_expanded_ = \
+    $(join $(prohibit_doubled_words_),$(addprefix \s+,$(prohibit_doubled_words_)))
+prohibit_doubled_word_RE_ ?= \
+    /\b(?:$(subst $(_sp),|,$(prohibit_doubled_word_expanded_)))\b/gims
+prohibit_doubled_word_ =						\
+    -e 'while ($(prohibit_doubled_word_RE_))'				\
+    $(perl_filename_lineno_text_)
+
+# Define this to a regular expression that matches
+# any filename:dd:match lines you want to ignore.
+# The default is to ignore no matches.
+ignore_doubled_word_match_RE_ ?= ^$$
+
+sc_prohibit_doubled_word:
+	@$(VC_LIST_EXCEPT)						\
+	  | xargs perl -n -0777 $(prohibit_doubled_word_)		\
+	  | $(GREP) -vE '$(ignore_doubled_word_match_RE_)'		\
+	  | $(GREP) .							\
+	  && { echo '$(ME): doubled words' 1>&2; exit 1; }		\
+	  || :
+
+# A regular expression matching undesirable combinations of words like
+# "can not"; this matches them even when the two words appear on different
+# lines, but not when there is an intervening delimiter like "#" or "*".
+# Similarly undesirable, "See @xref{...}", since an @xref should start
+# a sentence.  Explicitly prohibit any prefix of "see" or "also".
+# Also prohibit a prefix matching "\w+ +".
+# @pxref gets the same see/also treatment and should be parenthesized;
+# presume it must *not* start a sentence.
+# POSIX spells it "timestamp" rather than "time\s+stamp", so we do, too.
+bad_xref_re_ ?= (?:[\w,:;] +|(?:see|also)\s+)\@xref\{
+bad_pxref_re_ ?= (?:[.!?]|(?:see|also))\s+\@pxref\{
+prohibit_undesirable_word_seq_RE_ ?=					\
+  /(?:\bcan\s+not\b|\btime\s+stamps?\b|$(bad_xref_re_)|$(bad_pxref_re_))/gims
+prohibit_undesirable_word_seq_ =					\
+    -e 'while ($(prohibit_undesirable_word_seq_RE_))'			\
+    $(perl_filename_lineno_text_)
+# Define this to a regular expression that matches
+# any filename:dd:match lines you want to ignore.
+# The default is to ignore no matches.
+ignore_undesirable_word_sequence_RE_ ?= ^$$
+
+sc_prohibit_undesirable_word_seq:
+	@$(VC_LIST_EXCEPT)						\
+	  | xargs perl -n -0777 $(prohibit_undesirable_word_seq_)	\
+	  | $(GREP) -vE '$(ignore_undesirable_word_sequence_RE_)'	\
+	  | $(GREP) .							\
+	  && { echo '$(ME): undesirable word sequence' >&2; exit 1; }   \
+	  || :
+
+# Except for shell files and for loops, double semicolon is probably a mistake
+sc_prohibit_double_semicolon:
+	@prohibit='; *;[	{} \]*(/[/*]|$$)'			\
+	in_vc_files='\.[chly]$$'					\
+	exclude='\bfor *\(.*\)'						\
+	halt="Double semicolon detected"				\
+	  $(_sc_search_regexp)
+
+_ptm1 = use "test C1 && test C2", not "test C1 -''a C2"
+_ptm2 = use "test C1 || test C2", not "test C1 -''o C2"
+# Using test's -a and -o operators is not portable.
+# We prefer test over [, since the latter is spelled [[ in configure.ac.
+sc_prohibit_test_minus_ao:
+	@prohibit='(\<test| \[+) .+ -[ao] '				\
+	halt='$(_ptm1); $(_ptm2)'					\
+	  $(_sc_search_regexp)
+
+# Avoid a test bashism.
+sc_prohibit_test_double_equal:
+	@prohibit='(\<test| \[+) .+ == '				\
+	containing='#! */bin/[a-z]*sh'					\
+	halt='use "test x = x", not "test x =''= x"'			\
+	  $(_sc_search_regexp)
+
+# Each program that uses proper_name_utf8 must link with one of the
+# ICONV libraries.  Otherwise, some ICONV library must appear in LDADD.
+# The perl -0777 invocation below extracts the possibly-multi-line
+# definition of LDADD from the appropriate Makefile.am and exits 0
+# when it contains "ICONV".
+sc_proper_name_utf8_requires_ICONV:
+	@progs=$$($(VC_LIST_EXCEPT)					\
+		    | xargs $(GREP) -l 'proper_name_utf8 ''("');	\
+	if test "x$$progs" != x; then					\
+	  fail=0;							\
+	  for p in $$progs; do						\
+	    dir=$$(dirname "$$p");					\
+	    perl -0777							\
+	      -ne 'exit !(/^LDADD =(.+?[^\\]\n)/ms && $$1 =~ /ICONV/)'	\
+	      $$dir/Makefile.am && continue;				\
+	    base=$$(basename "$$p" .c);					\
+	    $(GREP) "$${base}_LDADD.*ICONV)" $$dir/Makefile.am > /dev/null	\
+	      || { fail=1; echo 1>&2 "$(ME): $$p uses proper_name_utf8"; }; \
+	  done;								\
+	  test $$fail = 1 &&						\
+	    { echo 1>&2 '$(ME): the above do not link with any ICONV library'; \
+	      exit 1; } || :;						\
+	fi
+
+# Warn about "c0nst struct Foo const foo[]",
+# but not about "char const *const foo" or "#define const const".
+sc_redundant_const:
+	@prohibit='\bconst\b[[:space:][:alnum:]]{2,}\bconst\b'		\
+	halt='redundant "const" in declarations'			\
+	  $(_sc_search_regexp)
+
+sc_const_long_option:
+	@prohibit='^ *static.*struct option '				\
+	exclude='const struct option|struct option const'		\
+	halt='add "const" to the above declarations'			\
+	  $(_sc_search_regexp)
+
+NEWS_hash =								\
+  $$($(SED) -n '/^\*.* $(PREV_VERSION_REGEXP) ([0-9-]*)/,$$p'		\
+       $(srcdir)/NEWS							\
+     | perl -0777 -pe							\
+	's/^Copyright.+?Free\sSoftware\sFoundation,\sInc\.\n//ms'	\
+     | md5sum -								\
+     | $(SED) 's/ .*//')
+
+# Ensure that we don't accidentally insert an entry into an old NEWS block.
+sc_immutable_NEWS:
+	@if test -f $(srcdir)/NEWS; then				\
+	  test "$(NEWS_hash)" = '$(old_NEWS_hash)' && : ||		\
+	    { echo '$(ME): you have modified old NEWS' 1>&2; exit 1; };	\
+	fi
+
+# Update the hash stored above.  Do this after each release and
+# for any corrections to old entries.
+update-NEWS-hash: NEWS
+	perl -pi -e 's/^(old_NEWS_hash[ \t]+:?=[ \t]+).*/$${1}'"$(NEWS_hash)/" \
+	  $(srcdir)/cfg.mk
+
+# Ensure that we use only the standard $(VAR) notation,
+# not @...@ in Makefile.am, now that we can rely on automake
+# to emit a definition for each substituted variable.
+# However, there is still one case in which @VAR@ use is not just
+# legitimate, but actually required: when augmenting an automake-defined
+# variable with a prefix.  For example, gettext uses this:
+# MAKEINFO = env LANG= LC_MESSAGES= LC_ALL= LANGUAGE= @MAKEINFO@
+# otherwise, makeinfo would put German or French (current locale)
+# navigation hints in the otherwise-English documentation.
+#
+# Allow the package to add exceptions via a hook in cfg.mk;
+# for example, @PRAGMA_SYSTEM_HEADER@ can be permitted by
+# setting this to ' && !/PRAGMA_SYSTEM_HEADER/'.
+_makefile_at_at_check_exceptions ?=
+sc_makefile_at_at_check:
+	@perl -ne '/\@\w+\@/'						\
+          -e ' && !/(\w+)\s+=.*\@\1\@$$/'				\
+          -e ''$(_makefile_at_at_check_exceptions)			\
+	  -e 'and (print "$$ARGV:$$.: $$_"), $$m=1; END {exit !$$m}'	\
+	    $$($(VC_LIST_EXCEPT) | $(GREP) -E '(^|/)(Makefile\.am|[^/]+\.mk)$$') \
+	  && { echo '$(ME): use $$(...), not @...@' 1>&2; exit 1; } || :
+
+news-check: NEWS
+	$(AM_V_GEN)if $(SED) -n $(news-check-lines-spec)p $<		\
+	    | $(GREP) -E $(news-check-regexp) >/dev/null; then		\
+	  :;								\
+	else								\
+	  echo 'NEWS: $$(news-check-regexp) failed to match' 1>&2;	\
+	  exit 1;							\
+	fi
+
+sc_makefile_TAB_only_indentation:
+	@prohibit='^	[ ]{8}'						\
+	in_vc_files='akefile|\.mk$$'					\
+	halt='found TAB-8-space indentation'				\
+	  $(_sc_search_regexp)
+
+sc_m4_quote_check:
+	@prohibit='(AC_DEFINE(_UNQUOTED)?|AC_DEFUN)\([^[]'		\
+	in_vc_files='(^configure\.ac|\.m4)$$'				\
+	halt='quote the first arg to AC_DEF*'				\
+	  $(_sc_search_regexp)
+
+fix_po_file_diag = \
+'you have changed the set of files with translatable diagnostics;\n\
+apply the above patch\n'
+
+# Generate a list of files in which to search for translatable strings.
+perl_translatable_files_list_ =						\
+  -e 'foreach $$file (@ARGV) {'						\
+  -e '	\# Consider only file extensions with one or two letters'	\
+  -e '	$$file =~ /\...?$$/ or next;'					\
+  -e '	\# Ignore m4 and mk files'					\
+  -e '	$$file =~ /\.m[4k]$$/ and next;'				\
+  -e '	\# Ignore a .c or .h file with a corresponding .l or .y file'	\
+  -e '	$$file =~ /(.+)\.[ch]$$/ && (-e "$${1}.l" || -e "$${1}.y")'	\
+  -e '	  and next;'							\
+  -e '	\# Skip unreadable files'					\
+  -e '	-r $$file or next;'						\
+  -e '	print "$$file ";'						\
+  -e '}'
+
+# Verify that all source files using _() (more specifically, files that
+# match $(_gl_translatable_string_re)) are listed in po/POTFILES.in.
+po_file ?= $(srcdir)/po/POTFILES.in
+generated_files ?= $(srcdir)/lib/*.[ch]
+_gl_translatable_string_re ?= \b(N?_|gettext *)\([^)"]*("|$$)
+sc_po_check:
+	@if test -f $(po_file); then					\
+	  $(GREP) -E -v '^(#|$$)' $(po_file)				\
+	    | $(GREP) -v '^src/false\.c$$' | sort > $@-1;		\
+	  { $(VC_LIST_EXCEPT); echo $(generated_files); }		\
+	    | xargs perl $(perl_translatable_files_list_)		\
+	    | xargs $(GREP) -E -l '$(_gl_translatable_string_re)'	\
+	    | $(SED) 's|^$(_dot_escaped_srcdir)/||'			\
+	    | sort -u > $@-2;						\
+	  diff -u -L $(po_file) -L $(po_file) $@-1 $@-2			\
+	    || { printf '$(ME): '$(fix_po_file_diag) 1>&2; exit 1; };	\
+	  rm -f $@-1 $@-2;						\
+	fi
+
+# Sometimes it is useful to change the PATH environment variable
+# in Makefiles.  When doing so, it's better not to use the Unix-centric
+# path separator of ':', but rather the automake-provided '$(PATH_SEPARATOR)'.
+msg = 'Do not use ":" above; use $$(PATH_SEPARATOR) instead'
+sc_makefile_path_separator_check:
+	@prohibit='PATH[=].*:'						\
+	in_vc_files='akefile|\.mk$$'					\
+	halt=$(msg)							\
+	  $(_sc_search_regexp)
+
+# Check that 'make alpha' will not fail at the end of the process,
+# i.e., when pkg-M.N.tar.xz already exists (either in "." or in ../release)
+# and is read-only.
+writable-files:
+	$(AM_V_GEN)if test -d $(release_archive_dir); then		\
+	  for file in $(DIST_ARCHIVES); do				\
+	    for p in ./ $(release_archive_dir)/; do			\
+	      test -e $$p$$file || continue;				\
+	      test -w $$p$$file						\
+		|| { echo ERROR: $$p$$file is not writable; fail=1; };	\
+	    done;							\
+	  done;								\
+	  test "$$fail" && exit 1 || : ;				\
+	else :;								\
+	fi
+
+v_etc_file = $(gnulib_dir)/lib/version-etc.c
+sample-test = tests/sample-test
+texi = doc/$(PACKAGE).texi
+# Make sure that the copyright date in $(v_etc_file) is up to date.
+# Do the same for the $(sample-test) and the main doc/.texi file.
+sc_copyright_check:
+	@require='enum { COPYRIGHT_YEAR = '$$(date +%Y)' };'		\
+	in_files=$(v_etc_file)						\
+	halt='out of date copyright in $(v_etc_file); update it'	\
+	  $(_sc_search_regexp)
+	@require='# Copyright \(C\) '$$(date +%Y)' Free'		\
+	in_vc_files=$(sample-test)					\
+	halt='out of date copyright in $(sample-test); update it'	\
+	  $(_sc_search_regexp)
+	@require='Copyright @copyright\{\} .*'$$(date +%Y)		\
+	in_vc_files=$(texi)						\
+	halt='out of date copyright in $(texi); update it'		\
+	  $(_sc_search_regexp)
+
+# If tests/help-version exists and seems to be new enough, assume that its
+# use of init.sh and path_prepend_ is correct, and ensure that every other
+# use of init.sh is identical.
+# This is useful because help-version cross-checks prog --version
+# with $(VERSION), which verifies that its path_prepend_ invocation
+# sets PATH correctly.  This is an inexpensive way to ensure that
+# the other init.sh-using tests also get it right.
+_hv_file ?= $(srcdir)/tests/help-version
+_hv_regex_weak ?= ^ *\. .*/init\.sh"
+# Fix syntax-highlighters "
+_hv_regex_strong ?= ^ *\. "\$${srcdir=\.}/init\.sh"
+sc_cross_check_PATH_usage_in_tests:
+	@if test -f $(_hv_file); then					\
+	  $(GREP) -l 'VERSION mismatch' $(_hv_file) >/dev/null		\
+	    || { echo "$@: skipped: no such file: $(_hv_file)" 1>&2;	\
+		 exit 0; };						\
+	  $(GREP) -lE '$(_hv_regex_strong)' $(_hv_file) >/dev/null	\
+	    || { echo "$@: $(_hv_file) lacks conforming use of init.sh" 1>&2; \
+		 exit 1; };						\
+	  good=$$($(GREP) -E '$(_hv_regex_strong)' $(_hv_file));	\
+	  $(VC_LIST_EXCEPT)						\
+	    | xargs $(GREP) -lE '$(_hv_regex_weak)'			\
+	    | xargs $(GREP) -LFx "$$good"				\
+	    | $(GREP) .							\
+	    && { printf "$(ME): the above files use"			\
+			" path_prepend_ inconsistently\n" 1>&2;		\
+		 exit 1; }						\
+	    || :;							\
+	fi
+
+# BRE regex of file contents to identify a test script.
+_test_script_regex ?= \<init\.sh\>
+
+# In tests, use "compare expected actual", not the reverse.
+sc_prohibit_reversed_compare_failure:
+	@prohibit='\<compare [^ ]+ ([^ ]*exp|/dev/null)'		\
+	containing='$(_test_script_regex)'				\
+	halt='reversed compare arguments'				\
+	  $(_sc_search_regexp)
+
+# #if HAVE_... will evaluate to false for any non numeric string.
+# That would be flagged by using -Wundef, however gnulib currently
+# tests many undefined macros, and so we can't enable that option.
+# So at least preclude common boolean strings as macro values.
+sc_Wundef_boolean:
+	@prohibit='^#define.*(yes|no|true|false)$$'			\
+	in_files='$(CONFIG_INCLUDE)'					\
+	halt='Use 0 or 1 for macro values'				\
+	  $(_sc_search_regexp)
+
+# Even if you use pathmax.h to guarantee that PATH_MAX is defined, it might
+# not be constant, or might overflow a stack.  In general, use PATH_MAX as
+# a limit, not an array or alloca size.
+sc_prohibit_path_max_allocation:
+	@prohibit='(\balloca *\([^)]*|\[[^]]*)\bPATH_MAX'		\
+	halt='Avoid stack allocations of size PATH_MAX'			\
+	  $(_sc_search_regexp)
+
+sc_vulnerable_makefile_CVE-2009-4029:
+	@prohibit='perm -777 -exec chmod a\+rwx|chmod 777 \$$\(distdir\)' \
+	in_files='(^|/)Makefile\.in$$'					\
+	halt=$$(printf '%s\n'						\
+	  'the above files are vulnerable; beware of running'		\
+	  '  "make dist*" rules, and upgrade to fixed automake'		\
+	  '  see https://bugzilla.redhat.com/show_bug.cgi?id=542609 for details') \
+	  $(_sc_search_regexp)
+
+sc_vulnerable_makefile_CVE-2012-3386:
+	@prohibit='chmod a\+w \$$\(distdir\)'				\
+	in_files='(^|/)Makefile\.in$$'					\
+	halt=$$(printf '%s\n'						\
+	  'the above files are vulnerable; beware of running'		\
+	  '  "make distcheck", and upgrade to fixed automake'		\
+	  '  see https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-3386 for details') \
+	  $(_sc_search_regexp)
+
+vc-diff-check:
+	$(AM_V_GEN)(unset CDPATH; cd $(srcdir) && $(VC) diff) > vc-diffs || :
+	$(AM_V_at)if test -s vc-diffs; then			\
+	  cat vc-diffs;						\
+	  echo "Some files are locally modified:" 1>&2;		\
+	  exit 1;						\
+	else							\
+	  rm vc-diffs;						\
+	fi
+
+rel-files = $(DIST_ARCHIVES)
+
+gnulib-version = $$(cd $(gnulib_dir)				\
+                    && { git describe || git rev-parse --short=10 HEAD; } )
+bootstrap-tools ?= autoconf,automake,gnulib
+
+gpgv = $$(gpgv2 --version >/dev/null && echo gpgv2 || echo gpgv)
+# If it's not already specified, derive the GPG key ID from
+# the signed tag we've just applied to mark this release.
+gpg_key_ID ?=								\
+  $$(cd $(srcdir)							\
+     && git cat-file tag v$(VERSION)					\
+        | $(gpgv) --status-fd 1 --keyring /dev/null - - 2>/dev/null	\
+        | $(AWK) '/^\[GNUPG:\] ERRSIG / {print $$3; exit}')
+
+translation_project_ ?= coordinator@translationproject.org
+
+# Make info-gnu the default only for a stable release.
+announcement_Cc_stable = $(translation_project_), $(PACKAGE_BUGREPORT)
+announcement_mail_headers_stable =		\
+  To: info-gnu@gnu.org				\
+  Cc: $(announcement_Cc_)			\
+  Mail-Followup-To: $(PACKAGE_BUGREPORT)
+
+announcement_Cc_alpha = $(translation_project_)
+announcement_mail_headers_alpha =		\
+  To: $(PACKAGE_BUGREPORT)			\
+  Cc: $(announcement_Cc_)
+
+announcement_mail_Cc_beta = $(announcement_mail_Cc_alpha)
+announcement_mail_headers_beta = $(announcement_mail_headers_alpha)
+
+announcement_Cc_ ?= $(announcement_Cc_$(release-type))
+announcement_mail_headers_ ?= $(announcement_mail_headers_$(release-type))
+announcement: NEWS ChangeLog $(rel-files)
+# Not $(AM_V_GEN) since the output of this command serves as
+# announcement message: it would start with " GEN announcement".
+	$(AM_V_at)$(srcdir)/$(_build-aux)/announce-gen			\
+	    --mail-headers='$(announcement_mail_headers_)'		\
+	    --release-type=$(release-type)				\
+	    --package=$(PACKAGE)					\
+	    --prev=$(PREV_VERSION)					\
+	    --curr=$(VERSION)						\
+	    --gpg-key-id=$(gpg_key_ID)					\
+	    --srcdir=$(srcdir)						\
+	    --news=$(srcdir)/NEWS					\
+	    --bootstrap-tools=$(bootstrap-tools)			\
+	    $$(case ,$(bootstrap-tools), in (*,gnulib,*)		\
+	       echo --gnulib-version=$(gnulib-version);; esac)		\
+	    $(addprefix --url-dir=, $(url_dir_list))
+
+.PHONY: release-commit
+release-commit:
+	$(AM_V_GEN)cd $(srcdir)				\
+	  && $(_build-aux)/do-release-commit-and-tag	\
+	       -C $(abs_builddir) $(RELEASE)
+
+## ---------------- ##
+## Updating files.  ##
+## ---------------- ##
+
+ftp-gnu = https://ftp.gnu.org/gnu
+www-gnu = https://www.gnu.org
+
+upload_dest_dir_ ?= $(PACKAGE)
+upload_command =						\
+  $(srcdir)/$(_build-aux)/gnupload $(GNUPLOADFLAGS)		\
+  --to $(gnu_rel_host):$(upload_dest_dir_)			\
+  $(rel-files)
+emit_upload_commands:
+	@echo =====================================
+	@echo =====================================
+	@echo '$(upload_command)'
+	@echo '# send the ~/announce-$(my_distdir) e-mail'
+	@echo =====================================
+	@echo =====================================
+
+.PHONY: upload
+upload:
+	$(AM_V_GEN)$(upload_command)
+
+define emit-commit-log
+  printf '%s\n' 'maint: post-release administrivia' ''			\
+    '* NEWS: Add header line for next release.'				\
+    '* .prev-version: Record previous version.'				\
+    '* cfg.mk (old_NEWS_hash): Auto-update.'
+endef
+
+.PHONY: no-submodule-changes
+no-submodule-changes:
+	$(AM_V_GEN)if test -d $(srcdir)/.git				\
+		&& git --version >/dev/null 2>&1; then			\
+	  diff=$$(cd $(srcdir) && git submodule -q foreach		\
+		  git diff-index --name-only HEAD)			\
+	    || exit 1;							\
+	  case $$diff in '') ;;						\
+	    *) echo '$(ME): submodule files are locally modified:';	\
+		echo "$$diff"; exit 1;; esac;				\
+	else								\
+	  : ;								\
+	fi
+
+submodule-checks ?= no-submodule-changes public-submodule-commit
+
+# Ensure that each sub-module commit we're using is public.
+# Without this, it is too easy to tag and release code that
+# cannot be built from a fresh clone.
+.PHONY: public-submodule-commit
+public-submodule-commit:
+	$(AM_V_GEN)if test -d $(srcdir)/.git				\
+		&& git --version >/dev/null 2>&1; then			\
+	  cd $(srcdir) &&						\
+	  git submodule --quiet foreach					\
+	      'test "$$(git rev-parse "$$sha1")"			\
+		  = "$$(git merge-base origin "$$sha1")"'		\
+	    || { echo '$(ME): found non-public submodule commit' >&2;	\
+		 exit 1; };						\
+	else								\
+	  : ;								\
+	fi
+# This rule has a high enough utility/cost ratio that it should be a
+# dependent of "check" by default.  However, some of us do occasionally
+# commit a temporary change that deliberately points to a non-public
+# submodule commit, and want to be able to use rules like "make check".
+# In that case, run e.g., "make check gl_public_submodule_commit="
+# to disable this test.
+gl_public_submodule_commit ?= public-submodule-commit
+check: $(gl_public_submodule_commit)
+
+.PHONY: alpha beta stable release
+ALL_RECURSIVE_TARGETS += alpha beta stable
+alpha beta stable: $(local-check) writable-files $(submodule-checks)
+	$(AM_V_GEN)test $@ = stable					\
+	  && { echo $(VERSION) | $(GREP) -E '^[0-9]+(\.[0-9]+)+$$'	\
+	       || { echo "invalid version string: $(VERSION)" 1>&2; exit 1;};}\
+	  || :
+	$(AM_V_at)$(MAKE) vc-diff-check
+	$(AM_V_at)$(MAKE) news-check
+	$(AM_V_at)$(MAKE) distcheck
+	$(AM_V_at)$(MAKE) dist
+	$(AM_V_at)$(MAKE) $(release-prep-hook) RELEASE_TYPE=$@
+	$(AM_V_at)$(MAKE) -s emit_upload_commands RELEASE_TYPE=$@
+
+release:
+	$(AM_V_GEN)$(MAKE) _version
+	$(AM_V_GEN)$(MAKE) $(release-type)
+
+# Override this in cfg.mk if you follow different procedures.
+release-prep-hook ?= release-prep
+
+gl_noteworthy_news_ = * Noteworthy changes in release ?.? (????-??-??) [?]
+.PHONY: release-prep
+release-prep:
+	$(AM_V_GEN)$(MAKE) --no-print-directory -s announcement \
+	  > ~/announce-$(my_distdir)
+	$(AM_V_at)if test -d $(release_archive_dir); then	\
+	  ln $(rel-files) $(release_archive_dir);		\
+	  chmod a-w $(rel-files);				\
+	fi
+	$(AM_V_at)echo $(VERSION) > $(prev_version_file)
+	$(AM_V_at)$(MAKE) update-NEWS-hash
+	$(AM_V_at)perl -pi						\
+	  -e '$$. == 3 and print "$(gl_noteworthy_news_)\n\n\n"'	\
+	  $(srcdir)/NEWS
+	$(AM_V_at)msg=$$($(emit-commit-log)) || exit 1;		\
+	cd $(srcdir) && $(VC) commit -m "$$msg" -a
+
+# Override this with e.g., -s $(srcdir)/some_other_name.texi
+# if the default $(PACKAGE)-derived name doesn't apply.
+gendocs_options_ ?=
+
+.PHONY: web-manual
+web-manual:
+	$(AM_V_GEN)test -z "$(manual_title)" \
+	  && { echo define manual_title in cfg.mk 1>&2; exit 1; } || :
+	$(AM_V_at)cd '$(srcdir)/doc'; \
+	  $(SHELL) ../$(_build-aux)/gendocs.sh $(gendocs_options_) \
+	     -o '$(abs_builddir)/doc/manual' \
+	     --email $(PACKAGE_BUGREPORT) $(PACKAGE) \
+	    "$(PACKAGE_NAME) - $(manual_title)"
+	$(AM_V_at)echo " *** Upload the doc/manual directory to web-cvs."
+
+.PHONY: web-manual-update
+web-manual-update:
+	$(AM_V_GEN)cd $(srcdir) \
+	  && $(_build-aux)/gnu-web-doc-update -C $(abs_builddir)
+
+
+# Code Coverage
+
+init-coverage:
+	$(MAKE) $(AM_MAKEFLAGS) clean
+	lcov --directory . --zerocounters
+
+COVERAGE_CCOPTS ?= "-g --coverage"
+COVERAGE_OUT ?= doc/coverage
+
+build-coverage:
+	$(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS)
+	$(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS) check
+	mkdir -p $(COVERAGE_OUT)
+	lcov --directory . --output-file $(COVERAGE_OUT)/$(PACKAGE).info \
+		--capture
+
+gen-coverage:
+	genhtml --output-directory $(COVERAGE_OUT) \
+		$(COVERAGE_OUT)/$(PACKAGE).info \
+		--highlight --frames --legend \
+		--title "$(PACKAGE_NAME)"
+
+coverage:
+	$(MAKE) init-coverage
+	$(MAKE) build-coverage
+	$(MAKE) gen-coverage
+
+# Some projects carry local adjustments for gnulib modules via patches in
+# a gnulib patch directory whose default name is gl/ (defined in bootstrap
+# via local_gl_dir=gl).  Those patches become stale as the originals evolve
+# in gnulib.  Use this rule to refresh any stale patches.  It applies each
+# patch to the original in $(gnulib_dir) and uses the temporary result to
+# generate a fuzz-free .diff file.  If you customize the name of your local
+# gnulib patch directory via bootstrap.conf, this rule detects that name.
+# Run this from a non-VPATH (i.e., srcdir) build directory.
+.PHONY: refresh-gnulib-patches
+refresh-gnulib-patches:
+	gl=gl;								\
+	if test -f bootstrap.conf; then					\
+	  t=$$(perl -lne '/^\s*local_gl_dir=(\S+)/ and $$d=$$1;'	\
+	       -e 'END{defined $$d and print $$d}' bootstrap.conf);	\
+	  test -n "$$t" && gl=$$t;					\
+	fi;								\
+	for diff in $$(cd $$gl; git ls-files | $(GREP) '\.diff$$'); do	\
+	  b=$$(printf %s "$$diff"|$(SED) 's/\.diff$$//');		\
+	  VERSION_CONTROL=none						\
+	    patch "$(gnulib_dir)/$$b" "$$gl/$$diff" || exit 1;		\
+	  ( cd $(gnulib_dir) || exit 1;					\
+	    git diff "$$b" > "../$$gl/$$diff";				\
+	    git checkout $$b ) || exit 1;				\
+	done
+
+# Update gettext files.
+PACKAGE ?= $(shell basename $(PWD))
+PO_DOMAIN ?= $(PACKAGE)
+POURL = https://translationproject.org/latest/$(PO_DOMAIN)/
+PODIR ?= po
+refresh-po:
+	rm -f $(PODIR)/*.po && \
+	echo "$(ME): getting translations into po (please ignore the robots.txt ERROR 404)..." && \
+	wget --no-verbose --directory-prefix $(PODIR) --no-directories --recursive --level 1 --accept .po --accept .po.1 $(POURL) && \
+	echo 'en@boldquot' > $(PODIR)/LINGUAS && \
+	echo 'en@quot' >> $(PODIR)/LINGUAS && \
+	ls $(PODIR)/*.po | $(SED) 's/\.po//;s,$(PODIR)/,,' | \
+	  sort >> $(PODIR)/LINGUAS
+
+ # Running indent once is not idempotent, but running it twice is.
+INDENT_SOURCES ?= $(C_SOURCES)
+.PHONY: indent
+indent:
+	indent $(INDENT_SOURCES)
+	indent $(INDENT_SOURCES)
+
+# If you want to set UPDATE_COPYRIGHT_* environment variables,
+# put the assignments in this variable.
+update-copyright-env ?=
+
+# Run this rule once per year (usually early in January)
+# to update all FSF copyright year lists in your project.
+# If you have an additional project-specific rule,
+# add it in cfg.mk along with a line 'update-copyright: prereq'.
+# By default, exclude all variants of COPYING; you can also
+# add exemptions (such as ChangeLog..* for rotated change logs)
+# in the file .x-update-copyright.
+.PHONY: update-copyright
+update-copyright:
+	$(AM_V_GEN)$(GREP) -l -w Copyright                               \
+	  $$(export VC_LIST_EXCEPT_DEFAULT=COPYING && $(VC_LIST_EXCEPT)) \
+	  | $(update-copyright-env) xargs $(srcdir)/$(_build-aux)/$@
+
+# This tight_scope test is skipped with a warning if $(_gl_TS_headers) is not
+# overridden and $(_gl_TS_dir)/Makefile.am does not mention noinst_HEADERS.
+
+# NOTE: to override any _gl_TS_* default value, you must
+# define the variable(s) using "export" in cfg.mk.
+_gl_TS_dir ?= src
+
+ALL_RECURSIVE_TARGETS += sc_tight_scope
+sc_tight_scope: tight-scope.mk
+	@fail=0;							\
+	if ! $(GREP) '^ *export _gl_TS_headers *=' $(srcdir)/cfg.mk	\
+		> /dev/null						\
+	   && ! $(GREP) -w noinst_HEADERS $(srcdir)/$(_gl_TS_dir)/Makefile.am \
+		> /dev/null 2>&1; then					\
+	    echo '$(ME): skipping $@';					\
+	else								\
+	    $(MAKE) -s -C $(_gl_TS_dir)					\
+		-f Makefile						\
+		-f $(abs_top_srcdir)/cfg.mk				\
+		-f $(abs_top_builddir)/$<				\
+	      _gl_tight_scope						\
+		|| fail=1;						\
+	fi;								\
+	rm -f $<;							\
+	exit $$fail
+
+tight-scope.mk: $(ME)
+	@rm -f $@ $@-t
+	@perl -ne '/^# TS-start/.../^# TS-end/ and print' $(srcdir)/$(ME) > $@-t
+	@chmod a=r $@-t && mv $@-t $@
+
+ifeq (a,b)
+# TS-start
+
+# Most functions should have static scope.
+# Any that don't must be marked with 'extern', but 'main'
+# and 'usage' are exceptions: they're always extern, but
+# do not need to be marked.  Symbols matching '__.*' are
+# reserved by the compiler, so are automatically excluded below.
+_gl_TS_unmarked_extern_functions ?= main usage
+_gl_TS_function_match ?= /^(?:$(_gl_TS_extern)) +.*?(\w+) *\(/
+
+# If your project uses a macro like "XTERN", then put
+# the following in cfg.mk to override this default:
+# export _gl_TS_extern = extern|XTERN
+_gl_TS_extern ?= extern
+
+# The second nm|grep checks for file-scope variables with 'extern' scope.
+# Without gnulib's progname module, you might put program_name here.
+# Symbols matching '__.*' are reserved by the compiler,
+# so are automatically excluded below.
+_gl_TS_unmarked_extern_vars ?=
+
+# NOTE: the _match variables are perl expressions -- not mere regular
+# expressions -- so that you can extend them to match other patterns
+# and easily extract matched variable names.
+# For example, if your project declares some global variables via
+# a macro like this: GLOBAL(type, var_name, initializer), then you
+# can override this definition to automatically extract those names:
+# export _gl_TS_var_match = \
+#   /^(?:$(_gl_TS_extern)) .*?\**(\w+)(\[.*?\])?;/ || /\bGLOBAL\(.*?,\s*(.*?),/
+_gl_TS_var_match ?= /^(?:$(_gl_TS_extern)) .*?(\w+)(\[.*?\])?;/
+
+# The names of object files in (or relative to) $(_gl_TS_dir).
+_gl_TS_obj_files ?= *.$(OBJEXT)
+
+# Files in which to search for the one-line style extern declarations.
+# $(_gl_TS_dir)-relative.
+_gl_TS_headers ?= $(noinst_HEADERS)
+_gl_TS_other_headers ?= *.h
+
+.PHONY: _gl_tight_scope
+_gl_tight_scope: $(bin_PROGRAMS)
+	sed_wrap='s/^/^_?/;s/$$/$$/';					\
+	t=exceptions-$$$$;						\
+	trap 's=$$?; rm -f $$t; exit $$s' 0;				\
+	for sig in 1 2 3 13 15; do					\
+	  eval "trap 'v=`expr $$sig + 128`; (exit $$v); exit $$v' $$sig"; \
+	done;								\
+	src=`for f in $(SOURCES); do					\
+	       test -f $$f && d= || d=$(srcdir)/; echo $$d$$f; done`;	\
+	hdr=`for f in $(_gl_TS_headers); do				\
+	       test -f $$f && d= || d=$(srcdir)/; echo $$d$$f; done`;	\
+	( printf '%s\n' '__.*' $(_gl_TS_unmarked_extern_functions);	\
+	  $(GREP) -h -A1 '^extern .*[^;]$$' $$src			\
+	    | $(GREP) -vE '^(extern |--|#)' | $(SED) 's/ .*//; /^$$/d';	\
+	  perl -lne							\
+	     '$(_gl_TS_function_match) and print $$1' $$hdr;		\
+	) | sort -u | $(SED) "$$sed_wrap" > $$t;			\
+	nm -g $(_gl_TS_obj_files)|$(SED) -n 's/.* T //p'|$(GREP) -Ev -f $$t \
+	  && { echo the above functions should have static scope >&2;	\
+	       exit 1; } || : ;						\
+	( printf '%s\n' '__.*' main $(_gl_TS_unmarked_extern_vars);	\
+	  perl -lne '$(_gl_TS_var_match) and print $$1'			\
+		$$hdr $(_gl_TS_other_headers)				\
+	) | sort -u | $(SED) "$$sed_wrap" > $$t;			\
+	nm -g $(_gl_TS_obj_files) | $(SED) -n 's/.* [BCDGRS] //p'	\
+            | sort -u | $(GREP) -Ev -f $$t				\
+	  && { echo the above variables should have static scope >&2;	\
+	       exit 1; } || :
+# TS-end
+endif
diff --git a/src/grep/po/LINGUAS b/src/grep/po/LINGUAS
new file mode 100644
index 0000000..66177cf
--- /dev/null
+++ b/src/grep/po/LINGUAS
@@ -0,0 +1,43 @@
+af
+be
+bg
+ca
+cs
+da
+de
+el
+eo
+es
+et
+eu
+fi
+fr
+ga
+gl
+he
+hr
+hu
+id
+it
+ja
+ko
+ky
+lt
+nb
+nl
+pa
+pl
+pt
+pt_BR
+ro
+ru
+sk
+sl
+sr
+sv
+th
+tr
+uk
+vi
+zh_CN
+zh_TW
diff --git a/src/grep/po/Makefile.in.in b/src/grep/po/Makefile.in.in
new file mode 100644
index 0000000..fce63a6
--- /dev/null
+++ b/src/grep/po/Makefile.in.in
@@ -0,0 +1,453 @@
+# Makefile for PO directory in any package using GNU gettext.
+# Copyright (C) 1995-1997, 2000-2007, 2009-2010 by Ulrich Drepper <drepper@gnu.ai.mit.edu>
+#
+# This file can be copied and used freely without restrictions.  It can
+# be used in projects which are not available under the GNU General Public
+# License but which still want to provide support for the GNU gettext
+# functionality.
+# Please note that the actual code of GNU gettext is covered by the GNU
+# General Public License and is *not* in the public domain.
+#
+# Origin: gettext-0.18.2
+GETTEXT_MACRO_VERSION = 0.18
+
+PACKAGE = @PACKAGE@
+VERSION = @VERSION@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+
+SHELL = /bin/sh
+@SET_MAKE@
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+datarootdir = @datarootdir@
+datadir = @datadir@
+localedir = @localedir@
+gettextsrcdir = $(datadir)/gettext/po
+
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+
+# We use $(mkdir_p).
+# In automake <= 1.9.x, $(mkdir_p) is defined either as "mkdir -p --" or as
+# "$(mkinstalldirs)" or as "$(install_sh) -d". For these automake versions,
+# @install_sh@ does not start with $(SHELL), so we add it.
+# In automake >= 1.10, @mkdir_p@ is derived from ${MKDIR_P}, which is defined
+# either as "/path/to/mkdir -p" or ".../install-sh -c -d". For these automake
+# versions, $(mkinstalldirs) and $(install_sh) are unused.
+mkinstalldirs = $(SHELL) @install_sh@ -d
+install_sh = $(SHELL) @install_sh@
+MKDIR_P = @MKDIR_P@
+mkdir_p = @mkdir_p@
+
+GMSGFMT_ = @GMSGFMT@
+GMSGFMT_no = @GMSGFMT@
+GMSGFMT_yes = @GMSGFMT_015@
+GMSGFMT = $(GMSGFMT_$(USE_MSGCTXT))
+MSGFMT_ = @MSGFMT@
+MSGFMT_no = @MSGFMT@
+MSGFMT_yes = @MSGFMT_015@
+MSGFMT = $(MSGFMT_$(USE_MSGCTXT))
+XGETTEXT_ = @XGETTEXT@
+XGETTEXT_no = @XGETTEXT@
+XGETTEXT_yes = @XGETTEXT_015@
+XGETTEXT = $(XGETTEXT_$(USE_MSGCTXT))
+MSGMERGE = msgmerge
+MSGMERGE_UPDATE = @MSGMERGE@ --update
+MSGINIT = msginit
+MSGCONV = msgconv
+MSGFILTER = msgfilter
+
+POFILES = @POFILES@
+GMOFILES = @GMOFILES@
+UPDATEPOFILES = @UPDATEPOFILES@
+DUMMYPOFILES = @DUMMYPOFILES@
+DISTFILES.common = Makefile.in.in remove-potcdate.sin \
+$(DISTFILES.common.extra1) $(DISTFILES.common.extra2) $(DISTFILES.common.extra3)
+DISTFILES = $(DISTFILES.common) Makevars POTFILES.in \
+$(POFILES) $(GMOFILES) \
+$(DISTFILES.extra1) $(DISTFILES.extra2) $(DISTFILES.extra3)
+
+POTFILES = \
+
+CATALOGS = @CATALOGS@
+
+# Makevars gets inserted here. (Don't remove this line!)
+
+.SUFFIXES:
+.SUFFIXES: .po .gmo .mo .sed .sin .nop .po-create .po-update
+
+.po.mo:
+	@echo "$(MSGFMT) -c -o $@ $<"; \
+	$(MSGFMT) -c -o t-$@ $< && mv t-$@ $@
+
+.po.gmo:
+	@lang=`echo $* | sed -e 's,.*/,,'`; \
+	test "$(srcdir)" = . && cdcmd="" || cdcmd="cd $(srcdir) && "; \
+	echo "$${cdcmd}rm -f $${lang}.gmo && $(GMSGFMT) -c --statistics --verbose -o $${lang}.gmo $${lang}.po"; \
+	cd $(srcdir) && rm -f $${lang}.gmo && $(GMSGFMT) -c --statistics --verbose -o t-$${lang}.gmo $${lang}.po && mv t-$${lang}.gmo $${lang}.gmo
+
+.sin.sed:
+	sed -e '/^#/d' $< > t-$@
+	mv t-$@ $@
+
+
+all: all-@USE_NLS@
+
+all-yes: stamp-po
+all-no:
+
+# Ensure that the gettext macros and this Makefile.in.in are in sync.
+CHECK_MACRO_VERSION = \
+	test "$(GETTEXT_MACRO_VERSION)" = "@GETTEXT_MACRO_VERSION@" \
+	  || { echo "*** error: gettext infrastructure mismatch: using a Makefile.in.in from gettext version $(GETTEXT_MACRO_VERSION) but the autoconf macros are from gettext version @GETTEXT_MACRO_VERSION@" 1>&2; \
+	       exit 1; \
+	     }
+
+# $(srcdir)/$(DOMAIN).pot is only created when needed. When xgettext finds no
+# internationalized messages, no $(srcdir)/$(DOMAIN).pot is created (because
+# we don't want to bother translators with empty POT files). We assume that
+# LINGUAS is empty in this case, i.e. $(POFILES) and $(GMOFILES) are empty.
+# In this case, stamp-po is a nop (i.e. a phony target).
+
+# stamp-po is a timestamp denoting the last time at which the CATALOGS have
+# been loosely updated. Its purpose is that when a developer or translator
+# checks out the package via CVS, and the $(DOMAIN).pot file is not in CVS,
+# "make" will update the $(DOMAIN).pot and the $(CATALOGS), but subsequent
+# invocations of "make" will do nothing. This timestamp would not be necessary
+# if updating the $(CATALOGS) would always touch them; however, the rule for
+# $(POFILES) has been designed to not touch files that don't need to be
+# changed.
+stamp-po: $(srcdir)/$(DOMAIN).pot
+	@$(CHECK_MACRO_VERSION)
+	test ! -f $(srcdir)/$(DOMAIN).pot || \
+	  test -z "$(GMOFILES)" || $(MAKE) $(GMOFILES)
+	@test ! -f $(srcdir)/$(DOMAIN).pot || { \
+	  echo "touch stamp-po" && \
+	  echo timestamp > stamp-poT && \
+	  mv stamp-poT stamp-po; \
+	}
+
+# Note: Target 'all' must not depend on target '$(DOMAIN).pot-update',
+# otherwise packages like GCC can not be built if only parts of the source
+# have been downloaded.
+
+# This target rebuilds $(DOMAIN).pot; it is an expensive operation.
+# Note that $(DOMAIN).pot is not touched if it doesn't need to be changed.
+# The determination of whether the package xyz is a GNU one is based on the
+# heuristic whether some file in the top level directory mentions "GNU xyz".
+# If GNU 'find' is available, we avoid grepping through monster files.
+$(DOMAIN).pot-update: $(POTFILES) $(srcdir)/POTFILES.in remove-potcdate.sed
+	if { if (LC_ALL=C find --version) 2>/dev/null | grep GNU >/dev/null; then \
+	       LC_ALL=C find -L $(top_srcdir) -maxdepth 1 -type f -size -10000000c -exec grep 'GNU @PACKAGE@' /dev/null '{}' ';' 2>/dev/null; \
+	     else \
+	       LC_ALL=C grep 'GNU @PACKAGE@' $(top_srcdir)/* 2>/dev/null; \
+	     fi; \
+	   } | grep -v 'libtool:' >/dev/null; then \
+	  package_gnu='GNU '; \
+	else \
+	  package_gnu=''; \
+	fi; \
+	if test -n '$(MSGID_BUGS_ADDRESS)' || test '$(PACKAGE_BUGREPORT)' = '@'PACKAGE_BUGREPORT'@'; then \
+	  msgid_bugs_address='$(MSGID_BUGS_ADDRESS)'; \
+	else \
+	  msgid_bugs_address='$(PACKAGE_BUGREPORT)'; \
+	fi; \
+	case `$(XGETTEXT) --version | sed 1q | sed -e 's,^[^0-9]*,,'` in \
+	  '' | 0.[0-9] | 0.[0-9].* | 0.1[0-5] | 0.1[0-5].* | 0.16 | 0.16.[0-1]*) \
+	    $(XGETTEXT) --default-domain=$(DOMAIN) --directory=$(top_srcdir) \
+	      --add-comments=TRANSLATORS: $(XGETTEXT_OPTIONS) @XGETTEXT_EXTRA_OPTIONS@ \
+	      --files-from=$(srcdir)/POTFILES.in \
+	      --copyright-holder='$(COPYRIGHT_HOLDER)' \
+	      --msgid-bugs-address="$$msgid_bugs_address" \
+	    ;; \
+	  *) \
+	    $(XGETTEXT) --default-domain=$(DOMAIN) --directory=$(top_srcdir) \
+	      --add-comments=TRANSLATORS: $(XGETTEXT_OPTIONS) @XGETTEXT_EXTRA_OPTIONS@ \
+	      --files-from=$(srcdir)/POTFILES.in \
+	      --copyright-holder='$(COPYRIGHT_HOLDER)' \
+	      --package-name="$${package_gnu}@PACKAGE@" \
+	      --package-version='@VERSION@' \
+	      --msgid-bugs-address="$$msgid_bugs_address" \
+	    ;; \
+	esac
+	test ! -f $(DOMAIN).po || { \
+	  if test -f $(srcdir)/$(DOMAIN).pot; then \
+	    sed -f remove-potcdate.sed < $(srcdir)/$(DOMAIN).pot > $(DOMAIN).1po && \
+	    sed -f remove-potcdate.sed < $(DOMAIN).po > $(DOMAIN).2po && \
+	    if cmp $(DOMAIN).1po $(DOMAIN).2po >/dev/null 2>&1; then \
+	      rm -f $(DOMAIN).1po $(DOMAIN).2po $(DOMAIN).po; \
+	    else \
+	      rm -f $(DOMAIN).1po $(DOMAIN).2po $(srcdir)/$(DOMAIN).pot && \
+	      mv $(DOMAIN).po $(srcdir)/$(DOMAIN).pot; \
+	    fi; \
+	  else \
+	    mv $(DOMAIN).po $(srcdir)/$(DOMAIN).pot; \
+	  fi; \
+	}
+
+# This rule has no dependencies: we don't need to update $(DOMAIN).pot at
+# every "make" invocation, only create it when it is missing.
+# Only "make $(DOMAIN).pot-update" or "make dist" will force an update.
+$(srcdir)/$(DOMAIN).pot:
+	$(MAKE) $(DOMAIN).pot-update
+
+# This target rebuilds a PO file if $(DOMAIN).pot has changed.
+# Note that a PO file is not touched if it doesn't need to be changed.
+$(POFILES): $(srcdir)/$(DOMAIN).pot
+	@lang=`echo $@ | sed -e 's,.*/,,' -e 's/\.po$$//'`; \
+	if test -f "$(srcdir)/$${lang}.po"; then \
+	  test "$(srcdir)" = . && cdcmd="" || cdcmd="cd $(srcdir) && "; \
+	  echo "$${cdcmd}$(MSGMERGE_UPDATE) $(MSGMERGE_OPTIONS) --lang=$${lang} $${lang}.po $(DOMAIN).pot"; \
+	  cd $(srcdir) \
+	    && { case `$(MSGMERGE_UPDATE) --version | sed 1q | sed -e 's,^[^0-9]*,,'` in \
+	           '' | 0.[0-9] | 0.[0-9].* | 0.1[0-7] | 0.1[0-7].*) \
+	             $(MSGMERGE_UPDATE) $(MSGMERGE_OPTIONS) $${lang}.po $(DOMAIN).pot;; \
+	           *) \
+	             $(MSGMERGE_UPDATE) $(MSGMERGE_OPTIONS) --lang=$${lang} $${lang}.po $(DOMAIN).pot;; \
+	         esac; \
+	       }; \
+	else \
+	  $(MAKE) $${lang}.po-create; \
+	fi
+
+
+install: install-exec install-data
+install-exec:
+install-data: install-data-@USE_NLS@
+	if test "$(PACKAGE)" = "gettext-tools"; then \
+	  $(mkdir_p) $(DESTDIR)$(gettextsrcdir); \
+	  for file in $(DISTFILES.common) Makevars.template; do \
+	    $(INSTALL_DATA) $(srcdir)/$$file \
+			    $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	  for file in Makevars; do \
+	    rm -f $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	else \
+	  : ; \
+	fi
+install-data-no: all
+install-data-yes: all
+	@catalogs='$(CATALOGS)'; \
+	for cat in $$catalogs; do \
+	  cat=`basename $$cat`; \
+	  lang=`echo $$cat | sed -e 's/\.gmo$$//'`; \
+	  dir=$(localedir)/$$lang/LC_MESSAGES; \
+	  $(mkdir_p) $(DESTDIR)$$dir; \
+	  if test -r $$cat; then realcat=$$cat; else realcat=$(srcdir)/$$cat; fi; \
+	  $(INSTALL_DATA) $$realcat $(DESTDIR)$$dir/$(DOMAIN).mo; \
+	  echo "installing $$realcat as $(DESTDIR)$$dir/$(DOMAIN).mo"; \
+	  for lc in '' $(EXTRA_LOCALE_CATEGORIES); do \
+	    if test -n "$$lc"; then \
+	      if (cd $(DESTDIR)$(localedir)/$$lang && LC_ALL=C ls -l -d $$lc 2>/dev/null) | grep ' -> ' >/dev/null; then \
+	        link=`cd $(DESTDIR)$(localedir)/$$lang && LC_ALL=C ls -l -d $$lc | sed -e 's/^.* -> //'`; \
+	        mv $(DESTDIR)$(localedir)/$$lang/$$lc $(DESTDIR)$(localedir)/$$lang/$$lc.old; \
+	        mkdir $(DESTDIR)$(localedir)/$$lang/$$lc; \
+	        (cd $(DESTDIR)$(localedir)/$$lang/$$lc.old && \
+	         for file in *; do \
+	           if test -f $$file; then \
+	             ln -s ../$$link/$$file $(DESTDIR)$(localedir)/$$lang/$$lc/$$file; \
+	           fi; \
+	         done); \
+	        rm -f $(DESTDIR)$(localedir)/$$lang/$$lc.old; \
+	      else \
+	        if test -d $(DESTDIR)$(localedir)/$$lang/$$lc; then \
+	          :; \
+	        else \
+	          rm -f $(DESTDIR)$(localedir)/$$lang/$$lc; \
+	          mkdir $(DESTDIR)$(localedir)/$$lang/$$lc; \
+	        fi; \
+	      fi; \
+	      rm -f $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo; \
+	      ln -s ../LC_MESSAGES/$(DOMAIN).mo $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo 2>/dev/null || \
+	      ln $(DESTDIR)$(localedir)/$$lang/LC_MESSAGES/$(DOMAIN).mo $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo 2>/dev/null || \
+	      cp -p $(DESTDIR)$(localedir)/$$lang/LC_MESSAGES/$(DOMAIN).mo $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo; \
+	      echo "installing $$realcat link as $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo"; \
+	    fi; \
+	  done; \
+	done
+
+install-strip: install
+
+installdirs: installdirs-exec installdirs-data
+installdirs-exec:
+installdirs-data: installdirs-data-@USE_NLS@
+	if test "$(PACKAGE)" = "gettext-tools"; then \
+	  $(mkdir_p) $(DESTDIR)$(gettextsrcdir); \
+	else \
+	  : ; \
+	fi
+installdirs-data-no:
+installdirs-data-yes:
+	@catalogs='$(CATALOGS)'; \
+	for cat in $$catalogs; do \
+	  cat=`basename $$cat`; \
+	  lang=`echo $$cat | sed -e 's/\.gmo$$//'`; \
+	  dir=$(localedir)/$$lang/LC_MESSAGES; \
+	  $(mkdir_p) $(DESTDIR)$$dir; \
+	  for lc in '' $(EXTRA_LOCALE_CATEGORIES); do \
+	    if test -n "$$lc"; then \
+	      if (cd $(DESTDIR)$(localedir)/$$lang && LC_ALL=C ls -l -d $$lc 2>/dev/null) | grep ' -> ' >/dev/null; then \
+	        link=`cd $(DESTDIR)$(localedir)/$$lang && LC_ALL=C ls -l -d $$lc | sed -e 's/^.* -> //'`; \
+	        mv $(DESTDIR)$(localedir)/$$lang/$$lc $(DESTDIR)$(localedir)/$$lang/$$lc.old; \
+	        mkdir $(DESTDIR)$(localedir)/$$lang/$$lc; \
+	        (cd $(DESTDIR)$(localedir)/$$lang/$$lc.old && \
+	         for file in *; do \
+	           if test -f $$file; then \
+	             ln -s ../$$link/$$file $(DESTDIR)$(localedir)/$$lang/$$lc/$$file; \
+	           fi; \
+	         done); \
+	        rm -f $(DESTDIR)$(localedir)/$$lang/$$lc.old; \
+	      else \
+	        if test -d $(DESTDIR)$(localedir)/$$lang/$$lc; then \
+	          :; \
+	        else \
+	          rm -f $(DESTDIR)$(localedir)/$$lang/$$lc; \
+	          mkdir $(DESTDIR)$(localedir)/$$lang/$$lc; \
+	        fi; \
+	      fi; \
+	    fi; \
+	  done; \
+	done
+
+# Define this as empty until I found a useful application.
+installcheck:
+
+uninstall: uninstall-exec uninstall-data
+uninstall-exec:
+uninstall-data: uninstall-data-@USE_NLS@
+	if test "$(PACKAGE)" = "gettext-tools"; then \
+	  for file in $(DISTFILES.common) Makevars.template; do \
+	    rm -f $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	else \
+	  : ; \
+	fi
+uninstall-data-no:
+uninstall-data-yes:
+	catalogs='$(CATALOGS)'; \
+	for cat in $$catalogs; do \
+	  cat=`basename $$cat`; \
+	  lang=`echo $$cat | sed -e 's/\.gmo$$//'`; \
+	  for lc in LC_MESSAGES $(EXTRA_LOCALE_CATEGORIES); do \
+	    rm -f $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo; \
+	  done; \
+	done
+
+check: all
+
+info dvi ps pdf html tags TAGS ctags CTAGS ID:
+
+mostlyclean:
+	rm -f remove-potcdate.sed
+	rm -f stamp-poT
+	rm -f core core.* $(DOMAIN).po $(DOMAIN).1po $(DOMAIN).2po *.new.po
+	rm -fr *.o
+
+clean: mostlyclean
+
+distclean: clean
+	rm -f Makefile Makefile.in POTFILES *.mo
+
+maintainer-clean: distclean
+	@echo "This command is intended for maintainers to use;"
+	@echo "it deletes files that may require special tools to rebuild."
+	rm -f stamp-po $(GMOFILES)
+
+distdir = $(top_builddir)/$(PACKAGE)-$(VERSION)/$(subdir)
+dist distdir:
+	$(MAKE) update-po
+	@$(MAKE) dist2
+# This is a separate target because 'update-po' must be executed before.
+dist2: stamp-po $(DISTFILES)
+	dists="$(DISTFILES)"; \
+	if test "$(PACKAGE)" = "gettext-tools"; then \
+	  dists="$$dists Makevars.template"; \
+	fi; \
+	if test -f $(srcdir)/$(DOMAIN).pot; then \
+	  dists="$$dists $(DOMAIN).pot stamp-po"; \
+	fi; \
+	if test -f $(srcdir)/ChangeLog; then \
+	  dists="$$dists ChangeLog"; \
+	fi; \
+	for i in 0 1 2 3 4 5 6 7 8 9; do \
+	  if test -f $(srcdir)/ChangeLog.$$i; then \
+	    dists="$$dists ChangeLog.$$i"; \
+	  fi; \
+	done; \
+	if test -f $(srcdir)/LINGUAS; then dists="$$dists LINGUAS"; fi; \
+	for file in $$dists; do \
+	  if test -f $$file; then \
+	    cp -p $$file $(distdir) || exit 1; \
+	  else \
+	    cp -p $(srcdir)/$$file $(distdir) || exit 1; \
+	  fi; \
+	done
+
+update-po: Makefile
+	$(MAKE) $(DOMAIN).pot-update
+	test -z "$(UPDATEPOFILES)" || $(MAKE) $(UPDATEPOFILES)
+	$(MAKE) update-gmo
+
+# General rule for creating PO files.
+
+.nop.po-create:
+	@lang=`echo $@ | sed -e 's/\.po-create$$//'`; \
+	echo "File $$lang.po does not exist. If you are a translator, you can create it through 'msginit'." 1>&2; \
+	exit 1
+
+# General rule for updating PO files.
+
+.nop.po-update:
+	@lang=`echo $@ | sed -e 's/\.po-update$$//'`; \
+	if test "$(PACKAGE)" = "gettext-tools"; then PATH=`pwd`/../src:$$PATH; fi; \
+	tmpdir=`pwd`; \
+	echo "$$lang:"; \
+	test "$(srcdir)" = . && cdcmd="" || cdcmd="cd $(srcdir) && "; \
+	echo "$${cdcmd}$(MSGMERGE) $(MSGMERGE_OPTIONS) --lang=$$lang $$lang.po $(DOMAIN).pot -o $$lang.new.po"; \
+	cd $(srcdir); \
+	if { case `$(MSGMERGE) --version | sed 1q | sed -e 's,^[^0-9]*,,'` in \
+	       '' | 0.[0-9] | 0.[0-9].* | 0.1[0-7] | 0.1[0-7].*) \
+	         $(MSGMERGE) $(MSGMERGE_OPTIONS) -o $$tmpdir/$$lang.new.po $$lang.po $(DOMAIN).pot;; \
+	       *) \
+	         $(MSGMERGE) $(MSGMERGE_OPTIONS) --lang=$$lang -o $$tmpdir/$$lang.new.po $$lang.po $(DOMAIN).pot;; \
+	     esac; \
+	   }; then \
+	  if cmp $$lang.po $$tmpdir/$$lang.new.po >/dev/null 2>&1; then \
+	    rm -f $$tmpdir/$$lang.new.po; \
+	  else \
+	    if mv -f $$tmpdir/$$lang.new.po $$lang.po; then \
+	      :; \
+	    else \
+	      echo "msgmerge for $$lang.po failed: cannot move $$tmpdir/$$lang.new.po to $$lang.po" 1>&2; \
+	      exit 1; \
+	    fi; \
+	  fi; \
+	else \
+	  echo "msgmerge for $$lang.po failed!" 1>&2; \
+	  rm -f $$tmpdir/$$lang.new.po; \
+	fi
+
+$(DUMMYPOFILES):
+
+update-gmo: Makefile $(GMOFILES)
+	@:
+
+# Recreate Makefile by invoking config.status. Explicitly invoke the shell,
+# because execution permission bits may not work on the current file system.
+# Use @SHELL@, which is the shell determined by autoconf for the use by its
+# scripts, not $(SHELL) which is hardwired to /bin/sh and may be deficient.
+Makefile: Makefile.in.in Makevars $(top_builddir)/config.status @POMAKEFILEDEPS@
+	cd $(top_builddir) \
+	  && @SHELL@ ./config.status $(subdir)/$@.in po-directories
+
+force:
+
+# Tell versions [3.59,3.63) of GNU make not to export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/grep/po/Makevars b/src/grep/po/Makevars
new file mode 100644
index 0000000..b81d9f1
--- /dev/null
+++ b/src/grep/po/Makevars
@@ -0,0 +1,67 @@
+# Makefile variables for PO directory in any package using GNU gettext.
+
+# Usually the message domain is the same as the package name.
+DOMAIN = $(PACKAGE)
+
+# These two variables depend on the location of this directory.
+subdir = po
+top_builddir = ..
+
+# These options get passed to xgettext.
+XGETTEXT_OPTIONS = --keyword=_ --keyword=N_ \
+          \
+ --flag=_:1:pass-c-format\
+ --flag=N_:1:pass-c-format\
+ --flag=error:3:c-format --flag=error_at_line:5:c-format\
+\
+ --flag=asnprintf:3:c-format\
+ --flag=asprintf:2:c-format\
+ --flag=error:3:c-format\
+ --flag=error_at_line:5:c-format\
+ --flag=vasnprintf:3:c-format\
+ --flag=vasprintf:2:c-format\
+ --flag=wrapf:1:c-format\
+ --from-code=UTF-8\
+ $${end_of_xgettext_options+}
+
+# This is the copyright holder that gets inserted into the header of the
+# $(DOMAIN).pot file.  Set this to the copyright holder of the surrounding
+# package.  (Note that the msgstr strings, extracted from the package's
+# sources, belong to the copyright holder of the package.)  Translators are
+# expected to transfer the copyright for their translations to this person
+# or entity, or to disclaim their copyright.  The empty string stands for
+# the public domain; in this case the translators are expected to disclaim
+# their copyright.
+COPYRIGHT_HOLDER = Free Software Foundation, Inc.
+
+# This is the email address or URL to which the translators shall report
+# bugs in the untranslated strings:
+# - Strings which are not entire sentences, see the maintainer guidelines
+#   in the GNU gettext documentation, section 'Preparing Strings'.
+# - Strings which use unclear terms or require additional context to be
+#   understood.
+# - Strings which make invalid assumptions about notation of date, time or
+#   money.
+# - Pluralisation problems.
+# - Incorrect English spelling.
+# - Incorrect formatting.
+# It can be your email address, or a mailing list address where translators
+# can write to without being subscribed, or the URL of a web page through
+# which the translators can contact you.
+MSGID_BUGS_ADDRESS = bug-grep@gnu.org
+
+# This is the list of locale categories, beyond LC_MESSAGES, for which the
+# message catalogs shall be used.  It is usually empty.
+EXTRA_LOCALE_CATEGORIES = 
+
+# This tells whether the $(DOMAIN).pot file contains messages with an 'msgctxt'
+# context.  Possible values are "yes" and "no".  Set this to yes if the
+# package uses functions taking also a message context, like pgettext(), or
+# if in $(XGETTEXT_OPTIONS) you define keywords with a context argument.
+USE_MSGCTXT = no
+
+# These options get passed to msgmerge.
+# Useful options are in particular:
+#   --previous            to keep previous msgids of translated messages,
+#   --quiet               to reduce the verbosity.
+MSGMERGE_OPTIONS =
diff --git a/src/grep/po/POTFILES.in b/src/grep/po/POTFILES.in
new file mode 100644
index 0000000..4d41ff9
--- /dev/null
+++ b/src/grep/po/POTFILES.in
@@ -0,0 +1,33 @@
+# List of files which containing translatable strings.
+#
+# Copyright 1997-1998, 2005-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+lib/argmatch.c
+lib/argmatch.h
+lib/c-stack.c
+lib/closeout.c
+lib/dfa.c
+lib/error.c
+lib/getopt.c
+lib/obstack.c
+lib/openat-die.c
+lib/xbinary-io.c
+lib/quotearg.c
+lib/regcomp.c
+lib/version-etc.c
+lib/xalloc-die.c
+src/grep.c
+src/pcresearch.c
diff --git a/src/grep/po/Rules-quot b/src/grep/po/Rules-quot
new file mode 100644
index 0000000..d2ac20d
--- /dev/null
+++ b/src/grep/po/Rules-quot
@@ -0,0 +1,47 @@
+# Special Makefile rules for English message catalogs with quotation marks.
+
+DISTFILES.common.extra1 = quot.sed boldquot.sed en@quot.header en@boldquot.header insert-header.sin Rules-quot
+
+.SUFFIXES: .insert-header .po-update-en
+
+en@quot.po-create:
+	$(MAKE) en@quot.po-update
+en@boldquot.po-create:
+	$(MAKE) en@boldquot.po-update
+
+en@quot.po-update: en@quot.po-update-en
+en@boldquot.po-update: en@boldquot.po-update-en
+
+.insert-header.po-update-en:
+	@lang=`echo $@ | sed -e 's/\.po-update-en$$//'`; \
+	if test "$(PACKAGE)" = "gettext-tools"; then PATH=`pwd`/../src:$$PATH; GETTEXTLIBDIR=`cd $(top_srcdir)/src && pwd`; export GETTEXTLIBDIR; fi; \
+	tmpdir=`pwd`; \
+	echo "$$lang:"; \
+	ll=`echo $$lang | sed -e 's/@.*//'`; \
+	LC_ALL=C; export LC_ALL; \
+	cd $(srcdir); \
+	if $(MSGINIT) -i $(DOMAIN).pot --no-translator -l $$lang -o - 2>/dev/null | sed -f $$tmpdir/$$lang.insert-header | $(MSGCONV) -t UTF-8 | $(MSGFILTER) sed -f `echo $$lang | sed -e 's/.*@//'`.sed 2>/dev/null > $$tmpdir/$$lang.new.po; then \
+	  if cmp $$lang.po $$tmpdir/$$lang.new.po >/dev/null 2>&1; then \
+	    rm -f $$tmpdir/$$lang.new.po; \
+	  else \
+	    if mv -f $$tmpdir/$$lang.new.po $$lang.po; then \
+	      :; \
+	    else \
+	      echo "creation of $$lang.po failed: cannot move $$tmpdir/$$lang.new.po to $$lang.po" 1>&2; \
+	      exit 1; \
+	    fi; \
+	  fi; \
+	else \
+	  echo "creation of $$lang.po failed!" 1>&2; \
+	  rm -f $$tmpdir/$$lang.new.po; \
+	fi
+
+en@quot.insert-header: insert-header.sin
+	sed -e '/^#/d' -e 's/HEADER/en@quot.header/g' $(srcdir)/insert-header.sin > en@quot.insert-header
+
+en@boldquot.insert-header: insert-header.sin
+	sed -e '/^#/d' -e 's/HEADER/en@boldquot.header/g' $(srcdir)/insert-header.sin > en@boldquot.insert-header
+
+mostlyclean: mostlyclean-quot
+mostlyclean-quot:
+	rm -f *.insert-header
diff --git a/src/grep/po/af.gmo b/src/grep/po/af.gmo
new file mode 100644
index 0000000..4bcb8cc
--- /dev/null
+++ b/src/grep/po/af.gmo
diff --git a/src/grep/po/af.po b/src/grep/po/af.po
new file mode 100644
index 0000000..5fef5f9
--- /dev/null
+++ b/src/grep/po/af.po
@@ -0,0 +1,847 @@
+# grep
+# Copyright (C) 2004 Free Software Foundation, Inc.
+# Petri Jooste <rkwjpj@puk.ac.za>, 2004.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 2.5g\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2004-03-03 13:33+0200\n"
+"Last-Translator: Petri Jooste <rkwjpj@puk.ac.za>\n"
+"Language-Team: Afrikaans <i18n@af.org.za>\n"
+"Language: af\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=iso-8859-1\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr ""
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr ""
+
+#: lib/dfa.c:896
+#, fuzzy
+msgid "unbalanced ["
+msgstr "Ongebalanseerde ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr ""
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr ""
+
+#: lib/dfa.c:1210
+#, fuzzy
+msgid "unfinished \\ escape"
+msgstr "Onbeëindigde \\-ontsnapstring"
+
+#: lib/dfa.c:1371
+#, fuzzy
+msgid "invalid content of \\{\\}"
+msgstr "ongeldige maks-telling"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr ""
+
+#: lib/dfa.c:1858
+#, fuzzy
+msgid "unbalanced ("
+msgstr "Ongebalanseerde ("
+
+#: lib/dfa.c:1975
+#, fuzzy
+msgid "no syntax specified"
+msgstr "Geen sintaks gespesifiseer"
+
+#: lib/dfa.c:1986
+#, fuzzy
+msgid "unbalanced )"
+msgstr "Ongebalanseerde )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Onbekende stelselfout"
+
+#: lib/getopt.c:278
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: opsie `%s' is dubbelsinnig\n"
+
+#: lib/getopt.c:284
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: opsie `%s' is dubbelsinnig\n"
+
+#  +option or -option
+#: lib/getopt.c:319
+#, fuzzy, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: onbekende opsie `%c%s'\n"
+
+#: lib/getopt.c:345
+#, fuzzy, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: opsie `%c%s' laat nie 'n parameter toe nie\n"
+
+#: lib/getopt.c:360
+#, fuzzy, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: opsie `%s' benodig 'n parameter\n"
+
+#: lib/getopt.c:621
+#, fuzzy, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: ongeldige opsie -- %c\n"
+
+#  1003.2 specifies the format of this message.
+#: lib/getopt.c:636 lib/getopt.c:682
+#, fuzzy, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: opsie benodig 'n parameter -- %c\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "geheue uitgeput"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr ""
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr ""
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+
+#  Get translations for open and closing quotation marks.
+#  The message catalog should translate "`" to a left
+#  quotation mark suitable for the locale, and similarly for
+#  "'".  If the catalog has no translation,
+#  locale_quoting_style quotes `like this', and
+#  clocale_quoting_style quotes "like this".
+#  For example, an American English Unicode locale should
+#  translate "`" to U+201C (LEFT DOUBLE QUOTATION MARK), and
+#  should translate "'" to U+201D (RIGHT DOUBLE QUOTATION
+#  MARK).  A British English Unicode locale should instead
+#  translate these to U+2018 (LEFT SINGLE QUOTATION MARK) and
+#  U+2019 (RIGHT SINGLE QUOTATION MARK), respectively.
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "'"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr ""
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr ""
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Geheue uitgeput"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ""
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr ""
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr ""
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr ""
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr ""
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr ""
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standaardtoevoer)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "ongeldige konteks-lengte-parameter"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "toevoer is te veel om te tel"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "Binêre lêer %s pas\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "rekursiewe lus van gidsinskrywings"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr ""
+
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Gebruik so: %s [OPSIE]... PATROON [LÊER]...\n"
+
+#: src/grep.c:1963
+#, fuzzy, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Probeer `%s --help' vir meer inligting.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr ""
+
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Soek vir PATROON in elke LÊER of in standaardtoevoer.\n"
+"Voorbeeld: %s -i 'hello world' menu.h main.c\n"
+"\n"
+"Reëlmatige uitdrukking-seleksie en -interpretasie:\n"
+
+#: src/grep.c:1975
+#, fuzzy, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     PATROON is 'n uitgebreide reëlmatige "
+"uitdrukking\n"
+"  -F, --fixed-strings       PATROON is 'n reeks stringe geskei met "
+"nuwereëlkarakters\n"
+"  -G, --basic-regexp        PATROON is 'n basic regular expression\n"
+"  -P, --perl-regexp         PATROON is 'n  Perl regular expression\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=PATROON      gebruik PATROON as 'n reëlmatige uitdrukking\n"
+"  -f, --file=FILE           verkry PATROON vanaf LÊER\n"
+"  -i, --ignore-case         ignoreer kasverskille\n"
+"  -w, --word-regexp         dwing PATROON om slegs op hele woorde te pas\n"
+"  -x, --line-regexp         dwing PATROON om slegs op hele reëls te pas\n"
+"  -z, --null-data           elke datareël eindig met 'n 0-greep, nie 'n "
+"nuwereëlkarakter nie\n"
+
+#: src/grep.c:1989
+#, fuzzy, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Verskeie:\n"
+"  -s, --no-messages         onderdruk foutboodskappe\n"
+"  -v, --invert-match        soek nie-passende reëls\n"
+"  -V, --version             wys weergaweinligting en stop\n"
+"      --help                wys hierdie hulpboodskap en stop\n"
+"      --mmap                gebruik geheue-gebonde toevoer indien moontlik\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"\n"
+"Konteksbeheer:\n"
+"  -B, --before-context=AANTAL wys AANTAL reëls voorafgaande konteks\n"
+"  -A, --after-context=AANTAL  wys AANTAL reëls daaropvolgende konteks\n"
+"  -C, --context=AANTAL        wys AANTAL reëls afvoerkonteks\n"
+"  -AANTAL                     dieselfde as --context=AANTAL\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       gebruik merkers om die passende string uit te "
+"wys\n"
+"                            WHEN kan wees: `always', `never' of `auto'.\n"
+"  -U, --binary              moenie CR-karakters by reëleindes wegvat nie "
+"(MSDOS)\n"
+"  -u, --unix-byte-offsets   wys uitwyking asof die CR nie daar is nie "
+"(MSDOS)\n"
+"\n"
+"`egrep' beteken `grep -E'.  `fgrep' beteken `grep -F'.\n"
+"Met geen LÊER, of wanneer LÊER 'n - is, lees standaardtoevoer.  \n"
+"Indien minder as twee LÊERs gegee is, aanvaar -h. Uittreestatus is\n"
+" 0 vir passing, 1 vir geen passing, en 2 vir probleemgevalle.\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "teenstrydige passers is gespesifiseer"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+
+#: src/grep.c:2103
+#, fuzzy, c-format
+msgid "invalid matcher %s"
+msgstr "ongeldige maks-telling"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "onbekende metode vir toestelle"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "ongeldige maks-telling"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "onbekende binêre-lêertipe"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr ""
+
+#: src/pcresearch.c:143
+#, fuzzy
+msgid "the -P option only supports a single pattern"
+msgstr "Die -P opsie word nie ondersteun nie"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr ""
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr ""
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "geheue uitgeput"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr ""
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr ""
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr ""
+
+#, fuzzy, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "waarskuwing: %s: %s\n"
+
+#, fuzzy
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: opsie `--%s' laat nie 'n parameter toe nie\n"
+
+#  --option
+#, fuzzy
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: onbekende opsie `--%s'\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: opsie `-W %s' is dubbelsinnig\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: opsie `-W %s' laat nie 'n parameter toe nie\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: opsie `%s' benodig 'n parameter\n"
+
+#  Cases:
+#  {M} - exact count
+#  {M,} - minimum count, maximum is infinity
+#  {M,N} - M through N
+#~ msgid "unfinished repeat count"
+#~ msgstr "onbeëindigde herhaaltelling"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "wangevormde herhaaltelling"
+
+#~ msgid "out of memory"
+#~ msgstr "te min geheue"
+
+#~ msgid "writing output"
+#~ msgstr "afvoer word geskryf"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Gebruik so: %s [OPSIE]... PATROON [LÊER] ...\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE\n"
+#~ "                            TYPE is 'binary', 'text', or 'without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories\n"
+#~ "                            ACTION is 'read', 'recurse', or 'skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets\n"
+#~ "                            ACTION is 'read' or 'skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=PATTERN     files that match PATTERN will be examined\n"
+#~ "      --exclude=PATTERN     files that match PATTERN will be skipped.\n"
+#~ "      --exclude-from=FILE   files that match PATTERN in FILE will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match only print FILE names containing no match\n"
+#~ "  -l, --files-with-matches  only print FILE names containing matches\n"
+#~ "  -c, --count               only print a count of matching lines per "
+#~ "FILE\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Afvoerbeheer:\n"
+#~ "  -m, --max-count=AANTAL    stop na AANTAL passings\n"
+#~ "  -b, --byte-offset         wys die greep-uitwyking saam met elke "
+#~ "afvoerreël\n"
+#~ "  -n, --line-number         wys die reëlnommer saam met elke afvoerreël\n"
+#~ "      --line-buffered       maak elke keer die lynbuffer leeg\n"
+#~ "  -H, --with-filename       wys die lêernaam vir elke passing\n"
+#~ "  -h, --no-filename         onderdruk die vooraf-lêernaam in die afvoer\n"
+#~ "      --label=ETIKET        wys ETIKET as lêernaam vir standaardtoevoer\n"
+#~ "  -o, --only-matching       wys slegs die deel van 'n reël wat pas op die "
+#~ "PATROON\n"
+#~ "  -q, --quiet, --silent     onderdruk alle normale afvoer\n"
+#~ "      --binary-files=TIPE   aanvaar dat binêre lêers van hierdie TIPE "
+#~ "is.\n"
+#~ "                            TIPE kan wees: 'binary', 'text', of 'without-"
+#~ "match'\n"
+#~ "  -a, --text                dieselfde as --binary-files=text\n"
+#~ "  -I                        dieselfde as --binary-files=without-match\n"
+#~ "  -d, --directories=AKSIE   hoe om gidse te hanteer\n"
+#~ "                            AKSIE kan wees: 'read', 'recurse', of 'skip'\n"
+#~ "  -D, --devices=AKSIE       hoe om toestelle te hanteer, FIFOs en sokke\n"
+#~ "                            AKSIE kan wees: 'read' of 'skip'\n"
+#~ "  -R, -r, --recursive       dieselfde as --directories=recurse\n"
+#~ "      --include=PATROON     lêers waarop PATROON pas sal ondersoek word.\n"
+#~ "      --exclude=PATROON     lêers waarop PATROON pas sal sal oorgeslaan "
+#~ "word.\n"
+#~ "      --exclude-from=FILE   lêers waarop PATROON in LÊER pas sal "
+#~ "oorgeslaan word.\n"
+#~ "  -L, --files-without-match wys slegs lêername wat geen passing bevat "
+#~ "nie\n"
+#~ "  -l, --files-with-matches  wys slegs lêername wat wel passing(s) bevat\n"
+#~ "  -c, --count               wys slegs die aantal reëls in elke LÊER wat "
+#~ "passings bevat\n"
+#~ "  -Z, --null                wys die 0-greep na die LÊERnaam\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Report bugs to <bug-gnu-utils@gnu.org>.\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Rapporteer foute aan <bug-gnu-utils@gnu.org>.\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "onbekende metode vir gidse"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+#~ msgstr ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions. There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Hierdie is vry programmatuur; kyk in die bronkode vir "
+#~ "kopieërvoorwaardes.  Daar is GEEN\n"
+#~ "waarborg nie; selfs nie vir VERKOOPBAARHEID of GESKIKTHEID VIR 'N "
+#~ "SPESIFIEKE DOEL nie.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Die -P en -z opsies kan nie gekombineer word nie"
+
+#  1003.2 specifies the format of this message.
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: ongeldige opsie -- %c\n"
diff --git a/src/grep/po/be.gmo b/src/grep/po/be.gmo
new file mode 100644
index 0000000..b7605ba
--- /dev/null
+++ b/src/grep/po/be.gmo
diff --git a/src/grep/po/be.po b/src/grep/po/be.po
new file mode 100644
index 0000000..eca874b
--- /dev/null
+++ b/src/grep/po/be.po
@@ -0,0 +1,834 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
+# Ales Nyakhaychyk <nab@mail.by>, 2001-2003.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 2.5g\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2003-07-22 17:18+0300\n"
+"Last-Translator: Ales Nyakhaychyk <nab@mail.by>\n"
+"Language-Team: Belarusian <i18n@mova.org>\n"
+"Language: be\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: KBabel 0.9.6\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr ""
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr ""
+
+#: lib/dfa.c:896
+#, fuzzy
+msgid "unbalanced ["
+msgstr "�еўраўнаважана� ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr ""
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr ""
+
+#: lib/dfa.c:1210
+#, fuzzy
+msgid "unfinished \\ escape"
+msgstr "�езавершана� \\ кіруюча� па�ьл�доўна�ьць"
+
+#: lib/dfa.c:1371
+#, fuzzy
+msgid "invalid content of \\{\\}"
+msgstr "недапушчальны найбольшы лічыльнік"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr ""
+
+#: lib/dfa.c:1858
+#, fuzzy
+msgid "unbalanced ("
+msgstr "�еўраважана� ("
+
+#: lib/dfa.c:1975
+#, fuzzy
+msgid "no syntax specified"
+msgstr "Сынтак�і� н�вызначаны"
+
+#: lib/dfa.c:1986
+#, fuzzy
+msgid "unbalanced )"
+msgstr "�еўраўнаважана� )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "�ев�дома� �ы�т�мна� памылка"
+
+#: lib/getopt.c:278
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: выбар \"%s\" неадназначны\n"
+
+#: lib/getopt.c:284
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: выбар \"%s\" неадназначны\n"
+
+#: lib/getopt.c:319
+#, fuzzy, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: нера�пазнаны выбар \"%c%s\n"
+
+#: lib/getopt.c:345
+#, fuzzy, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: выбар \"%c%s\" не дазвал�е довад\n"
+
+#: lib/getopt.c:360
+#, fuzzy, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: выбар \"%s\" патрабуе довад\n"
+
+#: lib/getopt.c:621
+#, fuzzy, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: нер�чаі�ны выбар -- %c\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, fuzzy, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: выбар патрабуе довад -- %c\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "пам�ць вычарпана"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr ""
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr ""
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "\""
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "\""
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr ""
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr ""
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Пам�ць вычарпана"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ""
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr ""
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr ""
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr ""
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr ""
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr ""
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(�тандартны ўвод)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "недапушчальны довад даўжыні кант�к�ту"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "увод занадта в�лікі дл� падліку"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "Супадзеньні двайковага файла %s\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "т�чкі зацыклены"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr ""
+
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Выкары�таньне: %s [ВЫБ�Р]... УЗОР [Ф�ЙЛ]...\n"
+
+#: src/grep.c:1963
+#, fuzzy, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Па�прабуйце \"%s --help\" дл� больш падраб�зных зьве�так.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr ""
+
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"    Шукае ўзор у файле ці ў �тандартным уводзе.\n"
+"�апрыклад: %s -i 'hello world' menu.h main.c\n"
+"\n"
+"Выбар і тлумач�ньне выразаў:\n"
+
+#: src/grep.c:1975
+#, fuzzy, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     УЗОР - г�та пашыраны �талы выраз.\n"
+"  -F, --fixed-strings       УЗОР - г�та набор радкоў, падзеленых між �абой\n"
+"                            пераходамі на новы радок.\n"
+"  -G, --basic-regexp        УЗОР - г�та а�ноўны �талы выраз.\n"
+"  -P, --perl-regexp         УЗОР - г�та �талы выраз на Perl.\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=УЗОР         Выкары�товаць УЗОР �к �талы выраз.\n"
+"  -f, --file=Ф�ЙЛ           �трымліваць узор з файла.\n"
+"  -i, --ignore-case         �е зьв�ртаць увагу на розьніцу між в�лікімі й\n"
+"                            маленькімі літарамі.\n"
+"  -w, --word-regexp         Прымушае каб узор цалкам адпав�даў �лову.\n"
+"  -x, --line-regexp         Прымушае каб узор цалкам адпав�даў радку.\n"
+"  -z, --null-data           Радок даньн�ў павінен мець канчатак ў выгл�дзе\n"
+"                            нул�вога байта, заме�т знака новага радка.\n"
+
+#: src/grep.c:1989
+#, fuzzy, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Разна�тайны�:\n"
+"  -s, --no-messages         Падаўл�ць паведамленьні пра памылкі.\n"
+"  -v, --invert-match        Выбіраць н��упаўшы� радкі.\n"
+"  -V, --version             �адрукаваць зьве�ткі пра в�р�ыю й вый�ьці.\n"
+"      --help                �длю�траваць г�тую даведку й вый�ьці.\n"
+"      --mmap                Выкары�тоўваць memory-mapped, калі г�та "
+"магчыма.\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"\n"
+"Кіраваньне падт�к�там:\n"
+"  -B, --before-context=N    Друкаваць N радкоў пап�р�дн�га падт�к�ту.\n"
+"  -A, --after-context=N     Друкаваць N радкоў на�тупнага падт�к�ту.\n"
+"  -C, --context=N           Друкаваць N радкоў падт�к�ту.\n"
+"  -N                        Раўназначна --context=N\n"
+"      --color[=К�ЛІ],\n"
+"      --colour[=К�ЛІ]       Выкары�тоўваць пазначальнікі, каб адрозьніваць\n"
+"                            �упаўшы� радкі. К�ЛІ можа быць: \"always\"\n"
+"                            (заў�ёды), \"never\" (ніколі)  ці \"auto\".\n"
+"  -U, --binary              �е абразаць знакі CR на прыканцы радка (MSDOS).\n"
+"  -u, --unix-byte-offsets   Паведамл�ць пра адлегла�ьці такім чынам, нібыта\n"
+"                            знакі CR ад�утнічаюць наагул (MSDOS).\n"
+"\n"
+"\"egrep\" азначае \"grep -E\".  \"fgrep\" азначае \"grep -F\".\n"
+"Б�з Ф�ЙЛа, ці калі заме�т назвы Ф�ЙЛа прац�жнік -, чытае �тандартны ўвод.\n"
+"Калі заданы менш чым два файла, працуе �к у выпадку выбара -h.  Стан выхаду\n"
+"роўны 0, калі ё �упадзеньні, 1, калі �упадзеньн�ў н�ма й 2 у выпадку "
+"памылкі.\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "заданы �уп�р�члівы� �упадальнікі"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+
+#: src/grep.c:2103
+#, fuzzy, c-format
+msgid "invalid matcher %s"
+msgstr "недапушчальны найбольшы лічыльнік"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "нев�домы м�тад пралад"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "недапушчальны найбольшы лічыльнік"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "нев�домы від дваічнага файла"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr ""
+
+#: src/pcresearch.c:143
+#, fuzzy
+msgid "the -P option only supports a single pattern"
+msgstr "Выбар -P непадтрымліваецца"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr ""
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr ""
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "пам�ць вычарпана"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr ""
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr ""
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr ""
+
+#, fuzzy, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "Увага! %s: %s\n"
+
+#, fuzzy
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: выбар \"--%s\" не дазвал�е довад\n"
+
+#, fuzzy
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: нера�пазнаны выбар \"--%s\"\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: выбар \"-W %s\" неадназначны\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: выбар \"-W %s\" не дазвал�е довады\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: выбар \"%s\" патрабуе довад\n"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "незавершана� колька�ьць паўтар�ньн�ў"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "др�нна� колька�ьць паўтар�ньн�ў"
+
+#~ msgid "out of memory"
+#~ msgstr "нехапае пам�ці"
+
+#~ msgid "writing output"
+#~ msgstr "запі�ваецца вывад"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Выкары�таньне: %s [ВЫБ�Р]... УЗОР [Ф�ЙЛ] ...\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE\n"
+#~ "                            TYPE is 'binary', 'text', or 'without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories\n"
+#~ "                            ACTION is 'read', 'recurse', or 'skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets\n"
+#~ "                            ACTION is 'read' or 'skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=PATTERN     files that match PATTERN will be examined\n"
+#~ "      --exclude=PATTERN     files that match PATTERN will be skipped.\n"
+#~ "      --exclude-from=FILE   files that match PATTERN in FILE will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match only print FILE names containing no match\n"
+#~ "  -l, --files-with-matches  only print FILE names containing matches\n"
+#~ "  -c, --count               only print a count of matching lines per "
+#~ "FILE\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Кіраваньне вывадам:\n"
+#~ "  -m, --max-count=N         Спыніцца па�ьл� N �упадзеньн�ў.\n"
+#~ "  -b, --byte-offset         Друкаваць адлегла�ьць байта разам з вывадам "
+#~ "радкоў.\n"
+#~ "  -n, --line-number         Друкаваць нумары радкоў побач з радкамі.\n"
+#~ "      --line-buffered       Скідаць вывад на кожным радку.\n"
+#~ "  -H, --with-filename       Друкаваць назву файла на кожнае �упадзеньне.\n"
+#~ "  -h, --no-filename         Падаўл�ць назвы файлаў у вывадзе.\n"
+#~ "      --label=МЕТК�         Друкаваць метку ў �ка�ьці назвы файла дл�\n"
+#~ "                            �тандартнага ўвода.\n"
+#~ "  -o, --only-matching       Паказываць толькі тую ча�тку радка, �ка�\n"
+#~ "                            �упадае з узорам.\n"
+#~ "  -q, --quiet, --silent     Падаўл�ць уве�ь звычайны вывад.\n"
+#~ "      --binary-files=ВІД    Задаць від двайковага файла. �а�ўны� віды:\n"
+#~ "                            \"binary\" (двайковы), \"text\" (т�к�тавы) "
+#~ "ці\n"
+#~ "                            \"without-match\" (неі�тотны).\n"
+#~ "  -a, --text                Раўназначна --binary-files=text.\n"
+#~ "  -I                        Раўназначна --binary-files=without-match.\n"
+#~ "  -d, --directories=ДЗЕЯ�Ь�Е\n"
+#~ "                            Як апрацоўваць т�чкі; ДЗЕЯ�Ь�Е можа быць "
+#~ "\"read\"\n"
+#~ "                            (чытаць), \"recurse\" (р�кур�ыўна абходзіць) "
+#~ "ці\n"
+#~ "                            \"skip\" (абмінаць).\n"
+#~ "  -D, --devices=ДЗЕЯ�Ь�Е    Як апрацоўваць прылады, FIFO й гнёзды;\n"
+#~ "                            ДЗЕЯ�Ь�Е можа быць \"read\" (чытаць) ці\n"
+#~ "                            \"skip\" (абмінаць).\n"
+#~ "  -R, -r, --recursive       Раўназначна --directories=recurse.\n"
+#~ "      --include=УЗОР        �працоўваць файлы, �кі адпав�даюць узору.\n"
+#~ "      --exclude=УЗОР        �е апрацоўваць файлы, �кі адпав�даюць узору.\n"
+#~ "      --exclude-from=Ф�ЙЛ   �бмінаць файлы, �кі� адпав�даюць узору з "
+#~ "файла.\n"
+#~ "  -L, --files-without-match Друкаваць толькі назвы тых файлаў, што н�\n"
+#~ "                            ўтрымліваюць �упадзеньні.\n"
+#~ "  -l, --files-with-matches  Друкаваць толькі назвы тых файлаў, што "
+#~ "ўтрымліваюць\n"
+#~ "                            �упадзеньні.\n"
+#~ "  -c, --count               Друкаваць толькі колька�ьць �упаўшых радкоў "
+#~ "на файл.\n"
+#~ "  -Z, --null                Друкаваць 0-ы байт па�ьл� назвы файла.\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Report bugs to <bug-gnu-utils@gnu.org>.\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Паведамл�йце пра памылкі на <bug-gnu-utils@gnu.org>.\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "нев�домы м�тад т�чак"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+#~ msgstr ""
+#~ "    �ўтар�кі� правы © 1988, 1992-2001 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions. There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "    Г�та вольнае праграмнае забе�ьп�ч�ньне.  Гл�дзіце зыходны т�к�т дл�\n"
+#~ "пагадненьн� аб ра�паў�юджваньні.  �е й�нуе �ІЯК�Е гарантыі, нават аб\n"
+#~ "магчыма�ьці выкары�таньн� зь �кой-небудзь м�тай.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Выбары -P і -z н� могуць і�ьці разам"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: недапушчальны выбар -- %c\n"
diff --git a/src/grep/po/bg.gmo b/src/grep/po/bg.gmo
new file mode 100644
index 0000000..ffc2c53
--- /dev/null
+++ b/src/grep/po/bg.gmo
diff --git a/src/grep/po/bg.po b/src/grep/po/bg.po
new file mode 100644
index 0000000..7020c58
--- /dev/null
+++ b/src/grep/po/bg.po
@@ -0,0 +1,769 @@
+# Bulgarian translation of GNU grep po-file.
+# Copyright (C) 2002, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Pavel Mihaylov <avatarbg@bulgaria.com>, 2002.
+# Alexander Shopov <ash@kambanaria.org>, 2015, 2016, 2017, 2018, 2019, 2020, 2021.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-09 16:17+0300\n"
+"Last-Translator: Alexander Shopov <ash@kambanaria.org>\n"
+"Language-Team: Bulgarian <dict@ludost.net>\n"
+"Language: bg\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "аргументът „%s“ на опци�та „%s“ е неправилен"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "аргументът „%s“ на опци�та „%s“ не е еднозначен"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Възможните аргументи �а:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "програмна грешка"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "препълване на �тека"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "грешка при запи�"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "„[“ без еш"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "неправилен кла� знаци"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "кла� знаци �е указва чрез „[[:ИМЕ:]]“, а не „[:ИМЕ:]“"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "незавършена екранираща по�ледователно�т чрез „\\“"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "неправилно �ъдържание в „\\{\\}“"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "прекалено гол�м регул�рен израз"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "„(“ без еш"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "не е зададен �интак�и�"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "„)“ без еш"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "�еизве�тна �и�темна грешка"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: опци�та „%s%s“ не е еднозначна\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: опци�та „%s%s“ не е еднозначна. Възможно�ти:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: непозната опци� „%s%s“\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: опци�та „%s%s“ �е използва без аргументи\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: опци�та „%s%s“ изи�ква аргумент\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: неправилна опци� — „%c“\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: опци�та изи�ква аргумент — „%c“\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "паметта е изчерпана"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "не може да �е запише ко� е текущата работна директори�"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "не може да �е върне към първоначалната работна директори�"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "неу�пешно задаване на вид на файла като тек�тов/двоичен"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "„"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "“"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "У�пех"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "��ма �ъвпадени�"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "�еправилен регул�рен израз"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "�еправилен знак за подредба"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "�еправилно име на кла� знаци"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Самотна „\\“ накра�"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "�еправилна препратка към �ъвпадение"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "„[“, „[^“, „[:“, „[.“ или „[=“ без еш"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "„(“ или „\\(“ без еш"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "„\\{“ без еш"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "�еправилно �ъдържание в „\\{\\}“"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "�еправилен край на диапазон"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Паметта �върши"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Предхождащи�т регул�рен израз е неправилен"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Ранен край на регул�рен израз"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Регул�рни�т израз е прекалено гол�м"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "„)“ или „\\)“ без еш"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "��ма предхождащ регул�рен израз"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Пакетирано от %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Пакетирано от %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Лиценз — Общ публичен лиценз на GNU (GNU GPL), както е публикуван от "
+"Фондаци�та\n"
+"за �вободен �офтуер — вер�и� 3 на лиценза или (по ваше решение) по-къ�на "
+"вер�и�.\n"
+"<%s>\n"
+"Тази програма е �вободен �офтуер. Можете да � разпро�тран�вате и/или "
+"промен�те.\n"
+"Т� �е разпро�тран�ва БЕЗ �ИК�КВИ Г�Р��ЦИИ доколкото е позволено от закона.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Създадено от %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Създадено от %s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Създадено от %s, %s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Създадено от %s, %s, %s\n"
+"и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Създадено от %s, %s, %s,\n"
+"%s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Създадено от %s, %s, %s,\n"
+"%s, %s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Създадено от %s, %s, %s,\n"
+"%s, %s, %s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Създадено от %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Създадено от %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Създадено от %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s и др.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"Докладвайте грешки в програмата на адре�: %s\n"
+"Докладвайте грешки в превода на адре�: <dict@ludost.net>\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Докладвайте грешки в „%s“ на адре�: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Уеб �траница на „%s“: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Обща помощ за програмите на GNU: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(�тандартен вход)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "неправилен размер на контек�та"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "входните данни �а прекалено големи, за да бъдат преброени"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "„%s“: двоични�т файл напа�ва"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "„%s“: зацикл�не при рекур�ивна обработка на директориите"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "„%s“: входни�т файл е и изходен"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Употреба: %s [ОПЦИЯ]… Ш�БЛО�… [Ф�ЙЛ]…\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "За повече информаци� изпълнете „%s --help“.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Тър�ене на тек�т, напа�ващ � Ш�БЛО�ите във в�еки зададен Ф�ЙЛ.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Пример: %s -i 'hello world' menu.h main.c\n"
+"Може да използвате по един Ш�БЛО� на ред.\n"
+"\n"
+"Избор на шаблона и интерпретаци�:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     Ш�БЛО�ите �а разширени регул�рни изрази\n"
+"  -F, --fixed-regexp        Ш�БЛО�ите �а до�ловни низове\n"
+"  -G, --basic-regexp        Ш�БЛО�ите �а о�новни регул�рни изрази "
+"(�тандартно)\n"
+"  -P, --perl-regexp         Ш�БЛО�ите �а регул�рни изрази на Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=Ш�БЛО�       Ш�БЛО� за регул�рен израз\n"
+"  -f, --file=Ф�ЙЛ           изчитане на Ш�БЛО�ите от Ф�ЙЛ\n"
+"  -i, --ignore-case         без разлика между главни и малки букви\n"
+"      --no-ignore-case      �ъ� разлика между главни и малки букви "
+"(�тандартно)\n"
+"  -w, --word-regexp         �ъвпадане �амо � цели думи\n"
+"  -x, --line-regexp         �ъвпадане �амо � цели редове\n"
+"  -z, --null-data           редовете завършват � NULL, а не �ъ� знак за нов "
+"ред\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Разни:\n"
+"  -s, --no-messages         без �ъобщени� за грешки\n"
+"  -v, --revert-match        извеждане на не�ъвпадащите редове\n"
+"  -V, --version             извеждане на информаци� за вер�и�та и изход\n"
+"      --help                извеждане на помощна информаци� и изход\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Управление на резултата:\n"
+"  -m, --max-count=БРОЙ      �пиране �лед този БРОЙ избрани редове\n"
+"  -b, --byte-offset         извеждане на отме�тването в байтове за в�еки "
+"ред\n"
+"  -n, --line-number         извеждане на номерата на редовете\n"
+"      --line-buffered       буфериране по редове\n"
+"  -H, --with-filename       извеждане на името на файла при в��ко "
+"�ъвпадение\n"
+"  -h, --no-filename         без извеждане на името на файла за в��ко "
+"�ъвпадение\n"
+"      --label=ЕТИКЕТ        използване на ЕТИКЕТ като име за �тандартни� "
+"вход\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       извеждане �амо на �ъвпадението, а не цели� ред\n"
+"  -q, --quiet, --silent     нищо не �е извежда, �амо �е задава изходен код\n"
+"      --binary-files=ВИД    двоичните файлове да �е третират като такъв ВИД\n"
+"                            ВИДът може да „binary“ (двоичен), "
+"„text“ (тек�тов),\n"
+"                            или „without-match“ (без �ъвпадение).\n"
+"  -a, --text                �ъщото като „--binary-files=text“\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        �ъщото като „--binary-files=without-match“\n"
+"  -d, --directories=ДЕЙСТВИЕ\n"
+"                            ДЕЙСТВИЕ при директориите. То може да е:\n"
+"                            „read“ (изчитане), „recurse“ (рекур�ивно "
+"тър�ене)\n"
+"                            или „skip“ (пропу�кане)\n"
+"  -D, --devices=ДЕЙСТВИЕ    ДЕЙСТВИЕ за �пециалните файлове, програмните "
+"канали\n"
+"                            и гнездата. То може да е „read“ (изчитане) или\n"
+"                            „skip“ (пропу�кане)\n"
+"  -R, -r, --recursive       �ъщото като „--directories=recurse“\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=Ш�БЛО�_З�_ИМЕ\n"
+"                            тър�ене �амо във файлове � имена, напа�ващи\n"
+"                            Ш�БЛО�а_З�_ИМЕ\n"
+"      --exclude=Ш�БЛО�_З�_ИМЕ\n"
+"                            пропу�кане на файлове � имена, напа�ващи\n"
+"                            Ш�БЛО�а_З�_ИМЕ\n"
+"      --exclude-from=Ф�ЙЛ   пропу�кане на файлове � имена, напа�ващи на\n"
+"                            шаблоните в този Ф�ЙЛ\n"
+"      --exclude-dir=Ш�БЛО�_З�_ИМЕ\n"
+"                            пропу�кане на директории � имена, напа�ващи\n"
+"                            Ш�БЛО�а_З�_ИМЕ\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match извеждане �амо на имената на файлове без "
+"�ъвпадени�\n"
+"  -l, --files-with-matches  извеждане �амо на имената на файлове �ъ� "
+"�ъвпадени�\n"
+"  -c, --count               извеждане �амо на бро� �ъвпадащи редове във "
+"файл\n"
+"  -T, --initial-tab         подравн�ване на табулациите при необходимо�т\n"
+"  -Z, --null                извеждане на знак NULL �лед в��ко име на файл\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Контрол върху контек�та:\n"
+"  -B, --before-context=БРОЙ извеждане на този БРОЙ предхождащи редове\n"
+"  -A, --after-context=БРОЙ  извеждане на този БРОЙ �ледващи редове\n"
+"  -C, --context=БРОЙ        извеждане на този БРОЙ предхождащи и �ледващи\n"
+"                            редове\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -БРОЙ                     �ъщото като --context=БРОЙ\n"
+"      --group-separator=Р�ЗД\n"
+"                            извеждане на този Р�ЗДелител на отделен ред "
+"между\n"
+"                            �ъвпадени�та � контек�т\n"
+"      --no-group-separator  без извеждане на този Р�ЗДелител между "
+"�ъвпадени�та\n"
+"      --color[=КОГ�]\n"
+"      --colour[=КОГ�]       оцвет�ване на �ъвпадащите низове. КОГ� е "
+"„always“\n"
+"                            (винаги), „never“ (никога) или "
+"„auto“ (автоматично)\n"
+"  -U, --binary              знаците „CR“ в кра� на реда да �е запазват\n"
+"                            (DOS/Windows)\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Когато Ф�ЙЛът е „-“ �е чете �тандартни�т вход.  Без Ф�ЙЛ �е чете текущата\n"
+"директори� „.“.  �ко �а зададени по-малко от два Ф�ЙЛа, �е предполага „-h“.\n"
+"Изходни�т код на grep е 0 при поне един напа�нат ред и 1 във в�ички "
+"о�танали\n"
+"�лучаи.  �ко не е зададена опци�та „-q“ и възникне грешка, изходни�т код е "
+"2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "зададените изрази за �ъвпадение �а в конфликт"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Лип�ва поддръжка на шаблони по Perl — текущата команда е компилирана �\n"
+"опци�та „--disable-perl-regexp“."
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "неправилен израз „%s“"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "неизве�тен метод за обработка на �пециалните файлове"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "ПРЕДУПРЕЖДЕ�ИЕ: опци�та „--unix-byte-offsets“ („-u“) е о�тар�ла"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "неправилен мак�имален брой"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "непознат вид двоичен файл"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Създадено от Mike Haertel и др., вижте\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr ""
+"неу�пешно задел�не на памет за �тека за изпълнение на шаблоните за „PCRE“"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "опци�та „-P“ изи�ква локалът да е � еднобайтово кодиране или UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "опци�та „-P“ поддържа �амо един шаблон"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "вътрешна грешка, ко�то не тр�бва да възниква — молим да � докладвате"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "мак�имални�т размер на реда за „PCRE“ е превишен"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: паметта е изчерпана"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: паметта за �тека за изпълнение на шаблоните за „PCRE“ �върши"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: мак�имални�т брой връщани� при рекур�и� на „PCRE“ е превишен"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: превишен е мак�имумът за рекур�и� на „PCRE“"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: вътрешна грешка на „PCRE“: %d"
diff --git a/src/grep/po/boldquot.sed b/src/grep/po/boldquot.sed
new file mode 100644
index 0000000..4b937aa
--- /dev/null
+++ b/src/grep/po/boldquot.sed
@@ -0,0 +1,10 @@
+s/"\([^"]*\)"/“\1�/g
+s/`\([^`']*\)'/‘\1’/g
+s/ '\([^`']*\)' / ‘\1’ /g
+s/ '\([^`']*\)'$/ ‘\1’/g
+s/^'\([^`']*\)' /‘\1’ /g
+s/“�/""/g
+s/“/“/g
+s/�/�/g
+s/‘/‘/g
+s/’/’/g
diff --git a/src/grep/po/ca.gmo b/src/grep/po/ca.gmo
new file mode 100644
index 0000000..7f98c99
--- /dev/null
+++ b/src/grep/po/ca.gmo
diff --git a/src/grep/po/ca.po b/src/grep/po/ca.po
new file mode 100644
index 0000000..f803a72
--- /dev/null
+++ b/src/grep/po/ca.po
@@ -0,0 +1,879 @@
+# Traducció missatges de GNU grep al català.
+# Copyright (C) 2002 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Enric Alberola Rosell <enricalberola@wanadoo.es>, 2002, 2010.
+# Àngel Mompó <mecatxis@mecatxis.cat>, 2010, 2011, 2012, 2014, 2017, 2019.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU grep-3.1.48\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2019-07-18 22:11+0200\n"
+"Last-Translator: Àngel Mompó <mecatxis@mecatxis.cat>\n"
+"Language-Team: Catalan <ca@dodds.net>\n"
+"Language: ca\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"X-Generator: Gtranslator 2.91.7\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "l'argument %s no és vàlid per %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "l'argument %s és ambigu per %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Els arguments vàlids són:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "error del programa"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "desbordament de la pila"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "error d'escriptura"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ desaparellat"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "La classe de caràcter no és vàlida"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "La sintaxi de la classe de caràcter és [[:espai:]], no [:espai:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "Codi d'escapada \\ inacabat"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "el context de \\{\\} no és vàlid"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "l'expressió regular és massa gran"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( desaparellat"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "no s'ha especificat cap sintaxi"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") desaparellat"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Error desconegut del sistema"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: l'opció «%s%s» és ambigua\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: l'opció «%s%s» és ambigua; possibilitats:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: no es reconeix l'opció «%s%s»\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: l'opció «%s%s» no permet un argument\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: l'opció «%s%s» necessita un argument\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: l'opció no és vàlida -- «%c»\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: l'opció necessita un argument -- «%c»\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "memòria exhaurida"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "no es pot enregistrar el directori de treball actual"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "no s'ha pogut tornar al directori de treball inicial"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "No s'ha pogut establir el mode del descriptor de fitxers text/binari"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "«"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "»"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Èxit"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "No coincideix"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "L'expressió regular no és vàlida"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "La compaginació del caràcter no és vàlida"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "El nom de la classe del caràcter no és vàlida"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Barra inversa final"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "La referència anterior no és vàlida"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Falten o sobren  [, [^, [:, [., o [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "falten o sobren ( o \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Falten o sobren \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "El context de \\{\\} no és vàlid"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "L'abast no és vàlid"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Memòria exhaurida"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "L'expressió regular precedent no és vàlida"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Final prematur de l'expressió regular"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "L'expressió regular és massa gran"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Falten o sobren ) o \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "No hi ha una expressió regular prèvia"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Empaquetat per %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Empaquetat per %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, fuzzy, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"\n"
+"Llicència GPLv3+: GNU GPL versió 3 o posterior <http://gnu.org/licenses/gpl."
+"html>.\n"
+"Aquest programari és lliure: podeu modificar-lo i redistribuir-lo si voleu.\n"
+"No hi ha CAP GARANTIA, en la mesura que ho permeti la llei.\n"
+"\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Escrit per %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Escrit per %s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Escrit per %s, %s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Escrit per %s, %s, %s.\n"
+"i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Escrit per %s, %s, %s.\n"
+"%s, i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Escrit per %s, %s, %s.\n"
+"%s, %s, i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Escrit per %s, %s, %s.\n"
+"%s, %s, %s, i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Escrit per %s, %s, %s.\n"
+"%s, %s, %s, %s,\n"
+"i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Escrit per %s, %s, %s.\n"
+"%s, %s, %s, %s,\n"
+"%s, i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Escrit per %s, %s, %s.\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, i altres.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"Informeu dels errors a: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Informeu dels errors de %s a: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Pàgina inicial de %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, fuzzy, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+"Ajuda general d'utilització del programari de GNU: <https://www.gnu.org/"
+"gethelp/>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(entrada estàndard)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "la longitud de l'argument no és vàlida"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "l'entrada és massa llarga per a comptar"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "Hi ha coincidències en el fitxer binari %s\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "bucle de directori recursiu"
+
+#: src/grep.c:1899
+#, fuzzy, c-format
+msgid "%s: input file is also the output"
+msgstr "el fitxer d'entrada %s és també la sortida"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Forma d'ús: %s [OPCIÓ]... PATRONS [FITXER] ...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Feu servir «%s --help» per a obtenir més informació.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Busca els PATRONS a cada FITXER.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Exemple: %s -i «hola món» menu.h main.c\n"
+"PATRONS pot contenir diversos patrons separats per salts de línia.\n"
+"\n"
+"Selecció i interpretació del patró:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     PATRONS són expressions regulars ampliades\n"
+"  -F, --fixed-strings       PATRONS són conjunts de cadenes separades per "
+"salts de línia\n"
+"  -G, --basic-regexp        PATRONS són expressions regulars bàsiques (per "
+"defecte)\n"
+"  -P, --perl-regexp         PATRONS són expressions regulars de Perl\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=PATRONS      utilitza els PATRONS per la comparació\n"
+"  -f, --file=FITXER         obté els PATRONS del FITXER\n"
+"  -i, --ignore-case         no diferencia entre majúscules i minúscules\n"
+"  -w, --word-regexp         força la concordança amb paraules completes\n"
+"  -x, --line-regexp         força la concordança amb línies completes\n"
+"  -z, --null-data           una línia de dades acaba amb byte 0 i no amb un "
+"salt de línia\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Miscel·lània:\n"
+"  -s, --no-messages         suprimeix els missatges d'error\n"
+"  -v, --invert-match        selecciona les línies que no coincideixen\n"
+"  -V, --version             mostra la informació sobre la versió i surt\n"
+"      --help                mostra aquesta ajuda i surt\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Control de sortida:\n"
+"  -m, --max-count=NUM       s'atura després de NUM coincidències\n"
+"  -b, --byte-offset         mostra el byte de desplaçament amb les línies de "
+"sortida\n"
+"  -n, --line-number         mostra el número de lí­nia amb les línies de "
+"sortida\n"
+"      --line-buffered       bolca la sortida a cada línia\n"
+"  -H, --with-filename       mostra el nom del fitxer amb les línies de "
+"sortida\n"
+"  -h, --no-filename         elimina els noms dels fitxers de la sortida\n"
+"      --label=ETIQUETA      fes servir ETIQUETA com a prefix del nom del "
+"fitxer per l'entrada estàndard\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       mostra només la part de la línia que "
+"coincideixi\n"
+"  -q, --quiet, --silent     elimina la sortida normal\n"
+"      --binary-files=TIPUS  assumeix que els fitxers binaris són de tipus "
+"TIPUS;\n"
+"                            TIPUS pot ser «binary», «text» o «without-"
+"match»\n"
+"  -a, --text                equivalent a --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        equivalent a --binary-files=without-match\n"
+"  -d, --directories=ACCIÓ   com cal tractar els directoris;\n"
+"                            ACCIÓ pot ser: «read», «recurse», o «skip»\n"
+"  -D, --devices=ACCIÓ       com tractar els dispositius, FIFOs i sòcols;\n"
+"                            ACCIÓ pot ser: «read» o «skip»\n"
+"  -r, --recursive           equivalent a --directories=recurse\n"
+"  -R, --dereference-recursive  igual que l'anterior, però segueix tots els "
+"enllaços simbòlics\n"
+
+#: src/grep.c:2023
+#, fuzzy, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB........  busca els fitxers que coincideixin amb GLOB "
+"(un fitxer patró)\n"
+"      --exclude=GLOB ........ salta els fitxers i directoris que "
+"coincideixin amb GLOB\n"
+"      --exclude-from=FITXER   salta els fitxers que coincideixin amb "
+"qualsevol fitxer patró del FITXER\n"
+"      --exclude-dir=GLOB  ...salta els directoris que coincideixin amb "
+"GLOB.\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  mostra només els noms dels FITXERs que no "
+"tinguin cap línia seleccionada\n"
+"  -l, --files-with-matches  mostra només els noms dels FITXERs que "
+"continguin alguna línia seleccionada\n"
+"  -c, --count               mostra només el nombre de línies selecionades "
+"per FITXER\n"
+"  -T, --initial-tab         alinea les tabulacions (si cal)\n"
+"  -Z, --null                mostra byte 0 després del nom de FITXER\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Control del context:\n"
+"  -B, --before-context=NOMBRE mostra un NOMBRE de línies del context "
+"anterior\n"
+"  -A, --after-context=NOMBRE  mostra un NOMBRE de línies del context "
+"posterior\n"
+"  -C, --context=NOMBRE        mostra un NOMBRE de línies del context de "
+"sortida\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                        el mateix que --context=NUM\n"
+"      --color[=QUAN],\n"
+"      --colour[=QUAN]         ressalta amb marcadors les cadenes "
+"coincidents;\n"
+"                              QUAN pot ser: «always», «never» o «auto»\n"
+"  -U, --binary                no elimina els caràcters CR als EOL (MSDOS/"
+"Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Quan el FITXER és «-», llegeix l'entrada estàndard. Si no s'indica el "
+"FITXER, llegeix «.» \n"
+"si és recursiu i «-» si no ho és. Si s'indiquen menys de dos FITXERs, "
+"assumeix -h.\n"
+"L'estat de sortida és 0 si s'havia seleccionat alguna línia (o algun fitxer "
+"si -L), si no 1.\n"
+"Si hi ha algun error i no s'ha indicat -q, l'estat de sortida és 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "s'han especificat expressions conflictives"
+
+#: src/grep.c:2101
+#, fuzzy
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"el suport per l'opció -P no està  compilat a aquest binari --disable-perl-"
+"regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "l'expressió %s no és vàlida"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "el mètode de dispositius és desconegut"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "el comptador de màxims no és vàlid"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "el tipus de fitxer binari és desconegut"
+
+#: src/grep.c:2829
+#, fuzzy
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr "la resta, vegeu <https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "no s'ha pogut assignar memòria per la pila JIT del PCRE"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P només permet la configuració local en unibyte i en UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "l'opció -P només suporta un sol patró"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "error intern (no hauria de passar mai)"
+
+# PCRE is 'Perl Compatible Regular Expression'
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "s'ha superat el límit de longitud de línia del PCRE"
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "memòria exhaurida"
+
+#: src/pcresearch.c:310
+#, fuzzy, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "S'ha acabat la pila del PCRE JIT"
+
+# PCRE is 'Perl Compatible Regular Expression'
+#: src/pcresearch.c:315
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "s'ha superat el límit de l'estratègia «tornada enrere» del PCRE"
+
+# PCRE is 'Perl Compatible Regular Expression'
+#: src/pcresearch.c:319
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "s'ha superat el límit de l'estratègia «tornada enrere» del PCRE"
+
+#: src/pcresearch.c:327
+#, fuzzy, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "error intern del PCRE: %d"
+
+#, c-format
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr "avís: GREP_OPTIONS està desfasat; feu servir un alies o un script"
+
+#, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "aví­s: %s: %s"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "l'argument «%s» de %s%s no és vàlid"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "el sufix «%s» de %s%s no és vàlid"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "l'argument «%s» de %s%s és massa gran"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "Pàgina inicial de %s: <https://www.gnu.org/software/%s/>\n"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "error intern"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: l'opció «--%s» no permet un argument\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: l'opció és desconeguda «--%s»\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: l'opció «-W %s» és ambigua\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: l'opció «-W %s» no permet un argument\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: l'opció «-W %s» necessita un argument\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "l'lseek ha fallat"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "El PATRÓ és, per defecte, una expressió regular bàsica (ERB).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "«egrep» ara és «grep -E». «fgrep» ara és «grep -F».\n"
+#~ "La crida directa tant de «egrep» com de «fgrep» és obsoleta.\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "falta el caràcter d'escapada de ^ o no es permet $ amb -Pz"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Pàgina principal del Grep de GNU: <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "la seqüència d'entrada UTF-8 byte no és vàlida"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "El PATRÓ és una expressió regular ampliada (ERA).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr "La crida com a «egrep» està desfasada; feu servir «grep -E».\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr ""
+#~ "El PATRÓ és un conjunt de cadenes fixes separades per salts de línia.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr "La crida com a «fgrep» està desfasada; feu servir «grep -F».\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s només pot fer servir la sintaxis de patró %s"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "la opció --mmap no fa res des del 2010"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "comptador de repeticions inacabat"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "comptador de repeticions defectuós"
+
+#~ msgid "writing output"
+#~ msgstr "s'escriu a la sortida"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "a GREP_COLORS=\"%s\", la capacitat \"%s\" necessita un valor (\"=..\"). "
+#~ "S'ha omés"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "a GREP_COLORS=\"%s\", la capacitat \"%s\" és booleana i no pot tenir el "
+#~ "valor (\"=%s\"). S'ha omés"
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "a GREP_COLORS=\"%s\", la capacitat \"%s\" %s"
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "s'ha deixat de processar de les subcadenes GREP_COLORS=\"%s\" mal "
+#~ "formades \"%s\""
diff --git a/src/grep/po/cs.gmo b/src/grep/po/cs.gmo
new file mode 100644
index 0000000..d3795dd
--- /dev/null
+++ b/src/grep/po/cs.gmo
diff --git a/src/grep/po/cs.po b/src/grep/po/cs.po
new file mode 100644
index 0000000..29a24eb
--- /dev/null
+++ b/src/grep/po/cs.po
@@ -0,0 +1,989 @@
+# Czech message catalog for grep.
+# Copyright (C) 1998 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Vladimir Michl <Vladimir.Michl@seznam.cz>, 1998.
+# Petr Pisar <petr.pisar@atlas.cz>, 2008, 2009, 2010, 2011, 2012, 2013.
+# Petr Pisar <petr.pisar@atlas.cz>, 2014, 2015, 2016, 2018, 2020, 2021.
+#
+# Thanks to Stanislav Brabec <utx@k332.feld.cvut.cz>.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-09 20:10+02:00\n"
+"Last-Translator: Petr Pisar <petr.pisar@atlas.cz>\n"
+"Language-Team: Czech <translation-team-cs@lists.sourceforge.net>\n"
+"Language: cs\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "neplatný argument %s u %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "nejednozna�ný argument %s u %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Platné argumenty jsou:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "chyba programu"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "přete�ení zásobníku"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "chyba při zápisu"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "nevyvážená ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "neplatný třída znaků"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "zápis třídy znaků je [[:space:]], ne [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "neukon�ená escape sekvence \\"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "neplatný obsah \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "regulární výraz je příliš velký"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "nevyvážená ("
+
+# ? Není zadaná syntaxe
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "syntaxe není ur�ena"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "nevyvážená )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Neznámá systémová chyba"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: přepína� „%s%s“ není jednozna�ný\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: přepína� „%s%s“ není jednozna�ný: možnosti:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: nerozpoznaný přepína� „%s%s“\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: přepína� „%s%s“ musí být zadán bez argumentu\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: přepína� „%s%s“ vyžaduje argument\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: neznámý přepína� – „%c“\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: přepína� vyžaduje argument – „%c“\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "paměť vy�erpána"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "nelze zaznamenat aktuální pracovní adresář"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "návrat do prvotního pracovního adresáře se nezdařil"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "nastavení textového/binárního režimu deskriptoru souboru selhalo"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "„"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "“"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Úspěch"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Žádná shoda"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Neplatný regulární výraz"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Neplatný řadicí znak"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Neplatný název třídy znaků"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Závěre�né koncové lomítko"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Neplatný zpětný odkaz"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Nepárový [, [^, [:, [. nebo [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Nepárový ( nebo \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Nepárový \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Neplatný obsah \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Neplatný konec rozsahu"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Paměť vy�erpána"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Neplatný předchozí regulární výraz"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Před�asný konec regulárního výrazu"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Regulární výraz je příliš velký"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Nepárový ) nebo \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Žádný předchozí regulární výraz"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Zabaleno kým: %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Zabaleno kým: %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Licence GPLv3+: GNU GPL verze 3 nebo novější\n"
+"<%s>.\n"
+"Toto je volné programové vybavení: máte právo jej měnit a dále šířit.\n"
+"Není zde Ž�DN� Z�RUKA, jak jen zákon dovoluje.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Napsal(a) %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Napsali(y) %s a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Napsali(y) %s, %s a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Napsali(y) %s, %s, %s\n"
+"a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Napsali(y) %s, %s, %s,\n"
+"%s a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Napsali(y) %s, %s, %s,\n"
+"%s, %s a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Napsali(y) %s, %s, %s,\n"
+"%s, %s, %s a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Napsali(y) %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Napsali(y) %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Napsali(y) %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s a další.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"Chyby v programu oznamujte (anglicky) na adresu: <%s>\n"
+"Připomínky k překladu na adresu: <translation-team-cs@lists.sourceforge."
+"net>\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Chyby distributora %s oznamujte (anglicky) na adresu: <%s>\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Domovská stránka programu %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Obecná pomoc s používáním GNU softwaru: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standardní vstup)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "neplatný argument délky kontextu"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "po�et vstupních řádků nelze spo�ítat (je jich hodně)"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: binární soubor odpovídá"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: pozor: smy�ka rekurzivních adresářů"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: vstupní soubor je rovněž výstupem"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Použití: %s [PŘEP�NAČ]… VZORKY [SOUBOR]…\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Více informací získáte příkazem „%s --help“.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Každý SOUBOR prohledá na VZORKY.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Příklad: %s -i 'hello world' menu.h main.c\n"
+"VZORKY smí obsahovat více vzorků oddělených novým řádkem.\n"
+"\n"
+"Výběr a interpretace vzorku:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     VZORKY jsou rozšířené regulární výrazy\n"
+"  -F, --fixed-strings       VZORKY jsou řetězce\n"
+"  -G, --basic-regexp        VZORKY jsou základní regulární výrazy\n"
+"  -P, --perl-regexp         VZORKY jsou regulární výrazy jazyka Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=VZORKY       použije VZORKY jako regulární výraz\n"
+"  -f, --file=SOUBOR         na�te VZORKY ze SOUBORU\n"
+"  -i, --ignore-case         ignoruje rozdíly ve velikosti písmen ve "
+"vzorcích\n"
+"                            a datech\n"
+"      --no-ignore-case      neignoruje rozdíly ve velikosti písmen "
+"(výchozí)\n"
+"  -w, --word-regexp         hledá pouze na celá slova\n"
+"  -x, --line-regexp         hledá pouze celé řádky\n"
+"  -z, --null-data           řádek kon�í nulovým bajtem místo znaku nového "
+"řádku\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Různé:\n"
+"  -s, --no-messages         potla�í chybové zprávy\n"
+"  -v, --invert-match        vybere neodpovídající řádky\n"
+"  -V, --version             vypíše ozna�ení verze a skon�í\n"
+"      --help                vypíše tuto nápovědu a skon�í\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Řízení výstupu:\n"
+"  -m, --max-count=POČET     skon�í po vybrání POČTU řádků\n"
+"  -b, --byte-offset         s každým výstupním řádkem vypíše jeho pozici\n"
+"                            v souboru\n"
+"  -n, --line-number         s každým výstupním řádkem vypíše jeho �íslo "
+"řádku\n"
+"      --line-buffered       vyprázdní výstup po každém řádku\n"
+"  -H, --with-filename       u výstupních řádků vypisuje název souboru\n"
+"  -h, --no-filename         potla�í předřazování jména souboru na výstupu\n"
+"      --label=N�ZEV         použije N�ZEV jako ozna�ení standardního\n"
+"                            vstupu na výstupu\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       zobrazí pouze neprázdné �ásti odpovídajících "
+"řádků\n"
+"  -q, --quiet, --silent     potla�í obvyklý výstup\n"
+"      --binary-files=TYP    definuje typ binárních souborů\n"
+"                            TYP může být: „binary“ (binární), "
+"„text“ (textový)\n"
+"                            nebo „without-match“ (bez vyhovění vzorku)\n"
+"  -a, --text                jako --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        jako --binary-files=without-match\n"
+"  -d, --directories=AKCE    jak zpracovávat adresáře. AKCE může být:\n"
+"                            „read“ (�íst), „recurse“ (rekurze),\n"
+"                            „skip“ (přesko�it)\n"
+"  -D, --devices=AKCE        jak zpracovávat zařízení, FIFO (roury) a "
+"sockety,\n"
+"                            AKCE může být: „read“ (�íst) nebo "
+"„skip“ (přesko�it)\n"
+"  -r, --recursive           jako --directories=recurse\n"
+"  -R, --dereference-recursive\n"
+"                            obdobně, jen následuje všechny symbolické "
+"odkazy\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB        prohledá pouze soubory, které vyhovují GLOBU\n"
+"      --exclude=GLOB        přesko�í soubory, které vyhovují GLOBU\n"
+"      --exclude-from=SOUBOR přesko�í soubory, které vyhovují jakémukoliv "
+"vzorku\n"
+"                            ze SOUBORU\n"
+"      --exclude-dir=GLOB    přesko�í adresáře, které vyhovují GLOBU\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match vypíše pouze názvy souborů, ze kterých nebyly\n"
+"                            vybrány žádné řádky\n"
+"  -l, --files-with-matches  vypíše pouze názvy souborů, ze kterých byly "
+"vybrány\n"
+"                            řádky\n"
+"  -c, --count               vypíše pouze po�et vyhovujících řádků na SOUBOR\n"
+"  -T, --initial-tab         zarovná za�átky řádků tabulátory (je-li třeba)\n"
+"  -Z, --null                vypíše nulový bajt za jménem SOUBORU\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Řízení kontextu:\n"
+"  -B, --before-context=POČET vypíše POČET řádků před shodou\n"
+"  -A, --after-context=POČET  vypíše POČET řádků za shodou\n"
+"  -C, --context=POČET        vypíše POČET řádků kontextu (před i za shodou)\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -POČET                     stejné jako --context=POČET\n"
+"      --group-separator=ODDĚLOVAČ\n"
+"                             vypisuje ODDĚLOVAČ na řádku mezi shodami\n"
+"                             s kontextem\n"
+"      --no-group-separator   nevypisuje oddělova� shod s kontextem\n"
+"      --color[=KDY],\n"
+"      --colour[=KDY]         použije barev k rozlišení vyhovujících "
+"řetězců,\n"
+"                             KDY může být „always“ (vždy), „never“ (nikdy)\n"
+"                             nebo „auto“ (automaticky)\n"
+"  -U, --binary               neodstraňuje znak CR na konci řádku (MSDOS/"
+"Windows)\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Je-li SOUBOR -, �te standardní vstup. Ne-li SOUBOR zadán, �te „.“,\n"
+"je-li přítomen přepína� -r, jinak �te standardní vstup. Jestliže jsou\n"
+"zadány méně než dva SOUBORY, pak je výchozí přepína� -h.\n"
+"Návratový kód je 0 při nalezení vyhovujícího řádku, jinak 1.\n"
+"Vyskytne-li se chyba a není-li zadán přepína� -q, bude vrácen kód 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "zadány kolidující vzorky"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"V programu přeloženém s přepína�em --disable-perl-regexp nejsou perlové "
+"výrazy podporovány"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "neplatný syntaxe vzorku %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "neznámá metoda obsluhy zařízení"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "pozor: přepína� --unix-byte-offsets (-u) je zastaralý"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "neplatný maximální po�et"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "neznámý typ binárního souboru"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Napsal Mike Haertel a další, vizte\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "alokace paměti pro JIT zásobník PCRE selhala"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P podporuje pouze jednobajtová a UTF-8 národní prostředí"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "přepína� -P lze být použít pouze s jedním vzorkem"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "vnitřní chyba (to by se nikdy nemělo stát)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "překro�eno omezení PCRE na délku řádku"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: paměť vy�erpána"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: JIT zásobník knihovny PCRE vy�erpán"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: překro�eno omezení PCRE na délku návratu"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: překro�eno omezení PCRE na hloubku zanoření"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: vnitřní chyba PCRE: %d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "pozor: proměnná GREP_OPTIONS je zastaralá, prosím, použijte alias nebo "
+#~ "skript"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "varování: %s: %s"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "Domovská stránka programu %s: <https://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "neplatný argument „%3$s“ u %1$s%2$s"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "neplatná přípona argumentu „%3$s“ u %1$s%2$s"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "argument „%3$s“ u %1$s%2$s je příliš dlouhý"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "vnitřní chyba"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: přepína� „--%s“ musí být zadán bez argumentu\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: neznámý přepína� „--%s“\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: přepína� „-W %s“ není jednozna�ný\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: přepína� „-W %s“ musí být zadán bez argumentu\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: přepína� „-W %s“ vyžaduje argument\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "posun v souboru (lseek) se nezdařil"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr ""
+#~ "VZOREK představuje základní regulární výraz (BRE), pokud není ře�eno "
+#~ "jinak.\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "„egrep“ znamená „grep -E“. „fgrep“ znamená „grep -F“.\n"
+#~ "Přímé spouštění příkazem „egrep“ nebo „fgrep“ je zastaralé.\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "s přepína�i -Pz nejsou podporovány neescapované znaky ^ a $"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Domovská stránka GNU Grepu: <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "neplatná posloupnost UTF-8 bajtů ve vstupu"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "VZOREK představuje rozšířený regulární výraz (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr "Spouštění programu jako „egrep“ je zastaralé; použijte „grep -E“.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "VZOREK představuje množinu řetězců, každý na novém řádku.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr "Spouštění programu jako „fgrep“ je zastaralé; použijte „grep -F“.\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s umí pouze syntaxi vzorků %s"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "přepína� --map nic nedělá již od roku 2010"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "neukon�ený zápis po�tu opakování"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "deformovaný zápis po�tu opakování"
+
+#~ msgid "writing output"
+#~ msgstr "zapisuje se výstup"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "Schopnost „%2$s“ v GREP_COLORS=\"%1$s\" potřebuje hodnotu („=…“); "
+#~ "přesko�ena"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "Schopnost „%2$s“ v GREP_COLORS=\"%1$s\" je pravdivostního typu a nemůže "
+#~ "nést hodnotu („=%3$s“); přesko�ena"
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "V GREP_COLORS=\"%s\" schopnost „%s“ %s"
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "Zpracování chybně utvořeného GREP_COLORS=\"%s\" zastaveno na zbývajícím "
+#~ "podřetězci „%s“"
+
+#~ msgid "unknown directories method"
+#~ msgstr "neznámá metoda obsluhy adresářů"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE;\n"
+#~ "                            TYPE is `binary', `text', or `without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories;\n"
+#~ "                            ACTION is `read', `recurse', or `skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+#~ "                            ACTION is `read' or `skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=FILE_PATTERN  search only files that match FILE_PATTERN\n"
+#~ "      --exclude=FILE_PATTERN  skip files and directories matching "
+#~ "FILE_PATTERN\n"
+#~ "      --exclude-from=FILE   skip files matching any file pattern from "
+#~ "FILE\n"
+#~ "      --exclude-dir=PATTERN directories that match PATTERN will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match print only names of FILEs containing no "
+#~ "match\n"
+#~ "  -l, --files-with-matches  print only names of FILEs containing matches\n"
+#~ "  -c, --count               print only a count of matching lines per "
+#~ "FILE\n"
+#~ "  -T, --initial-tab         make tabs line up (if needed)\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Řízení výstupu:\n"
+#~ "  -m, --max-count=Č�SLO     skon�í, pokud najde Č�SLO výrazů\n"
+#~ "  -b, --byte-offset         s každým výstupním řádkem vypíše jeho pozici\n"
+#~ "                            v souboru\n"
+#~ "  -n, --line-number         s každým výstupním řádkem vypíše jeho �íslo "
+#~ "řádku\n"
+#~ "      --line-buffered       vyprázdní výstup po každém řádku\n"
+#~ "  -H, --with-filename       s každým výstupním řádkem vypíše jméno "
+#~ "souboru\n"
+#~ "  -h, --no-filename         potla�í vypisování jména souboru s výst. "
+#~ "řádkem\n"
+#~ "      --label=N�ZEV         zobrazí N�ZEV jako název souboru na "
+#~ "standardním\n"
+#~ "                            vstupu\n"
+#~ "  -o, --only-matching       zobrazí pouze tu �ást řádku odpovídající "
+#~ "VZORKU\n"
+#~ "  -q, --quiet, --silent     potla�í obvyklý výstup\n"
+#~ "      --binary-files=TYP    definuje typ binárních souborů\n"
+#~ "                            TYP může být: „binary“ (binární), "
+#~ "„text“ (textový)\n"
+#~ "                            nebo „without-match“ (bez vyhovění vzorku)\n"
+#~ "  -a, --text                jako --binary-files=text\n"
+#~ "  -I                        jako --binary-files=without-match\n"
+#~ "  -d, --directories=AKCE    jak zpracovávat adresáře. AKCE může být:\n"
+#~ "                            „read“ (�íst), „recurse“ (rekurze),\n"
+#~ "                            „skip“ (přesko�it)\n"
+#~ "  -D, --devices=AKCE        jak zpracovávat zařízení, FIFO (roury) a "
+#~ "sockety,\n"
+#~ "                            AKCE může být: „read“ (�íst) nebo "
+#~ "„skip“ (přesko�it)\n"
+#~ "  -R, -r, --recursive       jako --directories=recurse\n"
+#~ "      --include=VZOREK      soubory, které vyhovují vzorku, budou "
+#~ "zpracovány\n"
+#~ "      --exclude=VZOREK      soubory, které vyhovují vzorku, budou "
+#~ "přesko�eny\n"
+#~ "      --exclude-from=SOUBOR soubory, které vyhovují vzorkům ze SOUBORu, "
+#~ "budou\n"
+#~ "                            přesko�eny\n"
+#~ "      --exclude-dir=VZOREK  adresáře, které vyhovují vzorku, budou "
+#~ "přesko�eny\n"
+#~ "  -L, --files-without-match vypíše pouze jména souborů, ve kterých nebyl\n"
+#~ "                            VZOREK nalezen\n"
+#~ "  -l, --files-with-matches  vypíše pouze jména souborů, ve kterých byl "
+#~ "VZOREK\n"
+#~ "                            nalezen\n"
+#~ "  -c, --count               vypíše pouze po�et vyhovujících řádků na "
+#~ "SOUBOR\n"
+#~ "  -T, --initial-tab         zarovnání za�átků řádků tabulátory (je-li "
+#~ "třeba)\n"
+#~ "  -Z, --null                vypíše nulový bajt za jménem SOUBORu\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Přepína�e -P a -z nemohou být kombinovány"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: neznámý přepína� -- %c\n"
+
+#~ msgid "Copyright (C) 2008 Free Software Foundation, Inc.\n"
+#~ msgstr "Copyright © 2008 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions.  There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Toto je volné programové vybavení; podmínky pro kopírování a rozšiřování\n"
+#~ "naleznete ve zdrojových textech. Toto programové vybavení je zcela BEZ "
+#~ "Z�RUKY,\n"
+#~ "a to i bez záruky PRODEJNOSTI nebo VHODNOSTI PRO NĚJAK� KONKRÉTN� ÚČEL.\n"
diff --git a/src/grep/po/da.gmo b/src/grep/po/da.gmo
new file mode 100644
index 0000000..4284f0c
--- /dev/null
+++ b/src/grep/po/da.gmo
diff --git a/src/grep/po/da.po b/src/grep/po/da.po
new file mode 100644
index 0000000..826c9cd
--- /dev/null
+++ b/src/grep/po/da.po
@@ -0,0 +1,830 @@
+# Danish messages for GNU Grep
+# Copyright (C) 1996, 1997, 1998, 2009, 2012, 2015, 2017, 2019 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+#
+# Kenneth Christiansen <kenneth@gnome.org>, 1999.
+# Keld Simonsen <keld@dkuug.dk>, 2000
+# Ask Hjorth Larsen <asklarsen@gmail.com>, 2009, 2010, 2012, 2015, 2017, 2019.
+#
+# Konventioner
+# ------------
+#
+# escape -> undvigesekvens
+# standard input -> standard-inddata (etc.)
+# (basic/extended) regular expression -> (elementært/udvidet) regulært udtryk
+# match (n) -> træffer
+# match (v) -> matche (findes i RO)
+#
+# Specielt
+# --------
+#
+# NUM -> ANTAL
+#
+# Strenge i retning af "%s%s argument `%s'" er i stil
+# med "--file argument `hello.txt'" eller "-f argument `hello.txt'".
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep-3.3.42\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2019-12-27 00:28+0100\n"
+"Last-Translator: Ask Hjorth Larsen <asklarsen@gmail.com>\n"
+"Language-Team: Danish <dansk@dansk-gruppen.dk>\n"
+"Language: da\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8-bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "ugyldigt argument %s til %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "flertydigt argument %s til %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Gyldige argumenter er:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "programfejl"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "stakoverløb"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "skrivefejl"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "ubalanceret ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "ugyldig tegnklasse"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "syntaksen for tegnklasser er [[:space:]], ikke [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "ufærdig \\-undvigesekvens"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "ugyldigt indhold af \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "regulært udtryk er for stort"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "ubalanceret ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "ingen syntaks angivet"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "ubalanceret )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Ukendt systemfejl"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: flaget \"%s%s\" er flertydigt\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: flaget \"%s%s\" er flertydigt; muligheder:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: ukendt flag \"%s%s\"\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: flaget \"%s%s\" tillader ikke et argument\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: flaget \"%s%s\" kræver et argument\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: ugyldigt flag -- \"%c\"\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: flaget kræver et argument -- \"%c\"\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "hukommelse opbrugt"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "kan ikke gemme nuværende arbejdskatalog"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "kunne ikke vende tilbage til det oprindelige arbejdskatalog"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "kunne ikke angive tekst-/binærtilstand for fildeskriptor"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "\""
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "\""
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Succes"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Ingen træffere"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Ugyldigt regulært udtryk"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Ugyldigt samletegn (collation character)"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Ugyldigt tegnklassenavn"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Afsluttende omvendt skråstreg"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Ugyldig bagudreference"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Uparret [, [^, [:, [. eller [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Uparret ( eller \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Uparret \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Ugyldigt indhold af \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Ugyldig intervalafslutning"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Hukommelse opbrugt"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Ugyldigt foranstillet regulært udtryk"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Utidig afslutning af regulært udtryk"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Regulært udtryk er for stort"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Uparret ) eller \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Intet foregående regulært udtryk"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Pakket af %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Pakket af %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"GPLv3+-licens: GNU GPL version 3 eller senere <%s>.\n"
+"Dette er fri software: du kan frit ændre og videredistribuere det.\n"
+"Der gives INGEN GARANTI, i den grad som loven tillader det.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Skrevet af %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Skrevet af %s og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Skrevet af %s, %s og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Skrevet af %s, %s, %s\n"
+"og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Skrevet af %s, %s, %s,\n"
+"%s og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Skrevet af %s, %s, %s,\n"
+"%s, %s og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Skrevet af %s, %s, %s,\n"
+"%s, %s, %s og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Skrevet af %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Skrevet af %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Skrevet af %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s og andre.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Rapportér fejl til: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Rapportér fejl i %s til: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Hjemmeside for %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Generel hjælp til brug af GNU-software: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standard-inddata)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "ugyldigt kontekstlængdeargument"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "inddata er for omfattende at optælle"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "Binær fil %s stemmer\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "rekursiv katalogsløjfe"
+
+#: src/grep.c:1899
+#, fuzzy, c-format
+msgid "%s: input file is also the output"
+msgstr "indfilen %s er også udfilen"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Brug: %s [FLAG]... MØNSTRE [FIL]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Prøv \"%s --help\" for mere information.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Søg efter MØNSTRE i hver FIL.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Eksempel: %s -i 'hej verden' menu.h main.c\n"
+"MØNSTRE kan indeholde flere mønstre adskilt af linjeskift.\n"
+"\n"
+"Valg af mønster og fortolkning:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     MØNSTRE er udvidede regulære udtryk\n"
+"  -F, --fixed-strings       MØNSTRE er strenge\n"
+"  -G, --basic-regexp        MØNSTRE er elementære regulære udtryk\n"
+"  -P, --perl-regexp         MØNSTRE er regulære udtryk til Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=MØNSTRE      brug MØNSTRE i søgning\n"
+"  -f, --file=FIL            tag MØNSTRE fra FIL\n"
+"  -i, --ignore-case         skeln ikke mellem store og små bogstaver\n"
+"                              i mønstre og data\n"
+"      --no-ignore-case      skeln mellem store/små bogstaver (standard)\n"
+"  -w, --word-regexp         match kun hele ord\n"
+"  -x, --line-regexp         match kun hele linjer\n"
+"  -z, --null-data           en datalinje slutter med en 0-byte, ikke "
+"linjeskift\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Diverse:\n"
+"  -s, --no-messages         undertryk fejlmeddelser\n"
+"  -v, --invert-match        vælg linjer der ikke passer\n"
+"  -V, --version             vis versionsinformation og afslut\n"
+"      --help                vis denne hjælpetekst og afslut\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Styring af udskrift:\n"
+"  -m, --max-count=ANTAL      stands efter ANTAL fundne linjer\n"
+"  -b, --byte-offset          udskriv startpunkt i byte sammen med fundne "
+"linjer\n"
+"  -n, --line-number          udskriv linjenummer sammen med linjerne\n"
+"      --line-buffered        tøm uddatabuffer for hver linje\n"
+"  -H, --with-filename        udskriv filnavn sammen med udlinjer\n"
+"  -h, --no-filename          undertryk indledende filnavn i udskrift\n"
+"      --label=NAVN           udskriv NAVN som filnavn for standard-inddata\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       vis kun ikketomme dele af matchende linjer\n"
+"  -q, --quiet, --silent     undertryk al normal udskrift\n"
+"      --binary-files=TYPE   antag at binære filer er TYPE;\n"
+"                            TYPE er \"binary\", \"text\" eller \"without-"
+"match\"\n"
+"  -a, --text                svarer til --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        svarer til --binary-files=without-match\n"
+"  -d, --directories=HANDLING  hvordan kataloger skal håndteres;\n"
+"                            HANDLING er \"read\", \"recurse\", eller \"skip"
+"\"\n"
+"  -D, --devices=HANDLING    hvordan enheder, FIFO'er og sokler skal "
+"håndteres;\n"
+"                            HANDLING er \"read\" eller \"skip\"\n"
+"  -r, --recursive           svarer til --directories=recurse\n"
+"  -R, --dereference-recursive  tilsvarende, men følg alle symlænker\n"
+
+# 'spring over' er måske pænere end 'ignorér', men fylder mere, og det er rart at være på <80 kolonner
+#: src/grep.c:2023
+#, fuzzy, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB        søg kun i filer, der matcher GLOB (et "
+"filmønster)\n"
+"      --exclude=GLOB        ignorér filer og kataloger, der matcher GLOB\n"
+"      --exclude-from=FIL    ignorér filer, der matcher ethvert mønster fra "
+"FIL\n"
+"      --exclude-dir=glob    ignorér kataloger, der matcher GLOB\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  udskriv kun navne på FILer uden fundne linjer\n"
+"  -l, --files-with-matches  udskriv kun navne på FILer med fundne linjer\n"
+"  -c, --count               udskriv kun antallet af fundne linjer for hver "
+"FIL\n"
+"  -T, --initial-tab         arrangér tabulatortegn (om nødvendigt)\n"
+"  -Z, --null                udskriv 0-byte efter FILnavn\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Styring af kontekst:\n"
+"  -B, --before-context=ANTAL  udskriv ANTAL linjer af foregående tekst\n"
+"  -A, --after-context=ANTAL  udskriv ANTAL linjer af efterfølgende tekst\n"
+"  -C, --context=ANTAL       udskriv ANTAL linjer af omgivende tekst\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -ANTAL                    det samme som --context=ANTAL\n"
+"      --color[=HVORNÃ…R],\n"
+"      --colour[=HVORNÅR]    brug farvemarkering til at fremhæve træffere;\n"
+"                            HVORNÃ…R er \"always\", \"never\", eller \"auto"
+"\"\n"
+"  -U, --binary              fjern ikke CR-tegn ved EOL (MSDOS/Windows)\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Når FIL er \"-\", læses standard-inddata.  Uden FIL læses \".\" i\n"
+"rekursiv tilstand, ellers \"-\". Givet mindre end to FILer antages -h.\n"
+"Slutstatus er 0 hvis mindst én linje (eller fil med -L) blev valgt, ellers "
+"1;\n"
+"hvis der opstår en fejl, og -q ikke blev givet, er afslutningsstatus 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "modstridende søgeudtryk angivet"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Perl-matching understøttes ikke hvis kompileret med --disable-perl-regexp"
+
+# en 'matcher' er tydeligvis et substantiv her... mystisk
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "ugyldig matcher %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "ukendt enhedsmetode"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "ugyldig angivelse af maksimum"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "ukendt binær filtype"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Skrevet af Mike Haertel med flere; se\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "kunne ikke allokere hukommelse til PCRE JIT-stakken"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P understøtter kun unibyte- og UTF-8-sprogindstillinger"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "flaget -P understøtter kun et enkelt mønster"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "intern fejl (burde aldrig ske)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "overskred maksimal linjelængde for PCRE"
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "hukommelse opbrugt"
+
+#: src/pcresearch.c:310
+#, fuzzy, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "PCRE JIT-stak tømt"
+
+#: src/pcresearch.c:315
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "overskred tilbagerækkevidde for PCRE"
+
+#: src/pcresearch.c:319
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "overskred tilbagerækkevidde for PCRE"
+
+#: src/pcresearch.c:327
+#, fuzzy, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "intern PCRE-fejl: %d"
+
+#, c-format
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "advarsel: GREP_OPTIONS er forældet; brug venligst et alias eller skript"
+
+#, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "advarsel: %s: %s"
+
+#~ msgid "%s home page: <http://www.gnu.org/software/%s/>\n"
+#~ msgstr "Hjemmeside for %s: <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "ugyldigt %s%s-argument \"%s\""
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "ugyldigt suffiks i %s%s-argumentet \"%s\""
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s-argumentet \"%s\" er for stort"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "intern fejl"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: flaget \"--%s\" tillader ikke et argument\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: ukendt flag \"--%s\"\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: flaget \"-W %s\" er flertydigt\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: flaget \"-W %s\" tillader ikke et argument\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: flaget \"-W %s\" kræver et argument\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "lseek mislykkedes"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "\"egrep\" betyder \"grep -E\".  \"fgrep\" betyder \"grep -F\".\n"
+#~ "Direkte kørsel som enten \"egrep\" eller \"fgrep\" er forældet.\n"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "MØNSTER er et udvidet regulært udtryk (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr "Kørsel som \"egrep\" er forældet; brug \"grep -E\" i stedet.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "MØNSTER er en mængde faste strenge adskilt af linjeskift.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr "Kørsel som \"fgrep\" er forældet; brug \"grep -F\" i stedet.\n"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Hjemmeside for GNU Grep: <%s>\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s kan kun bruge %s-mønstersyntaksen"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "tilvalget --mmap har været no-op siden 2010"
diff --git a/src/grep/po/de.gmo b/src/grep/po/de.gmo
new file mode 100644
index 0000000..ec8c10f
--- /dev/null
+++ b/src/grep/po/de.gmo
diff --git a/src/grep/po/de.po b/src/grep/po/de.po
new file mode 100644
index 0000000..0dc8ea8
--- /dev/null
+++ b/src/grep/po/de.po
@@ -0,0 +1,758 @@
+# Deutsche Übersetzungen für Meldungen von GNU grep.
+# Copyright © 1997-99, 2000, 2001, 2002 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Martin von Löwis <martin@mira.isdn.cs.tu-berlin.de>, 1997-99, 2000-2002.
+# Philipp Thomas <pth@suse.de>, 2012-2013, 2015-2016.
+# Mario Blättermann <mario.blaettermann@gmail.com>, 2014, 2019-2021.
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU grep 3.5.16\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-01-27 18:27+0100\n"
+"Last-Translator: Mario Blättermann <mario.blaettermann@gmail.com>\n"
+"Language-Team: German <translation-team-de@lists.sourceforge.net>\n"
+"Language: de\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: Lokalize 20.12.1\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "ungültiges Argument %s für %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "mehrdeutiges Argument %s für %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Gültige Argumente sind:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "Programmfehler"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "Stack-Ãœberlauf"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "Schreibfehler"
+
+# Is this message used only for [ without matching ],
+# or for ] without [ as well?
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ ohne schließendes Gegenstück"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "Ungültige Zeichenklasse"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "die Syntax für Zeichenklassen ist [[:space:]], nicht [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "unbeendete \\-Escape-Sequenz"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "Ungültiger Inhalt von \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "Der reguläre Ausdruck ist zu groß"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( ohne schließendes Gegenstück"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "es wurde keine Syntax angegeben"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "Schließende ) ohne öffnendes Gegenstück"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Unbekannter Systemfehler"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: Option „%s%s“ ist mehrdeutig\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: die Option „%s%s“ ist mehrdeutig; Mögliche Bedeutungen:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: unbekannte Option „%s%s“\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: Option „%s%s“ erlaubt kein Argument\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: Option „%s%s“ benötigt ein Argument\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: ungültige Option -- „%c“\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: Option erfordert ein Argument -- „%c“\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "Speicher ausgeschöpft"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "das aktuelle Verzeichnis kann nicht aufgezeichnet werden"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "die Rückkehr in das ursprüngliche Arbeitsverzeichnis war nicht möglich"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "Text-/Binärmodus des Dateideskriptors konnte nicht gesetzt werden"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "„"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "“"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Erfolg"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Keine Ãœbereinstimmung"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Ungültiger regulärer Ausdruck"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Ungültiges Suchzeichen"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Ungültiger Zeichenklassenname"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Rückschrägstrich am Ende"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Ungültige Rückwärtsreferenz"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Kein Gegenstück für [, [^, [:, [., oder [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Kein Gegenstück für ( oder \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Kein Gegenstück für \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Ungültiger Inhalt von \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Ungültiges Bereichsende"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Speicher ausgeschöpft"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Ungültiger vorhergehender regulärer Ausdruck"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Vorzeitiges Ende des regulären Ausdrucks"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Der reguläre Ausdruck ist zu groß"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Kein Gegenstück für ) oder \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Kein vorhergehender regulärer Ausdruck"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Gepackt von %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Gepackt von %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Lizenz GPLv3+: GNU GPL Version 3 oder neuer <%s>.\n"
+"Dies ist freie Software: Sie können sie ändern und weitergeben.\n"
+"Es gibt keinerlei Garantien, soweit gesetzlich zulässig.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Geschrieben von %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Geschrieben von %s und %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Geschrieben von %s, %s und %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Geschrieben von %s, %s, %s\n"
+"und %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Geschrieben von %s, %s, %s,\n"
+"%s und %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Geschrieben von %s, %s, %s,\n"
+"%s, %s und %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Geschrieben von %s, %s, %s,\n"
+"%s, %s, %s und %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Geschrieben von %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"und %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Geschrieben von %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s und %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Geschrieben von %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s und anderen.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"Melden Sie Ãœbersetzungsfehler an <translation-team-de@lists.sourceforge."
+"net>,\n"
+"Programmfehler dagegen (auf Englisch, mit LC_ALL=C) an %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Melden Sie Programmfehler für %s (auf Englisch, mit LC_ALL=C) an %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "%s Homepage: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Allgemeine Hilfe zur Benutzung von GNU-Software: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(Standardeingabe)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "ungültiges Argument für die Kontextlänge"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "die Eingabe ist zu groß, um gezählt zu werden"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: Übereinstimmungen in Binärdatei"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: Warnung: rekursive Verzeichnisschleife"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: die Eingabedatei ist auch die Ausgabedatei"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Aufruf: %s [OPTION]… MUSTER [DATEI]…\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "„%s --help“ liefert weitere Informationen.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Nach MUSTER in jeder DATEI oder der Standardeingabe suchen.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Beispiel: %s -i 'Hallo Welt' menu.h main.c\n"
+"MUSTER kann mehrere durch Zeilenumbruch getrennte Muster enthalten.\n"
+"\n"
+"Auswahl und Interpretation von Mustern:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     MUSTER sind erweiterte reguläre Ausdrücke\n"
+"  -F, --fixed-strings       MUSTER sind Zeichenketten\n"
+"  -G, --basic-regexp        MUSTER sind reguläre Standardausdrücke\n"
+"  -P, --perl-regexp         MUSTER sind reguläre Ausdrücke, wie Perl\n"
+"                            sie akzeptiert\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=MUSTER       MUSTER zur Treffersuche verwenden\n"
+"  -f, --file=DATEI          MUSTER aus DATEI lesen\n"
+"  -i, --ignore-case         Unterschied zwischen Groß- und Kleinschreibung\n"
+"                             ignorieren\n"
+"      --no-ignore-case      Festlegung zur Groß- oder Kleinschreibung\n"
+"                              nicht ignorieren\n"
+"  -w, --word-regexp         MUSTER passt nur auf ganze Wörter\n"
+"  -x, --line-regexp         MUSTER passt nur auf ganze Zeilen\n"
+"  -z, --null-data           Eine Zeile endet mit Nullbyte, nicht Newline\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Verschiedenes:\n"
+"  -s, --no-messages         Fehlermeldungen unterdrücken\n"
+"  -v, --invert-match        Nicht-passende Zeilen anzeigen\n"
+"  -V, --version             Versionsnummer ausgeben und beenden\n"
+"      --help                Diese Hilfe ausgeben und beenden\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Steuerung der Ausgabe:\n"
+"  -m, --max-count=ANZAHL    stoppt nach ANZAHL ausgewählter Zeilen\n"
+"  -b, --byte-offset         gibt mit den Zeilen auch den Abstand in Bytes "
+"an\n"
+"  -n, --line-number         gibt mit den Zeilen auch die Zeilennummer an\n"
+"      --line-buffered       leert den Puffer nach jeder Zeile\n"
+"  -H, --with-filename       gibt den Dateinamen für jede Übereinstimmung "
+"aus\n"
+"  -h, --no-filename         unterdrückt die Ausgabe des vorangehenden\n"
+"                             Dateinamens\n"
+"      --label=BEZEICHNUNG   verwendet BEZEICHNUNG als Präfix für Dateinamen\n"
+"                            der Standardeingabe\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       zeigt nur den nicht-leeren Teil einer Zeile,\n"
+"                            der zu MUSTER passt\n"
+"  -q, --quiet, --silent     unterdrückt alle normalen Ausgaben\n"
+"      --binary-files=TYP    alle binären Dateien sind vom Typ TYP;\n"
+"                            TYP kann „binary“, „text“ oder „without-match“\n"
+"                             sein\n"
+"  -a, --text                gleichbedeutend mit --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        gleichbedeutend mit --binary-files=without-"
+"match\n"
+"  -d, --directories=AKTION  beschreibt, wie Verzeichnisse zu behandeln "
+"sind;\n"
+"                              AKTION kann „read“, „recurse“ oder „skip“ "
+"sein\n"
+"  -D, --devices=AKTION      Behandlung von Geräten, FIFOs oder Sockets;\n"
+"                              AKTION kann „read“ oder „skip“ sein\n"
+"  -r, --recursive           wie --directories=recurse\n"
+"  -R, --dereference-recursive\n"
+"                            ebenso, folgt aber allen symbolischen Links\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=DATEIMUSTER  durchsucht nur Dateien, die DATEIMUSTER\n"
+"                              entsprechen\n"
+"      --exclude=DATEIMUSTER  überspringt Dateien, die\n"
+"                              DATEIMUSTER entsprechen\n"
+"      --exclude-from=DATEI   überspringt Dateien, die einem Dateimuster\n"
+"                              in DATEI entsprechen.\n"
+"      --exclude-dir=MUSTER   überspringt Verzeichnisse, die MUSTER\n"
+"                              entsprechen\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  nur die Namen von Dateien ausgeben, die keinen\n"
+"                              passenden Inhalt haben\n"
+"  -l, --files-with-matches   nur die Namen von Dateien mit passendem Inhalt\n"
+"                              ausgeben\n"
+"  -c, --count                nur die Anzahl der passenden Zeilen pro DATEI\n"
+"                              ausgeben\n"
+"  -T, --initial-tab          Tabulatoren (wenn nötig) ausrichten\n"
+"  -Z, --null                 ein 0-Byte nach einem Dateinamen ausgeben\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Kontextsteuerung:\n"
+"  -B, --before-context=ANZAHL  ANZAHL Zeilen vorausgehenden Kontextes\n"
+"                                ausgeben\n"
+"  -A, --after-context=ANZAHL   ANZAHL Zeilen nachfolgenden Kontextes\n"
+"                                ausgeben\n"
+"  -C, --context=ANZAHL         ANZAHL Zeilen Kontext ausgeben\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -ANZAHL                   Wie --context=ANZAHL\n"
+"      --color[=WANN], \n"
+"      --colour=[WANN]       Passende Textfragmente markieren\n"
+"                            WANN kann „always“, „never“ oder „auto“ sein\n"
+"  -U, --binary              CR-Zeichen am Zeilenende belassen\n"
+"                             (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Wenn DATEI „-“ ist, wird die Standardeingabe gelesen. Ohne DATEI wird „.“\n"
+"gelesen, wenn -r auf der Befehlszeile angegeben wurde, ansonsten „-“.\n"
+"Wenn weniger als zwei DATEIen angegeben wurden, wird -h angenommen.\n"
+"Der Rückgabewert ist 0, wenn eine Zeile passte, ansonsten 1. Wenn ein\n"
+"Fehler auftrat und -q nicht angegeben wurde, ist der Rückgabewert 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "die angegebenen Suchmuster stehen in Konflikt zueinander"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Perl-basierte Treffersuche wurde in dieses --disable-perl-regexp-Binary "
+"nicht einkompiliert"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "ungültige Entsprechung %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "Unbekannte Methode für Gerätedateien"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "ungültige Maximalanzahl"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "unbekannter Typ für Binärdateien"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Geschrieben von Mike Haertel und anderen; siehe\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "es konnte kein Speicher für den PCRE-JIT-Stack reserviert werden"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P unterstützt nur Unibyte- oder UTF-8-Locales"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "Die Option -P unterstützt nur ein einzelnes Suchmuster"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "Interner Fehler (sollte nie vorkommen)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "Überschreitung der zulässigen Zeilenlänge von PCREs"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: Speicher ausgeschöpft"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: Kellerspeicher für PCRE JIT ist erschöpft"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: Überschreitung der Zurückverfolgungsbeschränkung des PCREs"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: Überschreitung der Rekursionsbeschränkung des PCREs"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: interner PCRE-Fehler: %d"
diff --git a/src/grep/po/el.gmo b/src/grep/po/el.gmo
new file mode 100644
index 0000000..2e98c80
--- /dev/null
+++ b/src/grep/po/el.gmo
diff --git a/src/grep/po/el.po b/src/grep/po/el.po
new file mode 100644
index 0000000..17a990f
--- /dev/null
+++ b/src/grep/po/el.po
@@ -0,0 +1,866 @@
+# Greek messages for GNU grep
+# This file is distributed under the same license as the grep package.
+# Copyright (C) 1998, 2002 Free Software Foundation, Inc.
+# Simos Xenitellis <simos@hellug.gr>, 1998, 2002.
+# Savvas Radevic <vicedar@gmail.com>, 2012.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 2.11.11-pre1\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2012-05-05 23:23+0100\n"
+"Last-Translator: Savvas Radevic <vicedar@gmail.com>\n"
+"Language-Team: Greek <team@lists.gnome.gr>\n"
+"Language: el\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Poedit-Language: Greek\n"
+"X-Poedit-Country: GREECE\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "άκυ�η επιλογή %s για %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "διφο�ο�μενη επιλογή %s για %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Έγκυ�ες επιλογές είναι οι εξής:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "σφάλμα εγγ�αφής"
+
+# src/dfa.c:652 src/dfa.c:655 src/dfa.c:682 src/dfa.c:686 src/dfa.c:687
+# src/dfa.c:690 src/dfa.c:703 src/dfa.c:704
+# src/dfa.c:660 src/dfa.c:663 src/dfa.c:690 src/dfa.c:694 src/dfa.c:695
+# src/dfa.c:698 src/dfa.c:711 src/dfa.c:712
+#: lib/dfa.c:896
+#, fuzzy
+msgid "unbalanced ["
+msgstr "Μη ισο��οπημένο ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "άκυ�η κατηγο�ία χα�ακτή�ων"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "η σ�νταξη κατηγο�ίας χα�ακτή�ων είναι [[:space:]], όχι [:space:]"
+
+# src/dfa.c:444
+# src/dfa.c:452
+#: lib/dfa.c:1210
+#, fuzzy
+msgid "unfinished \\ escape"
+msgstr "Μη τε�ματισμένος χα�ακτή�ας διαφυγής \\"
+
+# src/dfa.c:556 src/dfa.c:562 src/dfa.c:573 src/dfa.c:584
+# src/dfa.c:564 src/dfa.c:570 src/dfa.c:581 src/dfa.c:592
+#: lib/dfa.c:1371
+#, fuzzy
+msgid "invalid content of \\{\\}"
+msgstr "μη έγκυ�ος μέγιστος μετ�ητής"
+
+#: lib/dfa.c:1374
+#, fuzzy
+msgid "regular expression too big"
+msgstr "Υπε�βολικά μεγάλη η κανονική έκφ�αση"
+
+# src/dfa.c:841
+# src/dfa.c:849
+#: lib/dfa.c:1858
+#, fuzzy
+msgid "unbalanced ("
+msgstr "Μη ισο��οπημένο ("
+
+# src/dfa.c:962
+# src/dfa.c:970
+#: lib/dfa.c:1975
+#, fuzzy
+msgid "no syntax specified"
+msgstr "Δεν ο�ίστηκε συντακτικό"
+
+# src/dfa.c:970
+# src/dfa.c:978
+#: lib/dfa.c:1986
+#, fuzzy
+msgid "unbalanced )"
+msgstr "Μη ισο��οπημένο )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Άγνωστο λάθος συστήματος"
+
+# src/getopt.c:813
+# src/getopt.c:813
+#: lib/getopt.c:278
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: η επιλογή «-W %s» είναι διφο�ο�μενη\n"
+
+# src/getopt.c:628
+# src/getopt.c:628
+#: lib/getopt.c:284
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: η επιλογή «%s» είναι διφο�ο�μενη\n"
+
+# src/getopt.c:707
+# src/getopt.c:707
+#: lib/getopt.c:319
+#, fuzzy, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: μη αναγνω�ίσιμη επιλογή «%c%s»\n"
+
+# src/getopt.c:657
+# src/getopt.c:657
+#: lib/getopt.c:345
+#, fuzzy, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: η επιλογή «%c%s» δεν επιτ�έπει ο�ίσματα\n"
+
+# src/getopt.c:674 src/getopt.c:847
+# src/getopt.c:674 src/getopt.c:847
+#: lib/getopt.c:360
+#, fuzzy, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: η επιλογή «%s» απαιτεί ό�ισμα\n"
+
+# src/getopt.c:736
+# src/getopt.c:736
+#: lib/getopt.c:621
+#, fuzzy, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: μη έγκυ�η επιλογή -- %c\n"
+
+# src/getopt.c:766 src/getopt.c:896
+# src/getopt.c:766 src/getopt.c:896
+#: lib/getopt.c:636 lib/getopt.c:682
+#, fuzzy, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: η επιλογή απαιτεί ένα ό�ισμα -- %c\n"
+
+# src/grep.c:144 src/grep.c:161 src/grep.c:222 src/grep.c:263 src/kwset.c:184
+# src/kwset.c:190
+# src/grep.c:164 src/grep.c:181 src/grep.c:283 src/grep.c:338 src/kwset.c:184
+# src/kwset.c:190
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "η μνήμη εξαντλήθηκε"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "δεν είναι δυνατή η καταγ�αφή του τ�έχοντος φακέλου ε�γασίας"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "αποτυχία επιστ�οφής στον α�χικό φάκελο ε�γασίας"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "«"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "»"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Επιτυχία"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Καμία αντιστοιχία"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Άκυ�η κανονική έκφ�αση"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr ""
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr ""
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Άκυ�ο τέλος σει�άς"
+
+# src/dfa.c:147 src/dfa.c:159 src/dfa.c:172
+# src/dfa.c:155 src/dfa.c:167 src/dfa.c:180 src/grep.c:827
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Η μνήμη εξαντλήθηκε"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Άκυ�η π�οηγο�μενης κανονικής έκφ�ασης"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Π�όω�ο τέλος της κανονικής έκφ�ασης"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Υπε�βολικά μεγάλη η κανονική έκφ�αση"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ""
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Καμία π�οηγο�μενη κανονική έκφ�αση"
+
+#: lib/version-etc.c:73
+#, fuzzy, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Συσκευάστηκε από %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, fuzzy, c-format
+msgid "Packaged by %s\n"
+msgstr "Συσκευάστηκε από %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, fuzzy, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"\n"
+"Άδεια χ�ήσης GPLv3+: GNU GPL έκδοση 3 ή μεταγενέστε�η <http://gnu.org/"
+"licenses/gpl.html>\n"
+"Αυτό είναι ελε�θε�ο λογισμικό: Είστε ελε�θε�οι να το αλλάξετε και να το "
+"αναδιανέμετε.\n"
+"Δεν υπά�χει ΚΑΜΙΑ ΕΓΓΥΗΣΗ στην έκταση που επιτ�έπεται από το νόμο.\n"
+"\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, fuzzy, c-format
+msgid "Written by %s.\n"
+msgstr "Συντάχθηκε από τον %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, fuzzy, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Συντάχθηκε από τους %s και %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, fuzzy, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Συντάχθηκε από τους %s, %s, και %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, fuzzy, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Συντάχθηκε από τους %s, %s, %s,\n"
+"και %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, fuzzy, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Συντάχθηκε από τους %s, %s, %s,\n"
+"%s, και %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, fuzzy, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Συντάχθηκε από τον %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, fuzzy, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Συντάχθηκε από τους %s, %s, %s,\n"
+"%s, %s, %s, και %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, fuzzy, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Συντάχθηκε από τους %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"και %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, fuzzy, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Συντάχθηκε από τους %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, και %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, fuzzy, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Συντάχθηκε από τους %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, και άλλους.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"Αναφο�ά σφαλμάτων: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Αναφο�ά %s σφαλμάτων: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "%s κεντ�ική σελίδα: <%s>\n"
+
+#: lib/version-etc.c:260
+#, fuzzy, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Γενική βοήθεια χ�ήσης λογισμικο� GNU: <http://www.gnu.org/gethelp/>\n"
+
+# src/grep.c:964 src/grep.c:1015
+# src/grep.c:730
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(κανονική είσοδος)"
+
+# src/grep.c:785 src/grep.c:792
+# src/grep.c:1060 src/grep.c:1067 src/grep.c:1076
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "μη έγκυ�ο ό�ισμα μήκους πε�ιεχομένου"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "η είσοδος είναι πολ� μεγάλη για να μετ�ηθεί"
+
+# src/grep.c:715
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "Το δυαδικό α�χείο %s ται�ιάζει\n"
+
+# src/grep.c:844
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "αναδ�ομική αλληλοδιαδοχή καταλόγων"
+
+#: src/grep.c:1899
+#, fuzzy, c-format
+msgid "%s: input file is also the output"
+msgstr "το α�χείο εισαγωγής %s είναι επίσης το α�χείο εξόδου"
+
+# src/grep.c:597
+# src/grep.c:862
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Χ�ήση: %s [ΕΠΙΛΟΓΗ]... ΥΠΟΔΕΙΓΜΑ [ΑΡΧΕΙΟ]...\n"
+
+# src/grep.c:598
+# src/grep.c:863
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Δοκιμάστε «%s --help» για πε�ισσότε�ες πλη�οφο�ίες.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr ""
+
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Ε��εση του ΥΠΟΔΕΙΓΜΑτος σε κάθε ΑΡΧΕΙΟ ή την κανονική είσοδο.\n"
+"Πα�άδειγμα: %s -i 'hello world' menu.h main.c\n"
+"\n"
+"Επιλογή κανονικής έκφ�ασης και ε�μηνεία:\n"
+
+#: src/grep.c:1975
+#, fuzzy, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     ΥΠΟΔΕΙΓΜΑ είναι μια εκτεταμένη κανονική έκφ�αση\n"
+"  -F, --fixed-regexp        ΥΠΟΔΕΙΓΜΑ είναι στατικό αλφα�ιθμητικό διαχω�ι-\n"
+"                              ζόμενο με χα�ακτή�ες αλλαγής γ�αμμής\n"
+"  -G, --basic-regexp        ΥΠΟΔΕΙΓΜΑ είναι απλή κανονική έκφ�αση\n"
+"  -P, --perl-regexp         ΥΠΟΔΕΙΓΜΑ είναι κανονική έκφ�αση Perl\n"
+
+# src/grep.c:603
+# src/grep.c:868
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=ΥΠΟΔΕΙΓΜΑ    χ�ήση ΥΠΟΔΕΙΓΜΑτος για κανονική έκφ�αση\n"
+"  -f, --file=ΑΡΧΕΙΟ         λήψη ΥΠΟΔΕΙΓΜΑτος από το α�χείο ΑΡΧΕΙΟ\n"
+"  -i, --ignore-case         αγνόησε διαφο�ές πεζών/κεφαλαίων\n"
+"  -w, --word-regexp         επιβολή του ΥΠΟΔΕΙΓΜΑτος να ται�ιάζει μόνο\n"
+"                              ολόκλη�ες λέξεις\n"
+"  -x, --line-regexp         επιβολή του ΥΠΟΔΕΙΓΜΑτος να ται�ιάζει μόνο\n"
+"                              ολόκλη�ες γ�αμμές\n"
+"  -z, --null-data           η γ�αμμή δεδομένων τε�ματίζεται με byte 0\n"
+"                              και όχι με χα�ακτή�α αλλαγής γ�αμμής\n"
+
+# src/grep.c:615
+# src/grep.c:880
+#: src/grep.c:1989
+#, fuzzy, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Λοιπά:\n"
+"  -s, --no-messages         αποφυγή εμφάνισης μηνυμάτων σφαλμάτων\n"
+"  -v, --revert-match        επιλογή γ�αμμών που δεν ται�ιάζουν\n"
+"  -V, --version             εμφάνισης πλη�οφο�ιών έκδοσης και έξοδος\n"
+"      --help                εμφάνισης αυτής της βοήθειας και έξοδος\n"
+"      --mmap                χ�ήση εισόδου απεικονισμένη-στη-μνήμη αν\n"
+"                              υπά�χει τέτοια δυνατότητα\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+
+#: src/grep.c:2036
+#, fuzzy, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Έλεγχος βάσει του πε�ιεχομένου:\n"
+"  -B, --before-context=ΑΡΙΘΜΟΣ εμφάνιση ΑΡΙΘΜΟΣ γ�αμμών με ακολουθο�μενο\n"
+"                              πε�ιεχόμενο\n"
+"  -A, --after-context=ΑΡΙΘΜΟΣ  εμφάνιση ΑΡΙΘΜΟΣ γ�αμμών με π�οπο�ευόμενο\n"
+"                              πε�ιεχόμενο\n"
+"  -C, --context=ΑΡΙΘΜΟΣ     εμφάνιση ΑΡΙΘΜΟΣ (εξ ο�ισμο� 2) γ�αμμών με\n"
+"                              πε�ιεχόμενο εξόδου\n"
+
+# src/grep.c:633
+# src/grep.c:902
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      το ίδιο με --context=ΑΡΙΘΜΟΣ\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to distinguish the matching string\n"
+"                            WHEN may be `always', `never' or `auto'.\n"
+"  -U, --binary              να μην απαλείφονται χα�ακτή�ες CR στο EOL "
+"(MSDOS)\n"
+"  -u, --unix-byte-offsets   αναφο�ά σχετικών θέσεων σα να μην υπή�χαν\n"
+"                              χα�ακτή�ες CR (MSDOS)\n"
+"\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Χω�ία ΑΡΧΕΙΟ, ή όταν το ΑΡΧΕΙΟ είναι -, διαβάζεται η κανονική είσοδος.\n"
+"Αν στα ο�ίσματα υπά�χουν λιγότε�α από δ�ο ΑΡΧΕΙΑ, τότε υποτίθεται ότι έχει\n"
+"δοθεί η επιλογή -h.  Η κατάσταση εξόδου του π�ογ�άμματος είναι 0 αν β�έθηκε\n"
+"το ΥΠΟΔΕΙΓΜΑ, 1 αν δεν β�έθηκε και 2 αν π�οέκυψε κάποιο π�όβλημα.\n"
+
+# src/grep.c:829
+# src/grep.c:1112
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "ο�ίστηκαν αντικ�ουόμενα στοιχεία αναζήτησης"
+
+#: src/grep.c:2101
+#, fuzzy
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"η υποστή�ιξη για την επιλογή -P δεν είναι μεταγλωττισμένη σε αυτό το --"
+"disable-perl-regexp δυαδικό [α�χείο]"
+
+# src/dfa.c:556 src/dfa.c:562 src/dfa.c:573 src/dfa.c:584
+# src/dfa.c:564 src/dfa.c:570 src/dfa.c:581 src/dfa.c:592
+#: src/grep.c:2103
+#, fuzzy, c-format
+msgid "invalid matcher %s"
+msgstr "μη έγκυ�ος μέγιστος μετ�ητής"
+
+# src/grep.c:1133
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "άγνωστη μέθοδος συσκευών"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+# src/dfa.c:556 src/dfa.c:562 src/dfa.c:573 src/dfa.c:584
+# src/dfa.c:564 src/dfa.c:570 src/dfa.c:581 src/dfa.c:592
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "μη έγκυ�ος μέγιστος μετ�ητής"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "άγνωστο είδος δυαδικών α�χείων"
+
+#: src/grep.c:2829
+#, fuzzy
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"άλλοι, κοιτάξτε τον σ�νδεσμο <http://git.sv.gnu.org/cgit/grep.git/tree/"
+"AUTHORS>"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr ""
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "Η επιλογή -P υποστη�ίζει μόνο ένα υπόδειγμα"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr ""
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr ""
+
+# src/grep.c:144 src/grep.c:161 src/grep.c:222 src/grep.c:263 src/kwset.c:184
+# src/kwset.c:190
+# src/grep.c:164 src/grep.c:181 src/grep.c:283 src/grep.c:338 src/kwset.c:184
+# src/kwset.c:190
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "η μνήμη εξαντλήθηκε"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr ""
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr ""
+
+#: src/pcresearch.c:327
+#, fuzzy, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "εσωτε�ικό σφάλμα"
+
+# src/grep.c:293
+# src/grep.c:366
+#, fuzzy, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "π�οειδοποίηση: %s: %s\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "άκυ�η %s%s επιλογή «%s»"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "άκυ�η κατάληξη στην %s%s επιλογή «%s»"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "η %s%s επιλογή «%s» είναι υπε�βολικά μεγάλη"
+
+#, fuzzy
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "%s κεντ�ική σελίδα: <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "internal error"
+#~ msgstr "εσωτε�ικό σφάλμα"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+# src/getopt.c:652
+# src/getopt.c:652
+#, fuzzy
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: η επιλογή «--%s» δεν επιτ�έπει ο�ίσματα\n"
+
+# src/getopt.c:703
+# src/getopt.c:703
+#, fuzzy
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: μη αναγνω�ίσιμη επιλογή «--%s»\n"
+
+# src/getopt.c:813
+# src/getopt.c:813
+#, fuzzy
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: η επιλογή «-W %s» είναι διφο�ο�μενη\n"
+
+# src/getopt.c:831
+# src/getopt.c:831
+#, fuzzy
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: η επιλογή «-W %s» δεν δέχεται ο�ίσματα\n"
+
+# src/getopt.c:674 src/getopt.c:847
+# src/getopt.c:674 src/getopt.c:847
+#, fuzzy
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: η επιλογή «%s» απαιτεί ό�ισμα\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "To «egrep» είναι ισοδ�ναμο του «grep -E». Το «fgrep» είναι ισοδ�ναμο του\n"
+#~ "«grep -F».\n"
+#~ "Η άμεση επίκληση ως «egrep» ή «fgrep» έχει κατα�γηθεί.\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "αποτυχία του lseek"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "Το ΠΡΟΤΥΠΟ είναι μια εκτεταμένη κανονική έκφ�αση (ΕΚΕ).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr ""
+#~ "Η επίκληση ως «egrep» έχει κατα�γηθεί· χ�ησιμοποιήστε το «grep -E».\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr ""
+#~ "Η επίκληση ως «fgrep» έχει κατα�γηθεί· χ�ησιμοποιήστε το «grep -F».\n"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "η επιλογή --mmap δεν λειτου�γεί από το 2010"
diff --git a/src/grep/po/en@boldquot.header b/src/grep/po/en@boldquot.header
new file mode 100644
index 0000000..fedb6a0
--- /dev/null
+++ b/src/grep/po/en@boldquot.header
@@ -0,0 +1,25 @@
+# All this catalog "translates" are quotation characters.
+# The msgids must be ASCII and therefore cannot contain real quotation
+# characters, only substitutes like grave accent (0x60), apostrophe (0x27)
+# and double quote (0x22). These substitutes look strange; see
+# http://www.cl.cam.ac.uk/~mgk25/ucs/quotes.html
+#
+# This catalog translates grave accent (0x60) and apostrophe (0x27) to
+# left single quotation mark (U+2018) and right single quotation mark (U+2019).
+# It also translates pairs of apostrophe (0x27) to
+# left single quotation mark (U+2018) and right single quotation mark (U+2019)
+# and pairs of quotation mark (0x22) to
+# left double quotation mark (U+201C) and right double quotation mark (U+201D).
+#
+# When output to an UTF-8 terminal, the quotation characters appear perfectly.
+# When output to an ISO-8859-1 terminal, the single quotation marks are
+# transliterated to apostrophes (by iconv in glibc 2.2 or newer) or to
+# grave/acute accent (by libiconv), and the double quotation marks are
+# transliterated to 0x22.
+# When output to an ASCII terminal, the single quotation marks are
+# transliterated to apostrophes, and the double quotation marks are
+# transliterated to 0x22.
+#
+# This catalog furthermore displays the text between the quotation marks in
+# bold face, assuming the VT100/XTerm escape sequences.
+#
diff --git a/src/grep/po/en@quot.header b/src/grep/po/en@quot.header
new file mode 100644
index 0000000..a9647fc
--- /dev/null
+++ b/src/grep/po/en@quot.header
@@ -0,0 +1,22 @@
+# All this catalog "translates" are quotation characters.
+# The msgids must be ASCII and therefore cannot contain real quotation
+# characters, only substitutes like grave accent (0x60), apostrophe (0x27)
+# and double quote (0x22). These substitutes look strange; see
+# http://www.cl.cam.ac.uk/~mgk25/ucs/quotes.html
+#
+# This catalog translates grave accent (0x60) and apostrophe (0x27) to
+# left single quotation mark (U+2018) and right single quotation mark (U+2019).
+# It also translates pairs of apostrophe (0x27) to
+# left single quotation mark (U+2018) and right single quotation mark (U+2019)
+# and pairs of quotation mark (0x22) to
+# left double quotation mark (U+201C) and right double quotation mark (U+201D).
+#
+# When output to an UTF-8 terminal, the quotation characters appear perfectly.
+# When output to an ISO-8859-1 terminal, the single quotation marks are
+# transliterated to apostrophes (by iconv in glibc 2.2 or newer) or to
+# grave/acute accent (by libiconv), and the double quotation marks are
+# transliterated to 0x22.
+# When output to an ASCII terminal, the single quotation marks are
+# transliterated to apostrophes, and the double quotation marks are
+# transliterated to 0x22.
+#
diff --git a/src/grep/po/eo.gmo b/src/grep/po/eo.gmo
new file mode 100644
index 0000000..eafe051
--- /dev/null
+++ b/src/grep/po/eo.gmo
diff --git a/src/grep/po/eo.po b/src/grep/po/eo.po
new file mode 100644
index 0000000..c093a15
--- /dev/null
+++ b/src/grep/po/eo.po
@@ -0,0 +1,952 @@
+# Esperanto translations for GNU grep.
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2013, 2014, 2015, 2016, 2018, 2020, 2021 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+#
+# “Jeder ist seines Glückes Schmied,
+# aber nicht jeder ist ein guter Schmied.�
+#
+# D. Dale Gulledge <dsplat@rochester.rr.com>, 1999.
+# Edmund GRIMLEY EVANS <edmundo@rano.org>, 2000-2009.
+# Benno Schulenberg <benno@vertaalt.nl>, 2013, 2014, 2015, 2016, 2018, 2020.
+# Felipe CASTRO <fefcas@gmail.com>, 2021.
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-10 21:36-0300\n"
+"Last-Translator: Felipe Castro <fefcas@gmail.com>\n"
+"Language-Team: Esperanto <translation-team-eo@lists.sourceforge.net>\n"
+"Language: eo\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=2; plural=n != 1;\n"
+"X-Generator: Poedit 2.4.2\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "nevalida argumento %s por %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "ambigua argumento %s por %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Validaj argumentoj estas:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "programeraro"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "staktroo"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "skrib-eraro"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "senpara ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "nevalida signoklaso"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "sintakso de signoklaso estas ekzemple [[:spaco:]], ne [:spaco:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "nefinita \\-eskapo"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "nevalida enhavo de \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "regulesprimo tro grandas"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "senpara ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "neniu sintakso indikatas"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "senpara )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Nekonata sistemeraro"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: opcio «%s%s» estas ambigua\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: opcio «%s%s» estas ambigua; eblaĵoj estas:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: nekonata opcio «%s%s»\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: opcio «%s%s» ne toleras argumenton\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: opcio «%s%s» bezonas argumenton\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: nevalida opcio -- «%c»\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: opcio bezonas argumenton -- «%c»\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "mankas sufiĉa memoro"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "ne eblas registri aktualan labordosierujon"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "malsukcesis reveni al komenca labordosierujo"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "malsukcesis agordi tekstan/duuman moduson de dosierpriaĵo"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "«"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "»"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Sukceso"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Neniu trafo"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Nevalida regulesprimo"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Nevalida kunmetita signo"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Nevalida nomo de signoklaso"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Malsuprenstreko '\\' ĉe la fino"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Nevalida retroreferenco"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Senpara [, [^, [:, [., aÅ­ [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Senpara ( aÅ­ \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Senpara \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Nevalida enhavo de \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Nevalida fino de gamo"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Mankas sufiĉa memoro"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Nevalida antaÅ­a regulesprimo"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Neatendita fino de regulesprimo"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Regulesprimo tro grandas"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Senpara ) aÅ­ \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Mankas antaÅ­a regulesprimo"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Pakigita far %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Pakigita far %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Ĉi tiu estas libera programaro: vi rajtas �in �an�i kaj redistribui.\n"
+"La �usta permesilo estas GPLv3+: GNU GPL versio 3 aŭ sekva;\n"
+"por la kompleta (angla) teksto vidu <%s>.\n"
+"Ĉi tiu programaro ne garantiatas, ene de la limoj de la le�o.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Verkita de %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Verkita de %s kaj %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Verkita de %s, %s kaj %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Verkita de %s, %s, %s\n"
+"kaj %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Verkita de %s, %s, %s,\n"
+"%s kaj %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Verkita de %s, %s, %s,\n"
+"%s, %s kaj %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Verkita de %s, %s, %s,\n"
+"%s, %s, %s kaj %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Verkita de %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"kaj %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Verkita de %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s kaj %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Verkita de %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s kaj aliaj.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"Raportu programmisojn al <%s>;\n"
+"sciigu tradukerarojn al <translation-team-eo@lists.sourceforge.net>.\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Raportu programmisojn en %s al: <%s>\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Hejmpa�o de «%s»: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Äœenerala helpo por uzi GNU-programojn: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(ĉefenigujo)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "nevalida kuntekstlongeca argumento"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "enigo tro longas por nombri"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: duuma dosiero kongruas"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: averto: rikura ciklo de dosierujoj"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: eniga dosiero estas ankaÅ­ la eliga dosiero"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Uzmaniero:  %s [OPCIO...] ÅœABLONOJ [DOSIERO...]\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Tajpu '%s --help' por pli da informoj.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Serĉas ŜABLONOJn en ĉiu DOSIERO.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Ekzemplo: %s -i 'hello world' menu.h main.c\n"
+"ŜABLONOJ povas esti pluraj �ablonoj disigitaj per linifinoj.\n"
+"\n"
+"Elekto kaj interpreto de �ablono:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     ÅœABLONOJ estas etenditaj regulesprimoj\n"
+"  -F, --fixed-strings       ŜABLONOJ estas signoĉenoj\n"
+"  -G, --basic-regexp        ÅœABLONOJ estas bazaj regulesprimoj  (defaÅ­lta)\n"
+"  -P, --perl-regexp         ÅœABLONOJ estas regulesprimoj de Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=ÅœABLONOJ     uzi ÅœABLONOJn kiel regulesprimojn\n"
+"  -f, --file=DOSIERO        akiri la �ablonojn el DOSIERO\n"
+"  -i, --ignore-case         ignori diferencojn de uskleco, �ablone kaj "
+"datene\n"
+"      --no-ignore-case      ne ignori diferencojn de uskleco  (defaÅ­lta)\n"
+"  -w, --word-regexp         kongrui nur kun tutaj vortoj\n"
+"  -x, --line-regexp         kongrui nur kun tutaj linioj\n"
+"  -z, --null-data           datenlinio fini�as per bitoko 0, ne per "
+"linifino\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Diversaj:\n"
+"  -s, --no-messages         subpremi erarmesa�ojn\n"
+"  -v, --invert-match        elekti la nekongruajn liniojn\n"
+"  -V, --version             montri programversion kaj eliri\n"
+"      --help                montri ĉi tiun helpon kaj eliri\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Regado de la eligo:\n"
+"  -m, --max-count==NOMBRO   halti post NOMBRO da elektitaj linioj\n"
+"  -b, --byte-offset         montri la bitoknumeron kun eligataj linioj\n"
+"  -n, --line-number         montri la lininumeron kun eligataj linioj\n"
+"      --line-buffered       peli la eligon post ĉiu linio\n"
+"  -H, --with-filename       montri la dosiernomon antaÅ­ eligataj linioj\n"
+"  -h, --no-filename         subpremi la prefiksan dosiernomon ĉe eligo\n"
+"      --label=ETIKEDO       uzi ETIKEDOn kiel dosiernomon de ĉefenigujo\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       montri nur nevakajn kongruajn linipartojn\n"
+"  -q, --quiet, --silent     subpremi ĉian normalan eligadon\n"
+"      --binary-files=SPECO  supozi ke duumaj dosieroj estas de SPECO;\n"
+"                              SPECO estus 'binary' (duuma), "
+"'text' (teksta),\n"
+"                              aÅ­ 'without-match' (sen-trafa)\n"
+"  -a, --text                egalas al «--binary-files=text»\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        egalas al «--binary-files=without-match»\n"
+"  -d, --directories=AGO     kiel trakti dosierujojn; AGO estus "
+"'read' (legi),\n"
+"                              'recurse' (rikure), aÅ­ 'skip' (ignori)\n"
+"  -D, --devices=AGO         kiel trakti specialajn dosierojn;\n"
+"                              AGO estus 'read' (legi), aÅ­ 'skip' (ignori)\n"
+"  -R, -r, --recursive       egalas al «--directories=recurse»\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=ÅœABLONO     ekzameni nur dosierojn kiuj kongruas kun "
+"ÅœABLONO\n"
+"                              (dosiernom�ablonoj estas \"globbing\" "
+"�ablonoj)\n"
+"      --exclude=ÅœABLONO     ignori dosierojn kiuj kongruas kun ÅœABLONO\n"
+"      --exclude-from=DSRO   ignori dosierojn kiuj kongruas kun �ablono en "
+"DSRO\n"
+"      --exclude-dir=ÅœABLONO ignori dosierujojn kiuj kongruas kun ÅœABLONO\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match montri nur nomojn de dosieroj sen trafo\n"
+"  -l, --files-with-matches  montri nur nomojn de dosieroj kun trafoj\n"
+"  -c, --count               montri nur la nombron de kongruaj linioj\n"
+"                              en ĉiu dosiero\n"
+"  -T, --initial-tab         rektigi la TAB-signojn (se necesas)\n"
+"  -Z, --null                eligi la bitokon «0» post dosiernomo\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Regado de la kunteksto:\n"
+"  -B, --before-context=NOM  montri NOM liniojn da antaÅ­a kunteksto\n"
+"  -A, --after-context=NOM   montri NOM liniojn da posta kunteksto\n"
+"  -C, --context=NOMBRO      egalas al «-A NOMBRO -B NOMBRO»\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NOMBRO                   egalas al «--context=NOMBRO»\n"
+"      --group-separator=APT  montri APT en linio inter kongruoj kun "
+"kunteksto\n"
+"      --no-group-separator  ne montri apartigilon por kongruoj kun "
+"kunteksto\n"
+"      --color[=KIAM],\n"
+"      --colour[=KIAM]       uzi markilojn por distingi la kongruajn ĉenojn;\n"
+"                              KIAM estu 'always' (ĉiam), 'never' (neniam),\n"
+"                              aÅ­ 'auto'\n"
+"  -U, --binary              ne forigi \\r-signojn ĉe linifino (MSDOS/"
+"Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Kiam DOSIERO estas «-», ĉefenigujo legi�as.\n"
+"Kiam DOSIERO mankas, «.» legi�as se rikura, alie «-» legi�as.\n"
+"Kiam malpli ol du DOSIEROj indikatas, «-h» supozi�as.\n"
+"Elirstato estas 0 se iu linio elekti�is, alie 1;\n"
+"se iu eraro okazis kaj «-q» ne indikatis, elirstato estas 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "pluraj esprimtipoj indikatas"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Perla kongruo ne funkcias ĉar ĉi tiu programo kompili�is kun «--disable-perl-"
+"regexp»"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "nevalida esprimtipo %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "nekonata ago por aparatoj"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "averto: --unix-byte-offsets (-u) malaktualas"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "nevalida maksimuma nombro"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "nekonata ago por duumaj dosieroj"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Verkita de Majk HERTEL (Mike Haertel) kaj aliuloj; vidu\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "mankas sufiĉa memoro por la PCRE-JIT-stako"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "opcio «-P» subtenas nur unubajtajn kaj UTF-8-ajn lokaĵojn"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "opcio «-P» akceptas nur unuopan �ablonon"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "**interna eraro** (devus neniam okazi)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "transpasi�is linilongecan limon de PCRE"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: mankas sufiĉa memoro"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: la PCRE-JIT-stako tute pleni�is"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: transpasi�is retroreferencan limon de PCRE"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: transpasi�is rikuran limon de PCRE"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: interna eraro en PCRE: %d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr "averto: GREP_OPTIONS evitindas; bonvolu uzi 'alias' aÅ­ skripton"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "averto: %s: %s"
+
+#~ msgid "%s home page: <http://www.gnu.org/software/%s/>\n"
+#~ msgstr "Hejmpa�o de «%s»: http://www.gnu.org/software/%s/\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "nevalida argumento de %s%s: «%s»"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "nevalida sufikso en argumento de %s%s: «%s»"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "argumento de %s%s tro grandas: «%s»"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: opcio «--%s» ne toleras argumenton\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: nekonata opcio «--%s»\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: opcio «-W %s» estas plursenca\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: opcio «-W %s» ne toleras argumenton\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: opcio «-W %s» bezonas argumenton\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "malsukcesis 'lseek'"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "ÅœABLONO defaÅ­lte estas baza regulesprimo (BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "Rekta alvoko kiel aÅ­ 'egrep' aÅ­ 'fgrep' malrekomendatas;\n"
+#~ "'egrep' signifas 'grep -E; 'fgrep' signifas 'grep -F'.\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "seneskapa ^ aŭ $ ne subtenatas kun opcio «-Pz»"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "nevalida UTF-8-a bajtsekvenco en enigo"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "ÅœABLONO estas etendita regulesprimo (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr "Alvoko kiel 'egrep' malrekomendatas; uzu 'grep -E' anstataÅ­e.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "ŜABLONO estas aro da fiksitaj signoĉenoj en apartaj linioj.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr "Alvoko kiel 'fgrep' malrekomendatas; uzu 'grep -F' anstataÅ­e.\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s nur povas uzi sintakson de %s-�ablono"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "la opcio «--mmap» faras nenion, jam ekde 2010"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "nefinita ripetonombro"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "misformita ripetonombro"
+
+#~ msgid "writing output"
+#~ msgstr "skribi�as eligo"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE;\n"
+#~ "                            TYPE is `binary', `text', or `without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories;\n"
+#~ "                            ACTION is `read', `recurse', or `skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+#~ "                            ACTION is `read' or `skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=FILE_PATTERN  search only files that match FILE_PATTERN\n"
+#~ "      --exclude=FILE_PATTERN  skip files and directories matching "
+#~ "FILE_PATTERN\n"
+#~ "      --exclude-from=FILE   skip files matching any file pattern from "
+#~ "FILE\n"
+#~ "      --exclude-dir=PATTERN directories that match PATTERN will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match print only names of FILEs containing no "
+#~ "match\n"
+#~ "  -l, --files-with-matches  print only names of FILEs containing matches\n"
+#~ "  -c, --count               print only a count of matching lines per "
+#~ "FILE\n"
+#~ "  -T, --initial-tab         make tabs line up (if needed)\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Regado de la eligo:\n"
+#~ "  -m, --max-count==NOMBRO   halti post NOMBRO da trafoj\n"
+#~ "  -b, --byte-offset         presi la bitoknumeron kun eligataj linioj\n"
+#~ "  -n, --line-number         presi la lininumeron kun eligataj linioj\n"
+#~ "      --line-buffered       peli la eligon post ĉiu linio\n"
+#~ "  -H, --with-filename       presi la dosiernomon por ĉiu trafo\n"
+#~ "  -h, --no-filename         subpremi la prefiksan dosiernomon ĉe eligo\n"
+#~ "      --label=ETIKEDO       presi ETIKEDOn kiel dosiernomon de normala "
+#~ "enigo\n"
+#~ "  -o, --only-matching       montri nur la liniparton, kiu kongruas kun "
+#~ "ÅœABLONO\n"
+#~ "  -q, --quiet, --silent     subpremi ĉian normalan eligadon\n"
+#~ "      --binary-files=SPECO  supozi, ke binaraj dosieroj estas de SPECO\n"
+#~ "                            SPECO estas 'binary', 'text', aÅ­ 'without-"
+#~ "match'\n"
+#~ "  -a, --text                same kiel --binary-files=text\n"
+#~ "  -I                        same kiel --binary-files=without-match\n"
+#~ "  -d, --directories=AGO     kiel trakti dosierujojn; AGO estas "
+#~ "'read' (legi),\n"
+#~ "                            'recurse' (rekurse), aÅ­ 'skip' (ignori)\n"
+#~ "  -D, --devices=AGO         kiel trakti specialajn dosierojn;\n"
+#~ "                            AGO estas 'read' (legi), aÅ­ 'skip' (ignori)\n"
+#~ "  -R, -r, --recursive       same kiel --directories=recurse.\n"
+#~ "      --include=ÅœABLONO     ekzameni nur dosierojn, kiuj kongruas kun "
+#~ "ÅœABLONO\n"
+#~ "      --exclude=ÅœABLONO     ignori dosier(uj)ojn, kiuj kongruas kun "
+#~ "ÅœABLONO\n"
+#~ "      --exclude-from=DOS    ignori dosierojn, kiuj kongruas kun �ablono "
+#~ "en DOS\n"
+#~ "      --exclude-dir=ÅœABLONO ignori dosierujojn, kiuj kongruas kun "
+#~ "ÅœABLONO\n"
+#~ "  -L, --files-without-match presi nur dosiernomojn sen trafo\n"
+#~ "  -l, --files-with-matches  presi nur dosiernomojn kun trafoj\n"
+#~ "  -c, --count               presi nur nombron de kongruaj linioj en ĉiu "
+#~ "dosiero\n"
+#~ "  -T, --initial-tab         rektigi la TAB-signojn (se necese)\n"
+#~ "  -Z, --null                presi la bitokon 0 post dosiernomo\n"
+
+#~ msgid ""
+#~ "In GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped."
+#~ msgstr "En GREP_COLORS=\"%s\", \"%s\" bezonas valoron (\"=...\"); ignorite."
+
+#~ msgid ""
+#~ "In GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped."
+#~ msgstr ""
+#~ "En GREP_COLORS=\"%s\", \"%s\" estas bulea kaj ne povas alpreni valoron "
+#~ "(\"=%s\"); ignorite."
+
+#~ msgid "In GREP_COLORS=\"%s\", the \"%s\" capacity %s."
+#~ msgstr "En GREP_COLORS=\"%s\", \"%s\" %s."
+
+#~ msgid ""
+#~ "Stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\"."
+#~ msgstr ""
+#~ "Ĉesis pritrakti malbone formitan GREP_COLORS=\"%s\" ĉe restanta subĉeno "
+#~ "\"%s\"."
+
+#~ msgid "unknown directories method"
+#~ msgstr "nekonata dosieruja metodo"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Ne eblas kombini la opciojn -P kaj -z"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: malpermesata opcio -- %c\n"
+
+#~ msgid "Copyright (C) 2008 Free Software Foundation, Inc.\n"
+#~ msgstr "Kopirajto (C) 2008  Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions.  There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Ĉi tiu estas libera programo; vidu la fonton por kopikondiĉoj. Estas\n"
+#~ "NENIA GARANTIO, eĉ ne pri KOMERCA KVALITO aŭ ADEKVATECO POR DIFINITA "
+#~ "CELO.\n"
diff --git a/src/grep/po/es.gmo b/src/grep/po/es.gmo
new file mode 100644
index 0000000..2aafb9b
--- /dev/null
+++ b/src/grep/po/es.gmo
diff --git a/src/grep/po/es.po b/src/grep/po/es.po
new file mode 100644
index 0000000..6df416f
--- /dev/null
+++ b/src/grep/po/es.po
@@ -0,0 +1,951 @@
+# Mensajes en español para GNU grep.
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2010, 2011, 2013, 2014 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Enrique Melero Gómez <melero@eurolands.com>, 1996.
+# Santiago Vila Doncel <sanvila@unex.es>, 1997-2002, 2010, 2011, 2013, 2014.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU grep 2.19.12\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2014-07-11 18:53+0200\n"
+"Last-Translator: Santiago Vila Doncel <sanvila@unex.es>\n"
+"Language-Team: Spanish <es@tp.org.es>\n"
+"Language: es\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8-bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "argumento %s inválido %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "argumento %s ambiguo para %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Los argumentos válidos son:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "error de escritura"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ desemparejado"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "clase de caracteres inválida"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "la sintaxis de la clase de caracteres es [[:space:]], no [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "secuencia de escape \\ sin terminar"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "contenido inválido de \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "la expresión regular es demasiado grande"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( desemparejado"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "no se ha especificado ninguna sintaxis"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") desemparejado"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Error del sistema desconocido"
+
+#: lib/getopt.c:278
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: la opción '-W %s' es ambigua\n"
+
+#: lib/getopt.c:284
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: la opción '%s' es ambigua; posibilidades:"
+
+#: lib/getopt.c:319
+#, fuzzy, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: opción no reconocida '%c%s'\n"
+
+#: lib/getopt.c:345
+#, fuzzy, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: la opción '%c%s' no admite ningún argumento\n"
+
+#: lib/getopt.c:360
+#, fuzzy, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: la opción '--%s' requiere un argumento\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: opción inválida -- '%c'\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: la opción requiere un argumento -- '%c'\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "memoria agotada"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "no se puede registrar el directorio de trabajo actual"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "fallo al volver al directorio de trabajo inicial"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "«"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "»"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Éxito"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "No hay ninguna coincidencia"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Expresión regular inválida"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Carácter de unión inválido"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Nombre de clase de caracteres inválido"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Barra invertida al final"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Referencia hacia atrás inválida"
+
+#: lib/regcomp.c:156
+#, fuzzy
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "[ o [^ desemparejado"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( o \\( desemparejado"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ desemparejado"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Contenido inválido de \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Final de rango inválido"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Memoria agotada"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "La expresión regular precedente es inválida"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Final prematuro de la expresión regular"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "La expresión regular es demasiado grande"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") o \\) desemparejado"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "No hay ninguna expresión regular anterior"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Empaquetado por %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Empaquetado por %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, fuzzy, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"\n"
+"Licencia GPLv3+: GPL de GNU versión 3 o posterior\n"
+"<http://gnu.org/licenses/gpl.html>\n"
+"Esto es software libre: usted es libre de cambiarlo y redistribuirlo.\n"
+"No hay NINGUNA GARANT�A, hasta donde permite la ley.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Escrito por %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Escrito por %s y %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Escrito por %s, %s, y %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"y %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, y %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, y %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, y %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"y %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, y %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, y otros.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"Comunicar errores en el programa a: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Comunicar errores sobre %s a: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Página inicial de %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, fuzzy, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+"Ayuda general sobre el uso de software de GNU: <http://www.gnu.org/gethelp/"
+">\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(entrada estándar)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "longitud de contexto inválida"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "la entrada es demasiado grande para contar"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "Coincidencia en el fichero binario %s\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "bucle de directorio recursivo"
+
+#: src/grep.c:1899
+#, fuzzy, c-format
+msgid "%s: input file is also the output"
+msgstr "el fichero de entrada %s también es el de salida"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Modo de empleo: %s [OPCIÓN]... PATRÓN [FICHERO]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Pruebe '%s --help' para más información.\n"
+
+#: src/grep.c:1969
+#, fuzzy, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Busca PATRÓN en cada FICHERO o en la entrada estándar.\n"
+
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Ejemplo: %s -i 'hello world' menu.h main.c\n"
+"\n"
+"Selección e interpretación de Expreg:\n"
+
+#: src/grep.c:1975
+#, fuzzy, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     PATRÓN es una expresión regular extendida (ERE)\n"
+"  -F, --fixed-strings       PATRÓN es un conjunto de cadenas separadas por\n"
+"                            caracteres de nueva línea\n"
+"  -G, --basic-regexp        PATRÓN es una expresión regular básica (BRE)\n"
+"  -P, --perl-regexp         PATRÓN es una expresión regular en Perl\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=PATRÓN       utiliza PATRÓN como expresión regular\n"
+"  -f, --file=FICHERO        obtiene PATRÓN de FICHERO\n"
+"  -i, --ignore-case         considera iguales mayúsculas y minúsculas\n"
+"  -w, --word-regexp         obliga a que PATRÓN coincida solamente\n"
+"                            con palabras completas\n"
+"  -x, --line-regexp         obliga a que PATRÓN coincida solamente\n"
+"                            con líneas completas\n"
+"  -z, --null-data           una línea de datos termina en un byte 0, no\n"
+"                            en un carácter de nueva línea\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Variadas:\n"
+"  -s, --no-messages         suprime los mensajes de error\n"
+"  -v, --invert-match        selecciona las líneas que no coinciden\n"
+"  -V, --version             muestra la versión y finaliza\n"
+"      --help                muestra este texto de ayuda y finaliza\n"
+
+#: src/grep.c:1996
+#, fuzzy, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Control del resultado:\n"
+"  -m, --max-count=NÚM       se detiene después de NÚM coincidencias\n"
+"  -b, --byte-offset         muestra el desplazamiento en bytes junto\n"
+"                            con las líneas de salida\n"
+"  -n, --line-number         muestra el número de línea junto con\n"
+"                            las líneas de salida\n"
+"      --line-buffered       descarga el resultado para cada línea\n"
+"  -H, --with-filename       muestra el nombre del fichero para cada\n"
+"                            coincidencia\n"
+"  -h, --no-filename         suprime los nombres de los ficheros como "
+"prefijo\n"
+"                            en el resultado\n"
+"      --label=ETIQUETA      utiliza ETIQUETA como nombre de fichero prefijo\n"
+"                            para la entrada estándar\n"
+
+#: src/grep.c:2007
+#, fuzzy, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       muestra solamente la parte de una línea que\n"
+"                            encaja con PATRÓN\n"
+"  -q, --quiet, --silent     suprime todo el resultado normal\n"
+"      --binary-files=TIPO   supone que los ficheros binarios son TIPO\n"
+"                            TIPO es 'binary', 'text', o 'without-match'\n"
+"  -a, --text                equivalente a --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        equivalente a --binary-files=without-match\n"
+"  -d, --directories=ACCIÓN  especifica cómo manejar los directorios\n"
+"                            ACCIÓN es 'read', 'recurse', o 'skip'\n"
+"  -D, --devices=ACCIÓN      especifica cómo manejar dispositivos, FIFOs y\n"
+"                            `sockets', puede ser 'read' o 'skip'\n"
+"  -r, --recursive           equivalente a --directories=recurse\n"
+"  -R, --dereference-recursive  similar, pero sigue todos los enlaces "
+"simbólicos\n"
+
+#: src/grep.c:2023
+#, fuzzy, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=PATRÓN      examina los ficheros que encajan con PATRÓN\n"
+"      --exclude=PATRÓN      se salta los ficheros que encajan con PATRÓN\n"
+"      --exclude-from=FICHERO se salta los ficheros que encajan con los "
+"patrones\n"
+"                             de FICHERO\n"
+"      --exclude-dir=PATRÓN  se salta los directorios que encajan con PATRÓN\n"
+
+#: src/grep.c:2030
+#, fuzzy, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match muestra solamente los nombres de FICHEROs\n"
+"                            que no contienen ninguna coincidencia\n"
+"  -l, --files-with-matches  muestra solamente los nombres de FICHEROs\n"
+"                            que contienen alguna coincidencia\n"
+"  -c, --count               muestra solamente el total de líneas que "
+"coinciden\n"
+"                            por cada FICHERO\n"
+"  -Z, --null                imprime un byte 0 después del nombre del "
+"FICHERO\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Control del contexto:\n"
+"  -B, --before-context=NÚM  muestra NÚM líneas de contexto anterior\n"
+"  -A, --after-context=NÚM   muestra NÚM líneas de contexto posterior\n"
+"  -C, --context=NÚM         muestra NÚM líneas de contexto\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NÚM                      lo mismo que --context=NÚM\n"
+"      --color[=CU�NDO],\n"
+"      --colour[=CU�NDO]     distingue con marcadores la cadena que encaja\n"
+"                            CU�NDO puede ser 'always', 'never' o 'auto'.\n"
+"  -U, --binary              no elimina los caracteres de retorno de carro\n"
+"                            finales de línea (MSDOS/Windows)\n"
+"  -u, --unix-byte-offsets   cuenta los desplazamientos como si no hubiera\n"
+"                            retornos de carro (MSDOS/Windows)\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Cuando FICHERO es -, lee la entrada estándar.  Si no se especifica\n"
+"ningún FICHERO, lee . si se especifica -r en la línea de órdenes, o -\n"
+"en caso contrario.  Si se dan menos de dos FICHEROs, se supone -h. El\n"
+"estado de salida es 0 si hay coincidencias, 1 si no las hay; si ocurre\n"
+"algún error y no se especificó -q, el estado de salida es 2.\n"
+
+#  viendo los fuentes , hay varias opciones
+#  que hay sin documentar. O quizá es que getopt() lo he entendido mal
+#  Son las opciones X ( requiere argumento ) , switchs  -c, -b, -L e -y
+#  grep.c:622 ->
+#  opt = getopt(argc, argv, "0123456789A:B:CEFGVX:bce:f:hiLlnqsvwxy"
+#  grep --help ->
+#  usage: grep [-[[AB] ]<num>] [-[CEFGVchilnqsvwx]] [-[ef]] <expr> [<files...>]
+#  La opción -X es a la que corresponde esta línea.
+#
+# No me gusta nada lo de opción "a buscar".
+# Se admiten sugerencias. sv
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "se han especificado expresiones conflictivas"
+
+#: src/grep.c:2101
+#, fuzzy
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"el soporte para la opción -P no está compilado en este ejecutable --disable-"
+"perl-regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "expresión inválida %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "método de dispositivos desconocido"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "contador máximo inválido"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "tipo binary-files desconocido"
+
+#: src/grep.c:2829
+#, fuzzy
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr "otros, véase <http://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "fallo al asignar memoria para la pila JIT de PCRE"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr ""
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "la opción -P solamente admite un patrón"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "error interno (no debería ocurrir nunca)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "se ha excedido el límite de longitud de línea de las PCREs"
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "memoria agotada"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:315
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "se ha excedido el límite de vuelta atrás de las PCREs"
+
+#: src/pcresearch.c:319
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "se ha excedido el límite de vuelta atrás de las PCREs"
+
+#: src/pcresearch.c:327
+#, fuzzy, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "error interno de PCRE: %d"
+
+#, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "atención: %s: %s"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "argumento %s%s inválido '%s'"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "sufijo inválido en el argumento %s%s '%s'"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s argumento '%s' demasiado grande"
+
+#, fuzzy
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "página inicial de %s: <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "internal error"
+#~ msgstr "error interno"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: la opción '--%s' no admite ningún argumento\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: opción no reconocida '--%s'\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: la opción '-W %s' es ambigua\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: la opción '-W %s' no admite ningún argumento\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: la opción '-W %s' requiere un argumento\n"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "PATRÓN es, por omisión, una expresión regular básica (BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "'egrep' significa 'grep -E'.  'fgrep' significa 'grep -F'.\n"
+#~ "La invocación directa como 'egrep' o 'fgrep' está obsoleta.\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "falló la llamada al sistema `lskeek'"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Página inicial de GNU grep: <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "secuencia de bytes UTF-8 inválida en la entrada"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "PATRÓN es una expresión regular extendida (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr ""
+#~ "La invocación como 'egrep' está obsoleta; utilice 'grep -E' en su lugar.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "PATRÓN es un conjunto de cadenas fijas separadas por nueva línea\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr ""
+#~ "La invocación como 'fgrep' está obsoleta; utilice 'grep -F' en su lugar.\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s solamente puede usar la sintaxis de patrón %s"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "la opcion --mmap no hace nada desde 2010"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "contador de repetición sin terminar"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "contador de repetición erróneo"
+
+#~ msgid "writing output"
+#~ msgstr "escribiendo el resultado"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "en GREP_COLORS=\"%s\", la capacidad \"%s\" necesita un valor (\"=...\"); "
+#~ "saltado."
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "en GREP_COLORS=\"%s\", la capacidad \"%s\" es booleana y no puede tener "
+#~ "un valor (\"=%s\"); saltado."
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "en GREP_COLORS=\"%s\", la capacidad \"%s\" %s."
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "el proceso del erróneo GREP_COLORS=\"%s\" se detuvo en la subcadena \"%s"
+#~ "\"."
+
+# Nota: Se refiere a la opción --directories=ACCIÓN cuando ACCIÓN
+# no es `read', `recurse' o `skip'.
+#~ msgid "unknown directories method"
+#~ msgstr "método de directorios desconocido"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions.  There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Esto es software libre; vea el código fuente para las condiciones de "
+#~ "copia.\n"
+#~ "No hay NINGUNA garantía; ni siquiera de COMERCIABILIDAD o IDONEIDAD PARA "
+#~ "UN\n"
+#~ "FIN DETERMINADO.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Las opciones -P y -z no se pueden combinar"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: opción ilegal -- %c\n"
+
+# FIXME. Comunicar al autor que esto es repetición...
+#~ msgid "out of memory"
+#~ msgstr "memoria agotada"
+
+# FIXME: Dice [FILE] ... en vez de [FILE]... ¿Será un error?
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Modo de empleo: %s [OPCIÓN]... PATRÓN [FICHERO] ...\n"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid "option %s"
+#~ msgstr "opción %s"
+
+#~ msgid " with arg %s"
+#~ msgstr " con argumento %s"
+
+#~ msgid "digits occur in two different argv-elements.\n"
+#~ msgstr "aparecen dígitos en dos elementos de argv diferentes.\n"
+
+#~ msgid "option %c\n"
+#~ msgstr "opción %c\n"
+
+#~ msgid "option a\n"
+#~ msgstr "opción a\n"
+
+#~ msgid "option b\n"
+#~ msgstr "opción b\n"
+
+#~ msgid "option c with value `%s'\n"
+#~ msgstr "la opción c tiene el valor `%s'\n"
+
+#~ msgid "option d with value `%s'\n"
+#~ msgstr "la opción d tiene el valor `%s'\n"
+
+#~ msgid "?? getopt returned character code 0%o ??\n"
+#~ msgstr "?? getopt ha devuelto el carácter código 0%o ??\n"
+
+#~ msgid "non-option ARGV-elements: "
+#~ msgstr "elementos de ARGV que no son opciones: "
+
+#~ msgid "you may specify only one of -E, -F, or -G"
+#~ msgstr "sólo se puede especificar una de las opciones -E, -F, o -G"
+
+# Prefiero dejarlo en solamente un patrón
+# Pero entonces no queda claro que *debe haber uno*, y parece que
+# es uno como máximo (siendo el mínimo 0). sv
+#~ msgid ""
+#~ "There should be one and only one PATTERN, `-e PATTERN' or `-f FILE'.\n"
+#~ msgstr "Debe haber un y solamente un PATRÓN, `-e PATRÓN', o `-f FICHERO'.\n"
+
+#~ msgid "If no -[GEF], then -G is assumed.\n"
+#~ msgstr "Si no se especifica ninguna de las opciones -[GEF], se supone -G.\n"
diff --git a/src/grep/po/et.gmo b/src/grep/po/et.gmo
new file mode 100644
index 0000000..14a7c9c
--- /dev/null
+++ b/src/grep/po/et.gmo
diff --git a/src/grep/po/et.po b/src/grep/po/et.po
new file mode 100644
index 0000000..1aa20b7
--- /dev/null
+++ b/src/grep/po/et.po
@@ -0,0 +1,735 @@
+# This file is distributed under the same license as the grep package.
+# Estonian translations for grep
+# Copyright (C) 2000 Free Software Foundation, Inc.
+# Toomas Soome <tsoome@me.com>, 2021.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-09 11:00+0300\n"
+"Last-Translator: Toomas Soome <tsoome@me.com>\n"
+"Language-Team: Estonian <linux-ee@lists.eenet.ee>\n"
+"Language: et\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8-bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "vigane argument %s võtmele %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "segane argument %s võtmele %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Lubatud argumendid on:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "programmi viga"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "pinu ületäitumine"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "viga kirjutamisel"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "balanseerimata ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "vigane sümboliklass"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "sümbolklassi süntaks on [[:space:]], mitte [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "lõpetamata \\ paojada"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "vigane \\{\\} sisu"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "regulaaravaldis on liiga suur"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "balanseerimata ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "süntaksit pole määratud"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "balanseerimata )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Tundmatu süsteemi viga"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: võti '%s%s' on segane\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: võti '%s%s' on segane; võimalused:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: tundmatu võti '%s%s'\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: võti '%s%s' ei luba argumenti\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: võti '%s%s' nõuab argumenti\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: vigane võti -- '%c'\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: võti nõuab argumenti -- '%c'\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "mälu on otsas"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "ei õnnestu salvestada jooksvat töökataloogi"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "algsesse töökataloogi ei saa tagasi minna"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "failipideme tekst/binaar moodi muutmine ebaõnnestus"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "`"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Edukas"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Vastet pole"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Vigane regulaaravaldis"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Vigane sortimise sümbol"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Vigane sümbolklassi nimi"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Lõpetav langkriips"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Vigane tagasi viide"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Puudub [, [^, [:, [. või [= paariline"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Puudub ( või \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Puudub \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Vigane \\{\\} sisu"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Vigane vahemiku lõpp"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Mälu on otsas"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Vigane eelnev regulaaravaldis"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Ootamatu reagulaaravaldise lõpp"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Regulaaravaldis on liiga suur"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Puudub ) või \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Eelnevat regulaaravaldist pole"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Pakendanud %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Pakendanud %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Litsents GPLv3+: GNU GPL versioon 3 või uuem <%s>\n"
+"See on vaba tarkvara: teil on lubatud seda muuta ja levitada.\n"
+"Garantii PUUDUB; vastavalt seadustega lubatud piiridele.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Kirjutanud %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Kirjutanud %s ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Kirjutanud %s, %s, ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Kirjutanud %s, %s, %s,\n"
+"ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Kirjutanud %s, %s, %s,\n"
+"%s, ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Kirjutanud %s, %s, %s,\n"
+"%s, %s, ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Kirjuatanud %s, %s, %s,\n"
+"%s, %s, %s, ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Kirjutanud %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Kirjutanud %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Kirjutanud %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, ja teised.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Teatage palun vigadest: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Teatage palun %s vigadest: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "%s koduleht: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Ãœldine abiinfo GNU tarkvara kohta: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standardsisend)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "vigane konteksti pikkuse argument"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "sisend on loendamiseks liiga suur"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: binaarfail sobib"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: hoiatus: rekursiivne kataloogipuu tsükkel"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: sisendfail on ühtlasi ka väljund"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Kasutamine: %s [VÕTI]... MUSTRID [FAIL] ...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Lisainfo saamiseks proovige võtit '%s --help'.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Otsi MUSTREID igast FAIList.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Näiteks: %s -i 'tere kõik' menu.h main.c\n"
+"MUSTRID võivad sisaldada mitut reavahetusega eraldatud mustrit.\n"
+"\n"
+"Mustri valik ja interpreteerimine:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     MUSTRID on laiendatud regulaaravaldised\n"
+"  -F, --fixed-strings       MUSTRID on hulk reavahetustega eraldatud "
+"sõnesid\n"
+"  -G, --basic-regexp        MUSTRID on lihtsad regulaaravaldised "
+"(vaikimisi)\n"
+"  -P, --perl-regexp         MUSTRID on Perl regulaaravaldised\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=MUSTER       kasuta regulaaravaldistena\n"
+"  -f, --file=FAIL           loe MUSTRID failist FAIL\n"
+"  -i, --ignore-case         tõstutundetu\n"
+"      --no-ignore-case      tõstutundlik (vaikimisi)\n"
+"  -w, --word-regexp         kasuta MUSTRIT sõnade leidmiseks\n"
+"  -x, --line-regexp         kasuta MUSTRIT ridade leidmiseks\n"
+"  -z, --null-data           andmerida lõppeb baidil 0, mitte reavahetusel\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Muud:\n"
+"  -s, --no-messages         blokeeri veateated\n"
+"  -v, --invert-match        vali mitte-sobivad read\n"
+"  -V, --version             esita versiooniinfo ja lõpeta töö\n"
+"      --help                esita see abiinfo ja lõpeta töö\n"
+"\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Väljundi kontroll:\n"
+"  -m, --max-count=NUM       peatu peale NUM rida\n"
+"  -b, --byte-offset         väljasta koos ridadega ka baidi indeks\n"
+"  -n, --line-number         väljasta koos ridadega ka reanumber\n"
+"      --line-buffered       tühjenda väljund igal real\n"
+"  -H, --with-filename       väljasta iga leiuga failinimi\n"
+"  -h, --no-filename         blokeeri väljundis failinimi\n"
+"      --label=MÄRGEND       kasuta väljundis failinime asemel märgendit\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       näita ainult mustriga sobivat mittetühja reaosa\n"
+"  -q, --quiet, --silent     blokeeri kogu tavaline väljund\n"
+"      --binary-files=TÜÜP   eelda binaarfailide tüüpi;\n"
+"                            TÜÜP on 'binary', 'text', või 'without-match'\n"
+"  -a, --text                sama, kui --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        sama, kui --binary-files=without-match\n"
+"  -d, --directories=TEGEVUS kuidas käsitleda katalooge;\n"
+"                            TEGEVUS on 'read', 'recurse' või 'skip'\n"
+"  -D, --devices=TEGEVUS     kuidas käsitleda seadmeid, FIFOsid ja "
+"pistikuid;\n"
+"                            TEGEVUS on 'read' või 'skip'\n"
+"  -r, --recursive           sama, kui --directories=recurse\n"
+"  -R                        sama, aga järgib kõiki nimeviiteid\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=FAILI_MUSTER  otsi alinult mustrile vastavaid faile\n"
+"      --exclude=FAILI_MUSTER  välista mustrile vastavad failid\n"
+"      --exclude-from=FAIL    välista failid vastavalt failist loetud "
+"mustrile\n"
+"      --exclude-dir=MUSTER   välista mustrile vastavad kataloogid.\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  väljasta ainult failide nimed, mis ei sobinud\n"
+"  -l, --files-with-matches  väljasta ainult leitud failide nimed\n"
+"  -c, --count               väljasta ainult leitud ridade arv faili kohta\n"
+"  -T, --initial-tab         kasuta vajadusel ridade joondamisel "
+"tabulaatorit\n"
+"  -Z, --null                väljasta faili nime järel bait 0\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Konteksti kontroll:\n"
+"  -B, --before-context=NUM  väljasta NUM rida eelnevat konteksti\n"
+"  -A, --after-context=NUM   väljasta NUM rida järgnevat konteksti\n"
+"  -C, --context=NUM         väljasta NUM rida väljundi konteksti\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      sama, kui --context=NUM\n"
+"      --group-separator=ER  väljasta ER kontekstiga leidude vahel\n"
+"      --no-group-separator  leidude eraldajat ei väljastata\n"
+"      --color[=MILLAL],\n"
+"      --colour[=MILLAL]     kasuta otsitava sõne eristamiseks markereid\n"
+"                            MILLAL võib olla 'always', 'never' või 'auto'.\n"
+"  -U, --binary              ära eemalda rea lõpust CR sümboleid (MSDOS/"
+"WINDOWS)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Kui fail on '-', loe standardsisendit. Kui faili ei antud ja kasutati võtit -"
+"r,\n"
+"loe '.', muidu '-'. Kui anti vähem kui kaks faili, eelda -h. \n"
+"Lõpetamise kood on 0, kui rida leiti, muidu 1;\n"
+"kui tekkis viga ja -q ei kasutatud, on lõpetamise kood 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "määrati konfliktsed otsijad"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Perl regulaaravaldisi ei toetata --disable-perl-regexp kompileerimise võtmega"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "vigane sobitaja %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "tundmatu seadmete meetod"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "hoiatus: --unix-byte-offsets (-u) on aegunud"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "vigane maksimum"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "tundmatu kahendfailide tüüp"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Kirjutanud Mike Haertel ja teised; vaadake\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "PCRE JIT magasini jaoks ei jätku mälu"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P toetab ainult ühebaidilisi ja UTF-8 lokaate"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "võti -P toetab ainult ühte mustrit"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "sisemine viga (ei peaks kunagi juhtuma)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "PCRE rea pikkuse piirang on ületatud"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: mälu on otsas"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: PCRE JIT pinu sai täis"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: PCRE tagasivaate piirang on ületatud"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: PCRE rekursiooni piirang on ületatud"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: sisemine PCRE viga: %d"
diff --git a/src/grep/po/eu.gmo b/src/grep/po/eu.gmo
new file mode 100644
index 0000000..47fffd6
--- /dev/null
+++ b/src/grep/po/eu.gmo
diff --git a/src/grep/po/eu.po b/src/grep/po/eu.po
new file mode 100644
index 0000000..dd15a8a
--- /dev/null
+++ b/src/grep/po/eu.po
@@ -0,0 +1,831 @@
+# Basque translation of grep.
+# Copyright (C) 2004 Free Software Foundation, Inc.
+# Mikel Olasagasti <hey_neken@mundurat.net>, 2004, 2005.
+# , fuzzy
+#
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 2.5.1a\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2005-03-03 21:40+0100\n"
+"Last-Translator: Mikel Olasagasti <hey_neken@mundurat.net>\n"
+"Language-Team: Basque <translation-team-eu@lists.sourceforge.net>\n"
+"Language: eu\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=2; plural=(n == 1)\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr ""
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr ""
+
+#: lib/dfa.c:896
+#, fuzzy
+msgid "unbalanced ["
+msgstr "Parekatu gabeko ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr ""
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr ""
+
+#: lib/dfa.c:1210
+#, fuzzy
+msgid "unfinished \\ escape"
+msgstr "Amaitu gabeko \\ eskapea"
+
+#: lib/dfa.c:1371
+#, fuzzy
+msgid "invalid content of \\{\\}"
+msgstr "baliogabeko gehienezko zenbaketa"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr ""
+
+#: lib/dfa.c:1858
+#, fuzzy
+msgid "unbalanced ("
+msgstr "Parekatu gabeko ("
+
+#: lib/dfa.c:1975
+#, fuzzy
+msgid "no syntax specified"
+msgstr "Ez da sintaxirik zehaztu"
+
+#: lib/dfa.c:1986
+#, fuzzy
+msgid "unbalanced )"
+msgstr "Parekatu gabeko )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Sistemaren errore ezezaguna"
+
+#: lib/getopt.c:278
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: `%s' aukera anbiguoa da\n"
+
+#: lib/getopt.c:284
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: `%s' aukera anbiguoa da\n"
+
+#: lib/getopt.c:319
+#, fuzzy, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: aukera ezezaguna `%c%s'\n"
+
+#: lib/getopt.c:345
+#, fuzzy, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: `%c%s' aukerak ez du argumenturik onartzen\n"
+
+#: lib/getopt.c:360
+#, fuzzy, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: `%s' aukerak argumentu bat behar du\n"
+
+#: lib/getopt.c:621
+#, fuzzy, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: balio gabeko aukera -- %c\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, fuzzy, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: aukerak argumentu bat behar du -- %c\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "memoria agortuta"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr ""
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr ""
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "`"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr ""
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr ""
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Memoria agortuta"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ""
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr ""
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr ""
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr ""
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr ""
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"Programa-erroreen berri emateko idatzi hona <bug-grep@gnu.org>.\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr ""
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(sarrera estandarra)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "balio gabeko testuinguru luzeera argumentua"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "sarrera luzeegia da kontatzeko"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "%s fitxategi binarioa bat dator\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "direktorio bukle errekurtsiboa"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr ""
+
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Erabilera: %s [AUKERA]... EREDUA [FITXATEGIA]...\n"
+
+#: src/grep.c:1963
+#, fuzzy, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Saiatu `%s --help' informazio gehiagorako.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr ""
+
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"EREDUA bilatzen du FITXATEGI bakoitzean edo sarrera estandarrean.\n"
+"Adibidez: %s -i 'kaixo mundu' menu.h main.c\n"
+"\n"
+"Regexp aukera eta interpretazioa:\n"
+
+#: src/grep.c:1975
+#, fuzzy, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     EREDUA espresio erregular zabaldu bat da\n"
+"  -F, --fixed-strings       EREDUA lerro berri batekin banatutako kate "
+"multzo bat da\n"
+"  -G, --basic-regexp        EREDUA oinarrizko espresio erregular bat da\n"
+"  -P, --perl-regexp         EREDUA Perl espresio erregular bat da\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=EREDUA      erabili EREDUA espresio erregular bezala\n"
+"  -f, --file=FITXATEGIA           lortu EREDUA FITXATEGITIK\n"
+"  -i, --ignore-case         ez ezberdindu letra larri eta xeheak\n"
+"  -w, --word-regexp         behartu EREDUA hitz osoekin bakarrik bat "
+"etortzea\n"
+"  -x, --line-regexp         behartu EREDUA lerro osoekin bakarrik bat "
+"etortzea\n"
+"  -z, --null-data           datu lerroa 0 byte-arekin amaitzen da, eta ez "
+"lerro berriarekin\n"
+
+#: src/grep.c:1989
+#, fuzzy, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Hainbat:\n"
+"  -s, --no-messages         errore mezuak kentzen ditu\n"
+"  -v, --invert-match        bat ez datozen lerroak aukeratzen ditu\n"
+"  -V, --version             bertsioaren informazioa inprimatu eta irten\n"
+"      --help                laguntza hau erakutsi eta irten\n"
+"      --mmap                erabili asignatutako memoria sarrera posible "
+"bada\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"\n"
+"Kontestu kontrola:\n"
+"  -B, --before-context=KOPURUA  inprimatu kontestuaren aurretiko lerro "
+"KOPURUA\n"
+"  -A, --after-context=KOPURUA   inprimatu kontestuaren ondorengo lerro "
+"KOPURUA\n"
+"  -C, --context=KOPURUA         inprimatu kontestuaren lerro KOPURUA\n"
+"  -KOPURUA                      --context=KOPURUA bezala\n"
+"      --color[=NOIZ],\n"
+"      --colour[=NOIZ]       erabili markak bat datozen kateak ezberdintzeko\n"
+"                            NOIZ `always', `never' edo `auto' izan daiteke.\n"
+"  -U, --binary              ez kendu CR karaktereak lerro bukaeran (MSDOS)\n"
+"  -u, --unix-byte-offsets   hartu kontutan offsetak CRak bertan egongo ez "
+"balira bezala (MSDOS)\n"
+"\n"
+"`egrep'-ek`grep -E' esan nahi du.  `fgrep'-ek `grep -F' esan nahi du.\n"
+"Fitxategirik gabe, edo FITXATEGIA - denean, sarrera estandarra irakurtzen "
+"da.  BI fitxategi\n"
+"baina gutxiago ematen badira, -h ulertzen da.  Irteera egoera 0 da bat "
+"badator, 1 ez badator,\n"
+"eta 2 arazorik badago.\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "espresio konfliktiboak espezifikatu dira"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+
+#: src/grep.c:2103
+#, fuzzy, c-format
+msgid "invalid matcher %s"
+msgstr "baliogabeko gehienezko zenbaketa"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "gailu metodo ezezaguna"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "baliogabeko gehienezko zenbaketa"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "fitxategi-binario moeta ezezaguna"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr ""
+
+#: src/pcresearch.c:143
+#, fuzzy
+msgid "the -P option only supports a single pattern"
+msgstr "-P aukerak ez du euskarririk"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr ""
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr ""
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "memoria agortuta"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr ""
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr ""
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr ""
+
+#, fuzzy, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "abisua: %s: %s\n"
+
+#, fuzzy
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: `--%s' aukerak ez du argumenturik onartzen\n"
+
+#, fuzzy
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: aukera ezezaguna `--%s'\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: `-W %s' aukera ambiguoa da\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: `-W %s' aukerak ez du argumenturik onartzen\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: `%s' aukerak argumentu bat behar du\n"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "amaitu gabeko errepikapen zenbatzailea"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "gaizki eratutako errepikapen zenbatzailea"
+
+#~ msgid "out of memory"
+#~ msgstr "memoriatik kanpo"
+
+#~ msgid "writing output"
+#~ msgstr "irteera idazten"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Erabilera: %s [AUKERA]... EREDUA [FITXATEGIA] ...\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE\n"
+#~ "                            TYPE is 'binary', 'text', or 'without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories\n"
+#~ "                            ACTION is 'read', 'recurse', or 'skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets\n"
+#~ "                            ACTION is 'read' or 'skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=PATTERN     files that match PATTERN will be examined\n"
+#~ "      --exclude=PATTERN     files that match PATTERN will be skipped.\n"
+#~ "      --exclude-from=FILE   files that match PATTERN in FILE will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match only print FILE names containing no match\n"
+#~ "  -l, --files-with-matches  only print FILE names containing matches\n"
+#~ "  -c, --count               only print a count of matching lines per "
+#~ "FILE\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Irteera kontrola:\n"
+#~ "  -m, --max-count=KOPURUA       gelditu KOPURUA bilatzean\n"
+#~ "  -b, --byte-offset         inprimatu offset byte-a lerro irteerekin\n"
+#~ "  -n, --line-number         inprimatu lerro zenbakia lerro irteerekin\n"
+#~ "      --line-buffered       irauli irteera lerro bakoitzean\n"
+#~ "  -H, --with-filename       inprimatu fitxategi-izena bat datorren "
+#~ "aurkiketa bakoitzean\n"
+#~ "  -h, --no-filename         fitxategi-izena kendu irteeran\n"
+#~ "      --label=ETIKETA         inprimatu ETIKETA fitxategi-izen bezala "
+#~ "sarrera estandarrean\n"
+#~ "  -o, --only-matching       erakutsi EREDUAREKIN bat datorren lerroaren "
+#~ "zatia bakarrik\n"
+#~ "  -q, --quiet, --silent     kendu irteera normal guztiak\n"
+#~ "      --binary-files=MOETA   fitxategi binarioak MOETA bezala direlakoan "
+#~ "hartu\n"
+#~ "                            MOETA 'binary', 'text', edo 'without-match' "
+#~ "izan daiteke\n"
+#~ "  -a, --text                --binary-files=text bezala\n"
+#~ "  -I                        --binary-files=without-match bezala\n"
+#~ "  -d, --directories=EKINTZA  nola erabili direktorioak\n"
+#~ "                            EKINTZA 'read', 'recurse', edo 'skip' izan "
+#~ "daiteke\n"
+#~ "  -D, --devices=EKINTZA      nola erabili gailuak, FIFO eta socketak\n"
+#~ "                            EKINTZA 'read' edo 'skip' izan daiteke\n"
+#~ "  -R, -r, --recursive       --directories=recurse bezala\n"
+#~ "      --include=EREDUA     EREDUAREKIN bat datozen fitxategiak aztertu\n"
+#~ "      --exclude=EREDUA     EREDUAREKIN bat datozen fitxategiak utzi.\n"
+#~ "      --exclude-from=FITXATEGIA   EREDUA betetzen duten fitxategiak "
+#~ "FITXATEGIAN utzi.\n"
+#~ "  -L, --files-without-match inprimatu bateraketarik ez duten FITXATEGIAK "
+#~ "bakarrik\n"
+#~ "  -l, --files-with-matches  inprimatu bateraketaren bat duten FITXATEGIAK "
+#~ "bakarrik\n"
+#~ "  -c, --count               inprimatu bateraketa kopurua FITXATEGI "
+#~ "bakoitzeko bakarrik\n"
+#~ "  -Z, --null                inprimatu 0 byte-a FITXATEGIAREN izenaren "
+#~ "ondoren\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "direktorio metodo ezezaguna"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+#~ msgstr ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions. There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Software librea da, ikusi programa-kodea kopiatzeko baldintzentzat. EZ "
+#~ "dago inolako bermerik;\n"
+#~ "ez KOMERTZIO ez ASMO ZEHATZ BATEN EGOKITASUNERAKO.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "-P eta -z aukerak ezin dira konbinatu"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: ezinezko aukera -- %c\n"
diff --git a/src/grep/po/fi.gmo b/src/grep/po/fi.gmo
new file mode 100644
index 0000000..5b8a791
--- /dev/null
+++ b/src/grep/po/fi.gmo
diff --git a/src/grep/po/fi.po b/src/grep/po/fi.po
new file mode 100644
index 0000000..3dc535d
--- /dev/null
+++ b/src/grep/po/fi.po
@@ -0,0 +1,982 @@
+# Finnish translation for GNU grep.
+# Copyright © 2002, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2018 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Sami J. Laine <sami.laine@iki.fi>, 2002.
+# Jorma Karvonen <karvonen.jorma@gmail.com>, 2007-2016, 2018.
+# Lauri Nurmi <lanurmi@iki.fi>, 2019-2021.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-09 10:37+0300\n"
+"Last-Translator: Lauri Nurmi <lanurmi@iki.fi>\n"
+"Language-Team: Finnish <translation-team-fi@lists.sourceforge.net>\n"
+"Language: fi\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"X-Generator: Poedit 3.0\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "virheellinen argumentti %s kohteelle %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "monimerkityksellinen argumentti %s kohteelle %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Kelvolliset argumentit ovat:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "ohjelmavirhe"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "pinon ylivuoto"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "kirjoitusvirhe"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "pariton ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "virheellinen merkkiluokka"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "merkkiluokkasyntaksi on [[:space:]], ei [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "keskeneräinen \\-ohjaussarja"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "virheellinen \\{\\}:n sisältö"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "säännöllinen lauseke on liian suuri"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "pariton ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "syntaksia ei ole määritelty"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "pariton )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Tuntematon järjestelmävirhe"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: valitsin �%s%s� on moniselitteinen\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: valitsin �%s%s� on moniselitteinen; vaihtoehdot:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: tunnistamaton valitsin �%s%s�\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: valitsin �%s%s� ei salli argumenttia\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: valitsin �%s%s� vaatii argumentin\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: virheellinen valitsin -- �%c�\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: valitsin vaatii argumentin -- �%c�\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "muisti loppui"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "nykyisen työhakemiston kirjaaminen ei onnistu"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "palaaminen alkuperäiseen työhakemistoon epäonnistui"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "tiedostokahvan teksti-/binääritilan asettaminen epäonnistui"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "�"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "�"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Onnistui"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Ei täsmäävyyttä"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Virheellinen säännöllinen lauseke"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Virheellinen vertailumerkki"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Virheellinen merkkiluokan nimi"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Kenoviiva lopussa"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Virheellinen takaisinviittaus"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Pariton [, [^, [:, [. tai [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Pariton ( tai \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Pariton \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Virheellinen \\{\\}:n sisältö"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Virheellinen välin loppu"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Muisti loppui"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Virheellinen edeltävä säännöllinen lauseke"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Ennenaikainen säännöllisen lausekkeen loppu"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Säännöllinen lauseke on liian suuri"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Pariton ) tai \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Ei edeltävää säännöllistä lauseketta"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Paketoinut %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Paketoinut %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Lisenssi GPLv3+: GNU GPL versio 3 tai myöhäisempi <%s>.\n"
+"Tämä on vapaa ohjelma: voit vapaasti muuttaa ja jakaa sitä edelleen.\n"
+"Ohjelmalla EI OLE TAKUUTA siinä laajuudessa kuin laki sen sallii.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Kirjoittanut %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Kirjoittaneet %s ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Kirjoittaneet %s, %s ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Kirjoittaneet %s, %s,\n"
+"%s ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Kirjoittaneet %s, %s, %s,\n"
+"%s ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Kirjoittaneet %s, %s, %s,\n"
+"%s, %s ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Kirjoittaneet %s, %s, %s,\n"
+"%s, %s, %s ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Kirjoittaneet %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Kirjoittaneet %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s ja %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Kirjoittaneet %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, %s ja muut.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Ilmoita ohjelmistovioista (englanniksi) osoitteeseen: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Ilmoita %s ohjelmistovioista (englanniksi) osoitteeseen %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "%s -kotisivu: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Yleisohjeita GNU-ohjelmistojen käyttöön: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(vakiosyöte)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "virheellinen kontekstin pituusargumentti"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "syöte on liian suuri laskettavaksi"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: binääritiedosto täsmää"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: varoitus: rekursiivinen hakemistosilmukka"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: syötetiedosto on myös tuotostiedosto"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Käyttö: %s [VALITSIN]... HAHMOT [TIEDOSTO]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Komento �%s --help� antaa lisää tietoa.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Hae HAHMOja kustakin TIEDOSTOsta.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Esimerkki: %s -i 'hei maailma' menu.h main.c\n"
+"HAHMOT voivat sisältää useita rivinvaihdoin\n"
+"eroteltuja hahmoja.\n"
+"\n"
+"Hahmojen valinta ja tulkinta:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     HAHMOT ovat laajennettuja säännöllisiä\n"
+"                              lausekkeita\n"
+"  -F, --fixed-strings       HAHMOT ovat merkkijonoja\n"
+"  -G, --basic-regexp        HAHMOT ovat tavallisia säännöllisiä\n"
+"                              lausekkeita (oletus)\n"
+"  -P, --perl-regexp         HAHMOT ovat Perl-tyyppisiä säännöllisiä\n"
+"                              lausekkeita\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=HAHMOT       käytä HAHMOja täsmäämiseen\n"
+"  -f, --file=TIEDOSTO       ota HAHMOT TIEDOSTOsta\n"
+"  -i, --ignore-case         älä erottele pieniä ja suuria kirjaimia\n"
+"                              hahmoissa eikä datassa\n"
+"  -w, --word-regexp         täsmää vain kokonaisiin sanoihin\n"
+"  -x, --line-regexp         täsmää vain kokonaisiin riveihin\n"
+"  -z, --null-data           datarivi päättyy 0-tavuun, ei rivinvaihtoon\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Sekalaista:\n"
+"  -s, --no-messages         vaienna virheilmoitukset\n"
+"  -v, --invert-match        valitse täsmäämättömät rivit\n"
+"  -V, --version             näytä versiotiedot ja poistu\n"
+"      --help                näytä tämä ohje ja poistu\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Tulostehallinta:\n"
+"  -m, --max-count=MÄÄRÄ     pysäytä MÄÄRÄn täsmäävän rivin jälkeen\n"
+"  -b, --byte-offset         tulosta tavusiirros tulosteriveille\n"
+"  -n, --line-number         tulosta rivinumero tulosteriveille\n"
+"      --line-buffered       huuhtele tuloste joka rivillä\n"
+"  -H, --with-filename       tulosta tiedostonimi tulosteriveille\n"
+"  -h, --no-filename         vaienna tiedostonimet tulosteesta\n"
+"      --label=NIMIÖ         tulosta NIMIÖ tiedostonimenä vakiosyötteelle\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       näytä vain täsmäävien rivien epätyhjät osat\n"
+"  -q, --quiet, --silent     vaienna kaikki normaali tuloste\n"
+"      --binary-files=TYYPPI otaksu, että binääritiedostot ovat TYYPPIä;\n"
+"                            TYYPPI on �binary�, �text�, tai �without-match�\n"
+"  -a, --text                sama kuin --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        sama kuin --binary-files=without-match\n"
+"  -d, --directories=TEKO    kuinka käsitellä hakemistoja;\n"
+"                            TEKO on �read�, �recurse�, tai �skip�\n"
+"  -D, --devices=TEKO        kuinka käsitellä laitteita, FIFOja ja "
+"pistokkeita;\n"
+"                            TEKO on �read� tai �skip�\n"
+"  -r, --recursive           sama kuin --directories=recurse\n"
+"  -R, --dereference-recursive  samoin, mutta seuraa kaikkia symlinkkejä\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB        etsi vain GLOBiin (tiedostohahmo) täsmäävistä\n"
+"                              tiedostoista\n"
+"      --exclude=GLOB        ohita GLOBiin täsmäävät tiedostot ja hakemistot\n"
+"      --exclude-from=TIED   ohita mihin tahansa TIEDoston tiedostohahmoon\n"
+"                              täsmäävät tiedostot\n"
+"      --exclude-dir=GLOB    ohita GLOBiin täsmäävät hakemistot\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match tulosta vain TIEDOSTOjen nimet, joissa ei yhtään "
+"valittua riviä\n"
+"  -l, --files-with-matches  tulosta vain TIEDOSTOjen nimet, joissa on "
+"valittuja rivejä\n"
+"  -c, --count               tulosta vain valittujen rivien lukumäärä "
+"TIEDOSTOa kohden\n"
+"  -T, --initial-tab         kohdista sarkaimet (jos tarpeellista)\n"
+"  -Z, --null                tulosta 0-tavu TIEDOSTOnimen jälkeen\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Kontekstin hallinta:\n"
+"  -B, --before-context=N    tulosta N riviä edeltävää konteksia\n"
+"  -A, --after-context=N     tulosta N riviä seuraavaa kontekstia\n"
+"  -C, --context=N           tulosta N riviä tulostekonteksia\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -MÄÄRÄ                    sama kuin --context=MÄÄRÄ\n"
+"      --group-separator=EROT tulosta EROTin kontekstillisten täsmäävyyksien\n"
+"                            välisille riveille\n"
+"      --no-group-separator  älä tulosta erotinta kontekstillisille\n"
+"                            täsmäävyyksille\n"
+"      --color[=KUN],\n"
+"      --colour[=KUN]        korosta täsmäävyydet väreillä;\n"
+"                            KUN voi olla �always� (aina), �never�\n"
+"                            (ei koskaan) tai �auto�.\n"
+"  -U, --binary              jätä CR-merkit rivien loppuun (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Kun TIEDOSTO on �-�, lue vakiosyötettä. Ilman TIEDOSTOa lue �.� jos\n"
+"haetaan rekursiivisesti, muuten �-� . Jos alle kaksi TIEDOSTOa\n"
+"on annettu, oleta valitsin -h.\n"
+"Paluuarvo on 0, jos mikä tahansa rivi valitaan, muuten 1; jos\n"
+"tapahtuu mikä tahansa virhe ja -q on antamatta, paluuarvo on 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "määritelty ristiriitaiset täsmäimet"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Perl-täsmäystä ei tueta --disable-perl-regexp -valitsimellisessa käännöksessä"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "virheellinen täsmäin %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "tuntematon laitteiden käsittelytapa"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "varoitus: --unix-byte-offsets (-u) on vanhentunut"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "virheellinen enimmäismäärä"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "tuntematon binääritiedostojen tyyppi"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Kirjoittaneet Mike Haertel ja muut; ks.\n"
+"<http://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "muistin varaaminen PCRE JIT -pinolle epäonnistui"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P tukee vain yksitavu- ja UTF-8-maa-asetustoja"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "valitsin -P tukee vain yhtä hahmoa"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "sisäinen virhe (ei pitäisi koskaan tapahtua)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "ylitettiin PCRE:n rivipituusraja"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: muisti loppui"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: PCRE JIT -pino täyttyi"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: ylitettiin PCRE:n paluujäljitysraja"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: ylitettiin PCRE:n rekursioraja"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: sisäinen PCRE-virhe: %d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr "varoitus: GREP_OPTIONS on vanhentunut; käytä aliasta tai skriptiä"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "varoitus: %s: %s"
+
+#~ msgid "Binary file %s matches\n"
+#~ msgstr "Binääritiedosto %s täsmää\n"
+
+#~ msgid "%s home page: <http://www.gnu.org/software/%s/>\n"
+#~ msgstr "%s kotisivu: <http://www.gnu.org/software/%s/>\n"
+
+#  Ensimmäinen parametri on valitsimen väliviivat, toinen valitsin, kolmas argumentti
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "virheellinen valitsimen %s%s argumentti ’%s’"
+
+#  Ensimmäinen parametri on valitsimen väliviivat, toinen valitsin ja kolmas sen argumentti
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "virheellinen loppuliite valitsimen %s%s argumentissa ’%s’"
+
+#  Ensimmäinen parametri on valitsimen väliviivat, toinen valitsin ja kolmas sen argumentti
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "valitsimen %s%s argumentti ’%s’ on liian iso"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "sisäinen virhe"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: valitsin ’--%s’ ei salli argumenttia\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: tuntematon valitsin ’--%s’\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: valitsin ’-W %s’ ei ole yksiselitteinen\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: valitsin ’-W %s’ ei salli argumenttia\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: valitsin ’-W %s’ tarvitsee argumentin\n"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "HAKULAUSEKE on oletuksena perussäännöllinen lauseke (BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "Käsky ’egrep’ tarkoittaa ’grep -E’.  Käsky ’fgrep’ tarkoittaa ’grep -F’.\n"
+#~ "Suora kutsuminen ’egrep’- ja ’fgrep’-käskyillä ei ole enää "
+#~ "suositeltavaa.\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "lseek epäonnistui"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "GNU Grep-kotisivu: <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "virheellinen UTF-8-tavusekvenssi syötteessä"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "HAKULAUSEKE on laajennettu säännöllinen lauseke (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr ""
+#~ "Kutsuminen ’egrep’ käskyllä ei ole enää suositeltavaa, käytä sen sijaan "
+#~ "käskyä ’grep -E’.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "HAKULAUSEKE on rivinvaihdolla eroteltu kiinteä merkkijonojoukko.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr ""
+#~ "Kutsuminen ’fgrep’ käskyllä ei ole enää suositeltavaa, käytä sen sijaan "
+#~ "käskyä ’grep -F’.\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s voi käyttää vain %s hakulausekesyntaksia"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "valitsin --mmap ei ole toiminut vuoden 2010 jälkeen"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "päättymätön toistomäärä"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "virheellinen toistomäärä"
+
+#  Tämä liittyy virheilmoitukseen, jossa alussa on ilmeisesti virhenumero
+#~ msgid "writing output"
+#~ msgstr "kirjoitettaessa tulostetta"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "kohteessa GREP_COLORS=�%s�, �%s�-kapasiteetti tarvitsee arvon (�=...�); "
+#~ "jätettiin väliin"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "kohteessa GREP_COLORS=�%s�, �%s�-kapasiteetti on boolean-tyyppinen ja se "
+#~ "ei voi saada arvoa (�=%s�); jätettiin väliin"
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "kohteessa GREP_COLORS=�%s�, �%s�-kapasiteetti %s"
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "pysäytettiin vääränmuotoisen kohteen GREP_COLORS=�%s� prosessointi "
+#~ "jäljelle jäävässä osamerkkijonossa �%s�"
+
+#~ msgid "unknown directories method"
+#~ msgstr "tuntematon hakemistometodi"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE;\n"
+#~ "                            TYPE is `binary', `text', or `without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories;\n"
+#~ "                            ACTION is `read', `recurse', or `skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+#~ "                            ACTION is `read' or `skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=FILE_PATTERN  search only files that match FILE_PATTERN\n"
+#~ "      --exclude=FILE_PATTERN  skip files and directories matching "
+#~ "FILE_PATTERN\n"
+#~ "      --exclude-from=FILE   skip files matching any file pattern from "
+#~ "FILE\n"
+#~ "      --exclude-dir=PATTERN directories that match PATTERN will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match print only names of FILEs containing no "
+#~ "match\n"
+#~ "  -l, --files-with-matches  print only names of FILEs containing matches\n"
+#~ "  -c, --count               print only a count of matching lines per "
+#~ "FILE\n"
+#~ "  -T, --initial-tab         make tabs line up (if needed)\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Tulosteen hallinta:\n"
+#~ "  -m, --max-count=N         lopeta kun N täsmäystä on löytynyt\n"
+#~ "  -b, --byte-offset         tulosta tavuosoite tulosteriveille\n"
+#~ "  -n, --line-number         tulosta rivinumero tulosteriveille\n"
+#~ "      --line-buffered       tyhjennä puskuri jokaisella tulosterivillä\n"
+#~ "  -H, --with-filename       tulosta tiedostonimi jokaiselle täsmäykselle\n"
+#~ "  -h, --no-filename         vaienna tiedostonimen tulostaminen\n"
+#~ "      --label=OTSIKKO       tulosta OTSIKKO tiedostonimenä luettaessa\n"
+#~ "                            vakiosyöttettä\n"
+#~ "  -o, --only-matching       näytä vain HAKULAUSEKE-täsmäävä osa rivistä\n"
+#~ "  -q, --quiet, --silent     vaienna kaikki normaalit tulosteet\n"
+#~ "      --binary-files=TYYPPI oleta binääristen tiedostojen olevan TYYPPIä\n"
+#~ "                            TYYPPI on �binary� (binääri), "
+#~ "�text� (teksti), tai\n"
+#~ "                            �without-match� (täsmäämätön)\n"
+#~ "  -a, --text                sama kuin --binary-files=�text� (teksti)\n"
+#~ "  -I                        sama kuin --binary-files=�without-"
+#~ "match� (täsmäämätön)\n"
+#~ "  -d, --directories=TOIMI   hakemistojen käsittelytapa\n"
+#~ "                            TOIMI on �read� (lue), �recurse� (itseensä "
+#~ "palautuva),\n"
+#~ "                            tai �skip� (jätä väliin)\n"
+#~ "  -D, --devices=TOIMI       laitetiedostojen, FIFOjen ja pistokkeiden "
+#~ "käsittely\n"
+#~ "                            TOIMI on �read� (lue) tai �skip� (jätä "
+#~ "väliin)\n"
+#~ "  -R, -r, --recursive         sama kuin --directories=recurse\n"
+#~ "      --include=TIEDOSTOKAAVA TIEDOSTOKAAVA-täsmäävät tiedostot "
+#~ "tutkitaan\n"
+#~ "      --exclude=TIEDOSTOKAAVA TIEDOSTOKAAVA-täsmäävät tiedostot jätetään "
+#~ "tutkimatta\n"
+#~ "      --exclude-from=TIEDOSTO TIEDOSTOKAAVA-täsmäävät tiedostot, joiden "
+#~ "nimet\n"
+#~ "                              luetaan TIEDOSTOsta, jätetään tutkimatta\n"
+#~ "  -L, --files-without-match tulosta vain TIEDOSTOt, joista ei löydy "
+#~ "täsmäystä\n"
+#~ "  -l, --files-with-matches  tulosta vain TIEDOSTOt, joista löytyy "
+#~ "täsmäys\n"
+#~ "  -c, --count               tulosta vain täsmäysten määrä TIEDOSTOlle\n"
+#~ "  -T, --initial-tab         tee sarkaimet riveittäin (jos tarvitaan)\n"
+#~ "  -Z, --null                tulosta nollatavu TIEDOSTO-nimen jälkeen\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Valitsimia �-P� ja �-z� ei voida käyttää samanaikaisesti"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: epäkelpo valitsin -- %c\n"
+
+#~ msgid "Copyright (C) 2010 Free Software Foundation, Inc.\n"
+#~ msgstr "Copyright © 2010 Free Software Foundation, Inc.\n"
+
+#~ msgid "`egrep' means `grep -E'.  `fgrep' means `grep -F'.\n"
+#~ msgstr "�egrep� tarkoittaa �grep -E�.  �fgrep� tarkoittaa �grep -F�.\n"
+
+#~ msgid "Direct invocation as either `egrep' or `fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "Suora kutsuminen joko komennolla �egrep� tai �fgrep� on vanhentunut.\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Miscellaneous:\n"
+#~ "  -s, --no-messages         suppress error messages\n"
+#~ "  -v, --invert-match        select non-matching lines\n"
+#~ "  -V, --version             print version information and exit\n"
+#~ "      --help                display this help and exit\n"
+#~ "\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Sekalaista:\n"
+#~ "  -s, --no-messages         vaienna virheilmoitukset\n"
+#~ "  -v, --invert-match        valitse hakuun täsmäämättömät rivit\n"
+#~ "  -V, --version             tulosta versiotiedot ja poistu\n"
+#~ "      --help                tulosta tämä ohje ja poistu\n"
+#~ "\n"
diff --git a/src/grep/po/fr.gmo b/src/grep/po/fr.gmo
new file mode 100644
index 0000000..f56b1e3
--- /dev/null
+++ b/src/grep/po/fr.gmo
diff --git a/src/grep/po/fr.po b/src/grep/po/fr.po
new file mode 100644
index 0000000..4d79e49
--- /dev/null
+++ b/src/grep/po/fr.po
@@ -0,0 +1,781 @@
+# Messages français pour GNU concernant grep.
+# Copyright © 2002, 2005, 2009, 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+#
+# Michel Robitaille <robitail@IRO.UMontreal.CA>, 2002, 2005.
+# Nicolas Provost <nprovost@quadriv.com>, 2009, 2010.
+# Jean-Christophe Helary <jean.christophe.helary@gmail.com>, 2011.
+# David Prévot <david@tilapin.org>, 2012-2014.
+# Stéphane Aulery <lkppo@free.fr>, 2016, 2017, 2019, 2020.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU grep 3.5.16\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2020-12-15 20:56+0100\n"
+"Last-Translator: Stéphane Aulery <lkppo@free.fr>\n"
+"Language-Team: French <traduc@traduc.org>\n"
+"Language: fr\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=2; plural=(n > 1);\n"
+"X-Generator: Poedit 2.4.2\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "argument %s incorrect pour %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "argument %s ambigu pour %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Les arguments valables sont :"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "erreur du programme"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "débordement de pile"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "erreur d'écriture"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ non apparié"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "classe de caractères incorrecte"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "la syntaxe d'une classe de caractères est [[:space:]], pas [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "séquence d'échappement \\ non terminée"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "contenu de \\{\\} incorrect"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "expression rationnelle trop grande"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( non appariée"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "aucune syntaxe indiquée"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") non appariée"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Erreur système inconnue"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s : l'option « %s%s » est ambiguë\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s : l'option « %s%s » est ambiguë ; possibilités :"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s : option « %s%s » non reconnue\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s : l'option « %s%s » n'accepte pas d'argument\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s : l'option « %s%s » nécessite un argument\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s : option incorrecte — « %c »\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s : l'option nécessite un argument — « %c »\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "mémoire épuisée"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "impossible d'enregistrer le répertoire de travail actuel"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "échec de retour au répertoire initial de travail"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+"l’obtention d’un descripteur de fichier en mode text / binaire a échoué"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "« "
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr " »"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Réussite"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Pas de correspondance"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Expression rationnelle incorrecte"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Caractère de collation incorrect"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Nom de classe de caractères incorrect"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Barre oblique inverse finale"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Référence arrière incorrecte"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "[, [^, [:, [. ou [= sans correspondance"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( ou \\( sans correspondance"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ sans correspondance"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Contenu de \\{\\} incorrect"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Fin d'intervalle incorrecte"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Mémoire épuisée"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Expression rationnelle précédente incorrecte"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Fin prématurée d'expression rationnelle"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Expression rationnelle trop grande"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") ou \\) sans correspondance"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Pas d'expression rationnelle précédente"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Empaqueté par %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Empaqueté par %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Licence GPLv3+: GNU GPL version 3 ou ultérieure <%s>.\n"
+"Logiciel libre : vous êtes libre de le modifier ou de le redistribuer.\n"
+"Il n'y a AUCUNE GARANTIE, dans les limites autorisées par la loi.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Écrit par %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Écrit par %s et %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Écrit par %s, %s et %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Écrit par %s, %s, %s,\n"
+"et %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Écrit par %s, %s, %s,\n"
+"%s, et %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Écrit par %s, %s, %s,\n"
+"%s, %s, et %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Écrit par %s, %s, %s,\n"
+"%s, %s, %s, et %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Écrit par %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"et %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Écrit par %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, et %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Écrit par %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, et d'autres.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Signalez toute anomalie à : %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Signalez les anomalies de %s à : %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Page d'accueil de %s : <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Aide globale sur les logiciels GNU : <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(entrée standard)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "argument de longueur de contexte incorrect"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "taille des données en entrée trop importante pour compter"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s : fichiers binaires correspondent"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s : attention : boucle de répertoire récursive"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s : le fichier d'entrée est aussi le fichier de sortie"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Usage : %s [OPTION]... MOTIFS [FICHIER]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr ""
+"Exécutez « %s --help » pour obtenir des renseignements complémentaires.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Chercher des MOTIFS dans chaque FICHIER.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Exemple : %s -i 'Bonjour, le monde' menu.h main.c\n"
+"\n"
+"MOTIFS peut contenir plusieurs motifs séparés par des sauts de ligne.\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     MOTIFS sont des expressions rationnelles "
+"étendues\n"
+"  -F, --fixed-regexp        MOTIFS sont des chaînes\n"
+"  -G, --basic-regexp        MOTIFS sont des expressions rationnelles "
+"ordinaires\n"
+"  -P, --perl-regexp         MOTIFS sont des expressions rationnelles Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=MOTIFS       utiliser MOTIFS pour la recherche\n"
+"  -f, --file=FICHIER        charger les MOTIFS depuis un FICHIER\n"
+"  -i, --ignore-case         ignorer la différence de casse des motifs et "
+"données\n"
+"  -w, --word-regexp         rechercher des mots entiers\n"
+"  -x, --line-regexp         rechercher des lignes entières\n"
+"  -z, --null-data           finir les lignes de données par un octet nul, "
+"pas une saut de ligne\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Divers :\n"
+"  -s, --no-messages         supprimer les messages d'erreur\n"
+"  -v, --invert-match        sélectionner les lignes sans correspondance\n"
+"  -V, --version             afficher le nom et la version du logiciel\n"
+"      --help                afficher l'aide et quitter\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Contrôle de la sortie :\n"
+"  -m, --max-count=NOMBRE    arrêter après NOMBRE de ligne sélectionnées\n"
+"  -b, --byte-offset         afficher la position en octet avec la sortie\n"
+"  -n, --line-number         afficher le numéro de ligne avec la sortie\n"
+"      --line-buffered       vider le tampon après chaque ligne\n"
+"  -H, --with-filename       afficher le nom de fichier avec les lignes\n"
+"  -h, --no-filename         supprimer le préfixe de nom de fichier en "
+"sortie\n"
+"      --label=ÉTIQUETTE     utiliser ÉTIQUETTE pour le préfixe d'entrée "
+"standard\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       n'afficher que la partie de ligne "
+"correspondante\n"
+"  -q, --quiet, --silent     supprimer tout affichage vers la sortie "
+"standard\n"
+"      --binary-files=TYPE   considérer que les fichiers binaires sont de "
+"type\n"
+"                            TYPE : « binary », « text » ou « without-"
+"match »\n"
+"  -a, --text                identique à --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        identique à --binary-files=without-match\n"
+"  -d, --directories=ACTION  la façon de traiter les répertoires ;\n"
+"                            ACTION est « read », « recurse » ou « skip »\n"
+"  -D, --devices=ACTION      la façon de traiter les périphériques, les "
+"FIFOS\n"
+"                            et les sockets ; ACTION est « read » ou "
+"« skip »\n"
+"  -r, --recursive           identique à --directories=recurse\n"
+"  -R, --dereference-recursive  similaire, mais avec suivi des liens "
+"symboliques\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB        ne chercher que les fichiers correspondants à "
+"GLOB (motif de fichier)\n"
+"      --exclude=GLOB        ignorer les fichiers correspondants à GLOB\n"
+"      --exclude-from=FICHIER    ignorer les fichiers correspondants aux "
+"motifs contenus dans un FICHIER\n"
+"      --exclude-dir=GLOB    ignorer les répertoires correspondants à GLOB\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match n'afficher que les fichiers sans lignes "
+"sélectionnées\n"
+"  -l, --files-with-matches  n'afficher que les fichiers avec des lignes "
+"sélectionnées\n"
+"  -c, --count               n'afficher que le nombre de lignes sélectionnées "
+"par FICHIER\n"
+"  -T, --initial-tab         insérer des tabulations (si nécessaire)\n"
+"  -Z, --null                afficher l'octet nul après le nom de fichier\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Contrôle de contexte :\n"
+"  -B, --before-context=NBRE afficher NBRE lignes de contexte avant\n"
+"  -A, --after-context=NBRE  afficher NBRE lignes de contexte après\n"
+"  -C, --context=NBRE        afficher NBRE lignes de contexte en sortie\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NOMBRE                   identique à --context=NOMBRE\n"
+"      --color[=QUAND],\n"
+"      --colour[=QUAND]      mettre en évidence les correspondances ; QUAND "
+"est\n"
+"                            « always » (toujours) « never » (jamais) ou "
+"« auto »\n"
+"  -U, --binary              ne pas enlever les retours chariot en fin de "
+"ligne (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Si FICHIER vaut « - », lire l'entrée standard. Sans FICHIER, lire « . ».\n"
+"Si mode récursif, autrement « - »\n"
+"Si moins de deux fichiers sont indiqués, supposer -h.\n"
+"Le code d'erreur est 0 si une ligne est sélectionnée, 1 autrement ;\n"
+"en cas d'erreur et si l'option -q n'est pas présente, le code est 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "opérateurs de correspondance indiqués en conflit"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Correspondance Perl non prise en charge pour un binaire construit avec "
+"l'option --disable-perl-regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "motif de correspondance incorrect %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "méthode d'examen des périphériques inconnue"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "décompte maximal incorrect"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "type de fichier binaire inconnu"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Écrit par Mike Haertel et d'autres ; voir\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "échec d’allocation mémoire pour la pile JIT PCRE"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P ne fonctionne qu’avec des paramètres régionaux monooctets ou UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "l'option -P ne permet d'utiliser qu'un seul motif"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "erreur interne (ça ne devrait jamais arriver)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "limite de longueur de ligne des PCRE dépassée"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s : mémoire épuisée"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s : pile PCRE JIT épuisée"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s : limite de retour arrière des PCRE dépassée"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s : limite de récursion PCRE dépassée"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s : erreur PCRE interne : %d"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "Avertissement : %s : %s"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "Avertissement : GREP_OPTIONS doit être abandonnée ; veuillez utiliser un "
+#~ "alias ou un script"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "Page d'accueil de %s : <https://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "argument %s%s incorrect « %s »"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "suffixe incorrect dans l'argument %s%s « %s »"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "argument %s%s « %s » trop grand"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "erreur interne"
diff --git a/src/grep/po/ga.gmo b/src/grep/po/ga.gmo
new file mode 100644
index 0000000..ea4b57a
--- /dev/null
+++ b/src/grep/po/ga.gmo
diff --git a/src/grep/po/ga.po b/src/grep/po/ga.po
new file mode 100644
index 0000000..e3f1f02
--- /dev/null
+++ b/src/grep/po/ga.po
@@ -0,0 +1,957 @@
+# Irish translations for grep.
+# Copyright (C) 2003 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Kevin Patrick Scannell <scannell@SLU.EDU>, 2003, 2007, 2009, 2011, 2017.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.0.23-b00\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2017-06-25 05:18-0600\n"
+"Last-Translator: Kevin Scannell <kscanne@gmail.com>\n"
+"Language-Team: Irish <gaeilge-gnulinux@lists.sourceforge.net>\n"
+"Language: ga\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "argóint neamhbhailí %s le haghaidh %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "argóint dhébhríoch %s le haghaidh %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Na hargóintí bailí:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "earráid sa scríobh"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ corr"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "Aicme charachtar neamhbhailí"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr ""
+"Is é [[:space:]] an chomhréir cheart in aicme carachtar, in ionad [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "Seicheamh éalúcháin \\ gan chríochnú"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "ábhar neamhbhailí laistigh de \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "slonn ionadaíochta rómhór"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( corr"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "níor sonraíodh aon chomhréir"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") corr"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Earráid anaithnid chórais"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: tá rogha '%s%s' débhríoch\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: tá rogha '%s%s' débhríoch; féidearthachtaí:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: rogha anaithnid '%s%s'\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: ní cheadaítear argóint i ndiaidh rogha '%s%s'\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: tá argóint de dhíth i ndiaidh rogha '%s%s'\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: rogha neamhbhailí -- '%c'\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: tá argóint de dhíth i ndiaidh na rogha -- '%c'\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "cuimhne ídithe"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "ní féidir an chomhadlann oibre a fháil"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "níorbh fhéidir filleadh ar an mbunchomhadlann oibre"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "níorbh fhéidir mód téacs/dénártha an tuairisceora comhaid a shocrú"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "`"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "D'éirigh leis"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Níl a leithéid ann"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Slonn ionadaíochta neamhbhailí"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Carachtar neamhbhailí cóimheasa"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Ainm neamhbhailí ar aicme charachtar"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Cúlslais ag an deireadh"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Cúltagairt neamhbhailí"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "[, [^, [:, [., nó [= corr"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( nó \\( corr"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ corr"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "�bhar neamhbhailí laistigh de \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Deireadh raoin neamhbhailí"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Cuimhne ídithe"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Tá an slonn ionadaíochta roimhe seo neamhbhailí"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Deireadh an tsloinn gan choinne"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Slonn ionadaíochta rómhór"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") nó \\) corr"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Níl aon slonn ionadaíochta roimhe seo"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Arna phacáistiú ag %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Arna phacáistiú ag %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, fuzzy, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"\n"
+"Ceadúnas GPLv3+: GNU GPL leagan 3 nó níos nuaí <http://gnu.org/licenses/gpl."
+"html>.\n"
+"Is saorbhogearra é seo: ceadaítear duit é a athrú agus a athdháileadh.\n"
+"Níl baránta AR BITH ann, an oiread atá ceadaithe de réir dlí.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Scríofa ag %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Scríofa ag %s agus %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Scríofa ag %s, %s, agus %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Scríofa ag %s, %s, %s,\n"
+"agus %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Scríofa ag %s, %s, %s,\n"
+"%s, agus %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Scríofa ag %s, %s, %s,\n"
+"%s, %s, agus %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Scríofa ag %s, %s, %s,\n"
+"%s, %s, %s, agus %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Scríofa ag %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"agus %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Scríofa ag %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, agus %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Scríofa ag %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, agus daoine eile nach iad.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"Seol tuairiscí ar fhabhtanna chuig: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Seol tuairiscí ar fhabhtanna i %s chuig: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Leathanach baile %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, fuzzy, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+"Cabhair ghinearálta maidir le bogearraí GNU: <http://www.gnu.org/gethelp/>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(gnáth-ionchur)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "tá an argóint a shonraíonn fad an chomhthéacs neamhbhailí"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "tá an t-ionchur rómhór le háireamh"
+
+# using lit. "matching string" throughout for "match" - KPS
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "Teaghrán comhoiriúnach sa chomhad dhénártha %s\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "lúb athchúrsach i gcomhadlann"
+
+#: src/grep.c:1899
+#, fuzzy, c-format
+msgid "%s: input file is also the output"
+msgstr "is ionann an t-inchomhad %s agus an t-aschomhad"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Úsáid: %s [ROGHA]... PATRÚN [COMHAD]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Bain triail as '%s --help' chun tuilleadh eolais a fháil.\n"
+
+#: src/grep.c:1969
+#, fuzzy, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Déan cuardach ar PATRÚN i ngach COMHAD.\n"
+
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Mar shampla: %s -i 'dia duit' rogha.h príomh.c\n"
+"\n"
+"Roghnú agus léirmhíniú patrún:\n"
+
+#: src/grep.c:1975
+#, fuzzy, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     is slonn ionadaíochta breisithe é PATRÚN\n"
+"  -F, --fixed-strings       is tacar teaghrán é PATRÚN, línte nua eatarthu\n"
+"  -G, --basic-regexp        is slonn ion. bunúsach é PATRÚN (réamhshocrú)\n"
+"  -P, --perl-regexp         is slonn ionadaíochta Perl é PATRÚN\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=PATRÚN       déan cuardach ar PATRÚN\n"
+"  -f, --file=COMHAD         faigh PATRÚN as COMHAD\n"
+"  -i, --ignore-case         déan neamhaird de chás na litreacha\n"
+"  -w, --word-regexp         meaitseálann PATRÚN focail iomlána amháin\n"
+"  -x, --line-regexp         meaitseálann PATRÚN línte iomlána amháin\n"
+"  -z, --null-data           léiríonn beart '0' deireadh na líne (vs. \\n)\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Roghanna éagsúla:\n"
+"  -s, --no-messages         ná taispeáin teachtaireachtaí earráide\n"
+"  -v, --invert-match        taispeáin na línte GAN teaghrán comhoiriúnach\n"
+"  -V, --version             taispeáin eolas faoin leagan agus scoir\n"
+"      --help                taispeáin an chabhair seo agus scoir\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Rialú aschurtha:\n"
+"  -m, --max-count=UIMHIR    stop i ndiaidh UIMHIR líne chomhoiriúnach\n"
+"  -b, --byte-offset         taispeáin an fritháireamh birt san aschur\n"
+"  -n, --line-number         taispeáin líne-uimhreacha san aschur\n"
+"      --line-buffered       sruthlú an aschuir i ndiaidh gach líne\n"
+"  -H, --with-filename       taispeáin ainm comhaid le línte comhoiriúnacha\n"
+"  -h, --no-filename         ná taispeáin ainmneacha comhad mar réimír\n"
+"      --label=LIPÉAD        úsáid LIPÉAD mar ainm ar an ngnáth-ionchur\n"
+
+#: src/grep.c:2007
+#, fuzzy, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       ná taispeáin ach an teaghrán comhoiriúnach\n"
+"  -q, --quiet, --silent     múch an gnáth-aschur\n"
+"      --binary-files=CINE�L glac le comhaid dhénártha mar CINE�L;\n"
+"                            CINE�L = 'binary', 'text', nó 'without-match'\n"
+"  -a, --text                ar comhbhrí le '--binary-files=text'\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        ar comhbhrí le '--binary-files=without-match'\n"
+"  -d, --directories=MODH    modh oibre le haghaidh comhadlanna;\n"
+"                            MODH = 'read', 'recurse', nó 'skip'\n"
+"  -D, --devices=MODH        modh oibre le haghaidh gléasanna, FIFOnna,\n"
+"                              agus soicéid; MODH = 'read' nó 'skip'\n"
+"  -r, --recursive           ar comhbhrí le '--directories=recurse'\n"
+"  -R, --dereference-recursive  mar an gcéanna, ach lean naisc shiombalacha\n"
+
+#: src/grep.c:2023
+#, fuzzy, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=PATRÚN      déan cuardach i gcomhaid chomhoiriúnacha amháin\n"
+"      --exclude=PATRÚN      ná déan cuardach i gcomhaid chomhoiriúnacha\n"
+"      --exclude-from=COMHAD ná déan cuardach i gcomhaid atá comhoiriúnach "
+"le\n"
+"                              haon phatrún i gCOMHAD\n"
+"      --exclude-dir=PATRÚN  ná déan cuardach i gcomhadlanna comhoiriúnacha.\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match ná taispeáin ach ainmneacha comhaid GAN\n"
+"                              teaghrán comhoiriúnach\n"
+"  -l, --files-with-matches  ná taispeáin ach ainmneacha comhaid LE\n"
+"                              teaghrán comhoiriúnach\n"
+"  -c, --count               ná taispeáin ach líon na dteaghrán "
+"comhoiriúnach\n"
+"                              i ngach comhad\n"
+"  -T, --initial-tab         Ailínigh na táib (más gá)\n"
+"  -Z, --null                priontáil beart '0' i ndiaidh ainm an chomhaid\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Rialú comhthéacs:\n"
+"  -B, --before-context=UIMH taispeáin UIMH líne de chomhthéacs tosaigh\n"
+"  -A, --after-context=UIMH  taispeáin UIMH líne de chomhthéacs deiridh\n"
+"  -C, --context=UIMHIR      taispeáin UIMHIR líne de chomhthéacs\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -UIMHIR                   ar comhbhrí le --context=UIMHIR\n"
+"      --color[=CATHAIN],\n"
+"      --colour[=CATHAIN]    aibhsigh na teaghráin chomhoiriúnacha;\n"
+"                            CATHAIN = 'always', 'never' nó 'auto'\n"
+"  -U, --binary              ná scrios carachtair CR (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Más é '-' an COMHAD, léigh ón ionchur caighdeánach. Gan COMHAD ar bith,\n"
+"léigh . má tá an rogha -r ann, agus - mura bhfuil. Má tá níos lú ná dhá\n"
+"chomhad ann, úsáid '-h'. Stádas scortha: 0 má roghnaíodh líne ar bith,\n"
+"1 murar roghnaíodh, agus 2 má tharlaíonn earráid ar bith gan rogha -q.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "sonraíodh patrúin chontrártha"
+
+#: src/grep.c:2101
+#, fuzzy
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Tiomsaíodh an clár dénártha seo le --disable-perl-regexp agus gan tacaíocht "
+"do rogha -P"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "meaitseálaí neamhbhailí %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "modh anaithnid gléasanna"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "uasmhéid neamhbhailí"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "cineál anaithnid de chomhad dénártha"
+
+#: src/grep.c:2829
+#, fuzzy
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"agus daoine eile, féach ar <http://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "níorbh fhéidir cuimhne a dháil le haghaidh na cruaiche PCRE JIT"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "Tacaíonn an rogha -P logchaighdeáin aonbhearta agus UTF-8 amháin"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "Ní thacaíonn rogha -P ach le patrún amháin"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "earráid inmheánach (ní tharlaíonn seo riamh)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "sáraíodh uasfhad líne PCRE"
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "cuimhne ídithe"
+
+#: src/pcresearch.c:310
+#, fuzzy, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "cruach PCRE JIT líonta"
+
+#: src/pcresearch.c:315
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "sáraíodh teorainn PCRE ar chúlú"
+
+#: src/pcresearch.c:319
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "sáraíodh teorainn PCRE ar chúlú"
+
+#: src/pcresearch.c:327
+#, fuzzy, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "earráid inmheánach PCRE: %d"
+
+#, c-format
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "rabhadh: ní mholtar GREP_OPTIONS a úsáid a thuilleadh; bain úsáid as "
+#~ "ailias nó as script"
+
+#, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "rabhadh: %s: %s"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "argóint neamhbhailí %s%s '%s'"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "iarmhír neamhbhailí tar éis argóint %s%s '%s'"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "argóint %s%s rómhór: '%s'"
+
+#, fuzzy
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "Leathanach baile %s: <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "internal error"
+#~ msgstr "earráid inmheánach"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: ní cheadaítear argóint i ndiaidh rogha '--%s'\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: rogha anaithnid '--%s'\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: tá an rogha '-W %s' débhríoch\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: ní cheadaítear argóint i ndiaidh rogha '-W %s'\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: tá argóint de dhíth i ndiaidh rogha '-W %s'\n"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr ""
+#~ "Is slonn ionadaíochta bunúsach (BRE) é PATRÚN, de réir réamhshocraithe.\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "'egrep' = 'grep -E', agus 'fgrep' = 'grep -F'.\n"
+#~ "Tá na horduithe 'egrep' agus 'fgrep' imithe i léig.\n"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "Tá líon na hathráite neamhiomlán"
+
+# more precisely, "the string indicating the repeat count" is malformed -- KPS
+#~ msgid "malformed repeat count"
+#~ msgstr "Tá líon na hathráite míchumtha"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "Is slonn ionadaíochta feabhsaithe (ERE) é PATRÚN.\n"
+
+#~ msgid "Invocation as `egrep' is deprecated; use `grep -E' instead.\n"
+#~ msgstr "Tá an t-ordú `egrep' imithe i léig; úsáid `grep -E' ina ionad.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "Is tacar teaghrán é PATRÚN, scartha le línte nua.\n"
+
+#~ msgid "Invocation as `fgrep' is deprecated; use `grep -F' instead.\n"
+#~ msgstr "Tá an t-ordú `fgrep' imithe i léig; úsáid `grep -F' ina ionad.\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "theip ar lseek"
+
+#~ msgid "writing output"
+#~ msgstr "aschur á scríobh"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Leathanach baile GNU Grep: <%s>\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "Ní féidir le %s ach comhréir phatrúin %s a úsáid"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "I GREP_COLORS=\"%s\", tá luach (\"=...\") de dhíth i ndiaidh acmhainn \"%s"
+#~ "\"; rinneadh neamhaird de."
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "I GREP_COLORS=\"%s\", is den chineál boole é an acmhainn \"%s\" agus ní "
+#~ "cheadaítear luach (\"=%s\") ina dhiaidh; rinneadh neamhaird de."
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "I GREP_COLORS=\"%s\", an acmhainn \"%s\": %s"
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "Scoireadh ó phróiseáil teaghrán míchumtha GREP_COLORS=\"%s\" ag an "
+#~ "bhfotheaghrán atá fágtha: \"%s\""
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE;\n"
+#~ "                            TYPE is `binary', `text', or `without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories;\n"
+#~ "                            ACTION is `read', `recurse', or `skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+#~ "                            ACTION is `read' or `skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=FILE_PATTERN  search only files that match FILE_PATTERN\n"
+#~ "      --exclude=FILE_PATTERN  skip files and directories matching "
+#~ "FILE_PATTERN\n"
+#~ "      --exclude-from=FILE   skip files matching any file pattern from "
+#~ "FILE\n"
+#~ "      --exclude-dir=PATTERN directories that match PATTERN will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match print only names of FILEs containing no "
+#~ "match\n"
+#~ "  -l, --files-with-matches  print only names of FILEs containing matches\n"
+#~ "  -c, --count               print only a count of matching lines per "
+#~ "FILE\n"
+#~ "  -T, --initial-tab         make tabs line up (if needed)\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Rialú aschurtha:\n"
+#~ "  -m, --max-count=UIMHIR    stop i ndiaidh UIMHIR líne comhoiriúnach\n"
+#~ "  -b, --byte-offset         taispeáin an fritháireamh birt san aschur\n"
+#~ "  -n, --line-number         taispeáin líne-uimhreacha san aschur\n"
+#~ "      --line-buffered       déan sruthlú an aschuir i ndiaidh gach líne\n"
+#~ "  -H, --with-filename       taispeáin ainm comhaid le línte "
+#~ "comhoiriúnacha\n"
+#~ "  -h, --no-filename         ná taispeáin ainmneacha comhad\n"
+#~ "      --label=LIPÉAD        úsáid LIPÉAD mar ainm ar an ngnáth-ionchur\n"
+#~ "  -o, --only-matching       ná taispeáin ach an teaghrán comhoiriúnach\n"
+#~ "  -q, --quiet, --silent     múch an gnáth-aschur\n"
+#~ "      --binary-files=CINE�L glac le comhaid dhénártha mar CINE�L;\n"
+#~ "                            CINE�L = 'binary', 'text', nó 'without-"
+#~ "match'\n"
+#~ "  -a, --text                ar comhbhrí le '--binary-files=text'\n"
+#~ "  -I                        ar comhbhrí le '--binary-files=without-"
+#~ "match'\n"
+#~ "  -d, --directories=MODH    modh oibre le haghaidh comhadlanna\n"
+#~ "                            MODH = 'read', 'recurse', nó 'skip'\n"
+#~ "  -D, --devices=MODH        modh oibre le haghaidh gléasanna, FIFOnna,\n"
+#~ "                              agus soicéid; MODH = 'read' nó 'skip'\n"
+#~ "  -R, -r, --recursive       ar comhbhrí le '--directories=recurse'\n"
+#~ "      --include=PATRÚN      déan cuardach i gcomhaid chomhoiriúnacha "
+#~ "amháin\n"
+#~ "      --exclude=PATRÚN      ná déan cuardach i gcomhaid chomhoiriúnacha\n"
+#~ "      --exclude-from=COMHAD ná déan cuardach i gcomhaid atá comhoiriúnach "
+#~ "le\n"
+#~ "                              haon phatrún i gCOMHAD\n"
+#~ "      --exclude-dir=PATRÚN  ná déan cuardach i gcomhadlanna "
+#~ "comhoiriúnacha.\n"
+#~ "  -L, --files-without-match ná taispeáin ach ainmneacha comhaid GAN\n"
+#~ "                              teaghrán comhoiriúnach\n"
+#~ "  -l, --files-with-matches  ná taispeáin ach ainmneacha comhaid LE\n"
+#~ "                              teaghrán comhoiriúnach\n"
+#~ "  -c, --count               ná taispeáin ach líon na teaghráin "
+#~ "chomhoiriúnacha\n"
+#~ "                              atá i ngach comhad\n"
+#~ "  -T, --initial-tab         Ailínigh na táib (más gá)\n"
+#~ "  -Z, --null                priontáil beart '0' i ndiaidh an ainm "
+#~ "comhaid\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "modh anaithnid comhadlann"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Tá na roghanna -P agus -z neamh-chomhoiriúnach le chéile"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: rogha neamhcheadaithe -- %c\n"
+
+#~ msgid "Copyright (C) 2008 Free Software Foundation, Inc.\n"
+#~ msgstr "Copyright © 2008 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions.  There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Is saorbhogearra an ríomhchlár seo; féach ar an mbunchód le haghaidh\n"
+#~ "coinníollacha cóipeála.  Níl baránta ar bith ann; go fiú níl baránta ann\n"
+#~ "d'IND�OLTACHT nó FEILIÚNACHT D'FHEIDHM AR LEITH.\n"
+
+#~ msgid "out of memory"
+#~ msgstr "cuimhne ídithe"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Úsáid: %s [ROGHA]... PATRÚN [COMHAD] ...\n"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
diff --git a/src/grep/po/gl.gmo b/src/grep/po/gl.gmo
new file mode 100644
index 0000000..e3151db
--- /dev/null
+++ b/src/grep/po/gl.gmo
diff --git a/src/grep/po/gl.po b/src/grep/po/gl.po
new file mode 100644
index 0000000..5fbe805
--- /dev/null
+++ b/src/grep/po/gl.po
@@ -0,0 +1,1000 @@
+# Galician Translation of grep
+# Copyright (C) 2001 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Jacobo Tarrío Barreiro <jtarrio@iname.com>, 2001.
+# Francisco Diéguez <frandieguez@ubuntu.com>, 2012.
+# Leandro Regueiro <leandro.regueiro@gmail.com>, 2012.
+# Antón Méixome <meixome@certima.net>, 2018.
+# Francisco Javier Tsao Santín <tsao@members.fsf.org>, 2020.
+# Proxecto Trasno - Adaptación do software libre á lingua galega:  Se desexas
+# colaborar connosco, podes atopar máis información en <http://trasno.gal>
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.5.16\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2020-11-09 12:44+0100\n"
+"Last-Translator: Francisco Javier Tsao Santín <tsao@members.fsf.org>\n"
+"Language-Team: Galician <proxecto@trasno.gal>\n"
+"Language: gl\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"X-Generator: Virtaal 0.7.1\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "o argumento %s para %s é incorrecto"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "o argumento %s para %s é ambiguo"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Os argumentos correctos son:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "erro de programa"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "desbordamento de pila"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "erro de escritura"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ desemparellado"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "clase de caracteres incorrecta"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "a sintaxe da clase de caracteres é [[:space:]], non [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "secuencia de escape \\ sen rematar"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "contido incorrecto de \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "expresión regular demasiado grande"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( desemparellado"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "no se especificou ningunha sintaxe"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") desemparellado"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Erro do sistema descoñecido"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: a opción '%s%s' é ambigua\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: a opción '%s%s' é ambigüa; posibilidades:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: non se recoñece a opción '%s%s'\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: a opción '%s%s' non admite ningún argumento\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: a opción '%s%s' require un argumento\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: a opción -- '%c' non é correcta\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: a opción require un argumento -- '%c'\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "memoria esgotada"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "non se puido rexistrar o cartafol de traballo activo"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "produciuse un fallo ao volver ao cartafol de traballo inicial"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "produciuse un fallo ao configurar o modo do descritor texto/binario"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "«"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "»"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Correcto"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "No hai ningunha coincidencia"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Expresión regular incorrecta"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Carácter de unión incorrecto"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Nome de clase de caracteres incorrecto"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Barra invertida ao final"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Referencia cara atrás incorrecta"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "[, [^, [:, [., ou [= desemparellado"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( ou \\( desemparellado"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ desemparellado"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Contido incorrecto \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Final de intervalo incorrecto"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Memoria esgotada"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "A expresión regular precedente é incorrecta"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Final prematuro da expresión regular"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "A expresión regular é demasiado grande"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") ou \\) desemparellado"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "No hai ningunha expresión regular anterior"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Empaquetado por %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Empaquetado por %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Licenza GPLv3+: GPL de GNU versión 3 ou posterior <%s>.\n"
+"Isto é software libre: vostede é libre de modificalo e redistribuílo.\n"
+"Non hai NINGUNHA GARANT�A, ata onde o permite a lei.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Escrito por %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Escrito por %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Escrito por %s, %s, e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, e outros.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Comunicar erros no programa en: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Comunicar %s erros de programa en: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Páxina de web de %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Axuda xeral sobre o uso de software de GNU: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(entrada estándar)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "argumento de lonxitude do contexto incorrecto"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "a entrada é longa de máis para facer a conta"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: coincide o ficheiro binario"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: aviso: ciclo de cartafoles recursivo"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: o ficheiro de entrada tamén é o de saída"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Uso: %s [OPCIÓN]... PATRÓNS [FICHEIRO]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Consulte con '%s --help' para máis información.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Busca PATRÓNS en cada FICHERO.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Exemplo: %s -i 'hello world' menu.h main.c\n"
+"\n"
+"Selección de patróns e interpretación:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     O PATRÓNS son expresións regulares estendidas\n"
+"  -F, --fixed-strings       O PATRÓNS son conxuntos de cadeas\n"
+"  -G, --basic-regexp        O PATRÓNS son expresións regulares básicas\n"
+"  -P, --perl-regexp         O PATRÓNS son expresións regulares en Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=PATRÓN       utiliza PATRÓNS para atopar coincidencias\n"
+"  -f, --file=FICHEIRO       obtén PATRÓNS de FICHEIRO\n"
+"  -i, --ignore-case         considera iguais as maiúsculas e as minúsculas "
+"en patróns e datos\n"
+"      --no-ignore-case      non considera iguais as maiúsculas e as "
+"minúsculas (por defecto)\n"
+"  -w, --word-regexp         obriga a que coincida só con palabras completas\n"
+"  -x, --line-regexp         obriga a que coincida só con liñas completas\n"
+"  -z, --null-data           unha liña de datos termina nun byte 0, non nun "
+"carácter de nova liña\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Variadas:\n"
+"  -s, --no-messages         suprime as mensaxes de erro\n"
+"  -v, --invert-match        selecciona as liñas que non coinciden\n"
+"  -V, --version             amosa a versión e finaliza\n"
+"      --help                amosa esta axuda e finaliza\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Control da saída como resultado:\n"
+"  -m, --max-count=NUM       detense despois do NUM de liñas seleccionadas\n"
+"  -b, --byte-offset         amosa o desprazamento en bytes xunto coas liñas "
+"de saí­da\n"
+"  -n, --line-number         amosa o número de liña xunto coas liñas de saí­"
+"da\n"
+"      --line-buffered       descarga o resultado para cada liña\n"
+"  -H, --with-filename       amosa o nome do ficheiro de cada coincidencia\n"
+"  -h, --no-filename         suprime os nomes dos ficheiros como prefixo no "
+"resultado\n"
+"      --label=ETIQUETA      utiliza ETIQUETA como prefixo estándar do nome "
+"de ficheiro\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       amosa só partes non baleiras de liñas que "
+"coinciden\n"
+"  -q, --quiet, --silent     suprime todo o resultado normal\n"
+"      --binary-files=TIPO   supón que os ficheros binarios son de TIPO;\n"
+"                            TIPO é 'binary', 'text', ou 'without-match'\n"
+"  -a, --text                equivalente a --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        equivalente a --binary-files=sen-coincidencia\n"
+"  -d, --directories=ACCIÓN  especifica como manexar os cartafoles\n"
+"                            ACCIÓN pode ser 'read', 'recurse', ou 'skip'\n"
+"  -D, --devices=ACCIÓN      especifica como manexar dispositivos, FIFO e\n"
+"                            «sockets», pode ser 'read' ou 'skip'\n"
+"  -r, --recursive           equivalente a --directories=recurse\n"
+"  -R, --dereference-recursive  equivalente, pero seguindo tódolas ligazóns "
+"simbólicas\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=PATRÓN_FICHEIRO  busca só os ficheiros que coinciden con "
+"PATRÓN_FICHEIRO\n"
+"      --exclude=PATRÓN_FICHEIRO  omítense os ficheiros e cartafoles que "
+"coinciden con PATRÓN_FICHEIRO\n"
+"      --exclude-from=FICHEIRO    omítense os ficheiros que coinciden con "
+"calquera patrón de ficheiro de FICHEIRO\n"
+"      --exclude-dir=PATRÓN       omítense os cartafoles que coinciden con "
+"PATRÓN\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match amosa só os nomes dos FICHEIROS que no conteñen "
+"ningunha coincidencia\n"
+"  -l, --files-with-matches  amosa só os nomes de FICHEIROS que conteñen "
+"algunha coincidencia\n"
+"  -c, --count               amosa só resultado de liñas que coinciden de "
+"cada FICHEIRO\n"
+"  -Z, --null                imprime un byte 0 despois do nome do FICHEIRO\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Control do contexto:\n"
+"  -B, --before-context=NÚM  amosa o NÚM de liñas de contexto anterior\n"
+"  -A, --after-context=NÚM   amosa o NÚM de liñas de contexto posterior\n"
+"  -C, --context=NÚM         amosa o NÚM liñas de contexto\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      o mesmo que --context=NUM\n"
+"      --color[=CANDO],\n"
+"      --colour[=CANDO]      distingue con marcadores a cadea que encaixa;\n"
+"                            CANDO pode ser 'always', 'never', ou 'auto'.\n"
+"  -U, --binary              non elimina os caracteres CR de retorno de liña "
+"(MSDOS/Windows)\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Cando o FICHEIRO é '-', le a entrada estándard. De non especificar FICHEIRO, "
+"le '.'\n"
+"se é recursivo, doutra maneira '-'. De se dar menos de dous FICHEIROS, "
+"suponse -h.\n"
+"O estado de saída é 0 se algunha liña é elixida, 1 se non as hai;\n"
+"de se producir algún  erro e asemade non se especificou -q,\n"
+"o estado de saída é 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "especificáronse expresións conflitivas"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"A coincidencia compatible con Perl non está soportada nun compilado --"
+"disable-perl-regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "a expresión %s non é correcta"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "método de dispositivos descoñecido"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "contador máximo incorrecto"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "tipo binary-files descoñecido"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Escrito por Mike Haertel e outros, véxase\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "ao tentar dispoñer de memoria produciuse un erro para a pila PCRE JIT"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P admite só locales unibyte e UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "a opción -P admite só un patrón"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "erro interno (non debería ocorrer nunca)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "excedeuse o tamaño límite das liñas PCRE"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: memoria esgotada"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: esgotouse a pila PCRE JIT"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: excedeuse o límite de volta atrás das PCREs"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: excedeuse o límite de recursividade das PCREs"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: erro interno de PCRE: %d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr "aviso: GREP_OPTIONS está obsoleto; utilice un alias ou un script"
+
+#~ msgid "%s home page: <http://www.gnu.org/software/%s/>\n"
+#~ msgstr "Páxina de web de %s: <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "argumento %s%s incorrect '%s'"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "sufixo incorrecto no %s%s argumento «%s»"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s argumento «%s» demasiado grande"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "atención: %s: %s"
+
+#~ msgid "internal error"
+#~ msgstr "erro interno"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: a opción '--%s' non admite ningíºn argumento\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: opción non recoñecida '--%s'\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: a opción '-W %s' non admite ningíºn argumento\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: a opción '-W %s' require un argumento\n"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "contador de repetición sen rematar"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "contador de repetición erróneo"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "PATRÓN é una expresión regular estendida (ERE).\n"
+
+#~ msgid "Invocation as `egrep' is deprecated; use `grep -E' instead.\n"
+#~ msgstr ""
+#~ "A invocación como `egrep' está obsoleta; utilice `grep -E' no seu lugar.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "PATRÓN é un conxunto de cadenas fixas separadas por nova liña\n"
+
+#~ msgid "Invocation as `fgrep' is deprecated; use `grep -F' instead.\n"
+#~ msgstr ""
+#~ "A invocación como `fgrep' está obsoleta; utilice `grep -F' no seu lugar.\n"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "PATRÓN é, por omisión, unha expresión regular básica (BRE).\n"
+
+#~ msgid ""
+#~ "`egrep' means `grep -E'.  `fgrep' means `grep -F'.\n"
+#~ "Direct invocation as either `egrep' or `fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "`egrep' significa `grep -E'.  `fgrep' significa `grep -F'.\n"
+#~ "A invocación directa como `egrep' ou `fgrep' está obsoleta.\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "fallou a chamada ao sistema `lskeek'"
+
+#~ msgid "writing output"
+#~ msgstr "escribiendo o resultado"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Páxina web de GNU grep: <%s>\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s só puede usar a sintaxe de patrón %s"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "en GREP_COLORS=\"%s\", a capacidad \"%s\" necesita un valor (\"=...\"); "
+#~ "omitido."
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "en GREP_COLORS=\"%s\", a capacidad \"%s\" é booleana e non pode tener un "
+#~ "valor (\"=%s\"); omitido."
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "en GREP_COLORS=\"%s\", a capacidade \"%s\" %s."
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "o proceso do erróneo GREP_COLORS=\"%s\" detí­vose na subcadena \"%s\"."
+
+#~ msgid "out of memory"
+#~ msgstr "memoria esgotada"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Emprego: %s [OPCIN]... PATRN [FICHEIRO] ...\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE\n"
+#~ "                            TYPE is 'binary', 'text', or 'without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories\n"
+#~ "                            ACTION is 'read', 'recurse', or 'skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets\n"
+#~ "                            ACTION is 'read' or 'skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=PATTERN     files that match PATTERN will be examined\n"
+#~ "      --exclude=PATTERN     files that match PATTERN will be skipped.\n"
+#~ "      --exclude-from=FILE   files that match PATTERN in FILE will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match only print FILE names containing no match\n"
+#~ "  -l, --files-with-matches  only print FILE names containing matches\n"
+#~ "  -c, --count               only print a count of matching lines per "
+#~ "FILE\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Control de sada:\n"
+#~ "  -m, --max-count=NM       parar tras NM aparicins\n"
+#~ "  -b, --byte-offset         amosa o desprazamento do byte coas lias de "
+#~ "sada\n"
+#~ "  -n, --line-number         amosa o numero de lia coas lias de sada\n"
+#~ "      --line-buffered       baleira-lo buffer de sada con cada lia\n"
+#~ "  -H, --with-filename       amosa o nome do ficheiro de cada aparicin\n"
+#~ "  -h, --no-filename         suprime o prefixo de nome de ficheiro na "
+#~ "sada\n"
+#~ "      --label=ETIQUETA      amosa-la ETIQUETA coma o nome da entrada "
+#~ "estndar\n"
+#~ "  -o, --only-matching       amosar s a parte da lia que encaixa co PATRN\n"
+#~ "  -q, --quiet, --silent     suprime toda a sada normal\n"
+#~ "      --binary-files=TIPO   supoer que os ficheiros binarios son TIPO\n"
+#~ "                            TIPO  'binary', 'text' ou 'without-match'\n"
+#~ "                            ('binario', 'texto', ou 'sen aparicins')\n"
+#~ "  -a, --text                equivalente a --binary-files=text\n"
+#~ "  -I                        equivalente a --binary-files=without-match\n"
+#~ "  -d, --directories=ACCION  como trata-los directorios\n"
+#~ "                            ACCION  'read', 'recurse', ou 'skip'.\n"
+#~ "                            ('ler', 'ascender recursivamente', ou "
+#~ "'omitir')\n"
+#~ "  -D, --devices=ACCIN      como trata-los dispositivos, FIFOs e sockets\n"
+#~ "                            ACCIN  'read' ou 'skip' ('ler' ou 'omitir')\n"
+#~ "  -R, -r, --recursive       equivalente a --directories=recurse.\n"
+#~ "      --include=PATRN      hanse examina-los ficheiros que encaixen no "
+#~ "PATRN\n"
+#~ "      --exclude=PATRN      hanse omiti-los ficheiros que encaixen no "
+#~ "PATRN\n"
+#~ "      --exclude-from=FICH   hanse omiti-los ficheiros que encaixen nos "
+#~ "patrns\n"
+#~ "                               armacenados no FICHeiro\n"
+#~ "  -L, --files-without-match s amosa os FICHEIROS sen aparicins\n"
+#~ "  -l, --files-with-matches  s amosa os FICHEIROS con aparicins\n"
+#~ "  -c, --count               s amosa o nm. de lias coincidentes por "
+#~ "FICHEIRO\n"
+#~ "  -Z, --null                producir un byte 0 tralo nome do FICHEIRO\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Report bugs to <bug-gnu-utils@gnu.org>.\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Informe dos erros no programa a <bug-gnu-utils@gnu.org>.\n"
+#~ "Informe dos erros na traduccin a <proxecto@trasno.net>.\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "mtodo de directorios descoecido"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+#~ msgstr ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions. There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Isto  software libre; vexa o cdigo funte polas condicins de copia. NON "
+#~ "HAI\n"
+#~ "garanta; nin sequera de COMERCIABILIDADE ou APTITUDE PARA UN FIN "
+#~ "PARTICULAR.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "As opcins -P e -z non se poden combinar"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: opcin non permitida -- %c\n"
+
+#~ msgid "option %s"
+#~ msgstr "opcin %s"
+
+#~ msgid " with arg %s"
+#~ msgstr " con arg %s"
+
+#~ msgid "digits occur in two different argv-elements.\n"
+#~ msgstr "dixitos aparecen en dous argv-elementos diferentes.\n"
+
+#~ msgid "option %c\n"
+#~ msgstr "opcin %c\n"
+
+#~ msgid "option a\n"
+#~ msgstr "opcin a\n"
+
+#~ msgid "option b\n"
+#~ msgstr "opcin b\n"
+
+#~ msgid "option c with value `%s'\n"
+#~ msgstr "opcin c con valor `%s'\n"
+
+#~ msgid "option d with value `%s'\n"
+#~ msgstr "opcin d con valor `%s'\n"
+
+#~ msgid "?? getopt returned character code 0%o ??\n"
+#~ msgstr "?? getopt devolveu o cdigo de caracter 0%o ??\n"
+
+#~ msgid "non-option ARGV-elements: "
+#~ msgstr "ARGV-elementos no-opcin: "
+
+#~ msgid "you may specify only one of -E, -F, or -G"
+#~ msgstr "Debes especificar s un de -E, -F, ou -G"
+
+#~ msgid "memory exhausted\n"
+#~ msgstr "memoria esgotada\n"
diff --git a/src/grep/po/grep.pot b/src/grep/po/grep.pot
new file mode 100644
index 0000000..8b04c87
--- /dev/null
+++ b/src/grep/po/grep.pot
@@ -0,0 +1,636 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR Free Software Foundation, Inc.
+# This file is distributed under the same license as the GNU grep package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU grep 3.7\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr ""
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr ""
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr ""
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr ""
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr ""
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr ""
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr ""
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr ""
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr ""
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr ""
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ""
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr ""
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr ""
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr ""
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr ""
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr ""
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr ""
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr ""
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr ""
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr ""
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr ""
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr ""
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr ""
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr ""
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr ""
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr ""
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr ""
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ""
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr ""
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr ""
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr ""
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr ""
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr ""
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr ""
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr ""
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr ""
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr ""
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr ""
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr ""
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr ""
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr ""
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr ""
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr ""
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr ""
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr ""
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr ""
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr ""
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr ""
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr ""
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr ""
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr ""
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr ""
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr ""
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr ""
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr ""
diff --git a/src/grep/po/he.gmo b/src/grep/po/he.gmo
new file mode 100644
index 0000000..d39a14d
--- /dev/null
+++ b/src/grep/po/he.gmo
diff --git a/src/grep/po/he.po b/src/grep/po/he.po
new file mode 100644
index 0000000..5484e88
--- /dev/null
+++ b/src/grep/po/he.po
@@ -0,0 +1,813 @@
+# Hebrew messages for GNU Grep
+# Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+# Eli Zaretskii <eliz@gnu.org>, 2005.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 2.5.1a\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2005-03-04 14:55+0200\n"
+"Last-Translator: Eli Zaretskii <eliz@gnu.org>\n"
+"Language-Team: Hebrew <eliz@gnu.org>\n"
+"Language: he\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr ""
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr ""
+
+#: lib/dfa.c:896
+#, fuzzy
+msgid "unbalanced ["
+msgstr "âåæ-ïá åì ïéàù ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr ""
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr ""
+
+#: lib/dfa.c:1210
+#, fuzzy
+msgid "unfinished \\ escape"
+msgstr "äøåîâ-éúìá \\ äø÷á úøãñ"
+
+#: lib/dfa.c:1371
+#, fuzzy
+msgid "invalid content of \\{\\}"
+msgstr "éåâù éáøéî øôñî"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr ""
+
+#: lib/dfa.c:1858
+#, fuzzy
+msgid "unbalanced ("
+msgstr "âåæ-ïá åì ïéàù ("
+
+#: lib/dfa.c:1975
+#, fuzzy
+msgid "no syntax specified"
+msgstr "øéáçú úøãâä ïéà"
+
+#: lib/dfa.c:1986
+#, fuzzy
+msgid "unbalanced )"
+msgstr "âåæ-ïá åì ïéàù )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "úøëåî-éúìá úëøòî úì÷ú"
+
+#: lib/getopt.c:278
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s úéðëú øåáò éòîùî-ãç åðéà `%s' ïééôàî\n"
+
+#: lib/getopt.c:284
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s úéðëú øåáò éòîùî-ãç åðéà `%s' ïééôàî\n"
+
+#: lib/getopt.c:319
+#, fuzzy, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s úéðëú øåáò `%c%s' øëåî-éúìá ïééôàî\n"
+
+#: lib/getopt.c:345
+#, fuzzy, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s úéðëú øåáò èðîåâøà ìá÷î åðéà `%c%s' ïééôàî\n"
+
+#: lib/getopt.c:360
+#, fuzzy, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s úéðëú øåáò èðîåâøà áééçî `%s' ïééôàî\n"
+
+#: lib/getopt.c:621
+#, fuzzy, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s úéðëú øåáò éåâù ïééôàî -- %c\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, fuzzy, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: èðîåâøà áééçî ïééôàî -- %c\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "ïåøëæä øîâð"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr ""
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr ""
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "`"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr ""
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr ""
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "ïåøëæä øîâð"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ""
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr ""
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr ""
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr ""
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr ""
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+".<bug-grep@gnu.org> úáåúëì äì÷ú éçååéã çåìùì àð\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr ""
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(éð÷ú èì÷ õåøò)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "øù÷ää èñ÷è êøåà ìù äéåâù äøãâä"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "øåôñì éãëî ìåãâ èì÷"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "äîéàúî úæåøçî ìéëî %s éøàðéá õáå÷\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "äé÷éúá äéñøå÷ø úàìåì"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr ""
+
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "%s [íéðééôàî]... PATTERN [õáå÷]  :ùåîéùä ïôåà\n"
+
+#: src/grep.c:1963
+#, fuzzy, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr ".øúåé áø òãéî úâöäì `%s --help' äñð\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr ""
+
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"                .éð÷ú èì÷á åà ,åðéåöù íéöá÷äî ãçà ìëá úéðáúì úåîàúä ùôç\n"
+"                     %s -i 'hello world' menu.h main.c :àîâåã\n"
+"\n"
+"                                        :íééøìåâøä íééèéáä âååéñå äøéçá\n"
+
+#: src/grep.c:1975
+#, fuzzy, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"                  áçøåî éøìåâø éåèéá àåä PATTERN   -E, --extended-regexp\n"
+"     newline é\"ò úåãøôåîä úåæåøçîî áëøåî PATTERN   -F, --fixed-strings\n"
+"                  éñéñá éøìåâø éåèéá àåä PATTERN   -E, --extended-regexp\n"
+"            Perl ïåðâñá éøìåâø éåèéá àåä PATTERN   -P, --perl-regexp\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"               PATTERN-á äðéä éøìåâø éåèéá úéðáú   -e, --regexp=PATTERN\n"
+"            FILE õáå÷ êåúî PATTERN úéðáúä úà àø÷   -f, --file=FILE\n"
+"          úåðè÷å úåìåãâ úåéúåà ïéá íéìãáäî íìòúä   -i, --ignore-case\n"
+"            úåîìù íéìîì ÷øå êà íéàúäì PATTERN ìò   -w, --word-regexp\n"
+"           úåîìù úåøåùì ÷øå êà íéàúäì PATTERN ìò   -x, --line-regexp\n"
+"           newline-á àì ,0-úéáá úîééúñî èì÷ úøåù   -z, --null-data\n"
+
+#: src/grep.c:1989
+#, fuzzy, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"                                                           :íéôñåð íéðééôàî\n"
+"                             äì÷ú úåàãåä âéöú ìà   -s, --no-messages\n"
+"               PATTERN-ì úåîéàúî ïðéàù úåøåù âöä   -v, --invert-match\n"
+"                   àöå úéðëåúä úñøéâ ìò òãéî âöä   -V, --version\n"
+"                     úéðëúäî àöå äæ äøæò êñî âöä       --help\n"
+"    ïåøëæì úåøéùé èì÷ éöá÷ éåôéîá ùîúùä ,øùôà íà       --mmap\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"\n"
+"                                                             :øù÷ä ìò äèéìù\n"
+"         úîàåúä äøåùä éðôì øù÷ä ìù úåøåù NUM âöä   -B, --before-context=NUM\n"
+"         úîàåúä äøåùä éøçà øù÷ä ìù úåøåù NUM âöä   -A, --after-context=NUM\n"
+"   úîàåúä äøåùä éøçàå éðôì øù÷ä ìù úåøåù NUM âöä   -C, --context=NUM\n"
+"                        --context=NUM-ì êøò-äååù   -NUM\n"
+"                                                       --color[=WHEN],\n"
+"             úîàåúä úæåøçîä úèìáäì òáö éðîéñ âöä       --colour[=WHEN]\n"
+"    `auto' åà ,`never' ,`always' úåéäì ìåëé WHEN\n"
+"                (MSDOS) äøåù óåñá CR éåú ÷ìñú ìà   -U, --binary\n"
+" (MSDOS)  íéîéé÷ åéä àì CR éåú åìéàë íéèñéä çååã   -u, --unix-byte-offsets\n"
+"\n"
+"                        .`grep -F' åùåøô `fgrep' .`grep -E' åùåøô `egrep'\n"
+"            .éð÷ú èì÷ õåøòî àøå÷ ,- àåä õáå÷ä íù íà åà ,èì÷ õáå÷ ïåéö àìì\n"
+"                                     .-h òîúùî ,íéöá÷ éðùî úåçô íéðåúð íà\n"
+"       .úåì÷ú ìù äø÷îá 2 ,åàöîð àì íà 1 ,úåîàúä åàöîð íà 0 åðéä äàéöé ãå÷\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "äîàúää éâåñ ìù íéøúåñ íéðåéö"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+
+#: src/grep.c:2103
+#, fuzzy, c-format
+msgid "invalid matcher %s"
+msgstr "éåâù éáøéî øôñî"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "íéð÷úäá ìåôéèì úøëåî-éúìá úèéù"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "éåâù éáøéî øôñî"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "íééøàðéá íéöá÷á ìåôéèì úøëåî-éúìá úèéù"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr ""
+
+#: src/pcresearch.c:143
+#, fuzzy
+msgid "the -P option only supports a single pattern"
+msgstr "-P ïééôàîá äëéîú ïéà"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr ""
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr ""
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "ïåøëæä øîâð"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr ""
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr ""
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr ""
+
+#, fuzzy, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "%s %s :äøäæà\n"
+
+#, fuzzy
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s úéðëú øåáò èðîåâøà ìá÷î åðéà `--%s' ïééôàî\n"
+
+#, fuzzy
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s úéðëú øåáò `--%s' øëåî-éúìá ïééôàî\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s úéðëú øåáò éòîùî-ãç åðéà `-W %s' ïééôàî\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s úéðëú øåáò èðîåâøà ìá÷î åðéà `-W %s' ïééôàî\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s úéðëú øåáò èðîåâøà áééçî `%s' ïééôàî\n"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "äøåîâ-éúìá úåðùéä äðåî úøãâä"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "úåðùéä äðåî úøãâäá éåâù øéáçú"
+
+#~ msgid "out of memory"
+#~ msgstr "ïåøëæä øîâð"
+
+#~ msgid "writing output"
+#~ msgstr "(èìô úáéúë úòá äì÷ú)"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "%s [íéðééôàî]... PATTERN [õáå÷]  :ùåîéùä ïôåà\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE\n"
+#~ "                            TYPE is 'binary', 'text', or 'without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories\n"
+#~ "                            ACTION is 'read', 'recurse', or 'skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets\n"
+#~ "                            ACTION is 'read' or 'skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=PATTERN     files that match PATTERN will be examined\n"
+#~ "      --exclude=PATTERN     files that match PATTERN will be skipped.\n"
+#~ "      --exclude-from=FILE   files that match PATTERN in FILE will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match only print FILE names containing no match\n"
+#~ "  -l, --files-with-matches  only print FILE names containing matches\n"
+#~ "  -c, --count               only print a count of matching lines per "
+#~ "FILE\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "                                                              :èìô ìò "
+#~ "äèéìù\n"
+#~ "                úåîéàúî úåøåù NUM úâöä éøçà ÷ñôä   -m, --max-count=NUM\n"
+#~ "                   èìô úøåù ìë ìù íéúáá èñéä âöä   -b, --byte-offset\n"
+#~ "                      èìô úåøåù íò äøåù øôñî âöä   -n, --line-number\n"
+#~ "                      äøåù ìë øåáò èìô õöåç ï÷åø       --line-buffered\n"
+#~ "                   äîàúä ìë äàöîð åá õáå÷ íù âöä   -H, --with-filename\n"
+#~ "                         èìôá íéöá÷ úåîù âéöú ìà   -h, --no-filename\n"
+#~ "    õáå÷ä íùë LABEL âöä ,éð÷ú èì÷ õåøòî èì÷ øåáò       --label=LABEL\n"
+#~ "             úéðáúä úà íàåúä äøåùä ÷ìç úà ÷ø âöä   -o, --only-matching\n"
+#~ "                     íéìéâøä èìôä éâåñ ìë úà ìèá   -q, --quiet, --silent\n"
+#~ "                        íééøàðéá íéöá÷ ãáòì ãöéë       --binary-"
+#~ "files=HOW\n"
+#~ "'without-match' ,'text' ,'binary' úåéäì ìåëé HOW\n"
+#~ "                  --binary-files=text-ì êøò-äååù   -a, --text\n"
+#~ "         --binary-files=without-match-ì êøò-äååù   -I\n"
+#~ "                                úåé÷éú ãáòì ãöéë   -d, --directories=HOW\n"
+#~ "     'skip' åà ,'recurse' ,'read' úåéäì ìåëé HOW\n"
+#~ "                                íéð÷úä ãáòì ãöéë   -D, --devices=HOW\n"
+#~ "                 'skip' åà 'read' úåéäì ìåëé HOW\n"
+#~ "                --directories=recurse-ì êøò-äååù   -R, -r, --recursive\n"
+#~ "              PATTERN íéîàåú íäéúåîùù íéöá÷á ùôç       --include=PATTERN\n"
+#~ "            PATTERN íéîàåú íäéúåîùù íéöá÷ ìò âìã       --exclude=PATTERN\n"
+#~ "             PATTERN íéîàåúù FILE-î íéöá÷ ìò âìã       --exclude-"
+#~ "from=FILE\n"
+#~ "        úçà äîàúä óà äúéä àì íäáù íéöá÷ úåîù âöä   -L, --files-without-"
+#~ "match\n"
+#~ "            úåîàúä åéä íäá íéöá÷ä úåîù úà ÷ø âöä   -l, --files-with-"
+#~ "matches\n"
+#~ "          õáå÷ ìëá úåîàåúä úåøåùä øôñî úà ÷ø âöä   -c, --count\n"
+#~ "                          0 úéáá õáå÷ íù ìë íééñ   -Z, --null\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "úåé÷éúá ìåôéèì úøëåî-éúìá úèéù"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+#~ msgstr ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions. There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "áúë ïéà åæ äðëúì .øå÷î éöá÷á ïééò ,ä÷úòä úåéåëæì ;úéùôç äðëú äðéä åæ "
+#~ "äðëú\n"
+#~ "   .úîéåñî úéìëú åæéàì äîàúä åà úåøéçñ íùì òîúùîá-úåéøçà àì åìéôà ;"
+#~ "úåéøçà\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "äæ úà äæ íéøúåñ -z-å -P íéðééôàî"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: é÷åç-éúìá ïééôàî -- %c\n"
diff --git a/src/grep/po/hr.gmo b/src/grep/po/hr.gmo
new file mode 100644
index 0000000..b1106eb
--- /dev/null
+++ b/src/grep/po/hr.gmo
diff --git a/src/grep/po/hr.po b/src/grep/po/hr.po
new file mode 100644
index 0000000..c133fb0
--- /dev/null
+++ b/src/grep/po/hr.po
@@ -0,0 +1,976 @@
+# The Croatian translation of grep.
+# Copyright © 2016 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+#
+# bp, nekoliko noticija
+# ovo je ista verzija grep.po kao 2012. od TK. Samo je nekoliko rije�i
+# izmjenjeno. Dodani su novi msgid-ovi i popravljeni su fuzzies.
+# U sljedećoj verziji bit će više izmjena, nakon konzultacije s
+# lingvistima, i hrvatskim TP �lanovima.
+# Zahvaljujem prijašnjim prevoditeljima, jer je na njihovom trudu,
+# napravljena i ova dopuna.
+# Matej Vela <mvela@public.srce.hr>, 1999.
+# Hrvoje Niksic <hniksic@xemacs.org>, 2002.
+# Tomislav Krznar <tomislav.krznar@gmail.com>, 2012.
+# Božidar Putanec <bozidarp@yahoo.com>, 2016-2019, 2021.
+# bp, 2016-04-03.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep-3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-09 16:49+0200\n"
+"Last-Translator: Božidar Putanec <bozidarp@yahoo.com>\n"
+"Language-Team: Croatian <lokalizacija@linux.hr>\n"
+"Language: hr\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n"
+"%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);\n"
+"X-Generator: Poedit 3.0\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "nevaljani argument %s za %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "višezna�ni argument %s za %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Valjani argumenti su:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "greška u programu"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "prelijevanje st�ga"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "greška pri pisanju"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ nema odgovarajući par"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "nevaljana znakovna klasa"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "sintaksa znakovne klase je [[:space]], ne [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "nedovršena \\ escape sekvencija"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "nevaljani sadržaj u \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "preveliki regularni izraz"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( nema odgovarajući par"
+
+# „zadano“ je �esto „default“, pa radije „navedena“ ili „imenovana“
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "sintaksa nije navedena"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") nema odgovarajući par"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Nepoznata greška sustava"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: opcija „%s%s“ nije jednozna�na\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: opcija „%s%s“ nije jednozna�na; mogućnosti su:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: neprepoznata opcija „%s%s“\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: opcija „%s%s“ ne dopušta argument\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: opcija „%s%s“ zahtijeva argument\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: nevaljana opcija -- „%c“\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: opcija zahtijeva argument -- „%c“\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "nema dovoljno memorije"
+
+# lingvisti: trenutni > trenuta�ni
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "nije moguće registrirati trenutni radni direktorij"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "nije se uspjelo vratiti u po�etni radni direktorij"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "nije uspjelo postaviti deskriptor datoteke u tekst/binarni na�in"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "„"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "“"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Uspjeh"
+
+# no match: _REG_NOMATCH,		/* Didn't find a match (for regexec).  */
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Nema podudaranja"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Nevaljani regularni izraz"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Nevaljani znak za razvrstavanje"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Nevaljano ime za klasu znakova"
+
+# obrnuta > obratna
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Zaostala obratna kosa crta"
+
+# http://ihjj.hr/ referenca > referencija
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Nevaljana povratna referencija"
+
+# bp: fuzzy > popravljen
+# razmotri: nema para za [, [^, [:, [., ili [=
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "[, [^, [:, [., ili [= nema odgovarajući par"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( ili \\( nema odgovarajući par"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ nema odgovarajući par"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Nevaljani sadržaj u \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Nevaljani kraj raspona"
+
+# nedostaje memorije
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Nema dovoljno memorije"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Nevaljani prethodni regularni izraz"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Nedovršeni regularni izraz (preuranjeni završetak)"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Preveliki regularni izraz"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") ili \\) nema odgovarajući par"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Nema prethodnog regularnog izraza"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Spakirali %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Spakirao %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Licencija GPLv3+: GNU GPL ina�ica 3 ili novija <%s>.\n"
+"Ovo je slobodan softver: slobodno ga mijenjajte i dijelite.\n"
+"NEMA JAMSTVA do granica dopuštenih zakonom.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Napisao %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Napisali %s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Napisali %s, %s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Napisali %s, %s, %s\n"
+"i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Napisali %s, %s, %s,\n"
+"%s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Napisali %s, %s, %s,\n"
+"%s, %s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Napisali %s, %s, %s,\n"
+"%s, %s, %s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Napisali %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Napisali %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Napisali %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s i ostali.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"Greške u programu javite na <%s>.\n"
+"Primjedbe i pogreške u prijevodu javite na <lokalizacija@linux.hr>.\n"
+
+# prvi %s PACKAGE_PACKAGER,
+# drugi %s PACKAGE_PACKAGER_BUG_REPORTS
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Pogreške %s javite (na engleskom, LC_ALL=C) na <%s>\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Mrežna stranica za %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Općenita pomoć za korištenje GNU softvera: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standardni ulaz)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "nevaljani kontekst duljine argumenta"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "ulaz je prevelik da se prebroji"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: binarna datoteka se podudara"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s upozorenje: rekurzivna petlja direktorija"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: ulazna datoteka je ujedno i izlaz"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Uporaba: %s [OPCIJA]... UZORCI [DATOTEKA]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Pokušajte s „%s --help“ za pomoć i više informacija.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Traži UZORKE u svakoj DATOTECI.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Primjer: %s -i 'hello world' menu.h main.c\n"
+"UZORCI mogu sadržavati višestruke mustre odijeljene sa znakom za novi redak "
+"(\\n).\n"
+"\n"
+"Izbor uzorka i interpretacija:\n"
+
+# engl. „string“ hrvatske mogućnosti: biseri, zrna i sl. nanizani na nit; niska.
+# Prijedlog je string  > niska
+# vidi http://hjp.znanje.hr/index.php?show=search_by_id&id=eF1uXRg%3D
+# ili ostavimo string = string !
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     UZORAK je prošireni regularni izraz (ERE)\n"
+"  -F, --fixed-strings       UZORAK je skup stringova odvojenih\n"
+"                              znakom novog retka (\\n)\n"
+"  -G, --basic-regexp        UZORAK je osnovni regularni izraz (BRE)\n"
+"  -P, --perl-regexp         UZORAK je Perl regularni izraz\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=UZORCI       koristi UZORKE kao regularni izraz\n"
+"  -f, --file=DATOTEKA       preuzmi UZORKE iz DATOTEKE\n"
+"  -i, --ignore-case         zanemari veli�inu slova u uzorcima i podacima\n"
+"      --no-ignore-case      ne zanemaruje veli�inu slova (zadano)\n"
+"  -w, --word-regexp         UZORAK podudara samo cijele rije�i\n"
+"  -x, --line-regexp         UZORAK podudara samo cijele redove\n"
+"  -z, --null-data           redak završava s 0-bajtom, a ne sa znakom novog "
+"retka\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Razno:\n"
+"  -s, --no-messages         izostavi poruke o greškama\n"
+"  -v, --invert-match        odabere redove koji se ne podudaraju\n"
+"  -V, --version             informacije o ina�ici ovog programa\n"
+"      --help                ova pomoć\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Kontrola izlaza:\n"
+"  -m, --max-count=BROJ      prestane nakon BROJ nađenih redaka\n"
+"  -b, --byte-offset         uz retke ispiše i poziciju u bajtovima\n"
+"  -n, --line-number         uz retke ispiše broj retka\n"
+"      --line-buffered       izravno ispiše svaki izlazni redak\n"
+"  -H, --with-filename       uz retke ispiše ime datoteke za svako "
+"podudaranje\n"
+"  -h, --no-filename         bez ispisa imena datoteke za svako podudaranje\n"
+"      --label=OZNAKA        rabi OZNAKU kao ime datoteke na standardnom "
+"ulazu\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       prikaže samo dio retka koji se podudara\n"
+"  -q, --quiet, --silent     izostavi svaki normalni izlaz (ništa ne ispiše)\n"
+"      --binary-files=VRSTA  pretpostavi binarne datoteke tipa VRSTA;\n"
+"                              VRSTA je „binary“, „text“ ili „without-match“\n"
+"  -a, --text                isto kao --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        isto kao --binary-files=without-match\n"
+"  -d, --directories=AKCIJA  kako rukovati direktorijima;\n"
+"                              AKCIJA je „read“, „recurse“ ili „skip“\n"
+"  -D, --devices=AKCIJA      kako rukovati uređajima, FIFO uređajima\n"
+"                              i uti�nicama;  AKCIJA je „read“ ili „skip“\n"
+"  -r, --recursive           isto kao --directories=recurse\n"
+"  -R, --dereference-recursive  jednako, ali slijedi svaku simboli�ku vezu\n"
+
+# http://hjp.znanje.hr/index.php?show=kosi_oblici&id=eVxhWxI%3D
+# podudaran > koji je sukladan s �im, koji se poklapa s kim/�im
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB        pretraži samo datoteke koje se podudaraju\n"
+"                              s GLOB-om (datoteka s uzorcima)\n"
+"      --exclude=GLOB        presko�i sve datoteke i direktorije koji se\n"
+"                              podudaraju s GLOB-om (datoteka s uzorcima)\n"
+"      --exclude-from=DATOTEKA  presko�i sve datoteke koje se podudaraju s\n"
+"                                 bilo kojim uzorkom u DATOTEKA\n"
+"      --exclude-dir=GLOB    presko�i direktorije koji podudaraju GLOB\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  ispiše samo imena DATOTEKA bez podudaranja\n"
+"  -l, --files-with-matches  ispiše samo imena DATOTEKA s podudaranjima\n"
+"  -c, --count               ispiše samo broj podudarnih redaka po DATOTECI\n"
+"  -T, --initial-tab         poravna tabove (ako je potrebno)\n"
+"  -Z, --null                ispiše 0-bajt nakon imena DATOTEKE\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Kontrola konteksta:\n"
+"  -B, --before-context=BROJ  ispiše BROJ redaka konteksta koji prethode\n"
+"  -A, --after-context=BROJ  ispiše BROJ redaka konteksta koji slijede\n"
+"  -C, --context=BROJ        ispiše BROJ redaka konteksta koji prethode/"
+"slijede\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -BROJ                     isto kao --context=BROJ\n"
+"      --group-separator=SEP  ispiše SEP(arator) u retku između\n"
+"                               podudaranja s kontekstom\n"
+"      --no-group-separator  ne ispiše separator za podudaranja s kontektsom\n"
+"      --color[=KADA],\n"
+"      --colour[=KADA]       bojama istakne nađene stringove i markere;\n"
+"                            KADA može biti „always“ ili „never“ ili „auto“\n"
+"  -U, --binary              ne uklanja CqR znakove na EOL (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Ako je DATOTEKA „-“ (spojnica), �ita standardni ulaz. Bez DATOTEKE,\n"
+"rekurzivno �ita „.“, ina�e �ita „-“ (stdin).\n"
+"S manje od dvije navedene DATOTEKE implicira opciju -h.\n"
+"Završi sa statusom 0 ako je nađen barem jedan redak, ina�e s 1;\n"
+"ako ima grešaka, a nije navedena opcija -q, završi sa statusom 2.\n"
+
+# matchers su traga�i (java, perl, itd.)
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "navedeni uzorci su međusobno konfliktni"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Kompiliranje s --disable-perl-regexp ne podržava podudaranje na Perl na�in"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "nevaljana sintaksa uzorka %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "nepoznata metoda uređaja"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "upozorenje: opcija--unix-byte-offsets (-u) je zastarjela"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "nevaljani maksimalni broj"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "nepoznata vrsta binarnih datoteka"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Napisali Mike Haertel i ostali; vidi\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+# bp: novi msgid
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "dodjela memorije za PCRE JIT st�g nije uspjela"
+
+# bp: novi msgid
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P podržava samo unibyte i UTF-8 locale"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "opcija -P podržava samo jedan uzorak"
+
+# bp: novi msgid
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "**interna greška** (nije se smjela dogoditi)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "prekora�eno je ograni�enje duljine retka PCRE-a"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: nema dovoljno memorije"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: PCRE JIT st�g je iscrpljen"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: prekora�eno je ograni�enje broja vraćanja PCRE-a"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: prekora�eno je ograni�enje broja rekurzija PCRE-a"
+
+# bp:fuzzy popravljen
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: interna PCRE greška: %d"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "upozorenje: %s: %s"
+
+# bp: alias > pseudonim ? > nadimak ?
+# script > skripta
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "Upozorenje: upotreba GREP_OPTIONS je zastarjela ; rabite alias ili script"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "%s internetska stranica: <https://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "nevaljani %s%s argument „%s“"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "nevaljani sufiks u %s%s argumentu „%s“"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s argument „%s“ je preveliki"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "interna greška"
+
+# http://ihjj.hr/ : dozvoljava > dopušta
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: opcija „--%s“ ne dopušta argument\n"
+
+# http://ihjj.hr/ : nepropoznat > nije prepoznat > nepoznat
+# neprepoznat: možda bi trebao biti prepoznat, ali nije
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: nepoznata opcija „--%s“\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: opcija „-W %s“ nije jednozna�na\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: opcija „-W %s“ ne dopušta argument\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: opcija „-W %s“ zahtijeva argument\n"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "UZORAK je (podrazumijeva se) osnovni regularni izraz (BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "„egrep“ zna�i „grep -E“.  „fgrep“ zna�i „grep -F“.\n"
+#~ "Izravno pozivanje „egrep“ i „fgrep“ je zastarjelo.\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "lseek nije uspio"
+
+# bp: novi msgid
+# escape > cause (a subsequent character or characters) to be interpreted differently.
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "znakovi ^ ili $ bez prethodne ‘\\’ (unescaped) nisu podržani s -Pz"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "UZORAK je prošireni regularni izraz (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr "Pozivanje naredbom „egrep� je zastarjelo; koristite „grep -E�.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr ""
+#~ "UZORAK je skup fiksnih znakovnih nizova odvojenih znakom novog retka.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr "Pozivanje naredbom „fgrep� je zastarjelo; koristite „grep -F�.\n"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "GNU Grep po�etna stranica: <%s>\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s može koristiti samo %s sintaksu uzoraka"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "opcija --map je prazna operacija (no-op) od 2010."
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "nedovren broj ponavljanja"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "izoblien broj ponavljanja"
+
+#~ msgid "out of memory"
+#~ msgstr "ponestalo memorije"
+
+#~ msgid "writing output"
+#~ msgstr "piem izlaz"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Koritenje: %s [OPCIJA]... UZORAK [SPIS] ...\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE\n"
+#~ "                            TYPE is 'binary', 'text', or 'without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories\n"
+#~ "                            ACTION is 'read', 'recurse', or 'skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets\n"
+#~ "                            ACTION is 'read' or 'skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=PATTERN     files that match PATTERN will be examined\n"
+#~ "      --exclude=PATTERN     files that match PATTERN will be skipped.\n"
+#~ "      --exclude-from=FILE   files that match PATTERN in FILE will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match only print FILE names containing no match\n"
+#~ "  -l, --files-with-matches  only print FILE names containing matches\n"
+#~ "  -c, --count               only print a count of matching lines per "
+#~ "FILE\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Kontrola izlaza:\n"
+#~ "  -m, --max-count=BROJ      zaustavi se nakon BROJA preklapanja\n"
+#~ "  -b, --byte-offset         ispii bajtovni offset uz brojeve linija\n"
+#~ "  -n, --line-number         ispii brojeve linija uz izlazne linije\n"
+#~ "      --line-buffered       poalji izlaz nakon svakog reda\n"
+#~ "  -H, --with-filename       ispii naziv spisa pri svakom poklapanju\n"
+#~ "  -h, --no-filename         ne ispisuj naziv spisa na izlazu\n"
+#~ "      --label=LABELA        ispii LABELU kao naziv spisa za standardni "
+#~ "izlaz\n"
+#~ "  -o, --only-matching       prikai samo dio retka koji se preklapa s "
+#~ "UZORKOM\n"
+#~ "  -q, --quiet, --silent     zatomi sav normalan izlaz\n"
+#~ "      --binary-files=TIP    pretpostavi da su binarni spisi TIPA\n"
+#~ "                            TIP je 'binary', 'text' ili 'without-match'\n"
+#~ "  -a, --text                ekvivalentno --binary-files=text\n"
+#~ "  -I                        ekvivalentno --binary-files=without-match\n"
+#~ "  -d, --directories=RADNJA  to initi s direktorijima\n"
+#~ "                            RADNJA je 'read' (itaj), "
+#~ "'recurse' (rekurzivno\n"
+#~ "                            ui) ili 'skip' (preskoi)\n"
+#~ "  -D, --devices=RADNJA      to initi s deviceovima, FIFO-ima i socketima\n"
+#~ "                            RADNJA je 'read' (itaj) ili 'skip' (preskoi)\n"
+#~ "  -R, -r, --recursive       ekvivalentno --directories=recurse\n"
+#~ "      --include=UZORAK      obradi spise koji se poklapaju s UZORKOM\n"
+#~ "      --exclude=UZORAK      preskoi spise koji se poklapaju s UZORKOM\n"
+#~ "      --exclude-from=SPIS   preskoi spise koji se poklapaju s UZORKOM u "
+#~ "SPISU\n"
+#~ "  -L, --files-without-match ispii samo nazive SPISA koji se nisu "
+#~ "poklopili\n"
+#~ "  -l, --files-with-matches  ispii samo nazive SPISA koji sadre "
+#~ "podudarnosti\n"
+#~ "  -c, --count               ispii samo broj podudarnih linija po SPISU\n"
+#~ "  -Z, --null                ispii 0-bajt nakon naziva SPISA\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Report bugs to <bug-gnu-utils@gnu.org>.\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Bugove prijavljujte na <bug-gnu-utils@gnu.org>.\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "nepoznata metoda za direktorije"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+#~ msgstr ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions. There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Ovo je slobodan program; za uvjete kopiranja pogledajte izvorni kod. "
+#~ "NEMA\n"
+#~ "jamstva; ak ni za TRGOVINSKU PRIKLADNOST ili ODGOVARANJE ODREENOJ SVRSI.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Opcije -P i -z ne idu zajedno"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: nedoputena opcija -- %c\n"
diff --git a/src/grep/po/hu.gmo b/src/grep/po/hu.gmo
new file mode 100644
index 0000000..0244224
--- /dev/null
+++ b/src/grep/po/hu.gmo
diff --git a/src/grep/po/hu.po b/src/grep/po/hu.po
new file mode 100644
index 0000000..9e633d2
--- /dev/null
+++ b/src/grep/po/hu.po
@@ -0,0 +1,838 @@
+# Hungarian translation for grep.
+# Copyright (C) 2002, 2009, 2010, 2014, 2015, 2016, 2017, 2019 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+#
+# Emese Kovács <emese@instantweb.hu>, 2002, 2010.
+# Gabor Kelemen <kelemeng@gnome.hu>, 2009, 2010, 2014, 2016, 2017.
+# Balázs Úr <ur.balazs@fsf.hu>, 2014, 2015, 2019.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.1.48\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2019-11-23 22:33+0100\n"
+"Last-Translator: Balázs Úr <ur.balazs@fsf.hu>\n"
+"Language-Team: Hungarian <translation-team-hu@lists.sourceforge.net>\n"
+"Language: hu\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: Lokalize 19.04.3\n"
+"Plural-Forms:  nplurals=2; plural=(n != 1);\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "a(z) %s argumentum érvénytelen a következőhöz: %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "a(z) „%s� argumentum nem egyértelmű a következőhöz: „%s�"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Az érvényes argumentumok a következők:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "programhiba"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "verem túlcsordulás"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "íráshiba"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "kiegyensúlyozatlan ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "érvénytelen karakterosztály"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "a karakterosztály szintaxisa [[:space:]], nem [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "befejezetlen \\ escape"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "a \\{\\} tartalma érvénytelen"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "a reguláris kifejezés túl nagy"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "kiegyensúlyozatlan ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "nincs szintaxis megadva"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "kiegyensúlyozatlan )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Ismeretlen rendszerhiba"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: a(z) „%s%s� kapcsoló nem egyértelmű\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: a(z) „%s%s� kapcsoló nem egyértelmű, lehetőségek:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: a(z) „%s%s� kapcsoló ismeretlen\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: a(z) „%s%s� kapcsoló nem enged meg argumentumot\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: a(z) „%s%s� kapcsolóhoz argumentum szükséges\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: érvénytelen kapcsoló -- „%c�\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: a kapcsoló egy argumentumot igényel -- „%c�\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "elfogyott a memória"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "az aktuális munkakönyvtár feljegyzése meghiúsult"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "a visszatérés meghiúsult a kiinduló munkakönyvtárba"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "nem sikerült beállítani a fájlleíró szöveges/bináris módját"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "„"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "�"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Sikerült"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Nincs találat"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Érvénytelen reguláris kifejezés"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Érvénytelen leválogatási karakter"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Érvénytelen karakterosztálynév"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Záró visszaper"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Érvénytelen visszahivatkozás"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Pár nélküli [, [^, [:, [., vagy [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Pár nélküli ( vagy \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Pár nélküli \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "A \\{\\} tartalma érvénytelen"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Érvénytelen tartományvég"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Elfogyott a memória"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Érvénytelen megelőző reguláris kifejezés"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "A reguláris kifejezés túl korán véget ért"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "A reguláris kifejezés túl nagy"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Pár nélküli ) vagy \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Nincs megelőző reguláris kifejezés"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Csomagolta: %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Csomagolta: %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, fuzzy, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"\n"
+"A licenc GPLv3+: a GNU GPL 3. vagy újabb változata <https://gnu.org/licenses/"
+"gpl.html>\n"
+"Ez egy szabad szoftver, terjesztheti és/vagy módosíthatja.\n"
+"NINCS GARANCIA, a törvény által engedélyezett mértékig.\n"
+"\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "�rta %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "�rta %s és %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "�rta %s, %s, és %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"�rta %s, %s, %s,\n"
+"és %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"�rta %s, %s, %s,\n"
+"%s, és %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"�rta %s, %s, %s,\n"
+"%s, %s, és %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"�rta %s, %s, %s,\n"
+"%s, %s, %s, és %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"�rta %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"és %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"�rta %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, és %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"�rta %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, és mások.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"A hibák a(z) %s címen jelenthetők.\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "A(z) %s hibái a(z) %s címen jelenthetők.\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "A(z) %s honlapja: <%s>\n"
+
+#: lib/version-etc.c:260
+#, fuzzy, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+"�ltalános segítség a GNU szoftverek használatához: <https://www.gnu.org/"
+"gethelp/>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(szabványos bemenet)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "érvénytelen szövegkörnyezethossz argumentum"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "a bemenet túl nagy a megszámláláshoz"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "%s bináris fájl illeszkedik\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "rekurzív könyvtárhurok"
+
+#: src/grep.c:1899
+#, fuzzy, c-format
+msgid "%s: input file is also the output"
+msgstr "%s bemeneti fájl a kimenet is"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Használat: %s [KAPCSOLÓ]… MINT�K [F�JL]…\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "További információkért adja ki a(z) „%s --help� parancsot.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "A MINT�K keresése minden F�JLBAN.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Példa: %s -i 'szia világ' menu.h main.c\n"
+"A MINT�K tartalmazhat több mintát új sorokkal elválasztva.\n"
+"\n"
+"Minta kiválasztása és értelmezése:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     a MINT�K kiterjesztett reguláris kifejezések\n"
+"  -F, --fixed-strings       a MINT�K karakterláncok\n"
+"  -G, --basic-regexp        a MINT�K alapvető reguláris kifejezések\n"
+"  -P, --perl-regexp         a MINT�K Perl reguláris kifejezések\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=MINT�K       a MINT�K használata illesztésre\n"
+"  -f, --file=F�JL           a MINT�K beolvasása a F�JLBÓL\n"
+"  -i, --ignore-case         a kis- és nagybetűk megegyeznek\n"
+"  -w, --word-regexp         csak egész szavakra illesztés\n"
+"  -x, --line-regexp         csak egész sorokra illesztés\n"
+"  -z, --null-data           az adat sorai 0 bájtra végződnek, nem újsorra\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Egyéb:\n"
+"  -s, --no-messages         hibaüzenetek elnémítása\n"
+"  -v, --invert-match        a nem illeszkedő sorok kiválogatása\n"
+"  -V, --version             verzióinformációk kiírása és kilépés\n"
+"      --help                ezen súgó kiírása és kilépés\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Kimenet beállításai:\n"
+"  -m, --max-count=SZ�M      megáll SZ�M kiválasztott sor után\n"
+"  -b, --byte-offset         a kimenetben szerepel a sor helye is "
+"(bájteltolás)\n"
+"  -n, --line-number         a kimenetben szerepel a sor száma is\n"
+"      --line-buffered       kimenet kiürítése minden sor után\n"
+"  -H, --with-filename       fájlnév kiírása a kimeneti sorokkal\n"
+"  -h, --no-filename         a kimenetbe nem írja ki a fájlnév előtagot\n"
+"      --label=C�MKE         a C�MKE kiírása fájlnévként a szabványos "
+"bemenet\n"
+"                              használatakor\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       az illeszkedő soroknak csak a nem üres részeit\n"
+"                              jelenítse meg\n"
+"  -q, --quiet, --silent     minden szokványos kimenet elhagyása\n"
+"      --binary-files=T�PUS  a bináris fájlokat adott T�PUSÚNAK veszi, a "
+"T�PUS\n"
+"                              a „binary�, „text� vagy „without-match� "
+"egyike\n"
+"  -a, --text                ugyanaz, mint a --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        ugyanaz, mint a --binary-files=without-match\n"
+"  -d, --directories=MŰVELET mi történjen a könyvtárakkal; a MŰVELET\n"
+"                              a „read�, „recurse� vagy „skip� egyike\n"
+"  -D, --devices=MŰVELET     mi történjen az eszközökkel, FIFO-kkal és\n"
+"                              foglalatokkal, a MŰVELET a „read� vagy „skip�\n"
+"                              egyike\n"
+"  -r, --recursive           ugyanaz, mint a --directories=recurse\n"
+"  -R, --dereference-recursive hasonló, de követi az összes szimlinket\n"
+
+#: src/grep.c:2023
+#, fuzzy, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB        csak a GLOBRA (fájlmintára) illeszkedő fájlok\n"
+"                              keresése\n"
+"      --exclude=GLOB        a GLOBRA (fájlmintára) illeszkedő fájlok és\n"
+"                              könyvtárak kihagyása\n"
+"      --exclude-from=F�JL   a F�JLBAN található fájlmintákra illeszkedő\n"
+"                              fájlok kihagyása\n"
+"      --exclude-dir=GLOB    a GLOBRA (fájlmintára) illeszkedő könyvtárak\n"
+"                              kihagyása\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match csak a kiválasztott sorok nélküli fájlnevek "
+"kiírása\n"
+"  -l, --files-with-matches  csak a kiválasztott sorokat tartalmazó "
+"fájlnevek\n"
+"                              kiírása\n"
+"  -c, --count               csak a kiválasztott sorok számának kiírása, "
+"F�JLONKÉNT\n"
+"  -T, --initial-tab         sorok feltöltése tabokkal (ha szükséges)\n"
+"  -Z, --null                0 bájt írása a F�JLNÉV után\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Szövegkörnyezet beállításai:\n"
+"  -B, --before-context=SZ�M SZ�M db. sor kiírása a találat előtti "
+"környezetből\n"
+"  -A, --after-context=SZ�M  SZ�M db. sor kiírása a találat utáni "
+"környezetből\n"
+"  -C, -- context=SZ�M       SZ�M darab sor kiírása a környezetből\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -SZ�M                     ugyanaz, mint a --context=SZ�M\n"
+"      --color[=EKKOR],\n"
+"      --colour[=EKKOR]      az illeszkedő karakterláncot beszínezi\n"
+"                              az EKKOR lehet „always�, „never� vagy „auto�\n"
+"  -U, --binary              nem vágja le a CR karaktereket sor végén\n"
+"                              (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Ha a F�JL a „-�, akkor a szabványos bemenetről olvas. Ha nincs megadva "
+"F�JL,\n"
+"rekurzív működéskor a „.� egyébként a „-� olvasása. Kettőnél kevesebb F�JL\n"
+"megadásakor a -h kapcsolót feltételezi. A kilépési állapot 0, ha bármely "
+"sor\n"
+"(vagy fájl a -L kapcsolónál) kiválasztásra kerül, egyébként 1. Ha hiba\n"
+"történt és a -q nincs megadva, akkor a kilépési állapot 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "ütköző illesztők lettek megadva"
+
+#: src/grep.c:2101
+#, fuzzy
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"a -P kapcsoló támogatása nincs belefordítva ebbe a --disable-perl-regexp "
+"binárisba"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "érvénytelen illesztő: %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "ismeretlen eszközmódszer"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "érvénytelen maximális szám"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "ismeretlen bináris fájl típus"
+
+#: src/grep.c:2829
+#, fuzzy
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr "mások, lásd: <https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "nem sikerült memóriát foglalni a PCRE JIT veremnek"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "a -P csak unibyte és UTF-8 területi beállításokat támogat"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "a -P kapcsoló csak egy mintát támogat"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "belső hiba (soha nem szabadna előfordulnia)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "a PCRE sorhossza túllépve"
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "elfogyott a memória"
+
+#: src/pcresearch.c:310
+#, fuzzy, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "kifogyott a PCRE JIT verem"
+
+#: src/pcresearch.c:315
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "a PCRE visszakövetési korlátja túllépve"
+
+#: src/pcresearch.c:319
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "a PCRE visszakövetési korlátja túllépve"
+
+#: src/pcresearch.c:327
+#, fuzzy, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "belső PCRE hiba: %d"
+
+#, c-format
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "figyelem: a GREP_OPTIONS elavult; használjon álnevet vagy parancsfájlt"
+
+#, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "figyelmeztetés: %s: %s"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "A %s honlapja: <https://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "érvénytelen %s%s argumentum: „%s�"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "érvénytelen utótag a(z) %s%s argumentumban: „%s�"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s: a(z) „%s� argumentum túl nagy"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "belső hiba"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: a(z) „--%s� kapcsoló nem enged meg argumentumot\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: a(z) „--%s� kapcsoló ismeretlen\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: a „-W %s� kapcsoló nem egyértelmű\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: a „-W %s� kapcsoló nem enged meg argumentumot\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: a(z) „-W%s� kapcsolóhoz argumentum szükséges\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "az lseek meghiúsult"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "A MINTA egy alapszintű reguláris kifejezés (BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "Az „egrep� jelentése „grep -E�. Az „fgrep� jelentése „grep -F�.\n"
+#~ "A közvetlen hívás „egrep� vagy „fgrep� formában elavult.\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "a nem escapelt ^ vagy $ nem támogatott a -Pz kapcsolóval"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "A GNU Grep honlapja: <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "érvénytelen UTF-8 bájtsorozat a bemenetben"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "A MINTA egy bővített reguláris kifejezés (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr ""
+#~ "A hívás „egrep� formában elavult, használja helyette a „grep -E� alakot.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "A MINTA egy újsorokkal elválasztott rögzített karakterlánc.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr ""
+#~ "A hívás „fgrep� formában elavult, használja helyette a „grep -F� alakot.\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "a(z) %s csak a(z) %s mintaszintaxist tudja használni"
diff --git a/src/grep/po/id.gmo b/src/grep/po/id.gmo
new file mode 100644
index 0000000..3ff2def
--- /dev/null
+++ b/src/grep/po/id.gmo
diff --git a/src/grep/po/id.po b/src/grep/po/id.po
new file mode 100644
index 0000000..291b05e
--- /dev/null
+++ b/src/grep/po/id.po
@@ -0,0 +1,749 @@
+# Pesan bahasa indonesia untuk grep
+# Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Tedi Heriyanto <tedi_h@gmx.net>, 1999, 2000, 2001, 2002.
+# Arif E. Nugroho <arif_endro@yahoo.com>, 2008, 2009, 2010, 2011, 2012, 2013, 2014.
+# Andika Triwidada <andika@gmail.com>, 2018, 2020, 2021.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-10 10:35+0700\n"
+"Last-Translator: Andika Triwidada <andika@gmail.com>\n"
+"Language-Team: Indonesian <translation-team-id@lists.sourceforge.net>\n"
+"Language: id\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-1\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: Poedit 2.4.3\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "argumen %s yang tidak valid untuk %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "argumen %s ambigu untuk %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Argumen yang valid adalah:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "kesalahan program"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "stack overflow"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "kesalahan tulis"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ tidak seimbang"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "kelas karakter tidak valid"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "sintaks kelas karakter adalah [[:space:]], bukan [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "escape \\ tidak selesai"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "isi dari \\{\\} tidak valid"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "ekspresi reguler terlalu besar"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( tidak seimbang"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "tidak ada sintaks yang dinyatakan"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") tidak seimbang"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Kesalahan sistem tidak dikenal"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: opsi '%s%s' ambigu\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: opsi '%s%s' ambigu; kemungkinan:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: opsi tidak dikenal '%s%s'\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: opsi '%s%s' tidak mengizinkan sebuah argumen\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: opsi '%s%s' membutuhkan sebuah argumen\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: opsi tidak valid -- %c\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: opsi membutuhkan sebuah argumen -- %c\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "kehabisan memori"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "tidak bisa merekam direktori kerja sekarang"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "gagal kembali ke direktori kerja sekarang"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "gagal menata mode teks/biner descriptor berkas"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "'"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Sukses"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Tak ada yang cocok"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Ekspresi reguler tidak valid"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Karakter kolasi tidak valid"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Nama kelas karakter tidak valid"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Kelebihan backslash"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Referensi balik tidak valid"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "[, [^, [:, [., atau [= tanpa pasangan"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( atau \\( tanpa pasangan"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ tanpa pasangan"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Isi dari \\{\\} tidak valid"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Akhir rentang tidak valid"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Kehabisan memori"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Ekspresi reguler yang mendahului tidak valid"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Akhir dini dari ekspresi reguler"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Ekspresi reguler terlalu besar"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") atau \\) tanpa pasangan"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Tidak ada ekspresi reguler sebelumnya"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Dipaketkan oleh %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Dipaketkan oleh %s \n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Lisensi GPLv3+; GNU GPL versi 3 atau lebih lanjut <%s>.\n"
+"Ini adalah aplikasi bebas; Anda bebas untuk mengubah dan "
+"meredistribusikannya.\n"
+"TIDAK ADA GARANSI disini, sampai batas yang diijinkan oleh hukum yang "
+"berlaku.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Ditulis oleh %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Ditulis oleh %s dan %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Ditulis oleh %s, %s, and %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Ditulis oleh %s, %s, %s,\n"
+"dan %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Ditulis oleh %s, %s, %s,\n"
+"%s, dan %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Ditulis oleh %s, %s, %s,\n"
+"%s, %s, dan %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Ditulis oleh %s, %s, %s,\n"
+"%s, %s, %s, dan %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Ditulis oleh %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"dan %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Ditulis oleh %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, dan %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Ditulis oleh %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, dan yang lain.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Laporkan kutu ke: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Laporkan kutu %s ke: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Laman web %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Bantuan umum menggunakan aplikasi GNU: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(masukan standar)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "argumen panjang konteks tidak valid"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "masukan terlalu besar untuk dihitung"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: berkas biner cocok"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: peringatan: perulangan direktori rekursif"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: berkas masukan juga sebagai keluaran"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Penggunaan: %s [OPSI]... POLA [BERKAS]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Coba '%s --help' untuk informasi lebih lanjut.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Cari POLA dalam setiap BERKAS.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Contoh: %s -i 'hello world' menu.h main.c\n"
+"POLA bisa memuat beberapa pola yang dipisah oleh baris baru.\n"
+"\n"
+"Seleksi dan interpretasi pola:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     POLA adalah ekspresi reguler diperluas\n"
+"  -F, --fixed-string        POLA adalah string\n"
+"  -G, --basic-regexp        POLA adalah ekspresi reguler dasar\n"
+"  -P, --perl-regexp         POLA adalah sebuah ekspresi reguler Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=POLA         gunakan POLA untuk pencocokan\n"
+"  -f, --file=BERKAS         dapatkan POLA dari BERKAS\n"
+"  -i, --ignore-case         abaikan perbedaan besar kecil huruf dalam pola "
+"dan data\n"
+"      --no-ignore-case      jangan abaikan perbedaan besar kecil huruf "
+"(baku)\n"
+"  -w, --word-regexp         paksa POLA hanya untuk pencocokan dengan "
+"keseluruhan kata\n"
+"  -x, --line-regexp         paksa POLA hanya untuk pencocokan dengan "
+"keseluruhan baris\n"
+"  -z, --null-data           baris data berakhir dengan byte 0, bukan baris-"
+"baru\n"
+"\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Lain-lain:\n"
+"  -s, --no-messages         sembunyikan pesan kesalahan\n"
+"  -v, --invert-match        pilih baris-baris yang tidak sesuai\n"
+"  -V, --version             tampilkan informasi versi dan keluar\n"
+"      --help                tampilkan bantuan ini dan keluar\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Kendali keluaran:\n"
+"  -m, --max-count=NUM       berhenti setelah NUM kecocokan\n"
+"  -b, --byte-offset         cetak ofset byte dengan baris-baris keluaran\n"
+"  -n, --line-number         cetak nomor baris dengan baris-baris keluaran\n"
+"      --line-buffered       gelontor keluaran pada setiap baris\n"
+"  -H, --with-filename       cetak nama berkas dengan baris-baris keluaran\n"
+"  -h, --no-filename         sembunyikan prefiks nama berkas pada keluaran\n"
+"      --label=LABEL         pakai LABEL sebagai prefiks nama berkas masukan "
+"standar\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       hanya tampilkan bagian dari baris yang cocok\n"
+"  -q, --quiet, --silent     sembunyikan semua keluaran normal\n"
+"      --binary-files=TIPE   asumsikan bahwa berkas biner adalah TIPE;\n"
+"                            TIPE adalah 'binary', 'text', atau 'without-"
+"match'\n"
+"  -a, --text                ekuivalen dengan --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        ekuivalen dengan --binary-files=without-match\n"
+"  -d, --directories=AKSI    bagaimana menangani direktori;\n"
+"                            AKSI adalah 'read', 'recurse', atau 'skip'\n"
+"  -D, --devices=AKSI        bagaimana menangani peranti, FIFO, dan soket;\n"
+"                            AKSI adalah 'read' atau 'skip'\n"
+"  -r, --recursive           seperti --directories=recurse\n"
+"  -R, --dereference-recursive  serupa, tapi ikut semua symlink\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB         hanya cari berkas yang cocok dengan GLOB (suatu "
+"pola berkas)\n"
+"      --exclude=GLOB         lewati berkas yang cocok dengan GLOB\n"
+"      --exclude-from=BERKAS  lewati berkas yang cocok dengan sebarang pola "
+"dari BERKAS\n"
+"      --exclude-dir=GLOB     lewati direktori yang cocok dengan GLOB\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  hanya cetak nama BERKAS yang tidak memuat baris "
+"yang cocok\n"
+"  -l, --files-with-matches   hanya cetak nama BERKAS dengan baris yang "
+"cocok\n"
+"  -c, --count                hanya cetak cacah baris yang cocok per BERKAS\n"
+"  -T, --initial-tab          jadikan tab sejajar (bila diperlukan)\n"
+"  -Z, --null                 cetak byte 0 setelah nama BERKAS\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Kendali konteks:\n"
+"  -B, --before-context=NUM  cetak NUM baris yang mendahului konteks\n"
+"  -A, --after-context=NUM   cetak NUM baris yang mengikuti konteks\n"
+"  -C, --context=NUM         cetak NUM baris konteks keluaran\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      sama seperti --context=NUM\n"
+"      --group-separator=SEP  cetak SEP pada baris antara kecocokan dengan "
+"konteks\n"
+"      --no-group-separator  jangan cetak pemisah untuk kecocokan dengan "
+"konteks\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       gunakan penanda untuk membedakan string yang "
+"cocok\n"
+"                            WHEN dapat berupa 'always', 'never', atau "
+"'auto'\n"
+"  -U, --binary              jangan hapus karakter CR di EOL (MSDOS)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Jika BERKAS adalah '-', baca masukan standar.  Tanpa BERKAS, baca '.'\n"
+"bila rekursif, '-' jika tidak.  Dengan kurang dari dua BERKAS, asumsikan -"
+"h.\n"
+"Status keluar adalah 0 jika baris apa pun dipilih, 1 jika tidak;\n"
+"jika ada kesalahan apapun dan opsi -q tidak diberikan, status keluar adalah "
+"2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "pencocok yang bertentangan dispesifikasikan"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr "Pencocokan Perl tidak didukung dalam suatu build --disable-perl-regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "pencocok tidak valid %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "metode peranti tidak dikenal"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "peringatan: --unix-byte-offsets (-u) usang"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "cacah maks tidak valid"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "tipe berkas biner tidak dikenal"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Ditulis oleh Mike Haertel dan lainnya, lihat\n"
+"<http://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "gagal mengalokasikan memori untuk stack JIT PCRE"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P hanya mendukung unibyte dan locale UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "opsi -P hanya mendukung sebuah pola tunggal"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "kesalahan internal (mestinya tidak pernah terjadi)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "melampaui batas panjang baris PCRE"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: kehabisan memori"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: stack JIT PCRE habis"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: melampaui batas backtrack PCRE"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: melampaui batas rekursi PCRE"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: kesalahan PCRE internal: %d"
diff --git a/src/grep/po/insert-header.sin b/src/grep/po/insert-header.sin
new file mode 100644
index 0000000..b26de01
--- /dev/null
+++ b/src/grep/po/insert-header.sin
@@ -0,0 +1,23 @@
+# Sed script that inserts the file called HEADER before the header entry.
+#
+# At each occurrence of a line starting with "msgid ", we execute the following
+# commands. At the first occurrence, insert the file. At the following
+# occurrences, do nothing. The distinction between the first and the following
+# occurrences is achieved by looking at the hold space.
+/^msgid /{
+x
+# Test if the hold space is empty.
+s/m/m/
+ta
+# Yes it was empty. First occurrence. Read the file.
+r HEADER
+# Output the file's contents by reading the next line. But don't lose the
+# current line while doing this.
+g
+N
+bb
+:a
+# The hold space was nonempty. Following occurrences. Do nothing.
+x
+:b
+}
diff --git a/src/grep/po/it.gmo b/src/grep/po/it.gmo
new file mode 100644
index 0000000..206d42a
--- /dev/null
+++ b/src/grep/po/it.gmo
diff --git a/src/grep/po/it.po b/src/grep/po/it.po
new file mode 100644
index 0000000..8cb743e
--- /dev/null
+++ b/src/grep/po/it.po
@@ -0,0 +1,755 @@
+# Italian translation of grep
+# Copyright (C) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2016, 2018 Free Software Foundation, Inc.
+# Copyright (C) 2020 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+#
+# Marco d'Itri <md@linux.it>, 1999, 2001.
+# Milo Casagrande <milo@milo.name>, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2016, 2018, 2020.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep-3.5.16\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2020-11-14 15:55+0100\n"
+"Last-Translator: Milo Casagrande <milo@milo.name>\n"
+"Language-Team: Italian <tp@lists.linux.it>\n"
+"Language: it\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=2; plural=(n!=1);\n"
+"X-Generator: Poedit 2.4.1\n"
+"X-Poedit-SourceCharset: UTF-8\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "argomento %s per %s non valido"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "argomento %s ambiguo per %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Gli argomenti validi sono:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "errore del programma"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "overflow dello stack"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "errore di scrittura"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ non bilanciata"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "Classe del carattere non valido"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "La sintassi per la classe di caratteri è [[:space:]], non [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "Escape \\ incompleto"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "Contenuto di \\{\\} non valido"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "Espressione regolare troppo grande"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( non bilanciata"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "Nessuna sintassi specificata"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") non bilanciata"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Errore di sistema sconosciuto"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: l'opzione \"%s%s\" è ambigua\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: l'opzione \"%s%s\" è ambigua. Possibilità:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: opzione \"%s%s\" non riconosciuta\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: l'opzione \"%s%s\" non accetta argomenti\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: l'opzione \"%s%s\" richiede un argomento\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: opzione non valida -- \"%c\"\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: l'opzione richiede un argomento -- \"%c\"\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "memoria esaurita"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "impossibile registrare la directory di lavoro attuale"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "errore nel restituire la directory di lavoro iniziale"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+"impostazione del descrittore file in modalità testo/binario non riuscita"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "\""
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "\""
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Successo"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Nessuna corrispondenza"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Espressione regolare non valida"
+
+# (ndt) http://en.wikipedia.org/wiki/Collation
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Carattere di collazione non valido"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Nome classe del carattere non valido"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Backslash finale"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Riferimento all'indietro non valido"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "[, [^, [:, [., o [= senza corrispondenza"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( o \\( senza corrispondenza"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ senza corrispondenza"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Contenuto di \\{\\} non valido"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Limite massimo non valido"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Memoria esaurita"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Espressione regolare precedente non valida"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Fine prematura dell'espressione regolare"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Espressione regolare troppo grande"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") o \\) senza corrispondenza"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Nessuna espressione regolare precedente"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Pacchetto creato da %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Pacchetto creato da %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Licenza GPLv3+: GNU GPL versione 3 o successiva <%s>.\n"
+"Questo programma è software libero: siete liberi di modificarlo e "
+"ridistribuirlo.\n"
+"Non c'è ALCUNA GARANZIA, per quanto consentito dalle vigenti normative.\n"
+"\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Scritto da %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Scritto da %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Scritto da %s, %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Scritto da %s, %s, %s\n"
+"e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Scritto da %s, %s, %s,\n"
+"%s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Scritto da %s, %s, %s,\n"
+"%s, %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Scritto da %s, %s, %s,\n"
+"%s, %s, %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Scritto da %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Scritto da %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Scritto da %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s e altri.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Segnalare i bug a: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Segnalare i bug di %s a: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Sito web di %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Pagina di aiuto per l'utilizzo di software GNU: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standard input)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "argomento della lunghezza del contesto non valido"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "l'input è troppo grande per essere contato"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: il file binario corrisponde"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: attenzione: ciclo ricorsivo di directory"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: il file di input è anche l'output"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Uso: %s [OPZIONE]... MODELLI [FILE]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Usare \"%s --help\" per ulteriori informazioni.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Cerca MODELLI in ogni FILE\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Esempio: %s -i \"ciao mondo\" menu.h main.c\n"
+"MODELLI può contenere diversi modelli separati da newline.\n"
+"\n"
+"Selezione e interpretazione del modello:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     MODELLI sono espressioni regolari estese\n"
+"  -F, --fixed-strings       MODELLI sono stringhe\n"
+"  -G, --basic-regexp        MODELLI sono espressioni regolari semplici\n"
+"  -P, --perl-regexp         MODELLI sono espressioni regolari Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=MODELLI      Usa MODELLI per la corrispondenza\n"
+"  -f, --file=FILE           Ottiene i MODELLI dal FILE\n"
+"  -i, --ignore-case         Ignora la distinzione maiuscole/minuscole\n"
+"      --no-ignore-case      Non ignora la distinzione maiuscole/minuscole\n"
+"                            (predefinito)\n"
+"  -w, --word-regexp         Corrispondere solo a parole intere\n"
+"  -x, --line-regexp         Corrispondere solo a righe intere\n"
+"  -z, --null-data           Una riga di dati termina con il byte 0 invece "
+"che\n"
+"                            newline\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Varie:\n"
+"  -s, --no-messages         Elimina i messaggi di errore\n"
+"  -v, --invert-match        Seleziona le righe che non corrispondono\n"
+"  -V, --version             Stampa la versione ed esce\n"
+"      --help                Visualizza questo aiuto ed esce\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Controllo dell'output:\n"
+"  -m, --max-count=NUM       Si ferma dopo NUM righe selezionate\n"
+"  -b, --byte-offset         Stampa l'offset del byte con le righe di output\n"
+"  -n, --line-number         Stampa il numero della riga con le righe di "
+"output\n"
+"      --line-buffered       Esegue il flush dell'output con ogni riga\n"
+"  -H, --with-filename       Stampa il nome del file con le righe di output\n"
+"  -h, --no-filename         Elimina il nome del file dall'output\n"
+"      --label=ETICH         Usa ETICH come nome del file per lo standard "
+"input\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       Mostra solo la parte della riga che corrisponde\n"
+"  -q, --quiet, --silent     Elimina tutto l'output normale\n"
+"      --binary-files=TIPO   Suppone che i file binari siano del TIPO \"binary"
+"\",\n"
+"                            \"text\" oppure \"without-match\"\n"
+"  -a, --text                Equivale a --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        Equivale a --binary-files=without-match\n"
+"  -d, --directories=AZIONE  Come gestire le directory: AZIONE è \"read\",\n"
+"                            \"recurse\" o \"skip\"\n"
+"  -D, --devices=AZIONE      Come gestire device, FIFO e socket: AZIONE è\n"
+"                            \"read\" o \"skip\"\n"
+"  -r, --recursive           Equivale a --directories=recurse\n"
+"  -R, --dereference-recursive\n"
+"                            Simile al precedente, ma segue i collegamenti\n"
+"                            simbolici\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB        Esamina solo i file corrispondenti a GLOB "
+"(modello di file)\n"
+"      --exclude=GLOB        Salta file corrispondenti a GLOB\n"
+"      --exclude-from=FILE   Salta i file corrispondenti ai modelli nel FILE\n"
+"      --exclude-dir=GLOB    Salta le directory corrispondenti a GLOB\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match Stampa solo i nomi dei FILE senza righe "
+"selezionate\n"
+"  -l, --files-with-matches  Stampa solo i nomi dei FILE con righe "
+"selezionate\n"
+"  -c, --count               Stampa solo il conteggio delle righe selezionate "
+"in\n"
+"                            ogni FILE\n"
+"  -T, --initial-tab         Allinea le tabulazioni (se necessario)\n"
+"  -Z, --null                Stampa il byte 0 dopo ogni nome di FILE\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Controllo del contesto:\n"
+"  -B, --before-context=NUM  Stampa NUM righe di contesto precedente\n"
+"  -A, --after-context=NUM   Stampa NUM righe di contesto seguente\n"
+"  -C, --context=NUM         Stampa NUM righe di contesto dell'output\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      Come --context=NUM\n"
+"      --color[=QUANDO],\n"
+"      --colour[=QUANDO]     Usa i colori per distinguere le stringhe\n"
+"                            corrispondenti; QUANDO può essere \"always\", "
+"\"never\"\n"
+"                            o \"auto\"\n"
+"  -U, --binary              Non rimuove i caratteri CR all'EOL (MSDOS/"
+"Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Se FILE è \"-\", legge lo standard input; se non c'è alcun FILE, legge \".\" "
+"se in\n"
+"modalità ricorsiva, altrimenti \"-\". Se sono stati specificati meno di due "
+"FILE\n"
+"presume -h. Esce con lo stato 0 se è stata selezionata almeno una riga,\n"
+"1 altrimenti. Se si verifica un errore e l'opzione -q non è\n"
+"stata usata, lo stato di uscita è 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "specificate corrispondenze in conflitto"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Corrispondenze Perl non supportate: questo binario è compilato con --disable-"
+"perl-regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "corrispondenza %s non valida"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "metodo per i device sconosciuto"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "numero massimo non valido"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "tipo di file binario sconosciuto"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Creato da Mike Haertel e altri; consultare\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "impossibile allocare memoria per lo stack PCRE JIT"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P supporta solamente lingue unibyte e UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "l'opzione -P supporta un solo modello"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "errore interno (non si dovrebbe mai verificare)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "limite di lunghezza riga PCRE raggiunto"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: memoria esaurita"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: stack JIT PCRE esaurito"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: limite di backtrack PCRE raggiunto"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: limite di ricorsione PCRE superato"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: errore interno PCRE: %d"
diff --git a/src/grep/po/ja.gmo b/src/grep/po/ja.gmo
new file mode 100644
index 0000000..fa3f6fb
--- /dev/null
+++ b/src/grep/po/ja.gmo
diff --git a/src/grep/po/ja.po b/src/grep/po/ja.po
new file mode 100644
index 0000000..3952c36
--- /dev/null
+++ b/src/grep/po/ja.po
@@ -0,0 +1,1445 @@
+# Japanese messages for GNU grep
+# Copyright (C) 1996, 2014 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# IIDA Yosiaki <iida@gnu.org>, 1999, 2000, 2001, 2002.
+# Yasuyuki Furukawa <yasu@on.cs.keio.ac.jp>, 1997
+# and taken over on 1999-09-24 by IIDA.
+# Special thanks to
+# Daisuke Yamashita <yamad@mb.infoweb.ne.jp>, 1999.
+# Masahito Yamaga <yamaga@ipc.chiba-u.ac.jp>, 2002.
+# GOTO Masanori <gotom@debian.or.jp>, 2006.
+#  derived from the version by Yasuyuki Furukawa <yasu@on.cs.keio.ac.jp> 1998.
+#                              Jun Nishii <jun@flatout.org> 1999.
+#                              Daisuke Yamashita <yamad@mb.infoweb.ne.jp> 1999.
+# Yasuaki Taniguchi <yasuakit@gmail.com>, 2010, 2011, 2014, 2017.
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU grep 3.0.23-b00\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2017-06-25 20:16+0900\n"
+"Last-Translator: Yasuaki Taniguchi <yasuakit@gmail.com>\n"
+"Language-Team: Japanese <translation-team-ja@lists.sourceforge.net>\n"
+"Language: ja\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+"X-Generator: Poedit 2.0.2\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "%2$s �対�る引数 %1$s �間������"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "%2$s �対�る引数 %1$s �曖昧��"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "有効�引数:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "プログラムエラー"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "スタックオー�ーフロー"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "書�込�エラー"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "対応��れ���� [ ��"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "無効�文字クラス���"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "文字クラス�構文� [[:space:]] ��。 [:space:] ���り��ん"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "\\ エスケープ�終了�����ん"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "\\{\\} �中身�無効��"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "正�表��大�����"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "対応��れ���� ( ��"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "構文�指定�れ����ん"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "対応��れ���� ) ��"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "�明�システムエラー"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: オプション '%s%s' �曖昧��\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: オプション '%s%s' �曖昧��。次�も���能��:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: オプション '%s%s' を�識����ん\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: オプション '%s%s' �引数を�る�������ん\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: オプション '%s%s' �引数�必���\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: 無効�オプション -- '%c'\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: オプション��引数�必��� -- '%c'\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "メモリを使�果�����"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "�在�作業ディレクトリーを記録�る�������ん"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "�期作業ディレクトリー�戻る��失敗����"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "ファイル記述�をテキスト/�イナリモード�設定����ん���"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "`"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "�功��"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "一致���ん"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "無効�正�表���"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "無効�照�文字��"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "無効�文字クラス���"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "終端��ックスラッシュ"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "無効��方�照��"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "[�[^�[:�[.���� [= ��一致��"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( ��� \\( ��一致��"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ ��一致��"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "\\{\\} �中身�無効��"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "無効�範囲終了��"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "メモリを使�果�����"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "無効��方正�表���"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "正�表��途中�終了����"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "正�表��大�����"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") ��� \\) ��一致��"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "以��正�表���り��ん"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "パッケージ作�者: %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "パッケージ作�者: %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, fuzzy, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"\n"
+"ライセンス GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl."
+"html>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+"\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "作者 %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "作者 %s �よ� %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "作者 %s� %s��よ� %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"作者 %s� %s� %s�\n"
+"�よ� %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"作者 %s� %s� %s�\n"
+"%s��よ� %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"作者 %s� %s� %s�\n"
+"%s� %s��よ� %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"作者 %s� %s� %s�\n"
+"%s� %s� %s��よ� %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"作者 %s� %s� %s�\n"
+"%s� %s� %s� %s�\n"
+"�よ� %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"作者 %s� %s� %s�\n"
+"%s� %s� %s� %s�\n"
+"%s��よ� %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"作者 %s� %s� %s�\n"
+"%s� %s� %s� %s�\n"
+"%s� %s� �よ�他�方々。\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"�グを発見��ら <%s> �報告��下��。\n"
+"翻訳�関�る�グ�<translation-team-ja@lists.sourceforge.net>�報告�����"
+"�。\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+"%s ��グを発見��ら <%s> �報告��下��。\n"
+"翻訳�関�る�グ�<translation-team-ja@lists.sourceforge.net>�報告�����"
+"�。\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "%s �ホームページ: <%s>\n"
+
+#: lib/version-etc.c:260
+#, fuzzy, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+"GNU ソフトウェアを使用�る際�一般的�ヘルプ: <http://www.gnu.org/gethelp/>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(標準入力)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "一致���後�行�表示�関�る引数�無効��"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "入力�大����数�られ��ん"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "�イナリファイル %s �一致����\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "ディレクトリー��帰的ループを�����"
+
+#: src/grep.c:1899
+#, fuzzy, c-format
+msgid "%s: input file is also the output"
+msgstr "入力ファイル %s �出力�も������"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "使用法: %s [OPTION]... PATTERN [FILE]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "詳���'%s --help'を実行������。\n"
+
+#: src/grep.c:1969
+#, fuzzy, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "� FILE 内� PATTERN を検索���。\n"
+
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"例: %s -i 'hello world' menu.h main.c\n"
+"\n"
+"パターン��択�よ�解釈:\n"
+
+#: src/grep.c:1975
+#, fuzzy, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     PATTERN を拡張正�表���る\n"
+"  -F, --fixed-strings       PATTERN を改行�区切られ�文字列�組��る\n"
+"  -G, --basic-regexp        PATTERN を基本正�表���る(デフォルト)\n"
+"  -P, --perl-regexp         PATTERN を Perl 正�表���る\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=PATTERN      一致処�� PATTERN を使用�る\n"
+"  -f, --file=FILE           FILE �ら PATTERN を�得�る\n"
+"  -i, --ignore-case         大文字��文字を区別���\n"
+"  -w, --word-regexp         強制的��語全体� PATTERN �一致処�を行�\n"
+"  -x, --line-regexp         強制的�行全体� PATTERN �一致処�を行�\n"
+"  -z, --null-data           データ�行末を改行���� NULL ��る\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"��他:\n"
+"  -s, --no-messages         エラーメッセージを抑止�る\n"
+"  -v, --invert-match        一致���行を�択�る\n"
+"  -V, --version             �ージョン情報を表示��終了�る\n"
+"      --help                ��ヘルプを表示��終了�る\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"出力�制御:\n"
+"  -m, --max-count=NUM       NUM 行一致後�中断�る\n"
+"  -b, --byte-offset         出力行�併���イトオフセットを表示�る\n"
+"  -n, --line-number         出力行�併��行番�を表示�る\n"
+"      --line-buffered       行���出力を flush �る\n"
+"  -H, --with-filename       出力行�併��ファイル�を表示�る\n"
+"  -h, --no-filename         出力�先頭�ファイル�を付���\n"
+"      --label=LABEL         標準入力�ファイル��接頭辞��� LABEL を使用�"
+"ã‚‹\n"
+
+#: src/grep.c:2007
+#, fuzzy, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       行�中� PATTERN �一致��部分��表示�る\n"
+"  -q, --quiet, --silent     通常出力を全�抑止�る\n"
+"      --binary-files=TYPE   �イナリファイル�形�を TYPE �仮定�る\n"
+"                            TYPE � 'binary'�'text' ��� 'without-match'\n"
+"  -a, --text                --binary-files=text �等価\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        --binary-files=without-match �等価\n"
+"  -d, --directories=ACTION  ディレクトリー�扱�方を指定�る\n"
+"                            ACTION � 'read'�'recurse' ��� 'skip'\n"
+"  -D, --devices=ACTION      デ�イス�FIFO �よ�ソケット�扱�方を指定�る\n"
+"                            ACTION � `read' ��� `skip'\n"
+"  -r, --recursive           --directories=recurse �等価\n"
+"  -R, --dereference-recursive  上��様��シンボリックリンクを辿る\n"
+
+#: src/grep.c:2023
+#, fuzzy, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=FILE_PATTERN  FILE_PATTERN �一致��ファイル��検索�る\n"
+"      --exclude=FILE_PATTERN  FILE_PATTERN 一致��ファイル・ディレクトリーを"
+"スキップ�る\n"
+"      --exclude-from=FILE   FILE �ら読�込ん�ファイル��パターン�一致�る"
+"ファイルをスキップ�る\n"
+"      --exclude-dir=PATTERN  PATTERN �一致��ディレクトリーをスキップ�る\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  PATTERN �一致��� FILE �����表示�る\n"
+"  -l, --files-with-matches  PATTERN �一致�る FILE �����表示�る\n"
+"  -c, --count               FILE ���一致��行数��表示�る\n"
+"  -T, --initial-tab         タブを使用��整列�る (必��場�)\n"
+"  -Z, --null                FILE ���を表示��後�値� 0 ��イトを出力�"
+"ã‚‹\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"�後�表示�関�る制御:\n"
+"  -B, --before-context=NUM  一致���� NUM 行を表示�る\n"
+"  -A, --after-context=NUM   一致��後� NUM 行を表示�る\n"
+"  -C, --context=NUM         一致���後 NUM 行を表示�る\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      --context=NUM �等価\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       一致��文字列を�イライト�る����を使用�"
+"る。\n"
+"                            WHEN � 'always'�'never' ��� 'auto'\n"
+"  -U, --binary              行末��る CR を削除��� (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"FILE � '-' �場��標準入力�ら読�込���。FILE を指定���場��ディレク"
+"トリーを�帰的�\n"
+"処��る場�� '.'��れ以外� '-' ��り��。FILE を1個��指定��場�� -"
+"h も有効��り��。\n"
+"終了コード��行��択�れ�場�� 0��れ以外� 1 ��。エラー�発生�� -q "
+"を指定�����\n"
+"場��終了コード� 2 ��り��。\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "指定��一致処�系�競������"
+
+#: src/grep.c:2101
+#, fuzzy
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"���イナリ� --disable-perl-regexp 付��コンパイル�れ��る�� -P オプ"
+"ション�サ�ート���ん"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "%s �無効�一致処�系��"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "デ�イス�対�る�明��作��"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "無効�一致回数��"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "�明��イナリファイル�形���"
+
+#: src/grep.c:2829
+#, fuzzy
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"��他�方々� <http://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS> を�照��"
+"����"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "PCRE JIT スタック��メモリ割り当��失敗����"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P �1�イト� UTF-8 ロケール��サ�ート���"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "-P オプション��一�パターン��サ�ート���ん"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "内部エラー (決��発生�����)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "PCRE �行長制�を超�����"
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "メモリを使�果�����"
+
+#: src/pcresearch.c:310
+#, fuzzy, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "PCRE JIT スタックを使�果�����"
+
+#: src/pcresearch.c:315
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "PCRE ��ックスラッシュ制�を超�����"
+
+#: src/pcresearch.c:319
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "PCRE ��ックスラッシュ制�を超�����"
+
+#: src/pcresearch.c:327
+#, fuzzy, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "PCRE 内部エラー: %d"
+
+#, c-format
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "警告: GREP_OPTIONS �廃止�れ���。alias ���スクリプトを使用����"
+#~ "��"
+
+#, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "警告: %s: %s"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "引数 '%3$s' �対�� %1$s%2$s �無効��"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "引数 '%3$s' �対��無効�接尾辞 %1$s%2$s ��"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "引数 '%3$s' �対�る %1$s%2$s �大�����"
+
+#, fuzzy
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "%s �ホームページ: <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "internal error"
+#~ msgstr "内部エラー"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: オプション '--%s' �引数を�る�������ん\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: オプション '--%s' を�識����ん\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: オプション '-W %s' �曖昧��\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: オプション '-W %s' �引数を�る�������ん\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: オプション '-W %s' ��引数�必���\n"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "PATTERN �デフォルト��基本正�表� (BRE) ��。\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "'egrep' � 'grep -E' を�味���。 'fgrep' � 'grep -F' を�味���。\n"
+#~ "'egrep' ��� 'fgrep' �よる直接起動�廃止予定��。\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "lseek �失敗����"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "繰返�回数�終了�����ん"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "�正�形��繰り返�回数��"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "PATTERN �拡張正�表� (ERE) ��。\n"
+
+#~ msgid "Invocation as `egrep' is deprecated; use `grep -E' instead.\n"
+#~ msgstr ""
+#~ "`egrep' �������起動�廃止予定��。代�り� `grep -E' を使用���"
+#~ "���。\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "PATTERN �改行�区切られ�固定文字列�組��。\n"
+
+#~ msgid "Invocation as `fgrep' is deprecated; use `grep -F' instead.\n"
+#~ msgstr ""
+#~ "`fgrep' �������起動�廃止予定��。代�り� `grep -F' を使用���"
+#~ "���。\n"
+
+#~ msgid "writing output"
+#~ msgstr "出力�書込�"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "GNU Grep �ホームページ: <%s>\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s � %s パターン構文�時��使用����"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "GREP_COLORS=\"%s\" �����\"%s\" ��値�代入 (\"=...\") �必���。ス"
+#~ "キップ����"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "GREP_COLORS=\"%s\" �����\"%s\" �真�値��り値を代入 (\"=%s\") �る"
+#~ "�������ん。スキップ����"
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "GREP_COLORS=\"%s\" ���� \"%s\" � %s ��"
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "GREP_COLORS=\"%s\" �形��誤り��る��処�を中止����。残り�部分文"
+#~ "字列� \"%s\" ��"
+
+#~ msgid "ARGP_HELP_FMT: %s value is less than or equal to %s"
+#~ msgstr "ARGP_HELP_FMT: %s �値� %s �値以下��"
+
+#~ msgid "%.*s: ARGP_HELP_FMT parameter requires a value"
+#~ msgstr "%.*s: ARGP_HELP_FMT パラメータ��値�必���"
+
+#~ msgid "%.*s: ARGP_HELP_FMT parameter must be positive"
+#~ msgstr "%.*s: ARGP_HELP_FMT パラメータ�正�値���れ�����ん"
+
+#~ msgid "%.*s: Unknown ARGP_HELP_FMT parameter"
+#~ msgstr "%.*s: �明� ARGP_HELP_FMT パラメータ"
+
+#~ msgid "Garbage in ARGP_HELP_FMT: %s"
+#~ msgstr "ARGP_HELP_FMT 中�����り��: %s"
+
+#~ msgid ""
+#~ "Mandatory or optional arguments to long options are also mandatory or "
+#~ "optional for any corresponding short options."
+#~ msgstr ""
+#~ "長�形��オプション�必須���任��引数���れ�対応�る短�形��オプ"
+#~ "ション�も�様�必須���任���。"
+
+#~ msgid "Usage:"
+#~ msgstr "使用法:"
+
+#~ msgid "  or: "
+#~ msgstr "���: "
+
+#~ msgid " [OPTION...]"
+#~ msgstr " [OPTION...]"
+
+#~ msgid "Report bugs to %s.\n"
+#~ msgstr "�グを発見��ら %s 宛�報告��下��。\n"
+
+#~ msgid "give this help list"
+#~ msgstr "��ヘルプを表示�る"
+
+#~ msgid "give a short usage message"
+#~ msgstr "短�使用方法を表示�る"
+
+#~ msgid "NAME"
+#~ msgstr "��"
+
+#~ msgid "set the program name"
+#~ msgstr "プログラム�を設定�る"
+
+#~ msgid "SECS"
+#~ msgstr "SECS"
+
+#~ msgid "hang for SECS seconds (default 3600)"
+#~ msgstr "SECS 秒��ング (デフォルト 3600)"
+
+#~ msgid "print program version"
+#~ msgstr "プログラム��ージョンを表示�る"
+
+#~ msgid "(PROGRAM ERROR) No version known!?"
+#~ msgstr "(プログラムエラー) �明��ージョン!?"
+
+#~ msgid "%s: Too many arguments\n"
+#~ msgstr "%s: 引数�多����\n"
+
+#~ msgid "(PROGRAM ERROR) Option should have been recognized!?"
+#~ msgstr "(プログラムエラー) オプション��識�れ��る����!?"
+
+#~ msgid "cannot find a temporary directory, try setting $TMPDIR"
+#~ msgstr "一時ディレクトリを作�����ん。 $TMPDIR を設定��������"
+
+#~ msgid "cannot create a temporary directory using template \"%s\""
+#~ msgstr "テンプレート \"%s\" を使用��一時ディレクトリを作�����ん"
+
+#~ msgid "cannot remove temporary file %s"
+#~ msgstr "一時ファイル %s を削除����ん"
+
+#~ msgid "cannot remove temporary directory %s"
+#~ msgstr "一時ディレクトリ %s を削除����ん"
+
+#~ msgid "error closing file"
+#~ msgstr "ファイルクローズエラー"
+
+#~ msgid "preserving permissions for %s"
+#~ msgstr "%s �パーミッションを�存�����"
+
+#~ msgid "error while opening \"%s\" for reading"
+#~ msgstr "\"%s\"を読込む��開���る際�エラー�発生����"
+
+#~ msgid "cannot open backup file \"%s\" for writing"
+#~ msgstr "書込�用�ックアップファイル\"%s\"を開��������ん"
+
+#~ msgid "error reading \"%s\""
+#~ msgstr "\"%s\"�読込�中�エラー�発生����"
+
+#~ msgid "error writing \"%s\""
+#~ msgstr "\"%s\"�書込�中�エラー�発生����"
+
+#~ msgid "error after reading \"%s\""
+#~ msgstr "\"%s\"�読込�後�エラー�発生����"
+
+#~ msgid "fdopen() failed"
+#~ msgstr "fdopen()�失敗����"
+
+#~ msgid "C# compiler not found, try installing pnet"
+#~ msgstr "C# コンパイラ�見�り��ん。pnet をインストール��������"
+
+#~ msgid "C# virtual machine not found, try installing pnet"
+#~ msgstr "C# 仮想マシン�見��り��ん。pnet をインストール��������"
+
+#~ msgid "%s subprocess failed"
+#~ msgstr "%s サブプロセス�失敗����"
+
+#~ msgid "regular empty file"
+#~ msgstr "通常�空ファイル"
+
+#~ msgid "regular file"
+#~ msgstr "通常ファイル"
+
+#~ msgid "directory"
+#~ msgstr "ディレクトリ"
+
+#~ msgid "block special file"
+#~ msgstr "ブロックスペシャルファイル"
+
+#~ msgid "character special file"
+#~ msgstr "キャラクタスペシャルファイル"
+
+#~ msgid "fifo"
+#~ msgstr "fifo"
+
+#~ msgid "symbolic link"
+#~ msgstr "シンボリックリンク"
+
+#~ msgid "socket"
+#~ msgstr "ソケット"
+
+#~ msgid "message queue"
+#~ msgstr "メッセージキュー"
+
+#~ msgid "semaphore"
+#~ msgstr "セマフォ"
+
+#~ msgid "shared memory object"
+#~ msgstr "共有メモリオブジェクト"
+
+#~ msgid "typed memory object"
+#~ msgstr "型付メモリオブジェクト"
+
+#~ msgid "weird file"
+#~ msgstr "�明�ファイル"
+
+#~ msgid "Address family for hostname not supported"
+#~ msgstr "ホスト��対�る Address family �サ�ート�れ����ん"
+
+#~ msgid "Temporary failure in name resolution"
+#~ msgstr "��解決�一時的�失敗����"
+
+#~ msgid "Bad value for ai_flags"
+#~ msgstr "ai_flags �対�る誤��値��"
+
+#~ msgid "Non-recoverable failure in name resolution"
+#~ msgstr "��解決�リカ�リ����失敗�発生����"
+
+#~ msgid "ai_family not supported"
+#~ msgstr "ai_family �サ�ート�れ����ん"
+
+#~ msgid "Memory allocation failure"
+#~ msgstr "メモリ�置�失敗����"
+
+#~ msgid "No address associated with hostname"
+#~ msgstr "ホスト��アドレス�割り当�られ����ん"
+
+#~ msgid "Name or service not known"
+#~ msgstr "�����サービス��明��"
+
+#~ msgid "Servname not supported for ai_socktype"
+#~ msgstr "ai_socktype �対�� Servname �サ�ート�れ����ん"
+
+#~ msgid "ai_socktype not supported"
+#~ msgstr "ai_socktype �サ�ート�れ����ん"
+
+#~ msgid "System error"
+#~ msgstr "システムエラー"
+
+#~ msgid "Argument buffer too small"
+#~ msgstr "引数�ッファ�������"
+
+#~ msgid "Processing request in progress"
+#~ msgstr "�求�れ�処��実行中��"
+
+#~ msgid "Request canceled"
+#~ msgstr "�求�キャンセル�れ���"
+
+#~ msgid "Request not canceled"
+#~ msgstr "�求�キャンセル�れ��ん���"
+
+#~ msgid "All requests done"
+#~ msgstr "�����求�完了����"
+
+#~ msgid "Interrupted by a signal"
+#~ msgstr "シグナル割り込��発生����"
+
+#~ msgid "Parameter string not correctly encoded"
+#~ msgstr "パラメーター文字列�正��エンコード�れ����ん"
+
+#~ msgid "Unknown error"
+#~ msgstr "�明�エラー"
+
+#~ msgid "invalid source_version argument to compile_java_class"
+#~ msgstr "compile_java_class �� source_version 引数�無効��"
+
+#~ msgid "invalid target_version argument to compile_java_class"
+#~ msgstr "compile_java_class �� target_version 引数�無効��"
+
+#~ msgid "failed to create \"%s\""
+#~ msgstr "\"%s\" �作��失敗����"
+
+#~ msgid "error while writing \"%s\" file"
+#~ msgstr "\"%s\" ファイル�書�込�中�エラー�発生����"
+
+#~ msgid "Java compiler not found, try installing gcj or set $JAVAC"
+#~ msgstr ""
+#~ "Java コンパイラ�見��り��ん。 gcj をインストール�る�����t "
+#~ "$JAVAC を設定��������"
+
+#~ msgid "Java virtual machine not found, try installing gij or set $JAVA"
+#~ msgstr ""
+#~ "Java 仮想マシン�見��り��ん。 gij をインストール�る����� $JAVA "
+#~ "を設定��������"
+
+#~ msgid "%s subprocess I/O error"
+#~ msgstr "%s サブプロセス I/O エラー"
+
+#~ msgid "cannot change permissions of %s"
+#~ msgstr "%s �パーミッションを変更����ん"
+
+#~ msgid "cannot create directory %s"
+#~ msgstr "ディレクトリ %s を作�����ん"
+
+#~ msgid "Failed to open /dev/zero for read"
+#~ msgstr "/dev/zeroを読込�用�開���ん"
+
+#~ msgid "creation of reading thread failed"
+#~ msgstr "読�込�スレッド�作��失敗����"
+
+#~ msgid "cannot set up nonblocking I/O to %s subprocess"
+#~ msgstr "%s �プロセス��ブロック I/O を設定����ん"
+
+#~ msgid "communication with %s subprocess failed"
+#~ msgstr "%s �プロセス��通信�失敗����"
+
+#~ msgid "write to %s subprocess failed"
+#~ msgstr "%s �プロセス��書�込��失敗����"
+
+#~ msgid "read from %s subprocess failed"
+#~ msgstr "%s �プロセス�ら�読�込��失敗����"
+
+#~ msgid "subprocess %s terminated with exit code %d"
+#~ msgstr "�プロセス %s �終了コード %d �終了����"
+
+#~ msgid "creation of threads failed"
+#~ msgstr "スレッド�作��失敗����"
+
+#~ msgid "%s subprocess terminated with exit code %d"
+#~ msgstr "%s �プロセス�終了コード %d �終了����"
+
+#~ msgid "cannot create pipe"
+#~ msgstr "パイプを作�����ん"
+
+#~ msgid "^[yY]"
+#~ msgstr "^[yY]"
+
+#~ msgid "^[nN]"
+#~ msgstr "^[nN]"
+
+#~ msgid "setting permissions for %s"
+#~ msgstr "%s �パーミッションを設定���"
+
+#~ msgid "Hangup"
+#~ msgstr "Hangup"
+
+#~ msgid "Interrupt"
+#~ msgstr "割り込�"
+
+#~ msgid "Quit"
+#~ msgstr "終了"
+
+#~ msgid "Illegal instruction"
+#~ msgstr "Illegal instruction"
+
+#~ msgid "Trace/breakpoint trap"
+#~ msgstr "Trace/breakpoint trap"
+
+#~ msgid "Aborted"
+#~ msgstr "中止"
+
+#~ msgid "Floating point exception"
+#~ msgstr "浮動�数点例外"
+
+#~ msgid "Killed"
+#~ msgstr "強制終了"
+
+#~ msgid "Bus error"
+#~ msgstr "�スエラー"
+
+#~ msgid "Segmentation fault"
+#~ msgstr "Segmentation fault"
+
+#~ msgid "Broken pipe"
+#~ msgstr "Broken pipe"
+
+#~ msgid "Alarm clock"
+#~ msgstr "Alarm clock"
+
+#~ msgid "Terminated"
+#~ msgstr "Terminated"
+
+#~ msgid "Urgent I/O condition"
+#~ msgstr "緊急 I/O 状態"
+
+#~ msgid "Stopped (signal)"
+#~ msgstr "�止 (シグナル)"
+
+#~ msgid "Stopped"
+#~ msgstr "�止"
+
+#~ msgid "Continued"
+#~ msgstr "継続"
+
+#~ msgid "Child exited"
+#~ msgstr "�プロセス終了"
+
+#~ msgid "Stopped (tty input)"
+#~ msgstr "�止 (tty 入力)"
+
+#~ msgid "Stopped (tty output)"
+#~ msgstr "�止 (tty 出力)"
+
+#~ msgid "I/O possible"
+#~ msgstr "I/O �能"
+
+#~ msgid "CPU time limit exceeded"
+#~ msgstr "CPU時間制�を超�����"
+
+#~ msgid "File size limit exceeded"
+#~ msgstr "ファイルサイズ制�を超�����"
+
+#~ msgid "Virtual timer expired"
+#~ msgstr "仮想タイマー�終了����"
+
+#~ msgid "Profiling timer expired"
+#~ msgstr "プロファイリングタイマー�終了����"
+
+#~ msgid "Window changed"
+#~ msgstr "Window �変更�れ���"
+
+#~ msgid "User defined signal 1"
+#~ msgstr "ユーザー定義シグナル1"
+
+#~ msgid "User defined signal 2"
+#~ msgstr "ユーザー定義シグナル2"
+
+#~ msgid "EMT trap"
+#~ msgstr "EMT トラップ"
+
+#~ msgid "Bad system call"
+#~ msgstr "間���システムコール"
+
+#~ msgid "Stack fault"
+#~ msgstr "スタックエラー"
+
+#~ msgid "Information request"
+#~ msgstr "情報�求"
+
+#~ msgid "Power failure"
+#~ msgstr "電�エラー"
+
+#~ msgid "Resource lost"
+#~ msgstr "リソース�無��り���"
+
+#~ msgid "error writing to a closed pipe or socket"
+#~ msgstr "閉��パイプ���ソケット��書�込��エラー�発生����"
+
+#~ msgid "Real-time signal %d"
+#~ msgstr "リアルタイムシグナル %d"
+
+#~ msgid "Unknown signal %d"
+#~ msgstr "�明�シグナル %d"
+
+#~ msgid "iconv function not usable"
+#~ msgstr "iconv 関数�使���ん"
+
+#~ msgid "iconv function not available"
+#~ msgstr "iconv 関数�有効���り��ん"
+
+#~ msgid "character out of range"
+#~ msgstr "範囲外�文字"
+
+#~ msgid "cannot convert U+%04X to local character set"
+#~ msgstr "U+%04X をローカル文字セット�変�����ん"
+
+#~ msgid "cannot convert U+%04X to local character set: %s"
+#~ msgstr "U+%04X をローカル文字セット %s �変�����ん"
+
+#~ msgid "invalid spec"
+#~ msgstr "無効�指定"
+
+#~ msgid "unable to display error message"
+#~ msgstr "エラーメッセージを表示����ん"
+
+#~ msgid "_open_osfhandle failed"
+#~ msgstr "_open_osfhandle �失敗����"
+
+#~ msgid "cannot restore fd %d: dup2 failed"
+#~ msgstr "ファイル記述� (fd) %d をリストア����ん: dup2 �失敗����"
+
+#~ msgid "%s subprocess"
+#~ msgstr "%s �プロセス"
+
+#~ msgid "%s subprocess got fatal signal %d"
+#~ msgstr "%s �プロセス�致命的�シグナル %d を�信����"
+
+#~ msgid "stdin"
+#~ msgstr "標準入力"
+
+#~ msgid "stdout"
+#~ msgstr "標準出力"
+
+#~ msgid "stderr"
+#~ msgstr "標準エラー出力"
+
+#~ msgid "unknown stream"
+#~ msgstr "�明�ストリーム"
+
+#~ msgid "failed to reopen %s with mode %s"
+#~ msgstr "%s をモード %s ��度開����失敗����"
+
+#~ msgid "string comparison failed"
+#~ msgstr "文字列�比較�失敗����"
+
+#~ msgid "Set LC_ALL='C' to work around the problem."
+#~ msgstr "�題を回��る��� LC_ALL='C' を指定������."
+
+#~ msgid "The strings compared were %s and %s."
+#~ msgstr "比較��文字列� %s � %s ��."
+
+#~ msgid "cannot perform formatted output"
+#~ msgstr "書�設定を行��出力を実行�る�������ん"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: �正�オプション -- %c\n"
+
+#~ msgid "block size"
+#~ msgstr "ブロックサイズ"
+
+#~ msgid "%s exists but is not a directory"
+#~ msgstr "%s �存在����ディレクトリ���り��ん"
+
+#~ msgid "cannot change owner and/or group of %s"
+#~ msgstr "%s �オーナー�グループを変更����ん"
+
+#~ msgid "cannot chdir to directory %s"
+#~ msgstr "ディレクトリ %s �移動����ん"
+
+#~ msgid "cannot get the login group of a numeric UID"
+#~ msgstr "数字�UID�ログイングループを�得����ん"
+
+#~ msgid ""
+#~ "\n"
+#~ "This is free software.  You may redistribute copies of it under the terms "
+#~ "of\n"
+#~ "the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.\n"
+#~ "There is NO WARRANTY, to the extent permitted by law.\n"
+#~ "\n"
+#~ msgstr ""
+#~ "\n"
+#~ "本プログラム�フリーソフトウェア��. GNU一般公有使用許諾\n"
+#~ "<http://www.gnu.org/licenses/gpl.html> �定�られ��項�下�本プログラ\n"
+#~ "ム�コピーを��布����. �切�法��る�り����全��無�証��.\n"
+#~ "\n"
+
+#~ msgid "out of memory"
+#~ msgstr "メモリー����り���"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "使用法: %s [オプション]‥‥ パターン [ファイル] ‥‥\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE\n"
+#~ "                            TYPE is 'binary', 'text', or 'without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories\n"
+#~ "                            ACTION is 'read', 'recurse', or 'skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets\n"
+#~ "                            ACTION is 'read' or 'skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=PATTERN     files that match PATTERN will be examined\n"
+#~ "      --exclude=PATTERN     files that match PATTERN will be skipped.\n"
+#~ "      --exclude-from=FILE   files that match PATTERN in FILE will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match only print FILE names containing no match\n"
+#~ "  -l, --files-with-matches  only print FILE names containing matches\n"
+#~ "  -c, --count               only print a count of matching lines per "
+#~ "FILE\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "出力制御:\n"
+#~ "  -m, --max-count=回数      指定��一致回数�後�終了�る\n"
+#~ "  -b, --byte-offset         出力行��イト・オフセットも表示�る\n"
+#~ "  -n, --line-number         出力行�行数も表示�る\n"
+#~ "      --line-buffered       行���出力を掃�出�\n"
+#~ "  -H, --with-filename       �一致�������ファイル�も表示�る\n"
+#~ "  -h, --no-filename         ��ファイル�を出力�ら抑止�る\n"
+#~ "      --label=ラベル        ラベルをファイル����標準出力�表示�る\n"
+#~ "  -o, --only-matching       パターン�一致�る行�部分��を示�\n"
+#~ "  -q, --quiet, --silent     通常�出力を���抑止�る\n"
+#~ "      --binary-files=型     �イナリー・ファイル�型。「binary�\n"
+#~ "                            「text�「without-match�を指定\n"
+#~ "  -a, --text                --binary-files=text���\n"
+#~ "  -I                        --binary-files=without-match���\n"
+#~ "  -d, --directories=�作    ディレクトリー���作\n"
+#~ "                            「read�(読込�)�「recurse�(�帰)�\n"
+#~ "                            「skip�(�略) ���れ�を指定\n"
+#~ "  -D, --devices=�作        デ�イス�FIFO�ソケット���作\n"
+#~ "                            「read��「skip�を指定\n"
+#~ "  -R, -r, --recursive       --directories=recurse���\n"
+#~ "      --include=パターン    パターン�一致�るファイルを検査�る\n"
+#~ "      --exclude=パターン    パターン�一致�るファイルを�略�る。\n"
+#~ "      --exclude-from=ファイル 指定��ファイル内�パターン�\n"
+#~ "                            一致�るファイルを�略�る。\n"
+#~ "  -L, --files-without-match 一致�����ファイル���を表示�る\n"
+#~ "  -l, --files-with-matches  一致��ファイル���を表示�る\n"
+#~ "  -c, --count               ファイル���一致��行数��を表示�る\n"
+#~ "  -Z, --null                ファイル��後��ヌル値��イトを表示\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Report bugs to <bug-gnu-utils@gnu.org>.\n"
+#~ msgstr ""
+#~ "\n"
+#~ "�グ� <bug-gnu-utils@gnu.org> �報告������。\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "未知�ディレクトリー�作��"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+#~ msgstr ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions. There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "�れ�フリー・ソフトウェア��。複製�関�る�件�ソースを�覧����。\n"
+#~ "�れ�無�証��。営利目的や�る特定�目的�む���正�も��も�り��"
+#~ "ん。\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "-P�-z�オプション�組�������ん"
diff --git a/src/grep/po/ko.gmo b/src/grep/po/ko.gmo
new file mode 100644
index 0000000..276dc49
--- /dev/null
+++ b/src/grep/po/ko.gmo
diff --git a/src/grep/po/ko.po b/src/grep/po/ko.po
new file mode 100644
index 0000000..124fa63
--- /dev/null
+++ b/src/grep/po/ko.po
@@ -0,0 +1,749 @@
+# Korean messages for GNU grep.
+# This file is distributed under the same license as the grep package.
+# Copyright (C) 1996, 1997, 2019 Free Software Foundation, Inc.
+# Bang Jun-Young <bangjy@geocities.com>, 1996-1997.
+# Seong-ho Cho <darkcircle.0426@gmail.com>, 2019-2021.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-10 10:17+0900\n"
+"Last-Translator: Seong-ho Cho <darkcircle.0426@gmail.com>\n"
+"Language-Team: Korean <translation-team-ko@googlegroups.com>\n"
+"Language: ko\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: Poedit 2.3.1\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "%2$s 대� 잘못� �� %1$s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "%2$s 대� 모호한 �� %1$s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "유효한 ��는 다�과 같습니다:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "프로그램 오류"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "스� 오버플로우"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "기� 오류"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "�� 맞지 않는 [ 괄호"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "잘못� 문� �래스"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "문� �래스 표기 방�� [:space:]가 아닌 [[:space:]]입니다"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "�나지 않� \\ �스케�프 문�"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "잘못� \\{\\} 내용"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "정규 표현�� 너무 �니다"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "�� 맞지 않는 ( 괄호"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "문법� 지정하지 않았습니다"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "�� 맞지 않는 ) 괄호"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "알 수 없는 시스템 오류"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: '%s%s' 옵션� 모호합니다\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: '%s%s' 옵션� 모호합니다 가능한 값:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: ��할 수 없는 옵션 '%s%s'\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: '%s%s' 옵션� ��를 허용하지 않습니다\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: '%s%s' 옵션� ��가 필요합니다\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: 잘못� 옵션 -- '%c'\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: � 옵션� ��가 필요합니다 -- '%c'\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "메모리가 바닥남"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "현재 작업 디렉터리를 기�할 수 없습니다"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "초기 작업 디렉터리 반환� 실패했습니다"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "�스트/바�너리 모드 파� 서술� 설정� 실패했습니다"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "`"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "성공"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "�치 항목 없�"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "잘못� 정규 표현�"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "잘못� 조합 문�"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "잘못� 문� �래스 �름"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "백 슬래시 문�가 따�옴"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "잘못� 후위 참조"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "�치하지 않는 [, [^, [:, [., [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "�치하지 않는 ( �는 \\( 괄호"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "�치하지 않는 \\{ 괄호"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "잘못� \\{\\} 내용"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "잘못� 범위 �"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "메모리가 바닥남"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "잘못� 선행 정규 표현�"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "정규 표현� 마� 표현� 앞서있습니다"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "정규 표현�� 너무 �니다"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "�치하지 않는 ) �는 \\) 괄호"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "�전 정규 표현� 없�"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "%s�(가) 패키징 함 (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "%s�(가) 패키징 함\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"GPLv3+ ��선스: GNU GPL 버전 3 �� <%s>.\n"
+"� 프로그램� �유 소프트웨어입니다: �유롭게 바꾸고 재배�할 수 있습니다.\n"
+"법률� 허용하는 모든 범위내� 보�� 없습니다.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "%s�(가) 작성함.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "%s와(과) %s�(가) 작성함.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "%s와(과) %s, %s�(가) 작성함.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"%s와(과) %s, %s,\n"
+"%s�(가) 작성함.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"%s와(과) %s, %s,\n"
+"%s, %s�(가) 작성함.\n"
+"\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"%s와(과) %s, %s,\n"
+"%s, %s, %s�(가) 작성함.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"%s와(과) %s, %s,\n"
+"%s, %s, %s,\n"
+"%s�(가) 작성함.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"%s와(과) %s, %s,\n"
+"%s, %s, %s,\n"
+"%s, %s�(가) 작성함.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"%s와(과) %s, %s,\n"
+"%s, %s, %s,\n"
+"%s, %s, %s�(가) 작성함.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"%s, %s, %s,\n"
+"%s, %s, %s,\n"
+"%s, %s, %s\n"
+"외 다수가 작성함.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "버그 보고 주소: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "%s 버그 보고 주소: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "%s 홈 페�지: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "GNU 소프트웨어 활용 �반 �움�: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(표준 입력)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "잘못� 내용 길� ��"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "입력 행 수를 세기� 너무 많습니다"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: 바�너리 파� �치함"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: 경고: 재귀 디렉터리 순환"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: 입력 파�� 출력 대��기� 합니다"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "사용법: %s [<옵션>]... <패턴> [<파�>]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "�세한 정보는 '%s --help'를 입력하십시오.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "� <파�>�서 <패턴>� �치하는 행� 검색합니다.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"예제: %s -i 'hello world' menu.h main.c\n"
+"<패턴>�는 개행 문�로 구분한 여러 패턴� 넣� 수 있습니다.\n"
+"\n"
+"패턴 선� � 해�:\n"
+"\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     <패턴>� 확장 정규 표현�입니다\n"
+"  -F, --fixed-strings       <패턴>� 단순 문�열입니다\n"
+"  -G, --basic-regexp        <패턴>� 기본 정규 표현�입니다\n"
+"  -P, --perl-regexp         <패턴>� 펄 정규 표현�입니다\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=<패턴>       �치하는 부분� 찾� <패턴> 기준� 활용합니다\n"
+"  -f, --file=<파�>         <파�>�서 <패턴>� �치하는 부분� 취합니다\n"
+"  -i, --ignore-case         대소문� 구분� 무시합니다\n"
+"      --no-ignore-case      대소문� 구분� 유지합니다(기본값)\n"
+"  -w, --word-regexp         주어진 단어와 완벽하게 �치하는 부분만\n"
+"  -x, --line-regexp         주어진 행 내용과 완벽하게 �치하는 부분만\n"
+"  -z, --null-data           ��터 행� �� 개행 문�가 아닌 0바�트 값으로 "
+"�납니다\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"기타:\n"
+"  -s, --no-messages         오류 메시지 출력� �략합니다\n"
+"  -v, --invert-match        조건� �치하지 않는 행� 선�합니다\n"
+"  -V, --version             버전 정보를 나타내고 빠져 나갑니다\n"
+"      --help                � �움� �스트를 나타내고 빠져 나갑니다\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"출력 제어:\n"
+"  -m, --max-count=<횟수>    <횟수> 만� 행� 찾아내고 나면 멈춤\n"
+"  -b, --byte-offset         출력 행� 바�트 오프셋� 출력합니다\n"
+"  -n, --line-number         출력 행� 행 번호를 출력합니다\n"
+"      --line-buffered       모든 행� 출력� 플러싱합니다\n"
+"  -H, --with-filename       출력 행� 파� �름� 출력합니다\n"
+"  -h, --no-filename         출력 행 앞부분� 파� �름 표시를 �략합니다 \n"
+"      --label=<레�블>      <레�블>� 표준 입력 앞부분� 파� �름으로 사용"
+"합니다\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       조건� �치하는 행� 비어있지 않� 결과만 나타냅"
+"니다\n"
+"  -q, --quiet, --silent     모든 �반 출력 �작� �략합니다\n"
+"      --binary-files=<형�>   바�너리 파�� 지정한 <형�>으로 간주합니다\n"
+"                            <형�> 값� 'binary', 'text', 'without-match' 중 "
+"하나입니다\n"
+"  -a, --text                --binary-files=text 옵션과 ��\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        --binary-files=without-match 옵션과 ��\n"
+"  -d, --directories=<�작>  디렉터리 처리 방�\n"
+"                            <�작> 값� 'read', 'recurse', 'skip' 중 하나입니"
+"다\n"
+"  -D, --devices=<�작>      장치, FIFO, 소켓 처리 방�\n"
+"                            <�작> 값� 'read', 'skip' 중 하나입니다\n"
+"  -r, --recursive           --directories=recurse와 유사\n"
+"  -R, --dereference-recursive  위 옵션과 비슷하지만 모든 심볼릭 ��를 따�갑"
+"니다\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=<글롭>        <글롭>(파� 패턴)� �치하는 파�만 검색합니"
+"다\n"
+"      --exclude=<글롭>        <글롭>� �치하는 파�� 건너�니다\n"
+"      --exclude-from=<파�>   <파�>과 파� 패턴� �치하는 파�� 건너�니"
+"다\n"
+"      --exclude-dir=<글롭>    <글롭>과 �치하는 디렉터리를 건너�니다\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match �치하는 행� 없으면 <파�>� �름만 출력합니다\n"
+"  -l, --files-with-matches  �치하는 행� 있는 <파�>� �름만 출력합니다\n"
+"  -c, --count               <파�>� �치하는 행 갯수만 출력합니다\n"
+"  -T, --initial-tab         (필요한 경우) 행 별로 탭� 표시합니다\n"
+"  -Z, --null                <파�> �름 뒤� 0 바�트 값� 출력합니다\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"문맥 제어:\n"
+"  -B, --before-context=<갯수>  <갯수> 줄 수만� 출력 내용� 앞부분� 출력합니"
+"다\n"
+"  -A, --after-context=<갯수>   <갯수> 줄 수만� 출력 내용� 뒷부분� 출력합니"
+"다\n"
+"  -C, --context=<갯수>         <갯수> 줄 수 만� 출력 내용 앞 뒤 부분� 모� "
+"출력합니다 \n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      --context=<갯수>와 ��\n"
+"      --group-separator=<구분�>  문맥� �치하는 행� <구분�> 출력으로 구"
+"분\n"
+"      --no-group-separator  �치 문맥� 대한 구분�를 출력하지 않습니다\n"
+"      --color[=<시기>],\n"
+"      --colour[=<시기>]     �치하는 문�열 강조시 마커를 활용합니다\n"
+"                            <시기>� 값� 'always', 'never', 'auto' 중 하나입"
+"니다\n"
+"  -U, --binary              개행 문��서 CR 문�를 빼내지 않�(MSDOS/윈�"
+"ìš°)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"<파�> 값� '-' �면, 표준 입력� �습니다.  <파�>� 아무런 값� 없다면,\n"
+"재귀 �색 옵션� 주었� 경우 현재 디렉터리를,  그렇지 않으면 '-' 값� 설정"
+"함\n"
+"으로 가정합니다. <파�> 갯수가 한개� 경우 -h 옵션� 준 것으로 가정합니다.\n"
+"조건 �치 행� 나오면, �내기 �태 값� 0�, 그렇지 않으면 1� 반환합니다.\n"
+"오류가 나타났거나 -q 옵션� 주지 않았다면, 2를 반환합니다.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "비� 기준� 중복 지정했습니다"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"--disable-perl-regexp 빌드�서는 Perl 문�열 �치 기능� 지�하지 않습니다"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "잘못� 비� 기준 %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "알 수 없는 장치 방�"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "경고: --unix-byte-offsets (-u) 옵션� 오래�었습니다"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "잘못� 최대 갯수"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "알 수 없는 바�너리 파� 형�"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Mike Haertel 등� 작성함. 기타 작성� 정보는\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS> ��를 참고하십시오."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "PCRE JIT 스�� 메모리 할당� 실패했습니다"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P 유니바�트, UTF-8 로캘만 지�합니다"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "-P 옵션� 단� 패턴만 지�합니다"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "내부 오류 (나타나면 안�)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "PCRE 행 길� 한계 초과"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: 메모리가 바닥남"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: PCRE JIT 스� 가� 참"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: PCRE 후위 추� 한계 초과"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: PCRE 후위 추� 한계 초과"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: 내부 PCRE 오류: %d"
diff --git a/src/grep/po/ky.gmo b/src/grep/po/ky.gmo
new file mode 100644
index 0000000..1cb818e
--- /dev/null
+++ b/src/grep/po/ky.gmo
diff --git a/src/grep/po/ky.po b/src/grep/po/ky.po
new file mode 100644
index 0000000..9d10b2c
--- /dev/null
+++ b/src/grep/po/ky.po
@@ -0,0 +1,891 @@
+# Translation of grep-2.5.3 messages to Kirghiz/Kyrgyz
+# Copyright (C) 2007 Free Software Foundation, Inc.
+# This file is distributed under the same license as the GREP package.
+# Azilet Beishenaliev <aziletb@gmail.com>, 2007.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 2.5.3\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2007-09-01 17:27+0100\n"
+"Last-Translator: Azilet Beishenaliev <aziletb@gmail.com>\n"
+"Language-Team: Kirghiz <i18n-team-ky-kyrgyz@lists.sourceforge.net>\n"
+"Language: ky\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+"X-Poedit-Language: Kyrgyz\n"
+"X-Poedit-Country: KYRGYZSTAN\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr ""
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr ""
+
+#: lib/dfa.c:896
+#, fuzzy
+msgid "unbalanced ["
+msgstr "[ - мунун уйкашы жок"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr ""
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr ""
+
+# escape - кыргызча???
+#: lib/dfa.c:1210
+#, fuzzy
+msgid "unfinished \\ escape"
+msgstr "Бүтпөй калган ��кейп \\"
+
+#: lib/dfa.c:1371
+#, fuzzy
+msgid "invalid content of \\{\\}"
+msgstr "мак�имум �ан жарабайт"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr ""
+
+#: lib/dfa.c:1858
+#, fuzzy
+msgid "unbalanced ("
+msgstr "( - мунун уйкашы жок"
+
+# кай�ы �интак�и�? грептин шаблонубу?
+#: lib/dfa.c:1975
+#, fuzzy
+msgid "no syntax specified"
+msgstr "Синтак�и� аталган жок"
+
+#: lib/dfa.c:1986
+#, fuzzy
+msgid "unbalanced )"
+msgstr ") - мунун уйкашы жок"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Белги�из �и�тема ката�ы"
+
+#: lib/getopt.c:278
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: `%s' опци��ы так �ме�\n"
+
+#: lib/getopt.c:284
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: `%s' опци��ы так �ме�\n"
+
+#: lib/getopt.c:319
+#, fuzzy, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: бул опци� түшүнүк�үз `%c%s'\n"
+
+#: lib/getopt.c:345
+#, fuzzy, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: `%c%s' опци��ы менен аргумент колдонулбайт\n"
+
+#: lib/getopt.c:360
+#, fuzzy, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: `%s' опци��ы менен аргумент болуш керек\n"
+
+#: lib/getopt.c:621
+#, fuzzy, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: жарак�ыз опци� -- %c\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, fuzzy, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: бул опци�нын аргументи болуш керек -- %c\n"
+
+# Пам�тты �мне дейбиз ��? ;)
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "пам�ть жетпей калды"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr ""
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr ""
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "\""
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "\""
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr ""
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr ""
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr ""
+
+# Пам�тты �мне дейбиз ��? ;)
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Пам�ть жетпей калды"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ""
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr ""
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr ""
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr ""
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr ""
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"Каталарды бул жерге жибергиле <%s>.\n"
+
+#: lib/version-etc.c:251
+#, fuzzy, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+"\n"
+"Каталарды бул жерге жибергиле <%s>.\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr ""
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(�тандарт кирүү)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "контек�т узундугу жарабайт"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "берилген данныйлардын �аны �аналбай турганча көп"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "Экилик форматтагы %s файлы уйкашат\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "бирибирине кирген папка айлампа�ы бар"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr ""
+
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Колдонулушу: %s [ОПЦИЯ]... Ш�БЛО� [Ф�ЙЛ]...\n"
+
+#: src/grep.c:1963
+#, fuzzy, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Толук маалымат үчүн `%s --help' деп жазгыла.\n"
+
+#: src/grep.c:1969
+#, fuzzy, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "�р Ф�ЙЛда же �тандарт кирүүдө Ш�БЛО�ду изде.\n"
+
+# выражение дегендин кыргызча�ын жазыш керек
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Ми�алы: %s -i '�алам дүйнө' menu.h main.c\n"
+"\n"
+"Регул�рдуу выражение тандоо жана маани�и:\n"
+
+# выражение - кыргызча�ын жаз!!!!
+#: src/grep.c:1975
+#, fuzzy, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     Ш�БЛО� кеңейтилген түрдөгү регул�рдуу выражение\n"
+"  -F, --fixed-strings       Ш�БЛО� ар �апта бир �өз болгон жыйын\n"
+"  -G, --basic-regexp        Ш�БЛО� негизги түрдөгү регул�рдуу выражение\n"
+"  -P, --perl-regexp         Ш�БЛО� Perl түрүндөгү регул�рдуу выражение\n"
+
+# выражение!!!!
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=Ш�БЛО�       Ш�БЛО�ду регул�рдуу выражение катары колдон\n"
+"  -f, --file=Ф�ЙЛ           Ш�БЛО� Ф�ЙЛдан алынат\n"
+"  -i, --ignore-case         тамгалардын чоң-кичине�и айырмаланбайт\n"
+"  -w, --word-regexp         Ш�БЛО� толук �өздөр менен гана уйкаштырылат\n"
+"  -x, --line-regexp         Ш�БЛО� толук �ап менен гана уйкаштырылат\n"
+"  -z, --null-data           дата(данный) �аптары 0 байты(EOL �ме�) менен "
+"бүтөт\n"
+
+#: src/grep.c:1989
+#, fuzzy, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Түрдүү:\n"
+"  -s, --no-messages         каталарды көр�өтпөйт\n"
+"  -v, --invert-match        уйкашы болбогон �аптар тандалат\n"
+"  -V, --version             вер�и� маалыматын көр�өтүп бүтүрөт\n"
+"      --help                бул жардам маалыматын көр�өтүп бүтүрөт\n"
+"      --mmap                мүмкүнчүлүк бол�о mmap кирүү�ү колдонулат\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"\n"
+"Контек�ти менен жыйынтык чыгаруу:\n"
+"  -B, --before-context=N    уйкаш болгон �аптан мурунку N �ап да көр�өтүлөт\n"
+"  -A, --after-context=N     уйкаш болгон �аптан кийинки N �ап да көр�өтүлөт\n"
+"  -C, --context=N           уйкаш болгон �аптан мурунку жана кийинки N �ап "
+"да көр�өтүлөт\n"
+"  -N                        --context=NUM менен бирдей\n"
+"      --color[=УЧУР],\n"
+"      --colour[=УЧУР]       уйкаш �өз кай�ы учурда айырмаландырылат\n"
+"                            УЧУР - `always'(ардайым), `never'(�ч качан) же "
+"`auto'(авто) боло алат.\n"
+"  -U, --binary              катар �оңунда (EOL) CR тамга�ы алынбайт (MSDOS)\n"
+"  -u, --unix-byte-offsets   орундарды CR жок болгондой кылып көр�өтөт "
+"(MSDOS)\n"
+"\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Ф�ЙЛ жазылба�а же Ф�ЙЛ - (тире) бол�о, �тандарт кирүү колдонулат. Экиден аз "
+"Ф�ЙЛ берилген бол�о -h опци��ы бар болот. Эгер �ап тандалган бол�о бүтүрүү "
+"�тату�у 0 болот, башка учурда 1; �герде ката чык�а жана -q опци��ы "
+"берилбеген бол�о бүтүрүү �тату�у 2 болот.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "уйкаштыруучуларда конфликттер табылды"
+
+#: src/grep.c:2101
+#, fuzzy
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Бул --disable-perl-regexp опци��ы менен жа�алган, -P опци��ы кошулуу �ме�"
+
+#: src/grep.c:2103
+#, fuzzy, c-format
+msgid "invalid matcher %s"
+msgstr "мак�имум �ан жарабайт"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "а�пап методу белги�из"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "мак�имум �ан жарабайт"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "белги�из файл түрү"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr ""
+
+#: src/pcresearch.c:143
+#, fuzzy
+msgid "the -P option only supports a single pattern"
+msgstr "-P опци��ы бир гана шаблон ала алат"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr ""
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr ""
+
+# Пам�тты �мне дейбиз ��? ;)
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "пам�ть жетпей калды"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr ""
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr ""
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr ""
+
+#, fuzzy, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "��кертүү: %s: %s\n"
+
+#, fuzzy
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: `--%s' опци��ы менен аргумент колдонулбайт\n"
+
+#, fuzzy
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: бул опци� түшүнүк�үз `--%s'\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: `-W %s' опци��ы так �ме�\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: `-W %s' опци��ы менен аргумент колдонулбайт\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: `%s' опци��ы менен аргумент болуш керек\n"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr ""
+#~ "Ш�БЛО�, алдынала тандалгандай, негизги түрдөгү регул�рдуу выражение "
+#~ "(BRE)\n"
+
+#, fuzzy
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "`egrep' деген `grep -E'.  `fgrep' деген `grep -F'.\n"
+#~ "`egrep' же `fgrep'  деп туз иштетуу колдонулбай калды.\n"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "кайталоо �аны толук �ме� жазылды"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "кайталоо �аны туура �ме� жазылды"
+
+#~ msgid "writing output"
+#~ msgstr "жооп жазыбатат"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "Ш�БЛО� кеңейтилген түрдөгү регул�рдуу выражение (ERE).\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "Ш�БЛО� ар �апта бир �өз болгон жыйын.\n"
+
+# line - �ап деп колдоном
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE;\n"
+#~ "                            TYPE is `binary', `text', or `without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories;\n"
+#~ "                            ACTION is `read', `recurse', or `skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+#~ "                            ACTION is `read' or `skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=FILE_PATTERN  search only files that match FILE_PATTERN\n"
+#~ "      --exclude=FILE_PATTERN  skip files and directories matching "
+#~ "FILE_PATTERN\n"
+#~ "      --exclude-from=FILE   skip files matching any file pattern from "
+#~ "FILE\n"
+#~ "      --exclude-dir=PATTERN directories that match PATTERN will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match print only names of FILEs containing no "
+#~ "match\n"
+#~ "  -l, --files-with-matches  print only names of FILEs containing matches\n"
+#~ "  -c, --count               print only a count of matching lines per "
+#~ "FILE\n"
+#~ "  -T, --initial-tab         make tabs line up (if needed)\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Жыйынтык берүү опци�лары:\n"
+#~ "  -m, --max-count=N         N жолу уйкаш табылгандан кийин токтойт\n"
+#~ "  -b, --byte-offset         жыйынтыкта байт жайгашуу�у көр�өтүлөт\n"
+#~ "  -n, --line-number         жыйынтыкта �аптын катар номери көр�өтүлөт\n"
+#~ "      --line-buffered       табылган ар �аптан улам жыйынтык көр�өтүлөт\n"
+#~ "  -H, --with-filename       ар уйкаш үчүн файлдын аты көр�өтүлөт\n"
+#~ "  -h, --no-filename         жыйынтыкта файлдын аты көр�өтүлбөйт\n"
+#~ "      --label=Т�МГ�         �тандарт кирүүдөн келгендерди Т�МГ� файлынан "
+#~ "деп көр�өтөт\n"
+#~ "  -o, --only-matching       �апта Ш�БЛО� менен уйкаш болгон жер �ле "
+#~ "көр�өтүлөт\n"
+#~ "  -q, --quiet, --silent     жазылатурган баардык жыйынтык көр�өтүлбөйт\n"
+#~ "      --binary-files=ТҮР   бинариктердин түрүн ТҮР катары алат\n"
+#~ "                            ТҮР - 'binary', 'text', же 'without-match' "
+#~ "боло алат\n"
+#~ "  -a, --text                --binary-files=text менен бирдей\n"
+#~ "  -I                        --binary-files=without-match менен бирдей\n"
+#~ "  -d, --directories=ACTION  папкаларды кандай иштетерин билдирет\n"
+#~ "                            ACTION - 'read', 'recurse', же 'skip' боло "
+#~ "алат\n"
+#~ "  -D, --devices=ACTION      а�паптарды, FIFO жана �океттерди кандай "
+#~ "иштетерин билдирет\n"
+#~ "                            ACTION - 'read' же 'skip' боло алат\n"
+#~ "  -R, -r, --recursive       --directories=recurse менен бирдей\n"
+#~ "      --include=Ф�ЙЛ_Ш�БЛО�У      Ф�ЙЛ_Ш�БЛО�У менен уйкашкан файлдар "
+#~ "гана каралат\n"
+#~ "      --exclude=Ф�ЙЛ_Ш�БЛО�У      Ф�ЙЛ_Ш�БЛО�У менен уйкашкан файл жана "
+#~ "папкалар каралбайт\n"
+#~ "      --exclude-from=Ф�ЙЛ   Ф�ЙЛдын ичиндеги шаблондор менен уйкашкан "
+#~ "файлдар каралбайт\n"
+#~ "      --exclude-dir=Ш�БЛО� Ш�БЛО� менен уйкашкан папкалар каралбайт\n"
+#~ "  -L, --files-without-match �ч уйкаш табылбаган файлдардын аты гана "
+#~ "көр�өтүлөт\n"
+#~ "  -l, --files-with-matches  уйкаш табылган файлдардын аты гана жазылат\n"
+#~ "  -c, --count               ар файлда табылган уйкаш �аны гана жазылат\n"
+#~ "  -T, --initial-tab         табтарды түздөйт (керек бол�о)\n"
+#~ "  -Z, --null                файлдын атынан кийин 0 байты жазылат\n"
+
+#~ msgid "Invocation as `egrep' is deprecated; use `grep -E' instead.\n"
+#~ msgstr ""
+#~ "`egrep' деген колдонулбай калды; анын ордуна `grep -E' деп колдонунуз.\n"
+
+#~ msgid "Invocation as `fgrep' is deprecated; use `grep -F' instead.\n"
+#~ msgstr ""
+#~ "`fgrep' деген колдонулбай калды; анын ордуна `grep -F' деп колдонунуз.\n"
+
+# kandai koldpnulat bilbeim.
+#~ msgid ""
+#~ "In GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped."
+#~ msgstr ""
+#~ "GREP_COLORS=\"%s\" дегенде, \"%s\" көлөмүнө маани жазылыш керек (\"=..."
+#~ "\"); колдонулбайт."
+
+# kandai koldpnulat bilbeim.
+#~ msgid ""
+#~ "In GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped."
+#~ msgstr ""
+#~ "GREP_COLORS=\"%s\" дегенде, \"%s\" көлөмү булев түрүндө жана маани "
+#~ "алалбайт (\"=%s\"); колдонулбайт."
+
+# kandai koldpnulat bilbeim.
+#~ msgid "In GREP_COLORS=\"%s\", the \"%s\" capacity %s."
+#~ msgstr "GREP_COLORS=\"%s\" дегенде, \"%s\" көлөмү %s."
+
+#~ msgid ""
+#~ "Stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\"."
+#~ msgstr ""
+#~ "Туура �ме� жазылган GREP_COLORS=\"%s\", \"%s\" катарында ишке алынуу�у "
+#~ "токтоду."
+
+#~ msgid "unknown directories method"
+#~ msgstr "папка методу белги�из"
+
+# FSF котормо�у ;)
+#~ msgid ""
+#~ "Copyright (C) 1988, 1992-2002, 2004, 2005  Free Software Foundation, "
+#~ "Inc.\n"
+#~ msgstr ""
+#~ "Укуктары �акталган (C) 1988, 1992-2002, 2004, 2005 Эркин Программа Фонду "
+#~ "(FSF)\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions.  There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Бул �ркин колдонулуучу программа; копи��ын алуу үчүн коддордо жазылган\n"
+#~ "шарттарды караңыз. Бул программанын �ч убада�ы ЖОК; керек бол�о СООД� же\n"
+#~ "БИР М�КС�ТК� ЫҢГ�ЙЛУУ болуу�уна да убада жок.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "-P жана -z опци�лары чогуу колдонулбайт"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: мындай опци� колдонулбайт -- %c\n"
diff --git a/src/grep/po/lt.gmo b/src/grep/po/lt.gmo
new file mode 100644
index 0000000..8e1d215
--- /dev/null
+++ b/src/grep/po/lt.gmo
diff --git a/src/grep/po/lt.po b/src/grep/po/lt.po
new file mode 100644
index 0000000..deb35ef
--- /dev/null
+++ b/src/grep/po/lt.po
@@ -0,0 +1,867 @@
+# translation of grep-2.5.4-pre3 to Lithuanian
+# Copyright (C) 2008 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+#
+# Gintautas Miliauskas <gintas@akl.lt>, 2008.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep-2.5.4-pre3\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2008-07-09 13:28+0300\n"
+"Last-Translator: Gintautas Miliauskas <gintas@akl.lt>\n"
+"Language-Team: Lithuanian <komp_lt@konferencijos.lt>\n"
+"Language: lt\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: KBabel 1.11.4\n"
+"Plural-Forms:  nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && (n"
+"%100<10 || n%100>=20) ? 1 : 2);\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr ""
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr ""
+
+#: lib/dfa.c:896
+#, fuzzy
+msgid "unbalanced ["
+msgstr "Nesubalansuotas ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr ""
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr ""
+
+#: lib/dfa.c:1210
+#, fuzzy
+msgid "unfinished \\ escape"
+msgstr "Nebaigta \\ kaitos seka"
+
+#: lib/dfa.c:1371
+#, fuzzy
+msgid "invalid content of \\{\\}"
+msgstr "netaisyklingas maksimalus skai�ius"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr ""
+
+#: lib/dfa.c:1858
+#, fuzzy
+msgid "unbalanced ("
+msgstr "Nesubalansuotas ("
+
+#: lib/dfa.c:1975
+#, fuzzy
+msgid "no syntax specified"
+msgstr "Nenurodyta sintaksÄ—"
+
+#: lib/dfa.c:1986
+#, fuzzy
+msgid "unbalanced )"
+msgstr "Nesubalansuotas )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Nežinoma sistemos klaida"
+
+#: lib/getopt.c:278
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: parametras `%s' dviprasmis\n"
+
+#: lib/getopt.c:284
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: parametras `%s' dviprasmis\n"
+
+#: lib/getopt.c:319
+#, fuzzy, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: neatpažintas argumentas „%c%s“\n"
+
+#: lib/getopt.c:345
+#, fuzzy, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: argumentas „%c%s“ neleidžia parametro\n"
+
+#: lib/getopt.c:360
+#, fuzzy, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: parametrui „%s“ reikia argumento\n"
+
+#: lib/getopt.c:621
+#, fuzzy, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: netaisyklingas argumentas -- %c\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, fuzzy, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: parametrui reikia argumento -- %c\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "baigÄ—si atmintis"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr ""
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr ""
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "„"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "“"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr ""
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr ""
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "BaigÄ—si atmintis"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ""
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr ""
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr ""
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr ""
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr ""
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, fuzzy, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Licencija GPLv3+: GNU GPL versija 3 arba vÄ—lesnÄ— <http://gnu.org/licenses/"
+"gpl.html>\n"
+"Å i programa laisva: galite jÄ… keisti ir platinti.\n"
+"Nėra JOKIOS GARANTIJOS, kiek leidžia įstatymai.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"Apie klaidas praneškite adresu <%s>.\n"
+
+#: lib/version-etc.c:251
+#, fuzzy, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+"\n"
+"Apie klaidas praneškite adresu <%s>.\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr ""
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standartinis įvedimas)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "netaisyklingas konteksto ilgio argumentas"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "įvedimas per didelis skai�iavimui"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "Dvejetainis failas %s atitinka\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "rekursyvus aplankų ciklas"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr ""
+
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Naudojimas: %s [ARGUMENTAS]... Å ABLONAS [FAILAS]...\n"
+
+#: src/grep.c:1963
+#, fuzzy, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Pabandykite „%s --help“, jei norite gauti daugiau informacijos.\n"
+
+#: src/grep.c:1969
+#, fuzzy, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Ieškoti ŠABLONO kiekviename faile arba standartiniame įėjime.\n"
+
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Pavyzdys: %s -i 'labas pasauli' menu.h main.c\n"
+"\n"
+"Reguliariųjų išraiškų parinkimas ir interpretacija:\n"
+
+#: src/grep.c:1975
+#, fuzzy, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     ŠABLONAS yra išplėstinė reguliarioji išr. (ERE)\n"
+"  -F, --fixed-strings       ŠABLONAS yra aibė fiksuotų sekų atskirose "
+"eilutÄ—se\n"
+"  -G, --basic-regexp        ŠABLONAS yra įprasta reguliarioji išraiška "
+"(BRE)\n"
+"  -P, --perl-regexp         ŠABLONAS yra Perl reguliarioji išraiška\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=ŠABLONAS     naudoti ŠABLONĄ paieškai\n"
+"  -f, --file=FAILAS         gauti ŠABLONĄ iš FAILO\n"
+"  -i, --ignore-case         ignoruoti raidžių registrą\n"
+"  -w, --word-regexp         ŠABLONAS turi atitikti tik pilnus žodžius\n"
+"  -x, --line-regexp         Å ABLONAS turi atitikti tik pilnas eilutes\n"
+"  -z, --null-data           duomenų eilutė baigiasi 0 baitu, o ne nauja "
+"eil.\n"
+
+#: src/grep.c:1989
+#, fuzzy, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Kita:\n"
+"  -s, --no-messages         nerodyti klaidų\n"
+"  -v, --invert-match        išrinkti neatitinkan�ias eilutes\n"
+"  -V, --version             spausdinti versijos informaciją ir išeiti\n"
+"      --help                parodyti šią informaciją ir išeiti\n"
+"      --mmap                naudoti mmap įvedimą, jei tai įmanoma\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"\n"
+"Konteksto valdymas:\n"
+"  -B, --before-context=NUM  spausdinti NUM eilu�ių prieš atitikimą\n"
+"  -A, --after-context=NUM   spausdinti NUM eilu�ių po atitikimo\n"
+"  -C, --context=NUM         spausdinti NUM eilu�ių konteksto\n"
+"  -NUM                      tas pats, kaip --context=NUM\n"
+"      --color[=KADA],\n"
+"      --colour[=KADA]       naudoti markerius atitikimams pažymėti;\n"
+"                            KADA yra „always“, „never“ arba „auto“\n"
+"  -U, --binary              nešalinti CR simbolių eilutės pabaigoje (MSDOS)\n"
+"  -u, --unix-byte-offsets   pranešti baitų pozicijas, tarsi nebūtų CRų "
+"(MSDOS)\n"
+"\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Jei FAILAS nenurodytas arba yra -, skaityti standartinį įvedimą.  Jei\n"
+"pateikti mažiau negu du failai, naudoti -h.  Grąžinamas klaidos kodas\n"
+"0, jei rasta bent viena eilutÄ—, 1 kitais atvejais;\n"
+"jei įvyksta klaida ir nenurodytas -q, klaidos kodas yra 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "nurodyti nesuderinami atitikimo mechanizmai"
+
+#: src/grep.c:2101
+#, fuzzy
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Parametro -P palaikymas neįkompiliuotas į šią --disable-perl-regexp programą"
+
+#: src/grep.c:2103
+#, fuzzy, c-format
+msgid "invalid matcher %s"
+msgstr "netaisyklingas maksimalus skai�ius"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "nežinomas įrenginių metodas"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "netaisyklingas maksimalus skai�ius"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "nežinomas dvejetainių failų tipas"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr ""
+
+#: src/pcresearch.c:143
+#, fuzzy
+msgid "the -P option only supports a single pattern"
+msgstr "Parametras -P leidžia tik vieną šabloną"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr ""
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr ""
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "baigÄ—si atmintis"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr ""
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr ""
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr ""
+
+#, fuzzy, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "įspėjimas: %s: %s\n"
+
+#, fuzzy
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: argumentas „--%s“ neleidžia parametro\n"
+
+#, fuzzy
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: neatpažintas argumentas „--%s“\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: parametras „-W %s“ dviprasmis\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: parametras „-W %s“ nepriima argumento\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: parametrui „%s“ reikia argumento\n"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr ""
+#~ "ŠABLONAS numatytuoju atveju yra paprasta reguliarioji išraiška (BRE).\n"
+
+#, fuzzy
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "„egrep“ reiškia „grep -E“. „fgrep“ reiškia „grep -F“.\n"
+#~ "Tiesioginiai kvietimai vardais „egrep“ arba „fgrep“ nebenaudotini.\n"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "nebaigtas pakartojimų skai�ius"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "netaisyklingas pakartojimų skai�ius"
+
+#~ msgid "writing output"
+#~ msgstr "rašomas išvedimas"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "ŠABLONAS yra išplėstinė reguliarioji išraiška (ERE).\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "ŠABLONAS yra aibė simbolių sekų atskirose eilutėse.\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE;\n"
+#~ "                            TYPE is `binary', `text', or `without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories;\n"
+#~ "                            ACTION is `read', `recurse', or `skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+#~ "                            ACTION is `read' or `skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=FILE_PATTERN  search only files that match FILE_PATTERN\n"
+#~ "      --exclude=FILE_PATTERN  skip files and directories matching "
+#~ "FILE_PATTERN\n"
+#~ "      --exclude-from=FILE   skip files matching any file pattern from "
+#~ "FILE\n"
+#~ "      --exclude-dir=PATTERN directories that match PATTERN will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match print only names of FILEs containing no "
+#~ "match\n"
+#~ "  -l, --files-with-matches  print only names of FILEs containing matches\n"
+#~ "  -c, --count               print only a count of matching lines per "
+#~ "FILE\n"
+#~ "  -T, --initial-tab         make tabs line up (if needed)\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "IÅ¡vedimo valdymas:\n"
+#~ "  -m, --max-count=NUM       sustoti po NUM atitikimų\n"
+#~ "  -b, --byte-offset         išvesti baito numerį išvedant eilutes\n"
+#~ "  -n, --line-number         išvesti eilutės numerį išvedant eilutes\n"
+#~ "      --line-buffered       išleisti (flush) išvedimą po kiekvienos "
+#~ "eilutÄ—s\n"
+#~ "  -H, --with-filename       išspausdinti failo vardą kiekvienam "
+#~ "atitikimui\n"
+#~ "  -h, --no-filename         nespausdinti failo vardo\n"
+#~ "      --label=ŽYMĖ          spausdinti ŽYMĘ kaip failo vardą stand. "
+#~ "įvedimui\n"
+#~ "  -o, --only-matching       rodyti tik tą eilutės dalį, kuri atitinka "
+#~ "Å ABLONÄ„\n"
+#~ "  -q, --quiet, --silent     išjunti normalų išvedimą\n"
+#~ "      --binary-files=TIPAS   tarti, kad dvejetainiai failai yra Å¡io "
+#~ "TIPO;\n"
+#~ "                            TIPAS yra „binary“, „text“ arba „without-"
+#~ "match“\n"
+#~ "  -a, --text                tapatu --binary-files=text\n"
+#~ "  -I                        tapatu --binary-files=without-match\n"
+#~ "  -d, --directories=VEIKSMAS kaip ieškoti aplankuose;\n"
+#~ "                            VEIKSMAS yra „read“, „recurse“ arba „skip“\n"
+#~ "  -D, --devices=VEIKSMAS    kaip ieškoti įrenginiuose, FIFO ir lizduose;\n"
+#~ "                            VEIKSMAS yra „read“ arba „skip“\n"
+#~ "  -R, -r, --recursive       tapatu --directories=recurse\n"
+#~ "      --include=FAILŲ_ŠABLONAS ieškoti failuose, kurių vardai atitinka "
+#~ "Å¡abl.\n"
+#~ "      --exclude=FAILŲ_ŠABLONAS praleisti failus, kurių vardai atitinka "
+#~ "Å¡abl.\n"
+#~ "      --exclude-from=FAILAS praleisti failus, kurių v. atitinka šabl. iš "
+#~ "FAILO\n"
+#~ "      --exclude-dir=Å ABLONAS aplankai, atitinkantys Å ABLONÄ„, bus "
+#~ "praleisti.\n"
+#~ "  -L, --files-without-match spausdinti tik neatitinkan�ių failų vardus\n"
+#~ "  -l, --files-with-matches  spausdinti tik atitinkan�ių šabloną failų "
+#~ "vardus\n"
+#~ "  -c, --count               spausdinti tik atitinkan�ių eilu�ių faile "
+#~ "skai�ių\n"
+#~ "  -T, --initial-tab         lygiuoti tabuliatorius (jei reikia)\n"
+#~ "  -Z, --null                spausdinti 0 baitÄ… po FAILO vardo\n"
+
+#~ msgid "Invocation as `egrep' is deprecated; use `grep -E' instead.\n"
+#~ msgstr "Kvietimas pavadinimu „egrep“ nebenaudotinas, naudokite „grep -E“.\n"
+
+#~ msgid "Invocation as `fgrep' is deprecated; use `grep -F' instead.\n"
+#~ msgstr "Kvietimas pavadinimu „fgrep“ nebenaudotinas, naudokite „grep -F“.\n"
+
+#~ msgid ""
+#~ "In GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped."
+#~ msgstr ""
+#~ "Kintamajame GREP_COLORS=„%s“, „%s“ reikia reikšmės („=...“); praleista."
+
+#~ msgid ""
+#~ "In GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped."
+#~ msgstr ""
+#~ "Kintamajame GREP_COLORS=„%s“, „%s“ dvejetainis, todėl reikšmė („=%s“) "
+#~ "netinkama; praleista."
+
+#~ msgid "In GREP_COLORS=\"%s\", the \"%s\" capacity %s."
+#~ msgstr "Kintamajame GREP_COLORS=„%s“, „%s“ talpumas %s."
+
+#~ msgid ""
+#~ "Stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\"."
+#~ msgstr ""
+#~ "Sustabdytas netaisyklingo GREP_COLORS=„%s“ apdorojimas ties likusiu "
+#~ "posekiu „%s“."
+
+#~ msgid "unknown directories method"
+#~ msgstr "nežinomas aplankų metodas"
+
+#~ msgid "Copyright (C) 2008 Free Software Foundation, Inc.\n"
+#~ msgstr "AutorinÄ—s teisÄ—s (C) 2008 Free Software Foundation, Inc.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Parametrai -P ir -z negali būti sujungti"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: neleistinas argumentas -- %c\n"
diff --git a/src/grep/po/nb.gmo b/src/grep/po/nb.gmo
new file mode 100644
index 0000000..2981ce0
--- /dev/null
+++ b/src/grep/po/nb.gmo
diff --git a/src/grep/po/nb.po b/src/grep/po/nb.po
new file mode 100644
index 0000000..d8ebd0f
--- /dev/null
+++ b/src/grep/po/nb.po
@@ -0,0 +1,925 @@
+# Norwegian bokmål translation of GNU Grep
+# Copyright (C) 1996 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Johnny A. Solbu <johnny@solbu.net>, 2020-2021
+# Ã…ka Sikrom <a4@hush.com>, 2014-2020
+# Eivind Tagseth <eivindt@multinet.no>, 1997, 2004
+# Karl Anders Øygard <karl.oygard@fou.telenor.no>, 1996.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep-3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-09 14:11+0200\n"
+"Last-Translator: Johnny A. Solbu <johnny@solbu.net>\n"
+"Language-Team: Norwegian Bokmaal <l10n-no@lister.huftis.org>\n"
+"Language: nb\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: Poedit 2.2.3\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "«%s» er et ugyldig argument for %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "«%s» er et tvetydig argument for %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Følgende argumenter er gyldige:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "programfeil"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "stabel er full"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "skrivefeil"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "ubalansert ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "ugyldig tegnklasse"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "gjeldende tegnklasse-syntaks er [[:space:]], ikke [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "ufullstendig \\-skiftetegn"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "ugyldig innhold i \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "regulært uttrykk er for stort"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "ubalansert ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "ingen syntaks er valgt"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "ubalansert «)»"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Ukjent systemfeil"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: valget «%s%s» er flertydig\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: valget «%s%s» er flertydig, og kan bety følgende:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: valget «%s%s» er ukjent\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: valget «%s%s» tillater ikke argumenter\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: valget «%s%s» krever et argument\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: valget -- «%c» er ugyldig\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: valget -- «%c» krever et argument\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "minnet er oppbrukt"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "klarte ikke å hente gjeldende arbeidsmappe"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "klarte ikke å gå tilbake til opprinnelig arbeidsmappe"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "klarte ikke å endre fildeskriptor for tekst-/binærmodus"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "«"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "»"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Fullført"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Ingen treff"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Ugyldig regulært uttrykk"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Ugyldig sorteringstegn"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Ugyldig tegnklassenavn"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Avsluttende omvendt skråstrek"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Ugyldig tilbakereferanse"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Ingen treff på «[», «[^», «[:», «[.» eller «[=»"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Ingen treff på ( eller \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Ingen treff på \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Ugyldig innhold i «\\{\\}»"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Ugyldig slutt på rekkevidde"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Minnet er oppbrukt"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Ugyldig foregående regulært uttrykk"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "For tidlig slutt på regulært uttrykk"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Regulært uttrykk er for stort"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Ingen treff på «)» eller «\\)»"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Intet tidligere regulært uttrykk"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Pakket av %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Pakket av %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Lisens GPLv3+: GNU GPL versjon 3 eller nyere <%s>.\n"
+"Dette er fri programvare. Du kan endre og dele den videre så mye du vil.\n"
+"Utgiveren stiller INGEN GARANTI, i den grad gjeldende lovverk tillater det.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Skrevet av %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Skrevet av %s og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Skrevet av %s, %s og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Skrevet av %s, %s, %s\n"
+"og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Skrevet av %s, %s, %s,\n"
+"%s og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Skrevet av %s, %s, %s,\n"
+"%s, %s og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Skrevet av %s, %s, %s,\n"
+"%s, %s, %s og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Skrevet av %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Skrevet av %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s og %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Skrevet av %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s og andre.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Rapporter feil til: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Rapporter feil som oppstår med %s til: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Nettside for %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Generell hjelp til bruk av GNU-programvare: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standard inndata)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "ugyldig kontekstlengde"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "for mye inndata å telle"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: Binærfil samsvarer"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: advarsel: rekursiv mappeløkke"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: inndatafil er også brukt som utdata"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Bruk: %s [VALG] … MØNSTER [FIL] …\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Prøv å skrive «%s --help» for mer informasjon.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Søk etter MØNSTER i valgt(e) FIL(er).\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Eksempel: %s -i 'hei verden' menu.h main.c\n"
+"MØNSTER kan inneholde flere mønstre adskilt med linjeskift.\n"
+"\n"
+"Reg.uttrykksutvalg og tolkning:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     MØNSTER er et utvidet regulært uttrykk\n"
+"  -F, --fixed-strings       MØNSTER er flere linje-adskilte strenger\n"
+"  -G, --basic-regexp        MØNSTER er et enkelt regulært uttrykk\n"
+"  -P, --perl-regexp         MØNSTER er et Perl-uttrykk\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=MØNSTER      søk etter MØNSTER\n"
+"  -f, --file=FIL            hent MØNSTER fra valgt FIL\n"
+"  -i, --ignore-case         ikke skill mellom store og små bokstaver\n"
+"      --no-ignore-case      skill mellom store og små bokstaver (forvalgt)\n"
+"  -w, --word-regexp         søk etter hele ord\n"
+"  -x, --line-regexp         søk etter hele linjer\n"
+"  -z, --null-data           linjer slutter på 0-byte i stedet for "
+"linjeskift\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Diverse:\n"
+"  -s, --no-messages         ikke skriv ut feilmeldinger\n"
+"  -v, --revert-match        velg linjer som ikke passer\n"
+"  -V, --version             vis versjon og avslutt\n"
+"      --help                vis denne helpeteksten og avslutt\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Utdata-kontroll:\n"
+"  -m, --max-count=ANT       stopp ved valgt ANTall treff\n"
+"  -b, --byte-offset         skriv ut hvor søkeuttrykket ga treff per "
+"utdatalinje\n"
+"  -n, --line-number         skriv ut linjenummmer per utdatalinje\n"
+"      --line-buffered       tøm utdata på hver linje\n"
+"  -H, --with-filename       ta med filnavn på søketreff-linjer\n"
+"  -h, --no-filename         ikke ta med filnavn-prefiks i utdata\n"
+"      --label=ETIKETT         bruk valgt ETIKETT som prefiks på standard "
+"inndata-filnavn\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       bare vis den delen av linja som ga treff\n"
+"  -q, --quiet, --silent     ikke skriv ut noe vanlig utdata\n"
+"      --binary-files=TYPE   forvent at binærfiler er av valgt TYPE.\n"
+"                            TYPE er «binary» (binær), «text» (tekst) eller "
+"«without-match» (uten treff)\n"
+"  -a, --text                tilsvarer «--binary-files=text»\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        tilsvarer «--binary-files=without-match»\n"
+"  -d, --directories=HANDLING  hvordan mapper skal håndteres.\n"
+"                            HANDLING er «read» (les), «recurse» (søk i "
+"undermapper og -filer) eller «skip» (hopp over)\n"
+"  -D, --devices=HANDLING      hvordan enheter, FIFO-er og sokler skal "
+"behandles.\n"
+"                            HANDLING er «read» (les) eller «skip» (hopp "
+"over)\n"
+"  -r, --recursive           tilsvarer «--directories=recurse»\n"
+"  -R, --dereference-recursive  likner «-r», men følger symbolske lenker\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=MØNSTER  bare søk gjennom filer som samsvarer med MØNSTER\n"
+"      --exclude=MØNSTER  hopp over filer som samsvarer med MØNSTER\n"
+"      --exclude-from=FIL   hopp over filer som samsvarer med mønstre nevnt i "
+"FIL\n"
+"      --exclude-dir=MØNSTER  hopp over mapper som samsvarer med MØNSTER.\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  bare skriv ut FILnavn som ikke inneholder "
+"søketreff\n"
+"  -l, --files-with-matches  bare skriv ut FILnavn som inneholder søketreff\n"
+"  -c, --count               bare skriv ut antall samsvarende linjer per FIL\n"
+"  -T, --initial-tab         still opp tabulatorer (hvis nødvendig)\n"
+"  -Z, --null                skriv ut 0-byte etter FILnavn\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Kontekstkontroll:\n"
+"  -B, --before-context=ANT  skriv ut valgt ANTall linjer med ledende "
+"kontekst\n"
+"  -A, --after-context=ANT   skriv ut valgt ANTall linjer med avsluttende "
+"kontekst\n"
+"  -C, --context=ANT         skriv ut valgt ANTall linjer med utdata-"
+"kontekst\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      tilsvarer «--context=NUM»\n"
+"      --group-separator=SEP Skriv ut SEP på linje mellom treff med kontekst\n"
+"      --no-group-separator ikke skriv ut skilletegn for treff med kontekst\n"
+"      --color[=NÃ…R],\n"
+"      --colour[=NÅR]       bruk markører for å fremheve strenger som "
+"samsvarer\n"
+"                            NÅR er enten «always» (alltid) , "
+"«never» (aldri), eller «auto»\n"
+"  -U, --binary              ikke fjern CR-tegn ved EOL (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Programmet leser standard inndata når FIL er «-».  Når FIL ikke er valgt, "
+"leses «.» i\n"
+"rekursiv modus, og ellers «-». Valget «-h» gjelder implisitt hvis færre enn "
+"to FILer er valgt.\n"
+"Avsluttende statuskode er 0 når søket gir treff, og ellers 1.\n"
+"Hvis det oppstår feil og «-q» ikke er valgt, avslutter programmet med "
+"statuskode 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "søkeuttrykkene er i konflikt med hverandre"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr "Søk støttes ikke i Perl når det er bygd med «--disable-perl-regexp»"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "«%s» er et ugyldig søkeuttrykk"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "ukjent enhetsmetode"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "advarsel: --unix-byte-offsets (-u) er avleggs"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "ugyldig maksantall"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "ukjent binærfiltype"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Skrevet av Mike Haertel og andre. Se\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "klarte ikke å tildele minne til PCRE JIT-stabelen"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P støtter bare regioner i unibyte- og UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "valget «-P» støtter bare ett mønster"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "intern feil (dette skal aldri skje)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "grensa for PCRE-linjelengde er overskredet"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: minnet er oppbrukt"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: PCRE JIT-stabel er oppbrukt"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: grensa for PCRE-tilbakegang er overskredet"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: PCREs rekursjonsgrense er overskredet"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: intern PCRE-feil: %d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr "advarsel: GREP_OPTIONS er utdatert. Bruk et alias eller skript"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "advarsel: %s. %s"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "Nettside for %s: <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "%s%s-argumentet «%s» er ugyldig"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "ugyldig suffiks i %s%s-argument «%s»"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s-argumentet «%s» er for stort/langt"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "intern feil"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: valget «--%s» tillater ikke argumenter\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: valget «--%s» er ukjent\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: valget «-W %s» er flertydig\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: valget «-W %s» tillater ikke argumenter\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: valget «-W %s» krever et argument\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "lseek mislyktes"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "MØNSTER er et enkelt regulært uttrykk (BRE) som standard. \n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "«egrep» betyr «grep -E».  «fgrep» betyr «grep -F».\n"
+#~ "Direkte kjøring som «egrep» eller «fgrep» er foreldet.\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "ingen treff på «^», eller «$» støttes ikke med «-Pz»"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Nettside for GNU Grep: <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "inndata inneholder en ugyldig UTF-8-bytesekvens"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "uferdig gjentagelsesantall"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "feilaktig gjentagelsesantall"
+
+#~ msgid "out of memory"
+#~ msgstr "tomt for minne"
+
+#~ msgid "writing output"
+#~ msgstr "skriver utdata"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Bruk: %s [FLAGG]... MØNSTER [FIL] ...\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE\n"
+#~ "                            TYPE is 'binary', 'text', or 'without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories\n"
+#~ "                            ACTION is 'read', 'recurse', or 'skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets\n"
+#~ "                            ACTION is 'read' or 'skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=PATTERN     files that match PATTERN will be examined\n"
+#~ "      --exclude=PATTERN     files that match PATTERN will be skipped.\n"
+#~ "      --exclude-from=FILE   files that match PATTERN in FILE will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match only print FILE names containing no match\n"
+#~ "  -l, --files-with-matches  only print FILE names containing matches\n"
+#~ "  -c, --count               only print a count of matching lines per "
+#~ "FILE\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Utskriftskontroll:\n"
+#~ "  -m, --max-count=ANT       stopp etter ANT samsvar\n"
+#~ "  -b, --byte-offset         skriv byte-forskyvning sammen med "
+#~ "utskriftslinjer\n"
+#~ "  -n, --line-number         skriv linjenummer sammen med utskriftslinjer\n"
+#~ "      --line-buffered       tøm utskriftsbuffer for hver linje\n"
+#~ "  -H, --with-filename       skriv filnavnet for hvert samsvar\n"
+#~ "  -h, --no-filename         ikke skriv filnavnet for hvert samsvar\n"
+#~ "      --label=NAVN          skriv NAVN som filnavn for standard innkanal\n"
+#~ "  -o, --only-matching       vis bare den delen av en linje som samsvarer "
+#~ "med\n"
+#~ "                            MØNSTER.\n"
+#~ "  -q, --quiet, --silent     undertrykk all vanlig utskrift\n"
+#~ "      --binary-files=TYPE   anta at binære filer er TYPE\n"
+#~ "                            TYPE er «binary», «text» eller «without-"
+#~ "match»\n"
+#~ "  -a, --text                samme som binary-files=text\n"
+#~ "  -I                        samme som --binary-files=without-match\n"
+#~ "  -d, --directories=HANDLING hvordan håndtere kataloger\n"
+#~ "                            HANDLING er «read» eller «skip»\n"
+#~ "  -D, --devices=HANDLING    hvordan enheter, FIFOer og sockets skal "
+#~ "håndteres\n"
+#~ "                            HANDLING er «read» eller «skip»\n"
+#~ "  -R, -r, --recursive       samme som --directories=recurse\n"
+#~ "      --include=MØNSTER     undersøk filer som samsvarer med MØNSTER.\n"
+#~ "      --exclude=MØNSTER     hopp over filer som samsvarer med MØNSTER.\n"
+#~ "      --exclude-from=FIL    hopp over filer som samsvarer med MØNSTER i "
+#~ "FIL.\n"
+#~ "  -L, --files-without-match bare skriv FIL-navn uten samsvar\n"
+#~ "  -l, --files-with-matches  bare skriv FIL-navnene som inneholder "
+#~ "samsvar\n"
+#~ "  -c, --count               bare skriv ut antall samsvarende linjer per "
+#~ "FIL\n"
+#~ "  -Z, --null                skriv 0-byte etter FIL-navn\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Report bugs to <bug-gnu-utils@gnu.org>.\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Rapportér feil til <bug-gnu-utils@prep.ai.mit.edu>.\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "ukjent katalogmetode"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+#~ msgstr ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions. There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Dette er fri programvare, se kildekoden for kopieringsbetingelser.  Det\n"
+#~ "er INGEN garanti, ikke en gang for SALGBARHET eller EGNETHET FOR NOEN \n"
+#~ "SPESIELL OPPGAVE.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "-P-flagget og -z-flagget kan ikke bli brukt sammen"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: ulovlig flagg -- %c\n"
diff --git a/src/grep/po/nl.gmo b/src/grep/po/nl.gmo
new file mode 100644
index 0000000..6116ec0
--- /dev/null
+++ b/src/grep/po/nl.gmo
diff --git a/src/grep/po/nl.po b/src/grep/po/nl.po
new file mode 100644
index 0000000..9f83a7a
--- /dev/null
+++ b/src/grep/po/nl.po
@@ -0,0 +1,900 @@
+# Dutch translations for GNU grep.
+# Copyright (C) 2021 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+#
+# "Keep your religious feelings to yourself."
+#
+# Benno Schulenberg <benno@vertaalt.nl>, 2005, 2007, 2008, 2010, 2011, 2012, 2013.
+# Benno Schulenberg <benno@vertaalt.nl>, 2014, 2015, 2016, 2018, 2019, 2020, 2021.
+# Erwin Poeze <erwin.poeze@gmail.com>, 2009.
+# Taco Witte <tcwitte@cs.uu.nl>, 2004.
+# Ivo Timmermans <itimmermans@bigfoot.com>, 2000.
+# Erick Branderhorst <branderh@debian.org>, 1996.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep-3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-11 11:40+0200\n"
+"Last-Translator: Benno Schulenberg <vertaling@coevern.nl>\n"
+"Language-Team: Dutch <vertaling@vrijschrift.org>\n"
+"Language: nl\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=2; plural=n != 1;\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "ongeldig argument %s van %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "argument %s van %s is niet eenduidig"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Geldige argumenten zijn:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "programmafout"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "stack-overloop"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "schrijffout"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "ongepaarde ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "ongeldige tekenklasse"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "syntax van tekenklasse is [[:space:]], niet [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "onafgemaakte \\-stuurcode"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "ongeldige inhoud van \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "reguliere expressie is te groot"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "ongepaarde ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "geen syntax opgegeven"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "ongepaarde )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Onbekende systeemfout"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: optie '%s%s' is niet eenduidig\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: optie '%s%s' is niet eenduidig; mogelijkheden zijn:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: onbekende optie '%s%s'\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: optie '%s%s' staat geen argument toe\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: optie '%s%s' vereist een argument\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: ongeldige optie -- '%c'\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: optie vereist een argument -- '%c'\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "onvoldoende geheugen beschikbaar"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "kan de huidige werkmap niet vastleggen"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "kan niet terugkeren naar de oorspronkelijke werkmap"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "kan modus van bestandsdescriptor niet instellen op tekst of binair"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "‘"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "’"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Gelukt"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Geen overeenkomsten"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Ongeldige reguliere expressie"
+
+# Zie http://mailman.vrijschrift.org/pipermail/vertaling/2005-August/004670.html
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Ongeldig samengesteld teken"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Ongeldige tekenklassenaam"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Backslash aan het eind"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Ongeldige terugverwijzing"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Ongepaarde [, [^, [:, [., of [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Ongepaarde ( of \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Ongepaarde \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Ongeldige inhoud van \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Ongeldig bereikeinde"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Onvoldoende geheugen beschikbaar"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Ongeldige voorafgaande reguliere expressie"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Voortijdig einde van reguliere expressie"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Reguliere expressie is te groot"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Ongepaarde ) of \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Geen eerdere reguliere expressie"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "In pakketvorm gebracht door %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "In pakketvorm gebracht door %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Dit is vrije software: u mag het vrijelijk wijzigen en verder verspreiden.\n"
+"De precieze licentie is GPL-3+: GNU General Public License versie 3 of "
+"later.\n"
+"Zie <%s> voor de volledige (Engelse) tekst.\n"
+"Deze software kent GEEN GARANTIE, voor zover de wet dit toestaat.\n"
+"\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Geschreven door %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Geschreven door %s en %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Geschreven door %s, %s en %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Geschreven door %s, %s, %s\n"
+"en %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Geschreven door %s, %s, %s,\n"
+"%s en %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Geschreven door %s, %s, %s,\n"
+"%s, %s en %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Geschreven door %s, %s, %s,\n"
+"%s, %s, %s en %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Geschreven door %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"en %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Geschreven door %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s en %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Geschreven door %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s en anderen.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"Rapporteer gebreken in het programma aan %s;\n"
+"meld fouten in de vertaling aan <vertaling@vrijschrift.org>.\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+"Rapporteer gebreken in het programma '%s' aan <%s>;\n"
+"meld fouten in de vertaling aan <vertaling@vrijschrift.org>.\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Webpagina van %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Algemene hulp bij gebruik van GNU-software: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standaardinvoer)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "ongeldig argument voor contextlengte"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "invoer is te groot om te kunnen tellen"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: binair bestand bevat de gezochte tekst"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: waarschuwing: recursieve lus in de mappen"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: invoerbestand is gelijk aan het uitvoerbestand"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Gebruik:  %s [OPTIE...] PATRONEN [BESTAND...]\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Typ '%s --help' voor meer informatie.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr ""
+"  \n"
+"Zoekt naar PATRONEN in ieder gegeven BESTAND.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"  \n"
+"    Voorbeeld:  %s -i 'hallo wereld' menu.h main.c\n"
+"\n"
+"PATRONEN kan uit meerdere patronen op aparte regels bestaan.\n"
+"\n"
+"Keuze en interpretatie van PATRONEN:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     PATRONEN zijn uitgebreide reguliere expressies\n"
+"  -F, --fixed-strings       PATRONEN zijn tekenreeksen\n"
+"  -G, --basic-regexp        PATRONEN zijn gewone reguliere expressies\n"
+"  -P, --perl-regexp         PATRONEN zijn reguliere Perl-expressies\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=PATRONEN     deze PATRONEN gebruiken bij het zoeken\n"
+"  -f, --file=BESTAND        patronen uit dit BESTAND halen\n"
+"  -i, --ignore-case         verschil tussen hoofd- en kleine letters "
+"negeren\n"
+"                              in de patronen en in de gegevens\n"
+"      --no-ignore-case      hoofd- van kleine letters onderscheiden "
+"(standaard)\n"
+"  -w, --word-regexp         patronen komen alleen overeen met een heel "
+"woord\n"
+"  -x, --line-regexp         patronen komen alleen overeen met een hele "
+"regel\n"
+"  -z, --null-data           regels eindigen op 0-byte, niet op LF-teken\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Diversen:\n"
+"  -s, --no-messages         foutmeldingen onderdrukken\n"
+"  -v, --invert-match        de niet-overeenkomende regels selecteren\n"
+"  -V, --version             programmaversie tonen en stoppen\n"
+"      --help                deze hulptekst tonen en stoppen\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Uitvoeropties:\n"
+"  -m, --max-count=AANTAL    na dit AANTAL overeenkomsten stoppen\n"
+"  -b, --byte-offset         bij de uitvoerregels het byte-adres tonen\n"
+"  -n, --line-number         bij de uitvoerregels het regelnummer tonen\n"
+"      --line-buffered       elke uitvoerregel direct tonen\n"
+"  -H, --with-filename       bij de uitvoerregels de bestandsnaam tonen\n"
+"  -h, --no-filename         nooit de bestandsnaam tonen\n"
+"      --label=LABEL         dit LABEL als naam voor standaardinvoer "
+"gebruiken\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       alleen overeenkomende niet-lege fragmenten "
+"tonen\n"
+"  -q, --quiet, --silent     alle normale uitvoer onderdrukken\n"
+"      --binary-files=TYPE   aannemen dat binaire bestanden van dit TYPE "
+"zijn;\n"
+"                              TYPE is 'binary' (binair), 'text' (als "
+"tekst),\n"
+"                              of 'without-match' (alsof geen "
+"overeenkomsten)\n"
+"  -a, --text                hetzelfde als '--binary-files=text'\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        hetzelfde als '--binary-files=without-match'\n"
+"  -d, --directories=ACTIE   mappen behandelen met deze ACTIE;\n"
+"                              ACTIE is 'read', 'recurse' of 'skip'\n"
+"                              (ofwel lezen, in-afdalen, of overslaan)\n"
+"  -D, --devices=ACTIE       apparaten, FIFO's en sockets behandelen met "
+"ACTIE;\n"
+"                              ACTIE is 'read' of 'skip' (lezen of "
+"overslaan)\n"
+"  -r, --recursive           afdalen in submappen (ofwel '--"
+"directories=recurse')\n"
+"  -R, --dereference-recursive   idem, maar alle symbolische koppelingen "
+"volgen\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=BESTANDSPATROON  alleen bestanden doorzoeken die aan\n"
+"                                   BESTANDSPATROON voldoen\n"
+"      --exclude=BESTANDSPATROON  bestanden overslaan die aan "
+"BESTANDSPATROON\n"
+"                                   voldoen\n"
+"      --exclude-from=BESTAND     bestanden overslaan die aan een\n"
+"                                   bestandspatroon in BESTAND voldoen\n"
+"      --exclude-dir=BSTNDSPTRN   mappen overslaan die aan BSTNDSPTRN "
+"voldoen\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match alleen namen van bestanden zonder overeenkomst "
+"tonen\n"
+"  -l, --files-with-matches  alleen namen van bestanden met overeenkomsten "
+"tonen\n"
+"  -c, --count               alleen het aantal overeenkomsten per bestand "
+"tonen\n"
+"  -T, --initial-tab         tabs uitlijnen (eventueel een tab-teken "
+"invoegen)\n"
+"  -Z, --null                een 0-byte invoegen na iedere bestandsnaam\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Contextbesturing:\n"
+"  -B, --before-context=AANTAL   dit AANTAL regels voorafgaande context "
+"tonen\n"
+"  -A, --after-context=AANTAL    dit AANTAL regels nakomende context tonen\n"
+"  -C, --context=AANTAL          dit AANTAL regels context tonen\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -AANTAL                       hetzelfde als '--context=AANTAL'\n"
+"      --group-separator=TEKENS  contexten scheiden met regel met deze "
+"tekens\n"
+"      --no-group-separator      geen scheiding weergeven tussen contexten\n"
+"      --color[=WANNEER],\n"
+"      --colour[=WANNEER]    overeenkomende tekst gekleurd weergeven;\n"
+"                              WANNEER is 'always' (altijd), "
+"'never' (nooit),\n"
+"                              of 'auto' (gepast voor uitvoerdoel; "
+"standaard)\n"
+"  -U, --binary              geen CR-tekens weghalen bij regeleinde (MSDOS/"
+"Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Indien BESTAND '-' is, wordt standaardinvoer gelezen.  Zonder een BESTAND\n"
+"wordt '.' gelezen indien in recursieve modus, anders wordt '-' gelezen.\n"
+"Bij minder dan twee BESTANDen wordt '-h' aangenomen.\n"
+"\n"
+"De afsluitwaarde is 0 in geval van overeenkomsten, anders 1; als er\n"
+"een fout optreedt en '-q' is niet gegeven, dan is de afsluitwaarde 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "conflicterende expressiesoorten"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr "Perl-expressies worden door deze programmaversie niet ondersteund"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "ongeldige expressiesoort '%s'"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "onbekende apparaten-actie"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "waarschuwing: --unix-byte-offsets (-u) is verouderd"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "ongeldig maximum aantal"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "onbekend binair bestandstype"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Geschreven door Mike Haertel en anderen; zie\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "onvoldoende geheugen beschikbaar voor de PCRE-JIT-stack"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "optie '-P' ondersteunt alleen enkelbytes- en UTF-8-taalregio's"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "optie '-P' accepteert slechts één patroon"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "**interne programmafout** (zou nooit mogen gebeuren)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "de regellengtegrens van PCRE is overschreden"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: onvoldoende geheugen beschikbaar"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: de PCRE-JIT-stack is volledig gebruikt"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: de terugverwijzingengrens van PCRE is overschreden"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: de recursiegrens van PCRE is overschreden"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: **interne programmafout** in PCRE: %d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "waarschuwing: GREP_OPTIONS is verouderd; gebruik een alias of een script"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "waarschuwing: %s: %s"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "Webpagina van '%s': <https://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "ongeldig argument '%3$s' van %1$s%2$s"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "ongeldig achtervoegsel in argument '%3$s' van %1$s%2$s"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "argument '%3$s' van %1$s%2$s is te groot"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "**interne programmafout**"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: optie '--%s' staat geen argument toe\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: onbekende optie '--%s'\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: optie '-W %s' is niet eenduidig\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: optie '-W %s' staat geen argument toe\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: optie '-W %s' vereist een argument\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "'lseek' is mislukt"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "PATROON is standaard een gewone reguliere expressie (BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "Het gebruik van 'egrep' en 'fgrep' wordt ontraden;\n"
+#~ "'egrep' betekent 'grep -E'; 'fgrep' betekent 'grep -F'.\n"
+#~ "\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "een naakte ^ of $ wordt niet ondersteund met optie '-Pz'"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Webpagina van GNU grep: <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "ongeldige UTF-8-bytereeks in invoer"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "PATROON is een uitgebreide reguliere expressie (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr ""
+#~ "Gebruik van 'egrep' wordt ontraden; het is beter 'grep -E' te gebruiken.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "PATROON is een serie tekenreeksen, elk op een aparte regel.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr ""
+#~ "Gebruik van 'fgrep' wordt ontraden; het is beter 'grep -F' te gebruiken.\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s kan alleen de patroonsyntax %s gebruiken"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "de optie '--mmap' doet niets meer sinds 2010"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "onafgemaakt herhalingsaantal"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "onjuist herhalingsaantal"
+
+#~ msgid "writing output"
+#~ msgstr "schrijven van uitvoer..."
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "GREP_COLORS='%s' --\n"
+#~ "  Kenmerk '%s' vereist een waarde ('=...'); genegeerd."
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "GREP_COLORS='%s' --\n"
+#~ "  Kenmerk '%s' is booleaans en verwacht geen waarde ('=%s'); genegeerd."
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr ""
+#~ "GREP_COLORS='%s' --\n"
+#~ "  Kenmerk '%s': %s."
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "GREP_COLORS='%s' --\n"
+#~ "  Tekenreeks is onjuist; verwerking is gestopt voor subreeks '%s'."
+
+#~ msgid "unknown directories method"
+#~ msgstr "onbekende mappen-actie"
diff --git a/src/grep/po/pa.gmo b/src/grep/po/pa.gmo
new file mode 100644
index 0000000..e89550b
--- /dev/null
+++ b/src/grep/po/pa.gmo
diff --git a/src/grep/po/pa.po b/src/grep/po/pa.po
new file mode 100644
index 0000000..646f11f
--- /dev/null
+++ b/src/grep/po/pa.po
@@ -0,0 +1,708 @@
+# Punjabi Translation for grep
+# Copyright (C) 2012 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+#
+# A S Alam <aalam@users.sf.net>, 2012.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 2.11.11-pre1\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2012-05-19 17:52+0530\n"
+"Last-Translator: A S Alam <aalam@users.sf.net>\n"
+"Language-Team: Punjabi <punjabi-l10n@lists.sourceforge.net>\n"
+"Language: pa\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=2; plural=n != 1;\n"
+"X-Generator: Lokalize 1.4\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "%2$s ਲਈ ਗਲਤ ਆਰਗੂਮੈਂਟ %1$s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "ਠੀਕ ਆਰਗੂਮੈਂਟ ਹਨ:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "ਲਿਖਣ ਗਲਤੀ"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "ਅਧੂਰੀ ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "ਗਲਤ ਕਰੈਕਟਰ ਕਲਾਸ"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr ""
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr ""
+
+#: lib/dfa.c:1371
+#, fuzzy
+msgid "invalid content of \\{\\}"
+msgstr "ਗਲਤ ਵੱਧ ਤੋਂ ਵੱਧ ਗਿਣਤੀ"
+
+#: lib/dfa.c:1374
+#, fuzzy
+msgid "regular expression too big"
+msgstr "ਨਿਯਮਤ ਸਮੀਕਰਨ ਬਹ�ਤ ਵੱਡੀ ਹੈ"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "ਅਧੂਰੀ ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "ਕੋਈ ਸੰਟੈਕਸ ਨਹੀਂ ਦਿੱਤਾ"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "ਅਧੂਰੀ )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "ਅਣਜਾਣ ਸਿਸਟਮ ਗਲਤੀ"
+
+#: lib/getopt.c:278
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: ਚੋਣ '-W %s' ਸਧਾਰਨ ਹੈ।\n"
+
+#: lib/getopt.c:284
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: ਚੋਣ '-W %s' ਸਧਾਰਨ ਹੈ।\n"
+
+#: lib/getopt.c:319
+#, fuzzy, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: ਬੇ-ਪਛਾਣ ਚੋਣ '%c%s'\n"
+
+#: lib/getopt.c:345
+#, fuzzy, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: ਚੋਣ '%c%s' ਇੱਕ ਆਰਗੂਮੈਂਟ ਨਹੀਂ ਲੈਂਦੀ\n"
+
+#: lib/getopt.c:360
+#, fuzzy, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: ਚੋਣ '--%s' ਲਈ ਇੱਕ ਆਰਗੂਮੈਂਟ ਚਾਹੀਦਾ\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: ਗਲਤ ਚੋਣ -- '%c'\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: ਚੋਣ ਲਈ ਆਰਗੂਮੈਂਟ ਚਾਹੀਦਾ ਹੈ --'%c'\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "ਮੈਮੋਰੀ ਖਤਮ ਹੋਈ"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "ਮੌਜੂਦਾ ਕਾਰਜਕਾਰੀ ਡਾਇਰੈਕਟਰੀ ਰਿਕਾਰਡ ਕਰਨ ਲਈ ਅਸਮਰੱਥ"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "ਸ਼�ਰੂਆਤੀ ਕਾਰਜਕਾਰੀ ਡਾਇਰੈਕਟਰੀ ਦੇਣ ਲਈ ਫੇਲ�ਹ"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "`"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "ਸਫ਼ਲ"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "ਕੋਈ ਮੇਲ ਨਹੀਂ"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "ਗਲਤ ਰੈਗੂਲਰ ਸਮੀਕਰਨ"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "ਗਲਤ ਕਰੈਕਟਰ ਕਲਾਸ ਨਾਂ"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:156
+#, fuzzy
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "ਨਾ ਮਿਲਦੇ [ ਜਾਂ [^"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "ਨਾ ਮਿਲਦੇ ( ਜਾਂ \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "ਨਾ-ਮਿਲਦੇ \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "ਗਲਤ ਅੰਤ ਰੇਜ਼"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "ਮੈਮੋਰੀ ਖਤਮ ਹੋਈ"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "ਨਿਯਮਤ ਸਮੀਕਰਨ ਬਹ�ਤ ਵੱਡੀ ਹੈ"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "ਨਾ ਮਿਲਦੇ ) ਜਾਂ \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "ਕੋਈ ਪਿਛਲਾ ਨਿਯਮਤ ਸਮੀਕਰਨ ਨਹੀਂ"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "%s (%s) ਵਲੋਂ ਪੈਕ ਕੀਤਾ\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "%s ਵਲੋਂ ਪੈਕੇਜ ਬਣਾਇਆ\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "%s ਨੇ ਲਿਖਿਆ।\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "%s ਅਤੇ %s ਨੇ ਲਿਖਿਆ\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "%s, %s, ਅਤੇ %s ਨੇ ਲਿਖਿਆ।\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"%s, %s, %s,\n"
+"ਅਤੇ %s ਨੇ ਲਿਖਿਆ\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"%s, %s, %s, %s,\n"
+"ਅਤੇ %s ਨੇ ਲਿਖਿਆ।\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"%s, %s, %s, %s, %s\n"
+"ਅਤੇ %s ਨੇ ਲਿਖਿਆ।\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"%s, %s, %s, %s, %s,\n"
+"%s ਅਤੇ %s ਨੇ ਲਿਖਿਆ।\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"%s. %s, %s, %s,\n"
+"%s, %s, %s ਅਤੇ %s\n"
+"ਨੇ ਲਿਖਿਆ।\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"%s. %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"ਅਤੇ %s ਨੇ ਲਿਖਿਆ।\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"%s, %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, ਅਤੇ ਹੋਰਾਂ ਨੇ ਲਿਖਿਆ।\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"ਬੱਗ ਰਿਪੋਰਟ ਦਿਉ: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "%s ਬੱਗ ਬਾਰੇ ਰਿਪੋਰਟ ਦਿਓ: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "%s ਮ�ੱਖ ਪੇਜ਼: <%s>\n"
+
+#: lib/version-etc.c:260
+#, fuzzy, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "ਗਨੂ ਸਾਫਟਵੇਅਰ ਦੀ ਵਰਤੋਂ ਲਈ ਆਮ ਮੱਦਦ ਵਾਸਤੇ: <http://www.gnu.org/gethelp/>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(ਸਟੈਂਡਰਡ ਆਉਟਪ�ੱਟ)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr ""
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "ਇੰਪ�ੱਟ ਗਿਣਤੀ ਕਰਨ ਲਈ ਬਹ�ਤ ਵੱਡੀ ਹੈ"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "ਬਾਈਨਰੀ ਫਾਇਲ %s ਮਿਲਦੀ ਹੈ\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "ਲਗਾਤਾਰ ਡਾਇਰੈਕਟਰੀ ਲੂਪ"
+
+#: src/grep.c:1899
+#, fuzzy, c-format
+msgid "%s: input file is also the output"
+msgstr "ਇੰਪ�ੱਟ ਫਾਇਲ %s ਆਉਟਪ�ੱਟ ਫਾਇਲ ਵੀ ਹੈ"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "ਵਰਤੋਂ: %s [ਚੋਣਾਂ]... ਪੈਟਰਨ [ਫਾਇਲ]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "ਹੋਰ ਜਾਣਕਾਰੀ ਲਈ '%s --help' ਨਾਲ ਕੋਸ਼ਿਸ਼ ਕਰੋ।\n"
+
+#: src/grep.c:1969
+#, fuzzy, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "ਹਰੇਕ ਫਾਇਲ (FILE) ਜਾਂ ਸਟੈਂਡਰਡ ਆਉਟਪ�ੱਟ ਲਈ ਪੈਟਰਨ ਦੀ ਖੋਜ।\n"
+
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"ਉਦਾਹਰਨ: %s -i 'hello world' menu.h main.c\n"
+"\n"
+"ਨਿਯਮਤ-ਸਮੀਕਰਨ (Regexp) ਚੋਣ ਅਤੇ ਚਲਾਉਣਾ:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr ""
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "ਗਲਤ ਮੈਚਰ %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "ਅਣਜਾਣ ਜੰਤਰ ਢੰਗ"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "ਗਲਤ ਵੱਧ ਤੋਂ ਵੱਧ ਗਿਣਤੀ"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "ਅਣਜਾਣ ਬਾਈਨਰੀ-ਫਾਇਲ ਕਿਸਮ"
+
+#: src/grep.c:2829
+#, fuzzy
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr "ਹੋਰਾਂ ਲਈ <http://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS> ਵੇਖੋ"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr ""
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr ""
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr ""
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr ""
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "ਮੈਮੋਰੀ ਖਤਮ ਹੋਈ"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr ""
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr ""
+
+#: src/pcresearch.c:327
+#, fuzzy, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "ਅੰਦਰੂਨੀ ਗਲਤੀ"
+
+#, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "ਸਾਵਧਾਨ: %s: %s"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "ਗਲਤ %s%s ਆਰਗੂਮੈਂਟ '%s'"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s ਆਰਗੂਮੈਂਟ '%s' ਬਹ�ਤ ਵੱਡਾ ਹੈ"
+
+#, fuzzy
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "%s ਮ�ੱਖ ਪੇਜ਼: <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "internal error"
+#~ msgstr "ਅੰਦਰੂਨੀ ਗਲਤੀ"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "ਮਾਈਕ ਹਾਇਰਟੇਲ"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: ਚੋਣ '--%s' ਇੱਕ ਆਰਗੂਮੈਂਟ ਨਹੀਂ ਲੈਂਦੀ\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: ਬੇ-ਪਛਾਣ ਚੋਣ '--%s'\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: ਚੋਣ '-W %s' ਸਧਾਰਨ ਹੈ।\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: ਚੋਣ '-W %s' ਲਈ ਕੋਈ ਆਰਗੂਮੈਂਟ ਨਹੀਂ ਚਾਹੀਦਾ\n"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "ਪੈਟਰਨ (PATTERN) ਮੂਲ ਰੂਪ ਵਿੱਚ ਇੱਕ ਨਿਯਮਤ ਸਕਰੀਨ (BRE) ਹ�ੰਦਾ ਹੈ।\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "lseek ਫੇਲ�ਹ ਹੈ"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "ਪੈਟਰਨ ਇੱਕ ਵਾਧੂ ਨਿਯਮਤ ਸਮੀਕਰਨ ਹੈ (ERE) ਹੈ।\n"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "ਗਨੂ Grep ਮ�ੱਖ ਪੇਜ਼: <%s>\n"
diff --git a/src/grep/po/pl.gmo b/src/grep/po/pl.gmo
new file mode 100644
index 0000000..514a0c7
--- /dev/null
+++ b/src/grep/po/pl.gmo
diff --git a/src/grep/po/pl.po b/src/grep/po/pl.po
new file mode 100644
index 0000000..3f509c3
--- /dev/null
+++ b/src/grep/po/pl.po
@@ -0,0 +1,756 @@
+# Polish translation of the GNU grep messages
+# Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2005, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Rafał Maszkowski <rzm@icm.edu.pl>, 1996-2002, 2005, 2007-2017, 2019-2021.
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-09 11:35+0200\n"
+"Last-Translator: Rafał Maszkowski <rzm@icm.edu.pl>\n"
+"Language-Team: Polish <translation-team-pl@lists.sourceforge.net>\n"
+"Language: pl\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8-bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "błędny argument %s dla %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "dwuznaczny argument %s dla %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Prawidłowe agrumenty to:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "błąd programu"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "przepełnienie stosu"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "błąd zapisu"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ nie do pary"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "błędna nazwa klasy znaków"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "składnia klasy znaków to [[:space:]], nie [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "niedokończona sekwencja \\"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "błędna zawartość \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "za duże wyrażenie regularne"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( nie do pary"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "brak specyfikacji składni"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") nie do pary"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Nieznany błąd systemowy"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: opcja „%s%s� jest niejednoznaczna\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: opcja „%s%s� jest niejednoznaczna; możliwości:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: nierozpoznana opcja „%s%s�\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: opcja „%s%s� nie może mieć argumentu\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: opcja „%s%s� wymaga argumentu\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: błędna opcja -- „%c�\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: opcja wymaga argumentu -- „%c�\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "pamięć wyczerpana"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "nie udało się zapisać bieżącego katalogu"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "nie udało się powrócić do początkowego katalogu"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "nie udało się ustawić trybu tekstowego/binarnego deskryptora pliku"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "„"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "�"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Udane"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Nie pasuje"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Błędne wyrażenie regularne"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Znak błędny dla bieżącego uporządkowania"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Błędna nazwa klasy znaków"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Końcowy ukośnik odwrotny"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Błędne odwołanie"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Nie pasujÄ…cy [, [^, [:, [., albo [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Nie pasujÄ…cy ( albo \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Nie pasujÄ…cy \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Błędna zawartość \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Błędny koniec zakresu"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Pamięć wyczerpana"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Błędne poprzedzające wyrażenie regularne"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Przedwczesny koniec wyrażenia regularnego"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Za duże wyrażenie regularne"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Nie pasujÄ…cy ) albo \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Brak poprzedniego wyrażenia regularnego"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Spakowane przez %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Spakowane przez %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Licencja GPLv3+: GNU GPL wersja 3 albo późniejsza %s\n"
+"To jest wolne oprogramowanie: możesz je modyfikować i rozpowszechniać.\n"
+"Autorzy NIE DAJÄ„ GWARANCJI w granicach dozwolonych prawem.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Napisany przez %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Napisany przez %s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Napisany przez %s, %s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Napisany przez %s, %s, %s\n"
+"i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Napisany przez %s, %s, %s,\n"
+"%s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Napisany przez %s, %s, %s,\n"
+"%s, %s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Napisany przez %s, %s, %s,\n"
+"%s, %s, %s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Napisany przez %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Napisany przez %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s i %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Napisany przez %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s i innych.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Raporty o błędach należy wysyłać do %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Raporty o błędach %s należy wysyłać do %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Strona domowa %s: %s\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Pomoc w używaniu oprogramowania GNU: %s\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standardowe wejście)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "błędny argument długości kontekstowej"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "danych wejściowych jest zbyt dużo do policzenia"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: plik binarny pasuje do wzorca"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: nieskończona pętla przeglądania katalogów"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: plik wejściowy jest również plikiem wyjściowym"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Składnia: %s [OPCJA]... WZORCE [PLIK] ...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Napisz „%s --help� żeby dowiedzieć się więcej.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Szukanie WZORCÓW w PLIKACH.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Przykład: %s -i 'hello world' menu.h main.c\n"
+"WZORCE mogą zawierać wiele wzorców w kolejnych liniach.\n"
+"\n"
+"Wybór i interpretacja wzorców:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     WZORCE są rozszerzonymi wyrażeniami regularnymi\n"
+"  -F, --fixed-strings       WZORCE sÄ… napisami\n"
+"  -G, --basic-regexp        WZORCE są podstawowymi wyrażeniami regularnymi\n"
+"  -P, --perl-regexp         WZORCE są wyrażeniami regularnymi perla\n"
+
+# synonimy: wielkie/małe litery, majuskuła/minuskuła, górna/dolna kaszta, górny/dolny rejestr liter; ogólnie: kaszta, rejestr
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=WZORCE       dopasowanie do WZORCOW\n"
+"  -f, --file=PLIK           użycie wzorców z PLIKU\n"
+"  -i, --ignore-case         ignorowanie rejestru liter\n"
+"      --no-ignore-case      bez ignorowania rejestru liter (domyślnie)\n"
+"  -w, --word-regexp         dopasowanie WZORCOW tylko do pełnych słów\n"
+"  -x, --line-regexp         dopasowanie WZORCOW tylko do całych linii\n"
+"  -z, --null-data           linie są zakończone bajtem 0, nie znakiem\n"
+"                            nowej linii\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Różne:\n"
+"  -s, --no-messages         bez komunikatów o błędach\n"
+"  -v, --invert-match        wybranie nie pasujÄ…cych linii\n"
+"  -V, --version             wypisanie informacji o wersji i zakończenie\n"
+"      --help                wypisanie tych informacji i zakończenie\n"
+"\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Sterowanie danymi wyjściowymi:\n"
+"  -m, --max-count=ILE       zatrzymanie po ILU wybranych liniach\n"
+"  -b, --byte-offset         wypisanie pozycji bajtów w wyniku\n"
+"  -n, --line-number         wypisanie numerów linii w wyniku\n"
+"      --line-buffered       opróżnienie bufora po każdej linii\n"
+"  -H, --with-filename       wypisanie nazwy pliku dla każdej linii\n"
+"  -h, --no-filename         bez nazwy pliku w liniach wyjściowych\n"
+"      --label=ETYKIETA      w wyniku ETYKIETA zastępuje nazwe pliku\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       pokazanie tylko niepustych części linii, które\n"
+"                              pasujÄ…\n"
+"  -q, --quiet, --silent     wyłączenie wypisywanie wyniku\n"
+"      --binary-files=TYP    założenie, że pliki binarne są typu TYP\n"
+"                            TYP to „binary�, „text� lub „without-match�.\n"
+"  -a, --text                równoważne --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        równoważne --binary-files=without-match\n"
+"  -d, --directories=DZIA�ANIE  jak się obchodzić z katalogami,\n"
+"                            DZIA�ANIE to „read� (czytanie), „recurse�\n"
+"                            (przeglądanie rekurencujne) albo „skip�\n"
+"                            (pominięcie).\n"
+"  -D, --devices=DZIA�ANIE   jak odwoływać się do urządzeń, FIFO i gniazd,\n"
+"                            DZIA�ANIE to „read� (czytaj) albo "
+"„skip� (pomiń)\n"
+"  -r, --recursive           równoważne --directories=recurse\n"
+"  -R, --dereference-recursive  podobnie, ale z podążaniem za dowiązaniami\n"
+"                              symbolicznymi\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=WZORZEC_PLIKOWY  przeszukiwane będą pliki pasujące do\n"
+"                              WZORCA_PLIKOWEGO\n"
+"      --exclude=WZORZEC_PLIKOWY  pliki pasujące do WZORCA_PLIKOWEGO będą\n"
+"                              pominięte\n"
+"      --exclude-from=PLIK   pominięcie plików pasujących do wzorców "
+"plikowych\n"
+"                              w PLIKU\n"
+"      --exclude-dir=WZORZEC_PLIKOWY  katalogi pasujÄ…ce do WZORCA_PLIKOWEGO\n"
+"                              będą pominięte\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  wypisanie tylko nazw PLIKÓW bez wybranych "
+"linii\n"
+"  -l, --files-with-matches  wypisanie tylko nazw PLIKÓW z wybranymi liniami\n"
+"  -c, --count               wypisanie tylko liczby wybranych linii w każdym\n"
+"                              PLIKU\n"
+"  -T, --initial-tab         wyrównanie linii przez TAB (jeżeli potrzebne)\n"
+"  -Z, --null                wypisanie bajtu 0 po każdej nazwie PLIKU\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Sterowanie kontekstem:\n"
+"  -B, --before-context=ILE  wypisanie ILU linii kontekstu przed\n"
+"  -A, --after-context=ILE   wypisanie ILU linii kontekstu po\n"
+"  -C, --context=ILE         wypisanie ILU linii kontekstu\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -ILE                      to samo co --context=ILE\n"
+"      --group-separator=SEP  wypisanie SEP między dopasowaniami z "
+"kontekstem\n"
+"      --no-group-separator  bez wypisania separatora między dopasowaniami z\n"
+"                              z kontekstem\n"
+"      --color[=KIEDY],\n"
+"      --colour[=KIEDY]      oznaczanie pasujących znaków,\n"
+"                            KIEDY to „always� (zawsze), „never� (nigdy)\n"
+"                            albo „auto� (automatycznie).\n"
+"  -U, --binary              bez usuwania znaków nowej linii na końcu\n"
+"                              (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Jeżeli PLIK to „-�, czytane jest standardowe wejście. Jeżeli PLIK nie jest\n"
+"podany i użyta jest opcja -r, czytany jest katalog ., natomiast - gdy -r "
+"nie\n"
+"jest podane. Jeżeli podano mniej niż dwa PLIKI, program włącza opcję -h.\n"
+"Zakończenie działania z kodem wyjściowym 0, jeżeli pasuje jakaś linia\n"
+"z 1, jeżeli nie; z 2, w razie błędów i gdy nie podano opcji -q.\n"
+
+#  viendo los fuentes , hay varias opciones
+#  que hay sin documentar. O quiza es que getopt() lo he entendido mal
+#  Son las opciones X ( requiere argumento ) , switchs  -c, -b, -L e -y
+#  grep.c:622 ->
+#  opt = getopt(argc, argv, "0123456789A:B:CEFGVX:bce:f:hiLlnqsvwxy"
+#  grep --help ->
+#  usage: grep [-[[AB] ]<num>] [-[CEFGVchilnqsvwx]] [-[ef]] <expr> [<files...>]
+#  La opción -X es a la que corresponde esta línea.
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "podano sprzeczne wzorce"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Dopasowywanie wzorców w stylu perla nie działa w wersji zbudowanej z --"
+"disable-perl-regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "błędna dopasowanie %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "nieznany sposób przeglądania urządzeń"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "uwaga: opcja --unix-byte-offsets (-u( jest przestarzała"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "błędna maksymalna liczba powtórzeń"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "nieznany typ pliku binarnego"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Program napisany przez Mike'a Haertela i innych, zobacz\n"
+"https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "nie udało się zaalokować pamięci dla stosu PCRE JIT"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P działa tylko kodowaniem jednobajtowym albo UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "opcja -P może być użyta tylko do pojedynczego wzorca"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "błąd wewnętrzny (nigdy nie powinien się zdarzyć)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "przekroczony limit długości linii PCRE"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: pamięć wyczerpana"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: wyczerpany stos JIT PCRE"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: przekroczony limit analizy wstecznej PCRE"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: przekroczony limit rekursji PCRE"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: błąd wewnętrzny PCRE: %d"
diff --git a/src/grep/po/pt.gmo b/src/grep/po/pt.gmo
new file mode 100644
index 0000000..70f3c1c
--- /dev/null
+++ b/src/grep/po/pt.gmo
diff --git a/src/grep/po/pt.po b/src/grep/po/pt.po
new file mode 100644
index 0000000..3d1ddcd
--- /dev/null
+++ b/src/grep/po/pt.po
@@ -0,0 +1,953 @@
+# Portuguese (Portugal) translation for the grep package.
+# Copyright (C) 2018 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Pedro Albuquerque <pmra@protonmail.com>, 2018, 2019, 2020, 2021.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-09 10:42+0100\n"
+"Last-Translator: Pedro Albuquerque <pmra@protonmail.com>\n"
+"Language-Team: Portuguese <translation-team-pt@lists.sourceforge.net>\n"
+"Language: pt\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: Poedit 2.3\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "argumento inválido %s para %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "argumento ambíguo %s para %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Os argumentos válidos são:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "erro de programa"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "transporte da pilha"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "erro de escrita"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ sem par"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "classe de carácter inválida"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "a sintaxe da classe de carácter é [[:espaço:]], não [:espaço:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "não terminado\\escape"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "conteúdo inválido de \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "expressão regular muito grande"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( sem par"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "sintaxe não especificada"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") sem par"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Erro de sistema desconhecido"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: a opção \"%s%s\" é ambígua\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: a opção \"%s%s\" é ambígua; possibilidades:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: opção \"%s%s\" desconhecida\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: a opção \"%s%s\" não permite um argumento\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "\"%s: a opção \"%s%s\" requer um argumento\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: opção inválida -- \"%c\"\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: a opção requer um argumento -- \"%c\"\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "memória esgotada"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "impossível gravar a pasta de trabalho actual"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "falha ao voltar à pasta de trabalho inicial"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "falha ao definir modo texto/binário do descritor de ficheiro"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "\""
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "\""
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Sucesso"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Sem par"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Expressão regular inválida"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Carácter de agrupamento inválido"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Nome de classe de carácter inválido"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Barra invertida final"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Referência de retorno inválida"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "[, [^, [:, [., ou [= sem par"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( ou \\( sem par"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ sem par"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Conteúdo inválido de \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Final de intervalo inválido"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Memória esgotada"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Expressão regular precedente inválida"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Fim prematuro de expressão regular"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Expressão regular muito grande"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") ou \\) sem par"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Sem expressão regular prévia"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Empacotado por %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Empacotado por %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(©)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Licença GPLv3+: GNU GPL versão 3 ou posterior <%s>\n"
+"Este é um programa grátis: pode alterá-lo e redistribuí-lo.\n"
+"Não há QUALQUER GARANTIA, até ao limite da Lei.\n"
+"\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Escrito por %s\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Escrito por %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Escrito por %s, %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s\n"
+"e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s e outros.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Reportar erros a: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Reportar %s erros a: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Página inicial %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Ajuda geral para uso de programas GNU: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(entrada padrão)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "argumento de tamanho de contexto inválido"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "entrada muito grande para contar"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: ficheiro binário coincide"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: aviso: ciclo de pasta recursivo"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: ficheiro de entrada também é a saída"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Uso: %s [OPÇÃO]... PADRÕES [FICHEIRO]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Tente \"%s --help\" para mais informação.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Procurar por PADRÕES em cada FICHEIRO\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Exemplo: %s -i 'hello world' menu.h main.c\n"
+"PADRÕES pode conter múltiplos padrões separados por newline.\n"
+"\n"
+"Selecção e interpretação de padrão:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     PADRÕES são expressões regulares estendidas\n"
+"  -F, --fixed-strings       PADRÕES são cadeias\n"
+"  -G, --basic-regexp        PADRÕES são expressões regulares básicas\n"
+"  -P, --perl-regexp         PADRÕES são expressões regulares Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=PADRÕES      usar PADRÕES para comparação\n"
+"  -f, --file=FICHEIRO       ler PADRÕES do FICHEIRO\n"
+"  -i, --ignore-case         ignorar diferenças entre maiúsculas e "
+"minúsculas\n"
+"      --no-ignore-case      não ignorar diferenças de maiúsculas "
+"(predefinição)\n"
+"  -w, --word-regexp         comparar só palavras completas\n"
+"  -x, --line-regexp         comparar só linhas completas\n"
+"  -z, --null-data           uma linha de dados termina com o byte 0, não com "
+"newline\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Diversos:\\n\"\n"
+"  -s, --no-messages         suprime mensagens de erro\n"
+"  -v, --invert-match        selecciona linhas que não contenham PADRÃO\n"
+"  -V, --version             mostra informação de versão e sai\n"
+"      --help                mostra esta mensagem e sai\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Controlo de saída:\n"
+"  -m, --max-count=NUM       pára após NUM linhas seleccionadas\n"
+"  -b, --byte-offset         imprime o desvio de byte com as linhas de saída\n"
+"  -n, --line-number         imprime o nº de linha com as linhas de saída\n"
+"      --line-buffered       limpa a saída em cada linha\n"
+"  -H, --with-filename       imprime o nome de ficheiro com as linhas de "
+"saída\n"
+"  -h, --no-filename         suprime o prefixo do nome de ficheiro na saída\n"
+"      --label=RÓTULO        usa RÓTULO como prefixo de nome de ficheiro de "
+"entrada padrão\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       mostra só partes não-vazias de linhas que "
+"coincidem\n"
+"  -q, --quiet, --silent     suprime toda a saída normal\n"
+"      --binary-files=TYPE   assume que ficheiros binários são TIPO;\n"
+"                            TIPO é \"binary\", \"text\" ou \"without-match"
+"\"\n"
+"  -a, --text                equivalente a --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        equivalente a --binary-files=without-match\n"
+"  -d, --directories=ACÇÃO   COMO GERIR PASTAS;\n"
+"                            ACÇÃO é 'read', 'recurse' ou 'skip'\n"
+"  -D, --devices=ACÇÃO       COMO GERIR DISPOSITIVOS, FIFOs e sockets;\n"
+"                            ACÇÃO é 'read' ou 'skip'\n"
+"  -r, --recursive           como --directories=recurse\n"
+"  -R, --dereference-recursive  igual, mas segue todas as symlinks\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB        procura só em ficheiros que contêm GLOB (um "
+"padrão de ficheiro)\n"
+"      --exclude=GLOB        salta ficheiros e pastas que contêm GLOB\n"
+"      --exclude-from=FICH   salta ficheiros que contêm qualquer padrão de "
+"FICHEIRO\n"
+"      --exclude-dir=GLOB    salta pastas que contêm GLOB\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match imprime só nomes de FICHEIROs sem linhas "
+"seleccionadas\n"
+"  -l, --files-with-matches  imprime só nomes de FICHEIROs com linhas "
+"seleccionadas\n"
+"  -c, --count               imprime só um nº  de linhas seleccionadas por "
+"FICHEIRO\n"
+"  -T, --initial-tab         alinha tabulações (se necessário)\n"
+"  -Z, --null                imprime byte 0 após o nome de FICHEIRO\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  imprime NUM linhas de contexto inicial\n"
+"  -A, --after-context=NUM   imprime NUM linhas de contexto final\n"
+"  -C, --context=NUM         imprime NUM linhas de contexto de saída\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      igual a --context=NUM\n"
+"      --group-separator=SEP  imprimir SEP na linha entre correspondências "
+"com contexto\n"
+"      --no-group-separator  não imprimir separador para correspondências com "
+"contexto\n"
+"      --color[=QUANDO],\n"
+"      --colour[=QUANDO]       usar marcadores para realçar as cadeias "
+"coincidentes;\n"
+"                            QUANDO é \"always\", \"never\" ou \"auto\"\n"
+"  -U, --binary              não eliminar caracteres CR em EOL (MSDOS/"
+"Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Quando FICHEIRO é '-', lê a entrada padrão. Sem FICH, lê '.' se\n"
+"recursivo, senão lê '-'. Com menos de dois FICHs, assume -h.\n"
+"O estado da saída é 0 se qualquer linha for seleccionada, senão é 1;\n"
+"se ocorrer um erro e -q não for dado, o estado da saída é 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "especificou comparadores em conflito"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Comparação Perl não suportada numa compilação --disable-perl-regexp build"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "comparador %s inválido"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "método dispositivos desconhecidos"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "aviso: --unix-byte-offsets (-u) está obsoleto"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "número máximo inválido"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "tipo de ficheiro binário desconhecido"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Escrito por Mike Haertel e outros; veja\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "falha ao alocar memória para a pilha PCRE JIT"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P só suporta idiomas unibyte e UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "a opção -P só suporta um padrão"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "erro interno (nunca devia acontecer)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "excedido o limite de tamanho da linha de PCRE"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: memória esgotada"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: pilha PCRE JIT esgotada"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: excedido o limite de retrocesso de PCRE"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: limite de recursividade de PCRE excedido"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: erro interno de PCRE: %d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "aviso: GREP_OPTIONS é obsoleto; por favor, use um aliás ou um script"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "aviso: %s: %s"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "Página inicial %s: <https://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "Argumento \"%s\" de %s%s inválido"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "sufixo inválido no argumento \"%s\" de %s%s"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "argumento \"%s\" de %s%s muito grande"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "erro interno"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "contador de repetição não terminado"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "contador de repetição mal formado"
+
+#~ msgid "out of memory"
+#~ msgstr "sem memória"
+
+#~ msgid "writing output"
+#~ msgstr "a escrever o resultado"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Utilização: %s [OPÇÃO]... PADRÃO [FICHEIRO] ...\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE\n"
+#~ "                            TYPE is 'binary', 'text', or 'without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories\n"
+#~ "                            ACTION is 'read', 'recurse', or 'skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets\n"
+#~ "                            ACTION is 'read' or 'skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=PATTERN     files that match PATTERN will be examined\n"
+#~ "      --exclude=PATTERN     files that match PATTERN will be skipped.\n"
+#~ "      --exclude-from=FILE   files that match PATTERN in FILE will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match only print FILE names containing no match\n"
+#~ "  -l, --files-with-matches  only print FILE names containing matches\n"
+#~ "  -c, --count               only print a count of matching lines per "
+#~ "FILE\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Controlo de resultados\n"
+#~ "  -m, --max-count=NUM       pára após NUM resultados\n"
+#~ "  -b, --byte-offset         apresenta o 'byte offset' nos resultados\n"
+#~ "  -n, --line-number         apresenta o número de linha nos resultados\n"
+#~ "      --line-buffered       'flush output' em cada linha\n"
+#~ "  -H, --with-filename       apresenta o nome do ficheiro para cada "
+#~ "resultado\n"
+#~ "  -h, --no-filename         não apresenta o nome do ficheiro nos "
+#~ "resultados\n"
+#~ "      --label=NOME          utiliza NOME de ficheiro para o «standard "
+#~ "input»\n"
+#~ "  -o, --only-matching       apresenta só a parte da linha que satisfaz "
+#~ "PADRÃO\n"
+#~ "  -q, --quiet, --silent     suprime toda a apresentação de resultados\n"
+#~ "      --binary-files=TIPO   assume que ficheiros binários são do TIPO\n"
+#~ "                            TIPO pode ser 'binary', 'text', ou 'without-"
+#~ "match'\n"
+#~ "  -a, --text                equivalente a --binary-files=text\n"
+#~ "  -I                        equivalente a --binary-files=without-match\n"
+#~ "  -d, --directories=ACÇÃO   como lidar com directorias\n"
+#~ "                            ACÇÃO pode ser 'read', 'recurse', ou 'skip'\n"
+#~ "  -D, --devices=ACÇÃO       como lidar com devices, FIFOs e sockets\\n\"\n"
+#~ "                            ACÇÃO pode ser 'read' ou 'skip'\n"
+#~ "  -R, -r, --recursive       equivalente a --directories=recurse\n"
+#~ "      --include=PADRÃO      ficheiros que satisfaçam PADRÃO serão "
+#~ "examinados\n"
+#~ "      --exclude=PADRÃO      ficheiros que satisfaçam PADRÃo serão "
+#~ "ignorados\n"
+#~ "      --exclude-from=FICH   ficheiros que satisfaçam PADRÃO indicado em "
+#~ "FICH\n"
+#~ "                            serão ignorados\n"
+#~ "  -L, --files-without-match apresenta apenas FICHEIROS que não satisfaçam "
+#~ "PADRÃO\n"
+#~ "  -l, --files-with-matches  apresenta apenas FICHEIROS que satisfaçam o "
+#~ "PADRÃO\n"
+#~ "  -c, --count               apresenta para cada FICHEIRO um contador com "
+#~ "o\n"
+#~ "                            número de linhas que satisfazem PADRÃO\n"
+#~ "  -Z, --null                imprimir o byte 0 após cada nome de FICHEIRO\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Context control:\n"
+#~ "  -B, --before-context=NUM  print NUM lines of leading context\n"
+#~ "  -A, --after-context=NUM   print NUM lines of trailing context\n"
+#~ "  -C, --context=NUM         print NUM lines of output context\n"
+#~ "  -NUM                      same as --context=NUM\n"
+#~ "      --color[=WHEN],\n"
+#~ "      --colour[=WHEN]       use markers to distinguish the matching "
+#~ "string\n"
+#~ "                            WHEN may be `always', `never' or `auto'.\n"
+#~ "  -U, --binary              do not strip CR characters at EOL (MSDOS)\n"
+#~ "  -u, --unix-byte-offsets   report offsets as if CRs were not there "
+#~ "(MSDOS)\n"
+#~ "\n"
+#~ "`egrep' means `grep -E'.  `fgrep' means `grep -F'.\n"
+#~ "With no FILE, or when FILE is -, read standard input.  If less than\n"
+#~ "two FILEs given, assume -h.  Exit status is 0 if match, 1 if no match,\n"
+#~ "and 2 if trouble.\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Controlo de contexto:\n"
+#~ "  -B, --before-context=NUM  apresenta NUM linhas de contexto anteriores a "
+#~ "PADRÃO\n"
+#~ "  -A, --after-context=NUM   apresenta NUM linhas de contexto a seguir a "
+#~ "PADRÃO\n"
+#~ "  -C, --context=NUM         apresenta NUM linhas de contexto no "
+#~ "resultado\n"
+#~ "  -NUM                      equivalente a --context=NUM\n"
+#~ "      --color[=QUANDO],\n"
+#~ "      --colour[=QUANDO]     utiliza marcadores para distinguir as partes "
+#~ "que\n"
+#~ "                            satisfazem o PADRÃO\n"
+#~ "                            QUANDO pode ser `always', `never' ou `auto'\n"
+#~ "  -U, --binary              não remover caracteres CR em EOL (MSDOS)\n"
+#~ "  -u, --unix-byte-offsets   reportar «offsets» como se não houvesse CRs "
+#~ "(MSDOS)\n"
+#~ "\n"
+#~ "`egrep' é equivalente a  `grep -E'.  `fgrep' é equivalente a `grep -F'\n"
+#~ "Sem FICHEIRO ou quando FICHEIRO é -, ler o «standard input». Se forem "
+#~ "dados\n"
+#~ "dois FICHEIROS, assume -h. Devolve 0 se encontrar pelo menos uma "
+#~ "occorência\n"
+#~ "de PADRÃO, 1 se não encontrar, 2 se tiver algum problema.\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Report bugs to <bug-gnu-utils@gnu.org>.\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Reporte «bugs» para <bug-gnu-utils@gnu.org>.\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "método para acesso a directorias desconhecido"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+#~ msgstr ""
+#~ "Direitos de autor 1988, 1992-1999, 2000, 2001 Free Software Foundation, "
+#~ "Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions. There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Este software é software livre; leia o código fonte para saber as "
+#~ "condições.\n"
+#~ "NÃO existe qualquer garantia; nem mesmo sobre COMERCIALIZAÇÃO ou "
+#~ "CONFORMIDADE\n"
+#~ "PARA UM DETERMINADO FIM.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "A opção -P e -z não podem ser combinadas"
+
+#~ msgid "%s: option `--%s' doesn't allow an argument\n"
+#~ msgstr "%s: a opção `%s' não aceita um argumento\n"
+
+#~ msgid "%s: unrecognized option `--%s'\n"
+#~ msgstr "%s: opção `--%s' desconhecida\n"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: opção ilegal -- %c\n"
+
+#~ msgid "%s: option `-W %s' is ambiguous\n"
+#~ msgstr "%s: a opção `-W %s' é ambígua\n"
+
+#~ msgid "%s: option `-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: a opção `-W %s' não aceita um argumento\n"
diff --git a/src/grep/po/pt_BR.gmo b/src/grep/po/pt_BR.gmo
new file mode 100644
index 0000000..aef8ec7
--- /dev/null
+++ b/src/grep/po/pt_BR.gmo
diff --git a/src/grep/po/pt_BR.po b/src/grep/po/pt_BR.po
new file mode 100644
index 0000000..68b3706
--- /dev/null
+++ b/src/grep/po/pt_BR.po
@@ -0,0 +1,966 @@
+# translation of grep-3.5.16.po to Brazilian Portuguese
+# This file is distributed under the same license as the grep package.
+# grep: translation to Brazilian Portuguese (pt_BR)
+# Copyright (C) 2002, 2007, 2008, 2009, 2011, 2012, 2014 Free Software Foundation, Inc.
+#
+# Enrique Melero Gómez <melero@eurolands.com>, 1996.
+# Rodrigo Stulzer Lopes <rodrigo@conectiva.com.br>, 1997.
+# Santiago Vila Doncel <sanvila@unex.es>, 1997, 1998, 1999, 2000, 2001, 2002.
+# Alexandre Folle de Menezes <afmenez@terra.com.br>, 2002.
+# Rodolfo Ribeiro Gomes <rodolforg@gmail.com>, 2007-2020.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU grep-3.5.16\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2020-11-04 09:30-0300\n"
+"Last-Translator: Rodolfo Ribeiro Gomes <rodolforg@gmail.com>\n"
+"Language-Team: Brazilian Portuguese <ldpbr-translation@lists.sourceforge."
+"net>\n"
+"Language: pt_BR\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=2; plural=(n > 1);\n"
+"X-Generator: Gtranslator 3.38.0\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "%s e� um argumento inva�lido para %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "%s e� um argumento ambíguo para %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Os argumentos válidos são:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "erro do programa"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "estouro de pilha"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "erro de escrita"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ sem correspondente"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "categoria de caracteres inválida"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "a sintaxe de categoria de caracteres é [[:space:]], e não [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "escape \\ não terminado"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "conteúdo inválido de \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "expressão regular grande demais"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( sem correspondente"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "nenhuma sintaxe especificada"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") sem correspondente"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Erro desconhecido de sistema"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: a opção \"%s%s\" é ambígua\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: a opção \"%s%s\" é ambígua; possibilidades:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: a opção \"%s%s\" é desconhecida\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: a opção \"%s%s\" não aceita argumentos\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: a opção \"%s%s\" requer um argumento\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: a opção é inválida -- \"%c\"\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: a opção exige um argumento -- \"%c\"\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "memória esgotada"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "incapaz de memorizar o diretório de trabalho atual"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "falhou em retornar ao diretório de trabalho inicial"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "falhou em definir o modo texto/binário do descritor de arquivo"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "\""
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "\""
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Sucesso"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Nenhuma ocorrência do padrão"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Expressão regular inválida"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Caractere inválido de colagem"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Nome inválido de categoria de caracteres"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Barra invertida excedente ao final"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Retro-referência inválida"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Sem correspondência para [, [^, [:, [. ou [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( ou \\( sem correspondente"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ sem correspondente"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Conteúdo inválido de \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Fim inválido de intervalo"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Memória esgotada"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Expressão regular precedente é inválida"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Fim prematuro da expressão regular"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Expressão regular grande demais"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") ou \\) sem correspondente"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Nenhuma expressão regular anterior"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Empacotado por %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Empacotado por %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Licença GPLv3+: GNU GPL versão 3 ou superior <%s>.\n"
+"Este é um software livre: você é livre para alterá-lo e redistribuí-lo.\n"
+"NÃO H� GARANTIAS, na máxima extensão permitida por lei.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Escrito por %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Escrito por %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Escrito por %s, %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s\n"
+"e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s e %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Escrito por %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s e outros.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Relate os problemas para: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Relate os problemas de %s para: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "pa�gina de %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Ajuda geral sobre uso de software GNU: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(entrada padrão)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "argumento inválido para comprimento do contexto"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "entrada longa demais para contar"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: arquivo binário coincide com o padrão"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: aviso: recursão cíclica de diretório"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: o arquivo de entrada também é o de saída"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Uso: %s [OPÇÃO]... PADRÕES [ARQUIVO]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Experimente \"%s --help\" para mais informações.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Busca por PADRÕES em cada ARQUIVO.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Exemplo: %s -i \"olá, mundo\" menu.h main.c\n"
+"PADRÕES pode conter múltiplos padrões separados por nova-linha.\n"
+"\n"
+"Seleção e interpretação de padrão:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     PADRÕES são expressões regulares estendidas\n"
+"  -F, --fixed-strings       PADRÕES são textos\n"
+"  -G, --basic-regexp        PADRÕES são expressões regulares básicas\n"
+"  -P, --perl-regexp         PADRÕES são expressões regulares Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=PADRÕES      usa PADRÕES para coincidir\n"
+"  -f, --file=ARQUIVO        obtém PADRÕES contidos no ARQUIVO\n"
+"  -i, --ignore-case         ignora diferenças entre maiúsculas/minúsculas "
+"nos\n"
+"                              padrões e dados\n"
+"      --no-ignore-case      não ignora diferença de maiusculizações "
+"(padrão)\n"
+"  -w, --word-regexp         coincide só com palavras completas\n"
+"  -x, --line-regexp         coincide só com linhas inteiras\n"
+"  -z, --null-data           uma linha de dados termina com byte 0, e não "
+"com\n"
+"                              caractere de nova linha\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Miscelânea:\n"
+"  -s, --no-messages         suprime mensagens de erro\n"
+"  -v, --invert-match        seleciona somente linhas não coincidentes\n"
+"  -V, --version             mostra informações sobre versão e sai\n"
+"      --help                exibe esta ajuda e sai\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Controle de saída:\n"
+"  -m, --max-count=NÚM       interrompe depois de NÚM ocorrências\n"
+"  -b, --byte-offset         emite a posição em bytes nas linhas de saída\n"
+"  -n, --line-number         emite o número da linha nas linhas de saída\n"
+"      --line-buffered       libera a saída a cada linha\n"
+"  -H, --with-filename       emite o nome do arquivo nas linhas de saída\n"
+"  -h, --no-filename         inibe o nome de arquivo na saída\n"
+"      --label=RÓTULO        usa RÓTULO como nome de arquivo para entrada "
+"padrão\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       mostra apenas as partes não-vazias das linhas "
+"que\n"
+"                              coincidem com os PADRÕES\n"
+"  -q, --quiet, --silent     inibe todas as mensagens normais de saída\n"
+"      --binary-files=TIPO   assume que arquivos binários são TIPO;\n"
+"                             TIPO pode ser \\\"binary\\\" (binário), \\\"text"
+"\\\" (texto),\n"
+"                             ou \\\"without-match\\\" (nunca coincide)\n"
+"  -a, --text                equivalente a --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        equivalente a --binary-files=without-match\n"
+"  -d, --directories=AÇÃO    como tratar diretórios;\n"
+"                             AÇÃO pode ser \\\"read\\\" (ler), \\\"recurse\\"
+"\" (recursivo),\n"
+"                             ou \\\"skip\\\" (ignorar)\n"
+"  -D, --devices=AÇÃO        como tratar dispositivos, FIFOs e soquetes;\n"
+"                             AÇÃO pode ser \\\"read\\\" (ler) ou \\\"skip\\"
+"\" (ignorar)\n"
+"  -r, --recursive           equivalente a --directories=recurse\n"
+"  -R, --dereference-recursive  similar, mas segue todas as ligações "
+"simbólicas\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=PADRÃO      busca apenas em arquivos que casam com PADRÃO\n"
+"      --exclude=PADRÃO      ignora arquivos que casam com PADRÃO\n"
+"      --exclude-from=ARQUI  ignora arquivos que casam com algum padrão de\n"
+"                              arquivo contido em ARQUIvo\n"
+"      --exclude-dir=PADRÃO  ignora diretórios que casam com PADRÃO\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match emite apenas os nomes dos ARQUIVOs sem linhas\n"
+"                              selecionadas\n"
+"  -l, --files-with-matches  emite apenas os nomes dos ARQUIVOs com linhas\n"
+"                              selecionadas\n"
+"  -c, --count               emite apenas a contagem de linhas selecionadas\n"
+"                              por ARQUIVO\n"
+"  -T, --initial-tab         alinha por tabulação (se necessário)\n"
+"  -Z, --null                emite byte 0 depois do nome do ARQUIVO\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Controle de contexto:\n"
+"  -B, --before-context=NÚM  emite NÚM linhas de contexto anteriores\n"
+"  -A, --after-context=NÚM   emite NÚM linhas de contexto posteriores\n"
+"  -C, --context=NÚM         emite NÚM linhas de contexto de saída\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NÚM                      o mesmo que --context=NÚM\n"
+"      --color[=QUANDO],\n"
+"      --colour[=QUANDO]     usa marcadores para destacar os textos "
+"coincidentes;\n"
+"                              QUANDO pode ser \"always\" (sempre), \"never"
+"\"\n"
+"                              (nunca) ou \"auto\" (automático).\n"
+"  -U, --binary              não exclui caracteres CR no fim de linha (MSDOS/"
+"Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Quando ARQUIVO é \"-\", lê da entrada padrão. Se ARQUIVO não é informado, lê "
+"\".\"\n"
+"se recursivo, senão lê \"-\". Se há menos que dois ARQUIVOs, assume-se -h.\n"
+"O estado de saída é 0 se alguma linha é selecionada, 1 em caso contrário;\n"
+"se ocorrer algum erro e -q não é especificado, o estado de saída é 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "especificou-se padrões de busca conflitantes"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"não há suporte para coincidir conforme Perl em uma compilação com --disable-"
+"perl-regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "comparador inválido %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "método desconhecido de dispositivos"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "valor máximo inválido"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "tipo de arquivo binário desconhecido"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Escrito por Mike Haertel e outros; veja\n"
+"<http://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "falhou em alocar memória para a pilha de PCRE JIT"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr ""
+"-P só oferece suporte a localidades unibyte (um caractere por byte) e UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "a opção -P só oferece suporte a apenas um único padrão"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "erro interno (nunca deveria acontecer)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "atingiu o limite de comprimento de linha das PCRE"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: memória esgotada"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: pilha PCRE JIT estourada"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: atingiu o limite de backtracking das PCRE"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: atingiu o limite de recursão das PCRE"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: erro interno de PCRE: %d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "aviso: a variável de ambiente GREP_OPTIONS está obsoleta; use um alias ou "
+#~ "script"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "aviso: %s: %s"
+
+#~ msgid "%s home page: <http://www.gnu.org/software/%s/>\n"
+#~ msgstr "pa�gina de %s: <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "argumento inva�lido para %s%s: \"%s\""
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "sufixo inva�lido no argumento para %s%s: \"%s\""
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s: argumento \"%s\" é grande demais"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "erro interno"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: a opção \"--%s\" não aceita argumentos\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: a opção \"--%s\" é desconhecida\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: a opção \"-W %s\" é ambígua\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: a opção \"-W %s\" não aceita argumentos\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: a opção \"-W %s\" requer um argumento\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "a movimentação pelo arquivo (lseek) falhou"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "PADRÃO é, por padrão, uma expressão regular básica (BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "\"egrep\" significa \"grep -E\". \"fgrep\" significa \"grep -F\".\n"
+#~ "A invocação direta tanto por \"egrep\" como por \"fgrep\" está obsoleta.\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "não há suporte para ^ ou $ sem escape ao usar -Pz"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "PADRÃO é uma expressão regular estendida (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr "Invocar como \"egrep\" está obsoleto; use \"grep -E\".\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr ""
+#~ "PADRÃO é um conjunto de textos fixos separados por caractere de nova "
+#~ "linha.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr "Invocar como \"fgrep\" está obsoleto; use \"grep -F\".\n"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Página do GNU Grep: <%s>\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s só pode usar a sintaxe de padrão %s"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "a opção --mmap não faz nada desde 2010"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "contador de repetição não terminado"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "contador de repetição mal formulado"
+
+#~ msgid "writing output"
+#~ msgstr "escrevendo na saída"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "em GREP_COLORS=\"%s\", o recurso \"%s\" precisa de um valor (\"=...\"); "
+#~ "ignorado"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "em GREP_COLORS=\"%s\", o recurso \"%s\" é booleano e não pode assumir um "
+#~ "valor (\"=%s\"); ignorado"
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "em GREP_COLORS=\"%s\", o recurso \"%s\" %s."
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "interrompido o processamento da variável mal formatada GREP_COLORS=\"%s\" "
+#~ "no trecho de texto restante \"%s\""
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE;\n"
+#~ "                            TYPE is `binary', `text', or `without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories;\n"
+#~ "                            ACTION is `read', `recurse', or `skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+#~ "                            ACTION is `read' or `skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=FILE_PATTERN  search only files that match FILE_PATTERN\n"
+#~ "      --exclude=FILE_PATTERN  skip files and directories matching "
+#~ "FILE_PATTERN\n"
+#~ "      --exclude-from=FILE   skip files matching any file pattern from "
+#~ "FILE\n"
+#~ "      --exclude-dir=PATTERN directories that match PATTERN will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match print only names of FILEs containing no "
+#~ "match\n"
+#~ "  -l, --files-with-matches  print only names of FILEs containing matches\n"
+#~ "  -c, --count               print only a count of matching lines per "
+#~ "FILE\n"
+#~ "  -T, --initial-tab         make tabs line up (if needed)\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Controle de saída:\n"
+#~ "  -m, --max-count=NÚM       interrompe depois de NÚM coincidências\n"
+#~ "  -b, --byte-offset         exibe a posição em bytes junto com a saída\n"
+#~ "  -n, --line-number         exibe o número da linha junto com a saída\n"
+#~ "      --line-buffered       libera a saída a cada linha\n"
+#~ "  -H, --with-filename       exibe o nome do arquivo para cada padrão "
+#~ "encontrado\n"
+#~ "  -h, --no-filename         inibe o nome de arquivo na saída\n"
+#~ "      --label=RÓTULO        mostra RÓTULO como o nome da entrada padrão\n"
+#~ "  -o, --only-matching       mostra apenas a parte da linha que coincide "
+#~ "com\n"
+#~ "                              o PADRÃO\n"
+#~ "  -q, --quiet, --silent     inibe todas as mensagens de saída normais\n"
+#~ "      --binary-files=TIPO   assume que arquivos binários são TIPO\n"
+#~ "                             TIPO pode ser \"binary\" (binário), \"text"
+#~ "\" (texto),\n"
+#~ "                             ou \"without-match\" (nunca coincide).\n"
+#~ "  -a, --text                equivalente a --binary-files=text\n"
+#~ "  -I                        equivalente a --binary-files=without-match\n"
+#~ "  -d, --directories=AÇÃO    como tratar diretórios;\n"
+#~ "                            AÇÃO pode ser \"read\" (ler), \"recurse"
+#~ "\" (recursivo),\n"
+#~ "                            ou \"skip\" (ignorar).\n"
+#~ "  -D, --devices=AÇÃO        como tratar dispositivos, FIFOs e soquetes;\n"
+#~ "                            AÇÃO pode ser \"read\" (ler) ou \"skip"
+#~ "\" (ignorar)\n"
+#~ "  -R, -r, --recursive       equivalente a --directories=recurse.\n"
+#~ "      --include=PADRÃO_ARQ  busca apenas em arquivos que casam com "
+#~ "PADRÃO_ARQ\n"
+#~ "      --exclude=PADRÃO_ARQ  ignora arquivos que casam com PADRÃO_ARQ\n"
+#~ "      --exclude-from=ARQUI  ignora arquivos que casam com algum padrão "
+#~ "escrito\n"
+#~ "                              em ARQUIvo\n"
+#~ "      --exclude-dir=PADRÃO  diretórios que casam com PADRÃO serão "
+#~ "ignorados\n"
+#~ "  -L, --files-without-match exibe os nomes somente dos arquivos não "
+#~ "casam\n"
+#~ "                              com o PADRÃO\n"
+#~ "  -l, --files-with-matches  exibe os nomes somente dos arquivos casam "
+#~ "com\n"
+#~ "                              o padrão\n"
+#~ "  -c, --count               exibe a contagem de linhas por aquivo que "
+#~ "casam\n"
+#~ "                              com o padrão\n"
+#~ "  -T, --initial-tab         alinha por tabulação (se necessário)\n"
+#~ "  -Z, --null                emite byte 0 depois do nome do ARQUIVO\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "método desconhecido de diretórios"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "As opções -P e -z não podem ser combinadas"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: opção ilegal -- %c\n"
diff --git a/src/grep/po/quot.sed b/src/grep/po/quot.sed
new file mode 100644
index 0000000..0122c46
--- /dev/null
+++ b/src/grep/po/quot.sed
@@ -0,0 +1,6 @@
+s/"\([^"]*\)"/“\1�/g
+s/`\([^`']*\)'/‘\1’/g
+s/ '\([^`']*\)' / ‘\1’ /g
+s/ '\([^`']*\)'$/ ‘\1’/g
+s/^'\([^`']*\)' /‘\1’ /g
+s/“�/""/g
diff --git a/src/grep/po/remove-potcdate.sin b/src/grep/po/remove-potcdate.sin
new file mode 100644
index 0000000..2436c49
--- /dev/null
+++ b/src/grep/po/remove-potcdate.sin
@@ -0,0 +1,19 @@
+# Sed script that remove the POT-Creation-Date line in the header entry
+# from a POT file.
+#
+# The distinction between the first and the following occurrences of the
+# pattern is achieved by looking at the hold space.
+/^"POT-Creation-Date: .*"$/{
+x
+# Test if the hold space is empty.
+s/P/P/
+ta
+# Yes it was empty. First occurrence. Remove the line.
+g
+d
+bb
+:a
+# The hold space was nonempty. Following occurrences. Do nothing.
+x
+:b
+}
diff --git a/src/grep/po/ro.gmo b/src/grep/po/ro.gmo
new file mode 100644
index 0000000..1cc128d
--- /dev/null
+++ b/src/grep/po/ro.gmo
diff --git a/src/grep/po/ro.po b/src/grep/po/ro.po
new file mode 100644
index 0000000..b750228
--- /dev/null
+++ b/src/grep/po/ro.po
@@ -0,0 +1,940 @@
+# Mesajele în limba română pentru grep.
+# This file is distributed under the same license as the grep package.
+# Copyright (C) 2003 Free Software Foundation, Inc.
+# Eugen Hoanca <eugenh@urban-grafx.ro>, 2003.
+# Florentina Mușat <florentina.musat.28@gmail.com>, 2020.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.3.42\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2020-06-24 11:09+0300\n"
+"Last-Translator: Florentina Mușat <florentina.musat.28@gmail.com>\n"
+"Language-Team: Romanian <translation-team-ro@lists.sourceforge.net>\n"
+"Language: ro\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: Poedit 2.3.1\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "argument nevalid %s pentru %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "argument ambiguu %s pentru %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Argumentele valide sunt:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "eroare de program"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "supraplin de stivă"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "eroare de scriere"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ nebalansat"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "clasă de caractere nevalidă"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "sintaxa de clasă de caractere este [[:spațiu:]], nu [:spațiu]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "\\ escape neterminat"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "\\{\\} conținut nevalid"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "expresia regulată este prea mare"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( nebalansat"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "nu s-a specificat nicio sintaxă"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") nebalansat"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Eroare de sistem necunoscută"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: opțiunea „%s%s� este ambiguă\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: opțiunea „%s%s� este ambiguă; posibilități:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: opțiunea nerecunoscută „%s%s�\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: opțiunea „%s%s� nu permite un argument\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: opțiunea „%s%s� necesită un argument\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: opțiune nevalidă -- „%c�\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: opțiunea necesită un argument -- „%c�\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "memorie plină"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "nu s-a putut înregistra directorul de lucru curent"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "nu s-a putut întoarce la directorul de lucru inițial"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "nu s-a putut stabili modul de text/binar al descriptorului de fișier"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "`"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Succes"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Nu există potrivire"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Expresie regulată nevalidă"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Caracter de ordine alfabetică nevalid"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Nume de clasă de caracter nevalid"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Linie oblică inversă de urmărire"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Referință înapoi nevalidă"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "[, [^, [:, [., sau [= fără pereche"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( sau \\( fără pereche"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ fără pereche"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Conținut nevalid al \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Sfârșit de interval nevalid"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Memorie plină"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Expresie regulată precedentă nevalidă"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Sfârșit prematur al expresiei regulate"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Expresie regulată prea mare"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") sau \\) fără pereche"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Nu există o expresie regulată anterioară"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "ÃŽmpachetat de %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "ÃŽmpachetat de %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Licența GPLv3+: GNU GPL versiunea 3 sau mai mare <%s>.\n"
+"Acesta este software liber: sunteți liber să îl modificați și să îl "
+"redistribuiți.\n"
+"NU există NICIO GARANȚIE, în măsura permisă de lege.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Scris de %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Scris de %s și %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Scris de %s, %s și %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Scris de %s, %s, %s,\n"
+"și %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Scris de %s, %s, %s,\n"
+"%s, și %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Scris de %s, %s, %s,\n"
+"%s, %s, și %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Scris de %s, %s, %s,\n"
+"%s, %s, %s, și %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Scris de %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"și %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Scris de %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, și %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Scris de %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, și alții.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Raportați defecțiunile la: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Raportați defecțiunile %s la: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "%s pagină principală: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Ajutor general utilizând software GNU: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(intrare standard)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "parametru lungime context invalid"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "intrarea(input) este prea mare pentru numărare"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "FiÅŸierul binar %s corespunde\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "buclă recursivă de directoare"
+
+#: src/grep.c:1899
+#, fuzzy, c-format
+msgid "%s: input file is also the output"
+msgstr "fișierul de intrare %s este de asemenea și ieșirea"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Utilizare: %s [OPȚIUNE]... MODELE [FIȘIER]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Încercați „%s --help� pentru mai multe informații.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Caută pentru MODELE în fiecare FIȘIER.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Exemplu: %s -i 'hello world' menu.h main.c\n"
+"MODELELE pot conține modele multiple separate prin linii noi.\n"
+"\n"
+"Selectarea modelelor și interpretarea:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     MODELELE sunt expresii regulate extinse\n"
+"  -F, --fixed-strings       MODELELE sunt șiruri\n"
+"  -G, --basic-regexp        MODELELE sunt expresii regulate de bază\n"
+"  -P, --perl-regexp         MODELELE sunt expresii regulate PERL\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=MODELE     utilizează MODELELE pentru potrivire\n"
+"  -f, --file=FIȘIER           ia MODELELE de la FIȘIER\n"
+"  -i, --ignore-case         ignoră distincțiile de majuscule în modele și "
+"date\n"
+"      --no-ignore-case      nu ignora distincțiile de majuscule (implicit)\n"
+"  -w, --word-regexp         potrivește doar cuvinte întregi\n"
+"  -x, --line-regexp         potrivește doar linii întregi\n"
+"  -z, --null-data           o linie de date se termină în octetul 0, nu în "
+"linie nouă\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Diverse:\n"
+"  -s, --no-messages         suprimă mesajele de eroare\n"
+"  -v, --invert-match        selectează liniile care nu se potrivesc\n"
+"  -V, --version             afișează informațiile de versiune și ieși\n"
+"      --help                afișează acest text de ajutor și ieși\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Control de ieșire:\n"
+"  -m, --max-count=NUM       oprește după NUM linii selectate\n"
+"  -b, --byte-offset        tipărește decalajul de octet cu liniile de "
+"ieșire\n"
+"  -n, --line-number         tipărește numărul liniei cu liniile de ieșire\n"
+"      --line-buffered       golește ieșirea la fiecare linie\n"
+"  -H, --with-filename       tipărește numele fișierului cu liniile de "
+"ieșire\n"
+"  -h, --no-filename         suprimă prefixul numelui de fișier la ieșire\n"
+"      --label=ETICHETĂ         utilizează ETICHETĂ ca prefixul numelui de "
+"fișier de intrare standard\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       arată doar părțile pline ale liniilor care se "
+"potrivesc\n"
+"  -q, --quiet, --silent     suprimă toată ieșirea normală\n"
+"      --binary-files=TIP   presupune că fișierele binare sunt TIP;\n"
+"                            TIP este „binar�, „text� sau „fără-potrivire�\n"
+"  -a, --text                echivalent cu --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        echivalent cu --binary-files=fără-potrivire\n"
+"  -d, --directories=ACȚIUNE  cum să se manipuleze directoarele;\n"
+"                            ACȚIUNE este „citește�, „recursivitate�, sau "
+"„omite�\n"
+"  -D, --devices=ACȚIUNE      cum să se manipuleze dispozitive, FIFO-uri și "
+"socluri;\n"
+"                            ACȚIUNE este „citește� sau „omite�\n"
+"  -r, --recursive           like --directories=recursivitate\n"
+"  -R, --dereference-recursive  de asemenea, dar urmărește toate legăturile "
+"simbolice\n"
+
+#: src/grep.c:2023
+#, fuzzy, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB        caută doar fișiere care se potrivesc cu GLOB (un "
+"model de fișier)\n"
+"      --exclude=GLOB        omite fișierele și directoarele care se "
+"potrivesc cu GLOB\n"
+"      --exclude-from=FIȘIER   omite fișierele care se potrivesc oricărui "
+"model de la FIȘIER\n"
+"      --exclude-dir=GLOB    omite directoarele care se potrivesc cu GLOB\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  tipărește doar numele de FIȘIERE fără linii "
+"selectate\n"
+"  -l, --files-with-matches  tipărește doar numele de FIȘIERE cu linii "
+"selectate\n"
+"  -c, --count               tipărește doar un număr al liniilor selectate "
+"per FIȘIER\n"
+"  -T, --initial-tab         face ca tab-urile să fie aliniate (dacă este "
+"nevoie)\n"
+"  -Z, --null                tipărește octetul 0 după numele de FIȘIER\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Control de context:\n"
+"  -B, --before-context=NUM  tipărește NUM linii ale contextului de început\n"
+"  -A, --after-context=NUM   tipărește NUM linii ale contextului de urmărire\n"
+"  -C, --context=NUM         tipărește NUM linii al contextului de ieșire\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      la fel ca--context=NUM\n"
+"      --color[=CÂND],\n"
+"      --colour[=CÂND]       utilizează markere pentru a evidenția șirurile "
+"care se potrivesc;\n"
+"                            CÂND este „totdeauna�, „niciodată� sau „auto�\n"
+"  -U, --binary              nu elimina caracterele CR la EOL (MSDOS/"
+"Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Când FILE este „-�, citește intrarea standard.  Cu niciun FIȘIER, citește "
+"„.� dacă\n"
+"este recursiv,„-� altfel.  Cu mai puțin de două FIȘIERE, presupune -h.\n"
+"Starea de ieșire este 0 dacă orice linie (sau fișier dacă -L) este "
+"selectată, 1 altfel;\n"
+"dacă orice eroare se întâmplă -q nu este dat, starea de ieșire este 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "conflicte între căutătorii (matchers) specificaţi"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Potrivirea Perl nu este suportată într-o generare --disable-perl-regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "potrivire nevalidă %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "metodă dispozitive(devices) necunoscută"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "numărare maximă invalidă"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "tip fiÅŸiere-binare necunoscut"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Scris de Mike Haertel și alții; consultați\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "nu s-a putut aloca memorie pentru stiva PCRE JIT"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P suportă doar localizări unioctet și UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "opțiunea -P suportă doar un singur model"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "eroare internă (nu ar trebui să se întâmple vreodată)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "s-a depășit limita de lungime a liniei al PCRE"
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "memorie plină"
+
+#: src/pcresearch.c:310
+#, fuzzy, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "s-a epuizat stiva PCRE JIT"
+
+#: src/pcresearch.c:315
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "s-a depășit limita de backtracking al PCRE"
+
+#: src/pcresearch.c:319
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "s-a depășit limita de backtracking al PCRE"
+
+#: src/pcresearch.c:327
+#, fuzzy, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "eroare PCRE internă: %d"
+
+#, c-format
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "avertisment: GREP_OPTIONS este depășit; utilizați un alias sau un script"
+
+#, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "avertisment: %s: %s"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "numărare repetată neterminată"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "numărare repetată malformată"
+
+#~ msgid "out of memory"
+#~ msgstr "memorie plină"
+
+#~ msgid "writing output"
+#~ msgstr "scriere output"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Folosire: %s [OPÅ¢IUNE]... TIPAR [FIÅžIER]...\n"
+
+#~ msgid ""
+#~ "Search for PATTERN in each FILE or standard input.\n"
+#~ "Example: %s -i 'hello world' menu.h main.c\n"
+#~ "\n"
+#~ "Regexp selection and interpretation:\n"
+#~ msgstr ""
+#~ "Caută după TIPAR în fiecare FIşIER sau de la intrare standard.\n"
+#~ "Exemplu: %s -i 'hello world' menu.h main.c\n"
+#~ "\n"
+#~ "Selecţie şi interpretare regexp:\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE\n"
+#~ "                            TYPE is 'binary', 'text', or 'without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories\n"
+#~ "                            ACTION is 'read', 'recurse', or 'skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets\n"
+#~ "                            ACTION is 'read' or 'skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=PATTERN     files that match PATTERN will be examined\n"
+#~ "      --exclude=PATTERN     files that match PATTERN will be skipped.\n"
+#~ "      --exclude-from=FILE   files that match PATTERN in FILE will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match only print FILE names containing no match\n"
+#~ "  -l, --files-with-matches  only print FILE names containing matches\n"
+#~ "  -c, --count               only print a count of matching lines per "
+#~ "FILE\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Control ieÅŸire (output)l:\n"
+#~ "  -m, --max-count=NUM       oprire după NUM potriviri\n"
+#~ "  -b, --byte-offset         tipăreşte locaţia (byte offset) cu liniile "
+#~ "rezultate\n"
+#~ "  -n, --line-number         tipăreşte numărul liniei cu liniile "
+#~ "rezultate\n"
+#~ "      --line-buffered       înnoieşte (flush) outputul la fiecare linie\n"
+#~ "  -H, --with-filename       tipăreşte numele de fişier care corespund\n"
+#~ "  -h, --no-filename         suprimă prefixarea cu nume de fişier la "
+#~ "output\n"
+#~ "      --label=ETICHETĂ      tipăreşte ETICHETĂ ca nume fişier pentru "
+#~ "intrare standard\n"
+#~ "  -o, --only-matching       afişează doar o parte a unei linii "
+#~ "corespunzătoare TIPARului\n"
+#~ "  -q, --quiet, --silent     suprimă tot outputul\n"
+#~ "      --binary-files=TiP    presupune ca fiÅŸierele binare sunt TIP\n"
+#~ "                            unde TIP este 'binary', 'text', sau 'without-"
+#~ "match'\n"
+#~ "  -a, --text                echivalent cu --binary-files=text\n"
+#~ "  -I                        echivalent cu --binary-files=without-match\n"
+#~ "  -d, --directories=ACÅ¢IUNE mod de manipulare al directoarelor\n"
+#~ "                            ACÅ¢IUNE este 'read', 'recurse', sau 'skip'\n"
+#~ "  -D, --devices=ACÅ¢IUNE     mod de manipulare device-uri, FIFOuri ÅŸi "
+#~ "sockeţi\n"
+#~ "                            ACÅ¢IUNE este 'read' sau 'skip'\n"
+#~ "  -R, -r, --recursive       echivalent cu --directories=recurse\n"
+#~ "      --include=TIPAR       fiÅŸierele potrivite TIPARului vor fi "
+#~ "examinate\n"
+#~ "      --exclude=TIPAR       fiÅŸierele potrivite TIPARului vor fi omise.\n"
+#~ "      --exclude-from=FIŞIER fişierele potrivite TIPARului în FIŞIER vor "
+#~ "fi omise.\n"
+#~ "  -L, --files-without-match afişează doar nume FIŞIERe care nu corespund\n"
+#~ "  -l, --files-with-matches  afişează doar nume FIŞIERe care corespund\n"
+#~ "  -c, --count               afişează doar numărul de potriviri per "
+#~ "FIÅžIER\n"
+#~ "  -Z, --null                tipăreşte octet 0 după nume FIŞIER\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Context control:\n"
+#~ "  -B, --before-context=NUM  print NUM lines of leading context\n"
+#~ "  -A, --after-context=NUM   print NUM lines of trailing context\n"
+#~ "  -C, --context=NUM         print NUM lines of output context\n"
+#~ "  -NUM                      same as --context=NUM\n"
+#~ "      --color[=WHEN],\n"
+#~ "      --colour[=WHEN]       use markers to distinguish the matching "
+#~ "string\n"
+#~ "                            WHEN may be `always', `never' or `auto'.\n"
+#~ "  -U, --binary              do not strip CR characters at EOL (MSDOS)\n"
+#~ "  -u, --unix-byte-offsets   report offsets as if CRs were not there "
+#~ "(MSDOS)\n"
+#~ "\n"
+#~ "`egrep' means `grep -E'.  `fgrep' means `grep -F'.\n"
+#~ "With no FILE, or when FILE is -, read standard input.  If less than\n"
+#~ "two FILEs given, assume -h.  Exit status is 0 if match, 1 if no match,\n"
+#~ "and 2 if trouble.\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Control de context:\n"
+#~ "  -B, --before-context=NUM  tipăreşte NUM linii dinainte de context\n"
+#~ "  -A, --after-context=NUM   tipăreşte NUM linii de după context\n"
+#~ "  -C, --context=NUM         tipăreşte NUM linii de context\n"
+#~ "  -NUM                      la fel ca ÅŸi --context=NUM\n"
+#~ "      --color[=CÂND],\n"
+#~ "      --colour[=CÂND]       foloseşte marcaje pentru a deosebi şirurile "
+#~ "potrivite\n"
+#~ "                            CÂND poate fi `always', `never' sau `auto'.\n"
+#~ "  -U, --binary              nu renunţa la caractere CR la EOL (MSDOS)\n"
+#~ "  -u, --unix-byte-offsets   declară offset ca şi cum CR n-ar fi "
+#~ "acolo(MSDOS)\n"
+#~ "\n"
+#~ "`egrep' înseamnă `grep -E'.  `fgrep' înseamnă `grep -F'.\n"
+#~ "Fără FIŞIER, sau când FIŞIER este -, se citeşte intrarea standard. Dacă "
+#~ "se dau\n"
+#~ "mai puţin de 2 FIŞIERe, se presupune -h. Starea de ieşire e 0 pentru\n"
+#~ "corespunzător, 1 pentru necorespunzător, şi 2 pentru probleme.\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Report bugs to <bug-gnu-utils@gnu.org>.\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Raportaţi buguri la <bug-gnu-utils@gnu.org>.\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "metodă directoare necunoscută"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+#~ msgstr ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions. There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Acesta este software liber; vedeţi sursele pentru condiţii de copiere. "
+#~ "NU\n"
+#~ "există nici o garanţie; nici măcar pentru VANDABILITATE sau POTRIVIRE\n"
+#~ "PENTRU UN SCOP ANUME.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Opţiunile -P şi -z nu pot fi combinate"
+
+#~ msgid "%s: option `--%s' doesn't allow an argument\n"
+#~ msgstr "%s: opţiunea `--%s' nu permite un parametru\n"
+
+#~ msgid "%s: unrecognized option `--%s'\n"
+#~ msgstr "%s: opţiune necunoscută `--%s'\n"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: opţiune ilegală -- %c\n"
+
+#~ msgid "%s: option `-W %s' is ambiguous\n"
+#~ msgstr "%s: opţiunea `-W %s' este ambiguă\n"
+
+#~ msgid "%s: option `-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: opţiunea `-W %s' nu permite un parametru\n"
diff --git a/src/grep/po/ru.gmo b/src/grep/po/ru.gmo
new file mode 100644
index 0000000..dcd99a4
--- /dev/null
+++ b/src/grep/po/ru.gmo
diff --git a/src/grep/po/ru.po b/src/grep/po/ru.po
new file mode 100644
index 0000000..e3933ef
--- /dev/null
+++ b/src/grep/po/ru.po
@@ -0,0 +1,876 @@
+# translation of grep-2.6.ru.po to Russian
+# Локализаци� дл� grep.
+# Copyright (C) 1997, 1998, 1999, 2000, 2009, 2010 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+#
+# Denis Perchine <dyp@perchine.com>, 1998-2000.
+# Yuri Kozlov <yuray@komyakino.ru>, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-10 06:59+0300\n"
+"Last-Translator: Yuri Kozlov <yuray@komyakino.ru>\n"
+"Language-Team: Russian <gnu@d07.ru>\n"
+"Language: ru\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: Lokalize 20.12.0\n"
+"Plural-Forms:  nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n"
+"%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "неверный аргумент %s дл� %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "дву�мы�ленный аргумент %s дл� %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Допу�тимые аргументы:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "ошибка программы"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "переполнение �тека"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "ошибка запи�и"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "не�балан�ированна� ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "неправильный кла�� �имволов"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "�интак�и� кла��а �имволов: [[:space:]], а не [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "незавершённа� \\ �кранирующа� по�ледовательно�ть"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "неправильное �одержимое в \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "регул�рное выражение �лишком большое"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "не�балан�ированна� ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "не указан �интак�и�"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "не�балан�ированна� )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "�еизве�тна� �и�темна� ошибка"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: дву�мы�ленный параметр «%s%s»\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: дву�мы�ленный параметр «%s%s»; возможные варианты:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: нера�познанный параметр «%s%s»\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: дл� параметра «%s%s» нельз� и�пользовать аргумент\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: дл� параметра «%s%s» требует�� аргумент\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: неверный параметр «%c»\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: параметру требует�� аргумент «%c»\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "пам�ть и�черпана"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "не удало�ь запомнить текущий рабочий каталог"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "не удало�ь вернуть�� в начальный рабочий каталог"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "не удало�ь изменить тек�товый/двоичный режим у файлового де�криптора"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "«"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "»"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Выполнено у�пешно"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "�ет �овпадений"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "�еправильное регул�рное выражение"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "�еправильный �имвол �равнени�"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "�еправильное им� кла��а �имволов"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Завершающий �имвол обратной ко�ой черты"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "�еправильна� обратна� ��ылка"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "�епарна� [, [^, [:, [. или [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "�епарна� ( или \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "�епарна� \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "�еправильное �одержимое в \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "�еправильный конец диапазона"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Пам�ть и�черпана"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "�еправильное предше�твующее регул�рное выражение"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Преждевременное завершение регул�рного выражени�"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Регул�рное выражение �лишком большое"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "�епарна� ) или \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "�ет предыдущего регул�рного выражени�"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Упакован %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Упакован %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Лицензи� GPLv3+: GNU GPL вер�ии 3 или новее <%s>.\n"
+"Это �вободное ПО: вы можете измен�ть и ра�про�тран�ть его.\n"
+"�ет �ИК�КИХ Г�Р��ТИЙ в пределах дей�твующего законодатель�тва.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "�втор программы — %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "�вторы программы — %s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "�вторы программы — %s, %s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"�вторы программы — %s, %s, %s\n"
+"и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"�вторы программы — %s, %s, %s,\n"
+"%s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"�вторы программы — %s, %s, %s,\n"
+"%s, %s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"�вторы программы — %s, %s, %s,\n"
+"%s, %s, %s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"�вторы программы — %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"�вторы программы — %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"�вторы программы — %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s и другие.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Об ошибках �ообщайте по адре�у: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Об ошибках в %s �ообщайте по адре�у %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Домашн�� �траница %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Справка по работе � программами GNU: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(�тандартный ввод)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "неверный аргумент длины контек�та"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "входные данные �лишком велики, чтобы �о�читать"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: двоичный файл �овпадает"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: предупреждение: каталоги зациклены"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: файл ввода также и�пользует�� и дл� вывода"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "И�пользование: %s [П�Р�МЕТР]… Ш�БЛО�Ы [Ф�ЙЛ]…\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Запу�тите «%s --help» дл� получени� более подробного опи�ани�.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Пои�к Ш�БЛО�ОВ в каждом Ф�ЙЛЕ.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Пример: %s -i 'hello world' menu.h main.c\n"
+"Ш�БЛО�ОВ можно указать не�колько, раздел�� их �имволом новой �троки.\n"
+"\n"
+"Шаблон выбора и его интерпретаци�:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp  Ш�БЛО�Ы — ра�ширенные регул�рные выражени�\n"
+"  -F, --fixed-regexp     Ш�БЛО�Ы — �троки\n"
+"  -G, --basic-regexp     Ш�БЛО�Ы — про�тые регул�рные выражени�\n"
+"  -P, --perl-regexp      Ш�БЛО�Ы — регул�рные выражени� �зыка Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=Ш�БЛО�Ы   и�пользовать Ш�БЛО�Ы дл� пои�ка\n"
+"  -f, --file=Ф�ЙЛ        брать Ш�БЛО�Ы из Ф�ЙЛа\n"
+"  -i, --ignore-case      игнорировать различие реги�тра\n"
+"      --no-ignore-case   учитывать реги�тр (по умолчанию)\n"
+"  -w, --word-regexp      �овпадение об�зательно � целым �ловом\n"
+"  -x, --line-regexp      �овпадение об�зательно � целой �трокой\n"
+"  -z, --null-data        �троки раздел�ют�� байтом � нулевым значением, а "
+"не\n"
+"                         �имволом конца �троки\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Разное:\n"
+"  -s, --no-messages         не показывать �ообщени� об ошибках\n"
+"  -v, --invert-match        выбирать не подход�щие �троки\n"
+"  -V, --version             показать информацию о вер�ии и закончить работу\n"
+"      --help                показать �ту �правку и закончить работу\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Управление выводом:\n"
+"  -m, --max-count=ЧИСЛО     о�тановить�� по�ле указанного\n"
+"                            ЧИСЛ� �овпавших �трок\n"
+"  -b, --byte-offset         печатать вме�те � выходными �троками �мещение в\n"
+"                            байтах\n"
+"  -n, --line-number         печатать номер �троки вме�те � выходными "
+"�троками\n"
+"      --line-buffered       �бра�ывать буфер по�ле каждой �троки\n"
+"  -H, --with-filename       печатать им� файла дл� каждой выводимой �троки\n"
+"  -h, --no-filename         не начинать вывод � имени файла\n"
+"      --label=МЕТК�         и�пользовать МЕТКУ в каче�тве имени файла дл�\n"
+"                            �тандартного ввода\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       показывать только �овпавшие непу�тые ча�ти "
+"�трок\n"
+"  -q, --quiet, --silent     подавл�ть ве�ь обычный вывод\n"
+"      --binary-files=ТИП    �читать, что двоичный файл имеет ТИП:\n"
+"                            «binary», «text» или «without-match».\n"
+"  -a, --text                тоже, что и --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        то же, что и --binary-files=without-match\n"
+"  -d, --directories=ДЕЙСТВ  как обрабатывать каталоги\n"
+"                            ДЕЙСТВИЕ может быть «read» (читать),\n"
+"                            «recurse» (рекур�ивно) или «skip» (пропу�кать).\n"
+"  -D, --devices=ДЕЙСТВ      как обрабатывать у�трой�тва, FIFO и �океты\n"
+"                            ДЕЙСТВИЕ может быть «read» или «skip»\n"
+"  -r, --recursive           то же, что и --directories=recurse\n"
+"  -R, --dereference-recursive                             тоже, но � "
+"переходом\n"
+"                            по в�ем �имвольным ��ылкам\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=М�СК�       обработать только файлы, подпадающие под\n"
+"                            М�СКУ (файловый шаблон)\n"
+"      --exclude=М�СК�       пропу�тить файлы, подпадающие под М�СКУ\n"
+"      --exclude-from=Ф�ЙЛ   пропу�тить файлы, подпадающие под ма�ку\n"
+"                            файлов из Ф�ЙЛ�\n"
+"      --exclude-dir=М�СК�   пропу�тить каталоги, подпадающие под М�СКУ\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match печатать только имена Ф�ЙЛОВ без выбранных "
+"�трок\n"
+"  -l, --files-with-matches  печатать только имена Ф�ЙЛОВ � выбранными "
+"�троками\n"
+"  -c, --count               печатать только количе�тво выбранных\n"
+"                            �трок на Ф�ЙЛ\n"
+"  -T, --initial-tab         выравнивать табул�цией (е�ли нужно)\n"
+"  -Z, --null                печатать байт 0 по�ле имени Ф�ЙЛ�\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Управление контек�том:\n"
+"  -B, --before-context=ЧИС  печатать ЧИСЛО �трок предше�твующего контек�та\n"
+"  -A, --after-context=ЧИС   печатать ЧИСЛО �трок по�ледующего контек�та\n"
+"  -C, --context[=ЧИС]       печатать ЧИСЛО �трок контек�та\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -ЧИСЛО                    то же, что и --context=ЧИСЛО\n"
+"      --group-separator=SEP печатать SEP в �троке между �овпадени�ми\n"
+"                            � контек�том\n"
+"      --no-group-separator  не печатать разделитель между �овпадени�ми\n"
+"                            � контек�том\n"
+"      --color[=КОГД�],\n"
+"      --colour[=КОГД�]      и�пользовать маркеры дл� различи� �овпадающих\n"
+"                            �трок; КОГД� может быть «always» (в�егда),\n"
+"                            «never» (никогда) или «auto» (автоматиче�ки)\n"
+"  -U, --binary              не удал�ть �имволы CR в конце �троки\n"
+"                            (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Е�ли в каче�тве Ф�ЙЛ� указан �имвол «-», то читает�� �тандартный ввод.\n"
+"Е�ли Ф�ЙЛ не указан, то читает�� текущий каталог «.»  и «-» в противном\n"
+"�лучае. Е�ли указано менее двух Ф�ЙЛОВ, то предполагает�� -h.\n"
+"При нахождении �овпадений любой �троки кодом завершени� будет 0\n"
+"и 1, е�ли ничего не �овпало. При возникновении ошибок и е�ли не указан\n"
+"параметр -q, кодом завершени� будет 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "заданы конфликтующие образцы"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr "Шаблоны Perl не поддерживают�� при �борке � --disable-perl-regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "неверный образец %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "неизве�тный метод дл� у�трой�тв"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "предупреждение: параметр --unix-byte-offsets (-u) у�тарел"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "неверно задано чи�ло мак�имального количе�тва �овпадений"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "неизве�тный тип двоичных файлов"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"�вторы программы: Mike Haertel и другие; �мотрите\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "ошибка выделени� пам�ти дл� �тека PCRE JIT"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "параметр -P поддерживает только однобайтовые локали и UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "параметр -P поддерживает только одиночный шаблон"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "внутренн�� ошибка (не должна возникать)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "превышено ограничение длины �троки PCRE"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: пам�ть и�черпана"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: и�черпан �тек PCRE JIT"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: и�черпан лимит возвратов в PCRE"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: и�черпан лимит рекур�ии в PCRE"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: внутренн�� ошибка PCRE: %d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "предупреждение: GREP_OPTIONS у�тарел; и�пользуйте п�евдоним или �ценарий"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "предупреждение: %s: %s"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "Домашн�� �траница %s: <https://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "неверный аргумент %s%s в «%s»"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "недопу�тимый �уффик� в аргументе %s%s дл� «%s»"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "аргумент %s%s �лишком велик дл� «%s»"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Майк Гертель (Mike Haertel)"
+
+#~ msgid "internal error"
+#~ msgstr "внутренн�� ошибка"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: у параметра «--%s» не может быть аргумента\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: неизве�тный параметр «--%s»\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: дву�мы�ленный параметр «-W %s»\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: у параметра «-W %s» не может быть аргумента\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: дл� параметра «-W %s» требует�� аргумент\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "Вызов lseek завершил�� неудачно"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr ""
+#~ "По умолчанию, Ш�БЛО� пред�тавл�ет �обой про�тое регул�рное выражение "
+#~ "(BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "Вме�то «egrep» предполагает�� запу�к «grep -E». Вме�то «fgrep» "
+#~ "предполагает��\n"
+#~ "«grep -F». Запу�к под именами «egrep» или «fgrep» лучше не выполн�ть.\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "не�кранированный �имвол ^ или $ не поддерживает�� при указании -Pz"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Домашн�� �траница GNU Grep: <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "недопу�тима� по�ледовательно�ть байтов UTF-8 во входных данных"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "Ш�БЛО� пред�тавл�ет �обой ра�ширенное регул�рное выражение (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr ""
+#~ "Запу�к под именем «egrep» у�тарел; вме�то �того и�пользуйте «grep -E».\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr ""
+#~ "Ш�БЛО� пред�тавл�ет �троки фик�ированной длины, разделённые �имволом "
+#~ "новой �троки.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr ""
+#~ "Запу�к под именем «fgrep» у�тарел; вме�то �того и�пользуйте «grep -F».\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "В %s можно и�пользовать только шаблонный �интак�и� %s"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr ""
+#~ "начина� � 2010 года при указании параметра --mmap ничего не выполн�ет��"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "незавершённое количе�тво повторений"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "некорректно указано количе�тво повторений"
+
+#~ msgid "writing output"
+#~ msgstr "запи�ь выходных данных"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "в GREP_COLORS=\"%s\" дл� �вой�тва «%s» требует�� указать значение («=…»); "
+#~ "пропу�кает��"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "в GREP_COLORS=\"%s\" �вой�тво «%s» �вл�ет�� логиче�ким и не требует "
+#~ "значени� («=%s»); пропу�кает��"
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "в GREP_COLORS=\"%s\" значение «%s» при�воено �вой�тву %s"
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "прекращение обработки неправильной GREP_COLORS=\"%s\", начина� � "
+#~ "о�тавшей�� под�троки «%s»"
+
+#~ msgid "unknown directories method"
+#~ msgstr "неизве�тный метод дл� каталогов"
diff --git a/src/grep/po/sk.gmo b/src/grep/po/sk.gmo
new file mode 100644
index 0000000..0f5814c
--- /dev/null
+++ b/src/grep/po/sk.gmo
diff --git a/src/grep/po/sk.po b/src/grep/po/sk.po
new file mode 100644
index 0000000..70445ee
--- /dev/null
+++ b/src/grep/po/sk.po
@@ -0,0 +1,944 @@
+# Translation of grep to Slovak 
+# Copyright (C) 1997-99, 2000, 2001, 2002 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Ivan Masár <helix84@centrum.sk>, 2007, 2008, 2009, 2010, 2011, 2012.
+# Ladislav Michnovi� <ladislav.michnovic@gmail.com>, 2020, 2021.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-09 17:38+0200\n"
+"Last-Translator: Ladislav Michnovi� <ladislav.michnovic@gmail.com>\n"
+"Language-Team: Slovak <sk-i18n@lists.linux.sk>\n"
+"Language: sk\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: Poedit 2.4.1\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "neplatný argument %s pre %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "nejednozna�ný argument %s pre %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Platné argumentu sú:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "chyba programu"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "prete�enie zásobníka"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "chyba zápisu"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ bez náprotivku"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "neplatná trieda znakov"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "syntax triedy znakov je [[:space:]], nie [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "nedokon�ená úniková klauzula \\"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "neplatný obsah \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "regulárny výraz je príliš veľký"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( bez náprotivku"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "neuvedená syntax"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") bez náprotivku"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Neznáma systémová chyba"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: voľba „%s%s“ je nejednozna�ná\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: voľba „%s%s“ je nejednozna�ná; možnosti:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: nerozpoznaná voľba „%s%s“\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: voľba „%s%s“ nepripúšťa argument\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: voľba „%s%s“ vyžaduje argument\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: neplatná voľba -- %c\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: voľba vyžaduje argument -- %c\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "pamäť bola vy�erpaná"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "nepodarilo sa zaznamenať aktuálny adresár"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "zlyhalo navrátenie do pôvodného aktuálneho adresára"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "zlyhalo nastaviť deskriptor súboru do textového/binárneho módu"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "„"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "“"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Úspešne vykonané"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Ni� nezodpovedá"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Neplatný regulárny výraz"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Neplatný radiaci znak"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Neplatný názov triedy znakov"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Spätná lomka na konci"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Neplatný spätný odkaz"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "[, [^, [:, [., alebo [= bez náprotivku"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( alebo \\( bez náprotivku"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ bez náprotivku"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Neplatný obsah \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Neplatný koniec rozsahu"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Pamäť bola vy�erpaná"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Neplatný predošlý regulárny výraz"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Neplatný koniec regulárneho výrazu"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Regulárny výraz je príliš veľký"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") alebo \\) bez náprotivku."
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Žiadny predošlý regulárny výraz"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Balík vytvoril %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Balík vytvoril %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Licencia GPLv3+: GNU GPL verzie 3 alebo neskoršej <%s>\n"
+"Toto je slobodný softvér: môžete ho slobodne meniť a šíriť.\n"
+"Nie je poskytovaná ŽIADNA Z�RUKA do miery akú povoľuje aplikovateľné právo.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Napísal %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Napísali %s a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Napísali %s, %s a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Napísali %s, %s, %s a\n"
+"%s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Napísali %s, %s, %s,\n"
+"%s a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Napísali %s, %s, %s,\n"
+"%s, %s a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Napísali %s, %s, %s,\n"
+"%s, %s, %s a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Napísali %s, %s, %s,\n"
+"%s, %s, %s, %s a\n"
+"%s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Napísali %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s a %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Napísali %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s a iní.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Chyby oznamujte na: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Chyby programu %s oznamujte na: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Domovská stránka %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Všeobecná pomoc pri používaní softvéru GNU: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(štandardný vstup)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "neplatný argument dĺžky kontextu"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "vstup je príliš veľký, aby sa dal spo�ítať"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: zhoda v binárnom súbore"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: upozornenie: rekurzívna adresárová slu�ka"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "vstupný súbor %s je tiež uvedený ako výstupný"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Použitie: %s [VOĽBA]... VZORY [SÚBOR]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Ďalšie informácie získate príkazom „%s --help“.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Hľadať VZORY v každom SÚBORE.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Príklad: %s -i 'hello world' menu.h main.c\n"
+"VZORY môžu obsahovať niekoľko vzorov oddelených odriadkovaním.\n"
+"\n"
+"Výber a interpretácia vzoru:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     VZOR je rozšírený regular expression (ERE)\n"
+"  -F, --fixed-strings       VZOR je množina pevných reťazcov\n"
+"  -G, --basic-regexp        VZOR je základný regulárny výraz (BRE)\n"
+"  -P, --perl-regexp         VZOR je perlovský regulárny výraz\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=VZOR       použiť na hľadanie zhody VZOR\n"
+"  -f, --file=SÚBOR          získať VZOR zo SÚBORu\n"
+"  -i, --ignore-case         ignorovať rozdiely vo veľkosti písmen\n"
+"      --no-ignore-case      neignorovať rozdiely vo veľkosti písmen "
+"(predvolené)\n"
+"  -w, --word-regexp         vynútiť, aby VZOR zodpovedal len celým slovám\n"
+"  -x, --line-regexp         vynútiť, aby VZOR zodpovedal len celým riadkom\n"
+"  -z, --null-data           údaje kon�ia bajtom 0, nie novým riadkom\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Rozli�né:\n"
+"  -s, --no-messages         potla�iť chybové správy\n"
+"  -v, --invert-match        vybrať riadky, ktoré nemajú zhodu\n"
+"  -V, --version             vypísať informácie o verzii a skon�iť\n"
+"      --help                zobraziť tieto informácie a skon�iť\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Riadenie výstupu:\n"
+"  -m, --max-count=POČ       zastaviť po POČ zhodách\n"
+"  -b, --byte-offset         vypísať pri výstupných riadkoch ofset v bajtoch\n"
+"  -n, --line-number         vypísať pri výstupných riadkoch �íslo riadka\n"
+"      --line-buffered       vypisovať (flush) výstup po každom riadku\n"
+"  -H, --with-filename       vypísať názov súboru pri každej zhode\n"
+"  -h, --no-filename         potla�iť názov súboru ako predponu vo výstupe\n"
+"      --label=N�VESTIE      použiť N�VESTIE ako predponu názvu súboru pre "
+"Å¡tand. vstup\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       zobrazovať iba neprázdne �asti riadkov, ktoré "
+"zodpovedajú\n"
+"  -q, --quiet, --silent     potla�iť všetok bežný výstup\n"
+"      --binary-files=TYP    predpokladať, že typ binárnych súborov je TYP;\n"
+"                            TYP zvoľte „binary“, „text“ alebo „without-"
+"match“\n"
+"  -a, --text                ekvivalentné s --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        ekvivalentné s --binary-files=without-match\n"
+"  -d, --directories=OPER�CIA ako pracovať s adresármi; kde OPER�CIA je\n"
+"                            „read“ (�ítať), „recurse“ (prechádzať) alebo\n"
+"                            „skip“ (presko�iť)\n"
+"  -D, --devices=OPER�CIA    ako pracovať so zariadeniami, FIFO a socketmi;\n"
+"                            OPER�CIA je „read“ (�ítať) alebo "
+"„skip“ (presko�iť)\n"
+"  -r, --recursive           ekvivalentné s --directories=recurse\n"
+"  -R, --dereference-recursive  podobné, ale nasleduje symbolické odkazy\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=VZOR_SÚBORU   hľadať iba v súboroch zodpovedajúcich "
+"VZOR_SÚBORU\n"
+"      --exclude=VZOR_SÚBORU   presko�iť súbory a adresáre zodpovedajúce "
+"VZOR_SÚBORU\n"
+"      --exclude-from=SÚBOR    presko�iť súbory zodpovedajúce akémukoľvek "
+"vzoru súboru zo SÚBOR\n"
+"      --exclude-dir=VZOR      presko�iť adresáre, ktoré zodpovedajú VZORu\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  vypísať iba názvy SÚBORov neobsahujúce zhodu\n"
+"  -l, --files-with-matches  vypísať iba názvy SÚBORov obsahujúce zhodu\n"
+"  -c, --count               vypísať iba po�et riadkov obsahujúcich zhodu v "
+"SÚBORe\n"
+"  -T, --initial-tab         zarovnávať tabulátory (ak je to potrebné)\n"
+"  -Z, --null                vypísať za názvom SÚBORu bajt 0\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Riadenie kontextu:\n"
+"  -B, --before-context=POČ  vytla�iť POČ riadkov kontextu pred\n"
+"  -A, --after-context=POČ   vytla�iť POČ riadkov kontextu za\n"
+"  -C, --context=POČ         vytla�iť POČ riadkov kontextu výstupu\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                  rovnaké ako --context=NUM\n"
+"      --group-separator=SEP  vypíš oddeľova� SEP na riadok medzi zhodami s "
+"kontextom\n"
+"      --no-group-separator  nevypisuj oddeľova� pre zhody s kontextom\n"
+"      --color[=KEDY],\n"
+"      --colour[=KEDY]    použiť zvýrazňovanie zodpovedajúcich reťazcov;\n"
+"                        KEDY zvoľte „always“, „never“ alebo „auto“\n"
+"  -U, --binary      neodstraňovať znak CR na konci riadka (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Ak SÚBOR je -, �íta sa zo štandardného vstupu. Bez SÚBORU �íta sa . ak \n"
+"je rekurzia, v opa�nom prípade -. Ak sú zadané menej ako dva SÚBORY "
+"predpokladá sa -h.\n"
+"Výstupný chybový kód je 0 ak bol vybraný nejaký riadok,inak je 1;\n"
+"ak sa vyskytne nejaká chyba a nebolo zadané -q, výstupný chybový kód je 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "boli zadané konfliktné špecifikátory"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Podpora Perlu nebola zakompilovaná do tejto binárky s --disable-perl-regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "neplatný zástupný znak %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "neznáme metódy zariadení"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "Upozornenie: --unix-byte-offsets (-u) sa už nepoužíva"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "neplatný maximálny po�et"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "neznámy typ binárneho súboru"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Napísal Mike Haertel iní; pozri\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "chyba pri alokácii pamäte pre zásobník PCRE JIT"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P podporuje iba unibyte a UTF-8 locales"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "voľba -P podporuje iba jediný vzor"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "vnutorná chyba (nemalo by nikdy nastať)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "prekro�ený limit dĺžky riadka PCRE"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: pamäť bola vy�erpaná"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: vy�erpaný zásobník PCRE JIT"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: prekro�ený limit backtrackingu PCRE"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: prekro�ený limit rekurzie PCRE"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: vnútorná chyba PCRE: %d"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: voľba „--%s“ nepripúšťa argument\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: nerozpoznaná voľba „--%s“\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: voľba „-W %s“ nepripúšťa argument\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: voľba „-W %s“ vyžaduje argument\n"
+
+#~ msgid "%s home page: <http://www.gnu.org/software/%s/>\n"
+#~ msgstr "Domovská stránka %s: <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "neplatný argument %s%s „%s“"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "neplatná prípona v argumente %s%s „%s“"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "argument %s%s „%s“ je príliš veľký"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "VZORKA je rozšírený regulárny výraz (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr ""
+#~ "Vyvolanie príkazu ako „egrep“ sa neodporú�a; použite namiesto toho „grep -"
+#~ "E“.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr ""
+#~ "VZORKA je množina pevných reťazcov oddelených znakom nového riadka.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr ""
+#~ "Vyvolanie príkazu ako „fgrep“ sa neodporú�a; použite namiesto toho „grep -"
+#~ "F“.\n"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "VZORKA je štandardne základný regulárny výraz (BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "„egrep“ znamená „grep -E“. „fgrep“ znamená „grep -F“.\n"
+#~ "Priame vyvolanie príkazu ako „egrep“ �i „fgrep“ sa neodporú�a.\n"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "lseek failed"
+#~ msgstr "nepodarilo sa vykonať lseek()"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "upozornenie: %s: %s"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Domovská stránka GNU Grep: <%s>\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s môže používať iba syntax vzorky %s"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "voľba --mmap ni� nerobí od roku 2010"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "Nedokon�ený po�et opakovaní"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "Zle formulovaný po�et opakovaní"
+
+#~ msgid "writing output"
+#~ msgstr "zapisuje sa výstup"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "V GREP_COLORS=\"%s\", potrebuje kapacita \"%s\" hodnotu (\"=...\"); "
+#~ "presko�ené"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "V GREP_COLORS=\"%s\", je kapacita \"%s\" booleovského typu a nemôže "
+#~ "nadobúdať hodnotu (\"=%s\"); presko�ené"
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "V GREP_COLORS=\"%s\", kapacita \"%s\" %s."
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "zastavené spracovanie zle utvoreného GREP_COLORS=\"%s\" na zvyšnom "
+#~ "podreťazci \"%s\"."
+
+#~ msgid "unknown directories method"
+#~ msgstr "neznáme metódy adresárov"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE;\n"
+#~ "                            TYPE is `binary', `text', or `without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories;\n"
+#~ "                            ACTION is `read', `recurse', or `skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+#~ "                            ACTION is `read' or `skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=FILE_PATTERN  search only files that match FILE_PATTERN\n"
+#~ "      --exclude=FILE_PATTERN  skip files and directories matching "
+#~ "FILE_PATTERN\n"
+#~ "      --exclude-from=FILE   skip files matching any file pattern from "
+#~ "FILE\n"
+#~ "      --exclude-dir=PATTERN directories that match PATTERN will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match print only names of FILEs containing no "
+#~ "match\n"
+#~ "  -l, --files-with-matches  print only names of FILEs containing matches\n"
+#~ "  -c, --count               print only a count of matching lines per "
+#~ "FILE\n"
+#~ "  -T, --initial-tab         make tabs line up (if needed)\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Riadenie výstupu:\n"
+#~ "  -m, --max-count=POČET     zastaviť po POČET zhodách\n"
+#~ "  -b, --byte-offset         vypísať ofset v bajtoch pri riadkoch výstupu\n"
+#~ "  -n, --line-number         vypísať �íslo riadka pri riadkoch výstupu\n"
+#~ "      --line-buffered       flush výstupu po každom riadku\n"
+#~ "  -H, --with-filename       vypísať názov súboru pri každej zhode\n"
+#~ "  -h, --no-filename         potla�iť prefix názvu súboru na výstupe\n"
+#~ "      --label=ŠT�TOK        vypísať ŠT�TOK ako názov súboru pre štandard. "
+#~ "vstup\n"
+#~ "  -o, --only-matching       zobraziť iba �asť riadka zodpovedajúcu "
+#~ "VZORKE\n"
+#~ "  -q, --quiet, --silent     potla�iť všetok normálny výstup\n"
+#~ "      --binary-files=TYP    predpokladať, že binárne súbory sú zadaného "
+#~ "TYPu;\n"
+#~ "                            TYP je „binary“, „text“ alebo „without-"
+#~ "match“\n"
+#~ "  -a, --text                ekvivalentné s --binary-files=text\n"
+#~ "  -I                        ekvivalentné s --binary-files=without-match\n"
+#~ "  -d, --directories=AKCIA   ako zaobchádzať s adresármi;\n"
+#~ "                            AKCIA je „read“, „recurse“ alebo „skip“\n"
+#~ "  -D, --devices=AKCIA       ako zaobchádzať so zariadeniami, FIFO a "
+#~ "socketmi;\n"
+#~ "                            AKCIA je „read“ alebo „skip“\n"
+#~ "  -R, -r, --recursive       ekvivalentné s --directories=recurse\n"
+#~ "      --include=SÚBOR_VZORKA  hľadať iba v súboroch zodpoved. "
+#~ "SÚBOR_VZORKA\n"
+#~ "      --exclude=SÚBOR_VZORKA  presko�iť súbory a adresáre zodp. "
+#~ "SÚBOR_VZORKA\n"
+#~ "      --exclude-from=SÚBOR  presko�iť súbory zodp. akejkoľvek vzorke zo "
+#~ "SÚBORU\n"
+#~ "      --exclude-dir=VZORKA  presko�iť adresáre zodpovedajúce VZORKE.\n"
+#~ "  -L, --files-without-match vypísať iba názvy SÚBOROV, ktoré neobsahujú "
+#~ "zhodu\n"
+#~ "  -l, --files-with-matches  vypísať iba názvy SÚBOROV, ktoré obsahujú "
+#~ "zhodu\n"
+#~ "  -c, --count               vypísať iba po�et zodpovedajúcich riadkov na "
+#~ "SÚBOR\n"
+#~ "  -T, --initial-tab         zarovnať tabulátory (ak je potrebné)\n"
+#~ "  -Z, --null                vytla�iť bajt 0 po SÚBORE\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Voľby -P a -z nie je možné kombinovať"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: neprípustná voľba -- %c\n"
+
+#~ msgid "Copyright (C) 2008 Free Software Foundation, Inc.\n"
+#~ msgstr "Copyright (C) 2008 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions.  There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Tento program je slobodný softvér; podmienky šírenia si pozrite v "
+#~ "zdrojových\n"
+#~ "súboroch. Nie je poskytovaná ŽIADNA záruka; ani záruka PREDAJNOSTI �i\n"
+#~ "VHODNOSTI NA DAN� ÚČEL.\n"
diff --git a/src/grep/po/sl.gmo b/src/grep/po/sl.gmo
new file mode 100644
index 0000000..91323ce
--- /dev/null
+++ b/src/grep/po/sl.gmo
diff --git a/src/grep/po/sl.po b/src/grep/po/sl.po
new file mode 100644
index 0000000..abd9423
--- /dev/null
+++ b/src/grep/po/sl.po
@@ -0,0 +1,1014 @@
+# -*- mode: po; coding: utf-8; -*- Slovenian message catalogue for grep
+# Copyright (C) 1996, 1999, 2000, 2007, 2008, 2009, 2011, 2012, 2013, 2014, 2015, 2017 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Primož Peterlin <primozz.peterlin@gmail.com>, 1996, 1999, 2000, 2007, 2008, 2009, 2011, 2012, 2013, 2014, 2015, 2018.
+#
+# $Id: grep-3.0.23-b00.sl.po,v 1.2 2018/07/28 21:40:33 peterlin Exp $
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU grep 3.0.23-b00\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2018-07-28 23:40+0200\n"
+"Last-Translator: Primož Peterlin <primozz.peterlin@gmail.com>\n"
+"Language-Team: Slovenian <translation-team-sl@lists.sourceforge.net>\n"
+"Language: sl\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8-bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=4; plural=(n%100==1 ? 1 : n%100==2 ? 2 : n%100==3 || n"
+"%100==4 ? 3 : 0);\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "neveljavni argument %s za %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "dvoumni argument %s za %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Veljavni argumenti so:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "napaka pri pisanju"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "uklepaj [ brez zaklepaja"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "neveljavno ime razreda znakov"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "skladnja imena razreda znakov je [[:space:]], ne [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "nedokon�ano ubežno zaporedje \\"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "neveljavna vsebina \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "regularni izraz je preobsežen"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "uklepaj ( brez zaklepaja"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "skladnja ni podana"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "zaklepaj ) brez uklepaja"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Neznana sistemska napaka"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: izbira »%s%s« ni enopomenska\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: izbira »%s%s« ni enopomenska; možnosti:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: neprepoznana izbira »%s%s«\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: izbira »%s%s« ne dovoljuje argumenta\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: izbira »%s%s« zahteva argument\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: neveljavna izbira -- »%c«\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: izbira zahteva argument -- »%c«\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "pomnilnik porabljen"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "trenutnega delovnega imenika ni mogo�e zabeležiti"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "vrnitev v za�etni delovni imenik ni mogo�a"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "nastavitev deskriptorja datoteke za tekstovni/binarni na�in ni uspela"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "»"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "«"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Uspešno"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Brez zadetkov"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Neveljaven regularen izraz"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Neveljaven razvrš�evalni znak"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Neveljavno ime razreda znakov"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Zaklju�na obratna poševnica"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Neveljaven povratni sklic"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Uklepaj [, [^, [:, [. ali [= brez para"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Uklepaj ( ali \\( brez para"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Uklepaj \\{ brez para"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Neveljavna vsebina \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Neveljaven konec razpona"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Pomnilnik porabljen"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Neveljaven predhodni regularni izraz"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Pred�asen zaklju�ek regularnega izraza"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Regularni izraz je preobsežen"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Zaklepaj ) ali \\\\) brez para"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Manjkajo� prejšnji regularni izraz"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Priprava paketa: %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Priprava paketa: %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, fuzzy, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"\n"
+"GPLv3+: GNU GPL, 3. izdaja ali poznejša <http://www.gnu.org/licenses/gpl."
+"html>\n"
+"To je prosto programje; lahko ga redistribuirate in/ali spreminjate.\n"
+"Za izdelek ni NOBENEGA JAMSTVA, do z zakonom dovoljene meje.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Avtor(ica): %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Avtorja: %s in %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Avtorji: %s, %s in %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Avtorji: %s, %s, %s\n"
+"in %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Avtorji: %s, %s, %s,\n"
+"%s in %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Avtorji: %s, %s, %s,\n"
+"%s, %s in %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Avtorji: %s, %s, %s,\n"
+"%s, %s, %s in %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Avtorji: %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"in %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Avtorji: %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s in %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Avtorji: %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s in drugi.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"Poro�ila o napakah: %s\n"
+"Napake v prevodu sporo�ite na <translation-team-sl@lists.sourceforge.net>.\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+"Napake v programu %s sporo�ite na %s.\n"
+"Napake v prevodu sporo�ite na <translation-team-sl@lists.sourceforge.net>.\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Spletna stran %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, fuzzy, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Splošna pomo� za rabo programja GNU: <http://www.gnu.org/gethelp/>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standardni vhod)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "velikost konteksta ni veljavna"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "vhod je prevelik, da bi ga mogli prešteti"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "Binarna datoteka %s ustreza\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "rekurzivna zanka imenikov"
+
+#: src/grep.c:1899
+#, fuzzy, c-format
+msgid "%s: input file is also the output"
+msgstr "vhodna datoteka %s je tudi izhodna"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Uporaba: %s [IZBIRA]... VZOREC [DATOTEKA]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Poskusite  »%s --help« za dodatna pojasnila.\n"
+
+#: src/grep.c:1969
+#, fuzzy, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "V vsaki DATOTEKI se iš�e VZOREC.\n"
+
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Zgled: %s -i 'hello world' menu.h main.c\n"
+"\n"
+"Izbira in tolma�enje vzorcev:\n"
+
+#: src/grep.c:1975
+#, fuzzy, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     VZOREC je razširjeni regularni izraz\n"
+"  -F, --fixed-strings       VZOREC je množica nizov, vsak v svoji vrstici\n"
+"  -G, --basic-regexp        VZOREC je osnovni regularni izraz (privzeto)\n"
+"  -P, --perl-regexp         VZOREC je regularni izraz z razširitvami perla\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=VZOREC       uporabi VZOREC kot regularni izraz\n"
+"  -f, --file=DATOTEKA       preberi VZOREC iz podane DATOTEKE\n"
+"  -i, --ignore-case         velike in male �rke obravnavaj enako\n"
+"  -w, --word-regexp         iskanje uspešno le, �e je VZOREC cela beseda\n"
+"  -x, --line-regexp         iskanje uspešno le, �e je VZOREC cela vrstica\n"
+"  -z, --null-data           vrstica podatkov je kon�ana z znakom NUL, ne z\n"
+"                            znakom za skok v novo vrstico\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Razno:\n"
+"  -s, --no-messages         brez sporo�il o napakah\n"
+"  -v, --invert-match        izberi vrstice, ki se ne ujemajo\n"
+"  -V, --version             verzija programa\n"
+"      --help                ta pomo�\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Nadzor izhoda:\n"
+"  -m, --max-count=Å TEVILO   odnehaj po danem Å TEVILU izbranih vrstic\n"
+"  -b, --byte-offset         z izpisom odmika (v zlogih)\n"
+"  -n, --line-number         z izpisom zaporedne Å¡tevilke vrstice\n"
+"      --line-buffered       izhodni medpomnilnik izpraznimo vsako vrstico\n"
+"  -H, --with-filename       z izpisom imena datoteke\n"
+"  -h, --no-filename         brez izpisa imena datoteke\n"
+"      --label=OZNAKA        z navedeno OZNAKO, kadar beremo s standardnega "
+"vhoda\n"
+
+#: src/grep.c:2007
+#, fuzzy, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       izpis samo dela vrstice z VZORCEM\n"
+"  -q, --quiet, --silent     brez vsega obi�ajnega izpisa\n"
+"      --binary-type=TIP     privzemi izbrani TIP binarne datoteke\n"
+"                            TIP je lahko »binary«, »text« ali »without-"
+"match«\n"
+"  -a, --text                isto kot --binary-type=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        isto kot --binary-type=without-match\n"
+"  -d, --directories=DEJANJE  kako obravnavamo imenike\n"
+"                            DEJANJE je lahko »read«, »recurse« ali »skip«\n"
+"  -D, --devices=DEJANJE     kako obravnavamo datoteke naprav\n"
+"                            DEJANJE je lahko »read« ali »skip«\n"
+"  -r, --recursive           podobno kot --directories=recurse\n"
+"  -R, --dereference-recursive  podobno, vendar s sledenjem vseh simbolnih \n"
+"                               povezav\n"
+
+#: src/grep.c:2023
+#, fuzzy, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=VZOREC      preiš�i le datoteke, ki ustrezajo VZORCU\n"
+"      --exclude=VZOREC      izpusti datoteke, ki ustrezajo VZORCU\n"
+"      --exclude-from=DATOTEKA  izpusti datoteke, ki ustrezajo vzorcu v "
+"DATOTEKI\n"
+"      --exclude-dir=VZOREC  izpusti imenike, ki ustrezajo VZORCU\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match le imena DATOTEK brez izbranih vrstic\n"
+"  -l, --files-with-matches  le imena DATOTEK z izbranimi vrsticami\n"
+"  -c, --count               le skupno Å¡tevilo izbranih vrstic v DATOTEKI\n"
+"  -T, --initial-tab         dodaj za�etni tabulator (�e je potrebno)\n"
+"  -Z, --null                izpiši znak NUL za imenom DATOTEKE\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Nadzor nad kontekstom:\n"
+"  -B, --before-context=Å T   Å T vrstic konteksta pred vrstico z VZORCEM\n"
+"  -A, --after-context=Å T    Å T vrstic konteksta za vrstico z VZORCEM\n"
+"  -C, --context=Å T          Å T vrstic konteksta pred in za vrstico z "
+"VZORCEM\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -Å T                       isto kot --context=Å T\n"
+"      --color[=KDAJ],\n"
+"      --colour[=KDAJ]       ujemajo�e nize barvno ozna�imo; KDAJ je lahko\n"
+"                            »always«, »never« ali »auto«\n"
+"  -U, --binary              ne porežemo znakov CR na koncu vrstic \n"
+"                            (MS-DOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Če je podana DATOTEKA enaka »-«, se bere s standardnega vhoda. Če\n"
+"DATOTEKA ni podana, se bere ».«, kadar je podana izbira »--recursive«,\n"
+"sicer »-«. Če sta podani manj kot dve DATOTEKI, se privzame izbira »-h«.\n"
+"Izhodna koda je 0 ob vsaj eni izbrani vrstici, sicer pa 1; �e je\n"
+"prišlo do napake in ni bila podana izbira -q, program vrne kodo 2.\n"
+
+#  Sporo�ilo se pojavi pri nedokumentirani izbiri -X
+#  grep.c:622 ->
+#  opt = getopt(argc, argv, "0123456789A:B:CEFGVX:bce:f:hiLlnqsvwxy"
+#  grep --help ->
+#  usage: grep [-[[AB] ]<num>] [-[CEFGVchilnqsvwx]] [-[ef]] <expr> [<files...>]
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "podana navodila si nasprotujejo"
+
+#: src/grep.c:2101
+#, fuzzy
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"podpora za izbiro -P ni bila vklju�ena v ta prevedeni program (--disable-"
+"perl-regexp)"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "neveljaven ujemalnik %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "neznana metoda datotek naprav"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "neveljavno najve�je število"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "neznan tip binarne datoteke"
+
+#: src/grep.c:2829
+#, fuzzy
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr "drugi, glejte <http://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "pomnilnika za sklad PCRE JIT se ni uspelo dodeliti"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P podpira samo enobajtna kodiranja in UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "izbira -P podpira le en vzorec"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "interna napaka (to tega ne bi smelo priti)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "prekora�ena meja PCRE za dolžino vrstice"
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "pomnilnik porabljen"
+
+#: src/pcresearch.c:310
+#, fuzzy, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "prekora�itev sklada PCRE JIT"
+
+#: src/pcresearch.c:315
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "prekora�ena meja PCRE za iskanje s povratnim sledenjem"
+
+#: src/pcresearch.c:319
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "prekora�ena meja PCRE za iskanje s povratnim sledenjem"
+
+#: src/pcresearch.c:327
+#, fuzzy, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "interna napaka PCRE: %d"
+
+#, c-format
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "opozorilo: uporabo GREP_OPTIONS odsvetujemo; uporabite alias ali skript"
+
+#, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "opozorilo: %s: %s"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "neveljavni %s%s argument '%s'"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "neveljavna pripona pri %s%s argumentu '%s'"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s: argument '%s' je prevelik"
+
+#, fuzzy
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "Spletna stran %s: <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "internal error"
+#~ msgstr "interna napaka"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: izbira »--%s« ne dovoljuje argumenta\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: neprepoznana izbira »--%s«\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: izbira »-W %s« ni enopomenska\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: izbira »-W %s« ne dovoljuje argumenta\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: izbira »-W %s« zahteva argument\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "klic lseek ni uspel"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "VZOREC je privzeto osnovni regularni izraz (ORI).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "Ukaz »egrep« pomeni isto kot »grep -E«, »fgrep« pa isto kot  »grep -F«.\n"
+#~ "Neposredna raba ukazov »egrep« ali »fgrep« je odsvetovana.\n"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Spletna stran GNU Grep: <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "neveljavno zaporedje bajtov UTF-8 na vhodu"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "VZOREC je razširjeni regularni izraz (RRI).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr ""
+#~ "Raba ukaza »egrep« je odsvetovana; namesto njega uporabite »grep -E«.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "VZOREC je množica nespremenljivih nizov, po eden v vrstici.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr ""
+#~ "Raba ukaza »fgrep« je odsvetovana; namesto njega uporabite »grep -F«.\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s lahko uporablja le skladnjo vzorcev %s"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "izbira --mmap je neaktivna od leta 2010 "
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "nedokon�ano število ponovitev"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "slabo dolo�eno število ponovitev"
+
+#~ msgid "writing output"
+#~ msgstr "pisanje rezultatov"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "v GREP_COLORS=\"%s\" mora \"%s\" vsebovati vrednost (\"=...\"); "
+#~ "ignorirano."
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "v GREP_COLORS=\"%s\" je \"%s\" Boolova spremenljivka in ji ne moremo "
+#~ "dolo�iti vrednosti (\"=%s\"); ignorirano"
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "v GREP_COLORS=\"%s\", \"%s\" vsebuje %s."
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "prekinjena obdelava slabo formuliranega dolo�ila GREP_COLORS=\"%s\" pri "
+#~ "preostalem podnizu \"%s\"."
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE;\n"
+#~ "                            TYPE is `binary', `text', or `without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories;\n"
+#~ "                            ACTION is `read', `recurse', or `skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+#~ "                            ACTION is `read' or `skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=FILE_PATTERN  search only files that match FILE_PATTERN\n"
+#~ "      --exclude=FILE_PATTERN  skip files and directories matching "
+#~ "FILE_PATTERN\n"
+#~ "      --exclude-from=FILE   skip files matching any file pattern from "
+#~ "FILE\n"
+#~ "      --exclude-dir=PATTERN directories that match PATTERN will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match print only names of FILEs containing no "
+#~ "match\n"
+#~ "  -l, --files-with-matches  print only names of FILEs containing matches\n"
+#~ "  -c, --count               print only a count of matching lines per "
+#~ "FILE\n"
+#~ "  -T, --initial-tab         make tabs line up (if needed)\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Nadzor izhoda:\n"
+#~ "  -m, --max-count=ŠTEVILO   odnehamo, ko je doseženo ŠTEVILO ujemanj\n"
+#~ "  -b, --byte-offset         z izpisom odmika (v zlogih)\n"
+#~ "  -n, --line-number         z izpisom zaporedne Å¡tevilke vrstice\n"
+#~ "      --line-buffered       izhodni medpomnilnik izpraznimo vsako "
+#~ "vrstico\n"
+#~ "  -H, --with-filename       z izpisom imena datoteke\n"
+#~ "  -h, --no-filename         brez izpisa imena datoteke\n"
+#~ "      --label=OZNAKA        z navedeno OZNAKO, kadar beremo s "
+#~ "standardnega vhoda\n"
+#~ "  -o, --only-matching       izpis samo dela vrstice z VZORCEM\n"
+#~ "  -q, --quiet, --silent     brez vsega obi�ajnega izpisa\n"
+#~ "      --binary-type=TIP     privzemi izbrani TIP binarne datoteke\n"
+#~ "                            TIP je lahko ,binary`, ,text` ali ,without-"
+#~ "match`\n"
+#~ "  -a, --text                isto kot --binary-type=text\n"
+#~ "  -I                        isto kot --binary-type=without-match\n"
+#~ "  -d, --directories=DEJANJE  kako obravnavamo imenike\n"
+#~ "                            DEJANJE je lahko ,read`, ,recurse` ali ,"
+#~ "skip`\n"
+#~ "  -D, --devices=DEJANJE     kako obravnavamo datoteke naprav\n"
+#~ "                            DEJANJE je lahko ,read` ali ,skip`\n"
+#~ "  -R, -r, --recursive       isto kot --directories=recurse\n"
+#~ "      --include=VZOREC      preiš�emo le datoteke, ki ustrezajo VZORCU\n"
+#~ "      --exclude=VZOREC      izpustimo datoteke, ki ustrezajo VZORCU\n"
+#~ "      --exclude-from=DATOTEKA  izpustimo datoteke, ki ustrezajo vzorcu v "
+#~ "DATOTEKI\n"
+#~ "      --exclude-dir=VZOREC  izpustimo imenike, ki ustrezajo VZORCU\n"
+#~ "  -L, --files-without-match le imena tistih DATOTEK, kjer VZORCA nismo "
+#~ "našli\n"
+#~ "  -l, --files-with-matches  le imena tistih DATOTEK, kjer smo VZOREC "
+#~ "našli\n"
+#~ "  -c, --count               le skupno Å¡tevilo vrstic v DATOTEKI, v "
+#~ "katerih se\n"
+#~ "                            pojavi VZOREC\n"
+#~ "  -T, --initial-tab         dodaj za�etni tabulator (�e je potrebno)\n"
+#~ "  -Z, --null                izpiši znak NUL za imenom DATOTEKE\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "neznana metoda imenikov"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Izbiri -P in -z se med seboj izklju�ujeta"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: nedovoljena izbira -- %c\n"
+
+#~ msgid "Copyright (C) 2008 Free Software Foundation, Inc.\n"
+#~ msgstr "Copyright (C) 2008 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions.  There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "To je prost program; pogoji, pod katerimi ga lahko uporabljate, "
+#~ "razmnožujete\n"
+#~ "in razširjate so navedeni v izvorni kodi. Za program ni NOBENEGA "
+#~ "jamstva,\n"
+#~ "niti jamstev USTREZNOSTI ZA PRODAJO ali PRIMERNOSTI ZA UPORABO.\n"
+
+#~ msgid "out of memory"
+#~ msgstr "zmanjkalo pomnilnika"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Uporaba: %s [IZBIRA]... VZOREC [DATOTEKA] ...\n"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid "option %s"
+#~ msgstr "izbira %s"
+
+#~ msgid " with arg %s"
+#~ msgstr " z argumentom %s"
+
+#~ msgid "digits occur in two different argv-elements.\n"
+#~ msgstr "Å¡tevke nastopajo pri dveh elementih ARGV.\n"
+
+#~ msgid "option %c\n"
+#~ msgstr "izbira %c\n"
+
+#~ msgid "option a\n"
+#~ msgstr "izbira a\n"
+
+#~ msgid "option b\n"
+#~ msgstr "izbira b\n"
+
+#~ msgid "option c with value `%s'\n"
+#~ msgstr "izbira c z vrednostjo ,%s`\n"
+
+#~ msgid "option d with value `%s'\n"
+#~ msgstr "izbira d z vrednostjo ,%s`\n"
+
+#~ msgid "?? getopt returned character code 0%o ??\n"
+#~ msgstr "?? funkcija getopt vrnila kodo znaka 0%o ??\n"
+
+#~ msgid "non-option ARGV-elements: "
+#~ msgstr "neizbirni elementi ARGV: "
+
+#~ msgid "memory exhausted\n"
+#~ msgstr "pomnilnik porabljen\n"
+
+#~ msgid "you may specify only one of -E, -F, or -G"
+#~ msgstr "izberete lahko samo eno od izbir: -E, -F ali -G"
+
+#~ msgid "GNU grep version 2.0"
+#~ msgstr "GNU grep verzija 2.0"
+
+#~ msgid "(standard input)\n"
+#~ msgstr "(standardni vhod)\n"
diff --git a/src/grep/po/sr.gmo b/src/grep/po/sr.gmo
new file mode 100644
index 0000000..ff696ad
--- /dev/null
+++ b/src/grep/po/sr.gmo
diff --git a/src/grep/po/sr.po b/src/grep/po/sr.po
new file mode 100644
index 0000000..43326f3
--- /dev/null
+++ b/src/grep/po/sr.po
@@ -0,0 +1,825 @@
+# Serbian translation of grep
+# Copyright © 2020 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Danilo Segan <dsegan@gmx.net>, 2003.
+# Миро�лав �иколић <miroslavnikolic@rocketmail.com>, 2011—2020.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep-3.5.16\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2020-11-05 13:11+0200\n"
+"Last-Translator: Миро�лав �иколић <miroslavnikolic@rocketmail.com>\n"
+"Language-Team: Serbian <(nothing)>\n"
+"Language: sr\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n"
+"%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "неи�праван аргумент „%s“ за „%s“"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "неја�ан аргумент „%s“ за „%s“"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "И�правни аргументи �у:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "грешка програма"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "прекорачење �премника"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "грешка пи�ања"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "неуравнотежена ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "неи�правна кла�а знака"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "�интак�а кла�е знака је [[:размак:]], а не [:размак:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "недовршена \\ излазим"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "неи�праван �адржај \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "регуларни израз је превелик"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "неуравнотежена ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "�интак�а није наведена"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "неуравнотежена )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "�епозната �и�тем�ка грешка"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: опција „%s%s“ је неја�на\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: опција „%s%s“ је неја�на; могућно�ти:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: непрепознатљива опција „%s%s“\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: опција „%s%s“ не дозвољава аргумент\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: опција „%s%s“ захтева аргумент\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: неи�правна опција —— „%c“\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: опција захтева аргумент —— „%c“\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "меморија је потрошена"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "не могу да �нимим тренутни радни директоријум"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "не могу да �е вратим у почетни радни директоријум"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "ни�ам у�пео да поде�им тек�туални/бинарни режим опи�ника датотеке"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "„"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "“"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "У�пешно"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "�ема подударања"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "�еи�праван регуларан израз"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "�еи�праван знак поретка"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "�еи�праван назив кла�е знака"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Водећа контра ко�а црта"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "�еи�правна повратна референца"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "�е одговара [, [^, [:, [., или [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "�е одговара ( или \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "�е одговара \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "�еи�праван �адржај \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "�еи�праван крај оп�ега"
+
+# и�црпљена? ;-)
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Меморија је потрошена"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "�еи�праван регуларан израз који претходи"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Прерани крај регуларног израза"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Регуларни израз је превелик"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "�е одговара ) или \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "�ема претходног регуларног израза"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Запаковао је %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Запаковао је %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Лиценца ОЈЛв3+: Гнуова ОЈЛ 3. издање или новије <%s>.\n"
+"Ово је �лободан �офтвер: �лободни �те да га мењате и ра�подељујете.\n"
+"�е по�тоји �ИК�КВ� Г�Р��ЦИЈ�, у оквирима дозвољеним законом.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "�апи�ао је %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "�апи�али �у %s и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "�апи�али �у %s, %s, и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"�апи�али �у %s, %s, %s,\n"
+"и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"�апи�али �у %s, %s, %s,\n"
+"%s, и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"�апи�али �у %s, %s, %s,\n"
+"%s, %s, и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"�апи�али �у %s, %s, %s,\n"
+"%s, %s, %s, и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"�апи�али �у %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"�апи�али �у %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, и %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"�апи�али �у %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, и други.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Грешке пријавите на: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Грешке %s пријавите на: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "%s матична �траница: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Општа помоћ за Гнуов �офтвер: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(�тандардни улаз)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "неи�праван аргумент дужине контек�та"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "улаз је превелик за пребројавање"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: бинарна датотека одговара"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: дубин�ко вртење кроз директоријуме"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: улазна датотека је такође излаз"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Употреба: %s [ОПЦИЈ�]... Ш�БЛО�И [Д�ТОТЕК�]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Пробајте „%s --help“ за више података.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Тражи наведене Ш�БЛО�Е у �вакој Д�ТОТЕЦИ.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Пример: %s -i „hello world“ menu.h main.c\n"
+"Ш�БЛО�И може да �адржи више шаблона раздвојених новим редовима.\n"
+"\n"
+"Одељак шаблона и тумачења:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp           Ш�БЛО�И �у проширени регуларни изрази\n"
+"  -F, --fixed-strings             Ш�БЛО�И �у ни�к\n"
+"  -G, --basic-regexp              Ш�БЛО�И �у о�новни регуларни изрази\n"
+"  -P, --perl-regexp               Ш�БЛО�И �у регуларни изрази Перла\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=Ш�БЛО�И            кори�ти Ш�БЛО�Е за подударање\n"
+"  -f, --file=Д�ТОТЕК�             преузима Ш�БЛО�Е из Д�ТОТЕКЕ\n"
+"  -i, --ignore-case               занемарује разлике величине �лова у "
+"шаблонима и подацима\n"
+"      --no-ignore-case            не занемарује разлике величине �лова "
+"(о�новно)\n"
+"  -w, --word-regexp               подудара једино целе речи\n"
+"  -x, --line-regexp               подудара једино целе редове\n"
+"  -z, --null-data                 ред података �е завршава 0-бајтом, не "
+"новим редом\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Разно:\n"
+"  -s, --no-messages               и�кључује поруке о грешкама\n"
+"  -v, --invert-match              бира не-одговарајуће редове\n"
+"  -V, --version                   и�пи�ује податке о издању и излази\n"
+"      --help                      приказује ову помоћ и излази\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Излазне контроле:\n"
+"  -m, --max-count=БРОЈ            зау�тавља након БРОЈ� изабраних редова\n"
+"  -b, --byte-offset               и�пи�ује померај бајта уз редове излаза\n"
+"  -n, --line-number               и�пи�ује број реда уз редове излаза\n"
+"      --line-buffered             претаче излаз на �ваком реду\n"
+"  -H, --with-filename             и�пи�ује назив датотеке �а редовима "
+"излаза\n"
+"  -h, --no-filename               поти�кује додавање префик�а називу "
+"датотеке на излазу\n"
+"      --label=��ТПИС              кори�ти ��ТПИС као префик� назива датотеке "
+"�тандардног улаза\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching             приказује �амо непразне делове редова који "
+"одговарају\n"
+"  -q, --quiet, --silent           поти�кује �ве нормалне излазе\n"
+"      --binary-files=ВРСТ�        �матра да �у извршне датотеке ВРСТЕ;\n"
+"                                  ВРСТ� може бити „binary“, „text“, или "
+"„without-match“\n"
+"  -a, --text                      и�то као и „--binary-files=text“\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                              и�то као и „--binary-files=without-match“\n"
+"  -d, --directories=Р�ДЊ�         како да рукује директоријумима;\n"
+"                                  Р�ДЊ� може бити „read“, „recurse“, или "
+"„skip“\n"
+"  -D, --devices=Р�ДЊ�             како да рукује уређајима, ФИФО-има и "
+"прикључницама;\n"
+"                                  Р�ДЊ� може бити „read“ или „skip“\n"
+"  -r, --recursive                 и�то као и „--directories=recurse“\n"
+"  -R, --dereference-recursive     �лично, али прати �ве �имболичке везе\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=ОПШТЕ             тражи �амо датотеке које �е поклапају �а "
+"ОПШТЕ (шаблон датотеке)\n"
+"      --exclude=ОПШТЕ             пре�каче датотеке које �е поклапају �а "
+"ОПШТЕ\n"
+"      --exclude-from=Д�ТОТЕК�     пре�каче датотеке које �е поклапају �а "
+"било којим шаблоном из Д�ТОТЕКЕ\n"
+"      --exclude-dir=ОПШТЕ         пре�каче директоријуме који �е поклапају "
+"�а ОПШТЕ\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match       и�пи�ује �амо називе Д�ТОТЕК� без "
+"изабраних редова\n"
+"  -l, --files-with-matches        и�пи�ује �амо називе Д�ТОТЕК� �а изабраним "
+"редовима\n"
+"  -c, --count                     и�пи�ује �амо број изабраних редова по "
+"Д�ТОТЕЦИ\n"
+"  -T, --initial-tab               помера табове ред горе (ако је потребно)\n"
+"  -Z, --null                      и�пи�ује 0-ти бајт након назива Д�ТОТЕКЕ\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Контроле контек�та:\n"
+"  -B, --before-context=БРОЈ       и�пи�ује БРОЈ редова водећег контек�та\n"
+"  -A, --after-context=БРОЈ        и�пи�ује БРОЈ редова пратећег контек�та\n"
+"  -C, --context=БРОЈ              и�пи�ује БРОЈ редова излазног контек�та\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -БРОЈ                           и�то као „--context=БРОЈ“\n"
+"      --color[=К�Д�],\n"
+"      --colour[=К�Д�]             кори�ти обележиваче за и�тицање "
+"поклапајућих ни�ки\n"
+"                                  К�Д� може бити „always“, „never“ или "
+"„auto“.\n"
+"  -U, --binary                    не и�еца ЦР знакове на крају реда (МСДОС/"
+"Виндоуз)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Када је Д�ТОТЕК� „-“, чита �тандардни улаз. Без Д�ТОТЕКЕ, чита . ако је "
+"дубин�ки,\n"
+"у �упротном „-“. Са мање од две Д�ТОТЕКЕ, подразумева �е „-h“.\n"
+"Излазно �тање је 0 ако је изабран неки ред, у �упротном 1;\n"
+"ако је дошло до неке грешке а „-q“ није дато, онда је излазно �тање 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "наведени �у трагачи у �укобу"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr "Поклапање за Перл није подржано у „--disable-perl-regexp“ извршној"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "неи�праван трагач %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "непознат метод уређаја"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "неи�праван највећи број"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "непозната вр�та бинарних датотека"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"�апи�али �у Мајк Хиртел и други; погледајте\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "ни�ам у�пео да доделим меморију за ПЦРЕ �ИТ �премник"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "„-P“ подржава �амо једнобајтне и УТФ-8 језике"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "опција „-P“ подржава �амо �амо�талне шаблоне"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "унутрашња грешка (не треба никада да �е де�и)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "прекорачено је ограничење дужине реда ПЦРЕ-а"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: меморија је потрошена"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: потрошени ПЦРЕ ЈИТ �премник"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: прекорачено је ПЦРЕ-ово ограничење тражења уназад"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: прекорачено је ограничење ПЦРЕ дубачења"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: унутрашња грешка ПЦРЕ-а: %d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "упозорење: „GREP_OPTIONS“ је за�тарело; кори�тите алија� или �крипту"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "упозорење: %s: %s"
+
+#~ msgid "%s home page: <http://www.gnu.org/software/%s/>\n"
+#~ msgstr "%s матична �траница: <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "неи�праван %s%s аргумент „%s“"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "неи�праван �уфик� у %s%s аргументу „%s“"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s аргумент „%s“ је превелик"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Мајк Хартел"
+
+#~ msgid "internal error"
+#~ msgstr "унутрашња грешка"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: опција „--%s“ не дозвољава аргумент\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: непрепознатљива опција „--%s“\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: опција „-W %s“ је дво�ми�лена\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: опција „-W %s“ не дозвољава аргумент\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: опција „-W %s“ захтева аргумент\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "„lseek“ није у�пело"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "Ш�БЛО� је, по о�нови, о�новни регуларан израз (BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "„egrep“ значи „grep -E“.  „fgrep“ значи „grep -F“.\n"
+#~ "Директно призивање као „egrep“ или „fgrep“ није одобрено.\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "непре�појено ^ или $ није подржано �а „-Pz“"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Матична �траница Г�У Грепа: <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "неи�праван низ УТФ-8 бита у улазу"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "Ш�БЛО� је проширени регуларан израз (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr "Позив као „egrep“ је за�тарео; кори�тите „grep -E“ уме�то тога.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "Ш�БЛО� је �куп �талних низова у новим редовима.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr "Позив као „fgrep“ је за�тарео; кори�тите „grep -F“ уме�то тога.\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s може да кори�ти �амо %s �интак�у шаблона"
diff --git a/src/grep/po/stamp-po b/src/grep/po/stamp-po
new file mode 100644
index 0000000..9788f70
--- /dev/null
+++ b/src/grep/po/stamp-po
@@ -0,0 +1 @@
+timestamp
diff --git a/src/grep/po/sv.gmo b/src/grep/po/sv.gmo
new file mode 100644
index 0000000..1c92496
--- /dev/null
+++ b/src/grep/po/sv.gmo
diff --git a/src/grep/po/sv.po b/src/grep/po/sv.po
new file mode 100644
index 0000000..9406e08
--- /dev/null
+++ b/src/grep/po/sv.po
@@ -0,0 +1,959 @@
+# Swedish messages for GNU Grep
+# Copyright © 1996, 1998, 1999, 2000, 2001, 2006, 2007, 2008, 2009, 2010, 2011, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Thomas Olsson <cid95tho@student1.lu.se>, 1996.
+# Daniel Resare <daniel@resare.com>, 1998, 1999, 2000, 2001.
+# Daniel Nylander <po@danielnylander.se>, 2006, 2007, 2008, 2009, 2010, 2011.
+# Anders Jonsson <anders.jonsson@norsjovallen.se>, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-09 11:55+0200\n"
+"Last-Translator: Anders Jonsson <anders.jonsson@norsjovallen.se>\n"
+"Language-Team: Swedish <tp-sv@listor.tp-sv.se>\n"
+"Language: sv\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: Poedit 2.4.2\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "ogiltigt argument %s för %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "tvetydigt argument %s för %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Giltiga argument är:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "programfel"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "stacköverspill"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "skrivfel"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "obalanserad ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "ogiltig teckenklass"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "syntax för teckenklass är [[:space:]], inte [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "oavslutad \\-sekvens"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "ogiltigt innehåll i \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "reguljärt uttryck är för stort"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "obalanserad ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "ingen syntax angiven"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "obalanserad )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Okänt systemfel"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: flaggan �%s%s� är tvetydig\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: flaggan �%s%s� är tvetydig. Möjligheter:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: okänd flagga �%s%s�\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: flaggan �%s%s� tillåter inget argument\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: flaggan �%s%s� behöver ett argument\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: ogiltig flagga -- �%c�\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: flaggan behöver ett argument -- �%c�\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "minnet är slut"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "kan inte notera aktuell arbetskatalog"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "misslyckades med att återvända till ursprunglig arbetskatalog"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "misslyckades med att ställa in text/binärläge för filbeskrivare"
+
+# Då det skulle krävas att spara hela filen i UTF-8 för att kunna göra
+# detta rätt, känns det inte värt det. Speciellt eftersom funktionen
+# inte används i grep
+#
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "�"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "�"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Lyckades"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Ingen träff"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Ogiltigt reguljärt uttryck"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Ogiltigt sorteringstecken"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Ogiltigt teckenklassnamn"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Efterföljande omvänt snedstreck"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Ogiltig bakåtreferens"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Omatchad [, [^, [:, [. eller [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Omatchad ( eller \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Omatchad \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Ogiltigt innehåll i \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Ogiltigt intervallslut"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Minnet är slut"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Ogiltigt inledande reguljärt uttryck"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "För tidigt slut på reguljärt uttryck"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Reguljärt uttryck är för stort"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Omatchad ) eller \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Inget tidigare reguljärt uttryck"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Paketerad av %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Paketerad av %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Licens GPLv3+: GNU GPL version 3 eller senare <%s>.\n"
+"Det här är fri programvara: du får ändra och distribuera den.\n"
+"Det finns INGEN GARANTI, så långt som tillåts enligt lag.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Skriven av %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Skriven av %s och %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Skriven av %s, %s och %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Skriven av %s, %s, %s\n"
+"och %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Skriven av %s, %s, %s,\n"
+"%s och %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Skriven av %s, %s, %s,\n"
+"%s, %s och %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Skriven av %s, %s, %s,\n"
+"%s, %s, %s och %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Skriven av %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"och %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Skriven av %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s och %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Skriven av %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s och andra.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"Rapportera fel till: %s\n"
+"Skicka synpunkter på översättningen till <tp-sv@listor.tp-sv.se>\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+"Rapportera fel i %s till: %s\n"
+"Skicka synpunkter på översättningen till <tp-sv@listor.tp-sv.se>\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Webbplats för %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Allmän hjälp för GNU-programvara: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standard in)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "ogiltigt argument till -A, -B eller -C"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "det är för mycket indata för att räkna"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: binär fil matchar"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: varning: rekursiv katalogloop"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: inmatningsfilen är även utmatningen"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Användning: %s [FLAGGA]... MÖNSTER [FIL]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Försök med �%s --help� för mer information\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Sök efter MÖNSTER i varje FIL.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Exempel: %s -i \"hello world\" menu.h main.c\n"
+"MÖNSTER kan innehålla flera mönster åtskilda av nyradstecken.\n"
+"\n"
+"Val och tolkning av mönster:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp      MÖNSTER är utökade reguljära uttryck\n"
+"  -F, --fixed-strings        MÖNSTER är strängar\n"
+"  -G, --basic-regexp         MÖNSTER är enkla reguljära uttryck\n"
+"  -P, --perl-regexp          MÖNSTER är reguljära uttryck som i Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=MÖNSTER       använd MÖNSTER som ett reguljärt uttryck\n"
+"  -f, --file=FIL             ta MÖNSTER från FIL\n"
+"  -i, --ignore-case          skilj ej på gemener och versaler i mönster och "
+"data\n"
+"      --no-ignore-case       skilj på gemener och versaler (standard)\n"
+"  -w, --word-regexp          matcha endast hela ord\n"
+"  -x, --line-regexp          matcha endast hela rader\n"
+"  -z, --null-data            en datarad slutar i 0 byte, inte nyradstecken\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Diverse:\n"
+"  -s, --no-messages         visa inga felmeddelanden\n"
+"  -v, --invert-match        välj rader utan träffar\n"
+"  -V, --version             visa versionsinformation och avsluta\n"
+"      --help                visa detta hjälpmeddelande och avsluta\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Kontroll av utmatning:\n"
+"  -m, --max-count=ANTAL     avsluta efter ANTAL träffar\n"
+"  -b, --byte-offset         skriv ut byte-offset med utmatningsrader\n"
+"  -n, --line-number         skriv ut radnummer med utmatningsrader\n"
+"      --line-buffered       spola utmatning för varje rad\n"
+"  -H, --with-filename       skriv ut filnamn med utmatningsrader\n"
+"  -h, --no-filename         skriv inte ut filnamnets prefix vid utmatning\n"
+"      --label=ETIKETT       skriv ut ETIKETT som filnamnsprefix för standard "
+"in\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       visa endast icke-tomma delar av rader som "
+"matchar\n"
+"  -q, --quiet, --silent     undertryck all normal utmatning\n"
+"      --binary-files=TYP    anta att binärfiler är av TYP;\n"
+"                            TYP  är �binary�, �text� eller �without-match�\n"
+"  -a, --text                samma som --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        samma som --binary-files=without-match\n"
+"  -d, --directories=ÅTGÄRD  hur kataloger ska hanteras;\n"
+"                            ÅTGÄRD är �read�, �recurse� eller �skip�\n"
+"  -D, --devices=ÅTGÄRD      hur enheter, FIFO och uttag ska hanteras;\n"
+"                            ÅTGÄRD är �read� eller �skip�\n"
+"  -r, --recursive           samma som --directories=recurse\n"
+"  -R, --dereference-recursive  detsamma, men följ alla symboliska länkar\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB        sök endast filer som matchar GLOB (ett "
+"filmönster)\n"
+"      --exclude=GLOB        hoppa över filer som matchar GLOB\n"
+"      --exclude-from=FIL    hoppa över filer som matchar filmönster från "
+"FIL\n"
+"      --exclude-dir=GLOB    kataloger som matchar GLOB hoppas över\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  skriv endast ut namn på FILer utan valda rader\n"
+"  -l, --files-with-matches  skriv endast ut namn på FILer med valda rader\n"
+"  -c, --count               skriv endast ut antalet valda rader per FIL\n"
+"  -T, --initial-tab         gör så att tabulatorer radas upp (om det "
+"behövs)\n"
+"  -Z, --null                skriv ut 0-tecken efter FILnamn\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Kontroll av sammanhang:\n"
+"  -B, --before-context=ANTAL skriv ANTAL rader före träffad rad\n"
+"  -A, --after-context=ANTAL  skriv ANTAL rader efter träffad rad\n"
+"  -C, --context=ANTAL        skriv ANTAL rader runt träffad rad\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -ANTAL                    samma som --context=ANTAL\n"
+"      --group-separator=SEP  skriv ut SEP på rad mellan matchningar med "
+"sammanhang\n"
+"      --no-group-separator  skriv inte ut separator för matchningar med "
+"sammanhang\n"
+"      --color[=NÄR],\n"
+"      --colour[=NÄR]        använd markörer för att särskilja träff\n"
+"                            NÄR kan vara �always�, �never� eller �auto�.\n"
+"  -U, --binary              ta inte bort CR-tecken vid radslut (MSDOS/"
+"Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"När FIL är �-�, läs från standard in.  Läs �.� då FIL saknas om\n"
+"rekursiv, läs �-� annars.  Om färre än två FILer anges, anta -h.\n"
+"Avslutningsstatus är 0 om någon rad, annars 1;\n"
+"om något fel inträffar och -q inte angavs, är avslutningsstatusen 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "motstridiga söksträngar angivna"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr "Perlmatchning stöds inte i ett bygge med --disable-perl-regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "ogiltig matchning %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "okänd metod för enheter"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "varning: --unix-byte-offsets (-u) är föråldrat"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "ogiltigt värde för antal träffar"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "okänd binärfiltyp"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"Skrivet av Mike Haertel och andra, se <https://git.sv.gnu.org/cgit/grep.git/"
+"tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "misslyckades med att allokera minne för JIT-stacken för PCRE"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P stöder endast unibyte- och UTF-8-lokaler"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "flaggan -P har endast stöd för ett mönster"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "internt fel (bör aldrig inträffa)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "översteg radlängdsgräns för PCRE"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: minnet är slut"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: fyllde JIT-stacken för PCRE"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: översteg gräns för PCRE-bakåtspårning"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: översteg rekursionsgräns för PCRE"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: internt PCRE-fel: %d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "warning: GREP_OPTIONS är föråldrat; använd ett alias eller ett skript"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "varning: %s: %s"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "Webbplats för %s: <https://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "ogiltigt %s%s-argument �%s�"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "ogiltigt suffix i %s%s-argumentet �%s�"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s-argumentet �%s� är för stort"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "internt fel"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: flaggan �--%s� tillåter inget argument\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: okänd flagga �--%s�\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: flaggan �-W %s� är tvetydig\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: flaggan �-W %s� tillåter inget argument\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: flaggan �-W %s� behöver ett argument\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "lseek misslyckades"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "MÖNSTER är, som standard, ett enkelt reguljärt uttryck (BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "�egrep� betyder �grep -E�.  �fgrep� betyder �grep -F�.\n"
+#~ "Direktanrop som antingen �egrep� eller �fgrep� är föråldrat.\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "oskyddat ^ eller $ stöds ej med -Pz"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Webbplats för GNU Grep: <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "ogiltig UTF-8-bytesekvens i inmatning"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "oavslutad repetitionsräknare"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "felformaterad repetionsräknare"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "MÖNSTER är ett utökat reguljärt uttryck (ERE).\n"
+
+#~ msgid "Invocation as `egrep' is deprecated; use `grep -E' instead.\n"
+#~ msgstr "Körning som \"egrep\" är föråldrat; använd \"grep -E\" istället.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "MÖNSTER är en uppsättning nyradsseparerade fasta strängar.\n"
+
+#~ msgid "Invocation as `fgrep' is deprecated; use `grep -F' instead.\n"
+#~ msgstr "Körning som \"fgrep\" är föråldrat; använd \"grep -F\" istället.\n"
+
+#~ msgid "writing output"
+#~ msgstr "skriver utdata"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s kan endast använda %s-mönstersyntax"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "i GREP_COLORS=\"%s\", \"%s\"-kapaciteten behöver ett värde (\"=...\"); "
+#~ "hoppades över"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "i GREP_COLORS=\"%s\", \"%s\"-kapaciteten är boolesk och kan inte ta ett "
+#~ "värde (\"=%s\"); hoppades över"
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "i GREP_COLORS=\"%s\", \"%s\"-kapaciteten %s"
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr ""
+#~ "stoppade behandling av felformulerad GREP_COLORS=\"%s\" på återstående "
+#~ "understrängen \"%s\""
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE;\n"
+#~ "                            TYPE is `binary', `text', or `without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories;\n"
+#~ "                            ACTION is `read', `recurse', or `skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+#~ "                            ACTION is `read' or `skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=FILE_PATTERN  search only files that match FILE_PATTERN\n"
+#~ "      --exclude=FILE_PATTERN  skip files and directories matching "
+#~ "FILE_PATTERN\n"
+#~ "      --exclude-from=FILE   skip files matching any file pattern from "
+#~ "FILE\n"
+#~ "      --exclude-dir=PATTERN directories that match PATTERN will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match print only names of FILEs containing no "
+#~ "match\n"
+#~ "  -l, --files-with-matches  print only names of FILEs containing matches\n"
+#~ "  -c, --count               print only a count of matching lines per "
+#~ "FILE\n"
+#~ "  -T, --initial-tab         make tabs line up (if needed)\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Styrning av utskrift:\n"
+#~ "  -m, --max-count=NUM       skriv bara ut NUM träffar\n"
+#~ "  -b, --byte-offset         skriv position med visade rader\n"
+#~ "  -n, --line-number         skriv radnummer med visade rader\n"
+#~ "      --line-buffered       töm utskriftsbuffer efter varje rad\n"
+#~ "  -H, --with-filename       skriv filnamn vid varje träff\n"
+#~ "  -h, --no-filename         skriv inte filnamn vid varje visad rad\n"
+#~ "      --label=ETIKETT       skriv ut ETIKETT som filnamn för standard in\n"
+#~ "  -o, --only-matching       visa endast delen av en rad som matchar "
+#~ "MÖNSTER\n"
+#~ "  -q, --quiet, --silent     undvik all normal utskrift\n"
+#~ "      --binary-files=TYP    antag att binära filer är av TYP\n"
+#~ "                            TYP är \"binary\", \"text\" eller \"without-"
+#~ "match\"\n"
+#~ "  -a, --text                motsvarar --binary-files=text\n"
+#~ "  -I                        motsvarar --binary-files=without-match\n"
+#~ "  -d, --directories=ÅTGÄRD  hur kataloger skall hanteras\n"
+#~ "                            ÅTGÄRD är \"read\", \"recurse\" eller \"skip"
+#~ "\".\n"
+#~ "  -D, --devices=ÅTGÄRD      hur enheter hanteras, FIFO:er och uttag\n"
+#~ "                            ÅTGÄRD är \"read\" eller \"skip\"\n"
+#~ "  -R, -r, --recursive       motsvarar --directories=recurse\n"
+#~ "      --include=MÖNSTER     filer som matchar MÖNSTER undersöks\n"
+#~ "      --exclude=MÖNSTER     filer som matchar MÖNSTER hoppas över\n"
+#~ "      --exclude-from=FIL    filer som matchar mönster i FIL hoppas över\n"
+#~ "      --exclude-dir=MÖNSTER kataloger som matchar MÖNSTER hoppas över.\n"
+#~ "  -L, --files-without-match skriv bara ut FILnamn utan träffar\n"
+#~ "  -l, --files-with-matches  skriv bara ut FILnamn med träffar\n"
+#~ "  -c, --count               skriv för varje FIL bara ut antal träffade "
+#~ "rader\n"
+#~ "  -T, --initial-tab         gör så tabulatorer radar upp (om det behövs)\n"
+#~ "  -Z, --null                skriv 0-byte efter FILnamn\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "okänd metod gällande kataloger"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "Flaggorna -P och -z kan inte kombineras"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: otillåten flagga -- %c\n"
+
+#~ msgid "Copyright (C) 2008 Free Software Foundation, Inc.\n"
+#~ msgstr "Copyright © 2008 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions.  There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Det här är fri programvara, se källkoden för kopieringsvillkor. Det\n"
+#~ "finns INGEN garanti, inte ens för SÄLJBARHET eller LÄMPLIGHET FÖR NÅGOT\n"
+#~ "SPECIELLT ÄNDAMÅL.\n"
+
+#~ msgid "out of memory"
+#~ msgstr "minnet slut"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Användning: %s [FLAGGA]... MÖNSTER [FIL]...\n"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
diff --git a/src/grep/po/th.gmo b/src/grep/po/th.gmo
new file mode 100644
index 0000000..a2e95cd
--- /dev/null
+++ b/src/grep/po/th.gmo
diff --git a/src/grep/po/th.po b/src/grep/po/th.po
new file mode 100644
index 0000000..314acc6
--- /dev/null
+++ b/src/grep/po/th.po
@@ -0,0 +1,788 @@
+# Translation of grep messages to Thai.
+# Copyright (C) 2018 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Seksan Poltree <seksan.poltree@gmail.com>, 2009-2018.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep-3.1.48\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2018-12-17 01:11+0700\n"
+"Last-Translator: Seksan Poltree <seksan.poltree@gmail.com>\n"
+"Language-Team: Thai <thai-l10n@googlegroups.com>\n"
+"Language: th\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "อาร์�ิวเมนต์ %s ไม่ถู�ต้องสำหรับ %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "อาร์�ิวเมนต์ %s �ำ�วมไม่ชัดเจน สำหรับ %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "อาร์�ิวเมนต์ที่ใช้ได้ ได้��่:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "โปร��รมผิดพลาด"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "stack overflow"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "�ารเขียนผิดพลาด"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "[ ไม่สมดุล�ัน"
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "ชื่อ�ลุ่มชุดอั�ขระไม่ถู�ต้อง"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "วา�ยสัมพันธ์ของ�ลุ่มชุดอั�ขระ คือ [[:space:]], ไม่ใช่ [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "เครื่องหมายหลี� \\ ไม่จบ"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "เนื้อหาของ \\{\\} ไม่ถู�ต้อง"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "นิพจน์ป�ติให�่เ�ินไป"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "( ไม่สมดุล�ัน"
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "ไม่ระบุวา�ยสัมพันธ์"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr ") ไม่สมดุล�ัน"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "ข้อผิดพลาดของระบบที่ไม่รู้จั�"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: ตัวเลือ� '%s%s' คลุมเครือไม่ชัดเจน\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: ตัวเลือ� '%s%s' คลุมเครือไม่ชัดเจน; เป็นไปได้ที่จะเป็น:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: ตัวเลือ�ที่ไม่รู้จั� '%s%s'\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: ตัวเลือ� '%s%s' ไม่อนุ�าตให้มีอาร์�ิวเมนต์\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: ตัวเลือ� '%s%s' ต้อง�ารอาร์�ิวเมนต์\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: ตัวเลือ�ไม่ถู�ต้อง -- '%c'\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: ตัวเลือ�ต้อง�ารอาร์�ิวเมนต์ -- '%c'\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "หน่วยความจำถู�ใช้จนหมด"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "ไม่สามารถบันที�ไดเร�ทอรีที่ทำงานปัจจุบัน"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "ล้มเหลวใน�าร�ลับไปยังไดเร�ทอรีทำงานเริ่มต้น"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "ล้มเหลวใน�ารตั้งค่าตัวอธิบายไฟล์ในโหมดข้อความ/ไบนารี"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "`"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "สำเร็จ"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "ไม่ตรง�ัน"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "นิพจน์ป�ติไม่ถู�ต้อง"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "ผล�ารเทียบ�ันของอั�ขระผิดพลาด"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "ชื่อ�ลุ่มชุดอั�ขระไม่ถู�ต้อง"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "เครื่องหมาย�บ็คส�ลชตามท้าย"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "�ารอ้างอิง�ลับไม่ถู�ต้อง"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "ไม่ตรง�ัน�ับ [, [^, [:, [., หรือ [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "ไม่ตรง�ัน�ับ ( หรือ \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "ไม่ตรง�ัน�ับ \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "เนื้อหาของ \\{\\} ไม่ถู�ต้อง"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "ช่วงจบไม่ถู�ต้อง"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "หน่วยความจำถู�ใช้จนหมด"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "นิพจน์ป�ติ�่อนหน้าไม่ถู�ต้อง"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "นิพจน์ป�ติจบโดยยังไม่สมบูรณ์"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "นิพจน์ป�ติให�่เ�ินไป"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "ไม่ตรง�ัน�ับ ) หรือ \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "ไม่มีนิพจน์ป�ติ�่อนหน้า"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "สร้าง�พ�เ�จโดย %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "สร้าง�พ�เ�จโดย %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, fuzzy, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"\n"
+"สั��าอนุ�าต GPLv3+: GNU GPL รุ่น 3 หรือใหม่�ว่า <http://www.gnu.org/licenses/gpl."
+"html>\n"
+"นี่เป็นซอฟต์�วร์เสรี: คุณมีเสรีใน�ารปรับเปลี่ยน�ละ�ารส่งต่อมัน.\n"
+"มี�ารไม่รับประ�ัน, จา�ขอบเขตที่อนุ�าตโดย�ฎหมาย.\n"
+"\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "เขียนโดย %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "เขียนโดย  %s �ละ %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "เขียนโดย  %s, %s, �ละ %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"เขียนโดย  %s, %s, %s,\n"
+"�ละ %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"เขียนโดย  %s, %s, %s,\n"
+"%s, �ละ %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"เขียนโดย  %s, %s, %s,\n"
+"%s, %s, �ละ %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"เขียนโดย  %s, %s, %s,\n"
+"%s, %s, %s, �ละ %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"เขียนโดย  %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"�ละ %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"เขียนโดย  %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, �ละ %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"เขียนโดย  %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, �ละคณะ.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"รายงานข้อผิดพลาดไปยัง: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "รายงานข้อผิดพลาดของ %s ไปยัง: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "โฮมเพจของ %s : <%s>\n"
+
+#: lib/version-etc.c:260
+#, fuzzy, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "ความช่วยเหลือทั่วไปใน�ารใช้ซอฟต์�วร์ GNU: <https://www.gnu.org/gethelp/>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(นำเข้ามาตร�าน)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "ความยาวบริบทอาร์�ิวเมนต์ไม่ถู�ต้อง"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "ข้อมูลเข้ายาวเ�ิน�ว่าจะนับได้"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "ตรง�ัน�ัน�ับ�ฟ้ม�านสอง %s\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "เรีย�ซ้ำไดเร�ทอรีเป็นวงวน"
+
+#: src/grep.c:1899
+#, fuzzy, c-format
+msgid "%s: input file is also the output"
+msgstr "�ฟ้มนำเข้า %s เป็น�ฟ้มส่งออ�ด้วยเหมือน�ัน"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "วิธีใช้: %s [OPTION]… PATTERNS [FILE]…\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "ลองใช้ '%s --help' เพื่อข้อมูลเพิ่มเติม.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "ค้นหาสำหรับ PATTERNS ใน�ต่ละ FILE.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"ตัวอย่าง: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS สามารถประ�อบด้วยหลายรูป�บบโดย�ย�ด้วยตัวขึ้นบรรทัดใหม่\n"
+"\n"
+"�ารเลือ�นิพจน์ป�ติ�ละ�าร�ปลความหมาย:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     PATTERNS เป็นส่วนขยายนิพจน์ป�ติ\n"
+"  -F, --fixed-strings       PATTERNS เป็นชุดสายอั�ขระ\n"
+"  -G, --basic-regexp        PATTERNS เป็นนิพจน์ป�ติพื้น�าน (BRE)\n"
+"  -P, --perl-regexp         PATTERNS เป็นนิพจน์ป�ติภาษา Perl\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=PATTERN      ใช้ PATTERNS สำหรับ�ารจับคู่�ัน\n"
+"  -f, --file=FILE           รับ PATTERNS มาจา� FILE\n"
+"  -i, --ignore-case         เพิ�เฉยต่อความ�ต�ต่างอั�ษรให�่เล็�\n"
+"  -w, --word-regexp         บังคับให้จับคู่เฉพาะที่ตรง�ันทั้งคำเท่านั้น\n"
+"  -x, --line-regexp         บังคับให้จับคู่เฉพาะที่ตรง�ันทั้งบรรทัดเท่าทั้น\n"
+"  -z, --null-data           ข้อมูลบรรทัดจบด้วยขนาด 0 ไบต์, ไม่มีตัวขึ้นบรรทัดใหม่\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"เบ็ดเตล็ด:\n"
+"  -s, --no-messages         ระงับข้อความ�สดงข้อผิดพลาด\n"
+"  -v, --invert-match        เลือ�บรรทัดที่ไม่ตรง�ัน\n"
+"  -V, --version             พิมพ์ข้อมูลรุ่น�ล้วออ�\n"
+"      --help                �สดงความช่วยเหลือนี้�ล้วออ�\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"ควบคุม�ารนำออ�:\n"
+"  -m, --max-count=NUM       หยุดหลังจา�มี NUM บรรทัดที่ถู�เลือ�\n"
+"  -b, --byte-offset         พิมพ์�ารชดเชยไบต์�ับบรรทัดนำออ�\n"
+"  -n, --line-number         พิมพ์หมายเลขบรรทัด�ับบรรทัดนำออ�\n"
+"      --line-buffered       ล้างนำออ�บนทุ� ๆ บรรทัด\n"
+"  -H, --with-filename       พิมพ์ชื่อ�ฟ้ม�ับบรรทัดนำออ�\n"
+"  -h, --no-filename         ระงับคำนำหน้าชื่อ�ฟ้มใน�ารนำออ�\n"
+"      --label=LABEL         ใช้ LABEL เป็นชื่อคำนำหน้า�ฟ้มสำหรับนำเข้ามาตร�าน\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       �สดงเพียง�ต่ส่วนของบรรทัดที่ไม่ว่างเปล่าของบรรทัดที่ตรง�ัน\n"
+"  -q, --quiet, --silent     ระงับนำออ�ป�ติทั้งหมด\n"
+"      --binary-files=TYPE   ทึ�ทั�เอาว่า�ฟ้ม�านสองเป็น TYPE;\n"
+"                            TYPE เป็น 'binary', 'text', หรือ 'without-match'\n"
+"  -a, --text                มีค่าเท่า�ัน�ับ --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        มีค่าเท่า�ัน�ับ --binary-files=without-match\n"
+"  -d, --directories=ACTION  จะทำ�ารจัด�ารไดเร�ทอรีอย่างไร;\n"
+"                            ACTION เป็น 'read', 'recurse', หรือ 'skip'\n"
+"  -D, --devices=ACTION      จะทำ�ารจัด�ารอุป�รณ์อย่างไร, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           เหมือน�ับ --directories=recurse\n"
+"  -R, --dereference-recursive  เช่น�ัน, �ต่ตาม symlink ทั้งหมด\n"
+
+#: src/grep.c:2023
+#, fuzzy, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB  ค้นหาเพียง�ต่�ฟ้มที่ตรง�ัน�ับ GLOB(รูป�บบชื่อไฟล์)\n"
+"      --exclude=GLOB  ข้าม�ฟ้ม�ละไดเร็�ทอรีที่ตรง�ัน�ับ GLOB\n"
+"      --exclude-from=FILE   ข้าม�ฟ้มที่ตรง�ัน�ับ�บบ�ผน�ฟ้มจา� FILE\n"
+"      --exclude-dir=GLOB  ข้ามไดเร็�ทอรีที่ตรง�ัน�ับ GLOB\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  พิมพ์เพียง�ค่ชื่อของ FILEs ที่ไม่ตรง�ัน�ับบรรทัดที่ถู�เลือ�\n"
+"  -l, --files-with-matches  พิมพ์เพียง�ค่ชื่อของ FILEs �ับบรรทัดที่ถู�เลือ�\n"
+"  -c, --count               พิมพ์เพียง�ต่จำนวนบรรทัดที่ตรง�ันที่นับได้ใน�ต่ละ FILE\n"
+"  -T, --initial-tab         ทำ�ารจัดเตรียม�ท็บ (ถ้าจำเป็น)\n"
+"  -Z, --null                พิมพ์ 0 ไบต์หลังชื่อ FILE\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"ควบคุมบริบท:\n"
+"  -B, --before-context=NUM  พิมพ์ NUM บรรทัดของบริบทส่วนนำ\n"
+"  -A, --after-context=NUM   พิมพ์ NUM บรรทัดของบริบทส่วนตาม\n"
+"  -C, --context=NUM         พิมพ์ NUM บรรทัดของบริบทส่งออ�\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      เหมือน�ับ --context=NUM\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       ใช้เครื่องหมาย�ำ�ับเพื่อเน้นสายอั�ขระที่ตรง�ัน;\n"
+"                            เมื่อ WHEN ได้��่ 'always', 'never', หรือ 'auto'\n"
+"  -U, --binary              ไม่ต้องถอดอั�ขระ CR ที่ EOL (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"เมื่อ FILE เป็น -, อ่านจา�นำเข้ามาตร�าน. �ับไม่มี FILE อ่าน. ถ้าเรีย�ซ้ำ\n"
+",  - �ทน. ถ้าให้ FILE มาน้อย�ว่าสอง. ทึ�ทั�เอาว่าเป็น -h\n"
+"สถานะ�ารออ�เป็น 0 เมื่อบรรทัดใด ๆ (หรือ ไฟล์ถ้า -L)ถู�เลือ�, 1�ทน ;\n"
+"ถ้าเ�ิดข้อผิดพลาดขึ้น�ละ -q ไม่ได้ถู�ให้มา, สถานะ�ารออ�เป็น 2\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "�ารขัด�ย้งของ�ารตรง�ันได้รับ�ารระบุ"
+
+#: src/grep.c:2101
+#, fuzzy
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr "�ารสนับสนุนตัวเลือ� -P ไม่ได้ถู�รวบรวมไปยัง�ฟ้ม�านสอง --disable-perl-regexp นี้"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "ตัวจับคู่ไม่ถู�ต้อง %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "ไม่รู้จั��ระบวน�ารอุป�รณ์"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "ตัวนับสูงสุดไม่ถู�ต้อง"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "ชนิด�ฟ้มไบนารีที่ไม่รู้จั�"
+
+#: src/grep.c:2829
+#, fuzzy
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr "อื่น ๆ , ดูที่ <https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "ล้มเหลวที่จะจัดสรรหน่วยความจำสำหรับส�ต็� PCRE JIT"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P สนับสนุนเฉพาะโล�คล unibyte �ละ UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "ตัวเลือ� -P สนับสนุนรูป�บบเดียวเท่านั้น"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "ข้อผิดพลาดภายใน (ไม่ควรเ�ิดขึ้นมา�่อน)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "ขอบเขตความยาวบรรทัด PCRE เ�ินจา�ข้อจำ�ัด"
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "หน่วยความจำถู�ใช้จนหมด"
+
+#: src/pcresearch.c:310
+#, fuzzy, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "�สต็� PCRE JIT ถู�ใช้จนหมด�ล้ว"
+
+#: src/pcresearch.c:315
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "ขอบเขต�าร backtrack ของ PCRE เ�ินจา�ข้อจำ�ัด"
+
+#: src/pcresearch.c:319
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "ขอบเขต�าร backtrack ของ PCRE เ�ินจา�ข้อจำ�ัด"
+
+#: src/pcresearch.c:327
+#, fuzzy, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "ข้อผิดพลาด PCRE ภายใน: %d"
+
+#, c-format
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr "คำเตือน: GREP_OPTIONS ไม่สนับสนุนให้ใช้ ; �รุณาใช้นาม��งหรือสคริปต์"
+
+#, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "คำเตือน: %s: %s"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "%s%s รับอาร์�ิวเมนต์ที่ไม่ถู�ต้อง '%s'"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "คำเสริมท้ายไม่ถู�ต้องใน %s%s อาร์�ิวเมนต์ '%s'"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s อาร์�ิวเมนต์ '%s' ให�่มา�เ�ินไป"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "โฮมเพจของ %s : <http://www.gnu.org/software/%s/>\n"
+
+#~ msgid "internal error"
+#~ msgstr "ข้อผิดพลาดภายใน"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "ไมค์ ฮาเออร์เทล"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: ตัวเลือ� '--%s' ไม่อนุ�าตให้มีอาร์�ิวเมนต์\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: ตัวเลือ�ที่ไม่รู้จั� '--%s'\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: ตัวเลือ� '-W %s' คลุมเครือไม่ชัดเจน\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: ตัวเลือ� '-W %s' ไม่อนุ�าตให้มีอาร์�ิวเมนต์\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: ตัวเลือ� '-W %s' ต้อง�ารอาร์�ิวเมนต์\n"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "PATTERN โดยมาตร�านเป็นนิพจน์ป�ติพื้น�าน (BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "'egrep'  หมายถึง 'grep -E'. 'fgrep' หมายถึง 'grep -F'.\n"
+#~ "�ารร้องขอโดยตรงทั้ง 'egrep' หรือ 'fgrep' ไม่�นะนำให้ใช้.\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "lseek ล้มเหลว"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "โฮมเพจ GNU Grep : <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "ลำดับไบต์ UTF-8 ที่นำเข้าไม่ถู�ต้อง"
diff --git a/src/grep/po/tr.gmo b/src/grep/po/tr.gmo
new file mode 100644
index 0000000..14ed8d6
--- /dev/null
+++ b/src/grep/po/tr.gmo
diff --git a/src/grep/po/tr.po b/src/grep/po/tr.po
new file mode 100644
index 0000000..96e6cca
--- /dev/null
+++ b/src/grep/po/tr.po
@@ -0,0 +1,816 @@
+# Turkish translations for GNU grep messages.
+# Copyright (C) 2005 Free Software Foundation, Inc.
+# Nilgün Belma Bugüner <nilgun@superonline.com>, 2001, ..., 2005
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 2.5.1a\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2005-03-04 16:37+0300\n"
+"Last-Translator: Nilgün Belma Bugüner <nilgun@superonline.com>\n"
+"Language-Team: Turkish <gnu-tr-u12a@lists.sourceforge.net>\n"
+"Language: tr\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: KBabel 1.0\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr ""
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr ""
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr ""
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr ""
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr ""
+
+#: lib/dfa.c:896
+#, fuzzy
+msgid "unbalanced ["
+msgstr "Karşılıksız ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr ""
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr ""
+
+#: lib/dfa.c:1210
+#, fuzzy
+msgid "unfinished \\ escape"
+msgstr "Tamamlanmamış \\ öncelemi"
+
+#: lib/dfa.c:1371
+#, fuzzy
+msgid "invalid content of \\{\\}"
+msgstr "en çok miktarı geçersiz"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr ""
+
+#: lib/dfa.c:1858
+#, fuzzy
+msgid "unbalanced ("
+msgstr "Karşılıksız ("
+
+#: lib/dfa.c:1975
+#, fuzzy
+msgid "no syntax specified"
+msgstr "Sözdizimi belirtilmemiş"
+
+#: lib/dfa.c:1986
+#, fuzzy
+msgid "unbalanced )"
+msgstr "Karşılıksız )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Bilinmeyen sistem hatası"
+
+#: lib/getopt.c:278
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: `%s' seçeneği belirsiz\n"
+
+#: lib/getopt.c:284
+#, fuzzy, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: `%s' seçeneği belirsiz\n"
+
+#: lib/getopt.c:319
+#, fuzzy, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: `%c%s' seçeneği bilinmiyor\n"
+
+#: lib/getopt.c:345
+#, fuzzy, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: seçenek `%c%s' argümansız kullanılır\n"
+
+#: lib/getopt.c:360
+#, fuzzy, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: `%s' seçeneği bir argümanla kullanılır\n"
+
+#: lib/getopt.c:621
+#, fuzzy, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: geçersiz seçenek -- %c\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, fuzzy, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: seçenek bir argümanla kullanılır -- %c\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "bellek tükendi"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr ""
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr ""
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "`"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr ""
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr ""
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Bellek tükendi"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ""
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr ""
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr ""
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr ""
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr ""
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, fuzzy, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"\n"
+"Yazılım hatalarını <bug-grep@gnu.org> adresine,\n"
+"çeviri hatalarını <gnu-tr-u12a@lists.sourceforge.net> adresine bildirin.\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr ""
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(standart girdi)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "bağlam uzunluk değeri geçersiz"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "girdi sayılamayacak kadar büyük"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "Ä°kilik dosya %s eÅŸleÅŸir\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "ardışık dizin çevrimi"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr ""
+
+#: src/grep.c:1961 src/grep.c:1968
+#, fuzzy, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Kullanımı: %s [SEÇENEK]... MASKE [DOSYA]...\n"
+
+#: src/grep.c:1963
+#, fuzzy, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Daha fazla bilgi için `%s --help' yazın.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr ""
+
+#: src/grep.c:1970
+#, fuzzy, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Standart girdi ya da her DOSYA içinde KALIP için arama yapar.\n"
+"Örneğin: %s -i 'merhaba dunya' menu.h main.c\n"
+"\n"
+"Düzenli ifade seçimi ve yorumlanması:\n"
+
+#: src/grep.c:1975
+#, fuzzy, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     KALIP bir genişletilmiş düzenli ifadedir\n"
+"  -F, --fixed-strings       KALIP satır satır ayrılmış bir dizgedir\n"
+"  -G, --basic-regexp        KALIP bir temel düzenli ifadedir\n"
+"  -P, --perl-regexp         KALIP bir Perl düzenli ifadesidir\n"
+
+#: src/grep.c:1981
+#, fuzzy, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=KALIP     KALIP bir düzenli ifade olarak kullanılır\n"
+"  -f, --file=DOSYA       KALIP DOSYA dan alınır\n"
+"  -i, --ignore-case      harf büyüklüklerini bir ayrım olarak görmez\n"
+"  -w, --word-regexp      KALIP bir deyim olarak ele alınır\n"
+"  -x, --line-regexp      KALIP bir bütün satır olarak ele alınır\n"
+"  -z, --null-data        satır sonu içermeyen 0 baytlık satır\n"
+
+#: src/grep.c:1989
+#, fuzzy, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Çeşitli:\n"
+"  -s, --no-messages         hata iletileri gösterilmez\n"
+"  -v, --invert-match        eşleşmeyen satırlar seçilir\n"
+"  -V, --version             sürümü gösterir ve çıkar\n"
+"      --help                bu iletileri gösterir ve çıkar\n"
+"      --mmap                mümkünse bellek-eşlemli girdi kullanılır\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"\n"
+"BaÄŸlamsal denetim:\n"
+"  -B, --before-context=SAYI bağlamdan önceki SAYI satır gösterilir\n"
+"  -A, --after-context=SAYI  bağlamdan sonraki SAYI satır gösterilir\n"
+"  -C, --context=SAYI        çıktı olarak SAYI satır gösterilir\n"
+"  -SAYI                     --context=SAYI ile aynı\n"
+"      --color[=SÜREÇ],\n"
+"      --colour[=SÜREÇ]      eşleşen dizgeleri ayırt etmede renk kullanılır\n"
+"                            SÜREÇ: daima 'always', hiç 'never', 'auto'  -U, "
+"--binary              satır sonlarındaki satırbaşı (CR) karakterlerini\n"
+"                            kaldırmaz\n"
+"  -u, --unix-byte-offsets   satırbaşı karakterlerine bakmaz\n"
+"\n"
+"`egrep' ile `grep -E',  `fgrep' ile `grep -F' aynı işi yapar.\n"
+"DOSYA verilmeksizin ya da yerine - verilirse standart girdi okunur.\n"
+"İki DOSYAdan az verilmişse -h varsayılır.\n"
+"Çıkışta durum eşleşme varsa 0, yoksa 1, belirsizlik varsa 2 dir.\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "birbiriyle çatışan eşleştiriciler belirtildi"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+
+#: src/grep.c:2103
+#, fuzzy, c-format
+msgid "invalid matcher %s"
+msgstr "en çok miktarı geçersiz"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "bilinmeyen aygıt yöntemi"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "en çok miktarı geçersiz"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "bilinmeyen ikilik dosya türü"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr ""
+
+#: src/pcresearch.c:143
+#, fuzzy
+msgid "the -P option only supports a single pattern"
+msgstr "-P seçeneği desteklenmiyor"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr ""
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr ""
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "bellek tükendi"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr ""
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr ""
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr ""
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr ""
+
+#, fuzzy, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "uyarı: %s: %s\n"
+
+#, fuzzy
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: `--%s' seçeneği argümansız kullanılır\n"
+
+#, fuzzy
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: `--%s' seçeneği bilinmiyor\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: `-W %s' seçeneği belirsiz\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: `-W %s' seçeneği argümansız kullanılır\n"
+
+#, fuzzy
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: `%s' seçeneği bir argümanla kullanılır\n"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "Tamamlanmamış tekrar sayısı"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "Tekrar sayısı hatalı"
+
+#~ msgid "out of memory"
+#~ msgstr "bellek yetersiz"
+
+#~ msgid "writing output"
+#~ msgstr "çıktıyı yazıyor"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "Kullanımı: %s [SEÇENEK]... KALIP [DOSYA] ...\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE\n"
+#~ "                            TYPE is 'binary', 'text', or 'without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories\n"
+#~ "                            ACTION is 'read', 'recurse', or 'skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets\n"
+#~ "                            ACTION is 'read' or 'skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=PATTERN     files that match PATTERN will be examined\n"
+#~ "      --exclude=PATTERN     files that match PATTERN will be skipped.\n"
+#~ "      --exclude-from=FILE   files that match PATTERN in FILE will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match only print FILE names containing no match\n"
+#~ "  -l, --files-with-matches  only print FILE names containing matches\n"
+#~ "  -c, --count               only print a count of matching lines per "
+#~ "FILE\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "Çıktı denetimi:\n"
+#~ "  -m, --max-count=SAYI      SAYI eÅŸleÅŸmeden sonra durur\n"
+#~ "  -b, --byte-offset         çıktı satırlarında bayt adresi de gösterilir\n"
+#~ "  -n, --line-number         çıktı satırlarında satır no.ları da "
+#~ "gösterilir\n"
+#~ "      --line-buffered       her satırda tüm çıktı gösterilir\n"
+#~ "  -H, --with-filename       her eşleşmede dosya ismi de gösterilir\n"
+#~ "  -h, --no-filename         dosya ismi gösterilmez\n"
+#~ "      --label=ETİKET        standar girdi dosyası olarak ETİKET "
+#~ "gösterirlir\n"
+#~ "  -o, --only-matching       sadece satırın KALIPla eşleşen bölümü "
+#~ "gösterilir\n"
+#~ "  -q, --quiet, --silent     çıktı verilmez\n"
+#~ "      --binary-files=TÜR    ikilik dosyalar TÜR türünde varsayılır\n"
+#~ "                            TÃœR: 'binary', 'text', ya da 'without-match'\n"
+#~ "  -a, --text                --binary-files=text ile aynı\n"
+#~ "  -I                        --binary-files=without-match ile aynı\n"
+#~ "  -d, --directories=EYLEM   dizinlerin ele alınma şekli\n"
+#~ "                            EYLEM: 'read', 'recurse', ya da 'skip'\n"
+#~ "  -D, --devices=EYLEM       aygıtların ele alınma şekli, FIFO ve "
+#~ "soketler\n"
+#~ "                            için EYLEM: 'read' ya da 'skip'\n"
+#~ "  -R, -r, --recursive       --directories=recurse ile aynı (ardışık)\n"
+#~ "      --include=KALIP       KALIP ile eşleşen dosyalar gösterilir\n"
+#~ "      --exclude=KALIP       KALIP ile eşleşen dosyalar atlanır\n"
+#~ "      --exclude-from=DOSYA  DOSYA içindeki dosyalardan KALIP ile "
+#~ "eşleşenler atlanır.\n"
+#~ "  -L, --files-without-match sadece eşleşmeyen DOSYA isimleri gösterilir\n"
+#~ "  -l, --files-with-matches  sadece eşleşen DOSYA isimleri gösterilir\n"
+#~ "  -c, --count               her DOSYAdaki eşleşen satır sayısı "
+#~ "gösterilir\n"
+#~ "  -Z, --null                DOSYA isminin arkasına null ekler\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "bilinmeyen dizin yöntemi"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+#~ msgstr ""
+#~ "Telif Hakkı 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions. There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "Bu serbest yazılımdır; kopyalama koşulları için kaynak koduna bakınız.\n"
+#~ "Hiçbir garantisi yoktur; hatta SATILABİLİRLİĞİ veya ŞAHSİ KULLANIMINIZA\n"
+#~ "UYGUNLUĞU için bile garanti verilmez.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "-P ve -z seçenekleri birlikte olamaz"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: kuraldışı seçenek -- %c\n"
diff --git a/src/grep/po/uk.gmo b/src/grep/po/uk.gmo
new file mode 100644
index 0000000..3e9e1b6
--- /dev/null
+++ b/src/grep/po/uk.gmo
diff --git a/src/grep/po/uk.po b/src/grep/po/uk.po
new file mode 100644
index 0000000..3eeff84
--- /dev/null
+++ b/src/grep/po/uk.po
@@ -0,0 +1,772 @@
+# grep -- Ukrainian translation.
+# Copyright (C) 2003 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+#
+# Volodymyr M. Lisivka <lvm@mystery.lviv.net>, 2001-2002.
+# Dmytro O. Redchuk <dor@kiev-online.net>, 2002.
+# Yuri Chornoivan <yurchor@ukr.net>, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep-3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-09 11:00+0300\n"
+"Last-Translator: Yuri Chornoivan <yurchor@ukr.net>\n"
+"Language-Team: Ukrainian <trans-uk@lists.fedoraproject.org>\n"
+"Language: uk\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+"X-Generator: Lokalize 20.12.0\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "некоректний аргумент, %s, %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "неоднозначний аргумент, %s, %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Спи�ок коректних аргументів:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "помилка програми"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "переповненн� �тека"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "помилка запи�у"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "неврівноважена дужка ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "некоректний кла� �имволів"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr ""
+"�интак�ичну кон�трукцію кла�у �имволів �лід визначати так: [[:space:]], а не "
+"так: [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "незавершена \\-по�лідовні�ть"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "некоректний вмі�т \\{\\}"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "занадто об'ємний формальний вираз"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "неврівноважена дужка ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "не вказано �интак�и�"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "неврівноважена дужка )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "�евідома �и�темна помилка"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: параметр «%s%s» не є однозначним\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: неоднозначний параметр «%s%s»; можливі варіанти:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: невідомий параметр «%s%s»\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: додаванн� аргументів до параметра «%s%s» не передбачено\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: параметр «%s%s» потребує аргументу\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: некоректний параметр — «%c»\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: до параметра �лід додати аргумент — «%c»\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "пам'�ть вичерпано"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "не вдало�� зберегти поточний робочий каталог"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "не вдало�� повернути�ь до початкового робочого каталогу"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr ""
+"не вдало�� в�тановити тек�товий або двійковий режим дл� де�криптора файла"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "«"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "»"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "У�піх"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "�е знайдено"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Помилка у формальному виразі"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "�екоректний �имвол порівн�нн�"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "�екоректна назва кла�у �имволів"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Кінцевий �имвол похилої ри�ки"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "�екоректне зворотне по�иланн�"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "�езавершена по�лідовні�ть [, [^, [:, [. або [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "�еврівноважена по�лідовні�ть ( або \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "�еврівноважена по�лідовні�ть \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "�екоректний вмі�т \\{\\}"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "�екоректне завершенн� діапазону"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Пам'�ть вичерпано"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Помилка у попередньому формальному виразі"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "�еочікуване завершенн� формального виразу"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Занадто об'ємний формальний вираз"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "�еврівноважена по�лідовні�ть ) або \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "�е ви�влено попереднього формального виразу"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "Пакуванн� — %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "Пакуванн� — %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Умови ліцензуванн� викладено у GPLv3+: GNU GPL вер�ії 3 або новішій, <%s>\n"
+"Це вільне програмне забезпеченн�: ви можете вільно змінювати і поширювати "
+"його.\n"
+"Вам не надаєть�� ЖОД�ИХ Г�Р��ТІЙ, окрім гарантій передбачених "
+"законодав�твом.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "�втор — %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "�втори: %s і %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "�втори: %s, %s і %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"�втори: %s, %s, %s\n"
+"Ñ– %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"�втори: %s, %s, %s,\n"
+"%s Ñ– %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"�втори: %s, %s, %s,\n"
+"%s, %s Ñ– %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"�втори: %s, %s, %s,\n"
+"%s, %s, %s Ñ– %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"�втори: %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"Ñ– %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"�втори: %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s Ñ– %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"�втори: %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s та інші.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "Повідомл�йте про вади на адре�у: %s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "Про вади у %s повідомл�йте на адре�у %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Домашн� �торінка %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr ""
+"Загальна довідкова інформаці� щодо викори�танн� програмного забезпеченн� "
+"GNU: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(�тандартне джерело вхідних даних)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "помилковий аргумент довжини контек�ту"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "вхідні дані занадто довгі дл� обліку"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s: двійковий файл мі�тить збіжні�ть"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s: попередженн�: зацикленн� рекур�ивного проходу каталогів"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s: файл вхідних даних є також файлом вихідних даних"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Викори�танн�: %s [П�Р�МЕТР]... Ш�БЛО�И [Ф�ЙЛ]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Віддайте команду «%s --help», щоб дізнати�� більше.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Шукати Ш�БЛО�И у кожному Ф�ЙЛі.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Приклад: %s -i 'hello world' menu.h main.c\n"
+"Запи� Ш�БЛО�И може мі�тити декілька шаблонів, �кі відокремлено �имволами "
+"нового р�дка.\n"
+"\n"
+"Вибір за взірцем та інтерпретаці�:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     Ш�БЛО�И є розширеним формальним виразом\n"
+"  -F, --fixed-strings       Ш�БЛО�И є набором р�дків\n"
+"  -G, --basic-regexp        Ш�БЛО�И є звичайними формальними виразами\n"
+"  -P, --perl-regexp         Ш�БЛО�И є формальними виразами Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=Ш�БЛО�И      викори�товувати Ш�БЛО�И дл� в�тановленн� "
+"відповідно�ті\n"
+"  -f, --file=Ф�ЙЛ           вз�ти Ш�БЛО�И із Ф�ЙЛа\n"
+"  -i, --ignore-case         ігнорувати регі�тр літер у шаблонах і даних\n"
+"      --no-ignore-case      не ігнорувати регі�тр літер (типова поведінка)\n"
+"  -w, --word-regexp         шукати лише цілі �лова\n"
+"  -x, --line-regexp         шукати лише цілі р�дки\n"
+"  -z, --null-data           р�дки даних закінчують�� байтом \"0\", а не "
+"�имволом\n"
+"                            кінц� р�дка (\\n)\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Інше:\n"
+"  -s, --no-messages         придушити повідомленн� про помилки\n"
+"  -v, --invert-match        вибирати р�дки без збіжно�тей\n"
+"  -V, --version             показати дані щодо вер�ії і завершити роботу\n"
+"      --help                показати ці довідкові дані і завершити роботу\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"Керуванн� виведенн�м даних:\n"
+"  -m, --max-count=ЧИСЛО     зупинити�� пі�л� ви�вленн� кілько�ті р�дків, що "
+"дорівнює ЧИСЛУ\n"
+"  -b, --byte-offset         показувати позиції у байтах разом з виведеними "
+"р�дками\n"
+"  -n, --line-number         показувати номери р�дків разом з виведеними "
+"р�дками\n"
+"      --line-buffered       �порожн�ти буфер пі�л� виведенн� кожного р�дка\n"
+"  -H, --with-filename       показувати дл� кожного р�дка назву файла\n"
+"  -h, --no-filename         не показувати назв файлів у виведених даних\n"
+"      --label=МІТК�         показувати МІТКУ замі�ть назви файла дл� "
+"�тандартного джерела вхідних даних\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       показувати лише непорожні ча�тини відповідних "
+"р�дків\n"
+"  -q, --quiet, --silent     придушити виведенн� в�іх звичайних даних\n"
+"      --binary-files=ТИП    припу�кати, що в�і бінарні файли належать до "
+"ТИПу;\n"
+"                            ТИПом може бути `binary', `text' або `without-"
+"match'\n"
+"  -a, --text                те �аме, що і --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        те �аме, що і --binary-files=without-match\n"
+"  -d, --directories=ДІЯ     визначити �по�іб обробки каталогів;\n"
+"                            ДІЄЮ може бути `read' (прочитати), `recurse'\n"
+"                            (обробити рекур�ивно) або `skip' (пропу�тити)\n"
+"  -D, --devices=ДІЯ         визначити �по�іб обробки файлів при�троїв, FIFO\n"
+"                            та �окетів;\n"
+"                            ДІЄЮ може бути `read' (прочитати) або `skip'\n"
+"                            (пропу�тити)\n"
+"  -r, --recursive           те �аме, що і --directories=recurse\n"
+"  -R, --dereference-recursive  подібне, але з переходом за в�іма "
+"�имволічними\n"
+"                            по�иланн�ми\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=ВЗІРЕЦЬ     шукати лише у файлах, назви �ких відповідають "
+"ВЗІРЦЮ\n"
+"      --exclude=ВЗІРЕЦЬ     не шукати у файлах, назви �ких відповідають "
+"ВЗІРЦЮ\n"
+"      --exclude-from=Ф�ЙЛ   пропу�тити файли, назви �ких відповідають будь-"
+"�кому з шаблонів з Ф�ЙЛа\n"
+"      --exclude-dir=ВЗІРЕЦЬ пропу�тити каталоги, назви �ких відповідають "
+"ВЗІРЦЮ.\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match показати назви лише тих файлів, у �ких немає "
+"вибраних р�дків\n"
+"  -l, --files-with-matches  показати назви лише тих файлів, у �ких є вибрані "
+"р�дки\n"
+"  -c, --count               показувати лише вказану кількі�ть вибраних "
+"р�дків на Ф�ЙЛ\n"
+"  -T, --initial-tab         вирівнювати результати табул�цією (�кщо "
+"потрібно)\n"
+"  -Z, --null                виве�ти байти 0 пі�л� назви Ф�ЙЛа\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"Керуванн� контек�том:\n"
+"  -B, --before-context=ЧИСЛО показати ЧИСЛО р�дків перед р�дком з "
+"відповідником\n"
+"  -A, --after-context=ЧИСЛО  показати ЧИСЛО р�дків пі�л� р�дка з "
+"відповідником\n"
+"  -C, --context=ЧИСЛО        показати ЧИСЛО р�дків контек�ту виведених "
+"даних\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -ЧИСЛО                     те �аме, що і --context=ЧИСЛО\n"
+"      --group-separator=РОЗД виве�ти �имвол РОЗД у р�дку між відповідниками "
+"з контек�том\n"
+"      --no-group-separator   не виводити роздільник дл� відповідників із "
+"контек�том\n"
+"      --color[=ДЕ],\n"
+"      --colour[=ДЕ]          викори�товувати маркери дл� позначенн�\n"
+"                             р�дків з відповідниками\n"
+"                             ДЕ може приймати значенн� \"always\", \"never\" "
+"чи \"auto\".\n"
+"  -U, --binary               не вилучати �имволи CR на кінці р�дка (MSDOS/"
+"Windows)\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Якщо Ф�ЙЛом є «-», читати дані зі �тандартного джерела вхідних\n"
+"даних. Якщо не вказано Ф�ЙЛ, читати «.», �кщо режим рекур�ивний, і\n"
+"«-», �кщо ні. Якщо вказано менше ніж два Ф�ЙЛи, буде викори�тано -h.\n"
+"Код завершенн� 0 — �кщо було ви�влено відповідник р�дка,\n"
+"1 — коли їх нема, 2 — �кщо �тала�� помилка і не було викори�тано\n"
+"параметр -q.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "задані умови відповідно�ті є �уперечливими"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr ""
+"Підтримки в�тановленн� відповідно�ті за правилами Perl у збірках із --"
+"disable-perl-regexp не передбачено"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "некоректний вираз порівн�нн� %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "невідомий �по�іб обробки дл� при�троїв"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "попередженн�: --unix-byte-offsets (-u) є за�тарілим параметром"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "помилкова мак�имальна кількі�ть"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "невідомий тип двійкових файлів"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"�вторами програми є Mike Haertel та інші програмі�ти; див.\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "не вдало�� отримати обла�ть пам’�ті під �тек JIT PCRE"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "у -P передбачено підтримку лише однобайтових локалей та UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "аргументом параметра -P може бути лише один шаблон"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "внутрішн� помилка (такої помилки не повинно було �тати��)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "перевищено обмеженн� на довжину р�дка PCRE"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s: пам'�ть вичерпано"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s: вичерпано �тек JIT PCRE"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s: перевищено обмеженн� на зворотне �теженн� у PCRE"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s: перевищено обмеженн� на рекур�ію у PCRE"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s: внутрішн� помилка PCRE: %d"
diff --git a/src/grep/po/vi.gmo b/src/grep/po/vi.gmo
new file mode 100644
index 0000000..efc8028
--- /dev/null
+++ b/src/grep/po/vi.gmo
diff --git a/src/grep/po/vi.po b/src/grep/po/vi.po
new file mode 100644
index 0000000..6af0e1e
--- /dev/null
+++ b/src/grep/po/vi.po
@@ -0,0 +1,864 @@
+# Vietnamese Translation for Grep.
+# Bản dịch tiếng Việt dành cho Grep.
+# Copyright © 2016 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+# Clytie Siddall <clytie@riverland.net.au>, 2005-2010.
+# Trần Ng�c Quân <vnwildman@gmail.com>, 2012-2014, 2015, 2016, 2017, 2018.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.3.42\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2020-01-04 15:02+0700\n"
+"Last-Translator: Trần Ng�c Quân <vnwildman@gmail.com>\n"
+"Language-Team: Vietnamese <translation-team-vi@lists.sourceforge.net>\n"
+"Language: vi\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+"X-Generator: Poedit 2.2.4\n"
+"X-Poedit-SourceCharset: UTF-8\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "đối số %s không hợp lệ đối với %s"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "đối số %s không rõ ràng đối với %s"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "Các đối số hợp lệ là:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "lỗi chương trình"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "tràn ngăn xếp"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "lá»—i ghi"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "thiếu dấu ngoặc vuông mở ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "sai lớp ký tự"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "cú pháp lớp ký tự là [[:space:]], không phải [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "chưa kết thúc thoát chuỗi \\"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "nội dung của \\{\\} không hợp lệ"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "biểu thức chính quy quá lớn"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "thiếu dấu ngoặc đơn mở ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "chưa đưa ra cú pháp"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "thiếu dấu ngoặc đơn đóng )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "Lỗi hệ thống không rõ"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s: tùy ch�n “%s%s� chưa rõ ràng\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s: tùy ch�n “%s%s� chưa rõ ràng; khả năng là:"
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s: không nhận ra tùy ch�n “%s%s�\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s: tùy ch�n “%s%s� không không cho phép một đối số\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s: tùy ch�n “%s%s� cần một đối số\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: tùy ch�n không hợp lệ -- “%c�\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: tùy ch�n yêu cầu một đối số -- “%c�\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "hết bộ nhớ"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "không thể ghi nhớ được thư mục làm việc hiện th�i"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "gặp lỗi khi quay trở v� thư mục làm việc khởi đầu"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "gặp lỗi khi đặt chế độ văn bản/nhị phân cho bộ mô tả tập tin"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "“"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "�"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "Thành công"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "Không tìm thấy"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "Biểu thức chính quy không hợp lệ"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "Ký tự đối chiếu không hợp lệ"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "Tên lớp ký tự không hợp lệ"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "Dấu gạch ngược theo sau"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "Tham chiếu ngược không hợp lệ"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "Có ký tự [, [^, [:, [., hay [= lẻ cặp"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "Có ký tự “(� hay “\\(� lẻ cặp"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "Có ký tự “\\{� lẻ cặp"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "Nội dung của \\{\\} không hợp lệ"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "Sai kết thúc phạm vi"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "Hết bộ nhớ"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "Biểu thức chính quy có trước không hợp lệ"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "Biểu thức chính quy kết thức quá sớm"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "Biểu thức chính quy quá lớn"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "Có ký tự “)� hay “\\)� lẻ cặp"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "Không có biểu thức chính quy nằm trước"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "�óng gói bởi %s (%s)\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "�óng gói bởi %s\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"Giấy phép GPL pb3+ : Giấy phép Công cộng GNU phiên bản 3 hay sau <%s>.\n"
+"�ây là phần m�m tự do: bạn có quy�n sửa đổi và phát hành lại nó.\n"
+"KHÔNG CÓ BẢO HÀNH GÌ CẢ, với đi�u kiện được pháp luật cho phép.\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "Viết bởi %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "Viết bởi %s và %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "Viết bởi %s, %s và %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Viết bởi %s, %s, %s\n"
+"và %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Viết bởi %s, %s, %s,\n"
+"%s và %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"Viết bởi %s, %s, %s,\n"
+"%s, %s và %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"Viết bởi %s, %s, %s,\n"
+"%s, %s, %s và %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"Viết bởi %s, %s, %s,\n"
+"%s, %s, %s, %s\n"
+"và %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"Viết bởi %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s và %s.\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"Viết bởi %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s và một số ngư�i khác.\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr ""
+"Hãy thông báo lỗi cho: %s\n"
+"Hãy thông báo lỗi dịch cho <http://translationproject.org/team/vi.html>.\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr ""
+"Hãy thông các báo lỗi %s cho: %s\n"
+"Hãy thông báo lỗi dịch cho <http://translationproject.org/team/vi.html>.\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "Trang chủ của %s: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "Trợ giúp chung v� cách sử dụng phần m�m GNU: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(đầu vào tiêu chuẩn)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "đối số chi�u dài ngữ cảnh không hợp lệ"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "dữ liệu đầu vào quá lớn nên không thể đếm được"
+
+#: src/grep.c:1641
+#, fuzzy, c-format
+msgid "%s: binary file matches"
+msgstr "Tập tin nhị phân “%s� khớp mẫu tìm kiếm\n"
+
+#: src/grep.c:1679
+#, fuzzy, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "vòng lặp thư mục đệ quy"
+
+#: src/grep.c:1899
+#, fuzzy, c-format
+msgid "%s: input file is also the output"
+msgstr "tập tin đầu vào “%s� cũng là kết xuất"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "Cách dùng: %s [TÙY_CHỌN]… MẪU [TẬP_TIN]…\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "Hãy chạy lệnh “%s --help� để biết thêm thông tin.\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "Tìm kiếm MẪU trong từng TẬP_TIN.\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"Ví dụ: %s -i \"chào thế giới\" menu.h main.c\n"
+"MẪU có thể chứa nhi�u mẫu ngăn cách nhau bằng ký tự dòng mới.\n"
+"\n"
+"Ch�n và biên dịch mẫu:\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     MẪU là các biểu thức chính quy mở rộng\n"
+"  -F, --fixed-strings       MẪU là các chuỗi\n"
+"  -G, --basic-regexp        MẪU là các biểu thức chính quy cơ bản\n"
+"  -P, --perl-regexp         MẪU là các biểu thức chính quy Perl\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=MẪU          dùng MẪU để so khớp\n"
+"  -f, --file=TẬP_TIN        lấy MẪU từ TẬP_TIN\n"
+"  -i, --ignore-case         không phân biệt HOA/thư�ng trong mẫu và dữ liệu\n"
+"      --no-ignore-case      phân biệt HOA/thư�ng (mặc định)\n"
+"  -w, --word-regexp         chỉ khớp toàn bộ từ\n"
+"  -x, --line-regexp         chỉ khớp toàn bộ dòng\n"
+"  -z, --null-data           một dòng dữ liệu kết thúc bằng byte 0,\n"
+"                            không phải ký tự dòng mới\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"Hỗn tạp:\n"
+"  -s, --no-messages         chặn các thông báo lỗi\n"
+"  -v, --invert-match        ch�n các dòng không khớp\n"
+"  -V, --version             in ra thông tin phiên bản rồi thoát\n"
+"      --help                hiển thị trợ giúp này rồi thoát\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"�i�u khiển kết xuất:\n"
+"  -m, --max-count=S�        dừng sau khi khớp được S� lần\n"
+"  -b, --byte-offset         in ra vị trí tương đối tính theo byte\n"
+"                              cùng với dòng kết xuất\n"
+"  -n, --line-number         in ra số thứ tự dòng cùng với dòng kết xuất\n"
+"      --line-buffered       xóa sạch kết xuất trên từng dòng\n"
+"  -H, --with-filename       in ra tên tập tin cho từng dòng đầu ra\n"
+"  -h, --no-filename         chặn ti�n tố tên tập tin khi xuất\n"
+"      --label=NHÃN          sử dụng NHÃN này làm ti�n tố cho tập tin\n"
+"                              cho đầu ra tiêu chuẩn\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       chỉ hiển thị phần dòng không rỗng khớp với MẪU\n"
+"  -q, --quiet, --silent     chặn m�i kết xuất bình thư�ng\n"
+"      --binary-files=KIỂU   coi rằng tập tin nhị phân có KIỂU:\n"
+"                                  * “binary�         nhị phân\n"
+"                                  * “text�           dạng chữ\n"
+"                                  * “without-match�  không khớp\n"
+"  -a, --text                giống với tùy ch�n “--binary-files=text�\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        giống với “--binary-files=without-match�\n"
+"  -d, --directories=HÀNH_VI cách quản lý các thư mục. HÀNH_VI là:\n"
+"                                  * “read�     đ�c\n"
+"                                  * “recurse�  đệ quy\n"
+"                                  * “skip�     b� qua\n"
+"  -D, --devices=HÀNH_VI     cách quản lý các thiết bị, FIFO và socket;\n"
+"                            HÀNH_VI:\n"
+"                                  * “read�     đ�c\n"
+"                                  * “skip�     b� qua\n"
+"  -r, --recursive           giống với tùy ch�n “--directories=recurse�\n"
+"  -R, --dereference-recursive  cũng vậy nhưng cho phép cả các liên kết m�m\n"
+
+#: src/grep.c:2023
+#, fuzzy, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB        chỉ tìm kiếm những tập tin khớp với GLOB (mẫu "
+"tập tin)\n"
+"      --exclude=GLOB        b� qua những tập tin và thư mục khớp với GLOB\n"
+"      --exclude-from=TỆP    b� qua những tập tin khớp với bất cứ mẫu tập\n"
+"                             tin trong tập tin này\n"
+"      --exclude-dir=GLOB    thư mục nào khớp với mẫu này thì bị b� qua\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  chỉ in ra tên của các TẬP TIN không khớp mẫu\n"
+"  -l, --files-with-matches  chỉ in ra tên của các TẬP TIN khớp mẫu\n"
+"  -c, --count               chỉ in ra số lượng dòng khớp trong mỗi TẬP TIN\n"
+"  -T, --initial-tab         sắp hàng cột tab (nếu cần)\n"
+"  -Z, --null                in ra byte 0 (null) đằng sau tên TẬP TIN\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"�i�u khiển ngữ cảnh:\n"
+"  -B, --before-context=S�   in ra S� dòng ngữ cảnh đi trước\n"
+"  -A, --after-context=S�    in ra S� dòng ngữ cảnh đi sau\n"
+"  -C, --context=S�          in ra S� dòng ngữ cảnh kết xuất\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      giống với “--context=S��\n"
+"      --color[=KHI],\n"
+"      --colour[=KHI]        đánh dấu để tô sáng các chuỗi khớp; KHI là:\n"
+"                                 * “always� luôn luôn\n"
+"                                 * “never�  không bao gi�\n"
+"                                 * “auto�   tự động\n"
+"  -U, --binary              đừng gỡ b� các ký tự CR ở kết thúc dòng (EOL)\n"
+"                            (MSDOS/Windows)\n"
+"\n"
+
+#: src/grep.c:2052
+#, fuzzy, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"Khi TẬP_TIN là “-�, thì đ�c từ đầu vào tiêu chuẩn. Không có TẬP_TIN, đ�c “.� "
+"nếu\n"
+"đệ quy, “-� nếu không phải vậy. Nếu ít hơn hai TẬP_TIN thì coi là “-h�.\n"
+"Trạng thái thoát là 0 nếu có dòng (hay tập tin nếu -L) nào khớp mẫu, không "
+"thì bằng 1;\n"
+"nếu có lỗi phát sinh và “-q� không được đưa ra thì trạng thái thoát là 2.\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "đã ghi rõ dữ liệu khớp mà xung đột"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr "Không hỗ trợ khớp mẫu perl khi biên dịch với --disable-perl-regexp"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "sai mẫu so khớp %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "không rõ phương thức thiết bị"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "số lượng tối đa không hợp lệ"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "không rõ kiểu tập tin nhị phân (binary-files)"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"�ược viết bởi Mike Haertel và nhi�u ngư�i khác, xem tại\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "gặp lỗi khi cấp phát bộ nhớ cho stack (ngăn xếp) PCRE JIT"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P chỉ hỗ trợ mi�n địa phương unibyte và UTF-8"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "tùy ch�n “-P� chỉ hỗ trợ một mẫu đơn lẻ"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "lỗi nội bộ (không nên xảy ra như thế)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "đã vượt quá giới hạn chi�u dài dòng của PCRE"
+
+#: src/pcresearch.c:306
+#, fuzzy, c-format
+msgid "%s: memory exhausted"
+msgstr "hết bộ nhớ"
+
+#: src/pcresearch.c:310
+#, fuzzy, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "ngăn xếp “PCRE JIT� đã hết"
+
+#: src/pcresearch.c:315
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "đã vượt quá giới hạn tìm ngược của PCRE"
+
+#: src/pcresearch.c:319
+#, fuzzy, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "đã vượt quá giới hạn tìm ngược của PCRE"
+
+#: src/pcresearch.c:327
+#, fuzzy, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "lá»—i ná»™i bá»™ PCRE: %d"
+
+#, c-format
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr ""
+#~ "cảnh báo: GREP_OPTIONS đã lỗi th�i; vui lòng dòng một bí danh hoặc văn "
+#~ "lệnh"
+
+#, c-format
+#~ msgid "warning: %s: %s"
+#~ msgstr "cảnh báo: %s: %s"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "Trang chủ %s: <https://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "đối số %s%s không hợp lệ “%s�"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "hậu tố không hợp lệ trong %s%s đối số “%s�"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s đối số “%s� quá lớn"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "lá»—i ná»™i bá»™"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: tùy ch�n “--%s� không cho phép có đối số\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: không nhận ra tùy ch�n “--%s�\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: tùy ch�n “-W %s� chưa rõ ràng\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: tùy ch�n “-W %s� không cho phép đối số\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: tùy ch�n “-W %s� yêu cầu một đối số\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "lseek gặp lỗi"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "MẪU, theo mặc định, là một biểu thức chính quy cơ bản (BRE).\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "“egrep� nên là “grep -E�, “fgrep� nên là “grep -F�.\n"
+#~ "Không tán thành g�i trực tiếp “egrep� cũng như “fgrep�.\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "không thoát ^ hay $ không được hỗ trợ với -Pz"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "Trang chủ của GNU Grep: <%s>\n"
+
+#~ msgid "invalid UTF-8 byte sequence in input"
+#~ msgstr "chuỗi byte UTF-8 không hợp lệ ở đầu vào"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "MẪU là một biểu thức chính quy mở rộng (ERE).\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr "Không tán thành việc g�i như “egrep� nên thay thế bằng “grep -E�.\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr ""
+#~ "MẪU là một tập hợp các chuỗi cố định phân cách bằng ký tự dòng mới.\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr "Không tán thành việc g�i như “fgrep� nên thay thế bằng “grep -F�.\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s chỉ có khả năng sử dụng cú pháp mẫu %s"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "tùy ch�n --mmap không còn được thực thi kể từ năm 2010"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "chưa kết thúc sự đếm lặp lại"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "sự đếm lặp lại dạng sai"
+
+#~ msgid "writing output"
+#~ msgstr "đang ghi kết xuất"
+
+#~ msgid ""
+#~ "in GREP_COLORS='%s', the `%s' capacity needs a value ('=...'); skipped"
+#~ msgstr ""
+#~ "trong chuỗi “GREP_COLORS=“%s�, khả năng “%s� cần giá trị (“=…�); nên b� "
+#~ "qua"
+
+#~ msgid ""
+#~ "in GREP_COLORS='%s', the `%s' capacity is boolean and cannot take a value "
+#~ "('=%s'); skipped"
+#~ msgstr ""
+#~ "trong chuỗi “GREP_COLORS=“%s�, khả năng “%s� là luận lý thì không chấp "
+#~ "nhận được giá trị (“=%s�); nên b� qua"
+
+#~ msgid "in GREP_COLORS='%s', the `%s' capacity %s"
+#~ msgstr "trong GREP_COLORS=“%s�, khả năng “%s� %s"
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS='%s' at remaining substring `"
+#~ "%s'"
+#~ msgstr ""
+#~ "đã dừng xử lý chuỗi GREP_COLORS=“%s� dạng sai ở chuỗi con còn lại “%s�"
diff --git a/src/grep/po/zh_CN.gmo b/src/grep/po/zh_CN.gmo
new file mode 100644
index 0000000..946eb07
--- /dev/null
+++ b/src/grep/po/zh_CN.gmo
diff --git a/src/grep/po/zh_CN.po b/src/grep/po/zh_CN.po
new file mode 100644
index 0000000..b9559ee
--- /dev/null
+++ b/src/grep/po/zh_CN.po
@@ -0,0 +1,912 @@
+# Simplified Chinese(zh_CN) messages for grep.
+# This file is distributed under the same license as the grep package.
+# Copyright (C) 2008 Free Software Foundation, Inc.
+# Ji ZhengYu <zhengyuji@gmail.com>, 2016.
+# Boyuan Yang <073plan@gmail.com>, 2018, 2019, 2020.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.5.16\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2020-11-04 09:09-0500\n"
+"Last-Translator: Boyuan Yang <073plan@gmail.com>\n"
+"Language-Team: Chinese (simplified) <i18n-zh@googlegroups.com>\n"
+"Language: zh_CN\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"X-Generator: Poedit 2.4.1\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "%2$s 的�数 %1$s 无效"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "%2$s 的�数 %1$s 有歧义"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "有效�数是:"
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "程�错误"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "栈溢出"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "写错误"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "有未匹�的 ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "无效的字符类�"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "字符类的语法是 [[:space:]],而� [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "未�好 \\ 转义"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "\\{\\}中内容无效"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "正则表达�太长"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "有未匹�的 ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "未指定语法"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "有未匹�的 )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "未知的系统错误"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s：选项“%s%s�有歧义\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s：选项“%s%s�有歧义；�能原因："
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s：无法识别的选项“%s%s�\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s：选项“%s%s���许带�数\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s：选项“%s%s�需�一个�数\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s：无效选项 -- “%c�\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s：选项需�一个�数 -- “%c�\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "内存耗尽"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "无法记录当�工作目录"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "无法返回起始工作目录"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "设置文件�述符文本/二进制模�失败"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "‘"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "’"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "�功"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "无匹�"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "无效的正则表达�"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "无效的冲�字符"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "无效的字符类�"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "多余的�斜�"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "无效的回退索引"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "[, [^, [:, [.或[= �匹�"
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "( 或 \\( �匹�"
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "\\{ �匹�"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "\\{\\} 中的内容无效"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "无效的结�地�"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "内存耗尽"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "之�的正则表达�无效"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "正则表达��正常结�"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "正则表达�太大"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr ") 或 \\) �匹�"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "没有之�的正则表达�"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "由 %s (%s) 打包\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "由 %s 打包\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "©"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"GPLv3+ 许��: GNU 通用公共许��第三版或更高版本 <%s>。\n"
+"这是自由软件: 您�自由更改并�新分�它。\n"
+"在法律所�许的范围内，�附带任何担��款。\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "作者 %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "作者 %s 和 %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "作者 %s, %s � %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"作者 %s, %s, %s,\n"
+"� %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"作者 %s, %s, %s,\n"
+"%s, � %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"作者 %s, %s, %s,\n"
+"%s, %s, � %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"作者 %s, %s, %s,\n"
+"%s, %s, %s, � %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"作者 %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"� %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"作者 %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, � %s。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"作者 %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, 以�其他人。\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "请将错误报告给：%s。翻译问题请报告至 <i18n-zh@googlegroups.com>。\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "请将 %s 错误报告给: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "%s 主页: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "GNU 软件的通用帮助: <%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "（标准输入）"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "无效的文本长度�数"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "输入太多无法计数"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s：匹�到二进制文件"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s：警告：嵌套目录循环"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s：输入文件�时也作为输出"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "用法: %s [选项]... 模� [文件]...\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "�试使用 '%s --help' �获得更多信�。\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "在�个<文件>中查找给定<模�>。\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"例如：%s -i 'hello world' menu.h main.c\n"
+"<模�>�以包括多个模�字符串，使用�行符进行分隔。\n"
+"\n"
+"模�选择与解释：\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     <模�> 是扩展正则表达�\n"
+"  -F, --fixed-strings       <模�> 是字符串\n"
+"  -G, --basic-regexp        <模�> 是基本正则表达�\n"
+"  -P, --perl-regexp         <模�> 是 Perl 正则表达�\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=<模�>       用指定的<模�>字符串�进行匹��作\n"
+"  -f, --file=<文件>         从给定<文件>中�得<模�>\n"
+"  -i, --ignore-case         在模�和数�中忽略大�写\n"
+"      --no-ignore-case      ��忽略大�写（默认）\n"
+"  -w, --word-regexp         强制<模�>仅完全匹�字�\n"
+"  -x, --line-regexp         强制<模�>仅完全匹�整行\n"
+"  -z, --null-data           数�行以一个 0 字节结�，而��行符\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"�项:\n"
+"  -s, --no-messages         �显示错误信�\n"
+"  -v, --invert-match        选中�匹�的行\n"
+"  -V, --version             显示版本信�并退出\n"
+"      --help                显示此帮助并退出\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"输出控制：\n"
+"  -m, --max-count=<次数>    得到给定<次数>次匹���止\n"
+"  -b, --byte-offset         输出的�时打�字节�移\n"
+"  -n, --line-number         输出的�时打�行�\n"
+"      --line-buffered       �行输出�刷新输出缓冲区\n"
+"  -H, --with-filename       为输出行打�文件�\n"
+"  -h, --no-filename         输出时�显示文件��缀\n"
+"      --label=<标签>        将给定<标签>作为标准输入文件��缀\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       �显示行中�空匹�部分\n"
+"  -q, --quiet, --silent     �显示所有常规输出\n"
+"      --binary-files=TYPE   设定二进制文件的 TYPE（类型）；\n"
+"                            TYPE �以是 'binary'�'text' 或 'without-match'\n"
+"  -a, --text                等�于 --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        等�于 --binary-files=without-match\n"
+"  -d, --directories=ACTION  读�目录的方�；\n"
+"                            ACTION �以是`read', `recurse',或`skip'\n"
+"  -D, --devices=ACTION      读�设备�先入先出队列�套接字的方�；\n"
+"                            ACTION �以是`read'或`skip'\n"
+"  -r, --recursive           等�于--directories=recurse\n"
+"  -R, --dereference-recursive       �上，但�历所有符�链接\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB        �查找匹� GLOB（文件模�）的文件\n"
+"      --exclude=GLOB        跳过匹� GLOB 的文件\n"
+"      --exclude-from=FILE   跳过所有匹�给定文件内容中任�模�的文件\n"
+"      --exclude-dir=GLOB    跳过所有匹� GLOB 的目录\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  �打�没有匹�上的<文件>的�称\n"
+"  -l, --files-with-matches  �打�有匹�的<文件>的�称\n"
+"  -c, --count               �打��个<文件>中的匹�行数目\n"
+"  -T, --initial-tab         行首制表符对�（如有必�）\n"
+"  -Z, --null                在<文件>�最�打�空字符\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"文件控制:\n"
+"  -B, --before-context=NUM  打�文本�其��NUM 行\n"
+"  -A, --after-context=NUM   打�文本�其��NUM 行\n"
+"  -C, --context=NUM         打�NUM 行输出文本\n"
+
+#: src/grep.c:2043
+#, fuzzy, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      等�于 --context=NUM\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       使用标记高亮匹�字串；\n"
+"                            WHEN �以是“always��“never�或“auto�\n"
+"  -U, --binary              ��清除行尾的 CR 字符（MSDOS/Windows）\n"
+"\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"若给定文件为“-�，则从读�标准输入。  若无文件�数，则除�处于\n"
+"递归工作模�视为从“.�读�之外，一律视为从“-�读�。如果�供了少于\n"
+"两个文件�数，则默认�用 -h 选项。如果有任�行被匹�则退出状�为 0，\n"
+"�则为 1；如果有错误产生且未指定 -q �数，则退出状�为 2。\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "指定了互相冲�的比较程�"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr "当�使用了 --disable-perl-regexp 的构建无法支� Perl 匹�模�"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "无效匹� %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "未知的设备处�方�"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr ""
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "无效的最大计数"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "未知的二进制文件类型"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"由 Mike Haerhtel 等人编写；作者信�请��\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>。"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "为 PCRE JIT 栈分�内存时出错"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P 仅支��字节� UTF-8 语言环境"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "-P 选项仅支��一匹�字�"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "内部错误（永远�应该�生）"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "超过 PCRE 的行长度�制"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s：内存耗尽"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s：PCRE JIT 栈已�用尽"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s：超过 PCRE 的回溯�制"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s：超过 PCRE 的递归�制"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s：PCRE 内部错误：%d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr "警告: GREP_OPTIONS 已被废弃；请使用别�或脚本"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "警告: %s: %s"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "%s 主页: <https://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "无效的 %s%s �数'%s'"
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "%s%s �数'%s' 的�缀无效"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s �数“%s�过大"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "内部错误"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: 选项'--%s' ��许带�数\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: 未知选项'--%s' \n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: 选项'-W %s' 有歧义\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: 选项'-W %s' ��许带�数\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: 选项'-W %s' 必须带�数\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "lseek 失败"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "默认的 PATTERN 是一个基本正则表达�(缩写为 BRE)。\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "'egrep' �'grep -E'。'fgrep' �'grep -F'。\n"
+#~ "直接调用'egrep' 或是'fgrep' �已被废弃。\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "-Pz �支�未�转义的字符^ 或$"
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "PATTERN 是一个�扩展的正则表达�(缩写为 ERE)。\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr "‘egrep’已��使用了；请用‘grep -E’代替。\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "PATTERN 是一组由断行符分隔的定长字符串。\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr "‘fgrep’已��使用了；请用 ‘grep -F’代替。\n"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "GNU Grep 主页: <%s>\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s �能使用 %s 匹�语法"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "--mmap 选项从2010 年起已��是�作符了"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "未定义��次数"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "��次数定义地�完整"
+
+#~ msgid "writing output"
+#~ msgstr "正在写输出"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity needs a value (\"=...\"); "
+#~ "skipped"
+#~ msgstr ""
+#~ "在 GREP_COLORS=\"%s\"中， \"%s\" 需�指定一个值(\"=...\")；已忽略此�数。"
+
+#~ msgid ""
+#~ "in GREP_COLORS=\"%s\", the \"%s\" capacity is boolean and cannot take a "
+#~ "value (\"=%s\"); skipped"
+#~ msgstr ""
+#~ "在 GREP_COLORS=\"%s\"中，\"%s\" �的是一个 boolean(布尔值) �是一个数值"
+#~ "(\"=%s\")；已忽略此�数。"
+
+#~ msgid "in GREP_COLORS=\"%s\", the \"%s\" capacity %s"
+#~ msgstr "在 GREP_COLORS=\"%s\"中，\"%s\" 是 %s。"
+
+#~ msgid ""
+#~ "stopped processing of ill-formed GREP_COLORS=\"%s\" at remaining "
+#~ "substring \"%s\""
+#~ msgstr "在余下的�串 \"%2$s\" 中�止处�格�有误的 GREP_COLORS=\"%1$s\"。"
+
+#~ msgid "unknown directories method"
+#~ msgstr "未知的目录处�方法"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE;\n"
+#~ "                            TYPE is `binary', `text', or `without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories;\n"
+#~ "                            ACTION is `read', `recurse', or `skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+#~ "                            ACTION is `read' or `skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=FILE_PATTERN  search only files that match FILE_PATTERN\n"
+#~ "      --exclude=FILE_PATTERN  skip files and directories matching "
+#~ "FILE_PATTERN\n"
+#~ "      --exclude-from=FILE   skip files matching any file pattern from "
+#~ "FILE\n"
+#~ "      --exclude-dir=PATTERN directories that match PATTERN will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match print only names of FILEs containing no "
+#~ "match\n"
+#~ "  -l, --files-with-matches  print only names of FILEs containing matches\n"
+#~ "  -c, --count               print only a count of matching lines per "
+#~ "FILE\n"
+#~ "  -T, --initial-tab         make tabs line up (if needed)\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "输出控制:\n"
+#~ "  -m, --max-count=NUM       NUM 次匹���止\n"
+#~ "  -b, --byte-offset         显示输出行的字节�移\n"
+#~ "  -n, --line-number         显示输出行的行�\n"
+#~ "      --line-buffered       �行都清空输出\n"
+#~ "  -H, --with-filename       为�个匹�打�出文件�\n"
+#~ "  -h, --no-filename         输出时�显示文件��的路径�\n"
+#~ "      --label=LABEL         打� LABEL 作为标准输入的文件�\n"
+#~ "  -o, --only-matching       仅显示匹� PATTERN 的那一行\n"
+#~ "  -q, --quiet, --silent     �显示所有普通信�\n"
+#~ "      --binary-files=TYPE   �定二进制文件类型为 TYPE;\n"
+#~ "                            TYPE �以是‘binary’，‘text’或是‘without-"
+#~ "match’\n"
+#~ "  -a, --text                等�于 --binary-files=text\n"
+#~ "  -I                        等�于 --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  如何处�目录�；\n"
+#~ "                            ACTION 是‘read’，‘recurse’或是‘skip’\n"
+#~ "  -D, --devices=ACTION      如何处�设备�，FIFOs(队列) 以� sockets(套接"
+#~ "å­—)\n"
+#~ "                            ACTION 是‘read’或是‘skip’\n"
+#~ "  -R, -r, --recursive       等�于 --directories=recurse\n"
+#~ "      --include=FILE_PATTERN  仅查找匹� FILE_PATTERN 的文件\n"
+#~ "      --exclude=FILE_PATTERN  忽略匹� FILE_PATTERN 的文件和目录\n"
+#~ "      --exclude-from=FILE   忽略任何�自 FILE 的匹�字�\n"
+#~ "      --exclude-dir=PATTERN 忽略匹� PATTERN 的目录。\n"
+#~ "  -L, --files-without-match 仅显示�包�匹�字�的 FILE �称\n"
+#~ "  -l, --files-with-matches  仅显示包�匹�字�的 FILE �称\n"
+#~ "  -c, --count               仅显示�个 FILE 中匹�行的数目\n"
+#~ "  -T, --initial-tab         以 tab 为行首(如果必�的�)\n"
+#~ "  -Z, --null                在 FILE �打� 0 字节\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "-P 和 -z 选项�能组�使用"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s: �法选项 -- %c\n"
+
+#~ msgid "Copyright (C) 2008 Free Software Foundation, Inc.\n"
+#~ msgstr "Copyright (C) 2008 Free Software Foundation, Inc.\n"
diff --git a/src/grep/po/zh_TW.gmo b/src/grep/po/zh_TW.gmo
new file mode 100644
index 0000000..edaf898
--- /dev/null
+++ b/src/grep/po/zh_TW.gmo
diff --git a/src/grep/po/zh_TW.po b/src/grep/po/zh_TW.po
new file mode 100644
index 0000000..4a64d87
--- /dev/null
+++ b/src/grep/po/zh_TW.po
@@ -0,0 +1,918 @@
+# Traditional Chinese Translation of grep.
+# Copyright (C) 2004, 2012, 2013, 2016, 2018, 2021 Free Software Foundation, Inc.
+# This file is distributed under the same license as the grep package.
+#
+# Yuan-Chen Cheng <ycheng@sinica.edu.tw>, 2004.
+# Webber Liao <wpliao@gmail.com>, 2012, 2016.
+# Wei-Lun Chao <bluebat@member.fsf.org>, 2013.
+# pan93412 <pan93412@gmail.com>, 2018, 2019, 2020, 2021.
+msgid ""
+msgstr ""
+"Project-Id-Version: grep 3.6.27\n"
+"Report-Msgid-Bugs-To: bug-grep@gnu.org\n"
+"POT-Creation-Date: 2021-08-14 12:54-0700\n"
+"PO-Revision-Date: 2021-08-10 02:06+0800\n"
+"Last-Translator: Yi-Jyun Pan <pan93412@gmail.com>\n"
+"Language-Team: Chinese (traditional) <zh-l10n@lists.linux.org.tw>\n"
+"Language: zh_TW\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Bugs: Report translation errors to the Language-Team address.\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+"X-Generator: Poedit 3.0\n"
+
+#: lib/argmatch.c:132
+#, c-format
+msgid "invalid argument %s for %s"
+msgstr "%2$s 的引數 %1$s 無效"
+
+#: lib/argmatch.c:133
+#, c-format
+msgid "ambiguous argument %s for %s"
+msgstr "%2$s 的引數 %1$s �明確"
+
+#: lib/argmatch.c:152 lib/argmatch.h:223
+msgid "Valid arguments are:"
+msgstr "有效的引數為："
+
+#: lib/c-stack.c:187
+msgid "program error"
+msgstr "程�錯誤"
+
+#: lib/c-stack.c:188
+msgid "stack overflow"
+msgstr "堆疊超出容�"
+
+#: lib/closeout.c:122 src/grep.c:1336
+msgid "write error"
+msgstr "寫入發生錯誤"
+
+#: lib/dfa.c:896
+msgid "unbalanced ["
+msgstr "��稱的 ["
+
+#: lib/dfa.c:1017
+msgid "invalid character class"
+msgstr "無效的字元類別"
+
+#: lib/dfa.c:1143
+msgid "character class syntax is [[:space:]], not [:space:]"
+msgstr "字元類別的語法為 [[:space:]], � [:space:]"
+
+#: lib/dfa.c:1210
+msgid "unfinished \\ escape"
+msgstr "�完整的 \\ 逸出"
+
+#: lib/dfa.c:1371
+msgid "invalid content of \\{\\}"
+msgstr "\\{\\} 的內容無效"
+
+#: lib/dfa.c:1374
+msgid "regular expression too big"
+msgstr "正�表示��長"
+
+#: lib/dfa.c:1858
+msgid "unbalanced ("
+msgstr "��稱的 ("
+
+#: lib/dfa.c:1975
+msgid "no syntax specified"
+msgstr "沒有指定的語法"
+
+#: lib/dfa.c:1986
+msgid "unbalanced )"
+msgstr "��稱的 )"
+
+#: lib/error.c:195
+msgid "Unknown system error"
+msgstr "未知的系統錯誤"
+
+#: lib/getopt.c:278
+#, c-format
+msgid "%s: option '%s%s' is ambiguous\n"
+msgstr "%s：�項「%s%s��明確\n"
+
+#: lib/getopt.c:284
+#, c-format
+msgid "%s: option '%s%s' is ambiguous; possibilities:"
+msgstr "%s：�項「%s%s��明確；�能�項為："
+
+#: lib/getopt.c:319
+#, c-format
+msgid "%s: unrecognized option '%s%s'\n"
+msgstr "%s：無法識別的�項「%s%s�\n"
+
+#: lib/getopt.c:345
+#, c-format
+msgid "%s: option '%s%s' doesn't allow an argument\n"
+msgstr "%s：「%s%s��項�接�引數\n"
+
+#: lib/getopt.c:360
+#, c-format
+msgid "%s: option '%s%s' requires an argument\n"
+msgstr "%s：「%s%s��項需�個引數\n"
+
+#: lib/getopt.c:621
+#, c-format
+msgid "%s: invalid option -- '%c'\n"
+msgstr "%s: 無效的�項 -- \"%c\"\n"
+
+#: lib/getopt.c:636 lib/getopt.c:682
+#, c-format
+msgid "%s: option requires an argument -- '%c'\n"
+msgstr "%s: �項需�一個引數 -- \"%c\"\n"
+
+#: lib/obstack.c:337 lib/obstack.c:339 lib/xalloc-die.c:34
+msgid "memory exhausted"
+msgstr "記憶體用盡"
+
+#: lib/openat-die.c:38
+#, c-format
+msgid "unable to record current working directory"
+msgstr "無法記錄�行工作目錄"
+
+#: lib/openat-die.c:57
+#, c-format
+msgid "failed to return to initial working directory"
+msgstr "無法返回原本的工作目錄"
+
+#: lib/xbinary-io.c:37
+#, c-format
+msgid "failed to set file descriptor text/binary mode"
+msgstr "無法設定檔案�述符號的文字/二進�模�"
+
+#. TRANSLATORS:
+#. Get translations for open and closing quotation marks.
+#. The message catalog should translate "`" to a left
+#. quotation mark suitable for the locale, and similarly for
+#. "'".  For example, a French Unicode local should translate
+#. these to U+00AB (LEFT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), and U+00BB (RIGHT-POINTING DOUBLE ANGLE
+#. QUOTATION MARK), respectively.
+#.
+#. If the catalog has no translation, we will try to
+#. use Unicode U+2018 (LEFT SINGLE QUOTATION MARK) and
+#. Unicode U+2019 (RIGHT SINGLE QUOTATION MARK).  If the
+#. current locale is not Unicode, locale_quoting_style
+#. will quote 'like this', and clocale_quoting_style will
+#. quote "like this".  You should always include translations
+#. for "`" and "'" even if U+2018 and U+2019 are appropriate
+#. for your locale.
+#.
+#. If you don't know what to put here, please see
+#. <https://en.wikipedia.org/wiki/Quotation_marks_in_other_languages>
+#. and use glyphs suitable for your language.
+#: lib/quotearg.c:355
+msgid "`"
+msgstr "`"
+
+#: lib/quotearg.c:356
+msgid "'"
+msgstr "'"
+
+#: lib/regcomp.c:135
+msgid "Success"
+msgstr "�功"
+
+#: lib/regcomp.c:138
+msgid "No match"
+msgstr "沒有符�的項目"
+
+#: lib/regcomp.c:141
+msgid "Invalid regular expression"
+msgstr "無效的正�表示�"
+
+#: lib/regcomp.c:144
+msgid "Invalid collation character"
+msgstr "無效的�照字元"
+
+#: lib/regcomp.c:147
+msgid "Invalid character class name"
+msgstr "無效的字元類別�"
+
+#: lib/regcomp.c:150
+msgid "Trailing backslash"
+msgstr "末端有�斜線"
+
+#: lib/regcomp.c:153
+msgid "Invalid back reference"
+msgstr "無效的�後引用"
+
+#: lib/regcomp.c:156
+msgid "Unmatched [, [^, [:, [., or [="
+msgstr "沒有�應的 [，[^，[:，[. 或 [="
+
+#: lib/regcomp.c:159
+msgid "Unmatched ( or \\("
+msgstr "沒有�應的 ( 或 \\("
+
+#: lib/regcomp.c:162
+msgid "Unmatched \\{"
+msgstr "沒有�應的 \\{"
+
+#: lib/regcomp.c:165
+msgid "Invalid content of \\{\\}"
+msgstr "無效的 \\{\\} 內容"
+
+#: lib/regcomp.c:168
+msgid "Invalid range end"
+msgstr "無效的��範�"
+
+#: lib/regcomp.c:171
+msgid "Memory exhausted"
+msgstr "記憶體用盡"
+
+#: lib/regcomp.c:174
+msgid "Invalid preceding regular expression"
+msgstr "無效的�置正�表示�"
+
+#: lib/regcomp.c:177
+msgid "Premature end of regular expression"
+msgstr "正�表示��早��"
+
+#: lib/regcomp.c:180
+msgid "Regular expression too big"
+msgstr "正�表示��長"
+
+#: lib/regcomp.c:183
+msgid "Unmatched ) or \\)"
+msgstr "沒有�應的 ) 或 \\)"
+
+#: lib/regcomp.c:676
+msgid "No previous regular expression"
+msgstr "沒有先�的正�表示�"
+
+#: lib/version-etc.c:73
+#, c-format
+msgid "Packaged by %s (%s)\n"
+msgstr "套件由 %s (%s) 所打包\n"
+
+#: lib/version-etc.c:76
+#, c-format
+msgid "Packaged by %s\n"
+msgstr "套件由 %s 所打包\n"
+
+#. TRANSLATORS: Translate "(C)" to the copyright symbol
+#. (C-in-a-circle), if this symbol is available in the user's
+#. locale.  Otherwise, do not translate "(C)"; leave it as-is.
+#: lib/version-etc.c:83
+msgid "(C)"
+msgstr "(C)"
+
+#. TRANSLATORS: The %s placeholder is the web address of the GPL license.
+#: lib/version-etc.c:88
+#, c-format
+msgid ""
+"License GPLv3+: GNU GPL version 3 or later <%s>.\n"
+"This is free software: you are free to change and redistribute it.\n"
+"There is NO WARRANTY, to the extent permitted by law.\n"
+msgstr ""
+"授權�款 GPLv3+：GNU GPL 第 3 版或更新版 <%s>。\n"
+"這是自由軟體：您�自由修改或散布。\n"
+"在法律准許範�內�附帶�證。\n"
+
+#. TRANSLATORS: %s denotes an author name.
+#: lib/version-etc.c:105
+#, c-format
+msgid "Written by %s.\n"
+msgstr "由 %s 編寫。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:109
+#, c-format
+msgid "Written by %s and %s.\n"
+msgstr "由 %s 和 %s 編寫。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#: lib/version-etc.c:113
+#, c-format
+msgid "Written by %s, %s, and %s.\n"
+msgstr "由 %s�%s 和 %s 編寫。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:120
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"由 %s�%s�%s�\n"
+"和 %s 編寫。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:127
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"由 %s�%s�%s�\n"
+"%s 和 %s 編寫。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:134
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, and %s.\n"
+msgstr ""
+"由 %s�%s�%s�\n"
+"%s�%s 和 %s 編寫。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:142
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, and %s.\n"
+msgstr ""
+"由 %s�%s�%s�\n"
+"%s�%s�%s 和 %s 編寫。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:150
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"and %s.\n"
+msgstr ""
+"由 %s�%s�%s�\n"
+"%s�%s�%s�%s�\n"
+"和 %s 編寫。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:159
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, and %s.\n"
+msgstr ""
+"由 %s�%s�%s�\n"
+"%s�%s�%s�%s�\n"
+"%s 和 %s 編寫。\n"
+
+#. TRANSLATORS: Each %s denotes an author name.
+#. You can use line breaks, estimating that each author name occupies
+#. ca. 16 screen columns and that a screen line has ca. 80 columns.
+#: lib/version-etc.c:170
+#, c-format
+msgid ""
+"Written by %s, %s, %s,\n"
+"%s, %s, %s, %s,\n"
+"%s, %s, and others.\n"
+msgstr ""
+"由 %s�%s�%s�\n"
+"%s�%s�%s�%s�\n"
+"%s 和 %s 等人編寫。\n"
+
+#. TRANSLATORS: The placeholder indicates the bug-reporting address
+#. for this package.  Please add _another line_ saying
+#. "Report translation bugs to <...>\n" with the address for translation
+#. bugs (typically your translation team's web or email address).
+#: lib/version-etc.c:249
+#, c-format
+msgid "Report bugs to: %s\n"
+msgstr "回報臭蟲至：%s\n"
+
+#: lib/version-etc.c:251
+#, c-format
+msgid "Report %s bugs to: %s\n"
+msgstr "回報 %s bug 到: %s\n"
+
+#: lib/version-etc.c:255 lib/version-etc.c:257
+#, c-format
+msgid "%s home page: <%s>\n"
+msgstr "%s 首�: <%s>\n"
+
+#: lib/version-etc.c:260
+#, c-format
+msgid "General help using GNU software: <%s>\n"
+msgstr "GNU 軟體用法的一般說明：<%s>\n"
+
+#: src/grep.c:649
+msgid "(standard input)"
+msgstr "(標準輸入)"
+
+#: src/grep.c:829
+msgid "invalid context length argument"
+msgstr "無效的內容列數值"
+
+#: src/grep.c:894
+msgid "input is too large to count"
+msgstr "輸入�長無法計數"
+
+#: src/grep.c:1641
+#, c-format
+msgid "%s: binary file matches"
+msgstr "%s：二進�檔案符�"
+
+#: src/grep.c:1679
+#, c-format
+msgid "%s: warning: recursive directory loop"
+msgstr "%s：警告：目錄�複�迴"
+
+#: src/grep.c:1899
+#, c-format
+msgid "%s: input file is also the output"
+msgstr "%s：輸入檔亦為輸出�象"
+
+#: src/grep.c:1961 src/grep.c:1968
+#, c-format
+msgid "Usage: %s [OPTION]... PATTERNS [FILE]...\n"
+msgstr "用法: %s [�項]… PATTERNS [檔案]…\n"
+
+#: src/grep.c:1963
+#, c-format
+msgid "Try '%s --help' for more information.\n"
+msgstr "請使用 \"%s --help\" 以閱讀更多的資訊。\n"
+
+#: src/grep.c:1969
+#, c-format
+msgid "Search for PATTERNS in each FILE.\n"
+msgstr "在�個檔案中尋找 PATTERNS。\n"
+
+#: src/grep.c:1970
+#, c-format
+msgid ""
+"Example: %s -i 'hello world' menu.h main.c\n"
+"PATTERNS can contain multiple patterns separated by newlines.\n"
+"\n"
+"Pattern selection and interpretation:\n"
+msgstr ""
+"範例：%s -i 'hello world' menu.h main.c\n"
+"PATTERNS 也�以包�多個以�行符號分隔的形樣。\n"
+"\n"
+"形樣 (Pattern) �擇與解釋：\n"
+
+#: src/grep.c:1975
+#, c-format
+msgid ""
+"  -E, --extended-regexp     PATTERNS are extended regular expressions\n"
+"  -F, --fixed-strings       PATTERNS are strings\n"
+"  -G, --basic-regexp        PATTERNS are basic regular expressions\n"
+"  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"
+msgstr ""
+"  -E, --extended-regexp     PATTERNS 是一個延伸正則表示�\n"
+"  -F, --fixed-strings       PATTERNS 是一個字串\n"
+"  -G, --basic-regexp        PATTERNS 是一個基本正則表示�\n"
+"  -P, --perl-regexp         PATTERNS 是一個 Perl 正�表示�\n"
+
+#: src/grep.c:1981
+#, c-format
+msgid ""
+"  -e, --regexp=PATTERNS     use PATTERNS for matching\n"
+"  -f, --file=FILE           take PATTERNS from FILE\n"
+"  -i, --ignore-case         ignore case distinctions in patterns and data\n"
+"      --no-ignore-case      do not ignore case distinctions (default)\n"
+"  -w, --word-regexp         match only whole words\n"
+"  -x, --line-regexp         match only whole lines\n"
+"  -z, --null-data           a data line ends in 0 byte, not newline\n"
+msgstr ""
+"  -e, --regexp=模�         使用 <模�> 比�\n"
+"  -f, --file=檔案           自 <檔案> �得 <模�>\n"
+"  -i, --ignore-case         忽略模��資料的大�寫差異\n"
+"      --no-ignore-case      ��許忽略大�寫差異 (�設值)\n"
+"  -w, --word-regexp         僅比較整個單字\n"
+"  -x, --line-regexp         僅比較整行\n"
+"  -z, --null-data           設定資料列�尾為空白�元組，��列符號\n"
+
+#: src/grep.c:1989
+#, c-format
+msgid ""
+"\n"
+"Miscellaneous:\n"
+"  -s, --no-messages         suppress error messages\n"
+"  -v, --invert-match        select non-matching lines\n"
+"  -V, --version             display version information and exit\n"
+"      --help                display this help text and exit\n"
+msgstr ""
+"\n"
+"雜項:\n"
+"  -s, --no-messages         抑制錯誤訊�\n"
+"  -v, --invert-match        ���符�的列\n"
+"  -V, --version             �出版本資訊然後��\n"
+"      --help                顯示此說明然後��\n"
+
+#: src/grep.c:1996
+#, c-format
+msgid ""
+"\n"
+"Output control:\n"
+"  -m, --max-count=NUM       stop after NUM selected lines\n"
+"  -b, --byte-offset         print the byte offset with output lines\n"
+"  -n, --line-number         print line number with output lines\n"
+"      --line-buffered       flush output on every line\n"
+"  -H, --with-filename       print file name with output lines\n"
+"  -h, --no-filename         suppress the file name prefix on output\n"
+"      --label=LABEL         use LABEL as the standard input file name "
+"prefix\n"
+msgstr ""
+"\n"
+"輸出控制：\n"
+"  -m, --max-count=NUM       在第 NUM ��列後�止\n"
+"  -b, --byte-offset         �出�個輸出列的�元組�移�\n"
+"  -n, --line-number         �出�個輸出列的列號\n"
+"      --line-buffered       輸出�列後清除輸出\n"
+"  -H, --with-filename       �出輸出列的檔案�稱\n"
+"  -h, --no-filename         抑制輸出列的檔��綴\n"
+"      --label=LABEL         以 LABEL 作標準輸入的檔��綴\n"
+
+#: src/grep.c:2007
+#, c-format
+msgid ""
+"  -o, --only-matching       show only nonempty parts of lines that match\n"
+"  -q, --quiet, --silent     suppress all normal output\n"
+"      --binary-files=TYPE   assume that binary files are TYPE;\n"
+"                            TYPE is 'binary', 'text', or 'without-match'\n"
+"  -a, --text                equivalent to --binary-files=text\n"
+msgstr ""
+"  -o, --only-matching       �顯示相符行中的�空白部份\n"
+"  -q, --quiet, --silent     抑制全部常態的輸出\n"
+"      --binary-files=TYPE   設定二進制檔案為 TYPE 的檔案;\n"
+"                            TYPE �為 \"binary\"�\"text\" 或 \"without-match"
+"\"\n"
+"  -a, --text                等�於 --binary-files=text\n"
+
+#: src/grep.c:2014
+#, c-format
+msgid ""
+"  -I                        equivalent to --binary-files=without-match\n"
+"  -d, --directories=ACTION  how to handle directories;\n"
+"                            ACTION is 'read', 'recurse', or 'skip'\n"
+"  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n"
+"                            ACTION is 'read' or 'skip'\n"
+"  -r, --recursive           like --directories=recurse\n"
+"  -R, --dereference-recursive  likewise, but follow all symlinks\n"
+msgstr ""
+"  -I                        等�於 --binary-files=without-matc\n"
+"  -d, --directories=ACTION  檔案目錄的處�方�;\n"
+"                            ACTION 為 \"read\"�\"recurse\" 或 \"skip\"\n"
+"  -D, --devices=ACTION      �置�FIFO 和通訊端的處�方�;\n"
+"                            ACTION 為 \"read\" 或 \"skip\"\n"
+"  -R, -r, --recursive       等�於 --directories=recurse\n"
+
+#: src/grep.c:2023
+#, c-format
+msgid ""
+"      --include=GLOB        search only files that match GLOB (a file "
+"pattern)\n"
+"      --exclude=GLOB        skip files that match GLOB\n"
+"      --exclude-from=FILE   skip files that match any file pattern from "
+"FILE\n"
+"      --exclude-dir=GLOB    skip directories that match GLOB\n"
+msgstr ""
+"      --include=GLOB       ��尋符� GLOB (一種檔案模�) 的檔案\n"
+"      --exclude=GLOB       跳�符� GLOB 的檔案\n"
+"      --exclude-from=檔案  跳�符� <檔案> 中任何檔案模�的檔案\n"
+"      --exclude-dir=GLOB   跳�符� GLOB 的資料夾。\n"
+
+#: src/grep.c:2030
+#, c-format
+msgid ""
+"  -L, --files-without-match  print only names of FILEs with no selected "
+"lines\n"
+"  -l, --files-with-matches  print only names of FILEs with selected lines\n"
+"  -c, --count               print only a count of selected lines per FILE\n"
+"  -T, --initial-tab         make tabs line up (if needed)\n"
+"  -Z, --null                print 0 byte after FILE name\n"
+msgstr ""
+"  -L, --files-without-match  ��出未��行的 檔案 �稱\n"
+"  -l, --files-with-matches  ��出��行的 檔案 �稱\n"
+"  -c, --count               ��出�個 檔案 的��行項目\n"
+"  -T, --initial-tab         (需�時) �齊 Tab 符號\n"
+"  -Z, --null                在 檔案 �稱後�出空白�元組\n"
+
+#: src/grep.c:2036
+#, c-format
+msgid ""
+"\n"
+"Context control:\n"
+"  -B, --before-context=NUM  print NUM lines of leading context\n"
+"  -A, --after-context=NUM   print NUM lines of trailing context\n"
+"  -C, --context=NUM         print NUM lines of output context\n"
+msgstr ""
+"\n"
+"內容控制:\n"
+"  -B, --before-context=NUM  �出 NUM 列的�文\n"
+"  -A, --after-context=NUM   �出 NUM 列的後文\n"
+"  -C, --context=NUM         �出 NUM 列的內容\n"
+
+#: src/grep.c:2043
+#, c-format
+msgid ""
+"  -NUM                      same as --context=NUM\n"
+"      --group-separator=SEP  print SEP on line between matches with context\n"
+"      --no-group-separator  do not print separator for matches with context\n"
+"      --color[=WHEN],\n"
+"      --colour[=WHEN]       use markers to highlight the matching strings;\n"
+"                            WHEN is 'always', 'never', or 'auto'\n"
+"  -U, --binary              do not strip CR characters at EOL (MSDOS/"
+"Windows)\n"
+"\n"
+msgstr ""
+"  -NUM                      等�於 --context=NUM\n"
+"      --group-separator=SEP 在上一個和下一個符��果和鄰近列 (context) 之間輸"
+"出 SEP 分隔字串\n"
+"      --no-group-separator  ��在上一個和下一個符��果和鄰近列之間輸出分隔"
+"字串\n"
+"      --color[=WHEN]，\n"
+"      --colour[=WHEN]       用特殊�色標示符�字串;\n"
+"                            WHEN 為「always��「never�或「auto�\n"
+"  -U, --binary              ��刪除列尾 CR 字元 (MSDOS/Windows)\n"
+
+#: src/grep.c:2052
+#, c-format
+msgid ""
+"When FILE is '-', read standard input.  With no FILE, read '.' if\n"
+"recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n"
+"Exit status is 0 if any line is selected, 1 otherwise;\n"
+"if any error occurs and -q is not given, the exit status is 2.\n"
+msgstr ""
+"如果 <檔案> 為「-�，則讀�標準輸入資料。 當沒有指定 <檔案> 時，如果使用�迴"
+"模�，\n"
+"則讀�「.��則讀�「-�。當指定的 <檔案> 數目少於兩個時，則�設是 -h。\n"
+"如果有�到任何一列，則回傳��狀態 0，�則回傳 1；\n"
+"如果發生任何錯誤且沒有傳入 -q �項，��狀態則為 2。\n"
+
+#: src/grep.c:2094
+msgid "conflicting matchers specified"
+msgstr "指定了互相��的���項"
+
+#: src/grep.c:2101
+msgid "Perl matching not supported in a --disable-perl-regexp build"
+msgstr "--disable-perl-regexp 組建�支� Perl 比�"
+
+#: src/grep.c:2103
+#, c-format
+msgid "invalid matcher %s"
+msgstr "無效的���項 %s"
+
+#: src/grep.c:2538
+msgid "unknown devices method"
+msgstr "未知的�置方法"
+
+#: src/grep.c:2580
+#, c-format
+msgid "warning: --unix-byte-offsets (-u) is obsolete"
+msgstr "警告：--unix-byte-offsets (-u) 已經廢棄"
+
+#: src/grep.c:2686
+msgid "invalid max count"
+msgstr "無效的最大計次"
+
+#: src/grep.c:2744
+msgid "unknown binary-files type"
+msgstr "未知的二進�檔案類別"
+
+#: src/grep.c:2829
+msgid ""
+"Written by Mike Haertel and others; see\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."
+msgstr ""
+"由 Mike Haertel �其他人撰寫而�；請見\n"
+"<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>。"
+
+#: src/pcresearch.c:85
+msgid "failed to allocate memory for the PCRE JIT stack"
+msgstr "為 PCRE JIT 堆疊分�記憶體時出�錯誤"
+
+#: src/pcresearch.c:137
+msgid "-P supports only unibyte and UTF-8 locales"
+msgstr "-P �支�單�元組和 UTF-8 編碼"
+
+#: src/pcresearch.c:143
+msgid "the -P option only supports a single pattern"
+msgstr "-P �項�支�單一樣�"
+
+#: src/pcresearch.c:187
+msgid "internal error (should never happen)"
+msgstr "內部錯誤 (�應該出�這個錯誤)"
+
+#: src/pcresearch.c:230
+msgid "exceeded PCRE's line length limit"
+msgstr "已超� PCRE 的字數上�"
+
+#: src/pcresearch.c:306
+#, c-format
+msgid "%s: memory exhausted"
+msgstr "%s：已用盡記憶體"
+
+#: src/pcresearch.c:310
+#, c-format
+msgid "%s: exhausted PCRE JIT stack"
+msgstr "%s：已用盡 PCRE JIT 堆疊"
+
+#: src/pcresearch.c:315
+#, c-format
+msgid "%s: exceeded PCRE's backtracking limit"
+msgstr "%s：已超� PCRE 的回溯上�"
+
+#: src/pcresearch.c:319
+#, c-format
+msgid "%s: exceeded PCRE's recursion limit"
+msgstr "%s：超� PCRE 的�迴上�"
+
+#: src/pcresearch.c:327
+#, c-format
+msgid "%s: internal PCRE error: %d"
+msgstr "%s：內部 PCRE 錯誤: %d"
+
+#~ msgid "warning: GREP_OPTIONS is deprecated; please use an alias or script"
+#~ msgstr "警告：已經廢除 GREP_OPTIONS；請使用別�或文稿"
+
+#~ msgid "warning: %s: %s"
+#~ msgstr "警告: %s: %s"
+
+#~ msgid "%s home page: <https://www.gnu.org/software/%s/>\n"
+#~ msgstr "%s 首�：<https://www.gnu.org/software/%s/>\n"
+
+#~ msgid "invalid %s%s argument '%s'"
+#~ msgstr "無效 %s%s 引數 \"%s\""
+
+#~ msgid "invalid suffix in %s%s argument '%s'"
+#~ msgstr "%s%s 引數 \"%s\" 中有無效的尾綴"
+
+#~ msgid "%s%s argument '%s' too large"
+#~ msgstr "%s%s 引數 \"%s\" �大"
+
+#~ msgid "Mike Haertel"
+#~ msgstr "Mike Haertel"
+
+#~ msgid "internal error"
+#~ msgstr "內部錯誤"
+
+#~ msgid "%s: option '--%s' doesn't allow an argument\n"
+#~ msgstr "%s: �項 \"--%s\" �接�引數\n"
+
+#~ msgid "%s: unrecognized option '--%s'\n"
+#~ msgstr "%s: 未知的�項 \"--%s\"\n"
+
+#~ msgid "%s: option '-W %s' is ambiguous\n"
+#~ msgstr "%s: �項 \"-W %s\" �明確\n"
+
+#~ msgid "%s: option '-W %s' doesn't allow an argument\n"
+#~ msgstr "%s: �項 \"-W %s\" �接�引數\n"
+
+#~ msgid "%s: option '-W %s' requires an argument\n"
+#~ msgstr "%s: �項 \"-W %s\" 需�一個引數\n"
+
+#~ msgid "lseek failed"
+#~ msgstr "lseek 失敗"
+
+#~ msgid "PATTERN is, by default, a basic regular expression (BRE).\n"
+#~ msgstr "PATTERN 原則上是一個基本正�表示� (BRE)。\n"
+
+#~ msgid ""
+#~ "'egrep' means 'grep -E'.  'fgrep' means 'grep -F'.\n"
+#~ "Direct invocation as either 'egrep' or 'fgrep' is deprecated.\n"
+#~ msgstr ""
+#~ "\"egrep\" 等�於 \"grep -E\".  \"fgrep\" 等�於 \"grep -F\"。\n"
+#~ "直接呼� \"egrep\" 或 \"fgrep\" 的�法已被廢除。\n"
+
+#~ msgid "unescaped ^ or $ not supported with -Pz"
+#~ msgstr "-Pz �支�未逸出的 ^ 或 $ "
+
+#~ msgid "PATTERN is an extended regular expression (ERE).\n"
+#~ msgstr "PATTERN 是一個延伸正�表示� (ERE)。\n"
+
+#~ msgid "Invocation as 'egrep' is deprecated; use 'grep -E' instead.\n"
+#~ msgstr "\"egrep\" 的呼�方�已被廢除; 請用 \"grep -E\" 代替。\n"
+
+#~ msgid "PATTERN is a set of newline-separated fixed strings.\n"
+#~ msgstr "PATTERN 是一組以�列分隔開的固定字串。\n"
+
+#~ msgid "Invocation as 'fgrep' is deprecated; use 'grep -F' instead.\n"
+#~ msgstr "\"fgrep\" 的呼�方�已被廢除; 請用 \"grep -F\" 代替。\n"
+
+#~ msgid "GNU Grep home page: <%s>\n"
+#~ msgstr "GNU Grep 首�: <%s>\n"
+
+#~ msgid "%s can only use the %s pattern syntax"
+#~ msgstr "%s �能使用 %s 樣�的語法"
+
+#~ msgid "the --mmap option has been a no-op since 2010"
+#~ msgstr "--mmap �項自 2010 年起已經沒有任何效用"
+
+#~ msgid "unfinished repeat count"
+#~ msgstr "未完�的�複計次"
+
+#~ msgid "malformed repeat count"
+#~ msgstr "格�錯誤的�複次數"
+
+#~ msgid "out of memory"
+#~ msgstr "記憶體用盡"
+
+#~ msgid "writing output"
+#~ msgstr "正在輸出"
+
+#~ msgid "Usage: %s [OPTION]... PATTERN [FILE] ...\n"
+#~ msgstr "用法: %s [�項]… 樣� [檔案]…\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Output control:\n"
+#~ "  -m, --max-count=NUM       stop after NUM matches\n"
+#~ "  -b, --byte-offset         print the byte offset with output lines\n"
+#~ "  -n, --line-number         print line number with output lines\n"
+#~ "      --line-buffered       flush output on every line\n"
+#~ "  -H, --with-filename       print the filename for each match\n"
+#~ "  -h, --no-filename         suppress the prefixing filename on output\n"
+#~ "      --label=LABEL         print LABEL as filename for standard input\n"
+#~ "  -o, --only-matching       show only the part of a line matching "
+#~ "PATTERN\n"
+#~ "  -q, --quiet, --silent     suppress all normal output\n"
+#~ "      --binary-files=TYPE   assume that binary files are TYPE\n"
+#~ "                            TYPE is 'binary', 'text', or 'without-match'\n"
+#~ "  -a, --text                equivalent to --binary-files=text\n"
+#~ "  -I                        equivalent to --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  how to handle directories\n"
+#~ "                            ACTION is 'read', 'recurse', or 'skip'\n"
+#~ "  -D, --devices=ACTION      how to handle devices, FIFOs and sockets\n"
+#~ "                            ACTION is 'read' or 'skip'\n"
+#~ "  -R, -r, --recursive       equivalent to --directories=recurse\n"
+#~ "      --include=PATTERN     files that match PATTERN will be examined\n"
+#~ "      --exclude=PATTERN     files that match PATTERN will be skipped.\n"
+#~ "      --exclude-from=FILE   files that match PATTERN in FILE will be "
+#~ "skipped.\n"
+#~ "  -L, --files-without-match only print FILE names containing no match\n"
+#~ "  -l, --files-with-matches  only print FILE names containing matches\n"
+#~ "  -c, --count               only print a count of matching lines per "
+#~ "FILE\n"
+#~ "  -Z, --null                print 0 byte after FILE name\n"
+#~ msgstr ""
+#~ "\n"
+#~ "輸出控制:\n"
+#~ "  -m, --max-count=NUM       在顯示 NUM 個�果後�止\n"
+#~ "  -b, --byte-offset         �顯示�乎�件資料以 byte 為記數單�的�置\n"
+#~ "  -n, --line-number         �顯示�乎�件的行列編號\n"
+#~ "      --line-buffered       �一列輸出後都立�顯示\n"
+#~ "  -H, --with-filename       �列�果都�出檔案�稱\n"
+#~ "  -h, --no-filename         輸出時�顯示�置的檔案�稱\n"
+#~ "      --label=LABEL         �於標準輸入, 在顯示檔�處顯示 LABEL\n"
+#~ "  -o, --only-matching       �顯示一列資料中與樣��件相符的部分\n"
+#~ "  -q, --quiet, --silent     關閉所有一般輸出的\n"
+#~ "      --binary-files=TYPE   設定二進�檔案型別為 TYPE\n"
+#~ "                            TYPE 是 'binary', 'text', 或 'without-match' "
+#~ "之一\n"
+#~ "  -a, --text                等�於 --binary-files=text\n"
+#~ "  -I                        等�於 --binary-files=without-match\n"
+#~ "  -d, --directories=ACTION  處�目錄的方�\n"
+#~ "                            ACTION 是 'read', 'recurse', 或 'skip' 之一\n"
+#~ "  -D, --devices=ACTION      處��置檔案, FIFO 以� socket 的方�\n"
+#~ "                            ACTION 是 'read' 或 'skip'之一\n"
+#~ "  -R, -r, --recursive       等�於 --directories=recurse\n"
+#~ "      --include=PATTERN     檔�與 PATTERN 相符的將會被檢驗\n"
+#~ "      --exclude=PATTERN     檔�與 PATTERN 相符的將會被略�\n"
+#~ "      --exclude-from=FILE   檔�與 FILE 檔案中的 PATTERN 相符的將會被略"
+#~ "�\n"
+#~ "  -L, --files-without-match �列出找�到相符的檔案�稱\n"
+#~ "  -l, --files-with-matches  �列出有發�與樣�相符的檔案\n"
+#~ "  -c, --count               ����的檔案列出該檔案相符個數\n"
+#~ "  -Z, --null                在檔�之後輸出一個值為 0 的�元\n"
+
+#~ msgid ""
+#~ "\n"
+#~ "Report bugs to <bug-gnu-utils@gnu.org>.\n"
+#~ msgstr ""
+#~ "\n"
+#~ "請將發�的錯誤，以電�郵件寄到 <bug-gnu-utils@gnu.org>\n"
+
+#~ msgid "unknown directories method"
+#~ msgstr "未知的目錄方法"
+
+#~ msgid "%s (GNU grep) %s\n"
+#~ msgstr "%s (GNU grep) %s\n"
+
+#~ msgid ""
+#~ "Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.\n"
+#~ msgstr "版權所有 1988, 1992-1999, 2000, 2001 自由軟體基金會.\n"
+
+#~ msgid ""
+#~ "This is free software; see the source for copying conditions. There is "
+#~ "NO\n"
+#~ "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
+#~ "PURPOSE.\n"
+#~ msgstr ""
+#~ "這個程�是自由軟體; 請�閱其版權�款. 此軟體沒有\n"
+#~ "沒有任何�証; 也沒有任何�証它使用於�一特定目的.\n"
+
+#~ msgid "The -P and -z options cannot be combined"
+#~ msgstr "�數 -P 以� �數 -z 並�能��使用"
+
+#~ msgid "%s: illegal option -- %c\n"
+#~ msgstr "%s; ��用的�項 -- %c\n"
diff --git a/src/grep/src/Makefile.am b/src/grep/src/Makefile.am
new file mode 100644
index 0000000..c2e6e9a
--- /dev/null
+++ b/src/grep/src/Makefile.am
@@ -0,0 +1,70 @@
+## Process this file with automake to create Makefile.in
+# Copyright 1997-1998, 2005-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+LN = ln
+
+AM_CFLAGS = $(WARN_CFLAGS) $(WERROR_CFLAGS) $(PCRE_CFLAGS)
+
+# Tell the linker to omit references to unused shared libraries.
+AM_LDFLAGS = $(IGNORE_UNUSED_LIBRARIES_CFLAGS)
+
+bin_PROGRAMS = grep
+bin_SCRIPTS = egrep fgrep
+grep_SOURCES =					\
+  dfasearch.c					\
+  die.h						\
+  grep.c					\
+  kwsearch.c					\
+  kwset.c					\
+  searchutils.c
+if USE_PCRE
+grep_SOURCES += pcresearch.c
+endif
+
+noinst_HEADERS = grep.h kwset.h search.h system.h
+
+# Sometimes, the expansion of $(LIBINTL) includes -lc which may
+# include modules defining variables like 'optind', so libgreputils.a
+# must precede $(LIBINTL) in order to ensure we use GNU getopt.
+# But libgreputils.a must also follow $(LIBINTL), since libintl uses
+# replacement functions defined in libgreputils.a.
+LDADD = \
+  ../lib/libgreputils.a $(LIBINTL) ../lib/libgreputils.a $(LIBICONV) \
+  $(LIBTHREAD)
+
+grep_LDADD = $(LDADD) $(PCRE_LIBS) $(LIBCSTACK)
+localedir = $(datadir)/locale
+AM_CPPFLAGS = -I$(top_builddir)/lib -I$(top_srcdir)/lib
+
+EXTRA_DIST = egrep.sh
+
+egrep fgrep: egrep.sh Makefile
+	$(AM_V_GEN)grep=`echo grep | sed -e '$(transform)'` &&		\
+	case $@ in egrep) option=-E;; fgrep) option=-F;; esac &&	\
+	shell_does_substrings='set x/y && d=$${1%/*} && test "$$d" = x' && \
+	if $(SHELL) -c "$$shell_does_substrings" 2>/dev/null; then	\
+	  edit_substring='s,X,X,';					\
+	else								\
+	  edit_substring='s,\$${0%/\*},`expr "X$$0" : '\''X\\(.*\\)/'\''`,g'; \
+	fi &&								\
+	sed -e 's|[@]SHELL@|$(SHELL)|g'					\
+	    -e "$$edit_substring"					\
+	    -e "s|[@]grep@|$$grep|g"					\
+	    -e "s|[@]option@|$$option|g" <$(srcdir)/egrep.sh >$@-t
+	$(AM_V_at)chmod +x $@-t
+	$(AM_V_at)mv $@-t $@
+
+CLEANFILES = egrep fgrep *-t
diff --git a/src/grep/src/Makefile.in b/src/grep/src/Makefile.in
new file mode 100644
index 0000000..668b484
--- /dev/null
+++ b/src/grep/src/Makefile.in
@@ -0,0 +1,2031 @@
+# Makefile.in generated by automake 1.16d from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Copyright 1997-1998, 2005-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
+    case $$flg in \
+      *=*|--*) continue;; \
+        -*I) strip_trailopt 'I'; skip_next=yes;; \
+      -*I?*) strip_trailopt 'I';; \
+        -*O) strip_trailopt 'O'; skip_next=yes;; \
+      -*O?*) strip_trailopt 'O';; \
+        -*l) strip_trailopt 'l'; skip_next=yes;; \
+      -*l?*) strip_trailopt 'l';; \
+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
+    case $$flg in \
+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+bin_PROGRAMS = grep$(EXEEXT)
+@USE_PCRE_TRUE@am__append_1 = pcresearch.c
+subdir = src
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/m4/00gnulib.m4 \
+	$(top_srcdir)/m4/__inline.m4 \
+	$(top_srcdir)/m4/absolute-header.m4 $(top_srcdir)/m4/alloca.m4 \
+	$(top_srcdir)/m4/arpa_inet_h.m4 \
+	$(top_srcdir)/m4/asm-underscore.m4 $(top_srcdir)/m4/assert.m4 \
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+	$(top_srcdir)/m4/cycle-check.m4 $(top_srcdir)/m4/d-ino.m4 \
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+	$(top_srcdir)/m4/double-slash-root.m4 $(top_srcdir)/m4/dup.m4 \
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+	$(top_srcdir)/m4/environ.m4 $(top_srcdir)/m4/errno_h.m4 \
+	$(top_srcdir)/m4/error.m4 $(top_srcdir)/m4/exponentd.m4 \
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+GL_GNULIB_MBSNRTOWCS = @GL_GNULIB_MBSNRTOWCS@
+GL_GNULIB_MBSPBRK = @GL_GNULIB_MBSPBRK@
+GL_GNULIB_MBSPCASECMP = @GL_GNULIB_MBSPCASECMP@
+GL_GNULIB_MBSRCHR = @GL_GNULIB_MBSRCHR@
+GL_GNULIB_MBSRTOWCS = @GL_GNULIB_MBSRTOWCS@
+GL_GNULIB_MBSSEP = @GL_GNULIB_MBSSEP@
+GL_GNULIB_MBSSPN = @GL_GNULIB_MBSSPN@
+GL_GNULIB_MBSSTR = @GL_GNULIB_MBSSTR@
+GL_GNULIB_MBSTOK_R = @GL_GNULIB_MBSTOK_R@
+GL_GNULIB_MBTOWC = @GL_GNULIB_MBTOWC@
+GL_GNULIB_MDA_ACCESS = @GL_GNULIB_MDA_ACCESS@
+GL_GNULIB_MDA_CHDIR = @GL_GNULIB_MDA_CHDIR@
+GL_GNULIB_MDA_CHMOD = @GL_GNULIB_MDA_CHMOD@
+GL_GNULIB_MDA_CLOSE = @GL_GNULIB_MDA_CLOSE@
+GL_GNULIB_MDA_CREAT = @GL_GNULIB_MDA_CREAT@
+GL_GNULIB_MDA_DUP = @GL_GNULIB_MDA_DUP@
+GL_GNULIB_MDA_DUP2 = @GL_GNULIB_MDA_DUP2@
+GL_GNULIB_MDA_ECVT = @GL_GNULIB_MDA_ECVT@
+GL_GNULIB_MDA_EXECL = @GL_GNULIB_MDA_EXECL@
+GL_GNULIB_MDA_EXECLE = @GL_GNULIB_MDA_EXECLE@
+GL_GNULIB_MDA_EXECLP = @GL_GNULIB_MDA_EXECLP@
+GL_GNULIB_MDA_EXECV = @GL_GNULIB_MDA_EXECV@
+GL_GNULIB_MDA_EXECVE = @GL_GNULIB_MDA_EXECVE@
+GL_GNULIB_MDA_EXECVP = @GL_GNULIB_MDA_EXECVP@
+GL_GNULIB_MDA_EXECVPE = @GL_GNULIB_MDA_EXECVPE@
+GL_GNULIB_MDA_FCLOSEALL = @GL_GNULIB_MDA_FCLOSEALL@
+GL_GNULIB_MDA_FCVT = @GL_GNULIB_MDA_FCVT@
+GL_GNULIB_MDA_FDOPEN = @GL_GNULIB_MDA_FDOPEN@
+GL_GNULIB_MDA_FILENO = @GL_GNULIB_MDA_FILENO@
+GL_GNULIB_MDA_GCVT = @GL_GNULIB_MDA_GCVT@
+GL_GNULIB_MDA_GETCWD = @GL_GNULIB_MDA_GETCWD@
+GL_GNULIB_MDA_GETPID = @GL_GNULIB_MDA_GETPID@
+GL_GNULIB_MDA_GETW = @GL_GNULIB_MDA_GETW@
+GL_GNULIB_MDA_ISATTY = @GL_GNULIB_MDA_ISATTY@
+GL_GNULIB_MDA_LSEEK = @GL_GNULIB_MDA_LSEEK@
+GL_GNULIB_MDA_MEMCCPY = @GL_GNULIB_MDA_MEMCCPY@
+GL_GNULIB_MDA_MKDIR = @GL_GNULIB_MDA_MKDIR@
+GL_GNULIB_MDA_MKTEMP = @GL_GNULIB_MDA_MKTEMP@
+GL_GNULIB_MDA_OPEN = @GL_GNULIB_MDA_OPEN@
+GL_GNULIB_MDA_PUTENV = @GL_GNULIB_MDA_PUTENV@
+GL_GNULIB_MDA_PUTW = @GL_GNULIB_MDA_PUTW@
+GL_GNULIB_MDA_READ = @GL_GNULIB_MDA_READ@
+GL_GNULIB_MDA_RMDIR = @GL_GNULIB_MDA_RMDIR@
+GL_GNULIB_MDA_STRDUP = @GL_GNULIB_MDA_STRDUP@
+GL_GNULIB_MDA_SWAB = @GL_GNULIB_MDA_SWAB@
+GL_GNULIB_MDA_TEMPNAM = @GL_GNULIB_MDA_TEMPNAM@
+GL_GNULIB_MDA_TZSET = @GL_GNULIB_MDA_TZSET@
+GL_GNULIB_MDA_UMASK = @GL_GNULIB_MDA_UMASK@
+GL_GNULIB_MDA_UNLINK = @GL_GNULIB_MDA_UNLINK@
+GL_GNULIB_MDA_WCSDUP = @GL_GNULIB_MDA_WCSDUP@
+GL_GNULIB_MDA_WRITE = @GL_GNULIB_MDA_WRITE@
+GL_GNULIB_MEMCHR = @GL_GNULIB_MEMCHR@
+GL_GNULIB_MEMMEM = @GL_GNULIB_MEMMEM@
+GL_GNULIB_MEMPCPY = @GL_GNULIB_MEMPCPY@
+GL_GNULIB_MEMRCHR = @GL_GNULIB_MEMRCHR@
+GL_GNULIB_MKDIR = @GL_GNULIB_MKDIR@
+GL_GNULIB_MKDIRAT = @GL_GNULIB_MKDIRAT@
+GL_GNULIB_MKDTEMP = @GL_GNULIB_MKDTEMP@
+GL_GNULIB_MKFIFO = @GL_GNULIB_MKFIFO@
+GL_GNULIB_MKFIFOAT = @GL_GNULIB_MKFIFOAT@
+GL_GNULIB_MKNOD = @GL_GNULIB_MKNOD@
+GL_GNULIB_MKNODAT = @GL_GNULIB_MKNODAT@
+GL_GNULIB_MKOSTEMP = @GL_GNULIB_MKOSTEMP@
+GL_GNULIB_MKOSTEMPS = @GL_GNULIB_MKOSTEMPS@
+GL_GNULIB_MKSTEMP = @GL_GNULIB_MKSTEMP@
+GL_GNULIB_MKSTEMPS = @GL_GNULIB_MKSTEMPS@
+GL_GNULIB_MKTIME = @GL_GNULIB_MKTIME@
+GL_GNULIB_NANOSLEEP = @GL_GNULIB_NANOSLEEP@
+GL_GNULIB_NL_LANGINFO = @GL_GNULIB_NL_LANGINFO@
+GL_GNULIB_NONBLOCKING = @GL_GNULIB_NONBLOCKING@
+GL_GNULIB_OBSTACK_PRINTF = @GL_GNULIB_OBSTACK_PRINTF@
+GL_GNULIB_OBSTACK_PRINTF_POSIX = @GL_GNULIB_OBSTACK_PRINTF_POSIX@
+GL_GNULIB_OPEN = @GL_GNULIB_OPEN@
+GL_GNULIB_OPENAT = @GL_GNULIB_OPENAT@
+GL_GNULIB_OPENDIR = @GL_GNULIB_OPENDIR@
+GL_GNULIB_OVERRIDES_STRUCT_STAT = @GL_GNULIB_OVERRIDES_STRUCT_STAT@
+GL_GNULIB_PCLOSE = @GL_GNULIB_PCLOSE@
+GL_GNULIB_PERROR = @GL_GNULIB_PERROR@
+GL_GNULIB_PIPE = @GL_GNULIB_PIPE@
+GL_GNULIB_PIPE2 = @GL_GNULIB_PIPE2@
+GL_GNULIB_POPEN = @GL_GNULIB_POPEN@
+GL_GNULIB_POSIX_MEMALIGN = @GL_GNULIB_POSIX_MEMALIGN@
+GL_GNULIB_POSIX_OPENPT = @GL_GNULIB_POSIX_OPENPT@
+GL_GNULIB_PREAD = @GL_GNULIB_PREAD@
+GL_GNULIB_PRINTF = @GL_GNULIB_PRINTF@
+GL_GNULIB_PRINTF_POSIX = @GL_GNULIB_PRINTF_POSIX@
+GL_GNULIB_PSELECT = @GL_GNULIB_PSELECT@
+GL_GNULIB_PTHREAD_COND = @GL_GNULIB_PTHREAD_COND@
+GL_GNULIB_PTHREAD_MUTEX = @GL_GNULIB_PTHREAD_MUTEX@
+GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK = @GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK@
+GL_GNULIB_PTHREAD_ONCE = @GL_GNULIB_PTHREAD_ONCE@
+GL_GNULIB_PTHREAD_RWLOCK = @GL_GNULIB_PTHREAD_RWLOCK@
+GL_GNULIB_PTHREAD_SIGMASK = @GL_GNULIB_PTHREAD_SIGMASK@
+GL_GNULIB_PTHREAD_SPIN = @GL_GNULIB_PTHREAD_SPIN@
+GL_GNULIB_PTHREAD_THREAD = @GL_GNULIB_PTHREAD_THREAD@
+GL_GNULIB_PTHREAD_TSS = @GL_GNULIB_PTHREAD_TSS@
+GL_GNULIB_PTSNAME = @GL_GNULIB_PTSNAME@
+GL_GNULIB_PTSNAME_R = @GL_GNULIB_PTSNAME_R@
+GL_GNULIB_PUTC = @GL_GNULIB_PUTC@
+GL_GNULIB_PUTCHAR = @GL_GNULIB_PUTCHAR@
+GL_GNULIB_PUTENV = @GL_GNULIB_PUTENV@
+GL_GNULIB_PUTS = @GL_GNULIB_PUTS@
+GL_GNULIB_PWRITE = @GL_GNULIB_PWRITE@
+GL_GNULIB_QSORT_R = @GL_GNULIB_QSORT_R@
+GL_GNULIB_RAISE = @GL_GNULIB_RAISE@
+GL_GNULIB_RANDOM = @GL_GNULIB_RANDOM@
+GL_GNULIB_RANDOM_R = @GL_GNULIB_RANDOM_R@
+GL_GNULIB_RAWMEMCHR = @GL_GNULIB_RAWMEMCHR@
+GL_GNULIB_READ = @GL_GNULIB_READ@
+GL_GNULIB_READDIR = @GL_GNULIB_READDIR@
+GL_GNULIB_READLINK = @GL_GNULIB_READLINK@
+GL_GNULIB_READLINKAT = @GL_GNULIB_READLINKAT@
+GL_GNULIB_REALLOCARRAY = @GL_GNULIB_REALLOCARRAY@
+GL_GNULIB_REALLOC_POSIX = @GL_GNULIB_REALLOC_POSIX@
+GL_GNULIB_REALPATH = @GL_GNULIB_REALPATH@
+GL_GNULIB_RECV = @GL_GNULIB_RECV@
+GL_GNULIB_RECVFROM = @GL_GNULIB_RECVFROM@
+GL_GNULIB_REMOVE = @GL_GNULIB_REMOVE@
+GL_GNULIB_RENAME = @GL_GNULIB_RENAME@
+GL_GNULIB_RENAMEAT = @GL_GNULIB_RENAMEAT@
+GL_GNULIB_REWINDDIR = @GL_GNULIB_REWINDDIR@
+GL_GNULIB_RMDIR = @GL_GNULIB_RMDIR@
+GL_GNULIB_RPMATCH = @GL_GNULIB_RPMATCH@
+GL_GNULIB_SCANDIR = @GL_GNULIB_SCANDIR@
+GL_GNULIB_SCANF = @GL_GNULIB_SCANF@
+GL_GNULIB_SCHED_YIELD = @GL_GNULIB_SCHED_YIELD@
+GL_GNULIB_SECURE_GETENV = @GL_GNULIB_SECURE_GETENV@
+GL_GNULIB_SELECT = @GL_GNULIB_SELECT@
+GL_GNULIB_SEND = @GL_GNULIB_SEND@
+GL_GNULIB_SENDTO = @GL_GNULIB_SENDTO@
+GL_GNULIB_SETENV = @GL_GNULIB_SETENV@
+GL_GNULIB_SETHOSTNAME = @GL_GNULIB_SETHOSTNAME@
+GL_GNULIB_SETLOCALE = @GL_GNULIB_SETLOCALE@
+GL_GNULIB_SETLOCALE_NULL = @GL_GNULIB_SETLOCALE_NULL@
+GL_GNULIB_SETSOCKOPT = @GL_GNULIB_SETSOCKOPT@
+GL_GNULIB_SHUTDOWN = @GL_GNULIB_SHUTDOWN@
+GL_GNULIB_SIGABBREV_NP = @GL_GNULIB_SIGABBREV_NP@
+GL_GNULIB_SIGACTION = @GL_GNULIB_SIGACTION@
+GL_GNULIB_SIGDESCR_NP = @GL_GNULIB_SIGDESCR_NP@
+GL_GNULIB_SIGNAL_H_SIGPIPE = @GL_GNULIB_SIGNAL_H_SIGPIPE@
+GL_GNULIB_SIGPROCMASK = @GL_GNULIB_SIGPROCMASK@
+GL_GNULIB_SLEEP = @GL_GNULIB_SLEEP@
+GL_GNULIB_SNPRINTF = @GL_GNULIB_SNPRINTF@
+GL_GNULIB_SOCKET = @GL_GNULIB_SOCKET@
+GL_GNULIB_SPRINTF_POSIX = @GL_GNULIB_SPRINTF_POSIX@
+GL_GNULIB_STAT = @GL_GNULIB_STAT@
+GL_GNULIB_STDIO_H_NONBLOCKING = @GL_GNULIB_STDIO_H_NONBLOCKING@
+GL_GNULIB_STDIO_H_SIGPIPE = @GL_GNULIB_STDIO_H_SIGPIPE@
+GL_GNULIB_STPCPY = @GL_GNULIB_STPCPY@
+GL_GNULIB_STPNCPY = @GL_GNULIB_STPNCPY@
+GL_GNULIB_STRCASESTR = @GL_GNULIB_STRCASESTR@
+GL_GNULIB_STRCHRNUL = @GL_GNULIB_STRCHRNUL@
+GL_GNULIB_STRDUP = @GL_GNULIB_STRDUP@
+GL_GNULIB_STRERROR = @GL_GNULIB_STRERROR@
+GL_GNULIB_STRERRORNAME_NP = @GL_GNULIB_STRERRORNAME_NP@
+GL_GNULIB_STRERROR_R = @GL_GNULIB_STRERROR_R@
+GL_GNULIB_STRFTIME = @GL_GNULIB_STRFTIME@
+GL_GNULIB_STRNCAT = @GL_GNULIB_STRNCAT@
+GL_GNULIB_STRNDUP = @GL_GNULIB_STRNDUP@
+GL_GNULIB_STRNLEN = @GL_GNULIB_STRNLEN@
+GL_GNULIB_STRPBRK = @GL_GNULIB_STRPBRK@
+GL_GNULIB_STRPTIME = @GL_GNULIB_STRPTIME@
+GL_GNULIB_STRSEP = @GL_GNULIB_STRSEP@
+GL_GNULIB_STRSIGNAL = @GL_GNULIB_STRSIGNAL@
+GL_GNULIB_STRSTR = @GL_GNULIB_STRSTR@
+GL_GNULIB_STRTOD = @GL_GNULIB_STRTOD@
+GL_GNULIB_STRTOIMAX = @GL_GNULIB_STRTOIMAX@
+GL_GNULIB_STRTOK_R = @GL_GNULIB_STRTOK_R@
+GL_GNULIB_STRTOL = @GL_GNULIB_STRTOL@
+GL_GNULIB_STRTOLD = @GL_GNULIB_STRTOLD@
+GL_GNULIB_STRTOLL = @GL_GNULIB_STRTOLL@
+GL_GNULIB_STRTOUL = @GL_GNULIB_STRTOUL@
+GL_GNULIB_STRTOULL = @GL_GNULIB_STRTOULL@
+GL_GNULIB_STRTOUMAX = @GL_GNULIB_STRTOUMAX@
+GL_GNULIB_STRVERSCMP = @GL_GNULIB_STRVERSCMP@
+GL_GNULIB_SYMLINK = @GL_GNULIB_SYMLINK@
+GL_GNULIB_SYMLINKAT = @GL_GNULIB_SYMLINKAT@
+GL_GNULIB_SYSTEM_POSIX = @GL_GNULIB_SYSTEM_POSIX@
+GL_GNULIB_TIMEGM = @GL_GNULIB_TIMEGM@
+GL_GNULIB_TIMESPEC_GET = @GL_GNULIB_TIMESPEC_GET@
+GL_GNULIB_TIME_R = @GL_GNULIB_TIME_R@
+GL_GNULIB_TIME_RZ = @GL_GNULIB_TIME_RZ@
+GL_GNULIB_TMPFILE = @GL_GNULIB_TMPFILE@
+GL_GNULIB_TOWCTRANS = @GL_GNULIB_TOWCTRANS@
+GL_GNULIB_TRUNCATE = @GL_GNULIB_TRUNCATE@
+GL_GNULIB_TTYNAME_R = @GL_GNULIB_TTYNAME_R@
+GL_GNULIB_TZSET = @GL_GNULIB_TZSET@
+GL_GNULIB_UNISTD_H_GETOPT = @GL_GNULIB_UNISTD_H_GETOPT@
+GL_GNULIB_UNISTD_H_NONBLOCKING = @GL_GNULIB_UNISTD_H_NONBLOCKING@
+GL_GNULIB_UNISTD_H_SIGPIPE = @GL_GNULIB_UNISTD_H_SIGPIPE@
+GL_GNULIB_UNLINK = @GL_GNULIB_UNLINK@
+GL_GNULIB_UNLINKAT = @GL_GNULIB_UNLINKAT@
+GL_GNULIB_UNLOCKPT = @GL_GNULIB_UNLOCKPT@
+GL_GNULIB_UNSETENV = @GL_GNULIB_UNSETENV@
+GL_GNULIB_USLEEP = @GL_GNULIB_USLEEP@
+GL_GNULIB_UTIMENSAT = @GL_GNULIB_UTIMENSAT@
+GL_GNULIB_VASPRINTF = @GL_GNULIB_VASPRINTF@
+GL_GNULIB_VDPRINTF = @GL_GNULIB_VDPRINTF@
+GL_GNULIB_VFPRINTF = @GL_GNULIB_VFPRINTF@
+GL_GNULIB_VFPRINTF_POSIX = @GL_GNULIB_VFPRINTF_POSIX@
+GL_GNULIB_VFSCANF = @GL_GNULIB_VFSCANF@
+GL_GNULIB_VPRINTF = @GL_GNULIB_VPRINTF@
+GL_GNULIB_VPRINTF_POSIX = @GL_GNULIB_VPRINTF_POSIX@
+GL_GNULIB_VSCANF = @GL_GNULIB_VSCANF@
+GL_GNULIB_VSNPRINTF = @GL_GNULIB_VSNPRINTF@
+GL_GNULIB_VSPRINTF_POSIX = @GL_GNULIB_VSPRINTF_POSIX@
+GL_GNULIB_WCPCPY = @GL_GNULIB_WCPCPY@
+GL_GNULIB_WCPNCPY = @GL_GNULIB_WCPNCPY@
+GL_GNULIB_WCRTOMB = @GL_GNULIB_WCRTOMB@
+GL_GNULIB_WCSCASECMP = @GL_GNULIB_WCSCASECMP@
+GL_GNULIB_WCSCAT = @GL_GNULIB_WCSCAT@
+GL_GNULIB_WCSCHR = @GL_GNULIB_WCSCHR@
+GL_GNULIB_WCSCMP = @GL_GNULIB_WCSCMP@
+GL_GNULIB_WCSCOLL = @GL_GNULIB_WCSCOLL@
+GL_GNULIB_WCSCPY = @GL_GNULIB_WCSCPY@
+GL_GNULIB_WCSCSPN = @GL_GNULIB_WCSCSPN@
+GL_GNULIB_WCSDUP = @GL_GNULIB_WCSDUP@
+GL_GNULIB_WCSFTIME = @GL_GNULIB_WCSFTIME@
+GL_GNULIB_WCSLEN = @GL_GNULIB_WCSLEN@
+GL_GNULIB_WCSNCASECMP = @GL_GNULIB_WCSNCASECMP@
+GL_GNULIB_WCSNCAT = @GL_GNULIB_WCSNCAT@
+GL_GNULIB_WCSNCMP = @GL_GNULIB_WCSNCMP@
+GL_GNULIB_WCSNCPY = @GL_GNULIB_WCSNCPY@
+GL_GNULIB_WCSNLEN = @GL_GNULIB_WCSNLEN@
+GL_GNULIB_WCSNRTOMBS = @GL_GNULIB_WCSNRTOMBS@
+GL_GNULIB_WCSPBRK = @GL_GNULIB_WCSPBRK@
+GL_GNULIB_WCSRCHR = @GL_GNULIB_WCSRCHR@
+GL_GNULIB_WCSRTOMBS = @GL_GNULIB_WCSRTOMBS@
+GL_GNULIB_WCSSPN = @GL_GNULIB_WCSSPN@
+GL_GNULIB_WCSSTR = @GL_GNULIB_WCSSTR@
+GL_GNULIB_WCSTOK = @GL_GNULIB_WCSTOK@
+GL_GNULIB_WCSWIDTH = @GL_GNULIB_WCSWIDTH@
+GL_GNULIB_WCSXFRM = @GL_GNULIB_WCSXFRM@
+GL_GNULIB_WCTOB = @GL_GNULIB_WCTOB@
+GL_GNULIB_WCTOMB = @GL_GNULIB_WCTOMB@
+GL_GNULIB_WCTRANS = @GL_GNULIB_WCTRANS@
+GL_GNULIB_WCTYPE = @GL_GNULIB_WCTYPE@
+GL_GNULIB_WCWIDTH = @GL_GNULIB_WCWIDTH@
+GL_GNULIB_WMEMCHR = @GL_GNULIB_WMEMCHR@
+GL_GNULIB_WMEMCMP = @GL_GNULIB_WMEMCMP@
+GL_GNULIB_WMEMCPY = @GL_GNULIB_WMEMCPY@
+GL_GNULIB_WMEMMOVE = @GL_GNULIB_WMEMMOVE@
+GL_GNULIB_WMEMPCPY = @GL_GNULIB_WMEMPCPY@
+GL_GNULIB_WMEMSET = @GL_GNULIB_WMEMSET@
+GL_GNULIB_WRITE = @GL_GNULIB_WRITE@
+GL_GNULIB__EXIT = @GL_GNULIB__EXIT@
+GMSGFMT = @GMSGFMT@
+GMSGFMT_015 = @GMSGFMT_015@
+GNULIBHEADERS_OVERRIDE_WINT_T = @GNULIBHEADERS_OVERRIDE_WINT_T@
+GNULIB_GETTIMEOFDAY = @GNULIB_GETTIMEOFDAY@
+GNULIB_TEST_WARN_CFLAGS = @GNULIB_TEST_WARN_CFLAGS@
+GNULIB_WARN_CFLAGS = @GNULIB_WARN_CFLAGS@
+GREP = @GREP@
+HAVE_ACCEPT4 = @HAVE_ACCEPT4@
+HAVE_ALIGNED_ALLOC = @HAVE_ALIGNED_ALLOC@
+HAVE_ALLOCA_H = @HAVE_ALLOCA_H@
+HAVE_ALPHASORT = @HAVE_ALPHASORT@
+HAVE_ARPA_INET_H = @HAVE_ARPA_INET_H@
+HAVE_ATOLL = @HAVE_ATOLL@
+HAVE_BTOWC = @HAVE_BTOWC@
+HAVE_C99_STDINT_H = @HAVE_C99_STDINT_H@
+HAVE_CANONICALIZE_FILE_NAME = @HAVE_CANONICALIZE_FILE_NAME@
+HAVE_CHOWN = @HAVE_CHOWN@
+HAVE_CLOSEDIR = @HAVE_CLOSEDIR@
+HAVE_COPY_FILE_RANGE = @HAVE_COPY_FILE_RANGE@
+HAVE_CRTDEFS_H = @HAVE_CRTDEFS_H@
+HAVE_DECL_DIRFD = @HAVE_DECL_DIRFD@
+HAVE_DECL_ECVT = @HAVE_DECL_ECVT@
+HAVE_DECL_ENVIRON = @HAVE_DECL_ENVIRON@
+HAVE_DECL_EXECVPE = @HAVE_DECL_EXECVPE@
+HAVE_DECL_FCHDIR = @HAVE_DECL_FCHDIR@
+HAVE_DECL_FCLOSEALL = @HAVE_DECL_FCLOSEALL@
+HAVE_DECL_FCVT = @HAVE_DECL_FCVT@
+HAVE_DECL_FDATASYNC = @HAVE_DECL_FDATASYNC@
+HAVE_DECL_FDOPENDIR = @HAVE_DECL_FDOPENDIR@
+HAVE_DECL_FPURGE = @HAVE_DECL_FPURGE@
+HAVE_DECL_FSEEKO = @HAVE_DECL_FSEEKO@
+HAVE_DECL_FTELLO = @HAVE_DECL_FTELLO@
+HAVE_DECL_GCVT = @HAVE_DECL_GCVT@
+HAVE_DECL_GETDELIM = @HAVE_DECL_GETDELIM@
+HAVE_DECL_GETDOMAINNAME = @HAVE_DECL_GETDOMAINNAME@
+HAVE_DECL_GETLINE = @HAVE_DECL_GETLINE@
+HAVE_DECL_GETLOADAVG = @HAVE_DECL_GETLOADAVG@
+HAVE_DECL_GETLOGIN = @HAVE_DECL_GETLOGIN@
+HAVE_DECL_GETLOGIN_R = @HAVE_DECL_GETLOGIN_R@
+HAVE_DECL_GETPAGESIZE = @HAVE_DECL_GETPAGESIZE@
+HAVE_DECL_GETUSERSHELL = @HAVE_DECL_GETUSERSHELL@
+HAVE_DECL_IMAXABS = @HAVE_DECL_IMAXABS@
+HAVE_DECL_IMAXDIV = @HAVE_DECL_IMAXDIV@
+HAVE_DECL_INET_NTOP = @HAVE_DECL_INET_NTOP@
+HAVE_DECL_INET_PTON = @HAVE_DECL_INET_PTON@
+HAVE_DECL_INITSTATE = @HAVE_DECL_INITSTATE@
+HAVE_DECL_LOCALTIME_R = @HAVE_DECL_LOCALTIME_R@
+HAVE_DECL_MEMMEM = @HAVE_DECL_MEMMEM@
+HAVE_DECL_MEMRCHR = @HAVE_DECL_MEMRCHR@
+HAVE_DECL_OBSTACK_PRINTF = @HAVE_DECL_OBSTACK_PRINTF@
+HAVE_DECL_SETENV = @HAVE_DECL_SETENV@
+HAVE_DECL_SETHOSTNAME = @HAVE_DECL_SETHOSTNAME@
+HAVE_DECL_SETSTATE = @HAVE_DECL_SETSTATE@
+HAVE_DECL_SNPRINTF = @HAVE_DECL_SNPRINTF@
+HAVE_DECL_STRDUP = @HAVE_DECL_STRDUP@
+HAVE_DECL_STRERROR_R = @HAVE_DECL_STRERROR_R@
+HAVE_DECL_STRNDUP = @HAVE_DECL_STRNDUP@
+HAVE_DECL_STRNLEN = @HAVE_DECL_STRNLEN@
+HAVE_DECL_STRSIGNAL = @HAVE_DECL_STRSIGNAL@
+HAVE_DECL_STRTOIMAX = @HAVE_DECL_STRTOIMAX@
+HAVE_DECL_STRTOK_R = @HAVE_DECL_STRTOK_R@
+HAVE_DECL_STRTOUMAX = @HAVE_DECL_STRTOUMAX@
+HAVE_DECL_TRUNCATE = @HAVE_DECL_TRUNCATE@
+HAVE_DECL_TTYNAME_R = @HAVE_DECL_TTYNAME_R@
+HAVE_DECL_UNSETENV = @HAVE_DECL_UNSETENV@
+HAVE_DECL_VSNPRINTF = @HAVE_DECL_VSNPRINTF@
+HAVE_DECL_WCSDUP = @HAVE_DECL_WCSDUP@
+HAVE_DECL_WCTOB = @HAVE_DECL_WCTOB@
+HAVE_DECL_WCWIDTH = @HAVE_DECL_WCWIDTH@
+HAVE_DIRENT_H = @HAVE_DIRENT_H@
+HAVE_DPRINTF = @HAVE_DPRINTF@
+HAVE_DUP3 = @HAVE_DUP3@
+HAVE_DUPLOCALE = @HAVE_DUPLOCALE@
+HAVE_EUIDACCESS = @HAVE_EUIDACCESS@
+HAVE_EXECVPE = @HAVE_EXECVPE@
+HAVE_EXPLICIT_BZERO = @HAVE_EXPLICIT_BZERO@
+HAVE_FACCESSAT = @HAVE_FACCESSAT@
+HAVE_FCHDIR = @HAVE_FCHDIR@
+HAVE_FCHMODAT = @HAVE_FCHMODAT@
+HAVE_FCHOWNAT = @HAVE_FCHOWNAT@
+HAVE_FCNTL = @HAVE_FCNTL@
+HAVE_FDATASYNC = @HAVE_FDATASYNC@
+HAVE_FDOPENDIR = @HAVE_FDOPENDIR@
+HAVE_FEATURES_H = @HAVE_FEATURES_H@
+HAVE_FFSL = @HAVE_FFSL@
+HAVE_FFSLL = @HAVE_FFSLL@
+HAVE_FNMATCH = @HAVE_FNMATCH@
+HAVE_FNMATCH_H = @HAVE_FNMATCH_H@
+HAVE_FREELOCALE = @HAVE_FREELOCALE@
+HAVE_FSEEKO = @HAVE_FSEEKO@
+HAVE_FSTATAT = @HAVE_FSTATAT@
+HAVE_FSYNC = @HAVE_FSYNC@
+HAVE_FTELLO = @HAVE_FTELLO@
+HAVE_FTRUNCATE = @HAVE_FTRUNCATE@
+HAVE_FUTIMENS = @HAVE_FUTIMENS@
+HAVE_GETDTABLESIZE = @HAVE_GETDTABLESIZE@
+HAVE_GETENTROPY = @HAVE_GETENTROPY@
+HAVE_GETGROUPS = @HAVE_GETGROUPS@
+HAVE_GETHOSTNAME = @HAVE_GETHOSTNAME@
+HAVE_GETLOGIN = @HAVE_GETLOGIN@
+HAVE_GETOPT_H = @HAVE_GETOPT_H@
+HAVE_GETPAGESIZE = @HAVE_GETPAGESIZE@
+HAVE_GETPASS = @HAVE_GETPASS@
+HAVE_GETSUBOPT = @HAVE_GETSUBOPT@
+HAVE_GETTIMEOFDAY = @HAVE_GETTIMEOFDAY@
+HAVE_GETUMASK = @HAVE_GETUMASK@
+HAVE_GRANTPT = @HAVE_GRANTPT@
+HAVE_GROUP_MEMBER = @HAVE_GROUP_MEMBER@
+HAVE_IMAXDIV_T = @HAVE_IMAXDIV_T@
+HAVE_INITSTATE = @HAVE_INITSTATE@
+HAVE_INTTYPES_H = @HAVE_INTTYPES_H@
+HAVE_ISBLANK = @HAVE_ISBLANK@
+HAVE_ISWBLANK = @HAVE_ISWBLANK@
+HAVE_ISWCNTRL = @HAVE_ISWCNTRL@
+HAVE_LANGINFO_ALTMON = @HAVE_LANGINFO_ALTMON@
+HAVE_LANGINFO_CODESET = @HAVE_LANGINFO_CODESET@
+HAVE_LANGINFO_ERA = @HAVE_LANGINFO_ERA@
+HAVE_LANGINFO_H = @HAVE_LANGINFO_H@
+HAVE_LANGINFO_T_FMT_AMPM = @HAVE_LANGINFO_T_FMT_AMPM@
+HAVE_LANGINFO_YESEXPR = @HAVE_LANGINFO_YESEXPR@
+HAVE_LCHMOD = @HAVE_LCHMOD@
+HAVE_LCHOWN = @HAVE_LCHOWN@
+HAVE_LIBSIGSEGV = @HAVE_LIBSIGSEGV@
+HAVE_LINK = @HAVE_LINK@
+HAVE_LINKAT = @HAVE_LINKAT@
+HAVE_LSTAT = @HAVE_LSTAT@
+HAVE_MAX_ALIGN_T = @HAVE_MAX_ALIGN_T@
+HAVE_MBRLEN = @HAVE_MBRLEN@
+HAVE_MBRTOWC = @HAVE_MBRTOWC@
+HAVE_MBSINIT = @HAVE_MBSINIT@
+HAVE_MBSLEN = @HAVE_MBSLEN@
+HAVE_MBSNRTOWCS = @HAVE_MBSNRTOWCS@
+HAVE_MBSRTOWCS = @HAVE_MBSRTOWCS@
+HAVE_MBTOWC = @HAVE_MBTOWC@
+HAVE_MEMPCPY = @HAVE_MEMPCPY@
+HAVE_MKDIRAT = @HAVE_MKDIRAT@
+HAVE_MKDTEMP = @HAVE_MKDTEMP@
+HAVE_MKFIFO = @HAVE_MKFIFO@
+HAVE_MKFIFOAT = @HAVE_MKFIFOAT@
+HAVE_MKNOD = @HAVE_MKNOD@
+HAVE_MKNODAT = @HAVE_MKNODAT@
+HAVE_MKOSTEMP = @HAVE_MKOSTEMP@
+HAVE_MKOSTEMPS = @HAVE_MKOSTEMPS@
+HAVE_MKSTEMP = @HAVE_MKSTEMP@
+HAVE_MKSTEMPS = @HAVE_MKSTEMPS@
+HAVE_MSVC_INVALID_PARAMETER_HANDLER = @HAVE_MSVC_INVALID_PARAMETER_HANDLER@
+HAVE_NANOSLEEP = @HAVE_NANOSLEEP@
+HAVE_NETINET_IN_H = @HAVE_NETINET_IN_H@
+HAVE_NEWLOCALE = @HAVE_NEWLOCALE@
+HAVE_NL_LANGINFO = @HAVE_NL_LANGINFO@
+HAVE_OPENAT = @HAVE_OPENAT@
+HAVE_OPENDIR = @HAVE_OPENDIR@
+HAVE_OS_H = @HAVE_OS_H@
+HAVE_PCLOSE = @HAVE_PCLOSE@
+HAVE_PIPE = @HAVE_PIPE@
+HAVE_PIPE2 = @HAVE_PIPE2@
+HAVE_POPEN = @HAVE_POPEN@
+HAVE_POSIX_MEMALIGN = @HAVE_POSIX_MEMALIGN@
+HAVE_POSIX_OPENPT = @HAVE_POSIX_OPENPT@
+HAVE_POSIX_SIGNALBLOCKING = @HAVE_POSIX_SIGNALBLOCKING@
+HAVE_PREAD = @HAVE_PREAD@
+HAVE_PSELECT = @HAVE_PSELECT@
+HAVE_PTHREAD_ATTR_DESTROY = @HAVE_PTHREAD_ATTR_DESTROY@
+HAVE_PTHREAD_ATTR_GETDETACHSTATE = @HAVE_PTHREAD_ATTR_GETDETACHSTATE@
+HAVE_PTHREAD_ATTR_INIT = @HAVE_PTHREAD_ATTR_INIT@
+HAVE_PTHREAD_ATTR_SETDETACHSTATE = @HAVE_PTHREAD_ATTR_SETDETACHSTATE@
+HAVE_PTHREAD_CONDATTR_DESTROY = @HAVE_PTHREAD_CONDATTR_DESTROY@
+HAVE_PTHREAD_CONDATTR_INIT = @HAVE_PTHREAD_CONDATTR_INIT@
+HAVE_PTHREAD_COND_BROADCAST = @HAVE_PTHREAD_COND_BROADCAST@
+HAVE_PTHREAD_COND_DESTROY = @HAVE_PTHREAD_COND_DESTROY@
+HAVE_PTHREAD_COND_INIT = @HAVE_PTHREAD_COND_INIT@
+HAVE_PTHREAD_COND_SIGNAL = @HAVE_PTHREAD_COND_SIGNAL@
+HAVE_PTHREAD_COND_TIMEDWAIT = @HAVE_PTHREAD_COND_TIMEDWAIT@
+HAVE_PTHREAD_COND_WAIT = @HAVE_PTHREAD_COND_WAIT@
+HAVE_PTHREAD_CREATE = @HAVE_PTHREAD_CREATE@
+HAVE_PTHREAD_CREATE_DETACHED = @HAVE_PTHREAD_CREATE_DETACHED@
+HAVE_PTHREAD_DETACH = @HAVE_PTHREAD_DETACH@
+HAVE_PTHREAD_EQUAL = @HAVE_PTHREAD_EQUAL@
+HAVE_PTHREAD_EXIT = @HAVE_PTHREAD_EXIT@
+HAVE_PTHREAD_GETSPECIFIC = @HAVE_PTHREAD_GETSPECIFIC@
+HAVE_PTHREAD_H = @HAVE_PTHREAD_H@
+HAVE_PTHREAD_JOIN = @HAVE_PTHREAD_JOIN@
+HAVE_PTHREAD_KEY_CREATE = @HAVE_PTHREAD_KEY_CREATE@
+HAVE_PTHREAD_KEY_DELETE = @HAVE_PTHREAD_KEY_DELETE@
+HAVE_PTHREAD_MUTEXATTR_DESTROY = @HAVE_PTHREAD_MUTEXATTR_DESTROY@
+HAVE_PTHREAD_MUTEXATTR_GETROBUST = @HAVE_PTHREAD_MUTEXATTR_GETROBUST@
+HAVE_PTHREAD_MUTEXATTR_GETTYPE = @HAVE_PTHREAD_MUTEXATTR_GETTYPE@
+HAVE_PTHREAD_MUTEXATTR_INIT = @HAVE_PTHREAD_MUTEXATTR_INIT@
+HAVE_PTHREAD_MUTEXATTR_SETROBUST = @HAVE_PTHREAD_MUTEXATTR_SETROBUST@
+HAVE_PTHREAD_MUTEXATTR_SETTYPE = @HAVE_PTHREAD_MUTEXATTR_SETTYPE@
+HAVE_PTHREAD_MUTEX_DESTROY = @HAVE_PTHREAD_MUTEX_DESTROY@
+HAVE_PTHREAD_MUTEX_INIT = @HAVE_PTHREAD_MUTEX_INIT@
+HAVE_PTHREAD_MUTEX_LOCK = @HAVE_PTHREAD_MUTEX_LOCK@
+HAVE_PTHREAD_MUTEX_RECURSIVE = @HAVE_PTHREAD_MUTEX_RECURSIVE@
+HAVE_PTHREAD_MUTEX_ROBUST = @HAVE_PTHREAD_MUTEX_ROBUST@
+HAVE_PTHREAD_MUTEX_TIMEDLOCK = @HAVE_PTHREAD_MUTEX_TIMEDLOCK@
+HAVE_PTHREAD_MUTEX_TRYLOCK = @HAVE_PTHREAD_MUTEX_TRYLOCK@
+HAVE_PTHREAD_MUTEX_UNLOCK = @HAVE_PTHREAD_MUTEX_UNLOCK@
+HAVE_PTHREAD_ONCE = @HAVE_PTHREAD_ONCE@
+HAVE_PTHREAD_PROCESS_SHARED = @HAVE_PTHREAD_PROCESS_SHARED@
+HAVE_PTHREAD_RWLOCKATTR_DESTROY = @HAVE_PTHREAD_RWLOCKATTR_DESTROY@
+HAVE_PTHREAD_RWLOCKATTR_INIT = @HAVE_PTHREAD_RWLOCKATTR_INIT@
+HAVE_PTHREAD_RWLOCK_DESTROY = @HAVE_PTHREAD_RWLOCK_DESTROY@
+HAVE_PTHREAD_RWLOCK_INIT = @HAVE_PTHREAD_RWLOCK_INIT@
+HAVE_PTHREAD_RWLOCK_RDLOCK = @HAVE_PTHREAD_RWLOCK_RDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+HAVE_PTHREAD_RWLOCK_TRYRDLOCK = @HAVE_PTHREAD_RWLOCK_TRYRDLOCK@
+HAVE_PTHREAD_RWLOCK_TRYWRLOCK = @HAVE_PTHREAD_RWLOCK_TRYWRLOCK@
+HAVE_PTHREAD_RWLOCK_UNLOCK = @HAVE_PTHREAD_RWLOCK_UNLOCK@
+HAVE_PTHREAD_RWLOCK_WRLOCK = @HAVE_PTHREAD_RWLOCK_WRLOCK@
+HAVE_PTHREAD_SELF = @HAVE_PTHREAD_SELF@
+HAVE_PTHREAD_SETSPECIFIC = @HAVE_PTHREAD_SETSPECIFIC@
+HAVE_PTHREAD_SIGMASK = @HAVE_PTHREAD_SIGMASK@
+HAVE_PTHREAD_SPINLOCK_T = @HAVE_PTHREAD_SPINLOCK_T@
+HAVE_PTHREAD_SPIN_DESTROY = @HAVE_PTHREAD_SPIN_DESTROY@
+HAVE_PTHREAD_SPIN_INIT = @HAVE_PTHREAD_SPIN_INIT@
+HAVE_PTHREAD_SPIN_LOCK = @HAVE_PTHREAD_SPIN_LOCK@
+HAVE_PTHREAD_SPIN_TRYLOCK = @HAVE_PTHREAD_SPIN_TRYLOCK@
+HAVE_PTHREAD_SPIN_UNLOCK = @HAVE_PTHREAD_SPIN_UNLOCK@
+HAVE_PTHREAD_T = @HAVE_PTHREAD_T@
+HAVE_PTSNAME = @HAVE_PTSNAME@
+HAVE_PTSNAME_R = @HAVE_PTSNAME_R@
+HAVE_PWRITE = @HAVE_PWRITE@
+HAVE_QSORT_R = @HAVE_QSORT_R@
+HAVE_RAISE = @HAVE_RAISE@
+HAVE_RANDOM = @HAVE_RANDOM@
+HAVE_RANDOM_H = @HAVE_RANDOM_H@
+HAVE_RANDOM_R = @HAVE_RANDOM_R@
+HAVE_RAWMEMCHR = @HAVE_RAWMEMCHR@
+HAVE_READDIR = @HAVE_READDIR@
+HAVE_READLINK = @HAVE_READLINK@
+HAVE_READLINKAT = @HAVE_READLINKAT@
+HAVE_REALLOCARRAY = @HAVE_REALLOCARRAY@
+HAVE_REALPATH = @HAVE_REALPATH@
+HAVE_RENAMEAT = @HAVE_RENAMEAT@
+HAVE_REWINDDIR = @HAVE_REWINDDIR@
+HAVE_RPMATCH = @HAVE_RPMATCH@
+HAVE_SA_FAMILY_T = @HAVE_SA_FAMILY_T@
+HAVE_SCANDIR = @HAVE_SCANDIR@
+HAVE_SCHED_H = @HAVE_SCHED_H@
+HAVE_SCHED_YIELD = @HAVE_SCHED_YIELD@
+HAVE_SECURE_GETENV = @HAVE_SECURE_GETENV@
+HAVE_SETENV = @HAVE_SETENV@
+HAVE_SETHOSTNAME = @HAVE_SETHOSTNAME@
+HAVE_SETSTATE = @HAVE_SETSTATE@
+HAVE_SIGABBREV_NP = @HAVE_SIGABBREV_NP@
+HAVE_SIGACTION = @HAVE_SIGACTION@
+HAVE_SIGDESCR_NP = @HAVE_SIGDESCR_NP@
+HAVE_SIGHANDLER_T = @HAVE_SIGHANDLER_T@
+HAVE_SIGINFO_T = @HAVE_SIGINFO_T@
+HAVE_SIGNED_SIG_ATOMIC_T = @HAVE_SIGNED_SIG_ATOMIC_T@
+HAVE_SIGNED_WCHAR_T = @HAVE_SIGNED_WCHAR_T@
+HAVE_SIGNED_WINT_T = @HAVE_SIGNED_WINT_T@
+HAVE_SIGSET_T = @HAVE_SIGSET_T@
+HAVE_SLEEP = @HAVE_SLEEP@
+HAVE_STDINT_H = @HAVE_STDINT_H@
+HAVE_STPCPY = @HAVE_STPCPY@
+HAVE_STPNCPY = @HAVE_STPNCPY@
+HAVE_STRCASESTR = @HAVE_STRCASESTR@
+HAVE_STRCHRNUL = @HAVE_STRCHRNUL@
+HAVE_STRERRORNAME_NP = @HAVE_STRERRORNAME_NP@
+HAVE_STRPBRK = @HAVE_STRPBRK@
+HAVE_STRPTIME = @HAVE_STRPTIME@
+HAVE_STRSEP = @HAVE_STRSEP@
+HAVE_STRTOD = @HAVE_STRTOD@
+HAVE_STRTOL = @HAVE_STRTOL@
+HAVE_STRTOLD = @HAVE_STRTOLD@
+HAVE_STRTOLL = @HAVE_STRTOLL@
+HAVE_STRTOUL = @HAVE_STRTOUL@
+HAVE_STRTOULL = @HAVE_STRTOULL@
+HAVE_STRUCT_RANDOM_DATA = @HAVE_STRUCT_RANDOM_DATA@
+HAVE_STRUCT_SCHED_PARAM = @HAVE_STRUCT_SCHED_PARAM@
+HAVE_STRUCT_SIGACTION_SA_SIGACTION = @HAVE_STRUCT_SIGACTION_SA_SIGACTION@
+HAVE_STRUCT_SOCKADDR_STORAGE = @HAVE_STRUCT_SOCKADDR_STORAGE@
+HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = @HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY@
+HAVE_STRUCT_TIMEVAL = @HAVE_STRUCT_TIMEVAL@
+HAVE_STRVERSCMP = @HAVE_STRVERSCMP@
+HAVE_SYMLINK = @HAVE_SYMLINK@
+HAVE_SYMLINKAT = @HAVE_SYMLINKAT@
+HAVE_SYS_BITYPES_H = @HAVE_SYS_BITYPES_H@
+HAVE_SYS_CDEFS_H = @HAVE_SYS_CDEFS_H@
+HAVE_SYS_INTTYPES_H = @HAVE_SYS_INTTYPES_H@
+HAVE_SYS_IOCTL_H = @HAVE_SYS_IOCTL_H@
+HAVE_SYS_LOADAVG_H = @HAVE_SYS_LOADAVG_H@
+HAVE_SYS_PARAM_H = @HAVE_SYS_PARAM_H@
+HAVE_SYS_SELECT_H = @HAVE_SYS_SELECT_H@
+HAVE_SYS_SOCKET_H = @HAVE_SYS_SOCKET_H@
+HAVE_SYS_TIME_H = @HAVE_SYS_TIME_H@
+HAVE_SYS_TYPES_H = @HAVE_SYS_TYPES_H@
+HAVE_SYS_UIO_H = @HAVE_SYS_UIO_H@
+HAVE_TIMEGM = @HAVE_TIMEGM@
+HAVE_TIMESPEC_GET = @HAVE_TIMESPEC_GET@
+HAVE_TIMEZONE_T = @HAVE_TIMEZONE_T@
+HAVE_TYPE_VOLATILE_SIG_ATOMIC_T = @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
+HAVE_UNISTD_H = @HAVE_UNISTD_H@
+HAVE_UNLINKAT = @HAVE_UNLINKAT@
+HAVE_UNLOCKPT = @HAVE_UNLOCKPT@
+HAVE_USLEEP = @HAVE_USLEEP@
+HAVE_UTIMENSAT = @HAVE_UTIMENSAT@
+HAVE_VASPRINTF = @HAVE_VASPRINTF@
+HAVE_VDPRINTF = @HAVE_VDPRINTF@
+HAVE_VISIBILITY = @HAVE_VISIBILITY@
+HAVE_WCHAR_H = @HAVE_WCHAR_H@
+HAVE_WCHAR_T = @HAVE_WCHAR_T@
+HAVE_WCPCPY = @HAVE_WCPCPY@
+HAVE_WCPNCPY = @HAVE_WCPNCPY@
+HAVE_WCRTOMB = @HAVE_WCRTOMB@
+HAVE_WCSCASECMP = @HAVE_WCSCASECMP@
+HAVE_WCSCAT = @HAVE_WCSCAT@
+HAVE_WCSCHR = @HAVE_WCSCHR@
+HAVE_WCSCMP = @HAVE_WCSCMP@
+HAVE_WCSCOLL = @HAVE_WCSCOLL@
+HAVE_WCSCPY = @HAVE_WCSCPY@
+HAVE_WCSCSPN = @HAVE_WCSCSPN@
+HAVE_WCSDUP = @HAVE_WCSDUP@
+HAVE_WCSFTIME = @HAVE_WCSFTIME@
+HAVE_WCSLEN = @HAVE_WCSLEN@
+HAVE_WCSNCASECMP = @HAVE_WCSNCASECMP@
+HAVE_WCSNCAT = @HAVE_WCSNCAT@
+HAVE_WCSNCMP = @HAVE_WCSNCMP@
+HAVE_WCSNCPY = @HAVE_WCSNCPY@
+HAVE_WCSNLEN = @HAVE_WCSNLEN@
+HAVE_WCSNRTOMBS = @HAVE_WCSNRTOMBS@
+HAVE_WCSPBRK = @HAVE_WCSPBRK@
+HAVE_WCSRCHR = @HAVE_WCSRCHR@
+HAVE_WCSRTOMBS = @HAVE_WCSRTOMBS@
+HAVE_WCSSPN = @HAVE_WCSSPN@
+HAVE_WCSSTR = @HAVE_WCSSTR@
+HAVE_WCSTOK = @HAVE_WCSTOK@
+HAVE_WCSWIDTH = @HAVE_WCSWIDTH@
+HAVE_WCSXFRM = @HAVE_WCSXFRM@
+HAVE_WCTRANS_T = @HAVE_WCTRANS_T@
+HAVE_WCTYPE_H = @HAVE_WCTYPE_H@
+HAVE_WCTYPE_T = @HAVE_WCTYPE_T@
+HAVE_WINSOCK2_H = @HAVE_WINSOCK2_H@
+HAVE_WINT_T = @HAVE_WINT_T@
+HAVE_WMEMCHR = @HAVE_WMEMCHR@
+HAVE_WMEMCMP = @HAVE_WMEMCMP@
+HAVE_WMEMCPY = @HAVE_WMEMCPY@
+HAVE_WMEMMOVE = @HAVE_WMEMMOVE@
+HAVE_WMEMPCPY = @HAVE_WMEMPCPY@
+HAVE_WMEMSET = @HAVE_WMEMSET@
+HAVE_WS2TCPIP_H = @HAVE_WS2TCPIP_H@
+HAVE_XLOCALE_H = @HAVE_XLOCALE_H@
+HAVE__BOOL = @HAVE__BOOL@
+HAVE__EXIT = @HAVE__EXIT@
+HOST_CPU = @HOST_CPU@
+HOST_CPU_C_ABI = @HOST_CPU_C_ABI@
+ICONV_CONST = @ICONV_CONST@
+ICONV_H = @ICONV_H@
+INCLUDE_NEXT = @INCLUDE_NEXT@
+INCLUDE_NEXT_AS_FIRST_DIRECTIVE = @INCLUDE_NEXT_AS_FIRST_DIRECTIVE@
+INET_PTON_LIB = @INET_PTON_LIB@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INT32_MAX_LT_INTMAX_MAX = @INT32_MAX_LT_INTMAX_MAX@
+INT64_MAX_EQ_LONG_MAX = @INT64_MAX_EQ_LONG_MAX@
+INTLLIBS = @INTLLIBS@
+INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
+LDFLAGS = @LDFLAGS@
+LIBCSTACK = @LIBCSTACK@
+LIBGREPUTILS_LIBDEPS = @LIBGREPUTILS_LIBDEPS@
+LIBGREPUTILS_LTLIBDEPS = @LIBGREPUTILS_LTLIBDEPS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBMULTITHREAD = @LIBMULTITHREAD@
+LIBOBJS = @LIBOBJS@
+LIBPMULTITHREAD = @LIBPMULTITHREAD@
+LIBPTHREAD = @LIBPTHREAD@
+LIBS = @LIBS@
+LIBSIGSEGV = @LIBSIGSEGV@
+LIBSIGSEGV_PREFIX = @LIBSIGSEGV_PREFIX@
+LIBSOCKET = @LIBSOCKET@
+LIBSTDTHREAD = @LIBSTDTHREAD@
+LIBTESTS_LIBDEPS = @LIBTESTS_LIBDEPS@
+LIBTHREAD = @LIBTHREAD@
+LIBUNISTRING_UNISTR_H = @LIBUNISTRING_UNISTR_H@
+LIBUNISTRING_UNITYPES_H = @LIBUNISTRING_UNITYPES_H@
+LIBUNISTRING_UNIWIDTH_H = @LIBUNISTRING_UNIWIDTH_H@
+LIB_HARD_LOCALE = @LIB_HARD_LOCALE@
+LIB_MBRTOWC = @LIB_MBRTOWC@
+LIB_NANOSLEEP = @LIB_NANOSLEEP@
+LIB_NL_LANGINFO = @LIB_NL_LANGINFO@
+LIB_PTHREAD = @LIB_PTHREAD@
+LIB_PTHREAD_SIGMASK = @LIB_PTHREAD_SIGMASK@
+LIB_SCHED_YIELD = @LIB_SCHED_YIELD@
+LIB_SELECT = @LIB_SELECT@
+LIB_SETLOCALE = @LIB_SETLOCALE@
+LIB_SETLOCALE_NULL = @LIB_SETLOCALE_NULL@
+LIMITS_H = @LIMITS_H@
+LOCALCHARSET_TESTS_ENVIRONMENT = @LOCALCHARSET_TESTS_ENVIRONMENT@
+LOCALENAME_ENHANCE_LOCALE_FUNCS = @LOCALENAME_ENHANCE_LOCALE_FUNCS@
+LOCALE_FR = @LOCALE_FR@
+LOCALE_FR_UTF8 = @LOCALE_FR_UTF8@
+LOCALE_JA = @LOCALE_JA@
+LOCALE_TR_UTF8 = @LOCALE_TR_UTF8@
+LOCALE_ZH_CN = @LOCALE_ZH_CN@
+LTLIBCSTACK = @LTLIBCSTACK@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBMULTITHREAD = @LTLIBMULTITHREAD@
+LTLIBOBJS = @LTLIBOBJS@
+LTLIBSIGSEGV = @LTLIBSIGSEGV@
+LTLIBTHREAD = @LTLIBTHREAD@
+MAKEINFO = @MAKEINFO@
+MKDIR_P = @MKDIR_P@
+MSGFMT = @MSGFMT@
+MSGFMT_015 = @MSGFMT_015@
+MSGMERGE = @MSGMERGE@
+NETINET_IN_H = @NETINET_IN_H@
+NEXT_ARPA_INET_H = @NEXT_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H = @NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_CTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_CTYPE_H@
+NEXT_AS_FIRST_DIRECTIVE_DIRENT_H = @NEXT_AS_FIRST_DIRECTIVE_DIRENT_H@
+NEXT_AS_FIRST_DIRECTIVE_ERRNO_H = @NEXT_AS_FIRST_DIRECTIVE_ERRNO_H@
+NEXT_AS_FIRST_DIRECTIVE_FCNTL_H = @NEXT_AS_FIRST_DIRECTIVE_FCNTL_H@
+NEXT_AS_FIRST_DIRECTIVE_FLOAT_H = @NEXT_AS_FIRST_DIRECTIVE_FLOAT_H@
+NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H = @NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H@
+NEXT_AS_FIRST_DIRECTIVE_GETOPT_H = @NEXT_AS_FIRST_DIRECTIVE_GETOPT_H@
+NEXT_AS_FIRST_DIRECTIVE_ICONV_H = @NEXT_AS_FIRST_DIRECTIVE_ICONV_H@
+NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H = @NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H = @NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H@
+NEXT_AS_FIRST_DIRECTIVE_LIMITS_H = @NEXT_AS_FIRST_DIRECTIVE_LIMITS_H@
+NEXT_AS_FIRST_DIRECTIVE_LOCALE_H = @NEXT_AS_FIRST_DIRECTIVE_LOCALE_H@
+NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H = @NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H@
+NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H = @NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H@
+NEXT_AS_FIRST_DIRECTIVE_SCHED_H = @NEXT_AS_FIRST_DIRECTIVE_SCHED_H@
+NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H = @NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H@
+NEXT_AS_FIRST_DIRECTIVE_STDARG_H = @NEXT_AS_FIRST_DIRECTIVE_STDARG_H@
+NEXT_AS_FIRST_DIRECTIVE_STDDEF_H = @NEXT_AS_FIRST_DIRECTIVE_STDDEF_H@
+NEXT_AS_FIRST_DIRECTIVE_STDINT_H = @NEXT_AS_FIRST_DIRECTIVE_STDINT_H@
+NEXT_AS_FIRST_DIRECTIVE_STDIO_H = @NEXT_AS_FIRST_DIRECTIVE_STDIO_H@
+NEXT_AS_FIRST_DIRECTIVE_STDLIB_H = @NEXT_AS_FIRST_DIRECTIVE_STDLIB_H@
+NEXT_AS_FIRST_DIRECTIVE_STRING_H = @NEXT_AS_FIRST_DIRECTIVE_STRING_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H@
+NEXT_AS_FIRST_DIRECTIVE_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_UNISTD_H = @NEXT_AS_FIRST_DIRECTIVE_UNISTD_H@
+NEXT_AS_FIRST_DIRECTIVE_WCHAR_H = @NEXT_AS_FIRST_DIRECTIVE_WCHAR_H@
+NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H@
+NEXT_CTYPE_H = @NEXT_CTYPE_H@
+NEXT_DIRENT_H = @NEXT_DIRENT_H@
+NEXT_ERRNO_H = @NEXT_ERRNO_H@
+NEXT_FCNTL_H = @NEXT_FCNTL_H@
+NEXT_FLOAT_H = @NEXT_FLOAT_H@
+NEXT_FNMATCH_H = @NEXT_FNMATCH_H@
+NEXT_GETOPT_H = @NEXT_GETOPT_H@
+NEXT_ICONV_H = @NEXT_ICONV_H@
+NEXT_INTTYPES_H = @NEXT_INTTYPES_H@
+NEXT_LANGINFO_H = @NEXT_LANGINFO_H@
+NEXT_LIMITS_H = @NEXT_LIMITS_H@
+NEXT_LOCALE_H = @NEXT_LOCALE_H@
+NEXT_NETINET_IN_H = @NEXT_NETINET_IN_H@
+NEXT_PTHREAD_H = @NEXT_PTHREAD_H@
+NEXT_SCHED_H = @NEXT_SCHED_H@
+NEXT_SIGNAL_H = @NEXT_SIGNAL_H@
+NEXT_STDARG_H = @NEXT_STDARG_H@
+NEXT_STDDEF_H = @NEXT_STDDEF_H@
+NEXT_STDINT_H = @NEXT_STDINT_H@
+NEXT_STDIO_H = @NEXT_STDIO_H@
+NEXT_STDLIB_H = @NEXT_STDLIB_H@
+NEXT_STRING_H = @NEXT_STRING_H@
+NEXT_SYS_IOCTL_H = @NEXT_SYS_IOCTL_H@
+NEXT_SYS_SELECT_H = @NEXT_SYS_SELECT_H@
+NEXT_SYS_SOCKET_H = @NEXT_SYS_SOCKET_H@
+NEXT_SYS_STAT_H = @NEXT_SYS_STAT_H@
+NEXT_SYS_TIME_H = @NEXT_SYS_TIME_H@
+NEXT_SYS_TYPES_H = @NEXT_SYS_TYPES_H@
+NEXT_SYS_UIO_H = @NEXT_SYS_UIO_H@
+NEXT_TIME_H = @NEXT_TIME_H@
+NEXT_UNISTD_H = @NEXT_UNISTD_H@
+NEXT_WCHAR_H = @NEXT_WCHAR_H@
+NEXT_WCTYPE_H = @NEXT_WCTYPE_H@
+OBJEXT = @OBJEXT@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PCRE_CFLAGS = @PCRE_CFLAGS@
+PCRE_LIBS = @PCRE_LIBS@
+PERL = @PERL@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+POSUB = @POSUB@
+PRAGMA_COLUMNS = @PRAGMA_COLUMNS@
+PRAGMA_SYSTEM_HEADER = @PRAGMA_SYSTEM_HEADER@
+PRIPTR_PREFIX = @PRIPTR_PREFIX@
+PTHREAD_H_DEFINES_STRUCT_TIMESPEC = @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
+PTRDIFF_T_SUFFIX = @PTRDIFF_T_SUFFIX@
+RANLIB = @RANLIB@
+REPLACE_ACCESS = @REPLACE_ACCESS@
+REPLACE_ALIGNED_ALLOC = @REPLACE_ALIGNED_ALLOC@
+REPLACE_BTOWC = @REPLACE_BTOWC@
+REPLACE_CALLOC = @REPLACE_CALLOC@
+REPLACE_CANONICALIZE_FILE_NAME = @REPLACE_CANONICALIZE_FILE_NAME@
+REPLACE_CHOWN = @REPLACE_CHOWN@
+REPLACE_CLOSE = @REPLACE_CLOSE@
+REPLACE_CLOSEDIR = @REPLACE_CLOSEDIR@
+REPLACE_CREAT = @REPLACE_CREAT@
+REPLACE_CTIME = @REPLACE_CTIME@
+REPLACE_DIRFD = @REPLACE_DIRFD@
+REPLACE_DPRINTF = @REPLACE_DPRINTF@
+REPLACE_DUP = @REPLACE_DUP@
+REPLACE_DUP2 = @REPLACE_DUP2@
+REPLACE_DUPLOCALE = @REPLACE_DUPLOCALE@
+REPLACE_EXECL = @REPLACE_EXECL@
+REPLACE_EXECLE = @REPLACE_EXECLE@
+REPLACE_EXECLP = @REPLACE_EXECLP@
+REPLACE_EXECV = @REPLACE_EXECV@
+REPLACE_EXECVE = @REPLACE_EXECVE@
+REPLACE_EXECVP = @REPLACE_EXECVP@
+REPLACE_EXECVPE = @REPLACE_EXECVPE@
+REPLACE_FACCESSAT = @REPLACE_FACCESSAT@
+REPLACE_FCHMODAT = @REPLACE_FCHMODAT@
+REPLACE_FCHOWNAT = @REPLACE_FCHOWNAT@
+REPLACE_FCLOSE = @REPLACE_FCLOSE@
+REPLACE_FCNTL = @REPLACE_FCNTL@
+REPLACE_FDOPEN = @REPLACE_FDOPEN@
+REPLACE_FDOPENDIR = @REPLACE_FDOPENDIR@
+REPLACE_FFLUSH = @REPLACE_FFLUSH@
+REPLACE_FFSLL = @REPLACE_FFSLL@
+REPLACE_FNMATCH = @REPLACE_FNMATCH@
+REPLACE_FOPEN = @REPLACE_FOPEN@
+REPLACE_FPRINTF = @REPLACE_FPRINTF@
+REPLACE_FPURGE = @REPLACE_FPURGE@
+REPLACE_FREE = @REPLACE_FREE@
+REPLACE_FREELOCALE = @REPLACE_FREELOCALE@
+REPLACE_FREOPEN = @REPLACE_FREOPEN@
+REPLACE_FSEEK = @REPLACE_FSEEK@
+REPLACE_FSEEKO = @REPLACE_FSEEKO@
+REPLACE_FSTAT = @REPLACE_FSTAT@
+REPLACE_FSTATAT = @REPLACE_FSTATAT@
+REPLACE_FTELL = @REPLACE_FTELL@
+REPLACE_FTELLO = @REPLACE_FTELLO@
+REPLACE_FTRUNCATE = @REPLACE_FTRUNCATE@
+REPLACE_FUTIMENS = @REPLACE_FUTIMENS@
+REPLACE_GETCWD = @REPLACE_GETCWD@
+REPLACE_GETDELIM = @REPLACE_GETDELIM@
+REPLACE_GETDOMAINNAME = @REPLACE_GETDOMAINNAME@
+REPLACE_GETDTABLESIZE = @REPLACE_GETDTABLESIZE@
+REPLACE_GETGROUPS = @REPLACE_GETGROUPS@
+REPLACE_GETLINE = @REPLACE_GETLINE@
+REPLACE_GETLOGIN_R = @REPLACE_GETLOGIN_R@
+REPLACE_GETPAGESIZE = @REPLACE_GETPAGESIZE@
+REPLACE_GETPASS = @REPLACE_GETPASS@
+REPLACE_GETTIMEOFDAY = @REPLACE_GETTIMEOFDAY@
+REPLACE_GMTIME = @REPLACE_GMTIME@
+REPLACE_ICONV = @REPLACE_ICONV@
+REPLACE_ICONV_OPEN = @REPLACE_ICONV_OPEN@
+REPLACE_ICONV_UTF = @REPLACE_ICONV_UTF@
+REPLACE_INET_NTOP = @REPLACE_INET_NTOP@
+REPLACE_INET_PTON = @REPLACE_INET_PTON@
+REPLACE_INITSTATE = @REPLACE_INITSTATE@
+REPLACE_IOCTL = @REPLACE_IOCTL@
+REPLACE_ISATTY = @REPLACE_ISATTY@
+REPLACE_ISWBLANK = @REPLACE_ISWBLANK@
+REPLACE_ISWCNTRL = @REPLACE_ISWCNTRL@
+REPLACE_ISWDIGIT = @REPLACE_ISWDIGIT@
+REPLACE_ISWXDIGIT = @REPLACE_ISWXDIGIT@
+REPLACE_ITOLD = @REPLACE_ITOLD@
+REPLACE_LCHOWN = @REPLACE_LCHOWN@
+REPLACE_LINK = @REPLACE_LINK@
+REPLACE_LINKAT = @REPLACE_LINKAT@
+REPLACE_LOCALECONV = @REPLACE_LOCALECONV@
+REPLACE_LOCALTIME = @REPLACE_LOCALTIME@
+REPLACE_LOCALTIME_R = @REPLACE_LOCALTIME_R@
+REPLACE_LSEEK = @REPLACE_LSEEK@
+REPLACE_LSTAT = @REPLACE_LSTAT@
+REPLACE_MALLOC = @REPLACE_MALLOC@
+REPLACE_MBRLEN = @REPLACE_MBRLEN@
+REPLACE_MBRTOWC = @REPLACE_MBRTOWC@
+REPLACE_MBSINIT = @REPLACE_MBSINIT@
+REPLACE_MBSNRTOWCS = @REPLACE_MBSNRTOWCS@
+REPLACE_MBSRTOWCS = @REPLACE_MBSRTOWCS@
+REPLACE_MBSTATE_T = @REPLACE_MBSTATE_T@
+REPLACE_MBTOWC = @REPLACE_MBTOWC@
+REPLACE_MEMCHR = @REPLACE_MEMCHR@
+REPLACE_MEMMEM = @REPLACE_MEMMEM@
+REPLACE_MKDIR = @REPLACE_MKDIR@
+REPLACE_MKFIFO = @REPLACE_MKFIFO@
+REPLACE_MKFIFOAT = @REPLACE_MKFIFOAT@
+REPLACE_MKNOD = @REPLACE_MKNOD@
+REPLACE_MKNODAT = @REPLACE_MKNODAT@
+REPLACE_MKSTEMP = @REPLACE_MKSTEMP@
+REPLACE_MKTIME = @REPLACE_MKTIME@
+REPLACE_NANOSLEEP = @REPLACE_NANOSLEEP@
+REPLACE_NEWLOCALE = @REPLACE_NEWLOCALE@
+REPLACE_NL_LANGINFO = @REPLACE_NL_LANGINFO@
+REPLACE_NULL = @REPLACE_NULL@
+REPLACE_OBSTACK_PRINTF = @REPLACE_OBSTACK_PRINTF@
+REPLACE_OPEN = @REPLACE_OPEN@
+REPLACE_OPENAT = @REPLACE_OPENAT@
+REPLACE_OPENDIR = @REPLACE_OPENDIR@
+REPLACE_PERROR = @REPLACE_PERROR@
+REPLACE_POPEN = @REPLACE_POPEN@
+REPLACE_POSIX_MEMALIGN = @REPLACE_POSIX_MEMALIGN@
+REPLACE_PREAD = @REPLACE_PREAD@
+REPLACE_PRINTF = @REPLACE_PRINTF@
+REPLACE_PSELECT = @REPLACE_PSELECT@
+REPLACE_PTHREAD_ATTR_DESTROY = @REPLACE_PTHREAD_ATTR_DESTROY@
+REPLACE_PTHREAD_ATTR_GETDETACHSTATE = @REPLACE_PTHREAD_ATTR_GETDETACHSTATE@
+REPLACE_PTHREAD_ATTR_INIT = @REPLACE_PTHREAD_ATTR_INIT@
+REPLACE_PTHREAD_ATTR_SETDETACHSTATE = @REPLACE_PTHREAD_ATTR_SETDETACHSTATE@
+REPLACE_PTHREAD_CONDATTR_DESTROY = @REPLACE_PTHREAD_CONDATTR_DESTROY@
+REPLACE_PTHREAD_CONDATTR_INIT = @REPLACE_PTHREAD_CONDATTR_INIT@
+REPLACE_PTHREAD_COND_BROADCAST = @REPLACE_PTHREAD_COND_BROADCAST@
+REPLACE_PTHREAD_COND_DESTROY = @REPLACE_PTHREAD_COND_DESTROY@
+REPLACE_PTHREAD_COND_INIT = @REPLACE_PTHREAD_COND_INIT@
+REPLACE_PTHREAD_COND_SIGNAL = @REPLACE_PTHREAD_COND_SIGNAL@
+REPLACE_PTHREAD_COND_TIMEDWAIT = @REPLACE_PTHREAD_COND_TIMEDWAIT@
+REPLACE_PTHREAD_COND_WAIT = @REPLACE_PTHREAD_COND_WAIT@
+REPLACE_PTHREAD_CREATE = @REPLACE_PTHREAD_CREATE@
+REPLACE_PTHREAD_DETACH = @REPLACE_PTHREAD_DETACH@
+REPLACE_PTHREAD_EQUAL = @REPLACE_PTHREAD_EQUAL@
+REPLACE_PTHREAD_EXIT = @REPLACE_PTHREAD_EXIT@
+REPLACE_PTHREAD_GETSPECIFIC = @REPLACE_PTHREAD_GETSPECIFIC@
+REPLACE_PTHREAD_JOIN = @REPLACE_PTHREAD_JOIN@
+REPLACE_PTHREAD_KEY_CREATE = @REPLACE_PTHREAD_KEY_CREATE@
+REPLACE_PTHREAD_KEY_DELETE = @REPLACE_PTHREAD_KEY_DELETE@
+REPLACE_PTHREAD_MUTEXATTR_DESTROY = @REPLACE_PTHREAD_MUTEXATTR_DESTROY@
+REPLACE_PTHREAD_MUTEXATTR_GETROBUST = @REPLACE_PTHREAD_MUTEXATTR_GETROBUST@
+REPLACE_PTHREAD_MUTEXATTR_GETTYPE = @REPLACE_PTHREAD_MUTEXATTR_GETTYPE@
+REPLACE_PTHREAD_MUTEXATTR_INIT = @REPLACE_PTHREAD_MUTEXATTR_INIT@
+REPLACE_PTHREAD_MUTEXATTR_SETROBUST = @REPLACE_PTHREAD_MUTEXATTR_SETROBUST@
+REPLACE_PTHREAD_MUTEXATTR_SETTYPE = @REPLACE_PTHREAD_MUTEXATTR_SETTYPE@
+REPLACE_PTHREAD_MUTEX_DESTROY = @REPLACE_PTHREAD_MUTEX_DESTROY@
+REPLACE_PTHREAD_MUTEX_INIT = @REPLACE_PTHREAD_MUTEX_INIT@
+REPLACE_PTHREAD_MUTEX_LOCK = @REPLACE_PTHREAD_MUTEX_LOCK@
+REPLACE_PTHREAD_MUTEX_TIMEDLOCK = @REPLACE_PTHREAD_MUTEX_TIMEDLOCK@
+REPLACE_PTHREAD_MUTEX_TRYLOCK = @REPLACE_PTHREAD_MUTEX_TRYLOCK@
+REPLACE_PTHREAD_MUTEX_UNLOCK = @REPLACE_PTHREAD_MUTEX_UNLOCK@
+REPLACE_PTHREAD_ONCE = @REPLACE_PTHREAD_ONCE@
+REPLACE_PTHREAD_RWLOCKATTR_DESTROY = @REPLACE_PTHREAD_RWLOCKATTR_DESTROY@
+REPLACE_PTHREAD_RWLOCKATTR_INIT = @REPLACE_PTHREAD_RWLOCKATTR_INIT@
+REPLACE_PTHREAD_RWLOCK_DESTROY = @REPLACE_PTHREAD_RWLOCK_DESTROY@
+REPLACE_PTHREAD_RWLOCK_INIT = @REPLACE_PTHREAD_RWLOCK_INIT@
+REPLACE_PTHREAD_RWLOCK_RDLOCK = @REPLACE_PTHREAD_RWLOCK_RDLOCK@
+REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK = @REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK = @REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+REPLACE_PTHREAD_RWLOCK_TRYRDLOCK = @REPLACE_PTHREAD_RWLOCK_TRYRDLOCK@
+REPLACE_PTHREAD_RWLOCK_TRYWRLOCK = @REPLACE_PTHREAD_RWLOCK_TRYWRLOCK@
+REPLACE_PTHREAD_RWLOCK_UNLOCK = @REPLACE_PTHREAD_RWLOCK_UNLOCK@
+REPLACE_PTHREAD_RWLOCK_WRLOCK = @REPLACE_PTHREAD_RWLOCK_WRLOCK@
+REPLACE_PTHREAD_SELF = @REPLACE_PTHREAD_SELF@
+REPLACE_PTHREAD_SETSPECIFIC = @REPLACE_PTHREAD_SETSPECIFIC@
+REPLACE_PTHREAD_SIGMASK = @REPLACE_PTHREAD_SIGMASK@
+REPLACE_PTHREAD_SPIN_DESTROY = @REPLACE_PTHREAD_SPIN_DESTROY@
+REPLACE_PTHREAD_SPIN_INIT = @REPLACE_PTHREAD_SPIN_INIT@
+REPLACE_PTHREAD_SPIN_LOCK = @REPLACE_PTHREAD_SPIN_LOCK@
+REPLACE_PTHREAD_SPIN_TRYLOCK = @REPLACE_PTHREAD_SPIN_TRYLOCK@
+REPLACE_PTHREAD_SPIN_UNLOCK = @REPLACE_PTHREAD_SPIN_UNLOCK@
+REPLACE_PTSNAME = @REPLACE_PTSNAME@
+REPLACE_PTSNAME_R = @REPLACE_PTSNAME_R@
+REPLACE_PUTENV = @REPLACE_PUTENV@
+REPLACE_PWRITE = @REPLACE_PWRITE@
+REPLACE_QSORT_R = @REPLACE_QSORT_R@
+REPLACE_RAISE = @REPLACE_RAISE@
+REPLACE_RANDOM = @REPLACE_RANDOM@
+REPLACE_RANDOM_R = @REPLACE_RANDOM_R@
+REPLACE_READ = @REPLACE_READ@
+REPLACE_READLINK = @REPLACE_READLINK@
+REPLACE_READLINKAT = @REPLACE_READLINKAT@
+REPLACE_REALLOC = @REPLACE_REALLOC@
+REPLACE_REALLOCARRAY = @REPLACE_REALLOCARRAY@
+REPLACE_REALPATH = @REPLACE_REALPATH@
+REPLACE_REMOVE = @REPLACE_REMOVE@
+REPLACE_RENAME = @REPLACE_RENAME@
+REPLACE_RENAMEAT = @REPLACE_RENAMEAT@
+REPLACE_RMDIR = @REPLACE_RMDIR@
+REPLACE_SCHED_YIELD = @REPLACE_SCHED_YIELD@
+REPLACE_SELECT = @REPLACE_SELECT@
+REPLACE_SETENV = @REPLACE_SETENV@
+REPLACE_SETLOCALE = @REPLACE_SETLOCALE@
+REPLACE_SETSTATE = @REPLACE_SETSTATE@
+REPLACE_SLEEP = @REPLACE_SLEEP@
+REPLACE_SNPRINTF = @REPLACE_SNPRINTF@
+REPLACE_SPRINTF = @REPLACE_SPRINTF@
+REPLACE_STAT = @REPLACE_STAT@
+REPLACE_STDIO_READ_FUNCS = @REPLACE_STDIO_READ_FUNCS@
+REPLACE_STDIO_WRITE_FUNCS = @REPLACE_STDIO_WRITE_FUNCS@
+REPLACE_STPNCPY = @REPLACE_STPNCPY@
+REPLACE_STRCASESTR = @REPLACE_STRCASESTR@
+REPLACE_STRCHRNUL = @REPLACE_STRCHRNUL@
+REPLACE_STRDUP = @REPLACE_STRDUP@
+REPLACE_STRERROR = @REPLACE_STRERROR@
+REPLACE_STRERRORNAME_NP = @REPLACE_STRERRORNAME_NP@
+REPLACE_STRERROR_R = @REPLACE_STRERROR_R@
+REPLACE_STRFTIME = @REPLACE_STRFTIME@
+REPLACE_STRNCAT = @REPLACE_STRNCAT@
+REPLACE_STRNDUP = @REPLACE_STRNDUP@
+REPLACE_STRNLEN = @REPLACE_STRNLEN@
+REPLACE_STRSIGNAL = @REPLACE_STRSIGNAL@
+REPLACE_STRSTR = @REPLACE_STRSTR@
+REPLACE_STRTOD = @REPLACE_STRTOD@
+REPLACE_STRTOIMAX = @REPLACE_STRTOIMAX@
+REPLACE_STRTOK_R = @REPLACE_STRTOK_R@
+REPLACE_STRTOL = @REPLACE_STRTOL@
+REPLACE_STRTOLD = @REPLACE_STRTOLD@
+REPLACE_STRTOLL = @REPLACE_STRTOLL@
+REPLACE_STRTOUL = @REPLACE_STRTOUL@
+REPLACE_STRTOULL = @REPLACE_STRTOULL@
+REPLACE_STRTOUMAX = @REPLACE_STRTOUMAX@
+REPLACE_STRUCT_LCONV = @REPLACE_STRUCT_LCONV@
+REPLACE_STRUCT_TIMEVAL = @REPLACE_STRUCT_TIMEVAL@
+REPLACE_SYMLINK = @REPLACE_SYMLINK@
+REPLACE_SYMLINKAT = @REPLACE_SYMLINKAT@
+REPLACE_TIMEGM = @REPLACE_TIMEGM@
+REPLACE_TMPFILE = @REPLACE_TMPFILE@
+REPLACE_TOWLOWER = @REPLACE_TOWLOWER@
+REPLACE_TRUNCATE = @REPLACE_TRUNCATE@
+REPLACE_TTYNAME_R = @REPLACE_TTYNAME_R@
+REPLACE_TZSET = @REPLACE_TZSET@
+REPLACE_UNLINK = @REPLACE_UNLINK@
+REPLACE_UNLINKAT = @REPLACE_UNLINKAT@
+REPLACE_UNSETENV = @REPLACE_UNSETENV@
+REPLACE_USLEEP = @REPLACE_USLEEP@
+REPLACE_UTIMENSAT = @REPLACE_UTIMENSAT@
+REPLACE_VASPRINTF = @REPLACE_VASPRINTF@
+REPLACE_VDPRINTF = @REPLACE_VDPRINTF@
+REPLACE_VFPRINTF = @REPLACE_VFPRINTF@
+REPLACE_VPRINTF = @REPLACE_VPRINTF@
+REPLACE_VSNPRINTF = @REPLACE_VSNPRINTF@
+REPLACE_VSPRINTF = @REPLACE_VSPRINTF@
+REPLACE_WCRTOMB = @REPLACE_WCRTOMB@
+REPLACE_WCSFTIME = @REPLACE_WCSFTIME@
+REPLACE_WCSNRTOMBS = @REPLACE_WCSNRTOMBS@
+REPLACE_WCSRTOMBS = @REPLACE_WCSRTOMBS@
+REPLACE_WCSTOK = @REPLACE_WCSTOK@
+REPLACE_WCSWIDTH = @REPLACE_WCSWIDTH@
+REPLACE_WCTOB = @REPLACE_WCTOB@
+REPLACE_WCTOMB = @REPLACE_WCTOMB@
+REPLACE_WCWIDTH = @REPLACE_WCWIDTH@
+REPLACE_WRITE = @REPLACE_WRITE@
+SED = @SED@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+SIGSEGV_H = @SIGSEGV_H@
+SIG_ATOMIC_T_SUFFIX = @SIG_ATOMIC_T_SUFFIX@
+SIZE_T_SUFFIX = @SIZE_T_SUFFIX@
+STDALIGN_H = @STDALIGN_H@
+STDARG_H = @STDARG_H@
+STDBOOL_H = @STDBOOL_H@
+STDDEF_H = @STDDEF_H@
+STDINT_H = @STDINT_H@
+STRIP = @STRIP@
+SYS_IOCTL_H_HAVE_WINSOCK2_H = @SYS_IOCTL_H_HAVE_WINSOCK2_H@
+SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS = @SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+SYS_TIME_H_DEFINES_STRUCT_TIMESPEC = @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
+TIME_H_DEFINES_STRUCT_TIMESPEC = @TIME_H_DEFINES_STRUCT_TIMESPEC@
+TIME_H_DEFINES_TIME_UTC = @TIME_H_DEFINES_TIME_UTC@
+UINT32_MAX_LT_UINTMAX_MAX = @UINT32_MAX_LT_UINTMAX_MAX@
+UINT64_MAX_EQ_ULONG_MAX = @UINT64_MAX_EQ_ULONG_MAX@
+UNDEFINE_STRTOK_R = @UNDEFINE_STRTOK_R@
+UNISTD_H_DEFINES_STRUCT_TIMESPEC = @UNISTD_H_DEFINES_STRUCT_TIMESPEC@
+UNISTD_H_HAVE_SYS_RANDOM_H = @UNISTD_H_HAVE_SYS_RANDOM_H@
+UNISTD_H_HAVE_WINSOCK2_H = @UNISTD_H_HAVE_WINSOCK2_H@
+UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS = @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+USE_NLS = @USE_NLS@
+VERSION = @VERSION@
+WARN_CFLAGS = @WARN_CFLAGS@
+WCHAR_T_SUFFIX = @WCHAR_T_SUFFIX@
+WERROR_CFLAGS = @WERROR_CFLAGS@
+WINDOWS_64_BIT_OFF_T = @WINDOWS_64_BIT_OFF_T@
+WINDOWS_64_BIT_ST_SIZE = @WINDOWS_64_BIT_ST_SIZE@
+WINDOWS_STAT_INODES = @WINDOWS_STAT_INODES@
+WINDOWS_STAT_TIMESPEC = @WINDOWS_STAT_TIMESPEC@
+WINT_T_SUFFIX = @WINT_T_SUFFIX@
+XGETTEXT = @XGETTEXT@
+XGETTEXT_015 = @XGETTEXT_015@
+XGETTEXT_EXTRA_OPTIONS = @XGETTEXT_EXTRA_OPTIONS@
+abs_aux_dir = @abs_aux_dir@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
+ac_ct_CC = @ac_ct_CC@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+builddir = @builddir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+gl_LIBOBJS = @gl_LIBOBJS@
+gl_LTLIBOBJS = @gl_LTLIBOBJS@
+gltests_LIBOBJS = @gltests_LIBOBJS@
+gltests_LTLIBOBJS = @gltests_LTLIBOBJS@
+gltests_WITNESS = @gltests_WITNESS@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libdir = @libdir@
+libexecdir = @libexecdir@
+lispdir = @lispdir@
+localedir = $(datadir)/locale
+localstatedir = @localstatedir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+runstatedir = @runstatedir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+LN = ln
+AM_CFLAGS = $(WARN_CFLAGS) $(WERROR_CFLAGS) $(PCRE_CFLAGS)
+
+# Tell the linker to omit references to unused shared libraries.
+AM_LDFLAGS = $(IGNORE_UNUSED_LIBRARIES_CFLAGS)
+bin_SCRIPTS = egrep fgrep
+grep_SOURCES = dfasearch.c die.h grep.c kwsearch.c kwset.c \
+	searchutils.c $(am__append_1)
+noinst_HEADERS = grep.h kwset.h search.h system.h
+
+# Sometimes, the expansion of $(LIBINTL) includes -lc which may
+# include modules defining variables like 'optind', so libgreputils.a
+# must precede $(LIBINTL) in order to ensure we use GNU getopt.
+# But libgreputils.a must also follow $(LIBINTL), since libintl uses
+# replacement functions defined in libgreputils.a.
+LDADD = \
+  ../lib/libgreputils.a $(LIBINTL) ../lib/libgreputils.a $(LIBICONV) \
+  $(LIBTHREAD)
+
+grep_LDADD = $(LDADD) $(PCRE_LIBS) $(LIBCSTACK)
+AM_CPPFLAGS = -I$(top_builddir)/lib -I$(top_srcdir)/lib
+EXTRA_DIST = egrep.sh
+CLEANFILES = egrep fgrep *-t
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .o .obj
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu src/Makefile'; \
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+	  $(AUTOMAKE) --gnu src/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
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+	esac;
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+	sed 's/$(EXEEXT)$$//' | \
+	while read p p1; do if test -f $$p \
+	  ; then echo "$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n;h' \
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+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1 } \
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+	while read type dir files; do \
+	    if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
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+	      echo " $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files '$(DESTDIR)$(bindir)$$dir'"; \
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+	; done
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+	fi; \
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+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n' \
+	    -e 'h;s|.*|.|' \
+	    -e 'p;x;s,.*/,,;$(transform)' | sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1; } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
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+	      if (++n[d] == $(am__install_max)) { \
+		print "f", d, files[d]; n[d] = 0; files[d] = "" } } \
+	    else { print "f", d "/" $$4, $$1 } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	     test -z "$$files" || { \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(bindir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(bindir)$$dir" || exit $$?; \
+	     } \
+	; done
+
+uninstall-binSCRIPTS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(bin_SCRIPTS)'; test -n "$(bindir)" || exit 0; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	       sed -e 's,.*/,,;$(transform)'`; \
+	dir='$(DESTDIR)$(bindir)'; $(am__uninstall_files_from_dir)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/dfasearch.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/grep.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/kwsearch.Po@am__quote@ # am--include-marker
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+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/searchutils.Po@am__quote@ # am--include-marker
+
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+	      $$unique; \
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+	fi
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+
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+	     $$unique
+
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+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
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+
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+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
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+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
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+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
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+clean: clean-am
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+distclean: distclean-am
+		-rm -f ./$(DEPDIR)/dfasearch.Po
+	-rm -f ./$(DEPDIR)/grep.Po
+	-rm -f ./$(DEPDIR)/kwsearch.Po
+	-rm -f ./$(DEPDIR)/kwset.Po
+	-rm -f ./$(DEPDIR)/pcresearch.Po
+	-rm -f ./$(DEPDIR)/searchutils.Po
+	-rm -f Makefile
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+	distclean-tags
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+		-rm -f ./$(DEPDIR)/dfasearch.Po
+	-rm -f ./$(DEPDIR)/grep.Po
+	-rm -f ./$(DEPDIR)/kwsearch.Po
+	-rm -f ./$(DEPDIR)/kwset.Po
+	-rm -f ./$(DEPDIR)/pcresearch.Po
+	-rm -f ./$(DEPDIR)/searchutils.Po
+	-rm -f Makefile
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+.MAKE: install-am install-strip
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+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-binPROGRAMS clean-generic cscopelist-am ctags ctags-am \
+	distclean distclean-compile distclean-generic distclean-tags \
+	distdir dvi dvi-am html html-am info info-am install \
+	install-am install-binPROGRAMS install-binSCRIPTS install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
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+	mostlyclean-generic pdf pdf-am ps ps-am tags tags-am uninstall \
+	uninstall-am uninstall-binPROGRAMS uninstall-binSCRIPTS
+
+.PRECIOUS: Makefile
+
+
+egrep fgrep: egrep.sh Makefile
+	$(AM_V_GEN)grep=`echo grep | sed -e '$(transform)'` &&		\
+	case $@ in egrep) option=-E;; fgrep) option=-F;; esac &&	\
+	shell_does_substrings='set x/y && d=$${1%/*} && test "$$d" = x' && \
+	if $(SHELL) -c "$$shell_does_substrings" 2>/dev/null; then	\
+	  edit_substring='s,X,X,';					\
+	else								\
+	  edit_substring='s,\$${0%/\*},`expr "X$$0" : '\''X\\(.*\\)/'\''`,g'; \
+	fi &&								\
+	sed -e 's|[@]SHELL@|$(SHELL)|g'					\
+	    -e "$$edit_substring"					\
+	    -e "s|[@]grep@|$$grep|g"					\
+	    -e "s|[@]option@|$$option|g" <$(srcdir)/egrep.sh >$@-t
+	$(AM_V_at)chmod +x $@-t
+	$(AM_V_at)mv $@-t $@
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/grep/src/dfasearch.c b/src/grep/src/dfasearch.c
new file mode 100644
index 0000000..d6afa8d
--- /dev/null
+++ b/src/grep/src/dfasearch.c
@@ -0,0 +1,590 @@
+/* dfasearch.c - searching subroutines using dfa and regex for grep.
+   Copyright 1992, 1998, 2000, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+/* Written August 1992 by Mike Haertel. */
+
+#include <config.h>
+#include "intprops.h"
+#include "search.h"
+#include "die.h"
+#include <error.h>
+
+struct dfa_comp
+{
+  /* KWset compiled pattern.  For GEAcompile, we compile
+     a list of strings, at least one of which is known to occur in
+     any string matching the regexp. */
+  kwset_t kwset;
+
+  /* DFA compiled regexp. */
+  struct dfa *dfa;
+
+  /* Regex compiled regexps. */
+  struct re_pattern_buffer *patterns;
+  size_t pcount;
+  struct re_registers regs;
+
+  /* Number of compiled fixed strings known to exactly match the regexp.
+     If kwsexec returns < kwset_exact_matches, then we don't need to
+     call the regexp matcher at all. */
+  ptrdiff_t kwset_exact_matches;
+
+  bool begline;
+};
+
+void
+dfaerror (char const *mesg)
+{
+  die (EXIT_TROUBLE, 0, "%s", mesg);
+}
+
+/* For now, the sole dfawarn-eliciting condition (use of a regexp
+   like '[:lower:]') is unequivocally an error, so treat it as such,
+   when possible.  */
+void
+dfawarn (char const *mesg)
+{
+  if (!getenv ("POSIXLY_CORRECT"))
+    dfaerror (mesg);
+}
+
+/* If the DFA turns out to have some set of fixed strings one of
+   which must occur in the match, then we build a kwset matcher
+   to find those strings, and thus quickly filter out impossible
+   matches. */
+static void
+kwsmusts (struct dfa_comp *dc)
+{
+  struct dfamust *dm = dfamust (dc->dfa);
+  if (!dm)
+    return;
+  dc->kwset = kwsinit (false);
+  if (dm->exact)
+    {
+      /* Prepare a substring whose presence implies a match.
+         The kwset matcher will return the index of the matching
+         string that it chooses. */
+      ++dc->kwset_exact_matches;
+      ptrdiff_t old_len = strlen (dm->must);
+      ptrdiff_t new_len = old_len + dm->begline + dm->endline;
+      char *must = xmalloc (new_len);
+      char *mp = must;
+      *mp = eolbyte;
+      mp += dm->begline;
+      dc->begline |= dm->begline;
+      memcpy (mp, dm->must, old_len);
+      if (dm->endline)
+        mp[old_len] = eolbyte;
+      kwsincr (dc->kwset, must, new_len);
+      free (must);
+    }
+  else
+    {
+      /* Otherwise, filtering with this substring should help reduce the
+         search space, but we'll still have to use the regexp matcher.  */
+      kwsincr (dc->kwset, dm->must, strlen (dm->must));
+    }
+  kwsprep (dc->kwset);
+  dfamustfree (dm);
+}
+
+/* Return true if KEYS, of length LEN, might contain a back-reference.
+   Return false if KEYS cannot contain a back-reference.
+   BS_SAFE is true of encodings where a backslash cannot appear as the
+   last byte of a multibyte character.  */
+static bool _GL_ATTRIBUTE_PURE
+possible_backrefs_in_pattern (char const *keys, ptrdiff_t len, bool bs_safe)
+{
+  /* Normally a backslash, but in an unsafe encoding this is a non-char
+     value so that the comparison below always fails, because if there
+     are two adjacent '\' bytes, the first might be the last byte of a
+     multibyte character.  */
+  int second_backslash = bs_safe ? '\\' : CHAR_MAX + 1;
+
+  /* This code can return true even if KEYS lacks a back-reference, for
+     patterns like [\2], or for encodings where '\' appears as the last
+     byte of a multibyte character.  However, false alarms should be
+     rare and do not affect correctness.  */
+
+  /* Do not look for a backslash in the pattern's last byte, since it
+     can't be part of a back-reference and this streamlines the code.  */
+  len--;
+
+  if (0 <= len)
+    {
+      char const *lim = keys + len;
+      for (char const *p = keys; (p = memchr (p, '\\', lim - p)); p++)
+        {
+          if ('1' <= p[1] && p[1] <= '9')
+            return true;
+          if (p[1] == second_backslash)
+            {
+              p++;
+              if (p == lim)
+                break;
+            }
+        }
+    }
+  return false;
+}
+
+static bool
+regex_compile (struct dfa_comp *dc, char const *p, ptrdiff_t len,
+               ptrdiff_t pcount, ptrdiff_t lineno, reg_syntax_t syntax_bits,
+               bool syntax_only)
+{
+  struct re_pattern_buffer pat0;
+  struct re_pattern_buffer *pat = syntax_only ? &pat0 : &dc->patterns[pcount];
+  pat->buffer = NULL;
+  pat->allocated = 0;
+
+  /* Do not use a fastmap with -i, to work around glibc Bug#20381.  */
+  pat->fastmap = (syntax_only | match_icase) ? NULL : xmalloc (UCHAR_MAX + 1);
+
+  pat->translate = NULL;
+
+  if (syntax_only)
+    re_set_syntax (syntax_bits | RE_NO_SUB);
+  else
+    re_set_syntax (syntax_bits);
+
+  char const *err = re_compile_pattern (p, len, pat);
+  if (!err)
+    return true;
+
+  /* Emit a filename:lineno: prefix for patterns taken from files.  */
+  size_t pat_lineno;
+  char const *pat_filename
+    = lineno < 0 ? "" : pattern_file_name (lineno, &pat_lineno);
+
+  if (*pat_filename == '\0')
+    error (0, 0, "%s", err);
+  else
+    error (0, 0, "%s:%zu: %s", pat_filename, pat_lineno, err);
+
+  return false;
+}
+
+/* Compile PATTERN, containing SIZE bytes that are followed by '\n'.
+   SYNTAX_BITS specifies whether PATTERN uses style -G, -E, or -A.
+   Return a description of the compiled pattern.  */
+
+void *
+GEAcompile (char *pattern, size_t size, reg_syntax_t syntax_bits,
+            bool exact)
+{
+  char *motif;
+  struct dfa_comp *dc = xcalloc (1, sizeof (*dc));
+
+  dc->dfa = dfaalloc ();
+
+  if (match_icase)
+    syntax_bits |= RE_ICASE;
+  int dfaopts = eolbyte ? 0 : DFA_EOL_NUL;
+  dfasyntax (dc->dfa, &localeinfo, syntax_bits, dfaopts);
+  bool bs_safe = !localeinfo.multibyte | localeinfo.using_utf8;
+
+  /* For GNU regex, pass the patterns separately to detect errors like
+     "[\nallo\n]\n", where the patterns are "[", "allo" and "]", and
+     this should be a syntax error.  The same for backref, where the
+     backref should be local to each pattern.  */
+  char const *p = pattern;
+  char const *patlim = pattern + size;
+  bool compilation_failed = false;
+
+  dc->patterns = xmalloc (sizeof *dc->patterns);
+  dc->patterns++;
+  dc->pcount = 0;
+  size_t palloc = 1;
+
+  char const *prev = pattern;
+
+  /* Buffer containing back-reference-free patterns.  */
+  char *buf = NULL;
+  ptrdiff_t buflen = 0;
+  size_t bufalloc = 0;
+
+  ptrdiff_t lineno = 0;
+
+  do
+    {
+      char const *sep = rawmemchr (p, '\n');
+      ptrdiff_t len = sep - p;
+
+      bool backref = possible_backrefs_in_pattern (p, len, bs_safe);
+
+      if (backref && prev < p)
+        {
+          ptrdiff_t prevlen = p - prev;
+          while (bufalloc < buflen + prevlen)
+            buf = x2realloc (buf, &bufalloc);
+          memcpy (buf + buflen, prev, prevlen);
+          buflen += prevlen;
+        }
+
+      /* Ensure room for at least two more patterns.  The extra one is
+         for the regex_compile that may be executed after this loop
+         exits, and its (unused) slot is patterns[-1] until then.  */
+      while (palloc <= dc->pcount + 1)
+        {
+          dc->patterns = x2nrealloc (dc->patterns - 1, &palloc,
+                                     sizeof *dc->patterns);
+          dc->patterns++;
+        }
+
+      re_set_syntax (syntax_bits);
+
+      if (!regex_compile (dc, p, len, dc->pcount, lineno, syntax_bits,
+                          !backref))
+        compilation_failed = true;
+
+      p = sep + 1;
+      lineno++;
+
+      if (backref)
+        {
+          dc->pcount++;
+          prev = p;
+        }
+    }
+  while (p <= patlim);
+
+  if (compilation_failed)
+    exit (EXIT_TROUBLE);
+
+  if (prev <= patlim)
+    {
+      if (pattern < prev)
+        {
+          ptrdiff_t prevlen = patlim - prev;
+          buf = xrealloc (buf, buflen + prevlen);
+          memcpy (buf + buflen, prev, prevlen);
+          buflen += prevlen;
+        }
+      else
+        {
+          buf = pattern;
+          buflen = size;
+        }
+    }
+
+  /* In the match_words and match_lines cases, we use a different pattern
+     for the DFA matcher that will quickly throw out cases that won't work.
+     Then if DFA succeeds we do some hairy stuff using the regex matcher
+     to decide whether the match should really count. */
+  if (match_words || match_lines)
+    {
+      static char const line_beg_no_bk[] = "^(";
+      static char const line_end_no_bk[] = ")$";
+      static char const word_beg_no_bk[] = "(^|[^[:alnum:]_])(";
+      static char const word_end_no_bk[] = ")([^[:alnum:]_]|$)";
+      static char const line_beg_bk[] = "^\\(";
+      static char const line_end_bk[] = "\\)$";
+      static char const word_beg_bk[] = "\\(^\\|[^[:alnum:]_]\\)\\(";
+      static char const word_end_bk[] = "\\)\\([^[:alnum:]_]\\|$\\)";
+      int bk = !(syntax_bits & RE_NO_BK_PARENS);
+      char *n = xmalloc (sizeof word_beg_bk - 1 + size + sizeof word_end_bk);
+
+      strcpy (n, match_lines ? (bk ? line_beg_bk : line_beg_no_bk)
+                             : (bk ? word_beg_bk : word_beg_no_bk));
+      size_t total = strlen (n);
+      memcpy (n + total, pattern, size);
+      total += size;
+      strcpy (n + total, match_lines ? (bk ? line_end_bk : line_end_no_bk)
+                                     : (bk ? word_end_bk : word_end_no_bk));
+      total += strlen (n + total);
+      pattern = motif = n;
+      size = total;
+    }
+  else
+    motif = NULL;
+
+  dfaparse (pattern, size, dc->dfa);
+  kwsmusts (dc);
+  dfacomp (NULL, 0, dc->dfa, 1);
+
+  if (buf != NULL)
+    {
+      if (exact || !dfasupported (dc->dfa))
+        {
+          dc->patterns--;
+          dc->pcount++;
+
+          if (!regex_compile (dc, buf, buflen, 0, -1, syntax_bits, false))
+            abort ();
+        }
+
+      if (buf != pattern)
+        free (buf);
+    }
+
+  free (motif);
+
+  return dc;
+}
+
+size_t
+EGexecute (void *vdc, char const *buf, size_t size, size_t *match_size,
+           char const *start_ptr)
+{
+  char const *buflim, *beg, *end, *ptr, *match, *best_match, *mb_start;
+  char eol = eolbyte;
+  regoff_t start;
+  size_t len, best_len;
+  struct kwsmatch kwsm;
+  size_t i;
+  struct dfa_comp *dc = vdc;
+  struct dfa *superset = dfasuperset (dc->dfa);
+  bool dfafast = dfaisfast (dc->dfa);
+
+  mb_start = buf;
+  buflim = buf + size;
+
+  for (beg = end = buf; end < buflim; beg = end)
+    {
+      end = buflim;
+
+      if (!start_ptr)
+        {
+          char const *next_beg, *dfa_beg = beg;
+          ptrdiff_t count = 0;
+          bool exact_kwset_match = false;
+          bool backref = false;
+
+          /* Try matching with KWset, if it's defined.  */
+          if (dc->kwset)
+            {
+              char const *prev_beg;
+
+              /* Find a possible match using the KWset matcher.  */
+              ptrdiff_t offset = kwsexec (dc->kwset, beg - dc->begline,
+                                          buflim - beg + dc->begline,
+                                          &kwsm, true);
+              if (offset < 0)
+                return offset;
+              match = beg + offset;
+              prev_beg = beg;
+
+              /* Narrow down to the line containing the possible match.  */
+              beg = memrchr (buf, eol, match - buf);
+              beg = beg ? beg + 1 : buf;
+              dfa_beg = beg;
+
+              /* Determine the end pointer to give the DFA next.  Typically
+                 this is after the first newline after MATCH; but if the KWset
+                 match is not exact, the DFA is fast, and the offset from
+                 PREV_BEG is less than 64 or (MATCH - PREV_BEG), this is the
+                 greater of the latter two values; this temporarily prefers
+                 the DFA to KWset.  */
+              exact_kwset_match = kwsm.index < dc->kwset_exact_matches;
+              if (exact_kwset_match || !dfafast
+                  || MAX (16, match - beg) < (match - prev_beg) >> 2)
+                {
+                  end = rawmemchr (match, eol);
+                  end++;
+                }
+              else if (MAX (16, match - beg) < (buflim - prev_beg) >> 2)
+                {
+                  end = rawmemchr (prev_beg + 4 * MAX (16, match - beg), eol);
+                  end++;
+                }
+              else
+                end = buflim;
+
+              if (exact_kwset_match)
+                {
+                  if (!localeinfo.multibyte | localeinfo.using_utf8)
+                    goto success;
+                  if (mb_start < beg)
+                    mb_start = beg;
+                  if (mb_goback (&mb_start, NULL, match, buflim) == 0)
+                    goto success;
+                  /* The matched line starts in the middle of a multibyte
+                     character.  Perform the DFA search starting from the
+                     beginning of the next character.  */
+                  dfa_beg = mb_start;
+                }
+            }
+
+          /* Try matching with the superset of DFA, if it's defined.  */
+          if (superset && !exact_kwset_match)
+            {
+              /* Keep using the superset while it reports multiline
+                 potential matches; this is more likely to be fast
+                 than falling back to KWset would be.  */
+              next_beg = dfaexec (superset, dfa_beg, (char *) end, 0,
+                                  &count, NULL);
+              if (next_beg == NULL || next_beg == end)
+                continue;
+
+              /* Narrow down to the line we've found.  */
+              if (count != 0)
+                {
+                  beg = memrchr (buf, eol, next_beg - buf);
+                  beg++;
+                  dfa_beg = beg;
+                }
+              end = rawmemchr (next_beg, eol);
+              end++;
+
+              count = 0;
+            }
+
+          /* Try matching with DFA.  */
+          next_beg = dfaexec (dc->dfa, dfa_beg, (char *) end, 0, &count,
+                              &backref);
+
+          /* If there's no match, or if we've matched the sentinel,
+             we're done.  */
+          if (next_beg == NULL || next_beg == end)
+            continue;
+
+          /* Narrow down to the line we've found.  */
+          if (count != 0)
+            {
+              beg = memrchr (buf, eol, next_beg - buf);
+              beg++;
+            }
+          end = rawmemchr (next_beg, eol);
+          end++;
+
+          /* Successful, no back-references encountered! */
+          if (!backref)
+            goto success;
+          ptr = beg;
+        }
+      else
+        {
+          /* We are looking for the leftmost (then longest) exact match.
+             We will go through the outer loop only once.  */
+          ptr = start_ptr;
+        }
+
+      /* If the "line" is longer than the maximum regexp offset,
+         die as if we've run out of memory.  */
+      if (TYPE_MAXIMUM (regoff_t) < end - beg - 1)
+        xalloc_die ();
+
+      /* Run the possible match through Regex.  */
+      best_match = end;
+      best_len = 0;
+      for (i = 0; i < dc->pcount; i++)
+        {
+          dc->patterns[i].not_eol = 0;
+          dc->patterns[i].newline_anchor = eolbyte == '\n';
+          start = re_search (&dc->patterns[i], beg, end - beg - 1,
+                             ptr - beg, end - ptr - 1, &dc->regs);
+          if (start < -1)
+            xalloc_die ();
+          else if (0 <= start)
+            {
+              len = dc->regs.end[0] - start;
+              match = beg + start;
+              if (match > best_match)
+                continue;
+              if (start_ptr && !match_words)
+                goto assess_pattern_match;
+              if ((!match_lines && !match_words)
+                  || (match_lines && len == end - ptr - 1))
+                {
+                  match = ptr;
+                  len = end - ptr;
+                  goto assess_pattern_match;
+                }
+              /* If -w and not -x, check whether the match aligns with
+                 word boundaries.  Do this iteratively because:
+                 (a) the line may contain more than one occurrence of the
+                 pattern, and
+                 (b) Several alternatives in the pattern might be valid at a
+                 given point, and we may need to consider a shorter one to
+                 find a word boundary.  */
+              if (!match_lines && match_words)
+                while (match <= best_match)
+                  {
+                    regoff_t shorter_len = 0;
+                    if (! wordchar_next (match + len, end - 1)
+                        && ! wordchar_prev (beg, match, end - 1))
+                      goto assess_pattern_match;
+                    if (len > 0)
+                      {
+                        /* Try a shorter length anchored at the same place. */
+                        --len;
+                        dc->patterns[i].not_eol = 1;
+                        shorter_len = re_match (&dc->patterns[i], beg,
+                                                match + len - ptr, match - beg,
+                                                &dc->regs);
+                        if (shorter_len < -1)
+                          xalloc_die ();
+                      }
+                    if (0 < shorter_len)
+                      len = shorter_len;
+                    else
+                      {
+                        /* Try looking further on. */
+                        if (match == end - 1)
+                          break;
+                        match++;
+                        dc->patterns[i].not_eol = 0;
+                        start = re_search (&dc->patterns[i], beg, end - beg - 1,
+                                           match - beg, end - match - 1,
+                                           &dc->regs);
+                        if (start < 0)
+                          {
+                            if (start < -1)
+                              xalloc_die ();
+                            break;
+                          }
+                        len = dc->regs.end[0] - start;
+                        match = beg + start;
+                      }
+                  } /* while (match <= best_match) */
+              continue;
+            assess_pattern_match:
+              if (!start_ptr)
+                {
+                  /* Good enough for a non-exact match.
+                     No need to look at further patterns, if any.  */
+                  goto success;
+                }
+              if (match < best_match || (match == best_match && len > best_len))
+                {
+                  /* Best exact match:  leftmost, then longest.  */
+                  best_match = match;
+                  best_len = len;
+                }
+            } /* if re_search >= 0 */
+        } /* for Regex patterns.  */
+        if (best_match < end)
+          {
+            /* We have found an exact match.  We were just
+               waiting for the best one (leftmost then longest).  */
+            beg = best_match;
+            len = best_len;
+            goto success_in_len;
+          }
+    } /* for (beg = end ..) */
+
+  return -1;
+
+ success:
+  len = end - beg;
+ success_in_len:;
+  size_t off = beg - buf;
+  *match_size = len;
+  return off;
+}
diff --git a/src/grep/src/die.h b/src/grep/src/die.h
new file mode 100644
index 0000000..cc47c5a
--- /dev/null
+++ b/src/grep/src/die.h
@@ -0,0 +1,31 @@
+/* Report an error and exit.
+   Copyright 2016-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+#ifndef DIE_H
+#define DIE_H
+
+#include <error.h>
+#include <stdbool.h>
+#include <verify.h>
+
+/* Like 'error (STATUS, ...)', except STATUS must be a nonzero constant.
+   This may pacify the compiler or help it generate better code.  */
+#define die(status, ...) \
+  verify_expr (status, (error (status, __VA_ARGS__), assume (false)))
+
+#endif /* DIE_H */
diff --git a/src/grep/src/egrep.sh b/src/grep/src/egrep.sh
new file mode 100644
index 0000000..6d6c15a
--- /dev/null
+++ b/src/grep/src/egrep.sh
@@ -0,0 +1,2 @@
+#!@SHELL@
+exec @grep@ @option@ "$@"
diff --git a/src/grep/src/grep.c b/src/grep/src/grep.c
new file mode 100644
index 0000000..aabae2d
--- /dev/null
+++ b/src/grep/src/grep.c
@@ -0,0 +1,3173 @@
+/* grep.c - main driver file for grep.
+   Copyright (C) 1992, 1997-2002, 2004-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+/* Written July 1992 by Mike Haertel.  */
+
+#include <config.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <wchar.h>
+#include <inttypes.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include "system.h"
+
+#include "argmatch.h"
+#include "c-ctype.h"
+#include "c-stack.h"
+#include "closeout.h"
+#include "colorize.h"
+#include "die.h"
+#include "error.h"
+#include "exclude.h"
+#include "exitfail.h"
+#include "fcntl-safer.h"
+#if defined(KMK_GREP) && defined(KBUILD_OS_WINDOWS)
+# include "nt/fts-nt.h" /* Use NT optimized FTS implementation. */
+#else
+#include "fts_.h"
+#endif
+#include "getopt.h"
+#include "getprogname.h"
+#include "grep.h"
+#include "hash.h"
+#include "intprops.h"
+#include "propername.h"
+#include "safe-read.h"
+#include "search.h"
+#include "c-strcase.h"
+#include "version-etc.h"
+#include "xalloc.h"
+#include "xbinary-io.h"
+#include "xstrtol.h"
+
+#if defined(KMK_GREP) && defined(KBUILD_OS_WINDOWS)
+# include "console.h"
+#endif
+
+enum { SEP_CHAR_SELECTED = ':' };
+enum { SEP_CHAR_REJECTED = '-' };
+static char const SEP_STR_GROUP[] = "--";
+
+/* When stdout is connected to a regular file, save its stat
+   information here, so that we can automatically skip it, thus
+   avoiding a potential (racy) infinite loop.  */
+static struct stat out_stat;
+
+/* if non-zero, display usage information and exit */
+static int show_help;
+
+/* Print the version on standard output and exit.  */
+static bool show_version;
+
+/* Suppress diagnostics for nonexistent or unreadable files.  */
+static bool suppress_errors;
+
+/* If nonzero, use color markers.  */
+static int color_option;
+
+/* Show only the part of a line matching the expression. */
+static bool only_matching;
+
+/* If nonzero, make sure first content char in a line is on a tab stop. */
+static bool align_tabs;
+
+/* Print width of line numbers and byte offsets.  Nonzero if ALIGN_TABS.  */
+static int offset_width;
+
+/* An entry in the PATLOC array saying where patterns came from.  */
+struct patloc
+  {
+    /* Line number of the pattern in PATTERN_ARRAY.  Line numbers
+       start at 0, and each pattern is terminated by '\n'.  */
+    ptrdiff_t lineno;
+
+    /* Input location of the pattern.  The FILENAME "-" represents
+       standard input, and "" represents the command line.  FILELINE is
+       origin-1 for files and is irrelevant for the command line.  */
+    char const *filename;
+    ptrdiff_t fileline;
+  };
+
+/* The array of pattern locations.  The concatenation of all patterns
+   is stored in a single array, KEYS.  Given the invocation
+   'grep -f <(seq 5) -f <(seq 6) -f <(seq 3)', there will initially be
+   28 bytes in KEYS.  After duplicate patterns are removed, KEYS
+   will have 12 bytes and PATLOC will be {0,x,1}, {10,y,1}
+   where x, y and z are just place-holders for shell-generated names
+   since and z is omitted as it contains only duplicates.  Sometimes
+   removing duplicates will grow PATLOC, since each run of
+   removed patterns not at a file start or end requires another
+   PATLOC entry for the first non-removed pattern.  */
+static struct patloc *patloc;
+static size_t patlocs_allocated, patlocs_used;
+
+/* Pointer to the array of patterns, each terminated by newline.  */
+static char *pattern_array;
+
+/* The number of unique patterns seen so far.  */
+static size_t n_patterns;
+
+/* Hash table of patterns seen so far.  */
+static Hash_table *pattern_table;
+
+/* Hash and compare newline-terminated patterns for textual equality.
+   Patterns are represented by origin-1 offsets into PATTERN_ARRAY,
+   cast to void *.  The origin-1 is so that the first pattern offset
+   does not appear to be a null pointer when cast to void *.  */
+static size_t _GL_ATTRIBUTE_PURE
+hash_pattern (void const *pat, size_t n_buckets)
+{
+  size_t h = 0;
+  intptr_t pat_offset = (intptr_t) pat - 1;
+  unsigned char const *s = (unsigned char const *) pattern_array + pat_offset;
+  for ( ; *s != '\n'; s++)
+    h = h * 33 ^ *s;
+  return h % n_buckets;
+}
+static bool _GL_ATTRIBUTE_PURE
+compare_patterns (void const *a, void const *b)
+{
+  intptr_t a_offset = (intptr_t) a - 1;
+  intptr_t b_offset = (intptr_t) b - 1;
+  char const *p = pattern_array + a_offset;
+  char const *q = pattern_array + b_offset;
+  for (; *p == *q; p++, q++)
+    if (*p == '\n')
+      return true;
+  return false;
+}
+
+/* Update KEYS to remove duplicate patterns, and return the number of
+   bytes in the resulting KEYS.  KEYS contains a sequence of patterns
+   each terminated by '\n'.  The first DUPFREE_SIZE bytes are a
+   sequence of patterns with no duplicates; SIZE is the total number
+   of bytes in KEYS.  If some patterns past the first DUPFREE_SIZE
+   bytes are not duplicates, update PATLOCS accordingly.  */
+static ptrdiff_t
+update_patterns (char *keys, ptrdiff_t dupfree_size, ptrdiff_t size,
+                 char const *filename)
+{
+  char *dst = keys + dupfree_size;
+  ptrdiff_t fileline = 1;
+  int prev_inserted = 0;
+
+  char const *srclim = keys + size;
+  ptrdiff_t patsize;
+  for (char const *src = keys + dupfree_size; src < srclim; src += patsize)
+    {
+      char const *patend = rawmemchr (src, '\n');
+      patsize = patend + 1 - src;
+      memmove (dst, src, patsize);
+
+      intptr_t dst_offset_1 = dst - keys + 1;
+      int inserted = hash_insert_if_absent (pattern_table,
+                                            (void *) dst_offset_1, NULL);
+      if (inserted)
+        {
+          if (inserted < 0)
+            xalloc_die ();
+          dst += patsize;
+
+          /* Add a PATLOCS entry unless this input line is simply the
+             next one in the same file.  */
+          if (!prev_inserted)
+            {
+              if (patlocs_used == patlocs_allocated)
+                patloc = x2nrealloc (patloc, &patlocs_allocated,
+                                     sizeof *patloc);
+              patloc[patlocs_used++]
+                = (struct patloc) { .lineno = n_patterns,
+                                    .filename = filename,
+                                    .fileline = fileline };
+            }
+          n_patterns++;
+        }
+
+      prev_inserted = inserted;
+      fileline++;
+    }
+
+  return dst - keys;
+}
+
+/* Map LINENO, the origin-0 line number of one of the input patterns,
+   to the name of the file from which it came.  Return "-" if it was
+   read from stdin, "" if it was specified on the command line.
+   Set *NEW_LINENO to the origin-1 line number of PATTERN in the file,
+   or to an unspecified value if PATTERN came from the command line.  */
+char const * _GL_ATTRIBUTE_PURE
+pattern_file_name (size_t lineno, size_t *new_lineno)
+{
+  ptrdiff_t i;
+  for (i = 1; i < patlocs_used; i++)
+    if (lineno < patloc[i].lineno)
+      break;
+  *new_lineno = lineno - patloc[i - 1].lineno + patloc[i - 1].fileline;
+  return patloc[i - 1].filename;
+}
+
+#if HAVE_ASAN
+/* Record the starting address and length of the sole poisoned region,
+   so that we can unpoison it later, just before each following read.  */
+static void const *poison_buf;
+static size_t poison_len;
+
+static void
+clear_asan_poison (void)
+{
+  if (poison_buf)
+    __asan_unpoison_memory_region (poison_buf, poison_len);
+}
+
+static void
+asan_poison (void const *addr, size_t size)
+{
+  poison_buf = addr;
+  poison_len = size;
+
+  __asan_poison_memory_region (poison_buf, poison_len);
+}
+#else
+static void clear_asan_poison (void) { }
+static void asan_poison (void const volatile *addr, size_t size) { }
+#endif
+
+/* The group separator used when context is requested. */
+static const char *group_separator = SEP_STR_GROUP;
+
+/* The context and logic for choosing default --color screen attributes
+   (foreground and background colors, etc.) are the following.
+      -- There are eight basic colors available, each with its own
+         nominal luminosity to the human eye and foreground/background
+         codes (black [0 %, 30/40], blue [11 %, 34/44], red [30 %, 31/41],
+         magenta [41 %, 35/45], green [59 %, 32/42], cyan [70 %, 36/46],
+         yellow [89 %, 33/43], and white [100 %, 37/47]).
+      -- Sometimes, white as a background is actually implemented using
+         a shade of light gray, so that a foreground white can be visible
+         on top of it (but most often not).
+      -- Sometimes, black as a foreground is actually implemented using
+         a shade of dark gray, so that it can be visible on top of a
+         background black (but most often not).
+      -- Sometimes, more colors are available, as extensions.
+      -- Other attributes can be selected/deselected (bold [1/22],
+         underline [4/24], standout/inverse [7/27], blink [5/25], and
+         invisible/hidden [8/28]).  They are sometimes implemented by
+         using colors instead of what their names imply; e.g., bold is
+         often achieved by using brighter colors.  In practice, only bold
+         is really available to us, underline sometimes being mapped by
+         the terminal to some strange color choice, and standout best
+         being left for use by downstream programs such as less(1).
+      -- We cannot assume that any of the extensions or special features
+         are available for the purpose of choosing defaults for everyone.
+      -- The most prevalent default terminal backgrounds are pure black
+         and pure white, and are not necessarily the same shades of
+         those as if they were selected explicitly with SGR sequences.
+         Some terminals use dark or light pictures as default background,
+         but those are covered over by an explicit selection of background
+         color with an SGR sequence; their users will appreciate their
+         background pictures not be covered like this, if possible.
+      -- Some uses of colors attributes is to make some output items
+         more understated (e.g., context lines); this cannot be achieved
+         by changing the background color.
+      -- For these reasons, the grep color defaults should strive not
+         to change the background color from its default, unless it's
+         for a short item that should be highlighted, not understated.
+      -- The grep foreground color defaults (without an explicitly set
+         background) should provide enough contrast to be readable on any
+         terminal with either a black (dark) or white (light) background.
+         This only leaves red, magenta, green, and cyan (and their bold
+         counterparts) and possibly bold blue.  */
+/* The color strings used for matched text.
+   The user can overwrite them using the deprecated
+   environment variable GREP_COLOR or the new GREP_COLORS.  */
+static const char *selected_match_color = "01;31";	/* bold red */
+static const char *context_match_color  = "01;31";	/* bold red */
+
+/* Other colors.  Defaults look damn good.  */
+static const char *filename_color = "35";	/* magenta */
+static const char *line_num_color = "32";	/* green */
+static const char *byte_num_color = "32";	/* green */
+static const char *sep_color      = "36";	/* cyan */
+static const char *selected_line_color = "";	/* default color pair */
+static const char *context_line_color  = "";	/* default color pair */
+
+/* Select Graphic Rendition (SGR, "\33[...m") strings.  */
+/* Also Erase in Line (EL) to Right ("\33[K") by default.  */
+/*    Why have EL to Right after SGR?
+         -- The behavior of line-wrapping when at the bottom of the
+            terminal screen and at the end of the current line is often
+            such that a new line is introduced, entirely cleared with
+            the current background color which may be different from the
+            default one (see the boolean back_color_erase terminfo(5)
+            capability), thus scrolling the display by one line.
+            The end of this new line will stay in this background color
+            even after reverting to the default background color with
+            "\33[m', unless it is explicitly cleared again with "\33[K"
+            (which is the behavior the user would instinctively expect
+            from the whole thing).  There may be some unavoidable
+            background-color flicker at the end of this new line because
+            of this (when timing with the monitor's redraw is just right).
+         -- The behavior of HT (tab, "\t") is usually the same as that of
+            Cursor Forward Tabulation (CHT) with a default parameter
+            of 1 ("\33[I"), i.e., it performs pure movement to the next
+            tab stop, without any clearing of either content or screen
+            attributes (including background color); try
+               printf 'asdfqwerzxcv\rASDF\tZXCV\n'
+            in a bash(1) shell to demonstrate this.  This is not what the
+            user would instinctively expect of HT (but is ok for CHT).
+            The instinctive behavior would include clearing the terminal
+            cells that are skipped over by HT with blank cells in the
+            current screen attributes, including background color;
+            the boolean dest_tabs_magic_smso terminfo(5) capability
+            indicates this saner behavior for HT, but only some rare
+            terminals have it (although it also indicates a special
+            glitch with standout mode in the Teleray terminal for which
+            it was initially introduced).  The remedy is to add "\33K"
+            after each SGR sequence, be it START (to fix the behavior
+            of any HT after that before another SGR) or END (to fix the
+            behavior of an HT in default background color that would
+            follow a line-wrapping at the bottom of the screen in another
+            background color, and to complement doing it after START).
+            Piping grep's output through a pager such as less(1) avoids
+            any HT problems since the pager performs tab expansion.
+
+      Generic disadvantages of this remedy are:
+         -- Some very rare terminals might support SGR but not EL (nobody
+            will use "grep --color" on a terminal that does not support
+            SGR in the first place).
+         -- Having these extra control sequences might somewhat complicate
+            the task of any program trying to parse "grep --color"
+            output in order to extract structuring information from it.
+      A specific disadvantage to doing it after SGR START is:
+         -- Even more possible background color flicker (when timing
+            with the monitor's redraw is just right), even when not at the
+            bottom of the screen.
+      There are no additional disadvantages specific to doing it after
+      SGR END.
+
+      It would be impractical for GNU grep to become a full-fledged
+      terminal program linked against ncurses or the like, so it will
+      not detect terminfo(5) capabilities.  */
+static const char *sgr_start = "\33[%sm\33[K";
+static const char *sgr_end   = "\33[m\33[K";
+
+/* SGR utility functions.  */
+static void
+pr_sgr_start (char const *s)
+{
+  if (*s)
+    print_start_colorize (sgr_start, s);
+}
+static void
+pr_sgr_end (char const *s)
+{
+  if (*s)
+    print_end_colorize (sgr_end);
+}
+static void
+pr_sgr_start_if (char const *s)
+{
+  if (color_option)
+    pr_sgr_start (s);
+}
+static void
+pr_sgr_end_if (char const *s)
+{
+  if (color_option)
+    pr_sgr_end (s);
+}
+
+struct color_cap
+  {
+    const char *name;
+    const char **var;
+    void (*fct) (void);
+  };
+
+static void
+color_cap_mt_fct (void)
+{
+  /* Our caller just set selected_match_color.  */
+  context_match_color = selected_match_color;
+}
+
+static void
+color_cap_rv_fct (void)
+{
+  /* By this point, it was 1 (or already -1).  */
+  color_option = -1;  /* That's still != 0.  */
+}
+
+static void
+color_cap_ne_fct (void)
+{
+  sgr_start = "\33[%sm";
+  sgr_end   = "\33[m";
+}
+
+/* For GREP_COLORS.  */
+static const struct color_cap color_dict[] =
+  {
+    { "mt", &selected_match_color, color_cap_mt_fct }, /* both ms/mc */
+    { "ms", &selected_match_color, NULL }, /* selected matched text */
+    { "mc", &context_match_color,  NULL }, /* context matched text */
+    { "fn", &filename_color,       NULL }, /* filename */
+    { "ln", &line_num_color,       NULL }, /* line number */
+    { "bn", &byte_num_color,       NULL }, /* byte (sic) offset */
+    { "se", &sep_color,            NULL }, /* separator */
+    { "sl", &selected_line_color,  NULL }, /* selected lines */
+    { "cx", &context_line_color,   NULL }, /* context lines */
+    { "rv", NULL,                  color_cap_rv_fct }, /* -v reverses sl/cx */
+    { "ne", NULL,                  color_cap_ne_fct }, /* no EL on SGR_* */
+    { NULL, NULL,                  NULL }
+  };
+
+/* Saved errno value from failed output functions on stdout.  */
+static int stdout_errno;
+
+#ifdef KMK_GREP
+# ifdef KBUILD_OS_WINDOWS
+#  include <assert.h>
+static void fwrite_errno (void const *, size_t, size_t);
+static int g_fStdOutIsConsole = -1; /* TRUE or FALSE; -1 if not initialize. */
+#endif
+
+/* Attempts to set the code page, leave the rest of the locale as default. */
+static void kmk_grep_set_codepage (const char *pszCodepage)
+{
+# ifdef KBUILD_OS_WINDOWS
+  /* Make sure it starts with a dot: */
+  char szDot[256];
+  if (pszCodepage[0] != '.')
+    {
+      snprintf (szDot, sizeof(szDot), ".%s", pszCodepage);
+      pszCodepage = szDot;
+    }
+
+  if (setlocale (LC_ALL, pszCodepage) == NULL)
+    error (0, errno, _("warning: setlocale (LC_ALL, \"%s\") failed"),
+           pszCodepage);
+
+  g_fStdOutIsConsole = -1; /* ensure this is reinitialized. */
+# endif
+}
+#endif /* KMK_GREP */
+
+static void
+putchar_errno (int c)
+{
+#if defined(KMK_GREP) && defined(KBUILD_OS_WINDOWS)
+  char ch = (char)c;
+  fwrite_errno (&ch, 1, 1);
+#else
+  if (putchar (c) < 0)
+    stdout_errno = errno;
+#endif
+}
+
+static void
+fputs_errno (char const *s)
+{
+#if defined(KMK_GREP) && defined(KBUILD_OS_WINDOWS)
+  fwrite_errno (s, 1, strlen (s));
+#else
+  if (fputs (s, stdout) < 0)
+    stdout_errno = errno;
+#endif
+}
+
+static void _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (1, 2)
+printf_errno (char const *format, ...)
+{
+  va_list ap;
+  va_start (ap, format);
+#if defined(KMK_GREP) && defined(KBUILD_OS_WINDOWS)
+  char szBuf[1024]; /* Only really used for a PRIuMAX number and maybe a newline.  */
+  int cch = vsnprintf (szBuf, sizeof (szBuf), format, ap);
+  assert (cch < sizeof(szBuf));
+  fwrite_errno (szBuf, 1, cch);
+#else
+  if (vfprintf (stdout, format, ap) < 0)
+    stdout_errno = errno;
+#endif
+  va_end (ap);
+}
+
+static void
+fwrite_errno (void const *ptr, size_t size, size_t nmemb)
+{
+#if defined(KMK_GREP) && defined(KBUILD_OS_WINDOWS)
+  /*
+   * This trick reduces the runtime of 'grep -r GNU .' in the grep source dir
+   * from just above 11 seconds to around 0.8 seconds.
+   *
+   * The trouble with the microsoft CRTs (both the old and the new UCRT), is
+   * that we end up writing one char at the time when writing to the console,
+   * which is a total performance killer. write_double_translated_ansi_nolock()
+   * and write_requires_double_translation_nolock() in lowio/write.cpp in the
+   * UCRT sources have further details.
+   */
+  static HANDLE s_hStdOut = INVALID_HANDLE_VALUE;
+  if (g_fStdOutIsConsole != -1)
+    { /* likely*/ }
+  else
+    {
+      DWORD fModeIgnored;
+      s_hStdOut          = (HANDLE)_get_osfhandle (fileno (stdout));
+      g_fStdOutIsConsole = GetConsoleMode (s_hStdOut, &fModeIgnored)
+                         ? TRUE : FALSE;
+      if (getenv ("KMK_GREP_CONSOLE_DEBUG"))
+        fprintf (stderr, "kmk_grep: hStdOut=%p %sconsole codepage=%u ansi=%u\n",
+                s_hStdOut, g_fStdOutIsConsole ? "" : "!",
+                get_crt_codepage (), get_ansi_codepage ());
+    }
+  if (g_fStdOutIsConsole == TRUE && size && nmemb)
+    {
+      size_t const cbToWrite = size * nmemb;
+      if (   cbToWrite < (size_t)INT_MAX / 4
+          && cbToWrite >= size
+          && cbToWrite >= nmemb)
+        {
+          /* ASSUME that one input byte won't be translated to more than one
+             surrogate pair, or two compound UTF-16 codepoints. */
+          wchar_t        awcBuf[1024];
+          wchar_t       *pawcFree = NULL;
+          wchar_t       *pawcBuf;
+          size_t         cwcBuf = cbToWrite * 2 + 16;
+          if (cwcBuf < sizeof(awcBuf) / sizeof(wchar_t))
+            {
+              cwcBuf = sizeof(awcBuf) / sizeof(wchar_t);
+              pawcBuf = awcBuf;
+            }
+          else
+              pawcFree = pawcBuf = (wchar_t *)malloc(cwcBuf * sizeof(wchar_t));
+          if (pawcBuf)
+            {
+              int cwcToWrite = MultiByteToWideChar(get_crt_codepage(),
+                                                   0 /*dwFlags*/,
+                                                   ptr, (int)cbToWrite,
+                                                   pawcBuf, (int)(cwcBuf - 1));
+              if (cwcToWrite > 0)
+                {
+                  pawcBuf[cwcToWrite] = '\0';
+
+                  /* Let the CRT do the rest.  At least the Visual C++ 2010 CRT
+                     sources indicates _cputws will do the right thing.  */
+                  fflush(stdout);
+                  int rc = _cputws(pawcBuf);
+                  if (pawcFree)
+                    free(pawcFree);
+                  if (rc != 0)
+                    stdout_errno = errno;
+                  return;
+                }
+              free(pawcFree);
+            }
+        }
+    }
+#endif
+  if (fwrite (ptr, size, nmemb, stdout) != nmemb)
+    stdout_errno = errno;
+}
+
+static void
+fflush_errno (void)
+{
+  if (fflush (stdout) != 0)
+    stdout_errno = errno;
+}
+
+static struct exclude *excluded_patterns[2];
+static struct exclude *excluded_directory_patterns[2];
+/* Short options.  */
+static char const short_options[] =
+"0123456789A:B:C:D:EFGHIPTUVX:abcd:e:f:hiLlm:noqRrsuvwxyZz";
+
+/* Non-boolean long options that have no corresponding short equivalents.  */
+enum
+{
+  BINARY_FILES_OPTION = CHAR_MAX + 1,
+  COLOR_OPTION,
+  EXCLUDE_DIRECTORY_OPTION,
+  EXCLUDE_OPTION,
+  EXCLUDE_FROM_OPTION,
+  GROUP_SEPARATOR_OPTION,
+  INCLUDE_OPTION,
+  LINE_BUFFERED_OPTION,
+  LABEL_OPTION,
+#ifdef KMK_GREP
+  UTF8_OPTION,
+  CODEPAGE_OPTION,
+#endif
+  NO_IGNORE_CASE_OPTION
+};
+
+/* Long options equivalences. */
+static struct option const long_options[] =
+{
+  {"basic-regexp",    no_argument, NULL, 'G'},
+  {"extended-regexp", no_argument, NULL, 'E'},
+  {"fixed-regexp",    no_argument, NULL, 'F'},
+  {"fixed-strings",   no_argument, NULL, 'F'},
+  {"perl-regexp",     no_argument, NULL, 'P'},
+  {"after-context", required_argument, NULL, 'A'},
+  {"before-context", required_argument, NULL, 'B'},
+  {"binary-files", required_argument, NULL, BINARY_FILES_OPTION},
+  {"byte-offset", no_argument, NULL, 'b'},
+  {"context", required_argument, NULL, 'C'},
+  {"color", optional_argument, NULL, COLOR_OPTION},
+  {"colour", optional_argument, NULL, COLOR_OPTION},
+  {"count", no_argument, NULL, 'c'},
+  {"devices", required_argument, NULL, 'D'},
+  {"directories", required_argument, NULL, 'd'},
+  {"exclude", required_argument, NULL, EXCLUDE_OPTION},
+  {"exclude-from", required_argument, NULL, EXCLUDE_FROM_OPTION},
+  {"exclude-dir", required_argument, NULL, EXCLUDE_DIRECTORY_OPTION},
+  {"file", required_argument, NULL, 'f'},
+  {"files-with-matches", no_argument, NULL, 'l'},
+  {"files-without-match", no_argument, NULL, 'L'},
+  {"group-separator", required_argument, NULL, GROUP_SEPARATOR_OPTION},
+  {"help", no_argument, &show_help, 1},
+  {"include", required_argument, NULL, INCLUDE_OPTION},
+  {"ignore-case", no_argument, NULL, 'i'},
+  {"no-ignore-case", no_argument, NULL, NO_IGNORE_CASE_OPTION},
+  {"initial-tab", no_argument, NULL, 'T'},
+  {"label", required_argument, NULL, LABEL_OPTION},
+  {"line-buffered", no_argument, NULL, LINE_BUFFERED_OPTION},
+  {"line-number", no_argument, NULL, 'n'},
+  {"line-regexp", no_argument, NULL, 'x'},
+  {"max-count", required_argument, NULL, 'm'},
+
+  {"no-filename", no_argument, NULL, 'h'},
+  {"no-group-separator", no_argument, NULL, GROUP_SEPARATOR_OPTION},
+  {"no-messages", no_argument, NULL, 's'},
+  {"null", no_argument, NULL, 'Z'},
+  {"null-data", no_argument, NULL, 'z'},
+  {"only-matching", no_argument, NULL, 'o'},
+  {"quiet", no_argument, NULL, 'q'},
+  {"recursive", no_argument, NULL, 'r'},
+  {"dereference-recursive", no_argument, NULL, 'R'},
+  {"regexp", required_argument, NULL, 'e'},
+  {"invert-match", no_argument, NULL, 'v'},
+  {"silent", no_argument, NULL, 'q'},
+  {"text", no_argument, NULL, 'a'},
+  {"binary", no_argument, NULL, 'U'},
+  {"unix-byte-offsets", no_argument, NULL, 'u'},
+  {"version", no_argument, NULL, 'V'},
+  {"with-filename", no_argument, NULL, 'H'},
+  {"word-regexp", no_argument, NULL, 'w'},
+#ifdef KMK_GREP
+  {"utf8", no_argument, NULL, UTF8_OPTION},
+  {"cp", required_argument, NULL, CODEPAGE_OPTION},
+  {"codepage", required_argument, NULL, CODEPAGE_OPTION},
+#endif
+  {0, 0, 0, 0}
+};
+
+/* Define flags declared in grep.h. */
+bool match_icase;
+bool match_words;
+bool match_lines;
+char eolbyte;
+
+/* For error messages. */
+/* The input file name, or (if standard input) null or a --label argument.  */
+static char const *filename;
+/* Omit leading "./" from file names in diagnostics.  */
+static bool omit_dot_slash;
+static bool errseen;
+
+/* True if output from the current input file has been suppressed
+   because an output line had an encoding error.  */
+static bool encoding_error_output;
+
+enum directories_type
+  {
+    READ_DIRECTORIES = 2,
+    RECURSE_DIRECTORIES,
+    SKIP_DIRECTORIES
+  };
+
+/* How to handle directories.  */
+static char const *const directories_args[] =
+{
+  "read", "recurse", "skip", NULL
+};
+static enum directories_type const directories_types[] =
+{
+  READ_DIRECTORIES, RECURSE_DIRECTORIES, SKIP_DIRECTORIES
+};
+ARGMATCH_VERIFY (directories_args, directories_types);
+
+static enum directories_type directories = READ_DIRECTORIES;
+
+enum { basic_fts_options = FTS_CWDFD | FTS_NOSTAT | FTS_TIGHT_CYCLE_CHECK };
+static int fts_options = basic_fts_options | FTS_COMFOLLOW | FTS_PHYSICAL;
+
+/* How to handle devices. */
+static enum
+  {
+    READ_COMMAND_LINE_DEVICES,
+    READ_DEVICES,
+    SKIP_DEVICES
+  } devices = READ_COMMAND_LINE_DEVICES;
+
+static bool grepfile (int, char const *, bool, bool);
+static bool grepdesc (int, bool);
+
+static bool
+is_device_mode (mode_t m)
+{
+  return S_ISCHR (m) || S_ISBLK (m) || S_ISSOCK (m) || S_ISFIFO (m);
+}
+
+static bool
+skip_devices (bool command_line)
+{
+  return (devices == SKIP_DEVICES
+          || ((devices == READ_COMMAND_LINE_DEVICES) & !command_line));
+}
+
+/* Return if ST->st_size is defined.  Assume the file is not a
+   symbolic link.  */
+static bool
+usable_st_size (struct stat const *st)
+{
+  return S_ISREG (st->st_mode) || S_TYPEISSHM (st) || S_TYPEISTMO (st);
+}
+
+/* Lame substitutes for SEEK_DATA and SEEK_HOLE on platforms lacking them.
+   Do not rely on these finding data or holes if they equal SEEK_SET.  */
+#ifndef SEEK_DATA
+enum { SEEK_DATA = SEEK_SET };
+#endif
+#ifndef SEEK_HOLE
+enum { SEEK_HOLE = SEEK_SET };
+#endif
+
+/* True if lseek with SEEK_CUR or SEEK_DATA failed on the current input.  */
+static bool seek_failed;
+static bool seek_data_failed;
+
+/* Functions we'll use to search. */
+typedef void *(*compile_fp_t) (char *, size_t, reg_syntax_t, bool);
+typedef size_t (*execute_fp_t) (void *, char const *, size_t, size_t *,
+                                char const *);
+static execute_fp_t execute;
+static void *compiled_pattern;
+
+char const *
+input_filename (void)
+{
+  if (!filename)
+    filename = _("(standard input)");
+  return filename;
+}
+
+/* Unless requested, diagnose an error about the input file.  */
+static void
+suppressible_error (int errnum)
+{
+  if (! suppress_errors)
+    error (0, errnum, "%s", input_filename ());
+  errseen = true;
+}
+
+/* If there has already been a write error, don't bother closing
+   standard output, as that might elicit a duplicate diagnostic.  */
+static void
+clean_up_stdout (void)
+{
+  if (! stdout_errno)
+    close_stdout ();
+}
+
+/* A cast to TYPE of VAL.  Use this when TYPE is a pointer type, VAL
+   is properly aligned for TYPE, and 'gcc -Wcast-align' cannot infer
+   the alignment and would otherwise complain about the cast.  */
+#if 4 < __GNUC__ + (6 <= __GNUC_MINOR__)
+# define CAST_ALIGNED(type, val)                           \
+    ({ __typeof__ (val) val_ = val;                        \
+       _Pragma ("GCC diagnostic push")                     \
+       _Pragma ("GCC diagnostic ignored \"-Wcast-align\"") \
+       (type) val_;                                        \
+       _Pragma ("GCC diagnostic pop")                      \
+    })
+#else
+# define CAST_ALIGNED(type, val) ((type) (val))
+#endif
+
+/* An unsigned type suitable for fast matching.  */
+typedef uintmax_t uword;
+static uword const uword_max = UINTMAX_MAX;
+
+struct localeinfo localeinfo;
+
+/* A mask to test for unibyte characters, with the pattern repeated to
+   fill a uword.  For a multibyte character encoding where
+   all bytes are unibyte characters, this is 0.  For UTF-8, this is
+   0x808080....  For encodings where unibyte characters have no discerned
+   pattern, this is all 1s.  The unsigned char C is a unibyte
+   character if C & UNIBYTE_MASK is zero.  If the uword W is the
+   concatenation of bytes, the bytes are all unibyte characters
+   if W & UNIBYTE_MASK is zero.  */
+static uword unibyte_mask;
+
+static void
+initialize_unibyte_mask (void)
+{
+  /* For each encoding error I that MASK does not already match,
+     accumulate I's most significant 1 bit by ORing it into MASK.
+     Although any 1 bit of I could be used, in practice high-order
+     bits work better.  */
+  unsigned char mask = 0;
+  int ms1b = 1;
+  for (int i = 1; i <= UCHAR_MAX; i++)
+    if ((localeinfo.sbclen[i] != 1) & ! (mask & i))
+      {
+        while (ms1b * 2 <= i)
+          ms1b *= 2;
+        mask |= ms1b;
+      }
+
+  /* Now MASK will detect any encoding-error byte, although it may
+     cry wolf and it may not be optimal.  Build a uword-length mask by
+     repeating MASK.  */
+  unibyte_mask = uword_max / UCHAR_MAX * mask;
+}
+
+/* Skip the easy bytes in a buffer that is guaranteed to have a sentinel
+   that is not easy, and return a pointer to the first non-easy byte.
+   The easy bytes all have UNIBYTE_MASK off.  */
+static char const * _GL_ATTRIBUTE_PURE
+skip_easy_bytes (char const *buf)
+{
+  /* Search a byte at a time until the pointer is aligned, then a
+     uword at a time until a match is found, then a byte at a time to
+     identify the exact byte.  The uword search may go slightly past
+     the buffer end, but that's benign.  */
+  char const *p;
+  uword const *s;
+  for (p = buf; (uintptr_t) p % sizeof (uword) != 0; p++)
+    if (to_uchar (*p) & unibyte_mask)
+      return p;
+  for (s = CAST_ALIGNED (uword const *, p); ! (*s & unibyte_mask); s++)
+    continue;
+  for (p = (char const *) s; ! (to_uchar (*p) & unibyte_mask); p++)
+    continue;
+  return p;
+}
+
+/* Return true if BUF, of size SIZE, has an encoding error.
+   BUF must be followed by at least sizeof (uword) bytes,
+   the first of which may be modified.  */
+static bool
+buf_has_encoding_errors (char *buf, size_t size)
+{
+  if (! unibyte_mask)
+    return false;
+
+  mbstate_t mbs = { 0 };
+  size_t clen;
+
+  buf[size] = -1;
+  for (char const *p = buf; (p = skip_easy_bytes (p)) < buf + size; p += clen)
+    {
+      clen = mbrlen (p, buf + size - p, &mbs);
+      if ((size_t) -2 <= clen)
+        return true;
+    }
+
+  return false;
+}
+
+
+/* Return true if BUF, of size SIZE, has a null byte.
+   BUF must be followed by at least one byte,
+   which may be arbitrarily written to or read from.  */
+static bool
+buf_has_nulls (char *buf, size_t size)
+{
+  buf[size] = 0;
+  return strlen (buf) != size;
+}
+
+/* Return true if a file is known to contain null bytes.
+   SIZE bytes have already been read from the file
+   with descriptor FD and status ST.  */
+static bool
+file_must_have_nulls (size_t size, int fd, struct stat const *st)
+{
+  /* If the file has holes, it must contain a null byte somewhere.  */
+  if (SEEK_HOLE != SEEK_SET && !seek_failed
+      && usable_st_size (st) && size < st->st_size)
+    {
+      off_t cur = size;
+      if (O_BINARY || fd == STDIN_FILENO)
+        {
+          cur = lseek (fd, 0, SEEK_CUR);
+          if (cur < 0)
+            return false;
+        }
+
+      /* Look for a hole after the current location.  */
+      off_t hole_start = lseek (fd, cur, SEEK_HOLE);
+      if (0 <= hole_start)
+        {
+          if (lseek (fd, cur, SEEK_SET) < 0)
+            suppressible_error (errno);
+          if (hole_start < st->st_size)
+            return true;
+        }
+    }
+
+  return false;
+}
+
+/* Convert STR to a nonnegative integer, storing the result in *OUT.
+   STR must be a valid context length argument; report an error if it
+   isn't.  Silently ceiling *OUT at the maximum value, as that is
+   practically equivalent to infinity for grep's purposes.  */
+static void
+context_length_arg (char const *str, intmax_t *out)
+{
+  switch (xstrtoimax (str, 0, 10, out, ""))
+    {
+    case LONGINT_OK:
+    case LONGINT_OVERFLOW:
+      if (0 <= *out)
+        break;
+      FALLTHROUGH;
+    default:
+      die (EXIT_TROUBLE, 0, "%s: %s", str,
+           _("invalid context length argument"));
+    }
+}
+
+/* Return the add_exclude options suitable for excluding a file name.
+   If COMMAND_LINE, it is a command-line file name.  */
+static int
+exclude_options (bool command_line)
+{
+  return EXCLUDE_WILDCARDS | (command_line ? 0 : EXCLUDE_ANCHORED);
+}
+
+/* Return true if the file with NAME should be skipped.
+   If COMMAND_LINE, it is a command-line argument.
+   If IS_DIR, it is a directory.  */
+static bool
+skipped_file (char const *name, bool command_line, bool is_dir)
+{
+  struct exclude **pats;
+  if (! is_dir)
+    pats = excluded_patterns;
+  else if (directories == SKIP_DIRECTORIES)
+    return true;
+  else if (command_line && omit_dot_slash)
+    return false;
+  else
+    pats = excluded_directory_patterns;
+  return pats[command_line] && excluded_file_name (pats[command_line], name);
+}
+
+/* Hairy buffering mechanism for grep.  The intent is to keep
+   all reads aligned on a page boundary and multiples of the
+   page size, unless a read yields a partial page.  */
+
+static char *buffer;		/* Base of buffer. */
+static size_t bufalloc;		/* Allocated buffer size, counting slop. */
+static int bufdesc;		/* File descriptor. */
+static char *bufbeg;		/* Beginning of user-visible stuff. */
+static char *buflim;		/* Limit of user-visible stuff. */
+static size_t pagesize;		/* alignment of memory pages */
+static off_t bufoffset;		/* Read offset.  */
+static off_t after_last_match;	/* Pointer after last matching line that
+                                   would have been output if we were
+                                   outputting characters. */
+static bool skip_nuls;		/* Skip '\0' in data.  */
+static bool skip_empty_lines;	/* Skip empty lines in data.  */
+static uintmax_t totalnl;	/* Total newline count before lastnl. */
+
+/* Initial buffer size, not counting slop. */
+enum { INITIAL_BUFSIZE = 96 * 1024 };
+
+/* Return VAL aligned to the next multiple of ALIGNMENT.  VAL can be
+   an integer or a pointer.  Both args must be free of side effects.  */
+#define ALIGN_TO(val, alignment) \
+  ((uintptr_t) (val) % (alignment) == 0 \
+   ? (val) \
+   : (val) + ((alignment) - (uintptr_t) (val) % (alignment)))
+
+/* Add two numbers that count input bytes or lines, and report an
+   error if the addition overflows.  */
+static uintmax_t
+add_count (uintmax_t a, uintmax_t b)
+{
+  uintmax_t sum = a + b;
+  if (sum < a)
+    die (EXIT_TROUBLE, 0, _("input is too large to count"));
+  return sum;
+}
+
+/* Return true if BUF (of size SIZE) is all zeros.  */
+static bool
+all_zeros (char const *buf, size_t size)
+{
+  for (char const *p = buf; p < buf + size; p++)
+    if (*p)
+      return false;
+  return true;
+}
+
+/* Reset the buffer for a new file, returning false if we should skip it.
+   Initialize on the first time through. */
+static bool
+reset (int fd, struct stat const *st)
+{
+  bufbeg = buflim = ALIGN_TO (buffer + 1, pagesize);
+  bufbeg[-1] = eolbyte;
+  bufdesc = fd;
+  bufoffset = fd == STDIN_FILENO ? lseek (fd, 0, SEEK_CUR) : 0;
+  seek_failed = bufoffset < 0;
+
+  /* Assume SEEK_DATA fails if SEEK_CUR does.  */
+  seek_data_failed = seek_failed;
+
+  if (seek_failed)
+    {
+      if (errno != ESPIPE)
+        {
+          suppressible_error (errno);
+          return false;
+        }
+      bufoffset = 0;
+    }
+  return true;
+}
+
+/* Read new stuff into the buffer, saving the specified
+   amount of old stuff.  When we're done, 'bufbeg' points
+   to the beginning of the buffer contents, and 'buflim'
+   points just after the end.  Return false if there's an error.  */
+static bool
+fillbuf (size_t save, struct stat const *st)
+{
+  size_t fillsize;
+  bool cc = true;
+  char *readbuf;
+  size_t readsize;
+
+  if (pagesize <= buffer + bufalloc - sizeof (uword) - buflim)
+    readbuf = buflim;
+  else
+    {
+      size_t minsize = save + pagesize;
+      size_t newsize;
+      size_t newalloc;
+      char *newbuf;
+
+      /* Grow newsize until it is at least as great as minsize.  */
+      for (newsize = bufalloc - pagesize - sizeof (uword);
+           newsize < minsize;
+           newsize *= 2)
+        if ((SIZE_MAX - pagesize - sizeof (uword)) / 2 < newsize)
+          xalloc_die ();
+
+      /* Try not to allocate more memory than the file size indicates,
+         as that might cause unnecessary memory exhaustion if the file
+         is large.  However, do not use the original file size as a
+         heuristic if we've already read past the file end, as most
+         likely the file is growing.  */
+      if (usable_st_size (st))
+        {
+          off_t to_be_read = st->st_size - bufoffset;
+          off_t maxsize_off = save + to_be_read;
+          if (0 <= to_be_read && to_be_read <= maxsize_off
+              && maxsize_off == (size_t) maxsize_off
+              && minsize <= (size_t) maxsize_off
+              && (size_t) maxsize_off < newsize)
+            newsize = maxsize_off;
+        }
+
+      /* Add enough room so that the buffer is aligned and has room
+         for byte sentinels fore and aft, and so that a uword can
+         be read aft.  */
+      newalloc = newsize + pagesize + sizeof (uword);
+
+      newbuf = bufalloc < newalloc ? xmalloc (bufalloc = newalloc) : buffer;
+      readbuf = ALIGN_TO (newbuf + 1 + save, pagesize);
+      size_t moved = save + 1;  /* Move the preceding byte sentinel too.  */
+      memmove (readbuf - moved, buflim - moved, moved);
+      if (newbuf != buffer)
+        {
+          free (buffer);
+          buffer = newbuf;
+        }
+    }
+
+  bufbeg = readbuf - save;
+
+  clear_asan_poison ();
+
+  readsize = buffer + bufalloc - sizeof (uword) - readbuf;
+  readsize -= readsize % pagesize;
+
+  while (true)
+    {
+      fillsize = safe_read (bufdesc, readbuf, readsize);
+      if (fillsize == SAFE_READ_ERROR)
+        {
+          fillsize = 0;
+          cc = false;
+        }
+      bufoffset += fillsize;
+
+      if (((fillsize == 0) | !skip_nuls) || !all_zeros (readbuf, fillsize))
+        break;
+      totalnl = add_count (totalnl, fillsize);
+
+      if (SEEK_DATA != SEEK_SET && !seek_data_failed)
+        {
+          /* Solaris SEEK_DATA fails with errno == ENXIO in a hole at EOF.  */
+          off_t data_start = lseek (bufdesc, bufoffset, SEEK_DATA);
+          if (data_start < 0 && errno == ENXIO
+              && usable_st_size (st) && bufoffset < st->st_size)
+            data_start = lseek (bufdesc, 0, SEEK_END);
+
+          if (data_start < 0)
+            seek_data_failed = true;
+          else
+            {
+              totalnl = add_count (totalnl, data_start - bufoffset);
+              bufoffset = data_start;
+            }
+        }
+    }
+
+  buflim = readbuf + fillsize;
+
+  /* Initialize the following word, because skip_easy_bytes and some
+     matchers read (but do not use) those bytes.  This avoids false
+     positive reports of these bytes being used uninitialized.  */
+  memset (buflim, 0, sizeof (uword));
+
+  /* Mark the part of the buffer not filled by the read or set by
+     the above memset call as ASAN-poisoned.  */
+  asan_poison (buflim + sizeof (uword),
+               bufalloc - (buflim - buffer) - sizeof (uword));
+
+  return cc;
+}
+
+/* Flags controlling the style of output. */
+static enum
+{
+  BINARY_BINARY_FILES,
+  TEXT_BINARY_FILES,
+  WITHOUT_MATCH_BINARY_FILES
+} binary_files;		/* How to handle binary files.  */
+
+/* Options for output as a list of matching/non-matching files */
+static enum
+{
+  LISTFILES_NONE,
+  LISTFILES_MATCHING,
+  LISTFILES_NONMATCHING,
+} list_files;
+
+/* Whether to output filenames.  1 means yes, 0 means no, and -1 means
+   'grep -r PATTERN FILE' was used and it is not known yet whether
+   FILE is a directory (which means yes) or not (which means no).  */
+static int out_file;
+
+static int filename_mask;	/* If zero, output nulls after filenames.  */
+static bool out_quiet;		/* Suppress all normal output. */
+static bool out_invert;		/* Print nonmatching stuff. */
+static bool out_line;		/* Print line numbers. */
+static bool out_byte;		/* Print byte offsets. */
+static intmax_t out_before;	/* Lines of leading context. */
+static intmax_t out_after;	/* Lines of trailing context. */
+static bool count_matches;	/* Count matching lines.  */
+static intmax_t max_count;	/* Max number of selected
+                                   lines from an input file.  */
+static bool line_buffered;	/* Use line buffering.  */
+static char *label = NULL;      /* Fake filename for stdin */
+
+
+/* Internal variables to keep track of byte count, context, etc. */
+static uintmax_t totalcc;	/* Total character count before bufbeg. */
+static char const *lastnl;	/* Pointer after last newline counted. */
+static char *lastout;		/* Pointer after last character output;
+                                   NULL if no character has been output
+                                   or if it's conceptually before bufbeg. */
+static intmax_t outleft;	/* Maximum number of selected lines.  */
+static intmax_t pending;	/* Pending lines of output.
+                                   Always kept 0 if out_quiet is true.  */
+static bool done_on_match;	/* Stop scanning file on first match.  */
+static bool exit_on_match;	/* Exit on first match.  */
+static bool dev_null_output;	/* Stdout is known to be /dev/null.  */
+static bool binary;		/* Use binary rather than text I/O.  */
+
+static void
+nlscan (char const *lim)
+{
+  size_t newlines = 0;
+  for (char const *beg = lastnl; beg < lim; beg++)
+    {
+      beg = memchr (beg, eolbyte, lim - beg);
+      if (!beg)
+        break;
+      newlines++;
+    }
+  totalnl = add_count (totalnl, newlines);
+  lastnl = lim;
+}
+
+/* Print the current filename.  */
+static void
+print_filename (void)
+{
+  pr_sgr_start_if (filename_color);
+  fputs_errno (input_filename ());
+  pr_sgr_end_if (filename_color);
+}
+
+/* Print a character separator.  */
+static void
+print_sep (char sep)
+{
+  pr_sgr_start_if (sep_color);
+  putchar_errno (sep);
+  pr_sgr_end_if (sep_color);
+}
+
+/* Print a line number or a byte offset.  */
+static void
+print_offset (uintmax_t pos, const char *color)
+{
+  pr_sgr_start_if (color);
+  printf_errno ("%*"PRIuMAX, offset_width, pos);
+  pr_sgr_end_if (color);
+}
+
+/* Print a whole line head (filename, line, byte).  The output data
+   starts at BEG and contains LEN bytes; it is followed by at least
+   sizeof (uword) bytes, the first of which may be temporarily modified.
+   The output data comes from what is perhaps a larger input line that
+   goes until LIM, where LIM[-1] is an end-of-line byte.  Use SEP as
+   the separator on output.
+
+   Return true unless the line was suppressed due to an encoding error.  */
+
+static bool
+print_line_head (char *beg, size_t len, char const *lim, char sep)
+{
+  if (binary_files != TEXT_BINARY_FILES)
+    {
+      char ch = beg[len];
+      bool encoding_errors = buf_has_encoding_errors (beg, len);
+      beg[len] = ch;
+      if (encoding_errors)
+        {
+          encoding_error_output = true;
+          return false;
+        }
+    }
+
+  if (out_file)
+    {
+      print_filename ();
+      if (filename_mask)
+        print_sep (sep);
+      else
+        putchar_errno (0);
+    }
+
+  if (out_line)
+    {
+      if (lastnl < lim)
+        {
+          nlscan (beg);
+          totalnl = add_count (totalnl, 1);
+          lastnl = lim;
+        }
+      print_offset (totalnl, line_num_color);
+      print_sep (sep);
+    }
+
+  if (out_byte)
+    {
+      uintmax_t pos = add_count (totalcc, beg - bufbeg);
+      print_offset (pos, byte_num_color);
+      print_sep (sep);
+    }
+
+  if (align_tabs && (out_file | out_line | out_byte) && len != 0)
+    putchar_errno ('\t');
+
+  return true;
+}
+
+static char *
+print_line_middle (char *beg, char *lim,
+                   const char *line_color, const char *match_color)
+{
+  size_t match_size;
+  size_t match_offset;
+  char *cur;
+  char *mid = NULL;
+  char *b;
+
+  for (cur = beg;
+       (cur < lim
+        && ((match_offset = execute (compiled_pattern, beg, lim - beg,
+                                     &match_size, cur)) != (size_t) -1));
+       cur = b + match_size)
+    {
+      b = beg + match_offset;
+
+      /* Avoid matching the empty line at the end of the buffer. */
+      if (b == lim)
+        break;
+
+      /* Avoid hanging on grep --color "" foo */
+      if (match_size == 0)
+        {
+          /* Make minimal progress; there may be further non-empty matches.  */
+          /* XXX - Could really advance by one whole multi-octet character.  */
+          match_size = 1;
+          if (!mid)
+            mid = cur;
+        }
+      else
+        {
+          /* This function is called on a matching line only,
+             but is it selected or rejected/context?  */
+          if (only_matching)
+            {
+              char sep = out_invert ? SEP_CHAR_REJECTED : SEP_CHAR_SELECTED;
+              if (! print_line_head (b, match_size, lim, sep))
+                return NULL;
+            }
+          else
+            {
+              pr_sgr_start (line_color);
+              if (mid)
+                {
+                  cur = mid;
+                  mid = NULL;
+                }
+              fwrite_errno (cur, 1, b - cur);
+            }
+
+          pr_sgr_start_if (match_color);
+          fwrite_errno (b, 1, match_size);
+          pr_sgr_end_if (match_color);
+          if (only_matching)
+            putchar_errno (eolbyte);
+        }
+    }
+
+  if (only_matching)
+    cur = lim;
+  else if (mid)
+    cur = mid;
+
+  return cur;
+}
+
+static char *
+print_line_tail (char *beg, const char *lim, const char *line_color)
+{
+  size_t eol_size;
+  size_t tail_size;
+
+  eol_size   = (lim > beg && lim[-1] == eolbyte);
+  eol_size  += (lim - eol_size > beg && lim[-(1 + eol_size)] == '\r');
+  tail_size  =  lim - eol_size - beg;
+
+  if (tail_size > 0)
+    {
+      pr_sgr_start (line_color);
+      fwrite_errno (beg, 1, tail_size);
+      beg += tail_size;
+      pr_sgr_end (line_color);
+    }
+
+  return beg;
+}
+
+static void
+prline (char *beg, char *lim, char sep)
+{
+  bool matching;
+  const char *line_color;
+  const char *match_color;
+
+  if (!only_matching)
+    if (! print_line_head (beg, lim - beg - 1, lim, sep))
+      return;
+
+  matching = (sep == SEP_CHAR_SELECTED) ^ out_invert;
+
+  if (color_option)
+    {
+      line_color = (((sep == SEP_CHAR_SELECTED)
+                     ^ (out_invert && (color_option < 0)))
+                    ? selected_line_color  : context_line_color);
+      match_color = (sep == SEP_CHAR_SELECTED
+                     ? selected_match_color : context_match_color);
+    }
+  else
+    line_color = match_color = NULL; /* Shouldn't be used.  */
+
+  if ((only_matching && matching)
+      || (color_option && (*line_color || *match_color)))
+    {
+      /* We already know that non-matching lines have no match (to colorize). */
+      if (matching && (only_matching || *match_color))
+        {
+          beg = print_line_middle (beg, lim, line_color, match_color);
+          if (! beg)
+            return;
+        }
+
+      if (!only_matching && *line_color)
+        {
+          /* This code is exercised at least when grep is invoked like this:
+             echo k| GREP_COLORS='sl=01;32' src/grep k --color=always  */
+          beg = print_line_tail (beg, lim, line_color);
+        }
+    }
+
+  if (!only_matching && lim > beg)
+    fwrite_errno (beg, 1, lim - beg);
+
+  if (line_buffered)
+    fflush_errno ();
+
+  if (stdout_errno)
+    die (EXIT_TROUBLE, stdout_errno, _("write error"));
+
+  lastout = lim;
+}
+
+/* Print pending lines of trailing context prior to LIM.  */
+static void
+prpending (char const *lim)
+{
+  if (!lastout)
+    lastout = bufbeg;
+  for (; 0 < pending && lastout < lim; pending--)
+    {
+      char *nl = rawmemchr (lastout, eolbyte);
+      prline (lastout, nl + 1, SEP_CHAR_REJECTED);
+    }
+}
+
+/* Output the lines between BEG and LIM.  Deal with context.  */
+static void
+prtext (char *beg, char *lim)
+{
+  static bool used;	/* Avoid printing SEP_STR_GROUP before any output.  */
+  char eol = eolbyte;
+
+  if (!out_quiet && pending > 0)
+    prpending (beg);
+
+  char *p = beg;
+
+  if (!out_quiet)
+    {
+      /* Deal with leading context.  */
+      char const *bp = lastout ? lastout : bufbeg;
+      intmax_t i;
+      for (i = 0; i < out_before; ++i)
+        if (p > bp)
+          do
+            --p;
+          while (p[-1] != eol);
+
+      /* Print the group separator unless the output is adjacent to
+         the previous output in the file.  */
+      if ((0 <= out_before || 0 <= out_after) && used
+          && p != lastout && group_separator)
+        {
+          pr_sgr_start_if (sep_color);
+          fputs_errno (group_separator);
+          pr_sgr_end_if (sep_color);
+          putchar_errno ('\n');
+        }
+
+      while (p < beg)
+        {
+          char *nl = rawmemchr (p, eol);
+          nl++;
+          prline (p, nl, SEP_CHAR_REJECTED);
+          p = nl;
+        }
+    }
+
+  intmax_t n;
+  if (out_invert)
+    {
+      /* One or more lines are output.  */
+      for (n = 0; p < lim && n < outleft; n++)
+        {
+          char *nl = rawmemchr (p, eol);
+          nl++;
+          if (!out_quiet)
+            prline (p, nl, SEP_CHAR_SELECTED);
+          p = nl;
+        }
+    }
+  else
+    {
+      /* Just one line is output.  */
+      if (!out_quiet)
+        prline (beg, lim, SEP_CHAR_SELECTED);
+      n = 1;
+      p = lim;
+    }
+
+  after_last_match = bufoffset - (buflim - p);
+  pending = out_quiet ? 0 : MAX (0, out_after);
+  used = true;
+  outleft -= n;
+}
+
+/* Replace all NUL bytes in buffer P (which ends at LIM) with EOL.
+   This avoids running out of memory when binary input contains a long
+   sequence of zeros, which would otherwise be considered to be part
+   of a long line.  P[LIM] should be EOL.  */
+static void
+zap_nuls (char *p, char *lim, char eol)
+{
+  if (eol)
+    while (true)
+      {
+        *lim = '\0';
+        p += strlen (p);
+        *lim = eol;
+        if (p == lim)
+          break;
+        do
+          *p++ = eol;
+        while (!*p);
+      }
+}
+
+/* Scan the specified portion of the buffer, matching lines (or
+   between matching lines if OUT_INVERT is true).  Return a count of
+   lines printed.  Replace all NUL bytes with NUL_ZAPPER as we go.  */
+static intmax_t
+grepbuf (char *beg, char const *lim)
+{
+  intmax_t outleft0 = outleft;
+  char *endp;
+
+  for (char *p = beg; p < lim; p = endp)
+    {
+      size_t match_size;
+      size_t match_offset = execute (compiled_pattern, p, lim - p,
+                                     &match_size, NULL);
+      if (match_offset == (size_t) -1)
+        {
+          if (!out_invert)
+            break;
+          match_offset = lim - p;
+          match_size = 0;
+        }
+      char *b = p + match_offset;
+      endp = b + match_size;
+      /* Avoid matching the empty line at the end of the buffer. */
+      if (!out_invert && b == lim)
+        break;
+      if (!out_invert || p < b)
+        {
+          char *prbeg = out_invert ? p : b;
+          char *prend = out_invert ? b : endp;
+          prtext (prbeg, prend);
+          if (!outleft || done_on_match)
+            {
+              if (exit_on_match)
+                exit (errseen ? exit_failure : EXIT_SUCCESS);
+              break;
+            }
+        }
+    }
+
+  return outleft0 - outleft;
+}
+
+/* Search a given (non-directory) file.  Return a count of lines printed.
+   Set *INEOF to true if end-of-file reached.  */
+static intmax_t
+grep (int fd, struct stat const *st, bool *ineof)
+{
+  intmax_t nlines, i;
+  size_t residue, save;
+  char oldc;
+  char *beg;
+  char *lim;
+  char eol = eolbyte;
+  char nul_zapper = '\0';
+  bool done_on_match_0 = done_on_match;
+  bool out_quiet_0 = out_quiet;
+
+  /* The value of NLINES when nulls were first deduced in the input;
+     this is not necessarily the same as the number of matching lines
+     before the first null.  -1 if no input nulls have been deduced.  */
+  intmax_t nlines_first_null = -1;
+
+  if (! reset (fd, st))
+    return 0;
+
+  totalcc = 0;
+  lastout = 0;
+  totalnl = 0;
+  outleft = max_count;
+  after_last_match = 0;
+  pending = 0;
+  skip_nuls = skip_empty_lines && !eol;
+  encoding_error_output = false;
+
+  nlines = 0;
+  residue = 0;
+  save = 0;
+
+  if (! fillbuf (save, st))
+    {
+      suppressible_error (errno);
+      return 0;
+    }
+
+  offset_width = 0;
+  if (align_tabs)
+    {
+      /* Width is log of maximum number.  Line numbers are origin-1.  */
+      uintmax_t num = usable_st_size (st) ? st->st_size : UINTMAX_MAX;
+      num += out_line && num < UINTMAX_MAX;
+      do
+        offset_width++;
+      while ((num /= 10) != 0);
+    }
+
+  for (bool firsttime = true; ; firsttime = false)
+    {
+      if (nlines_first_null < 0 && eol && binary_files != TEXT_BINARY_FILES
+          && (buf_has_nulls (bufbeg, buflim - bufbeg)
+              || (firsttime && file_must_have_nulls (buflim - bufbeg, fd, st))))
+        {
+          if (binary_files == WITHOUT_MATCH_BINARY_FILES)
+            return 0;
+          if (!count_matches)
+            done_on_match = out_quiet = true;
+          nlines_first_null = nlines;
+          nul_zapper = eol;
+          skip_nuls = skip_empty_lines;
+        }
+
+      lastnl = bufbeg;
+      if (lastout)
+        lastout = bufbeg;
+
+      beg = bufbeg + save;
+
+      /* no more data to scan (eof) except for maybe a residue -> break */
+      if (beg == buflim)
+        {
+          *ineof = true;
+          break;
+        }
+
+      zap_nuls (beg, buflim, nul_zapper);
+
+      /* Determine new residue (the length of an incomplete line at the end of
+         the buffer, 0 means there is no incomplete last line).  */
+      oldc = beg[-1];
+      beg[-1] = eol;
+      /* FIXME: use rawmemrchr if/when it exists, since we have ensured
+         that this use of memrchr is guaranteed never to return NULL.  */
+      lim = memrchr (beg - 1, eol, buflim - beg + 1);
+      ++lim;
+      beg[-1] = oldc;
+      if (lim == beg)
+        lim = beg - residue;
+      beg -= residue;
+      residue = buflim - lim;
+
+      if (beg < lim)
+        {
+          if (outleft)
+            nlines += grepbuf (beg, lim);
+          if (pending)
+            prpending (lim);
+          if ((!outleft && !pending)
+              || (done_on_match && MAX (0, nlines_first_null) < nlines))
+            goto finish_grep;
+        }
+
+      /* The last OUT_BEFORE lines at the end of the buffer will be needed as
+         leading context if there is a matching line at the begin of the
+         next data. Make beg point to their begin.  */
+      i = 0;
+      beg = lim;
+      while (i < out_before && beg > bufbeg && beg != lastout)
+        {
+          ++i;
+          do
+            --beg;
+          while (beg[-1] != eol);
+        }
+
+      /* Detect whether leading context is adjacent to previous output.  */
+      if (beg != lastout)
+        lastout = 0;
+
+      /* Handle some details and read more data to scan.  */
+      save = residue + lim - beg;
+      if (out_byte)
+        totalcc = add_count (totalcc, buflim - bufbeg - save);
+      if (out_line)
+        nlscan (beg);
+      if (! fillbuf (save, st))
+        {
+          suppressible_error (errno);
+          goto finish_grep;
+        }
+    }
+  if (residue)
+    {
+      *buflim++ = eol;
+      if (outleft)
+        nlines += grepbuf (bufbeg + save - residue, buflim);
+      if (pending)
+        prpending (buflim);
+    }
+
+ finish_grep:
+  done_on_match = done_on_match_0;
+  out_quiet = out_quiet_0;
+  if (binary_files == BINARY_BINARY_FILES && ! (out_quiet | suppress_errors)
+      && (encoding_error_output
+          || (0 <= nlines_first_null && nlines_first_null < nlines)))
+    error (0, 0, _("%s: binary file matches"), input_filename ());
+  return nlines;
+}
+
+static bool
+grepdirent (FTS *fts, FTSENT *ent, bool command_line)
+{
+  bool follow;
+  command_line &= ent->fts_level == FTS_ROOTLEVEL;
+
+  if (ent->fts_info == FTS_DP)
+    return true;
+
+  if (!command_line
+      && skipped_file (ent->fts_name, false,
+                       (ent->fts_info == FTS_D || ent->fts_info == FTS_DC
+                        || ent->fts_info == FTS_DNR)))
+    {
+      fts_set (fts, ent, FTS_SKIP);
+      return true;
+    }
+
+  filename = ent->fts_path;
+  if (omit_dot_slash && filename[1])
+    filename += 2;
+  follow = (fts->fts_options & FTS_LOGICAL
+            || (fts->fts_options & FTS_COMFOLLOW && command_line));
+
+  switch (ent->fts_info)
+    {
+    case FTS_D:
+      if (directories == RECURSE_DIRECTORIES)
+        return true;
+      fts_set (fts, ent, FTS_SKIP);
+      break;
+
+    case FTS_DC:
+      if (!suppress_errors)
+        error (0, 0, _("%s: warning: recursive directory loop"), filename);
+      return true;
+
+    case FTS_DNR:
+    case FTS_ERR:
+    case FTS_NS:
+      suppressible_error (ent->fts_errno);
+      return true;
+
+    case FTS_DEFAULT:
+    case FTS_NSOK:
+      if (skip_devices (command_line))
+        {
+          struct stat *st = ent->fts_statp;
+#if !defined(KMK_GREP) || !defined(_MSC_VER) /** @todo revisit this */
+          struct stat st1;
+          if (! st->st_mode)
+            {
+              /* The file type is not already known.  Get the file status
+                 before opening, since opening might have side effects
+                 on a device.  */
+              int flag = follow ? 0 : AT_SYMLINK_NOFOLLOW;
+              if (fstatat (fts->fts_cwd_fd, ent->fts_accpath, &st1, flag) != 0)
+                {
+                  suppressible_error (errno);
+                  return true;
+                }
+              st = &st1;
+            }
+#endif
+          if (is_device_mode (st->st_mode))
+            return true;
+        }
+      break;
+
+    case FTS_F:
+    case FTS_SLNONE:
+      break;
+
+    case FTS_SL:
+    case FTS_W:
+      return true;
+
+    default:
+      abort ();
+    }
+
+  return grepfile (fts->fts_cwd_fd, ent->fts_accpath, follow, command_line);
+}
+
+/* True if errno is ERR after 'open ("symlink", ... O_NOFOLLOW ...)'.
+   POSIX specifies ELOOP, but it's EMLINK on FreeBSD and EFTYPE on NetBSD.  */
+static bool
+open_symlink_nofollow_error (int err)
+{
+  if (err == ELOOP || err == EMLINK)
+    return true;
+#ifdef EFTYPE
+  if (err == EFTYPE)
+    return true;
+#endif
+  return false;
+}
+
+static bool
+grepfile (int dirdesc, char const *name, bool follow, bool command_line)
+{
+  int oflag = (O_RDONLY | O_NOCTTY
+               | (IGNORE_DUPLICATE_BRANCH_WARNING
+                  (binary ? O_BINARY : 0))
+               | (follow ? 0 : O_NOFOLLOW)
+               | (skip_devices (command_line) ? O_NONBLOCK : 0));
+  int desc = openat_safer (dirdesc, name, oflag);
+  if (desc < 0)
+    {
+      if (follow || ! open_symlink_nofollow_error (errno))
+        suppressible_error (errno);
+      return true;
+    }
+  return grepdesc (desc, command_line);
+}
+
+/* Read all data from FD, with status ST.  Return true if successful,
+   false (setting errno) otherwise.  */
+static bool
+drain_input (int fd, struct stat const *st)
+{
+  ssize_t nbytes;
+  if (S_ISFIFO (st->st_mode) && dev_null_output)
+    {
+#ifdef SPLICE_F_MOVE
+      /* Should be faster, since it need not copy data to user space.  */
+      nbytes = splice (fd, NULL, STDOUT_FILENO, NULL,
+                       INITIAL_BUFSIZE, SPLICE_F_MOVE);
+      if (0 <= nbytes || errno != EINVAL)
+        {
+          while (0 < nbytes)
+            nbytes = splice (fd, NULL, STDOUT_FILENO, NULL,
+                             INITIAL_BUFSIZE, SPLICE_F_MOVE);
+          return nbytes == 0;
+        }
+#endif
+    }
+  while ((nbytes = safe_read (fd, buffer, bufalloc)))
+    if (nbytes == SAFE_READ_ERROR)
+      return false;
+  return true;
+}
+
+/* Finish reading from FD, with status ST and where end-of-file has
+   been seen if INEOF.  Typically this is a no-op, but when reading
+   from standard input this may adjust the file offset or drain a
+   pipe.  */
+
+static void
+finalize_input (int fd, struct stat const *st, bool ineof)
+{
+  if (fd == STDIN_FILENO
+      && (outleft
+          ? (!ineof
+             && (seek_failed
+                 || (lseek (fd, 0, SEEK_END) < 0
+                     /* Linux proc file system has EINVAL (Bug#25180).  */
+                     && errno != EINVAL))
+             && ! drain_input (fd, st))
+          : (bufoffset != after_last_match && !seek_failed
+             && lseek (fd, after_last_match, SEEK_SET) < 0)))
+    suppressible_error (errno);
+}
+
+static bool
+grepdesc (int desc, bool command_line)
+{
+  intmax_t count;
+  bool status = true;
+  bool ineof = false;
+  struct stat st;
+
+  /* Get the file status, possibly for the second time.  This catches
+     a race condition if the directory entry changes after the
+     directory entry is read and before the file is opened.  For
+     example, normally DESC is a directory only at the top level, but
+     there is an exception if some other process substitutes a
+     directory for a non-directory while 'grep' is running.  */
+  if (fstat (desc, &st) != 0)
+    {
+      suppressible_error (errno);
+      goto closeout;
+    }
+
+  if (desc != STDIN_FILENO && skip_devices (command_line)
+      && is_device_mode (st.st_mode))
+    goto closeout;
+
+  if (desc != STDIN_FILENO && command_line
+      && skipped_file (filename, true, S_ISDIR (st.st_mode) != 0))
+    goto closeout;
+
+  /* Don't output file names if invoked as 'grep -r PATTERN NONDIRECTORY'.  */
+  if (out_file < 0)
+    out_file = !!S_ISDIR (st.st_mode);
+
+  if (desc != STDIN_FILENO
+      && directories == RECURSE_DIRECTORIES && S_ISDIR (st.st_mode))
+    {
+      /* Traverse the directory starting with its full name, because
+         unfortunately fts provides no way to traverse the directory
+         starting from its file descriptor.  */
+
+      FTS *fts;
+      FTSENT *ent;
+      int opts = fts_options & ~(command_line ? 0 : FTS_COMFOLLOW);
+      char *fts_arg[2];
+
+      /* Close DESC now, to conserve file descriptors if the race
+         condition occurs many times in a deep recursion.  */
+      if (close (desc) != 0)
+        suppressible_error (errno);
+
+      fts_arg[0] = (char *) filename;
+      fts_arg[1] = NULL;
+      fts = fts_open (fts_arg, opts, NULL);
+
+      if (!fts)
+        xalloc_die ();
+      while ((ent = fts_read (fts)))
+        status &= grepdirent (fts, ent, command_line);
+      if (errno)
+        suppressible_error (errno);
+      if (fts_close (fts) != 0)
+        suppressible_error (errno);
+      return status;
+    }
+  if (desc != STDIN_FILENO
+      && ((directories == SKIP_DIRECTORIES && S_ISDIR (st.st_mode))
+          || ((devices == SKIP_DEVICES
+               || (devices == READ_COMMAND_LINE_DEVICES && !command_line))
+              && is_device_mode (st.st_mode))))
+    goto closeout;
+
+  /* If there is a regular file on stdout and the current file refers
+     to the same i-node, we have to report the problem and skip it.
+     Otherwise when matching lines from some other input reach the
+     disk before we open this file, we can end up reading and matching
+     those lines and appending them to the file from which we're reading.
+     Then we'd have what appears to be an infinite loop that'd terminate
+     only upon filling the output file system or reaching a quota.
+     However, there is no risk of an infinite loop if grep is generating
+     no output, i.e., with --silent, --quiet, -q.
+     Similarly, with any of these:
+       --max-count=N (-m) (for N >= 2)
+       --files-with-matches (-l)
+       --files-without-match (-L)
+     there is no risk of trouble.
+     For --max-count=1, grep stops after printing the first match,
+     so there is no risk of malfunction.  But even --max-count=2, with
+     input==output, while there is no risk of infloop, there is a race
+     condition that could result in "alternate" output.  */
+  if (!out_quiet && list_files == LISTFILES_NONE && 1 < max_count
+      && S_ISREG (st.st_mode) && SAME_INODE (st, out_stat))
+    {
+      if (! suppress_errors)
+        error (0, 0, _("%s: input file is also the output"), input_filename ());
+      errseen = true;
+      goto closeout;
+    }
+
+  count = grep (desc, &st, &ineof);
+  if (count_matches)
+    {
+      if (out_file)
+        {
+          print_filename ();
+          if (filename_mask)
+            print_sep (SEP_CHAR_SELECTED);
+          else
+            putchar_errno (0);
+        }
+      printf_errno ("%" PRIdMAX "\n", count);
+      if (line_buffered)
+        fflush_errno ();
+    }
+
+  status = !count;
+
+  if (list_files == LISTFILES_NONE)
+    finalize_input (desc, &st, ineof);
+  else if (list_files == (status ? LISTFILES_NONMATCHING : LISTFILES_MATCHING))
+    {
+      print_filename ();
+      putchar_errno ('\n' & filename_mask);
+      if (line_buffered)
+        fflush_errno ();
+    }
+
+ closeout:
+  if (desc != STDIN_FILENO && close (desc) != 0)
+    suppressible_error (errno);
+  return status;
+}
+
+static bool
+grep_command_line_arg (char const *arg)
+{
+  if (STREQ (arg, "-"))
+    {
+      filename = label;
+      if (binary)
+        xset_binary_mode (STDIN_FILENO, O_BINARY);
+      return grepdesc (STDIN_FILENO, true);
+    }
+  else
+    {
+      filename = arg;
+      return grepfile (AT_FDCWD, arg, true, true);
+    }
+}
+
+_Noreturn void usage (int);
+void
+usage (int status)
+{
+  if (status != 0)
+    {
+      fprintf (stderr, _("Usage: %s [OPTION]... PATTERNS [FILE]...\n"),
+               getprogname ());
+      fprintf (stderr, _("Try '%s --help' for more information.\n"),
+               getprogname ());
+    }
+  else
+    {
+      printf (_("Usage: %s [OPTION]... PATTERNS [FILE]...\n"), getprogname ());
+      printf (_("Search for PATTERNS in each FILE.\n"));
+      printf (_("\
+Example: %s -i 'hello world' menu.h main.c\n\
+PATTERNS can contain multiple patterns separated by newlines.\n\
+\n\
+Pattern selection and interpretation:\n"), getprogname ());
+      printf (_("\
+  -E, --extended-regexp     PATTERNS are extended regular expressions\n\
+  -F, --fixed-strings       PATTERNS are strings\n\
+  -G, --basic-regexp        PATTERNS are basic regular expressions\n\
+  -P, --perl-regexp         PATTERNS are Perl regular expressions\n"));
+  /* -X is deliberately undocumented.  */
+      printf (_("\
+  -e, --regexp=PATTERNS     use PATTERNS for matching\n\
+  -f, --file=FILE           take PATTERNS from FILE\n\
+  -i, --ignore-case         ignore case distinctions in patterns and data\n\
+      --no-ignore-case      do not ignore case distinctions (default)\n\
+  -w, --word-regexp         match only whole words\n\
+  -x, --line-regexp         match only whole lines\n\
+  -z, --null-data           a data line ends in 0 byte, not newline\n"));
+      printf (_("\
+\n\
+Miscellaneous:\n\
+  -s, --no-messages         suppress error messages\n\
+  -v, --invert-match        select non-matching lines\n\
+  -V, --version             display version information and exit\n\
+      --help                display this help text and exit\n"));
+      printf (_("\
+\n\
+Output control:\n\
+  -m, --max-count=NUM       stop after NUM selected lines\n\
+  -b, --byte-offset         print the byte offset with output lines\n\
+  -n, --line-number         print line number with output lines\n\
+      --line-buffered       flush output on every line\n\
+  -H, --with-filename       print file name with output lines\n\
+  -h, --no-filename         suppress the file name prefix on output\n\
+      --label=LABEL         use LABEL as the standard input file name prefix\n\
+"));
+      printf (_("\
+  -o, --only-matching       show only nonempty parts of lines that match\n\
+  -q, --quiet, --silent     suppress all normal output\n\
+      --binary-files=TYPE   assume that binary files are TYPE;\n\
+                            TYPE is 'binary', 'text', or 'without-match'\n\
+  -a, --text                equivalent to --binary-files=text\n\
+"));
+      printf (_("\
+  -I                        equivalent to --binary-files=without-match\n\
+  -d, --directories=ACTION  how to handle directories;\n\
+                            ACTION is 'read', 'recurse', or 'skip'\n\
+  -D, --devices=ACTION      how to handle devices, FIFOs and sockets;\n\
+                            ACTION is 'read' or 'skip'\n\
+  -r, --recursive           like --directories=recurse\n\
+  -R, --dereference-recursive  likewise, but follow all symlinks\n\
+"));
+      printf (_("\
+      --include=GLOB        search only files that match GLOB (a file pattern)"
+                "\n\
+      --exclude=GLOB        skip files that match GLOB\n\
+      --exclude-from=FILE   skip files that match any file pattern from FILE\n\
+      --exclude-dir=GLOB    skip directories that match GLOB\n\
+"));
+      printf (_("\
+  -L, --files-without-match  print only names of FILEs with no selected lines\n\
+  -l, --files-with-matches  print only names of FILEs with selected lines\n\
+  -c, --count               print only a count of selected lines per FILE\n\
+  -T, --initial-tab         make tabs line up (if needed)\n\
+  -Z, --null                print 0 byte after FILE name\n"));
+      printf (_("\
+\n\
+Context control:\n\
+  -B, --before-context=NUM  print NUM lines of leading context\n\
+  -A, --after-context=NUM   print NUM lines of trailing context\n\
+  -C, --context=NUM         print NUM lines of output context\n\
+"));
+      printf (_("\
+  -NUM                      same as --context=NUM\n\
+      --group-separator=SEP  print SEP on line between matches with context\n\
+      --no-group-separator  do not print separator for matches with context\n\
+      --color[=WHEN],\n\
+      --colour[=WHEN]       use markers to highlight the matching strings;\n\
+                            WHEN is 'always', 'never', or 'auto'\n\
+  -U, --binary              do not strip CR characters at EOL (MSDOS/Windows)\n\
+\n"));
+#ifdef KMK_GREP
+      printf (_("\
+kmk_grep extensions:\n\
+  --codepage=NUM            switches the locale to the given codepage, \n\
+                            affecting how input files are treated and outputted\n\
+                            windows only, ignored elsewhere\n\
+  --utf8                    shorthand for --codepage=UTF8\n\
+\n"));
+#endif
+      printf (_("\
+When FILE is '-', read standard input.  With no FILE, read '.' if\n\
+recursive, '-' otherwise.  With fewer than two FILEs, assume -h.\n\
+Exit status is 0 if any line is selected, 1 otherwise;\n\
+if any error occurs and -q is not given, the exit status is 2.\n"));
+      emit_bug_reporting_address ();
+    }
+  exit (status);
+}
+
+/* Pattern compilers and matchers.  */
+
+static struct
+{
+  char name[12];
+  int syntax; /* used if compile == GEAcompile */
+  compile_fp_t compile;
+  execute_fp_t execute;
+} const matchers[] = {
+  { "grep",     RE_SYNTAX_GREP,      (compile_fp_t)GEAcompile,  (execute_fp_t)EGexecute },
+  { "egrep",    RE_SYNTAX_EGREP,     (compile_fp_t)GEAcompile,  (execute_fp_t)EGexecute },
+  { "fgrep",    0,                   (compile_fp_t)Fcompile,    (execute_fp_t)Fexecute },
+  { "awk",      RE_SYNTAX_AWK,       (compile_fp_t)GEAcompile,  (execute_fp_t)EGexecute },
+  { "gawk",     RE_SYNTAX_GNU_AWK,   (compile_fp_t)GEAcompile,  (execute_fp_t)EGexecute },
+  { "posixawk", RE_SYNTAX_POSIX_AWK, (compile_fp_t)GEAcompile,  (execute_fp_t)EGexecute },
+#if HAVE_LIBPCRE
+  { "perl",     0,                   (compile_fp_t)Pcompile,    (execute_fp_t)Pexecute },
+#endif
+};
+/* Keep these in sync with the 'matchers' table.  */
+enum { E_MATCHER_INDEX = 1, F_MATCHER_INDEX = 2, G_MATCHER_INDEX = 0 };
+
+/* Return the index of the matcher corresponding to M if available.
+   MATCHER is the index of the previous matcher, or -1 if none.
+   Exit in case of conflicts or if M is not available.  */
+static int
+setmatcher (char const *m, int matcher)
+{
+  for (int i = 0; i < sizeof matchers / sizeof *matchers; i++)
+    if (STREQ (m, matchers[i].name))
+      {
+        if (0 <= matcher && matcher != i)
+          die (EXIT_TROUBLE, 0, _("conflicting matchers specified"));
+        return i;
+      }
+
+#if !HAVE_LIBPCRE
+  if (STREQ (m, "perl"))
+    die (EXIT_TROUBLE, 0,
+         _("Perl matching not supported in a --disable-perl-regexp build"));
+#endif
+  die (EXIT_TROUBLE, 0, _("invalid matcher %s"), m);
+}
+
+/* Get the next non-digit option from ARGC and ARGV.
+   Return -1 if there are no more options.
+   Process any digit options that were encountered on the way,
+   and store the resulting integer into *DEFAULT_CONTEXT.  */
+static int
+get_nondigit_option (int argc, char *const *argv, intmax_t *default_context)
+{
+  static int prev_digit_optind = -1;
+  int this_digit_optind;
+  bool was_digit;
+  char buf[INT_BUFSIZE_BOUND (intmax_t) + 4];
+  char *p = buf;
+  int opt;
+
+  was_digit = false;
+  this_digit_optind = optind;
+  while (true)
+    {
+      opt = getopt_long (argc, (char **) argv, short_options,
+                         long_options, NULL);
+      if (! c_isdigit (opt))
+        break;
+
+      if (prev_digit_optind != this_digit_optind || !was_digit)
+        {
+          /* Reset to start another context length argument.  */
+          p = buf;
+        }
+      else
+        {
+          /* Suppress trivial leading zeros, to avoid incorrect
+             diagnostic on strings like 00000000000.  */
+          p -= buf[0] == '0';
+        }
+
+      if (p == buf + sizeof buf - 4)
+        {
+          /* Too many digits.  Append "..." to make context_length_arg
+             complain about "X...", where X contains the digits seen
+             so far.  */
+          strcpy (p, "...");
+          p += 3;
+          break;
+        }
+      *p++ = opt;
+
+      was_digit = true;
+      prev_digit_optind = this_digit_optind;
+      this_digit_optind = optind;
+    }
+  if (p != buf)
+    {
+      *p = '\0';
+      context_length_arg (buf, default_context);
+    }
+
+  return opt;
+}
+
+/* Parse GREP_COLORS.  The default would look like:
+     GREP_COLORS='ms=01;31:mc=01;31:sl=:cx=:fn=35:ln=32:bn=32:se=36'
+   with boolean capabilities (ne and rv) unset (i.e., omitted).
+   No character escaping is needed or supported.  */
+static void
+parse_grep_colors (void)
+{
+  const char *p;
+  char *q;
+  char *name;
+  char *val;
+
+  p = getenv ("GREP_COLORS"); /* Plural! */
+  if (p == NULL || *p == '\0')
+    return;
+
+  /* Work off a writable copy.  */
+  q = xstrdup (p);
+
+  name = q;
+  val = NULL;
+  /* From now on, be well-formed or you're gone.  */
+  for (;;)
+    if (*q == ':' || *q == '\0')
+      {
+        char c = *q;
+        struct color_cap const *cap;
+
+        *q++ = '\0'; /* Terminate name or val.  */
+        /* Empty name without val (empty cap)
+         * won't match and will be ignored.  */
+        for (cap = color_dict; cap->name; cap++)
+          if (STREQ (cap->name, name))
+            break;
+        /* If name unknown, go on for forward compatibility.  */
+        if (cap->var && val)
+          *(cap->var) = val;
+        if (cap->fct)
+          cap->fct ();
+        if (c == '\0')
+          return;
+        name = q;
+        val = NULL;
+      }
+    else if (*q == '=')
+      {
+        if (q == name || val)
+          return;
+        *q++ = '\0'; /* Terminate name.  */
+        val = q; /* Can be the empty string.  */
+      }
+    else if (val == NULL)
+      q++; /* Accumulate name.  */
+    else if (*q == ';' || c_isdigit (*q))
+      q++; /* Accumulate val.  Protect the terminal from being sent crap.  */
+    else
+      return;
+}
+
+/* Return true if PAT (of length PATLEN) contains an encoding error.  */
+static bool
+contains_encoding_error (char const *pat, size_t patlen)
+{
+  mbstate_t mbs = { 0 };
+  size_t i, charlen;
+
+  for (i = 0; i < patlen; i += charlen)
+    {
+      charlen = mb_clen (pat + i, patlen - i, &mbs);
+      if ((size_t) -2 <= charlen)
+        return true;
+    }
+  return false;
+}
+
+/* When ignoring case and (-E or -F or -G), then for each single-byte
+   character I, ok_fold[I] is 1 if every case folded counterpart of I
+   is also single-byte, and is -1 otherwise.  */
+static signed char ok_fold[NCHAR];
+static void
+setup_ok_fold (void)
+{
+  for (int i = 0; i < NCHAR; i++)
+    {
+      wint_t wi = localeinfo.sbctowc[i];
+      if (wi == WEOF)
+        continue;
+
+      int ok = 1;
+      wchar_t folded[CASE_FOLDED_BUFSIZE];
+      for (int n = case_folded_counterparts (wi, folded); 0 <= --n; )
+        {
+          char buf[MB_LEN_MAX];
+          mbstate_t s = { 0 };
+          if (wcrtomb (buf, folded[n], &s) != 1)
+            {
+              ok = -1;
+              break;
+            }
+        }
+      ok_fold[i] = ok;
+    }
+}
+
+/* Return the number of bytes in the initial character of PAT, of size
+   PATLEN, if Fcompile can handle that character.  Return -1 if
+   Fcompile cannot handle it.  MBS is the multibyte conversion state.
+   PATLEN must be nonzero.  */
+
+static int
+fgrep_icase_charlen (char const *pat, size_t patlen, mbstate_t *mbs)
+{
+  unsigned char pat0 = pat[0];
+
+  /* If PAT starts with a single-byte character, Fcompile works if
+     every case folded counterpart is also single-byte.  */
+  if (localeinfo.sbctowc[pat0] != WEOF)
+    return ok_fold[pat0];
+
+  wchar_t wc;
+  size_t wn = mbrtowc (&wc, pat, patlen, mbs);
+
+  /* If PAT starts with an encoding error, Fcompile does not work.  */
+  if (MB_LEN_MAX < wn)
+    return -1;
+
+  /* PAT starts with a multibyte character.  Fcompile works if the
+     character has no case folded counterparts and toupper translates
+     none of its encoding's bytes.  */
+  wchar_t folded[CASE_FOLDED_BUFSIZE];
+  if (case_folded_counterparts (wc, folded))
+    return -1;
+  for (int i = wn; 0 < --i; )
+    {
+      unsigned char c = pat[i];
+      if (toupper (c) != c)
+        return -1;
+    }
+  return wn;
+}
+
+/* Return true if the -F patterns PAT, of size PATLEN, contain only
+   single-byte characters that case-fold only to single-byte
+   characters, or multibyte characters not subject to case folding,
+   and so can be processed by Fcompile.  */
+
+static bool
+fgrep_icase_available (char const *pat, size_t patlen)
+{
+  mbstate_t mbs = {0,};
+
+  for (size_t i = 0; i < patlen; )
+    {
+      int n = fgrep_icase_charlen (pat + i, patlen - i, &mbs);
+      if (n < 0)
+        return false;
+      i += n;
+    }
+
+  return true;
+}
+
+/* Change the pattern *KEYS_P, of size *LEN_P, from fgrep to grep style.  */
+
+void
+fgrep_to_grep_pattern (char **keys_p, size_t *len_p)
+{
+  size_t len = *len_p;
+  char *keys = *keys_p;
+  mbstate_t mb_state = { 0 };
+  char *new_keys = xnmalloc (len + 1, 2);
+  char *p = new_keys;
+  size_t n;
+
+  for (; len; keys += n, len -= n)
+    {
+      n = mb_clen (keys, len, &mb_state);
+      switch (n)
+        {
+        case (size_t) -2:
+          n = len;
+          FALLTHROUGH;
+        default:
+          p = mempcpy (p, keys, n);
+          break;
+
+        case (size_t) -1:
+          memset (&mb_state, 0, sizeof mb_state);
+          n = 1;
+          FALLTHROUGH;
+        case 1:
+          switch (*keys)
+            {
+            case '$': case '*': case '.': case '[': case '\\': case '^':
+              *p++ = '\\'; break;
+            }
+          *p++ = *keys;
+          break;
+        }
+    }
+
+  *p = '\n';
+  free (*keys_p);
+  *keys_p = new_keys;
+  *len_p = p - new_keys;
+}
+
+/* If it is easy, convert the MATCHER-style patterns KEYS (of size
+   *LEN_P) to -F style, update *LEN_P to a possibly-smaller value, and
+   return F_MATCHER_INDEX.  If not, leave KEYS and *LEN_P alone and
+   return MATCHER.  This function is conservative and sometimes misses
+   conversions, e.g., it does not convert the -E pattern "(a|a|[aa])"
+   to the -F pattern "a".  */
+
+static int
+try_fgrep_pattern (int matcher, char *keys, size_t *len_p)
+{
+  int result = matcher;
+  size_t len = *len_p;
+  char *new_keys = xmalloc (len + 1);
+  char *p = new_keys;
+  char const *q = keys;
+  mbstate_t mb_state = { 0 };
+
+  while (len != 0)
+    {
+      switch (*q)
+        {
+        case '$': case '*': case '.': case '[': case '^':
+          goto fail;
+
+        case '(': case '+': case '?': case '{': case '|':
+          /* There is no "case ')'" here, as "grep -E ')'" acts like
+             "grep -E '\)'".  */
+          if (matcher != G_MATCHER_INDEX)
+            goto fail;
+          break;
+
+        case '\\':
+          if (1 < len)
+            switch (q[1])
+              {
+              case '\n':
+              case 'B': case 'S': case 'W': case'\'': case '<':
+              case 'b': case 's': case 'w': case '`': case '>':
+              case '1': case '2': case '3': case '4':
+              case '5': case '6': case '7': case '8': case '9':
+                goto fail;
+
+              case '(': case '+': case '?': case '{': case '|':
+                /* Pass '\)' to GEAcompile so it can complain.  Otherwise,
+                   "grep '\)'" would act like "grep ')'" while "grep '.*\)'
+                   would be an error.  */
+              case ')':
+                if (matcher == G_MATCHER_INDEX)
+                  goto fail;
+                FALLTHROUGH;
+              default:
+                q++, len--;
+                break;
+              }
+          break;
+        }
+
+      {
+        size_t n;
+        if (match_icase)
+          {
+            int ni = fgrep_icase_charlen (q, len, &mb_state);
+            if (ni < 0)
+              goto fail;
+            n = ni;
+          }
+        else
+          {
+            n = mb_clen (q, len, &mb_state);
+            if (MB_LEN_MAX < n)
+              goto fail;
+          }
+
+        p = mempcpy (p, q, n);
+        q += n;
+        len -= n;
+      }
+    }
+
+  if (*len_p != p - new_keys)
+    {
+      *len_p = p - new_keys;
+      char *keys_end = mempcpy (keys, new_keys, p - new_keys);
+      *keys_end = '\n';
+    }
+  result = F_MATCHER_INDEX;
+
+ fail:
+  free (new_keys);
+  return result;
+}
+
+int
+main (int argc, char **argv)
+{
+  char *keys = NULL;
+  size_t keycc = 0, keyalloc = 0;
+  int matcher = -1;
+  int opt;
+  int prev_optind, last_recursive;
+  int fread_errno;
+  intmax_t default_context;
+  FILE *fp;
+  exit_failure = EXIT_TROUBLE;
+  initialize_main (&argc, &argv);
+
+  /* Which command-line options have been specified for filename output.
+     -1 for -h, 1 for -H, 0 for neither.  */
+  int filename_option = 0;
+
+  eolbyte = '\n';
+  filename_mask = ~0;
+
+  max_count = INTMAX_MAX;
+
+  /* The value -1 means to use DEFAULT_CONTEXT. */
+  out_after = out_before = -1;
+  /* Default before/after context: changed by -C/-NUM options */
+  default_context = -1;
+  /* Changed by -o option */
+  only_matching = false;
+
+  /* Internationalization. */
+#if defined HAVE_SETLOCALE
+# if defined(KMK_GREP) && defined(KBUILD_OS_WINDOWS)
+  if (getenv ("KMK_GREP_CODEPAGE"))
+    kmk_grep_set_codepage (getenv ("KMK_GREP_CODEPAGE"));
+  else
+# endif
+    setlocale (LC_ALL, "");
+#endif
+#if defined ENABLE_NLS
+  bindtextdomain (PACKAGE, LOCALEDIR);
+  textdomain (PACKAGE);
+#endif
+
+  init_localeinfo (&localeinfo);
+
+  atexit (clean_up_stdout);
+  c_stack_action (NULL);
+
+  last_recursive = 0;
+
+  pattern_table = hash_initialize (0, 0, hash_pattern, compare_patterns, 0);
+  if (!pattern_table)
+    xalloc_die ();
+
+  while (prev_optind = optind,
+         (opt = get_nondigit_option (argc, argv, &default_context)) != -1)
+    switch (opt)
+      {
+      case 'A':
+        context_length_arg (optarg, &out_after);
+        break;
+
+      case 'B':
+        context_length_arg (optarg, &out_before);
+        break;
+
+      case 'C':
+        /* Set output match context, but let any explicit leading or
+           trailing amount specified with -A or -B stand. */
+        context_length_arg (optarg, &default_context);
+        break;
+
+      case 'D':
+        if (STREQ (optarg, "read"))
+          devices = READ_DEVICES;
+        else if (STREQ (optarg, "skip"))
+          devices = SKIP_DEVICES;
+        else
+          die (EXIT_TROUBLE, 0, _("unknown devices method"));
+        break;
+
+      case 'E':
+        matcher = setmatcher ("egrep", matcher);
+        break;
+
+      case 'F':
+        matcher = setmatcher ("fgrep", matcher);
+        break;
+
+      case 'P':
+        matcher = setmatcher ("perl", matcher);
+        break;
+
+      case 'G':
+        matcher = setmatcher ("grep", matcher);
+        break;
+
+      case 'X': /* undocumented on purpose */
+        matcher = setmatcher (optarg, matcher);
+        break;
+
+      case 'H':
+        filename_option = 1;
+        break;
+
+      case 'I':
+        binary_files = WITHOUT_MATCH_BINARY_FILES;
+        break;
+
+      case 'T':
+        align_tabs = true;
+        break;
+
+      case 'U':
+        if (O_BINARY)
+          binary = true;
+        break;
+
+      case 'u':
+        /* Obsolete option; it had no effect; FIXME: remove in 2023  */
+        error (0, 0, _("warning: --unix-byte-offsets (-u) is obsolete"));
+        break;
+
+      case 'V':
+        show_version = true;
+        break;
+
+      case 'a':
+        binary_files = TEXT_BINARY_FILES;
+        break;
+
+      case 'b':
+        out_byte = true;
+        break;
+
+      case 'c':
+        count_matches = true;
+        break;
+
+      case 'd':
+        directories = XARGMATCH ("--directories", optarg,
+                                 directories_args, directories_types);
+        if (directories == RECURSE_DIRECTORIES)
+          last_recursive = prev_optind;
+        break;
+
+      case 'e':
+        {
+          ptrdiff_t cc = strlen (optarg);
+          if (keyalloc < keycc + cc + 1)
+            {
+              keyalloc = keycc + cc + 1;
+              pattern_array = keys = x2realloc (keys, &keyalloc);
+            }
+          char *keyend = mempcpy (keys + keycc, optarg, cc);
+          *keyend = '\n';
+          keycc = update_patterns (keys, keycc, keycc + cc + 1, "");
+        }
+        break;
+
+      case 'f':
+        {
+          if (STREQ (optarg, "-"))
+            {
+              if (binary)
+                xset_binary_mode (STDIN_FILENO, O_BINARY);
+              fp = stdin;
+            }
+          else
+            {
+              fp = fopen (optarg, binary ? "rb" : "r");
+              if (!fp)
+                die (EXIT_TROUBLE, errno, "%s", optarg);
+            }
+          ptrdiff_t newkeycc = keycc, cc;
+          for (;; newkeycc += cc)
+            {
+              if (keyalloc <= newkeycc + 1)
+                pattern_array = keys = x2realloc (keys, &keyalloc);
+              cc = fread (keys + newkeycc, 1, keyalloc - (newkeycc + 1), fp);
+              if (cc == 0)
+                break;
+            }
+          fread_errno = errno;
+          if (ferror (fp))
+            die (EXIT_TROUBLE, fread_errno, "%s", optarg);
+          if (fp != stdin)
+            fclose (fp);
+          /* Append final newline if file ended in non-newline. */
+          if (newkeycc != keycc && keys[newkeycc - 1] != '\n')
+            keys[newkeycc++] = '\n';
+          keycc = update_patterns (keys, keycc, newkeycc, optarg);
+        }
+        break;
+
+      case 'h':
+        filename_option = -1;
+        break;
+
+      case 'i':
+      case 'y':			/* For old-timers . . . */
+        match_icase = true;
+        break;
+
+      case NO_IGNORE_CASE_OPTION:
+        match_icase = false;
+        break;
+
+      case 'L':
+        /* Like -l, except list files that don't contain matches.
+           Inspired by the same option in Hume's gre. */
+        list_files = LISTFILES_NONMATCHING;
+        break;
+
+      case 'l':
+        list_files = LISTFILES_MATCHING;
+        break;
+
+      case 'm':
+        switch (xstrtoimax (optarg, 0, 10, &max_count, ""))
+          {
+          case LONGINT_OK:
+          case LONGINT_OVERFLOW:
+            break;
+
+          default:
+            die (EXIT_TROUBLE, 0, _("invalid max count"));
+          }
+        break;
+
+      case 'n':
+        out_line = true;
+        break;
+
+      case 'o':
+        only_matching = true;
+        break;
+
+      case 'q':
+        exit_on_match = true;
+        exit_failure = 0;
+        break;
+
+      case 'R':
+        fts_options = basic_fts_options | FTS_LOGICAL;
+        FALLTHROUGH;
+      case 'r':
+        directories = RECURSE_DIRECTORIES;
+        last_recursive = prev_optind;
+        break;
+
+      case 's':
+        suppress_errors = true;
+        break;
+
+      case 'v':
+        out_invert = true;
+        break;
+
+      case 'w':
+        wordinit ();
+        match_words = true;
+        break;
+
+      case 'x':
+        match_lines = true;
+        break;
+
+      case 'Z':
+        filename_mask = 0;
+        break;
+
+      case 'z':
+        eolbyte = '\0';
+        break;
+
+      case BINARY_FILES_OPTION:
+        if (STREQ (optarg, "binary"))
+          binary_files = BINARY_BINARY_FILES;
+        else if (STREQ (optarg, "text"))
+          binary_files = TEXT_BINARY_FILES;
+        else if (STREQ (optarg, "without-match"))
+          binary_files = WITHOUT_MATCH_BINARY_FILES;
+        else
+          die (EXIT_TROUBLE, 0, _("unknown binary-files type"));
+        break;
+
+      case COLOR_OPTION:
+        if (optarg)
+          {
+            if (!c_strcasecmp (optarg, "always")
+                || !c_strcasecmp (optarg, "yes")
+                || !c_strcasecmp (optarg, "force"))
+              color_option = 1;
+            else if (!c_strcasecmp (optarg, "never")
+                     || !c_strcasecmp (optarg, "no")
+                     || !c_strcasecmp (optarg, "none"))
+              color_option = 0;
+            else if (!c_strcasecmp (optarg, "auto")
+                     || !c_strcasecmp (optarg, "tty")
+                     || !c_strcasecmp (optarg, "if-tty"))
+              color_option = 2;
+            else
+              show_help = 1;
+          }
+        else
+          color_option = 2;
+        break;
+
+      case EXCLUDE_OPTION:
+      case INCLUDE_OPTION:
+        for (int cmd = 0; cmd < 2; cmd++)
+          {
+            if (!excluded_patterns[cmd])
+              excluded_patterns[cmd] = new_exclude ();
+            add_exclude (excluded_patterns[cmd], optarg,
+                         ((opt == INCLUDE_OPTION ? EXCLUDE_INCLUDE : 0)
+                          | exclude_options (cmd)));
+          }
+        break;
+      case EXCLUDE_FROM_OPTION:
+        for (int cmd = 0; cmd < 2; cmd++)
+          {
+            if (!excluded_patterns[cmd])
+              excluded_patterns[cmd] = new_exclude ();
+            if (add_exclude_file (add_exclude, excluded_patterns[cmd],
+                                  optarg, exclude_options (cmd), '\n')
+                != 0)
+              die (EXIT_TROUBLE, errno, "%s", optarg);
+          }
+        break;
+
+      case EXCLUDE_DIRECTORY_OPTION:
+        strip_trailing_slashes (optarg);
+        for (int cmd = 0; cmd < 2; cmd++)
+          {
+            if (!excluded_directory_patterns[cmd])
+              excluded_directory_patterns[cmd] = new_exclude ();
+            add_exclude (excluded_directory_patterns[cmd], optarg,
+                         exclude_options (cmd));
+          }
+        break;
+
+      case GROUP_SEPARATOR_OPTION:
+        group_separator = optarg;
+        break;
+
+      case LINE_BUFFERED_OPTION:
+        line_buffered = true;
+        break;
+
+      case LABEL_OPTION:
+        label = optarg;
+        break;
+
+#ifdef KMK_GREP
+      /* The --utf8 and --codepage <cp> options are mainly for windows where
+         UCRT doesn't check any of the standard locale selecting environment
+         variables and we have to give it directly to setlocale if we want
+         any control beyond the Windows defaults.
+
+         The UCRT setlocale has a nice feature of allowing us to set just
+         the codepage, omitting the rest of the locale spec. */
+      case UTF8_OPTION:
+        kmk_grep_set_codepage (".UTF-8");
+        break;
+      case CODEPAGE_OPTION:
+        kmk_grep_set_codepage (optarg);
+        break;
+#endif
+
+      case 0:
+        /* long options */
+        break;
+
+      default:
+        usage (EXIT_TROUBLE);
+        break;
+
+      }
+
+  if (show_version)
+    {
+      version_etc (stdout, getprogname (), PACKAGE_NAME, VERSION,
+                   (char *) NULL);
+      puts (_("Written by Mike Haertel and others; see\n"
+              "<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."));
+      return EXIT_SUCCESS;
+    }
+
+  if (show_help)
+    usage (EXIT_SUCCESS);
+
+  if (keys)
+    {
+      if (keycc == 0)
+        {
+          /* No keys were specified (e.g. -f /dev/null).  Match nothing.  */
+          out_invert ^= true;
+          match_lines = match_words = false;
+          keys[keycc++] = '\n';
+        }
+    }
+  else if (optind < argc)
+    {
+      /* Make a copy so that it can be reallocated or freed later.  */
+      pattern_array = keys = xstrdup (argv[optind++]);
+      ptrdiff_t patlen = strlen (keys);
+      keys[patlen] = '\n';
+      keycc = update_patterns (keys, 0, patlen + 1, "");
+    }
+  else
+    usage (EXIT_TROUBLE);
+
+  /* Strip trailing newline from keys.  */
+  keycc--;
+
+  hash_free (pattern_table);
+
+  bool possibly_tty = false;
+  struct stat tmp_stat;
+  if (! exit_on_match && fstat (STDOUT_FILENO, &tmp_stat) == 0)
+    {
+      if (S_ISREG (tmp_stat.st_mode))
+        out_stat = tmp_stat;
+      else if (S_ISCHR (tmp_stat.st_mode))
+        {
+          struct stat null_stat;
+          if (stat ("/dev/null", &null_stat) == 0
+              && SAME_INODE (tmp_stat, null_stat))
+            dev_null_output = true;
+          else
+            possibly_tty = true;
+        }
+    }
+
+  /* POSIX says -c, -l and -q are mutually exclusive.  In this
+     implementation, -q overrides -l and -L, which in turn override -c.  */
+  if (exit_on_match | dev_null_output)
+    list_files = LISTFILES_NONE;
+  if ((exit_on_match | dev_null_output) || list_files != LISTFILES_NONE)
+    {
+      count_matches = false;
+      done_on_match = true;
+    }
+  out_quiet = count_matches | done_on_match;
+
+  if (out_after < 0)
+    out_after = default_context;
+  if (out_before < 0)
+    out_before = default_context;
+
+  /* If it is easy to see that matching cannot succeed (e.g., 'grep -f
+     /dev/null'), fail without reading the input.  */
+  if ((max_count == 0
+       || (keycc == 0 && out_invert && !match_lines && !match_words))
+      && list_files != LISTFILES_NONMATCHING)
+    return EXIT_FAILURE;
+
+  if (color_option == 2)
+    color_option = possibly_tty && should_colorize () && isatty (STDOUT_FILENO);
+  init_colorize ();
+
+  if (color_option)
+    {
+      /* Legacy.  */
+      char *userval = getenv ("GREP_COLOR");
+      if (userval != NULL && *userval != '\0')
+        selected_match_color = context_match_color = userval;
+
+      /* New GREP_COLORS has priority.  */
+      parse_grep_colors ();
+    }
+
+  initialize_unibyte_mask ();
+
+  if (matcher < 0)
+    matcher = G_MATCHER_INDEX;
+
+  if (matcher == F_MATCHER_INDEX
+      || matcher == E_MATCHER_INDEX || matcher == G_MATCHER_INDEX)
+    {
+      if (match_icase)
+        setup_ok_fold ();
+
+      /* In a single-byte locale, switch from -F to -G if it is a single
+         pattern that matches words, where -G is typically faster.  In a
+         multibyte locale, switch if the patterns have an encoding error
+         (where -F does not work) or if -i and the patterns will not work
+         for -iF.  */
+      if (matcher == F_MATCHER_INDEX)
+        {
+          if (! localeinfo.multibyte
+              ? n_patterns == 1 && match_words
+              : (contains_encoding_error (keys, keycc)
+                 || (match_icase && !fgrep_icase_available (keys, keycc))))
+            {
+              fgrep_to_grep_pattern (&pattern_array, &keycc);
+              keys = pattern_array;
+              matcher = G_MATCHER_INDEX;
+            }
+        }
+      /* With two or more patterns, if -F works then switch from either -E
+         or -G, as -F is probably faster then.  */
+      else if (1 < n_patterns)
+        matcher = try_fgrep_pattern (matcher, keys, &keycc);
+    }
+
+  execute = matchers[matcher].execute;
+  compiled_pattern =
+    matchers[matcher].compile (keys, keycc, matchers[matcher].syntax,
+                               only_matching | color_option);
+  /* We need one byte prior and one after.  */
+  char eolbytes[3] = { 0, eolbyte, 0 };
+  size_t match_size;
+  skip_empty_lines = ((execute (compiled_pattern, eolbytes + 1, 1,
+                                &match_size, NULL) == 0)
+                      == out_invert);
+
+  int num_operands = argc - optind;
+  out_file = (filename_option == 0 && num_operands <= 1
+              ? - (directories == RECURSE_DIRECTORIES)
+              : 0 <= filename_option);
+
+  if (binary)
+    xset_binary_mode (STDOUT_FILENO, O_BINARY);
+
+  /* Prefer sysconf for page size, as getpagesize typically returns int.  */
+#ifdef _SC_PAGESIZE
+  long psize = sysconf (_SC_PAGESIZE);
+#else
+  long psize = getpagesize ();
+#endif
+  if (! (0 < psize && psize <= (SIZE_MAX - sizeof (uword)) / 2))
+    abort ();
+  pagesize = psize;
+  bufalloc = ALIGN_TO (INITIAL_BUFSIZE, pagesize) + pagesize + sizeof (uword);
+  buffer = xmalloc (bufalloc);
+
+  if (fts_options & FTS_LOGICAL && devices == READ_COMMAND_LINE_DEVICES)
+    devices = READ_DEVICES;
+
+  char *const *files;
+  if (0 < num_operands)
+    {
+      files = argv + optind;
+    }
+  else if (directories == RECURSE_DIRECTORIES && 0 < last_recursive)
+    {
+      static char *const cwd_only[] = { (char *) ".", NULL };
+      files = cwd_only;
+      omit_dot_slash = true;
+    }
+  else
+    {
+      static char *const stdin_only[] = { (char *) "-", NULL };
+      files = stdin_only;
+    }
+
+  bool status = true;
+  do
+    status &= grep_command_line_arg (*files++);
+  while (*files != NULL);
+
+  /* We register via atexit to test stdout.  */
+  return errseen ? EXIT_TROUBLE : status;
+}
diff --git a/src/grep/src/grep.h b/src/grep/src/grep.h
new file mode 100644
index 0000000..a3cd73e
--- /dev/null
+++ b/src/grep/src/grep.h
@@ -0,0 +1,34 @@
+/* grep.h - interface to grep driver for searching subroutines.
+   Copyright (C) 1992, 1998, 2001, 2007, 2009-2021 Free Software Foundation,
+   Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+#ifndef GREP_GREP_H
+#define GREP_GREP_H 1
+
+#include <stdbool.h>
+
+/* The following flags are exported from grep for the matchers
+   to look at. */
+extern bool match_icase;	/* -i */
+extern bool match_words;	/* -w */
+extern bool match_lines;	/* -x */
+extern char eolbyte;		/* -z */
+
+extern char const *pattern_file_name (size_t, size_t *);
+
+#endif
diff --git a/src/grep/src/kwsearch.c b/src/grep/src/kwsearch.c
new file mode 100644
index 0000000..ea18ce1
--- /dev/null
+++ b/src/grep/src/kwsearch.c
@@ -0,0 +1,240 @@
+/* kwsearch.c - searching subroutines using kwset for grep.
+   Copyright 1992, 1998, 2000, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+/* Written August 1992 by Mike Haertel. */
+
+#include <config.h>
+#include "search.h"
+
+/* A compiled -F pattern list.  */
+
+struct kwsearch
+{
+  /* The kwset for this pattern list.  */
+  kwset_t kwset;
+
+  /* The number of user-specified patterns.  This is less than
+     'kwswords (kwset)' when some extra one-character words have been
+     appended, one for each troublesome character that will require a
+     DFA search.  */
+  ptrdiff_t words;
+
+  /* The user's pattern and its size in bytes.  */
+  char *pattern;
+  size_t size;
+
+  /* The user's pattern compiled as a regular expression,
+     or null if it has not been compiled.  */
+  void *re;
+};
+
+/* Compile the -F style PATTERN, containing SIZE bytes that are
+   followed by '\n'.  Return a description of the compiled pattern.  */
+
+void *
+Fcompile (char *pattern, size_t size, reg_syntax_t ignored, bool exact)
+{
+  kwset_t kwset;
+  char *buf = NULL;
+  size_t bufalloc = 0;
+
+  kwset = kwsinit (true);
+
+  char const *p = pattern;
+  do
+    {
+      char const *sep = rawmemchr (p, '\n');
+      ptrdiff_t len = sep - p;
+
+      if (match_lines)
+        {
+          if (eolbyte == '\n' && pattern < p)
+            p--;
+          else
+            {
+              if (bufalloc < len + 2)
+                {
+                  free (buf);
+                  bufalloc = len + 2;
+                  buf = x2realloc (NULL, &bufalloc);
+                  buf[0] = eolbyte;
+                }
+              memcpy (buf + 1, p, len);
+              buf[len + 1] = eolbyte;
+              p = buf;
+            }
+          len += 2;
+        }
+      kwsincr (kwset, p, len);
+
+      p = sep + 1;
+    }
+  while (p <= pattern + size);
+
+  free (buf);
+
+  ptrdiff_t words = kwswords (kwset);
+  kwsprep (kwset);
+
+  struct kwsearch *kwsearch = xmalloc (sizeof *kwsearch);
+  kwsearch->kwset = kwset;
+  kwsearch->words = words;
+  kwsearch->pattern = pattern;
+  kwsearch->size = size;
+  kwsearch->re = NULL;
+  return kwsearch;
+}
+
+/* Use the compiled pattern VCP to search the buffer BUF of size SIZE.
+   If found, return the offset of the first match and store its
+   size into *MATCH_SIZE.  If not found, return SIZE_MAX.
+   If START_PTR is nonnull, start searching there.  */
+size_t
+Fexecute (void *vcp, char const *buf, size_t size, size_t *match_size,
+          char const *start_ptr)
+{
+  char const *beg, *end, *mb_start;
+  ptrdiff_t len;
+  char eol = eolbyte;
+  struct kwsearch *kwsearch = vcp;
+  kwset_t kwset = kwsearch->kwset;
+  bool mb_check = localeinfo.multibyte & !localeinfo.using_utf8 & !match_lines;
+  bool longest = (mb_check | !!start_ptr | match_words) & !match_lines;
+
+  for (mb_start = beg = start_ptr ? start_ptr : buf; beg <= buf + size; beg++)
+    {
+      struct kwsmatch kwsmatch;
+      ptrdiff_t offset = kwsexec (kwset, beg - match_lines,
+                                  buf + size - beg + match_lines, &kwsmatch,
+                                  longest);
+      if (offset < 0)
+        break;
+      len = kwsmatch.size - 2 * match_lines;
+
+      size_t mbclen = 0;
+      if (mb_check
+          && mb_goback (&mb_start, &mbclen, beg + offset, buf + size) != 0)
+        {
+          /* We have matched a single byte that is not at the beginning of a
+             multibyte character.  mb_goback has advanced MB_START past that
+             multibyte character.  Now, we want to position BEG so that the
+             next kwsexec search starts there.  Thus, to compensate for the
+             for-loop's BEG++, above, subtract one here.  This code is
+             unusually hard to reach, and exceptionally, let's show how to
+             trigger it here:
+
+               printf '\203AA\n'|LC_ALL=ja_JP.SHIFT_JIS src/grep -F A
+
+             That assumes the named locale is installed.
+             Note that your system's shift-JIS locale may have a different
+             name, possibly including "sjis".  */
+          beg = mb_start - 1;
+          continue;
+        }
+      beg += offset;
+      if (!!start_ptr & !match_words)
+        goto success_in_beg_and_len;
+      if (match_lines)
+        {
+          len += start_ptr == NULL;
+          goto success_in_beg_and_len;
+        }
+      if (! match_words)
+        goto success;
+
+      /* We need a preceding mb_start pointer.  Use the beginning of line
+         if there is a preceding newline.  */
+      if (mbclen == 0)
+        {
+          char const *nl = memrchr (mb_start, eol, beg - mb_start);
+          if (nl)
+            mb_start = nl + 1;
+        }
+
+      /* Succeed if neither the preceding nor the following character is a
+         word constituent.  If the preceding is not, yet the following
+         character IS a word constituent, keep trying with shorter matches.  */
+      if (mbclen > 0
+          ? ! wordchar_next (beg - mbclen, buf + size)
+          : ! wordchar_prev (mb_start, beg, buf + size))
+        for (;;)
+          {
+            if (! wordchar_next (beg + len, buf + size))
+              {
+                if (start_ptr)
+                  goto success_in_beg_and_len;
+                else
+                  goto success;
+              }
+            if (!start_ptr && !localeinfo.multibyte)
+              {
+                if (! kwsearch->re)
+                  {
+                    fgrep_to_grep_pattern (&kwsearch->pattern, &kwsearch->size);
+                    kwsearch->re = GEAcompile (kwsearch->pattern,
+                                               kwsearch->size,
+                                               RE_SYNTAX_GREP, !!start_ptr);
+                  }
+                if (beg + len < buf + size)
+                  {
+                    end = rawmemchr (beg + len, eol);
+                    end++;
+                  }
+                else
+                  end = buf + size;
+
+                if (EGexecute (kwsearch->re, beg, end - beg, match_size, NULL)
+                    != (size_t) -1)
+                  goto success_match_words;
+                beg = end - 1;
+                break;
+              }
+            if (!len)
+              break;
+
+            struct kwsmatch shorter_match;
+            if (kwsexec (kwset, beg, --len, &shorter_match, true) != 0)
+              break;
+            len = shorter_match.size;
+          }
+
+      /* No word match was found at BEG.  Skip past word constituents,
+         since they cannot precede the next match and not skipping
+         them could make things much slower.  */
+      beg += wordchars_size (beg, buf + size);
+      mb_start = beg;
+    }
+
+  return -1;
+
+ success:
+  if (beg + len < buf + size)
+    {
+      end = rawmemchr (beg + len, eol);
+      end++;
+    }
+  else
+    end = buf + size;
+ success_match_words:
+  beg = memrchr (buf, eol, beg - buf);
+  beg = beg ? beg + 1 : buf;
+  len = end - beg;
+ success_in_beg_and_len:;
+  *match_size = len;
+  return beg - buf;
+}
diff --git a/src/grep/src/kwset.c b/src/grep/src/kwset.c
new file mode 100644
index 0000000..792cc01
--- /dev/null
+++ b/src/grep/src/kwset.c
@@ -0,0 +1,929 @@
+/* kwset.c - search for any of a set of keywords.
+   Copyright (C) 1989, 1998, 2000, 2005, 2007, 2009-2021 Free Software
+   Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+/* Written August 1989 by Mike Haertel.  */
+
+/* For the Aho-Corasick algorithm, see:
+   Aho AV, Corasick MJ. Efficient string matching: an aid to
+   bibliographic search. CACM 18, 6 (1975), 333-40
+   <https://dx.doi.org/10.1145/360825.360855>, which describes the
+   failure function used below.
+
+   For the Boyer-Moore algorithm, see: Boyer RS, Moore JS.
+   A fast string searching algorithm. CACM 20, 10 (1977), 762-72
+   <https://dx.doi.org/10.1145/359842.359859>.
+
+   For a survey of more-recent string matching algorithms that might
+   help improve performance, see: Faro S, Lecroq T. The exact online
+   string matching problem: a review of the most recent results.
+   ACM Computing Surveys 45, 2 (2013), 13
+   <https://dx.doi.org/10.1145/2431211.2431212>.  */
+
+#include <config.h>
+
+#include "kwset.h"
+
+#include <stdint.h>
+#include <sys/types.h>
+#include "system.h"
+#include "intprops.h"
+#include "memchr2.h"
+#include "obstack.h"
+#include "xalloc.h"
+#include "verify.h"
+
+#define obstack_chunk_alloc xmalloc
+#define obstack_chunk_free free
+
+static unsigned char
+U (char ch)
+{
+  return to_uchar (ch);
+}
+
+/* Balanced tree of edges and labels leaving a given trie node.  */
+struct tree
+{
+  struct tree *llink;		/* Left link; MUST be first field.  */
+  struct tree *rlink;		/* Right link (to larger labels).  */
+  struct trie *trie;		/* Trie node pointed to by this edge.  */
+  unsigned char label;		/* Label on this edge.  */
+  char balance;			/* Difference in depths of subtrees.  */
+};
+
+/* Node of a trie representing a set of keywords.  */
+struct trie
+{
+  /* If an accepting node, this is either 2*W + 1 where W is the word
+     index, or is SIZE_MAX if Aho-Corasick is in use and FAIL
+     specifies where to look for more info.  If not an accepting node,
+     this is zero.  */
+  size_t accepting;
+
+  struct tree *links;		/* Tree of edges leaving this node.  */
+  struct trie *parent;		/* Parent of this node.  */
+  struct trie *next;		/* List of all trie nodes in level order.  */
+  struct trie *fail;		/* Aho-Corasick failure function.  */
+  ptrdiff_t depth;		/* Depth of this node from the root.  */
+  ptrdiff_t shift;		/* Shift function for search failures.  */
+  ptrdiff_t maxshift;		/* Max shift of self and descendants.  */
+};
+
+/* Structure returned opaquely to the caller, containing everything.  */
+struct kwset
+{
+  struct obstack obstack;	/* Obstack for node allocation.  */
+  ptrdiff_t words;		/* Number of words in the trie.  */
+  struct trie *trie;		/* The trie itself.  */
+  ptrdiff_t mind;		/* Minimum depth of an accepting node.  */
+  ptrdiff_t maxd;		/* Maximum depth of any node.  */
+  unsigned char delta[NCHAR];	/* Delta table for rapid search.  */
+  struct trie *next[NCHAR];	/* Table of children of the root.  */
+  char *target;			/* Target string if there's only one.  */
+  ptrdiff_t *shift;		/* Used in Boyer-Moore search for one
+                                   string.  */
+  char const *trans;		/* Character translation table.  */
+
+  /* This helps to match a terminal byte, which is the first byte
+     for Aho-Corasick, and the last byte for Boyer-More.  If all the
+     patterns have the same terminal byte (after translation via TRANS
+     if TRANS is nonnull), then this is that byte as an unsigned char.
+     Otherwise this is -1 if there is disagreement among the strings
+     about terminal bytes, and -2 if there are no terminal bytes and
+     no disagreement because all the patterns are empty.  */
+  int gc1;
+
+  /* This helps to match a terminal byte.  If 0 <= GC1HELP, B is
+     terminal when B == GC1 || B == GC1HELP (note that GC1 == GCHELP
+     is common here).  This is typically faster than evaluating
+     to_uchar (TRANS[B]) == GC1.  */
+  int gc1help;
+
+  /* If the string has two or more bytes, this is the penultimate byte,
+     after translation via TRANS if TRANS is nonnull.  This variable
+     is used only by Boyer-Moore.  */
+  char gc2;
+
+  /* kwsexec implementation.  */
+  ptrdiff_t (*kwsexec) (kwset_t, char const *, ptrdiff_t,
+                        struct kwsmatch *, bool);
+};
+
+/* Use TRANS to transliterate C.  A null TRANS does no transliteration.  */
+static inline char
+tr (char const *trans, char c)
+{
+  return trans ? trans[U(c)] : c;
+}
+
+static ptrdiff_t acexec (kwset_t, char const *, ptrdiff_t,
+                         struct kwsmatch *, bool);
+static ptrdiff_t bmexec (kwset_t, char const *, ptrdiff_t,
+                         struct kwsmatch *, bool);
+
+/* Return a newly allocated keyword set.  A nonnull TRANS specifies a
+   table of character translations to be applied to all pattern and
+   search text.  */
+kwset_t
+kwsalloc (char const *trans)
+{
+  struct kwset *kwset = xmalloc (sizeof *kwset);
+
+  obstack_init (&kwset->obstack);
+  kwset->words = 0;
+  kwset->trie = obstack_alloc (&kwset->obstack, sizeof *kwset->trie);
+  kwset->trie->accepting = 0;
+  kwset->trie->links = NULL;
+  kwset->trie->parent = NULL;
+  kwset->trie->next = NULL;
+  kwset->trie->fail = NULL;
+  kwset->trie->depth = 0;
+  kwset->trie->shift = 0;
+  kwset->mind = PTRDIFF_MAX;
+  kwset->maxd = -1;
+  kwset->target = NULL;
+  kwset->trans = trans;
+  kwset->kwsexec = acexec;
+
+  return kwset;
+}
+
+/* This upper bound is valid for CHAR_BIT >= 4 and
+   exact for CHAR_BIT in { 4..11, 13, 15, 17, 19 }.  */
+enum { DEPTH_SIZE = CHAR_BIT + CHAR_BIT / 2 };
+
+/* Add the given string to the contents of the keyword set.  */
+void
+kwsincr (kwset_t kwset, char const *text, ptrdiff_t len)
+{
+  assume (0 <= len);
+  struct trie *trie = kwset->trie;
+  char const *trans = kwset->trans;
+  bool reverse = kwset->kwsexec == bmexec;
+
+  if (reverse)
+    text += len;
+
+  /* Descend the trie (built of keywords) character-by-character,
+     installing new nodes when necessary.  */
+  while (len--)
+    {
+      unsigned char uc = reverse ? *--text : *text++;
+      unsigned char label = trans ? trans[uc] : uc;
+
+      /* Descend the tree of outgoing links for this trie node,
+         looking for the current character and keeping track
+         of the path followed.  */
+      struct tree *cur = trie->links;
+      struct tree *links[DEPTH_SIZE];
+      enum { L, R } dirs[DEPTH_SIZE];
+      links[0] = (struct tree *) &trie->links;
+      dirs[0] = L;
+      ptrdiff_t depth = 1;
+
+      while (cur && label != cur->label)
+        {
+          links[depth] = cur;
+          if (label < cur->label)
+            dirs[depth++] = L, cur = cur->llink;
+          else
+            dirs[depth++] = R, cur = cur->rlink;
+        }
+
+      /* The current character doesn't have an outgoing link at
+         this trie node, so build a new trie node and install
+         a link in the current trie node's tree.  */
+      if (!cur)
+        {
+          cur = obstack_alloc (&kwset->obstack, sizeof *cur);
+          cur->llink = NULL;
+          cur->rlink = NULL;
+          cur->trie = obstack_alloc (&kwset->obstack, sizeof *cur->trie);
+          cur->trie->accepting = 0;
+          cur->trie->links = NULL;
+          cur->trie->parent = trie;
+          cur->trie->next = NULL;
+          cur->trie->fail = NULL;
+          cur->trie->depth = trie->depth + 1;
+          cur->trie->shift = 0;
+          cur->label = label;
+          cur->balance = 0;
+
+          /* Install the new tree node in its parent.  */
+          if (dirs[--depth] == L)
+            links[depth]->llink = cur;
+          else
+            links[depth]->rlink = cur;
+
+          /* Back up the tree fixing the balance flags.  */
+          while (depth && !links[depth]->balance)
+            {
+              if (dirs[depth] == L)
+                --links[depth]->balance;
+              else
+                ++links[depth]->balance;
+              --depth;
+            }
+
+          /* Rebalance the tree by pointer rotations if necessary.  */
+          if (depth && ((dirs[depth] == L && --links[depth]->balance)
+                        || (dirs[depth] == R && ++links[depth]->balance)))
+            {
+              struct tree *t, *r, *l, *rl, *lr;
+
+              switch (links[depth]->balance)
+                {
+                case (char) -2:
+                  switch (dirs[depth + 1])
+                    {
+                    case L:
+                      r = links[depth], t = r->llink, rl = t->rlink;
+                      t->rlink = r, r->llink = rl;
+                      t->balance = r->balance = 0;
+                      break;
+                    case R:
+                      r = links[depth], l = r->llink, t = l->rlink;
+                      rl = t->rlink, lr = t->llink;
+                      t->llink = l, l->rlink = lr, t->rlink = r, r->llink = rl;
+                      l->balance = t->balance != 1 ? 0 : -1;
+                      r->balance = t->balance != (char) -1 ? 0 : 1;
+                      t->balance = 0;
+                      break;
+                    default:
+                      abort ();
+                    }
+                  break;
+                case 2:
+                  switch (dirs[depth + 1])
+                    {
+                    case R:
+                      l = links[depth], t = l->rlink, lr = t->llink;
+                      t->llink = l, l->rlink = lr;
+                      t->balance = l->balance = 0;
+                      break;
+                    case L:
+                      l = links[depth], r = l->rlink, t = r->llink;
+                      lr = t->llink, rl = t->rlink;
+                      t->llink = l, l->rlink = lr, t->rlink = r, r->llink = rl;
+                      l->balance = t->balance != 1 ? 0 : -1;
+                      r->balance = t->balance != (char) -1 ? 0 : 1;
+                      t->balance = 0;
+                      break;
+                    default:
+                      abort ();
+                    }
+                  break;
+                default:
+                  abort ();
+                }
+
+              if (dirs[depth - 1] == L)
+                links[depth - 1]->llink = t;
+              else
+                links[depth - 1]->rlink = t;
+            }
+        }
+
+      trie = cur->trie;
+    }
+
+  /* Mark the node finally reached as accepting, encoding the
+     index number of this word in the keyword set so far.  */
+  if (!trie->accepting)
+    {
+      size_t words = kwset->words;
+      trie->accepting = 2 * words + 1;
+    }
+  ++kwset->words;
+
+  /* Keep track of the longest and shortest string of the keyword set.  */
+  if (trie->depth < kwset->mind)
+    kwset->mind = trie->depth;
+  if (trie->depth > kwset->maxd)
+    kwset->maxd = trie->depth;
+}
+
+ptrdiff_t
+kwswords (kwset_t kwset)
+{
+  return kwset->words;
+}
+
+/* Enqueue the trie nodes referenced from the given tree in the
+   given queue.  */
+static void
+enqueue (struct tree *tree, struct trie **last)
+{
+  if (!tree)
+    return;
+  enqueue (tree->llink, last);
+  enqueue (tree->rlink, last);
+  (*last) = (*last)->next = tree->trie;
+}
+
+/* Compute the Aho-Corasick failure function for the trie nodes referenced
+   from the given tree, given the failure function for their parent as
+   well as a last resort failure node.  */
+static void
+treefails (struct tree const *tree, struct trie const *fail,
+           struct trie *recourse, bool reverse)
+{
+  struct tree *cur;
+
+  if (!tree)
+    return;
+
+  treefails (tree->llink, fail, recourse, reverse);
+  treefails (tree->rlink, fail, recourse, reverse);
+
+  /* Find, in the chain of fails going back to the root, the first
+     node that has a descendant on the current label.  */
+  while (fail)
+    {
+      cur = fail->links;
+      while (cur && tree->label != cur->label)
+        if (tree->label < cur->label)
+          cur = cur->llink;
+        else
+          cur = cur->rlink;
+      if (cur)
+        {
+          tree->trie->fail = cur->trie;
+          if (!reverse && cur->trie->accepting && !tree->trie->accepting)
+            tree->trie->accepting = SIZE_MAX;
+          return;
+        }
+      fail = fail->fail;
+    }
+
+  tree->trie->fail = recourse;
+}
+
+/* Set delta entries for the links of the given tree such that
+   the preexisting delta value is larger than the current depth.  */
+static void
+treedelta (struct tree const *tree, ptrdiff_t depth, unsigned char delta[])
+{
+  if (!tree)
+    return;
+  treedelta (tree->llink, depth, delta);
+  treedelta (tree->rlink, depth, delta);
+  if (depth < delta[tree->label])
+    delta[tree->label] = depth;
+}
+
+/* Return true if A has every label in B.  */
+static bool _GL_ATTRIBUTE_PURE
+hasevery (struct tree const *a, struct tree const *b)
+{
+  if (!b)
+    return true;
+  if (!hasevery (a, b->llink))
+    return false;
+  if (!hasevery (a, b->rlink))
+    return false;
+  while (a && b->label != a->label)
+    if (b->label < a->label)
+      a = a->llink;
+    else
+      a = a->rlink;
+  return !!a;
+}
+
+/* Compute a vector, indexed by character code, of the trie nodes
+   referenced from the given tree.  */
+static void
+treenext (struct tree const *tree, struct trie *next[])
+{
+  if (!tree)
+    return;
+  treenext (tree->llink, next);
+  treenext (tree->rlink, next);
+  next[tree->label] = tree->trie;
+}
+
+/* Prepare a built keyword set for use.  */
+void
+kwsprep (kwset_t kwset)
+{
+  char const *trans = kwset->trans;
+  ptrdiff_t i;
+  unsigned char deltabuf[NCHAR];
+  unsigned char *delta = trans ? deltabuf : kwset->delta;
+  struct trie *curr, *last;
+
+  /* Use Boyer-Moore if just one pattern, Aho-Corasick otherwise.  */
+  bool reverse = kwset->words == 1;
+
+  if (reverse)
+    {
+      kwset_t new_kwset;
+
+      /* Enqueue the immediate descendants in the level order queue.  */
+      for (curr = last = kwset->trie; curr; curr = curr->next)
+        enqueue (curr->links, &last);
+
+      /* Looking for just one string.  Extract it from the trie.  */
+      kwset->target = obstack_alloc (&kwset->obstack, kwset->mind);
+      for (i = 0, curr = kwset->trie; i < kwset->mind; ++i)
+        {
+          kwset->target[i] = curr->links->label;
+          curr = curr->next;
+        }
+
+      new_kwset = kwsalloc (kwset->trans);
+      new_kwset->kwsexec = bmexec;
+      kwsincr (new_kwset, kwset->target, kwset->mind);
+      obstack_free (&kwset->obstack, NULL);
+      *kwset = *new_kwset;
+      free (new_kwset);
+    }
+
+  /* Initial values for the delta table; will be changed later.  The
+     delta entry for a given character is the smallest depth of any
+     node at which an outgoing edge is labeled by that character.  */
+  memset (delta, MIN (kwset->mind, UCHAR_MAX), sizeof deltabuf);
+
+  /* Traverse the nodes of the trie in level order, simultaneously
+     computing the delta table, failure function, and shift function.  */
+  for (curr = last = kwset->trie; curr; curr = curr->next)
+    {
+      /* Enqueue the immediate descendants in the level order queue.  */
+      enqueue (curr->links, &last);
+
+      /* Update the delta table for the descendants of this node.  */
+      treedelta (curr->links, curr->depth, delta);
+
+      /* Compute the failure function for the descendants of this node.  */
+      treefails (curr->links, curr->fail, kwset->trie, reverse);
+
+      if (reverse)
+        {
+          curr->shift = kwset->mind;
+          curr->maxshift = kwset->mind;
+
+          /* Update the shifts at each node in the current node's chain
+             of fails back to the root.  */
+          struct trie *fail;
+          for (fail = curr->fail; fail; fail = fail->fail)
+            {
+              /* If the current node has some outgoing edge that the fail
+                 doesn't, then the shift at the fail should be no larger
+                 than the difference of their depths.  */
+              if (!hasevery (fail->links, curr->links))
+                if (curr->depth - fail->depth < fail->shift)
+                  fail->shift = curr->depth - fail->depth;
+
+              /* If the current node is accepting then the shift at the
+                 fail and its descendants should be no larger than the
+                 difference of their depths.  */
+              if (curr->accepting && fail->maxshift > curr->depth - fail->depth)
+                fail->maxshift = curr->depth - fail->depth;
+            }
+        }
+    }
+
+  if (reverse)
+    {
+      /* Traverse the trie in level order again, fixing up all nodes whose
+         shift exceeds their inherited maxshift.  */
+      for (curr = kwset->trie->next; curr; curr = curr->next)
+        {
+          if (curr->maxshift > curr->parent->maxshift)
+            curr->maxshift = curr->parent->maxshift;
+          if (curr->shift > curr->maxshift)
+            curr->shift = curr->maxshift;
+        }
+    }
+
+  /* Create a vector, indexed by character code, of the outgoing links
+     from the root node.  Accumulate GC1 and GC1HELP.  */
+  struct trie *nextbuf[NCHAR];
+  struct trie **next = trans ? nextbuf : kwset->next;
+  memset (next, 0, sizeof nextbuf);
+  treenext (kwset->trie->links, next);
+  int gc1 = -2;
+  int gc1help = -1;
+  for (i = 0; i < NCHAR; i++)
+    {
+      int ti = i;
+      if (trans)
+        {
+          ti = U(trans[i]);
+          kwset->next[i] = next[ti];
+        }
+      if (kwset->next[i])
+        {
+          if (gc1 < -1)
+            {
+              gc1 = ti;
+              gc1help = i;
+            }
+          else if (gc1 == ti)
+            gc1help = gc1help == ti ? i : -1;
+          else if (i == ti && gc1 == gc1help)
+            gc1help = i;
+          else
+            gc1 = -1;
+        }
+    }
+  kwset->gc1 = gc1;
+  kwset->gc1help = gc1help;
+
+  if (reverse)
+    {
+      /* Looking for just one string.  Extract it from the trie.  */
+      kwset->target = obstack_alloc (&kwset->obstack, kwset->mind);
+      for (i = kwset->mind - 1, curr = kwset->trie; i >= 0; --i)
+        {
+          kwset->target[i] = curr->links->label;
+          curr = curr->next;
+        }
+
+      if (kwset->mind > 1)
+        {
+          /* Looking for the delta2 shift that might be made after a
+             backwards match has failed.  Extract it from the trie.  */
+          kwset->shift
+            = obstack_alloc (&kwset->obstack,
+                             sizeof *kwset->shift * (kwset->mind - 1));
+          for (i = 0, curr = kwset->trie->next; i < kwset->mind - 1; ++i)
+            {
+              kwset->shift[i] = curr->shift;
+              curr = curr->next;
+            }
+
+          /* The penultimate byte.  */
+          kwset->gc2 = tr (trans, kwset->target[kwset->mind - 2]);
+        }
+    }
+
+  /* Fix things up for any translation table.  */
+  if (trans)
+    for (i = 0; i < NCHAR; ++i)
+      kwset->delta[i] = delta[U(trans[i])];
+}
+
+/* Delta2 portion of a Boyer-Moore search.  *TP is the string text
+   pointer; it is updated in place.  EP is the end of the string text,
+   and SP the end of the pattern.  LEN is the pattern length; it must
+   be at least 2.  TRANS, if nonnull, is the input translation table.
+   GC1 and GC2 are the last and second-from last bytes of the pattern,
+   transliterated by TRANS; the caller precomputes them for
+   efficiency.  If D1 is nonnull, it is a delta1 table for shifting *TP
+   when failing.  KWSET->shift says how much to shift.  */
+static inline bool
+bm_delta2_search (char const **tpp, char const *ep, char const *sp,
+                  ptrdiff_t len,
+                  char const *trans, char gc1, char gc2,
+                  unsigned char const *d1, kwset_t kwset)
+{
+  char const *tp = *tpp;
+  ptrdiff_t d = len, skip = 0;
+
+  while (true)
+    {
+      ptrdiff_t i = 2;
+      if (tr (trans, tp[-2]) == gc2)
+        {
+          while (++i <= d)
+            if (tr (trans, tp[-i]) != tr (trans, sp[-i]))
+              break;
+          if (i > d)
+            {
+              for (i = d + skip + 1; i <= len; ++i)
+                if (tr (trans, tp[-i]) != tr (trans, sp[-i]))
+                  break;
+              if (i > len)
+                {
+                  *tpp = tp - len;
+                  return true;
+                }
+            }
+        }
+
+      tp += d = kwset->shift[i - 2];
+      if (tp > ep)
+        break;
+      if (tr (trans, tp[-1]) != gc1)
+        {
+          if (d1)
+            tp += d1[U(tp[-1])];
+          break;
+        }
+      skip = i - 1;
+    }
+
+  *tpp = tp;
+  return false;
+}
+
+/* Return the address of the first byte in the buffer S (of size N)
+   that matches the terminal byte specified by KWSET, or NULL if there
+   is no match.  KWSET->gc1 should be nonnegative.  */
+static char const *
+memchr_kwset (char const *s, ptrdiff_t n, kwset_t kwset)
+{
+  char const *slim = s + n;
+  if (kwset->gc1help < 0)
+    {
+      for (; s < slim; s++)
+        if (kwset->next[U(*s)])
+          return s;
+    }
+  else
+    {
+      int small_heuristic = 2;
+      size_t small_bytes = small_heuristic * sizeof (unsigned long int);
+      while (s < slim)
+        {
+          if (kwset->next[U(*s)])
+            return s;
+          s++;
+          if ((uintptr_t) s % small_bytes == 0)
+            return memchr2 (s, kwset->gc1, kwset->gc1help, slim - s);
+        }
+    }
+  return NULL;
+}
+
+/* Fast Boyer-Moore search (inlinable version).  */
+static inline ptrdiff_t _GL_ATTRIBUTE_PURE
+bmexec_trans (kwset_t kwset, char const *text, ptrdiff_t size)
+{
+  assume (0 <= size);
+  unsigned char const *d1;
+  char const *ep, *sp, *tp;
+  int d;
+  ptrdiff_t len = kwset->mind;
+  char const *trans = kwset->trans;
+
+  if (len == 0)
+    return 0;
+  if (len > size)
+    return -1;
+  if (len == 1)
+    {
+      tp = memchr_kwset (text, size, kwset);
+      return tp ? tp - text : -1;
+    }
+
+  d1 = kwset->delta;
+  sp = kwset->target + len;
+  tp = text + len;
+  char gc1 = kwset->gc1;
+  char gc2 = kwset->gc2;
+
+  /* Significance of 12: 1 (initial offset) + 10 (skip loop) + 1 (md2).  */
+  ptrdiff_t len12;
+  if (!INT_MULTIPLY_WRAPV (len, 12, &len12) && len12 < size)
+    /* 11 is not a bug, the initial offset happens only once.  */
+    for (ep = text + size - 11 * len; tp <= ep; )
+      {
+        char const *tp0 = tp;
+        d = d1[U(tp[-1])], tp += d;
+        d = d1[U(tp[-1])], tp += d;
+        if (d != 0)
+          {
+            d = d1[U(tp[-1])], tp += d;
+            d = d1[U(tp[-1])], tp += d;
+            d = d1[U(tp[-1])], tp += d;
+            if (d != 0)
+              {
+                d = d1[U(tp[-1])], tp += d;
+                d = d1[U(tp[-1])], tp += d;
+                d = d1[U(tp[-1])], tp += d;
+                if (d != 0)
+                  {
+                    d = d1[U(tp[-1])], tp += d;
+                    d = d1[U(tp[-1])], tp += d;
+
+                    /* As a heuristic, prefer memchr to seeking by
+                       delta1 when the latter doesn't advance much.  */
+                    int advance_heuristic = 16 * sizeof (long);
+                    if (advance_heuristic <= tp - tp0)
+                      continue;
+                    tp--;
+                    tp = memchr_kwset (tp, text + size - tp, kwset);
+                    if (! tp)
+                      return -1;
+                    tp++;
+                    if (ep <= tp)
+                      break;
+                  }
+              }
+          }
+        if (bm_delta2_search (&tp, ep, sp, len, trans, gc1, gc2, d1, kwset))
+          return tp - text;
+      }
+
+  /* Now only a few characters are left to search.  Carefully avoid
+     ever producing an out-of-bounds pointer.  */
+  ep = text + size;
+  d = d1[U(tp[-1])];
+  while (d <= ep - tp)
+    {
+      d = d1[U((tp += d)[-1])];
+      if (d != 0)
+        continue;
+      if (bm_delta2_search (&tp, ep, sp, len, trans, gc1, gc2, NULL, kwset))
+        return tp - text;
+    }
+
+  return -1;
+}
+
+/* Fast Boyer-Moore search.  */
+static ptrdiff_t
+bmexec (kwset_t kwset, char const *text, ptrdiff_t size,
+        struct kwsmatch *kwsmatch, bool longest)
+{
+  /* Help the compiler inline in two ways, depending on whether
+     kwset->trans is null.  */
+  ptrdiff_t ret = (IGNORE_DUPLICATE_BRANCH_WARNING
+                   (kwset->trans
+                    ? bmexec_trans (kwset, text, size)
+                    : bmexec_trans (kwset, text, size)));
+  kwsmatch->index = 0;
+  kwsmatch->offset = ret;
+  kwsmatch->size = kwset->mind;
+  return ret;
+}
+
+/* Hairy multiple string search with the Aho-Corasick algorithm.
+   (inlinable version)  */
+static inline ptrdiff_t
+acexec_trans (kwset_t kwset, char const *text, ptrdiff_t len,
+              struct kwsmatch *kwsmatch, bool longest)
+{
+  struct trie const *trie, *accept;
+  char const *tp, *left, *lim;
+  struct tree const *tree;
+  char const *trans;
+
+  /* Initialize register copies and look for easy ways out.  */
+  if (len < kwset->mind)
+    return -1;
+  trans = kwset->trans;
+  trie = kwset->trie;
+  lim = text + len;
+  tp = text;
+
+  if (!trie->accepting)
+    {
+      unsigned char c;
+      int gc1 = kwset->gc1;
+
+      while (true)
+        {
+          if (gc1 < 0)
+            {
+              while (! (trie = kwset->next[c = tr (trans, *tp++)]))
+                if (tp >= lim)
+                  return -1;
+            }
+          else
+            {
+              tp = memchr_kwset (tp, lim - tp, kwset);
+              if (!tp)
+                return -1;
+              c = tr (trans, *tp++);
+              trie = kwset->next[c];
+            }
+
+          while (true)
+            {
+              if (trie->accepting)
+                goto match;
+              if (tp >= lim)
+                return -1;
+              c = tr (trans, *tp++);
+
+              for (tree = trie->links; c != tree->label; )
+                {
+                  tree = c < tree->label ? tree->llink : tree->rlink;
+                  if (! tree)
+                    {
+                      trie = trie->fail;
+                      if (!trie)
+                        {
+                          trie = kwset->next[c];
+                          if (trie)
+                            goto have_trie;
+                          if (tp >= lim)
+                            return -1;
+                          goto next_c;
+                        }
+                      if (trie->accepting)
+                        {
+                          --tp;
+                          goto match;
+                        }
+                      tree = trie->links;
+                    }
+                }
+              trie = tree->trie;
+            have_trie:;
+            }
+        next_c:;
+        }
+    }
+
+ match:
+  accept = trie;
+  while (accept->accepting == SIZE_MAX)
+    accept = accept->fail;
+  left = tp - accept->depth;
+
+  /* Try left-most longest match.  */
+  if (longest)
+    {
+      while (tp < lim)
+        {
+          struct trie const *accept1;
+          char const *left1;
+          unsigned char c = tr (trans, *tp++);
+
+          do
+            {
+              tree = trie->links;
+              while (tree && c != tree->label)
+                tree = c < tree->label ? tree->llink : tree->rlink;
+            }
+          while (!tree && (trie = trie->fail) && accept->depth <= trie->depth);
+
+          if (!tree)
+            break;
+          trie = tree->trie;
+          if (trie->accepting)
+            {
+              accept1 = trie;
+              while (accept1->accepting == SIZE_MAX)
+                accept1 = accept1->fail;
+              left1 = tp - accept1->depth;
+              if (left1 <= left)
+                {
+                  left = left1;
+                  accept = accept1;
+                }
+            }
+        }
+    }
+
+  kwsmatch->index = accept->accepting / 2;
+  kwsmatch->offset = left - text;
+  kwsmatch->size = accept->depth;
+
+  return left - text;
+}
+
+/* Hairy multiple string search with Aho-Corasick algorithm.  */
+static ptrdiff_t
+acexec (kwset_t kwset, char const *text, ptrdiff_t size,
+        struct kwsmatch *kwsmatch, bool longest)
+{
+  assume (0 <= size);
+  /* Help the compiler inline in two ways, depending on whether
+     kwset->trans is null.  */
+  return (IGNORE_DUPLICATE_BRANCH_WARNING
+          (kwset->trans
+           ? acexec_trans (kwset, text, size, kwsmatch, longest)
+           : acexec_trans (kwset, text, size, kwsmatch, longest)));
+}
+
+/* Find the first instance of a KWSET member in TEXT, which has SIZE bytes.
+   Return the offset (into TEXT) of the first byte of the matching substring,
+   or -1 if no match is found.  Upon a match, store details in
+   *KWSMATCH: index of matched keyword, start offset (same as the return
+   value), and length.  If LONGEST, find the longest match; otherwise
+   any match will do.  */
+ptrdiff_t
+kwsexec (kwset_t kwset, char const *text, ptrdiff_t size,
+         struct kwsmatch *kwsmatch, bool longest)
+{
+  return kwset->kwsexec (kwset, text, size, kwsmatch, longest);
+}
+
+/* Free the components of the given keyword set.  */
+void
+kwsfree (kwset_t kwset)
+{
+  obstack_free (&kwset->obstack, NULL);
+  free (kwset);
+}
diff --git a/src/grep/src/kwset.h b/src/grep/src/kwset.h
new file mode 100644
index 0000000..24e13e2
--- /dev/null
+++ b/src/grep/src/kwset.h
@@ -0,0 +1,44 @@
+/* kwset.h - header declaring the keyword set library.
+   Copyright (C) 1989, 1998, 2005, 2007, 2009-2021 Free Software Foundation,
+   Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+/* Written August 1989 by Mike Haertel.  */
+
+#include <stddef.h>
+#include <stdbool.h>
+
+struct kwsmatch
+{
+  ptrdiff_t index;	/* Index number of matching keyword.  */
+  ptrdiff_t offset;	/* Offset of match.  */
+  ptrdiff_t size;	/* Length of match.  */
+};
+
+#include "arg-nonnull.h"
+
+struct kwset;
+typedef struct kwset *kwset_t;
+
+extern kwset_t kwsalloc (char const *);
+extern void kwsincr (kwset_t, char const *, ptrdiff_t);
+extern ptrdiff_t kwswords (kwset_t) _GL_ATTRIBUTE_PURE;
+extern void kwsprep (kwset_t);
+extern ptrdiff_t kwsexec (kwset_t, char const *, ptrdiff_t,
+                          struct kwsmatch *, bool)
+  _GL_ARG_NONNULL ((4));
+extern void kwsfree (kwset_t);
diff --git a/src/grep/src/pcresearch.c b/src/grep/src/pcresearch.c
new file mode 100644
index 0000000..37f7e40
--- /dev/null
+++ b/src/grep/src/pcresearch.c
@@ -0,0 +1,352 @@
+/* pcresearch.c - searching subroutines using PCRE for grep.
+   Copyright 2000, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+/* Written August 1992 by Mike Haertel. */
+
+#include <config.h>
+#include "search.h"
+#include "die.h"
+
+#include <pcre.h>
+
+/* This must be at least 2; everything after that is for performance
+   in pcre_exec.  */
+enum { NSUB = 300 };
+
+#ifndef PCRE_EXTRA_MATCH_LIMIT_RECURSION
+# define PCRE_EXTRA_MATCH_LIMIT_RECURSION 0
+#endif
+#ifndef PCRE_STUDY_JIT_COMPILE
+# define PCRE_STUDY_JIT_COMPILE 0
+#endif
+#ifndef PCRE_STUDY_EXTRA_NEEDED
+# define PCRE_STUDY_EXTRA_NEEDED 0
+#endif
+
+struct pcre_comp
+{
+  /* Compiled internal form of a Perl regular expression.  */
+  pcre *cre;
+
+  /* Additional information about the pattern.  */
+  pcre_extra *extra;
+
+#if PCRE_STUDY_JIT_COMPILE
+  /* The JIT stack and its maximum size.  */
+  pcre_jit_stack *jit_stack;
+  int jit_stack_size;
+#endif
+
+  /* Table, indexed by ! (flag & PCRE_NOTBOL), of whether the empty
+     string matches when that flag is used.  */
+  int empty_match[2];
+};
+
+
+/* Match the already-compiled PCRE pattern against the data in SUBJECT,
+   of size SEARCH_BYTES and starting with offset SEARCH_OFFSET, with
+   options OPTIONS, and storing resulting matches into SUB.  Return
+   the (nonnegative) match location or a (negative) error number.  */
+static int
+jit_exec (struct pcre_comp *pc, char const *subject, int search_bytes,
+          int search_offset, int options, int *sub)
+{
+  while (true)
+    {
+      int e = pcre_exec (pc->cre, pc->extra, subject, search_bytes,
+                         search_offset, options, sub, NSUB);
+
+#if PCRE_STUDY_JIT_COMPILE
+      if (e == PCRE_ERROR_JIT_STACKLIMIT
+          && 0 < pc->jit_stack_size && pc->jit_stack_size <= INT_MAX / 2)
+        {
+          int old_size = pc->jit_stack_size;
+          int new_size = pc->jit_stack_size = old_size * 2;
+          if (pc->jit_stack)
+            pcre_jit_stack_free (pc->jit_stack);
+          pc->jit_stack = pcre_jit_stack_alloc (old_size, new_size);
+          if (!pc->jit_stack)
+            die (EXIT_TROUBLE, 0,
+                 _("failed to allocate memory for the PCRE JIT stack"));
+          pcre_assign_jit_stack (pc->extra, NULL, pc->jit_stack);
+          continue;
+        }
+#endif
+
+#if PCRE_EXTRA_MATCH_LIMIT_RECURSION
+      if (e == PCRE_ERROR_RECURSIONLIMIT
+          && (PCRE_STUDY_EXTRA_NEEDED || pc->extra))
+        {
+          unsigned long lim
+            = (pc->extra->flags & PCRE_EXTRA_MATCH_LIMIT_RECURSION
+               ? pc->extra->match_limit_recursion
+               : 0);
+          if (lim <= ULONG_MAX / 2)
+            {
+              pc->extra->match_limit_recursion = lim ? 2 * lim : (1 << 24) - 1;
+              pc->extra->flags |= PCRE_EXTRA_MATCH_LIMIT_RECURSION;
+              continue;
+            }
+        }
+#endif
+
+      return e;
+    }
+}
+
+/* Compile the -P style PATTERN, containing SIZE bytes that are
+   followed by '\n'.  Return a description of the compiled pattern.  */
+
+void *
+Pcompile (char *pattern, size_t size, reg_syntax_t ignored, bool exact)
+{
+  int e;
+  char const *ep;
+  static char const wprefix[] = "(?<!\\w)(?:";
+  static char const wsuffix[] = ")(?!\\w)";
+  static char const xprefix[] = "^(?:";
+  static char const xsuffix[] = ")$";
+  int fix_len_max = MAX (sizeof wprefix - 1 + sizeof wsuffix - 1,
+                         sizeof xprefix - 1 + sizeof xsuffix - 1);
+  char *re = xnmalloc (4, size + (fix_len_max + 4 - 1) / 4);
+  int flags = PCRE_DOLLAR_ENDONLY | (match_icase ? PCRE_CASELESS : 0);
+  char *patlim = pattern + size;
+  char *n = re;
+  char const *p;
+  char const *pnul;
+  struct pcre_comp *pc = xcalloc (1, sizeof (*pc));
+
+  if (localeinfo.multibyte)
+    {
+      if (! localeinfo.using_utf8)
+        die (EXIT_TROUBLE, 0, _("-P supports only unibyte and UTF-8 locales"));
+      flags |= PCRE_UTF8;
+    }
+
+  /* FIXME: Remove this restriction.  */
+  if (rawmemchr (pattern, '\n') != patlim)
+    die (EXIT_TROUBLE, 0, _("the -P option only supports a single pattern"));
+
+  *n = '\0';
+  if (match_words)
+    strcpy (n, wprefix);
+  if (match_lines)
+    strcpy (n, xprefix);
+  n += strlen (n);
+
+  /* The PCRE interface doesn't allow NUL bytes in the pattern, so
+     replace each NUL byte in the pattern with the four characters
+     "\000", removing a preceding backslash if there are an odd
+     number of backslashes before the NUL.  */
+  *patlim = '\0';
+  for (p = pattern; (pnul = p + strlen (p)) < patlim; p = pnul + 1)
+    {
+      memcpy (n, p, pnul - p);
+      n += pnul - p;
+      for (p = pnul; pattern < p && p[-1] == '\\'; p--)
+        continue;
+      n -= (pnul - p) & 1;
+      strcpy (n, "\\000");
+      n += 4;
+    }
+  memcpy (n, p, patlim - p + 1);
+  n += patlim - p;
+  *patlim = '\n';
+
+  if (match_words)
+    strcpy (n, wsuffix);
+  if (match_lines)
+    strcpy (n, xsuffix);
+
+  pc->cre = pcre_compile (re, flags, &ep, &e, pcre_maketables ());
+  if (!pc->cre)
+    die (EXIT_TROUBLE, 0, "%s", ep);
+
+  int pcre_study_flags = PCRE_STUDY_EXTRA_NEEDED | PCRE_STUDY_JIT_COMPILE;
+  pc->extra = pcre_study (pc->cre, pcre_study_flags, &ep);
+  if (ep)
+    die (EXIT_TROUBLE, 0, "%s", ep);
+
+#if PCRE_STUDY_JIT_COMPILE
+  if (pcre_fullinfo (pc->cre, pc->extra, PCRE_INFO_JIT, &e))
+    die (EXIT_TROUBLE, 0, _("internal error (should never happen)"));
+
+  /* The PCRE documentation says that a 32 KiB stack is the default.  */
+  if (e)
+    pc->jit_stack_size = 32 << 10;
+#endif
+
+  free (re);
+
+  int sub[NSUB];
+  pc->empty_match[false] = pcre_exec (pc->cre, pc->extra, "", 0, 0,
+                                      PCRE_NOTBOL, sub, NSUB);
+  pc->empty_match[true] = pcre_exec (pc->cre, pc->extra, "", 0, 0, 0, sub,
+                                     NSUB);
+
+  return pc;
+}
+
+size_t
+Pexecute (void *vcp, char const *buf, size_t size, size_t *match_size,
+          char const *start_ptr)
+{
+  int sub[NSUB];
+  char const *p = start_ptr ? start_ptr : buf;
+  bool bol = p[-1] == eolbyte;
+  char const *line_start = buf;
+  int e = PCRE_ERROR_NOMATCH;
+  char const *line_end;
+  struct pcre_comp *pc = vcp;
+
+  /* The search address to pass to pcre_exec.  This is the start of
+     the buffer, or just past the most-recently discovered encoding
+     error or line end.  */
+  char const *subject = buf;
+
+  do
+    {
+      /* Search line by line.  Although this code formerly used
+         PCRE_MULTILINE for performance, the performance wasn't always
+         better and the correctness issues were too puzzling.  See
+         Bug#22655.  */
+      line_end = rawmemchr (p, eolbyte);
+      if (INT_MAX < line_end - p)
+        die (EXIT_TROUBLE, 0, _("exceeded PCRE's line length limit"));
+
+      for (;;)
+        {
+          /* Skip past bytes that are easily determined to be encoding
+             errors, treating them as data that cannot match.  This is
+             faster than having pcre_exec check them.  */
+          while (localeinfo.sbclen[to_uchar (*p)] == -1)
+            {
+              p++;
+              subject = p;
+              bol = false;
+            }
+
+          int search_offset = p - subject;
+
+          /* Check for an empty match; this is faster than letting
+             pcre_exec do it.  */
+          if (p == line_end)
+            {
+              sub[0] = sub[1] = search_offset;
+              e = pc->empty_match[bol];
+              break;
+            }
+
+          int options = 0;
+          if (!bol)
+            options |= PCRE_NOTBOL;
+
+          e = jit_exec (pc, subject, line_end - subject, search_offset,
+                        options, sub);
+          if (e != PCRE_ERROR_BADUTF8)
+            break;
+          int valid_bytes = sub[0];
+
+          if (search_offset <= valid_bytes)
+            {
+              /* Try to match the string before the encoding error.  */
+              if (valid_bytes == 0)
+                {
+                  /* Handle the empty-match case specially, for speed.
+                     This optimization is valid if VALID_BYTES is zero,
+                     which means SEARCH_OFFSET is also zero.  */
+                  sub[1] = 0;
+                  e = pc->empty_match[bol];
+                }
+              else
+                e = jit_exec (pc, subject, valid_bytes, search_offset,
+                              options | PCRE_NO_UTF8_CHECK | PCRE_NOTEOL, sub);
+
+              if (e != PCRE_ERROR_NOMATCH)
+                break;
+
+              /* Treat the encoding error as data that cannot match.  */
+              p = subject + valid_bytes + 1;
+              bol = false;
+            }
+
+          subject += valid_bytes + 1;
+        }
+
+      if (e != PCRE_ERROR_NOMATCH)
+        break;
+      bol = true;
+      p = subject = line_start = line_end + 1;
+    }
+  while (p < buf + size);
+
+  if (e <= 0)
+    {
+      switch (e)
+        {
+        case PCRE_ERROR_NOMATCH:
+          break;
+
+        case PCRE_ERROR_NOMEMORY:
+          die (EXIT_TROUBLE, 0, _("%s: memory exhausted"), input_filename ());
+
+#if PCRE_STUDY_JIT_COMPILE
+        case PCRE_ERROR_JIT_STACKLIMIT:
+          die (EXIT_TROUBLE, 0, _("%s: exhausted PCRE JIT stack"),
+               input_filename ());
+#endif
+
+        case PCRE_ERROR_MATCHLIMIT:
+          die (EXIT_TROUBLE, 0, _("%s: exceeded PCRE's backtracking limit"),
+               input_filename ());
+
+        case PCRE_ERROR_RECURSIONLIMIT:
+          die (EXIT_TROUBLE, 0, _("%s: exceeded PCRE's recursion limit"),
+               input_filename ());
+
+        default:
+          /* For now, we lump all remaining PCRE failures into this basket.
+             If anyone cares to provide sample grep usage that can trigger
+             particular PCRE errors, we can add to the list (above) of more
+             detailed diagnostics.  */
+          die (EXIT_TROUBLE, 0, _("%s: internal PCRE error: %d"),
+               input_filename (), e);
+        }
+
+      return -1;
+    }
+  else
+    {
+      char const *matchbeg = subject + sub[0];
+      char const *matchend = subject + sub[1];
+      char const *beg;
+      char const *end;
+      if (start_ptr)
+        {
+          beg = matchbeg;
+          end = matchend;
+        }
+      else
+        {
+          beg = line_start;
+          end = line_end + 1;
+        }
+      *match_size = end - beg;
+      return beg - buf;
+    }
+}
diff --git a/src/grep/src/search.h b/src/grep/src/search.h
new file mode 100644
index 0000000..4853583
--- /dev/null
+++ b/src/grep/src/search.h
@@ -0,0 +1,89 @@
+/* search.c - searching subroutines using dfa, kwset and regex for grep.
+   Copyright 1992, 1998, 2000, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+#ifndef GREP_SEARCH_H
+#define GREP_SEARCH_H 1
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <wchar.h>
+#include <wctype.h>
+#include <regex.h>
+
+#include "system.h"
+#include "grep.h"
+#include "dfa.h"
+#include "kwset.h"
+#include "xalloc.h"
+#include "localeinfo.h"
+
+_GL_INLINE_HEADER_BEGIN
+#ifndef SEARCH_INLINE
+# define SEARCH_INLINE _GL_INLINE
+#endif
+
+/* This must be a signed type.  Each value is the difference in the size
+   of a character (in bytes) induced by converting to lower case.
+   The vast majority of values are 0, but a few are 1 or -1, so
+   technically, two bits may be sufficient.  */
+typedef signed char mb_len_map_t;
+
+/* searchutils.c */
+extern void wordinit (void);
+extern kwset_t kwsinit (bool);
+extern size_t wordchars_size (char const *, char const *) _GL_ATTRIBUTE_PURE;
+extern size_t wordchar_next (char const *, char const *) _GL_ATTRIBUTE_PURE;
+extern size_t wordchar_prev (char const *, char const *, char const *)
+  _GL_ATTRIBUTE_PURE;
+extern ptrdiff_t mb_goback (char const **, size_t *, char const *,
+                            char const *);
+
+/* dfasearch.c */
+extern void *GEAcompile (char *, size_t, reg_syntax_t, bool);
+extern size_t EGexecute (void *, char const *, size_t, size_t *, char const *);
+
+/* kwsearch.c */
+extern void *Fcompile (char *, size_t, reg_syntax_t, bool);
+extern size_t Fexecute (void *, char const *, size_t, size_t *, char const *);
+
+/* pcresearch.c */
+extern void *Pcompile (char *, size_t, reg_syntax_t, bool);
+extern size_t Pexecute (void *, char const *, size_t, size_t *, char const *);
+
+/* grep.c */
+extern struct localeinfo localeinfo;
+extern void fgrep_to_grep_pattern (char **, size_t *);
+
+/* Return the number of bytes in the character at the start of S, which
+   is of size N.  N must be positive.  MBS is the conversion state.
+   This acts like mbrlen, except it returns 1 when mbrlen would return 0,
+   and it is typically faster because of the cache.  */
+SEARCH_INLINE size_t
+mb_clen (char const *s, size_t n, mbstate_t *mbs)
+{
+  size_t len = localeinfo.sbclen[to_uchar (*s)];
+  return len == (size_t) -2 ? mbrlen (s, n, mbs) : len;
+}
+
+extern char const *input_filename (void);
+
+_GL_INLINE_HEADER_END
+
+#endif /* GREP_SEARCH_H */
diff --git a/src/grep/src/searchutils.c b/src/grep/src/searchutils.c
new file mode 100644
index 0000000..8058511
--- /dev/null
+++ b/src/grep/src/searchutils.c
@@ -0,0 +1,190 @@
+/* searchutils.c - helper subroutines for grep's matchers.
+   Copyright 1992, 1998, 2000, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+#include <config.h>
+
+#define SEARCH_INLINE _GL_EXTERN_INLINE
+#define SYSTEM_INLINE _GL_EXTERN_INLINE
+#include "search.h"
+
+/* For each byte B, sbwordchar[B] is true if B is a single-byte
+   character that is a word constituent, and is false otherwise.  */
+static bool sbwordchar[NCHAR];
+
+/* Whether -w considers WC to be a word constituent.  */
+static bool
+wordchar (wint_t wc)
+{
+  return wc == L'_' || iswalnum (wc);
+}
+
+void
+wordinit (void)
+{
+  for (int i = 0; i < NCHAR; i++)
+    sbwordchar[i] = wordchar (localeinfo.sbctowc[i]);
+}
+
+kwset_t
+kwsinit (bool mb_trans)
+{
+  char *trans = NULL;
+
+  if (match_icase && (MB_CUR_MAX == 1 || mb_trans))
+    {
+      trans = xmalloc (NCHAR);
+      /* If I is a single-byte character that becomes a different
+         single-byte character when uppercased, set trans[I]
+         to that character.  Otherwise, set trans[I] to I.  */
+      for (int i = 0; i < NCHAR; i++)
+        trans[i] = toupper (i);
+    }
+
+  return kwsalloc (trans);
+}
+
+/* In the buffer *MB_START, return the number of bytes needed to go
+   back from CUR to the previous boundary, where a "boundary" is the
+   start of a multibyte character or is an error-encoding byte.  The
+   buffer ends at END (i.e., one past the address of the buffer's last
+   byte).  If CUR is already at a boundary, return 0.  If CUR is no
+   larger than *MB_START, return CUR - *MB_START without modifying
+   *MB_START or *MBCLEN.
+
+   When returning zero, set *MB_START to CUR.  When returning a
+   positive value, set *MB_START to the next boundary after CUR,
+   or to END if there is no such boundary, and set *MBCLEN to the
+   length of the preceding character.  */
+ptrdiff_t
+mb_goback (char const **mb_start, size_t *mbclen, char const *cur,
+           char const *end)
+{
+  const char *p = *mb_start;
+  const char *p0 = p;
+  size_t clen;
+
+  if (cur <= p)
+    return cur - p;
+
+  if (localeinfo.using_utf8)
+    {
+      p = cur;
+      clen = 1;
+
+      if (cur < end && (*cur & 0xc0) == 0x80)
+        for (int i = 1; i <= 3; i++)
+          if ((cur[-i] & 0xc0) != 0x80)
+            {
+              mbstate_t mbs = { 0 };
+              clen = mb_clen (cur - i, end - (cur - i), &mbs);
+              if (i < clen && clen < (size_t) -2)
+                {
+                  p0 = cur - i;
+                  p = p0 + clen;
+                }
+              break;
+            }
+    }
+  else
+    {
+      mbstate_t mbs = { 0 };
+      do
+        {
+          clen = mb_clen (p, end - p, &mbs);
+
+          if ((size_t) -2 <= clen)
+            {
+              /* An invalid sequence, or a truncated multibyte character.
+                 Treat it as a single byte character.  */
+              clen = 1;
+              memset (&mbs, 0, sizeof mbs);
+            }
+          p0 = p;
+          p += clen;
+        }
+      while (p < cur);
+    }
+
+  *mb_start = p;
+  if (mbclen)
+    *mbclen = clen;
+  return p == cur ? 0 : cur - p0;
+}
+
+/* Examine the start of BUF (which goes to END) for word constituents.
+   If COUNTALL, examine as many as possible; otherwise, examine at most one.
+   Return the total number of bytes in the examined characters.  */
+static size_t
+wordchars_count (char const *buf, char const *end, bool countall)
+{
+  size_t n = 0;
+  mbstate_t mbs = { 0 };
+  while (n < end - buf)
+    {
+      unsigned char b = buf[n];
+      if (sbwordchar[b])
+        n++;
+      else if (localeinfo.sbclen[b] != -2)
+        break;
+      else
+        {
+          wchar_t wc = 0;
+          size_t wcbytes = mbrtowc (&wc, buf + n, end - buf - n, &mbs);
+          if (!wordchar (wc))
+            break;
+          n += wcbytes + !wcbytes;
+        }
+      if (!countall)
+        break;
+    }
+  return n;
+}
+
+/* Examine the start of BUF for the longest prefix containing just
+   word constituents.  Return the total number of bytes in the prefix.
+   The buffer ends at END.  */
+size_t
+wordchars_size (char const *buf, char const *end)
+{
+  return wordchars_count (buf, end, true);
+}
+
+/* If BUF starts with a word constituent, return the number of bytes
+   used to represent it; otherwise, return zero.  The buffer ends at END.  */
+size_t
+wordchar_next (char const *buf, char const *end)
+{
+  return wordchars_count (buf, end, false);
+}
+
+/* In the buffer BUF, return nonzero if the character whose encoding
+   contains the byte before CUR is a word constituent.  The buffer
+   ends at END.  */
+size_t
+wordchar_prev (char const *buf, char const *cur, char const *end)
+{
+  if (buf == cur)
+    return 0;
+  unsigned char b = *--cur;
+  if (! localeinfo.multibyte
+      || (localeinfo.using_utf8 && localeinfo.sbclen[b] == 1))
+    return sbwordchar[b];
+  char const *p = buf;
+  cur -= mb_goback (&p, NULL, cur, end);
+  return wordchar_next (cur, end);
+}
diff --git a/src/grep/src/system.h b/src/grep/src/system.h
new file mode 100644
index 0000000..2607f96
--- /dev/null
+++ b/src/grep/src/system.h
@@ -0,0 +1,132 @@
+/* Portability cruft.  Include after config.h and sys/types.h.
+   Copyright 1996, 1998-2000, 2007, 2009-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+#ifndef GREP_SYSTEM_H
+#define GREP_SYSTEM_H 1
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "configmake.h"
+#include "dirname.h"
+#include "ignore-value.h"
+#include "minmax.h"
+#include "same-inode.h"
+
+#include <stdlib.h>
+#include <stddef.h>
+#include <limits.h>
+#include <string.h>
+#include <ctype.h>
+
+enum { EXIT_TROUBLE = 2 };
+enum { NCHAR = UCHAR_MAX + 1 };
+
+#include <gettext.h>
+#define N_(String) gettext_noop(String)
+#define _(String) gettext(String)
+
+#include <locale.h>
+
+#ifndef initialize_main
+# define initialize_main(argcp, argvp)
+#endif
+
+#include "unlocked-io.h"
+
+_GL_INLINE_HEADER_BEGIN
+#ifndef SYSTEM_INLINE
+# define SYSTEM_INLINE _GL_INLINE
+#endif
+
+#define STREQ(a, b) (strcmp (a, b) == 0)
+
+/* Convert a possibly-signed character to an unsigned character.  This is
+   a bit safer than casting to unsigned char, since it catches some type
+   errors that the cast doesn't.  */
+SYSTEM_INLINE unsigned char
+to_uchar (char ch)
+{
+  return ch;
+}
+
+_GL_INLINE_HEADER_END
+
+#ifndef __has_feature
+# define __has_feature(F) false
+#endif
+
+#if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
+# define HAVE_ASAN 1
+#else
+# define HAVE_ASAN 0
+#endif
+
+#if HAVE_ASAN
+
+/* Mark memory region [addr, addr+size) as unaddressable.
+   This memory must be previously allocated by the user program.  Accessing
+   addresses in this region from instrumented code is forbidden until
+   this region is unpoisoned.  This function is not guaranteed to poison
+   the whole region - it may poison only a subregion of [addr, addr+size)
+   due to ASan alignment restrictions.
+   Method is NOT thread-safe in the sense that no two threads can
+   (un)poison memory in the same memory region simultaneously.  */
+void __asan_poison_memory_region (void const volatile *addr, size_t size);
+
+/* Mark memory region [addr, addr+size) as addressable.
+   This memory must be previously allocated by the user program.  Accessing
+   addresses in this region is allowed until this region is poisoned again.
+   This function may unpoison a superregion of [addr, addr+size) due to
+   ASan alignment restrictions.
+   Method is NOT thread-safe in the sense that no two threads can
+   (un)poison memory in the same memory region simultaneously.  */
+void __asan_unpoison_memory_region (void const volatile *addr, size_t size);
+
+#else
+
+static _GL_UNUSED void
+__asan_poison_memory_region (void const volatile *addr, size_t size) { }
+static _GL_UNUSED void
+__asan_unpoison_memory_region (void const volatile *addr, size_t size) { }
+#endif
+
+#ifndef FALLTHROUGH
+# if __GNUC__ < 7
+#  define FALLTHROUGH ((void) 0)
+# else
+#  define FALLTHROUGH __attribute__ ((__fallthrough__))
+# endif
+#endif
+
+/* When we deliberately use duplicate branches, use this macro to
+   disable gcc's -Wduplicated-branches in the containing expression.  */
+#if 7 <= __GNUC__
+# define IGNORE_DUPLICATE_BRANCH_WARNING(exp)				\
+  ({									\
+    _Pragma ("GCC diagnostic push")					\
+    _Pragma ("GCC diagnostic ignored \"-Wduplicated-branches\"")	\
+    exp;								\
+    _Pragma ("GCC diagnostic pop")					\
+  })
+#else
+# define IGNORE_DUPLICATE_BRANCH_WARNING(exp) exp
+#endif
+
+#endif
diff --git a/src/grep/tests/Coreutils.pm b/src/grep/tests/Coreutils.pm
new file mode 100644
index 0000000..3bb4d5d
--- /dev/null
+++ b/src/grep/tests/Coreutils.pm
@@ -0,0 +1,620 @@
+package Coreutils;
+# This is a testing framework.
+
+# Copyright (C) 1998-2015, 2017-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use strict;
+use vars qw($VERSION @ISA @EXPORT);
+
+use FileHandle;
+use File::Compare qw(compare);
+
+@ISA = qw(Exporter);
+($VERSION = '$Revision: 1.5 $ ') =~ tr/[0-9].//cd;
+@EXPORT = qw (run_tests triple_test getlimits);
+
+my $debug = $ENV{DEBUG};
+
+my @Types = qw (IN IN_PIPE OUT ERR AUX CMP EXIT PRE POST OUT_SUBST
+                ERR_SUBST ENV ENV_DEL);
+my %Types = map {$_ => 1} @Types;
+my %Zero_one_type = map {$_ => 1}
+   qw (OUT ERR EXIT PRE POST OUT_SUBST ERR_SUBST ENV);
+my $srcdir = "$ENV{srcdir}";
+my $Global_count = 1;
+
+# When running in a DJGPP environment, make $ENV{SHELL} point to bash.
+# Otherwise, a bad shell might be used (e.g. command.com) and many
+# tests would fail.
+defined $ENV{DJDIR}
+  and $ENV{SHELL} = "$ENV{DJDIR}/bin/bash.exe";
+
+# A file spec: a scalar or a reference to a single-keyed hash
+# ================
+# 'contents'               contents only (file name is derived from test name)
+# {filename => 'contents'} filename and contents
+# {filename => undef}      filename only -- $(srcdir)/tests/filename must exist
+#
+# FIXME: If there is more than one input file, then you can't specify 'REDIR'.
+# PIPE is still ok.
+#
+# I/O spec: a hash ref with the following properties
+# ================
+# - one key/value pair
+# - the key must be one of these strings: IN, OUT, ERR, AUX, CMP, EXIT
+# - the value must be a file spec
+# {OUT => 'data'}    put data in a temp file and compare it to stdout from cmd
+# {OUT => {'filename'=>undef}} compare contents of existing filename to
+#           stdout from cmd
+# {OUT => {'filename'=>[$CTOR, $DTOR]}} $CTOR and $DTOR are references to
+#           functions, each which is passed the single argument 'filename'.
+#           $CTOR must create 'filename'.
+#           DTOR may be omitted in which case 'sub{unlink @_[0]}' is used.
+#           FIXME: implement this
+# {ERR => ...}
+#           Same as for OUT, but compare with stderr, not stdout.
+# {OUT_SUBST => 's/variable_output/expected_output/'}
+#   Transform actual standard output before comparing it against expected.
+#   This is useful e.g. for programs like du that produce output that
+#   varies a lot from system.  E.g., an empty file may consume zero file
+#   blocks, or more, depending on the OS and on the file system type.
+# {ERR_SUBST => 's/variable_output/expected_output/'}
+#   Transform actual stderr output before comparing it against expected.
+#   This is useful when verifying that we get a meaningful diagnostic.
+#   For example, in rm/fail-2eperm, we have to account for three different
+#   diagnostics: Operation not permitted, Not owner, and Permission denied.
+# {EXIT => N} expect exit status of cmd to be N
+# {ENV => 'VAR=val ...'}
+#   Prepend 'VAR=val ...' to the command that we execute via 'system'.
+# {ENV_DEL => 'VAR'}
+#   Remove VAR from the environment just before running the corresponding
+#   command, and restore any value just afterwards.
+#
+# There may be many input file specs.  File names from the input specs
+# are concatenated in order on the command line.
+# There may be at most one of the OUT-, ERR-, and EXIT-keyed specs.
+# If the OUT-(or ERR)-keyed hash ref is omitted, then expect no output
+#   on stdout (or stderr).
+# If the EXIT-keyed one is omitted, then expect the exit status to be zero.
+
+# FIXME: Make sure that no junkfile is also listed as a
+# non-junkfile (i.e., with undef for contents)
+
+sub _shell_quote ($)
+{
+  my ($string) = @_;
+  $string =~ s/\'/\'\\\'\'/g;
+  return "'$string'";
+}
+
+sub _create_file ($$$$)
+{
+  my ($program_name, $test_name, $file_name, $data) = @_;
+  my $file;
+  if (defined $file_name)
+    {
+      $file = $file_name;
+    }
+  else
+    {
+      $file = "$test_name.$Global_count";
+      ++$Global_count;
+    }
+
+  warn "creating file '$file' with contents '$data'\n" if $debug;
+
+  # The test spec gave a string.
+  # Write it to a temp file and return tempfile name.
+  my $fh = new FileHandle "> $file";
+  die "$program_name: $file: $!\n" if ! $fh;
+  print $fh $data;
+  $fh->close || die "$program_name: $file: $!\n";
+
+  return $file;
+}
+
+sub _compare_files ($$$$$)
+{
+  my ($program_name, $test_name, $in_or_out, $actual, $expected) = @_;
+
+  my $differ = compare ($actual, $expected);
+  if ($differ)
+    {
+      my $info = (defined $in_or_out ? "std$in_or_out " : '');
+      warn "$program_name: test $test_name: ${info}mismatch, comparing "
+        . "$expected (expected) and $actual (actual)\n";
+      # Ignore any failure, discard stderr.
+      system "diff -c $expected $actual 2>/dev/null";
+    }
+
+  return $differ;
+}
+
+sub _process_file_spec ($$$$$)
+{
+  my ($program_name, $test_name, $file_spec, $type, $junk_files) = @_;
+
+  my ($file_name, $contents);
+  if (!ref $file_spec)
+    {
+      ($file_name, $contents) = (undef, $file_spec);
+    }
+  elsif (ref $file_spec eq 'HASH')
+    {
+      my $n = keys %$file_spec;
+      die "$program_name: $test_name: $type spec has $n elements --"
+        . " expected 1\n"
+          if $n != 1;
+      ($file_name, $contents) = each %$file_spec;
+
+      # This happens for the AUX hash in an io_spec like this:
+      # {CMP=> ['zy123utsrqponmlkji', {'@AUX@'=> undef}]},
+      defined $contents
+        or return $file_name;
+    }
+  else
+    {
+      die "$program_name: $test_name: invalid RHS in $type-spec\n"
+    }
+
+  my $is_junk_file = (! defined $file_name
+                      || (($type eq 'IN' || $type eq 'AUX' || $type eq 'CMP')
+                          && defined $contents));
+  my $file = _create_file ($program_name, $test_name,
+                           $file_name, $contents);
+
+  if ($is_junk_file)
+    {
+      push @$junk_files, $file
+    }
+  else
+    {
+      # FIXME: put $srcdir in here somewhere
+      warn "$program_name: $test_name: specified file '$file' does"
+        . " not exist\n"
+          if ! -f "$srcdir/tests/$file";
+    }
+
+  return $file;
+}
+
+sub _at_replace ($$)
+{
+  my ($map, $s) = @_;
+  foreach my $eo (qw (AUX OUT ERR))
+    {
+      my $f = $map->{$eo};
+      $f
+        and $s =~ /\@$eo\@/
+          and $s =~ s/\@$eo\@/$f/g;
+    }
+  return $s;
+}
+
+sub getlimits()
+{
+  my $NV;
+  open $NV, "getlimits |" or die "Error running getlimits\n";
+  my %limits = map {split /=|\n/} <$NV>;
+  return \%limits;
+}
+
+# FIXME: cleanup on interrupt
+# FIXME: extract 'do_1_test' function
+
+# FIXME: having to include $program_name here is an expedient kludge.
+# Library code doesn't 'die'.
+sub run_tests ($$$$$)
+{
+  my ($program_name, $prog, $t_spec, $save_temps, $verbose) = @_;
+
+  # To indicate that $prog is a shell built-in, you'd make it a string 'ref'.
+  # E.g., call run_tests ($prog, \$prog, \@Tests, $save_temps, $verbose);
+  # If it's a ref, invoke it via "env":
+  my @prog = ref $prog ? (qw(env --), $$prog) : $prog;
+
+  # Warn about empty t_spec.
+  # FIXME
+
+  # Remove all temp files upon interrupt.
+  # FIXME
+
+  # Verify that test names are distinct.
+  my $bad_test_name = 0;
+  my %seen;
+  my %seen_8dot3;
+  my $t;
+  foreach $t (@$t_spec)
+    {
+      my $test_name = $t->[0];
+      if ($seen{$test_name})
+        {
+          warn "$program_name: $test_name: duplicate test name\n";
+          $bad_test_name = 1;
+        }
+      $seen{$test_name} = 1;
+
+      if (0)
+        {
+          my $t8 = lc substr $test_name, 0, 8;
+          if ($seen_8dot3{$t8})
+            {
+              warn "$program_name: 8.3 test name conflict: "
+                . "$test_name, $seen_8dot3{$t8}\n";
+              $bad_test_name = 1;
+            }
+          $seen_8dot3{$t8} = $test_name;
+        }
+
+      # The test name may be no longer than 30 bytes.
+      # Yes, this is an arbitrary limit.  If it causes trouble,
+      # consider removing it.
+      my $max = 30;
+      if ($max < length $test_name)
+        {
+          warn "$program_name: $test_name: test name is too long (> $max)\n";
+          $bad_test_name = 1;
+        }
+    }
+  return 1 if $bad_test_name;
+
+  # FIXME check exit status
+  system (@prog, '--version') if $verbose;
+
+  my @junk_files;
+  my $fail = 0;
+  foreach my $tt (@$t_spec)
+    {
+      my @post_compare;
+      my @dummy = @$tt;
+      my $t = \@dummy;
+      my $test_name = shift @$t;
+      my $expect = {};
+      my ($pre, $post);
+
+      # FIXME: maybe don't reset this.
+      $Global_count = 1;
+      my @args;
+      my $io_spec;
+      my %seen_type;
+      my @env_delete;
+      my $env_prefix = '';
+      my $input_pipe_cmd;
+      foreach $io_spec (@$t)
+        {
+          if (!ref $io_spec)
+            {
+              push @args, $io_spec;
+              next;
+            }
+
+          if (ref $io_spec ne 'HASH')
+            {
+              eval 'use Data::Dumper';
+              die "$program_name: $test_name: invalid entry in test spec; "
+                . "expected HASH-ref,\nbut got this:\n"
+                  . Data::Dumper->Dump ([\$io_spec], ['$io_spec']) . "\n";
+            }
+
+          my $n = keys %$io_spec;
+          die "$program_name: $test_name: spec has $n elements --"
+            . " expected 1\n"
+              if $n != 1;
+          my ($type, $val) = each %$io_spec;
+          die "$program_name: $test_name: invalid key '$type' in test spec\n"
+            if ! $Types{$type};
+
+          # Make sure there's no more than one of OUT, ERR, EXIT, etc.
+          die "$program_name: $test_name: more than one $type spec\n"
+            if $Zero_one_type{$type} and $seen_type{$type}++;
+
+          if ($type eq 'PRE' or $type eq 'POST')
+            {
+              $expect->{$type} = $val;
+              next;
+            }
+
+          if ($type eq 'CMP')
+            {
+              my $t = ref $val;
+              $t && $t eq 'ARRAY'
+                or die "$program_name: $test_name: invalid CMP spec\n";
+              @$val == 2
+                or die "$program_name: $test_name: invalid CMP list;  must have"
+                  . " exactly 2 elements\n";
+              my @cmp_files;
+              foreach my $e (@$val)
+                {
+                  my $r = ref $e;
+                  $r && $r ne 'HASH'
+                    and die "$program_name: $test_name: invalid element ($r)"
+                      . " in CMP list;  only scalars and hash references "
+                        . "are allowed\n";
+                  if ($r && $r eq 'HASH')
+                    {
+                      my $n = keys %$e;
+                      $n == 1
+                        or die "$program_name: $test_name: CMP spec has $n "
+                          . "elements -- expected 1\n";
+
+                      # Replace any '@AUX@' in the key of %$e.
+                      my ($ff, $val) = each %$e;
+                      my $new_ff = _at_replace $expect, $ff;
+                      if ($new_ff ne $ff)
+                        {
+                          $e->{$new_ff} = $val;
+                          delete $e->{$ff};
+                        }
+                    }
+                  my $cmp_file = _process_file_spec ($program_name, $test_name,
+                                                     $e, $type, \@junk_files);
+                  push @cmp_files, $cmp_file;
+                }
+              push @post_compare, [@cmp_files];
+
+              $expect->{$type} = $val;
+              next;
+            }
+
+          if ($type eq 'EXIT')
+            {
+              die "$program_name: $test_name: invalid EXIT code\n"
+                if $val !~ /^\d+$/;
+              # FIXME: make sure $data is numeric
+              $expect->{EXIT} = $val;
+              next;
+            }
+
+          if ($type =~ /^(OUT|ERR)_SUBST$/)
+            {
+              $expect->{RESULT_SUBST} ||= {};
+              $expect->{RESULT_SUBST}->{$1} = $val;
+              next;
+            }
+
+          if ($type eq 'ENV')
+            {
+              $env_prefix = "$val ";
+              next;
+            }
+
+          if ($type eq 'ENV_DEL')
+            {
+              push @env_delete, $val;
+              next;
+            }
+
+          my $file = _process_file_spec ($program_name, $test_name, $val,
+                                         $type, \@junk_files);
+
+          if ($type eq 'IN' || $type eq 'IN_PIPE')
+            {
+              my $quoted_file = _shell_quote $file;
+              if ($type eq 'IN_PIPE')
+                {
+                  defined $input_pipe_cmd
+                    and die "$program_name: $test_name: only one input"
+                      . " may be specified with IN_PIPE\n";
+                  $input_pipe_cmd = "cat $quoted_file |";
+                }
+              else
+                {
+                  push @args, $quoted_file;
+                }
+            }
+          elsif ($type eq 'AUX' || $type eq 'OUT' || $type eq 'ERR')
+            {
+              $expect->{$type} = $file;
+            }
+          else
+            {
+              die "$program_name: $test_name: invalid type: $type\n"
+            }
+        }
+
+      # Expect an exit status of zero if it's not specified.
+      $expect->{EXIT} ||= 0;
+
+      # Allow ERR to be omitted -- in that case, expect no error output.
+      foreach my $eo (qw (OUT ERR))
+        {
+          if (!exists $expect->{$eo})
+            {
+              $expect->{$eo} = _create_file ($program_name, $test_name,
+                                             undef, '');
+              push @junk_files, $expect->{$eo};
+            }
+        }
+
+      # FIXME: Does it ever make sense to specify a filename *and* contents
+      # in OUT or ERR spec?
+
+      # FIXME: this is really suboptimal...
+      my @new_args;
+      foreach my $a (@args)
+        {
+          $a = _at_replace $expect, $a;
+          push @new_args, $a;
+        }
+      @args = @new_args;
+
+      warn "$test_name...\n" if $verbose;
+      &{$expect->{PRE}} if $expect->{PRE};
+      my %actual;
+      $actual{OUT} = "$test_name.O";
+      $actual{ERR} = "$test_name.E";
+      push @junk_files, $actual{OUT}, $actual{ERR};
+      my @cmd = (@prog, @args, "> $actual{OUT}", "2> $actual{ERR}");
+      $env_prefix
+        and unshift @cmd, $env_prefix;
+      defined $input_pipe_cmd
+        and unshift @cmd, $input_pipe_cmd;
+      my $cmd_str = join (' ', @cmd);
+
+      # Delete from the environment any symbols specified by syntax
+      # like this: {ENV_DEL => 'TZ'}.
+      my %pushed_env;
+      foreach my $env_sym (@env_delete)
+        {
+          my $val = delete $ENV{$env_sym};
+          defined $val
+            and $pushed_env{$env_sym} = $val;
+        }
+
+      warn "Running command: '$cmd_str'\n" if $debug;
+      my $rc = 0xffff & system $cmd_str;
+
+      # Restore any environment setting we changed via a deletion.
+      foreach my $env_sym (keys %pushed_env)
+        {
+          $ENV{$env_sym} = $pushed_env{$env_sym};
+        }
+
+      if ($rc == 0xff00)
+        {
+          warn "$program_name: test $test_name failed: command failed:\n"
+            . "  '$cmd_str': $!\n";
+          $fail = 1;
+          goto cleanup;
+        }
+      $rc >>= 8 if $rc > 0x80;
+      if ($expect->{EXIT} != $rc)
+        {
+          warn "$program_name: test $test_name failed: exit status mismatch:"
+            . "  expected $expect->{EXIT}, got $rc\n";
+          $fail = 1;
+          goto cleanup;
+        }
+
+      my %actual_data;
+      # Record actual stdout and stderr contents, if POST may need them.
+      if ($expect->{POST})
+        {
+          foreach my $eo (qw (OUT ERR))
+            {
+              my $out_file = $actual{$eo};
+              open IN, $out_file
+                or (warn
+                    "$program_name: cannot open $out_file for reading: $!\n"),
+                  $fail = 1, next;
+              $actual_data{$eo} = <IN>;
+              close IN
+                or (warn "$program_name: failed to read $out_file: $!\n"),
+                  $fail = 1;
+            }
+        }
+
+      foreach my $eo (qw (OUT ERR))
+        {
+          my $subst_expr = $expect->{RESULT_SUBST}->{$eo};
+          if (defined $subst_expr)
+            {
+              my $out = $actual{$eo};
+              my $orig = "$out.orig";
+
+              # Move $out aside (to $orig), then recreate $out
+              # by transforming each line of $orig via $subst_expr.
+              rename $out, $orig
+                or (warn "$program_name: cannot rename $out to $orig: $!\n"),
+                  $fail = 1, next;
+              open IN, $orig
+                or (warn "$program_name: cannot open $orig for reading: $!\n"),
+                  $fail = 1, (unlink $orig), next;
+              unlink $orig
+                or (warn "$program_name: cannot unlink $orig: $!\n"),
+                  $fail = 1;
+              open OUT, ">$out"
+                or (warn "$program_name: cannot open $out for writing: $!\n"),
+                  $fail = 1, next;
+              while (defined (my $line = <IN>))
+                {
+                  eval "\$_ = \$line; $subst_expr; \$line = \$_";
+                  print OUT $line;
+                }
+              close IN;
+              close OUT
+                or (warn "$program_name: failed to write $out: $!\n"),
+                  $fail = 1, next;
+            }
+
+          my $eo_lower = lc $eo;
+          _compare_files ($program_name, $test_name, $eo_lower,
+                          $actual{$eo}, $expect->{$eo})
+            and $fail = 1;
+        }
+
+      foreach my $pair (@post_compare)
+        {
+          my ($expected, $actual) = @$pair;
+          _compare_files $program_name, $test_name, undef, $actual, $expected
+            and $fail = 1;
+        }
+
+    cleanup:
+      $expect->{POST}
+        and &{$expect->{POST}} ($actual_data{OUT}, $actual_data{ERR});
+
+    }
+
+  # FIXME: maybe unlink files inside the big foreach loop?
+  unlink @junk_files if ! $save_temps;
+
+  return $fail;
+}
+
+# For each test in @$TESTS, generate two additional tests,
+# one using stdin, the other using a pipe.  I.e., given this one
+# ['idem-0', {IN=>''}, {OUT=>''}],
+# generate these:
+# ['idem-0.r', '<', {IN=>''}, {OUT=>''}],
+# ['idem-0.p', {IN_PIPE=>''}, {OUT=>''}],
+# Generate new tests only if there is exactly one input spec.
+# The returned list of tests contains each input test, followed
+# by zero or two derived tests.
+sub triple_test($)
+{
+  my ($tests) = @_;
+  my @new;
+  foreach my $t (@$tests)
+    {
+      push @new, $t;
+
+      my @in;
+      my @args;
+      my @list_of_hash;
+      foreach my $e (@$t)
+        {
+          !ref $e
+            and push (@args, $e), next;
+
+          ref $e && ref $e eq 'HASH'
+            or (warn "$0: $t->[0]: unexpected entry type\n"), next;
+          defined $e->{IN}
+            and (push @in, $e->{IN}), next;
+          push @list_of_hash, $e;
+        }
+      # Add variants IFF there is exactly one input file.
+      @in == 1
+        or next;
+      shift @args; # discard test name
+      push @new, ["$t->[0].r", @args, '<', {IN => $in[0]}, @list_of_hash];
+      push @new, ["$t->[0].p", @args, {IN_PIPE => $in[0]}, @list_of_hash];
+    }
+  return @new;
+}
+
+## package return
+1;
diff --git a/src/grep/tests/CuSkip.pm b/src/grep/tests/CuSkip.pm
new file mode 100644
index 0000000..f5fd9f1
--- /dev/null
+++ b/src/grep/tests/CuSkip.pm
@@ -0,0 +1,39 @@
+package CuSkip;
+# Skip a test: emit diag to log and to stderr, and exit 77
+
+# Copyright (C) 2011-2015, 2017-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+our $ME = $0 || "<???>";
+
+# Emit a diagnostic both to stderr and to $stderr_fileno_.
+# FIXME: don't hard-code that value (9), since it's already defined in init.cfg.
+sub skip ($)
+{
+  my ($msg) = @_;
+  my $stderr_fileno_ = 9;
+  warn $msg;
+  open FH, ">&$stderr_fileno_"
+    or warn "$ME: failed to dup stderr\n";
+  print FH $msg;
+  close FH
+    or warn "$ME: failed to close FD $stderr_fileno_\n";
+  exit 77;
+}
+
+1;
diff --git a/src/grep/tests/CuTmpdir.pm b/src/grep/tests/CuTmpdir.pm
new file mode 100644
index 0000000..93ecd9b
--- /dev/null
+++ b/src/grep/tests/CuTmpdir.pm
@@ -0,0 +1,111 @@
+package CuTmpdir;
+# create, then chdir into a temporary sub-directory
+
+# Copyright (C) 2007-2015, 2017-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+use File::Temp;
+use File::Find;
+
+our $ME = $0 || "<???>";
+
+my $dir;
+
+sub skip_test($)
+{
+  warn "$ME: skipping test: unsafe working directory name: '$_[0]'\n";
+  exit 77;
+}
+
+sub chmod_1
+{
+  my $name = $_;
+
+  # Skip symlinks and non-directories.
+  -l $name || !-d _
+    and return;
+
+  chmod 0700, $name;
+}
+
+sub chmod_tree
+{
+  # When tempdir fails, it croaks, which leaves $dir undefined.
+  defined $dir
+    or return;
+
+  # Perform the equivalent of find "$dir" -type d -print0|xargs -0 chmod -R 700.
+  my $options = {untaint => 1, wanted => \&chmod_1};
+  find ($options, $dir);
+}
+
+sub import {
+  my $prefix = $_[1];
+
+  $ME eq '-' && defined $prefix
+    and $ME = $prefix;
+
+  if ($prefix !~ /^\//)
+    {
+      eval 'use Cwd';
+      my $cwd = $@ ? '.' : Cwd::getcwd();
+      $prefix = "$cwd/$prefix";
+    }
+
+  # Untaint for the upcoming mkdir.
+  $prefix =~ m!^([-+\@\w./]+)$!
+    or skip_test $prefix;
+  $prefix = $1;
+
+  my $original_pid = $$;
+
+  my $on_sig_remove_tmpdir = sub {
+    my ($sig) = @_;
+    if ($$ == $original_pid and defined $dir)
+      {
+        chmod_tree;
+        # Older versions of File::Temp lack this method.
+        exists &File::Temp::cleanup
+          and &File::Temp::cleanup;
+      }
+    $SIG{$sig} = 'DEFAULT';
+    kill $sig, $$;
+  };
+
+  foreach my $sig (qw (INT TERM HUP))
+    {
+      $SIG{$sig} = $on_sig_remove_tmpdir;
+    }
+
+  $dir = File::Temp::tempdir("$prefix.tmp-XXXX", CLEANUP => 1 );
+  chdir $dir
+    or warn "$ME: failed to chdir to $dir: $!\n";
+}
+
+END {
+  # Move cwd out of the directory we're about to remove.
+  # This is required on some systems, and by some versions of File::Temp.
+  chdir '..'
+    or warn "$ME: failed to chdir to .. from $dir: $!\n";
+
+  my $saved_errno = $?;
+  chmod_tree;
+  $? = $saved_errno;
+}
+
+1;
diff --git a/src/grep/tests/Makefile.am b/src/grep/tests/Makefile.am
new file mode 100644
index 0000000..c84cdc0
--- /dev/null
+++ b/src/grep/tests/Makefile.am
@@ -0,0 +1,279 @@
+## Process this file with automake to create Makefile.in
+# Copyright 1997-1998, 2005-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+TEST_EXTENSIONS = .sh .pl
+
+if HAVE_PERL
+TESTSUITE_PERL = $(PERL)
+else
+TESTSUITE_PERL = $(SHELL) $(srcdir)/no-perl
+endif
+
+# Options passed to the perl invocations running the perl test scripts.
+TESTSUITE_PERL_OPTIONS = -w -I$(srcdir) -MCoreutils -MCuSkip
+# '$f' is set by the Automake-generated test harness to the path of the
+# current test script stripped of VPATH components, and is used by the
+# CuTmpdir module to determine the name of the temporary files to be
+# used.  Note that $f is a shell variable, not a make macro, so the use
+# of '$$f' below is correct, and not a typo.
+TESTSUITE_PERL_OPTIONS += -M"CuTmpdir qw($$f)"
+
+SH_LOG_COMPILER = $(SHELL)
+PL_LOG_COMPILER = $(TESTSUITE_PERL) $(TESTSUITE_PERL_OPTIONS)
+
+check_PROGRAMS = get-mb-cur-max
+AM_CPPFLAGS = -I$(top_builddir)/lib -I$(top_srcdir)/lib \
+  -I$(top_srcdir)/src
+AM_CFLAGS = $(WARN_CFLAGS) $(WERROR_CFLAGS)
+
+# Tell the linker to omit references to unused shared libraries.
+AM_LDFLAGS = $(IGNORE_UNUSED_LIBRARIES_CFLAGS)
+LDADD = ../lib/libgreputils.a $(LIBINTL) ../lib/libgreputils.a
+
+# The triple-backref test is expected to fail with both the system
+# matcher (i.e., with glibc) and with the included matcher.
+# Both matchers need to be fixed.
+# FIXME-2015: Remove this once the glibc and gnulib bugs are fixed.
+XFAIL_TESTS = triple-backref
+
+# Equivalence classes are only supported when using the system
+# matcher (which means only with glibc).
+# The included matcher needs to be fixed.
+# FIXME-2015: Remove this once the gnulib bug is fixed.
+if USE_INCLUDED_REGEX
+XFAIL_TESTS += equiv-classes
+else
+# The backref-alt test fails for glibc 2.27 and earlier.
+# If you're using older glibc you can upgrade to glibc 2.28 or later,
+# configure --with-included-regex, or ignore the test failure.
+endif
+
+TESTS =						\
+  backref					\
+  backref-alt					\
+  backref-multibyte-slow			\
+  backref-word					\
+  backslash-dot					\
+  backslash-s-and-repetition-operators		\
+  backslash-s-vs-invalid-multibyte		\
+  big-hole					\
+  big-match					\
+  binary-file-matches				\
+  bogus-wctob					\
+  bre						\
+  c-locale					\
+  case-fold-backref				\
+  case-fold-backslash-w				\
+  case-fold-char-class				\
+  case-fold-char-range				\
+  case-fold-char-type				\
+  case-fold-titlecase				\
+  char-class-multibyte				\
+  char-class-multibyte2				\
+  context-0					\
+  count-newline					\
+  dfa-coverage					\
+  dfa-heap-overrun				\
+  dfa-infloop					\
+  dfa-invalid-utf8				\
+  dfaexec-multibyte				\
+  empty						\
+  empty-line					\
+  empty-line-mb					\
+  encoding-error				\
+  epipe						\
+  equiv-classes					\
+  ere						\
+  euc-mb					\
+  false-match-mb-non-utf8			\
+  fedora					\
+  fgrep-infloop					\
+  fgrep-longest					\
+  file						\
+  filename-lineno.pl				\
+  fmbtest					\
+  foad1						\
+  grep-dev-null					\
+  grep-dev-null-out				\
+  grep-dir					\
+  hash-collision-perf				\
+  help-version					\
+  high-bit-range				\
+  in-eq-out-infloop				\
+  include-exclude				\
+  inconsistent-range				\
+  initial-tab					\
+  invalid-multibyte-infloop			\
+  khadafy					\
+  kwset-abuse					\
+  long-line-vs-2GiB-read			\
+  long-pattern-perf				\
+  many-regex-performance			\
+  match-lines					\
+  max-count-overread				\
+  max-count-vs-context				\
+  mb-dot-newline				\
+  mb-non-UTF8-overrun				\
+  mb-non-UTF8-perf-Fw				\
+  mb-non-UTF8-performance			\
+  mb-non-UTF8-word-boundary			\
+  multibyte-white-space				\
+  multiple-begin-or-end-line			\
+  null-byte					\
+  options					\
+  pcre						\
+  pcre-abort					\
+  pcre-context					\
+  pcre-count					\
+  pcre-infloop					\
+  pcre-invalid-utf8-infloop			\
+  pcre-invalid-utf8-input			\
+  pcre-jitstack					\
+  pcre-o					\
+  pcre-utf8					\
+  pcre-w					\
+  pcre-wx-backref				\
+  pcre-z					\
+  posix-bracket					\
+  prefix-of-multibyte				\
+  proc						\
+  r-dot						\
+  repetition-overflow				\
+  reversed-range-endpoints			\
+  sjis-mb					\
+  skip-device					\
+  skip-read					\
+  spencer1					\
+  spencer1-locale				\
+  stack-overflow				\
+  status					\
+  surrogate-pair				\
+  symlink					\
+  triple-backref				\
+  turkish-I					\
+  turkish-I-without-dot				\
+  turkish-eyes					\
+  two-chars					\
+  two-files					\
+  unibyte-binary				\
+  unibyte-bracket-expr				\
+  unibyte-negated-circumflex			\
+  utf8-bracket					\
+  warn-char-classes				\
+  word-delim-multibyte				\
+  word-multi-file				\
+  word-multibyte				\
+  write-error-msg				\
+  yesno						\
+  z-anchor-newline
+
+EXTRA_DIST =					\
+  $(TESTS)					\
+  bre.awk					\
+  bre.tests					\
+  Coreutils.pm					\
+  CuSkip.pm					\
+  CuTmpdir.pm					\
+  envvar-check					\
+  ere.awk					\
+  ere.tests					\
+  init.cfg					\
+  init.sh					\
+  khadafy.lines					\
+  khadafy.regexp				\
+  no-perl					\
+  spencer1.awk					\
+  spencer1.tests				\
+  spencer1-locale.awk
+
+# Default to a nonzero value.  Environment overrides.
+# https://udrepper.livejournal.com/11429.html
+MALLOC_PERTURB_ = 1
+
+TESTS_ENVIRONMENT =				\
+  tmp__=$${TMPDIR-/tmp};			\
+  test -d "$$tmp__" && test -w "$$tmp__" || tmp__=.;	\
+  . $(srcdir)/envvar-check;			\
+  TMPDIR=$$tmp__; export TMPDIR;		\
+						\
+  if test -n "$$BASH_VERSION" || (eval "export v=x") 2>/dev/null; then \
+    export_with_values () { export "$$@"; };		\
+  else							\
+    export_with_values ()				\
+    {							\
+      sed_extract_var='s/=.*//';			\
+      sed_quote_value="s/'/'\\\\''/g;s/=\\(.*\\)/='\\1'/";\
+      for arg in "$$@"; do				\
+        var=`echo "$$arg" | sed "$$sed_extract_var"`;	\
+        arg=`echo "$$arg" | sed "$$sed_quote_value"`;	\
+        eval "$$arg";					\
+        export "$$var";					\
+      done;						\
+    };							\
+  fi;							\
+							\
+  : 'Test egrep/fgrep help if they use our grep.';	\
+  grep=`echo grep | sed -e '$(transform)'` || exit;	\
+  if test "$$grep" = grep; then				\
+    built_programs='grep egrep fgrep';			\
+  else							\
+    built_programs='grep';				\
+  fi;							\
+						\
+  export_with_values				\
+  VERSION='$(VERSION)'				\
+  LOCALE_FR='$(LOCALE_FR)'			\
+  LOCALE_FR_UTF8='$(LOCALE_FR_UTF8)'		\
+  AWK=$(AWK)					\
+  LC_ALL=C					\
+  abs_top_builddir='$(abs_top_builddir)'	\
+  abs_top_srcdir='$(abs_top_srcdir)'		\
+  abs_srcdir='$(abs_srcdir)'			\
+  built_programs="$$built_programs"		\
+  host_triplet='$(host_triplet)'		\
+  srcdir='$(srcdir)'				\
+  top_srcdir='$(top_srcdir)'			\
+  CC='$(CC)'					\
+  GREP_TEST_NAME=`echo $$tst|sed 's,^\./,,;s,/,-,g'` \
+  MAKE=$(MAKE)					\
+  MALLOC_PERTURB_=$(MALLOC_PERTURB_)		\
+  PACKAGE_BUGREPORT='$(PACKAGE_BUGREPORT)'	\
+  PACKAGE_VERSION=$(PACKAGE_VERSION)		\
+  PERL='$(PERL)'				\
+  SHELL='$(SHELL)'				\
+  PATH='$(abs_top_builddir)/src$(PATH_SEPARATOR)'"$$PATH" \
+  ;						\
+						\
+  : 'set this envvar to indicate whether -P works';	\
+  m=0; if err=`echo .|grep -Pq . 2>&1`; then		\
+    test -z "$$err" && m=1; fi;				\
+  export PCRE_WORKS=$$m;				\
+  9>&2
+
+LOG_COMPILER = $(SHELL)
+
+VERBOSE = yes
+
+check: check_executable_TESTS
+.PHONY: check_executable_TESTS
+check_executable_TESTS: Makefile
+	$(AM_V_GEN)fail=0;						\
+        cd $(srcdir) && for i in $(TESTS); do				\
+	  test -x $$i || { fail=1; echo $$i >&2; };			\
+	done;								\
+	test $$fail = 1							\
+          && { echo the above test scripts are not executable >&2; exit 1; } \
+          || :
diff --git a/src/grep/tests/Makefile.in b/src/grep/tests/Makefile.in
new file mode 100644
index 0000000..bc124db
--- /dev/null
+++ b/src/grep/tests/Makefile.in
@@ -0,0 +1,3299 @@
+# Makefile.in generated by automake 1.16d from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Copyright 1997-1998, 2005-2021 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+    print $$0; \
+  close ($$0 ".trs"); \
+  close ($$0 ".log"); \
+}'
+# A command that, given a newline-separated list of test names on the
+# standard input, create the global log from their .trs and .log files.
+am__create_global_log = $(AWK) ' \
+function fatal(msg) \
+{ \
+  print "fatal: making $@: " msg | "cat >&2"; \
+  exit 1; \
+} \
+function rst_section(header) \
+{ \
+  print header; \
+  len = length(header); \
+  for (i = 1; i <= len; i = i + 1) \
+    printf "="; \
+  printf "\n\n"; \
+} \
+{ \
+  copy_in_global_log = 1; \
+  global_test_result = "RUN"; \
+  while ((rc = (getline line < ($$0 ".trs"))) != 0) \
+    { \
+      if (rc < 0) \
+         fatal("failed to read from " $$0 ".trs"); \
+      if (line ~ /$(am__global_test_result_rx)/) \
+        { \
+          sub("$(am__global_test_result_rx)", "", line); \
+          sub("[ 	]*$$", "", line); \
+          global_test_result = line; \
+        } \
+      else if (line ~ /$(am__copy_in_global_log_rx)[nN][oO]/) \
+        copy_in_global_log = 0; \
+    }; \
+  if (copy_in_global_log) \
+    { \
+      rst_section(global_test_result ": " $$0); \
+      while ((rc = (getline line < ($$0 ".log"))) != 0) \
+      { \
+        if (rc < 0) \
+          fatal("failed to read from " $$0 ".log"); \
+        print line; \
+      }; \
+      printf "\n"; \
+    }; \
+  close ($$0 ".trs"); \
+  close ($$0 ".log"); \
+}'
+# Restructured Text title.
+am__rst_title = { sed 's/.*/   &   /;h;s/./=/g;p;x;s/ *$$//;p;g' && echo; }
+# Solaris 10 'make', and several other traditional 'make' implementations,
+# pass "-e" to $(SHELL), and POSIX 2008 even requires this.  Work around it
+# by disabling -e (using the XSI extension "set +e") if it's set.
+am__sh_e_setup = case $$- in *e*) set +e;; esac
+# Default flags passed to test drivers.
+am__common_driver_flags = \
+  --color-tests "$$am__color_tests" \
+  --enable-hard-errors "$$am__enable_hard_errors" \
+  --expect-failure "$$am__expect_failure"
+# To be inserted before the command running the test.  Creates the
+# directory for the log if needed.  Stores in $dir the directory
+# containing $f, in $tst the test, in $log the log.  Executes the
+# developer- defined test setup AM_TESTS_ENVIRONMENT (if any), and
+# passes TESTS_ENVIRONMENT.  Set up options for the wrapper that
+# will run the test scripts (or their associated LOG_COMPILER, if
+# thy have one).
+am__check_pre = \
+$(am__sh_e_setup);					\
+$(am__vpath_adj_setup) $(am__vpath_adj)			\
+$(am__tty_colors);					\
+srcdir=$(srcdir); export srcdir;			\
+case "$@" in						\
+  */*) am__odir=`echo "./$@" | sed 's|/[^/]*$$||'`;;	\
+    *) am__odir=.;; 					\
+esac;							\
+test "x$$am__odir" = x"." || test -d "$$am__odir" 	\
+  || $(MKDIR_P) "$$am__odir" || exit $$?;		\
+if test -f "./$$f"; then dir=./;			\
+elif test -f "$$f"; then dir=;				\
+else dir="$(srcdir)/"; fi;				\
+tst=$$dir$$f; log='$@'; 				\
+if test -n '$(DISABLE_HARD_ERRORS)'; then		\
+  am__enable_hard_errors=no; 				\
+else							\
+  am__enable_hard_errors=yes; 				\
+fi; 							\
+case " $(XFAIL_TESTS) " in				\
+  *[\ \	]$$f[\ \	]* | *[\ \	]$$dir$$f[\ \	]*) \
+    am__expect_failure=yes;;				\
+  *)							\
+    am__expect_failure=no;;				\
+esac; 							\
+$(AM_TESTS_ENVIRONMENT) $(TESTS_ENVIRONMENT)
+# A shell command to get the names of the tests scripts with any registered
+# extension removed (i.e., equivalently, the names of the test logs, with
+# the '.log' extension removed).  The result is saved in the shell variable
+# '$bases'.  This honors runtime overriding of TESTS and TEST_LOGS.  Sadly,
+# we cannot use something simpler, involving e.g., "$(TEST_LOGS:.log=)",
+# since that might cause problem with VPATH rewrites for suffix-less tests.
+# See also 'test-harness-vpath-rewrite.sh' and 'test-trs-basic.sh'.
+am__set_TESTS_bases = \
+  bases='$(TEST_LOGS)'; \
+  bases=`for i in $$bases; do echo $$i; done | sed 's/\.log$$//'`; \
+  bases=`echo $$bases`
+AM_TESTSUITE_SUMMARY_HEADER = ' for $(PACKAGE_STRING)'
+RECHECK_LOGS = $(TEST_LOGS)
+AM_RECURSIVE_TARGETS = check recheck
+TEST_SUITE_LOG = test-suite.log
+LOG_DRIVER = $(SHELL) $(top_srcdir)/build-aux/test-driver
+LOG_COMPILE = $(LOG_COMPILER) $(AM_LOG_FLAGS) $(LOG_FLAGS)
+am__set_b = \
+  case '$@' in \
+    */*) \
+      case '$*' in \
+        */*) b='$*';; \
+          *) b=`echo '$@' | sed 's/\.log$$//'`; \
+       esac;; \
+    *) \
+      b='$*';; \
+  esac
+am__test_logs1 = $(TESTS:=.log)
+am__test_logs2 = $(am__test_logs1:@EXEEXT@.log=.log)
+am__test_logs3 = $(am__test_logs2:.sh.log=.log)
+SH_LOG_DRIVER = $(SHELL) $(top_srcdir)/build-aux/test-driver
+SH_LOG_COMPILE = $(SH_LOG_COMPILER) $(AM_SH_LOG_FLAGS) $(SH_LOG_FLAGS)
+TEST_LOGS = $(am__test_logs3:.pl.log=.log)
+PL_LOG_DRIVER = $(SHELL) $(top_srcdir)/build-aux/test-driver
+PL_LOG_COMPILE = $(PL_LOG_COMPILER) $(AM_PL_LOG_FLAGS) $(PL_LOG_FLAGS)
+am__DIST_COMMON = $(srcdir)/Makefile.in \
+	$(top_srcdir)/build-aux/depcomp \
+	$(top_srcdir)/build-aux/test-driver
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+pkglibexecdir = @pkglibexecdir@
+ACLOCAL = @ACLOCAL@
+ALLOCA = @ALLOCA@
+ALLOCA_H = @ALLOCA_H@
+AMTAR = @AMTAR@
+AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+APPLE_UNIVERSAL_BUILD = @APPLE_UNIVERSAL_BUILD@
+AR = @AR@
+ARFLAGS = @ARFLAGS@
+AUTOCONF = @AUTOCONF@
+AUTOHEADER = @AUTOHEADER@
+AUTOMAKE = @AUTOMAKE@
+AWK = @AWK@
+BITSIZEOF_PTRDIFF_T = @BITSIZEOF_PTRDIFF_T@
+BITSIZEOF_SIG_ATOMIC_T = @BITSIZEOF_SIG_ATOMIC_T@
+BITSIZEOF_SIZE_T = @BITSIZEOF_SIZE_T@
+BITSIZEOF_WCHAR_T = @BITSIZEOF_WCHAR_T@
+BITSIZEOF_WINT_T = @BITSIZEOF_WINT_T@
+CC = @CC@
+CCDEPMODE = @CCDEPMODE@
+CFLAGS = @CFLAGS@
+CFLAG_VISIBILITY = @CFLAG_VISIBILITY@
+COLORIZE_SOURCE = @COLORIZE_SOURCE@
+CONFIG_INCLUDE = @CONFIG_INCLUDE@
+CPP = @CPP@
+CPPFLAGS = @CPPFLAGS@
+CSCOPE = @CSCOPE@
+CTAGS = @CTAGS@
+CYGPATH_W = @CYGPATH_W@
+DEFS = @DEFS@
+DEPDIR = @DEPDIR@
+ECHO_C = @ECHO_C@
+ECHO_N = @ECHO_N@
+ECHO_T = @ECHO_T@
+EGREP = @EGREP@
+EMULTIHOP_HIDDEN = @EMULTIHOP_HIDDEN@
+EMULTIHOP_VALUE = @EMULTIHOP_VALUE@
+ENOLINK_HIDDEN = @ENOLINK_HIDDEN@
+ENOLINK_VALUE = @ENOLINK_VALUE@
+EOVERFLOW_HIDDEN = @EOVERFLOW_HIDDEN@
+EOVERFLOW_VALUE = @EOVERFLOW_VALUE@
+ERRNO_H = @ERRNO_H@
+ETAGS = @ETAGS@
+EXEEXT = @EXEEXT@
+FLOAT_H = @FLOAT_H@
+FNMATCH_H = @FNMATCH_H@
+GETOPT_CDEFS_H = @GETOPT_CDEFS_H@
+GETOPT_H = @GETOPT_H@
+GETTEXT_MACRO_VERSION = @GETTEXT_MACRO_VERSION@
+GL_CFLAG_ALLOW_WARNINGS = @GL_CFLAG_ALLOW_WARNINGS@
+GL_CXXFLAG_ALLOW_WARNINGS = @GL_CXXFLAG_ALLOW_WARNINGS@
+GL_GNULIB_ACCEPT = @GL_GNULIB_ACCEPT@
+GL_GNULIB_ACCEPT4 = @GL_GNULIB_ACCEPT4@
+GL_GNULIB_ACCESS = @GL_GNULIB_ACCESS@
+GL_GNULIB_ALIGNED_ALLOC = @GL_GNULIB_ALIGNED_ALLOC@
+GL_GNULIB_ALPHASORT = @GL_GNULIB_ALPHASORT@
+GL_GNULIB_ATOLL = @GL_GNULIB_ATOLL@
+GL_GNULIB_BIND = @GL_GNULIB_BIND@
+GL_GNULIB_BTOWC = @GL_GNULIB_BTOWC@
+GL_GNULIB_CALLOC_POSIX = @GL_GNULIB_CALLOC_POSIX@
+GL_GNULIB_CANONICALIZE_FILE_NAME = @GL_GNULIB_CANONICALIZE_FILE_NAME@
+GL_GNULIB_CHDIR = @GL_GNULIB_CHDIR@
+GL_GNULIB_CHOWN = @GL_GNULIB_CHOWN@
+GL_GNULIB_CLOSE = @GL_GNULIB_CLOSE@
+GL_GNULIB_CLOSEDIR = @GL_GNULIB_CLOSEDIR@
+GL_GNULIB_CONNECT = @GL_GNULIB_CONNECT@
+GL_GNULIB_COPY_FILE_RANGE = @GL_GNULIB_COPY_FILE_RANGE@
+GL_GNULIB_CREAT = @GL_GNULIB_CREAT@
+GL_GNULIB_CTIME = @GL_GNULIB_CTIME@
+GL_GNULIB_DIRFD = @GL_GNULIB_DIRFD@
+GL_GNULIB_DPRINTF = @GL_GNULIB_DPRINTF@
+GL_GNULIB_DUP = @GL_GNULIB_DUP@
+GL_GNULIB_DUP2 = @GL_GNULIB_DUP2@
+GL_GNULIB_DUP3 = @GL_GNULIB_DUP3@
+GL_GNULIB_DUPLOCALE = @GL_GNULIB_DUPLOCALE@
+GL_GNULIB_ENVIRON = @GL_GNULIB_ENVIRON@
+GL_GNULIB_EUIDACCESS = @GL_GNULIB_EUIDACCESS@
+GL_GNULIB_EXECL = @GL_GNULIB_EXECL@
+GL_GNULIB_EXECLE = @GL_GNULIB_EXECLE@
+GL_GNULIB_EXECLP = @GL_GNULIB_EXECLP@
+GL_GNULIB_EXECV = @GL_GNULIB_EXECV@
+GL_GNULIB_EXECVE = @GL_GNULIB_EXECVE@
+GL_GNULIB_EXECVP = @GL_GNULIB_EXECVP@
+GL_GNULIB_EXECVPE = @GL_GNULIB_EXECVPE@
+GL_GNULIB_EXPLICIT_BZERO = @GL_GNULIB_EXPLICIT_BZERO@
+GL_GNULIB_FACCESSAT = @GL_GNULIB_FACCESSAT@
+GL_GNULIB_FCHDIR = @GL_GNULIB_FCHDIR@
+GL_GNULIB_FCHMODAT = @GL_GNULIB_FCHMODAT@
+GL_GNULIB_FCHOWNAT = @GL_GNULIB_FCHOWNAT@
+GL_GNULIB_FCLOSE = @GL_GNULIB_FCLOSE@
+GL_GNULIB_FCNTL = @GL_GNULIB_FCNTL@
+GL_GNULIB_FDATASYNC = @GL_GNULIB_FDATASYNC@
+GL_GNULIB_FDOPEN = @GL_GNULIB_FDOPEN@
+GL_GNULIB_FDOPENDIR = @GL_GNULIB_FDOPENDIR@
+GL_GNULIB_FFLUSH = @GL_GNULIB_FFLUSH@
+GL_GNULIB_FFSL = @GL_GNULIB_FFSL@
+GL_GNULIB_FFSLL = @GL_GNULIB_FFSLL@
+GL_GNULIB_FGETC = @GL_GNULIB_FGETC@
+GL_GNULIB_FGETS = @GL_GNULIB_FGETS@
+GL_GNULIB_FNMATCH = @GL_GNULIB_FNMATCH@
+GL_GNULIB_FOPEN = @GL_GNULIB_FOPEN@
+GL_GNULIB_FPRINTF = @GL_GNULIB_FPRINTF@
+GL_GNULIB_FPRINTF_POSIX = @GL_GNULIB_FPRINTF_POSIX@
+GL_GNULIB_FPURGE = @GL_GNULIB_FPURGE@
+GL_GNULIB_FPUTC = @GL_GNULIB_FPUTC@
+GL_GNULIB_FPUTS = @GL_GNULIB_FPUTS@
+GL_GNULIB_FREAD = @GL_GNULIB_FREAD@
+GL_GNULIB_FREE_POSIX = @GL_GNULIB_FREE_POSIX@
+GL_GNULIB_FREOPEN = @GL_GNULIB_FREOPEN@
+GL_GNULIB_FSCANF = @GL_GNULIB_FSCANF@
+GL_GNULIB_FSEEK = @GL_GNULIB_FSEEK@
+GL_GNULIB_FSEEKO = @GL_GNULIB_FSEEKO@
+GL_GNULIB_FSTAT = @GL_GNULIB_FSTAT@
+GL_GNULIB_FSTATAT = @GL_GNULIB_FSTATAT@
+GL_GNULIB_FSYNC = @GL_GNULIB_FSYNC@
+GL_GNULIB_FTELL = @GL_GNULIB_FTELL@
+GL_GNULIB_FTELLO = @GL_GNULIB_FTELLO@
+GL_GNULIB_FTRUNCATE = @GL_GNULIB_FTRUNCATE@
+GL_GNULIB_FUTIMENS = @GL_GNULIB_FUTIMENS@
+GL_GNULIB_FWRITE = @GL_GNULIB_FWRITE@
+GL_GNULIB_GETC = @GL_GNULIB_GETC@
+GL_GNULIB_GETCHAR = @GL_GNULIB_GETCHAR@
+GL_GNULIB_GETCWD = @GL_GNULIB_GETCWD@
+GL_GNULIB_GETDELIM = @GL_GNULIB_GETDELIM@
+GL_GNULIB_GETDOMAINNAME = @GL_GNULIB_GETDOMAINNAME@
+GL_GNULIB_GETDTABLESIZE = @GL_GNULIB_GETDTABLESIZE@
+GL_GNULIB_GETENTROPY = @GL_GNULIB_GETENTROPY@
+GL_GNULIB_GETGROUPS = @GL_GNULIB_GETGROUPS@
+GL_GNULIB_GETHOSTNAME = @GL_GNULIB_GETHOSTNAME@
+GL_GNULIB_GETLINE = @GL_GNULIB_GETLINE@
+GL_GNULIB_GETLOADAVG = @GL_GNULIB_GETLOADAVG@
+GL_GNULIB_GETLOGIN = @GL_GNULIB_GETLOGIN@
+GL_GNULIB_GETLOGIN_R = @GL_GNULIB_GETLOGIN_R@
+GL_GNULIB_GETOPT_POSIX = @GL_GNULIB_GETOPT_POSIX@
+GL_GNULIB_GETPAGESIZE = @GL_GNULIB_GETPAGESIZE@
+GL_GNULIB_GETPASS = @GL_GNULIB_GETPASS@
+GL_GNULIB_GETPEERNAME = @GL_GNULIB_GETPEERNAME@
+GL_GNULIB_GETSOCKNAME = @GL_GNULIB_GETSOCKNAME@
+GL_GNULIB_GETSOCKOPT = @GL_GNULIB_GETSOCKOPT@
+GL_GNULIB_GETSUBOPT = @GL_GNULIB_GETSUBOPT@
+GL_GNULIB_GETTIMEOFDAY = @GL_GNULIB_GETTIMEOFDAY@
+GL_GNULIB_GETUMASK = @GL_GNULIB_GETUMASK@
+GL_GNULIB_GETUSERSHELL = @GL_GNULIB_GETUSERSHELL@
+GL_GNULIB_GRANTPT = @GL_GNULIB_GRANTPT@
+GL_GNULIB_GROUP_MEMBER = @GL_GNULIB_GROUP_MEMBER@
+GL_GNULIB_ICONV = @GL_GNULIB_ICONV@
+GL_GNULIB_IMAXABS = @GL_GNULIB_IMAXABS@
+GL_GNULIB_IMAXDIV = @GL_GNULIB_IMAXDIV@
+GL_GNULIB_INET_NTOP = @GL_GNULIB_INET_NTOP@
+GL_GNULIB_INET_PTON = @GL_GNULIB_INET_PTON@
+GL_GNULIB_IOCTL = @GL_GNULIB_IOCTL@
+GL_GNULIB_ISATTY = @GL_GNULIB_ISATTY@
+GL_GNULIB_ISBLANK = @GL_GNULIB_ISBLANK@
+GL_GNULIB_ISWBLANK = @GL_GNULIB_ISWBLANK@
+GL_GNULIB_ISWCTYPE = @GL_GNULIB_ISWCTYPE@
+GL_GNULIB_ISWDIGIT = @GL_GNULIB_ISWDIGIT@
+GL_GNULIB_ISWXDIGIT = @GL_GNULIB_ISWXDIGIT@
+GL_GNULIB_LCHMOD = @GL_GNULIB_LCHMOD@
+GL_GNULIB_LCHOWN = @GL_GNULIB_LCHOWN@
+GL_GNULIB_LINK = @GL_GNULIB_LINK@
+GL_GNULIB_LINKAT = @GL_GNULIB_LINKAT@
+GL_GNULIB_LISTEN = @GL_GNULIB_LISTEN@
+GL_GNULIB_LOCALECONV = @GL_GNULIB_LOCALECONV@
+GL_GNULIB_LOCALENAME = @GL_GNULIB_LOCALENAME@
+GL_GNULIB_LOCALTIME = @GL_GNULIB_LOCALTIME@
+GL_GNULIB_LSEEK = @GL_GNULIB_LSEEK@
+GL_GNULIB_LSTAT = @GL_GNULIB_LSTAT@
+GL_GNULIB_MALLOC_POSIX = @GL_GNULIB_MALLOC_POSIX@
+GL_GNULIB_MBRLEN = @GL_GNULIB_MBRLEN@
+GL_GNULIB_MBRTOWC = @GL_GNULIB_MBRTOWC@
+GL_GNULIB_MBSCASECMP = @GL_GNULIB_MBSCASECMP@
+GL_GNULIB_MBSCASESTR = @GL_GNULIB_MBSCASESTR@
+GL_GNULIB_MBSCHR = @GL_GNULIB_MBSCHR@
+GL_GNULIB_MBSCSPN = @GL_GNULIB_MBSCSPN@
+GL_GNULIB_MBSINIT = @GL_GNULIB_MBSINIT@
+GL_GNULIB_MBSLEN = @GL_GNULIB_MBSLEN@
+GL_GNULIB_MBSNCASECMP = @GL_GNULIB_MBSNCASECMP@
+GL_GNULIB_MBSNLEN = @GL_GNULIB_MBSNLEN@
+GL_GNULIB_MBSNRTOWCS = @GL_GNULIB_MBSNRTOWCS@
+GL_GNULIB_MBSPBRK = @GL_GNULIB_MBSPBRK@
+GL_GNULIB_MBSPCASECMP = @GL_GNULIB_MBSPCASECMP@
+GL_GNULIB_MBSRCHR = @GL_GNULIB_MBSRCHR@
+GL_GNULIB_MBSRTOWCS = @GL_GNULIB_MBSRTOWCS@
+GL_GNULIB_MBSSEP = @GL_GNULIB_MBSSEP@
+GL_GNULIB_MBSSPN = @GL_GNULIB_MBSSPN@
+GL_GNULIB_MBSSTR = @GL_GNULIB_MBSSTR@
+GL_GNULIB_MBSTOK_R = @GL_GNULIB_MBSTOK_R@
+GL_GNULIB_MBTOWC = @GL_GNULIB_MBTOWC@
+GL_GNULIB_MDA_ACCESS = @GL_GNULIB_MDA_ACCESS@
+GL_GNULIB_MDA_CHDIR = @GL_GNULIB_MDA_CHDIR@
+GL_GNULIB_MDA_CHMOD = @GL_GNULIB_MDA_CHMOD@
+GL_GNULIB_MDA_CLOSE = @GL_GNULIB_MDA_CLOSE@
+GL_GNULIB_MDA_CREAT = @GL_GNULIB_MDA_CREAT@
+GL_GNULIB_MDA_DUP = @GL_GNULIB_MDA_DUP@
+GL_GNULIB_MDA_DUP2 = @GL_GNULIB_MDA_DUP2@
+GL_GNULIB_MDA_ECVT = @GL_GNULIB_MDA_ECVT@
+GL_GNULIB_MDA_EXECL = @GL_GNULIB_MDA_EXECL@
+GL_GNULIB_MDA_EXECLE = @GL_GNULIB_MDA_EXECLE@
+GL_GNULIB_MDA_EXECLP = @GL_GNULIB_MDA_EXECLP@
+GL_GNULIB_MDA_EXECV = @GL_GNULIB_MDA_EXECV@
+GL_GNULIB_MDA_EXECVE = @GL_GNULIB_MDA_EXECVE@
+GL_GNULIB_MDA_EXECVP = @GL_GNULIB_MDA_EXECVP@
+GL_GNULIB_MDA_EXECVPE = @GL_GNULIB_MDA_EXECVPE@
+GL_GNULIB_MDA_FCLOSEALL = @GL_GNULIB_MDA_FCLOSEALL@
+GL_GNULIB_MDA_FCVT = @GL_GNULIB_MDA_FCVT@
+GL_GNULIB_MDA_FDOPEN = @GL_GNULIB_MDA_FDOPEN@
+GL_GNULIB_MDA_FILENO = @GL_GNULIB_MDA_FILENO@
+GL_GNULIB_MDA_GCVT = @GL_GNULIB_MDA_GCVT@
+GL_GNULIB_MDA_GETCWD = @GL_GNULIB_MDA_GETCWD@
+GL_GNULIB_MDA_GETPID = @GL_GNULIB_MDA_GETPID@
+GL_GNULIB_MDA_GETW = @GL_GNULIB_MDA_GETW@
+GL_GNULIB_MDA_ISATTY = @GL_GNULIB_MDA_ISATTY@
+GL_GNULIB_MDA_LSEEK = @GL_GNULIB_MDA_LSEEK@
+GL_GNULIB_MDA_MEMCCPY = @GL_GNULIB_MDA_MEMCCPY@
+GL_GNULIB_MDA_MKDIR = @GL_GNULIB_MDA_MKDIR@
+GL_GNULIB_MDA_MKTEMP = @GL_GNULIB_MDA_MKTEMP@
+GL_GNULIB_MDA_OPEN = @GL_GNULIB_MDA_OPEN@
+GL_GNULIB_MDA_PUTENV = @GL_GNULIB_MDA_PUTENV@
+GL_GNULIB_MDA_PUTW = @GL_GNULIB_MDA_PUTW@
+GL_GNULIB_MDA_READ = @GL_GNULIB_MDA_READ@
+GL_GNULIB_MDA_RMDIR = @GL_GNULIB_MDA_RMDIR@
+GL_GNULIB_MDA_STRDUP = @GL_GNULIB_MDA_STRDUP@
+GL_GNULIB_MDA_SWAB = @GL_GNULIB_MDA_SWAB@
+GL_GNULIB_MDA_TEMPNAM = @GL_GNULIB_MDA_TEMPNAM@
+GL_GNULIB_MDA_TZSET = @GL_GNULIB_MDA_TZSET@
+GL_GNULIB_MDA_UMASK = @GL_GNULIB_MDA_UMASK@
+GL_GNULIB_MDA_UNLINK = @GL_GNULIB_MDA_UNLINK@
+GL_GNULIB_MDA_WCSDUP = @GL_GNULIB_MDA_WCSDUP@
+GL_GNULIB_MDA_WRITE = @GL_GNULIB_MDA_WRITE@
+GL_GNULIB_MEMCHR = @GL_GNULIB_MEMCHR@
+GL_GNULIB_MEMMEM = @GL_GNULIB_MEMMEM@
+GL_GNULIB_MEMPCPY = @GL_GNULIB_MEMPCPY@
+GL_GNULIB_MEMRCHR = @GL_GNULIB_MEMRCHR@
+GL_GNULIB_MKDIR = @GL_GNULIB_MKDIR@
+GL_GNULIB_MKDIRAT = @GL_GNULIB_MKDIRAT@
+GL_GNULIB_MKDTEMP = @GL_GNULIB_MKDTEMP@
+GL_GNULIB_MKFIFO = @GL_GNULIB_MKFIFO@
+GL_GNULIB_MKFIFOAT = @GL_GNULIB_MKFIFOAT@
+GL_GNULIB_MKNOD = @GL_GNULIB_MKNOD@
+GL_GNULIB_MKNODAT = @GL_GNULIB_MKNODAT@
+GL_GNULIB_MKOSTEMP = @GL_GNULIB_MKOSTEMP@
+GL_GNULIB_MKOSTEMPS = @GL_GNULIB_MKOSTEMPS@
+GL_GNULIB_MKSTEMP = @GL_GNULIB_MKSTEMP@
+GL_GNULIB_MKSTEMPS = @GL_GNULIB_MKSTEMPS@
+GL_GNULIB_MKTIME = @GL_GNULIB_MKTIME@
+GL_GNULIB_NANOSLEEP = @GL_GNULIB_NANOSLEEP@
+GL_GNULIB_NL_LANGINFO = @GL_GNULIB_NL_LANGINFO@
+GL_GNULIB_NONBLOCKING = @GL_GNULIB_NONBLOCKING@
+GL_GNULIB_OBSTACK_PRINTF = @GL_GNULIB_OBSTACK_PRINTF@
+GL_GNULIB_OBSTACK_PRINTF_POSIX = @GL_GNULIB_OBSTACK_PRINTF_POSIX@
+GL_GNULIB_OPEN = @GL_GNULIB_OPEN@
+GL_GNULIB_OPENAT = @GL_GNULIB_OPENAT@
+GL_GNULIB_OPENDIR = @GL_GNULIB_OPENDIR@
+GL_GNULIB_OVERRIDES_STRUCT_STAT = @GL_GNULIB_OVERRIDES_STRUCT_STAT@
+GL_GNULIB_PCLOSE = @GL_GNULIB_PCLOSE@
+GL_GNULIB_PERROR = @GL_GNULIB_PERROR@
+GL_GNULIB_PIPE = @GL_GNULIB_PIPE@
+GL_GNULIB_PIPE2 = @GL_GNULIB_PIPE2@
+GL_GNULIB_POPEN = @GL_GNULIB_POPEN@
+GL_GNULIB_POSIX_MEMALIGN = @GL_GNULIB_POSIX_MEMALIGN@
+GL_GNULIB_POSIX_OPENPT = @GL_GNULIB_POSIX_OPENPT@
+GL_GNULIB_PREAD = @GL_GNULIB_PREAD@
+GL_GNULIB_PRINTF = @GL_GNULIB_PRINTF@
+GL_GNULIB_PRINTF_POSIX = @GL_GNULIB_PRINTF_POSIX@
+GL_GNULIB_PSELECT = @GL_GNULIB_PSELECT@
+GL_GNULIB_PTHREAD_COND = @GL_GNULIB_PTHREAD_COND@
+GL_GNULIB_PTHREAD_MUTEX = @GL_GNULIB_PTHREAD_MUTEX@
+GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK = @GL_GNULIB_PTHREAD_MUTEX_TIMEDLOCK@
+GL_GNULIB_PTHREAD_ONCE = @GL_GNULIB_PTHREAD_ONCE@
+GL_GNULIB_PTHREAD_RWLOCK = @GL_GNULIB_PTHREAD_RWLOCK@
+GL_GNULIB_PTHREAD_SIGMASK = @GL_GNULIB_PTHREAD_SIGMASK@
+GL_GNULIB_PTHREAD_SPIN = @GL_GNULIB_PTHREAD_SPIN@
+GL_GNULIB_PTHREAD_THREAD = @GL_GNULIB_PTHREAD_THREAD@
+GL_GNULIB_PTHREAD_TSS = @GL_GNULIB_PTHREAD_TSS@
+GL_GNULIB_PTSNAME = @GL_GNULIB_PTSNAME@
+GL_GNULIB_PTSNAME_R = @GL_GNULIB_PTSNAME_R@
+GL_GNULIB_PUTC = @GL_GNULIB_PUTC@
+GL_GNULIB_PUTCHAR = @GL_GNULIB_PUTCHAR@
+GL_GNULIB_PUTENV = @GL_GNULIB_PUTENV@
+GL_GNULIB_PUTS = @GL_GNULIB_PUTS@
+GL_GNULIB_PWRITE = @GL_GNULIB_PWRITE@
+GL_GNULIB_QSORT_R = @GL_GNULIB_QSORT_R@
+GL_GNULIB_RAISE = @GL_GNULIB_RAISE@
+GL_GNULIB_RANDOM = @GL_GNULIB_RANDOM@
+GL_GNULIB_RANDOM_R = @GL_GNULIB_RANDOM_R@
+GL_GNULIB_RAWMEMCHR = @GL_GNULIB_RAWMEMCHR@
+GL_GNULIB_READ = @GL_GNULIB_READ@
+GL_GNULIB_READDIR = @GL_GNULIB_READDIR@
+GL_GNULIB_READLINK = @GL_GNULIB_READLINK@
+GL_GNULIB_READLINKAT = @GL_GNULIB_READLINKAT@
+GL_GNULIB_REALLOCARRAY = @GL_GNULIB_REALLOCARRAY@
+GL_GNULIB_REALLOC_POSIX = @GL_GNULIB_REALLOC_POSIX@
+GL_GNULIB_REALPATH = @GL_GNULIB_REALPATH@
+GL_GNULIB_RECV = @GL_GNULIB_RECV@
+GL_GNULIB_RECVFROM = @GL_GNULIB_RECVFROM@
+GL_GNULIB_REMOVE = @GL_GNULIB_REMOVE@
+GL_GNULIB_RENAME = @GL_GNULIB_RENAME@
+GL_GNULIB_RENAMEAT = @GL_GNULIB_RENAMEAT@
+GL_GNULIB_REWINDDIR = @GL_GNULIB_REWINDDIR@
+GL_GNULIB_RMDIR = @GL_GNULIB_RMDIR@
+GL_GNULIB_RPMATCH = @GL_GNULIB_RPMATCH@
+GL_GNULIB_SCANDIR = @GL_GNULIB_SCANDIR@
+GL_GNULIB_SCANF = @GL_GNULIB_SCANF@
+GL_GNULIB_SCHED_YIELD = @GL_GNULIB_SCHED_YIELD@
+GL_GNULIB_SECURE_GETENV = @GL_GNULIB_SECURE_GETENV@
+GL_GNULIB_SELECT = @GL_GNULIB_SELECT@
+GL_GNULIB_SEND = @GL_GNULIB_SEND@
+GL_GNULIB_SENDTO = @GL_GNULIB_SENDTO@
+GL_GNULIB_SETENV = @GL_GNULIB_SETENV@
+GL_GNULIB_SETHOSTNAME = @GL_GNULIB_SETHOSTNAME@
+GL_GNULIB_SETLOCALE = @GL_GNULIB_SETLOCALE@
+GL_GNULIB_SETLOCALE_NULL = @GL_GNULIB_SETLOCALE_NULL@
+GL_GNULIB_SETSOCKOPT = @GL_GNULIB_SETSOCKOPT@
+GL_GNULIB_SHUTDOWN = @GL_GNULIB_SHUTDOWN@
+GL_GNULIB_SIGABBREV_NP = @GL_GNULIB_SIGABBREV_NP@
+GL_GNULIB_SIGACTION = @GL_GNULIB_SIGACTION@
+GL_GNULIB_SIGDESCR_NP = @GL_GNULIB_SIGDESCR_NP@
+GL_GNULIB_SIGNAL_H_SIGPIPE = @GL_GNULIB_SIGNAL_H_SIGPIPE@
+GL_GNULIB_SIGPROCMASK = @GL_GNULIB_SIGPROCMASK@
+GL_GNULIB_SLEEP = @GL_GNULIB_SLEEP@
+GL_GNULIB_SNPRINTF = @GL_GNULIB_SNPRINTF@
+GL_GNULIB_SOCKET = @GL_GNULIB_SOCKET@
+GL_GNULIB_SPRINTF_POSIX = @GL_GNULIB_SPRINTF_POSIX@
+GL_GNULIB_STAT = @GL_GNULIB_STAT@
+GL_GNULIB_STDIO_H_NONBLOCKING = @GL_GNULIB_STDIO_H_NONBLOCKING@
+GL_GNULIB_STDIO_H_SIGPIPE = @GL_GNULIB_STDIO_H_SIGPIPE@
+GL_GNULIB_STPCPY = @GL_GNULIB_STPCPY@
+GL_GNULIB_STPNCPY = @GL_GNULIB_STPNCPY@
+GL_GNULIB_STRCASESTR = @GL_GNULIB_STRCASESTR@
+GL_GNULIB_STRCHRNUL = @GL_GNULIB_STRCHRNUL@
+GL_GNULIB_STRDUP = @GL_GNULIB_STRDUP@
+GL_GNULIB_STRERROR = @GL_GNULIB_STRERROR@
+GL_GNULIB_STRERRORNAME_NP = @GL_GNULIB_STRERRORNAME_NP@
+GL_GNULIB_STRERROR_R = @GL_GNULIB_STRERROR_R@
+GL_GNULIB_STRFTIME = @GL_GNULIB_STRFTIME@
+GL_GNULIB_STRNCAT = @GL_GNULIB_STRNCAT@
+GL_GNULIB_STRNDUP = @GL_GNULIB_STRNDUP@
+GL_GNULIB_STRNLEN = @GL_GNULIB_STRNLEN@
+GL_GNULIB_STRPBRK = @GL_GNULIB_STRPBRK@
+GL_GNULIB_STRPTIME = @GL_GNULIB_STRPTIME@
+GL_GNULIB_STRSEP = @GL_GNULIB_STRSEP@
+GL_GNULIB_STRSIGNAL = @GL_GNULIB_STRSIGNAL@
+GL_GNULIB_STRSTR = @GL_GNULIB_STRSTR@
+GL_GNULIB_STRTOD = @GL_GNULIB_STRTOD@
+GL_GNULIB_STRTOIMAX = @GL_GNULIB_STRTOIMAX@
+GL_GNULIB_STRTOK_R = @GL_GNULIB_STRTOK_R@
+GL_GNULIB_STRTOL = @GL_GNULIB_STRTOL@
+GL_GNULIB_STRTOLD = @GL_GNULIB_STRTOLD@
+GL_GNULIB_STRTOLL = @GL_GNULIB_STRTOLL@
+GL_GNULIB_STRTOUL = @GL_GNULIB_STRTOUL@
+GL_GNULIB_STRTOULL = @GL_GNULIB_STRTOULL@
+GL_GNULIB_STRTOUMAX = @GL_GNULIB_STRTOUMAX@
+GL_GNULIB_STRVERSCMP = @GL_GNULIB_STRVERSCMP@
+GL_GNULIB_SYMLINK = @GL_GNULIB_SYMLINK@
+GL_GNULIB_SYMLINKAT = @GL_GNULIB_SYMLINKAT@
+GL_GNULIB_SYSTEM_POSIX = @GL_GNULIB_SYSTEM_POSIX@
+GL_GNULIB_TIMEGM = @GL_GNULIB_TIMEGM@
+GL_GNULIB_TIMESPEC_GET = @GL_GNULIB_TIMESPEC_GET@
+GL_GNULIB_TIME_R = @GL_GNULIB_TIME_R@
+GL_GNULIB_TIME_RZ = @GL_GNULIB_TIME_RZ@
+GL_GNULIB_TMPFILE = @GL_GNULIB_TMPFILE@
+GL_GNULIB_TOWCTRANS = @GL_GNULIB_TOWCTRANS@
+GL_GNULIB_TRUNCATE = @GL_GNULIB_TRUNCATE@
+GL_GNULIB_TTYNAME_R = @GL_GNULIB_TTYNAME_R@
+GL_GNULIB_TZSET = @GL_GNULIB_TZSET@
+GL_GNULIB_UNISTD_H_GETOPT = @GL_GNULIB_UNISTD_H_GETOPT@
+GL_GNULIB_UNISTD_H_NONBLOCKING = @GL_GNULIB_UNISTD_H_NONBLOCKING@
+GL_GNULIB_UNISTD_H_SIGPIPE = @GL_GNULIB_UNISTD_H_SIGPIPE@
+GL_GNULIB_UNLINK = @GL_GNULIB_UNLINK@
+GL_GNULIB_UNLINKAT = @GL_GNULIB_UNLINKAT@
+GL_GNULIB_UNLOCKPT = @GL_GNULIB_UNLOCKPT@
+GL_GNULIB_UNSETENV = @GL_GNULIB_UNSETENV@
+GL_GNULIB_USLEEP = @GL_GNULIB_USLEEP@
+GL_GNULIB_UTIMENSAT = @GL_GNULIB_UTIMENSAT@
+GL_GNULIB_VASPRINTF = @GL_GNULIB_VASPRINTF@
+GL_GNULIB_VDPRINTF = @GL_GNULIB_VDPRINTF@
+GL_GNULIB_VFPRINTF = @GL_GNULIB_VFPRINTF@
+GL_GNULIB_VFPRINTF_POSIX = @GL_GNULIB_VFPRINTF_POSIX@
+GL_GNULIB_VFSCANF = @GL_GNULIB_VFSCANF@
+GL_GNULIB_VPRINTF = @GL_GNULIB_VPRINTF@
+GL_GNULIB_VPRINTF_POSIX = @GL_GNULIB_VPRINTF_POSIX@
+GL_GNULIB_VSCANF = @GL_GNULIB_VSCANF@
+GL_GNULIB_VSNPRINTF = @GL_GNULIB_VSNPRINTF@
+GL_GNULIB_VSPRINTF_POSIX = @GL_GNULIB_VSPRINTF_POSIX@
+GL_GNULIB_WCPCPY = @GL_GNULIB_WCPCPY@
+GL_GNULIB_WCPNCPY = @GL_GNULIB_WCPNCPY@
+GL_GNULIB_WCRTOMB = @GL_GNULIB_WCRTOMB@
+GL_GNULIB_WCSCASECMP = @GL_GNULIB_WCSCASECMP@
+GL_GNULIB_WCSCAT = @GL_GNULIB_WCSCAT@
+GL_GNULIB_WCSCHR = @GL_GNULIB_WCSCHR@
+GL_GNULIB_WCSCMP = @GL_GNULIB_WCSCMP@
+GL_GNULIB_WCSCOLL = @GL_GNULIB_WCSCOLL@
+GL_GNULIB_WCSCPY = @GL_GNULIB_WCSCPY@
+GL_GNULIB_WCSCSPN = @GL_GNULIB_WCSCSPN@
+GL_GNULIB_WCSDUP = @GL_GNULIB_WCSDUP@
+GL_GNULIB_WCSFTIME = @GL_GNULIB_WCSFTIME@
+GL_GNULIB_WCSLEN = @GL_GNULIB_WCSLEN@
+GL_GNULIB_WCSNCASECMP = @GL_GNULIB_WCSNCASECMP@
+GL_GNULIB_WCSNCAT = @GL_GNULIB_WCSNCAT@
+GL_GNULIB_WCSNCMP = @GL_GNULIB_WCSNCMP@
+GL_GNULIB_WCSNCPY = @GL_GNULIB_WCSNCPY@
+GL_GNULIB_WCSNLEN = @GL_GNULIB_WCSNLEN@
+GL_GNULIB_WCSNRTOMBS = @GL_GNULIB_WCSNRTOMBS@
+GL_GNULIB_WCSPBRK = @GL_GNULIB_WCSPBRK@
+GL_GNULIB_WCSRCHR = @GL_GNULIB_WCSRCHR@
+GL_GNULIB_WCSRTOMBS = @GL_GNULIB_WCSRTOMBS@
+GL_GNULIB_WCSSPN = @GL_GNULIB_WCSSPN@
+GL_GNULIB_WCSSTR = @GL_GNULIB_WCSSTR@
+GL_GNULIB_WCSTOK = @GL_GNULIB_WCSTOK@
+GL_GNULIB_WCSWIDTH = @GL_GNULIB_WCSWIDTH@
+GL_GNULIB_WCSXFRM = @GL_GNULIB_WCSXFRM@
+GL_GNULIB_WCTOB = @GL_GNULIB_WCTOB@
+GL_GNULIB_WCTOMB = @GL_GNULIB_WCTOMB@
+GL_GNULIB_WCTRANS = @GL_GNULIB_WCTRANS@
+GL_GNULIB_WCTYPE = @GL_GNULIB_WCTYPE@
+GL_GNULIB_WCWIDTH = @GL_GNULIB_WCWIDTH@
+GL_GNULIB_WMEMCHR = @GL_GNULIB_WMEMCHR@
+GL_GNULIB_WMEMCMP = @GL_GNULIB_WMEMCMP@
+GL_GNULIB_WMEMCPY = @GL_GNULIB_WMEMCPY@
+GL_GNULIB_WMEMMOVE = @GL_GNULIB_WMEMMOVE@
+GL_GNULIB_WMEMPCPY = @GL_GNULIB_WMEMPCPY@
+GL_GNULIB_WMEMSET = @GL_GNULIB_WMEMSET@
+GL_GNULIB_WRITE = @GL_GNULIB_WRITE@
+GL_GNULIB__EXIT = @GL_GNULIB__EXIT@
+GMSGFMT = @GMSGFMT@
+GMSGFMT_015 = @GMSGFMT_015@
+GNULIBHEADERS_OVERRIDE_WINT_T = @GNULIBHEADERS_OVERRIDE_WINT_T@
+GNULIB_GETTIMEOFDAY = @GNULIB_GETTIMEOFDAY@
+GNULIB_TEST_WARN_CFLAGS = @GNULIB_TEST_WARN_CFLAGS@
+GNULIB_WARN_CFLAGS = @GNULIB_WARN_CFLAGS@
+GREP = @GREP@
+HAVE_ACCEPT4 = @HAVE_ACCEPT4@
+HAVE_ALIGNED_ALLOC = @HAVE_ALIGNED_ALLOC@
+HAVE_ALLOCA_H = @HAVE_ALLOCA_H@
+HAVE_ALPHASORT = @HAVE_ALPHASORT@
+HAVE_ARPA_INET_H = @HAVE_ARPA_INET_H@
+HAVE_ATOLL = @HAVE_ATOLL@
+HAVE_BTOWC = @HAVE_BTOWC@
+HAVE_C99_STDINT_H = @HAVE_C99_STDINT_H@
+HAVE_CANONICALIZE_FILE_NAME = @HAVE_CANONICALIZE_FILE_NAME@
+HAVE_CHOWN = @HAVE_CHOWN@
+HAVE_CLOSEDIR = @HAVE_CLOSEDIR@
+HAVE_COPY_FILE_RANGE = @HAVE_COPY_FILE_RANGE@
+HAVE_CRTDEFS_H = @HAVE_CRTDEFS_H@
+HAVE_DECL_DIRFD = @HAVE_DECL_DIRFD@
+HAVE_DECL_ECVT = @HAVE_DECL_ECVT@
+HAVE_DECL_ENVIRON = @HAVE_DECL_ENVIRON@
+HAVE_DECL_EXECVPE = @HAVE_DECL_EXECVPE@
+HAVE_DECL_FCHDIR = @HAVE_DECL_FCHDIR@
+HAVE_DECL_FCLOSEALL = @HAVE_DECL_FCLOSEALL@
+HAVE_DECL_FCVT = @HAVE_DECL_FCVT@
+HAVE_DECL_FDATASYNC = @HAVE_DECL_FDATASYNC@
+HAVE_DECL_FDOPENDIR = @HAVE_DECL_FDOPENDIR@
+HAVE_DECL_FPURGE = @HAVE_DECL_FPURGE@
+HAVE_DECL_FSEEKO = @HAVE_DECL_FSEEKO@
+HAVE_DECL_FTELLO = @HAVE_DECL_FTELLO@
+HAVE_DECL_GCVT = @HAVE_DECL_GCVT@
+HAVE_DECL_GETDELIM = @HAVE_DECL_GETDELIM@
+HAVE_DECL_GETDOMAINNAME = @HAVE_DECL_GETDOMAINNAME@
+HAVE_DECL_GETLINE = @HAVE_DECL_GETLINE@
+HAVE_DECL_GETLOADAVG = @HAVE_DECL_GETLOADAVG@
+HAVE_DECL_GETLOGIN = @HAVE_DECL_GETLOGIN@
+HAVE_DECL_GETLOGIN_R = @HAVE_DECL_GETLOGIN_R@
+HAVE_DECL_GETPAGESIZE = @HAVE_DECL_GETPAGESIZE@
+HAVE_DECL_GETUSERSHELL = @HAVE_DECL_GETUSERSHELL@
+HAVE_DECL_IMAXABS = @HAVE_DECL_IMAXABS@
+HAVE_DECL_IMAXDIV = @HAVE_DECL_IMAXDIV@
+HAVE_DECL_INET_NTOP = @HAVE_DECL_INET_NTOP@
+HAVE_DECL_INET_PTON = @HAVE_DECL_INET_PTON@
+HAVE_DECL_INITSTATE = @HAVE_DECL_INITSTATE@
+HAVE_DECL_LOCALTIME_R = @HAVE_DECL_LOCALTIME_R@
+HAVE_DECL_MEMMEM = @HAVE_DECL_MEMMEM@
+HAVE_DECL_MEMRCHR = @HAVE_DECL_MEMRCHR@
+HAVE_DECL_OBSTACK_PRINTF = @HAVE_DECL_OBSTACK_PRINTF@
+HAVE_DECL_SETENV = @HAVE_DECL_SETENV@
+HAVE_DECL_SETHOSTNAME = @HAVE_DECL_SETHOSTNAME@
+HAVE_DECL_SETSTATE = @HAVE_DECL_SETSTATE@
+HAVE_DECL_SNPRINTF = @HAVE_DECL_SNPRINTF@
+HAVE_DECL_STRDUP = @HAVE_DECL_STRDUP@
+HAVE_DECL_STRERROR_R = @HAVE_DECL_STRERROR_R@
+HAVE_DECL_STRNDUP = @HAVE_DECL_STRNDUP@
+HAVE_DECL_STRNLEN = @HAVE_DECL_STRNLEN@
+HAVE_DECL_STRSIGNAL = @HAVE_DECL_STRSIGNAL@
+HAVE_DECL_STRTOIMAX = @HAVE_DECL_STRTOIMAX@
+HAVE_DECL_STRTOK_R = @HAVE_DECL_STRTOK_R@
+HAVE_DECL_STRTOUMAX = @HAVE_DECL_STRTOUMAX@
+HAVE_DECL_TRUNCATE = @HAVE_DECL_TRUNCATE@
+HAVE_DECL_TTYNAME_R = @HAVE_DECL_TTYNAME_R@
+HAVE_DECL_UNSETENV = @HAVE_DECL_UNSETENV@
+HAVE_DECL_VSNPRINTF = @HAVE_DECL_VSNPRINTF@
+HAVE_DECL_WCSDUP = @HAVE_DECL_WCSDUP@
+HAVE_DECL_WCTOB = @HAVE_DECL_WCTOB@
+HAVE_DECL_WCWIDTH = @HAVE_DECL_WCWIDTH@
+HAVE_DIRENT_H = @HAVE_DIRENT_H@
+HAVE_DPRINTF = @HAVE_DPRINTF@
+HAVE_DUP3 = @HAVE_DUP3@
+HAVE_DUPLOCALE = @HAVE_DUPLOCALE@
+HAVE_EUIDACCESS = @HAVE_EUIDACCESS@
+HAVE_EXECVPE = @HAVE_EXECVPE@
+HAVE_EXPLICIT_BZERO = @HAVE_EXPLICIT_BZERO@
+HAVE_FACCESSAT = @HAVE_FACCESSAT@
+HAVE_FCHDIR = @HAVE_FCHDIR@
+HAVE_FCHMODAT = @HAVE_FCHMODAT@
+HAVE_FCHOWNAT = @HAVE_FCHOWNAT@
+HAVE_FCNTL = @HAVE_FCNTL@
+HAVE_FDATASYNC = @HAVE_FDATASYNC@
+HAVE_FDOPENDIR = @HAVE_FDOPENDIR@
+HAVE_FEATURES_H = @HAVE_FEATURES_H@
+HAVE_FFSL = @HAVE_FFSL@
+HAVE_FFSLL = @HAVE_FFSLL@
+HAVE_FNMATCH = @HAVE_FNMATCH@
+HAVE_FNMATCH_H = @HAVE_FNMATCH_H@
+HAVE_FREELOCALE = @HAVE_FREELOCALE@
+HAVE_FSEEKO = @HAVE_FSEEKO@
+HAVE_FSTATAT = @HAVE_FSTATAT@
+HAVE_FSYNC = @HAVE_FSYNC@
+HAVE_FTELLO = @HAVE_FTELLO@
+HAVE_FTRUNCATE = @HAVE_FTRUNCATE@
+HAVE_FUTIMENS = @HAVE_FUTIMENS@
+HAVE_GETDTABLESIZE = @HAVE_GETDTABLESIZE@
+HAVE_GETENTROPY = @HAVE_GETENTROPY@
+HAVE_GETGROUPS = @HAVE_GETGROUPS@
+HAVE_GETHOSTNAME = @HAVE_GETHOSTNAME@
+HAVE_GETLOGIN = @HAVE_GETLOGIN@
+HAVE_GETOPT_H = @HAVE_GETOPT_H@
+HAVE_GETPAGESIZE = @HAVE_GETPAGESIZE@
+HAVE_GETPASS = @HAVE_GETPASS@
+HAVE_GETSUBOPT = @HAVE_GETSUBOPT@
+HAVE_GETTIMEOFDAY = @HAVE_GETTIMEOFDAY@
+HAVE_GETUMASK = @HAVE_GETUMASK@
+HAVE_GRANTPT = @HAVE_GRANTPT@
+HAVE_GROUP_MEMBER = @HAVE_GROUP_MEMBER@
+HAVE_IMAXDIV_T = @HAVE_IMAXDIV_T@
+HAVE_INITSTATE = @HAVE_INITSTATE@
+HAVE_INTTYPES_H = @HAVE_INTTYPES_H@
+HAVE_ISBLANK = @HAVE_ISBLANK@
+HAVE_ISWBLANK = @HAVE_ISWBLANK@
+HAVE_ISWCNTRL = @HAVE_ISWCNTRL@
+HAVE_LANGINFO_ALTMON = @HAVE_LANGINFO_ALTMON@
+HAVE_LANGINFO_CODESET = @HAVE_LANGINFO_CODESET@
+HAVE_LANGINFO_ERA = @HAVE_LANGINFO_ERA@
+HAVE_LANGINFO_H = @HAVE_LANGINFO_H@
+HAVE_LANGINFO_T_FMT_AMPM = @HAVE_LANGINFO_T_FMT_AMPM@
+HAVE_LANGINFO_YESEXPR = @HAVE_LANGINFO_YESEXPR@
+HAVE_LCHMOD = @HAVE_LCHMOD@
+HAVE_LCHOWN = @HAVE_LCHOWN@
+HAVE_LIBSIGSEGV = @HAVE_LIBSIGSEGV@
+HAVE_LINK = @HAVE_LINK@
+HAVE_LINKAT = @HAVE_LINKAT@
+HAVE_LSTAT = @HAVE_LSTAT@
+HAVE_MAX_ALIGN_T = @HAVE_MAX_ALIGN_T@
+HAVE_MBRLEN = @HAVE_MBRLEN@
+HAVE_MBRTOWC = @HAVE_MBRTOWC@
+HAVE_MBSINIT = @HAVE_MBSINIT@
+HAVE_MBSLEN = @HAVE_MBSLEN@
+HAVE_MBSNRTOWCS = @HAVE_MBSNRTOWCS@
+HAVE_MBSRTOWCS = @HAVE_MBSRTOWCS@
+HAVE_MBTOWC = @HAVE_MBTOWC@
+HAVE_MEMPCPY = @HAVE_MEMPCPY@
+HAVE_MKDIRAT = @HAVE_MKDIRAT@
+HAVE_MKDTEMP = @HAVE_MKDTEMP@
+HAVE_MKFIFO = @HAVE_MKFIFO@
+HAVE_MKFIFOAT = @HAVE_MKFIFOAT@
+HAVE_MKNOD = @HAVE_MKNOD@
+HAVE_MKNODAT = @HAVE_MKNODAT@
+HAVE_MKOSTEMP = @HAVE_MKOSTEMP@
+HAVE_MKOSTEMPS = @HAVE_MKOSTEMPS@
+HAVE_MKSTEMP = @HAVE_MKSTEMP@
+HAVE_MKSTEMPS = @HAVE_MKSTEMPS@
+HAVE_MSVC_INVALID_PARAMETER_HANDLER = @HAVE_MSVC_INVALID_PARAMETER_HANDLER@
+HAVE_NANOSLEEP = @HAVE_NANOSLEEP@
+HAVE_NETINET_IN_H = @HAVE_NETINET_IN_H@
+HAVE_NEWLOCALE = @HAVE_NEWLOCALE@
+HAVE_NL_LANGINFO = @HAVE_NL_LANGINFO@
+HAVE_OPENAT = @HAVE_OPENAT@
+HAVE_OPENDIR = @HAVE_OPENDIR@
+HAVE_OS_H = @HAVE_OS_H@
+HAVE_PCLOSE = @HAVE_PCLOSE@
+HAVE_PIPE = @HAVE_PIPE@
+HAVE_PIPE2 = @HAVE_PIPE2@
+HAVE_POPEN = @HAVE_POPEN@
+HAVE_POSIX_MEMALIGN = @HAVE_POSIX_MEMALIGN@
+HAVE_POSIX_OPENPT = @HAVE_POSIX_OPENPT@
+HAVE_POSIX_SIGNALBLOCKING = @HAVE_POSIX_SIGNALBLOCKING@
+HAVE_PREAD = @HAVE_PREAD@
+HAVE_PSELECT = @HAVE_PSELECT@
+HAVE_PTHREAD_ATTR_DESTROY = @HAVE_PTHREAD_ATTR_DESTROY@
+HAVE_PTHREAD_ATTR_GETDETACHSTATE = @HAVE_PTHREAD_ATTR_GETDETACHSTATE@
+HAVE_PTHREAD_ATTR_INIT = @HAVE_PTHREAD_ATTR_INIT@
+HAVE_PTHREAD_ATTR_SETDETACHSTATE = @HAVE_PTHREAD_ATTR_SETDETACHSTATE@
+HAVE_PTHREAD_CONDATTR_DESTROY = @HAVE_PTHREAD_CONDATTR_DESTROY@
+HAVE_PTHREAD_CONDATTR_INIT = @HAVE_PTHREAD_CONDATTR_INIT@
+HAVE_PTHREAD_COND_BROADCAST = @HAVE_PTHREAD_COND_BROADCAST@
+HAVE_PTHREAD_COND_DESTROY = @HAVE_PTHREAD_COND_DESTROY@
+HAVE_PTHREAD_COND_INIT = @HAVE_PTHREAD_COND_INIT@
+HAVE_PTHREAD_COND_SIGNAL = @HAVE_PTHREAD_COND_SIGNAL@
+HAVE_PTHREAD_COND_TIMEDWAIT = @HAVE_PTHREAD_COND_TIMEDWAIT@
+HAVE_PTHREAD_COND_WAIT = @HAVE_PTHREAD_COND_WAIT@
+HAVE_PTHREAD_CREATE = @HAVE_PTHREAD_CREATE@
+HAVE_PTHREAD_CREATE_DETACHED = @HAVE_PTHREAD_CREATE_DETACHED@
+HAVE_PTHREAD_DETACH = @HAVE_PTHREAD_DETACH@
+HAVE_PTHREAD_EQUAL = @HAVE_PTHREAD_EQUAL@
+HAVE_PTHREAD_EXIT = @HAVE_PTHREAD_EXIT@
+HAVE_PTHREAD_GETSPECIFIC = @HAVE_PTHREAD_GETSPECIFIC@
+HAVE_PTHREAD_H = @HAVE_PTHREAD_H@
+HAVE_PTHREAD_JOIN = @HAVE_PTHREAD_JOIN@
+HAVE_PTHREAD_KEY_CREATE = @HAVE_PTHREAD_KEY_CREATE@
+HAVE_PTHREAD_KEY_DELETE = @HAVE_PTHREAD_KEY_DELETE@
+HAVE_PTHREAD_MUTEXATTR_DESTROY = @HAVE_PTHREAD_MUTEXATTR_DESTROY@
+HAVE_PTHREAD_MUTEXATTR_GETROBUST = @HAVE_PTHREAD_MUTEXATTR_GETROBUST@
+HAVE_PTHREAD_MUTEXATTR_GETTYPE = @HAVE_PTHREAD_MUTEXATTR_GETTYPE@
+HAVE_PTHREAD_MUTEXATTR_INIT = @HAVE_PTHREAD_MUTEXATTR_INIT@
+HAVE_PTHREAD_MUTEXATTR_SETROBUST = @HAVE_PTHREAD_MUTEXATTR_SETROBUST@
+HAVE_PTHREAD_MUTEXATTR_SETTYPE = @HAVE_PTHREAD_MUTEXATTR_SETTYPE@
+HAVE_PTHREAD_MUTEX_DESTROY = @HAVE_PTHREAD_MUTEX_DESTROY@
+HAVE_PTHREAD_MUTEX_INIT = @HAVE_PTHREAD_MUTEX_INIT@
+HAVE_PTHREAD_MUTEX_LOCK = @HAVE_PTHREAD_MUTEX_LOCK@
+HAVE_PTHREAD_MUTEX_RECURSIVE = @HAVE_PTHREAD_MUTEX_RECURSIVE@
+HAVE_PTHREAD_MUTEX_ROBUST = @HAVE_PTHREAD_MUTEX_ROBUST@
+HAVE_PTHREAD_MUTEX_TIMEDLOCK = @HAVE_PTHREAD_MUTEX_TIMEDLOCK@
+HAVE_PTHREAD_MUTEX_TRYLOCK = @HAVE_PTHREAD_MUTEX_TRYLOCK@
+HAVE_PTHREAD_MUTEX_UNLOCK = @HAVE_PTHREAD_MUTEX_UNLOCK@
+HAVE_PTHREAD_ONCE = @HAVE_PTHREAD_ONCE@
+HAVE_PTHREAD_PROCESS_SHARED = @HAVE_PTHREAD_PROCESS_SHARED@
+HAVE_PTHREAD_RWLOCKATTR_DESTROY = @HAVE_PTHREAD_RWLOCKATTR_DESTROY@
+HAVE_PTHREAD_RWLOCKATTR_INIT = @HAVE_PTHREAD_RWLOCKATTR_INIT@
+HAVE_PTHREAD_RWLOCK_DESTROY = @HAVE_PTHREAD_RWLOCK_DESTROY@
+HAVE_PTHREAD_RWLOCK_INIT = @HAVE_PTHREAD_RWLOCK_INIT@
+HAVE_PTHREAD_RWLOCK_RDLOCK = @HAVE_PTHREAD_RWLOCK_RDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK = @HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+HAVE_PTHREAD_RWLOCK_TRYRDLOCK = @HAVE_PTHREAD_RWLOCK_TRYRDLOCK@
+HAVE_PTHREAD_RWLOCK_TRYWRLOCK = @HAVE_PTHREAD_RWLOCK_TRYWRLOCK@
+HAVE_PTHREAD_RWLOCK_UNLOCK = @HAVE_PTHREAD_RWLOCK_UNLOCK@
+HAVE_PTHREAD_RWLOCK_WRLOCK = @HAVE_PTHREAD_RWLOCK_WRLOCK@
+HAVE_PTHREAD_SELF = @HAVE_PTHREAD_SELF@
+HAVE_PTHREAD_SETSPECIFIC = @HAVE_PTHREAD_SETSPECIFIC@
+HAVE_PTHREAD_SIGMASK = @HAVE_PTHREAD_SIGMASK@
+HAVE_PTHREAD_SPINLOCK_T = @HAVE_PTHREAD_SPINLOCK_T@
+HAVE_PTHREAD_SPIN_DESTROY = @HAVE_PTHREAD_SPIN_DESTROY@
+HAVE_PTHREAD_SPIN_INIT = @HAVE_PTHREAD_SPIN_INIT@
+HAVE_PTHREAD_SPIN_LOCK = @HAVE_PTHREAD_SPIN_LOCK@
+HAVE_PTHREAD_SPIN_TRYLOCK = @HAVE_PTHREAD_SPIN_TRYLOCK@
+HAVE_PTHREAD_SPIN_UNLOCK = @HAVE_PTHREAD_SPIN_UNLOCK@
+HAVE_PTHREAD_T = @HAVE_PTHREAD_T@
+HAVE_PTSNAME = @HAVE_PTSNAME@
+HAVE_PTSNAME_R = @HAVE_PTSNAME_R@
+HAVE_PWRITE = @HAVE_PWRITE@
+HAVE_QSORT_R = @HAVE_QSORT_R@
+HAVE_RAISE = @HAVE_RAISE@
+HAVE_RANDOM = @HAVE_RANDOM@
+HAVE_RANDOM_H = @HAVE_RANDOM_H@
+HAVE_RANDOM_R = @HAVE_RANDOM_R@
+HAVE_RAWMEMCHR = @HAVE_RAWMEMCHR@
+HAVE_READDIR = @HAVE_READDIR@
+HAVE_READLINK = @HAVE_READLINK@
+HAVE_READLINKAT = @HAVE_READLINKAT@
+HAVE_REALLOCARRAY = @HAVE_REALLOCARRAY@
+HAVE_REALPATH = @HAVE_REALPATH@
+HAVE_RENAMEAT = @HAVE_RENAMEAT@
+HAVE_REWINDDIR = @HAVE_REWINDDIR@
+HAVE_RPMATCH = @HAVE_RPMATCH@
+HAVE_SA_FAMILY_T = @HAVE_SA_FAMILY_T@
+HAVE_SCANDIR = @HAVE_SCANDIR@
+HAVE_SCHED_H = @HAVE_SCHED_H@
+HAVE_SCHED_YIELD = @HAVE_SCHED_YIELD@
+HAVE_SECURE_GETENV = @HAVE_SECURE_GETENV@
+HAVE_SETENV = @HAVE_SETENV@
+HAVE_SETHOSTNAME = @HAVE_SETHOSTNAME@
+HAVE_SETSTATE = @HAVE_SETSTATE@
+HAVE_SIGABBREV_NP = @HAVE_SIGABBREV_NP@
+HAVE_SIGACTION = @HAVE_SIGACTION@
+HAVE_SIGDESCR_NP = @HAVE_SIGDESCR_NP@
+HAVE_SIGHANDLER_T = @HAVE_SIGHANDLER_T@
+HAVE_SIGINFO_T = @HAVE_SIGINFO_T@
+HAVE_SIGNED_SIG_ATOMIC_T = @HAVE_SIGNED_SIG_ATOMIC_T@
+HAVE_SIGNED_WCHAR_T = @HAVE_SIGNED_WCHAR_T@
+HAVE_SIGNED_WINT_T = @HAVE_SIGNED_WINT_T@
+HAVE_SIGSET_T = @HAVE_SIGSET_T@
+HAVE_SLEEP = @HAVE_SLEEP@
+HAVE_STDINT_H = @HAVE_STDINT_H@
+HAVE_STPCPY = @HAVE_STPCPY@
+HAVE_STPNCPY = @HAVE_STPNCPY@
+HAVE_STRCASESTR = @HAVE_STRCASESTR@
+HAVE_STRCHRNUL = @HAVE_STRCHRNUL@
+HAVE_STRERRORNAME_NP = @HAVE_STRERRORNAME_NP@
+HAVE_STRPBRK = @HAVE_STRPBRK@
+HAVE_STRPTIME = @HAVE_STRPTIME@
+HAVE_STRSEP = @HAVE_STRSEP@
+HAVE_STRTOD = @HAVE_STRTOD@
+HAVE_STRTOL = @HAVE_STRTOL@
+HAVE_STRTOLD = @HAVE_STRTOLD@
+HAVE_STRTOLL = @HAVE_STRTOLL@
+HAVE_STRTOUL = @HAVE_STRTOUL@
+HAVE_STRTOULL = @HAVE_STRTOULL@
+HAVE_STRUCT_RANDOM_DATA = @HAVE_STRUCT_RANDOM_DATA@
+HAVE_STRUCT_SCHED_PARAM = @HAVE_STRUCT_SCHED_PARAM@
+HAVE_STRUCT_SIGACTION_SA_SIGACTION = @HAVE_STRUCT_SIGACTION_SA_SIGACTION@
+HAVE_STRUCT_SOCKADDR_STORAGE = @HAVE_STRUCT_SOCKADDR_STORAGE@
+HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = @HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY@
+HAVE_STRUCT_TIMEVAL = @HAVE_STRUCT_TIMEVAL@
+HAVE_STRVERSCMP = @HAVE_STRVERSCMP@
+HAVE_SYMLINK = @HAVE_SYMLINK@
+HAVE_SYMLINKAT = @HAVE_SYMLINKAT@
+HAVE_SYS_BITYPES_H = @HAVE_SYS_BITYPES_H@
+HAVE_SYS_CDEFS_H = @HAVE_SYS_CDEFS_H@
+HAVE_SYS_INTTYPES_H = @HAVE_SYS_INTTYPES_H@
+HAVE_SYS_IOCTL_H = @HAVE_SYS_IOCTL_H@
+HAVE_SYS_LOADAVG_H = @HAVE_SYS_LOADAVG_H@
+HAVE_SYS_PARAM_H = @HAVE_SYS_PARAM_H@
+HAVE_SYS_SELECT_H = @HAVE_SYS_SELECT_H@
+HAVE_SYS_SOCKET_H = @HAVE_SYS_SOCKET_H@
+HAVE_SYS_TIME_H = @HAVE_SYS_TIME_H@
+HAVE_SYS_TYPES_H = @HAVE_SYS_TYPES_H@
+HAVE_SYS_UIO_H = @HAVE_SYS_UIO_H@
+HAVE_TIMEGM = @HAVE_TIMEGM@
+HAVE_TIMESPEC_GET = @HAVE_TIMESPEC_GET@
+HAVE_TIMEZONE_T = @HAVE_TIMEZONE_T@
+HAVE_TYPE_VOLATILE_SIG_ATOMIC_T = @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
+HAVE_UNISTD_H = @HAVE_UNISTD_H@
+HAVE_UNLINKAT = @HAVE_UNLINKAT@
+HAVE_UNLOCKPT = @HAVE_UNLOCKPT@
+HAVE_USLEEP = @HAVE_USLEEP@
+HAVE_UTIMENSAT = @HAVE_UTIMENSAT@
+HAVE_VASPRINTF = @HAVE_VASPRINTF@
+HAVE_VDPRINTF = @HAVE_VDPRINTF@
+HAVE_VISIBILITY = @HAVE_VISIBILITY@
+HAVE_WCHAR_H = @HAVE_WCHAR_H@
+HAVE_WCHAR_T = @HAVE_WCHAR_T@
+HAVE_WCPCPY = @HAVE_WCPCPY@
+HAVE_WCPNCPY = @HAVE_WCPNCPY@
+HAVE_WCRTOMB = @HAVE_WCRTOMB@
+HAVE_WCSCASECMP = @HAVE_WCSCASECMP@
+HAVE_WCSCAT = @HAVE_WCSCAT@
+HAVE_WCSCHR = @HAVE_WCSCHR@
+HAVE_WCSCMP = @HAVE_WCSCMP@
+HAVE_WCSCOLL = @HAVE_WCSCOLL@
+HAVE_WCSCPY = @HAVE_WCSCPY@
+HAVE_WCSCSPN = @HAVE_WCSCSPN@
+HAVE_WCSDUP = @HAVE_WCSDUP@
+HAVE_WCSFTIME = @HAVE_WCSFTIME@
+HAVE_WCSLEN = @HAVE_WCSLEN@
+HAVE_WCSNCASECMP = @HAVE_WCSNCASECMP@
+HAVE_WCSNCAT = @HAVE_WCSNCAT@
+HAVE_WCSNCMP = @HAVE_WCSNCMP@
+HAVE_WCSNCPY = @HAVE_WCSNCPY@
+HAVE_WCSNLEN = @HAVE_WCSNLEN@
+HAVE_WCSNRTOMBS = @HAVE_WCSNRTOMBS@
+HAVE_WCSPBRK = @HAVE_WCSPBRK@
+HAVE_WCSRCHR = @HAVE_WCSRCHR@
+HAVE_WCSRTOMBS = @HAVE_WCSRTOMBS@
+HAVE_WCSSPN = @HAVE_WCSSPN@
+HAVE_WCSSTR = @HAVE_WCSSTR@
+HAVE_WCSTOK = @HAVE_WCSTOK@
+HAVE_WCSWIDTH = @HAVE_WCSWIDTH@
+HAVE_WCSXFRM = @HAVE_WCSXFRM@
+HAVE_WCTRANS_T = @HAVE_WCTRANS_T@
+HAVE_WCTYPE_H = @HAVE_WCTYPE_H@
+HAVE_WCTYPE_T = @HAVE_WCTYPE_T@
+HAVE_WINSOCK2_H = @HAVE_WINSOCK2_H@
+HAVE_WINT_T = @HAVE_WINT_T@
+HAVE_WMEMCHR = @HAVE_WMEMCHR@
+HAVE_WMEMCMP = @HAVE_WMEMCMP@
+HAVE_WMEMCPY = @HAVE_WMEMCPY@
+HAVE_WMEMMOVE = @HAVE_WMEMMOVE@
+HAVE_WMEMPCPY = @HAVE_WMEMPCPY@
+HAVE_WMEMSET = @HAVE_WMEMSET@
+HAVE_WS2TCPIP_H = @HAVE_WS2TCPIP_H@
+HAVE_XLOCALE_H = @HAVE_XLOCALE_H@
+HAVE__BOOL = @HAVE__BOOL@
+HAVE__EXIT = @HAVE__EXIT@
+HOST_CPU = @HOST_CPU@
+HOST_CPU_C_ABI = @HOST_CPU_C_ABI@
+ICONV_CONST = @ICONV_CONST@
+ICONV_H = @ICONV_H@
+INCLUDE_NEXT = @INCLUDE_NEXT@
+INCLUDE_NEXT_AS_FIRST_DIRECTIVE = @INCLUDE_NEXT_AS_FIRST_DIRECTIVE@
+INET_PTON_LIB = @INET_PTON_LIB@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INT32_MAX_LT_INTMAX_MAX = @INT32_MAX_LT_INTMAX_MAX@
+INT64_MAX_EQ_LONG_MAX = @INT64_MAX_EQ_LONG_MAX@
+INTLLIBS = @INTLLIBS@
+INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
+LDFLAGS = @LDFLAGS@
+LIBCSTACK = @LIBCSTACK@
+LIBGREPUTILS_LIBDEPS = @LIBGREPUTILS_LIBDEPS@
+LIBGREPUTILS_LTLIBDEPS = @LIBGREPUTILS_LTLIBDEPS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBMULTITHREAD = @LIBMULTITHREAD@
+LIBOBJS = @LIBOBJS@
+LIBPMULTITHREAD = @LIBPMULTITHREAD@
+LIBPTHREAD = @LIBPTHREAD@
+LIBS = @LIBS@
+LIBSIGSEGV = @LIBSIGSEGV@
+LIBSIGSEGV_PREFIX = @LIBSIGSEGV_PREFIX@
+LIBSOCKET = @LIBSOCKET@
+LIBSTDTHREAD = @LIBSTDTHREAD@
+LIBTESTS_LIBDEPS = @LIBTESTS_LIBDEPS@
+LIBTHREAD = @LIBTHREAD@
+LIBUNISTRING_UNISTR_H = @LIBUNISTRING_UNISTR_H@
+LIBUNISTRING_UNITYPES_H = @LIBUNISTRING_UNITYPES_H@
+LIBUNISTRING_UNIWIDTH_H = @LIBUNISTRING_UNIWIDTH_H@
+LIB_HARD_LOCALE = @LIB_HARD_LOCALE@
+LIB_MBRTOWC = @LIB_MBRTOWC@
+LIB_NANOSLEEP = @LIB_NANOSLEEP@
+LIB_NL_LANGINFO = @LIB_NL_LANGINFO@
+LIB_PTHREAD = @LIB_PTHREAD@
+LIB_PTHREAD_SIGMASK = @LIB_PTHREAD_SIGMASK@
+LIB_SCHED_YIELD = @LIB_SCHED_YIELD@
+LIB_SELECT = @LIB_SELECT@
+LIB_SETLOCALE = @LIB_SETLOCALE@
+LIB_SETLOCALE_NULL = @LIB_SETLOCALE_NULL@
+LIMITS_H = @LIMITS_H@
+LOCALCHARSET_TESTS_ENVIRONMENT = @LOCALCHARSET_TESTS_ENVIRONMENT@
+LOCALENAME_ENHANCE_LOCALE_FUNCS = @LOCALENAME_ENHANCE_LOCALE_FUNCS@
+LOCALE_FR = @LOCALE_FR@
+LOCALE_FR_UTF8 = @LOCALE_FR_UTF8@
+LOCALE_JA = @LOCALE_JA@
+LOCALE_TR_UTF8 = @LOCALE_TR_UTF8@
+LOCALE_ZH_CN = @LOCALE_ZH_CN@
+LTLIBCSTACK = @LTLIBCSTACK@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBMULTITHREAD = @LTLIBMULTITHREAD@
+LTLIBOBJS = @LTLIBOBJS@
+LTLIBSIGSEGV = @LTLIBSIGSEGV@
+LTLIBTHREAD = @LTLIBTHREAD@
+MAKEINFO = @MAKEINFO@
+MKDIR_P = @MKDIR_P@
+MSGFMT = @MSGFMT@
+MSGFMT_015 = @MSGFMT_015@
+MSGMERGE = @MSGMERGE@
+NETINET_IN_H = @NETINET_IN_H@
+NEXT_ARPA_INET_H = @NEXT_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H = @NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_CTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_CTYPE_H@
+NEXT_AS_FIRST_DIRECTIVE_DIRENT_H = @NEXT_AS_FIRST_DIRECTIVE_DIRENT_H@
+NEXT_AS_FIRST_DIRECTIVE_ERRNO_H = @NEXT_AS_FIRST_DIRECTIVE_ERRNO_H@
+NEXT_AS_FIRST_DIRECTIVE_FCNTL_H = @NEXT_AS_FIRST_DIRECTIVE_FCNTL_H@
+NEXT_AS_FIRST_DIRECTIVE_FLOAT_H = @NEXT_AS_FIRST_DIRECTIVE_FLOAT_H@
+NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H = @NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H@
+NEXT_AS_FIRST_DIRECTIVE_GETOPT_H = @NEXT_AS_FIRST_DIRECTIVE_GETOPT_H@
+NEXT_AS_FIRST_DIRECTIVE_ICONV_H = @NEXT_AS_FIRST_DIRECTIVE_ICONV_H@
+NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H = @NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H = @NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H@
+NEXT_AS_FIRST_DIRECTIVE_LIMITS_H = @NEXT_AS_FIRST_DIRECTIVE_LIMITS_H@
+NEXT_AS_FIRST_DIRECTIVE_LOCALE_H = @NEXT_AS_FIRST_DIRECTIVE_LOCALE_H@
+NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H = @NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H@
+NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H = @NEXT_AS_FIRST_DIRECTIVE_PTHREAD_H@
+NEXT_AS_FIRST_DIRECTIVE_SCHED_H = @NEXT_AS_FIRST_DIRECTIVE_SCHED_H@
+NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H = @NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H@
+NEXT_AS_FIRST_DIRECTIVE_STDARG_H = @NEXT_AS_FIRST_DIRECTIVE_STDARG_H@
+NEXT_AS_FIRST_DIRECTIVE_STDDEF_H = @NEXT_AS_FIRST_DIRECTIVE_STDDEF_H@
+NEXT_AS_FIRST_DIRECTIVE_STDINT_H = @NEXT_AS_FIRST_DIRECTIVE_STDINT_H@
+NEXT_AS_FIRST_DIRECTIVE_STDIO_H = @NEXT_AS_FIRST_DIRECTIVE_STDIO_H@
+NEXT_AS_FIRST_DIRECTIVE_STDLIB_H = @NEXT_AS_FIRST_DIRECTIVE_STDLIB_H@
+NEXT_AS_FIRST_DIRECTIVE_STRING_H = @NEXT_AS_FIRST_DIRECTIVE_STRING_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H@
+NEXT_AS_FIRST_DIRECTIVE_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_UNISTD_H = @NEXT_AS_FIRST_DIRECTIVE_UNISTD_H@
+NEXT_AS_FIRST_DIRECTIVE_WCHAR_H = @NEXT_AS_FIRST_DIRECTIVE_WCHAR_H@
+NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_WCTYPE_H@
+NEXT_CTYPE_H = @NEXT_CTYPE_H@
+NEXT_DIRENT_H = @NEXT_DIRENT_H@
+NEXT_ERRNO_H = @NEXT_ERRNO_H@
+NEXT_FCNTL_H = @NEXT_FCNTL_H@
+NEXT_FLOAT_H = @NEXT_FLOAT_H@
+NEXT_FNMATCH_H = @NEXT_FNMATCH_H@
+NEXT_GETOPT_H = @NEXT_GETOPT_H@
+NEXT_ICONV_H = @NEXT_ICONV_H@
+NEXT_INTTYPES_H = @NEXT_INTTYPES_H@
+NEXT_LANGINFO_H = @NEXT_LANGINFO_H@
+NEXT_LIMITS_H = @NEXT_LIMITS_H@
+NEXT_LOCALE_H = @NEXT_LOCALE_H@
+NEXT_NETINET_IN_H = @NEXT_NETINET_IN_H@
+NEXT_PTHREAD_H = @NEXT_PTHREAD_H@
+NEXT_SCHED_H = @NEXT_SCHED_H@
+NEXT_SIGNAL_H = @NEXT_SIGNAL_H@
+NEXT_STDARG_H = @NEXT_STDARG_H@
+NEXT_STDDEF_H = @NEXT_STDDEF_H@
+NEXT_STDINT_H = @NEXT_STDINT_H@
+NEXT_STDIO_H = @NEXT_STDIO_H@
+NEXT_STDLIB_H = @NEXT_STDLIB_H@
+NEXT_STRING_H = @NEXT_STRING_H@
+NEXT_SYS_IOCTL_H = @NEXT_SYS_IOCTL_H@
+NEXT_SYS_SELECT_H = @NEXT_SYS_SELECT_H@
+NEXT_SYS_SOCKET_H = @NEXT_SYS_SOCKET_H@
+NEXT_SYS_STAT_H = @NEXT_SYS_STAT_H@
+NEXT_SYS_TIME_H = @NEXT_SYS_TIME_H@
+NEXT_SYS_TYPES_H = @NEXT_SYS_TYPES_H@
+NEXT_SYS_UIO_H = @NEXT_SYS_UIO_H@
+NEXT_TIME_H = @NEXT_TIME_H@
+NEXT_UNISTD_H = @NEXT_UNISTD_H@
+NEXT_WCHAR_H = @NEXT_WCHAR_H@
+NEXT_WCTYPE_H = @NEXT_WCTYPE_H@
+OBJEXT = @OBJEXT@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PCRE_CFLAGS = @PCRE_CFLAGS@
+PCRE_LIBS = @PCRE_LIBS@
+PERL = @PERL@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+POSUB = @POSUB@
+PRAGMA_COLUMNS = @PRAGMA_COLUMNS@
+PRAGMA_SYSTEM_HEADER = @PRAGMA_SYSTEM_HEADER@
+PRIPTR_PREFIX = @PRIPTR_PREFIX@
+PTHREAD_H_DEFINES_STRUCT_TIMESPEC = @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
+PTRDIFF_T_SUFFIX = @PTRDIFF_T_SUFFIX@
+RANLIB = @RANLIB@
+REPLACE_ACCESS = @REPLACE_ACCESS@
+REPLACE_ALIGNED_ALLOC = @REPLACE_ALIGNED_ALLOC@
+REPLACE_BTOWC = @REPLACE_BTOWC@
+REPLACE_CALLOC = @REPLACE_CALLOC@
+REPLACE_CANONICALIZE_FILE_NAME = @REPLACE_CANONICALIZE_FILE_NAME@
+REPLACE_CHOWN = @REPLACE_CHOWN@
+REPLACE_CLOSE = @REPLACE_CLOSE@
+REPLACE_CLOSEDIR = @REPLACE_CLOSEDIR@
+REPLACE_CREAT = @REPLACE_CREAT@
+REPLACE_CTIME = @REPLACE_CTIME@
+REPLACE_DIRFD = @REPLACE_DIRFD@
+REPLACE_DPRINTF = @REPLACE_DPRINTF@
+REPLACE_DUP = @REPLACE_DUP@
+REPLACE_DUP2 = @REPLACE_DUP2@
+REPLACE_DUPLOCALE = @REPLACE_DUPLOCALE@
+REPLACE_EXECL = @REPLACE_EXECL@
+REPLACE_EXECLE = @REPLACE_EXECLE@
+REPLACE_EXECLP = @REPLACE_EXECLP@
+REPLACE_EXECV = @REPLACE_EXECV@
+REPLACE_EXECVE = @REPLACE_EXECVE@
+REPLACE_EXECVP = @REPLACE_EXECVP@
+REPLACE_EXECVPE = @REPLACE_EXECVPE@
+REPLACE_FACCESSAT = @REPLACE_FACCESSAT@
+REPLACE_FCHMODAT = @REPLACE_FCHMODAT@
+REPLACE_FCHOWNAT = @REPLACE_FCHOWNAT@
+REPLACE_FCLOSE = @REPLACE_FCLOSE@
+REPLACE_FCNTL = @REPLACE_FCNTL@
+REPLACE_FDOPEN = @REPLACE_FDOPEN@
+REPLACE_FDOPENDIR = @REPLACE_FDOPENDIR@
+REPLACE_FFLUSH = @REPLACE_FFLUSH@
+REPLACE_FFSLL = @REPLACE_FFSLL@
+REPLACE_FNMATCH = @REPLACE_FNMATCH@
+REPLACE_FOPEN = @REPLACE_FOPEN@
+REPLACE_FPRINTF = @REPLACE_FPRINTF@
+REPLACE_FPURGE = @REPLACE_FPURGE@
+REPLACE_FREE = @REPLACE_FREE@
+REPLACE_FREELOCALE = @REPLACE_FREELOCALE@
+REPLACE_FREOPEN = @REPLACE_FREOPEN@
+REPLACE_FSEEK = @REPLACE_FSEEK@
+REPLACE_FSEEKO = @REPLACE_FSEEKO@
+REPLACE_FSTAT = @REPLACE_FSTAT@
+REPLACE_FSTATAT = @REPLACE_FSTATAT@
+REPLACE_FTELL = @REPLACE_FTELL@
+REPLACE_FTELLO = @REPLACE_FTELLO@
+REPLACE_FTRUNCATE = @REPLACE_FTRUNCATE@
+REPLACE_FUTIMENS = @REPLACE_FUTIMENS@
+REPLACE_GETCWD = @REPLACE_GETCWD@
+REPLACE_GETDELIM = @REPLACE_GETDELIM@
+REPLACE_GETDOMAINNAME = @REPLACE_GETDOMAINNAME@
+REPLACE_GETDTABLESIZE = @REPLACE_GETDTABLESIZE@
+REPLACE_GETGROUPS = @REPLACE_GETGROUPS@
+REPLACE_GETLINE = @REPLACE_GETLINE@
+REPLACE_GETLOGIN_R = @REPLACE_GETLOGIN_R@
+REPLACE_GETPAGESIZE = @REPLACE_GETPAGESIZE@
+REPLACE_GETPASS = @REPLACE_GETPASS@
+REPLACE_GETTIMEOFDAY = @REPLACE_GETTIMEOFDAY@
+REPLACE_GMTIME = @REPLACE_GMTIME@
+REPLACE_ICONV = @REPLACE_ICONV@
+REPLACE_ICONV_OPEN = @REPLACE_ICONV_OPEN@
+REPLACE_ICONV_UTF = @REPLACE_ICONV_UTF@
+REPLACE_INET_NTOP = @REPLACE_INET_NTOP@
+REPLACE_INET_PTON = @REPLACE_INET_PTON@
+REPLACE_INITSTATE = @REPLACE_INITSTATE@
+REPLACE_IOCTL = @REPLACE_IOCTL@
+REPLACE_ISATTY = @REPLACE_ISATTY@
+REPLACE_ISWBLANK = @REPLACE_ISWBLANK@
+REPLACE_ISWCNTRL = @REPLACE_ISWCNTRL@
+REPLACE_ISWDIGIT = @REPLACE_ISWDIGIT@
+REPLACE_ISWXDIGIT = @REPLACE_ISWXDIGIT@
+REPLACE_ITOLD = @REPLACE_ITOLD@
+REPLACE_LCHOWN = @REPLACE_LCHOWN@
+REPLACE_LINK = @REPLACE_LINK@
+REPLACE_LINKAT = @REPLACE_LINKAT@
+REPLACE_LOCALECONV = @REPLACE_LOCALECONV@
+REPLACE_LOCALTIME = @REPLACE_LOCALTIME@
+REPLACE_LOCALTIME_R = @REPLACE_LOCALTIME_R@
+REPLACE_LSEEK = @REPLACE_LSEEK@
+REPLACE_LSTAT = @REPLACE_LSTAT@
+REPLACE_MALLOC = @REPLACE_MALLOC@
+REPLACE_MBRLEN = @REPLACE_MBRLEN@
+REPLACE_MBRTOWC = @REPLACE_MBRTOWC@
+REPLACE_MBSINIT = @REPLACE_MBSINIT@
+REPLACE_MBSNRTOWCS = @REPLACE_MBSNRTOWCS@
+REPLACE_MBSRTOWCS = @REPLACE_MBSRTOWCS@
+REPLACE_MBSTATE_T = @REPLACE_MBSTATE_T@
+REPLACE_MBTOWC = @REPLACE_MBTOWC@
+REPLACE_MEMCHR = @REPLACE_MEMCHR@
+REPLACE_MEMMEM = @REPLACE_MEMMEM@
+REPLACE_MKDIR = @REPLACE_MKDIR@
+REPLACE_MKFIFO = @REPLACE_MKFIFO@
+REPLACE_MKFIFOAT = @REPLACE_MKFIFOAT@
+REPLACE_MKNOD = @REPLACE_MKNOD@
+REPLACE_MKNODAT = @REPLACE_MKNODAT@
+REPLACE_MKSTEMP = @REPLACE_MKSTEMP@
+REPLACE_MKTIME = @REPLACE_MKTIME@
+REPLACE_NANOSLEEP = @REPLACE_NANOSLEEP@
+REPLACE_NEWLOCALE = @REPLACE_NEWLOCALE@
+REPLACE_NL_LANGINFO = @REPLACE_NL_LANGINFO@
+REPLACE_NULL = @REPLACE_NULL@
+REPLACE_OBSTACK_PRINTF = @REPLACE_OBSTACK_PRINTF@
+REPLACE_OPEN = @REPLACE_OPEN@
+REPLACE_OPENAT = @REPLACE_OPENAT@
+REPLACE_OPENDIR = @REPLACE_OPENDIR@
+REPLACE_PERROR = @REPLACE_PERROR@
+REPLACE_POPEN = @REPLACE_POPEN@
+REPLACE_POSIX_MEMALIGN = @REPLACE_POSIX_MEMALIGN@
+REPLACE_PREAD = @REPLACE_PREAD@
+REPLACE_PRINTF = @REPLACE_PRINTF@
+REPLACE_PSELECT = @REPLACE_PSELECT@
+REPLACE_PTHREAD_ATTR_DESTROY = @REPLACE_PTHREAD_ATTR_DESTROY@
+REPLACE_PTHREAD_ATTR_GETDETACHSTATE = @REPLACE_PTHREAD_ATTR_GETDETACHSTATE@
+REPLACE_PTHREAD_ATTR_INIT = @REPLACE_PTHREAD_ATTR_INIT@
+REPLACE_PTHREAD_ATTR_SETDETACHSTATE = @REPLACE_PTHREAD_ATTR_SETDETACHSTATE@
+REPLACE_PTHREAD_CONDATTR_DESTROY = @REPLACE_PTHREAD_CONDATTR_DESTROY@
+REPLACE_PTHREAD_CONDATTR_INIT = @REPLACE_PTHREAD_CONDATTR_INIT@
+REPLACE_PTHREAD_COND_BROADCAST = @REPLACE_PTHREAD_COND_BROADCAST@
+REPLACE_PTHREAD_COND_DESTROY = @REPLACE_PTHREAD_COND_DESTROY@
+REPLACE_PTHREAD_COND_INIT = @REPLACE_PTHREAD_COND_INIT@
+REPLACE_PTHREAD_COND_SIGNAL = @REPLACE_PTHREAD_COND_SIGNAL@
+REPLACE_PTHREAD_COND_TIMEDWAIT = @REPLACE_PTHREAD_COND_TIMEDWAIT@
+REPLACE_PTHREAD_COND_WAIT = @REPLACE_PTHREAD_COND_WAIT@
+REPLACE_PTHREAD_CREATE = @REPLACE_PTHREAD_CREATE@
+REPLACE_PTHREAD_DETACH = @REPLACE_PTHREAD_DETACH@
+REPLACE_PTHREAD_EQUAL = @REPLACE_PTHREAD_EQUAL@
+REPLACE_PTHREAD_EXIT = @REPLACE_PTHREAD_EXIT@
+REPLACE_PTHREAD_GETSPECIFIC = @REPLACE_PTHREAD_GETSPECIFIC@
+REPLACE_PTHREAD_JOIN = @REPLACE_PTHREAD_JOIN@
+REPLACE_PTHREAD_KEY_CREATE = @REPLACE_PTHREAD_KEY_CREATE@
+REPLACE_PTHREAD_KEY_DELETE = @REPLACE_PTHREAD_KEY_DELETE@
+REPLACE_PTHREAD_MUTEXATTR_DESTROY = @REPLACE_PTHREAD_MUTEXATTR_DESTROY@
+REPLACE_PTHREAD_MUTEXATTR_GETROBUST = @REPLACE_PTHREAD_MUTEXATTR_GETROBUST@
+REPLACE_PTHREAD_MUTEXATTR_GETTYPE = @REPLACE_PTHREAD_MUTEXATTR_GETTYPE@
+REPLACE_PTHREAD_MUTEXATTR_INIT = @REPLACE_PTHREAD_MUTEXATTR_INIT@
+REPLACE_PTHREAD_MUTEXATTR_SETROBUST = @REPLACE_PTHREAD_MUTEXATTR_SETROBUST@
+REPLACE_PTHREAD_MUTEXATTR_SETTYPE = @REPLACE_PTHREAD_MUTEXATTR_SETTYPE@
+REPLACE_PTHREAD_MUTEX_DESTROY = @REPLACE_PTHREAD_MUTEX_DESTROY@
+REPLACE_PTHREAD_MUTEX_INIT = @REPLACE_PTHREAD_MUTEX_INIT@
+REPLACE_PTHREAD_MUTEX_LOCK = @REPLACE_PTHREAD_MUTEX_LOCK@
+REPLACE_PTHREAD_MUTEX_TIMEDLOCK = @REPLACE_PTHREAD_MUTEX_TIMEDLOCK@
+REPLACE_PTHREAD_MUTEX_TRYLOCK = @REPLACE_PTHREAD_MUTEX_TRYLOCK@
+REPLACE_PTHREAD_MUTEX_UNLOCK = @REPLACE_PTHREAD_MUTEX_UNLOCK@
+REPLACE_PTHREAD_ONCE = @REPLACE_PTHREAD_ONCE@
+REPLACE_PTHREAD_RWLOCKATTR_DESTROY = @REPLACE_PTHREAD_RWLOCKATTR_DESTROY@
+REPLACE_PTHREAD_RWLOCKATTR_INIT = @REPLACE_PTHREAD_RWLOCKATTR_INIT@
+REPLACE_PTHREAD_RWLOCK_DESTROY = @REPLACE_PTHREAD_RWLOCK_DESTROY@
+REPLACE_PTHREAD_RWLOCK_INIT = @REPLACE_PTHREAD_RWLOCK_INIT@
+REPLACE_PTHREAD_RWLOCK_RDLOCK = @REPLACE_PTHREAD_RWLOCK_RDLOCK@
+REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK = @REPLACE_PTHREAD_RWLOCK_TIMEDRDLOCK@
+REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK = @REPLACE_PTHREAD_RWLOCK_TIMEDWRLOCK@
+REPLACE_PTHREAD_RWLOCK_TRYRDLOCK = @REPLACE_PTHREAD_RWLOCK_TRYRDLOCK@
+REPLACE_PTHREAD_RWLOCK_TRYWRLOCK = @REPLACE_PTHREAD_RWLOCK_TRYWRLOCK@
+REPLACE_PTHREAD_RWLOCK_UNLOCK = @REPLACE_PTHREAD_RWLOCK_UNLOCK@
+REPLACE_PTHREAD_RWLOCK_WRLOCK = @REPLACE_PTHREAD_RWLOCK_WRLOCK@
+REPLACE_PTHREAD_SELF = @REPLACE_PTHREAD_SELF@
+REPLACE_PTHREAD_SETSPECIFIC = @REPLACE_PTHREAD_SETSPECIFIC@
+REPLACE_PTHREAD_SIGMASK = @REPLACE_PTHREAD_SIGMASK@
+REPLACE_PTHREAD_SPIN_DESTROY = @REPLACE_PTHREAD_SPIN_DESTROY@
+REPLACE_PTHREAD_SPIN_INIT = @REPLACE_PTHREAD_SPIN_INIT@
+REPLACE_PTHREAD_SPIN_LOCK = @REPLACE_PTHREAD_SPIN_LOCK@
+REPLACE_PTHREAD_SPIN_TRYLOCK = @REPLACE_PTHREAD_SPIN_TRYLOCK@
+REPLACE_PTHREAD_SPIN_UNLOCK = @REPLACE_PTHREAD_SPIN_UNLOCK@
+REPLACE_PTSNAME = @REPLACE_PTSNAME@
+REPLACE_PTSNAME_R = @REPLACE_PTSNAME_R@
+REPLACE_PUTENV = @REPLACE_PUTENV@
+REPLACE_PWRITE = @REPLACE_PWRITE@
+REPLACE_QSORT_R = @REPLACE_QSORT_R@
+REPLACE_RAISE = @REPLACE_RAISE@
+REPLACE_RANDOM = @REPLACE_RANDOM@
+REPLACE_RANDOM_R = @REPLACE_RANDOM_R@
+REPLACE_READ = @REPLACE_READ@
+REPLACE_READLINK = @REPLACE_READLINK@
+REPLACE_READLINKAT = @REPLACE_READLINKAT@
+REPLACE_REALLOC = @REPLACE_REALLOC@
+REPLACE_REALLOCARRAY = @REPLACE_REALLOCARRAY@
+REPLACE_REALPATH = @REPLACE_REALPATH@
+REPLACE_REMOVE = @REPLACE_REMOVE@
+REPLACE_RENAME = @REPLACE_RENAME@
+REPLACE_RENAMEAT = @REPLACE_RENAMEAT@
+REPLACE_RMDIR = @REPLACE_RMDIR@
+REPLACE_SCHED_YIELD = @REPLACE_SCHED_YIELD@
+REPLACE_SELECT = @REPLACE_SELECT@
+REPLACE_SETENV = @REPLACE_SETENV@
+REPLACE_SETLOCALE = @REPLACE_SETLOCALE@
+REPLACE_SETSTATE = @REPLACE_SETSTATE@
+REPLACE_SLEEP = @REPLACE_SLEEP@
+REPLACE_SNPRINTF = @REPLACE_SNPRINTF@
+REPLACE_SPRINTF = @REPLACE_SPRINTF@
+REPLACE_STAT = @REPLACE_STAT@
+REPLACE_STDIO_READ_FUNCS = @REPLACE_STDIO_READ_FUNCS@
+REPLACE_STDIO_WRITE_FUNCS = @REPLACE_STDIO_WRITE_FUNCS@
+REPLACE_STPNCPY = @REPLACE_STPNCPY@
+REPLACE_STRCASESTR = @REPLACE_STRCASESTR@
+REPLACE_STRCHRNUL = @REPLACE_STRCHRNUL@
+REPLACE_STRDUP = @REPLACE_STRDUP@
+REPLACE_STRERROR = @REPLACE_STRERROR@
+REPLACE_STRERRORNAME_NP = @REPLACE_STRERRORNAME_NP@
+REPLACE_STRERROR_R = @REPLACE_STRERROR_R@
+REPLACE_STRFTIME = @REPLACE_STRFTIME@
+REPLACE_STRNCAT = @REPLACE_STRNCAT@
+REPLACE_STRNDUP = @REPLACE_STRNDUP@
+REPLACE_STRNLEN = @REPLACE_STRNLEN@
+REPLACE_STRSIGNAL = @REPLACE_STRSIGNAL@
+REPLACE_STRSTR = @REPLACE_STRSTR@
+REPLACE_STRTOD = @REPLACE_STRTOD@
+REPLACE_STRTOIMAX = @REPLACE_STRTOIMAX@
+REPLACE_STRTOK_R = @REPLACE_STRTOK_R@
+REPLACE_STRTOL = @REPLACE_STRTOL@
+REPLACE_STRTOLD = @REPLACE_STRTOLD@
+REPLACE_STRTOLL = @REPLACE_STRTOLL@
+REPLACE_STRTOUL = @REPLACE_STRTOUL@
+REPLACE_STRTOULL = @REPLACE_STRTOULL@
+REPLACE_STRTOUMAX = @REPLACE_STRTOUMAX@
+REPLACE_STRUCT_LCONV = @REPLACE_STRUCT_LCONV@
+REPLACE_STRUCT_TIMEVAL = @REPLACE_STRUCT_TIMEVAL@
+REPLACE_SYMLINK = @REPLACE_SYMLINK@
+REPLACE_SYMLINKAT = @REPLACE_SYMLINKAT@
+REPLACE_TIMEGM = @REPLACE_TIMEGM@
+REPLACE_TMPFILE = @REPLACE_TMPFILE@
+REPLACE_TOWLOWER = @REPLACE_TOWLOWER@
+REPLACE_TRUNCATE = @REPLACE_TRUNCATE@
+REPLACE_TTYNAME_R = @REPLACE_TTYNAME_R@
+REPLACE_TZSET = @REPLACE_TZSET@
+REPLACE_UNLINK = @REPLACE_UNLINK@
+REPLACE_UNLINKAT = @REPLACE_UNLINKAT@
+REPLACE_UNSETENV = @REPLACE_UNSETENV@
+REPLACE_USLEEP = @REPLACE_USLEEP@
+REPLACE_UTIMENSAT = @REPLACE_UTIMENSAT@
+REPLACE_VASPRINTF = @REPLACE_VASPRINTF@
+REPLACE_VDPRINTF = @REPLACE_VDPRINTF@
+REPLACE_VFPRINTF = @REPLACE_VFPRINTF@
+REPLACE_VPRINTF = @REPLACE_VPRINTF@
+REPLACE_VSNPRINTF = @REPLACE_VSNPRINTF@
+REPLACE_VSPRINTF = @REPLACE_VSPRINTF@
+REPLACE_WCRTOMB = @REPLACE_WCRTOMB@
+REPLACE_WCSFTIME = @REPLACE_WCSFTIME@
+REPLACE_WCSNRTOMBS = @REPLACE_WCSNRTOMBS@
+REPLACE_WCSRTOMBS = @REPLACE_WCSRTOMBS@
+REPLACE_WCSTOK = @REPLACE_WCSTOK@
+REPLACE_WCSWIDTH = @REPLACE_WCSWIDTH@
+REPLACE_WCTOB = @REPLACE_WCTOB@
+REPLACE_WCTOMB = @REPLACE_WCTOMB@
+REPLACE_WCWIDTH = @REPLACE_WCWIDTH@
+REPLACE_WRITE = @REPLACE_WRITE@
+SED = @SED@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+SIGSEGV_H = @SIGSEGV_H@
+SIG_ATOMIC_T_SUFFIX = @SIG_ATOMIC_T_SUFFIX@
+SIZE_T_SUFFIX = @SIZE_T_SUFFIX@
+STDALIGN_H = @STDALIGN_H@
+STDARG_H = @STDARG_H@
+STDBOOL_H = @STDBOOL_H@
+STDDEF_H = @STDDEF_H@
+STDINT_H = @STDINT_H@
+STRIP = @STRIP@
+SYS_IOCTL_H_HAVE_WINSOCK2_H = @SYS_IOCTL_H_HAVE_WINSOCK2_H@
+SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS = @SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+SYS_TIME_H_DEFINES_STRUCT_TIMESPEC = @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
+TIME_H_DEFINES_STRUCT_TIMESPEC = @TIME_H_DEFINES_STRUCT_TIMESPEC@
+TIME_H_DEFINES_TIME_UTC = @TIME_H_DEFINES_TIME_UTC@
+UINT32_MAX_LT_UINTMAX_MAX = @UINT32_MAX_LT_UINTMAX_MAX@
+UINT64_MAX_EQ_ULONG_MAX = @UINT64_MAX_EQ_ULONG_MAX@
+UNDEFINE_STRTOK_R = @UNDEFINE_STRTOK_R@
+UNISTD_H_DEFINES_STRUCT_TIMESPEC = @UNISTD_H_DEFINES_STRUCT_TIMESPEC@
+UNISTD_H_HAVE_SYS_RANDOM_H = @UNISTD_H_HAVE_SYS_RANDOM_H@
+UNISTD_H_HAVE_WINSOCK2_H = @UNISTD_H_HAVE_WINSOCK2_H@
+UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS = @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
+USE_NLS = @USE_NLS@
+VERSION = @VERSION@
+WARN_CFLAGS = @WARN_CFLAGS@
+WCHAR_T_SUFFIX = @WCHAR_T_SUFFIX@
+WERROR_CFLAGS = @WERROR_CFLAGS@
+WINDOWS_64_BIT_OFF_T = @WINDOWS_64_BIT_OFF_T@
+WINDOWS_64_BIT_ST_SIZE = @WINDOWS_64_BIT_ST_SIZE@
+WINDOWS_STAT_INODES = @WINDOWS_STAT_INODES@
+WINDOWS_STAT_TIMESPEC = @WINDOWS_STAT_TIMESPEC@
+WINT_T_SUFFIX = @WINT_T_SUFFIX@
+XGETTEXT = @XGETTEXT@
+XGETTEXT_015 = @XGETTEXT_015@
+XGETTEXT_EXTRA_OPTIONS = @XGETTEXT_EXTRA_OPTIONS@
+abs_aux_dir = @abs_aux_dir@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
+ac_ct_CC = @ac_ct_CC@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+builddir = @builddir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+gl_LIBOBJS = @gl_LIBOBJS@
+gl_LTLIBOBJS = @gl_LTLIBOBJS@
+gltests_LIBOBJS = @gltests_LIBOBJS@
+gltests_LTLIBOBJS = @gltests_LTLIBOBJS@
+gltests_WITNESS = @gltests_WITNESS@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libdir = @libdir@
+libexecdir = @libexecdir@
+lispdir = @lispdir@
+localedir = @localedir@
+localstatedir = @localstatedir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+runstatedir = @runstatedir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+TEST_EXTENSIONS = .sh .pl
+@HAVE_PERL_FALSE@TESTSUITE_PERL = $(SHELL) $(srcdir)/no-perl
+@HAVE_PERL_TRUE@TESTSUITE_PERL = $(PERL)
+
+# Options passed to the perl invocations running the perl test scripts.
+# '$f' is set by the Automake-generated test harness to the path of the
+# current test script stripped of VPATH components, and is used by the
+# CuTmpdir module to determine the name of the temporary files to be
+# used.  Note that $f is a shell variable, not a make macro, so the use
+# of '$$f' below is correct, and not a typo.
+TESTSUITE_PERL_OPTIONS = -w -I$(srcdir) -MCoreutils -MCuSkip \
+	-M"CuTmpdir qw($$f)"
+SH_LOG_COMPILER = $(SHELL)
+PL_LOG_COMPILER = $(TESTSUITE_PERL) $(TESTSUITE_PERL_OPTIONS)
+AM_CPPFLAGS = -I$(top_builddir)/lib -I$(top_srcdir)/lib \
+  -I$(top_srcdir)/src
+
+AM_CFLAGS = $(WARN_CFLAGS) $(WERROR_CFLAGS)
+
+# Tell the linker to omit references to unused shared libraries.
+AM_LDFLAGS = $(IGNORE_UNUSED_LIBRARIES_CFLAGS)
+LDADD = ../lib/libgreputils.a $(LIBINTL) ../lib/libgreputils.a
+
+# The triple-backref test is expected to fail with both the system
+# matcher (i.e., with glibc) and with the included matcher.
+# Both matchers need to be fixed.
+# FIXME-2015: Remove this once the glibc and gnulib bugs are fixed.
+XFAIL_TESTS = triple-backref $(am__append_1)
+# The backref-alt test fails for glibc 2.27 and earlier.
+# If you're using older glibc you can upgrade to glibc 2.28 or later,
+# configure --with-included-regex, or ignore the test failure.
+TESTS = \
+  backref					\
+  backref-alt					\
+  backref-multibyte-slow			\
+  backref-word					\
+  backslash-dot					\
+  backslash-s-and-repetition-operators		\
+  backslash-s-vs-invalid-multibyte		\
+  big-hole					\
+  big-match					\
+  binary-file-matches				\
+  bogus-wctob					\
+  bre						\
+  c-locale					\
+  case-fold-backref				\
+  case-fold-backslash-w				\
+  case-fold-char-class				\
+  case-fold-char-range				\
+  case-fold-char-type				\
+  case-fold-titlecase				\
+  char-class-multibyte				\
+  char-class-multibyte2				\
+  context-0					\
+  count-newline					\
+  dfa-coverage					\
+  dfa-heap-overrun				\
+  dfa-infloop					\
+  dfa-invalid-utf8				\
+  dfaexec-multibyte				\
+  empty						\
+  empty-line					\
+  empty-line-mb					\
+  encoding-error				\
+  epipe						\
+  equiv-classes					\
+  ere						\
+  euc-mb					\
+  false-match-mb-non-utf8			\
+  fedora					\
+  fgrep-infloop					\
+  fgrep-longest					\
+  file						\
+  filename-lineno.pl				\
+  fmbtest					\
+  foad1						\
+  grep-dev-null					\
+  grep-dev-null-out				\
+  grep-dir					\
+  hash-collision-perf				\
+  help-version					\
+  high-bit-range				\
+  in-eq-out-infloop				\
+  include-exclude				\
+  inconsistent-range				\
+  initial-tab					\
+  invalid-multibyte-infloop			\
+  khadafy					\
+  kwset-abuse					\
+  long-line-vs-2GiB-read			\
+  long-pattern-perf				\
+  many-regex-performance			\
+  match-lines					\
+  max-count-overread				\
+  max-count-vs-context				\
+  mb-dot-newline				\
+  mb-non-UTF8-overrun				\
+  mb-non-UTF8-perf-Fw				\
+  mb-non-UTF8-performance			\
+  mb-non-UTF8-word-boundary			\
+  multibyte-white-space				\
+  multiple-begin-or-end-line			\
+  null-byte					\
+  options					\
+  pcre						\
+  pcre-abort					\
+  pcre-context					\
+  pcre-count					\
+  pcre-infloop					\
+  pcre-invalid-utf8-infloop			\
+  pcre-invalid-utf8-input			\
+  pcre-jitstack					\
+  pcre-o					\
+  pcre-utf8					\
+  pcre-w					\
+  pcre-wx-backref				\
+  pcre-z					\
+  posix-bracket					\
+  prefix-of-multibyte				\
+  proc						\
+  r-dot						\
+  repetition-overflow				\
+  reversed-range-endpoints			\
+  sjis-mb					\
+  skip-device					\
+  skip-read					\
+  spencer1					\
+  spencer1-locale				\
+  stack-overflow				\
+  status					\
+  surrogate-pair				\
+  symlink					\
+  triple-backref				\
+  turkish-I					\
+  turkish-I-without-dot				\
+  turkish-eyes					\
+  two-chars					\
+  two-files					\
+  unibyte-binary				\
+  unibyte-bracket-expr				\
+  unibyte-negated-circumflex			\
+  utf8-bracket					\
+  warn-char-classes				\
+  word-delim-multibyte				\
+  word-multi-file				\
+  word-multibyte				\
+  write-error-msg				\
+  yesno						\
+  z-anchor-newline
+
+EXTRA_DIST = \
+  $(TESTS)					\
+  bre.awk					\
+  bre.tests					\
+  Coreutils.pm					\
+  CuSkip.pm					\
+  CuTmpdir.pm					\
+  envvar-check					\
+  ere.awk					\
+  ere.tests					\
+  init.cfg					\
+  init.sh					\
+  khadafy.lines					\
+  khadafy.regexp				\
+  no-perl					\
+  spencer1.awk					\
+  spencer1.tests				\
+  spencer1-locale.awk
+
+
+# Default to a nonzero value.  Environment overrides.
+# https://udrepper.livejournal.com/11429.html
+MALLOC_PERTURB_ = 1
+TESTS_ENVIRONMENT = \
+  tmp__=$${TMPDIR-/tmp};			\
+  test -d "$$tmp__" && test -w "$$tmp__" || tmp__=.;	\
+  . $(srcdir)/envvar-check;			\
+  TMPDIR=$$tmp__; export TMPDIR;		\
+						\
+  if test -n "$$BASH_VERSION" || (eval "export v=x") 2>/dev/null; then \
+    export_with_values () { export "$$@"; };		\
+  else							\
+    export_with_values ()				\
+    {							\
+      sed_extract_var='s/=.*//';			\
+      sed_quote_value="s/'/'\\\\''/g;s/=\\(.*\\)/='\\1'/";\
+      for arg in "$$@"; do				\
+        var=`echo "$$arg" | sed "$$sed_extract_var"`;	\
+        arg=`echo "$$arg" | sed "$$sed_quote_value"`;	\
+        eval "$$arg";					\
+        export "$$var";					\
+      done;						\
+    };							\
+  fi;							\
+							\
+  : 'Test egrep/fgrep help if they use our grep.';	\
+  grep=`echo grep | sed -e '$(transform)'` || exit;	\
+  if test "$$grep" = grep; then				\
+    built_programs='grep egrep fgrep';			\
+  else							\
+    built_programs='grep';				\
+  fi;							\
+						\
+  export_with_values				\
+  VERSION='$(VERSION)'				\
+  LOCALE_FR='$(LOCALE_FR)'			\
+  LOCALE_FR_UTF8='$(LOCALE_FR_UTF8)'		\
+  AWK=$(AWK)					\
+  LC_ALL=C					\
+  abs_top_builddir='$(abs_top_builddir)'	\
+  abs_top_srcdir='$(abs_top_srcdir)'		\
+  abs_srcdir='$(abs_srcdir)'			\
+  built_programs="$$built_programs"		\
+  host_triplet='$(host_triplet)'		\
+  srcdir='$(srcdir)'				\
+  top_srcdir='$(top_srcdir)'			\
+  CC='$(CC)'					\
+  GREP_TEST_NAME=`echo $$tst|sed 's,^\./,,;s,/,-,g'` \
+  MAKE=$(MAKE)					\
+  MALLOC_PERTURB_=$(MALLOC_PERTURB_)		\
+  PACKAGE_BUGREPORT='$(PACKAGE_BUGREPORT)'	\
+  PACKAGE_VERSION=$(PACKAGE_VERSION)		\
+  PERL='$(PERL)'				\
+  SHELL='$(SHELL)'				\
+  PATH='$(abs_top_builddir)/src$(PATH_SEPARATOR)'"$$PATH" \
+  ;						\
+						\
+  : 'set this envvar to indicate whether -P works';	\
+  m=0; if err=`echo .|grep -Pq . 2>&1`; then		\
+    test -z "$$err" && m=1; fi;				\
+  export PCRE_WORKS=$$m;				\
+  9>&2
+
+LOG_COMPILER = $(SHELL)
+VERBOSE = yes
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .log .o .obj .pl .pl$(EXEEXT) .sh .sh$(EXEEXT) .trs
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu tests/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu tests/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+clean-checkPROGRAMS:
+	-test -z "$(check_PROGRAMS)" || rm -f $(check_PROGRAMS)
+
+get-mb-cur-max$(EXEEXT): $(get_mb_cur_max_OBJECTS) $(get_mb_cur_max_DEPENDENCIES) $(EXTRA_get_mb_cur_max_DEPENDENCIES) 
+	@rm -f get-mb-cur-max$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(get_mb_cur_max_OBJECTS) $(get_mb_cur_max_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/get-mb-cur-max.Po@am__quote@ # am--include-marker
+
+$(am__depfiles_remade):
+	@$(MKDIR_P) $(@D)
+	@echo '# dummy' >$@-t && $(am__mv) $@-t $@
+
+am--depfiles: $(am__depfiles_remade)
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+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ `$(CYGPATH_W) '$<'` &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
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+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
+tags: tags-am
+TAGS: tags
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+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	set x; \
+	here=`pwd`; \
+	$(am__define_uniq_tagged_files); \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: ctags-am
+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+# Recover from deleted '.trs' file; this should ensure that
+# "rm -f foo.log; make foo.trs" re-run 'foo.test', and re-create
+# both 'foo.log' and 'foo.trs'.  Break the recipe in two subshells
+# to avoid problems with "make -n".
+.log.trs:
+	rm -f $< $@
+	$(MAKE) $(AM_MAKEFLAGS) $<
+
+# Leading 'am--fnord' is there to ensure the list of targets does not
+# expand to empty, as could happen e.g. with make check TESTS=''.
+am--fnord $(TEST_LOGS) $(TEST_LOGS:.log=.trs): $(am__force_recheck)
+am--force-recheck:
+	@:
+
+$(TEST_SUITE_LOG): $(TEST_LOGS)
+	@$(am__set_TESTS_bases); \
+	am__f_ok () { test -f "$$1" && test -r "$$1"; }; \
+	redo_bases=`for i in $$bases; do \
+	              am__f_ok $$i.trs && am__f_ok $$i.log || echo $$i; \
+	            done`; \
+	if test -n "$$redo_bases"; then \
+	  redo_logs=`for i in $$redo_bases; do echo $$i.log; done`; \
+	  redo_results=`for i in $$redo_bases; do echo $$i.trs; done`; \
+	  if $(am__make_dryrun); then :; else \
+	    rm -f $$redo_logs && rm -f $$redo_results || exit 1; \
+	  fi; \
+	fi; \
+	if test -n "$$am__remaking_logs"; then \
+	  echo "fatal: making $(TEST_SUITE_LOG): possible infinite" \
+	       "recursion detected" >&2; \
+	elif test -n "$$redo_logs"; then \
+	  am__remaking_logs=yes $(MAKE) $(AM_MAKEFLAGS) $$redo_logs; \
+	fi; \
+	if $(am__make_dryrun); then :; else \
+	  st=0;  \
+	  errmsg="fatal: making $(TEST_SUITE_LOG): failed to create"; \
+	  for i in $$redo_bases; do \
+	    test -f $$i.trs && test -r $$i.trs \
+	      || { echo "$$errmsg $$i.trs" >&2; st=1; }; \
+	    test -f $$i.log && test -r $$i.log \
+	      || { echo "$$errmsg $$i.log" >&2; st=1; }; \
+	  done; \
+	  test $$st -eq 0 || exit 1; \
+	fi
+	@$(am__sh_e_setup); $(am__tty_colors); $(am__set_TESTS_bases); \
+	ws='[ 	]'; \
+	results=`for b in $$bases; do echo $$b.trs; done`; \
+	test -n "$$results" || results=/dev/null; \
+	all=`  grep "^$$ws*:test-result:"           $$results | wc -l`; \
+	pass=` grep "^$$ws*:test-result:$$ws*PASS"  $$results | wc -l`; \
+	fail=` grep "^$$ws*:test-result:$$ws*FAIL"  $$results | wc -l`; \
+	skip=` grep "^$$ws*:test-result:$$ws*SKIP"  $$results | wc -l`; \
+	xfail=`grep "^$$ws*:test-result:$$ws*XFAIL" $$results | wc -l`; \
+	xpass=`grep "^$$ws*:test-result:$$ws*XPASS" $$results | wc -l`; \
+	error=`grep "^$$ws*:test-result:$$ws*ERROR" $$results | wc -l`; \
+	if test `expr $$fail + $$xpass + $$error` -eq 0; then \
+	  success=true; \
+	else \
+	  success=false; \
+	fi; \
+	br='==================='; br=$$br$$br$$br$$br; \
+	result_count () \
+	{ \
+	    if test x"$$1" = x"--maybe-color"; then \
+	      maybe_colorize=yes; \
+	    elif test x"$$1" = x"--no-color"; then \
+	      maybe_colorize=no; \
+	    else \
+	      echo "$@: invalid 'result_count' usage" >&2; exit 4; \
+	    fi; \
+	    shift; \
+	    desc=$$1 count=$$2; \
+	    if test $$maybe_colorize = yes && test $$count -gt 0; then \
+	      color_start=$$3 color_end=$$std; \
+	    else \
+	      color_start= color_end=; \
+	    fi; \
+	    echo "$${color_start}# $$desc $$count$${color_end}"; \
+	}; \
+	create_testsuite_report () \
+	{ \
+	  result_count $$1 "TOTAL:" $$all   "$$brg"; \
+	  result_count $$1 "PASS: " $$pass  "$$grn"; \
+	  result_count $$1 "SKIP: " $$skip  "$$blu"; \
+	  result_count $$1 "XFAIL:" $$xfail "$$lgn"; \
+	  result_count $$1 "FAIL: " $$fail  "$$red"; \
+	  result_count $$1 "XPASS:" $$xpass "$$red"; \
+	  result_count $$1 "ERROR:" $$error "$$mgn"; \
+	}; \
+	{								\
+	  echo "$(PACKAGE_STRING): $(subdir)/$(TEST_SUITE_LOG)" |	\
+	    $(am__rst_title);						\
+	  create_testsuite_report --no-color;				\
+	  echo;								\
+	  echo ".. contents:: :depth: 2";				\
+	  echo;								\
+	  for b in $$bases; do echo $$b; done				\
+	    | $(am__create_global_log);					\
+	} >$(TEST_SUITE_LOG).tmp || exit 1;				\
+	mv $(TEST_SUITE_LOG).tmp $(TEST_SUITE_LOG);			\
+	if $$success; then						\
+	  col="$$grn";							\
+	 else								\
+	  col="$$red";							\
+	  test x"$$VERBOSE" = x || cat $(TEST_SUITE_LOG);		\
+	fi;								\
+	echo "$${col}$$br$${std}"; 					\
+	echo "$${col}Testsuite summary"$(AM_TESTSUITE_SUMMARY_HEADER)"$${std}";	\
+	echo "$${col}$$br$${std}"; 					\
+	create_testsuite_report --maybe-color;				\
+	echo "$$col$$br$$std";						\
+	if $$success; then :; else					\
+	  echo "$${col}See $(subdir)/$(TEST_SUITE_LOG)$${std}";		\
+	  if test -n "$(PACKAGE_BUGREPORT)"; then			\
+	    echo "$${col}Please report to $(PACKAGE_BUGREPORT)$${std}";	\
+	  fi;								\
+	  echo "$$col$$br$$std";					\
+	fi;								\
+	$$success || exit 1
+
+check-TESTS: $(check_PROGRAMS)
+	@list='$(RECHECK_LOGS)';           test -z "$$list" || rm -f $$list
+	@list='$(RECHECK_LOGS:.log=.trs)'; test -z "$$list" || rm -f $$list
+	@test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+	@set +e; $(am__set_TESTS_bases); \
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+	log_list=`echo $$log_list`; trs_list=`echo $$trs_list`; \
+	$(MAKE) $(AM_MAKEFLAGS) $(TEST_SUITE_LOG) TEST_LOGS="$$log_list"; \
+	exit $$?;
+recheck: all $(check_PROGRAMS)
+	@test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+	@set +e; $(am__set_TESTS_bases); \
+	bases=`for i in $$bases; do echo $$i; done \
+	         | $(am__list_recheck_tests)` || exit 1; \
+	log_list=`for i in $$bases; do echo $$i.log; done`; \
+	log_list=`echo $$log_list`; \
+	$(MAKE) $(AM_MAKEFLAGS) $(TEST_SUITE_LOG) \
+	        am__force_recheck=am--force-recheck \
+	        TEST_LOGS="$$log_list"; \
+	exit $$?
+backref.log: backref
+	@p='backref'; \
+	b='backref'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	b='backref-multibyte-slow'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='backref-word'; \
+	b='backref-word'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='backslash-dot'; \
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+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='backslash-s-and-repetition-operators'; \
+	b='backslash-s-and-repetition-operators'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+backslash-s-vs-invalid-multibyte.log: backslash-s-vs-invalid-multibyte
+	@p='backslash-s-vs-invalid-multibyte'; \
+	b='backslash-s-vs-invalid-multibyte'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='big-hole'; \
+	b='big-hole'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
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+	@p='big-match'; \
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+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	b='binary-file-matches'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+bogus-wctob.log: bogus-wctob
+	@p='bogus-wctob'; \
+	b='bogus-wctob'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+bre.log: bre
+	@p='bre'; \
+	b='bre'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+c-locale.log: c-locale
+	@p='c-locale'; \
+	b='c-locale'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+case-fold-backref.log: case-fold-backref
+	@p='case-fold-backref'; \
+	b='case-fold-backref'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+case-fold-backslash-w.log: case-fold-backslash-w
+	@p='case-fold-backslash-w'; \
+	b='case-fold-backslash-w'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+case-fold-char-class.log: case-fold-char-class
+	@p='case-fold-char-class'; \
+	b='case-fold-char-class'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+case-fold-char-range.log: case-fold-char-range
+	@p='case-fold-char-range'; \
+	b='case-fold-char-range'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+case-fold-char-type.log: case-fold-char-type
+	@p='case-fold-char-type'; \
+	b='case-fold-char-type'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+case-fold-titlecase.log: case-fold-titlecase
+	@p='case-fold-titlecase'; \
+	b='case-fold-titlecase'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+char-class-multibyte.log: char-class-multibyte
+	@p='char-class-multibyte'; \
+	b='char-class-multibyte'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+char-class-multibyte2.log: char-class-multibyte2
+	@p='char-class-multibyte2'; \
+	b='char-class-multibyte2'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+context-0.log: context-0
+	@p='context-0'; \
+	b='context-0'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+count-newline.log: count-newline
+	@p='count-newline'; \
+	b='count-newline'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+dfa-coverage.log: dfa-coverage
+	@p='dfa-coverage'; \
+	b='dfa-coverage'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+dfa-heap-overrun.log: dfa-heap-overrun
+	@p='dfa-heap-overrun'; \
+	b='dfa-heap-overrun'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+dfa-infloop.log: dfa-infloop
+	@p='dfa-infloop'; \
+	b='dfa-infloop'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+dfa-invalid-utf8.log: dfa-invalid-utf8
+	@p='dfa-invalid-utf8'; \
+	b='dfa-invalid-utf8'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+dfaexec-multibyte.log: dfaexec-multibyte
+	@p='dfaexec-multibyte'; \
+	b='dfaexec-multibyte'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+empty.log: empty
+	@p='empty'; \
+	b='empty'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+empty-line.log: empty-line
+	@p='empty-line'; \
+	b='empty-line'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+empty-line-mb.log: empty-line-mb
+	@p='empty-line-mb'; \
+	b='empty-line-mb'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+encoding-error.log: encoding-error
+	@p='encoding-error'; \
+	b='encoding-error'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+epipe.log: epipe
+	@p='epipe'; \
+	b='epipe'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+equiv-classes.log: equiv-classes
+	@p='equiv-classes'; \
+	b='equiv-classes'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+ere.log: ere
+	@p='ere'; \
+	b='ere'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+euc-mb.log: euc-mb
+	@p='euc-mb'; \
+	b='euc-mb'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+false-match-mb-non-utf8.log: false-match-mb-non-utf8
+	@p='false-match-mb-non-utf8'; \
+	b='false-match-mb-non-utf8'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+fedora.log: fedora
+	@p='fedora'; \
+	b='fedora'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+fgrep-infloop.log: fgrep-infloop
+	@p='fgrep-infloop'; \
+	b='fgrep-infloop'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+fgrep-longest.log: fgrep-longest
+	@p='fgrep-longest'; \
+	b='fgrep-longest'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+file.log: file
+	@p='file'; \
+	b='file'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+fmbtest.log: fmbtest
+	@p='fmbtest'; \
+	b='fmbtest'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+foad1.log: foad1
+	@p='foad1'; \
+	b='foad1'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+grep-dev-null.log: grep-dev-null
+	@p='grep-dev-null'; \
+	b='grep-dev-null'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+grep-dev-null-out.log: grep-dev-null-out
+	@p='grep-dev-null-out'; \
+	b='grep-dev-null-out'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+grep-dir.log: grep-dir
+	@p='grep-dir'; \
+	b='grep-dir'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+hash-collision-perf.log: hash-collision-perf
+	@p='hash-collision-perf'; \
+	b='hash-collision-perf'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+help-version.log: help-version
+	@p='help-version'; \
+	b='help-version'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+high-bit-range.log: high-bit-range
+	@p='high-bit-range'; \
+	b='high-bit-range'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+in-eq-out-infloop.log: in-eq-out-infloop
+	@p='in-eq-out-infloop'; \
+	b='in-eq-out-infloop'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+include-exclude.log: include-exclude
+	@p='include-exclude'; \
+	b='include-exclude'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+inconsistent-range.log: inconsistent-range
+	@p='inconsistent-range'; \
+	b='inconsistent-range'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+initial-tab.log: initial-tab
+	@p='initial-tab'; \
+	b='initial-tab'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+invalid-multibyte-infloop.log: invalid-multibyte-infloop
+	@p='invalid-multibyte-infloop'; \
+	b='invalid-multibyte-infloop'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+khadafy.log: khadafy
+	@p='khadafy'; \
+	b='khadafy'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+kwset-abuse.log: kwset-abuse
+	@p='kwset-abuse'; \
+	b='kwset-abuse'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+long-line-vs-2GiB-read.log: long-line-vs-2GiB-read
+	@p='long-line-vs-2GiB-read'; \
+	b='long-line-vs-2GiB-read'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+long-pattern-perf.log: long-pattern-perf
+	@p='long-pattern-perf'; \
+	b='long-pattern-perf'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+many-regex-performance.log: many-regex-performance
+	@p='many-regex-performance'; \
+	b='many-regex-performance'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+match-lines.log: match-lines
+	@p='match-lines'; \
+	b='match-lines'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+max-count-overread.log: max-count-overread
+	@p='max-count-overread'; \
+	b='max-count-overread'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+max-count-vs-context.log: max-count-vs-context
+	@p='max-count-vs-context'; \
+	b='max-count-vs-context'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+mb-dot-newline.log: mb-dot-newline
+	@p='mb-dot-newline'; \
+	b='mb-dot-newline'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+mb-non-UTF8-overrun.log: mb-non-UTF8-overrun
+	@p='mb-non-UTF8-overrun'; \
+	b='mb-non-UTF8-overrun'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+mb-non-UTF8-perf-Fw.log: mb-non-UTF8-perf-Fw
+	@p='mb-non-UTF8-perf-Fw'; \
+	b='mb-non-UTF8-perf-Fw'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+mb-non-UTF8-performance.log: mb-non-UTF8-performance
+	@p='mb-non-UTF8-performance'; \
+	b='mb-non-UTF8-performance'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+mb-non-UTF8-word-boundary.log: mb-non-UTF8-word-boundary
+	@p='mb-non-UTF8-word-boundary'; \
+	b='mb-non-UTF8-word-boundary'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+multibyte-white-space.log: multibyte-white-space
+	@p='multibyte-white-space'; \
+	b='multibyte-white-space'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+multiple-begin-or-end-line.log: multiple-begin-or-end-line
+	@p='multiple-begin-or-end-line'; \
+	b='multiple-begin-or-end-line'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+null-byte.log: null-byte
+	@p='null-byte'; \
+	b='null-byte'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+options.log: options
+	@p='options'; \
+	b='options'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	b='pcre'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='pcre-abort'; \
+	b='pcre-abort'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='pcre-context'; \
+	b='pcre-context'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	b='pcre-count'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='pcre-infloop'; \
+	b='pcre-infloop'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='pcre-invalid-utf8-infloop'; \
+	b='pcre-invalid-utf8-infloop'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='pcre-invalid-utf8-input'; \
+	b='pcre-invalid-utf8-input'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	@p='pcre-jitstack'; \
+	b='pcre-jitstack'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='pcre-o'; \
+	b='pcre-o'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	@p='pcre-utf8'; \
+	b='pcre-utf8'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
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+	b='pcre-w'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='pcre-wx-backref'; \
+	b='pcre-wx-backref'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
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+	@p='pcre-z'; \
+	b='pcre-z'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
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+	@p='posix-bracket'; \
+	b='posix-bracket'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
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+	@p='prefix-of-multibyte'; \
+	b='prefix-of-multibyte'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
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+	@p='proc'; \
+	b='proc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+r-dot.log: r-dot
+	@p='r-dot'; \
+	b='r-dot'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	@p='repetition-overflow'; \
+	b='repetition-overflow'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
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+	@p='reversed-range-endpoints'; \
+	b='reversed-range-endpoints'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='sjis-mb'; \
+	b='sjis-mb'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	b='skip-device'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	b='skip-read'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
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+	@p='spencer1'; \
+	b='spencer1'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+spencer1-locale.log: spencer1-locale
+	@p='spencer1-locale'; \
+	b='spencer1-locale'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='stack-overflow'; \
+	b='stack-overflow'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	@p='status'; \
+	b='status'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='surrogate-pair'; \
+	b='surrogate-pair'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='symlink'; \
+	b='symlink'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='triple-backref'; \
+	b='triple-backref'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='turkish-I'; \
+	b='turkish-I'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+turkish-I-without-dot.log: turkish-I-without-dot
+	@p='turkish-I-without-dot'; \
+	b='turkish-I-without-dot'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+turkish-eyes.log: turkish-eyes
+	@p='turkish-eyes'; \
+	b='turkish-eyes'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='two-chars'; \
+	b='two-chars'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='two-files'; \
+	b='two-files'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='unibyte-binary'; \
+	b='unibyte-binary'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+unibyte-bracket-expr.log: unibyte-bracket-expr
+	@p='unibyte-bracket-expr'; \
+	b='unibyte-bracket-expr'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+unibyte-negated-circumflex.log: unibyte-negated-circumflex
+	@p='unibyte-negated-circumflex'; \
+	b='unibyte-negated-circumflex'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+utf8-bracket.log: utf8-bracket
+	@p='utf8-bracket'; \
+	b='utf8-bracket'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+warn-char-classes.log: warn-char-classes
+	@p='warn-char-classes'; \
+	b='warn-char-classes'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='word-delim-multibyte'; \
+	b='word-delim-multibyte'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='word-multi-file'; \
+	b='word-multi-file'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='word-multibyte'; \
+	b='word-multibyte'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	@p='write-error-msg'; \
+	b='write-error-msg'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
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+	@p='yesno'; \
+	b='yesno'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
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+	@p='z-anchor-newline'; \
+	b='z-anchor-newline'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
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+	$(am__common_driver_flags) $(AM_PL_LOG_DRIVER_FLAGS) $(PL_LOG_DRIVER_FLAGS) -- $(PL_LOG_COMPILE) \
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+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
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+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
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+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
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+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
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+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+	$(MAKE) $(AM_MAKEFLAGS) $(check_PROGRAMS)
+	$(MAKE) $(AM_MAKEFLAGS) check-TESTS
+check: check-am
+all-am: Makefile
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+	-test -z "$(TEST_LOGS)" || rm -f $(TEST_LOGS)
+	-test -z "$(TEST_LOGS:.log=.trs)" || rm -f $(TEST_LOGS:.log=.trs)
+	-test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-checkPROGRAMS clean-generic mostlyclean-am
+
+distclean: distclean-am
+		-rm -f ./$(DEPDIR)/get-mb-cur-max.Po
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+		-rm -f ./$(DEPDIR)/get-mb-cur-max.Po
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: check-am install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-TESTS \
+	check-am clean clean-checkPROGRAMS clean-generic cscopelist-am \
+	ctags ctags-am distclean distclean-compile distclean-generic \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic pdf pdf-am ps ps-am \
+	recheck tags tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+check: check_executable_TESTS
+.PHONY: check_executable_TESTS
+check_executable_TESTS: Makefile
+	$(AM_V_GEN)fail=0;						\
+        cd $(srcdir) && for i in $(TESTS); do				\
+	  test -x $$i || { fail=1; echo $$i >&2; };			\
+	done;								\
+	test $$fail = 1							\
+          && { echo the above test scripts are not executable >&2; exit 1; } \
+          || :
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/grep/tests/backref b/src/grep/tests/backref
new file mode 100755
index 0000000..947981b
--- /dev/null
+++ b/src/grep/tests/backref
@@ -0,0 +1,46 @@
+#! /bin/sh
+# Test for back-references and other things.
+#
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+failures=0
+
+# checking for a palindrome
+echo "radar" | grep -e '\(.\)\(.\).\2\1' > /dev/null 2>&1
+if test $? -ne 0 ; then
+        echo "Backref: palindrome, test #1 failed"
+        failures=1
+fi
+
+# hit hard with the 'Bond' tests
+# For now, remove the '?' in the last parentheses, so that new glibc can do it.
+# --Stepan
+echo "civic" \
+  | grep -E -e '^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.).?\9\8\7\6\5\4\3\2\1$' \
+         > /dev/null 2>&1
+if test $? -ne 0 ; then
+        echo "Options: Bond, test #2 failed"
+        failures=1
+fi
+
+# backref are local should be error
+echo "123" | grep -e 'a\(.\)' -e 'b\1' > /dev/null 2>&1
+if test $? -ne 2 ; then
+        echo "Backref: Backref not local, test #3 failed"
+        failures=1
+fi
+
+# Pattern should fail
+echo "123" | grep -e '[' -e ']' > /dev/null 2>&1
+if test $? -ne 2 ; then
+        echo "Backref: Compiled not local, test #4 failed"
+        failures=1
+fi
+
+Exit $failures
diff --git a/src/grep/tests/backref-alt b/src/grep/tests/backref-alt
new file mode 100755
index 0000000..986621b
--- /dev/null
+++ b/src/grep/tests/backref-alt
@@ -0,0 +1,34 @@
+#! /bin/sh
+# Test for a bug in glibc's regex code as of 2015-09-19.
+#
+# Copyright 2015-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+echo aa > in || framework_failure_
+
+fail=0
+
+grep -E 'b|(.)b|\1|b' in >out
+status=$?
+# POSIX isn't clear whether this regular expression should be invalid,
+# (because the \1 is out of range for REs that could precede it)
+# or valid but \1 should not match.  Allow either interpretation.
+test $status -eq 2 || test $status -eq 1 || fail=1
+
+grep -E '0|()0|\1|0' in >out
+status=$?
+test $status -eq 2 || test $status -eq 1 || fail=1
+
+# This test is a reduced version of the one in Bug#27838.
+# It triggers this glibc assertion failure:
+# grep: regexec.c:1342: pop_fail_stack: Assertion `num >= 0' failed.
+LC_ALL=C grep -E '(()x)|\2' in > out
+status=$?
+test $status -eq 2 || test $status -eq 1 || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/backref-multibyte-slow b/src/grep/tests/backref-multibyte-slow
new file mode 100755
index 0000000..9c4fe06
--- /dev/null
+++ b/src/grep/tests/backref-multibyte-slow
@@ -0,0 +1,33 @@
+#!/bin/sh
+# This was approximately quadratic up to grep-2.6.3
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+require_timeout_
+
+fail=0
+
+# Create a 13000-line input
+$AWK 'BEGIN {for (i=0; i<13000; i++) print "aba"}' /dev/null > in || fail=1
+
+# Use 10 times the duration of running grep in the C locale as the timeout
+# when running in en_US.UTF-8.  Round up to whole seconds, since timeout
+# can't deal with fractional seconds.
+max_seconds=$(LC_ALL=C perl -le 'use Time::HiRes qw(time); my $s = time();
+              system q,grep -E '\''^([a-z]).\1$'\'' in > junk,;
+              my $elapsed = time() - $s; print int (1 + 10 * $elapsed)') \
+  || { max_seconds=5;
+       warn_ "$ME_: warning: no perl? using default of 5s timeout"; }
+
+# If the above finished so quickly that we'd have a 1-second timeout,
+# increase it to a duration less likely to arise in a parallel test run.
+test $max_seconds = 1 && max_seconds=5
+
+for LOC in en_US.UTF-8; do
+  out=out-$LOC
+  LC_ALL=$LOC timeout ${max_seconds}s grep -aE '^([a-z]).\1$' in > $out 2>&1 \
+    || fail=1
+  compare $out in || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/backref-word b/src/grep/tests/backref-word
new file mode 100755
index 0000000..e5b5486
--- /dev/null
+++ b/src/grep/tests/backref-word
@@ -0,0 +1,18 @@
+#!/bin/sh
+# This would fail for grep-2.6
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+printf 'foo foo bar\n'      > exp1 || framework_failure_
+fail=0
+
+for LOC in en_US.UTF-8 zh_CN $LOCALE_FR_UTF8; do
+  out=out1-$LOC
+  LC_ALL=$LOC grep -w '\(foo\) \1' exp1 > $out || fail=1
+  compare exp1 $out || fail=1
+
+  LC_ALL=$LOC grep -wx '\(foo\) \1' exp1 > $out
+  test $? -eq 1 || fail=1
+  compare /dev/null $out || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/backslash-dot b/src/grep/tests/backslash-dot
new file mode 100755
index 0000000..b4dd567
--- /dev/null
+++ b/src/grep/tests/backslash-dot
@@ -0,0 +1,20 @@
+#! /bin/sh
+# This once failed to match: echo . | grep '\.'
+#
+# Copyright (C) 2020-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+echo . > in || framework_failure_
+
+grep '\.' in > out 2> err || fail=1
+compare in out || fail=1
+compare /dev/null err || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/backslash-s-and-repetition-operators b/src/grep/tests/backslash-s-and-repetition-operators
new file mode 100755
index 0000000..8acb60a
--- /dev/null
+++ b/src/grep/tests/backslash-s-and-repetition-operators
@@ -0,0 +1,36 @@
+#! /bin/sh
+# Ensure that \s and \S work with repetition operators.
+#
+# Copyright (C) 2013-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+
+fail=0
+
+for loc in en_US.UTF-8 C; do
+  echo locale=$loc
+  LC_ALL=$loc
+  export LC_ALL
+
+  printf ' \n' > in || framework_failure_
+
+  for re in '\s\+' '\s*' '\s\?' '\s\{1\}'; do
+    grep "^$re\$" in > out || fail=1
+    compare in out || fail=1
+  done
+
+  printf 'X\n' > in || framework_failure_
+
+  for re in '\S\+' '\S*' '\S\?' '\S\{1\}'; do
+    grep "^$re\$" in > out || fail=1
+    compare in out || fail=1
+  done
+done
+
+Exit $fail
diff --git a/src/grep/tests/backslash-s-vs-invalid-multibyte b/src/grep/tests/backslash-s-vs-invalid-multibyte
new file mode 100755
index 0000000..79d5733
--- /dev/null
+++ b/src/grep/tests/backslash-s-vs-invalid-multibyte
@@ -0,0 +1,26 @@
+#! /bin/sh
+# Ensure that neither \s nor \S matches an invalid multibyte character.
+#
+# Copyright (C) 2013-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+
+printf '\202\n' > in || framework_failure_
+
+LC_ALL=en_US.UTF-8
+export LC_ALL
+
+fail=0
+grep '^\S$' in > out-S && fail=1
+compare /dev/null out-S || fail=1
+
+grep '^\s$' in > out-s && fail=1
+compare /dev/null out-s || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/big-hole b/src/grep/tests/big-hole
new file mode 100755
index 0000000..eac077f
--- /dev/null
+++ b/src/grep/tests/big-hole
@@ -0,0 +1,29 @@
+#!/bin/sh
+# Check that grep --binary-file=without-match quickly skips files with holes.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+expensive_
+
+# Skip this test if there is no usable SEEK_HOLE support,
+# as is the case with linux-3.5.0 on ext4 and tmpfs file systems.
+$PERL -e '$f=*STDERR; sysseek($f,2**22,0); syswrite($f,"a");' \
+      -e 'exit ("0 but true" ne sysseek($f,0,4))' 2> seek-hole-test \
+  || skip_ "this system/FS lacks SEEK_HOLE support"
+
+# Try to make this test not THAT expensive, on typical hosts.
+virtual_memory_KiB=10240
+if echo x | (ulimit -v $virtual_memory_KiB && grep x) >/dev/null 2>&1; then
+  ulimit -v $virtual_memory_KiB
+fi
+
+# Create a file that starts with at least a buffer's worth of text,
+# but has a big hole later.
+(${AWK-awk} 'BEGIN{ for (i=0;i<1000;i++) printf "%080d\n", 0 }' < /dev/null
+  echo x | dd bs=1024k seek=8000000
+) >8T-or-so || skip_ 'cannot create big sparse file'
+
+grep --binary-file=without-match x 8T-or-so >/dev/null
+test $? -eq 1 || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/big-match b/src/grep/tests/big-match
new file mode 100755
index 0000000..0da9731
--- /dev/null
+++ b/src/grep/tests/big-match
@@ -0,0 +1,36 @@
+#!/bin/sh
+# Check that grep doesn't mishandle long matching lines.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+expensive_
+
+# Create a one-line file containing slightly more than 2 GiB.
+echo x | dd bs=1024k seek=2048 >2G-plus-2 || framework_failure_
+
+skip_diagnostic=
+
+# These two patterns catch different kinds of
+# failures due to internal integer overflows.
+# However, the second one, '^.*x\(\)\1', provokes
+# so much memory consumption via regexec.c that it renders
+# some systems unusable.
+for pattern in '^.*'; do
+  diagnostic=$(LC_ALL=C grep -a "$pattern" 2G-plus-2 2>&1 >/dev/null)
+  status=$?
+
+  case $status,$diagnostic in
+    0,*) ;;
+    2,*': line too long for re_search')
+       skip_diagnostic='regular expression library cannot handle the test' ;;
+    137,''|2,*': memory exhausted')
+       # The 137/no-diagnostic arises when the kernel OOM-kills grep.
+       skip_diagnostic='not enough main memory to run the test' ;;
+    *) fail=1 ;;
+  esac
+done
+
+case $fail,$skip_diagnostic in
+0,?*) skip_ "$skip_diagnostic" ;;
+esac
+
+Exit $fail
diff --git a/src/grep/tests/binary-file-matches b/src/grep/tests/binary-file-matches
new file mode 100755
index 0000000..7fc4a11
--- /dev/null
+++ b/src/grep/tests/binary-file-matches
@@ -0,0 +1,21 @@
+#! /bin/sh
+# Test for the "binary file ... matches" diagnostic.
+#
+# Copyright (C) 2020-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+echo "grep: (standard input): binary file matches" > exp \
+  || framework_failure_
+
+printf 'a\0' | grep a > out 2> err || fail=1
+compare /dev/null out || fail=1
+compare exp err || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/bogus-wctob b/src/grep/tests/bogus-wctob
new file mode 100755
index 0000000..6be6c39
--- /dev/null
+++ b/src/grep/tests/bogus-wctob
@@ -0,0 +1,17 @@
+#!/bin/sh
+# This was latent in grep-2.8 and earlier because we punted interpretation
+# of MBCSETs to glibc.  However, it becomes apparent as soon as "[à]" is
+# simplified to "à".
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+printf '\340'      > in || framework_failure_
+fail=0
+
+LC_ALL=en_US.UTF-8 grep '[à]' in
+case $? in
+  0) fail=1 ;;
+  1) ;;
+  2) framework_failure_ unexpected error from grep ;;
+esac
+
+Exit $fail
diff --git a/src/grep/tests/bre b/src/grep/tests/bre
new file mode 100755
index 0000000..5be164c
--- /dev/null
+++ b/src/grep/tests/bre
@@ -0,0 +1,21 @@
+#! /bin/sh
+# Regression test for GNU grep.
+#
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+# . . . and the following by Henry Spencer.
+
+${AWK-awk} -f $abs_top_srcdir/tests/bre.awk $abs_top_srcdir/tests/bre.tests \
+    > bre.script || fail=1
+
+${re_shell-${SHELL-sh}} ./bre.script || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/bre.awk b/src/grep/tests/bre.awk
new file mode 100644
index 0000000..519e270
--- /dev/null
+++ b/src/grep/tests/bre.awk
@@ -0,0 +1,33 @@
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+BEGIN {
+        FS="@";
+        n = 0;
+        printf ("# Generated Spencer BRE Test\n");
+        printf ("failures=0\n");
+}
+
+$0 ~ /^#/  { next; }
+
+NF == 3 {
+#	printf ("status=$(echo '%s' | { grep -e '%s' > /dev/null 2>&1; echo $?; cat >/dev/null; })\n",$3, $2);
+        printf ("status=$(echo '%s' | { grep -e '%s' > /dev/null 2>&1; echo $? ; })\n",$3, $2);
+        printf ("if test $status -ne %s ; then\n", $1);
+        printf ("\techo Spencer bre test \\#%d failed\n", ++n);
+        printf ("\tfailures=1\n");
+        printf ("fi\n");
+}
+
+NF == 4 {
+#don't alarm users
+#	printf ("echo '%s' | grep -e '%s' > /dev/null 2>&1\n",$3, $2);
+#	printf ("if test $? -ne %s ; then\n", $1);
+#	printf ("\techo Expected non conformance \\#%d ... continuing\n", ++n);
+#	printf ("fi\n");
+}
+
+END { printf ("exit $failures\n"); }
diff --git a/src/grep/tests/bre.tests b/src/grep/tests/bre.tests
new file mode 100644
index 0000000..9d01a3c
--- /dev/null
+++ b/src/grep/tests/bre.tests
@@ -0,0 +1,64 @@
+0@a\(b\)c@abc
+0@a(@a(
+2@a\(@EPAREN
+2@a\(b@EPAREN
+0@a(b@a(b
+0@a)@a)
+2@a\)@EPAREN
+2@\)@EPAREN
+0@a\(\)b@ab
+0@a^b@a^b
+0@a$b@a$b
+0@\($\)\(^\)@@TO CORRECT
+0@a*\(^b$\)c*@b
+0@|@|
+0@*@*
+0@\(\)@abc
+2@\(\{1\}a\)@BADRPT@TO CORRECT
+0@^*@*
+2@^\{1\}@BADRPT@TO CORRECT
+0@{@{
+1@a\(b*\)c\1d@abbcbd
+1@a\(b*\)c\1d@abbcbbbd
+1@^\(.\)\1@abc
+0@a\(\([bc]\)\2\)*d@abbccd
+1@a\(\([bc]\)\2\)*d@abbcbd
+0@a\(\(b\)*\2\)*d@abbbd
+0@\(a\)\1bcd@aabcd
+0@\(a\)\1bc*d@aabcd
+0@\(a\)\1bc*d@aabd
+0@\(a\)\1bc*d@aabcccd
+0@\(a\)\1bc*[ce]d@aabcccd@TO CORRECT
+0@^\(a\)\1b\(c\)*cd$@aabcccd
+0@a\(*\)b@a*b
+0@a\(**\)b@ab
+2@a\(***\)b@BADRPT@TO CORRECT
+0@*a@*a
+0@**a@a
+2@***a@BADRPT@TO CORRECT
+0@a\{1\}b@ab
+0@a\{1,\}b@ab
+0@a\{1,2\}b@aab
+2@a\{1@EBRACE
+2@a\{1a@EBRACE
+2@a\{1a\}@BADBR
+0@a\{,2\}@a\{,2\}
+0@a\{,\}@a\{,\}
+2@a\{\}@BADBR
+2@a\{1,x\}@BADBR
+2@a\{1,x@EBRACE
+2@a\{32768\}@BADBR
+2@a\{1,0\}@BADBR
+0@ab\{0,0\}c@abcac
+0@ab\{0,1\}c@abcac
+0@ab\{0,3\}c@abbcac
+0@ab\{1,1\}c@acabc
+0@ab\{1,3\}c@acabc
+0@ab\{2,2\}c@abcabbc
+0@ab\{2,4\}c@abcabbc
+2@a\{1\}\{1\}@BADRPT@TO CORRECT
+2@a*\{1\}@BADRPT@TO CORRECT
+2@a\{1\}*@BADRPT@TO CORRECT
+1@a\(b\)?c\1d@acd
+0@-\{0,1\}[0-9]*$@-5
+2@b\{1000000000\}@ESIZE
diff --git a/src/grep/tests/c-locale b/src/grep/tests/c-locale
new file mode 100755
index 0000000..15d63b2
--- /dev/null
+++ b/src/grep/tests/c-locale
@@ -0,0 +1,26 @@
+#! /bin/sh
+# Regression test for GNU grep.
+#
+# Copyright 2016-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+c=1
+while test $c -lt 256; do
+  tr2=$(printf '\\%o\n' $c)
+  echo X | tr X "$tr2" >in
+  if test $(wc -l <in) -eq 1; then
+    grep . in >out || fail=1
+    compare in out || fail=1
+  fi
+  test $fail -ne 0 && Exit $fail
+  c=$(expr $c + 1)
+done
+
+Exit $fail
diff --git a/src/grep/tests/case-fold-backref b/src/grep/tests/case-fold-backref
new file mode 100755
index 0000000..b96b481
--- /dev/null
+++ b/src/grep/tests/case-fold-backref
@@ -0,0 +1,14 @@
+#!/bin/sh
+# This would fail for grep-2.5.3
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+printf '%s foo\n' foo fOo Foo FOO > exp1 || framework_failure_
+fail=0
+
+for LOC in en_US.UTF-8 en_US zh_CN $LOCALE_FR_UTF8 C; do
+  out=out1-$LOC
+  LC_ALL=$LOC grep -Ei '(foo) \1' exp1 > $out || fail=1
+  compare exp1 $out || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/case-fold-backslash-w b/src/grep/tests/case-fold-backslash-w
new file mode 100755
index 0000000..57ff0f5
--- /dev/null
+++ b/src/grep/tests/case-fold-backslash-w
@@ -0,0 +1,13 @@
+#!/bin/sh
+# test that \W works on case-insensitive matches.  It used to become \w.
+# Derived from https://savannah.gnu.org/bugs/?28162
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+if echo foo bar | LANG=C.ASCII grep '^foo\W'; then
+  echo foo bar | LANG=C.ASCII grep -i '^foo\W' || fail_ ASCII insensitive
+else
+  echo foo bar | LANG=C grep '^foo\W' || fail_ LANG=C sensitive
+  echo foo bar | LANG=C grep -i '^foo\W' || fail_ LANG=C insensitive
+fi
+echo foo bar | LANG=en_US.UTF-8 grep '^foo\W' || fail_ UTF-8 sensitive
+echo foo bar | LANG=en_US.UTF-8 grep -i '^foo\W' || fail_ UTF-8 insensitive
diff --git a/src/grep/tests/case-fold-char-class b/src/grep/tests/case-fold-char-class
new file mode 100755
index 0000000..ac8f3ee
--- /dev/null
+++ b/src/grep/tests/case-fold-char-class
@@ -0,0 +1,22 @@
+#!/bin/sh
+# This would fail for grep-2.5.3
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+printf 'Y\n'      > exp1 || framework_failure_
+fail=0
+
+for LOC in en_US.UTF-8 zh_CN $LOCALE_FR_UTF8; do
+  out=out1-$LOC
+  printf 'X\nY\nZ\n' | LC_ALL=$LOC grep -i '[y]' > $out || fail=1
+  compare exp1 $out || fail=1
+done
+
+printf 'y\n'      > exp2 || framework_failure_
+
+for LOC in en_US.UTF-8 zh_CN $LOCALE_FR_UTF8; do
+  out=out2-$LOC
+  printf 'x\ny\nz\n' | LC_ALL=$LOC grep -i '[Y]' > $out || fail=1
+  compare exp2 $out || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/case-fold-char-range b/src/grep/tests/case-fold-char-range
new file mode 100755
index 0000000..4203024
--- /dev/null
+++ b/src/grep/tests/case-fold-char-range
@@ -0,0 +1,23 @@
+#!/bin/sh
+# This would fail for grep-2.5.3
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+printf 'A\nZ\n'      > exp1 || framework_failure_
+fail=0
+
+for LOC in en_US.UTF-8 zh_CN $LOCALE_FR_UTF8; do
+  out=out1-$LOC
+  printf 'A\n1\nZ\n.\n' | LC_ALL=$LOC grep -i '[a-z]' > $out || fail=1
+  compare exp1 $out || fail=1
+done
+
+# This actually passes also for grep-2.5.3
+printf 'a\nz\n'      > exp2 || framework_failure_
+
+for LOC in en_US.UTF-8 zh_CN $LOCALE_FR_UTF8; do
+  out=out2-$LOC
+  printf 'a\n1\nz\n.\n' | LC_ALL=$LOC grep -i '[A-Z]' > $out || fail=1
+  compare exp2 $out || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/case-fold-char-type b/src/grep/tests/case-fold-char-type
new file mode 100755
index 0000000..d5fd67c
--- /dev/null
+++ b/src/grep/tests/case-fold-char-type
@@ -0,0 +1,22 @@
+#!/bin/sh
+# This would fail for grep-2.5.3
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+printf 'Y\n'      > exp1 || framework_failure_
+fail=0
+
+for LOC in en_US.UTF-8 zh_CN $LOCALE_FR_UTF8; do
+  out=out1-$LOC
+  printf '1\nY\n.\n' | LC_ALL=$LOC grep -i '[[:lower:]]' > $out || fail=1
+  compare exp1 $out || fail=1
+done
+
+printf 'y\n'      > exp2 || framework_failure_
+
+for LOC in en_US.UTF-8 zh_CN $LOCALE_FR_UTF8; do
+  out=out2-$LOC
+  printf '1\ny\n.\n' | LC_ALL=$LOC grep -i '[[:upper:]]' > $out || fail=1
+  compare exp2 $out || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/case-fold-titlecase b/src/grep/tests/case-fold-titlecase
new file mode 100755
index 0000000..0aaf616
--- /dev/null
+++ b/src/grep/tests/case-fold-titlecase
@@ -0,0 +1,190 @@
+#!/bin/sh
+# Check that case folding works even with titlecase and similarly odd chars.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+require_compiled_in_MB_support
+LC_ALL=en_US.UTF-8
+export LC_ALL
+
+fail=0
+
+for testcase in \
+  0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
+do
+  case $testcase in
+    0)
+      a='\302\265'     # U+00B5
+      b='\316\234'     # U+039C
+      c='\316\274'     # U+03BC
+      ;;
+    1)
+      a='\111'         # U+0049
+      b='\151'         # U+0069
+      c='\304\260'     # U+0130
+      ;;
+    2)
+      a='\111'         # U+0049
+      b='\151'         # U+0069
+      c='\304\261'     # U+0131
+      ;;
+    3)
+      a='\123'         # U+0053
+      b='\163'         # U+0073
+      c='\305\277'     # U+017F
+      ;;
+    4)
+      a='\307\204'     # U+01C4
+      b='\307\205'     # U+01C5
+      c='\307\206'     # U+01C6
+      ;;
+    5)
+      a='\307\207'     # U+01C7
+      b='\307\210'     # U+01C8
+      c='\307\211'     # U+01C9
+      ;;
+    6)
+      a='\307\212'     # U+01CA
+      b='\307\213'     # U+01CB
+      c='\307\214'     # U+01CC
+      ;;
+    7)
+      a='\307\261'     # U+01F1
+      b='\307\262'     # U+01F2
+      c='\307\263'     # U+01F3
+      ;;
+    8)
+      a='\315\205'     # U+0345
+      b='\316\231'     # U+0399
+      c='\316\271'     # U+03B9
+      ;;
+    9)
+      a='\316\243'     # U+03A3
+      b='\317\202'     # U+03C2
+      c='\317\203'     # U+03C3
+      ;;
+    10)
+      a='\316\222'     # U+0392
+      b='\316\262'     # U+03B2
+      c='\317\220'     # U+03D0
+      ;;
+    11)
+      a='\316\230'     # U+0398
+      b='\316\270'     # U+03B8
+      c='\317\221'     # U+03D1
+      ;;
+    12)
+      a='\316\246'     # U+03A6
+      b='\317\206'     # U+03C6
+      c='\317\225'     # U+03D5
+      ;;
+    13)
+      a='\316\240'     # U+03A0
+      b='\317\200'     # U+03C0
+      c='\317\226'     # U+03D6
+      ;;
+    14)
+      a='\316\232'     # U+039A
+      b='\316\272'     # U+03BA
+      c='\317\260'     # U+03F0
+      ;;
+    15)
+      a='\316\241'     # U+03A1
+      b='\317\201'     # U+03C1
+      c='\317\261'     # U+03F1
+      ;;
+    16)
+      a='\316\230'     # U+0398
+      b='\316\270'     # U+03B8
+      c='\317\264'     # U+03F4
+      ;;
+    17)
+      a='\316\225'     # U+0395
+      b='\316\265'     # U+03B5
+      c='\317\265'     # U+03F5
+      ;;
+    18)
+      a='\341\271\240' # U+1E60
+      b='\341\271\241' # U+1E61
+      c='\341\272\233' # U+1E9B
+      ;;
+    19)
+      a='\303\237'     # U+00DF
+      b='\303\237'     # U+00DF
+      c='\341\272\236' # U+1E9E
+      ;;
+    20)
+      a='\316\231'     # U+0399
+      b='\316\271'     # U+03B9
+      c='\341\276\276' # U+1FBE
+      ;;
+    21)
+      a='\316\251'     # U+03A9
+      b='\317\211'     # U+03C9
+      c='\342\204\246' # U+2126
+      ;;
+    22)
+      a='\113'         # U+004B
+      b='\153'         # U+006B
+      c='\342\204\252' # U+212A
+      ;;
+    23)
+      a='\303\205'     # U+00C5
+      b='\303\245'     # U+00E5
+      c='\342\204\253' # U+212B
+      ;;
+    24)
+      a='\316\243'     # U+03A3
+      b='\317\203'     # U+03C3
+      c='\317\262'     # U+03F2
+      ;;
+  esac
+
+  printf "$a\\n$b\\n$c\\n" >in || framework_failure_
+  for pattern in "$a" "$b" "$c"; do
+     pat=$(printf "$pattern\\n") || framework_failure_
+     grep -i "\\(\\)\\1$pat" in >out-regex || fail=1
+     grep -i "$pat" in >out-dfa || fail=1
+     compare_ out-regex out-dfa || fail=1
+     grep -iF "$pat" in >out-fixed || fail=1
+     compare_ out-regex out-fixed || fail=1
+  done
+done
+
+# Try a unibyte test with ISO 8859-7, if available.
+if test "$(get-mb-cur-max el_GR.iso88597)" -eq 1; then
+  LC_ALL=el_GR.iso88597
+  export LC_ALL
+
+  a='\323' # SIGMA
+  b='\362' # stigma
+  c='\363' # sigma
+
+  printf "$a\\n$b\\n$c\\n" >in || framework_failure_
+  for pattern in "$a" "$b" "$c"; do
+     pat=$(printf "$pattern\\n") || framework_failure_
+     grep -i "\\(\\)\\1$pat" in >out-regex || fail=1
+     grep -i "$pat" in >out-dfa || fail=1
+     compare_ out-regex out-dfa || fail=1
+     grep -iF "$pat" in >out-fixed || fail=1
+     compare_ out-regex out-fixed || fail=1
+  done
+fi
+
+Exit $fail
diff --git a/src/grep/tests/char-class-multibyte b/src/grep/tests/char-class-multibyte
new file mode 100755
index 0000000..b957518
--- /dev/null
+++ b/src/grep/tests/char-class-multibyte
@@ -0,0 +1,30 @@
+#!/bin/sh
+# This would segfault for grep-2.6
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+require_compiled_in_MB_support
+
+printf 'é\n'      > exp1 || framework_failure_
+fail=0
+
+for LOC in en_US.UTF-8 $LOCALE_FR_UTF8; do
+  out=out1-$LOC
+  printf 'á\nç\né\n' | LC_ALL=$LOC grep '[é]' > $out || fail=1
+  compare exp1 $out || fail=1
+done
+
+printf 'É\n'      > exp2 || framework_failure_
+
+for LOC in en_US.UTF-8 $LOCALE_FR_UTF8; do
+  out=out2-$LOC
+  printf '�\nÇ\nÉ\n' | LC_ALL=$LOC grep '[É]' > $out || fail=1
+  compare exp2 $out || fail=1
+done
+
+for LOC in en_US.UTF-8 $LOCALE_FR_UTF8; do
+  out=out3-$LOC
+  printf '\303\n' | returns_ 1 env LC_ALL=$LOC grep '[é]' > $out || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/char-class-multibyte2 b/src/grep/tests/char-class-multibyte2
new file mode 100755
index 0000000..6cdada5
--- /dev/null
+++ b/src/grep/tests/char-class-multibyte2
@@ -0,0 +1,19 @@
+#!/bin/sh
+# This test would segfault for grep-2.14
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+require_compiled_in_MB_support
+
+e_acute=$(printf '\303\251')
+printf "$e_acute\n" > exp || framework_failure_
+fail=0
+
+for LOC in en_US.UTF-8 $LOCALE_FR_UTF8; do
+  out=out-$LOC
+  printf "á\nç\n$e_acute\n" | LC_ALL=$LOC grep -E "([^.]*[$e_acute]){1,2}" \
+      > $out || fail=1
+  compare exp $out || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/context-0 b/src/grep/tests/context-0
new file mode 100755
index 0000000..4b63305
--- /dev/null
+++ b/src/grep/tests/context-0
@@ -0,0 +1,27 @@
+#!/bin/sh
+# 0 lines of context
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+cat <<EOF > in || framework_failure_
+needle
+1st line of context
+2nd line of context
+3rd line of context
+another needle
+5th line of context relative to first match
+6th line...
+EOF
+
+cat <<EOF > exp || framework_failure_
+needle
+--
+another needle
+EOF
+
+fail=0
+grep -C 0 needle in > out 2>err || fail=1
+
+compare exp out || fail=1
+compare /dev/null err || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/count-newline b/src/grep/tests/count-newline
new file mode 100755
index 0000000..10e0870
--- /dev/null
+++ b/src/grep/tests/count-newline
@@ -0,0 +1,28 @@
+#!/bin/sh
+# Test that newline is counted correctly even when the transition
+# table is rebuilt.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+printf '%1024d\nb\n' 0 >in || framework_failure_
+
+grep -f in in >out || fail=1
+
+compare in out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/dfa-coverage b/src/grep/tests/dfa-coverage
new file mode 100755
index 0000000..0a67fbb
--- /dev/null
+++ b/src/grep/tests/dfa-coverage
@@ -0,0 +1,32 @@
+#!/bin/sh
+# Exercise the final reachable code in dfa.c's match_mb_charset.
+
+# Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+require_compiled_in_MB_support
+
+fail=0
+
+echo a > in || framework_failure_
+
+LC_ALL=en_US.UTF-8 grep -E '[^_]|$' in > out || fail=1
+
+compare out in || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/dfa-heap-overrun b/src/grep/tests/dfa-heap-overrun
new file mode 100755
index 0000000..4ffa789
--- /dev/null
+++ b/src/grep/tests/dfa-heap-overrun
@@ -0,0 +1,25 @@
+#!/bin/sh
+# Trigger a heap overrun in grep-2.6..grep-2.8.
+
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+returns_ 1 grep -E '(^| )*(a|b)*(c|d)*( |$)' < /dev/null || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/dfa-infloop b/src/grep/tests/dfa-infloop
new file mode 100755
index 0000000..e35eef5
--- /dev/null
+++ b/src/grep/tests/dfa-infloop
@@ -0,0 +1,12 @@
+#!/bin/sh
+# This would infloop for some unreleased versions between 2.26 and 2.27
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_timeout_
+
+fail=0
+
+echo cx > in || framework_failure_
+returns_ 1 timeout 10 env LC_ALL=C grep -E 'c\b[x ]' in || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/dfa-invalid-utf8 b/src/grep/tests/dfa-invalid-utf8
new file mode 100755
index 0000000..8d4e96e
--- /dev/null
+++ b/src/grep/tests/dfa-invalid-utf8
@@ -0,0 +1,29 @@
+#! /bin/sh
+# Test whether "grep '.'" matches invalid UTF-8 byte sequences.
+#
+# Copyright 2019-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_en_utf8_locale_
+require_compiled_in_MB_support
+
+fail=0
+
+printf 'a\360\202\202\254b\n' >in1 || framework_failure_
+LC_ALL=en_US.UTF-8 grep 'a.b' in1 > out1 2> err
+test $? -eq 1 || fail=1
+compare /dev/null out1 || fail=1
+compare /dev/null err1 || fail=1
+
+printf 'a\360\202\202\254ba\360\202\202\254b\n' >in2 ||
+  framework_failure_
+LC_ALL=en_US.UTF-8 grep -E '(a.b)\1' in2 > out2 2> err
+test $? -eq 1 || fail=1
+compare /dev/null out2 || fail=1
+compare /dev/null err2 || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/dfaexec-multibyte b/src/grep/tests/dfaexec-multibyte
new file mode 100755
index 0000000..baac9ba
--- /dev/null
+++ b/src/grep/tests/dfaexec-multibyte
@@ -0,0 +1,25 @@
+#!/bin/sh
+# This would fail for grep-2.5.3
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+printf 'aa\nab\nba\nbb\n' > exp1 || framework_failure_
+printf '1 2 3\n' > exp2 || framework_failure_
+
+fail=0
+
+for LOC in en_US.UTF-8 zh_CN $LOCALE_FR_UTF8; do
+  out=out1-ab-$LOC
+  LC_ALL=$LOC grep -E '([a]|[b]){2}' < exp1 > $out || fail=1
+  compare exp1 $out || fail=1
+
+  out=out1-ba-$LOC
+  LC_ALL=$LOC grep -E '([b]|[a]){2}' < exp1 > $out || fail=1
+  compare exp1 $out || fail=1
+
+  out=out2-$LOC
+  LC_ALL=$LOC grep -E '^([[:digit:]]+[[:space:]]+){2}' < exp2 > $out || fail=1
+  compare exp2 $out || fail=1
+
+done
+
+Exit $fail
diff --git a/src/grep/tests/empty b/src/grep/tests/empty
new file mode 100755
index 0000000..92f50bb
--- /dev/null
+++ b/src/grep/tests/empty
@@ -0,0 +1,82 @@
+#! /bin/sh
+# test that the empty file means no pattern
+# and an empty pattern means match all.
+#
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_timeout_
+
+failures=0
+
+for locale in C en_US.UTF-8; do
+    for options in '-E' '-F'; do
+
+        # should return 0 found a match
+        echo "" | LC_ALL=$locale timeout 10s grep $options -e ''
+        if test $? -ne 0 ; then
+          echo "Status: Wrong status code, test \#1 failed ($options $locale)"
+          failures=1
+        fi
+
+        # should return 1 found no match
+        echo abcd | LC_ALL=$locale timeout 10s grep $options -f /dev/null
+        if test $? -ne 1 ; then
+          echo "Status: Wrong status code, test \#2 failed ($options $locale)"
+          failures=1
+        fi
+
+        # should return 0 found a match
+        echo abcd \
+            | LC_ALL=$locale timeout 10s grep $options -f /dev/null -e abcd
+        if test $? -ne 0 ; then
+          echo "Status: Wrong status code, test \#3 failed ($options $locale)"
+          failures=1
+        fi
+
+        # should return 0 found a match
+        echo "" | LC_ALL=$locale timeout 10s grep $options -e ''
+        if test $? -ne 0 ; then
+          echo "Status: Wrong status code, test \#4 failed ($options $locale)"
+          failures=1
+        fi
+
+        # should return 0 found a match
+        echo abcd | LC_ALL=$locale timeout 10s grep $options -e ''
+        if test $? -ne 0 ; then
+          echo "Status: Wrong status code, test \#5 failed ($options $locale)"
+          failures=1
+        fi
+    done
+
+    for options in '-E -w' '-E -x' '-E -w -x' '-F -w' '-F -x' '-F -w -x'; do
+
+        # should return 0 found a match
+        echo "" | LC_ALL=$locale timeout 10s grep $options -e ''
+        if test $? -ne 0 ; then
+          echo "Status: Wrong status code, test \#6 failed ($options $locale)"
+          failures=1
+        fi
+
+        # should return 1 found no match
+        echo abcd | LC_ALL=$locale timeout 10s grep $options -f /dev/null
+        if test $? -ne 1 ; then
+          echo "Status: Wrong status code, test \#7 failed ($options $locale)"
+          failures=1
+        fi
+
+        # should return 1 found no match
+        echo abcd | LC_ALL=$locale timeout 10s grep $options -f /dev/null -e ""
+        if test $? -ne 1 ; then
+          echo "Status: Wrong status code, test \#8 failed ($options $locale)"
+          failures=1
+        fi
+    done
+done
+
+Exit $failures
diff --git a/src/grep/tests/empty-line b/src/grep/tests/empty-line
new file mode 100755
index 0000000..25e9509
--- /dev/null
+++ b/src/grep/tests/empty-line
@@ -0,0 +1,41 @@
+#! /bin/sh
+# Test that the empty pattern matches everything.
+# Some of these tests failed in grep 2.18.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+printf 'abc\n' >in || framework_failure_
+nl='
+'
+
+for opt in '' -E -F; do
+  case $opt in
+    '') prefix='\(\)\1';;
+    -E) prefix='()\1';;
+    -F) prefix="foo$nl";;
+  esac
+
+  for pattern in "" "$nl" "---$nl" "${nl}foo"; do
+    for pat in "$pattern" "$prefix$pattern"; do
+      grep $opt -e "$pat" in >out || fail=1
+      compare in out || fail=1
+
+      printf -- '%s\n' "$pat" >pat || framework_failure_
+      grep $opt -f pat in >out || fail=1
+      compare in out || fail=1
+
+      # Check that pattern files that end in non-newlines
+      # are treated as if a newline were appended.
+      case $pattern in
+        '' | *"$nl") ;;
+        *)
+          printf -- '%s' "$pat" >pat || framework_failure_
+          grep $opt -f pat in >out || fail=1
+          compare in out || fail=1;;
+      esac
+    done
+  done
+done
+
+Exit $fail
diff --git a/src/grep/tests/empty-line-mb b/src/grep/tests/empty-line-mb
new file mode 100755
index 0000000..579921d
--- /dev/null
+++ b/src/grep/tests/empty-line-mb
@@ -0,0 +1,29 @@
+#! /bin/sh
+# Exercise bugs in grep-2.13 with -i, -n and an RE of ^$ in a multi-byte locale.
+#
+# Copyright (C) 2012-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+
+LC_ALL=en_US.UTF-8
+export LC_ALL
+
+printf 'a\n\nb\n' > in || framework_failure_
+printf '2:\n' > exp || framework_failure_
+
+printf 'a\nb\n' > in2 || framework_failure_
+
+grep -n -i '^$' in > out || fail=1
+compare exp out || fail=1
+
+# Expect no match: with grep-2.13 this would mistakenly exit 0
+grep -i '^$' in2 > out && fail=1
+compare /dev/null out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/encoding-error b/src/grep/tests/encoding-error
new file mode 100755
index 0000000..2ec71c9
--- /dev/null
+++ b/src/grep/tests/encoding-error
@@ -0,0 +1,52 @@
+#! /bin/sh
+# Test grep's behavior on encoding errors.
+#
+# Copyright 2015-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+
+printf 'Alfred Jones\n' > a || framework_failure_
+printf 'John Smith\n' >j || framework_failure_
+printf 'Pedro P\351rez\n' >p || framework_failure_
+cat a p j >in || framework_failure_
+
+LC_ALL=en_US.UTF-8
+export LC_ALL
+
+fail=0
+
+grep '^A' in >out || fail=1
+compare a out || fail=1
+
+grep '^P' in >out || fail=1
+compare /dev/null out || fail=1
+
+grep -I '^P' in >out 2>err || fail=1
+compare /dev/null out || fail=1
+compare /dev/null err || fail=1
+
+grep '^J' in >out || fail=1
+compare j out || fail=1
+
+returns_ 1 grep '^X' in >out || fail=1
+compare /dev/null out || fail=1
+
+grep . in >out || fail=1
+cat a j >exp || framework_failure_
+compare exp out || fail=1
+
+grep -I . in >out 2>err || fail=1
+cat a j >exp || framework_failure_
+compare exp out || fail=1
+compare /dev/null err || fail=1
+
+grep -a . in >out || fail=1
+compare in out
+
+Exit $fail
diff --git a/src/grep/tests/envvar-check b/src/grep/tests/envvar-check
new file mode 100644
index 0000000..decc256
--- /dev/null
+++ b/src/grep/tests/envvar-check
@@ -0,0 +1,63 @@
+# -*- sh -*-
+# Check environment variables for sane values while testing.
+
+# Copyright (C) 2000-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+if (FOO=FOO; unset FOO) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+envvar_check_fail=0
+vars='
+  _POSIX2_VERSION
+  _STDBUF_E
+  _STDBUF_I
+  _STDBUF_O
+  BASH_ENV
+  BLOCKSIZE
+  BLOCK_SIZE
+  CDPATH
+  COLUMNS
+  DF_BLOCK_SIZE
+  DU_BLOCK_SIZE
+  ENV
+  LANGUAGE
+  LS_BLOCK_SIZE
+  LS_COLORS
+  OMP_NUM_THREADS
+  POSIXLY_CORRECT
+  QUOTING_STYLE
+  SIMPLE_BACKUP_SUFFIX
+  TABSIZE
+  TERM
+  COLORTERM
+  TIME_STYLE
+  TMPDIR
+  VERSION_CONTROL
+'
+for var in $vars
+do
+  $as_unset $var
+  if eval test \"\${$var+set}\" = set; then
+    echo "$0: the $var environment variable is set --" \
+      ' unset it and rerun this test' >&2
+    envvar_check_fail=1
+  fi
+done
+
+test "$envvar_check_fail" = 1 && exit 1
diff --git a/src/grep/tests/epipe b/src/grep/tests/epipe
new file mode 100755
index 0000000..3b568e3
--- /dev/null
+++ b/src/grep/tests/epipe
@@ -0,0 +1,29 @@
+#!/bin/sh
+# Check that a write failure with errno == EPIPE
+# doesn't cause grep to issue multiple "write error" diagnostics.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+if
+   # Use awk to output a bounded amount of data to the grep in question,
+   # so that the test doesn't loop forever if grep is buggy.
+   # Use an explicit /dev/null for the benefit of older (pre-POSIX) awks.
+   #
+   # Carefully close fd 3 when not needed, as a sanity check.
+   #
+   # Do not use "trap - PIPE" or "trap 'something' PIPE" here, since we may
+   # be running in an environment where SIGPIPE is ignored, and in such an
+   # environment POSIX says that "trap '' PIPE" is all we can do portably.
+   (
+     ${AWK-awk} 'BEGIN { for (i=0; i<1000000; i++) print i; }' /dev/null 3>&- |
+     (trap '' PIPE; exec grep . 2>&3 3>&-) |
+     :
+   ) 3>&1 | (
+     read line1 && echo >&2 "$line1" &&
+     read line2 && echo >&2 "$line2"
+   )
+then fail=1
+else fail=0
+fi
+
+Exit $fail
diff --git a/src/grep/tests/equiv-classes b/src/grep/tests/equiv-classes
new file mode 100755
index 0000000..940efa4
--- /dev/null
+++ b/src/grep/tests/equiv-classes
@@ -0,0 +1,13 @@
+#!/bin/sh
+# Test that equivalence classes work.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+require_compiled_in_MB_support
+
+LC_ALL=en_US.UTF-8
+export LC_ALL
+
+echo à | grep '[[=a=]]' > /dev/null
+Exit $?
diff --git a/src/grep/tests/ere b/src/grep/tests/ere
new file mode 100755
index 0000000..7d2c75b
--- /dev/null
+++ b/src/grep/tests/ere
@@ -0,0 +1,21 @@
+#! /bin/sh
+# Regression test for GNU grep.
+#
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+# . . . and the following by Henry Spencer.
+
+${AWK-awk} -f $abs_top_srcdir/tests/ere.awk $abs_top_srcdir/tests/ere.tests \
+  > ere.script || fail=1
+
+${re_shell-${SHELL-sh}} ere.script || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/ere.awk b/src/grep/tests/ere.awk
new file mode 100644
index 0000000..3b4c629
--- /dev/null
+++ b/src/grep/tests/ere.awk
@@ -0,0 +1,38 @@
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+BEGIN {
+        FS="@";
+        n = 0;
+        printf ("# Generated Spencer ERE Test\n");
+        printf ("failures=0\n");
+}
+
+$0 ~ /^#/  { next; }
+
+NF == 3 {
+#	printf ("status=$(echo '%s' | { grep -E -e '%s' > /dev/null 2>&1; echo $?; cat >/dev/null; })\n",$3, $2);
+        printf ("status=$(echo '%s' | { grep -E -e '%s' > /dev/null 2>&1; echo $?;  })\n",$3, $2);
+        printf ("if test $status -ne %s ; then\n", $1);
+        printf ("\techo Spencer ere test \\#%d failed\n", ++n);
+        printf ("\tfailures=1\n");
+        printf ("fi\n");
+}
+
+NF == 4 {
+# don't alarm the user for now
+#	printf ("echo '%s'|grep -E -e '%s' > /dev/null 2>&1\n",$3, $2);
+#	printf ("if test $? -ne %s ; then\n", $1);
+#	printf ("\techo Expected non conformance \\#%d ... continuing\n", ++n);
+#	printf ("fi\n");
+}
+
+NF == 5 {
+# don't alarm the user for now
+        next;
+}
+
+END { printf ("exit $failures\n"); }
diff --git a/src/grep/tests/ere.tests b/src/grep/tests/ere.tests
new file mode 100644
index 0000000..557d4db
--- /dev/null
+++ b/src/grep/tests/ere.tests
@@ -0,0 +1,222 @@
+0@a@a
+0@abc@abc
+0@abc|de@abc
+0@a|b|c@abc
+0@a(b)c@abc
+2@a(@EPAREN
+0@a\(@a(
+2@a(b@EPAREN
+0@a)@a)@POSIX BOTCH
+0@)@)@POSIX BOTCH
+0@a()b@ab
+0@^abc$@abc
+1@a^b@a^b
+1@a$b@a$b
+0@^@abc
+0@$@abc
+0@^$@@TO CORRECT
+0@$^@@TO CORRECT
+0@^^@@TO CORRECT
+0@$$@@TO CORRECT
+0@a*(^b$)c*@b
+2@|@EMPTY@NO ALTERNATION
+2@*@BADRPT@TO CORRECT
+2@+@BADRPT@TO CORRECT
+2@?@BADRPT@TO CORRECT
+1@&C@PASS
+0@()@abc
+2@a||b@EMPTY@NO ALTERNATION
+2@|ab@EMPTY@NO ALTERNATION
+2@ab|@EMPTY@NO ALTERNATION
+2@(|a)b@EMPTY@NO ALTERNATION
+2@(a|)b@EMPTY@NO ALTERNATION
+2@(*a)@BADRPT@TO CORRECT
+2@(+a)@BADRPT@TO CORRECT
+2@(?a)@BADRPT@TO CORRECT
+2@({1}a)@BADRPT@TO CORRECT
+2@(a|*b)@BADRPT@NO ALTERNATION
+2@(a|+b)@BADRPT@NO ALTERNATION
+2@(a|?b)@BADRPT@NO ALTERNATION
+2@(a|{1}b)@BADRPT@NO ALTERNATION
+2@^*@BADRPT@TO CORRECT
+2@^+@BADRPT@TO CORRECT
+2@^?@BADRPT@TO CORRECT
+2@^{1}@BADRPT@TO CORRECT
+0@a.c@abc
+0@a[bc]d@abd
+0@a\*c@a*c
+0@a\\b@a\b@TO CORRECT
+0@a\\\*b@a\*b@SHELL TROUBLE
+0@a\bc@abc@TO CORRECT
+2@a\@EESCAPE@SHELL TROUBLE
+0@a\\bc@a\bc@TO CORRECT
+0@a\[b@a[b
+2@a[b@EBRACK
+0@a$@a
+1@a$@a$
+1@a\$@a@SHELL TROUBLE
+0@a\$@a$@SHELL TROUBLE
+1@a\\$@a
+1@a\\$@a$@SHELL TROUBLE
+1@a\\$@a\$@SHELL TROUBLE
+0@a\\$@a\@SHEL TROUBLE
+0@ab*c@abc
+0@ab+c@abc
+0@ab?c@abc
+0@{@{@TO CORRECT
+0@{abc@{abc@TO CORRECT
+0@{1@{1
+2@{1}@BADRPT@TO CORRECT
+0@a{b@a{b@TO CORRECT
+0@a{1}b@ab
+0@a{1,}b@ab
+0@a{1,2}b@aab
+0@a{1@a{1
+1@a{1a@aa
+0@a{1a}@a{1a}
+0@a{,2}@a{,2}
+0@a{,}@a{,}
+2@a{}@BADBR
+0@a{1,*}@a{1,,,}
+2@a{1,x@EBRACE@TO CORRECT
+2@a{300}@BADBR@TO CORRECT
+2@a{1,0}@BADBR@TO CORRECT
+0@ab{0,0}c@abcac
+0@ab{0,1}c@abcac
+0@ab{0,3}c@abbcac
+0@ab{1,1}c@acabc
+0@ab{1,3}c@acabc
+0@ab{2,2}c@abcabbc
+0@ab{2,4}c@abcabbc
+2@a**@BADRPT@TO CORRECT
+2@a++@BADRPT@TO CORRECT
+2@a??@BADRPT@TO CORRECT
+2@a*+@BADRPT@TO CORRECT
+2@a*?@BADRPT@TO CORRECT
+2@a+*@BADRPT@TO CORRECT
+2@a+?@BADRPT@TO CORRECT
+2@a?*@BADRPT@TO CORRECT
+2@a?+@BADRPT@TO CORRECT
+2@a{1}{1}@BADRPT@TO CORRECT
+2@a*{1}@BADRPT@TO CORRECT
+2@a+{1}@BADRPT@TO CORRECT
+2@a?{1}@BADRPT@TO CORRECT
+2@a{1}*@BADRPT@TO CORRECT
+2@a{1}+@BADRPT@TO CORRECT
+2@a{1}?@BADRPT@TO CORRECT
+0@a*{b}@a{b}@TO CORRECT
+0@a[b]c@abc
+0@a[ab]c@abc
+0@a[^ab]c@adc
+0@a[]b]c@a]c
+0@a[[b]c@a[c
+0@a[-b]c@a-c
+0@a[^]b]c@adc
+0@a[^-b]c@adc
+0@a[b-]c@a-c
+2@a[b@EBRACK
+2@a[]@EBRACK
+0@a[1-3]c@a2c
+2@a[3-1]c@ERANGE@TO CORRECT
+2@a[1-3-5]c@ERANGE@TO CORRECT
+0@a[[.-.]--]c@a-c@TO CORRECT
+2@a[1-@ERANGE
+2@a[[.@EBRACK
+2@a[[.x@EBRACK
+2@a[[.x.@EBRACK
+2@a[[.x.]@EBRACK@TO CORRECT
+0@a[[.x.]]@ax@TO CORRECT
+2@a[[.x,.]]@ECOLLATE@TO CORRECT
+0@a[[.one.]]b@a1b@TO CORRECT
+2@a[[.notdef.]]b@ECOLLATE@TO CORRECT
+0@a[[.].]]b@a]b@TO CORRECT
+0@a[[:alpha:]]c@abc
+2@a[[:notdef:]]c@ECTYPE
+2@a[[:@EBRACK
+2@a[[:alpha@EBRACK
+2@a[[:alpha:]@EBRACK
+2@a[[:alpha,:]@ECTYPE
+2@a[[:]:]]b@ECTYPE
+2@a[[:-:]]b@ECTYPE
+2@a[[:alph:]]@ECTYPE
+2@a[[:alphabet:]]@ECTYPE
+0@[[:digit:]]+@a019b
+0@[[:lower:]]+@AabC
+0@[[:upper:]]+@aBCd
+0@[[:xdigit:]]+@p0f3Cq
+0@a[[=b=]]c@abc@TO CORRECT
+2@a[[=@EBRACK
+2@a[[=b@EBRACK
+2@a[[=b=@EBRACK
+2@a[[=b=]@EBRACK@TO CORRECT
+2@a[[=b,=]]@ECOLLATE@TO CORRECT
+0@a[[=one=]]b@a1b@TO CORRECT
+0@a(((b)))c@abc
+0@a(b|(c))d@abd
+0@a(b*|c)d@abbd
+0@a[ab]{20}@aaaaabaaaabaaaabaaaab
+0@a[ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab]@aaaaabaaaabaaaabaaaab
+0@a[ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab](wee|week)(knights|night)@aaaaabaaaabaaaabaaaabweeknights
+0@12345678901234567890123456789@a12345678901234567890123456789b
+0@123456789012345678901234567890@a123456789012345678901234567890b
+0@1234567890123456789012345678901@a1234567890123456789012345678901b
+0@12345678901234567890123456789012@a12345678901234567890123456789012b
+0@123456789012345678901234567890123@a123456789012345678901234567890123b
+0@1234567890123456789012345678901234567890123456789012345678901234567890@a1234567890123456789012345678901234567890123456789012345678901234567890b
+0@[ab][cd][ef][gh][ij][kl][mn]@xacegikmoq
+0@[ab][cd][ef][gh][ij][kl][mn][op]@xacegikmoq
+0@[ab][cd][ef][gh][ij][kl][mn][op][qr]@xacegikmoqy
+0@[ab][cd][ef][gh][ij][kl][mn][op][q]@xacegikmoqy
+0@abc@xabcy
+0@aBc@Abc@TO CORRECT
+0@a[Bc]*d@abBCcd@TO CORRECT
+0@0[[:upper:]]1@0a1@TO CORRECT
+0@0[[:lower:]]1@0A1@TO CORRECT
+1@a[^b]c@abc
+1@a[^b]c@aBc@TO CORRECT
+0@a[^b]c@adc
+0@[a]b[c]@abc
+0@[a]b[a]@aba
+0@[abc]b[abc]@abc
+0@[abc]b[abd]@abd
+0@a(b?c)+d@accd
+0@(wee|week)(knights|night)@weeknights
+0@(we|wee|week|frob)(knights|night|day)@weeknights
+0@a[bc]d@xyzaaabcaababdacd
+0@a[ab]c@aaabc
+0@a*@b
+0@/\*.*\*/@/*x*/
+0@/\*.*\*/@/*x*/y/*z*/
+0@/\*([^*]|\*[^/])*\*/@/*x*/
+0@/\*([^*]|\*[^/])*\*/@/*x*/y/*z*/
+0@/\*([^*]|\*[^/])*\*/@/*x**/y/*z*/
+0@/\*([^*]|\*+[^*/])*\*+/@/*x*/
+0@/\*([^*]|\*+[^*/])*\*+/@/*x*/y/*z*/
+0@/\*([^*]|\*+[^*/])*\*+/@/*x**/y/*z*/
+0@/\*([^*]|\*+[^*/])*\*+/@/*x****/y/*z*/
+0@/\*([^*]|\*+[^*/])*\*+/@/*x**x*/y/*z*/
+0@/\*([^*]|\*+[^*/])*\*+/@/*x***x/y/*z*/
+0@aZb@a@TO CORRECT
+0@[[:<:]]a@a@TO CORRECT
+1@[[:<:]]a@ba@TO CORRECT
+0@[[:<:]]a@-a@TO CORRECT
+0@a[[:>:]]@a@TO CORRECT
+1@a[[:>:]]@ab@TO CORRECT
+0@a[[:>:]]@a-@TO CORRECT
+0@[[:<:]]a.c[[:>:]]@axcd-dayc-dazce-abc@TO CORRECT
+0@[[:<:]]a.c[[:>:]]@axcd-dayc-dazce-abc-q@TO CORRECT
+0@[[:<:]]a.c[[:>:]]@axc-dayc-dazce-abc@TO CORRECT
+0@[[:<:]]b.c[[:>:]]@a_bxc-byc_d-bzc-q@TO CORRECT
+0@[[:<:]].x..[[:>:]]@y_xa_-_xb_y-_xc_-axdc@TO CORRECT
+1@[[:<:]]a_b[[:>:]]@x_a_b@TO CORRECT
+0@(A[1])|(A[2])|(A[3])|(A[4])|(A[5])|(A[6])|(A[7])|(A[8])|(A[9])|(A[A])@A1
+0@abcdefghijklmnop@abcdefghijklmnop
+0@abcdefghijklmnopqrstuv@abcdefghijklmnopqrstuv
+0@CC[13]1|a{21}[23][EO][123][Es][12]a{15}aa[34][EW]aaaaaaa[X]a@CC11
+0@a?b@ab
+2@b{1000000000}@ESIZE
+0@)@)
+1@)@x
+0@\()\((a\())(b))@()(a()b)
+# This would erroneously match from grep-3.2 to grep-3.5
+1@a+a+a@aa
diff --git a/src/grep/tests/euc-mb b/src/grep/tests/euc-mb
new file mode 100755
index 0000000..c639374
--- /dev/null
+++ b/src/grep/tests/euc-mb
@@ -0,0 +1,47 @@
+#!/bin/sh
+# test that matches starting in the middle of a multibyte char aren't rejected
+# too greedily.
+# Derived from https://savannah.gnu.org/bugs/?23814
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+# Add "." to PATH for the use of get-mb-cur-max.
+path_prepend_ .
+
+require_compiled_in_MB_support
+
+locale=ja_JP.EUC-JP
+
+make_input () {
+  echo "$1" | tr AB '\244\263'
+}
+
+euc_grep () {
+  pat=$(make_input "$1")
+  LC_ALL=$locale grep "$pat"
+}
+
+case $(get-mb-cur-max $locale) in
+  2|3) ;;
+  *) skip_ 'EUC-JP locale not found' ;;
+esac
+
+fail=0
+
+# Does EUC-JP work at all?
+make_input BABA |euc_grep AB && fail=1
+
+# Here are two cases in which a KWSet search matches in the middle
+# of a multibyte character.  The first ensures that the DFA matcher
+# finds the real match at the end of line.  The second ensures that
+# while the KWSet match found a false positive, the DFA matcher
+# determines there is no match after all.
+make_input BABAAB |euc_grep AB > out || fail=1
+make_input BABAAB > exp || framework_failure_
+compare exp out || fail=1
+make_input BABABA |returns_ 1 euc_grep AB || fail=1
+make_input BABABA |returns_ 1 euc_grep '^x\|AB' || fail=1
+
+# -P supports only unibyte and UTF-8 locales.
+returns_ 2 env LC_ALL=$locale grep -P x /dev/null || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/false-match-mb-non-utf8 b/src/grep/tests/false-match-mb-non-utf8
new file mode 100755
index 0000000..e618996
--- /dev/null
+++ b/src/grep/tests/false-match-mb-non-utf8
@@ -0,0 +1,38 @@
+#! /bin/sh
+# Test for false matches in grep 2.19..2.26 in multibyte, non-UTF8 locales
+#
+# Copyright (C) 2016-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+# Add "." to PATH for the use of get-mb-cur-max.
+path_prepend_ .
+
+fail=0
+
+loc=zh_CN.gb18030
+test "$(get-mb-cur-max $loc)" = 4 || skip_ "no support for the $loc locale"
+
+# This must not match: the input is a single character, \uC9 followed
+# by a newline.  But it just so happens that that character is made up
+# of four bytes, the last of which is the digit, 7, and grep's DFA
+# matcher would mistakenly report that ".*7" matches that input line.
+printf '\2010\2077\n' > in || framework_failure_
+returns_ 1 env LC_ALL=$loc grep -E '.*7' in || fail=1
+
+returns_ 1 env LC_ALL=$loc grep -E '.{0,1}7' in || fail=1
+
+returns_ 1 env LC_ALL=$loc grep -E '.?7' in || fail=1
+
+# Similar for the \ue9 code point, which ends in an "m" byte.
+loc=zh_HK.big5hkscs
+test "$(get-mb-cur-max $loc)" = 2 || skip_ "no support for the $loc locale"
+
+printf '\210m\n' > in || framework_failure_
+returns_ 1 env LC_ALL=$loc grep '.*m' in || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/fedora b/src/grep/tests/fedora
new file mode 100755
index 0000000..43650f3
--- /dev/null
+++ b/src/grep/tests/fedora
@@ -0,0 +1,103 @@
+#!/bin/sh
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+# GREP Regression test suite for Fedora bugs and fixes
+# (c) 2008 Lubomir Rintel
+# Licensed under the same terms as GNU Grep itself
+
+if [ -t 1 ]
+then
+        # Colored output on terminal
+        G='\033[32m'
+        R='\033[31m'
+        D='\033[0m'
+fi
+
+ok ()	{ printf "${G}OK${D}"; }
+fail () { printf "${R}FAIL${D} (See ${U})"; failures=1; }
+
+U=https://bugzilla.redhat.com/show_bug.cgi?id=116909
+printf "fgrep false negatives: "
+cat > 116909.list <<EOF
+a
+b
+c
+EOF
+cat > 116909.in <<EOF
+a
+barn
+c
+EOF
+cat > 116909.out <<EOF
+a
+c
+EOF
+grep -F -w -f 116909.list 116909.in > actual || fail
+compare 116909.out actual && ok || fail
+
+U=https://bugzilla.redhat.com/show_bug.cgi?id=123362
+printf 'bad handling of brackets in UTF-8: '
+echo Y > 123362.out
+echo Y | LC_ALL=de_DE.UTF-8 grep -i '[y,Y]' > actual || fail
+compare 123362.out actual && ok || fail
+
+U=https://bugzilla.redhat.com/show_bug.cgi?id=112869
+printf 'crash with \\W: '
+echo '<form>' > 112869.out
+LANG=it_IT grep -iE '\Wform\W' 112869.out > actual || fail
+compare 112869.out actual && ok || fail
+
+if ( timeout --version ) > /dev/null 2>&1; then
+
+  U=https://bugzilla.redhat.com/show_bug.cgi?id=189580
+  printf 'grep -D skip opening a special file: '
+  returns_ 124 timeout 10 grep -D skip foo /dev/zero && fail || ok
+
+  U=https://bugzilla.redhat.com/show_bug.cgi?id=169524
+  printf 'grep -Fw looping infinitely: '
+  echo foobar | returns_ 124 timeout 10 grep -Fw "" && fail || ok
+
+  U=https://bugzilla.redhat.com/show_bug.cgi?id=140781
+  printf 'fgrep hangs on binary files: '
+  returns_ 124 timeout 10 grep -F grep "$abs_top_builddir/src/grep" \
+    > /dev/null && fail || ok
+
+fi
+
+U=https://bugzilla.redhat.com/show_bug.cgi?id=161700
+printf 'grep -Fw fails to match anything: '
+echo test > 161700.out
+grep -Fw test 161700.out > actual || fail
+compare 161700.out actual && ok || fail
+
+U=https://bugzilla.redhat.com/show_bug.cgi?id=179698
+printf 'grep -w broken in non-utf8 multibyte locales: '
+echo za a > 179698.out
+LANG=ja_JP.eucjp grep -w a 179698.out > actual || fail
+compare 179698.out actual && ok || fail
+
+# Skip the rest of tests in compiled without PCRE
+echo a |grep -P a >/dev/null || Exit $failures
+
+U=https://bugzilla.redhat.com/show_bug.cgi?id=171379
+printf 'grep -P crashes on whitespace lines: '
+echo '   ' > 171379.out
+grep -P '^\s+$' 171379.out > actual || fail
+compare 171379.out actual && ok || fail
+
+U=https://bugzilla.redhat.com/show_bug.cgi?id=204255
+printf '%s' "-e '' does not work if not a first parameter: "
+echo test | grep -e 'HighlightThis' -e '' > 204255.first
+echo test | grep -e '' -e 'HighlightThis' > 204255.second
+diff 204255.first 204255.second && ok || fail
+
+U=https://bugzilla.redhat.com/show_bug.cgi?id=324781
+printf 'bad handling of line breaks with grep -P #1: '
+printf 'a\na' | grep -P '[^a]' >/dev/null && fail || ok
+
+# This is mostly a check that fix for above doesn't break -P further
+printf '%s' "bad handling of line breaks with grep -P #2: "
+printf 'a\na' | grep -P '[^b].[^b]' >/dev/null && fail || ok
+
+Exit $failures
diff --git a/src/grep/tests/fgrep-infloop b/src/grep/tests/fgrep-infloop
new file mode 100755
index 0000000..015ec74
--- /dev/null
+++ b/src/grep/tests/fgrep-infloop
@@ -0,0 +1,27 @@
+#!/bin/sh
+# This would infloop for grep-2.6.1
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+require_timeout_
+require_compiled_in_MB_support
+
+encode() { echo "$1" | tr ABC '\357\274\241'; }
+
+encode ABC > in || framework_failure_
+fail=0
+
+for LOC in en_US.UTF-8 $LOCALE_FR_UTF8; do
+  out=out1-$LOC
+  LC_ALL=$LOC timeout 10s grep -F "$(encode BC)" in > $out
+  status=$?
+  if test $status -eq 0; then
+    compare in $out
+  elif test $status -eq 1; then
+    compare_dev_null_ /dev/null $out
+  else
+    test $status -eq 2
+  fi || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/fgrep-longest b/src/grep/tests/fgrep-longest
new file mode 100755
index 0000000..9fd9879
--- /dev/null
+++ b/src/grep/tests/fgrep-longest
@@ -0,0 +1,23 @@
+#! /bin/sh
+# With multiple matches, grep -Fo could print a shorter one.
+# This bug affected grep versions 2.26 through 2.27.
+#
+# Copyright (C) 2017-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+# The erroneous versions would print "c", rather than the longer match, "bce".
+printf 'abce\n' > in || framework_failure_
+printf 'abcd\nc\nbce\n' > pat || framework_failure_
+printf 'bce\n' > exp || framework_failure_
+
+LC_ALL=C grep -Fof pat in > out || fail=1
+compare exp out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/file b/src/grep/tests/file
new file mode 100755
index 0000000..236d9f0
--- /dev/null
+++ b/src/grep/tests/file
@@ -0,0 +1,63 @@
+#! /bin/sh
+# Test for POSIX options for grep:
+# grep -E -f pattern_file file
+# grep -F -f pattern_file file
+# grep -G -f pattern_file file
+#
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+cat <<EOF >patfile
+radar
+MILES
+GNU
+EOF
+
+# match
+echo "miles" |  grep -i -E -f patfile > /dev/null 2>&1
+if test $? -ne 0 ; then
+        echo "File_pattern: Wrong status code, test \#1 failed"
+        fail=1
+fi
+
+# match
+echo "GNU" | grep -G -f patfile  > /dev/null 2>&1
+if test $? -ne 0 ; then
+        echo "File_pattern: Wrong status code, test \#2 failed"
+        fail=1
+fi
+
+# checking for no match
+echo "ridar" | grep -F -f patfile > /dev/null 2>&1
+if test $? -ne 1 ; then
+        echo "File_pattern: Wrong status code, test \#3 failed"
+        fail=1
+fi
+
+cat <<EOF >patfile
+
+EOF
+# empty pattern : every match
+echo "abbcd" | grep -F -f patfile > /dev/null 2>&1
+if test $? -ne 0 ; then
+        echo "File_pattern: Wrong status code, test \#4 failed"
+        fail=1
+fi
+
+cp /dev/null patfile
+
+# null pattern : no match
+echo "abbcd" | grep -F -f patfile > /dev/null 2>&1
+if test $? -ne 1 ; then
+        echo "File_pattern: Wrong status code, test \#5 failed"
+        fail=1
+fi
+
+Exit $fail
diff --git a/src/grep/tests/filename-lineno.pl b/src/grep/tests/filename-lineno.pl
new file mode 100755
index 0000000..1e84b45
--- /dev/null
+++ b/src/grep/tests/filename-lineno.pl
@@ -0,0 +1,130 @@
+#!/usr/bin/perl
+# Prior to 2.26, an invalid regexp in a -f-specified file would elicit
+# a diagnostic like "Unmatched [ or [^", with no indication of the
+# file or line number from which the offending regular expression came.
+# With 2.26, now, each such diagnostic has a "FILENAME:LINENO: " prefix.
+
+# Copyright (C) 2016-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use strict;
+
+(my $program_name = $0) =~ s|.*/||;
+
+my $prog = 'grep';
+my $full_prog_name = `$prog --no-such-option 2>&1`;
+$full_prog_name =~ s/:.*//s;
+$prog = $full_prog_name if $full_prog_name;
+
+# Turn off localization of executable's output.
+@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
+
+# There are at least two variants of one diagnostic:
+#   - Unmatched [, [^, [:, [., or [=
+#   - Unmatched [ or [^
+# Transform each to this: "Unmatched [..."
+my $err_subst = {ERR_SUBST => 's/(: Unmatched \[).*/$1.../'};
+
+my $no_pcre = "$prog: Perl matching not supported in a --disable-perl-regexp build\n";
+
+my @Tests =
+  (
+   # Show that grep now includes filename:lineno in the diagnostic:
+   ['invalid-re', '-f g', {AUX=>{g=>"1\n2\n3\n4[[\n"}}, {EXIT=>2},
+    $err_subst,
+    {ERR => "$prog: g:4: Unmatched [...\n"},
+   ],
+
+   # Show that with two or more errors, grep now prints all diagnostics:
+   ['invalid-re-2-files', '-f g -f h', {EXIT=>2},
+    {AUX=>{g=>"1\n2[[\n3\n4[[\n"}},
+    {AUX=>{h=>"5\n6\n7[[\n"}},
+    $err_subst,
+    {ERR => "$prog: g:2: Unmatched [...\n"
+         . "$prog: g:4: Unmatched [...\n"
+         . "$prog: h:3: Unmatched [...\n"
+    },
+   ],
+
+   # Like the above, but on the other lines.
+   ['invalid-re-2-files2', '-f g -f h', {EXIT=>2},
+    {AUX=>{g=>"1[[\n2\n3[[\n4\n"}},
+    {AUX=>{h=>"5[[\n6[[\n7\n"}},
+    $err_subst,
+    {ERR => "$prog: g:1: Unmatched [...\n"
+         . "$prog: g:3: Unmatched [...\n"
+         . "$prog: h:1: Unmatched [...\n"
+         . "$prog: h:2: Unmatched [...\n"
+    },
+   ],
+
+   # Make sure the line numbers are right when some regexps are duplicates.
+   ['invalid-re-line-numbers', '-f g -f h', {EXIT=>2},
+    {AUX=>{g=>"1[[\n\n3[[\n\n5[[\n"}},
+    {AUX=>{h=>"1[[\n\n\n4[[\n\n6[[\n"}},
+    $err_subst,
+    {ERR => "$prog: g:1: Unmatched [...\n"
+         . "$prog: g:3: Unmatched [...\n"
+         . "$prog: g:5: Unmatched [...\n"
+         . "$prog: h:4: Unmatched [...\n"
+         . "$prog: h:6: Unmatched [...\n"
+    },
+   ],
+
+   # Show that with two '-e'-specified erroneous regexps,
+   # there is no file name or line number.
+   ['invalid-re-2e', '-e "1[[" -e "2[["', {EXIT=>2},
+    $err_subst,
+    {ERR => "$prog: Unmatched [...\n" x 2},
+   ],
+
+   # Test unmatched ) as well.  It is OK with -E and an error with -G and -P.
+   ['invalid-re-E-paren', '-E ")"', {IN=>''}, {EXIT=>1}],
+   ['invalid-re-E-star-paren', '-E ".*)"', {IN=>''}, {EXIT=>1}],
+   ['invalid-re-G-paren', '-G "\\)"', {EXIT=>2},
+    {ERR => "$prog: Unmatched ) or \\)\n"},
+   ],
+   ['invalid-re-G-star-paren', '-G "a.*\\)"', {EXIT=>2},
+    {ERR => "$prog: Unmatched ) or \\)\n"},
+   ],
+   ['invalid-re-P-paren', '-P ")"', {EXIT=>2},
+    {ERR => $ENV{PCRE_WORKS} == 1
+       ? "$prog: unmatched parentheses\n"
+       : $no_pcre
+    },
+   ],
+   ['invalid-re-P-star-paren', '-P "a.*)"', {EXIT=>2},
+    {ERR => $ENV{PCRE_WORKS} == 1
+       ? "$prog: unmatched parentheses\n"
+       : $no_pcre
+    },
+   ],
+
+   # Prior to grep-3.6, the name of the offending file was not printed.
+   ['backtracking-with-file', '-P "((a+)*)+$"', {EXIT=>2},
+    {IN=>{f=>"a"x20 ."b"}},
+    {ERR => $ENV{PCRE_WORKS} == 1
+       ? "$prog: f: exceeded PCRE's backtracking limit\n"
+       : $no_pcre
+    },
+   ],
+
+  );
+
+my $save_temps = $ENV{DEBUG};
+my $verbose = $ENV{VERBOSE};
+
+my $fail = run_tests ($program_name, $prog, \@Tests, $save_temps, $verbose);
+exit $fail;
diff --git a/src/grep/tests/fmbtest b/src/grep/tests/fmbtest
new file mode 100755
index 0000000..5fada35
--- /dev/null
+++ b/src/grep/tests/fmbtest
@@ -0,0 +1,126 @@
+#! /bin/sh
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+cz=cs_CZ.UTF-8
+
+# If cs_CZ.UTF-8 locale doesn't work, skip this test.
+LC_ALL=$cz locale -k LC_CTYPE 2>/dev/null | grep -q charmap.*UTF-8 \
+  || skip_ this system lacks the $cz locale
+
+# If matching is done in single-byte mode, skip this test too
+printf 'é\n' | LC_ALL=$cz grep -Eq '^[é]{2}$'
+case $? in
+  0) skip_ "built without multi-byte support";;
+  1) ;;
+  *) fail_ "unexpected exit status: $?";;
+esac
+
+failures=0
+
+cat > csinput <<EOF
+01 Žluťou�ká �íše
+ČíŠE 02
+03 Z �íší Čiší cosi
+04 Čí
+Å e 05
+06 ČČČČČČČíšČ�Š�íš
+07 ČČČ ČČČČíšČ�Š�íšEEEE
+�As 08
+09ÄŒapka
+10ČaSy se měn�
+Č�šE11
+ÄŒas12
+�Č�šE�13
+ŽČ�šE�14
+�Č�šEŽ15
+ŽČ�šEŽ16
+Č�šE�17
+Č�šEŽ18
+19�Č�še
+20ŽČ�še
+EOF
+cat > cspatfile <<EOF
+Č�šE
+ÄŒas
+EOF
+
+for mode in F G E; do
+
+test1=$(echo $(LC_ALL=$cz grep -${mode} -f cspatfile csinput |
+               tr -cs '0-9' '[ *]'))
+if test "$test1" != "11 12 13 14 15 16 17 18"; then
+  echo "Test #1 ${mode} failed: $test1"
+  failures=1
+fi
+
+test2=$(echo $(LC_ALL=$cz grep -${mode}i -f cspatfile csinput |
+               tr -cs '0-9' '[ *]'))
+if test "$test2" != "01 02 07 08 10 11 12 13 14 15 16 17 18 19 20"; then
+  echo "Test #2 ${mode} failed: $test2"
+  failures=1
+fi
+
+test3=$(echo $(LC_ALL=$cz grep -${mode}i -e 'Č�šE' -e 'Čas' csinput |
+               tr -cs '0-9' '[ *]'))
+if test "$test3" != "01 02 07 08 10 11 12 13 14 15 16 17 18 19 20"; then
+  echo "Test #3 ${mode} failed: $test3"
+  failures=1
+fi
+
+# Skip the next test - known to fail. TAA.
+#test4=$(echo $(LC_ALL=$cz; export LC_ALL
+#               grep -${mode}iw -f cspatfile csinput |
+#                 sed 's/[^0123456789]/ /g'))
+#if test "$test4" != "01 02 08 13 17 19"; then
+#  echo "Test #4 ${mode} failed: $test4"
+#  failures=1
+#fi
+
+# Test that --color=always does not depend on individual pattern order
+# within the pattern list, and that a longer match is preferred to a
+# shorter one starting at the same point.
+test6="$(echo 'Cosi tu Čiš�...' \
+  | LC_ALL=$cz grep --color=always -${mode}i -e '�iš' -e '�iší')"
+if echo "$test6" \
+  | LC_ALL=C grep -q 'Cosi tu .*\[.*m\(.\[K\)\?Čiš�.*\[.*m\(.\[K\)\?\.\.\.'; \
+then
+  :
+else
+  echo "Test #6 ${mode} failed: $test6"
+  failures=1
+fi
+
+# Test that --color=always does not depend on individual pattern order
+# within the pattern list, and that a longer match is preferred to a
+# shorter one starting at the same point.
+test7="$(echo 'Cosi tu Čiš�...' \
+  | LC_ALL=$cz grep --color=always -${mode}i -e '�iší' -e '�iš')"
+if echo "$test7" \
+  | LC_ALL=C grep -q 'Cosi tu .*\[.*m\(.\[K\)\?Čiš�.*\[.*m\(.\[K\)\?\.\.\.'; \
+then
+  :
+else
+  echo "Test #7 ${mode} failed: $test7"
+  failures=1
+fi
+
+done
+
+for mode in G E; do
+
+test8=$(echo $(LC_ALL=$cz grep -${mode}i -e 'Č.šE' -e 'Č[a-f]s' csinput |
+               tr -cs '0-9' '[ *]'))
+if test "$test8" != "01 02 07 08 10 11 12 13 14 15 16 17 18 19 20"; then
+  echo "Test #8 ${mode} failed: $test8"
+  failures=1
+fi
+
+done
+
+Exit $failures
diff --git a/src/grep/tests/foad1 b/src/grep/tests/foad1
new file mode 100755
index 0000000..588107d
--- /dev/null
+++ b/src/grep/tests/foad1
@@ -0,0 +1,211 @@
+#! /bin/sh
+# Test various combinations of command-line options.
+#
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+#
+# This set of tests was started by Julian Foad.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+failures=0
+
+# grep_test INPUT EXPECTED_OUTPUT PATTERN_AND_OPTIONS...
+# Run "grep" with the given INPUT, pattern and options, and check that
+# the output is EXPECTED_OUTPUT.  If not, print a message and set 'failures'.
+# "/" represents a newline within INPUT and EXPECTED_OUTPUT.
+grep_test ()
+{
+  INPUT="$1"
+  EXPECT="$2"
+  shift 2
+  OUTPUT=$(printf %s "$INPUT" | tr "/" "\n" | grep "$@" | tr "\n" "/")
+  if test "$OUTPUT" != "$EXPECT" || test "$VERBOSE" = "yes"; then
+    echo "Testing:  grep $@"
+    test "$LC_ALL" != C && test "$LC_ALL" != "" && echo "  LC_ALL: \"$LC_ALL\""
+    echo "  input:  \"$INPUT\""
+    echo "  output: \"$OUTPUT\""
+  fi
+  if test "$OUTPUT" != "$EXPECT"; then
+    echo "  expect: \"$EXPECT\""
+    echo "FAIL"
+    failures=1
+  fi
+}
+
+
+# Test "--only-matching" ("-o") option
+
+# "-o" with "-i" should output an exact copy of the matching input text.
+grep_test "WordA/wordB/WORDC/" "Word/word/WORD/" "word" -o -i
+grep_test "WordA/wordB/WORDC/" "Word/word/WORD/" "Word" -o -i
+grep_test "WordA/wordB/WORDC/" "Word/word/WORD/" "WORD" -o -i
+
+# Should display the line number (-n), octet offset (-b), or file name
+# (-H) of every match, not just of the first match on each input line.
+# Check it both with and without -i because of the separate code paths.
+# Also check what it does when lines of context are specified.
+grep_test "wA wB/wC/" "1:wA/1:wB/2:wC/" "w." -o -n
+grep_test "wA wB/wC/" "1:wA/1:wB/2:wC/" "w." -o -n -i
+grep_test "wA wB/wC/" "1:wA/1:wB/2:wC/" "w." -o -n -3 2>/dev/null
+grep_test "XwA YwB/ZwC/" "1:wA/5:wB/9:wC/" "w." -o -b
+grep_test "XwA YwB/ZwC/" "1:wA/5:wB/9:wC/" "w." -o -b -i
+grep_test "XwA YwB/ZwC/" "1:wA/5:wB/9:wC/" "w." -o -b -3 2>/dev/null
+grep_test "XwA YwB/ZwC/" "1:w/5:w/9:w/" "w" -F -o -b
+grep_test "XwA YwB/ZwC/" "1:w/5:w/9:w/" "w" -F -o -b -i
+grep_test "XwA YwB/ZwC/" "1:w/5:w/9:w/" "w" -F -o -b -3 2>/dev/null
+grep_test "wA wB/" "(standard input):wA/(standard input):wB/" "w." -o -H
+grep_test "wA wB/" "(standard input):wA/(standard input):wB/" "w." -o -H -i
+grep_test "wA wB/" "(standard input):wA/(standard input):wB/" "w." -o -H -3 2>/dev/null
+
+# Combination of -h and -H
+grep_test "wA wB/" "wA wB/" "w."
+grep_test "wA wB/" "wA wB/" "w." -h
+grep_test "wA wB/" "wA wB/" "w." -H -h
+grep_test "wA wB/" "(standard input):wA wB/" "w." -H
+grep_test "wA wB/" "(standard input):wA wB/" "w." -h -H
+
+# End of a previous match should not match a "start of ..." expression.
+grep_test "word_word/" "word_/" "^word_*" -o
+grep_test "wordword/" "word/" "\<word" -o
+
+
+# Test "--color" option
+
+CB=""
+CE=""
+
+# "--color" with "-i" should output an exact copy of the matching input text.
+grep_test "WordA/wordb/WORDC/" "${CB}Word${CE}A/${CB}word${CE}b/${CB}WORD${CE}C/" "word" --color=always -i
+grep_test "WordA/wordb/WORDC/" "${CB}Word${CE}A/${CB}word${CE}b/${CB}WORD${CE}C/" "Word" --color=always -i
+grep_test "WordA/wordb/WORDC/" "${CB}Word${CE}A/${CB}word${CE}b/${CB}WORD${CE}C/" "WORD" --color=always -i
+
+# End of a previous match should not match a "start of ..." expression.
+grep_test "word_word/" "${CB}word_${CE}word/" "^word_*" --color=always
+grep_test "wordword/" "${CB}word${CE}word/" "\<word" --color=always
+
+
+# Test combination of "-m" with "-A" and anchors.
+# Based on a report from Pavol Gono.
+grep_test "4/40/"  "4/40/"  "^4$" -m1 -A99
+grep_test "4/04/"  "4/04/"  "^4$" -m1 -A99
+grep_test "4/444/" "4/444/" "^4$" -m1 -A99
+grep_test "4/40/"  "4/40/"  "^4"  -m1 -A99
+grep_test "4/04/"  "4/04/"  "^4"  -m1 -A99
+grep_test "4/444/" "4/444/" "^4"  -m1 -A99
+grep_test "4/40/"  "4/40/"  "4$"  -m1 -A99
+grep_test "4/04/"  "4/04/"  "4$"  -m1 -A99
+grep_test "4/444/" "4/444/" "4$"  -m1 -A99
+
+
+# Test for "-F -w" bugs.  Thanks to Gordon Lack for these two.
+grep_test "A/CX/B/C/" "A/B/C/" -wF -e A -e B -e C
+grep_test "LIN7C 55327/" "" -wF -e 5327 -e 5532
+
+# Test for non-empty matches following empty ones.
+grep_test 'xyz/' 'y/' -o 'y*'
+grep_test 'xyz/' "x${CB}y${CE}z/" --color=always 'y*'
+
+# Test for increasing/decreasing-length word matches,
+# for independence from pattern order within the pattern list,
+# and for preferring the longest match at a given position.
+x0='a bb ccc dddd/'
+x1='dddd ccc bb a/'
+x2='bcd abcd abc bc bcd abc/'
+x3='bc abcd bc/'
+y0="a ${CB}bb${CE} ${CB}ccc${CE} dddd/"
+y1="dddd ${CB}ccc${CE} ${CB}bb${CE} a/"
+y2="bcd abcd abc ${CB}bc${CE} bcd abc/"
+y3="${CB}bc${CE} abcd ${CB}bc${CE}/"
+grep_test "$x0" "$y0" -E --color=always -e bb -e cc -e ccc
+grep_test "$x0" "$y0" -F --color=always -e bb -e cc -e ccc
+grep_test "$x0" "$y0" -E --color=always -e bb -e ccc -e cc
+grep_test "$x0" "$y0" -F --color=always -e bb -e ccc -e cc
+grep_test "$x0" "$y0" -E -w --color=always -e bb -e ccc
+grep_test "$x0" "$y0" -F -w --color=always -e bb -e ccc
+grep_test "$x0" "$y0" -E -w --color=always -e ccc -e bb
+grep_test "$x0" "$y0" -F -w --color=always -e ccc -e bb
+grep_test "$x1" "$y1" -E -w --color=always -e bb -e ccc
+grep_test "$x1" "$y1" -F -w --color=always -e bb -e ccc
+grep_test "$x1" "$y1" -E -w --color=always -e ccc -e bb
+grep_test "$x1" "$y1" -F -w --color=always -e ccc -e bb
+grep_test "$x2" "$y2" -E -w --color=always bc
+grep_test "$x2" "$y2" -F -w --color=always bc
+grep_test "$x3" "$y3" -E -w --color=always bc
+grep_test "$x3" "$y3" -F -w --color=always bc
+
+# Bug#25655
+grep_test .tar/ .tar/ -e '\.tar' -e '\.tbz'
+grep_test .tar/ .tar/ -o -e '\.tar' -e 'tar'
+grep_test '$*.[^\/' '$*.[^\/' -o -e '\$\*\.\[\^\\' -e abc
+grep_test '$*.[^\/(+?{|/' '$*.[^\/(+?{|/' -o -E \
+          -e '\$\*\.\[\^\\' -e '\(\+\?\{\|'
+
+# Skip the rest of the tests - known to fail. TAA.
+Exit $failures
+
+# The rest of this file is meant to be executed under this locale.
+LC_ALL=cs_CZ.UTF-8; export LC_ALL
+# If the UTF-8 locale doesn't work, skip these tests silently.
+locale -k LC_CTYPE 2>/dev/null | grep -q "charmap.*UTF-8" || Exit $failures
+
+# Test character class erroneously matching a '[' character.
+grep_test "[/" "" "[[:alpha:]]" -E
+
+for mode in F G E; do
+  # Hint:  pipe the output of these tests in
+  #        "| LESS= LESSCHARSET=ascii less".
+  # LETTER N WITH TILDE is U+00F1 and U+00D1.
+  # LETTER Y WITH DIAERESIS is U+00FF and U+0178.
+  grep_test 'añÿb/AÑŸB/' 'ñÿ/ÑŸ/' 'ñÿ' -o -i -$mode
+  grep_test 'añÿb/AÑŸB/' 'ñÿ/ÑŸ/' 'ÑŸ' -o -i -$mode
+  grep_test 'añÿb/AÑŸB/' "a${CB}ñÿ${CE}b/A${CB}ÑŸ${CE}B/" 'ñÿ' --color=always -i -$mode
+  grep_test 'añÿb/AÑŸB/' "a${CB}ñÿ${CE}b/A${CB}ÑŸ${CE}B/" 'ÑŸ' --color=always -i -$mode
+
+  # POSIX (about -i):  ... each character in the string is matched
+  # against the pattern, not only the character, but also its case
+  # counterpart (if any), shall be matched.
+  # The following were chosen because of their trickiness due to the
+  # differing UTF-8 octet length of their counterpart and to the
+  # non-reflexivity of their mapping.
+  # Beware of homographs!  Look carefully at the actual octets.
+
+  # lc(U+0130 LATIN CAPITAL LETTER I WITH DOT ABOVE) = U+0069 LATIN SMALL LETTER I
+  grep_test 'aÄ°b/' "a${CB}Ä°${CE}b/" 'i' --color=always -i -$mode
+  grep_test 'aib/' ''               'Ä°' --color=always -i -$mode
+  grep_test 'aÄ°b/' ''               'I' --color=always -i -$mode
+  # uc(U+0131 LATIN SMALL LETTER DOTLESS I)          = U+0049 LATIN CAPITAL LETTER I
+  grep_test 'aıb/' "a${CB}ı${CE}b/" 'I' --color=always -i -$mode
+  grep_test 'aIb/' ''               'ı' --color=always -i -$mode
+  grep_test 'aıb/' ''               'i' --color=always -i -$mode
+  # uc(U+017F LATIN SMALL LETTER LONG S)             = U+0053 LATIN CAPITAL LETTER S
+  grep_test 'aſb/' "a${CB}ſ${CE}b/" 'S' --color=always -i -$mode
+  grep_test 'aSb/' ''               'Å¿' --color=always -i -$mode
+  grep_test 'aſb/' ''               's' --color=always -i -$mode
+  # uc(U+1FBE GREEK PROSGEGRAMMENI)                  = U+0399 GREEK CAPITAL LETTER IOTA
+  grep_test 'aιb/' "a${CB}ι${CE}b/" 'Ι' --color=always -i -$mode
+  grep_test 'aΙb/' ''               'ι' --color=always -i -$mode
+  grep_test 'aιb/' ''               'ι' --color=always -i -$mode
+  # lc(U+2126 OHM SIGN)                              = U+03C9 GREEK SMALL LETTER OMEGA
+  grep_test 'aΩb/' "a${CB}Ω${CE}b/" 'ω' --color=always -i -$mode
+  grep_test 'aωb/' ''               'Ω' --color=always -i -$mode
+  grep_test 'aΩb/' ''               'Ω' --color=always -i -$mode
+  # lc(U+212A KELVIN SIGN)                           = U+006B LATIN SMALL LETTER K
+  grep_test 'aKb/' "a${CB}K${CE}b/" 'k' --color=always -i -$mode
+  grep_test 'akb/' ''               'K' --color=always -i -$mode
+  grep_test 'aKb/' ''               'K' --color=always -i -$mode
+  # lc(U+212B ANGSTROM SIGN)                         = U+00E5 LATIN SMALL LETTER A WITH RING ABOVE
+  grep_test 'aâ„«b/' "a${CB}â„«${CE}b/" 'Ã¥' --color=always -i -$mode
+  grep_test 'aåb/' ''               'Å' --color=always -i -$mode
+  grep_test 'aâ„«b/' ''               'Ã…' --color=always -i -$mode
+done
+
+
+# Any tests inserted right here will be performed under an UTF-8 locale.
+# Insert them before LC_ALL is set above to avoid this.
+# Leave this comment last.
+
+Exit $failures
diff --git a/src/grep/tests/get-mb-cur-max.c b/src/grep/tests/get-mb-cur-max.c
new file mode 100644
index 0000000..4b2e40e
--- /dev/null
+++ b/src/grep/tests/get-mb-cur-max.c
@@ -0,0 +1,36 @@
+/* Auxiliary program to detect support for a locale.
+   Copyright 2010-2021 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+#include <config.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "getprogname.h"
+
+int
+main (int argc, char **argv)
+{
+  if (1 < argc && setlocale (LC_ALL, argv[1]))
+    {
+      printf ("%d\n", (int) MB_CUR_MAX);
+      exit (EXIT_SUCCESS);
+    }
+
+  exit (EXIT_FAILURE);
+}
diff --git a/src/grep/tests/grep-dev-null b/src/grep/tests/grep-dev-null
new file mode 100755
index 0000000..49a9385
--- /dev/null
+++ b/src/grep/tests/grep-dev-null
@@ -0,0 +1,20 @@
+#!/bin/sh
+# Case-insensitive grep with a 0-size input file would fail in grep up to 2.6.3
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+
+LC_ALL=en_US.UTF-8
+export LC_ALL
+
+echo x | returns_ 1 grep -f /dev/null || fail=1
+echo x | returns_ 1 grep -if /dev/null || fail=1
+echo x | returns_ 1 grep -Ff /dev/null || fail=1
+echo x | returns_ 1 grep -Fif /dev/null || fail=1
+
+returns_ 1 grep -f /dev/null < /dev/null || fail=1
+returns_ 1 grep -if /dev/null < /dev/null || fail=1
+returns_ 1 grep -Ff /dev/null < /dev/null || fail=1
+returns_ 1 grep -Fif /dev/null < /dev/null || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/grep-dev-null-out b/src/grep/tests/grep-dev-null-out
new file mode 100755
index 0000000..397a3f1
--- /dev/null
+++ b/src/grep/tests/grep-dev-null-out
@@ -0,0 +1,13 @@
+#!/bin/sh
+# Outputting to /dev/null.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_timeout_
+
+${AWK-awk} 'BEGIN {while (1) print "x"}' </dev/null |
+  returns_ 124 timeout 10 grep x >/dev/null || fail=1
+
+echo abc | grep b >>/dev/null || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/grep-dir b/src/grep/tests/grep-dir
new file mode 100755
index 0000000..4947512
--- /dev/null
+++ b/src/grep/tests/grep-dir
@@ -0,0 +1,31 @@
+#!/bin/sh
+# Case-insensitive grep with a 0-size input file would fail in grep up to 2.6.3
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+mkdir a || framework_failure
+
+# Lower and upper bound of valid exit status for "grep -f DIR",
+# when reading from empty and nonempty files, respectively.
+if cat a >acopy 2>&1 && cmp a acopy; then
+  l=1 u=1 L=0 U=1
+else
+  l=2 u=127 L=2 U=127
+fi
+
+status_range ()
+{
+  status=$?
+  { test $1 -le $status && test $status -le $2; } || fail=1
+}
+
+echo x | grep -f a/; status_range $L $U
+echo x | grep -if a/; status_range $L $U
+echo x | grep -Ff a/; status_range $L $U
+echo x | grep -Fif a/; status_range $L $U
+
+grep -f a/ < /dev/null; status_range $l $u
+grep -if a/ < /dev/null; status_range $l $u
+grep -Ff a/ < /dev/null; status_range $l $u
+grep -Fif a/ < /dev/null; status_range $l $u
+
+Exit $fail
diff --git a/src/grep/tests/hash-collision-perf b/src/grep/tests/hash-collision-perf
new file mode 100755
index 0000000..898b496
--- /dev/null
+++ b/src/grep/tests/hash-collision-perf
@@ -0,0 +1,53 @@
+#!/bin/sh
+# Test for this performance regression:
+# grep-3.5 and 3.6 would take O(N^2) time for some sets of input regexps.
+
+# Copyright 2020-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+: > empty || framework_failure_
+
+# Construct a test case that consumes enough CPU time that we don't
+# have to worry about measurement noise. This first case is searching
+# for digits, which never exhibited a problem with hash collisions.
+n_pat=40000
+while :; do
+  seq $n_pat > in || framework_failure_
+  small_ms=$(LC_ALL=C user_time_ 1 grep --file=in empty) || fail=1
+  test $small_ms -ge 200 && break
+  n_pat=$(expr $n_pat '*' 2)
+done
+
+# Now, search for those same digits mapped to A-J.
+# With the PJW-based hash function, this became O(N^2).
+seq $n_pat | tr 0-9 A-J > in || framework_failure_
+large_ms=$(LC_ALL=C user_time_ 1 grep --file=in empty) || fail=1
+
+# Deliberately recording in an unused variable so it
+# shows up in set -x output, in case this test fails.
+ratio=$(expr "$large_ms" / "$small_ms")
+warn_ ratio=$ratio
+
+# The duration of the latter run must be no more than 10 times
+# that of the former.  Using recent versions prior to this fix,
+# this test would fail due to ratios > 800.  Using the fixed version,
+# it's common to see a ratio less than 1.
+returns_ 1 expr $small_ms '<' $large_ms / 10 || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/help-version b/src/grep/tests/help-version
new file mode 100755
index 0000000..44015ce
--- /dev/null
+++ b/src/grep/tests/help-version
@@ -0,0 +1,276 @@
+#!/bin/sh
+# Make sure all of these programs work properly
+# when invoked with --help or --version.
+
+# Copyright (C) 2000-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+# Terminate any background processes
+cleanup_() { kill $pid 2>/dev/null && wait $pid; }
+
+expected_failure_status_chroot=125
+expected_failure_status_env=125
+expected_failure_status_nice=125
+expected_failure_status_nohup=125
+expected_failure_status_stdbuf=125
+expected_failure_status_timeout=125
+expected_failure_status_printenv=2
+expected_failure_status_tty=3
+expected_failure_status_sort=2
+expected_failure_status_expr=3
+expected_failure_status_lbracket=2
+expected_failure_status_dir=2
+expected_failure_status_ls=2
+expected_failure_status_vdir=2
+
+expected_failure_status_cmp=2
+expected_failure_status_zcmp=2
+expected_failure_status_sdiff=2
+expected_failure_status_diff3=2
+expected_failure_status_diff=2
+expected_failure_status_zdiff=2
+expected_failure_status_zgrep=2
+expected_failure_status_zegrep=2
+expected_failure_status_zfgrep=2
+
+expected_failure_status_grep=2
+expected_failure_status_egrep=2
+expected_failure_status_fgrep=2
+
+test "$built_programs" \
+  || fail_ "built_programs not specified!?!"
+
+test "$VERSION" \
+  || fail_ "set envvar VERSION; it is required for a PATH sanity-check"
+
+# Extract version from --version output of the first program
+for i in $built_programs; do
+  v=$(env $i --version | sed -n '1s/.* //p;q')
+  break
+done
+
+# Ensure that it matches $VERSION.
+test "x$v" = "x$VERSION" \
+  || fail_ "--version-\$VERSION mismatch"
+
+for lang in C fr da; do
+  for i in $built_programs; do
+
+    # Skip 'test'; it doesn't accept --help or --version.
+    test $i = test && continue
+
+    # false fails even when invoked with --help or --version.
+    # true and false are tested with these options separately.
+    test $i = false || test $i = true && continue
+
+    # The just-built install executable is always named 'ginstall'.
+    test $i = install && i=ginstall
+
+    # Make sure they exit successfully, under normal conditions.
+    env $i --help    > h-$i     || fail=1
+    env $i --version >/dev/null || fail=1
+
+    # Make sure they mention the bug-reporting address in --help output.
+    grep "$PACKAGE_BUGREPORT" h-$i > /dev/null || fail=1
+    rm -f h-$i
+
+    # Make sure they fail upon 'disk full' error.
+    if test -w /dev/full && test -c /dev/full; then
+      test $i = [ && prog=lbracket || prog=$(echo $i|sed "s/$EXEEXT$//")
+      eval "expected=\$expected_failure_status_$prog"
+      test x$expected = x && expected=1
+
+      returns_ $expected env $i --help    >/dev/full 2>/dev/null &&
+      returns_ $expected env $i --version >/dev/full 2>/dev/null ||
+      {
+        fail=1
+        env $i --help >/dev/full 2>/dev/null
+        status=$?
+        echo "*** $i: bad exit status '$status' (expected $expected)," 1>&2
+        echo "  with --help or --version output redirected to /dev/full" 1>&2
+      }
+    fi
+  done
+done
+
+bigZ_in=bigZ-in.Z
+zin=zin.gz
+zin2=zin2.gz
+
+tmp=tmp-$$
+tmp_in=in-$$
+tmp_in2=in2-$$
+tmp_dir=dir-$$
+tmp_out=out-$$
+mkdir $tmp || fail=1
+cd $tmp || fail=1
+
+comm_setup () { args="$tmp_in $tmp_in"; }
+csplit_setup () { args="$tmp_in //"; }
+cut_setup () { args='-f 1'; }
+join_setup () { args="$tmp_in $tmp_in"; }
+tr_setup () { args='a a'; }
+
+chmod_setup () { args="a+x $tmp_in"; }
+# Punt on these.
+chgrp_setup () { args=--version; }
+chown_setup () { args=--version; }
+mkfifo_setup () { args=--version; }
+mknod_setup () { args=--version; }
+# Punt on uptime, since it fails (e.g., failing to get boot time)
+# on some systems, and we shouldn't let that stop 'make check'.
+uptime_setup () { args=--version; }
+
+# Create a file in the current directory, not in $TMPDIR.
+mktemp_setup () { args=mktemp.XXXX; }
+
+cmp_setup () { args="$tmp_in $tmp_in2"; }
+
+# Tell dd not to print the line with transfer rate and total.
+# The transfer rate would vary between runs.
+dd_setup () { args=status=noxfer; }
+
+zdiff_setup () { args="$zin $zin2"; }
+zcmp_setup () { args="$zin $zin2"; }
+zcat_setup () { args=$zin; }
+gunzip_setup () { args=$zin; }
+zmore_setup () { args=$zin; }
+zless_setup () { args=$zin; }
+znew_setup () { args=$bigZ_in; }
+zforce_setup () { args=$zin; }
+zgrep_setup () { args="z $zin"; }
+zegrep_setup () { args="z $zin"; }
+zfgrep_setup () { args="z $zin"; }
+gzexe_setup () { args=$tmp_in; }
+
+# We know that $tmp_in contains a "0"
+grep_setup () { args="0 $tmp_in"; }
+egrep_setup () { args="0 $tmp_in"; }
+fgrep_setup () { args="0 $tmp_in"; }
+
+diff_setup () { args="$tmp_in $tmp_in2"; }
+sdiff_setup () { args="$tmp_in $tmp_in2"; }
+diff3_setup () { args="$tmp_in $tmp_in2 $tmp_in2"; }
+cp_setup () { args="$tmp_in $tmp_in2"; }
+ln_setup () { args="$tmp_in ln-target"; }
+ginstall_setup () { args="$tmp_in $tmp_in2"; }
+mv_setup () { args="$tmp_in $tmp_in2"; }
+mkdir_setup () { args=$tmp_dir/subdir; }
+realpath_setup () { args=$tmp_in; }
+rmdir_setup () { args=$tmp_dir; }
+rm_setup () { args=$tmp_in; }
+shred_setup () { args=$tmp_in; }
+touch_setup () { args=$tmp_in2; }
+truncate_setup () { args="--reference=$tmp_in $tmp_in2"; }
+
+mkid_setup () { printf 'f(){}\ntypedef int t;\n' > f.c; args=. ; }
+lid_setup () { args=; }
+fid_setup () { args=f.c; }
+fnid_setup () { args=; }
+xtokid_setup () { args=; }
+aid_setup () { args=f; }
+eid_setup () { args=--version; }
+gid_setup () { args=f; }
+defid_setup () { args=t; }
+
+basename_setup () { args=$tmp_in; }
+dirname_setup () { args=$tmp_in; }
+expr_setup () { args=foo; }
+
+# Punt, in case GNU 'id' hasn't been installed yet.
+groups_setup () { args=--version; }
+
+pathchk_setup () { args=$tmp_in; }
+yes_setup () { args=--version; }
+logname_setup () { args=--version; }
+nohup_setup () { args=--version; }
+printf_setup () { args=foo; }
+seq_setup () { args=10; }
+sleep_setup () { args=0; }
+stdbuf_setup () { args="-oL true"; }
+timeout_setup () { args=--version; }
+
+# I'd rather not run sync, since it spins up disks that I've
+# deliberately caused to spin down (but not unmounted).
+sync_setup () { args=--version; }
+
+test_setup () { args=foo; }
+
+# This is necessary in the unusual event that there is
+# no valid entry in /etc/mtab.
+df_setup () { args=/; }
+
+# This is necessary in the unusual event that getpwuid (getuid ()) fails.
+id_setup () { args=-u; }
+
+# Use env to avoid invoking built-in sleep of Solaris 11's /bin/sh.
+kill_setup () {
+  external=env
+  $external sleep 10m & pid=$!
+  args=$pid
+}
+
+link_setup () { args="$tmp_in link-target"; }
+unlink_setup () { args=$tmp_in; }
+
+readlink_setup () {
+  ln -s . slink
+  args=slink;
+}
+
+stat_setup () { args=$tmp_in; }
+unlink_setup () { args=$tmp_in; }
+lbracket_setup () { args=": ]"; }
+
+parted_setup () { args="-s $tmp_in mklabel gpt"
+  dd if=/dev/null of=$tmp_in seek=2000; }
+
+# Ensure that each program "works" (exits successfully) when doing
+# something more than --help or --version.
+for i in $built_programs; do
+  # Skip these.
+  case $i in chroot|stty|tty|false|chcon|runcon|coreutils) continue;; esac
+
+  rm -rf $tmp_in $tmp_in2 $tmp_dir $tmp_out $bigZ_in $zin $zin2
+  echo z |gzip > $zin
+  cp $zin $zin2
+  cp $zin $bigZ_in
+
+  # This is sort of kludgey: use numbers so this is valid input for factor,
+  # and two tokens so it's valid input for tsort.
+  echo 2147483647 0 > $tmp_in
+  # Make $tmp_in2 identical. Then, using $tmp_in and $tmp_in2 as arguments
+  # to the likes of cmp and diff makes them exit successfully.
+  cp $tmp_in $tmp_in2
+  mkdir $tmp_dir
+  # echo ================== $i
+  test $i = [ && prog=lbracket || prog=$(echo $i|sed "s/$EXEEXT$//")
+  if type ${prog}_setup > /dev/null 2>&1; then
+    ${prog}_setup
+  else
+    args=
+  fi
+  if env $i $args < $tmp_in > $tmp_out; then
+    : # ok
+  else
+    echo FAIL: $i
+    fail=1
+  fi
+  rm -rf $tmp_in $tmp_in2 $tmp_out $tmp_dir
+done
+
+Exit $fail
diff --git a/src/grep/tests/high-bit-range b/src/grep/tests/high-bit-range
new file mode 100755
index 0000000..38dff54
--- /dev/null
+++ b/src/grep/tests/high-bit-range
@@ -0,0 +1,28 @@
+#!/bin/sh
+# Exercise high-bit-set unibyte-in-[...]-range bug.
+
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+printf '\201\n' > in || framework_failure_
+grep -a "$(printf '[\201]')" in > out || fail=1
+
+compare out in || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/in-eq-out-infloop b/src/grep/tests/in-eq-out-infloop
new file mode 100755
index 0000000..11ba904
--- /dev/null
+++ b/src/grep/tests/in-eq-out-infloop
@@ -0,0 +1,41 @@
+#!/bin/sh
+# Demonstrate the disk-filling infloop when redirecting to an input file.
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_timeout_
+
+# Use an input file large enough that the problem is reproducible in spite
+# of buffering effects.  Just larger than 256KB should be adequate.
+v=$(printf %063d 0)'
+'
+# 64 * 2^12 = 256k
+for i in 1 2 3 4 5 6 7 8 9 10 11 12; do
+  v="$v$v"
+done
+
+echo "$v" > out || framework_failure_
+
+for arg in out - ''; do
+  # Accommodate both 'out' and '(standard input)', as well as
+  # the multi-byte quoting we see on OS/X-based systems.
+  echo grep: ...: input file is also the output > err.exp || framework_failure_
+
+  # Require an exit status of 2.
+  # grep-2.8 and earlier would infloop with $arg = out.
+  # grep-2.10 and earlier would infloop with $arg = - or $arg = ''.
+  timeout 10 grep 0 $arg < out >> out 2> err; st=$?; test $st = 2 || fail=1
+  sed 's/grep: .*: /grep: ...: /' err > k && mv k err
+  # Normalize the diagnostic prefix from e.g., "/mnt/dir/grep: " to "grep: "
+  sed 's/^[^:]*: /grep: /' err > k && mv k err
+  compare err.exp err || fail=1
+
+  # But with each of the following options it must not exit-2.
+  for i in -q -m1 -l -L; do
+    timeout 10 grep $i 0 $arg < out >> out 2> err; st=$?
+    test $st = 2 && fail=1
+  done
+
+  timeout 10 grep -2 0 $arg < out >> out 2> err; st=$?
+  test $st = 2 || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/include-exclude b/src/grep/tests/include-exclude
new file mode 100755
index 0000000..c3d22a1
--- /dev/null
+++ b/src/grep/tests/include-exclude
@@ -0,0 +1,76 @@
+#!/bin/sh
+# Use of any --include or --exclude* option would segfault in 2.6 and 2.6.1
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+mkdir -p x/dir || framework_failure_
+echo aaa > x/a || framework_failure_
+echo bbb > x/b || framework_failure_
+echo ddd > x/dir/d || framework_failure_
+
+printf '%s\n' x/b:bbb x/dir/d:ddd > exp-not-a   || framework_failure_
+printf '%s\n'         x/dir/d:ddd > exp-not-ab  || framework_failure_
+printf '%s\n' x/a:aaa x/b:bbb     > exp-not-d   || framework_failure_
+printf '%s\n' x/a:aaa x/b:bbb     > exp-not-dir || framework_failure_
+printf '%s\n' x/a:aaa             > exp-a       || framework_failure_
+printf '%s\n' a:aaa               > exp-aa      || framework_failure_
+printf '%s\n' aaa                 > exp-aaa     || framework_failure_
+printf '%s\n' ./x/a ./x/b ./x/dir/d | sort > exp-dotnames || framework_failure_
+
+grep -r --exclude='a*'    . x > out || fail=1
+sort out > k && mv k out
+compare exp-not-a out || fail=1
+
+grep -r --exclude='Rumpelstiltskin' --include='a*' --exclude='a*' . x > out ||
+  fail=1
+sort out > k && mv k out
+compare exp-not-a out || fail=1
+
+grep -r --exclude='[ab]'  . x > out || fail=1
+sort out > k && mv k out
+compare exp-not-ab out || fail=1
+
+grep -r --exclude='*d'    . x > out || fail=1
+sort out > k && mv k out
+compare exp-not-d out || fail=1
+
+grep -r --exclude-dir=dir . x > out || fail=1
+sort out > k && mv k out
+compare exp-not-dir out || fail=1
+
+grep -r --exclude-dir=dir/ . x > out || fail=1
+sort out > k && mv k out
+compare exp-not-dir out || fail=1
+
+# Test with a non-glob.
+grep -r --include=a    . x > out || fail=1
+# no need to sort
+compare exp-a out || fail=1
+
+# Also test --include with a "glob".
+grep -r --include='a*'    . x > out || fail=1
+# no need to sort
+compare exp-a out || fail=1
+
+# --include (without --recursive) uses different code
+grep --directories=skip --include=x/a --exclude-dir=dir '^aaa$' x/* > out \
+    || fail=1
+compare exp-a out || fail=1
+
+(cd x && grep -r --exclude-dir=. '^aaa$') > out || fail=1
+compare exp-aa out || fail=1
+
+grep --exclude=- '^aaa$' - < x/a > out || fail=1
+compare exp-aaa out || fail=1
+
+for exclude in 'x' 'x*'; do
+    grep -rl --exclude-dir="$exclude" . x > out
+    test $? -eq 1 || fail=1
+    compare /dev/null out || fail=1
+done
+
+for exclude in 'x' 'x*' './x' './x*'; do
+    grep -rl --exclude-dir="$exclude" . ./x | sort > out || fail=1
+    compare /dev/null out || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/inconsistent-range b/src/grep/tests/inconsistent-range
new file mode 100755
index 0000000..e28acde
--- /dev/null
+++ b/src/grep/tests/inconsistent-range
@@ -0,0 +1,17 @@
+#!/bin/sh
+# This would fail for grep-2.6
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+printf '00a\n00g\n00z\n00A\n00G\n00Z\n'      > in || framework_failure_
+
+fail=0
+
+for LOC in en_US.UTF-8 en_US zh_CN $LOCALE_FR_UTF8 C; do
+  out1=out1-$LOC
+  LC_ALL=$LOC grep -E '(.)\1[A-Z]' in > $out1 || fail=1
+  out2=out2-$LOC
+  LC_ALL=$LOC grep -E '[A-Z]' in > $out2 || fail=1
+  compare $out1 $out2 || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/init.cfg b/src/grep/tests/init.cfg
new file mode 100644
index 0000000..72cab20
--- /dev/null
+++ b/src/grep/tests/init.cfg
@@ -0,0 +1,220 @@
+# This file is sourced by init.sh, *before* its initialization.
+
+# This goes hand in hand with the "9>&2;" in tests/Makefile.am's
+# TESTS_ENVIRONMENT definition.
+stderr_fileno_=9
+
+# Map settings of "none" to the empty string.
+test _"$LOCALE_FR" = _none && LOCALE_FR=
+test _"$LOCALE_FR_UTF8" = _none && LOCALE_FR_UTF8=
+
+# Unset key environment variables.
+if (FOO=FOO; unset FOO) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+# Derive this list by searching for string literals as the first
+# argument to getenv:
+# git grep getenv|perl -nle '/\bgetenv *\("(.+?)"\)/ and print $1'|sort -u grep
+vars_='
+GREP_COLOR
+GREP_COLORS
+TERM
+'
+envvar_check_fail=0
+for v_ in $vars_
+do
+  $as_unset $v_
+  if eval test \"\${$v_+set}\" = set; then
+    echo "$0: the $v_ environment variable is set --" \
+      ' unset it and rerun this test' >&2
+    envvar_check_fail=1
+  fi
+done
+
+test "$envvar_check_fail" = 1 && fail_ "failed to unset the above envvars"
+
+require_timeout_()
+{
+  ( timeout 10s true ) > /dev/null 2>&1 \
+    || skip_ your system lacks the timeout program
+  returns_ 1 timeout 10s false \
+    || skip_ your system has a non-GNU timeout program
+  returns_ 124 timeout 0.01 sleep 0.02 \
+    || skip_ "'timeout 0.01 sleep 0.02' did not time out"
+}
+
+require_pcre_()
+{
+  echo . | grep -P . 2>err || {
+    test $? -eq 1 && fail_ PCRE available, but does not work.
+    skip_ no PCRE support
+  }
+  compare /dev/null err || fail_ PCRE available, but stderr not empty.
+}
+
+# Some tests would fail without this particular locale.
+# If the locale is not available, just skip the test.
+require_en_utf8_locale_()
+{
+  path_prepend_ .
+  case $(get-mb-cur-max en_US.UTF-8) in
+    [3456]) ;;
+    *) skip_ 'en_US.UTF-8 locale not found' ;;
+  esac
+}
+
+require_tr_utf8_locale_()
+{
+  path_prepend_ .
+  case $(get-mb-cur-max tr_TR.UTF-8) in
+    [3456]) ;;
+    *) skip_ 'tr_TR.UTF-8 locale not found' ;;
+  esac
+}
+
+require_ru_RU_koi8_r()
+{
+  path_prepend_ .
+  case $(get-mb-cur-max ru_RU.KOI8-R) in
+    1) ;;
+    *) skip_ 'ru_RU.KOI8-R locale not found' ;;
+  esac
+}
+
+require_compiled_in_MB_support()
+{
+  require_en_utf8_locale_
+  printf 'é' | LC_ALL=en_US.UTF-8 grep '[[:lower:]]' \
+    || skip_ this test requires MBS support
+}
+
+require_unibyte_locale()
+{
+  path_prepend_ .
+  for loc in C en_US; do
+    for encoding in '' .iso88591 .iso885915 .ISO8859-1 .ISO8859-15; do
+      locale=$loc$encoding
+      MB_CUR_MAX=$(get-mb-cur-max $locale 2>/dev/null) &&
+        test "$MB_CUR_MAX" -eq 1 &&
+        LC_ALL=$locale &&
+        export LC_ALL &&
+        return
+    done
+  done
+  skip_ 'no unibyte locale found'
+}
+
+# Define hi_res_time_ to a function that prints the current time
+# as a floating point number with greater than 1-second resolution.
+# Otherwise, skip the requiring test.
+require_hi_res_time_()
+{
+  local cmd
+  for cmd in 'date +%s.%N' \
+          'perl -le "use Time::HiRes qw(time); print scalar time()"'; do
+      case $($cmd) in
+          *.[0-9]*) eval 'hi_res_time_() { '"$cmd"'; }'; break;;
+      esac
+  done
+  type hi_res_time_ || skip_ no high-resolution timer support
+}
+
+require_JP_EUC_locale_()
+{
+  local locale=ja_JP.eucJP
+  path_prepend_ .
+  case $(get-mb-cur-max $locale) in
+    [23])
+        LC_ALL=$locale &&
+        export LC_ALL &&
+        return
+        ;;
+    *) ;;
+  esac
+
+  skip_ "$locale locale not found"
+}
+
+expensive_()
+{
+  if test "$RUN_EXPENSIVE_TESTS" != yes; then
+    skip_ 'expensive: disabled by default
+This test is relatively expensive, so it is disabled by default.
+To run it anyway, rerun make check with the RUN_EXPENSIVE_TESTS
+environment variable set to yes.  E.g.,
+
+  env RUN_EXPENSIVE_TESTS=yes make check
+
+or use the shortcut target of the toplevel Makefile,
+
+  make check-expensive
+'
+  fi
+}
+
+# Like printf with a single argument, but that argument must be a
+# sequence of four-byte strings \xHH where each H is a hexadecimal byte.
+hex_printf_()
+{
+  local octal_fmt=$(printf '\\%o' \
+    $(printf '%s\n' "$1" \
+      | sed 's,\\x\([0-9abcdefABCDEF][0-9abcdefABCDEF]\), 0x\1,g'))
+  printf "$octal_fmt"
+}
+
+# Wrap tr so that it always runs in the C locale.
+# Otherwise, in a multibyte locale, GNU tr (which is not multibyte-aware
+# as of 2014-11-08), would work differently than others.  For example,
+# this command, which was written with unibyte GNU tr in mind,
+#   LC_ALL=ja_JP.eucJP tr AB '\244\263'
+# would act like this with the multibyte tr from HP-UX and Solaris:
+#   LC_ALL=ja_JP.eucJP tr A  '\244\263'
+tr() { LC_ALL=C env -- tr "$@"; }
+
+# Usage: user_time_ EXPECTED_EXIT_STATUS CMD ...
+# If CMD ... exits with the expected exit status, print the elapsed
+# child "user" time (not "system" time) in milliseconds and return 0.
+# Otherwise, diagnose the exit status mismatch and return nonzero.
+user_time_()
+{
+  $PERL -le '
+    my $expected_exit_status = $ARGV[0];
+    shift @ARGV;
+
+    system (@ARGV);
+    my ($user, $system, $child_user, $child_system) = times;
+
+    my $me = q('"$ME_"');
+    $? == -1
+      and die qq($me: failed to exec ") . join (" ", @ARGV) . qq(": $!\n);
+    my $rc = $?;
+    my $sig = ($rc & 127);
+    $sig and die "$me: child died with signal $sig\n";
+    $rc >>= 8;
+    $rc == $expected_exit_status
+      or die "$me: bad exit status: expected $expected_exit_status; got $rc\n";
+
+    # Print milliseconds of child user time.
+    $child_user *= 1000;
+    print int ($child_user + 0.5)' "$@"
+}
+
+# yes is not portable, fake it with $AWK
+yes() { line=${*-y} ${AWK-awk} 'BEGIN{for (;;) print ENVIRON["line"]}'; }
+
+# Some systems lack seq.
+# A limited replacement for seq: handle 1 or 2 args; increment must be 1
+if ! type seq > /dev/null 2>&1; then
+  seq()
+  {
+    case $# in
+      1) start=1  final=$1;;
+      2) start=$1 final=$2;;
+      *) echo you lose 1>&2; exit 1;;
+    esac
+    awk 'BEGIN{for(i='$start';i<='$final';i++) print i}' < /dev/null
+  }
+fi
diff --git a/src/grep/tests/init.sh b/src/grep/tests/init.sh
new file mode 100644
index 0000000..9ef8348
--- /dev/null
+++ b/src/grep/tests/init.sh
@@ -0,0 +1,683 @@
+# source this file; set up for tests
+
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Using this file in a test
+# =========================
+#
+# The typical skeleton of a test looks like this:
+#
+#   #!/bin/sh
+#   . "${srcdir=.}/init.sh"; path_prepend_ .
+#   Execute some commands.
+#   Note that these commands are executed in a subdirectory, therefore you
+#   need to prepend "../" to relative filenames in the build directory.
+#   Note that the "path_prepend_ ." is useful only if the body of your
+#   test invokes programs residing in the initial directory.
+#   For example, if the programs you want to test are in src/, and this test
+#   script is named tests/test-1, then you would use "path_prepend_ ../src",
+#   or perhaps export PATH='$(abs_top_builddir)/src$(PATH_SEPARATOR)'"$$PATH"
+#   to all tests via automake's TESTS_ENVIRONMENT.
+#   Set the exit code 0 for success, 77 for skipped, or 1 or other for failure.
+#   Use the skip_ and fail_ functions to print a diagnostic and then exit
+#   with the corresponding exit code.
+#   Exit $?
+
+# Executing a test that uses this file
+# ====================================
+#
+# Running a single test:
+#   $ make check TESTS=test-foo.sh
+#
+# Running a single test, with verbose output:
+#   $ make check TESTS=test-foo.sh VERBOSE=yes
+#
+# Running a single test, keeping the temporary directory:
+#   $ make check TESTS=test-foo.sh KEEP=yes
+#
+# Running a single test, with single-stepping:
+#   1. Go into a sub-shell:
+#   $ bash
+#   2. Set relevant environment variables from TESTS_ENVIRONMENT in the
+#      Makefile:
+#   $ export srcdir=../../tests # this is an example
+#   3. Execute the commands from the test, copy&pasting them one by one:
+#   $ . "$srcdir/init.sh"; path_prepend_ .
+#   ...
+#   4. Finally
+#   $ exit
+
+# =============================================================================
+# Elementary diagnostics
+
+ME_=`expr "./$0" : '.*/\(.*\)$'`
+
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
+  # contains only /bin. Note that ksh looks also at the FPATH variable,
+  # so we have to set that as well for the test.
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+           || PATH_SEPARATOR=';'
+       }
+fi
+
+# We use a trap below for cleanup.  This requires us to go through
+# hoops to get the right exit status transported through the handler.
+# So use 'Exit STATUS' instead of 'exit STATUS' inside of the tests.
+# Turn off errexit here so that we don't trip the bug with OSF1/Tru64
+# sh inside this function.
+Exit () { set +e; (exit $1); exit $1; }
+
+# Print warnings (e.g., about skipped and failed tests) to this file number.
+# Override by defining to say, 9, in init.cfg, and putting say,
+#   export ...ENVVAR_SETTINGS...; $(SHELL) 9>&2
+# in the definition of TESTS_ENVIRONMENT in your tests/Makefile.am file.
+# This is useful when using automake's parallel tests mode, to print
+# the reason for skip/failure to console, rather than to the .log files.
+: ${stderr_fileno_=2}
+
+# Note that correct expansion of "$*" depends on IFS starting with ' '.
+# Always write the full diagnostic to stderr.
+# When stderr_fileno_ is not 2, also emit the first line of the
+# diagnostic to that file descriptor.
+warn_ ()
+{
+  # If IFS does not start with ' ', set it and emit the warning in a subshell.
+  case $IFS in
+    ' '*) printf '%s\n' "$*" >&2
+          test $stderr_fileno_ = 2 \
+            || { printf '%s\n' "$*" | sed 1q >&$stderr_fileno_ ; } ;;
+    *) (IFS=' '; warn_ "$@");;
+  esac
+}
+fail_ () { warn_ "$ME_: failed test: $@"; Exit 1; }
+skip_ () { warn_ "$ME_: skipped test: $@"; Exit 77; }
+fatal_ () { warn_ "$ME_: hard error: $@"; Exit 99; }
+framework_failure_ () { warn_ "$ME_: set-up failure: $@"; Exit 99; }
+
+# =============================================================================
+# Ensure the shell supports modern syntax.
+
+# Sanitize this shell to POSIX mode, if possible.
+DUALCASE=1; export DUALCASE
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in
+    *posix*) set -o posix ;;
+  esac
+fi
+
+# We require $(...) support unconditionally.
+# We require that the printf built-in work correctly regarding octal escapes;
+# this eliminates /bin/sh on AIX 7.2.
+# We require non-surprising "local" semantics (this eliminates dash).
+# This takes the admittedly draconian step of eliminating dash, because the
+# assignment tab=$(printf '\t') works fine, yet preceding it with "local "
+# transforms it into an assignment that sets the variable to the empty string.
+# That is too counter-intuitive, and can lead to subtle run-time malfunction.
+# The example below is less subtle in that with dash, it evokes the run-time
+# exception "dash: 1: local: 1: bad variable name".
+# We require a few additional shell features only when $EXEEXT is nonempty,
+# in order to support automatic $EXEEXT emulation:
+# - hyphen-containing alias names
+# - we prefer to use ${var#...} substitution, rather than having
+#   to work around lack of support for that feature.
+# The following code attempts to find a shell with support for these features.
+# If the current shell passes the test, we're done.  Otherwise, test other
+# shells until we find one that passes.  If one is found, re-exec it.
+# If no acceptable shell is found, skip the current test.
+#
+# The "...set -x; P=1 true 2>err..." test is to disqualify any shell that
+# emits "P=1" into err, as /bin/sh from SunOS 5.11 and OpenBSD 4.7 do.
+#
+# Use "9" to indicate success (rather than 0), in case some shell acts
+# like Solaris 10's /bin/sh but exits successfully instead of with status 2.
+
+# Eval this code in a subshell to determine a shell's suitability.
+# 10 - passes all tests; ok to use
+#  9 - ok, but enabling "set -x" corrupts app stderr; prefer higher score
+#  ? - not ok
+gl_shell_test_script_='
+test $(echo y) = y || exit 1
+LC_ALL=en_US.UTF-8 printf "\\351" 2>/dev/null \
+  | LC_ALL=C tr "\\351" x | LC_ALL=C grep "^x$" > /dev/null \
+  || exit 1
+printf "\\351" 2>/dev/null \
+  | LC_ALL=C tr "\\351" x | LC_ALL=C grep "^x$" > /dev/null \
+  || exit 1
+f_local_() { local v=1; }; f_local_ || exit 1
+f_dash_local_fail_() { local t=$(printf " 1"); }; f_dash_local_fail_
+score_=10
+if test "$VERBOSE" = yes; then
+  test -n "$( (exec 3>&1; set -x; P=1 true 2>&3) 2> /dev/null)" && score_=9
+fi
+test -z "$EXEEXT" && exit $score_
+shopt -s expand_aliases
+alias a-b="echo zoo"
+v=abx
+     test ${v%x} = ab \
+  && test ${v#a} = bx \
+  && test $(a-b) = zoo \
+  && exit $score_
+'
+
+if test "x$1" = "x--no-reexec"; then
+  shift
+else
+  # Assume a working shell.  Export to subshells (setup_ needs this).
+  gl_set_x_corrupts_stderr_=false
+  export gl_set_x_corrupts_stderr_
+
+  # Record the first marginally acceptable shell.
+  marginal_=
+
+  # Search for a shell that meets our requirements.
+  for re_shell_ in __current__ "${CONFIG_SHELL:-no_shell}" \
+      /bin/sh bash dash zsh pdksh fail
+  do
+    test "$re_shell_" = no_shell && continue
+
+    # If we've made it all the way to the sentinel, "fail" without
+    # finding even a marginal shell, skip this test.
+    if test "$re_shell_" = fail; then
+      test -z "$marginal_" && skip_ failed to find an adequate shell
+      re_shell_=$marginal_
+      break
+    fi
+
+    # When testing the current shell, simply "eval" the test code.
+    # Otherwise, run it via $re_shell_ -c ...
+    if test "$re_shell_" = __current__; then
+      # 'eval'ing this code makes Solaris 10's /bin/sh exit with
+      # $? set to 2.  It does not evaluate any of the code after the
+      # "unexpected" first '('.  Thus, we must run it in a subshell.
+      ( eval "$gl_shell_test_script_" ) > /dev/null 2>&1
+    else
+      "$re_shell_" -c "$gl_shell_test_script_" 2>/dev/null
+    fi
+
+    st_=$?
+
+    # $re_shell_ works just fine.  Use it.
+    if test $st_ = 10; then
+      gl_set_x_corrupts_stderr_=false
+      break
+    fi
+
+    # If this is our first marginally acceptable shell, remember it.
+    if test "$st_:$marginal_" = 9: ; then
+      marginal_="$re_shell_"
+      gl_set_x_corrupts_stderr_=true
+    fi
+  done
+
+  if test "$re_shell_" != __current__; then
+    # Found a usable shell.  Preserve -v and -x.
+    case $- in
+      *v*x* | *x*v*) opts_=-vx ;;
+      *v*) opts_=-v ;;
+      *x*) opts_=-x ;;
+      *) opts_= ;;
+    esac
+    re_shell=$re_shell_
+    export re_shell
+    exec "$re_shell_" $opts_ "$0" --no-reexec "$@"
+    echo "$ME_: exec failed" 1>&2
+    exit 127
+  fi
+fi
+
+# =============================================================================
+# Ensure the shell behaves reasonably.
+
+# If this is bash, turn off all aliases.
+test -n "$BASH_VERSION" && unalias -a
+
+# Note that when supporting $EXEEXT (transparently mapping from PROG_NAME to
+# PROG_NAME.exe), we want to support hyphen-containing names like test-acos.
+# That is part of the shell-selection test above.  Why use aliases rather
+# than functions?  Because support for hyphen-containing aliases is more
+# widespread than that for hyphen-containing function names.
+test -n "$EXEEXT" && test -n "$BASH_VERSION" && shopt -s expand_aliases
+
+# =============================================================================
+# Creating a temporary directory (needed by the core test framework)
+
+# Create a temporary directory, much like mktemp -d does.
+# Written by Jim Meyering.
+#
+# Usage: mktempd_ /tmp phoey.XXXXXXXXXX
+#
+# First, try to use the mktemp program.
+# Failing that, we'll roll our own mktemp-like function:
+#  - try to get random bytes from /dev/urandom
+#  - failing that, generate output from a combination of quickly-varying
+#      sources and gzip.  Ignore non-varying gzip header, and extract
+#      "random" bits from there.
+#  - given those bits, map to file-name bytes using tr, and try to create
+#      the desired directory.
+#  - make only $MAX_TRIES_ attempts
+
+# Helper function.  Print $N pseudo-random bytes from a-zA-Z0-9.
+rand_bytes_ ()
+{
+  n_=$1
+
+  # Maybe try openssl rand -base64 $n_prime_|tr '+/=\012' abcd first?
+  # But if they have openssl, they probably have mktemp, too.
+
+  chars_=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
+  dev_rand_=/dev/urandom
+  if test -r "$dev_rand_"; then
+    # Note: 256-length($chars_) == 194; 3 copies of $chars_ is 186 + 8 = 194.
+    dd ibs=$n_ count=1 if=$dev_rand_ 2>/dev/null \
+      | LC_ALL=C tr -c $chars_ 01234567$chars_$chars_$chars_
+    return
+  fi
+
+  n_plus_50_=`expr $n_ + 50`
+  cmds_='date; date +%N; free; who -a; w; ps auxww; ps -ef'
+  data_=` (eval "$cmds_") 2>&1 | gzip `
+
+  # Ensure that $data_ has length at least 50+$n_
+  while :; do
+    len_=`echo "$data_"|wc -c`
+    test $n_plus_50_ -le $len_ && break;
+    data_=` (echo "$data_"; eval "$cmds_") 2>&1 | gzip `
+  done
+
+  echo "$data_" \
+    | dd bs=1 skip=50 count=$n_ 2>/dev/null \
+    | LC_ALL=C tr -c $chars_ 01234567$chars_$chars_$chars_
+}
+
+mktempd_ ()
+{
+  case $# in
+  2);;
+  *) fail_ "Usage: mktempd_ DIR TEMPLATE";;
+  esac
+
+  destdir_=$1
+  template_=$2
+
+  MAX_TRIES_=4
+
+  # Disallow any trailing slash on specified destdir:
+  # it would subvert the post-mktemp "case"-based destdir test.
+  case $destdir_ in
+  / | //) destdir_slash_=$destdir;;
+  */) fail_ "invalid destination dir: remove trailing slash(es)";;
+  *) destdir_slash_=$destdir_/;;
+  esac
+
+  case $template_ in
+  *XXXX) ;;
+  *) fail_ \
+       "invalid template: $template_ (must have a suffix of at least 4 X's)";;
+  esac
+
+  # First, try to use mktemp.
+  d=`unset TMPDIR; { mktemp -d -t -p "$destdir_" "$template_"; } 2>/dev/null` &&
+
+  # The resulting name must be in the specified directory.
+  case $d in "$destdir_slash_"*) :;; *) false;; esac &&
+
+  # It must have created the directory.
+  test -d "$d" &&
+
+  # It must have 0700 permissions.  Handle sticky "S" bits.
+  perms=`ls -dgo "$d" 2>/dev/null` &&
+  case $perms in drwx--[-S]---*) :;; *) false;; esac && {
+    echo "$d"
+    return
+  }
+
+  # If we reach this point, we'll have to create a directory manually.
+
+  # Get a copy of the template without its suffix of X's.
+  base_template_=`echo "$template_"|sed 's/XX*$//'`
+
+  # Calculate how many X's we've just removed.
+  template_length_=`echo "$template_" | wc -c`
+  nx_=`echo "$base_template_" | wc -c`
+  nx_=`expr $template_length_ - $nx_`
+
+  err_=
+  i_=1
+  while :; do
+    X_=`rand_bytes_ $nx_`
+    candidate_dir_="$destdir_slash_$base_template_$X_"
+    err_=`mkdir -m 0700 "$candidate_dir_" 2>&1` \
+      && { echo "$candidate_dir_"; return; }
+    test $MAX_TRIES_ -le $i_ && break;
+    i_=`expr $i_ + 1`
+  done
+  fail_ "$err_"
+}
+
+# =============================================================================
+# Core test framework
+
+# An arbitrary prefix to help distinguish test directories.
+testdir_prefix_ () { printf gt; }
+
+# Set up the environment for the test to run in.
+setup_ ()
+{
+  if test "$VERBOSE" = yes; then
+    # Test whether set -x may cause the selected shell to corrupt an
+    # application's stderr.  Many do, including zsh-4.3.10 and the /bin/sh
+    # from SunOS 5.11, OpenBSD 4.7 and Irix 6.5.
+    # If enabling verbose output this way would cause trouble, simply
+    # issue a warning and refrain.
+    if $gl_set_x_corrupts_stderr_; then
+      warn_ "using SHELL=$SHELL with 'set -x' corrupts stderr"
+    else
+      set -x
+    fi
+  fi
+
+  initial_cwd_=$PWD
+
+  # Create and enter the temporary directory.
+  pfx_=`testdir_prefix_`
+  test_dir_=`mktempd_ "$initial_cwd_" "$pfx_-$ME_.XXXX"` \
+    || fail_ "failed to create temporary directory in $initial_cwd_"
+  cd "$test_dir_" || fail_ "failed to cd to temporary directory"
+  # Set variables srcdir, builddir, for the convenience of the test.
+  case $srcdir in
+    /* | ?:*) ;;
+    *) srcdir="../$srcdir" ;;
+  esac
+  builddir=".."
+  export srcdir builddir
+
+  # As autoconf-generated configure scripts do, ensure that IFS
+  # is defined initially, so that saving and restoring $IFS works.
+  gl_init_sh_nl_='
+'
+  IFS=" ""	$gl_init_sh_nl_"
+
+  # This trap statement, along with a trap on 0 below, ensure that the
+  # temporary directory, $test_dir_, is removed upon exit as well as
+  # upon receipt of any of the listed signals.
+  for sig_ in 1 2 3 13 15; do
+    eval "trap 'Exit $(expr $sig_ + 128)' $sig_"
+  done
+}
+
+# This is a stub function that is run upon trap (upon regular exit and
+# interrupt).  Override it with a per-test function, e.g., to unmount
+# a partition, or to undo any other global state changes.
+cleanup_ () { :; }
+
+# Run the user-overridable cleanup_ function, remove the temporary
+# directory and exit with the incoming value of $?.
+remove_tmp_ ()
+{
+  __st=$?
+  cleanup_
+  if test "$KEEP" = yes; then
+    echo "Not removing temporary directory $test_dir_"
+  else
+    # cd out of the directory we're about to remove
+    cd "$initial_cwd_" || cd / || cd /tmp
+    chmod -R u+rwx "$test_dir_"
+    # If removal fails and exit status was to be 0, then change it to 1.
+    rm -rf "$test_dir_" || { test $__st = 0 && __st=1; }
+  fi
+  exit $__st
+}
+
+# =============================================================================
+# Prepending directories to PATH
+
+# Given a directory name, DIR, if every entry in it that matches *.exe
+# contains only the specified bytes (see the case stmt below), then print
+# a space-separated list of those names and return 0.  Otherwise, don't
+# print anything and return 1.  Naming constraints apply also to DIR.
+find_exe_basenames_ ()
+{
+  feb_dir_=$1
+  feb_fail_=0
+  feb_result_=
+  feb_sp_=
+  for feb_file_ in $feb_dir_/*.exe; do
+    # If there was no *.exe file, or there existed a file named "*.exe" that
+    # was deleted between the above glob expansion and the existence test
+    # below, just skip it.
+    test "x$feb_file_" = "x$feb_dir_/*.exe" && test ! -f "$feb_file_" \
+      && continue
+    # Exempt [.exe, since we can't create a function by that name, yet
+    # we can't invoke [ by PATH search anyways due to shell builtins.
+    test "x$feb_file_" = "x$feb_dir_/[.exe" && continue
+    case $feb_file_ in
+      *[!-a-zA-Z/0-9_.+]*) feb_fail_=1; break;;
+      *) # Remove leading file name components as well as the .exe suffix.
+         feb_file_=${feb_file_##*/}
+         feb_file_=${feb_file_%.exe}
+         feb_result_="$feb_result_$feb_sp_$feb_file_";;
+    esac
+    feb_sp_=' '
+  done
+  test $feb_fail_ = 0 && printf %s "$feb_result_"
+  return $feb_fail_
+}
+
+# Consider the files in directory, $1.
+# For each file name of the form PROG.exe, create an alias named
+# PROG that simply invokes PROG.exe, then return 0.  If any selected
+# file name or the directory name, $1, contains an unexpected character,
+# define no alias and return 1.
+create_exe_shims_ ()
+{
+  case $EXEEXT in
+    '') return 0 ;;
+    .exe) ;;
+    *) echo "$0: unexpected \$EXEEXT value: $EXEEXT" 1>&2; return 1 ;;
+  esac
+
+  base_names_=`find_exe_basenames_ $1` \
+    || { echo "$0 (exe_shim): skipping directory: $1" 1>&2; return 0; }
+
+  if test -n "$base_names_"; then
+    for base_ in $base_names_; do
+      alias "$base_"="$base_$EXEEXT"
+    done
+  fi
+
+  return 0
+}
+
+# Use this function to prepend to PATH an absolute name for each
+# specified, possibly-$initial_cwd_-relative, directory.
+path_prepend_ ()
+{
+  while test $# != 0; do
+    path_dir_=$1
+    case $path_dir_ in
+      '') fail_ "invalid path dir: '$1'";;
+      /* | ?:*) abs_path_dir_=$path_dir_;;
+      *) abs_path_dir_=$initial_cwd_/$path_dir_;;
+    esac
+    case $abs_path_dir_ in
+      *$PATH_SEPARATOR*) fail_ "invalid path dir: '$abs_path_dir_'";;
+    esac
+    PATH="$abs_path_dir_$PATH_SEPARATOR$PATH"
+
+    # Create an alias, FOO, for each FOO.exe in this directory.
+    create_exe_shims_ "$abs_path_dir_" \
+      || fail_ "something failed (above): $abs_path_dir_"
+    shift
+  done
+  export PATH
+}
+
+# =============================================================================
+# Convenience environment variables for the tests
+
+# -----------------------------------------------------------------------------
+
+# Enable glibc's malloc-perturbing option.
+# This is useful for exposing code that depends on the fact that
+# malloc-related functions often return memory that is mostly zeroed.
+# If you have the time and cycles, use valgrind to do an even better job.
+: ${MALLOC_PERTURB_=87}
+export MALLOC_PERTURB_
+
+# -----------------------------------------------------------------------------
+
+# The interpreter for Bourne-shell scripts.
+# No special standards compatibility requirements.
+# Some environments, such as Android, don't have /bin/sh.
+if test -f /bin/sh$EXEEXT; then
+  BOURNE_SHELL=/bin/sh
+else
+  BOURNE_SHELL=sh
+fi
+
+# =============================================================================
+# Convenience functions for the tests
+
+# -----------------------------------------------------------------------------
+# Return value checking
+
+# This is used to simplify checking of the return value
+# which is useful when ensuring a command fails as desired.
+# I.e., just doing `command ... &&fail=1` will not catch
+# a segfault in command for example.  With this helper you
+# instead check an explicit exit code like
+#   returns_ 1 command ... || fail
+returns_ () {
+  # Disable tracing so it doesn't interfere with stderr of the wrapped command
+  { set +x; } 2>/dev/null
+
+  local exp_exit="$1"
+  shift
+  "$@"
+  test $? -eq $exp_exit && ret_=0 || ret_=1
+
+  if test "$VERBOSE" = yes && test "$gl_set_x_corrupts_stderr_" = false; then
+    set -x
+  fi
+  { return $ret_; } 2>/dev/null
+}
+
+# -----------------------------------------------------------------------------
+# Text file comparison
+
+# Emit a header similar to that from diff -u;  Print the simulated "diff"
+# command so that the order of arguments is clear.  Don't bother with @@ lines.
+emit_diff_u_header_ ()
+{
+  printf '%s\n' "diff -u $*" \
+    "--- $1	1970-01-01" \
+    "+++ $2	1970-01-01"
+}
+
+# Arrange not to let diff or cmp operate on /dev/null,
+# since on some systems (at least OSF/1 5.1), that doesn't work.
+# When there are not two arguments, or no argument is /dev/null, return 2.
+# When one argument is /dev/null and the other is not empty,
+# cat the nonempty file to stderr and return 1.
+# Otherwise, return 0.
+compare_dev_null_ ()
+{
+  test $# = 2 || return 2
+
+  if test "x$1" = x/dev/null; then
+    test -s "$2" || return 0
+    emit_diff_u_header_ "$@"; sed 's/^/+/' "$2"
+    return 1
+  fi
+
+  if test "x$2" = x/dev/null; then
+    test -s "$1" || return 0
+    emit_diff_u_header_ "$@"; sed 's/^/-/' "$1"
+    return 1
+  fi
+
+  return 2
+}
+
+for diff_opt_ in -u -U3 -c '' no; do
+  test "$diff_opt_" != no &&
+    diff_out_=`exec 2>/dev/null; diff $diff_opt_ "$0" "$0" < /dev/null` &&
+    break
+done
+if test "$diff_opt_" != no; then
+  if test -z "$diff_out_"; then
+    compare_ () { diff $diff_opt_ "$@"; }
+  else
+    compare_ ()
+    {
+      # If no differences were found, AIX and HP-UX 'diff' produce output
+      # like "No differences encountered".  Hide this output.
+      diff $diff_opt_ "$@" > diff.out
+      diff_status_=$?
+      test $diff_status_ -eq 0 || cat diff.out || diff_status_=2
+      rm -f diff.out || diff_status_=2
+      return $diff_status_
+    }
+  fi
+elif cmp -s /dev/null /dev/null 2>/dev/null; then
+  compare_ () { cmp -s "$@"; }
+else
+  compare_ () { cmp "$@"; }
+fi
+
+# Usage: compare EXPECTED ACTUAL
+#
+# Given compare_dev_null_'s preprocessing, defer to compare_ if 2 or more.
+# Otherwise, propagate $? to caller: any diffs have already been printed.
+compare ()
+{
+  # This looks like it can be factored to use a simple "case $?"
+  # after unchecked compare_dev_null_ invocation, but that would
+  # fail in a "set -e" environment.
+  if compare_dev_null_ "$@"; then
+    return 0
+  else
+    case $? in
+      1) return 1;;
+      *) compare_ "$@";;
+    esac
+  fi
+}
+
+# -----------------------------------------------------------------------------
+
+# If you want to override the testdir_prefix_ function,
+# or to add more utility functions, use this file.
+test -f "$srcdir/init.cfg" \
+  && . "$srcdir/init.cfg"
+
+# =============================================================================
+# Set up the environment for the test to run in.
+
+setup_ "$@"
+# This trap is here, rather than in the setup_ function, because some
+# shells run the exit trap at shell function exit, rather than script exit.
+trap remove_tmp_ 0
diff --git a/src/grep/tests/initial-tab b/src/grep/tests/initial-tab
new file mode 100755
index 0000000..c19a7ce
--- /dev/null
+++ b/src/grep/tests/initial-tab
@@ -0,0 +1,37 @@
+#!/bin/sh
+# Exercise -T.
+
+# Copyright 2016-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+printf 'x\n\n' > in || framework_failure_
+
+grep -T '^' in > out || fail=1
+compare in out || fail=1
+
+printf 'in:\tx\nin:\n' > exp || framework_failure_
+grep -T '^' in /dev/null > out || fail=1
+compare exp out || fail=1
+
+printf '%s\n' a b c d e f g h i j > in1 || framework_failure_
+printf 'in1: 1:\ta\n' > exp1 || framework_failure_
+grep -Tn 'a' in1 /dev/null > out1 || fail=1
+compare exp1 out1 || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/invalid-multibyte-infloop b/src/grep/tests/invalid-multibyte-infloop
new file mode 100755
index 0000000..b4ad14b
--- /dev/null
+++ b/src/grep/tests/invalid-multibyte-infloop
@@ -0,0 +1,37 @@
+#!/bin/sh
+# Ensure that we don't trigger a grep -F infloop.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+require_compiled_in_MB_support
+require_timeout_
+
+encode() { echo "$1" | tr A '\202'; }
+
+encode AA > input
+
+fail=0
+
+# Before 2.15, this would infloop.
+LC_ALL=en_US.UTF-8 timeout 10 grep -aF $(encode A) input > out
+status=$?
+if test $status -eq 0; then
+  compare input out
+elif test $status -eq 1; then
+  compare_dev_null_ /dev/null out
+else
+  test $status -eq 2
+fi || fail=1
+
+LC_ALL=en_US.UTF-8 timeout 10 grep -F $(encode A) input > out
+status=$?
+if test $status -eq 0; then
+  compare /dev/null out
+elif test $status -eq 1; then
+  compare_dev_null_ /dev/null out
+else
+  test $status -eq 2
+fi || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/khadafy b/src/grep/tests/khadafy
new file mode 100755
index 0000000..1c68d5b
--- /dev/null
+++ b/src/grep/tests/khadafy
@@ -0,0 +1,26 @@
+#! /bin/sh
+# Regression test for GNU grep.
+#
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+# The Khadafy test is brought to you by Scott Anderson . . .
+
+grep -E -f $abs_top_srcdir/tests/khadafy.regexp \
+    $abs_top_srcdir/tests/khadafy.lines > khadafy.out || fail=1
+if cmp $abs_top_srcdir/tests/khadafy.lines khadafy.out
+then
+        :
+else
+        echo Khadafy test failed -- output left on khadafy.out
+        fail=1
+fi
+
+Exit $fail
diff --git a/src/grep/tests/khadafy.lines b/src/grep/tests/khadafy.lines
new file mode 100644
index 0000000..57e21a1
--- /dev/null
+++ b/src/grep/tests/khadafy.lines
@@ -0,0 +1,32 @@
+1)  Muammar Qaddafi
+2)  Mo'ammar Gadhafi
+3)  Muammar Kaddafi
+4)  Muammar Qadhafi
+5)  Moammar El Kadhafi
+6)  Muammar Gadafi
+7)  Mu'ammar al-Qadafi
+8)  Moamer El Kazzafi
+9)  Moamar al-Gaddafi
+10) Mu'ammar Al Qathafi
+11) Muammar Al Qathafi
+12) Mo'ammar el-Gadhafi
+13) Moamar El Kadhafi
+14) Muammar al-Qadhafi
+15) Mu'ammar al-Qadhdhafi
+16) Mu'ammar Qadafi
+17) Moamar Gaddafi
+18) Mu'ammar Qadhdhafi
+19) Muammar Khaddafi
+20) Muammar al-Khaddafi
+21) Mu'amar al-Kadafi
+22) Muammar Ghaddafy
+23) Muammar Ghadafi
+24) Muammar Ghaddafi
+25) Muamar Kaddafi
+26) Muammar Quathafi
+27) Muammar Gheddafi
+28) Muamar Al-Kaddafi
+29) Moammar Khadafy
+30) Moammar Qudhafi
+31) Mu'ammar al-Qaddafi
+32) Mulazim Awwal Mu'ammar Muhammad Abu Minyar al-Qadhafi
diff --git a/src/grep/tests/khadafy.regexp b/src/grep/tests/khadafy.regexp
new file mode 100644
index 0000000..46fe8dd
--- /dev/null
+++ b/src/grep/tests/khadafy.regexp
@@ -0,0 +1 @@
+M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]
diff --git a/src/grep/tests/kwset-abuse b/src/grep/tests/kwset-abuse
new file mode 100755
index 0000000..bb8911f
--- /dev/null
+++ b/src/grep/tests/kwset-abuse
@@ -0,0 +1,31 @@
+#! /bin/sh
+# Evoke a segfault in a hard-to-reach code path of kwset.c.
+# This bug affected grep versions 2.19 through 2.21.
+#
+# Copyright (C) 2015-2021 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+# This test case chooses a haystack of size 260,000, since prodding
+# with gdb showed a reallocation slightly larger than that in fillbuf.
+# To reach the buggy code, the needle must have length < 1/11 that of
+# the haystack, and 10,000 is a nice round number that fits the bill.
+printf '%0260000dXy\n' 0 | returns_ 1 grep -F $(printf %010000dy 0) \
+  || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/long-line-vs-2GiB-read b/src/grep/tests/long-line-vs-2GiB-read
new file mode 100755
index 0000000..29d29ec
--- /dev/null
+++ b/src/grep/tests/long-line-vs-2GiB-read
@@ -0,0 +1,25 @@
+#!/bin/sh
+# Ensure that grep can handle lines 2GiB long.
+# Before grep-2.16, a line of length 2^31 or greater would provoke
+# an "Invalid argument" (EINVAL) failure from the read syscall on
+# systems like OS/X 10.8.5.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+# Searching 2GiB takes a while.
+expensive_
+
+echo big > exp || framework_failure_
+
+MiB=1048576
+dd bs=$MiB seek=2048 of=big < /dev/null || framework_failure_
+echo x >> big || framework_failure_
+grep -l x big > out 2> err || fail=1
+
+# Not everyone has 2GB of memory free.
+grep '^grep: memory exhausted$' err && skip_ 'memory exhausted'
+
+compare exp out || fail=1
+compare /dev/null err || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/long-pattern-perf b/src/grep/tests/long-pattern-perf
new file mode 100755
index 0000000..8151c1a
--- /dev/null
+++ b/src/grep/tests/long-pattern-perf
@@ -0,0 +1,42 @@
+#!/bin/sh
+# grep-2.21 would incur a 100x penalty for 10x increase in regexp length
+
+# Copyright 2015-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+# This test is susceptible to failure due to differences in
+# system load during the two test runs, so we'll mark it as
+# "expensive", making it less likely to be run by regular users.
+expensive_
+
+echo x > in || framework_failure_
+# Note that we want 10x the byte count (not line count) in the larger file.
+seq 10000 50000 | tr -d '\012' > r || framework_failure_
+cat r r r r r r r r r r > re-10x || framework_failure_
+mv r re || framework_failure_
+
+base_ms=$(user_time_ 1 grep -f re in    ) || fail=1
+b10x_ms=$(user_time_ 1 grep -f re-10x in) || fail=1
+
+# Increasing the length of the regular expression by a factor
+# of 10 should cause no more than a 10x increase in duration.
+# However, we'll draw the line at 20x to avoid false-positives.
+returns_ 1 expr $base_ms '<' $b10x_ms / 20 || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/many-regex-performance b/src/grep/tests/many-regex-performance
new file mode 100755
index 0000000..4b4dfe8
--- /dev/null
+++ b/src/grep/tests/many-regex-performance
@@ -0,0 +1,79 @@
+#!/bin/sh
+# Test for this performance regression:
+# grep-3.4 would require O(N^2) RSS for N regexps
+# grep-3.5 requires O(N) in the most common cases.
+
+# Copyright 2020-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+# This test is susceptible to failure due to differences in
+# system load during the two test runs, so we'll mark it as
+# "expensive", making it less likely to be run by regular users.
+expensive_
+
+# Make the quick/small input large enough so that even on high-end
+# systems this first invocation takes at least 10ms of user time.
+word_list=/usr/share/dict/linux.words
+
+# If $word_list does not exist, generate an input that exibhits
+# similar performance characteristics.
+if ! test -f $word_list; then
+  # Generate data comprable to that word list.
+  # Note how all "words" start with "a", and that there is
+  # a small percentage of lines with at least one "." metachar.
+  # This requires /dev/urandom, so if it's not present, skip
+  # this test. If desperate, we could fall back to using
+  # tar+compressed lib/*.c as the data source.
+  test -r /dev/urandom \
+    || skip_ 'this system has neither word list nor working /dev/urandom'
+  word_list=word_list
+  ( echo a; cat /dev/urandom		\
+    | LC_ALL=C tr -dc 'a-zA-Z0-9_'	\
+    | head -c500000			\
+    | sed 's/\(........\)/\1\n/g'	\
+    | sed s/rs/./			\
+    | sed s/./a/			\
+    | sort				\
+  ) > $word_list
+fi
+
+n_lines=2000
+while :; do
+  sed ${n_lines}q < $word_list > in || framework_failure_
+  small_ms=$(LC_ALL=C user_time_ 1 grep --file=in -v in) || fail=1
+  test $small_ms -ge 10 && break
+  n_lines=$(expr $n_lines + 2000)
+done
+
+# Now, run it again, but with 20 times as many lines.
+n_lines=$(expr $n_lines \* 20)
+sed ${n_lines}q < $word_list > in || framework_failure_
+large_ms=$(LC_ALL=C user_time_ 1 grep --file=in -v in) || fail=1
+
+# Deliberately recording in an unused variable so it
+# shows up in set -x output, in case this test fails.
+ratio=$(expr "$large_ms" / "$small_ms")
+
+# The duration of the larger run must be no more than 60 times
+# that of the small one.  Using recent versions prior to this fix,
+# this test would fail due to ratios larger than 300.  Using the
+# fixed version, it's common to see a ratio of 20-30.
+returns_ 1 expr $small_ms '<' $large_ms / 60 || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/match-lines b/src/grep/tests/match-lines
new file mode 100755
index 0000000..597f061
--- /dev/null
+++ b/src/grep/tests/match-lines
@@ -0,0 +1,36 @@
+#!/bin/sh
+# Trigger a bug in the DFA matcher that would make
+# grep -F -x -o PAT print an extra newline for each match.
+# This would fail for grep-2.19 and grep-2.20.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+printf 'a\n' > in || framework_failure_
+
+fail=0
+
+for locale in C en_US.UTF-8; do
+  for options in -x '-E -x' '-F -x'; do
+    for o in '' -o; do
+      LC_ALL=$locale grep $o $options a in > out || fail=1
+      compare out in || fail=1
+    done
+  done
+done
+
+Exit $fail
diff --git a/src/grep/tests/max-count-overread b/src/grep/tests/max-count-overread
new file mode 100755
index 0000000..23c45cb
--- /dev/null
+++ b/src/grep/tests/max-count-overread
@@ -0,0 +1,15 @@
+#!/bin/sh
+# Ensure that -m1 stops reading after the first match.
+# In grep-2.19, yes x|grep -m1 x would infloop.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_timeout_
+
+fail=0
+
+echo x > exp || framework_failure_
+
+yes x | timeout 10 grep -m1 x > out || fail=1
+compare exp out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/max-count-vs-context b/src/grep/tests/max-count-vs-context
new file mode 100755
index 0000000..e80c3ce
--- /dev/null
+++ b/src/grep/tests/max-count-vs-context
@@ -0,0 +1,23 @@
+#!/bin/sh
+# Show how -m1 works with -A N when a 2nd match is < N lines after the first
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+cat <<EOF > in || framework_failure_
+needle
+1st line of context
+2nd line of context
+3rd line of context
+another needle
+5th line of context relative to first match
+6th line...
+EOF
+
+sed 6q in > exp || framework_failure_
+
+fail=0
+grep -m1 -A5 needle in > out 2>err || fail=1
+
+compare exp out || fail=1
+compare /dev/null err || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/mb-dot-newline b/src/grep/tests/mb-dot-newline
new file mode 100755
index 0000000..8cc4ddf
--- /dev/null
+++ b/src/grep/tests/mb-dot-newline
@@ -0,0 +1,33 @@
+#!/bin/sh
+# Trigger a bug in the DFA matcher.
+# This would fail for grep-2.20.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+printf 'a\naa\n' > in || framework_failure_
+printf 'aa\n' > exp || framework_failure_
+
+fail=0
+
+for LOC in en_US.UTF-8 en_US zh_CN $LOCALE_FR_UTF8 C; do
+  out1=out1-$LOC
+  LC_ALL=$LOC grep '..' in > out || fail=1
+  compare exp out || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/mb-non-UTF8-overrun b/src/grep/tests/mb-non-UTF8-overrun
new file mode 100755
index 0000000..11668a3
--- /dev/null
+++ b/src/grep/tests/mb-non-UTF8-overrun
@@ -0,0 +1,29 @@
+#!/bin/sh
+# grep would sometimes read beyond end of input, when using a non-UTF8
+# multibyte locale.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_JP_EUC_locale_
+
+fail=0
+
+# This would fail when running an ASAN-enabled binary, or when run via
+# valgrind, accessing one byte beyond the end of an input buffer.
+returns_ 1 grep -z . < /dev/null || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/mb-non-UTF8-perf-Fw b/src/grep/tests/mb-non-UTF8-perf-Fw
new file mode 100755
index 0000000..c84f28e
--- /dev/null
+++ b/src/grep/tests/mb-non-UTF8-perf-Fw
@@ -0,0 +1,39 @@
+#!/bin/sh
+# Test for a performance regression with -Fw and a non-UTF8 multibyte locale.
+
+# Copyright 2019-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+require_timeout_
+require_JP_EUC_locale_
+
+yes 00 | head -10000000 > in || framework_failure_
+
+# Since we're using an absolute timeout below and want to avoid any initial
+# disk read performance penalty, run first with a large timeout and no error
+# test to prime any cache. Prompted by a report of test failure on a netbsd8.1
+# VM whereby the first run would take 2.5 MINUTES, yet the second would complete
+# in just half a second.
+timeout 500 grep -Fw 0 in
+
+# Before fixing the regression, this would have taken minutes.
+# With the fix, it typically completes in well under one second.
+returns_ 1 timeout 30 grep -Fw 0 in || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/mb-non-UTF8-performance b/src/grep/tests/mb-non-UTF8-performance
new file mode 100755
index 0000000..a0e9b70
--- /dev/null
+++ b/src/grep/tests/mb-non-UTF8-performance
@@ -0,0 +1,48 @@
+#!/bin/sh
+# grep-2.17 would take nearly 200x longer to run the command below.
+# The 200x is on an Intel i7-based system.
+# On an AMD FX-4100, it would take up to 2500x longer.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+# This test is susceptible to failure due to differences in
+# system load during the two test runs, so we'll mark it as
+# "expensive", making it less likely to be run by regular users.
+expensive_
+
+# Make the input large enough so that even on high-end systems
+# the unibyte test takes at least 10ms of user time.
+n_lines=100000
+while :; do
+  yes $(printf '%078d' 0) | sed ${n_lines}q > in || framework_failure_
+  ubyte_ms=$(LC_ALL=C user_time_ 1 grep -i foobar in) || fail=1
+  test $ubyte_ms -ge 10 && break
+  n_lines=$(expr $n_lines + 200000)
+done
+
+require_JP_EUC_locale_
+mbyte_ms=$(user_time_ 1 grep -i foobar in) || fail=1
+
+# The duration of the multi-byte run must be no more than 30 times
+# that of the single-byte one.
+# A multiple of 3 seems to be enough for i5,i7, but AMD needs >25.
+returns_ 1 expr $ubyte_ms '<' $mbyte_ms / 30 || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/mb-non-UTF8-word-boundary b/src/grep/tests/mb-non-UTF8-word-boundary
new file mode 100755
index 0000000..8c4c755
--- /dev/null
+++ b/src/grep/tests/mb-non-UTF8-word-boundary
@@ -0,0 +1,29 @@
+#!/bin/sh
+# grep -Fw could false-match when using a non-UTF8 multibyte locale.
+
+# Copyright 2019-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_JP_EUC_locale_
+
+fail=0
+
+echo ab > in || framework_failure_
+
+# This would mistakenly print its input line from grep-2.28..3.3
+returns_ 1 grep -Fw b in || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/multibyte-white-space b/src/grep/tests/multibyte-white-space
new file mode 100755
index 0000000..39b90c6
--- /dev/null
+++ b/src/grep/tests/multibyte-white-space
@@ -0,0 +1,99 @@
+#! /bin/sh
+# Test whether \s matches SP and UTF-8 multi-byte white space characters.
+#
+# Copyright (C) 2013-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+
+LC_ALL=en_US.UTF-8
+export LC_ALL
+
+# It would have been nice to be able to use all UTF8 characters
+# with the Unicode WSpace=Y character property,
+# https://en.wikipedia.org/wiki/Whitespace_character, but that
+# would currently cause distracting failures everywhere I've tried.
+# Instead, I've listed each with an indicator column, telling what
+# this test should do if the system's locale/tools produce the
+# wrong answer.
+
+# The values in that column:
+# X required on all systems (fail if \s or \S fail to work as expected)
+# x required on "modern enough" systems
+# O optional: \s or \S misbehavior elicits a warning, but never failure
+
+utf8_space_characters=$(sed 's/.*: *//;s/  */\\x/g' <<\EOF
+U+0009 Horizontal Tab:            X 09
+U+000A Line feed:                 O 0a
+U+000B Vertical Tab:              X 0b
+U+000C Form feed:                 X 0c
+U+000D Carriage return:           X 0d
+U+0020 SPACE:                     X 20
+U+0085 Next line:                 O 85
+U+00A0 NO-BREAK SPACE:            O c2 a0
+U+1680 OGHAM SPACE MARK:          x e1 9a 80
+U+2000 EN QUAD:                   x e2 80 80
+U+2001 EM QUAD:                   x e2 80 81
+U+2002 EN SPACE:                  x e2 80 82
+U+2003 EM SPACE:                  x e2 80 83
+U+2004 THREE-PER-EM SPACE:        x e2 80 84
+U+2005 FOUR-PER-EM SPACE:         x e2 80 85
+U+2006 SIX-PER-EM SPACE:          x e2 80 86
+U+2007 FIGURE SPACE:              O e2 80 87
+U+2008 PUNCTUATION SPACE:         x e2 80 88
+U+2009 THIN SPACE:                x e2 80 89
+U+200A HAIR SPACE:                x e2 80 8a
+U+200B ZERO WIDTH SPACE:          O e2 80 8b
+U+202F NARROW NO-BREAK SPACE:     O e2 80 af
+U+205F MEDIUM MATHEMATICAL SPACE: x e2 81 9f
+U+3000 IDEOGRAPHIC SPACE:         x e3 80 80
+EOF
+)
+
+fail=0
+
+# On systems that are not "modern enough," simply warn when an "x"-marked
+# character is not classified as white space.  Too many systems
+# have inadequate UTF-8 tables in this respect, and that lack should not
+# discourage/confuse those who consider whether to install grep.
+
+# As for what constitutes "modern enough", I've arbitrarily started
+# with "Fedora 20 or newer".  Tested additions welcome.
+modern_enough=0
+grep -iE 'fedora release [2-9][0-9]+\b' /etc/redhat-release >/dev/null 2>&1 \
+  && modern_enough=1
+
+for i in $utf8_space_characters; do
+  eval 'fail() { fail=1; }'
+  m=ERROR
+  case $i in
+      X*) ;;
+      x*) test $modern_enough = 1 || { eval 'fail() { :; }'; m=warning; } ;;
+      O*) m=warning; eval 'fail() { :; }' ;;
+      *) warn_ "unexpected prefix: $i"; exit 1 ;;
+  esac
+
+  # Strip the prefix byte.
+  i=${i#?}
+
+  hex_printf_ "$i" | grep -q '^\s$' \
+      || { warn_ " $m: \\s failed to match $i in the $LC_ALL locale"; fail; }
+  hex_printf_ "$i" | returns_ 1 grep -q '\S' \
+      || { warn_ " $m: \\S mistakenly matched $i in the $LC_ALL locale"; fail; }
+done
+
+
+# This is a separate test, only nominally related to \s.
+# It is solely to get coverage of a code path (exercising dfa.c's
+# match_mb_charset function) that would have otherwise been untouched.
+# However, as of the change-set adding this new test, match_mb_charset
+# is unreachable via grep.
+printf '\0' | returns_ 1 grep -aE '^\s?$' > out 2>&1 || fail=1
+compare /dev/null out
+
+Exit $fail
diff --git a/src/grep/tests/multiple-begin-or-end-line b/src/grep/tests/multiple-begin-or-end-line
new file mode 100755
index 0000000..9f09c62
--- /dev/null
+++ b/src/grep/tests/multiple-begin-or-end-line
@@ -0,0 +1,28 @@
+#!/bin/sh
+# Test a pattern of multiple begin or end line constraints.
+# This would mistakenly print a line when using grep-2.19.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+echo aa | grep 'a\(b$\|c$\)' >out && fail=1
+compare /dev/null out || fail=1
+
+echo aa | grep '\(^b\|^c\)a' >out && fail=1
+compare /dev/null out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/no-perl b/src/grep/tests/no-perl
new file mode 100644
index 0000000..956a826
--- /dev/null
+++ b/src/grep/tests/no-perl
@@ -0,0 +1,6 @@
+#! /bin/sh
+# Perl is not available, the test should be considered skipped.
+# FD 9 should have been opened by the test suite harness, pointing
+# to the original stderr (usually, the user's terminal).
+echo "test skipped: no usable version of Perl found" >&9
+exit 77
diff --git a/src/grep/tests/null-byte b/src/grep/tests/null-byte
new file mode 100755
index 0000000..9402c2b
--- /dev/null
+++ b/src/grep/tests/null-byte
@@ -0,0 +1,68 @@
+#!/bin/sh
+# Test NUL bytes in patterns and data.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+# Add "." to PATH for the use of get-mb-cur-max.
+path_prepend_ .
+
+locales=C
+for locale in en_US.iso885915 en_US.UTF-8; do
+  get-mb-cur-max en_US.UTF-8 >/dev/null 2>&1 && locales="$locales $locale"
+done
+
+fail=0
+
+for left in '' a '#' '\0'; do
+  for right in '' b '#' '\0'; do
+    data="$left\\0$right"
+    printf "$data\\n" >in || framework_failure_
+    for hat in '' '^'; do
+      for dollar in '' '$'; do
+        for force_regex in '' '\\(\\)\\1'; do
+          pat="$hat$force_regex$data$dollar"
+          printf "$pat\\n" >pat || framework_failure_
+          for locale in $locales; do
+            LC_ALL=$locale grep -f pat in
+            status=$?
+            test $status -eq 0 || test $status -eq 1 ||
+              fail_ "'$pat' caused an error"
+            LC_ALL=$locale grep -a -f pat in | cmp -s - in ||
+              fail_ "-a '$pat' does not match '$data'"
+          done
+        done
+      done
+    done
+  done
+done
+
+(echo xxx && yes yyy | sed 100000q && printf 'z\n\0') >in || framework_failure_
+echo xxx >exp || framework_failure_
+grep xxx in >out || fail=1
+compare exp out || fail=1
+
+printf 'xxx\n' > exp || framework_failure_
+grep -E 'xxx|z' in >out || fail=1
+compare exp out || fail=1
+
+printf '%s\0' 'abcadc' >in || framework_failure_
+printf '%s\0' 'abc' 'adc' >exp || framework_failure_
+grep -oz 'a[^c]*c' in >out || fail=1
+compare exp out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/options b/src/grep/tests/options
new file mode 100755
index 0000000..84ff327
--- /dev/null
+++ b/src/grep/tests/options
@@ -0,0 +1,49 @@
+#! /bin/sh
+# Test for POSIX options for grep
+#
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+#
+# grep [ -E| -F][ -c| -l| -q ][-insvx] -e pattern_list
+#      [-f pattern_file] ... [file. ..]
+# grep [ -E| -F][ -c| -l| -q ][-insvx][-e pattern_list]
+#      -f pattern_file ... [file ...]
+# grep [ -E| -F][ -c| -l| -q ][-insvx] pattern_list [file...]
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+# checking for -E extended regex
+echo "abababccccccd" | grep -E -e 'c{3}' > /dev/null 2>&1
+if test $? -ne 0 ; then
+        echo "Options: Wrong status code, test #1 failed"
+        fail=1
+fi
+
+# checking for basic regex
+echo "abababccccccd" | grep -G -e 'c\{3\}' > /dev/null 2>&1
+if test $? -ne 0 ; then
+        echo "Options: Wrong status code, test #2 failed"
+        fail=1
+fi
+
+# checking for fixed string
+echo "abababccccccd" | grep -F -e 'c\{3\}' > /dev/null 2>&1
+if test $? -ne 1 ; then
+        echo "Options: Wrong status code, test #3 failed"
+        fail=1
+fi
+
+# checking for multiple -e options; see:
+# https://bugs.gnu.org/21670
+echo abchelloabc | grep -e '^hello' -e 'hello$' > /dev/null 2>&1
+if test $? -ne 1 ; then
+        echo "Options: Wrong status code, test #4 failed"
+        fail=1
+fi
+
+Exit $fail
diff --git a/src/grep/tests/pcre b/src/grep/tests/pcre
new file mode 100755
index 0000000..449156d
--- /dev/null
+++ b/src/grep/tests/pcre
@@ -0,0 +1,22 @@
+#! /bin/sh
+# Simple PCRE tests.
+#
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_pcre_
+
+fail=0
+
+echo | grep -P '\s*$' || fail=1
+echo | grep -zP '\s$' || fail=1
+echo '.ab' | returns_ 1 grep -Pwx ab || fail=1
+echo x | grep -Pz '[^a]' || fail=1
+printf 'x\n\0' | returns_ 1 grep -zP 'x$' || fail=1
+printf 'a\nb\0' | grep -zxP a && fail=1
+
+Exit $fail
diff --git a/src/grep/tests/pcre-abort b/src/grep/tests/pcre-abort
new file mode 100755
index 0000000..51cee25
--- /dev/null
+++ b/src/grep/tests/pcre-abort
@@ -0,0 +1,20 @@
+#! /bin/sh
+# Show that grep handles PCRE's PCRE_ERROR_MATCHLIMIT.
+# In grep-2.8, it would abort.
+#
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_pcre_
+
+fail=0
+
+echo aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab > in || framework_failure_
+returns_ 2 grep -P '((a+)*)+$' in > out || fail=1
+compare /dev/null out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/pcre-context b/src/grep/tests/pcre-context
new file mode 100755
index 0000000..b910a20
--- /dev/null
+++ b/src/grep/tests/pcre-context
@@ -0,0 +1,36 @@
+#!/bin/sh
+# Test Perl regex with context
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_pcre_
+
+cat >in <<'EOF'
+Preceded by 0 empty lines.
+
+Preceded by 1 empty line.
+
+
+Preceded by 2 empty lines.
+
+
+
+Preceded by 3 empty lines.
+
+
+
+
+Preceded by 4 empty lines.
+
+EOF
+test $? -eq 0 || framework_failure_
+
+printf '%s\0' \
+       'Preceded by 2 empty lines.' \
+       'Preceded by 3 empty lines.' \
+       'Preceded by 4 empty lines.' >exp || framework_failure_
+
+fail=0
+
+grep -Pzo '(?<=\n\n\n).*' in >out || fail_ 'grep -Pzo failed'
+compare exp out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/pcre-count b/src/grep/tests/pcre-count
new file mode 100755
index 0000000..9eda54b
--- /dev/null
+++ b/src/grep/tests/pcre-count
@@ -0,0 +1,28 @@
+#! /bin/sh
+# grep -P / grep -Pc are inconsistent results
+# This bug affected grep versions 2.21 through 2.22.
+#
+# Copyright (C) 2015-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_pcre_
+
+fail=0
+
+printf 'a\n%032768d\nb\0\n%032768d\na\n' 0 0 > in || framework_failure_
+
+# grep will discover that the input is a binary file sooner if the
+# page size is larger, so allow for either possible output.
+printf 'a\n' >exp1a || framework_failure_
+LC_ALL=C grep -P 'a' in >out || fail=1
+compare exp1a out || compare /dev/null out || fail=1
+
+printf '2\n' >exp2 || framework_failure_
+LC_ALL=C grep -Pc 'a' in >out || fail=1
+compare exp2 out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/pcre-infloop b/src/grep/tests/pcre-infloop
new file mode 100755
index 0000000..a4c7cac
--- /dev/null
+++ b/src/grep/tests/pcre-infloop
@@ -0,0 +1,33 @@
+#!/bin/sh
+# With some versions of libpcre, apparently including 8.35,
+# the following would trigger an infinite loop in its match function.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_timeout_
+require_en_utf8_locale_
+require_compiled_in_MB_support
+LC_ALL=en_US.UTF-8 require_pcre_
+
+printf 'a\201b\r' > in || framework_failure_
+
+fail=0
+
+returns_ 1 env LC_ALL=en_US.UTF-8 timeout 10 grep -P 'a.?..b' in \
+  || fail_ "libpcre's match function appears to infloop"
+
+Exit $fail
diff --git a/src/grep/tests/pcre-invalid-utf8-infloop b/src/grep/tests/pcre-invalid-utf8-infloop
new file mode 100755
index 0000000..45b5ee1
--- /dev/null
+++ b/src/grep/tests/pcre-invalid-utf8-infloop
@@ -0,0 +1,26 @@
+#! /bin/sh
+# Ensure that grep -oaP doesn't infloop for invalid multi-byte input
+#
+# Copyright (C) 2015-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_timeout_
+require_en_utf8_locale_
+require_compiled_in_MB_support
+LC_ALL=en_US.UTF-8 require_pcre_
+
+fail=0
+
+printf '\201_\0' > in || framework_failure_
+printf '_\n' > exp || framework_failure_
+
+LC_ALL=en_US.UTF-8 timeout 10 grep -aoP _ in > out 2> err || fail=1
+
+compare exp out || fail=1
+compare /dev/null err || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/pcre-invalid-utf8-input b/src/grep/tests/pcre-invalid-utf8-input
new file mode 100755
index 0000000..d1a2920
--- /dev/null
+++ b/src/grep/tests/pcre-invalid-utf8-input
@@ -0,0 +1,31 @@
+#! /bin/sh
+# Ensure that grep -P doesn't abort or infloop for invalid multi-byte input
+#
+# Copyright (C) 2013-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_timeout_
+require_en_utf8_locale_
+require_compiled_in_MB_support
+LC_ALL=en_US.UTF-8 require_pcre_
+
+fail=0
+
+printf 'j\202j\nj\nk\202\n' > in || framework_failure_
+
+LC_ALL=en_US.UTF-8 timeout 10 grep -P j in
+test $? -eq 0 || fail=1
+
+LC_ALL=en_US.UTF-8 timeout 10 grep -P 'k$' in
+test $? -eq 1 || fail=1
+
+echo k >exp
+
+LC_ALL=en_US.UTF-8 timeout 10 grep -aoP 'k*' in >out || fail=1
+compare exp out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/pcre-jitstack b/src/grep/tests/pcre-jitstack
new file mode 100755
index 0000000..2a2b1b9
--- /dev/null
+++ b/src/grep/tests/pcre-jitstack
@@ -0,0 +1,63 @@
+#! /bin/sh
+# Grep 2.21 would report "grep: internal PCRE error: -27"
+#
+# Copyright 2015-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_pcre_
+
+for p in 'base64 -d' 'base64 -D' 'openssl base64 -d' \
+      "perl -MMIME::Base64 -0777ne 'print decode_base64(\$_)'" FAIL; do
+    test "$p" = FAIL && skip_ "your system lacks a base64 decoder"
+    x=$(echo eA==| ( eval "$p" ) 2>/dev/null) && test "X$x" = Xx &&
+      {
+        eval "b64_decode() { $p; }"
+        break
+      }
+done
+
+foo=$( (echo foo | gzip | gzip -d) 2>/dev/null) && test "X$foo" = Xfoo \
+  || skip_ "your system lacks the gzip program"
+
+fail=0
+
+b64_decode >pcrejit.txt.gz <<'EOF' || framework_failure_
+H4sIAAAAAAACA+2bUU4DMQxE/7mMz5T7XwKE+IBKVLue58yk0B9EtX6xJxN7t4VaH69a6+tHrW+/
+r4e3n75KARWShSOFTtiumE3FPVyo79ATIJ0Ry0No/yXe99UIUqTGKKUzYHFJHJoaCONQDCnDSCDS
+IPAvGCVeXNsZ7lpbWFfdaZtgPos5LeK2C1TBKzD09V3HFlCOsbFT/hNbz4HzJaRjnjdam9FXw/o6
+VyPozhMmiaRYAMeNSJR1iMjBEFLMtsH7lptartfxkzPQgFVofwRlxKsMYn2KNDnU9fsOQCkRIYVT
+G80ZRqBpSQjRYPX7s9gvtqknyNE2f8V09sxHM7YPmMMJgrmVna2AT717n5fUAIDkiBCqFgWUUgKD
+8jOc0Rgj5JS6vZnQI14wkaTDAkD266p/iVHs8gjCrMFARVM0iEVgFAa9YRAQT4tkgsmloTJLmyCm
+uSHRnTkzIdZMmZ5kYX/iJFtTwu9cFvr3aDWcUx4pUW/cVQwPoQSlwguNd4M0vTpAauKodmLFXv1P
+dkcKkYUglER2Q4L4gnmOiNGzSBATwGQgwihs5/QffIhyfg4hJvM2r4Rp6L+1ibCCd4jYZ6jCiBlc
+2+y4fl4yTGIwcWXNAUEeXmu8iCMV96DNTnmRNICDk2N5qaXGbsF91OX/0hlcYTjrMfy02p9Xv70D
+mv3RZCFOAAA=
+EOF
+
+gzip -d pcrejit.txt || framework_failure_
+
+LC_ALL=C grep -P -n '^([/](?!/)|[^/])*~/.*' pcrejit.txt
+if test $? != 1; then
+    # The above often makes grep attempt to use an inordinate amount
+    # of stack space.  If grep fails with $? != 1, try again, but this
+    # time with no soft limit:
+
+    # Use ulimit to remove that limit, if possible.
+    # If ulimit is not usable, just skip this test.
+    (ulimit -s unlimited) || skip_ this shell lacks ulimit support
+
+    # Rerun that same test, but now with no limit on stack size:
+    (ulimit -s unlimited;
+     returns_ 1 env LC_ALL=C grep -P -n '^([/](?!/)|[^/])*~/.*' pcrejit.txt 2> err) \
+       || fail=1
+
+    # If that failed due to stack overflow, don't cry foul.
+    overflow_pat="stack overflow|exceeded PCRE's recursion limit"
+    test $fail = 1 && { grep -Eq "$overflow_pat" err && fail=0 || cat err; }
+fi
+
+Exit $fail
diff --git a/src/grep/tests/pcre-o b/src/grep/tests/pcre-o
new file mode 100755
index 0000000..1d155a7
--- /dev/null
+++ b/src/grep/tests/pcre-o
@@ -0,0 +1,17 @@
+#! /bin/sh
+# Ensure that grep -oP doesn't cause internal error at match.
+#
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_pcre_
+
+fail=0
+
+echo ab | grep -oP 'a' || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/pcre-utf8 b/src/grep/tests/pcre-utf8
new file mode 100755
index 0000000..c5d0b80
--- /dev/null
+++ b/src/grep/tests/pcre-utf8
@@ -0,0 +1,40 @@
+#! /bin/sh
+# Ensure that, with -P, Unicode \p{} symbols are correctly matched.
+#
+# Copyright (C) 2012-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_en_utf8_locale_
+LC_ALL=en_US.UTF-8 require_pcre_
+
+fail=0
+
+echo '$' | LC_ALL=en_US.UTF-8 grep -qP '\p{S}' \
+  || skip_ 'PCRE support is compiled out, or it does not support properties'
+
+euro='\342\202\254 euro'
+printf "$euro\\n" > in || framework_failure_
+
+# The euro sign has the unicode "Symbol" property, so this must match:
+LC_ALL=en_US.UTF-8 grep -P '^\p{S}' in > out || fail=1
+compare in out || fail=1
+
+# This RE must *not* match in the C locale, because the first
+# byte is not a "Symbol".
+LC_ALL=C grep -P '^\p{S}' in > out && fail=1
+compare /dev/null out || fail=1
+
+LC_ALL=en_US.UTF-8 grep -P '^. euro$' in > out2 || fail=1
+compare in out2 || fail=1
+
+LC_ALL=en_US.UTF-8 grep -oP '. euro' in > out3 || fail=1
+compare in out3 || fail=1
+
+LC_ALL=en_US.UTF-8 grep -P '^\P{S}' in > out4
+compare /dev/null out4 || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/pcre-w b/src/grep/tests/pcre-w
new file mode 100755
index 0000000..7173b58
--- /dev/null
+++ b/src/grep/tests/pcre-w
@@ -0,0 +1,31 @@
+#! /bin/sh
+# Before grep-2.19, grep -Pw %% would match %% enclosed in word boundaries
+#
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_pcre_
+
+fail=0
+
+echo %aa% > in || framework_failure_
+grep -Pw aa in > out || fail=1
+compare out in || fail=1
+
+echo a%%a > in || framework_failure_
+grep -Pw %% in > out && fail=1
+compare /dev/null out || fail=1
+
+echo %%%% > in || framework_failure_
+grep -Pw %% in > out || fail=1
+compare out in || fail=1
+
+echo %% > in || framework_failure_
+grep -Pw %% in > out || fail=1
+compare out in || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/pcre-wx-backref b/src/grep/tests/pcre-wx-backref
new file mode 100755
index 0000000..350091a
--- /dev/null
+++ b/src/grep/tests/pcre-wx-backref
@@ -0,0 +1,28 @@
+#! /bin/sh
+# Before grep-2.19, grep -P and -w/-x would not work with a back-reference.
+#
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_pcre_
+
+echo aa > in || framework_failure_
+echo 'grep: reference to non-existent subpattern' > exp-err \
+  || framework_failure_
+
+fail=0
+
+for xw in x w; do
+  grep -P$xw '(.)\1' in > out 2>&1 || fail=1
+  compare out in || fail=1
+
+  grep -P$xw '(.)\2' in > out 2> err && fail=1
+  compare /dev/null out || fail=1
+  compare exp-err err || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/pcre-z b/src/grep/tests/pcre-z
new file mode 100755
index 0000000..4ce9a93
--- /dev/null
+++ b/src/grep/tests/pcre-z
@@ -0,0 +1,28 @@
+#!/bin/sh
+# Test Perl regex with NUL-separated input
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_pcre_
+require_en_utf8_locale_
+
+REGEX=a
+
+printf '%s\n\0' abc def ghi aaa gah > in || framework_failure_
+
+grep -z "$REGEX" in > exp 2>err || fail_ 'Cannot do BRE (grep -z) match.'
+compare /dev/null err || fail_ 'stderr not empty on grep -z.'
+
+# Sanity check the output
+test "$(grep -cz $REGEX in 2>err)" = 3 \
+    || fail_ 'Incorrect BRE (grep -cz) match.'
+compare /dev/null err || fail_ 'stderr not empty on grep -cz.'
+
+fail=0
+grep -Pz "$REGEX" in > out 2>err || fail=1
+compare exp out || fail=1
+compare /dev/null err || fail=1
+
+printf '\303\200\0' >in0 # "À" followed by a NUL.
+LC_ALL=en_US.UTF-8 grep -z . in0 >out || fail=1
+cmp in0 out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/posix-bracket b/src/grep/tests/posix-bracket
new file mode 100755
index 0000000..5b8a0fc
--- /dev/null
+++ b/src/grep/tests/posix-bracket
@@ -0,0 +1,34 @@
+#!/bin/sh
+# Check various bracket expressions in the POSIX locale.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+LC_ALL=C
+export LC_ALL
+
+fail=0
+
+echo a >in || framework_failure_
+for bracketed in '[.a.]' '[.a.]-a' 'a-[.a.]' '[.a.]-[.a.]' \
+    '[=a=]' '[:alpha:]' 'a-a[.-.]--'; do
+  grep "[$bracketed]" in >out || fail=1
+  compare in out || fail=1
+  grep "[^$bracketed]" in >out
+  test $? -eq 1 || fail=1
+  compare /dev/null out || fail=1
+done
+Exit $fail
diff --git a/src/grep/tests/prefix-of-multibyte b/src/grep/tests/prefix-of-multibyte
new file mode 100755
index 0000000..2228a22
--- /dev/null
+++ b/src/grep/tests/prefix-of-multibyte
@@ -0,0 +1,44 @@
+#!/bin/sh
+# This would mistakenly print a line prior to grep-2.18.
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+require_compiled_in_MB_support
+
+encode() { echo "$1" | tr ABC '\357\274\241'; }
+
+encode ABC >exp1
+encode aABC >exp2
+encode ABCABC >exp3
+encode _____________________ABCABC___ >exp4
+
+fail=0
+
+for LOC in en_US.UTF-8 $LOCALE_FR_UTF8; do
+  for pat in A aA BCA; do
+    for file in exp1 exp2 exp3 exp4; do
+      for type in regex dfa fgrep; do
+        case $type in
+          dfa) opt= prefix= ;;
+          fgrep) opt=-F prefix= ;;
+          regex) opt= prefix='\(\)\1' ;;
+        esac
+        pattern=$prefix$(encode $pat)
+        out=out-$type-$LOC
+        LC_ALL=$LOC grep $opt "$pattern" $file >$out
+        status=$?
+        echo $status >$out.status
+        if test $status -eq 0; then
+          compare $file $out
+        elif test $status -eq 1; then
+          compare_dev_null_ /dev/null $out
+        else
+          test $status -eq 2
+        fi || fail=1
+        compare out-regex-$LOC.status $out.status || fail=1
+      done
+    done
+  done
+done
+
+Exit $fail
diff --git a/src/grep/tests/proc b/src/grep/tests/proc
new file mode 100755
index 0000000..43b62d8
--- /dev/null
+++ b/src/grep/tests/proc
@@ -0,0 +1,18 @@
+#! /bin/sh
+# Test the /proc file system if available.
+
+# Copyright 2016-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+test -r /proc/self/status || skip_ 'No /proc/self/status on this platform.'
+
+grep '^' </proc/self/status >/dev/null || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/r-dot b/src/grep/tests/r-dot
new file mode 100755
index 0000000..29aedad
--- /dev/null
+++ b/src/grep/tests/r-dot
@@ -0,0 +1,20 @@
+#!/bin/sh
+# Check that "grep -r PAT" reads ".".
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+mkdir dir || framework_failure_
+echo aaa > dir/a || framework_failure_
+echo bbb > dir/b || framework_failure_
+
+echo a:aaa > exp || framework_failure_
+
+(cd dir && grep -r aaa) > out || fail=1
+compare exp out || fail=1
+
+(cd dir && grep -r aaa < a) > out || fail=1
+compare exp out || fail=1
+
+(cd dir && grep -r aaa *) > out || fail=1
+compare exp out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/repetition-overflow b/src/grep/tests/repetition-overflow
new file mode 100755
index 0000000..38a652d
--- /dev/null
+++ b/src/grep/tests/repetition-overflow
@@ -0,0 +1,19 @@
+#!/bin/sh
+# These would fail (i.e., match erroneously) prior to grep-2.11.
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+xp1=4294967297 # 2^32+1
+xp2=4294967298 # 2^32+2
+
+fail=0
+
+# Before grep-2.11, when DFA-matching, a repetition count exceeding the
+# range of "unsigned int" would silently wrap around.   Hence, 2^32+1
+# would be treated just like "1", and both of these would mistakenly match.
+
+echo abc  | returns_ 2 grep -E "b{$xp1}"   > out 2> /dev/null || fail=1
+compare /dev/null out || fail=1
+echo abbc | returns_ 2 grep -E "b{1,$xp2}" > out 2> /dev/null || fail=1
+compare /dev/null out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/reversed-range-endpoints b/src/grep/tests/reversed-range-endpoints
new file mode 100755
index 0000000..4c2193c
--- /dev/null
+++ b/src/grep/tests/reversed-range-endpoints
@@ -0,0 +1,18 @@
+#!/bin/sh
+# Ensure that an invalid range like [b-a] evokes exit status of 2.
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+printf 'grep: Invalid range end\n' > exp
+for prog in grep 'grep -E'; do
+  # exit status must be 2, not 1
+  returns_ 2 $prog '[b-a]' < /dev/null > out 2>&1 || fail=1
+
+  # Normalize the diagnostic prefix from e.g., "/mnt/dir/grep: " to "grep: "
+  sed 's/^[^:]*: /grep: /' out > k && mv k out
+
+  compare exp out || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/sjis-mb b/src/grep/tests/sjis-mb
new file mode 100755
index 0000000..abe2c0c
--- /dev/null
+++ b/src/grep/tests/sjis-mb
@@ -0,0 +1,62 @@
+#!/bin/sh
+# similar to euc-mb and fgrep-infloop, but tests SJIS encoding.
+# in this encoding, an ASCII character is both a valid single-byte
+# character, and a suffix of a valid double-byte character
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+# Add "." to PATH for the use of get-mb-cur-max.
+path_prepend_ .
+
+require_compiled_in_MB_support
+require_timeout_
+
+# Sequences used in this test ("%" and "@" become 8-bit characters, while "A"
+# is the real ASCII character for "A"):
+# - "%" becomes an half-width katakana in SJIS, but it is an invalid sequence
+#   in UTF-8.
+# - "@@" and "@A" are both valid sequences in SJIS.  We try to fool grep into
+#   matching "A" against "@A", or mistaking a valid "A" match for the second
+#   byte of a multi-byte character.
+
+encode() { echo "$1" | tr @% '\203\301'; }
+
+for locale in ja_JP.SHIFT_JIS ja_JP.SJIS ja_JP.PCK ''; do
+  test "$(get-mb-cur-max $locale)" = 2 && break
+done
+test -n "$locale" || skip_ 'SJIS locale not found'
+
+k=0
+test_grep_reject() {
+  k=$(expr $k + 1)
+  encode "$2" > in || return 1
+  returns_ 1 env LC_ALL=$locale timeout 10s \
+    grep $1 $(encode "$3") in >out$k 2>&1 \
+      && compare /dev/null out$k
+}
+
+test_grep() {
+  k=$(expr $k + 1)
+  encode "$2" > exp$k
+  LC_ALL=$locale \
+    timeout 10s grep $1 $(encode "$3") exp$k > out$k 2>&1
+  test $? = 0 && compare exp$k out$k
+}
+
+failure_tests=@A
+successful_tests='%%AA @AA @A@@A'
+
+fail=0
+for i in $successful_tests; do
+  test_grep -F $i A || fail=1
+  test_grep -E $i A || fail=1
+done
+
+for i in $failure_tests; do
+  test_grep_reject -F $i A || fail=1
+  test_grep_reject -E $i A || fail=1
+done
+
+test_grep_reject -E @A '^$|A' || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/skip-device b/src/grep/tests/skip-device
new file mode 100755
index 0000000..d6368f1
--- /dev/null
+++ b/src/grep/tests/skip-device
@@ -0,0 +1,16 @@
+#!/bin/sh
+# grep must ignore --devices=ACTION (-D) when reading stdin
+# For grep-2.11, this test would fail.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+# Test both with no file argument, and with "-".
+echo foo | grep -D skip foo - || fail=1
+echo foo | grep --devices=skip foo || fail=1
+
+require_timeout_
+mkfifo myfifo || framework_failure_
+timeout 10 grep -D skip foo myfifo
+test $? -eq 1 || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/skip-read b/src/grep/tests/skip-read
new file mode 100755
index 0000000..1e9e718
--- /dev/null
+++ b/src/grep/tests/skip-read
@@ -0,0 +1,25 @@
+#!/bin/sh
+# Check that grep skips reading in some cases.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+echo /dev/null >exp || framework_failure_
+
+for opts in '-m0 y' '-f /dev/null' '-v ""'; do
+  for matcher in '' -E -F; do
+    for file in /dev/null no-such-file; do
+      eval returns_ 1 grep $opts $matcher no-such-file > out || fail=1
+      compare /dev/null out || fail=1
+      eval returns_ 1 grep -l $opts $matcher /dev/null > out || fail=1
+      compare /dev/null out || fail=1
+    done
+    eval returns_ 1 grep -L $opts $matcher /dev/null > out || fail=1
+    compare exp out || fail=1
+    eval returns_ 1 grep -L $opts $matcher /dev/null > /dev/null || fail=1
+  done
+done
+
+
+Exit $fail
diff --git a/src/grep/tests/spencer1 b/src/grep/tests/spencer1
new file mode 100755
index 0000000..56eaeda
--- /dev/null
+++ b/src/grep/tests/spencer1
@@ -0,0 +1,21 @@
+#! /bin/sh
+# Regression test for GNU grep.
+# Copyright (C) 1988 Henry Spencer.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+# . . . and the following by Henry Spencer.
+
+${AWK-awk} -f $abs_top_srcdir/tests/spencer1.awk \
+    $abs_top_srcdir/tests/spencer1.tests > spencer1.script || fail=1
+
+. ./spencer1.script || fail=1
+
+Exit 1
diff --git a/src/grep/tests/spencer1-locale b/src/grep/tests/spencer1-locale
new file mode 100755
index 0000000..6a3d58a
--- /dev/null
+++ b/src/grep/tests/spencer1-locale
@@ -0,0 +1,23 @@
+#! /bin/sh
+# Regression test for GNU grep.
+#
+# Copyright (C) 1988 Henry Spencer.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+# . . . and the following by Henry Spencer.
+
+${AWK-awk} -v extra_locale=$LOCALE_FR_UTF8 \
+    -f "$abs_srcdir/spencer1-locale.awk" "$abs_srcdir/spencer1.tests" \
+  > spencer1-locale.script || fail=1
+
+${re_shell-${SHELL-sh}} spencer1-locale.script || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/spencer1-locale.awk b/src/grep/tests/spencer1-locale.awk
new file mode 100644
index 0000000..36a2c5b
--- /dev/null
+++ b/src/grep/tests/spencer1-locale.awk
@@ -0,0 +1,32 @@
+# Copyright (C) 1988 Henry Spencer.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+BEGIN {
+        FS = "@";
+        printf ("failures=0\n");
+}
+
+$0 !~ /^#/  && NF == 3 {
+        test("en_US.UTF-8")
+        test("ru_RU.KOI8-R")
+        test("fr_FR.ISO-8859-1")
+        test("zh_CN")
+        if (extra_locale != "") {
+                test(extra_locale)
+        }
+}
+
+function test(locale)
+{
+        printf ("status=$(echo '%s'| { LC_ALL=%s grep -E -e '%s' >/dev/null 2>&1 ; echo $?; })\n",$3, locale, $2);
+        printf ("if test $status -ne %s ; then\n", $1);
+        printf ("\techo Spencer test \\#%d failed \\(%s\\)\n", ++n, locale);
+        printf ("\tfailures=1\n");
+        printf ("fi\n");
+}
+
+END { printf ("exit $failures\n"); }
diff --git a/src/grep/tests/spencer1.awk b/src/grep/tests/spencer1.awk
new file mode 100644
index 0000000..6b9d3ee
--- /dev/null
+++ b/src/grep/tests/spencer1.awk
@@ -0,0 +1,22 @@
+# Copyright (C) 1988 Henry Spencer.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+BEGIN {
+        FS = "@";
+        printf ("failures=0\n");
+}
+
+$0 !~ /^#/  && NF == 3 {
+#	printf ("status=$(echo '%s'| { grep -E -e '%s' > /dev/null 2>&1; echo $?; cat >/dev/null; })\n",$3, $2);
+        printf ("status=$(echo '%s'| { grep -E -e '%s' >/dev/null 2>&1 ; echo $?; })\n",$3, $2);
+        printf ("if test $status -ne %s ; then\n", $1);
+        printf ("\techo Spencer test \\#%d failed\n", ++n);
+        printf ("\tfailures=1\n");
+        printf ("fi\n");
+}
+
+END { printf ("exit $failures\n"); }
diff --git a/src/grep/tests/spencer1.tests b/src/grep/tests/spencer1.tests
new file mode 100644
index 0000000..50581e8
--- /dev/null
+++ b/src/grep/tests/spencer1.tests
@@ -0,0 +1,144 @@
+0@abc@abc
+1@abc@xbc
+1@abc@axc
+1@abc@abx
+0@abc@xabcy
+0@abc@ababc
+0@ab*c@abc
+0@ab*bc@abc
+0@ab*bc@abbc
+0@ab*bc@abbbbc
+0@ab+bc@abbc
+1@ab+bc@abc
+1@ab+bc@abq
+0@ab+bc@abbbbc
+0@ab?bc@abbc
+0@ab?bc@abc
+1@ab?bc@abbbbc
+0@ab?c@abc
+0@^abc$@abc
+1@^abc$@abcc
+0@^abc@abcc
+1@^abc$@aabc
+0@abc$@aabc
+0@^@abc
+0@$@abc
+0@a.c@abc
+0@a.c@axc
+0@a.*c@axyzc
+1@a.*c@axyzd
+1@a[bc]d@abc
+0@a[bc]d@abd
+1@a[b-d]e@abd
+0@a[b-d]e@ace
+0@a[b-d]@aac
+0@a[-b]@a-
+0@a[b-]@a-
+2@a[b-a]@-
+2@a[]b@-
+2@a[@-
+0@a]@a]
+0@a[]]b@a]b
+0@a[^bc]d@aed
+1@a[^bc]d@abd
+0@a[^-b]c@adc
+1@a[^-b]c@a-c
+1@a[^]b]c@a]c
+0@a[^]b]c@adc
+0@ab|cd@abc
+0@ab|cd@abcd
+0@()ef@def
+0@()*@-
+1@*a@-
+0@^*@-
+0@$*@-
+2@(*)b@-@TO CORRECT
+1@$b@b
+2@a\@-
+0@a\(b@a(b
+0@a\(*b@ab
+0@a\(*b@a((b
+1@a\x@a\x
+1@abc)@-
+2@(abc@-
+0@((a))@abc
+0@(a)b(c)@abc
+0@a+b+c@aabbabc
+0@a**@-
+0@a*?@-
+0@(a*)*@-
+0@(a*)+@-
+0@(a|)*@-
+0@(a*|b)*@-
+0@(a+|b)*@ab
+0@(a+|b)+@ab
+0@(a+|b)?@ab
+0@[^ab]*@cde
+0@(^)*@-
+0@(ab|)*@-
+2@)(@-
+1@abc@
+1@abc@
+0@a*@
+0@([abc])*d@abbbcd
+0@([abc])*bcd@abcd
+0@a|b|c|d|e@e
+0@(a|b|c|d|e)f@ef
+0@((a*|b))*@-
+0@abcd*efg@abcdefg
+0@ab*@xabyabbbz
+0@ab*@xayabbbz
+0@(ab|cd)e@abcde
+0@[abhgefdc]ij@hij
+1@^(ab|cd)e@abcde
+0@(abc|)ef@abcdef
+0@(a|b)c*d@abcd
+0@(ab|ab*)bc@abc
+0@a([bc]*)c*@abc
+0@a([bc]*)(c*d)@abcd
+0@a([bc]+)(c*d)@abcd
+0@a([bc]*)(c+d)@abcd
+0@a[bcd]*dcdcde@adcdcde
+1@a[bcd]+dcdcde@adcdcde
+0@(ab|a)b*c@abc
+0@((a)(b)c)(d)@abcd
+0@[A-Za-z_][A-Za-z0-9_]*@alpha
+0@^a(bc+|b[eh])g|.h$@abh
+0@(bc+d$|ef*g.|h?i(j|k))@effgz
+0@(bc+d$|ef*g.|h?i(j|k))@ij
+1@(bc+d$|ef*g.|h?i(j|k))@effg
+1@(bc+d$|ef*g.|h?i(j|k))@bcdd
+0@(bc+d$|ef*g.|h?i(j|k))@reffgz
+1@((((((((((a))))))))))@-
+0@(((((((((a)))))))))@a
+0@ca{0,0}b@cb
+1@ca{0,0}b@cab
+0@ca{0,1}b@cb
+0@ca{0,1}b@cab
+1@ca{0,1}b@caab
+1@ca{1,2}b@cb
+0@ca{1,2}b@cab
+0@ca{1,2}b@caab
+1@ca{1,2}b@caaab
+1@multiple words of text@uh-uh
+0@multiple words@multiple words, yeah
+0@(.*)c(.*)@abcde
+1@\((.*),@(.*)\)
+1@[k]@ab
+0@abcd@abcd
+0@a(bc)d@abcd
+0@a[
-]?c@ac
+0@a[
]?c@ac
+0@(....).*\1@beriberi
+0@(^|\B)a@abc
+0@(^|\B)a@xyzabc
+1@(^|\B)a@xyz abc
+0@^a|\Ba@abc
+0@^a|\Ba@xyzabc
+1@^a|\Ba@xyz abc
+0@(^|\>)a@abc
+1@(^|\>)a@xyzabc
+1@(^|\>)a@xyz abc
+0@^a|\>a@abc
+1@^a|\>a@xyzabc
+1@^a|\>a@xyz abc
diff --git a/src/grep/tests/stack-overflow b/src/grep/tests/stack-overflow
new file mode 100755
index 0000000..d4d4b43
--- /dev/null
+++ b/src/grep/tests/stack-overflow
@@ -0,0 +1,53 @@
+#!/bin/sh
+# Ensure a stack overflow no longer segfaults
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+case $host_triplet in
+  *-midnightbsd*)
+    skip_ 'our stack-overflow detection does not work on this system';;
+esac
+
+# When compiled with ASAN, skip this test, because (on Fedora 32) it
+# would fail due to output like this on stderr:
+# +==2176827==WARNING: ASan is ignoring requested __asan_handle_no_return:
+#   stack top: 0x7ffc48f20000; bottom 0x000000e25000; size: 0x7ffc480fb000 (140721517473792)
+# +False positive error reports may follow
+# +For details see https://github.com/google/sanitizers/issues/189
+ASAN_OPTIONS=help=true grep --version 2>&1 | grep -q AddressSanitizer \
+  && skip_ 'avoid false failure when built with ASAN'
+
+echo grep: stack overflow > exp || framework_failure_
+
+# Limit stack size.  Otherwise, it appears to be too hard to overflow the
+# stack on some systems like gcc113, aarch64/linux-3.13.0 with 32GB of RAM
+# and 20GB of swap.
+ulimit -s 8192 2>/dev/null
+
+# grep attempts to detect overflow via gnulib's c-stack module.
+# Trigger that with an input regex composed solely of open parentheses,
+# increasing the size of that input until grep emits the expected diagnostic.
+fail=0
+for i in 1 3 5 10 20 30 40 50 100 200 400 1000; do
+  # Create a file containing $i * 10000 open parentheses:
+  printf %0${i}0000d 0|tr 0 '(' > in || framework_failure_
+  grep -E -f in >out 2>err; st=$?
+  if grep -q 'stack overflow' err; then
+    test $st = 2 || fail=1
+    compare /dev/null out || fail=1
+    compare exp err || fail=1
+    test $fail = 0 && Exit 0
+    fail_ 'printed "stack overflow", but something else was wrong'
+  fi
+done
+
+# If there was no stack overflow message and the final run exited with
+# status 1 and both stdout and stderr were empty, then assume it's a working
+# regex that avoids the internal stack overflow problem like glibc's regexp
+# used to.
+test $st = 1 \
+  && ! test -s out \
+  && ! test -s err \
+  && Exit 0
+
+fail_ 'grep never printed "stack overflow"'
diff --git a/src/grep/tests/status b/src/grep/tests/status
new file mode 100755
index 0000000..4b15426
--- /dev/null
+++ b/src/grep/tests/status
@@ -0,0 +1,73 @@
+#! /bin/sh
+# Test for status code for GNU grep.
+# status code
+#  0 match found
+#  1 no match
+#  2 file not found
+#
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+# should return 0 found a match
+echo "abcd" | grep -E -e 'abc' > /dev/null 2>&1
+if test $? -ne 0 ; then
+        echo "Status: Wrong status code, test \#1 failed"
+        fail=1
+fi
+
+# should return 1 found no match
+echo "abcd" | grep -E -e 'zbc' > /dev/null 2>&1
+if test $? -ne 1 ; then
+        echo "Status: Wrong status code, test \#2 failed"
+        fail=1
+fi
+
+# the filename MMMMMMMM.MMM should not exist hopefully
+if test -r MMMMMMMM.MMM; then
+        echo "Please remove MMMMMMMM.MMM to run check"
+else
+        # should return 2 file not found
+        grep -E -e 'abc' MMMMMMMM.MMM > /dev/null 2>&1
+        if test $? -ne 2 ; then
+                echo "Status: Wrong status code, test \#3 failed"
+                fail=1
+        fi
+
+        # should return 2 file not found
+        grep -E -s -e 'abc' MMMMMMMM.MMM > /dev/null 2>&1
+        if test $? -ne 2 ; then
+                echo "Status: Wrong status code, test \#4 failed"
+                fail=1
+        fi
+
+        # should return 0 (found a match) or 2 (file not found)
+        echo "abcd" | grep -E -s 'abc' - MMMMMMMM.MMM > /dev/null 2>&1
+        status=$?
+        if test $status -ne 0 && test $status -ne 2 ; then
+                echo "Status: Wrong status code, test \#5 failed"
+                fail=1
+        fi
+
+        # should return 0 found a match
+        echo "abcd" | grep -E -q -s 'abc' MMMMMMMM.MMM - > /dev/null 2>&1
+        if test $? -ne 0 ; then
+                echo "Status: Wrong status code, test \#6 failed"
+                fail=1
+        fi
+
+        # should still return 0 found a match
+        echo "abcd" | grep -E -q 'abc' MMMMMMMM.MMM - > /dev/null 2>&1
+        if test $? -ne 0 ; then
+                echo "Status: Wrong status code, test \#7 failed"
+                fail=1
+        fi
+fi
+
+Exit $fail
diff --git a/src/grep/tests/surrogate-pair b/src/grep/tests/surrogate-pair
new file mode 100755
index 0000000..a91fa36
--- /dev/null
+++ b/src/grep/tests/surrogate-pair
@@ -0,0 +1,60 @@
+#!/bin/sh
+# Check the handling of characters outside the Unicode BMP.
+
+# Copyright (C) 2013-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+require_compiled_in_MB_support
+
+fail=0
+
+s_pair=$(printf '\360\220\220\205')
+printf '%s\n' "$s_pair" > in || framework_failure_
+
+LC_ALL=en_US.UTF-8
+export LC_ALL
+
+# On Cygwin, before grep-2.15, this would segfault.
+# Require not just non-zero exit status, but exactly 1.
+returns_ 1 grep -i anything-else in > out 2>&1 || fail=1
+# Expect no output.
+compare /dev/null out || fail=1
+
+# This must always match, even on a 16-bit-wchar_t system.
+grep . in > out 2> err || fail=1
+
+# On platforms where wchar_t is only 16 bits, wchar_t cannot represent
+# the character encoded in 'in'.
+
+# On such old systems the above prints nothing on stdout and a diagnostic
+# on stderr.  In that case, return early; otherwise, the following tests
+# would all fail.
+io_pair=$(cat out):$(cat err)
+case $io_pair in
+  :'grep: in: binary file matches') Exit $fail;;
+  $s_pair:) ;;
+  *) fail_ "unexpected output: $io_pair"; fail=1;;
+esac
+
+# Also test whether a surrogate-pair in the search string works.
+for opt in '' -i -E -F -iE -iF; do
+  grep --file=in $opt in > out 2>&1 || fail=1
+  compare out in || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/symlink b/src/grep/tests/symlink
new file mode 100755
index 0000000..b580ce7
--- /dev/null
+++ b/src/grep/tests/symlink
@@ -0,0 +1,67 @@
+#!/bin/sh
+# Check that "grep -r" does the right thing with symbolic links.
+
+# Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# written by Paul Eggert
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+mkdir dir || framework_failure_
+echo a > dir/a || framework_failure_
+echo b > dir/b || framework_failure_
+ln -s a dir/c || framework_failure_
+ln -s . dir/d || framework_failure_
+ln -s dangling dir/e || framework_failure_
+
+touch out || framework_failure_
+
+for recursion in '' -r -R
+do
+  for files in '' '*'
+  do
+    case $recursion,$files in
+      -R,* | *,'*') expected_status=2 ;;
+      *) expected_status=0 ;;
+    esac
+
+    (cd dir && grep $recursion '^' $files <a ) >grepout
+    test $? -eq $expected_status || fail=1
+
+    case $recursion,$files in
+      ,)
+         exp='a\n' ;;
+      ,'*' | -R,)
+         exp='a:a\nb:b\nc:a\n' ;;
+      -r,)
+         exp='a:a\nb:b\n' ;;
+      -r,'*')
+         exp='a:a\nb:b\nc:a\nd/a:a\nd/b:b\n' ;;
+      -R,'*')
+         exp='a:a\nb:b\nc:a\nd/a:a\nd/b:b\nd/c:a\n' ;;
+      *)
+         framework_failure_ ;;
+    esac
+
+    printf "$exp" >exp || framework_failure_
+
+    LC_ALL=C sort grepout >out || fail=1
+
+    compare exp out || fail=1
+  done
+done
+
+Exit $fail
diff --git a/src/grep/tests/triple-backref b/src/grep/tests/triple-backref
new file mode 100755
index 0000000..796fa7b
--- /dev/null
+++ b/src/grep/tests/triple-backref
@@ -0,0 +1,30 @@
+#! /bin/sh
+# Test for a bug in glibc's regex code as of September 7, 2014.
+#
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+# This tickles a bug in the regex code that can cause heap violations etc.
+# A fix would be welcome, though fixing is not trivial.  See:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=11053
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_timeout_
+
+echo a > in || framework_failure_
+
+fail=0
+
+# Clear this, so glibc doesn't bother to produce a core dump.
+MALLOC_CHECK_=
+
+warn_ "$ME_: expect malfunction on glibc systems due to" \
+   "https://sourceware.org/bugzilla/show_bug.cgi?id=11053"
+
+timeout 10 grep -E '(.?)(.?)(.?)\3\2\1' in > out || fail=1
+compare out in || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/turkish-I b/src/grep/tests/turkish-I
new file mode 100755
index 0000000..cfe90c2
--- /dev/null
+++ b/src/grep/tests/turkish-I
@@ -0,0 +1,33 @@
+#!/bin/sh
+# grep -i in UTF-8: missing NL in output on line containing I WITH DOT (U+0130)
+
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+require_compiled_in_MB_support
+
+fail=0
+
+i='\304\260'
+printf "$i$i$i$i$i$i$i\n" > in || framework_failure_
+
+LC_ALL=en_US.UTF-8 grep -i .... in > out || fail=1
+
+compare out in || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/turkish-I-without-dot b/src/grep/tests/turkish-I-without-dot
new file mode 100755
index 0000000..127ec2f
--- /dev/null
+++ b/src/grep/tests/turkish-I-without-dot
@@ -0,0 +1,55 @@
+#!/bin/sh
+# grep -i would misbehave for any matched line containing a character
+# (like "I" in the tr_TR.utf8 locale) whose lower-case representation
+# occupies more bytes (two in this case, for 0xc4b1, aka U+0131).
+
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_tr_utf8_locale_
+require_compiled_in_MB_support
+
+# Before this change, grep could print a lot of uninitialized memory:
+# $ printf "IIIIIII\n" > in
+# $ for i in $(seq 10); do LC_ALL=tr_TR.utf8 src/grep -i . in|wc -c; done
+# 760
+# 754
+# 585
+# 298
+# 273
+# 458
+# 660
+# 552
+# 936
+# 678
+
+fail=0
+
+printf "IIIIIII\n" > in || framework_failure_
+LC_ALL=tr_TR.utf8 grep -i .... in > out || fail=1
+compare out in || fail=1
+
+# Also exercise the case in which the original string and the lower-case
+# buffer have precisely the same length (22 bytes here), yet internal
+# offsets do differ.  Lengths are the same because while some bytes shrink
+# when converted to lower case, others grow, and here they balance out.
+i='I\304\260'
+printf "$i$i$i$i$i$i$i\n" > in || framework_failure_
+LC_ALL=tr_TR.utf8 grep -i .... in > out || fail=1
+compare out in || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/turkish-eyes b/src/grep/tests/turkish-eyes
new file mode 100755
index 0000000..2969d09
--- /dev/null
+++ b/src/grep/tests/turkish-eyes
@@ -0,0 +1,58 @@
+#!/bin/sh
+# Ensure that case-insensitive matching works with all Turkish i's
+
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_compiled_in_MB_support
+
+fail=0
+
+L=tr_TR.UTF-8
+
+# Check for a broken tr_TR.UTF-8 locale definition.
+# In this locale, 'i' is not a lower-case 'I'.
+echo I | LC_ALL=$L grep -i i > /dev/null \
+    && skip_ "your $L locale appears to be broken"
+
+# Ensure that this matches:
+# printf 'I:İ ı:i\n'|LC_ALL=tr_TR.utf8 grep -i 'ı:i I:İ'
+I=$(printf '\304\260') # capital I with dot
+i=$(printf '\304\261') # lowercase dotless i
+
+      data="I:$I $i:i"
+search_str="$i:i I:$I"
+printf "$data\\n" > in || framework_failure_
+
+for opt in -E -F -G; do
+  for pat in i I "$i" "$I" " " : "$search_str"; do
+    LC_ALL=$L grep $opt -i "$pat" in > out || fail=1
+    compare in out || fail=1
+
+    case $pat in
+      i|"$I") printf "$I\\ni\\n";;
+      I|"$i") printf "I\\n$i\\n";;
+      :) printf ":\\n:\\n";;
+      ' ') printf " \\n";;
+      *) cat in;;
+    esac >exp || framework_failure_
+    LC_ALL=$L grep -o $opt -i "$pat" in > out || fail=1
+    compare exp out || fail=1
+  done
+done
+
+Exit $fail
diff --git a/src/grep/tests/two-chars b/src/grep/tests/two-chars
new file mode 100755
index 0000000..f866d6a
--- /dev/null
+++ b/src/grep/tests/two-chars
@@ -0,0 +1,24 @@
+#! /bin/sh
+# Check for grep -F with two patterns consisting of the same char.
+#
+# Copyright 2016-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+
+fail=0
+
+for LOC in en_US.UTF-8 $zh $LOCALE_FR_UTF8; do
+  printf '0\n0\n' >pat
+  printf '0\n' >in
+  out=out-$LOC
+  LC_ALL=$LOC grep -Ff pat in >$out || fail=1
+  compare in $out || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/two-files b/src/grep/tests/two-files
new file mode 100755
index 0000000..0129a9d
--- /dev/null
+++ b/src/grep/tests/two-files
@@ -0,0 +1,22 @@
+#! /bin/sh
+# Read two files, of increasing size.
+# With ASAN, this would have triggered a false-positive read of poisoned memory.
+#
+# Copyright 2015-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+fail=0
+
+printf a > 1 || framework_failure_
+printf ab > 2 || framework_failure_
+
+grep x 1 2 > out 2>&1
+test $? -eq 1 || fail=1
+compare /dev/null out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/unibyte-binary b/src/grep/tests/unibyte-binary
new file mode 100755
index 0000000..f76276f
--- /dev/null
+++ b/src/grep/tests/unibyte-binary
@@ -0,0 +1,32 @@
+#!/bin/sh
+# Test binary files in unibyte locales with encoding errors
+
+# Copyright 2016-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_unibyte_locale
+
+fail=0
+
+printf 'a\n\200\nb\n' >in || framework_failure_
+printf 'a\n' >exp || framework_failure_
+grep . in >out || fail=1
+
+# In some unibyte locales, \200 is an encoding error;
+# in others, it is a valid character.  Allow either possibility.
+compare exp out || compare in out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/unibyte-bracket-expr b/src/grep/tests/unibyte-bracket-expr
new file mode 100755
index 0000000..4ee481f
--- /dev/null
+++ b/src/grep/tests/unibyte-bracket-expr
@@ -0,0 +1,43 @@
+#!/bin/sh
+# Exercise a DFA range bug that arises only with a unibyte encoding
+# for which the wide-char-to-single-byte mapping is nontrivial.
+# E.g., the regexp, [C] would fail to match C in a unibyte locale like
+# ru_RU.KOI8-R for any C whose wide-char representation differed from
+# its single-byte equivalent.
+
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_ru_RU_koi8_r
+LC_ALL=ru_RU.KOI8-R
+export LC_ALL
+
+fail=0
+
+i=128
+while :; do
+  in=in-$i
+  octal=$(printf '%03o' $i)
+  b=$(printf "\\$octal")
+  echo "$b" > $in || framework_failure_
+  grep "[$b]" $in > out || fail=1
+  compare out $in || fail=1
+
+  test $i = 255 && break
+  i=$(expr $i + 1)
+done
+
+Exit $fail
diff --git a/src/grep/tests/unibyte-negated-circumflex b/src/grep/tests/unibyte-negated-circumflex
new file mode 100755
index 0000000..47426be
--- /dev/null
+++ b/src/grep/tests/unibyte-negated-circumflex
@@ -0,0 +1,27 @@
+#!/bin/sh
+# Exercise a bug where [^^-^] was treated as if it were [^-^].
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_unibyte_locale
+
+fail=0
+
+echo a >in || framework_failure_
+grep '[^^-^]' in >out || fail=1
+compare out in || fail=1
+Exit $fail
diff --git a/src/grep/tests/utf8-bracket b/src/grep/tests/utf8-bracket
new file mode 100755
index 0000000..0d31ece
--- /dev/null
+++ b/src/grep/tests/utf8-bracket
@@ -0,0 +1,40 @@
+#!/bin/sh
+# Check bracket expressions in a UTF-8 locale.
+
+# Copyright 2015-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_en_utf8_locale_
+
+printf '1\n2\n' >in || framework_failure_
+
+fail=0
+
+for locale in C en_US.UTF-8; do
+  for options in -qz -qzE; do
+    case $options in
+      *E*) parens='()';;
+      *) parens='\(\)';;
+    esac
+    for pattern in '1.2' '[12].2' '[1-2].2' '[1-2][^a][1-2]'; do
+      for suffix in '' "$parens\\1"; do
+        LC_ALL=$locale grep $options "$pattern$suffix" in || fail=1
+      done
+    done
+  done
+done
+
+Exit $fail
diff --git a/src/grep/tests/warn-char-classes b/src/grep/tests/warn-char-classes
new file mode 100755
index 0000000..b1db240
--- /dev/null
+++ b/src/grep/tests/warn-char-classes
@@ -0,0 +1,39 @@
+#!/bin/sh
+# Use of any --include or --exclude* option would segfault in 2.6 and 2.6.1
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+echo f > x || framework_failure_
+echo b >> x || framework_failure_
+echo h >> x || framework_failure_
+printf 'grep: character class syntax is [[:space:]], not [:space:]\n' \
+  > exp-err || framework_failure_
+
+# basic cases
+
+returns_ 2 grep '[:space:]' x 2> err || fail=1
+sed 's/^\([A-Za-z]:\)\{0,1\}[^: ]*: /grep: /' err > err1 && mv err1 err
+compare exp-err err || fail=1
+
+returns_ 1 grep '[[:space:]]' x 2> err || fail=1
+test -s err && fail=1
+
+# disabled by POSIXLY_CORRECT
+returns_ 1 env POSIXLY_CORRECT=yes grep '[:space:]' x 2> err || fail=1
+test -s err && fail=1
+
+# patterns that are considered valid
+returns_ 1 grep '[::]' x 2> err || fail=1
+test -s err && fail=1
+
+returns_ 1 grep '[:space]' x 2> err || fail=1
+test -s err && fail=1
+
+returns_ 1 grep '[:space:wxyz]' x 2> err || fail=1
+test -s err && fail=1
+
+returns_ 1 grep '[:space[:space:]:]' x 2> err || fail=1
+test -s err && fail=1
+
+returns_ 1 grep '[:spac-e:]' x 2> err || fail=1
+test -s err && fail=1
+Exit $fail
diff --git a/src/grep/tests/word-delim-multibyte b/src/grep/tests/word-delim-multibyte
new file mode 100755
index 0000000..31190ad
--- /dev/null
+++ b/src/grep/tests/word-delim-multibyte
@@ -0,0 +1,45 @@
+#!/bin/sh
+# exercise \< and \> with multibyte data.
+# Derived from https://savannah.gnu.org/bugs/?29537
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+
+e_acute=$(printf '\303\251')
+echo "$e_acute" > in || framework_failure_
+LC_ALL=en_US.UTF-8
+export LC_ALL
+
+fail=0
+
+grep "\\<$e_acute" in > out 2>err || fail=1
+compare out in || fail=1
+compare /dev/null err || fail=1
+
+grep "$e_acute\\>" in > out 2>err || fail=1
+compare out in || fail=1
+compare /dev/null err || fail=1
+
+grep -w "$e_acute" in > out 2>err || fail=1
+compare out in || fail=1
+compare /dev/null err || fail=1
+
+# Also ensure that this works in both the C locale and that multibyte one.
+# In the C locale, it failed due to a dfa.c regression in grep-3.2.
+echo 123-x > in || framework_failure_
+
+for locale in C en_US.UTF-8; do
+  LC_ALL=$locale grep '.\bx' in > out 2>err || fail=1
+  compare out in || fail=1
+  compare /dev/null err || fail=1
+done
+
+# Bug#43255
+printf 'a \303\255cone b\n' >in
+for flag in '' -i; do
+  returns_ 1 env LC_ALL=en_US.UTF-8 grep -w $flag cone in >out 2>err || fail=1
+  compare /dev/null out || fail=1
+  compare /dev/null err || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/word-multi-file b/src/grep/tests/word-multi-file
new file mode 100755
index 0000000..4b63520
--- /dev/null
+++ b/src/grep/tests/word-multi-file
@@ -0,0 +1,29 @@
+#!/bin/sh
+# exercise the -w option on multiple files
+# Derived from https://bugzilla.redhat.com/570500
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+mkdir a || framework_failure_
+( cd a \
+    && echo aa bb cc > 1 \
+    && echo bb dd ff > 2 \
+    && echo ff gg hh > 3 \
+    && echo bb xx zz > 4 \
+) || framework_failure_
+
+cat << \EOF > exp1 || framework_failure_
+a/1:aa bb cc
+a/2:bb dd ff
+a/4:bb xx zz
+EOF
+sed s/..// exp1 > exp2 || framework_failure_
+
+fail=0
+grep -rw bb a > out || fail=1
+sort < out > k; mv k out
+compare exp1 out || fail=1
+
+(cd a && grep -w bb [1-4]) > out || fail=1
+compare exp2 out || fail=1
+
+Exit $fail
diff --git a/src/grep/tests/word-multibyte b/src/grep/tests/word-multibyte
new file mode 100755
index 0000000..9cbb71f
--- /dev/null
+++ b/src/grep/tests/word-multibyte
@@ -0,0 +1,30 @@
+#!/bin/sh
+# This would fail for grep-2.20
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+
+e_acute=$(printf '\303\251')
+printf "$e_acute\n" > in || framework_failure_
+
+# Use this locale only if it is installed.
+zh=zh_CN.UTF-8
+path_prepend_ .
+case $(get-mb-cur-max $zh) in
+  [456]) ;;
+  *) zh=;;
+esac
+
+fail=0
+
+for LOC in en_US.UTF-8 $zh $LOCALE_FR_UTF8; do
+  out=out1-$LOC
+  LC_ALL=$LOC grep '\w' in >$out || fail=1
+  compare in $out || fail=1
+
+  out=out2-$LOC
+  LC_ALL=$LOC grep '\W' in >$out && fail=1
+  compare /dev/null $out || fail=1
+done
+
+Exit $fail
diff --git a/src/grep/tests/write-error-msg b/src/grep/tests/write-error-msg
new file mode 100755
index 0000000..f992df5
--- /dev/null
+++ b/src/grep/tests/write-error-msg
@@ -0,0 +1,55 @@
+#!/bin/sh
+# Ensure that output errors are reported with errno information.
+
+# Copyright 2016-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+test -e /dev/full || skip_ your system lacks /dev/full
+
+export LC_ALL=C
+
+# generate large input, filling the libc stdio buffers
+# and triggering a write(2) even without line buffering.
+yes 12345 | head -n 50000 > in || framework_failure_
+
+fail=0
+
+# disk-full error, line buffered
+# (note: GNU grep returns 2 on error)
+returns_ 2 grep --line-buffered -v '^$' <in >/dev/full 2>err1 \
+    || framework_failure_
+
+# disk-full error, unbuffered
+# (note: GNU grep returns 2 on error)
+returns_ 2 grep -v '^$' <in >/dev/full 2>err2 \
+    || framework_failure_
+
+# ensure each error message file contains a 'write error' with additional text
+for f in err1 err2 ;
+do
+    grep -Eiq '^[^:]*: write error: [a-z]+' $f \
+        || {
+             warn_ "incorrect/missing error message in file $f"
+             compare /dev/null $f   # print the content in the logs
+             fail=1
+           }
+done
+
+# These messages should be identical
+compare err1 err2 \
+    || { warn_ "err1,err2 contain different error messages" ; fail=1 ; }
+
+Exit $fail
diff --git a/src/grep/tests/yesno b/src/grep/tests/yesno
new file mode 100755
index 0000000..be03d2c
--- /dev/null
+++ b/src/grep/tests/yesno
@@ -0,0 +1,135 @@
+#! /bin/sh
+# Test feature interaction of -C, -v, -o, and -m.
+#
+# Copyright (C) 2001, 2006, 2009-2021 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.
+#
+# This set of tests was started by Charles Levert.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+: ${VERBOSE=}  # empty or "1"
+failures=0
+
+# Lines, including terminating LF, contain 10 octets.
+# The words "yes" and "no" are at zero-based octet offsets of 5, 15, ...
+yn='yesno.txt'
+cat > "$yn" <<EOF
+[A01 no ]
+[B02 no ]
+[C03 yes]
+[D04 yes]
+[E05 yes]
+[F06 no ]
+[G07 no ]
+[H08 yes]
+[I09 yes]
+[J10 no ]
+[K11 no ]
+[L12 no ]
+[M13 yes]
+[N14 yes]
+EOF
+# Noticed the symmetry?
+
+# All possible output substrings (lines):
+#      selected whole,         rejected whole, never-read whole,   selected part,   rejected part.
+   A='1:0:[A01 no ]/';    rA='1-0-[A01 no ]/'; XA='X[A01 no ]/';
+  B='2:10:[B02 no ]/';   rB='2-10-[B02 no ]/'; XB='X[B02 no ]/';
+  C='3:20:[C03 yes]/';   rC='3-20-[C03 yes]/'; XC='X[C03 yes]/';   c='3:25:yes/';   rc='3-25-yes/'
+  D='4:30:[D04 yes]/';   rD='4-30-[D04 yes]/'; XD='X[D04 yes]/';   d='4:35:yes/';   rd='4-35-yes/'
+  E='5:40:[E05 yes]/';   rE='5-40-[E05 yes]/'; XE='X[E05 yes]/';   e='5:45:yes/';   re='5-45-yes/'
+  F='6:50:[F06 no ]/';   rF='6-50-[F06 no ]/'; XF='X[F06 no ]/';
+  G='7:60:[G07 no ]/';   rG='7-60-[G07 no ]/'; XG='X[G07 no ]/';
+  H='8:70:[H08 yes]/';   rH='8-70-[H08 yes]/'; XH='X[H08 yes]/';   h='8:75:yes/';   rh='8-75-yes/'
+  I='9:80:[I09 yes]/';   rI='9-80-[I09 yes]/'; XI='X[I09 yes]/';   i='9:85:yes/';   ri='9-85-yes/'
+ J='10:90:[J10 no ]/';  rJ='10-90-[J10 no ]/'; XJ='X[J10 no ]/';
+K='11:100:[K11 no ]/'; rK='11-100-[K11 no ]/'; XK='X[K11 no ]/';
+L='12:110:[L12 no ]/'; rL='12-110-[L12 no ]/'; XL='X[L12 no ]/';
+M='13:120:[M13 yes]/'; rM='13-120-[M13 yes]/'; XM='X[M13 yes]/'; m='13:125:yes/'; rm='13-125-yes/'
+N='14:130:[N14 yes]/'; rN='14-130-[N14 yes]/'; XN='X[N14 yes]/'; n='14:135:yes/'; rn='14-135-yes/'
+# Group separators.
+s='--/'
+S='XYZ/'
+# Exit statuses.
+z0='?0/'
+z1='?1/'
+z2='?2/'
+
+# What needs fixing?  Specification, documentation, implementation, or this?
+# The individual tests.
+set x \
+  ''                "$C$D$E$H$I$M$N$z0" \
+  '-o'              "$c$d$e$h$i$m$n$z0" \
+  '-C,1'            "$rB$C$D$E$rF$rG$H$I$rJ$s$rL$M$N$z0" \
+  '-C,1,-o'         "$c$d$e$h$i$s$m$n$z0" \
+  '-C,1,-o,--group=XYZ' "$c$d$e$h$i$S$m$n$z0" \
+  '-C,1,-o,--no-gr' "$c$d$e$h$i$m$n$z0" \
+  '-C,4,-1'         "$rB$C$D$E$rF$rG$H$I$rJ$s$rL$M$N$z0" \
+  '-C,1,--group=XYZ' "$rB$C$D$E$rF$rG$H$I$rJ$S$rL$M$N$z0" \
+  '-C,1,--no-gr'    "$rB$C$D$E$rF$rG$H$I$rJ$rL$M$N$z0" \
+  '-m,4'            "$C$D$E$H$z0$XI$XJ$XK$XL$XM$XN" \
+  '-m,4,-o'         "$c$d$e$h$z0$XI$XJ$XK$XL$XM$XN" \
+  '-m,4,-C,1'       "$rB$C$D$E$rF$rG$H$rI$z0$XI$XJ$XK$XL$XM$XN" \
+  '-m,4,-C,1,-o'    "$c$d$e$h$z0$XI$XJ$XK$XL$XM$XN" \
+  '-m,5'            "$C$D$E$H$I$z0$XJ$XK$XL$XM$XN" \
+  '-m,5,-o'         "$c$d$e$h$i$z0$XJ$XK$XL$XM$XN" \
+  '-m,5,-C,1,-o'    "$c$d$e$h$i$z0$XJ$XK$XL$XM$XN" \
+  '-m,6'            "$C$D$E$H$I$M$z0$XN" \
+  '-m,6,-o'         "$c$d$e$h$i$m$z0$XN" \
+  '-m,6,-C,1'       "$rB$C$D$E$rF$rG$H$I$rJ$s$rL$M$rN$z0$XN" \
+  '-m,6,-C,1,-o'    "$c$d$e$h$i$s$m$z0$XN" \
+  '-v'              "$A$B$F$G$J$K$L$z0" \
+  '-v,-o'           "$z0" \
+  '-v,-C,1'         "$A$B$rC$s$rE$F$G$rH$rI$J$K$L$rM$z0" \
+  '-v,-C,1,-o'      "$rc$s$re$rh$ri$rm$z0" \
+  '-v,-C,1,--group=XYZ' "$A$B$rC$S$rE$F$G$rH$rI$J$K$L$rM$z0" \
+  '-v,-C,1,--no-gr' "$A$B$rC$rE$F$G$rH$rI$J$K$L$rM$z0" \
+  '-4,-1'           "$rB$C$D$E$rF$rG$H$I$rJ$s$rL$M$N$z0" \
+  '-4,-v,-1'        "$A$B$rC$s$rE$F$G$rH$rI$J$K$L$rM$z0" \
+  '-m,1,-v'         "$A$z0$XB$XC$XD$XE$XF$XG$XH$XI$XJ$XK$XL$XM$XN" \
+  '-m,1,-v,-o'      "$z0$XB$XC$XD$XE$XF$XG$XH$XI$XJ$XK$XL$XM$XN" \
+  '-m,1,-v,-C,1'    "$A$rB$z0$XB$XC$XD$XE$XF$XG$XH$XI$XJ$XK$XL$XM$XN" \
+  '-m,1,-v,-C,1,-o' "$z0$XB$XC$XD$XE$XF$XG$XH$XI$XJ$XK$XL$XM$XN" \
+  '-m,2,-v'         "$A$B$z0$XC$XD$XE$XF$XG$XH$XI$XJ$XK$XL$XM$XN" \
+  '-m,2,-v,-o'      "$z0$XC$XD$XE$XF$XG$XH$XI$XJ$XK$XL$XM$XN" \
+  '-m,3,-v'         "$A$B$F$z0$XG$XH$XI$XJ$XK$XL$XM$XN" \
+  '-m,3,-v,-o'      "$z0$XG$XH$XI$XJ$XK$XL$XM$XN" \
+  '-m,3,-v,-C,1'    "$A$B$rC$s$rE$F$rG$z0$XG$XH$XI$XJ$XK$XL$XM$XN" \
+  '-m,3,-v,-C,1,-o' "$rc$s$re$z0$XG$XH$XI$XJ$XK$XL$XM$XN" \
+  x
+shift
+# Comment out cases that are known to fail. These should be uncommented after the 2.5.4 release. TAA.
+# These should be added back in above and fixed in the code. TAA.
+#  '-m,5,-C,1'       "$rB$C$D$E$rF$rG$H$I$z0$XJ$XK$XL$XM$XN" \
+#  '-m,2,-v,-C,1'    "$A$B$z0$XC$XD$XE$XF$XG$XH$XI$XJ$XK$XL$XM$XN" \
+#  '-m,2,-v,-C,1,-o' "$z0$XC$XD$XE$XF$XG$XH$XI$XJ$XK$XL$XM$XN" \
+
+# Test execution and reporting.
+t=1
+while test xx != "x$1"; do
+  opts=$(echo "$1" | sed 's/,/ /g')
+  expect="$2"
+  shift 2
+
+  output=$({ grep -F -n -b $opts yes 2>/dev/null; echo "?$?"; sed 's!^!X!'; } < "$yn" | tr '\n' '/')
+
+  if test "$output" != "$expect" || test "$VERBOSE" = "1"; then
+    echo " Test #$t:  { grep -F -n -b $opts yes; echo \"?\$?\"; sed 's!^!X!'; }"
+    echo "  output:  \"$output\""
+  fi
+  if test "$output" != "$expect"; then
+    echo "  expect:  \"$expect\""
+    echo '    FAIL'
+    failures=1
+  elif test "$VERBOSE" = "1"; then
+    echo '    PASS'
+  fi
+
+  t=$(expr $t + 1)
+done
+
+Exit $failures
diff --git a/src/grep/tests/z-anchor-newline b/src/grep/tests/z-anchor-newline
new file mode 100755
index 0000000..cacce66
--- /dev/null
+++ b/src/grep/tests/z-anchor-newline
@@ -0,0 +1,42 @@
+#!/bin/sh
+# grep -z with an anchor in the regex could mistakenly match text
+# including a newline.
+
+# Copyright 2016-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+require_en_utf8_locale_
+require_compiled_in_MB_support
+LC_ALL=en_US.UTF-8
+
+printf 'a\nb\0' > in || framework_failure_
+
+fail=0
+
+# These three would all mistakenly match, because the [a-b] range
+# forced the non-DFA (regexp-using) code path.
+returns_ 1 grep -z '^[a-b]*$' in || fail=1
+returns_ 1 grep -z 'a[a-b]*$' in || fail=1
+returns_ 1 grep -z '^[a-b]*b' in || fail=1
+
+# Test these for good measure; they exercise the DFA code path
+# and always worked
+returns_ 1 grep -z '^[ab]*$' in || fail=1
+returns_ 1 grep -z 'a[ab]*$' in || fail=1
+returns_ 1 grep -z '^[ab]*b' in || fail=1
+
+Exit $fail
diff --git a/src/grep/thanks-gen b/src/grep/thanks-gen
new file mode 100755
index 0000000..f1c11b3
--- /dev/null
+++ b/src/grep/thanks-gen
@@ -0,0 +1,16 @@
+#!/usr/bin/perl -nl
+# Use Perl's multi-byte alignment code, via sprintf, while
+# performing a rudimentary check for duplicate names and
+# removing duplicate name,email pairs.
+use Encode;
+
+BEGIN { my (%seen, %name) }
+
+chomp;
+my ($name, $email) = split '\0', decode ('UTF-8', $_);
+
+$seen{$name}++
+  and warn "$0: THANKS.in: duplicate name: $name\n";
+
+print encode ('UTF-8', sprintf ('%-36s', $name)), $email
+  unless $seen{"$name\0$email"}++;
diff --git a/src/kDeDup/Makefile.kmk b/src/kDeDup/Makefile.kmk
new file mode 100644
index 0000000..5fe5213
--- /dev/null
+++ b/src/kDeDup/Makefile.kmk
@@ -0,0 +1,35 @@
+# $Id: Makefile.kmk 3012 2016-11-07 11:53:11Z bird $
+## @file
+# Sub-makefile for kDeDup.
+#
+
+#
+# Copyright (c) 2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ../..
+include $(KBUILD_PATH)/subheader.kmk
+
+PROGRAMS += kDeDup
+kDeDup_TEMPLATE        = BIN
+kDeDup_LIBS            = $(LIB_KUTIL)
+kDeDup_SOURCES         = kDeDup.c
+
+include $(FILE_KBUILD_SUB_FOOTER)
+
diff --git a/src/kDeDup/kDeDup.c b/src/kDeDup/kDeDup.c
new file mode 100644
index 0000000..58e48cc
--- /dev/null
+++ b/src/kDeDup/kDeDup.c
@@ -0,0 +1,1148 @@
+/* $Id: kDeDup.c 3296 2019-01-22 21:29:08Z bird $ */
+/** @file
+ * kDeDup - Utility that finds duplicate files, optionally hardlinking them.
+ */
+
+/*
+ * Copyright (c) 2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kTypes.h>
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <wchar.h>
+#if K_OS != K_OS_WINDOWS
+# include <stdlib.h>
+# include <unistd.h>
+# include <sys/fcntl.h>
+# include <sys/stat.h>
+#endif
+
+#include "md5.h"
+//#include "sha2.h"
+
+#if K_OS == K_OS_WINDOWS
+# include "nt/ntstuff.h"
+# include "nt/ntstat.h"
+# include "nt/fts-nt.h"
+# include "nt/nthlp.h"
+# include "nt/ntunlink.h"
+#else
+# include "fts.h"
+#endif
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+/**
+ * The key is made up of two cryptographic hashes, collisions are
+ * highly unlikely (once SHA2 is implemented).
+ */
+typedef struct KDUPFILENODEKEY
+{
+    /** The MD5 digest of the file. */
+    KU8             abMd5[16];
+    /** The 256-bit SHA-2 digest of the file. */
+    KU8             abSha2[32];
+} KDUPFILENODEKEY;
+/** Pointer to a file node.*/
+typedef struct KDUPFILENODE *PKDUPFILENODE;
+/**
+ * Hash tree node.
+ */
+typedef struct KDUPFILENODE
+{
+    /** The is made up of two hashes. */
+    KDUPFILENODEKEY mKey;
+    /** Left branch. */
+    PKDUPFILENODE   mpLeft;
+    /** Right branch. */
+    PKDUPFILENODE   mpRight;
+    /** Tree height (hmm). */
+    KU8             mHeight;
+
+    /** The inode number. */
+    KU64            uInode;
+    /** The device number. */
+    KU64            uDev;
+
+    /** Pointer to next hard linked node (same inode and udev values). */
+    PKDUPFILENODE   pNextHardLink;
+    /** Pointer to next duplicate node. */
+    PKDUPFILENODE   pNextDup;
+    /** Pointer to next duplicate node on the global list. */
+    PKDUPFILENODE   pNextGlobalDup;
+
+    /** The path to this file (variable size). */
+#if K_OS == K_OS_WINDOWS
+    wchar_t         wszPath[1];
+#else
+    char            szPath[1];
+#endif
+} KDUPFILENODE;
+
+#if K_OS == K_OS_WINDOWS
+# define PATH_PRI    "ls"
+# define PATH_MEMB   wszPath
+# define FTS_ACCPATH fts_wcsaccpath
+#else
+# define PATH_PRI    "s"
+# define PATH_MEMB   szPath
+# define FTS_ACCPATH fts_accpath
+#endif
+
+/*#define KAVL_EQUAL_ALLOWED*/
+#define KAVL_CHECK_FOR_EQUAL_INSERT
+#define KAVL_MAX_STACK          32
+/*#define KAVL_RANGE */
+/*#define KAVL_OFFSET */
+/*#define KAVL_STD_KEY_COMP*/
+#define KAVLKEY                 KDUPFILENODEKEY
+#define KAVLNODE                KDUPFILENODE
+#define KAVL_FN(name)           kDupFileTree_ ## name
+#define KAVL_TYPE(prefix,name)  prefix ## KDUPFILENODE ## name
+#define KAVL_INT(name)          KDUPFILENODEINT ## name
+#define KAVL_DECL(rettype)      static rettype
+#define KAVL_G(key1, key2)      ( memcmp(&(key1), &(key2), sizeof(KDUPFILENODEKEY)) >  0 )
+#define KAVL_E(key1, key2)      ( memcmp(&(key1), &(key2), sizeof(KDUPFILENODEKEY)) == 0 )
+#define KAVL_NE(key1, key2)     ( memcmp(&(key1), &(key2), sizeof(KDUPFILENODEKEY)) != 0 )
+
+#define register
+#include <k/kAvlTmpl/kAvlBase.h>
+//#include <k/kAvlTmpl/kAvlDoWithAll.h>
+//#include <k/kAvlTmpl/kAvlEnum.h> - busted
+#include <k/kAvlTmpl/kAvlGet.h>
+//#include <k/kAvlTmpl/kAvlGetBestFit.h>
+//#include <k/kAvlTmpl/kAvlGetWithParent.h>
+//#include <k/kAvlTmpl/kAvlRemove2.h>
+//#include <k/kAvlTmpl/kAvlRemoveBestFit.h>
+#include <k/kAvlTmpl/kAvlUndef.h>
+#undef register
+
+
+/** Pointer to a size tree node. */
+typedef struct KDUPSIZENODE *PKDUPSIZENODE;
+/**
+ * Size tree node.
+ */
+typedef struct KDUPSIZENODE
+{
+    /** The file size. */
+    KU64            mKey;
+    /** Left branch. */
+    PKDUPSIZENODE   mpLeft;
+    /** Right branch. */
+    PKDUPSIZENODE   mpRight;
+    /** Tree height (hmm). */
+    KU8             mHeight;
+    /** Number of files. */
+    KU32            cFiles;
+    /** Tree with same sized files.
+     * When cFiles is 1 the root node does not have hashes calculated yet.  */
+    KDUPFILENODEROOT FileRoot;
+} KDUPSIZENODE;
+
+/*#define KAVL_EQUAL_ALLOWED*/
+#define KAVL_CHECK_FOR_EQUAL_INSERT
+#define KAVL_MAX_STACK          32
+/*#define KAVL_RANGE */
+/*#define KAVL_OFFSET */
+#define KAVL_STD_KEY_COMP
+#define KAVLKEY                 KU64
+#define KAVLNODE                KDUPSIZENODE
+#define KAVL_FN(name)           kDupSizeTree_ ## name
+#define KAVL_TYPE(prefix,name)  prefix ## KDUPSIZENODE ## name
+#define KAVL_INT(name)          KDUPSIZENODEINT ## name
+#define KAVL_DECL(rettype)      static rettype
+
+#include <k/kAvlTmpl/kAvlBase.h>
+//#include <k/kAvlTmpl/kAvlDoWithAll.h>
+//#include <k/kAvlTmpl/kAvlEnum.h> - busted
+#include <k/kAvlTmpl/kAvlGet.h>
+//#include <k/kAvlTmpl/kAvlGetBestFit.h>
+//#include <k/kAvlTmpl/kAvlGetWithParent.h>
+//#include <k/kAvlTmpl/kAvlRemove2.h>
+//#include <k/kAvlTmpl/kAvlRemoveBestFit.h>
+#include <k/kAvlTmpl/kAvlUndef.h>
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** The verbosity level. */
+static unsigned g_cVerbosity                    = 0;
+
+/** Whether to recurse into subdirectories. */
+static KBOOL    g_fRecursive                    = K_FALSE;
+/** Whether to recurse into symlinked subdirectories. */
+static KBOOL    g_fRecursiveViaSymlinks         = K_FALSE;
+/** Whether to follow symbolicly linked files. */
+static KBOOL    g_fFollowSymlinkedFiles         = K_TRUE;
+
+/** Minimum file size to care about.   */
+static KU64     g_cbMinFileSize                 = 1;
+/** Maximum file size to care about.   */
+static KU64     g_cbMaxFileSize                 = KU64_MAX;
+
+/** The root of the size tree.   */
+static KDUPSIZENODEROOT g_SizeRoot;
+
+/** Global list of duplicate file with duplicates.
+ * @remarks This only contains the files in the hash tree, not the ones on
+ *          the KDUPFILENODE::pNextDup list. */
+static PKDUPFILENODE    g_pDuplicateHead        = NULL;
+/** Where to insert the next file with duplicates. */
+static PKDUPFILENODE   *g_ppNextDuplicate       = &g_pDuplicateHead;
+
+/** Number of files we're tracking. */
+static KU64             g_cFiles                = 0;
+/** Number of hardlinked files or files entered more than once. */
+static KU64             g_cHardlinked           = 0;
+/** Number of duplicates files (not hardlinked). */
+static KU64             g_cDuplicates           = 0;
+/** Number of duplicates files that can be hardlinked. */
+static KU64             g_cDuplicatesSaved      = 0;
+/** Size that could be saved if the duplicates were hardlinked. */
+static KU64             g_cbDuplicatesSaved     = 0;
+
+
+
+/**
+ * Wrapper around malloc() that complains when out of memory.
+ *
+ * @returns Pointer to allocated memory
+ * @param   cb      The size of the memory to allocate.
+ */
+static void *kDupAlloc(KSIZE cb)
+{
+    void *pvRet = malloc(cb);
+    if (pvRet)
+        return pvRet;
+    fprintf(stderr, "kDeDup: error: out of memory! (cb=%#zx)\n", cb);
+    return NULL;
+}
+
+/** Wrapper around free() for symmetry. */
+#define kDupFree(ptr) free(ptr)
+
+#if K_OS != K_OS_WINDOWS
+/** Wrapper around read() that hides EINTR and such. */
+static ssize_t kDupReadFile(int fd, void *pvBuf, size_t cbToRead)
+{
+    ssize_t cbRet;
+    do
+        cbRet = read(fd, pvBuf, cbToRead);
+    while (cbRet < 0 && errno == EINTR);
+    if (cbRet > 0 && (size_t)cbRet != cbToRead)
+    {
+        for (;;)
+        {
+            size_t cbLeft = cbToRead - (size_t)cbRet;
+            ssize_t cbPart;
+            do
+                cbPart = read(fd, (KU8 *)pvBuf + (size_t)cbRet, cbLeft);
+            while (cbPart < 0 && errno == EINTR);
+            if (cbPart <= 0)
+                break;
+            cbRet += cbPart;
+        }
+    }
+    return cbRet;
+}
+#endif
+
+
+static void kDupHashFile(PKDUPFILENODE pFileNode, FTSENT *pFtsEnt)
+{
+    KSIZE           i;
+    PKDUPFILENODE  *ppHash;
+
+    /*
+     * Open the file.
+     */
+#if K_OS == K_OS_WINDOWS
+    HANDLE hFile;
+    if (pFtsEnt && pFtsEnt->fts_parent && pFtsEnt->fts_parent->fts_dirfd != INVALID_HANDLE_VALUE)
+        hFile = birdOpenFileExW(pFtsEnt->fts_parent->fts_dirfd, pFtsEnt->fts_wcsname,
+                                FILE_READ_DATA | SYNCHRONIZE,
+                                FILE_ATTRIBUTE_NORMAL,
+                                FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                FILE_OPEN,
+                                FILE_NON_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+                                OBJ_CASE_INSENSITIVE);
+    else
+        hFile = birdOpenFileExW(NULL, pFileNode->wszPath,
+                                FILE_READ_DATA | SYNCHRONIZE,
+                                FILE_ATTRIBUTE_NORMAL,
+                                FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                FILE_OPEN,
+                                FILE_NON_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+                                OBJ_CASE_INSENSITIVE);
+    if (hFile != INVALID_HANDLE_VALUE)
+#else  /* K_OS != K_OS_WINDOWS */
+# ifdef O_BINARY
+    int fd = open(pFileNode->szPath, O_RDONLY | O_BINARY);
+# else
+    int fd = open(pFileNode->szPath, O_RDONLY);
+# endif
+    if (fd >= 0)
+#endif /* K_OS != K_OS_WINDOWS */
+    {
+        /*
+         * Init the hash calculation contexts.
+         */
+        struct MD5Context Md5Ctx;
+        //SHA256CONTEXT Sha256Ctx;
+        MD5Init(&Md5Ctx);
+        //Sha256Init(&Sha256Ctx);
+
+        /*
+         * Process the file chunk by chunk.
+         *
+         * We could complicate this by memory mapping medium sized files, but
+         * those kind of complications can wait.
+         */
+        for (;;)
+        {
+            static KU8          s_abBuffer[2*1024*1024];
+#if K_OS == K_OS_WINDOWS
+            MY_NTSTATUS         rcNt;
+            MY_IO_STATUS_BLOCK  Ios;
+            Ios.Information = -1;
+            Ios.u.Status    = -1;
+            rcNt = g_pfnNtReadFile(hFile, NULL /*hEvent*/, NULL /*pfnApc*/, NULL /*pvApcCtx*/,
+                                   &Ios, s_abBuffer, sizeof(s_abBuffer), NULL /*poffFile*/, NULL /*puKey*/);
+            if (MY_NT_SUCCESS(rcNt))
+            {
+                MD5Update(&Md5Ctx, s_abBuffer, (unsigned)Ios.Information);
+                //SHA256Update(&Sha256Ctx, s_abBuffer, Ios.Information);
+            }
+            else if (rcNt != STATUS_END_OF_FILE)
+            {
+                fprintf(stderr, "kDeDup: warning: Error reading '%ls': %#x\n", pFileNode->wszPath, rcNt);
+                break;
+            }
+
+            /* Check for end of file. */
+            if (   rcNt == STATUS_END_OF_FILE
+                || Ios.Information < sizeof(s_abBuffer))
+            {
+                MD5Final(pFileNode->mKey.abMd5, &Md5Ctx);
+                //Sha256Final(pFileNode->mKey.abSha2, &Sha256Ctx);
+
+                birdCloseFile(hFile);
+                return;
+            }
+#else  /* K_OS != K_OS_WINDOWS */
+            ssize_t cbRead = kDupReadFile(fd, s_abBuffer, sizeof(s_abBuffer));
+            if (cbRead > 0)
+            {
+                MD5Update(&Md5Ctx, s_abBuffer, (unsigned)cbRead);
+                //SHA256Update(&Sha256Ctx, s_abBuffer, (unsigned)cbRead);
+            }
+            else if (cbRead == 0)
+            {
+                MD5Final(pFileNode->mKey.abMd5, &Md5Ctx);
+                //Sha256Final(pFileNode->mKey.abSha2, &Sha256Ctx);
+                close(fd);
+                return;
+            }
+            else
+            {
+                fprintf(stderr, "kDeDup: warning: Error reading '%s': %s (%d)\n", pFileNode->szPath, strerror(errno), errno);
+                break;
+            }
+#endif /* K_OS != K_OS_WINDOWS */
+        }
+
+#if K_OS == K_OS_WINDOWS
+        birdCloseFile(hFile);
+#else
+        close(fd);
+#endif
+    }
+    else
+        fprintf(stderr, "kDeDup: warning: Failed to open '%" PATH_PRI "': %s (%d)\n",
+                pFileNode->PATH_MEMB, strerror(errno), errno);
+
+    /*
+     * Hashing failed.  We fake the digests by repeating the node pointer value
+     * again and again, holding a collision with both SHA2 and MD5 with similar
+     * digest pattern for highly unlikely.
+     */
+    ppHash = (PKDUPFILENODE *)&pFileNode->mKey;
+    i = sizeof(pFileNode->mKey) / sizeof(*ppHash);
+    while (i-- > 0)
+        *ppHash++ = pFileNode;
+}
+
+
+/**
+ * Deal with one file, adding it to the tree if it matches the criteria.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pFtsEnt         The FTS entry for the file.
+ */
+static int kDupDoFile(FTSENT *pFtsEnt)
+{
+    KU64 cbFile;
+#if K_OS == K_OS_WINDOWS
+    struct stat const *pStat = &pFtsEnt->fts_stat;
+#else
+    struct stat const *pStat = pFtsEnt->fts_statp;
+#endif
+
+    if (g_cVerbosity >= 2)
+        printf("debug: kDupDoFile(%" PATH_PRI ")\n", pFtsEnt->FTS_ACCPATH);
+
+    /*
+     * Check that it's within the size range.
+     */
+    cbFile = pStat->st_size;
+    if (   cbFile >= g_cbMinFileSize
+        && cbFile <= g_cbMaxFileSize)
+    {
+        /*
+         * Start out treating this like a unique file with a unique size, i.e.
+         * allocate all the structures we might possibly need.
+         */
+#if K_OS == K_OS_WINDOWS
+        size_t        cbAccessPath = (wcslen(pFtsEnt->fts_wcsaccpath) + 1) * sizeof(wchar_t);
+#else
+        size_t        cbAccessPath = strlen(pFtsEnt->fts_accpath) + 1;
+#endif
+        PKDUPFILENODE pFileNode = (PKDUPFILENODE)kDupAlloc(sizeof(*pFileNode) + cbAccessPath);
+        PKDUPSIZENODE pSizeNode = (PKDUPSIZENODE)kDupAlloc(sizeof(*pSizeNode));
+        if (!pFileNode || !pSizeNode)
+            return 3;
+        g_cFiles++;
+
+        memset(&pFileNode->mKey, 0, sizeof(pFileNode->mKey));
+        pFileNode->pNextHardLink    = NULL;
+        pFileNode->pNextDup         = NULL;
+        pFileNode->pNextGlobalDup   = NULL;
+        pFileNode->uDev             = pStat->st_dev;
+        pFileNode->uInode           = pStat->st_ino;
+        memcpy(pFileNode->PATH_MEMB, pFtsEnt->FTS_ACCPATH, cbAccessPath);
+
+        pSizeNode->mKey = cbFile;
+        pSizeNode->cFiles = 1;
+        kDupFileTree_Init(&pSizeNode->FileRoot);
+        kDupFileTree_Insert(&pSizeNode->FileRoot, pFileNode);
+
+        /*
+         * Try insert it.
+         */
+        if (kDupSizeTree_Insert(&g_SizeRoot, pSizeNode))
+        { /* unique size, nothing more to do for now. */ }
+        else
+        {
+            /*
+             * More than one file with this size.  We may need to hash the
+             * hash the file we encountered with this size, if this is the
+             * second one.  In that case we should check for hardlinked or
+             * double entering of the file first as well.
+             */
+            kDupFree(pSizeNode);
+            pSizeNode = kDupSizeTree_Get(&g_SizeRoot, cbFile);
+            if (pSizeNode->cFiles == 1)
+            {
+                PKDUPFILENODE pFirstFileNode = pSizeNode->FileRoot.mpRoot;
+                if (   pFirstFileNode->uInode == pFileNode->uInode
+                    && pFileNode->uInode != 0
+                    && pFirstFileNode->uDev   == pFileNode->uDev)
+                {
+                    pFileNode->pNextHardLink      = pFirstFileNode->pNextHardLink;
+                    pFirstFileNode->pNextHardLink = pFileNode;
+                    if (g_cVerbosity >= 1)
+                        printf("Found hardlinked: '%" PATH_PRI "' -> '%" PATH_PRI "' (ino:%#" KX64_PRI " dev:%#" KX64_PRI ")\n",
+                               pFileNode->PATH_MEMB, pFirstFileNode->PATH_MEMB, pFileNode->uInode, pFileNode->uDev);
+                    g_cHardlinked += 1;
+                    return 0;
+                }
+
+                kDupHashFile(pFirstFileNode, NULL);
+            }
+            kDupHashFile(pFileNode, pFtsEnt);
+
+            if (kDupFileTree_Insert(&pSizeNode->FileRoot, pFileNode))
+            {  /* great, unique content */ }
+            else
+            {
+                /*
+                 * Duplicate content.  Could be hardlinked or a duplicate entry.
+                 */
+                PKDUPFILENODE pDupFileNode = kDupFileTree_Get(&pSizeNode->FileRoot, pFileNode->mKey);
+                if (   pDupFileNode->uInode == pFileNode->uInode
+                    && pFileNode->uInode != 0
+                    && pDupFileNode->uDev   == pFileNode->uDev)
+                {
+                    pFileNode->pNextHardLink = pDupFileNode->pNextHardLink;
+                    pDupFileNode->pNextHardLink = pFileNode;
+                    if (g_cVerbosity >= 1)
+                        printf("Found hardlinked: '%" PATH_PRI "' -> '%" PATH_PRI "' (ino:%#" KX64_PRI " dev:%#" KX64_PRI ")\n",
+                               pFileNode->PATH_MEMB, pDupFileNode->PATH_MEMB, pFileNode->uInode, pFileNode->uDev);
+                    g_cHardlinked += 1;
+                }
+                else
+                {
+                    KBOOL fDifferentDev;
+
+                    /* Genuinly duplicate (or inode numbers are busted). */
+                    if (!pDupFileNode->pNextDup)
+                    {
+                        *g_ppNextDuplicate = pDupFileNode;
+                        g_ppNextDuplicate = &pDupFileNode->pNextGlobalDup;
+                    }
+
+                    /* The list is sorted by device to better facility hardlinking later. */
+                    while (   (fDifferentDev = pDupFileNode->uDev != pFileNode->uDev)
+                           && pDupFileNode->pNextDup)
+                        pDupFileNode = pDupFileNode->pNextDup;
+
+                    pFileNode->pNextDup = pDupFileNode->pNextDup;
+                    pDupFileNode->pNextDup = pFileNode;
+
+                    g_cDuplicates += 1;
+                    if (!fDifferentDev)
+                    {
+                        g_cDuplicatesSaved += 1;
+#if K_OS == K_OS_WINDOWS
+                        g_cbDuplicatesSaved += pStat->st_blocks * BIRD_STAT_BLOCK_SIZE;
+#else
+                        g_cbDuplicatesSaved += pStat->st_size;
+#endif
+                        if (g_cVerbosity >= 1)
+                            printf("Found duplicate: '%" PATH_PRI "' <-> '%" PATH_PRI "'\n",
+                                   pFileNode->PATH_MEMB, pDupFileNode->PATH_MEMB);
+                    }
+                    else if (g_cVerbosity >= 1)
+                        printf("Found duplicate: '%" PATH_PRI "' <-> '%" PATH_PRI "' (devices differ).\n",
+                               pFileNode->PATH_MEMB, pDupFileNode->PATH_MEMB);
+                }
+            }
+        }
+    }
+    else if (g_cVerbosity >= 1)
+        printf("Skipping '%" PATH_PRI "' because %" KU64_PRI " bytes is outside the size range.\n", pFtsEnt->FTS_ACCPATH, cbFile);
+    return 0;
+}
+
+
+/**
+ * Process the non-option arguments, creating the file tree.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   papwszFtsArgs   The input in argv style.
+ * @param   fFtsOptions     The FTS options.
+ */
+#if K_OS == K_OS_WINDOWS
+static int kDupReadAll(wchar_t **papwszFtsArgs, unsigned fFtsOptions)
+#else
+static int kDupReadAll(char **papszFtsArgs, unsigned fFtsOptions)
+#endif
+{
+    int  rcExit = 0;
+#if K_OS == K_OS_WINDOWS
+    FTS *pFts = nt_fts_openw(papwszFtsArgs, fFtsOptions, NULL /*pfnCompare*/);
+#else
+    FTS *pFts = fts_open(papszFtsArgs, fFtsOptions, NULL /*pfnCompare*/);
+#endif
+    if (pFts != NULL)
+    {
+        for (;;)
+        {
+#if K_OS == K_OS_WINDOWS
+            FTSENT *pFtsEnt = nt_fts_read(pFts);
+#else
+            FTSENT *pFtsEnt = fts_read(pFts);
+#endif
+            if (pFtsEnt)
+            {
+                switch (pFtsEnt->fts_info)
+                {
+                    case FTS_F:
+                        rcExit = kDupDoFile(pFtsEnt);
+                        if (rcExit == 0)
+                            continue;
+                        break;
+
+                    case FTS_D:
+                        if (   g_fRecursive
+                            || pFtsEnt->fts_level == FTS_ROOTLEVEL) /* enumerate dirs on the command line */
+                            continue;
+#if K_OS == K_OS_WINDOWS
+                        rcExit = nt_fts_set(pFts, pFtsEnt, FTS_SKIP);
+#else
+                        rcExit = fts_set(pFts, pFtsEnt, FTS_SKIP);
+#endif
+                        if (rcExit == 0)
+                            continue;
+                        fprintf(stderr, "kDeDup: internal error: nt_fts_set failed!\n");
+                        rcExit = 1;
+                        break;
+
+                    case FTS_DP:
+                        /* nothing to do here. */
+                        break;
+
+                    case FTS_SL:
+                    {
+#if K_OS == K_OS_WINDOWS
+                        /* The nice thing on windows is that we already know whether it's a
+                           directory or file when encountering the symbolic link. */
+                        if (   (pFtsEnt->fts_stat.st_isdirsymlink ? g_fRecursiveViaSymlinks : g_fFollowSymlinkedFiles)
+                            && pFtsEnt->fts_number == 0)
+#else
+                        struct stat St;
+                        if (   pFtsEnt->fts_number == 0
+                            && (   (g_fRecursiveViaSymlinks && g_fFollowSymlinkedFiles)
+                                || (   stat(pFtsEnt->fts_accpath, &St) == 0
+                                    && (S_ISDIR(St.st_mode) ? g_fRecursiveViaSymlinks : g_fFollowSymlinkedFiles))))
+#endif
+                        {
+                            pFtsEnt->fts_number++;
+#if K_OS == K_OS_WINDOWS
+                            rcExit = nt_fts_set(pFts, pFtsEnt, FTS_FOLLOW);
+#else
+                            rcExit = fts_set(pFts, pFtsEnt, FTS_FOLLOW);
+#endif
+                            if (rcExit == 0)
+                                continue;
+                            fprintf(stderr, "kDeDup: internal error: nt_fts_set failed!\n");
+                            rcExit = 1;
+                        }
+                        break;
+                    }
+
+                    case FTS_DC:
+                        fprintf(stderr, "kDeDup: warning: Ignoring cycle '%" PATH_PRI "'!\n", pFtsEnt->FTS_ACCPATH);
+                        continue;
+
+                    case FTS_NS:
+                        fprintf(stderr, "kDeDup: warning: Failed to stat '%" PATH_PRI "': %s (%d)\n",
+                                pFtsEnt->FTS_ACCPATH, strerror(pFtsEnt->fts_errno), pFtsEnt->fts_errno);
+                        continue;
+
+                    case FTS_DNR:
+                        fprintf(stderr, "kDeDup: error: Error reading directory '%" PATH_PRI "': %s (%d)\n",
+                                pFtsEnt->FTS_ACCPATH, strerror(pFtsEnt->fts_errno), pFtsEnt->fts_errno);
+                        rcExit = 1;
+                        break;
+
+                    case FTS_ERR:
+                        fprintf(stderr, "kDeDup: error: Error on '%" PATH_PRI "': %s (%d)\n",
+                                pFtsEnt->FTS_ACCPATH, strerror(pFtsEnt->fts_errno), pFtsEnt->fts_errno);
+                        rcExit = 1;
+                        break;
+
+
+                    /* ignore */
+                    case FTS_SLNONE:
+                    case FTS_DEFAULT:
+                        break;
+
+                    /* Not supposed to get here. */
+                    default:
+                        fprintf(stderr, "kDeDup: internal error: fts_info=%d - '%" PATH_PRI "'\n",
+                                pFtsEnt->fts_info, pFtsEnt->FTS_ACCPATH);
+                        rcExit = 1;
+                        break;
+                }
+            }
+            else if (errno == 0)
+                break;
+            else
+            {
+                fprintf(stderr, "kDeDup: error: nt_fts_read failed: %s (%d)\n", strerror(errno), errno);
+                rcExit = 1;
+                break;
+            }
+        }
+
+#if K_OS == K_OS_WINDOWS
+        if (nt_fts_close(pFts) != 0)
+#else
+        if (fts_close(pFts) != 0)
+#endif
+        {
+            fprintf(stderr, "kDeDup: error: nt_fts_close failed: %s (%d)\n", strerror(errno), errno);
+            rcExit = 1;
+        }
+    }
+    else
+    {
+        fprintf(stderr, "kDeDup: error: nt_fts_openw failed: %s (%d)\n", strerror(errno), errno);
+        rcExit = 1;
+    }
+
+    return rcExit;
+}
+
+
+/**
+ * Compares the content of the two files.
+ *
+ * @returns 0 if equal, 1 if not equal, -1 on open/read error.
+ * @param   pFile1              The first file.
+ * @param   pFile2              The second file.
+ */
+static int kDupCompareFiles(PKDUPFILENODE pFile1, PKDUPFILENODE pFile2)
+{
+#if K_OS == K_OS_WINDOWS
+    int rcRet = 0;
+    K_NOREF(pFile1);
+    K_NOREF(pFile2);
+    /** @todo compare files. */
+#else
+    int rcRet = -1;
+# ifdef O_BINARY
+    int fOpen = O_RDONLY | O_BINARY;
+# else
+    int fOpen = O_RDONLY;
+# endif
+    /*
+     * Open the two files.
+     */
+    int fd1 = open(pFile1->szPath, fOpen);
+    if (fd1 >= 0)
+    {
+        int fd2 = open(pFile2->szPath, fOpen);
+        if (fd1 >= 0)
+        {
+            /*
+             * Read and compare all the data.
+             */
+            static KU8 s_abBuf1[2*1024*1024];
+            static KU8 s_abBuf2[2*1024*1024];
+            KU64 off = 0;
+            for (;;)
+            {
+                ssize_t cb1 = kDupReadFile(fd1, s_abBuf1, sizeof(s_abBuf1));
+                ssize_t cb2 = kDupReadFile(fd2, s_abBuf2, sizeof(s_abBuf2));
+                if (cb1 < 0 || cb2 < 0)
+                {
+                    if (cb1 < 0)
+                        fprintf(stderr, "kDeDup: error: reading from '%s': %s (%d)\n", pFile1->szPath, strerror(errno), errno);
+                    if (cb2 < 0)
+                        fprintf(stderr, "kDeDup: error: reading from '%s': %s (%d)\n", pFile2->szPath, strerror(errno), errno);
+                    break;
+                }
+                if (cb1 != cb2)
+                {
+                    fprintf(stderr, "kDeDup: warning: '%s' now differs from '%s' in size...\n", pFile1->szPath, pFile2->szPath);
+                    rcRet = 1;
+                    break;
+                }
+                if (cb1 == 0)
+                {
+                    rcRet = 0;
+                    break;
+                }
+                if (memcmp(s_abBuf1, s_abBuf2, cb1) != 0)
+                {
+                    fprintf(stderr, "kDeDup: warning: hash collision: '%s' differs from '%s' (" KX64_PRI " LB %#x)\n",
+                            pFile1->szPath, pFile2->szPath, off, (unsigned)cb1);
+                    rcRet = 1;
+                    break;
+                }
+                off += cb1;
+            }
+
+            close(fd2);
+        }
+        close(fd1);
+    }
+#endif
+    return rcRet;
+}
+
+
+/**
+ * Hardlink duplicates.
+ */
+static int kDupHardlinkDuplicates(void)
+{
+    int           rcExit = 0;
+    PKDUPFILENODE pFileNode;
+    for (pFileNode = g_pDuplicateHead; pFileNode != NULL; pFileNode = pFileNode->pNextGlobalDup)
+    {
+        PKDUPFILENODE pTargetFile = pFileNode;
+        PKDUPFILENODE pDupFile;
+        for (pDupFile = pFileNode->pNextDup; pDupFile != NULL; pDupFile = pDupFile->pNextDup)
+        {
+            /*
+             * Can only hard link if the files are on the same device.
+             */
+            if (pDupFile->uDev == pTargetFile->uDev)
+            {
+                if (kDupCompareFiles(pDupFile, pTargetFile) == 0)
+                {
+                    /*
+                     * Start by renaming the orinal file before we try create the hard link.
+                     */
+#if K_OS == K_OS_WINDOWS
+                    static const wchar_t s_wszBackupSuffix[] = L".kDepBackup";
+                    wchar_t wszBackup[0x4000];
+                    size_t  cwcPath = wcslen(pDupFile->wszPath);
+                    if (cwcPath + sizeof(s_wszBackupSuffix) / sizeof(wchar_t) < K_ELEMENTS(wszBackup))
+                    {
+                        memcpy(wszBackup, pDupFile->wszPath, cwcPath * sizeof(wchar_t));
+                        memcpy(&wszBackup[cwcPath], s_wszBackupSuffix, sizeof(s_wszBackupSuffix));
+                        if (MoveFileW(pDupFile->wszPath, wszBackup))
+                        {
+                            if (CreateHardLinkW(pDupFile->wszPath, pTargetFile->wszPath, NULL))
+                            {
+                                if (birdUnlinkForcedW(wszBackup) == 0)
+                                {
+                                    if (g_cVerbosity >= 1)
+                                        printf("Hardlinked '%ls' to '%ls'.\n", pDupFile->wszPath, pTargetFile->wszPath);
+                                }
+                                else
+                                {
+                                    fprintf(stderr, "kDeDup: fatal: failed to delete '%ls' after hardlinking: %s (%d)\n",
+                                            wszBackup, strerror(errno), errno);
+                                    return 8;
+                                }
+                            }
+                            else
+                            {
+                                fprintf(stderr, "kDeDup: error: failed to hard link '%ls' to '%ls': %u\n",
+                                        pDupFile->wszPath, wszBackup, GetLastError());
+                                if (!MoveFileW(wszBackup, pDupFile->wszPath))
+                                {
+                                    fprintf(stderr, "kDeDup: fatal: Restore '%ls' to '%ls' after hardlinking failed: %u\n",
+                                            wszBackup, pDupFile->wszPath, GetLastError());
+                                    return 8;
+                                }
+                                rcExit = 1;
+                            }
+                        }
+                        else
+                        {
+                            fprintf(stderr, "kDeDup: error: failed to rename '%ls' to '%ls': %u\n",
+                                    pDupFile->wszPath, wszBackup, GetLastError());
+                            rcExit = 1;
+                        }
+                    }
+                    else
+                    {
+                        fprintf(stderr, "kDeDup: error: too long backup path: '%ls'\n", pDupFile->wszPath);
+                        rcExit = 1;
+                    }
+#else  /* K_OS != K_OS_WINDOWS */
+                    static const char s_szBackupSuffix[] = ".kDepBackup";
+                    char szBackup[0x4000];
+                    size_t cchPath = strlen(pDupFile->szPath);
+                    if (cchPath + sizeof(s_szBackupSuffix) < sizeof(szBackup))
+                    {
+                        struct stat StTmp;
+                        memcpy(szBackup, pDupFile->szPath, cchPath);
+                        memcpy(&szBackup[cchPath], s_szBackupSuffix, sizeof(s_szBackupSuffix));
+                        if (stat(szBackup, &StTmp) != 0)
+                        {
+                            if (rename(pDupFile->szPath, szBackup) == 0)
+                            {
+                                if (link(pTargetFile->szPath, pDupFile->szPath) == 0)
+                                {
+                                    if (unlink(szBackup) == 0)
+                                    {
+                                        if (g_cVerbosity >= 1)
+                                            printf("Hardlinked '%s' to '%s'.\n", pDupFile->szPath, pTargetFile->szPath);
+                                    }
+                                    else
+                                    {
+                                        fprintf(stderr, "kDeDup: fatal: failed to delete '%s' after hardlinking: %s (%d)\n",
+                                                szBackup, strerror(errno), errno);
+                                        return 8;
+                                    }
+                                }
+                                else
+                                {
+                                    fprintf(stderr, "kDeDup: error: failed to hard link '%s' to '%s': %s (%d)\n",
+                                            pDupFile->szPath, szBackup, strerror(errno), errno);
+                                    if (rename(szBackup, pDupFile->szPath) != 0)
+                                    {
+                                        fprintf(stderr, "kDeDup: fatal: Restore '%s' to '%s' after hardlinking failed: %s (%d)\n",
+                                                szBackup, pDupFile->szPath, strerror(errno), errno);
+                                        return 8;
+                                    }
+                                    rcExit = 1;
+                                }
+                            }
+                            else
+                            {
+                                fprintf(stderr, "kDeDup: error: failed to rename '%s' to '%s': %s (%d)\n",
+                                        pDupFile->szPath, szBackup, strerror(errno), errno);
+                                rcExit = 1;
+                            }
+                        }
+                        else
+                        {
+                            fprintf(stderr, "kDeDup: error: failed to rename '%s' to '%s': file already exist (st_mode=%#x)\n",
+                                    pDupFile->szPath, szBackup, StTmp.st_mode);
+                            rcExit = 1;
+                        }
+                    }
+                    else
+                    {
+                        fprintf(stderr, "kDeDup: error: too long backup path: '%s'\n", pDupFile->szPath);
+                        rcExit = 1;
+                    }
+#endif /* K_OS != K_OS_WINDOWS */
+                }
+            }
+            /*
+             * Since the list is sorted by uDev, we now change the target file.
+             */
+            else
+                pTargetFile = pDupFile;
+        }
+    }
+    return rcExit;
+}
+
+
+static int usage(const char *pszName, FILE *pOut)
+{
+    fprintf(pOut,
+            "usage: %s [options] <path1> [path2 [..]]\n"
+            "usage: %s <-V|--version>\n"
+            "usage: %s <-h|--help>\n"
+            , pszName, pszName, pszName);
+    fprintf(pOut,
+            "\n"
+            "Options:\n"
+            "  -H, --dereference-command-line, --no-dereference-command-line\n"
+            "    Follow symbolic links on the command line.\n"
+            "  -L, --dereference\n"
+            "    Follow symbolic links while scanning directories.\n"
+            "  -P, --no-dereference\n"
+            "    Do not follow symbolic links while scanning directories.\n"
+            "  -r, --recursive\n"
+            "    Recurse into subdirectories, but do not follow links to them.\n"
+            "  -R, --recursive-dereference\n"
+            "    Same as -r, but also follow into symlinked subdirectories.\n"
+            "  -x, --one-file-system\n"
+            "    Do not consider other file system (volumes), either down thru a\n"
+            "    mount point or via a symbolic link to a directory.\n"
+            "  --no-one-file-system, --cross-file-systems\n"
+            "    Reverses the effect of --one-file-system.\n"
+            "  -q, --quiet, -v,--verbose\n"
+            "    Controls the output level.\n"
+            "  --hardlink-duplicates\n"
+            "    Hardlink duplicate files to remove duplicates and save space.  By default\n"
+            "    no action is taken and only analysis is done.\n"
+            );
+    return 0;
+}
+
+
+#if K_OS == K_OS_WINDOWS
+int wmain(int argc, wchar_t **argv)
+#else
+int main(int argc, char **argv)
+#endif
+{
+    int             rcExit;
+
+    /*
+     * Process parameters.  Position.
+     */
+    unsigned    cFtsArgs      = 0;
+#if K_OS == K_OS_WINDOWS
+    wchar_t   **papwszFtsArgs = (wchar_t **)calloc(argc + 1, sizeof(wchar_t *));
+    unsigned    fFtsOptions   = FTS_NOCHDIR | FTS_NO_ANSI;
+#else
+    char      **papszFtsArgs  = (char **)calloc(argc + 1, sizeof(char *));
+    unsigned    fFtsOptions   = FTS_NOCHDIR;
+#endif
+    KBOOL       fEndOfOptions = K_FALSE;
+    KBOOL       fHardlinkDups = K_FALSE;
+    int         i;
+    for (i = 1; i < argc; i++)
+    {
+#if K_OS == K_OS_WINDOWS
+        wchar_t *pwszArg = argv[i];
+        if (   *pwszArg == '-'
+            && !fEndOfOptions)
+#else
+        char *pszArg = argv[i];
+        if (   *pszArg == '-'
+            && !fEndOfOptions)
+#endif
+        {
+#if K_OS != K_OS_WINDOWS
+            wchar_t  wszOpt[1024] = { 0 };
+            wchar_t *pwszArg = wszOpt;
+            mbsrtowcs(wszOpt, (const char **)&pszArg, 1024 - 1, NULL);
+#endif
+            wchar_t wcOpt = *++pwszArg;
+            pwszArg++;
+            if (wcOpt == '-')
+            {
+                /* Translate long options. */
+                if (wcscmp(pwszArg, L"help") == 0)
+                    wcOpt = 'h';
+                else if (wcscmp(pwszArg, L"version") == 0)
+                    wcOpt = 'V';
+                else if (wcscmp(pwszArg, L"recursive") == 0)
+                    wcOpt = 'r';
+                else if (wcscmp(pwszArg, L"dereference-recursive") == 0)
+                    wcOpt = 'R';
+                else if (wcscmp(pwszArg, L"dereference") == 0)
+                    wcOpt = 'L';
+                else if (wcscmp(pwszArg, L"dereference-command-line") == 0)
+                    wcOpt = 'H';
+                else if (wcscmp(pwszArg, L"one-file-system") == 0)
+                    wcOpt = 'x';
+                /* Process long options. */
+                else if (*pwszArg == '\0')
+                {
+                    fEndOfOptions = K_TRUE;
+                    continue;
+                }
+                else if (wcscmp(pwszArg, L"no-recursive") == 0)
+                {
+                    g_fRecursive = g_fRecursiveViaSymlinks = K_FALSE;
+                    continue;
+                }
+                else if (wcscmp(pwszArg, L"no-dereference-command-line") == 0)
+                {
+                    fFtsOptions &= ~FTS_COMFOLLOW;
+                    continue;
+                }
+                else if (   wcscmp(pwszArg, L"no-one-file-system") == 0
+                         || wcscmp(pwszArg, L"cross-file-systems") == 0)
+                {
+                    fFtsOptions &= ~FTS_XDEV;
+                    continue;
+                }
+                else if (wcscmp(pwszArg, L"hardlink-duplicates") == 0)
+                {
+                    fHardlinkDups = K_TRUE;
+                    continue;
+                }
+                else
+                {
+                    fprintf(stderr, "kDeDup: syntax error: Unknown option '--%ls'\n", pwszArg);
+                    return 2;
+                }
+            }
+
+            /* Process one or more short options. */
+            do
+            {
+                switch (wcOpt)
+                {
+                    case 'r': /* --recursive */
+                        g_fRecursive = K_TRUE;
+                        break;
+
+                    case 'R': /* --dereference-recursive */
+                        g_fRecursive = g_fRecursiveViaSymlinks = K_TRUE;
+                        break;
+
+                    case 'H': /* --dereference-command-line */
+                        fFtsOptions |= FTS_COMFOLLOW;
+                        break;
+
+                    case 'L': /* --dereference*/
+                        g_fFollowSymlinkedFiles = K_TRUE;
+                        break;
+
+                    case 'x': /* --one-file-system*/
+                        fFtsOptions |= FTS_XDEV;
+                        break;
+
+                    case 'q':
+                        g_cVerbosity = 0;
+                        break;
+
+                    case 'v':
+                        g_cVerbosity++;
+                        break;
+
+
+                    case 'h':
+                    case '?':
+                        return usage("kDeDup", stdout);
+
+                    case 'V':
+                        printf("0.0.1\n");
+                        return 0;
+
+                    default:
+#if K_OS == K_OS_WINDOWS
+                        fprintf(stderr, "kDeDup: syntax error: Unknown option '-%lc'\n", wcOpt);
+#else
+                        fprintf(stderr, "kDeDup: syntax error: Unknown option '-%c'\n", (int)wcOpt);
+#endif
+                        return 2;
+                }
+
+                wcOpt = *pwszArg++;
+            } while (wcOpt != '\0');
+        }
+        else
+        {
+            /*
+             * Append non-option arguments to the FTS argument vector.
+             */
+#if K_OS == K_OS_WINDOWS
+            papwszFtsArgs[cFtsArgs] = pwszArg;
+#else
+            papszFtsArgs[cFtsArgs] = pszArg;
+#endif
+            cFtsArgs++;
+        }
+    }
+
+    /*
+     * Do the FTS processing.
+     */
+    kDupSizeTree_Init(&g_SizeRoot);
+#if K_OS == K_OS_WINDOWS
+    rcExit = kDupReadAll(papwszFtsArgs, fFtsOptions);
+#else
+    rcExit = kDupReadAll(papszFtsArgs, fFtsOptions);
+#endif
+    if (rcExit == 0)
+    {
+        /*
+         * Display the result.
+         */
+        printf("Found %" KU64_PRI " duplicate files, out which %" KU64_PRI " can be hardlinked saving %" KU64_PRI " bytes\n",
+               g_cDuplicates, g_cDuplicatesSaved, g_cbDuplicatesSaved);
+
+        if (fHardlinkDups)
+            rcExit = kDupHardlinkDuplicates();
+    }
+
+    K_NOREF(kDupFileTree_Remove);
+    K_NOREF(kDupSizeTree_Remove);
+    return rcExit;
+}
+
diff --git a/src/kDepPre/Makefile.kmk b/src/kDepPre/Makefile.kmk
new file mode 100644
index 0000000..0c76b64
--- /dev/null
+++ b/src/kDepPre/Makefile.kmk
@@ -0,0 +1,39 @@
+# $Id: Makefile.kmk 2886 2016-09-06 14:31:46Z bird $
+## @file
+# Sub-makefile for kDepPre, the precompiler based dependency generator.
+#
+
+#
+# Copyright (c) 2005-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ../..
+include $(KBUILD_PATH)/subheader.kmk
+
+PROGRAMS += kDepPre
+kDepPre_TEMPLATE        = BIN
+kDepPre_LIBS            = $(LIB_KDEP) $(LIB_KUTIL)
+kDepPre_DEFS.linux      = HAVE_FGETC_UNLOCKED=1
+if1of ($(KBUILD_TARGET), win nt)
+kDepPre_DEFS           += NEED_ISBLANK=1 __WIN32__=1
+endif
+kDepPre_SOURCES         = kDepPre.c
+
+include $(FILE_KBUILD_SUB_FOOTER)
+
diff --git a/src/kDepPre/kDepPre.c b/src/kDepPre/kDepPre.c
new file mode 100644
index 0000000..4167e2c
--- /dev/null
+++ b/src/kDepPre/kDepPre.c
@@ -0,0 +1,495 @@
+/* $Id: kDepPre.c 3315 2020-03-31 01:12:19Z bird $ */
+/** @file
+ * kDepPre - Dependency Generator using Precompiler output.
+ */
+
+/*
+ * Copyright (c) 2005-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#ifdef _MSC_VER
+# include <io.h>
+#else
+# include <unistd.h>
+#endif
+#include "kDep.h"
+
+#ifdef HAVE_FGETC_UNLOCKED
+# define FGETC(s)   getc_unlocked(s)
+#else
+# define FGETC(s)   fgetc(s)
+#endif
+
+#ifdef NEED_ISBLANK
+# define isblank(ch) ( (unsigned char)(ch) == ' ' || (unsigned char)(ch) == '\t' )
+#endif
+
+
+
+
+/**
+ * Parses the output from a preprocessor of a C-style language.
+ *
+ * @returns 0 on success.
+ * @returns 1 or other approriate exit code on failure.
+ * @param   pThis       Pointer to the 'dep' instance.
+ * @param   pInput      Input stream. (probably not seekable)
+ */
+static int ParseCPrecompiler(PDEPGLOBALS pThis, FILE *pInput)
+{
+    enum
+    {
+        C_DISCOVER = 0,
+        C_SKIP_LINE,
+        C_PARSE_FILENAME,
+        C_EOF
+    } enmMode = C_DISCOVER;
+    PDEP    pDep = NULL;
+    int     ch = 0;
+    char    szBuf[8192];
+
+    for (;;)
+    {
+        switch (enmMode)
+        {
+            /*
+             * Start of line, need to look for '#[[:space]]*line <num> "file"' and '# <num> "file"'.
+             */
+            case C_DISCOVER:
+                /* first find '#' */
+                while ((ch = FGETC(pInput)) != EOF)
+                    if (!isblank(ch))
+                        break;
+                if (ch == '#')
+                {
+                    /* skip spaces */
+                    while ((ch = FGETC(pInput)) != EOF)
+                        if (!isblank(ch))
+                            break;
+
+                    /* check for "line" */
+                    if (ch == 'l')
+                    {
+                        if (    (ch = FGETC(pInput)) == 'i'
+                            &&  (ch = FGETC(pInput)) == 'n'
+                            &&  (ch = FGETC(pInput)) == 'e')
+                        {
+                            ch = FGETC(pInput);
+                            if (isblank(ch))
+                            {
+                                /* skip spaces */
+                                while ((ch = FGETC(pInput)) != EOF)
+                                    if (!isblank(ch))
+                                        break;
+                            }
+                            else
+                                ch = 'x';
+                        }
+                        else
+                            ch = 'x';
+                    }
+
+                    /* line number */
+                    if (ch >= '0' && ch <= '9')
+                    {
+                        /* skip the number following spaces */
+                        while ((ch = FGETC(pInput)) != EOF)
+                            if (!isxdigit(ch))
+                                break;
+                        if (isblank(ch))
+                        {
+                            while ((ch = FGETC(pInput)) != EOF)
+                                if (!isblank(ch))
+                                    break;
+                            /* quoted filename */
+                            if (ch == '"')
+                            {
+                                enmMode = C_PARSE_FILENAME;
+                                break;
+                            }
+                        }
+                    }
+                }
+                enmMode = C_SKIP_LINE;
+                break;
+
+            /*
+             * Skip past the end of the current line.
+             */
+            case C_SKIP_LINE:
+                do
+                {
+                    if (    ch == '\r'
+                        ||  ch == '\n')
+                        break;
+                } while ((ch = FGETC(pInput)) != EOF);
+                enmMode = C_DISCOVER;
+                break;
+
+            /*
+             * Parse the filename.
+             */
+            case C_PARSE_FILENAME:
+            {
+                /* retreive and unescape the filename. */
+                char   *psz = &szBuf[0];
+                while (     (ch = FGETC(pInput)) != EOF
+                       &&   psz < &szBuf[sizeof(szBuf) - 1])
+                {
+                    if (ch == '\\')
+                    {
+                        ch = FGETC(pInput);
+                        switch (ch)
+                        {
+                            case '\\': ch = '/'; break;
+                            case 't':  ch = '\t'; break;
+                            case 'r':  ch = '\r'; break;
+                            case 'n':  ch = '\n'; break;
+                            case 'b':  ch = '\b'; break;
+                            default:
+                                fprintf(stderr, "warning: unknown escape char '%c'\n", ch);
+                                continue;
+
+                        }
+                        *psz++ = ch == '\\' ? '/' : ch;
+                    }
+                    else if (ch != '"')
+                        *psz++ = ch;
+                    else
+                    {
+                        size_t cchFilename = psz - &szBuf[0];
+                        *psz = '\0';
+                        /* compare with current dep, add & switch on mismatch. */
+                        if (    !pDep
+                            ||  pDep->cchFilename != cchFilename
+                            ||  memcmp(pDep->szFilename, szBuf, cchFilename))
+                            pDep = depAdd(pThis, szBuf, cchFilename);
+                        break;
+                    }
+                }
+                enmMode = C_SKIP_LINE;
+                break;
+            }
+
+            /*
+             * Handle EOF.
+             */
+            case C_EOF:
+                if (feof(pInput))
+                    return 0;
+                enmMode = C_DISCOVER;
+                break;
+        }
+        if (ch == EOF)
+            enmMode = C_EOF;
+    }
+
+    return 0;
+}
+
+
+static int usage(FILE *pOut,  const char *argv0)
+{
+    fprintf(pOut,
+            "usage: %s [-l=c] -o <output> -t <target> [-f] [-s] < - | <filename> | -e <cmdline> >\n"
+            "   or: %s --help\n"
+            "   or: %s --version\n",
+            argv0, argv0, argv0);
+    return 1;
+}
+
+
+int main(int argc, char *argv[])
+{
+    int         i;
+    DEPGLOBALS  This;
+
+    /* Arguments. */
+    int         iExec = 0;
+    FILE       *pOutput = NULL;
+    const char *pszOutput = NULL;
+    FILE       *pInput = NULL;
+    const char *pszTarget = NULL;
+    int         fStubs = 0;
+    int         fFixCase = 0;
+    /* Argument parsing. */
+    int         fInput = 0;             /* set when we've found input argument. */
+
+    /*
+     * Parse arguments.
+     */
+    if (argc <= 1)
+        return usage(stderr, argv[0]);
+    for (i = 1; i < argc; i++)
+    {
+        if (argv[i][0] == '-')
+        {
+            const char *psz = &argv[i][1];
+            if (*psz == '-')
+            {
+                if (!strcmp(psz, "-help"))
+                    psz = "h";
+                else if (!strcmp(psz, "-version"))
+                    psz = "V";
+            }
+
+            switch (*psz)
+            {
+                /*
+                 * Output file.
+                 */
+                case 'o':
+                {
+                    pszOutput = &argv[i][2];
+                    if (pOutput)
+                    {
+                        fprintf(stderr, "%s: syntax error: only one output file!\n", argv[0]);
+                        return 1;
+                    }
+                    if (!*pszOutput)
+                    {
+                        if (++i >= argc)
+                        {
+                            fprintf(stderr, "%s: syntax error: The '-o' argument is missing the filename.\n", argv[0]);
+                            return 1;
+                        }
+                        pszOutput = argv[i];
+                    }
+                    if (pszOutput[0] == '-' && !pszOutput[1])
+                        pOutput = stdout;
+                    else
+                        pOutput = fopen(pszOutput, "w");
+                    if (!pOutput)
+                    {
+                        fprintf(stderr, "%s: error: Failed to create output file '%s'.\n", argv[0], pszOutput);
+                        return 1;
+                    }
+                    break;
+                }
+
+                /*
+                 * Language spec.
+                 */
+                case 'l':
+                {
+                    const char *pszValue = &argv[i][2];
+                    if (*pszValue == '=')
+                        pszValue++;
+                    if (!strcmp(pszValue, "c"))
+                        ;
+                    else
+                    {
+                        fprintf(stderr, "%s: error: The '%s' language is not supported.\n", argv[0], pszValue);
+                        return 1;
+                    }
+                    break;
+                }
+
+                /*
+                 * Target name.
+                 */
+                case 't':
+                {
+                    if (pszTarget)
+                    {
+                        fprintf(stderr, "%s: syntax error: only one target!\n", argv[0]);
+                        return 1;
+                    }
+                    pszTarget = &argv[i][2];
+                    if (!*pszTarget)
+                    {
+                        if (++i >= argc)
+                        {
+                            fprintf(stderr, "%s: syntax error: The '-t' argument is missing the target name.\n", argv[0]);
+                            return 1;
+                        }
+                        pszTarget = argv[i];
+                    }
+                    break;
+                }
+
+                /*
+                 * Exec.
+                 */
+                case 'e':
+                {
+                    if (++i >= argc)
+                    {
+                        fprintf(stderr, "%s: syntax error: The '-e' argument is missing the command.\n", argv[0]);
+                        return 1;
+                    }
+                    iExec = i;
+                    i = argc - 1;
+                    break;
+                }
+
+                /*
+                 * Pipe input.
+                 */
+                case '\0':
+                {
+                    pInput = stdin;
+                    fInput = 1;
+                    break;
+                }
+
+                /*
+                 * Fix case.
+                 */
+                case 'f':
+                {
+                    fFixCase = 1;
+                    break;
+                }
+
+                /*
+                 * Generate stubs.
+                 */
+                case 's':
+                {
+                    fStubs = 1;
+                    break;
+                }
+
+                /*
+                 * The obligatory help and version.
+                 */
+                case 'h':
+                    usage(stdout, argv[0]);
+                    return 0;
+
+                case 'V':
+                    printf("kDepPre - kBuild version %d.%d.%d\n"
+                           "Copyright (C) 2005-2008 knut st. osmundsen\n",
+                           KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH);
+                    return 0;
+
+                /*
+                 * Invalid argument.
+                 */
+                default:
+                    fprintf(stderr, "%s: syntax error: Invalid argument '%s'.\n", argv[0], argv[i]);
+                    return usage(stderr, argv[0]);
+            }
+        }
+        else
+        {
+            pInput = fopen(argv[i], "r");
+            if (!pInput)
+            {
+                fprintf(stderr, "%s: error: Failed to open input file '%s'.\n", argv[0], argv[i]);
+                return 1;
+            }
+            fInput = 1;
+        }
+
+        /*
+         * End of the line?
+         */
+        if (fInput)
+        {
+            if (++i < argc)
+            {
+                fprintf(stderr, "%s: syntax error: No arguments shall follow the input spec.\n", argv[0]);
+                return 1;
+            }
+            break;
+        }
+    }
+
+    /*
+     * Got all we require?
+     */
+    if (!pInput && iExec <= 0)
+    {
+        fprintf(stderr, "%s: syntax error: No input!\n", argv[0]);
+        return 1;
+    }
+    if (!pOutput)
+    {
+        fprintf(stderr, "%s: syntax error: No output!\n", argv[0]);
+        return 1;
+    }
+    if (!pszTarget)
+    {
+        fprintf(stderr, "%s: syntax error: No target!\n", argv[0]);
+        return 1;
+    }
+
+    /*
+     * Spawn process?
+     */
+    if (iExec > 0)
+    {
+        fprintf(stderr, "%s: -e is not yet implemented!\n", argv[0]);
+        return 1;
+    }
+
+    /*
+     * Do the parsing.
+     */
+    depInit(&This);
+    i = ParseCPrecompiler(&This, pInput);
+
+    /*
+     * Reap child.
+     */
+    if (iExec > 0)
+    {
+        /* later */
+    }
+
+    /*
+     * Write the dependecy file.
+     */
+    if (!i)
+    {
+        depOptimize(&This, fFixCase, 0 /* fQuiet */, NULL /*pszIgnoredExt*/);
+        depPrintTargetWithDeps(&This, pOutput, pszTarget, 1 /*fEscapeTarget*/);
+        if (fStubs)
+            depPrintStubs(&This, pOutput);
+    }
+
+    /*
+     * Close the output, delete output on failure.
+     */
+    if (!i && ferror(pOutput))
+    {
+        i = 1;
+        fprintf(stderr, "%s: error: Error writing to '%s'.\n", argv[0], pszOutput);
+    }
+    fclose(pOutput);
+    if (i)
+    {
+        if (unlink(pszOutput))
+            fprintf(stderr, "%s: warning: failed to remove output file '%s' on failure.\n", argv[0], pszOutput);
+    }
+
+    depCleanup(&This);
+
+    return i;
+}
+
diff --git a/src/kLibTweaker/Makefile.kmk b/src/kLibTweaker/Makefile.kmk
new file mode 100644
index 0000000..016e118
--- /dev/null
+++ b/src/kLibTweaker/Makefile.kmk
@@ -0,0 +1,39 @@
+# $Id: Makefile.kmk 2791 2015-09-15 22:57:44Z bird $
+## @file
+# Sub-makefile for kLibTweaker.
+#
+
+#
+# Copyright (c) 2007-2015 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ../..
+include $(PATH_KBUILD)/subheader.kmk
+
+PROGRAMS += kLibTweaker
+kLibTweaker_TEMPLATE = BIN
+kLibTweaker_DEFS.release = NASSERT
+kLibTweaker_SOURCES = kLibTweaker.c
+kLibTweaker_INCS = ../lib
+kLibTweaker_LIBS = \
+	$(LIB_KDEP) \
+	$(LIB_KUTIL)
+
+include $(KBUILD_PATH)/subfooter.kmk
+
diff --git a/src/kLibTweaker/kLibTweaker.c b/src/kLibTweaker/kLibTweaker.c
new file mode 100644
index 0000000..ecfce56
--- /dev/null
+++ b/src/kLibTweaker/kLibTweaker.c
@@ -0,0 +1,775 @@
+/* $Id: kLibTweaker.c 2791 2015-09-15 22:57:44Z bird $ */
+/** @file
+ * kLibTweaker - Import library tweaker for windows.
+ */
+
+/*
+ * Copyright (c) 2007-2015 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#if 0
+# define ELECTRIC_HEAP
+# include "../kmk/electric.h"
+# include "../kmk/electric.c"
+#endif
+#include <ctype.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "k/kLdrFmts/pe.h"
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+/**
+ * Microsoft import library archive header.
+ *
+ * This has the same size as a COFF header, which is probably not a coincidence.
+ */
+typedef struct COFFIMPLIBHDR
+{
+    KU16            uSig1;    /* 0 */
+    KU16            uSig2;    /* 0xffff */
+    KU16            uVersion; /* 0 */
+    KU16            uMachine; /* IMAGE_FILE_MACHINE_I386, ... */
+    KU32            uTimeDateStamp;
+    KU32            cbData;
+    KU16            uOrdinalOrHint;
+    KU16            uFlags;
+} COFFIMPLIBHDR;
+
+/**
+ * COFF symbol.
+ *
+ * This one has an odd size and will cause misaligned accesses on platforms
+ * which cares about such.
+ */
+#pragma pack(1)
+typedef struct COFFSYMBOL
+{
+    union
+    {
+        char        e_name[8];
+        struct
+        {
+            KU32    e_zeros;    /**< Zero to distinguish it from ascii name. */
+            KU32    e_offset;   /**< String table offset. */
+        } e;
+    } e;
+    KU32            e_value;
+    KI16            e_scnum;
+    KU16            e_type;
+    KU8             e_sclass;
+    KU8             e_numaux;
+} COFFSYMBOL;
+#pragma pack()
+
+/**
+ * Archive file header.
+ */
+typedef struct ARCHFILEHDR
+{
+    char        achName[16];
+    char        achModtime[12];
+    char        achOwnerId[6];
+    char        achGroupId[6];
+    char        achMode[8];
+    char        achSize[10];
+    char        achMagic[2];
+} ARCHFILEHDR;
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** Whether verbose output is enabled. */
+static unsigned g_cVerbosityLevel = 0;
+/** What to prefix the errors with. */
+static char g_szErrorPrefix[128];
+
+
+void FatalMsg(const char *pszFormat, ...)
+{
+    va_list va;
+
+    if (g_szErrorPrefix[0])
+        fprintf(stderr, "%s - fatal error: ", g_szErrorPrefix);
+    else
+        fprintf(stderr, "fatal error: ");
+
+    va_start(va, pszFormat);
+    vfprintf(stderr, pszFormat, va);
+    va_end(va);
+}
+
+
+void FatalDie(const char *pszFormat, ...)
+{
+    va_list va;
+
+    if (g_szErrorPrefix[0])
+        fprintf(stderr, "%s - fatal error: ", g_szErrorPrefix);
+    else
+        fprintf(stderr, "fatal error: ");
+
+    va_start(va, pszFormat);
+    vfprintf(stderr, pszFormat, va);
+    va_end(va);
+
+    exit(1);
+}
+
+
+static int ErrorMsg(const char *pszFormat, ...)
+{
+    va_list va;
+
+    if (g_szErrorPrefix[0])
+        fprintf(stderr, "%s - error: ", g_szErrorPrefix);
+    else
+        fprintf(stderr, "error: ");
+
+    va_start(va, pszFormat);
+    vfprintf(stderr, pszFormat, va);
+    va_end(va);
+
+    return 1;
+}
+
+
+static void InfoMsg(unsigned uLevel, const char *pszFormat, ...)
+{
+    if (uLevel <= g_cVerbosityLevel)
+    {
+        va_list va;
+
+        if (g_szErrorPrefix[0])
+            fprintf(stderr, "%s - info: ", g_szErrorPrefix);
+        else
+            fprintf(stderr, "info: ");
+
+        va_start(va, pszFormat);
+        vfprintf(stderr, pszFormat, va);
+        va_end(va);
+    }
+}
+
+
+static void SetErrorPrefix(const char *pszPrefix, ...)
+{
+    int cch;
+    va_list va;
+
+    va_start(va, pszPrefix);
+#if defined(_MSC_VER) || defined(__sun__)
+    cch = vsprintf(g_szErrorPrefix, pszPrefix, va);
+    if (cch >= sizeof(g_szErrorPrefix))
+        FatalDie("Buffer overflow setting error prefix!\n");
+#else
+    vsnprintf(g_szErrorPrefix, sizeof(g_szErrorPrefix), pszPrefix, va);
+#endif
+    va_end(va);
+    (void)cch;
+}
+
+#ifndef ELECTRIC_HEAP
+void *xmalloc(size_t cb)
+{
+    void *pv = malloc(cb);
+    if (!pv)
+        FatalDie("out of memory (%d)\n", (int)cb);
+    return pv;
+}
+
+
+void *xrealloc(void *pvOld, size_t cb)
+{
+    void *pv = realloc(pvOld, cb);
+    if (!pv)
+        FatalDie("out of memory (%d)\n", (int)cb);
+    return pv;
+}
+
+
+char *xstrdup(const char *pszIn)
+{
+    char *psz;
+    if (pszIn)
+    {
+        psz = strdup(pszIn);
+        if (!psz)
+            FatalDie("out of memory (%d)\n", (int)strlen(pszIn));
+    }
+    else
+        psz = NULL;
+    return psz;
+}
+#endif
+
+
+void *xmallocz(size_t cb)
+{
+    void *pv = xmalloc(cb);
+    memset(pv, 0, cb);
+    return pv;
+}
+
+
+/**
+ * Adds the arguments found in the pszCmdLine string to argument vector.
+ *
+ * The parsing of the pszCmdLine string isn't very sophisticated, no
+ * escaping or quotes.
+ *
+ * @param   pcArgs      Pointer to the argument counter.
+ * @param   ppapszArgs  Pointer to the argument vector pointer.
+ * @param   pszCmdLine  The command line to parse and append.
+ * @param   pszWedgeArg Argument to put infront of anything found in pszCmdLine.
+ */
+static void AppendArgs(int *pcArgs, char ***ppapszArgs, const char *pszCmdLine, const char *pszWedgeArg)
+{
+    int i;
+    int cExtraArgs;
+    const char *psz;
+    char **papszArgs;
+
+    /*
+     * Count the new arguments.
+     */
+    cExtraArgs = 0;
+    psz = pszCmdLine;
+    while (*psz)
+    {
+        while (isspace(*psz))
+            psz++;
+        if (!psz)
+            break;
+        cExtraArgs++;
+        while (!isspace(*psz) && *psz)
+            psz++;
+    }
+    if (!cExtraArgs)
+        return;
+
+    /*
+     * Allocate a new vector that can hold the arguments.
+     * (Reallocating might not work since the argv might not be allocated
+     *  from the heap but off the stack or somewhere... )
+     */
+    i = *pcArgs;
+    *pcArgs = i + cExtraArgs + !!pszWedgeArg;
+    papszArgs = xmalloc((*pcArgs + 1) * sizeof(char *));
+    *ppapszArgs = memcpy(papszArgs, *ppapszArgs, i * sizeof(char *));
+
+    if (pszWedgeArg)
+        papszArgs[i++] = xstrdup(pszWedgeArg);
+
+    psz = pszCmdLine;
+    while (*psz)
+    {
+        size_t cch;
+        const char *pszEnd;
+        while (isspace(*psz))
+            psz++;
+        if (!psz)
+            break;
+        pszEnd = psz;
+        while (!isspace(*pszEnd) && *pszEnd)
+            pszEnd++;
+
+        cch = pszEnd - psz;
+        papszArgs[i] = xmalloc(cch + 1);
+        memcpy(papszArgs[i], psz, cch);
+        papszArgs[i][cch] = '\0';
+
+        i++;
+        psz = pszEnd;
+    }
+
+    papszArgs[i] = NULL;
+}
+
+
+
+
+static fpos_t kLibTweakerAsciiToSize(const char *pch, size_t cch)
+{
+    fpos_t cb = 0;
+
+    /* strip leading spaces. */
+    while (cch > 0 && (*pch == ' ' || *pch == '\t'))
+        cch--, pch++;
+
+    /* Convert decimal to binary. */
+    while (cch-- > 0)
+    {
+        char ch = *pch++;
+        if (ch >= '0' && ch <= '9')
+        {
+            cb *= 10;
+            cb += ch - '0';
+        }
+        else
+            break;
+    }
+
+    return cb;
+}
+
+
+static int kLibMyReadAt(FILE *pFile, void *pv, size_t cb, fpos_t off, int fEofOk)
+{
+    if (fsetpos(pFile, &off) == 0)
+    {
+        size_t cbActual = fread(pv, 1, cb, pFile);
+        if (cbActual == cb)
+            return 0;
+        if (!fEofOk || !feof(pFile))
+            ErrorMsg("fread returned %#lx, expected %#lx!\n", (unsigned long)cbActual, (unsigned long)cb);
+    }
+    else
+        ErrorMsg("seek error!\n");
+    return 1;
+}
+
+
+static int kLibMyWriteAt(FILE *pFile, const void *pv, size_t cb, fpos_t off)
+{
+    if (fsetpos(pFile, &off) == 0)
+    {
+        size_t cbActual = fwrite(pv, 1, cb, pFile);
+        if (cbActual == cb)
+            return 0;
+        ErrorMsg("fwrite returned %#lx, expected %#lx!\n", (unsigned long)cbActual, (unsigned long)cb);
+    }
+    else
+        ErrorMsg("seek error!\n");
+    return 1;
+}
+
+
+static int kLibFillNullThunkData(FILE *pFile, fpos_t cbFile, fpos_t offFileBytes)
+{
+    size_t                  off;
+    IMAGE_FILE_HEADER       CoffHdr;
+    IMAGE_SECTION_HEADER    SecHdr;
+    unsigned                iSecHdr;
+    fpos_t                  offCur;
+    unsigned                cbMachineWord;
+    KU32                    cbStrTab;
+    COFFSYMBOL             *paSymbols;
+    int                     rcRet = 0;
+
+    /*
+     * Read the COFF file header and filter out unlikly files based on
+     * section and symbol counts.
+     */
+    if (cbFile <= sizeof(IMAGE_FILE_HEADER) + sizeof(IMAGE_SECTION_HEADER) * 2 + 4)
+        return 0;
+    if (kLibMyReadAt(pFile, &CoffHdr, sizeof(CoffHdr), offFileBytes, 0) != 0)
+        return 1;
+    if (   CoffHdr.Machine != IMAGE_FILE_MACHINE_I386
+        && CoffHdr.Machine != IMAGE_FILE_MACHINE_AMD64)
+        return 0;
+    cbMachineWord = CoffHdr.Machine == IMAGE_FILE_MACHINE_I386 ? 4 : 8;
+    if (   CoffHdr.NumberOfSections == 0
+        || CoffHdr.NumberOfSymbols == 0)
+        return 0;
+    off = sizeof(IMAGE_FILE_HEADER) + CoffHdr.NumberOfSections * sizeof(IMAGE_SECTION_HEADER);
+    if ((fpos_t)off >= cbFile)
+        return 0;
+    if (   CoffHdr.PointerToSymbolTable >= (KU64)cbFile
+        || CoffHdr.PointerToSymbolTable < off)
+        return 0;
+
+    /*
+     * Search for the .idata$5 section which the thunk data is usually found in.
+     */
+    offCur = offFileBytes + sizeof(CoffHdr);
+    for (iSecHdr = 0; iSecHdr < CoffHdr.NumberOfSections; iSecHdr++)
+    {
+        if (kLibMyReadAt(pFile, &SecHdr, sizeof(SecHdr), offCur, 0) != 0)
+            return 1;
+        InfoMsg(2, "#2: %.8s VirtualSize=%#lx\n", SecHdr.Name, SecHdr.SizeOfRawData);
+        if (   !memcmp(SecHdr.Name, ".idata$5", 8)
+            && SecHdr.SizeOfRawData == cbMachineWord)
+            break;
+        offCur += sizeof(SecHdr);
+    }
+    if (iSecHdr == CoffHdr.NumberOfSections)
+        return 0;
+
+    /*
+     * Read in the symbo and string tables.
+     */
+    off = CoffHdr.PointerToSymbolTable + CoffHdr.NumberOfSymbols * sizeof(COFFSYMBOL);
+    if (kLibMyReadAt(pFile, &cbStrTab, sizeof(cbStrTab), offFileBytes + off, 0) != 0)
+        return 1;
+    InfoMsg(2, "#2: Found COFF file header, cbStrTab=%#x; off=%#lx NumberOfSymbols=%#x PointerToSymbolTable=%#x\n",
+            cbStrTab, (long)off, CoffHdr.NumberOfSymbols, CoffHdr.PointerToSymbolTable);
+    if (   cbStrTab <= 4U
+        || cbStrTab >= 16*1024*1024U /* 16MB */
+        || (fpos_t)off + cbStrTab > cbFile)
+        return 0;
+    paSymbols = xmalloc(CoffHdr.NumberOfSymbols * sizeof(COFFSYMBOL) + cbStrTab + 1);
+    if (kLibMyReadAt(pFile, paSymbols, CoffHdr.NumberOfSymbols * sizeof(COFFSYMBOL) + cbStrTab,
+                     offFileBytes + CoffHdr.PointerToSymbolTable, 0) == 0)
+    {
+        char       *pchStrTab = (char *)&paSymbols[CoffHdr.NumberOfSymbols];
+        unsigned    iSym;
+
+        pchStrTab[cbStrTab] = '\0';
+        pchStrTab[0] = '\0';
+        pchStrTab[1] = '\0';
+        pchStrTab[2] = '\0';
+        pchStrTab[3] = '\0';
+
+        for (iSym = 0; iSym < CoffHdr.NumberOfSymbols; iSym++)
+        {
+            static char const s_szSuffix[] = "NULL_THUNK_DATA";
+            const char *pchName;
+            size_t      cchName;
+            if (paSymbols[iSym].e.e.e_zeros != 0)
+            {
+                pchName = &paSymbols[iSym].e.e_name[0];
+                cchName = (char *)memchr(pchName, '\0', sizeof(paSymbols[iSym].e.e_name)) - pchName;
+                if (cchName > sizeof(paSymbols[iSym].e.e_name))
+                    cchName = sizeof(paSymbols[iSym].e.e_name);
+            }
+            else if (   paSymbols[iSym].e.e.e_offset == 0
+                     || paSymbols[iSym].e.e.e_offset >= cbStrTab)
+                continue;
+            else
+            {
+                pchName = &pchStrTab[paSymbols[iSym].e.e.e_offset];
+                cchName = strlen(pchName);
+            }
+
+            if (   *pchName == 0x7f
+                && cchName >= sizeof(s_szSuffix)
+                && memcmp(&pchName[cchName - sizeof(s_szSuffix) + 1], s_szSuffix, sizeof(s_szSuffix) - 1) == 0)
+            {
+                if (pchName[cchName] == '\0')
+                    InfoMsg(1, "#2: Found '%s': value=%#lx\n", pchName, paSymbols[iSym].e_value);
+                else
+                    InfoMsg(1, "#2: Found '%.8s': value=%#lx\n", pchName, paSymbols[iSym].e_value);
+                if (   paSymbols[iSym].e_scnum > 0
+                    && paSymbols[iSym].e_scnum <= CoffHdr.NumberOfSections)
+                {
+                    if (paSymbols[iSym].e_scnum != iSecHdr + 1)
+                        InfoMsg(0, "#2: '%s' in section %u, expected %u\n", pchName, paSymbols[iSym].e_scnum, iSecHdr);
+                    else if (paSymbols[iSym].e_value != 0)
+                        InfoMsg(0, "#2: '%s' in value %#xu, expected 0x0\n", pchName, paSymbols[iSym].e_value);
+                    else if (   SecHdr.PointerToRawData < sizeof(CoffHdr) + CoffHdr.NumberOfSections * sizeof(IMAGE_SECTION_HEADER)
+                             || (fpos_t)SecHdr.PointerToRawData + cbMachineWord > cbFile)
+                        InfoMsg(0, "#2: Unexpected PointerToRawData value: %#x\n", SecHdr.PointerToRawData);
+                    else
+                    {
+                        union
+                        {
+                            KU8  ab[8];
+                            KU32 u32;
+                            KU64 u64;
+                        } uBuf;
+                        uBuf.u64 = 0;
+                        off = offFileBytes + SecHdr.PointerToRawData;
+                        if (kLibMyReadAt(pFile, &uBuf, cbMachineWord, off, 0) == 0)
+                        {
+                            static const KU8 s_abGarbage[8] = { 0xaa, 0x99, 0x88, 0xbb,  0xbb, 0xaa, 0x88, 0x99 };
+                            static const KU8 s_abZero[8]    = { 0, 0, 0, 0,  0, 0, 0, 0 };
+                            if (memcmp(&uBuf, s_abZero,cbMachineWord) == 0)
+                            {
+                                rcRet = kLibMyWriteAt(pFile, s_abGarbage, cbMachineWord, off);
+                                if (!rcRet)
+                                    InfoMsg(1, "#2: Updated '%s'\n", pchName);
+                            }
+                            else if (memcmp(&uBuf, s_abGarbage, cbMachineWord) == 0)
+                            {
+                                InfoMsg(1, "#2: Already modified '%s'\n", pchName);
+                                rcRet = 0;
+                            }
+                            else
+                                rcRet = ErrorMsg(0, "#2: Unexpected '%s' data: %02x %02x %02x %02x %02x %02x %02x %02x\n",
+                                                 pchName,
+                                                 uBuf.ab[0], uBuf.ab[1], uBuf.ab[2], uBuf.ab[3],
+                                                 uBuf.ab[4], uBuf.ab[5], uBuf.ab[6], uBuf.ab[7]);
+                        }
+                        break;
+                    }
+                }
+            }
+        }
+
+    }
+    else
+        rcRet = 1;
+    free(paSymbols);
+    return rcRet;
+}
+
+
+/**
+ * Clears timestamps to avoid rebuilding stuff just because the internal
+ * timestamps changed in an import library.
+ */
+static int kLibClearTimestamps(FILE *pFile, fpos_t offFileHdr, ARCHFILEHDR *pFileHdr, fpos_t cbFile, fpos_t offFileBytes)
+{
+    union
+    {
+        IMAGE_FILE_HEADER   CoffHdr;
+        COFFIMPLIBHDR       ImpLibHdr;
+    } u;
+    if (sizeof(u.CoffHdr) != sizeof(u.ImpLibHdr))
+        FatalDie("Oops!");
+
+    /*
+     * Clear the timestamp in the library file header.
+     */
+    memset(pFileHdr->achModtime, '0', sizeof(pFileHdr->achModtime));
+    if (kLibMyWriteAt(pFile, pFileHdr, sizeof(*pFileHdr), offFileHdr) != 0)
+        return 1;
+
+    /*
+     * Clear the timestamp in the COFF header, if we find one.
+     */
+    if (cbFile <= sizeof(IMAGE_FILE_HEADER))
+        return 0;
+    if (kLibMyReadAt(pFile, &u.CoffHdr, sizeof(u.CoffHdr), offFileBytes, 0) != 0)
+        return 1;
+
+    if (   (   u.CoffHdr.Machine == IMAGE_FILE_MACHINE_I386
+            || u.CoffHdr.Machine == IMAGE_FILE_MACHINE_AMD64)
+        &&     sizeof(IMAGE_FILE_HEADER)
+             + u.CoffHdr.NumberOfSections * sizeof(IMAGE_SECTION_HEADER)
+           <= (KU64)cbFile
+        && u.CoffHdr.PointerToSymbolTable <= (KU64)cbFile)
+    {
+        InfoMsg(1, "Found COFF file header\n");
+        if (u.CoffHdr.TimeDateStamp != 0)
+        {
+            u.CoffHdr.TimeDateStamp = 0;
+            return kLibMyWriteAt(pFile, &u.CoffHdr, sizeof(u.CoffHdr), offFileBytes);
+        }
+    }
+    else if (   u.ImpLibHdr.uSig1    == 0
+             && u.ImpLibHdr.uSig2    == 0xffff
+             && u.ImpLibHdr.uVersion == 0
+             && (   u.ImpLibHdr.uMachine == IMAGE_FILE_MACHINE_I386
+                 || u.ImpLibHdr.uMachine == IMAGE_FILE_MACHINE_AMD64)
+             && u.ImpLibHdr.cbData <= cbFile)
+    {
+        InfoMsg(1, "Found COFF import library header\n");
+        if (u.ImpLibHdr.uTimeDateStamp)
+        {
+            u.ImpLibHdr.uTimeDateStamp = 0;
+            return kLibMyWriteAt(pFile, &u.ImpLibHdr, sizeof(u.ImpLibHdr), offFileBytes);
+        }
+    }
+    else
+        InfoMsg(1, "CoffHdr.Machine=%#x ImpLibHdr.Machine=%#x\n", u.CoffHdr.Machine, u.ImpLibHdr.uMachine);
+
+    return 0;
+}
+
+
+static int kLibTweakerDoIt(const char *pszLib, int fClearTimestamps, int fFillNullThunkData)
+{
+    int   rcRet = 0;
+    FILE *pFile = fopen(pszLib, "r+b");
+    if (pFile)
+    {
+        /*
+         * Read the header.
+         */
+        static char s_szMagic[] = "!<arch>\n";
+        union
+        {
+            char                ab[1024];
+            IMAGE_FILE_HEADER   CoffHdr;
+        } uBuf;
+        if (   fread(uBuf.ab, 1, sizeof(s_szMagic) - 1, pFile) == sizeof(s_szMagic) - 1
+            && memcmp(uBuf.ab, s_szMagic, sizeof(s_szMagic) - 1) == 0)
+        {
+            fpos_t offFileHdr = sizeof(s_szMagic) - 1;
+            while (!feof(pFile))
+            {
+                ARCHFILEHDR     FileHdr;
+                if (kLibMyReadAt(pFile, &FileHdr, sizeof(FileHdr), offFileHdr, 1) != 0)
+                {
+                    if (feof(pFile))
+                        break;
+                    rcRet = ErrorMsg("failed reading the file header (offset %ld)\n", (long)offFileHdr);
+                    break;
+                }
+                if (   FileHdr.achMagic[0] == 0x60
+                    && FileHdr.achMagic[1] == 0x0a)
+                {
+                    fpos_t const offFileBytes = offFileHdr + sizeof(FileHdr);
+
+                    /*
+                     * Convert the size from decimal to binary as we need it to skip to
+                     * the next file header.
+                     */
+                    fpos_t const cb = kLibTweakerAsciiToSize(FileHdr.achSize, sizeof(FileHdr.achSize));
+                    InfoMsg(1, "Found header at %#lx: cbFile=%#lx, bytes at %#lx\n",
+                            (unsigned long)offFileHdr, (unsigned long)cb, (unsigned long)offFileBytes);
+
+                    /*
+                     * Make the requested changes.
+                     */
+                    if (fClearTimestamps)
+                        rcRet |= kLibClearTimestamps(pFile, offFileHdr, &FileHdr, cb, offFileBytes);
+
+                    if (fFillNullThunkData)
+                        rcRet |= kLibFillNullThunkData(pFile, cb, offFileBytes);
+
+                    /*
+                     * Skip to the next header.
+                     */
+                    offFileHdr = offFileBytes + ((cb + 1) & ~(fpos_t)1);
+                }
+                else
+                    rcRet = ErrorMsg("invalid file header magic (offset %ld)\n", (long)offFileHdr);
+            }
+        }
+        else
+            rcRet = ErrorMsg("Didn't find '!<arch>\\n' magic in '%s' (or read error)\n", pszLib);
+
+        if (fclose(pFile) != 0)
+            rcRet = ErrorMsg("Error closing '%s'\n");
+    }
+    else
+        rcRet = ErrorMsg("Failed to open '%s' for read+write\n", pszLib);
+    return rcRet;
+}
+
+
+/**
+ * Prints a syntax error and returns the appropriate exit code
+ *
+ * @returns approriate exit code.
+ * @param   pszFormat   The syntax error message.
+ * @param   ...         Message args.
+ */
+static int SyntaxError(const char *pszFormat, ...)
+{
+    va_list va;
+    fprintf(stderr, "kObjCache: syntax error: ");
+    va_start(va, pszFormat);
+    vfprintf(stderr, pszFormat, va);
+    va_end(va);
+    return 1;
+}
+
+
+/**
+ * Prints the usage.
+ * @returns 0.
+ */
+static int usage(FILE *pOut)
+{
+    fprintf(pOut,
+            "syntax: kLibTweaker [-v|--verbose] [--clear-timestamps] <lib>\n"
+            "\n");
+    return 0;
+}
+
+
+int main(int argc, char **argv)
+{
+    char *psz;
+    int i;
+
+    int fClearTimestamps = 0;
+    int fFillNullThunkData = 0;
+    const char *pszLib = NULL;
+
+    SetErrorPrefix("kLibTweaker");
+
+    /*
+     * Arguments passed in the environmnet?
+     */
+    psz = getenv("KLIBTWEAKER_OPTS");
+    if (psz)
+        AppendArgs(&argc, &argv, psz, NULL);
+
+/** @todo Add the capability to produce import/stub libraries from ELF shared
+ * objects that we can use while linking and break up linking dependencies
+ * (i.e. not relink everything just because something in VBoxRT change that
+ * didn't make any difference to the symbols it exports). */
+
+    /*
+     * Parse the arguments.
+     */
+    if (argc <= 1)
+        return usage(stderr) + 1;
+    for (i = 1; i < argc; i++)
+    {
+        if (!strcmp(argv[i], "--clear-timestamps"))
+            fClearTimestamps = 1;
+        else if (!strcmp(argv[i], "--fill-null_thunk_data"))
+            fFillNullThunkData = 1;
+        /* Standard stuff: */
+        else if (!strcmp(argv[i], "--help"))
+            return usage(stderr);
+        else if (!strcmp(argv[i], "-v") || !strcmp(argv[i], "--verbose"))
+            g_cVerbosityLevel++;
+        else if (!strcmp(argv[i], "-q") || !strcmp(argv[i], "--quiet"))
+            g_cVerbosityLevel = 0;
+        else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "-?")
+              || !strcmp(argv[i], "/h") || !strcmp(argv[i], "/?") || !strcmp(argv[i], "/help"))
+            return usage(stdout);
+        else if (!strcmp(argv[i], "-V") || !strcmp(argv[i], "--version"))
+        {
+            printf("kLibTweaker - kBuild version %d.%d.%d ($Revision: 2791 $)\n"
+                   "Copyright (c) 2007-2015 knut st. osmundsen\n",
+                   KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH);
+            return 0;
+        }
+        else if (!strcmp(argv[i], "--"))
+        {
+            i++;
+            if (i == argc)
+                return SyntaxError("No library given!\n");
+            if (i + 1 != argc || pszLib)
+                return SyntaxError("Only one library can be tweaked at a time!\n");
+            pszLib = argv[i];
+            break;
+        }
+        else if (argv[i][0] == '-')
+            return SyntaxError("Doesn't grok '%s'!\n", argv[i]);
+        else if (!pszLib)
+            pszLib = argv[i];
+        else
+            return SyntaxError("Only one library can be tweaked at a time!\n");
+    }
+    if (!pszLib)
+        return SyntaxError("No library given!\n");
+
+    return kLibTweakerDoIt(pszLib, fClearTimestamps, fFillNullThunkData);
+}
+
diff --git a/src/kObjCache/Makefile.kmk b/src/kObjCache/Makefile.kmk
new file mode 100644
index 0000000..d2fcae3
--- /dev/null
+++ b/src/kObjCache/Makefile.kmk
@@ -0,0 +1,38 @@
+# $Id: Makefile.kmk 2618 2012-08-02 03:34:40Z bird $
+## @file
+# Sub-makefile for kObjCache.
+#
+
+#
+# Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ../..
+include $(PATH_KBUILD)/subheader.kmk
+
+PROGRAMS += kObjCache
+kObjCache_TEMPLATE = BIN
+kObjCache_DEFS.release = NASSERT
+kObjCache_SOURCES = kObjCache.c
+kObjCache_LIBS = \
+	$(LIB_KDEP) \
+	$(LIB_KUTIL)
+
+include $(KBUILD_PATH)/subfooter.kmk
+
diff --git a/src/kObjCache/kObjCache.c b/src/kObjCache/kObjCache.c
new file mode 100644
index 0000000..856be15
--- /dev/null
+++ b/src/kObjCache/kObjCache.c
@@ -0,0 +1,5304 @@
+/* $Id: kObjCache.c 3315 2020-03-31 01:12:19Z bird $ */
+/** @file
+ * kObjCache - Object Cache.
+ */
+
+/*
+ * Copyright (c) 2007-2012 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#if 0
+# define ELECTRIC_HEAP
+# include "../kmk/electric.h"
+# include "../kmk/electric.c"
+#endif
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <errno.h>
+#include <assert.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <ctype.h>
+#ifndef PATH_MAX
+# ifdef _MAX_PATH
+#  define PATH_MAX _MAX_PATH /* windows */
+# else
+#  define PATH_MAX 4096 /* gnu hurd */
+# endif
+#endif
+#if defined(__OS2__) || defined(__WIN__)
+# include <process.h>
+# include <io.h>
+# ifdef __OS2__
+#  include <unistd.h>
+#  include <sys/wait.h>
+#  include <sys/time.h>
+# endif
+# if defined(_MSC_VER)
+#  include <direct.h>
+   typedef intptr_t pid_t;
+# endif
+# ifndef _P_WAIT
+#  define _P_WAIT   P_WAIT
+# endif
+# ifndef _P_NOWAIT
+#  define _P_NOWAIT P_NOWAIT
+# endif
+#else
+# include <unistd.h>
+# include <sys/wait.h>
+# include <sys/time.h>
+# ifndef O_BINARY
+#  define O_BINARY 0
+# endif
+# ifndef __sun__
+#  include <sys/file.h> /* flock */
+# endif
+#endif
+#if defined(__WIN__)
+# include <Windows.h>
+# include "quoted_spawn.h"
+#endif
+#if defined(__HAIKU__)
+# include <posix/sys/file.h>
+#endif
+
+#include "crc32.h"
+#include "md5.h"
+#include "kDep.h"
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** The max line length in a cache file. */
+#define KOBJCACHE_MAX_LINE_LEN  16384
+#if defined(__WIN__)
+# define PATH_SLASH '\\'
+#else
+# define PATH_SLASH '/'
+#endif
+#if defined(__OS2__) || defined(__WIN__)
+# define IS_SLASH(ch)       ((ch) == '/' || (ch) == '\\')
+# define IS_SLASH_DRV(ch)   ((ch) == '/' || (ch) == '\\' || (ch) == ':')
+#else
+# define IS_SLASH(ch)       ((ch) == '/')
+# define IS_SLASH_DRV(ch)   ((ch) == '/')
+#endif
+
+#ifndef STDIN_FILENO
+# define STDIN_FILENO 0
+#endif
+#ifndef STDOUT_FILENO
+# define STDOUT_FILENO 1
+#endif
+#ifndef STDERR_FILENO
+# define STDERR_FILENO 2
+#endif
+
+#define MY_IS_BLANK(a_ch)   ((a_ch) == ' ' || (a_ch) == '\t')
+
+#define KOC_BUF_MIN         KOC_BUF_ALIGNMENT
+#define KOC_BUF_INCR        KOC_BUF_ALIGNMENT
+#define KOC_BUF_ALIGNMENT   (4U*1024U*1024U)
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** Whether verbose output is enabled. */
+static unsigned g_cVerbosityLevel = 0;
+/** What to prefix the errors with. */
+static char g_szErrorPrefix[128];
+
+/** Read buffer shared by the cache components. */
+static char g_szLine[KOBJCACHE_MAX_LINE_LEN + 16];
+
+/** How many times we've moved memory around. */
+static size_t g_cMemMoves = 0;
+/** How much memory we've moved. */
+static size_t g_cbMemMoved = 0;
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static char *MakePathFromDirAndFile(const char *pszName, const char *pszDir);
+static char *CalcRelativeName(const char *pszPath, const char *pszDir);
+static FILE *FOpenFileInDir(const char *pszName, const char *pszDir, const char *pszMode);
+static int   UnlinkFileInDir(const char *pszName, const char *pszDir);
+static int   RenameFileInDir(const char *pszOldName, const char *pszNewName, const char *pszDir);
+static int   DoesFileInDirExist(const char *pszName, const char *pszDir);
+static void *ReadFileInDir(const char *pszName, const char *pszDir, size_t *pcbFile);
+
+
+void FatalMsg(const char *pszFormat, ...)
+{
+    va_list va;
+
+    if (g_szErrorPrefix[0])
+        fprintf(stderr, "%s - fatal error: ", g_szErrorPrefix);
+    else
+        fprintf(stderr, "fatal error: ");
+
+    va_start(va, pszFormat);
+    vfprintf(stderr, pszFormat, va);
+    va_end(va);
+}
+
+
+void FatalDie(const char *pszFormat, ...)
+{
+    va_list va;
+
+    if (g_szErrorPrefix[0])
+        fprintf(stderr, "%s - fatal error: ", g_szErrorPrefix);
+    else
+        fprintf(stderr, "fatal error: ");
+
+    va_start(va, pszFormat);
+    vfprintf(stderr, pszFormat, va);
+    va_end(va);
+
+    exit(1);
+}
+
+
+#if 0 /* unused */
+static void ErrorMsg(const char *pszFormat, ...)
+{
+    va_list va;
+
+    if (g_szErrorPrefix[0])
+        fprintf(stderr, "%s - error: ", g_szErrorPrefix);
+    else
+        fprintf(stderr, "error: ");
+
+    va_start(va, pszFormat);
+    vfprintf(stderr, pszFormat, va);
+    va_end(va);
+}
+#endif /* unused */
+
+
+static void InfoMsg(unsigned uLevel, const char *pszFormat, ...)
+{
+    if (uLevel <= g_cVerbosityLevel)
+    {
+        va_list va;
+
+        if (g_szErrorPrefix[0])
+            fprintf(stderr, "%s - info: ", g_szErrorPrefix);
+        else
+            fprintf(stderr, "info: ");
+
+        va_start(va, pszFormat);
+        vfprintf(stderr, pszFormat, va);
+        va_end(va);
+    }
+}
+
+
+static void SetErrorPrefix(const char *pszPrefix, ...)
+{
+    int cch;
+    va_list va;
+
+    va_start(va, pszPrefix);
+#if defined(_MSC_VER) || defined(__sun__)
+    cch = vsprintf(g_szErrorPrefix, pszPrefix, va);
+    if (cch >= sizeof(g_szErrorPrefix))
+        FatalDie("Buffer overflow setting error prefix!\n");
+#else
+    vsnprintf(g_szErrorPrefix, sizeof(g_szErrorPrefix), pszPrefix, va);
+#endif
+    va_end(va);
+    (void)cch;
+}
+
+#ifndef ELECTRIC_HEAP
+void *xmalloc(size_t cb)
+{
+    void *pv = malloc(cb);
+    if (!pv)
+        FatalDie("out of memory (%d)\n", (int)cb);
+    return pv;
+}
+
+
+void *xrealloc(void *pvOld, size_t cb)
+{
+    void *pv = realloc(pvOld, cb);
+    if (!pv)
+        FatalDie("out of memory (%d)\n", (int)cb);
+    return pv;
+}
+
+
+char *xstrdup(const char *pszIn)
+{
+    char *psz;
+    if (pszIn)
+    {
+        psz = strdup(pszIn);
+        if (!psz)
+            FatalDie("out of memory (%d)\n", (int)strlen(pszIn));
+    }
+    else
+        psz = NULL;
+    return psz;
+}
+#endif
+
+
+void *xmallocz(size_t cb)
+{
+    void *pv = xmalloc(cb);
+    memset(pv, 0, cb);
+    return pv;
+}
+
+
+
+
+
+/**
+ * Returns a millisecond timestamp.
+ *
+ * @returns Millisecond timestamp.
+ */
+static uint32_t NowMs(void)
+{
+#if defined(__WIN__)
+    return GetTickCount();
+#else
+    int             iSavedErrno = errno;
+    struct timeval  tv          = {0, 0};
+
+    gettimeofday(&tv, NULL);
+    errno = iSavedErrno;
+
+    return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+#endif
+}
+
+
+/**
+ * Gets the absolute path
+ *
+ * @returns A new heap buffer containing the absolute path.
+ * @param   pszPath     The path to make absolute. (Readonly)
+ */
+static char *AbsPath(const char *pszPath)
+{
+/** @todo this isn't really working as it should... */
+    char szTmp[PATH_MAX];
+#if defined(__OS2__)
+    if (    _fullpath(szTmp, *pszPath ? pszPath : ".", sizeof(szTmp))
+        &&  !realpath(pszPath, szTmp))
+        return xstrdup(pszPath);
+#elif defined(__WIN__)
+    if (!_fullpath(szTmp, *pszPath ? pszPath : ".", sizeof(szTmp)))
+        return xstrdup(pszPath);
+#else
+    if (!realpath(pszPath, szTmp))
+        return xstrdup(pszPath);
+#endif
+   return xstrdup(szTmp);
+}
+
+
+/**
+ * Utility function that finds the filename part in a path.
+ *
+ * @returns Pointer to the file name part (this may be "").
+ * @param   pszPath     The path to parse.
+ */
+static const char *FindFilenameInPath(const char *pszPath)
+{
+    const char *pszFilename = strchr(pszPath, '\0') - 1;
+    if (pszFilename < pszPath)
+        return pszPath;
+    while (     pszFilename > pszPath
+           &&   !IS_SLASH_DRV(pszFilename[-1]))
+        pszFilename--;
+    return pszFilename;
+}
+
+
+/**
+ * Utility function that combines a filename and a directory into a path.
+ *
+ * @returns malloced buffer containing the result.
+ * @param   pszName     The file name.
+ * @param   pszDir      The directory path.
+ */
+static char *MakePathFromDirAndFile(const char *pszName, const char *pszDir)
+{
+    size_t cchName = strlen(pszName);
+    size_t cchDir = strlen(pszDir);
+    char *pszBuf = xmalloc(cchName + cchDir + 2);
+    memcpy(pszBuf, pszDir, cchDir);
+    if (cchDir > 0 && !IS_SLASH_DRV(pszDir[cchDir - 1]))
+        pszBuf[cchDir++] = PATH_SLASH;
+    memcpy(pszBuf + cchDir, pszName, cchName + 1);
+    return pszBuf;
+}
+
+
+/**
+ * Compares two path strings to see if they are identical.
+ *
+ * This doesn't do anything fancy, just the case ignoring and
+ * slash unification.
+ *
+ * @returns 1 if equal, 0 otherwise.
+ * @param   pszPath1    The first path.
+ * @param   pszPath2    The second path.
+ */
+static int ArePathsIdentical(const char *pszPath1, const char *pszPath2)
+{
+#if defined(__OS2__) || defined(__WIN__)
+    if (stricmp(pszPath1, pszPath2))
+    {
+        /* Slashes may differ, compare char by char. */
+        const char *psz1 = pszPath1;
+        const char *psz2 = pszPath2;
+        for (;;)
+        {
+            if (*psz1 != *psz2)
+            {
+                if (    tolower(*psz1) != tolower(*psz2)
+                    &&  toupper(*psz1) != toupper(*psz2)
+                    &&  *psz1 != '/'
+                    &&  *psz1 != '\\'
+                    &&  *psz2 != '/'
+                    &&  *psz2 != '\\')
+                    return 0;
+            }
+            if (!*psz1)
+                break;
+            psz1++;
+            psz2++;
+        }
+    }
+    return 1;
+#else
+    return !strcmp(pszPath1, pszPath2);
+#endif
+}
+
+/**
+ * Compares two path strings to see if they are identical.
+ *
+ * This doesn't do anything fancy, just the case ignoring and
+ * slash unification.
+ *
+ * @returns 1 if equal, 0 otherwise.
+ * @param   pszPath1    The first path.
+ * @param   pszPath2    The second path.
+ * @param   cch         The number of characters to compare.
+ */
+static int ArePathsIdenticalN(const char *pszPath1, const char *pszPath2, size_t cch)
+{
+#if defined(__OS2__) || defined(__WIN__)
+    if (strnicmp(pszPath1, pszPath2, cch))
+    {
+        /* Slashes may differ, compare char by char. */
+        const char *psz1 = pszPath1;
+        const char *psz2 = pszPath2;
+        for ( ; cch; psz1++, psz2++, cch--)
+        {
+            if (*psz1 != *psz2)
+            {
+                if (    tolower(*psz1) != tolower(*psz2)
+                    &&  toupper(*psz1) != toupper(*psz2)
+                    &&  *psz1 != '/'
+                    &&  *psz1 != '\\'
+                    &&  *psz2 != '/'
+                    &&  *psz2 != '\\')
+                    return 0;
+            }
+        }
+    }
+    return 1;
+#else
+    return !strncmp(pszPath1, pszPath2, cch);
+#endif
+}
+
+
+/**
+ * Calculate how to get to pszPath from pszDir.
+ *
+ * @returns The relative path from pszDir to path pszPath.
+ * @param   pszPath     The path to the object.
+ * @param   pszDir      The directory it shall be relative to.
+ */
+static char *CalcRelativeName(const char *pszPath, const char *pszDir)
+{
+    char *pszRet = NULL;
+    char *pszAbsPath = NULL;
+    size_t cchDir = strlen(pszDir);
+
+    /*
+     * This is indeed a bit tricky, so we'll try the easy way first...
+     */
+    if (ArePathsIdenticalN(pszPath, pszDir, cchDir))
+    {
+        if (pszPath[cchDir])
+            pszRet = (char *)pszPath + cchDir;
+        else
+            pszRet = "./";
+    }
+    else
+    {
+        pszAbsPath = AbsPath(pszPath);
+        if (ArePathsIdenticalN(pszAbsPath, pszDir, cchDir))
+        {
+            if (pszPath[cchDir])
+                pszRet = pszAbsPath + cchDir;
+            else
+                pszRet = "./";
+        }
+    }
+    if (pszRet)
+    {
+        while (IS_SLASH_DRV(*pszRet))
+            pszRet++;
+        pszRet = xstrdup(pszRet);
+        free(pszAbsPath);
+        return pszRet;
+    }
+
+    /*
+     * Damn, it's gonna be complicated. Deal with that later.
+     */
+    FatalDie("complicated relative path stuff isn't implemented yet. sorry.\n");
+    return NULL;
+}
+
+
+/**
+ * Utility function that combines a filename and directory and passes it onto fopen.
+ *
+ * @returns fopen return value.
+ * @param   pszName     The file name.
+ * @param   pszDir      The directory path.
+ * @param   pszMode     The fopen mode string.
+ */
+static FILE *FOpenFileInDir(const char *pszName, const char *pszDir, const char *pszMode)
+{
+    char *pszPath = MakePathFromDirAndFile(pszName, pszDir);
+    FILE *pFile = fopen(pszPath, pszMode);
+    free(pszPath);
+    return pFile;
+}
+
+
+/**
+ * Utility function that combines a filename and directory and passes it onto open.
+ *
+ * @returns open return value.
+ * @param   pszName     The file name.
+ * @param   pszDir      The directory path.
+ * @param   fFlags      The open flags.
+ * @param   fCreateMode The file creation mode.
+ */
+static int OpenFileInDir(const char *pszName, const char *pszDir, int fFlags, int fCreateMode)
+{
+    char *pszPath = MakePathFromDirAndFile(pszName, pszDir);
+    int fd = open(pszPath, fFlags, fCreateMode);
+    free(pszPath);
+    return fd;
+}
+
+
+
+/**
+ * Deletes a file in a directory.
+ *
+ * @returns whatever unlink returns.
+ * @param   pszName     The file name.
+ * @param   pszDir      The directory path.
+ */
+static int UnlinkFileInDir(const char *pszName, const char *pszDir)
+{
+    char *pszPath = MakePathFromDirAndFile(pszName, pszDir);
+    int rc = unlink(pszPath);
+    free(pszPath);
+    return rc;
+}
+
+
+/**
+ * Renames a file in a directory.
+ *
+ * @returns whatever rename returns.
+ * @param   pszOldName  The new file name.
+ * @param   pszNewName  The old file name.
+ * @param   pszDir      The directory path.
+ */
+static int RenameFileInDir(const char *pszOldName, const char *pszNewName, const char *pszDir)
+{
+    char *pszOldPath = MakePathFromDirAndFile(pszOldName, pszDir);
+    char *pszNewPath = MakePathFromDirAndFile(pszNewName, pszDir);
+    int rc = rename(pszOldPath, pszNewPath);
+    free(pszOldPath);
+    free(pszNewPath);
+    return rc;
+}
+
+
+/**
+ * Check if a (regular) file exists in a directory.
+ *
+ * @returns 1 if it exists and is a regular file, 0 if not.
+ * @param   pszName     The file name.
+ * @param   pszDir      The directory path.
+ */
+static int DoesFileInDirExist(const char *pszName, const char *pszDir)
+{
+    char *pszPath = MakePathFromDirAndFile(pszName, pszDir);
+    struct stat st;
+    int rc = stat(pszPath, &st);
+    free(pszPath);
+#ifdef S_ISREG
+    return !rc && S_ISREG(st.st_mode);
+#elif defined(_MSC_VER)
+    return !rc && (st.st_mode & _S_IFMT) == _S_IFREG;
+#else
+#error "Port me"
+#endif
+}
+
+
+/**
+ * Reads into memory an entire file.
+ *
+ * @returns Pointer to the heap allocation containing the file.
+ *          On failure NULL and errno is returned.
+ * @param   pszName     The file.
+ * @param   pszDir      The directory the file resides in.
+ * @param   pcbFile     Where to store the file size.
+ */
+static void *ReadFileInDir(const char *pszName, const char *pszDir, size_t *pcbFile)
+{
+    int SavedErrno;
+    char *pszPath = MakePathFromDirAndFile(pszName, pszDir);
+    int fd = open(pszPath, O_RDONLY | O_BINARY);
+    if (fd >= 0)
+    {
+        off_t cbFile = lseek(fd, 0, SEEK_END);
+        if (    cbFile >= 0
+            &&  lseek(fd, 0, SEEK_SET) == 0)
+        {
+            char *pb = malloc(cbFile + 1);
+            if (pb)
+            {
+                if (read(fd, pb, cbFile) == cbFile)
+                {
+                    close(fd);
+                    pb[cbFile] = '\0';
+                    *pcbFile = (size_t)cbFile;
+                    return pb;
+                }
+                SavedErrno = errno;
+                free(pb);
+            }
+            else
+                SavedErrno = ENOMEM;
+        }
+        else
+            SavedErrno = errno;
+        close(fd);
+    }
+    else
+        SavedErrno = errno;
+    free(pszPath);
+    errno = SavedErrno;
+    return NULL;
+}
+
+
+/**
+ * Creates a directory including all necessary parent directories.
+ *
+ * @returns 0 on success, -1 + errno on failure.
+ * @param   pszDir      The directory.
+ */
+static int MakePath(const char *pszPath)
+{
+    int iErr = 0;
+    char *pszAbsPath = AbsPath(pszPath);
+    char *psz = pszAbsPath;
+
+    /* Skip to the root slash (PC). */
+    while (!IS_SLASH(*psz) && *psz)
+        psz++;
+/** @todo UNC */
+    for (;;)
+    {
+        char chSaved;
+
+        /* skip slashes */
+        while (IS_SLASH(*psz))
+            psz++;
+        if (!*psz)
+            break;
+
+        /* find the next slash or end and terminate the string. */
+        while (!IS_SLASH(*psz) && *psz)
+            psz++;
+        chSaved = *psz;
+        *psz = '\0';
+
+        /* try create the directory, ignore failure because the directory already exists. */
+        errno = 0;
+#ifdef _MSC_VER
+        if (    _mkdir(pszAbsPath)
+            &&  errno != EEXIST)
+#else
+        if (    mkdir(pszAbsPath, 0777)
+            &&  errno != EEXIST
+            &&  errno != ENOSYS /* Solaris nonsensical mkdir crap. */
+            &&  errno != EACCES /* Solaris nonsensical mkdir crap. */
+            )
+#endif
+        {
+            iErr = errno;
+            break;
+        }
+
+        /* restore the slash/terminator */
+        *psz = chSaved;
+    }
+
+    free(pszAbsPath);
+    return iErr ? -1 : 0;
+}
+
+
+/**
+ * Adds the arguments found in the pszCmdLine string to argument vector.
+ *
+ * The parsing of the pszCmdLine string isn't very sophisticated, no
+ * escaping or quotes.
+ *
+ * @param   pcArgs      Pointer to the argument counter.
+ * @param   ppapszArgs  Pointer to the argument vector pointer.
+ * @param   pszCmdLine  The command line to parse and append.
+ * @param   pszWedgeArg Argument to put infront of anything found in pszCmdLine.
+ */
+static void AppendArgs(int *pcArgs, char ***ppapszArgs, const char *pszCmdLine, const char *pszWedgeArg)
+{
+    int i;
+    int cExtraArgs;
+    const char *psz;
+    char **papszArgs;
+
+    /*
+     * Count the new arguments.
+     */
+    cExtraArgs = 0;
+    psz = pszCmdLine;
+    while (*psz)
+    {
+        while (isspace(*psz))
+            psz++;
+        if (!psz)
+            break;
+        cExtraArgs++;
+        while (!isspace(*psz) && *psz)
+            psz++;
+    }
+    if (!cExtraArgs)
+        return;
+
+    /*
+     * Allocate a new vector that can hold the arguments.
+     * (Reallocating might not work since the argv might not be allocated
+     *  from the heap but off the stack or somewhere... )
+     */
+    i = *pcArgs;
+    *pcArgs = i + cExtraArgs + !!pszWedgeArg;
+    papszArgs = xmalloc((*pcArgs + 1) * sizeof(char *));
+    *ppapszArgs = memcpy(papszArgs, *ppapszArgs, i * sizeof(char *));
+
+    if (pszWedgeArg)
+        papszArgs[i++] = xstrdup(pszWedgeArg);
+
+    psz = pszCmdLine;
+    while (*psz)
+    {
+        size_t cch;
+        const char *pszEnd;
+        while (isspace(*psz))
+            psz++;
+        if (!psz)
+            break;
+        pszEnd = psz;
+        while (!isspace(*pszEnd) && *pszEnd)
+            pszEnd++;
+
+        cch = pszEnd - psz;
+        papszArgs[i] = xmalloc(cch + 1);
+        memcpy(papszArgs[i], psz, cch);
+        papszArgs[i][cch] = '\0';
+
+        i++;
+        psz = pszEnd;
+    }
+
+    papszArgs[i] = NULL;
+}
+
+
+/**
+ * Dependency collector state.
+ */
+typedef struct KOCDEP
+{
+    /** The statemachine for processing the preprocessed code stream. */
+    enum KOCDEPSTATE
+    {
+        kOCDepState_Invalid = 0,
+        kOCDepState_NeedNewLine,
+        kOCDepState_NeedHash,
+        kOCDepState_NeedLine_l,
+        kOCDepState_NeedLine_l_HaveSpace,
+        kOCDepState_NeedLine_i,
+        kOCDepState_NeedLine_n,
+        kOCDepState_NeedLine_e,
+        kOCDepState_NeedSpaceBeforeDigit,
+        kOCDepState_NeedFirstDigit,
+        kOCDepState_NeedMoreDigits,
+        kOCDepState_NeedQuote,
+        kOCDepState_NeedEndQuote
+    }   enmState;
+    /** Current offset into the filename buffer. */
+    uint32_t offFilename;
+    /** The amount of space currently allocated for the filename buffer. */
+    uint32_t cbFilenameAlloced;
+    /** Pointer to the filename buffer. */
+    char *pszFilename;
+    /** The current dependency file. */
+    PDEP pCurDep;
+    /** The core dependency collector state. */
+    DEPGLOBALS Core;
+} KOCDEP;
+/** Pointer to a KOCDEP.  */
+typedef KOCDEP *PKOCDEP;
+
+
+/**
+ * Initializes the dependency collector state.
+ *
+ * @param   pDepState       The dependency collector state.
+ */
+static void kOCDepInit(PKOCDEP pDepState)
+{
+    pDepState->enmState = kOCDepState_NeedHash;
+    pDepState->offFilename = 0;
+    pDepState->cbFilenameAlloced = 0;
+    pDepState->pszFilename = NULL;
+    pDepState->pCurDep = NULL;
+    depInit(&pDepState->Core);
+}
+
+
+/**
+ * Deletes the dependency collector state, releasing all resources.
+ *
+ * @param   pDepState       The dependency collector state.
+ */
+static void kOCDepDelete(PKOCDEP pDepState)
+{
+    pDepState->enmState = kOCDepState_Invalid;
+    free(pDepState->pszFilename);
+    pDepState->pszFilename = NULL;
+    depCleanup(&pDepState->Core);
+}
+
+
+/**
+ * Unescapes a string in place.
+ *
+ * @returns The new string length.
+ * @param   psz             The string to unescape (input and output).
+ */
+static size_t kOCDepUnescape(char *psz)
+{
+    char *pszSrc = psz;
+    char *pszDst = psz;
+    char ch;
+
+    while ((ch = *pszSrc++) != '\0')
+    {
+        if (ch == '\\')
+        {
+            char ch2 = *pszSrc;
+            if (ch2)
+            {
+                pszSrc++;
+                ch = ch2;
+            }
+            /* else: cannot happen / just ignore */
+        }
+        *pszDst++ = ch;
+    }
+
+    *pszDst = '\0';
+    return pszDst - psz;
+}
+
+
+/**
+ * Checks if the character at @a offChar is escaped or not.
+ *
+ * @returns 1 if escaped, 0 if not.
+ * @param   pach            The string (not terminated).
+ * @param   offChar         The offset of the character in question.
+ */
+static int kOCDepIsEscaped(char *pach, size_t offChar)
+{
+    while (offChar > 0 && pach[offChar - 1] == '\\')
+    {
+        if (   offChar == 1
+            || pach[offChar - 2] != '\\')
+            return 1;
+        offChar -= 2;
+    }
+    return 0;
+}
+
+
+static void kOCDepEnter(PKOCDEP pDepState, const char *pszUnescFilename, size_t cchFilename)
+{
+    if (cchFilename + 1 >= pDepState->cbFilenameAlloced)
+    {
+        pDepState->cbFilenameAlloced = (cchFilename + 1 + 15) & ~15;
+        pDepState->pszFilename = (char *)xrealloc(pDepState->pszFilename, pDepState->cbFilenameAlloced);
+    }
+
+    memcpy(pDepState->pszFilename, pszUnescFilename, cchFilename);
+    pDepState->pszFilename[cchFilename] = '\0';
+    cchFilename = kOCDepUnescape(pDepState->pszFilename);
+
+    if (   !pDepState->pCurDep
+        || cchFilename != pDepState->pCurDep->cchFilename
+        || strcmp(pDepState->pszFilename, pDepState->pCurDep->szFilename))
+        pDepState->pCurDep = depAdd(&pDepState->Core, pDepState->pszFilename, cchFilename);
+}
+
+
+/**
+ * This consumes the preprocessor output and generate dependencies from it.
+ *
+ * The trick is to look at the line directives and which files get listed there.
+ *
+ * @returns The new state. This is a convenience for saving code space and it
+ *          isn't really meant to be of any use to the caller.
+ * @param   pDepState       The dependency collector state.
+ * @param   pszInput        The input.
+ * @param   cchInput        The input length.
+ */
+static enum KOCDEPSTATE
+kOCDepConsumer(PKOCDEP pDepState, const char *pszInput, size_t cchInput)
+{
+    enum KOCDEPSTATE enmState = pDepState->enmState;
+    const char *psz;
+
+    while (cchInput > 0)
+    {
+        switch (enmState)
+        {
+            case kOCDepState_NeedNewLine:
+                psz = (const char *)memchr(pszInput, '\n', cchInput);
+                if (!psz)
+                    return enmState;
+                psz++;
+                cchInput -= psz - pszInput;
+                pszInput = psz;
+                /* fall thru */
+
+            case kOCDepState_NeedHash:
+                while (cchInput > 0 && MY_IS_BLANK(*pszInput))
+                    cchInput--, pszInput++;
+                if (!cchInput)
+                    return pDepState->enmState = kOCDepState_NeedHash;
+
+                if (*pszInput != '#')
+                    break;
+                pszInput++;
+                cchInput--;
+                enmState = kOCDepState_NeedLine_l;
+                /* fall thru */
+
+            case kOCDepState_NeedLine_l:
+            case kOCDepState_NeedLine_l_HaveSpace:
+                while (cchInput > 0 && MY_IS_BLANK(*pszInput))
+                {
+                    enmState = kOCDepState_NeedLine_l_HaveSpace;
+                    cchInput--, pszInput++;
+                }
+                if (!cchInput)
+                    return pDepState->enmState = enmState;
+
+                if (*pszInput != 'l')
+                {
+                    /* # <digit> "<file>" */
+                    if (enmState != kOCDepState_NeedLine_l_HaveSpace || !isdigit(*pszInput))
+                        break;
+                    pszInput++;
+                    cchInput--;
+                    enmState = kOCDepState_NeedMoreDigits;
+                    continue;
+                }
+                pszInput++;
+                if (!--cchInput)
+                    return pDepState->enmState = kOCDepState_NeedLine_i;
+                /* fall thru */
+
+            case kOCDepState_NeedLine_i:
+                if (*pszInput != 'i')
+                    break;
+                pszInput++;
+                if (!--cchInput)
+                    return pDepState->enmState = kOCDepState_NeedLine_n;
+                /* fall thru */
+
+            case kOCDepState_NeedLine_n:
+                if (*pszInput != 'n')
+                    break;
+                pszInput++;
+                if (!--cchInput)
+                    return pDepState->enmState = kOCDepState_NeedLine_e;
+                /* fall thru */
+
+            case kOCDepState_NeedLine_e:
+                if (*pszInput != 'e')
+                    break;
+                pszInput++;
+                if (!--cchInput)
+                    return pDepState->enmState = kOCDepState_NeedSpaceBeforeDigit;
+                /* fall thru */
+
+            case kOCDepState_NeedSpaceBeforeDigit:
+                if (!MY_IS_BLANK(*pszInput))
+                    break;
+                pszInput++;
+                cchInput--;
+                /* fall thru */
+
+            case kOCDepState_NeedFirstDigit:
+                while (cchInput > 0 && MY_IS_BLANK(*pszInput))
+                    cchInput--, pszInput++;
+                if (!cchInput)
+                    return pDepState->enmState = kOCDepState_NeedFirstDigit;
+
+                if (!isdigit(*pszInput))
+                    break;
+                pszInput++;
+                cchInput--;
+                /* fall thru */
+
+            case kOCDepState_NeedMoreDigits:
+                while (cchInput > 0 && isdigit(*pszInput))
+                    cchInput--, pszInput++;
+                if (!cchInput)
+                    return pDepState->enmState = kOCDepState_NeedMoreDigits;
+                /* fall thru */
+
+            case kOCDepState_NeedQuote:
+                while (cchInput > 0 && MY_IS_BLANK(*pszInput))
+                    cchInput--, pszInput++;
+                if (!cchInput)
+                    return pDepState->enmState = kOCDepState_NeedQuote;
+
+                if (*pszInput != '"')
+                    break;
+                pszInput++;
+                cchInput--;
+                /* fall thru */
+
+            case kOCDepState_NeedEndQuote:
+            {
+                uint32_t off = pDepState->offFilename;
+                for (;;)
+                {
+                    char ch;
+
+                    if (!cchInput)
+                    {
+                        pDepState->offFilename = off;
+                        return pDepState->enmState = kOCDepState_NeedEndQuote;
+                    }
+
+                    if (off + 1 >= pDepState->cbFilenameAlloced)
+                    {
+                        if (!pDepState->cbFilenameAlloced)
+                            pDepState->cbFilenameAlloced = 32;
+                        else
+                            pDepState->cbFilenameAlloced *= 2;
+                        pDepState->pszFilename = (char *)xrealloc(pDepState->pszFilename, pDepState->cbFilenameAlloced);
+                    }
+                    pDepState->pszFilename[off] = ch = *pszInput++;
+                    cchInput--;
+
+                    if (   ch == '"'
+                        && (   off == 0
+                            || pDepState->pszFilename[off - 1] != '\\'
+                            || !kOCDepIsEscaped(pDepState->pszFilename, off)))
+                    {
+                        /* Done, unescape and add the file. */
+                        size_t cchFilename;
+
+                        pDepState->pszFilename[off] = '\0';
+                        cchFilename = kOCDepUnescape(pDepState->pszFilename);
+
+                        if (   !pDepState->pCurDep
+                            || cchFilename != pDepState->pCurDep->cchFilename
+                            || strcmp(pDepState->pszFilename, pDepState->pCurDep->szFilename))
+                            pDepState->pCurDep = depAdd(&pDepState->Core, pDepState->pszFilename, cchFilename);
+                        pDepState->offFilename = 0;
+                        break;
+                    }
+
+                    off++;
+                }
+            }
+            /* fall thru */
+
+            case kOCDepState_Invalid:
+                assert(0);
+                break;
+        }
+
+        /* next newline */
+        enmState = kOCDepState_NeedNewLine;
+    }
+
+    return pDepState->enmState = enmState;
+}
+
+
+/**
+ * Writes the dependencies to the specified file.
+ *
+ * @param   pDepState       The dependency collector state.
+ * @param   pszFilename     The name of the dependency file.
+ * @param   pszObjFile      The object file name, relative to @a pszObjDir.
+ * @param   pszObjDir       The object file directory.
+ * @param   fFixCase        Whether to fix the case of dependency files.
+ * @param   fQuiet          Whether to be quiet about the dependencies.
+ * @param   fGenStubs       Whether to generate stubs.
+ */
+static void kOCDepWriteToFile(PKOCDEP pDepState, const char *pszFilename, const char *pszObjFile, const char *pszObjDir,
+                              int fFixCase, int fQuiet, int fGenStubs)
+{
+    char *pszObjFileAbs;
+    char *psz;
+    FILE *pFile = fopen(pszFilename, "w");
+    if (!pFile)
+        FatalMsg("Failed to open dependency file '%s': %s\n", pszFilename, strerror(errno));
+
+    depOptimize(&pDepState->Core, fFixCase, fQuiet, NULL /*pszIgnoredExt*/);
+
+    /* Make object file name with unix slashes. */
+    pszObjFileAbs = MakePathFromDirAndFile(pszObjFile, pszObjDir);
+    psz = pszObjFileAbs;
+    while ((psz = strchr(psz, '\\')) != NULL)
+        *psz++ = '/';
+
+    depPrintTargetWithDeps(&pDepState->Core, pFile, pszObjFileAbs, 1 /*fEscapeTarget*/);
+    free(pszObjFileAbs);
+    if (fGenStubs)
+        depPrintStubs(&pDepState->Core, pFile);
+
+    if (fclose(pFile) != 0)
+        FatalMsg("Failed to write dependency file '%s': %s\n", pszFilename, strerror(errno));
+}
+
+
+/**
+ * Preprocessor output reader state.
+ */
+typedef struct KOCCPPRD
+{
+    /** Pointer to the preprocessor output. */
+    char *pszBuf;
+    /** Allocated buffer size. */
+    size_t cbBufAlloc;
+    /** Amount preprocessor output that we've completed optimizations for. */
+    size_t cchDstOptimized;
+    /** Offset to the start of the unoptimized source. */
+    size_t offSrcUnoptimized;
+    /** The offset of the next bits to process. */
+    size_t offSrcCur;
+    /** The offset where to put more raw preprocessor output. */
+    size_t offSrcRead;
+    /** The line number corresponding to offOptimized. */
+    uint32_t uOptLineNo;
+    /** The current line number. */
+    uint32_t uCurLineNo;
+    /** Set if we're done, clear if we're expecting more preprocessor output. */
+    int fDone;
+    /** The saved character at cchOptimized. */
+    char chSaved;
+    /** Whether the optimizations are enabled. */
+    int fOptimize;
+
+    /** Buffer holding the current file name (unescaped). */
+    char *pszFileNmBuf;
+    /** The size of the file name buffer. */
+    size_t cbFileNmBuf;
+    /** The length of the current file string. */
+    size_t cchCurFileNm;
+
+    /** Line directive / new line sequence buffer. */
+    char *pszLineBuf;
+    /** The size of the buffer pointed to by pszLineBuf. */
+    size_t cbLineBuf;
+
+    /** Set if we should work the dependency generator as well. */
+    PKOCDEP pDepState;
+} KOCCPPRD;
+/** Pointer to a preprocessor reader state. */
+typedef KOCCPPRD *PKOCCPPRD;
+
+
+/**
+ * Allocate the initial C preprocessor output buffer.
+ *
+ * @param   pCppRd      The C preprocessor reader instance.
+ * @param   cbOldCpp    The size of the output the last time.  This is 0 if
+ *                      there was not previous run.
+ * @param   fOptimize   Whether optimizations are enabled.
+ * @param   pDepState   Pointer to the dependency generator.  Must only be set
+ *                      if @a fOptimize is also set.
+ */
+static void kOCCppRdInit(PKOCCPPRD pCppRd, size_t cbOldCpp, int fOptimize, PKOCDEP pDepState)
+{
+    assert(!pDepState || fOptimize);
+
+    pCppRd->cbBufAlloc = cbOldCpp ? (cbOldCpp + KOC_BUF_INCR) & ~(KOC_BUF_ALIGNMENT - 1) : KOC_BUF_MIN;
+    pCppRd->pszBuf = xmalloc(pCppRd->cbBufAlloc);
+    pCppRd->cchCurFileNm = 0;
+    pCppRd->cchDstOptimized = 0;
+    pCppRd->offSrcUnoptimized = 0;
+    pCppRd->offSrcCur = 0;
+    pCppRd->offSrcRead = 0;
+    pCppRd->uOptLineNo = 1;
+    pCppRd->uCurLineNo = 1;
+    pCppRd->fDone = 0;
+    pCppRd->chSaved = 0;
+    pCppRd->fOptimize = fOptimize;
+
+    pCppRd->pszFileNmBuf = NULL;
+    pCppRd->cbFileNmBuf = 0;
+    pCppRd->cchCurFileNm = 0;
+
+    pCppRd->pszLineBuf = NULL;
+    pCppRd->cbLineBuf = 0;
+
+    pCppRd->pDepState = pDepState;
+}
+
+
+static void kOCCppRdDelete(PKOCCPPRD pCppRd)
+{
+    free(pCppRd->pszBuf);
+    pCppRd->pszBuf = NULL;
+
+    free(pCppRd->pszFileNmBuf);
+    pCppRd->pszFileNmBuf = NULL;
+
+    free(pCppRd->pszLineBuf);
+    pCppRd->pszLineBuf = NULL;
+}
+
+
+/**
+ * Allocate more buffer space for the C preprocessor output.
+ *
+ * @param   pCppRd      The C preprocessor reader instance.
+ */
+static size_t kOCCppRdGrowBuffer(PKOCCPPRD pCppRd)
+{
+    pCppRd->cbBufAlloc += KOC_BUF_INCR;
+    pCppRd->pszBuf = xrealloc(pCppRd->pszBuf, pCppRd->cbBufAlloc);
+
+    return pCppRd->cbBufAlloc - pCppRd->offSrcRead;
+}
+
+
+static size_t kOCCppRdOptInsert(PKOCCPPRD pCppRd, size_t cchSrcReplaced, const char *pchInsert, size_t cchInsert)
+{
+    size_t offDelta = 0;
+    size_t cchAvail;
+
+    pCppRd->offSrcUnoptimized += cchSrcReplaced;
+    assert(pCppRd->offSrcUnoptimized <= pCppRd->offSrcCur);
+    cchAvail = pCppRd->offSrcUnoptimized - pCppRd->cchDstOptimized;
+    if (cchAvail < cchInsert)
+    {
+        size_t const cbToMove = pCppRd->offSrcRead - pCppRd->offSrcUnoptimized;
+        assert(cbToMove <= pCppRd->offSrcRead);
+        offDelta = cchInsert - cchAvail;
+
+        while (pCppRd->offSrcRead + offDelta >= pCppRd->cbBufAlloc)
+            kOCCppRdGrowBuffer(pCppRd);
+
+        g_cMemMoves++;
+        g_cbMemMoved += cbToMove + 1;
+        memmove(pCppRd->pszBuf + pCppRd->offSrcUnoptimized + offDelta,
+                pCppRd->pszBuf + pCppRd->offSrcUnoptimized,
+                cbToMove + 1);
+
+        pCppRd->offSrcRead += offDelta;
+        pCppRd->offSrcUnoptimized += offDelta;
+        pCppRd->offSrcCur += offDelta;
+        assert(pCppRd->offSrcRead < 1 || pCppRd->pszBuf[pCppRd->offSrcRead - 1] != '\0');
+    }
+
+    memcpy(pCppRd->pszBuf + pCppRd->cchDstOptimized, pchInsert, cchInsert);
+    pCppRd->cchDstOptimized += cchInsert;
+
+    return offDelta;
+}
+
+
+static void kOCCppRdOptCommit(PKOCCPPRD pCppRd)
+{
+    size_t cchToCommit = pCppRd->offSrcCur - pCppRd->offSrcUnoptimized;
+    assert(pCppRd->offSrcUnoptimized <= pCppRd->offSrcCur);
+
+    if (cchToCommit)
+    {
+        memmove(pCppRd->pszBuf + pCppRd->cchDstOptimized, pCppRd->pszBuf + pCppRd->offSrcUnoptimized, cchToCommit);
+        pCppRd->cchDstOptimized += cchToCommit;
+        pCppRd->offSrcUnoptimized = pCppRd->offSrcCur;
+    }
+
+    pCppRd->uOptLineNo = pCppRd->uCurLineNo;
+}
+
+
+
+static char *kOCCppRdOptGetEol(PKOCCPPRD pCppRd, char *pszCur, size_t cbLeft)
+{
+    char *pszEol = memchr(pszCur, '\n', cbLeft);
+    if (pszEol)
+    {
+        if (pszCur != pszEol && pszEol[-1] == '\r')
+            pszEol--;
+    }
+    else if (pCppRd->fDone && cbLeft)
+        pszEol = pszCur + cbLeft;
+    return pszEol;
+}
+
+static void kOCCppRdOptSetFile(PKOCCPPRD pCppRd, const char *pchFile, size_t cchFile)
+{
+    if (cchFile >= pCppRd->cbFileNmBuf)
+    {
+        pCppRd->cbFileNmBuf  = (cchFile + 15 + 1) & ~(size_t)15;
+        pCppRd->pszFileNmBuf = xrealloc(pCppRd->pszFileNmBuf, pCppRd->cbFileNmBuf);
+    }
+    memcpy(pCppRd->pszFileNmBuf, pchFile, cchFile);
+    pCppRd->pszFileNmBuf[cchFile] = '\0';
+    pCppRd->cchCurFileNm = cchFile;
+}
+
+
+static size_t kOCCppRdOptFmtLine(PKOCCPPRD pCppRd, uint32_t uLine, const char *pchFile, size_t cchFile)
+{
+    size_t cchUsed;
+    size_t cbNeeded;
+
+    /* Make sure we've got enough buffer space. */
+    cbNeeded = sizeof("#line 4888222111 \"\"\n") + cchFile;
+    if (cbNeeded > pCppRd->cbLineBuf)
+    {
+        pCppRd->cbLineBuf  = (cbNeeded + 32 + 15) & ~(size_t)15;
+        pCppRd->pszLineBuf = xrealloc(pCppRd->pszLineBuf, pCppRd->cbLineBuf);
+    }
+
+    /* Do the formatting. */
+    cchUsed = sprintf(pCppRd->pszLineBuf, "#line %lu", (unsigned long)uLine);
+    if (cchFile)
+    {
+        pCppRd->pszLineBuf[cchUsed++] = ' ';
+        pCppRd->pszLineBuf[cchUsed++] = '"';
+        memcpy(&pCppRd->pszLineBuf[cchUsed], pchFile, cchFile);
+        cchUsed += cchFile;
+        pCppRd->pszLineBuf[cchUsed++] = '"';
+    }
+    pCppRd->pszLineBuf[cchUsed++] = '\n';
+    pCppRd->pszLineBuf[cchUsed] = '\0';
+
+    return cchUsed;
+}
+
+
+static size_t kOCCppRdOptFmtNewLines(PKOCCPPRD pCppRd, uint32_t cNewLines)
+{
+    if (cNewLines + 1 > pCppRd->cbLineBuf)
+    {
+        pCppRd->cbLineBuf  = (cNewLines + 1 + 32 + 15) & ~(size_t)15;
+        pCppRd->pszLineBuf = xrealloc(pCppRd->pszLineBuf, pCppRd->cbLineBuf);
+    }
+
+    memset(pCppRd->pszLineBuf, '\n', cNewLines);
+    pCppRd->pszLineBuf[cNewLines] = '\0';
+    return cNewLines;
+}
+
+
+static size_t kOCCppRdOptFlush(PKOCCPPRD pCppRd, size_t offSrcCur, int fLineDirNext)
+{
+    size_t offDelta = 0;
+    size_t const offSrcUnoptimized = pCppRd->offSrcUnoptimized;
+    assert(offSrcUnoptimized <= offSrcCur);
+
+    if (offSrcCur > offSrcUnoptimized)
+    {
+        /*
+         * We've got unflushed whitelines.
+         */
+        size_t const cchSrcInQuestion = offSrcCur - offSrcUnoptimized;
+        uint32_t const cLinesInQuestion = pCppRd->uCurLineNo - pCppRd->uOptLineNo;
+        size_t cchLineDir;
+
+        if (   cLinesInQuestion <= 7
+            || (cchLineDir = kOCCppRdOptFmtLine(pCppRd, pCppRd->uCurLineNo, NULL, 0)) >= cLinesInQuestion)
+            cchLineDir = kOCCppRdOptFmtNewLines(pCppRd, cLinesInQuestion);
+
+        offDelta = kOCCppRdOptInsert(pCppRd, cchSrcInQuestion, pCppRd->pszLineBuf, cchLineDir);
+    }
+
+    (void)fLineDirNext; /* Use later if required. */
+    return offDelta;
+}
+
+
+static int kOCCppRdOptParseLine(PKOCCPPRD pCppRd, char *pszCur, char *pszEol,
+                                uint32_t *puNewLineNo, char **ppszNewFile, size_t *pcchNewFile)
+{
+    char    *psz = pszCur;
+    uint32_t uNewLineNo;
+    int      fIsShort;
+
+    /*
+     * Check if it's a #line directive of some kind and parse it.
+     */
+    if (*psz != '#')
+        return 0;
+    psz++;
+
+    fIsShort = MY_IS_BLANK(*psz);
+    while (MY_IS_BLANK(*psz))
+        psz++;
+
+    if (   psz[0] == 'l'
+        && psz[1] == 'i'
+        && psz[2] == 'n'
+        && psz[3] == 'e'
+        && MY_IS_BLANK(psz[4]) )
+    {
+        fIsShort = 0;
+        psz += 5;
+        while (MY_IS_BLANK(*psz))
+            psz++;
+    }
+    else if (fIsShort && isdigit(*psz))
+        fIsShort = 1;
+    else
+        return 0;
+
+    /* Parse the line number. */
+    if (!isdigit(*psz))
+        return 0;
+
+    uNewLineNo = *psz++ - '0';
+    while (isdigit(*psz))
+    {
+        uNewLineNo *= 10;
+        uNewLineNo += *psz++ - '0';
+    }
+    if (   psz != pszEol
+        && !MY_IS_BLANK(*psz))
+        return 0;
+
+    /*
+     * The file name part is optional.
+     */
+    while (MY_IS_BLANK(*psz))
+        psz++;
+
+    if (   psz != pszEol
+        && *psz == '"')
+    {
+        *ppszNewFile = ++psz;
+        while (   psz != pszEol
+               && (   *psz != '"'
+                   || (   psz[-1] == '\\'
+                       && kOCDepIsEscaped(psz, psz - *ppszNewFile)) )
+              )
+            psz++;
+        if (psz == pszEol)
+        {
+            /** @todo complain? */
+            return 0;
+        }
+        *pcchNewFile = psz - *ppszNewFile;
+
+        do
+            psz++;
+        while (psz != pszEol && MY_IS_BLANK(*psz));
+    }
+    else
+    {
+        /* No file given => Same as the current. */
+        *ppszNewFile = pCppRd->cchCurFileNm ? pCppRd->pszFileNmBuf : NULL;
+        *pcchNewFile = pCppRd->cchCurFileNm;
+    }
+    if (psz != pszEol)
+    {
+        /** @todo complain? */
+        return 0;
+    }
+
+    *puNewLineNo = uNewLineNo;
+    return 1;
+}
+
+
+static char *kOCCppRdOptHandleLine(PKOCCPPRD pCppRd, char *pszCur, size_t *pcbLeft, int *pfEmptyLine, char *pszEol)
+{
+    size_t const offSrcLine = pCppRd->offSrcCur;
+    size_t const cchSrcLine = pszEol - pCppRd->pszBuf - (pCppRd->fOptimize & 2 ? pCppRd->offSrcUnoptimized : pCppRd->offSrcCur);
+    size_t const cbLeftAssert = *pcbLeft;
+    char *pszNewFile;
+    size_t cchNewFile;
+    uint32_t uNewLineNo;
+    assert(*pszEol == '\r' || *pszEol == '\n' || *pszEol == '\0');
+
+    /* Advance to the end of the line before we do anything.  This can be a
+       little confusing but it saves effort and avoid trouble in the end. */
+    pCppRd->offSrcCur = pszEol - pCppRd->pszBuf;
+    *pcbLeft -= pszEol - pszCur;
+    assert(*pcbLeft <= cbLeftAssert); (void)cbLeftAssert;
+
+    /*
+     * Try parse the directive a '#line' one....
+     */
+    if (!kOCCppRdOptParseLine(pCppRd, pszCur, pszEol, &uNewLineNo, &pszNewFile, &cchNewFile))
+    {
+        /*
+         * No line directive.  Flush pending optimizations and indicate that
+         * the line isn't empty and needs to be commited at EOL.
+         */
+        kOCCppRdOptFlush(pCppRd, offSrcLine, 0);
+        *pfEmptyLine = 0;
+    }
+    else
+    {
+        char *pszCurFile = pCppRd->cchCurFileNm ? pCppRd->pszFileNmBuf : NULL;
+        if (   pszNewFile == pszCurFile
+            || (   cchNewFile == pCppRd->cchCurFileNm
+                && !memcmp(pszNewFile, pszCurFile, cchNewFile)) )
+        {
+            /*
+             * A #line directive specifying the same file.
+             */
+            if (uNewLineNo >= pCppRd->uCurLineNo)
+                *pfEmptyLine = 1;
+            else
+            {
+                /*
+                 * It went backwards, so we need to flush the old section of
+                 * the file and emit another directive for starting the new one.
+                 */
+                size_t cchLineDir;
+                if (!(pCppRd->fOptimize & 2))
+                    kOCCppRdOptFlush(pCppRd, offSrcLine, 1);
+
+                cchLineDir = kOCCppRdOptFmtLine(pCppRd, uNewLineNo, NULL, 0) - 1; /* sans \n */
+                kOCCppRdOptInsert(pCppRd, cchSrcLine, pCppRd->pszLineBuf, cchLineDir);
+
+                *pfEmptyLine = 0;
+            }
+        }
+        else
+        {
+            /*
+             * The #line directive changed the file.
+             */
+            size_t cchLineDir;
+
+            kOCCppRdOptSetFile(pCppRd, pszNewFile, cchNewFile); /* save to do this early */
+            if (!(pCppRd->fOptimize & 2))
+                kOCCppRdOptFlush(pCppRd, offSrcLine, 1);
+
+            cchLineDir = kOCCppRdOptFmtLine(pCppRd, uNewLineNo, pCppRd->pszFileNmBuf, cchNewFile) - 1; /* sans \n */
+            kOCCppRdOptInsert(pCppRd, cchSrcLine, pCppRd->pszLineBuf, cchLineDir);
+
+            if (pCppRd->pDepState)
+                kOCDepEnter(pCppRd->pDepState, pCppRd->pszFileNmBuf, cchNewFile);
+
+            *pfEmptyLine = 0;
+        }
+
+        pCppRd->uCurLineNo = uNewLineNo - 1;
+    }
+
+    return pCppRd->pszBuf + pCppRd->offSrcCur;
+}
+
+
+static void kOCCppRdOpt(PKOCCPPRD pCppRd)
+{
+    size_t cch;
+    char *pszEol;
+    char *pszCur = pCppRd->pszBuf + pCppRd->offSrcCur;
+    size_t cbTodo = pCppRd->offSrcRead - pCppRd->offSrcCur;
+    int fEmptyLine = 1;
+
+    while (cbTodo > 0)
+    {
+        switch (*pszCur)
+        {
+            case ' ':
+            case '\t':
+                break;
+
+            case '\n':
+                pCppRd->offSrcCur = pszCur - pCppRd->pszBuf + 1;
+                pCppRd->uCurLineNo++;
+                if (!fEmptyLine)
+                    kOCCppRdOptCommit(pCppRd);
+                fEmptyLine = 1;
+                break;
+
+            case '\r': /* "\r\n" -> "\n" */
+                if (cbTodo <= 1 && !pCppRd->fDone)
+                    return;
+                if (pszCur[1] == '\n' && !fEmptyLine)
+                {
+                    /* Commit the part up to the '\r' first, replace '\r\n' with '\n'. */
+                    pCppRd->offSrcCur = pszCur - pCppRd->pszBuf;
+                    kOCCppRdOptCommit(pCppRd);
+
+                    pCppRd->offSrcCur += 2;
+                    kOCCppRdOptInsert(pCppRd, 2, "\n", 1);
+
+                    assert(cbTodo >= 2);
+                    cbTodo -= 2;
+                    pszCur += 2;
+
+                    fEmptyLine = 1;
+                    continue;
+                }
+                break;
+
+            case '#':
+                pszEol = kOCCppRdOptGetEol(pCppRd, pszCur + 1, cbTodo - 1);
+                if (!pszEol)
+                    return;
+                pszCur = kOCCppRdOptHandleLine(pCppRd, pszCur, &cbTodo, &fEmptyLine, pszEol);
+                continue;
+
+            default:
+                /*
+                 * Some non-white stuff encountered, flush pending white
+                 * line optimizations and skip to the end of the line.
+                 */
+                fEmptyLine = 0;
+                pszEol = kOCCppRdOptGetEol(pCppRd, pszCur + 1, cbTodo - 1);
+                if (!pszEol)
+                    return;
+                cch = pszEol - pszCur;
+
+                pszCur += kOCCppRdOptFlush(pCppRd, pCppRd->offSrcCur, 0);
+
+                assert(cch <= cbTodo);
+                cbTodo -= cch;
+                pszCur += cch;
+                continue;
+        }
+
+        cbTodo--;
+        pszCur++;
+    }
+}
+
+
+static void kOCCppRdOptFinalize(PKOCCPPRD pCppRd)
+{
+    pCppRd->fDone = 1;
+    assert(pCppRd->offSrcRead < 1 || pCppRd->pszBuf[pCppRd->offSrcRead - 1] != '\0');
+    pCppRd->pszBuf[pCppRd->offSrcRead] = '\0';
+    kOCCppRdOpt(pCppRd);
+
+    assert(pCppRd->offSrcCur == pCppRd->offSrcRead);
+    kOCCppRdOptFlush(pCppRd, pCppRd->offSrcCur, 0);
+}
+
+
+
+/**
+ * Read C preprocessor output from the given file descriptor, optionally
+ * optimzing it.
+ *
+ * @returns Number of bytes read. 0 indicates end of file.
+ *
+ * @param   pCppRd      The C preprocessor reader instance.
+ * @param   fdIn        The file descriptor to read the raw preprocessor output
+ *                      from.
+ * @param   ppszRet     Where to return the pointer to the output.
+ *
+ * @remarks Won't return on error, calls FatalDie on those occasions.
+ */
+static long kOCCppRdRead(PKOCCPPRD pCppRd, int fdIn, const char **ppszRet)
+{
+    size_t cbLeft;
+    long   cbRead;
+
+    if (pCppRd->fOptimize)
+    {
+        /*
+         * Optimize the C preprocessor output on the way thru.
+         */
+        size_t const cchOldOptimized = pCppRd->cchDstOptimized;
+        if (pCppRd->chSaved)
+            pCppRd->pszBuf[pCppRd->cchDstOptimized] = pCppRd->chSaved;
+
+        do
+        {
+            /* Read more raw C preprocessor output. */
+            cbLeft = pCppRd->cbBufAlloc - pCppRd->offSrcRead;
+            if (cbLeft <= 1)
+                cbLeft = kOCCppRdGrowBuffer(pCppRd);
+
+            do
+                cbRead = read(fdIn, pCppRd->pszBuf + pCppRd->offSrcRead, (long)(cbLeft - 1));
+            while (cbRead < 0 && errno == EINTR);
+            if (cbRead < 0)
+                FatalDie("kOCCppRdRead - read(%d,,%ld) failed: %s\n",
+                         fdIn, (long)(cbLeft - 1), strerror(errno));
+            pCppRd->offSrcRead += cbRead;
+
+            /* Optimize it. */
+            if (!cbRead)
+            {
+                kOCCppRdOptFinalize(pCppRd);
+                break;
+            }
+            kOCCppRdOpt(pCppRd);
+        } while (pCppRd->cchDstOptimized == cchOldOptimized);
+
+        *ppszRet = &pCppRd->pszBuf[cchOldOptimized];
+        pCppRd->chSaved = pCppRd->pszBuf[pCppRd->cchDstOptimized];
+        pCppRd->pszBuf[pCppRd->cchDstOptimized] = '\0';
+        cbRead = (long)(pCppRd->cchDstOptimized - cchOldOptimized);
+    }
+    else
+    {
+        /*
+         * Pass thru.
+         */
+        char *pszBuf;
+        cbLeft = pCppRd->cbBufAlloc - pCppRd->offSrcRead;
+        if (cbLeft <= 1)
+            cbLeft = kOCCppRdGrowBuffer(pCppRd);
+        pszBuf = pCppRd->pszBuf + pCppRd->offSrcRead;
+
+        do
+            cbRead = read(fdIn, pszBuf, (long)(cbLeft - 1));
+        while (cbRead < 0 && errno == EINTR);
+        if (cbRead < 0)
+            FatalDie("kOCCppRdRead - read(%d,,%ld) failed: %s\n",
+                     fdIn, (long)(cbLeft - 1), strerror(errno));
+
+        *ppszRet = pszBuf;
+        pCppRd->offSrcRead += cbRead;
+        pszBuf[cbRead] = '\0';
+    }
+
+    return cbRead;
+}
+
+
+/**
+ * Grabs the output buffer from the C preprocessor reader.
+ *
+ * @param   pCppRd              The C preprocessor reader instance.
+ * @param   ppszRet             Where to return the pointer to the output.
+ * @param   pcbRet              Where to return the size of the output.
+ */
+static void kOCCppRdGrabOutput(PKOCCPPRD pCppRd, char **ppszRet, size_t *pcbRet)
+{
+    assert(pCppRd->offSrcRead < 1 || pCppRd->pszBuf[pCppRd->offSrcRead - 1] != '\0');
+    *ppszRet = pCppRd->pszBuf;
+    *pcbRet  = pCppRd->fOptimize ? pCppRd->cchDstOptimized : pCppRd->offSrcRead;
+    pCppRd->pszBuf = NULL;
+    pCppRd->offSrcRead = 0;
+}
+
+
+
+
+
+
+/** A checksum list entry.
+ * We keep a list checksums (of preprocessor output) that matches.
+ *
+ * The matching algorithm doesn't require the preprocessor output to be
+ * indentical, only to produce the same object files.
+ */
+typedef struct KOCSUM
+{
+    /** The next checksum. */
+    struct KOCSUM *pNext;
+    /** The crc32 checksum. */
+    uint32_t crc32;
+    /** The MD5 digest. */
+    unsigned char md5[16];
+    /** Valid or not. */
+    unsigned fUsed;
+} KOCSUM;
+/** Pointer to a KOCSUM. */
+typedef KOCSUM *PKOCSUM;
+/** Pointer to a const KOCSUM. */
+typedef const KOCSUM *PCKOCSUM;
+
+
+/**
+ * Temporary context record used when calculating the checksum of some data.
+ */
+typedef struct KOCSUMCTX
+{
+    /** The MD5 context. */
+    struct MD5Context MD5Ctx;
+} KOCSUMCTX;
+/** Pointer to a check context record. */
+typedef KOCSUMCTX *PKOCSUMCTX;
+
+
+
+/**
+ * Initializes a checksum object with an associated context.
+ *
+ * @param   pSum    The checksum object.
+ * @param   pCtx    The checksum context.
+ */
+static void kOCSumInitWithCtx(PKOCSUM pSum, PKOCSUMCTX pCtx)
+{
+    memset(pSum, 0, sizeof(*pSum));
+    MD5Init(&pCtx->MD5Ctx);
+}
+
+
+/**
+ * Updates the checksum calculation.
+ *
+ * @param   pSum    The checksum.
+ * @param   pCtx    The checksum calcuation context.
+ * @param   pvBuf   The input data to checksum.
+ * @param   cbBuf   The size of the input data.
+ */
+static void kOCSumUpdate(PKOCSUM pSum, PKOCSUMCTX pCtx, const void *pvBuf, size_t cbBuf)
+{
+    /*
+     * Take in relativly small chunks to try keep it in the cache.
+     */
+    const unsigned char *pb = (const unsigned char *)pvBuf;
+    while (cbBuf > 0)
+    {
+        size_t cb = cbBuf >= 128*1024 ? 128*1024 : cbBuf;
+        pSum->crc32 = crc32(pSum->crc32, pb, cb);
+        MD5Update(&pCtx->MD5Ctx, pb, (unsigned)cb);
+        cbBuf -= cb;
+    }
+}
+
+
+/**
+ * Finalizes a checksum calculation.
+ *
+ * @param   pSum    The checksum.
+ * @param   pCtx    The checksum calcuation context.
+ */
+static void kOCSumFinalize(PKOCSUM pSum, PKOCSUMCTX pCtx)
+{
+    MD5Final(&pSum->md5[0], &pCtx->MD5Ctx);
+    pSum->fUsed = 1;
+}
+
+
+/**
+ * Init a check sum chain head.
+ *
+ * @param   pSumHead    The checksum head to init.
+ */
+static void kOCSumInit(PKOCSUM pSumHead)
+{
+    memset(pSumHead, 0, sizeof(*pSumHead));
+}
+
+
+/**
+ * Parses the given string into a checksum head object.
+ *
+ * @returns 0 on success, -1 on format error.
+ * @param   pSumHead    The checksum head to init.
+ * @param   pszVal      The string to initialized it from.
+ */
+static int kOCSumInitFromString(PKOCSUM pSumHead, const char *pszVal)
+{
+    unsigned i;
+    char *pszNext;
+    char *pszMD5;
+
+    memset(pSumHead, 0, sizeof(*pSumHead));
+
+    pszMD5 = strchr(pszVal, ':');
+    if (pszMD5 == NULL)
+        return -1;
+    *pszMD5++ = '\0';
+
+    /* crc32 */
+    pSumHead->crc32 = (uint32_t)strtoul(pszVal, &pszNext, 16);
+    if (pszNext && *pszNext)
+        return -1;
+
+    /* md5 */
+    for (i = 0; i < sizeof(pSumHead->md5) * 2; i++)
+    {
+        unsigned char ch = pszMD5[i];
+        int x;
+        if ((unsigned char)(ch - '0') <= 9)
+            x = ch - '0';
+        else if ((unsigned char)(ch - 'a') <= 5)
+            x = ch - 'a' + 10;
+        else if ((unsigned char)(ch - 'A') <= 5)
+            x = ch - 'A' + 10;
+        else
+            return -1;
+        if (!(i & 1))
+            pSumHead->md5[i >> 1] = x << 4;
+        else
+            pSumHead->md5[i >> 1] |= x;
+    }
+
+    pSumHead->fUsed = 1;
+    return 0;
+}
+
+
+/**
+ * Delete a check sum chain.
+ *
+ * @param   pSumHead    The head of the checksum chain.
+ */
+static void kOCSumDeleteChain(PKOCSUM pSumHead)
+{
+    PKOCSUM pSum = pSumHead->pNext;
+    while (pSum)
+    {
+        void *pvFree = pSum;
+        pSum = pSum->pNext;
+        free(pvFree);
+    }
+    memset(pSumHead, 0, sizeof(*pSumHead));
+}
+
+
+/**
+ * Insert a check sum into the chain.
+ *
+ * @param   pSumHead    The head of the checksum list.
+ * @param   pSumAdd     The checksum to add (duplicate).
+ */
+static void kOCSumAdd(PKOCSUM pSumHead, PCKOCSUM pSumAdd)
+{
+    if (pSumHead->fUsed)
+    {
+        PKOCSUM pNew = xmalloc(sizeof(*pNew));
+        *pNew = *pSumAdd;
+        pNew->pNext = pSumHead->pNext;
+        pNew->fUsed = 1;
+        pSumHead->pNext = pNew;
+    }
+    else
+    {
+        *pSumHead = *pSumAdd;
+        pSumHead->pNext = NULL;
+        pSumHead->fUsed = 1;
+    }
+}
+
+
+/**
+ * Inserts an entrie chain into the given check sum chain.
+ *
+ * @param   pSumHead    The head of the checksum list.
+ * @param   pSumHeadAdd The head of the checksum list to be added.
+ */
+static void kOCSumAddChain(PKOCSUM pSumHead, PCKOCSUM pSumHeadAdd)
+{
+    while (pSumHeadAdd)
+    {
+        kOCSumAdd(pSumHead, pSumHeadAdd);
+        pSumHeadAdd = pSumHeadAdd->pNext;
+    }
+}
+
+
+
+/**
+ * Prints the checksum to the specified stream.
+ *
+ * @param   pSum    The checksum.
+ * @param   pFile   The output file stream
+ */
+static void kOCSumFPrintf(PCKOCSUM pSum, FILE *pFile)
+{
+    fprintf(pFile, "%#x:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
+            pSum->crc32,
+            pSum->md5[0], pSum->md5[1], pSum->md5[2], pSum->md5[3],
+            pSum->md5[4], pSum->md5[5], pSum->md5[6], pSum->md5[7],
+            pSum->md5[8], pSum->md5[9], pSum->md5[10], pSum->md5[11],
+            pSum->md5[12], pSum->md5[13], pSum->md5[14], pSum->md5[15]);
+}
+
+
+/**
+ * Displays the checksum (not chain!) using the InfoMsg() method.
+ *
+ * @param   pSum    The checksum.
+ * @param   uLevel  The info message level.
+ * @param   pszMsg  Message to prefix the info message with.
+ */
+static void kOCSumInfo(PCKOCSUM pSum, unsigned uLevel, const char *pszMsg)
+{
+    InfoMsg(uLevel,
+            "%s: crc32=%#010x md5=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
+            pszMsg,
+            pSum->crc32,
+            pSum->md5[0], pSum->md5[1], pSum->md5[2], pSum->md5[3],
+            pSum->md5[4], pSum->md5[5], pSum->md5[6], pSum->md5[7],
+            pSum->md5[8], pSum->md5[9], pSum->md5[10], pSum->md5[11],
+            pSum->md5[12], pSum->md5[13], pSum->md5[14], pSum->md5[15]);
+}
+
+
+/**
+ * Compares two check sum entries.
+ *
+ * @returns 1 if equal, 0 if not equal.
+ *
+ * @param pSum1     The first checksum.
+ * @param pSum2     The second checksum.
+ */
+static int kOCSumIsEqual(PCKOCSUM pSum1, PCKOCSUM pSum2)
+{
+    if (pSum1 == pSum2)
+        return 1;
+    if (!pSum1 || !pSum2)
+        return 0;
+    if (pSum1->crc32 != pSum2->crc32)
+        return 0;
+    if (memcmp(&pSum1->md5[0], &pSum2->md5[0], sizeof(pSum1->md5)))
+        return 0;
+    return 1;
+}
+
+
+/**
+ * Checks if the specified checksum equals one of the
+ * checksums in the chain.
+ *
+ * @returns 1 if equals one of them, 0 if not.
+ *
+ * @param pSumHead  The checksum chain too look in.
+ * @param pSum      The checksum to look for.
+ * @todo ugly name. fix.
+ */
+static int kOCSumHasEqualInChain(PCKOCSUM pSumHead, PCKOCSUM pSum)
+{
+    for (; pSumHead; pSumHead = pSumHead->pNext)
+    {
+        if (pSumHead == pSum)
+            return 1;
+        if (pSumHead->crc32 != pSum->crc32)
+            continue;
+        if (memcmp(&pSumHead->md5[0], &pSum->md5[0], sizeof(pSumHead->md5)))
+            continue;
+        return 1;
+    }
+    return 0;
+}
+
+
+/**
+ * Checks if the checksum (chain) empty.
+ *
+ * @returns 1 if empty, 0 if it there is one or more checksums.
+ * @param   pSum    The checksum to test.
+ */
+static int kOCSumIsEmpty(PCKOCSUM pSum)
+{
+    return !pSum->fUsed;
+}
+
+
+
+
+
+
+/**
+ * The representation of a cache entry.
+ */
+typedef struct KOCENTRY
+{
+    /** The name of the cache entry. */
+    const char *pszName;
+    /** The dir that all other names are relative to. */
+    char *pszDir;
+    /** The absolute path. */
+    char *pszAbsPath;
+    /** Set if the object needs to be (re)compiled. */
+    unsigned fNeedCompiling;
+    /** Whether the preprocessor runs in piped mode. If clear it's file
+     * mode (it could be redirected stdout, but that's essentially the
+     * same from our point of view). */
+    unsigned fPipedPreComp;
+    /** Whether the compiler runs in piped mode (preprocessor output on stdin). */
+    unsigned fPipedCompile;
+    /** The name of the pipe that we're feeding the preprocessed output to the
+     *  compiler via.  This is a Windows thing. */
+    char *pszNmPipeCompile;
+    /** Name of the dependency file (generated from #line statements in the
+     * preprocessor output). */
+    char *pszMakeDepFilename;
+    /** Whether to fix the case of the make depedencies. */
+    int fMakeDepFixCase;
+    /** Whether to do the make dependencies quietly. */
+    int fMakeDepQuiet;
+    /** Whether to generate stubs for headers files. */
+    int fMakeDepGenStubs;
+    /** The dependency collector state.  */
+    KOCDEP DepState;
+    /** Whether the optimizations are enabled. */
+    int fOptimizeCpp;
+    /** Cache entry key that's used for some quick digest validation. */
+    uint32_t uKey;
+
+    /** The file data. */
+    struct KOCENTRYDATA
+    {
+        /** The name of file containing the preprocessor output. */
+        char *pszCppName;
+        /** Pointer to the preprocessor output. */
+        char *pszCppMapping;
+        /** The size of the preprocessor output. 0 if not determined. */
+        size_t cbCpp;
+        /** The preprocessor output checksums that will produce the cached object. */
+        KOCSUM SumHead;
+        /** The number of milliseconds spent precompiling. */
+        uint32_t cMsCpp;
+
+        /** The object filename (relative to the cache file). */
+        char *pszObjName;
+        /** The compile argument vector used to build the object. */
+        char **papszArgvCompile;
+        /** The size of the compile  */
+        unsigned cArgvCompile;
+        /** The checksum of the compiler argument vector. */
+        KOCSUM SumCompArgv;
+        /** The number of milliseconds spent compiling. */
+        uint32_t cMsCompile;
+        /** @todo need a list of additional output files for MSC. */
+        /** @todo need compiler output (warnings). */
+
+        /** The target os/arch identifier. */
+        char *pszTarget;
+    }
+    /** The old data.*/
+            Old,
+    /** The new data. */
+            New;
+} KOCENTRY;
+/** Pointer to a KOCENTRY. */
+typedef KOCENTRY *PKOCENTRY;
+/** Pointer to a const KOCENTRY. */
+typedef const KOCENTRY *PCKOCENTRY;
+
+
+/**
+ * Creates a cache entry for the given cache file name.
+ *
+ * @returns Pointer to a cache entry.
+ * @param   pszFilename     The cache file name.
+ */
+static PKOCENTRY kOCEntryCreate(const char *pszFilename)
+{
+    PKOCENTRY pEntry;
+    size_t off;
+
+    /*
+     * Allocate an empty entry.
+     */
+    pEntry = xmallocz(sizeof(*pEntry));
+
+    kOCDepInit(&pEntry->DepState);
+
+    kOCSumInit(&pEntry->New.SumHead);
+    kOCSumInit(&pEntry->Old.SumHead);
+
+    kOCSumInit(&pEntry->New.SumCompArgv);
+    kOCSumInit(&pEntry->Old.SumCompArgv);
+
+    /*
+     * Setup the directory and cache file name.
+     */
+    pEntry->pszAbsPath = AbsPath(pszFilename);
+    pEntry->pszName = FindFilenameInPath(pEntry->pszAbsPath);
+    off = pEntry->pszName - pEntry->pszAbsPath;
+    if (!off)
+        FatalDie("Failed to find abs path for '%s'!\n", pszFilename);
+    pEntry->pszDir = xmalloc(off);
+    memcpy(pEntry->pszDir, pEntry->pszAbsPath, off - 1);
+    pEntry->pszDir[off - 1] = '\0';
+
+    return pEntry;
+}
+
+
+/**
+ * Destroys the cache entry freeing up all it's resources.
+ *
+ * @param   pEntry      The entry to free.
+ */
+static void kOCEntryDestroy(PKOCENTRY pEntry)
+{
+    /** @todo free pEntry->pszName? */
+    free(pEntry->pszDir);
+    free(pEntry->pszAbsPath);
+    free(pEntry->pszNmPipeCompile);
+    free(pEntry->pszMakeDepFilename);
+
+    kOCDepDelete(&pEntry->DepState);
+
+    kOCSumDeleteChain(&pEntry->New.SumHead);
+    kOCSumDeleteChain(&pEntry->Old.SumHead);
+
+    kOCSumDeleteChain(&pEntry->New.SumCompArgv);
+    kOCSumDeleteChain(&pEntry->Old.SumCompArgv);
+
+    free(pEntry->New.pszCppName);
+    free(pEntry->Old.pszCppName);
+
+    free(pEntry->New.pszCppMapping);
+    free(pEntry->Old.pszCppMapping);
+
+    free(pEntry->New.pszObjName);
+    free(pEntry->Old.pszObjName);
+
+    free(pEntry->New.pszTarget);
+    free(pEntry->Old.pszTarget);
+
+    while (pEntry->New.cArgvCompile > 0)
+        free(pEntry->New.papszArgvCompile[--pEntry->New.cArgvCompile]);
+    while (pEntry->Old.cArgvCompile > 0)
+        free(pEntry->Old.papszArgvCompile[--pEntry->Old.cArgvCompile]);
+
+    free(pEntry->New.papszArgvCompile);
+    free(pEntry->Old.papszArgvCompile);
+
+    free(pEntry);
+}
+
+
+/**
+ * Calculates the checksum of an compiler argument vector.
+ *
+ * @param   pEntry          The cache entry.
+ * @param   papszArgv       The argument vector.
+ * @param   cArgc           The number of entries in the vector.
+ * @param   pszIgnorePath1  Path to ignore when encountered at the end of
+ *                          arguments. (Not quite safe for simple file names,
+ *                          but what the heck.)
+ * @param   pszIgnorePath2  Path to ignore when encountered at the end of
+ *                          arguments. (Not quite safe for simple file names,
+ *                          but what the heck.)
+ * @param   pSum            Where to store the check sum.
+ */
+static void kOCEntryCalcArgvSum(PKOCENTRY pEntry, const char * const *papszArgv, unsigned cArgc,
+                                const char *pszIgnorePath1, const char *pszIgnorePath2, PKOCSUM pSum)
+{
+    size_t cchIgnorePath1 = strlen(pszIgnorePath1);
+    size_t cchIgnorePath2 = pszIgnorePath2 ? strlen(pszIgnorePath2) : ~(size_t)0;
+    KOCSUMCTX Ctx;
+    unsigned i;
+
+    kOCSumInitWithCtx(pSum, &Ctx);
+    for (i = 0; i < cArgc; i++)
+    {
+        size_t cch = strlen(papszArgv[i]);
+        if (   (   cch < cchIgnorePath1
+                || !ArePathsIdenticalN(papszArgv[i] + cch - cchIgnorePath1, pszIgnorePath1, cch))
+            && (   cch < cchIgnorePath2
+                || !ArePathsIdenticalN(papszArgv[i] + cch - cchIgnorePath2, pszIgnorePath2, cch)) )
+            kOCSumUpdate(pSum, &Ctx, papszArgv[i], cch + 1);
+    }
+    kOCSumFinalize(pSum, &Ctx);
+
+    (void)pEntry;
+}
+
+
+/**
+ * Reads and parses the cache file.
+ *
+ * @param   pEntry      The entry to read it into.
+ */
+static void kOCEntryRead(PKOCENTRY pEntry)
+{
+    FILE *pFile;
+    pFile = FOpenFileInDir(pEntry->pszName, pEntry->pszDir, "rb");
+    if (pFile)
+    {
+        InfoMsg(4, "reading cache entry...\n");
+
+        /*
+         * Check the magic.
+         */
+        if (    !fgets(g_szLine, sizeof(g_szLine), pFile)
+            ||  (   strcmp(g_szLine, "magic=kObjCacheEntry-v0.1.0\n")
+                 && strcmp(g_szLine, "magic=kObjCacheEntry-v0.1.1\n"))
+           )
+        {
+            InfoMsg(2, "bad cache file (magic)\n");
+            pEntry->fNeedCompiling = 1;
+        }
+        else
+        {
+            /*
+             * Parse the rest of the file (relaxed order).
+             */
+            unsigned i;
+            int fBad = 0;
+            int fBadBeforeMissing = 1;
+            while (fgets(g_szLine, sizeof(g_szLine), pFile))
+            {
+                char *pszNl;
+                char *pszVal;
+
+                /* Split the line and drop the trailing newline. */
+                pszVal = strchr(g_szLine, '=');
+                if ((fBad = pszVal == NULL))
+                    break;
+                *pszVal++ = '\0';
+
+                pszNl = strchr(pszVal, '\n');
+                if (pszNl)
+                    *pszNl = '\0';
+
+                /* string case on variable name */
+                if (!strcmp(g_szLine, "obj"))
+                {
+                    if ((fBad = pEntry->Old.pszObjName != NULL))
+                        break;
+                    pEntry->Old.pszObjName = xstrdup(pszVal);
+                }
+                else if (!strcmp(g_szLine, "cpp"))
+                {
+                    if ((fBad = pEntry->Old.pszCppName != NULL))
+                        break;
+                    pEntry->Old.pszCppName = xstrdup(pszVal);
+                }
+                else if (!strcmp(g_szLine, "cpp-size"))
+                {
+                    char *pszNext;
+                    if ((fBad = pEntry->Old.cbCpp != 0))
+                        break;
+                    pEntry->Old.cbCpp = strtoul(pszVal, &pszNext, 0);
+                    if ((fBad = pszNext && *pszNext))
+                        break;
+                }
+                else if (!strcmp(g_szLine, "cpp-sum"))
+                {
+                    KOCSUM Sum;
+                    if ((fBad = kOCSumInitFromString(&Sum, pszVal)))
+                        break;
+                    kOCSumAdd(&pEntry->Old.SumHead, &Sum);
+                }
+                else if (!strcmp(g_szLine, "cpp-ms"))
+                {
+                    char *pszNext;
+                    if ((fBad = pEntry->Old.cMsCpp != 0))
+                        break;
+                    pEntry->Old.cMsCpp = strtoul(pszVal, &pszNext, 0);
+                    if ((fBad = pszNext && *pszNext))
+                        break;
+                }
+                else if (!strcmp(g_szLine, "cc-argc"))
+                {
+                    if ((fBad = pEntry->Old.papszArgvCompile != NULL))
+                        break;
+                    pEntry->Old.cArgvCompile = atoi(pszVal); /* if wrong, we'll fail below. */
+                    pEntry->Old.papszArgvCompile = xmallocz((pEntry->Old.cArgvCompile + 1) * sizeof(pEntry->Old.papszArgvCompile[0]));
+                }
+                else if (!strncmp(g_szLine, "cc-argv-#", sizeof("cc-argv-#") - 1))
+                {
+                    char *pszNext;
+                    unsigned iArg = strtoul(&g_szLine[sizeof("cc-argv-#") - 1], &pszNext, 0);
+                    if ((fBad = iArg >= pEntry->Old.cArgvCompile || pEntry->Old.papszArgvCompile[iArg] || (pszNext && *pszNext)))
+                        break;
+                    pEntry->Old.papszArgvCompile[iArg] = xstrdup(pszVal);
+                }
+                else if (!strcmp(g_szLine, "cc-argv-sum"))
+                {
+                    if ((fBad = !kOCSumIsEmpty(&pEntry->Old.SumCompArgv)))
+                        break;
+                    if ((fBad = kOCSumInitFromString(&pEntry->Old.SumCompArgv, pszVal)))
+                        break;
+                }
+                else if (!strcmp(g_szLine, "cc-ms"))
+                {
+                    char *pszNext;
+                    if ((fBad = pEntry->Old.cMsCompile != 0))
+                        break;
+                    pEntry->Old.cMsCompile = strtoul(pszVal, &pszNext, 0);
+                    if ((fBad = pszNext && *pszNext))
+                        break;
+                }
+                else if (!strcmp(g_szLine, "target"))
+                {
+                    if ((fBad = pEntry->Old.pszTarget != NULL))
+                        break;
+                    pEntry->Old.pszTarget = xstrdup(pszVal);
+                }
+                else if (!strcmp(g_szLine, "key"))
+                {
+                    char *pszNext;
+                    if ((fBad = pEntry->uKey != 0))
+                        break;
+                    pEntry->uKey = strtoul(pszVal, &pszNext, 0);
+                    if ((fBad = pszNext && *pszNext))
+                        break;
+                }
+                else if (!strcmp(g_szLine, "the-end"))
+                {
+                    fBadBeforeMissing = fBad = strcmp(pszVal, "fine");
+                    break;
+                }
+                else
+                {
+                    fBad = 1;
+                    break;
+                }
+            } /* parse loop */
+
+            /*
+             * Did we find everything and does it add up correctly?
+             */
+            if (!fBad && fBadBeforeMissing)
+            {
+                InfoMsg(2, "bad cache file (no end)\n");
+                fBad = 1;
+            }
+            else
+            {
+                fBadBeforeMissing = fBad;
+                if (    !fBad
+                    &&  (   !pEntry->Old.papszArgvCompile
+                         || !pEntry->Old.pszObjName
+                         || !pEntry->Old.pszCppName
+                         || kOCSumIsEmpty(&pEntry->Old.SumHead)))
+                    fBad = 1;
+                if (!fBad)
+                    for (i = 0; i < pEntry->Old.cArgvCompile; i++)
+                        if ((fBad = !pEntry->Old.papszArgvCompile[i]))
+                            break;
+                if (!fBad)
+                {
+                    KOCSUM Sum;
+                    kOCEntryCalcArgvSum(pEntry, (const char * const *)pEntry->Old.papszArgvCompile,
+                                        pEntry->Old.cArgvCompile, pEntry->Old.pszObjName, pEntry->Old.pszCppName,
+                                        &Sum);
+                    fBad = !kOCSumIsEqual(&pEntry->Old.SumCompArgv, &Sum);
+                }
+                if (fBad)
+                    InfoMsg(2, "bad cache file (%s)\n", fBadBeforeMissing ? g_szLine : "missing stuff");
+                else if (ferror(pFile))
+                {
+                    InfoMsg(2, "cache file read error\n");
+                    fBad = 1;
+                }
+
+                /*
+                 * Verify the existance of the object file.
+                 */
+                if (!fBad)
+                {
+                    struct stat st;
+                    char *pszPath = MakePathFromDirAndFile(pEntry->Old.pszObjName, pEntry->pszDir);
+                    if (stat(pszPath, &st) != 0)
+                    {
+                        InfoMsg(2, "failed to stat object file: %s\n", strerror(errno));
+                        fBad = 1;
+                    }
+                    else
+                    {
+                        /** @todo verify size and the timestamp. */
+                    }
+                }
+            }
+            pEntry->fNeedCompiling = fBad;
+        }
+        fclose(pFile);
+    }
+    else
+    {
+        InfoMsg(2, "no cache file\n");
+        pEntry->fNeedCompiling = 1;
+    }
+}
+
+
+/**
+ * Writes the cache file.
+ *
+ * @param   pEntry      The entry to write.
+ */
+static void kOCEntryWrite(PKOCENTRY pEntry)
+{
+    FILE *pFile;
+    PCKOCSUM pSum;
+    unsigned i;
+
+    InfoMsg(4, "writing cache entry '%s'...\n", pEntry->pszName);
+    pFile = FOpenFileInDir(pEntry->pszName, pEntry->pszDir, "wb");
+    if (!pFile)
+        FatalDie("Failed to open '%s' in '%s': %s\n",
+                 pEntry->pszName, pEntry->pszDir, strerror(errno));
+
+#define CHECK_LEN(expr) \
+        do { int cch = expr; if (cch >= KOBJCACHE_MAX_LINE_LEN) FatalDie("Line too long: %d (max %d)\nexpr: %s\n", cch, KOBJCACHE_MAX_LINE_LEN, #expr); } while (0)
+
+    fprintf(pFile, "magic=kObjCacheEntry-v0.1.1\n");
+    CHECK_LEN(fprintf(pFile, "target=%s\n",     pEntry->New.pszTarget ? pEntry->New.pszTarget : pEntry->Old.pszTarget));
+    CHECK_LEN(fprintf(pFile, "key=%lu\n",       (unsigned long)pEntry->uKey));
+    CHECK_LEN(fprintf(pFile, "obj=%s\n",        pEntry->New.pszObjName ? pEntry->New.pszObjName : pEntry->Old.pszObjName));
+    CHECK_LEN(fprintf(pFile, "cpp=%s\n",        pEntry->New.pszCppName ? pEntry->New.pszCppName : pEntry->Old.pszCppName));
+    CHECK_LEN(fprintf(pFile, "cpp-size=%lu\n",  (unsigned long)(pEntry->New.pszCppName ? pEntry->New.cbCpp      : pEntry->Old.cbCpp)));
+    CHECK_LEN(fprintf(pFile, "cpp-ms=%lu\n",    (unsigned long)(pEntry->New.pszCppName ? pEntry->New.cMsCpp     : pEntry->Old.cMsCpp)));
+    CHECK_LEN(fprintf(pFile, "cc-ms=%lu\n",     (unsigned long)(pEntry->New.pszCppName ? pEntry->New.cMsCompile : pEntry->Old.cMsCompile)));
+
+    if (!kOCSumIsEmpty(&pEntry->New.SumCompArgv))
+    {
+        CHECK_LEN(fprintf(pFile, "cc-argc=%u\n", pEntry->New.cArgvCompile));
+        for (i = 0; i < pEntry->New.cArgvCompile; i++)
+            CHECK_LEN(fprintf(pFile, "cc-argv-#%u=%s\n", i, pEntry->New.papszArgvCompile[i]));
+        fprintf(pFile, "cc-argv-sum=");
+        kOCSumFPrintf(&pEntry->New.SumCompArgv, pFile);
+    }
+    else
+    {
+        CHECK_LEN(fprintf(pFile, "cc-argc=%u\n", pEntry->Old.cArgvCompile));
+        for (i = 0; i < pEntry->Old.cArgvCompile; i++)
+            CHECK_LEN(fprintf(pFile, "cc-argv-#%u=%s\n", i, pEntry->Old.papszArgvCompile[i]));
+        fprintf(pFile, "cc-argv-sum=");
+        kOCSumFPrintf(&pEntry->Old.SumCompArgv, pFile);
+    }
+
+
+    for (pSum = !kOCSumIsEmpty(&pEntry->New.SumHead) ? &pEntry->New.SumHead : &pEntry->Old.SumHead;
+         pSum;
+         pSum = pSum->pNext)
+    {
+        fprintf(pFile, "cpp-sum=");
+        kOCSumFPrintf(pSum, pFile);
+    }
+
+    fprintf(pFile, "the-end=fine\n");
+
+#undef CHECK_LEN
+
+    /*
+     * Flush the file and check for errors.
+     * On failure delete the file so we won't be seeing any invalid
+     * files the next time or upset make with new timestamps.
+     */
+    errno = 0;
+    if (    fflush(pFile) < 0
+        ||  ferror(pFile))
+    {
+        int iErr = errno;
+        fclose(pFile);
+        UnlinkFileInDir(pEntry->pszName, pEntry->pszDir);
+        FatalDie("Stream error occured while writing '%s' in '%s': %s\n",
+                 pEntry->pszName, pEntry->pszDir, strerror(iErr));
+    }
+    fclose(pFile);
+}
+
+
+/**
+ * Checks that the read cache entry is valid.
+ * It sets fNeedCompiling if it isn't.
+ *
+ * @returns 1 valid, 0 invalid.
+ * @param   pEntry      The cache entry.
+ */
+static int kOCEntryCheck(PKOCENTRY pEntry)
+{
+    return !pEntry->fNeedCompiling;
+}
+
+
+/**
+ * Sets the object name and compares it with the old name if present.
+ *
+ * @param   pEntry      The cache entry.
+ * @param   pszObjName  The new object name.
+ */
+static void kOCEntrySetCompileObjName(PKOCENTRY pEntry, const char *pszObjName)
+{
+    assert(!pEntry->New.pszObjName);
+    pEntry->New.pszObjName = CalcRelativeName(pszObjName, pEntry->pszDir);
+
+    if (    !pEntry->fNeedCompiling
+        &&  (   !pEntry->Old.pszObjName
+             || strcmp(pEntry->New.pszObjName, pEntry->Old.pszObjName)))
+    {
+        InfoMsg(2, "object file name differs\n");
+        pEntry->fNeedCompiling = 1;
+    }
+
+    if (    !pEntry->fNeedCompiling
+        &&  !DoesFileInDirExist(pEntry->New.pszObjName, pEntry->pszDir))
+    {
+        InfoMsg(2, "object file doesn't exist\n");
+        pEntry->fNeedCompiling = 1;
+    }
+}
+
+
+/**
+ * Set the new compiler args, calc their checksum, and comparing them with any old ones.
+ *
+ * @param   pEntry              The cache entry.
+ * @param   papszArgvCompile    The new argument vector for compilation.
+ * @param   cArgvCompile        The number of arguments in the vector.
+ *
+ * @remark  Must call kOCEntrySetCompileObjName before this function!
+ */
+static void kOCEntrySetCompileArgv(PKOCENTRY pEntry, const char * const *papszArgvCompile, unsigned cArgvCompile)
+{
+    unsigned i;
+
+    /* call me only once! */
+    assert(!pEntry->New.cArgvCompile);
+    /* call kOCEntrySetCompilerObjName first! */
+    assert(pEntry->New.pszObjName);
+
+    /*
+     * Copy the argument vector and calculate the checksum.
+     */
+    pEntry->New.cArgvCompile = cArgvCompile;
+    pEntry->New.papszArgvCompile = xmalloc((cArgvCompile + 1) * sizeof(pEntry->New.papszArgvCompile[0]));
+    for (i = 0; i < cArgvCompile; i++)
+        pEntry->New.papszArgvCompile[i] = xstrdup(papszArgvCompile[i]);
+    pEntry->New.papszArgvCompile[i] = NULL; /* for exev/spawnv */
+
+    kOCEntryCalcArgvSum(pEntry, papszArgvCompile, cArgvCompile, pEntry->New.pszObjName, pEntry->New.pszCppName,
+                        &pEntry->New.SumCompArgv);
+    kOCSumInfo(&pEntry->New.SumCompArgv, 4, "comp-argv");
+
+    /*
+     * Compare with the old argument vector.
+     */
+    if (    !pEntry->fNeedCompiling
+        &&  !kOCSumIsEqual(&pEntry->New.SumCompArgv, &pEntry->Old.SumCompArgv))
+    {
+        InfoMsg(2, "compiler args differs\n");
+        pEntry->fNeedCompiling = 1;
+    }
+}
+
+
+/**
+ * Sets the arch/os target and compares it with the old name if present.
+ *
+ * @param   pEntry      The cache entry.
+ * @param   pszObjName  The new object name.
+ */
+static void kOCEntrySetTarget(PKOCENTRY pEntry, const char *pszTarget)
+{
+    assert(!pEntry->New.pszTarget);
+    pEntry->New.pszTarget = xstrdup(pszTarget);
+
+    if (    !pEntry->fNeedCompiling
+        &&  (   !pEntry->Old.pszTarget
+             || strcmp(pEntry->New.pszTarget, pEntry->Old.pszTarget)))
+    {
+        InfoMsg(2, "target differs\n");
+        pEntry->fNeedCompiling = 1;
+    }
+}
+
+
+/**
+ * Sets the preprocessor output filename. We don't generally care if this
+ * matches the old name or not.
+ *
+ * @param   pEntry      The cache entry.
+ * @param   pszCppName  The preprocessor output filename.
+ */
+static void kOCEntrySetCppName(PKOCENTRY pEntry, const char *pszCppName)
+{
+    assert(!pEntry->New.pszCppName);
+    pEntry->New.pszCppName = CalcRelativeName(pszCppName, pEntry->pszDir);
+}
+
+
+/**
+ * Sets the piped mode of the preprocessor and compiler.
+ *
+ * @param   pEntry                  The cache entry.
+ * @param   fRedirPreCompStdOut     Whether the preprocessor is in piped mode.
+ * @param   fRedirCompileStdIn      Whether the compiler is in piped mode.
+ * @param   pszNmPipeCompile        The name of the named pipe to use to feed
+ *                                  the microsoft compiler.
+ */
+static void kOCEntrySetPipedMode(PKOCENTRY pEntry, int fRedirPreCompStdOut, int fRedirCompileStdIn,
+                                 const char *pszNmPipeCompile)
+{
+    pEntry->fPipedPreComp = fRedirPreCompStdOut;
+    pEntry->fPipedCompile = fRedirCompileStdIn || pszNmPipeCompile;
+    pEntry->pszNmPipeCompile = xstrdup(pszNmPipeCompile);
+}
+
+
+/**
+ * Sets the dependency file.
+ *
+ * @param   pEntry                  The cache entry.
+ * @param   pszMakeDepFilename      The dependency filename.
+ * @param   fMakeDepFixCase         Whether to fix the case of dependency files.
+ * @param   fMakeDepQuiet           Whether to be quiet about the dependencies.
+ * @param   fMakeDepGenStubs        Whether to generate stubs.
+ */
+static void kOCEntrySetDepFilename(PKOCENTRY pEntry, const char *pszMakeDepFilename,
+                                   int fMakeDepFixCase, int fMakeDepQuiet, int fMakeDepGenStubs)
+{
+    pEntry->pszMakeDepFilename = xstrdup(pszMakeDepFilename);
+    pEntry->fMakeDepFixCase = fMakeDepFixCase;
+    pEntry->fMakeDepQuiet = fMakeDepQuiet;
+    pEntry->fMakeDepGenStubs = fMakeDepGenStubs;
+}
+
+
+/**
+ * Configures the preprocessor output optimizations.
+ *
+ * @param   pEntry                  The cache entry.
+ * @param   fOptimizeCpp            The one and only flag, so far.
+ */
+static void kOCEntrySetOptimizations(PKOCENTRY pEntry, int fOptimizeCpp)
+{
+    pEntry->fOptimizeCpp = fOptimizeCpp;
+}
+
+
+/**
+ * Spawns a child in a synchronous fashion.
+ * Terminating on failure.
+ *
+ * @param   papszArgv       Argument vector. The cArgv element is NULL.
+ * @param   pcMs            The cache entry member use for time keeping.  This
+ *                          will be set to the current timestamp.
+ * @param   cArgv           The number of arguments in the vector.
+ * @param   pszMsg          Which operation this is, for use in messages.
+ * @param   pszStdOut       Where to redirect standard out.
+ */
+static void kOCEntrySpawn(PCKOCENTRY pEntry, uint32_t *pcMs, const char * const *papszArgv, unsigned cArgv,
+                          const char *pszMsg, const char *pszStdOut)
+{
+#if defined(__OS2__) || defined(__WIN__)
+    intptr_t rc;
+    int fdStdOut = -1;
+    if (pszStdOut)
+    {
+        int fdReDir;
+        fdStdOut = dup(STDOUT_FILENO);
+        close(STDOUT_FILENO);
+        fdReDir = open(pszStdOut, O_CREAT | O_TRUNC | O_WRONLY, 0666);
+        if (fdReDir < 0)
+            FatalDie("%s - failed to create stdout redirection file '%s': %s\n",
+                     pszMsg, pszStdOut, strerror(errno));
+
+        if (fdReDir != STDOUT_FILENO)
+        {
+            if (dup2(fdReDir, STDOUT_FILENO) < 0)
+                FatalDie("%s - dup2 failed: %s\n", pszMsg, strerror(errno));
+            close(fdReDir);
+        }
+    }
+
+    *pcMs = NowMs();
+    errno = 0;
+# ifdef __WIN__
+    rc = quoted_spawnvp(_P_WAIT, papszArgv[0], papszArgv);
+# else
+    rc = _spawnvp(_P_WAIT, papszArgv[0], papszArgv);
+# endif
+    *pcMs = NowMs() - *pcMs;
+    if (rc < 0)
+        FatalDie("%s - _spawnvp failed (rc=0x%p): %s\n", pszMsg, rc, strerror(errno));
+    if (rc > 0)
+        FatalDie("%s - failed rc=%d\n", pszMsg, (int)rc);
+    if (fdStdOut != -1)
+    {
+        close(STDOUT_FILENO);
+        fdStdOut = dup2(fdStdOut, STDOUT_FILENO);
+        close(fdStdOut);
+    }
+
+#else
+    int iStatus;
+    pid_t pidWait;
+    pid_t pid;
+
+    *pcMs = NowMs();
+    pid = fork();
+    if (!pid)
+    {
+        if (pszStdOut)
+        {
+            int fdReDir;
+
+            close(STDOUT_FILENO);
+            fdReDir = open(pszStdOut, O_CREAT | O_TRUNC | O_WRONLY, 0666);
+            if (fdReDir < 0)
+                FatalDie("%s - failed to create stdout redirection file '%s': %s\n",
+                         pszMsg, pszStdOut, strerror(errno));
+            if (fdReDir != STDOUT_FILENO)
+            {
+                if (dup2(fdReDir, STDOUT_FILENO) < 0)
+                    FatalDie("%s - dup2 failed: %s\n", pszMsg, strerror(errno));
+                close(fdReDir);
+            }
+        }
+
+        execvp(papszArgv[0], (char **)papszArgv);
+        FatalDie("%s - execvp failed: %s\n",
+                 pszMsg, strerror(errno));
+    }
+    if (pid == -1)
+        FatalDie("%s - fork() failed: %s\n", pszMsg, strerror(errno));
+
+    pidWait = waitpid(pid, &iStatus, 0);
+    while (pidWait < 0 && errno == EINTR)
+        pidWait = waitpid(pid, &iStatus, 0);
+    *pcMs = NowMs() - *pcMs;
+    if (pidWait != pid)
+        FatalDie("%s - waitpid failed rc=%d: %s\n",
+                 pszMsg, pidWait, strerror(errno));
+    if (!WIFEXITED(iStatus))
+        FatalDie("%s - abended (iStatus=%#x)\n", pszMsg, iStatus);
+    if (WEXITSTATUS(iStatus))
+        FatalDie("%s - failed with rc %d\n", pszMsg, WEXITSTATUS(iStatus));
+#endif
+
+     (void)pEntry; (void)cArgv;
+}
+
+
+/**
+ * Spawns child with optional redirection of stdin and stdout.
+ *
+ * @param   pEntry          The cache entry.
+ * @param   pcMs            The cache entry member use for time keeping.  This
+ *                          will be set to the current timestamp.
+ * @param   papszArgv       Argument vector. The cArgv element is NULL.
+ * @param   cArgv           The number of arguments in the vector.
+ * @param   fdStdIn         Child stdin, -1 if it should inherit our stdin. Will be closed.
+ * @param   fdStdOut        Child stdout, -1 if it should inherit our stdout. Will be closed.
+ * @param   pszMsg          Message to start the info/error messages with.
+ */
+static pid_t kOCEntrySpawnChild(PCKOCENTRY pEntry, uint32_t *pcMs, const char * const *papszArgv, unsigned cArgv,
+                                int fdStdIn, int fdStdOut, const char *pszMsg)
+{
+    pid_t pid;
+    int fdSavedStdOut = -1;
+    int fdSavedStdIn = -1;
+
+    /*
+     * Setup redirection.
+     */
+    if (fdStdOut != -1 && fdStdOut != STDOUT_FILENO)
+    {
+        fdSavedStdOut = dup(STDOUT_FILENO);
+        if (dup2(fdStdOut, STDOUT_FILENO) < 0)
+            FatalDie("%s - dup2(,1) failed: %s\n", pszMsg, strerror(errno));
+        close(fdStdOut);
+#ifndef __WIN__
+        fcntl(fdSavedStdOut, F_SETFD, FD_CLOEXEC);
+#endif
+    }
+    if (fdStdIn != -1 && fdStdIn != STDIN_FILENO)
+    {
+        fdSavedStdIn = dup(STDIN_FILENO);
+        if (dup2(fdStdIn, STDIN_FILENO) < 0)
+            FatalDie("%s - dup2(,0) failed: %s\n", pszMsg, strerror(errno));
+        close(fdStdIn);
+#ifndef __WIN__
+        fcntl(fdSavedStdIn, F_SETFD, FD_CLOEXEC);
+#endif
+    }
+
+    /*
+     * Create the child process.
+     */
+    *pcMs = NowMs();
+#if defined(__OS2__) || defined(__WIN__)
+    errno = 0;
+# ifdef __WIN__
+    pid = quoted_spawnvp(_P_NOWAIT, papszArgv[0], papszArgv);
+# else
+    pid = _spawnvp(_P_NOWAIT, papszArgv[0], papszArgv);
+# endif
+    if (pid == -1)
+        FatalDie("preprocess - _spawnvp failed: %s\n", strerror(errno));
+
+#else
+    pid = fork();
+    if (!pid)
+    {
+        execvp(papszArgv[0], (char **)papszArgv);
+        FatalDie("preprocess - execvp failed: %s\n", strerror(errno));
+    }
+    if (pid == -1)
+        FatalDie("preprocess - fork() failed: %s\n", strerror(errno));
+#endif
+
+    /*
+     * Restore stdout & stdin.
+     */
+    if (fdSavedStdIn != -1)
+    {
+        close(STDIN_FILENO);
+        dup2(fdStdOut, STDIN_FILENO);
+        close(fdSavedStdIn);
+    }
+    if (fdSavedStdOut != -1)
+    {
+        close(STDOUT_FILENO);
+        dup2(fdSavedStdOut, STDOUT_FILENO);
+        close(fdSavedStdOut);
+    }
+
+    InfoMsg(3, "%s - spawned %ld\n", pszMsg, (long)pid);
+    (void)cArgv;
+    (void)pEntry;
+    return pid;
+}
+
+
+/**
+ * Waits for a child and exits fatally if the child failed in any way.
+ *
+ * @param   pEntry      The cache entry.
+ * @param   pcMs        The millisecond timestamp that should be convert to
+ *                      elapsed time.
+ * @param   pid         The child to wait for.
+ * @param   pszMsg      Message to start the info/error messages with.
+ */
+static void kOCEntryWaitChild(PCKOCENTRY pEntry, uint32_t *pcMs, pid_t pid, const char *pszMsg)
+{
+    int iStatus = -1;
+    pid_t pidWait;
+    InfoMsg(3, "%s - wait-child %ld\n", pszMsg, (long)pid);
+
+#ifdef __WIN__
+    pidWait = _cwait(&iStatus, pid, _WAIT_CHILD);
+    *pcMs = NowMs() - *pcMs;
+    if (pidWait == -1)
+        FatalDie("%s - waitpid failed: %s\n", pszMsg, strerror(errno));
+    if (iStatus)
+        FatalDie("%s - failed with rc %d\n", pszMsg, iStatus);
+#else
+    pidWait = waitpid(pid, &iStatus, 0);
+    while (pidWait < 0 && errno == EINTR)
+        pidWait = waitpid(pid, &iStatus, 0);
+    *pcMs = NowMs() - *pcMs;
+    if (pidWait != pid)
+        FatalDie("%s - waitpid failed rc=%d: %s\n", pidWait, strerror(errno));
+    if (!WIFEXITED(iStatus))
+        FatalDie("%s - abended (iStatus=%#x)\n", pszMsg, iStatus);
+    if (WEXITSTATUS(iStatus))
+        FatalDie("%s - failed with rc %d\n", pszMsg, WEXITSTATUS(iStatus));
+#endif
+    (void)pEntry;
+}
+
+
+/**
+ * Creates a pipe for setting up redirected stdin/stdout.
+ *
+ * @param   pEntry          The cache entry.
+ * @param   paFDs           Where to store the two file descriptors.
+ * @param   pszMsg          The operation message for info/error messages.
+ * @param   pszPipeName     The pipe name if it is supposed to be named. (Windows only.)
+ * @param   fText           Whether to read text mode or binary mode.
+ */
+static void kOCEntryCreatePipe(PKOCENTRY pEntry, int *paFDs, const char *pszPipeName, const char *pszMsg, int fText)
+{
+    paFDs[0] = paFDs[1] = -1;
+#if defined(__WIN__)
+    if (pszPipeName)
+    {
+        HANDLE hPipe = CreateNamedPipeA(pszPipeName,
+                                       /*PIPE_ACCESS_OUTBOUND*/ PIPE_ACCESS_DUPLEX,
+                                       PIPE_READMODE_BYTE | PIPE_WAIT,
+                                       10 /* nMaxInstances */,
+                                       0x10000 /* nOutBuffer */,
+                                       0x10000 /* nInBuffer */,
+                                       NMPWAIT_WAIT_FOREVER,
+                                       NULL /* pSecurityAttributes */);
+
+        if (hPipe == INVALID_HANDLE_VALUE)
+            FatalDie("%s - CreateNamedPipe(%s) failed: %d\n", pszMsg, pszPipeName, GetLastError());
+
+        paFDs[1 /* write */] = _open_osfhandle((intptr_t)hPipe, _O_WRONLY | _O_TEXT | _O_NOINHERIT);
+        if (paFDs[1 /* write */] == -1)
+            FatalDie("%s - _open_osfhandle failed: %d\n", pszMsg, strerror(errno));
+    }
+    else if (   _pipe(paFDs, 256*1024, _O_NOINHERIT | (fText ? _O_TEXT : _O_BINARY)) < 0
+             && _pipe(paFDs,        0, _O_NOINHERIT | (fText ? _O_TEXT : _O_BINARY)) < 0)
+#else
+    if (pipe(paFDs) < 0)
+#endif
+        FatalDie("%s - pipe failed: %s\n", pszMsg, strerror(errno));
+#if !defined(__WIN__)
+    fcntl(paFDs[0], F_SETFD, FD_CLOEXEC);
+    fcntl(paFDs[1], F_SETFD, FD_CLOEXEC);
+#endif
+
+    (void)pEntry;
+}
+
+
+/**
+ * Spawns a child that produces output to stdout.
+ *
+ * @param   papszArgv       Argument vector. The cArgv element is NULL.
+ * @param   cArgv           The number of arguments in the vector.
+ * @param   pszMsg          The operation message for info/error messages.
+ * @param   pfnConsumer     Pointer to a consumer callback function that is responsible
+ *                          for servicing the child output and closing the pipe.
+ */
+static void kOCEntrySpawnProducer(PKOCENTRY pEntry, const char * const *papszArgv, unsigned cArgv, const char *pszMsg,
+                                  void (*pfnConsumer)(PKOCENTRY, int))
+{
+    int fds[2];
+    pid_t pid;
+
+    kOCEntryCreatePipe(pEntry, fds, NULL, pszMsg, pEntry->fOptimizeCpp);
+    pid = kOCEntrySpawnChild(pEntry, &pEntry->New.cMsCpp, papszArgv, cArgv, -1, fds[1 /* write */], pszMsg);
+
+    pfnConsumer(pEntry, fds[0 /* read */]);
+
+    kOCEntryWaitChild(pEntry, &pEntry->New.cMsCpp, pid, pszMsg);
+}
+
+
+/**
+ * Spawns a child that consumes input on stdin or via a named pipe.
+ *
+ * @param   papszArgv       Argument vector. The cArgv element is NULL.
+ * @param   cArgv           The number of arguments in the vector.
+ * @param   pszMsg          The operation message for info/error messages.
+ * @param   pfnProducer     Pointer to a producer callback function that is responsible
+ *                          for serving the child input and closing the pipe.
+ */
+static void kOCEntrySpawnConsumer(PKOCENTRY pEntry, const char * const *papszArgv, unsigned cArgv, const char *pszMsg,
+                                  void (*pfnProducer)(PKOCENTRY, int))
+{
+    int fds[2];
+    pid_t pid;
+
+    kOCEntryCreatePipe(pEntry, fds, pEntry->pszNmPipeCompile, pszMsg, 0 /*fText*/);
+    pid = kOCEntrySpawnChild(pEntry, &pEntry->New.cMsCompile, papszArgv, cArgv, fds[0 /* read */], -1, pszMsg);
+#ifdef __WIN__
+    if (pEntry->pszNmPipeCompile && !ConnectNamedPipe((HANDLE)_get_osfhandle(fds[1 /* write */]), NULL))
+        FatalDie("compile - ConnectNamedPipe failed: %d\n", GetLastError());
+#endif
+
+    pfnProducer(pEntry, fds[1 /* write */]);
+
+    kOCEntryWaitChild(pEntry, &pEntry->New.cMsCompile, pid, pszMsg);
+}
+
+
+/**
+ * Spawns two child processes, one producing output and one consuming.
+ * Terminating on failure.
+ *
+ * @param   papszArgv       Argument vector. The cArgv element is NULL.
+ * @param   cArgv           The number of arguments in the vector.
+ * @param   pszMsg          The operation message for info/error messages.
+ * @param   pfnConsumer     Pointer to a consumer callback function that is responsible
+ *                          for servicing the child output and closing the pipe.
+ */
+static void kOCEntrySpawnTee(PKOCENTRY pEntry, const char * const *papszProdArgv, unsigned cProdArgv,
+                             const char * const *papszConsArgv, unsigned cConsArgv,
+                             const char *pszMsg, void (*pfnTeeConsumer)(PKOCENTRY, int, int))
+{
+    int fds[2];
+    int fdIn, fdOut;
+    pid_t pidProducer, pidConsumer;
+
+    /*
+     * The producer.
+     */
+    kOCEntryCreatePipe(pEntry, fds, NULL, pszMsg, pEntry->fOptimizeCpp);
+    pidConsumer = kOCEntrySpawnChild(pEntry, &pEntry->New.cMsCpp, papszProdArgv, cProdArgv, -1, fds[1 /* write */], pszMsg);
+    fdIn = fds[0 /* read */];
+
+    /*
+     * The consumer.
+     */
+    kOCEntryCreatePipe(pEntry, fds, pEntry->pszNmPipeCompile, pszMsg, 0 /*fText*/);
+    pidProducer = kOCEntrySpawnChild(pEntry, &pEntry->New.cMsCompile, papszConsArgv, cConsArgv, fds[0 /* read */], -1, pszMsg);
+    fdOut = fds[1 /* write */];
+
+    /*
+     * Hand it on to the tee consumer.
+     */
+    pfnTeeConsumer(pEntry, fdIn, fdOut);
+
+    /*
+     * Reap the children.
+     */
+    kOCEntryWaitChild(pEntry, &pEntry->New.cMsCpp, pidProducer, pszMsg);
+    kOCEntryWaitChild(pEntry, &pEntry->New.cMsCompile, pidConsumer, pszMsg);
+}
+
+
+/**
+ * Reads the output from the preprocessor.
+ *
+ * @param   pEntry      The cache entry. New.cbCpp and New.pszCppMapping will be updated.
+ * @param   pWhich      Specifies what to read (old/new).
+ * @param   fNonFatal   Whether failure is fatal or not.
+ */
+static int kOCEntryReadCppOutput(PKOCENTRY pEntry, struct KOCENTRYDATA *pWhich, int fNonFatal)
+{
+    pWhich->pszCppMapping = ReadFileInDir(pWhich->pszCppName, pEntry->pszDir, &pWhich->cbCpp);
+    if (!pWhich->pszCppMapping)
+    {
+        if (!fNonFatal)
+            FatalDie("failed to open/read '%s' in '%s': %s\n",
+                     pWhich->pszCppName, pEntry->pszDir, strerror(errno));
+        InfoMsg(2, "failed to open/read '%s' in '%s': %s\n",
+                pWhich->pszCppName, pEntry->pszDir, strerror(errno));
+        return -1;
+    }
+
+    InfoMsg(3, "preprocessed file is %lu bytes long\n", (unsigned long)pWhich->cbCpp);
+    return 0;
+}
+
+
+/**
+ * Worker for kOCEntryPreProcess and calculates the checksum of
+ * the preprocessor output.
+ *
+ * @param   pEntry      The cache entry. NewSum will be updated.
+ */
+static void kOCEntryCalcChecksum(PKOCENTRY pEntry)
+{
+    KOCSUMCTX Ctx;
+    kOCSumInitWithCtx(&pEntry->New.SumHead, &Ctx);
+    kOCSumUpdate(&pEntry->New.SumHead, &Ctx, pEntry->New.pszCppMapping, pEntry->New.cbCpp);
+    kOCSumFinalize(&pEntry->New.SumHead, &Ctx);
+    kOCSumInfo(&pEntry->New.SumHead, 4, "cpp (file)");
+}
+
+
+/**
+ * This consumes the preprocessor output and checksums it.
+ *
+ * @param   pEntry  The cache entry.
+ * @param   fdIn    The preprocessor output pipe.
+ * @param   fdOut   The compiler input pipe, -1 if no compiler.
+ */
+static void kOCEntryPreProcessConsumer(PKOCENTRY pEntry, int fdIn)
+{
+    KOCSUMCTX Ctx;
+    KOCCPPRD CppRd;
+
+    kOCSumInitWithCtx(&pEntry->New.SumHead, &Ctx);
+    kOCCppRdInit(&CppRd, pEntry->Old.cbCpp, pEntry->fOptimizeCpp,
+                 pEntry->pszMakeDepFilename ? &pEntry->DepState : NULL);
+
+    for (;;)
+    {
+        /*
+         * Read data from the pipe.
+         */
+        const char *psz;
+        long cbRead = kOCCppRdRead(&CppRd, fdIn, &psz);
+        if (!cbRead)
+            break;
+
+        /*
+         * Process the data.
+         */
+        kOCSumUpdate(&pEntry->New.SumHead, &Ctx, psz, cbRead);
+        if (pEntry->pszMakeDepFilename && !pEntry->fOptimizeCpp)
+            kOCDepConsumer(&pEntry->DepState, psz, cbRead);
+    }
+
+    close(fdIn);
+    kOCCppRdGrabOutput(&CppRd, &pEntry->New.pszCppMapping, &pEntry->New.cbCpp);
+    kOCCppRdDelete(&CppRd);
+    kOCSumFinalize(&pEntry->New.SumHead, &Ctx);
+    kOCSumInfo(&pEntry->New.SumHead, 4, "cpp (pipe)");
+}
+
+
+
+
+/**
+ * Run the preprocessor and calculate the checksum of the output.
+ *
+ * @param   pEntry              The cache entry.
+ * @param   papszArgvPreComp    The argument vector for executing preprocessor.
+ *                              The cArgvPreComp'th argument must be NULL.
+ * @param   cArgvPreComp        The number of arguments.
+ */
+static void kOCEntryPreProcess(PKOCENTRY pEntry, const char * const *papszArgvPreComp, unsigned cArgvPreComp)
+{
+    /*
+     * If we're executing the preprocessor in piped mode, it's relatively simple.
+     */
+    if (pEntry->fPipedPreComp)
+        kOCEntrySpawnProducer(pEntry, papszArgvPreComp, cArgvPreComp, "preprocess",
+                              kOCEntryPreProcessConsumer);
+    else
+    {
+        /*
+         * Rename the old preprocessed output to '-old' so the preprocessor won't
+         * overwrite it when we execute it.
+         */
+        if (    pEntry->Old.pszCppName
+            &&  DoesFileInDirExist(pEntry->Old.pszCppName, pEntry->pszDir))
+        {
+            size_t cch = strlen(pEntry->Old.pszCppName);
+            char *psz = xmalloc(cch + sizeof("-old"));
+            memcpy(psz, pEntry->Old.pszCppName, cch);
+            memcpy(psz + cch, "-old", sizeof("-old"));
+
+            InfoMsg(3, "renaming '%s' to '%s' in '%s'\n", pEntry->Old.pszCppName, psz, pEntry->pszDir);
+            UnlinkFileInDir(psz, pEntry->pszDir);
+            if (RenameFileInDir(pEntry->Old.pszCppName, psz, pEntry->pszDir))
+                FatalDie("failed to rename '%s' -> '%s' in '%s': %s\n",
+                         pEntry->Old.pszCppName, psz, pEntry->pszDir, strerror(errno));
+            free(pEntry->Old.pszCppName);
+            pEntry->Old.pszCppName = psz;
+        }
+
+        /*
+         * Preprocess it and calculate the checksum on the output.
+         */
+        InfoMsg(3, "precompiling -> '%s'...\n", pEntry->New.pszCppName);
+        kOCEntrySpawn(pEntry, &pEntry->New.cMsCpp, papszArgvPreComp, cArgvPreComp, "preprocess", NULL);
+        kOCEntryReadCppOutput(pEntry, &pEntry->New, 0 /* fatal */);
+        kOCEntryCalcChecksum(pEntry);
+        if (pEntry->pszMakeDepFilename)
+            kOCDepConsumer(&pEntry->DepState, pEntry->New.pszCppMapping, pEntry->New.cbCpp);
+    }
+
+    if (pEntry->pszMakeDepFilename)
+        kOCDepWriteToFile(&pEntry->DepState, pEntry->pszMakeDepFilename, pEntry->New.pszObjName, pEntry->pszDir,
+                          pEntry->fMakeDepFixCase, pEntry->fMakeDepQuiet, pEntry->fMakeDepGenStubs);
+}
+
+
+/**
+ * Worker function for kOCEntryTeeConsumer and kOCEntryCompileIt that
+ * writes the preprocessor output to disk.
+ *
+ * @param   pEntry      The cache entry.
+ * @param   fFreeIt     Whether we can free it after writing it or not.
+ */
+static void kOCEntryWriteCppOutput(PKOCENTRY pEntry, int fFreeIt)
+{
+    /*
+     * Remove old files.
+     */
+    if (pEntry->Old.pszCppName)
+        UnlinkFileInDir(pEntry->Old.pszCppName, pEntry->pszDir);
+    if (pEntry->New.pszCppName)
+        UnlinkFileInDir(pEntry->New.pszCppName, pEntry->pszDir);
+
+    /*
+     * Write it to disk if we've got a file name.
+     */
+    if (pEntry->New.pszCppName)
+    {
+        long cbLeft;
+        char *psz;
+        int fd = OpenFileInDir(pEntry->New.pszCppName, pEntry->pszDir,
+                               O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666);
+        if (fd == -1)
+            FatalDie("Failed to create '%s' in '%s': %s\n",
+                     pEntry->New.pszCppName, pEntry->pszDir, strerror(errno));
+        psz = pEntry->New.pszCppMapping;
+        cbLeft = (long)pEntry->New.cbCpp;
+        while (cbLeft > 0)
+        {
+            long cbWritten = write(fd, psz, cbLeft);
+            if (cbWritten < 0)
+            {
+                int iErr = errno;
+                if (iErr == EINTR)
+                    continue;
+                close(fd);
+                UnlinkFileInDir(pEntry->New.pszCppName, pEntry->pszDir);
+                FatalDie("error writing '%s' in '%s': %s\n",
+                         pEntry->New.pszCppName, pEntry->pszDir, strerror(iErr));
+            }
+
+            psz += cbWritten;
+            cbLeft -= cbWritten;
+        }
+        close(fd);
+    }
+
+    /*
+     * Free it.
+     */
+    if (fFreeIt)
+    {
+        free(pEntry->New.pszCppMapping);
+        pEntry->New.pszCppMapping = NULL;
+    }
+}
+
+
+/**
+ * kOCEntrySpawnConsumer callback that passes the preprocessor output to the
+ * compiler and writes it to the disk (latter only when necesary).
+ *
+ * @param   pEntry      The cache entry.
+ * @param   fdOut       The pipe handle connected to the childs stdin.
+ */
+static void kOCEntryCompileProducer(PKOCENTRY pEntry, int fdOut)
+{
+    const char *psz = pEntry->New.pszCppMapping;
+    long cbLeft = (long)pEntry->New.cbCpp;
+    while (cbLeft > 0)
+    {
+        long cbWritten = write(fdOut, psz, cbLeft);
+        if (cbWritten < 0)
+        {
+            if (errno == EINTR)
+                continue;
+#ifdef __WIN__ /* HACK */
+            if (   errno == EINVAL
+                && pEntry->pszNmPipeCompile
+                && DisconnectNamedPipe((HANDLE)_get_osfhandle(fdOut))
+                && ConnectNamedPipe((HANDLE)_get_osfhandle(fdOut), NULL))
+            {
+                psz = pEntry->New.pszCppMapping;
+                cbLeft = (long)pEntry->New.cbCpp;
+            }
+            FatalDie("compile - write(%d,,%ld) failed: %s - _doserrno=%d\n", fdOut, cbLeft, strerror(errno), _doserrno);
+#else
+            FatalDie("compile - write(%d,,%ld) failed: %s\n", fdOut, cbLeft, strerror(errno));
+#endif
+        }
+        psz += cbWritten;
+        cbLeft -= cbWritten;
+    }
+    close(fdOut);
+
+    if (pEntry->fPipedPreComp)
+        kOCEntryWriteCppOutput(pEntry, 1 /* free it */);
+}
+
+
+/**
+ * Does the actual compiling.
+ *
+ * @param   pEntry      The cache entry.
+ */
+static void kOCEntryCompileIt(PKOCENTRY pEntry)
+{
+    /*
+     * Delete the object files and free old cpp output that's no longer needed.
+     */
+    if (pEntry->Old.pszObjName)
+        UnlinkFileInDir(pEntry->Old.pszObjName, pEntry->pszDir);
+    UnlinkFileInDir(pEntry->New.pszObjName, pEntry->pszDir);
+
+    free(pEntry->Old.pszCppMapping);
+    pEntry->Old.pszCppMapping = NULL;
+    if (!pEntry->fPipedPreComp && !pEntry->fPipedCompile)
+    {
+        free(pEntry->New.pszCppMapping);
+        pEntry->New.pszCppMapping = NULL;
+    }
+
+    /*
+     * Do the (re-)compile job.
+     */
+    if (pEntry->fPipedCompile)
+    {
+        if (    !pEntry->fPipedPreComp
+            &&  !pEntry->New.pszCppMapping)
+            kOCEntryReadCppOutput(pEntry, &pEntry->New, 0 /* fatal */);
+        InfoMsg(3, "compiling -> '%s'...\n", pEntry->New.pszObjName);
+        kOCEntrySpawnConsumer(pEntry, (const char * const *)pEntry->New.papszArgvCompile,
+                              pEntry->New.cArgvCompile, "compile", kOCEntryCompileProducer);
+    }
+    else
+    {
+        if (pEntry->fPipedPreComp)
+            kOCEntryWriteCppOutput(pEntry, 1 /* free it */);
+        InfoMsg(3, "compiling -> '%s'...\n", pEntry->New.pszObjName);
+        kOCEntrySpawn(pEntry, &pEntry->New.cMsCompile, (const char * const *)pEntry->New.papszArgvCompile,
+                      pEntry->New.cArgvCompile, "compile", NULL);
+    }
+}
+
+
+/**
+ * kOCEntrySpawnTee callback that works sort of like 'tee'.
+ *
+ * It will calculate the preprocessed output checksum and
+ * write it to disk while the compiler is busy compiling it.
+ *
+ * @param   pEntry  The cache entry.
+ * @param   fdIn    The input handle (connected to the preprocessor).
+ * @param   fdOut   The output handle (connected to the compiler).
+ */
+static void kOCEntryTeeConsumer(PKOCENTRY pEntry, int fdIn, int fdOut)
+{
+#ifdef __WIN__
+    unsigned fConnectedToCompiler = fdOut == -1 || pEntry->pszNmPipeCompile == NULL;
+#endif
+    KOCSUMCTX Ctx;
+    KOCCPPRD  CppRd;
+
+    kOCSumInitWithCtx(&pEntry->New.SumHead, &Ctx);
+    kOCCppRdInit(&CppRd, pEntry->Old.cbCpp, pEntry->fOptimizeCpp,
+                 pEntry->pszMakeDepFilename ? &pEntry->DepState : NULL);
+    InfoMsg(3, "preprocessor|compile - starting passhtru...\n");
+    for (;;)
+    {
+        /*
+         * Read data from the pipe.
+         */
+        const char *psz;
+        long cbRead = kOCCppRdRead(&CppRd, fdIn, &psz);
+        if (!cbRead)
+            break;
+        InfoMsg(3, "preprocessor|compile - read %d\n", cbRead);
+
+        /*
+         * Process the data.
+         */
+        kOCSumUpdate(&pEntry->New.SumHead, &Ctx, psz, cbRead);
+        if (pEntry->pszMakeDepFilename && !pEntry->fOptimizeCpp)
+            kOCDepConsumer(&pEntry->DepState, psz, cbRead);
+
+#ifdef __WIN__
+        if (   !fConnectedToCompiler
+            && !(fConnectedToCompiler = ConnectNamedPipe((HANDLE)_get_osfhandle(fdOut), NULL)))
+            FatalDie("preprocess|compile - ConnectNamedPipe failed: %d\n", GetLastError());
+#endif
+        do
+        {
+            long cbWritten = write(fdOut, psz, cbRead);
+            if (cbWritten < 0)
+            {
+                if (errno == EINTR)
+                    continue;
+                FatalDie("preprocess|compile - write(%d,,%ld) failed: %s\n", fdOut, cbRead, strerror(errno));
+            }
+            psz += cbWritten;
+            cbRead -= cbWritten;
+        } while (cbRead > 0);
+
+    }
+    InfoMsg(3, "preprocessor|compile - done passhtru\n");
+
+    close(fdIn);
+    close(fdOut);
+    kOCCppRdGrabOutput(&CppRd, &pEntry->New.pszCppMapping, &pEntry->New.cbCpp);
+    kOCCppRdDelete(&CppRd);
+    kOCSumFinalize(&pEntry->New.SumHead, &Ctx);
+    kOCSumInfo(&pEntry->New.SumHead, 4, "cpp (tee)");
+
+    /*
+     * Write the preprocessor output to disk and free the memory it
+     * occupies while the compiler is busy compiling.
+     */
+    kOCEntryWriteCppOutput(pEntry, 1 /* free it */);
+}
+
+
+/**
+ * Performs pre-compile and compile in one go (typical clean build scenario).
+ *
+ * @param   pEntry              The cache entry.
+ * @param   papszArgvPreComp    The argument vector for executing preprocessor.
+ *                              The cArgvPreComp'th argument must be NULL.
+ * @param   cArgvPreComp        The number of arguments.
+ */
+static void kOCEntryPreProcessAndCompile(PKOCENTRY pEntry, const char * const *papszArgvPreComp, unsigned cArgvPreComp)
+{
+    if (    pEntry->fPipedCompile
+        &&  pEntry->fPipedPreComp)
+    {
+        /*
+         * Clean up old stuff first.
+         */
+        if (pEntry->Old.pszObjName)
+            UnlinkFileInDir(pEntry->Old.pszObjName, pEntry->pszDir);
+        if (pEntry->New.pszObjName)
+            UnlinkFileInDir(pEntry->New.pszObjName, pEntry->pszDir);
+        if (pEntry->Old.pszCppName)
+            UnlinkFileInDir(pEntry->Old.pszCppName, pEntry->pszDir);
+        if (pEntry->New.pszCppName)
+            UnlinkFileInDir(pEntry->New.pszCppName, pEntry->pszDir);
+
+        /*
+         * Do the actual compile and write the preprocessor output to disk.
+         */
+        kOCEntrySpawnTee(pEntry, papszArgvPreComp, cArgvPreComp,
+                         (const char * const *)pEntry->New.papszArgvCompile, pEntry->New.cArgvCompile,
+                         "preprocess|compile", kOCEntryTeeConsumer);
+        if (pEntry->pszMakeDepFilename)
+            kOCDepWriteToFile(&pEntry->DepState, pEntry->pszMakeDepFilename,  pEntry->New.pszObjName, pEntry->pszDir,
+                              pEntry->fMakeDepFixCase, pEntry->fMakeDepQuiet, pEntry->fMakeDepGenStubs);
+    }
+    else
+    {
+        kOCEntryPreProcess(pEntry, papszArgvPreComp, cArgvPreComp);
+        kOCEntryCompileIt(pEntry);
+    }
+}
+
+
+/**
+ * Check whether the string is a '#line' statement.
+ *
+ * @returns 1 if it is, 0 if it isn't.
+ * @param   psz         The line to examin.
+ * @parma   piLine      Where to store the line number.
+ * @parma   ppszFile    Where to store the start of the filename.
+ */
+static int kOCEntryIsLineStatement(const char *psz, unsigned *piLine, const char **ppszFile)
+{
+    unsigned iLine;
+
+    /* Expect a hash. */
+    if (*psz++ != '#')
+        return 0;
+
+    /* Skip blanks between '#' and the line / number */
+    while (*psz == ' ' || *psz == '\t')
+        psz++;
+
+    /* Skip the 'line' if present. */
+    if (!strncmp(psz, "line", sizeof("line") - 1))
+        psz += sizeof("line");
+
+    /* Expect a line number now. */
+    if ((unsigned char)(*psz - '0') > 9)
+        return 0;
+    iLine = 0;
+    do
+    {
+        iLine *= 10;
+        iLine += (*psz - '0');
+        psz++;
+    }
+    while ((unsigned char)(*psz - '0') <= 9);
+
+    /* Expect one or more space now. */
+    if (*psz != ' ' && *psz != '\t')
+        return 0;
+    do  psz++;
+    while (*psz == ' ' || *psz == '\t');
+
+    /* that's good enough. */
+    *piLine = iLine;
+    *ppszFile = psz;
+    return 1;
+}
+
+
+/**
+ * Scan backwards for the previous #line statement.
+ *
+ * @returns The filename in the previous statement.
+ * @param   pszStart        Where to start.
+ * @param   pszStop         Where to stop. Less than pszStart.
+ * @param   piLine          The line number count to adjust.
+ */
+static const char *kOCEntryFindFileStatement(const char *pszStart, const char *pszStop, unsigned *piLine)
+{
+    unsigned iLine = *piLine;
+    assert(pszStart >= pszStop);
+    while (pszStart >= pszStop)
+    {
+        if (*pszStart == '\n')
+            iLine++;
+        else if (*pszStart == '#')
+        {
+            unsigned iLineTmp;
+            const char *pszFile;
+            const char *psz = pszStart - 1;
+            while (psz >= pszStop && (*psz == ' ' || *psz =='\t'))
+                psz--;
+            if (    (psz < pszStop || *psz == '\n')
+                &&  kOCEntryIsLineStatement(pszStart, &iLineTmp, &pszFile))
+            {
+                *piLine = iLine + iLineTmp - 1;
+                return pszFile;
+            }
+        }
+        pszStart--;
+    }
+    return NULL;
+}
+
+
+/**
+ * Worker for kOCEntryCompareOldAndNewOutput() that compares the
+ * preprocessed output using a fast but not very good method.
+ *
+ * @returns 1 if matching, 0 if not matching.
+ * @param   pEntry      The entry containing the names of the files to compare.
+ *                      The entry is not updated in any way.
+ */
+static int kOCEntryCompareFast(PCKOCENTRY pEntry)
+{
+    const char *        psz1 = pEntry->New.pszCppMapping;
+    const char * const  pszEnd1 = psz1 + pEntry->New.cbCpp;
+    const char *        psz2 = pEntry->Old.pszCppMapping;
+    const char * const  pszEnd2 = psz2 + pEntry->Old.cbCpp;
+
+    assert(*pszEnd1 == '\0');
+    assert(*pszEnd2 == '\0');
+
+    /*
+     * Iterate block by block and backtrack when we find a difference.
+     */
+    for (;;)
+    {
+        size_t cch = pszEnd1 - psz1;
+        if (cch > (size_t)(pszEnd2 - psz2))
+            cch = pszEnd2 - psz2;
+        if (cch > 4096)
+            cch = 4096;
+        if (    cch
+            &&  !memcmp(psz1, psz2, cch))
+        {
+            /* no differences */
+            psz1 += cch;
+            psz2 += cch;
+        }
+        else
+        {
+            /*
+             * Pinpoint the difference exactly and the try find the start
+             * of that line. Then skip forward until we find something to
+             * work on that isn't spaces, #line statements or closing curly
+             * braces.
+             *
+             * The closing curly braces are ignored because they are frequently
+             * found at the end of header files (__END_DECLS) and the worst
+             * thing that may happen if it isn't one of these braces we're
+             * ignoring is that the final line in a function block is a little
+             * bit off in the debug info.
+             *
+             * Since we might be skipping a few new empty headers, it is
+             * possible that we will omit this header from the dependencies
+             * when using VCC. This might not be a problem, since it seems
+             * we'll have to use the preprocessor output to generate the deps
+             * anyway.
+             */
+            const char *psz;
+            const char *pszMismatch1;
+            const char *pszFile1 = NULL;
+            unsigned    iLine1 = 0;
+            unsigned    cCurlyBraces1 = 0;
+            const char *pszMismatch2;
+            const char *pszFile2 = NULL;
+            unsigned    iLine2 = 0;
+            unsigned    cCurlyBraces2 = 0;
+
+            /* locate the difference. */
+            while (cch >= 512 && !memcmp(psz1, psz2, 512))
+                psz1 += 512, psz2 += 512, cch -= 512;
+            while (cch >= 64 && !memcmp(psz1, psz2, 64))
+                psz1 += 64, psz2 += 64, cch -= 64;
+            while (*psz1 == *psz2 && cch > 0)
+                psz1++, psz2++, cch--;
+
+            /* locate the start of that line. */
+            psz = psz1;
+            while (     psz > pEntry->New.pszCppMapping
+                   &&   psz[-1] != '\n')
+                psz--;
+            psz2 -= (psz1 - psz);
+            pszMismatch2 = psz2;
+            pszMismatch1 = psz1 = psz;
+
+            /* Parse the 1st file line by line. */
+            while (psz1 < pszEnd1)
+            {
+                if (*psz1 == '\n')
+                {
+                    psz1++;
+                    iLine1++;
+                }
+                else
+                {
+                    psz = psz1;
+                    while (isspace(*psz) && *psz != '\n')
+                        psz++;
+                    if (*psz == '\n')
+                    {
+                        psz1 = psz + 1;
+                        iLine1++;
+                    }
+                    else if (*psz == '#' && kOCEntryIsLineStatement(psz, &iLine1, &pszFile1))
+                    {
+                        psz1 = memchr(psz, '\n', pszEnd1 - psz);
+                        if (!psz1++)
+                            psz1 = pszEnd1;
+                    }
+                    else if (*psz == '}')
+                    {
+                        do psz++;
+                        while (isspace(*psz) && *psz != '\n');
+                        if (*psz == '\n')
+                            iLine1++;
+                        else if (psz != pszEnd1)
+                            break;
+                        cCurlyBraces1++;
+                        psz1 = psz;
+                    }
+                    else if (psz == pszEnd1)
+                        psz1 = psz;
+                    else /* found something that can be compared. */
+                        break;
+                }
+            }
+
+            /* Ditto for the 2nd file. */
+            while (psz2 < pszEnd2)
+            {
+                if (*psz2 == '\n')
+                {
+                    psz2++;
+                    iLine2++;
+                }
+                else
+                {
+                    psz = psz2;
+                    while (isspace(*psz) && *psz != '\n')
+                        psz++;
+                    if (*psz == '\n')
+                    {
+                        psz2 = psz + 1;
+                        iLine2++;
+                    }
+                    else if (*psz == '#' && kOCEntryIsLineStatement(psz, &iLine2, &pszFile2))
+                    {
+                        psz2 = memchr(psz, '\n', pszEnd2 - psz);
+                        if (!psz2++)
+                            psz2 = pszEnd2;
+                    }
+                    else if (*psz == '}')
+                    {
+                        do psz++;
+                        while (isspace(*psz) && *psz != '\n');
+                        if (*psz == '\n')
+                            iLine2++;
+                        else if (psz != pszEnd2)
+                            break;
+                        cCurlyBraces2++;
+                        psz2 = psz;
+                    }
+                    else if (psz == pszEnd2)
+                        psz2 = psz;
+                    else /* found something that can be compared. */
+                        break;
+                }
+            }
+
+            /* Match the number of ignored closing curly braces. */
+            if (cCurlyBraces1 != cCurlyBraces2)
+                return 0;
+
+            /* Reaching the end of any of them means the return statement can decide. */
+            if (   psz1 == pszEnd1
+                || psz2 == pszEnd2)
+                break;
+
+            /* Match the current line. */
+            psz = memchr(psz1, '\n', pszEnd1 - psz1);
+            if (!psz++)
+                psz = pszEnd1;
+            cch = psz - psz1;
+            if (psz2 + cch > pszEnd2)
+                break;
+            if (memcmp(psz1, psz2, cch))
+                break;
+
+            /* Check that we're at the same location now. */
+            if (!pszFile1)
+                pszFile1 = kOCEntryFindFileStatement(pszMismatch1, pEntry->New.pszCppMapping, &iLine1);
+            if (!pszFile2)
+                pszFile2 = kOCEntryFindFileStatement(pszMismatch2, pEntry->Old.pszCppMapping, &iLine2);
+            if (pszFile1 && pszFile2)
+            {
+                if (iLine1 != iLine2)
+                    break;
+                while (*pszFile1 == *pszFile2 && *pszFile1 != '\n' && *pszFile1)
+                    pszFile1++, pszFile2++;
+                if (*pszFile1 != *pszFile2)
+                    break;
+            }
+            else if (pszFile1 || pszFile2)
+            {
+                assert(0); /* this shouldn't happen. */
+                break;
+            }
+
+            /* Advance. We might now have a misaligned buffer, but that's memcmps problem... */
+            psz1 += cch;
+            psz2 += cch;
+        }
+    }
+
+    return psz1 == pszEnd1
+        && psz2 == pszEnd2;
+}
+
+
+/**
+ * Worker for kOCEntryCompileIfNeeded that compares the
+ * preprocessed output.
+ *
+ * @returns 1 if matching, 0 if not matching.
+ * @param   pEntry      The entry containing the names of the files to compare.
+ *                      This will load the old cpp output (changing pszOldCppName and Old.cbCpp).
+ */
+static int kOCEntryCompareOldAndNewOutput(PKOCENTRY pEntry)
+{
+    /*
+     * I may implement a more sophisticated alternative method later... maybe.
+     */
+    if (kOCEntryReadCppOutput(pEntry, &pEntry->Old, 1 /* nonfatal */) == -1)
+        return 0;
+    /*if ()
+        return kOCEntryCompareBest(pEntry);*/
+    return kOCEntryCompareFast(pEntry);
+}
+
+
+/**
+ * Check if re-compilation is required.
+ * This sets the fNeedCompile flag.
+ *
+ * @param   pEntry              The cache entry.
+ */
+static void kOCEntryCalcRecompile(PKOCENTRY pEntry)
+{
+    if (pEntry->fNeedCompiling)
+        return;
+
+    /*
+     * Check if the preprocessor output differ in any significant way?
+     */
+    if (!kOCSumHasEqualInChain(&pEntry->Old.SumHead, &pEntry->New.SumHead))
+    {
+        if (pEntry->fOptimizeCpp & 2)
+        {
+            InfoMsg(2, "no checksum match - no need to compare output, -O2.\n");
+            pEntry->fNeedCompiling = 1;
+        }
+        else
+        {
+            InfoMsg(2, "no checksum match - comparing output\n");
+            if (!kOCEntryCompareOldAndNewOutput(pEntry))
+                pEntry->fNeedCompiling = 1;
+            else
+                kOCSumAddChain(&pEntry->New.SumHead, &pEntry->Old.SumHead);
+        }
+    }
+}
+
+
+/**
+ * Does this cache entry need compiling or what?
+ *
+ * @returns 1 if it does, 0 if it doesn't.
+ * @param   pEntry      The cache entry in question.
+ */
+static int kOCEntryNeedsCompiling(PCKOCENTRY pEntry)
+{
+    return pEntry->fNeedCompiling;
+}
+
+
+/**
+ * Tries to hardlink a file.
+ *
+ * @returns 1 if it succeeded, 0 if it didn't.
+ * @param   pszLink     The name of the hardlink.
+ * @param   pszLinkTo   The file to hardlinkg @a pszDst to.
+ */
+static int kOCEntryTryHardlink(const char *pszLink, const char *pszLinkTo)
+{
+#ifdef __WIN__
+    typedef BOOL (WINAPI *PFNCREATEHARDLINKA)(LPCSTR, LPCSTR, LPSECURITY_ATTRIBUTES);
+    static PFNCREATEHARDLINKA   s_pfnCreateHardLinkA = NULL;
+    static int                  s_fTried = FALSE;
+
+    /* The API was introduced in Windows 2000, so resolve it dynamically. */
+    if (!s_pfnCreateHardLinkA)
+    {
+        if (!s_fTried)
+        {
+            HMODULE hmod = LoadLibrary("KERNEL32.DLL");
+            if (hmod)
+                *(FARPROC *)&s_pfnCreateHardLinkA = GetProcAddress(hmod, "CreateHardLinkA");
+            s_fTried = TRUE;
+        }
+        if (!s_pfnCreateHardLinkA)
+            return 0;
+    }
+
+    if (!s_pfnCreateHardLinkA(pszLink, pszLinkTo, NULL))
+        return 0;
+#else
+    if (link(pszLinkTo, pszLink) != 0)
+        return 0;
+#endif
+    return 1;
+}
+
+
+
+/**
+ * Worker function for kOCEntryCopy.
+ *
+ * @param   pEntry      The entry we're coping to, which pszTo is relative to.
+ * @param   pszTo       The destination.
+ * @param   pszFrom     The source. This path will be freed.
+ */
+static void kOCEntryCopyFile(PCKOCENTRY pEntry, const char *pszTo, char *pszSrc)
+{
+    char *pszDst = MakePathFromDirAndFile(pszTo, pEntry->pszDir);
+    unlink(pszDst);
+    if (!kOCEntryTryHardlink(pszDst, pszSrc))
+    {
+        char *pszBuf = xmalloc(256 * 1024);
+        char *psz;
+        int fdSrc;
+        int fdDst;
+
+        /*
+         * Open the files.
+         */
+        fdSrc = open(pszSrc, O_RDONLY | O_BINARY);
+        if (fdSrc == -1)
+            FatalDie("failed to open '%s': %s\n", pszSrc, strerror(errno));
+
+        fdDst = open(pszDst, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666);
+        if (fdDst == -1)
+            FatalDie("failed to create '%s': %s\n", pszDst, strerror(errno));
+
+        /*
+         * Copy them.
+         */
+        for (;;)
+        {
+            /* read a chunk. */
+            long cbRead = read(fdSrc, pszBuf, 256*1024);
+            if (cbRead < 0)
+            {
+                if (errno == EINTR)
+                    continue;
+                FatalDie("read '%s' failed: %s\n", pszSrc, strerror(errno));
+            }
+            if (!cbRead)
+                break; /* eof */
+
+            /* write the chunk. */
+            psz = pszBuf;
+            do
+            {
+                long cbWritten = write(fdDst, psz, cbRead);
+                if (cbWritten < 0)
+                {
+                    if (errno == EINTR)
+                        continue;
+                    FatalDie("write '%s' failed: %s\n", pszSrc, strerror(errno));
+                }
+                psz += cbWritten;
+                cbRead -= cbWritten;
+            } while (cbRead > 0);
+        }
+
+        /* cleanup */
+        if (close(fdDst) != 0)
+            FatalDie("closing '%s' failed: %s\n", pszDst, strerror(errno));
+        close(fdSrc);
+        free(pszBuf);
+    }
+    free(pszDst);
+    free(pszSrc);
+}
+
+
+/**
+ * Copies the object (and whatever else) from one cache entry to another.
+ *
+ * This is called when a matching cache entry has been found and we don't
+ * need to recompile anything.
+ *
+ * @param   pEntry      The entry to copy to.
+ * @param   pFrom       The entry to copy from.
+ */
+static void kOCEntryCopy(PKOCENTRY pEntry, PCKOCENTRY pFrom)
+{
+    kOCEntryCopyFile(pEntry, pEntry->New.pszObjName,
+                     MakePathFromDirAndFile(pFrom->New.pszObjName
+                                            ? pFrom->New.pszObjName : pFrom->Old.pszObjName,
+                                            pFrom->pszDir));
+}
+
+
+/**
+ * Gets the absolute path to the cache entry.
+ *
+ * @returns absolute path to the cache entry.
+ * @param   pEntry      The cache entry in question.
+ */
+static const char *kOCEntryAbsPath(PCKOCENTRY pEntry)
+{
+    return pEntry->pszAbsPath;
+}
+
+
+
+
+
+
+/**
+ * Digest of one cache entry.
+ *
+ * This contains all the information required to find a matching
+ * cache entry without having to open each of the files.
+ */
+typedef struct KOCDIGEST
+{
+    /** The relative path to the entry. Optional if pszAbsPath is set. */
+    char *pszRelPath;
+    /** The absolute path to the entry. Optional if pszRelPath is set. */
+    char *pszAbsPath;
+    /** The target os/arch identifier. */
+    char *pszTarget;
+    /** A unique number assigned to the entry when it's (re)-inserted
+     * into the cache. This is used for simple consitency checking. */
+    uint32_t uKey;
+    /** The checksum of the compile argument vector. */
+    KOCSUM SumCompArgv;
+    /** The list of preprocessor output checksums that's . */
+    KOCSUM SumHead;
+} KOCDIGEST;
+/** Pointer to a file digest. */
+typedef KOCDIGEST *PKOCDIGEST;
+/** Pointer to a const file digest. */
+typedef KOCDIGEST *PCKOCDIGEST;
+
+
+/**
+ * Initializes the specified digest.
+ *
+ * @param   pDigest     The digest.
+ */
+static void kOCDigestInit(PKOCDIGEST pDigest)
+{
+    memset(pDigest, 0, sizeof(*pDigest));
+    kOCSumInit(&pDigest->SumHead);
+}
+
+
+/**
+ * Initializes the digest for the specified entry.
+ *
+ * @param   pDigest     The (uninitialized) digest.
+ * @param   pEntry      The entry.
+ */
+static void kOCDigestInitFromEntry(PKOCDIGEST pDigest, PCKOCENTRY pEntry)
+{
+    kOCDigestInit(pDigest);
+
+    pDigest->uKey = pEntry->uKey;
+    pDigest->pszTarget = xstrdup(pEntry->New.pszTarget ? pEntry->New.pszTarget : pEntry->Old.pszTarget);
+
+    kOCSumInit(&pDigest->SumCompArgv);
+    if (!kOCSumIsEmpty(&pEntry->New.SumCompArgv))
+        kOCSumAdd(&pDigest->SumCompArgv, &pEntry->New.SumCompArgv);
+    else
+        kOCSumAdd(&pDigest->SumCompArgv, &pEntry->Old.SumCompArgv);
+
+    kOCSumInit(&pDigest->SumHead);
+    if (!kOCSumIsEmpty(&pEntry->New.SumHead))
+        kOCSumAddChain(&pDigest->SumHead, &pEntry->New.SumHead);
+    else
+        kOCSumAddChain(&pDigest->SumHead, &pEntry->Old.SumHead);
+
+    /** @todo implement selective relative path support. */
+    pDigest->pszRelPath = NULL;
+    pDigest->pszAbsPath = xstrdup(kOCEntryAbsPath(pEntry));
+}
+
+
+/**
+ * Purges a digest, freeing all resources and returning
+ * it to the initial state.
+ *
+ * @param   pDigest     The digest.
+ */
+static void kOCDigestPurge(PKOCDIGEST pDigest)
+{
+    free(pDigest->pszRelPath);
+    free(pDigest->pszAbsPath);
+    free(pDigest->pszTarget);
+    pDigest->pszTarget = pDigest->pszAbsPath = pDigest->pszRelPath = NULL;
+    pDigest->uKey = 0;
+    kOCSumDeleteChain(&pDigest->SumCompArgv);
+    kOCSumDeleteChain(&pDigest->SumHead);
+}
+
+
+/**
+ * Returns the absolute path to the entry, calculating
+ * the path if necessary.
+ *
+ * @returns absolute path.
+ * @param   pDigest     The digest.
+ * @param   pszDir      The cache directory that it might be relative to.
+ */
+static const char *kOCDigestAbsPath(PCKOCDIGEST pDigest, const char *pszDir)
+{
+    if (!pDigest->pszAbsPath)
+    {
+        char *pszPath = MakePathFromDirAndFile(pDigest->pszRelPath, pszDir);
+        ((PKOCDIGEST)pDigest)->pszAbsPath = AbsPath(pszPath);
+        free(pszPath);
+    }
+    return pDigest->pszAbsPath;
+}
+
+
+/**
+ * Checks that the digest matches the
+ *
+ * @returns 1 if valid, 0 if invalid in some way.
+ *
+ * @param   pDigest     The digest to validate.
+ * @param   pEntry      What to validate it against.
+ */
+static int kOCDigestIsValid(PCKOCDIGEST pDigest, PCKOCENTRY pEntry)
+{
+    PCKOCSUM pSum;
+    PCKOCSUM pSumEntry;
+
+    if (pDigest->uKey != pEntry->uKey)
+        return 0;
+
+    if (!kOCSumIsEqual(&pDigest->SumCompArgv,
+                       kOCSumIsEmpty(&pEntry->New.SumCompArgv)
+                       ? &pEntry->Old.SumCompArgv : &pEntry->New.SumCompArgv))
+        return 0;
+
+    if (strcmp(pDigest->pszTarget, pEntry->New.pszTarget ? pEntry->New.pszTarget : pEntry->Old.pszTarget))
+        return 0;
+
+    /* match the checksums */
+    pSumEntry = kOCSumIsEmpty(&pEntry->New.SumHead)
+              ? &pEntry->Old.SumHead : &pEntry->New.SumHead;
+    for (pSum = &pDigest->SumHead; pSum; pSum = pSum->pNext)
+        if (!kOCSumHasEqualInChain(pSumEntry, pSum))
+            return 0;
+
+    return 1;
+}
+
+
+
+
+
+/**
+ * The structure for the central cache entry.
+ */
+typedef struct KOBJCACHE
+{
+    /** The entry name. */
+    const char *pszName;
+    /** The dir that relative names in the digest are relative to. */
+    char *pszDir;
+    /** The absolute path. */
+    char *pszAbsPath;
+
+    /** The cache file descriptor. */
+    int fd;
+    /** The stream associated with fd. */
+    FILE *pFile;
+    /** Whether it's currently locked or not. */
+    unsigned fLocked;
+    /** Whether the cache file is dirty and needs writing back. */
+    unsigned fDirty;
+    /** Whether this is a new cache or not. */
+    unsigned fNewCache;
+
+    /** The cache file generation. */
+    uint32_t uGeneration;
+    /** The next valid key. (Determin at load time.) */
+    uint32_t uNextKey;
+
+    /** Number of digests in paDigests. */
+    unsigned cDigests;
+    /** Array of digests for the KOCENTRY objects in the cache. */
+    PKOCDIGEST paDigests;
+
+} KOBJCACHE;
+/** Pointer to a cache. */
+typedef KOBJCACHE *PKOBJCACHE;
+/** Pointer to a const cache. */
+typedef KOBJCACHE const *PCKOBJCACHE;
+
+
+/**
+ * Creates an empty cache.
+ *
+ * This doesn't touch the file system, it just create the data structure.
+ *
+ * @returns Pointer to a cache.
+ * @param   pszCacheFile        The cache file.
+ */
+static PKOBJCACHE kObjCacheCreate(const char *pszCacheFile)
+{
+    PKOBJCACHE pCache;
+    size_t off;
+
+    /*
+     * Allocate an empty entry.
+     */
+    pCache = xmallocz(sizeof(*pCache));
+    pCache->fd = -1;
+
+    /*
+     * Setup the directory and cache file name.
+     */
+    pCache->pszAbsPath = AbsPath(pszCacheFile);
+    pCache->pszName = FindFilenameInPath(pCache->pszAbsPath);
+    off = pCache->pszName - pCache->pszAbsPath;
+    if (!off)
+        FatalDie("Failed to find abs path for '%s'!\n", pszCacheFile);
+    pCache->pszDir = xmalloc(off);
+    memcpy(pCache->pszDir, pCache->pszAbsPath, off - 1);
+    pCache->pszDir[off - 1] = '\0';
+
+    return pCache;
+}
+
+
+/**
+ * Destroys the cache - closing any open files, freeing up heap memory and such.
+ *
+ * @param   pCache      The cache.
+ */
+static void kObjCacheDestroy(PKOBJCACHE pCache)
+{
+    if (pCache->pFile)
+    {
+        errno = 0;
+        if (fclose(pCache->pFile) != 0)
+            FatalMsg("fclose failed: %s\n", strerror(errno));
+        pCache->pFile = NULL;
+        pCache->fd = -1;
+    }
+    free(pCache->paDigests);
+    free(pCache->pszAbsPath);
+    free(pCache->pszDir);
+    free(pCache);
+}
+
+
+/**
+ * Purges the data in the cache object.
+ *
+ * @param   pCache      The cache object.
+ */
+static void kObjCachePurge(PKOBJCACHE pCache)
+{
+    while (pCache->cDigests > 0)
+        kOCDigestPurge(&pCache->paDigests[--pCache->cDigests]);
+    free(pCache->paDigests);
+    pCache->paDigests = NULL;
+    pCache->uGeneration = 0;
+    pCache->uNextKey = 0;
+}
+
+
+/**
+ * (Re-)reads the file.
+ *
+ * @param   pCache      The cache to (re)-read.
+ */
+static void kObjCacheRead(PKOBJCACHE pCache)
+{
+    unsigned i;
+    char szBuf[8192];
+    int fBad = 0;
+
+    InfoMsg(4, "reading cache file...\n");
+
+    /*
+     * Rewind the file & stream, and associate a temporary buffer
+     * with the stream to speed up reading.
+     */
+    if (lseek(pCache->fd, 0, SEEK_SET) == -1)
+        FatalDie("lseek(cache-fd) failed: %s\n", strerror(errno));
+    rewind(pCache->pFile);
+    if (setvbuf(pCache->pFile, szBuf, _IOFBF, sizeof(szBuf)) != 0)
+        FatalDie("fdopen(cache-fd,rb) failed: %s\n", strerror(errno));
+
+    /*
+     * Read magic and generation.
+     */
+    if (    !fgets(g_szLine, sizeof(g_szLine), pCache->pFile)
+        ||  strcmp(g_szLine, "magic=kObjCache-v0.1.0\n"))
+    {
+        InfoMsg(2, "bad cache file (magic)\n");
+        fBad = 1;
+    }
+    else if (    !fgets(g_szLine, sizeof(g_szLine), pCache->pFile)
+             ||  strncmp(g_szLine, "generation=", sizeof("generation=") - 1))
+    {
+        InfoMsg(2, "bad cache file (generation)\n");
+        fBad = 1;
+    }
+    else if (   pCache->uGeneration
+             && (long)pCache->uGeneration == atol(&g_szLine[sizeof("generation=") - 1]))
+    {
+        InfoMsg(3, "drop re-read unmodified cache file\n");
+        fBad = 0;
+    }
+    else
+    {
+        int fBadBeforeMissing;
+
+        /*
+         * Read everything (anew).
+         */
+        kObjCachePurge(pCache);
+        do
+        {
+            PKOCDIGEST pDigest;
+            char *pszNl;
+            char *pszVal;
+            char *psz;
+
+            /* Split the line and drop the trailing newline. */
+            pszVal = strchr(g_szLine, '=');
+            if ((fBad = pszVal == NULL))
+                break;
+            *pszVal++ = '\0';
+
+            pszNl = strchr(pszVal, '\n');
+            if (pszNl)
+                *pszNl = '\0';
+
+            /* digest '#'? */
+            psz = strchr(g_szLine, '#');
+            if (psz)
+            {
+                char *pszNext;
+                i = strtoul(++psz, &pszNext, 0);
+                if ((fBad = pszNext && *pszNext))
+                    break;
+                if ((fBad = i >= pCache->cDigests))
+                    break;
+                pDigest = &pCache->paDigests[i];
+                *psz = '\0';
+            }
+            else
+                pDigest = NULL;
+
+
+            /* string case on value name. */
+            if (!strcmp(g_szLine, "sum-#"))
+            {
+                KOCSUM Sum;
+                if ((fBad = kOCSumInitFromString(&Sum, pszVal) != 0))
+                    break;
+                kOCSumAdd(&pDigest->SumHead, &Sum);
+            }
+            else if (!strcmp(g_szLine, "digest-abs-#"))
+            {
+                if ((fBad = pDigest->pszAbsPath != NULL))
+                    break;
+                pDigest->pszAbsPath = xstrdup(pszVal);
+            }
+            else if (!strcmp(g_szLine, "digest-rel-#"))
+            {
+                if ((fBad = pDigest->pszRelPath != NULL))
+                    break;
+                pDigest->pszRelPath = xstrdup(pszVal);
+            }
+            else if (!strcmp(g_szLine, "key-#"))
+            {
+                if ((fBad = pDigest->uKey != 0))
+                    break;
+                pDigest->uKey = strtoul(pszVal, &psz, 0);
+                if ((fBad = psz && *psz))
+                    break;
+                if (pDigest->uKey >= pCache->uNextKey)
+                    pCache->uNextKey = pDigest->uKey + 1;
+            }
+            else if (!strcmp(g_szLine, "comp-argv-sum-#"))
+            {
+                if ((fBad = !kOCSumIsEmpty(&pDigest->SumCompArgv)))
+                    break;
+                if ((fBad = kOCSumInitFromString(&pDigest->SumCompArgv, pszVal) != 0))
+                    break;
+            }
+            else if (!strcmp(g_szLine, "target-#"))
+            {
+                if ((fBad = pDigest->pszTarget != NULL))
+                    break;
+                pDigest->pszTarget = xstrdup(pszVal);
+            }
+            else if (!strcmp(g_szLine, "digests"))
+            {
+                if ((fBad = pCache->paDigests != NULL))
+                    break;
+                pCache->cDigests = strtoul(pszVal, &psz, 0);
+                if ((fBad = psz && *psz))
+                    break;
+                i = (pCache->cDigests + 4) & ~3;
+                pCache->paDigests = xmalloc(i * sizeof(pCache->paDigests[0]));
+                for (i = 0; i < pCache->cDigests; i++)
+                    kOCDigestInit(&pCache->paDigests[i]);
+            }
+            else if (!strcmp(g_szLine, "generation"))
+            {
+                if ((fBad = pCache->uGeneration != 0))
+                    break;
+                pCache->uGeneration = strtoul(pszVal, &psz, 0);
+                if ((fBad = psz && *psz))
+                    break;
+            }
+            else if (!strcmp(g_szLine, "the-end"))
+            {
+                fBad = strcmp(pszVal, "fine");
+                break;
+            }
+            else
+            {
+                fBad = 1;
+                break;
+            }
+        } while (fgets(g_szLine, sizeof(g_szLine), pCache->pFile));
+
+        /*
+         * Did we find everything?
+         */
+        fBadBeforeMissing = fBad;
+        if (    !fBad
+            &&  !pCache->uGeneration)
+            fBad = 1;
+        if (!fBad)
+            for (i = 0; i < pCache->cDigests; i++)
+            {
+                if ((fBad = kOCSumIsEmpty(&pCache->paDigests[i].SumCompArgv)))
+                    break;
+                if ((fBad = kOCSumIsEmpty(&pCache->paDigests[i].SumHead)))
+                    break;
+                if ((fBad = pCache->paDigests[i].uKey == 0))
+                    break;
+                if ((fBad = pCache->paDigests[i].pszAbsPath == NULL
+                         && pCache->paDigests[i].pszRelPath == NULL))
+                    break;
+                if ((fBad = pCache->paDigests[i].pszTarget == NULL))
+                    break;
+                InfoMsg(4, "digest-%u: %s\n", i, pCache->paDigests[i].pszAbsPath
+                        ? pCache->paDigests[i].pszAbsPath : pCache->paDigests[i].pszRelPath);
+            }
+        if (fBad)
+            InfoMsg(2, "bad cache file (%s)\n", fBadBeforeMissing ? g_szLine : "missing stuff");
+        else if (ferror(pCache->pFile))
+        {
+            InfoMsg(2, "cache file read error\n");
+            fBad = 1;
+        }
+    }
+    if (fBad)
+    {
+        kObjCachePurge(pCache);
+        pCache->fNewCache = 1;
+    }
+
+    /*
+     * Disassociate the buffer from the stream changing
+     * it to non-buffered mode.
+     */
+    if (setvbuf(pCache->pFile, NULL, _IONBF, 0) != 0)
+        FatalDie("setvbuf(,0,,0) failed: %s\n", strerror(errno));
+}
+
+
+/**
+ * Re-writes the cache file.
+ *
+ * @param   pCache      The cache to commit and unlock.
+ */
+static void kObjCacheWrite(PKOBJCACHE pCache)
+{
+    unsigned i;
+    off_t cb;
+    char szBuf[8192];
+    assert(pCache->fLocked);
+    assert(pCache->fDirty);
+
+    /*
+     * Rewind the file & stream, and associate a temporary buffer
+     * with the stream to speed up the writing.
+     */
+    if (lseek(pCache->fd, 0, SEEK_SET) == -1)
+        FatalDie("lseek(cache-fd) failed: %s\n", strerror(errno));
+    rewind(pCache->pFile);
+    if (setvbuf(pCache->pFile, szBuf, _IOFBF, sizeof(szBuf)) != 0)
+        FatalDie("setvbuf failed: %s\n", strerror(errno));
+
+    /*
+     * Write the header.
+     */
+    pCache->uGeneration++;
+    fprintf(pCache->pFile,
+            "magic=kObjCache-v0.1.0\n"
+            "generation=%d\n"
+            "digests=%d\n",
+            pCache->uGeneration,
+            pCache->cDigests);
+
+    /*
+     * Write the digests.
+     */
+    for (i = 0; i < pCache->cDigests; i++)
+    {
+        PCKOCDIGEST pDigest = &pCache->paDigests[i];
+        PKOCSUM pSum;
+
+        if (pDigest->pszAbsPath)
+            fprintf(pCache->pFile, "digest-abs-#%u=%s\n", i, pDigest->pszAbsPath);
+        if (pDigest->pszRelPath)
+            fprintf(pCache->pFile, "digest-rel-#%u=%s\n", i, pDigest->pszRelPath);
+        fprintf(pCache->pFile, "key-#%u=%u\n", i, pDigest->uKey);
+        fprintf(pCache->pFile, "target-#%u=%s\n", i, pDigest->pszTarget);
+        fprintf(pCache->pFile, "comp-argv-sum-#%u=", i);
+        kOCSumFPrintf(&pDigest->SumCompArgv, pCache->pFile);
+        for (pSum = &pDigest->SumHead; pSum; pSum = pSum->pNext)
+        {
+            fprintf(pCache->pFile, "sum-#%u=", i);
+            kOCSumFPrintf(pSum, pCache->pFile);
+        }
+    }
+
+    /*
+     * Close the stream and unlock fhe file.
+     * (Closing the stream shouldn't close the file handle IIRC...)
+     */
+    fprintf(pCache->pFile, "the-end=fine\n");
+    errno = 0;
+    if (    fflush(pCache->pFile) < 0
+        ||  ferror(pCache->pFile))
+    {
+        int iErr = errno;
+        fclose(pCache->pFile);
+        UnlinkFileInDir(pCache->pszName, pCache->pszDir);
+        FatalDie("Stream error occured while writing '%s' in '%s': %s\n",
+                 pCache->pszName, pCache->pszDir, strerror(iErr));
+    }
+    if (setvbuf(pCache->pFile, NULL, _IONBF, 0) != 0)
+        FatalDie("setvbuf(,0,,0) failed: %s\n", strerror(errno));
+
+    cb = lseek(pCache->fd, 0, SEEK_CUR);
+    if (cb == -1)
+        FatalDie("lseek(cache-file,0,CUR) failed: %s\n", strerror(errno));
+#if defined(__WIN__)
+    if (_chsize(pCache->fd, cb) == -1)
+#else
+    if (ftruncate(pCache->fd, cb) == -1)
+#endif
+        FatalDie("file truncation failed: %s\n", strerror(errno));
+    InfoMsg(4, "wrote '%s' in '%s', %d bytes\n", pCache->pszName, pCache->pszDir, cb);
+}
+
+
+/**
+ * Cleans out all invalid digests.s
+ *
+ * This is done periodically from the unlock routine to make
+ * sure we don't accidentally accumulate stale digests.
+ *
+ * @param   pCache      The cache to chek.
+ */
+static void kObjCacheClean(PKOBJCACHE pCache)
+{
+    unsigned i = pCache->cDigests;
+    while (i-- > 0)
+    {
+        /*
+         * Try open it and purge it if it's bad.
+         * (We don't kill the entry file because that's kmk clean's job.)
+         */
+        PCKOCDIGEST pDigest = &pCache->paDigests[i];
+        PKOCENTRY pEntry = kOCEntryCreate(kOCDigestAbsPath(pDigest, pCache->pszDir));
+        kOCEntryRead(pEntry);
+        if (    !kOCEntryCheck(pEntry)
+            ||  !kOCDigestIsValid(pDigest, pEntry))
+        {
+            unsigned cLeft;
+            kOCDigestPurge(pDigest);
+
+            pCache->cDigests--;
+            cLeft = pCache->cDigests - i;
+            if (cLeft)
+                memmove(pDigest, pDigest + 1, cLeft * sizeof(*pDigest));
+
+            pCache->fDirty = 1;
+        }
+        kOCEntryDestroy(pEntry);
+    }
+}
+
+
+/**
+ * Locks the cache for exclusive access.
+ *
+ * This will open the file if necessary and lock the entire file
+ * using the best suitable platform API (tricky).
+ *
+ * @param   pCache      The cache to lock.
+ */
+static void kObjCacheLock(PKOBJCACHE pCache)
+{
+    struct stat st;
+#if defined(__WIN__)
+    OVERLAPPED OverLapped;
+#endif
+
+    assert(!pCache->fLocked);
+
+    /*
+     * Open it?
+     */
+    if (pCache->fd < 0)
+    {
+        pCache->fd = OpenFileInDir(pCache->pszName, pCache->pszDir, O_CREAT | O_RDWR | O_BINARY, 0666);
+        if (pCache->fd == -1)
+        {
+            MakePath(pCache->pszDir);
+            pCache->fd = OpenFileInDir(pCache->pszName, pCache->pszDir, O_CREAT | O_RDWR | O_BINARY, 0666);
+            if (pCache->fd == -1)
+                FatalDie("Failed to create '%s' in '%s': %s\n", pCache->pszName, pCache->pszDir, strerror(errno));
+        }
+
+        pCache->pFile = fdopen(pCache->fd, "r+b");
+        if (!pCache->pFile)
+            FatalDie("fdopen failed: %s\n", strerror(errno));
+        if (setvbuf(pCache->pFile, NULL, _IONBF, 0) != 0)
+            FatalDie("setvbuf(,0,,0) failed: %s\n", strerror(errno));
+    }
+
+    /*
+     * Lock it.
+     */
+#if defined(__WIN__)
+    memset(&OverLapped, 0, sizeof(OverLapped));
+    if (!LockFileEx((HANDLE)_get_osfhandle(pCache->fd), LOCKFILE_EXCLUSIVE_LOCK, 0, ~0, 0, &OverLapped))
+        FatalDie("Failed to lock the cache file: Windows Error %d\n", GetLastError());
+#elif defined(__sun__)
+    {
+        struct flock fl;
+        fl.l_whence = 0;
+        fl.l_start = 0;
+        fl.l_len = 0;
+        fl.l_type = F_WRLCK;
+        if (fcntl(pCache->fd, F_SETLKW, &fl) != 0)
+            FatalDie("Failed to lock the cache file: %s\n", strerror(errno));
+    }
+#else
+    if (flock(pCache->fd, LOCK_EX) != 0)
+        FatalDie("Failed to lock the cache file: %s\n", strerror(errno));
+#endif
+    pCache->fLocked = 1;
+
+    /*
+     * Check for new cache and read it it's an existing cache.
+     *
+     * There is no point in initializing a new cache until we've finished
+     * compiling and has something to put into it, so we'll leave it as a
+     * 0 byte file.
+     */
+    if (fstat(pCache->fd, &st) == -1)
+        FatalDie("fstat(cache-fd) failed: %s\n", strerror(errno));
+    if (st.st_size)
+        kObjCacheRead(pCache);
+    else
+    {
+        pCache->fNewCache = 1;
+        InfoMsg(2, "the cache file is empty\n");
+    }
+}
+
+
+/**
+ * Unlocks the cache (without writing anything back).
+ *
+ * @param   pCache      The cache to unlock.
+ */
+static void kObjCacheUnlock(PKOBJCACHE pCache)
+{
+#if defined(__WIN__)
+    OVERLAPPED OverLapped;
+#endif
+    assert(pCache->fLocked);
+
+    /*
+     * Write it back if it's dirty.
+     */
+    if (pCache->fDirty)
+    {
+        if (    pCache->cDigests >= 16
+            &&  (pCache->uGeneration % 19) == 19)
+            kObjCacheClean(pCache);
+        kObjCacheWrite(pCache);
+        pCache->fDirty = 0;
+    }
+
+    /*
+     * Lock it.
+     */
+#if defined(__WIN__)
+    memset(&OverLapped, 0, sizeof(OverLapped));
+    if (!UnlockFileEx((HANDLE)_get_osfhandle(pCache->fd), 0, ~0U, 0, &OverLapped))
+        FatalDie("Failed to unlock the cache file: Windows Error %d\n", GetLastError());
+#elif defined(__sun__)
+    {
+        struct flock fl;
+        fl.l_whence = 0;
+        fl.l_start = 0;
+        fl.l_len = 0;
+        fl.l_type = F_UNLCK;
+        if (fcntl(pCache->fd, F_SETLKW, &fl) != 0)
+            FatalDie("Failed to lock the cache file: %s\n", strerror(errno));
+    }
+#else
+    if (flock(pCache->fd, LOCK_UN) != 0)
+        FatalDie("Failed to unlock the cache file: %s\n", strerror(errno));
+#endif
+    pCache->fLocked = 0;
+}
+
+
+/**
+ * Removes the entry from the cache.
+ *
+ * The entry doesn't need to be in the cache.
+ * The cache entry (file) itself is not touched.
+ *
+ * @param   pCache      The cache.
+ * @param   pEntry      The entry.
+ */
+static void kObjCacheRemoveEntry(PKOBJCACHE pCache, PCKOCENTRY pEntry)
+{
+    unsigned i = pCache->cDigests;
+    while (i-- > 0)
+    {
+        PKOCDIGEST pDigest = &pCache->paDigests[i];
+        if (ArePathsIdentical(kOCDigestAbsPath(pDigest, pCache->pszDir),
+                              kOCEntryAbsPath(pEntry)))
+        {
+            unsigned cLeft;
+            kOCDigestPurge(pDigest);
+
+            pCache->cDigests--;
+            cLeft = pCache->cDigests - i;
+            if (cLeft)
+                memmove(pDigest, pDigest + 1, cLeft * sizeof(*pDigest));
+
+            pCache->fDirty = 1;
+            InfoMsg(3, "removing entry '%s'; %d left.\n", kOCEntryAbsPath(pEntry), pCache->cDigests);
+        }
+    }
+}
+
+
+/**
+ * Inserts the entry into the cache.
+ *
+ * The cache entry (file) itself is not touched by this operation,
+ * the pEntry object otoh is.
+ *
+ * @param   pCache      The cache.
+ * @param   pEntry      The entry.
+ */
+static void kObjCacheInsertEntry(PKOBJCACHE pCache, PKOCENTRY pEntry)
+{
+    unsigned i;
+
+    /*
+     * Find a new key.
+     */
+    pEntry->uKey = pCache->uNextKey++;
+    if (!pEntry->uKey)
+        pEntry->uKey = pCache->uNextKey++;
+    i = pCache->cDigests;
+    while (i-- > 0)
+        if (pCache->paDigests[i].uKey == pEntry->uKey)
+        {
+            pEntry->uKey = pCache->uNextKey++;
+            if (!pEntry->uKey)
+                pEntry->uKey = pCache->uNextKey++;
+            i = pCache->cDigests;
+        }
+
+    /*
+     * Reallocate the digest array?
+     */
+    if (    !(pCache->cDigests & 3)
+        &&  (pCache->cDigests || !pCache->paDigests))
+        pCache->paDigests = xrealloc(pCache->paDigests, sizeof(pCache->paDigests[0]) * (pCache->cDigests + 4));
+
+    /*
+     * Create a new digest.
+     */
+    kOCDigestInitFromEntry(&pCache->paDigests[pCache->cDigests], pEntry);
+    pCache->cDigests++;
+    InfoMsg(4, "Inserted digest #%u: %s\n", pCache->cDigests - 1, kOCEntryAbsPath(pEntry));
+
+    pCache->fDirty = 1;
+}
+
+
+/**
+ * Find a matching cache entry.
+ */
+static PKOCENTRY kObjCacheFindMatchingEntry(PKOBJCACHE pCache, PCKOCENTRY pEntry)
+{
+    unsigned i = pCache->cDigests;
+
+    assert(pEntry->fNeedCompiling);
+    assert(!kOCSumIsEmpty(&pEntry->New.SumCompArgv));
+    assert(!kOCSumIsEmpty(&pEntry->New.SumHead));
+
+    while (i-- > 0)
+    {
+        /*
+         * Matching?
+         */
+        PCKOCDIGEST pDigest = &pCache->paDigests[i];
+        if (    kOCSumIsEqual(&pDigest->SumCompArgv, &pEntry->New.SumCompArgv)
+            &&  kOCSumHasEqualInChain(&pDigest->SumHead, &pEntry->New.SumHead))
+        {
+            /*
+             * Try open it.
+             */
+            unsigned cLeft;
+            PKOCENTRY pRetEntry = kOCEntryCreate(kOCDigestAbsPath(pDigest, pCache->pszDir));
+            kOCEntryRead(pRetEntry);
+            if (    kOCEntryCheck(pRetEntry)
+                &&  kOCDigestIsValid(pDigest, pRetEntry))
+                return pRetEntry;
+            kOCEntryDestroy(pRetEntry);
+
+            /* bad entry, purge it. */
+            InfoMsg(3, "removing bad digest '%s'\n", kOCDigestAbsPath(pDigest, pCache->pszDir));
+            kOCDigestPurge(pDigest);
+
+            pCache->cDigests--;
+            cLeft = pCache->cDigests - i;
+            if (cLeft)
+                memmove(pDigest, pDigest + 1, cLeft * sizeof(*pDigest));
+
+            pCache->fDirty = 1;
+        }
+    }
+
+    return NULL;
+}
+
+
+/**
+ * Is this a new cache?
+ *
+ * @returns 1 if new, 0 if not new.
+ * @param   pEntry      The entry.
+ */
+static int kObjCacheIsNew(PKOBJCACHE pCache)
+{
+    return pCache->fNewCache;
+}
+
+
+/**
+ * Prints a syntax error and returns the appropriate exit code
+ *
+ * @returns approriate exit code.
+ * @param   pszFormat   The syntax error message.
+ * @param   ...         Message args.
+ */
+static int SyntaxError(const char *pszFormat, ...)
+{
+    va_list va;
+    fprintf(stderr, "kObjCache: syntax error: ");
+    va_start(va, pszFormat);
+    vfprintf(stderr, pszFormat, va);
+    va_end(va);
+    return 1;
+}
+
+
+/**
+ * Prints the usage.
+ * @returns 0.
+ */
+static int usage(FILE *pOut)
+{
+    fprintf(pOut,
+            "syntax: kObjCache [--kObjCache-options] [-v|--verbose]\n"
+            "            <  [-c|--cache-file <cache-file>]\n"
+            "             | [-n|--name <name-in-cache>] [[-d|--cache-dir <cache-dir>]] >\n"
+            "            <-f|--file <local-cache-file>>\n"
+            "            <-t|--target <target-name>>\n"
+            "            [-r|--redir-stdout] [-p|--passthru] [--named-pipe-compile <pipename>]\n"
+            "            --kObjCache-cpp <filename> <preprocessor + args>\n"
+            "            --kObjCache-cc <object> <compiler + args>\n"
+            "            [--kObjCache-both [args]]\n"
+            );
+    fprintf(pOut,
+            "            [--kObjCache-cpp|--kObjCache-cc [more args]]\n"
+            "        kObjCache <-V|--version>\n"
+            "        kObjCache [-?|/?|-h|/h|--help|/help]\n"
+            "\n"
+            "The env.var. KOBJCACHE_DIR sets the default cache diretory (-d).\n"
+            "The env.var. KOBJCACHE_OPTS allow you to specifie additional options\n"
+            "without having to mess with the makefiles. These are appended with "
+            "a --kObjCache-options between them and the command args.\n"
+            "\n");
+    return 0;
+}
+
+
+int main(int argc, char **argv)
+{
+    PKOBJCACHE pCache;
+    PKOCENTRY pEntry;
+
+    const char *pszCacheDir = getenv("KOBJCACHE_DIR");
+    const char *pszCacheName = NULL;
+    const char *pszCacheFile = NULL;
+    const char *pszEntryFile = NULL;
+
+    const char **papszArgvPreComp = NULL;
+    unsigned cArgvPreComp = 0;
+    const char *pszPreCompName = NULL;
+    int fRedirPreCompStdOut = 0;
+
+    const char **papszArgvCompile = NULL;
+    unsigned cArgvCompile = 0;
+    const char *pszObjName = NULL;
+    int fRedirCompileStdIn = 0;
+    const char *pszNmPipeCompile = NULL;
+
+    const char *pszMakeDepFilename = NULL;
+    int fMakeDepFixCase = 0;
+    int fMakeDepGenStubs = 0;
+    int fMakeDepQuiet = 0;
+    int fOptimizePreprocessorOutput = 0;
+
+    const char *pszTarget = NULL;
+
+    enum { kOC_Options, kOC_CppArgv, kOC_CcArgv, kOC_BothArgv } enmMode = kOC_Options;
+
+    size_t cch;
+    char *psz;
+    int i;
+
+    SetErrorPrefix("kObjCache");
+
+    /*
+     * Arguments passed in the environmnet?
+     */
+    psz = getenv("KOBJCACHE_OPTS");
+    if (psz)
+        AppendArgs(&argc, &argv, psz, "--kObjCache-options");
+
+    /*
+     * Parse the arguments.
+     */
+    if (argc <= 1)
+        return usage(stderr);
+    for (i = 1; i < argc; i++)
+    {
+        if (!strcmp(argv[i], "--kObjCache-cpp"))
+        {
+            enmMode = kOC_CppArgv;
+            if (!pszPreCompName)
+            {
+                if (++i >= argc)
+                    return SyntaxError("--kObjCache-cpp requires an object filename!\n");
+                pszPreCompName = argv[i];
+            }
+        }
+        else if (!strcmp(argv[i], "--kObjCache-cc"))
+        {
+            enmMode = kOC_CcArgv;
+            if (!pszObjName)
+            {
+                if (++i >= argc)
+                    return SyntaxError("--kObjCache-cc requires an preprocessor output filename!\n");
+                pszObjName = argv[i];
+            }
+        }
+        else if (!strcmp(argv[i], "--kObjCache-both"))
+            enmMode = kOC_BothArgv;
+        else if (!strcmp(argv[i], "--kObjCache-options"))
+            enmMode = kOC_Options;
+        else if (!strcmp(argv[i], "--help"))
+            return usage(stderr);
+        else if (enmMode != kOC_Options)
+        {
+            if (enmMode == kOC_CppArgv || enmMode == kOC_BothArgv)
+            {
+                if (!(cArgvPreComp % 16))
+                    papszArgvPreComp = xrealloc((void *)papszArgvPreComp, (cArgvPreComp + 17) * sizeof(papszArgvPreComp[0]));
+                papszArgvPreComp[cArgvPreComp++] = argv[i];
+                papszArgvPreComp[cArgvPreComp] = NULL;
+            }
+            if (enmMode == kOC_CcArgv || enmMode == kOC_BothArgv)
+            {
+                if (!(cArgvCompile % 16))
+                    papszArgvCompile = xrealloc((void *)papszArgvCompile, (cArgvCompile + 17) * sizeof(papszArgvCompile[0]));
+                papszArgvCompile[cArgvCompile++] = argv[i];
+                papszArgvCompile[cArgvCompile] = NULL;
+            }
+        }
+        else if (!strcmp(argv[i], "-f") || !strcmp(argv[i], "--entry-file"))
+        {
+            if (i + 1 >= argc)
+                return SyntaxError("%s requires a cache entry filename!\n", argv[i]);
+            pszEntryFile = argv[++i];
+        }
+        else if (!strcmp(argv[i], "-c") || !strcmp(argv[i], "--cache-file"))
+        {
+            if (i + 1 >= argc)
+                return SyntaxError("%s requires a cache filename!\n", argv[i]);
+            pszCacheFile = argv[++i];
+        }
+        else if (!strcmp(argv[i], "-n") || !strcmp(argv[i], "--name"))
+        {
+            if (i + 1 >= argc)
+                return SyntaxError("%s requires a cache name!\n", argv[i]);
+            pszCacheName = argv[++i];
+        }
+        else if (!strcmp(argv[i], "-d") || !strcmp(argv[i], "--cache-dir"))
+        {
+            if (i + 1 >= argc)
+                return SyntaxError("%s requires a cache directory!\n", argv[i]);
+            pszCacheDir = argv[++i];
+        }
+        else if (!strcmp(argv[i], "-t") || !strcmp(argv[i], "--target"))
+        {
+            if (i + 1 >= argc)
+                return SyntaxError("%s requires a target platform/arch name!\n", argv[i]);
+            pszTarget = argv[++i];
+        }
+        else if (!strcmp(argv[i], "--named-pipe-compile"))
+        {
+            if (i + 1 >= argc)
+                return SyntaxError("%s requires a pipe name!\n", argv[i]);
+            pszNmPipeCompile = argv[++i];
+            fRedirCompileStdIn = 0;
+        }
+        else if (!strcmp(argv[i], "-m") || !strcmp(argv[i], "--make-dep-file"))
+        {
+            if (i + 1 >= argc)
+                return SyntaxError("%s requires a filename!\n", argv[i]);
+            pszMakeDepFilename = argv[++i];
+        }
+        else if (!strcmp(argv[i], "--make-dep-fix-case"))
+            fMakeDepFixCase = 1;
+        else if (!strcmp(argv[i], "--make-dep-gen-stubs"))
+            fMakeDepGenStubs = 1;
+        else if (!strcmp(argv[i], "--make-dep-quiet"))
+            fMakeDepQuiet = 1;
+        else if (!strcmp(argv[i], "-O1") || !strcmp(argv[i], "--optimize-1"))
+            fOptimizePreprocessorOutput = 1;
+        else if (!strcmp(argv[i], "-O2") || !strcmp(argv[i], "--optimize-2"))
+            fOptimizePreprocessorOutput = 1 | 2;
+        else if (!strcmp(argv[i], "-p") || !strcmp(argv[i], "--passthru"))
+            fRedirPreCompStdOut = fRedirCompileStdIn = 1;
+        else if (!strcmp(argv[i], "-r") || !strcmp(argv[i], "--redir-stdout"))
+            fRedirPreCompStdOut = 1;
+        else if (!strcmp(argv[i], "-v") || !strcmp(argv[i], "--verbose"))
+            g_cVerbosityLevel++;
+        else if (!strcmp(argv[i], "-q") || !strcmp(argv[i], "--quiet"))
+            g_cVerbosityLevel = 0;
+        else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "-?")
+              || !strcmp(argv[i], "/h") || !strcmp(argv[i], "/?") || !strcmp(argv[i], "/help"))
+        {
+            usage(stdout);
+            return 0;
+        }
+        else if (!strcmp(argv[i], "-V") || !strcmp(argv[i], "--version"))
+        {
+            printf("kObjCache - kBuild version %d.%d.%d ($Revision: 3315 $)\n"
+                   "Copyright (c) 2007-2012 knut st. osmundsen\n",
+                   KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH);
+            return 0;
+        }
+        else
+            return SyntaxError("Doesn't grok '%s'!\n", argv[i]);
+    }
+    if (!pszEntryFile)
+        return SyntaxError("No cache entry filename (-f)!\n");
+    if (!pszTarget)
+        return SyntaxError("No target name (-t)!\n");
+    if (!cArgvCompile)
+        return SyntaxError("No compiler arguments (--kObjCache-cc)!\n");
+    if (!cArgvPreComp)
+        return SyntaxError("No preprocessor arguments (--kObjCache-cc)!\n");
+
+    /*
+     * Calc the cache file name.
+     * It's a bit messy since the extension has to be replaced.
+     */
+    if (!pszCacheFile)
+    {
+        if (!pszCacheDir)
+            return SyntaxError("No cache dir (-d / KOBJCACHE_DIR) and no cache filename!\n");
+        if (!pszCacheName)
+        {
+            psz = (char *)FindFilenameInPath(pszEntryFile);
+            if (!*psz)
+                return SyntaxError("The cache file (-f) specifies a directory / nothing!\n");
+            cch = psz - pszEntryFile;
+            pszCacheName = memcpy(xmalloc(cch + 5), psz, cch + 1);
+            psz = strrchr(pszCacheName, '.');
+            if (!psz || psz <= pszCacheName)
+                psz = (char *)pszCacheName + cch;
+            memcpy(psz, ".koc", sizeof(".koc"));
+        }
+        pszCacheFile = MakePathFromDirAndFile(pszCacheName, pszCacheDir);
+    }
+
+    /*
+     * Create and initialize the two objects we'll be working on.
+     *
+     * We're supposed to be the only ones actually writing to the local file,
+     * so it's perfectly fine to read it here before we lock it. This simplifies
+     * the detection of object name and compiler argument changes.
+     */
+    SetErrorPrefix("kObjCache - %s", FindFilenameInPath(pszCacheFile));
+    pCache = kObjCacheCreate(pszCacheFile);
+
+    pEntry = kOCEntryCreate(pszEntryFile);
+    kOCEntryRead(pEntry);
+    kOCEntrySetCppName(pEntry, pszPreCompName);
+    kOCEntrySetCompileObjName(pEntry, pszObjName);
+    kOCEntrySetCompileArgv(pEntry, papszArgvCompile, cArgvCompile);
+    kOCEntrySetTarget(pEntry, pszTarget);
+    kOCEntrySetPipedMode(pEntry, fRedirPreCompStdOut, fRedirCompileStdIn, pszNmPipeCompile);
+    kOCEntrySetDepFilename(pEntry, pszMakeDepFilename, fMakeDepFixCase, fMakeDepQuiet, fMakeDepGenStubs);
+    kOCEntrySetOptimizations(pEntry, fOptimizePreprocessorOutput);
+
+    /*
+     * Open (& lock) the two files and do validity checks and such.
+     */
+    kObjCacheLock(pCache);
+    if (    kObjCacheIsNew(pCache)
+        &&  kOCEntryNeedsCompiling(pEntry))
+    {
+        /*
+         * Both files are missing/invalid.
+         * Optimize this path as it is frequently used when making a clean build.
+         */
+        kObjCacheUnlock(pCache);
+        InfoMsg(1, "doing full compile\n");
+        kOCEntryPreProcessAndCompile(pEntry, papszArgvPreComp, cArgvPreComp);
+        kObjCacheLock(pCache);
+    }
+    else
+    {
+        /*
+         * Do the preprocess (don't need to lock the cache file for this).
+         */
+        kObjCacheUnlock(pCache);
+        kOCEntryPreProcess(pEntry, papszArgvPreComp, cArgvPreComp);
+
+        /*
+         * Check if we need to recompile. If we do, try see if the is a cache entry first.
+         */
+        kOCEntryCalcRecompile(pEntry);
+        if (kOCEntryNeedsCompiling(pEntry))
+        {
+            PKOCENTRY pUseEntry;
+            kObjCacheLock(pCache);
+            kObjCacheRemoveEntry(pCache, pEntry);
+            pUseEntry = kObjCacheFindMatchingEntry(pCache, pEntry);
+            if (pUseEntry)
+            {
+                InfoMsg(1, "using cache entry '%s'\n", kOCEntryAbsPath(pUseEntry));
+                kOCEntryCopy(pEntry, pUseEntry);
+                kOCEntryDestroy(pUseEntry);
+            }
+            else
+            {
+                kObjCacheUnlock(pCache);
+                InfoMsg(1, "recompiling\n");
+                kOCEntryCompileIt(pEntry);
+                kObjCacheLock(pCache);
+            }
+        }
+        else
+        {
+            InfoMsg(1, "no need to recompile\n");
+            kObjCacheLock(pCache);
+        }
+    }
+
+    /*
+     * Update the cache files.
+     */
+    kObjCacheRemoveEntry(pCache, pEntry);
+    kObjCacheInsertEntry(pCache, pEntry);
+    kOCEntryWrite(pEntry);
+    kObjCacheUnlock(pCache);
+    kObjCacheDestroy(pCache);
+    if (fOptimizePreprocessorOutput)
+    {
+        InfoMsg(3, "g_cbMemMoved=%#x (%d)\n", g_cbMemMoved, g_cbMemMoved);
+        InfoMsg(3, "g_cMemMoves=%#x (%d)\n", g_cMemMoves, g_cMemMoves);
+    }
+
+    return 0;
+}
+
+
+/** @page kObjCache Benchmarks.
+ *
+ * (2007-06-10)
+ *
+ * Mac OS X debug -j 3 cached clobber build (rm -Rf out ; sync ; svn diff ; sync ; sleep 1 ; time kmk -j 3 USE_KOBJCACHE=1):
+ *  real    11m28.811s
+ *  user    13m59.291s
+ *  sys     3m24.590s
+ *
+ * Mac OS X debug -j 3 cached depend build [cdefs.h] (touch include/iprt/cdefs.h ; sync ; svn diff ; sync ; sleep 1 ; time kmk -j 3 USE_KOBJCACHE=1):
+ *  real    1m26.895s
+ *  user    1m26.971s
+ *  sys     0m32.532s
+ *
+ * Mac OS X debug -j 3 cached depend build [err.h] (touch include/iprt/err.h ; sync ; svn diff ; sync ; sleep 1 ; time kmk -j 3 USE_KOBJCACHE=1):
+ *  real    1m18.049s
+ *  user    1m20.462s
+ *  sys     0m27.887s
+ *
+ * Mac OS X release -j 3 cached clobber build (rm -Rf out/darwin.x86/release ; sync ; svn diff ; sync ; sleep 1 ; time kmk -j 3 USE_KOBJCACHE=1 BUILD_TYPE=release):
+ *  real    13m27.751s
+ *  user    18m12.654s
+ *  sys     3m25.170s
+ *
+ * Mac OS X profile -j 3 cached clobber build (rm -Rf out/darwin.x86/profile ; sync ; svn diff ; sync ; sleep 1 ; time kmk -j 3 USE_KOBJCACHE=1 BUILD_TYPE=profile):
+ *  real    9m9.720s
+ *  user    8m53.005s
+ *  sys     2m13.110s
+ *
+ * Mac OS X debug -j 3 clobber build (rm -Rf out/darwin.x86/debug ; sync ; svn diff ; sync ; sleep 1 ; time kmk -j 3 BUILD_TYPE=debug):
+ *  real    10m18.129s
+ *  user    12m52.687s
+ *  sys     2m51.277s
+ *
+ * Mac OS X debug -j 3 debug build [cdefs.h] (touch include/iprt/cdefs.h ; sync ; svn diff ; sync ; sleep 1 ; time kmk -j 3 BUILD_TYPE=debug):
+ *  real    4m46.147s
+ *  user    5m27.087s
+ *  sys     1m11.775s
+ *
+ * Mac OS X debug -j 3 debug build [err.h] (touch include/iprt/cdefs.h ; sync ; svn diff ; sync ; sleep 1 ; time kmk -j 3 BUILD_TYPE=debug):
+ *  real    4m17.572s
+ *  user    5m7.450s
+ *  sys     1m3.450s
+ *
+ * Mac OS X release -j 3 clobber build (rm -Rf out/darwin.x86/release ; sync ; svn diff ; sync ; sleep 1 ; time kmk -j 3 BUILD_TYPE=release):
+ *  real    12m14.742s
+ *  user    17m11.794s
+ *  sys     2m51.454s
+ *
+ * Mac OS X profile -j 3 clobber build (rm -Rf out/darwin.x86/profile ; sync ; svn diff ; sync ; sleep 1 ; time kmk -j 3 BUILD_TYPE=profile):
+ *  real    12m33.821s
+ *  user    17m35.086s
+ *  sys     2m53.312s
+ *
+ * Note. The profile build can pick object files from the release build.
+ * (all with KOBJCACHE_OPTS=-v; which means a bit more output and perhaps a second or two slower.)
+ */
+
diff --git a/src/kWorker/Makefile.kmk b/src/kWorker/Makefile.kmk
new file mode 100644
index 0000000..45a8bf2
--- /dev/null
+++ b/src/kWorker/Makefile.kmk
@@ -0,0 +1,238 @@
+# $Id: Makefile.kmk 3549 2022-01-29 02:41:36Z bird $
+## @file
+# Sub-makefile for kWorker.
+#
+
+#
+# Copyright (c) 2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+
+SUB_DEPTH = ../..
+include $(PATH_KBUILD)/subheader.kmk
+
+
+PROGRAMS += kWorker
+kWorker_TEMPLATE = BIN-STATIC-THREADED
+kWorker_DEFS := KWORKER
+kWorker_DEFS.debug = K_STRICT
+kWorker_DEFS.release = NASSERT
+ifeq ($(USERNAME),bird)
+kWorker_CFLAGS = -W4 -wd4127 -wd4100 -wd4214 -wd4201 -wd4204
+endif
+kWorker_SOURCES = \
+	kWorker.c \
+       ../kmk/kmkbuiltin/kDepObj.c \
+       ../kmk/kmkbuiltin/err.c
+kWorker_INCS = \
+	../kmk/ \
+	../kmk/kmkbuiltin
+kWorker_LIBS = \
+	$(kStuff_1_TARGET) \
+	$(kWorkerLib_1_TARGET)
+include $(KBUILD_PATH)/sdks/WINDDK71.kmk
+kWorker_LIBS.win = \
+	$(TEMPLATE_BIN-STATIC-THREADED_LIBS) \
+	$(PATH_SDK_WINDDK71_LIB_WNET)/ntdll.lib \
+	$(PATH_SDK_WINDDK71_LIB_WNET)/psapi.lib
+kWorker_LDFLAGS.win = \
+	/DYNAMICBASE:NO /FIXED
+kWorker_LDFLAGS.win.x86   = /BASE:0x00010000
+kWorker_LDFLAGS.win.amd64 = /BASE:0x0000000420000000 /STACK:16777216,262144
+
+#kWorker_LDFLAGS.win.x86 = \
+#	/SAFESEH:NO - doesn't help anyone.
+
+
+#
+# Stuff from ../libs.  Need to rebuilt it with static CRT.
+#
+LIBRARIES += kWorkerLib
+kWorkerLib_TEMPLATE = LIB-STATIC-THREADED
+kWorkerLib_DEFPATH = ../lib # Need fix from r2837.
+kWorkerLib_DEFPATH := $(PATH_SUB_CURRENT)/../lib
+kWorkerLib_DEFS := KWORKER
+kWorkerLib_SOURCES = \
+	crc32.c \
+	md5.c \
+       kbuild_version.c \
+       kDep.c
+kWorkerLib_SOURCES.win = \
+	nt_fullpath.c \
+	nt_fullpath_cached.c \
+	quoted_spawn.c \
+       nt/nthlpcore.c \
+       nt/nthlpfs.c \
+       nt/ntdir.c \
+       nt/ntstat.c \
+       nt/ntunlink.c \
+       nt/kFsCache.c \
+       win_get_processor_group_active_mask.c \
+       quote_argv.c \
+	get_codepage.c \
+	is_console.c \
+	maybe_con_write.c \
+	maybe_con_fwrite.c \
+	msc_buffered_printf.c
+kbuild_version.c_DEFS = KBUILD_SVN_REV=$(KBUILD_SVN_REV)
+
+#
+# kStuff library.
+#
+LIBRARIES += kStuff
+kStuff_TEMPLATE = LIB-STATIC-THREADED
+kStuff_DEFS.debug = K_STRICT
+kStuff_INCS = kStuff/include
+kStuff_DEFPATH = $(PATH_ROOT)/src/lib
+
+# kLdr
+kStuff_SOURCES += \
+	kStuff/kLdr/kLdr.c \
+	kStuff/kLdr/kLdrDyld.c \
+	kStuff/kLdr/kLdrDyldFind.c \
+	kStuff/kLdr/kLdrDyldMod.c \
+	kStuff/kLdr/kLdrDyldOS.c \
+	kStuff/kLdr/kLdrDyLdSem.c \
+	kStuff/kLdr/kLdrMod.c \
+	kStuff/kLdr/kLdrModLX.c \
+	kStuff/kLdr/kLdrModMachO.c \
+	kStuff/kLdr/kLdrModNative.c \
+	kStuff/kLdr/kLdrModPE.c
+kLdr_SOURCES.os2 += \
+	kStuff/kLdr/kLdr-os2.c \
+	kStuff/kLdr/kLdrA-os2.asm
+kLdr_SOURCES.win += \
+	kStuff/kLdr/kLdr-win.c
+
+# kRdr
+kStuff_SOURCES += \
+	kStuff/kRdr/kRdr.cpp \
+	kStuff/kRdr/kRdrFile.cpp \
+	kStuff/kRdr/kRdrBuffered.cpp
+
+# kCpu
+kStuff_SOURCES += \
+	kStuff/kCpu/kCpuCompare.c \
+	kStuff/kCpu/kCpuGetArchAndCpu.c
+
+# kHlp (CRT)
+kStuff_SOURCES += \
+	kStuff/kHlp/Generic/kHlpMemPComp.c \
+	kStuff/kHlp/Generic/kHlpMemICompAscii.c \
+	kStuff/kHlp/Generic/kHlpStrPCat.c \
+	kStuff/kHlp/Generic/kHlpStrNPCat.c \
+	kStuff/kHlp/Generic/kHlpStrPComp.c \
+	kStuff/kHlp/Generic/kHlpStrNPComp.c \
+	kStuff/kHlp/Generic/kHlpStrICompAscii.c \
+	kStuff/kHlp/Generic/kHlpStrIPCompAscii.c \
+	kStuff/kHlp/Generic/kHlpStrNICompAscii.c \
+	kStuff/kHlp/Generic/kHlpStrNIPCompAscii.c \
+	kStuff/kHlp/Generic/kHlpStrPCopy.c \
+	kStuff/kHlp/Generic/kHlpStrNLen.c \
+	kStuff/kHlp/Generic/kHlpInt2Ascii.c \
+	\
+	kStuff/kHlp/Generic/kHlpGetEnvUZ.c \
+	\
+	kStuff/kHlp/Generic/kHlpGetExt.c \
+	kStuff/kHlp/Generic/kHlpGetFilename.c \
+	kStuff/kHlp/Generic/kHlpIsFilenameOnly.c \
+	\
+	kStuff/kHlp/Generic/kHlpPage.c \
+	\
+	kStuff/kHlp/CRT/kHlpCRTAlloc.cpp \
+	kStuff/kHlp/CRT/kHlpCRTEnv.cpp \
+	kStuff/kHlp/CRT/kHlpCRTString.cpp
+kStuff_SOURCES.darwin += \
+	kStuff/kHlp/Bare/kHlpSys-darwin.c
+
+
+#
+# A couple of dummy DLLs we use for grabbing LDR TLS entries.
+#
+DLLS += kWorkerTls1K kWorkerTls1K01 kWorkerTls1K02 kWorkerTls1K03 kWorkerTls1K04 kWorkerTls1K05 kWorkerTls1K06 kWorkerTls1K07 \
+      kWorkerTls1K08 kWorkerTls1K09 kWorkerTls1K10 kWorkerTls1K11 kWorkerTls1K12 kWorkerTls1K13 kWorkerTls1K14 kWorkerTls1K15
+kWorkerTls1K_TEMPLATE   = BIN-STATIC-THREADED
+kWorkerTls1K_DEFS       = TLS_SIZE=1024
+kWorkerTls1K_SOURCES    = kWorkerTlsXxxK.c
+kWorkerTls1K_LDFLAGS    = /Entry:DummyDllEntry
+
+kWorkerTls1K01_EXTENDS = kWorkerTls1K
+kWorkerTls1K02_EXTENDS = kWorkerTls1K
+kWorkerTls1K03_EXTENDS = kWorkerTls1K
+kWorkerTls1K04_EXTENDS = kWorkerTls1K
+kWorkerTls1K05_EXTENDS = kWorkerTls1K
+kWorkerTls1K06_EXTENDS = kWorkerTls1K
+kWorkerTls1K07_EXTENDS = kWorkerTls1K
+kWorkerTls1K08_EXTENDS = kWorkerTls1K
+kWorkerTls1K09_EXTENDS = kWorkerTls1K
+kWorkerTls1K10_EXTENDS = kWorkerTls1K
+kWorkerTls1K11_EXTENDS = kWorkerTls1K
+kWorkerTls1K12_EXTENDS = kWorkerTls1K
+kWorkerTls1K13_EXTENDS = kWorkerTls1K
+kWorkerTls1K14_EXTENDS = kWorkerTls1K
+kWorkerTls1K15_EXTENDS = kWorkerTls1K
+
+
+DLLS += kWorkerTls64K kWorkerTls64K01 kWorkerTls64K02 kWorkerTls64K03 kWorkerTls64K04 kWorkerTls64K05 kWorkerTls64K06 kWorkerTls64K07
+kWorkerTls64K_TEMPLATE  = BIN-STATIC-THREADED
+kWorkerTls64K_DEFS      = TLS_SIZE=65536
+kWorkerTls64K_SOURCES   = kWorkerTlsXxxK.c
+kWorkerTls64K_LDFLAGS   = /Entry:DummyDllEntry
+
+kWorkerTls64K01_EXTENDS = kWorkerTls64K
+kWorkerTls64K02_EXTENDS = kWorkerTls64K
+kWorkerTls64K03_EXTENDS = kWorkerTls64K
+kWorkerTls64K04_EXTENDS = kWorkerTls64K
+kWorkerTls64K05_EXTENDS = kWorkerTls64K
+kWorkerTls64K06_EXTENDS = kWorkerTls64K
+kWorkerTls64K07_EXTENDS = kWorkerTls64K
+
+
+DLLS += kWorkerTls128K kWorkerTls128K01 kWorkerTls128K02 kWorkerTls128K03 kWorkerTls128K04 kWorkerTls128K05 kWorkerTls128K06 kWorkerTls128K07
+kWorkerTls128K_TEMPLATE  = BIN-STATIC-THREADED
+kWorkerTls128K_DEFS      = TLS_SIZE=131072
+kWorkerTls128K_SOURCES   = kWorkerTlsXxxK.c
+kWorkerTls128K_LDFLAGS   = /Entry:DummyDllEntry
+
+kWorkerTls128K01_EXTENDS = kWorkerTls128K
+kWorkerTls128K02_EXTENDS = kWorkerTls128K
+kWorkerTls128K03_EXTENDS = kWorkerTls128K
+kWorkerTls128K04_EXTENDS = kWorkerTls128K
+kWorkerTls128K05_EXTENDS = kWorkerTls128K
+kWorkerTls128K06_EXTENDS = kWorkerTls128K
+kWorkerTls128K07_EXTENDS = kWorkerTls128K
+
+
+DLLS += kWorkerTls512K kWorkerTls512K01 kWorkerTls512K02 kWorkerTls512K03 kWorkerTls512K04 kWorkerTls512K05 kWorkerTls512K06 kWorkerTls512K07
+kWorkerTls512K_TEMPLATE = BIN-STATIC-THREADED
+kWorkerTls512K_DEFS     = TLS_SIZE=524288
+kWorkerTls512K_SOURCES  = kWorkerTlsXxxK.c
+kWorkerTls512K_LDFLAGS  = /Entry:DummyDllEntry
+
+kWorkerTls512K01_EXTENDS = kWorkerTls512K
+kWorkerTls512K02_EXTENDS = kWorkerTls512K
+kWorkerTls512K03_EXTENDS = kWorkerTls512K
+kWorkerTls512K04_EXTENDS = kWorkerTls512K
+kWorkerTls512K05_EXTENDS = kWorkerTls512K
+kWorkerTls512K06_EXTENDS = kWorkerTls512K
+kWorkerTls512K07_EXTENDS = kWorkerTls512K
+
+
+include $(KBUILD_PATH)/subfooter.kmk
+
diff --git a/src/kWorker/kWorker.c b/src/kWorker/kWorker.c
new file mode 100644
index 0000000..6351e9d
--- /dev/null
+++ b/src/kWorker/kWorker.c
@@ -0,0 +1,14100 @@
+/* $Id: kWorker.c 3522 2021-12-19 12:11:21Z bird $ */
+/** @file
+ * kWorker - experimental process reuse worker for Windows.
+ *
+ * Note! This module must be linked statically in order to avoid
+ *       accidentally intercepting our own CRT calls.
+ */
+
+/*
+ * Copyright (c) 2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+//#undef NDEBUG
+//#define K_STRICT 1
+//#define KW_LOG_ENABLED
+
+#define PSAPI_VERSION 1
+#include <k/kHlp.h>
+#include <k/kLdr.h>
+
+#include <stdio.h>
+#include <intrin.h>
+#include <setjmp.h>
+#include <ctype.h>
+#include <errno.h>
+#include <process.h>
+
+#include "nt/ntstat.h"
+#include "kbuild_version.h"
+
+#include "nt/ntstuff.h"
+#include "nt/nthlp.h"
+#include <psapi.h>
+
+#include "nt/kFsCache.h"
+#include "nt_fullpath.h"
+#include "win_get_processor_group_active_mask.h"
+#include "quote_argv.h"
+#include "md5.h"
+#include "console.h"
+
+#include "../kmk/kmkbuiltin.h"
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/** @def WITH_TEMP_MEMORY_FILES
+ * Enables temporary memory files for cl.exe.  */
+#define WITH_TEMP_MEMORY_FILES
+
+/** @def WITH_HASH_CACHE
+ * Enables caching of MD5, SHA-1, SHA-256 and SHA-512 hashes for cl.exe.
+ * This prevents wasting time on rehashing common headers each time
+ * they are included. */
+#define WITH_HASH_CACHE
+
+/** @def WITH_CRYPT_CTX_REUSE
+ * Enables reusing crypt contexts.  The Visual C++ compiler always creates a
+ * context which is only used for MD5 and maybe some random bytes (VS 2010).
+ * So, only create it once and add a reference to it instead of creating new
+ * ones.  Saves registry access among other things. */
+#define WITH_CRYPT_CTX_REUSE
+
+/** @def WITH_CONSOLE_OUTPUT_BUFFERING
+ * Enables buffering of all console output as well as removal of annoying
+ * source file echo by cl.exe. */
+#define WITH_CONSOLE_OUTPUT_BUFFERING
+
+/** @def WITH_STD_OUT_ERR_BUFFERING
+ * Enables buffering of standard output and standard error buffer as well as
+ * removal of annoying source file echo by cl.exe. */
+#define WITH_STD_OUT_ERR_BUFFERING
+
+/** @def WITH_LOG_FILE
+ * Log to file instead of stderr. */
+#define WITH_LOG_FILE
+
+/** @def WITH_HISTORY
+ * Keep history of the last jobs.  For debugging.  */
+#define WITH_HISTORY
+
+/** @def WITH_FIXED_VIRTUAL_ALLOCS
+ * Whether to pre allocate memory for known fixed VirtualAlloc calls (currently
+ * there is only one, but an important one, from cl.exe).
+ */
+#if K_ARCH == K_ARCH_X86_32
+# define WITH_FIXED_VIRTUAL_ALLOCS
+#endif
+
+/** @def WITH_PCH_CACHING
+ * Enables read caching of precompiled header files. */
+#if K_ARCH_BITS >= 64
+# define WITH_PCH_CACHING
+#endif
+
+
+#ifndef NDEBUG
+# define KW_LOG_ENABLED
+#endif
+
+/** @def KW_LOG
+ * Generic logging.
+ * @param a     Argument list for kwDbgPrintf  */
+#ifdef KW_LOG_ENABLED
+# define KW_LOG(a) kwDbgPrintf a
+#else
+# define KW_LOG(a) do { } while (0)
+#endif
+
+/** @def KWLDR_LOG
+ * Loader related logging.
+ * @param a     Argument list for kwDbgPrintf  */
+#ifdef KW_LOG_ENABLED
+# define KWLDR_LOG(a) kwDbgPrintf a
+#else
+# define KWLDR_LOG(a) do { } while (0)
+#endif
+
+
+/** @def KWFS_LOG
+ * FS cache logging.
+ * @param a     Argument list for kwDbgPrintf  */
+#ifdef KW_LOG_ENABLED
+# define KWFS_LOG(a) kwDbgPrintf a
+#else
+# define KWFS_LOG(a) do { } while (0)
+#endif
+
+/** @def KWOUT_LOG
+ * Output related logging.
+ * @param a     Argument list for kwDbgPrintf  */
+#ifdef KW_LOG_ENABLED
+# define KWOUT_LOG(a) kwDbgPrintf a
+#else
+# define KWOUT_LOG(a) do { } while (0)
+#endif
+
+/** @def KWCRYPT_LOG
+ * FS cache logging.
+ * @param a     Argument list for kwDbgPrintf  */
+#ifdef KW_LOG_ENABLED
+# define KWCRYPT_LOG(a) kwDbgPrintf a
+#else
+# define KWCRYPT_LOG(a) do { } while (0)
+#endif
+
+/** Converts a windows handle to a handle table index.
+ * @note We currently just mask off the 31th bit, and do no shifting or anything
+ *     else to create an index of the handle.
+ * @todo consider shifting by 2 or 3. */
+#define KW_HANDLE_TO_INDEX(a_hHandle)   ((KUPTR)(a_hHandle) & ~(KUPTR)KU32_C(0x8000000))
+/** Maximum handle value we can deal with.   */
+#define KW_HANDLE_MAX                   0x20000
+
+/** Max temporary file size (memory backed).  */
+#if K_ARCH_BITS >= 64
+# define KWFS_TEMP_FILE_MAX             (256*1024*1024)
+#else
+# define KWFS_TEMP_FILE_MAX             (64*1024*1024)
+#endif
+
+/** Marks unfinished code.  */
+#if 1
+# define KWFS_TODO()    do { kwErrPrintf("\nHit TODO on line %u in %s!\n", __LINE__, __FUNCTION__); fflush(stderr); __debugbreak(); } while (0)
+#else
+# define KWFS_TODO()    do { kwErrPrintf("\nHit TODO on line %u in %s!\n", __LINE__, __FUNCTION__); fflush(stderr); } while (0)
+#endif
+
+/** User data key for tools. */
+#define KW_DATA_KEY_TOOL                (~(KUPTR)16381)
+/** User data key for a cached file. */
+#define KW_DATA_KEY_CACHED_FILE         (~(KUPTR)65521)
+
+/** String constant comma length.   */
+#define TUPLE(a_sz)                     a_sz, sizeof(a_sz) - 1
+
+
+/**
+ * Generate CRT slot wrapper functions.
+ */
+#define CRT_SLOT_FUNCTION_WRAPPER(a_RetTypeAndCallConv, a_FnName, a_aArgsDecl, a_aArgCall) \
+    static a_RetTypeAndCallConv a_FnName##00 a_aArgsDecl { const unsigned iCrtSlot =  0; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##01 a_aArgsDecl { const unsigned iCrtSlot =  1; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##02 a_aArgsDecl { const unsigned iCrtSlot =  2; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##03 a_aArgsDecl { const unsigned iCrtSlot =  3; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##04 a_aArgsDecl { const unsigned iCrtSlot =  4; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##05 a_aArgsDecl { const unsigned iCrtSlot =  5; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##06 a_aArgsDecl { const unsigned iCrtSlot =  6; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##07 a_aArgsDecl { const unsigned iCrtSlot =  7; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##08 a_aArgsDecl { const unsigned iCrtSlot =  8; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##09 a_aArgsDecl { const unsigned iCrtSlot =  9; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##10 a_aArgsDecl { const unsigned iCrtSlot = 10; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##11 a_aArgsDecl { const unsigned iCrtSlot = 11; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##12 a_aArgsDecl { const unsigned iCrtSlot = 12; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##13 a_aArgsDecl { const unsigned iCrtSlot = 13; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##14 a_aArgsDecl { const unsigned iCrtSlot = 14; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##15 a_aArgsDecl { const unsigned iCrtSlot = 15; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##16 a_aArgsDecl { const unsigned iCrtSlot = 16; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##17 a_aArgsDecl { const unsigned iCrtSlot = 17; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##18 a_aArgsDecl { const unsigned iCrtSlot = 18; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##19 a_aArgsDecl { const unsigned iCrtSlot = 19; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##20 a_aArgsDecl { const unsigned iCrtSlot = 20; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##21 a_aArgsDecl { const unsigned iCrtSlot = 21; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##22 a_aArgsDecl { const unsigned iCrtSlot = 22; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##23 a_aArgsDecl { const unsigned iCrtSlot = 23; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##24 a_aArgsDecl { const unsigned iCrtSlot = 24; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##25 a_aArgsDecl { const unsigned iCrtSlot = 25; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##26 a_aArgsDecl { const unsigned iCrtSlot = 26; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##27 a_aArgsDecl { const unsigned iCrtSlot = 27; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##28 a_aArgsDecl { const unsigned iCrtSlot = 28; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##29 a_aArgsDecl { const unsigned iCrtSlot = 29; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##30 a_aArgsDecl { const unsigned iCrtSlot = 30; return a_FnName##_wrapped a_aArgCall; } \
+    static a_RetTypeAndCallConv a_FnName##31 a_aArgsDecl { const unsigned iCrtSlot = 31; return a_FnName##_wrapped a_aArgCall; } \
+    static const KUPTR a_FnName[] = \
+    { \
+        (KUPTR)a_FnName##00, \
+        (KUPTR)a_FnName##01, \
+        (KUPTR)a_FnName##02, \
+        (KUPTR)a_FnName##03, \
+        (KUPTR)a_FnName##04, \
+        (KUPTR)a_FnName##05, \
+        (KUPTR)a_FnName##06, \
+        (KUPTR)a_FnName##07, \
+        (KUPTR)a_FnName##08, \
+        (KUPTR)a_FnName##09, \
+        (KUPTR)a_FnName##10, \
+        (KUPTR)a_FnName##11, \
+        (KUPTR)a_FnName##12, \
+        (KUPTR)a_FnName##13, \
+        (KUPTR)a_FnName##14, \
+        (KUPTR)a_FnName##15, \
+        (KUPTR)a_FnName##16, \
+        (KUPTR)a_FnName##17, \
+        (KUPTR)a_FnName##18, \
+        (KUPTR)a_FnName##19, \
+        (KUPTR)a_FnName##20, \
+        (KUPTR)a_FnName##21, \
+        (KUPTR)a_FnName##22, \
+        (KUPTR)a_FnName##23, \
+        (KUPTR)a_FnName##24, \
+        (KUPTR)a_FnName##25, \
+        (KUPTR)a_FnName##26, \
+        (KUPTR)a_FnName##27, \
+        (KUPTR)a_FnName##28, \
+        (KUPTR)a_FnName##29, \
+        (KUPTR)a_FnName##30, \
+        (KUPTR)a_FnName##31, \
+    }
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef enum KWLOCATION
+{
+    KWLOCATION_INVALID = 0,
+    KWLOCATION_EXE_DIR,
+    KWLOCATION_IMPORTER_DIR,
+    KWLOCATION_SYSTEM32,
+    KWLOCATION_UNKNOWN_NATIVE,
+    KWLOCATION_UNKNOWN,
+} KWLOCATION;
+
+typedef enum KWMODSTATE
+{
+    KWMODSTATE_INVALID = 0,
+    KWMODSTATE_NEEDS_BITS,
+    KWMODSTATE_NEEDS_INIT,
+    KWMODSTATE_BEING_INITED,
+    KWMODSTATE_INIT_FAILED,
+    KWMODSTATE_READY,
+} KWMODSTATE;
+
+typedef struct KWMODULE *PKWMODULE;
+typedef struct KWMODULE
+{
+    /** Pointer to the next image withe the same hash. */
+    PKWMODULE           pNextHash;
+    /** Pointer to the next image in the global list. */
+    PKWMODULE           pNextList;
+    /** The normalized path to the image. */
+    const char         *pszPath;
+    /** The hash of the program path. */
+    KU32                uHashPath;
+    /** Number of references. */
+    KU32                cRefs;
+    /** UTF-16 version of pszPath. */
+    const wchar_t      *pwszPath;
+    /** The offset of the filename in pszPath. */
+    KU16                offFilename;
+    /** The offset of the filename in pwszPath. */
+    KU16                offFilenameW;
+    /** Set if executable. */
+    KBOOL               fExe;
+    /** Set if native module entry. */
+    KBOOL               fNative;
+    /** Loader module handle. */
+    PKLDRMOD            pLdrMod;
+    /** The windows module handle. */
+    HMODULE             hOurMod;
+    /** Parent (real) module if this is a virtual API module (api-ms-*.dll or
+     * ext-ms-*.dll). Referenced. */
+    PKWMODULE           pVirtualApiMod;
+    /** The of the loaded image bits. */
+    KSIZE               cbImage;
+    /** The CRT slot for this module, if applicable (KU8_MAX when not). */
+    KU8                 iCrtSlot;
+    /** Loop prevention when working the tree. */
+    KBOOL               fVisited;
+    /** HACK: Set if re-init is needed (fReInitOnMsPdbSrvEndpointChange). */
+    KBOOL               fNeedReInit;
+    /** HACK: Reinit when _MSPDBSRV_ENDPOINT_ changes, K_FALSE if not applicable.
+     * 1 if applicable but not yet used, 2 if used and have pszMsPdbSrvEndpoint. */
+    KU8                 fReInitOnMsPdbSrvEndpointChange;
+    /** HACK: The old _MSPDBSRV_ENDPOINT_ value. */
+    char               *pszMsPdbSrvEndpoint;
+
+    union
+    {
+        /** Data for a manually loaded image. */
+        struct
+        {
+            /** Where we load the image. */
+            KU8                *pbLoad;
+            /** Virgin copy of the image. */
+            KU8                *pbCopy;
+            /** Ldr pvBits argument.  This is NULL till we've successfully resolved
+             *  the imports. */
+            void               *pvBits;
+            /** The state. */
+            KWMODSTATE          enmState;
+            /** The re-init state. */
+            KWMODSTATE          enmReInitState;
+#if defined(KBUILD_OS_WINDOWS) && defined(KBUILD_ARCH_AMD64)
+            /** The number of entries in the table. */
+            KU32                cFunctions;
+            /** The function table address (in the copy). */
+            PRUNTIME_FUNCTION   paFunctions;
+            /** Set if we've already registered a function table already. */
+            KBOOL               fRegisteredFunctionTable;
+#endif
+            /** Set if we share memory with other executables. */
+            KBOOL               fUseLdBuf;
+            /** Set after the first whole image copy is done. */
+            KBOOL               fCanDoQuick;
+            /** Number of quick copy chunks. */
+            KU8                 cQuickCopyChunks;
+            /** Number of quick zero chunks. */
+            KU8                 cQuickZeroChunks;
+            /** Quicker image copy instructions that skips non-writable parts when
+             * possible.  Need to check fCanDoQuick, fUseLdBuf and previous executable
+             * image. */
+            struct
+            {
+                /** The copy destination.   */
+                KU8            *pbDst;
+                /** The copy source.   */
+                KU8 const      *pbSrc;
+                /** How much to copy. */
+                KSIZE           cbToCopy;
+            } aQuickCopyChunks[3];
+            /** For handling BSS and zero alignment padding when using aQuickCopyChunks. */
+            struct
+            {
+                /** Where to start zeroing. */
+                KU8            *pbDst;
+                /** How much to zero. */
+                KSIZE           cbToZero;
+            } aQuickZeroChunks[3];
+
+            /** Pointer to g_abInitData of the kWorkerTlsXxxK.c instance.
+             * This member is set by kwLdrTlsAllocationHook. */
+            KU8                *pabTlsInitData;
+            /** Pointer to the g_pvWorkerModule variable in kWorkerTlsXxxK.c (our instance
+             * of it).  This member is set by kwLdrTlsAllocationHook.   Used by our
+             * destructor to prevent after-free references. */
+            PKWMODULE          *ppTlsWorkerModuleVar;
+            /** TLS index if one was allocated, otherwise KU32_MAX.
+             * This member is set by kwLdrTlsAllocationHook. */
+            KU32                idxTls;
+            /** Offset (RVA) of the TLS initialization data. */
+            KU32                offTlsInitData;
+            /** Number of bytes of TLS initialization data. */
+            KU32                cbTlsInitData;
+            /** Number of allocated bytes for TLS. */
+            KU32                cbTlsAlloc;
+            /** Number of TLS callbacks. */
+            KU32                cTlsCallbacks;
+            /** Offset (RVA) of the TLS callback table. */
+            KU32                offTlsCallbacks;
+
+            /** Number of imported modules. */
+            KSIZE               cImpMods;
+            /** Import array (variable size). */
+            PKWMODULE           apImpMods[1];
+        } Manual;
+    } u;
+} KWMODULE;
+
+
+typedef struct KWDYNLOAD *PKWDYNLOAD;
+typedef struct KWDYNLOAD
+{
+    /** Pointer to the next in the list. */
+    PKWDYNLOAD          pNext;
+
+    /** The module handle we present to the application.
+     * This is the LoadLibraryEx return value for special modules and the
+     * KWMODULE.hOurMod value for the others. */
+    HMODULE             hmod;
+
+    /** The module for non-special resource stuff, NULL if special. */
+    PKWMODULE           pMod;
+
+    /** The length of the LoadLibary filename. */
+    KSIZE               cchRequest;
+    /** The LoadLibrary filename. */
+    char                szRequest[1];
+} KWDYNLOAD;
+
+
+/**
+ * GetModuleHandle cache for system modules frequently queried.
+ */
+typedef struct KWGETMODULEHANDLECACHE
+{
+    const char     *pszName;
+    const wchar_t  *pwszName;
+    KU8             cchName;
+    KU8             cwcName;
+    KBOOL           fAlwaysPresent;
+    HANDLE          hmod;
+} KWGETMODULEHANDLECACHE;
+typedef KWGETMODULEHANDLECACHE *PKWGETMODULEHANDLECACHE;
+
+
+/** One TLS DLL. */
+typedef struct KWTLSDLL
+{
+    const wchar_t  *pwszName;   /**< The DLL name. */
+    KBOOL           fUsed;      /**< Set if used, clear if not. */
+} KWTLSDLL;
+typedef KWTLSDLL *PKWTLSDLL;
+
+/**
+ * TLS DLL tracker.
+ */
+typedef struct KWTLSDLLENTRY
+{
+    KU32            cbTls;      /**< Max TLS size. */
+    KU32            cDlls;      /**< Number of DLLs we ship (paDlls). */
+    PKWTLSDLL       paDlls;     /**< Array of DLLs we ship. */
+} KWTLSDLLENTRY;
+typedef KWTLSDLLENTRY *PKWTLSDLLENTRY;
+
+
+/**
+ * A cached file.
+ */
+typedef struct KFSWCACHEDFILE
+{
+    /** The user data core. */
+    KFSUSERDATA         Core;
+
+    /** Cached file handle. */
+    HANDLE              hCached;
+    /** Cached file section handle. */
+    HANDLE              hSection;
+    /** Cached file content. */
+    KU8                *pbCached;
+    /** The file size. */
+    KU32                cbCached;
+#ifdef WITH_HASH_CACHE
+    /** Set if we've got a valid MD5 hash in abMd5Digest. */
+    KBOOL               fValidMd5;
+    /** Set if we've got a valid SHA-1 hash in abMd5Digest. */
+    KBOOL               fValidSha1;
+    /** Set if we've got a valid SHA-256 hash in abMd5Digest. */
+    KBOOL               fValidSha256;
+    /** Set if we've got a valid SHA-512 hash in abMd5Digest. */
+    KBOOL               fValidSha512;
+    /** The MD5 digest if fValidMd5 is set. */
+    KU8                 abMd5Digest[16];
+    /** The SHA-1 digest if fValidSha1 is set. */
+    KU8                 abSha1Digest[20];
+    /** The SHA-256 digest if fValidSha256 is set. */
+    KU8                 abSha256Digest[32];
+    /** The SHA-512 digest if fValidSha256 is set. */
+    KU8                 abSha512Digest[64];
+#endif
+
+    /** Circular self reference. Prevents the object from ever going away and
+     * keeps it handy for debugging. */
+    PKFSOBJ             pFsObj;
+    /** The file path (for debugging).   */
+    char                szPath[1];
+} KFSWCACHEDFILE;
+/** Pointer to a cached filed. */
+typedef KFSWCACHEDFILE *PKFSWCACHEDFILE;
+
+#ifdef WITH_HASH_CACHE
+
+/** Pointer to a MD5 hash instance. */
+typedef struct KWCRYPTHASH *PKWCRYPTHASH;
+/**
+ * A MD5 hash instance.
+ */
+typedef struct KWCRYPTHASH
+{
+    /** The magic value. */
+    KUPTR               uMagic;
+    /** Pointer to the next hash handle. */
+    PKWCRYPTHASH        pNext;
+    /** The cached file we've associated this handle with. */
+    PKFSWCACHEDFILE     pCachedFile;
+    /** The number of bytes we've hashed. */
+    KU32                cbHashed;
+    /** Set if this has gone wrong. */
+    KBOOL               fGoneBad;
+    /** Set if we've already finalized the digest. */
+    KBOOL               fFinal;
+    /** If in fallback mode. */
+    HCRYPTHASH          hFallback;
+    /** The algorithm. */
+    ALG_ID              idAlg;
+    /** The hash name. */
+    const char         *pszAlgName;
+    /** The digest size. */
+    KU32                cbDigest;
+    /** The finalized digest. */
+    KU8                 abDigest[64];
+} KWCRYPTHASH;
+/** Magic value for KWCRYPTHASH::uMagic (Les McCann). */
+# define KWCRYPTHASH_MAGIC    KUPTR_C(0x19350923)
+
+#endif /* WITH_HASH_CACHE */
+#ifdef WITH_TEMP_MEMORY_FILES
+
+typedef struct KWFSTEMPFILESEG *PKWFSTEMPFILESEG;
+typedef struct KWFSTEMPFILESEG
+{
+    /** File offset of data. */
+    KU32                offData;
+    /** The size of the buffer pbData points to. */
+    KU32                cbDataAlloc;
+    /** The segment data. */
+    KU8                *pbData;
+} KWFSTEMPFILESEG;
+
+typedef struct KWFSTEMPFILE *PKWFSTEMPFILE;
+typedef struct KWFSTEMPFILE
+{
+    /** Pointer to the next temporary file for this run. */
+    PKWFSTEMPFILE       pNext;
+    /** The UTF-16 path. (Allocated after this structure.)  */
+    const wchar_t      *pwszPath;
+    /** The path length. */
+    KU16                cwcPath;
+    /** Number of active handles using this file/mapping (<= 2). */
+    KU8                 cActiveHandles;
+    /** Number of active mappings (mapped views) (0 or 1). */
+    KU8                 cMappings;
+    /** The amount of space allocated in the segments. */
+    KU32                cbFileAllocated;
+    /** The current file size. */
+    KU32                cbFile;
+    /** The number of segments. */
+    KU32                cSegs;
+    /** Segments making up the file. */
+    PKWFSTEMPFILESEG    paSegs;
+} KWFSTEMPFILE;
+
+#endif /* WITH_TEMP_MEMORY_FILES */
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+
+/**
+ * Console line buffer or output full buffer.
+ */
+typedef struct KWOUTPUTSTREAMBUF
+{
+    /** The main output handle. */
+    HANDLE              hOutput;
+    /** Our backup handle. */
+    HANDLE              hBackup;
+    /** Set if this is a console handle and we're in line buffered mode.
+     * When clear, we may buffer multiple lines, though try flush on line
+     * boundraries when ever possible. */
+    KBOOL               fIsConsole;
+    /** Compressed GetFileType result. */
+    KU8                 fFileType;
+    KU8                 abPadding[2];
+    union
+    {
+        /** Line buffer mode (fIsConsole == K_TRUE). */
+        struct
+        {
+            /** Amount of pending console output in wchar_t's. */
+            KU32                cwcBuf;
+            /** The allocated buffer size.   */
+            KU32                cwcBufAlloc;
+            /** Pending console output. */
+            wchar_t            *pwcBuf;
+        } Con;
+        /** Fully buffered mode (fIsConsole == K_FALSE). */
+        struct
+        {
+            /** Amount of pending output (in chars). */
+            KU32                cchBuf;
+#ifdef WITH_STD_OUT_ERR_BUFFERING
+            /** The allocated buffer size (in chars).   */
+            KU32                cchBufAlloc;
+            /** Pending output. */
+            char               *pchBuf;
+#endif
+        } Fully;
+    } u;
+} KWOUTPUTSTREAMBUF;
+/** Pointer to a console line buffer. */
+typedef KWOUTPUTSTREAMBUF *PKWOUTPUTSTREAMBUF;
+
+/**
+ * Combined console buffer of complete lines.
+ */
+typedef struct KWCONSOLEOUTPUT
+{
+    /** The console output handle.
+     * INVALID_HANDLE_VALUE if we haven't got a console and shouldn't be doing any
+     * combined output buffering. */
+    HANDLE              hOutput;
+    /** The current code page for the console. */
+    KU32                uCodepage;
+    /** Amount of pending console output in wchar_t's. */
+    KU32                cwcBuf;
+    /** Number of times we've flushed it in any way (for cl.exe hack). */
+    KU32                cFlushes;
+    /** Pending console output. */
+    wchar_t             wszBuf[8192];
+} KWCONSOLEOUTPUT;
+/** Pointer to a combined console buffer. */
+typedef KWCONSOLEOUTPUT *PKWCONSOLEOUTPUT;
+
+#endif /* WITH_CONSOLE_OUTPUT_BUFFERING */
+
+/** Handle type.   */
+typedef enum KWHANDLETYPE
+{
+    KWHANDLETYPE_INVALID = 0,
+    KWHANDLETYPE_FSOBJ_READ_CACHE,
+    KWHANDLETYPE_FSOBJ_READ_CACHE_MAPPING,
+#ifdef WITH_TEMP_MEMORY_FILES
+    KWHANDLETYPE_TEMP_FILE,
+    KWHANDLETYPE_TEMP_FILE_MAPPING,
+#endif
+    KWHANDLETYPE_OUTPUT_BUF
+} KWHANDLETYPE;
+
+/** Handle data. */
+typedef struct KWHANDLE
+{
+    KWHANDLETYPE        enmType;
+    /** Number of references   */
+    KU32                cRefs;
+    /** The current file offset. */
+    KU32                offFile;
+    /** Handle access. */
+    KU32                dwDesiredAccess;
+    /** The handle. */
+    HANDLE              hHandle;
+    /** The current owner (GetCurrentThreadId). */
+    KU32                tidOwner;
+
+    /** Type specific data. */
+    union
+    {
+        /** The file system object.   */
+        PKFSWCACHEDFILE     pCachedFile;
+#ifdef WITH_TEMP_MEMORY_FILES
+        /** Temporary file handle or mapping handle. */
+        PKWFSTEMPFILE       pTempFile;
+#endif
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+        /** Buffered output stream. */
+        PKWOUTPUTSTREAMBUF  pOutBuf;
+#endif
+    } u;
+} KWHANDLE;
+typedef KWHANDLE *PKWHANDLE;
+
+/**
+ * Tracking one of our memory mappings.
+ */
+typedef struct KWMEMMAPPING
+{
+    /** Number of references. */
+    KU32                cRefs;
+    /** The mapping type (KWHANDLETYPE_FSOBJ_READ_CACHE_MAPPING or
+     *  KWHANDLETYPE_TEMP_FILE_MAPPING). */
+    KWHANDLETYPE        enmType;
+    /** The mapping address. */
+    PVOID               pvMapping;
+    /** Type specific data. */
+    union
+    {
+        /** The file system object.   */
+        PKFSWCACHEDFILE     pCachedFile;
+#ifdef WITH_TEMP_MEMORY_FILES
+        /** Temporary file handle or mapping handle. */
+        PKWFSTEMPFILE       pTempFile;
+#endif
+    } u;
+} KWMEMMAPPING;
+/** Pointer to a memory mapping tracker. */
+typedef KWMEMMAPPING *PKWMEMMAPPING;
+
+
+/** Pointer to a VirtualAlloc tracker entry. */
+typedef struct KWVIRTALLOC *PKWVIRTALLOC;
+/**
+ * Tracking an VirtualAlloc allocation.
+ */
+typedef struct KWVIRTALLOC
+{
+    PKWVIRTALLOC        pNext;
+    void               *pvAlloc;
+    KSIZE               cbAlloc;
+    /** This is KU32_MAX if not a preallocated chunk. */
+    KU32                idxPreAllocated;
+} KWVIRTALLOC;
+
+
+/** Pointer to a heap (HeapCreate) tracker entry. */
+typedef struct KWHEAP *PKWHEAP;
+/**
+ * Tracking an heap (HeapCreate)
+ */
+typedef struct KWHEAP
+{
+    PKWHEAP             pNext;
+    HANDLE              hHeap;
+} KWHEAP;
+
+
+/** Pointer to a FlsAlloc/TlsAlloc tracker entry. */
+typedef struct KWLOCALSTORAGE *PKWLOCALSTORAGE;
+/**
+ * Tracking an FlsAlloc/TlsAlloc index.
+ */
+typedef struct KWLOCALSTORAGE
+{
+    PKWLOCALSTORAGE     pNext;
+    KU32                idx;
+} KWLOCALSTORAGE;
+
+
+/** Pointer to an at exit callback record */
+typedef struct KWEXITCALLACK *PKWEXITCALLACK;
+/**
+ * At exit callback record.
+ */
+typedef struct KWEXITCALLACK
+{
+    PKWEXITCALLACK      pNext;
+    _onexit_t           pfnCallback;
+    /** At exit doesn't have an exit code. */
+    KBOOL               fAtExit;
+} KWEXITCALLACK;
+
+
+typedef enum KWTOOLTYPE
+{
+    KWTOOLTYPE_INVALID = 0,
+    KWTOOLTYPE_SANDBOXED,
+    KWTOOLTYPE_WATCOM,
+    KWTOOLTYPE_EXEC,
+    KWTOOLTYPE_END
+} KWTOOLTYPE;
+
+typedef enum KWTOOLHINT
+{
+    KWTOOLHINT_INVALID = 0,
+    KWTOOLHINT_NONE,
+    KWTOOLHINT_VISUAL_CPP_CL,
+    KWTOOLHINT_VISUAL_CPP_LINK,
+    KWTOOLHINT_END
+} KWTOOLHINT;
+
+
+/**
+ * A kWorker tool.
+ */
+typedef struct KWTOOL
+{
+    /** The user data core structure. */
+    KFSUSERDATA         Core;
+
+    /** The normalized path to the program. */
+    const char         *pszPath;
+    /** UTF-16 version of pszPath. */
+    wchar_t const      *pwszPath;
+    /** The kind of tool. */
+    KWTOOLTYPE          enmType;
+
+    union
+    {
+        struct
+        {
+            /** The main entry point. */
+            KUPTR       uMainAddr;
+            /** The executable. */
+            PKWMODULE   pExe;
+            /** List of dynamically loaded modules.
+             * These will be kept loaded till the tool is destroyed (if we ever do that). */
+            PKWDYNLOAD  pDynLoadHead;
+            /** Module array sorted by hOurMod. */
+            PKWMODULE  *papModules;
+            /** Number of entries in papModules. */
+            KU32        cModules;
+
+            /** Tool hint (for hacks and such). */
+            KWTOOLHINT  enmHint;
+        } Sandboxed;
+    } u;
+} KWTOOL;
+/** Pointer to a tool. */
+typedef struct KWTOOL *PKWTOOL;
+
+
+typedef struct KWSANDBOX *PKWSANDBOX;
+typedef struct KWSANDBOX
+{
+    /** Jump buffer (first for alignment reasons). */
+    jmp_buf     JmpBuf;
+    /** The tool currently running in the sandbox. */
+    PKWTOOL     pTool;
+    /** The thread ID of the main thread (owner of JmpBuf). */
+    DWORD       idMainThread;
+    /** Copy of the NT TIB of the main thread. */
+    NT_TIB      TibMainThread;
+    /** The NT_TIB::ExceptionList value inside the try case.
+     * We restore this prior to the longjmp.  */
+    void       *pOutXcptListHead;
+    /** The exit code in case of longjmp.   */
+    int         rcExitCode;
+    /** Set if we're running. */
+    KBOOL       fRunning;
+    /** Whether to disable caching of ".pch" files. */
+    KBOOL       fNoPchCaching;
+
+    /** The command line.   */
+    char       *pszCmdLine;
+    /** The UTF-16 command line. */
+    wchar_t    *pwszCmdLine;
+    /** Number of arguments in papszArgs. */
+    int         cArgs;
+    /** The argument vector. */
+    char      **papszArgs;
+    /** The argument vector. */
+    wchar_t   **papwszArgs;
+
+    /** The _pgmptr msvcrt variable.  */
+    char       *pgmptr;
+    /** The _wpgmptr msvcrt variable. */
+    wchar_t    *wpgmptr;
+
+    /** The _initenv msvcrt variable. */
+    char      **initenv;
+    /** The _winitenv msvcrt variable. */
+    wchar_t   **winitenv;
+
+    /** Size of the array we've allocated (ASSUMES nobody messes with it!). */
+    KSIZE       cEnvVarsAllocated;
+    /** The _environ msvcrt variable. */
+    char      **environ;
+    /** The _wenviron msvcrt variable. */
+    wchar_t   **wenviron;
+    /** The shadow _environ msvcrt variable. */
+    char      **papszEnvVars;
+    /** The shadow _wenviron msvcrt variable. */
+    wchar_t   **papwszEnvVars;
+
+
+    /** Critical section protecting the below handle members below.
+     * @note Does not protect the individual handles.  */
+    CRITICAL_SECTION HandlesLock;
+    /** Handle table. */
+    PKWHANDLE      *papHandles;
+    /** Size of the handle table. */
+    KU32            cHandles;
+    /** Number of active handles in the table. */
+    KU32            cActiveHandles;
+    /** Number of handles in the handle table that will not be freed.   */
+    KU32            cFixedHandles;
+    /** Total number of leaked handles. */
+    KU32            cLeakedHandles;
+
+    /** Number of active memory mappings in paMemMappings. */
+    KU32            cMemMappings;
+    /** The allocated size of paMemMappings. */
+    KU32            cMemMappingsAlloc;
+    /** Memory mappings (MapViewOfFile / UnmapViewOfFile). */
+    PKWMEMMAPPING   paMemMappings;
+
+#ifdef WITH_TEMP_MEMORY_FILES
+    /** Head of the list of temporary file. */
+    PKWFSTEMPFILE   pTempFileHead;
+#endif
+
+    /** Critical section protecting pVirtualAllocHead. */
+    CRITICAL_SECTION VirtualAllocLock;
+    /** Head of the virtual alloc allocations. */
+    PKWVIRTALLOC    pVirtualAllocHead;
+    /** Head of the heap list (HeapCreate).
+     * This is only done from images we forcibly restore.  */
+    PKWHEAP         pHeapHead;
+    /** Head of the FlsAlloc indexes. */
+    PKWLOCALSTORAGE pFlsAllocHead;
+    /** Head of the TlsAlloc indexes. */
+    PKWLOCALSTORAGE pTlsAllocHead;
+
+    /** The at exit callback head.
+     * This is only done from images we forcibly restore.  */
+    PKWEXITCALLACK  pExitCallbackHead;
+
+    MY_UNICODE_STRING SavedCommandLine;
+
+#ifdef WITH_HASH_CACHE
+    /** The crypto provider instance we use for hashes. */
+    HCRYPTPROV      hCryptProvRsa;
+    /** The crypto provider instance we use for hashes. */
+    HCRYPTPROV      hCryptProvAes;
+    /** List of crypto hash instances. */
+    PKWCRYPTHASH    pHashHead;
+    /** ReadFile sets these while CryptHashData claims and clears them.
+     *
+     * This is part of the heuristics we use for MD5/SHA1/SHA256 caching for header
+     * files. The observed pattern is that c1.dll/c1xx.dll first reads a chunk of a
+     * source or header, then passes the same buffer and read byte count to
+     * CryptHashData.
+     */
+    struct
+    {
+        /** The cached file last read from. */
+        PKFSWCACHEDFILE pCachedFile;
+        /** The file offset of the last cached read. */
+        KU32            offRead;
+        /** The number of bytes read last. */
+        KU32            cbRead;
+        /** The buffer pointer of the last read. */
+        void           *pvRead;
+    } LastHashRead;
+#endif
+
+#ifdef WITH_CRYPT_CTX_REUSE
+    /** Reusable crypt contexts.  */
+    struct
+    {
+        /** The creation provider type.  */
+        KU32            dwProvType;
+        /** The creation flags. */
+        KU32            dwFlags;
+        /** The length of the container name. */
+        KU32            cwcContainer;
+        /** The length of the provider name. */
+        KU32            cwcProvider;
+        /** The container name string. */
+        wchar_t        *pwszContainer;
+        /** The provider name string. */
+        wchar_t        *pwszProvider;
+        /** The context handle. */
+        HCRYPTPROV      hProv;
+    }                   aCryptCtxs[4];
+    /** Number of reusable crypt conexts in aCryptCtxs. */
+    KU32                cCryptCtxs;
+#endif
+
+
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+    /** The internal standard output handle. */
+    KWHANDLE            HandleStdOut;
+    /** The internal standard error handle. */
+    KWHANDLE            HandleStdErr;
+    /** Standard output (and whatever else) buffer. */
+    KWOUTPUTSTREAMBUF   StdOut;
+    /** Standard error buffer. */
+    KWOUTPUTSTREAMBUF   StdErr;
+    /** Combined buffer of completed lines. */
+    KWCONSOLEOUTPUT     Combined;
+#endif
+} KWSANDBOX;
+
+
+/** A CRT slot.  */
+typedef struct KWCRTSLOT
+{
+    KU32        iSlot;
+
+    /** The CRT module data. */
+    PKWMODULE   pModule;
+    /** Pointer to the malloc function. */
+    void * (__cdecl *pfnMalloc)(size_t);
+    /** Pointer to the beginthreadex function. */
+    uintptr_t (__cdecl *pfnBeginThreadEx)(void *, unsigned, unsigned (__stdcall *)(void *), void *, unsigned, unsigned *);
+
+} KWCRTSLOT;
+typedef KWCRTSLOT *PKWCRTSLOT;
+
+
+/** Replacement function entry. */
+typedef struct KWREPLACEMENTFUNCTION
+{
+    /** The function name. */
+    const char *pszFunction;
+    /** The length of the function name. */
+    KSIZE       cchFunction;
+    /** The module name (optional). */
+    const char *pszModule;
+    /** The replacement function, data address or CRT slot function array. */
+    KUPTR       pfnReplacement;
+    /** Only replace in the executable.
+     * @todo fix the reinitialization of non-native DLLs!  */
+    KBOOL       fOnlyExe;
+    /** Set if pfnReplacement points to a CRT slot function array. */
+    KBOOL       fCrtSlotArray;
+} KWREPLACEMENTFUNCTION;
+typedef KWREPLACEMENTFUNCTION const *PCKWREPLACEMENTFUNCTION;
+
+#if 0
+/** Replacement function entry. */
+typedef struct KWREPLACEMENTDATA
+{
+    /** The function name. */
+    const char *pszFunction;
+    /** The length of the function name. */
+    KSIZE       cchFunction;
+    /** The module name (optional). */
+    const char *pszModule;
+    /** Function providing the replacement. */
+    KUPTR     (*pfnMakeReplacement)(PKWMODULE pMod, const char *pchSymbol, KSIZE cchSymbol);
+} KWREPLACEMENTDATA;
+typedef KWREPLACEMENTDATA const *PCKWREPLACEMENTDATA;
+#endif
+
+/**
+ * One test job (--full-test).
+ */
+typedef struct KWONETEST
+{
+    /** Where this job originated. */
+    const char     *pszJobSrc;
+    /** The argument number it started with. */
+    unsigned        iJobSrc;
+    /** Set if virgin, clear if modified. */
+    KBOOL           fVirgin;
+
+    /** Number of runs to give it. */
+    unsigned        cRuns;
+
+    /** @name kSubmitHandleJobUnpacked arguments
+     * @{ */
+    const char     *pszExecutable;
+    const char     *pszCwd;
+    KU32            cArgs;
+    const char    **papszArgs;
+    KU32            cEnvVars;
+    const char    **papszEnvVars;
+    const char     *pszSpecialEnv;
+    KBOOL           fWatcomBrainDamange;
+    KBOOL           fNoPchCaching;
+    KU32            cPostCmdArgs;
+    const char    **papszPostCmdArgs;
+    /** @} */
+
+    /** Pointer to the next one. */
+    struct KWONETEST *pNext;
+} KWONETEST;
+/** Pointer to one test job. */
+typedef KWONETEST *PKWONETEST;
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** The sandbox data. */
+static KWSANDBOX    g_Sandbox;
+
+/** The module currently occupying g_abDefLdBuf. */
+static PKWMODULE    g_pModInLdBuf = NULL;
+
+/** The module that previuosly occupied g_abDefLdBuf. */
+static PKWMODULE    g_pModPrevInLdBuf = NULL;
+
+/** Module list head. */
+static PKWMODULE    g_pModuleHead = NULL;
+/** Where to insert the next module. */
+static PKWMODULE   *g_ppModuleNext = &g_pModuleHead;
+
+/** Module hash table. */
+static PKWMODULE    g_apModules[127];
+
+/** GetModuleHandle cache. */
+static KWGETMODULEHANDLECACHE g_aGetModuleHandleCache[] =
+{
+#define MOD_CACHE_STRINGS(str) str, L##str, sizeof(str) - 1, (sizeof(L##str) / sizeof(wchar_t)) - 1
+    { MOD_CACHE_STRINGS("KERNEL32.DLL"),    K_TRUE,  NULL },
+#if 1
+    { MOD_CACHE_STRINGS("KERNELBASE.DLL"),  K_TRUE,  NULL },
+    { MOD_CACHE_STRINGS("NTDLL.DLL"),       K_TRUE,  NULL },
+#endif
+    { MOD_CACHE_STRINGS("mscoree.dll"),     K_FALSE, NULL },
+};
+
+/** Module pending TLS allocation. See kwLdrModuleCreateNonNativeSetupTls. */
+static PKWMODULE    g_pModPendingTlsAlloc = NULL;
+
+/** The 1KB TLS DLLs. */
+static KWTLSDLL     g_aTls1KDlls[] =
+{
+    { L"kWorkerTls1K.dll",   K_FALSE },
+    { L"kWorkerTls1K01.dll", K_FALSE },
+    { L"kWorkerTls1K02.dll", K_FALSE },
+    { L"kWorkerTls1K03.dll", K_FALSE },
+    { L"kWorkerTls1K04.dll", K_FALSE },
+    { L"kWorkerTls1K05.dll", K_FALSE },
+    { L"kWorkerTls1K06.dll", K_FALSE },
+    { L"kWorkerTls1K07.dll", K_FALSE },
+    { L"kWorkerTls1K08.dll", K_FALSE },
+    { L"kWorkerTls1K09.dll", K_FALSE },
+    { L"kWorkerTls1K10.dll", K_FALSE },
+    { L"kWorkerTls1K11.dll", K_FALSE },
+    { L"kWorkerTls1K12.dll", K_FALSE },
+    { L"kWorkerTls1K13.dll", K_FALSE },
+    { L"kWorkerTls1K14.dll", K_FALSE },
+    { L"kWorkerTls1K15.dll", K_FALSE },
+};
+
+/** The 64KB TLS DLLs. */
+static KWTLSDLL     g_aTls64KDlls[] =
+{
+    { L"kWorkerTls64K.dll",   K_FALSE },
+    { L"kWorkerTls64K01.dll", K_FALSE },
+    { L"kWorkerTls64K02.dll", K_FALSE },
+    { L"kWorkerTls64K03.dll", K_FALSE },
+    { L"kWorkerTls64K04.dll", K_FALSE },
+    { L"kWorkerTls64K05.dll", K_FALSE },
+    { L"kWorkerTls64K06.dll", K_FALSE },
+    { L"kWorkerTls64K07.dll", K_FALSE },
+};
+
+/** The 128KB TLS DLLs. */
+static KWTLSDLL     g_aTls128KDlls[] =
+{
+    { L"kWorkerTls128K.dll",   K_FALSE },
+    { L"kWorkerTls128K01.dll", K_FALSE },
+    { L"kWorkerTls128K02.dll", K_FALSE },
+    { L"kWorkerTls128K03.dll", K_FALSE },
+    { L"kWorkerTls128K04.dll", K_FALSE },
+    { L"kWorkerTls128K05.dll", K_FALSE },
+    { L"kWorkerTls128K06.dll", K_FALSE },
+    { L"kWorkerTls128K07.dll", K_FALSE },
+};
+
+/** The 512KB TLS DLLs. */
+static KWTLSDLL     g_aTls512KDlls[] =
+{
+    { L"kWorkerTls512K.dll",   K_FALSE },
+    { L"kWorkerTls512K01.dll", K_FALSE },
+    { L"kWorkerTls512K02.dll", K_FALSE },
+    { L"kWorkerTls512K03.dll", K_FALSE },
+    { L"kWorkerTls512K04.dll", K_FALSE },
+    { L"kWorkerTls512K05.dll", K_FALSE },
+    { L"kWorkerTls512K06.dll", K_FALSE },
+    { L"kWorkerTls512K07.dll", K_FALSE },
+};
+
+/** The TLS DLLs grouped by size. */
+static KWTLSDLLENTRY const g_aTlsDlls[] =
+{
+    {     1024, K_ELEMENTS(g_aTls1KDlls),   g_aTls1KDlls },
+    {  64*1024, K_ELEMENTS(g_aTls64KDlls),  g_aTls64KDlls },
+    { 128*1024, K_ELEMENTS(g_aTls128KDlls), g_aTls128KDlls },
+    { 512*1024, K_ELEMENTS(g_aTls512KDlls), g_aTls512KDlls },
+};
+
+/** CRT slots.
+ * @note The number of entires here must match CRT_SLOT_FUNCTION_WRAPPER. */
+static KWCRTSLOT    g_aCrtSlots[32];
+
+/** windbg .reload statements. vs   */
+char                g_szReloads[4096];
+/** Current offset into g_szReloads. */
+KU32 volatile       g_cchReloads;
+
+/** The file system cache. */
+static PKFSCACHE    g_pFsCache;
+/** The current directory (referenced). */
+static PKFSOBJ      g_pCurDirObj = NULL;
+#ifdef KBUILD_OS_WINDOWS
+/** The windows system32 directory (referenced). */
+static PKFSDIR      g_pWinSys32 = NULL;
+#endif
+
+/** Verbosity level. */
+static int          g_cVerbose = 2;
+
+/** Whether we should restart the worker. */
+static KBOOL        g_fRestart = K_FALSE;
+
+/** The process group this worker is tied to (--group option), -1 if none. */
+static KI32         g_iProcessGroup = -1;
+
+/** Whether control-C/SIGINT or Control-Break/SIGBREAK have been seen. */
+static int volatile g_rcCtrlC = 0;
+
+/** The communication pipe handle.  We break this when we see Ctrl-C such. */
+#ifdef KBUILD_OS_WINDOWS
+static HANDLE       g_hPipe = INVALID_HANDLE_VALUE;
+#else
+static int          g_hPipe = -1;
+#endif
+
+
+/* Further down. */
+extern KWREPLACEMENTFUNCTION const g_aSandboxReplacements[];
+extern KU32                  const g_cSandboxReplacements;
+
+extern KWREPLACEMENTFUNCTION const g_aSandboxNativeReplacements[];
+extern KU32                  const g_cSandboxNativeReplacements;
+
+extern KWREPLACEMENTFUNCTION const g_aSandboxGetProcReplacements[];
+extern KU32                  const g_cSandboxGetProcReplacements;
+
+
+/** Create a larget BSS blob that with help of /IMAGEBASE:0x10000 should
+ * cover the default executable link address of 0x400000.
+ * @remarks Early main() makes it read+write+executable.  Attempts as having
+ *          it as a separate section failed because the linker insists on
+ *          writing out every zero in the uninitialized section, resulting in
+ *          really big binaries. */
+__declspec(align(0x1000))
+static KU8          g_abDefLdBuf[16*1024*1024];
+
+#ifdef WITH_LOG_FILE
+/** Log file handle.   */
+static HANDLE g_hLogFile = INVALID_HANDLE_VALUE;
+#endif
+
+
+#ifdef WITH_FIXED_VIRTUAL_ALLOCS
+/** Virtual address space reserved for CL.EXE heap manager.
+ *
+ * Visual C++ 2010 reserves a 78MB chunk of memory from cl.exe at a fixed
+ * address.  It's among other things used for precompiled headers, which
+ * seemingly have addresses hardcoded into them and won't work if mapped
+ * elsewhere.  Thus, we have to make sure the area is available when cl.exe asks
+ * for it.  (The /Zm option may affect this allocation.)
+ */
+static struct
+{
+    /** The memory address we need.   */
+    KUPTR const     uFixed;
+    /** How much we need to fix. */
+    KSIZE const     cbFixed;
+    /** What we actually got, NULL if given back. */
+    void           *pvReserved;
+    /** Whether it is in use or not. */
+    KBOOL           fInUse;
+} g_aFixedVirtualAllocs[] =
+{
+# if K_ARCH == K_ARCH_X86_32
+    /* Visual C++ 2010 reserves 0x04b00000 by default, and Visual C++ 2015 reserves
+       0x05300000.  We get 0x0f000000 to handle large precompiled header files. */
+    { KUPTR_C(        0x11000000), KSIZE_C(        0x0f000000), NULL },
+# else
+    { KUPTR_C(0x000006BB00000000), KSIZE_C(0x000000002EE00000), NULL },
+# endif
+};
+#endif
+
+
+#ifdef WITH_HISTORY
+/** The job history. */
+static char     *g_apszHistory[32];
+/** Index of the next history entry. */
+static unsigned  g_iHistoryNext = 0;
+#endif
+
+
+/** Number of jobs executed. */
+static KU32     g_cJobs;
+/** Number of tools. */
+static KU32     g_cTools;
+/** Number of modules. */
+static KU32     g_cModules;
+/** Number of non-native modules. */
+static KU32     g_cNonNativeModules;
+/** Number of read-cached files. */
+static KU32     g_cReadCachedFiles;
+/** Total size of read-cached files. */
+static KSIZE    g_cbReadCachedFiles;
+
+/** Total number of ReadFile calls. */
+static KSIZE    g_cReadFileCalls;
+/** Total bytes read via ReadFile. */
+static KSIZE    g_cbReadFileTotal;
+/** Total number of read from read-cached files. */
+static KSIZE    g_cReadFileFromReadCached;
+/** Total bytes read from read-cached files. */
+static KSIZE    g_cbReadFileFromReadCached;
+/** Total number of read from in-memory temporary files. */
+static KSIZE    g_cReadFileFromInMemTemp;
+/** Total bytes read from in-memory temporary files. */
+static KSIZE    g_cbReadFileFromInMemTemp;
+
+/** Total number of WriteFile calls. */
+static KSIZE    g_cWriteFileCalls;
+/** Total bytes written via WriteFile. */
+static KSIZE    g_cbWriteFileTotal;
+/** Total number of written to from in-memory temporary files. */
+static KSIZE    g_cWriteFileToInMemTemp;
+/** Total bytes written to in-memory temporary files. */
+static KSIZE    g_cbWriteFileToInMemTemp;
+
+#ifdef WITH_HASH_CACHE
+/** Total number of hashes. */
+static KSIZE    g_cHashes;
+/** Number of cached hash hits. */
+static KSIZE    g_cHashesCached;
+/** Number of fallbacks. */
+static KSIZE    g_cHashesFallbacks;
+/** Number of partial cached file hashes. */
+static KSIZE    g_cHashesPartial;
+/** Total number of MD5 hashes. */
+static KSIZE    g_cHashesMd5;
+/** Total number of SHA-1 hashes. */
+static KSIZE    g_cHashesSha1;
+/** Total number of SHA-256 hashes. */
+static KSIZE    g_cHashesSha256;
+/** Total number of SHA-512 hashes. */
+static KSIZE    g_cHashesSha512;
+#endif
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+static FNKLDRMODGETIMPORT kwLdrModuleGetImportCallback;
+static int kwLdrModuleResolveAndLookup(const char *pszName, PKWMODULE pExe, PKWMODULE pImporter,
+                                       const char *pszSearchPath, PKWMODULE *ppMod);
+static PKWMODULE kwLdrModuleForLoadedNative(const char *pszName, KBOOL fEnsureCrtSlot, KBOOL fAlwaysPresent);
+static PKWMODULE kwLdrModuleForLoadedNativeByHandle(HMODULE hModule, KBOOL fEnsureCrtSlot, const char *pszLogName);
+static int kwLdrModuleCreateCrtSlot(PKWMODULE pModule);
+static PKWMODULE kwToolLocateModuleByHandle(PKWTOOL pTool, HMODULE hmod);
+static char *kwSandboxDoGetEnvA(PKWSANDBOX pSandbox, const char *pchVar, KSIZE cchVar);
+static KBOOL kwSandboxHandleTableEnter(PKWSANDBOX pSandbox, PKWHANDLE pHandle, HANDLE hHandle);
+static PKWHANDLE kwSandboxHandleLookup(HANDLE hFile);
+static PKWHANDLE kwSandboxHandleGet(HANDLE hFile);
+K_INLINE void kwSandboxHandlePut(PKWHANDLE pHandle);
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+static void kwSandboxConsoleWriteA(PKWSANDBOX pSandbox, PKWOUTPUTSTREAMBUF pLineBuf, const char *pchBuffer, KU32 cchToWrite);
+#endif
+static PPEB kwSandboxGetProcessEnvironmentBlock(void);
+
+
+
+
+/**
+ * Debug printing.
+ * @param   pszFormat           Debug format string.
+ * @param   ...                 Format argument.
+ */
+static void kwDbgPrintfV(const char *pszFormat, va_list va)
+{
+    if (g_cVerbose >= 2)
+    {
+        DWORD const dwSavedErr = GetLastError();
+#ifdef WITH_LOG_FILE
+        DWORD       dwIgnored;
+        char        szTmp[2048];
+        int         cchPrefix = _snprintf(szTmp, sizeof(szTmp), "%x:%x: ", GetCurrentProcessId(), GetCurrentThreadId());
+        int         cch = vsnprintf(&szTmp[cchPrefix], sizeof(szTmp) - cchPrefix, pszFormat, va);
+        if (cch < (int)sizeof(szTmp) - 1 - cchPrefix)
+            cch += cchPrefix;
+        else
+        {
+            cch = sizeof(szTmp) - 1;
+            szTmp[cch] = '\0';
+        }
+
+        if (g_hLogFile == INVALID_HANDLE_VALUE)
+        {
+            wchar_t wszFilename[128];
+            _snwprintf(wszFilename, K_ELEMENTS(wszFilename), L"kWorker-%x-%x.log", GetTickCount(), GetCurrentProcessId());
+            g_hLogFile = CreateFileW(wszFilename, GENERIC_WRITE, FILE_SHARE_READ, NULL /*pSecAttrs*/, CREATE_ALWAYS,
+                                     FILE_ATTRIBUTE_NORMAL, NULL /*hTemplateFile*/);
+        }
+
+        WriteFile(g_hLogFile, szTmp, cch, &dwIgnored, NULL /*pOverlapped*/);
+#else
+        fprintf(stderr, "debug: ");
+        vfprintf(stderr, pszFormat, va);
+#endif
+
+        SetLastError(dwSavedErr);
+    }
+}
+
+
+/**
+ * Debug printing.
+ * @param   pszFormat           Debug format string.
+ * @param   ...                 Format argument.
+ */
+static void kwDbgPrintf(const char *pszFormat, ...)
+{
+    if (g_cVerbose >= 2)
+    {
+        va_list va;
+        va_start(va, pszFormat);
+        kwDbgPrintfV(pszFormat, va);
+        va_end(va);
+    }
+}
+
+
+/**
+ * Debugger printing.
+ * @param   pszFormat           Debug format string.
+ * @param   ...                 Format argument.
+ */
+static void kwDebuggerPrintfV(const char *pszFormat, va_list va)
+{
+    if (IsDebuggerPresent())
+    {
+        DWORD const dwSavedErr = GetLastError();
+        char szTmp[2048];
+
+        _vsnprintf(szTmp, sizeof(szTmp), pszFormat, va);
+        OutputDebugStringA(szTmp);
+
+        SetLastError(dwSavedErr);
+    }
+}
+
+
+/**
+ * Debugger printing.
+ * @param   pszFormat           Debug format string.
+ * @param   ...                 Format argument.
+ */
+static void kwDebuggerPrintf(const char *pszFormat, ...)
+{
+    va_list va;
+    va_start(va, pszFormat);
+    kwDebuggerPrintfV(pszFormat, va);
+    va_end(va);
+}
+
+
+
+/**
+ * Error printing.
+ * @param   pszFormat           Message format string.
+ * @param   ...                 Format argument.
+ */
+static void kwErrPrintfV(const char *pszFormat, va_list va)
+{
+    DWORD const dwSavedErr = GetLastError();
+
+#if defined(KW_LOG_ENABLED) && defined(WITH_LOG_FILE)
+    va_list vaCopy;
+# if  defined(va_copy) || !defined(_MSC_VER) || _MSC_VER >= 1700 /*??*/
+    va_copy(vaCopy, va);
+# else
+    vaCopy = va;
+# endif
+    kwDebuggerPrintf("kWorker: error: ");
+    kwDebuggerPrintfV(pszFormat, vaCopy);
+#endif
+
+    fprintf(stderr, "kWorker: error: ");
+    vfprintf(stderr, pszFormat, va);
+    fflush(stderr); /* In case it's a pipe. */
+
+    SetLastError(dwSavedErr);
+}
+
+
+/**
+ * Error printing.
+ * @param   pszFormat           Message format string.
+ * @param   ...                 Format argument.
+ */
+static void kwErrPrintf(const char *pszFormat, ...)
+{
+    va_list va;
+    va_start(va, pszFormat);
+    kwErrPrintfV(pszFormat, va);
+    va_end(va);
+}
+
+
+/**
+ * Error printing.
+ * @return  rc;
+ * @param   rc                  Return value
+ * @param   pszFormat           Message format string.
+ * @param   ...                 Format argument.
+ */
+static int kwErrPrintfRc(int rc, const char *pszFormat, ...)
+{
+    va_list va;
+    va_start(va, pszFormat);
+    kwErrPrintfV(pszFormat, va);
+    va_end(va);
+    return rc;
+}
+
+
+#ifdef K_STRICT
+
+KHLP_DECL(void) kHlpAssertMsg1(const char *pszExpr, const char *pszFile, unsigned iLine, const char *pszFunction)
+{
+    DWORD const dwSavedErr = GetLastError();
+
+    fprintf(stderr,
+            "\n"
+            "!!Assertion failed!!\n"
+            "Expression: %s\n"
+            "Function :  %s\n"
+            "File:       %s\n"
+            "Line:       %d\n"
+            ,  pszExpr, pszFunction, pszFile, iLine);
+
+    SetLastError(dwSavedErr);
+}
+
+
+KHLP_DECL(void) kHlpAssertMsg2(const char *pszFormat, ...)
+{
+    DWORD const dwSavedErr = GetLastError();
+    va_list va;
+
+    va_start(va, pszFormat);
+    fprintf(stderr, pszFormat, va);
+    va_end(va);
+
+    SetLastError(dwSavedErr);
+}
+
+#endif /* K_STRICT */
+
+
+/**
+ * Hashes a string.
+ *
+ * @returns 32-bit string hash.
+ * @param   pszString           String to hash.
+ */
+static KU32 kwStrHash(const char *pszString)
+{
+    /* This algorithm was created for sdbm (a public-domain reimplementation of
+       ndbm) database library. it was found to do well in scrambling bits,
+       causing better distribution of the keys and fewer splits. it also happens
+       to be a good general hashing function with good distribution. the actual
+       function is hash(i) = hash(i - 1) * 65599 + str[i]; what is included below
+       is the faster version used in gawk. [there is even a faster, duff-device
+       version] the magic constant 65599 was picked out of thin air while
+       experimenting with different constants, and turns out to be a prime.
+       this is one of the algorithms used in berkeley db (see sleepycat) and
+       elsewhere. */
+    KU32 uHash = 0;
+    KU32 uChar;
+    while ((uChar = (unsigned char)*pszString++) != 0)
+        uHash = uChar + (uHash << 6) + (uHash << 16) - uHash;
+    return uHash;
+}
+
+
+/**
+ * Hashes a string.
+ *
+ * @returns The string length.
+ * @param   pszString           String to hash.
+ * @param   puHash              Where to return the 32-bit string hash.
+ */
+static KSIZE kwStrHashEx(const char *pszString, KU32 *puHash)
+{
+    const char * const pszStart = pszString;
+    KU32 uHash = 0;
+    KU32 uChar;
+    while ((uChar = (unsigned char)*pszString) != 0)
+    {
+        uHash = uChar + (uHash << 6) + (uHash << 16) - uHash;
+        pszString++;
+    }
+    *puHash = uHash;
+    return pszString - pszStart;
+}
+
+
+/**
+ * Hashes a string.
+ *
+ * @returns The string length in wchar_t units.
+ * @param   pwszString          String to hash.
+ * @param   puHash              Where to return the 32-bit string hash.
+ */
+static KSIZE kwUtf16HashEx(const wchar_t *pwszString, KU32 *puHash)
+{
+    const wchar_t * const pwszStart = pwszString;
+    KU32 uHash = 0;
+    KU32 uChar;
+    while ((uChar = *pwszString) != 0)
+    {
+        uHash = uChar + (uHash << 6) + (uHash << 16) - uHash;
+        pwszString++;
+    }
+    *puHash = uHash;
+    return pwszString - pwszStart;
+}
+
+
+/**
+ * Converts the given string to unicode.
+ *
+ * @returns Length of the resulting string in wchar_t's.
+ * @param   pszSrc              The source string.
+ * @param   pwszDst             The destination buffer.
+ * @param   cwcDst              The size of the destination buffer in wchar_t's.
+ */
+static KSIZE kwStrToUtf16(const char *pszSrc, wchar_t *pwszDst, KSIZE cwcDst)
+{
+    /* Just to the quick ASCII stuff for now. correct ansi code page stuff later some time.  */
+    KSIZE offDst = 0;
+    while (offDst < cwcDst)
+    {
+        char ch = *pszSrc++;
+        pwszDst[offDst++] = ch;
+        if (!ch)
+            return offDst - 1;
+        kHlpAssert((unsigned)ch < 127);
+    }
+
+    pwszDst[offDst - 1] = '\0';
+    return offDst;
+}
+
+
+/**
+ * Converts the given string to UTF-16, allocating the buffer.
+ *
+ * @returns Pointer to the new heap allocation containing the UTF-16 version of
+ *          the source string.
+ * @param   pchSrc              The source string.
+ * @param   cchSrc              The length of the source string.
+ */
+static wchar_t *kwStrToUtf16AllocN(const char *pchSrc, KSIZE cchSrc)
+{
+    DWORD const dwErrSaved = GetLastError();
+    KSIZE       cwcBuf     = cchSrc + 1;
+    wchar_t    *pwszBuf    = (wchar_t *)kHlpAlloc(cwcBuf * sizeof(pwszBuf));
+    if (pwszBuf)
+    {
+        if (cchSrc > 0)
+        {
+            int cwcRet = MultiByteToWideChar(CP_ACP, 0, pchSrc, (int)cchSrc, pwszBuf, (int)cwcBuf - 1);
+            if (cwcRet > 0)
+            {
+                kHlpAssert(cwcRet < (KSSIZE)cwcBuf);
+                pwszBuf[cwcRet] = '\0';
+            }
+            else
+            {
+                kHlpFree(pwszBuf);
+
+                /* Figure the length and allocate the right buffer size. */
+                SetLastError(NO_ERROR);
+                cwcRet = MultiByteToWideChar(CP_ACP, 0, pchSrc, (int)cchSrc, pwszBuf, 0);
+                if (cwcRet)
+                {
+                    cwcBuf = cwcRet + 2;
+                    pwszBuf = (wchar_t *)kHlpAlloc(cwcBuf * sizeof(pwszBuf));
+                    if (pwszBuf)
+                    {
+                        SetLastError(NO_ERROR);
+                        cwcRet = MultiByteToWideChar(CP_ACP, 0, pchSrc, (int)cchSrc, pwszBuf, (int)cwcBuf - 1);
+                        if (cwcRet)
+                        {
+                            kHlpAssert(cwcRet < (KSSIZE)cwcBuf);
+                            pwszBuf[cwcRet] = '\0';
+                        }
+                        else
+                        {
+                            kwErrPrintf("MultiByteToWideChar(,,%*.*s,,) -> dwErr=%d\n", cchSrc, cchSrc, pchSrc, GetLastError());
+                            kHlpFree(pwszBuf);
+                            pwszBuf = NULL;
+                        }
+                    }
+                }
+                else
+                {
+                    kwErrPrintf("MultiByteToWideChar(,,%*.*s,,NULL,0) -> dwErr=%d\n", cchSrc, cchSrc, pchSrc, GetLastError());
+                    pwszBuf = NULL;
+                }
+            }
+        }
+        else
+            pwszBuf[0] = '\0';
+    }
+    SetLastError(dwErrSaved);
+    return pwszBuf;
+}
+
+
+/**
+ * Converts the given UTF-16 to a normal string.
+ *
+ * @returns Length of the resulting string.
+ * @param   pwszSrc             The source UTF-16 string.
+ * @param   pszDst              The destination buffer.
+ * @param   cbDst               The size of the destination buffer in bytes.
+ */
+static KSIZE kwUtf16ToStr(const wchar_t *pwszSrc, char *pszDst, KSIZE cbDst)
+{
+    /* Just to the quick ASCII stuff for now. correct ansi code page stuff later some time.  */
+    KSIZE offDst = 0;
+    while (offDst < cbDst)
+    {
+        wchar_t wc = *pwszSrc++;
+        pszDst[offDst++] = (char)wc;
+        if (!wc)
+            return offDst - 1;
+        kHlpAssert((unsigned)wc < 127);
+    }
+
+    pszDst[offDst - 1] = '\0';
+    return offDst;
+}
+
+
+/**
+ * Converts the given UTF-16 to ASSI, allocating the buffer.
+ *
+ * @returns Pointer to the new heap allocation containing the ANSI version of
+ *          the source string.
+ * @param   pwcSrc              The source string.
+ * @param   cwcSrc              The length of the source string.
+ */
+static char *kwUtf16ToStrAllocN(const wchar_t *pwcSrc, KSIZE cwcSrc)
+{
+    DWORD const dwErrSaved = GetLastError();
+    KSIZE       cbBuf      = cwcSrc + (cwcSrc >> 1) + 1;
+    char       *pszBuf     = (char *)kHlpAlloc(cbBuf);
+    if (pszBuf)
+    {
+        if (cwcSrc > 0)
+        {
+            int cchRet = WideCharToMultiByte(CP_ACP, 0, pwcSrc, (int)cwcSrc, pszBuf, (int)cbBuf - 1, NULL, NULL);
+            if (cchRet > 0)
+            {
+                kHlpAssert(cchRet < (KSSIZE)cbBuf);
+                pszBuf[cchRet] = '\0';
+            }
+            else
+            {
+                kHlpFree(pszBuf);
+
+                /* Figure the length and allocate the right buffer size. */
+                SetLastError(NO_ERROR);
+                cchRet = WideCharToMultiByte(CP_ACP, 0, pwcSrc, (int)cwcSrc, pszBuf, 0, NULL, NULL);
+                if (cchRet)
+                {
+                    cbBuf = cchRet + 2;
+                    pszBuf = (char *)kHlpAlloc(cbBuf);
+                    if (pszBuf)
+                    {
+                        SetLastError(NO_ERROR);
+                        cchRet = WideCharToMultiByte(CP_ACP, 0, pwcSrc, (int)cwcSrc, pszBuf, (int)cbBuf - 1, NULL, NULL);
+                        if (cchRet)
+                        {
+                            kHlpAssert(cchRet < (KSSIZE)cbBuf);
+                            pszBuf[cchRet] = '\0';
+                        }
+                        else
+                        {
+                            kwErrPrintf("WideCharToMultiByte(,,%*.*ls,,) -> dwErr=%d\n", cwcSrc, cwcSrc, pwcSrc, GetLastError());
+                            kHlpFree(pszBuf);
+                            pszBuf = NULL;
+                        }
+                    }
+                }
+                else
+                {
+                    kwErrPrintf("WideCharToMultiByte(,,%*.*ls,,NULL,0) -> dwErr=%d\n", cwcSrc, cwcSrc, pwcSrc, GetLastError());
+                    pszBuf = NULL;
+                }
+            }
+        }
+        else
+            pszBuf[0] = '\0';
+    }
+    SetLastError(dwErrSaved);
+    return pszBuf;
+}
+
+
+
+/** UTF-16 string length.  */
+static KSIZE kwUtf16Len(wchar_t const *pwsz)
+{
+    KSIZE cwc = 0;
+    while (*pwsz != '\0')
+        cwc++, pwsz++;
+    return cwc;
+}
+
+/**
+ * Copy out the UTF-16 string following the convension of GetModuleFileName
+ */
+static DWORD kwUtf16CopyStyle1(wchar_t const *pwszSrc, wchar_t *pwszDst, KSIZE cwcDst)
+{
+    KSIZE cwcSrc = kwUtf16Len(pwszSrc);
+    if (cwcSrc + 1 <= cwcDst)
+    {
+        kHlpMemCopy(pwszDst, pwszSrc, (cwcSrc + 1) * sizeof(wchar_t));
+        return (DWORD)cwcSrc;
+    }
+    if (cwcDst > 0)
+    {
+        KSIZE cwcDstTmp = cwcDst - 1;
+        pwszDst[cwcDstTmp] = '\0';
+        if (cwcDstTmp > 0)
+            kHlpMemCopy(pwszDst, pwszSrc, cwcDstTmp);
+    }
+    SetLastError(ERROR_INSUFFICIENT_BUFFER);
+    return (DWORD)cwcDst;
+}
+
+
+/**
+ * Copy out the ANSI string following the convension of GetModuleFileName
+ */
+static DWORD kwStrCopyStyle1(char const *pszSrc, char *pszDst, KSIZE cbDst)
+{
+    KSIZE cchSrc = kHlpStrLen(pszSrc);
+    if (cchSrc + 1 <= cbDst)
+    {
+        kHlpMemCopy(pszDst, pszSrc, cchSrc + 1);
+        return (DWORD)cchSrc;
+    }
+    if (cbDst > 0)
+    {
+        KSIZE cbDstTmp = cbDst - 1;
+        pszDst[cbDstTmp] = '\0';
+        if (cbDstTmp > 0)
+            kHlpMemCopy(pszDst, pszSrc, cbDstTmp);
+    }
+    SetLastError(ERROR_INSUFFICIENT_BUFFER);
+    return (DWORD)cbDst;
+}
+
+
+/**
+ * Normalizes the path so we get a consistent hash.
+ *
+ * @returns status code.
+ * @param   pszPath             The path.
+ * @param   pszNormPath         The output buffer.
+ * @param   cbNormPath          The size of the output buffer.
+ */
+static int kwPathNormalize(const char *pszPath, char *pszNormPath, KSIZE cbNormPath)
+{
+    KFSLOOKUPERROR enmError;
+    PKFSOBJ pFsObj = kFsCacheLookupA(g_pFsCache, pszPath, &enmError);
+    if (pFsObj)
+    {
+        KBOOL fRc;
+        fRc = kFsCacheObjGetFullPathA(pFsObj, pszNormPath, cbNormPath, '\\');
+        kFsCacheObjRelease(g_pFsCache, pFsObj);
+        if (fRc)
+            return 0;
+        return KERR_BUFFER_OVERFLOW;
+    }
+    return KERR_FILE_NOT_FOUND;
+}
+
+
+/**
+ * Get the pointer to the filename part of the path.
+ *
+ * @returns Pointer to where the filename starts within the string pointed to by pszFilename.
+ * @returns Pointer to the terminator char if no filename.
+ * @param   pszPath     The path to parse.
+ */
+static wchar_t *kwPathGetFilenameW(const wchar_t *pwszPath)
+{
+    const wchar_t *pwszLast = NULL;
+    for (;;)
+    {
+        wchar_t wc = *pwszPath;
+#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS
+        if (wc == '/' || wc == '\\' || wc == ':')
+        {
+            while ((wc = *++pwszPath) == '/' || wc == '\\' || wc == ':')
+                /* nothing */;
+            pwszLast = pwszPath;
+        }
+#else
+        if (wc == '/')
+        {
+            while ((wc = *++pszFilename) == '/')
+                /* betsuni */;
+            pwszLast = pwszPath;
+        }
+#endif
+        if (!wc)
+            return (wchar_t *)(pwszLast ? pwszLast : pwszPath);
+        pwszPath++;
+    }
+}
+
+
+
+/**
+ * Retains a new reference to the given module
+ * @returns pMod
+ * @param   pMod                The module to retain.
+ */
+static PKWMODULE kwLdrModuleRetain(PKWMODULE pMod)
+{
+    kHlpAssert(pMod->cRefs > 0);
+    kHlpAssert(pMod->cRefs < 64 || pMod->fNative /* kernelbase.dll and VC++ 14.2 */);
+    pMod->cRefs++;
+    return pMod;
+}
+
+
+/**
+ * Releases a module reference.
+ *
+ * @param   pMod                The module to release.
+ */
+static void kwLdrModuleRelease(PKWMODULE pMod)
+{
+    if (--pMod->cRefs == 0)
+    {
+        /* Make sure it doesn't receive any more native TLS callbacks.if non-native. */
+        if (!pMod->fNative && pMod->u.Manual.ppTlsWorkerModuleVar)
+        {
+            *pMod->u.Manual.ppTlsWorkerModuleVar = NULL;
+            pMod->u.Manual.ppTlsWorkerModuleVar  = NULL;
+        }
+
+        /* Unlink it from the hash table. */
+        if (!pMod->fExe)
+        {
+            unsigned  idx   = pMod->uHashPath % K_ELEMENTS(g_apModules);
+            if (g_apModules[idx] == pMod)
+                g_apModules[idx] = pMod->pNextHash;
+            else
+            {
+                PKWMODULE pPrev = g_apModules[idx];
+                kHlpAssert(pPrev != NULL);
+                while (pPrev->pNextHash != pMod)
+                {
+                    pPrev = pPrev->pNextHash;
+                    kHlpAssert(pPrev != NULL);
+                }
+                pPrev->pNextHash = pMod->pNextHash;
+            }
+        }
+
+        /* Unlink it from the list. */
+        if (pMod != g_pModuleHead)
+        {
+            PKWMODULE pPrev = g_pModuleHead;
+            while (pPrev)
+            {
+                if (pPrev->pNextList == pMod)
+                {
+                    pPrev->pNextList = pMod->pNextList;
+                    if (!pMod->pNextList)
+                        g_ppModuleNext = &pPrev->pNextList;
+                    break;
+                }
+                pPrev = pPrev->pNextList;
+            }
+            kHlpAssert(pPrev != NULL);
+        }
+        else
+        {
+            g_pModuleHead = pMod->pNextList;
+            if (!pMod->pNextList)
+                g_ppModuleNext = &g_pModuleHead;
+        }
+
+        /* Release import modules. */
+        if (!pMod->fNative)
+        {
+            KSIZE idx = pMod->u.Manual.cImpMods;
+            while (idx-- > 0)
+                if (pMod->u.Manual.apImpMods[idx])
+                {
+                    kwLdrModuleRelease(pMod->u.Manual.apImpMods[idx]);
+                    pMod->u.Manual.apImpMods[idx] = NULL;
+                }
+        }
+
+        /* Free our resources. */
+        kLdrModClose(pMod->pLdrMod);
+        pMod->pLdrMod = NULL;
+
+        if (!pMod->fNative)
+        {
+            kHlpPageFree(pMod->u.Manual.pbCopy, pMod->cbImage);
+            kHlpPageFree(pMod->u.Manual.pbLoad, pMod->cbImage);
+        }
+
+        if (pMod->iCrtSlot != KU8_MAX)
+            g_aCrtSlots[pMod->iCrtSlot].pModule = NULL;
+
+        if (pMod->pszMsPdbSrvEndpoint)
+        {
+            kHlpFree(pMod->pszMsPdbSrvEndpoint);
+            pMod->pszMsPdbSrvEndpoint = NULL;
+        }
+
+        kHlpFree(pMod);
+    }
+    else
+        kHlpAssert(pMod->cRefs < 64 || pMod->fNative /* kernelbase.dll and VC++ 14.2 */);
+}
+
+
+/**
+ * Links the module into the module hash table.
+ *
+ * @returns pMod
+ * @param   pMod                The module to link.
+ */
+static PKWMODULE kwLdrModuleLink(PKWMODULE pMod)
+{
+    if (!pMod->fExe)
+    {
+        unsigned idx = pMod->uHashPath % K_ELEMENTS(g_apModules);
+        pMod->pNextHash = g_apModules[idx];
+        g_apModules[idx] = pMod;
+    }
+
+    pMod->pNextList = NULL;
+    *g_ppModuleNext = pMod;
+    g_ppModuleNext = &pMod->pNextList;
+
+    return pMod;
+}
+
+
+/**
+ * Replaces imports for this module according to g_aSandboxNativeReplacements.
+ *
+ * @param   pMod                The natively loaded module to process.
+ */
+static void kwLdrModuleDoNativeImportReplacements(PKWMODULE pMod)
+{
+    KSIZE const                 cbImage = (KSIZE)kLdrModSize(pMod->pLdrMod);
+    KU8 const * const           pbImage = (KU8 const *)pMod->hOurMod;
+    IMAGE_DOS_HEADER const     *pMzHdr  = (IMAGE_DOS_HEADER const *)pbImage;
+    IMAGE_NT_HEADERS const     *pNtHdrs;
+    IMAGE_DATA_DIRECTORY const *pDirEnt;
+
+    kHlpAssert(pMod->fNative);
+
+    /*
+     * Locate the export descriptors.
+     */
+    /* MZ header. */
+    if (pMzHdr->e_magic == IMAGE_DOS_SIGNATURE)
+    {
+        kHlpAssertReturnVoid((KU32)pMzHdr->e_lfanew <= cbImage - sizeof(*pNtHdrs));
+        pNtHdrs = (IMAGE_NT_HEADERS const *)&pbImage[pMzHdr->e_lfanew];
+    }
+    else
+        pNtHdrs = (IMAGE_NT_HEADERS const *)pbImage;
+
+    /* Check PE header. */
+    kHlpAssertReturnVoid(pNtHdrs->Signature == IMAGE_NT_SIGNATURE);
+    kHlpAssertReturnVoid(pNtHdrs->FileHeader.SizeOfOptionalHeader == sizeof(pNtHdrs->OptionalHeader));
+
+    /* Locate the import descriptor array. */
+    pDirEnt = (IMAGE_DATA_DIRECTORY const *)&pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT];
+    if (   pDirEnt->Size > 0
+        && pDirEnt->VirtualAddress != 0)
+    {
+        const IMAGE_IMPORT_DESCRIPTOR  *pImpDesc    = (const IMAGE_IMPORT_DESCRIPTOR *)&pbImage[pDirEnt->VirtualAddress];
+        KU32                            cLeft       = pDirEnt->Size / sizeof(*pImpDesc);
+        MEMORY_BASIC_INFORMATION        ProtInfo    = { NULL, NULL, 0, 0, 0, 0, 0 };
+        KU8                            *pbProtRange = NULL;
+        SIZE_T                          cbProtRange = 0;
+        DWORD                           fOldProt    = 0;
+        KU32 const                      cbPage      = 0x1000;
+        BOOL                            fRc;
+
+
+        kHlpAssertReturnVoid(pDirEnt->VirtualAddress < cbImage);
+        kHlpAssertReturnVoid(pDirEnt->Size < cbImage);
+        kHlpAssertReturnVoid(pDirEnt->VirtualAddress + pDirEnt->Size <= cbImage);
+
+        /*
+         * Walk the import descriptor array.
+         * Note! This only works if there's a backup thunk array, otherwise we cannot get at the name.
+         */
+        while (   cLeft-- > 0
+               && pImpDesc->Name > 0
+               && pImpDesc->FirstThunk > 0)
+        {
+            KU32                iThunk;
+            const char * const  pszImport   = (const char *)&pbImage[pImpDesc->Name];
+            PKWMODULE           pImportMod  = NULL;
+            PIMAGE_THUNK_DATA   paThunks    = (PIMAGE_THUNK_DATA)&pbImage[pImpDesc->FirstThunk];
+            PIMAGE_THUNK_DATA   paOrgThunks = (PIMAGE_THUNK_DATA)&pbImage[pImpDesc->OriginalFirstThunk];
+            kHlpAssertReturnVoid(pImpDesc->Name < cbImage);
+            kHlpAssertReturnVoid(pImpDesc->FirstThunk < cbImage);
+            kHlpAssertReturnVoid(pImpDesc->OriginalFirstThunk < cbImage);
+            kHlpAssertReturnVoid(pImpDesc->OriginalFirstThunk != pImpDesc->FirstThunk);
+            kHlpAssertReturnVoid(pImpDesc->OriginalFirstThunk);
+
+            /* Iterate the thunks. */
+            for (iThunk = 0; paOrgThunks[iThunk].u1.Ordinal != 0; iThunk++)
+            {
+                KUPTR const off = paOrgThunks[iThunk].u1.Function;
+                kHlpAssertReturnVoid(off < cbImage);
+                if (!IMAGE_SNAP_BY_ORDINAL(off))
+                {
+                    IMAGE_IMPORT_BY_NAME const *pName     = (IMAGE_IMPORT_BY_NAME const *)&pbImage[off];
+                    KSIZE const                 cchSymbol = kHlpStrLen((const char *)&pName->Name[0]);
+                    KU32                        i         = g_cSandboxNativeReplacements;
+                    while (i-- > 0)
+                        if (   g_aSandboxNativeReplacements[i].cchFunction == cchSymbol
+                            && kHlpMemComp(g_aSandboxNativeReplacements[i].pszFunction, pName->Name, cchSymbol) == 0)
+                        {
+                            if (   !g_aSandboxNativeReplacements[i].pszModule
+                                || kHlpStrICompAscii(g_aSandboxNativeReplacements[i].pszModule, pszImport) == 0)
+                            {
+                                KWLDR_LOG(("%s: replacing %s!%s\n", pMod->pLdrMod->pszName, pszImport, pName->Name));
+
+                                /* The .rdata section is normally read-only, so we need to make it writable first. */
+                                if ((KUPTR)&paThunks[iThunk] - (KUPTR)pbProtRange >= cbPage)
+                                {
+                                    /* Restore previous .rdata page. */
+                                    if (fOldProt)
+                                    {
+                                        fRc = VirtualProtect(pbProtRange, cbProtRange, fOldProt, NULL /*pfOldProt*/);
+                                        kHlpAssert(fRc || GetLastError() == ERROR_NOACCESS /*tinderwin2*/);
+                                        fOldProt = 0;
+                                    }
+
+                                    /* Query attributes for the current .rdata page. */
+                                    pbProtRange = (KU8 *)((KUPTR)&paThunks[iThunk] & ~(KUPTR)(cbPage - 1));
+                                    cbProtRange = VirtualQuery(pbProtRange, &ProtInfo, sizeof(ProtInfo));
+                                    kHlpAssert(cbProtRange);
+                                    if (cbProtRange)
+                                    {
+                                        switch (ProtInfo.Protect)
+                                        {
+                                            case PAGE_READWRITE:
+                                            case PAGE_WRITECOPY:
+                                            case PAGE_EXECUTE_READWRITE:
+                                            case PAGE_EXECUTE_WRITECOPY:
+                                                /* Already writable, nothing to do. */
+                                                fRc = TRUE;
+                                                break;
+
+                                            default:
+                                                kHlpAssertMsgFailed(("%#x\n", ProtInfo.Protect));
+                                            case PAGE_READONLY:
+                                                cbProtRange = cbPage;
+                                                fRc = VirtualProtect(pbProtRange, cbProtRange, PAGE_READWRITE, &fOldProt);
+                                                break;
+
+                                            case PAGE_EXECUTE:
+                                            case PAGE_EXECUTE_READ:
+                                                cbProtRange = cbPage;
+                                                fRc = VirtualProtect(pbProtRange, cbProtRange, PAGE_EXECUTE_READWRITE, &fOldProt);
+                                                break;
+                                        }
+                                        kHlpAssertStmt(fRc, fOldProt = 0);
+                                    }
+                                }
+
+                                /*
+                                 * Unslotted replacements are simple.
+                                 */
+                                if (!g_aSandboxNativeReplacements[i].fCrtSlotArray)
+                                    paThunks[iThunk].u1.AddressOfData = g_aSandboxNativeReplacements[i].pfnReplacement;
+                                else
+                                {
+                                    /*
+                                     * Must find our module entry for this module, possibly creating one.
+                                     */
+                                    if (!pImportMod)
+                                    {
+                                        pImportMod = kwLdrModuleForLoadedNative(pszImport, K_TRUE /*fEnsureCrtSlot*/,
+                                                                                K_TRUE /*fAlwaysPresent*/);
+                                        if (!pImportMod)
+                                        {
+                                            kwErrPrintf("Failed to get module '%s' when performing replacements on module '%s'!\n",
+                                                        pszImport, pMod->pszPath);
+                                            break;
+                                        }
+                                    }
+                                    paThunks[iThunk].u1.AddressOfData
+                                        = ((KUPTR *)g_aSandboxNativeReplacements[i].pfnReplacement)[pImportMod->iCrtSlot];
+                                }
+                                break;
+                            }
+                        }
+                }
+            }
+
+
+            /* Next import descriptor. */
+            pImpDesc++;
+        }
+
+
+        if (fOldProt)
+        {
+            DWORD fIgnore = 0;
+            fRc = VirtualProtect(pbProtRange, cbProtRange, fOldProt, &fIgnore);
+            kHlpAssertMsg(fRc, ("%u\n", GetLastError())); K_NOREF(fRc);
+        }
+    }
+
+}
+
+
+/**
+ * Creates a module from a native kLdr module handle.
+ *
+ * @returns Module w/ 1 reference on success, NULL on failure.
+ * @param   pLdrMod             The native kLdr module.
+ * @param   pszPath             The normalized path to the module.
+ * @param   cbPath              The module path length with terminator.
+ * @param   uHashPath           The module path hash.
+ * @param   fDoReplacements     Whether to do import replacements on this
+ *                              module.
+ */
+static PKWMODULE kwLdrModuleCreateForNativekLdrModule(PKLDRMOD pLdrMod, const char *pszPath, KSIZE cbPath, KU32 uHashPath,
+                                                      KBOOL fDoReplacements, PKWMODULE pVirtualApiMod)
+{
+    /*
+     * Create the entry.
+     */
+    PKWMODULE pMod = (PKWMODULE)kHlpAllocZ(sizeof(*pMod) + cbPath + cbPath * 2 * sizeof(wchar_t));
+    if (pMod)
+    {
+        pMod->pwszPath          = (wchar_t *)(pMod + 1);
+        kwStrToUtf16(pszPath, (wchar_t *)pMod->pwszPath, cbPath * 2);
+        pMod->pszPath           = (char *)kHlpMemCopy((char *)&pMod->pwszPath[cbPath * 2], pszPath, cbPath);
+        pMod->uHashPath         = uHashPath;
+        pMod->cRefs             = 1;
+        pMod->offFilename       = (KU16)(kHlpGetFilename(pszPath) - pszPath);
+        pMod->offFilenameW      = (KU16)(kwPathGetFilenameW(pMod->pwszPath) - pMod->pwszPath);
+        pMod->fExe              = K_FALSE;
+        pMod->fNative           = K_TRUE;
+        pMod->pLdrMod           = pLdrMod;
+        pMod->hOurMod           = (HMODULE)(KUPTR)pLdrMod->aSegments[0].MapAddress;
+        pMod->cbImage           = (KSIZE)kLdrModSize(pLdrMod);
+        pMod->iCrtSlot          = KU8_MAX;
+        pMod->fNeedReInit       = K_FALSE;
+        pMod->pszMsPdbSrvEndpoint = NULL;
+        pMod->fReInitOnMsPdbSrvEndpointChange = kHlpStrNICompAscii(&pMod->pszPath[pMod->offFilename], TUPLE("mspdb")) == 0;
+        pMod->pVirtualApiMod    = pVirtualApiMod;
+        if (pVirtualApiMod)
+            kwLdrModuleRetain(pVirtualApiMod);
+
+        if (fDoReplacements)
+        {
+            DWORD const dwSavedErr = GetLastError();
+            kwLdrModuleDoNativeImportReplacements(pMod);
+            SetLastError(dwSavedErr);
+        }
+
+        KWLDR_LOG(("New module: %p LB %#010x %s (native%s%s)\n",
+                   (KUPTR)pMod->pLdrMod->aSegments[0].MapAddress, kLdrModSize(pMod->pLdrMod), pMod->pszPath,
+                   pVirtualApiMod ? ", virtual api => " : "", pVirtualApiMod ? pVirtualApiMod->pszPath : ""));
+        g_cModules++;
+        return kwLdrModuleLink(pMod);
+    }
+    return NULL;
+}
+
+
+
+/**
+ * Creates a module using the native loader.
+ *
+ * @returns Module w/ 1 reference on success, NULL on failure.
+ * @param   pszPath             The normalized path to the module.
+ * @param   uHashPath           The module path hash.
+ * @param   fDoReplacements     Whether to do import replacements on this
+ *                              module.
+ */
+static PKWMODULE kwLdrModuleCreateNative(const char *pszPath, KU32 uHashPath, KBOOL fDoReplacements)
+{
+    PKLDRMOD pLdrMod;
+    int rc;
+
+    /*
+     * HACK ALERT! Make sure the application path is searched when looking for
+     * imports in the module we're loading.
+     */
+    /** @todo improve on this hack!  */
+    PKWMODULE pExe = g_Sandbox.pTool ? g_Sandbox.pTool->u.Sandboxed.pExe : NULL;
+    if (pExe)
+    {
+        /* HACK ALERT! */
+        wchar_t *pwzFilename = (wchar_t *)&pExe->pwszPath[pExe->offFilenameW];
+        wchar_t wcSaved = pExe->pwszPath[pExe->offFilenameW];
+        *pwzFilename = '\0';
+        if (!SetDllDirectoryW(pExe->pwszPath))
+            kwErrPrintf("SetDllDirectoryW failed: %u\n", GetLastError());
+        KW_LOG(("kwLdrModuleCreateNative: Applied SetDllDirectoryW hack (%ls)\n", pExe->pwszPath));
+        *pwzFilename = wcSaved;
+    }
+    else
+        KW_LOG(("kwLdrModuleCreateNative: Warning! Too early for SetDllDirectoryW hack\n"));
+
+
+    /*
+     * Load the library and create a module structure for it.
+     */
+    rc = kLdrModOpenNative(pszPath, KLDRMOD_OPEN_FLAGS_NATIVE_ALLOW_INIT_TERM, &pLdrMod);
+    if (rc == 0)
+    {
+        KSIZE     cchPath = kHlpStrLen(pszPath);
+        PKWMODULE pMod = kwLdrModuleCreateForNativekLdrModule(pLdrMod, pszPath, cchPath + 1, uHashPath,
+                                                              fDoReplacements, NULL /*pVirtualApiMod*/);
+        if (pMod)
+            return pMod;
+        kLdrModClose(pLdrMod);
+    }
+    return NULL;
+}
+
+
+/**
+ * Checks if the given name could be a virtual API module or not.
+ */
+static KBOOL kwLdrIsVirtualApiModule(const char *pszName, KSIZE cchName)
+{
+    if (cchName <= 7)
+        return K_FALSE;
+    switch (*pszName)
+    {
+        default:
+            return K_FALSE;
+        case 'a':
+        case 'A':
+            if (pszName[1] != 'p' && pszName[1] != 'P')
+                return K_FALSE;
+            if (pszName[2] != 'i' && pszName[2] != 'I')
+                return K_FALSE;
+            break;
+        case 'e':
+        case 'E':
+            if (pszName[1] != 'x' && pszName[1] != 'X')
+                return K_FALSE;
+            if (pszName[2] != 't' && pszName[2] != 'T')
+                return K_FALSE;
+            break;
+    }
+    if (pszName[3] != '-')
+        return K_FALSE;
+    if (pszName[4] != 'm' && pszName[4] != 'M')
+        return K_FALSE;
+    if (pszName[5] != 's' && pszName[5] != 'S')
+        return K_FALSE;
+    if (pszName[6] != '-')
+        return K_FALSE;
+    return K_TRUE;
+}
+
+
+/**
+ * Try load what seems to be a virtual API DLL.
+ *
+ * This is a worker for kwLdrModuleResolveAndLookup and
+ * kwSandbox_Kernel32_LoadLibraryExA_VirtualApiModule.
+ *
+ * @returns Pointer to module on success, NULL on failure.
+ * @param   pszName             The name of the module.  This must be
+ *                              normalized already!
+ * @param   cchName             The length of the name.
+ */
+static PKWMODULE kwLdrModuleTryLoadVirtualDll(const char *pszName, KSIZE cchName)
+{
+    HMODULE     hModule;
+
+    /*
+     * Look it up in the hash table.
+     */
+    KU32 const  uHashPath = kwStrHash(pszName);
+    unsigned    idxHash   = uHashPath % K_ELEMENTS(g_apModules);
+    PKWMODULE   pMod      = g_apModules[idxHash];
+    if (pMod)
+    {
+        do
+        {
+            if (   pMod->uHashPath == uHashPath
+                && kHlpStrComp(pMod->pszPath, pszName) == 0)
+                return kwLdrModuleRetain(pMod);
+            pMod = pMod->pNextHash;
+        } while (pMod);
+    }
+
+    /*
+     * Not found. Try load it.
+     */
+    hModule = LoadLibraryA(pszName);
+    if (!hModule)
+    {
+        KWLDR_LOG(("kwLdrModuleTryLoadVirtualDll: %s failed (%u)\n", pszName, GetLastError()));
+        return NULL;
+    }
+
+    /*
+     * Loaded successfully.  Create a module for the real module.
+     */
+    pMod = kwLdrModuleForLoadedNativeByHandle(hModule, K_FALSE /*fEnsureCrtSlot*/, pszName);
+    if (pMod)
+    {
+        /* Create a module for the virtual API name too, unless it is actually a real DLL. */
+        if (stricmp(&pMod->pszPath[pMod->offFilename], pszName) != 0)
+        {
+            PKLDRMOD pLdrMod;
+            int rc = kLdrModOpenNativeByHandle((KUPTR)hModule, KLDRMOD_OPEN_FLAGS_NATIVE_ALLOW_INIT_TERM, &pLdrMod);
+            if (rc == 0)
+            {
+                PKWMODULE pVirtMod = kwLdrModuleCreateForNativekLdrModule(pLdrMod, pszName, cchName + 1, kwStrHash(pszName),
+                                                                          K_FALSE /*fDoReplacements*/, pMod /*pVirtualApiMod*/);
+                if (pVirtMod)
+                {
+                    kwLdrModuleRelease(pMod);
+                    pMod = pVirtMod;
+                }
+                else
+                {
+                    kLdrModClose(pLdrMod);
+                    kwErrPrintf("out of memory\n");
+                }
+            }
+            else
+                kwErrPrintf("kLdrModOpenNativeByHandle failed for %p / '%s': %d\n", hModule, pszName, rc);
+        }
+        else
+        {
+            KWLDR_LOG(("kwLdrModuleTryLoadVirtualDll: %s -> %s - A real DLL!\n", pszName, pMod->pszPath));
+            /* HACK ALERT! If api-ms-win-crt-* find ucrtbase.dll and attach it as the
+                           real module as we cannot make replacements in the virtual
+                           API set forward DLLs. */
+            /** @todo Find a way of scanning the exports and collect forwarder DLLs and
+             *        imported DLLs. kLdrModEnumSymbols()? */
+            if (   pMod->pVirtualApiMod == NULL
+                && kHlpStrNICompAscii(pszName, TUPLE("api-ms-win-crt-")) == 0)
+            {
+                HMODULE hModReal = GetModuleHandleW(L"ucrtbase.dll");
+                if (hModReal)
+                {
+                    PKWMODULE pRealMod = kwLdrModuleForLoadedNativeByHandle(hModReal, K_TRUE /*fEnsureCrtSlot*/, "ucrtbase.dll");
+                    if (pRealMod)
+                    {
+                        KWLDR_LOG(("kwLdrModuleTryLoadVirtualDll: Linking %s to '%s'.\n", pszName, pRealMod->pszPath));
+                        pMod->pVirtualApiMod = pRealMod;
+                    }
+                    else
+                        KWLDR_LOG(("kwLdrModuleTryLoadVirtualDll: kwLdrModuleForLoadedNativeByHandle failed for ucrtbase.dll/%s!\n", pszName));
+                }
+                else
+                    KWLDR_LOG(("kwLdrModuleTryLoadVirtualDll: no ucrtbase.dll found for %s!\n", pszName));
+            }
+        }
+    }
+
+    return pMod;
+}
+
+
+/**
+ * Sets up the quick zero & copy tables for the non-native module.
+ *
+ * This is a worker for kwLdrModuleCreateNonNative.
+ *
+ * @param   pMod                The module.
+ */
+static void kwLdrModuleCreateNonNativeSetupQuickZeroAndCopy(PKWMODULE pMod)
+{
+    PCKLDRSEG   paSegs = pMod->pLdrMod->aSegments;
+    KU32        cSegs  = pMod->pLdrMod->cSegments;
+    KU32        iSeg;
+
+    KWLDR_LOG(("Setting up quick zero & copy for %s:\n", pMod->pszPath));
+    pMod->u.Manual.cQuickCopyChunks = 0;
+    pMod->u.Manual.cQuickZeroChunks = 0;
+
+    for (iSeg = 0; iSeg < cSegs; iSeg++)
+        switch (paSegs[iSeg].enmProt)
+        {
+            case KPROT_READWRITE:
+            case KPROT_WRITECOPY:
+            case KPROT_EXECUTE_READWRITE:
+            case KPROT_EXECUTE_WRITECOPY:
+                if (paSegs[iSeg].cbMapped)
+                {
+                    KU32 iChunk = pMod->u.Manual.cQuickCopyChunks;
+                    if (iChunk < K_ELEMENTS(pMod->u.Manual.aQuickCopyChunks))
+                    {
+                        /*
+                         * Check for trailing zero words.
+                         */
+                        KSIZE cbTrailingZeros;
+                        if (   paSegs[iSeg].cbMapped >= 64 * 2 * sizeof(KSIZE)
+                            && (paSegs[iSeg].cbMapped & 7) == 0
+                            && pMod->u.Manual.cQuickZeroChunks < K_ELEMENTS(pMod->u.Manual.aQuickZeroChunks) )
+                        {
+                            KSIZE const *pauNatural   = (KSIZE const *)&pMod->u.Manual.pbCopy[(KSIZE)paSegs[iSeg].RVA];
+                            KSIZE        cNatural     = paSegs[iSeg].cbMapped / sizeof(KSIZE);
+                            KSIZE        idxFirstZero = cNatural;
+                            while (idxFirstZero > 0)
+                                if (pauNatural[--idxFirstZero] == 0)
+                                { /* likely */ }
+                                else
+                                {
+                                    idxFirstZero++;
+                                    break;
+                                }
+                            cbTrailingZeros = (cNatural - idxFirstZero) * sizeof(KSIZE);
+                            if (cbTrailingZeros < 128)
+                                cbTrailingZeros = 0;
+                        }
+                        else
+                            cbTrailingZeros = 0;
+
+                        /*
+                         * Add quick copy entry.
+                         */
+                        if (cbTrailingZeros < paSegs[iSeg].cbMapped)
+                        {
+                            pMod->u.Manual.aQuickCopyChunks[iChunk].pbDst    = &pMod->u.Manual.pbLoad[(KSIZE)paSegs[iSeg].RVA];
+                            pMod->u.Manual.aQuickCopyChunks[iChunk].pbSrc    = &pMod->u.Manual.pbCopy[(KSIZE)paSegs[iSeg].RVA];
+                            pMod->u.Manual.aQuickCopyChunks[iChunk].cbToCopy = paSegs[iSeg].cbMapped - cbTrailingZeros;
+                            pMod->u.Manual.cQuickCopyChunks = (KU8)(iChunk + 1);
+                            KWLDR_LOG(("aQuickCopyChunks[%u]: %#p LB %#" KSIZE_PRI " <- %p (%*.*s)\n", iChunk,
+                                       pMod->u.Manual.aQuickCopyChunks[iChunk].pbDst,
+                                       pMod->u.Manual.aQuickCopyChunks[iChunk].cbToCopy,
+                                       pMod->u.Manual.aQuickCopyChunks[iChunk].pbSrc,
+                                       paSegs[iSeg].cchName, paSegs[iSeg].cchName, paSegs[iSeg].pchName));
+                        }
+
+                        /*
+                         * Add quick zero entry.
+                         */
+                        if (cbTrailingZeros)
+                        {
+                            KU32 iZero = pMod->u.Manual.cQuickZeroChunks;
+                            pMod->u.Manual.aQuickZeroChunks[iZero].pbDst    = pMod->u.Manual.aQuickCopyChunks[iChunk].pbDst
+                                                                            + pMod->u.Manual.aQuickCopyChunks[iChunk].cbToCopy;
+                            pMod->u.Manual.aQuickZeroChunks[iZero].cbToZero = cbTrailingZeros;
+                            pMod->u.Manual.cQuickZeroChunks = (KU8)(iZero + 1);
+                            KWLDR_LOG(("aQuickZeroChunks[%u]: %#p LB %#" KSIZE_PRI " <- zero (%*.*s)\n", iZero,
+                                       pMod->u.Manual.aQuickZeroChunks[iZero].pbDst,
+                                       pMod->u.Manual.aQuickZeroChunks[iZero].cbToZero,
+                                       paSegs[iSeg].cchName, paSegs[iSeg].cchName, paSegs[iSeg].pchName));
+                        }
+                    }
+                    else
+                    {
+                        /*
+                         * We're out of quick copy table entries, so just copy the whole darn thing.
+                         * We cannot 104% guarantee that the segments are in mapping order, so this is simpler.
+                         */
+                        kHlpAssertFailed();
+                        pMod->u.Manual.aQuickCopyChunks[0].pbDst    = pMod->u.Manual.pbLoad;
+                        pMod->u.Manual.aQuickCopyChunks[0].pbSrc    = pMod->u.Manual.pbCopy;
+                        pMod->u.Manual.aQuickCopyChunks[0].cbToCopy = pMod->cbImage;
+                        pMod->u.Manual.cQuickCopyChunks = 1;
+                        KWLDR_LOG(("Quick copy not possible!\n"));
+                        return;
+                    }
+                }
+                break;
+
+            default:
+                break;
+        }
+}
+
+
+/**
+ * Called from the TLS allocation DLL when ever the native loader wants to issue
+ * a TLS callback after the initial kwLdrTlsAllocationHook callout.
+ *
+ * @param   hDll            The DLL handle.
+ * @param   dwReason        The callback reason.
+ * @param   pvContext       Some context value that seems to always be NULL.
+ * @param   pMod            Out internal module.
+ */
+static void kwLdrTlsNativeLoaderCallback(void *hDll, DWORD dwReason, void *pvContext, PKWMODULE pMod)
+{
+    if (   pMod
+        && pMod->u.Manual.enmState == KWMODSTATE_READY)
+    {
+        KWLDR_LOG(("kwLdrTlsNativeLoaderCallback: hDll=%p dwReason=%#x pvContext=%p pMod=%p\n",
+                   hDll, dwReason, pvContext, pMod));
+        if (pMod->u.Manual.cTlsCallbacks)
+        {
+            PIMAGE_TLS_CALLBACK *ppfnCallback = (PIMAGE_TLS_CALLBACK *)&pMod->u.Manual.pbLoad[pMod->u.Manual.offTlsCallbacks];
+            do
+            {
+                KWLDR_LOG(("kwLdrTlsNativeLoaderCallback: Calling TLS callback %p(%p, %#x, %p) - %s\n",
+                           *ppfnCallback, pMod->hOurMod, dwReason, pvContext, pMod->pszPath));
+                (*ppfnCallback)(pMod->hOurMod, dwReason, pvContext);
+                ppfnCallback++;
+            } while (*ppfnCallback);
+        }
+    }
+    else
+        KWLDR_LOG(("kwLdrTlsNativeLoaderCallback: hDll=%p dwReason=%#x pvContext=%p pMod=%p - skipped\n",
+                   hDll, dwReason, pvContext, pMod));
+}
+
+
+/**
+ * Called from TLS allocation DLL during DLL_PROCESS_ATTACH.
+ *
+ * @returns Address of the callback function (kwLdrTlsNativeLoaderCallback).
+ * @param   hDll                The DLL handle.
+ * @param   idxTls              The allocated TLS index.
+ * @param   pabInitData         The init data in the TLS allocation DLL
+ *                              (g_abInitData).
+ * @param   ppWorkerModuleVar   Pointer to the variable holding the pMod
+ *                              callback parameter value (g_pvWorkerModule).
+ *
+ * @see     KWLDRTLSALLOCATIONHOOK in kWorkerTlsXxxxK.c
+ */
+__declspec(dllexport) KUPTR kwLdrTlsAllocationHook(void *hDll, ULONG idxTls, KU8 *pabInitData, PKWMODULE *ppWorkerModuleVar)
+{
+    /*
+     * Do the module initialization thing first.
+     */
+    PKWMODULE pMod = g_pModPendingTlsAlloc;
+    if (pMod)
+    {
+        if (   pMod->u.Manual.idxTls         == KU32_MAX
+            && pMod->u.Manual.pabTlsInitData == NULL)
+        {
+            pMod->u.Manual.idxTls               = idxTls;
+            pMod->u.Manual.pabTlsInitData       = pabInitData;
+            pMod->u.Manual.ppTlsWorkerModuleVar = ppWorkerModuleVar;
+            KWLDR_LOG(("kwLdrTlsAllocationHook: idxTls=%d (%#x) for %s\n", idxTls, idxTls, pMod->pszPath));
+
+#if 0 /** @todo this doesn't work W10 18363   */
+            {
+                /*
+                 * Try sabotage the DLL name so we can load this module again.
+                 */
+                PPEB        pPeb = kwSandboxGetProcessEnvironmentBlock();
+                LIST_ENTRY *pHead;
+                LIST_ENTRY *pCur;
+
+                pHead = &pPeb->Ldr->InMemoryOrderModuleList;
+                for (pCur = pHead->Blink; pCur != pHead; pCur = pCur->Blink)
+                {
+                    LDR_DATA_TABLE_ENTRY *pMte;
+                    pMte = (LDR_DATA_TABLE_ENTRY *)((KUPTR)pCur - K_OFFSETOF(LDR_DATA_TABLE_ENTRY, InMemoryOrderLinks));
+                    if (((KUPTR)pMte->DllBase & ~(KUPTR)31) == ((KUPTR)hDll & ~(KUPTR)31))
+                    {
+                        PUNICODE_STRING pStr = &pMte->FullDllName;
+                        KSIZE off = pStr->Length / sizeof(pStr->Buffer[0]);
+                        pStr->Buffer[--off]++;
+                        pStr->Buffer[--off]++;
+                        pStr->Buffer[--off]++;
+                        KWLDR_LOG(("kwLdrTlsAllocationHook: patched the MTE (%p) for %p\n", pMte, hDll));
+                        break;
+                    }
+                }
+            }
+#endif
+
+            /*
+             * Don't return a callback function unless the module has callbacks to service.
+             */
+            if (pMod->u.Manual.cTlsCallbacks > 0)
+            {
+                *ppWorkerModuleVar = pMod;
+                return (KUPTR)kwLdrTlsNativeLoaderCallback;
+            }
+            return 0;
+        }
+        KWLDR_LOG(("kwLdrTlsAllocationHook: WTF? pMod=%p: idxTls=%#x pabTlsInitData=%p\n",
+                   pMod, pMod->u.Manual.idxTls, pMod->u.Manual.pabTlsInitData));
+    }
+    return 0;
+}
+
+
+/**
+ * Allocates and initializes TLS variables.
+ *
+ * @returns 0 on success, non-zero failure.
+ * @param   pMod                The module.
+ */
+static int kwLdrModuleCreateNonNativeSetupTls(PKWMODULE pMod)
+{
+    KU8                        *pbImg = (KU8 *)pMod->u.Manual.pbCopy;
+    IMAGE_NT_HEADERS const     *pNtHdrs;
+    IMAGE_DATA_DIRECTORY const *pTlsDir;
+
+    if (((PIMAGE_DOS_HEADER)pbImg)->e_magic == IMAGE_DOS_SIGNATURE)
+        pNtHdrs = (PIMAGE_NT_HEADERS)&pbImg[((PIMAGE_DOS_HEADER)pbImg)->e_lfanew];
+    else
+        pNtHdrs = (PIMAGE_NT_HEADERS)pbImg;
+    kHlpAssert(pNtHdrs->Signature == IMAGE_NT_SIGNATURE);
+
+    pTlsDir = &pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_TLS];
+    if (pTlsDir->Size >= sizeof(IMAGE_TLS_DIRECTORY))
+    {
+        PIMAGE_TLS_DIRECTORY const  paEntries = (PIMAGE_TLS_DIRECTORY)&pbImg[pTlsDir->VirtualAddress];
+        KU32 const                  cEntries  = pTlsDir->Size / sizeof(IMAGE_TLS_DIRECTORY);
+        KU32                        iEntry;
+        KU32                        iTlsDll;
+        KU32                        iTlsDllSub;
+        KUPTR                       offIndex;
+        KUPTR                       offCallbacks;
+        KUPTR const                *puCallbacks;
+        KSIZE                       cbData;
+        const wchar_t              *pwszTlsDll;
+        HMODULE                     hmodTlsDll;
+
+        /*
+         * Check and log.
+         */
+        for (iEntry = 0; iEntry < cEntries; iEntry++)
+        {
+            KUPTR        offIndex     = (KUPTR)paEntries[iEntry].AddressOfIndex     - (KUPTR)pMod->u.Manual.pbLoad;
+            KUPTR        offCallbacks = (KUPTR)paEntries[iEntry].AddressOfCallBacks - (KUPTR)pMod->u.Manual.pbLoad;
+            KUPTR const *puCallbacks  = (KUPTR const *)&pbImg[offCallbacks];
+            KWLDR_LOG(("TLS DIR #%u: %#x-%#x idx=@%#x (%#x) callbacks=@%#x (%#x) cbZero=%#x flags=%#x\n",
+                       iEntry, paEntries[iEntry].StartAddressOfRawData, paEntries[iEntry].EndAddressOfRawData,
+                       paEntries[iEntry].AddressOfIndex, offIndex, paEntries[iEntry].AddressOfCallBacks, offCallbacks,
+                       paEntries[iEntry].SizeOfZeroFill, paEntries[iEntry].Characteristics));
+
+            if (offIndex >= pMod->cbImage)
+            {
+                kwErrPrintf("TLS entry #%u in %s has an invalid index address: %p, RVA %p, image size %#x\n",
+                            iEntry, pMod->pszPath, paEntries[iEntry].AddressOfIndex, offIndex, pMod->cbImage);
+                return -1;
+            }
+            if (offCallbacks >= pMod->cbImage)
+            {
+                kwErrPrintf("TLS entry #%u in %s has an invalid callbacks address: %p, RVA %p, image size %#x\n",
+                            iEntry, pMod->pszPath, paEntries[iEntry].AddressOfCallBacks, offCallbacks, pMod->cbImage);
+                return -1;
+            }
+            while (*puCallbacks != 0)
+            {
+                KWLDR_LOG(("TLS DIR #%u:   callback %p, RVA %#x\n",
+                            iEntry, *puCallbacks, *puCallbacks - (KUPTR)pMod->u.Manual.pbLoad));
+                puCallbacks++;
+            }
+            if (paEntries[iEntry].Characteristics > IMAGE_SCN_ALIGN_16BYTES)
+            {
+                kwErrPrintf("TLS entry #%u in %s has an unsupported alignment restriction: %#x\n",
+                            iEntry, pMod->pszPath, paEntries[iEntry].Characteristics);
+                return -1;
+            }
+        }
+
+        if (cEntries > 1)
+        {
+            kwErrPrintf("More than one TLS directory entry in %s: %u\n", pMod->pszPath, cEntries);
+            return -1;
+        }
+
+        /*
+         * Make the allocation by loading a new instance of one of the TLS dlls.
+         * The DLL will make a call to kwLdrTlsAllocationHook.
+         */
+        offIndex     = (KUPTR)paEntries[0].AddressOfIndex     - (KUPTR)pMod->u.Manual.pbLoad;
+        offCallbacks = (KUPTR)paEntries[0].AddressOfCallBacks - (KUPTR)pMod->u.Manual.pbLoad;
+        puCallbacks  = (KUPTR const *)&pbImg[offCallbacks];
+        cbData = paEntries[0].SizeOfZeroFill + (paEntries[0].EndAddressOfRawData - paEntries[0].StartAddressOfRawData);
+
+        /** @todo find better strategy here. Like temporary copy or whatever when
+         *        there is more than a single user. */
+        for (iTlsDll = 0; cbData > g_aTlsDlls[iTlsDll].cbTls;)
+            if (++iTlsDll >= K_ELEMENTS(g_aTlsDlls))
+            {
+                kwErrPrintf("TLS data size in %s is too big: %u (%#p), max 512KB\n", pMod->pszPath, (unsigned)cbData, cbData);
+                return -1;
+            }
+        for (iTlsDllSub = 0; g_aTlsDlls[iTlsDll].paDlls[iTlsDllSub].fUsed;)
+            if (++iTlsDllSub >= g_aTlsDlls[iTlsDll].cDlls)
+            {
+                kwErrPrintf("No unused TLS DLLs for %s of size %u!\n", pMod->pszPath, (unsigned)cbData);
+                return -1;
+            }
+
+        g_aTlsDlls[iTlsDll].paDlls[iTlsDllSub].fUsed = K_TRUE;
+        pwszTlsDll = g_aTlsDlls[iTlsDll].paDlls[iTlsDllSub].pwszName;
+
+        pMod->u.Manual.pabTlsInitData       = NULL;
+        pMod->u.Manual.ppTlsWorkerModuleVar = NULL;
+        pMod->u.Manual.idxTls               = KU32_MAX;
+
+        pMod->u.Manual.offTlsInitData = (KU32)((KUPTR)paEntries[0].StartAddressOfRawData - (KUPTR)pMod->u.Manual.pbLoad);
+        pMod->u.Manual.cbTlsInitData  = (KU32)(paEntries[0].EndAddressOfRawData - paEntries[0].StartAddressOfRawData);
+        pMod->u.Manual.cbTlsAlloc     = (KU32)cbData;
+        pMod->u.Manual.cTlsCallbacks  = 0;
+        while (puCallbacks[pMod->u.Manual.cTlsCallbacks] != 0)
+            pMod->u.Manual.cTlsCallbacks++;
+        pMod->u.Manual.offTlsCallbacks = pMod->u.Manual.cTlsCallbacks ? (KU32)offCallbacks : KU32_MAX;
+
+        g_pModPendingTlsAlloc = pMod;
+        hmodTlsDll = LoadLibraryExW(pwszTlsDll, NULL /*hFile*/, 0);
+        g_pModPendingTlsAlloc = NULL;
+        if (hmodTlsDll == NULL)
+        {
+            kwErrPrintf("TLS allocation failed for '%s': LoadLibraryExW(%ls) -> %u\n", pMod->pszPath, pwszTlsDll, GetLastError());
+            return -1;
+        }
+        if (pMod->u.Manual.idxTls == KU32_MAX)
+        {
+            kwErrPrintf("TLS allocation failed for '%s': idxTls = KU32_MAX\n", pMod->pszPath, GetLastError());
+            return -1;
+        }
+
+        *(KU32 *)&pMod->u.Manual.pbCopy[offIndex] = pMod->u.Manual.idxTls;
+        KWLDR_LOG(("kwLdrModuleCreateNonNativeSetupTls: idxTls=%d hmodTlsDll=%p (%ls) cbData=%#x pabTlsInitData=%p\n",
+                   pMod->u.Manual.idxTls, hmodTlsDll, pwszTlsDll, cbData, pMod->u.Manual.pabTlsInitData));
+
+        kHlpAssert(pMod->u.Manual.pabTlsInitData);
+        if (pMod->u.Manual.pabTlsInitData && pMod->u.Manual.cbTlsInitData)
+            kHlpMemCopy(pMod->u.Manual.pabTlsInitData, &pMod->u.Manual.pbCopy[pMod->u.Manual.offTlsInitData],
+                        pMod->u.Manual.cbTlsInitData);
+    }
+    return 0;
+}
+
+
+/**
+ * Creates a module using the our own loader.
+ *
+ * @returns Module w/ 1 reference on success, NULL on failure.
+ * @param   pszPath             The normalized path to the module.
+ * @param   uHashPath           The module path hash.
+ * @param   fExe                K_TRUE if this is an executable image, K_FALSE
+ *                              if not.  Executable images does not get entered
+ *                              into the global module table.
+ * @param   pExeMod             The executable module of the process (for
+ *                              resolving imports).  NULL if fExe is set.
+ * @param   pszSearchPath       The PATH to search for imports.  Can be NULL.
+ */
+static PKWMODULE kwLdrModuleCreateNonNative(const char *pszPath, KU32 uHashPath, KBOOL fExe,
+                                            PKWMODULE pExeMod, const char *pszSearchPath)
+{
+    /*
+     * Open the module and check the type.
+     */
+    PKLDRMOD pLdrMod;
+    int rc = kLdrModOpen(pszPath, 0 /*fFlags*/, (KCPUARCH)K_ARCH, &pLdrMod);
+    if (rc == 0)
+    {
+        switch (pLdrMod->enmType)
+        {
+            case KLDRTYPE_EXECUTABLE_FIXED:
+            case KLDRTYPE_EXECUTABLE_RELOCATABLE:
+            case KLDRTYPE_EXECUTABLE_PIC:
+                if (!fExe)
+                    rc = KERR_GENERAL_FAILURE;
+                break;
+
+            case KLDRTYPE_SHARED_LIBRARY_RELOCATABLE:
+            case KLDRTYPE_SHARED_LIBRARY_PIC:
+            case KLDRTYPE_SHARED_LIBRARY_FIXED:
+                if (fExe)
+                    rc = KERR_GENERAL_FAILURE;
+                break;
+
+            default:
+                rc = KERR_GENERAL_FAILURE;
+                kwErrPrintf("kwLdrModuleCreateNonNative: Unsupported module type %d (%s)!\n", pLdrMod->enmType, pszPath);
+                break;
+        }
+        if (rc == 0)
+        {
+            KI32 cImports = kLdrModNumberOfImports(pLdrMod, NULL /*pvBits*/);
+            if (cImports >= 0)
+            {
+                /*
+                 * Create the entry.
+                 */
+                KSIZE     cbPath = kHlpStrLen(pszPath) + 1;
+                PKWMODULE pMod   = (PKWMODULE)kHlpAllocZ(sizeof(*pMod)
+                                                         + sizeof(pMod) * cImports
+                                                         + cbPath
+                                                         + cbPath * 2 * sizeof(wchar_t));
+                if (pMod)
+                {
+                    KBOOL fFixed;
+
+                    pMod->cRefs         = 1;
+                    pMod->offFilename   = (KU16)(kHlpGetFilename(pszPath) - pszPath);
+                    pMod->uHashPath     = uHashPath;
+                    pMod->fExe          = fExe;
+                    pMod->fNative       = K_FALSE;
+                    pMod->pLdrMod       = pLdrMod;
+                    pMod->iCrtSlot      = KU8_MAX;
+                    pMod->fNeedReInit   = K_FALSE;
+                    pMod->fReInitOnMsPdbSrvEndpointChange = K_FALSE;
+                    pMod->pszMsPdbSrvEndpoint       = NULL;
+                    pMod->u.Manual.cImpMods         = (KU32)cImports;
+#if defined(KBUILD_OS_WINDOWS) && defined(KBUILD_ARCH_AMD64)
+                    pMod->u.Manual.fRegisteredFunctionTable = K_FALSE;
+#endif
+                    pMod->u.Manual.fUseLdBuf        = K_FALSE;
+                    pMod->u.Manual.fCanDoQuick      = K_FALSE;
+                    pMod->u.Manual.cQuickZeroChunks = 0;
+                    pMod->u.Manual.cQuickCopyChunks = 0;
+                    pMod->u.Manual.pabTlsInitData       = NULL;
+                    pMod->u.Manual.ppTlsWorkerModuleVar = NULL;
+                    pMod->u.Manual.idxTls           = KU32_MAX;
+                    pMod->u.Manual.offTlsInitData   = KU32_MAX;
+                    pMod->u.Manual.cbTlsInitData    = 0;
+                    pMod->u.Manual.cbTlsAlloc       = 0;
+                    pMod->u.Manual.cTlsCallbacks    = 0;
+                    pMod->u.Manual.offTlsCallbacks  = 0;
+                    pMod->pszPath       = (char *)kHlpMemCopy(&pMod->u.Manual.apImpMods[cImports + 1], pszPath, cbPath);
+                    pMod->pwszPath      = (wchar_t *)(pMod->pszPath + cbPath + (cbPath & 1));
+                    kwStrToUtf16(pMod->pszPath, (wchar_t *)pMod->pwszPath, cbPath * 2);
+                    pMod->offFilenameW  = (KU16)(kwPathGetFilenameW(pMod->pwszPath) - pMod->pwszPath);
+
+                    /*
+                     * Figure out where to load it and get memory there.
+                     */
+                    fFixed = pLdrMod->enmType == KLDRTYPE_EXECUTABLE_FIXED
+                          || pLdrMod->enmType == KLDRTYPE_SHARED_LIBRARY_FIXED;
+                    pMod->u.Manual.pbLoad = fFixed ? (KU8 *)(KUPTR)pLdrMod->aSegments[0].LinkAddress : NULL;
+                    pMod->cbImage = (KSIZE)kLdrModSize(pLdrMod);
+                    if (   !fFixed
+                        || pLdrMod->enmType != KLDRTYPE_EXECUTABLE_FIXED /* only allow fixed executables */
+                        || (KUPTR)pMod->u.Manual.pbLoad - (KUPTR)g_abDefLdBuf >= sizeof(g_abDefLdBuf)
+                        || sizeof(g_abDefLdBuf) - (KUPTR)pMod->u.Manual.pbLoad - (KUPTR)g_abDefLdBuf < pMod->cbImage)
+                        rc = kHlpPageAlloc((void **)&pMod->u.Manual.pbLoad, pMod->cbImage, KPROT_EXECUTE_READWRITE, fFixed);
+                    else
+                        pMod->u.Manual.fUseLdBuf = K_TRUE;
+                    if (rc == 0)
+                    {
+                        rc = kHlpPageAlloc(&pMod->u.Manual.pbCopy, pMod->cbImage, KPROT_READWRITE, K_FALSE);
+                        if (rc == 0)
+                        {
+                            KI32 iImp;
+                            KU32 cchReloads;
+
+                            /*
+                             * Link the module (unless it's an executable image) and process the imports.
+                             */
+                            pMod->hOurMod = (HMODULE)pMod->u.Manual.pbLoad;
+                            kwLdrModuleLink(pMod);
+                            KWLDR_LOG(("New module: %p LB %#010x %s (kLdr)\n",
+                                       pMod->u.Manual.pbLoad, pMod->cbImage, pMod->pszPath));
+                            KWLDR_LOG(("TODO: .reload /f %s=%p\n", pMod->pszPath, pMod->u.Manual.pbLoad));
+                            kwDebuggerPrintf("TODO: .reload /f %s=%p\n", pMod->pszPath, pMod->u.Manual.pbLoad);
+                            cchReloads = g_cchReloads;
+                            if (cchReloads + 80 < sizeof(g_szReloads))
+                            {
+                                cchReloads += _snprintf(&g_szReloads[cchReloads], sizeof(g_szReloads) - cchReloads,
+                                                        "%s.reload /f %s=%p\n", cchReloads ? "; " : "",
+                                                        pMod->pszPath, pMod->u.Manual.pbLoad);
+                                g_cchReloads = cchReloads;
+                            }
+
+                            for (iImp = 0; iImp < cImports; iImp++)
+                            {
+                                char szName[1024];
+                                rc = kLdrModGetImport(pMod->pLdrMod, NULL /*pvBits*/, iImp, szName, sizeof(szName));
+                                if (rc == 0)
+                                {
+                                    rc = kwLdrModuleResolveAndLookup(szName, pExeMod, pMod, pszSearchPath,
+                                                                     &pMod->u.Manual.apImpMods[iImp]);
+                                    if (rc == 0)
+                                        continue;
+                                }
+                                kwErrPrintf("Error getting import '%s' for '%s': %d (%u)\n",
+                                            szName, pMod->pszPath, rc, GetLastError());
+                                break;
+                            }
+
+                            if (rc == 0)
+                            {
+                                rc = kLdrModGetBits(pLdrMod, pMod->u.Manual.pbCopy, (KUPTR)pMod->u.Manual.pbLoad,
+                                                    kwLdrModuleGetImportCallback, pMod);
+                                if (rc == 0)
+                                {
+#if defined(KBUILD_OS_WINDOWS) && defined(KBUILD_ARCH_AMD64)
+                                    /*
+                                     * Find the function table.  No validation here because the
+                                     * loader did that already, right...
+                                     */
+                                    KU8                        *pbImg = (KU8 *)pMod->u.Manual.pbCopy;
+                                    IMAGE_NT_HEADERS const     *pNtHdrs;
+                                    IMAGE_DATA_DIRECTORY const *pXcptDir;
+                                    if (((PIMAGE_DOS_HEADER)pbImg)->e_magic == IMAGE_DOS_SIGNATURE)
+                                        pNtHdrs = (PIMAGE_NT_HEADERS)&pbImg[((PIMAGE_DOS_HEADER)pbImg)->e_lfanew];
+                                    else
+                                        pNtHdrs = (PIMAGE_NT_HEADERS)pbImg;
+                                    pXcptDir = &pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXCEPTION];
+                                    kHlpAssert(pNtHdrs->Signature == IMAGE_NT_SIGNATURE);
+                                    if (pXcptDir->Size > 0)
+                                    {
+                                        pMod->u.Manual.cFunctions  = pXcptDir->Size / sizeof(pMod->u.Manual.paFunctions[0]);
+                                        kHlpAssert(   pMod->u.Manual.cFunctions * sizeof(pMod->u.Manual.paFunctions[0])
+                                                   == pXcptDir->Size);
+                                        pMod->u.Manual.paFunctions = (PRUNTIME_FUNCTION)&pbImg[pXcptDir->VirtualAddress];
+                                    }
+                                    else
+                                    {
+                                        pMod->u.Manual.cFunctions  = 0;
+                                        pMod->u.Manual.paFunctions = NULL;
+                                    }
+#endif
+
+                                    kwLdrModuleCreateNonNativeSetupQuickZeroAndCopy(pMod);
+
+                                    rc = kwLdrModuleCreateNonNativeSetupTls(pMod);
+                                    if (rc == 0)
+                                    {
+                                        /*
+                                         * Final finish.
+                                         */
+                                        pMod->u.Manual.pvBits = pMod->u.Manual.pbCopy;
+                                        pMod->u.Manual.enmState = KWMODSTATE_NEEDS_BITS;
+                                        pMod->u.Manual.enmReInitState = KWMODSTATE_NEEDS_BITS;
+                                        if (   g_Sandbox.pTool
+                                            && (   g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_CL
+                                                || g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_LINK)
+                                            && !pMod->fExe)
+                                            pMod->u.Manual.enmReInitState = KWMODSTATE_READY;
+                                        g_cModules++;
+                                        g_cNonNativeModules++;
+                                        return pMod;
+                                    }
+                                    kwErrPrintf("kwLdrModuleCreateNonNativeSetupTls failed with %d for %s\n", rc, pMod->pszPath);
+                                }
+                                else
+                                    kwErrPrintf("kLdrModGetBits failed for %s: %#x (%d)\n", pszPath, rc, rc);
+                            }
+
+                            kwLdrModuleRelease(pMod);
+                            return NULL;
+                        }
+
+                        kHlpPageFree(pMod->u.Manual.pbLoad, pMod->cbImage);
+                        kwErrPrintf("Failed to allocate %#x bytes\n", pMod->cbImage);
+                    }
+                    else if (fFixed)
+                        kwErrPrintf("Failed to allocate %#x bytes at %p\n",
+                                    pMod->cbImage, (void *)(KUPTR)pLdrMod->aSegments[0].LinkAddress);
+                    else
+                        kwErrPrintf("Failed to allocate %#x bytes\n", pMod->cbImage);
+                }
+                else
+                    kwErrPrintf("kwLdrModuleCreateNonNative: out of memory!\n");
+            }
+            else
+                kwErrPrintf("kwLdrModuleCreateNonNative: kLdrModNumberOfImports failed for '%s'\n", pszPath);
+        }
+        kLdrModClose(pLdrMod);
+    }
+    else
+        kwErrPrintf("kLdrOpen failed with %#x (%d) for %s\n", rc, rc, pszPath);
+    return NULL;
+}
+
+
+/** Implements FNKLDRMODGETIMPORT, used by kwLdrModuleCreate. */
+static int kwLdrModuleGetImportCallback(PKLDRMOD pMod, KU32 iImport, KU32 iSymbol, const char *pchSymbol, KSIZE cchSymbol,
+                                        const char *pszVersion, PKLDRADDR puValue, KU32 *pfKind, void *pvUser)
+{
+    PKWMODULE pCurMod = (PKWMODULE)pvUser;
+    PKWMODULE pImpMod = pCurMod->u.Manual.apImpMods[iImport];
+    int rc;
+    K_NOREF(pMod);
+
+    if (pImpMod->fNative)
+        rc = kLdrModQuerySymbol(pImpMod->pLdrMod, NULL /*pvBits*/, KLDRMOD_BASEADDRESS_MAP,
+                                iSymbol, pchSymbol, cchSymbol, pszVersion,
+                                NULL /*pfnGetForwarder*/, NULL /*pvUSer*/,
+                                puValue, pfKind);
+    else
+        rc = kLdrModQuerySymbol(pImpMod->pLdrMod, pImpMod->u.Manual.pvBits, (KUPTR)pImpMod->u.Manual.pbLoad,
+                                iSymbol, pchSymbol, cchSymbol, pszVersion,
+                                NULL /*pfnGetForwarder*/, NULL /*pvUSer*/,
+                                puValue, pfKind);
+    if (rc == 0)
+    {
+        KU32 i = g_cSandboxReplacements;
+        while (i-- > 0)
+            if (   g_aSandboxReplacements[i].cchFunction == cchSymbol
+                && kHlpMemComp(g_aSandboxReplacements[i].pszFunction, pchSymbol, cchSymbol) == 0)
+            {
+                if (   !g_aSandboxReplacements[i].pszModule
+                    || kHlpStrICompAscii(g_aSandboxReplacements[i].pszModule, &pImpMod->pszPath[pImpMod->offFilename]) == 0)
+                {
+                    if (   pCurMod->fExe
+                        || !g_aSandboxReplacements[i].fOnlyExe)
+                    {
+                        KWLDR_LOG(("replacing %s!%s\n",&pImpMod->pszPath[pImpMod->offFilename], g_aSandboxReplacements[i].pszFunction));
+                        if (!g_aSandboxReplacements[i].fCrtSlotArray)
+                            *puValue = g_aSandboxReplacements[i].pfnReplacement;
+                        else
+                        {
+                            if (pImpMod->iCrtSlot == KU8_MAX)
+                            {
+                                rc = kwLdrModuleCreateCrtSlot(pImpMod);
+                                if (rc)
+                                    KWLDR_LOG(("kwLdrModuleGetImportCallback: kwLdrModuleCreateCrtSlot failed: %d\n", rc));
+                            }
+                            *puValue = ((KUPTR *)g_aSandboxReplacements[i].pfnReplacement)[pImpMod->iCrtSlot];
+                        }
+                    }
+                    break;
+                }
+            }
+    }
+
+    //printf("iImport=%u (%s) %*.*s rc=%d\n", iImport, &pImpMod->pszPath[pImpMod->offFilename], cchSymbol, cchSymbol, pchSymbol, rc);
+    KWLDR_LOG(("iImport=%u (%s) %*.*s rc=%d\n", iImport, &pImpMod->pszPath[pImpMod->offFilename], cchSymbol, cchSymbol, pchSymbol, rc));
+    return rc;
+
+}
+
+
+/**
+ * Gets the main entrypoint for a module.
+ *
+ * @returns 0 on success, KERR on failure
+ * @param   pMod                The module.
+ * @param   puAddrMain          Where to return the address.
+ */
+static int kwLdrModuleQueryMainEntrypoint(PKWMODULE pMod, KUPTR *puAddrMain)
+{
+    KLDRADDR uLdrAddrMain;
+    int rc = kLdrModQueryMainEntrypoint(pMod->pLdrMod, pMod->u.Manual.pvBits, (KUPTR)pMod->u.Manual.pbLoad, &uLdrAddrMain);
+    if (rc == 0)
+    {
+        *puAddrMain = (KUPTR)uLdrAddrMain;
+        return 0;
+    }
+    return rc;
+}
+
+
+/**
+ * Whether to apply g_aSandboxNativeReplacements to the imports of this module.
+ *
+ * @returns K_TRUE/K_FALSE.
+ * @param   pszFilename         The filename (no path).
+ * @param   enmLocation         The location.
+ */
+static KBOOL kwLdrModuleShouldDoNativeReplacements(const char *pszFilename, KWLOCATION enmLocation)
+{
+    if (enmLocation != KWLOCATION_SYSTEM32)
+        return K_TRUE;
+    return kHlpStrNICompAscii(pszFilename, TUPLE("msvc"))            == 0
+        || kHlpStrNICompAscii(pszFilename, TUPLE("msdis"))           == 0
+        || kHlpStrNICompAscii(pszFilename, TUPLE("mspdb"))           == 0
+        || kHlpStrNICompAscii(pszFilename, TUPLE("vcruntime"))       == 0
+        || kHlpStrNICompAscii(pszFilename, TUPLE("ucrtbase"))        == 0
+        || kHlpStrNICompAscii(pszFilename, TUPLE("api-ms-win-crt-")) == 0
+#if 0 /* for debugging, only for debugging. */
+        || kHlpStrICompAscii(pszFilename, "c1.dll") == 0
+        || kHlpStrICompAscii(pszFilename, "c1xx.dll") == 0
+        || kHlpStrICompAscii(pszFilename, "c2.dll") == 0
+#endif
+        ;
+}
+
+
+/**
+ * Lazily initializes the g_pWinSys32 variable.
+ */
+static PKFSDIR kwLdrResolveWinSys32(void)
+{
+    KFSLOOKUPERROR  enmError;
+    PKFSDIR         pWinSys32;
+
+    /* Get the path first. */
+    char            szSystem32[MAX_PATH];
+    if (GetSystemDirectoryA(szSystem32, sizeof(szSystem32)) >= sizeof(szSystem32))
+    {
+        kwErrPrintf("GetSystemDirectory failed: %u\n", GetLastError());
+        strcpy(szSystem32, "C:\\Windows\\System32");
+    }
+
+    /* Look it up and verify it. */
+    pWinSys32 = (PKFSDIR)kFsCacheLookupA(g_pFsCache, szSystem32, &enmError);
+    if (pWinSys32)
+    {
+        if (pWinSys32->Obj.bObjType == KFSOBJ_TYPE_DIR)
+        {
+            g_pWinSys32 = pWinSys32;
+            return pWinSys32;
+        }
+
+        kwErrPrintf("System directory '%s' isn't of 'DIR' type: %u\n", szSystem32, g_pWinSys32->Obj.bObjType);
+    }
+    else
+        kwErrPrintf("Failed to lookup system directory '%s': %u\n", szSystem32, enmError);
+    return NULL;
+}
+
+
+/**
+ * Whether we can load this DLL natively or not.
+ *
+ * @returns K_TRUE/K_FALSE.
+ * @param   pszFilename         The filename (no path).
+ * @param   enmLocation         The location.
+ * @param   pszFullPath         The full filename and path.
+ */
+static KBOOL kwLdrModuleCanLoadNatively(const char *pszFilename, KWLOCATION enmLocation, const char *pszFullPath)
+{
+    if (enmLocation == KWLOCATION_SYSTEM32)
+        return K_TRUE;
+    if (enmLocation == KWLOCATION_UNKNOWN_NATIVE)
+        return K_TRUE;
+    if (   enmLocation == KWLOCATION_UNKNOWN
+        && kwLdrIsVirtualApiModule(pszFilename, kHlpStrLen(pszFilename)))
+        return K_TRUE;
+
+    /* If the location is unknown, we must check if it's some dynamic loading
+       of a SYSTEM32 DLL with a full path.  We do not want to load these ourselves! */
+    if (enmLocation == KWLOCATION_UNKNOWN)
+    {
+        PKFSDIR pWinSys32 = g_pWinSys32;
+        if (!pWinSys32)
+            pWinSys32 = kwLdrResolveWinSys32();
+        if (pWinSys32)
+        {
+            KFSLOOKUPERROR enmError;
+            PKFSOBJ pFsObj = kFsCacheLookupA(g_pFsCache, pszFullPath, &enmError);
+            if (pFsObj)
+            {
+                KBOOL fInWinSys32 = pFsObj->pParent == pWinSys32;
+                kFsCacheObjRelease(g_pFsCache, pFsObj);
+                if (fInWinSys32)
+                    return K_TRUE;
+            }
+        }
+    }
+
+    return kHlpStrNICompAscii(pszFilename, TUPLE("msvc"))      == 0
+        || kHlpStrNICompAscii(pszFilename, TUPLE("msdis"))     == 0
+        || kHlpStrNICompAscii(pszFilename, TUPLE("mspdb"))     == 0
+        || kHlpStrNICompAscii(pszFilename, TUPLE("tbbmalloc")) == 0
+        || kHlpStrNICompAscii(pszFilename, TUPLE("ucrtbase"))  == 0
+        || kHlpStrNICompAscii(pszFilename, TUPLE("vcruntime")) == 0
+        || (   enmLocation != KWLOCATION_UNKNOWN
+            && kwLdrIsVirtualApiModule(pszFilename, kHlpStrLen(pszFilename)))
+#if 0 /* for debugging, only for debugging. */
+        //|| kHlpStrICompAscii(pszFilename, "c1.dll") == 0
+        //|| kHlpStrICompAscii(pszFilename, "c1xx.dll") == 0
+        //|| kHlpStrICompAscii(pszFilename, "c2.dll") == 0
+#endif
+        ;
+}
+
+
+/**
+ * Check if the path leads to a regular file (that exists).
+ *
+ * @returns K_TRUE / K_FALSE
+ * @param   pszPath             Path to the file to check out.
+ */
+static KBOOL kwLdrModuleIsRegularFile(const char *pszPath)
+{
+    /* For stuff with .DLL extensions, we can use the GetFileAttribute cache to speed this up! */
+    KSIZE cchPath = kHlpStrLen(pszPath);
+    if (   cchPath > 3
+        && pszPath[cchPath - 4] == '.'
+        && (pszPath[cchPath - 3] == 'd' || pszPath[cchPath - 3] == 'D')
+        && (pszPath[cchPath - 2] == 'l' || pszPath[cchPath - 2] == 'L')
+        && (pszPath[cchPath - 1] == 'l' || pszPath[cchPath - 1] == 'L') )
+    {
+        KFSLOOKUPERROR enmError;
+        PKFSOBJ pFsObj = kFsCacheLookupNoMissingA(g_pFsCache, pszPath, &enmError);
+        if (pFsObj)
+        {
+            KBOOL fRc = pFsObj->bObjType == KFSOBJ_TYPE_FILE;
+            kFsCacheObjRelease(g_pFsCache, pFsObj);
+            return fRc;
+        }
+    }
+    else
+    {
+        BirdStat_T Stat;
+        int rc = birdStatFollowLink(pszPath, &Stat);
+        if (rc == 0)
+        {
+            if (S_ISREG(Stat.st_mode))
+                return K_TRUE;
+        }
+    }
+    return K_FALSE;
+}
+
+
+/**
+ * Worker for kwLdrModuleResolveAndLookup that checks out one possibility.
+ *
+ * If the file exists, we consult the module hash table before trying to load it
+ * off the disk.
+ *
+ * @returns Pointer to module on success, NULL if not found, ~(KUPTR)0 on
+ *          failure.
+ * @param   pszPath             The name of the import module.
+ * @param   enmLocation         The location we're searching.  This is used in
+ *                              the heuristics for determining if we can use the
+ *                              native loader or need to sandbox the DLL.
+ * @param   pExe                The executable (optional).
+ * @param   pszSearchPath       The PATH to search (optional).
+ */
+static PKWMODULE kwLdrModuleTryLoadDll(const char *pszPath, KWLOCATION enmLocation, PKWMODULE pExeMod, const char *pszSearchPath)
+{
+    /*
+     * Does the file exists and is it a regular file?
+     */
+    if (kwLdrModuleIsRegularFile(pszPath))
+    {
+        /*
+         * Yes! Normalize it and look it up in the hash table.
+         */
+        char szNormPath[1024];
+        int rc = kwPathNormalize(pszPath, szNormPath, sizeof(szNormPath));
+        if (rc == 0)
+        {
+            const char *pszName;
+            KU32 const  uHashPath = kwStrHash(szNormPath);
+            unsigned    idxHash   = uHashPath % K_ELEMENTS(g_apModules);
+            PKWMODULE   pMod      = g_apModules[idxHash];
+            if (pMod)
+            {
+                do
+                {
+                    if (   pMod->uHashPath == uHashPath
+                        && kHlpStrComp(pMod->pszPath, szNormPath) == 0)
+                        return kwLdrModuleRetain(pMod);
+                    pMod = pMod->pNextHash;
+                } while (pMod);
+            }
+
+            /*
+             * Not in the hash table, so we have to load it from scratch.
+             */
+            pszName = kHlpGetFilename(szNormPath);
+            if (kwLdrModuleCanLoadNatively(pszName, enmLocation, szNormPath))
+                pMod = kwLdrModuleCreateNative(szNormPath, uHashPath,
+                                               kwLdrModuleShouldDoNativeReplacements(pszName, enmLocation));
+            else
+                pMod = kwLdrModuleCreateNonNative(szNormPath, uHashPath, K_FALSE /*fExe*/, pExeMod, pszSearchPath);
+            if (pMod)
+                return pMod;
+            return (PKWMODULE)~(KUPTR)0;
+        }
+    }
+    return NULL;
+}
+
+
+/**
+ * Gets a reference to the module by the given name.
+ *
+ * We must do the search path thing, as our hash table may multiple DLLs with
+ * the same base name due to different tools version and similar.  We'll use a
+ * modified search sequence, though.  No point in searching the current
+ * directory for instance.
+ *
+ * @returns 0 on success, KERR on failure.
+ * @param   pszName             The name of the import module.
+ * @param   pExe                The executable (optional).
+ * @param   pImporter           The module doing the importing (optional).
+ * @param   pszSearchPath       The PATH to search (optional).
+ * @param   ppMod               Where to return the module pointer w/ reference.
+ */
+static int kwLdrModuleResolveAndLookup(const char *pszName, PKWMODULE pExe, PKWMODULE pImporter,
+                                       const char *pszSearchPath, PKWMODULE *ppMod)
+{
+    KSIZE const cchName = kHlpStrLen(pszName);
+    char        szPath[1024];
+    char       *psz;
+    PKWMODULE   pMod = NULL;
+    KBOOL       fNeedSuffix = *kHlpGetExt(pszName) == '\0' && kHlpGetFilename(pszName) == pszName;
+    KSIZE       cchSuffix   = fNeedSuffix ? 4 : 0;
+
+    /* Virtual API module.  Normalize and try load it. */
+    if (pMod == NULL && cchName > 7 && kwLdrIsVirtualApiModule(pszName, cchName))
+    {
+        if (cchName + cchSuffix >= sizeof(szPath))
+            return KERR_BUFFER_OVERFLOW;
+        kHlpMemCopy(szPath, pszName, cchName);
+        if (fNeedSuffix)
+            kHlpMemCopy(&szPath[cchName], ".dll", sizeof(".dll"));
+        szPath[cchName + cchSuffix] = '\0';
+        _strlwr(szPath);
+        pMod = kwLdrModuleTryLoadVirtualDll(szPath, cchName + cchSuffix);
+    }
+
+    /* The import path. */
+    if (pMod == NULL && pImporter != NULL)
+    {
+        if (pImporter->offFilename + cchName + cchSuffix >= sizeof(szPath))
+            return KERR_BUFFER_OVERFLOW;
+
+        psz = (char *)kHlpMemPCopy(kHlpMemPCopy(szPath, pImporter->pszPath, pImporter->offFilename), pszName, cchName + 1);
+        if (fNeedSuffix)
+            kHlpMemCopy(psz - 1, ".dll", sizeof(".dll"));
+        pMod = kwLdrModuleTryLoadDll(szPath, KWLOCATION_IMPORTER_DIR, pExe, pszSearchPath);
+    }
+
+    /* Application directory first. */
+    if (pMod == NULL && pExe != NULL && pExe != pImporter)
+    {
+        if (pExe->offFilename + cchName + cchSuffix >= sizeof(szPath))
+            return KERR_BUFFER_OVERFLOW;
+        psz = (char *)kHlpMemPCopy(kHlpMemPCopy(szPath, pExe->pszPath, pExe->offFilename), pszName, cchName + 1);
+        if (fNeedSuffix)
+            kHlpMemCopy(psz - 1, ".dll", sizeof(".dll"));
+        pMod = kwLdrModuleTryLoadDll(szPath, KWLOCATION_EXE_DIR, pExe, pszSearchPath);
+    }
+
+    /* The windows directory. */
+    if (pMod == NULL)
+    {
+        UINT cchDir = GetSystemDirectoryA(szPath, sizeof(szPath));
+        if (   cchDir <= 2
+            || cchDir + 1 + cchName + cchSuffix >= sizeof(szPath))
+            return KERR_BUFFER_OVERFLOW;
+        szPath[cchDir++] = '\\';
+        psz = (char *)kHlpMemPCopy(&szPath[cchDir], pszName, cchName + 1);
+        if (fNeedSuffix)
+            kHlpMemCopy(psz - 1, ".dll", sizeof(".dll"));
+        pMod = kwLdrModuleTryLoadDll(szPath, KWLOCATION_SYSTEM32, pExe, pszSearchPath);
+    }
+
+    /* The path. */
+    if (   pMod == NULL
+        && pszSearchPath)
+    {
+        const char *pszCur = pszSearchPath;
+        while (*pszCur != '\0')
+        {
+            /* Find the end of the component */
+            KSIZE cch = 0;
+            while (pszCur[cch] != ';' && pszCur[cch] != '\0')
+                cch++;
+
+            if (   cch > 0 /* wrong, but whatever */
+                && cch + 1 + cchName + cchSuffix < sizeof(szPath))
+            {
+                char *pszDst = kHlpMemPCopy(szPath, pszCur, cch);
+                if (   szPath[cch - 1] != ':'
+                    && szPath[cch - 1] != '/'
+                    && szPath[cch - 1] != '\\')
+                    *pszDst++ = '\\';
+                pszDst = kHlpMemPCopy(pszDst, pszName, cchName);
+                if (fNeedSuffix)
+                    pszDst = kHlpMemPCopy(pszDst, ".dll", 4);
+                *pszDst = '\0';
+
+                pMod = kwLdrModuleTryLoadDll(szPath, KWLOCATION_SYSTEM32, pExe, pszSearchPath);
+                if (pMod)
+                    break;
+            }
+
+            /* Advance */
+            pszCur += cch;
+            while (*pszCur == ';')
+                pszCur++;
+        }
+    }
+
+    /* Return. */
+    if (pMod != NULL && pMod != (PKWMODULE)~(KUPTR)0)
+    {
+        *ppMod = pMod;
+        return 0;
+    }
+    *ppMod = NULL;
+    return KERR_GENERAL_FAILURE;
+}
+
+
+/**
+ * Creates a CRT slot for the given module.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pModule             The module.
+ */
+static int kwLdrModuleCreateCrtSlot(PKWMODULE pModule)
+{
+    KSIZE iSlot;
+    kHlpAssert(pModule->iCrtSlot == KU8_MAX);
+    for (iSlot = 0; iSlot < K_ELEMENTS(g_aCrtSlots); iSlot++)
+        if (g_aCrtSlots[iSlot].pModule == NULL)
+        {
+            KLDRADDR uAddr;
+            int rc;
+
+            /* Do the linking: */
+            g_aCrtSlots[iSlot].pModule = pModule;
+            g_aCrtSlots[iSlot].iSlot   = (KU32)iSlot;
+            pModule->iCrtSlot          = (KU8)iSlot;
+
+            /* resolve symbols: */
+            rc = kLdrModQuerySymbol(pModule->pLdrMod, NULL /*pvBits*/, KLDRMOD_BASEADDRESS_MAP, KU32_MAX, "malloc", 6,
+                                    NULL /*pvszVersion*/, NULL /*pfnGetForwarder*/, NULL /*pvUser*/, &uAddr, NULL);
+            *(KUPTR *)&g_aCrtSlots[iSlot].pfnMalloc = rc == 0 ? (KUPTR)uAddr : 0;
+            if (rc != 0)
+                kwErrPrintf("Failed to resolved 'malloc' in '%s': %d\n", pModule->pszPath, rc);
+
+            rc = kLdrModQuerySymbol(pModule->pLdrMod, NULL /*pvBits*/, KLDRMOD_BASEADDRESS_MAP, KU32_MAX, "_beginthreadex", 14,
+                                    NULL /*pvszVersion*/, NULL /*pfnGetForwarder*/, NULL /*pvUser*/, &uAddr, NULL);
+            *(KUPTR *)&g_aCrtSlots[iSlot].pfnBeginThreadEx = rc == 0 ? (KUPTR)uAddr : 0;
+            //if (rc != 0)
+            //    kwErrPrintf("Failed to resolved '_beginthreadex' in '%s': %d\n", pModule->pszPath, rc);
+
+            return 0;
+        }
+    kwErrPrintf("Out of CRT slots!\n");
+    return KERR_NO_MEMORY;
+}
+
+
+/**
+ * Locates the module structure for an already loaded native module.
+ *
+ * This will create a module structure if needed.
+ *
+ * @returns Pointer to the module structure on success, NULL on failure.
+ * @param   hModule         The native module handle.
+ * @param   fEnsureCrtSlot  Whether to ensure that it has a valid CRT slot.
+ * @param   pszLogName      The name to use for logging/errors.
+ */
+static PKWMODULE kwLdrModuleForLoadedNativeByHandle(HMODULE hModule, KBOOL fEnsureCrtSlot, const char *pszLogName)
+{
+    /*
+     * Get a normalized path for it.
+     */
+    char szModPath[1024];
+    if (GetModuleFileNameA(hModule, szModPath, sizeof(szModPath)) > 0)
+    {
+        char szNormPath[1024];
+        int rc = kwPathNormalize(szModPath, szNormPath, sizeof(szNormPath));
+        if (rc == 0)
+        {
+            /*
+             * Hash the path and look it up.
+             */
+            KU32        uHashPath;
+            KSIZE const cchPath   = kwStrHashEx(szNormPath, &uHashPath);
+            unsigned    idxHash   = uHashPath % K_ELEMENTS(g_apModules);
+            PKWMODULE   pMod      = g_apModules[idxHash];
+            if (pMod)
+            {
+                do
+                {
+                    if (   pMod->uHashPath == uHashPath
+                        && kHlpStrComp(pMod->pszPath, szNormPath) == 0)
+                    {
+                        kwLdrModuleRetain(pMod);
+                        break;
+                    }
+                    pMod = pMod->pNextHash;
+                } while (pMod);
+            }
+
+            /*
+             * If not in the hash table, so create a module entry.
+             */
+            if (!pMod)
+            {
+                PKLDRMOD pLdrMod;
+                rc = kLdrModOpenNativeByHandle((KUPTR)hModule, KLDRMOD_OPEN_FLAGS_NATIVE_ALLOW_INIT_TERM, &pLdrMod);
+                if (rc == 0)
+                {
+                    /** @todo more accurately determine location  */
+                    const char *pszFilename = kHlpGetFilename(szNormPath);
+                    KBOOL fDoReplacements = kwLdrModuleShouldDoNativeReplacements(pszFilename, KWLOCATION_SYSTEM32);
+                    pMod = kwLdrModuleCreateForNativekLdrModule(pLdrMod, szNormPath, cchPath + 1, uHashPath,
+                                                                fDoReplacements, NULL /*pVirtualApiMod*/);
+                    if (!pMod)
+                    {
+                        kLdrModClose(pLdrMod);
+                        kwErrPrintf("out of memory\n");
+                    }
+                }
+                else
+                    kwErrPrintf("kLdrModOpenNativeByHandle failed for %p / '%s': %d\n", hModule, pszLogName, rc);
+            }
+            if (pMod)
+            {
+                /*
+                 * Create a CRT slot for the module if necessary.
+                 */
+                if (!fEnsureCrtSlot || pMod->iCrtSlot != KU8_MAX)
+                    return pMod;
+                rc = kwLdrModuleCreateCrtSlot(pMod);
+                if (rc == 0)
+                    return pMod;
+                kwLdrModuleRelease(pMod);
+            }
+        }
+        else
+            kwErrPrintf("kwPathNormalize failed for '%s' (%s): %u!\n", szModPath, pszLogName, GetLastError());
+    }
+    else
+        kwErrPrintf("GetModuleFileNameA failed for '%s': %u!\n", pszLogName, GetLastError());
+    return NULL;
+}
+
+
+/**
+ * Locates the module structure for an already loaded native module.
+ *
+ * This will create a module structure if needed.
+ *
+ * @returns Pointer to the module structure on success, NULL on failure.
+ * @param   pszName         The name of the module.
+ * @param   fEnsureCrtSlot  Whether to ensure that it has a valid CRT slot.
+ * @param   fAlwaysPresent  Whether the module is expected to always be present,
+ *                          or not.  If not, complain less.
+ */
+static PKWMODULE kwLdrModuleForLoadedNative(const char *pszName, KBOOL fEnsureCrtSlot, KBOOL fAlwaysPresent)
+{
+    /*
+     * Locate the module handle and pass it to kwLdrModuleForLoadedNativeByHandle.
+     */
+    HANDLE hModule = GetModuleHandleA(pszName);
+    if (hModule)
+        return kwLdrModuleForLoadedNativeByHandle(hModule, fEnsureCrtSlot, pszName);
+    if (fAlwaysPresent)
+        kwErrPrintf("Module '%s' was not found by GetModuleHandleA/W!\n", pszName);
+    return NULL;
+}
+
+
+/**
+ * Does the TLS memory initialization for a module on the current thread.
+ *
+ * @returns 0 on success, error on failure.
+ * @param   pMod                The module.
+ */
+static int kwLdrCallTlsAllocateAndInit(PKWMODULE pMod)
+{
+    if (pMod->u.Manual.idxTls != KU32_MAX)
+    {
+        PTEB pTeb = NtCurrentTeb();
+        void **ppvTls = *(void ***)( (KUPTR)pTeb + (sizeof(void *) == 4 ? 0x2c : 0x58) );
+        KU8   *pbData = (KU8 *)ppvTls[pMod->u.Manual.idxTls];
+        KWLDR_LOG(("%s: TLS: Initializing %#x (%#x), idxTls=%d\n",
+                   pMod->pszPath, pbData, pMod->u.Manual.cbTlsAlloc, pMod->u.Manual.cbTlsInitData, pMod->u.Manual.idxTls));
+        if (pMod->u.Manual.cbTlsInitData < pMod->u.Manual.cbTlsAlloc)
+            kHlpMemSet(&pbData[pMod->u.Manual.cbTlsInitData], 0, pMod->u.Manual.cbTlsAlloc);
+        if (pMod->u.Manual.cbTlsInitData)
+            kHlpMemCopy(pbData, &pMod->u.Manual.pbCopy[pMod->u.Manual.offTlsInitData], pMod->u.Manual.cbTlsInitData);
+    }
+    return 0;
+}
+
+
+/**
+ * Does the TLS callbacks for a module.
+ *
+ * @param   pMod                The module.
+ * @param   dwReason            The callback reason.
+ */
+static void kwLdrCallTlsCallbacks(PKWMODULE pMod, DWORD dwReason)
+{
+    if (pMod->u.Manual.cTlsCallbacks)
+    {
+        PIMAGE_TLS_CALLBACK *ppfnCallback = (PIMAGE_TLS_CALLBACK *)&pMod->u.Manual.pbLoad[pMod->u.Manual.offTlsCallbacks];
+        do
+        {
+            KWLDR_LOG(("%s: Calling TLS callback %p(%p,%#x,0)\n", pMod->pszPath, *ppfnCallback, pMod->hOurMod, dwReason));
+            (*ppfnCallback)(pMod->hOurMod, dwReason, 0);
+        } while (*++ppfnCallback);
+    }
+}
+
+
+/**
+ * Does module initialization starting at @a pMod.
+ *
+ * This is initially used on the executable.  Later it is used by the
+ * LoadLibrary interceptor.
+ *
+ * @returns 0 on success, error on failure.
+ * @param   pMod                The module to initialize.
+ */
+static int kwLdrModuleInitTree(PKWMODULE pMod)
+{
+    int rc = 0;
+    if (!pMod->fNative)
+    {
+        KWLDR_LOG(("kwLdrModuleInitTree: enmState=%#x idxTls=%u %s\n",
+                   pMod->u.Manual.enmState, pMod->u.Manual.idxTls, pMod->pszPath));
+
+        /*
+         * Need to copy bits?
+         */
+        if (pMod->u.Manual.enmState == KWMODSTATE_NEEDS_BITS)
+        {
+            if (pMod->u.Manual.fUseLdBuf)
+            {
+#if defined(KBUILD_OS_WINDOWS) && defined(KBUILD_ARCH_AMD64)
+                if (g_pModInLdBuf != NULL && g_pModInLdBuf != pMod && pMod->u.Manual.fRegisteredFunctionTable)
+                {
+                    BOOLEAN fRc = RtlDeleteFunctionTable(pMod->u.Manual.paFunctions);
+                    kHlpAssert(fRc); K_NOREF(fRc);
+                }
+#endif
+                g_pModPrevInLdBuf = g_pModInLdBuf;
+                g_pModInLdBuf = pMod;
+            }
+
+            /* Do quick zeroing and copying when we can. */
+            pMod->u.Manual.fCanDoQuick = K_FALSE;
+            if (   pMod->u.Manual.fCanDoQuick
+                && (   !pMod->u.Manual.fUseLdBuf
+                    || g_pModPrevInLdBuf == pMod))
+            {
+                /* Zero first. */
+                kHlpAssert(pMod->u.Manual.cQuickZeroChunks <= 3);
+                switch (pMod->u.Manual.cQuickZeroChunks)
+                {
+                    case 3: kHlpMemSet(pMod->u.Manual.aQuickZeroChunks[2].pbDst, 0, pMod->u.Manual.aQuickZeroChunks[2].cbToZero);
+                    case 2: kHlpMemSet(pMod->u.Manual.aQuickZeroChunks[1].pbDst, 0, pMod->u.Manual.aQuickZeroChunks[1].cbToZero);
+                    case 1: kHlpMemSet(pMod->u.Manual.aQuickZeroChunks[0].pbDst, 0, pMod->u.Manual.aQuickZeroChunks[0].cbToZero);
+                    case 0: break;
+                }
+
+                /* Then copy. */
+                kHlpAssert(pMod->u.Manual.cQuickCopyChunks > 0);
+                kHlpAssert(pMod->u.Manual.cQuickCopyChunks <= 3);
+                switch (pMod->u.Manual.cQuickCopyChunks)
+                {
+                    case 3: kHlpMemCopy(pMod->u.Manual.aQuickCopyChunks[2].pbDst, pMod->u.Manual.aQuickCopyChunks[2].pbSrc,
+                                        pMod->u.Manual.aQuickCopyChunks[2].cbToCopy);
+                    case 2: kHlpMemCopy(pMod->u.Manual.aQuickCopyChunks[1].pbDst, pMod->u.Manual.aQuickCopyChunks[1].pbSrc,
+                                        pMod->u.Manual.aQuickCopyChunks[1].cbToCopy);
+                    case 1: kHlpMemCopy(pMod->u.Manual.aQuickCopyChunks[0].pbDst, pMod->u.Manual.aQuickCopyChunks[0].pbSrc,
+                                        pMod->u.Manual.aQuickCopyChunks[0].cbToCopy);
+                    case 0: break;
+                }
+            }
+            /* Must copy the whole image. */
+            else
+            {
+                kHlpMemCopy(pMod->u.Manual.pbLoad, pMod->u.Manual.pbCopy, pMod->cbImage);
+                pMod->u.Manual.fCanDoQuick = K_TRUE;
+            }
+            pMod->u.Manual.enmState = KWMODSTATE_NEEDS_INIT;
+        }
+
+#if defined(KBUILD_OS_WINDOWS) && defined(KBUILD_ARCH_AMD64)
+        /*
+         * Need to register function table?
+         */
+        if (   !pMod->u.Manual.fRegisteredFunctionTable
+            && pMod->u.Manual.cFunctions > 0)
+        {
+            pMod->u.Manual.fRegisteredFunctionTable = RtlAddFunctionTable(pMod->u.Manual.paFunctions,
+                                                                          pMod->u.Manual.cFunctions,
+                                                                          (KUPTR)pMod->u.Manual.pbLoad) != FALSE;
+            kHlpAssert(pMod->u.Manual.fRegisteredFunctionTable);
+        }
+#endif
+
+
+        if (pMod->u.Manual.enmState == KWMODSTATE_NEEDS_INIT)
+        {
+            /*
+             * Must do imports first, but mark our module as being initialized to avoid
+             * endless recursion should there be a dependency loop.
+             */
+            KSIZE iImp;
+            pMod->u.Manual.enmState = KWMODSTATE_BEING_INITED;
+
+            for (iImp = 0; iImp < pMod->u.Manual.cImpMods; iImp++)
+            {
+                rc = kwLdrModuleInitTree(pMod->u.Manual.apImpMods[iImp]);
+                if (rc != 0)
+                    return rc;
+            }
+
+            /* Do TLS allocations for module init? */
+            rc = kwLdrCallTlsAllocateAndInit(pMod);
+            if (rc != 0)
+                return rc;
+            if (pMod->u.Manual.cTlsCallbacks > 0)
+                kwLdrCallTlsCallbacks(pMod, DLL_PROCESS_ATTACH);
+
+            /* Finally call the entry point. */
+            rc = kLdrModCallInit(pMod->pLdrMod, pMod->u.Manual.pbLoad, (KUPTR)pMod->hOurMod);
+            if (rc == 0)
+                pMod->u.Manual.enmState = KWMODSTATE_READY;
+            else
+                pMod->u.Manual.enmState = KWMODSTATE_INIT_FAILED;
+        }
+    }
+    /*
+     * Special hack to disconnect mspdbXXX.dll from mspdbsrv.exe when
+     * _MSPDBSRV_ENDPOINT_ changes value.
+     */
+    else if (pMod->fNeedReInit)
+    {
+        int rc2;
+        KWLDR_LOG(("kwLdrModuleInitTree: mspdb re-init hack: %s\n", pMod->pszPath));
+        //fprintf(stderr, "%d: kwLdrModuleInitTree: mspdb re-init hack: %s\n", getpid(), kwSandboxDoGetEnvA(&g_Sandbox, TUPLE("_MSPDBSRV_ENDPOINT_"))); fflush(stderr);
+        rc = kLdrModCallTerm(pMod->pLdrMod, pMod->u.Manual.pbLoad, (KUPTR)pMod->hOurMod);
+        rc2 = kLdrModCallInit(pMod->pLdrMod, pMod->u.Manual.pbLoad, (KUPTR)pMod->hOurMod);
+        if (!rc && !rc2)
+        { /* likely */ }
+        else
+        {
+            kwErrPrintf("Re-init of '%s' failed: rc=%d rc2=%d\n", pMod->pszPath, rc, rc2);
+            if (rc2 && !rc)
+                rc = rc2;
+        }
+        pMod->fNeedReInit = K_FALSE;
+    }
+    return rc;
+}
+
+
+/**
+ * Looks up a module handle for a tool.
+ *
+ * @returns Referenced loader module on success, NULL on if not found.
+ * @param   pTool               The tool.
+ * @param   hmod                The module handle.
+ */
+static PKWMODULE kwToolLocateModuleByHandle(PKWTOOL pTool, HMODULE hmod)
+{
+    KUPTR const     uHMod = (KUPTR)hmod;
+    PKWMODULE      *papMods;
+    KU32            iEnd;
+    KU32            i;
+    PKWDYNLOAD      pDynLoad;
+
+    if (pTool)
+    { /* likely */ }
+    else
+        return NULL;
+
+    /* The executable. */
+    if (   hmod == NULL
+        || (pTool->u.Sandboxed.pExe && pTool->u.Sandboxed.pExe->hOurMod == hmod))
+    {
+        if (pTool->u.Sandboxed.pExe)
+            return kwLdrModuleRetain(pTool->u.Sandboxed.pExe);
+        return NULL;
+    }
+
+    /*
+     * Binary lookup using the module table.
+     */
+    papMods = pTool->u.Sandboxed.papModules;
+    iEnd    = pTool->u.Sandboxed.cModules;
+    if (iEnd)
+    {
+        KU32 iStart  = 0;
+        i = iEnd / 2;
+        for (;;)
+        {
+            KUPTR const uHModCur = (KUPTR)papMods[i]->hOurMod;
+            if (uHMod < uHModCur)
+            {
+                iEnd = i--;
+                if (iStart <= i)
+                { }
+                else
+                    break;
+            }
+            else if (uHMod != uHModCur)
+            {
+                iStart = ++i;
+                if (i < iEnd)
+                { }
+                else
+                    break;
+            }
+            /* We've got a match.  Always return the non-virtual module (first) when there is one. */
+            else if (!papMods[i]->pVirtualApiMod)
+                return kwLdrModuleRetain(papMods[i]);
+            else
+            {
+                while (i > 0 && papMods[i - 1]->pVirtualApiMod && papMods[i - 1]->hOurMod == hmod)
+                    i--;
+                return kwLdrModuleRetain(papMods[i]);
+            }
+
+            i = iStart + (iEnd - iStart) / 2;
+        }
+
+#ifndef NDEBUG
+        iStart = pTool->u.Sandboxed.cModules;
+        while (--iStart > 0)
+            kHlpAssert((KUPTR)papMods[iStart]->hOurMod != uHMod);
+        kHlpAssert(i == 0 || (KUPTR)papMods[i - 1]->hOurMod < uHMod);
+#endif
+    }
+
+    /*
+     * Dynamically loaded images.
+     */
+    for (pDynLoad = pTool->u.Sandboxed.pDynLoadHead; pDynLoad != NULL; pDynLoad = pDynLoad->pNext)
+        if (pDynLoad->hmod == hmod)
+        {
+            if (pDynLoad->pMod)
+                return kwLdrModuleRetain(pDynLoad->pMod);
+            KWFS_TODO();
+            return NULL;
+        }
+
+    return NULL;
+}
+
+/**
+ * Adds the given module to the tool import table.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pTool               The tool.
+ * @param   pMod                The module.
+ */
+static int kwToolAddModule(PKWTOOL pTool, PKWMODULE pMod)
+{
+    /*
+     * Binary lookup. Locating the right slot for it, return if already there.
+     */
+    KUPTR const     uHMod   = (KUPTR)pMod->hOurMod;
+    PKWMODULE      *papMods = pTool->u.Sandboxed.papModules;
+    KU32            iEnd    = pTool->u.Sandboxed.cModules;
+    KU32            i;
+    if (iEnd)
+    {
+        KU32        iStart  = 0;
+        i = iEnd / 2;
+        for (;;)
+        {
+            PKWMODULE   pCurMod  = papMods[i];
+            KUPTR const uHModCur = (KUPTR)pCurMod->hOurMod;
+            if (uHMod < uHModCur)
+            {
+                iEnd = i;
+                if (iStart < i)
+                { }
+                else
+                    break;
+            }
+            else if (uHMod != uHModCur)
+            {
+                iStart = ++i;
+                if (i < iEnd)
+                { }
+                else
+                    break;
+            }
+            else
+            {
+                /* Already there in the table. The non-virtual module must be the first
+                   entry if we've got duplicate hmod values because of virtual modules.  */
+                if (pMod != pCurMod)
+                {
+                    /* Skip to the last module with the same hmod. */
+                    while (i + 1 < iEnd && (KUPTR)(pCurMod = papMods[i + 1])->hOurMod == uHMod)
+                    {
+                        if (pMod == pCurMod)
+                            return 0;
+                        i++;
+                    }
+
+                    /* Then scan backwards till the first one. */
+                    while (i > 0 && (KUPTR)(pCurMod = papMods[i - 1])->hOurMod == uHMod)
+                    {
+                        if (pMod == pCurMod)
+                            return 0;
+                        i--;
+                    }
+                    pCurMod = papMods[i];
+                    if (pMod != pCurMod)
+                    {
+                        if (pMod->pVirtualApiMod && !pCurMod->pVirtualApiMod)
+                            i++;
+                        break;
+                    }
+                }
+                return 0;
+            }
+
+            i = iStart + (iEnd - iStart) / 2;
+        }
+#ifndef NDEBUG
+        iStart = pTool->u.Sandboxed.cModules;
+        while (--iStart > 0)
+        {
+            kHlpAssert(papMods[iStart] != pMod);
+            kHlpAssert(   (KUPTR)papMods[iStart]->hOurMod != uHMod
+                       || pMod->pVirtualApiMod
+                       || papMods[iStart]->pVirtualApiMod);
+        }
+        kHlpAssert(i == 0 || (KUPTR)papMods[i - 1]->hOurMod <= uHMod);
+        kHlpAssert(i == pTool->u.Sandboxed.cModules || (KUPTR)papMods[i]->hOurMod >= uHMod);
+#endif
+    }
+    else
+        i = 0;
+
+    /*
+     * Grow the table?
+     */
+    if ((pTool->u.Sandboxed.cModules % 16) == 0)
+    {
+        void *pvNew = kHlpRealloc(papMods, sizeof(papMods[0]) * (pTool->u.Sandboxed.cModules + 16));
+        if (!pvNew)
+            return KERR_NO_MEMORY;
+        pTool->u.Sandboxed.papModules = papMods = (PKWMODULE *)pvNew;
+    }
+
+    /* Insert it. */
+    if (i != pTool->u.Sandboxed.cModules)
+        kHlpMemMove(&papMods[i + 1], &papMods[i], (pTool->u.Sandboxed.cModules - i) * sizeof(papMods[0]));
+    papMods[i] = kwLdrModuleRetain(pMod);
+    pTool->u.Sandboxed.cModules++;
+    KWLDR_LOG(("kwToolAddModule: %u modules after adding %p=%s\n", pTool->u.Sandboxed.cModules, uHMod, pMod->pszPath));
+    return 0;
+}
+
+
+/**
+ * Adds the given module and all its imports to the
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pTool               The tool.
+ * @param   pMod                The module.
+ */
+static int kwToolAddModuleAndImports(PKWTOOL pTool, PKWMODULE pMod)
+{
+    int rc = kwToolAddModule(pTool, pMod);
+    if (pMod->pVirtualApiMod && rc == 0)
+        rc = kwToolAddModule(pTool, pMod->pVirtualApiMod);
+    if (!pMod->fNative && rc == 0)
+    {
+        KSIZE iImp = pMod->u.Manual.cImpMods;
+        while (iImp-- > 0)
+        {
+            rc = kwToolAddModuleAndImports(pTool, pMod->u.Manual.apImpMods[iImp]);
+            if (rc == 0)
+            { }
+            else
+                break;
+        }
+    }
+
+    return 0;
+}
+
+
+/**
+ * Creates a tool entry and inserts it.
+ *
+ * @returns Pointer to the tool entry.  NULL on failure.
+ * @param   pToolFsObj          The file object of the tool.  The created tool
+ *                              will be associated with it.
+ *
+ *                              A reference is donated by the caller and must be
+ *                              released.
+ * @param   pszSearchPath       The PATH environment variable value, or NULL.
+ */
+static PKWTOOL kwToolEntryCreate(PKFSOBJ pToolFsObj, const char *pszSearchPath)
+{
+    KSIZE   cwcPath = pToolFsObj->cwcParent + pToolFsObj->cwcName + 1;
+    KSIZE   cbPath  = pToolFsObj->cchParent + pToolFsObj->cchName + 1;
+    PKWTOOL pTool   = (PKWTOOL)kFsCacheObjAddUserData(g_pFsCache, pToolFsObj, KW_DATA_KEY_TOOL,
+                                                      sizeof(*pTool) + cwcPath * sizeof(wchar_t) + cbPath);
+    if (pTool)
+    {
+        KBOOL fRc;
+        wchar_t wcSaved;
+        wchar_t *pwcEnd;
+        pTool->pwszPath = (wchar_t const *)(pTool + 1);
+        fRc = kFsCacheObjGetFullPathW(pToolFsObj, (wchar_t *)pTool->pwszPath, cwcPath, '\\');
+        kHlpAssert(fRc); K_NOREF(fRc);
+
+        pTool->pszPath = (char const *)&pTool->pwszPath[cwcPath];
+        fRc = kFsCacheObjGetFullPathA(pToolFsObj, (char *)pTool->pszPath, cbPath, '\\');
+        kHlpAssert(fRc);
+
+        /* HACK ALERT! This is to help the loader search the application directory. */
+        pwcEnd = (wchar_t *)&pTool->pwszPath[pToolFsObj->cwcParent];
+        wcSaved = *pwcEnd;
+        *pwcEnd = '\0';
+        if (!SetDllDirectoryW(pTool->pwszPath))
+            kwErrPrintf("SetDllDirectoryW(tool) failed: %u\n", GetLastError());
+        *pwcEnd = wcSaved;
+
+        pTool->enmType = KWTOOLTYPE_SANDBOXED;
+        pTool->u.Sandboxed.pExe = kwLdrModuleCreateNonNative(pTool->pszPath, kwStrHash(pTool->pszPath), K_TRUE /*fExe*/,
+                                                             NULL /*pExeMod*/, pszSearchPath);
+        if (pTool->u.Sandboxed.pExe)
+        {
+            int rc = kwLdrModuleQueryMainEntrypoint(pTool->u.Sandboxed.pExe, &pTool->u.Sandboxed.uMainAddr);
+            if (rc == 0)
+            {
+                if (kHlpStrICompAscii(pToolFsObj->pszName, "cl.exe") == 0)
+                    pTool->u.Sandboxed.enmHint = KWTOOLHINT_VISUAL_CPP_CL;
+                else if (kHlpStrICompAscii(pToolFsObj->pszName, "link.exe") == 0)
+                    pTool->u.Sandboxed.enmHint = KWTOOLHINT_VISUAL_CPP_LINK;
+                else
+                    pTool->u.Sandboxed.enmHint = KWTOOLHINT_NONE;
+                kwToolAddModuleAndImports(pTool, pTool->u.Sandboxed.pExe);
+            }
+            else
+            {
+                kwErrPrintf("Failed to get entrypoint for '%s': %u\n", pTool->pszPath, rc);
+                kwLdrModuleRelease(pTool->u.Sandboxed.pExe);
+                pTool->u.Sandboxed.pExe = NULL;
+                pTool->enmType = KWTOOLTYPE_EXEC;
+            }
+        }
+        else
+        {
+            kwErrPrintf("kwLdrModuleCreateNonNative failed!\n");
+            pTool->enmType = KWTOOLTYPE_EXEC;
+        }
+
+        kFsCacheObjRelease(g_pFsCache, pToolFsObj);
+        g_cTools++;
+        return pTool;
+    }
+    kwErrPrintf("kFsCacheObjAddUserData failed!\n");
+    kFsCacheObjRelease(g_pFsCache, pToolFsObj);
+    return NULL;
+}
+
+
+/**
+ * Looks up the given tool, creating a new tool table entry if necessary.
+ *
+ * @returns Pointer to the tool entry.  NULL on failure (fully bitched).
+ * @param   pszExe              The executable for the tool (not normalized).
+ * @param   cEnvVars            Number of environment varibles.
+ * @param   papszEnvVars        Environment variables.  For getting the PATH.
+ */
+static PKWTOOL kwToolLookup(const char *pszExe, KU32 cEnvVars, const char **papszEnvVars)
+{
+    /*
+     * We associate the tools instances with the file system objects.
+     *
+     * We'd like to do the lookup without invaliding the volatile parts of the
+     * cache, thus the double lookup here.  The cache gets invalidate later on.
+     */
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pToolFsObj = kFsCacheLookupA(g_pFsCache, pszExe, &enmError);
+    if (   !pToolFsObj
+        || pToolFsObj->bObjType != KFSOBJ_TYPE_FILE)
+    {
+        kFsCacheInvalidateCustomBoth(g_pFsCache);
+        pToolFsObj = kFsCacheLookupA(g_pFsCache, pszExe, &enmError);
+    }
+    if (pToolFsObj)
+    {
+        if (pToolFsObj->bObjType == KFSOBJ_TYPE_FILE)
+        {
+            const char *pszSearchPath;
+            PKWTOOL pTool = (PKWTOOL)kFsCacheObjGetUserData(g_pFsCache, pToolFsObj, KW_DATA_KEY_TOOL);
+            if (pTool)
+            {
+                kFsCacheObjRelease(g_pFsCache, pToolFsObj);
+                return pTool;
+            }
+
+            /*
+             * Need to create a new tool.
+             */
+            pszSearchPath = NULL;
+            while (cEnvVars-- > 0)
+                if (_strnicmp(papszEnvVars[cEnvVars], "PATH=", 5) == 0)
+                {
+                    pszSearchPath = &papszEnvVars[cEnvVars][5];
+                    break;
+                }
+
+            pTool = kwToolEntryCreate(pToolFsObj, pszSearchPath);
+            if (pTool)
+                return pTool;
+
+            kwErrPrintf("kwToolLookup(%s) -> NULL: kwToolEntryCreate failed\n", pszExe);
+        }
+        else
+        {
+            kFsCacheObjRelease(g_pFsCache, pToolFsObj);
+            kwErrPrintf("kwToolLookup(%s) -> NULL: not file (bObjType=%d fFlags=%#x uCacheGen=%u auGenerationsMissing=[%u,%u])\n",
+                        pszExe, pToolFsObj->bObjType, pToolFsObj->fFlags, pToolFsObj->uCacheGen,
+                        g_pFsCache->auGenerationsMissing[0], g_pFsCache->auGenerationsMissing[1]);
+        }
+    }
+    else
+        kwErrPrintf("kwToolLookup(%s) -> NULL: enmError=%d\n", pszExe, enmError);
+    return NULL;
+}
+
+
+
+/*
+ *
+ * File system cache.
+ * File system cache.
+ * File system cache.
+ *
+ */
+
+
+/**
+ * This is for kDep.
+ */
+int kwFsPathExists(const char *pszPath)
+{
+    BirdTimeSpec_T  TsIgnored;
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pFsObj = kFsCacheLookupNoMissingA(g_pFsCache, pszPath, &enmError);
+    if (pFsObj)
+    {
+        kFsCacheObjRelease(g_pFsCache, pFsObj);
+        return 1;
+    }
+    return birdStatModTimeOnly(pszPath, &TsIgnored, 1) == 0;
+}
+
+
+/* duplicated in dir-nt-bird.c */
+void nt_fullpath_cached(const char *pszPath, char *pszFull, size_t cbFull)
+{
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pPathObj = kFsCacheLookupA(g_pFsCache, pszPath, &enmError);
+    if (pPathObj)
+    {
+        KSIZE off = pPathObj->cchParent;
+        if (off > 0)
+        {
+            KSIZE offEnd = off + pPathObj->cchName;
+            if (offEnd < cbFull)
+            {
+                PKFSDIR pAncestor;
+
+                pszFull[off + pPathObj->cchName] = '\0';
+                memcpy(&pszFull[off], pPathObj->pszName, pPathObj->cchName);
+
+                for (pAncestor = pPathObj->pParent; off > 0; pAncestor = pAncestor->Obj.pParent)
+                {
+                    kHlpAssert(off > 1);
+                    kHlpAssert(pAncestor != NULL);
+                    kHlpAssert(pAncestor->Obj.cchName > 0);
+                    pszFull[--off] = '/';
+                    off -= pAncestor->Obj.cchName;
+                    kHlpAssert(pAncestor->Obj.cchParent == off);
+                    memcpy(&pszFull[off], pAncestor->Obj.pszName, pAncestor->Obj.cchName);
+                }
+                kFsCacheObjRelease(g_pFsCache, pPathObj);
+                return;
+            }
+        }
+        else
+        {
+            if ((size_t)pPathObj->cchName + 1 < cbFull)
+            {
+                memcpy(pszFull, pPathObj->pszName, pPathObj->cchName);
+                pszFull[pPathObj->cchName] = '/';
+                pszFull[pPathObj->cchName + 1] = '\0';
+
+                kFsCacheObjRelease(g_pFsCache, pPathObj);
+                return;
+            }
+        }
+
+        /* do fallback. */
+        kHlpAssertFailed();
+        kFsCacheObjRelease(g_pFsCache, pPathObj);
+    }
+
+    nt_fullpath(pszPath, pszFull, cbFull);
+}
+
+
+/**
+ * Helper for getting the extension of a UTF-16 path.
+ *
+ * @returns Pointer to the extension or the terminator.
+ * @param   pwszPath        The path.
+ * @param   pcwcExt         Where to return the length of the extension.
+ */
+static wchar_t const *kwFsPathGetExtW(wchar_t const *pwszPath, KSIZE *pcwcExt)
+{
+    wchar_t const *pwszName = pwszPath;
+    wchar_t const *pwszExt  = NULL;
+    for (;;)
+    {
+        wchar_t const wc = *pwszPath++;
+        if (wc == '.')
+            pwszExt = pwszPath;
+        else if (wc == '/' || wc == '\\' || wc == ':')
+        {
+            pwszName = pwszPath;
+            pwszExt = NULL;
+        }
+        else if (wc == '\0')
+        {
+            if (pwszExt)
+            {
+                *pcwcExt = pwszPath - pwszExt - 1;
+                return pwszExt;
+            }
+            *pcwcExt = 0;
+            return pwszPath - 1;
+        }
+    }
+}
+
+
+
+/**
+ * Parses the argument string passed in as pszSrc.
+ *
+ * @returns size of the processed arguments.
+ * @param   pszSrc  Pointer to the commandline that's to be parsed.
+ * @param   pcArgs  Where to return the number of arguments.
+ * @param   argv    Pointer to argument vector to put argument pointers in. NULL allowed.
+ * @param   pchPool Pointer to memory pchPool to put the arguments into. NULL allowed.
+ *
+ * @remarks Lifted from startuphacks-win.c
+ */
+static int parse_args(const char *pszSrc, int *pcArgs, char **argv, char *pchPool)
+{
+    int   bs;
+    char  chQuote;
+    char *pfFlags;
+    int   cbArgs;
+    int   cArgs;
+
+#define PUTC(c) do { ++cbArgs; if (pchPool != NULL) *pchPool++ = (c); } while (0)
+#define PUTV    do { ++cArgs;  if (argv != NULL) *argv++ = pchPool; } while (0)
+#define WHITE(c) ((c) == ' ' || (c) == '\t')
+
+#define _ARG_DQUOTE   0x01          /* Argument quoted (")                  */
+#define _ARG_RESPONSE 0x02          /* Argument read from response file     */
+#define _ARG_WILDCARD 0x04          /* Argument expanded from wildcard      */
+#define _ARG_ENV      0x08          /* Argument from environment            */
+#define _ARG_NONZERO  0x80          /* Always set, to avoid end of string   */
+
+    cArgs  = 0;
+    cbArgs = 0;
+
+#if 0
+    /* argv[0] */
+    PUTC((char)_ARG_NONZERO);
+    PUTV;
+    for (;;)
+    {
+        PUTC(*pszSrc);
+        if (*pszSrc == 0)
+            break;
+        ++pszSrc;
+    }
+    ++pszSrc;
+#endif
+
+    for (;;)
+    {
+        while (WHITE(*pszSrc))
+            ++pszSrc;
+        if (*pszSrc == 0)
+            break;
+        pfFlags = pchPool;
+        PUTC((unsigned char)_ARG_NONZERO);
+        PUTV;
+        bs = 0; chQuote = 0;
+        for (;;)
+        {
+            if (!chQuote ? (*pszSrc == '"' /*|| *pszSrc == '\''*/) : *pszSrc == chQuote)
+            {
+                while (bs >= 2)
+                {
+                    PUTC('\\');
+                    bs -= 2;
+                }
+                if (bs & 1)
+                    PUTC(*pszSrc);
+                else
+                {
+                    chQuote = chQuote ? 0 : *pszSrc;
+                    if (pfFlags != NULL)
+                        *pfFlags |= _ARG_DQUOTE;
+                }
+                bs = 0;
+            }
+            else if (*pszSrc == '\\')
+                ++bs;
+            else
+            {
+                while (bs != 0)
+                {
+                    PUTC('\\');
+                    --bs;
+                }
+                if (*pszSrc == 0 || (WHITE(*pszSrc) && !chQuote))
+                    break;
+                PUTC(*pszSrc);
+            }
+            ++pszSrc;
+        }
+        PUTC(0);
+    }
+
+    *pcArgs = cArgs;
+    return cbArgs;
+}
+
+
+
+
+/*
+ *
+ * Process and thread related APIs.
+ * Process and thread related APIs.
+ * Process and thread related APIs.
+ *
+ */
+
+/** Common worker for ExitProcess(), exit() and friends.  */
+static void WINAPI kwSandboxDoExit(int uExitCode)
+{
+    if (g_Sandbox.idMainThread == GetCurrentThreadId())
+    {
+        PNT_TIB pTib = (PNT_TIB)NtCurrentTeb();
+
+        g_Sandbox.rcExitCode = (int)uExitCode;
+
+        /* Before we jump, restore the TIB as we're not interested in any
+           exception chain stuff installed by the sandboxed executable. */
+        *pTib = g_Sandbox.TibMainThread;
+        pTib->ExceptionList = g_Sandbox.pOutXcptListHead;
+
+        longjmp(g_Sandbox.JmpBuf, 1);
+    }
+    KWFS_TODO();
+}
+
+
+/** ExitProcess replacement.  */
+static void WINAPI kwSandbox_Kernel32_ExitProcess(UINT uExitCode)
+{
+    KW_LOG(("kwSandbox_Kernel32_ExitProcess: %u\n", uExitCode));
+    kwSandboxDoExit((int)uExitCode);
+}
+
+
+/** ExitProcess replacement.  */
+static BOOL WINAPI kwSandbox_Kernel32_TerminateProcess(HANDLE hProcess, UINT uExitCode)
+{
+    if (hProcess == GetCurrentProcess())
+        kwSandboxDoExit(uExitCode);
+    KWFS_TODO();
+    return TerminateProcess(hProcess, uExitCode);
+}
+
+
+/** Normal CRT exit(). */
+static void __cdecl kwSandbox_msvcrt_exit(int rcExitCode)
+{
+    KW_LOG(("kwSandbox_msvcrt_exit: %d\n", rcExitCode));
+    kwSandboxDoExit(rcExitCode);
+}
+
+
+/** Quick CRT _exit(). */
+static void __cdecl kwSandbox_msvcrt__exit(int rcExitCode)
+{
+    /* Quick. */
+    KW_LOG(("kwSandbox_msvcrt__exit %d\n", rcExitCode));
+    kwSandboxDoExit(rcExitCode);
+}
+
+
+/** Return to caller CRT _cexit(). */
+static void __cdecl kwSandbox_msvcrt__cexit(int rcExitCode)
+{
+    KW_LOG(("kwSandbox_msvcrt__cexit: %d\n", rcExitCode));
+    kwSandboxDoExit(rcExitCode);
+}
+
+
+/** Quick return to caller CRT _c_exit(). */
+static void __cdecl kwSandbox_msvcrt__c_exit(int rcExitCode)
+{
+    KW_LOG(("kwSandbox_msvcrt__c_exit: %d\n", rcExitCode));
+    kwSandboxDoExit(rcExitCode);
+}
+
+
+/** Runtime error and exit _amsg_exit(). */
+static void __cdecl kwSandbox_msvcrt__amsg_exit(int iMsgNo)
+{
+    KW_LOG(("\nRuntime error #%u!\n", iMsgNo));
+    kwSandboxDoExit(255);
+}
+
+
+/** CRT - terminate().  */
+static void __cdecl kwSandbox_msvcrt_terminate(void)
+{
+    KW_LOG(("\nRuntime - terminate!\n"));
+    kwSandboxDoExit(254);
+}
+
+
+/** CRT - _onexit   */
+static _onexit_t __cdecl kwSandbox_msvcrt__onexit(_onexit_t pfnFunc)
+{
+    //if (g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_LINK)
+    {
+        PKWEXITCALLACK pCallback;
+        KW_LOG(("_onexit(%p)\n", pfnFunc));
+        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+        pCallback = kHlpAlloc(sizeof(*pCallback));
+        if (pCallback)
+        {
+            pCallback->pfnCallback = pfnFunc;
+            pCallback->fAtExit     = K_FALSE;
+            pCallback->pNext       = g_Sandbox.pExitCallbackHead;
+            g_Sandbox.pExitCallbackHead = pCallback;
+            return pfnFunc;
+        }
+        return NULL;
+    }
+    //KW_LOG(("_onexit(%p) - IGNORED\n", pfnFunc));
+    //return pfnFunc;
+}
+
+
+/** CRT - atexit   */
+static int __cdecl kwSandbox_msvcrt_atexit(int (__cdecl *pfnFunc)(void))
+{
+    //if (g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_LINK)
+    {
+        PKWEXITCALLACK pCallback;
+        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+        KW_LOG(("atexit(%p)\n", pfnFunc));
+
+        pCallback = kHlpAlloc(sizeof(*pCallback));
+        if (pCallback)
+        {
+            pCallback->pfnCallback = (_onexit_t)pfnFunc;
+            pCallback->fAtExit     = K_TRUE;
+            pCallback->pNext       = g_Sandbox.pExitCallbackHead;
+            g_Sandbox.pExitCallbackHead = pCallback;
+            return 0;
+        }
+        return -1;
+    }
+    //KW_LOG(("atexit(%p) - IGNORED!\n", pfnFunc));
+    //return 0;
+}
+
+
+/** Kernel32 - SetConsoleCtrlHandler(). */
+static BOOL WINAPI kwSandbox_Kernel32_SetConsoleCtrlHandler(PHANDLER_ROUTINE pfnHandler, BOOL fAdd)
+{
+    KW_LOG(("SetConsoleCtrlHandler(%p, %d) - ignoring\n"));
+    return TRUE;
+}
+
+
+/** The CRT internal __getmainargs() API. */
+static int __cdecl kwSandbox_msvcrt___getmainargs(int *pargc, char ***pargv, char ***penvp,
+                                                  int dowildcard, int const *piNewMode)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    *pargc = g_Sandbox.cArgs;
+    *pargv = g_Sandbox.papszArgs;
+    *penvp = g_Sandbox.environ;
+
+    /** @todo startinfo points at a newmode (setmode) value.   */
+    return 0;
+}
+
+
+/** The CRT internal __wgetmainargs() API. */
+static int __cdecl kwSandbox_msvcrt___wgetmainargs(int *pargc, wchar_t ***pargv, wchar_t ***penvp,
+                                                   int dowildcard, int const *piNewMode)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    *pargc = g_Sandbox.cArgs;
+    *pargv = g_Sandbox.papwszArgs;
+    *penvp = g_Sandbox.wenviron;
+
+    /** @todo startinfo points at a newmode (setmode) value.   */
+    return 0;
+}
+
+
+
+/** Kernel32 - GetCommandLineA()  */
+static LPCSTR /*LPSTR*/ WINAPI kwSandbox_Kernel32_GetCommandLineA(VOID)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    return g_Sandbox.pszCmdLine;
+}
+
+
+/** Kernel32 - GetCommandLineW()  */
+static LPCWSTR /*LPWSTR*/ WINAPI kwSandbox_Kernel32_GetCommandLineW(VOID)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    return g_Sandbox.pwszCmdLine;
+}
+
+
+/** Kernel32 - GetStartupInfoA()  */
+static VOID WINAPI kwSandbox_Kernel32_GetStartupInfoA(LPSTARTUPINFOA pStartupInfo)
+{
+    KW_LOG(("GetStartupInfoA\n"));
+    GetStartupInfoA(pStartupInfo);
+    pStartupInfo->lpReserved  = NULL;
+    pStartupInfo->lpTitle     = NULL;
+    pStartupInfo->lpReserved2 = NULL;
+    pStartupInfo->cbReserved2 = 0;
+}
+
+
+/** Kernel32 - GetStartupInfoW()  */
+static VOID WINAPI kwSandbox_Kernel32_GetStartupInfoW(LPSTARTUPINFOW pStartupInfo)
+{
+    KW_LOG(("GetStartupInfoW\n"));
+    GetStartupInfoW(pStartupInfo);
+    pStartupInfo->lpReserved  = NULL;
+    pStartupInfo->lpTitle     = NULL;
+    pStartupInfo->lpReserved2 = NULL;
+    pStartupInfo->cbReserved2 = 0;
+}
+
+
+/** CRT - __p___argc().  */
+static int * __cdecl kwSandbox_msvcrt___p___argc(void)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    return &g_Sandbox.cArgs;
+}
+
+
+/** CRT - __p___argv().  */
+static char *** __cdecl kwSandbox_msvcrt___p___argv(void)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    return &g_Sandbox.papszArgs;
+}
+
+
+/** CRT - __p___sargv().  */
+static wchar_t *** __cdecl kwSandbox_msvcrt___p___wargv(void)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    return &g_Sandbox.papwszArgs;
+}
+
+
+/** CRT - __p__acmdln().  */
+static char ** __cdecl kwSandbox_msvcrt___p__acmdln(void)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    return (char **)&g_Sandbox.pszCmdLine;
+}
+
+
+/** CRT - __p__acmdln().  */
+static wchar_t ** __cdecl kwSandbox_msvcrt___p__wcmdln(void)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    return &g_Sandbox.pwszCmdLine;
+}
+
+
+/** CRT - __p__pgmptr().  */
+static char ** __cdecl kwSandbox_msvcrt___p__pgmptr(void)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    return &g_Sandbox.pgmptr;
+}
+
+
+/** CRT - __p__wpgmptr().  */
+static wchar_t ** __cdecl kwSandbox_msvcrt___p__wpgmptr(void)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    return &g_Sandbox.wpgmptr;
+}
+
+
+/** CRT - _get_pgmptr().  */
+static errno_t __cdecl kwSandbox_msvcrt__get_pgmptr(char **ppszValue)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    *ppszValue = g_Sandbox.pgmptr;
+    return 0;
+}
+
+
+/** CRT - _get_wpgmptr().  */
+static errno_t __cdecl kwSandbox_msvcrt__get_wpgmptr(wchar_t **ppwszValue)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    *ppwszValue = g_Sandbox.wpgmptr;
+    return 0;
+}
+
+/** Just in case. */
+static void kwSandbox_msvcrt__wincmdln(void)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    KWFS_TODO();
+}
+
+
+/** Just in case. */
+static void kwSandbox_msvcrt__wwincmdln(void)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    KWFS_TODO();
+}
+
+/** CreateThread interceptor. */
+static HANDLE WINAPI kwSandbox_Kernel32_CreateThread(LPSECURITY_ATTRIBUTES pSecAttr, SIZE_T cbStack,
+                                                     PTHREAD_START_ROUTINE pfnThreadProc, PVOID pvUser,
+                                                     DWORD fFlags, PDWORD pidThread)
+{
+    HANDLE hThread = NULL;
+    KW_LOG(("CreateThread: pSecAttr=%p (inh=%d) cbStack=%#x pfnThreadProc=%p pvUser=%p fFlags=%#x pidThread=%p\n",
+            pSecAttr, pSecAttr ? pSecAttr->bInheritHandle : 0, cbStack, pfnThreadProc, pvUser, fFlags, pidThread));
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    if (g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_LINK)
+    {
+        /* Allow link::DbgThread. */
+        hThread = CreateThread(pSecAttr, cbStack, pfnThreadProc, pvUser, fFlags, pidThread);
+        KW_LOG(("CreateThread -> %p, *pidThread=%#x\n", hThread, pidThread ? *pidThread : 0));
+    }
+    else
+        KWFS_TODO();
+    return hThread;
+}
+
+
+/** _beginthread - create a new thread. */
+static uintptr_t __cdecl kwSandbox_msvcrt__beginthread(void (__cdecl *pfnThreadProc)(void *), unsigned cbStack, void *pvUser)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    KWFS_TODO();
+    return 0;
+}
+
+
+/** _beginthreadex - create a new thread, msvcr120.dll hack for c2.dll. */
+static uintptr_t __cdecl kwSandbox_msvcr120__beginthreadex(void *pvSecAttr, unsigned cbStack,
+                                                           unsigned (__stdcall *pfnThreadProc)(void *), void *pvUser,
+                                                           unsigned fCreate, unsigned *pidThread)
+{
+    /*
+     * The VC++ 12 (VS 2013) compiler pass two is now threaded.  Let it do
+     * whatever it needs to.
+     */
+    KW_LOG(("kwSandbox_msvcr120__beginthreadex: pvSecAttr=%p (inh=%d) cbStack=%#x pfnThreadProc=%p pvUser=%p fCreate=%#x pidThread=%p\n",
+            pvSecAttr, pvSecAttr ? ((LPSECURITY_ATTRIBUTES)pvSecAttr)->bInheritHandle : 0, cbStack,
+            pfnThreadProc, pvUser, fCreate, pidThread));
+    if (g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_CL)
+    {
+        uintptr_t rcRet;
+        static uintptr_t (__cdecl *s_pfnReal)(void *, unsigned , unsigned (__stdcall *)(void *), void *, unsigned , unsigned *);
+        if (!s_pfnReal)
+        {
+            *(FARPROC *)&s_pfnReal = GetProcAddress(GetModuleHandleA("msvcr120.dll"), "_beginthreadex");
+            if (!s_pfnReal)
+            {
+                kwErrPrintf("kwSandbox_msvcr120__beginthreadex: Failed to resolve _beginthreadex in msvcr120.dll!\n");
+                __debugbreak();
+            }
+        }
+        rcRet = s_pfnReal(pvSecAttr, cbStack, pfnThreadProc, pvUser, fCreate, pidThread);
+        KW_LOG(("kwSandbox_msvcr120__beginthreadex: returns %p *pidThread=%#x\n", rcRet, pidThread ? *pidThread : -1));
+        return rcRet;
+    }
+
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    KWFS_TODO();
+    return 0;
+}
+
+
+/** _beginthreadex - create a new thread. */
+static uintptr_t __cdecl kwSandbox_msvcrt__beginthreadex_wrapped(void *pvSecAttr, unsigned cbStack,
+                                                                 unsigned (__stdcall *pfnThreadProc)(void *), void *pvUser,
+                                                                 unsigned fCreate, unsigned *pidThread, PKWCRTSLOT pSlot)
+{
+    /*
+     * Since the VC++ 12 (VS 2013) compiler, the 2nd pass is now threaded.
+     * Let it do whatever it needs to.
+     */
+    KW_LOG(("kwSandbox_msvcrt__beginthreadex: pvSecAttr=%p (inh=%d) cbStack=%#x pfnThreadProc=%p pvUser=%p fCreate=%#x pidThread=%p\n",
+            pvSecAttr, pvSecAttr ? ((LPSECURITY_ATTRIBUTES)pvSecAttr)->bInheritHandle : 0, cbStack,
+            pfnThreadProc, pvUser, fCreate, pidThread));
+    if (   g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_CL
+        && pSlot->pfnBeginThreadEx)
+    {
+        uintptr_t rcRet = pSlot->pfnBeginThreadEx(pvSecAttr, cbStack, pfnThreadProc, pvUser, fCreate, pidThread);
+        KW_LOG(("kwSandbox_msvcrt__beginthreadex: returns %p *pidThread=%#x\n", rcRet, pidThread ? *pidThread : -1));
+        return rcRet;
+    }
+
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    KWFS_TODO();
+    return 0;
+}
+
+CRT_SLOT_FUNCTION_WRAPPER(uintptr_t __cdecl, kwSandbox_msvcrt__beginthreadex,
+                          (void *pvSecAttr, unsigned cbStack, unsigned (__stdcall *pfnThreadProc)(void *),
+                           void *pvUser, unsigned fCreate, unsigned *pidThread),
+                          (pvSecAttr, cbStack, pfnThreadProc, pvUser, fCreate, pidThread, &g_aCrtSlots[iCrtSlot]));
+
+
+
+/*
+ *
+ * Environment related APIs.
+ * Environment related APIs.
+ * Environment related APIs.
+ *
+ */
+
+/** Kernel32 - GetEnvironmentStringsA (Watcom uses this one). */
+static LPCH WINAPI kwSandbox_Kernel32_GetEnvironmentStringsA(void)
+{
+    char *pszzEnv;
+    char *pszCur;
+    KSIZE cbNeeded = 1;
+    KSIZE iVar = 0;
+
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    /* Figure how space much we need first.  */
+    while ((pszCur = g_Sandbox.papszEnvVars[iVar++]) != NULL)
+        cbNeeded += kHlpStrLen(pszCur) + 1;
+
+    /* Allocate it. */
+    pszzEnv = kHlpAlloc(cbNeeded);
+    if (pszzEnv)
+    {
+        char *psz = pszzEnv;
+        iVar = 0;
+        while ((pszCur = g_Sandbox.papszEnvVars[iVar++]) != NULL)
+        {
+            KSIZE cbCur = kHlpStrLen(pszCur) + 1;
+            kHlpAssert((KUPTR)(&psz[cbCur] - pszzEnv) < cbNeeded);
+            psz = (char *)kHlpMemPCopy(psz, pszCur, cbCur);
+        }
+        *psz++ = '\0';
+        kHlpAssert((KUPTR)(psz - pszzEnv) == cbNeeded);
+    }
+
+    KW_LOG(("GetEnvironmentStringsA -> %p [%u]\n", pszzEnv, cbNeeded));
+#if 0
+    fprintf(stderr, "GetEnvironmentStringsA: %p LB %#x\n", pszzEnv, cbNeeded);
+    pszCur = pszzEnv;
+    iVar = 0;
+    while (*pszCur)
+    {
+        fprintf(stderr, "  %u:%p=%s<eos>\n\n", iVar, pszCur, pszCur);
+        iVar++;
+        pszCur += kHlpStrLen(pszCur) + 1;
+    }
+    fprintf(stderr, "  %u:%p=<eos>\n\n", iVar, pszCur);
+    pszCur++;
+    fprintf(stderr, "ended at %p, after %u bytes (expected %u)\n", pszCur, pszCur - pszzEnv, cbNeeded);
+#endif
+    return pszzEnv;
+}
+
+
+/** Kernel32 - GetEnvironmentStrings */
+static LPCH WINAPI kwSandbox_Kernel32_GetEnvironmentStrings(void)
+{
+    KW_LOG(("GetEnvironmentStrings!\n"));
+    return kwSandbox_Kernel32_GetEnvironmentStringsA();
+}
+
+
+/** Kernel32 - GetEnvironmentStringsW */
+static LPWCH WINAPI kwSandbox_Kernel32_GetEnvironmentStringsW(void)
+{
+    wchar_t *pwszzEnv;
+    wchar_t *pwszCur;
+    KSIZE    cwcNeeded = 1;
+    KSIZE    iVar = 0;
+
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    /* Figure how space much we need first.  */
+    while ((pwszCur = g_Sandbox.papwszEnvVars[iVar++]) != NULL)
+        cwcNeeded += kwUtf16Len(pwszCur) + 1;
+
+    /* Allocate it. */
+    pwszzEnv = kHlpAlloc(cwcNeeded * sizeof(wchar_t));
+    if (pwszzEnv)
+    {
+        wchar_t *pwsz = pwszzEnv;
+        iVar = 0;
+        while ((pwszCur = g_Sandbox.papwszEnvVars[iVar++]) != NULL)
+        {
+            KSIZE cwcCur = kwUtf16Len(pwszCur) + 1;
+            kHlpAssert((KUPTR)(&pwsz[cwcCur] - pwszzEnv) < cwcNeeded);
+            pwsz = (wchar_t *)kHlpMemPCopy(pwsz, pwszCur, cwcCur * sizeof(wchar_t));
+        }
+        *pwsz++ = '\0';
+        kHlpAssert((KUPTR)(pwsz - pwszzEnv) == cwcNeeded);
+    }
+
+    KW_LOG(("GetEnvironmentStringsW -> %p [%u]\n", pwszzEnv, cwcNeeded));
+    return pwszzEnv;
+}
+
+
+/** Kernel32 - FreeEnvironmentStringsA   */
+static BOOL WINAPI kwSandbox_Kernel32_FreeEnvironmentStringsA(LPCH pszzEnv)
+{
+    KW_LOG(("FreeEnvironmentStringsA: %p -> TRUE\n", pszzEnv));
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    kHlpFree(pszzEnv);
+    return TRUE;
+}
+
+
+/** Kernel32 - FreeEnvironmentStringsW   */
+static BOOL WINAPI kwSandbox_Kernel32_FreeEnvironmentStringsW(LPWCH pwszzEnv)
+{
+    KW_LOG(("FreeEnvironmentStringsW: %p -> TRUE\n", pwszzEnv));
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    kHlpFree(pwszzEnv);
+    return TRUE;
+}
+
+
+/**
+ * Grows the environment vectors (KWSANDBOX::environ, KWSANDBOX::papszEnvVars,
+ * KWSANDBOX::wenviron, and KWSANDBOX::papwszEnvVars).
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pSandbox            The sandbox.
+ * @param   cMin                Minimum size, including terminator.
+ */
+static int kwSandboxGrowEnv(PKWSANDBOX pSandbox, KSIZE cMin)
+{
+    void       *pvNew;
+    KSIZE const cOld = pSandbox->cEnvVarsAllocated;
+    KSIZE       cNew = cOld + 256;
+    while (cNew < cMin)
+        cNew += 256;
+
+    pvNew = kHlpRealloc(pSandbox->environ, cNew * sizeof(pSandbox->environ[0]));
+    if (pvNew)
+    {
+        pSandbox->environ = (char **)pvNew;
+        pSandbox->environ[cOld] = NULL;
+
+        pvNew = kHlpRealloc(pSandbox->papszEnvVars, cNew * sizeof(pSandbox->papszEnvVars[0]));
+        if (pvNew)
+        {
+            pSandbox->papszEnvVars = (char **)pvNew;
+            pSandbox->papszEnvVars[cOld] = NULL;
+
+            pvNew = kHlpRealloc(pSandbox->wenviron, cNew * sizeof(pSandbox->wenviron[0]));
+            if (pvNew)
+            {
+                pSandbox->wenviron = (wchar_t **)pvNew;
+                pSandbox->wenviron[cOld] = NULL;
+
+                pvNew = kHlpRealloc(pSandbox->papwszEnvVars, cNew * sizeof(pSandbox->papwszEnvVars[0]));
+                if (pvNew)
+                {
+                    pSandbox->papwszEnvVars = (wchar_t **)pvNew;
+                    pSandbox->papwszEnvVars[cOld] = NULL;
+
+                    pSandbox->cEnvVarsAllocated = cNew;
+                    KW_LOG(("kwSandboxGrowEnv: cNew=%d - crt: %p / %p; shadow: %p, %p\n",
+                            cNew, pSandbox->environ, pSandbox->wenviron, pSandbox->papszEnvVars, pSandbox->papwszEnvVars));
+                    return 0;
+                }
+            }
+        }
+    }
+    kwErrPrintf("kwSandboxGrowEnv ran out of memory! cNew=%u\n", cNew);
+    return KERR_NO_MEMORY;
+}
+
+
+/**
+ * Sets an environment variable, ANSI style.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pSandbox            The sandbox.
+ * @param   pchVar              The variable name.
+ * @param   cchVar              The length of the name.
+ * @param   pszValue            The value.
+ */
+static int kwSandboxDoSetEnvA(PKWSANDBOX pSandbox, const char *pchVar, KSIZE cchVar, const char *pszValue)
+{
+    /* Allocate and construct the new strings. */
+    KSIZE  cchTmp = kHlpStrLen(pszValue);
+    char  *pszNew = (char *)kHlpAlloc(cchVar + 1 + cchTmp + 1);
+    if (pszNew)
+    {
+        wchar_t *pwszNew;
+        kHlpMemCopy(pszNew, pchVar, cchVar);
+        pszNew[cchVar] = '=';
+        kHlpMemCopy(&pszNew[cchVar + 1], pszValue, cchTmp);
+        cchTmp += cchVar + 1;
+        pszNew[cchTmp] = '\0';
+
+        pwszNew = kwStrToUtf16AllocN(pszNew, cchTmp);
+        if (pwszNew)
+        {
+            /* Look it up. */
+            KSIZE   iVar = 0;
+            char   *pszEnv;
+            while ((pszEnv = pSandbox->papszEnvVars[iVar]) != NULL)
+            {
+                if (   _strnicmp(pszEnv, pchVar, cchVar) == 0
+                    && pszEnv[cchVar] == '=')
+                {
+                    KW_LOG(("kwSandboxDoSetEnvA: Replacing iVar=%d: %p='%s' and %p='%ls'\n"
+                            "                              iVar=%d: %p='%s' and %p='%ls'\n",
+                            iVar, pSandbox->papszEnvVars[iVar], pSandbox->papszEnvVars[iVar],
+                            pSandbox->papwszEnvVars[iVar], pSandbox->papwszEnvVars[iVar],
+                            iVar, pszNew, pszNew, pwszNew, pwszNew));
+
+                    kHlpFree(pSandbox->papszEnvVars[iVar]);
+                    pSandbox->papszEnvVars[iVar]  = pszNew;
+                    pSandbox->environ[iVar]       = pszNew;
+
+                    kHlpFree(pSandbox->papwszEnvVars[iVar]);
+                    pSandbox->papwszEnvVars[iVar] = pwszNew;
+                    pSandbox->wenviron[iVar]      = pwszNew;
+                    return 0;
+                }
+                iVar++;
+            }
+
+            /* Not found, do we need to grow the table first? */
+            if (iVar + 1 >= pSandbox->cEnvVarsAllocated)
+                kwSandboxGrowEnv(pSandbox, iVar + 2);
+            if (iVar + 1 < pSandbox->cEnvVarsAllocated)
+            {
+                KW_LOG(("kwSandboxDoSetEnvA: Adding iVar=%d: %p='%s' and %p='%ls'\n", iVar, pszNew, pszNew, pwszNew, pwszNew));
+
+                pSandbox->papszEnvVars[iVar + 1]  = NULL;
+                pSandbox->papszEnvVars[iVar]      = pszNew;
+                pSandbox->environ[iVar + 1]       = NULL;
+                pSandbox->environ[iVar]           = pszNew;
+
+                pSandbox->papwszEnvVars[iVar + 1] = NULL;
+                pSandbox->papwszEnvVars[iVar]     = pwszNew;
+                pSandbox->wenviron[iVar + 1]      = NULL;
+                pSandbox->wenviron[iVar]          = pwszNew;
+                return 0;
+            }
+
+            kHlpFree(pwszNew);
+        }
+        kHlpFree(pszNew);
+    }
+    KW_LOG(("Out of memory!\n"));
+    return 0;
+}
+
+
+/**
+ * Sets an environment variable, UTF-16 style.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pSandbox            The sandbox.
+ * @param   pwcVar              The variable name.
+ * @param   cwcVar              The length of the name.
+ * @param   pwszValue           The value.
+ */
+static int kwSandboxDoSetEnvW(PKWSANDBOX pSandbox, const wchar_t *pwchVar, KSIZE cwcVar, const wchar_t *pwszValue)
+{
+    /* Allocate and construct the new strings. */
+    KSIZE    cwcTmp = kwUtf16Len(pwszValue);
+    wchar_t *pwszNew = (wchar_t *)kHlpAlloc((cwcVar + 1 + cwcTmp + 1) * sizeof(wchar_t));
+    if (pwszNew)
+    {
+        char *pszNew;
+        kHlpMemCopy(pwszNew, pwchVar, cwcVar * sizeof(wchar_t));
+        pwszNew[cwcVar] = '=';
+        kHlpMemCopy(&pwszNew[cwcVar + 1], pwszValue, cwcTmp * sizeof(wchar_t));
+        cwcTmp += cwcVar + 1;
+        pwszNew[cwcVar] = '\0';
+
+        pszNew = kwUtf16ToStrAllocN(pwszNew, cwcVar);
+        if (pszNew)
+        {
+            /* Look it up. */
+            KSIZE    iVar = 0;
+            wchar_t *pwszEnv;
+            while ((pwszEnv = pSandbox->papwszEnvVars[iVar]) != NULL)
+            {
+                if (   _wcsnicmp(pwszEnv, pwchVar, cwcVar) == 0
+                    && pwszEnv[cwcVar] == '=')
+                {
+                    KW_LOG(("kwSandboxDoSetEnvW: Replacing iVar=%d: %p='%s' and %p='%ls'\n"
+                            "                              iVar=%d: %p='%s' and %p='%ls'\n",
+                            iVar, pSandbox->papszEnvVars[iVar], pSandbox->papszEnvVars[iVar],
+                            pSandbox->papwszEnvVars[iVar], pSandbox->papwszEnvVars[iVar],
+                            iVar, pszNew, pszNew, pwszNew, pwszNew));
+
+                    kHlpFree(pSandbox->papszEnvVars[iVar]);
+                    pSandbox->papszEnvVars[iVar]  = pszNew;
+                    pSandbox->environ[iVar]       = pszNew;
+
+                    kHlpFree(pSandbox->papwszEnvVars[iVar]);
+                    pSandbox->papwszEnvVars[iVar] = pwszNew;
+                    pSandbox->wenviron[iVar]      = pwszNew;
+                    return 0;
+                }
+                iVar++;
+            }
+
+            /* Not found, do we need to grow the table first? */
+            if (iVar + 1 >= pSandbox->cEnvVarsAllocated)
+                kwSandboxGrowEnv(pSandbox, iVar + 2);
+            if (iVar + 1 < pSandbox->cEnvVarsAllocated)
+            {
+                KW_LOG(("kwSandboxDoSetEnvW: Adding iVar=%d: %p='%s' and %p='%ls'\n", iVar, pszNew, pszNew, pwszNew, pwszNew));
+
+                pSandbox->papszEnvVars[iVar + 1]  = NULL;
+                pSandbox->papszEnvVars[iVar]      = pszNew;
+                pSandbox->environ[iVar + 1]       = NULL;
+                pSandbox->environ[iVar]           = pszNew;
+
+                pSandbox->papwszEnvVars[iVar + 1] = NULL;
+                pSandbox->papwszEnvVars[iVar]     = pwszNew;
+                pSandbox->wenviron[iVar + 1]      = NULL;
+                pSandbox->wenviron[iVar]          = pwszNew;
+                return 0;
+            }
+
+            kHlpFree(pwszNew);
+        }
+        kHlpFree(pszNew);
+    }
+    KW_LOG(("Out of memory!\n"));
+    return 0;
+}
+
+
+/** ANSI unsetenv worker. */
+static int kwSandboxDoUnsetEnvA(PKWSANDBOX pSandbox, const char *pchVar, KSIZE cchVar)
+{
+    KSIZE   iVar   = 0;
+    char   *pszEnv;
+    while ((pszEnv = pSandbox->papszEnvVars[iVar]) != NULL)
+    {
+        if (   _strnicmp(pszEnv, pchVar, cchVar) == 0
+            && pszEnv[cchVar] == '=')
+        {
+            KSIZE cVars = iVar;
+            while (pSandbox->papszEnvVars[cVars])
+                cVars++;
+            kHlpAssert(pSandbox->papwszEnvVars[iVar] != NULL);
+            kHlpAssert(pSandbox->papwszEnvVars[cVars] == NULL);
+
+            KW_LOG(("kwSandboxDoUnsetEnvA: Removing iVar=%d: %p='%s' and %p='%ls'; new cVars=%d\n", iVar,
+                    pSandbox->papszEnvVars[iVar], pSandbox->papszEnvVars[iVar],
+                    pSandbox->papwszEnvVars[iVar], pSandbox->papwszEnvVars[iVar], cVars - 1));
+
+            kHlpFree(pSandbox->papszEnvVars[iVar]);
+            pSandbox->papszEnvVars[iVar]    = pSandbox->papszEnvVars[cVars];
+            pSandbox->environ[iVar]         = pSandbox->papszEnvVars[cVars];
+            pSandbox->papszEnvVars[cVars]   = NULL;
+            pSandbox->environ[cVars]        = NULL;
+
+            kHlpFree(pSandbox->papwszEnvVars[iVar]);
+            pSandbox->papwszEnvVars[iVar]   = pSandbox->papwszEnvVars[cVars];
+            pSandbox->wenviron[iVar]        = pSandbox->papwszEnvVars[cVars];
+            pSandbox->papwszEnvVars[cVars]  = NULL;
+            pSandbox->wenviron[cVars]       = NULL;
+            return 0;
+        }
+        iVar++;
+    }
+    return KERR_ENVVAR_NOT_FOUND;
+}
+
+
+/** UTF-16 unsetenv worker. */
+static int kwSandboxDoUnsetEnvW(PKWSANDBOX pSandbox, const wchar_t *pwcVar, KSIZE cwcVar)
+{
+    KSIZE    iVar   = 0;
+    wchar_t *pwszEnv;
+    while ((pwszEnv = pSandbox->papwszEnvVars[iVar]) != NULL)
+    {
+        if (   _wcsnicmp(pwszEnv, pwcVar, cwcVar) == 0
+            && pwszEnv[cwcVar] == '=')
+        {
+            KSIZE cVars = iVar;
+            while (pSandbox->papwszEnvVars[cVars])
+                cVars++;
+            kHlpAssert(pSandbox->papszEnvVars[iVar] != NULL);
+            kHlpAssert(pSandbox->papszEnvVars[cVars] == NULL);
+
+            KW_LOG(("kwSandboxDoUnsetEnvA: Removing iVar=%d: %p='%s' and %p='%ls'; new cVars=%d\n", iVar,
+                    pSandbox->papszEnvVars[iVar], pSandbox->papszEnvVars[iVar],
+                    pSandbox->papwszEnvVars[iVar], pSandbox->papwszEnvVars[iVar], cVars - 1));
+
+            kHlpFree(pSandbox->papszEnvVars[iVar]);
+            pSandbox->papszEnvVars[iVar]    = pSandbox->papszEnvVars[cVars];
+            pSandbox->environ[iVar]         = pSandbox->papszEnvVars[cVars];
+            pSandbox->papszEnvVars[cVars]   = NULL;
+            pSandbox->environ[cVars]        = NULL;
+
+            kHlpFree(pSandbox->papwszEnvVars[iVar]);
+            pSandbox->papwszEnvVars[iVar]   = pSandbox->papwszEnvVars[cVars];
+            pSandbox->wenviron[iVar]        = pSandbox->papwszEnvVars[cVars];
+            pSandbox->papwszEnvVars[cVars]  = NULL;
+            pSandbox->wenviron[cVars]       = NULL;
+            return 0;
+        }
+        iVar++;
+    }
+    return KERR_ENVVAR_NOT_FOUND;
+}
+
+
+
+/** ANSI getenv worker. */
+static char *kwSandboxDoGetEnvA(PKWSANDBOX pSandbox, const char *pchVar, KSIZE cchVar)
+{
+    KSIZE   iVar   = 0;
+    char   *pszEnv;
+    while ((pszEnv = pSandbox->papszEnvVars[iVar++]) != NULL)
+        if (   _strnicmp(pszEnv, pchVar, cchVar) == 0
+            && pszEnv[cchVar] == '=')
+            return &pszEnv[cchVar + 1];
+    return NULL;
+}
+
+
+/** UTF-16 getenv worker. */
+static wchar_t *kwSandboxDoGetEnvW(PKWSANDBOX pSandbox, const wchar_t *pwcVar, KSIZE cwcVar)
+{
+    KSIZE    iVar   = 0;
+    wchar_t *pwszEnv;
+    while ((pwszEnv = pSandbox->papwszEnvVars[iVar++]) != NULL)
+        if (   _wcsnicmp(pwszEnv, pwcVar, cwcVar) == 0
+            && pwszEnv[cwcVar] == '=')
+            return &pwszEnv[cwcVar + 1];
+    return NULL;
+}
+
+
+/** Kernel32 - GetEnvironmentVariableA()  */
+static DWORD WINAPI kwSandbox_Kernel32_GetEnvironmentVariableA(LPCSTR pszVar, LPSTR pszValue, DWORD cbValue)
+{
+    char *pszFoundValue;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    pszFoundValue = kwSandboxDoGetEnvA(&g_Sandbox, pszVar, kHlpStrLen(pszVar));
+    if (pszFoundValue)
+    {
+        DWORD cchRet = kwStrCopyStyle1(pszFoundValue, pszValue, cbValue);
+        KW_LOG(("GetEnvironmentVariableA: '%s' -> %u (%s)\n", pszVar, cchRet, pszFoundValue));
+        return cchRet;
+    }
+    KW_LOG(("GetEnvironmentVariableA: '%s' -> 0\n", pszVar));
+    SetLastError(ERROR_ENVVAR_NOT_FOUND);
+    return 0;
+}
+
+
+/** Kernel32 - GetEnvironmentVariableW()  */
+static DWORD WINAPI kwSandbox_Kernel32_GetEnvironmentVariableW(LPCWSTR pwszVar, LPWSTR pwszValue, DWORD cwcValue)
+{
+    wchar_t *pwszFoundValue;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    pwszFoundValue = kwSandboxDoGetEnvW(&g_Sandbox, pwszVar, kwUtf16Len(pwszVar));
+    if (pwszFoundValue)
+    {
+        DWORD cchRet = kwUtf16CopyStyle1(pwszFoundValue, pwszValue, cwcValue);
+        KW_LOG(("GetEnvironmentVariableW: '%ls' -> %u (%ls)\n", pwszVar, cchRet, pwszFoundValue));
+        return cchRet;
+    }
+    KW_LOG(("GetEnvironmentVariableW: '%ls' -> 0\n", pwszVar));
+    SetLastError(ERROR_ENVVAR_NOT_FOUND);
+    return 0;
+}
+
+
+/** Kernel32 - SetEnvironmentVariableA()  */
+static BOOL WINAPI kwSandbox_Kernel32_SetEnvironmentVariableA(LPCSTR pszVar, LPCSTR pszValue)
+{
+    int rc;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    if (pszValue)
+        rc = kwSandboxDoSetEnvA(&g_Sandbox, pszVar, kHlpStrLen(pszVar), pszValue);
+    else
+    {
+        kwSandboxDoUnsetEnvA(&g_Sandbox, pszVar, kHlpStrLen(pszVar));
+        rc = 0; //??
+    }
+    if (rc == 0)
+    {
+        KW_LOG(("SetEnvironmentVariableA(%s,%s) -> TRUE\n", pszVar, pszValue));
+        return TRUE;
+    }
+    SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+    KW_LOG(("SetEnvironmentVariableA(%s,%s) -> FALSE!\n", pszVar, pszValue));
+    return FALSE;
+}
+
+
+/** Kernel32 - SetEnvironmentVariableW()  */
+static BOOL WINAPI kwSandbox_Kernel32_SetEnvironmentVariableW(LPCWSTR pwszVar, LPCWSTR pwszValue)
+{
+    int rc;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    if (pwszValue)
+        rc = kwSandboxDoSetEnvW(&g_Sandbox, pwszVar, kwUtf16Len(pwszVar), pwszValue);
+    else
+    {
+        kwSandboxDoUnsetEnvW(&g_Sandbox, pwszVar, kwUtf16Len(pwszVar));
+        rc = 0; //??
+    }
+    if (rc == 0)
+    {
+        KW_LOG(("SetEnvironmentVariableA(%ls,%ls) -> TRUE\n", pwszVar, pwszValue));
+        return TRUE;
+    }
+    SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+    KW_LOG(("SetEnvironmentVariableA(%ls,%ls) -> FALSE!\n", pwszVar, pwszValue));
+    return FALSE;
+}
+
+
+/** Kernel32 - ExpandEnvironmentStringsA()  */
+static DWORD WINAPI kwSandbox_Kernel32_ExpandEnvironmentStringsA(LPCSTR pszSrc, LPSTR pwszDst, DWORD cbDst)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    KWFS_TODO();
+    return 0;
+}
+
+
+/** Kernel32 - ExpandEnvironmentStringsW()  */
+static DWORD WINAPI kwSandbox_Kernel32_ExpandEnvironmentStringsW(LPCWSTR pwszSrc, LPWSTR pwszDst, DWORD cbDst)
+{
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    KWFS_TODO();
+    return 0;
+}
+
+
+/** CRT - _putenv(). */
+static int __cdecl kwSandbox_msvcrt__putenv(const char *pszVarEqualValue)
+{
+    int rc;
+    char const *pszEqual;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    pszEqual = kHlpStrChr(pszVarEqualValue, '=');
+    if (pszEqual)
+    {
+        rc = kwSandboxDoSetEnvA(&g_Sandbox, pszVarEqualValue, pszEqual - pszVarEqualValue, pszEqual + 1);
+        if (rc == 0)
+        { }
+        else
+            rc = -1;
+    }
+    else
+    {
+        kwSandboxDoUnsetEnvA(&g_Sandbox, pszVarEqualValue, kHlpStrLen(pszVarEqualValue));
+        rc = 0;
+    }
+    KW_LOG(("_putenv(%s) -> %d\n", pszVarEqualValue, rc));
+    return rc;
+}
+
+
+/** CRT - _wputenv(). */
+static int __cdecl kwSandbox_msvcrt__wputenv(const wchar_t *pwszVarEqualValue)
+{
+    int rc;
+    wchar_t const *pwszEqual;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    pwszEqual = wcschr(pwszVarEqualValue, '=');
+    if (pwszEqual)
+    {
+        rc = kwSandboxDoSetEnvW(&g_Sandbox, pwszVarEqualValue, pwszEqual - pwszVarEqualValue, pwszEqual + 1);
+        if (rc == 0)
+        { }
+        else
+            rc = -1;
+    }
+    else
+    {
+        kwSandboxDoUnsetEnvW(&g_Sandbox, pwszVarEqualValue, kwUtf16Len(pwszVarEqualValue));
+        rc = 0;
+    }
+    KW_LOG(("_wputenv(%ls) -> %d\n", pwszVarEqualValue, rc));
+    return rc;
+}
+
+
+/** CRT - _putenv_s(). */
+static errno_t __cdecl kwSandbox_msvcrt__putenv_s(const char *pszVar, const char *pszValue)
+{
+    char const *pszEqual;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    pszEqual = kHlpStrChr(pszVar, '=');
+    if (pszEqual == NULL)
+    {
+        if (pszValue)
+        {
+            int rc = kwSandboxDoSetEnvA(&g_Sandbox, pszVar, kHlpStrLen(pszVar), pszValue);
+            if (rc == 0)
+            {
+                KW_LOG(("_putenv_s(%s,%s) -> 0\n", pszVar, pszValue));
+                return 0;
+            }
+        }
+        else
+        {
+            kwSandboxDoUnsetEnvA(&g_Sandbox, pszVar, kHlpStrLen(pszVar));
+            KW_LOG(("_putenv_s(%ls,NULL) -> 0\n", pszVar));
+            return 0;
+        }
+        KW_LOG(("_putenv_s(%s,%s) -> ENOMEM\n", pszVar, pszValue));
+        return ENOMEM;
+    }
+    KW_LOG(("_putenv_s(%s,%s) -> EINVAL\n", pszVar, pszValue));
+    return EINVAL;
+}
+
+
+/** CRT - _wputenv_s(). */
+static errno_t __cdecl kwSandbox_msvcrt__wputenv_s(const wchar_t *pwszVar, const wchar_t *pwszValue)
+{
+    wchar_t const *pwszEqual;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    pwszEqual = wcschr(pwszVar, '=');
+    if (pwszEqual == NULL)
+    {
+        if (pwszValue)
+        {
+            int rc = kwSandboxDoSetEnvW(&g_Sandbox, pwszVar, kwUtf16Len(pwszVar), pwszValue);
+            if (rc == 0)
+            {
+                KW_LOG(("_wputenv_s(%ls,%ls) -> 0\n", pwszVar, pwszValue));
+                return 0;
+            }
+        }
+        else
+        {
+            kwSandboxDoUnsetEnvW(&g_Sandbox, pwszVar, kwUtf16Len(pwszVar));
+            KW_LOG(("_wputenv_s(%ls,NULL) -> 0\n", pwszVar));
+            return 0;
+        }
+        KW_LOG(("_wputenv_s(%ls,%ls) -> ENOMEM\n", pwszVar, pwszValue));
+        return ENOMEM;
+    }
+    KW_LOG(("_wputenv_s(%ls,%ls) -> EINVAL\n", pwszVar, pwszValue));
+    return EINVAL;
+}
+
+
+/** CRT - get pointer to the __initenv variable (initial environment).   */
+static char *** __cdecl kwSandbox_msvcrt___p___initenv(void)
+{
+    KW_LOG(("__p___initenv\n"));
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    KWFS_TODO();
+    return &g_Sandbox.initenv;
+}
+
+
+/** CRT - get pointer to the __winitenv variable (initial environment).   */
+static wchar_t *** __cdecl kwSandbox_msvcrt___p___winitenv(void)
+{
+    KW_LOG(("__p___winitenv\n"));
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    KWFS_TODO();
+    return &g_Sandbox.winitenv;
+}
+
+
+/** CRT - get pointer to the _environ variable (current environment).   */
+static char *** __cdecl kwSandbox_msvcrt___p__environ(void)
+{
+    KW_LOG(("__p__environ\n"));
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    return &g_Sandbox.environ;
+}
+
+
+/** CRT - get pointer to the _wenviron variable (current environment).   */
+static wchar_t *** __cdecl kwSandbox_msvcrt___p__wenviron(void)
+{
+    KW_LOG(("__p__wenviron\n"));
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    return &g_Sandbox.wenviron;
+}
+
+
+/** CRT - get the _environ variable (current environment).
+ * @remarks Not documented or prototyped?  */
+static KUPTR /*void*/ __cdecl kwSandbox_msvcrt__get_environ(char ***ppapszEnviron)
+{
+    KWFS_TODO(); /** @todo check the callers expectations! */
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    *ppapszEnviron = g_Sandbox.environ;
+    return 0;
+}
+
+
+/** CRT - get the _wenviron variable (current environment).
+ * @remarks Not documented or prototyped? */
+static KUPTR /*void*/ __cdecl kwSandbox_msvcrt__get_wenviron(wchar_t ***ppapwszEnviron)
+{
+    KWFS_TODO(); /** @todo check the callers expectations! */
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    *ppapwszEnviron = g_Sandbox.wenviron;
+    return 0;
+}
+
+
+/** CRT - _wdupenv_s() (see _tdupenv_s(). */
+static errno_t __cdecl kwSandbox_msvcrt__wdupenv_s_wrapped(wchar_t **ppwszValue, size_t *pcwcValue, const wchar_t *pwszVarName,
+                                                           PKWCRTSLOT pSlot)
+{
+    errno_t rc;
+    wchar_t *pwszValue;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    if (ppwszValue)
+    {
+        pwszValue = kwSandboxDoGetEnvW(&g_Sandbox, pwszVarName, wcslen(pwszVarName));
+        if (pwszValue)
+        {
+            size_t cwcValue = wcslen(pwszValue);
+            wchar_t *pwszDst = pSlot->pfnMalloc ? (wchar_t *)pSlot->pfnMalloc((cwcValue + 1) * sizeof(wchar_t)) : NULL;
+            if (pwszDst)
+            {
+                memcpy(pwszDst, pwszValue, cwcValue * sizeof(wchar_t));
+                pwszDst[cwcValue] = '\0';
+                *ppwszValue = pwszDst;
+                if (pcwcValue)
+                    *pcwcValue = cwcValue;
+                rc = 0;
+            }
+            else
+            {
+                *ppwszValue = NULL;
+                if (pcwcValue)
+                    *pcwcValue  = 0;
+                rc = ENOMEM;
+            }
+        }
+        else
+        {
+            *ppwszValue = NULL;
+            if (pcwcValue)
+                *pcwcValue = 0;
+            rc = 0;
+        }
+        KW_LOG(("_wdupenv_s(,,%ls) -> %d '%ls'\n", pwszVarName, rc, *ppwszValue ? *ppwszValue : L"<null>"));
+        //fprintf(stderr, "%d: _wdupenv_s(,,%ls) -> %d '%ls'\n", getpid(), pwszVarName, rc, *ppwszValue ? *ppwszValue : L"<null>"); fflush(stderr); // HACKING
+    }
+    else
+    {
+        /*
+         * Warning! If mspdb100.dll ends up here, it won't reinitialize the event name
+         *          and continue to use the one it constructed when _MSPDBSRV_ENDPOINT_
+         *          was set to a value.
+         */
+        if (pcwcValue)
+            *pcwcValue = 0;
+        rc = EINVAL;
+        KW_LOG(("_wdupenv_s(,,%ls) -> EINVAL\n", pwszVarName));
+        //fprintf(stderr, "%d: _wdupenv_s(,,%ls) -> EINVAL\n", getpid(), pwszVarName); fflush(stderr); // HACKING
+    }
+    return rc;
+}
+CRT_SLOT_FUNCTION_WRAPPER(errno_t __cdecl, kwSandbox_msvcrt__wdupenv_s,
+                          (wchar_t **ppwszValue, size_t *pcwcValue, const wchar_t *pwszVarName),
+                          (ppwszValue, pcwcValue, pwszVarName, &g_aCrtSlots[iCrtSlot]));
+
+
+
+/*
+ *
+ * Loader related APIs
+ * Loader related APIs
+ * Loader related APIs
+ *
+ */
+
+/**
+ * Kernel32 - LoadLibraryExA() worker that loads resource files and such.
+ */
+static HMODULE WINAPI kwSandbox_Kernel32_LoadLibraryExA_Resource(PKWDYNLOAD pDynLoad, DWORD fFlags)
+{
+    /* Load it first. */
+    HMODULE hmod = LoadLibraryExA(pDynLoad->szRequest, NULL /*hFile*/, fFlags);
+    if (hmod)
+    {
+        pDynLoad->hmod = hmod;
+        pDynLoad->pMod = NULL; /* indicates special  */
+
+        pDynLoad->pNext = g_Sandbox.pTool->u.Sandboxed.pDynLoadHead;
+        g_Sandbox.pTool->u.Sandboxed.pDynLoadHead = pDynLoad;
+        KWLDR_LOG(("LoadLibraryExA(%s,,[resource]) -> %p\n", pDynLoad->szRequest, pDynLoad->hmod));
+    }
+    else
+        kHlpFree(pDynLoad);
+    return hmod;
+}
+
+
+/**
+ * Kernel32 - LoadLibraryExA() worker that deals with the api-ms-xxx modules.
+ */
+static HMODULE WINAPI kwSandbox_Kernel32_LoadLibraryExA_VirtualApiModule(PKWDYNLOAD pDynLoad, DWORD fFlags)
+{
+    static const char s_szDll[] = ".dll";
+    KSIZE       cbFilename = kHlpStrLen(pDynLoad->szRequest) + 1;
+    PKWMODULE   pMod;
+    char        szNormPath[256];
+
+    /*
+     * Lower case it and make sure it ends with .dll.
+     */
+    if (cbFilename > sizeof(szNormPath))
+    {
+        SetLastError(ERROR_FILENAME_EXCED_RANGE);
+        return NULL;
+    }
+    kHlpMemCopy(szNormPath, pDynLoad->szRequest, cbFilename);
+    _strlwr(szNormPath);
+    kHlpAssert(cbFilename > 7 /* api-ms- */ );
+    if (strcmp(&szNormPath[cbFilename - 5], s_szDll) != 0)
+    {
+        if (cbFilename + sizeof(s_szDll) - 1 > sizeof(szNormPath))
+        {
+            SetLastError(ERROR_FILENAME_EXCED_RANGE);
+            return NULL;
+        }
+
+        memcpy(&szNormPath[cbFilename - sizeof(s_szDll)], s_szDll, sizeof(s_szDll));
+        cbFilename += sizeof(s_szDll) - 1;
+    }
+
+    /*
+     * Try load it.
+     */
+    pMod = kwLdrModuleTryLoadVirtualDll(szNormPath, cbFilename - 1);
+    if (pMod)
+    {
+        kwToolAddModuleAndImports(g_Sandbox.pTool, pMod);
+
+        pDynLoad->pMod = pMod;
+        pDynLoad->hmod = pMod->hOurMod;
+
+        pDynLoad->pNext = g_Sandbox.pTool->u.Sandboxed.pDynLoadHead;
+        g_Sandbox.pTool->u.Sandboxed.pDynLoadHead = pDynLoad;
+        KWLDR_LOG(("LoadLibraryExA(%s,,) -> %p [virtual API module - new]\n", pDynLoad->szRequest, pDynLoad->hmod));
+        return pDynLoad->hmod;
+    }
+    kHlpFree(pDynLoad);
+    return NULL;
+}
+
+
+/** Kernel32 - LoadLibraryExA() */
+static HMODULE WINAPI kwSandbox_Kernel32_LoadLibraryExA(LPCSTR pszFilename, HANDLE hFile, DWORD fFlags)
+{
+    KSIZE       cchFilename = kHlpStrLen(pszFilename);
+    const char *pszSearchPath;
+    PKWDYNLOAD  pDynLoad;
+    PKWMODULE   pMod;
+    int         rc;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    //fprintf(stderr, "LoadLibraryExA: %s, %#x\n", pszFilename, fFlags);
+
+    /*
+     * Deal with a couple of extremely unlikely special cases right away.
+     */
+    if (   (   !(fFlags & LOAD_LIBRARY_AS_DATAFILE_EXCLUSIVE)
+            || (fFlags & LOAD_LIBRARY_AS_IMAGE_RESOURCE))
+        && (hFile == NULL || hFile == INVALID_HANDLE_VALUE) )
+    { /* likely */ }
+    else
+    {
+        KWFS_TODO();
+        return LoadLibraryExA(pszFilename, hFile, fFlags);
+    }
+
+    /*
+     * Check if we've already got a dynload entry for this one.
+     */
+    for (pDynLoad = g_Sandbox.pTool->u.Sandboxed.pDynLoadHead; pDynLoad; pDynLoad = pDynLoad->pNext)
+        if (   pDynLoad->cchRequest == cchFilename
+            && kHlpMemComp(pDynLoad->szRequest, pszFilename, cchFilename) == 0)
+        {
+            if (pDynLoad->pMod)
+                rc = kwLdrModuleInitTree(pDynLoad->pMod);
+            else
+                rc = 0;
+            if (rc == 0)
+            {
+                KWLDR_LOG(("LoadLibraryExA(%s,,) -> %p [cached]\n", pszFilename, pDynLoad->hmod));
+                return pDynLoad->hmod;
+            }
+            SetLastError(ERROR_DLL_INIT_FAILED);
+            return NULL;
+        }
+
+    /*
+     * Allocate a dynload entry for the request.
+     */
+    pDynLoad = (PKWDYNLOAD)kHlpAlloc(sizeof(*pDynLoad) + cchFilename + 1);
+    if (pDynLoad)
+    {
+        pDynLoad->cchRequest = cchFilename;
+        kHlpMemCopy(pDynLoad->szRequest, pszFilename, cchFilename + 1);
+    }
+    else
+    {
+        KWLDR_LOG(("LoadLibraryExA: Out of memory!\n"));
+        SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+        return NULL;
+    }
+
+    /*
+     * Deal with resource / data DLLs.
+     */
+    if (fFlags & (  DONT_RESOLVE_DLL_REFERENCES
+                  | LOAD_LIBRARY_AS_DATAFILE
+                  | LOAD_LIBRARY_AS_DATAFILE_EXCLUSIVE
+                  | LOAD_LIBRARY_AS_IMAGE_RESOURCE) )
+        return kwSandbox_Kernel32_LoadLibraryExA_Resource(pDynLoad, fFlags);
+
+    /*
+     * Special case: api-ms-win-core-synch-l1-2-0 and friends (32-bit yasm, built with VS2015).
+     */
+    if (   kwLdrIsVirtualApiModule(pszFilename, cchFilename)
+        && kHlpIsFilenameOnly(pszFilename))
+        return kwSandbox_Kernel32_LoadLibraryExA_VirtualApiModule(pDynLoad, fFlags);
+
+    /*
+     * Normal library loading.
+     * We start by being very lazy and reusing the code for resolving imports.
+     */
+    pszSearchPath = kwSandboxDoGetEnvA(&g_Sandbox, "PATH", 4);
+    if (!kHlpIsFilenameOnly(pszFilename))
+        pMod = kwLdrModuleTryLoadDll(pszFilename, KWLOCATION_UNKNOWN, g_Sandbox.pTool->u.Sandboxed.pExe, pszSearchPath);
+#if 1 /* HACK ALERT! We run into trouble with a 2nd mspdb140.dll instance (x64 + x86), so use the one already loaded.   A call
+       * to NdrClientCall2 at ConnectToServer+0x426 fails with E_INVALIDARG.  Problems with multiple connections from same PID? */
+    else if (   strcmp(pszFilename, "mspdb140.dll") == 0
+             && GetModuleHandleA(pszFilename) != NULL)
+    {
+        pMod = kwLdrModuleForLoadedNativeByHandle(GetModuleHandleA(pszFilename), K_FALSE, pszFilename);
+        KWLDR_LOG(("LoadLibraryExA: mspdb140 hack: pMod=%p\n", pMod));
+    }
+#endif
+    else
+    {
+        rc = kwLdrModuleResolveAndLookup(pszFilename, g_Sandbox.pTool->u.Sandboxed.pExe, NULL /*pImporter*/, pszSearchPath, &pMod);
+        if (rc != 0)
+            pMod = NULL;
+    }
+    if (pMod && pMod != (PKWMODULE)~(KUPTR)0)
+    {
+        /* Enter it into the tool module table and dynamic link request cache. */
+        kwToolAddModuleAndImports(g_Sandbox.pTool, pMod);
+
+        pDynLoad->pMod = pMod;
+        pDynLoad->hmod = pMod->hOurMod;
+
+        pDynLoad->pNext = g_Sandbox.pTool->u.Sandboxed.pDynLoadHead;
+        g_Sandbox.pTool->u.Sandboxed.pDynLoadHead = pDynLoad;
+
+        /*
+         * Make sure it's initialized (need to link it first since DllMain may
+         * use loader APIs).
+         */
+        rc = kwLdrModuleInitTree(pMod);
+        if (rc == 0)
+        {
+            KWLDR_LOG(("LoadLibraryExA(%s,,) -> %p\n", pszFilename, pDynLoad->hmod));
+            return pDynLoad->hmod;
+        }
+
+        SetLastError(ERROR_DLL_INIT_FAILED);
+    }
+    else
+    {
+        KWFS_TODO();
+        kHlpFree(pDynLoad);
+        SetLastError(pMod ? ERROR_BAD_EXE_FORMAT : ERROR_MOD_NOT_FOUND);
+    }
+    return NULL;
+}
+
+
+/** Kernel32 - LoadLibraryExA() for native overloads */
+static HMODULE WINAPI kwSandbox_Kernel32_Native_LoadLibraryExA(LPCSTR pszFilename, HANDLE hFile, DWORD fFlags)
+{
+    char szPath[1024];
+    KWLDR_LOG(("kwSandbox_Kernel32_Native_LoadLibraryExA(%s, %p, %#x)\n", pszFilename, hFile, fFlags));
+
+    /*
+     * We may have to help resolved unqualified DLLs living in the executable directory.
+     */
+    if (   kHlpIsFilenameOnly(pszFilename)
+        && g_Sandbox.pTool
+        && g_Sandbox.pTool->u.Sandboxed.pExe)
+    {
+        KSIZE const cchFilename = kHlpStrLen(pszFilename);
+#define MY_IMATCH(a_szName)   (cchFilename == sizeof(a_szName) - 1 && kHlpStrICompAscii(pszFilename, a_szName) == 0)
+        if (   !kwLdrIsVirtualApiModule(pszFilename, cchFilename)
+            && !MY_IMATCH("ntdll")
+            && !MY_IMATCH("kernel32")
+            && !MY_IMATCH("ntdll.dll")
+            && !MY_IMATCH("kernelbase")
+            && !MY_IMATCH("kernel32.dll")
+            && !MY_IMATCH("kernelbase.dll")
+           )
+#undef  MY_IMATCH
+        {
+            KSIZE cchExePath = g_Sandbox.pTool->u.Sandboxed.pExe->offFilename;
+            if (cchExePath + cchFilename + 1 <= sizeof(szPath))
+            {
+                kHlpMemCopy(szPath, g_Sandbox.pTool->u.Sandboxed.pExe->pszPath, cchExePath);
+                kHlpMemCopy(&szPath[cchExePath], pszFilename, cchFilename + 1);
+                if (kwFsPathExists(szPath))
+                {
+                    KWLDR_LOG(("kwSandbox_Kernel32_Native_LoadLibraryExA: %s -> %s\n", pszFilename, szPath));
+                    pszFilename = szPath;
+                }
+            }
+
+            if (pszFilename != szPath)
+            {
+                KSIZE cchSuffix = 0;
+                KBOOL fNeedSuffix = K_FALSE;
+                const char *pszCur = kwSandboxDoGetEnvA(&g_Sandbox, "PATH", 4);
+                kHlpAssert(pszCur);
+                if (pszCur)
+                {
+                    while (*pszCur != '\0')
+                    {
+                        /* Find the end of the component */
+                        KSIZE cch = 0;
+                        while (pszCur[cch] != ';' && pszCur[cch] != '\0')
+                            cch++;
+
+                        if (   cch > 0 /* wrong, but whatever */
+                            && cch + 1 + cchFilename + cchSuffix < sizeof(szPath))
+                        {
+                            char *pszDst = kHlpMemPCopy(szPath, pszCur, cch);
+                            if (   szPath[cch - 1] != ':'
+                                && szPath[cch - 1] != '/'
+                                && szPath[cch - 1] != '\\')
+                                *pszDst++ = '\\';
+                            pszDst = kHlpMemPCopy(pszDst, pszFilename, cchFilename);
+                            if (fNeedSuffix)
+                                pszDst = kHlpMemPCopy(pszDst, ".dll", 4);
+                            *pszDst = '\0';
+
+                            if (kwFsPathExists(szPath))
+                            {
+                                KWLDR_LOG(("kwSandbox_Kernel32_Native_LoadLibraryExA: %s -> %s\n", pszFilename, szPath));
+                                pszFilename = szPath;
+                                break;
+                            }
+                        }
+
+                        /* Advance */
+                        pszCur += cch;
+                        while (*pszCur == ';')
+                            pszCur++;
+                    }
+                }
+            }
+        }
+    }
+
+    return LoadLibraryExA(pszFilename, hFile, fFlags);
+}
+
+
+/** Kernel32 - LoadLibraryExW() for native overloads */
+static HMODULE WINAPI kwSandbox_Kernel32_Native_LoadLibraryExW(LPCWSTR pwszFilename, HANDLE hFile, DWORD fFlags)
+{
+    char szTmp[4096];
+    KSIZE cchTmp = kwUtf16ToStr(pwszFilename, szTmp, sizeof(szTmp));
+    if (cchTmp < sizeof(szTmp))
+        return kwSandbox_Kernel32_Native_LoadLibraryExA(szTmp, hFile, fFlags);
+
+    KWFS_TODO();
+    SetLastError(ERROR_FILENAME_EXCED_RANGE);
+    return NULL;
+}
+
+
+/** Kernel32 - LoadLibraryExW()   */
+static HMODULE WINAPI kwSandbox_Kernel32_LoadLibraryExW(LPCWSTR pwszFilename, HANDLE hFile, DWORD fFlags)
+{
+    char szTmp[4096];
+    KSIZE cchTmp = kwUtf16ToStr(pwszFilename, szTmp, sizeof(szTmp));
+    if (cchTmp < sizeof(szTmp))
+        return kwSandbox_Kernel32_LoadLibraryExA(szTmp, hFile, fFlags);
+
+    KWFS_TODO();
+    SetLastError(ERROR_FILENAME_EXCED_RANGE);
+    return NULL;
+}
+
+/** Kernel32 - LoadLibraryA()   */
+static HMODULE WINAPI kwSandbox_Kernel32_LoadLibraryA(LPCSTR pszFilename)
+{
+    return kwSandbox_Kernel32_LoadLibraryExA(pszFilename, NULL /*hFile*/, 0 /*fFlags*/);
+}
+
+
+/** Kernel32 - LoadLibraryW()   */
+static HMODULE WINAPI kwSandbox_Kernel32_LoadLibraryW(LPCWSTR pwszFilename)
+{
+    char szTmp[4096];
+    KSIZE cchTmp = kwUtf16ToStr(pwszFilename, szTmp, sizeof(szTmp));
+    if (cchTmp < sizeof(szTmp))
+        return kwSandbox_Kernel32_LoadLibraryExA(szTmp, NULL /*hFile*/, 0 /*fFlags*/);
+    KWFS_TODO();
+    SetLastError(ERROR_FILENAME_EXCED_RANGE);
+    return NULL;
+}
+
+
+/** Kernel32 - FreeLibrary()   */
+static BOOL WINAPI kwSandbox_Kernel32_FreeLibrary(HMODULE hmod)
+{
+    /* Ignored, we like to keep everything loaded. */
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    return TRUE;
+}
+
+
+/** Worker for GetModuleHandleA/W for handling cached modules. */
+static HMODULE kwSandbox_Kernel32_GetModuleHandle_ReturnedCachedEntry(KSIZE i)
+{
+    HMODULE hmod = g_aGetModuleHandleCache[i].hmod;
+    if (hmod)
+        KWLDR_LOG(("kwSandbox_Kernel32_GetModuleHandle_ReturnedCachedEntry(%u/%s -> %p [cached]\n",
+                   hmod, g_aGetModuleHandleCache[i].pszName));
+    else
+    {
+        /*
+         * The first time around we have to make sure we have a module table
+         * entry for it, if not we add one.  We need to add it to the tools
+         * module list to for it to work.
+         */
+        PKWMODULE pMod = kwLdrModuleForLoadedNative(g_aGetModuleHandleCache[i].pszName, K_FALSE,
+                                                    g_aGetModuleHandleCache[i].fAlwaysPresent);
+        if (pMod)
+        {
+            hmod = pMod->hOurMod;
+            if (!kwToolLocateModuleByHandle(g_Sandbox.pTool, hmod))
+            {
+                kwToolAddModule(g_Sandbox.pTool, pMod);
+                KWLDR_LOG(("kwSandbox_Kernel32_GetModuleHandle_ReturnedCachedEntry(%u/%s -> %p [added to tool]\n",
+                           hmod, g_aGetModuleHandleCache[i].pszName));
+            }
+            else
+                KWLDR_LOG(("kwSandbox_Kernel32_GetModuleHandle_ReturnedCachedEntry(%u/%s -> %p [known to tool]\n",
+                           hmod, g_aGetModuleHandleCache[i].pszName));
+
+        }
+    }
+    return hmod;
+}
+
+
+/** Kernel32 - GetModuleHandleA()   */
+static HMODULE WINAPI kwSandbox_Kernel32_GetModuleHandleA(LPCSTR pszModule)
+{
+    KSIZE i;
+    KSIZE cchModule;
+    PKWDYNLOAD pDynLoad;
+    KSIZE cchSuffix;
+    DWORD dwErr = ERROR_MOD_NOT_FOUND;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    /*
+     * The executable.
+     */
+    if (pszModule == NULL)
+    {
+        KWLDR_LOG(("kwSandbox_Kernel32_GetModuleHandleA(NULL) -> %p (exe)\n", g_Sandbox.pTool->u.Sandboxed.pExe->hOurMod));
+        return (HMODULE)g_Sandbox.pTool->u.Sandboxed.pExe->hOurMod;
+    }
+
+    /*
+     * If no path of suffix, pretend it ends with .DLL.
+     */
+    cchSuffix = strpbrk(pszModule, ":/\\.") ? 0 : 4;
+
+    /*
+     * Cache of system modules we've seen queried.
+     */
+    cchModule = kHlpStrLen(pszModule);
+    for (i = 0; i < K_ELEMENTS(g_aGetModuleHandleCache); i++)
+        if (    (   g_aGetModuleHandleCache[i].cchName == cchModule
+                 && stricmp(pszModule, g_aGetModuleHandleCache[i].pszName) == 0)
+            ||  (   cchSuffix > 0
+                 && g_aGetModuleHandleCache[i].cchName == cchModule + cchSuffix
+                 && strnicmp(pszModule, g_aGetModuleHandleCache[i].pszName, cchModule)
+                 && stricmp(&g_aGetModuleHandleCache[i].pszName[cchModule], ".dll") == 0))
+            return kwSandbox_Kernel32_GetModuleHandle_ReturnedCachedEntry(i);
+
+    /*
+     * Modules we've dynamically loaded.
+     */
+    for (pDynLoad = g_Sandbox.pTool->u.Sandboxed.pDynLoadHead; pDynLoad; pDynLoad = pDynLoad->pNext)
+        if (pDynLoad->pMod)
+        {
+            const char *pszPath = pDynLoad->pMod->pszPath;
+            const char *pszName = &pszPath[pDynLoad->pMod->offFilename];
+            if (   stricmp(pszPath, pszModule) == 0
+                || stricmp(pszName, pszModule) == 0
+                || (   cchSuffix > 0
+                    && strnicmp(pszName, pszModule, cchModule) == 0
+                    && stricmp(&pszName[cchModule], ".dll") == 0))
+            {
+                if (   pDynLoad->pMod->fNative
+                    || pDynLoad->pMod->u.Manual.enmState == KWMODSTATE_READY)
+                {
+                    KWLDR_LOG(("kwSandbox_Kernel32_GetModuleHandleA(%s,,) -> %p [dynload]\n", pszModule, pDynLoad->hmod));
+                    return pDynLoad->hmod;
+                }
+                KWLDR_LOG(("kwSandbox_Kernel32_GetModuleHandleA(%s) -> NULL (not read)\n", pszModule));
+                SetLastError(ERROR_MOD_NOT_FOUND);
+                return NULL;
+            }
+        }
+
+    /*
+     * Hack for the api-ms-win-xxxxx.dll modules.  Find which module they map
+     * to and go via the g_aGetModuleHandleCache cache.
+     */
+/** @todo virtual api DLLs */
+    if (kHlpStrNICompAscii(pszModule, "api-ms-win-", 11) == 0)
+    {
+        HMODULE hmod = GetModuleHandleA(pszModule);
+        KWLDR_LOG(("kwSandbox_Kernel32_GetModuleHandleA(%s); hmod=%p\n", pszModule, hmod));
+        if (hmod)
+        {
+            if (hmod == GetModuleHandleW(L"KERNELBASE.DLL"))
+                return kwSandbox_Kernel32_GetModuleHandleA("KERNELBASE.DLL");
+            if (hmod == GetModuleHandleW(L"KERNEL32.DLL"))
+                return kwSandbox_Kernel32_GetModuleHandleA("KERNEL32.DLL");
+            if (hmod == GetModuleHandleW(L"NTDLL.DLL"))
+                return kwSandbox_Kernel32_GetModuleHandleA("NTDLL.DLL");
+            if (hmod == GetModuleHandleW(L"UCRTBASE.DLL"))
+                return kwSandbox_Kernel32_GetModuleHandleA("UCRTBASE.DLL");
+        }
+        else
+            dwErr = GetLastError();
+    }
+
+    kwErrPrintf("pszModule=%s\n", pszModule);
+    KWFS_TODO();
+    SetLastError(ERROR_MOD_NOT_FOUND);
+    return NULL;
+}
+
+
+/** Kernel32 - GetModuleHandleW()   */
+static HMODULE WINAPI kwSandbox_Kernel32_GetModuleHandleW(LPCWSTR pwszModule)
+{
+    KSIZE i;
+    KSIZE cwcModule;
+    PKWDYNLOAD pDynLoad;
+    KSIZE cwcSuffix;
+    DWORD dwErr = ERROR_MOD_NOT_FOUND;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    /*
+     * The executable.
+     */
+    if (pwszModule == NULL)
+    {
+        KWLDR_LOG(("kwSandbox_Kernel32_GetModuleHandleW(NULL) -> %p (exe)\n", g_Sandbox.pTool->u.Sandboxed.pExe->hOurMod));
+        return (HMODULE)g_Sandbox.pTool->u.Sandboxed.pExe->hOurMod;
+    }
+
+    /*
+     * If no path of suffix, pretend it ends with .DLL.
+     */
+    cwcSuffix = wcspbrk(pwszModule, L":/\\.") ? 0 : 4;
+
+    /*
+     * Cache of system modules we've seen queried.
+     */
+    cwcModule = kwUtf16Len(pwszModule);
+    for (i = 0; i < K_ELEMENTS(g_aGetModuleHandleCache); i++)
+        if (   (   g_aGetModuleHandleCache[i].cwcName == cwcModule
+                && _wcsicmp(pwszModule, g_aGetModuleHandleCache[i].pwszName) == 0)
+            || (   cwcSuffix > 0
+                && g_aGetModuleHandleCache[i].cwcName == cwcModule + cwcSuffix
+                && _wcsnicmp(pwszModule, g_aGetModuleHandleCache[i].pwszName, cwcModule) == 0
+                && _wcsicmp(&g_aGetModuleHandleCache[i].pwszName[cwcModule], L".dll") == 0))
+            return kwSandbox_Kernel32_GetModuleHandle_ReturnedCachedEntry(i);
+
+    /*
+     * Modules we've dynamically loaded.
+     */
+    for (pDynLoad = g_Sandbox.pTool->u.Sandboxed.pDynLoadHead; pDynLoad; pDynLoad = pDynLoad->pNext)
+        if (pDynLoad->pMod)
+        {
+            const wchar_t *pwszPath = pDynLoad->pMod->pwszPath;
+            const wchar_t *pwszName = &pwszPath[pDynLoad->pMod->offFilenameW];
+            if (   _wcsicmp(pwszPath, pwszModule) == 0
+                || _wcsicmp(pwszName, pwszModule) == 0
+                || (   cwcSuffix
+                    && _wcsnicmp(pwszName, pwszModule, cwcModule) == 0
+                    && _wcsicmp(&pwszName[cwcModule], L".dll") == 0))
+            {
+                if (   pDynLoad->pMod->fNative
+                    || pDynLoad->pMod->u.Manual.enmState == KWMODSTATE_READY)
+                {
+                    KWLDR_LOG(("kwSandbox_Kernel32_GetModuleHandleW(%ls,,) -> %p [dynload]\n", pwszModule, pDynLoad->hmod));
+                    return pDynLoad->hmod;
+                }
+                KWLDR_LOG(("kwSandbox_Kernel32_GetModuleHandleW(%ls) -> NULL (not read)\n", pwszModule));
+                SetLastError(ERROR_MOD_NOT_FOUND);
+                return NULL;
+            }
+        }
+
+    /*
+     * Hack for the api-ms-win-xxxxx.dll modules.  Find which module they map
+     * to and go via the g_aGetModuleHandleCache cache.
+     */
+    if (_wcsnicmp(pwszModule, L"api-ms-win-", 11) == 0)
+    {
+        HMODULE hmod = GetModuleHandleW(pwszModule);
+        KWLDR_LOG(("kwSandbox_Kernel32_GetModuleHandleW(%ls); hmod=%p\n", pwszModule, hmod));
+        if (hmod)
+        {
+            if (hmod == GetModuleHandleW(L"KERNELBASE.DLL"))
+                return kwSandbox_Kernel32_GetModuleHandleW(L"KERNELBASE.DLL");
+            if (hmod == GetModuleHandleW(L"KERNEL32.DLL"))
+                return kwSandbox_Kernel32_GetModuleHandleW(L"KERNEL32.DLL");
+            if (hmod == GetModuleHandleW(L"NTDLL.DLL"))
+                return kwSandbox_Kernel32_GetModuleHandleW(L"NTDLL.DLL");
+        }
+        else
+            dwErr = GetLastError();
+    }
+
+    kwErrPrintf("pwszModule=%ls\n", pwszModule);
+    KWFS_TODO();
+    SetLastError(dwErr);
+    return NULL;
+}
+
+
+/** Used to debug dynamically resolved procedures. */
+static UINT WINAPI kwSandbox_BreakIntoDebugger(void *pv1, void *pv2, void *pv3, void *pv4)
+{
+#ifdef _MSC_VER
+    __debugbreak();
+#else
+    KWFS_TODO();
+#endif
+    return ~(UINT)0;
+}
+
+
+#ifndef NDEBUG
+/*
+ * This wraps up to three InvokeCompilerPassW functions and dumps their arguments to the log.
+ */
+# if K_ARCH == K_ARCH_X86_32
+static char g_szInvokeCompilePassW[] = "_InvokeCompilerPassW@16";
+# else
+static char g_szInvokeCompilePassW[] = "InvokeCompilerPassW";
+# endif
+typedef KIPTR __stdcall FNINVOKECOMPILERPASSW(int cArgs, wchar_t **papwszArgs, KUPTR fFlags, void **phCluiInstance);
+typedef FNINVOKECOMPILERPASSW *PFNINVOKECOMPILERPASSW;
+typedef struct KWCXINTERCEPTORENTRY
+{
+    PFNINVOKECOMPILERPASSW  pfnOrg;
+    PKWMODULE               pModule;
+    PFNINVOKECOMPILERPASSW  pfnWrap;
+} KWCXINTERCEPTORENTRY;
+
+static KIPTR kwSandbox_Cx_InvokeCompilerPassW_Common(int cArgs, wchar_t **papwszArgs, KUPTR fFlags, void **phCluiInstance,
+                                                     KWCXINTERCEPTORENTRY *pEntry)
+{
+    int i;
+    KIPTR rcExit;
+    KW_LOG(("%s!InvokeCompilerPassW(%d, %p, %#x, %p)\n",
+            &pEntry->pModule->pszPath[pEntry->pModule->offFilename], cArgs, papwszArgs, fFlags, phCluiInstance));
+    for (i = 0; i < cArgs; i++)
+        KW_LOG((" papwszArgs[%u]='%ls'\n", i, papwszArgs[i]));
+
+    rcExit = pEntry->pfnOrg(cArgs, papwszArgs, fFlags, phCluiInstance);
+
+    KW_LOG(("%s!InvokeCompilerPassW returns %d\n", &pEntry->pModule->pszPath[pEntry->pModule->offFilename], rcExit));
+    return rcExit;
+}
+
+static FNINVOKECOMPILERPASSW kwSandbox_Cx_InvokeCompilerPassW_0;
+static FNINVOKECOMPILERPASSW kwSandbox_Cx_InvokeCompilerPassW_1;
+static FNINVOKECOMPILERPASSW kwSandbox_Cx_InvokeCompilerPassW_2;
+
+static KWCXINTERCEPTORENTRY g_aCxInterceptorEntries[] =
+{
+    { NULL, NULL, kwSandbox_Cx_InvokeCompilerPassW_0 },
+    { NULL, NULL, kwSandbox_Cx_InvokeCompilerPassW_1 },
+    { NULL, NULL, kwSandbox_Cx_InvokeCompilerPassW_2 },
+};
+
+static KIPTR __stdcall kwSandbox_Cx_InvokeCompilerPassW_0(int cArgs, wchar_t **papwszArgs, KUPTR fFlags, void **phCluiInstance)
+{
+    return kwSandbox_Cx_InvokeCompilerPassW_Common(cArgs, papwszArgs, fFlags, phCluiInstance, &g_aCxInterceptorEntries[0]);
+}
+
+static KIPTR __stdcall kwSandbox_Cx_InvokeCompilerPassW_1(int cArgs, wchar_t **papwszArgs, KUPTR fFlags, void **phCluiInstance)
+{
+    return kwSandbox_Cx_InvokeCompilerPassW_Common(cArgs, papwszArgs, fFlags, phCluiInstance, &g_aCxInterceptorEntries[1]);
+}
+
+static KIPTR __stdcall kwSandbox_Cx_InvokeCompilerPassW_2(int cArgs, wchar_t **papwszArgs, KUPTR fFlags, void **phCluiInstance)
+{
+    return kwSandbox_Cx_InvokeCompilerPassW_Common(cArgs, papwszArgs, fFlags, phCluiInstance, &g_aCxInterceptorEntries[2]);
+}
+
+#endif /* !NDEBUG */
+
+
+/** Kernel32 - GetProcAddress()   */
+static FARPROC WINAPI kwSandbox_Kernel32_GetProcAddress(HMODULE hmod, LPCSTR pszProc)
+{
+    KSIZE i;
+    PKWMODULE pMod;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    /*
+     * Try locate the module.
+     */
+    pMod = kwToolLocateModuleByHandle(g_Sandbox.pTool, hmod);
+    if (pMod)
+    {
+        KLDRADDR uValue;
+        int rc = kLdrModQuerySymbol(pMod->pLdrMod,
+                                    pMod->fNative ? NULL : pMod->u.Manual.pvBits,
+                                    pMod->fNative ? KLDRMOD_BASEADDRESS_MAP : (KUPTR)pMod->u.Manual.pbLoad,
+                                    KU32_MAX /*iSymbol*/,
+                                    pszProc,
+                                    kHlpStrLen(pszProc),
+                                    NULL /*pszVersion*/,
+                                    NULL /*pfnGetForwarder*/, NULL /*pvUser*/,
+                                    &uValue,
+                                    NULL /*pfKind*/);
+        if (rc == 0)
+        {
+            //static int s_cDbgGets = 0;
+            KU32 cchProc = (KU32)kHlpStrLen(pszProc);
+            KU32 i = g_cSandboxGetProcReplacements;
+            while (i-- > 0)
+                if (   g_aSandboxGetProcReplacements[i].cchFunction == cchProc
+                    && kHlpMemComp(g_aSandboxGetProcReplacements[i].pszFunction, pszProc, cchProc) == 0)
+                {
+                    if (   !g_aSandboxGetProcReplacements[i].pszModule
+                        || kHlpStrICompAscii(g_aSandboxGetProcReplacements[i].pszModule, &pMod->pszPath[pMod->offFilename]) == 0)
+                    {
+                        if (   !g_aSandboxGetProcReplacements[i].fOnlyExe
+                            || (KUPTR)_ReturnAddress() - (KUPTR)g_Sandbox.pTool->u.Sandboxed.pExe->hOurMod
+                               < g_Sandbox.pTool->u.Sandboxed.pExe->cbImage)
+                        {
+                            if (!g_aSandboxReplacements[i].fCrtSlotArray)
+                                uValue = g_aSandboxGetProcReplacements[i].pfnReplacement;
+                            else
+                            {
+                                if (pMod->iCrtSlot == KU8_MAX)
+                                {
+                                    int rc = kwLdrModuleCreateCrtSlot(pMod);
+                                    if (rc)
+                                    {
+                                        KW_LOG(("GetProcAddress: kwLdrModuleCreateCrtSlot failed: %d\n", rc));
+                                        SetLastError(ERROR_INTERNAL_ERROR);
+                                        return NULL;
+                                    }
+                                }
+                                uValue = ((KUPTR *)g_aSandboxGetProcReplacements[i].pfnReplacement)[pMod->iCrtSlot];
+                            }
+
+                            KW_LOG(("GetProcAddress(%s, %s) -> %p replaced\n", pMod->pszPath, pszProc, (KUPTR)uValue));
+                        }
+                        kwLdrModuleRelease(pMod);
+                        return (FARPROC)(KUPTR)uValue;
+                    }
+                }
+
+#ifndef NDEBUG
+            /* Intercept the compiler pass method, dumping arguments. */
+            if (kHlpStrComp(pszProc, g_szInvokeCompilePassW) == 0)
+            {
+                KU32 i;
+                for (i = 0; i < K_ELEMENTS(g_aCxInterceptorEntries); i++)
+                    if ((KUPTR)g_aCxInterceptorEntries[i].pfnOrg == uValue)
+                    {
+                        uValue = (KUPTR)g_aCxInterceptorEntries[i].pfnWrap;
+                        KW_LOG(("GetProcAddress: intercepting InvokeCompilerPassW\n"));
+                        break;
+                    }
+                if (i >= K_ELEMENTS(g_aCxInterceptorEntries))
+                    while (i-- > 0)
+                        if (g_aCxInterceptorEntries[i].pfnOrg == NULL)
+                        {
+                            g_aCxInterceptorEntries[i].pfnOrg  = (PFNINVOKECOMPILERPASSW)(KUPTR)uValue;
+                            g_aCxInterceptorEntries[i].pModule = pMod;
+                            uValue = (KUPTR)g_aCxInterceptorEntries[i].pfnWrap;
+                            KW_LOG(("GetProcAddress: intercepting InvokeCompilerPassW (new)\n"));
+                            break;
+                        }
+            }
+#endif
+            KW_LOG(("GetProcAddress(%s, %s) -> %p\n", pMod->pszPath, pszProc, (KUPTR)uValue));
+            kwLdrModuleRelease(pMod);
+            //s_cDbgGets++;
+            //if (s_cGets >= 3)
+            //    return (FARPROC)kwSandbox_BreakIntoDebugger;
+            return (FARPROC)(KUPTR)uValue;
+        }
+
+        KWFS_TODO();
+        SetLastError(ERROR_PROC_NOT_FOUND);
+        kwLdrModuleRelease(pMod);
+        return NULL;
+    }
+
+    /*
+     * Hmm... could be a cached module-by-name.
+     */
+    for (i = 0; i < K_ELEMENTS(g_aGetModuleHandleCache); i++)
+        if (g_aGetModuleHandleCache[i].hmod == hmod)
+            return GetProcAddress(hmod, pszProc);
+
+    KWFS_TODO();
+    return GetProcAddress(hmod, pszProc);
+}
+
+
+#ifndef NDEBUG
+/** Kernel32 - GetProcAddress() - native replacement for debugging only.  */
+static FARPROC WINAPI kwSandbox_Kernel32_Native_GetProcAddress(HMODULE hmod, LPCSTR pszProc)
+{
+    FARPROC pfnRet = GetProcAddress(hmod, pszProc);
+    KWLDR_LOG(("kwSandbox_Kernel32_Native_GetProcAddress(%p, %s) -> %p\n", hmod, pszProc, pfnRet));
+    return pfnRet;
+}
+#endif
+
+
+/** Kernel32 - GetModuleFileNameA()   */
+static DWORD WINAPI kwSandbox_Kernel32_GetModuleFileNameA(HMODULE hmod, LPSTR pszFilename, DWORD cbFilename)
+{
+    PKWMODULE pMod;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    pMod = kwToolLocateModuleByHandle(g_Sandbox.pTool, hmod);
+    if (pMod != NULL)
+    {
+        DWORD cbRet = kwStrCopyStyle1(pMod->pszPath, pszFilename, cbFilename);
+        kwLdrModuleRelease(pMod);
+        return cbRet;
+    }
+    KWFS_TODO();
+    return 0;
+}
+
+
+/** Kernel32 - GetModuleFileNameW()   */
+static DWORD WINAPI kwSandbox_Kernel32_GetModuleFileNameW(HMODULE hmod, LPWSTR pwszFilename, DWORD cbFilename)
+{
+    PKWMODULE pMod;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    pMod = kwToolLocateModuleByHandle(g_Sandbox.pTool, hmod);
+    if (pMod)
+    {
+        DWORD cwcRet = kwUtf16CopyStyle1(pMod->pwszPath, pwszFilename, cbFilename);
+        kwLdrModuleRelease(pMod);
+        return cwcRet;
+    }
+
+    KWFS_TODO();
+    return 0;
+}
+
+
+/** NtDll - RtlPcToFileHeader
+ * This is necessary for msvcr100.dll!CxxThrowException.  */
+static PVOID WINAPI kwSandbox_ntdll_RtlPcToFileHeader(PVOID pvPC, PVOID *ppvImageBase)
+{
+    PVOID pvRet;
+
+    /*
+     * Do a binary lookup of the module table for the current tool.
+     * This will give us a
+     */
+    if (g_Sandbox.fRunning)
+    {
+        KUPTR const     uPC     = (KUPTR)pvPC;
+        PKWMODULE      *papMods = g_Sandbox.pTool->u.Sandboxed.papModules;
+        KU32            iEnd    = g_Sandbox.pTool->u.Sandboxed.cModules;
+        KU32            i;
+        if (iEnd)
+        {
+            KU32        iStart  = 0;
+            i = iEnd / 2;
+            for (;;)
+            {
+                KUPTR const uHModCur = (KUPTR)papMods[i]->hOurMod;
+                if (uPC < uHModCur)
+                {
+                    iEnd = i;
+                    if (iStart < i)
+                    { }
+                    else
+                        break;
+                }
+                else if (uPC != uHModCur)
+                {
+                    iStart = ++i;
+                    if (i < iEnd)
+                    { }
+                    else
+                        break;
+                }
+                else
+                {
+                    /* This isn't supposed to happen. */
+                    break;
+                }
+
+                i = iStart + (iEnd - iStart) / 2;
+            }
+
+            /* For reasons of simplicity (= copy & paste), we end up with the
+               module after the one we're interested in here.  */
+            i--;
+            if (i < g_Sandbox.pTool->u.Sandboxed.cModules
+                && papMods[i]->pLdrMod)
+            {
+                KSIZE uRvaPC = uPC - (KUPTR)papMods[i]->hOurMod;
+                if (uRvaPC < papMods[i]->cbImage)
+                {
+                    *ppvImageBase = papMods[i]->hOurMod;
+                    pvRet = papMods[i]->hOurMod;
+                    KW_LOG(("RtlPcToFileHeader(PC=%p) -> %p, *ppvImageBase=%p [our]\n", pvPC, pvRet, *ppvImageBase));
+                    return pvRet;
+                }
+            }
+        }
+        else
+            i = 0;
+    }
+
+    /*
+     * Call the regular API.
+     */
+    pvRet = RtlPcToFileHeader(pvPC, ppvImageBase);
+    KW_LOG(("RtlPcToFileHeader(PC=%p) -> %p, *ppvImageBase=%p \n", pvPC, pvRet, *ppvImageBase));
+    return pvRet;
+}
+
+
+/*
+ *
+ * File access APIs (for speeding them up).
+ * File access APIs (for speeding them up).
+ * File access APIs (for speeding them up).
+ *
+ */
+
+
+/**
+ * Converts a lookup error to a windows error code.
+ *
+ * @returns The windows error code.
+ * @param   enmError            The lookup error.
+ */
+static DWORD kwFsLookupErrorToWindowsError(KFSLOOKUPERROR enmError)
+{
+    switch (enmError)
+    {
+        case KFSLOOKUPERROR_NOT_FOUND:
+        case KFSLOOKUPERROR_NOT_DIR:
+            return ERROR_FILE_NOT_FOUND;
+
+        case KFSLOOKUPERROR_PATH_COMP_NOT_FOUND:
+        case KFSLOOKUPERROR_PATH_COMP_NOT_DIR:
+        case KFSLOOKUPERROR_PATH_TOO_SHORT:
+            return ERROR_PATH_NOT_FOUND;
+
+        case KFSLOOKUPERROR_PATH_TOO_LONG:
+            return ERROR_FILENAME_EXCED_RANGE;
+
+        case KFSLOOKUPERROR_OUT_OF_MEMORY:
+            return ERROR_NOT_ENOUGH_MEMORY;
+
+        default:
+            return ERROR_PATH_NOT_FOUND;
+    }
+}
+
+#ifdef WITH_TEMP_MEMORY_FILES
+
+/**
+ * Checks for a cl.exe temporary file.
+ *
+ * There are quite a bunch of these.  They seems to be passing data between the
+ * first and second compiler pass.  Since they're on disk, they get subjected to
+ * AV software screening and normal file consistency rules.  So, not necessarily
+ * a very efficient way of handling reasonably small amounts of data.
+ *
+ * We make the files live in virtual memory by intercepting their  opening,
+ * writing, reading, closing , mapping, unmapping, and maybe some more stuff.
+ *
+ * @returns K_TRUE / K_FALSE
+ * @param   pwszFilename    The file name being accessed.
+ */
+static KBOOL kwFsIsClTempFileW(const wchar_t *pwszFilename)
+{
+    wchar_t const *pwszName = kwPathGetFilenameW(pwszFilename);
+    if (pwszName)
+    {
+        /* The name starts with _CL_... */
+        if (   pwszName[0] == '_'
+            && pwszName[1] == 'C'
+            && pwszName[2] == 'L'
+            && pwszName[3] == '_' )
+        {
+            /* ... followed by 8 xdigits and ends with a two letter file type.  Simplify
+               this check by just checking that it's alpha numerical ascii from here on. */
+            wchar_t wc;
+            pwszName += 4;
+            while ((wc = *pwszName++) != '\0')
+            {
+                if (wc < 127 && iswalnum(wc))
+                { /* likely */ }
+                else
+                    return K_FALSE;
+            }
+            return K_TRUE;
+        }
+
+        /* In VC2019 there is also one {UUID} file in temp: */
+        if (pwszName[0] == '{')
+        {
+            KSIZE cwcName = kwUtf16Len(pwszName);
+            if (   cwcName == sizeof("{4465DDD9-E494-471B-996B-9B556E25AEF8}") - 1
+                && pwszName[37] == '}'
+                && iswalnum(pwszName[1])   // 4
+                && iswalnum(pwszName[2])   // 4
+                && iswalnum(pwszName[3])   // 6
+                && iswalnum(pwszName[4])   // 5
+                && iswalnum(pwszName[5])   // d
+                && iswalnum(pwszName[6])   // d
+                && iswalnum(pwszName[7])   // d
+                && iswalnum(pwszName[8])   // 9
+                && pwszName[9] == '-'      // -
+                && iswalnum(pwszName[10])  // e
+                && iswalnum(pwszName[11])  // 4
+                && iswalnum(pwszName[12])  // 9
+                && iswalnum(pwszName[13])  // 4
+                && pwszName[14] == '-'     // -
+                && iswalnum(pwszName[15])  // 4
+                && iswalnum(pwszName[16])  // 7
+                && iswalnum(pwszName[17])  // 1
+                && iswalnum(pwszName[18])  // b
+                && pwszName[19] == '-'     // -
+                && iswalnum(pwszName[20])  // 9
+                && iswalnum(pwszName[21])  // 9
+                && iswalnum(pwszName[22])  // 6
+                && iswalnum(pwszName[23])  // b
+                && pwszName[24] == '-'     // -
+                && iswalnum(pwszName[25])  // 9
+                && iswalnum(pwszName[26])  // b
+                && iswalnum(pwszName[27])  // 5
+                && iswalnum(pwszName[28])  // 5
+                && iswalnum(pwszName[29])  // 6
+                && iswalnum(pwszName[30])  // e
+                && iswalnum(pwszName[31])  // 2
+                && iswalnum(pwszName[32])  // 5
+                && iswalnum(pwszName[33])  // a
+                && iswalnum(pwszName[34])  // 3
+                && iswalnum(pwszName[35])  // f
+                && iswalnum(pwszName[36])) // 8
+                return K_TRUE;
+        }
+    }
+    return K_FALSE;
+}
+
+
+/**
+ * Creates a handle to a temporary file.
+ *
+ * @returns The handle on success.
+ *          INVALID_HANDLE_VALUE and SetLastError on failure.
+ * @param   pTempFile           The temporary file.
+ * @param   dwDesiredAccess     The desired access to the handle.
+ * @param   fMapping            Whether this is a mapping (K_TRUE) or file
+ *                              (K_FALSE) handle type.
+ */
+static HANDLE kwFsTempFileCreateHandle(PKWFSTEMPFILE pTempFile, DWORD dwDesiredAccess, KBOOL fMapping)
+{
+    /*
+     * Create a handle to the temporary file.
+     */
+    HANDLE hFile = INVALID_HANDLE_VALUE;
+    HANDLE hProcSelf = GetCurrentProcess();
+    if (DuplicateHandle(hProcSelf, hProcSelf,
+                        hProcSelf, &hFile,
+                        SYNCHRONIZE, FALSE,
+                        0 /*dwOptions*/))
+    {
+        PKWHANDLE pHandle = (PKWHANDLE)kHlpAlloc(sizeof(*pHandle));
+        if (pHandle)
+        {
+            pHandle->enmType            = !fMapping ? KWHANDLETYPE_TEMP_FILE : KWHANDLETYPE_TEMP_FILE_MAPPING;
+            pHandle->cRefs              = 1;
+            pHandle->offFile            = 0;
+            pHandle->hHandle            = hFile;
+            pHandle->dwDesiredAccess    = dwDesiredAccess;
+            pHandle->tidOwner           = KU32_MAX;
+            pHandle->u.pTempFile        = pTempFile;
+            if (kwSandboxHandleTableEnter(&g_Sandbox, pHandle, hFile))
+            {
+                pTempFile->cActiveHandles++;
+                kHlpAssert(pTempFile->cActiveHandles >= 1);
+                kHlpAssert(pTempFile->cActiveHandles <= 2);
+                KWFS_LOG(("kwFsTempFileCreateHandle: Temporary file '%ls' -> %p\n", pTempFile->pwszPath, hFile));
+                return hFile;
+            }
+
+            kHlpFree(pHandle);
+        }
+        else
+            KWFS_LOG(("kwFsTempFileCreateHandle: Out of memory!\n"));
+        SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+    }
+    else
+        KWFS_LOG(("kwFsTempFileCreateHandle: DuplicateHandle failed: err=%u\n", GetLastError()));
+    return INVALID_HANDLE_VALUE;
+}
+
+
+static HANDLE kwFsTempFileCreateW(const wchar_t *pwszFilename, DWORD dwDesiredAccess, DWORD dwCreationDisposition,
+                                  KBOOL *pfFallback)
+{
+    HANDLE hFile;
+    DWORD  dwErr;
+
+    /*
+     * Check if we've got an existing temp file.
+     * ASSUME exact same path for now.
+     */
+    KSIZE const   cwcFilename = kwUtf16Len(pwszFilename);
+    PKWFSTEMPFILE pTempFile;
+    for (pTempFile = g_Sandbox.pTempFileHead; pTempFile != NULL; pTempFile = pTempFile->pNext)
+    {
+        /* Since the last two chars are usually the only difference, we check them manually before calling memcmp. */
+        if (   pTempFile->cwcPath == cwcFilename
+            && pTempFile->pwszPath[cwcFilename - 1] == pwszFilename[cwcFilename - 1]
+            && pTempFile->pwszPath[cwcFilename - 2] == pwszFilename[cwcFilename - 2]
+            && kHlpMemComp(pTempFile->pwszPath, pwszFilename, cwcFilename) == 0)
+            break;
+    }
+
+    /*
+     * Create a new temporary file instance if not found.
+     */
+    *pfFallback = K_FALSE;
+    if (pTempFile == NULL)
+    {
+        KSIZE cbFilename;
+
+        switch (dwCreationDisposition)
+        {
+            case CREATE_ALWAYS:
+            case OPEN_ALWAYS:
+            case CREATE_NEW:
+                dwErr = NO_ERROR;
+                break;
+
+            case OPEN_EXISTING:
+            case TRUNCATE_EXISTING:
+                *pfFallback = K_TRUE;
+                kHlpAssertFailed();
+                SetLastError(ERROR_FILE_NOT_FOUND);
+                return INVALID_HANDLE_VALUE;
+
+            default:
+                kHlpAssertFailed();
+                SetLastError(ERROR_INVALID_PARAMETER);
+                return INVALID_HANDLE_VALUE;
+        }
+
+        cbFilename = (cwcFilename + 1) * sizeof(wchar_t);
+        pTempFile = (PKWFSTEMPFILE)kHlpAlloc(sizeof(*pTempFile) + cbFilename);
+        if (pTempFile)
+        {
+            pTempFile->cwcPath          = (KU16)cwcFilename;
+            pTempFile->cbFile           = 0;
+            pTempFile->cbFileAllocated  = 0;
+            pTempFile->cActiveHandles   = 0;
+            pTempFile->cMappings        = 0;
+            pTempFile->cSegs            = 0;
+            pTempFile->paSegs           = NULL;
+            pTempFile->pwszPath         = (wchar_t const *)kHlpMemCopy(pTempFile + 1, pwszFilename, cbFilename);
+
+            pTempFile->pNext = g_Sandbox.pTempFileHead;
+            g_Sandbox.pTempFileHead = pTempFile;
+            KWFS_LOG(("kwFsTempFileCreateW: Created new temporary file '%ls'\n", pwszFilename));
+        }
+        else
+        {
+            KWFS_LOG(("kwFsTempFileCreateW: Out of memory!\n"));
+            SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+            return INVALID_HANDLE_VALUE;
+        }
+    }
+    else
+    {
+        switch (dwCreationDisposition)
+        {
+            case OPEN_EXISTING:
+                dwErr = NO_ERROR;
+                break;
+            case OPEN_ALWAYS:
+                dwErr = ERROR_ALREADY_EXISTS;
+                break;
+
+            case TRUNCATE_EXISTING:
+            case CREATE_ALWAYS:
+                kHlpAssertFailed();
+                pTempFile->cbFile = 0;
+                dwErr = ERROR_ALREADY_EXISTS;
+                break;
+
+            case CREATE_NEW:
+                kHlpAssertFailed();
+                SetLastError(ERROR_FILE_EXISTS);
+                return INVALID_HANDLE_VALUE;
+
+            default:
+                kHlpAssertFailed();
+                SetLastError(ERROR_INVALID_PARAMETER);
+                return INVALID_HANDLE_VALUE;
+        }
+    }
+
+    /*
+     * Create a handle to the temporary file.
+     */
+    hFile = kwFsTempFileCreateHandle(pTempFile, dwDesiredAccess, K_FALSE /*fMapping*/);
+    if (hFile != INVALID_HANDLE_VALUE)
+        SetLastError(dwErr);
+    return hFile;
+}
+
+#endif /* WITH_TEMP_MEMORY_FILES */
+
+/**
+ * Worker for kwFsIsCacheableExtensionA and kwFsIsCacheableExtensionW
+ *
+ * @returns K_TRUE if cacheable, K_FALSE if not.
+ * @param   wcFirst             The first extension character.
+ * @param   wcSecond            The second extension character.
+ * @param   wcThird             The third extension character.
+ * @param   fAttrQuery          Set if it's for an attribute query, clear if for
+ *                              file creation.
+ */
+static KBOOL kwFsIsCacheableExtensionCommon(wchar_t wcFirst, wchar_t wcSecond, wchar_t wcThird, KBOOL fAttrQuery)
+{
+    /* C++ header without an extension or a directory. */
+    if (wcFirst == '\0')
+    {
+        /** @todo exclude temporary files...  */
+        return K_TRUE;
+    }
+
+    /* C Header: .h */
+    if (wcFirst == 'h' || wcFirst == 'H')
+    {
+        if (wcSecond == '\0')
+            return K_TRUE;
+
+        /* C++ Header: .hpp, .hxx */
+        if (   (wcSecond == 'p' || wcSecond == 'P')
+            && (wcThird  == 'p' || wcThird  == 'P'))
+            return K_TRUE;
+        if (   (wcSecond == 'x' || wcSecond == 'X')
+            && (wcThird  == 'x' || wcThird  == 'X'))
+            return K_TRUE;
+    }
+    /* Misc starting with i. */
+    else if (wcFirst == 'i' || wcFirst == 'I')
+    {
+        if (wcSecond != '\0')
+        {
+            if (wcSecond == 'n' || wcSecond == 'N')
+            {
+                /* C++ inline header: .inl */
+                if (wcThird == 'l' || wcThird == 'L')
+                    return K_TRUE;
+
+                /* Assembly include file: .inc */
+                if (wcThird == 'c' || wcThird == 'C')
+                    return K_TRUE;
+            }
+        }
+    }
+    /* Assembly header: .mac */
+    else if (wcFirst == 'm' || wcFirst == 'M')
+    {
+        if (wcSecond == 'a' || wcSecond == 'A')
+        {
+            if (wcThird == 'c' || wcThird == 'C')
+                return K_TRUE;
+        }
+    }
+#ifdef WITH_PCH_CACHING
+    /* Precompiled header: .pch */
+    else if (wcFirst == 'p' || wcFirst == 'P')
+    {
+        if (wcSecond == 'c' || wcSecond == 'C')
+        {
+            if (wcThird == 'h' || wcThird == 'H')
+                return !g_Sandbox.fNoPchCaching;
+        }
+    }
+#endif
+#if 0 /* Experimental - need to flush these afterwards as they're highly unlikely to be used after the link is done.  */
+    /* Linker - Object file: .obj */
+    if ((wcFirst == 'o' || wcFirst == 'O') && g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_LINK)
+    {
+        if (wcSecond == 'b' || wcSecond == 'B')
+        {
+            if (wcThird == 'j' || wcThird == 'J')
+                return K_TRUE;
+        }
+    }
+#endif
+    else if (fAttrQuery)
+    {
+        /* Dynamic link library: .dll */
+        if (wcFirst == 'd' || wcFirst == 'D')
+        {
+            if (wcSecond == 'l' || wcSecond == 'L')
+            {
+                if (wcThird == 'l' || wcThird == 'L')
+                    return K_TRUE;
+            }
+        }
+        /* Executable file: .exe */
+        else if (wcFirst == 'e' || wcFirst == 'E')
+        {
+            if (wcSecond == 'x' || wcSecond == 'X')
+            {
+                if (wcThird == 'e' || wcThird == 'E')
+                    return K_TRUE;
+            }
+        }
+        /* Response file: .rsp */
+        else if (wcFirst == 'r' || wcFirst == 'R')
+        {
+            if (wcSecond == 's' || wcSecond == 'S')
+            {
+                if (wcThird == 'p' || wcThird == 'P')
+                    return !g_Sandbox.fNoPchCaching;
+            }
+        }
+        /* Linker: */
+        if (g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_LINK)
+        {
+            /* Object file: .obj */
+            if (wcFirst == 'o' || wcFirst == 'O')
+            {
+                if (wcSecond == 'b' || wcSecond == 'B')
+                {
+                    if (wcThird == 'j' || wcThird == 'J')
+                        return K_TRUE;
+                }
+            }
+            /* Library file: .lib */
+            else if (wcFirst == 'l' || wcFirst == 'L')
+            {
+                if (wcSecond == 'i' || wcSecond == 'I')
+                {
+                    if (wcThird == 'b' || wcThird == 'B')
+                        return K_TRUE;
+                }
+            }
+            /* Linker definition file: .def */
+            else if (wcFirst == 'd' || wcFirst == 'D')
+            {
+                if (wcSecond == 'e' || wcSecond == 'E')
+                {
+                    if (wcThird == 'f' || wcThird == 'F')
+                        return K_TRUE;
+                }
+            }
+        }
+    }
+
+    return K_FALSE;
+}
+
+
+/**
+ * Checks if the file extension indicates that the file/dir is something we
+ * ought to cache.
+ *
+ * @returns K_TRUE if cachable, K_FALSE if not.
+ * @param   pszExt              The kHlpGetExt result.
+ * @param   fAttrQuery          Set if it's for an attribute query, clear if for
+ *                              file creation.
+ */
+static KBOOL kwFsIsCacheableExtensionA(const char *pszExt, KBOOL fAttrQuery)
+{
+    wchar_t const wcFirst = *pszExt;
+    if (wcFirst)
+    {
+        wchar_t const wcSecond = pszExt[1];
+        if (wcSecond)
+        {
+            wchar_t const wcThird = pszExt[2];
+            if (pszExt[3] == '\0')
+                return kwFsIsCacheableExtensionCommon(wcFirst, wcSecond, wcThird, fAttrQuery);
+            return K_FALSE;
+        }
+        return kwFsIsCacheableExtensionCommon(wcFirst, 0, 0, fAttrQuery);
+    }
+    return kwFsIsCacheableExtensionCommon(0, 0, 0, fAttrQuery);
+}
+
+
+/**
+ * Checks if the extension of the given UTF-16 path indicates that the file/dir
+ * should be cached.
+ *
+ * @returns K_TRUE if cachable, K_FALSE if not.
+ * @param   pwszPath            The UTF-16 path to examine.
+ * @param   fAttrQuery          Set if it's for an attribute query, clear if for
+ *                              file creation.
+ */
+static KBOOL kwFsIsCacheablePathExtensionW(const wchar_t *pwszPath, KBOOL fAttrQuery)
+{
+    KSIZE           cwcExt;
+    wchar_t const  *pwszExt = kwFsPathGetExtW(pwszPath, &cwcExt);
+    switch (cwcExt)
+    {
+        case 3: return kwFsIsCacheableExtensionCommon(pwszExt[0], pwszExt[1], pwszExt[2], fAttrQuery);
+        case 2: return kwFsIsCacheableExtensionCommon(pwszExt[0], pwszExt[1], 0,          fAttrQuery);
+        case 1: return kwFsIsCacheableExtensionCommon(pwszExt[0], 0,          0,          fAttrQuery);
+        case 0: return kwFsIsCacheableExtensionCommon(0,          0,          0,          fAttrQuery);
+    }
+    return K_FALSE;
+}
+
+
+
+/**
+ * Creates a new
+ *
+ * @returns
+ * @param   pFsObj          .
+ * @param   pwszFilename    .
+ */
+static PKFSWCACHEDFILE kwFsObjCacheNewFile(PKFSOBJ pFsObj)
+{
+    HANDLE                  hFile;
+    MY_IO_STATUS_BLOCK      Ios;
+    MY_OBJECT_ATTRIBUTES    ObjAttr;
+    MY_UNICODE_STRING       UniStr;
+    MY_NTSTATUS             rcNt;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    /*
+     * Open the file relative to the parent directory.
+     */
+    kHlpAssert(pFsObj->bObjType == KFSOBJ_TYPE_FILE);
+    kHlpAssert(pFsObj->pParent);
+    kHlpAssertReturn(pFsObj->pParent->hDir != INVALID_HANDLE_VALUE, NULL);
+
+    Ios.Information = ~(ULONG_PTR)0;
+    Ios.u.Status    = -1;
+
+    UniStr.Buffer        = (wchar_t *)pFsObj->pwszName;
+    UniStr.Length        = (USHORT)(pFsObj->cwcName * sizeof(wchar_t));
+    UniStr.MaximumLength = UniStr.Length + sizeof(wchar_t);
+
+    MyInitializeObjectAttributes(&ObjAttr, &UniStr, OBJ_CASE_INSENSITIVE, pFsObj->pParent->hDir, NULL /*pSecAttr*/);
+
+    rcNt = g_pfnNtCreateFile(&hFile,
+                             GENERIC_READ | SYNCHRONIZE,
+                             &ObjAttr,
+                             &Ios,
+                             NULL, /*cbFileInitialAlloc */
+                             FILE_ATTRIBUTE_NORMAL,
+                             FILE_SHARE_READ,
+                             FILE_OPEN,
+                             FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT,
+                             NULL, /*pEaBuffer*/
+                             0);   /*cbEaBuffer*/
+    if (MY_NT_SUCCESS(rcNt))
+    {
+        /*
+         * Read the whole file into memory.
+         */
+        LARGE_INTEGER cbFile;
+        if (GetFileSizeEx(hFile, &cbFile))
+        {
+            if (   cbFile.QuadPart >= 0
+#ifdef WITH_PCH_CACHING
+                && (   cbFile.QuadPart < 16*1024*1024
+                    || (   cbFile.QuadPart < 96*1024*1024
+                        && pFsObj->cchName > 4
+                        && !g_Sandbox.fNoPchCaching
+                        && kHlpStrICompAscii(&pFsObj->pszName[pFsObj->cchName - 4], ".pch") == 0) )
+#endif
+               )
+            {
+                KU32 cbCache = (KU32)cbFile.QuadPart;
+                HANDLE hMapping = CreateFileMappingW(hFile, NULL /*pSecAttrs*/,  PAGE_READONLY,
+                                                     0 /*cbMaxLow*/, 0 /*cbMaxHigh*/, NULL /*pwszName*/);
+                if (hMapping != NULL)
+                {
+                    KU8 *pbCache = (KU8 *)MapViewOfFile(hMapping, FILE_MAP_READ, 0 /*offFileHigh*/, 0 /*offFileLow*/, cbCache);
+                    if (pbCache)
+                    {
+                        /*
+                         * Create the cached file object.
+                         */
+                        PKFSWCACHEDFILE pCachedFile;
+                        KU32            cbPath = pFsObj->cchParent + pFsObj->cchName + 2;
+                        pCachedFile = (PKFSWCACHEDFILE)kFsCacheObjAddUserData(g_pFsCache, pFsObj, KW_DATA_KEY_CACHED_FILE,
+                                                                              sizeof(*pCachedFile) + cbPath);
+                        if (pCachedFile)
+                        {
+                            pCachedFile->hCached  = hFile;
+                            pCachedFile->hSection = hMapping;
+                            pCachedFile->cbCached = cbCache;
+                            pCachedFile->pbCached = pbCache;
+                            pCachedFile->pFsObj   = pFsObj;
+                            kFsCacheObjGetFullPathA(pFsObj, pCachedFile->szPath, cbPath, '/');
+                            kFsCacheObjRetain(pFsObj);
+
+                            g_cReadCachedFiles++;
+                            g_cbReadCachedFiles += cbCache;
+
+                            KWFS_LOG(("Cached '%s': %p LB %#x, hCached=%p\n", pCachedFile->szPath, pbCache, cbCache, hFile));
+                            return pCachedFile;
+                        }
+
+                        KWFS_LOG(("Failed to allocate KFSWCACHEDFILE structure!\n"));
+                    }
+                    else
+                        KWFS_LOG(("Failed to cache file: MapViewOfFile failed: %u\n", GetLastError()));
+                    CloseHandle(hMapping);
+                }
+                else
+                    KWFS_LOG(("Failed to cache file: CreateFileMappingW failed: %u\n", GetLastError()));
+            }
+            else
+                KWFS_LOG(("File to big to cache! %#llx\n", cbFile.QuadPart));
+        }
+        else
+            KWFS_LOG(("File to get file size! err=%u\n", GetLastError()));
+        g_pfnNtClose(hFile);
+    }
+    else
+        KWFS_LOG(("Error opening '%ls' for caching: %#x\n", pFsObj->pwszName, rcNt));
+    return NULL;
+}
+
+
+/**
+ * Kernel32 - Common code for kwFsObjCacheCreateFile and CreateFileMappingW/A.
+ */
+static KBOOL kwFsObjCacheCreateFileHandle(PKFSWCACHEDFILE pCachedFile, DWORD dwDesiredAccess, BOOL fInheritHandle,
+                                          KBOOL fIsFileHandle, HANDLE *phFile)
+{
+    HANDLE hProcSelf = GetCurrentProcess();
+    if (DuplicateHandle(hProcSelf, fIsFileHandle ? pCachedFile->hCached : pCachedFile->hSection,
+                        hProcSelf, phFile,
+                        dwDesiredAccess, fInheritHandle,
+                        0 /*dwOptions*/))
+    {
+        /*
+         * Create handle table entry for the duplicate handle.
+         */
+        PKWHANDLE pHandle = (PKWHANDLE)kHlpAlloc(sizeof(*pHandle));
+        if (pHandle)
+        {
+            pHandle->enmType            = fIsFileHandle ? KWHANDLETYPE_FSOBJ_READ_CACHE : KWHANDLETYPE_FSOBJ_READ_CACHE_MAPPING;
+            pHandle->cRefs              = 1;
+            pHandle->offFile            = 0;
+            pHandle->hHandle            = *phFile;
+            pHandle->dwDesiredAccess    = dwDesiredAccess;
+            pHandle->tidOwner           = KU32_MAX;
+            pHandle->u.pCachedFile      = pCachedFile;
+            if (kwSandboxHandleTableEnter(&g_Sandbox, pHandle, pHandle->hHandle))
+                return K_TRUE;
+
+            kHlpFree(pHandle);
+        }
+        else
+            KWFS_LOG(("Out of memory for handle!\n"));
+
+        CloseHandle(*phFile);
+        *phFile = INVALID_HANDLE_VALUE;
+    }
+    else
+        KWFS_LOG(("DuplicateHandle failed! err=%u\n", GetLastError()));
+    return K_FALSE;
+}
+
+
+/**
+ * Kernel32 - Common code for CreateFileW and CreateFileA.
+ */
+static KBOOL kwFsObjCacheCreateFile(PKFSOBJ pFsObj, DWORD dwDesiredAccess, BOOL fInheritHandle, HANDLE *phFile)
+{
+    *phFile = INVALID_HANDLE_VALUE;
+
+    /*
+     * At the moment we only handle existing files.
+     */
+    if (pFsObj->bObjType == KFSOBJ_TYPE_FILE)
+    {
+        PKFSWCACHEDFILE pCachedFile = (PKFSWCACHEDFILE)kFsCacheObjGetUserData(g_pFsCache, pFsObj, KW_DATA_KEY_CACHED_FILE);
+        kHlpAssert(pFsObj->fHaveStats);
+        if (   pCachedFile != NULL
+            || (pCachedFile = kwFsObjCacheNewFile(pFsObj)) != NULL)
+        {
+            if (kwFsObjCacheCreateFileHandle(pCachedFile, dwDesiredAccess, fInheritHandle, K_TRUE /*fIsFileHandle*/, phFile))
+                return K_TRUE;
+        }
+    }
+    /** @todo Deal with non-existing files if it becomes necessary (it's not for VS2010). */
+
+    /* Do fallback, please. */
+    return K_FALSE;
+}
+
+
+/** Kernel32 - CreateFileA */
+static HANDLE WINAPI kwSandbox_Kernel32_CreateFileA(LPCSTR pszFilename, DWORD dwDesiredAccess, DWORD dwShareMode,
+                                                    LPSECURITY_ATTRIBUTES pSecAttrs, DWORD dwCreationDisposition,
+                                                    DWORD dwFlagsAndAttributes, HANDLE hTemplateFile)
+{
+    HANDLE hFile;
+
+    /*
+     * Check for include files and similar that we do read-only caching of.
+     */
+    if (dwCreationDisposition == OPEN_EXISTING)
+    {
+        if (   dwDesiredAccess == GENERIC_READ
+            || dwDesiredAccess == FILE_GENERIC_READ)
+        {
+            if (dwShareMode & FILE_SHARE_READ)
+            {
+                if (   !pSecAttrs
+                    || (   pSecAttrs->nLength == sizeof(*pSecAttrs)
+                        && pSecAttrs->lpSecurityDescriptor == NULL ) )
+                {
+                    const char *pszExt = kHlpGetExt(pszFilename);
+                    if (kwFsIsCacheableExtensionA(pszExt, K_FALSE /*fAttrQuery*/))
+                    {
+                        KFSLOOKUPERROR enmError;
+                        PKFSOBJ pFsObj;
+                        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+                        pFsObj = kFsCacheLookupA(g_pFsCache, pszFilename, &enmError);
+                        if (pFsObj)
+                        {
+                            if (pFsObj->bObjType != KFSOBJ_TYPE_MISSING)
+                            {
+                                KBOOL fRc = kwFsObjCacheCreateFile(pFsObj, dwDesiredAccess,
+                                                                   pSecAttrs && pSecAttrs->bInheritHandle, &hFile);
+                                kFsCacheObjRelease(g_pFsCache, pFsObj);
+                                if (fRc)
+                                {
+                                    KWFS_LOG(("CreateFileA(%s) -> %p [cached]\n", pszFilename, hFile));
+                                    return hFile;
+                                }
+                            }
+                            else if (!(pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN))
+                            {
+                                KWFS_LOG(("CreateFileA(%ls) -> INVALID_HANDLE_VALUE, ERROR_FILE_NOT_FOUND\n", pszFilename));
+                                SetLastError(ERROR_FILE_NOT_FOUND);
+                                return INVALID_HANDLE_VALUE;
+                            }
+                            /* Always fall back on missing files in volatile areas. */
+                        }
+                        /* These are for nasm and yasm header searching.  Cache will already
+                           have checked the directories for the file, no need to call
+                           CreateFile to do it again. */
+                        else if (enmError == KFSLOOKUPERROR_NOT_FOUND)
+                        {
+                            KWFS_LOG(("CreateFileA(%s) -> INVALID_HANDLE_VALUE, ERROR_FILE_NOT_FOUND\n", pszFilename));
+                            SetLastError(ERROR_FILE_NOT_FOUND);
+                            return INVALID_HANDLE_VALUE;
+                        }
+                        else if (   enmError == KFSLOOKUPERROR_PATH_COMP_NOT_FOUND
+                                 || enmError == KFSLOOKUPERROR_PATH_COMP_NOT_DIR)
+                        {
+                            KWFS_LOG(("CreateFileA(%s) -> INVALID_HANDLE_VALUE, ERROR_PATH_NOT_FOUND\n", pszFilename));
+                            SetLastError(ERROR_PATH_NOT_FOUND);
+                            return INVALID_HANDLE_VALUE;
+                        }
+
+                        /* fallback */
+                        hFile = CreateFileA(pszFilename, dwDesiredAccess, dwShareMode, pSecAttrs,
+                                            dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
+                        KWFS_LOG(("CreateFileA(%s) -> %p (err=%u) [fallback]\n", pszFilename, hFile, GetLastError()));
+                        return hFile;
+                    }
+                }
+            }
+        }
+    }
+
+    /*
+     * Okay, normal.
+     */
+    hFile = CreateFileA(pszFilename, dwDesiredAccess, dwShareMode, pSecAttrs,
+                        dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
+    kHlpAssert(hFile == INVALID_HANDLE_VALUE || kwSandboxHandleLookup(hFile) == NULL);
+
+    KWFS_LOG(("CreateFileA(%s) -> %p\n", pszFilename, hFile));
+    return hFile;
+}
+
+
+/** Kernel32 - CreateFileW */
+static HANDLE WINAPI kwSandbox_Kernel32_CreateFileW(LPCWSTR pwszFilename, DWORD dwDesiredAccess, DWORD dwShareMode,
+                                                    LPSECURITY_ATTRIBUTES pSecAttrs, DWORD dwCreationDisposition,
+                                                    DWORD dwFlagsAndAttributes, HANDLE hTemplateFile)
+{
+    HANDLE hFile;
+
+#ifdef WITH_TEMP_MEMORY_FILES
+    /*
+     * Check for temporary files (cl.exe only).
+     */
+    if (   g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_CL
+        && !(dwFlagsAndAttributes & (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_DEVICE | FILE_FLAG_BACKUP_SEMANTICS))
+        && !(dwDesiredAccess & (GENERIC_EXECUTE | FILE_EXECUTE))
+        && kwFsIsClTempFileW(pwszFilename))
+    {
+        KBOOL fFallback = K_FALSE;
+        hFile = kwFsTempFileCreateW(pwszFilename, dwDesiredAccess, dwCreationDisposition, &fFallback);
+        if (!fFallback)
+        {
+            KWFS_LOG(("CreateFileW(%ls) -> %p [temp]\n", pwszFilename, hFile));
+            return hFile;
+        }
+    }
+#endif
+
+    /*
+     * Check for include files and similar that we do read-only caching of.
+     */
+    if (dwCreationDisposition == OPEN_EXISTING)
+    {
+        if (   dwDesiredAccess == GENERIC_READ
+            || dwDesiredAccess == FILE_GENERIC_READ)
+        {
+            if (dwShareMode & FILE_SHARE_READ)
+            {
+                if (   !pSecAttrs
+                    || (   pSecAttrs->nLength == sizeof(*pSecAttrs)
+                        && pSecAttrs->lpSecurityDescriptor == NULL ) )
+                {
+                    if (kwFsIsCacheablePathExtensionW(pwszFilename, K_FALSE /*fAttrQuery*/))
+                    {
+                        KFSLOOKUPERROR enmError;
+                        PKFSOBJ pFsObj;
+                        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+                        pFsObj = kFsCacheLookupW(g_pFsCache, pwszFilename, &enmError);
+                        if (pFsObj)
+                        {
+                            if (pFsObj->bObjType != KFSOBJ_TYPE_MISSING)
+                            {
+                                KBOOL fRc = kwFsObjCacheCreateFile(pFsObj, dwDesiredAccess,
+                                                                   pSecAttrs && pSecAttrs->bInheritHandle, &hFile);
+                                kFsCacheObjRelease(g_pFsCache, pFsObj);
+                                if (fRc)
+                                {
+                                    KWFS_LOG(("CreateFileW(%ls) -> %p [cached]\n", pwszFilename, hFile));
+                                    return hFile;
+                                }
+                            }
+                            else if (!(pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN))
+                            {
+                                KWFS_LOG(("CreateFileW(%ls) -> INVALID_HANDLE_VALUE, ERROR_FILE_NOT_FOUND\n", pwszFilename));
+                                SetLastError(ERROR_FILE_NOT_FOUND);
+#if 0
+                                if (   pFsObj->cchName > sizeof("generated.h")
+                                    && kHlpStrICompAscii(&pFsObj->pszName[pFsObj->cchName - sizeof("generated.h") + 1], "generated.h") == 0)
+                                    kwErrPrintf("CreateFileW(%ls) -> ERROR_FILE_NOT_FOUND; pFsObj->fFlags=%#x\n", pwszFilename, pFsObj->fFlags);
+#endif
+                                return INVALID_HANDLE_VALUE;
+                            }
+                            /* Always fall back on missing files in volatile areas. */
+                        }
+                        /* These are for nasm and yasm style header searching.  Cache will
+                           already have checked the directories for the file, no need to call
+                           CreateFile to do it again. */
+                        else if (enmError == KFSLOOKUPERROR_NOT_FOUND)
+                        {
+#if 0
+                            KSIZE cwcFilename = kwUtf16Len(pwszFilename);
+                            if (   cwcFilename > sizeof("generated.h")
+                                && memcmp(&pwszFilename[cwcFilename - sizeof("generated.h") + 1],
+                                          L"generated.h", sizeof(L"generated.h")) == 0)
+                                kwErrPrintf("CreateFileW(%ls) -> ERROR_FILE_NOT_FOUND; (KFSLOOKUPERROR_NOT_FOUND)\n", pwszFilename, pFsObj->fFlags);
+#endif
+                            KWFS_LOG(("CreateFileW(%ls) -> INVALID_HANDLE_VALUE, ERROR_FILE_NOT_FOUND\n", pwszFilename));
+                            SetLastError(ERROR_FILE_NOT_FOUND);
+                            return INVALID_HANDLE_VALUE;
+                        }
+                        else if (   enmError == KFSLOOKUPERROR_PATH_COMP_NOT_FOUND
+                                 || enmError == KFSLOOKUPERROR_PATH_COMP_NOT_DIR)
+                        {
+#if 0
+                            KSIZE cwcFilename = kwUtf16Len(pwszFilename);
+                            if (   cwcFilename > sizeof("generated.h")
+                                && memcmp(&pwszFilename[cwcFilename - sizeof("generated.h") + 1],
+                                          L"generated.h", sizeof(L"generated.h")) == 0)
+                                kwErrPrintf("CreateFileW(%ls) -> ERROR_PATH_NOT_FOUND; (%d)\n", pwszFilename, enmError);
+#endif
+                            KWFS_LOG(("CreateFileW(%ls) -> INVALID_HANDLE_VALUE, ERROR_PATH_NOT_FOUND\n", pwszFilename));
+                            SetLastError(ERROR_PATH_NOT_FOUND);
+                            return INVALID_HANDLE_VALUE;
+                        }
+
+                        /* fallback */
+                        hFile = CreateFileW(pwszFilename, dwDesiredAccess, dwShareMode, pSecAttrs,
+                                            dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
+                        KWFS_LOG(("CreateFileW(%ls) -> %p (err=%u) [fallback]\n", pwszFilename, hFile, GetLastError()));
+                        return hFile;
+                    }
+                }
+                else
+                    KWFS_LOG(("CreateFileW: incompatible security attributes (nLength=%#x pDesc=%p)\n",
+                              pSecAttrs->nLength, pSecAttrs->lpSecurityDescriptor));
+            }
+            else
+                KWFS_LOG(("CreateFileW: incompatible sharing mode %#x\n", dwShareMode));
+        }
+        else
+            KWFS_LOG(("CreateFileW: incompatible desired access %#x\n", dwDesiredAccess));
+    }
+    else
+        KWFS_LOG(("CreateFileW: incompatible disposition %u\n", dwCreationDisposition));
+
+    /*
+     * Okay, normal.
+     */
+    hFile = CreateFileW(pwszFilename, dwDesiredAccess, dwShareMode, pSecAttrs,
+                        dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
+    kHlpAssert(hFile == INVALID_HANDLE_VALUE || kwSandboxHandleLookup(hFile) == NULL);
+
+    KWFS_LOG(("CreateFileW(%ls) -> %p\n", pwszFilename, hFile));
+    return hFile;
+}
+
+
+
+/** Kernel32 - SetFilePointer */
+static DWORD WINAPI kwSandbox_Kernel32_SetFilePointer(HANDLE hFile, LONG cbMove, PLONG pcbMoveHi, DWORD dwMoveMethod)
+{
+    PKWHANDLE pHandle = kwSandboxHandleGet(hFile);
+    if (pHandle != NULL)
+    {
+        KU32 cbFile;
+        KI64 offMove = pcbMoveHi ? ((KI64)*pcbMoveHi << 32) | cbMove : cbMove;
+        switch (pHandle->enmType)
+        {
+            case KWHANDLETYPE_FSOBJ_READ_CACHE:
+                cbFile = pHandle->u.pCachedFile->cbCached;
+                break;
+#ifdef WITH_TEMP_MEMORY_FILES
+            case KWHANDLETYPE_TEMP_FILE:
+                cbFile = pHandle->u.pTempFile->cbFile;
+                break;
+            case KWHANDLETYPE_TEMP_FILE_MAPPING:
+#endif
+            case KWHANDLETYPE_OUTPUT_BUF:
+            default:
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_INVALID_FUNCTION);
+                return INVALID_SET_FILE_POINTER;
+        }
+
+        switch (dwMoveMethod)
+        {
+            case FILE_BEGIN:
+                break;
+            case FILE_CURRENT:
+                offMove += pHandle->offFile;
+                break;
+            case FILE_END:
+                offMove += cbFile;
+                break;
+            default:
+                KWFS_LOG(("SetFilePointer(%p) - invalid seek method %u! [cached]\n", hFile));
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_INVALID_PARAMETER);
+                return INVALID_SET_FILE_POINTER;
+        }
+        if (offMove >= 0)
+        {
+            if (offMove >= (KSSIZE)cbFile)
+            {
+#ifdef WITH_TEMP_MEMORY_FILES
+                /* For read-only files, seeking beyond the end isn't useful to us, so clamp it. */
+                if (pHandle->enmType != KWHANDLETYPE_TEMP_FILE)
+#endif
+                    offMove = (KSSIZE)cbFile;
+#ifdef WITH_TEMP_MEMORY_FILES
+                /* For writable files, seeking beyond the end is fine, but check that we've got
+                   the type range for the request. */
+                else if (((KU64)offMove & KU32_MAX) != (KU64)offMove)
+                {
+                    kHlpAssertMsgFailed(("%#llx\n", offMove));
+                    kwSandboxHandlePut(pHandle);
+                    SetLastError(ERROR_SEEK);
+                    return INVALID_SET_FILE_POINTER;
+                }
+#endif
+            }
+            pHandle->offFile = (KU32)offMove;
+        }
+        else
+        {
+            KWFS_LOG(("SetFilePointer(%p) - negative seek! [cached]\n", hFile));
+            kwSandboxHandlePut(pHandle);
+            SetLastError(ERROR_NEGATIVE_SEEK);
+            return INVALID_SET_FILE_POINTER;
+        }
+        if (pcbMoveHi)
+            *pcbMoveHi = (KU64)offMove >> 32;
+        KWFS_LOG(("SetFilePointer(%p,%#x,?,%u) -> %#llx [%s]\n", hFile, cbMove, dwMoveMethod, offMove,
+                  pHandle->enmType == KWHANDLETYPE_FSOBJ_READ_CACHE ? "cached" : "temp"));
+        kwSandboxHandlePut(pHandle);
+        SetLastError(NO_ERROR);
+        return (KU32)offMove;
+    }
+
+    KWFS_LOG(("SetFilePointer(%p, %d, %p=%d, %d)\n", hFile, cbMove, pcbMoveHi ? *pcbMoveHi : 0, dwMoveMethod));
+    return SetFilePointer(hFile, cbMove, pcbMoveHi, dwMoveMethod);
+}
+
+
+/** Kernel32 - SetFilePointerEx */
+static BOOL WINAPI kwSandbox_Kernel32_SetFilePointerEx(HANDLE hFile, LARGE_INTEGER offMove, PLARGE_INTEGER poffNew,
+                                                       DWORD dwMoveMethod)
+{
+    PKWHANDLE pHandle = kwSandboxHandleGet(hFile);
+    if (pHandle != NULL)
+    {
+        KI64 offMyMove = offMove.QuadPart;
+        KU32 cbFile;
+        switch (pHandle->enmType)
+        {
+            case KWHANDLETYPE_FSOBJ_READ_CACHE:
+                cbFile = pHandle->u.pCachedFile->cbCached;
+                break;
+#ifdef WITH_TEMP_MEMORY_FILES
+            case KWHANDLETYPE_TEMP_FILE:
+                cbFile = pHandle->u.pTempFile->cbFile;
+                break;
+            case KWHANDLETYPE_TEMP_FILE_MAPPING:
+#endif
+            case KWHANDLETYPE_OUTPUT_BUF:
+            default:
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_INVALID_FUNCTION);
+                return FALSE;
+        }
+
+        switch (dwMoveMethod)
+        {
+            case FILE_BEGIN:
+                break;
+            case FILE_CURRENT:
+                offMyMove += pHandle->offFile;
+                break;
+            case FILE_END:
+                offMyMove += cbFile;
+                break;
+            default:
+                KWFS_LOG(("SetFilePointer(%p) - invalid seek method %u! [cached]\n", hFile));
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_INVALID_PARAMETER);
+                return FALSE;
+        }
+        if (offMyMove >= 0)
+        {
+            if (offMyMove >= (KSSIZE)cbFile)
+            {
+#ifdef WITH_TEMP_MEMORY_FILES
+                /* For read-only files, seeking beyond the end isn't useful to us, so clamp it. */
+                if (pHandle->enmType != KWHANDLETYPE_TEMP_FILE)
+#endif
+                    offMyMove = (KSSIZE)cbFile;
+#ifdef WITH_TEMP_MEMORY_FILES
+                /* For writable files, seeking beyond the end is fine, but check that we've got
+                   the type range for the request. */
+                else if (((KU64)offMyMove & KU32_MAX) != (KU64)offMyMove)
+                {
+                    kHlpAssertMsgFailed(("%#llx\n", offMyMove));
+                    kwSandboxHandlePut(pHandle);
+                    SetLastError(ERROR_SEEK);
+                    return FALSE;
+                }
+#endif
+            }
+            pHandle->offFile = (KU32)offMyMove;
+        }
+        else
+        {
+            KWFS_LOG(("SetFilePointerEx(%p) - negative seek! [cached]\n", hFile));
+            kwSandboxHandlePut(pHandle);
+            SetLastError(ERROR_NEGATIVE_SEEK);
+            return FALSE;
+        }
+        if (poffNew)
+            poffNew->QuadPart = offMyMove;
+        KWFS_LOG(("SetFilePointerEx(%p,%#llx,,%u) -> TRUE, %#llx [%s]\n", hFile, offMove.QuadPart, dwMoveMethod, offMyMove,
+                  pHandle->enmType == KWHANDLETYPE_FSOBJ_READ_CACHE ? "cached" : "temp"));
+        kwSandboxHandlePut(pHandle);
+        return TRUE;
+    }
+    KWFS_LOG(("SetFilePointerEx(%p)\n", hFile));
+    return SetFilePointerEx(hFile, offMove, poffNew, dwMoveMethod);
+}
+
+
+/** Kernel32 - ReadFile */
+static BOOL WINAPI kwSandbox_Kernel32_ReadFile(HANDLE hFile, LPVOID pvBuffer, DWORD cbToRead, LPDWORD pcbActuallyRead,
+                                               LPOVERLAPPED pOverlapped)
+{
+    BOOL      fRet;
+    PKWHANDLE pHandle = kwSandboxHandleGet(hFile);
+    g_cReadFileCalls++;
+    if (pHandle != NULL)
+    {
+        switch (pHandle->enmType)
+        {
+            case KWHANDLETYPE_FSOBJ_READ_CACHE:
+            {
+                PKFSWCACHEDFILE pCachedFile = pHandle->u.pCachedFile;
+                KU32            cbActually = pCachedFile->cbCached - pHandle->offFile;
+                if (cbActually > cbToRead)
+                    cbActually = cbToRead;
+
+#ifdef WITH_HASH_CACHE
+                if (g_Sandbox.pHashHead)
+                {
+                    g_Sandbox.LastHashRead.pCachedFile = pCachedFile;
+                    g_Sandbox.LastHashRead.offRead     = pHandle->offFile;
+                    g_Sandbox.LastHashRead.cbRead      = cbActually;
+                    g_Sandbox.LastHashRead.pvRead      = pvBuffer;
+                }
+#endif
+
+                kHlpMemCopy(pvBuffer, &pCachedFile->pbCached[pHandle->offFile], cbActually);
+                pHandle->offFile += cbActually;
+
+                kHlpAssert(!pOverlapped); kHlpAssert(pcbActuallyRead);
+                *pcbActuallyRead = cbActually;
+
+                g_cbReadFileFromReadCached += cbActually;
+                g_cbReadFileTotal          += cbActually;
+                g_cReadFileFromReadCached++;
+
+                KWFS_LOG(("ReadFile(%p,,%#x) -> TRUE, %#x bytes [cached]\n", hFile, cbToRead, cbActually));
+                kwSandboxHandlePut(pHandle);
+                return TRUE;
+            }
+
+#ifdef WITH_TEMP_MEMORY_FILES
+            case KWHANDLETYPE_TEMP_FILE:
+            {
+                PKWFSTEMPFILE   pTempFile  = pHandle->u.pTempFile;
+                KU32            cbActually;
+                if (pHandle->offFile < pTempFile->cbFile)
+                {
+                    cbActually = pTempFile->cbFile - pHandle->offFile;
+                    if (cbActually > cbToRead)
+                        cbActually = cbToRead;
+
+                    /* Copy the data. */
+                    if (cbActually > 0)
+                    {
+                        KU32                    cbLeft;
+                        KU32                    offSeg;
+                        KWFSTEMPFILESEG const  *paSegs = pTempFile->paSegs;
+
+                        /* Locate the segment containing the byte at offFile. */
+                        KU32 iSeg   = pTempFile->cSegs - 1;
+                        kHlpAssert(pTempFile->cSegs > 0);
+                        while (paSegs[iSeg].offData > pHandle->offFile)
+                            iSeg--;
+
+                        /* Copy out the data. */
+                        cbLeft = cbActually;
+                        offSeg = (pHandle->offFile - paSegs[iSeg].offData);
+                        for (;;)
+                        {
+                            KU32 cbAvail = paSegs[iSeg].cbDataAlloc - offSeg;
+                            if (cbAvail >= cbLeft)
+                            {
+                                kHlpMemCopy(pvBuffer, &paSegs[iSeg].pbData[offSeg], cbLeft);
+                                break;
+                            }
+
+                            pvBuffer = kHlpMemPCopy(pvBuffer, &paSegs[iSeg].pbData[offSeg], cbAvail);
+                            cbLeft  -= cbAvail;
+                            offSeg   = 0;
+                            iSeg++;
+                            kHlpAssert(iSeg < pTempFile->cSegs);
+                        }
+
+                        /* Update the file offset. */
+                        pHandle->offFile += cbActually;
+                    }
+                }
+                /* Read does not commit file space, so return zero bytes. */
+                else
+                    cbActually = 0;
+
+                kHlpAssert(!pOverlapped); kHlpAssert(pcbActuallyRead);
+                *pcbActuallyRead = cbActually;
+
+                g_cbReadFileTotal         += cbActually;
+                g_cbReadFileFromInMemTemp += cbActually;
+                g_cReadFileFromInMemTemp++;
+
+                KWFS_LOG(("ReadFile(%p,,%#x) -> TRUE, %#x bytes [temp]\n", hFile, cbToRead, (KU32)cbActually));
+                kwSandboxHandlePut(pHandle);
+                return TRUE;
+            }
+
+            case KWHANDLETYPE_TEMP_FILE_MAPPING:
+#endif /* WITH_TEMP_MEMORY_FILES */
+            case KWHANDLETYPE_OUTPUT_BUF:
+            default:
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_INVALID_FUNCTION);
+                *pcbActuallyRead = 0;
+                return FALSE;
+        }
+    }
+
+    fRet = ReadFile(hFile, pvBuffer, cbToRead, pcbActuallyRead, pOverlapped);
+    if (fRet && pcbActuallyRead)
+        g_cbReadFileTotal += *pcbActuallyRead;
+    KWFS_LOG(("ReadFile(%p,%p,%#x,,) -> %d, %#x\n", hFile, pvBuffer, cbToRead, fRet, pcbActuallyRead ? *pcbActuallyRead : 0));
+    return fRet;
+}
+
+
+/** Kernel32 - ReadFileEx */
+static BOOL WINAPI kwSandbox_Kernel32_ReadFileEx(HANDLE hFile, LPVOID pvBuffer, DWORD cbToRead, LPOVERLAPPED pOverlapped,
+                                                 LPOVERLAPPED_COMPLETION_ROUTINE pfnCompletionRoutine)
+{
+    kHlpAssert(kwSandboxHandleLookup(hFile) == NULL);
+
+    KWFS_LOG(("ReadFile(%p)\n", hFile));
+    return ReadFileEx(hFile, pvBuffer, cbToRead, pOverlapped, pfnCompletionRoutine);
+}
+
+#ifdef WITH_STD_OUT_ERR_BUFFERING
+
+/**
+ * Write something to a handle, making sure everything is actually written.
+ *
+ * @param   hHandle         Where to write it to.
+ * @param   pchBuf          What to write
+ * @param   cchToWrite      How much to write.
+ */
+static void kwSandboxOutBufWriteIt(HANDLE hFile, char const *pchBuf, KU32 cchToWrite)
+{
+    if (cchToWrite > 0)
+    {
+        DWORD cchWritten = 0;
+        if (WriteFile(hFile, pchBuf, cchToWrite, &cchWritten, NULL))
+        {
+            if (cchWritten == cchToWrite)
+            { /* likely */ }
+            else
+            {
+                do
+                {
+                    pchBuf += cchWritten;
+                    cchToWrite -= cchWritten;
+                    cchWritten = 0;
+                } while (   cchToWrite > 0
+                         && WriteFile(hFile, pchBuf, cchToWrite, &cchWritten, NULL));
+            }
+        }
+        else
+            kHlpAssertFailed();
+    }
+}
+
+
+/**
+ * Worker for WriteFile when the output isn't going to the console.
+ *
+ * @param   pSandbox            The sandbox.
+ * @param   pOutBuf             The output buffer.
+ * @param   pchBuffer           What to write.
+ * @param   cchToWrite          How much to write.
+ */
+static void kwSandboxOutBufWrite(PKWSANDBOX pSandbox, PKWOUTPUTSTREAMBUF pOutBuf, const char *pchBuffer, KU32 cchToWrite)
+{
+    if (pOutBuf->u.Fully.cchBufAlloc > 0)
+    { /* likely */ }
+    else
+    {
+        /* No realloc, max size is 64KB. */
+        pOutBuf->u.Fully.cchBufAlloc = 0x10000;
+        pOutBuf->u.Fully.pchBuf = (char *)kHlpAlloc(pOutBuf->u.Fully.cchBufAlloc);
+        if (!pOutBuf->u.Fully.pchBuf)
+        {
+            while (   !pOutBuf->u.Fully.pchBuf
+                   && pOutBuf->u.Fully.cchBufAlloc > 64)
+            {
+                pOutBuf->u.Fully.cchBufAlloc /= 2;
+                pOutBuf->u.Fully.pchBuf = (char *)kHlpAlloc(pOutBuf->u.Fully.cchBufAlloc);
+            }
+            if (!pOutBuf->u.Fully.pchBuf)
+            {
+                pOutBuf->u.Fully.cchBufAlloc = sizeof(pOutBuf->abPadding);
+                pOutBuf->u.Fully.pchBuf      = (char *)&pOutBuf->abPadding[0];
+            }
+        }
+    }
+
+    /*
+     * Special case: Output ends with newline and fits in the buffer.
+     */
+    if (   cchToWrite > 1
+        && pchBuffer[cchToWrite - 1] == '\n'
+        && cchToWrite <= pOutBuf->u.Fully.cchBufAlloc - pOutBuf->u.Fully.cchBuf)
+    {
+        kHlpMemCopy(&pOutBuf->u.Fully.pchBuf[pOutBuf->u.Fully.cchBuf], pchBuffer, cchToWrite);
+        pOutBuf->u.Fully.cchBuf += cchToWrite;
+    }
+    else
+    {
+        /*
+         * Work thru the text line by line, flushing the buffer when
+         * appropriate.  The buffer is not a line buffer here, it's a
+         * full buffer.
+         */
+        while (cchToWrite > 0)
+        {
+            char const *pchNewLine = (const char *)memchr(pchBuffer, '\n', cchToWrite);
+            KU32        cchLine    = pchNewLine ? (KU32)(pchNewLine - pchBuffer) + 1 : cchToWrite;
+            if (cchLine <= pOutBuf->u.Fully.cchBufAlloc - pOutBuf->u.Fully.cchBuf)
+            {
+                kHlpMemCopy(&pOutBuf->u.Fully.pchBuf[pOutBuf->u.Fully.cchBuf], pchBuffer, cchLine);
+                pOutBuf->u.Fully.cchBuf += cchLine;
+            }
+            /*
+             * Option one: Flush the buffer and the current line.
+             *
+             * We choose this one when the line won't ever fit, or when we have
+             * an incomplete line in the buffer.
+             */
+            else if (   cchLine >= pOutBuf->u.Fully.cchBufAlloc
+                     || pOutBuf->u.Fully.cchBuf == 0
+                     || pOutBuf->u.Fully.pchBuf[pOutBuf->u.Fully.cchBuf - 1] != '\n')
+            {
+                KWOUT_LOG(("kwSandboxOutBufWrite: flushing %u bytes, writing %u bytes\n", pOutBuf->u.Fully.cchBuf, cchLine));
+                if (pOutBuf->u.Fully.cchBuf > 0)
+                {
+                    kwSandboxOutBufWriteIt(pOutBuf->hBackup, pOutBuf->u.Fully.pchBuf, pOutBuf->u.Fully.cchBuf);
+                    pOutBuf->u.Fully.cchBuf = 0;
+                }
+                kwSandboxOutBufWriteIt(pOutBuf->hBackup, pchBuffer, cchLine);
+            }
+            /*
+             * Option two: Only flush the lines in the buffer.
+             */
+            else
+            {
+                KWOUT_LOG(("kwSandboxOutBufWrite: flushing %u bytes\n", pOutBuf->u.Fully.cchBuf));
+                kwSandboxOutBufWriteIt(pOutBuf->hBackup, pOutBuf->u.Fully.pchBuf, pOutBuf->u.Fully.cchBuf);
+                kHlpMemCopy(&pOutBuf->u.Fully.pchBuf[0], pchBuffer, cchLine);
+                pOutBuf->u.Fully.cchBuf = cchLine;
+            }
+
+            /* advance */
+            pchBuffer  += cchLine;
+            cchToWrite -= cchLine;
+        }
+    }
+}
+
+#endif  /* WITH_STD_OUT_ERR_BUFFERING */
+
+#ifdef WITH_TEMP_MEMORY_FILES
+static KBOOL kwFsTempFileEnsureSpace(PKWFSTEMPFILE pTempFile, KU32 offFile, KU32 cbNeeded)
+{
+    KU32 cbMinFile = offFile + cbNeeded;
+    if (cbMinFile >= offFile)
+    {
+        /* Calc how much space we've already allocated and  */
+        if (cbMinFile <= pTempFile->cbFileAllocated)
+            return K_TRUE;
+
+        /* Grow the file. */
+        if (cbMinFile <= KWFS_TEMP_FILE_MAX)
+        {
+            int  rc;
+            KU32 cSegs    = pTempFile->cSegs;
+            KU32 cbNewSeg = cbMinFile > 4*1024*1024 ? 256*1024 : 4*1024*1024;
+            do
+            {
+                /* grow the segment array? */
+                if ((cSegs % 16) == 0)
+                {
+                    void *pvNew = kHlpRealloc(pTempFile->paSegs, (cSegs + 16) * sizeof(pTempFile->paSegs[0]));
+                    if (!pvNew)
+                        return K_FALSE;
+                    pTempFile->paSegs = (PKWFSTEMPFILESEG)pvNew;
+                }
+
+                /* Use page alloc here to simplify mapping later. */
+                rc = kHlpPageAlloc((void **)&pTempFile->paSegs[cSegs].pbData, cbNewSeg, KPROT_READWRITE, K_FALSE);
+                if (rc == 0)
+                { /* likely */ }
+                else
+                {
+                    cbNewSeg = 64*1024;
+                    rc = kHlpPageAlloc((void **)&pTempFile->paSegs[cSegs].pbData, cbNewSeg, KPROT_READWRITE, K_FALSE);
+                    if (rc != 0)
+                    {
+                        kHlpAssertFailed();
+                        return K_FALSE;
+                    }
+                }
+                pTempFile->paSegs[cSegs].offData     = pTempFile->cbFileAllocated;
+                pTempFile->paSegs[cSegs].cbDataAlloc = cbNewSeg;
+                pTempFile->cbFileAllocated          += cbNewSeg;
+                pTempFile->cSegs                     = ++cSegs;
+
+            } while (pTempFile->cbFileAllocated < cbMinFile);
+
+            return K_TRUE;
+        }
+    }
+
+    kHlpAssertMsgFailed(("Out of bounds offFile=%#x + cbNeeded=%#x = %#x\n", offFile, cbNeeded, offFile + cbNeeded));
+    return K_FALSE;
+}
+#endif /* WITH_TEMP_MEMORY_FILES */
+
+
+#if defined(WITH_TEMP_MEMORY_FILES) || defined(WITH_STD_OUT_ERR_BUFFERING)
+/** Kernel32 - WriteFile */
+static BOOL WINAPI kwSandbox_Kernel32_WriteFile(HANDLE hFile, LPCVOID pvBuffer, DWORD cbToWrite, LPDWORD pcbActuallyWritten,
+                                                LPOVERLAPPED pOverlapped)
+{
+    PKWHANDLE   pHandle = kwSandboxHandleGet(hFile);
+    BOOL        fRet;
+    g_cWriteFileCalls++;
+    if (pHandle != NULL)
+    {
+        switch (pHandle->enmType)
+        {
+# ifdef WITH_TEMP_MEMORY_FILES
+            case KWHANDLETYPE_TEMP_FILE:
+            {
+                PKWFSTEMPFILE   pTempFile  = pHandle->u.pTempFile;
+
+                kHlpAssert(!pOverlapped);
+                kHlpAssert(pcbActuallyWritten);
+
+                if (kwFsTempFileEnsureSpace(pTempFile, pHandle->offFile, cbToWrite))
+                {
+                    KU32                    cbLeft;
+                    KU32                    offSeg;
+
+                    /* Locate the segment containing the byte at offFile. */
+                    KWFSTEMPFILESEG const  *paSegs = pTempFile->paSegs;
+                    KU32                    iSeg   = pTempFile->cSegs - 1;
+                    kHlpAssert(pTempFile->cSegs > 0);
+                    while (paSegs[iSeg].offData > pHandle->offFile)
+                        iSeg--;
+
+                    /* Copy in the data. */
+                    cbLeft = cbToWrite;
+                    offSeg = (pHandle->offFile - paSegs[iSeg].offData);
+                    for (;;)
+                    {
+                        KU32 cbAvail = paSegs[iSeg].cbDataAlloc - offSeg;
+                        if (cbAvail >= cbLeft)
+                        {
+                            kHlpMemCopy(&paSegs[iSeg].pbData[offSeg], pvBuffer, cbLeft);
+                            break;
+                        }
+
+                        kHlpMemCopy(&paSegs[iSeg].pbData[offSeg], pvBuffer, cbAvail);
+                        pvBuffer = (KU8 const *)pvBuffer + cbAvail;
+                        cbLeft  -= cbAvail;
+                        offSeg   = 0;
+                        iSeg++;
+                        kHlpAssert(iSeg < pTempFile->cSegs);
+                    }
+
+                    /* Update the file offset. */
+                    pHandle->offFile += cbToWrite;
+                    if (pHandle->offFile > pTempFile->cbFile)
+                        pTempFile->cbFile = pHandle->offFile;
+
+                    *pcbActuallyWritten = cbToWrite;
+
+                    g_cbWriteFileTotal += cbToWrite;
+                    g_cbWriteFileToInMemTemp += cbToWrite;
+                    g_cWriteFileToInMemTemp++;
+
+                    KWFS_LOG(("WriteFile(%p,,%#x) -> TRUE [temp]\n", hFile, cbToWrite));
+                    kwSandboxHandlePut(pHandle);
+                    return TRUE;
+                }
+
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                *pcbActuallyWritten = 0;
+                SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+                return FALSE;
+            }
+# endif
+
+            case KWHANDLETYPE_FSOBJ_READ_CACHE:
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_ACCESS_DENIED);
+                *pcbActuallyWritten = 0;
+                return FALSE;
+
+# if defined(WITH_STD_OUT_ERR_BUFFERING) || defined(WITH_CONSOLE_OUTPUT_BUFFERING)
+            /*
+             * Standard output & error.
+             */
+            case KWHANDLETYPE_OUTPUT_BUF:
+            {
+                PKWOUTPUTSTREAMBUF pOutBuf = pHandle->u.pOutBuf;
+                if (pOutBuf->fIsConsole)
+                {
+                    kwSandboxConsoleWriteA(&g_Sandbox, pOutBuf, (const char *)pvBuffer, cbToWrite);
+                    KWOUT_LOG(("WriteFile(%p [console]) -> TRUE\n", hFile));
+                }
+                else
+                {
+#  ifdef WITH_STD_OUT_ERR_BUFFERING
+                    kwSandboxOutBufWrite(&g_Sandbox, pOutBuf, (const char *)pvBuffer, cbToWrite);
+                    KWOUT_LOG(("WriteFile(%p [std%s], 's*.*', %#x) -> TRUE\n", hFile,
+                               pOutBuf == &g_Sandbox.StdErr ? "err" : "out", cbToWrite, cbToWrite, pvBuffer, cbToWrite));
+#  else
+                    kHlpAssertFailed();
+#  endif
+                }
+                if (pcbActuallyWritten)
+                    *pcbActuallyWritten = cbToWrite;
+                g_cbWriteFileTotal += cbToWrite;
+                kwSandboxHandlePut(pHandle);
+                return TRUE;
+            }
+# endif
+
+            default:
+#ifdef WITH_TEMP_MEMORY_FILES
+            case KWHANDLETYPE_TEMP_FILE_MAPPING:
+#endif
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_INVALID_FUNCTION);
+                *pcbActuallyWritten = 0;
+                return FALSE;
+        }
+    }
+
+    fRet = WriteFile(hFile, pvBuffer, cbToWrite, pcbActuallyWritten, pOverlapped);
+    if (fRet && pcbActuallyWritten)
+        g_cbWriteFileTotal += *pcbActuallyWritten;
+    KWFS_LOG(("WriteFile(%p,,%#x) -> %d, %#x\n", hFile, cbToWrite, fRet, pcbActuallyWritten ? *pcbActuallyWritten : 0));
+    return fRet;
+}
+
+
+/** Kernel32 - WriteFileEx */
+static BOOL WINAPI kwSandbox_Kernel32_WriteFileEx(HANDLE hFile, LPCVOID pvBuffer, DWORD cbToWrite, LPOVERLAPPED pOverlapped,
+                                                  LPOVERLAPPED_COMPLETION_ROUTINE pfnCompletionRoutine)
+{
+    kHlpAssert(kwSandboxHandleLookup(hFile) == NULL);
+
+    KWFS_LOG(("WriteFileEx(%p)\n", hFile));
+    return WriteFileEx(hFile, pvBuffer, cbToWrite, pOverlapped, pfnCompletionRoutine);
+}
+
+#endif /* WITH_TEMP_MEMORY_FILES || WITH_STD_OUT_ERR_BUFFERING */
+
+#ifdef WITH_TEMP_MEMORY_FILES
+
+/** Kernel32 - SetEndOfFile; */
+static BOOL WINAPI kwSandbox_Kernel32_SetEndOfFile(HANDLE hFile)
+{
+    PKWHANDLE pHandle = kwSandboxHandleGet(hFile);
+    if (pHandle != NULL)
+    {
+        switch (pHandle->enmType)
+        {
+            case KWHANDLETYPE_TEMP_FILE:
+            {
+                PKWFSTEMPFILE   pTempFile  = pHandle->u.pTempFile;
+                if (   pHandle->offFile > pTempFile->cbFile
+                    && !kwFsTempFileEnsureSpace(pTempFile, pHandle->offFile, 0))
+                {
+                    kHlpAssertFailed();
+                    kwSandboxHandlePut(pHandle);
+                    SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+                    return FALSE;
+                }
+
+                pTempFile->cbFile = pHandle->offFile;
+                KWFS_LOG(("SetEndOfFile(%p) -> TRUE (cbFile=%#x)\n", hFile, pTempFile->cbFile));
+                kwSandboxHandlePut(pHandle);
+                return TRUE;
+            }
+
+            case KWHANDLETYPE_FSOBJ_READ_CACHE:
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_ACCESS_DENIED);
+                return FALSE;
+
+# ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+            case KWHANDLETYPE_OUTPUT_BUF:
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                SetLastError(pHandle->u.pOutBuf->fIsConsole ? ERROR_INVALID_OPERATION : ERROR_ACCESS_DENIED);
+                return FALSE;
+# endif
+
+            default:
+            case KWHANDLETYPE_TEMP_FILE_MAPPING:
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_INVALID_FUNCTION);
+                return FALSE;
+        }
+    }
+
+    KWFS_LOG(("SetEndOfFile(%p)\n", hFile));
+    return SetEndOfFile(hFile);
+}
+
+
+/** Kernel32 - GetFileType  */
+static BOOL WINAPI kwSandbox_Kernel32_GetFileType(HANDLE hFile)
+{
+    PKWHANDLE pHandle = kwSandboxHandleGet(hFile);
+    if (pHandle != NULL)
+    {
+        switch (pHandle->enmType)
+        {
+            case KWHANDLETYPE_FSOBJ_READ_CACHE:
+                KWFS_LOG(("GetFileType(%p) -> FILE_TYPE_DISK [cached]\n", hFile));
+                kwSandboxHandlePut(pHandle);
+                return FILE_TYPE_DISK;
+
+            case KWHANDLETYPE_TEMP_FILE:
+                KWFS_LOG(("GetFileType(%p) -> FILE_TYPE_DISK [temp]\n", hFile));
+                kwSandboxHandlePut(pHandle);
+                return FILE_TYPE_DISK;
+
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+            case KWHANDLETYPE_OUTPUT_BUF:
+            {
+                PKWOUTPUTSTREAMBUF pOutBuf = pHandle->u.pOutBuf;
+                DWORD fRet;
+                if (pOutBuf->fFileType != KU8_MAX)
+                {
+                    fRet = (pOutBuf->fFileType & 0xf) | ((pOutBuf->fFileType & (FILE_TYPE_REMOTE >> 8)) << 8);
+                    KWFS_LOG(("GetFileType(%p) -> %#x [outbuf]\n", hFile, fRet));
+                }
+                else
+                {
+                    fRet = GetFileType(hFile);
+                    KWFS_LOG(("GetFileType(%p) -> %#x [outbuf, fallback]\n", hFile, fRet));
+                }
+                kwSandboxHandlePut(pHandle);
+                return fRet;
+            }
+#endif
+        }
+        kwSandboxHandlePut(pHandle);
+    }
+
+    KWFS_LOG(("GetFileType(%p)\n", hFile));
+    return GetFileType(hFile);
+}
+
+
+/** Kernel32 - GetFileSize  */
+static DWORD WINAPI kwSandbox_Kernel32_GetFileSize(HANDLE hFile, LPDWORD pcbHighDword)
+{
+    PKWHANDLE pHandle = kwSandboxHandleGet(hFile);
+    if (pHandle != NULL)
+    {
+        if (pcbHighDword)
+            *pcbHighDword = 0;
+        SetLastError(NO_ERROR);
+        switch (pHandle->enmType)
+        {
+            case KWHANDLETYPE_FSOBJ_READ_CACHE:
+                KWFS_LOG(("GetFileSize(%p) -> %#x [cached]\n", hFile, pHandle->u.pCachedFile->cbCached));
+                kwSandboxHandlePut(pHandle);
+                return pHandle->u.pCachedFile->cbCached;
+
+            case KWHANDLETYPE_TEMP_FILE:
+                KWFS_LOG(("GetFileSize(%p) -> %#x [temp]\n", hFile, pHandle->u.pTempFile->cbFile));
+                kwSandboxHandlePut(pHandle);
+                return pHandle->u.pTempFile->cbFile;
+
+            case KWHANDLETYPE_OUTPUT_BUF:
+                /* do default */
+                break;
+
+            default:
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_INVALID_FUNCTION);
+                return INVALID_FILE_SIZE;
+        }
+        kwSandboxHandlePut(pHandle);
+    }
+
+    KWFS_LOG(("GetFileSize(%p,)\n", hFile));
+    return GetFileSize(hFile, pcbHighDword);
+}
+
+
+/** Kernel32 - GetFileSizeEx  */
+static BOOL WINAPI kwSandbox_Kernel32_GetFileSizeEx(HANDLE hFile, PLARGE_INTEGER pcbFile)
+{
+    PKWHANDLE pHandle = kwSandboxHandleGet(hFile);
+    if (pHandle != NULL)
+    {
+        switch (pHandle->enmType)
+        {
+            case KWHANDLETYPE_FSOBJ_READ_CACHE:
+                KWFS_LOG(("GetFileSizeEx(%p) -> TRUE, %#x [cached]\n", hFile, pHandle->u.pCachedFile->cbCached));
+                pcbFile->QuadPart = pHandle->u.pCachedFile->cbCached;
+                kwSandboxHandlePut(pHandle);
+                return TRUE;
+
+            case KWHANDLETYPE_TEMP_FILE:
+                KWFS_LOG(("GetFileSizeEx(%p) -> TRUE, %#x [temp]\n", hFile, pHandle->u.pTempFile->cbFile));
+                pcbFile->QuadPart = pHandle->u.pTempFile->cbFile;
+                kwSandboxHandlePut(pHandle);
+                return TRUE;
+
+            case KWHANDLETYPE_OUTPUT_BUF:
+                /* do default */
+                break;
+
+            default:
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_INVALID_FUNCTION);
+                return INVALID_FILE_SIZE;
+        }
+        kwSandboxHandlePut(pHandle);
+    }
+
+    KWFS_LOG(("GetFileSizeEx(%p,)\n", hFile));
+    return GetFileSizeEx(hFile, pcbFile);
+}
+
+
+/** Kernel32 - CreateFileMappingW  */
+static HANDLE WINAPI kwSandbox_Kernel32_CreateFileMappingW(HANDLE hFile, LPSECURITY_ATTRIBUTES pSecAttrs,
+                                                           DWORD fProtect, DWORD dwMaximumSizeHigh,
+                                                           DWORD dwMaximumSizeLow, LPCWSTR pwszName)
+{
+    HANDLE      hMapping;
+    PKWHANDLE   pHandle = kwSandboxHandleGet(hFile);
+    if (pHandle != NULL)
+    {
+        switch (pHandle->enmType)
+        {
+            case KWHANDLETYPE_TEMP_FILE:
+            {
+                PKWFSTEMPFILE pTempFile = pHandle->u.pTempFile;
+                if (   (   fProtect == PAGE_READONLY
+                        || fProtect == PAGE_EXECUTE_READ)
+                    && dwMaximumSizeHigh == 0
+                    &&  (   dwMaximumSizeLow == 0
+                         || dwMaximumSizeLow == pTempFile->cbFile)
+                    && pwszName == NULL)
+                {
+                    hMapping = kwFsTempFileCreateHandle(pHandle->u.pTempFile, GENERIC_READ, K_TRUE /*fMapping*/);
+                    KWFS_LOG(("CreateFileMappingW(%p, %u) -> %p [temp]\n", hFile, fProtect, hMapping));
+                    kwSandboxHandlePut(pHandle);
+                    return hMapping;
+                }
+                kHlpAssertMsgFailed(("fProtect=%#x cb=%#x'%08x name=%p\n",
+                                     fProtect, dwMaximumSizeHigh, dwMaximumSizeLow, pwszName));
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_ACCESS_DENIED);
+                return INVALID_HANDLE_VALUE;
+            }
+
+            /* moc.exe benefits from this. */
+            case KWHANDLETYPE_FSOBJ_READ_CACHE:
+            {
+                PKFSWCACHEDFILE pCachedFile = pHandle->u.pCachedFile;
+                if (   (   fProtect == PAGE_READONLY
+                        || fProtect == PAGE_EXECUTE_READ)
+                    && dwMaximumSizeHigh == 0
+                    &&  (   dwMaximumSizeLow == 0
+                         || dwMaximumSizeLow == pCachedFile->cbCached)
+                    && pwszName == NULL)
+                {
+                    if (kwFsObjCacheCreateFileHandle(pCachedFile, GENERIC_READ, FALSE /*fInheritHandle*/,
+                                                     K_FALSE /*fIsFileHandle*/, &hMapping))
+                    { /* likely */ }
+                    else
+                        hMapping = NULL;
+                    KWFS_LOG(("CreateFileMappingW(%p, %u) -> %p [cached]\n", hFile, fProtect, hMapping));
+                    kwSandboxHandlePut(pHandle);
+                    return hMapping;
+                }
+
+                /* Do fallback (for .pch). */
+                kHlpAssertMsg(fProtect == PAGE_WRITECOPY,
+                              ("fProtect=%#x cb=%#x'%08x name=%p\n",
+                               fProtect, dwMaximumSizeHigh, dwMaximumSizeLow, pwszName));
+
+                hMapping = CreateFileMappingW(hFile, pSecAttrs, fProtect, dwMaximumSizeHigh, dwMaximumSizeLow, pwszName);
+                KWFS_LOG(("CreateFileMappingW(%p, %p, %#x, %#x, %#x, %p) -> %p [cached-fallback]\n",
+                          hFile, pSecAttrs, fProtect, dwMaximumSizeHigh, dwMaximumSizeLow, pwszName, hMapping));
+                kwSandboxHandlePut(pHandle);
+                return hMapping;
+            }
+
+            /** @todo read cached memory mapped files too for moc.   */
+        }
+        kwSandboxHandlePut(pHandle);
+    }
+
+    hMapping = CreateFileMappingW(hFile, pSecAttrs, fProtect, dwMaximumSizeHigh, dwMaximumSizeLow, pwszName);
+    KWFS_LOG(("CreateFileMappingW(%p, %p, %#x, %#x, %#x, %p) -> %p\n",
+              hFile, pSecAttrs, fProtect, dwMaximumSizeHigh, dwMaximumSizeLow, pwszName, hMapping));
+    return hMapping;
+}
+
+
+/** Kernel32 - MapViewOfFile  */
+static PVOID WINAPI kwSandbox_Kernel32_MapViewOfFile(HANDLE hSection, DWORD dwDesiredAccess,
+                                                     DWORD offFileHigh, DWORD offFileLow, SIZE_T cbToMap)
+{
+    PVOID       pvRet;
+    PKWHANDLE   pHandle = kwSandboxHandleGet(hSection);
+    if (pHandle != NULL)
+    {
+        KU32 idxMapping;
+
+        /*
+         * Ensure one free entry in the mapping tracking table first,
+         * since this is common to both temporary and cached files.
+         */
+        if (g_Sandbox.cMemMappings + 1 <= g_Sandbox.cMemMappingsAlloc)
+        { /* likely */ }
+        else
+        {
+            void *pvNew;
+            KU32 cNew = g_Sandbox.cMemMappingsAlloc;
+            if (cNew)
+                cNew *= 2;
+            else
+                cNew = 32;
+            pvNew = kHlpRealloc(g_Sandbox.paMemMappings, cNew * sizeof(g_Sandbox.paMemMappings[0]));
+            if (pvNew)
+                g_Sandbox.paMemMappings = (PKWMEMMAPPING)pvNew;
+            else
+            {
+                kwErrPrintf("Failed to grow paMemMappings from %#x to %#x!\n", g_Sandbox.cMemMappingsAlloc, cNew);
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+                return NULL;
+            }
+            g_Sandbox.cMemMappingsAlloc = cNew;
+        }
+
+        /*
+         * Type specific work.
+         */
+        switch (pHandle->enmType)
+        {
+            case KWHANDLETYPE_FSOBJ_READ_CACHE:
+            case KWHANDLETYPE_TEMP_FILE:
+            case KWHANDLETYPE_OUTPUT_BUF:
+            default:
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_INVALID_OPERATION);
+                return NULL;
+
+            case KWHANDLETYPE_TEMP_FILE_MAPPING:
+            {
+                PKWFSTEMPFILE pTempFile = pHandle->u.pTempFile;
+                if (   dwDesiredAccess == FILE_MAP_READ
+                    && offFileHigh == 0
+                    && offFileLow  == 0
+                    && (cbToMap == 0 || cbToMap == pTempFile->cbFile) )
+                {
+                    kHlpAssert(pTempFile->cMappings == 0 || pTempFile->cSegs == 1);
+                    if (pTempFile->cSegs != 1)
+                    {
+                        KU32    iSeg;
+                        KU32    cbLeft;
+                        KU32    cbAll = pTempFile->cbFile ? (KU32)K_ALIGN_Z(pTempFile->cbFile, 0x2000) : 0x1000;
+                        KU8    *pbAll = NULL;
+                        int rc = kHlpPageAlloc((void **)&pbAll, cbAll, KPROT_READWRITE, K_FALSE);
+                        if (rc != 0)
+                        {
+                            kHlpAssertFailed();
+                            SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+                            return NULL;
+                        }
+
+                        cbLeft = pTempFile->cbFile;
+                        for (iSeg = 0; iSeg < pTempFile->cSegs && cbLeft > 0; iSeg++)
+                        {
+                            KU32 cbToCopy = K_MIN(cbLeft, pTempFile->paSegs[iSeg].cbDataAlloc);
+                            kHlpMemCopy(&pbAll[pTempFile->paSegs[iSeg].offData], pTempFile->paSegs[iSeg].pbData, cbToCopy);
+                            cbLeft -= cbToCopy;
+                        }
+
+                        for (iSeg = 0; iSeg < pTempFile->cSegs; iSeg++)
+                        {
+                            kHlpPageFree(pTempFile->paSegs[iSeg].pbData, pTempFile->paSegs[iSeg].cbDataAlloc);
+                            pTempFile->paSegs[iSeg].pbData = NULL;
+                            pTempFile->paSegs[iSeg].cbDataAlloc = 0;
+                        }
+
+                        pTempFile->cSegs                 = 1;
+                        pTempFile->cbFileAllocated       = cbAll;
+                        pTempFile->paSegs[0].cbDataAlloc = cbAll;
+                        pTempFile->paSegs[0].pbData      = pbAll;
+                        pTempFile->paSegs[0].offData     = 0;
+                    }
+
+                    pTempFile->cMappings++;
+                    kHlpAssert(pTempFile->cMappings == 1);
+
+                    pvRet = pTempFile->paSegs[0].pbData;
+                    KWFS_LOG(("CreateFileMappingW(%p) -> %p [temp]\n", hSection, pvRet));
+                    break;
+                }
+
+                kHlpAssertMsgFailed(("dwDesiredAccess=%#x offFile=%#x'%08x cbToMap=%#x (cbFile=%#x)\n",
+                                     dwDesiredAccess, offFileHigh, offFileLow, cbToMap, pTempFile->cbFile));
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+                return NULL;
+            }
+
+            /*
+             * This is simple in comparison to the above temporary file code.
+             */
+            case KWHANDLETYPE_FSOBJ_READ_CACHE_MAPPING:
+            {
+                PKFSWCACHEDFILE pCachedFile = pHandle->u.pCachedFile;
+                if (   dwDesiredAccess == FILE_MAP_READ
+                    && offFileHigh == 0
+                    && offFileLow  == 0
+                    && (cbToMap == 0 || cbToMap == pCachedFile->cbCached) )
+                {
+                    pvRet = pCachedFile->pbCached;
+                    KWFS_LOG(("CreateFileMappingW(%p) -> %p [cached]\n", hSection, pvRet));
+                    break;
+                }
+                kHlpAssertMsgFailed(("dwDesiredAccess=%#x offFile=%#x'%08x cbToMap=%#x (cbFile=%#x)\n",
+                                     dwDesiredAccess, offFileHigh, offFileLow, cbToMap, pCachedFile->cbCached));
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+                return NULL;
+            }
+        }
+
+        /*
+         * Insert into the mapping tracking table.  This is common
+         * and we should only get here with a non-NULL pvRet.
+         *
+         * Note! We could look for duplicates and do ref counting, but it's
+         *       easier to just append for now.
+         */
+        kHlpAssert(pvRet != NULL);
+        idxMapping = g_Sandbox.cMemMappings;
+        kHlpAssert(idxMapping < g_Sandbox.cMemMappingsAlloc);
+
+        g_Sandbox.paMemMappings[idxMapping].cRefs         = 1;
+        g_Sandbox.paMemMappings[idxMapping].pvMapping     = pvRet;
+        g_Sandbox.paMemMappings[idxMapping].enmType       = pHandle->enmType;
+        g_Sandbox.paMemMappings[idxMapping].u.pCachedFile = pHandle->u.pCachedFile;
+        g_Sandbox.cMemMappings++;
+
+        kwSandboxHandlePut(pHandle);
+        return pvRet;
+    }
+
+    pvRet = MapViewOfFile(hSection, dwDesiredAccess, offFileHigh, offFileLow, cbToMap);
+    KWFS_LOG(("MapViewOfFile(%p, %#x, %#x, %#x, %#x) -> %p\n",
+              hSection, dwDesiredAccess, offFileHigh, offFileLow, cbToMap, pvRet));
+    return pvRet;
+}
+
+
+/** Kernel32 - MapViewOfFileEx  */
+static PVOID WINAPI kwSandbox_Kernel32_MapViewOfFileEx(HANDLE hSection, DWORD dwDesiredAccess,
+                                                       DWORD offFileHigh, DWORD offFileLow, SIZE_T cbToMap, PVOID pvMapAddr)
+{
+    PVOID       pvRet;
+    PKWHANDLE   pHandle = kwSandboxHandleGet(hSection);
+    if (pHandle != NULL)
+    {
+        switch (pHandle->enmType)
+        {
+            case KWHANDLETYPE_TEMP_FILE_MAPPING:
+                KWFS_LOG(("MapViewOfFileEx(%p, %#x, %#x, %#x, %#x, %p) - temporary file!\n",
+                          hSection, dwDesiredAccess, offFileHigh, offFileLow, cbToMap, pvMapAddr));
+                if (!pvMapAddr)
+                    pvRet = kwSandbox_Kernel32_MapViewOfFile(hSection, dwDesiredAccess, offFileHigh, offFileLow, cbToMap);
+                else
+                {
+                    kHlpAssertFailed();
+                    SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+                }
+                kwSandboxHandlePut(pHandle);
+                return NULL;
+
+            case KWHANDLETYPE_FSOBJ_READ_CACHE_MAPPING:
+                KWFS_LOG(("MapViewOfFileEx(%p, %#x, %#x, %#x, %#x, %p) - read cached file!\n",
+                          hSection, dwDesiredAccess, offFileHigh, offFileLow, cbToMap, pvMapAddr));
+                if (!pvMapAddr)
+                {
+                    pvRet = kwSandbox_Kernel32_MapViewOfFile(hSection, dwDesiredAccess, offFileHigh, offFileLow, cbToMap);
+                    kwSandboxHandlePut(pHandle);
+                    return pvRet;
+                }
+                /* We can use fallback here as the handle is an actual section handle. */
+                break;
+
+            case KWHANDLETYPE_FSOBJ_READ_CACHE:
+            case KWHANDLETYPE_TEMP_FILE:
+            case KWHANDLETYPE_OUTPUT_BUF:
+            default:
+                kHlpAssertFailed();
+                kwSandboxHandlePut(pHandle);
+                SetLastError(ERROR_INVALID_OPERATION);
+                return NULL;
+        }
+        kwSandboxHandlePut(pHandle);
+    }
+
+    pvRet = MapViewOfFileEx(hSection, dwDesiredAccess, offFileHigh, offFileLow, cbToMap, pvMapAddr);
+    KWFS_LOG(("MapViewOfFileEx(%p, %#x, %#x, %#x, %#x, %p) -> %p\n",
+              hSection, dwDesiredAccess, offFileHigh, offFileLow, cbToMap, pvMapAddr, pvRet));
+    return pvRet;
+
+}
+
+/** Kernel32 - UnmapViewOfFile  */
+static BOOL WINAPI kwSandbox_Kernel32_UnmapViewOfFile(LPCVOID pvBase)
+{
+    /*
+     * Consult the memory mapping tracker.
+     */
+    PKWMEMMAPPING   paMemMappings = g_Sandbox.paMemMappings;
+    KU32            idxMapping    = g_Sandbox.cMemMappings;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    while (idxMapping-- > 0)
+        if (paMemMappings[idxMapping].pvMapping == pvBase)
+        {
+            /* Type specific stuff. */
+            if (paMemMappings[idxMapping].enmType == KWHANDLETYPE_TEMP_FILE_MAPPING)
+            {
+                KWFS_LOG(("UnmapViewOfFile(%p) -> TRUE [temp]\n", pvBase));
+                paMemMappings[idxMapping].u.pTempFile->cMappings--;
+            }
+            else
+                KWFS_LOG(("UnmapViewOfFile(%p) -> TRUE [cached]\n", pvBase));
+
+            /* Deref and probably free it. */
+            if (--paMemMappings[idxMapping].cRefs == 0)
+            {
+                g_Sandbox.cMemMappings--;
+                if (idxMapping != g_Sandbox.cMemMappings)
+                    paMemMappings[idxMapping] = paMemMappings[g_Sandbox.cMemMappings];
+            }
+            return TRUE;
+        }
+
+    KWFS_LOG(("UnmapViewOfFile(%p)\n", pvBase));
+    return UnmapViewOfFile(pvBase);
+}
+
+/** @todo UnmapViewOfFileEx */
+
+#endif /* WITH_TEMP_MEMORY_FILES */
+
+
+/** Kernel32 - DuplicateHandle */
+static BOOL WINAPI kwSandbox_Kernel32_DuplicateHandle(HANDLE hSrcProc, HANDLE hSrc, HANDLE hDstProc, PHANDLE phNew,
+                                                      DWORD dwDesiredAccess, BOOL fInheritHandle, DWORD dwOptions)
+{
+    BOOL fRet;
+
+    /*
+     * We must catch our handles being duplicated.
+     */
+    if (hSrcProc == GetCurrentProcess())
+    {
+        PKWHANDLE pHandle = kwSandboxHandleGet(hSrc);
+        if (pHandle)
+        {
+            fRet = DuplicateHandle(hSrcProc, hSrc, hDstProc, phNew, dwDesiredAccess, fInheritHandle, dwOptions);
+            if (fRet)
+            {
+                if (kwSandboxHandleTableEnter(&g_Sandbox, pHandle, *phNew))
+                {
+                    pHandle->cRefs++;
+                    KWFS_LOG(("DuplicateHandle(%p, %p, %p, , %#x, %d, %#x) -> TRUE, %p [intercepted handle] enmType=%d cRef=%d\n",
+                              hSrcProc, hSrc, hDstProc, dwDesiredAccess, fInheritHandle, dwOptions, *phNew,
+                              pHandle->enmType, pHandle->cRefs));
+                }
+                else
+                {
+                    fRet = FALSE;
+                    SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+                    KWFS_LOG(("DuplicateHandle(%p, %p, %p, , %#x, %d, %#x) -> !FALSE!, %p [intercepted handle] enmType=%d\n",
+                              hSrcProc, hSrc, hDstProc, dwDesiredAccess, fInheritHandle, dwOptions, *phNew, pHandle->enmType));
+                }
+            }
+            else
+                KWFS_LOG(("DuplicateHandle(%p, %p, %p, , %#x, %d, %#x) -> FALSE [intercepted handle] enmType=%d\n",
+                          hSrcProc, hSrc, hDstProc, dwDesiredAccess, fInheritHandle, dwOptions, pHandle->enmType));
+            kwSandboxHandlePut(pHandle);
+            return fRet;
+        }
+    }
+
+    /*
+     * Not one of ours, just do what the caller asks and log it.
+     */
+    fRet = DuplicateHandle(hSrcProc, hSrc, hDstProc, phNew, dwDesiredAccess, fInheritHandle, dwOptions);
+    KWFS_LOG(("DuplicateHandle(%p, %p, %p, , %#x, %d, %#x) -> %d, %p\n", hSrcProc, hSrc, hDstProc, dwDesiredAccess,
+              fInheritHandle, dwOptions, fRet, *phNew));
+    return fRet;
+}
+
+
+/** Kernel32 - CloseHandle */
+static BOOL WINAPI kwSandbox_Kernel32_CloseHandle(HANDLE hObject)
+{
+    BOOL        fRet;
+    KUPTR const idxHandle = KW_HANDLE_TO_INDEX(hObject);
+    PKWHANDLE   pHandle   = kwSandboxHandleGet(hObject);
+    if (pHandle)
+    {
+        /* Prevent the closing of the standard output and error handles. */
+        if (   pHandle->enmType != KWHANDLETYPE_OUTPUT_BUF
+            || idxHandle != KW_HANDLE_TO_INDEX(pHandle->hHandle) /* why this?!? */)
+        {
+            fRet = CloseHandle(hObject);
+            if (fRet)
+            {
+                EnterCriticalSection(&g_Sandbox.HandlesLock);
+                pHandle = g_Sandbox.papHandles[idxHandle];
+                g_Sandbox.papHandles[idxHandle] = NULL;
+                g_Sandbox.cActiveHandles--;
+                kHlpAssert(g_Sandbox.cActiveHandles >= g_Sandbox.cFixedHandles);
+                if (--pHandle->cRefs == 0)
+                {
+#ifdef WITH_TEMP_MEMORY_FILES
+                    if (pHandle->enmType == KWHANDLETYPE_TEMP_FILE)
+                    {
+                        kHlpAssert(pHandle->u.pTempFile->cActiveHandles > 0);
+                        pHandle->u.pTempFile->cActiveHandles--;
+                    }
+#endif
+                    kHlpFree(pHandle);
+                    KWFS_LOG(("CloseHandle(%p) -> TRUE [intercepted handle, freed]\n", hObject));
+                }
+                else
+                {
+                    KWFS_LOG(("CloseHandle(%p) -> TRUE [intercepted handle, not freed]\n", hObject));
+                    kwSandboxHandlePut(pHandle);
+                }
+                LeaveCriticalSection(&g_Sandbox.HandlesLock);
+                return fRet;
+            }
+            KWFS_LOG(("CloseHandle(%p) -> FALSE [intercepted handle] err=%u!\n", hObject, GetLastError()));
+        }
+        else
+        {
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+            KWFS_LOG(("CloseHandle(%p) -> TRUE [intercepted handle] Ignored closing of std%s!\n",
+                      hObject, hObject == g_Sandbox.StdErr.hOutput ? "err" : "out"));
+#else
+            KWFS_LOG(("CloseHandle(%p) -> TRUE [intercepted handle] Ignored closing of stdXXX!\n", hObject));
+#endif
+            fRet = TRUE;
+        }
+        kwSandboxHandlePut(pHandle);
+        return fRet;
+    }
+
+    fRet = CloseHandle(hObject);
+    KWFS_LOG(("CloseHandle(%p) -> %d\n", hObject, fRet));
+    return fRet;
+}
+
+
+/** Kernel32 - GetFileAttributesA. */
+static DWORD WINAPI kwSandbox_Kernel32_GetFileAttributesA(LPCSTR pszFilename)
+{
+    DWORD       fRet;
+    const char *pszExt = kHlpGetExt(pszFilename);
+    if (kwFsIsCacheableExtensionA(pszExt, K_TRUE /*fAttrQuery*/))
+    {
+        KFSLOOKUPERROR enmError;
+        PKFSOBJ pFsObj;
+        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+        pFsObj = kFsCacheLookupNoMissingA(g_pFsCache, pszFilename, &enmError);
+        if (pFsObj)
+        {
+            kHlpAssert(pFsObj->fHaveStats);
+            fRet = pFsObj->Stats.st_attribs;
+            kFsCacheObjRelease(g_pFsCache, pFsObj);
+        }
+        else
+        {
+            SetLastError(kwFsLookupErrorToWindowsError(enmError));
+            fRet = INVALID_FILE_ATTRIBUTES;
+        }
+
+        KWFS_LOG(("GetFileAttributesA(%s) -> %#x [cached]\n", pszFilename, fRet));
+        return fRet;
+    }
+
+    fRet = GetFileAttributesA(pszFilename);
+    KWFS_LOG(("GetFileAttributesA(%s) -> %#x\n", pszFilename, fRet));
+    return fRet;
+}
+
+
+/** Kernel32 - GetFileAttributesW. */
+static DWORD WINAPI kwSandbox_Kernel32_GetFileAttributesW(LPCWSTR pwszFilename)
+{
+    DWORD fRet;
+    if (kwFsIsCacheablePathExtensionW(pwszFilename, K_TRUE /*fAttrQuery*/))
+    {
+        KFSLOOKUPERROR enmError;
+        PKFSOBJ pFsObj;
+        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+        pFsObj = kFsCacheLookupNoMissingW(g_pFsCache, pwszFilename, &enmError);
+        if (pFsObj)
+        {
+            kHlpAssert(pFsObj->fHaveStats);
+            fRet = pFsObj->Stats.st_attribs;
+            kFsCacheObjRelease(g_pFsCache, pFsObj);
+        }
+        else
+        {
+            SetLastError(kwFsLookupErrorToWindowsError(enmError));
+            fRet = INVALID_FILE_ATTRIBUTES;
+        }
+#ifndef NDEBUG
+        {
+            DWORD fCheck = GetFileAttributesW(pwszFilename);
+            kHlpAssertMsg(fCheck == fRet, ("fCheck=%x vs fRet=%#x diff=%#x; %ls\n", fCheck, fRet, fCheck ^ fRet, pwszFilename));
+        }
+#endif
+        KWFS_LOG(("GetFileAttributesW(%ls) -> %#x [cached]\n", pwszFilename, fRet));
+        return fRet;
+    }
+
+    fRet = GetFileAttributesW(pwszFilename);
+    KWFS_LOG(("GetFileAttributesW(%ls) -> %#x\n", pwszFilename, fRet));
+    return fRet;
+}
+
+
+/** Kernel32 - GetFileAttributesExA. */
+static BOOL WINAPI kwSandbox_Kernel32_GetFileAttributesExA(LPCSTR pszFilename, GET_FILEEX_INFO_LEVELS enmLevel,
+                                                           WIN32_FILE_ATTRIBUTE_DATA *pData)
+{
+    BOOL fRet;
+    const char *pszExt = kHlpGetExt(pszFilename);
+    if (kwFsIsCacheableExtensionA(pszExt, K_TRUE /*fAttrQuery*/))
+    {
+        KFSLOOKUPERROR enmError;
+        PKFSOBJ pFsObj;
+        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+        pFsObj = kFsCacheLookupNoMissingA(g_pFsCache, pszFilename, &enmError);
+        if (pFsObj)
+        {
+            kHlpAssert(pFsObj->fHaveStats);
+            if (enmLevel == GetFileExInfoStandard)
+            {
+                pData->dwFileAttributes              = pFsObj->Stats.st_attribs;
+                pData->nFileSizeHigh                 = (KU64)pFsObj->Stats.st_size >> 32;
+                pData->nFileSizeLow                  = (KU32)pFsObj->Stats.st_size;
+                *(KU64 *)&pData->ftCreationTime   = birdNtTimeFromTimeSpec(&pFsObj->Stats.st_birthtim);
+                *(KU64 *)&pData->ftLastAccessTime = birdNtTimeFromTimeSpec(&pFsObj->Stats.st_atim);
+                *(KU64 *)&pData->ftLastWriteTime  = birdNtTimeFromTimeSpec(&pFsObj->Stats.st_mtim);
+                kFsCacheObjRelease(g_pFsCache, pFsObj);
+                fRet = TRUE;
+            }
+            else
+            {
+                kFsCacheObjRelease(g_pFsCache, pFsObj);
+                fRet = GetFileAttributesExA(pszFilename, enmLevel, pData);
+            }
+        }
+        else
+        {
+            SetLastError(kwFsLookupErrorToWindowsError(enmError));
+            fRet = FALSE;
+        }
+
+#ifdef K_STRICT
+        {
+            WIN32_FILE_ATTRIBUTE_DATA CheckData = { 0 };
+            DWORD const dwErrSaved = GetLastError();
+            BOOL const fRetCheck = GetFileAttributesExA(pszFilename, enmLevel, &CheckData);
+            kHlpAssertMsg(fRet == fRetCheck, ("fRet=%d fRetCheck=%d; %s\n", fRet, fRetCheck, pszFilename));
+            if (fRetCheck && fRet)
+            {
+# define ASSERT_FS_FIELD_EQUAL_A(pResult, pExpected, pszFilename, Field, szFmt) \
+    kHlpAssertMsg((pResult)->Field == (pExpected)->Field, (#Field ": " szFmt " , expected " szFmt "; %s\n", (pResult)->Field, (pExpected)->Field, pszFilename))
+                ASSERT_FS_FIELD_EQUAL_A(pData, &CheckData, pszFilename, dwFileAttributes, "%#x");
+                ASSERT_FS_FIELD_EQUAL_A(pData, &CheckData, pszFilename, nFileSizeHigh, "%#x");
+                ASSERT_FS_FIELD_EQUAL_A(pData, &CheckData, pszFilename, nFileSizeLow, "%#x");
+                ASSERT_FS_FIELD_EQUAL_A(pData, &CheckData, pszFilename, ftCreationTime.dwHighDateTime, "%#x");
+                ASSERT_FS_FIELD_EQUAL_A(pData, &CheckData, pszFilename, ftCreationTime.dwLowDateTime, "%#x");
+                ASSERT_FS_FIELD_EQUAL_A(pData, &CheckData, pszFilename, ftLastWriteTime.dwHighDateTime, "%#x");
+                ASSERT_FS_FIELD_EQUAL_A(pData, &CheckData, pszFilename, ftLastWriteTime.dwLowDateTime, "%#x");
+            }
+            else
+                kHlpAssertMsg(dwErrSaved == GetLastError(), ("%u, expected %u; %s\n", dwErrSaved, GetLastError(), pszFilename));
+            SetLastError(dwErrSaved);
+        }
+#endif
+        KWFS_LOG(("GetFileAttributesA(%s,%d,) -> %d [cached]\n", pszFilename, enmLevel, fRet));
+        return fRet;
+    }
+
+    fRet = GetFileAttributesExA(pszFilename, enmLevel, pData);
+    KWFS_LOG(("GetFileAttributesExA(%s,%d,) -> %d\n", pszFilename, enmLevel, fRet));
+    return fRet;
+}
+
+
+/** Kernel32 - GetFileAttributesExW. */
+static BOOL WINAPI kwSandbox_Kernel32_GetFileAttributesExW(LPCWSTR pwszFilename, GET_FILEEX_INFO_LEVELS enmLevel,
+                                                           WIN32_FILE_ATTRIBUTE_DATA *pData)
+{
+    BOOL fRet;
+    if (kwFsIsCacheablePathExtensionW(pwszFilename, K_TRUE /*fAttrQuery*/))
+    {
+        KFSLOOKUPERROR enmError;
+        PKFSOBJ pFsObj;
+        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+        pFsObj = kFsCacheLookupNoMissingW(g_pFsCache, pwszFilename, &enmError);
+        if (pFsObj)
+        {
+            kHlpAssert(pFsObj->fHaveStats);
+            if (enmLevel == GetFileExInfoStandard)
+            {
+                pData->dwFileAttributes              = pFsObj->Stats.st_attribs;
+                pData->nFileSizeHigh                 = (KU64)pFsObj->Stats.st_size >> 32;
+                pData->nFileSizeLow                  = (KU32)pFsObj->Stats.st_size;
+                *(KU64 *)&pData->ftCreationTime   = birdNtTimeFromTimeSpec(&pFsObj->Stats.st_birthtim);
+                *(KU64 *)&pData->ftLastAccessTime = birdNtTimeFromTimeSpec(&pFsObj->Stats.st_atim);
+                *(KU64 *)&pData->ftLastWriteTime  = birdNtTimeFromTimeSpec(&pFsObj->Stats.st_mtim);
+                kFsCacheObjRelease(g_pFsCache, pFsObj);
+                fRet = TRUE;
+            }
+            else
+            {
+                kFsCacheObjRelease(g_pFsCache, pFsObj);
+                fRet = GetFileAttributesExW(pwszFilename, enmLevel, pData);
+            }
+        }
+        else
+        {
+            SetLastError(kwFsLookupErrorToWindowsError(enmError));
+            fRet = FALSE;
+        }
+
+#ifdef K_STRICT
+        {
+            WIN32_FILE_ATTRIBUTE_DATA CheckData = { 0 };
+            DWORD const dwErrSaved = GetLastError();
+            BOOL const fRetCheck = GetFileAttributesExW(pwszFilename, enmLevel, &CheckData);
+            kHlpAssertMsg(fRet == fRetCheck, ("fRet=%d fRetCheck=%d; %ls\n", fRet, fRetCheck, pwszFilename));
+            if (fRetCheck && fRet)
+            {
+# define ASSERT_FS_FIELD_EQUAL_W(pResult, pExpected, pszFilename, Field, szFmt) \
+    kHlpAssertMsg((pResult)->Field == (pExpected)->Field, (#Field ": " szFmt " , expected " szFmt "; %ls\n", (pResult)->Field, (pExpected)->Field, pwszFilename))
+                ASSERT_FS_FIELD_EQUAL_W(pData, &CheckData, pwszFilename, dwFileAttributes, "%#x");
+                ASSERT_FS_FIELD_EQUAL_W(pData, &CheckData, pwszFilename, nFileSizeHigh, "%#x");
+                ASSERT_FS_FIELD_EQUAL_W(pData, &CheckData, pwszFilename, nFileSizeLow, "%#x");
+                ASSERT_FS_FIELD_EQUAL_W(pData, &CheckData, pwszFilename, ftCreationTime.dwHighDateTime, "%#x");
+                ASSERT_FS_FIELD_EQUAL_W(pData, &CheckData, pwszFilename, ftCreationTime.dwLowDateTime, "%#x");
+                ASSERT_FS_FIELD_EQUAL_W(pData, &CheckData, pwszFilename, ftLastWriteTime.dwHighDateTime, "%#x");
+                ASSERT_FS_FIELD_EQUAL_W(pData, &CheckData, pwszFilename, ftLastWriteTime.dwLowDateTime, "%#x");
+            }
+            else
+                kHlpAssertMsg(dwErrSaved == GetLastError(), ("%u, expected %u; %ls\n", dwErrSaved, GetLastError(), pwszFilename));
+            SetLastError(dwErrSaved);
+        }
+#endif
+        KWFS_LOG(("GetFileAttributesExW(%ls,%d,) -> %d [cached]\n", pwszFilename, enmLevel, fRet));
+        return fRet;
+    }
+
+    fRet = GetFileAttributesExW(pwszFilename, enmLevel, pData);
+    KWFS_LOG(("GetFileAttributesExW(%ls,%d,) -> %d\n", pwszFilename, enmLevel, fRet));
+    return fRet;
+}
+
+
+/** Kernel32 - GetShortPathNameW - c1[xx].dll of VS2010 does this to the
+ * directory containing each include file.  We cache the result to speed
+ * things up a little. */
+static DWORD WINAPI kwSandbox_Kernel32_GetShortPathNameW(LPCWSTR pwszLongPath, LPWSTR pwszShortPath, DWORD cwcShortPath)
+{
+    DWORD cwcRet;
+    if (kwFsIsCacheablePathExtensionW(pwszLongPath, K_TRUE /*fAttrQuery*/))
+    {
+        KFSLOOKUPERROR enmError;
+        PKFSOBJ pObj;
+        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+        pObj = kFsCacheLookupW(g_pFsCache, pwszLongPath, &enmError);
+        if (pObj)
+        {
+            if (pObj->bObjType != KFSOBJ_TYPE_MISSING)
+            {
+                if (kFsCacheObjGetFullShortPathW(pObj, pwszShortPath, cwcShortPath, '\\'))
+                {
+                    cwcRet = (DWORD)kwUtf16Len(pwszShortPath);
+
+                    /* Should preserve trailing slash on directory paths. */
+                    if (pObj->bObjType == KFSOBJ_TYPE_DIR)
+                    {
+                        if (   cwcRet + 1 < cwcShortPath
+                            && pwszShortPath[cwcRet - 1] != '\\')
+                        {
+                            KSIZE cwcIn = kwUtf16Len(pwszLongPath);
+                            if (   cwcIn > 0
+                                && (pwszLongPath[cwcIn - 1] == '\\' || pwszLongPath[cwcIn - 1] == '/') )
+                            {
+                                pwszShortPath[cwcRet++] = '\\';
+                                pwszShortPath[cwcRet]   = '\0';
+                            }
+                        }
+                    }
+
+                    KWFS_LOG(("GetShortPathNameW(%ls) -> '%*.*ls' & %#x [cached]\n",
+                              pwszLongPath, K_MIN(cwcShortPath, cwcRet), K_MIN(cwcShortPath, cwcRet), pwszShortPath, cwcRet));
+                    kFsCacheObjRelease(g_pFsCache, pObj);
+                    return cwcRet;
+                }
+
+                /* fall back for complicated cases. */
+            }
+            kFsCacheObjRelease(g_pFsCache, pObj);
+        }
+    }
+    cwcRet = GetShortPathNameW(pwszLongPath, pwszShortPath, cwcShortPath);
+    KWFS_LOG(("GetShortPathNameW(%ls) -> '%*.*ls' & %#x\n",
+              pwszLongPath, K_MIN(cwcShortPath, cwcRet), K_MIN(cwcShortPath, cwcRet), pwszShortPath, cwcRet));
+    return cwcRet;
+}
+
+
+#ifdef WITH_TEMP_MEMORY_FILES
+/** Kernel32 - DeleteFileW
+ * Skip deleting the in-memory files. */
+static BOOL WINAPI kwSandbox_Kernel32_DeleteFileW(LPCWSTR pwszFilename)
+{
+    BOOL fRc;
+    if (   g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_CL
+        && kwFsIsClTempFileW(pwszFilename))
+    {
+        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+        KWFS_LOG(("DeleteFileW(%s) -> TRUE [temp]\n", pwszFilename));
+        fRc = TRUE;
+    }
+    else
+    {
+        fRc = DeleteFileW(pwszFilename);
+        KWFS_LOG(("DeleteFileW(%s) -> %d (%d)\n", pwszFilename, fRc, GetLastError()));
+    }
+    return fRc;
+}
+#endif /* WITH_TEMP_MEMORY_FILES */
+
+
+
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+
+/*
+ *
+ * Console output buffering.
+ * Console output buffering.
+ * Console output buffering.
+ *
+ */
+
+
+/**
+ * Write a wide char string to the console.
+ *
+ * @param   pSandbox            The sandbox which output buffer to flush.
+ */
+static void kwSandboxConsoleWriteIt(PKWSANDBOX pSandbox, wchar_t const *pwcBuf, KU32 cwcToWrite)
+{
+    if (cwcToWrite > 0)
+    {
+        DWORD cwcWritten = 0;
+        if (WriteConsoleW(pSandbox->Combined.hOutput, pwcBuf, cwcToWrite, &cwcWritten, NULL))
+        {
+            if (cwcWritten == cwcToWrite)
+            { /* likely */ }
+            else
+            {
+                DWORD off = 0;
+                do
+                {
+                    off += cwcWritten;
+                    cwcWritten = 0;
+                } while (   off < cwcToWrite
+                         && WriteConsoleW(pSandbox->Combined.hOutput, &pwcBuf[off], cwcToWrite - off, &cwcWritten, NULL));
+                kHlpAssert(off == cwcWritten);
+            }
+        }
+        else
+            kHlpAssertFailed();
+        pSandbox->Combined.cFlushes++;
+    }
+}
+
+
+/**
+ * Flushes the combined console output buffer.
+ *
+ * @param   pSandbox            The sandbox which output buffer to flush.
+ */
+static void kwSandboxConsoleFlushCombined(PKWSANDBOX pSandbox)
+{
+    if (pSandbox->Combined.cwcBuf > 0)
+    {
+        KWOUT_LOG(("kwSandboxConsoleFlushCombined: %u wchars\n", pSandbox->Combined.cwcBuf));
+        kwSandboxConsoleWriteIt(pSandbox, pSandbox->Combined.wszBuf, pSandbox->Combined.cwcBuf);
+        pSandbox->Combined.cwcBuf = 0;
+    }
+}
+
+
+/**
+ * For handling combined buffer overflow cases line by line.
+ *
+ * @param   pSandbox            The sandbox.
+ * @param   pwcBuf              What to add to the combined buffer.  Usually a
+ *                              line, unless we're really low on buffer space.
+ * @param   cwcBuf              The length of what to add.
+ * @param   fBrokenLine         Whether this is a broken line.
+ */
+static void kwSandboxConsoleAddToCombined(PKWSANDBOX pSandbox, wchar_t const *pwcBuf, KU32 cwcBuf, KBOOL fBrokenLine)
+{
+    if (fBrokenLine)
+        kwSandboxConsoleFlushCombined(pSandbox);
+    if (pSandbox->Combined.cwcBuf + cwcBuf > K_ELEMENTS(pSandbox->Combined.wszBuf))
+    {
+        kwSandboxConsoleFlushCombined(pSandbox);
+        kwSandboxConsoleWriteIt(pSandbox, pwcBuf, cwcBuf);
+    }
+    else
+    {
+        kHlpMemCopy(&pSandbox->Combined.wszBuf[pSandbox->Combined.cwcBuf], pwcBuf, cwcBuf * sizeof(wchar_t));
+        pSandbox->Combined.cwcBuf += cwcBuf;
+    }
+}
+
+
+/**
+ * Called to final flush a line buffer via the combined buffer (if applicable).
+ *
+ * @param   pSandbox            The sandbox.
+ * @param   pLineBuf            The line buffer.
+ * @param   pszName             The line buffer name (for logging)
+ */
+static void kwSandboxConsoleFinalFlushLineBuf(PKWSANDBOX pSandbox, PKWOUTPUTSTREAMBUF pLineBuf, const char *pszName)
+{
+    if (pLineBuf->fIsConsole)
+    {
+        if (pLineBuf->u.Con.cwcBuf > 0)
+        {
+            KWOUT_LOG(("kwSandboxConsoleFinalFlushLineBuf: %s: %u wchars\n", pszName, pLineBuf->u.Con.cwcBuf));
+
+            if (pLineBuf->u.Con.cwcBuf < pLineBuf->u.Con.cwcBufAlloc)
+            {
+                pLineBuf->u.Con.pwcBuf[pLineBuf->u.Con.cwcBuf++] = '\n';
+                kwSandboxConsoleAddToCombined(pSandbox, pLineBuf->u.Con.pwcBuf, pLineBuf->u.Con.cwcBuf, K_FALSE /*fBrokenLine*/);
+            }
+            else
+            {
+                kwSandboxConsoleAddToCombined(pSandbox, pLineBuf->u.Con.pwcBuf, pLineBuf->u.Con.cwcBuf, K_TRUE /*fBrokenLine*/);
+                kwSandboxConsoleAddToCombined(pSandbox, L"\n", 1, K_TRUE /*fBrokenLine*/);
+            }
+            pLineBuf->u.Con.cwcBuf = 0;
+        }
+    }
+#ifdef WITH_STD_OUT_ERR_BUFFERING
+    else if (pLineBuf->u.Fully.cchBuf > 0)
+    {
+        KWOUT_LOG(("kwSandboxConsoleFinalFlushLineBuf: %s: %u bytes\n", pszName, pLineBuf->u.Fully.cchBuf));
+
+        kwSandboxOutBufWriteIt(pLineBuf->hBackup, pLineBuf->u.Fully.pchBuf, pLineBuf->u.Fully.cchBuf);
+        pLineBuf->u.Fully.cchBuf = 0;
+    }
+#endif
+}
+
+
+/**
+ * Called at the end of sandboxed execution to flush both stream buffers.
+ *
+ * @param   pSandbox            The sandbox.
+ */
+static void kwSandboxConsoleFlushAll(PKWSANDBOX pSandbox)
+{
+    /*
+     * First do the cl.exe source file supression trick, if applicable.
+     * The output ends up on CONOUT$ if either StdOut or StdErr is a console
+     * handle.
+     */
+    if (   pSandbox->pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_CL
+        && pSandbox->Combined.cFlushes == 0)
+    {
+        if (   pSandbox->StdOut.fIsConsole
+            || pSandbox->StdErr.fIsConsole)
+        {
+            if (   pSandbox->Combined.cwcBuf >= 3
+                && (pSandbox->StdOut.fIsConsole ? pSandbox->StdOut.u.Con.cwcBuf : pSandbox->StdOut.u.Fully.cchBuf) == 0
+                && (pSandbox->StdErr.fIsConsole ? pSandbox->StdErr.u.Con.cwcBuf : pSandbox->StdErr.u.Fully.cchBuf) == 0 )
+            {
+                KI32    off = pSandbox->Combined.cwcBuf - 1;
+                if (pSandbox->Combined.wszBuf[off] == '\n')
+                {
+                    KBOOL fOk = K_TRUE;
+                    while (off-- > 0)
+                    {
+                        wchar_t const wc = pSandbox->Combined.wszBuf[off];
+                        if (iswalnum(wc) || wc == '.' || wc == ' ' || wc == '_' || wc == '-')
+                        { /* likely */ }
+                        else
+                        {
+                            fOk = K_FALSE;
+                            break;
+                        }
+                    }
+                    if (fOk)
+                    {
+                        KWOUT_LOG(("kwSandboxConsoleFlushAll: Dropping '%*.*ls in combined console buffer\n",
+                                   pSandbox->Combined.cwcBuf, pSandbox->Combined.cwcBuf, pSandbox->Combined.wszBuf));
+                        pSandbox->Combined.cwcBuf = 0;
+                        return;
+                    }
+                }
+                KWOUT_LOG(("kwSandboxConsoleFlushAll: Unable to drop '%*.*ls in combined console buffer\n",
+                           pSandbox->Combined.cwcBuf, pSandbox->Combined.cwcBuf, pSandbox->Combined.wszBuf));
+            }
+        }
+#ifdef WITH_STD_OUT_ERR_BUFFERING
+        /*
+         * Otherwise, it goes to standard output (redirected).
+         */
+        else if (   pSandbox->StdErr.u.Fully.cchBuf == 0
+                 && pSandbox->StdOut.u.Fully.cchBuf >= 3)
+        {
+            char const *pchBuf = pSandbox->StdOut.u.Fully.pchBuf;
+            KI32        off    = pSandbox->StdOut.u.Fully.cchBuf - 1;
+            kHlpAssert(pSandbox->Combined.cFlushes == 0 && pSandbox->Combined.cwcBuf == 0); /* unused! */
+
+            if (pchBuf[off] == '\n')
+            {
+                KBOOL fOk = K_TRUE;
+                if (pchBuf[off - 1] == '\r')
+                    off--;
+                while (off-- > 0)
+                {
+                    char const ch = pchBuf[off];
+                    if (isalnum(ch) || ch == '.' || ch == ' ' || ch == '_' || ch == '-')
+                    { /* likely */ }
+                    else
+                    {
+                        fOk = K_FALSE;
+                        break;
+                    }
+                }
+                if (fOk)
+                {
+                    KWOUT_LOG(("kwSandboxConsoleFlushAll: Dropping '%*.*s in stdout buffer\n",
+                               pSandbox->StdOut.u.Fully.cchBuf, pSandbox->StdOut.u.Fully.cchBuf, pchBuf));
+                    pSandbox->StdOut.u.Fully.cchBuf = 0;
+                    return;
+                }
+            }
+            KWOUT_LOG(("kwSandboxConsoleFlushAll: Unable to drop '%*.*s in stdout buffer\n",
+                       pSandbox->StdOut.u.Fully.cchBuf, pSandbox->StdOut.u.Fully.cchBuf, pchBuf));
+        }
+#endif
+    }
+
+    /*
+     * Flush the two line buffer, then the combined buffer.
+     */
+    kwSandboxConsoleFinalFlushLineBuf(pSandbox, &pSandbox->StdErr, "StdErr");
+    kwSandboxConsoleFinalFlushLineBuf(pSandbox, &pSandbox->StdOut, "StdOut");
+    kwSandboxConsoleFlushCombined(pSandbox);
+}
+
+
+/**
+ * Writes a string to the given output stream.
+ *
+ * @param   pSandbox            The sandbox.
+ * @param   pLineBuf            The line buffer for the output stream.
+ * @param   pwcBuffer           The buffer to write.
+ * @param   cwcToWrite          The number of wchar_t's in the buffer.
+ */
+static void kwSandboxConsoleWriteW(PKWSANDBOX pSandbox, PKWOUTPUTSTREAMBUF pLineBuf, wchar_t const *pwcBuffer, KU32 cwcToWrite)
+{
+    kHlpAssert(pLineBuf->fIsConsole);
+    if (cwcToWrite > 0)
+    {
+        /*
+         * First, find the start of the last incomplete line so we can figure
+         * out how much line buffering we need to do.
+         */
+        KU32 cchLastIncompleteLine;
+        KU32 offLastIncompleteLine = cwcToWrite;
+        while (   offLastIncompleteLine > 0
+               && pwcBuffer[offLastIncompleteLine - 1] != '\n')
+            offLastIncompleteLine--;
+        cchLastIncompleteLine = cwcToWrite - offLastIncompleteLine;
+
+        /* Was there anything to line buffer? */
+        if (offLastIncompleteLine < cwcToWrite)
+        {
+            /* Need to grow the line buffer? */
+            KU32 cwcNeeded = offLastIncompleteLine == 0
+                           ? pLineBuf->u.Con.cwcBuf + cchLastIncompleteLine /* incomplete line, append to line buffer */
+                           : cchLastIncompleteLine; /* Only the final incomplete line (if any) goes to the line buffer. */
+            if (cwcNeeded > pLineBuf->u.Con.cwcBufAlloc)
+            {
+                void *pvNew;
+                KU32  cwcNew = !pLineBuf->u.Con.cwcBufAlloc ? 1024 : pLineBuf->u.Con.cwcBufAlloc * 2;
+                while (cwcNew < cwcNeeded)
+                    cwcNew *= 2;
+                pvNew = kHlpRealloc(pLineBuf->u.Con.pwcBuf, cwcNew * sizeof(wchar_t));
+                if (pvNew)
+                {
+                    pLineBuf->u.Con.pwcBuf = (wchar_t *)pvNew;
+                    pLineBuf->u.Con.cwcBufAlloc = cwcNew;
+                }
+                else
+                {
+                    pvNew = kHlpRealloc(pLineBuf->u.Con.pwcBuf, cwcNeeded * sizeof(wchar_t));
+                    if (pvNew)
+                    {
+                        pLineBuf->u.Con.pwcBuf = (wchar_t *)pvNew;
+                        pLineBuf->u.Con.cwcBufAlloc = cwcNeeded;
+                    }
+                    else
+                    {
+                        /* This isn't perfect, but it will have to do for now. */
+                        if (pLineBuf->u.Con.cwcBuf > 0)
+                        {
+                            kwSandboxConsoleAddToCombined(pSandbox, pLineBuf->u.Con.pwcBuf, pLineBuf->u.Con.cwcBuf,
+                                                          K_TRUE /*fBrokenLine*/);
+                            pLineBuf->u.Con.cwcBuf = 0;
+                        }
+                        kwSandboxConsoleAddToCombined(pSandbox, pwcBuffer, cwcToWrite, K_TRUE /*fBrokenLine*/);
+                        return;
+                    }
+                }
+            }
+
+            /*
+             * Handle the case where we only add to the line buffer.
+             */
+            if (offLastIncompleteLine == 0)
+            {
+                kHlpMemCopy(&pLineBuf->u.Con.pwcBuf[pLineBuf->u.Con.cwcBuf], pwcBuffer, cwcToWrite * sizeof(wchar_t));
+                pLineBuf->u.Con.cwcBuf += cwcToWrite;
+                return;
+            }
+        }
+
+        /*
+         * If there is sufficient combined buffer to handle this request, this is rather simple.
+         */
+        kHlpAssert(pSandbox->Combined.cwcBuf <= K_ELEMENTS(pSandbox->Combined.wszBuf));
+        if (pSandbox->Combined.cwcBuf + pLineBuf->u.Con.cwcBuf + offLastIncompleteLine <= K_ELEMENTS(pSandbox->Combined.wszBuf))
+        {
+            if (pLineBuf->u.Con.cwcBuf > 0)
+            {
+                kHlpMemCopy(&pSandbox->Combined.wszBuf[pSandbox->Combined.cwcBuf],
+                            pLineBuf->u.Con.pwcBuf, pLineBuf->u.Con.cwcBuf * sizeof(wchar_t));
+                pSandbox->Combined.cwcBuf += pLineBuf->u.Con.cwcBuf;
+                pLineBuf->u.Con.cwcBuf = 0;
+            }
+
+            kHlpMemCopy(&pSandbox->Combined.wszBuf[pSandbox->Combined.cwcBuf],
+                        pwcBuffer, offLastIncompleteLine * sizeof(wchar_t));
+            pSandbox->Combined.cwcBuf += offLastIncompleteLine;
+        }
+        else
+        {
+            /*
+             * Do line-by-line processing of the input, flusing the combined buffer
+             * when it becomes necessary.  We may have to write lines
+             */
+            KU32 off = 0;
+            KU32 offNextLine = 0;
+
+            /* If there are buffered chars, we handle the first line outside the
+               main loop.  We must try our best outputting it as a complete line. */
+            if (pLineBuf->u.Con.cwcBuf > 0)
+            {
+                while (offNextLine < cwcToWrite && pwcBuffer[offNextLine] != '\n')
+                    offNextLine++;
+                offNextLine++;
+                kHlpAssert(offNextLine <= offLastIncompleteLine);
+
+                if (pSandbox->Combined.cwcBuf + pLineBuf->u.Con.cwcBuf + offNextLine <= K_ELEMENTS(pSandbox->Combined.wszBuf))
+                {
+                    kHlpMemCopy(&pSandbox->Combined.wszBuf[pSandbox->Combined.cwcBuf],
+                                pLineBuf->u.Con.pwcBuf, pLineBuf->u.Con.cwcBuf * sizeof(wchar_t));
+                    pSandbox->Combined.cwcBuf += pLineBuf->u.Con.cwcBuf;
+                    pLineBuf->u.Con.cwcBuf = 0;
+
+                    kHlpMemCopy(&pSandbox->Combined.wszBuf[pSandbox->Combined.cwcBuf], pwcBuffer, offNextLine * sizeof(wchar_t));
+                    pSandbox->Combined.cwcBuf += offNextLine;
+                }
+                else
+                {
+                    KU32 cwcLeft = pLineBuf->u.Con.cwcBufAlloc - pLineBuf->u.Con.cwcBuf;
+                    if (cwcLeft > 0)
+                    {
+                        KU32 cwcCopy = K_MIN(cwcLeft, offNextLine);
+                        kHlpMemCopy(&pLineBuf->u.Con.pwcBuf[pLineBuf->u.Con.cwcBuf], pwcBuffer, cwcCopy * sizeof(wchar_t));
+                        pLineBuf->u.Con.cwcBuf += cwcCopy;
+                        off += cwcCopy;
+                    }
+                    if (pLineBuf->u.Con.cwcBuf > 0)
+                    {
+                        kwSandboxConsoleAddToCombined(pSandbox, pLineBuf->u.Con.pwcBuf, pLineBuf->u.Con.cwcBuf,
+                                                      K_TRUE /*fBrokenLine*/);
+                        pLineBuf->u.Con.cwcBuf = 0;
+                    }
+                    if (off < offNextLine)
+                        kwSandboxConsoleAddToCombined(pSandbox, &pwcBuffer[off], offNextLine - off, K_TRUE /*fBrokenLine*/);
+                }
+                off = offNextLine;
+            }
+
+            /* Deal with the remaining lines */
+            while (off < offLastIncompleteLine)
+            {
+                while (offNextLine < offLastIncompleteLine && pwcBuffer[offNextLine] != '\n')
+                    offNextLine++;
+                offNextLine++;
+                kHlpAssert(offNextLine <= offLastIncompleteLine);
+                kwSandboxConsoleAddToCombined(pSandbox, &pwcBuffer[off], offNextLine - off, K_FALSE /*fBrokenLine*/);
+                off = offNextLine;
+            }
+        }
+
+        /*
+         * Buffer any remaining incomplete line chars.
+         */
+        if (cchLastIncompleteLine)
+        {
+            kHlpMemCopy(&pLineBuf->u.Con.pwcBuf[0], &pwcBuffer[offLastIncompleteLine], cchLastIncompleteLine * sizeof(wchar_t));
+            pLineBuf->u.Con.cwcBuf = cchLastIncompleteLine;
+        }
+    }
+}
+
+
+/**
+ * Worker for WriteConsoleA and WriteFile.
+ *
+ * @param   pSandbox            The sandbox.
+ * @param   pLineBuf            The line buffer.
+ * @param   pchBuffer           What to write.
+ * @param   cchToWrite          How much to write.
+ */
+static void kwSandboxConsoleWriteA(PKWSANDBOX pSandbox, PKWOUTPUTSTREAMBUF pLineBuf, const char *pchBuffer, KU32 cchToWrite)
+{
+    /*
+     * Convert it to wide char and use the 'W' to do the work.
+     */
+    int         cwcRet;
+    KU32        cwcBuf = cchToWrite * 2 + 1;
+    wchar_t    *pwcBufFree = NULL;
+    wchar_t    *pwcBuf;
+    kHlpAssert(pLineBuf->fIsConsole);
+
+    if (cwcBuf <= 4096)
+        pwcBuf = alloca(cwcBuf * sizeof(wchar_t));
+    else
+        pwcBuf = pwcBufFree = kHlpAlloc(cwcBuf * sizeof(wchar_t));
+
+    cwcRet = MultiByteToWideChar(pSandbox->Combined.uCodepage, 0/*dwFlags*/, pchBuffer, cchToWrite, pwcBuf, cwcBuf);
+    if (cwcRet > 0)
+         kwSandboxConsoleWriteW(pSandbox, pLineBuf, pwcBuf, cwcRet);
+    else
+    {
+        DWORD cchWritten;
+        kHlpAssertFailed();
+
+        /* Flush the line buffer and combined buffer before calling WriteConsoleA. */
+        if (pLineBuf->u.Con.cwcBuf > 0)
+        {
+            kwSandboxConsoleAddToCombined(pSandbox, pLineBuf->u.Con.pwcBuf, pLineBuf->u.Con.cwcBuf, K_TRUE /*fBroken*/);
+            pLineBuf->u.Con.cwcBuf = 0;
+        }
+        kwSandboxConsoleFlushCombined(pSandbox);
+
+        if (WriteConsoleA(pLineBuf->hBackup, pchBuffer, cchToWrite, &cchWritten, NULL /*pvReserved*/))
+        {
+            if (cchWritten >= cchToWrite)
+            { /* likely */ }
+            else
+            {
+                KU32 off = 0;
+                do
+                {
+                    off += cchWritten;
+                    cchWritten = 0;
+                } while (   off < cchToWrite
+                         && WriteConsoleA(pLineBuf->hBackup, &pchBuffer[off], cchToWrite - off, &cchWritten, NULL));
+            }
+        }
+    }
+
+    if (pwcBufFree)
+        kHlpFree(pwcBufFree);
+}
+
+
+/** Kernel32 - WriteConsoleA  */
+BOOL WINAPI kwSandbox_Kernel32_WriteConsoleA(HANDLE hConOutput, CONST VOID *pvBuffer, DWORD cbToWrite, PDWORD pcbWritten,
+                                             PVOID pvReserved)
+{
+    BOOL                fRc;
+    PKWOUTPUTSTREAMBUF  pLineBuf;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    if (hConOutput == g_Sandbox.StdErr.hOutput)
+        pLineBuf = &g_Sandbox.StdErr;
+    else
+        pLineBuf = &g_Sandbox.StdOut;
+    if (pLineBuf->fIsConsole)
+    {
+        kwSandboxConsoleWriteA(&g_Sandbox, pLineBuf, (char const *)pvBuffer, cbToWrite);
+
+        KWOUT_LOG(("WriteConsoleA: %p, %p LB %#x (%*.*s), %p, %p -> TRUE [cached]\n",
+                   hConOutput, pvBuffer, cbToWrite, cbToWrite, cbToWrite, pvBuffer, pcbWritten, pvReserved));
+        if (pcbWritten)
+            *pcbWritten = cbToWrite;
+        fRc = TRUE;
+    }
+    else
+    {
+        fRc = WriteConsoleA(hConOutput, pvBuffer, cbToWrite, pcbWritten, pvReserved);
+        KWOUT_LOG(("WriteConsoleA: %p, %p LB %#x (%*.*s), %p, %p -> %d !fallback!\n",
+                   hConOutput, pvBuffer, cbToWrite, cbToWrite, cbToWrite, pvBuffer, pcbWritten, pvReserved, fRc));
+    }
+    return fRc;
+}
+
+
+/** Kernel32 - WriteConsoleW  */
+BOOL WINAPI kwSandbox_Kernel32_WriteConsoleW(HANDLE hConOutput, CONST VOID *pvBuffer, DWORD cwcToWrite, PDWORD pcwcWritten,
+                                             PVOID pvReserved)
+{
+    BOOL                fRc;
+    PKWOUTPUTSTREAMBUF  pLineBuf;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    if (hConOutput == g_Sandbox.StdErr.hOutput)
+        pLineBuf = &g_Sandbox.StdErr;
+    else if (hConOutput == g_Sandbox.StdOut.hOutput)
+        pLineBuf = &g_Sandbox.StdOut;
+    else
+        pLineBuf = g_Sandbox.StdErr.fIsConsole ? &g_Sandbox.StdErr : &g_Sandbox.StdOut;
+    if (pLineBuf->fIsConsole)
+    {
+        kwSandboxConsoleWriteW(&g_Sandbox, pLineBuf, (wchar_t const *)pvBuffer, cwcToWrite);
+
+        KWOUT_LOG(("WriteConsoleW: %p, %p LB %#x (%*.*ls), %p, %p -> TRUE [cached]\n",
+                   hConOutput, pvBuffer, cwcToWrite, cwcToWrite, cwcToWrite, pvBuffer, pcwcWritten, pvReserved));
+        if (pcwcWritten)
+            *pcwcWritten = cwcToWrite;
+        fRc = TRUE;
+    }
+    else
+    {
+        fRc = WriteConsoleW(hConOutput, pvBuffer, cwcToWrite, pcwcWritten, pvReserved);
+        KWOUT_LOG(("WriteConsoleW: %p, %p LB %#x (%*.*ls), %p, %p -> %d !fallback!\n",
+                   hConOutput, pvBuffer, cwcToWrite, cwcToWrite, cwcToWrite, pvBuffer, pcwcWritten, pvReserved, fRc));
+    }
+    return fRc;
+}
+
+#endif /* WITH_CONSOLE_OUTPUT_BUFFERING */
+
+
+
+/*
+ *
+ * Virtual memory leak prevension.
+ * Virtual memory leak prevension.
+ * Virtual memory leak prevension.
+ *
+ */
+
+#ifdef WITH_FIXED_VIRTUAL_ALLOCS
+
+/** For debug logging.  */
+# ifndef NDEBUG
+static void kwSandboxLogFixedAllocation(KU32 idxFixed, const char *pszWhere)
+{
+    MEMORY_BASIC_INFORMATION MemInfo = { NULL, NULL, 0, 0, 0, 0, 0};
+    SIZE_T cbMemInfo = VirtualQuery(g_aFixedVirtualAllocs[idxFixed].pvReserved, &MemInfo, sizeof(MemInfo));
+    kHlpAssert(cbMemInfo == sizeof(MemInfo));
+    if (cbMemInfo != 0)
+        KW_LOG(("%s: #%u %p LB %#x: base=%p alloc=%p region=%#x state=%#x prot=%#x type=%#x\n",
+                pszWhere, idxFixed, g_aFixedVirtualAllocs[idxFixed].pvReserved, g_aFixedVirtualAllocs[idxFixed].cbFixed,
+                MemInfo.BaseAddress,
+                MemInfo.AllocationBase,
+                MemInfo.RegionSize,
+                MemInfo.State,
+                MemInfo.Protect,
+                MemInfo.Type));
+}
+# else
+#  define kwSandboxLogFixedAllocation(idxFixed, pszWhere) do { } while (0)
+# endif
+
+/**
+ * Used by both kwSandbox_Kernel32_VirtualFree and kwSandboxCleanupLate
+ *
+ * @param   idxFixed        The fixed allocation index to "free".
+ */
+static void kwSandboxResetFixedAllocation(KU32 idxFixed)
+{
+    BOOL fRc;
+    kwSandboxLogFixedAllocation(idxFixed, "kwSandboxResetFixedAllocation[pre]");
+    fRc = VirtualFree(g_aFixedVirtualAllocs[idxFixed].pvReserved, g_aFixedVirtualAllocs[idxFixed].cbFixed, MEM_DECOMMIT);
+    kHlpAssert(fRc); K_NOREF(fRc);
+    kwSandboxLogFixedAllocation(idxFixed, "kwSandboxResetFixedAllocation[pst]");
+    g_aFixedVirtualAllocs[idxFixed].fInUse = K_FALSE;
+}
+
+#endif /* WITH_FIXED_VIRTUAL_ALLOCS */
+
+
+/** Kernel32 - VirtualAlloc - for managing  cl.exe / c1[xx].dll heap with fixed
+ * location (~78MB in 32-bit 2010 compiler). */
+static PVOID WINAPI kwSandbox_Kernel32_VirtualAlloc(PVOID pvAddr, SIZE_T cb, DWORD fAllocType, DWORD fProt)
+{
+    PVOID pvMem;
+    if (g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_CL)
+    {
+        KU32 idxPreAllocated = KU32_MAX;
+
+#ifdef WITH_FIXED_VIRTUAL_ALLOCS
+        /*
+         * Look for a pre-reserved CL.exe heap allocation.
+         */
+        pvMem = NULL;
+        if (   pvAddr != 0
+            && (fAllocType & MEM_RESERVE))
+        {
+            KU32 idxFixed = K_ELEMENTS(g_aFixedVirtualAllocs);
+            kHlpAssert(!(fAllocType & ~(MEM_RESERVE | MEM_TOP_DOWN)));
+            while (idxFixed-- > 0)
+                if (   g_aFixedVirtualAllocs[idxFixed].uFixed == (KUPTR)pvAddr
+                    && g_aFixedVirtualAllocs[idxFixed].pvReserved)
+                {
+                    if (g_aFixedVirtualAllocs[idxFixed].cbFixed >= cb)
+                    {
+                        if (!g_aFixedVirtualAllocs[idxFixed].fInUse)
+                        {
+                            g_aFixedVirtualAllocs[idxFixed].fInUse = K_TRUE;
+                            pvMem                           = pvAddr;
+                            idxPreAllocated                 = idxFixed;
+                            KW_LOG(("VirtualAlloc: pvAddr=%p cb=%p type=%#x prot=%#x -> %p [pre allocated]\n",
+                                    pvAddr, cb, fAllocType, fProt, pvMem));
+                            kwSandboxLogFixedAllocation(idxFixed, "kwSandbox_Kernel32_VirtualAlloc");
+                            SetLastError(NO_ERROR);
+                            break;
+                        }
+                        kwErrPrintf("VirtualAlloc: Fixed allocation at %p is already in use!\n", pvAddr);
+                    }
+                    else
+                        kwErrPrintf("VirtualAlloc: Fixed allocation at %p LB %#x not large enough: %#x\n",
+                                     pvAddr, g_aFixedVirtualAllocs[idxFixed].cbFixed, cb);
+                }
+        }
+        if (!pvMem)
+#endif
+        {
+            pvMem = VirtualAlloc(pvAddr, cb, fAllocType, fProt);
+            KW_LOG(("VirtualAlloc: pvAddr=%p cb=%p type=%#x prot=%#x -> %p (last=%d)\n",
+                    pvAddr, cb, fAllocType, fProt, pvMem, GetLastError()));
+            if (   pvAddr
+                && pvAddr != pvMem
+                && !(   fAllocType == MEM_RESERVE /* After mapping the PCH, VS2019 ends up here (happens */
+                     && fProt == PAGE_READWRITE   /* in real cl.exe runs too). Just shut it up to avoid confusion. */
+#if K_ARCH_BITS >= 64
+                     && cb > 0x10000000 /* seen 67c00000, 33e00000, ++ */
+#else
+                     && cb > 0x04000000 /* no idea */
+#endif
+                   )
+               )
+                kwErrPrintf("VirtualAlloc %p LB %#x (%#x,%#x) failed: %p / %u\n",
+                            pvAddr, cb, fAllocType, fProt, pvMem, GetLastError());
+        }
+
+        if (pvMem)
+        {
+            /* 
+             * Track it.
+             */
+            PKWVIRTALLOC pTracker;
+
+            EnterCriticalSection(&g_Sandbox.VirtualAllocLock);
+            pTracker = g_Sandbox.pVirtualAllocHead;
+            while (   pTracker
+                   && (KUPTR)pvMem - (KUPTR)pTracker->pvAlloc >= pTracker->cbAlloc)
+                pTracker = pTracker->pNext;
+            LeaveCriticalSection(&g_Sandbox.VirtualAllocLock);
+            if (!pTracker)
+            {
+                DWORD dwErr = GetLastError();
+                PKWVIRTALLOC pTracker = (PKWVIRTALLOC)kHlpAlloc(sizeof(*pTracker));
+                if (pTracker)
+                {
+                    pTracker->pvAlloc           = pvMem;
+                    pTracker->cbAlloc           = cb;
+                    pTracker->idxPreAllocated   = idxPreAllocated;
+                    EnterCriticalSection(&g_Sandbox.VirtualAllocLock);
+                    pTracker->pNext             = g_Sandbox.pVirtualAllocHead;
+                    g_Sandbox.pVirtualAllocHead = pTracker;
+                    LeaveCriticalSection(&g_Sandbox.VirtualAllocLock);
+                }
+                SetLastError(dwErr);
+            }
+        }
+    }
+    else
+        pvMem = VirtualAlloc(pvAddr, cb, fAllocType, fProt);
+    KW_LOG(("VirtualAlloc: pvAddr=%p cb=%p type=%#x prot=%#x -> %p (last=%d)\n",
+            pvAddr, cb, fAllocType, fProt, pvMem, GetLastError()));
+    return pvMem;
+}
+
+
+/** Kernel32 - VirtualFree.   */
+static BOOL WINAPI kwSandbox_Kernel32_VirtualFree(PVOID pvAddr, SIZE_T cb, DWORD dwFreeType)
+{
+    BOOL fRc;
+    if (g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_CL)
+    {
+        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+        if (dwFreeType & MEM_RELEASE)
+        {
+            PKWVIRTALLOC pTracker;
+            EnterCriticalSection(&g_Sandbox.VirtualAllocLock);
+            pTracker = g_Sandbox.pVirtualAllocHead;
+            if (pTracker)
+            {
+                if (pTracker->pvAlloc == pvAddr)
+                    g_Sandbox.pVirtualAllocHead = pTracker->pNext;
+                else
+                {
+                    PKWVIRTALLOC pPrev;
+                    do
+                    {
+                        pPrev = pTracker;
+                        pTracker = pTracker->pNext;
+                    } while (pTracker && pTracker->pvAlloc != pvAddr);
+                    if (pTracker)
+                        pPrev->pNext = pTracker->pNext;
+                }
+                if (pTracker)
+                {
+#ifdef WITH_FIXED_VIRTUAL_ALLOCS
+                    if (pTracker->idxPreAllocated != KU32_MAX)
+                    {
+                        kwSandboxResetFixedAllocation(pTracker->idxPreAllocated);
+                        LeaveCriticalSection(&g_Sandbox.VirtualAllocLock);
+                        KW_LOG(("VirtualFree: pvAddr=%p cb=%p type=%#x -> TRUE [pre allocated #%u]\n",
+                                pvAddr, cb, dwFreeType, pTracker->idxPreAllocated));
+                        kHlpFree(pTracker);
+                        return TRUE;
+                    }
+#endif
+
+                    fRc = VirtualFree(pvAddr, cb, dwFreeType);
+                    if (fRc)
+                        kHlpFree(pTracker);
+                    else
+                    {
+                        pTracker->pNext = g_Sandbox.pVirtualAllocHead;
+                        g_Sandbox.pVirtualAllocHead = pTracker;
+                    }
+                    LeaveCriticalSection(&g_Sandbox.VirtualAllocLock);
+                    KW_LOG(("VirtualFree: pvAddr=%p cb=%p type=%#x -> %d\n", pvAddr, cb, dwFreeType, fRc));
+                    return fRc;
+                }
+
+                KW_LOG(("VirtualFree: pvAddr=%p not found!\n", pvAddr));
+            }
+            LeaveCriticalSection(&g_Sandbox.VirtualAllocLock);
+        }
+    }
+
+#ifdef WITH_FIXED_VIRTUAL_ALLOCS
+    /*
+     * Protect our fixed allocations (this isn't just paranoia, btw.).
+     */
+    if (dwFreeType & MEM_RELEASE)
+    {
+        KU32 idxFixed = K_ELEMENTS(g_aFixedVirtualAllocs);
+        while (idxFixed-- > 0)
+            if (g_aFixedVirtualAllocs[idxFixed].pvReserved == pvAddr)
+            {
+                KW_LOG(("VirtualFree: Damn it! Don't free g_aFixedVirtualAllocs[#%u]: %p LB %#x\n",
+                        idxFixed, g_aFixedVirtualAllocs[idxFixed].pvReserved, g_aFixedVirtualAllocs[idxFixed].cbFixed));
+                return TRUE;
+            }
+    }
+#endif
+
+    /*
+     * Not tracker or not actually free the virtual range.
+     */
+    fRc = VirtualFree(pvAddr, cb, dwFreeType);
+    KW_LOG(("VirtualFree: pvAddr=%p cb=%p type=%#x -> %d\n", pvAddr, cb, dwFreeType, fRc));
+    return fRc;
+}
+
+
+/** Kernel32 - HeapCreate / NtDll - RTlCreateHeap  */
+HANDLE WINAPI kwSandbox_Kernel32_HeapCreate(DWORD fOptions, SIZE_T cbInitial, SIZE_T cbMax)
+{
+    HANDLE hHeap;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+    hHeap = HeapCreate(fOptions, cbInitial, cbMax);
+    if (hHeap != NULL)
+    {
+        DWORD dwErr = GetLastError();
+        PKWHEAP pTracker = (PKWHEAP)kHlpAlloc(sizeof(*pTracker));
+        if (pTracker)
+        {
+            pTracker->hHeap = hHeap;
+            pTracker->pNext = g_Sandbox.pHeapHead;
+            g_Sandbox.pHeapHead = pTracker;
+        }
+
+        SetLastError(dwErr);
+    }
+    return hHeap;
+
+}
+
+
+/** Kernel32 - HeapDestroy / NtDll - RTlDestroyHeap */
+BOOL WINAPI kwSandbox_Kernel32_HeapDestroy(HANDLE hHeap)
+{
+    BOOL fRc = HeapDestroy(hHeap);
+    KW_LOG(("HeapDestroy: hHeap=%p -> %d\n", hHeap, fRc));
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    if (fRc)
+    {
+        PKWHEAP pTracker = g_Sandbox.pHeapHead;
+        if (pTracker)
+        {
+            if (pTracker->hHeap == hHeap)
+                g_Sandbox.pHeapHead = pTracker->pNext;
+            else
+            {
+                PKWHEAP pPrev;
+                do
+                {
+                    pPrev = pTracker;
+                    pTracker = pTracker->pNext;
+                } while (pTracker && pTracker->hHeap == hHeap);
+                if (pTracker)
+                    pPrev->pNext = pTracker->pNext;
+            }
+            if (pTracker)
+                kHlpFree(pTracker);
+            else
+                KW_LOG(("HeapDestroy: pvAddr=%p not found!\n", hHeap));
+        }
+    }
+
+    return fRc;
+}
+
+
+
+/*
+ *
+ * Thread/Fiber local storage leak prevention.
+ * Thread/Fiber local storage leak prevention.
+ * Thread/Fiber local storage leak prevention.
+ *
+ * Note! The FlsAlloc/Free & TlsAlloc/Free causes problems for statically
+ *       linked VS2010 code like VBoxBs3ObjConverter.exe.  One thing is that
+ *       we're leaking these indexes, but more importantely we crash during
+ *       worker exit since the callback is triggered multiple times.
+ */
+
+
+/** Kernel32 - FlsAlloc  */
+DWORD WINAPI kwSandbox_Kernel32_FlsAlloc(PFLS_CALLBACK_FUNCTION pfnCallback)
+{
+    DWORD idxFls = FlsAlloc(pfnCallback);
+    KW_LOG(("FlsAlloc(%p) -> %#x\n", pfnCallback, idxFls));
+    if (idxFls != FLS_OUT_OF_INDEXES)
+    {
+        PKWLOCALSTORAGE pTracker = (PKWLOCALSTORAGE)kHlpAlloc(sizeof(*pTracker));
+        if (pTracker)
+        {
+            kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+            pTracker->idx = idxFls;
+            pTracker->pNext = g_Sandbox.pFlsAllocHead;
+            g_Sandbox.pFlsAllocHead = pTracker;
+        }
+    }
+
+    return idxFls;
+}
+
+/** Kernel32 - FlsFree */
+BOOL WINAPI kwSandbox_Kernel32_FlsFree(DWORD idxFls)
+{
+    BOOL fRc = FlsFree(idxFls);
+    KW_LOG(("FlsFree(%#x) -> %d\n", idxFls, fRc));
+    if (fRc)
+    {
+        PKWLOCALSTORAGE pTracker;
+        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+        pTracker = g_Sandbox.pFlsAllocHead;
+        if (pTracker)
+        {
+            if (pTracker->idx == idxFls)
+                g_Sandbox.pFlsAllocHead = pTracker->pNext;
+            else
+            {
+                PKWLOCALSTORAGE pPrev;
+                do
+                {
+                    pPrev = pTracker;
+                    pTracker = pTracker->pNext;
+                } while (pTracker && pTracker->idx != idxFls);
+                if (pTracker)
+                    pPrev->pNext = pTracker->pNext;
+            }
+            if (pTracker)
+            {
+                pTracker->idx   = FLS_OUT_OF_INDEXES;
+                pTracker->pNext = NULL;
+                kHlpFree(pTracker);
+            }
+        }
+    }
+    return fRc;
+}
+
+
+/** Kernel32 - TlsAlloc  */
+DWORD WINAPI kwSandbox_Kernel32_TlsAlloc(VOID)
+{
+    DWORD idxTls = TlsAlloc();
+    KW_LOG(("TlsAlloc() -> %#x\n", idxTls));
+    if (idxTls != TLS_OUT_OF_INDEXES)
+    {
+        PKWLOCALSTORAGE pTracker = (PKWLOCALSTORAGE)kHlpAlloc(sizeof(*pTracker));
+        if (pTracker)
+        {
+            kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+            pTracker->idx = idxTls;
+            pTracker->pNext = g_Sandbox.pTlsAllocHead;
+            g_Sandbox.pTlsAllocHead = pTracker;
+        }
+    }
+
+    return idxTls;
+}
+
+/** Kernel32 - TlsFree */
+BOOL WINAPI kwSandbox_Kernel32_TlsFree(DWORD idxTls)
+{
+    BOOL fRc = TlsFree(idxTls);
+    KW_LOG(("TlsFree(%#x) -> %d\n", idxTls, fRc));
+    if (fRc)
+    {
+        PKWLOCALSTORAGE pTracker;
+        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+
+        pTracker = g_Sandbox.pTlsAllocHead;
+        if (pTracker)
+        {
+            if (pTracker->idx == idxTls)
+                g_Sandbox.pTlsAllocHead = pTracker->pNext;
+            else
+            {
+                PKWLOCALSTORAGE pPrev;
+                do
+                {
+                    pPrev = pTracker;
+                    pTracker = pTracker->pNext;
+                } while (pTracker && pTracker->idx != idxTls);
+                if (pTracker)
+                    pPrev->pNext = pTracker->pNext;
+            }
+            if (pTracker)
+            {
+                pTracker->idx   = TLS_OUT_OF_INDEXES;
+                pTracker->pNext = NULL;
+                kHlpFree(pTracker);
+            }
+        }
+    }
+    return fRc;
+}
+
+
+
+/*
+ *
+ * Header file hashing.
+ * Header file hashing.
+ * Header file hashing.
+ *
+ * c1.dll / c1XX.dll hashes the input files.  The Visual C++ 2010 profiler
+ * indicated that ~12% of the time was spent doing MD5 caluclation when
+ * rebuiling openssl.  The hashing it done right after reading the source
+ * via ReadFile, same buffers and sizes.
+ */
+
+#ifdef WITH_HASH_CACHE
+
+/**
+ * Gets our crypto provider context/instance, creating it if needed.
+ */
+static HCRYPTPROV kwSandboxGetCryptoProvider(ALG_ID idAlg)
+{
+    DWORD       dwProvider;
+    HCRYPTPROV *phCryptProv;
+    HCRYPTPROV  hCryptProv;
+    if (   idAlg == CALG_SHA_256
+        || idAlg == CALG_SHA_512)
+    {
+        phCryptProv = &g_Sandbox.hCryptProvAes;
+        dwProvider = PROV_RSA_AES;
+    }
+    else
+    {
+        phCryptProv = &g_Sandbox.hCryptProvRsa;
+        dwProvider = PROV_RSA_FULL;
+    }
+    hCryptProv = *phCryptProv;
+    if (hCryptProv)
+        return hCryptProv;
+
+    /* Create it. */
+    if (CryptAcquireContextW(&hCryptProv, NULL, NULL, dwProvider, CRYPT_VERIFYCONTEXT))
+    {
+        kHlpAssert(hCryptProv != 0);
+        kHlpAssert(hCryptProv != KUPTR_MAX);
+        *phCryptProv = hCryptProv;
+        return hCryptProv;
+    }
+
+    kwErrPrintf("kwSandboxGetCryptoProvider: CryptAcquireContext(,,,%#x, CRYPT_VERIFYCONTEXT) failed! %u\n",
+                dwProvider, GetLastError());
+    return (HCRYPTPROV)NULL;
+}
+
+/** AdvApi32 - CryptCreateHash */
+static BOOL WINAPI kwSandbox_Advapi32_CryptCreateHash(HCRYPTPROV hProv, ALG_ID idAlg, HCRYPTKEY hKey, DWORD dwFlags,
+                                                      HCRYPTHASH *phHash)
+{
+    BOOL fRc;
+
+    /*
+     * Only do this for cl.exe when it request normal MD5.
+     */
+    if (g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_CL)
+    {
+        KU32        cbDigest;
+        const char *pszName;
+        switch (idAlg)
+        {
+            case CALG_MD5:
+                cbDigest = 128/8;
+                pszName  = "MD5";
+                g_cHashesMd5++;
+                break;
+            case CALG_SHA1:
+                cbDigest = 160/8;
+                pszName  = "SHA1";
+                g_cHashesSha1++;
+                break;
+            case CALG_SHA_256:
+                cbDigest = 256/8;
+                pszName  = "SHA-256";
+                g_cHashesSha256++;
+                break;
+            case CALG_SHA_512:
+                cbDigest = 512/8;
+                pszName  = "SHA-512";
+                g_cHashesSha512++;
+                break;
+            default:
+                cbDigest = 0;
+                pszName  = NULL;
+                break;
+        }
+
+        if (cbDigest)
+        {
+            if (hKey == 0)
+            {
+                if (dwFlags == 0)
+                {
+                    PKWCRYPTHASH pHash = (PKWCRYPTHASH)kHlpAllocZ(sizeof(*pHash));
+                    if (pHash)
+                    {
+                        kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+                        pHash->uMagic        = KWCRYPTHASH_MAGIC;
+                        pHash->cbHashed      = 0;
+                        pHash->fGoneBad      = K_FALSE;
+                        pHash->fFinal        = K_FALSE;
+                        pHash->hFallback     = KUPTR_MAX;
+                        pHash->idAlg         = idAlg;
+                        pHash->pszAlgName    = pszName;
+                        pHash->cbDigest      = cbDigest;
+
+                        /* link it. */
+                        pHash->pNext         = g_Sandbox.pHashHead;
+                        g_Sandbox.pHashHead  = pHash;
+
+                        *phHash = (KUPTR)pHash;
+                        KWCRYPT_LOG(("CryptCreateHash(hProv=%p, idAlg=%s, 0, 0, *phHash=%p) -> %d [cached]\n",
+                                     hProv, pszName, *phHash, TRUE));
+                        return TRUE;
+                    }
+
+                    kwErrPrintf("CryptCreateHash: out of memory!\n");
+                }
+                else
+                    kwErrPrintf("CryptCreateHash: dwFlags=%p is not supported with %s\n", hKey, pszName);
+            }
+            else
+                kwErrPrintf("CryptCreateHash: hKey=%p is not supported with %s\n", hKey, pszName);
+        }
+        else
+            kwErrPrintf("CryptCreateHash: idAlg=%#x is not supported\n", idAlg);
+    }
+
+    /*
+     * Fallback.
+     */
+    fRc = CryptCreateHash(hProv, idAlg, hKey, dwFlags, phHash);
+    KWCRYPT_LOG(("CryptCreateHash(hProv=%p, idAlg=%#x (%d), hKey=%p, dwFlags=%#x, *phHash=%p) -> %d\n",
+                 hProv, idAlg, idAlg, hKey, dwFlags, *phHash, fRc));
+    return fRc;
+}
+
+
+/** AdvApi32 - CryptHashData */
+static BOOL WINAPI kwSandbox_Advapi32_CryptHashData(HCRYPTHASH hHash, CONST BYTE *pbData, DWORD cbData, DWORD dwFlags)
+{
+    BOOL         fRc;
+    PKWCRYPTHASH pHash = g_Sandbox.pHashHead;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    while (pHash && (KUPTR)pHash != hHash)
+        pHash = pHash->pNext;
+    KWCRYPT_LOG(("CryptHashData(hHash=%p/%p, pbData=%p, cbData=%#x, dwFlags=%#x)\n",
+                 hHash, pHash, pbData, cbData, dwFlags));
+    if (pHash)
+    {
+        /*
+         * Validate the state.
+         */
+        if (   pHash->uMagic == KWCRYPTHASH_MAGIC
+            && !pHash->fFinal
+            && !pHash->fGoneBad)
+        {
+            if (pHash->hFallback == KUPTR_MAX)
+            {
+                /*
+                 * Does this match the previous ReadFile call to a cached file?
+                 * If it doesn't, try falling back.
+                 */
+                if (   g_Sandbox.LastHashRead.cbRead == cbData
+                    && g_Sandbox.LastHashRead.pvRead == (void *)pbData)
+                {
+                    PKFSWCACHEDFILE pCachedFile = g_Sandbox.LastHashRead.pCachedFile;
+                    if (   pCachedFile
+                        && kHlpMemComp(pbData, &pCachedFile->pbCached[g_Sandbox.LastHashRead.offRead], K_MIN(cbData, 64)) == 0)
+                    {
+
+                        if (g_Sandbox.LastHashRead.offRead == pHash->cbHashed)
+                        {
+                            if (   pHash->pCachedFile == NULL
+                                && pHash->cbHashed == 0)
+                                pHash->pCachedFile = pCachedFile;
+                            if (pHash->pCachedFile == pCachedFile)
+                            {
+                                pHash->cbHashed += cbData;
+                                g_Sandbox.LastHashRead.pCachedFile = NULL;
+                                g_Sandbox.LastHashRead.pvRead      = NULL;
+                                g_Sandbox.LastHashRead.cbRead      = 0;
+                                g_Sandbox.LastHashRead.offRead     = 0;
+                                KWCRYPT_LOG(("CryptHashData(hHash=%p/%p/%s, pbData=%p, cbData=%#x, dwFlags=%#x) -> 1 [cached]\n",
+                                             hHash, pCachedFile, pCachedFile->szPath, pbData, cbData, dwFlags));
+                                return TRUE;
+                            }
+
+                            /* Note! it's possible to fall back here too, if necessary. */
+                            kwErrPrintf("CryptHashData: Expected pCachedFile=%p, last read was made to %p!!\n",
+                                        pHash->pCachedFile, g_Sandbox.LastHashRead.pCachedFile);
+                        }
+                        else
+                            kwErrPrintf("CryptHashData: Expected last read at %#x, instead it was made at %#x\n",
+                                        pHash->cbHashed, g_Sandbox.LastHashRead.offRead);
+                    }
+                    else if (!pCachedFile)
+                        KWCRYPT_LOG(("CryptHashData: Last pCachedFile is NULL when buffer address and size matches!\n"));
+                    else
+                        kwErrPrintf("CryptHashData: First 64 bytes of the buffer doesn't match the cache.\n");
+                }
+                else if (g_Sandbox.LastHashRead.cbRead != 0 && pHash->cbHashed != 0)
+                    kwErrPrintf("CryptHashData: Expected cbRead=%#x and pbData=%p, got %#x and %p instead\n",
+                                g_Sandbox.LastHashRead.cbRead, g_Sandbox.LastHashRead.pvRead, cbData, pbData);
+                if (pHash->cbHashed == 0)
+                {
+                    /* Initiate fallback mode (file that we don't normally cache, like .c/.cpp). */
+                    HCRYPTPROV hCryptProv = kwSandboxGetCryptoProvider(pHash->idAlg);
+                    if (hCryptProv)
+                    {
+                        HCRYPTHASH hCryptHash = KUPTR_MAX;
+                        if (CryptCreateHash(hCryptProv, pHash->idAlg, 0, 0, &hCryptHash))
+                        {
+                            kHlpAssert(hCryptHash != KUPTR_MAX);
+                            pHash->hFallback = hCryptHash;
+                            fRc = CryptHashData(hCryptHash, pbData, cbData, dwFlags);
+                            if (fRc)
+                                pHash->cbHashed = cbData;
+                            g_cHashesFallbacks++;
+                            KWCRYPT_LOG(("CryptHashData(hHash=%p/fallback, pbData=%p, cbData=%#x, dwFlags=%#x) -> %d (%u) [fallback!]\n",
+                                         hHash, pbData, cbData, dwFlags, fRc, GetLastError()));
+                        }
+                        else
+                        {
+                            kwErrPrintf("kwSandbox_Advapi32_CryptHashData: Fallback CryptCreateHash(%u) failed: %u\n",
+                                        pHash->idAlg, GetLastError());
+                            fRc = FALSE;
+                        }
+                        return fRc;
+                    }
+                }
+                pHash->fGoneBad = K_TRUE;
+                SetLastError(ERROR_INVALID_PARAMETER);
+                fRc = FALSE;
+            }
+            else
+            {
+                /* fallback. */
+                fRc = CryptHashData(pHash->hFallback, pbData, cbData, dwFlags);
+                if (fRc)
+                    pHash->cbHashed += cbData;
+                KWCRYPT_LOG(("CryptHashData(hHash=%p/fallback, pbData=%p, cbData=%#x, dwFlags=%#x) -> %d [fallback]\n",
+                             hHash, pbData, cbData, dwFlags, fRc));
+            }
+        }
+        /*
+         * Bad handle state.
+         */
+        else
+        {
+            if (pHash->uMagic != KWCRYPTHASH_MAGIC)
+                kwErrPrintf("CryptHashData: Invalid cached hash handle!!\n");
+            else
+                kwErrPrintf("CryptHashData: Hash is already finalized!!\n");
+            SetLastError((DWORD)NTE_BAD_HASH);
+            fRc = FALSE;
+        }
+    }
+    else
+    {
+
+        fRc = CryptHashData(hHash, pbData, cbData, dwFlags);
+        KWCRYPT_LOG(("CryptHashData(hHash=%p, pbData=%p, cbData=%#x, dwFlags=%#x) -> %d\n", hHash, pbData, cbData, dwFlags, fRc));
+    }
+    return fRc;
+}
+
+
+/** Helper for simpe data hashing.   */
+static BOOL kwSandboxCalcHash(ALG_ID idAlg, void const *pvData, KSIZE cbData, KU8 *pbDigest, KSIZE cbDigest)
+{
+    BOOL fRet = FALSE;
+    if (idAlg == CALG_MD5)
+    {
+        struct MD5Context Ctx;
+        MD5Init(&Ctx);
+        MD5Update(&Ctx, (unsigned char const *)pvData, (unsigned)cbData);
+        MD5Final(pbDigest, &Ctx);
+        fRet = TRUE;
+    }
+    else
+    {
+        HCRYPTPROV hCryptProv = kwSandboxGetCryptoProvider(idAlg);
+        if (hCryptProv)
+        {
+            HCRYPTHASH hCryptHash = KUPTR_MAX;
+            if (CryptCreateHash(hCryptProv, idAlg, 0, 0, &hCryptHash))
+            {
+                if (CryptHashData(hCryptHash, (const BYTE *)pvData, (DWORD)cbData, 0))
+                {
+                    DWORD cbActual = (DWORD)cbDigest;
+                    if (CryptGetHashParam(hCryptHash, HP_HASHVAL, pbDigest, &cbActual, 0))
+                    {
+                        fRet = TRUE;
+                        kHlpAssert(cbActual == cbDigest);
+                    }
+                    else
+                        kwErrPrintf("CryptGetHashParam([%#x],HP_HASHVAL,%p,%#x,0) failed: %u\n",
+                                    idAlg, pbDigest, cbDigest, GetLastError());
+                }
+                else
+                    kwErrPrintf("CryptHashData([%#x],%p,%#x,0) failed: %u\n", idAlg, pvData, cbData, GetLastError());
+                CryptDestroyHash(hCryptHash);
+            }
+            else
+                kwErrPrintf("CryptCreateHash(%#x) failed: %u\n", idAlg, GetLastError());
+        }
+    }
+    return fRet;
+}
+
+
+/** AdvApi32 - CryptGetHashParam */
+static BOOL WINAPI kwSandbox_Advapi32_CryptGetHashParam(HCRYPTHASH hHash, DWORD dwParam,
+                                                        BYTE *pbData, DWORD *pcbData, DWORD dwFlags)
+{
+    BOOL            fRc;
+    PKWCRYPTHASH    pHash = g_Sandbox.pHashHead;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    while (pHash && (KUPTR)pHash != hHash)
+        pHash = pHash->pNext;
+    if (pHash)
+    {
+        if (pHash->uMagic == KWCRYPTHASH_MAGIC)
+        {
+            if (dwFlags == 0)
+            {
+                DWORD cbRet;
+                void *pvRet;
+                union
+                {
+                    DWORD dw;
+                } uBuf;
+
+                switch (dwParam)
+                {
+                    case HP_HASHVAL:
+                    {
+                        /* Check the hash progress. */
+                        PKFSWCACHEDFILE pCachedFile = pHash->pCachedFile;
+                        g_cHashes++;
+                        if (pCachedFile)
+                        {
+                            if (   pCachedFile->cbCached == pHash->cbHashed
+                                && !pHash->fGoneBad)
+                            {
+                                KBOOL *pfValid;
+                                switch (pHash->idAlg)
+                                {
+                                    case CALG_MD5:
+                                        pfValid = &pCachedFile->fValidMd5;
+                                        pvRet   = pCachedFile->abMd5Digest;
+                                        break;
+                                    case CALG_SHA1:
+                                        pfValid = &pCachedFile->fValidSha1;
+                                        pvRet   = pCachedFile->abSha1Digest;
+                                        break;
+                                    case CALG_SHA_256:
+                                        pfValid = &pCachedFile->fValidSha256;
+                                        pvRet   = pCachedFile->abSha256Digest;
+                                        break;
+                                    case CALG_SHA_512:
+                                        pfValid = &pCachedFile->fValidSha512;
+                                        pvRet   = pCachedFile->abSha512Digest;
+                                        break;
+                                    default:
+                                        kwErrPrintf("Invalid idAlg value: %#x\n", pHash->idAlg);
+                                        SetLastError(ERROR_INVALID_SERVER_STATE);
+                                        return FALSE;
+                                }
+
+                                if (*pfValid)
+                                {
+                                    KWCRYPT_LOG(("Already calculated hash for %p/%s! [hit]\n", pCachedFile, pCachedFile->szPath));
+                                    g_cHashesCached++;
+                                }
+                                else
+                                {
+                                    fRc = kwSandboxCalcHash(pHash->idAlg, pCachedFile->pbCached, pCachedFile->cbCached,
+                                                            pvRet, pHash->cbDigest);
+                                    if (!fRc)
+                                        return FALSE;
+                                    *pfValid = K_TRUE;
+                                    KWCRYPT_LOG(("Calculated hash for %p/%s.\n", pCachedFile, pCachedFile->szPath));
+                                }
+                            }
+                            else
+                            {
+                                /* This actually happens (iprt/string.h + common/alloc/alloc.cpp), at least
+                                   from what I can tell, so just deal with it. */
+                                KWCRYPT_LOG(("CryptGetHashParam/HP_HASHVAL: Not at end of cached file! cbCached=%#x cbHashed=%#x fGoneBad=%d (%p/%p/%s)\n",
+                                             pHash->pCachedFile->cbCached, pHash->cbHashed, pHash->fGoneBad,
+                                             pHash, pCachedFile, pCachedFile->szPath));
+                                g_cHashesPartial++;
+                                pHash->pCachedFile = NULL;
+                                pvRet = pHash->abDigest;
+                                fRc = kwSandboxCalcHash(pHash->idAlg, pCachedFile->pbCached, pHash->cbHashed,
+                                                        pvRet, pHash->cbDigest);
+                                if (!fRc)
+                                {
+                                    pHash->fGoneBad = K_TRUE;
+                                    return FALSE;
+                                }
+                            }
+                            pHash->fFinal = K_TRUE;
+                            cbRet = pHash->cbDigest;
+                            break;
+                        }
+
+                        pvRet = pHash->abDigest;
+                        cbRet = pHash->cbDigest;
+                        if (pHash->fFinal)
+                            break;
+                        if (pHash->hFallback != KUPTR_MAX)
+                        {
+                            DWORD cbActual = (DWORD)pHash->cbDigest;
+                            if (CryptGetHashParam(pHash->hFallback, HP_HASHVAL, pHash->abDigest, &cbActual, 0))
+                            {
+                                kHlpAssert(cbActual == pHash->cbDigest);
+                                pHash->fFinal = K_TRUE;
+                                break;
+                            }
+                            kwErrPrintf("CryptGetHashParam/HP_HASHVAL: Fallback CryptGetHashParam failed: %u!!\n", GetLastError());
+                        }
+                        else
+                        {
+                            kwErrPrintf("CryptGetHashParam/HP_HASHVAL: pCachedFile is NULL!!\n");
+                            SetLastError(ERROR_INVALID_SERVER_STATE);
+                        }
+                        return FALSE;
+                    }
+
+                    case HP_HASHSIZE:
+                        uBuf.dw = pHash->cbDigest;
+                        pvRet = &uBuf;
+                        cbRet = sizeof(DWORD);
+                        break;
+
+                    case HP_ALGID:
+                        uBuf.dw = pHash->idAlg;
+                        pvRet = &uBuf;
+                        cbRet = sizeof(DWORD);
+                        break;
+
+                    default:
+                        kwErrPrintf("CryptGetHashParam: Unknown dwParam=%#x\n", dwParam);
+                        SetLastError((DWORD)NTE_BAD_TYPE);
+                        return FALSE;
+                }
+
+                /*
+                 * Copy out cbRet from pvRet.
+                 */
+                if (pbData)
+                {
+                    if (*pcbData >= cbRet)
+                    {
+                        *pcbData = cbRet;
+                        kHlpMemCopy(pbData, pvRet, cbRet);
+                        if (cbRet == 4)
+                            KWCRYPT_LOG(("CryptGetHashParam/%#x/%p/%p: TRUE, cbRet=%#x data=%#x [cached]\n",
+                                         dwParam, pHash, pHash->pCachedFile, cbRet, (DWORD *)pbData));
+                        else if (cbRet == 16)
+                            KWCRYPT_LOG(("CryptGetHashParam/%#x/%p/%p: TRUE, cbRet=%#x data=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x [cached]\n",
+                                         dwParam, pHash, pHash->pCachedFile, cbRet,
+                                         pbData[0],  pbData[1],  pbData[2],  pbData[3],
+                                         pbData[4],  pbData[5],  pbData[6],  pbData[7],
+                                         pbData[8],  pbData[9],  pbData[10], pbData[11],
+                                         pbData[12], pbData[13], pbData[14], pbData[15]));
+                        else if (cbRet == 20)
+                            KWCRYPT_LOG(("CryptGetHashParam/%#x/%p/%p: TRUE, cbRet=%#x data=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x [cached]\n",
+                                         dwParam, pHash, pHash->pCachedFile, cbRet,
+                                         pbData[0],  pbData[1],  pbData[2],  pbData[3],
+                                         pbData[4],  pbData[5],  pbData[6],  pbData[7],
+                                         pbData[8],  pbData[9],  pbData[10], pbData[11],
+                                         pbData[12], pbData[13], pbData[14], pbData[15],
+                                         pbData[16], pbData[17], pbData[18], pbData[19] ));
+                        else if (cbRet >= 32)
+                            KWCRYPT_LOG(("CryptGetHashParam/%#x/%p/%p: TRUE, cbRet=%#x data=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%s [cached]\n",
+                                         dwParam, pHash, pHash->pCachedFile, cbRet,
+                                         pbData[0],  pbData[1],  pbData[2],  pbData[3],
+                                         pbData[4],  pbData[5],  pbData[6],  pbData[7],
+                                         pbData[8],  pbData[9],  pbData[10], pbData[11],
+                                         pbData[12], pbData[13], pbData[14], pbData[15],
+                                         pbData[16], pbData[17], pbData[18], pbData[19],
+                                         pbData[20], pbData[21], pbData[22], pbData[23],
+                                         pbData[24], pbData[25], pbData[26], pbData[27],
+                                         pbData[28], pbData[29], pbData[30], pbData[31], cbRet > 32 ? "..." : ""));
+                        else
+                            KWCRYPT_LOG(("CryptGetHashParam/%#x%/p%/%p: TRUE, cbRet=%#x [cached]\n",
+                                         dwParam, pHash, pHash->pCachedFile, cbRet));
+                        return TRUE;
+                    }
+
+                    kHlpMemCopy(pbData, pvRet, *pcbData);
+                }
+                SetLastError(ERROR_MORE_DATA);
+                *pcbData = cbRet;
+                KWCRYPT_LOG(("CryptGetHashParam/%#x: ERROR_MORE_DATA\n"));
+            }
+            else
+            {
+                kwErrPrintf("CryptGetHashParam: dwFlags is not zero: %#x!\n", dwFlags);
+                SetLastError((DWORD)NTE_BAD_FLAGS);
+            }
+        }
+        else
+        {
+            kwErrPrintf("CryptGetHashParam: Invalid cached hash handle!!\n");
+            SetLastError((DWORD)NTE_BAD_HASH);
+        }
+        fRc = FALSE;
+    }
+    /*
+     * Regular handle.
+     */
+    else
+    {
+        fRc = CryptGetHashParam(hHash, dwParam, pbData, pcbData, dwFlags);
+        KWCRYPT_LOG(("CryptGetHashParam(hHash=%p, dwParam=%#x (%d), pbData=%p, *pcbData=%#x, dwFlags=%#x) -> %d\n",
+                     hHash, dwParam, pbData, *pcbData, dwFlags, fRc));
+    }
+
+    return fRc;
+}
+
+
+/** AdvApi32 - CryptDestroyHash */
+static BOOL WINAPI kwSandbox_Advapi32_CryptDestroyHash(HCRYPTHASH hHash)
+{
+    BOOL            fRc;
+    PKWCRYPTHASH    pPrev = NULL;
+    PKWCRYPTHASH    pHash = g_Sandbox.pHashHead;
+    kHlpAssert(GetCurrentThreadId() == g_Sandbox.idMainThread);
+    while (pHash && (KUPTR)pHash != hHash)
+    {
+        pPrev = pHash;
+        pHash = pHash->pNext;
+    }
+    if (pHash)
+    {
+        if (pHash->uMagic == KWCRYPTHASH_MAGIC)
+        {
+            pHash->uMagic = 0;
+            if (!pPrev)
+                g_Sandbox.pHashHead = pHash->pNext;
+            else
+                pPrev->pNext = pHash->pNext;
+            kHlpFree(pHash);
+            KWCRYPT_LOG(("CryptDestroyHash(hHash=%p) -> 1 [cached]\n", hHash));
+            fRc = TRUE;
+        }
+        else
+        {
+            kwErrPrintf("CryptDestroyHash: Invalid cached hash handle!!\n");
+            KWCRYPT_LOG(("CryptDestroyHash(hHash=%p) -> FALSE! [cached]\n", hHash));
+            SetLastError(ERROR_INVALID_HANDLE);
+            fRc = FALSE;
+        }
+    }
+    /*
+     * Regular handle.
+     */
+    else
+    {
+        fRc = CryptDestroyHash(hHash);
+        KWCRYPT_LOG(("CryptDestroyHash(hHash=%p) -> %d\n", hHash, fRc));
+    }
+    return fRc;
+}
+
+#endif /* WITH_HASH_CACHE */
+
+
+/*
+ *
+ * Reuse crypt context.
+ * Reuse crypt context.
+ * Reuse crypt context.
+ *
+ *
+ * This saves a little bit of time and registry accesses each time CL, C1 or C1XX runs.
+ *
+ */
+
+#ifdef WITH_CRYPT_CTX_REUSE
+
+/** AdvApi32 - CryptAcquireContextW.  */
+static BOOL WINAPI kwSandbox_Advapi32_CryptAcquireContextW(HCRYPTPROV *phProv, LPCWSTR pwszContainer, LPCWSTR pwszProvider,
+                                                           DWORD dwProvType,  DWORD dwFlags)
+{
+    BOOL fRet;
+
+    /*
+     * Lookup reusable context based on the input.
+     */
+    KSIZE const cwcContainer = pwszContainer ? kwUtf16Len(pwszContainer) : 0;
+    KSIZE const cwcProvider  = pwszProvider  ? kwUtf16Len(pwszProvider) : 0;
+    KU32        iCtx = g_Sandbox.cCryptCtxs;
+    while (iCtx-- > 0)
+    {
+        if (   g_Sandbox.aCryptCtxs[iCtx].cwcContainer == cwcContainer
+            && g_Sandbox.aCryptCtxs[iCtx].cwcProvider  == cwcProvider
+            && g_Sandbox.aCryptCtxs[iCtx].dwProvType   == dwProvType
+            && g_Sandbox.aCryptCtxs[iCtx].dwFlags      == dwFlags
+            && kHlpMemComp(g_Sandbox.aCryptCtxs[iCtx].pwszContainer, pwszContainer, cwcContainer * sizeof(wchar_t)) == 0
+            && kHlpMemComp(g_Sandbox.aCryptCtxs[iCtx].pwszProvider,  pwszProvider,  cwcProvider  * sizeof(wchar_t)) == 0)
+        {
+            if (CryptContextAddRef(g_Sandbox.aCryptCtxs[iCtx].hProv, NULL, 0))
+            {
+                *phProv = g_Sandbox.aCryptCtxs[iCtx].hProv;
+                KWCRYPT_LOG(("CryptAcquireContextW(,%ls, %ls, %#x, %#x) -> TRUE, %p [reused]\n",
+                             pwszContainer, pwszProvider, dwProvType, dwFlags, *phProv));
+                return TRUE;
+            }
+        }
+    }
+
+    /*
+     * Create it and enter it into the reused array if possible.
+     */
+    fRet = CryptAcquireContextW(phProv, pwszContainer, pwszProvider, dwProvType, dwFlags);
+    if (fRet)
+    {
+        iCtx = g_Sandbox.cCryptCtxs;
+        if (iCtx < K_ELEMENTS(g_Sandbox.aCryptCtxs))
+        {
+            /* Try duplicate the input strings. */
+            g_Sandbox.aCryptCtxs[iCtx].pwszContainer = kHlpDup(pwszContainer ? pwszContainer : L"",
+                                                               (cwcContainer + 1) * sizeof(wchar_t));
+            if (g_Sandbox.aCryptCtxs[iCtx].pwszContainer)
+            {
+                g_Sandbox.aCryptCtxs[iCtx].pwszProvider  = kHlpDup(pwszProvider ? pwszProvider : L"",
+                                                                   (cwcProvider + 1) * sizeof(wchar_t));
+                if (g_Sandbox.aCryptCtxs[iCtx].pwszProvider)
+                {
+                    /* Add a couple of references just to be on the safe side and all that. */
+                    HCRYPTPROV hProv = *phProv;
+                    if (CryptContextAddRef(hProv, NULL, 0))
+                    {
+                        if (CryptContextAddRef(hProv, NULL, 0))
+                        {
+                            /* Okay, finish the entry and return success */
+                            g_Sandbox.aCryptCtxs[iCtx].hProv      = hProv;
+                            g_Sandbox.aCryptCtxs[iCtx].dwProvType = dwProvType;
+                            g_Sandbox.aCryptCtxs[iCtx].dwFlags    = dwFlags;
+                            g_Sandbox.cCryptCtxs = iCtx + 1;
+
+                            KWCRYPT_LOG(("CryptAcquireContextW(,%ls, %ls, %#x, %#x) -> TRUE, %p [new]\n",
+                                         pwszContainer, pwszProvider, dwProvType, dwFlags, *phProv));
+                            return TRUE;
+                        }
+                        CryptReleaseContext(hProv, 0);
+                    }
+                    KWCRYPT_LOG(("CryptAcquireContextW: CryptContextAddRef failed!\n"));
+
+                    kHlpFree(g_Sandbox.aCryptCtxs[iCtx].pwszProvider);
+                    g_Sandbox.aCryptCtxs[iCtx].pwszProvider = NULL;
+                }
+                kHlpFree(g_Sandbox.aCryptCtxs[iCtx].pwszContainer);
+                g_Sandbox.aCryptCtxs[iCtx].pwszContainer = NULL;
+            }
+        }
+        else
+            KWCRYPT_LOG(("CryptAcquireContextW: Too many crypt contexts to keep and reuse!\n"));
+    }
+
+    KWCRYPT_LOG(("CryptAcquireContextW(,%ls, %ls, %#x, %#x) -> %d, %p\n",
+                 pwszContainer, pwszProvider, dwProvType, dwFlags, *phProv));
+    return fRet;
+}
+
+
+/** AdvApi32 - CryptReleaseContext */
+static BOOL WINAPI kwSandbox_Advapi32_CryptReleaseContext(HCRYPTPROV hProv, DWORD dwFlags)
+{
+    BOOL fRet = CryptReleaseContext(hProv, dwFlags);
+    KWCRYPT_LOG(("CryptReleaseContext(%p,%#x) -> %d\n", hProv, dwFlags, fRet));
+    return fRet;
+}
+
+
+/** AdvApi32 - CryptContextAddRef  */
+static BOOL WINAPI kwSandbox_Advapi32_CryptContextAddRef(HCRYPTPROV hProv, DWORD *pdwReserved, DWORD dwFlags)
+{
+    BOOL fRet = CryptContextAddRef(hProv, pdwReserved, dwFlags);
+    KWCRYPT_LOG(("CryptContextAddRef(%p,%p,%#x) -> %d\n", hProv, pdwReserved, dwFlags, fRet));
+    return fRet;
+}
+
+#endif /* WITH_CRYPT_CTX_REUSE */
+
+/*
+ *
+ * Structured exception handling.
+ * Structured exception handling.
+ * Structured exception handling.
+ *
+ */
+#if defined(KBUILD_OS_WINDOWS) && defined(KBUILD_ARCH_X86)
+
+# define EH_NONCONTINUABLE      KU32_C(0x00000001)
+# define EH_UNWINDING           KU32_C(0x00000002)
+# define EH_EXIT_UNWIND         KU32_C(0x00000004)
+# define EH_STACK_INVALID       KU32_C(0x00000008)
+# define EH_NESTED_CALL         KU32_C(0x00000010)
+
+typedef KU32 (__cdecl * volatile PFNXCPTHANDLER)(PEXCEPTION_RECORD, struct _EXCEPTION_REGISTRATION_RECORD*, PCONTEXT,
+                                                 struct _EXCEPTION_REGISTRATION_RECORD * volatile *);
+typedef struct _EXCEPTION_REGISTRATION_RECORD
+{
+    struct _EXCEPTION_REGISTRATION_RECORD * volatile    pPrevRegRec;
+    PFNXCPTHANDLER                                      pfnXcptHandler;
+};
+
+
+/**
+ * Calls @a pfnHandler.
+ */
+static KU32 kwSandboxXcptCallHandler(PEXCEPTION_RECORD pXcptRec, struct _EXCEPTION_REGISTRATION_RECORD *pRegRec,
+                                     PCONTEXT pXcptCtx, struct _EXCEPTION_REGISTRATION_RECORD * volatile * ppRegRec,
+                                     PFNXCPTHANDLER pfnHandler)
+{
+# if 1
+    /* This is a more robust version that isn't subject to calling
+       convension cleanup disputes and such. */
+    KU32 uSavedEdi;
+    KU32 uSavedEsi;
+    KU32 uSavedEbx;
+    KU32 rcHandler;
+
+    __asm
+    {
+        mov     [uSavedEdi], edi
+        mov     [uSavedEsi], esi
+        mov     [uSavedEbx], ebx
+        mov     esi, esp
+        mov     edi, esp
+        mov     edi, [pXcptRec]
+        mov     edx, [pRegRec]
+        mov     eax, [pXcptCtx]
+        mov     ebx, [ppRegRec]
+        mov     ecx, [pfnHandler]
+        sub     esp, 16
+        and     esp, 0fffffff0h
+        mov     [esp     ], edi
+        mov     [esp +  4], edx
+        mov     [esp +  8], eax
+        mov     [esp + 12], ebx
+        mov     edi, esi
+        call    ecx
+        mov     esp, esi
+        cmp     esp, edi
+        je      stack_ok
+        int     3
+    stack_ok:
+        mov     edi, [uSavedEdi]
+        mov     esi, [uSavedEsi]
+        mov     ebx, [uSavedEbx]
+        mov     [rcHandler], eax
+    }
+    return rcHandler;
+# else
+    return pfnHandler(pXcptRec, pRegRec, pXctpCtx, ppRegRec);
+# endif
+}
+
+
+/**
+ * Vectored exception handler that emulates x86 chained exception handler.
+ *
+ * This is necessary because the RtlIsValidHandler check fails for self loaded
+ * code and prevents cl.exe from working.  (On AMD64 we can register function
+ * tables, but on X86 cooking your own handling seems to be the only viabke
+ * alternative.)
+ *
+ * @returns EXCEPTION_CONTINUE_SEARCH or EXCEPTION_CONTINUE_EXECUTION.
+ * @param   pXcptPtrs           The exception details.
+ */
+static LONG CALLBACK kwSandboxVecXcptEmulateChained(PEXCEPTION_POINTERS pXcptPtrs)
+{
+    PNT_TIB pTib = (PNT_TIB)NtCurrentTeb();
+    KW_LOG(("kwSandboxVecXcptEmulateChained: %#x\n", pXcptPtrs->ExceptionRecord->ExceptionCode));
+    if (g_Sandbox.fRunning)
+    {
+        HANDLE const                                      hCurProc = GetCurrentProcess();
+        PEXCEPTION_RECORD                                 pXcptRec = pXcptPtrs->ExceptionRecord;
+        PCONTEXT                                          pXcptCtx = pXcptPtrs->ContextRecord;
+        struct _EXCEPTION_REGISTRATION_RECORD *           pRegRec  = pTib->ExceptionList;
+        while (((KUPTR)pRegRec & (sizeof(void *) - 3)) == 0 && pRegRec != NULL)
+        {
+            /* Read the exception record in a safe manner. */
+            struct _EXCEPTION_REGISTRATION_RECORD   RegRec;
+            DWORD                                   cbActuallyRead = 0;
+            if (   ReadProcessMemory(hCurProc, pRegRec, &RegRec, sizeof(RegRec), &cbActuallyRead)
+                && cbActuallyRead == sizeof(RegRec))
+            {
+                struct _EXCEPTION_REGISTRATION_RECORD * volatile    pDispRegRec = NULL;
+                KU32                                                rcHandler;
+                KW_LOG(("kwSandboxVecXcptEmulateChained: calling %p, pRegRec=%p, pPrevRegRec=%p\n",
+                        RegRec.pfnXcptHandler, pRegRec, RegRec.pPrevRegRec));
+                rcHandler = kwSandboxXcptCallHandler(pXcptRec, pRegRec, pXcptCtx, &pDispRegRec, RegRec.pfnXcptHandler);
+                KW_LOG(("kwSandboxVecXcptEmulateChained: rcHandler=%#x pDispRegRec=%p\n", rcHandler, pDispRegRec));
+                if (rcHandler == ExceptionContinueExecution)
+                {
+                    kHlpAssert(!(pXcptPtrs->ExceptionRecord->ExceptionFlags & EXCEPTION_NONCONTINUABLE));
+                    KW_LOG(("kwSandboxVecXcptEmulateChained: returning EXCEPTION_CONTINUE_EXECUTION!\n"));
+                    return EXCEPTION_CONTINUE_EXECUTION;
+                }
+
+                if (rcHandler == ExceptionContinueSearch)
+                    kHlpAssert(!(pXcptPtrs->ExceptionRecord->ExceptionFlags & 8 /*EXCEPTION_STACK_INVALID*/));
+                else if (rcHandler == ExceptionNestedException)
+                    kHlpAssertMsgFailed(("Nested exceptions.\n"));
+                else
+                    kHlpAssertMsgFailed(("Invalid return %#x (%d).\n", rcHandler, rcHandler));
+            }
+            else
+            {
+                KW_LOG(("kwSandboxVecXcptEmulateChained: Bad xcpt chain entry at %p! Stopping search.\n", pRegRec));
+                break;
+            }
+
+            /*
+             * Next.
+             */
+            pRegRec = RegRec.pPrevRegRec;
+        }
+    }
+    return EXCEPTION_CONTINUE_SEARCH;
+}
+
+
+/** NtDll,Kernel32 - RtlUnwind */
+static VOID WINAPI kwSandbox_ntdll_RtlUnwind(struct _EXCEPTION_REGISTRATION_RECORD *pStopXcptRec, PVOID pvTargetIp,
+                                             PEXCEPTION_RECORD pXcptRec, PVOID pvReturnValue)
+{
+    PNT_TIB pTib = (PNT_TIB)NtCurrentTeb();
+    KW_LOG(("kwSandbox_ntdll_RtlUnwind: pStopXcptRec=%p pvTargetIp=%p pXctpRec=%p pvReturnValue=%p%s\n",
+            pStopXcptRec, pvTargetIp, pXcptRec, pvReturnValue, g_Sandbox.fRunning ? "" : " [sandbox not running]"));
+    if (g_Sandbox.fRunning)
+    {
+        HANDLE const                                      hCurProc = GetCurrentProcess();
+        PCONTEXT                                          pXcptCtx = NULL;
+        struct _EXCEPTION_REGISTRATION_RECORD *           pRegRec  = pTib->ExceptionList;
+
+        /*
+         * Update / create an exception record.
+         */
+        if (pXcptRec)
+            pXcptRec->ExceptionFlags |= EH_UNWINDING;
+        else
+        {
+            pXcptRec = (PEXCEPTION_RECORD)alloca(sizeof(*pXcptRec));
+            kHlpMemSet(pXcptRec, 0, sizeof(*pXcptRec));
+            pXcptRec->ExceptionCode  = (DWORD)STATUS_UNWIND;
+            pXcptRec->ExceptionFlags = EH_UNWINDING;
+        }
+        if (!pStopXcptRec)
+            pXcptRec->ExceptionFlags |= EH_EXIT_UNWIND;
+
+        /*
+         * Walk the chain till we find pStopXctpRec.
+         */
+        while (   ((KUPTR)pRegRec & (sizeof(void *) - 3)) == 0
+               && pRegRec != NULL
+               && pRegRec != pStopXcptRec)
+        {
+            /* Read the exception record in a safe manner. */
+            struct _EXCEPTION_REGISTRATION_RECORD   RegRec;
+            DWORD                                   cbActuallyRead = 0;
+            if (   ReadProcessMemory(hCurProc, pRegRec, &RegRec, sizeof(RegRec), &cbActuallyRead)
+                && cbActuallyRead == sizeof(RegRec))
+            {
+                struct _EXCEPTION_REGISTRATION_RECORD * volatile    pDispRegRec = NULL;
+                KU32                                                rcHandler;
+                KW_LOG(("kwSandbox_ntdll_RtlUnwind: calling %p, pRegRec=%p, pPrevRegRec=%p\n",
+                        RegRec.pfnXcptHandler, pRegRec, RegRec.pPrevRegRec));
+                rcHandler = kwSandboxXcptCallHandler(pXcptRec, pRegRec, pXcptCtx, &pDispRegRec, RegRec.pfnXcptHandler);
+                KW_LOG(("kwSandbox_ntdll_RtlUnwind: rcHandler=%#x pDispRegRec=%p\n", rcHandler, pDispRegRec));
+
+                if (rcHandler == ExceptionContinueSearch)
+                    kHlpAssert(!(pXcptRec->ExceptionFlags & 8 /*EXCEPTION_STACK_INVALID*/));
+                else if (rcHandler == ExceptionCollidedUnwind)
+                    kHlpAssertMsgFailed(("Implement collided unwind!\n"));
+                else
+                    kHlpAssertMsgFailed(("Invalid return %#x (%d).\n", rcHandler, rcHandler));
+            }
+            else
+            {
+                KW_LOG(("kwSandbox_ntdll_RtlUnwind: Bad xcpt chain entry at %p! Stopping search.\n", pRegRec));
+                break;
+            }
+
+            /*
+             * Pop next.
+             */
+            pTib->ExceptionList = RegRec.pPrevRegRec;
+            pRegRec = RegRec.pPrevRegRec;
+        }
+        return;
+    }
+
+    RtlUnwind(pStopXcptRec, pvTargetIp, pXcptRec, pvReturnValue);
+}
+
+#endif /* WINDOWS + X86 */
+
+
+/*
+ *
+ * Misc function only intercepted while debugging.
+ * Misc function only intercepted while debugging.
+ * Misc function only intercepted while debugging.
+ *
+ */
+
+#ifndef NDEBUG
+
+/** CRT - memcpy   */
+static void * __cdecl kwSandbox_msvcrt_memcpy(void *pvDst, void const *pvSrc, size_t cb)
+{
+    KU8 const *pbSrc = (KU8 const *)pvSrc;
+    KU8       *pbDst = (KU8 *)pvDst;
+    KSIZE      cbLeft = cb;
+    while (cbLeft-- > 0)
+        *pbDst++ = *pbSrc++;
+    return pvDst;
+}
+
+
+/** CRT - memset   */
+static void * __cdecl kwSandbox_msvcrt_memset(void *pvDst, int bFiller, size_t cb)
+{
+    KU8       *pbDst = (KU8 *)pvDst;
+    KSIZE      cbLeft = cb;
+    while (cbLeft-- > 0)
+        *pbDst++ = (KU8)bFiller;
+    return pvDst;
+}
+
+#endif /* NDEBUG */
+
+
+/** @todo consider hooking NtQueryDirectoryFile as c1xx.dll/c1.dll in 2019
+ *        uses it directly to read the content of include directories, however
+ *        they do it one file at the time.  We already have the info in the
+ *        cache (where we do bulk reads).  There are a lot of calls for the
+ *        SDK include directories, as one can imagine. */
+
+/**
+ * Functions that needs replacing for sandboxed execution.
+ */
+KWREPLACEMENTFUNCTION const g_aSandboxReplacements[] =
+{
+    /*
+     * Kernel32.dll and friends.
+     */
+    { TUPLE("ExitProcess"),                 NULL,       (KUPTR)kwSandbox_Kernel32_ExitProcess },
+    { TUPLE("TerminateProcess"),            NULL,       (KUPTR)kwSandbox_Kernel32_TerminateProcess },
+
+    { TUPLE("LoadLibraryA"),                NULL,       (KUPTR)kwSandbox_Kernel32_LoadLibraryA },
+    { TUPLE("LoadLibraryW"),                NULL,       (KUPTR)kwSandbox_Kernel32_LoadLibraryW },
+    { TUPLE("LoadLibraryExA"),              NULL,       (KUPTR)kwSandbox_Kernel32_LoadLibraryExA },
+    { TUPLE("LoadLibraryExW"),              NULL,       (KUPTR)kwSandbox_Kernel32_LoadLibraryExW },
+    { TUPLE("FreeLibrary"),                 NULL,       (KUPTR)kwSandbox_Kernel32_FreeLibrary },
+    { TUPLE("GetModuleHandleA"),            NULL,       (KUPTR)kwSandbox_Kernel32_GetModuleHandleA },
+    { TUPLE("GetModuleHandleW"),            NULL,       (KUPTR)kwSandbox_Kernel32_GetModuleHandleW },
+    { TUPLE("GetProcAddress"),              NULL,       (KUPTR)kwSandbox_Kernel32_GetProcAddress },
+    { TUPLE("GetModuleFileNameA"),          NULL,       (KUPTR)kwSandbox_Kernel32_GetModuleFileNameA },
+    { TUPLE("GetModuleFileNameW"),          NULL,       (KUPTR)kwSandbox_Kernel32_GetModuleFileNameW },
+    { TUPLE("RtlPcToFileHeader"),           NULL,       (KUPTR)kwSandbox_ntdll_RtlPcToFileHeader },
+
+    { TUPLE("GetCommandLineA"),             NULL,       (KUPTR)kwSandbox_Kernel32_GetCommandLineA },
+    { TUPLE("GetCommandLineW"),             NULL,       (KUPTR)kwSandbox_Kernel32_GetCommandLineW },
+    { TUPLE("GetStartupInfoA"),             NULL,       (KUPTR)kwSandbox_Kernel32_GetStartupInfoA },
+    { TUPLE("GetStartupInfoW"),             NULL,       (KUPTR)kwSandbox_Kernel32_GetStartupInfoW },
+
+    { TUPLE("CreateThread"),                NULL,       (KUPTR)kwSandbox_Kernel32_CreateThread },
+
+    { TUPLE("GetEnvironmentStrings"),       NULL,       (KUPTR)kwSandbox_Kernel32_GetEnvironmentStrings },
+    { TUPLE("GetEnvironmentStringsA"),      NULL,       (KUPTR)kwSandbox_Kernel32_GetEnvironmentStringsA },
+    { TUPLE("GetEnvironmentStringsW"),      NULL,       (KUPTR)kwSandbox_Kernel32_GetEnvironmentStringsW },
+    { TUPLE("FreeEnvironmentStringsA"),     NULL,       (KUPTR)kwSandbox_Kernel32_FreeEnvironmentStringsA },
+    { TUPLE("FreeEnvironmentStringsW"),     NULL,       (KUPTR)kwSandbox_Kernel32_FreeEnvironmentStringsW },
+    { TUPLE("GetEnvironmentVariableA"),     NULL,       (KUPTR)kwSandbox_Kernel32_GetEnvironmentVariableA },
+    { TUPLE("GetEnvironmentVariableW"),     NULL,       (KUPTR)kwSandbox_Kernel32_GetEnvironmentVariableW },
+    { TUPLE("SetEnvironmentVariableA"),     NULL,       (KUPTR)kwSandbox_Kernel32_SetEnvironmentVariableA },
+    { TUPLE("SetEnvironmentVariableW"),     NULL,       (KUPTR)kwSandbox_Kernel32_SetEnvironmentVariableW },
+    { TUPLE("ExpandEnvironmentStringsA"),   NULL,       (KUPTR)kwSandbox_Kernel32_ExpandEnvironmentStringsA },
+    { TUPLE("ExpandEnvironmentStringsW"),   NULL,       (KUPTR)kwSandbox_Kernel32_ExpandEnvironmentStringsW },
+
+    { TUPLE("CreateFileA"),                 NULL,       (KUPTR)kwSandbox_Kernel32_CreateFileA },
+    { TUPLE("CreateFileW"),                 NULL,       (KUPTR)kwSandbox_Kernel32_CreateFileW },
+    { TUPLE("ReadFile"),                    NULL,       (KUPTR)kwSandbox_Kernel32_ReadFile },
+    { TUPLE("ReadFileEx"),                  NULL,       (KUPTR)kwSandbox_Kernel32_ReadFileEx },
+#ifdef WITH_TEMP_MEMORY_FILES
+    { TUPLE("WriteFile"),                   NULL,       (KUPTR)kwSandbox_Kernel32_WriteFile },
+    { TUPLE("WriteFileEx"),                 NULL,       (KUPTR)kwSandbox_Kernel32_WriteFileEx },
+    { TUPLE("SetEndOfFile"),                NULL,       (KUPTR)kwSandbox_Kernel32_SetEndOfFile },
+    { TUPLE("GetFileType"),                 NULL,       (KUPTR)kwSandbox_Kernel32_GetFileType },
+    { TUPLE("GetFileSize"),                 NULL,       (KUPTR)kwSandbox_Kernel32_GetFileSize },
+    { TUPLE("GetFileSizeEx"),               NULL,       (KUPTR)kwSandbox_Kernel32_GetFileSizeEx },
+    { TUPLE("CreateFileMappingW"),          NULL,       (KUPTR)kwSandbox_Kernel32_CreateFileMappingW },
+    { TUPLE("MapViewOfFile"),               NULL,       (KUPTR)kwSandbox_Kernel32_MapViewOfFile },
+    { TUPLE("MapViewOfFileEx"),             NULL,       (KUPTR)kwSandbox_Kernel32_MapViewOfFileEx },
+    { TUPLE("UnmapViewOfFile"),             NULL,       (KUPTR)kwSandbox_Kernel32_UnmapViewOfFile },
+#endif
+    { TUPLE("SetFilePointer"),              NULL,       (KUPTR)kwSandbox_Kernel32_SetFilePointer },
+    { TUPLE("SetFilePointerEx"),            NULL,       (KUPTR)kwSandbox_Kernel32_SetFilePointerEx },
+    { TUPLE("DuplicateHandle"),             NULL,       (KUPTR)kwSandbox_Kernel32_DuplicateHandle },
+    { TUPLE("CloseHandle"),                 NULL,       (KUPTR)kwSandbox_Kernel32_CloseHandle },
+    { TUPLE("GetFileAttributesA"),          NULL,       (KUPTR)kwSandbox_Kernel32_GetFileAttributesA },
+    { TUPLE("GetFileAttributesW"),          NULL,       (KUPTR)kwSandbox_Kernel32_GetFileAttributesW },
+    { TUPLE("GetFileAttributesExA"),        NULL,       (KUPTR)kwSandbox_Kernel32_GetFileAttributesExA },
+    { TUPLE("GetFileAttributesExW"),        NULL,       (KUPTR)kwSandbox_Kernel32_GetFileAttributesExW },
+    { TUPLE("GetShortPathNameW"),           NULL,       (KUPTR)kwSandbox_Kernel32_GetShortPathNameW },
+#ifdef WITH_TEMP_MEMORY_FILES
+    { TUPLE("DeleteFileW"),                 NULL,       (KUPTR)kwSandbox_Kernel32_DeleteFileW },
+#endif
+
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+    { TUPLE("WriteConsoleA"),               NULL,       (KUPTR)kwSandbox_Kernel32_WriteConsoleA },
+    { TUPLE("WriteConsoleW"),               NULL,       (KUPTR)kwSandbox_Kernel32_WriteConsoleW },
+#endif
+
+    { TUPLE("VirtualAlloc"),                NULL,       (KUPTR)kwSandbox_Kernel32_VirtualAlloc },
+    { TUPLE("VirtualFree"),                 NULL,       (KUPTR)kwSandbox_Kernel32_VirtualFree },
+
+    { TUPLE("HeapCreate"),                  NULL,       (KUPTR)kwSandbox_Kernel32_HeapCreate,       K_TRUE /*fOnlyExe*/ },
+    { TUPLE("HeapDestroy"),                 NULL,       (KUPTR)kwSandbox_Kernel32_HeapDestroy,      K_TRUE /*fOnlyExe*/ },
+
+    { TUPLE("FlsAlloc"),                    NULL,       (KUPTR)kwSandbox_Kernel32_FlsAlloc,         K_TRUE /*fOnlyExe*/ },
+    { TUPLE("FlsFree"),                     NULL,       (KUPTR)kwSandbox_Kernel32_FlsFree,          K_TRUE /*fOnlyExe*/ },
+    { TUPLE("TlsAlloc"),                    NULL,       (KUPTR)kwSandbox_Kernel32_TlsAlloc,         K_TRUE /*fOnlyExe*/ },
+    { TUPLE("TlsFree"),                     NULL,       (KUPTR)kwSandbox_Kernel32_TlsFree,          K_TRUE /*fOnlyExe*/ },
+
+    { TUPLE("SetConsoleCtrlHandler"),       NULL,       (KUPTR)kwSandbox_Kernel32_SetConsoleCtrlHandler },
+
+#if defined(KBUILD_OS_WINDOWS) && defined(KBUILD_ARCH_X86)
+    { TUPLE("RtlUnwind"),                   NULL,       (KUPTR)kwSandbox_ntdll_RtlUnwind },
+#endif
+
+#ifdef WITH_HASH_CACHE
+    { TUPLE("CryptCreateHash"),             NULL,       (KUPTR)kwSandbox_Advapi32_CryptCreateHash },
+    { TUPLE("CryptHashData"),               NULL,       (KUPTR)kwSandbox_Advapi32_CryptHashData },
+    { TUPLE("CryptGetHashParam"),           NULL,       (KUPTR)kwSandbox_Advapi32_CryptGetHashParam },
+    { TUPLE("CryptDestroyHash"),            NULL,       (KUPTR)kwSandbox_Advapi32_CryptDestroyHash },
+#endif
+
+#ifdef WITH_CRYPT_CTX_REUSE
+    { TUPLE("CryptAcquireContextW"),        NULL,       (KUPTR)kwSandbox_Advapi32_CryptAcquireContextW },
+    { TUPLE("CryptReleaseContext"),         NULL,       (KUPTR)kwSandbox_Advapi32_CryptReleaseContext },
+    { TUPLE("CryptContextAddRef"),          NULL,       (KUPTR)kwSandbox_Advapi32_CryptContextAddRef },
+#endif
+
+    /*
+     * MS Visual C++ CRTs.
+     */
+    { TUPLE("exit"),                        NULL,       (KUPTR)kwSandbox_msvcrt_exit },
+    { TUPLE("_exit"),                       NULL,       (KUPTR)kwSandbox_msvcrt__exit },
+    { TUPLE("_cexit"),                      NULL,       (KUPTR)kwSandbox_msvcrt__cexit },
+    { TUPLE("_c_exit"),                     NULL,       (KUPTR)kwSandbox_msvcrt__c_exit },
+    { TUPLE("_amsg_exit"),                  NULL,       (KUPTR)kwSandbox_msvcrt__amsg_exit },
+    { TUPLE("terminate"),                   NULL,       (KUPTR)kwSandbox_msvcrt_terminate },
+
+    { TUPLE("onexit"),                      NULL,       (KUPTR)kwSandbox_msvcrt__onexit,            K_TRUE /*fOnlyExe*/ },
+    { TUPLE("_onexit"),                     NULL,       (KUPTR)kwSandbox_msvcrt__onexit,            K_TRUE /*fOnlyExe*/ },
+    { TUPLE("atexit"),                      NULL,       (KUPTR)kwSandbox_msvcrt_atexit,             K_TRUE /*fOnlyExe*/ },
+
+    { TUPLE("_beginthread"),                NULL,       (KUPTR)kwSandbox_msvcrt__beginthread },
+    { TUPLE("_beginthreadex"),              NULL,       (KUPTR)kwSandbox_msvcrt__beginthreadex, K_FALSE /*fOnlyExe*/, K_TRUE /*fCrtSlotArray*/ },
+    { TUPLE("_beginthreadex"),          "msvcr120.dll", (KUPTR)kwSandbox_msvcr120__beginthreadex }, /* higher priority last */
+
+    { TUPLE("__argc"),                      NULL,       (KUPTR)&g_Sandbox.cArgs },
+    { TUPLE("__argv"),                      NULL,       (KUPTR)&g_Sandbox.papszArgs },
+    { TUPLE("__wargv"),                     NULL,       (KUPTR)&g_Sandbox.papwszArgs },
+    { TUPLE("__p___argc"),                  NULL,       (KUPTR)kwSandbox_msvcrt___p___argc },
+    { TUPLE("__p___argv"),                  NULL,       (KUPTR)kwSandbox_msvcrt___p___argv },
+    { TUPLE("__p___wargv"),                 NULL,       (KUPTR)kwSandbox_msvcrt___p___wargv },
+    { TUPLE("_acmdln"),                     NULL,       (KUPTR)&g_Sandbox.pszCmdLine },
+    { TUPLE("_wcmdln"),                     NULL,       (KUPTR)&g_Sandbox.pwszCmdLine },
+    { TUPLE("__p__acmdln"),                 NULL,       (KUPTR)kwSandbox_msvcrt___p__acmdln },
+    { TUPLE("__p__wcmdln"),                 NULL,       (KUPTR)kwSandbox_msvcrt___p__wcmdln },
+    { TUPLE("_pgmptr"),                     NULL,       (KUPTR)&g_Sandbox.pgmptr  },
+    { TUPLE("_wpgmptr"),                    NULL,       (KUPTR)&g_Sandbox.wpgmptr },
+    { TUPLE("_get_pgmptr"),                 NULL,       (KUPTR)kwSandbox_msvcrt__get_pgmptr },
+    { TUPLE("_get_wpgmptr"),                NULL,       (KUPTR)kwSandbox_msvcrt__get_wpgmptr },
+    { TUPLE("__p__pgmptr"),                 NULL,       (KUPTR)kwSandbox_msvcrt___p__pgmptr },
+    { TUPLE("__p__wpgmptr"),                NULL,       (KUPTR)kwSandbox_msvcrt___p__wpgmptr },
+    { TUPLE("_wincmdln"),                   NULL,       (KUPTR)kwSandbox_msvcrt__wincmdln },
+    { TUPLE("_wwincmdln"),                  NULL,       (KUPTR)kwSandbox_msvcrt__wwincmdln },
+    { TUPLE("__getmainargs"),               NULL,       (KUPTR)kwSandbox_msvcrt___getmainargs},
+    { TUPLE("__wgetmainargs"),              NULL,       (KUPTR)kwSandbox_msvcrt___wgetmainargs},
+
+    { TUPLE("_putenv"),                     NULL,       (KUPTR)kwSandbox_msvcrt__putenv},
+    { TUPLE("_wputenv"),                    NULL,       (KUPTR)kwSandbox_msvcrt__wputenv},
+    { TUPLE("_putenv_s"),                   NULL,       (KUPTR)kwSandbox_msvcrt__putenv_s},
+    { TUPLE("_wputenv_s"),                  NULL,       (KUPTR)kwSandbox_msvcrt__wputenv_s},
+    { TUPLE("__initenv"),                   NULL,       (KUPTR)&g_Sandbox.initenv },
+    { TUPLE("__winitenv"),                  NULL,       (KUPTR)&g_Sandbox.winitenv },
+    { TUPLE("__p___initenv"),               NULL,       (KUPTR)kwSandbox_msvcrt___p___initenv},
+    { TUPLE("__p___winitenv"),              NULL,       (KUPTR)kwSandbox_msvcrt___p___winitenv},
+    { TUPLE("_environ"),                    NULL,       (KUPTR)&g_Sandbox.environ },
+    { TUPLE("_wenviron"),                   NULL,       (KUPTR)&g_Sandbox.wenviron },
+    { TUPLE("_get_environ"),                NULL,       (KUPTR)kwSandbox_msvcrt__get_environ },
+    { TUPLE("_get_wenviron"),               NULL,       (KUPTR)kwSandbox_msvcrt__get_wenviron },
+    { TUPLE("__p__environ"),                NULL,       (KUPTR)kwSandbox_msvcrt___p__environ },
+    { TUPLE("__p__wenviron"),               NULL,       (KUPTR)kwSandbox_msvcrt___p__wenviron },
+
+#ifndef NDEBUG
+    { TUPLE("memcpy"),                      NULL,       (KUPTR)kwSandbox_msvcrt_memcpy },
+    { TUPLE("memset"),                      NULL,       (KUPTR)kwSandbox_msvcrt_memset },
+#endif
+};
+/** Number of entries in g_aReplacements. */
+KU32 const                  g_cSandboxReplacements = K_ELEMENTS(g_aSandboxReplacements);
+
+
+/**
+ * Functions that needs replacing in natively loaded DLLs when doing sandboxed
+ * execution.
+ */
+KWREPLACEMENTFUNCTION const g_aSandboxNativeReplacements[] =
+{
+    /*
+     * Kernel32.dll and friends.
+     */
+    { TUPLE("ExitProcess"),                 NULL,       (KUPTR)kwSandbox_Kernel32_ExitProcess },
+    { TUPLE("TerminateProcess"),            NULL,       (KUPTR)kwSandbox_Kernel32_TerminateProcess },
+
+    { TUPLE("GetCommandLineA"),             NULL,       (KUPTR)kwSandbox_Kernel32_GetCommandLineA },
+    { TUPLE("GetCommandLineW"),             NULL,       (KUPTR)kwSandbox_Kernel32_GetCommandLineW },
+
+#if 0
+    { TUPLE("CreateThread"),                NULL,       (KUPTR)kwSandbox_Kernel32_CreateThread },
+#endif
+
+    { TUPLE("CreateFileA"),                 NULL,       (KUPTR)kwSandbox_Kernel32_CreateFileA },
+    { TUPLE("CreateFileW"),                 NULL,       (KUPTR)kwSandbox_Kernel32_CreateFileW },
+    { TUPLE("ReadFile"),                    NULL,       (KUPTR)kwSandbox_Kernel32_ReadFile },
+    { TUPLE("ReadFileEx"),                  NULL,       (KUPTR)kwSandbox_Kernel32_ReadFileEx },
+#ifdef WITH_TEMP_MEMORY_FILES
+    { TUPLE("WriteFile"),                   NULL,       (KUPTR)kwSandbox_Kernel32_WriteFile },
+    { TUPLE("WriteFileEx"),                 NULL,       (KUPTR)kwSandbox_Kernel32_WriteFileEx },
+    { TUPLE("SetEndOfFile"),                NULL,       (KUPTR)kwSandbox_Kernel32_SetEndOfFile },
+    { TUPLE("GetFileType"),                 NULL,       (KUPTR)kwSandbox_Kernel32_GetFileType },
+    { TUPLE("GetFileSize"),                 NULL,       (KUPTR)kwSandbox_Kernel32_GetFileSize },
+    { TUPLE("GetFileSizeEx"),               NULL,       (KUPTR)kwSandbox_Kernel32_GetFileSizeEx },
+    { TUPLE("CreateFileMappingW"),          NULL,       (KUPTR)kwSandbox_Kernel32_CreateFileMappingW },
+    { TUPLE("MapViewOfFile"),               NULL,       (KUPTR)kwSandbox_Kernel32_MapViewOfFile },
+    { TUPLE("MapViewOfFileEx"),             NULL,       (KUPTR)kwSandbox_Kernel32_MapViewOfFileEx },
+    { TUPLE("UnmapViewOfFile"),             NULL,       (KUPTR)kwSandbox_Kernel32_UnmapViewOfFile },
+#endif
+    { TUPLE("SetFilePointer"),              NULL,       (KUPTR)kwSandbox_Kernel32_SetFilePointer },
+    { TUPLE("SetFilePointerEx"),            NULL,       (KUPTR)kwSandbox_Kernel32_SetFilePointerEx },
+    { TUPLE("DuplicateHandle"),             NULL,       (KUPTR)kwSandbox_Kernel32_DuplicateHandle },
+    { TUPLE("CloseHandle"),                 NULL,       (KUPTR)kwSandbox_Kernel32_CloseHandle },
+    { TUPLE("GetFileAttributesA"),          NULL,       (KUPTR)kwSandbox_Kernel32_GetFileAttributesA },
+    { TUPLE("GetFileAttributesW"),          NULL,       (KUPTR)kwSandbox_Kernel32_GetFileAttributesW },
+    { TUPLE("GetFileAttributesExA"),        NULL,       (KUPTR)kwSandbox_Kernel32_GetFileAttributesExA },
+    { TUPLE("GetFileAttributesExW"),        NULL,       (KUPTR)kwSandbox_Kernel32_GetFileAttributesExW },
+    { TUPLE("GetShortPathNameW"),           NULL,       (KUPTR)kwSandbox_Kernel32_GetShortPathNameW },
+#ifdef WITH_TEMP_MEMORY_FILES
+    { TUPLE("DeleteFileW"),                 NULL,       (KUPTR)kwSandbox_Kernel32_DeleteFileW },
+#endif
+    { TUPLE("SetConsoleCtrlHandler"),       NULL,       (KUPTR)kwSandbox_Kernel32_SetConsoleCtrlHandler },
+    { TUPLE("LoadLibraryExA"),              NULL,       (KUPTR)kwSandbox_Kernel32_Native_LoadLibraryExA },
+    { TUPLE("LoadLibraryExW"),              NULL,       (KUPTR)kwSandbox_Kernel32_Native_LoadLibraryExW },
+#ifndef NDEBUG
+    { TUPLE("GetProcAddress"),              NULL,       (KUPTR)kwSandbox_Kernel32_Native_GetProcAddress },
+#endif
+
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+    { TUPLE("WriteConsoleA"),               NULL,       (KUPTR)kwSandbox_Kernel32_WriteConsoleA },
+    { TUPLE("WriteConsoleW"),               NULL,       (KUPTR)kwSandbox_Kernel32_WriteConsoleW },
+#endif
+
+#ifdef WITH_HASH_CACHE
+    { TUPLE("CryptCreateHash"),             NULL,       (KUPTR)kwSandbox_Advapi32_CryptCreateHash },
+    { TUPLE("CryptHashData"),               NULL,       (KUPTR)kwSandbox_Advapi32_CryptHashData },
+    { TUPLE("CryptGetHashParam"),           NULL,       (KUPTR)kwSandbox_Advapi32_CryptGetHashParam },
+    { TUPLE("CryptDestroyHash"),            NULL,       (KUPTR)kwSandbox_Advapi32_CryptDestroyHash },
+#endif
+
+    { TUPLE("RtlPcToFileHeader"),           NULL,       (KUPTR)kwSandbox_ntdll_RtlPcToFileHeader },
+
+#if defined(KBUILD_OS_WINDOWS) && defined(KBUILD_ARCH_X86)
+    { TUPLE("RtlUnwind"),                   NULL,       (KUPTR)kwSandbox_ntdll_RtlUnwind },
+#endif
+
+    /*
+     * MS Visual C++ CRTs.
+     */
+    { TUPLE("exit"),                        NULL,       (KUPTR)kwSandbox_msvcrt_exit },
+    { TUPLE("_exit"),                       NULL,       (KUPTR)kwSandbox_msvcrt__exit },
+    { TUPLE("_cexit"),                      NULL,       (KUPTR)kwSandbox_msvcrt__cexit },
+    { TUPLE("_c_exit"),                     NULL,       (KUPTR)kwSandbox_msvcrt__c_exit },
+    { TUPLE("_amsg_exit"),                  NULL,       (KUPTR)kwSandbox_msvcrt__amsg_exit },
+    { TUPLE("terminate"),                   NULL,       (KUPTR)kwSandbox_msvcrt_terminate },
+    { TUPLE("_wdupenv_s"),                  NULL,       (KUPTR)kwSandbox_msvcrt__wdupenv_s, K_FALSE /*fOnlyExe*/, K_TRUE /*fCrtSlotArray*/ },
+
+#if 0 /* used by mspdbXXX.dll */
+    { TUPLE("_beginthread"),                NULL,       (KUPTR)kwSandbox_msvcrt__beginthread },
+    { TUPLE("_beginthreadex"),              NULL,       (KUPTR)kwSandbox_msvcrt__beginthreadex },
+#endif
+};
+/** Number of entries in g_aSandboxNativeReplacements. */
+KU32 const                  g_cSandboxNativeReplacements = K_ELEMENTS(g_aSandboxNativeReplacements);
+
+
+/**
+ * Functions that needs replacing when queried by GetProcAddress.
+ */
+KWREPLACEMENTFUNCTION const g_aSandboxGetProcReplacements[] =
+{
+    /*
+     * Kernel32.dll and friends.
+     */
+    { TUPLE("FlsAlloc"),                    NULL,       (KUPTR)kwSandbox_Kernel32_FlsAlloc, K_TRUE /*fOnlyExe*/ },
+    { TUPLE("FlsFree"),                     NULL,       (KUPTR)kwSandbox_Kernel32_FlsFree,  K_TRUE /*fOnlyExe*/ },
+    { TUPLE("TlsAlloc"),                    NULL,       (KUPTR)kwSandbox_Kernel32_TlsAlloc, K_TRUE /*fOnlyExe*/ },
+    { TUPLE("TlsFree"),                     NULL,       (KUPTR)kwSandbox_Kernel32_TlsFree,  K_TRUE /*fOnlyExe*/ },
+};
+/** Number of entries in g_aSandboxGetProcReplacements. */
+KU32 const                  g_cSandboxGetProcReplacements = K_ELEMENTS(g_aSandboxGetProcReplacements);
+
+
+/**
+ * Control handler.
+ *
+ * @returns TRUE if handled, FALSE if not.
+ * @param   dwCtrlType          The signal.
+ */
+static BOOL WINAPI kwSandboxCtrlHandler(DWORD dwCtrlType)
+{
+    DWORD        cbIgn;
+    int volatile rc; /* volatile for debugging */
+    int volatile rcPrev;
+    const char  *pszMsg;
+    switch (dwCtrlType)
+    {
+        case CTRL_C_EVENT:
+            rc = 9;
+            pszMsg = "kWorker: Ctrl-C\r\n";
+            break;
+
+        case CTRL_BREAK_EVENT:
+            rc = 10;
+            pszMsg = "kWorker: Ctrl-Break\r\n";
+            break;
+
+        case CTRL_CLOSE_EVENT:
+            rc = 11;
+            pszMsg = "kWorker: console closed\r\n";
+            break;
+
+        case CTRL_LOGOFF_EVENT:
+            rc = 11;
+            pszMsg = "kWorker: logoff event\r\n";
+            break;
+
+        case CTRL_SHUTDOWN_EVENT:
+            rc = 11;
+            pszMsg = "kWorker: shutdown event\r\n";
+            break;
+
+        default:
+            fprintf(stderr, "kwSandboxCtrlHandler: %#x\n", dwCtrlType);
+            return TRUE;
+    }
+
+    /*
+     * Terminate the process after 5 seconds.
+     * If we get here a second time we just terminate the process ourselves.
+     *
+     * Note! We do no try call exit() here as it turned out to deadlock a lot
+     *       flusing file descriptors (stderr back when we first wrote to it).
+     */
+    rcPrev = g_rcCtrlC;
+    g_rcCtrlC = rc;
+    WriteFile(GetStdHandle(STD_ERROR_HANDLE), pszMsg, (DWORD)strlen(pszMsg), &cbIgn, NULL);
+    if (rcPrev == 0)
+    {
+        int i;
+        for (i = 0; i < 10; i++)
+        {
+            CancelIoEx(g_hPipe, NULL); /* wake up idle main thread */
+            Sleep(500);
+        }
+    }
+    TerminateProcess(GetCurrentProcess(), rc);
+    return TRUE;
+}
+
+
+#if 0
+/**
+ * Resets the KWMODULE::fVisited flag for _all_ known modules.
+ */
+static void kwSandboxResetModuleVisited(void)
+{
+    PKWMODULE pMod = g_pModuleHead;
+    while (pMod)
+    {
+        pMod->fVisited = K_FALSE;
+        pMod = pMod->pNextList;
+    }
+}
+
+
+/**
+ * Used by kwSandboxExec to reset the state of the module tree.
+ *
+ * This is done recursively.
+ *
+ * @param   pMod                The root of the tree to consider.
+ */
+static void kwSandboxResetModuleState(PKWMODULE pMod)
+{
+    KWLDR_LOG(("kwSandboxResetModuleState: %d %d %s\n", pMod->fNative, pMod->fVisited, pMod->pszPath));
+    if (!pMod->fNative)
+    {
+        pMod->u.Manual.enmState = KWMODSTATE_NEEDS_BITS;
+        if (!pMod->fVisited) /* Avoid loops. */
+        {
+            KSIZE iImp;
+            pMod->fVisited = K_TRUE;
+            iImp = pMod->u.Manual.cImpMods;
+            while (iImp-- > 0)
+                kwSandboxResetModuleState(pMod->u.Manual.apImpMods[iImp]);
+        }
+    }
+    /* Hack: Re-init mspdbXXX.dll when we want to use a different mspdbsrv.exe instance. */
+    else if (pMod->fReInitOnMsPdbSrvEndpointChange)
+    {
+        const char *pszValue = kwSandboxDoGetEnvA(&g_Sandbox, TUPLE("_MSPDBSRV_ENDPOINT_"));
+        if (pMod->fReInitOnMsPdbSrvEndpointChange == 1)
+        {
+            pMod->fReInitOnMsPdbSrvEndpointChange = 2;
+            pMod->pszMsPdbSrvEndpoint = pszValue ? kHlpStrDup(pszValue) : NULL;
+            KWLDR_LOG(("Not re-initing '%s': first time used (_MSPDBSRV_ENDPOINT_ is '%s')\n",
+                       pMod->pszPath, pszValue ? pszValue : "<null>"));
+        }
+        else if (   (pszValue == NULL && pMod->pszMsPdbSrvEndpoint == NULL)
+                 || (pszValue != NULL && pMod->pszMsPdbSrvEndpoint != NULL && kHlpStrComp(pszValue, pMod->pszMsPdbSrvEndpoint) == 0))
+            KWLDR_LOG(("Not re-initing '%s': _MSPDBSRV_ENDPOINT_ unchanged ('%s')\n",
+                       pMod->pszPath, pszValue ? pszValue : "<null>"));
+        else
+        {
+            KWLDR_LOG(("Re-initing '%s': _MSPDBSRV_ENDPOINT_ changed from '%s' to '%s'\n", pMod->pszPath,
+                       pMod->pszMsPdbSrvEndpoint ? pMod->pszMsPdbSrvEndpoint : "<null>", pszValue ? pszValue : "<null>"));
+            kHlpFree(pMod->pszMsPdbSrvEndpoint);
+            if (pszValue != NULL)
+                pMod->pszMsPdbSrvEndpoint = kHlpStrDup(pszValue);
+            else
+                pMod->pszMsPdbSrvEndpoint = NULL;
+            pMod->fNeedReInit = K_TRUE;
+        }
+    }
+}
+#else
+/**
+ * Used by kwSandboxExec to reset the state of the module tree.
+ */
+static void kwSandboxResetModuleState(void)
+{
+    PKWMODULE pMod = g_pModuleHead;
+    while (pMod)
+    {
+        if (!pMod->fNative)
+            pMod->u.Manual.enmState = K_MIN(pMod->u.Manual.enmReInitState, pMod->u.Manual.enmState);
+        /* Hack: Re-init mspdbXXX.dll when we want to use a different mspdbsrv.exe instance. */
+        else if (   pMod->fReInitOnMsPdbSrvEndpointChange
+                 && (   g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_CL
+                     || g_Sandbox.pTool->u.Sandboxed.enmHint == KWTOOLHINT_VISUAL_CPP_LINK))
+        {
+            const char *pszValue = kwSandboxDoGetEnvA(&g_Sandbox, TUPLE("_MSPDBSRV_ENDPOINT_"));
+            if (pMod->fReInitOnMsPdbSrvEndpointChange == 1)
+            {
+                pMod->fReInitOnMsPdbSrvEndpointChange = 2;
+                pMod->pszMsPdbSrvEndpoint = pszValue ? kHlpStrDup(pszValue) : NULL;
+                KWLDR_LOG(("Not re-initing '%s': first time used (_MSPDBSRV_ENDPOINT_ is '%s')\n",
+                           pMod->pszPath, pszValue ? pszValue : "<null>"));
+            }
+            else if (   (pszValue == NULL && pMod->pszMsPdbSrvEndpoint == NULL)
+                     || (pszValue != NULL && pMod->pszMsPdbSrvEndpoint != NULL && kHlpStrComp(pszValue, pMod->pszMsPdbSrvEndpoint) == 0))
+                KWLDR_LOG(("Not re-initing '%s': _MSPDBSRV_ENDPOINT_ unchanged ('%s')\n",
+                           pMod->pszPath, pszValue ? pszValue : "<null>"));
+            else
+            {
+                KWLDR_LOG(("Re-initing '%s': _MSPDBSRV_ENDPOINT_ changed from '%s' to '%s'\n", pMod->pszPath,
+                           pMod->pszMsPdbSrvEndpoint ? pMod->pszMsPdbSrvEndpoint : "<null>", pszValue ? pszValue : "<null>"));
+                kHlpFree(pMod->pszMsPdbSrvEndpoint);
+                if (pszValue != NULL)
+                    pMod->pszMsPdbSrvEndpoint = kHlpStrDup(pszValue);
+                else
+                    pMod->pszMsPdbSrvEndpoint = NULL;
+                pMod->fNeedReInit = K_TRUE;
+            }
+        }
+
+        pMod = pMod->pNextList;
+    }
+}
+#endif
+
+static PPEB kwSandboxGetProcessEnvironmentBlock(void)
+{
+#if K_ARCH == K_ARCH_X86_32
+    return (PPEB)__readfsdword(0x030 /* offset of ProcessEnvironmentBlock in TEB */);
+#elif K_ARCH == K_ARCH_AMD64
+    return (PPEB)__readgsqword(0x060 /* offset of ProcessEnvironmentBlock in TEB */);
+#else
+# error "Port me!"
+#endif
+}
+
+
+/**
+ * Enters the given handle into the handle table.
+ *
+ * @returns K_TRUE on success, K_FALSE on failure.
+ * @param   pSandbox            The sandbox.
+ * @param   pHandle             The handle.
+ * @param   hHandle             The handle value to enter it under (for the
+ *                              duplicate handle API).
+ */
+static KBOOL kwSandboxHandleTableEnter(PKWSANDBOX pSandbox, PKWHANDLE pHandle, HANDLE hHandle)
+{
+    KUPTR const idxHandle = KW_HANDLE_TO_INDEX(hHandle);
+    kHlpAssertReturn(idxHandle < KW_HANDLE_MAX, K_FALSE);
+
+    EnterCriticalSection(&g_Sandbox.HandlesLock);
+
+    /*
+     * Grow handle table.
+     */
+    if (idxHandle >= pSandbox->cHandles)
+    {
+        void *pvNew;
+        KU32  cHandles = pSandbox->cHandles ? pSandbox->cHandles * 2 : 32;
+        while (cHandles <= idxHandle)
+            cHandles *= 2;
+        pvNew = kHlpRealloc(pSandbox->papHandles, cHandles * sizeof(pSandbox->papHandles[0]));
+        if (!pvNew)
+        {
+            LeaveCriticalSection(&g_Sandbox.HandlesLock);
+            KW_LOG(("Out of memory growing handle table to %u handles\n", cHandles));
+            return K_FALSE;
+        }
+        pSandbox->papHandles = (PKWHANDLE *)pvNew;
+        kHlpMemSet(&pSandbox->papHandles[pSandbox->cHandles], 0,
+                   (cHandles - pSandbox->cHandles) * sizeof(pSandbox->papHandles[0]));
+        pSandbox->cHandles = cHandles;
+    }
+
+    /*
+     * Check that the entry is unused then insert it.
+     */
+    kHlpAssertStmtReturn(pSandbox->papHandles[idxHandle] == NULL, LeaveCriticalSection(&g_Sandbox.HandlesLock), K_FALSE);
+    pSandbox->papHandles[idxHandle] = pHandle;
+    pSandbox->cActiveHandles++;
+    LeaveCriticalSection(&g_Sandbox.HandlesLock);
+    return K_TRUE;
+}
+
+
+/**
+ * Safely looks up a handle, does not get it and it must not be 'put'.
+ *
+ * @returns Pointer to the handle structure if found, otherwise NULL.
+ * @param   hFile               The handle to resolve.
+ */
+static PKWHANDLE kwSandboxHandleLookup(HANDLE hFile)
+{
+    KUPTR const idxHandle = KW_HANDLE_TO_INDEX(hFile);
+    EnterCriticalSection(&g_Sandbox.HandlesLock);
+    if (idxHandle < g_Sandbox.cHandles)
+    {
+        PKWHANDLE pHandle = g_Sandbox.papHandles[idxHandle];
+        LeaveCriticalSection(&g_Sandbox.HandlesLock);
+        return pHandle;
+    }
+    LeaveCriticalSection(&g_Sandbox.HandlesLock);
+    return NULL;
+}
+
+
+/**
+ * Safely gets a handle, must be "put" when done with it.
+ *
+ * @returns Pointer to the handle structure if found, otherwise NULL.
+ * @param   hFile               The handle to resolve.
+ */
+static PKWHANDLE kwSandboxHandleGet(HANDLE hFile)
+{
+    KUPTR const idxHandle = KW_HANDLE_TO_INDEX(hFile);
+    EnterCriticalSection(&g_Sandbox.HandlesLock);
+    if (idxHandle < g_Sandbox.cHandles)
+    {
+        PKWHANDLE pHandle = g_Sandbox.papHandles[idxHandle];
+        if (pHandle)
+        {
+            kHlpAssertMsg(pHandle->tidOwner == KU32_MAX, ("hFile=%p tidOwner=%#x\n", hFile, pHandle->tidOwner));
+            pHandle->tidOwner = GetCurrentThreadId();
+            LeaveCriticalSection(&g_Sandbox.HandlesLock);
+            return pHandle;
+        }
+    }
+    LeaveCriticalSection(&g_Sandbox.HandlesLock);
+    return NULL;
+}
+
+
+/**
+ * Puts a handle returned by kwSandboxHandleGet.
+ *
+ * @param   pHandle             The handle to "put".
+ */
+K_INLINE void kwSandboxHandlePut(PKWHANDLE pHandle)
+{
+    kHlpAssertMsg(pHandle->tidOwner == GetCurrentThreadId(),
+                  ("hFile tidOwner=%#x tidMe=%#x\n", pHandle->hHandle, pHandle->tidOwner, GetCurrentThreadId()));
+    pHandle->tidOwner = KU32_MAX;
+}
+
+
+/**
+ * Creates a correctly quoted ANSI command line string from the given argv.
+ *
+ * @returns Pointer to the command line.
+ * @param   cArgs               Number of arguments.
+ * @param   papszArgs           The argument vector.
+ * @param   fWatcomBrainDamange Whether to apply watcom rules while quoting.
+ * @param   pcbCmdLine          Where to return the command line length,
+ *                              including one terminator.
+ */
+static char *kwSandboxInitCmdLineFromArgv(KU32 cArgs, const char **papszArgs, KBOOL fWatcomBrainDamange, KSIZE *pcbCmdLine)
+{
+    KU32    i;
+    KSIZE   cbCmdLine;
+    char   *pszCmdLine;
+
+    /* Make a copy of the argument vector that we'll be quoting. */
+    char **papszQuotedArgs = alloca(sizeof(papszArgs[0]) * (cArgs + 1));
+    kHlpMemCopy(papszQuotedArgs, papszArgs, sizeof(papszArgs[0]) * (cArgs + 1));
+
+    /* Quote the arguments that need it. */
+    quote_argv(cArgs, papszQuotedArgs, fWatcomBrainDamange, 0 /*leak*/);
+
+    /* figure out cmd line length. */
+    cbCmdLine = 0;
+    for (i = 0; i < cArgs; i++)
+        cbCmdLine += kHlpStrLen(papszQuotedArgs[i]) + 1;
+    *pcbCmdLine = cbCmdLine;
+
+    pszCmdLine = (char *)kHlpAlloc(cbCmdLine + 1);
+    if (pszCmdLine)
+    {
+        char *psz = kHlpStrPCopy(pszCmdLine, papszQuotedArgs[0]);
+        if (papszQuotedArgs[0] != papszArgs[0])
+            free(papszQuotedArgs[0]);
+
+        for (i = 1; i < cArgs; i++)
+        {
+            *psz++ = ' ';
+            psz = kHlpStrPCopy(psz, papszQuotedArgs[i]);
+            if (papszQuotedArgs[i] != papszArgs[i])
+                free(papszQuotedArgs[i]);
+        }
+        kHlpAssert((KSIZE)(&psz[1] - pszCmdLine) == cbCmdLine);
+
+        *psz++ = '\0';
+        *psz++ = '\0';
+    }
+
+    return pszCmdLine;
+}
+
+
+
+static int kwSandboxInit(PKWSANDBOX pSandbox, PKWTOOL pTool,
+                         KU32 cArgs, const char **papszArgs, KBOOL fWatcomBrainDamange,
+                         KU32 cEnvVars, const char **papszEnvVars, KBOOL fNoPchCaching)
+{
+    PPEB pPeb = kwSandboxGetProcessEnvironmentBlock();
+    PMY_RTL_USER_PROCESS_PARAMETERS pProcParams = (PMY_RTL_USER_PROCESS_PARAMETERS)pPeb->ProcessParameters;
+    wchar_t *pwcPool;
+    KSIZE cbStrings;
+    KSIZE cwc;
+    KSIZE cbCmdLine;
+    KU32 i;
+
+    /* Simple stuff. */
+    pSandbox->rcExitCode    = 256;
+    pSandbox->pTool         = pTool;
+    pSandbox->idMainThread  = GetCurrentThreadId();
+    pSandbox->pgmptr        = (char *)pTool->pszPath;
+    pSandbox->wpgmptr       = (wchar_t *)pTool->pwszPath;
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+    if (pSandbox->StdOut.fIsConsole)
+        pSandbox->StdOut.u.Con.cwcBuf   = 0;
+    else
+        pSandbox->StdOut.u.Fully.cchBuf = 0;
+    if (pSandbox->StdErr.fIsConsole)
+        pSandbox->StdErr.u.Con.cwcBuf   = 0;
+    else
+        pSandbox->StdErr.u.Fully.cchBuf = 0;
+    pSandbox->Combined.cwcBuf   = 0;
+    pSandbox->Combined.cFlushes = 0;
+#endif
+    pSandbox->fNoPchCaching = fNoPchCaching;
+    pSandbox->cArgs         = cArgs;
+    pSandbox->papszArgs     = (char **)papszArgs;
+    pSandbox->pszCmdLine    = kwSandboxInitCmdLineFromArgv(cArgs, papszArgs, fWatcomBrainDamange, &cbCmdLine);
+    if (!pSandbox->pszCmdLine)
+        return KERR_NO_MEMORY;
+
+    /*
+     * Convert command line and argv to UTF-16.
+     * We assume each ANSI char requires a surrogate pair in the UTF-16 variant.
+     */
+    pSandbox->papwszArgs = (wchar_t **)kHlpAlloc(sizeof(wchar_t *) * (pSandbox->cArgs + 2) + cbCmdLine * 2 * sizeof(wchar_t));
+    if (!pSandbox->papwszArgs)
+        return KERR_NO_MEMORY;
+    pwcPool = (wchar_t *)&pSandbox->papwszArgs[pSandbox->cArgs + 2];
+    for (i = 0; i < cArgs; i++)
+    {
+        *pwcPool++ = pSandbox->papszArgs[i][-1]; /* flags */
+        pSandbox->papwszArgs[i] = pwcPool;
+        pwcPool += kwStrToUtf16(pSandbox->papszArgs[i], pwcPool, (kHlpStrLen(pSandbox->papszArgs[i]) + 1) * 2);
+        pwcPool++;
+    }
+    pSandbox->papwszArgs[pSandbox->cArgs + 0] = NULL;
+    pSandbox->papwszArgs[pSandbox->cArgs + 1] = NULL;
+
+    /*
+     * Convert the commandline string to UTF-16, same pessimistic approach as above.
+     */
+    cbStrings = (cbCmdLine + 1) * 2 * sizeof(wchar_t);
+    pSandbox->pwszCmdLine = kHlpAlloc(cbStrings);
+    if (!pSandbox->pwszCmdLine)
+        return KERR_NO_MEMORY;
+    cwc = kwStrToUtf16(pSandbox->pszCmdLine, pSandbox->pwszCmdLine, cbStrings / sizeof(wchar_t));
+
+    pSandbox->SavedCommandLine = pProcParams->CommandLine;
+    pProcParams->CommandLine.Buffer = pSandbox->pwszCmdLine;
+    pProcParams->CommandLine.Length = (USHORT)cwc * sizeof(wchar_t);
+
+    /*
+     * Setup the environment.
+     */
+    if (   cEnvVars + 2 <= pSandbox->cEnvVarsAllocated
+        || kwSandboxGrowEnv(pSandbox, cEnvVars + 2) == 0)
+    {
+        KU32 iDst = 0;
+        for (i = 0; i < cEnvVars; i++)
+        {
+            const char *pszVar   = papszEnvVars[i];
+            KSIZE       cchVar   = kHlpStrLen(pszVar);
+            const char *pszEqual;
+            if (   cchVar > 0
+                && (pszEqual = kHlpMemChr(pszVar, '=', cchVar)) != NULL)
+            {
+                char       *pszCopy  = kHlpDup(pszVar, cchVar + 1);
+                wchar_t    *pwszCopy = kwStrToUtf16AllocN(pszVar, cchVar + 1);
+                if (pszCopy && pwszCopy)
+                {
+                    pSandbox->papszEnvVars[iDst]  = pszCopy;
+                    pSandbox->environ[iDst]       = pszCopy;
+                    pSandbox->papwszEnvVars[iDst] = pwszCopy;
+                    pSandbox->wenviron[iDst]      = pwszCopy;
+
+                    /* When we see the path, we must tell the system or native exec and module loading won't work . */
+                    if (   (pszEqual - pszVar) == 4
+                        && (  pszCopy[0] == 'P' || pszCopy[0] == 'p')
+                        && (  pszCopy[1] == 'A' || pszCopy[1] == 'a')
+                        && (  pszCopy[2] == 'T' || pszCopy[2] == 't')
+                        && (  pszCopy[3] == 'H' || pszCopy[3] == 'h'))
+                        if (!SetEnvironmentVariableW(L"Path", &pwszCopy[5]))
+                            kwErrPrintf("kwSandboxInit: SetEnvironmentVariableW(Path,) failed: %u\n", GetLastError());
+
+                    iDst++;
+                }
+                else
+                {
+                    kHlpFree(pszCopy);
+                    kHlpFree(pwszCopy);
+                    return kwErrPrintfRc(KERR_NO_MEMORY, "Out of memory setting up env vars!\n");
+                }
+            }
+            else
+                kwErrPrintf("kwSandboxInit: Skipping bad env var '%s'\n", pszVar);
+        }
+        pSandbox->papszEnvVars[iDst]  = NULL;
+        pSandbox->environ[iDst]       = NULL;
+        pSandbox->papwszEnvVars[iDst] = NULL;
+        pSandbox->wenviron[iDst]      = NULL;
+    }
+    else
+        return kwErrPrintfRc(KERR_NO_MEMORY, "Error setting up environment variables: kwSandboxGrowEnv failed\n");
+
+    /*
+     * Invalidate the volatile parts of cache (kBuild output directory,
+     * temporary directory, whatever).
+     */
+    kFsCacheInvalidateCustomBoth(g_pFsCache);
+
+#ifdef WITH_HISTORY
+    /*
+     * Record command line in debug history.
+     */
+    kHlpFree(g_apszHistory[g_iHistoryNext]);
+    g_apszHistory[g_iHistoryNext] = kHlpStrDup(pSandbox->pszCmdLine);
+    g_iHistoryNext = (g_iHistoryNext + 1) % K_ELEMENTS(g_apszHistory);
+#endif
+
+    return 0;
+}
+
+
+/**
+ * Does sandbox cleanup between jobs.
+ *
+ * We postpone whatever isn't externally visible (i.e. files) and doesn't
+ * influence the result, so that kmk can get on with things ASAP.
+ *
+ * @param   pSandbox            The sandbox.
+ */
+static void kwSandboxCleanupLate(PKWSANDBOX pSandbox)
+{
+    PROCESS_MEMORY_COUNTERS     MemInfo;
+    PKWVIRTALLOC                pTracker;
+    PKWHEAP                     pHeap;
+    PKWLOCALSTORAGE             pLocalStorage;
+#ifdef WITH_HASH_CACHE
+    PKWCRYPTHASH                pHash;
+#endif
+#ifdef WITH_TEMP_MEMORY_FILES
+    PKWFSTEMPFILE               pTempFile;
+#endif
+    PKWEXITCALLACK              pExitCallback;
+
+    /*
+     * First stuff that may cause code to run.
+     */
+
+    /* Do exit callback first. */
+    pExitCallback = g_Sandbox.pExitCallbackHead;
+    g_Sandbox.pExitCallbackHead = NULL;
+    while (pExitCallback)
+    {
+        PKWEXITCALLACK  pNext = pExitCallback->pNext;
+        KW_LOG(("kwSandboxCleanupLate: calling %p %sexit handler\n",
+                pExitCallback->pfnCallback, pExitCallback->fAtExit ? "at" : "_on"));
+        __try
+        {
+            pExitCallback->pfnCallback();
+        }
+        __except (EXCEPTION_EXECUTE_HANDLER)
+        {
+            KW_LOG(("kwSandboxCleanupLate: %sexit handler %p threw an exception!\n",
+                    pExitCallback->fAtExit ? "at" : "_on", pExitCallback->pfnCallback));
+            kHlpAssertFailed();
+        }
+        kHlpFree(pExitCallback);
+        pExitCallback = pNext;
+    }
+
+    /* Free left behind FlsAlloc leaks. */
+    pLocalStorage = g_Sandbox.pFlsAllocHead;
+    g_Sandbox.pFlsAllocHead = NULL;
+    while (pLocalStorage)
+    {
+        PKWLOCALSTORAGE pNext = pLocalStorage->pNext;
+        KW_LOG(("Freeing leaked FlsAlloc index %#x\n", pLocalStorage->idx));
+        FlsFree(pLocalStorage->idx);
+        kHlpFree(pLocalStorage);
+        pLocalStorage = pNext;
+    }
+
+    /* Free left behind TlsAlloc leaks. */
+    pLocalStorage = g_Sandbox.pTlsAllocHead;
+    g_Sandbox.pTlsAllocHead = NULL;
+    while (pLocalStorage)
+    {
+        PKWLOCALSTORAGE pNext = pLocalStorage->pNext;
+        KW_LOG(("Freeing leaked TlsAlloc index %#x\n", pLocalStorage->idx));
+        TlsFree(pLocalStorage->idx);
+        kHlpFree(pLocalStorage);
+        pLocalStorage = pNext;
+    }
+
+
+    /*
+     * Then free resources associated with the sandbox run.
+     */
+
+    /* Open handles, except fixed handles (stdout and stderr). */
+    EnterCriticalSection(&pSandbox->HandlesLock);
+    if (pSandbox->cActiveHandles > pSandbox->cFixedHandles)
+    {
+        KU32 idxHandle = pSandbox->cHandles;
+        while (idxHandle-- > 0)
+            if (pSandbox->papHandles[idxHandle] == NULL)
+            { /* likely */ }
+            else
+            {
+                PKWHANDLE pHandle = pSandbox->papHandles[idxHandle];
+                if (   pHandle->enmType != KWHANDLETYPE_OUTPUT_BUF
+                    || idxHandle != KW_HANDLE_TO_INDEX(pHandle->hHandle) )
+                {
+                    pSandbox->papHandles[idxHandle] = NULL;
+                    pSandbox->cLeakedHandles++;
+
+                    switch (pHandle->enmType)
+                    {
+                        case KWHANDLETYPE_FSOBJ_READ_CACHE:
+                            KWFS_LOG(("Closing leaked read cache handle: %#x/%p cRefs=%d\n",
+                                      idxHandle, pHandle->hHandle, pHandle->cRefs));
+                            break;
+                        case KWHANDLETYPE_FSOBJ_READ_CACHE_MAPPING:
+                            KWFS_LOG(("Closing leaked read mapping handle: %#x/%p cRefs=%d\n",
+                                      idxHandle, pHandle->hHandle, pHandle->cRefs));
+                            break;
+                        case KWHANDLETYPE_OUTPUT_BUF:
+                            KWFS_LOG(("Closing leaked output buf handle: %#x/%p cRefs=%d\n",
+                                      idxHandle, pHandle->hHandle, pHandle->cRefs));
+                            break;
+#ifdef WITH_TEMP_MEMORY_FILES
+                        case KWHANDLETYPE_TEMP_FILE:
+                            KWFS_LOG(("Closing leaked temp file  handle: %#x/%p cRefs=%d\n",
+                                      idxHandle, pHandle->hHandle, pHandle->cRefs));
+                            pHandle->u.pTempFile->cActiveHandles--;
+                            break;
+                        case KWHANDLETYPE_TEMP_FILE_MAPPING:
+                            KWFS_LOG(("Closing leaked temp mapping handle: %#x/%p cRefs=%d\n",
+                                      idxHandle, pHandle->hHandle, pHandle->cRefs));
+                            pHandle->u.pTempFile->cActiveHandles--;
+                            break;
+#endif
+                        default:
+                            kHlpAssertFailed();
+                    }
+                    if (--pHandle->cRefs == 0)
+                        kHlpFree(pHandle);
+                    if (--pSandbox->cActiveHandles == pSandbox->cFixedHandles)
+                        break;
+                }
+            }
+        kHlpAssert(pSandbox->cActiveHandles == pSandbox->cFixedHandles);
+    }
+    LeaveCriticalSection(&pSandbox->HandlesLock);
+
+    /* Reset memory mappings - This assumes none of the DLLs keeps any of our mappings open! */
+    g_Sandbox.cMemMappings = 0;
+
+#ifdef WITH_TEMP_MEMORY_FILES
+    /* The temporary files aren't externally visible, they're all in memory. */
+    pTempFile = pSandbox->pTempFileHead;
+    pSandbox->pTempFileHead = NULL;
+    while (pTempFile)
+    {
+        PKWFSTEMPFILE pNext = pTempFile->pNext;
+        KU32          iSeg  = pTempFile->cSegs;
+        while (iSeg-- > 0)
+            kHlpPageFree(pTempFile->paSegs[iSeg].pbData, pTempFile->paSegs[iSeg].cbDataAlloc);
+        kHlpFree(pTempFile->paSegs);
+        pTempFile->pNext = NULL;
+        kHlpFree(pTempFile);
+
+        pTempFile = pNext;
+    }
+#endif
+
+    /* Free left behind HeapCreate leaks. */
+    pHeap = g_Sandbox.pHeapHead;
+    g_Sandbox.pHeapHead = NULL;
+    while (pHeap != NULL)
+    {
+        PKWHEAP pNext = pHeap->pNext;
+        KW_LOG(("Freeing HeapCreate leak %p\n", pHeap->hHeap));
+        HeapDestroy(pHeap->hHeap);
+        pHeap = pNext;
+    }
+
+    /* Free left behind VirtualAlloc leaks. */
+    EnterCriticalSection(&g_Sandbox.VirtualAllocLock);
+    pTracker = g_Sandbox.pVirtualAllocHead;
+    g_Sandbox.pVirtualAllocHead = NULL;
+    LeaveCriticalSection(&g_Sandbox.VirtualAllocLock);
+    while (pTracker)
+    {
+        PKWVIRTALLOC pNext = pTracker->pNext;
+        KW_LOG(("Freeing VirtualFree leak %p LB %#x\n", pTracker->pvAlloc, pTracker->cbAlloc));
+
+#ifdef WITH_FIXED_VIRTUAL_ALLOCS
+        if (pTracker->idxPreAllocated != KU32_MAX)
+            kwSandboxResetFixedAllocation(pTracker->idxPreAllocated);
+        else
+#endif
+            VirtualFree(pTracker->pvAlloc, 0, MEM_RELEASE);
+        kHlpFree(pTracker);
+        pTracker = pNext;
+    }
+
+    /* Free the environment. */
+    if (pSandbox->papszEnvVars)
+    {
+        KU32 i;
+        for (i = 0; pSandbox->papszEnvVars[i]; i++)
+            kHlpFree(pSandbox->papszEnvVars[i]);
+        pSandbox->environ[0]      = NULL;
+        pSandbox->papszEnvVars[0] = NULL;
+
+        for (i = 0; pSandbox->papwszEnvVars[i]; i++)
+            kHlpFree(pSandbox->papwszEnvVars[i]);
+        pSandbox->wenviron[0]      = NULL;
+        pSandbox->papwszEnvVars[0] = NULL;
+    }
+
+#ifdef WITH_HASH_CACHE
+    /*
+     * Hash handles.
+     */
+    pHash = pSandbox->pHashHead;
+    pSandbox->pHashHead = NULL;
+    while (pHash)
+    {
+        PKWCRYPTHASH pNext = pHash->pNext;
+        KWCRYPT_LOG(("Freeing leaked hash instance %#p\n", pHash));
+        if (pHash->hFallback != KUPTR_MAX)
+            CryptDestroyHash(pHash->hFallback);
+        kHlpFree(pHash);
+        pHash = pNext;
+    }
+#endif
+
+    /*
+     * Check the memory usage.  If it's getting high, trigger a respawn
+     * after the next job.
+     */
+    MemInfo.WorkingSetSize = 0;
+    if (GetProcessMemoryInfo(GetCurrentProcess(), &MemInfo, sizeof(MemInfo)))
+    {
+        /* The first time thru, we figure out approximately when to restart
+           based on installed RAM and CPU threads. */
+        static KU64 s_cbMaxWorkingSet = 0;
+        if (s_cbMaxWorkingSet != 0)
+        { /* likely */ }
+        else
+        {
+            SYSTEM_INFO SysInfo;
+            MEMORYSTATUSEX GlobalMemInfo;
+            const char    *pszValue;
+
+            /* Calculate a reasonable estimate. */
+            kHlpMemSet(&SysInfo, 0, sizeof(SysInfo));
+            GetNativeSystemInfo(&SysInfo);
+
+            kHlpMemSet(&GlobalMemInfo, 0, sizeof(GlobalMemInfo));
+            GlobalMemInfo.dwLength = sizeof(GlobalMemInfo);
+            if (!GlobalMemoryStatusEx(&GlobalMemInfo))
+#if K_ARCH_BITS >= 64
+                GlobalMemInfo.ullTotalPhys = KU64_C(0x000200000000); /* 8GB */
+#else
+                GlobalMemInfo.ullTotalPhys = KU64_C(0x000080000000); /* 2GB */
+#endif
+            s_cbMaxWorkingSet = GlobalMemInfo.ullTotalPhys / (K_MAX(SysInfo.dwNumberOfProcessors, 1) * 4);
+            KW_LOG(("Raw estimate of s_cbMaxWorkingSet=%" KU64_PRI "\n", s_cbMaxWorkingSet));
+
+            /* User limit. */
+            pszValue = getenv("KWORKER_MEMORY_LIMIT");
+            if (pszValue != NULL)
+            {
+                char         *pszNext;
+                unsigned long ulValue = strtol(pszValue, &pszNext, 0);
+                if (*pszNext == '\0' || *pszNext == 'M')
+                    s_cbMaxWorkingSet = ulValue * (KU64)1048576;
+                else if (*pszNext == 'K')
+                    s_cbMaxWorkingSet = ulValue * (KU64)1024;
+                else if (*pszNext == 'G')
+                    s_cbMaxWorkingSet = ulValue * (KU64)1073741824;
+                else
+                    kwErrPrintf("Unable to grok KWORKER_MEMORY_LIMIT: %s\n", pszValue);
+                KW_LOG(("User s_cbMaxWorkingSet=%" KU64_PRI "\n", s_cbMaxWorkingSet));
+            }
+
+            /* Clamp it a little. */
+            if (s_cbMaxWorkingSet < 168*1024*1024)
+                s_cbMaxWorkingSet = 168*1024*1024;
+#if K_ARCH_BITS < 64
+            else
+                s_cbMaxWorkingSet = K_MIN(s_cbMaxWorkingSet,
+                                          SysInfo.dwProcessorType != PROCESSOR_ARCHITECTURE_AMD64
+                                          ?  512*1024*1024 /* Only got 2 or 3 GB VA */
+                                          : 1536*1024*1024 /* got 4GB VA */);
+#endif
+            if (s_cbMaxWorkingSet > GlobalMemInfo.ullTotalPhys)
+                s_cbMaxWorkingSet = GlobalMemInfo.ullTotalPhys;
+            KW_LOG(("Final s_cbMaxWorkingSet=%" KU64_PRI "\n", s_cbMaxWorkingSet));
+        }
+
+        /* Finally the check. */
+        if (MemInfo.WorkingSetSize >= s_cbMaxWorkingSet)
+        {
+            KW_LOG(("WorkingSetSize = %#x - > restart next time.\n", MemInfo.WorkingSetSize));
+            g_fRestart = K_TRUE;
+        }
+    }
+
+    /*
+     * The CRT has a max of 8192 handles, so we better restart after a while if
+     * someone is leaking handles or we risk running out of descriptors.
+     *
+     * Note! We only detect leaks for handles we intercept.  In the case of CL.EXE
+     *       doing _dup2(1, 2) (stderr ==> stdout), there isn't actually a leak.
+     */
+    if (pSandbox->cLeakedHandles > 6000)
+    {
+        KW_LOG(("LeakedHandles = %#x - > restart next time.\n", pSandbox->cLeakedHandles));
+        g_fRestart = K_TRUE;
+    }
+}
+
+
+/**
+ * Does essential cleanups and restoring, anything externally visible.
+ *
+ * All cleanups that aren't externally visible are postponed till after we've
+ * informed kmk of the result, so it can be done in the dead time between jobs.
+ *
+ * @param   pSandbox            The sandbox.
+ */
+static void kwSandboxCleanup(PKWSANDBOX pSandbox)
+{
+    /*
+     * Restore the parent command line string.
+     */
+    PPEB pPeb = kwSandboxGetProcessEnvironmentBlock();
+    PMY_RTL_USER_PROCESS_PARAMETERS pProcParams = (PMY_RTL_USER_PROCESS_PARAMETERS)pPeb->ProcessParameters;
+    pProcParams->CommandLine    = pSandbox->SavedCommandLine;
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+    pProcParams->StandardOutput = pSandbox->StdOut.hOutput;
+    pProcParams->StandardError  = pSandbox->StdErr.hOutput; /* CL.EXE messes with this one. */
+#endif
+}
+
+
+static int kwSandboxExec(PKWSANDBOX pSandbox, PKWTOOL pTool, KU32 cArgs, const char **papszArgs, KBOOL fWatcomBrainDamange,
+                         KU32 cEnvVars, const char **papszEnvVars, KBOOL fNoPchCaching)
+{
+    int rcExit = 42;
+    int rc;
+
+    /*
+     * Initialize the sandbox environment.
+     */
+    rc = kwSandboxInit(&g_Sandbox, pTool, cArgs, papszArgs, fWatcomBrainDamange, cEnvVars, papszEnvVars, fNoPchCaching);
+    if (rc == 0)
+    {
+        if (g_cVerbose > 2)
+            fprintf(stderr, "kWorker: info: Executing (sandboxed): %s\n", g_Sandbox.pszCmdLine);
+
+        /*
+         * Do module initialization.
+         */
+#if 0
+        //kwSandboxResetModuleVisited();
+        //kwSandboxResetModuleState(pTool->u.Sandboxed.pExe);
+#else
+        kwSandboxResetModuleState();
+#endif
+        rc = kwLdrModuleInitTree(pTool->u.Sandboxed.pExe);
+        if (rc == 0)
+        {
+            /*
+             * Call the main function.
+             */
+#if K_ARCH == K_ARCH_AMD64
+            int (*pfnWin64Entrypoint)(void *pvPeb, void *, void *, void *);
+#elif K_ARCH == K_ARCH_X86_32
+            int (__cdecl *pfnWin32Entrypoint)(void *pvPeb);
+#else
+# error "Port me!"
+#endif
+
+            /* Save the NT TIB first (should do that here, not in some other function). */
+            PNT_TIB pTib = (PNT_TIB)NtCurrentTeb();
+            pSandbox->TibMainThread = *pTib;
+
+            /* Make the call in a guarded fashion. */
+#if K_ARCH == K_ARCH_AMD64
+            /* AMD64 */
+            *(KUPTR *)&pfnWin64Entrypoint = pTool->u.Sandboxed.uMainAddr;
+            __try
+            {
+                pSandbox->pOutXcptListHead = pTib->ExceptionList;
+                if (setjmp(pSandbox->JmpBuf) == 0)
+                {
+                    *(KU64*)(pSandbox->JmpBuf) = 0; /** @todo find other way to prevent longjmp from doing unwind! */
+                    pSandbox->fRunning = K_TRUE;
+                    rcExit = pfnWin64Entrypoint(kwSandboxGetProcessEnvironmentBlock(), NULL, NULL, NULL);
+                    pSandbox->fRunning = K_FALSE;
+                }
+                else
+                    rcExit = pSandbox->rcExitCode;
+            }
+#elif K_ARCH == K_ARCH_X86_32
+            /* x86 (see _tmainCRTStartup) */
+            *(KUPTR *)&pfnWin32Entrypoint = pTool->u.Sandboxed.uMainAddr;
+            __try
+            {
+                pSandbox->pOutXcptListHead = pTib->ExceptionList;
+                if (setjmp(pSandbox->JmpBuf) == 0)
+                {
+                    //*(KU64*)(pSandbox->JmpBuf) = 0; /** @todo find other way to prevent longjmp from doing unwind! */
+                    pSandbox->fRunning = K_TRUE;
+                    rcExit = pfnWin32Entrypoint(kwSandboxGetProcessEnvironmentBlock());
+                    pSandbox->fRunning = K_FALSE;
+                }
+                else
+                    rcExit = pSandbox->rcExitCode;
+            }
+#endif
+            __except (EXCEPTION_EXECUTE_HANDLER)
+            {
+                kwErrPrintf("Caught exception %#x!\n", GetExceptionCode());
+#ifdef WITH_HISTORY
+                {
+                    KU32 cPrinted = 0;
+                    while (cPrinted++ < 5)
+                    {
+                        KU32 idx = (g_iHistoryNext + K_ELEMENTS(g_apszHistory) - cPrinted) % K_ELEMENTS(g_apszHistory);
+                        if (g_apszHistory[idx])
+                            kwErrPrintf("cmd[%d]: %s\n", 1 - cPrinted, g_apszHistory[idx]);
+                    }
+                }
+#endif
+                rcExit = 512;
+            }
+            pSandbox->fRunning = K_FALSE;
+
+            /* Now, restore the NT TIB. */
+            *pTib = pSandbox->TibMainThread;
+        }
+        else
+            rcExit = 42 + 4;
+
+        /*
+         * Flush and clean up the essential bits only, postpone whatever we
+         * can till after we've replied to kmk.
+         */
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+        kwSandboxConsoleFlushAll(&g_Sandbox);
+#endif
+        kwSandboxCleanup(&g_Sandbox);
+        /** @todo Flush sandboxed native CRTs too. */
+    }
+    else
+        rcExit = 42 + 3;
+
+    return rcExit;
+}
+
+
+/**
+ * Does the post command part of a job (optional).
+ *
+ * @returns The exit code of the job.
+ * @param   cPostCmdArgs        Number of post command arguments (includes cmd).
+ * @param   papszPostCmdArgs    The post command and its argument.
+ */
+static int kSubmitHandleJobPostCmd(KU32 cPostCmdArgs, const char **papszPostCmdArgs)
+{
+    const char *pszCmd = papszPostCmdArgs[0];
+
+    /* Allow the kmk builtin prefix. */
+    static const char s_szKmkBuiltinPrefix[] = "kmk_builtin_";
+    if (kHlpStrNComp(pszCmd, s_szKmkBuiltinPrefix, sizeof(s_szKmkBuiltinPrefix) - 1) == 0)
+        pszCmd += sizeof(s_szKmkBuiltinPrefix) - 1;
+
+    /* Command switch. */
+    if (kHlpStrComp(pszCmd, "kDepObj") == 0)
+    {
+        KMKBUILTINCTX Ctx = { papszPostCmdArgs[0], NULL };
+        return kmk_builtin_kDepObj(cPostCmdArgs, (char **)papszPostCmdArgs, NULL, &Ctx);
+    }
+
+    return kwErrPrintfRc(42 + 5, "Unknown post command: '%s'\n", pszCmd);
+}
+
+
+/**
+ * Helper for kSubmitHandleSpecialEnvVar that gets the current process group.
+ */
+static unsigned kwGetCurrentProcessorGroup(void)
+{
+    typedef BOOL (WINAPI *PFNGETTHREADGROUPAFFINITY)(HANDLE, GROUP_AFFINITY *);
+    HMODULE                   hmodKernel32 = GetModuleHandleW(L"KERNEL32.DLL");
+    PFNGETTHREADGROUPAFFINITY pfnGetter    = (PFNGETTHREADGROUPAFFINITY)GetProcAddress(hmodKernel32, "GetThreadGroupAffinity");
+    if (pfnGetter)
+    {
+        GROUP_AFFINITY GroupAffinity;
+        memset(&GroupAffinity, 0, sizeof(GroupAffinity));
+        if (pfnGetter(GetCurrentThread(), &GroupAffinity))
+            return GroupAffinity.Group;
+    }
+    return 0;
+}
+
+
+/**
+ * Helper for kSubmitHandleSpecialEnvVar that gets the current process group.
+ */
+static KSIZE kwGetCurrentAuthenticationIdAsString(char *pszValue)
+{
+    KSIZE  cchRet = 0;
+    HANDLE hToken;
+    if (OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
+    {
+        DWORD cbRet;
+        TOKEN_STATISTICS TokenStats;
+        memset(&TokenStats, 0, sizeof(TokenStats));
+        if (GetTokenInformation(hToken, TokenStatistics, &TokenStats, sizeof(TokenStats), &cbRet))
+            cchRet = sprintf(pszValue, "%" KX64_PRI,
+                             ((KU64)TokenStats.AuthenticationId.HighPart << 32) | TokenStats.AuthenticationId.LowPart);
+        else
+            kwErrPrintf("GetTokenInformation/TokenStatistics failed: %u\n", GetLastError());
+        CloseHandle(hToken);
+    }
+    else
+        kwErrPrintf("OpenProcessToken failed: %u\n", GetLastError());
+    return cchRet;
+}
+
+
+/** 
+ * Look for and expand the special environment variable. 
+ *  
+ * We the special variable contains elements like "@@VAR_NAME@@" that kmk 
+ * couldn't accuratly determine.  Currently the following variables are 
+ * implemented: 
+ *     - "@@PROCESSOR_GROUP@@"   - The processor group number.
+ *     - "@@AUTHENTICATION_ID@@" - The authentication ID from the process token.
+ *     - "@@PID@@"               - The kWorker process ID.
+ *     - "@@@@"                  - Escaped "@@".
+ *     - "@@DEBUG_COUNTER@@"     - An ever increasing counter (starts at zero).
+ */  
+static int kSubmitHandleSpecialEnvVar(KU32 cEnvVars, const char **papszEnvVars, const char *pszSpecialEnv, char **ppszToFree)
+{
+    KSIZE const cchSpecialEnv = kHlpStrLen(pszSpecialEnv);
+    KU32 i = cEnvVars;
+    while (i-- > 0)
+        if (   kHlpStrNComp(papszEnvVars[i], pszSpecialEnv, cchSpecialEnv) == 0
+            && papszEnvVars[i][cchSpecialEnv] == '=')
+        {
+            /* We will expand stuff like @@NAME@@ */
+            const char *pszValue = papszEnvVars[i];
+            KSIZE       offDst   = 0;
+            char        szTmp[1024];
+            for (;;)
+            {
+                const char *pszAt = kHlpStrChr(pszValue, '@');
+                while (pszAt && pszAt[1] != '@')
+                    pszAt = kHlpStrChr(pszAt + 1, '@');
+                if (pszAt)
+                {
+                    KSIZE cchSrc = pszAt - pszValue;
+                    if (offDst + cchSrc < sizeof(szTmp))
+                    {
+                        char szSrc[64];
+
+                        kHlpMemCopy(&szTmp[offDst], pszValue, cchSrc);
+                        offDst += cchSrc;
+                        pszValue = pszAt + 2;
+
+                        if (kHlpStrNComp(pszValue, "PROCESS_GROUP@@", 15) == 0)
+                        {
+                            pszValue += 15;
+                            if (g_iProcessGroup == -1)
+                                g_iProcessGroup = kwGetCurrentProcessorGroup();
+                            cchSrc = sprintf(szSrc, "%u", g_iProcessGroup);
+                        }
+                        else if (kHlpStrNComp(pszValue, "AUTHENTICATION_ID@@", 19) == 0)
+                        {
+                            pszValue += 19;
+                            cchSrc = kwGetCurrentAuthenticationIdAsString(szSrc);
+                        }
+                        else if (kHlpStrNComp(pszValue, "PID@@", 5) == 0)
+                        {
+                            pszValue += 5;
+                            cchSrc = sprintf(szSrc, "%d", getpid());
+                        }
+                        else if (kHlpStrNComp(pszValue, "@@", 2) == 0)
+                        {
+                            pszValue += 2;
+                            szSrc[0] = '@';
+                            szSrc[1] = '@';
+                            szSrc[2] = '\0';
+                            cchSrc = 2;
+                        }
+                        else if (kHlpStrNComp(pszValue, "DEBUG_COUNTER@@", 15) == 0)
+                        {
+                            static unsigned int s_iCounter = 0;
+                            pszValue += 15;
+                            cchSrc = sprintf(szSrc, "%u", s_iCounter++);
+                        }
+                        else
+                            return kwErrPrintfRc(42 + 6, "Special environment variable contains unknown reference: '%s'!\n",
+                                                 pszValue - 2);
+                        if (offDst + cchSrc < sizeof(szTmp))
+                        {
+                            kHlpMemCopy(&szTmp[offDst], szSrc, cchSrc);
+                            offDst += cchSrc;
+                            continue;
+                        }
+                    }
+                }
+                else
+                {
+                    KSIZE cchSrc = kHlpStrLen(pszValue);
+                    if (offDst + cchSrc < sizeof(szTmp))
+                    {
+                        kHlpMemCopy(&szTmp[offDst], pszValue, cchSrc);
+                        offDst += cchSrc;
+                        break;
+                    }
+                }
+                return kwErrPrintfRc(42 + 6, "Special environment variable value too long!\n");
+            }
+            szTmp[offDst] = '\0';
+
+            /* Return a copy of it: */
+            papszEnvVars[i] = *ppszToFree = kHlpDup(szTmp, offDst + 1);
+            if (papszEnvVars[i])
+            {
+                SetEnvironmentVariableA(pszSpecialEnv, kHlpStrChr(papszEnvVars[i], '=') + 1); /* hack */
+                return 0;
+            }
+            return kwErrPrintfRc(42 + 6, "Special environment variable: out of memory\n");
+        }
+
+    return kwErrPrintfRc(42 + 6, "Special environment variable not found: '%s'\n", pszSpecialEnv);
+}
+
+
+/**
+ * Part 2 of the "JOB" command handler.
+ *
+ * @returns The exit code of the job.
+ * @param   pszExecutable       The executable to execute.
+ * @param   pszCwd              The current working directory of the job.
+ * @param   cArgs               The number of arguments.
+ * @param   papszArgs           The argument vector.
+ * @param   fWatcomBrainDamange Whether to apply watcom rules while quoting.
+ * @param   cEnvVars            The number of environment variables.
+ * @param   papszEnvVars        The environment vector.
+ * @param   pszSpecialEnv       Name of special environment variable that
+ *                              requires selective expansion here.
+ * @param   fNoPchCaching       Whether to disable precompiled header file
+ *                              caching.  Avoid trouble when creating them.
+ * @param   cPostCmdArgs        Number of post command arguments (includes cmd).
+ * @param   papszPostCmdArgs    The post command and its argument.
+ */
+static int kSubmitHandleJobUnpacked(const char *pszExecutable, const char *pszCwd,
+                                    KU32 cArgs, const char **papszArgs, KBOOL fWatcomBrainDamange,
+                                    KU32 cEnvVars, const char **papszEnvVars, const char *pszSpecialEnv,
+                                    KBOOL fNoPchCaching, KU32 cPostCmdArgs, const char **papszPostCmdArgs)
+{
+    int rcExit;
+    PKWTOOL pTool;
+    char *pszSpecialEnvFree = NULL;
+
+    KW_LOG(("\n\nkSubmitHandleJobUnpacked: '%s' in '%s' cArgs=%u cEnvVars=%u cPostCmdArgs=%u\n",
+            pszExecutable, pszCwd, cArgs, cEnvVars, cPostCmdArgs));
+#ifdef KW_LOG_ENABLED
+    {
+        KU32 i;
+        for (i = 0; i < cArgs; i++)
+            KW_LOG(("  papszArgs[%u]=%s\n", i, papszArgs[i]));
+        for (i = 0; i < cPostCmdArgs; i++)
+            KW_LOG(("  papszPostCmdArgs[%u]=%s\n", i, papszPostCmdArgs[i]));
+    }
+#endif
+    g_cJobs++;
+
+    /*
+     * Expand pszSpecialEnv if present.
+     */
+    if (pszSpecialEnv && *pszSpecialEnv)
+    {
+        rcExit = kSubmitHandleSpecialEnvVar(cEnvVars, papszEnvVars, pszSpecialEnv, &pszSpecialEnvFree);
+        if (!rcExit)
+        { /* likely */ }
+        else
+            return rcExit;
+    }
+
+    /*
+     * Lookup the tool.
+     */
+    g_Sandbox.pTool = NULL; /* Avoid confusion between the SetDllDirectoryW hacks. */
+    pTool = kwToolLookup(pszExecutable, cEnvVars, papszEnvVars);
+    if (pTool)
+    {
+        /*
+         * Change the directory if we're going to execute the job inside
+         * this process.  Then invoke the tool type specific handler.
+         */
+        switch (pTool->enmType)
+        {
+            case KWTOOLTYPE_SANDBOXED:
+            case KWTOOLTYPE_WATCOM:
+            {
+                /* Change dir. */
+                KFSLOOKUPERROR  enmError;
+                PKFSOBJ         pNewCurDir = kFsCacheLookupA(g_pFsCache, pszCwd, &enmError);
+                if (   pNewCurDir           == g_pCurDirObj
+                    && pNewCurDir->bObjType == KFSOBJ_TYPE_DIR)
+                    kFsCacheObjRelease(g_pFsCache, pNewCurDir);
+                else if (SetCurrentDirectoryA(pszCwd))
+                {
+                    kFsCacheObjRelease(g_pFsCache, g_pCurDirObj);
+                    g_pCurDirObj = pNewCurDir;
+                }
+                else
+                {
+                    kwErrPrintf("SetCurrentDirectory failed with %u on '%s'\n", GetLastError(), pszCwd);
+                    kFsCacheObjRelease(g_pFsCache, pNewCurDir);
+                    rcExit = 42 + 1;
+                    break;
+                }
+
+                /* Call specific handler. */
+                if (pTool->enmType == KWTOOLTYPE_SANDBOXED)
+                {
+                    KW_LOG(("Sandboxing tool %s\n", pTool->pszPath));
+                    rcExit = kwSandboxExec(&g_Sandbox, pTool, cArgs, papszArgs, fWatcomBrainDamange,
+                                           cEnvVars, papszEnvVars, fNoPchCaching);
+                }
+                else
+                {
+                    kwErrPrintf("TODO: Watcom style tool %s\n", pTool->pszPath);
+                    rcExit = 42 + 2;
+                }
+                break;
+            }
+
+            case KWTOOLTYPE_EXEC:
+                kwErrPrintf("TODO: Direct exec tool %s\n", pTool->pszPath);
+                rcExit = 42 + 2;
+                break;
+
+            default:
+                kHlpAssertFailed();
+                kwErrPrintf("Internal tool type corruption!!\n");
+                rcExit = 42 + 2;
+                g_fRestart = K_TRUE;
+                break;
+        }
+
+        /*
+         * Do the post command, if present.
+         */
+        if (cPostCmdArgs && rcExit == 0)
+            rcExit = kSubmitHandleJobPostCmd(cPostCmdArgs, papszPostCmdArgs);
+    }
+    else
+        rcExit = 42 + 1;
+    if (pszSpecialEnvFree)
+    {
+        SetEnvironmentVariableA(pszSpecialEnv, NULL); /* hack */
+        kHlpFree(pszSpecialEnvFree);
+    }
+    return rcExit;
+}
+
+
+/**
+ * Handles a "JOB" command.
+ *
+ * @returns The exit code of the job.
+ * @param   pszMsg              Points to the "JOB" command part of the message.
+ * @param   cbMsg               Number of message bytes at @a pszMsg.  There are
+ *                              4 more zero bytes after the message body to
+ *                              simplify parsing.
+ */
+static int kSubmitHandleJob(const char *pszMsg, KSIZE cbMsg)
+{
+    int rcExit = 42;
+
+    /*
+     * Unpack the message.
+     */
+    const char     *pszExecutable;
+    KSIZE           cbTmp;
+
+    pszMsg += sizeof("JOB");
+    cbMsg  -= sizeof("JOB");
+
+    /* Executable name. */
+    pszExecutable = pszMsg;
+    cbTmp = kHlpStrLen(pszMsg) + 1;
+    pszMsg += cbTmp;
+    if (   cbTmp < cbMsg
+        && cbTmp > 2)
+    {
+        const char *pszCwd;
+        cbMsg -= cbTmp;
+
+        /* Current working directory. */
+        pszCwd = pszMsg;
+        cbTmp = kHlpStrLen(pszMsg) + 1;
+        pszMsg += cbTmp;
+        if (   cbTmp + sizeof(KU32) < cbMsg
+            && cbTmp >= 2)
+        {
+            KU32    cArgs;
+            cbMsg  -= cbTmp;
+
+            /* Argument count. */
+            kHlpMemCopy(&cArgs, pszMsg, sizeof(cArgs));
+            pszMsg += sizeof(cArgs);
+            cbMsg  -= sizeof(cArgs);
+
+            if (cArgs > 0 && cArgs < 4096)
+            {
+                /* The argument vector. */
+                char const **papszArgs = kHlpAlloc((cArgs + 1) * sizeof(papszArgs[0]));
+                if (papszArgs)
+                {
+                    KU32 i;
+                    for (i = 0; i < cArgs; i++)
+                    {
+                        papszArgs[i] = pszMsg + 1; /* First byte is expansion flags for MSC & EMX. */
+                        cbTmp = 1 + kHlpStrLen(pszMsg + 1) + 1;
+                        pszMsg += cbTmp;
+                        if (cbTmp < cbMsg)
+                            cbMsg -= cbTmp;
+                        else
+                        {
+                            cbMsg = 0;
+                            break;
+                        }
+
+                    }
+                    papszArgs[cArgs] = 0;
+
+                    /* Environment variable count. */
+                    if (cbMsg > sizeof(KU32))
+                    {
+                        KU32    cEnvVars;
+                        kHlpMemCopy(&cEnvVars, pszMsg, sizeof(cEnvVars));
+                        pszMsg += sizeof(cEnvVars);
+                        cbMsg  -= sizeof(cEnvVars);
+
+                        if (cEnvVars >= 0 && cEnvVars < 4096)
+                        {
+                            /* The argument vector. */
+                            char const **papszEnvVars = kHlpAlloc((cEnvVars + 1) * sizeof(papszEnvVars[0]));
+                            if (papszEnvVars)
+                            {
+                                for (i = 0; i < cEnvVars; i++)
+                                {
+                                    papszEnvVars[i] = pszMsg;
+                                    cbTmp = kHlpStrLen(pszMsg) + 1;
+                                    pszMsg += cbTmp;
+                                    if (cbTmp < cbMsg)
+                                        cbMsg -= cbTmp;
+                                    else
+                                    {
+                                        cbMsg = 0;
+                                        break;
+                                    }
+                                }
+                                papszEnvVars[cEnvVars] = 0;
+
+                                /* Flags (currently just watcom argument brain damage and no precompiled header caching). */
+                                if (cbMsg >= sizeof(KU8) * 2)
+                                {
+                                    KBOOL fWatcomBrainDamange = *pszMsg++;
+                                    KBOOL fNoPchCaching = *pszMsg++;
+                                    cbMsg -= 2;
+
+                                    /* Name of special enviornment variable requiring selective expansion. */
+                                    if (cbMsg >= 1)
+                                    {
+                                        const char *pszSpecialEnv = pszMsg;
+                                        cbTmp = kHlpStrLen(pszMsg);
+                                        pszMsg += cbTmp + 1;
+                                        cbMsg  -= K_MIN(cbMsg, cbTmp + 1);
+
+                                        /* Post command argument count (can be zero). */
+                                        if (cbMsg >= sizeof(KU32))
+                                        {
+                                            KU32 cPostCmdArgs;
+                                            kHlpMemCopy(&cPostCmdArgs, pszMsg, sizeof(cPostCmdArgs));
+                                            pszMsg += sizeof(cPostCmdArgs);
+                                            cbMsg  -= sizeof(cPostCmdArgs);
+
+                                            if (cPostCmdArgs >= 0 && cPostCmdArgs < 32)
+                                            {
+                                                char const *apszPostCmdArgs[32+1];
+                                                for (i = 0; i < cPostCmdArgs; i++)
+                                                {
+                                                    apszPostCmdArgs[i] = pszMsg;
+                                                    cbTmp = kHlpStrLen(pszMsg) + 1;
+                                                    pszMsg += cbTmp;
+                                                    if (   cbTmp < cbMsg
+                                                        || (cbTmp == cbMsg && i + 1 == cPostCmdArgs))
+                                                        cbMsg -= cbTmp;
+                                                    else
+                                                    {
+                                                        cbMsg = KSIZE_MAX;
+                                                        break;
+                                                    }
+                                                }
+                                                if (cbMsg == 0)
+                                                {
+                                                    apszPostCmdArgs[cPostCmdArgs] = NULL;
+
+                                                    /*
+                                                     * The next step.
+                                                     */
+                                                    rcExit = kSubmitHandleJobUnpacked(pszExecutable, pszCwd,
+                                                                                      cArgs, papszArgs, fWatcomBrainDamange,
+                                                                                      cEnvVars, papszEnvVars, pszSpecialEnv,
+                                                                                      fNoPchCaching,
+                                                                                      cPostCmdArgs, apszPostCmdArgs);
+                                                }
+                                                else if (cbMsg == KSIZE_MAX)
+                                                    kwErrPrintf("Detected bogus message unpacking post command and its arguments!\n");
+                                                else
+                                                    kwErrPrintf("Message has %u bytes unknown trailing bytes\n", cbMsg);
+                                            }
+                                            else
+                                                kwErrPrintf("Bogus post command argument count: %u %#x\n", cPostCmdArgs, cPostCmdArgs);
+                                        }
+                                        else
+                                            kwErrPrintf("Detected bogus message looking for the post command argument count!\n");
+                                    }
+                                    else
+                                        kwErrPrintf("Detected bogus message unpacking special environment variable!\n");
+                                }
+                                else
+                                    kwErrPrintf("Detected bogus message unpacking flags!\n");
+                                kHlpFree((void *)papszEnvVars);
+                            }
+                            else
+                                kwErrPrintf("Error allocating papszEnvVars for %u variables\n", cEnvVars);
+                        }
+                        else
+                            kwErrPrintf("Bogus environment variable count: %u (%#x)\n", cEnvVars, cEnvVars);
+                    }
+                    else
+                        kwErrPrintf("Detected bogus message unpacking arguments and environment variable count!\n");
+                    kHlpFree((void *)papszArgs);
+                }
+                else
+                    kwErrPrintf("Error allocating argv for %u arguments\n", cArgs);
+            }
+            else
+                kwErrPrintf("Bogus argument count: %u (%#x)\n", cArgs, cArgs);
+        }
+        else
+            kwErrPrintf("Detected bogus message unpacking CWD path and argument count!\n");
+    }
+    else
+        kwErrPrintf("Detected bogus message unpacking executable path!\n");
+    return rcExit;
+}
+
+
+/**
+ * Wrapper around WriteFile / write that writes the whole @a cbToWrite.
+ *
+ * @retval  0 on success.
+ * @retval  -1 on error (fully bitched).
+ *
+ * @param   hPipe               The pipe handle.
+ * @param   pvBuf               The buffer to write out out.
+ * @param   cbToWrite           The number of bytes to write.
+ */
+static int kSubmitWriteIt(HANDLE hPipe, const void *pvBuf, KU32 cbToWrite)
+{
+    KU8 const  *pbBuf  = (KU8 const *)pvBuf;
+    KU32        cbLeft = cbToWrite;
+    while (g_rcCtrlC == 0)
+    {
+        DWORD cbActuallyWritten = 0;
+        if (WriteFile(hPipe, pbBuf, cbLeft, &cbActuallyWritten, NULL /*pOverlapped*/))
+        {
+            cbLeft -= cbActuallyWritten;
+            if (!cbLeft)
+                return 0;
+            pbBuf  += cbActuallyWritten;
+        }
+        else
+        {
+            DWORD dwErr = GetLastError();
+            if (cbLeft == cbToWrite)
+                kwErrPrintf("WriteFile failed: %u\n", dwErr);
+            else
+                kwErrPrintf("WriteFile failed %u byte(s) in: %u\n", cbToWrite - cbLeft, dwErr);
+            return -1;
+        }
+    }
+    return -1;
+}
+
+
+/**
+ * Wrapper around ReadFile / read that reads the whole @a cbToRead.
+ *
+ * @retval  0 on success.
+ * @retval  1 on shut down (fShutdownOkay must be K_TRUE).
+ * @retval  -1 on error (fully bitched).
+ * @param   hPipe               The pipe handle.
+ * @param   pvBuf               The buffer to read into.
+ * @param   cbToRead            The number of bytes to read.
+ * @param   fShutdownOkay       Whether connection shutdown while reading the
+ *                              first byte is okay or not.
+ */
+static int kSubmitReadIt(HANDLE hPipe, void *pvBuf, KU32 cbToRead, KBOOL fMayShutdown)
+{
+    KU8 *pbBuf  = (KU8 *)pvBuf;
+    KU32 cbLeft = cbToRead;
+    while (g_rcCtrlC == 0)
+    {
+        DWORD cbActuallyRead = 0;
+        if (ReadFile(hPipe, pbBuf, cbLeft, &cbActuallyRead, NULL /*pOverlapped*/))
+        {
+            cbLeft -= cbActuallyRead;
+            if (!cbLeft)
+                return 0;
+            pbBuf  += cbActuallyRead;
+        }
+        else
+        {
+            DWORD dwErr = GetLastError();
+            if (cbLeft == cbToRead)
+            {
+                if (   fMayShutdown
+                    && dwErr == ERROR_BROKEN_PIPE)
+                    return 1;
+                kwErrPrintf("ReadFile failed: %u\n", dwErr);
+            }
+            else
+                kwErrPrintf("ReadFile failed %u byte(s) in: %u\n", cbToRead - cbLeft, dwErr);
+            return -1;
+        }
+    }
+    return -1;
+}
+
+
+/**
+ * Decimal formatting of a 64-bit unsigned value into a large enough buffer.
+ *
+ * @returns pszBuf
+ * @param   pszBuf              The buffer (sufficiently large).
+ * @param   uValue              The value.
+ */
+static const char *kwFmtU64(char *pszBuf, KU64 uValue)
+{
+    char  szTmp[64];
+    char *psz = &szTmp[63];
+    int   cch = 4;
+
+    *psz-- = '\0';
+    do
+    {
+        if (--cch == 0)
+        {
+            *psz-- = ' ';
+            cch = 3;
+        }
+        *psz-- = (uValue % 10) + '0';
+        uValue /= 10;
+    } while (uValue != 0);
+
+    return strcpy(pszBuf, psz + 1);
+}
+
+
+/**
+ * Prints statistics.
+ */
+static void kwPrintStats(void)
+{
+    PROCESS_MEMORY_COUNTERS_EX MemInfo;
+    MEMORYSTATUSEX MemStatus;
+    IO_COUNTERS IoCounters;
+    DWORD cHandles;
+    KSIZE cMisses;
+    char  szBuf[16*1024];
+    int   off = 0;
+    char  szPrf[24];
+    char  sz1[64];
+    char  sz2[64];
+    char  sz3[64];
+    char  sz4[64];
+
+    sprintf(szPrf, "%5d/%u:", getpid(), K_ARCH_BITS);
+
+    szBuf[off++] = '\n';
+
+    off += sprintf(&szBuf[off], "%s %14s jobs, %s tools, %s modules, %s non-native ones\n", szPrf,
+                   kwFmtU64(sz1, g_cJobs), kwFmtU64(sz2, g_cTools), kwFmtU64(sz3, g_cModules), kwFmtU64(sz4, g_cNonNativeModules));
+    off += sprintf(&szBuf[off], "%s %14s bytes in %s read-cached files, avg %s bytes\n", szPrf,
+                   kwFmtU64(sz1, g_cbReadCachedFiles), kwFmtU64(sz2, g_cReadCachedFiles),
+                   kwFmtU64(sz3, g_cbReadCachedFiles / K_MAX(g_cReadCachedFiles, 1)));
+
+    off += sprintf(&szBuf[off], "%s %14s bytes read in %s calls\n",
+                   szPrf, kwFmtU64(sz1, g_cbReadFileTotal), kwFmtU64(sz2, g_cReadFileCalls));
+
+    off += sprintf(&szBuf[off], "%s %14s bytes read (%u%%) in %s calls (%u%%) from read cached files\n", szPrf,
+                   kwFmtU64(sz1, g_cbReadFileFromReadCached), (unsigned)(g_cbReadFileFromReadCached * (KU64)100 / g_cbReadFileTotal),
+                   kwFmtU64(sz2, g_cReadFileFromReadCached), (unsigned)(g_cReadFileFromReadCached * (KU64)100 / g_cReadFileCalls));
+
+    off += sprintf(&szBuf[off], "%s %14s bytes read (%u%%) in %s calls (%u%%) from in-memory temporary files\n", szPrf,
+                   kwFmtU64(sz1, g_cbReadFileFromInMemTemp), (unsigned)(g_cbReadFileFromInMemTemp * (KU64)100 / K_MAX(g_cbReadFileTotal, 1)),
+                   kwFmtU64(sz2, g_cReadFileFromInMemTemp), (unsigned)(g_cReadFileFromInMemTemp * (KU64)100 / K_MAX(g_cReadFileCalls, 1)));
+
+    off += sprintf(&szBuf[off], "%s %14s bytes written in %s calls\n", szPrf,
+                   kwFmtU64(sz1, g_cbWriteFileTotal), kwFmtU64(sz2, g_cWriteFileCalls));
+    off += sprintf(&szBuf[off], "%s %14s bytes written (%u%%) in %s calls (%u%%) to in-memory temporary files\n", szPrf,
+                   kwFmtU64(sz1, g_cbWriteFileToInMemTemp),
+                   (unsigned)(g_cbWriteFileToInMemTemp * (KU64)100 / K_MAX(g_cbWriteFileTotal, 1)),
+                   kwFmtU64(sz2, g_cWriteFileToInMemTemp),
+                   (unsigned)(g_cWriteFileToInMemTemp * (KU64)100 / K_MAX(g_cWriteFileCalls, 1)));
+
+    off += sprintf(&szBuf[off], "%s %14s bytes for the cache\n", szPrf,
+                   kwFmtU64(sz1, g_pFsCache->cbObjects + g_pFsCache->cbAnsiPaths + g_pFsCache->cbUtf16Paths + sizeof(*g_pFsCache)));
+    off += sprintf(&szBuf[off], "%s %14s objects, taking up %s bytes, avg %s bytes\n", szPrf,
+                   kwFmtU64(sz1, g_pFsCache->cObjects),
+                   kwFmtU64(sz2, g_pFsCache->cbObjects),
+                   kwFmtU64(sz3, g_pFsCache->cbObjects / g_pFsCache->cObjects));
+    off += sprintf(&szBuf[off], "%s %14s A path hashes, taking up %s bytes, avg %s bytes, %s collision\n", szPrf,
+                   kwFmtU64(sz1, g_pFsCache->cAnsiPaths),
+                   kwFmtU64(sz2, g_pFsCache->cbAnsiPaths),
+                   kwFmtU64(sz3, g_pFsCache->cbAnsiPaths / K_MAX(g_pFsCache->cAnsiPaths, 1)),
+                   kwFmtU64(sz4, g_pFsCache->cAnsiPathCollisions));
+#ifdef KFSCACHE_CFG_UTF16
+    off += sprintf(&szBuf[off], "%s %14s W path hashes, taking up %s bytes, avg %s bytes, %s collisions\n", szPrf,
+                   kwFmtU64(sz1, g_pFsCache->cUtf16Paths),
+                   kwFmtU64(sz2, g_pFsCache->cbUtf16Paths),
+                   kwFmtU64(sz3, g_pFsCache->cbUtf16Paths / K_MAX(g_pFsCache->cUtf16Paths, 1)),
+                   kwFmtU64(sz4, g_pFsCache->cUtf16PathCollisions));
+#endif
+    off += sprintf(&szBuf[off], "%s %14s child hash tables, total of %s entries, %s children inserted, %s collisions\n", szPrf,
+                   kwFmtU64(sz1, g_pFsCache->cChildHashTabs),
+                   kwFmtU64(sz2, g_pFsCache->cChildHashEntriesTotal),
+                   kwFmtU64(sz3, g_pFsCache->cChildHashed),
+                   kwFmtU64(sz4, g_pFsCache->cChildHashCollisions));
+
+    cMisses = g_pFsCache->cLookups - g_pFsCache->cPathHashHits - g_pFsCache->cWalkHits;
+    off += sprintf(&szBuf[off], "%s %14s lookups: %s (%u%%) path hash hits, %s (%u%%) walks hits, %s (%u%%) misses\n", szPrf,
+                   kwFmtU64(sz1, g_pFsCache->cLookups),
+                   kwFmtU64(sz2, g_pFsCache->cPathHashHits),
+                   (unsigned)(g_pFsCache->cPathHashHits * (KU64)100 / K_MAX(g_pFsCache->cLookups, 1)),
+                   kwFmtU64(sz3, g_pFsCache->cWalkHits),
+                   (unsigned)(g_pFsCache->cWalkHits * (KU64)100 / K_MAX(g_pFsCache->cLookups, 1)),
+                   kwFmtU64(sz4, cMisses),
+                   (unsigned)(cMisses * (KU64)100 / K_MAX(g_pFsCache->cLookups, 1)));
+
+    off += sprintf(&szBuf[off], "%s %14s child searches, %s (%u%%) hash hits\n", szPrf,
+                   kwFmtU64(sz1, g_pFsCache->cChildSearches),
+                   kwFmtU64(sz2, g_pFsCache->cChildHashHits),
+                   (unsigned)(g_pFsCache->cChildHashHits * (KU64)100 / K_MAX(g_pFsCache->cChildSearches, 1)));
+    off += sprintf(&szBuf[off], "%s %14s name changes, growing %s times (%u%%)\n", szPrf,
+                   kwFmtU64(sz1, g_pFsCache->cNameChanges),
+                   kwFmtU64(sz2, g_pFsCache->cNameGrowths),
+                   (unsigned)(g_pFsCache->cNameGrowths * 100 / K_MAX(g_pFsCache->cNameChanges, 1)) );
+
+#ifdef WITH_HASH_CACHE
+    off += sprintf(&szBuf[off], "%s %14s hashes calculated, %s cache hits (%u%%), %s fallbacks, %s partial\n", szPrf,
+                   kwFmtU64(sz1, g_cHashes),
+                   kwFmtU64(sz2, g_cHashesCached),
+                   (unsigned)(g_cHashesCached * 100 / K_MAX(g_cHashes, 1)),
+                   kwFmtU64(sz3, g_cHashesFallbacks),
+                   kwFmtU64(sz4, g_cHashesPartial));
+    off += sprintf(&szBuf[off], "%s %14s MD5: %s  SHA-1: %s  SHA-256: %s  SHA-512: %s\n", szPrf, "", kwFmtU64(sz1, g_cHashesMd5),
+                   kwFmtU64(sz2, g_cHashesSha1), kwFmtU64(sz3, g_cHashesSha256), kwFmtU64(sz4, g_cHashesSha512));
+#endif
+
+    /*
+     * Process & Memory details.
+     */
+    if (!GetProcessHandleCount(GetCurrentProcess(), &cHandles))
+        cHandles = 0;
+    MemInfo.cb = sizeof(MemInfo);
+    if (!GetProcessMemoryInfo(GetCurrentProcess(), (PPROCESS_MEMORY_COUNTERS)&MemInfo, sizeof(MemInfo)))
+        memset(&MemInfo, 0, sizeof(MemInfo));
+    off += sprintf(&szBuf[off], "%s %14s handles; %s page faults; %s bytes page file, peaking at %s bytes\n", szPrf,
+                   kwFmtU64(sz1, cHandles),
+                   kwFmtU64(sz2, MemInfo.PageFaultCount),
+                   kwFmtU64(sz3, MemInfo.PagefileUsage),
+                   kwFmtU64(sz4, MemInfo.PeakPagefileUsage));
+    off += sprintf(&szBuf[off], "%s %14s bytes working set, peaking at %s bytes; %s byte private\n", szPrf,
+                   kwFmtU64(sz1, MemInfo.WorkingSetSize),
+                   kwFmtU64(sz2, MemInfo.PeakWorkingSetSize),
+                   kwFmtU64(sz3, MemInfo.PrivateUsage));
+    off += sprintf(&szBuf[off], "%s %14s bytes non-paged pool, peaking at %s bytes; %s bytes paged pool, peaking at %s bytes\n",
+                   szPrf,
+                   kwFmtU64(sz1, MemInfo.QuotaNonPagedPoolUsage),
+                   kwFmtU64(sz2, MemInfo.QuotaPeakNonPagedPoolUsage),
+                   kwFmtU64(sz3, MemInfo.QuotaPagedPoolUsage),
+                   kwFmtU64(sz4, MemInfo.QuotaPeakPagedPoolUsage));
+
+    if (!GetProcessIoCounters(GetCurrentProcess(), &IoCounters))
+        memset(&IoCounters, 0, sizeof(IoCounters));
+    off += sprintf(&szBuf[off], "%s %14s bytes in %s reads [src: OS]\n", szPrf,
+                   kwFmtU64(sz1, IoCounters.ReadTransferCount),
+                   kwFmtU64(sz2, IoCounters.ReadOperationCount));
+    off += sprintf(&szBuf[off], "%s %14s bytes in %s writes [src: OS]\n", szPrf,
+                   kwFmtU64(sz1, IoCounters.WriteTransferCount),
+                   kwFmtU64(sz2, IoCounters.WriteOperationCount));
+    off += sprintf(&szBuf[off], "%s %14s bytes in %s other I/O operations [src: OS]\n", szPrf,
+                   kwFmtU64(sz1, IoCounters.OtherTransferCount),
+                   kwFmtU64(sz2, IoCounters.OtherOperationCount));
+
+    MemStatus.dwLength = sizeof(MemStatus);
+    if (!GlobalMemoryStatusEx(&MemStatus))
+        memset(&MemStatus, 0, sizeof(MemStatus));
+    off += sprintf(&szBuf[off], "%s %14s bytes used VA, %#" KX64_PRI " bytes available\n", szPrf,
+                   kwFmtU64(sz1, MemStatus.ullTotalVirtual - MemStatus.ullAvailVirtual),
+                   MemStatus.ullAvailVirtual);
+    off += sprintf(&szBuf[off], "%s %14u %% system memory load\n", szPrf, MemStatus.dwMemoryLoad);
+
+    maybe_con_fwrite(szBuf, off, 1, stdout);
+    fflush(stdout);
+}
+
+
+/**
+ * Handles what comes after --test.
+ *
+ * @returns Exit code.
+ * @param   argc                Number of arguments after --test.
+ * @param   argv                Arguments after --test.
+ */
+static int kwTestRun(int argc, char **argv)
+{
+    int         i;
+    int         j;
+    int         rcExit;
+    int         cRepeats;
+    char        szCwd[MAX_PATH];
+    const char *pszCwd = getcwd(szCwd, sizeof(szCwd));
+    KU32        cEnvVars;
+    char      **papszEnvVars;
+    const char *pszSpecialEnv = "";
+    const char *pszSpecialEnvFull = NULL;
+    KBOOL       fWatcomBrainDamange = K_FALSE;
+    KBOOL       fNoPchCaching = K_FALSE;
+
+    /*
+     * Parse arguments.
+     */
+    /* Repeat count. */
+    i = 0;
+    if (i >= argc)
+        return kwErrPrintfRc(2, "--test takes an repeat count argument or '--'!\n");
+    if (strcmp(argv[i], "--") != 0)
+    {
+        cRepeats = atoi(argv[i]);
+        if (cRepeats <= 0)
+            return kwErrPrintfRc(2, "The repeat count '%s' is zero, negative or invalid!\n", argv[i]);
+        i++;
+
+        /* Optional directory change. */
+        if (   i < argc
+            && (   strcmp(argv[i], "--chdir") == 0
+                || strcmp(argv[i], "-C")      == 0 ) )
+        {
+            i++;
+            if (i >= argc)
+                return kwErrPrintfRc(2, "--chdir takes an argument!\n");
+            pszCwd = argv[i++];
+        }
+
+        /* Optional watcom flag directory change. */
+        if (   i < argc
+            && (   strcmp(argv[i], "--wcc-brain-damage") == 0
+                || strcmp(argv[i], "--watcom-brain-damage") == 0) )
+        {
+            fWatcomBrainDamange = K_TRUE;
+            i++;
+        }
+
+        /* Optional watcom flag directory change. */
+        if (   i < argc
+            && strcmp(argv[i], "--no-pch-caching") == 0)
+        {
+            fNoPchCaching = K_TRUE;
+            i++;
+        }
+
+        /* Optional directory change. */
+        if (   i < argc
+            && (   strcmp(argv[i], "--set-special") == 0
+                || strcmp(argv[i], "-s")      == 0 ) )
+        {
+            i++;
+            if (i >= argc)
+                return kwErrPrintfRc(2, "--set-special takes an argument!\n");
+            pszSpecialEnvFull = argv[i++];
+            putenv(pszSpecialEnvFull);
+            pszSpecialEnv = strdup(pszSpecialEnvFull);
+            *strchr(pszSpecialEnv, '=') = '\0';
+        }
+
+        /* Trigger breakpoint */
+        if (   i < argc
+            && strcmp(argv[i], "--breakpoint") == 0)
+        {
+            __debugbreak();
+            i++;
+        }
+
+        /* Check for '--'. */
+        if (i >= argc)
+            return kwErrPrintfRc(2, "Missing '--'\n");
+        if (strcmp(argv[i], "--") != 0)
+            return kwErrPrintfRc(2, "Expected '--' found '%s'\n", argv[i]);
+        i++;
+    }
+    else
+    {
+        cRepeats = 1;
+        i++;
+    }
+    if (i >= argc)
+        return kwErrPrintfRc(2, "Nothing to execute after '--'!\n");
+
+    /*
+     * Duplicate the environment.
+     */
+    cEnvVars = 0;
+    while (environ[cEnvVars] != NULL)
+        cEnvVars++;
+    papszEnvVars = (char **)kHlpAllocZ(sizeof(papszEnvVars[0]) * (cEnvVars + 2));
+
+    /*
+     * Do the job.
+     */
+    rcExit = 0;
+    for (j = 0; j < cRepeats; j++)
+    {
+        memcpy(papszEnvVars, environ, sizeof(papszEnvVars[0]) * cEnvVars);
+        rcExit = kSubmitHandleJobUnpacked(argv[i], pszCwd,
+                                          argc - i, &argv[i], fWatcomBrainDamange,
+                                          cEnvVars, papszEnvVars, pszSpecialEnv, fNoPchCaching,
+                                          0, NULL);
+        KW_LOG(("rcExit=%d\n", rcExit));
+        kwSandboxCleanupLate(&g_Sandbox);
+    }
+
+    if (getenv("KWORKER_STATS") != NULL)
+        kwPrintStats();
+
+# ifdef WITH_LOG_FILE
+    if (g_hLogFile != INVALID_HANDLE_VALUE && g_hLogFile != NULL)
+        CloseHandle(g_hLogFile);
+# endif
+    return rcExit;
+}
+
+
+/**
+ * Reads @a pszFile into memory and chops it up into an argument vector.
+ *
+ * @returns Pointer to the argument vector on success, NULL on failure.
+ * @param   pszFile         The file to load.
+ * @param   pcArgs          Where to return the number of arguments.
+ * @param   ppszFileContent Where to return the allocation.
+ */
+static char **kwFullTestLoadArgvFile(const char *pszFile, int *pcArgs, char **ppszFileContent)
+{
+    char **papszArgs = NULL;
+    FILE  *pFile     = fopen(pszFile, "r");
+    if (pFile)
+    {
+        long cbFile;
+        if (   fseek(pFile, 0, SEEK_END) == 0
+            && (cbFile = ftell(pFile)) >= 0
+            && fseek(pFile, 0, SEEK_SET) == 0)
+        {
+            char *pszFile = kHlpAllocZ(cbFile + 3);
+            if (pszFile)
+            {
+                size_t cbRead = fread(pszFile, 1, cbFile + 1, pFile);
+                if (   feof(pFile)
+                    && !ferror(pFile))
+                {
+                    size_t off        = 0;
+                    int    cArgs      = 0;
+                    int    cAllocated = 0;
+                    char   ch;
+
+                    pszFile[cbRead]     = '\0';
+                    pszFile[cbRead + 1] = '\0';
+                    pszFile[cbRead + 2] = '\0';
+
+                    while ((ch = pszFile[off]) != '\0')
+                    {
+                        char *pszArg;
+                        switch (ch)
+                        {
+                            case ' ':
+                            case '\t':
+                            case '\n':
+                            case '\r':
+                                off++;
+                                continue;
+
+                            case '\\':
+                                if (pszFile[off + 1] == '\n' || pszFile[off + 1] == '\r')
+                                {
+                                    off += 2;
+                                    continue;
+                                }
+                                /* fall thru */
+                            default:
+                                pszArg = &pszFile[off];
+                                do
+                                    ch = pszFile[++off];
+                                while (ch != '\0' && ch != ' ' && ch != '\t' && ch != '\n' && ch != '\r');
+                                pszFile[off++] = '\0';
+                                break;
+
+                            case '\'':
+                                pszArg = &pszFile[++off];
+                                while ((ch = pszFile[off]) != '\0' && ch != '\'')
+                                    off++;
+                                pszFile[off++] = '\0';
+                                break;
+
+                            case '\"': /** @todo escape sequences */
+                                pszArg = &pszFile[++off];
+                                while ((ch = pszFile[off]) != '\0' && ch != '"')
+                                    off++;
+                                pszFile[off++] = '\0';
+                                break;
+                        }
+                        if (cArgs + 1 >= cAllocated)
+                        {
+                            void *pvNew;
+                            cAllocated = cAllocated ? cAllocated * 2 : 16;
+                            pvNew = kHlpRealloc(papszArgs, cAllocated * sizeof(papszArgs[0]));
+                            if (pvNew)
+                                papszArgs = (char **)pvNew;
+                            else
+                            {
+                                kHlpFree(papszArgs);
+                                papszArgs = NULL;
+                                break;
+                            }
+                        }
+                        papszArgs[cArgs] = pszArg;
+                        papszArgs[++cArgs] = NULL;
+                    }
+                    *pcArgs = cArgs;
+                }
+                else
+                    kwErrPrintf("Error reading '%s'!\n", pszFile);
+            }
+            else
+                kwErrPrintf("Error allocating %lu bytes!\n", cbFile + 2);
+        }
+        else
+            kwErrPrintf("Error seeking '%s'!\n", pszFile);
+        fclose(pFile);
+    }
+    else
+        kwErrPrintf("Error opening '%s'!\n", pszFile);
+    return papszArgs;
+}
+
+/**
+ * Appends a string to an string vector (arguments or enviornment).
+ *
+ * @returns 0 on success, non-zero on failure (exit code).
+ * @param   ppapszVector    Pointer to the string pointer array.
+ * @param   pcEntries       Pointer to the array size.
+ * @param   pszAppend       The string to append.
+ */
+static int kwFullTestVectorAppend(const char ***ppapszVector, KU32 *pcEntries, char const *pszAppend)
+{
+    KU32 cEntries = *pcEntries;
+    if (!(cEntries & 15))
+    {
+        void *pvNew = kHlpRealloc((void *)*ppapszVector, sizeof(char *) * (cEntries + 16 + 1));
+        if (pvNew)
+            *ppapszVector = (const char **)pvNew;
+        else
+            return kwErrPrintfRc(2, "Out of memory!\n");
+    }
+    (*ppapszVector)[cEntries] = pszAppend;
+    (*ppapszVector)[++cEntries] = NULL;
+    *pcEntries = cEntries;
+    return 0;
+}
+
+
+/**
+ * Parses arguments for --full-test.
+ *
+ * @returns 0 on success, non-zero on failure (exit code).
+ */
+static int kwFullTestRunParseArgs(PKWONETEST *ppHead, int *piState, int argc, char **argv,
+                                  const char *pszDefaultCwd, int cRecursions, const char *pszJobSrc)
+{
+    PKWONETEST pCur = *ppHead;
+    int i;
+    for (i = 0; i < argc; i++)
+    {
+        int         rc     = 0;
+        const char *pszArg = argv[i];
+        if (*pszArg == 'k')
+        {
+            if (kHlpStrComp(pszArg, "kSubmit") == 0)
+            {
+                if (*piState != 0)
+                {
+                    pCur = (PKWONETEST)kHlpAllocZ(sizeof(*pCur));
+                    if (!pCur)
+                        return kwErrPrintfRc(2, "Out of memory!\n");
+                    pCur->fVirgin   = K_TRUE;
+                    pCur->pszCwd    = pszDefaultCwd;
+                    pCur->cRuns     = 1;
+                    pCur->pNext     = *ppHead;
+                    *ppHead = pCur;
+                    *piState = 0;
+                }
+                else if (!pCur->fVirgin)
+                    return kwErrPrintfRc(2, "Unexpected 'kSubmit' as argument #%u\n", i);
+                pCur->pszJobSrc = pszJobSrc;
+                pCur->iJobSrc   = i;
+                continue; /* (to stay virgin) */
+            }
+
+            /* Ignore "kWorker 378172/62:" sequences that kmk/kSubmit spews out on failure. */
+            if (   kHlpStrComp(pszArg, "kWorker") == 0
+                && i + 1 < argc
+                && (unsigned)(argv[i + 1][0] - '0') <= 9)
+            {
+                i++;
+                continue;
+            }
+        }
+
+        if (   *pszArg == '-'
+            && (   *piState == 0
+                || pszArg[1] == '@'))
+        {
+            const char *pszValue = NULL;
+            char        ch       = *++pszArg;
+            pszArg++;
+            if (ch == '-')
+            {
+                ch = '\0';
+                if (*pszArg == '\0') /* -- */
+                    *piState = 2;
+                /* Translate or handle long options: */
+                else if (kHlpStrComp(pszArg, "putenv") == 0 || kHlpStrComp(pszArg, "set") == 0)
+                    ch = 'E';
+                else if (kHlpStrComp(pszArg, "special-env") == 0)
+                    ch = 's';
+                else if (kHlpStrComp(pszArg, "default-env") == 0)
+                {
+                    unsigned i;
+                    pCur->cEnvVars = 0;
+                    for (i = 0; environ[i] && rc == 0; i++)
+                        rc = kwFullTestVectorAppend(&pCur->papszEnvVars, &pCur->cEnvVars, kHlpStrDup(environ[i])); /* leaks; unchecked */
+                }
+                else if (kHlpStrComp(pszArg, "chdir") == 0)
+                    ch = 'C';
+                else if (kHlpStrComp(pszArg, "post-cmd") == 0)
+                    ch = 'P';
+                else if (kHlpStrComp(pszArg, "response-file") == 0)
+                    ch = '@';
+                else if (kHlpStrComp(pszArg, "runs") == 0)
+                    ch = 'R';
+                else if (kHlpStrComp(pszArg, "watcom-brain-damage") == 0)
+                    pCur->fWatcomBrainDamange = K_TRUE;
+                else if (kHlpStrComp(pszArg, "no-pch-caching") == 0)
+                    pCur->fNoPchCaching = K_TRUE;
+                else if (kHlpStrComp(pszArg, "executable") == 0)
+                    ch = 'e';
+                else if (kHlpStrComp(pszArg, "breakpoint") == 0)
+                {
+                    __debugbreak();
+                    continue; /* (to stay virgin) */
+                }
+                else
+                    return kwErrPrintfRc(2, "Unknown option: --%s\n", pszArg);
+                pszArg = "";
+            }
+
+            while (ch != '\0' && rc == 0)
+            {
+                /* Fetch value if needed: */
+                switch (ch)
+                {
+                    case '@':
+                    case 'e':
+                    case 'E':
+                    case 's':
+                    case 'C':
+                    case 'R':
+                        if (*pszArg == ':' || *pszArg == '=')
+                            pszValue = &pszArg[1];
+                        else if (*pszArg)
+                            pszValue = pszArg;
+                        else if (i + 1 < argc)
+                            pszValue = argv[++i];
+                        else
+                            return kwErrPrintfRc(2, "Option -%c takes a value\n", ch);
+                        pszArg = "";
+                        break;
+                }
+
+                /* Handle the option: */
+                switch (ch)
+                {
+                    case 'E':
+                        rc = kwFullTestVectorAppend(&pCur->papszEnvVars, &pCur->cEnvVars, pszValue);
+                        break;
+                    case 'C':
+                        pCur->pszCwd = pszValue;
+                        break;
+                    case 's':
+                        pCur->pszSpecialEnv = pszValue;
+                        break;
+                    case 'e':
+                        pCur->pszExecutable = pszValue;
+                        break;
+                    case 'P':
+                        *piState = 1;
+                        if (*pszArg)
+                            return kwErrPrintfRc(2, "Option -P cannot be followed by other options!\n");
+                        break;
+                    case 'R':
+                        pCur->cRuns = atoi(pszValue);
+                        if ((int)pCur->cRuns < 0)
+                            return kwErrPrintfRc(2, "Option -R takes a positive (or zero) integer as value: %s\n", pszValue);
+                        break;
+                    case '@':
+                        if (cRecursions < 5)
+                        {
+                            char    *pszLeaked = NULL;
+                            int      cArgs     = 0;
+                            char   **papszArgsLeaked = kwFullTestLoadArgvFile(pszValue, &cArgs, &pszLeaked);
+                            if (papszArgsLeaked)
+                            {
+                                rc = kwFullTestRunParseArgs(ppHead, piState, cArgs, papszArgsLeaked, pszDefaultCwd,
+                                                            cRecursions + 1, pszValue);
+                                pCur = *ppHead;
+                            }
+                            else
+                                return 2;
+                        }
+                        else
+                            return kwErrPrintfRc(2, "Too deep response file nesting!\n");
+                        break;
+                }
+
+                /* next */
+                ch = *pszArg++;
+            }
+        }
+        else if (*piState == 2)
+            rc = kwFullTestVectorAppend(&pCur->papszArgs, &pCur->cArgs, pszArg);
+        else if (*piState == 1)
+        {
+            if (pszArg[0] != '-' || pszArg[1] != '-' || pszArg[2] != '\0')
+                rc = kwFullTestVectorAppend(&pCur->papszPostCmdArgs, &pCur->cPostCmdArgs, pszArg);
+            else
+                *piState = 2;
+        }
+        else
+            return kwErrPrintfRc(2, "Unexpected argument: %s\n", pszArg);
+        if (rc)
+            return rc;
+        pCur->fVirgin = K_FALSE;
+    }
+    return 0;
+}
+
+
+/**
+ * Handles what comes after --full-test.
+ *
+ * @returns Exit code.
+ * @param   argc                Number of arguments after --full-test.
+ * @param   argv                Arguments after --full-test.
+ */
+static int kwFullTestRun(int argc, char **argv)
+{
+    char        szDefaultCwd[MAX_PATH];
+    const char *pszDefaultCwd = getcwd(szDefaultCwd, sizeof(szDefaultCwd));
+    KWONETEST   FirstTest;
+    PKWONETEST  pHead = &FirstTest;
+    PKWONETEST  pCur;
+    int         iState = 0;
+    int         rcExit;
+
+    /*
+     * Parse arguments.
+     */
+    kHlpMemSet(&FirstTest, 0, sizeof(FirstTest));
+    FirstTest.pszJobSrc = "command-line";
+    FirstTest.iJobSrc   = 1;
+    FirstTest.fVirgin   = K_TRUE;
+    FirstTest.pszCwd    = pszDefaultCwd;
+    FirstTest.cRuns     = 1;
+
+    rcExit = kwFullTestRunParseArgs(&pHead, &iState, argc, argv, pszDefaultCwd, 0, "command-line");
+    if (rcExit)
+        return rcExit;
+
+    /*
+     * Do the job.  LIFO ordering (see kSubmit).
+     */
+    for (pCur = pHead; pCur; pCur = pCur->pNext)
+    {
+        if (!pCur->pszExecutable && pCur->papszArgs)
+            pCur->pszExecutable = pCur->papszArgs[0];
+        if (   pCur->pszExecutable
+            && pCur->cArgs > 0
+            && pCur->cEnvVars > 0)
+        {
+            size_t const    cbEnvVarCopy     = sizeof(pCur->papszEnvVars[0]) * (pCur->cEnvVars + 1);
+            char ** const   papszEnvVarsCopy = (char **)kHlpDup(pCur->papszEnvVars, cbEnvVarCopy);
+            unsigned        iRun;
+
+            for (iRun = 0; iRun < pCur->cRuns; iRun++)
+            {
+                rcExit = kSubmitHandleJobUnpacked(pCur->pszExecutable, pCur->pszCwd,
+                                                  pCur->cArgs, pCur->papszArgs, pCur->fWatcomBrainDamange,
+                                                  pCur->cEnvVars, pCur->papszEnvVars, pCur->pszSpecialEnv,
+                                                  pCur->fNoPchCaching, pCur->cPostCmdArgs, pCur->papszPostCmdArgs);
+
+                KW_LOG(("rcExit=%d\n", rcExit));
+                kwSandboxCleanupLate(&g_Sandbox);
+
+                memcpy((void *)pCur->papszEnvVars, papszEnvVarsCopy, cbEnvVarCopy);
+            }
+            kHlpFree(papszEnvVarsCopy);
+        }
+        else
+            rcExit = kwErrPrintfRc(2, "Job is underspecified! %s%s%s (Job started with argument #%u, %s)\n",
+                                   pCur->pszExecutable ? "" : " No executable!",
+                                   pCur->cArgs < 1 ? " No arguments!" : "",
+                                   pCur->cEnvVars < 1 ? " No environment!" : "",
+                                   pCur->iJobSrc, pCur->pszJobSrc);
+    }
+
+    if (getenv("KWORKER_STATS") != NULL)
+        kwPrintStats();
+
+# ifdef WITH_LOG_FILE
+    if (g_hLogFile != INVALID_HANDLE_VALUE && g_hLogFile != NULL)
+        CloseHandle(g_hLogFile);
+# endif
+    return rcExit;
+}
+
+
+/**
+ * Helper for main() argument handling that sets the processor group if
+ * possible.
+ */
+static void kwSetProcessorGroup(unsigned long uGroup)
+{
+    typedef BOOL (WINAPI *PFNSETTHREADGROUPAFFINITY)(HANDLE, const GROUP_AFFINITY*, GROUP_AFFINITY *);
+    HMODULE             const hmodKernel32 = GetModuleHandleW(L"KERNEL32.DLL");
+    PFNSETTHREADGROUPAFFINITY pfnSetThreadGroupAffinity;
+
+    pfnSetThreadGroupAffinity = (PFNSETTHREADGROUPAFFINITY)GetProcAddress(hmodKernel32, "SetThreadGroupAffinity");
+    if (pfnSetThreadGroupAffinity)
+    {
+        GROUP_AFFINITY OldAff = { 0,            0, 0, 0, 0 };
+        GROUP_AFFINITY NewAff = { 0, (WORD)uGroup, 0, 0, 0 };
+        NewAff.Mask = win_get_processor_group_active_mask((WORD)uGroup);
+        if (NewAff.Mask && (WORD)uGroup == uGroup)
+        {
+            if (!pfnSetThreadGroupAffinity(GetCurrentThread(), &NewAff, &OldAff))
+                kwErrPrintf("Failed to set processor group to %lu (%p): %u\n", uGroup, NewAff.Mask, GetLastError());
+        }
+        else if (GetLastError() == NO_ERROR)
+            kwErrPrintf("Cannot set processor group to %lu: No active processors in group!\n", uGroup);
+        else
+            kwErrPrintf("Cannot set processor group to %lu: GetLogicalProcessorInformationEx failed: %u\n",
+                        uGroup, GetLastError());
+    }
+    else
+    {
+        OSVERSIONINFOA VerInfo = {0};
+        if (VerInfo.dwMajorVersion > 6 || (VerInfo.dwMajorVersion == 6 && VerInfo.dwMinorVersion >= 1))
+            kwErrPrintf("Cannot set processor group to %lu: SetThreadGroupAffinity no found! (Windows version %lu.%lu)\n",
+                        uGroup, VerInfo.dwMajorVersion, VerInfo.dwMinorVersion);
+    }
+}
+
+
+int main(int argc, char **argv)
+{
+#if defined(KBUILD_OS_WINDOWS) && defined(KBUILD_ARCH_X86)
+    PVOID                           pvVecXcptHandler = AddVectoredExceptionHandler(0 /*called last*/,
+                                                                                   kwSandboxVecXcptEmulateChained);
+#endif
+    KSIZE                           cbMsgBuf = 0;
+    KU8                            *pbMsgBuf = NULL;
+    int                             i;
+    HANDLE                          hPipe = INVALID_HANDLE_VALUE;
+    const char                     *pszTmp;
+    KFSLOOKUPERROR                  enmIgnored;
+    DWORD                           dwType;
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+    HANDLE                          hCurProc       = GetCurrentProcess();
+    PPEB                            pPeb           = kwSandboxGetProcessEnvironmentBlock();
+    PMY_RTL_USER_PROCESS_PARAMETERS pProcessParams = (PMY_RTL_USER_PROCESS_PARAMETERS)pPeb->ProcessParameters;
+#endif
+#if defined(KBUILD_OS_WINDOWS) && defined(KBUILD_ARCH_X86)
+    K_NOREF(pvVecXcptHandler);
+#endif
+
+#ifdef WITH_FIXED_VIRTUAL_ALLOCS
+    /*
+     * Reserve memory for cl.exe
+     */
+    for (i = 0; i < K_ELEMENTS(g_aFixedVirtualAllocs); i++)
+    {
+        g_aFixedVirtualAllocs[i].fInUse     = K_FALSE;
+        g_aFixedVirtualAllocs[i].pvReserved = VirtualAlloc((void *)g_aFixedVirtualAllocs[i].uFixed,
+                                                           g_aFixedVirtualAllocs[i].cbFixed,
+                                                           MEM_RESERVE, PAGE_READWRITE);
+        if (   !g_aFixedVirtualAllocs[i].pvReserved
+            || g_aFixedVirtualAllocs[i].pvReserved != (void *)g_aFixedVirtualAllocs[i].uFixed)
+        {
+            kwErrPrintf("Failed to reserve %p LB %#x: %u\n", g_aFixedVirtualAllocs[i].uFixed, g_aFixedVirtualAllocs[i].cbFixed,
+                        GetLastError());
+            if (g_aFixedVirtualAllocs[i].pvReserved)
+            {
+                VirtualFree(g_aFixedVirtualAllocs[i].pvReserved, g_aFixedVirtualAllocs[i].cbFixed, MEM_RELEASE);
+                g_aFixedVirtualAllocs[i].pvReserved = NULL;
+            }
+        }
+    }
+#endif
+
+    /*
+     * Register our Control-C and Control-Break handlers.
+     */
+    if (!SetConsoleCtrlHandler(kwSandboxCtrlHandler, TRUE /*fAdd*/))
+        return kwErrPrintfRc(3, "SetConsoleCtrlHandler failed: %u\n", GetLastError());
+
+    /*
+     * Create the cache and mark the temporary directory as using the custom revision.
+     */
+    g_pFsCache = kFsCacheCreate(KFSCACHE_F_MISSING_OBJECTS | KFSCACHE_F_MISSING_PATHS);
+    if (!g_pFsCache)
+        return kwErrPrintfRc(3, "kFsCacheCreate failed!\n");
+
+    pszTmp = getenv("TEMP");
+    if (pszTmp && *pszTmp != '\0')
+        kFsCacheSetupCustomRevisionForTree(g_pFsCache, kFsCacheLookupA(g_pFsCache, pszTmp, &enmIgnored));
+    pszTmp = getenv("TMP");
+    if (pszTmp && *pszTmp != '\0')
+        kFsCacheSetupCustomRevisionForTree(g_pFsCache, kFsCacheLookupA(g_pFsCache, pszTmp, &enmIgnored));
+    pszTmp = getenv("TMPDIR");
+    if (pszTmp && *pszTmp != '\0')
+        kFsCacheSetupCustomRevisionForTree(g_pFsCache, kFsCacheLookupA(g_pFsCache, pszTmp, &enmIgnored));
+
+    /*
+     * Make g_abDefLdBuf executable.
+     */
+    if (!VirtualProtect(g_abDefLdBuf, sizeof(g_abDefLdBuf), PAGE_EXECUTE_READWRITE, &dwType))
+        return kwErrPrintfRc(3, "VirtualProtect(%p, %#x, PAGE_EXECUTE_READWRITE,NULL) failed: %u\n",
+                             g_abDefLdBuf, sizeof(g_abDefLdBuf), GetLastError());
+    InitializeCriticalSection(&g_Sandbox.HandlesLock);
+    InitializeCriticalSection(&g_Sandbox.VirtualAllocLock);
+
+#ifdef WITH_CONSOLE_OUTPUT_BUFFERING
+    /*
+     * Get and duplicate the console handles.
+     */
+    /* Standard output. */
+    g_Sandbox.StdOut.hOutput = pProcessParams->StandardOutput;
+    if (!DuplicateHandle(hCurProc, pProcessParams->StandardOutput, hCurProc, &g_Sandbox.StdOut.hBackup,
+                         GENERIC_WRITE, FALSE /*fInherit*/, DUPLICATE_SAME_ACCESS))
+        kHlpAssertFailedStmt(g_Sandbox.StdOut.hBackup = pProcessParams->StandardOutput);
+    dwType = GetFileType(g_Sandbox.StdOut.hOutput);
+    g_Sandbox.StdOut.fIsConsole = dwType == FILE_TYPE_CHAR;
+    g_Sandbox.StdOut.fFileType  = (dwType & ~FILE_TYPE_REMOTE) < 0xf
+                                ? (KU8)((dwType & ~FILE_TYPE_REMOTE) | (dwType >> 8)) : KU8_MAX;
+    g_Sandbox.HandleStdOut.enmType         = KWHANDLETYPE_OUTPUT_BUF;
+    g_Sandbox.HandleStdOut.cRefs           = 0x10001;
+    g_Sandbox.HandleStdOut.dwDesiredAccess = GENERIC_WRITE;
+    g_Sandbox.HandleStdOut.tidOwner        = KU32_MAX;
+    g_Sandbox.HandleStdOut.u.pOutBuf       = &g_Sandbox.StdOut;
+    g_Sandbox.HandleStdOut.hHandle         = g_Sandbox.StdOut.hOutput;
+    if (g_Sandbox.StdOut.hOutput != INVALID_HANDLE_VALUE)
+    {
+        if (kwSandboxHandleTableEnter(&g_Sandbox, &g_Sandbox.HandleStdOut, g_Sandbox.StdOut.hOutput))
+            g_Sandbox.cFixedHandles++;
+        else
+            return kwErrPrintfRc(3, "kwSandboxHandleTableEnter failed for StdOut (%p)!\n", g_Sandbox.StdOut.hOutput);
+    }
+    KWOUT_LOG(("StdOut: hOutput=%p (%p) fIsConsole=%d dwType=%#x\n",
+               g_Sandbox.StdOut.hOutput, g_Sandbox.StdOut.hBackup, g_Sandbox.StdOut.fIsConsole, dwType));
+
+    /* Standard error. */
+    g_Sandbox.StdErr.hOutput = pProcessParams->StandardError;
+    if (!DuplicateHandle(hCurProc, pProcessParams->StandardError, hCurProc, &g_Sandbox.StdErr.hBackup,
+                         GENERIC_WRITE, FALSE /*fInherit*/, DUPLICATE_SAME_ACCESS))
+        kHlpAssertFailedStmt(g_Sandbox.StdErr.hBackup = pProcessParams->StandardError);
+    dwType = GetFileType(g_Sandbox.StdErr.hOutput);
+    g_Sandbox.StdErr.fIsConsole = dwType == FILE_TYPE_CHAR;
+    g_Sandbox.StdErr.fFileType  = (dwType & ~FILE_TYPE_REMOTE) < 0xf
+                                ? (KU8)((dwType & ~FILE_TYPE_REMOTE) | (dwType >> 8)) : KU8_MAX;
+    g_Sandbox.HandleStdErr.enmType         = KWHANDLETYPE_OUTPUT_BUF;
+    g_Sandbox.HandleStdErr.cRefs           = 0x10001;
+    g_Sandbox.HandleStdErr.dwDesiredAccess = GENERIC_WRITE;
+    g_Sandbox.HandleStdErr.tidOwner        = KU32_MAX;
+    g_Sandbox.HandleStdErr.u.pOutBuf       = &g_Sandbox.StdErr;
+    g_Sandbox.HandleStdErr.hHandle         = g_Sandbox.StdErr.hOutput;
+    if (   g_Sandbox.StdErr.hOutput != INVALID_HANDLE_VALUE
+        && g_Sandbox.StdErr.hOutput != g_Sandbox.StdOut.hOutput)
+    {
+        if (kwSandboxHandleTableEnter(&g_Sandbox, &g_Sandbox.HandleStdErr, g_Sandbox.StdErr.hOutput))
+            g_Sandbox.cFixedHandles++;
+        else
+            return kwErrPrintfRc(3, "kwSandboxHandleTableEnter failed for StdErr (%p)!\n", g_Sandbox.StdErr.hOutput);
+    }
+    KWOUT_LOG(("StdErr: hOutput=%p (%p) fIsConsole=%d dwType=%#x\n",
+               g_Sandbox.StdErr.hOutput, g_Sandbox.StdErr.hBackup, g_Sandbox.StdErr.fIsConsole, dwType));
+
+    /* Combined console buffer. */
+    if (g_Sandbox.StdErr.fIsConsole)
+    {
+        g_Sandbox.Combined.hOutput   = g_Sandbox.StdErr.hBackup;
+        g_Sandbox.Combined.uCodepage = GetConsoleCP();
+    }
+    else if (g_Sandbox.StdOut.fIsConsole)
+    {
+        g_Sandbox.Combined.hOutput   = g_Sandbox.StdOut.hBackup;
+        g_Sandbox.Combined.uCodepage = GetConsoleCP();
+    }
+    else
+    {
+        g_Sandbox.Combined.hOutput   = INVALID_HANDLE_VALUE;
+        g_Sandbox.Combined.uCodepage = CP_ACP;
+    }
+    KWOUT_LOG(("Combined: hOutput=%p uCodepage=%d\n", g_Sandbox.Combined.hOutput, g_Sandbox.Combined.uCodepage));
+#endif /* WITH_CONSOLE_OUTPUT_BUFFERING */
+
+
+    /*
+     * Parse arguments.
+     */
+    for (i = 1; i < argc; i++)
+    {
+        if (strcmp(argv[i], "--pipe") == 0)
+        {
+            i++;
+            if (i < argc)
+            {
+                char *pszEnd = NULL;
+                unsigned __int64 u64Value = _strtoui64(argv[i], &pszEnd, 16);
+                if (   *argv[i]
+                    && pszEnd != NULL
+                    && *pszEnd == '\0'
+                    && u64Value != 0
+                    && u64Value != (uintptr_t)INVALID_HANDLE_VALUE
+                    && (uintptr_t)u64Value == u64Value)
+                    hPipe = (HANDLE)(uintptr_t)u64Value;
+                else
+                    return kwErrPrintfRc(2, "Invalid --pipe argument: %s\n", argv[i]);
+            }
+            else
+                return kwErrPrintfRc(2, "--pipe takes an argument!\n");
+        }
+        else if (strcmp(argv[i], "--volatile") == 0)
+        {
+            i++;
+            if (i < argc)
+                kFsCacheSetupCustomRevisionForTree(g_pFsCache, kFsCacheLookupA(g_pFsCache, argv[i], &enmIgnored));
+            else
+                return kwErrPrintfRc(2, "--volatile takes an argument!\n");
+        }
+        else if (strcmp(argv[i], "--test") == 0)
+            return kwTestRun(argc - i - 1, &argv[i + 1]);
+        else if (strcmp(argv[i], "--full-test") == 0)
+            return kwFullTestRun(argc - i - 1, &argv[i + 1]);
+        else if (strcmp(argv[i], "--priority") == 0)
+        {
+            i++;
+            if (i < argc)
+            {
+                char *pszEnd = NULL;
+                unsigned long uValue = strtoul(argv[i], &pszEnd, 16);
+                if (   *argv[i]
+                    && pszEnd != NULL
+                    && *pszEnd == '\0'
+                    && uValue >= 1
+                    && uValue <= 5)
+                {
+                    DWORD dwClass;
+                    int   dwPriority;
+                    switch (uValue)
+                    {
+                        case 1: dwClass = IDLE_PRIORITY_CLASS;         dwPriority = THREAD_PRIORITY_IDLE; break;
+                        case 2: dwClass = BELOW_NORMAL_PRIORITY_CLASS; dwPriority = THREAD_PRIORITY_BELOW_NORMAL; break;
+                        default:
+                        case 3: dwClass = NORMAL_PRIORITY_CLASS;       dwPriority = THREAD_PRIORITY_NORMAL; break;
+                        case 4: dwClass = HIGH_PRIORITY_CLASS;         dwPriority = INT_MAX; break;
+                        case 5: dwClass = REALTIME_PRIORITY_CLASS;     dwPriority = INT_MAX; break;
+                    }
+                    SetPriorityClass(GetCurrentProcess(), dwClass);
+                    if (dwPriority != INT_MAX)
+                        SetThreadPriority(GetCurrentThread(), dwPriority);
+                }
+                else
+                    return kwErrPrintfRc(2, "Invalid --priority argument: %s\n", argv[i]);
+            }
+            else
+                return kwErrPrintfRc(2, "--priority takes an argument!\n");
+        }
+        else if (strcmp(argv[i], "--group") == 0)
+        {
+            i++;
+            if (i < argc)
+            {
+                char *pszEnd = NULL;
+                unsigned long uValue = strtoul(argv[i], &pszEnd, 16);
+                if (   *argv[i]
+                    && pszEnd != NULL
+                    && *pszEnd == '\0'
+                    && uValue == (WORD)uValue)
+                    kwSetProcessorGroup(uValue);
+                else
+                    return kwErrPrintfRc(2, "Invalid --priority argument: %s\n", argv[i]);
+            }
+            else
+                return kwErrPrintfRc(2, "--priority takes an argument!\n");
+        }
+        else if (   strcmp(argv[i], "--verbose") == 0
+                 || strcmp(argv[i], "-v") == 0)
+            g_cVerbose++;
+        else if (   strcmp(argv[i], "--help") == 0
+                 || strcmp(argv[i], "-h") == 0
+                 || strcmp(argv[i], "-?") == 0)
+        {
+            printf("usage: kWorker [--volatile dir] [--priority <1-5>] [--group <processor-grp>\n"
+                   "usage: kWorker <--help|-h>\n"
+                   "usage: kWorker <--version|-V>\n"
+                   "usage: kWorker [--volatile dir] --full-test kSubmit ...\n"
+                   "usage: kWorker [--volatile dir] --test [<times> [--chdir <dir>] [--breakpoint] -- args\n"
+                   "\n"
+                   "This is an internal kmk program that is used via the builtin_kSubmit.\n");
+            return 0;
+        }
+        else if (   strcmp(argv[i], "--version") == 0
+                 || strcmp(argv[i], "-V") == 0)
+            return kbuild_version(argv[0]);
+        else
+            return kwErrPrintfRc(2, "Unknown argument '%s'\n", argv[i]);
+    }
+
+    /*
+     * If no --pipe argument, then assume its standard input.
+     * We need to carefully replace the CRT stdin with a handle to "nul".
+     */
+    if (hPipe == INVALID_HANDLE_VALUE)
+    {
+        hPipe = GetStdHandle(STD_INPUT_HANDLE);
+        if (GetFileType(hPipe) == FILE_TYPE_PIPE)
+        {
+            HANDLE hDuplicate = INVALID_HANDLE_VALUE;
+            if (DuplicateHandle(GetCurrentProcess(), hPipe, GetCurrentProcess(), &hDuplicate, 0, FALSE, DUPLICATE_SAME_ACCESS))
+            {
+                int fdNul = _wopen(L"nul", O_RDWR | O_BINARY);
+                if (fdNul >= 0)
+                {
+                    if (_dup2(fdNul, 0) >= 0)
+                    {
+                        close(fdNul);
+                        hPipe = hDuplicate;
+                    }
+                    else
+                        return kwErrPrintfRc(2, "DuplicateHandle pipe failed: %u\n", GetLastError());
+                }
+                else
+                    return kwErrPrintfRc(2, "DuplicateHandle pipe failed: %u\n", GetLastError());
+            }
+            else
+                return kwErrPrintfRc(2, "DuplicateHandle pipe failed: %u\n", GetLastError());
+        }
+        else
+            return kwErrPrintfRc(2, "No --pipe <pipe-handle> argument and standard input is not a valid pipe handle (%#x, %u)\n",
+                                 GetFileType(hPipe), GetLastError());
+    }
+    else if (GetFileType(hPipe) != FILE_TYPE_PIPE)
+        return kwErrPrintfRc(2, "The specified --pipe %p is not a pipe handle: type %#x (last err %u)!\n",
+                             GetFileType(hPipe), GetLastError());
+    g_hPipe = hPipe;
+
+    /*
+     * Serve the pipe.
+     */
+    for (;;)
+    {
+        KU32 cbMsg = 0;
+        int rc = kSubmitReadIt(hPipe, &cbMsg, sizeof(cbMsg), K_TRUE /*fShutdownOkay*/);
+        if (rc == 0)
+        {
+            /* Make sure the message length is within sane bounds.  */
+            if (   cbMsg > 4
+                && cbMsg <= 256*1024*1024)
+            {
+                /* Reallocate the message buffer if necessary.  We add 4 zero bytes.  */
+                if (cbMsg + 4 <= cbMsgBuf)
+                { /* likely */ }
+                else
+                {
+                    cbMsgBuf = K_ALIGN_Z(cbMsg + 4, 2048);
+                    pbMsgBuf = kHlpRealloc(pbMsgBuf, cbMsgBuf);
+                    if (!pbMsgBuf)
+                        return kwErrPrintfRc(1, "Failed to allocate %u bytes for a message buffer!\n", cbMsgBuf);
+                }
+
+                /* Read the whole message into the buffer, making sure there is are a 4 zero bytes following it. */
+                *(KU32 *)pbMsgBuf = cbMsg;
+                rc = kSubmitReadIt(hPipe, &pbMsgBuf[sizeof(cbMsg)], cbMsg - sizeof(cbMsg), K_FALSE /*fShutdownOkay*/);
+                if (rc == 0)
+                {
+                    const char *psz;
+
+                    pbMsgBuf[cbMsg]     = '\0';
+                    pbMsgBuf[cbMsg + 1] = '\0';
+                    pbMsgBuf[cbMsg + 2] = '\0';
+                    pbMsgBuf[cbMsg + 3] = '\0';
+
+                    /* The first string after the header is the command. */
+                    psz = (const char *)&pbMsgBuf[sizeof(cbMsg)];
+                    if (   strcmp(psz, "JOB") == 0
+                        && g_rcCtrlC == 0)
+                    {
+                        struct
+                        {
+                            KI32 rcExitCode;
+                            KU8  bExiting;
+                            KU8  abZero[3];
+                        } Reply;
+                        Reply.rcExitCode = kSubmitHandleJob(psz, cbMsg - sizeof(cbMsg));
+                        Reply.bExiting   = g_fRestart;
+                        Reply.abZero[0]  = 0;
+                        Reply.abZero[1]  = 0;
+                        Reply.abZero[2]  = 0;
+                        rc = kSubmitWriteIt(hPipe, &Reply, sizeof(Reply));
+                        if (   rc == 0
+                            && !g_fRestart)
+                        {
+                            kwSandboxCleanupLate(&g_Sandbox);
+                            if (g_rcCtrlC == 0)
+                                continue;
+                        }
+                    }
+                    else
+                        rc = kwErrPrintfRc(-1, "Unknown command: '%s'\n", psz);
+                }
+            }
+            else
+                rc = kwErrPrintfRc(-1, "Bogus message length: %u (%#x)\n", cbMsg, cbMsg);
+        }
+
+        /*
+         * If we're exitting because we're restarting, we need to delay till
+         * kmk/kSubmit has read the result.  Windows documentation says it
+         * immediately discards pipe buffers once the pipe is broken by the
+         * server (us).  So, We flush the buffer and queues a 1 byte read
+         * waiting for kSubmit to close the pipe when it receives the
+         * bExiting = K_TRUE result.
+         */
+        if (g_fRestart)
+        {
+            DWORD cbIgnored = 1;
+            KU8 b;
+            FlushFileBuffers(hPipe);
+            ReadFile(hPipe, &b, 1, &cbIgnored, NULL);
+        }
+
+        CloseHandle(hPipe);
+#ifdef WITH_LOG_FILE
+        if (g_hLogFile != INVALID_HANDLE_VALUE && g_hLogFile != NULL)
+            CloseHandle(g_hLogFile);
+#endif
+        if (getenv("KWORKER_STATS") != NULL)
+            kwPrintStats();
+        return g_rcCtrlC != 0 ? g_rcCtrlC : rc > 0 ? 0 : 1;
+    }
+}
+
+
+/** @page pg_kWorker    kSubmit / kWorker
+ *
+ * @section sec_kWorker_Motivation  Motivation / Inspiration
+ *
+ * The kSubmit / kWorker combo was conceived as a way to speed up VirtualBox
+ * builds on machines "infested" by Anti Virus protection and disk encryption
+ * software.  Build times jumping from 35-40 min to 77-82 min after the machine
+ * got "infected".
+ *
+ * Speeing up builting of Boot Sector Kit \#3 was also hightly desirable. It is
+ * mainly a bunch of tiny assembly and C files being compiler a million times.
+ * As some of us OS/2 users maybe recalls, the Watcom make program can run its
+ * own toolchain from within the same process, saving a lot of process creation
+ * and teardown overhead.
+ *
+ *
+ * @section sec_kWorker_kSubmit     About kSubmit
+ *
+ * When wanting to execute a job in a kWorker instance, it must be submitted
+ * using the kmk_builtin_kSubmit command in kmk.  As the name suggest, this is
+ * built into kmk and does not exist as an external program.  The reason for
+ * this is that it keep track of the kWorker instances.
+ *
+ * The kSubmit command has the --32-bit and --64-bit options for selecting
+ * between 32-bit and 64-bit worker instance.  We generally assume the user of
+ * the command knows which bit count the executable has, so kSubmit is spared
+ * the extra work of finding out.
+ *
+ * The kSubmit command shares a environment and current directory manipulation
+ * with the kRedirect command, but not the file redirection.  So long no file
+ * operation is involed, kSubmit is a drop in kRedirect replacement.  This is
+ * hand for tools like OpenWatcom, NASM and YASM which all require environment
+ * and/or current directory changes to work.
+ *
+ * Unlike the kRedirect command, the kSubmit command can also specify an
+ * internall post command to be executed after the main command succeeds.
+ * Currently only kmk_builtin_kDepObj is supported.  kDepObj gathers dependency
+ * information from Microsoft COFF object files and Watcom OMF object files and
+ * is scheduled to replace kDepIDB.
+ *
+ *
+ * @section sec_kWorker_Interaction kSubmit / kWorker interaction
+ *
+ * The kmk_builtin_kSubmit communicates with the kWorker instances over pipes.
+ * A job request is written by kSubmit and kWorker read, unpacks it and executes
+ * it.  When the job is completed, kWorker writes a short reply with the exit
+ * code and an internal status indicating whether it is going to restart.
+ *
+ * The kWorker intance will reply to kSubmit before completing all the internal
+ * cleanup work, so as not to delay the next job execution unnecessarily.  This
+ * includes checking its own memory consumption and checking whether it needs
+ * restarting.  So, a decision to restart unfortunately have to wait till after
+ * the next job has completed.  This is a little bit unfortunate if the next job
+ * requires a lot of memory and kWorker has already leaked/used a lot.
+ *
+ *
+ * @section sec_kWorker_How_Works   How kWorker Works
+ *
+ * kWorker will load the executable specified by kSubmit into memory and call
+ * it's entrypoint in a lightly sandbox'ed environment.
+ *
+ *
+ * @subsection ssec_kWorker_Loaing      Image loading
+ *
+ * kWorker will manually load all the executable images into memory, fix them
+ * up, and make a copy of the virgin image so it can be restored using memcpy
+ * the next time it is used.
+ *
+ * Imported functions are monitored and replacements used for a few of them.
+ * These replacements are serve the following purposes:
+ *      - Provide a different command line.
+ *      - Provide a different environment.
+ *      - Intercept process termination.
+ *      - Intercept thread creation (only linker is allowed to create threads).
+ *      - Intercept file reading for caching (header files, ++) as file system
+ *        access is made even slower by anti-virus software.
+ *      - Intercept crypto hash APIs to cache MD5 digests of header files
+ *        (c1.dll / c1xx.dll spends a noticable bit of time doing MD5).
+ *      - Intercept temporary files (%TEMP%/_CL_XXXXXXyy) to keep the entirely
+ *        in memory as writing files grows expensive with encryption and
+ *        anti-virus software active.
+ *      - Intercept some file system queries to use the kFsCache instead of
+ *        going to the kernel and slowly worm thru the AV filter driver.
+ *      - Intercept standard output/error and console writes to aggressivly
+ *        buffer the output.  The MS CRT does not buffer either when it goes to
+ *        the console, resulting in terrible performance and mixing up output
+ *        with other compile jobs.
+ *        This also allows us to filter out the annoying source file announcements
+ *        by cl.exe.
+ *      - Intercept VirtualAlloc and VirtualFree to prevent
+ *        CL.EXE/C1.DLL/C1XX.DLL from leaking some 72MB internal allocat area.
+ *      - Intercept FlsAlloc/FlsFree to make sure the allocations are freed and
+ *        the callbacks run after each job.
+ *      - Intercept HeapCreate/HeapFree to reduce leaks from statically linked
+ *        executables and tools using custom heaps (like the microsoft linker).
+ *        [exectuable images only]
+ *      - Intercept atexit and _onexit registration to be able run them after
+ *        each job instead of crashing as kWorker exits.  This also helps avoid
+ *        some leaks. [executable image only]
+ *
+ * DLLs falls into two categories, system DLLs which we always load using the
+ * native loader, and tool DLLs which can be handled like the executable or
+ * optionally using the native loader.  We maintain a hardcoded white listing of
+ * tool DLLs we trust to load using the native loader.
+ *
+ * Imports of natively loaded DLLs are processed too, but we only replace a
+ * subset of the functions compared to natively loaded excutable and DLL images.
+ *
+ * DLLs are never unloaded and we cache LoadLibrary requests (hash the input).
+ * This is to speed up job execution.
+ *
+ * It was thought that we needed to restore (memcpy) natively loaded tool DLLs
+ * for each job run, but so far this hasn't been necessary.
+ *
+ *
+ * @subsection ssec_kWorker_Optimizing  Optimizing the Compiler
+ *
+ * The Visual Studio 2010 C/C++ compiler does a poor job at processing header
+ * files and uses a whole bunch of temporary files (in %TEMP%) for passing
+ * intermediate representation between the first (c1/c1xx.dll) and second pass
+ * (c2.dll).
+ *
+ * kWorker helps the compiler as best as it can.  Given a little knowledge about
+ * stable and volatile file system areas, it can do a lot of caching that a
+ * normal compiler driver cannot easily do when given a single file.
+ *
+ *
+ * @subsubsection sssec_kWorker_Headers     Cache Headers Files and Searches
+ *
+ * The preprocessor part will open and process header files exactly as they are
+ * encountered in the source files.  If string.h is included by the main source
+ * and five other header files, it will be searched for (include path), opened,
+ * read, MD5-summed, and pre-processed six times.  The last five times is just a
+ * waste of time because of the guards or \#pragma once.  A smart compiler would
+ * make a little extra effort and realize this.
+ *
+ * kWorker will cache help the preprocessor by remembering places where the
+ * header was not found with help of kFsCache, and cache the file in memory when
+ * found.  The first part is taken care of by intercepting GetFileAttributesW,
+ * and the latter by intercepting CreateFileW, ReadFile and CloseFile.  Once
+ * cached, the file is kept open and the CreateFileW call returns a duplicate of
+ * that handle.  An internal handle table is used by ReadFile and CloseFile to
+ * keep track of intercepted handles (also used for temporary file, temporary
+ * file mappings, console buffering, and standard out/err buffering).
+ *
+ * PS. The header search optimization also comes in handy when cl.exe goes on
+ *     thru the whole PATH looking for c1/c1xx.exe and c2.exe after finding
+ *     c1/c1xx.dll and c2.dll.  My guess is that the compiler team can
+ *     optionally compile the three pass DLLs as executables during development
+ *     and problem analysis.
+ *
+ *
+ * @subsubsection sssec_kWorker_Temp_Files  Temporary Files In Memory
+ *
+ * The issues of the temporary files is pretty severe on the Dell machine used
+ * for benchmarking with full AV and encryption.  The synthetic benchmark
+ * improved by 30% when kWorker implemented measures to keep them entirely in
+ * memory.
+ *
+ * kWorker implement these by recognizing the filename pattern in CreateFileW
+ * and creating/opening the given file as needed.  The handle returned is a
+ * duplicate of the current process, thus giving us a good chance of catching
+ * API calls we're not intercepting.
+ *
+ * In addition to CreateFileW, we also need to intercept GetFileType, ReadFile,
+ * WriteFile, SetFilePointer+Ex, SetEndOfFile, and CloseFile.  The 2nd pass
+ * additionally requires GetFileSize+Ex, CreateFileMappingW, MapViewOfFile and
+ * UnmapViewOfFile.
+ *
+ *
+ * @section sec_kWorker_Numbers     Some measurements.
+ *
+ *  - r2881 building src/VBox/Runtime:
+ *     - without: 2m01.016388s = 120.016388 s
+ *     - with:    1m15.165069s = 75.165069 s => 120.016388s - 75.165069s = 44.851319s => 44.85/120.02 = 37% speed up.
+ *  - r2884 building vbox/debug (r110512):
+ *     - without: 11m14.446609s = 674.446609 s
+ *     - with:     9m01.017344s = 541.017344 s => 674.446609s - 541.017344s = 133.429265 => 133.43/674.45 = 19% speed up
+ *  - r2896 building vbox/debug (r110577):
+ *     - with:     8m31.182384s = 511.182384 s => 674.446609s - 511.182384s = 163.264225 = 163.26/674.45 = 24% speed up
+ *  - r2920 building vbox/debug (r110702) on Skylake (W10/amd64, only standard
+ *     MS Defender as AV):
+ *     - without: 10m24.990389s = 624.990389s
+ *     - with:    08m04.738184s = 484.738184s
+ *          - delta: 624.99s - 484.74s = 140.25s
+ *          - saved: 140.25/624.99 = 22% faster
+ *
+ *
+ * @subsection subsec_kWorker_Early_Numbers     Early Experiments
+ *
+ * These are some early experiments doing 1024 compilations of
+ * VBoxBS2Linker.cpp using a hard coded command line and looping in kWorker's
+ * main function:
+ *
+ * Skylake (W10/amd64, only stdandard MS defender):
+ *  - cmd 1:  48    /1024 = 0x0 (0.046875)        [for /l %i in (1,1,1024) do ...]
+ *  - kmk 1:  44    /1024 = 0x0 (0.04296875)      [all: ; 1024 x cl.exe]
+ *  - run 1:  37    /1024 = 0x0 (0.0361328125)    [just process creation gain]
+ *  - run 2:  34    /1024 = 0x0 (0.033203125)     [get file attribs]
+ *  - run 3:  32.77 /1024 = 0x0 (0.032001953125)  [read caching of headers]
+ *  - run 4:  32.67 /1024 = 0x0 (0.031904296875)  [loader tweaking]
+ *  - run 5:  29.144/1024 = 0x0 (0.0284609375)    [with temp files in memory]
+ *
+ * Dell (W7/amd64, infected by mcafee):
+ *  - kmk 1: 285.278/1024 = 0x0 (0.278591796875)
+ *  - run 1: 134.503/1024 = 0x0 (0.1313505859375) [w/o temp files in memory]
+ *  - run 2:  78.161/1024 = 0x0 (0.0763291015625) [with temp files in memory]
+ *
+ * The command line:
+ * @code{.cpp}
+   "\"E:/vbox/svn/trunk/tools/win.x86/vcc/v10sp1/bin/amd64/cl.exe\" -c -c -TP -nologo -Zi -Zi -Zl -GR- -EHsc -GF -Zc:wchar_t- -Oy- -MT -W4 -Wall -wd4065 -wd4996 -wd4127 -wd4706 -wd4201 -wd4214 -wd4510 -wd4512 -wd4610 -wd4514 -wd4820 -wd4365 -wd4987 -wd4710 -wd4061 -wd4986 -wd4191 -wd4574 -wd4917 -wd4711 -wd4611 -wd4571 -wd4324 -wd4505 -wd4263 -wd4264 -wd4738 -wd4242 -wd4244 -WX -RTCsu -IE:/vbox/svn/trunk/tools/win.x86/vcc/v10sp1/include -IE:/vbox/svn/trunk/tools/win.x86/vcc/v10sp1/atlmfc/include -IE:/vbox/svn/trunk/tools/win.x86/sdk/v7.1/Include -IE:/vbox/svn/trunk/include -IE:/vbox/svn/trunk/out/win.amd64/debug -IE:/vbox/svn/trunk/tools/win.x86/vcc/v10sp1/include -IE:/vbox/svn/trunk/tools/win.x86/vcc/v10sp1/atlmfc/include -DVBOX -DVBOX_WITH_64_BITS_GUESTS -DVBOX_WITH_REM -DVBOX_WITH_RAW_MODE -DDEBUG -DDEBUG_bird -DDEBUG_USERNAME=bird -DRT_OS_WINDOWS -D__WIN__ -DRT_ARCH_AMD64 -D__AMD64__ -D__WIN64__ -DVBOX_WITH_DEBUGGER -DRT_LOCK_STRICT -DRT_LOCK_STRICT_ORDER -DIN_RING3 -DLOG_DISABLED -DIN_BLD_PROG -D_CRT_SECURE_NO_DEPRECATE -FdE:/vbox/svn/trunk/out/win.amd64/debug/obj/VBoxBs2Linker/VBoxBs2Linker-obj.pdb -FD -FoE:/vbox/svn/trunk/out/win.amd64/debug/obj/VBoxBs2Linker/VBoxBs2Linker.obj E:\\vbox\\svn\\trunk\\src\\VBox\\ValidationKit\\bootsectors\\VBoxBs2Linker.cpp"
+ * @endcode
+ */
+
diff --git a/src/kWorker/kWorkerTlsXxxK.c b/src/kWorker/kWorkerTlsXxxK.c
new file mode 100644
index 0000000..829a66e
--- /dev/null
+++ b/src/kWorker/kWorkerTlsXxxK.c
@@ -0,0 +1,138 @@
+/* $Id: kWorkerTlsXxxK.c 3366 2020-06-09 23:53:39Z bird $ */
+/** @file
+ * kWorkerTlsXxxK - Loader TLS allocation hack DLL.
+ */
+
+/*
+ * Copyright (c) 2017 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <windows.h>
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef void KWLDRTLSCALLBACK(void *hDll, DWORD dwReason, void *pvContext, void *pvWorkerModule);
+typedef KWLDRTLSCALLBACK *PKWLDRTLSCALLBACK;
+typedef PKWLDRTLSCALLBACK KWLDRTLSALLOCATIONHOOK(void *hDll, ULONG idxTls, char *pabInitData, void **ppvWorkerModule);
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+__declspec(dllexport) void __stdcall DummyTlsCallback(void *hDll, DWORD dwReason, void *pvContext);
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** The TLS pointer array. The 2nd entry is NULL and serve to terminate the array.
+ * The first entry can be used by kWorker if it needs to. */
+__declspec(dllexport) PIMAGE_TLS_CALLBACK   g_apfnTlsCallbacks[2]   = { DummyTlsCallback, NULL };
+
+/**
+ * The TLS index.
+ */
+__declspec(dllexport) ULONG                 g_idxTls                = ~(ULONG)0;
+
+/**
+ * Callback context.
+ */
+__declspec(dllexport) void                 *g_pvWorkerModule        = NULL;
+
+/**
+ * Regular callback method (returned by kwLdrTlsAllocationHook).
+ */
+__declspec(dllexport) PKWLDRTLSCALLBACK     g_pfnWorkerCallback     = NULL;
+
+
+
+/**
+ * Initialization data.
+ * kWorker will copy the init data of the target DLL here.
+ */
+static char g_abInitData[TLS_SIZE] = {0};
+
+/**
+ * The TLS directory entry.  Not possible to get more than one from the linker
+ * and probably also the loader doesn't want more than one anyway.
+ */
+#pragma section(".rdata$T", long, read)
+__declspec(allocate(".rdata$T")) const IMAGE_TLS_DIRECTORY _tls_used =
+{
+    (ULONG_PTR)&g_abInitData,
+    (ULONG_PTR)&g_abInitData + sizeof(g_abInitData),
+    (ULONG_PTR)&g_idxTls,
+    (ULONG_PTR)&g_apfnTlsCallbacks,
+    0, /* This SizeOfZeroFill bugger doesn't work on w10/amd64 from what I can tell! */
+    IMAGE_SCN_ALIGN_32BYTES
+};
+
+
+/**
+ * Just a dummy callback function in case the allocation hook gambit fails below
+ * (see KWLDRTLSCALLBACK).
+ */
+static void DummyWorkerCallback(void *hDll, DWORD dwReason, void *pvContext, void *pvWorkerModule)
+{
+    (void)hDll; (void)dwReason; (void)pvContext; (void)pvWorkerModule;
+}
+
+
+/*
+ * This is just a dummy TLS callback function.
+ * We'll be replacing g_apfnTlsCallbacks[0] from kWorker.c after loading it.
+ *
+ * Note! W10 doesn't seem to want to process the TLS directory if the DLL
+ *       doesn't have any imports (to snap).
+ */
+__declspec(dllexport) void __stdcall DummyTlsCallback(void *hDll, DWORD dwReason, void *pvContext)
+{
+    if (g_pfnWorkerCallback)
+        g_pfnWorkerCallback(hDll, dwReason, pvContext, g_pvWorkerModule);
+    else
+    {
+        g_pfnWorkerCallback = DummyWorkerCallback;
+        if (dwReason == DLL_PROCESS_ATTACH)
+        {
+            HMODULE hModExe = GetModuleHandleW(NULL);
+            KWLDRTLSALLOCATIONHOOK *pfnHook = (KWLDRTLSALLOCATIONHOOK *)GetProcAddress(hModExe, "kwLdrTlsAllocationHook");
+            if (pfnHook)
+                g_pfnWorkerCallback = pfnHook(hDll, g_idxTls, g_abInitData, &g_pvWorkerModule);
+            else
+                __debugbreak();
+        }
+    }
+}
+
+
+/*
+ * Dummy DLL entry point to avoid dragging in unnecessary CRT stuff. kWorkerTls1K!_tls_index
+ */
+BOOL __stdcall DummyDllEntry(void *hDll, DWORD dwReason, void *pvContext)
+{
+    (void)hDll; (void)dwReason; (void)pvContext;
+    return TRUE;
+}
+
diff --git a/src/kash/Makefile.kmk b/src/kash/Makefile.kmk
new file mode 100644
index 0000000..f0e6e66
--- /dev/null
+++ b/src/kash/Makefile.kmk
@@ -0,0 +1,272 @@
+# $Id: Makefile.kmk 3477 2020-09-17 21:52:16Z bird $
+## @file
+# Sub-makefile for kash.
+#
+
+#
+# Copyright (c) 2005-2020 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ../..
+include $(KBUILD_PATH)/subheader.kmk
+
+KASH_WIN_FORKED_MODE =
+
+#
+# The program.
+#
+PROGRAMS += kash
+kash_TEMPLATE = BIN-THREADED
+kash_NAME = kmk_ash
+kash_ASTOOL = YASM
+kash_DEFS = lint SHELL SMALL KASH_SEPARATE_PARSER_ALLOCATOR
+if "$(KBUILD_TARGET)" != "win" || defined(KASH_WIN_FORKED_MODE)
+kash_DEFS += SH_FORKED_MODE
+else
+kash_DEFS += KASH_SEPARATE_PARSER_ALLOCATOR KASH_ASYNC_CLOSE_HANDLE
+endif
+kash_DEFS.debug = DEBUG=2 K_STRICT
+kash_DEFS.haiku = BSD
+kash_DEFS.linux = BSD
+kash_DEFS.solaris = BSD
+## @todo bring over PC_SLASHES?
+kash_DEFS.win = \
+	BSD YY_NO_UNISTD_H \
+	SH_DEAL_WITH_CRLF PC_PATH_SEP PC_DRIVE_LETTERS PC_EXE_EXTS EXEC_HASH_BANG_SCRIPT \
+	KASH_USE_FORKSHELL2
+kash_DEFS.os2 = \
+	HAVE_SYS_SIGNAME HAVE_SYSCTL_H HAVE_SETPROGNAME PC_OS2_LIBPATHS \
+	SH_DEAL_WITH_CRLF PC_PATH_SEP PC_DRIVE_LETTERS PC_EXE_EXTS EXEC_HASH_BANG_SCRIPT
+kash_DEFS.darwin = \
+	HAVE_SYS_SIGNAME HAVE_SYSCTL_H HAVE_SETPROGNAME
+kash_DEFS.dragonfly = \
+	HAVE_SYS_SIGNAME HAVE_SYSCTL_H HAVE_SETPROGNAME
+kash_DEFS.freebsd = \
+	HAVE_SYS_SIGNAME HAVE_SYSCTL_H HAVE_SETPROGNAME
+kash_DEFS.gnukfbsd = HAVE_SYSCTL_H
+kash_DEFS.netbsd = \
+	HAVE_SYS_SIGNAME HAVE_SYSCTL_H HAVE_SETPROGNAME
+kash_DEFS.openbsd = \
+	HAVE_SYS_SIGNAME HAVE_SYSCTL_H HAVE_SETPROGNAME
+kash_INCS = $(kash_0_OUTDIR) . # (the last is because of error.h)
+kash_ASFLAGS.win = -g cv8
+kash_ASFLAGS.win.x86   = -f win32
+kash_ASFLAGS.win.amd64 = -f win64
+if "$(USER)" == "bird" && "$(KBUILD_TARGET)" != "win"
+kash_CFLAGS += -std=gnu99
+endif
+kash_CFLAGS.win.amd64 = -GS-
+ifdef KASH_WIN_FORKED_MODE
+kash_LDFLAGS.win = -DYNAMICBASE:NO
+endif
+kash_SOURCES = \
+	main.c \
+	alias.c \
+	cd.c \
+	error.c \
+	eval.c \
+	exec.c \
+	expand.c \
+	histedit.c \
+	input.c \
+	jobs.c \
+	mail.c \
+	memalloc.c \
+	mystring.c \
+	options.c \
+	output.c \
+	parser.c \
+	redir.c \
+	show.c \
+	syntax.c \
+	trap.c \
+	var.c \
+	miscbltin.c \
+	bltin/echo.c \
+	bltin/kill.c \
+	bltin/test.c \
+	\
+	$(kash_0_OUTDIR)/builtins.c \
+	$(kash_0_OUTDIR)/init.c \
+	$(kash_0_OUTDIR)/nodes.c \
+	\
+	setmode.c \
+	shinstance.c \
+	shheap.c \
+	shthread.c \
+	shfile.c
+kash_SOURCES.gnuhurd = \
+	$(kash_0_OUTDIR)/sys_signame.c \
+	strlcpy.c
+kash_SOURCES.gnukfbsd = \
+	$(kash_0_OUTDIR)/sys_signame.c \
+	strlcpy.c
+kash_SOURCES.gnuknbsd = \
+	$(kash_0_OUTDIR)/sys_signame.c \
+	strlcpy.c
+kash_SOURCES.haiku = \
+	$(kash_0_OUTDIR)/sys_signame.c \
+	strlcpy.c
+kash_SOURCES.linux = \
+	$(kash_0_OUTDIR)/sys_signame.c \
+	strlcpy.c
+kash_SOURCES.solaris = \
+	$(kash_0_OUTDIR)/sys_signame.c \
+	strlcpy.c
+kash_SOURCES.win = \
+	$(kash_0_OUTDIR)/sys_signame.c \
+	strsignal.c \
+	strlcpy.c \
+       ../lib/nt/ntstat.c \
+       ../lib/nt/nthlpcore.c \
+       ../lib/nt/nthlpfs.c \
+       ../lib/nt/nt_child_inject_standard_handles.c
+ifdef KASH_WIN_FORKED_MODE
+kash_SOURCES.win += \
+	shfork-win.c \
+	shforkA-win.asm
+endif
+
+kash_INTERMEDIATES = \
+	$(kash_0_OUTDIR)/builtins.h \
+	$(kash_0_OUTDIR)/nodes.h \
+	$(kash_0_OUTDIR)/token.h
+kash_CLEAN = \
+	$(kash_INTERMEDIATES) \
+	$(kash_0_OUTDIR)/builtins.c \
+	$(kash_0_OUTDIR)/init.c \
+	$(kash_0_OUTDIR)/nodes.c
+
+kash_main.c_DEFS = KBUILD_SVN_REV=$(KBUILD_SVN_REV)
+
+##
+## The manual page.
+##
+#INSTALLS += kash.man
+#kash.man_TEMPLATE = usr.bin.man
+#kash.man_SOURCES = sh.1=>kash.1
+
+
+#
+# The signal name list:
+#
+$$(kash_0_OUTDIR)/sys_signame.c: $$(bld_signames_1_TARGET) | $$(dir $$@)
+	$< $@
+
+BLDPROGS += bld_signames
+bld_signames_TEMPLATE := BLD
+bld_signames_DEFS     := SHELL SMALL
+bld_signames_SOURCES  := bld_signames.c
+
+
+if1of ($(KBUILD_TARGET), win os2)
+ KASH_USE_PREGENERATED_CODE = 1
+endif
+
+ifdef KASH_USE_PREGENERATED_CODE
+
+#
+# Use the pregenerated code.
+#
+kash_SOURCES += \
+	$(kash_0_OUTDIR)/arith.c \
+	$(kash_0_OUTDIR)/arith_lex.c
+kash_INTERMEDIATES += \
+	$(kash_0_OUTDIR)/arith.h
+
+define def_copy_generated
+$$$$(kash_0_OUTDIR)/$(src): $(PATH_SUB_CURRENT)/generated/$(src)
+	$$(RM) -f $$@
+	$$(CP) -f $$^ $$@
+endef
+
+$(foreach src, arith.h arith.c arith_lex.c builtins.h builtins.c nodes.h nodes.c token.h init.c,\
+$(eval $(def_copy_generated)))
+
+else # !KASH_USE_PREGENERATED_CODE
+
+#
+# Generate the code on the fly.
+#
+
+USES += lex yacc
+kash_USES = lex yacc
+kash_LEXTOOL = FLEX
+kash_LEXFLAGS = -8
+#kash_YACCTOOL = BISON
+kash_YACCTOOL = YACC
+kash_YACCFLAGS = -ld
+kash_SOURCES += \
+	arith.y \
+	arith_lex.l
+
+#
+# ATTENTION! ATTENTION! ATTENTION!
+#
+# Older ash versions has trouble with some of these scripts, great.
+# Kudos to the NetBSD guys for this clever move. ;)
+#
+# So, when building for the frist time, setting BOOSTRAP_SHELL=/bin/bash is good idea.
+#
+BOOTSTRAP_SHELL ?= $(SHELL)
+
+$$(kash_0_OUTDIR)/builtins.h + $$(kash_0_OUTDIR)/builtins.c: \
+		$$(kash_DEFPATH)/mkbuiltins \
+		$$(kash_DEFPATH)/shell.h \
+		$$(kash_DEFPATH)/builtins.def \
+		| $$(dir $$@)
+	$(BOOTSTRAP_SHELL) $+ $(dir $@)
+	[ -f $(kash_0_OUTDIR)/builtins.h ]
+
+$$(kash_0_OUTDIR)/nodes.h + $$(kash_0_OUTDIR)/nodes.c: \
+	$$(kash_DEFPATH)/mknodes.sh \
+	$$(kash_DEFPATH)/nodetypes \
+	$$(kash_DEFPATH)/nodes.c.pat \
+	| $$(dir $$@)
+	$(BOOTSTRAP_SHELL) $+ $(dir $@)
+	[ -f $(dir $@)/nodes.h ]
+
+$$(kash_0_OUTDIR)/token.h: $$(kash_DEFPATH)/mktokens | $$(dir $$@)
+	$(BOOTSTRAP_SHELL) $+
+	$(MV) token.h $@
+
+$$(kash_0_OUTDIR)/init.c: \
+		$$(kash_DEFPATH)/mkinit.sh \
+		$$(abspathex $$(filter-out $$(kash_0_OUTDIR)/%,$$(kash_SOURCES)), $$(kash_DEFPATH)) \
+		| $$(dir $$@)
+	$(BOOTSTRAP_SHELL) $+
+	$(MV) init.c $@
+
+endif # !KASH_USE_PREGENERATED_CODE
+
+#
+# For debugging file handle inheritance on Windows.
+#
+if "$(KBUILD_TARGET)" == win && 0
+PROGRAMS += tstDump
+tstDump_TEMPLATE = BIN
+tstDump_SOURCES = tstDump.c
+endif
+
+# Include the sub-makefile.
+include $(PATH_SUB_CURRENT)/tests/Makefile.kmk
+
+include $(FILE_KBUILD_SUB_FOOTER)
+
+
diff --git a/src/kash/TOUR b/src/kash/TOUR
new file mode 100644
index 0000000..f5c00c4
--- /dev/null
+++ b/src/kash/TOUR
@@ -0,0 +1,357 @@
+#	$NetBSD: TOUR,v 1.8 1996/10/16 14:24:56 christos Exp $
+#	@(#)TOUR	8.1 (Berkeley) 5/31/93
+
+NOTE -- This is the original TOUR paper distributed with ash and
+does not represent the current state of the shell.  It is provided anyway
+since it provides helpful information for how the shell is structured,
+but be warned that things have changed -- the current shell is
+still under development.
+
+================================================================
+
+                       A Tour through Ash
+
+               Copyright 1989 by Kenneth Almquist.
+
+
+DIRECTORIES:  The subdirectory bltin contains commands which can
+be compiled stand-alone.  The rest of the source is in the main
+ash directory.
+
+SOURCE CODE GENERATORS:  Files whose names begin with "mk" are
+programs that generate source code.  A complete list of these
+programs is:
+
+        program         intput files        generates
+        -------         ------------        ---------
+        mkbuiltins      builtins            builtins.h builtins.c
+        mkinit          *.c                 init.c
+        mknodes         nodetypes           nodes.h nodes.c
+        mksignames          -               signames.h signames.c
+        mksyntax            -               syntax.h syntax.c
+        mktokens            -               token.h
+        bltin/mkexpr    unary_op binary_op  operators.h operators.c
+
+There are undoubtedly too many of these.  Mkinit searches all the
+C source files for entries looking like:
+
+        INIT {
+              x = 1;    /* executed during initialization */
+        }
+
+        RESET {
+              x = 2;    /* executed when the shell does a longjmp
+                           back to the main command loop */
+        }
+
+        SHELLPROC {
+              x = 3;    /* executed when the shell runs a shell procedure */
+        }
+
+It pulls this code out into routines which are when particular
+events occur.  The intent is to improve modularity by isolating
+the information about which modules need to be explicitly
+initialized/reset within the modules themselves.
+
+Mkinit recognizes several constructs for placing declarations in
+the init.c file.
+        INCLUDE "file.h"
+includes a file.  The storage class MKINIT makes a declaration
+available in the init.c file, for example:
+        MKINIT int funcnest;    /* depth of function calls */
+MKINIT alone on a line introduces a structure or union declara-
+tion:
+        MKINIT
+        struct redirtab {
+              short renamed[10];
+        };
+Preprocessor #define statements are copied to init.c without any
+special action to request this.
+
+INDENTATION:  The ash source is indented in multiples of six
+spaces.  The only study that I have heard of on the subject con-
+cluded that the optimal amount to indent is in the range of four
+to six spaces.  I use six spaces since it is not too big a jump
+from the widely used eight spaces.  If you really hate six space
+indentation, use the adjind (source included) program to change
+it to something else.
+
+EXCEPTIONS:  Code for dealing with exceptions appears in
+exceptions.c.  The C language doesn't include exception handling,
+so I implement it using setjmp and longjmp.  The global variable
+exception contains the type of exception.  EXERROR is raised by
+calling error.  EXINT is an interrupt.  EXSHELLPROC is an excep-
+tion which is raised when a shell procedure is invoked.  The pur-
+pose of EXSHELLPROC is to perform the cleanup actions associated
+with other exceptions.  After these cleanup actions, the shell
+can interpret a shell procedure itself without exec'ing a new
+copy of the shell.
+
+INTERRUPTS:  In an interactive shell, an interrupt will cause an
+EXINT exception to return to the main command loop.  (Exception:
+EXINT is not raised if the user traps interrupts using the trap
+command.)  The INTOFF and INTON macros (defined in exception.h)
+provide uninterruptable critical sections.  Between the execution
+of INTOFF and the execution of INTON, interrupt signals will be
+held for later delivery.  INTOFF and INTON can be nested.
+
+MEMALLOC.C:  Memalloc.c defines versions of malloc and realloc
+which call error when there is no memory left.  It also defines a
+stack oriented memory allocation scheme.  Allocating off a stack
+is probably more efficient than allocation using malloc, but the
+big advantage is that when an exception occurs all we have to do
+to free up the memory in use at the time of the exception is to
+restore the stack pointer.  The stack is implemented using a
+linked list of blocks.
+
+STPUTC:  If the stack were contiguous, it would be easy to store
+strings on the stack without knowing in advance how long the
+string was going to be:
+        p = stackptr;
+        *p++ = c;       /* repeated as many times as needed */
+        stackptr = p;
+The folloing three macros (defined in memalloc.h) perform these
+operations, but grow the stack if you run off the end:
+        STARTSTACKSTR(p);
+        STPUTC(c, p);   /* repeated as many times as needed */
+        grabstackstr(p);
+
+We now start a top-down look at the code:
+
+MAIN.C:  The main routine performs some initialization, executes
+the user's profile if necessary, and calls cmdloop.  Cmdloop is
+repeatedly parses and executes commands.
+
+OPTIONS.C:  This file contains the option processing code.  It is
+called from main to parse the shell arguments when the shell is
+invoked, and it also contains the set builtin.  The -i and -j op-
+tions (the latter turns on job control) require changes in signal
+handling.  The routines setjobctl (in jobs.c) and setinteractive
+(in trap.c) are called to handle changes to these options.
+
+PARSING:  The parser code is all in parser.c.  A recursive des-
+cent parser is used.  Syntax tables (generated by mksyntax) are
+used to classify characters during lexical analysis.  There are
+three tables:  one for normal use, one for use when inside single
+quotes, and one for use when inside double quotes.  The tables
+are machine dependent because they are indexed by character vari-
+ables and the range of a char varies from machine to machine.
+
+PARSE OUTPUT:  The output of the parser consists of a tree of
+nodes.  The various types of nodes are defined in the file node-
+types.
+
+Nodes of type NARG are used to represent both words and the con-
+tents of here documents.  An early version of ash kept the con-
+tents of here documents in temporary files, but keeping here do-
+cuments in memory typically results in significantly better per-
+formance.  It would have been nice to make it an option to use
+temporary files for here documents, for the benefit of small
+machines, but the code to keep track of when to delete the tem-
+porary files was complex and I never fixed all the bugs in it.
+(AT&T has been maintaining the Bourne shell for more than ten
+years, and to the best of my knowledge they still haven't gotten
+it to handle temporary files correctly in obscure cases.)
+
+The text field of a NARG structure points to the text of the
+word.  The text consists of ordinary characters and a number of
+special codes defined in parser.h.  The special codes are:
+
+        CTLVAR              Variable substitution
+        CTLENDVAR           End of variable substitution
+        CTLBACKQ            Command substitution
+        CTLBACKQ|CTLQUOTE   Command substitution inside double quotes
+        CTLESC              Escape next character
+
+A variable substitution contains the following elements:
+
+        CTLVAR type name '=' [ alternative-text CTLENDVAR ]
+
+The type field is a single character specifying the type of sub-
+stitution.  The possible types are:
+
+        VSNORMAL            $var
+        VSMINUS             ${var-text}
+        VSMINUS|VSNUL       ${var:-text}
+        VSPLUS              ${var+text}
+        VSPLUS|VSNUL        ${var:+text}
+        VSQUESTION          ${var?text}
+        VSQUESTION|VSNUL    ${var:?text}
+        VSASSIGN            ${var=text}
+        VSASSIGN|VSNUL      ${var=text}
+
+In addition, the type field will have the VSQUOTE flag set if the
+variable is enclosed in double quotes.  The name of the variable
+comes next, terminated by an equals sign.  If the type is not
+VSNORMAL, then the text field in the substitution follows, ter-
+minated by a CTLENDVAR byte.
+
+Commands in back quotes are parsed and stored in a linked list.
+The locations of these commands in the string are indicated by
+CTLBACKQ and CTLBACKQ+CTLQUOTE characters, depending upon whether
+the back quotes were enclosed in double quotes.
+
+The character CTLESC escapes the next character, so that in case
+any of the CTL characters mentioned above appear in the input,
+they can be passed through transparently.  CTLESC is also used to
+escape '*', '?', '[', and '!' characters which were quoted by the
+user and thus should not be used for file name generation.
+
+CTLESC characters have proved to be particularly tricky to get
+right.  In the case of here documents which are not subject to
+variable and command substitution, the parser doesn't insert any
+CTLESC characters to begin with (so the contents of the text
+field can be written without any processing).  Other here docu-
+ments, and words which are not subject to splitting and file name
+generation, have the CTLESC characters removed during the vari-
+able and command substitution phase.  Words which are subject
+splitting and file name generation have the CTLESC characters re-
+moved as part of the file name phase.
+
+EXECUTION:  Command execution is handled by the following files:
+        eval.c     The top level routines.
+        redir.c    Code to handle redirection of input and output.
+        jobs.c     Code to handle forking, waiting, and job control.
+        exec.c     Code to to path searches and the actual exec sys call.
+        expand.c   Code to evaluate arguments.
+        var.c      Maintains the variable symbol table.  Called from expand.c.
+
+EVAL.C:  Evaltree recursively executes a parse tree.  The exit
+status is returned in the global variable exitstatus.  The alter-
+native entry evalbackcmd is called to evaluate commands in back
+quotes.  It saves the result in memory if the command is a buil-
+tin; otherwise it forks off a child to execute the command and
+connects the standard output of the child to a pipe.
+
+JOBS.C:  To create a process, you call makejob to return a job
+structure, and then call forkshell (passing the job structure as
+an argument) to create the process.  Waitforjob waits for a job
+to complete.  These routines take care of process groups if job
+control is defined.
+
+REDIR.C:  Ash allows file descriptors to be redirected and then
+restored without forking off a child process.  This is accom-
+plished by duplicating the original file descriptors.  The redir-
+tab structure records where the file descriptors have be dupli-
+cated to.
+
+EXEC.C:  The routine find_command locates a command, and enters
+the command in the hash table if it is not already there.  The
+third argument specifies whether it is to print an error message
+if the command is not found.  (When a pipeline is set up,
+find_command is called for all the commands in the pipeline be-
+fore any forking is done, so to get the commands into the hash
+table of the parent process.  But to make command hashing as
+transparent as possible, we silently ignore errors at that point
+and only print error messages if the command cannot be found
+later.)
+
+The routine shellexec is the interface to the exec system call.
+
+EXPAND.C:  Arguments are processed in three passes.  The first
+(performed by the routine argstr) performs variable and command
+substitution.  The second (ifsbreakup) performs word splitting
+and the third (expandmeta) performs file name generation.  If the
+"/u" directory is simulated, then when "/u/username" is replaced
+by the user's home directory, the flag "didudir" is set.  This
+tells the cd command that it should print out the directory name,
+just as it would if the "/u" directory were implemented using
+symbolic links.
+
+VAR.C:  Variables are stored in a hash table.  Probably we should
+switch to extensible hashing.  The variable name is stored in the
+same string as the value (using the format "name=value") so that
+no string copying is needed to create the environment of a com-
+mand.  Variables which the shell references internally are preal-
+located so that the shell can reference the values of these vari-
+ables without doing a lookup.
+
+When a program is run, the code in eval.c sticks any environment
+variables which precede the command (as in "PATH=xxx command") in
+the variable table as the simplest way to strip duplicates, and
+then calls "environment" to get the value of the environment.
+There are two consequences of this.  First, if an assignment to
+PATH precedes the command, the value of PATH before the assign-
+ment must be remembered and passed to shellexec.  Second, if the
+program turns out to be a shell procedure, the strings from the
+environment variables which preceded the command must be pulled
+out of the table and replaced with strings obtained from malloc,
+since the former will automatically be freed when the stack (see
+the entry on memalloc.c) is emptied.
+
+BUILTIN COMMANDS:  The procedures for handling these are scat-
+tered throughout the code, depending on which location appears
+most appropriate.  They can be recognized because their names al-
+ways end in "cmd".  The mapping from names to procedures is
+specified in the file builtins, which is processed by the mkbuil-
+tins command.
+
+A builtin command is invoked with argc and argv set up like a
+normal program.  A builtin command is allowed to overwrite its
+arguments.  Builtin routines can call nextopt to do option pars-
+ing.  This is kind of like getopt, but you don't pass argc and
+argv to it.  Builtin routines can also call error.  This routine
+normally terminates the shell (or returns to the main command
+loop if the shell is interactive), but when called from a builtin
+command it causes the builtin command to terminate with an exit
+status of 2.
+
+The directory bltins contains commands which can be compiled in-
+dependently but can also be built into the shell for efficiency
+reasons.  The makefile in this directory compiles these programs
+in the normal fashion (so that they can be run regardless of
+whether the invoker is ash), but also creates a library named
+bltinlib.a which can be linked with ash.  The header file bltin.h
+takes care of most of the differences between the ash and the
+stand-alone environment.  The user should call the main routine
+"main", and #define main to be the name of the routine to use
+when the program is linked into ash.  This #define should appear
+before bltin.h is included; bltin.h will #undef main if the pro-
+gram is to be compiled stand-alone.
+
+CD.C:  This file defines the cd and pwd builtins.  The pwd com-
+mand runs /bin/pwd the first time it is invoked (unless the user
+has already done a cd to an absolute pathname), but then
+remembers the current directory and updates it when the cd com-
+mand is run, so subsequent pwd commands run very fast.  The main
+complication in the cd command is in the docd command, which
+resolves symbolic links into actual names and informs the user
+where the user ended up if he crossed a symbolic link.
+
+SIGNALS:  Trap.c implements the trap command.  The routine set-
+signal figures out what action should be taken when a signal is
+received and invokes the signal system call to set the signal ac-
+tion appropriately.  When a signal that a user has set a trap for
+is caught, the routine "onsig" sets a flag.  The routine dotrap
+is called at appropriate points to actually handle the signal.
+When an interrupt is caught and no trap has been set for that
+signal, the routine "onint" in error.c is called.
+
+OUTPUT:  Ash uses it's own output routines.  There are three out-
+put structures allocated.  "Output" represents the standard out-
+put, "errout" the standard error, and "memout" contains output
+which is to be stored in memory.  This last is used when a buil-
+tin command appears in backquotes, to allow its output to be col-
+lected without doing any I/O through the UNIX operating system.
+The variables out1 and out2 normally point to output and errout,
+respectively, but they are set to point to memout when appropri-
+ate inside backquotes.
+
+INPUT:  The basic input routine is pgetc, which reads from the
+current input file.  There is a stack of input files; the current
+input file is the top file on this stack.  The code allows the
+input to come from a string rather than a file.  (This is for the
+-c option and the "." and eval builtin commands.)  The global
+variable plinno is saved and restored when files are pushed and
+popped from the stack.  The parser routines store the number of
+the current line in this variable.
+
+DEBUGGING:  If DEBUG is defined in shell.h, then the shell will
+write debugging information to the file $HOME/trace.  Most of
+this is done using the TRACE macro, which takes a set of printf
+arguments inside two sets of parenthesis.  Example:
+"TRACE(("n=%d0, n))".  The double parenthesis are necessary be-
+cause the preprocessor can't handle functions with a variable
+number of arguments.  Defining DEBUG also causes the shell to
+generate a core dump if it is sent a quit signal.  The tracing
+code is in show.c.
diff --git a/src/kash/alias.c b/src/kash/alias.c
new file mode 100644
index 0000000..8a3b3a8
--- /dev/null
+++ b/src/kash/alias.c
@@ -0,0 +1,311 @@
+/*	$NetBSD: alias.c,v 1.12 2003/08/07 09:05:29 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)alias.c	8.3 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: alias.c,v 1.12 2003/08/07 09:05:29 agc Exp $");
+#endif /* not lint */
+#endif
+
+#include <stdlib.h>
+#include "shell.h"
+#include "input.h"
+#include "output.h"
+#include "error.h"
+#include "memalloc.h"
+#include "mystring.h"
+#include "alias.h"
+#include "options.h"	/* XXX for argptr (should remove?) */
+#include "var.h"
+#include "shinstance.h"
+
+/*#define ATABSIZE 39
+
+struct alias *atab[ATABSIZE];*/
+
+STATIC void setalias(shinstance *, char *, char *);
+STATIC int unalias(shinstance *, char *);
+STATIC struct alias **hashalias(shinstance *, char *);
+
+#ifndef SH_FORKED_MODE
+void
+subshellinitalias(shinstance *psh, shinstance *inherit)
+{
+    unsigned i;
+    unsigned left = inherit->aliases;
+    if (left == 0)
+	return;
+    for (i = 0; i < K_ELEMENTS(inherit->atab); i++)
+    {
+	struct alias const *asrc = inherit->atab[i];
+	if (asrc)
+	{
+	    struct alias **ppdst = &psh->atab[i];
+	    do
+	    {
+		if (*asrc->name)
+		{
+		    struct alias *dst = (struct alias *)ckmalloc(psh, sizeof(*dst));
+		    dst->name = savestr(psh, asrc->name);
+		    dst->val = savestr(psh, asrc->val);
+		    dst->flag = asrc->flag;
+		    *ppdst = dst;
+		    ppdst = &dst->next;
+		}
+		left--;
+		asrc = asrc->next;
+	    } while (asrc);
+	    *ppdst = NULL;
+	    if (left == 0)
+		break;
+	}
+    }
+}
+#endif /* !SH_FORKED_MODE */
+
+STATIC
+void
+setalias(shinstance *psh, char *name, char *val)
+{
+	struct alias *ap, **app;
+
+	app = hashalias(psh, name);
+	for (ap = *app; ap; ap = ap->next) {
+		if (equal(name, ap->name)) {
+			INTOFF;
+			ckfree(psh, ap->val);
+			ap->val	= savestr(psh, val);
+			INTON;
+			return;
+		}
+	}
+	/* not found */
+	INTOFF;
+	ap = ckmalloc(psh, sizeof (struct alias));
+	ap->name = savestr(psh, name);
+	/*
+	 * XXX - HACK: in order that the parser will not finish reading the
+	 * alias value off the input before processing the next alias, we
+	 * dummy up an extra space at the end of the alias.  This is a crock
+	 * and should be re-thought.  The idea (if you feel inclined to help)
+	 * is to avoid alias recursions.  The mechanism used is: when
+	 * expanding an alias, the value of the alias is pushed back on the
+	 * input as a string and a pointer to the alias is stored with the
+	 * string.  The alias is marked as being in use.  When the input
+	 * routine finishes reading the string, it markes the alias not
+	 * in use.  The problem is synchronization with the parser.  Since
+	 * it reads ahead, the alias is marked not in use before the
+	 * resulting token(s) is next checked for further alias sub.  The
+	 * H A C K is that we add a little fluff after the alias value
+	 * so that the string will not be exhausted.  This is a good
+	 * idea ------- ***NOT***
+	 */
+#ifdef notyet
+	ap->val = savestr(psh, val);
+#else /* hack */
+	{
+	size_t len = strlen(val);
+	ap->val = ckmalloc(psh, len + 2);
+	memcpy(ap->val, val, len);
+	ap->val[len] = ' ';	/* fluff */
+	ap->val[len+1] = '\0';
+	}
+#endif
+	ap->next = *app;
+	*app = ap;
+	psh->aliases++;
+	INTON;
+}
+
+STATIC int
+unalias(shinstance *psh, char *name)
+{
+	struct alias *ap, **app;
+
+	app = hashalias(psh, name);
+
+	for (ap = *app; ap; app = &(ap->next), ap = ap->next) {
+		if (equal(name, ap->name)) {
+			/*
+			 * if the alias is currently in use (i.e. its
+			 * buffer is being used by the input routine) we
+			 * just null out the name instead of freeing it.
+			 * We could clear it out later, but this situation
+			 * is so rare that it hardly seems worth it.
+			 */
+			if (ap->flag & ALIASINUSE)
+				*ap->name = '\0';
+			else {
+				INTOFF;
+				*app = ap->next;
+				ckfree(psh, ap->name);
+				ckfree(psh, ap->val);
+				ckfree(psh, ap);
+				psh->aliases--;
+				INTON;
+			}
+			return (0);
+		}
+	}
+
+	return (1);
+}
+
+#ifdef mkinit
+MKINIT void rmaliases(shinstance *psh);
+
+SHELLPROC {
+	rmaliases(psh);
+}
+#endif
+
+void
+rmaliases(shinstance *psh)
+{
+	struct alias *ap, *tmp;
+	int i;
+
+	INTOFF;
+	for (i = 0; i < ATABSIZE; i++) {
+		ap = psh->atab[i];
+		psh->atab[i] = NULL;
+		while (ap) {
+			ckfree(psh, ap->name);
+			ckfree(psh, ap->val);
+			tmp = ap;
+			ap = ap->next;
+			ckfree(psh, tmp);
+		}
+	}
+	INTON;
+}
+
+struct alias *
+lookupalias(shinstance *psh, char *name, int check)
+{
+	struct alias *ap = *hashalias(psh, name);
+
+	for (; ap; ap = ap->next) {
+		if (equal(name, ap->name)) {
+			if (check && (ap->flag & ALIASINUSE))
+				return (NULL);
+			return (ap);
+		}
+	}
+
+	return (NULL);
+}
+
+char *
+get_alias_text(shinstance *psh, char *name)
+{
+	struct alias *ap;
+
+	ap = lookupalias(psh, name, 0);
+	if (ap == NULL)
+		return NULL;
+	return ap->val;
+}
+
+/*
+ * TODO - sort output
+ */
+int
+aliascmd(shinstance *psh, int argc, char **argv)
+{
+	char *n, *v;
+	int ret = 0;
+	struct alias *ap;
+
+	if (argc == 1) {
+		int i;
+
+		for (i = 0; i < ATABSIZE; i++)
+			for (ap = psh->atab[i]; ap; ap = ap->next) {
+				if (*ap->name != '\0') {
+					out1fmt(psh, "alias %s=", ap->name);
+					print_quoted(psh, ap->val);
+					out1c(psh, '\n');
+				}
+			}
+		return (0);
+	}
+	while ((n = *++argv) != NULL) {
+		if ((v = strchr(n+1, '=')) == NULL) { /* n+1: funny ksh stuff */
+			if ((ap = lookupalias(psh, n, 0)) == NULL) {
+				outfmt(psh->out2, "alias: %s not found\n", n);
+				ret = 1;
+			} else {
+				out1fmt(psh, "alias %s=", n);
+				print_quoted(psh, ap->val);
+				out1c(psh, '\n');
+			}
+		} else {
+			*v++ = '\0';
+			setalias(psh, n, v);
+		}
+	}
+
+	return (ret);
+}
+
+int
+unaliascmd(shinstance *psh, int argc, char **argv)
+{
+	int i;
+
+	while ((i = nextopt(psh, "a")) != '\0') {
+		if (i == 'a') {
+			rmaliases(psh);
+			return (0);
+		}
+	}
+	for (i = 0; *psh->argptr; psh->argptr++)
+		i = unalias(psh, *psh->argptr);
+
+	return (i);
+}
+
+STATIC struct alias **
+hashalias(shinstance *psh, char *p)
+{
+	unsigned int hashval;
+
+	hashval = *p << 4;
+	while (*p)
+		hashval+= *p++;
+	return &psh->atab[hashval % ATABSIZE];
+}
diff --git a/src/kash/alias.h b/src/kash/alias.h
new file mode 100644
index 0000000..ad980b9
--- /dev/null
+++ b/src/kash/alias.h
@@ -0,0 +1,53 @@
+/*	$NetBSD: alias.h,v 1.6 2003/08/07 09:05:29 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)alias.h	8.2 (Berkeley) 5/4/95
+ */
+
+#define ALIASINUSE	1
+
+struct alias {
+	struct alias *next;
+	char *name;
+	char *val;
+	int flag;
+};
+
+#ifndef SH_FORKED_MODE
+void subshellinitalias(shinstance *, shinstance *);
+#endif
+struct alias *lookupalias(struct shinstance *, char *, int);
+char *get_alias_text(struct shinstance *, char *);
+int aliascmd(struct shinstance *, int, char **);
+int unaliascmd(struct shinstance *, int, char **);
+void rmaliases(struct shinstance *);
diff --git a/src/kash/arith.y b/src/kash/arith.y
new file mode 100644
index 0000000..f53b3da
--- /dev/null
+++ b/src/kash/arith.y
@@ -0,0 +1,209 @@
+%{
+/*	$NetBSD: arith.y,v 1.17 2003/09/17 17:33:36 jmmv Exp $	*/
+
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)arith.y	8.3 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: arith.y,v 1.17 2003/09/17 17:33:36 jmmv Exp $");
+#endif /* not lint */
+#endif
+
+#include <stdlib.h>
+#include "expand.h"
+#include "shell.h"
+#include "error.h"
+#include "output.h"
+#include "memalloc.h"
+#include "shinstance.h"
+
+shinstance *arith_psh;
+const char *arith_buf, *arith_startbuf;
+
+void yyerror(const char *);
+#ifdef TESTARITH
+int main(int , char *[]);
+int error(char *);
+#else
+# undef  malloc
+# define malloc(cb)        sh_malloc(NULL, (cb))
+# undef  realloc
+# define realloc(pv,cb)    sh_realloc(NULL, (pv), (cb))
+# undef  free
+# define free(pv)          sh_free(NULL, (pv))
+#endif
+
+%}
+%token ARITH_NUM ARITH_LPAREN ARITH_RPAREN
+
+%left ARITH_OR
+%left ARITH_AND
+%left ARITH_BOR
+%left ARITH_BXOR
+%left ARITH_BAND
+%left ARITH_EQ ARITH_NE
+%left ARITH_LT ARITH_GT ARITH_GE ARITH_LE
+%left ARITH_LSHIFT ARITH_RSHIFT
+%left ARITH_ADD ARITH_SUB
+%left ARITH_MUL ARITH_DIV ARITH_REM
+%left ARITH_UNARYMINUS ARITH_UNARYPLUS ARITH_NOT ARITH_BNOT
+%%
+
+exp:	expr {
+			return ($1);
+		}
+	;
+
+
+expr:	ARITH_LPAREN expr ARITH_RPAREN { $$ = $2; }
+	| expr ARITH_OR expr	{ $$ = $1 ? $1 : $3 ? $3 : 0; }
+	| expr ARITH_AND expr	{ $$ = $1 ? ( $3 ? $3 : 0 ) : 0; }
+	| expr ARITH_BOR expr	{ $$ = $1 | $3; }
+	| expr ARITH_BXOR expr	{ $$ = $1 ^ $3; }
+	| expr ARITH_BAND expr	{ $$ = $1 & $3; }
+	| expr ARITH_EQ expr	{ $$ = $1 == $3; }
+	| expr ARITH_GT expr	{ $$ = $1 > $3; }
+	| expr ARITH_GE expr	{ $$ = $1 >= $3; }
+	| expr ARITH_LT expr	{ $$ = $1 < $3; }
+	| expr ARITH_LE expr	{ $$ = $1 <= $3; }
+	| expr ARITH_NE expr	{ $$ = $1 != $3; }
+	| expr ARITH_LSHIFT expr { $$ = $1 << $3; }
+	| expr ARITH_RSHIFT expr { $$ = $1 >> $3; }
+	| expr ARITH_ADD expr	{ $$ = $1 + $3; }
+	| expr ARITH_SUB expr	{ $$ = $1 - $3; }
+	| expr ARITH_MUL expr	{ $$ = $1 * $3; }
+	| expr ARITH_DIV expr	{
+			if ($3 == 0)
+				yyerror("division by zero");
+			$$ = $1 / $3;
+			}
+	| expr ARITH_REM expr   {
+			if ($3 == 0)
+				yyerror("division by zero");
+			$$ = $1 % $3;
+			}
+	| ARITH_NOT expr	{ $$ = !($2); }
+	| ARITH_BNOT expr	{ $$ = ~($2); }
+	| ARITH_SUB expr %prec ARITH_UNARYMINUS { $$ = -($2); }
+	| ARITH_ADD expr %prec ARITH_UNARYPLUS { $$ = $2; }
+	| ARITH_NUM
+	;
+%%
+int
+arith(shinstance *psh, const char *s)
+{
+	long result;
+
+	INTOFF;
+/* todo lock */
+   arith_psh = psh;
+	arith_buf = arith_startbuf = s;
+	result = yyparse();
+	arith_lex_reset();	/* reprime lex */
+   arith_psh = NULL;
+/* todo unlock */
+	INTON;
+
+	return (result);
+}
+
+
+/*
+ *  The exp(1) builtin.
+ */
+int
+expcmd(shinstance *psh, int argc, char **argv)
+{
+	const char *p;
+	char *concat;
+	char **ap;
+	long i;
+
+	if (argc > 1) {
+		p = argv[1];
+		if (argc > 2) {
+			/*
+			 * concatenate arguments
+			 */
+			STARTSTACKSTR(psh, concat);
+			ap = argv + 2;
+			for (;;) {
+				while (*p)
+					STPUTC(psh, *p++, concat);
+				if ((p = *ap++) == NULL)
+					break;
+				STPUTC(psh, ' ', concat);
+			}
+			STPUTC(psh, '\0', concat);
+			p = grabstackstr(psh, concat);
+		}
+	} else
+		p = "";
+
+	i = arith(psh, p);
+
+	out1fmt(psh, "%ld\n", i);
+	return (! i);
+}
+
+/*************************/
+#ifdef TEST_ARITH
+#include <stdio.h>
+main(argc, argv)
+	char *argv[];
+{
+	printf("%d\n", exp(argv[1]));
+}
+error(s)
+	char *s;
+{
+	fprintf(stderr, "exp: %s\n", s);
+	exit(1);
+}
+#endif
+
+void
+yyerror(const char *s)
+{
+    shinstance *psh = arith_psh;
+#ifndef YYBISON /* yyerrok references yyerrstatus which is a local variable in yyparse().*/
+	yyerrok;
+#endif
+	yyclearin;
+	arith_lex_reset();	/* reprime lex */
+/** @todo unlock */
+	error(psh, "arithmetic expression: %s: \"%s\"", s, arith_startbuf);
+	/* NOTREACHED */
+}
diff --git a/src/kash/arith_lex.l b/src/kash/arith_lex.l
new file mode 100644
index 0000000..b61e15b
--- /dev/null
+++ b/src/kash/arith_lex.l
@@ -0,0 +1,172 @@
+%option never-interactive
+%option noyywrap
+%option noinput
+%option nounput
+%option noyyget_out
+%option noyy_push_state
+%option noyy_pop_state
+%option noyy_top_state
+%option noyy_scan_buffer
+%option noyy_scan_bytes
+%option noyy_scan_string
+%option noyyget_extra
+%option noyyset_extra
+%option noyyget_leng
+%option noyyget_text
+%option noyyget_lineno
+%option noyyset_lineno
+%option noyyget_in
+%option noyyset_in
+%option noyyget_out
+%option noyyset_out
+%option noyyget_lval
+%option noyyset_lval
+%option noyyget_lloc
+%option noyyset_lloc
+%option noyyget_debug
+%option noyyset_debug
+%option noyyalloc
+%option noyyrealloc
+%option noyyfree
+/** @todo %option reentrant */
+%{
+/*	$NetBSD: arith_lex.l,v 1.13 2005/03/21 22:37:09 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)arith_lex.l	8.3 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: arith_lex.l,v 1.13 2005/03/21 22:37:09 dsl Exp $");
+#endif /* not lint */
+#endif
+
+#include <stdio.h>
+#include "arith.h"
+#include "error.h"
+#include "expand.h"
+#include "var.h"
+#include "shinstance.h"
+
+extern int yylval;
+extern shinstance *arith_psh;
+extern char *arith_buf, *arith_startbuf;
+#undef YY_INPUT
+#define YY_INPUT(buf,result,max) \
+	result = (*buf = *arith_buf++) ? 1 : YY_NULL;
+#define YY_NO_UNPUT
+
+/* Avoid unnecessary libc bits. */
+#undef  ECHO
+#define ECHO \
+	do {} while (0)
+#undef  stdin
+#define stdin  \
+	NULL
+#undef  stdout
+#define stdout \
+	NULL
+#undef  fprintf
+#define fprintf(a, b, c) \
+	((void)0)
+#undef  exit
+#define exit(rc) \
+	do {} while (0)
+#define YY_FATAL_ERROR(msg) \
+	error(arith_psh, "arith: fatal error: %s", msg)
+%}
+
+%%
+[ \t\n]	{ ; }
+0x[0-9a-fA-F]+	{ yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
+0[0-7]*		{ yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
+[1-9][0-9]*	{ yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
+[A-Za-z_][A-Za-z_0-9]*	{ char *v = lookupvar(arith_psh, yytext);
+			if (v) {
+				yylval = strtol(v, &v, 0);
+				if (*v == 0)
+					return ARITH_NUM;
+			}
+			error(arith_psh, "arith: syntax error: \"%s\"", arith_startbuf);
+		}
+"("	{ return(ARITH_LPAREN); }
+")"	{ return(ARITH_RPAREN); }
+"||"	{ return(ARITH_OR); }
+"&&"	{ return(ARITH_AND); }
+"|"	{ return(ARITH_BOR); }
+"^"	{ return(ARITH_BXOR); }
+"&"	{ return(ARITH_BAND); }
+"=="	{ return(ARITH_EQ); }
+"!="	{ return(ARITH_NE); }
+">"	{ return(ARITH_GT); }
+">="	{ return(ARITH_GE); }
+"<"	{ return(ARITH_LT); }
+"<="	{ return(ARITH_LE); }
+"<<"	{ return(ARITH_LSHIFT); }
+">>"	{ return(ARITH_RSHIFT); }
+"*"	{ return(ARITH_MUL); }
+"/"	{ return(ARITH_DIV); }
+"%"	{ return(ARITH_REM); }
+"+"	{ return(ARITH_ADD); }
+"-"	{ return(ARITH_SUB); }
+"~"	{ return(ARITH_BNOT); }
+"!"	{ return(ARITH_NOT); }
+.	{ error(arith_psh, "arith: syntax error: \"%s\"", arith_startbuf); }
+%%
+
+void
+arith_lex_reset() {
+#ifdef YY_NEW_FILE
+	YY_NEW_FILE;
+#endif
+}
+
+void *
+yyalloc(yy_size_t cb)
+{
+	return sh_malloc(NULL, cb);
+}
+
+void *
+yyrealloc(void *pv, yy_size_t cb)
+{
+	return sh_realloc(NULL, pv, cb);
+}
+
+void
+yyfree(void *pv)
+{
+	sh_free(NULL, pv);
+}
+
diff --git a/src/kash/bld_signames.c b/src/kash/bld_signames.c
new file mode 100644
index 0000000..7f266ce
--- /dev/null
+++ b/src/kash/bld_signames.c
@@ -0,0 +1,172 @@
+
+#include "shinstance.h" /* for MSC */
+#include <string.h>
+#include <stdio.h>
+
+int main(int argc, char **argv)
+{
+    char    aszSigName[NSIG][16];
+    FILE   *pFile;
+    int     i;
+
+    if (argc != 2 || *argv[1] == '\0')
+    {
+        fprintf(stderr, "syntax error: Expected exactly one parameter, the output-file!\n");
+        return 2;
+    }
+
+    /*
+     * Populate the name array.
+     */
+    strcpy(aszSigName[0], "Signal 0");
+    for (i = 1; i < NSIG; ++i)
+        sprintf(aszSigName[i], "%i", i);
+
+#define SET_SIG_STR(sig) strcpy(aszSigName[SIG##sig], #sig);
+
+#if defined(SIGRTMIN) && defined(SIGRTMAX)
+    if (SIGRTMIN < SIGRTMAX && SIGRTMAX < NSIG)
+    {
+        /* lets mimick what bash seems to be doing. */
+        int const iMidWay = SIGRTMIN + (SIGRTMAX - SIGRTMIN) / 2;
+        SET_SIG_STR(RTMIN);
+        SET_SIG_STR(RTMAX);
+
+        for (i = SIGRTMIN + 1; i <= iMidWay; i++)
+            sprintf(aszSigName[i], "RTMIN+%i", (int)(i - SIGRTMIN));
+        for (; i < SIGRTMAX; i++)
+            sprintf(aszSigName[i], "RTMAX%i", (int)(i - SIGRTMAX));
+    }
+    else
+        fprintf(stderr, "warning: SIGRTMIN=%d, SIGRTMAX=%d, NSIG=%d\n", (int)SIGRTMIN, (int)SIGRTMAX, (int)NSIG);
+#endif
+
+#ifdef SIGHUP
+    SET_SIG_STR(HUP);
+#endif
+#ifdef SIGINT
+    SET_SIG_STR(INT);
+#endif
+#ifdef SIGQUIT
+    SET_SIG_STR(QUIT);
+#endif
+#ifdef SIGILL
+    SET_SIG_STR(ILL);
+#endif
+#ifdef SIGTRAP
+    SET_SIG_STR(TRAP);
+#endif
+#ifdef SIGABRT
+    SET_SIG_STR(ABRT);
+#endif
+#ifdef SIGIOT
+    SET_SIG_STR(IOT);
+#endif
+#ifdef SIGBUS
+    SET_SIG_STR(BUS);
+#endif
+#ifdef SIGFPE
+    SET_SIG_STR(FPE);
+#endif
+#ifdef SIGKILL
+    SET_SIG_STR(KILL);
+#endif
+#ifdef SIGUSR1
+    SET_SIG_STR(USR1);
+#endif
+#ifdef SIGSEGV
+    SET_SIG_STR(SEGV);
+#endif
+#ifdef SIGUSR2
+    SET_SIG_STR(USR2);
+#endif
+#ifdef SIGPIPE
+    SET_SIG_STR(PIPE);
+#endif
+#ifdef SIGALRM
+    SET_SIG_STR(ALRM);
+#endif
+#ifdef SIGTERM
+    SET_SIG_STR(TERM);
+#endif
+#ifdef SIGSTKFLT
+    SET_SIG_STR(STKFLT);
+#endif
+#ifdef SIGCHLD
+    SET_SIG_STR(CHLD);
+#endif
+#ifdef SIGCONT
+    SET_SIG_STR(CONT);
+#endif
+#ifdef SIGSTOP
+    SET_SIG_STR(STOP);
+#endif
+#ifdef SIGTSTP
+    SET_SIG_STR(TSTP);
+#endif
+#ifdef SIGTTIN
+    SET_SIG_STR(TTIN);
+#endif
+#ifdef SIGTTOU
+    SET_SIG_STR(TTOU);
+#endif
+#ifdef SIGURG
+    SET_SIG_STR(URG);
+#endif
+#ifdef SIGXCPU
+    SET_SIG_STR(XCPU);
+#endif
+#ifdef SIGXFSZ
+    SET_SIG_STR(XFSZ);
+#endif
+#ifdef SIGVTALRM
+    SET_SIG_STR(VTALRM);
+#endif
+#ifdef SIGPROF
+    SET_SIG_STR(PROF);
+#endif
+#ifdef SIGWINCH
+    SET_SIG_STR(WINCH);
+#endif
+#ifdef SIGIO
+    SET_SIG_STR(IO);
+#endif
+#ifdef SIGPWR
+    SET_SIG_STR(PWR);
+#endif
+#ifdef SIGSYS
+    SET_SIG_STR(SYS);
+#endif
+#ifdef SIGBREAK
+    SET_SIG_STR(BREAK);
+#endif
+#undef SET_SIG_STR
+
+    /*
+     * Write out the list.
+     */
+    pFile = fopen(argv[1], "w");
+    if (!pFile)
+    {
+        fprintf(stderr, "error: failed to open '%s' for writing\n", argv[1]);
+        return 1;
+    }
+    fputs("/* autogenerate */\n"
+          "\n"
+          "#include \"shinstance.h\"\n"
+          "\n"
+          "const char * const sys_signame[NSIG] = \n"
+          "{\n"
+          , pFile);
+    for (i = 0; i < NSIG; i++)
+        fprintf(pFile, "    \"%s\",\n", aszSigName[i]);
+    fputs("};\n", pFile);
+
+    if (fclose(pFile) != 0)
+    {
+        fprintf(stderr, "error: error writing/closing '%s' after writing it\n", argv[1]);
+        return 1;
+    }
+    return 0;
+}
+
diff --git a/src/kash/bltin/Makefile.kup b/src/kash/bltin/Makefile.kup
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/kash/bltin/Makefile.kup
diff --git a/src/kash/bltin/echo.1 b/src/kash/bltin/echo.1
new file mode 100644
index 0000000..7e71fa3
--- /dev/null
+++ b/src/kash/bltin/echo.1
@@ -0,0 +1,109 @@
+.\"	$NetBSD: echo.1,v 1.13 2003/08/07 09:05:40 agc Exp $
+.\"
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Kenneth Almquist.
+.\" Copyright 1989 by Kenneth Almquist
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)echo.1	8.1 (Berkeley) 5/31/93
+.\"
+.Dd May 31, 1993
+.Dt ECHO 1
+.Os
+.Sh NAME
+.Nm echo
+.Nd produce message in a shell script
+.Sh SYNOPSIS
+.Nm
+.Op Fl n | Fl e
+.Ar args ...
+.Sh DESCRIPTION
+.Nm
+prints its arguments on the standard output, separated by spaces.
+Unless the
+.Fl n
+option is present, a newline is output following the arguments.
+The
+.Fl e
+option causes
+.Nm
+to treat the escape sequences specially, as described in the following
+paragraph.
+The
+.Fl e
+option is the default, and is provided solely for compatibility with
+other systems.
+Only one of the options
+.Fl n
+and
+.Fl e
+may be given.
+.Pp
+If any of the following sequences of characters is encountered during
+output, the sequence is not output.  Instead, the specified action is
+performed:
+.Bl -tag -width indent
+.It Li \eb
+A backspace character is output.
+.It Li \ec
+Subsequent output is suppressed.  This is normally used at the end of the
+last argument to suppress the trailing newline that
+.Nm
+would otherwise output.
+.It Li \ef
+Output a form feed.
+.It Li \en
+Output a newline character.
+.It Li \er
+Output a carriage return.
+.It Li \et
+Output a (horizontal) tab character.
+.It Li \ev
+Output a vertical tab.
+.It Li \e0 Ns Ar digits
+Output the character whose value is given by zero to three digits.
+If there are zero digits, a nul character is output.
+.It Li \e\e
+Output a backslash.
+.El
+.Sh HINTS
+Remember that backslash is special to the shell and needs to be escaped.
+To output a message to standard error, say
+.Pp
+.D1  echo message \*[Gt]\*[Am]2
+.Sh BUGS
+The octal character escape mechanism
+.Pq Li \e0 Ns Ar digits
+differs from the
+C language mechanism.
+.Pp
+There is no way to force
+.Nm
+to treat its arguments literally, rather than interpreting them as
+options and escape sequences.
diff --git a/src/kash/bltin/echo.c b/src/kash/bltin/echo.c
new file mode 100644
index 0000000..ba778b1
--- /dev/null
+++ b/src/kash/bltin/echo.c
@@ -0,0 +1,120 @@
+/*	$NetBSD: echo.c,v 1.12 2005/02/06 04:43:43 perry Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)echo.c	8.1 (Berkeley) 5/31/93
+ */
+
+/*
+ * Echo command.
+ *
+ * echo is steeped in tradition - several of them!
+ * netbsd has supported 'echo [-n | -e] args' in spite of -e not being
+ * documented anywhere.
+ * Posix requires that -n be supported, output from strings containing
+ * \ is implementation defined
+ * The Single Unix Spec requires that \ escapes be treated as if -e
+ * were set, but that -n not be treated as an option.
+ * (ksh supports 'echo [-eEn] args', but not -- so that it is actually
+ * impossible to actually output '-n')
+ *
+ * It is suggested that 'printf "%b" "string"' be used to get \ sequences
+ * expanded.  printf is now a builtin of netbsd's sh and csh.
+ */
+
+#include "shinstance.h"
+#include "builtins.h"
+
+int
+echocmd(shinstance *psh, int argc, char **argv)
+{
+	char **ap;
+	const char *p;
+	int nflag = 0;
+	int eflag = 0;
+
+	ap = argv;
+	if (argc)
+		ap++;
+
+	if ((p = *ap) != NULL && *p == '-') {
+		if (p[1] == 'n' && !p[2]) {
+			nflag = 1;
+			ap++;
+		} else if (p[1] == 'e' && !p[2]) {
+			eflag = 1;
+			ap++;
+		}
+	}
+
+	while ((p = *ap++) != NULL) {
+		if (!eflag) {
+			out1str(psh, p);
+		} else {
+			char c;
+			int count;
+
+			while ((c = *p++) != '\0') {
+				if (c == '\\') {
+					switch (*p++) {
+					case 'a':  c = '\a';  break;	/* bell */
+					case 'b':  c = '\b';  break;
+					case 'c':  return 0;		/* exit */
+					case 'e':  c =  033;  break;	/* escape */
+					case 'f':  c = '\f';  break;
+					case 'n':  c = '\n';  break;
+					case 'r':  c = '\r';  break;
+					case 't':  c = '\t';  break;
+					case 'v':  c = '\v';  break;
+					case '\\':  break;		/* c = '\\' */
+					case '0':
+						c = 0;
+						count = 3;
+						while (--count >= 0 && (unsigned)(*p - '0') < 8)
+							c = (c << 3) + (*p++ - '0');
+						break;
+					default:
+						/* Output the '/' and char following */
+						p--;
+						break;
+					}
+				}
+				out1c(psh, c);
+			}
+		}
+		if (*ap)
+			out1c(psh, ' ');
+	}
+	if (! nflag)
+		out1c(psh, '\n');
+	return 0;
+}
diff --git a/src/kash/bltin/kill.c b/src/kash/bltin/kill.c
new file mode 100644
index 0000000..4b6e5d7
--- /dev/null
+++ b/src/kash/bltin/kill.c
@@ -0,0 +1,236 @@
+/* $NetBSD: kill.c,v 1.23 2003/08/07 09:05:13 agc Exp $ */
+
+/*
+ * Copyright (c) 1988, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#if !defined(lint) && !defined(SHELL)
+__COPYRIGHT("@(#) Copyright (c) 1988, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n");
+#endif /* not lint */
+#ifndef lint
+static char sccsid[] = "@(#)kill.c	8.4 (Berkeley) 4/28/95";
+#else
+__RCSID("$NetBSD: kill.c,v 1.23 2003/08/07 09:05:13 agc Exp $");
+#endif /* not lint */
+#endif
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "shtypes.h"
+#include "jobs.h"
+#include "error.h"
+#include "shinstance.h"
+
+
+static int nosig(shinstance *, char *);
+static void printsignals(shinstance *, struct output *);
+static int signame_to_signum(char *);
+static int usage(shinstance *psh);
+
+int
+killcmd(shinstance *psh, int argc, char *argv[])
+{
+	int errors, numsig;
+	char *ep;
+
+	if (argc < 2)
+		return usage(psh);
+
+	numsig = SIGTERM;
+
+	argc--, argv++;
+	if (strcmp(*argv, "-l") == 0) {
+		argc--, argv++;
+		if (argc > 1)
+			return usage(psh);
+		if (argc == 1) {
+			if (isdigit((unsigned char)**argv) == 0)
+				return usage(psh);
+			numsig = strtol(*argv, &ep, 10);
+			if (*ep != '\0') {
+				sh_errx(psh, EXIT_FAILURE, "illegal signal number: %s",
+						*argv);
+				/* NOTREACHED */
+			}
+			if (numsig >= 128)
+				numsig -= 128;
+			if (numsig <= 0 || numsig >= NSIG)
+				return nosig(psh, *argv);
+			outfmt(psh->out1, "%s\n", sys_signame[numsig]);
+			//sh_exit(psh, 0);
+			return 0;
+		}
+		printsignals(psh, psh->out1);
+		//sh_exit(psh, 0);
+		return 0;
+	}
+
+	if (!strcmp(*argv, "-s")) {
+		argc--, argv++;
+		if (argc < 1) {
+			sh_warnx(psh, "option requires an argument -- s");
+			return usage(psh);
+		}
+		if (strcmp(*argv, "0")) {
+			if ((numsig = signame_to_signum(*argv)) < 0)
+				return nosig(psh, *argv);
+		} else
+			numsig = 0;
+		argc--, argv++;
+	} else if (**argv == '-') {
+		++*argv;
+		if (isalpha((unsigned char)**argv)) {
+			if ((numsig = signame_to_signum(*argv)) < 0)
+				return nosig(psh, *argv);
+		} else if (isdigit((unsigned char)**argv)) {
+			numsig = strtol(*argv, &ep, 10);
+			if (!*argv || *ep) {
+				sh_errx(psh, EXIT_FAILURE, "illegal signal number: %s",
+						*argv);
+				/* NOTREACHED */
+			}
+			if (numsig < 0 || numsig >= NSIG)
+				return nosig(psh, *argv);
+		} else
+			return nosig(psh, *argv);
+		argc--, argv++;
+	}
+
+	if (argc == 0)
+		return usage(psh);
+
+	for (errors = 0; argc; argc--, argv++) {
+		const char * const strpid = argv[0];
+		shpid pid;
+		if (*strpid == '%') {
+			pid = getjobpgrp(psh, strpid);
+			if (pid == 0) {
+				sh_warnx(psh, "illegal job id: %s", strpid);
+				errors = 1;
+				continue;
+			}
+		} else {
+#if !defined(SH_FORKED_MODE) && defined(_MSC_VER)
+			pid = _strtoi64(strpid, &ep, 10);
+#elif !defined(SH_FORKED_MODE)
+			pid = strtoll(strpid, &ep, 10);
+#else
+			pid = strtol(strpid, &ep, 10);
+#endif
+			if (!*strpid || *ep) {
+				sh_warnx(psh, "illegal process id: %s", strpid);
+				errors = 1;
+				continue;
+			}
+		}
+		if (sh_kill(psh, pid, numsig) == -1) {
+			sh_warn(psh, "%s", strpid);
+			errors = 1;
+		}
+		/* Wakeup the process if it was suspended, so it can
+		   exit without an explicit 'fg'. */
+		if (numsig == SIGTERM || numsig == SIGHUP)
+			sh_kill(psh, pid, SIGCONT);
+	}
+
+	//sh_exit(psh, errors);
+	///* NOTREACHED */
+	return errors;
+}
+
+static int
+signame_to_signum(char *sig)
+{
+	int n;
+	if (strncasecmp(sig, "sig", 3) == 0)
+		sig += 3;
+	for (n = 1; n < NSIG; n++) {
+		if (!strcasecmp(sys_signame[n], sig))
+			return (n);
+	}
+	return (-1);
+}
+
+static int
+nosig(shinstance *psh, char *name)
+{
+	sh_warnx(psh, "unknown signal %s; valid signals:", name);
+	printsignals(psh, psh->out2);
+	//sh_exit(psh, 1);
+	///* NOTREACHED */
+	return 1;
+}
+
+static void
+printsignals(shinstance *psh, struct output *out)
+{
+	int sig;
+	size_t len, nl;
+	const char *name;
+	unsigned termwidth = 80;
+
+	if (shfile_isatty(&psh->fdtab, out->fd)) {
+		sh_winsize win;
+		if (shfile_ioctl(&psh->fdtab, out->fd, TIOCGWINSZ, &win) == 0 && win.ws_col > 0)
+			termwidth = win.ws_col;
+	}
+
+	for (len = 0, sig = 1; sig < NSIG; sig++) {
+		name = sys_signame[sig];
+		nl = 1 + strlen(name);
+
+		if (len + nl >= termwidth) {
+			outfmt(out, "\n");
+			len = 0;
+		} else if (len != 0)
+			outfmt(out, " ");
+		len += nl;
+		outfmt(out, "%s", name);
+	}
+	if (len != 0)
+		outfmt(out, "\n");
+}
+
+static int
+usage(shinstance *psh)
+{
+	outfmt(psh->out2,
+	    "usage: %s [-s signal_name] pid ...\n"
+	    "       %s -l [exit_status]\n"
+	    "       %s -signal_name pid ...\n"
+	    "       %s -signal_number pid ...\n",
+	    psh->commandname, psh->commandname, psh->commandname, psh->commandname);
+	//sh_exit(psh, 1);
+	///* NOTREACHED */
+	return 1;
+}
diff --git a/src/kash/bltin/printf.c b/src/kash/bltin/printf.c
new file mode 100644
index 0000000..4a6a952
--- /dev/null
+++ b/src/kash/bltin/printf.c
@@ -0,0 +1,659 @@
+/*	$NetBSD: printf.c,v 1.31 2005/03/22 23:55:46 dsl Exp $	*/
+
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#if !defined(BUILTIN) && !defined(SHELL)
+__COPYRIGHT("@(#) Copyright (c) 1989, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n");
+#endif
+#ifndef lint
+static char sccsid[] = "@(#)printf.c	8.2 (Berkeley) 3/22/95";
+#else
+__RCSID("$NetBSD: printf.c,v 1.31 2005/03/22 23:55:46 dsl Exp $");
+#endif /* not lint */
+#endif
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <locale.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "shinstance.h"
+
+#ifdef __GNUC__
+#define ESCAPE '\e'
+#else
+#define ESCAPE 033
+#endif
+
+static void	 conv_escape_str(char *, void (*)(int));
+static char	*conv_escape(char *, char *);
+static char	*conv_expand(const char *);
+static int	 getchr(void);
+static double	 getdouble(void);
+static int	 getwidth(void);
+static intmax_t	 getintmax(void);
+static uintmax_t getuintmax(void);
+static char	*getstr(void);
+static char	*mklong(const char *, int);
+static void      check_conversion(const char *, const char *);
+static void	 usage(void);
+
+static void	b_count(int);
+static void	b_output(int);
+static size_t	b_length;
+static char	*b_fmt;
+
+static int	rval;
+static char  **gargv;
+
+#ifdef BUILTIN		/* csh builtin */
+#define main progprintf
+#endif
+
+#ifdef SHELL		/* sh (aka ash) builtin */
+#define main printfcmd
+#include "../../bin/sh/bltin/bltin.h"
+#endif /* SHELL */
+
+#define PF(f, func) { \
+	if (fieldwidth != -1) { \
+		if (precision != -1) \
+			(void)printf(f, fieldwidth, precision, func); \
+		else \
+			(void)printf(f, fieldwidth, func); \
+	} else if (precision != -1) \
+		(void)printf(f, precision, func); \
+	else \
+		(void)printf(f, func); \
+}
+
+#define APF(cpp, f, func) { \
+	if (fieldwidth != -1) { \
+		if (precision != -1) \
+			(void)asprintf(cpp, f, fieldwidth, precision, func); \
+		else \
+			(void)asprintf(cpp, f, fieldwidth, func); \
+	} else if (precision != -1) \
+		(void)asprintf(cpp, f, precision, func); \
+	else \
+		(void)asprintf(cpp, f, func); \
+}
+
+int main(int, char **);
+int main(int argc, char *argv[])
+{
+	char *fmt, *start;
+	int fieldwidth, precision;
+	char nextch;
+	char *format;
+	int ch;
+
+#if !defined(SHELL) && !defined(BUILTIN)
+	(void)setlocale (LC_ALL, "");
+#endif
+
+	while ((ch = getopt(argc, argv, "")) != -1) {
+		switch (ch) {
+		case '?':
+		default:
+			usage();
+			return 1;
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (argc < 1) {
+		usage();
+		return 1;
+	}
+
+	format = *argv;
+	gargv = ++argv;
+
+#define SKIP1	"#-+ 0"
+#define SKIP2	"*0123456789"
+	do {
+		/*
+		 * Basic algorithm is to scan the format string for conversion
+		 * specifications -- once one is found, find out if the field
+		 * width or precision is a '*'; if it is, gather up value.
+		 * Note, format strings are reused as necessary to use up the
+		 * provided arguments, arguments of zero/null string are
+		 * provided to use up the format string.
+		 */
+
+		/* find next format specification */
+		for (fmt = format; (ch = *fmt++) != '\0';) {
+			if (ch == '\\') {
+				char c_ch;
+				fmt = conv_escape(fmt, &c_ch);
+				putchar(c_ch);
+				continue;
+			}
+			if (ch != '%' || (*fmt == '%' && ++fmt)) {
+				(void)putchar(ch);
+				continue;
+			}
+
+			/* Ok - we've found a format specification,
+			   Save its address for a later printf(). */
+			start = fmt - 1;
+
+			/* skip to field width */
+			fmt += strspn(fmt, SKIP1);
+			fieldwidth = *fmt == '*' ? getwidth() : -1;
+
+			/* skip to possible '.', get following precision */
+			fmt += strspn(fmt, SKIP2);
+			if (*fmt == '.')
+				++fmt;
+			precision = *fmt == '*' ? getwidth() : -1;
+
+			fmt += strspn(fmt, SKIP2);
+
+			ch = *fmt;
+			if (!ch) {
+				warnx("missing format character");
+				return (1);
+			}
+			/* null terminate format string to we can use it
+			   as an argument to printf. */
+			nextch = fmt[1];
+			fmt[1] = 0;
+			switch (ch) {
+
+			case 'B': {
+				const char *p = conv_expand(getstr());
+				*fmt = 's';
+				PF(start, p);
+				break;
+			}
+			case 'b': {
+				/* There has to be a better way to do this,
+				 * but the string we generate might have
+				 * embedded nulls. */
+				static char *a, *t;
+				char *cp = getstr();
+				/* Free on entry in case shell longjumped out */
+				if (a != NULL)
+					free(a);
+				a = NULL;
+				if (t != NULL)
+					free(t);
+				t = NULL;
+				/* Count number of bytes we want to output */
+				b_length = 0;
+				conv_escape_str(cp, b_count);
+				t = malloc(b_length + 1);
+				if (t == NULL)
+					break;
+				memset(t, 'x', b_length);
+				t[b_length] = 0;
+				/* Get printf to calculate the lengths */
+				*fmt = 's';
+				APF(&a, start, t);
+				b_fmt = a;
+				/* Output leading spaces and data bytes */
+				conv_escape_str(cp, b_output);
+				/* Add any trailing spaces */
+				printf("%s", b_fmt);
+				break;
+			}
+			case 'c': {
+				char p = getchr();
+				PF(start, p);
+				break;
+			}
+			case 's': {
+				char *p = getstr();
+				PF(start, p);
+				break;
+			}
+			case 'd':
+			case 'i': {
+				intmax_t p = getintmax();
+				char *f = mklong(start, ch);
+				PF(f, p);
+				break;
+			}
+			case 'o':
+			case 'u':
+			case 'x':
+			case 'X': {
+				uintmax_t p = getuintmax();
+				char *f = mklong(start, ch);
+				PF(f, p);
+				break;
+			}
+			case 'e':
+			case 'E':
+			case 'f':
+			case 'g':
+			case 'G': {
+				double p = getdouble();
+				PF(start, p);
+				break;
+			}
+			default:
+				warnx("%s: invalid directive", start);
+				return 1;
+			}
+			*fmt++ = ch;
+			*fmt = nextch;
+			/* escape if a \c was encountered */
+			if (rval & 0x100)
+				return rval & ~0x100;
+		}
+	} while (gargv != argv && *gargv);
+
+	return rval;
+}
+
+/* helper functions for conv_escape_str */
+
+static void
+/*ARGSUSED*/
+b_count(int ch)
+{
+	b_length++;
+}
+
+/* Output one converted character for every 'x' in the 'format' */
+
+static void
+b_output(int ch)
+{
+	for (;;) {
+		switch (*b_fmt++) {
+		case 0:
+			b_fmt--;
+			return;
+		case ' ':
+			putchar(' ');
+			break;
+		default:
+			putchar(ch);
+			return;
+		}
+	}
+}
+
+
+/*
+ * Print SysV echo(1) style escape string
+ *	Halts processing string if a \c escape is encountered.
+ */
+static void
+conv_escape_str(char *str, void (*do_putchar)(int))
+{
+	int value;
+	int ch;
+	char c;
+
+	while ((ch = *str++) != '\0') {
+		if (ch != '\\') {
+			do_putchar(ch);
+			continue;
+		}
+
+		ch = *str++;
+		if (ch == 'c') {
+			/* \c as in SYSV echo - abort all processing.... */
+			rval |= 0x100;
+			break;
+		}
+
+		/*
+		 * %b string octal constants are not like those in C.
+		 * They start with a \0, and are followed by 0, 1, 2,
+		 * or 3 octal digits.
+		 */
+		if (ch == '0') {
+			int octnum = 0, i;
+			for (i = 0; i < 3; i++) {
+				if (!isdigit((unsigned char)*str) || *str > '7')
+					break;
+				octnum = (octnum << 3) | (*str++ - '0');
+			}
+			do_putchar(octnum);
+			continue;
+		}
+
+		/* \[M][^|-]C as defined by vis(3) */
+		if (ch == 'M' && *str == '-') {
+			do_putchar(0200 | str[1]);
+			str += 2;
+			continue;
+		}
+		if (ch == 'M' && *str == '^') {
+			str++;
+			value = 0200;
+			ch = '^';
+		} else
+			value = 0;
+		if (ch == '^') {
+			ch = *str++;
+			if (ch == '?')
+				value |= 0177;
+			else
+				value |= ch & 037;
+			do_putchar(value);
+			continue;
+		}
+
+		/* Finally test for sequences valid in the format string */
+		str = conv_escape(str - 1, &c);
+		do_putchar(c);
+	}
+}
+
+/*
+ * Print "standard" escape characters
+ */
+static char *
+conv_escape(char *str, char *conv_ch)
+{
+	int value;
+	int ch;
+	char num_buf[4], *num_end;
+
+	ch = *str++;
+
+	switch (ch) {
+	case '0': case '1': case '2': case '3':
+	case '4': case '5': case '6': case '7':
+		num_buf[0] = ch;
+		ch = str[0];
+		num_buf[1] = ch;
+		num_buf[2] = ch ? str[1] : 0;
+		num_buf[3] = 0;
+		value = strtoul(num_buf, &num_end, 8);
+		str += num_end  - (num_buf + 1);
+		break;
+
+	case 'x':
+		/* Hexadecimal character constants are not required to be
+		   supported (by SuS v1) because there is no consistent
+		   way to detect the end of the constant.
+		   Supporting 2 byte constants is a compromise. */
+		ch = str[0];
+		num_buf[0] = ch;
+		num_buf[1] = ch ? str[1] : 0;
+		num_buf[2] = 0;
+		value = strtoul(num_buf, &num_end, 16);
+		str += num_end - num_buf;
+		break;
+
+	case '\\':	value = '\\';	break;	/* backslash */
+	case '\'':	value = '\'';	break;	/* single quote */
+	case '"':	value = '"';	break;	/* double quote */
+	case 'a':	value = '\a';	break;	/* alert */
+	case 'b':	value = '\b';	break;	/* backspace */
+	case 'e':	value = ESCAPE;	break;	/* escape */
+	case 'f':	value = '\f';	break;	/* form-feed */
+	case 'n':	value = '\n';	break;	/* newline */
+	case 'r':	value = '\r';	break;	/* carriage-return */
+	case 't':	value = '\t';	break;	/* tab */
+	case 'v':	value = '\v';	break;	/* vertical-tab */
+
+	default:
+		warnx("unknown escape sequence `\\%c'", ch);
+		rval = 1;
+		value = ch;
+		break;
+	}
+
+	*conv_ch = value;
+	return str;
+}
+
+/* expand a string so that everything is printable */
+
+static char *
+conv_expand(const char *str)
+{
+	static char *conv_str;
+	static char no_memory[] = "<no memory>";
+	char *cp;
+	int ch;
+
+	if (conv_str)
+		free(conv_str);
+	/* get a buffer that is definitely large enough.... */
+	conv_str = malloc(4 * strlen(str) + 1);
+	if (!conv_str)
+		return no_memory;
+	cp = conv_str;
+
+	while ((ch = *(const unsigned char *)str++) != '\0') {
+		switch (ch) {
+		/* Use C escapes for expected control characters */
+		case '\\':	ch = '\\';	break;	/* backslash */
+		case '\'':	ch = '\'';	break;	/* single quote */
+		case '"':	ch = '"';	break;	/* double quote */
+		case '\a':	ch = 'a';	break;	/* alert */
+		case '\b':	ch = 'b';	break;	/* backspace */
+		case ESCAPE:	ch = 'e';	break;	/* escape */
+		case '\f':	ch = 'f';	break;	/* form-feed */
+		case '\n':	ch = 'n';	break;	/* newline */
+		case '\r':	ch = 'r';	break;	/* carriage-return */
+		case '\t':	ch = 't';	break;	/* tab */
+		case '\v':	ch = 'v';	break;	/* vertical-tab */
+		default:
+			/* Copy anything printable */
+			if (isprint(ch)) {
+				*cp++ = ch;
+				continue;
+			}
+			/* Use vis(3) encodings for the rest */
+			*cp++ = '\\';
+			if (ch & 0200) {
+				*cp++ = 'M';
+				ch &= ~0200;
+			}
+			if (ch == 0177) {
+				*cp++ = '^';
+				*cp++ = '?';
+				continue;
+			}
+			if (ch < 040) {
+				*cp++ = '^';
+				*cp++ = ch | 0100;
+				continue;
+			}
+			*cp++ = '-';
+			*cp++ = ch;
+			continue;
+		}
+		*cp++ = '\\';
+		*cp++ = ch;
+	}
+
+	*cp = 0;
+	return conv_str;
+}
+
+static char *
+mklong(const char *str, int ch)
+{
+	static char copy[64];
+	size_t len;
+
+	len = strlen(str) + 2;
+	if (len > sizeof copy) {
+		warnx("format %s too complex\n", str);
+		len = 4;
+	}
+	(void)memmove(copy, str, len - 3);
+	copy[len - 3] = 'j';
+	copy[len - 2] = ch;
+	copy[len - 1] = '\0';
+	return copy;
+}
+
+static int
+getchr(void)
+{
+	if (!*gargv)
+		return 0;
+	return (int)**gargv++;
+}
+
+static char *
+getstr(void)
+{
+	static char empty[] = "";
+	if (!*gargv)
+		return empty;
+	return *gargv++;
+}
+
+static int
+getwidth(void)
+{
+	long val;
+	char *s, *ep;
+
+	s = *gargv;
+	if (!*gargv)
+		return (0);
+	gargv++;
+
+	errno = 0;
+	val = strtoul(s, &ep, 0);
+	check_conversion(s, ep);
+
+	/* Arbitrarily 'restrict' field widths to 1Mbyte */
+	if (val < 0 || val > 1 << 20) {
+		warnx("%s: invalid field width", s);
+		return 0;
+	}
+
+	return val;
+}
+
+static intmax_t
+getintmax(void)
+{
+	intmax_t val;
+	char *cp, *ep;
+
+	cp = *gargv;
+	if (cp == NULL)
+		return 0;
+	gargv++;
+
+	if (*cp == '\"' || *cp == '\'')
+		return *(cp+1);
+
+	errno = 0;
+	val = strtoimax(cp, &ep, 0);
+	check_conversion(cp, ep);
+	return val;
+}
+
+static uintmax_t
+getuintmax(void)
+{
+	uintmax_t val;
+	char *cp, *ep;
+
+	cp = *gargv;
+	if (cp == NULL)
+		return 0;
+	gargv++;
+
+	if (*cp == '\"' || *cp == '\'')
+		return *(cp + 1);
+
+	/* strtoumax won't error -ve values */
+	while (isspace(*(unsigned char *)cp))
+		cp++;
+	if (*cp == '-') {
+		warnx("%s: expected positive numeric value", cp);
+		rval = 1;
+		return 0;
+	}
+
+	errno = 0;
+	val = strtoumax(cp, &ep, 0);
+	check_conversion(cp, ep);
+	return val;
+}
+
+static double
+getdouble(void)
+{
+	double val;
+	char *ep;
+
+	if (!*gargv)
+		return (0.0);
+
+	if (**gargv == '\"' || **gargv == '\'')
+		return (double) *((*gargv++)+1);
+
+	errno = 0;
+	val = strtod(*gargv, &ep);
+	check_conversion(*gargv++, ep);
+	return val;
+}
+
+static void
+check_conversion(const char *s, const char *ep)
+{
+	if (*ep) {
+		if (ep == s)
+			warnx("%s: expected numeric value", s);
+		else
+			warnx("%s: not completely converted", s);
+		rval = 1;
+	} else if (errno == ERANGE) {
+		warnx("%s: %s", s, sh_strerror(psh, ERANGE));
+		rval = 1;
+	}
+}
+
+static void
+usage(void)
+{
+	(void)fprintf(stderr, "Usage: %s format [arg ...]\n", getprogname());
+}
diff --git a/src/kash/bltin/test.c b/src/kash/bltin/test.c
new file mode 100644
index 0000000..303a0f3
--- /dev/null
+++ b/src/kash/bltin/test.c
@@ -0,0 +1,483 @@
+/* $NetBSD: test.c,v 1.26 2005/02/10 06:56:55 simonb Exp $ */
+
+/*
+ * test(1); version 7-like  --  author Erik Baalbergen
+ * modified by Eric Gisin to be used as built-in.
+ * modified by Arnold Robbins to add SVR3 compatibility
+ * (-x -c -b -p -u -g -k) plus Korn's -L -nt -ot -ef and new -S (socket).
+ * modified by J.T. Conklin for NetBSD.
+ *
+ * This program is in the Public Domain.
+ */
+
+#if 0
+#ifndef lint
+__RCSID("$NetBSD: test.c,v 1.26 2005/02/10 06:56:55 simonb Exp $");
+#endif
+#endif
+
+#include <sys/types.h>
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include "shell.h"
+#include "error.h"
+#include "shinstance.h"
+
+
+/* test(1) accepts the following grammar:
+	oexpr	::= aexpr | aexpr "-o" oexpr ;
+	aexpr	::= nexpr | nexpr "-a" aexpr ;
+	nexpr	::= primary | "!" primary
+	primary	::= unary-operator operand
+		| operand binary-operator operand
+		| operand
+		| "(" oexpr ")"
+		;
+	unary-operator ::= "-r"|"-w"|"-x"|"-f"|"-d"|"-c"|"-b"|"-p"|
+		"-u"|"-g"|"-k"|"-s"|"-t"|"-z"|"-n"|"-o"|"-O"|"-G"|"-L"|"-S";
+
+	binary-operator ::= "="|"!="|"-eq"|"-ne"|"-ge"|"-gt"|"-le"|"-lt"|
+			"-nt"|"-ot"|"-ef";
+	operand ::= <any legal UNIX file name>
+*/
+
+enum token {
+	EOI,
+	FILRD,
+	FILWR,
+	FILEX,
+	FILEXIST,
+	FILREG,
+	FILDIR,
+	FILCDEV,
+	FILBDEV,
+	FILFIFO,
+	FILSOCK,
+	FILSYM,
+	FILGZ,
+	FILTT,
+	FILSUID,
+	FILSGID,
+	FILSTCK,
+	FILNT,
+	FILOT,
+	FILEQ,
+	FILUID,
+	FILGID,
+	STREZ,
+	STRNZ,
+	STREQ,
+	STRNE,
+	STRLT,
+	STRGT,
+	INTEQ,
+	INTNE,
+	INTGE,
+	INTGT,
+	INTLE,
+	INTLT,
+	UNOT,
+	BAND,
+	BOR,
+	LPAREN,
+	RPAREN,
+	OPERAND
+};
+
+enum token_types {
+	UNOP,
+	BINOP,
+	BUNOP,
+	BBINOP,
+	PAREN
+};
+
+static struct t_op {
+	const char *op_text;
+	short op_num, op_type;
+} const ops [] = {
+	{"-r",	FILRD,	UNOP},
+	{"-w",	FILWR,	UNOP},
+	{"-x",	FILEX,	UNOP},
+	{"-e",	FILEXIST,UNOP},
+	{"-f",	FILREG,	UNOP},
+	{"-d",	FILDIR,	UNOP},
+	{"-c",	FILCDEV,UNOP},
+	{"-b",	FILBDEV,UNOP},
+	{"-p",	FILFIFO,UNOP},
+	{"-u",	FILSUID,UNOP},
+	{"-g",	FILSGID,UNOP},
+	{"-k",	FILSTCK,UNOP},
+	{"-s",	FILGZ,	UNOP},
+	{"-t",	FILTT,	UNOP},
+	{"-z",	STREZ,	UNOP},
+	{"-n",	STRNZ,	UNOP},
+	{"-h",	FILSYM,	UNOP},		/* for backwards compat */
+	{"-O",	FILUID,	UNOP},
+	{"-G",	FILGID,	UNOP},
+	{"-L",	FILSYM,	UNOP},
+	{"-S",	FILSOCK,UNOP},
+	{"=",	STREQ,	BINOP},
+	{"!=",	STRNE,	BINOP},
+	{"<",	STRLT,	BINOP},
+	{">",	STRGT,	BINOP},
+	{"-eq",	INTEQ,	BINOP},
+	{"-ne",	INTNE,	BINOP},
+	{"-ge",	INTGE,	BINOP},
+	{"-gt",	INTGT,	BINOP},
+	{"-le",	INTLE,	BINOP},
+	{"-lt",	INTLT,	BINOP},
+	{"-nt",	FILNT,	BINOP},
+	{"-ot",	FILOT,	BINOP},
+	{"-ef",	FILEQ,	BINOP},
+	{"!",	UNOT,	BUNOP},
+	{"-a",	BAND,	BBINOP},
+	{"-o",	BOR,	BBINOP},
+	{"(",	LPAREN,	PAREN},
+	{")",	RPAREN,	PAREN},
+	{0,	0,	0}
+};
+
+//static char **t_wp;
+//static struct t_op const *t_wp_op;
+
+static void syntax(shinstance *, const char *, const char *);
+static int oexpr(shinstance *, enum token);
+static int aexpr(shinstance *, enum token);
+static int nexpr(shinstance *, enum token);
+static int primary(shinstance *, enum token);
+static int binop(shinstance *);
+static int filstat(shinstance *, char *, enum token);
+static enum token t_lex(shinstance *, char *);
+static int isoperand(shinstance *);
+static int getn(shinstance *, const char *);
+static int newerf(shinstance *, const char *, const char *);
+static int olderf(shinstance *, const char *, const char *);
+static int equalf(shinstance *, const char *, const char *);
+
+
+int
+testcmd(shinstance *psh, int argc, char **argv)
+{
+	int res;
+
+	if (strcmp(argv[0], "[") == 0) {
+		if (strcmp(argv[--argc], "]"))
+			error(psh, "missing ]");
+		argv[argc] = NULL;
+	}
+
+	if (argc < 2)
+		return 1;
+
+	psh->t_wp_op = NULL;
+	psh->t_wp = &argv[1];
+	res = !oexpr(psh, t_lex(psh, *psh->t_wp));
+
+	if (*psh->t_wp != NULL && *++psh->t_wp != NULL)
+		syntax(psh, *psh->t_wp, "unexpected operator");
+
+	return res;
+}
+
+static void
+syntax(shinstance *psh, const char *op, const char *msg)
+{
+
+	if (op && *op)
+		error(psh, "%s: %s", op, msg);
+	else
+		error(psh, "%s", msg);
+}
+
+static int
+oexpr(shinstance *psh, enum token n)
+{
+	int res;
+
+	res = aexpr(psh, n);
+	if (t_lex(psh, *++psh->t_wp) == BOR)
+		return oexpr(psh, t_lex(psh, *++psh->t_wp)) || res;
+	psh->t_wp--;
+	return res;
+}
+
+static int
+aexpr(shinstance *psh, enum token n)
+{
+	int res;
+
+	res = nexpr(psh, n);
+	if (t_lex(psh, *++psh->t_wp) == BAND)
+		return aexpr(psh, t_lex(psh, *++psh->t_wp)) && res;
+	psh->t_wp--;
+	return res;
+}
+
+static int
+nexpr(shinstance *psh, enum token n)
+{
+
+	if (n == UNOT)
+		return !nexpr(psh, t_lex(psh, *++psh->t_wp));
+	return primary(psh, n);
+}
+
+static int
+primary(shinstance *psh, enum token n)
+{
+	enum token nn;
+	int res;
+
+	if (n == EOI)
+		return 0;		/* missing expression */
+	if (n == LPAREN) {
+		if ((nn = t_lex(psh, *++psh->t_wp)) == RPAREN)
+			return 0;	/* missing expression */
+		res = oexpr(psh, nn);
+		if (t_lex(psh, *++psh->t_wp) != RPAREN)
+			syntax(psh, NULL, "closing paren expected");
+		return res;
+	}
+	if (psh->t_wp_op && psh->t_wp_op->op_type == UNOP) {
+		/* unary expression */
+		if (*++psh->t_wp == NULL)
+			syntax(psh, psh->t_wp_op->op_text, "argument expected");
+		switch (n) {
+		case STREZ:
+			return strlen(*psh->t_wp) == 0;
+		case STRNZ:
+			return strlen(*psh->t_wp) != 0;
+		case FILTT:
+			return shfile_isatty(&psh->fdtab, getn(psh, *psh->t_wp));
+		default:
+			return filstat(psh, *psh->t_wp, n);
+		}
+	}
+
+	if (t_lex(psh, psh->t_wp[1]), psh->t_wp_op && psh->t_wp_op->op_type == BINOP) {
+		return binop(psh);
+	}
+
+	return strlen(*psh->t_wp) > 0;
+}
+
+static int
+binop(shinstance *psh)
+{
+	const char *opnd1, *opnd2;
+	struct t_op const *op;
+
+	opnd1 = *psh->t_wp;
+	(void) t_lex(psh, *++psh->t_wp);
+	op = psh->t_wp_op;
+
+	if ((opnd2 = *++psh->t_wp) == NULL)
+		syntax(psh, op->op_text, "argument expected");
+
+	switch (op->op_num) {
+	case STREQ:
+		return strcmp(opnd1, opnd2) == 0;
+	case STRNE:
+		return strcmp(opnd1, opnd2) != 0;
+	case STRLT:
+		return strcmp(opnd1, opnd2) < 0;
+	case STRGT:
+		return strcmp(opnd1, opnd2) > 0;
+	case INTEQ:
+		return getn(psh, opnd1) == getn(psh, opnd2);
+	case INTNE:
+		return getn(psh, opnd1) != getn(psh, opnd2);
+	case INTGE:
+		return getn(psh, opnd1) >= getn(psh, opnd2);
+	case INTGT:
+		return getn(psh, opnd1) > getn(psh, opnd2);
+	case INTLE:
+		return getn(psh, opnd1) <= getn(psh, opnd2);
+	case INTLT:
+		return getn(psh, opnd1) < getn(psh, opnd2);
+	case FILNT:
+		return newerf(psh, opnd1, opnd2);
+	case FILOT:
+		return olderf(psh, opnd1, opnd2);
+	case FILEQ:
+		return equalf(psh, opnd1, opnd2);
+	default:
+		sh_abort(psh);
+		/* NOTREACHED */
+		return -1;
+	}
+}
+
+static int
+filstat(shinstance *psh, char *nm, enum token mode)
+{
+	struct stat s;
+
+	if (mode == FILSYM
+		? shfile_lstat(&psh->fdtab, nm, &s)
+		: shfile_stat(&psh->fdtab, nm, &s))
+		return 0;
+
+	switch (mode) {
+	case FILRD:
+		return shfile_access(&psh->fdtab, nm, R_OK) == 0;
+	case FILWR:
+		return shfile_access(&psh->fdtab, nm, W_OK) == 0;
+	case FILEX:
+		return shfile_access(&psh->fdtab, nm, X_OK) == 0;
+	case FILEXIST:
+		return shfile_access(&psh->fdtab, nm, F_OK) == 0;
+	case FILREG:
+		return S_ISREG(s.st_mode);
+	case FILDIR:
+		return S_ISDIR(s.st_mode);
+	case FILCDEV:
+#ifdef S_ISCHR
+		return S_ISCHR(s.st_mode);
+#else
+        return 0;
+#endif
+	case FILBDEV:
+#ifdef S_ISBLK
+		return S_ISBLK(s.st_mode);
+#else
+        return 0;
+#endif
+	case FILFIFO:
+#ifdef S_ISFIFO
+		return S_ISFIFO(s.st_mode);
+#else
+        return 0;
+#endif
+	case FILSOCK:
+#ifdef S_ISSOCK
+		return S_ISSOCK(s.st_mode);
+#else
+        return 0;
+#endif
+	case FILSYM:
+		return S_ISLNK(s.st_mode);
+	case FILSUID:
+		return (s.st_mode & S_ISUID) != 0;
+	case FILSGID:
+		return (s.st_mode & S_ISGID) != 0;
+	case FILSTCK:
+#ifdef S_ISVTX
+		return (s.st_mode & S_ISVTX) != 0;
+#else
+        return 0;
+#endif
+	case FILGZ:
+		return s.st_size > (off_t)0;
+	case FILUID:
+		return s.st_uid == sh_geteuid(psh);
+	case FILGID:
+		return s.st_gid == sh_getegid(psh);
+	default:
+		return 1;
+	}
+}
+
+static enum token
+t_lex(shinstance *psh, char *s)
+{
+	struct t_op const *op;
+
+	op = ops;
+
+	if (s == 0) {
+		psh->t_wp_op = NULL;
+		return EOI;
+	}
+	while (op->op_text) {
+		if (strcmp(s, op->op_text) == 0) {
+			if ((op->op_type == UNOP && isoperand(psh)) ||
+			    (op->op_num == LPAREN && *(psh->t_wp+1) == 0))
+				break;
+			psh->t_wp_op = op;
+			return op->op_num;
+		}
+		op++;
+	}
+	psh->t_wp_op = NULL;
+	return OPERAND;
+}
+
+static int
+isoperand(shinstance *psh)
+{
+	struct t_op const *op;
+	char *s, *t;
+
+	op = ops;
+	if ((s  = *(psh->t_wp+1)) == 0)
+		return 1;
+	if ((t = *(psh->t_wp+2)) == 0)
+		return 0;
+	while (op->op_text) {
+		if (strcmp(s, op->op_text) == 0)
+	    		return op->op_type == BINOP &&
+	    		    (t[0] != ')' || t[1] != '\0');
+		op++;
+	}
+	return 0;
+}
+
+/* atoi with error detection */
+static int
+getn(shinstance *psh, const char *s)
+{
+	char *p;
+	long r;
+
+	errno = 0;
+	r = strtol(s, &p, 10);
+
+	if (errno != 0)
+	      error(psh, "%s: out of range", s);
+
+	while (isspace((unsigned char)*p))
+	      p++;
+
+	if (*p)
+	      error(psh, "%s: bad number", s);
+
+	return (int) r;
+}
+
+static int
+newerf(shinstance *psh, const char *f1, const char *f2)
+{
+	struct stat b1, b2;
+
+	return (shfile_stat(&psh->fdtab, f1, &b1) == 0 &&
+		shfile_stat(&psh->fdtab, f2, &b2) == 0 &&
+		b1.st_mtime > b2.st_mtime);
+}
+
+static int
+olderf(shinstance *psh, const char *f1, const char *f2)
+{
+	struct stat b1, b2;
+
+	return (shfile_stat(&psh->fdtab, f1, &b1) == 0 &&
+		shfile_stat(&psh->fdtab, f2, &b2) == 0 &&
+		b1.st_mtime < b2.st_mtime);
+}
+
+static int
+equalf(shinstance *psh, const char *f1, const char *f2)
+{
+	struct stat b1, b2;
+
+	return (shfile_stat(&psh->fdtab, f1, &b1) == 0 &&
+		shfile_stat(&psh->fdtab, f2, &b2) == 0 &&
+		b1.st_dev == b2.st_dev &&
+		b1.st_ino == b2.st_ino);
+}
diff --git a/src/kash/builtins.def b/src/kash/builtins.def
new file mode 100644
index 0000000..bd38c33
--- /dev/null
+++ b/src/kash/builtins.def
@@ -0,0 +1,92 @@
+#!/bin/sh -
+#	$NetBSD: builtins.def,v 1.21 2004/07/13 15:05:59 seb Exp $
+#
+# Copyright (c) 1991, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)builtins.def	8.4 (Berkeley) 5/4/95
+
+#
+# This file lists all the builtin commands.  The first column is the name
+# of a C routine.
+# The -j flag specifies that this command is to be excluded from systems
+# without job control.
+# The -h flag specifies that this command is to be excluded from systems
+# based on the SMALL compile-time symbol.
+# The -s flag specifies that this is a posix 'special builtin' command.
+# The -u flag specifies that this is a posix 'standard utility'.
+# The rest of the line specifies the command name or names used to run
+# the command.
+
+bltincmd	-u command
+bgcmd -j	-u bg
+breakcmd	-s break -s continue
+cdcmd		-u cd chdir
+dotcmd		-s .
+echocmd		echo
+evalcmd		-s eval
+execcmd		-s exec
+exitcmd		-s exit
+expcmd		exp let
+exportcmd	-s export -s readonly
+falsecmd	-u false
+histcmd -h	-u fc
+inputrc		inputrc
+fgcmd -j	-u fg
+getoptscmd	-u getopts
+hashcmd		hash
+jobidcmd	jobid
+jobscmd		-u jobs
+localcmd	local
+#ifndef SMALL
+printfcmd	printf
+#endif
+pwdcmd		-u pwd
+readcmd		-u read
+returncmd	-s return
+setcmd		-s set
+setvarcmd	setvar
+shiftcmd	-s shift
+timescmd	-s times
+trapcmd		-s trap
+truecmd		-s : -u true
+typecmd		type
+umaskcmd	-u umask
+unaliascmd	-u unalias
+unsetcmd	-s unset
+waitcmd		-u wait
+aliascmd	-u alias
+ulimitcmd	ulimit
+testcmd		test [
+killcmd		-u kill		# mandated by posix for 'kill %job'
+wordexpcmd	wordexp
+#newgrp		-u newgrp	# optional command in posix
+
+#exprcmd	expr
diff --git a/src/kash/cd.c b/src/kash/cd.c
new file mode 100644
index 0000000..49fd157
--- /dev/null
+++ b/src/kash/cd.c
@@ -0,0 +1,445 @@
+/*	$NetBSD: cd.c,v 1.34 2003/11/14 20:00:28 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)cd.c	8.2 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: cd.c,v 1.34 2003/11/14 20:00:28 dsl Exp $");
+#endif /* not lint */
+#endif
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+/*
+ * The cd and pwd commands.
+ */
+
+#include "shell.h"
+#include "var.h"
+#include "nodes.h"	/* for jobs.h */
+#include "jobs.h"
+#include "options.h"
+#include "output.h"
+#include "memalloc.h"
+#include "error.h"
+#include "exec.h"
+#include "redir.h"
+#include "mystring.h"
+#include "show.h"
+#include "cd.h"
+#include "shinstance.h"
+
+STATIC int docd(shinstance *psh, char *, int);
+STATIC char *getcomponent(shinstance *psh);
+STATIC void updatepwd(shinstance *psh, char *);
+STATIC void find_curdir(shinstance *psh, int noerror);
+
+/*char *curdir = NULL;*/		/* current working directory */
+/*char *prevdir;*/			/* previous working directory */
+/*STATIC char *cdcomppath;*/
+
+int
+cdcmd(shinstance *psh, int argc, char **argv)
+{
+	const char *dest;
+	const char *path;
+	char *p, *d;
+	struct stat statb;
+	int print = cdprint(psh);	/* set -cdprint to enable */
+
+	nextopt(psh, nullstr);
+
+	/*
+	 * Try (quite hard) to have 'curdir' defined, nothing has set
+	 * it on entry to the shell, but we want 'cd fred; cd -' to work.
+	 */
+	getpwd(psh, 1);
+	dest = *psh->argptr;
+	if (dest == NULL) {
+		dest = bltinlookup(psh, "HOME", 1);
+		if (dest == NULL)
+			error(psh, "HOME not set");
+	} else {
+		if (psh->argptr[1]) {
+			/* Do 'ksh' style substitution */
+			if (!psh->curdir)
+				error(psh, "PWD not set");
+			p = strstr(psh->curdir, dest);
+			if (!p)
+				error(psh, "bad substitution");
+			d = stalloc(psh, strlen(psh->curdir) + strlen(psh->argptr[1]) + 1);
+			memcpy(d, psh->curdir, p - psh->curdir);
+			strcpy(d + (p - psh->curdir), psh->argptr[1]);
+			strcat(d, p + strlen(dest));
+			dest = d;
+			print = 1;
+		}
+	}
+
+	if (dest[0] == '-' && dest[1] == '\0') {
+		dest = psh->prevdir ? psh->prevdir : psh->curdir;
+		print = 1;
+	}
+	if (*dest == '\0')
+	        dest = ".";
+	if (IS_ROOT(dest) || (path = bltinlookup(psh, "CDPATH", 1)) == NULL)
+		path = nullstr;
+	while ((p = padvance(psh, &path, dest)) != NULL) {
+		if (shfile_stat(&psh->fdtab, p, &statb) >= 0 && S_ISDIR(statb.st_mode)) {
+			if (!print) {
+				/*
+				 * XXX - rethink
+				 */
+				if (p[0] == '.' && p[1] == '/' && p[2] != '\0')
+					p += 2;
+				print = strcmp(p, dest);
+			}
+			if (docd(psh, p, print) >= 0)
+				return 0;
+
+		}
+	}
+	error(psh, "can't cd to %s", dest);
+	/* NOTREACHED */
+        return 1;
+}
+
+
+/*
+ * Actually do the chdir.  In an interactive shell, print the
+ * directory name if "print" is nonzero.
+ */
+
+STATIC int
+docd(shinstance *psh, char *dest, int print)
+{
+	char *p;
+	char *q;
+	char *component;
+	struct stat statb;
+	int first;
+	int badstat;
+
+	TRACE((psh, "docd(\"%s\", %d) called\n", dest, print));
+
+	/*
+	 *  Check each component of the path. If we find a symlink or
+	 *  something we can't stat, clear curdir to force a getcwd()
+	 *  next time we get the value of the current directory.
+	 */
+	badstat = 0;
+	psh->cdcomppath = stalloc(psh, strlen(dest) + 1);
+	scopy(dest, psh->cdcomppath);
+	STARTSTACKSTR(psh, p);
+	if (IS_ROOT(dest)) {
+		STPUTC(psh, '/', p);
+		psh->cdcomppath++;
+	}
+	first = 1;
+	while ((q = getcomponent(psh)) != NULL) {
+		if (q[0] == '\0' || (q[0] == '.' && q[1] == '\0'))
+			continue;
+		if (! first)
+			STPUTC(psh, '/', p);
+		first = 0;
+		component = q;
+		while (*q)
+			STPUTC(psh, *q++, p);
+		if (equal(component, ".."))
+			continue;
+		STACKSTRNUL(psh, p);
+		if ((shfile_lstat(&psh->fdtab, stackblock(psh), &statb) < 0)
+		    || (S_ISLNK(statb.st_mode)))  {
+			/* print = 1; */
+			badstat = 1;
+			break;
+		}
+	}
+
+	INTOFF;
+	if (shfile_chdir(&psh->fdtab, dest) < 0) {
+		INTON;
+		return -1;
+	}
+	updatepwd(psh, badstat ? NULL : dest);
+	INTON;
+	if (print && iflag(psh) && psh->curdir)
+		out1fmt(psh, "%s\n", psh->curdir);
+	return 0;
+}
+
+
+/*
+ * Get the next component of the path name pointed to by psh->cdcomppath.
+ * This routine overwrites the string pointed to by psh->cdcomppath.
+ */
+
+STATIC char *
+getcomponent(shinstance *psh)
+{
+	char *p;
+	char *start;
+
+	if ((p = psh->cdcomppath) == NULL)
+		return NULL;
+	start = psh->cdcomppath;
+	while (*p != '/' && *p != '\0')
+		p++;
+	if (*p == '\0') {
+		psh->cdcomppath = NULL;
+	} else {
+		*p++ = '\0';
+		psh->cdcomppath = p;
+	}
+	return start;
+}
+
+
+
+/*
+ * Update curdir (the name of the current directory) in response to a
+ * cd command.  We also call hashcd to let the routines in exec.c know
+ * that the current directory has changed.
+ */
+
+STATIC void
+updatepwd(shinstance *psh, char *dir)
+{
+	char *new;
+	char *p;
+
+	hashcd(psh);				/* update command hash table */
+
+	/*
+	 * If our argument is NULL, we don't know the current directory
+	 * any more because we traversed a symbolic link or something
+	 * we couldn't stat().
+	 */
+	if (dir == NULL || psh->curdir == NULL)  {
+		if (psh->prevdir)
+			ckfree(psh, psh->prevdir);
+		INTOFF;
+		psh->prevdir = psh->curdir;
+		psh->curdir = NULL;
+		getpwd(psh, 1);
+		INTON;
+		if (psh->curdir)
+			setvar(psh, "PWD", psh->curdir, VEXPORT);
+		else
+			unsetvar(psh, "PWD", 0);
+		return;
+	}
+	psh->cdcomppath = stalloc(psh, strlen(dir) + 1);
+	scopy(dir, psh->cdcomppath);
+	STARTSTACKSTR(psh, new);
+	if (!IS_ROOT(dir)) {
+		p = psh->curdir;
+		while (*p)
+			STPUTC(psh, *p++, new);
+		if (p[-1] == '/')
+			STUNPUTC(psh, new);
+	}
+	while ((p = getcomponent(psh)) != NULL) {
+		if (equal(p, "..")) {
+			while (new > stackblock(psh) && (STUNPUTC(psh, new), *new) != '/');
+		} else if (*p != '\0' && ! equal(p, ".")) {
+			STPUTC(psh, '/', new);
+			while (*p)
+				STPUTC(psh, *p++, new);
+		}
+	}
+	if (new == stackblock(psh))
+		STPUTC(psh, '/', new);
+	STACKSTRNUL(psh, new);
+	INTOFF;
+	if (psh->prevdir)
+		ckfree(psh, psh->prevdir);
+	psh->prevdir = psh->curdir;
+	psh->curdir = savestr(psh, stackblock(psh));
+	setvar(psh, "PWD", psh->curdir, VEXPORT);
+	INTON;
+}
+
+/*
+ * Posix says the default should be 'pwd -L' (as below), however
+ * the 'cd' command (above) does something much nearer to the
+ * posix 'cd -P' (not the posix default of 'cd -L').
+ * If 'cd' is changed to support -P/L then the default here
+ * needs to be revisited if the historic behaviour is to be kept.
+ */
+
+int
+pwdcmd(shinstance *psh, int argc, char **argv)
+{
+	int i;
+	char opt = 'L';
+
+	while ((i = nextopt(psh, "LP")) != '\0')
+		opt = i;
+	if (*psh->argptr)
+		error(psh, "unexpected argument");
+
+	if (opt == 'L')
+		getpwd(psh, 0);
+	else
+		find_curdir(psh, 0);
+
+	setvar(psh, "PWD", psh->curdir, VEXPORT);
+	out1str(psh, psh->curdir);
+	out1c(psh, '\n');
+	return 0;
+}
+
+
+
+
+#define MAXPWD 256
+
+/*
+ * Find out what the current directory is. If we already know the current
+ * directory, this routine returns immediately.
+ */
+const char *
+getpwd(shinstance *psh, int noerror)
+{
+	char *pwd;
+	struct stat stdot, stpwd;
+	/*static int first = 1;*/
+
+	if (psh->curdir)
+		return psh->curdir;
+
+	if (psh->getpwd_first) {
+		psh->getpwd_first = 0;
+		pwd = sh_getenv(psh, "PWD");
+		if (pwd && IS_ROOT(pwd) && shfile_stat(&psh->fdtab, ".", &stdot) != -1 &&
+		    shfile_stat(&psh->fdtab, pwd, &stpwd) != -1 &&
+		    stdot.st_dev == stpwd.st_dev &&
+		    stdot.st_ino == stpwd.st_ino) {
+			psh->curdir = savestr(psh, pwd);
+			return psh->curdir;
+		}
+	}
+
+	find_curdir(psh, noerror);
+
+	return psh->curdir;
+}
+
+STATIC void
+find_curdir(shinstance *psh, int noerror)
+{
+	int i;
+	char *pwd;
+
+	/*
+	 * Things are a bit complicated here; we could have just used
+	 * getcwd, but traditionally getcwd is implemented using popen
+	 * to /bin/pwd. This creates a problem for us, since we cannot
+	 * keep track of the job if it is being ran behind our backs.
+	 * So we re-implement getcwd(), and we suppress interrupts
+	 * throughout the process. This is not completely safe, since
+	 * the user can still break out of it by killing the pwd program.
+	 * We still try to use getcwd for systems that we know have a
+	 * c implementation of getcwd, that does not open a pipe to
+	 * /bin/pwd.
+	 */
+#if 1 //defined(__NetBSD__) || defined(__SVR4) || defined(__INNOTEK_LIBC__)
+
+	for (i = MAXPWD;; i *= 2) {
+		pwd = stalloc(psh, i);
+		if (shfile_getcwd(&psh->fdtab, pwd, i) != NULL) {
+			psh->curdir = savestr(psh, pwd);
+			return;
+		}
+		stunalloc(psh, pwd);
+		if (errno == ERANGE)
+			continue;
+		if (!noerror)
+			error(psh, "getcwd() failed: %s", sh_strerror(psh, errno));
+		return;
+	}
+#else
+	{
+		char *p;
+		int status;
+		struct job *jp;
+		int pip[2];
+
+		pwd = stalloc(psh, MAXPWD);
+		INTOFF;
+		if (pipe(pip) < 0)
+			error(psh, "Pipe call failed");
+		jp = makejob((union node *)NULL, 1);
+		if (forkshell(jp, (union node *)NULL, FORK_NOJOB) == 0) {
+			(void) close(pip[0]);
+			if (pip[1] != 1) {
+				close(1);
+				copyfd(pip[1], 1);
+				close(pip[1]);
+			}
+			(void) execl("/bin/pwd", "pwd", (char *)0);
+			error(psh, "Cannot exec /bin/pwd");
+		}
+		(void) close(pip[1]);
+		pip[1] = -1;
+		p = pwd;
+		while ((i = read(pip[0], p, pwd + MAXPWD - p)) > 0
+		     || (i == -1 && errno == EINTR)) {
+			if (i > 0)
+				p += i;
+		}
+		(void) close(pip[0]);
+		pip[0] = -1;
+		status = waitforjob(jp);
+		if (status != 0)
+			error(psh, (char *)0);
+		if (i < 0 || p == pwd || p[-1] != '\n') {
+			if (noerror) {
+				INTON;
+				return;
+			}
+			error(psh, "pwd command failed");
+		}
+		p[-1] = '\0';
+		INTON;
+		psh->curdir = savestr(pwd);
+		return;
+	}
+#endif
+}
diff --git a/src/kash/cd.h b/src/kash/cd.h
new file mode 100644
index 0000000..dcb272f
--- /dev/null
+++ b/src/kash/cd.h
@@ -0,0 +1,43 @@
+/*	$NetBSD: cd.h,v 1.4 2003/08/07 09:05:30 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1995
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+const char *getpwd(struct shinstance *, int);
+int	cdcmd(struct shinstance *, int, char **);
+int	pwdcmd(struct shinstance *, int, char **);
+#ifdef PC_DRIVE_LETTERS
+#define IS_ROOT(path) (   *(path) == '/' \
+                       || *(path) == '\\' \
+                       ||  ( ((*(path) >= 'A' && *(path) <= 'Z') || (*(path) >= 'a' && *(path) <= 'z')) \
+                             && (path)[1] == ':') )
+#else
+#define IS_ROOT(path) ( *(path) == '/' )
+#endif
diff --git a/src/kash/error.c b/src/kash/error.c
new file mode 100644
index 0000000..267f8ff
--- /dev/null
+++ b/src/kash/error.c
@@ -0,0 +1,394 @@
+/*	$NetBSD: error.c,v 1.31 2003/08/07 09:05:30 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)error.c	8.2 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: error.c,v 1.31 2003/08/07 09:05:30 agc Exp $");
+#endif /* not lint */
+#endif
+
+/*
+ * Errors and exceptions.
+ */
+
+#include <stdlib.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "shell.h"
+#include "main.h"
+#include "options.h"
+#include "output.h"
+#include "error.h"
+#include "show.h"
+#include "shinstance.h"
+
+
+/*
+ * Code to handle exceptions in C.
+ */
+
+/*struct jmploc *handler;
+int exception;
+volatile int suppressint;
+volatile int intpending;
+char *commandname;*/
+
+SH_NORETURN_1
+static void exverror(shinstance *psh, int, const char *, va_list) SH_NORETURN_2;
+
+/*
+ * Called to raise an exception.  Since C doesn't include exceptions, we
+ * just do a longjmp to the exception handler.  The type of exception is
+ * stored in the global variable "exception".
+ */
+
+SH_NORETURN_1 void
+exraise(shinstance *psh, int e)
+{
+	if (psh->handler == NULL)
+		sh_abort(psh);
+	psh->exception = e;
+	longjmp(psh->handler->loc, 1);
+}
+
+
+/*
+ * Called from trap.c when a SIGINT is received.  (If the user specifies
+ * that SIGINT is to be trapped or ignored using the trap builtin, then
+ * this routine is not called.)  Suppressint is nonzero when interrupts
+ * are held using the INTOFF macro.  The call to _exit is necessary because
+ * there is a short period after a fork before the signal handlers are
+ * set to the appropriate value for the child.  (The test for iflag is
+ * just defensive programming.)
+ */
+
+void
+onint(shinstance *psh)
+{
+	shsigset_t nsigset;
+
+	if (psh->suppressint) {
+		psh->intpending = 1;
+		return;
+	}
+	psh->intpending = 0;
+	sh_sigemptyset(&nsigset);
+	sh_sigprocmask(psh, SIG_SETMASK, &nsigset, NULL);
+	if (psh->rootshell && iflag(psh))
+		exraise(psh, EXINT);
+	else {
+		sh_signal(psh, SIGINT, SH_SIG_DFL);
+		sh_raise_sigint(psh);/*raise(psh, SIGINT);*/
+	}
+	/* NOTREACHED */
+}
+
+static void
+exvwarning(shinstance *psh, int sv_errno, const char *msg, va_list ap)
+{
+	/* Partially emulate line buffered output so that:
+	 *	printf '%d\n' 1 a 2
+	 * and
+	 *	printf '%d %d %d\n' 1 a 2
+	 * both generate sensible text when stdout and stderr are merged.
+	 */
+	if (psh->output.nextc != psh->output.buf && psh->output.nextc[-1] == '\n')
+		flushout(&psh->output);
+	if (psh->commandname)
+		outfmt(&psh->errout, "%s: ", psh->commandname);
+	if (msg != NULL) {
+		doformat(&psh->errout, msg, ap);
+		if (sv_errno >= 0)
+			outfmt(&psh->errout, ": ");
+	}
+	if (sv_errno >= 0)
+		outfmt(&psh->errout, "%s", sh_strerror(psh, sv_errno));
+	out2c(psh, '\n');
+	flushout(&psh->errout);
+}
+
+/*
+ * Exverror is called to raise the error exception.  If the second argument
+ * is not NULL then error prints an error message using printf style
+ * formatting.  It then raises the error exception.
+ */
+static void
+exverror(shinstance *psh, int cond, const char *msg, va_list ap)
+{
+	CLEAR_PENDING_INT;
+	INTOFF;
+
+#ifdef DEBUG
+	if (msg) {
+		va_list va2;
+		TRACE((psh, "exverror(%d, \"", cond));
+# ifdef va_copy /* MSC 2010 still doesn't have va_copy. sigh. */
+		va_copy(va2, ap);
+# else
+		va2 = ap;
+# endif
+		TRACEV((psh, msg, va2));
+		va_end(va2);
+		TRACE((psh, "\") pid=%" SHPID_PRI "\n", sh_getpid(psh)));
+	} else
+		TRACE((psh, "exverror(%d, NULL) pid=%" SHPID_PRI "\n", cond, sh_getpid(psh)));
+#endif
+	if (msg)
+		exvwarning(psh, -1, msg, ap);
+
+	output_flushall(psh);
+	exraise(psh, cond);
+	/* NOTREACHED */
+}
+
+
+SH_NORETURN_1 void
+error(shinstance *psh, const char *msg, ...)
+{
+	va_list ap;
+
+	va_start(ap, msg);
+	exverror(psh, EXERROR, msg, ap);
+	/* NOTREACHED */
+	va_end(ap);
+}
+
+
+SH_NORETURN_1 void
+exerror(shinstance *psh, int cond, const char *msg, ...)
+{
+	va_list ap;
+
+	va_start(ap, msg);
+	exverror(psh, cond, msg, ap);
+	/* NOTREACHED */
+	va_end(ap);
+}
+
+/*
+ * error/warning routines for external builtins
+ */
+
+SH_NORETURN_1 void
+sh_exit(shinstance *psh, int rval)
+{
+	psh->exerrno = rval & 255;
+	exraise(psh, EXEXEC);
+}
+
+SH_NORETURN_1 void
+sh_err(shinstance *psh, int status, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	exvwarning(psh, errno, fmt, ap);
+	va_end(ap);
+	sh_exit(psh, status);
+}
+
+SH_NORETURN_1 void
+sh_verr(shinstance *psh, int status, const char *fmt, va_list ap)
+{
+	exvwarning(psh, errno, fmt, ap);
+	sh_exit(psh, status);
+}
+
+SH_NORETURN_1 void
+sh_errx(shinstance *psh, int status, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	exvwarning(psh, -1, fmt, ap);
+	va_end(ap);
+	sh_exit(psh, status);
+}
+
+SH_NORETURN_1 void
+sh_verrx(shinstance *psh, int status, const char *fmt, va_list ap)
+{
+	exvwarning(psh, -1, fmt, ap);
+	sh_exit(psh, status);
+}
+
+void
+sh_warn(shinstance *psh, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	exvwarning(psh, errno, fmt, ap);
+	va_end(ap);
+}
+
+void
+sh_vwarn(shinstance *psh, const char *fmt, va_list ap)
+{
+	exvwarning(psh, errno, fmt, ap);
+}
+
+void
+sh_warnx(shinstance *psh, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	exvwarning(psh, -1, fmt, ap);
+	va_end(ap);
+}
+
+void
+sh_vwarnx(shinstance *psh, const char *fmt, va_list ap)
+{
+	exvwarning(psh, -1, fmt, ap);
+}
+
+
+/*
+ * Table of error messages.
+ */
+
+struct errname {
+	short errcode;		/* error number */
+	short action;		/* operation which encountered the error */
+	const char *msg;	/* text describing the error */
+};
+
+
+#define ALL (E_OPEN|E_CREAT|E_EXEC)
+
+STATIC const struct errname errormsg[] = {
+	{ EINTR,	ALL,	"interrupted" },
+	{ EACCES,	ALL,	"permission denied" },
+	{ EIO,		ALL,	"I/O error" },
+	{ EEXIST,	ALL,	"file exists" },
+	{ ENOENT,	E_OPEN,	"no such file" },
+	{ ENOENT,	E_CREAT,"directory nonexistent" },
+	{ ENOENT,	E_EXEC,	"not found" },
+	{ ENOTDIR,	E_OPEN,	"no such file" },
+	{ ENOTDIR,	E_CREAT,"directory nonexistent" },
+	{ ENOTDIR,	E_EXEC,	"not found" },
+	{ EISDIR,	ALL,	"is a directory" },
+#ifdef EMFILE
+	{ EMFILE,	ALL,	"too many open files" },
+#endif
+	{ ENFILE,	ALL,	"file table overflow" },
+	{ ENOSPC,	ALL,	"file system full" },
+#ifdef EDQUOT
+	{ EDQUOT,	ALL,	"disk quota exceeded" },
+#endif
+#ifdef ENOSR
+	{ ENOSR,	ALL,	"no streams resources" },
+#endif
+	{ ENXIO,	ALL,	"no such device or address" },
+	{ EROFS,	ALL,	"read-only file system" },
+#ifdef ETXTBSY
+	{ ETXTBSY,	ALL,	"text busy" },
+#endif
+#ifdef EAGAIN
+	{ EAGAIN,	E_EXEC,	"not enough memory" },
+#endif
+	{ ENOMEM,	ALL,	"not enough memory" },
+#ifdef ENOLINK
+	{ ENOLINK,	ALL,	"remote access failed" },
+#endif
+#ifdef EMULTIHOP
+	{ EMULTIHOP,	ALL,	"remote access failed" },
+#endif
+#ifdef ECOMM
+	{ ECOMM,	ALL,	"remote access failed" },
+#endif
+#ifdef ESTALE
+	{ ESTALE,	ALL,	"remote access failed" },
+#endif
+#ifdef ETIMEDOUT
+	{ ETIMEDOUT,	ALL,	"remote access failed" },
+#endif
+#ifdef ELOOP
+	{ ELOOP,	ALL,	"symbolic link loop" },
+#endif
+	{ E2BIG,	E_EXEC,	"argument list too long" },
+#ifdef ELIBACC
+	{ ELIBACC,	E_EXEC,	"shared library missing" },
+#endif
+	{ 0,		0,	NULL },
+};
+
+
+/*
+ * Return a string describing an error.  The returned string may be a
+ * pointer to a static buffer that will be overwritten on the next call.
+ * Action describes the operation that got the error.
+ */
+
+const char *
+errmsg(shinstance *psh, int e, int action)
+{
+	struct errname const *ep;
+	/*static char buf[12];*/
+
+	for (ep = errormsg ; ep->errcode ; ep++) {
+		if (ep->errcode == e && (ep->action & action) != 0)
+			return ep->msg;
+	}
+	fmtstr(psh->errmsg_buf, sizeof psh->errmsg_buf, "error %d", e);
+	return psh->errmsg_buf;
+}
+
+
+#ifdef K_STRICT
+
+KHLP_DECL(void) kHlpAssertMsg1(const char *pszExpr, const char *pszFile, unsigned iLine, const char *pszFunction)
+{
+	shinstance *psh = shthread_get_shell();
+
+	TRACE((psh,  "Assertion failed in %s --- %s --- %s(%u)\n", pszFunction, pszExpr, pszFile, iLine));
+	dprintf(psh, "Assertion failed in %s --- %s --- %s(%u)\n", pszFunction, pszExpr, pszFile, iLine);
+}
+
+KHLP_DECL(void) kHlpAssertMsg2(const char *pszFormat, ...)
+{
+	shinstance *psh = shthread_get_shell();
+	va_list va;
+	va_start(va, pszFormat);
+	doformat(psh->out2, pszFormat, va);
+	va_end(va);
+}
+
+#endif /* K_STRICT */
diff --git a/src/kash/error.h b/src/kash/error.h
new file mode 100644
index 0000000..6388a75
--- /dev/null
+++ b/src/kash/error.h
@@ -0,0 +1,133 @@
+/*	$NetBSD: error.h,v 1.16 2003/08/07 09:05:30 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)error.h	8.2 (Berkeley) 5/4/95
+ */
+
+#ifndef ___error_h
+#define ___error_h
+
+#include "shtypes.h"
+#include <stdarg.h>
+
+/*
+ * Types of operations (passed to the errmsg routine).
+ */
+
+#define E_OPEN 01	/* opening a file */
+#define E_CREAT 02	/* creating a file */
+#define E_EXEC 04	/* executing a program */
+
+
+/*
+ * We enclose jmp_buf in a structure so that we can declare pointers to
+ * jump locations.  The global variable handler contains the location to
+ * jump to when an exception occurs, and the global variable exception
+ * contains a code identifying the exeception.  To implement nested
+ * exception handlers, the user should save the value of handler on entry
+ * to an inner scope, set handler to point to a jmploc structure for the
+ * inner scope, and restore handler on exit from the scope.
+ */
+
+#ifndef __HAIKU__
+# include <setjmp.h>
+#else
+# include <posix/setjmp.h> /** @todo silly */
+#endif
+
+struct jmploc {
+	jmp_buf loc;
+};
+
+/*
+extern struct jmploc *handler;
+extern int exception;
+extern int exerrno;*/	/* error for EXEXEC */
+
+/* exceptions */
+#define EXINT 0		/* SIGINT received */
+#define EXERROR 1	/* a generic error */
+#define EXSHELLPROC 2	/* execute a shell procedure */
+#define EXEXEC 3	/* command execution failed */
+
+
+/*
+ * These macros allow the user to suspend the handling of interrupt signals
+ * over a period of time.  This is similar to SIGHOLD to or sigblock, but
+ * much more efficient and portable.  (But hacking the kernel is so much
+ * more fun than worrying about efficiency and portability. :-))
+ */
+
+/*extern volatile int suppressint;
+extern volatile int intpending;*/
+
+#define INTOFF psh->suppressint++
+#define INTON { if (--psh->suppressint == 0 && psh->intpending) onint(psh); }
+#define FORCEINTON {psh->suppressint = 0; if (psh->intpending) onint(psh);}
+#define CLEAR_PENDING_INT psh->intpending = 0
+#define int_pending() psh->intpending
+
+#if !defined(__GNUC__) && !defined(__attribute__)
+# define __attribute__(a)
+#endif
+
+SH_NORETURN_1 void exraise(struct shinstance *, int) SH_NORETURN_2;
+void onint(struct shinstance *);
+SH_NORETURN_1 void error(struct shinstance *, const char *, ...) SH_NORETURN_2;
+SH_NORETURN_1 void exerror(struct shinstance *, int, const char *, ...) SH_NORETURN_2;
+const char *errmsg(struct shinstance *, int, int);
+
+SH_NORETURN_1 void sh_err(struct shinstance *, int, const char *, ...) SH_NORETURN_2;
+SH_NORETURN_1 void sh_verr(struct shinstance *, int, const char *, va_list) SH_NORETURN_2;
+SH_NORETURN_1 void sh_errx(struct shinstance *, int, const char *, ...) SH_NORETURN_2;
+SH_NORETURN_1 void sh_verrx(struct shinstance *, int, const char *, va_list) SH_NORETURN_2;
+void sh_warn(struct shinstance *, const char *, ...);
+void sh_vwarn(struct shinstance *, const char *, va_list);
+void sh_warnx(struct shinstance *, const char *, ...);
+void sh_vwarnx(struct shinstance *, const char *, va_list);
+
+SH_NORETURN_1 void sh_exit(struct shinstance *, int) SH_NORETURN_2;
+
+
+/*
+ * BSD setjmp saves the signal mask, which violates ANSI C and takes time,
+ * so we use _setjmp instead.
+ */
+
+#if defined(BSD) && !defined(__SVR4) && !defined(__GLIBC__) \
+  && !defined(__KLIBC__) && !defined(_MSC_VER) && !defined(__HAIKU__)
+#define setjmp(jmploc)	_setjmp(jmploc)
+#define longjmp(jmploc, val)	_longjmp(jmploc, val)
+#endif
+
+#endif
diff --git a/src/kash/eval.c b/src/kash/eval.c
new file mode 100644
index 0000000..5cbfac1
--- /dev/null
+++ b/src/kash/eval.c
@@ -0,0 +1,1485 @@
+/*	$NetBSD: eval.c,v 1.84 2005/06/23 23:05:29 christos Exp $	*/
+
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)eval.c	8.9 (Berkeley) 6/8/95";
+#else
+__RCSID("$NetBSD: eval.c,v 1.84 2005/06/23 23:05:29 christos Exp $");
+#endif /* not lint */
+#endif
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/types.h>
+#ifdef HAVE_SYSCTL_H
+# ifdef __OpenBSD__ /* joyful crap */
+#  include <sys/param.h>
+#  undef psh
+# endif
+# include <sys/sysctl.h>
+#endif
+
+/*
+ * Evaluate a command.
+ */
+
+#include "shell.h"
+#include "nodes.h"
+#include "syntax.h"
+#include "expand.h"
+#include "parser.h"
+#include "jobs.h"
+#include "eval.h"
+#include "builtins.h"
+#include "options.h"
+#include "exec.h"
+#include "redir.h"
+#include "input.h"
+#include "output.h"
+#include "trap.h"
+#include "var.h"
+#include "memalloc.h"
+#include "error.h"
+#include "show.h"
+#include "mystring.h"
+#include "main.h"
+#ifndef SMALL
+# include "myhistedit.h"
+#endif
+#include "shinstance.h"
+
+
+/* flags in argument to evaltree */
+#define EV_EXIT 01		/* exit after evaluating tree */
+#define EV_TESTED 02		/* exit status is checked; ignore -e flag */
+#define EV_BACKCMD 04		/* command executing within back quotes */
+
+/*int evalskip;*/			/* set if we are skipping commands */
+/*STATIC int skipcount;*/		/* number of levels to skip */
+/*MKINIT int loopnest;*/		/* current loop nesting level */
+/*int funcnest;*/			/* depth of function calls */
+
+
+/*char *commandname;*/
+/*struct strlist *cmdenviron;*/
+/*int exitstatus;*/			/* exit status of last command */
+/*int back_exitstatus;*/		/* exit status of backquoted command */
+
+
+STATIC void evalloop(shinstance *, union node *, int);
+STATIC void evalfor(shinstance *, union node *, int);
+STATIC void evalcase(shinstance *, union node *, int);
+STATIC void evalsubshell(shinstance *, union node *, int);
+STATIC unsigned expredir(shinstance *, union node *);
+STATIC void evalpipe(shinstance *, union node *);
+STATIC void evalcommand(shinstance *, union node *, int, struct backcmd *);
+STATIC void prehash(shinstance *, union node *);
+
+
+/*
+ * Called to reset things after an exception.
+ */
+
+#ifdef mkinit
+INCLUDE "eval.h"
+
+RESET {
+	psh->evalskip = 0;
+	psh->loopnest = 0;
+	psh->funcnest = 0;
+}
+
+SHELLPROC {
+	psh->exitstatus = 0;
+}
+#endif
+
+static int
+sh_pipe(shinstance *psh, int fds[2])
+{
+	int nfd;
+
+	if (shfile_pipe(&psh->fdtab, fds))
+		return -1;
+
+	if (fds[0] < 3) {
+		nfd = shfile_fcntl(&psh->fdtab, fds[0], F_DUPFD, 3);
+		if (nfd != -1) {
+			shfile_close(&psh->fdtab, fds[0]);
+			fds[0] = nfd;
+		}
+	}
+
+	if (fds[1] < 3) {
+		nfd = shfile_fcntl(&psh->fdtab, fds[1], F_DUPFD, 3);
+		if (nfd != -1) {
+			shfile_close(&psh->fdtab, fds[1]);
+			fds[1] = nfd;
+		}
+	}
+	return 0;
+}
+
+
+/*
+ * The eval commmand.
+ */
+
+int
+evalcmd(shinstance *psh, int argc, char **argv)
+{
+	char *p;
+	char *concat;
+	char **ap;
+
+	if (argc > 1) {
+		p = argv[1];
+		if (argc > 2) {
+			STARTSTACKSTR(psh, concat);
+			ap = argv + 2;
+			for (;;) {
+				while (*p)
+					STPUTC(psh, *p++, concat);
+				if ((p = *ap++) == NULL)
+					break;
+				STPUTC(psh, ' ', concat);
+			}
+			STPUTC(psh, '\0', concat);
+			p = grabstackstr(psh, concat);
+		}
+		evalstring(psh, p, EV_TESTED);
+	}
+	return psh->exitstatus;
+}
+
+
+/*
+ * Execute a command or commands contained in a string.
+ */
+
+void
+evalstring(shinstance *psh, char *s, int flag)
+{
+	union node *n;
+	struct stackmark smark;
+
+	setstackmark(psh, &smark);
+	setinputstring(psh, s, 1);
+
+	while ((n = parsecmd(psh, 0)) != NEOF) {
+		evaltree(psh, n, flag);
+		popstackmark(psh, &smark);
+	}
+	popfile(psh);
+	popstackmark(psh, &smark);
+}
+
+
+
+/*
+ * Evaluate a parse tree.  The value is left in the global variable
+ * exitstatus.
+ */
+
+void
+evaltree(shinstance *psh, union node *n, int flags)
+{
+	if (n == NULL) {
+		TRACE((psh, "evaltree(NULL) called\n"));
+		psh->exitstatus = 0;
+		goto out;
+	}
+#ifndef SMALL
+	psh->displayhist = 1;	/* show history substitutions done with fc */
+#endif
+	TRACE((psh, "pid %" SHPID_PRI ", evaltree(%p: %d, %d) called\n",
+	       sh_getpid(psh), n, n->type, flags));
+	switch (n->type) {
+	case NSEMI:
+		evaltree(psh, n->nbinary.ch1, flags & EV_TESTED);
+		if (psh->evalskip)
+			goto out;
+		evaltree(psh, n->nbinary.ch2, flags);
+		break;
+	case NAND:
+		evaltree(psh, n->nbinary.ch1, EV_TESTED);
+		if (psh->evalskip || psh->exitstatus != 0)
+			goto out;
+		evaltree(psh, n->nbinary.ch2, flags);
+		break;
+	case NOR:
+		evaltree(psh, n->nbinary.ch1, EV_TESTED);
+		if (psh->evalskip || psh->exitstatus == 0)
+			goto out;
+		evaltree(psh, n->nbinary.ch2, flags);
+		break;
+	case NREDIR: {
+		unsigned const oldfnames = expredir(psh, n->nredir.redirect);
+		redirect(psh, n->nredir.redirect, REDIR_PUSH);
+		evaltree(psh, n->nredir.n, flags);
+		popredir(psh);
+		expredircleanup(psh, oldfnames);
+		break;
+	}
+	case NSUBSHELL:
+		evalsubshell(psh, n, flags);
+		break;
+	case NBACKGND:
+		evalsubshell(psh, n, flags);
+		break;
+	case NIF: {
+		evaltree(psh, n->nif.test, EV_TESTED);
+		if (psh->evalskip)
+			goto out;
+		if (psh->exitstatus == 0)
+			evaltree(psh, n->nif.ifpart, flags);
+		else if (n->nif.elsepart)
+			evaltree(psh, n->nif.elsepart, flags);
+		else
+			psh->exitstatus = 0;
+		break;
+	}
+	case NWHILE:
+	case NUNTIL:
+		evalloop(psh, n, flags);
+		break;
+	case NFOR:
+		evalfor(psh, n, flags);
+		break;
+	case NCASE:
+		evalcase(psh, n, flags);
+		break;
+	case NDEFUN:
+		defun(psh, n->narg.text, n->narg.next);
+		psh->exitstatus = 0;
+		break;
+	case NNOT:
+		evaltree(psh, n->nnot.com, EV_TESTED);
+		psh->exitstatus = !psh->exitstatus;
+		break;
+	case NPIPE:
+		evalpipe(psh, n);
+		break;
+	case NCMD:
+		evalcommand(psh, n, flags, (struct backcmd *)NULL);
+		break;
+	default:
+		out1fmt(psh, "Node type = %d\n", n->type);
+		flushout(&psh->output);
+		break;
+	}
+out:
+	if (psh->pendingsigs)
+		dotrap(psh);
+	if ((flags & EV_EXIT) != 0)
+		exitshell(psh, psh->exitstatus);
+}
+
+
+STATIC void
+evalloop(shinstance *psh, union node *n, int flags)
+{
+	int status;
+
+	psh->loopnest++;
+	status = 0;
+	for (;;) {
+		evaltree(psh, n->nbinary.ch1, EV_TESTED);
+		if (psh->evalskip) {
+skipping:	  if (psh->evalskip == SKIPCONT && --psh->skipcount <= 0) {
+				psh->evalskip = 0;
+				continue;
+			}
+			if (psh->evalskip == SKIPBREAK && --psh->skipcount <= 0)
+				psh->evalskip = 0;
+			break;
+		}
+		if (n->type == NWHILE) {
+			if (psh->exitstatus != 0)
+				break;
+		} else {
+			if (psh->exitstatus == 0)
+				break;
+		}
+		evaltree(psh, n->nbinary.ch2, flags & EV_TESTED);
+		status = psh->exitstatus;
+		if (psh->evalskip)
+			goto skipping;
+	}
+	psh->loopnest--;
+	psh->exitstatus = status;
+}
+
+
+
+STATIC void
+evalfor(shinstance *psh, union node *n, int flags)
+{
+	struct arglist arglist;
+	union node *argp;
+	struct strlist *sp;
+	struct stackmark smark;
+	int status = 0;
+
+	setstackmark(psh, &smark);
+	arglist.lastp = &arglist.list;
+	for (argp = n->nfor.args ; argp ; argp = argp->narg.next) {
+		expandarg(psh, argp, &arglist, EXP_FULL | EXP_TILDE);
+		if (psh->evalskip)
+			goto out;
+	}
+	*arglist.lastp = NULL;
+
+	psh->loopnest++;
+	for (sp = arglist.list ; sp ; sp = sp->next) {
+		setvar(psh, n->nfor.var, sp->text, 0);
+		evaltree(psh, n->nfor.body, flags & EV_TESTED);
+		status = psh->exitstatus;
+		if (psh->evalskip) {
+			if (psh->evalskip == SKIPCONT && --psh->skipcount <= 0) {
+				psh->evalskip = 0;
+				continue;
+			}
+			if (psh->evalskip == SKIPBREAK && --psh->skipcount <= 0)
+				psh->evalskip = 0;
+			break;
+		}
+	}
+	psh->loopnest--;
+	psh->exitstatus = status;
+out:
+	popstackmark(psh, &smark);
+}
+
+
+
+STATIC void
+evalcase(shinstance *psh, union node *n, int flags)
+{
+	union node *cp;
+	union node *patp;
+	struct arglist arglist;
+	struct stackmark smark;
+	int status = 0;
+
+	setstackmark(psh, &smark);
+	arglist.lastp = &arglist.list;
+	expandarg(psh, n->ncase.expr, &arglist, EXP_TILDE);
+	for (cp = n->ncase.cases ; cp && psh->evalskip == 0 ; cp = cp->nclist.next) {
+		for (patp = cp->nclist.pattern ; patp ; patp = patp->narg.next) {
+			if (casematch(psh, patp, arglist.list->text)) {
+				if (psh->evalskip == 0) {
+					evaltree(psh, cp->nclist.body, flags);
+					status = psh->exitstatus;
+				}
+				goto out;
+			}
+		}
+	}
+out:
+	psh->exitstatus = status;
+	popstackmark(psh, &smark);
+}
+
+
+#ifdef KASH_USE_FORKSHELL2
+/*
+ * Child of evalsubshell.
+ */
+struct evalsubshellchild
+{
+    int flags;
+    int backgnd;
+};
+
+static int evalsubshell_child(shinstance *psh, union node *n, void *argp)
+{
+    struct evalsubshellchild args = *(struct evalsubshellchild *)argp;
+
+    INTON;
+    if (args.backgnd)
+	    args.flags &=~ EV_TESTED;
+    redirect(psh, n->nredir.redirect, 0);
+    /* never returns */
+    evaltree(psh, n->nredir.n, args.flags | EV_EXIT);
+    /** @todo make us return here. */
+    return 0;
+}
+#endif /* KASH_USE_FORKSHELL2 */
+
+
+/*
+ * Kick off a subshell to evaluate a tree.
+ */
+
+STATIC void
+evalsubshell(shinstance *psh, union node *n, int flags)
+{
+	struct job *jp;
+	int backgnd = (n->type == NBACKGND);
+	unsigned expfnamedepth;
+
+	expfnamedepth = expredir(psh, n->nredir.redirect);
+	INTOFF;
+	jp = makejob(psh, n, 1);
+#ifdef KASH_USE_FORKSHELL2
+	{
+		struct evalsubshellchild args;
+		args.flags = flags;
+		args.backgnd = backgnd;
+		forkshell2(psh, jp, n, backgnd ? FORK_BG : FORK_FG,
+		           evalsubshell_child, n, &args, sizeof(args), NULL);
+	}
+#else
+	if (forkshell(psh, jp, n, backgnd ? FORK_BG : FORK_FG) == 0) {
+		INTON;
+		if (backgnd)
+			flags &=~ EV_TESTED;
+		redirect(psh, n->nredir.redirect, 0);
+		/* never returns */
+		evaltree(psh, n->nredir.n, flags | EV_EXIT);
+	}
+#endif
+	if (! backgnd)
+		psh->exitstatus = waitforjob(psh, jp);
+	expredircleanup(psh, expfnamedepth);
+	INTON;
+}
+
+
+
+/*
+ * Compute the names of the files in a redirection list.
+ */
+
+STATIC unsigned
+expredir(shinstance *psh, union node *n)
+{
+	union node *redir;
+	redirexpfnames *expfnames;
+	unsigned i;
+
+	/* We typically end up here w/o redirections. */
+	if (!n)
+	    return !(expfnames = psh->expfnames) ? 0 : expfnames->depth + 1;
+
+	/* Prepare a table for the expanded names. */
+	i = 0;
+	for (redir = n; redir ; redir = redir->nfile.next)
+	    i++;
+	expfnames = stalloc(psh, offsetof(redirexpfnames, names) +  sizeof(expfnames->names[0]) * i);
+	expfnames->count = i;
+	TRACE2((psh, "expredir: %p: count=%u\n", expfnames, i));
+
+	/* Do the expansion. */
+	for (redir = n, i = 0 ; redir ; redir = redir->nfile.next, i++) {
+		struct arglist fn;
+		fn.lastp = &fn.list;
+		switch (redir->type) {
+		case NFROMTO:
+		case NFROM:
+		case NTO:
+		case NCLOBBER:
+		case NAPPEND:
+			expandarg(psh, redir->nfile.fname, &fn, EXP_TILDE | EXP_REDIR);
+			expfnames->names[i] = fn.list->text;
+			break;
+		case NFROMFD:
+		case NTOFD:
+			if (redir->ndup.vname) {
+				expandarg(psh, redir->ndup.vname, &fn, EXP_FULL | EXP_TILDE);
+				fixredir(psh, redir, fn.list->text, 1);
+			}
+			expfnames->names[i] = NULL;
+			break;
+		default:
+			kHlpAssert(redir->type == NHERE || redir->type == NXHERE);
+			expfnames->names[i] = NULL;
+			break;
+		}
+	}
+	kHlpAssert(i == expfnames->count);
+
+	/* Do the linking at the end, as nesting happens when we expand backtick arguments. */
+	expfnames->prev = psh->expfnames;
+	psh->expfnames = expfnames;
+	return expfnames->depth = psh->expfnames ? psh->expfnames->depth + 1 : 1;
+}
+
+STATIC void
+expredircleanup(shinstance *psh, unsigned depth)
+{
+	redirexpfnames *expfnames = psh->expfnames;
+	kHlpAssert(expfnames == NULL ? depth == 0 : expfnames->depth == depth || expfnames->depth + 1 == depth);
+	while (expfnames && expfnames->depth >= depth)
+	    expfnames = psh->expfnames = expfnames->prev;
+}
+
+
+#ifdef KASH_USE_FORKSHELL2
+/*
+ * Child of evalpipe.
+ */
+struct evalpipechild
+{
+	int prevfd;
+	int pip[2];
+};
+
+static int evalpipe_child(shinstance *psh, union node *n, void *argp)
+{
+	struct evalpipechild args = *(struct evalpipechild *)argp;
+
+	if (args.prevfd > 0) {
+		movefd(psh, args.prevfd, 0);
+	}
+	if (args.pip[1] >= 0) {
+		shfile_close(&psh->fdtab, args.pip[0]);
+		if (args.pip[1] != 1) {
+			movefd(psh, args.pip[1], 1);
+		}
+	}
+	evaltree(psh, n, EV_EXIT);
+	/** @todo make it return thru here. */
+	return 0;
+}
+#endif /* KASH_USE_FORKSHELL2 */
+
+/*
+ * Evaluate a pipeline.  All the processes in the pipeline are children
+ * of the process creating the pipeline.  (This differs from some versions
+ * of the shell, which make the last process in a pipeline the parent
+ * of all the rest.)
+ */
+
+STATIC void
+evalpipe(shinstance *psh, union node *n)
+{
+	struct job *jp;
+	struct nodelist *lp;
+	int pipelen;
+	int prevfd;
+	int pip[2];
+
+	TRACE((psh, "evalpipe(0x%lx) called\n", (long)n));
+	pipelen = 0;
+	for (lp = n->npipe.cmdlist ; lp ; lp = lp->next)
+		pipelen++;
+	INTOFF;
+	jp = makejob(psh, n, pipelen);
+	prevfd = -1;
+	for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) {
+		prehash(psh, lp->n);
+		pip[1] = -1;
+		if (lp->next) {
+			if (sh_pipe(psh, pip) < 0) {
+				shfile_close(&psh->fdtab, prevfd);
+				error(psh, "Pipe call failed");
+			}
+		}
+#ifdef KASH_USE_FORKSHELL2
+		{
+			struct evalpipechild args;
+			args.prevfd = prevfd;
+			args.pip[0] = pip[0];
+			args.pip[1] = pip[1];
+			forkshell2(psh, jp, lp->n, n->npipe.backgnd ? FORK_BG : FORK_FG,
+			           evalpipe_child, lp->n, &args, sizeof(args), NULL);
+		}
+#else
+		if (forkshell(psh, jp, lp->n, n->npipe.backgnd ? FORK_BG : FORK_FG) == 0) {
+			INTON;
+			if (prevfd > 0) {
+				movefd(psh, prevfd, 0);
+			}
+			if (pip[1] >= 0) {
+				shfile_close(&psh->fdtab, pip[0]);
+				if (pip[1] != 1) {
+					movefd(psh, pip[1], 1);
+				}
+			}
+			evaltree(psh, lp->n, EV_EXIT);
+		}
+#endif
+		if (prevfd >= 0)
+			shfile_close(&psh->fdtab, prevfd);
+		prevfd = pip[0];
+		shfile_close(&psh->fdtab, pip[1]);
+	}
+	if (n->npipe.backgnd == 0) {
+		psh->exitstatus = waitforjob(psh, jp);
+		TRACE((psh, "evalpipe:  job done exit status %d\n", psh->exitstatus));
+	}
+	INTON;
+}
+
+#ifdef KASH_USE_FORKSHELL2
+/*
+ * evalbackcmd child.
+ */
+struct evalbackcmdchild
+{
+	int pip[2];
+};
+
+static int evalbackcmd_child(shinstance *psh, union node *n, void *argp)
+{
+	struct evalbackcmdchild args = *(struct evalbackcmdchild *)argp;
+
+	FORCEINTON;
+	shfile_close(&psh->fdtab, args.pip[0]);
+	if (args.pip[1] != 1) {
+		movefd(psh, args.pip[1], 1);
+	}
+	eflag(psh) = 0;
+	evaltree(psh, n, EV_EXIT);
+	/* NOTREACHED */ /** @todo make it return here to simplify thread handling (no need for setjmp). */
+	return 0;
+}
+#endif /* KASH_USE_FORKSHELL2 */
+
+/*
+ * Execute a command inside back quotes.  If it's a builtin command, we
+ * want to save its output in a block obtained from malloc.  Otherwise
+ * we fork off a subprocess and get the output of the command via a pipe.
+ * Should be called with interrupts off.
+ */
+
+void
+evalbackcmd(shinstance *psh, union node *n, struct backcmd *result)
+{
+	int pip[2];
+	struct job *jp;
+	struct stackmark smark;		/* unnecessary */
+
+	setstackmark(psh, &smark);
+	result->fd = -1;
+	result->buf = NULL;
+	result->nleft = 0;
+	result->jp = NULL;
+	if (n == NULL) {
+		goto out;
+	}
+#ifdef notyet
+	/*
+	 * For now we disable executing builtins in the same
+	 * context as the shell, because we are not keeping
+	 * enough state to recover from changes that are
+	 * supposed only to affect subshells. eg. echo "`cd /`"
+	 */
+	if (n->type == NCMD) {
+		psh->exitstatus = opsh->exitstatus;
+		evalcommand(psh, n, EV_BACKCMD, result);
+	} else
+#endif
+	{
+		INTOFF;
+		if (sh_pipe(psh, pip) < 0)
+			error(psh, "Pipe call failed");
+		jp = makejob(psh, n, 1);
+#ifdef KASH_USE_FORKSHELL2
+		{
+			struct evalbackcmdchild args;
+			args.pip[0] = pip[0];
+			args.pip[1] = pip[1];
+			forkshell2(psh, jp, n, FORK_NOJOB,
+			           evalbackcmd_child, n, &args, sizeof(args), NULL);
+		}
+#else
+		if (forkshell(psh, jp, n, FORK_NOJOB) == 0) {
+			FORCEINTON;
+			shfile_close(&psh->fdtab, pip[0]);
+			if (pip[1] != 1) {
+				movefd(psh, pip[1], 1);
+			}
+			eflag(psh) = 0;
+			evaltree(psh, n, EV_EXIT);
+			/* NOTREACHED */
+		}
+#endif
+		shfile_close(&psh->fdtab, pip[1]);
+		result->fd = pip[0];
+		result->jp = jp;
+		INTON;
+	}
+out:
+	popstackmark(psh, &smark);
+	TRACE((psh, "evalbackcmd done: fd=%d buf=0x%x nleft=%d jp=0x%x\n",
+		result->fd, result->buf, result->nleft, result->jp));
+}
+
+static const char *
+syspath(shinstance *psh)
+{
+#ifdef CTL_USER
+	static char *sys_path = NULL;
+	static int mib[] = {CTL_USER, USER_CS_PATH};
+#endif
+#ifdef PC_PATH_SEP
+	static char def_path[] = "PATH=/usr/bin;/bin;/usr/sbin;/sbin";
+#else
+	static char def_path[] = "PATH=/usr/bin:/bin:/usr/sbin:/sbin";
+#endif
+#ifdef CTL_USER
+	size_t len;
+
+	if (sys_path == NULL) {
+		if (sysctl(mib, 2, 0, &len, 0, 0) != -1 &&
+		    (sys_path = ckmalloc(psh, len + 5)) != NULL &&
+		    sysctl(mib, 2, sys_path + 5, &len, 0, 0) != -1) {
+			memcpy(sys_path, "PATH=", 5);
+		} else {
+			ckfree(psh, sys_path);
+			/* something to keep things happy */
+			sys_path = def_path;
+		}
+	}
+	return sys_path;
+#else
+	return def_path;
+#endif
+}
+
+static int
+parse_command_args(shinstance *psh, int argc, char **argv, int *use_syspath)
+{
+	int sv_argc = argc;
+	char *cp, c;
+
+	*use_syspath = 0;
+
+	for (;;) {
+		argv++;
+		if (--argc == 0)
+			break;
+		cp = *argv;
+		if (*cp++ != '-')
+			break;
+		if (*cp == '-' && cp[1] == 0) {
+			argv++;
+			argc--;
+			break;
+		}
+		while ((c = *cp++)) {
+			switch (c) {
+			case 'p':
+				*use_syspath = 1;
+				break;
+			default:
+				/* run 'typecmd' for other options */
+				return 0;
+			}
+		}
+	}
+	return sv_argc - argc;
+}
+
+
+/*
+ * The split up evalcommand code:
+ *      evalcommand_out, evalcommand_parent, evalcommand_doit, evalcommand_child
+ */
+/*int vforked = 0; - obsolete */
+
+/* Both child and parent exits thru here. */
+STATIC void
+evalcommand_out(shinstance *psh, int flags, char *lastarg, unsigned expfnamedepth, struct stackmark *smarkp)
+{
+	if (lastarg)
+		/* dsl: I think this is intended to be used to support
+		 * '_' in 'vi' command mode during line editing...
+		 * However I implemented that within libedit itself.
+		 */
+		setvar(psh, "_", lastarg, 0);
+	expredircleanup(psh, expfnamedepth);
+	popstackmark(psh, smarkp);
+
+	if (eflag(psh) && psh->exitstatus && !(flags & EV_TESTED))
+		exitshell(psh, psh->exitstatus);
+}
+
+
+/* Called if we forkshell(). */
+STATIC void
+evalcommand_parent(shinstance *psh, int flags, char *lastarg, unsigned expfnamedepth, struct stackmark *smarkp,
+		   int mode, struct job *jp, int pip[2], struct backcmd *backcmd)
+{
+	if (mode == FORK_FG) {	/* argument to fork */
+		psh->exitstatus = waitforjob(psh, jp);
+	} else if (mode == FORK_NOJOB) {
+		backcmd->fd = pip[0];
+		shfile_close(&psh->fdtab, pip[1]);
+		backcmd->jp = jp;
+	}
+	FORCEINTON;
+
+	evalcommand_out(psh, flags, lastarg, expfnamedepth, smarkp);
+}
+
+struct evalcommanddoit
+{
+	struct stackmark smark;
+	unsigned expfnamedepth;
+
+	struct backcmd *backcmd;
+	int flags;
+	int argc;
+	char **argv;
+	char *lastarg;
+	struct arglist varlist;
+	const char *path;
+	struct cmdentry cmdentry;
+
+	/* for child stuff only: */
+	int pip[2];
+};
+
+STATIC void
+evalcommand_doit(shinstance *psh, union node *cmd, struct evalcommanddoit *args)
+{
+	struct jmploc jmploc;
+	struct jmploc *volatile savehandler;
+	struct localvar *volatile savelocalvars;
+
+	/* This is the child process if a fork occurred. */
+	/* Execute the command. */
+	switch (args->cmdentry.cmdtype) {
+		case CMDFUNCTION: {
+			volatile struct shparam saveparam;
+#ifdef DEBUG
+			trputs(psh, "Shell function:  ");  trargs(psh, args->argv);
+#endif
+			redirect(psh, cmd->ncmd.redirect, REDIR_PUSH);
+			saveparam = psh->shellparam;
+			psh->shellparam.malloc = 0;
+			psh->shellparam.reset = 1;
+			psh->shellparam.nparam = args->argc - 1;
+			psh->shellparam.p = args->argv + 1;
+			psh->shellparam.optnext = NULL;
+			INTOFF;
+			savelocalvars = psh->localvars;
+			psh->localvars = NULL;
+			INTON;
+			if (setjmp(jmploc.loc)) {
+				if (psh->exception == EXSHELLPROC) {
+					freeparam(psh, (volatile struct shparam *)
+						&saveparam);
+				} else {
+					freeparam(psh, &psh->shellparam);
+					psh->shellparam = saveparam;
+				}
+				poplocalvars(psh);
+				psh->localvars = savelocalvars;
+				psh->handler = savehandler;
+				longjmp(psh->handler->loc, 1);
+			}
+			savehandler = psh->handler;
+			psh->handler = &jmploc;
+			listmklocal(psh, args->varlist.list, 0);
+			/* stop shell blowing its stack */
+			if (++psh->funcnest > 1000)
+				error(psh, "too many nested function calls");
+			evaltree(psh, args->cmdentry.u.func, args->flags & EV_TESTED);
+			psh->funcnest--;
+			INTOFF;
+			poplocalvars(psh);
+			psh->localvars = savelocalvars;
+			freeparam(psh, &psh->shellparam);
+			psh->shellparam = saveparam;
+			psh->handler = savehandler;
+			popredir(psh);
+			INTON;
+			if (psh->evalskip == SKIPFUNC) {
+				psh->evalskip = 0;
+				psh->skipcount = 0;
+			}
+			if (args->flags & EV_EXIT)
+				exitshell(psh, psh->exitstatus);
+			break;
+		}
+
+		case CMDBUILTIN:
+		case CMDSPLBLTIN: {
+			volatile int temp_path = 0;
+			char *volatile savecmdname;
+			int volatile savecmdnamemalloc;
+			volatile int e;
+			int mode;
+#ifdef DEBUG
+			trputs(psh, "builtin command:  ");  trargs(psh, args->argv);
+#endif
+			mode = (args->cmdentry.u.bltin == execcmd) ? 0 : REDIR_PUSH;
+			if (args->flags == EV_BACKCMD) {
+				psh->memout.nleft = 0;
+				psh->memout.nextc = psh->memout.buf;
+				psh->memout.bufsize = 64;
+				mode |= REDIR_BACKQ;
+			}
+			e = -1;
+			savehandler = psh->handler;
+			savecmdname = psh->commandname;
+			savecmdnamemalloc = psh->commandnamemalloc;
+			psh->handler = &jmploc;
+			if (!setjmp(jmploc.loc)) {
+				/* We need to ensure the command hash table isn't
+				 * corruped by temporary PATH assignments.
+				 * However we must ensure the 'local' command works!
+				 */
+				if (args->path != pathval(psh) && (args->cmdentry.u.bltin == hashcmd ||
+					args->cmdentry.u.bltin == typecmd)) {
+					savelocalvars = psh->localvars;
+					psh->localvars = 0;
+					mklocal(psh, args->path - 5 /* PATH= */, 0);
+					temp_path = 1;
+				} else
+					temp_path = 0;
+				redirect(psh, cmd->ncmd.redirect, mode);
+
+				/* exec is a special builtin, but needs this list... */
+				psh->cmdenviron = args->varlist.list;
+				/* we must check 'readonly' flag for all builtins */
+				listsetvar(psh, args->varlist.list,
+					args->cmdentry.cmdtype == CMDSPLBLTIN ? 0 : VNOSET);
+				psh->commandnamemalloc = 0;
+				psh->commandname = args->argv[0];
+				/* initialize nextopt */
+				psh->argptr = args->argv + 1;
+				psh->optptr = NULL;
+				/* and getopt */
+#if 0 /** @todo fix getop usage! */
+#if defined(__FreeBSD__) || defined(__EMX__) || defined(__APPLE__)
+				optreset = 1;
+				optind = 1;
+#else
+				optind = 0; /* init */
+#endif
+#endif
+
+				psh->exitstatus = args->cmdentry.u.bltin(psh, args->argc, args->argv);
+			} else {
+				e = psh->exception;
+				psh->exitstatus = e == EXINT ? SIGINT + 128 :
+						e == EXEXEC ? psh->exerrno : 2;
+			}
+			psh->handler = savehandler;
+			output_flushall(psh);
+			psh->out1 = &psh->output;
+			psh->out2 = &psh->errout;
+			freestdout(psh);
+			if (temp_path) {
+				poplocalvars(psh);
+				psh->localvars = savelocalvars;
+			}
+			psh->cmdenviron = NULL;
+			if (e != EXSHELLPROC) {
+				psh->commandname = savecmdname;
+				psh->commandnamemalloc = savecmdnamemalloc;
+				if (args->flags & EV_EXIT)
+					exitshell(psh, psh->exitstatus);
+			}
+			else if (savecmdnamemalloc)
+				sh_free(psh, savecmdname);
+			if (e != -1) {
+				if ((e != EXERROR && e != EXEXEC)
+					|| args->cmdentry.cmdtype == CMDSPLBLTIN)
+					exraise(psh, e);
+				FORCEINTON;
+			}
+			if (args->cmdentry.u.bltin != execcmd)
+				popredir(psh);
+			if (args->flags == EV_BACKCMD) {
+				args->backcmd->buf = psh->memout.buf;
+				args->backcmd->nleft = (int)(psh->memout.nextc - psh->memout.buf);
+				psh->memout.buf = NULL;
+			}
+			break;
+		}
+
+		default: {
+			struct strlist *sp;
+			char **envp;
+#ifdef DEBUG
+			trputs(psh, "normal command:  ");  trargs(psh, args->argv);
+#endif
+			clearredir(psh);
+			redirect(psh, cmd->ncmd.redirect, 0);
+			for (sp = args->varlist.list ; sp ; sp = sp->next)
+                                setvareq(psh, sp->text, VEXPORT|VSTACK);
+			envp = environment(psh);
+			shellexec(psh, args->argv, envp, args->path,
+			          args->cmdentry.u.n.index, args->cmdentry.u.n.suffix);
+			break;
+		}
+	}
+
+	evalcommand_out(psh, args->flags, args->lastarg, args->expfnamedepth, &args->smark);
+}
+
+/* child callback. */
+static int evalcommand_child(shinstance *psh, union node *cmd, void *argp)
+{
+	struct evalcommanddoit *args = (struct evalcommanddoit *)argp;
+
+	if (args->flags & EV_BACKCMD) {
+		FORCEINTON;
+		shfile_close(&psh->fdtab, args->pip[0]);
+		if (args->pip[1] != 1) {
+			movefd(psh, args->pip[1], 1);
+		}
+	}
+	args->flags |= EV_EXIT;
+
+	evalcommand_doit(psh, cmd, args);
+	/* not reached */  /** @todo make it return here */
+	return 0;
+}
+
+#ifdef KASH_USE_FORKSHELL2
+/* Copies data in the argument structure from parent to child. */
+static void evalcommand_setup_child(shinstance *pshchild, shinstance *pshparent, void *argp)
+{
+	struct evalcommanddoit *args = (struct evalcommanddoit *)argp;
+	char **argv;
+	char **srcargv;
+	struct strlist *sp;
+	int argc, i;
+
+	setstackmark(pshchild, &args->smark);
+
+	/* copy arguments. */
+	srcargv = args->argv;
+	argc = args->argc;
+	args->argv = argv = stalloc(pshchild, sizeof(char *) * (argc + 1));
+	for (i = 0; i < argc; i++)
+		argv[i] = stsavestr(pshchild, srcargv[i]);
+	argv[argc] = NULL;
+	if (args->lastarg)
+		args->lastarg = argv[argc - 1];
+
+	/* copy variable list, checking for the 'path'. */
+	sp = args->varlist.list;
+	args->varlist.list = NULL;
+	args->varlist.lastp = &args->varlist.list;
+	for (; sp; sp = sp->next) {
+		struct strlist *snew = (struct strlist *)stalloc(pshchild, sizeof(*snew));
+		char *text;
+		snew->next = NULL;
+		snew->text = text = stsavestr(pshchild, sp->text);
+
+		if (&text[5] == args->path)
+			args->path = &text[sizeof("PATH=") - 1];
+
+		*args->varlist.lastp = snew;
+		args->varlist.lastp = &snew->next;
+	}
+
+	if (args->path == pathval(pshparent))
+		args->path = pathval(pshchild);
+
+	/* back tick command should be ignored in this codepath
+	   (flags != EV_BACKCMD as EV_EXIT is ORed in). */
+
+	/* If cmdentry references an internal function, we must duplicates (reference) it's nodes. */
+	if (args->cmdentry.cmdtype == CMDFUNCTION)
+		args->cmdentry.u.func = copyparsetree(pshchild, args->cmdentry.u.func); /** @todo isn't this duplicated already? */
+}
+#endif /* KASH_USE_FORKSHELL2 */
+
+/*
+ * Execute a simple command.
+ */
+
+STATIC void
+evalcommand(shinstance *psh, union node *cmd, int flags, struct backcmd *backcmd)
+{
+	struct evalcommanddoit args;
+	char **argv;
+	int argc;
+
+	union node *argp;
+	int numvars;
+	struct arglist arglist;
+	struct strlist *sp;
+	const char *path = pathval(psh);
+
+	/* First expand the arguments. */
+	TRACE((psh, "evalcommand(0x%lx, %d) called\n", (long)cmd, flags));
+	setstackmark(psh, &args.smark);
+	psh->back_exitstatus = 0;
+
+	arglist.lastp = &arglist.list;
+	/* Expand arguments, ignoring the initial 'name=value' ones */
+	for (argp = cmd->ncmd.args, numvars = 0 ; argp ; argp = argp->narg.next, numvars++) {
+	    char *p = argp->narg.text;
+	    char ch = *p;
+	    if (is_name(ch)) {
+		    do	ch = *++p;
+		    while (is_in_name(ch));
+		    if (ch == '=')
+			    continue;
+	    }
+	    break;
+	}
+	for (/*continue on argp from above. */ ; argp ; argp = argp->narg.next)
+		expandarg(psh, argp, &arglist, EXP_FULL | EXP_TILDE);
+	*arglist.lastp = NULL;
+
+	args.expfnamedepth = expredir(psh, cmd->ncmd.redirect);
+
+	/* Now do the initial 'name=value' ones we skipped above */
+	args.varlist.lastp = &args.varlist.list;
+	for (argp = cmd->ncmd.args ; numvars > 0 && argp ; argp = argp->narg.next, numvars--)
+		expandarg(psh, argp, &args.varlist, EXP_VARTILDE);
+	*args.varlist.lastp = NULL;
+
+	argc = 0;
+	for (sp = arglist.list ; sp ; sp = sp->next)
+		argc++;
+	args.argc = argc;
+	args.argv = argv = stalloc(psh, sizeof (char *) * (argc + 1));
+
+	for (sp = arglist.list ; sp ; sp = sp->next) {
+		TRACE((psh, "evalcommand arg: %s\n", sp->text));
+		*argv++ = sp->text;
+	}
+	*argv = NULL;
+	args.lastarg = NULL;
+	if (iflag(psh) && psh->funcnest == 0 && argc > 0)
+		args.lastarg = argv[-1];
+	argv -= argc;
+
+	/* Print the command if xflag is set. */
+	if (xflag(psh)) {
+		char sep = 0;
+		out2str(psh, ps4val(psh));
+		for (sp = args.varlist.list ; sp ; sp = sp->next) {
+			if (sep != 0)
+				outc(sep, &psh->errout);
+			out2str(psh, sp->text);
+			sep = ' ';
+		}
+		for (sp = arglist.list ; sp ; sp = sp->next) {
+			if (sep != 0)
+				outc(sep, &psh->errout);
+			out2str(psh, sp->text);
+			sep = ' ';
+		}
+		outc('\n', &psh->errout);
+		flushout(&psh->errout);
+	}
+
+	/* Now locate the command. */
+	if (argc == 0) {
+		args.cmdentry.cmdtype = CMDSPLBLTIN;
+		args.cmdentry.u.bltin = bltincmd;
+	} else {
+		static const char PATH[] = "PATH=";
+		int cmd_flags = DO_ERR;
+
+		/*
+		 * Modify the command lookup path, if a PATH= assignment
+		 * is present
+		 */
+		for (sp = args.varlist.list; sp; sp = sp->next)
+			if (strncmp(sp->text, PATH, sizeof(PATH) - 1) == 0)
+				path = sp->text + sizeof(PATH) - 1;
+
+		do {
+			int argsused, use_syspath;
+			find_command(psh, argv[0], &args.cmdentry, cmd_flags, path);
+			if (args.cmdentry.cmdtype == CMDUNKNOWN) {
+				psh->exitstatus = 127;
+				flushout(&psh->errout);
+				evalcommand_out(psh, flags, args.lastarg, args.expfnamedepth, &args.smark);
+				return;
+			}
+
+			/* implement the 'command' builtin here */
+			if (args.cmdentry.cmdtype != CMDBUILTIN ||
+			    args.cmdentry.u.bltin != bltincmd)
+				break;
+			cmd_flags |= DO_NOFUNC;
+			argsused = parse_command_args(psh, argc, argv, &use_syspath);
+			if (argsused == 0) {
+				/* use 'type' builting to display info */
+				args.cmdentry.u.bltin = typecmd;
+				break;
+			}
+			argc -= argsused;
+			argv += argsused;
+			if (use_syspath)
+				path = syspath(psh) + 5;
+		} while (argc != 0);
+		if (args.cmdentry.cmdtype == CMDSPLBLTIN && cmd_flags & DO_NOFUNC)
+			/* posix mandates that 'command <splbltin>' act as if
+			   <splbltin> was a normal builtin */
+			args.cmdentry.cmdtype = CMDBUILTIN;
+	}
+
+	/* Fork off a child process if necessary. */
+	if (cmd->ncmd.backgnd
+	 || (args.cmdentry.cmdtype == CMDNORMAL && (flags & EV_EXIT) == 0)
+	 || (  (flags & EV_BACKCMD) != 0
+	    && (  (args.cmdentry.cmdtype != CMDBUILTIN && args.cmdentry.cmdtype != CMDSPLBLTIN)
+		   || args.cmdentry.u.bltin == dotcmd
+		   || args.cmdentry.u.bltin == evalcmd))) {
+		struct job *jp;
+		int mode;
+
+		INTOFF;
+		jp = makejob(psh, cmd, 1);
+		mode = cmd->ncmd.backgnd;
+		args.pip[0] = -1;
+		args.pip[1] = -1;
+		if (flags & EV_BACKCMD) {
+			mode = FORK_NOJOB;
+			if (sh_pipe(psh, args.pip) < 0)
+				error(psh, "Pipe call failed");
+		}
+
+		args.backcmd = backcmd;
+		args.flags = flags;
+		args.path = path;
+#ifdef KASH_USE_FORKSHELL2
+		forkshell2(psh, jp, cmd, mode, evalcommand_child, cmd,
+		           &args, sizeof(args), evalcommand_setup_child);
+		evalcommand_parent(psh, flags, args.lastarg, args.expfnamedepth,
+				   &args.smark, mode, jp, args.pip, backcmd);
+#else
+		if (forkshell(psh, jp, cmd, mode) != 0) {
+			evalcommand_parent(psh, flags, args.lastarg, args.expfnamedepth,
+			                   &args.smark, mode, jp, args.pip, backcmd);
+			return;	/* at end of routine */
+		}
+		evalcommand_child(psh, cmd, &args);
+#endif
+	} else {
+		args.backcmd = backcmd;
+		args.flags = flags;
+		args.path = path;
+		evalcommand_doit(psh, cmd, &args);
+	}
+}
+
+
+/*
+ * Search for a command.  This is called before we fork so that the
+ * location of the command will be available in the parent as well as
+ * the child.  The check for "goodname" is an overly conservative
+ * check that the name will not be subject to expansion.
+ */
+
+STATIC void
+prehash(shinstance *psh, union node *n)
+{
+	struct cmdentry entry;
+
+	if (n->type == NCMD && n->ncmd.args)
+		if (goodname(n->ncmd.args->narg.text))
+			find_command(psh, n->ncmd.args->narg.text, &entry, 0,
+				         pathval(psh));
+}
+
+
+
+/*
+ * Builtin commands.  Builtin commands whose functions are closely
+ * tied to evaluation are implemented here.
+ */
+
+/*
+ * No command given.
+ */
+
+int
+bltincmd(shinstance *psh, int argc, char **argv)
+{
+	/*
+	 * Preserve psh->exitstatus of a previous possible redirection
+	 * as POSIX mandates
+	 */
+	return psh->back_exitstatus;
+}
+
+
+/*
+ * Handle break and continue commands.  Break, continue, and return are
+ * all handled by setting the psh->evalskip flag.  The evaluation routines
+ * above all check this flag, and if it is set they start skipping
+ * commands rather than executing them.  The variable skipcount is
+ * the number of loops to break/continue, or the number of function
+ * levels to return.  (The latter is always 1.)  It should probably
+ * be an error to break out of more loops than exist, but it isn't
+ * in the standard shell so we don't make it one here.
+ */
+
+int
+breakcmd(shinstance *psh, int argc, char **argv)
+{
+	int n = argc > 1 ? number(psh, argv[1]) : 1;
+
+	if (n > psh->loopnest)
+		n = psh->loopnest;
+	if (n > 0) {
+		psh->evalskip = (**argv == 'c')? SKIPCONT : SKIPBREAK;
+		psh->skipcount = n;
+	}
+	return 0;
+}
+
+
+/*
+ * The return command.
+ */
+
+int
+returncmd(shinstance *psh, int argc, char **argv)
+{
+#if 0
+	int ret = argc > 1 ? number(psh, argv[1]) : psh->exitstatus;
+#else
+	int ret;
+	if (argc > 1)  {
+		/* make return -1 and VSC lite work ... */
+    		if (argv[1][0] != '-' || !is_number(&argv[1][1]))
+			ret = number(psh, argv[1]);
+		else
+			ret = -number(psh, &argv[1][1]) & 255; /* take the bash approach */
+	} else {
+    		ret = psh->exitstatus;
+	}
+#endif
+
+	if (psh->funcnest) {
+		psh->evalskip = SKIPFUNC;
+		psh->skipcount = 1;
+		return ret;
+	}
+	else {
+		/* Do what ksh does; skip the rest of the file */
+		psh->evalskip = SKIPFILE;
+		psh->skipcount = 1;
+		return ret;
+	}
+}
+
+
+int
+falsecmd(shinstance *psh, int argc, char **argv)
+{
+	return 1;
+}
+
+
+int
+truecmd(shinstance *psh, int argc, char **argv)
+{
+	return 0;
+}
+
+
+int
+execcmd(shinstance *psh, int argc, char **argv)
+{
+	if (argc > 1) {
+		struct strlist *sp;
+
+		iflag(psh) = 0;		/* exit on error */
+		mflag(psh) = 0;
+		optschanged(psh);
+		for (sp = psh->cmdenviron; sp; sp = sp->next)
+			setvareq(psh, sp->text, VEXPORT|VSTACK);
+		shellexec(psh, argv + 1, environment(psh), pathval(psh), 0, -1);
+	}
+	return 0;
+}
+
+static int
+conv_time(clock_t ticks, char *seconds, size_t l)
+{
+	static clock_t tpm = 0;
+	clock_t mins;
+	size_t i;
+
+	if (!tpm)
+		tpm = /*sysconf(_SC_CLK_TCK)*/sh_sysconf_clk_tck() * 60;
+
+	mins = ticks / tpm;
+#ifdef _MSC_VER
+	{
+		char tmp[64];
+		sprintf(tmp, "%.4f", (ticks - mins * tpm) * 60.0 / tpm);
+		strlcpy(seconds, tmp, l);
+	}
+#else
+	snprintf(seconds, l, "%.4f", (ticks - mins * tpm) * 60.0 / tpm );
+#endif
+
+	if (seconds[0] == '6' && seconds[1] == '0') {
+		/* 59.99995 got rounded up... */
+		mins++;
+		strlcpy(seconds, "0.0", l);
+		return mins;
+	}
+
+	/* suppress trailing zeros */
+	i = strlen(seconds) - 1;
+	for (; seconds[i] == '0' && seconds[i - 1] != '.'; i--)
+		seconds[i] = 0;
+	return mins;
+}
+
+int
+timescmd(shinstance *psh, int argc, char **argv)
+{
+	shtms tms;
+	int u, s, cu, cs;
+	char us[8], ss[8], cus[8], css[8];
+
+	nextopt(psh, "");
+
+	sh_times(psh, &tms);
+
+	u = conv_time(tms.tms_utime, us, sizeof(us));
+	s = conv_time(tms.tms_stime, ss, sizeof(ss));
+	cu = conv_time(tms.tms_cutime, cus, sizeof(cus));
+	cs = conv_time(tms.tms_cstime, css, sizeof(css));
+
+	outfmt(psh->out1, "%dm%ss %dm%ss\n%dm%ss %dm%ss\n",
+		u, us, s, ss, cu, cus, cs, css);
+
+	return 0;
+}
diff --git a/src/kash/eval.h b/src/kash/eval.h
new file mode 100644
index 0000000..c3f4549
--- /dev/null
+++ b/src/kash/eval.h
@@ -0,0 +1,64 @@
+/*	$NetBSD: eval.h,v 1.14 2003/08/07 09:05:31 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)eval.h	8.2 (Berkeley) 5/4/95
+ */
+
+/*extern char *commandname;*/	/* currently executing command */
+/*extern int exitstatus;*/		/* exit status of last command */
+/*extern int back_exitstatus;*/	/* exit status of backquoted command */
+/*extern struct strlist *cmdenviron;*/  /* environment for builtin command */
+
+
+struct backcmd {		/* result of evalbackcmd */
+	int fd;			/* file descriptor to read from */
+	char *buf;		/* buffer */
+	int nleft;		/* number of chars in buffer */
+	struct job *jp;		/* job structure for command */
+};
+
+void evalstring(struct shinstance *, char *, int);
+union node;	/* BLETCH for ansi C */
+void evaltree(struct shinstance *, union node *, int);
+void evalbackcmd(struct shinstance *, union node *, struct backcmd *);
+
+/* in_function returns nonzero if we are currently evaluating a function */
+#define in_function(psh)	(psh)->funcnest
+/*extern int funcnest;
+extern int evalskip;*/
+
+/* reasons for skipping commands (see comment on breakcmd routine) */
+#define SKIPBREAK	1
+#define SKIPCONT	2
+#define SKIPFUNC	3
+#define SKIPFILE	4
diff --git a/src/kash/exec.c b/src/kash/exec.c
new file mode 100644
index 0000000..ec6d629
--- /dev/null
+++ b/src/kash/exec.c
@@ -0,0 +1,1352 @@
+/*	$NetBSD: exec.c,v 1.37 2003/08/07 09:05:31 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)exec.c	8.4 (Berkeley) 6/8/95";
+#else
+__RCSID("$NetBSD: exec.c,v 1.37 2003/08/07 09:05:31 agc Exp $");
+#endif /* not lint */
+#endif
+
+#include <sys/types.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+
+/*
+ * When commands are first encountered, they are entered in a hash table.
+ * This ensures that a full path search will not have to be done for them
+ * on each invocation.
+ *
+ * We should investigate converting to a linear search, even though that
+ * would make the command name "hash" a misnomer.
+ */
+
+#include "shell.h"
+#include "main.h"
+#include "nodes.h"
+#include "parser.h"
+#include "redir.h"
+#include "eval.h"
+#include "exec.h"
+#include "builtins.h"
+#include "var.h"
+#include "options.h"
+#include "input.h"
+#include "output.h"
+#include "syntax.h"
+#include "memalloc.h"
+#include "error.h"
+#include "init.h"
+#include "mystring.h"
+#include "show.h"
+#include "jobs.h"
+#include "alias.h"
+#ifdef __INNOTEK_LIBC__
+#include <InnoTekLIBC/backend.h>
+#endif
+#include "shinstance.h"
+
+//#define CMDTABLESIZE 31		/* should be prime */
+//#define ARB 1			/* actual size determined at run time */
+//
+//
+//
+//struct tblentry {
+//	struct tblentry *next;	/* next entry in hash chain */
+//	union param param;	/* definition of builtin function */
+//	short cmdtype;		/* index identifying command */
+//	char rehash;		/* if set, cd done since entry created */
+//	char cmdname[ARB];	/* name of command */
+//};
+//
+//
+//STATIC struct tblentry *cmdtable[CMDTABLESIZE];
+//STATIC int builtinloc = -1;		/* index in path of %builtin, or -1 */
+//int exerrno = 0;			/* Last exec error */
+#ifdef PC_EXE_EXTS
+STATIC const char * const g_exe_suffixes[] = { "", ".exe", ".cmd", ".btm", ".com" };
+#endif
+
+
+STATIC void tryexec(shinstance *, char *, char **, char **, int);
+STATIC void execinterp(shinstance *, char **, char **);
+STATIC void printentry(shinstance *, struct tblentry *, int);
+STATIC void clearcmdentry(shinstance *, int);
+STATIC struct tblentry *cmdlookup(shinstance *, const char *, int);
+STATIC void delete_cmd_entry(shinstance *);
+#ifdef PC_EXE_EXTS
+STATIC int stat_pc_exec_exts(shinstance *, char *fullname, int has_ext, int *suffixp);
+#endif
+
+
+extern char *const parsekwd[];
+
+#ifndef SH_FORKED_MODE
+void
+subshellinitexec(shinstance *psh, shinstance *inherit)
+{
+    unsigned i;
+    for (i = 0; i < K_ELEMENTS(inherit->cmdtable); i++) {
+	struct tblentry const *csrc = inherit->cmdtable[i];
+	if (!csrc) {
+	} else {
+	    struct tblentry **ppdst = &psh->cmdtable[i];
+	    do
+	    {
+		size_t const namesize = strlen(csrc->cmdname) + 1;
+		size_t const entrysize = offsetof(struct tblentry, cmdname) + namesize;
+		struct tblentry *dst = (struct tblentry *)ckmalloc(psh, entrysize);
+		memcpy(dst->cmdname, csrc->cmdname, namesize);
+		dst->rehash = csrc->rehash;
+		dst->cmdtype = csrc->cmdtype;
+
+		dst->param.func = NULL;
+		switch (csrc->cmdtype) {
+		case CMDUNKNOWN:
+		case CMDNORMAL:
+		    dst->param.n.index = csrc->param.n.index;
+		    dst->param.n.suffix = csrc->param.n.suffix;
+		    break;
+		case CMDFUNCTION:
+		    dst->param.func = copyfunc(psh, csrc->param.func); /** @todo optimize function allocations */
+		    break;
+		case CMDBUILTIN:
+		case CMDSPLBLTIN:
+		    dst->param.bltin = csrc->param.bltin;
+		    break;
+		}
+
+		*ppdst = dst;
+		ppdst = &dst->next;
+
+		csrc = csrc->next;
+	    } while (csrc);
+	    *ppdst = NULL;
+	}
+    }
+
+    psh->builtinloc = inherit->builtinloc;
+}
+#endif /* SH_FORKED_MODE */
+
+
+/*
+ * Check if 'path' is an absolute (starts with root) path or not.
+ */
+K_INLINE int isabspath(const char *path)
+{
+#if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+	if (path[0] == '/' || path[0] == '\\') {
+		if (   (path[1] == '/' || path[1] == '\\')
+		    && (path[2] != '/' && path[2] != '\\' && path[2]))
+			return 1;
+	} else if (path[0] && path[1] == ':' && (path[2] == '\\' || path[2] == '/') && isalpha(path[0])) {
+		return 1;
+	}
+	return 0;
+#else
+	return path[0] == '/';
+#endif
+}
+
+/*
+ * Checks if the filename include a path or not.
+ */
+K_INLINE int haspath(const char *name)
+{
+#if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+    return strchr(name, '/') != NULL
+	|| strchr(name, '\\') != NULL
+	|| (name[0] && name[1] == ':');
+#else
+    return strchr(name, '/') != NULL;
+#endif
+}
+
+
+/*
+ * Exec a program.  Never returns.  If you change this routine, you may
+ * have to change the find_command routine as well.
+ */
+
+SH_NORETURN_1 void
+shellexec(shinstance *psh, char **argv, char **envp, const char *path, int idx, int suffix)
+{
+	char *cmdname;
+	int e;
+	const char *argv0 = argv[0];
+	int argv0len = (int)strlen(argv0);
+	char kmkcmd[48];
+#ifdef PC_EXE_EXTS
+        int has_ext = argv0len - 4;
+        has_ext = has_ext > 0
+            && argv0[has_ext] == '.'
+            /* use strstr and upper/lower permuated extensions to avoid multiple strcasecmp calls. */
+            && strstr("exe;" "Exe;" "EXe;" "EXE;" "ExE;" "eXe;" "eXE;" "exE;"
+                      "cmd;" "Cmd;" "CMd;" "CMD;" "CmD;" "cMd;" "cMD;" "cmD;"
+                      "com;" "Com;" "COm;" "COM;" "CoM;" "cOm;" "cOM;" "coM;"
+                      "bat;" "Bat;" "BAt;" "BAT;" "BaT;" "bAt;" "bAT;" "baT;"
+                      "btm;" "Btm;" "BTm;" "BTM;" "BtM;" "bTm;" "bTM;" "btM;",
+		      argv0 + has_ext + 1)
+               != NULL;
+#else
+	const int has_ext = 1;
+#endif
+	TRACE((psh, "shellexec: argv[0]=%s idx=%d suffix=%d\n", argv0, idx, suffix));
+	if (haspath(argv0)) {
+#ifdef PC_EXE_EXTS
+		if (!has_ext && suffix && (unsigned)suffix < K_ELEMENTS(g_exe_suffixes)) {
+			size_t sufflen = strlen(g_exe_suffixes[suffix]);
+			cmdname = stalloc(psh, argv0len + sufflen + 1);
+			memcpy(cmdname, argv0, argv0len);
+			memcpy(cmdname + argv0len, g_exe_suffixes[suffix], sufflen + 1);
+			tryexec(psh, cmdname, argv, envp, 1);
+		} else
+#endif
+		{
+			cmdname = stalloc(psh, argv0len + 5);
+			memcpy(cmdname, argv0, argv0len + 1);
+			tryexec(psh, cmdname, argv, envp, has_ext);
+		}
+		TRACE((psh, "shellexec: cmdname=%s\n", cmdname));
+		stunalloc(psh, cmdname);
+		e = errno;
+	} else {
+		/* Before we search the PATH, transform kmk_builtin_% to kmk_% so we don't
+		   need to be too careful mixing internal and external kmk commands. */
+		if (   argv0len > 12
+		    && argv0len < 42
+		    && strncmp(argv0, "kmk_builtin_", 12) == 0
+		    && strpbrk(argv0 + 12, "./\\-:;<>") == NULL) {
+			memcpy(kmkcmd, "kmk_", 4);
+			memcpy(&kmkcmd[4], argv0 + 12, argv0len + 1 - 8);
+			TRACE((psh, "shellexec: dropped '_builtin' from %s to %s\n", argv0, kmkcmd));
+			argv0len -= 8;
+			argv0 = kmkcmd;
+		}
+
+		e = ENOENT;
+		while ((cmdname = padvance(psh, &path, argv0)) != NULL) {
+			if (--idx < 0 && psh->pathopt == NULL) {
+#ifdef PC_EXE_EXTS
+				if (!has_ext && idx == -1 && suffix && (unsigned)suffix < K_ELEMENTS(g_exe_suffixes)) {
+					strcat(cmdname, g_exe_suffixes[suffix]);
+					tryexec(psh, cmdname, argv, envp, 1);
+				} else
+#endif
+					tryexec(psh, cmdname, argv, envp, has_ext);
+				if (errno != ENOENT && errno != ENOTDIR)
+					e = errno;
+			}
+			stunalloc(psh, cmdname);
+		}
+	}
+
+	/* Map to POSIX errors */
+	switch (e) {
+	case EACCES:
+		psh->exerrno = 126;
+		break;
+	case ENOENT:
+		psh->exerrno = 127;
+		break;
+	default:
+		psh->exerrno = 2;
+		break;
+	}
+	TRACE((psh, "shellexec failed for '%s', errno %d, suppressint %d\n",
+		argv[0], e, psh->suppressint ));
+	exerror(psh, EXEXEC, "%s: %s", argv[0], errmsg(psh, e, E_EXEC));
+	/* NOTREACHED */
+}
+
+
+STATIC void
+tryexec(shinstance *psh, char *cmd, char **argv, char **envp, int has_ext)
+{
+	int e;
+#ifdef EXEC_HASH_BANG_SCRIPT
+	char *p;
+#endif
+#ifdef PC_EXE_EXTS
+        /* exploit the effect of stat_pc_exec_exts which adds the
+         * correct extentions to the file. */
+        if (!has_ext) {
+		int suffix;
+		stat_pc_exec_exts(psh, cmd, 0, &suffix);
+	}
+#endif
+#if defined(__INNOTEK_LIBC__) && defined(EXEC_HASH_BANG_SCRIPT)
+	__libc_Back_gfProcessHandleHashBangScripts = 0;
+#endif
+
+#ifdef SYSV
+	do {
+		sh_execve(psh, cmd, argv, envp);
+	} while (errno == EINTR);
+#else
+	sh_execve(psh, cmd, (const char * const*)argv, (const char * const*)envp);
+#endif
+	e = errno;
+	if (e == ENOEXEC) {
+		initshellproc(psh);
+		setinputfile(psh, cmd, 0);
+		if (psh->commandnamemalloc) {
+		    sh_free(psh, psh->commandname);
+		    psh->commandnamemalloc = 0;
+		}
+		if (psh->arg0malloc)
+		    sh_free(psh, psh->arg0);
+		psh->commandname = psh->arg0 = savestr(psh, argv[0]);
+		psh->arg0malloc = 1;
+#ifdef EXEC_HASH_BANG_SCRIPT
+		pgetc(psh); pungetc(psh);		/* fill up input buffer */
+		p = psh->parsenextc;
+		if (psh->parsenleft > 2 && p[0] == '#' && p[1] == '!') {
+			argv[0] = cmd;
+			execinterp(psh, argv, envp);
+		}
+#endif
+		setparam(psh, argv + 1);
+		exraise(psh, EXSHELLPROC);
+	}
+	errno = e;
+}
+
+#ifdef EXEC_HASH_BANG_SCRIPT
+
+/*
+ * Checks if NAME is the (base) name of the shell executable or something
+ * very similar.
+ */
+STATIC int
+is_shell_exe_name(const char *name)
+{
+    return equal(name, "kmk_ash")
+        || equal(name, "kmk_sh")
+	|| equal(name, "kash")
+        || equal(name, "sh");
+}
+
+/*
+ * Execute an interpreter introduced by "#!", for systems where this
+ * feature has not been built into the kernel.  If the interpreter is
+ * the shell, return (effectively ignoring the "#!").  If the execution
+ * of the interpreter fails, exit.
+ *
+ * This code peeks inside the input buffer in order to avoid actually
+ * reading any input.  It would benefit from a rewrite.
+ */
+
+#define NEWARGS 16
+
+STATIC void
+execinterp(shinstance *psh, char **argv, char **envp)
+{
+	int n;
+	char *inp;
+	char *outp;
+	char c;
+	char *p;
+	char **ap;
+	char *newargs[NEWARGS];
+	intptr_t i;
+	char **ap2;
+	char **new;
+
+	/* Split the string into arguments. */
+	n = psh->parsenleft - 2;
+	inp = psh->parsenextc + 2;
+	ap = newargs;
+	for (;;) {
+		while (--n >= 0 && (*inp == ' ' || *inp == '\t'))
+			inp++;
+		if (n < 0)
+			goto bad;
+		if ((c = *inp++) == '\n')
+			break;
+		if (ap == &newargs[NEWARGS])
+bad:		  error(psh, "Bad #! line");
+		STARTSTACKSTR(psh, outp);
+		do {
+			STPUTC(psh, c, outp);
+		} while (--n >= 0 && (c = *inp++) != ' ' && c != '\t' && c != '\n');
+		STPUTC(psh, '\0', outp);
+		n++, inp--;
+		*ap++ = grabstackstr(psh, outp);
+	}
+
+	/* /usr/bin/env emulation, very common with kash/kmk_ash. */
+	i = ap - newargs;
+	if (i > 1 && equal(newargs[0], "/usr/bin/env")) {
+		if (   !strchr(newargs[1], '=')
+		    && newargs[1][0] != '-') {
+		    /* shellexec below searches the PATH for us, so just
+		       drop /usr/bin/env. */
+		    TRACE((psh, "hash bang /usr/bin/env utility, dropping /usr/bin/env\n"));
+		    ap--;
+		    i--;
+		    for (n = 0; n < i; n++)
+			    newargs[n] = newargs[n + 1];
+		} /* else: complicated invocation */
+	}
+
+	/* If the interpreter is the shell or a similar shell, there is
+	   no need to exec. */
+	if (i == 1) {
+		p = strrchr(newargs[0], '/');
+		if (!p)
+			p = newargs[0];
+		if (is_shell_exe_name(p)) {
+			TRACE((psh, "hash bang self\n"));
+			return;
+		}
+	}
+
+	/* Combine the two argument lists and exec. */
+	i = (char *)ap - (char *)newargs;		/* size in bytes */
+	if (i == 0)
+		error(psh, "Bad #! line");
+	for (ap2 = argv ; *ap2++ != NULL ; );
+	new = ckmalloc(psh, i + ((char *)ap2 - (char *)argv));
+	ap = newargs, ap2 = new;
+	while ((i -= sizeof (char **)) >= 0)
+		*ap2++ = *ap++;
+	ap = argv;
+	while ((*ap2++ = *ap++))
+	    /* nothing*/;
+	TRACE((psh, "hash bang '%s'\n", new[0]));
+	shellexec(psh, new, envp, pathval(psh), 0, -1);
+	/* NOTREACHED */
+}
+
+#endif /* EXEC_HASH_BANG_SCRIPT */
+
+
+/*
+ * Do a path search.  The variable path (passed by reference) should be
+ * set to the start of the path before the first call; padvance will update
+ * this value as it proceeds.  Successive calls to padvance will return
+ * the possible path expansions in sequence.  If an option (indicated by
+ * a percent sign) appears in the path entry then the global variable
+ * psh->pathopt will be set to point to it; otherwise psh->pathopt will be set to
+ * NULL.
+ */
+
+//const char *pathopt;
+
+char *
+padvance(shinstance *psh, const char **path, const char *name)
+{
+	const char *p;
+	char *q;
+	const char *start;
+	int len;
+
+	if (*path == NULL)
+		return NULL;
+	start = *path;
+#ifdef PC_PATH_SEP
+	for (p = start ; *p && *p != ';' && *p != '%' ; p++);
+#else
+	for (p = start ; *p && *p != ':' && *p != '%' ; p++);
+#endif
+	len = (int)(p - start + strlen(name) + 2);	/* "2" is for '/' and '\0' */
+#ifdef PC_EXE_EXTS
+        len += 4; /* "4" is for .exe/.com/.cmd/.bat/.btm */
+#endif
+	while (stackblocksize(psh) < len)
+		growstackblock(psh);
+	q = stackblock(psh);
+	if (p != start) {
+		memcpy(q, start, p - start);
+		q += p - start;
+		*q++ = '/';
+	}
+	strcpy(q, name);
+	psh->pathopt = NULL;
+	if (*p == '%') {
+		psh->pathopt = ++p;
+#ifdef PC_PATH_SEP
+		while (*p && *p != ';')  p++;
+#else
+		while (*p && *p != ':')  p++;
+#endif
+	}
+#ifdef PC_PATH_SEP
+	if (*p == ';')
+#else
+	if (*p == ':')
+#endif
+		*path = p + 1;
+	else
+		*path = NULL;
+	return stalloc(psh, len);
+}
+
+
+#ifdef PC_EXE_EXTS
+STATIC int stat_pc_exec_exts(shinstance *psh, char *fullname, int has_ext, int *suffixp)
+{
+    int isreg;
+
+    /* skip the SYSV crap */
+    if ((isreg = shfile_stat_isreg(&psh->fdtab, fullname)) >= 1) {
+	*suffixp = 0;
+        return isreg;
+    }
+    if (!has_ext && errno == ENOENT)
+    {
+	/* Ignore non-regular files here. */
+        char *psz = strchr(fullname, '\0');
+	int i;
+	for (i = 1 /*first entry is empty*/; i < K_ELEMENTS(g_exe_suffixes); i++) {
+	    strcpy(psz, g_exe_suffixes[i]);
+	    if ((isreg = shfile_stat_isreg(&psh->fdtab, fullname)) >= 1) {
+		*suffixp = i;
+		return isreg;
+	    }
+	    if (isreg < 0 && errno != ENOENT && errno != ENOTDIR)
+		break;
+	}
+    }
+    *suffixp = -1;
+    return isreg;
+}
+#endif /* PC_EXE_EXTS */
+
+
+
+/*** Command hashing code ***/
+
+
+int
+hashcmd(shinstance *psh, int argc, char **argv)
+{
+	struct tblentry **pp;
+	struct tblentry *cmdp;
+	int c;
+	int verbose;
+	struct cmdentry entry;
+	char *name;
+
+	verbose = 0;
+	while ((c = nextopt(psh, "rv")) != '\0') {
+		if (c == 'r') {
+			clearcmdentry(psh, 0);
+		} else if (c == 'v') {
+			verbose++;
+		}
+	}
+	if (*psh->argptr == NULL) {
+		for (pp = psh->cmdtable ; pp < &psh->cmdtable[CMDTABLESIZE] ; pp++) {
+			for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) {
+				if (verbose || cmdp->cmdtype == CMDNORMAL)
+					printentry(psh, cmdp, verbose);
+			}
+		}
+		return 0;
+	}
+	while ((name = *psh->argptr) != NULL) {
+		if ((cmdp = cmdlookup(psh, name, 0)) != NULL
+		 && (cmdp->cmdtype == CMDNORMAL
+		     || (cmdp->cmdtype == CMDBUILTIN && psh->builtinloc >= 0)))
+			delete_cmd_entry(psh);
+		find_command(psh, name, &entry, DO_ERR, pathval(psh));
+		if (verbose) {
+			if (entry.cmdtype != CMDUNKNOWN) {	/* if no error msg */
+				cmdp = cmdlookup(psh, name, 0);
+				printentry(psh, cmdp, verbose);
+			}
+			output_flushall(psh);
+		}
+		psh->argptr++;
+	}
+	return 0;
+}
+
+
+STATIC void
+printentry(shinstance *psh, struct tblentry *cmdp, int verbose)
+{
+	int idx;
+	const char *path;
+	char *name;
+
+	switch (cmdp->cmdtype) {
+	case CMDNORMAL:
+		idx = cmdp->param.n.index;
+		path = pathval(psh);
+		do {
+			name = padvance(psh, &path, cmdp->cmdname);
+			stunalloc(psh, name);
+		} while (--idx >= 0);
+		out1str(psh, name);
+#ifdef PC_EXE_EXTS
+		if ((unsigned)cmdp->param.n.suffix < K_ELEMENTS(g_exe_suffixes))
+			out1str(psh, g_exe_suffixes[cmdp->param.n.suffix]);
+#endif
+		break;
+	case CMDSPLBLTIN:
+		out1fmt(psh, "special builtin %s", cmdp->cmdname);
+		break;
+	case CMDBUILTIN:
+		out1fmt(psh, "builtin %s", cmdp->cmdname);
+		break;
+	case CMDFUNCTION:
+		out1fmt(psh, "function %s", cmdp->cmdname);
+		if (verbose) {
+			struct procstat ps;
+			INTOFF;
+			commandtext(psh, &ps, cmdp->param.func);
+			INTON;
+			out1str(psh, "() { ");
+			out1str(psh, ps.cmd);
+			out1str(psh, "; }");
+		}
+		break;
+	default:
+		error(psh, "internal error: %s cmdtype %d", cmdp->cmdname, cmdp->cmdtype);
+	}
+	if (cmdp->rehash)
+		out1c(psh, '*');
+	out1c(psh, '\n');
+}
+
+
+
+/*
+ * Resolve a command name.  If you change this routine, you may have to
+ * change the shellexec routine as well.
+ */
+
+void
+find_command(shinstance *psh, char *name, struct cmdentry *entry, int act, const char *path)
+{
+	struct tblentry *cmdp, loc_cmd;
+	int idx;
+	int prev;
+	char *fullname;
+	int e;
+	int (*bltin)(shinstance*,int,char **);
+	int argv0len = (int)strlen(name);
+	char kmkcmd[48];
+#ifdef PC_EXE_EXTS
+        int has_ext = argv0len - 4;
+        has_ext = has_ext > 0
+            && name[has_ext] == '.'
+            /* use strstr and upper/lower permuated extensions to avoid multiple strcasecmp calls. */
+            && strstr("exe;" "Exe;" "EXe;" "EXE;" "ExE;" "eXe;" "eXE;" "exE;"
+                      "cmd;" "Cmd;" "CMd;" "CMD;" "CmD;" "cMd;" "cMD;" "cmD;"
+                      "com;" "Com;" "COm;" "COM;" "CoM;" "cOm;" "cOM;" "coM;"
+                      "bat;" "Bat;" "BAt;" "BAT;" "BaT;" "bAt;" "bAT;" "baT;"
+                      "btm;" "Btm;" "BTm;" "BTM;" "BtM;" "bTm;" "bTM;" "btM;",
+                      name + has_ext + 1)
+               != NULL;
+#endif
+
+	/* If name contains a slash, don't use PATH or hash table */
+	if (haspath(name)) {
+		if (act & DO_ABS) {
+			while (shfile_stat_exists(&psh->fdtab, name) < 0) {
+#ifdef SYSV
+				if (errno == EINTR)
+					continue;
+#endif
+				if (errno != ENOENT && errno != ENOTDIR)
+					e = errno;
+				entry->cmdtype = CMDUNKNOWN;
+				entry->u.n.index = -1;
+				entry->u.n.suffix = -1;
+				return;
+			}
+			entry->cmdtype = CMDNORMAL;
+			entry->u.n.index = -1;
+			entry->u.n.suffix = -1;
+			return;
+		}
+		entry->cmdtype = CMDNORMAL;
+		entry->u.n.index = 0;
+		entry->u.n.suffix = 0;
+		return;
+	}
+
+	if (path != pathval(psh))
+		act |= DO_ALTPATH;
+
+	if (act & DO_ALTPATH && strstr(path, "%builtin") != NULL)
+		act |= DO_ALTBLTIN;
+
+	/* If name is in the table, check answer will be ok */
+	if ((cmdp = cmdlookup(psh, name, 0)) != NULL) {
+		do {
+			switch (cmdp->cmdtype) {
+			case CMDNORMAL:
+				if (act & DO_ALTPATH) {
+					cmdp = NULL;
+					continue;
+				}
+				break;
+			case CMDFUNCTION:
+				if (act & DO_NOFUNC) {
+					cmdp = NULL;
+					continue;
+				}
+				break;
+			case CMDBUILTIN:
+				if ((act & DO_ALTBLTIN) || psh->builtinloc >= 0) {
+					cmdp = NULL;
+					continue;
+				}
+				break;
+			}
+			/* if not invalidated by cd, we're done */
+			if (cmdp->rehash == 0)
+				goto success;
+		} while (0);
+	}
+
+	/* If %builtin not in path, check for builtin next */
+	if ((act & DO_ALTPATH ? !(act & DO_ALTBLTIN) : psh->builtinloc < 0) &&
+	    (bltin = find_builtin(psh, name)) != 0)
+		goto builtin_success;
+
+	/* We have to search path. */
+	prev = -1;		/* where to start */
+	if (cmdp) {		/* doing a rehash */
+		if (cmdp->cmdtype == CMDBUILTIN)
+			prev = psh->builtinloc;
+		else
+			prev = cmdp->param.n.index;
+	}
+
+	/* Before we search the PATH, transform kmk_builtin_% to kmk_% so we don't
+	   need to be too careful mixing internal and external kmk command. */
+	if (   argv0len > 12
+	    && argv0len < (int)sizeof(kmkcmd)
+	    && strncmp(name, "kmk_builtin_", 12) == 0
+	    && strpbrk(name + 12, "./\\-:;<>") == NULL) {
+	        memcpy(kmkcmd, "kmk_", 4);
+		memcpy(&kmkcmd[4], name + 12, argv0len + 1 - 8);
+		TRACE((psh, "find_command: dropped '_builtin' from %s to %s\n", name, kmkcmd));
+		argv0len -= 8;
+		name = kmkcmd;
+	}
+
+	e = ENOENT;
+	idx = -1;
+loop:
+	while ((fullname = padvance(psh, &path, name)) != NULL) {
+#ifdef PC_EXE_EXTS
+		int suffix;
+#endif
+		int isreg;
+		stunalloc(psh, fullname);
+		idx++;
+		if (psh->pathopt) {
+			if (prefix("builtin", psh->pathopt)) {
+				if ((bltin = find_builtin(psh, name)) == 0)
+					goto loop;
+				goto builtin_success;
+			} else if (prefix("func", psh->pathopt)) {
+				/* handled below */
+			} else {
+				/* ignore unimplemented options */
+				goto loop;
+			}
+		}
+		/* if rehash, don't redo absolute path names */
+		if (idx <= prev && isabspath(fullname)) {
+			if (idx < prev)
+				goto loop;
+			TRACE((psh, "searchexec \"%s\": no change\n", name));
+			goto success;
+		}
+#ifdef PC_EXE_EXTS
+		while ((isreg = stat_pc_exec_exts(psh, fullname, has_ext, &suffix)) < 0) {
+#else
+		while ((isreg = shfile_stat_isreg(&psh->fdtab, fullname)) < 0) {
+#endif
+#ifdef SYSV
+			if (errno == EINTR)
+				continue;
+#endif
+			if (errno != ENOENT && errno != ENOTDIR)
+				e = errno;
+
+			goto loop;
+		}
+		e = EACCES;	/* if we fail, this will be the error */
+		if (isreg < 1)
+			goto loop;
+		if (psh->pathopt) {		/* this is a %func directory */
+			if (act & DO_NOFUNC)
+				goto loop;
+			stalloc(psh, strlen(fullname) + 1);
+			readcmdfile(psh, fullname);
+			if ((cmdp = cmdlookup(psh, name, 0)) == NULL ||
+			    cmdp->cmdtype != CMDFUNCTION)
+				error(psh, "%s not defined in %s", name, fullname);
+			stunalloc(psh, fullname);
+			goto success;
+		}
+#ifdef notdef
+		/* XXX this code stops root executing stuff, and is buggy
+		   if you need a group from the group list. */
+		if (statb.st_uid == sh_geteuid(psh)) {
+			if ((statb.st_mode & 0100) == 0)
+				goto loop;
+		} else if (statb.st_gid == sh_getegid(psh)) {
+			if ((statb.st_mode & 010) == 0)
+				goto loop;
+		} else {
+			if ((statb.st_mode & 01) == 0)
+				goto loop;
+		}
+#endif
+		TRACE((psh, "searchexec \"%s\" returns \"%s\"\n", name, fullname));
+		INTOFF;
+		if (act & DO_ALTPATH) {
+			stalloc(psh, strlen(fullname) + 1);
+			cmdp = &loc_cmd;
+		} else
+			cmdp = cmdlookup(psh, name, 1);
+		cmdp->cmdtype = CMDNORMAL;
+		cmdp->param.n.index = idx;
+#ifdef PC_EXE_EXTS
+		cmdp->param.n.suffix = suffix;
+#else
+		cmdp->param.n.suffix = 0;
+#endif
+		INTON;
+		goto success;
+	}
+
+	/* We failed.  If there was an entry for this command, delete it */
+	if (cmdp)
+		delete_cmd_entry(psh);
+	if (act & DO_ERR)
+		outfmt(psh->out2, "%s: %s\n", name, errmsg(psh, e, E_EXEC));
+	entry->cmdtype = CMDUNKNOWN;
+	return;
+
+builtin_success:
+	INTOFF;
+	if (act & DO_ALTPATH)
+		cmdp = &loc_cmd;
+	else
+		cmdp = cmdlookup(psh, name, 1);
+	if (cmdp->cmdtype == CMDFUNCTION)
+		/* DO_NOFUNC must have been set */
+		cmdp = &loc_cmd;
+	cmdp->cmdtype = CMDBUILTIN;
+	cmdp->param.bltin = bltin;
+	INTON;
+success:
+	cmdp->rehash = 0;
+	entry->cmdtype = cmdp->cmdtype;
+	entry->u = cmdp->param;
+}
+
+
+
+/*
+ * Search the table of builtin commands.
+ */
+
+int
+(*find_builtin(shinstance *psh, char *name))(shinstance *psh, int, char **)
+{
+	const struct builtincmd *bp;
+
+	for (bp = builtincmd ; bp->name ; bp++) {
+		if (*bp->name == *name && equal(bp->name, name))
+			return bp->builtin;
+	}
+	return 0;
+}
+
+int
+(*find_splbltin(shinstance *psh, char *name))(shinstance *psh, int, char **)
+{
+	const struct builtincmd *bp;
+
+	for (bp = splbltincmd ; bp->name ; bp++) {
+		if (*bp->name == *name && equal(bp->name, name))
+			return bp->builtin;
+	}
+	return 0;
+}
+
+/*
+ * At shell startup put special builtins into hash table.
+ * ensures they are executed first (see posix).
+ * We stop functions being added with the same name
+ * (as they are impossible to call)
+ */
+
+void
+hash_special_builtins(shinstance *psh)
+{
+	const struct builtincmd *bp;
+	struct tblentry *cmdp;
+
+	for (bp = splbltincmd ; bp->name ; bp++) {
+		cmdp = cmdlookup(psh, bp->name, 1);
+		cmdp->cmdtype = CMDSPLBLTIN;
+		cmdp->param.bltin = bp->builtin;
+	}
+}
+
+
+
+/*
+ * Called when a cd is done.  Marks all commands so the next time they
+ * are executed they will be rehashed.
+ */
+
+void
+hashcd(shinstance *psh)
+{
+	struct tblentry **pp;
+	struct tblentry *cmdp;
+
+	for (pp = psh->cmdtable ; pp < &psh->cmdtable[CMDTABLESIZE] ; pp++) {
+		for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) {
+			if (cmdp->cmdtype == CMDNORMAL
+			 || (cmdp->cmdtype == CMDBUILTIN && psh->builtinloc >= 0))
+				cmdp->rehash = 1;
+		}
+	}
+}
+
+
+
+/*
+ * Fix command hash table when PATH changed.
+ * Called before PATH is changed.  The argument is the new value of PATH;
+ * pathval(psh) still returns the old value at this point.
+ * Called with interrupts off.
+ */
+
+void
+changepath(shinstance *psh, const char *newval)
+{
+	const char *old, *new;
+	int idx;
+	int firstchange;
+	int bltin;
+
+	old = pathval(psh);
+	new = newval;
+	firstchange = 9999;	/* assume no change */
+	idx = 0;
+	bltin = -1;
+	for (;;) {
+		if (*old != *new) {
+			firstchange = idx;
+#ifdef PC_PATH_SEP
+			if ((*old == '\0' && *new == ';')
+			 || (*old == ';' && *new == '\0'))
+#else
+			if ((*old == '\0' && *new == ':')
+			 || (*old == ':' && *new == '\0'))
+#endif
+				firstchange++;
+			old = new;	/* ignore subsequent differences */
+		}
+		if (*new == '\0')
+			break;
+		if (*new == '%' && bltin < 0 && prefix("builtin", new + 1))
+			bltin = idx;
+#ifdef PC_PATH_SEP
+		if (*new == ';') {
+#else
+		if (*new == ':') {
+#endif
+			idx++;
+		}
+		new++, old++;
+	}
+	if (psh->builtinloc < 0 && bltin >= 0)
+		psh->builtinloc = bltin;		/* zap builtins */
+	if (psh->builtinloc >= 0 && bltin < 0)
+		firstchange = 0;
+	clearcmdentry(psh, firstchange);
+	psh->builtinloc = bltin;
+}
+
+
+/*
+ * Clear out command entries.  The argument specifies the first entry in
+ * PATH which has changed.
+ */
+
+STATIC void
+clearcmdentry(shinstance *psh, int firstchange)
+{
+	struct tblentry **tblp;
+	struct tblentry **pp;
+	struct tblentry *cmdp;
+
+	INTOFF;
+	for (tblp = psh->cmdtable ; tblp < &psh->cmdtable[CMDTABLESIZE] ; tblp++) {
+		pp = tblp;
+		while ((cmdp = *pp) != NULL) {
+			if ((cmdp->cmdtype == CMDNORMAL &&
+			     cmdp->param.n.index >= firstchange)
+			 || (cmdp->cmdtype == CMDBUILTIN &&
+			     psh->builtinloc >= firstchange)) {
+				*pp = cmdp->next;
+				ckfree(psh, cmdp);
+			} else {
+				pp = &cmdp->next;
+			}
+		}
+	}
+	INTON;
+}
+
+
+/*
+ * Delete all functions.
+ */
+
+#ifdef mkinit
+MKINIT void deletefuncs(struct shinstance *);
+MKINIT void hash_special_builtins(struct shinstance *);
+
+INIT {
+	hash_special_builtins(psh);
+}
+
+SHELLPROC {
+	deletefuncs(psh);
+}
+#endif
+
+void
+deletefuncs(shinstance *psh)
+{
+	struct tblentry **tblp;
+	struct tblentry **pp;
+	struct tblentry *cmdp;
+
+	INTOFF;
+	for (tblp = psh->cmdtable ; tblp < &psh->cmdtable[CMDTABLESIZE] ; tblp++) {
+		pp = tblp;
+		while ((cmdp = *pp) != NULL) {
+			if (cmdp->cmdtype == CMDFUNCTION) {
+				*pp = cmdp->next;
+				freefunc(psh, cmdp->param.func);
+				ckfree(psh, cmdp);
+			} else {
+				pp = &cmdp->next;
+			}
+		}
+	}
+	INTON;
+}
+
+
+
+/*
+ * Locate a command in the command hash table.  If "add" is nonzero,
+ * add the command to the table if it is not already present.  The
+ * variable "lastcmdentry" is set to point to the address of the link
+ * pointing to the entry, so that delete_cmd_entry can delete the
+ * entry.
+ */
+
+struct tblentry **lastcmdentry;
+
+
+STATIC struct tblentry *
+cmdlookup(shinstance *psh, const char *name, int add)
+{
+	int hashval;
+	const char *p;
+	struct tblentry *cmdp;
+	struct tblentry **pp;
+
+	p = name;
+	hashval = *p << 4;
+	while (*p)
+		hashval += *p++;
+	hashval &= 0x7FFF;
+	pp = &psh->cmdtable[hashval % CMDTABLESIZE];
+	for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) {
+		if (equal(cmdp->cmdname, name))
+			break;
+		pp = &cmdp->next;
+	}
+	if (add && cmdp == NULL) {
+		INTOFF;
+		cmdp = *pp = ckmalloc(psh, sizeof (struct tblentry) - ARB
+					+ strlen(name) + 1);
+		cmdp->next = NULL;
+		cmdp->cmdtype = CMDUNKNOWN;
+		cmdp->rehash = 0;
+		cmdp->param.n.index = 0;
+		cmdp->param.n.suffix = 0;
+		strcpy(cmdp->cmdname, name);
+		INTON;
+	}
+	lastcmdentry = pp;
+	return cmdp;
+}
+
+/*
+ * Delete the command entry returned on the last lookup.
+ */
+
+STATIC void
+delete_cmd_entry(shinstance *psh)
+{
+	struct tblentry *cmdp;
+
+	INTOFF;
+	cmdp = *lastcmdentry;
+	*lastcmdentry = cmdp->next;
+	ckfree(psh, cmdp);
+	INTON;
+}
+
+
+
+#ifdef notdef
+void
+getcmdentry(shinstance *psh, char *name, struct cmdentry *entry)
+{
+	struct tblentry *cmdp = cmdlookup(psh, name, 0);
+
+	if (cmdp) {
+		entry->u = cmdp->param;
+		entry->cmdtype = cmdp->cmdtype;
+	} else {
+		entry->cmdtype = CMDUNKNOWN;
+		entry->u.index = 0;
+	}
+}
+#endif
+
+
+/*
+ * Add a new command entry, replacing any existing command entry for
+ * the same name - except special builtins.
+ */
+
+STATIC void
+addcmdentry(shinstance *psh, char *name, struct cmdentry *entry)
+{
+	struct tblentry *cmdp;
+
+	INTOFF;
+	cmdp = cmdlookup(psh, name, 1);
+	if (cmdp->cmdtype != CMDSPLBLTIN) {
+		if (cmdp->cmdtype == CMDFUNCTION) {
+			freefunc(psh, cmdp->param.func);
+		}
+		cmdp->cmdtype = entry->cmdtype;
+		cmdp->param = entry->u;
+	}
+	INTON;
+}
+
+
+/*
+ * Define a shell function.
+ */
+
+void
+defun(shinstance *psh, char *name, union node *func)
+{
+	struct cmdentry entry;
+
+	INTOFF;
+	entry.cmdtype = CMDFUNCTION;
+	entry.u.func = copyfunc(psh, func);
+	addcmdentry(psh, name, &entry);
+	INTON;
+}
+
+
+/*
+ * Delete a function if it exists.
+ */
+
+int
+unsetfunc(shinstance *psh, char *name)
+{
+	struct tblentry *cmdp;
+
+	if ((cmdp = cmdlookup(psh, name, 0)) != NULL &&
+	    cmdp->cmdtype == CMDFUNCTION) {
+		freefunc(psh, cmdp->param.func);
+		delete_cmd_entry(psh);
+		return (0);
+	}
+	return (1);
+}
+
+/*
+ * Locate and print what a word is...
+ * also used for 'command -[v|V]'
+ */
+
+int
+typecmd(shinstance *psh, int argc, char **argv)
+{
+	struct cmdentry entry;
+	struct tblentry *cmdp;
+	char * const *pp;
+	struct alias *ap;
+	int err = 0;
+	char *arg;
+	int c;
+	int V_flag = 0;
+	int v_flag = 0;
+	int p_flag = 0;
+
+	while ((c = nextopt(psh, "vVp")) != 0) {
+		switch (c) {
+		case 'v': v_flag = 1; break;
+		case 'V': V_flag = 1; break;
+		case 'p': p_flag = 1; break;
+		}
+	}
+
+	if (p_flag && (v_flag || V_flag))
+		error(psh, "cannot specify -p with -v or -V");
+
+	while ((arg = *psh->argptr++)) {
+		if (!v_flag)
+			out1str(psh, arg);
+		/* First look at the keywords */
+		for (pp = parsekwd; *pp; pp++)
+			if (**pp == *arg && equal(*pp, arg))
+				break;
+
+		if (*pp) {
+			if (v_flag)
+				err = 1;
+			else
+				out1str(psh, " is a shell keyword\n");
+			continue;
+		}
+
+		/* Then look at the aliases */
+		if ((ap = lookupalias(psh, arg, 1)) != NULL) {
+			if (!v_flag)
+				out1fmt(psh, " is an alias for \n");
+			out1fmt(psh, "%s\n", ap->val);
+			continue;
+		}
+
+		/* Then check if it is a tracked alias */
+		if ((cmdp = cmdlookup(psh, arg, 0)) != NULL) {
+			entry.cmdtype = cmdp->cmdtype;
+			entry.u = cmdp->param;
+		} else {
+			/* Finally use brute force */
+			find_command(psh, arg, &entry, DO_ABS, pathval(psh));
+		}
+
+		switch (entry.cmdtype) {
+		case CMDNORMAL: {
+			if (!haspath(arg)) {
+				const char *path = pathval(psh);
+				char *name;
+				int j = entry.u.n.index;
+				do {
+					name = padvance(psh, &path, arg);
+					stunalloc(psh, name);
+				} while (--j >= 0);
+				if (!v_flag)
+					out1fmt(psh, " is%s ",
+					    cmdp ? " a tracked alias for" : "");
+#ifdef PC_EXE_EXTS
+				if ((unsigned)entry.u.n.suffix < K_ELEMENTS(g_exe_suffixes))
+					out1fmt(psh, "%s%s\n", name, g_exe_suffixes[entry.u.n.suffix]);
+				else
+#endif
+					out1fmt(psh, "%s\n", name);
+			} else {
+				if (shfile_access(&psh->fdtab, arg, X_OK) == 0) {
+					if (!v_flag)
+						out1fmt(psh, " is ");
+					out1fmt(psh, "%s\n", arg);
+				} else {
+					if (!v_flag)
+						out1fmt(psh, ": %s\n",
+						    sh_strerror(psh, errno));
+					else
+						err = 126;
+				}
+			}
+ 			break;
+		}
+		case CMDFUNCTION:
+			if (!v_flag)
+				out1str(psh, " is a shell function\n");
+			else
+				out1fmt(psh, "%s\n", arg);
+			break;
+
+		case CMDBUILTIN:
+			if (!v_flag)
+				out1str(psh, " is a shell builtin\n");
+			else
+				out1fmt(psh, "%s\n", arg);
+			break;
+
+		case CMDSPLBLTIN:
+			if (!v_flag)
+				out1str(psh, " is a special shell builtin\n");
+			else
+				out1fmt(psh, "%s\n", arg);
+			break;
+
+		default:
+			if (!v_flag)
+				out1str(psh, ": not found\n");
+			err = 127;
+			break;
+		}
+	}
+	return err;
+}
diff --git a/src/kash/exec.h b/src/kash/exec.h
new file mode 100644
index 0000000..50849fd
--- /dev/null
+++ b/src/kash/exec.h
@@ -0,0 +1,96 @@
+/*	$NetBSD: exec.h,v 1.21 2003/08/07 09:05:31 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)exec.h	8.3 (Berkeley) 6/8/95
+ */
+
+#ifndef ___exec_h
+#define ___exec_h
+
+/* values of cmdtype */
+#define CMDUNKNOWN	-1	/* no entry in table for command */
+#define CMDNORMAL	0	/* command is an executable program */
+#define CMDFUNCTION	1	/* command is a shell function */
+#define CMDBUILTIN	2	/* command is a shell builtin */
+#define CMDSPLBLTIN	3	/* command is a special shell builtin */
+
+
+union param {
+        struct
+        {
+            int index;
+            int suffix; /* PC suffix index */
+        } n;
+        int (*bltin)(struct shinstance*, int, char**);
+        union node *func;
+};
+
+struct cmdentry {
+	int cmdtype;
+        union param u;
+};
+
+
+/* action to find_command() */
+#define DO_ERR		0x01	/* prints errors */
+#define DO_ABS		0x02	/* checks absolute paths */
+#define DO_NOFUNC	0x04	/* don't return shell functions, for command */
+#define DO_ALTPATH	0x08	/* using alternate path */
+#define DO_ALTBLTIN	0x20	/* %builtin in alt. path */
+
+/*extern const char *pathopt;*/	/* set by padvance */
+
+#if !defined(__GNUC__) && !defined(__attribute__)
+# define __attribute__(a)
+#endif
+
+#ifndef SH_FORKED_MODE
+void subshellinitexec(shinstance *, shinstance *);
+#endif
+SH_NORETURN_1 void shellexec(struct shinstance *, char **, char **, const char *, int, int) SH_NORETURN_2;
+char *padvance(struct shinstance *, const char **, const char *);
+int hashcmd(struct shinstance *, int, char **);
+void find_command(struct shinstance *, char *, struct cmdentry *, int, const char *);
+int (*find_builtin(struct shinstance *, char *))(struct shinstance *, int, char **);
+int (*find_splbltin(struct shinstance *, char *))(struct shinstance *, int, char **);
+void hashcd(struct shinstance *);
+void changepath(struct shinstance *, const char *);
+void deletefuncs(struct shinstance *);
+void getcmdentry(struct shinstance *, char *, struct cmdentry *);
+void addcmdentry(struct shinstance *, char *, struct cmdentry *);
+void defun(struct shinstance *, char *, union node *);
+int unsetfunc(struct shinstance *, char *);
+int typecmd(struct shinstance *, int, char **);
+void hash_special_builtins(struct shinstance *);
+
+#endif
diff --git a/src/kash/expand.c b/src/kash/expand.c
new file mode 100644
index 0000000..ff30455
--- /dev/null
+++ b/src/kash/expand.c
@@ -0,0 +1,1617 @@
+/*	$NetBSD: expand.c,v 1.71 2005/06/01 15:41:19 lukem Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)expand.c	8.5 (Berkeley) 5/15/95";
+#else
+__RCSID("$NetBSD: expand.c,v 1.71 2005/06/01 15:41:19 lukem Exp $");
+#endif /* not lint */
+#endif
+
+#include <sys/types.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+/*
+ * Routines to expand arguments to commands.  We have to deal with
+ * backquotes, shell variables, and file metacharacters.
+ */
+
+#include "shell.h"
+#include "main.h"
+#include "nodes.h"
+#include "eval.h"
+#include "expand.h"
+#include "syntax.h"
+#include "parser.h"
+#include "jobs.h"
+#include "options.h"
+#include "var.h"
+#include "input.h"
+#include "output.h"
+#include "memalloc.h"
+#include "error.h"
+#include "mystring.h"
+#include "show.h"
+#include "shinstance.h"
+
+///*
+// * Structure specifying which parts of the string should be searched
+// * for IFS characters.
+// */
+//
+//struct ifsregion {
+//	struct ifsregion *next;	/* next region in list */
+//	int begoff;		/* offset of start of region */
+//	int endoff;		/* offset of end of region */
+//	int inquotes;		/* search for nul bytes only */
+//};
+//
+//
+//char *expdest;			/* output of current string */
+//struct nodelist *argbackq;	/* list of back quote expressions */
+//struct ifsregion ifsfirst;	/* first struct in list of ifs regions */
+//struct ifsregion *ifslastp;	/* last struct in list */
+//struct arglist exparg;		/* holds expanded arg list */
+
+STATIC void argstr(shinstance *, char *, int);
+STATIC void expari(shinstance *, int);
+STATIC char *exptilde(shinstance *, char *, int);
+STATIC void expbackq(shinstance *, union node *, int, int);
+STATIC int subevalvar(shinstance *, char *, char *, int, int, int, int);
+STATIC char *evalvar(shinstance *, char *, int);
+STATIC int varisset(shinstance *, char *, int);
+STATIC void varvalue(shinstance *, char *, int, int, int);
+STATIC void recordregion(shinstance *, int, int, int);
+STATIC void removerecordregions(shinstance *, int);
+STATIC void ifsbreakup(shinstance *, char *, struct arglist *);
+STATIC void ifsfree(shinstance *);
+STATIC void expandmeta(shinstance *, struct strlist *, int);
+STATIC void expmeta(shinstance *, char *, char *);
+STATIC void addfname(shinstance *, char *);
+STATIC struct strlist *expsort(struct strlist *);
+STATIC struct strlist *msort(struct strlist *, int);
+STATIC int pmatch(char *, char *, int);
+STATIC char *cvtnum(shinstance *, int, char *);
+STATIC char *cvtnum64(shinstance *, KI64, char *);
+
+/*
+ * Expand shell variables and backquotes inside a here document.
+ */
+
+void
+expandhere(shinstance *psh, union node *arg, int fd)
+{
+	psh->herefd = fd;
+	expandarg(psh, arg, (struct arglist *)NULL, 0);
+	xwrite(psh, fd, stackblock(psh), psh->expdest - stackblock(psh));
+}
+
+
+/*
+ * Perform variable substitution and command substitution on an argument,
+ * placing the resulting list of arguments in arglist.  If EXP_FULL is true,
+ * perform splitting and file name expansion.  When arglist is NULL, perform
+ * here document expansion.
+ */
+
+void
+expandarg(shinstance *psh, union node *arg, struct arglist *arglist, int flag)
+{
+	struct strlist *sp;
+	char *p;
+
+	psh->argbackq = arg->narg.backquote;
+	STARTSTACKSTR(psh, psh->expdest);
+	psh->ifsfirst.next = NULL;
+	psh->ifslastp = NULL;
+	argstr(psh, arg->narg.text, flag);
+	if (arglist == NULL) {
+		return;			/* here document expanded */
+	}
+	STPUTC(psh, '\0', psh->expdest);
+	p = grabstackstr(psh, psh->expdest);
+	TRACE2((psh, "expandarg: p='%s'\n", p));
+	psh->exparg.lastp = &psh->exparg.list;
+	/*
+	 * TODO - EXP_REDIR
+	 */
+	if (flag & EXP_FULL) {
+		ifsbreakup(psh, p, &psh->exparg);
+		*psh->exparg.lastp = NULL;
+		psh->exparg.lastp = &psh->exparg.list;
+		expandmeta(psh, psh->exparg.list, flag);
+	} else {
+		if (flag & EXP_REDIR) /*XXX - for now, just remove escapes */
+			rmescapes(psh, p);
+		sp = (struct strlist *)stalloc(psh, sizeof (struct strlist));
+		sp->text = p;
+		*psh->exparg.lastp = sp;
+		psh->exparg.lastp = &sp->next;
+	}
+	ifsfree(psh);
+	*psh->exparg.lastp = NULL;
+	if (psh->exparg.list) {
+		*arglist->lastp = psh->exparg.list;
+		arglist->lastp = psh->exparg.lastp;
+	}
+}
+
+
+
+/*
+ * Perform variable and command substitution.
+ * If EXP_FULL is set, output CTLESC characters to allow for further processing.
+ * Otherwise treat $@ like $* since no splitting will be performed.
+ */
+
+STATIC void
+argstr(shinstance *psh, char *p, int flag)
+{
+	char c;
+	int quotes = flag & (EXP_FULL | EXP_CASE);	/* do CTLESC */
+	int firsteq = 1;
+	const char *ifs = NULL;
+	int ifs_split = EXP_IFS_SPLIT;
+
+	if (flag & EXP_IFS_SPLIT)
+		ifs = ifsset(psh) ? ifsval(psh) : " \t\n";
+
+	if (*p == '~' && (flag & (EXP_TILDE | EXP_VARTILDE)))
+		p = exptilde(psh, p, flag);
+	for (;;) {
+		switch (c = *p++) {
+		case '\0':
+		case CTLENDVAR: /* end of expanding yyy in ${xxx-yyy} */
+			return;
+		case CTLQUOTEMARK:
+			/* "$@" syntax adherence hack */
+			if (p[0] == CTLVAR && p[2] == '@' && p[3] == '=')
+				break;
+			if ((flag & EXP_FULL) != 0)
+				STPUTC(psh, c, psh->expdest);
+			ifs_split = 0;
+			break;
+		case CTLQUOTEEND:
+			ifs_split = EXP_IFS_SPLIT;
+			break;
+		case CTLESC:
+			if (quotes)
+				STPUTC(psh, c, psh->expdest);
+			c = *p++;
+			STPUTC(psh, c, psh->expdest);
+			break;
+		case CTLVAR:
+			p = evalvar(psh, p, (flag & ~EXP_IFS_SPLIT) | (flag & ifs_split));
+			break;
+		case CTLBACKQ:
+		case CTLBACKQ|CTLQUOTE:
+			expbackq(psh, psh->argbackq->n, c & CTLQUOTE, flag);
+			psh->argbackq = psh->argbackq->next;
+			break;
+		case CTLENDARI:
+			expari(psh, flag);
+			break;
+		case ':':
+		case '=':
+			/*
+			 * sort of a hack - expand tildes in variable
+			 * assignments (after the first '=' and after ':'s).
+			 */
+			STPUTC(psh, c, psh->expdest);
+			if (flag & EXP_VARTILDE && *p == '~') {
+				if (c == '=') {
+					if (firsteq)
+						firsteq = 0;
+					else
+						break;
+				}
+				p = exptilde(psh, p, flag);
+			}
+			break;
+		default:
+			STPUTC(psh, c, psh->expdest);
+			if (flag & EXP_IFS_SPLIT & ifs_split && strchr(ifs, c) != NULL) {
+				/* We need to get the output split here... */
+				recordregion(psh, (int)(psh->expdest - stackblock(psh) - 1),
+						(int)(psh->expdest - stackblock(psh)), 0);
+			}
+			break;
+		}
+	}
+}
+
+STATIC char *
+exptilde(shinstance *psh, char *p, int flag)
+{
+	char c, *startp = p;
+	const char *home;
+	int quotes = flag & (EXP_FULL | EXP_CASE);
+
+	while ((c = *p) != '\0') {
+		switch(c) {
+		case CTLESC:
+			return (startp);
+		case CTLQUOTEMARK:
+			return (startp);
+		case ':':
+			if (flag & EXP_VARTILDE)
+				goto done;
+			break;
+		case '/':
+			goto done;
+		}
+		p++;
+	}
+done:
+	*p = '\0';
+	if (*(startp+1) == '\0') {
+		if ((home = lookupvar(psh, "HOME")) == NULL)
+			goto lose;
+	} else {
+		if ((home = sh_gethomedir(psh, startp+1)) == NULL)
+			goto lose;
+	}
+	if (*home == '\0')
+		goto lose;
+	*p = c;
+	while ((c = *home++) != '\0') {
+		if (quotes && SQSYNTAX[(int)c] == CCTL)
+			STPUTC(psh, CTLESC, psh->expdest);
+		STPUTC(psh, c, psh->expdest);
+	}
+	return (p);
+lose:
+	*p = c;
+	return (startp);
+}
+
+
+STATIC void
+removerecordregions(shinstance *psh, int endoff)
+{
+	if (psh->ifslastp == NULL)
+		return;
+
+	if (psh->ifsfirst.endoff > endoff) {
+		while (psh->ifsfirst.next != NULL) {
+			struct ifsregion *ifsp;
+			INTOFF;
+			ifsp = psh->ifsfirst.next->next;
+			ckfree(psh, psh->ifsfirst.next);
+			psh->ifsfirst.next = ifsp;
+			INTON;
+		}
+		if (psh->ifsfirst.begoff > endoff)
+			psh->ifslastp = NULL;
+		else {
+			psh->ifslastp = &psh->ifsfirst;
+			psh->ifsfirst.endoff = endoff;
+		}
+		return;
+	}
+
+	psh->ifslastp = &psh->ifsfirst;
+	while (psh->ifslastp->next && psh->ifslastp->next->begoff < endoff)
+		psh->ifslastp=psh->ifslastp->next;
+	while (psh->ifslastp->next != NULL) {
+		struct ifsregion *ifsp;
+		INTOFF;
+		ifsp = psh->ifslastp->next->next;
+		ckfree(psh, psh->ifslastp->next);
+		psh->ifslastp->next = ifsp;
+		INTON;
+	}
+	if (psh->ifslastp->endoff > endoff)
+		psh->ifslastp->endoff = endoff;
+}
+
+
+/*
+ * Expand arithmetic expression.  Backup to start of expression,
+ * evaluate, place result in (backed up) result, adjust string position.
+ */
+STATIC void
+expari(shinstance *psh, int flag)
+{
+	char *p, *start;
+	int result;
+	int begoff;
+	int quotes = flag & (EXP_FULL | EXP_CASE);
+	int quoted;
+
+	/*	ifsfree(); */
+
+	/*
+	 * This routine is slightly over-complicated for
+	 * efficiency.  First we make sure there is
+	 * enough space for the result, which may be bigger
+	 * than the expression if we add exponentation.  Next we
+	 * scan backwards looking for the start of arithmetic.  If the
+	 * next previous character is a CTLESC character, then we
+	 * have to rescan starting from the beginning since CTLESC
+	 * characters have to be processed left to right.
+	 */
+#if INT_MAX / 1000000000 >= 10 || INT_MIN / 1000000000 <= -10
+#error "integers with more than 10 digits are not supported"
+#endif
+	CHECKSTRSPACE(psh, 12 - 2, psh->expdest);
+	USTPUTC(psh, '\0', psh->expdest);
+	start = stackblock(psh);
+	p = psh->expdest - 1;
+	while (*p != CTLARI && p >= start)
+		--p;
+	if (*p != CTLARI)
+		error(psh, "missing CTLARI (shouldn't happen)");
+	if (p > start && *(p-1) == CTLESC)
+		for (p = start; *p != CTLARI; p++)
+			if (*p == CTLESC)
+				p++;
+
+	if (p[1] == '"')
+		quoted=1;
+	else
+		quoted=0;
+	begoff = (int)(p - start);
+	removerecordregions(psh, begoff);
+	if (quotes)
+		rmescapes(psh, p+2);
+	result = arith(psh, p+2);
+	fmtstr(p, 12, "%d", result);
+
+	while (*p++)
+		;
+
+	if (quoted == 0)
+		recordregion(psh, begoff, (int)(p - 1 - start), 0);
+	result = (int)(psh->expdest - p + 1);
+	STADJUST(psh, -result, psh->expdest);
+}
+
+
+/*
+ * Expand stuff in backwards quotes.
+ */
+
+STATIC void
+expbackq(shinstance *psh, union node *cmd, int quoted, int flag)
+{
+	struct backcmd in;
+	int i;
+	char buf[128];
+	char *p;
+	char *dest = psh->expdest;
+	struct ifsregion saveifs, *savelastp;
+	struct nodelist *saveargbackq;
+	char lastc;
+	int startloc = (int)(dest - stackblock(psh));
+	char const *syntax = quoted? DQSYNTAX : BASESYNTAX;
+	int saveherefd;
+	int quotes = flag & (EXP_FULL | EXP_CASE);
+#ifdef SH_DEAL_WITH_CRLF
+	int pending_cr = 0;
+#endif
+
+	INTOFF;
+	saveifs = psh->ifsfirst;
+	savelastp = psh->ifslastp;
+	saveargbackq = psh->argbackq;
+	saveherefd = psh->herefd;
+	psh->herefd = -1;
+	p = grabstackstr(psh, dest);
+	evalbackcmd(psh, cmd, &in);
+	ungrabstackstr(psh, p, dest);
+	psh->ifsfirst = saveifs;
+	psh->ifslastp = savelastp;
+	psh->argbackq = saveargbackq;
+	psh->herefd = saveherefd;
+
+	p = in.buf;
+	lastc = '\0';
+	for (;;) {
+		if (--in.nleft < 0) {
+			if (in.fd < 0)
+				break;
+			while ((i = shfile_read(&psh->fdtab, in.fd, buf, sizeof buf)) < 0 && errno == EINTR);
+			TRACE((psh, "expbackq: read returns %d\n", i));
+			if (i <= 0)
+				break;
+			p = buf;
+			in.nleft = i - 1;
+		}
+		lastc = *p++;
+#ifdef SH_DEAL_WITH_CRLF
+		if (pending_cr) {
+			pending_cr = 0;
+			if (lastc != '\n') {
+				if (quotes && syntax[(int)'\r'] == CCTL)
+					STPUTC(psh, CTLESC, dest);
+				STPUTC(psh, '\r', dest);
+			}
+		}
+		if (lastc == '\r')
+			pending_cr = '\r';
+		else
+#endif
+		if (lastc != '\0') {
+			if (quotes && syntax[(int)lastc] == CCTL)
+				STPUTC(psh, CTLESC, dest);
+			STPUTC(psh, lastc, dest);
+		}
+	}
+#ifdef SH_DEAL_WITH_CRLF
+	if (pending_cr) {
+		if (quotes && syntax[(int)'\r'] == CCTL)
+			STPUTC(psh, CTLESC, dest);
+		STPUTC(psh, '\r', dest);
+	}
+#endif
+
+	/* Eat all trailing newlines */
+	p = stackblock(psh) + startloc;
+	while (dest > p && dest[-1] == '\n')
+		STUNPUTC(psh, dest);
+
+	if (in.fd >= 0)
+		shfile_close(&psh->fdtab, in.fd);
+	if (in.buf)
+		ckfree(psh, in.buf);
+	if (in.jp)
+		psh->back_exitstatus = waitforjob(psh, in.jp);
+	if (quoted == 0)
+		recordregion(psh, startloc, (int)(dest - stackblock(psh)), 0);
+	TRACE((psh, "evalbackq: size=%d: \"%.*s\"\n",
+		(dest - stackblock(psh)) - startloc,
+		(dest - stackblock(psh)) - startloc,
+		stackblock(psh) + startloc));
+	psh->expdest = dest;
+	INTON;
+}
+
+
+
+STATIC int
+subevalvar(shinstance *psh, char *p, char *str, int strloc, int subtype, int startloc, int varflags)
+{
+	char *startp;
+	char *loc = NULL;
+	char *q;
+	int c = 0;
+	int saveherefd = psh->herefd;
+	struct nodelist *saveargbackq = psh->argbackq;
+	int amount;
+
+	psh->herefd = -1;
+	argstr(psh, p, 0);
+	STACKSTRNUL(psh, psh->expdest);
+	psh->herefd = saveherefd;
+	psh->argbackq = saveargbackq;
+	startp = stackblock(psh) + startloc;
+	if (str == NULL)
+	    str = stackblock(psh) + strloc;
+
+	switch (subtype) {
+	case VSASSIGN:
+		setvar(psh, str, startp, 0);
+		amount = (int)(startp - psh->expdest);
+		STADJUST(psh, amount, psh->expdest);
+		varflags &= ~VSNUL;
+		if (c != 0)
+			*loc = c;
+		return 1;
+
+	case VSQUESTION:
+		if (*p != CTLENDVAR) {
+			outfmt(&psh->errout, "%s\n", startp);
+			error(psh, (char *)NULL);
+		}
+		error(psh, "%.*s: parameter %snot set", p - str - 1,
+		      str, (varflags & VSNUL) ? "null or "
+					      : nullstr);
+		/* NOTREACHED */
+
+	case VSTRIMLEFT:
+		for (loc = startp; loc < str; loc++) {
+			c = *loc;
+			*loc = '\0';
+			if (patmatch(psh, str, startp, varflags & VSQUOTE))
+				goto recordleft;
+			*loc = c;
+			if ((varflags & VSQUOTE) && *loc == CTLESC)
+			        loc++;
+		}
+		return 0;
+
+	case VSTRIMLEFTMAX:
+		for (loc = str - 1; loc >= startp;) {
+			c = *loc;
+			*loc = '\0';
+			if (patmatch(psh, str, startp, varflags & VSQUOTE))
+				goto recordleft;
+			*loc = c;
+			loc--;
+			if ((varflags & VSQUOTE) && loc > startp &&
+			    *(loc - 1) == CTLESC) {
+				for (q = startp; q < loc; q++)
+					if (*q == CTLESC)
+						q++;
+				if (q > loc)
+					loc--;
+			}
+		}
+		return 0;
+
+	case VSTRIMRIGHT:
+	        for (loc = str - 1; loc >= startp;) {
+			if (patmatch(psh, str, loc, varflags & VSQUOTE))
+				goto recordright;
+			loc--;
+			if ((varflags & VSQUOTE) && loc > startp &&
+			    *(loc - 1) == CTLESC) {
+				for (q = startp; q < loc; q++)
+					if (*q == CTLESC)
+						q++;
+				if (q > loc)
+					loc--;
+			}
+		}
+		return 0;
+
+	case VSTRIMRIGHTMAX:
+		for (loc = startp; loc < str - 1; loc++) {
+			if (patmatch(psh, str, loc, varflags & VSQUOTE))
+				goto recordright;
+			if ((varflags & VSQUOTE) && *loc == CTLESC)
+			        loc++;
+		}
+		return 0;
+
+	default:
+		sh_abort(psh);
+	}
+
+recordleft:
+	*loc = c;
+	amount = (int)(((str - 1) - (loc - startp)) - psh->expdest);
+	STADJUST(psh, amount, psh->expdest);
+	while (loc != str - 1)
+		*startp++ = *loc++;
+	return 1;
+
+recordright:
+	amount = (int)(loc - psh->expdest);
+	STADJUST(psh, amount, psh->expdest);
+	STPUTC(psh, '\0', psh->expdest);
+	STADJUST(psh, -1, psh->expdest);
+	return 1;
+}
+
+
+/*
+ * Expand a variable, and return a pointer to the next character in the
+ * input string.
+ */
+
+STATIC char *
+evalvar(shinstance *psh, char *p, int flag)
+{
+	int subtype;
+	int varflags;
+	char *var;
+	char *val;
+	int patloc;
+	int c;
+	int set;
+	int special;
+	int startloc;
+	int varlen;
+	int apply_ifs;
+	int quotes = flag & (EXP_FULL | EXP_CASE);
+
+	varflags = (unsigned char)*p++;
+	subtype = varflags & VSTYPE;
+	var = p;
+	special = !is_name(*p);
+	p = strchr(p, '=') + 1;
+
+again: /* jump here after setting a variable with ${var=text} */
+	if (special) {
+		set = varisset(psh, var, varflags & VSNUL);
+		val = NULL;
+	} else {
+		val = lookupvar(psh, var);
+		if (val == NULL || ((varflags & VSNUL) && val[0] == '\0')) {
+			val = NULL;
+			set = 0;
+		} else
+			set = 1;
+	}
+
+	varlen = 0;
+	startloc = (int)(psh->expdest - stackblock(psh));
+
+	if (!set && uflag(psh)) {
+		switch (subtype) {
+		case VSNORMAL:
+		case VSTRIMLEFT:
+		case VSTRIMLEFTMAX:
+		case VSTRIMRIGHT:
+		case VSTRIMRIGHTMAX:
+		case VSLENGTH:
+			error(psh, "%.*s: parameter not set", p - var - 1, var);
+			/* NOTREACHED */
+		}
+	}
+
+	if (set && subtype != VSPLUS) {
+		/* insert the value of the variable */
+		if (special) {
+			varvalue(psh, var, varflags & VSQUOTE, subtype, flag);
+			if (subtype == VSLENGTH) {
+				varlen = (int)(psh->expdest - stackblock(psh) - startloc);
+				STADJUST(psh, -varlen, psh->expdest);
+			}
+		} else {
+			char const *syntax = (varflags & VSQUOTE) ? DQSYNTAX
+								  : BASESYNTAX;
+
+			if (subtype == VSLENGTH) {
+				for (;*val; val++)
+					varlen++;
+			} else {
+				while (*val) {
+					if (quotes && syntax[(int)*val] == CCTL)
+						STPUTC(psh, CTLESC, psh->expdest);
+					STPUTC(psh, *val++, psh->expdest);
+				}
+
+			}
+		}
+	}
+
+
+	apply_ifs = ((varflags & VSQUOTE) == 0 ||
+		(*var == '@' && psh->shellparam.nparam != 1));
+
+	switch (subtype) {
+	case VSLENGTH:
+		psh->expdest = cvtnum(psh, varlen, psh->expdest);
+		break;
+
+	case VSNORMAL:
+		break;
+
+	case VSPLUS:
+		set = !set;
+		/* FALLTHROUGH */
+	case VSMINUS:
+		if (!set) {
+		        argstr(psh, p, flag | (apply_ifs ? EXP_IFS_SPLIT : 0));
+			/*
+			 * ${x-a b c} doesn't get split, but removing the
+			 * 'apply_ifs = 0' apparantly breaks ${1+"$@"}..
+			 * ${x-'a b' c} should generate 2 args.
+			 */
+			/* We should have marked stuff already */
+			apply_ifs = 0;
+		}
+		break;
+
+	case VSTRIMLEFT:
+	case VSTRIMLEFTMAX:
+	case VSTRIMRIGHT:
+	case VSTRIMRIGHTMAX:
+		if (!set)
+			break;
+		/*
+		 * Terminate the string and start recording the pattern
+		 * right after it
+		 */
+		STPUTC(psh, '\0', psh->expdest);
+		patloc = (int)(psh->expdest - stackblock(psh));
+		if (subevalvar(psh, p, NULL, patloc, subtype,
+			       startloc, varflags) == 0) {
+			int amount = (int)(psh->expdest - stackblock(psh) - patloc) + 1;
+			STADJUST(psh, -amount, psh->expdest);
+		}
+		/* Remove any recorded regions beyond start of variable */
+		removerecordregions(psh, startloc);
+		apply_ifs = 1;
+		break;
+
+	case VSASSIGN:
+	case VSQUESTION:
+		if (set)
+			break;
+		if (subevalvar(psh, p, var, 0, subtype, startloc, varflags)) {
+			varflags &= ~VSNUL;
+			/*
+			 * Remove any recorded regions beyond
+			 * start of variable
+			 */
+			removerecordregions(psh, startloc);
+			goto again;
+		}
+		apply_ifs = 0;
+		break;
+
+	default:
+		sh_abort(psh);
+	}
+
+	if (apply_ifs)
+		recordregion(psh, startloc, (int)(psh->expdest - stackblock(psh)),
+			     varflags & VSQUOTE);
+
+	if (subtype != VSNORMAL) {	/* skip to end of alternative */
+		int nesting = 1;
+		for (;;) {
+			if ((c = *p++) == CTLESC)
+				p++;
+			else if (c == CTLBACKQ || c == (CTLBACKQ|CTLQUOTE)) {
+				if (set)
+					psh->argbackq = psh->argbackq->next;
+			} else if (c == CTLVAR) {
+				if ((*p++ & VSTYPE) != VSNORMAL)
+					nesting++;
+			} else if (c == CTLENDVAR) {
+				if (--nesting == 0)
+					break;
+			}
+		}
+	}
+	return p;
+}
+
+
+
+/*
+ * Test whether a specialized variable is set.
+ */
+
+STATIC int
+varisset(shinstance *psh, char *name, int nulok)
+{
+	if (*name == '!')
+		return psh->backgndpid != -1;
+	else if (*name == '@' || *name == '*') {
+		if (*psh->shellparam.p == NULL)
+			return 0;
+
+		if (nulok) {
+			char **av;
+
+			for (av = psh->shellparam.p; *av; av++)
+				if (**av != '\0')
+					return 1;
+			return 0;
+		}
+	} else if (is_digit(*name)) {
+		char *ap;
+		int num = atoi(name);
+
+		if (num > psh->shellparam.nparam)
+			return 0;
+
+		if (num == 0)
+			ap = psh->arg0;
+		else
+			ap = psh->shellparam.p[num - 1];
+
+		if (nulok && (ap == NULL || *ap == '\0'))
+			return 0;
+	}
+	return 1;
+}
+
+
+
+/*
+ * Add the value of a specialized variable to the stack string.
+ */
+
+STATIC void
+varvalue(shinstance *psh, char *name, int quoted, int subtype, int flag)
+{
+	int num;
+	char *p;
+	int i;
+	char sep;
+	char **ap;
+	char const *syntax;
+
+#define STRTODEST(p) \
+	do {\
+	if (flag & (EXP_FULL | EXP_CASE) && subtype != VSLENGTH) { \
+		syntax = quoted? DQSYNTAX : BASESYNTAX; \
+		while (*p) { \
+			if (syntax[(int)*p] == CCTL) \
+				STPUTC(psh, CTLESC, psh->expdest); \
+			STPUTC(psh, *p++, psh->expdest); \
+		} \
+	} else \
+		while (*p) \
+			STPUTC(psh, *p++, psh->expdest); \
+	} while (0)
+
+
+	switch (*name) {
+	case '$':
+#ifndef SH_FORKED_MODE
+		psh->expdest = cvtnum64(psh, psh->rootpid, psh->expdest);
+		break;
+#else
+		num = psh->rootpid;
+		goto numvar;
+#endif
+	case '?':
+		num = psh->exitstatus;
+		goto numvar;
+	case '#':
+		num = psh->shellparam.nparam;
+numvar:
+		psh->expdest = cvtnum(psh, num, psh->expdest);
+		break;
+	case '!':
+#ifndef SH_FORKED_MODE
+		psh->expdest = cvtnum64(psh, psh->backgndpid, psh->expdest);
+		break;
+#else
+		num = psh->backgndpid;
+		goto numvar;
+#endif
+	case '-':
+		for (i = 0; psh->optlist[i].name; i++) {
+			if (psh->optlist[i].val)
+				STPUTC(psh, psh->optlist[i].letter, psh->expdest);
+		}
+		break;
+	case '@':
+		if (flag & EXP_FULL && quoted) {
+			for (ap = psh->shellparam.p ; (p = *ap++) != NULL ; ) {
+				STRTODEST(p);
+				if (*ap)
+					STPUTC(psh, '\0', psh->expdest);
+			}
+			break;
+		}
+		/* fall through */
+	case '*':
+		if (ifsset(psh) != 0)
+			sep = ifsval(psh)[0];
+		else
+			sep = ' ';
+		for (ap = psh->shellparam.p ; (p = *ap++) != NULL ; ) {
+			STRTODEST(p);
+			if (*ap && sep)
+				STPUTC(psh, sep, psh->expdest);
+		}
+		break;
+	case '0':
+		p = psh->arg0;
+		STRTODEST(p);
+		break;
+	default:
+		if (is_digit(*name)) {
+			num = atoi(name);
+			if (num > 0 && num <= psh->shellparam.nparam) {
+				p = psh->shellparam.p[num - 1];
+				STRTODEST(p);
+			}
+		}
+		break;
+	}
+}
+
+
+
+/*
+ * Record the fact that we have to scan this region of the
+ * string for IFS characters.
+ */
+
+STATIC void
+recordregion(shinstance *psh, int start, int end, int inquotes)
+{
+	struct ifsregion *ifsp;
+
+	if (psh->ifslastp == NULL) {
+		ifsp = &psh->ifsfirst;
+	} else {
+		if (psh->ifslastp->endoff == start
+		    && psh->ifslastp->inquotes == inquotes) {
+			/* extend previous area */
+			psh->ifslastp->endoff = end;
+			return;
+		}
+		ifsp = (struct ifsregion *)ckmalloc(psh, sizeof (struct ifsregion));
+		psh->ifslastp->next = ifsp;
+	}
+	psh->ifslastp = ifsp;
+	psh->ifslastp->next = NULL;
+	psh->ifslastp->begoff = start;
+	psh->ifslastp->endoff = end;
+	psh->ifslastp->inquotes = inquotes;
+}
+
+
+
+/*
+ * Break the argument string into pieces based upon IFS and add the
+ * strings to the argument list.  The regions of the string to be
+ * searched for IFS characters have been stored by recordregion.
+ */
+STATIC void
+ifsbreakup(shinstance *psh, char *string, struct arglist *arglist)
+{
+	struct ifsregion *ifsp;
+	struct strlist *sp;
+	char *start;
+	char *p;
+	char *q;
+	const char *ifs;
+	const char *ifsspc;
+	int inquotes;
+
+	start = string;
+	ifsspc = NULL;
+	inquotes = 0;
+
+	if (psh->ifslastp == NULL) {
+		/* Return entire argument, IFS doesn't apply to any of it */
+		sp = (struct strlist *)stalloc(psh, sizeof *sp);
+		sp->text = start;
+		*arglist->lastp = sp;
+		arglist->lastp = &sp->next;
+		return;
+	}
+
+	ifs = ifsset(psh) ? ifsval(psh) : " \t\n";
+
+	for (ifsp = &psh->ifsfirst; ifsp != NULL; ifsp = ifsp->next) {
+		p = string + ifsp->begoff;
+		inquotes = ifsp->inquotes;
+		ifsspc = NULL;
+		while (p < string + ifsp->endoff) {
+			q = p;
+			if (*p == CTLESC)
+				p++;
+			if (inquotes) {
+				/* Only NULs (probably from "$@") end args */
+				if (*p != 0) {
+					p++;
+					continue;
+				}
+			} else {
+				if (!strchr(ifs, *p)) {
+					p++;
+					continue;
+				}
+				ifsspc = strchr(" \t\n", *p);
+
+				/* Ignore IFS whitespace at start */
+				if (q == start && ifsspc != NULL) {
+					p++;
+					start = p;
+					continue;
+				}
+			}
+
+			/* Save this argument... */
+			*q = '\0';
+			sp = (struct strlist *)stalloc(psh, sizeof *sp);
+			sp->text = start;
+			*arglist->lastp = sp;
+			arglist->lastp = &sp->next;
+			p++;
+
+			if (ifsspc != NULL) {
+				/* Ignore further trailing IFS whitespace */
+				for (; p < string + ifsp->endoff; p++) {
+					q = p;
+					if (*p == CTLESC)
+						p++;
+					if (strchr(ifs, *p) == NULL) {
+						p = q;
+						break;
+					}
+					if (strchr(" \t\n", *p) == NULL) {
+						p++;
+						break;
+					}
+				}
+			}
+			start = p;
+		}
+	}
+
+	/*
+	 * Save anything left as an argument.
+	 * Traditionally we have treated 'IFS=':'; set -- x$IFS' as
+	 * generating 2 arguments, the second of which is empty.
+	 * Some recent clarification of the Posix spec say that it
+	 * should only generate one....
+	 */
+	if (*start /* || (!ifsspc && start > string) */) {
+		sp = (struct strlist *)stalloc(psh, sizeof *sp);
+		sp->text = start;
+		*arglist->lastp = sp;
+		arglist->lastp = &sp->next;
+	}
+}
+
+STATIC void
+ifsfree(shinstance *psh)
+{
+	while (psh->ifsfirst.next != NULL) {
+		struct ifsregion *ifsp;
+		INTOFF;
+		ifsp = psh->ifsfirst.next->next;
+		ckfree(psh, psh->ifsfirst.next);
+		psh->ifsfirst.next = ifsp;
+		INTON;
+	}
+	psh->ifslastp = NULL;
+	psh->ifsfirst.next = NULL;
+}
+
+
+
+/*
+ * Expand shell metacharacters.  At this point, the only control characters
+ * should be escapes.  The results are stored in the list psh->exparg.
+ */
+
+//char *expdir;
+
+
+STATIC void
+expandmeta(shinstance *psh, struct strlist *str, int flag)
+{
+	char *p;
+	struct strlist **savelastp;
+	struct strlist *sp;
+	char c;
+	/* TODO - EXP_REDIR */
+
+	while (str) {
+		if (fflag(psh))
+			goto nometa;
+		p = str->text;
+		for (;;) {			/* fast check for meta chars */
+			if ((c = *p++) == '\0')
+				goto nometa;
+			if (c == '*' || c == '?' || c == '[' || c == '!')
+				break;
+		}
+		savelastp = psh->exparg.lastp;
+		INTOFF;
+		if (psh->expdir == NULL) {
+			size_t i = strlen(str->text);
+			psh->expdir = ckmalloc(psh, i < 2048 ? 2048 : i); /* XXX */
+		}
+
+		expmeta(psh, psh->expdir, str->text);
+		ckfree(psh, psh->expdir);
+		psh->expdir = NULL;
+		INTON;
+		if (psh->exparg.lastp == savelastp) {
+			/*
+			 * no matches
+			 */
+nometa:
+			*psh->exparg.lastp = str;
+			rmescapes(psh, str->text);
+			psh->exparg.lastp = &str->next;
+		} else {
+			*psh->exparg.lastp = NULL;
+			*savelastp = sp = expsort(*savelastp);
+			while (sp->next != NULL)
+				sp = sp->next;
+			psh->exparg.lastp = &sp->next;
+		}
+		str = str->next;
+	}
+}
+
+
+/*
+ * Do metacharacter (i.e. *, ?, [...]) expansion.
+ */
+
+STATIC void
+expmeta(shinstance *psh, char *enddir, char *name)
+{
+	char *p;
+	const char *cp;
+	char *q;
+	char *start;
+	char *endname;
+	int metaflag;
+	struct stat statb;
+	shdir *dirp;
+	shdirent *dp;
+	int atend;
+	int matchdot;
+
+	metaflag = 0;
+	start = name;
+	for (p = name ; ; p++) {
+		if (*p == '*' || *p == '?')
+			metaflag = 1;
+		else if (*p == '[') {
+			q = p + 1;
+			if (*q == '!')
+				q++;
+			for (;;) {
+				while (*q == CTLQUOTEMARK)
+					q++;
+				if (*q == CTLESC)
+					q++;
+				if (*q == '/' || *q == '\0')
+					break;
+				if (*++q == ']') {
+					metaflag = 1;
+					break;
+				}
+			}
+		} else if (*p == '!' && p[1] == '!'	&& (p == name || p[-1] == '/')) {
+			metaflag = 1;
+		} else if (*p == '\0')
+			break;
+		else if (*p == CTLQUOTEMARK)
+			continue;
+		else if (*p == CTLESC)
+			p++;
+		if (*p == '/') {
+			if (metaflag)
+				break;
+			start = p + 1;
+		}
+	}
+	if (metaflag == 0) {	/* we've reached the end of the file name */
+		if (enddir != psh->expdir)
+			metaflag++;
+		for (p = name ; ; p++) {
+			if (*p == CTLQUOTEMARK)
+				continue;
+			if (*p == CTLESC)
+				p++;
+			*enddir++ = *p;
+			if (*p == '\0')
+				break;
+		}
+		if (metaflag == 0 || shfile_lstat(&psh->fdtab, psh->expdir, &statb) >= 0)
+			addfname(psh, psh->expdir);
+		TRACE2((psh, "expandarg: return #1 (metaflag=%d)\n", metaflag));
+		return;
+	}
+	endname = p;
+	if (start != name) {
+		p = name;
+		while (p < start) {
+			while (*p == CTLQUOTEMARK)
+				p++;
+			if (*p == CTLESC)
+				p++;
+			*enddir++ = *p++;
+		}
+	}
+	if (enddir == psh->expdir) {
+		cp = ".";
+	} else if (enddir == psh->expdir + 1 && *psh->expdir == '/') {
+		cp = "/";
+	} else {
+		cp = psh->expdir;
+		enddir[-1] = '\0';
+	}
+	if ((dirp = shfile_opendir(&psh->fdtab, cp)) == NULL) {
+		TRACE2((psh, "expandarg: return #2 (shfile_opendir(,%s) failed)\n", cp));
+		return;
+	}
+	if (enddir != psh->expdir)
+		enddir[-1] = '/';
+	if (*endname == 0) {
+		atend = 1;
+	} else {
+		atend = 0;
+		*endname++ = '\0';
+	}
+	matchdot = 0;
+	p = start;
+	while (*p == CTLQUOTEMARK)
+		p++;
+	if (*p == CTLESC)
+		p++;
+	if (*p == '.')
+		matchdot++;
+	while (! int_pending() && (dp = shfile_readdir(dirp)) != NULL) {
+		if (dp->name[0] == '.' && ! matchdot)
+			continue;
+		if (patmatch(psh, start, dp->name, 0)) {
+			if (atend) {
+				scopy(dp->name, enddir);
+				addfname(psh, psh->expdir);
+			} else {
+				for (p = enddir, cp = dp->name;
+				     (*p++ = *cp++) != '\0';)
+					continue;
+				p[-1] = '/';
+				expmeta(psh, p, endname);
+			}
+		}
+	}
+	shfile_closedir(dirp);
+	if (! atend)
+		endname[-1] = '/';
+}
+
+
+/*
+ * Add a file name to the list.
+ */
+
+STATIC void
+addfname(shinstance *psh, char *name)
+{
+	char *p;
+	struct strlist *sp;
+
+	p = stalloc(psh, strlen(name) + 1);
+	scopy(name, p);
+	sp = (struct strlist *)stalloc(psh, sizeof *sp);
+	sp->text = p;
+	*psh->exparg.lastp = sp;
+	psh->exparg.lastp = &sp->next;
+}
+
+
+/*
+ * Sort the results of file name expansion.  It calculates the number of
+ * strings to sort and then calls msort (short for merge sort) to do the
+ * work.
+ */
+
+STATIC struct strlist *
+expsort(struct strlist *str)
+{
+	int len;
+	struct strlist *sp;
+
+	len = 0;
+	for (sp = str ; sp ; sp = sp->next)
+		len++;
+	return msort(str, len);
+}
+
+
+STATIC struct strlist *
+msort(struct strlist *list, int len)
+{
+	struct strlist *p, *q = NULL;
+	struct strlist **lpp;
+	int half;
+	int n;
+
+	if (len <= 1)
+		return list;
+	half = len >> 1;
+	p = list;
+	for (n = half ; --n >= 0 ; ) {
+		q = p;
+		p = p->next;
+	}
+	q->next = NULL;			/* terminate first half of list */
+	q = msort(list, half);		/* sort first half of list */
+	p = msort(p, len - half);		/* sort second half */
+	lpp = &list;
+	for (;;) {
+		if (strcmp(p->text, q->text) < 0) {
+			*lpp = p;
+			lpp = &p->next;
+			if ((p = *lpp) == NULL) {
+				*lpp = q;
+				break;
+			}
+		} else {
+			*lpp = q;
+			lpp = &q->next;
+			if ((q = *lpp) == NULL) {
+				*lpp = p;
+				break;
+			}
+		}
+	}
+	return list;
+}
+
+
+
+/*
+ * Returns true if the pattern matches the string.
+ */
+
+int
+patmatch(shinstance *psh, char *pattern, char *string, int squoted)
+{
+#ifdef notdef
+	if (pattern[0] == '!' && pattern[1] == '!')
+		return 1 - pmatch(pattern + 2, string);
+	else
+#endif
+		return pmatch(pattern, string, squoted);
+}
+
+
+STATIC int
+pmatch(char *pattern, char *string, int squoted)
+{
+	char *p, *q;
+	char c;
+
+	p = pattern;
+	q = string;
+	for (;;) {
+		switch (c = *p++) {
+		case '\0':
+			goto breakloop;
+		case CTLESC:
+			if (squoted && *q == CTLESC)
+				q++;
+			if (*q++ != *p++)
+				return 0;
+			break;
+		case CTLQUOTEMARK:
+			continue;
+		case '?':
+			if (squoted && *q == CTLESC)
+				q++;
+			if (*q++ == '\0')
+				return 0;
+			break;
+		case '*':
+			c = *p;
+			while (c == CTLQUOTEMARK || c == '*')
+				c = *++p;
+			if (c != CTLESC &&  c != CTLQUOTEMARK &&
+			    c != '?' && c != '*' && c != '[') {
+				while (*q != c) {
+					if (squoted && *q == CTLESC &&
+					    q[1] == c)
+						break;
+					if (*q == '\0')
+						return 0;
+					if (squoted && *q == CTLESC)
+						q++;
+					q++;
+				}
+			}
+			do {
+				if (pmatch(p, q, squoted))
+					return 1;
+				if (squoted && *q == CTLESC)
+					q++;
+			} while (*q++ != '\0');
+			return 0;
+		case '[': {
+			char *endp;
+			int invert, found;
+			char chr;
+
+			endp = p;
+			if (*endp == '!')
+				endp++;
+			for (;;) {
+				while (*endp == CTLQUOTEMARK)
+					endp++;
+				if (*endp == '\0')
+					goto dft;		/* no matching ] */
+				if (*endp == CTLESC)
+					endp++;
+				if (*++endp == ']')
+					break;
+			}
+			invert = 0;
+			if (*p == '!') {
+				invert++;
+				p++;
+			}
+			found = 0;
+			chr = *q++;
+			if (squoted && chr == CTLESC)
+				chr = *q++;
+			if (chr == '\0')
+				return 0;
+			c = *p++;
+			do {
+				if (c == CTLQUOTEMARK)
+					continue;
+				if (c == CTLESC)
+					c = *p++;
+				if (*p == '-' && p[1] != ']') {
+					p++;
+					while (*p == CTLQUOTEMARK)
+						p++;
+					if (*p == CTLESC)
+						p++;
+					if (chr >= c && chr <= *p)
+						found = 1;
+					p++;
+				} else {
+					if (chr == c)
+						found = 1;
+				}
+			} while ((c = *p++) != ']');
+			if (found == invert)
+				return 0;
+			break;
+		}
+dft:	        default:
+			if (squoted && *q == CTLESC)
+				q++;
+			if (*q++ != c)
+				return 0;
+			break;
+		}
+	}
+breakloop:
+	if (*q != '\0')
+		return 0;
+	return 1;
+}
+
+
+
+/*
+ * Remove any CTLESC characters from a string.
+ */
+
+void
+rmescapes(shinstance *psh, char *str)
+{
+	char *p, *q;
+
+	p = str;
+	while (*p != CTLESC && *p != CTLQUOTEMARK) {
+		if (*p++ == '\0')
+			return;
+	}
+	q = p;
+	while (*p) {
+		if (*p == CTLQUOTEMARK) {
+			p++;
+			continue;
+		}
+		if (*p == CTLESC)
+			p++;
+		*q++ = *p++;
+	}
+	*q = '\0';
+}
+
+
+
+/*
+ * See if a pattern matches in a case statement.
+ */
+
+int
+casematch(shinstance *psh, union node *pattern, char *val)
+{
+	struct stackmark smark;
+	int result;
+	char *p;
+
+	setstackmark(psh, &smark);
+	psh->argbackq = pattern->narg.backquote;
+	STARTSTACKSTR(psh, psh->expdest);
+	psh->ifslastp = NULL;
+	argstr(psh, pattern->narg.text, EXP_TILDE | EXP_CASE);
+	STPUTC(psh, '\0', psh->expdest);
+	p = grabstackstr(psh, psh->expdest);
+	result = patmatch(psh, p, val, 0);
+	popstackmark(psh, &smark);
+	return result;
+}
+
+/*
+ * Our own itoa().
+ */
+
+STATIC char *
+cvtnum(shinstance *psh, int num, char *buf)
+{
+	char temp[32];
+	int neg = num < 0;
+	char *p = temp + 31;
+
+	temp[31] = '\0';
+
+	do {
+		*--p = num % 10 + '0';
+	} while ((num /= 10) != 0);
+
+	if (neg)
+		*--p = '-';
+
+	while (*p)
+		STPUTC(psh, *p++, buf);
+	return buf;
+}
+
+STATIC char *
+cvtnum64(shinstance *psh, KI64 num, char *buf)
+{
+	char temp[32];
+	int neg = num < 0;
+	char *p = temp + 31;
+
+	temp[31] = '\0';
+
+	do {
+		*--p = num % 10 + '0';
+	} while ((num /= 10) != 0);
+
+	if (neg)
+		*--p = '-';
+
+	while (*p)
+		STPUTC(psh, *p++, buf);
+	return buf;
+}
+
+/*
+ * Do most of the work for wordexp(3).
+ */
+
+int
+wordexpcmd(shinstance *psh, int argc, char **argv)
+{
+	size_t len;
+	int i;
+
+	out1fmt(psh, "%d", argc - 1);
+	out1c(psh, '\0');
+	for (i = 1, len = 0; i < argc; i++)
+		len += strlen(argv[i]);
+	out1fmt(psh, "%zd", len);
+	out1c(psh, '\0');
+	for (i = 1; i < argc; i++) {
+		out1str(psh, argv[i]);
+		out1c(psh, '\0');
+	}
+	return (0);
+}
diff --git a/src/kash/expand.h b/src/kash/expand.h
new file mode 100644
index 0000000..8987cb9
--- /dev/null
+++ b/src/kash/expand.h
@@ -0,0 +1,78 @@
+/*	$NetBSD: expand.h,v 1.16 2004/07/13 15:05:59 seb Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)expand.h	8.2 (Berkeley) 5/4/95
+ */
+
+#ifndef ___expand_h
+#define ___expand_h
+
+#include "shtypes.h"
+
+struct strlist {
+	struct strlist *next;
+	char *text;
+};
+
+
+struct arglist {
+	struct strlist *list;
+	struct strlist **lastp;
+};
+
+/*
+ * expandarg() flags
+ */
+#define EXP_FULL	0x1	/* perform word splitting & file globbing */
+#define EXP_TILDE	0x2	/* do normal tilde expansion */
+#define	EXP_VARTILDE	0x4	/* expand tildes in an assignment */
+#define	EXP_REDIR	0x8	/* file glob for a redirection (1 match only) */
+#define EXP_CASE	0x10	/* keeps quotes around for CASE pattern */
+#define EXP_IFS_SPLIT	0x20	/* need to record arguments for ifs breakup */
+
+
+union node;
+void expandhere(struct shinstance *, union node *, int);
+void expandarg(struct shinstance *, union node *, struct arglist *, int);
+int patmatch(struct shinstance *, char *, char *, int);
+void rmescapes(struct shinstance *, char *);
+int casematch(struct shinstance *, union node *, char *);
+int wordexpcmd(struct shinstance *, int, char **);
+
+/* From arith.y */
+int arith(struct shinstance *, const char *);
+int expcmd(struct shinstance *, int , char **);
+void arith_lex_reset(void);
+int yylex(void);
+
+#endif
diff --git a/src/kash/funcs/cmv b/src/kash/funcs/cmv
new file mode 100644
index 0000000..667f846
--- /dev/null
+++ b/src/kash/funcs/cmv
@@ -0,0 +1,50 @@
+#	$NetBSD: cmv,v 1.7 1995/05/11 21:31:05 christos Exp $
+# Copyright (c) 1991, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#	This product includes software developed by the University of
+#	California, Berkeley and its contributors.
+# 4. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)cmv	8.2 (Berkeley) 5/4/95
+
+# Conditional move--don't replace an existing file.
+
+cmv() {
+	if test $# != 2
+	then	echo "cmv: arg count"
+		return 2
+	fi
+	if test -f "$2" -o -w "$2"
+	then	echo "$2 exists"
+		return 2
+	fi
+	/bin/mv "$1" "$2"
+}
diff --git a/src/kash/funcs/dirs b/src/kash/funcs/dirs
new file mode 100644
index 0000000..68bb317
--- /dev/null
+++ b/src/kash/funcs/dirs
@@ -0,0 +1,74 @@
+#	$NetBSD: dirs,v 1.7 1995/05/11 21:31:08 christos Exp $
+# Copyright (c) 1991, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#	This product includes software developed by the University of
+#	California, Berkeley and its contributors.
+# 4. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)dirs	8.2 (Berkeley) 5/4/95
+
+# pushd, popd, and dirs --- written by Chris Bertin
+# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris
+# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW
+
+pushd () {
+	SAVE=`pwd`
+	if [ "$1" = "" ] 
+	then	if [ "$DSTACK" = "" ]
+		then	echo "pushd: directory stack empty."
+			return 1
+		fi
+		set $DSTACK
+		cd $1 || return
+		shift 1
+		DSTACK="$*"
+	else	cd $1 > /dev/null || return
+	fi
+	DSTACK="$SAVE $DSTACK"
+	dirs
+}
+
+popd () {
+	if [ "$DSTACK" = "" ] 
+	then	echo "popd: directory stack empty."
+		return 1
+	fi
+	set $DSTACK
+	cd $1
+	shift
+	DSTACK=$*
+	dirs
+}
+
+dirs () {
+	echo "`pwd` $DSTACK"
+	return 0
+}
diff --git a/src/kash/funcs/kill b/src/kash/funcs/kill
new file mode 100644
index 0000000..75b0180
--- /dev/null
+++ b/src/kash/funcs/kill
@@ -0,0 +1,50 @@
+#	$NetBSD: kill,v 1.7 1995/05/11 21:31:10 christos Exp $
+# Copyright (c) 1991, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#	This product includes software developed by the University of
+#	California, Berkeley and its contributors.
+# 4. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)kill	8.2 (Berkeley) 5/4/95
+
+# Convert job names to process ids and then run /bin/kill.
+
+kill() {
+	local args x
+	args=
+	for x in "$@"
+	do	case $x in
+		%*)	x=`jobid "$x"` ;;
+		esac
+		args="$args $x"
+	done
+	/bin/kill $args
+}
diff --git a/src/kash/funcs/login b/src/kash/funcs/login
new file mode 100644
index 0000000..7ae08b2
--- /dev/null
+++ b/src/kash/funcs/login
@@ -0,0 +1,39 @@
+#	$NetBSD: login,v 1.7 1995/05/11 21:31:11 christos Exp $
+# Copyright (c) 1991, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#	This product includes software developed by the University of
+#	California, Berkeley and its contributors.
+# 4. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)login	8.2 (Berkeley) 5/4/95
+
+# replaces the login builtin in the BSD shell
+login () exec login "$@"
diff --git a/src/kash/funcs/newgrp b/src/kash/funcs/newgrp
new file mode 100644
index 0000000..796a4f1
--- /dev/null
+++ b/src/kash/funcs/newgrp
@@ -0,0 +1,38 @@
+#	$NetBSD: newgrp,v 1.7 1995/05/11 21:31:12 christos Exp $
+# Copyright (c) 1991, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#	This product includes software developed by the University of
+#	California, Berkeley and its contributors.
+# 4. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)newgrp	8.2 (Berkeley) 5/4/95
+
+newgrp() exec newgrp "$@"
diff --git a/src/kash/funcs/popd b/src/kash/funcs/popd
new file mode 100644
index 0000000..b2b65d5
--- /dev/null
+++ b/src/kash/funcs/popd
@@ -0,0 +1,74 @@
+#	$NetBSD: popd,v 1.7 1995/05/11 21:31:13 christos Exp $
+# Copyright (c) 1991, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#	This product includes software developed by the University of
+#	California, Berkeley and its contributors.
+# 4. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)popd	8.2 (Berkeley) 5/4/95
+
+# pushd, popd, and dirs --- written by Chris Bertin
+# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris
+# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW
+
+pushd () {
+	SAVE=`pwd`
+	if [ "$1" = "" ] 
+	then	if [ "$DSTACK" = "" ]
+		then	echo "pushd: directory stack empty."
+			return 1
+		fi
+		set $DSTACK
+		cd $1 || return
+		shift 1
+		DSTACK="$*"
+	else	cd $1 > /dev/null || return
+	fi
+	DSTACK="$SAVE $DSTACK"
+	dirs
+}
+
+popd () {
+	if [ "$DSTACK" = "" ] 
+	then	echo "popd: directory stack empty."
+		return 1
+	fi
+	set $DSTACK
+	cd $1
+	shift
+	DSTACK=$*
+	dirs
+}
+
+dirs () {
+	echo "`pwd` $DSTACK"
+	return 0
+}
diff --git a/src/kash/funcs/pushd b/src/kash/funcs/pushd
new file mode 100644
index 0000000..b393038
--- /dev/null
+++ b/src/kash/funcs/pushd
@@ -0,0 +1,74 @@
+#	$NetBSD: pushd,v 1.7 1995/05/11 21:31:15 christos Exp $
+# Copyright (c) 1991, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#	This product includes software developed by the University of
+#	California, Berkeley and its contributors.
+# 4. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)pushd	8.2 (Berkeley) 5/4/95
+
+# pushd, popd, and dirs --- written by Chris Bertin
+# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris
+# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW
+
+pushd () {
+	SAVE=`pwd`
+	if [ "$1" = "" ] 
+	then	if [ "$DSTACK" = "" ]
+		then	echo "pushd: directory stack empty."
+			return 1
+		fi
+		set $DSTACK
+		cd $1 || return
+		shift 1
+		DSTACK="$*"
+	else	cd $1 > /dev/null || return
+	fi
+	DSTACK="$SAVE $DSTACK"
+	dirs
+}
+
+popd () {
+	if [ "$DSTACK" = "" ] 
+	then	echo "popd: directory stack empty."
+		return 1
+	fi
+	set $DSTACK
+	cd $1
+	shift
+	DSTACK=$*
+	dirs
+}
+
+dirs () {
+	echo "`pwd` $DSTACK"
+	return 0
+}
diff --git a/src/kash/funcs/suspend b/src/kash/funcs/suspend
new file mode 100644
index 0000000..8a4197d
--- /dev/null
+++ b/src/kash/funcs/suspend
@@ -0,0 +1,42 @@
+#	$NetBSD: suspend,v 1.7 1995/05/11 21:31:17 christos Exp $
+# Copyright (c) 1991, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#	This product includes software developed by the University of
+#	California, Berkeley and its contributors.
+# 4. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)suspend	8.2 (Berkeley) 5/4/95
+
+suspend() {
+	local -
+	set +j
+	kill -TSTP 0
+}
diff --git a/src/kash/generated/arith.c b/src/kash/generated/arith.c
new file mode 100644
index 0000000..1f6b6e0
--- /dev/null
+++ b/src/kash/generated/arith.c
@@ -0,0 +1,748 @@
+#ifndef lint
+static const char yysccsid[] = "@(#)yaccpar	1.9 (Berkeley) 02/21/93";
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#define YYBYACC 1
+#define YYMAJOR 1
+#define YYMINOR 9
+#define YYPATCH 20091027
+
+#define YYEMPTY        (-1)
+#define yyclearin      (yychar = YYEMPTY)
+#define yyerrok        (yyerrflag = 0)
+#define YYRECOVERING() (yyerrflag != 0)
+
+/* compatibility with bison */
+#ifdef YYPARSE_PARAM
+/* compatibility with FreeBSD */
+#ifdef YYPARSE_PARAM_TYPE
+#define YYPARSE_DECL() yyparse(YYPARSE_PARAM_TYPE YYPARSE_PARAM)
+#else
+#define YYPARSE_DECL() yyparse(void *YYPARSE_PARAM)
+#endif
+#else
+#define YYPARSE_DECL() yyparse(void)
+#endif /* YYPARSE_PARAM */
+
+extern int YYPARSE_DECL();
+
+static int yygrowstack(void);
+#define YYPREFIX "yy"
+/*	$NetBSD: arith.y,v 1.17 2003/09/17 17:33:36 jmmv Exp $	*/
+
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)arith.y	8.3 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: arith.y,v 1.17 2003/09/17 17:33:36 jmmv Exp $");
+#endif /* not lint */
+#endif
+
+#include <stdlib.h>
+#include "expand.h"
+#include "shell.h"
+#include "error.h"
+#include "output.h"
+#include "memalloc.h"
+#include "shinstance.h"
+
+shinstance *arith_psh;
+const char *arith_buf, *arith_startbuf;
+
+void yyerror(const char *);
+#ifdef TESTARITH
+int main(int , char *[]);
+int error(char *);
+#else
+# undef  malloc
+# define malloc(cb)        sh_malloc(NULL, (cb))
+# undef  realloc
+# define realloc(pv,cb)    sh_realloc(NULL, (pv), (cb))
+# undef  free
+# define free(pv)          sh_free(NULL, (pv))
+#endif
+
+#define ARITH_NUM 257
+#define ARITH_LPAREN 258
+#define ARITH_RPAREN 259
+#define ARITH_OR 260
+#define ARITH_AND 261
+#define ARITH_BOR 262
+#define ARITH_BXOR 263
+#define ARITH_BAND 264
+#define ARITH_EQ 265
+#define ARITH_NE 266
+#define ARITH_LT 267
+#define ARITH_GT 268
+#define ARITH_GE 269
+#define ARITH_LE 270
+#define ARITH_LSHIFT 271
+#define ARITH_RSHIFT 272
+#define ARITH_ADD 273
+#define ARITH_SUB 274
+#define ARITH_MUL 275
+#define ARITH_DIV 276
+#define ARITH_REM 277
+#define ARITH_UNARYMINUS 278
+#define ARITH_UNARYPLUS 279
+#define ARITH_NOT 280
+#define ARITH_BNOT 281
+#define YYERRCODE 256
+static const short yylhs[] = {                           -1,
+    0,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+    1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+    1,    1,    1,    1,    1,
+};
+static const short yylen[] = {                            2,
+    1,    3,    3,    3,    3,    3,    3,    3,    3,    3,
+    3,    3,    3,    3,    3,    3,    3,    3,    3,    3,
+    2,    2,    2,    2,    1,
+};
+static const short yydefred[] = {                         0,
+   25,    0,    0,    0,    0,    0,    0,    0,    0,   24,
+   23,   21,   22,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    2,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,   18,   19,   20,
+};
+static const short yydgoto[] = {                          7,
+    8,
+};
+static const short yysindex[] = {                      -255,
+    0, -255, -255, -255, -255, -255,    0,  -67,  -85,    0,
+    0,    0,    0, -255, -255, -255, -255, -255, -255, -255,
+ -255, -255, -255, -255, -255, -255, -255, -255, -255, -255,
+ -255,    0,  -50,  -34,  -19,  141, -261, -233, -233, -223,
+ -223, -223, -223, -253, -253, -248, -248,    0,    0,    0,
+};
+static const short yyrindex[] = {                         0,
+    0,    0,    0,    0,    0,    0,    0,   30,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,  143,  140,  136,  131,  125,  109,  117,   61,
+   73,   85,   97,   33,   47,    1,   17,    0,    0,    0,
+};
+static const short yygindex[] = {                         0,
+  142,
+};
+#define YYTABLESIZE 418
+static const short yytable[] = {                          0,
+   16,    1,    2,   19,   20,   21,   22,   23,   24,   25,
+   26,   27,   28,   29,   30,   31,   17,    3,    4,   27,
+   28,   29,   30,   31,    5,    6,   29,   30,   31,    1,
+    0,    0,   14,   21,   22,   23,   24,   25,   26,   27,
+   28,   29,   30,   31,    0,    0,   15,   25,   26,   27,
+   28,   29,   30,   31,    0,    0,    0,    0,    0,    0,
+   11,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    9,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,   10,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,   12,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    8,    0,
+    0,    0,    0,    0,    0,    0,   13,    0,    0,    0,
+    0,    0,    0,    0,    7,    0,    0,    0,    0,    0,
+    6,    0,    0,    0,    0,    5,    0,    0,    0,    4,
+    0,    0,    3,    9,   10,   11,   12,   13,    0,    0,
+    0,    0,    0,    0,    0,   33,   34,   35,   36,   37,
+   38,   39,   40,   41,   42,   43,   44,   45,   46,   47,
+   48,   49,   50,   32,   14,   15,   16,   17,   18,   19,
+   20,   21,   22,   23,   24,   25,   26,   27,   28,   29,
+   30,   31,   14,   15,   16,   17,   18,   19,   20,   21,
+   22,   23,   24,   25,   26,   27,   28,   29,   30,   31,
+   15,   16,   17,   18,   19,   20,   21,   22,   23,   24,
+   25,   26,   27,   28,   29,   30,   31,   16,   17,   18,
+   19,   20,   21,   22,   23,   24,   25,   26,   27,   28,
+   29,   30,   31,   17,   18,   19,   20,   21,   22,   23,
+   24,   25,   26,   27,   28,   29,   30,   31,    0,   16,
+   16,   16,   16,   16,   16,   16,   16,   16,   16,   16,
+   16,   16,   16,   16,   16,   17,   17,   17,   17,   17,
+   17,   17,   17,   17,   17,   17,   17,   17,   17,   17,
+   17,   14,   14,   14,   14,   14,   14,   14,   14,   14,
+   14,   14,   14,   14,   14,   15,   15,   15,   15,   15,
+   15,   15,   15,   15,   15,   15,   15,   15,   15,   11,
+   11,   11,   11,   11,   11,   11,   11,   11,   11,   11,
+   11,    9,    9,    9,    9,    9,    9,    9,    9,    9,
+    9,    9,    9,   10,   10,   10,   10,   10,   10,   10,
+   10,   10,   10,   10,   10,   12,   12,   12,   12,   12,
+   12,   12,   12,   12,   12,   12,   12,    8,    8,    8,
+    8,    8,    8,    8,    8,   13,   13,   13,   13,   13,
+   13,   13,   13,    7,    7,    7,    7,    7,    7,    6,
+    6,    6,    6,    6,    5,    5,    5,    5,    4,    4,
+    4,    3,    3,    0,   18,   19,   20,   21,   22,   23,
+   24,   25,   26,   27,   28,   29,   30,   31,
+};
+static const short yycheck[] = {                         -1,
+    0,  257,  258,  265,  266,  267,  268,  269,  270,  271,
+  272,  273,  274,  275,  276,  277,    0,  273,  274,  273,
+  274,  275,  276,  277,  280,  281,  275,  276,  277,    0,
+   -1,   -1,    0,  267,  268,  269,  270,  271,  272,  273,
+  274,  275,  276,  277,   -1,   -1,    0,  271,  272,  273,
+  274,  275,  276,  277,   -1,   -1,   -1,   -1,   -1,   -1,
+    0,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,    0,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,    0,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,    0,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,    0,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,    0,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,    0,   -1,   -1,   -1,   -1,   -1,
+    0,   -1,   -1,   -1,   -1,    0,   -1,   -1,   -1,    0,
+   -1,   -1,    0,    2,    3,    4,    5,    6,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   14,   15,   16,   17,   18,
+   19,   20,   21,   22,   23,   24,   25,   26,   27,   28,
+   29,   30,   31,  259,  260,  261,  262,  263,  264,  265,
+  266,  267,  268,  269,  270,  271,  272,  273,  274,  275,
+  276,  277,  260,  261,  262,  263,  264,  265,  266,  267,
+  268,  269,  270,  271,  272,  273,  274,  275,  276,  277,
+  261,  262,  263,  264,  265,  266,  267,  268,  269,  270,
+  271,  272,  273,  274,  275,  276,  277,  262,  263,  264,
+  265,  266,  267,  268,  269,  270,  271,  272,  273,  274,
+  275,  276,  277,  263,  264,  265,  266,  267,  268,  269,
+  270,  271,  272,  273,  274,  275,  276,  277,   -1,  259,
+  260,  261,  262,  263,  264,  265,  266,  267,  268,  269,
+  270,  271,  272,  273,  274,  259,  260,  261,  262,  263,
+  264,  265,  266,  267,  268,  269,  270,  271,  272,  273,
+  274,  259,  260,  261,  262,  263,  264,  265,  266,  267,
+  268,  269,  270,  271,  272,  259,  260,  261,  262,  263,
+  264,  265,  266,  267,  268,  269,  270,  271,  272,  259,
+  260,  261,  262,  263,  264,  265,  266,  267,  268,  269,
+  270,  259,  260,  261,  262,  263,  264,  265,  266,  267,
+  268,  269,  270,  259,  260,  261,  262,  263,  264,  265,
+  266,  267,  268,  269,  270,  259,  260,  261,  262,  263,
+  264,  265,  266,  267,  268,  269,  270,  259,  260,  261,
+  262,  263,  264,  265,  266,  259,  260,  261,  262,  263,
+  264,  265,  266,  259,  260,  261,  262,  263,  264,  259,
+  260,  261,  262,  263,  259,  260,  261,  262,  259,  260,
+  261,  259,  260,   -1,  264,  265,  266,  267,  268,  269,
+  270,  271,  272,  273,  274,  275,  276,  277,
+};
+#define YYFINAL 7
+#ifndef YYDEBUG
+#define YYDEBUG 0
+#endif
+#define YYMAXTOKEN 281
+#if YYDEBUG
+static const char *yyname[] = {
+
+"end-of-file",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"ARITH_NUM","ARITH_LPAREN",
+"ARITH_RPAREN","ARITH_OR","ARITH_AND","ARITH_BOR","ARITH_BXOR","ARITH_BAND",
+"ARITH_EQ","ARITH_NE","ARITH_LT","ARITH_GT","ARITH_GE","ARITH_LE",
+"ARITH_LSHIFT","ARITH_RSHIFT","ARITH_ADD","ARITH_SUB","ARITH_MUL","ARITH_DIV",
+"ARITH_REM","ARITH_UNARYMINUS","ARITH_UNARYPLUS","ARITH_NOT","ARITH_BNOT",
+};
+static const char *yyrule[] = {
+"$accept : exp",
+"exp : expr",
+"expr : ARITH_LPAREN expr ARITH_RPAREN",
+"expr : expr ARITH_OR expr",
+"expr : expr ARITH_AND expr",
+"expr : expr ARITH_BOR expr",
+"expr : expr ARITH_BXOR expr",
+"expr : expr ARITH_BAND expr",
+"expr : expr ARITH_EQ expr",
+"expr : expr ARITH_GT expr",
+"expr : expr ARITH_GE expr",
+"expr : expr ARITH_LT expr",
+"expr : expr ARITH_LE expr",
+"expr : expr ARITH_NE expr",
+"expr : expr ARITH_LSHIFT expr",
+"expr : expr ARITH_RSHIFT expr",
+"expr : expr ARITH_ADD expr",
+"expr : expr ARITH_SUB expr",
+"expr : expr ARITH_MUL expr",
+"expr : expr ARITH_DIV expr",
+"expr : expr ARITH_REM expr",
+"expr : ARITH_NOT expr",
+"expr : ARITH_BNOT expr",
+"expr : ARITH_SUB expr",
+"expr : ARITH_ADD expr",
+"expr : ARITH_NUM",
+
+};
+#endif
+#ifndef YYSTYPE
+typedef int YYSTYPE;
+#endif
+#if YYDEBUG
+#include <stdio.h>
+#endif
+
+/* define the initial stack-sizes */
+#ifdef YYSTACKSIZE
+#undef YYMAXDEPTH
+#define YYMAXDEPTH  YYSTACKSIZE
+#else
+#ifdef YYMAXDEPTH
+#define YYSTACKSIZE YYMAXDEPTH
+#else
+#define YYSTACKSIZE 500
+#define YYMAXDEPTH  500
+#endif
+#endif
+
+#define YYINITSTACKSIZE 500
+
+int      yydebug;
+int      yynerrs;
+int      yyerrflag;
+int      yychar;
+short   *yyssp;
+YYSTYPE *yyvsp;
+YYSTYPE  yyval;
+YYSTYPE  yylval;
+
+/* variables for the parser stack */
+static short   *yyss;
+static short   *yysslim;
+static YYSTYPE *yyvs;
+static unsigned yystacksize;
+int
+arith(shinstance *psh, const char *s)
+{
+	long result;
+
+	INTOFF;
+/* todo lock */
+   arith_psh = psh;
+	arith_buf = arith_startbuf = s;
+	result = yyparse();
+	arith_lex_reset();	/* reprime lex */
+   arith_psh = NULL;
+/* todo unlock */
+	INTON;
+
+	return (result);
+}
+
+
+/*
+ *  The exp(1) builtin.
+ */
+int
+expcmd(shinstance *psh, int argc, char **argv)
+{
+	const char *p;
+	char *concat;
+	char **ap;
+	long i;
+
+	if (argc > 1) {
+		p = argv[1];
+		if (argc > 2) {
+			/*
+			 * concatenate arguments
+			 */
+			STARTSTACKSTR(psh, concat);
+			ap = argv + 2;
+			for (;;) {
+				while (*p)
+					STPUTC(psh, *p++, concat);
+				if ((p = *ap++) == NULL)
+					break;
+				STPUTC(psh, ' ', concat);
+			}
+			STPUTC(psh, '\0', concat);
+			p = grabstackstr(psh, concat);
+		}
+	} else
+		p = "";
+
+	i = arith(psh, p);
+
+	out1fmt(psh, "%ld\n", i);
+	return (! i);
+}
+
+/*************************/
+#ifdef TEST_ARITH
+#include <stdio.h>
+main(argc, argv)
+	char *argv[];
+{
+	printf("%d\n", exp(argv[1]));
+}
+error(s)
+	char *s;
+{
+	fprintf(stderr, "exp: %s\n", s);
+	exit(1);
+}
+#endif
+
+void
+yyerror(const char *s)
+{
+    shinstance *psh = arith_psh;
+#ifndef YYBISON /* yyerrok references yyerrstatus which is a local variable in yyparse().*/
+	yyerrok;
+#endif
+	yyclearin;
+	arith_lex_reset();	/* reprime lex */
+/** @todo unlock */
+	error(psh, "arithmetic expression: %s: \"%s\"", s, arith_startbuf);
+	/* NOTREACHED */
+}
+/* allocate initial stack or double stack size, up to YYMAXDEPTH */
+static int yygrowstack(void)
+{
+    int i;
+    unsigned newsize;
+    short *newss;
+    YYSTYPE *newvs;
+
+    if ((newsize = yystacksize) == 0)
+        newsize = YYINITSTACKSIZE;
+    else if (newsize >= YYMAXDEPTH)
+        return -1;
+    else if ((newsize *= 2) > YYMAXDEPTH)
+        newsize = YYMAXDEPTH;
+
+    i = yyssp - yyss;
+    newss = (yyss != 0)
+          ? (short *)realloc(yyss, newsize * sizeof(*newss))
+          : (short *)malloc(newsize * sizeof(*newss));
+    if (newss == 0)
+        return -1;
+
+    yyss  = newss;
+    yyssp = newss + i;
+    newvs = (yyvs != 0)
+          ? (YYSTYPE *)realloc(yyvs, newsize * sizeof(*newvs))
+          : (YYSTYPE *)malloc(newsize * sizeof(*newvs));
+    if (newvs == 0)
+        return -1;
+
+    yyvs = newvs;
+    yyvsp = newvs + i;
+    yystacksize = newsize;
+    yysslim = yyss + newsize - 1;
+    return 0;
+}
+
+#define YYABORT  goto yyabort
+#define YYREJECT goto yyabort
+#define YYACCEPT goto yyaccept
+#define YYERROR  goto yyerrlab
+
+int
+YYPARSE_DECL()
+{
+    int yym, yyn, yystate;
+#if YYDEBUG
+    const char *yys;
+
+    if ((yys = getenv("YYDEBUG")) != 0)
+    {
+        yyn = *yys;
+        if (yyn >= '0' && yyn <= '9')
+            yydebug = yyn - '0';
+    }
+#endif
+
+    yynerrs = 0;
+    yyerrflag = 0;
+    yychar = YYEMPTY;
+    yystate = 0;
+
+    if (yyss == NULL && yygrowstack()) goto yyoverflow;
+    yyssp = yyss;
+    yyvsp = yyvs;
+    yystate = 0;
+    *yyssp = 0;
+
+yyloop:
+    if ((yyn = yydefred[yystate]) != 0) goto yyreduce;
+    if (yychar < 0)
+    {
+        if ((yychar = yylex()) < 0) yychar = 0;
+#if YYDEBUG
+        if (yydebug)
+        {
+            yys = 0;
+            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
+            if (!yys) yys = "illegal-symbol";
+            printf("%sdebug: state %d, reading %d (%s)\n",
+                    YYPREFIX, yystate, yychar, yys);
+        }
+#endif
+    }
+    if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 &&
+            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
+    {
+#if YYDEBUG
+        if (yydebug)
+            printf("%sdebug: state %d, shifting to state %d\n",
+                    YYPREFIX, yystate, yytable[yyn]);
+#endif
+        if (yyssp >= yysslim && yygrowstack())
+        {
+            goto yyoverflow;
+        }
+        yystate = yytable[yyn];
+        *++yyssp = yytable[yyn];
+        *++yyvsp = yylval;
+        yychar = YYEMPTY;
+        if (yyerrflag > 0)  --yyerrflag;
+        goto yyloop;
+    }
+    if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 &&
+            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
+    {
+        yyn = yytable[yyn];
+        goto yyreduce;
+    }
+    if (yyerrflag) goto yyinrecovery;
+
+    yyerror("syntax error");
+
+    goto yyerrlab;
+
+yyerrlab:
+    ++yynerrs;
+
+yyinrecovery:
+    if (yyerrflag < 3)
+    {
+        yyerrflag = 3;
+        for (;;)
+        {
+            if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE) >= 0 &&
+                    yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE)
+            {
+#if YYDEBUG
+                if (yydebug)
+                    printf("%sdebug: state %d, error recovery shifting\
+ to state %d\n", YYPREFIX, *yyssp, yytable[yyn]);
+#endif
+                if (yyssp >= yysslim && yygrowstack())
+                {
+                    goto yyoverflow;
+                }
+                yystate = yytable[yyn];
+                *++yyssp = yytable[yyn];
+                *++yyvsp = yylval;
+                goto yyloop;
+            }
+            else
+            {
+#if YYDEBUG
+                if (yydebug)
+                    printf("%sdebug: error recovery discarding state %d\n",
+                            YYPREFIX, *yyssp);
+#endif
+                if (yyssp <= yyss) goto yyabort;
+                --yyssp;
+                --yyvsp;
+            }
+        }
+    }
+    else
+    {
+        if (yychar == 0) goto yyabort;
+#if YYDEBUG
+        if (yydebug)
+        {
+            yys = 0;
+            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
+            if (!yys) yys = "illegal-symbol";
+            printf("%sdebug: state %d, error recovery discards token %d (%s)\n",
+                    YYPREFIX, yystate, yychar, yys);
+        }
+#endif
+        yychar = YYEMPTY;
+        goto yyloop;
+    }
+
+yyreduce:
+#if YYDEBUG
+    if (yydebug)
+        printf("%sdebug: state %d, reducing by rule %d (%s)\n",
+                YYPREFIX, yystate, yyn, yyrule[yyn]);
+#endif
+    yym = yylen[yyn];
+    if (yym)
+        yyval = yyvsp[1-yym];
+    else
+        memset(&yyval, 0, sizeof yyval);
+    switch (yyn)
+    {
+case 1:
+	{
+			return (yyvsp[0]);
+		}
+break;
+case 2:
+	{ yyval = yyvsp[-1]; }
+break;
+case 3:
+	{ yyval = yyvsp[-2] ? yyvsp[-2] : yyvsp[0] ? yyvsp[0] : 0; }
+break;
+case 4:
+	{ yyval = yyvsp[-2] ? ( yyvsp[0] ? yyvsp[0] : 0 ) : 0; }
+break;
+case 5:
+	{ yyval = yyvsp[-2] | yyvsp[0]; }
+break;
+case 6:
+	{ yyval = yyvsp[-2] ^ yyvsp[0]; }
+break;
+case 7:
+	{ yyval = yyvsp[-2] & yyvsp[0]; }
+break;
+case 8:
+	{ yyval = yyvsp[-2] == yyvsp[0]; }
+break;
+case 9:
+	{ yyval = yyvsp[-2] > yyvsp[0]; }
+break;
+case 10:
+	{ yyval = yyvsp[-2] >= yyvsp[0]; }
+break;
+case 11:
+	{ yyval = yyvsp[-2] < yyvsp[0]; }
+break;
+case 12:
+	{ yyval = yyvsp[-2] <= yyvsp[0]; }
+break;
+case 13:
+	{ yyval = yyvsp[-2] != yyvsp[0]; }
+break;
+case 14:
+	{ yyval = yyvsp[-2] << yyvsp[0]; }
+break;
+case 15:
+	{ yyval = yyvsp[-2] >> yyvsp[0]; }
+break;
+case 16:
+	{ yyval = yyvsp[-2] + yyvsp[0]; }
+break;
+case 17:
+	{ yyval = yyvsp[-2] - yyvsp[0]; }
+break;
+case 18:
+	{ yyval = yyvsp[-2] * yyvsp[0]; }
+break;
+case 19:
+	{
+			if (yyvsp[0] == 0)
+				yyerror("division by zero");
+			yyval = yyvsp[-2] / yyvsp[0];
+			}
+break;
+case 20:
+	{
+			if (yyvsp[0] == 0)
+				yyerror("division by zero");
+			yyval = yyvsp[-2] % yyvsp[0];
+			}
+break;
+case 21:
+	{ yyval = !(yyvsp[0]); }
+break;
+case 22:
+	{ yyval = ~(yyvsp[0]); }
+break;
+case 23:
+	{ yyval = -(yyvsp[0]); }
+break;
+case 24:
+	{ yyval = yyvsp[0]; }
+break;
+    }
+    yyssp -= yym;
+    yystate = *yyssp;
+    yyvsp -= yym;
+    yym = yylhs[yyn];
+    if (yystate == 0 && yym == 0)
+    {
+#if YYDEBUG
+        if (yydebug)
+            printf("%sdebug: after reduction, shifting from state 0 to\
+ state %d\n", YYPREFIX, YYFINAL);
+#endif
+        yystate = YYFINAL;
+        *++yyssp = YYFINAL;
+        *++yyvsp = yyval;
+        if (yychar < 0)
+        {
+            if ((yychar = yylex()) < 0) yychar = 0;
+#if YYDEBUG
+            if (yydebug)
+            {
+                yys = 0;
+                if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
+                if (!yys) yys = "illegal-symbol";
+                printf("%sdebug: state %d, reading %d (%s)\n",
+                        YYPREFIX, YYFINAL, yychar, yys);
+            }
+#endif
+        }
+        if (yychar == 0) goto yyaccept;
+        goto yyloop;
+    }
+    if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 &&
+            yyn <= YYTABLESIZE && yycheck[yyn] == yystate)
+        yystate = yytable[yyn];
+    else
+        yystate = yydgoto[yym];
+#if YYDEBUG
+    if (yydebug)
+        printf("%sdebug: after reduction, shifting from state %d \
+to state %d\n", YYPREFIX, *yyssp, yystate);
+#endif
+    if (yyssp >= yysslim && yygrowstack())
+    {
+        goto yyoverflow;
+    }
+    *++yyssp = (short) yystate;
+    *++yyvsp = yyval;
+    goto yyloop;
+
+yyoverflow:
+    yyerror("yacc stack overflow");
+
+yyabort:
+    return (1);
+
+yyaccept:
+    return (0);
+}
diff --git a/src/kash/generated/arith.h b/src/kash/generated/arith.h
new file mode 100644
index 0000000..e1c5356
--- /dev/null
+++ b/src/kash/generated/arith.h
@@ -0,0 +1,25 @@
+#define ARITH_NUM 257
+#define ARITH_LPAREN 258
+#define ARITH_RPAREN 259
+#define ARITH_OR 260
+#define ARITH_AND 261
+#define ARITH_BOR 262
+#define ARITH_BXOR 263
+#define ARITH_BAND 264
+#define ARITH_EQ 265
+#define ARITH_NE 266
+#define ARITH_LT 267
+#define ARITH_GT 268
+#define ARITH_GE 269
+#define ARITH_LE 270
+#define ARITH_LSHIFT 271
+#define ARITH_RSHIFT 272
+#define ARITH_ADD 273
+#define ARITH_SUB 274
+#define ARITH_MUL 275
+#define ARITH_DIV 276
+#define ARITH_REM 277
+#define ARITH_UNARYMINUS 278
+#define ARITH_UNARYPLUS 279
+#define ARITH_NOT 280
+#define ARITH_BNOT 281
diff --git a/src/kash/generated/arith_lex.c b/src/kash/generated/arith_lex.c
new file mode 100644
index 0000000..72a582c
--- /dev/null
+++ b/src/kash/generated/arith_lex.c
@@ -0,0 +1,1731 @@
+#line 2 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/out/darwin.x86/release/obj/kash/arith_lex.c"
+
+#line 4 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/out/darwin.x86/release/obj/kash/arith_lex.c"
+
+#define  YY_INT_ALIGNED short int
+
+/* A lexical scanner generated by flex */
+
+#define FLEX_SCANNER
+#define YY_FLEX_MAJOR_VERSION 2
+#define YY_FLEX_MINOR_VERSION 5
+#define YY_FLEX_SUBMINOR_VERSION 33
+#if YY_FLEX_SUBMINOR_VERSION > 0
+#define FLEX_BETA
+#endif
+
+/* First, we deal with  platform-specific or compiler-specific issues. */
+
+/* begin standard C headers. */
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+
+/* end standard C headers. */
+
+/* flex integer type definitions */
+
+#ifndef FLEXINT_H
+#define FLEXINT_H
+
+/* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */
+
+#if __STDC_VERSION__ >= 199901L
+
+/* C99 says to define __STDC_LIMIT_MACROS before including stdint.h,
+ * if you want the limit (max/min) macros for int types. 
+ */
+#ifndef __STDC_LIMIT_MACROS
+#define __STDC_LIMIT_MACROS 1
+#endif
+
+#include <inttypes.h>
+typedef int8_t flex_int8_t;
+typedef uint8_t flex_uint8_t;
+typedef int16_t flex_int16_t;
+typedef uint16_t flex_uint16_t;
+typedef int32_t flex_int32_t;
+typedef uint32_t flex_uint32_t;
+#else
+typedef signed char flex_int8_t;
+typedef short int flex_int16_t;
+typedef int flex_int32_t;
+typedef unsigned char flex_uint8_t; 
+typedef unsigned short int flex_uint16_t;
+typedef unsigned int flex_uint32_t;
+#endif /* ! C99 */
+
+/* Limits of integral types. */
+#ifndef INT8_MIN
+#define INT8_MIN               (-128)
+#endif
+#ifndef INT16_MIN
+#define INT16_MIN              (-32767-1)
+#endif
+#ifndef INT32_MIN
+#define INT32_MIN              (-2147483647-1)
+#endif
+#ifndef INT8_MAX
+#define INT8_MAX               (127)
+#endif
+#ifndef INT16_MAX
+#define INT16_MAX              (32767)
+#endif
+#ifndef INT32_MAX
+#define INT32_MAX              (2147483647)
+#endif
+#ifndef UINT8_MAX
+#define UINT8_MAX              (255U)
+#endif
+#ifndef UINT16_MAX
+#define UINT16_MAX             (65535U)
+#endif
+#ifndef UINT32_MAX
+#define UINT32_MAX             (4294967295U)
+#endif
+
+#endif /* ! FLEXINT_H */
+
+#ifdef __cplusplus
+
+/* The "const" storage-class-modifier is valid. */
+#define YY_USE_CONST
+
+#else	/* ! __cplusplus */
+
+#if __STDC__
+
+#define YY_USE_CONST
+
+#endif	/* __STDC__ */
+#endif	/* ! __cplusplus */
+
+#ifdef YY_USE_CONST
+#define yyconst const
+#else
+#define yyconst
+#endif
+
+/* Returned upon end-of-file. */
+#define YY_NULL 0
+
+/* Promotes a possibly negative, possibly signed char to an unsigned
+ * integer for use as an array index.  If the signed char is negative,
+ * we want to instead treat it as an 8-bit unsigned char, hence the
+ * double cast.
+ */
+#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+
+/* Enter a start condition.  This macro really ought to take a parameter,
+ * but we do it the disgusting crufty way forced on us by the ()-less
+ * definition of BEGIN.
+ */
+#define BEGIN (yy_start) = 1 + 2 *
+
+/* Translate the current start state into a value that can be later handed
+ * to BEGIN to return to the state.  The YYSTATE alias is for lex
+ * compatibility.
+ */
+#define YY_START (((yy_start) - 1) / 2)
+#define YYSTATE YY_START
+
+/* Action number for EOF rule of a given start state. */
+#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
+
+/* Special action meaning "start processing a new file". */
+#define YY_NEW_FILE yyrestart(yyin  )
+
+#define YY_END_OF_BUFFER_CHAR 0
+
+/* Size of default input buffer. */
+#ifndef YY_BUF_SIZE
+#define YY_BUF_SIZE 16384
+#endif
+
+/* The state buf must be large enough to hold one state per character in the main buffer.
+ */
+#define YY_STATE_BUF_SIZE   ((YY_BUF_SIZE + 2) * sizeof(yy_state_type))
+
+#ifndef YY_TYPEDEF_YY_BUFFER_STATE
+#define YY_TYPEDEF_YY_BUFFER_STATE
+typedef struct yy_buffer_state *YY_BUFFER_STATE;
+#endif
+
+extern int yyleng;
+
+extern FILE *yyin, *yyout;
+
+#define EOB_ACT_CONTINUE_SCAN 0
+#define EOB_ACT_END_OF_FILE 1
+#define EOB_ACT_LAST_MATCH 2
+
+    #define YY_LESS_LINENO(n)
+    
+/* Return all but the first "n" matched characters back to the input stream. */
+#define yyless(n) \
+	do \
+		{ \
+		/* Undo effects of setting up yytext. */ \
+        int yyless_macro_arg = (n); \
+        YY_LESS_LINENO(yyless_macro_arg);\
+		*yy_cp = (yy_hold_char); \
+		YY_RESTORE_YY_MORE_OFFSET \
+		(yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
+		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
+		} \
+	while ( 0 )
+
+#define unput(c) yyunput( c, (yytext_ptr)  )
+
+/* The following is because we cannot portably get our hands on size_t
+ * (without autoconf's help, which isn't available because we want
+ * flex-generated scanners to compile on their own).
+ */
+
+#ifndef YY_TYPEDEF_YY_SIZE_T
+#define YY_TYPEDEF_YY_SIZE_T
+typedef unsigned int yy_size_t;
+#endif
+
+#ifndef YY_STRUCT_YY_BUFFER_STATE
+#define YY_STRUCT_YY_BUFFER_STATE
+struct yy_buffer_state
+	{
+	FILE *yy_input_file;
+
+	char *yy_ch_buf;		/* input buffer */
+	char *yy_buf_pos;		/* current position in input buffer */
+
+	/* Size of input buffer in bytes, not including room for EOB
+	 * characters.
+	 */
+	yy_size_t yy_buf_size;
+
+	/* Number of characters read into yy_ch_buf, not including EOB
+	 * characters.
+	 */
+	int yy_n_chars;
+
+	/* Whether we "own" the buffer - i.e., we know we created it,
+	 * and can realloc() it to grow it, and should free() it to
+	 * delete it.
+	 */
+	int yy_is_our_buffer;
+
+	/* Whether this is an "interactive" input source; if so, and
+	 * if we're using stdio for input, then we want to use getc()
+	 * instead of fread(), to make sure we stop fetching input after
+	 * each newline.
+	 */
+	int yy_is_interactive;
+
+	/* Whether we're considered to be at the beginning of a line.
+	 * If so, '^' rules will be active on the next match, otherwise
+	 * not.
+	 */
+	int yy_at_bol;
+
+    int yy_bs_lineno; /**< The line count. */
+    int yy_bs_column; /**< The column count. */
+    
+	/* Whether to try to fill the input buffer when we reach the
+	 * end of it.
+	 */
+	int yy_fill_buffer;
+
+	int yy_buffer_status;
+
+#define YY_BUFFER_NEW 0
+#define YY_BUFFER_NORMAL 1
+	/* When an EOF's been seen but there's still some text to process
+	 * then we mark the buffer as YY_EOF_PENDING, to indicate that we
+	 * shouldn't try reading from the input source any more.  We might
+	 * still have a bunch of tokens to match, though, because of
+	 * possible backing-up.
+	 *
+	 * When we actually see the EOF, we change the status to "new"
+	 * (via yyrestart()), so that the user can continue scanning by
+	 * just pointing yyin at a new input file.
+	 */
+#define YY_BUFFER_EOF_PENDING 2
+
+	};
+#endif /* !YY_STRUCT_YY_BUFFER_STATE */
+
+/* Stack of input buffers. */
+static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */
+static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */
+static YY_BUFFER_STATE * yy_buffer_stack = 0; /**< Stack as an array. */
+
+/* We provide macros for accessing buffer states in case in the
+ * future we want to put the buffer states in a more general
+ * "scanner state".
+ *
+ * Returns the top of the stack, or NULL.
+ */
+#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
+                          ? (yy_buffer_stack)[(yy_buffer_stack_top)] \
+                          : NULL)
+
+/* Same as previous macro, but useful when we know that the buffer stack is not
+ * NULL or when we need an lvalue. For internal use only.
+ */
+#define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)]
+
+/* yy_hold_char holds the character lost when yytext is formed. */
+static char yy_hold_char;
+static int yy_n_chars;		/* number of characters read into yy_ch_buf */
+int yyleng;
+
+/* Points to current character in buffer. */
+static char *yy_c_buf_p = (char *) 0;
+static int yy_init = 0;		/* whether we need to initialize */
+static int yy_start = 0;	/* start state number */
+
+/* Flag which is used to allow yywrap()'s to do buffer switches
+ * instead of setting up a fresh yyin.  A bit of a hack ...
+ */
+static int yy_did_buffer_switch_on_eof;
+
+void yyrestart (FILE *input_file  );
+void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer  );
+YY_BUFFER_STATE yy_create_buffer (FILE *file,int size  );
+void yy_delete_buffer (YY_BUFFER_STATE b  );
+void yy_flush_buffer (YY_BUFFER_STATE b  );
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer  );
+void yypop_buffer_state (void );
+
+static void yyensure_buffer_stack (void );
+static void yy_load_buffer_state (void );
+static void yy_init_buffer (YY_BUFFER_STATE b,FILE *file  );
+
+#define YY_FLUSH_BUFFER yy_flush_buffer(YY_CURRENT_BUFFER )
+
+YY_BUFFER_STATE yy_scan_buffer (char *base,yy_size_t size  );
+YY_BUFFER_STATE yy_scan_string (yyconst char *yy_str  );
+YY_BUFFER_STATE yy_scan_bytes (yyconst char *bytes,int len  );
+
+void *yyalloc (yy_size_t  );
+void *yyrealloc (void *,yy_size_t  );
+void yyfree (void *  );
+
+#define yy_new_buffer yy_create_buffer
+
+#define yy_set_interactive(is_interactive) \
+	{ \
+	if ( ! YY_CURRENT_BUFFER ){ \
+        yyensure_buffer_stack (); \
+		YY_CURRENT_BUFFER_LVALUE =    \
+            yy_create_buffer(yyin,YY_BUF_SIZE ); \
+	} \
+	YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
+	}
+
+#define yy_set_bol(at_bol) \
+	{ \
+	if ( ! YY_CURRENT_BUFFER ){\
+        yyensure_buffer_stack (); \
+		YY_CURRENT_BUFFER_LVALUE =    \
+            yy_create_buffer(yyin,YY_BUF_SIZE ); \
+	} \
+	YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
+	}
+
+#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
+
+/* Begin user sect3 */
+
+#define yywrap(n) 1
+#define YY_SKIP_YYWRAP
+
+typedef unsigned char YY_CHAR;
+
+FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
+
+typedef int yy_state_type;
+
+extern int yylineno;
+
+int yylineno = 1;
+
+extern char *yytext;
+#define yytext_ptr yytext
+
+static yy_state_type yy_get_previous_state (void );
+static yy_state_type yy_try_NUL_trans (yy_state_type current_state  );
+static int yy_get_next_buffer (void );
+static void yy_fatal_error (yyconst char msg[]  );
+
+/* Done after the current pattern has been matched and before the
+ * corresponding action - sets up yytext.
+ */
+#define YY_DO_BEFORE_ACTION \
+	(yytext_ptr) = yy_bp; \
+	yyleng = (size_t) (yy_cp - yy_bp); \
+	(yy_hold_char) = *yy_cp; \
+	*yy_cp = '\0'; \
+	(yy_c_buf_p) = yy_cp;
+
+#define YY_NUM_RULES 29
+#define YY_END_OF_BUFFER 30
+/* This struct is not used in this scanner,
+   but its presence is necessary. */
+struct yy_trans_info
+	{
+	flex_int32_t yy_verify;
+	flex_int32_t yy_nxt;
+	};
+static yyconst flex_int16_t yy_accept[39] =
+    {   0,
+        0,    0,   30,   28,    1,    1,   27,   23,   12,    6,
+        7,   21,   24,   25,   22,    3,    4,   17,   28,   15,
+        5,   11,   10,   26,   14,    9,    3,    0,    4,   19,
+       18,   13,   16,   20,    5,    8,    2,    0
+    } ;
+
+static yyconst flex_int32_t yy_ec[256] =
+    {   0,
+        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    2,    4,    1,    1,    1,    5,    6,    1,    7,
+        8,    9,   10,    1,   11,    1,   12,   13,   14,   14,
+       14,   14,   14,   14,   14,   15,   15,    1,    1,   16,
+       17,   18,    1,    1,   19,   19,   19,   19,   19,   19,
+       20,   20,   20,   20,   20,   20,   20,   20,   20,   20,
+       20,   20,   20,   20,   20,   20,   20,   20,   20,   20,
+        1,    1,    1,   21,   20,    1,   19,   19,   19,   19,
+
+       19,   19,   20,   20,   20,   20,   20,   20,   20,   20,
+       20,   20,   20,   20,   20,   20,   20,   20,   20,   22,
+       20,   20,    1,   23,    1,   24,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1
+    } ;
+
+static yyconst flex_int32_t yy_meta[25] =
+    {   0,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    2,    2,    2,    1,    1,    1,    2,    3,
+        1,    3,    1,    1
+    } ;
+
+static yyconst flex_int16_t yy_base[41] =
+    {   0,
+        0,    0,   47,   48,   48,   48,   29,   48,   39,   48,
+       48,   48,   48,   48,   48,   12,   14,   14,   27,   15,
+        0,   48,   20,   48,   48,   48,   22,    0,   24,   48,
+       48,   48,   48,   48,    0,   48,    0,   48,   38,   40
+    } ;
+
+static yyconst flex_int16_t yy_def[41] =
+    {   0,
+       38,    1,   38,   38,   38,   38,   38,   38,   38,   38,
+       38,   38,   38,   38,   38,   38,   38,   38,   38,   38,
+       39,   38,   38,   38,   38,   38,   38,   40,   38,   38,
+       38,   38,   38,   38,   39,   38,   40,    0,   38,   38
+    } ;
+
+static yyconst flex_int16_t yy_nxt[73] =
+    {   0,
+        4,    5,    6,    7,    8,    9,   10,   11,   12,   13,
+       14,   15,   16,   17,   17,   18,   19,   20,   21,   21,
+       22,   21,   23,   24,   27,   27,   29,   29,   29,   30,
+       31,   33,   34,   28,   27,   27,   29,   29,   29,   35,
+       35,   37,   36,   32,   26,   25,   38,    3,   38,   38,
+       38,   38,   38,   38,   38,   38,   38,   38,   38,   38,
+       38,   38,   38,   38,   38,   38,   38,   38,   38,   38,
+       38,   38
+    } ;
+
+static yyconst flex_int16_t yy_chk[73] =
+    {   0,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,   16,   16,   17,   17,   17,   18,
+       18,   20,   20,   16,   27,   27,   29,   29,   29,   39,
+       39,   40,   23,   19,    9,    7,    3,   38,   38,   38,
+       38,   38,   38,   38,   38,   38,   38,   38,   38,   38,
+       38,   38,   38,   38,   38,   38,   38,   38,   38,   38,
+       38,   38
+    } ;
+
+static yy_state_type yy_last_accepting_state;
+static char *yy_last_accepting_cpos;
+
+extern int yy_flex_debug;
+int yy_flex_debug = 0;
+
+/* The intent behind this definition is that it'll catch
+ * any uses of REJECT which flex missed.
+ */
+#define REJECT reject_used_but_not_detected
+#define yymore() yymore_used_but_not_detected
+#define YY_MORE_ADJ 0
+#define YY_RESTORE_YY_MORE_OFFSET
+char *yytext;
+#line 1 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+#define YY_NO_INPUT 1
+/** @todo %option reentrant */
+#line 33 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+/*	$NetBSD: arith_lex.l,v 1.13 2005/03/21 22:37:09 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)arith_lex.l	8.3 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: arith_lex.l,v 1.13 2005/03/21 22:37:09 dsl Exp $");
+#endif /* not lint */
+#endif
+
+#include <stdio.h>
+#include "arith.h"
+#include "error.h"
+#include "expand.h"
+#include "var.h"
+#include "shinstance.h"
+
+extern int yylval;
+extern shinstance *arith_psh;
+extern char *arith_buf, *arith_startbuf;
+#undef YY_INPUT
+#define YY_INPUT(buf,result,max) \
+	result = (*buf = *arith_buf++) ? 1 : YY_NULL;
+#define YY_NO_UNPUT
+
+/* Avoid unnecessary libc bits. */
+#undef  ECHO
+#define ECHO \
+	do {} while (0)
+#undef  stdin
+#define stdin  \
+	NULL
+#undef  stdout
+#define stdout \
+	NULL
+#define YY_FATAL_ERROR(msg) \
+	error(arith_psh, "arith: fatal error: %s", msg)
+#line 554 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/out/darwin.x86/release/obj/kash/arith_lex.c"
+
+#define INITIAL 0
+
+#ifndef YY_NO_UNISTD_H
+/* Special case for "unistd.h", since it is non-ANSI. We include it way
+ * down here because we want the user's section 1 to have been scanned first.
+ * The user has a chance to override it with an option.
+ */
+#include <unistd.h>
+#endif
+
+#ifndef YY_EXTRA_TYPE
+#define YY_EXTRA_TYPE void *
+#endif
+
+static int yy_init_globals (void );
+
+/* Macros after this point can all be overridden by user definitions in
+ * section 1.
+ */
+
+#ifndef YY_SKIP_YYWRAP
+#ifdef __cplusplus
+extern "C" int yywrap (void );
+#else
+extern int yywrap (void );
+#endif
+#endif
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy (char *,yyconst char *,int );
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen (yyconst char * );
+#endif
+
+#ifndef YY_NO_INPUT
+
+#ifdef __cplusplus
+static int yyinput (void );
+#else
+static int input (void );
+#endif
+
+#endif
+
+/* Amount of stuff to slurp up with each read. */
+#ifndef YY_READ_BUF_SIZE
+#define YY_READ_BUF_SIZE 8192
+#endif
+
+/* Copy whatever the last rule matched to the standard output. */
+#ifndef ECHO
+/* This used to be an fputs(), but since the string might contain NUL's,
+ * we now use fwrite().
+ */
+#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
+#endif
+
+/* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
+ * is returned in "result".
+ */
+#ifndef YY_INPUT
+#define YY_INPUT(buf,result,max_size) \
+	if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
+		{ \
+		int c = '*'; \
+		size_t n; \
+		for ( n = 0; n < max_size && \
+			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
+			buf[n] = (char) c; \
+		if ( c == '\n' ) \
+			buf[n++] = (char) c; \
+		if ( c == EOF && ferror( yyin ) ) \
+			YY_FATAL_ERROR( "input in flex scanner failed" ); \
+		result = n; \
+		} \
+	else \
+		{ \
+		errno=0; \
+		while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
+			{ \
+			if( errno != EINTR) \
+				{ \
+				YY_FATAL_ERROR( "input in flex scanner failed" ); \
+				break; \
+				} \
+			errno=0; \
+			clearerr(yyin); \
+			} \
+		}\
+\
+
+#endif
+
+/* No semi-colon after return; correct usage is to write "yyterminate();" -
+ * we don't want an extra ';' after the "return" because that will cause
+ * some compilers to complain about unreachable statements.
+ */
+#ifndef yyterminate
+#define yyterminate() return YY_NULL
+#endif
+
+/* Number of entries by which start-condition stack grows. */
+#ifndef YY_START_STACK_INCR
+#define YY_START_STACK_INCR 25
+#endif
+
+/* Report a fatal error. */
+#ifndef YY_FATAL_ERROR
+#define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
+#endif
+
+/* end tables serialization structures and prototypes */
+
+/* Default declaration of generated scanner - a define so the user can
+ * easily add parameters.
+ */
+#ifndef YY_DECL
+#define YY_DECL_IS_OURS 1
+
+extern int yylex (void);
+
+#define YY_DECL int yylex (void)
+#endif /* !YY_DECL */
+
+/* Code executed at the beginning of each rule, after yytext and yyleng
+ * have been set up.
+ */
+#ifndef YY_USER_ACTION
+#define YY_USER_ACTION
+#endif
+
+/* Code executed at the end of each rule. */
+#ifndef YY_BREAK
+#define YY_BREAK break;
+#endif
+
+#define YY_RULE_SETUP \
+	YY_USER_ACTION
+
+/** The main scanner function which does all the work.
+ */
+YY_DECL
+{
+	register yy_state_type yy_current_state;
+	register char *yy_cp, *yy_bp;
+	register int yy_act;
+    
+#line 104 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+
+#line 707 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/out/darwin.x86/release/obj/kash/arith_lex.c"
+
+	if ( !(yy_init) )
+		{
+		(yy_init) = 1;
+
+#ifdef YY_USER_INIT
+		YY_USER_INIT;
+#endif
+
+		if ( ! (yy_start) )
+			(yy_start) = 1;	/* first start state */
+
+		if ( ! yyin )
+			yyin = stdin;
+
+		if ( ! yyout )
+			yyout = stdout;
+
+		if ( ! YY_CURRENT_BUFFER ) {
+			yyensure_buffer_stack ();
+			YY_CURRENT_BUFFER_LVALUE =
+				yy_create_buffer(yyin,YY_BUF_SIZE );
+		}
+
+		yy_load_buffer_state( );
+		}
+
+	while ( 1 )		/* loops until end-of-file is reached */
+		{
+		yy_cp = (yy_c_buf_p);
+
+		/* Support of yytext. */
+		*yy_cp = (yy_hold_char);
+
+		/* yy_bp points to the position in yy_ch_buf of the start of
+		 * the current run.
+		 */
+		yy_bp = yy_cp;
+
+		yy_current_state = (yy_start);
+yy_match:
+		do
+			{
+			register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
+			if ( yy_accept[yy_current_state] )
+				{
+				(yy_last_accepting_state) = yy_current_state;
+				(yy_last_accepting_cpos) = yy_cp;
+				}
+			while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+				{
+				yy_current_state = (int) yy_def[yy_current_state];
+				if ( yy_current_state >= 39 )
+					yy_c = yy_meta[(unsigned int) yy_c];
+				}
+			yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+			++yy_cp;
+			}
+		while ( yy_current_state != 38 );
+		yy_cp = (yy_last_accepting_cpos);
+		yy_current_state = (yy_last_accepting_state);
+
+yy_find_action:
+		yy_act = yy_accept[yy_current_state];
+
+		YY_DO_BEFORE_ACTION;
+
+do_action:	/* This label is used only to access EOF actions. */
+
+		switch ( yy_act )
+	{ /* beginning of action switch */
+			case 0: /* must back up */
+			/* undo the effects of YY_DO_BEFORE_ACTION */
+			*yy_cp = (yy_hold_char);
+			yy_cp = (yy_last_accepting_cpos);
+			yy_current_state = (yy_last_accepting_state);
+			goto yy_find_action;
+
+case 1:
+/* rule 1 can match eol */
+YY_RULE_SETUP
+#line 105 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ ; }
+	YY_BREAK
+case 2:
+YY_RULE_SETUP
+#line 106 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
+	YY_BREAK
+case 3:
+YY_RULE_SETUP
+#line 107 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
+	YY_BREAK
+case 4:
+YY_RULE_SETUP
+#line 108 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
+	YY_BREAK
+case 5:
+YY_RULE_SETUP
+#line 109 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ char *v = lookupvar(arith_psh, yytext);
+			if (v) {
+				yylval = strtol(v, &v, 0);
+				if (*v == 0)
+					return ARITH_NUM;
+			}
+			error(arith_psh, "arith: syntax error: \"%s\"", arith_startbuf);
+		}
+	YY_BREAK
+case 6:
+YY_RULE_SETUP
+#line 117 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_LPAREN); }
+	YY_BREAK
+case 7:
+YY_RULE_SETUP
+#line 118 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_RPAREN); }
+	YY_BREAK
+case 8:
+YY_RULE_SETUP
+#line 119 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_OR); }
+	YY_BREAK
+case 9:
+YY_RULE_SETUP
+#line 120 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_AND); }
+	YY_BREAK
+case 10:
+YY_RULE_SETUP
+#line 121 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_BOR); }
+	YY_BREAK
+case 11:
+YY_RULE_SETUP
+#line 122 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_BXOR); }
+	YY_BREAK
+case 12:
+YY_RULE_SETUP
+#line 123 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_BAND); }
+	YY_BREAK
+case 13:
+YY_RULE_SETUP
+#line 124 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_EQ); }
+	YY_BREAK
+case 14:
+YY_RULE_SETUP
+#line 125 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_NE); }
+	YY_BREAK
+case 15:
+YY_RULE_SETUP
+#line 126 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_GT); }
+	YY_BREAK
+case 16:
+YY_RULE_SETUP
+#line 127 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_GE); }
+	YY_BREAK
+case 17:
+YY_RULE_SETUP
+#line 128 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_LT); }
+	YY_BREAK
+case 18:
+YY_RULE_SETUP
+#line 129 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_LE); }
+	YY_BREAK
+case 19:
+YY_RULE_SETUP
+#line 130 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_LSHIFT); }
+	YY_BREAK
+case 20:
+YY_RULE_SETUP
+#line 131 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_RSHIFT); }
+	YY_BREAK
+case 21:
+YY_RULE_SETUP
+#line 132 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_MUL); }
+	YY_BREAK
+case 22:
+YY_RULE_SETUP
+#line 133 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_DIV); }
+	YY_BREAK
+case 23:
+YY_RULE_SETUP
+#line 134 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_REM); }
+	YY_BREAK
+case 24:
+YY_RULE_SETUP
+#line 135 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_ADD); }
+	YY_BREAK
+case 25:
+YY_RULE_SETUP
+#line 136 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_SUB); }
+	YY_BREAK
+case 26:
+YY_RULE_SETUP
+#line 137 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_BNOT); }
+	YY_BREAK
+case 27:
+YY_RULE_SETUP
+#line 138 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ return(ARITH_NOT); }
+	YY_BREAK
+case 28:
+YY_RULE_SETUP
+#line 139 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+{ error(arith_psh, "arith: syntax error: \"%s\"", arith_startbuf); }
+	YY_BREAK
+case 29:
+YY_RULE_SETUP
+#line 140 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+ECHO;
+	YY_BREAK
+#line 939 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/out/darwin.x86/release/obj/kash/arith_lex.c"
+case YY_STATE_EOF(INITIAL):
+	yyterminate();
+
+	case YY_END_OF_BUFFER:
+		{
+		/* Amount of text matched not including the EOB char. */
+		int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1;
+
+		/* Undo the effects of YY_DO_BEFORE_ACTION. */
+		*yy_cp = (yy_hold_char);
+		YY_RESTORE_YY_MORE_OFFSET
+
+		if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW )
+			{
+			/* We're scanning a new file or input source.  It's
+			 * possible that this happened because the user
+			 * just pointed yyin at a new source and called
+			 * yylex().  If so, then we have to assure
+			 * consistency between YY_CURRENT_BUFFER and our
+			 * globals.  Here is the right place to do so, because
+			 * this is the first action (other than possibly a
+			 * back-up) that will match for the new input source.
+			 */
+			(yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+			YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin;
+			YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL;
+			}
+
+		/* Note that here we test for yy_c_buf_p "<=" to the position
+		 * of the first EOB in the buffer, since yy_c_buf_p will
+		 * already have been incremented past the NUL character
+		 * (since all states make transitions on EOB to the
+		 * end-of-buffer state).  Contrast this with the test
+		 * in input().
+		 */
+		if ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
+			{ /* This was really a NUL. */
+			yy_state_type yy_next_state;
+
+			(yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text;
+
+			yy_current_state = yy_get_previous_state(  );
+
+			/* Okay, we're now positioned to make the NUL
+			 * transition.  We couldn't have
+			 * yy_get_previous_state() go ahead and do it
+			 * for us because it doesn't know how to deal
+			 * with the possibility of jamming (and we don't
+			 * want to build jamming into it because then it
+			 * will run more slowly).
+			 */
+
+			yy_next_state = yy_try_NUL_trans( yy_current_state );
+
+			yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+
+			if ( yy_next_state )
+				{
+				/* Consume the NUL. */
+				yy_cp = ++(yy_c_buf_p);
+				yy_current_state = yy_next_state;
+				goto yy_match;
+				}
+
+			else
+				{
+				yy_cp = (yy_last_accepting_cpos);
+				yy_current_state = (yy_last_accepting_state);
+				goto yy_find_action;
+				}
+			}
+
+		else switch ( yy_get_next_buffer(  ) )
+			{
+			case EOB_ACT_END_OF_FILE:
+				{
+				(yy_did_buffer_switch_on_eof) = 0;
+
+				if ( yywrap( ) )
+					{
+					/* Note: because we've taken care in
+					 * yy_get_next_buffer() to have set up
+					 * yytext, we can now set up
+					 * yy_c_buf_p so that if some total
+					 * hoser (like flex itself) wants to
+					 * call the scanner after we return the
+					 * YY_NULL, it'll still work - another
+					 * YY_NULL will get returned.
+					 */
+					(yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ;
+
+					yy_act = YY_STATE_EOF(YY_START);
+					goto do_action;
+					}
+
+				else
+					{
+					if ( ! (yy_did_buffer_switch_on_eof) )
+						YY_NEW_FILE;
+					}
+				break;
+				}
+
+			case EOB_ACT_CONTINUE_SCAN:
+				(yy_c_buf_p) =
+					(yytext_ptr) + yy_amount_of_matched_text;
+
+				yy_current_state = yy_get_previous_state(  );
+
+				yy_cp = (yy_c_buf_p);
+				yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+				goto yy_match;
+
+			case EOB_ACT_LAST_MATCH:
+				(yy_c_buf_p) =
+				&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)];
+
+				yy_current_state = yy_get_previous_state(  );
+
+				yy_cp = (yy_c_buf_p);
+				yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+				goto yy_find_action;
+			}
+		break;
+		}
+
+	default:
+		YY_FATAL_ERROR(
+			"fatal flex scanner internal error--no action found" );
+	} /* end of action switch */
+		} /* end of scanning one token */
+} /* end of yylex */
+
+/* yy_get_next_buffer - try to read in a new buffer
+ *
+ * Returns a code representing an action:
+ *	EOB_ACT_LAST_MATCH -
+ *	EOB_ACT_CONTINUE_SCAN - continue scanning from current position
+ *	EOB_ACT_END_OF_FILE - end of file
+ */
+static int yy_get_next_buffer (void)
+{
+    	register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
+	register char *source = (yytext_ptr);
+	register int number_to_move, i;
+	int ret_val;
+
+	if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] )
+		YY_FATAL_ERROR(
+		"fatal flex scanner internal error--end of buffer missed" );
+
+	if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 )
+		{ /* Don't try to fill the buffer, so this is an EOF. */
+		if ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 )
+			{
+			/* We matched a single character, the EOB, so
+			 * treat this as a final EOF.
+			 */
+			return EOB_ACT_END_OF_FILE;
+			}
+
+		else
+			{
+			/* We matched some text prior to the EOB, first
+			 * process it.
+			 */
+			return EOB_ACT_LAST_MATCH;
+			}
+		}
+
+	/* Try to read more data. */
+
+	/* First move last chars to start of buffer. */
+	number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr)) - 1;
+
+	for ( i = 0; i < number_to_move; ++i )
+		*(dest++) = *(source++);
+
+	if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
+		/* don't do the read, it's not guaranteed to return an EOF,
+		 * just force an EOF
+		 */
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0;
+
+	else
+		{
+			int num_to_read =
+			YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
+
+		while ( num_to_read <= 0 )
+			{ /* Not enough room in the buffer - grow it. */
+
+			/* just a shorter name for the current buffer */
+			YY_BUFFER_STATE b = YY_CURRENT_BUFFER;
+
+			int yy_c_buf_p_offset =
+				(int) ((yy_c_buf_p) - b->yy_ch_buf);
+
+			if ( b->yy_is_our_buffer )
+				{
+				int new_size = b->yy_buf_size * 2;
+
+				if ( new_size <= 0 )
+					b->yy_buf_size += b->yy_buf_size / 8;
+				else
+					b->yy_buf_size *= 2;
+
+				b->yy_ch_buf = (char *)
+					/* Include room in for 2 EOB chars. */
+					yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2  );
+				}
+			else
+				/* Can't grow it, we don't own it. */
+				b->yy_ch_buf = 0;
+
+			if ( ! b->yy_ch_buf )
+				YY_FATAL_ERROR(
+				"fatal error - scanner input buffer overflow" );
+
+			(yy_c_buf_p) = &b->yy_ch_buf[yy_c_buf_p_offset];
+
+			num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size -
+						number_to_move - 1;
+
+			}
+
+		if ( num_to_read > YY_READ_BUF_SIZE )
+			num_to_read = YY_READ_BUF_SIZE;
+
+		/* Read in more data. */
+		YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
+			(yy_n_chars), num_to_read );
+
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+		}
+
+	if ( (yy_n_chars) == 0 )
+		{
+		if ( number_to_move == YY_MORE_ADJ )
+			{
+			ret_val = EOB_ACT_END_OF_FILE;
+			yyrestart(yyin  );
+			}
+
+		else
+			{
+			ret_val = EOB_ACT_LAST_MATCH;
+			YY_CURRENT_BUFFER_LVALUE->yy_buffer_status =
+				YY_BUFFER_EOF_PENDING;
+			}
+		}
+
+	else
+		ret_val = EOB_ACT_CONTINUE_SCAN;
+
+	(yy_n_chars) += number_to_move;
+	YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR;
+	YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR;
+
+	(yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0];
+
+	return ret_val;
+}
+
+/* yy_get_previous_state - get the state just before the EOB char was reached */
+
+    static yy_state_type yy_get_previous_state (void)
+{
+	register yy_state_type yy_current_state;
+	register char *yy_cp;
+    
+	yy_current_state = (yy_start);
+
+	for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp )
+		{
+		register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
+		if ( yy_accept[yy_current_state] )
+			{
+			(yy_last_accepting_state) = yy_current_state;
+			(yy_last_accepting_cpos) = yy_cp;
+			}
+		while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+			{
+			yy_current_state = (int) yy_def[yy_current_state];
+			if ( yy_current_state >= 39 )
+				yy_c = yy_meta[(unsigned int) yy_c];
+			}
+		yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+		}
+
+	return yy_current_state;
+}
+
+/* yy_try_NUL_trans - try to make a transition on the NUL character
+ *
+ * synopsis
+ *	next_state = yy_try_NUL_trans( current_state );
+ */
+    static yy_state_type yy_try_NUL_trans  (yy_state_type yy_current_state )
+{
+	register int yy_is_jam;
+    	register char *yy_cp = (yy_c_buf_p);
+
+	register YY_CHAR yy_c = 1;
+	if ( yy_accept[yy_current_state] )
+		{
+		(yy_last_accepting_state) = yy_current_state;
+		(yy_last_accepting_cpos) = yy_cp;
+		}
+	while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+		{
+		yy_current_state = (int) yy_def[yy_current_state];
+		if ( yy_current_state >= 39 )
+			yy_c = yy_meta[(unsigned int) yy_c];
+		}
+	yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+	yy_is_jam = (yy_current_state == 38);
+
+	return yy_is_jam ? 0 : yy_current_state;
+}
+
+#ifndef YY_NO_INPUT
+#ifdef __cplusplus
+    static int yyinput (void)
+#else
+    static int input  (void)
+#endif
+
+{
+	int c;
+    
+	*(yy_c_buf_p) = (yy_hold_char);
+
+	if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR )
+		{
+		/* yy_c_buf_p now points to the character we want to return.
+		 * If this occurs *before* the EOB characters, then it's a
+		 * valid NUL; if not, then we've hit the end of the buffer.
+		 */
+		if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
+			/* This was really a NUL. */
+			*(yy_c_buf_p) = '\0';
+
+		else
+			{ /* need more input */
+			int offset = (yy_c_buf_p) - (yytext_ptr);
+			++(yy_c_buf_p);
+
+			switch ( yy_get_next_buffer(  ) )
+				{
+				case EOB_ACT_LAST_MATCH:
+					/* This happens because yy_g_n_b()
+					 * sees that we've accumulated a
+					 * token and flags that we need to
+					 * try matching the token before
+					 * proceeding.  But for input(),
+					 * there's no matching to consider.
+					 * So convert the EOB_ACT_LAST_MATCH
+					 * to EOB_ACT_END_OF_FILE.
+					 */
+
+					/* Reset buffer status. */
+					yyrestart(yyin );
+
+					/*FALLTHROUGH*/
+
+				case EOB_ACT_END_OF_FILE:
+					{
+					if ( yywrap( ) )
+						return 0;
+
+					if ( ! (yy_did_buffer_switch_on_eof) )
+						YY_NEW_FILE;
+#ifdef __cplusplus
+					return yyinput();
+#else
+					return input();
+#endif
+					}
+
+				case EOB_ACT_CONTINUE_SCAN:
+					(yy_c_buf_p) = (yytext_ptr) + offset;
+					break;
+				}
+			}
+		}
+
+	c = *(unsigned char *) (yy_c_buf_p);	/* cast for 8-bit char's */
+	*(yy_c_buf_p) = '\0';	/* preserve yytext */
+	(yy_hold_char) = *++(yy_c_buf_p);
+
+	return c;
+}
+#endif	/* ifndef YY_NO_INPUT */
+
+/** Immediately switch to a different input stream.
+ * @param input_file A readable stream.
+ * 
+ * @note This function does not reset the start condition to @c INITIAL .
+ */
+    void yyrestart  (FILE * input_file )
+{
+    
+	if ( ! YY_CURRENT_BUFFER ){
+        yyensure_buffer_stack ();
+		YY_CURRENT_BUFFER_LVALUE =
+            yy_create_buffer(yyin,YY_BUF_SIZE );
+	}
+
+	yy_init_buffer(YY_CURRENT_BUFFER,input_file );
+	yy_load_buffer_state( );
+}
+
+/** Switch to a different input buffer.
+ * @param new_buffer The new input buffer.
+ * 
+ */
+    void yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer )
+{
+    
+	/* TODO. We should be able to replace this entire function body
+	 * with
+	 *		yypop_buffer_state();
+	 *		yypush_buffer_state(new_buffer);
+     */
+	yyensure_buffer_stack ();
+	if ( YY_CURRENT_BUFFER == new_buffer )
+		return;
+
+	if ( YY_CURRENT_BUFFER )
+		{
+		/* Flush out information for old buffer. */
+		*(yy_c_buf_p) = (yy_hold_char);
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+		}
+
+	YY_CURRENT_BUFFER_LVALUE = new_buffer;
+	yy_load_buffer_state( );
+
+	/* We don't actually know whether we did this switch during
+	 * EOF (yywrap()) processing, but the only time this flag
+	 * is looked at is after yywrap() is called, so it's safe
+	 * to go ahead and always set it.
+	 */
+	(yy_did_buffer_switch_on_eof) = 1;
+}
+
+static void yy_load_buffer_state  (void)
+{
+    	(yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+	(yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos;
+	yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file;
+	(yy_hold_char) = *(yy_c_buf_p);
+}
+
+/** Allocate and initialize an input buffer state.
+ * @param file A readable stream.
+ * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
+ * 
+ * @return the allocated buffer state.
+ */
+    YY_BUFFER_STATE yy_create_buffer  (FILE * file, int  size )
+{
+	YY_BUFFER_STATE b;
+    
+	b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state )  );
+	if ( ! b )
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+	b->yy_buf_size = size;
+
+	/* yy_ch_buf has to be 2 characters longer than the size given because
+	 * we need to put in 2 end-of-buffer characters.
+	 */
+	b->yy_ch_buf = (char *) yyalloc(b->yy_buf_size + 2  );
+	if ( ! b->yy_ch_buf )
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+	b->yy_is_our_buffer = 1;
+
+	yy_init_buffer(b,file );
+
+	return b;
+}
+
+/** Destroy the buffer.
+ * @param b a buffer created with yy_create_buffer()
+ * 
+ */
+    void yy_delete_buffer (YY_BUFFER_STATE  b )
+{
+    
+	if ( ! b )
+		return;
+
+	if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */
+		YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
+
+	if ( b->yy_is_our_buffer )
+		yyfree((void *) b->yy_ch_buf  );
+
+	yyfree((void *) b  );
+}
+
+/* Initializes or reinitializes a buffer.
+ * This function is sometimes called more than once on the same buffer,
+ * such as during a yyrestart() or at EOF.
+ */
+    static void yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file )
+
+{
+	int oerrno = errno;
+    
+	yy_flush_buffer(b );
+
+	b->yy_input_file = file;
+	b->yy_fill_buffer = 1;
+
+    /* If b is the current buffer, then yy_init_buffer was _probably_
+     * called from yyrestart() or through yy_get_next_buffer.
+     * In that case, we don't want to reset the lineno or column.
+     */
+    if (b != YY_CURRENT_BUFFER){
+        b->yy_bs_lineno = 1;
+        b->yy_bs_column = 0;
+    }
+
+        b->yy_is_interactive = 0;
+    
+	errno = oerrno;
+}
+
+/** Discard all buffered characters. On the next scan, YY_INPUT will be called.
+ * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
+ * 
+ */
+    void yy_flush_buffer (YY_BUFFER_STATE  b )
+{
+    	if ( ! b )
+		return;
+
+	b->yy_n_chars = 0;
+
+	/* We always need two end-of-buffer characters.  The first causes
+	 * a transition to the end-of-buffer state.  The second causes
+	 * a jam in that state.
+	 */
+	b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
+	b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
+
+	b->yy_buf_pos = &b->yy_ch_buf[0];
+
+	b->yy_at_bol = 1;
+	b->yy_buffer_status = YY_BUFFER_NEW;
+
+	if ( b == YY_CURRENT_BUFFER )
+		yy_load_buffer_state( );
+}
+
+/** Pushes the new state onto the stack. The new state becomes
+ *  the current state. This function will allocate the stack
+ *  if necessary.
+ *  @param new_buffer The new state.
+ *  
+ */
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer )
+{
+    	if (new_buffer == NULL)
+		return;
+
+	yyensure_buffer_stack();
+
+	/* This block is copied from yy_switch_to_buffer. */
+	if ( YY_CURRENT_BUFFER )
+		{
+		/* Flush out information for old buffer. */
+		*(yy_c_buf_p) = (yy_hold_char);
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+		}
+
+	/* Only push if top exists. Otherwise, replace top. */
+	if (YY_CURRENT_BUFFER)
+		(yy_buffer_stack_top)++;
+	YY_CURRENT_BUFFER_LVALUE = new_buffer;
+
+	/* copied from yy_switch_to_buffer. */
+	yy_load_buffer_state( );
+	(yy_did_buffer_switch_on_eof) = 1;
+}
+
+/** Removes and deletes the top of the stack, if present.
+ *  The next element becomes the new top.
+ *  
+ */
+void yypop_buffer_state (void)
+{
+    	if (!YY_CURRENT_BUFFER)
+		return;
+
+	yy_delete_buffer(YY_CURRENT_BUFFER );
+	YY_CURRENT_BUFFER_LVALUE = NULL;
+	if ((yy_buffer_stack_top) > 0)
+		--(yy_buffer_stack_top);
+
+	if (YY_CURRENT_BUFFER) {
+		yy_load_buffer_state( );
+		(yy_did_buffer_switch_on_eof) = 1;
+	}
+}
+
+/* Allocates the stack if it does not exist.
+ *  Guarantees space for at least one push.
+ */
+static void yyensure_buffer_stack (void)
+{
+	int num_to_alloc;
+    
+	if (!(yy_buffer_stack)) {
+
+		/* First allocation is just for 2 elements, since we don't know if this
+		 * scanner will even need a stack. We use 2 instead of 1 to avoid an
+		 * immediate realloc on the next call.
+         */
+		num_to_alloc = 1;
+		(yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
+								(num_to_alloc * sizeof(struct yy_buffer_state*)
+								);
+		
+		memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*));
+				
+		(yy_buffer_stack_max) = num_to_alloc;
+		(yy_buffer_stack_top) = 0;
+		return;
+	}
+
+	if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){
+
+		/* Increase the buffer to prepare for a possible push. */
+		int grow_size = 8 /* arbitrary grow size */;
+
+		num_to_alloc = (yy_buffer_stack_max) + grow_size;
+		(yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc
+								((yy_buffer_stack),
+								num_to_alloc * sizeof(struct yy_buffer_state*)
+								);
+
+		/* zero only the new slots.*/
+		memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*));
+		(yy_buffer_stack_max) = num_to_alloc;
+	}
+}
+
+#ifndef YY_EXIT_FAILURE
+#define YY_EXIT_FAILURE 2
+#endif
+
+static void yy_fatal_error (yyconst char* msg )
+{
+    	(void) fprintf( stderr, "%s\n", msg );
+	exit( YY_EXIT_FAILURE );
+}
+
+/* Redefine yyless() so it works in section 3 code. */
+
+#undef yyless
+#define yyless(n) \
+	do \
+		{ \
+		/* Undo effects of setting up yytext. */ \
+        int yyless_macro_arg = (n); \
+        YY_LESS_LINENO(yyless_macro_arg);\
+		yytext[yyleng] = (yy_hold_char); \
+		(yy_c_buf_p) = yytext + yyless_macro_arg; \
+		(yy_hold_char) = *(yy_c_buf_p); \
+		*(yy_c_buf_p) = '\0'; \
+		yyleng = yyless_macro_arg; \
+		} \
+	while ( 0 )
+
+/* Accessor  methods (get/set functions) to struct members. */
+
+/** Get the current token.
+ * 
+ */
+
+static int yy_init_globals (void)
+{
+        /* Initialization is the same as for the non-reentrant scanner.
+     * This function is called from yylex_destroy(), so don't allocate here.
+     */
+
+    (yy_buffer_stack) = 0;
+    (yy_buffer_stack_top) = 0;
+    (yy_buffer_stack_max) = 0;
+    (yy_c_buf_p) = (char *) 0;
+    (yy_init) = 0;
+    (yy_start) = 0;
+
+/* Defined in main.c */
+#ifdef YY_STDINIT
+    yyin = stdin;
+    yyout = stdout;
+#else
+    yyin = (FILE *) 0;
+    yyout = (FILE *) 0;
+#endif
+
+    /* For future reference: Set errno on error, since we are called by
+     * yylex_init()
+     */
+    return 0;
+}
+
+/* yylex_destroy is for both reentrant and non-reentrant scanners. */
+int yylex_destroy  (void)
+{
+    
+    /* Pop the buffer stack, destroying each element. */
+	while(YY_CURRENT_BUFFER){
+		yy_delete_buffer(YY_CURRENT_BUFFER  );
+		YY_CURRENT_BUFFER_LVALUE = NULL;
+		yypop_buffer_state();
+	}
+
+	/* Destroy the stack itself. */
+	yyfree((yy_buffer_stack) );
+	(yy_buffer_stack) = NULL;
+
+    /* Reset the globals. This is important in a non-reentrant scanner so the next time
+     * yylex() is called, initialization will occur. */
+    yy_init_globals( );
+
+    return 0;
+}
+
+/*
+ * Internal utility routines.
+ */
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy (char* s1, yyconst char * s2, int n )
+{
+	register int i;
+	for ( i = 0; i < n; ++i )
+		s1[i] = s2[i];
+}
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen (yyconst char * s )
+{
+	register int n;
+	for ( n = 0; s[n]; ++n )
+		;
+
+	return n;
+}
+#endif
+
+#define YYTABLES_NAME "yytables"
+
+#line 140 "/Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/arith_lex.l"
+
+
+
+void
+arith_lex_reset() {
+#ifdef YY_NEW_FILE
+	YY_NEW_FILE;
+#endif
+}
+
+void *
+yyalloc(yy_size_t cb)
+{
+	return sh_malloc(NULL, cb);
+}
+
+void *
+yyrealloc(void *pv,yy_size_t cb)
+{
+	return sh_realloc(NULL, pv, cb);
+}
+
+void
+yyfree(void *pv)
+{
+	sh_free(NULL, pv);
+}
+
+
diff --git a/src/kash/generated/builtins.c b/src/kash/generated/builtins.c
new file mode 100644
index 0000000..f9c2f60
--- /dev/null
+++ b/src/kash/generated/builtins.c
@@ -0,0 +1,63 @@
+/*
+ * This file was generated by the mkbuiltins program.
+ */
+
+#include "shell.h"
+#include "builtins.h"
+
+const struct builtincmd builtincmd[] = {
+
+	{ "command",	bltincmd },
+	{ "bg",	bgcmd },
+	{ "cd",	cdcmd },
+	{ "chdir",	cdcmd },
+	{ "echo",	echocmd },
+	{ "exp",	expcmd },
+	{ "let",	expcmd },
+	{ "false",	falsecmd },
+	{ "fc",	histcmd },
+	{ "inputrc",	inputrc },
+	{ "fg",	fgcmd },
+	{ "getopts",	getoptscmd },
+	{ "hash",	hashcmd },
+	{ "jobid",	jobidcmd },
+	{ "jobs",	jobscmd },
+	{ "local",	localcmd },
+#ifndef SMALL
+	{ "printf",	printfcmd },
+#endif
+	{ "pwd",	pwdcmd },
+	{ "read",	readcmd },
+	{ "setvar",	setvarcmd },
+	{ "true",	truecmd },
+	{ "type",	typecmd },
+	{ "umask",	umaskcmd },
+	{ "unalias",	unaliascmd },
+	{ "wait",	waitcmd },
+	{ "alias",	aliascmd },
+	{ "ulimit",	ulimitcmd },
+	{ "test",	testcmd },
+	{ "[",	testcmd },
+	{ "kill",	killcmd },
+	{ "wordexp",	wordexpcmd },
+	{ 0, 0 },
+};
+
+const struct builtincmd splbltincmd[] = {
+	{ "break",	breakcmd },
+	{ "continue",	breakcmd },
+	{ ".",	dotcmd },
+	{ "eval",	evalcmd },
+	{ "exec",	execcmd },
+	{ "exit",	exitcmd },
+	{ "export",	exportcmd },
+	{ "readonly",	exportcmd },
+	{ "return",	returncmd },
+	{ "set",	setcmd },
+	{ "shift",	shiftcmd },
+	{ "times",	timescmd },
+	{ "trap",	trapcmd },
+	{ ":",	truecmd },
+	{ "unset",	unsetcmd },
+	{ 0, 0 },
+};
diff --git a/src/kash/generated/builtins.h b/src/kash/generated/builtins.h
new file mode 100644
index 0000000..580d4b4
--- /dev/null
+++ b/src/kash/generated/builtins.h
@@ -0,0 +1,57 @@
+/*
+ * This file was generated by the mkbuiltins program.
+ */
+
+#include "shtypes.h"
+
+struct builtincmd {
+      const char *name;
+      int (*builtin)(shinstance *, int, char **);
+};
+
+extern const struct builtincmd builtincmd[];
+extern const struct builtincmd splbltincmd[];
+
+
+int bltincmd(shinstance *, int, char **);
+int bgcmd(shinstance *, int, char **);
+int breakcmd(shinstance *, int, char **);
+int cdcmd(shinstance *, int, char **);
+int dotcmd(shinstance *, int, char **);
+int echocmd(shinstance *, int, char **);
+int evalcmd(shinstance *, int, char **);
+int execcmd(shinstance *, int, char **);
+int exitcmd(shinstance *, int, char **);
+int expcmd(shinstance *, int, char **);
+int exportcmd(shinstance *, int, char **);
+int falsecmd(shinstance *, int, char **);
+int histcmd(shinstance *, int, char **);
+int inputrc(shinstance *, int, char **);
+int fgcmd(shinstance *, int, char **);
+int getoptscmd(shinstance *, int, char **);
+int hashcmd(shinstance *, int, char **);
+int jobidcmd(shinstance *, int, char **);
+int jobscmd(shinstance *, int, char **);
+int localcmd(shinstance *, int, char **);
+#ifndef SMALL
+int printfcmd(shinstance *, int, char **);
+#endif
+int pwdcmd(shinstance *, int, char **);
+int readcmd(shinstance *, int, char **);
+int returncmd(shinstance *, int, char **);
+int setcmd(shinstance *, int, char **);
+int setvarcmd(shinstance *, int, char **);
+int shiftcmd(shinstance *, int, char **);
+int timescmd(shinstance *, int, char **);
+int trapcmd(shinstance *, int, char **);
+int truecmd(shinstance *, int, char **);
+int typecmd(shinstance *, int, char **);
+int umaskcmd(shinstance *, int, char **);
+int unaliascmd(shinstance *, int, char **);
+int unsetcmd(shinstance *, int, char **);
+int waitcmd(shinstance *, int, char **);
+int aliascmd(shinstance *, int, char **);
+int ulimitcmd(shinstance *, int, char **);
+int testcmd(shinstance *, int, char **);
+int killcmd(shinstance *, int, char **);
+int wordexpcmd(shinstance *, int, char **);
diff --git a/src/kash/generated/init.c b/src/kash/generated/init.c
new file mode 100644
index 0000000..5b0f781
--- /dev/null
+++ b/src/kash/generated/init.c
@@ -0,0 +1,292 @@
+/*
+ * This file was generated by the mkinit program.
+ */
+
+#include "shell.h"
+#include "mystring.h"
+#include "init.h"
+#include "eval.h"
+#include <stdio.h>
+#include "input.h"
+#include "error.h"
+#include <stdlib.h>
+#include "options.h"
+#include "output.h"
+#include "memalloc.h"
+#include "redir.h"
+#include <signal.h>
+#include "trap.h"
+#include "var.h"
+#include "shinstance.h"
+
+
+
+#undef  PROFILE
+#define PROFILE 0
+#undef  SIGSSIZE
+#define SIGSSIZE (sizeof(sigs)/sizeof(sigs[0]))
+#undef  MAXPWD
+#define MAXPWD 256
+#undef  ALL
+#define ALL (E_OPEN|E_CREAT|E_EXEC)
+#undef  EV_EXIT
+#define EV_EXIT 01		/* exit after evaluating tree */
+#undef  EV_TESTED
+#define EV_TESTED 02		/* exit status is checked; ignore -e flag */
+#undef  EV_BACKCMD
+#define EV_BACKCMD 04		/* command executing within back quotes */
+#undef  NEWARGS
+#define NEWARGS 5
+#undef  MAXHISTLOOPS
+#define MAXHISTLOOPS	4	/* max recursions through fc */
+#undef  DEFEDITOR
+#define DEFEDITOR	"ed"	/* default editor *should* be $EDITOR */
+#undef  editing
+#define editing (Eflag(psh) || Vflag(psh))
+#undef  EOF_NLEFT
+#define EOF_NLEFT -99		/* value of parsenleft when EOF pushed back */
+#undef  DEFINE_OPTIONS
+#define DEFINE_OPTIONS
+#undef  BLOCK_OUT
+#define BLOCK_OUT -2		/* output to a fixed block of memory */
+#undef  OUTPUT_ERR
+#define OUTPUT_ERR 01		/* error occurred on output */
+#undef  TEMPSIZE
+#define TEMPSIZE 32
+#undef  HAVE_VASPRINTF
+#define HAVE_VASPRINTF 1
+#undef  EOFMARKLEN
+#define EOFMARKLEN 79
+#undef  OPENBRACE
+#define OPENBRACE '{'
+#undef  CLOSEBRACE
+#define CLOSEBRACE '}'
+#undef  EMPTY
+#define EMPTY -2		/* marks an unused slot in redirtab */
+#undef  S_DFL
+#define S_DFL 1			/* default signal handling (SIG_DFL) */
+#undef  S_CATCH
+#define S_CATCH 2		/* signal is caught */
+#undef  S_IGN
+#define S_IGN 3			/* signal is ignored (SIG_IGN) */
+#undef  S_HARD_IGN
+#define S_HARD_IGN 4		/* signal is ignored permenantly */
+#undef  S_RESET
+#define S_RESET 5		/* temporary - to reset a hard ignored sig */
+#undef  INCL_BASE
+#define INCL_BASE
+#undef  LIBPATHSTRICT
+#define LIBPATHSTRICT 3
+#undef  QHINF_EXEINFO
+#define QHINF_EXEINFO       1 /* NE exeinfo. */
+#undef  QHINF_READRSRCTBL
+#define QHINF_READRSRCTBL   2 /* Reads from the resource table. */
+#undef  QHINF_READFILE
+#define QHINF_READFILE      3 /* Reads from the executable file. */
+#undef  QHINF_LIBPATHLENGTH
+#define QHINF_LIBPATHLENGTH 4 /* Gets the libpath length. */
+#undef  QHINF_LIBPATH
+#define QHINF_LIBPATH       5 /* Gets the entire libpath. */
+#undef  QHINF_FIXENTRY
+#define QHINF_FIXENTRY      6 /* NE only */
+#undef  QHINF_STE
+#define QHINF_STE           7 /* NE only */
+#undef  QHINF_MAPSEL
+#define QHINF_MAPSEL        8 /* NE only */
+#undef  SET_LEN
+#define	SET_LEN	6		/* initial # of bitcmd struct to malloc */
+#undef  SET_LEN_INCR
+#define	SET_LEN_INCR 4		/* # of bitcmd structs to add as needed */
+#undef  CMD2_CLR
+#define	CMD2_CLR	0x01
+#undef  CMD2_SET
+#define	CMD2_SET	0x02
+#undef  CMD2_GBITS
+#define	CMD2_GBITS	0x04
+#undef  CMD2_OBITS
+#define	CMD2_OBITS	0x08
+#undef  CMD2_UBITS
+#define	CMD2_UBITS	0x10
+#undef  STANDARD_BITS
+#define	STANDARD_BITS	(S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
+#undef  SHMEMHDR_MAGIC_FREE
+#define SHMEMHDR_MAGIC_FREE     0xbeeff00d
+#undef  SHMEMHDR_MAGIC_USED
+#define SHMEMHDR_MAGIC_USED     0xfeedface
+#undef  SHMEMCHUNK_MAGIC
+#define SHMEMCHUNK_MAGIC        0x12345678
+#undef  SHHEAP_MIN_CHUNK
+#define SHHEAP_MIN_CHUNK        0x80000 //(1024*1024)
+#undef  SHFILE_MAX
+#define SHFILE_MAX          1024
+#undef  SHFILE_GROW
+#define SHFILE_GROW         64
+#undef  SHFILE_UNIX_MIN_FD
+#define SHFILE_UNIX_MIN_FD  32
+#undef  SHFILE_MAX_PATH
+#define SHFILE_MAX_PATH     4096
+#undef  YY_NO_UNPUT
+#define YY_NO_UNPUT
+
+
+
+extern void rmaliases(shinstance *psh);
+
+extern void deletefuncs(struct shinstance *);
+extern void hash_special_builtins(struct shinstance *);
+
+
+
+/*
+ * Initialization code.
+ */
+
+void
+init(shinstance *psh) {
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/exec.c: */
+      {
+	      hash_special_builtins(psh);
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/input.c: */
+      {
+	      psh->basepf.nextc = psh->basepf.buf = psh->basebuf;
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/options.c: */
+      {
+	      memcpy(&psh->optlist[0], &ro_optlist[0], sizeof(psh->optlist));
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/var.c: */
+      {
+	      char **envp;
+
+	      initvar(psh);
+	      for (envp = sh_environ(psh) ; *envp ; envp++) {
+		      if (strchr(*envp, '=')) {
+			      setvareq(psh, *envp, VEXPORT|VTEXTFIXED);
+		      }
+	      }
+      }
+}
+
+
+
+/*
+ * This routine is called when an error or an interrupt occurs in an
+ * interactive shell and control is returned to the main command loop.
+ */
+
+void
+reset(shinstance *psh) {
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/eval.c: */
+      {
+	      psh->evalskip = 0;
+	      psh->loopnest = 0;
+	      psh->funcnest = 0;
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/input.c: */
+      {
+	      if (psh->exception != EXSHELLPROC)
+		      psh->parselleft = psh->parsenleft = 0;	/* clear input buffer */
+	      popallfiles(psh);
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/output.c: */
+      {
+	      psh->out1 = &psh->output;
+	      psh->out2 = &psh->errout;
+	      if (psh->memout.buf != NULL) {
+		      ckfree(psh, psh->memout.buf);
+		      psh->memout.buf = NULL;
+		      psh->memout.nextc = NULL;
+	      }
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/parser.c: */
+      {
+	      psh->tokpushback = 0;
+	      psh->checkkwd = 0;
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/redir.c: */
+      {
+	      while (psh->redirlist)
+		      popredir(psh);
+      }
+}
+
+
+
+/*
+ * This routine is called to initialize the shell to run a shell procedure.
+ */
+
+void
+initshellproc(shinstance *psh) {
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/alias.c: */
+      {
+	      rmaliases(psh);
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/eval.c: */
+      {
+	      psh->exitstatus = 0;
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/exec.c: */
+      {
+	      deletefuncs(psh);
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/input.c: */
+      {
+	      popallfiles(psh);
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/jobs.c: */
+      {
+	      psh->backgndpid = -1;
+#if JOBS
+	      psh->jobctl = 0;
+#endif
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/options.c: */
+      {
+	      int i;
+
+	      for (i = 0; psh->optlist[i].name; i++)
+		      psh->optlist[i].val = 0;
+# if DEBUG == 2
+	      debug(psh) = 1;
+# endif
+	      optschanged(psh);
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/redir.c: */
+      {
+	      clearredir(psh);
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/trap.c: */
+      {
+	      char *sm;
+
+	      clear_traps(psh);
+	      for (sm = psh->sigmode ; sm < psh->sigmode + NSIG ; sm++) {
+		      if (*sm == S_IGN)
+			      *sm = S_HARD_IGN;
+	      }
+      }
+
+      /* from /Volumes/ScratchHFS/bird/kBuild/svn/trunk/src/kash/var.c: */
+      {
+	      shprocvar(psh);
+      }
+}
diff --git a/src/kash/generated/nodes.c b/src/kash/generated/nodes.c
new file mode 100644
index 0000000..12d5172
--- /dev/null
+++ b/src/kash/generated/nodes.c
@@ -0,0 +1,366 @@
+/*
+ * This file was generated by mknodes.sh
+ */
+
+/*	$NetBSD: nodes.c.pat,v 1.12 2004/06/15 22:57:27 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)nodes.c.pat	8.2 (Berkeley) 5/4/95
+ */
+
+#include <stdlib.h>
+/*
+ * Routine for dealing with parsed shell commands.
+ */
+
+#include "shell.h"
+#include "nodes.h"
+#include "memalloc.h"
+#include "machdep.h"
+#include "mystring.h"
+#include "shinstance.h"
+
+#ifndef KASH_SEPARATE_PARSER_ALLOCATOR
+
+size_t  funcblocksize;		/* size of structures in function */
+size_t  funcstringsize;		/* size of strings in node */
+pointer funcblock;		/* block to allocate function from */
+char   *funcstring;		/* block to allocate strings from */
+
+static const short nodesize[26] = {
+      SHELL_ALIGN(sizeof (struct nbinary)),
+      SHELL_ALIGN(sizeof (struct ncmd)),
+      SHELL_ALIGN(sizeof (struct npipe)),
+      SHELL_ALIGN(sizeof (struct nredir)),
+      SHELL_ALIGN(sizeof (struct nredir)),
+      SHELL_ALIGN(sizeof (struct nredir)),
+      SHELL_ALIGN(sizeof (struct nbinary)),
+      SHELL_ALIGN(sizeof (struct nbinary)),
+      SHELL_ALIGN(sizeof (struct nif)),
+      SHELL_ALIGN(sizeof (struct nbinary)),
+      SHELL_ALIGN(sizeof (struct nbinary)),
+      SHELL_ALIGN(sizeof (struct nfor)),
+      SHELL_ALIGN(sizeof (struct ncase)),
+      SHELL_ALIGN(sizeof (struct nclist)),
+      SHELL_ALIGN(sizeof (struct narg)),
+      SHELL_ALIGN(sizeof (struct narg)),
+      SHELL_ALIGN(sizeof (struct nfile)),
+      SHELL_ALIGN(sizeof (struct nfile)),
+      SHELL_ALIGN(sizeof (struct nfile)),
+      SHELL_ALIGN(sizeof (struct nfile)),
+      SHELL_ALIGN(sizeof (struct nfile)),
+      SHELL_ALIGN(sizeof (struct ndup)),
+      SHELL_ALIGN(sizeof (struct ndup)),
+      SHELL_ALIGN(sizeof (struct nhere)),
+      SHELL_ALIGN(sizeof (struct nhere)),
+      SHELL_ALIGN(sizeof (struct nnot)),
+};
+
+
+STATIC void calcsize(union node *);
+STATIC void sizenodelist(struct nodelist *);
+STATIC union node *copynode(union node *);
+STATIC struct nodelist *copynodelist(struct nodelist *);
+STATIC char *nodesavestr(char *);
+
+#endif /* !KASH_SEPARATE_PARSER_ALLOCATOR */
+
+
+/*
+ * Make a copy of a parse tree.
+ */
+
+union node *
+copyfunc(psh, n)
+    struct shinstance *psh;
+	union node *n;
+{
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	if (n != NULL) {
+		unsigned refs = pstackretain(n->pblock);
+		TRACE2((psh, "copyfunc: %p - %u refs\n", n->pblock, refs)); K_NOREF(refs);
+	}
+	return n;
+#else
+	if (n == NULL)
+		return NULL;
+	funcblocksize = 0;
+	funcstringsize = 0;
+	calcsize(n);
+	funcblock = ckmalloc(psh, funcblocksize + funcstringsize);
+	funcstring = (char *) funcblock + funcblocksize;
+	return copynode(n);
+#endif
+}
+
+#ifndef KASH_SEPARATE_PARSER_ALLOCATOR
+
+STATIC void
+calcsize(n)
+	union node *n;
+{
+      if (n == NULL)
+	    return;
+      funcblocksize += nodesize[n->type];
+      switch (n->type) {
+      case NSEMI:
+      case NAND:
+      case NOR:
+      case NWHILE:
+      case NUNTIL:
+	    calcsize(n->nbinary.ch2);
+	    calcsize(n->nbinary.ch1);
+	    break;
+      case NCMD:
+	    calcsize(n->ncmd.redirect);
+	    calcsize(n->ncmd.args);
+	    break;
+      case NPIPE:
+	    sizenodelist(n->npipe.cmdlist);
+	    break;
+      case NREDIR:
+      case NBACKGND:
+      case NSUBSHELL:
+	    calcsize(n->nredir.redirect);
+	    calcsize(n->nredir.n);
+	    break;
+      case NIF:
+	    calcsize(n->nif.elsepart);
+	    calcsize(n->nif.ifpart);
+	    calcsize(n->nif.test);
+	    break;
+      case NFOR:
+	    funcstringsize += strlen(n->nfor.var) + 1;
+	    calcsize(n->nfor.body);
+	    calcsize(n->nfor.args);
+	    break;
+      case NCASE:
+	    calcsize(n->ncase.cases);
+	    calcsize(n->ncase.expr);
+	    break;
+      case NCLIST:
+	    calcsize(n->nclist.body);
+	    calcsize(n->nclist.pattern);
+	    calcsize(n->nclist.next);
+	    break;
+      case NDEFUN:
+      case NARG:
+	    sizenodelist(n->narg.backquote);
+	    funcstringsize += strlen(n->narg.text) + 1;
+	    calcsize(n->narg.next);
+	    break;
+      case NTO:
+      case NCLOBBER:
+      case NFROM:
+      case NFROMTO:
+      case NAPPEND:
+	    calcsize(n->nfile.fname);
+	    calcsize(n->nfile.next);
+	    break;
+      case NTOFD:
+      case NFROMFD:
+	    calcsize(n->ndup.vname);
+	    calcsize(n->ndup.next);
+	    break;
+      case NHERE:
+      case NXHERE:
+	    calcsize(n->nhere.doc);
+	    calcsize(n->nhere.next);
+	    break;
+      case NNOT:
+	    calcsize(n->nnot.com);
+	    break;
+      };
+}
+
+
+
+STATIC void
+sizenodelist(lp)
+	struct nodelist *lp;
+{
+	while (lp) {
+		funcblocksize += SHELL_ALIGN(sizeof(struct nodelist));
+		calcsize(lp->n);
+		lp = lp->next;
+	}
+}
+
+
+
+STATIC union node *
+copynode(n)
+	union node *n;
+{
+	union node *new;
+
+      if (n == NULL)
+	    return NULL;
+      new = funcblock;
+      funcblock = (char *) funcblock + nodesize[n->type];
+      switch (n->type) {
+      case NSEMI:
+      case NAND:
+      case NOR:
+      case NWHILE:
+      case NUNTIL:
+	    new->nbinary.ch2 = copynode(n->nbinary.ch2);
+	    new->nbinary.ch1 = copynode(n->nbinary.ch1);
+	    break;
+      case NCMD:
+	    new->ncmd.redirect = copynode(n->ncmd.redirect);
+	    new->ncmd.args = copynode(n->ncmd.args);
+	    new->ncmd.backgnd = n->ncmd.backgnd;
+	    break;
+      case NPIPE:
+	    new->npipe.cmdlist = copynodelist(n->npipe.cmdlist);
+	    new->npipe.backgnd = n->npipe.backgnd;
+	    break;
+      case NREDIR:
+      case NBACKGND:
+      case NSUBSHELL:
+	    new->nredir.redirect = copynode(n->nredir.redirect);
+	    new->nredir.n = copynode(n->nredir.n);
+	    break;
+      case NIF:
+	    new->nif.elsepart = copynode(n->nif.elsepart);
+	    new->nif.ifpart = copynode(n->nif.ifpart);
+	    new->nif.test = copynode(n->nif.test);
+	    break;
+      case NFOR:
+	    new->nfor.var = nodesavestr(n->nfor.var);
+	    new->nfor.body = copynode(n->nfor.body);
+	    new->nfor.args = copynode(n->nfor.args);
+	    break;
+      case NCASE:
+	    new->ncase.cases = copynode(n->ncase.cases);
+	    new->ncase.expr = copynode(n->ncase.expr);
+	    break;
+      case NCLIST:
+	    new->nclist.body = copynode(n->nclist.body);
+	    new->nclist.pattern = copynode(n->nclist.pattern);
+	    new->nclist.next = copynode(n->nclist.next);
+	    break;
+      case NDEFUN:
+      case NARG:
+	    new->narg.backquote = copynodelist(n->narg.backquote);
+	    new->narg.text = nodesavestr(n->narg.text);
+	    new->narg.next = copynode(n->narg.next);
+	    break;
+      case NTO:
+      case NCLOBBER:
+      case NFROM:
+      case NFROMTO:
+      case NAPPEND:
+	    new->nfile.fname = copynode(n->nfile.fname);
+	    new->nfile.next = copynode(n->nfile.next);
+	    new->nfile.fd = n->nfile.fd;
+	    break;
+      case NTOFD:
+      case NFROMFD:
+	    new->ndup.vname = copynode(n->ndup.vname);
+	    new->ndup.dupfd = n->ndup.dupfd;
+	    new->ndup.next = copynode(n->ndup.next);
+	    new->ndup.fd = n->ndup.fd;
+	    break;
+      case NHERE:
+      case NXHERE:
+	    new->nhere.doc = copynode(n->nhere.doc);
+	    new->nhere.next = copynode(n->nhere.next);
+	    new->nhere.fd = n->nhere.fd;
+	    break;
+      case NNOT:
+	    new->nnot.com = copynode(n->nnot.com);
+	    break;
+      };
+      new->type = n->type;
+	return new;
+}
+
+
+STATIC struct nodelist *
+copynodelist(lp)
+	struct nodelist *lp;
+{
+	struct nodelist *start;
+	struct nodelist **lpp;
+
+	lpp = &start;
+	while (lp) {
+		*lpp = funcblock;
+		funcblock = (char *) funcblock +
+		    SHELL_ALIGN(sizeof(struct nodelist));
+		(*lpp)->n = copynode(lp->n);
+		lp = lp->next;
+		lpp = &(*lpp)->next;
+	}
+	*lpp = NULL;
+	return start;
+}
+
+
+
+STATIC char *
+nodesavestr(s)
+	char   *s;
+{
+	register char *p = s;
+	register char *q = funcstring;
+	char   *rtn = funcstring;
+
+	while ((*q++ = *p++) != 0)
+		continue;
+	funcstring = q;
+	return rtn;
+}
+
+#endif /* !KASH_SEPARATE_PARSER_ALLOCATOR */
+
+
+/*
+ * Free a parse tree.
+ */
+
+void
+freefunc(psh, n)
+        shinstance *psh;
+	union node *n;
+{
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	if (n)
+		pstackrelease(psh, n->pblock, "freefunc");
+#else
+	if (n)
+		ckfree(psh, n);
+#endif
+}
diff --git a/src/kash/generated/nodes.h b/src/kash/generated/nodes.h
new file mode 100644
index 0000000..324fcbe
--- /dev/null
+++ b/src/kash/generated/nodes.h
@@ -0,0 +1,207 @@
+/*
+ * This file was generated by mknodes.sh
+ */
+
+#define NSEMI 0
+#define NCMD 1
+#define NPIPE 2
+#define NREDIR 3
+#define NBACKGND 4
+#define NSUBSHELL 5
+#define NAND 6
+#define NOR 7
+#define NIF 8
+#define NWHILE 9
+#define NUNTIL 10
+#define NFOR 11
+#define NCASE 12
+#define NCLIST 13
+#define NDEFUN 14
+#define NARG 15
+#define NTO 16
+#define NCLOBBER 17
+#define NFROM 18
+#define NFROMTO 19
+#define NAPPEND 20
+#define NTOFD 21
+#define NFROMFD 22
+#define NHERE 23
+#define NXHERE 24
+#define NNOT 25
+
+
+
+struct nbinary {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	union node *ch1;
+	union node *ch2;
+};
+
+
+struct ncmd {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	int backgnd;
+	union node *args;
+	union node *redirect;
+};
+
+
+struct npipe {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	int backgnd;
+	struct nodelist *cmdlist;
+};
+
+
+struct nredir {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	union node *n;
+	union node *redirect;
+};
+
+
+struct nif {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	union node *test;
+	union node *ifpart;
+	union node *elsepart;
+};
+
+
+struct nfor {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	union node *args;
+	union node *body;
+	char *var;
+};
+
+
+struct ncase {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	union node *expr;
+	union node *cases;
+};
+
+
+struct nclist {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	union node *next;
+	union node *pattern;
+	union node *body;
+};
+
+
+struct narg {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	union node *next;
+	char *text;
+	struct nodelist *backquote;
+};
+
+
+struct nfile {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	int fd;
+	union node *next;
+	union node *fname;
+};
+
+
+struct ndup {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	int fd;
+	union node *next;
+	int dupfd;
+	union node *vname;
+};
+
+
+struct nhere {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	int fd;
+	union node *next;
+	union node *doc;
+};
+
+
+struct nnot {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	struct pstack_block *pblock;
+#endif
+	int type;
+	union node *com;
+};
+
+
+union node {
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+# ifdef __GNUC__
+	__extension__
+# endif
+	struct {
+		struct pstack_block *pblock;
+		int type;
+	};
+#else
+	int type;
+#endif
+	struct nbinary nbinary;
+	struct ncmd ncmd;
+	struct npipe npipe;
+	struct nredir nredir;
+	struct nif nif;
+	struct nfor nfor;
+	struct ncase ncase;
+	struct nclist nclist;
+	struct narg narg;
+	struct nfile nfile;
+	struct ndup ndup;
+	struct nhere nhere;
+	struct nnot nnot;
+};
+
+
+struct nodelist {
+	struct nodelist *next;
+	union node *n;
+};
+
+
+union node *copyfunc(struct shinstance *, union node *);
+void freefunc(struct shinstance *, union node *);
diff --git a/src/kash/generated/token.h b/src/kash/generated/token.h
new file mode 100644
index 0000000..c961f01
--- /dev/null
+++ b/src/kash/generated/token.h
@@ -0,0 +1,112 @@
+#define TEOF 0
+#define TNL 1
+#define TSEMI 2
+#define TBACKGND 3
+#define TAND 4
+#define TOR 5
+#define TPIPE 6
+#define TLP 7
+#define TRP 8
+#define TENDCASE 9
+#define TENDBQUOTE 10
+#define TREDIR 11
+#define TWORD 12
+#define TIF 13
+#define TTHEN 14
+#define TELSE 15
+#define TELIF 16
+#define TFI 17
+#define TWHILE 18
+#define TUNTIL 19
+#define TFOR 20
+#define TDO 21
+#define TDONE 22
+#define TBEGIN 23
+#define TEND 24
+#define TCASE 25
+#define TESAC 26
+#define TNOT 27
+
+/* Array indicating which tokens mark the end of a list */
+const char tokendlist[] = {
+	1,
+	0,
+	0,
+	0,
+	0,
+	0,
+	0,
+	0,
+	1,
+	1,
+	1,
+	0,
+	0,
+	0,
+	1,
+	1,
+	1,
+	1,
+	0,
+	0,
+	0,
+	1,
+	1,
+	0,
+	1,
+	0,
+	1,
+	0,
+};
+
+const char *const tokname[] = {
+	"end of file",
+	"newline",
+	"\";\"",
+	"\"&\"",
+	"\"&&\"",
+	"\"||\"",
+	"\"|\"",
+	"\"(\"",
+	"\")\"",
+	"\";;\"",
+	"\"`\"",
+	"redirection",
+	"word",
+	"\"if\"",
+	"\"then\"",
+	"\"else\"",
+	"\"elif\"",
+	"\"fi\"",
+	"\"while\"",
+	"\"until\"",
+	"\"for\"",
+	"\"do\"",
+	"\"done\"",
+	"\"{\"",
+	"\"}\"",
+	"\"case\"",
+	"\"esac\"",
+	"\"!\"",
+};
+
+#define KWDOFFSET 13
+
+const char *const parsekwd[] = {
+	"if",
+	"then",
+	"else",
+	"elif",
+	"fi",
+	"while",
+	"until",
+	"for",
+	"do",
+	"done",
+	"{",
+	"}",
+	"case",
+	"esac",
+	"!",
+	0
+};
diff --git a/src/kash/histedit.c b/src/kash/histedit.c
new file mode 100644
index 0000000..dc02e55
--- /dev/null
+++ b/src/kash/histedit.c
@@ -0,0 +1,546 @@
+/*	$NetBSD: histedit.c,v 1.36 2005/05/09 11:35:19 christos Exp $	*/
+
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)histedit.c	8.2 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: histedit.c,v 1.36 2005/05/09 11:35:19 christos Exp $");
+#endif /* not lint */
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+
+/*
+ * Editline and history functions (and glue).
+ */
+#include "shell.h"
+#include "parser.h"
+#include "var.h"
+#include "options.h"
+#include "main.h"
+#include "output.h"
+#include "mystring.h"
+#include "myhistedit.h"
+#include "error.h"
+
+#ifndef SMALL
+#include "eval.h"
+#include "memalloc.h"
+
+#define MAXHISTLOOPS	4	/* max recursions through fc */
+#define DEFEDITOR	"ed"	/* default editor *should* be $EDITOR */
+
+History *hist;	/* history cookie */
+EditLine *el;	/* editline cookie */
+int displayhist;
+static FILE *el_in, *el_out;
+unsigned char _el_fn_complete(EditLine *, int);
+
+STATIC const char *fc_replace(const char *, char *, char *);
+
+#ifdef DEBUG
+extern FILE *tracefile;
+#endif
+
+/*
+ * Set history and editing status.  Called whenever the status may
+ * have changed (figures out what to do).
+ */
+void
+histedit(void)
+{
+	FILE *el_err;
+
+#define editing (Eflag(psh) || Vflag(psh))
+
+	if (iflag(psh)) {
+		if (!hist) {
+			/*
+			 * turn history on
+			 */
+			INTOFF;
+			hist = history_init();
+			INTON;
+
+			if (hist != NULL)
+				sethistsize(histsizeval());
+			else
+				out2str(psh, "sh: can't initialize history\n");
+		}
+		if (editing && !el && isatty(0)) { /* && isatty(2) ??? */
+			/*
+			 * turn editing on
+			 */
+			char *term, *shname;
+
+			INTOFF;
+			if (el_in == NULL)
+				el_in = fdopen(0, "r");
+			if (el_out == NULL)
+				el_out = fdopen(2, "w");
+			if (el_in == NULL || el_out == NULL)
+				goto bad;
+			el_err = el_out;
+#if DEBUG
+			if (tracefile)
+				el_err = tracefile;
+#endif
+			term = lookupvar(psh, "TERM");
+			if (term)
+				setenv("TERM", term, 1);
+			else
+				unsetenv("TERM");
+			shname = psh->arg0;
+			if (shname[0] == '-')
+				shname++;
+			el = el_init(shname, el_in, el_out, el_err);
+			if (el != NULL) {
+				if (hist)
+					el_set(el, EL_HIST, history, hist);
+				el_set(el, EL_PROMPT, getprompt);
+				el_set(el, EL_SIGNAL, 1);
+				el_set(el, EL_ADDFN, "rl-complete",
+				    "ReadLine compatible completion function",
+				    _el_fn_complete);
+			} else {
+bad:
+				out2str(psh, "sh: can't initialize editing\n");
+			}
+			INTON;
+		} else if (!editing && el) {
+			INTOFF;
+			el_end(el);
+			el = NULL;
+			INTON;
+		}
+		if (el) {
+			if (Vflag(psh))
+				el_set(el, EL_EDITOR, "vi");
+			else if (Eflag(psh))
+				el_set(el, EL_EDITOR, "emacs");
+			el_set(el, EL_BIND, "^I",
+			    tabcomplete(psh) ? "rl-complete" : "ed-insert", NULL);
+			el_source(el, NULL);
+		}
+	} else {
+		INTOFF;
+		if (el) {	/* no editing if not interactive */
+			el_end(el);
+			el = NULL;
+		}
+		if (hist) {
+			history_end(hist);
+			hist = NULL;
+		}
+		INTON;
+	}
+}
+
+
+void
+sethistsize(shinstance *psh, const char *hs)
+{
+	int histsize;
+	HistEvent he;
+
+	if (hist != NULL) {
+		if (hs == NULL || *hs == '\0' ||
+		   (histsize = atoi(hs)) < 0)
+			histsize = 100;
+		history(hist, &he, H_SETSIZE, histsize);
+	}
+}
+
+void
+setterm(shinstance *psh, const char *term)
+{
+	if (el != NULL && term != NULL)
+		if (el_set(el, EL_TERMINAL, term) != 0) {
+			outfmt(psh->out2, "sh: Can't set terminal type %s\n", term);
+			outfmt(psh->out2, "sh: Using dumb terminal settings.\n");
+		}
+}
+
+int
+inputrc(argc, argv)
+	int argc;
+	char **argv;
+{
+	if (argc != 2) {
+		out2str(psh, "usage: inputrc file\n");
+		return 1;
+	}
+	if (el != NULL) {
+		if (el_source(el, argv[1])) {
+			out2str(psh, "inputrc: failed\n");
+			return 1;
+		} else
+			return 0;
+	} else {
+		out2str(psh, "sh: inputrc ignored, not editing\n");
+		return 1;
+	}
+}
+
+/*
+ *  This command is provided since POSIX decided to standardize
+ *  the Korn shell fc command.  Oh well...
+ */
+int
+histcmd(int argc, char **argv)
+{
+	int ch;
+	const char *editor = NULL;
+	HistEvent he;
+	int lflg = 0, nflg = 0, rflg = 0, sflg = 0;
+	int i, retval;
+	const char *firststr, *laststr;
+	int first, last, direction;
+	char *pat = NULL, *repl;	/* ksh "fc old=new" crap */
+	static int active = 0;
+	struct jmploc jmploc;
+	struct jmploc *volatile savehandler;
+	char editfile[MAXPATHLEN + 1];
+	FILE *efp;
+#ifdef __GNUC__
+	/* Avoid longjmp clobbering */
+	(void) &editor;
+	(void) &lflg;
+	(void) &nflg;
+	(void) &rflg;
+	(void) &sflg;
+	(void) &firststr;
+	(void) &laststr;
+	(void) &pat;
+	(void) &repl;
+	(void) &efp;
+	(void) &argc;
+	(void) &argv;
+#endif
+
+	if (hist == NULL)
+		error(psh, "history not active");
+
+	if (argc == 1)
+		error(psh, "missing history argument");
+
+	optreset = 1; optind = 1; /* initialize getopt */
+	while (not_fcnumber(argv[optind]) &&
+	      (ch = getopt(argc, argv, ":e:lnrs")) != -1)
+		switch ((char)ch) {
+		case 'e':
+			editor = optionarg;
+			break;
+		case 'l':
+			lflg = 1;
+			break;
+		case 'n':
+			nflg = 1;
+			break;
+		case 'r':
+			rflg = 1;
+			break;
+		case 's':
+			sflg = 1;
+			break;
+		case ':':
+			error(psh, "option -%c expects argument", optopt);
+			/* NOTREACHED */
+		case '?':
+		default:
+			error(psh, "unknown option: -%c", optopt);
+			/* NOTREACHED */
+		}
+	argc -= optind, argv += optind;
+
+	/*
+	 * If executing...
+	 */
+	if (lflg == 0 || editor || sflg) {
+		lflg = 0;	/* ignore */
+		editfile[0] = '\0';
+		/*
+		 * Catch interrupts to reset active counter and
+		 * cleanup temp files.
+		 */
+		if (setjmp(jmploc.loc)) {
+			active = 0;
+			if (*editfile)
+				unlink(editfile);
+			handler = savehandler;
+			longjmp(handler->loc, 1);
+		}
+		savehandler = handler;
+		handler = &jmploc;
+		if (++active > MAXHISTLOOPS) {
+			active = 0;
+			displayhist = 0;
+			error(psh, "called recursively too many times");
+		}
+		/*
+		 * Set editor.
+		 */
+		if (sflg == 0) {
+			if (editor == NULL &&
+			    (editor = bltinlookup(psh, "FCEDIT", 1)) == NULL &&
+			    (editor = bltinlookup(psh, "EDITOR", 1)) == NULL)
+				editor = DEFEDITOR;
+			if (editor[0] == '-' && editor[1] == '\0') {
+				sflg = 1;	/* no edit */
+				editor = NULL;
+			}
+		}
+	}
+
+	/*
+	 * If executing, parse [old=new] now
+	 */
+	if (lflg == 0 && argc > 0 &&
+	     ((repl = strchr(argv[0], '=')) != NULL)) {
+		pat = argv[0];
+		*repl++ = '\0';
+		argc--, argv++;
+	}
+	/*
+	 * determine [first] and [last]
+	 */
+	switch (argc) {
+	case 0:
+		firststr = lflg ? "-16" : "-1";
+		laststr = "-1";
+		break;
+	case 1:
+		firststr = argv[0];
+		laststr = lflg ? "-1" : argv[0];
+		break;
+	case 2:
+		firststr = argv[0];
+		laststr = argv[1];
+		break;
+	default:
+		error(psh, "too many args");
+		/* NOTREACHED */
+	}
+	/*
+	 * Turn into event numbers.
+	 */
+	first = str_to_event(firststr, 0);
+	last = str_to_event(laststr, 1);
+
+	if (rflg) {
+		i = last;
+		last = first;
+		first = i;
+	}
+	/*
+	 * XXX - this should not depend on the event numbers
+	 * always increasing.  Add sequence numbers or offset
+	 * to the history element in next (diskbased) release.
+	 */
+	direction = first < last ? H_PREV : H_NEXT;
+
+	/*
+	 * If editing, grab a temp file.
+	 */
+	if (editor) {
+		int fd;
+		INTOFF;		/* easier */
+		snprintf(editfile, sizeof(editfile), "%s_shXXXXXX", _PATH_TMP);
+		if ((fd = mkstemp(editfile)) < 0)
+			error(psh, "can't create temporary file %s", editfile);
+		if ((efp = fdopen(fd, "w")) == NULL) {
+			shfile_close(&psh->fdtab, fd);
+			error(psh, "can't allocate stdio buffer for temp");
+		}
+	}
+
+	/*
+	 * Loop through selected history events.  If listing or executing,
+	 * do it now.  Otherwise, put into temp file and call the editor
+	 * after.
+	 *
+	 * The history interface needs rethinking, as the following
+	 * convolutions will demonstrate.
+	 */
+	history(hist, &he, H_FIRST);
+	retval = history(hist, &he, H_NEXT_EVENT, first);
+	for (;retval != -1; retval = history(hist, &he, direction)) {
+		if (lflg) {
+			if (!nflg)
+				out1fmt(psh, "%5d ", he.num);
+			out1str(psh, he.str);
+		} else {
+			const char *s = pat ?
+			   fc_replace(he.str, pat, repl) : he.str;
+
+			if (sflg) {
+				if (displayhist) {
+					out2str(psh, s);
+				}
+
+				evalstring(psh, strcpy(stalloc(psh, strlen(s) + 1), s), 0);
+				if (displayhist && hist) {
+					/*
+					 *  XXX what about recursive and
+					 *  relative histnums.
+					 */
+					history(hist, &he, H_ENTER, s);
+				}
+			} else
+				fputs(s, efp);
+		}
+		/*
+		 * At end?  (if we were to lose last, we'd sure be
+		 * messed up).
+		 */
+		if (he.num == last)
+			break;
+	}
+	if (editor) {
+		char *editcmd;
+
+		fclose(efp);
+		editcmd = stalloc(psh, strlen(editor) + strlen(editfile) + 2);
+		sprintf(editcmd, "%s %s", editor, editfile);
+		evalstring(psh, editcmd, 0);	/* XXX - should use no JC command */
+		INTON;
+		readcmdfile(psh, editfile);	/* XXX - should read back - quick tst */
+		unlink(editfile);
+	}
+
+	if (lflg == 0 && active > 0)
+		--active;
+	if (displayhist)
+		displayhist = 0;
+	return 0;
+}
+
+STATIC const char *
+fc_replace(const char *s, char *p, char *r)
+{
+	char *dest;
+	int plen = strlen(p);
+
+	STARTSTACKSTR(psh, dest);
+	while (*s) {
+		if (*s == *p && strncmp(s, p, plen) == 0) {
+			while (*r)
+				STPUTC(psh, *r++, dest);
+			s += plen;
+			*p = '\0';	/* so no more matches */
+		} else
+			STPUTC(psh, *s++, dest);
+	}
+	STACKSTRNUL(psh, dest);
+	dest = grabstackstr(psh, dest);
+
+	return (dest);
+}
+
+int
+not_fcnumber(char *s)
+{
+	if (s == NULL)
+		return 0;
+        if (*s == '-')
+                s++;
+	return (!is_number(s));
+}
+
+int
+str_to_event(const char *str, int last)
+{
+	HistEvent he;
+	const char *s = str;
+	int relative = 0;
+	int i, retval;
+
+	retval = history(hist, &he, H_FIRST);
+	switch (*s) {
+	case '-':
+		relative = 1;
+		/*FALLTHROUGH*/
+	case '+':
+		s++;
+	}
+	if (is_number(s)) {
+		i = atoi(s);
+		if (relative) {
+			while (retval != -1 && i--) {
+				retval = history(hist, &he, H_NEXT);
+			}
+			if (retval == -1)
+				retval = history(hist, &he, H_LAST);
+		} else {
+			retval = history(hist, &he, H_NEXT_EVENT, i);
+			if (retval == -1) {
+				/*
+				 * the notion of first and last is
+				 * backwards to that of the history package
+				 */
+				retval = history(hist, &he,
+						last ? H_FIRST : H_LAST);
+			}
+		}
+		if (retval == -1)
+			error(psh, "history number %s not found (internal error)",
+			       str);
+	} else {
+		/*
+		 * pattern
+		 */
+		retval = history(hist, &he, H_PREV_STR, str);
+		if (retval == -1)
+			error(psh, "history pattern not found: %s", str);
+	}
+	return (he.num);
+}
+#else /* SMALL */
+int
+histcmd(shinstance *psh, int argc, char **argv)
+{
+	error(psh, "not compiled with history support");
+	/* NOTREACHED */
+	return -1;
+}
+int
+inputrc(shinstance *psh, int argc, char **argv)
+{
+	error(psh, "not compiled with history support");
+	/* NOTREACHED */
+	return -1;
+}
+#endif /* SMALL */
diff --git a/src/kash/init.h b/src/kash/init.h
new file mode 100644
index 0000000..5187028
--- /dev/null
+++ b/src/kash/init.h
@@ -0,0 +1,39 @@
+/*	$NetBSD: init.h,v 1.10 2003/08/07 09:05:32 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)init.h	8.2 (Berkeley) 5/4/95
+ */
+
+void init(struct shinstance *);
+void reset(struct shinstance *);
+void initshellproc(struct shinstance *);
diff --git a/src/kash/input.c b/src/kash/input.c
new file mode 100644
index 0000000..fc9716b
--- /dev/null
+++ b/src/kash/input.c
@@ -0,0 +1,574 @@
+/*	$NetBSD: input.c,v 1.39 2003/08/07 09:05:32 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)input.c	8.3 (Berkeley) 6/9/95";
+#else
+__RCSID("$NetBSD: input.c,v 1.39 2003/08/07 09:05:32 agc Exp $");
+#endif /* not lint */
+#endif
+
+#include <stdio.h>	/* defines BUFSIZ */
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+/*
+ * This file implements the input routines used by the parser.
+ */
+
+#include "shell.h"
+#include "redir.h"
+#include "syntax.h"
+#include "input.h"
+#include "output.h"
+#include "options.h"
+#include "memalloc.h"
+#include "error.h"
+#include "alias.h"
+#include "parser.h"
+#include "myhistedit.h"
+#include "shinstance.h"
+
+#define EOF_NLEFT -99		/* value of parsenleft when EOF pushed back */
+
+//MKINIT
+//struct strpush {
+//	struct strpush *prev;	/* preceding string on stack */
+//	char *prevstring;
+//	int prevnleft;
+//	int prevlleft;
+//	struct alias *ap;	/* if push was associated with an alias */
+//};
+//
+///*
+// * The parsefile structure pointed to by the global variable parsefile
+// * contains information about the current file being read.
+// */
+//
+//MKINIT
+//struct parsefile {
+//	struct parsefile *prev;	/* preceding file on stack */
+//	int linno;		/* current line */
+//	int fd;			/* file descriptor (or -1 if string) */
+//	int nleft;		/* number of chars left in this line */
+//	int lleft;		/* number of chars left in this buffer */
+//	char *nextc;		/* next char in buffer */
+//	char *buf;		/* input buffer */
+//	struct strpush *strpush; /* for pushing strings at this level */
+//	struct strpush basestrpush; /* so pushing one is fast */
+//};
+//
+//
+//int plinno = 1;			/* input line number */
+//int parsenleft;			/* copy of parsefile->nleft */
+//MKINIT int parselleft;		/* copy of parsefile->lleft */
+//char *parsenextc;		/* copy of parsefile->nextc */
+//MKINIT struct parsefile basepf;	/* top level input file */
+//MKINIT char basebuf[BUFSIZ];	/* buffer for top level input file */
+//struct parsefile *parsefile = &basepf;	/* current input file */
+//int init_editline = 0;		/* editline library initialized? */
+//int whichprompt;		/* 1 == PS1, 2 == PS2 */
+//
+//#ifndef SMALL
+//EditLine *el;			/* cookie for editline package */
+//#endif
+
+STATIC void pushfile(shinstance *psh);
+static int preadfd(shinstance *psh);
+
+#ifdef mkinit
+INCLUDE <stdio.h>
+INCLUDE "input.h"
+INCLUDE "error.h"
+
+INIT {
+	psh->basepf.nextc = psh->basepf.buf = psh->basebuf;
+}
+
+RESET {
+	if (psh->exception != EXSHELLPROC)
+		psh->parselleft = psh->parsenleft = 0;	/* clear input buffer */
+	popallfiles(psh);
+}
+
+SHELLPROC {
+	popallfiles(psh);
+}
+#endif
+
+
+/*
+ * Read a line from the script.
+ */
+
+char *
+pfgets(shinstance *psh, char *line, int len)
+{
+	char *p = line;
+	int nleft = len;
+	int c;
+
+	while (--nleft > 0) {
+		c = pgetc_macro(psh);
+		if (c == PEOF) {
+			if (p == line)
+				return NULL;
+			break;
+		}
+		*p++ = c;
+		if (c == '\n')
+			break;
+	}
+	*p = '\0';
+	return line;
+}
+
+
+
+/*
+ * Read a character from the script, returning PEOF on end of file.
+ * Nul characters in the input are silently discarded.
+ */
+
+int
+pgetc(shinstance *psh)
+{
+	return pgetc_macro(psh);
+}
+
+
+static int
+preadfd_inner(shinstance *psh, char *buf, int bufsize)
+{
+	int nr;
+retry:
+#ifndef SMALL
+	if (psh->parsefile->fd == 0 && psh->el) {
+		static const char *rl_cp;
+		static int el_len;
+
+		if (rl_cp == NULL)
+			rl_cp = el_gets(psh->el, &el_len);
+		if (rl_cp == NULL)
+			nr = 0;
+		else {
+			nr = el_len;
+			if (nr > bufsize)
+				nr = bufsize;
+			memcpy(buf, rl_cp, nr);
+			if (nr != el_len) {
+				el_len -= nr;
+				rl_cp += nr;
+			} else
+				rl_cp = 0;
+		}
+
+	} else
+#endif
+		nr = shfile_read(&psh->fdtab, psh->parsefile->fd, buf, bufsize);
+
+
+	if (nr <= 0) {
+                if (nr < 0) {
+                        if (errno == EINTR)
+                                goto retry;
+                        if (psh->parsefile->fd == 0 && errno == EWOULDBLOCK) {
+                                int flags = shfile_fcntl(&psh->fdtab, 0, F_GETFL, 0);
+                                if (flags >= 0 && flags & O_NONBLOCK) {
+                                        flags &=~ O_NONBLOCK;
+                                        if (shfile_fcntl(&psh->fdtab, 0, F_SETFL, flags) >= 0) {
+						out2str(psh, "sh: turning off NDELAY mode\n");
+                                                goto retry;
+                                        }
+                                }
+                        }
+                }
+                nr = -1;
+	}
+	return nr;
+}
+
+
+
+static int
+preadfd(shinstance *psh)
+{
+	int nr;
+	char *buf = psh->parsefile->buf;
+	psh->parsenextc = buf;
+
+#ifdef SH_DEAL_WITH_CRLF
+	/* Convert CRLF to LF. */
+	nr = preadfd_inner(psh, buf, BUFSIZ - 9);
+	if (nr > 0) {
+		char *cr = memchr(buf, '\r', nr);
+		while (cr) {
+			size_t left = nr - (cr - buf);
+
+			if (left > 1 && cr[1] == '\n') {
+				left--;
+				nr--;
+				memmove(cr, cr + 1, left);
+				cr = memchr(cr, '\r', left);
+			} else if (left == 1) {
+        			/* Special case: \r at buffer end.  Read one more char. Screw \r\r\n sequences. */
+				int nr2 = preadfd_inner(psh, cr + 1, 1);
+				if (nr2 != 1) 
+					break;
+				if (cr[1] == '\n') {
+					*cr = '\n';
+				} else {
+					nr++;
+				}
+				break;
+			} else {
+				cr = memchr(cr + 1, '\r', left);
+			}
+		}
+	}
+#else
+	nr = preadfd_inner(psh, buf, BUFSIZ - 8);
+#endif
+	return nr;
+}
+
+/*
+ * Refill the input buffer and return the next input character:
+ *
+ * 1) If a string was pushed back on the input, pop it;
+ * 2) If an EOF was pushed back (parsenleft == EOF_NLEFT) or we are reading
+ *    from a string so we can't refill the buffer, return EOF.
+ * 3) If the is more stuff in this buffer, use it else call read to fill it.
+ * 4) Process input up to the next newline, deleting nul characters.
+ */
+
+int
+preadbuffer(shinstance *psh)
+{
+	char *p, *q;
+	int more;
+#ifndef SMALL
+	int something;
+#endif
+	char savec;
+
+	if (psh->parsefile->strpush) {
+		popstring(psh);
+		if (--psh->parsenleft >= 0)
+			return (*psh->parsenextc++);
+	}
+	if (psh->parsenleft == EOF_NLEFT || psh->parsefile->buf == NULL)
+		return PEOF;
+	flushout(&psh->output);
+	flushout(&psh->errout);
+
+again:
+	if (psh->parselleft <= 0) {
+		if ((psh->parselleft = preadfd(psh)) == -1) {
+			psh->parselleft = psh->parsenleft = EOF_NLEFT;
+			return PEOF;
+		}
+	}
+
+	q = p = psh->parsenextc;
+
+	/* delete nul characters */
+#ifndef SMALL
+	something = 0;
+#endif
+	for (more = 1; more;) {
+		switch (*p) {
+		case '\0':
+			p++;	/* Skip nul */
+			goto check;
+
+		case '\t':
+		case ' ':
+			break;
+
+		case '\n':
+			psh->parsenleft = (int)(q - psh->parsenextc);
+			more = 0; /* Stop processing here */
+			break;
+
+		default:
+#ifndef SMALL
+			something = 1;
+#endif
+			break;
+		}
+
+		*q++ = *p++;
+check:
+		if (--psh->parselleft <= 0) {
+			psh->parsenleft = (int)(q - psh->parsenextc - 1);
+			if (psh->parsenleft < 0)
+				goto again;
+			*q = '\0';
+			more = 0;
+		}
+	}
+
+	savec = *q;
+	*q = '\0';
+
+#ifndef SMALL
+	if (psh->parsefile->fd == 0 && hist && something) {
+		HistEvent he;
+		INTOFF;
+		history(hist, &he, psh->whichprompt == 1? H_ENTER : H_APPEND,
+		    psh->parsenextc);
+		INTON;
+	}
+#endif
+
+	if (vflag(psh)) {
+		out2str(psh, psh->parsenextc);
+		flushout(psh->out2);
+	}
+
+	*q = savec;
+
+	return *psh->parsenextc++;
+}
+
+/*
+ * Undo the last call to pgetc.  Only one character may be pushed back.
+ * PEOF may be pushed back.
+ */
+
+void
+pungetc(shinstance *psh)
+{
+	psh->parsenleft++;
+	psh->parsenextc--;
+}
+
+/*
+ * Push a string back onto the input at this current parsefile level.
+ * We handle aliases this way.
+ */
+void
+pushstring(shinstance *psh, char *s, size_t len, void *ap)
+{
+	struct strpush *sp;
+
+	INTOFF;
+/*dprintf("*** calling pushstring: %s, %d\n", s, len);*/
+	if (psh->parsefile->strpush) {
+		sp = ckmalloc(psh, sizeof (struct strpush));
+		sp->prev = psh->parsefile->strpush;
+		psh->parsefile->strpush = sp;
+	} else
+		sp = psh->parsefile->strpush = &(psh->parsefile->basestrpush);
+	sp->prevstring = psh->parsenextc;
+	sp->prevnleft = psh->parsenleft;
+	sp->prevlleft = psh->parselleft;
+	sp->ap = (struct alias *)ap;
+	if (ap)
+		((struct alias *)ap)->flag |= ALIASINUSE;
+	psh->parsenextc = s;
+	psh->parsenleft = (int)len;
+	INTON;
+}
+
+void
+popstring(shinstance *psh)
+{
+	struct strpush *sp = psh->parsefile->strpush;
+
+	INTOFF;
+	psh->parsenextc = sp->prevstring;
+	psh->parsenleft = sp->prevnleft;
+	psh->parselleft = sp->prevlleft;
+/*dprintf("*** calling popstring: restoring to '%s'\n", psh->parsenextc);*/
+	if (sp->ap)
+		sp->ap->flag &= ~ALIASINUSE;
+	psh->parsefile->strpush = sp->prev;
+	if (sp != &(psh->parsefile->basestrpush))
+		ckfree(psh, sp);
+	INTON;
+}
+
+/*
+ * Set the input to take input from a file.  If push is set, push the
+ * old input onto the stack first.
+ */
+
+void
+setinputfile(shinstance *psh, const char *fname, int push)
+{
+	int fd;
+	int fd2;
+
+	INTOFF;
+/** @todo shfile fixme */
+	if ((fd = shfile_open(&psh->fdtab, fname, O_RDONLY, 0)) < 0)
+		error(psh, "Can't open %s", fname);
+	if (fd < 10) {
+		fd2 = movefd_above(psh, fd, 10);
+		if (fd2 < 0)
+			error(psh, "Out of file descriptors");
+		fd = fd2;
+	}
+	setinputfd(psh, fd, push);
+	INTON;
+}
+
+
+/*
+ * Like setinputfile, but takes an open file descriptor.  Call this with
+ * interrupts off.
+ */
+
+void
+setinputfd(shinstance *psh, int fd, int push)
+{
+	(void) shfile_cloexec(&psh->fdtab, fd, 1 /* close it */);
+	if (push) {
+		pushfile(psh);
+		psh->parsefile->buf = ckmalloc(psh, BUFSIZ);
+	}
+	if (psh->parsefile->fd > 0)
+		shfile_close(&psh->fdtab, psh->parsefile->fd);
+	psh->parsefile->fd = fd;
+	if (psh->parsefile->buf == NULL)
+		psh->parsefile->buf = ckmalloc(psh, BUFSIZ);
+	psh->parselleft = psh->parsenleft = 0;
+	psh->plinno = 1;
+}
+
+
+/*
+ * Like setinputfile, but takes input from a string.
+ */
+
+void
+setinputstring(shinstance *psh, char *string, int push)
+{
+	INTOFF;
+	if (push)
+		pushfile(psh);
+	psh->parsenextc = string;
+	psh->parselleft = psh->parsenleft = (int)strlen(string);
+	psh->parsefile->buf = NULL;
+	psh->plinno = 1;
+	INTON;
+}
+
+
+
+/*
+ * To handle the "." command, a stack of input files is used.  Pushfile
+ * adds a new entry to the stack and popfile restores the previous level.
+ */
+
+STATIC void
+pushfile(shinstance *psh)
+{
+	struct parsefile *pf;
+
+	psh->parsefile->nleft = psh->parsenleft;
+	psh->parsefile->lleft = psh->parselleft;
+	psh->parsefile->nextc = psh->parsenextc;
+	psh->parsefile->linno = psh->plinno;
+	pf = (struct parsefile *)ckmalloc(psh, sizeof (struct parsefile));
+	pf->prev = psh->parsefile;
+	pf->fd = -1;
+	pf->strpush = NULL;
+	pf->basestrpush.prev = NULL;
+	psh->parsefile = pf;
+}
+
+
+void
+popfile(shinstance *psh)
+{
+	struct parsefile *pf = psh->parsefile;
+
+	INTOFF;
+	if (pf->fd >= 0)
+		shfile_close(&psh->fdtab, pf->fd);
+	if (pf->buf)
+		ckfree(psh, pf->buf);
+	while (pf->strpush)
+		popstring(psh);
+	psh->parsefile = pf->prev;
+	ckfree(psh, pf);
+	psh->parsenleft = psh->parsefile->nleft;
+	psh->parselleft = psh->parsefile->lleft;
+	psh->parsenextc = psh->parsefile->nextc;
+	psh->plinno = psh->parsefile->linno;
+	INTON;
+}
+
+
+/*
+ * Return to top level.
+ */
+
+void
+popallfiles(shinstance *psh)
+{
+	while (psh->parsefile != &psh->basepf)
+		popfile(psh);
+}
+
+
+
+/*
+ * Close the file(s) that the shell is reading commands from.  Called
+ * after a fork is done.
+ *
+ * Takes one arg, vfork, which tells it to not modify its global vars
+ * as it is still running in the parent.
+ *
+ * This code is (probably) unnecessary as the 'close on exec' flag is
+ * set and should be enough.  In the vfork case it is definitely wrong
+ * to close the fds as another fork() may be done later to feed data
+ * from a 'here' document into a pipe and we don't want to close the
+ * pipe!
+ */
+
+void
+closescript(shinstance *psh)
+{
+	popallfiles(psh);
+	if (psh->parsefile->fd > 0) {
+		shfile_close(&psh->fdtab, psh->parsefile->fd);
+		psh->parsefile->fd = 0;
+	}
+}
diff --git a/src/kash/input.h b/src/kash/input.h
new file mode 100644
index 0000000..5d0d64e
--- /dev/null
+++ b/src/kash/input.h
@@ -0,0 +1,62 @@
+/*	$NetBSD: input.h,v 1.15 2003/08/07 09:05:33 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)input.h	8.2 (Berkeley) 5/4/95
+ */
+
+/* PEOF (the end of file marker) is defined in syntax.h */
+
+/*
+ * The input line number.  Input.c just defines this variable, and saves
+ * and restores it when files are pushed and popped.  The user of this
+ * package must set its value.
+ */
+//extern int plinno;
+//extern int parsenleft;		/* number of characters left in input buffer */
+//extern char *parsenextc;	/* next character in input buffer */
+//extern int init_editline;	/* 0 == not setup, 1 == OK, -1 == failed */
+
+char *pfgets(struct shinstance *, char *, int);
+int pgetc(struct shinstance *);
+int preadbuffer(struct shinstance *);
+void pungetc(struct shinstance *);
+void pushstring(struct shinstance *, char *, size_t, void *);
+void popstring(struct shinstance *);
+void setinputfile(struct shinstance *, const char *, int);
+void setinputfd(struct shinstance *, int, int);
+void setinputstring(struct shinstance *, char *, int);
+void popfile(struct shinstance *);
+void popallfiles(struct shinstance *);
+void closescript(struct shinstance *);
+
+#define pgetc_macro(psh)	(--(psh)->parsenleft >= 0? *(psh)->parsenextc++ : preadbuffer(psh))
diff --git a/src/kash/jobs.c b/src/kash/jobs.c
new file mode 100644
index 0000000..43f359b
--- /dev/null
+++ b/src/kash/jobs.c
@@ -0,0 +1,1521 @@
+/*	$NetBSD: jobs.c,v 1.63 2005/06/01 15:41:19 lukem Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)jobs.c	8.5 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: jobs.c,v 1.63 2005/06/01 15:41:19 lukem Exp $");
+#endif /* not lint */
+#endif
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <sys/types.h>
+
+#include "shell.h"
+#if JOBS && !defined(_MSC_VER)
+# include <termios.h>
+#endif
+#include "redir.h"
+#include "show.h"
+#include "main.h"
+#include "parser.h"
+#include "nodes.h"
+#include "jobs.h"
+#include "options.h"
+#include "trap.h"
+#include "syntax.h"
+#include "input.h"
+#include "output.h"
+#include "memalloc.h"
+#include "error.h"
+#include "mystring.h"
+#include "init.h"
+#include "shinstance.h"
+
+//static struct job *jobtab;		/* array of jobs */
+//static int njobs;			/* size of array */
+//static int jobs_invalid;		/* set in child */
+//MKINIT pid_t backgndpid = -1;	/* pid of last background process */
+#if JOBS
+//int initialpgrp;		/* pgrp of shell on invocation */
+//static int curjob = -1;		/* current job */
+#endif
+//static int ttyfd = -1;
+
+STATIC void restartjob(shinstance *, struct job *);
+STATIC void freejob(shinstance *, struct job *);
+STATIC struct job *getjob(shinstance *, const char *, int);
+STATIC shpid dowait(shinstance *, int, struct job *);
+STATIC shpid waitproc(shinstance *, int, struct job *, int *);
+STATIC void cmdtxt(shinstance *, union node *);
+STATIC void cmdlist(shinstance *, union node *, int);
+STATIC void cmdredirlist(shinstance *, union node *, int);
+STATIC void cmdputs(shinstance *, const char *);
+STATIC shpid forkparent(shinstance *psh, struct job *jp, union node *n, int mode, shpid pid);
+STATIC void forkchild(shinstance *psh, shpid pgrp, union node *n, int mode);
+#ifdef KASH_USE_FORKSHELL2
+# ifndef SH_FORKED_MODE
+struct forkshell2args
+{
+	shinstance *psh;
+	int mode;
+	shpid pgrp; 	/**< The forkchild() pgrp argument (-1 if not in group). */
+	union node *n;
+	void *argp; 	/**< Points to child callback data following this structure. */
+	int (* child)(shinstance *, union node *, void *);
+	struct stackmark smark; /* do we need this? */
+};
+static int forkshell2_thread(shinstance *psh, void *argp);
+# endif
+#endif
+
+
+/*
+ * Turn job control on and off.
+ *
+ * Note:  This code assumes that the third arg to ioctl is a character
+ * pointer, which is true on Berkeley systems but not System V.  Since
+ * System V doesn't have job control yet, this isn't a problem now.
+ */
+
+//MKINIT int jobctl;
+
+void
+setjobctl(shinstance *psh, int on)
+{
+	if (on == psh->jobctl || psh->rootshell == 0)
+		return;
+	if (on) {
+		int err;
+		int i;
+		if (psh->ttyfd != -1)
+			shfile_close(&psh->fdtab, psh->ttyfd);
+		if ((psh->ttyfd = shfile_open(&psh->fdtab, "/dev/tty", O_RDWR, 0)) == -1) {
+			for (i = 0; i < 3; i++) {
+				if (shfile_isatty(&psh->fdtab, i)
+				 && (psh->ttyfd = shfile_dup(&psh->fdtab, i)) != -1)
+					break;
+			}
+			if (i == 3)
+				goto out;
+		}
+		/* Move to a high fd */
+		for (i = 10; i > 2; i--) {
+			if ((err = shfile_fcntl(&psh->fdtab, psh->ttyfd, F_DUPFD, (1 << i) - 1)) != -1)
+				break;
+		}
+		if (err != -1) {
+			shfile_close(&psh->fdtab, psh->ttyfd);
+			psh->ttyfd = err;
+		}
+                err = shfile_cloexec(&psh->fdtab, psh->ttyfd, 1);
+		if (err == -1) {
+			shfile_close(&psh->fdtab, psh->ttyfd);
+			psh->ttyfd = -1;
+			goto out;
+		}
+		do { /* while we are in the background */
+			if ((psh->initialpgrp = sh_tcgetpgrp(psh, psh->ttyfd)) < 0) {
+out:
+				out2str(psh, "sh: can't access tty; job control turned off\n");
+				mflag(psh) = 0;
+				return;
+			}
+			if (psh->initialpgrp == -1)
+				psh->initialpgrp = sh_getpgrp(psh);
+			else if (psh->initialpgrp != sh_getpgrp(psh)) {
+				sh_killpg(psh, 0, SIGTTIN);
+				continue;
+			}
+		} while (0);
+
+		setsignal(psh, SIGTSTP);
+		setsignal(psh, SIGTTOU);
+		setsignal(psh, SIGTTIN);
+		if (sh_getpgid(psh, 0) != psh->rootpid && sh_setpgid(psh, 0, psh->rootpid) == -1)
+			error(psh, "Cannot set process group (%s) at %d",
+			    sh_strerror(psh, errno), __LINE__);
+		if (sh_tcsetpgrp(psh, psh->ttyfd, psh->rootpid) == -1)
+			error(psh, "Cannot set tty process group (%s) at %d",
+			    sh_strerror(psh, errno), __LINE__);
+	} else { /* turning job control off */
+		if (sh_getpgid(psh, 0) != psh->initialpgrp && sh_setpgid(psh, 0, psh->initialpgrp) == -1)
+			error(psh, "Cannot set process group (%s) at %d",
+			    sh_strerror(psh, errno), __LINE__);
+		if (sh_tcsetpgrp(psh, psh->ttyfd, psh->initialpgrp) == -1)
+			error(psh, "Cannot set tty process group (%s) at %d",
+			    sh_strerror(psh, errno), __LINE__);
+		shfile_close(&psh->fdtab, psh->ttyfd);
+		psh->ttyfd = -1;
+		setsignal(psh, SIGTSTP);
+		setsignal(psh, SIGTTOU);
+		setsignal(psh, SIGTTIN);
+	}
+	psh->jobctl = on;
+}
+
+
+#ifdef mkinit
+INCLUDE <stdlib.h>
+
+SHELLPROC {
+	psh->backgndpid = -1;
+#if JOBS
+	psh->jobctl = 0;
+#endif
+}
+
+#endif
+
+
+
+#if JOBS
+int
+fgcmd(shinstance *psh, int argc, char **argv)
+{
+	struct job *jp;
+	int i;
+	int status;
+
+	nextopt(psh, "");
+	jp = getjob(psh, *psh->argptr, 0);
+	if (jp->jobctl == 0)
+		error(psh, "job not created under job control");
+	out1fmt(psh, "%s", jp->ps[0].cmd);
+	for (i = 1; i < jp->nprocs; i++)
+		out1fmt(psh, " | %s", jp->ps[i].cmd );
+	out1c(psh, '\n');
+	output_flushall(psh);
+
+	for (i = 0; i < jp->nprocs; i++)
+	    if (sh_tcsetpgrp(psh, psh->ttyfd, jp->ps[i].pid) != -1)
+		    break;
+
+	if (i >= jp->nprocs) {
+		error(psh, "Cannot set tty process group (%s) at %d",
+		    sh_strerror(psh, errno), __LINE__);
+	}
+	restartjob(psh, jp);
+	INTOFF;
+	status = waitforjob(psh, jp);
+	INTON;
+	return status;
+}
+
+static void
+set_curjob(shinstance *psh, struct job *jp, int mode)
+{
+	struct job *jp1, *jp2;
+	int i, ji;
+
+	ji = (int)(jp - psh->jobtab);
+
+	/* first remove from list */
+	if (ji == psh->curjob)
+		psh->curjob = jp->prev_job;
+	else {
+		for (i = 0; i < psh->njobs; i++) {
+			if (psh->jobtab[i].prev_job != ji)
+				continue;
+			psh->jobtab[i].prev_job = jp->prev_job;
+			break;
+		}
+	}
+
+	/* Then re-insert in correct position */
+	switch (mode) {
+	case 0:	/* job being deleted */
+		jp->prev_job = -1;
+		break;
+	case 1:	/* newly created job or backgrounded job,
+		   put after all stopped jobs. */
+		if (psh->curjob != -1 && psh->jobtab[psh->curjob].state == JOBSTOPPED) {
+			for (jp1 = psh->jobtab + psh->curjob; ; jp1 = jp2) {
+				if (jp1->prev_job == -1)
+					break;
+				jp2 = psh->jobtab + jp1->prev_job;
+				if (jp2->state != JOBSTOPPED)
+					break;
+			}
+			jp->prev_job = jp1->prev_job;
+			jp1->prev_job = ji;
+			break;
+		}
+		/* FALLTHROUGH */
+	case 2:	/* newly stopped job - becomes psh->curjob */
+		jp->prev_job = psh->curjob;
+		psh->curjob = ji;
+		break;
+	}
+}
+
+int
+bgcmd(shinstance *psh, int argc, char **argv)
+{
+	struct job *jp;
+	int i;
+
+	nextopt(psh, "");
+	do {
+		jp = getjob(psh, *psh->argptr, 0);
+		if (jp->jobctl == 0)
+			error(psh, "job not created under job control");
+		set_curjob(psh, jp, 1);
+		out1fmt(psh, "[%ld] %s", (long)(jp - psh->jobtab + 1), jp->ps[0].cmd);
+		for (i = 1; i < jp->nprocs; i++)
+			out1fmt(psh, " | %s", jp->ps[i].cmd );
+		out1c(psh, '\n');
+		output_flushall(psh);
+		restartjob(psh, jp);
+	} while (*psh->argptr && *++psh->argptr);
+	return 0;
+}
+
+
+STATIC void
+restartjob(shinstance *psh, struct job *jp)
+{
+	struct procstat *ps;
+	int i;
+
+	if (jp->state == JOBDONE)
+		return;
+	INTOFF;
+	for (i = 0; i < jp->nprocs; i++)
+		if (sh_killpg(psh, jp->ps[i].pid, SIGCONT) != -1)
+			break;
+	if (i >= jp->nprocs)
+		error(psh, "Cannot continue job (%s)", sh_strerror(psh, errno));
+	for (ps = jp->ps, i = jp->nprocs ; --i >= 0 ; ps++) {
+		if (WIFSTOPPED(ps->status)) {
+			ps->status = -1;
+			jp->state = JOBRUNNING;
+		}
+	}
+	INTON;
+}
+#endif
+
+static void
+showjob(shinstance *psh, struct output *out, struct job *jp, int mode)
+{
+	int procno;
+	int st;
+	struct procstat *ps;
+	size_t col;
+	char s[64];
+
+#if JOBS
+	if (mode & SHOW_PGID) {
+		/* just output process (group) id of pipeline */
+		outfmt(out, "%" SHPID_PRI "\n", jp->ps->pid);
+		return;
+	}
+#endif
+
+	procno = jp->nprocs;
+	if (!procno)
+		return;
+
+	if (mode & SHOW_PID)
+		mode |= SHOW_MULTILINE;
+
+	if ((procno > 1 && !(mode & SHOW_MULTILINE))
+	    || (mode & SHOW_SIGNALLED)) {
+		/* See if we have more than one status to report */
+		ps = jp->ps;
+		st = ps->status;
+		do {
+			int st1 = ps->status;
+			if (st1 != st)
+				/* yes - need multi-line output */
+				mode |= SHOW_MULTILINE;
+			if (st1 == -1 || !(mode & SHOW_SIGNALLED) || WIFEXITED(st1))
+				continue;
+			if (WIFSTOPPED(st1) || ((st1 = WTERMSIG(st1) & 0x7f)
+			    && st1 != SIGINT && st1 != SIGPIPE))
+				mode |= SHOW_ISSIG;
+
+		} while (ps++, --procno);
+		procno = jp->nprocs;
+	}
+
+	if (mode & SHOW_SIGNALLED && !(mode & SHOW_ISSIG)) {
+		if (jp->state == JOBDONE && !(mode & SHOW_NO_FREE)) {
+			TRACE((psh, "showjob: freeing job %d\n", jp - psh->jobtab + 1));
+			freejob(psh, jp);
+		}
+		return;
+	}
+
+	for (ps = jp->ps; --procno >= 0; ps++) {	/* for each process */
+		if (ps == jp->ps)
+			fmtstr(s, 16, "[%ld] %c ",
+				(long)(jp - psh->jobtab + 1),
+#if JOBS
+				jp == psh->jobtab + psh->curjob ? '+' :
+				psh->curjob != -1 && jp == psh->jobtab +
+					    psh->jobtab[psh->curjob].prev_job ? '-' :
+#endif
+				' ');
+		else
+			fmtstr(s, 16, "      " );
+		col = strlen(s);
+		if (mode & SHOW_PID) {
+			fmtstr(s + col, 16, "%" SHPID_PRI " ", ps->pid);
+			     col += strlen(s + col);
+		}
+		if (ps->status == -1) {
+			scopy("Running", s + col);
+		} else if (WIFEXITED(ps->status)) {
+			st = WEXITSTATUS(ps->status);
+			if (st)
+				fmtstr(s + col, 16, "Done(%d)", st);
+			else
+				fmtstr(s + col, 16, "Done");
+		} else {
+			const char *pszSigNm;
+#if JOBS
+			if (WIFSTOPPED(ps->status))
+				st = WSTOPSIG(ps->status);
+			else /* WIFSIGNALED(ps->status) */
+#endif
+				st = WTERMSIG(ps->status);
+			st &= 0x7f;
+			pszSigNm = st < NSIG ? strsignal(st) : NULL;
+			if (pszSigNm)
+				scopyn(pszSigNm, s + col, 32);
+			else
+				fmtstr(s + col, 16, "Signal %d", st);
+			if (WCOREDUMP(ps->status)) {
+				col += strlen(s + col);
+				scopyn(" (core dumped)", s + col,  64 - col);
+			}
+		}
+		col += strlen(s + col);
+		outstr(s, out);
+		do {
+			outc(' ', out);
+			col++;
+		} while (col < 30);
+		outstr(ps->cmd, out);
+		if (mode & SHOW_MULTILINE) {
+			if (procno > 0) {
+				outc(' ', out);
+				outc('|', out);
+			}
+		} else {
+			while (--procno >= 0)
+				outfmt(out, " | %s", (++ps)->cmd );
+		}
+		outc('\n', out);
+	}
+	flushout(out);
+	jp->changed = 0;
+	if (jp->state == JOBDONE && !(mode & SHOW_NO_FREE))
+		freejob(psh, jp);
+}
+
+
+int
+jobscmd(shinstance *psh, int argc, char **argv)
+{
+	int mode, m;
+	int sv = psh->jobs_invalid;
+
+	psh->jobs_invalid = 0;
+	mode = 0;
+	while ((m = nextopt(psh, "lp")))
+		if (m == 'l')
+			mode = SHOW_PID;
+		else
+			mode = SHOW_PGID;
+	if (*psh->argptr)
+		do
+			showjob(psh, psh->out1, getjob(psh, *psh->argptr,0), mode);
+		while (*++psh->argptr);
+	else
+		showjobs(psh, psh->out1, mode);
+	psh->jobs_invalid = sv;
+	return 0;
+}
+
+
+/*
+ * Print a list of jobs.  If "change" is nonzero, only print jobs whose
+ * statuses have changed since the last call to showjobs.
+ *
+ * If the shell is interrupted in the process of creating a job, the
+ * result may be a job structure containing zero processes.  Such structures
+ * will be freed here.
+ */
+
+void
+showjobs(shinstance *psh, struct output *out, int mode)
+{
+	int jobno;
+	struct job *jp;
+	int silent = 0;
+	shpid gotpid;
+
+	TRACE((psh, "showjobs(%x) called\n", mode));
+
+	/* If not even one one job changed, there is nothing to do */
+	gotpid = dowait(psh, 0, NULL);
+	while (dowait(psh, 0, NULL) > 0)
+		continue;
+#ifdef JOBS
+	/*
+	 * Check if we are not in our foreground group, and if not
+	 * put us in it.
+	 */
+	if (mflag(psh) && gotpid != -1 && sh_tcgetpgrp(psh, psh->ttyfd) != sh_getpid(psh)) {
+		if (sh_tcsetpgrp(psh, psh->ttyfd, sh_getpid(psh)) == -1)
+			error(psh, "Cannot set tty process group (%s) at %d",
+			    sh_strerror(psh, errno), __LINE__);
+		TRACE((psh, "repaired tty process group\n"));
+		silent = 1;
+	}
+#endif
+	if (psh->jobs_invalid)
+		return;
+
+	for (jobno = 1, jp = psh->jobtab ; jobno <= psh->njobs ; jobno++, jp++) {
+		if (!jp->used)
+			continue;
+		if (jp->nprocs == 0) {
+			freejob(psh, jp);
+			continue;
+		}
+		if ((mode & SHOW_CHANGED) && !jp->changed)
+			continue;
+		if (silent && jp->changed) {
+			jp->changed = 0;
+			continue;
+		}
+		showjob(psh, out, jp, mode);
+	}
+}
+
+/*
+ * Mark a job structure as unused.
+ */
+
+STATIC void
+freejob(shinstance *psh, struct job *jp)
+{
+	INTOFF;
+	if (jp->ps != &jp->ps0) {
+		ckfree(psh, jp->ps);
+		jp->ps = &jp->ps0;
+	}
+	jp->nprocs = 0;
+	jp->used = 0;
+#if JOBS
+	set_curjob(psh, jp, 0);
+#endif
+	INTON;
+}
+
+
+
+int
+waitcmd(shinstance *psh, int argc, char **argv)
+{
+	struct job *job;
+	int status, retval;
+	struct job *jp;
+
+	nextopt(psh, "");
+
+	if (!*psh->argptr) {
+		/* wait for all jobs */
+		jp = psh->jobtab;
+		if (psh->jobs_invalid)
+			return 0;
+		for (;;) {
+			if (jp >= psh->jobtab + psh->njobs) {
+				/* no running procs */
+				return 0;
+			}
+			if (!jp->used || jp->state != JOBRUNNING) {
+				jp++;
+				continue;
+			}
+			if (dowait(psh, 1, (struct job *)NULL) == -1)
+			       return 128 + SIGINT;
+			jp = psh->jobtab;
+		}
+	}
+
+	retval = 127;		/* XXXGCC: -Wuninitialized */
+	for (; *psh->argptr; psh->argptr++) {
+		job = getjob(psh, *psh->argptr, 1);
+		if (!job) {
+			retval = 127;
+			continue;
+		}
+		/* loop until process terminated or stopped */
+		while (job->state == JOBRUNNING) {
+			if (dowait(psh, 1, (struct job *)NULL) == -1)
+			       return 128 + SIGINT;
+		}
+		status = job->ps[job->nprocs].status;
+		if (WIFEXITED(status))
+			retval = WEXITSTATUS(status);
+#if JOBS
+		else if (WIFSTOPPED(status))
+			retval = WSTOPSIG(status) + 128;
+#endif
+		else {
+			/* XXX: limits number of signals */
+			retval = WTERMSIG(status) + 128;
+		}
+		if (!iflag(psh))
+			freejob(psh, job);
+	}
+	return retval;
+}
+
+
+
+int
+jobidcmd(shinstance *psh, int argc, char **argv)
+{
+	struct job *jp;
+	int i;
+
+	nextopt(psh, "");
+	jp = getjob(psh, *psh->argptr, 0);
+	for (i = 0 ; i < jp->nprocs ; ) {
+		out1fmt(psh, "%" SHPID_PRI, jp->ps[i].pid);
+		out1c(psh, ++i < jp->nprocs ? ' ' : '\n');
+	}
+	return 0;
+}
+
+shpid
+getjobpgrp(shinstance *psh, const char *name)
+{
+	struct job *jp;
+
+	jp = getjob(psh, name, 1);
+	if (jp == 0)
+		return 0;
+	return -jp->ps[0].pid;
+}
+
+/*
+ * Convert a job name to a job structure.
+ */
+
+STATIC struct job *
+getjob(shinstance *psh, const char *name, int noerror)
+{
+	int jobno = -1;
+	struct job *jp;
+	int pid;
+	int i;
+	const char *err_msg = "No such job: %s";
+
+	if (name == NULL) {
+#if JOBS
+		jobno = psh->curjob;
+#endif
+		err_msg = "No current job";
+	} else if (name[0] == '%') {
+		if (is_number(name + 1)) {
+			jobno = number(psh, name + 1) - 1;
+		} else if (!name[2]) {
+			switch (name[1]) {
+#if JOBS
+			case 0:
+			case '+':
+			case '%':
+				jobno = psh->curjob;
+				err_msg = "No current job";
+				break;
+			case '-':
+				jobno = psh->curjob;
+				if (jobno != -1)
+					jobno = psh->jobtab[jobno].prev_job;
+				err_msg = "No previous job";
+				break;
+#endif
+			default:
+				goto check_pattern;
+			}
+		} else {
+			struct job *found;
+    check_pattern:
+			found = NULL;
+			for (jp = psh->jobtab, i = psh->njobs ; --i >= 0 ; jp++) {
+				if (!jp->used || jp->nprocs <= 0)
+					continue;
+				if ((name[1] == '?'
+					&& strstr(jp->ps[0].cmd, name + 2))
+				    || prefix(name + 1, jp->ps[0].cmd)) {
+					if (found) {
+						err_msg = "%s: ambiguous";
+						found = 0;
+						break;
+					}
+					found = jp;
+				}
+			}
+			if (found)
+				return found;
+		}
+
+	} else if (is_number(name)) {
+		pid = number(psh, name);
+		for (jp = psh->jobtab, i = psh->njobs ; --i >= 0 ; jp++) {
+			if (jp->used && jp->nprocs > 0
+			 && jp->ps[jp->nprocs - 1].pid == pid)
+				return jp;
+		}
+	}
+
+	if (!psh->jobs_invalid && jobno >= 0 && jobno < psh->njobs) {
+		jp = psh->jobtab + jobno;
+		if (jp->used)
+			return jp;
+	}
+	if (!noerror)
+		error(psh, err_msg, name);
+	return 0;
+}
+
+
+
+/*
+ * Return a new job structure,
+ */
+
+struct job *
+makejob(shinstance *psh, union node *node, int nprocs)
+{
+	int i;
+	struct job *jp;
+
+	if (psh->jobs_invalid) {
+		for (i = psh->njobs, jp = psh->jobtab ; --i >= 0 ; jp++) {
+			if (jp->used)
+				freejob(psh, jp);
+		}
+		psh->jobs_invalid = 0;
+	}
+
+	for (i = psh->njobs, jp = psh->jobtab ; ; jp++) {
+		if (--i < 0) {
+			INTOFF;
+			if (psh->njobs == 0) {
+				psh->jobtab = ckmalloc(psh, 4 * sizeof psh->jobtab[0]);
+			} else {
+				jp = ckmalloc(psh, (psh->njobs + 4) * sizeof psh->jobtab[0]);
+				memcpy(jp, psh->jobtab, psh->njobs * sizeof jp[0]);
+				/* Relocate `ps' pointers */
+				for (i = 0; i < psh->njobs; i++)
+					if (jp[i].ps == &psh->jobtab[i].ps0)
+						jp[i].ps = &jp[i].ps0;
+				ckfree(psh, psh->jobtab);
+				psh->jobtab = jp;
+			}
+			jp = psh->jobtab + psh->njobs;
+			for (i = 4 ; --i >= 0 ; psh->jobtab[psh->njobs++].used = 0) { /*empty*/ }
+			INTON;
+			break;
+		}
+		if (jp->used == 0)
+			break;
+	}
+	INTOFF;
+	jp->state = JOBRUNNING;
+	jp->used = 1;
+	jp->changed = 0;
+	jp->nprocs = 0;
+#if JOBS
+	jp->jobctl = psh->jobctl;
+	set_curjob(psh, jp, 1);
+#endif
+	if (nprocs > 1) {
+		jp->ps = ckmalloc(psh, nprocs * sizeof (struct procstat));
+	} else {
+		jp->ps = &jp->ps0;
+	}
+	INTON;
+	TRACE((psh, "makejob(0x%lx, %d) returns %%%d\n", (long)node, nprocs,
+	       jp - psh->jobtab + 1));
+	return jp;
+}
+
+
+/*
+ * Fork off a subshell.  If we are doing job control, give the subshell its
+ * own process group.  Jp is a job structure that the job is to be added to.
+ * N is the command that will be evaluated by the child.  Both jp and n may
+ * be NULL.  The mode parameter can be one of the following:
+ *	FORK_FG - Fork off a foreground process.
+ *	FORK_BG - Fork off a background process.
+ *	FORK_NOJOB - Like FORK_FG, but don't give the process its own
+ *		     process group even if job control is on.
+ *
+ * When job control is turned off, background processes have their standard
+ * input redirected to /dev/null (except for the second and later processes
+ * in a pipeline).
+ */
+
+#ifndef KASH_USE_FORKSHELL2
+shpid
+forkshell(shinstance *psh, struct job *jp, union node *n, int mode)
+{
+	int pid;
+
+	TRACE((psh, "forkshell(%%%d, %p, %d) called\n", jp - psh->jobtab, n, mode));
+	switch ((pid = sh_fork(psh))) {
+	case -1:
+		TRACE((psh, "Fork failed, errno=%d\n", errno));
+		INTON;
+		error(psh, "Cannot fork");
+		return -1; /* won't get here */
+	case 0:
+		forkchild(psh, jp == NULL || jp->nprocs == 0 ? -1 : jp->ps[0].pid, n, mode);
+		return 0;
+	default:
+		return forkparent(psh, jp, n, mode, pid);
+	}
+}
+#else /* KASH_USE_FORKSHELL2 */
+shpid
+forkshell2(shinstance *psh, struct job *jp, union node *n, int mode,
+	       int (*child)(struct shinstance *, void *, union node *),
+	       union node *nchild, void *argp, size_t arglen,
+	       void (*setupchild)(struct shinstance *, struct shinstance *, void *))
+{
+	shpid pid;
+
+# ifdef SH_FORKED_MODE
+	/*
+	 * fork variant.
+	 */
+	pid = sh_fork(psh);
+	if (pid == 0)
+	{
+		/* child */
+		forkchild(psh, jp == NULL || jp->nprocs == 0 ? -1 : jp->ps[0].pid, n, mode);
+		sh__exit(psh, child(psh, nchild, argp));
+		return 0;
+	}
+
+	/* parent */
+	if (pid != -1)
+		return forkparent(psh, jp, n, mode, pid);
+	TRACE((psh, "Fork failed, errno=%d\n", errno));
+	INTON;
+	(void)arglen;
+	(void)setupchild;
+	error(psh, "Cannot fork");
+	return -1; /* won't get here */
+
+# else
+	/*
+	 * Clone the shell and start a thread to service the subshell.
+	 */
+	struct shinstance *pshchild;
+
+	TRACE((psh, "forkshell2(%%%d, %p, %d, %p, %p, %p, %d) called\n",
+		   jp - psh->jobtab, n, mode, child, nchild, argp, (int)arglen));
+
+	pshchild = sh_create_child_shell(psh);
+	if (pshchild) {
+		/* pack arguments */
+		struct forkshell2args *args = (struct forkshell2args *)sh_calloc(pshchild, sizeof(*args) + arglen, 1);
+		args->psh = pshchild;
+		args->argp = memcpy(args + 1, argp, arglen);
+		args->child = child;
+		args->mode = mode;
+		args->pgrp = jp == NULL || jp->nprocs == 0 ? -1 : jp->ps[0].pid;
+		setstackmark(pshchild, &args->smark);
+		args->n = copyparsetree(pshchild, n);
+		if (setupchild)
+			setupchild(pshchild, psh, args->argp);
+
+		/* start the thread */
+		pid = sh_thread_start(psh, pshchild, forkshell2_thread, args);
+		if (pid >= 0)
+			return forkparent(psh, jp, n, mode, pid);
+		error(psh, "sh_start_child_thread failed (%d)!", (int)pid);
+	}
+	else
+		error(psh, "sh_create_child_shell failed!");
+	return -1;
+# endif
+}
+#endif
+
+STATIC shpid
+forkparent(shinstance *psh, struct job *jp, union node *n, int mode, shpid pid)
+{
+	shpid pgrp;
+
+	if (psh->rootshell && mode != FORK_NOJOB && mflag(psh)) {
+		if (jp == NULL || jp->nprocs == 0)
+			pgrp = pid;
+		else
+			pgrp = jp->ps[0].pid;
+		/* This can fail because we are doing it in the child also */
+		(void)sh_setpgid(psh, pid, pgrp);
+	}
+	if (mode == FORK_BG)
+		psh->backgndpid = pid;		/* set $! */
+	if (jp) {
+		struct procstat *ps = &jp->ps[jp->nprocs++];
+		ps->pid = pid;
+		ps->status = -1;
+		ps->cmd[0] = 0;
+		if (/* iflag && rootshell && */ n)
+			commandtext(psh, ps, n);
+	}
+	TRACE((psh, "In parent shell:  child = %" SHPID_PRI "\n", pid));
+	return pid;
+}
+
+STATIC void
+forkchild(shinstance *psh, shpid pgrp, union node *n, int mode)
+{
+	int wasroot;
+	const char *devnull = _PATH_DEVNULL;
+	const char *nullerr = "Can't open %s";
+
+	wasroot = psh->rootshell;
+	TRACE((psh, "Child shell %" SHPID_PRI "\n", sh_getpid(psh)));
+	psh->rootshell = 0;
+
+	closescript(psh);
+	clear_traps(psh);
+#if JOBS
+	psh->jobctl = 0;		/* do job control only in root shell */
+	if (wasroot && mode != FORK_NOJOB && mflag(psh)) {
+		if (pgrp == -1)
+			pgrp = sh_getpid(psh);
+		/* This can fail because we are doing it in the parent also.
+                   And we must ignore SIGTTOU at this point or we'll be stopped! */
+		(void)sh_setpgid(psh, 0, pgrp);
+		if (mode == FORK_FG) {
+			if (sh_tcsetpgrp(psh, psh->ttyfd, pgrp) == -1)
+				error(psh, "Cannot set tty process group (%s) at %d",
+				    sh_strerror(psh, errno), __LINE__);
+		}
+		setsignal(psh, SIGTSTP);
+		setsignal(psh, SIGTTOU);
+	} else
+#endif
+	if (mode == FORK_BG) {
+		ignoresig(psh, SIGINT);
+		ignoresig(psh, SIGQUIT);
+		if (pgrp == -1 && ! fd0_redirected_p(psh)) {
+			shfile_close(&psh->fdtab, 0);
+			if (shfile_open(&psh->fdtab, devnull, O_RDONLY, 0) != 0)
+				error(psh, nullerr, devnull);
+		}
+	}
+	if (wasroot && iflag(psh)) {
+		setsignal(psh, SIGINT);
+		setsignal(psh, SIGQUIT);
+		setsignal(psh, SIGTERM);
+	}
+
+	psh->jobs_invalid = 1;
+}
+
+#if defined(KASH_USE_FORKSHELL2) && !defined(SH_FORKED_MODE)
+/** thread procedure */
+static int forkshell2_thread(shinstance *psh, void *argp)
+{
+	struct forkshell2args * volatile volargs = (struct forkshell2args *)argp;
+	struct jmploc jmp;
+	TRACE2((psh, "forkshell2_thread:\n"));
+
+	if (setjmp(jmp.loc) == 0) {
+		struct forkshell2args * const args = volargs;
+
+		forkchild(psh, args->pgrp, args->n, args->mode);
+
+		psh->handler = &jmp;
+		return args->child(psh, args->n, args->argp);
+	}
+
+	/*
+	 * (We longjmp'ed here.)
+	 *
+	 * This is copied from main() and simplified:
+	 */
+	for (;;) {
+		psh = volargs->psh; /* longjmp paranoia */
+
+		if (psh->exception != EXSHELLPROC) {
+			if (psh->exception == EXEXEC)
+				psh->exitstatus = psh->exerrno;
+			else if (psh->exception == EXERROR)
+				psh->exitstatus = 2;
+			TRACE2((psh, "forkshell2_thread: exception=%d -> exitshell2(,%d)\n", psh->exception, psh->exitstatus));
+			return exitshell2(psh, psh->exitstatus);
+		}
+
+		/* EXSHELLPROC - tryexec gets us here and it wants to run a program
+		   hoping (?) it's a shell script.  We must reset the shell state and
+		   turn ourselves into a root shell before doing so. */
+		TRACE2((psh, "forkshell2_thread: exception=EXSHELLPROC\n"));
+		psh->rootpid = /*getpid()*/ psh->pid;
+		psh->rootshell = 1;
+		psh->minusc = NULL;
+
+		reset(psh);
+		popstackmark(psh, &volargs->smark);
+
+		FORCEINTON;				/* enable interrupts */
+
+		/* state3: */
+		if (sflag(psh) == 0) {
+# ifdef SIGTSTP
+			static int sigs[] =  { SIGINT, SIGQUIT, SIGHUP, SIGPIPE, SIGTSTP };
+# else
+			static int sigs[] =  { SIGINT, SIGQUIT, SIGHUP, SIGPIPE };
+# endif
+			unsigned i;
+			for (i = 0; i < K_ELEMENTS(sigs); i++)
+				setsignal(psh, sigs[i]);
+		}
+
+		if (setjmp(jmp.loc) == 0) {
+			psh->handler = &jmp;
+			cmdloop(psh, 1);
+			TRACE2((psh, "forkshell2_thread: cmdloop returned -> exitshell2(,%d)\n", psh->exitstatus));
+			return exitshell2(psh, psh->exitstatus);
+		}
+	}
+}
+#endif
+
+
+/*
+ * Wait for job to finish.
+ *
+ * Under job control we have the problem that while a child process is
+ * running interrupts generated by the user are sent to the child but not
+ * to the shell.  This means that an infinite loop started by an inter-
+ * active user may be hard to kill.  With job control turned off, an
+ * interactive user may place an interactive program inside a loop.  If
+ * the interactive program catches interrupts, the user doesn't want
+ * these interrupts to also abort the loop.  The approach we take here
+ * is to have the shell ignore interrupt signals while waiting for a
+ * forground process to terminate, and then send itself an interrupt
+ * signal if the child process was terminated by an interrupt signal.
+ * Unfortunately, some programs want to do a bit of cleanup and then
+ * exit on interrupt; unless these processes terminate themselves by
+ * sending a signal to themselves (instead of calling exit) they will
+ * confuse this approach.
+ */
+
+int
+waitforjob(shinstance *psh, struct job *jp)
+{
+#if JOBS
+	shpid mypgrp = sh_getpgrp(psh);
+#endif
+	int status;
+	int st;
+
+	INTOFF;
+	TRACE((psh, "waitforjob(%%%d) called\n", jp - psh->jobtab + 1));
+	while (jp->state == JOBRUNNING) {
+		dowait(psh, 1, jp);
+	}
+#if JOBS
+	if (jp->jobctl) {
+		if (sh_tcsetpgrp(psh, psh->ttyfd, mypgrp) == -1)
+			error(psh, "Cannot set tty process group (%s) at %d",
+			    sh_strerror(psh, errno), __LINE__);
+	}
+	if (jp->state == JOBSTOPPED && psh->curjob != jp - psh->jobtab)
+		set_curjob(psh, jp, 2);
+#endif
+	status = jp->ps[jp->nprocs - 1].status;
+	/* convert to 8 bits */
+	if (WIFEXITED(status))
+		st = WEXITSTATUS(status);
+#if JOBS
+	else if (WIFSTOPPED(status))
+		st = WSTOPSIG(status) + 128;
+#endif
+	else
+		st = WTERMSIG(status) + 128;
+	TRACE((psh, "waitforjob: job %d, nproc %d, status %x, st %x\n",
+		jp - psh->jobtab + 1, jp->nprocs, status, st ));
+#if JOBS
+	if (jp->jobctl) {
+		/*
+		 * This is truly gross.
+		 * If we're doing job control, then we did a TIOCSPGRP which
+		 * caused us (the shell) to no longer be in the controlling
+		 * session -- so we wouldn't have seen any ^C/SIGINT.  So, we
+		 * intuit from the subprocess exit status whether a SIGINT
+		 * occurred, and if so interrupt ourselves.  Yuck.  - mycroft
+		 */
+		if (WIFSIGNALED(status) && WTERMSIG(status) == SIGINT)
+			sh_raise_sigint(psh);/*raise(SIGINT);*/
+	}
+#endif
+	if (! JOBS || jp->state == JOBDONE)
+		freejob(psh, jp);
+	INTON;
+	return st;
+}
+
+
+
+/*
+ * Wait for a process to terminate.
+ */
+
+STATIC shpid
+dowait(shinstance *psh, int block, struct job *job)
+{
+	shpid pid;
+	int status;
+	struct procstat *sp;
+	struct job *jp;
+	struct job *thisjob;
+	int done;
+	int stopped;
+
+	TRACE((psh, "dowait(%d) called\n", block));
+	do {
+		pid = waitproc(psh, block, job, &status);
+		TRACE((psh, "wait returns pid %" SHPID_PRI ", status %d\n", pid, status));
+	} while (pid == -1 && errno == EINTR && psh->gotsig[SIGINT - 1] == 0);
+	if (pid <= 0)
+		return pid;
+	INTOFF;
+	thisjob = NULL;
+	for (jp = psh->jobtab ; jp < psh->jobtab + psh->njobs ; jp++) {
+		if (jp->used) {
+			done = 1;
+			stopped = 1;
+			for (sp = jp->ps ; sp < jp->ps + jp->nprocs ; sp++) {
+				if (sp->pid == -1)
+					continue;
+				if (sp->pid == pid) {
+					TRACE((psh, "Job %d: changing status of proc %" SHPID_PRI " from 0x%x to 0x%x\n",
+						   jp - psh->jobtab + 1, pid, sp->status, status));
+					sp->status = status;
+					thisjob = jp;
+				}
+				if (sp->status == -1)
+					stopped = 0;
+				else if (WIFSTOPPED(sp->status))
+					done = 0;
+			}
+			if (stopped) {		/* stopped or done */
+				int state = done ? JOBDONE : JOBSTOPPED;
+				if (jp->state != state) {
+					TRACE((psh, "Job %d: changing state from %d to %d\n", jp - psh->jobtab + 1, jp->state, state));
+					jp->state = state;
+#if JOBS
+					if (done)
+						set_curjob(psh, jp, 0);
+#endif
+				}
+			}
+		}
+	}
+
+	if (thisjob && thisjob->state != JOBRUNNING) {
+		int mode = 0;
+		if (!psh->rootshell || !iflag(psh))
+			mode = SHOW_SIGNALLED;
+		if (job == thisjob)
+			mode = SHOW_SIGNALLED | SHOW_NO_FREE;
+		if (mode)
+			showjob(psh, psh->out2, thisjob, mode);
+		else {
+			TRACE((psh, "Not printing status, rootshell=%d, job=%p\n",
+				psh->rootshell, job));
+			thisjob->changed = 1;
+		}
+	}
+
+	INTON;
+	return pid;
+}
+
+
+
+/*
+ * Do a wait system call.  If job control is compiled in, we accept
+ * stopped processes.  If block is zero, we return a value of zero
+ * rather than blocking.
+ */
+STATIC shpid
+waitproc(shinstance *psh, int block, struct job *jp, int *status)
+{
+	int flags = 0;
+
+#if JOBS
+	if (jp != NULL && jp->jobctl)
+		flags |= WUNTRACED;
+#endif
+	if (block == 0)
+		flags |= WNOHANG;
+	return sh_waitpid(psh, -1, status, flags);
+}
+
+/*
+ * return 1 if there are stopped jobs, otherwise 0
+ */
+//int job_warning = 0;
+int
+stoppedjobs(shinstance *psh)
+{
+	int jobno;
+	struct job *jp;
+
+	if (psh->job_warning || psh->jobs_invalid)
+		return (0);
+	for (jobno = 1, jp = psh->jobtab; jobno <= psh->njobs; jobno++, jp++) {
+		if (jp->used == 0)
+			continue;
+		if (jp->state == JOBSTOPPED) {
+			out2str(psh, "You have stopped jobs.\n");
+			psh->job_warning = 2;
+			return (1);
+		}
+	}
+
+	return (0);
+}
+
+/*
+ * Return a string identifying a command (to be printed by the
+ * jobs command).
+ */
+
+//STATIC char *cmdnextc;
+//STATIC int cmdnleft;
+
+void
+commandtext(shinstance *psh, struct procstat *ps, union node *n)
+{
+	int len;
+
+	psh->cmdnextc = ps->cmd;
+	if (iflag(psh) || mflag(psh) || sizeof(ps->cmd) < 100)
+		len = sizeof(ps->cmd);
+	else
+		len = sizeof(ps->cmd) / 10;
+	psh->cmdnleft = len;
+	cmdtxt(psh, n);
+	if (psh->cmdnleft <= 0) {
+		char *p = ps->cmd + len - 4;
+		p[0] = '.';
+		p[1] = '.';
+		p[2] = '.';
+		p[3] = 0;
+	} else
+		*psh->cmdnextc = '\0';
+	TRACE((psh, "commandtext: ps->cmd %x, end %x, left %d\n\t\"%s\"\n",
+		ps->cmd, psh->cmdnextc, psh->cmdnleft, ps->cmd));
+}
+
+
+STATIC void
+cmdtxt(shinstance *psh, union node *n)
+{
+	union node *np;
+	struct nodelist *lp;
+	const char *p;
+	int i;
+	char s[2];
+
+	if (n == NULL || psh->cmdnleft <= 0)
+		return;
+	switch (n->type) {
+	case NSEMI:
+		cmdtxt(psh, n->nbinary.ch1);
+		cmdputs(psh, "; ");
+		cmdtxt(psh, n->nbinary.ch2);
+		break;
+	case NAND:
+		cmdtxt(psh, n->nbinary.ch1);
+		cmdputs(psh, " && ");
+		cmdtxt(psh, n->nbinary.ch2);
+		break;
+	case NOR:
+		cmdtxt(psh, n->nbinary.ch1);
+		cmdputs(psh, " || ");
+		cmdtxt(psh, n->nbinary.ch2);
+		break;
+	case NPIPE:
+		for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) {
+			cmdtxt(psh, lp->n);
+			if (lp->next)
+				cmdputs(psh, " | ");
+		}
+		break;
+	case NSUBSHELL:
+		cmdputs(psh, "(");
+		cmdtxt(psh, n->nredir.n);
+		cmdputs(psh, ")");
+		break;
+	case NREDIR:
+	case NBACKGND:
+		cmdtxt(psh, n->nredir.n);
+		break;
+	case NIF:
+		cmdputs(psh, "if ");
+		cmdtxt(psh, n->nif.test);
+		cmdputs(psh, "; then ");
+		cmdtxt(psh, n->nif.ifpart);
+		if (n->nif.elsepart) {
+			cmdputs(psh, "; else ");
+			cmdtxt(psh, n->nif.elsepart);
+		}
+		cmdputs(psh, "; fi");
+		break;
+	case NWHILE:
+		cmdputs(psh, "while ");
+		goto until;
+	case NUNTIL:
+		cmdputs(psh, "until ");
+until:
+		cmdtxt(psh, n->nbinary.ch1);
+		cmdputs(psh, "; do ");
+		cmdtxt(psh, n->nbinary.ch2);
+		cmdputs(psh, "; done");
+		break;
+	case NFOR:
+		cmdputs(psh, "for ");
+		cmdputs(psh, n->nfor.var);
+		cmdputs(psh, " in ");
+		cmdlist(psh, n->nfor.args, 1);
+		cmdputs(psh, "; do ");
+		cmdtxt(psh, n->nfor.body);
+		cmdputs(psh, "; done");
+		break;
+	case NCASE:
+		cmdputs(psh, "case ");
+		cmdputs(psh, n->ncase.expr->narg.text);
+		cmdputs(psh, " in ");
+		for (np = n->ncase.cases; np; np = np->nclist.next) {
+			cmdtxt(psh, np->nclist.pattern);
+			cmdputs(psh, ") ");
+			cmdtxt(psh, np->nclist.body);
+			cmdputs(psh, ";; ");
+		}
+		cmdputs(psh, "esac");
+		break;
+	case NDEFUN:
+		cmdputs(psh, n->narg.text);
+		cmdputs(psh, "() { ... }");
+		break;
+	case NCMD:
+		cmdlist(psh, n->ncmd.args, 1);
+		cmdredirlist(psh, n->ncmd.redirect, 0);
+		break;
+	case NARG:
+		cmdputs(psh, n->narg.text);
+		break;
+	case NTO:
+		p = ">";  i = 1;  goto redir;
+	case NCLOBBER:
+		p = ">|";  i = 1;  goto redir;
+	case NAPPEND:
+		p = ">>";  i = 1;  goto redir;
+	case NTOFD:
+		p = ">&";  i = 1;  goto redir;
+	case NFROM:
+		p = "<";  i = 0;  goto redir;
+	case NFROMFD:
+		p = "<&";  i = 0;  goto redir;
+	case NFROMTO:
+		p = "<>";  i = 0;  goto redir;
+redir:
+		if (n->nfile.fd != i) {
+			s[0] = n->nfile.fd + '0';
+			s[1] = '\0';
+			cmdputs(psh, s);
+		}
+		cmdputs(psh, p);
+		if (n->type == NTOFD || n->type == NFROMFD) {
+			s[0] = n->ndup.dupfd + '0';
+			s[1] = '\0';
+			cmdputs(psh, s);
+		} else {
+			cmdtxt(psh, n->nfile.fname);
+		}
+		break;
+	case NHERE:
+	case NXHERE:
+		cmdputs(psh, "<<...");
+		break;
+	default:
+		cmdputs(psh, "???");
+		break;
+	}
+}
+
+STATIC void
+cmdlist(shinstance *psh, union node *np, int sep)
+{
+	for (; np; np = np->narg.next) {
+		if (!sep)
+			cmdputs(psh, " ");
+		cmdtxt(psh, np);
+		if (sep && np->narg.next)
+			cmdputs(psh, " ");
+	}
+}
+
+STATIC void
+cmdredirlist(shinstance *psh, union node *np, int sep)
+{
+	for (; np; np = np->nfile.next) {
+		if (!sep)
+			cmdputs(psh, " ");
+		cmdtxt(psh, np);
+		if (sep && np->nfile.next)
+			cmdputs(psh, " ");
+	}
+}
+
+
+STATIC void
+cmdputs(shinstance *psh, const char *s)
+{
+	const char *p, *str = 0;
+	char c, cc[2] = " ";
+	char *nextc;
+	int nleft;
+	int subtype = 0;
+	int quoted = 0;
+	static char vstype[16][4] = { "", "}", "-", "+", "?", "=",
+					"#", "##", "%", "%%" };
+
+	p = s;
+	nextc = psh->cmdnextc;
+	nleft = psh->cmdnleft;
+	while (nleft > 0 && (c = *p++) != 0) {
+		switch (c) {
+		case CTLESC:
+			c = *p++;
+			break;
+		case CTLVAR:
+			subtype = *p++;
+			if ((subtype & VSTYPE) == VSLENGTH)
+				str = "${#";
+			else
+				str = "${";
+			if (!(subtype & VSQUOTE) != !(quoted & 1)) {
+				quoted ^= 1;
+				c = '"';
+			} else
+				c = *str++;
+			break;
+		case CTLENDVAR:
+			if (quoted & 1) {
+				c = '"';
+				str = "}";
+			} else
+				c = '}';
+			quoted >>= 1;
+			subtype = 0;
+			break;
+		case CTLBACKQ:
+			c = '$';
+			str = "(...)";
+			break;
+		case CTLBACKQ+CTLQUOTE:
+			c = '"';
+			str = "$(...)\"";
+			break;
+		case CTLARI:
+			c = '$';
+			str = "((";
+			break;
+		case CTLENDARI:
+			c = ')';
+			str = ")";
+			break;
+		case CTLQUOTEMARK:
+			quoted ^= 1;
+			c = '"';
+			break;
+		case '=':
+			if (subtype == 0)
+				break;
+			str = vstype[subtype & VSTYPE];
+			if (subtype & VSNUL)
+				c = ':';
+			else
+				c = *str++;
+			if (c != '}')
+				quoted <<= 1;
+			break;
+		case '\'':
+		case '\\':
+		case '"':
+		case '$':
+			/* These can only happen inside quotes */
+			cc[0] = c;
+			str = cc;
+			c = '\\';
+			break;
+		default:
+			break;
+		}
+		do {
+			*nextc++ = c;
+		} while (--nleft > 0 && str && (c = *str++));
+		str = 0;
+	}
+	if ((quoted & 1) && nleft) {
+		*nextc++ = '"';
+		nleft--;
+	}
+	psh->cmdnleft = nleft;
+	psh->cmdnextc = nextc;
+}
diff --git a/src/kash/jobs.h b/src/kash/jobs.h
new file mode 100644
index 0000000..d1236b3
--- /dev/null
+++ b/src/kash/jobs.h
@@ -0,0 +1,114 @@
+/*	$NetBSD: jobs.h,v 1.19 2003/11/27 21:16:14 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)jobs.h	8.2 (Berkeley) 5/4/95
+ */
+
+#include "output.h"
+
+/* Mode argument to forkshell.  Don't change FORK_FG or FORK_BG. */
+#define FORK_FG 0
+#define FORK_BG 1
+#define FORK_NOJOB 2
+
+#define FORK_JUST_IO 4          /* forking I/O subprocess/thread (here doc). */
+
+/* mode flags for showjob(s) */
+#define	SHOW_PGID	0x01	/* only show pgid - for jobs -p */
+#define	SHOW_MULTILINE	0x02	/* one line per process */
+#define	SHOW_PID	0x04	/* include process pid */
+#define	SHOW_CHANGED	0x08	/* only jobs whose state has changed */
+#define	SHOW_SIGNALLED	0x10	/* only if stopped/exited on signal */
+#define	SHOW_ISSIG	0x20	/* job was signalled */
+#define	SHOW_NO_FREE	0x40	/* do not free job */
+
+
+/*
+ * A job structure contains information about a job.  A job is either a
+ * single process or a set of processes contained in a pipeline.  In the
+ * latter case, pidlist will be non-NULL, and will point to a -1 terminated
+ * array of pids.
+ */
+#define	MAXCMDTEXT	200
+
+struct procstat {
+	shpid	pid;		/* process id */
+ 	int	status;		/* last process status from wait() */
+ 	char	cmd[MAXCMDTEXT];/* text of command being run */
+};
+
+struct job {
+	struct procstat ps0;	/* status of process */
+	struct procstat *ps;	/* status or processes when more than one */
+	int	nprocs;		/* number of processes */
+	shpid	pgrp;		/* process group of this job */ /**< @todo is job:pgrp used anywhere? */
+	char	state;
+#define	JOBRUNNING	0	/* at least one proc running */
+#define	JOBSTOPPED	1	/* all procs are stopped */
+#define	JOBDONE		2	/* all procs are completed */
+	char	used;		/* true if this entry is in used */
+	char	changed;	/* true if status has changed */
+#if JOBS
+	char 	jobctl;		/* job running under job control */
+	int	prev_job;	/* previous job index */
+#endif
+};
+
+/*extern pid_t backgndpid;*/	/* pid of last background process */
+/*extern int job_warning;*/		/* user was warned about stopped jobs */
+
+void setjobctl(struct shinstance *, int);
+int fgcmd(struct shinstance *, int, char **);
+int bgcmd(struct shinstance *, int, char **);
+int jobscmd(struct shinstance *, int, char **);
+void showjobs(struct shinstance *, struct output *, int);
+int waitcmd(struct shinstance *, int, char **);
+int jobidcmd(struct shinstance *, int, char **);
+union node;
+struct job *makejob(struct shinstance *, union node *, int);
+#ifdef KASH_USE_FORKSHELL2
+shpid forkshell2(struct shinstance *, struct job *, union node *, int,
+                 int (*child)(struct shinstance *, void *, union node *),
+                 union node *, void *, size_t,
+                 void (*setupchild)(struct shinstance *, struct shinstance *, void *));
+#else
+shpid forkshell(struct shinstance *, struct job *, union node *, int);
+#endif
+int waitforjob(struct shinstance *, struct job *);
+int stoppedjobs(struct shinstance *);
+void commandtext(struct shinstance *, struct procstat *, union node *);
+shpid getjobpgrp(struct shinstance *, const char *);
+
+#if ! JOBS
+#define setjobctl(psh, on)	/* do nothing */
+#endif
diff --git a/src/kash/machdep.h b/src/kash/machdep.h
new file mode 100644
index 0000000..c61e7be
--- /dev/null
+++ b/src/kash/machdep.h
@@ -0,0 +1,56 @@
+/*	$NetBSD: machdep.h,v 1.11 2003/08/07 09:05:33 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)machdep.h	8.2 (Berkeley) 5/4/95
+ */
+
+/*
+ * Most machines require the value returned from malloc to be aligned
+ * in some way.  The following macro will get this right on many machines.
+ */
+
+/* For the purposes of the allocation stack(s), this is nonsensical given
+   that struct stack_block does not align the 'space' member accordingly.
+   That member will be aligned according to the pointer size, so we
+   should do the same here and not mix in any 'double' nonsense: */
+#if 0
+#define SHELL_SIZE (sizeof(union {int i; char *cp; double d; }) - 1)
+#else
+#define SHELL_SIZE (sizeof(void *) - 1)
+#endif
+
+/*
+ * It appears that grabstackstr() will barf with such alignments
+ * because stalloc() will return a string allocated in a new stackblock.
+ */
+#define SHELL_ALIGN(nbytes) (((nbytes) + SHELL_SIZE) & ~SHELL_SIZE)
diff --git a/src/kash/mail.c b/src/kash/mail.c
new file mode 100644
index 0000000..4a50b38
--- /dev/null
+++ b/src/kash/mail.c
@@ -0,0 +1,119 @@
+/*	$NetBSD: mail.c,v 1.16 2003/08/07 09:05:33 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)mail.c	8.2 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: mail.c,v 1.16 2003/08/07 09:05:33 agc Exp $");
+#endif /* not lint */
+#endif
+
+/*
+ * Routines to check for mail.  (Perhaps make part of main.c?)
+ */
+#include <sys/types.h>
+#include <stdlib.h>
+
+#include "shell.h"
+#include "exec.h"	/* defines padvance() */
+#include "var.h"
+#include "output.h"
+#include "memalloc.h"
+#include "error.h"
+#include "mail.h"
+#include "shinstance.h"
+
+
+/*#define MAXMBOXES 10*/
+
+
+/*STATIC int nmboxes;*/			/* number of mailboxes */
+/*STATIC time_t mailtime[MAXMBOXES];*/	/* times of mailboxes */
+
+
+
+/*
+ * Print appropriate message(s) if mail has arrived.  If the argument is
+ * nozero, then the value of MAIL has changed, so we just update the
+ * values.
+ */
+
+void
+chkmail(shinstance *psh, int silent)
+{
+	int i;
+	const char *mpath;
+	char *p;
+	char *q;
+	struct stackmark smark;
+	struct stat statb;
+
+	if (silent)
+		psh->nmboxes = 10;
+	if (psh->nmboxes == 0)
+		return;
+	setstackmark(psh, &smark);
+	mpath = mpathset(psh) ? mpathval(psh) : mailval(psh);
+	for (i = 0 ; i < psh->nmboxes ; i++) {
+		p = padvance(psh, &mpath, nullstr);
+		if (p == NULL)
+			break;
+		if (*p == '\0')
+			continue;
+		for (q = p ; *q ; q++);
+		if (q[-1] != '/')
+			sh_abort(psh);
+		q[-1] = '\0';			/* delete trailing '/' */
+#ifdef notdef /* this is what the System V shell claims to do (it lies) */
+		if (shfile_stat(&psh->fdtab, p, &statb) < 0)
+			statb.st_mtime = 0;
+		if (statb.st_mtime > psh->mailtime[i] && ! silent) {
+			out2str(psh, psh->pathopt ? psh->pathopt : "you have mail");
+			out2c(psh, '\n');
+		}
+		psh->mailtime[i] = statb.st_mtime;
+#else /* this is what it should do */
+		if (shfile_stat(&psh->fdtab, p, &statb) < 0)
+			statb.st_size = 0;
+		if (statb.st_size > psh->mailtime[i] && ! silent) {
+			out2str(psh, psh->pathopt ? psh->pathopt : "you have mail");
+			out2c(psh, '\n');
+		}
+		psh->mailtime[i] = statb.st_size;
+#endif
+	}
+	psh->nmboxes = i;
+	popstackmark(psh, &smark);
+}
diff --git a/src/kash/mail.h b/src/kash/mail.h
new file mode 100644
index 0000000..78c9c5e
--- /dev/null
+++ b/src/kash/mail.h
@@ -0,0 +1,37 @@
+/*	$NetBSD: mail.h,v 1.10 2003/08/07 09:05:34 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)mail.h	8.2 (Berkeley) 5/4/95
+ */
+
+void chkmail(struct shinstance *, int);
diff --git a/src/kash/main.c b/src/kash/main.c
new file mode 100644
index 0000000..4e0517f
--- /dev/null
+++ b/src/kash/main.c
@@ -0,0 +1,494 @@
+/*	$NetBSD: main.c,v 1.48 2003/09/14 12:09:29 jmmv Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+__COPYRIGHT("@(#) Copyright (c) 1991, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n");
+#endif /* not lint */
+#ifndef lint
+static char sccsid[] = "@(#)main.c	8.7 (Berkeley) 7/19/95";
+#else
+__RCSID("$NetBSD: main.c,v 1.48 2003/09/14 12:09:29 jmmv Exp $");
+#endif /* not lint */
+#endif
+
+#include <errno.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <locale.h>
+
+
+#include "shell.h"
+#include "main.h"
+#include "mail.h"
+#include "options.h"
+#include "output.h"
+#include "parser.h"
+#include "nodes.h"
+#include "expand.h"
+#include "eval.h"
+#include "jobs.h"
+#include "input.h"
+#include "trap.h"
+#include "var.h"
+#include "show.h"
+#include "memalloc.h"
+#include "error.h"
+#include "init.h"
+#include "mystring.h"
+#include "exec.h"
+#include "cd.h"
+#include "shinstance.h"
+
+#define PROFILE 0
+
+/*int rootpid;
+int rootshell;*/
+#ifdef unused_variables
+STATIC union node *curcmd;
+STATIC union node *prevcmd;
+#endif
+
+STATIC void read_profile(struct shinstance *, const char *);
+STATIC char *find_dot_file(struct shinstance *, char *);
+int main(int, char **, char **);
+SH_NORETURN_1 void shell_main(shinstance *, int, char **) SH_NORETURN_2;
+#ifdef _MSC_VER
+extern void init_syntax(void);
+#endif
+STATIC int usage(const char *argv0);
+STATIC int version(const char *argv0);
+
+/*
+ * Main routine.  We initialize things, parse the arguments, execute
+ * profiles if we're a login shell, and then call cmdloop to execute
+ * commands.  The setjmp call sets up the location to jump to when an
+ * exception occurs.  When an exception occurs the variable "state"
+ * is used to figure out how far we had gotten.
+ */
+
+int
+#if K_OS == K_OS_WINDOWS && defined(SH_FORKED_MODE)
+real_main(int argc, char **argv, char **envp)
+#else
+main(int argc, char **argv, char **envp)
+#endif
+{
+	shinstance *psh;
+
+	/*
+	 * Global initializations.
+	 */
+	setlocale(LC_ALL, "");
+#ifdef _MSC_VER
+	init_syntax();
+#endif
+
+	/*
+	 * Check for --version and --help.
+	 */
+	if (argc > 1 && argv[1][0] == '-' && argv[1][1] == '-') {
+		if (!strcmp(argv[1], "--help"))
+			return usage(argv[0]);
+		if (!strcmp(argv[1], "--version"))
+			return version(argv[0]);
+	}
+
+	/*
+	 * Create the root shell instance.
+	 */
+	psh = sh_create_root_shell(argv, envp);
+	if (!psh)
+		return 2;
+	shthread_set_shell(psh);
+	shell_main(psh, argc, psh->orgargv);
+	/* Not reached. */
+	return 89;
+}
+
+SH_NORETURN_1 void
+shell_main(shinstance *psh, int argc, char **argv)
+{
+	struct jmploc jmploc;
+	struct stackmark smark;
+	volatile int state;
+	char *shinit;
+
+	state = 0;
+	if (setjmp(jmploc.loc)) {
+		/*
+		 * When a shell procedure is executed, we raise the
+		 * exception EXSHELLPROC to clean up before executing
+		 * the shell procedure.
+		 */
+		switch (psh->exception) {
+		case EXSHELLPROC:
+			psh->rootpid = /*getpid()*/ psh->pid;
+			psh->rootshell = 1;
+			psh->minusc = NULL;
+			state = 3;
+			break;
+
+		case EXEXEC:
+			psh->exitstatus = psh->exerrno;
+			break;
+
+		case EXERROR:
+			psh->exitstatus = 2;
+			break;
+
+		default:
+			break;
+		}
+
+		if (psh->exception != EXSHELLPROC) {
+			if (state == 0 || iflag(psh) == 0 || ! psh->rootshell)
+				exitshell(psh, psh->exitstatus);
+		}
+		reset(psh);
+		if (psh->exception == EXINT
+#if ATTY
+		 && (! attyset(psh) || equal(termval(psh), "emacs"))
+#endif
+		 ) {
+			out2c(psh, '\n');
+			flushout(&psh->errout);
+		}
+		popstackmark(psh, &smark);
+		FORCEINTON;				/* enable interrupts */
+		if (state == 1)
+			goto state1;
+		else if (state == 2)
+			goto state2;
+		else if (state == 3)
+			goto state3;
+		else
+			goto state4;
+	}
+	psh->handler = &jmploc;
+	psh->rootpid = /*getpid()*/ psh->pid;
+	psh->rootshell = 1;
+#ifdef DEBUG
+#if DEBUG == 2
+	debug(psh) = 1;
+#endif
+	opentrace(psh);
+	trputs(psh, "Shell args:  ");  trargs(psh, argv);
+#endif
+
+	init(psh);
+	setstackmark(psh, &smark);
+	procargs(psh, argc, argv);
+	if (argv[0] && argv[0][0] == '-') {
+		state = 1;
+		read_profile(psh, "/etc/profile");
+state1:
+		state = 2;
+		read_profile(psh, ".profile");
+	}
+state2:
+	state = 3;
+	if (sh_getuid(psh) == sh_geteuid(psh) && sh_getgid(psh) == sh_getegid(psh)) {
+		if ((shinit = lookupvar(psh, "ENV")) != NULL && *shinit != '\0') {
+			state = 3;
+			read_profile(psh, shinit);
+		}
+	}
+state3:
+	state = 4;
+	if (sflag(psh) == 0 || psh->minusc) {
+		static int sigs[] =  {
+		    SIGINT, SIGQUIT, SIGHUP,
+#ifdef SIGTSTP
+		    SIGTSTP,
+#endif
+		    SIGPIPE
+		};
+#define SIGSSIZE (sizeof(sigs)/sizeof(sigs[0]))
+		unsigned i;
+
+		for (i = 0; i < SIGSSIZE; i++)
+		    setsignal(psh, sigs[i]);
+	}
+
+	if (psh->minusc)
+		evalstring(psh, psh->minusc, 0);
+
+	if (sflag(psh) || psh->minusc == NULL) {
+state4:	/* XXX ??? - why isn't this before the "if" statement */
+		cmdloop(psh, 1);
+	}
+	exitshell(psh, psh->exitstatus);
+	/* NOTREACHED */
+}
+
+
+/*
+ * Read and execute commands.  "Top" is nonzero for the top level command
+ * loop; it turns on prompting if the shell is interactive.
+ */
+
+void
+cmdloop(struct shinstance *psh, int top)
+{
+	union node *n;
+	struct stackmark smark;
+	int inter;
+	int numeof = 0;
+
+	TRACE((psh, "cmdloop(%d) called\n", top));
+	setstackmark(psh, &smark);
+	for (;;) {
+		if (psh->pendingsigs)
+			dotrap(psh);
+		inter = 0;
+		if (iflag(psh) && top) {
+			inter = 1;
+			showjobs(psh, psh->out2, SHOW_CHANGED);
+			chkmail(psh, 0);
+			flushout(&psh->errout);
+		}
+		n = parsecmd(psh, inter);
+		/* showtree(n); DEBUG */
+		if (n == NEOF) {
+			if (!top || numeof >= 50)
+				break;
+			if (!stoppedjobs(psh)) {
+				if (!Iflag(psh))
+					break;
+				out2str(psh, "\nUse \"exit\" to leave shell.\n");
+			}
+			numeof++;
+		} else if (n != NULL && nflag(psh) == 0) {
+			psh->job_warning = (psh->job_warning == 2) ? 1 : 0;
+			numeof = 0;
+			evaltree(psh, n, 0);
+		}
+		popstackmark(psh, &smark);
+		setstackmark(psh, &smark);
+		if (psh->evalskip == SKIPFILE) {
+			psh->evalskip = 0;
+			break;
+		}
+	}
+	popstackmark(psh, &smark);
+}
+
+
+
+/*
+ * Read /etc/profile or .profile.  Return on error.
+ */
+
+STATIC void
+read_profile(struct shinstance *psh, const char *name)
+{
+	int fd;
+	int xflag_set = 0;
+	int vflag_set = 0;
+
+	INTOFF;
+	if ((fd = shfile_open(&psh->fdtab, name, O_RDONLY, 0)) >= 0)
+		setinputfd(psh, fd, 1);
+	INTON;
+	if (fd < 0)
+		return;
+	/* -q turns off -x and -v just when executing init files */
+	if (qflag(psh))  {
+	    if (xflag(psh))
+		    xflag(psh) = 0, xflag_set = 1;
+	    if (vflag(psh))
+		    vflag(psh) = 0, vflag_set = 1;
+	}
+	cmdloop(psh, 0);
+	if (qflag(psh))  {
+	    if (xflag_set)
+		    xflag(psh) = 1;
+	    if (vflag_set)
+		    vflag(psh) = 1;
+	}
+	popfile(psh);
+}
+
+
+
+/*
+ * Read a file containing shell functions.
+ */
+
+void
+readcmdfile(struct shinstance *psh, char *name)
+{
+	int fd;
+
+	INTOFF;
+	if ((fd = shfile_open(&psh->fdtab, name, O_RDONLY, 0)) >= 0)
+		setinputfd(psh, fd, 1);
+	else
+		error(psh, "Can't open %s", name);
+	INTON;
+	cmdloop(psh, 0);
+	popfile(psh);
+}
+
+
+
+/*
+ * Take commands from a file.  To be compatible we should do a path
+ * search for the file, which is necessary to find sub-commands.
+ */
+
+
+STATIC char *
+find_dot_file(struct shinstance *psh, char *basename)
+{
+	char *fullname;
+	const char *path = pathval(psh);
+
+	/* don't try this for absolute or relative paths */
+	if (strchr(basename, '/'))
+		return basename;
+
+	while ((fullname = padvance(psh, &path, basename)) != NULL) {
+		if (shfile_stat_isreg(&psh->fdtab, fullname) > 0) {
+			/*
+			 * Don't bother freeing here, since it will
+			 * be freed by the caller.
+			 */
+			return fullname;
+		}
+		stunalloc(psh, fullname);
+	}
+
+	/* not found in the PATH */
+	error(psh, "%s: not found", basename);
+	/* NOTREACHED */
+	return NULL;
+}
+
+int
+dotcmd(struct shinstance *psh, int argc, char **argv)
+{
+	psh->exitstatus = 0;
+
+	if (argc >= 2) {		/* That's what SVR2 does */
+		char * const savedcommandname = psh->commandname;
+		int const savedcommandnamemalloc = psh->commandnamemalloc;
+		char *fullname;
+		struct stackmark smark;
+
+		setstackmark(psh, &smark);
+		fullname = find_dot_file(psh, argv[1]);
+		setinputfile(psh, fullname, 1);
+		psh->commandname = fullname;
+		psh->commandnamemalloc = 0;
+		cmdloop(psh, 0);
+		popfile(psh);
+		psh->commandname = savedcommandname;
+		psh->commandnamemalloc = savedcommandnamemalloc;
+		popstackmark(psh, &smark);
+	}
+	return psh->exitstatus;
+}
+
+
+int
+exitcmd(struct shinstance *psh, int argc, char **argv)
+{
+	if (stoppedjobs(psh))
+		return 0;
+	if (argc > 1)
+		psh->exitstatus = number(psh, argv[1]);
+	exitshell(psh, psh->exitstatus);
+	/* NOTREACHED */
+	return 1;
+}
+
+
+STATIC const char *
+strip_argv0(const char *argv0, unsigned *lenp)
+{
+	const char *tmp;
+
+	/* skip the path */
+	for (tmp = strpbrk(argv0, "\\/:"); tmp; tmp = strpbrk(argv0, "\\/:"))
+		argv0 = tmp + 1;
+
+	/* find the end, ignoring extenions */
+	tmp = strrchr(argv0, '.');
+	if (!tmp)
+		tmp = strchr(argv0, '\0');
+	*lenp = (unsigned)(tmp - argv0);
+	return argv0;
+}
+
+STATIC int
+usage(const char *argv0)
+{
+	unsigned len;
+	argv0 = strip_argv0(argv0, &len);
+
+	fprintf(stdout,
+			"usage: %.*s [-aCefnuvxIimqVEb] [+aCefnuvxIimqVEb] [-o option_name]\n"
+		    "               [+o option_name] [command_file [argument ...]]\n"
+		    "   or: %.*s -c [-aCefnuvxIimqVEb] [+aCefnuvxIimqVEb] [-o option_name]\n"
+		    "               [+o option_name] command_string [command_name [argument ...]]\n"
+		    "   or: %.*s -s [-aCefnuvxIimqVEb] [+aCefnuvxIimqVEb] [-o option_name]\n"
+		    "               [+o option_name] [argument ...]\n"
+		    "   or: %.*s --help\n"
+		    "   or: %.*s --version\n",
+		    len, argv0, len, argv0, len, argv0, len, argv0, len, argv0);
+	return 0;
+}
+
+STATIC int
+version(const char *argv0)
+{
+	unsigned len;
+	strip_argv0(argv0, &len);
+
+	fprintf(stdout,
+			"%.*s - kBuild version %d.%d.%d (r%u)\n",
+		    len, argv0,
+		    KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH, KBUILD_SVN_REV);
+	return 0;
+}
+
+
+/*
+ * Local Variables:
+ *   c-file-style: bsd
+ * End:
+ */
diff --git a/src/kash/main.h b/src/kash/main.h
new file mode 100644
index 0000000..c8f54e9
--- /dev/null
+++ b/src/kash/main.h
@@ -0,0 +1,44 @@
+/*	$NetBSD: main.h,v 1.10 2003/08/07 09:05:34 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)main.h	8.2 (Berkeley) 5/4/95
+ */
+
+#include "shtypes.h"
+/*extern int rootpid;*/	/* pid of main shell */
+/*extern int rootshell;*/	/* true if we aren't a child of the main shell */
+
+void readcmdfile(struct shinstance *, char *);
+void cmdloop(struct shinstance *, int);
+int dotcmd(struct shinstance *, int, char **);
+int exitcmd(struct shinstance *, int, char **);
diff --git a/src/kash/memalloc.c b/src/kash/memalloc.c
new file mode 100644
index 0000000..9745ebf
--- /dev/null
+++ b/src/kash/memalloc.c
@@ -0,0 +1,725 @@
+/*	$NetBSD: memalloc.c,v 1.28 2003/08/07 09:05:34 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)memalloc.c	8.3 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: memalloc.c,v 1.28 2003/08/07 09:05:34 agc Exp $");
+#endif /* not lint */
+#endif
+
+#include <stdlib.h>
+#include <stddef.h>
+
+#include "shell.h"
+#include "output.h"
+#include "memalloc.h"
+#include "error.h"
+#include "machdep.h"
+#include "mystring.h"
+#include "shinstance.h"
+#include "nodes.h"
+
+/*
+ * Like malloc, but returns an error when out of space.
+ */
+
+pointer
+ckmalloc(shinstance *psh, size_t nbytes)
+{
+	pointer p;
+
+	p = sh_malloc(psh, nbytes);
+	if (p == NULL)
+		error(psh, "Out of space");
+	return p;
+}
+
+
+/*
+ * Same for realloc.
+ */
+
+pointer
+ckrealloc(struct shinstance *psh, pointer p, size_t nbytes)
+{
+	p = sh_realloc(psh, p, nbytes);
+	if (p == NULL)
+		error(psh, "Out of space");
+	return p;
+}
+
+
+/*
+ * Make a copy of a string in safe storage.
+ */
+
+char *
+savestr(struct shinstance *psh, const char *s)
+{
+	char *p;
+	size_t len = strlen(s);
+
+	p = ckmalloc(psh, len + 1);
+	memcpy(p, s, len + 1);
+	return p;
+}
+
+
+/*
+ * Parse trees for commands are allocated in lifo order, so we use a stack
+ * to make this more efficient, and also to avoid all sorts of exception
+ * handling code to handle interrupts in the middle of a parse.
+ *
+ * The size 504 was chosen because the Ultrix malloc handles that size
+ * well.
+ */
+
+//#define MINSIZE 504		/* minimum size of a block */
+
+//struct stack_block {
+//	struct stack_block *prev;
+//	char space[MINSIZE];
+//};
+
+//struct stack_block stackbase;
+//struct stack_block *stackp = &stackbase;
+//struct stackmark *markp;
+//char *stacknxt = stackbase.space;
+//int stacknleft = MINSIZE;
+//int sstrnleft;
+//int herefd = -1;
+
+pointer
+stalloc(shinstance *psh, size_t nbytes)
+{
+	char *p;
+
+	nbytes = SHELL_ALIGN(nbytes);
+	if (nbytes > (size_t)psh->stacknleft || psh->stacknleft < 0) {
+		size_t blocksize;
+		struct stack_block *sp;
+
+		blocksize = nbytes;
+		if (blocksize < MINSIZE)
+			blocksize = MINSIZE;
+		INTOFF;
+		sp = ckmalloc(psh, sizeof(struct stack_block) - MINSIZE + blocksize);
+		sp->prev = psh->stackp;
+		psh->stacknxt = sp->space;
+		psh->stacknleft = (int)blocksize;
+		psh->stackp = sp;
+		INTON;
+	}
+	p = psh->stacknxt;
+	psh->stacknxt += nbytes;
+	psh->stacknleft -= (int)nbytes;
+	return p;
+}
+
+
+char *
+stsavestr(struct shinstance *psh, const char *src)
+{
+	if (src) {
+		size_t size = strlen(src) + 1;
+		char *dst = (char *)stalloc(psh, size);
+		return (char *)memcpy(dst, src, size);
+	}
+	return NULL;
+}
+
+
+void
+stunalloc(shinstance *psh, pointer p)
+{
+	if (p == NULL) {		/*DEBUG */
+		shfile_write(&psh->fdtab, 2, "stunalloc\n", 10);
+		sh_abort(psh);
+	}
+	psh->stacknleft += (int)(psh->stacknxt - (char *)p);
+	psh->stacknxt = p;
+}
+
+
+
+void
+setstackmark(shinstance *psh, struct stackmark *mark)
+{
+	mark->stackp = psh->stackp;
+	mark->stacknxt = psh->stacknxt;
+	mark->stacknleft = psh->stacknleft;
+	mark->marknext = psh->markp;
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	mark->pstacksize = psh->pstacksize;
+#endif
+	psh->markp = mark;
+}
+
+
+void
+popstackmark(shinstance *psh, struct stackmark *mark)
+{
+	struct stack_block *sp;
+
+	INTOFF;
+	psh->markp = mark->marknext;
+	while (psh->stackp != mark->stackp) {
+		sp = psh->stackp;
+		psh->stackp = sp->prev;
+		ckfree(psh, sp);
+	}
+	psh->stacknxt = mark->stacknxt;
+	psh->stacknleft = mark->stacknleft;
+
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	pstackpop(psh, mark->pstacksize);
+#endif
+	INTON;
+}
+
+
+/*
+ * When the parser reads in a string, it wants to stick the string on the
+ * stack and only adjust the stack pointer when it knows how big the
+ * string is.  Stackblock (defined in stack.h) returns a pointer to a block
+ * of space on top of the stack and stackblocklen returns the length of
+ * this block.  Growstackblock will grow this space by at least one byte,
+ * possibly moving it (like realloc).  Grabstackblock actually allocates the
+ * part of the block that has been used.
+ */
+
+void
+growstackblock(shinstance *psh)
+{
+	int newlen = SHELL_ALIGN(psh->stacknleft * 2 + 100);
+
+	if (psh->stacknxt == psh->stackp->space && psh->stackp != &psh->stackbase) {
+		struct stack_block *oldstackp;
+		struct stackmark *xmark;
+		struct stack_block *sp;
+
+		INTOFF;
+		oldstackp = psh->stackp;
+		sp = psh->stackp;
+		psh->stackp = sp->prev;
+		sp = ckrealloc(psh, (pointer)sp,
+		    sizeof(struct stack_block) - MINSIZE + newlen);
+		sp->prev = psh->stackp;
+		psh->stackp = sp;
+		psh->stacknxt = sp->space;
+		psh->stacknleft = newlen;
+
+		/*
+		 * Stack marks pointing to the start of the old block
+		 * must be relocated to point to the new block
+		 */
+		xmark = psh->markp;
+		while (xmark != NULL && xmark->stackp == oldstackp) {
+			xmark->stackp = psh->stackp;
+			xmark->stacknxt = psh->stacknxt;
+			xmark->stacknleft = psh->stacknleft;
+			xmark = xmark->marknext;
+		}
+		INTON;
+	} else {
+		char *oldspace = psh->stacknxt;
+		int oldlen = psh->stacknleft;
+		char *p = stalloc(psh, newlen);
+
+		(void)memcpy(p, oldspace, oldlen);
+		psh->stacknxt = p;			/* free the space */
+		psh->stacknleft += newlen;		/* we just allocated */
+	}
+}
+
+void
+grabstackblock(shinstance *psh, int len)
+{
+	len = SHELL_ALIGN(len);
+	psh->stacknxt += len;
+	psh->stacknleft -= len;
+}
+
+/*
+ * The following routines are somewhat easier to use than the above.
+ * The user declares a variable of type STACKSTR, which may be declared
+ * to be a register.  The macro STARTSTACKSTR initializes things.  Then
+ * the user uses the macro STPUTC to add characters to the string.  In
+ * effect, STPUTC(psh, c, p) is the same as *p++ = c except that the stack is
+ * grown as necessary.  When the user is done, she can just leave the
+ * string there and refer to it using stackblock(psh).  Or she can allocate
+ * the space for it using grabstackstr().  If it is necessary to allow
+ * someone else to use the stack temporarily and then continue to grow
+ * the string, the user should use grabstack to allocate the space, and
+ * then call ungrabstr(p) to return to the previous mode of operation.
+ *
+ * USTPUTC is like STPUTC except that it doesn't check for overflow.
+ * CHECKSTACKSPACE can be called before USTPUTC to ensure that there
+ * is space for at least one character.
+ */
+
+char *
+growstackstr(shinstance *psh)
+{
+	int len = stackblocksize(psh);
+	if (psh->herefd >= 0 && len >= 1024) {
+		xwrite(psh, psh->herefd, stackblock(psh), len);
+		psh->sstrnleft = len - 1;
+		return stackblock(psh);
+	}
+	growstackblock(psh);
+	psh->sstrnleft = stackblocksize(psh) - len - 1;
+	return stackblock(psh) + len;
+}
+
+/*
+ * Called from CHECKSTRSPACE.
+ */
+
+char *
+makestrspace(shinstance *psh)
+{
+	int len = stackblocksize(psh) - psh->sstrnleft;
+	growstackblock(psh);
+	psh->sstrnleft = stackblocksize(psh) - len;
+	return stackblock(psh) + len;
+}
+
+
+/*
+ * Got better control having a dedicated function for this.
+ *
+ * Was: #define grabstackstr(psh, p)   stalloc((psh), stackblocksize(psh) - (psh)->sstrnleft)
+ */
+char *
+grabstackstr(shinstance *psh, char *end)
+{
+	char * const pstart = stackblock(psh);
+	size_t nbytes = (size_t)(end - pstart);
+
+	kHlpAssert((uintptr_t)end >= (uintptr_t)pstart);
+	/*kHlpAssert(end[-1] == '\0'); - not if it's followed by ungrabstrackstr(), sigh. */
+	kHlpAssert(SHELL_ALIGN((uintptr_t)pstart) == (uintptr_t)pstart);
+	kHlpAssert(stackblocksize(psh) - psh->sstrnleft >= (ssize_t)nbytes);
+
+	nbytes = SHELL_ALIGN(nbytes);
+	psh->stacknxt += nbytes;
+	psh->stacknleft -= (int)nbytes;
+	kHlpAssert(psh->stacknleft >= 0);
+
+	return pstart;
+}
+
+void
+ungrabstackstr(shinstance *psh, char *s, char *p)
+{
+	kHlpAssert((size_t)(psh->stacknxt - p) <= SHELL_SIZE);
+	kHlpAssert((uintptr_t)s >= (uintptr_t)&psh->stackp->space[0]);
+	kHlpAssert((uintptr_t)p >= (uintptr_t)s);
+
+	psh->stacknleft += (int)(psh->stacknxt - s);
+	psh->stacknxt = s;
+	psh->sstrnleft = (int)(psh->stacknleft - (p - s));
+
+}
+
+
+/*
+ * Parser stack allocator.
+ */
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+
+unsigned pstackrelease(shinstance *psh, pstack_block *pst, const char *caller)
+{
+	unsigned refs;
+	if (pst) {
+		refs = sh_atomic_dec(&pst->refs);
+		TRACE2((NULL, "pstackrelease: %p - %u refs (%s)\n", pst, refs, caller)); K_NOREF(caller);
+		if (refs == 0) {
+			struct stack_block *top;
+			while ((top = pst->top) != &pst->first) {
+				pst->top = top->prev;
+				kHlpAssert(pst->top);
+				top->prev = NULL;
+				sh_free(psh, top);
+			}
+			pst->nextbyte = NULL;
+			pst->top = NULL;
+
+			if (!psh->freepstack)
+				psh->freepstack = pst;
+			else
+				sh_free(psh, pst);
+		}
+	} else
+		refs = 0;
+	return refs;
+}
+
+void pstackpop(shinstance *psh, unsigned target)
+{
+	kHlpAssert(target <= psh->pstacksize);
+	while (target < psh->pstacksize) {
+		unsigned idx = --psh->pstacksize;
+		pstack_block *pst = psh->pstack[idx];
+		psh->pstack[idx] = NULL;
+		if (psh->curpstack == pst) {
+			pstack_block *pstnext;
+			if (idx <= 0 || (pstnext = psh->pstack[idx - 1])->done)
+				psh->curpstack = NULL;
+			else
+				psh->curpstack = pstnext;
+		}
+		pstackrelease(psh, pst, "popstackmark");
+	}
+
+# ifndef NDEBUG
+	if (psh->curpstack) {
+		unsigned i;
+		for (i = 0; i < psh->pstacksize; i++)
+			if (psh->curpstack == psh->pstack[i])
+				break;
+		kHlpAssert(i < psh->pstacksize);
+	}
+# endif
+}
+
+
+unsigned pstackretain(pstack_block *pst)
+{
+	unsigned refs = sh_atomic_inc(&pst->refs);
+	kHlpAssert(refs > 1);
+	kHlpAssert(refs < 256 /* bogus, but useful */);
+	return refs;
+}
+
+K_INLINE void pstackpush(shinstance *psh, pstack_block *pst)
+{
+	unsigned i = psh->pstacksize;
+	if (i + 1 < psh->pstackalloced) {
+		/* likely, except for the first time */
+	} else {
+		psh->pstack = (pstack_block **)ckrealloc(psh, psh->pstack, sizeof(psh->pstack[0]) * (i + 32));
+		memset(&psh->pstack[i], 0, sizeof(psh->pstack[0]) * 32);
+	}
+	psh->pstack[i] = pst;
+	psh->pstacksize = i + 1;
+}
+
+/* Does not make it current! */
+unsigned pstackretainpush(shinstance *psh, pstack_block *pst)
+{
+	unsigned refs = pstackretain(pst);
+	pstackpush(psh, pst);
+	TRACE2((psh, "pstackretainpush: %p - entry %u - %u refs\n", pst, psh->pstacksize - 1, refs));
+	return refs;
+}
+
+pstack_block *pstackallocpush(shinstance *psh)
+{
+	size_t const blocksize = offsetof(pstack_block, first.space) + MINSIZE;
+	pstack_block *pst;
+
+	INTOFF;
+
+	/*
+	 * Allocate and initialize it.
+	 */
+	pst = psh->freepstack;
+	if (pst)
+		psh->freepstack = NULL;
+	else
+		pst = (pstack_block *)ckmalloc(psh, blocksize);
+	pst->nextbyte          = &pst->first.space[0];
+	pst->avail             = blocksize - offsetof(pstack_block, first.space);
+	pst->topsize           = blocksize - offsetof(pstack_block, first.space);
+	pst->strleft           = 0;
+	pst->top               = &pst->first;
+	pst->allocations       = 0;
+	pst->bytesalloced      = 0;
+	pst->nodesalloced      = 0;
+	pst->entriesalloced    = 0;
+	pst->strbytesalloced   = 0;
+	pst->blocks            = 0;
+	pst->fragmentation     = 0;
+	pst->refs              = 1;
+	pst->done              = K_FALSE;
+	pst->first.prev        = NULL;
+
+	/*
+	 * Push it onto the stack and make it current.
+	 */
+	pstackpush(psh, pst);
+	psh->curpstack = pst;
+
+	INTON;
+	TRACE2((psh, "pstackallocpush: %p - entry %u\n", pst, psh->pstacksize - 1));
+	return pst;
+}
+
+/**
+ * Marks the block as done, preventing it from being marked current again.
+ */
+void pstackmarkdone(pstack_block *pst)
+{
+	pst->done = K_TRUE;
+}
+
+/**
+ * Allocates and pushes a new block onto the stack, min payload size @a nbytes.
+ */
+static void pstallocnewblock(shinstance *psh, pstack_block *pst, size_t nbytes)
+{
+	/* Allocate a new stack node. */
+	struct stack_block *sp;
+	size_t const blocksize = nbytes <= MINSIZE
+	                       ? offsetof(struct stack_block, space) + MINSIZE
+	                       : K_ALIGN_Z(nbytes + offsetof(struct stack_block, space), 1024);
+
+	INTOFF;
+	sp = ckmalloc(psh, blocksize);
+	sp->prev = pst->top;
+	pst->fragmentation += pst->avail;
+	pst->topsize        = blocksize - offsetof(struct stack_block, space);
+	pst->avail          = blocksize - offsetof(struct stack_block, space);
+	pst->nextbyte       = sp->space;
+	pst->top            = sp;
+	pst->blocks        += 1;
+	INTON;
+}
+
+/**
+ * Tries to grow the current stack block to hold a minimum of @a nbytes,
+ * will allocate a new block and copy over pending string bytes if that's not
+ * possible.
+ */
+static void pstgrowblock(shinstance *psh, pstack_block *pst, size_t nbytes, size_t tocopy)
+{
+	struct stack_block *top = pst->top;
+	size_t blocksize;
+
+	kHlpAssert(pst->avail < nbytes); /* only called when we need more space */
+	kHlpAssert(tocopy <= pst->avail);
+
+	/* Double the size used thus far and add some fudge and alignment.  Make
+	   sure to at least allocate MINSIZE. */
+	blocksize = K_MAX(K_ALIGN_Z(pst->avail * 2 + 100 + offsetof(struct stack_block, space), 64), MINSIZE);
+
+	/* If that isn't sufficient, do request size w/ some fudge and alignment. */
+	if (blocksize < nbytes + offsetof(struct stack_block, space))
+	    blocksize = K_ALIGN_Z(nbytes + offsetof(struct stack_block, space) + 100, 1024);
+
+	/*
+	 * Reallocate the current stack node if we can.
+	 */
+	if (   pst->nextbyte == &top->space[0] /* can't have anything else in the block */
+	    && top->prev != NULL /* first block is embedded in pst and cannot be reallocated */ ) {
+		top = (struct stack_block *)ckrealloc(psh, top, blocksize);
+		pst->top      = top;
+		pst->topsize  = blocksize - offsetof(struct stack_block, space);
+		pst->avail    = blocksize - offsetof(struct stack_block, space);
+		pst->nextbyte = top->space;
+	}
+	/*
+	 * Otherwise allocate a new node and copy over the avail bytes
+	 * from the old one.
+	 */
+	else {
+		char const * const copysrc = pst->nextbyte;
+		pstallocnewblock(psh, pst, nbytes);
+		kHlpAssert(pst->avail >= nbytes);
+		kHlpAssert(pst->avail >= tocopy);
+		memcpy(pst->nextbyte, copysrc, tocopy);
+	}
+}
+
+K_INLINE void *pstallocint(shinstance *psh, pstack_block *pst, size_t nbytes)
+{
+	void *ret;
+
+	/*
+	 * Align the size and make sure we've got sufficient bytes available:
+	 */
+	nbytes = SHELL_ALIGN(nbytes);
+	if (pst->avail >= nbytes && (ssize_t)pst->avail >= 0) { /* likely*/ }
+	else pstallocnewblock(psh, pst, nbytes);
+
+	/*
+	 * Carve out the return block.
+	 */
+	ret = pst->nextbyte;
+	pst->nextbyte     += nbytes;
+	pst->avail        -= nbytes;
+	pst->bytesalloced += nbytes;
+	pst->allocations  += 1;
+	return ret;
+}
+
+#endif /* KASH_SEPARATE_PARSER_ALLOCATOR */
+
+
+void *pstalloc(struct shinstance *psh, size_t nbytes)
+{
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	return pstallocint(psh, psh->curpstack, nbytes);
+#else
+	return stalloc(psh, nbytes);
+#endif
+}
+
+union node *pstallocnode(struct shinstance *psh, size_t nbytes)
+{
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	pstack_block * const pst = psh->curpstack;
+	union node * const ret = (union node *)pstallocint(psh, pst, nbytes);
+	pst->nodesalloced++;
+	ret->pblock = pst;
+	return ret;
+#else
+	return (union node *)pstalloc(psh, nbytes);
+#endif
+}
+
+struct nodelist *pstalloclist(struct shinstance *psh)
+{
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	pstack_block *pst = psh->curpstack;
+	pst->entriesalloced++;
+	return (struct nodelist *)pstallocint(psh, pst, sizeof(struct nodelist));
+#endif
+	return (struct nodelist *)pstalloc(psh, sizeof(struct nodelist));
+}
+
+char *pstsavestr(struct shinstance *psh, const char *str)
+{
+	if (str) {
+		size_t const nbytes = strlen(str) + 1;
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+		pstack_block *pst = psh->curpstack;
+		pst->strbytesalloced += SHELL_ALIGN(nbytes);
+		return (char *)memcpy(pstallocint(psh, pst, nbytes), str, nbytes);
+#else
+		return (char *)memcpy(pstalloc(psh, nbytes), str, nbytes);
+#endif
+	}
+	return NULL;
+}
+
+char *pstmakestrspace(struct shinstance *psh, size_t minbytes, char *end)
+{
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	pstack_block *pst = psh->curpstack;
+	size_t const len = end - pst->nextbyte;
+
+	kHlpAssert(pst->avail - pst->strleft == len);
+	TRACE2((psh, "pstmakestrspace: len=%u minbytes=%u (=> %u)\n", len, minbytes, len + minbytes));
+
+	pstgrowblock(psh, pst, minbytes + len, len);
+
+	pst->strleft = pst->avail - len;
+	return pst->nextbyte + len;
+
+#else
+	size_t const len = end - stackblock(psh);
+
+	kHlpAssert(stackblocksize(psh) - psh->sstrnleft == len);
+	TRACE2((psh, "pstmakestrspace: len=%u minbytes=%u (=> %u)\n", len, minbytes, len + minbytes));
+
+	minbytes += len;
+	while (stackblocksize(psh) < minbytes)
+		growstackblock(psh);
+
+	psh->sstrnleft = (int)(stackblocksize(psh) - len);
+	return (char *)stackblock(psh) + len;
+#endif
+}
+
+/* PSTPUTC helper */
+char *pstputcgrow(shinstance *psh, char *end, char c)
+{
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	pstack_block *pst = psh->curpstack;
+	pst->strleft++; 	/* PSTPUTC() already incremented it. */
+	end = pstmakestrspace(psh, 1, end);
+	kHlpAssert(pst->strleft > 0);
+	pst->strleft--;
+#else
+	psh->sstrnleft++; 	/* PSTPUTC() already incremented it. */
+	end = pstmakestrspace(psh, 1, end);
+	kHlpAssert(psh->sstrnleft > 0);
+	psh->sstrnleft--;
+#endif
+	*end++ = c;
+	return end;
+}
+
+
+char *pstgrabstr(struct shinstance *psh, char *end)
+{
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	pstack_block *pst = psh->curpstack;
+	char * const pstart = pst->nextbyte;
+	size_t nbytes = (size_t)(end - pstart);
+
+	kHlpAssert((uintptr_t)end > (uintptr_t)pstart);
+	kHlpAssert(end[-1] == '\0');
+	kHlpAssert(SHELL_ALIGN((uintptr_t)pstart) == (uintptr_t)pstart);
+	kHlpAssert(pst->avail - pst->strleft >= nbytes);
+
+	nbytes = SHELL_ALIGN(nbytes); /** @todo don't align strings, align the other allocations. */
+	pst->nextbyte += nbytes;
+	pst->avail    -= nbytes;
+	pst->strbytesalloced += nbytes;
+
+	return pstart;
+
+#else
+	char * const pstart = stackblock(psh);
+	size_t nbytes = (size_t)(end - pstart);
+
+	kHlpAssert((uintptr_t)end > (uintptr_t)pstart);
+	kHlpAssert(end[-1] == '\0');
+	kHlpAssert(SHELL_ALIGN((uintptr_t)pstart) == (uintptr_t)pstart);
+	kHlpAssert(stackblocksize(psh) - psh->sstrnleft >= nbytes);
+
+	nbytes = SHELL_ALIGN(nbytes); /** @todo don't align strings, align the other allocations. */
+	psh->stacknxt += nbytes;
+	psh->stacknleft -= (int)nbytes;
+
+	return pstart;
+#endif
+}
+
diff --git a/src/kash/memalloc.h b/src/kash/memalloc.h
new file mode 100644
index 0000000..c85e3ac
--- /dev/null
+++ b/src/kash/memalloc.h
@@ -0,0 +1,147 @@
+/*	$NetBSD: memalloc.h,v 1.14 2003/08/07 09:05:34 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)memalloc.h	8.2 (Berkeley) 5/4/95
+ */
+
+struct stackmark {
+	struct stack_block *stackp;
+	char *stacknxt;
+	int stacknleft;
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+        unsigned pstacksize;
+#endif
+	struct stackmark *marknext;
+};
+
+
+/*extern char *stacknxt;
+extern int stacknleft;
+extern int sstrnleft;
+extern int herefd;*/
+
+pointer ckmalloc(struct shinstance *, size_t);
+pointer ckrealloc(struct shinstance *, pointer, size_t);
+char *savestr(struct shinstance *, const char *);
+#define ckfree(psh, p)  sh_free(psh, (pointer)(p))
+
+#ifndef SH_MEMALLOC_NO_STACK
+pointer stalloc(struct shinstance *, size_t);
+char *stsavestr(struct shinstance *, const char *);
+void stunalloc(struct shinstance *, pointer);
+void setstackmark(struct shinstance *, struct stackmark *);
+void popstackmark(struct shinstance *, struct stackmark *);
+void growstackblock(struct shinstance *);
+void grabstackblock(struct shinstance *, int);
+char *growstackstr(struct shinstance *);
+char *makestrspace(struct shinstance *);
+char *grabstackstr(struct shinstance *, char *); /* was #define using stalloc */
+void ungrabstackstr(struct shinstance *, char *, char *);
+
+#define stackblock(psh)             (psh)->stacknxt
+#define stackblocksize(psh)         (psh)->stacknleft
+#define STARTSTACKSTR(psh, p)       p = stackblock(psh), (psh)->sstrnleft = stackblocksize(psh)
+#define STPUTC(psh, c, p)           (--(psh)->sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(psh), *p++ = (c)))
+#define CHECKSTRSPACE(psh, n, p)    { if ((psh)->sstrnleft < n) p = makestrspace(psh); }
+#define USTPUTC(psh, c, p)          do { kHlpAssert((psh)->sstrnleft > 0); \
+                                         kHlpAssert(p - (char *)stackblock(psh) == stackblocksize(psh) - (psh)->sstrnleft); \
+                                         --(psh)->sstrnleft; *p++ = (c); } while (0)
+#define STACKSTRNUL(psh, p)         ((psh)->sstrnleft == 0? (p = growstackstr(psh), *p = '\0') : (*p = '\0'))
+#define STUNPUTC(psh, p)            (++(psh)->sstrnleft, --p)
+#define STADJUST(psh, amount, p)    (p += (amount), (psh)->sstrnleft -= (amount))
+#endif /* SH_MEMALLOC_NO_STACK */
+
+/** @name Stack allocator for parser.
+ * This is a stripped down version of the general stack allocator interface for
+ * the exclusive use of the parser, so that parsetrees can be shared with
+ * subshells by simple reference counting.
+ * @{ */
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+struct pstack_block;
+unsigned pstackretain(struct pstack_block *);
+void pstackpop(struct shinstance *, unsigned);
+unsigned pstackrelease(struct shinstance *, struct pstack_block *, const char *);
+unsigned pstackretainpush(struct shinstance *, struct pstack_block *);
+struct pstack_block *pstackallocpush(struct shinstance *);
+void pstackmarkdone(struct pstack_block *);
+#endif
+void *pstalloc(struct shinstance *, size_t);
+union node;
+union node *pstallocnode(struct shinstance *, size_t);
+struct nodelist;
+struct nodelist *pstalloclist(struct shinstance *);
+char *pstsavestr(struct shinstance *, const char *); /* was: stsavestr */
+char *pstmakestrspace(struct shinstance *, size_t, char *); /* was: makestrspace / growstackstr */
+char *pstputcgrow(struct shinstance *, char *, char);
+char *pstgrabstr(struct shinstance *, char *); /* was: grabstackstr / grabstackblock*/
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+# define PSTBLOCK(psh)               ((psh)->curpstack->nextbyte)
+# define PSTARTSTACKSTR(psh, p) do { \
+        pstack_block *pstmacro = (psh)->curpstack; \
+        pstmacro->strleft = pstmacro->avail; \
+        (p) = pstmacro->nextbyte; \
+    } while (0)
+# define PSTCHECKSTRSPACE(psh, n, p) do { \
+        if ((psh)->curpstack->strleft >= (n)) {/*likely*/} \
+        else { (p) = pstmakestrspace(psh, (n), (p)); kHlpAssert((psh)->curpstack->strleft >= (n)); } \
+    } while (0)
+# define PSTUPUTC(psh, c, p) do { \
+        kHlpAssert((psh)->curpstack->strleft > 0); \
+        (psh)->curpstack->strleft -= 1; \
+        *(p)++ = (c); \
+    } while (0)
+# define PSTPUTC(psh, c, p) do { \
+        if ((ssize_t)--(psh)->curpstack->strleft >= 0) *(p)++ = (c); \
+        else (p) = pstputcgrow(psh, (p), (c)); \
+    } while (0)
+# define PSTPUTSTRN(psh, str, n, p) do { \
+        pstack_block *pstmacro = (psh)->curpstack; \
+        if (pstmacro->strleft >= (size_t)(n)) {/*likely?*/} \
+        else (p) = pstmakestrspace(psh, (n), (p)); \
+        pstmacro->strleft -= (n); \
+        memcpy((p), (str), (n)); \
+        (p) += (n); \
+    } while (0)
+#else
+# define PSTBLOCK(psh)               ((psh)->stacknxt)
+# define PSTARTSTACKSTR(psh, p)      do { (p) = (psh)->stacknxt; (psh)->sstrnleft = (psh)->stacknleft; } while (0)
+# define PSTCHECKSTRSPACE(psh, n, p) do { if ((psh)->sstrnleft >= (n)) {/*likely*/} \
+                                         else { (p) = pstmakestrspace(psh, (n), (p)); kHlpAssert((psh)->sstrnleft >= (n)); } } while (0)
+# define PSTUPUTC(psh, c, p)         do { kHlpAssert((psh)->sstrnleft > 0); --(psh)->sstrnleft; *(p)++ = (c); } while (0)
+# define PSTPUTC(psh, c, p)          do { if (--(psh)->sstrnleft >= 0) *(p)++ = (c); else (p) = pstputcgrow(psh, (p), (c)); } while (0)
+# define PSTPUTSTRN(psh, str, n, p)  do { if ((psh)->sstrnleft >= (size_t)(n)) {/*likely?*/} else (p) = pstmakestrspace(psh, (n), (p)); \
+                                         memcpy((p), (str), (n)); (psh)->sstrnleft -= (n); (p) += (n); } while (0)
+#endif
+/** @} */
+
+
diff --git a/src/kash/miscbltin.c b/src/kash/miscbltin.c
new file mode 100644
index 0000000..e251859
--- /dev/null
+++ b/src/kash/miscbltin.c
@@ -0,0 +1,443 @@
+/*	$NetBSD: miscbltin.c,v 1.35 2005/03/19 14:22:50 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)miscbltin.c	8.4 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: miscbltin.c,v 1.35 2005/03/19 14:22:50 dsl Exp $");
+#endif /* not lint */
+#endif
+
+/*
+ * Miscelaneous builtins.
+ */
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <errno.h>
+
+#include "shell.h"
+#include "options.h"
+#include "var.h"
+#include "output.h"
+#include "memalloc.h"
+#include "error.h"
+#include "miscbltin.h"
+#include "mystring.h"
+#include "shinstance.h"
+#include "shfile.h"
+
+#undef rflag
+
+void *kash_setmode(shinstance *psh, const char *p);
+mode_t kash_getmode(const void *bbox, mode_t omode);
+
+
+/*
+ * The read builtin.
+ * Backslahes escape the next char unless -r is specified.
+ *
+ * This uses unbuffered input, which may be avoidable in some cases.
+ *
+ * Note that if IFS=' :' then read x y should work so that:
+ * 'a b'	x='a', y='b'
+ * ' a b '	x='a', y='b'
+ * ':b'		x='',  y='b'
+ * ':'		x='',  y=''
+ * '::'		x='',  y=''
+ * ': :'	x='',  y=''
+ * ':::'	x='',  y='::'
+ * ':b c:'	x='',  y='b c:'
+ */
+
+int
+readcmd(shinstance *psh, int argc, char **argv)
+{
+	char **ap;
+	char c;
+	int rflag;
+	char *prompt;
+	const char *ifs;
+	char *p;
+	int startword;
+	int status;
+	int i;
+	int is_ifs;
+	int saveall = 0;
+
+	rflag = 0;
+	prompt = NULL;
+	while ((i = nextopt(psh, "p:r")) != '\0') {
+		if (i == 'p')
+			prompt = psh->optionarg;
+		else
+			rflag = 1;
+	}
+
+	if (prompt && shfile_isatty(&psh->fdtab, 0)) {
+		out2str(psh, prompt);
+		output_flushall(psh);
+	}
+
+	if (*(ap = psh->argptr) == NULL)
+		error(psh, "arg count");
+
+	if ((ifs = bltinlookup(psh, "IFS", 1)) == NULL)
+		ifs = " \t\n";
+
+	status = 0;
+	startword = 2;
+	STARTSTACKSTR(psh, p);
+	for (;;) {
+		if (shfile_read(&psh->fdtab, 0, &c, 1) != 1) {
+			status = 1;
+			break;
+		}
+		if (c == '\0')
+			continue;
+		if (c == '\\' && !rflag) {
+			if (shfile_read(&psh->fdtab, 0, &c, 1) != 1) {
+				status = 1;
+				break;
+			}
+			if (c != '\n')
+				STPUTC(psh, c, p);
+			continue;
+		}
+		if (c == '\n')
+			break;
+		if (strchr(ifs, c))
+			is_ifs = strchr(" \t\n", c) ? 1 : 2;
+		else
+			is_ifs = 0;
+
+		if (startword != 0) {
+			if (is_ifs == 1) {
+				/* Ignore leading IFS whitespace */
+				if (saveall)
+					STPUTC(psh, c, p);
+				continue;
+			}
+			if (is_ifs == 2 && startword == 1) {
+				/* Only one non-whitespace IFS per word */
+				startword = 2;
+				if (saveall)
+					STPUTC(psh, c, p);
+				continue;
+			}
+		}
+
+		if (is_ifs == 0) {
+			/* append this character to the current variable */
+			startword = 0;
+			if (saveall)
+				/* Not just a spare terminator */
+				saveall++;
+			STPUTC(psh, c, p);
+			continue;
+		}
+
+		/* end of variable... */
+		startword = is_ifs;
+
+		if (ap[1] == NULL) {
+			/* Last variable needs all IFS chars */
+			saveall++;
+			STPUTC(psh, c, p);
+			continue;
+		}
+
+		STACKSTRNUL(psh, p);
+		setvar(psh, *ap, stackblock(psh), 0);
+		ap++;
+		STARTSTACKSTR(psh, p);
+	}
+	STACKSTRNUL(psh, p);
+
+	/* Remove trailing IFS chars */
+	for (; stackblock(psh) <= --p; *p = 0) {
+		if (!strchr(ifs, *p))
+			break;
+		if (strchr(" \t\n", *p))
+			/* Always remove whitespace */
+			continue;
+		if (saveall > 1)
+			/* Don't remove non-whitespace unless it was naked */
+			break;
+	}
+	setvar(psh, *ap, stackblock(psh), 0);
+
+	/* Set any remaining args to "" */
+	while (*++ap != NULL)
+		setvar(psh, *ap, nullstr, 0);
+	return status;
+}
+
+
+
+int
+umaskcmd(shinstance *psh, int argc, char **argv)
+{
+	char *ap;
+	int mask;
+	int i;
+	int symbolic_mode = 0;
+
+	while ((i = nextopt(psh, "S")) != '\0') {
+		symbolic_mode = 1;
+	}
+
+	mask = shfile_get_umask(&psh->fdtab);
+
+	if ((ap = *psh->argptr) == NULL) {
+		if (symbolic_mode) {
+			char u[4], g[4], o[4];
+
+			i = 0;
+			if ((mask & S_IRUSR) == 0)
+				u[i++] = 'r';
+			if ((mask & S_IWUSR) == 0)
+				u[i++] = 'w';
+			if ((mask & S_IXUSR) == 0)
+				u[i++] = 'x';
+			u[i] = '\0';
+
+			i = 0;
+			if ((mask & S_IRGRP) == 0)
+				g[i++] = 'r';
+			if ((mask & S_IWGRP) == 0)
+				g[i++] = 'w';
+			if ((mask & S_IXGRP) == 0)
+				g[i++] = 'x';
+			g[i] = '\0';
+
+			i = 0;
+			if ((mask & S_IROTH) == 0)
+				o[i++] = 'r';
+			if ((mask & S_IWOTH) == 0)
+				o[i++] = 'w';
+			if ((mask & S_IXOTH) == 0)
+				o[i++] = 'x';
+			o[i] = '\0';
+
+			out1fmt(psh, "u=%s,g=%s,o=%s\n", u, g, o);
+		} else {
+			out1fmt(psh, "%.4o\n", mask);
+		}
+	} else {
+		if (isdigit((unsigned char)*ap)) {
+			mask = 0;
+			do {
+				if (*ap >= '8' || *ap < '0')
+					error(psh, "Illegal number: %s", argv[1]);
+				mask = (mask << 3) + (*ap - '0');
+			} while (*++ap != '\0');
+			shfile_set_umask(&psh->fdtab, mask);
+		} else {
+			void *set;
+
+			INTOFF;
+			if ((set = kash_setmode(psh, ap)) != 0) {
+				mask = kash_getmode(set, ~mask & 0777);
+				ckfree(psh, set);
+			}
+			INTON;
+			if (!set)
+				error(psh, "Illegal mode: %s", ap);
+
+			shfile_set_umask(&psh->fdtab, ~mask & 0777);
+		}
+	}
+	return 0;
+}
+
+/*
+ * ulimit builtin
+ *
+ * This code, originally by Doug Gwyn, Doug Kingston, Eric Gisin, and
+ * Michael Rendell was ripped from pdksh 5.0.8 and hacked for use with
+ * ash by J.T. Conklin.
+ *
+ * Public domain.
+ */
+
+struct limits {
+	const char *name;
+	int	cmd;
+	int	factor;	/* multiply by to get rlim_{cur,max} values */
+	char	option;
+};
+
+static const struct limits limits[] = {
+#ifdef RLIMIT_CPU
+	{ "time(seconds)",		RLIMIT_CPU,	   1, 't' },
+#endif
+#ifdef RLIMIT_FSIZE
+	{ "file(blocks)",		RLIMIT_FSIZE,	 512, 'f' },
+#endif
+#ifdef RLIMIT_DATA
+	{ "data(kbytes)",		RLIMIT_DATA,	1024, 'd' },
+#endif
+#ifdef RLIMIT_STACK
+	{ "stack(kbytes)",		RLIMIT_STACK,	1024, 's' },
+#endif
+#ifdef  RLIMIT_CORE
+	{ "coredump(blocks)",		RLIMIT_CORE,	 512, 'c' },
+#endif
+#ifdef RLIMIT_RSS
+	{ "memory(kbytes)",		RLIMIT_RSS,	1024, 'm' },
+#endif
+#ifdef RLIMIT_MEMLOCK
+	{ "locked memory(kbytes)",	RLIMIT_MEMLOCK, 1024, 'l' },
+#endif
+#ifdef RLIMIT_NPROC
+	{ "process(processes)",		RLIMIT_NPROC,      1, 'p' },
+#endif
+#ifdef RLIMIT_NOFILE
+	{ "nofiles(descriptors)",	RLIMIT_NOFILE,     1, 'n' },
+#endif
+#ifdef RLIMIT_VMEM
+	{ "vmemory(kbytes)",		RLIMIT_VMEM,	1024, 'v' },
+#endif
+#ifdef RLIMIT_SWAP
+	{ "swap(kbytes)",		RLIMIT_SWAP,	1024, 'w' },
+#endif
+#ifdef RLIMIT_SBSIZE
+	{ "sbsize(bytes)",		RLIMIT_SBSIZE,	   1, 'b' },
+#endif
+	{ (char *) 0,			0,		   0,  '\0' }
+};
+
+int
+ulimitcmd(shinstance *psh, int argc, char **argv)
+{
+	int	c;
+	shrlim_t val = 0;
+	enum { SOFT = 0x1, HARD = 0x2 }
+			how = SOFT | HARD;
+	const struct limits	*l;
+	int		set, all = 0;
+	int		optc, what;
+	shrlimit	limit;
+
+	what = 'f';
+	while ((optc = nextopt(psh, "HSabtfdsmcnpl")) != '\0')
+		switch (optc) {
+		case 'H':
+			how = HARD;
+			break;
+		case 'S':
+			how = SOFT;
+			break;
+		case 'a':
+			all = 1;
+			break;
+		default:
+			what = optc;
+		}
+
+	for (l = limits; l->name && l->option != what; l++)
+		;
+	if (!l->name)
+		error(psh, "internal error (%c)", what);
+
+	set = *psh->argptr ? 1 : 0;
+	if (set) {
+		char *p = *psh->argptr;
+
+		if (all || psh->argptr[1])
+			error(psh, "too many arguments");
+		if (strcmp(p, "unlimited") == 0)
+			val = RLIM_INFINITY;
+		else {
+			val = (shrlim_t) 0;
+
+			while ((c = *p++) >= '0' && c <= '9')
+			{
+				shrlim_t const prev = val;
+				val = (val * 10) + (long)(c - '0');
+				if (val < prev)
+					break;
+			}
+			if (c)
+				error(psh, "bad number");
+			val *= l->factor;
+		}
+	}
+	if (all) {
+		for (l = limits; l->name; l++) {
+			sh_getrlimit(psh, l->cmd, &limit);
+			if (how & SOFT)
+				val = limit.rlim_cur;
+			else if (how & HARD)
+				val = limit.rlim_max;
+
+			out1fmt(psh, "%-20s ", l->name);
+			if (val == RLIM_INFINITY)
+				out1fmt(psh, "unlimited\n");
+			else
+			{
+				val /= l->factor;
+				out1fmt(psh, "%lld\n", (long long) val);
+			}
+		}
+		return 0;
+	}
+
+	sh_getrlimit(psh, l->cmd, &limit);
+	if (set) {
+		if (how & HARD)
+			limit.rlim_max = val;
+		if (how & SOFT)
+			limit.rlim_cur = val;
+		if (sh_setrlimit(psh, l->cmd, &limit) < 0)
+			error(psh, "error setting limit (%s)", sh_strerror(psh, errno));
+	} else {
+		if (how & SOFT)
+			val = limit.rlim_cur;
+		else if (how & HARD)
+			val = limit.rlim_max;
+
+		if (val == RLIM_INFINITY)
+			out1fmt(psh, "unlimited\n");
+		else
+		{
+			val /= l->factor;
+			out1fmt(psh, "%lld\n", (long long) val);
+		}
+	}
+	return 0;
+}
diff --git a/src/kash/miscbltin.h b/src/kash/miscbltin.h
new file mode 100644
index 0000000..af30411
--- /dev/null
+++ b/src/kash/miscbltin.h
@@ -0,0 +1,31 @@
+/*	$NetBSD: miscbltin.h,v 1.3 2003/08/21 17:57:53 christos Exp $	*/
+
+/*
+ * Copyright (c) 1997 Christos Zoulas.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+int readcmd(struct shinstance *, int, char **);
+int umaskcmd(struct shinstance *, int, char **);
+int ulimitcmd(struct shinstance *, int, char **);
diff --git a/src/kash/mkbuiltins b/src/kash/mkbuiltins
new file mode 100755
index 0000000..e304034
--- /dev/null
+++ b/src/kash/mkbuiltins
@@ -0,0 +1,136 @@
+#!/bin/sh -
+#	$NetBSD: mkbuiltins,v 1.21 2004/06/06 07:03:11 christos Exp $
+#
+# Copyright (c) 1991, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)mkbuiltins	8.2 (Berkeley) 5/4/95
+
+havehist=1
+if [ "X$1" = "X-h" ]; then
+	havehist=0
+	shift
+fi
+
+shell=$1
+builtins=$2
+objdir=$3
+
+havejobs=0
+if grep '^#define JOBS[	 ]*1' ${shell} > /dev/null
+then
+	havejobs=1
+fi
+
+exec <$builtins 3> ${objdir}/builtins.c 4> ${objdir}/builtins.h
+
+echo '/*
+ * This file was generated by the mkbuiltins program.
+ */
+
+#include "shell.h"
+#include "builtins.h"
+
+const struct builtincmd builtincmd[] = {
+' >&3
+
+echo '/*
+ * This file was generated by the mkbuiltins program.
+ */
+
+#include "shtypes.h"
+
+struct builtincmd {
+      const char *name;
+      int (*builtin)(shinstance *, int, char **);
+};
+
+extern const struct builtincmd builtincmd[];
+extern const struct builtincmd splbltincmd[];
+
+' >&4
+
+specials=
+
+while read line
+do
+	set -- $line
+	[ -z "$1" ] && continue
+	case "$1" in
+	\#if*|\#def*|\#end*)
+		echo $line >&3
+		echo $line >&4
+		continue
+		;;
+	esac
+	l1="${line###}"
+	[ "$l1" != "$line" ] && continue
+
+
+	func=$1
+	shift
+	[ x"$1" = x'-j' ] && {
+		[ $havejobs = 0 ] && continue
+		shift
+	}
+	[ x"$1" = x'-h' ] && {
+		[ $havehist = 0 ] && continue
+		shift
+	}
+	echo 'int '"$func"'(shinstance *, int, char **);' >&4
+	while
+		[ $# != 0 -a "$1" != '#' ]
+	do
+		[ "$1" = '-s' ] && {
+			specials="$specials $2 $func"
+			shift 2
+			continue;
+		}
+		[ "$1" = '-u' ] && shift
+		echo '	{ "'$1'",	'"$func"' },' >&3
+		shift
+	done
+done
+
+echo '	{ 0, 0 },' >&3
+echo '};' >&3
+echo >&3
+echo 'const struct builtincmd splbltincmd[] = {' >&3
+
+set -- $specials
+while
+	[ $# != 0 ]
+do
+	echo '	{ "'$1'",	'"$2"' },' >&3
+	shift 2
+done
+
+echo '	{ 0, 0 },' >&3
+echo "};" >&3
diff --git a/src/kash/mkinit.sh b/src/kash/mkinit.sh
new file mode 100755
index 0000000..0bf4bed
--- /dev/null
+++ b/src/kash/mkinit.sh
@@ -0,0 +1,199 @@
+#! /bin/sh
+#	$NetBSD: mkinit.sh,v 1.2 2004/06/15 23:09:54 dsl Exp $
+
+# Copyright (c) 2003 The NetBSD Foundation, Inc.
+# All rights reserved.
+#
+# This code is derived from software contributed to The NetBSD Foundation
+# by David Laight.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. Neither the name of The NetBSD Foundation nor the names of its
+#    contributors may be used to endorse or promote products derived
+#    from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+srcs="$*"
+
+nl='
+'
+openparen='('
+backslash='\'
+
+includes=' "shell.h" "mystring.h" "init.h" '
+defines=
+decles=
+event_init=
+event_reset=
+event_shellproc=
+
+for src in $srcs; do
+	exec <$src
+	decnl="$nl"
+	while IFS=; read -r line; do
+		[ "$line" = x ]
+		case "$line " in
+		INIT["{ 	"]* ) event=init;;
+		RESET["{ 	"]* ) event=reset;;
+		SHELLPROC["{ 	"]* ) event=shellproc;;
+		INCLUDE[\ \	]* )
+			IFS=' 	'
+			set -- $line
+			# ignore duplicates
+			[ "${includes}" != "${includes%* $2 }" ] && continue
+			includes="$includes$2 "
+			continue
+			;;
+		MKINIT\  )
+			# struct declaration
+			decles="$decles$nl"
+			while
+				read -r line
+				decles="${decles}${line}${nl}"
+				[ "$line" != "};" ]
+			do
+				:
+			done
+			decnl="$nl"
+			continue
+			;;
+		MKINIT["{ 	"]* )
+			# strip initialiser
+			def=${line#MKINIT}
+			comment="${def#*;}"
+			def="${def%;$comment}"
+			def="${def%%=*}"
+			def="${def% }"
+			decles="${decles}${decnl}extern${def};${comment}${nl}"
+			decnl=
+			continue
+			;;
+		\#define[\ \	]* )
+			IFS=' 	'
+			set -- $line
+			# Ignore those with arguments
+			[ "$2" = "${2##*$openparen}" ] || continue
+			# and multiline definitions
+			[ "$line" = "${line%$backslash}" ] || continue
+			defines="${defines}#undef  $2${nl}${line}${nl}"
+			continue
+			;;
+		* ) continue;;
+		esac
+		# code for events
+		ev="${nl}      /* from $src: */${nl}      {${nl}"
+		while
+			read -r line
+			[ "$line" != "}" ]
+		do
+			# The C program indented by an extra 6 chars using
+			# tabs then spaces. I need to compare the output :-(
+			indent=6
+			while
+				l=${line#	}
+				[ "$l" != "$line" ]
+			do
+				indent=$(($indent + 8))
+				line="$l"
+			done
+			while
+				l=${line# }
+				[ "$l" != "$line" ]
+			do
+				indent=$(($indent + 1))
+				line="$l"
+			done
+			[ -z "$line" -o "$line" != "${line###}" ] && indent=0
+			while
+				[ $indent -ge 8 ]
+			do
+				ev="$ev	"
+				indent="$(($indent - 8))"
+			done
+			while
+				[ $indent -gt 0 ]
+			do
+				ev="$ev "
+				indent="$(($indent - 1))"
+			done
+			ev="${ev}${line}${nl}"
+		done
+		ev="${ev}      }${nl}"
+		eval event_$event=\"\$event_$event\$ev\"
+	done
+done
+
+exec >init.c.tmp
+
+echo "/*"
+echo " * This file was generated by the mkinit program."
+echo " */"
+echo
+
+IFS=' '
+for f in $includes; do
+	echo "#include $f"
+done
+echo "#include \"shinstance.h\""
+echo "#include \"nodes.h\""
+
+echo
+echo
+echo
+echo "$defines"
+echo
+echo "$decles"
+echo
+echo
+echo "/*"
+echo " * Initialization code."
+echo " */"
+echo
+echo "void"
+echo "init(shinstance *psh) {"
+echo "${event_init%$nl}"
+echo "}"
+echo
+echo
+echo
+echo "/*"
+echo " * This routine is called when an error or an interrupt occurs in an"
+echo " * interactive shell and control is returned to the main command loop."
+echo " */"
+echo
+echo "void"
+echo "reset(shinstance *psh) {"
+echo "${event_reset%$nl}"
+echo "}"
+echo
+echo
+echo
+echo "/*"
+echo " * This routine is called to initialize the shell to run a shell procedure."
+echo " */"
+echo
+echo "void"
+echo "initshellproc(shinstance *psh) {"
+echo "${event_shellproc%$nl}"
+echo "}"
+
+exec >&-
+mv init.c.tmp init.c
diff --git a/src/kash/mknodes.sh b/src/kash/mknodes.sh
new file mode 100755
index 0000000..f11fc2e
--- /dev/null
+++ b/src/kash/mknodes.sh
@@ -0,0 +1,232 @@
+#! /bin/sh
+#	$NetBSD: mknodes.sh,v 1.1 2004/01/16 23:24:38 dsl Exp $
+
+# Copyright (c) 2003 The NetBSD Foundation, Inc.
+# All rights reserved.
+#
+# This code is derived from software contributed to The NetBSD Foundation
+# by David Laight.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. Neither the name of The NetBSD Foundation nor the names of its
+#    contributors may be used to endorse or promote products derived
+#    from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+nodetypes=$1
+nodes_pat=$2
+objdir="$3"
+
+exec <$nodetypes
+exec >$objdir/nodes.h.tmp
+
+echo "/*"
+echo " * This file was generated by mknodes.sh"
+echo " */"
+echo
+
+tagno=0
+while IFS=; read -r line; do
+	line="${line%%#*}"
+	IFS=' 	'
+	set -- $line
+	IFS=
+	[ -z "$2" ] && continue
+	case "$line" in
+	[" 	"]* )
+		IFS=' '
+		[ $field = 0 ] && struct_list="$struct_list $struct"
+		eval field_${struct}_$field=\"\$*\"
+		eval numfld_$struct=\$field
+		field=$(($field + 1))
+		;;
+	* )
+		define=$1
+		struct=$2
+		echo "#define $define $tagno"
+		tagno=$(($tagno + 1))
+		eval define_$struct=\"\$define_$struct \$define\"
+		struct_define="$struct_define $struct"
+		field=0
+		;;
+	esac
+done
+
+echo
+
+## @todo inconsistent indentation here.
+IFS=' '
+for struct in $struct_list; do
+	echo
+	echo
+	echo "struct $struct {"
+        echo "#ifdef KASH_SEPARATE_PARSER_ALLOCATOR"
+        echo "	struct pstack_block *pblock;"
+        echo "#endif"
+	field=0
+	while
+		eval line=\"\$field_${struct}_$field\"
+		field=$(($field + 1))
+		[ -n "$line" ]
+	do
+		IFS=' '
+		set -- $line
+		name=$1
+		case $2 in
+		nodeptr ) type="union node *";;
+		nodelist ) type="struct nodelist *";;
+		string ) type="char *";;
+		int ) type="int ";;
+		* ) name=; shift 2; type="$*";;
+		esac
+		echo "	$type$name;"
+	done
+	echo "};"
+done
+
+echo
+echo
+echo "union node {"
+echo "#ifdef KASH_SEPARATE_PARSER_ALLOCATOR"
+echo "# ifdef __GNUC__"
+echo "	__extension__"
+echo "# endif"
+echo "	struct {"
+echo "		struct pstack_block *pblock;"
+echo "		int type;"
+echo "	};"
+echo "#else"
+echo "	int type;"
+echo "#endif"
+for struct in $struct_list; do
+	echo "	struct $struct $struct;"
+done
+echo "};"
+echo
+echo
+echo "struct nodelist {"
+echo "	struct nodelist *next;"
+echo "	union node *n;"
+echo "};"
+echo
+echo
+echo "union node *copyfunc(struct shinstance *, union node *);"
+echo "void freefunc(struct shinstance *, union node *);"
+
+exec <$nodes_pat
+exec >$objdir/nodes.c.tmp
+mv -f $objdir/nodes.h.tmp $objdir/nodes.h || exit 1
+
+echo "/*"
+echo " * This file was generated by mknodes.sh"
+echo " */"
+echo
+
+while IFS=; read -r line; do
+	IFS=' 	'
+	set -- $line
+	IFS=
+	case "$1" in
+	'%SIZES' )
+		echo "static const short nodesize[$tagno] = {"
+		IFS=' '
+		for struct in $struct_define; do
+			echo "      SHELL_ALIGN(sizeof (struct $struct)),"
+		done
+		echo "};"
+		;;
+	'%CALCSIZE' )
+		echo "      if (n == NULL)"
+		echo "	    return;"
+		echo "      funcblocksize += nodesize[n->type];"
+		echo "      switch (n->type) {"
+		IFS=' '
+		for struct in $struct_list; do
+			eval defines=\"\$define_$struct\"
+			for define in $defines; do
+				echo "      case $define:"
+			done
+			eval field=\$numfld_$struct
+			while
+				[ $field != 0 ]
+			do
+				eval line=\"\$field_${struct}_$field\"
+				field=$(($field - 1))
+				IFS=' '
+				set -- $line
+				name=$1
+				cl=")"
+				case $2 in
+				nodeptr ) fn=calcsize;;
+				nodelist ) fn=sizenodelist;;
+				string ) fn="funcstringsize += strlen"
+					cl=") + 1";;
+				* ) continue;;
+				esac
+				echo "	    ${fn}(n->$struct.$name${cl};"
+			done
+			echo "	    break;"
+		done
+		echo "      };"
+		;;
+	'%COPY' )
+		echo "      if (n == NULL)"
+		echo "	    return NULL;"
+		echo "      new = funcblock;"
+		echo "      funcblock = (char *) funcblock + nodesize[n->type];"
+		echo "      switch (n->type) {"
+		IFS=' '
+		for struct in $struct_list; do
+			eval defines=\"\$define_$struct\"
+			for define in $defines; do
+				echo "      case $define:"
+			done
+			eval field=\$numfld_$struct
+			while
+				[ $field != 0 ]
+			do
+				eval line=\"\$field_${struct}_$field\"
+				field=$(($field - 1))
+				IFS=' '
+				set -- $line
+				name=$1
+				case $2 in
+				nodeptr ) fn="copynode(";;
+				nodelist ) fn="copynodelist(";;
+				string ) fn="nodesavestr(";;
+				int ) fn=;;
+				temp )  echo "unexpected 'temp' node type" >&2; exit 2;;
+				* ) continue;;
+				esac
+				f="$struct.$name"
+				echo "	    new->$f = ${fn}n->$f${fn:+)};"
+			done
+			echo "	    break;"
+		done
+		echo "      };"
+		echo "      new->type = n->type;"
+		;;
+	* ) echo "$line";;
+	esac
+done
+
+exec >/dev/null
+mv -f $objdir/nodes.c.tmp $objdir/nodes.c || exit 1
diff --git a/src/kash/mktokens b/src/kash/mktokens
new file mode 100755
index 0000000..74d2a95
--- /dev/null
+++ b/src/kash/mktokens
@@ -0,0 +1,98 @@
+#!/bin/sh -
+#	$NetBSD: mktokens,v 1.10 2003/08/22 11:22:23 agc Exp $
+#
+# Copyright (c) 1991, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)mktokens	8.1 (Berkeley) 5/31/93
+
+# The following is a list of tokens.  The second column is nonzero if the
+# token marks the end of a list.  The third column is the name to print in
+# error messages.
+
+if [ -z "$TMPDIR" ]; then
+    TMPDIR="/tmp"
+    export TMPDIR
+fi
+F="$TMPDIR/ka$$"
+echo $F
+cat > $F <<\!
+TEOF	1	end of file
+TNL	0	newline
+TSEMI	0	";"
+TBACKGND 0	"&"
+TAND	0	"&&"
+TOR	0	"||"
+TPIPE	0	"|"
+TLP	0	"("
+TRP	1	")"
+TENDCASE 1	";;"
+TENDBQUOTE 1	"`"
+TREDIR	0	redirection
+TWORD	0	word
+TIF	0	"if"
+TTHEN	1	"then"
+TELSE	1	"else"
+TELIF	1	"elif"
+TFI	1	"fi"
+TWHILE	0	"while"
+TUNTIL	0	"until"
+TFOR	0	"for"
+TDO	1	"do"
+TDONE	1	"done"
+TBEGIN	0	"{"
+TEND	1	"}"
+TCASE	0	"case"
+TESAC	1	"esac"
+TNOT	0	"!"
+!
+nl=`wc -l $F`
+exec > token.h
+awk '{print "#define " $1 " " NR-1}' $F
+echo '
+/* Array indicating which tokens mark the end of a list */
+const char tokendlist[] = {'
+awk '{print "\t" $2 ","}' $F
+echo '};
+
+const char *const tokname[] = {'
+sed -e 's/"/\\"/g' \
+    -e 's/[^	 ]*[	 ][	 ]*[^	 ]*[	 ][	 ]*\(.*\)/	"\1",/' \
+    $F
+echo '};
+'
+sed 's/"//g' $F | awk '
+/TIF/{print "#define KWDOFFSET " NR-1; print "";
+      print "const char *const parsekwd[] = {"}
+/TIF/,/neverfound/{print "	\"" $3 "\","}'
+echo '	0
+};'
+
+rm $F
diff --git a/src/kash/myhistedit.h b/src/kash/myhistedit.h
new file mode 100644
index 0000000..f1803b5
--- /dev/null
+++ b/src/kash/myhistedit.h
@@ -0,0 +1,49 @@
+/*	$NetBSD: myhistedit.h,v 1.10 2003/08/07 09:05:35 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)myhistedit.h	8.2 (Berkeley) 5/4/95
+ */
+
+#ifndef SMALL
+#include <histedit.h>
+
+/*extern History *hist;
+extern EditLine *el;*/
+#endif
+/*extern int displayhist;*/
+
+void histedit(struct shinstance *);
+void sethistsize(struct shinstance *, const char *);
+void setterm(struct shinstance *, const char *);
+int histcmd(struct shinstance *, int, char **);
+int inputrc(struct shinstance *, int, char **);
+int not_fcnumber(struct shinstance *, char *);
+int str_to_event(struct shinstance *, const char *, int);
+
diff --git a/src/kash/mystring.c b/src/kash/mystring.c
new file mode 100644
index 0000000..0888b89
--- /dev/null
+++ b/src/kash/mystring.c
@@ -0,0 +1,132 @@
+/*	$NetBSD: mystring.c,v 1.16 2003/08/07 09:05:35 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)mystring.c	8.2 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: mystring.c,v 1.16 2003/08/07 09:05:35 agc Exp $");
+#endif /* not lint */
+#endif
+
+/*
+ * String functions.
+ *
+ *	equal(s1, s2)		Return true if strings are equal.
+ *	scopy(from, to)		Copy a string.
+ *	scopyn(from, to, n)	Like scopy, but checks for overflow.
+ *	number(s)		Convert a string of digits to an integer.
+ *	is_number(s)		Return true if s is a string of digits.
+ */
+
+#include <stdlib.h>
+#include "shell.h"
+#include "syntax.h"
+#include "error.h"
+#include "mystring.h"
+
+
+char nullstr[1];		/* zero length string */
+
+/*
+ * equal - #defined in mystring.h
+ */
+
+/*
+ * scopy - #defined in mystring.h
+ */
+
+
+/*
+ * scopyn - copy a string from "from" to "to", truncating the string
+ *		if necessary.  "To" is always nul terminated, even if
+ *		truncation is performed.  "Size" is the size of "to".
+ */
+
+void
+scopyn(const char *from, char *to, ssize_t size)
+{
+
+	while (--size > 0) {
+		if ((*to++ = *from++) == '\0')
+			return;
+	}
+	*to = '\0';
+}
+
+
+/*
+ * prefix -- see if pfx is a prefix of string.
+ */
+
+int
+prefix(const char *pfx, const char *string)
+{
+	while (*pfx) {
+		if (*pfx++ != *string++)
+			return 0;
+	}
+	return 1;
+}
+
+
+/*
+ * Convert a string of digits to an integer, printing an error message on
+ * failure.
+ */
+
+int
+number(shinstance *psh, const char *s)
+{
+
+	if (! is_number(s))
+		error(psh, "Illegal number: %s", s);
+	return atoi(s);
+}
+
+
+
+/*
+ * Check for a valid number.  This should be elsewhere.
+ */
+
+int
+is_number(const char *p)
+{
+	do {
+		if (! is_digit(*p))
+			return 0;
+	} while (*++p != '\0');
+	return 1;
+}
diff --git a/src/kash/mystring.h b/src/kash/mystring.h
new file mode 100644
index 0000000..6819df4
--- /dev/null
+++ b/src/kash/mystring.h
@@ -0,0 +1,55 @@
+/*	$NetBSD: mystring.h,v 1.11 2003/08/07 09:05:35 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)mystring.h	8.2 (Berkeley) 5/4/95
+ */
+
+#ifndef ___mystring_h
+#define ___mystring_h
+
+#include <string.h>
+#include "shtypes.h" /* ssize_t */
+
+void scopyn(const char *, char *, ssize_t);
+int prefix(const char *, const char *);
+int number(struct shinstance *, const char *);
+int is_number(const char *);
+#if !defined(RT_OS_FREEBSD) && !defined(RT_OS_NETBSD) && !defined(RT_OS_OPENBSD) && !defined(RT_OS_OS2) \
+ && /* newer darwin: */ !defined(strlcpy)
+size_t strlcpy(char *dst, const char *src, size_t siz);
+#endif
+
+#define equal(s1, s2)	(strcmp(s1, s2) == 0)
+#define scopy(s1, s2)	((void)strcpy(s2, s1))
+
+#endif
diff --git a/src/kash/nodes.c.pat b/src/kash/nodes.c.pat
new file mode 100644
index 0000000..69d4240
--- /dev/null
+++ b/src/kash/nodes.c.pat
@@ -0,0 +1,185 @@
+/*	$NetBSD: nodes.c.pat,v 1.12 2004/06/15 22:57:27 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)nodes.c.pat	8.2 (Berkeley) 5/4/95
+ */
+
+#include <stdlib.h>
+/*
+ * Routine for dealing with parsed shell commands.
+ */
+
+#include "shell.h"
+#include "nodes.h"
+#include "memalloc.h"
+#include "machdep.h"
+#include "mystring.h"
+#include "shinstance.h"
+
+#ifndef KASH_SEPARATE_PARSER_ALLOCATOR
+
+size_t  funcblocksize;		/* size of structures in function */
+size_t  funcstringsize;		/* size of strings in node */
+pointer funcblock;		/* block to allocate function from */
+char   *funcstring;		/* block to allocate strings from */
+
+%SIZES
+
+
+STATIC void calcsize(union node *);
+STATIC void sizenodelist(struct nodelist *);
+STATIC union node *copynode(union node *);
+STATIC struct nodelist *copynodelist(struct nodelist *);
+STATIC char *nodesavestr(char *);
+
+#endif /* !KASH_SEPARATE_PARSER_ALLOCATOR */
+
+
+/*
+ * Make a copy of a parse tree.
+ */
+
+union node *
+copyfunc(psh, n)
+    struct shinstance *psh;
+	union node *n;
+{
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	if (n != NULL) {
+		unsigned refs = pstackretain(n->pblock);
+		TRACE2((psh, "copyfunc: %p - %u refs\n", n->pblock, refs)); K_NOREF(refs);
+	}
+	return n;
+#else
+	if (n == NULL)
+		return NULL;
+	funcblocksize = 0;
+	funcstringsize = 0;
+	calcsize(n);
+	funcblock = ckmalloc(psh, funcblocksize + funcstringsize);
+	funcstring = (char *) funcblock + funcblocksize;
+	return copynode(n);
+#endif
+}
+
+#ifndef KASH_SEPARATE_PARSER_ALLOCATOR
+
+STATIC void
+calcsize(n)
+	union node *n;
+{
+	%CALCSIZE
+}
+
+
+
+STATIC void
+sizenodelist(lp)
+	struct nodelist *lp;
+{
+	while (lp) {
+		funcblocksize += SHELL_ALIGN(sizeof(struct nodelist));
+		calcsize(lp->n);
+		lp = lp->next;
+	}
+}
+
+
+
+STATIC union node *
+copynode(n)
+	union node *n;
+{
+	union node *new;
+
+	%COPY
+	return new;
+}
+
+
+STATIC struct nodelist *
+copynodelist(lp)
+	struct nodelist *lp;
+{
+	struct nodelist *start;
+	struct nodelist **lpp;
+
+	lpp = &start;
+	while (lp) {
+		*lpp = funcblock;
+		funcblock = (char *) funcblock +
+		    SHELL_ALIGN(sizeof(struct nodelist));
+		(*lpp)->n = copynode(lp->n);
+		lp = lp->next;
+		lpp = &(*lpp)->next;
+	}
+	*lpp = NULL;
+	return start;
+}
+
+
+
+STATIC char *
+nodesavestr(s)
+	char   *s;
+{
+	register char *p = s;
+	register char *q = funcstring;
+	char   *rtn = funcstring;
+
+	while ((*q++ = *p++) != 0)
+		continue;
+	funcstring = q;
+	return rtn;
+}
+
+#endif /* !KASH_SEPARATE_PARSER_ALLOCATOR */
+
+
+/*
+ * Free a parse tree.
+ */
+
+void
+freefunc(psh, n)
+        shinstance *psh;
+	union node *n;
+{
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	if (n)
+		pstackrelease(psh, n->pblock, "freefunc");
+#else
+	if (n)
+		ckfree(psh, n);
+#endif
+}
diff --git a/src/kash/nodetypes b/src/kash/nodetypes
new file mode 100644
index 0000000..d1fb2c3
--- /dev/null
+++ b/src/kash/nodetypes
@@ -0,0 +1,141 @@
+#	$NetBSD: nodetypes,v 1.12 2003/08/22 11:22:23 agc Exp $
+# Copyright (c) 1991, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)nodetypes	8.2 (Berkeley) 5/4/95
+
+# This file describes the nodes used in parse trees.  Unindented lines
+# contain a node type followed by a structure tag.  Subsequent indented
+# lines specify the fields of the structure.  Several node types can share
+# the same structure, in which case the fields of the structure should be
+# specified only once.
+#
+# A field of a structure is described by the name of the field followed
+# by a type.  The currently implemented types are:
+#	nodeptr - a pointer to a node
+#	nodelist - a pointer to a list of nodes
+#	string - a pointer to a nul terminated string
+#	int - an integer
+#	other - any type that can be copied by assignment
+# The last two types should be followed by the text of a C declaration for
+# the field.
+
+NSEMI nbinary			# two commands separated by a semicolon
+	type	  int
+	ch1	  nodeptr		# the first child
+	ch2	  nodeptr		# the second child
+
+NCMD ncmd			# a simple command
+	type	  int
+	backgnd	  int			# set to run command in background
+	args	  nodeptr		# the arguments
+	redirect  nodeptr		# list of file redirections
+
+NPIPE npipe			# a pipeline
+	type	  int
+	backgnd	  int			# set to run pipeline in background
+	cmdlist	  nodelist		# the commands in the pipeline
+
+NREDIR nredir			# redirection (of a complex command)
+	type	  int
+	n	  nodeptr		# the command
+	redirect  nodeptr		# list of file redirections
+
+NBACKGND nredir			# run command in background
+NSUBSHELL nredir		# run command in a subshell
+
+NAND nbinary			# the && operator
+NOR nbinary			# the || operator
+
+NIF nif				# the if statement.  Elif clauses are handled
+	type	  int		    # using multiple if nodes.
+	test	  nodeptr		# if test
+	ifpart	  nodeptr		# then ifpart
+	elsepart  nodeptr		# else elsepart
+
+NWHILE nbinary			# the while statement.  First child is the test
+NUNTIL nbinary			# the until statement
+
+NFOR nfor			# the for statement
+	type	  int
+	args	  nodeptr		# for var in args
+	body	  nodeptr		# do body; done
+	var	  string		# the for variable
+
+NCASE ncase			# a case statement
+	type	  int
+	expr	  nodeptr		# the word to switch on
+	cases	  nodeptr		# the list of cases (NCLIST nodes)
+
+NCLIST nclist			# a case
+	type	  int
+	next	  nodeptr		# the next case in list
+	pattern	  nodeptr		# list of patterns for this case
+	body	  nodeptr		# code to execute for this case
+
+
+NDEFUN narg			# define a function.  The "next" field contains
+				# the body of the function.
+
+NARG narg			# represents a word
+	type	  int
+	next	  nodeptr		# next word in list
+	text	  string		# the text of the word
+	backquote nodelist		# list of commands in back quotes
+
+NTO nfile			# fd> fname
+NCLOBBER nfile			# fd>| fname
+NFROM nfile			# fd< fname
+NFROMTO nfile			# fd<> fname
+NAPPEND nfile			# fd>> fname
+	type	  int
+	fd	  int			# file descriptor being redirected (must match ndup)
+	next	  nodeptr		# next redirection in list         (must match ndup)
+	fname	  nodeptr		# file name, in a NARG node
+
+NTOFD ndup			# fd<&dupfd
+NFROMFD ndup			# fd>&dupfd
+	type	  int
+	fd	  int			# file descriptor being redirected (must match nfile)
+	next	  nodeptr		# next redirection in list         (must match nfile)
+	dupfd	  int			# file descriptor to duplicate
+	vname	  nodeptr		# file name if fd>&$var
+
+
+NHERE nhere			# fd<<\!
+NXHERE nhere			# fd<<!
+	type	  int
+	fd	  int			# file descriptor being redirected (must match nfile)
+	next	  nodeptr		# next redirection in list         (must match nfile)
+	doc	  nodeptr		# input to command (NARG node)
+
+NNOT nnot			# ! command  (actually pipeline)
+	type	int
+	com	nodeptr
diff --git a/src/kash/options.c b/src/kash/options.c
new file mode 100644
index 0000000..ed99af5
--- /dev/null
+++ b/src/kash/options.c
@@ -0,0 +1,635 @@
+/*	$NetBSD: options.c,v 1.38 2005/03/20 21:38:17 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)options.c	8.2 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: options.c,v 1.38 2005/03/20 21:38:17 dsl Exp $");
+#endif /* not lint */
+#endif
+
+#include <stdlib.h>
+
+#include "shell.h"
+#define DEFINE_OPTIONS
+#include "options.h"
+#undef DEFINE_OPTIONS
+#include "nodes.h"	/* for other header files */
+#include "eval.h"
+#include "jobs.h"
+#include "input.h"
+#include "output.h"
+#include "trap.h"
+#include "var.h"
+#include "memalloc.h"
+#include "error.h"
+#include "mystring.h"
+#ifndef SMALL
+# include "myhistedit.h"
+#endif
+#include "show.h"
+#include "shinstance.h"
+
+//char *arg0;			/* value of $0 */
+//struct shparam shellparam;	/* current positional parameters */
+//char **argptr;			/* argument list for builtin commands */
+//char *optionarg;		/* set by nextopt (like getopt) */
+//char *optptr;			/* used by nextopt */
+
+//char *minusc;			/* argument to -c option */
+
+
+STATIC void options(shinstance *, int);
+STATIC void minus_o(shinstance *, char *, int);
+STATIC void setoption(shinstance *, int, int);
+STATIC int getopts(shinstance *, char *, char *, char **, char ***, char **);
+
+#ifndef SH_FORKED_MODE
+void
+subshellinitoptions(shinstance *psh, shinstance *inherit)
+{
+    unsigned i;
+    int left;
+    const char *arg;
+    memcpy(&psh->optlist[0], &inherit->optlist[0], sizeof(psh->optlist));
+
+    /** @todo opimize: skip this when executing builtins. */
+    /* Whether the subshell uses argptr/shellparam/arg0 or replaces them depends
+       on whether the shell will execute a builtin command or not.
+
+       orgargv is already set by the shinstance.c core code, scan the original
+       again and update arg0, shellparm, argptr and optptr. */
+
+    /* arg0 is either something from orgargv, or in the EXSHELLPROC case a
+       separate allocation that we need to dupe here. The (new) arg0malloc
+       flag indicates which. */
+    i = 0;
+    psh->arg0malloc = inherit->arg0malloc;
+    if (inherit->arg0malloc) {
+	psh->arg0 = savestr(psh, inherit->arg0);
+    } else {
+	while ((arg = inherit->orgargv[i]) != NULL) {
+	    if (inherit->arg0 == arg) {
+		psh->arg0 = psh->orgargv[i];
+		break;
+	    }
+	    i++;
+	}
+	kHlpAssert(psh->arg0 != NULL);
+    }
+
+    /* eval.h's commandname is same as arg0 when set unless we're doing a dot-include. */
+    if (inherit->commandname) {
+	if (inherit->commandname == inherit->arg0) {
+	    psh->commandname = psh->arg0;
+	} else {
+	    psh->commandname = savestr(psh, inherit->commandname);
+	    psh->commandnamemalloc = 1;
+	}
+    }
+
+    /* shellparam is either pointing right after arg0 in orgargv, though it may
+       also be a separately allocated thing (see setparam), or pointing to the
+       arguments of a shell function we're executing (see eval.c).  All in all,
+       it's simpler if we just copy the whole darn thing, ASSUMING no
+       modifications will be made that are needed to be visible elsewhere.
+       */
+    psh->shellparam.malloc = 1;
+    psh->shellparam.reset  = inherit->shellparam.reset;
+    psh->shellparam.nparam = left = inherit->shellparam.nparam;
+    kHlpAssert(left >= 0);
+    psh->shellparam.p = (char **)ckmalloc(psh, (left + 1) * sizeof(psh->shellparam.p[0]));
+    psh->shellparam.p[left] = NULL;
+    while (left-- > 0) {
+	arg = inherit->shellparam.p[left];
+	psh->shellparam.p[left] = savestr(psh, arg);
+    }
+
+    /* The shellparam.optnext member is either NULL or points to a 'p' entry. */
+    if (inherit->shellparam.optnext) {
+	size_t idx = (size_t)(inherit->shellparam.optnext - inherit->shellparam.p);
+	kHlpAssert(idx <= inherit->shellparam.nparam);
+	if (idx <= inherit->shellparam.nparam)
+	    psh->shellparam.optnext = &psh->shellparam.p[idx];
+    }
+
+    /* The shellparam.optptr member is either NULL or points within argument
+       prior to shellparam.optnext.  We can leave it as NULL if at the EOS. */
+    if (inherit->shellparam.optptr && *inherit->shellparam.optptr != '\0') {
+	intptr_t idx;
+	if (!inherit->shellparam.optnext || inherit->shellparam.optnext == inherit->shellparam.p)
+	    idx = (intptr_t)(inherit->shellparam.nparam - 1);
+	else {
+	    idx = (intptr_t)(inherit->shellparam.optnext - inherit->shellparam.p - 1);
+	    if (idx > inherit->shellparam.nparam)
+		idx = inherit->shellparam.nparam - 1;
+	}
+	while (idx >= 0) {
+	    size_t arglen, off;
+	    arg = inherit->shellparam.p[idx];
+	    arglen = strlen(arg);
+	    off = (size_t)(inherit->shellparam.optptr - arg);
+	    if (off < arglen) {
+		psh->shellparam.optptr = psh->shellparam.p[idx] + off;
+		break;
+	    }
+	    off--;
+	}
+	kHlpAssert(psh->shellparam.optptr != NULL);
+    }
+
+    /* minusc:    only used in main.c, so not applicable to subshells. */
+    /* optionarg: only used by callers of nextopt, so not relevant when forking subhells. */
+}
+#endif /* SH_FORKED_MODE */
+
+
+/*
+ * Process the shell command line arguments.
+ */
+
+void
+procargs(shinstance *psh, int argc, char **argv)
+{
+	int i;
+
+	psh->argptr = argv;
+	if (argc > 0)
+		psh->argptr++;
+	for (i = 0; i < NOPTS; i++)
+		psh->optlist[i].val = 2;
+	options(psh, 1);
+	if (*psh->argptr == NULL && psh->minusc == NULL)
+		sflag(psh) = 1;
+	if (iflag(psh) == 2 && sflag(psh) == 1 && shfile_isatty(&psh->fdtab, 0) && shfile_isatty(&psh->fdtab, 1))
+		iflag(psh) = 1;
+	if (mflag(psh) == 2)
+		mflag(psh) = iflag(psh);
+	for (i = 0; i < NOPTS; i++)
+		if (psh->optlist[i].val == 2)
+			psh->optlist[i].val = 0;
+#if DEBUG == 2
+	debug(psh) = 1;
+#endif
+	psh->commandnamemalloc = 0;
+	psh->arg0malloc = 0;
+	psh->arg0 = argv[0];
+	if (sflag(psh) == 0 && psh->minusc == NULL) {
+		psh->commandname = argv[0];
+		psh->arg0 = *psh->argptr++;
+		setinputfile(psh, psh->arg0, 0);
+		psh->commandname = psh->arg0;
+	}
+	/* POSIX 1003.2: first arg after -c cmd is $0, remainder $1... */
+	if (psh->minusc != NULL) {
+		if (psh->argptr == NULL || *psh->argptr == NULL)
+			error(psh, "Bad -c option");
+		psh->minusc = *psh->argptr++;
+		if (*psh->argptr != 0)
+			psh->arg0 = *psh->argptr++;
+	}
+
+	psh->shellparam.p = psh->argptr;
+	psh->shellparam.reset = 1;
+	/* kHlpAssert(shellparam.malloc == 0 && shellparam.nparam == 0); */
+	while (*psh->argptr) {
+		psh->shellparam.nparam++;
+		psh->argptr++;
+	}
+	optschanged(psh);
+}
+
+
+void
+optschanged(shinstance *psh)
+{
+	setinteractive(psh, iflag(psh));
+#ifndef SMALL
+	histedit(psh);
+#endif
+	setjobctl(psh, mflag(psh));
+}
+
+/*
+ * Process shell options.  The global variable argptr contains a pointer
+ * to the argument list; we advance it past the options.
+ */
+
+STATIC void
+options(shinstance *psh, int cmdline)
+{
+	static char empty[] = "";
+	char *p;
+	int val;
+	int c;
+
+	if (cmdline)
+		psh->minusc = NULL;
+	while ((p = *psh->argptr) != NULL) {
+		psh->argptr++;
+		if ((c = *p++) == '-') {
+			val = 1;
+                        if (p[0] == '\0' || (p[0] == '-' && p[1] == '\0')) {
+                                if (!cmdline) {
+                                        /* "-" means turn off -x and -v */
+                                        if (p[0] == '\0')
+                                                xflag(psh) = vflag(psh) = 0;
+                                        /* "--" means reset params */
+                                        else if (*psh->argptr == NULL)
+						setparam(psh, psh->argptr);
+                                }
+				break;	  /* "-" or  "--" terminates options */
+			}
+		} else if (c == '+') {
+			val = 0;
+		} else {
+			psh->argptr--;
+			break;
+		}
+		while ((c = *p++) != '\0') {
+			if (c == 'c' && cmdline) {
+				/* command is after shell args*/
+				psh->minusc = empty;
+			} else if (c == 'o') {
+				minus_o(psh, *psh->argptr, val);
+				if (*psh->argptr)
+					psh->argptr++;
+			} else {
+				setoption(psh, c, val);
+			}
+		}
+	}
+}
+
+static void
+set_opt_val(shinstance *psh, int i, int val)
+{
+	int j;
+	int flag;
+
+	if (val && (flag = psh->optlist[i].opt_set)) {
+		/* some options (eg vi/emacs) are mutually exclusive */
+		for (j = 0; j < NOPTS; j++)
+		    if (psh->optlist[j].opt_set == flag)
+			psh->optlist[j].val = 0;
+	}
+	psh->optlist[i].val = val;
+#ifdef DEBUG
+	if (&psh->optlist[i].val == &debug(psh))
+		opentrace(psh);
+#endif
+}
+
+STATIC void
+minus_o(shinstance *psh, char *name, int val)
+{
+	int i;
+
+	if (name == NULL) {
+		out1str(psh, "Current option settings\n");
+		for (i = 0; i < NOPTS; i++)
+			out1fmt(psh, "%-16s%s\n", psh->optlist[i].name,
+				psh->optlist[i].val ? "on" : "off");
+	} else {
+		for (i = 0; i < NOPTS; i++)
+			if (equal(name, psh->optlist[i].name)) {
+				set_opt_val(psh, i, val);
+				return;
+			}
+		error(psh, "Illegal option -o %s", name);
+	}
+}
+
+
+STATIC void
+setoption(shinstance *psh, int flag, int val)
+{
+	int i;
+
+	for (i = 0; i < NOPTS; i++)
+		if (psh->optlist[i].letter == flag) {
+			set_opt_val(psh, i, val);
+			return;
+		}
+	error(psh, "Illegal option -%c", flag);
+	/* NOTREACHED */
+}
+
+
+
+#ifdef mkinit
+INCLUDE "options.h"
+
+INIT {
+	memcpy(&psh->optlist[0], &ro_optlist[0], sizeof(psh->optlist));
+}
+
+SHELLPROC {
+	int i;
+
+	for (i = 0; psh->optlist[i].name; i++)
+		psh->optlist[i].val = 0;
+# if DEBUG == 2
+	debug(psh) = 1;
+# endif
+	optschanged(psh);
+}
+#endif
+
+
+/*
+ * Set the shell parameters.
+ */
+
+void
+setparam(shinstance *psh, char **argv)
+{
+	char **newparam;
+	char **ap;
+	int nparam;
+
+	for (nparam = 0 ; argv[nparam] ; nparam++)
+		continue;
+	ap = newparam = ckmalloc(psh, (nparam + 1) * sizeof *ap);
+	while (*argv) {
+		*ap++ = savestr(psh, *argv++);
+	}
+	*ap = NULL;
+	freeparam(psh, &psh->shellparam);
+	psh->shellparam.malloc = 1;
+	psh->shellparam.nparam = nparam;
+	psh->shellparam.p = newparam;
+	psh->shellparam.optnext = NULL;
+}
+
+
+/*
+ * Free the list of positional parameters.
+ */
+
+void
+freeparam(shinstance *psh, volatile struct shparam *param)
+{
+	char **ap;
+
+	if (param->malloc) {
+		for (ap = param->p ; *ap ; ap++)
+			ckfree(psh, *ap);
+		ckfree(psh, param->p);
+	}
+}
+
+
+
+/*
+ * The shift builtin command.
+ */
+
+int
+shiftcmd(shinstance *psh, int argc, char **argv)
+{
+	int n;
+	char **ap1, **ap2;
+
+	n = 1;
+	if (argc > 1)
+		n = number(psh, argv[1]);
+	if (n > psh->shellparam.nparam)
+		error(psh, "can't shift that many");
+	INTOFF;
+	psh->shellparam.nparam -= n;
+	for (ap1 = psh->shellparam.p ; --n >= 0 ; ap1++) {
+		if (psh->shellparam.malloc)
+			ckfree(psh, *ap1);
+	}
+	ap2 = psh->shellparam.p;
+	while ((*ap2++ = *ap1++) != NULL);
+	psh->shellparam.optnext = NULL;
+	INTON;
+	return 0;
+}
+
+
+
+/*
+ * The set command builtin.
+ */
+
+int
+setcmd(shinstance *psh, int argc, char **argv)
+{
+	if (argc == 1)
+		return showvars(psh, 0, 0, 1);
+	INTOFF;
+	options(psh, 0);
+	optschanged(psh);
+	if (*psh->argptr != NULL) {
+		setparam(psh, psh->argptr);
+	}
+	INTON;
+	return 0;
+}
+
+
+void
+getoptsreset(shinstance *psh, const char *value)
+{
+	if (number(psh, value) == 1) {
+		psh->shellparam.optnext = NULL;
+		psh->shellparam.reset = 1;
+	}
+}
+
+/*
+ * The getopts builtin.  Shellparam.optnext points to the next argument
+ * to be processed.  Shellparam.optptr points to the next character to
+ * be processed in the current argument.  If shellparam.optnext is NULL,
+ * then it's the first time getopts has been called.
+ */
+
+int
+getoptscmd(shinstance *psh, int argc, char **argv)
+{
+	char **optbase;
+
+	if (argc < 3)
+		error(psh, "usage: getopts optstring var [arg]");
+	else if (argc == 3)
+		optbase = psh->shellparam.p;
+	else
+		optbase = &argv[3];
+
+	if (psh->shellparam.reset == 1) {
+		psh->shellparam.optnext = optbase;
+		psh->shellparam.optptr = NULL;
+		psh->shellparam.reset = 0;
+	}
+
+	return getopts(psh, argv[1], argv[2], optbase, &psh->shellparam.optnext,
+		       &psh->shellparam.optptr);
+}
+
+STATIC int
+getopts(shinstance *psh, char *optstr, char *optvar, char **optfirst, char ***optnext, char **optpptr)
+{
+	char *p, *q;
+	char c = '?';
+	int done = 0;
+	int ind = 0;
+	int err = 0;
+	char s[12];
+
+	if ((p = *optpptr) == NULL || *p == '\0') {
+		/* Current word is done, advance */
+		if (*optnext == NULL)
+			return 1;
+		p = **optnext;
+		if (p == NULL || *p != '-' || *++p == '\0') {
+atend:
+			ind = (int)(*optnext - optfirst + 1);
+			*optnext = NULL;
+			p = NULL;
+			done = 1;
+			goto out;
+		}
+		(*optnext)++;
+		if (p[0] == '-' && p[1] == '\0')	/* check for "--" */
+			goto atend;
+	}
+
+	c = *p++;
+	for (q = optstr; *q != c; ) {
+		if (*q == '\0') {
+			if (optstr[0] == ':') {
+				s[0] = c;
+				s[1] = '\0';
+				err |= setvarsafe(psh, "OPTARG", s, 0);
+			} else {
+				outfmt(&psh->errout, "Illegal option -%c\n", c);
+				(void) unsetvar(psh, "OPTARG", 0);
+			}
+			c = '?';
+			goto bad;
+		}
+		if (*++q == ':')
+			q++;
+	}
+
+	if (*++q == ':') {
+		if (*p == '\0' && (p = **optnext) == NULL) {
+			if (optstr[0] == ':') {
+				s[0] = c;
+				s[1] = '\0';
+				err |= setvarsafe(psh, "OPTARG", s, 0);
+				c = ':';
+			} else {
+				outfmt(&psh->errout, "No arg for -%c option\n", c);
+				(void) unsetvar(psh, "OPTARG", 0);
+				c = '?';
+			}
+			goto bad;
+		}
+
+		if (p == **optnext)
+			(*optnext)++;
+		err |= setvarsafe(psh, "OPTARG", p, 0);
+		p = NULL;
+	} else
+		err |= setvarsafe(psh, "OPTARG", "", 0);
+	ind = (int)(*optnext - optfirst + 1);
+	goto out;
+
+bad:
+	ind = 1;
+	*optnext = NULL;
+	p = NULL;
+out:
+	*optpptr = p;
+	fmtstr(s, sizeof(s), "%d", ind);
+	err |= setvarsafe(psh, "OPTIND", s, VNOFUNC);
+	s[0] = c;
+	s[1] = '\0';
+	err |= setvarsafe(psh, optvar, s, 0);
+	if (err) {
+		*optnext = NULL;
+		*optpptr = NULL;
+		output_flushall(psh);
+		exraise(psh, EXERROR);
+	}
+	return done;
+}
+
+/*
+ * XXX - should get rid of.  have all builtins use getopt(3).  the
+ * library getopt must have the BSD extension static variable "optreset"
+ * otherwise it can't be used within the shell safely.
+ *
+ * Standard option processing (a la getopt) for builtin routines.  The
+ * only argument that is passed to nextopt is the option string; the
+ * other arguments are unnecessary.  It return the character, or '\0' on
+ * end of input.
+ */
+
+int
+nextopt(shinstance *psh, const char *optstring)
+{
+	char *p;
+	const char *q;
+	char c;
+
+	if ((p = psh->optptr) == NULL || *p == '\0') {
+		p = *psh->argptr;
+		if (p == NULL || *p != '-' || *++p == '\0')
+			return '\0';
+		psh->argptr++;
+		if (p[0] == '-' && p[1] == '\0')	/* check for "--" */
+			return '\0';
+	}
+	c = *p++;
+	for (q = optstring ; *q != c ; ) {
+		if (*q == '\0')
+			error(psh, "Illegal option -%c", c);
+		if (*++q == ':')
+			q++;
+	}
+	if (*++q == ':') {
+		if (*p == '\0' && (p = *psh->argptr++) == NULL)
+			error(psh, "No arg for -%c option", c);
+		psh->optionarg = p;
+		p = NULL;
+	}
+	psh->optptr = p;
+	return c;
+}
diff --git a/src/kash/options.h b/src/kash/options.h
new file mode 100644
index 0000000..dd8caaa
--- /dev/null
+++ b/src/kash/options.h
@@ -0,0 +1,145 @@
+/*	$NetBSD: options.h,v 1.18 2005/05/07 19:52:17 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)options.h	8.2 (Berkeley) 5/4/95
+ */
+
+#ifndef ___options_h
+#define ___options_h
+
+struct shparam {
+	int nparam;		/* # of positional parameters (without $0) */
+	unsigned char malloc;	/* if parameter list dynamically allocated */
+	unsigned char reset;	/* if getopts has been reset */
+	char **p;		/* parameter list */
+	char **optnext;		/* next parameter to be processed by getopts */
+	char *optptr;		/* used by getopts */
+};
+
+
+struct optent {
+	const char *name;		/* for set -o <name> */
+	const char letter;		/* set [+/-]<letter> and $- */
+	const char opt_set;		/* mutually exclusive option set */
+	char val;			/* value of <letter>flag */
+};
+
+/* Those marked [U] are required by posix, but have no effect! */
+
+#ifdef DEBUG
+# define NOPTS 20
+#else
+# define NOPTS 19
+#endif
+
+#ifdef DEFINE_OPTIONS
+# define DEF_OPTS(name, letter, opt_set) {name, letter, opt_set, 0},
+const struct optent ro_optlist[NOPTS + 1] = {
+#else
+# define DEF_OPTS(name, letter, opt_set)
+#endif
+#define DEF_OPT(name,letter) DEF_OPTS(name, letter, 0)
+
+DEF_OPT( "errexit",	'e' )	/* exit on error */
+#define eflag(psh) (psh)->optlist[0].val
+DEF_OPT( "noglob",	'f' )	/* no pathname expansion */
+#define fflag(psh) (psh)->optlist[1].val
+DEF_OPT( "ignoreeof",	'I' )	/* do not exit on EOF */
+#define Iflag(psh) (psh)->optlist[2].val
+DEF_OPT( "interactive",'i' )	/* interactive shell */
+#define iflag(psh) (psh)->optlist[3].val
+DEF_OPT( "monitor",	'm' )	/* job control */
+#define mflag(psh) (psh)->optlist[4].val
+DEF_OPT( "noexec",	'n' )	/* [U] do not exec commands */
+#define nflag(psh) (psh)->optlist[5].val
+DEF_OPT( "stdin",	's' )	/* read from stdin */
+#define sflag(psh) (psh)->optlist[6].val
+DEF_OPT( "xtrace",	'x' )	/* trace after expansion */
+#define xflag(psh) (psh)->optlist[7].val
+DEF_OPT( "verbose",	'v' )	/* trace read input */
+#define vflag(psh) (psh)->optlist[8].val
+DEF_OPTS( "vi",		'V', 'V' )	/* vi style editing */
+#define Vflag(psh) (psh)->optlist[9].val
+DEF_OPTS( "emacs",	'E', 'V' )	/* emacs style editing */
+#define	Eflag(psh) (psh)->optlist[10].val
+DEF_OPT( "noclobber",	'C' )	/* do not overwrite files with > */
+#define	Cflag(psh) (psh)->optlist[11].val
+DEF_OPT( "allexport",	'a' )	/* export all variables */
+#define	aflag(psh) (psh)->optlist[12].val
+DEF_OPT( "notify",	'b' )	/* [U] report completion of background jobs */
+#define	bflag(psh) (psh)->optlist[13].val
+DEF_OPT( "nounset",	'u' )	/* error expansion of unset variables */
+#define	uflag(psh) (psh)->optlist[14].val
+DEF_OPT( "quietprofile", 'q' )
+#define	qflag(psh) (psh)->optlist[15].val
+DEF_OPT( "nolog",	0 )	/* [U] no functon defs in command history */
+#define	nolog(psh) (psh)->optlist[16].val
+DEF_OPT( "cdprint",	0 )	/* always print result of cd */
+#define	cdprint(psh) (psh)->optlist[17].val
+DEF_OPT( "tabcomplete",	0 )	/* <tab> causes filename expansion */
+#define	tabcomplete(psh) (psh)->optlist[18].val
+#ifdef DEBUG
+DEF_OPT( "debug",	0 )	/* enable debug prints */
+#define	debug(psh) (psh)->optlist[19].val
+#endif
+
+#ifdef DEFINE_OPTIONS
+	{ 0, 0, 0, 0 },
+};
+#else
+extern const struct optent ro_optlist[];
+#endif
+#define sizeof_optlist (NOPTS * sizeof(struct optent))
+
+
+/*extern char *minusc;*/		/* argument to -c option */
+/*extern char *arg0;*/		/* $0 */
+/*extern struct shparam shellparam;*/  /* $@ */
+/*extern char **argptr;*/		/* argument list for builtin commands */
+/*extern char *optionarg;*/		/* set by nextopt */
+/*extern char *optptr;*/		/* used by nextopt */
+
+#ifndef SH_FORKED_MODE
+void subshellinitoptions(struct shinstance *, struct shinstance *);
+#endif
+void procargs(struct shinstance *, int, char **);
+void optschanged(struct shinstance *);
+void setparam(struct shinstance *, char **);
+void freeparam(struct shinstance *, volatile struct shparam *);
+int shiftcmd(struct shinstance *, int, char **);
+int setcmd(struct shinstance *, int, char **);
+int getoptscmd(struct shinstance *, int, char **);
+int nextopt(struct shinstance *, const char *);
+void getoptsreset(struct shinstance *, const char *);
+
+#endif
diff --git a/src/kash/output.c b/src/kash/output.c
new file mode 100644
index 0000000..142feb5
--- /dev/null
+++ b/src/kash/output.c
@@ -0,0 +1,502 @@
+/*	$NetBSD: output.c,v 1.28 2003/08/07 09:05:36 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)output.c	8.2 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: output.c,v 1.28 2003/08/07 09:05:36 agc Exp $");
+#endif /* not lint */
+#endif
+
+/*
+ * Shell output routines.  We use our own output routines because:
+ *	When a builtin command is interrupted we have to discard
+ *		any pending output.
+ *	When a builtin command appears in back quotes, we want to
+ *		save the output of the command in a region obtained
+ *		via malloc, rather than doing a fork and reading the
+ *		output of the command via a pipe.
+ *	Our output routines may be smaller than the stdio routines.
+ */
+
+#include <sys/types.h>
+
+#include <stdio.h>	/* defines BUFSIZ */
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+
+#include "shell.h"
+#include "syntax.h"
+#include "output.h"
+#include "memalloc.h"
+#include "error.h"
+#include "shinstance.h"
+
+//#define OUTBUFSIZ BUFSIZ
+#define BLOCK_OUT -2		/* output to a fixed block of memory */
+//#define MEM_OUT -3		/* output to dynamically allocated memory */
+#define OUTPUT_ERR 01		/* error occurred on output */
+
+
+//struct output output = {NULL, 0, NULL, OUTBUFSIZ, 1, 0};
+//struct output errout = {NULL, 0, NULL, 100, 2, 0};
+//struct output memout = {NULL, 0, NULL, 0, MEM_OUT, 0};
+//struct output *out1 = &output;
+//struct output *out2 = &errout;
+
+
+
+#ifdef mkinit
+
+INCLUDE "output.h"
+INCLUDE "memalloc.h"
+
+RESET {
+	psh->out1 = &psh->output;
+	psh->out2 = &psh->errout;
+	if (psh->memout.buf != NULL) {
+		ckfree(psh, psh->memout.buf);
+		psh->memout.buf = NULL;
+		psh->memout.nextc = NULL;
+	}
+}
+
+#endif
+
+
+#ifdef notdef	/* no longer used */
+/*
+ * Set up an output file to write to memory rather than a file.
+ */
+
+void
+open_mem(char *block, int length, struct output *file)
+{
+	file->nextc = block;
+	file->nleft = --length;
+	file->fd = BLOCK_OUT;
+	file->flags = 0;
+	file->psh = psh;
+}
+#endif
+
+
+void
+out1str(shinstance *psh, const char *p)
+{
+	outstr(p, psh->out1);
+}
+
+
+void
+out2str(shinstance *psh, const char *p)
+{
+	outstr(p, psh->out2);
+}
+
+
+void
+outstr(const char *p, struct output *file)
+{
+	while (*p)
+		outc(*p++, file);
+	if (file->psh && file == file->psh->out2)
+		flushout(file);
+}
+
+
+char out_junk[16];
+
+
+void
+emptyoutbuf(struct output *dest)
+{
+	int offset;
+	shinstance *psh = dest->psh;
+
+	if (dest->fd == BLOCK_OUT) {
+		dest->nextc = out_junk;
+		dest->nleft = sizeof out_junk;
+		dest->flags |= OUTPUT_ERR;
+	} else if (dest->buf == NULL) {
+		INTOFF;
+		dest->buf = ckmalloc(psh, dest->bufsize);
+		dest->nextc = dest->buf;
+		dest->nleft = dest->bufsize;
+		INTON;
+	} else if (dest->fd == MEM_OUT) {
+		offset = dest->bufsize;
+		INTOFF;
+		dest->bufsize <<= 1;
+		dest->buf = ckrealloc(psh, dest->buf, dest->bufsize);
+		dest->nleft = dest->bufsize - offset;
+		dest->nextc = dest->buf + offset;
+		INTON;
+	} else {
+		flushout(dest);
+	}
+	dest->nleft--;
+}
+
+
+void
+output_flushall(shinstance *psh)
+{
+	flushout(&psh->output);
+	flushout(&psh->errout);
+}
+
+
+void
+flushout(struct output *dest)
+{
+
+	if (dest->buf == NULL || dest->nextc == dest->buf || dest->fd < 0)
+		return;
+	if (xwrite(dest->psh, dest->fd, dest->buf, dest->nextc - dest->buf) < 0)
+		dest->flags |= OUTPUT_ERR;
+	dest->nextc = dest->buf;
+	dest->nleft = dest->bufsize;
+}
+
+
+void
+freestdout(shinstance *psh)
+{
+	INTOFF;
+	if (psh->output.buf) {
+		ckfree(psh, psh->output.buf);
+		psh->output.buf = NULL;
+		psh->output.nextc = NULL;
+		psh->output.nleft = 0;
+	}
+	INTON;
+}
+
+
+void
+outfmt(struct output *file, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	doformat(file, fmt, ap);
+	va_end(ap);
+}
+
+
+void
+out1fmt(shinstance *psh, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	doformat(psh->out1, fmt, ap);
+	va_end(ap);
+}
+
+void
+dprintf(shinstance *psh, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	doformat(psh->out2, fmt, ap);
+	va_end(ap);
+	flushout(psh->out2);
+}
+
+void
+fmtstr(char *outbuf, size_t length, const char *fmt, ...)
+{
+	va_list ap;
+	struct output strout;
+
+	va_start(ap, fmt);
+	strout.nextc = outbuf;
+	strout.nleft = (int)length;
+	strout.fd = BLOCK_OUT;
+	strout.flags = 0;
+        strout.psh = NULL;
+	doformat(&strout, fmt, ap);
+	outc('\0', &strout);
+	if (strout.flags & OUTPUT_ERR)
+		outbuf[length - 1] = '\0';
+	va_end(ap);
+}
+
+/*
+ * Formatted output.  This routine handles a subset of the printf formats:
+ * - Formats supported: d, u, o, p, X, s, and c.
+ * - The x format is also accepted but is treated like X.
+ * - The l, ll and q modifiers are accepted.
+ * - The - and # flags are accepted; # only works with the o format.
+ * - Width and precision may be specified with any format except c.
+ * - An * may be given for the width or precision.
+ * - The obsolete practice of preceding the width with a zero to get
+ *   zero padding is not supported; use the precision field.
+ * - A % may be printed by writing %% in the format string.
+ */
+
+#define TEMPSIZE 32
+
+#ifdef BSD4_4
+#define HAVE_VASPRINTF 1
+#endif
+
+void
+doformat(struct output *dest, const char *f, va_list ap)
+{
+#ifdef HAVE_VASPRINTF
+	char *s;
+
+	vasprintf(&s, f, ap);
+	outstr(s, dest);
+	free(s);
+#else	/* !HAVE_VASPRINTF */
+	static const char digit_lower[] = "0123456789abcdef";
+	static const char digit_upper[] = "0123456789ABCDEF";
+	const char *digit;
+	char c;
+	char temp[TEMPSIZE];
+	int flushleft;
+	int sharp;
+	int width;
+	int prec;
+	int islong;
+	int isquad;
+	char *p;
+	int sign;
+	int64_t l;
+	uint64_t num;
+	unsigned base;
+	int len;
+	int size;
+	int pad;
+
+	while ((c = *f++) != '\0') {
+		if (c != '%') {
+			outc(c, dest);
+			continue;
+		}
+		flushleft = 0;
+		sharp = 0;
+		width = 0;
+		prec = -1;
+		islong = 0;
+		isquad = 0;
+		for (;;) {
+			if (*f == '-')
+				flushleft++;
+			else if (*f == '#')
+				sharp++;
+			else
+				break;
+			f++;
+		}
+		if (*f == '*') {
+			width = va_arg(ap, int);
+			f++;
+		} else {
+			while (is_digit(*f)) {
+				width = 10 * width + digit_val(*f++);
+			}
+		}
+		if (*f == '.') {
+			if (*++f == '*') {
+				prec = va_arg(ap, int);
+				f++;
+			} else {
+				prec = 0;
+				while (is_digit(*f)) {
+					prec = 10 * prec + digit_val(*f++);
+				}
+			}
+		}
+		if (*f == 'l') {
+			f++;
+			if (*f == 'l') {
+				isquad++;
+				f++;
+			} else
+				islong++;
+		} else if (*f == 'q') {
+			isquad++;
+			f++;
+		}
+#ifdef _MSC_VER  /* for SHPID_PRI / KI64_PRI */
+		else if (*f == 'I' && f[1] == '6' && f[2] == '4') {
+			isquad++;
+			f += 3;
+		}
+#endif
+		digit = digit_upper;
+		switch (*f) {
+		case 'd':
+			if (isquad)
+				l = va_arg(ap, int64_t);
+			else if (islong)
+				l = va_arg(ap, long);
+			else
+				l = va_arg(ap, int);
+			sign = 0;
+			num = l;
+			if (l < 0) {
+				num = -l;
+				sign = 1;
+			}
+			base = 10;
+			goto number;
+		case 'u':
+			base = 10;
+			goto uns_number;
+		case 'o':
+			base = 8;
+			goto uns_number;
+		case 'p':
+			outc('0', dest);
+			outc('x', dest);
+			/*FALLTHROUGH*/
+		case 'x':
+			/* we don't implement 'x'; treat like 'X' */
+			digit = digit_lower;
+			/*FALLTHROUGH*/
+		case 'X':
+			base = 16;
+uns_number:	  /* an unsigned number */
+			sign = 0;
+			if (isquad)
+				num = va_arg(ap, uint64_t);
+			else if (islong)
+				num = va_arg(ap, unsigned long);
+			else
+				num = va_arg(ap, unsigned int);
+number:		  /* process a number */
+			p = temp + TEMPSIZE - 1;
+			*p = '\0';
+			while (num) {
+				*--p = digit[num % base];
+				num /= base;
+			}
+			len = (int)((temp + TEMPSIZE - 1) - p);
+			if (prec < 0)
+				prec = 1;
+			if (sharp && *f == 'o' && prec <= len)
+				prec = len + 1;
+			pad = 0;
+			if (width) {
+				size = len;
+				if (size < prec)
+					size = prec;
+				size += sign;
+				pad = width - size;
+				if (flushleft == 0) {
+					while (--pad >= 0)
+						outc(' ', dest);
+				}
+			}
+			if (sign)
+				outc('-', dest);
+			prec -= len;
+			while (--prec >= 0)
+				outc('0', dest);
+			while (*p)
+				outc(*p++, dest);
+			while (--pad >= 0)
+				outc(' ', dest);
+			break;
+		case 's':
+			p = va_arg(ap, char *);
+			pad = 0;
+			if (width) {
+				len = (int)strlen(p);
+				if (prec >= 0 && len > prec)
+					len = prec;
+				pad = width - len;
+				if (flushleft == 0) {
+					while (--pad >= 0)
+						outc(' ', dest);
+				}
+			}
+			prec++;
+			while (--prec != 0 && *p)
+				outc(*p++, dest);
+			while (--pad >= 0)
+				outc(' ', dest);
+			break;
+		case 'c':
+			c = va_arg(ap, int);
+			outc(c, dest);
+			break;
+		default:
+			outc(*f, dest);
+			break;
+		}
+		f++;
+	}
+#endif	/* !HAVE_VASPRINTF */
+}
+
+
+
+/*
+ * Version of write which resumes after a signal is caught.
+ */
+
+int
+xwrite(shinstance *psh, int fd, char *buf, size_t nbytes)
+{
+	int ntry;
+	long i;
+	size_t n;
+
+	n = nbytes;
+	ntry = 0;
+	for (;;) {
+		i = shfile_write(&psh->fdtab, fd, buf, n);
+		if (i > 0) {
+			if ((n -= i) <= 0)
+				return (int)nbytes;
+			buf += i;
+			ntry = 0;
+		} else if (i == 0) {
+			if (++ntry > 10)
+				return (int)(nbytes - n);
+		} else if (errno != EINTR) {
+			return -1;
+		}
+	}
+}
diff --git a/src/kash/output.h b/src/kash/output.h
new file mode 100644
index 0000000..96b60d5
--- /dev/null
+++ b/src/kash/output.h
@@ -0,0 +1,92 @@
+/*	$NetBSD: output.h,v 1.17 2003/08/07 09:05:36 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)output.h	8.2 (Berkeley) 5/4/95
+ */
+
+#ifndef OUTPUT_INCL
+
+#include <stdarg.h>
+
+/* The stupid, stupid, unix specification guys added dprintf to stdio.h!
+   Wonder what kind of weed they were smoking when doing that... */
+#include <stdio.h>
+#undef dprintf
+#define dprintf mydprintf
+
+
+struct output {
+	char *nextc;
+	int nleft;
+	char *buf;
+	int bufsize;
+	short fd;
+	short flags;
+	struct shinstance *psh;
+};
+
+/*extern struct output output;
+extern struct output errout;
+extern struct output memout;
+extern struct output *out1;
+extern struct output *out2;*/
+#if !defined(__GNUC__) && !defined(__attribute__)
+# define __attribute__(a)
+#endif
+
+void open_mem(char *, int, struct output *);
+void out1str(struct shinstance *, const char *);
+void out2str(struct shinstance *, const char *);
+void outstr(const char *, struct output *);
+void emptyoutbuf(struct output *);
+void output_flushall(struct shinstance *);
+void flushout(struct output *);
+void freestdout(struct shinstance *);
+void outfmt(struct output *, const char *, ...)
+    __attribute__((__format__(__printf__,2,3)));
+void out1fmt(struct shinstance *, const char *, ...)
+    __attribute__((__format__(__printf__,2,3)));
+void dprintf(struct shinstance *, const char *, ...)
+    __attribute__((__format__(__printf__,2,3)));
+void fmtstr(char *, size_t, const char *, ...)
+    __attribute__((__format__(__printf__,3,4)));
+void doformat(struct output *, const char *, va_list);
+int xwrite(struct shinstance *, int, char *, size_t);
+int xioctl(struct shinstance *, int, unsigned long, char *);
+
+#define outc(c, file)	(--(file)->nleft < 0? (emptyoutbuf(file), *(file)->nextc++ = (c)) : (*(file)->nextc++ = (c)))
+#define out1c(psh, c)	outc(c, (psh)->out1);
+#define out2c(psh, c)	outc(c, (psh)->out2);
+
+#define OUTPUT_INCL
+#endif
diff --git a/src/kash/parser.c b/src/kash/parser.c
new file mode 100644
index 0000000..f6073ea
--- /dev/null
+++ b/src/kash/parser.c
@@ -0,0 +1,1966 @@
+/*	$NetBSD: parser.c,v 1.59 2005/03/21 20:10:29 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)parser.c	8.7 (Berkeley) 5/16/95";
+#else
+__RCSID("$NetBSD: parser.c,v 1.59 2005/03/21 20:10:29 dsl Exp $");
+#endif /* not lint */
+#endif
+
+#define SH_MEMALLOC_NO_STACK
+#include <stdlib.h>
+
+#include "shell.h"
+#include "parser.h"
+#include "nodes.h"
+#include "expand.h"	/* defines rmescapes() */
+#include "eval.h"	/* defines commandname */
+#include "redir.h"	/* defines copyfd() */
+#include "syntax.h"
+#include "options.h"
+#include "input.h"
+#include "output.h"
+#include "var.h"
+#include "error.h"
+#include "memalloc.h"
+#include "mystring.h"
+#include "alias.h"
+#include "show.h"
+#ifndef SMALL
+# include "myhistedit.h"
+#endif
+#include "cd.h"
+#include "shinstance.h"
+
+/*
+ * Shell command parser.
+ */
+
+#define EOFMARKLEN 79
+
+/* values returned by readtoken */
+#include "token.h"
+
+#define OPENBRACE '{'
+#define CLOSEBRACE '}'
+
+
+struct heredoc {
+	struct heredoc *next;	/* next here document in list */
+	union node *here;		/* redirection node */
+	char *eofmark;		/* string indicating end of input */
+	int striptabs;		/* if set, strip leading tabs */
+};
+
+
+
+//static int noalias = 0;		/* when set, don't handle aliases */
+//struct heredoc *heredoclist;	/* list of here documents to read */
+//int parsebackquote;		/* nonzero if we are inside backquotes */
+//int doprompt;			/* if set, prompt the user */
+//int needprompt;			/* true if interactive and at start of line */
+//int lasttoken;			/* last token read */
+//MKINIT int tokpushback;		/* last token pushed back */
+//char *wordtext;			/* text of last word returned by readtoken */
+//MKINIT int checkkwd;            /* 1 == check for kwds, 2 == also eat newlines */
+//struct nodelist *backquotelist;
+//union node *redirnode;
+//struct heredoc *heredoc;
+//int quoteflag;			/* set if (part of) last token was quoted */
+//int startlinno;			/* line # where last token started */
+
+
+STATIC union node *list(shinstance *, int);
+STATIC union node *andor(shinstance *);
+STATIC union node *pipeline(shinstance *);
+STATIC union node *command(shinstance *);
+STATIC union node *simplecmd(shinstance *, union node **, union node *);
+STATIC union node *makename(shinstance *);
+STATIC void parsefname(shinstance *);
+STATIC void parseheredoc(shinstance *);
+STATIC int peektoken(shinstance *);
+STATIC int readtoken(shinstance *);
+STATIC int xxreadtoken(shinstance *);
+STATIC int readtoken1(shinstance *, int, char const *, char *, int);
+STATIC int noexpand(shinstance *, char *);
+SH_NORETURN_1 STATIC void synexpect(shinstance *, int) SH_NORETURN_2;
+SH_NORETURN_1 STATIC void synerror(shinstance *, const char *) SH_NORETURN_2;
+STATIC void setprompt(shinstance *, int);
+
+
+/*
+ * Read and parse a command.  Returns NEOF on end of file.  (NULL is a
+ * valid parse tree indicating a blank line.)
+ */
+
+union node *
+parsecmd(shinstance *psh, int interact)
+{
+	union node *ret;
+	int t;
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	pstack_block *pst = pstackallocpush(psh);
+#endif
+	TRACE2((psh, "parsecmd(%d)\n", interact));
+
+	psh->tokpushback = 0;
+	psh->doprompt = interact;
+	if (psh->doprompt)
+		setprompt(psh, 1);
+	else
+		setprompt(psh, 0);
+	psh->needprompt = 0;
+	t = readtoken(psh);
+	if (t == TEOF)
+		return NEOF;
+	if (t == TNL)
+		return NULL;
+	psh->tokpushback++;
+	ret = list(psh, 1);
+#if 0 /*def DEBUG*/
+	TRACE2((psh, "parsecmd(%d) returns:\n", interact));
+	showtree(psh, ret);
+#endif
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	pstackmarkdone(pst);
+#endif
+	return ret;
+}
+
+
+STATIC union node *
+list(shinstance *psh, int nlflag)
+{
+	union node *n1, *n2, *n3;
+	int tok;
+
+	psh->checkkwd = 2;
+	if (nlflag == 0 && tokendlist[peektoken(psh)])
+		return NULL;
+	n1 = NULL;
+	for (;;) {
+		n2 = andor(psh);
+		tok = readtoken(psh);
+		if (tok == TBACKGND) {
+			if (n2->type == NCMD || n2->type == NPIPE) {
+				n2->ncmd.backgnd = 1;
+			} else if (n2->type == NREDIR) {
+				n2->type = NBACKGND;
+			} else {
+				n3 = pstallocnode(psh, sizeof (struct nredir));
+				n3->type = NBACKGND;
+				n3->nredir.n = n2;
+				n3->nredir.redirect = NULL;
+				n2 = n3;
+			}
+		}
+		if (n1 == NULL) {
+			n1 = n2;
+		}
+		else {
+			n3 = pstallocnode(psh, sizeof (struct nbinary));
+			n3->type = NSEMI;
+			n3->nbinary.ch1 = n1;
+			n3->nbinary.ch2 = n2;
+			n1 = n3;
+		}
+		switch (tok) {
+		case TBACKGND:
+		case TSEMI:
+			tok = readtoken(psh);
+			/* fall through */
+		case TNL:
+			if (tok == TNL) {
+				parseheredoc(psh);
+				if (nlflag)
+					return n1;
+			} else {
+				psh->tokpushback++;
+			}
+			psh->checkkwd = 2;
+			if (tokendlist[peektoken(psh)])
+				return n1;
+			break;
+		case TEOF:
+			if (psh->heredoclist)
+				parseheredoc(psh);
+			else
+				pungetc(psh);		/* push back EOF on input */
+			return n1;
+		default:
+			if (nlflag)
+				synexpect(psh, -1);
+			psh->tokpushback++;
+			return n1;
+		}
+	}
+}
+
+
+
+STATIC union node *
+andor(shinstance *psh)
+{
+	union node *n1, *n2, *n3;
+	int t;
+
+	n1 = pipeline(psh);
+	for (;;) {
+		if ((t = readtoken(psh)) == TAND) {
+			t = NAND;
+		} else if (t == TOR) {
+			t = NOR;
+		} else {
+			psh->tokpushback++;
+			return n1;
+		}
+		n2 = pipeline(psh);
+		n3 = pstallocnode(psh, sizeof (struct nbinary));
+		n3->type = t;
+		n3->nbinary.ch1 = n1;
+		n3->nbinary.ch2 = n2;
+		n1 = n3;
+	}
+}
+
+
+
+STATIC union node *
+pipeline(shinstance *psh)
+{
+	union node *n1, *n2, *pipenode;
+	struct nodelist *lp, *prev;
+	int negate;
+
+	negate = 0;
+	TRACE((psh, "pipeline: entered\n"));
+	while (readtoken(psh) == TNOT)
+		negate = !negate;
+	psh->tokpushback++;
+	n1 = command(psh);
+	if (readtoken(psh) == TPIPE) {
+		pipenode = pstallocnode(psh, sizeof (struct npipe));
+		pipenode->type = NPIPE;
+		pipenode->npipe.backgnd = 0;
+		lp = pstalloclist(psh);
+		pipenode->npipe.cmdlist = lp;
+		lp->n = n1;
+		do {
+			prev = lp;
+			lp = pstalloclist(psh);
+			lp->n = command(psh);
+			prev->next = lp;
+		} while (readtoken(psh) == TPIPE);
+		lp->next = NULL;
+		n1 = pipenode;
+	}
+	psh->tokpushback++;
+	if (negate) {
+		n2 = pstallocnode(psh, sizeof (struct nnot));
+		n2->type = NNOT;
+		n2->nnot.com = n1;
+		return n2;
+	} else
+		return n1;
+}
+
+
+
+STATIC union node *
+command(shinstance *psh)
+{
+	union node *n1, *n2;
+	union node *ap, **app;
+	union node *cp, **cpp;
+	union node *redir, **rpp;
+	int t, negate = 0;
+
+	psh->checkkwd = 2;
+	redir = NULL;
+	n1 = NULL;
+	rpp = &redir;
+
+	/* Check for redirection which may precede command */
+	while (readtoken(psh) == TREDIR) {
+		*rpp = n2 = psh->redirnode;
+		rpp = &n2->nfile.next;
+		parsefname(psh);
+	}
+	psh->tokpushback++;
+
+	while (readtoken(psh) == TNOT) {
+		TRACE((psh, "command: TNOT recognized\n"));
+		negate = !negate;
+	}
+	psh->tokpushback++;
+
+	switch (readtoken(psh)) {
+	case TIF:
+		n1 = pstallocnode(psh, sizeof (struct nif));
+		n1->type = NIF;
+		n1->nif.test = list(psh, 0);
+		if (readtoken(psh) != TTHEN)
+			synexpect(psh, TTHEN);
+		n1->nif.ifpart = list(psh, 0);
+		n2 = n1;
+		while (readtoken(psh) == TELIF) {
+			n2->nif.elsepart = pstallocnode(psh, sizeof (struct nif));
+			n2 = n2->nif.elsepart;
+			n2->type = NIF;
+			n2->nif.test = list(psh, 0);
+			if (readtoken(psh) != TTHEN)
+				synexpect(psh, TTHEN);
+			n2->nif.ifpart = list(psh, 0);
+		}
+		if (psh->lasttoken == TELSE)
+			n2->nif.elsepart = list(psh, 0);
+		else {
+			n2->nif.elsepart = NULL;
+			psh->tokpushback++;
+		}
+		if (readtoken(psh) != TFI)
+			synexpect(psh, TFI);
+		psh->checkkwd = 1;
+		break;
+	case TWHILE:
+	case TUNTIL: {
+		int got;
+		n1 = pstallocnode(psh, sizeof (struct nbinary));
+		n1->type = (psh->lasttoken == TWHILE)? NWHILE : NUNTIL;
+		n1->nbinary.ch1 = list(psh, 0);
+		if ((got=readtoken(psh)) != TDO) {
+TRACE((psh, "expecting DO got %s %s\n", tokname[got], got == TWORD ? psh->wordtext : ""));
+			synexpect(psh, TDO);
+		}
+		n1->nbinary.ch2 = list(psh, 0);
+		if (readtoken(psh) != TDONE)
+			synexpect(psh, TDONE);
+		psh->checkkwd = 1;
+		break;
+	}
+	case TFOR:
+		if (readtoken(psh) != TWORD || psh->quoteflag || ! goodname(psh->wordtext))
+			synerror(psh, "Bad for loop variable");
+		n1 = pstallocnode(psh, sizeof (struct nfor));
+		n1->type = NFOR;
+		n1->nfor.var = psh->wordtext;
+		if (readtoken(psh) == TWORD && ! psh->quoteflag && equal(psh->wordtext, "in")) {
+			app = &ap;
+			while (readtoken(psh) == TWORD) {
+				n2 = pstallocnode(psh, sizeof (struct narg));
+				n2->type = NARG;
+				n2->narg.text = psh->wordtext;
+				n2->narg.backquote = psh->backquotelist;
+				*app = n2;
+				app = &n2->narg.next;
+			}
+			*app = NULL;
+			n1->nfor.args = ap;
+			if (psh->lasttoken != TNL && psh->lasttoken != TSEMI)
+				synexpect(psh, -1);
+		} else {
+			static char argvars[5] = {CTLVAR, (char)(unsigned char)(VSNORMAL|VSQUOTE),
+								   '@', '=', '\0'};
+			n2 = pstallocnode(psh, sizeof (struct narg));
+			n2->type = NARG;
+			n2->narg.text = argvars;
+			n2->narg.backquote = NULL;
+			n2->narg.next = NULL;
+			n1->nfor.args = n2;
+			/*
+			 * Newline or semicolon here is optional (but note
+			 * that the original Bourne shell only allowed NL).
+			 */
+			if (psh->lasttoken != TNL && psh->lasttoken != TSEMI)
+				psh->tokpushback++;
+		}
+		psh->checkkwd = 2;
+		if ((t = readtoken(psh)) == TDO)
+			t = TDONE;
+		else if (t == TBEGIN)
+			t = TEND;
+		else
+			synexpect(psh, -1);
+		n1->nfor.body = list(psh, 0);
+		if (readtoken(psh) != t)
+			synexpect(psh, t);
+		psh->checkkwd = 1;
+		break;
+	case TCASE:
+		n1 = pstallocnode(psh, sizeof (struct ncase));
+		n1->type = NCASE;
+		if (readtoken(psh) != TWORD)
+			synexpect(psh, TWORD);
+		n1->ncase.expr = n2 = pstallocnode(psh, sizeof (struct narg));
+		n2->type = NARG;
+		n2->narg.text = psh->wordtext;
+		n2->narg.backquote = psh->backquotelist;
+		n2->narg.next = NULL;
+		while (readtoken(psh) == TNL);
+		if (psh->lasttoken != TWORD || ! equal(psh->wordtext, "in"))
+			synerror(psh, "expecting \"in\"");
+		cpp = &n1->ncase.cases;
+		psh->noalias = 1;
+		psh->checkkwd = 2, readtoken(psh);
+		do {
+			*cpp = cp = pstallocnode(psh, sizeof (struct nclist));
+			cp->type = NCLIST;
+			app = &cp->nclist.pattern;
+			for (;;) {
+				*app = ap = pstallocnode(psh, sizeof (struct narg));
+				ap->type = NARG;
+				ap->narg.text = psh->wordtext;
+				ap->narg.backquote = psh->backquotelist;
+				if (psh->checkkwd = 2, readtoken(psh) != TPIPE)
+					break;
+				app = &ap->narg.next;
+				readtoken(psh);
+			}
+			ap->narg.next = NULL;
+			psh->noalias = 0;
+			if (psh->lasttoken != TRP) {
+				synexpect(psh, TRP);
+			}
+			cp->nclist.body = list(psh, 0);
+
+			psh->checkkwd = 2;
+			if ((t = readtoken(psh)) != TESAC) {
+				if (t != TENDCASE) {
+					psh->noalias = 0;
+					synexpect(psh, TENDCASE);
+				} else {
+					psh->noalias = 1;
+					psh->checkkwd = 2;
+					readtoken(psh);
+				}
+			}
+			cpp = &cp->nclist.next;
+		} while(psh->lasttoken != TESAC);
+		psh->noalias = 0;
+		*cpp = NULL;
+		psh->checkkwd = 1;
+		break;
+	case TLP:
+		n1 = pstallocnode(psh, sizeof (struct nredir));
+		n1->type = NSUBSHELL;
+		n1->nredir.n = list(psh, 0);
+		n1->nredir.redirect = NULL;
+		if (readtoken(psh) != TRP)
+			synexpect(psh, TRP);
+		psh->checkkwd = 1;
+		break;
+	case TBEGIN:
+		n1 = list(psh, 0);
+		if (readtoken(psh) != TEND)
+			synexpect(psh, TEND);
+		psh->checkkwd = 1;
+		break;
+	/* Handle an empty command like other simple commands.  */
+	case TSEMI:
+		/*
+		 * An empty command before a ; doesn't make much sense, and
+		 * should certainly be disallowed in the case of `if ;'.
+		 */
+		if (!redir)
+			synexpect(psh, -1);
+		/* FALLTHROUGH */
+	case TAND:
+	case TOR:
+	case TNL:
+	case TEOF:
+	case TWORD:
+	case TRP:
+		psh->tokpushback++;
+		n1 = simplecmd(psh, rpp, redir);
+		goto checkneg;
+	default:
+		synexpect(psh, -1);
+		/* NOTREACHED */
+	}
+
+	/* Now check for redirection which may follow command */
+	while (readtoken(psh) == TREDIR) {
+		*rpp = n2 = psh->redirnode;
+		rpp = &n2->nfile.next;
+		parsefname(psh);
+	}
+	psh->tokpushback++;
+	*rpp = NULL;
+	if (redir) {
+		if (n1->type != NSUBSHELL) {
+			n2 = pstallocnode(psh, sizeof (struct nredir));
+			n2->type = NREDIR;
+			n2->nredir.n = n1;
+			n1 = n2;
+		}
+		n1->nredir.redirect = redir;
+	}
+
+checkneg:
+	if (negate) {
+		n2 = pstallocnode(psh, sizeof (struct nnot));
+		n2->type = NNOT;
+		n2->nnot.com = n1;
+		return n2;
+	}
+	else
+		return n1;
+}
+
+
+STATIC union node *
+simplecmd(shinstance *psh, union node **rpp, union node *redir)
+{
+	union node *args, **app;
+	union node **orig_rpp = rpp;
+	union node *n = NULL, *n2;
+	int negate = 0;
+
+	/* If we don't have any redirections already, then we must reset */
+	/* rpp to be the address of the local redir variable.  */
+	if (redir == 0)
+		rpp = &redir;
+
+	args = NULL;
+	app = &args;
+	/*
+	 * We save the incoming value, because we need this for shell
+	 * functions.  There can not be a redirect or an argument between
+	 * the function name and the open parenthesis.
+	 */
+	orig_rpp = rpp;
+
+	while (readtoken(psh) == TNOT) {
+		TRACE((psh, "command: TNOT recognized\n"));
+		negate = !negate;
+	}
+	psh->tokpushback++;
+
+	for (;;) {
+		if (readtoken(psh) == TWORD) {
+			n = pstallocnode(psh, sizeof (struct narg));
+			n->type = NARG;
+			n->narg.text = psh->wordtext;
+			n->narg.backquote = psh->backquotelist;
+			*app = n;
+			app = &n->narg.next;
+		} else if (psh->lasttoken == TREDIR) {
+			*rpp = n = psh->redirnode;
+			rpp = &n->nfile.next;
+			parsefname(psh);	/* read name of redirection file */
+		} else if (psh->lasttoken == TLP && app == &args->narg.next
+					    && rpp == orig_rpp) {
+			/* We have a function */
+			if (readtoken(psh) != TRP)
+				synexpect(psh, TRP);
+#ifdef notdef
+			if (! goodname(n->narg.text))
+				synerror(psh, "Bad function name");
+#endif
+			n->type = NDEFUN;
+			n->narg.next = command(psh);
+			goto checkneg;
+		} else {
+			psh->tokpushback++;
+			break;
+		}
+	}
+	*app = NULL;
+	*rpp = NULL;
+	n = pstallocnode(psh, sizeof (struct ncmd));
+	n->type = NCMD;
+	n->ncmd.backgnd = 0;
+	n->ncmd.args = args;
+	n->ncmd.redirect = redir;
+
+checkneg:
+	if (negate) {
+		n2 = pstallocnode(psh, sizeof (struct nnot));
+		n2->type = NNOT;
+		n2->nnot.com = n;
+		return n2;
+	}
+	else
+		return n;
+}
+
+STATIC union node *
+makename(shinstance *psh)
+{
+	union node *n;
+
+	n = pstallocnode(psh, sizeof (struct narg));
+	n->type = NARG;
+	n->narg.next = NULL;
+	n->narg.text = psh->wordtext;
+	n->narg.backquote = psh->backquotelist;
+	return n;
+}
+
+void fixredir(shinstance *psh, union node *n, const char *text, int err)
+{
+	TRACE((psh, "Fix redir %s %d\n", text, err));
+	if (!err)
+		n->ndup.vname = NULL;
+
+	if (is_digit(text[0]) && text[1] == '\0')
+		n->ndup.dupfd = digit_val(text[0]);
+	else if (text[0] == '-' && text[1] == '\0')
+		n->ndup.dupfd = -1;
+	else {
+
+		if (err)
+			synerror(psh, "Bad fd number");
+		else
+			n->ndup.vname = makename(psh);
+	}
+}
+
+
+STATIC void
+parsefname(shinstance *psh)
+{
+	union node *n = psh->redirnode;
+
+	if (readtoken(psh) != TWORD)
+		synexpect(psh, -1);
+	if (n->type == NHERE) {
+		struct heredoc *here = psh->heredoc;
+		struct heredoc *p;
+		size_t i;
+
+		if (psh->quoteflag == 0)
+			n->type = NXHERE;
+		TRACE((psh, "Here document %d\n", n->type));
+		if (here->striptabs) {
+			while (*psh->wordtext == '\t')
+				psh->wordtext++;
+		}
+		if (! noexpand(psh, psh->wordtext) || (i = strlen(psh->wordtext)) == 0 || i > EOFMARKLEN)
+			synerror(psh, "Illegal eof marker for << redirection");
+		rmescapes(psh, psh->wordtext);
+		here->eofmark = psh->wordtext;
+		here->next = NULL;
+		if (psh->heredoclist == NULL)
+			psh->heredoclist = here;
+		else {
+			for (p = psh->heredoclist ; p->next ; p = p->next);
+			p->next = here;
+		}
+	} else if (n->type == NTOFD || n->type == NFROMFD) {
+		fixredir(psh, n, psh->wordtext, 0);
+	} else {
+		n->nfile.fname = makename(psh);
+	}
+}
+
+
+/*
+ * Input any here documents.
+ */
+
+STATIC void
+parseheredoc(shinstance *psh)
+{
+	struct heredoc *here;
+	union node *n;
+
+	while (psh->heredoclist) {
+		here = psh->heredoclist;
+		psh->heredoclist = here->next;
+		if (psh->needprompt) {
+			setprompt(psh, 2);
+			psh->needprompt = 0;
+		}
+		readtoken1(psh, pgetc(psh), here->here->type == NHERE? SQSYNTAX : DQSYNTAX,
+				here->eofmark, here->striptabs);
+		n = pstallocnode(psh, sizeof (struct narg));
+		n->narg.type = NARG;
+		n->narg.next = NULL;
+		n->narg.text = psh->wordtext;
+		n->narg.backquote = psh->backquotelist;
+		here->here->nhere.doc = n;
+	}
+}
+
+STATIC int
+peektoken(shinstance *psh)
+{
+	int t;
+
+	t = readtoken(psh);
+	psh->tokpushback++;
+	return (t);
+}
+
+STATIC int
+readtoken(shinstance *psh)
+{
+	int t;
+	int savecheckkwd = psh->checkkwd;
+#ifdef DEBUG
+	int alreadyseen = psh->tokpushback;
+#endif
+	struct alias *ap;
+
+	top:
+	t = xxreadtoken(psh);
+
+	if (psh->checkkwd) {
+		/*
+		 * eat newlines
+		 */
+		if (psh->checkkwd == 2) {
+			psh->checkkwd = 0;
+			while (t == TNL) {
+				parseheredoc(psh);
+				t = xxreadtoken(psh);
+			}
+		} else
+			psh->checkkwd = 0;
+		/*
+		 * check for keywords and aliases
+		 */
+		if (t == TWORD && !psh->quoteflag)
+		{
+			const char *const *pp;
+
+			for (pp = parsekwd; *pp; pp++) {
+				if (**pp == *psh->wordtext && equal(*pp, psh->wordtext))
+				{
+					psh->lasttoken = t = (int)(pp -
+					    parsekwd + KWDOFFSET);
+					TRACE((psh, "keyword %s recognized\n", tokname[t]));
+					goto out;
+				}
+			}
+			if(!psh->noalias &&
+			    (ap = lookupalias(psh, psh->wordtext, 1)) != NULL) {
+				pushstring(psh, ap->val, strlen(ap->val), ap);
+				psh->checkkwd = savecheckkwd;
+				goto top;
+			}
+		}
+out:
+		psh->checkkwd = (t == TNOT) ? savecheckkwd : 0;
+	}
+#ifdef DEBUG
+	if (!alreadyseen)
+	    TRACE((psh, "token %s %s\n", tokname[t], t == TWORD ? psh->wordtext : ""));
+	else
+	    TRACE((psh, "reread token %s \"%s\"\n", tokname[t], t == TWORD ? psh->wordtext : ""));
+#endif
+	return (t);
+}
+
+
+/*
+ * Read the next input token.
+ * If the token is a word, we set psh->backquotelist to the list of cmds in
+ *	backquotes.  We set psh->quoteflag to true if any part of the word was
+ *	quoted.
+ * If the token is TREDIR, then we set psh->redirnode to a structure containing
+ *	the redirection.
+ * In all cases, the variable psh->startlinno is set to the number of the line
+ *	on which the token starts.
+ *
+ * [Change comment:  here documents and internal procedures]
+ * [Readtoken shouldn't have any arguments.  Perhaps we should make the
+ *  word parsing code into a separate routine.  In this case, readtoken
+ *  doesn't need to have any internal procedures, but parseword does.
+ *  We could also make parseoperator in essence the main routine, and
+ *  have parseword (readtoken1?) handle both words and redirection.]
+ */
+
+#define RETURN(token)	return psh->lasttoken = token
+
+STATIC int
+xxreadtoken(shinstance *psh)
+{
+	int c;
+
+	if (psh->tokpushback) {
+		psh->tokpushback = 0;
+		return psh->lasttoken;
+	}
+	if (psh->needprompt) {
+		setprompt(psh, 2);
+		psh->needprompt = 0;
+	}
+	psh->startlinno = psh->plinno;
+	for (;;) {	/* until token or start of word found */
+		c = pgetc_macro(psh);
+		if (c == ' ' || c == '\t')
+			continue;		/* quick check for white space first */
+		switch (c) {
+		case ' ': case '\t':
+			continue;
+		case '#':
+			while ((c = pgetc(psh)) != '\n' && c != PEOF);
+			pungetc(psh);
+			continue;
+		case '\\':
+			if (pgetc(psh) == '\n') {
+				psh->startlinno = ++psh->plinno;
+				if (psh->doprompt)
+					setprompt(psh, 2);
+				else
+					setprompt(psh, 0);
+				continue;
+			}
+			pungetc(psh);
+			goto breakloop;
+		case '\n':
+			psh->plinno++;
+			psh->needprompt = psh->doprompt;
+			RETURN(TNL);
+		case PEOF:
+			RETURN(TEOF);
+		case '&':
+			if (pgetc(psh) == '&')
+				RETURN(TAND);
+			pungetc(psh);
+			RETURN(TBACKGND);
+		case '|':
+			if (pgetc(psh) == '|')
+				RETURN(TOR);
+			pungetc(psh);
+			RETURN(TPIPE);
+		case ';':
+			if (pgetc(psh) == ';')
+				RETURN(TENDCASE);
+			pungetc(psh);
+			RETURN(TSEMI);
+		case '(':
+			RETURN(TLP);
+		case ')':
+			RETURN(TRP);
+		default:
+			goto breakloop;
+		}
+	}
+breakloop:
+	return readtoken1(psh, c, BASESYNTAX, (char *)NULL, 0);
+#undef RETURN
+}
+
+
+
+/*
+ * If eofmark is NULL, read a word or a redirection symbol.  If eofmark
+ * is not NULL, read a here document.  In the latter case, eofmark is the
+ * word which marks the end of the document and striptabs is true if
+ * leading tabs should be stripped from the document.  The argument firstc
+ * is the first character of the input token or document.
+ *
+ * Because C does not have internal subroutines, I have simulated them
+ * using goto's to implement the subroutine linkage.  The following macros
+ * will run code that appears at the end of readtoken1.
+ */
+
+#define CHECKEND()	{goto checkend; checkend_return:;}
+#define PARSEREDIR()	{goto parseredir; parseredir_return:;}
+#define PARSESUB()	{goto parsesub; parsesub_return:;}
+#define PARSEBACKQOLD()	{oldstyle = 1; goto parsebackq; parsebackq_oldreturn:;}
+#define PARSEBACKQNEW()	{oldstyle = 0; goto parsebackq; parsebackq_newreturn:;}
+#define	PARSEARITH()	{goto parsearith; parsearith_return:;}
+
+/*
+ * Keep track of nested doublequotes in dblquote and doublequotep.
+ * We use dblquote for the first 32 levels, and we expand to a malloc'ed
+ * region for levels above that. Usually we never need to malloc.
+ * This code assumes that an int is 32 bits. We don't use uint32_t,
+ * because the rest of the code does not.
+ */
+#define ISDBLQUOTE() ((varnest < 32) ? (dblquote & (1 << varnest)) : \
+    (dblquotep[(varnest / 32) - 1] & (1 << (varnest % 32))))
+
+#define SETDBLQUOTE() \
+    if (varnest < 32) \
+	dblquote |= (1 << varnest); \
+    else \
+	dblquotep[(varnest / 32) - 1] |= (1 << (varnest % 32))
+
+#define CLRDBLQUOTE() \
+    if (varnest < 32) \
+	dblquote &= ~(1 << varnest); \
+    else \
+	dblquotep[(varnest / 32) - 1] &= ~(1 << (varnest % 32))
+
+STATIC int
+readtoken1(shinstance *psh, int firstc, char const *syntax, char *eofmark, int striptabs)
+{
+	int c = firstc;
+	char *out;
+	char line[EOFMARKLEN + 1];
+	struct nodelist *bqlist;
+	int quotef = 0;
+	int *dblquotep = NULL;
+	size_t maxnest = 32;
+	int dblquote;
+	int varnest;	/* levels of variables expansion */
+	int arinest;	/* levels of arithmetic expansion */
+	int parenlevel;	/* levels of parens in arithmetic */
+	int oldstyle;
+	char const *prevsyntax;	/* syntax before arithmetic */
+
+	psh->startlinno = psh->plinno;
+	dblquote = 0;
+	varnest = 0;
+	if (syntax == DQSYNTAX) {
+		SETDBLQUOTE();
+	}
+	quotef = 0;
+	bqlist = NULL;
+	arinest = 0;
+	parenlevel = 0;
+
+#if __GNUC__
+	/* Try avoid longjmp clobbering */
+	(void) &maxnest;
+	(void) &dblquotep;
+	(void) &out;
+	(void) &quotef;
+	(void) &dblquote;
+	(void) &varnest;
+	(void) &arinest;
+	(void) &parenlevel;
+	(void) &oldstyle;
+	(void) &prevsyntax;
+	(void) &syntax;
+#endif
+
+	PSTARTSTACKSTR(psh, out);
+	loop: {	/* for each line, until end of word */
+#if ATTY
+		if (c == '\034' && psh->doprompt
+		 && attyset() && ! equal(termval(), "emacs")) {
+			attyline();
+			if (syntax == BASESYNTAX)
+				return readtoken(psh);
+			c = pgetc(psh);
+			goto loop;
+		}
+#endif
+		CHECKEND();	/* set c to PEOF if at end of here document */
+		for (;;) {	/* until end of line or end of word */
+			PSTCHECKSTRSPACE(psh, 4+1, out);	/* permit 4 calls to PSTUPUTC, pluss terminator */
+			switch(syntax[c]) {
+			case CNL:	/* '\n' */
+				if (syntax == BASESYNTAX)
+					goto endword;	/* exit outer loop */
+				PSTUPUTC(psh, c, out);
+				psh->plinno++;
+				if (psh->doprompt)
+					setprompt(psh, 2);
+				else
+					setprompt(psh, 0);
+				c = pgetc(psh);
+				goto loop;		/* continue outer loop */
+			case CWORD:
+				PSTUPUTC(psh, c, out);
+				break;
+			case CCTL:
+				if (eofmark == NULL || ISDBLQUOTE())
+					PSTUPUTC(psh, CTLESC, out);
+				PSTUPUTC(psh, c, out);
+				break;
+			case CBACK:	/* backslash */
+				c = pgetc(psh);
+				if (c == PEOF) {
+					PSTUPUTC(psh, '\\', out);
+					pungetc(psh);
+					break;
+				}
+				if (c == '\n') {
+					if (psh->doprompt)
+						setprompt(psh, 2);
+					else
+						setprompt(psh, 0);
+					break;
+				}
+				quotef = 1;
+				if (ISDBLQUOTE() && c != '\\' &&
+				    c != '`' && c != '$' &&
+				    (c != '"' || eofmark != NULL))
+					PSTUPUTC(psh, '\\', out);
+				if (SQSYNTAX[c] == CCTL)
+					PSTUPUTC(psh, CTLESC, out);
+				else if (eofmark == NULL) {
+					PSTUPUTC(psh, CTLQUOTEMARK, out);
+					PSTUPUTC(psh, c, out);
+					if (varnest != 0)
+						PSTUPUTC(psh, CTLQUOTEEND, out);
+					break;
+				}
+				PSTUPUTC(psh, c, out);
+				break;
+			case CSQUOTE:
+				if (syntax != SQSYNTAX) {
+					if (eofmark == NULL)
+						PSTUPUTC(psh, CTLQUOTEMARK, out);
+					quotef = 1;
+					syntax = SQSYNTAX;
+					break;
+				}
+				if (eofmark != NULL && arinest == 0 &&
+				    varnest == 0) {
+					/* Ignore inside quoted here document */
+					PSTUPUTC(psh, c, out);
+					break;
+				}
+				/* End of single quotes... */
+				if (arinest)
+					syntax = ARISYNTAX;
+				else {
+					syntax = BASESYNTAX;
+					if (varnest != 0)
+						PSTUPUTC(psh, CTLQUOTEEND, out);
+				}
+				break;
+			case CDQUOTE:
+				if (eofmark != NULL && arinest == 0 &&
+				    varnest == 0) {
+					/* Ignore inside here document */
+					PSTUPUTC(psh, c, out);
+					break;
+				}
+				quotef = 1;
+				if (arinest) {
+					if (ISDBLQUOTE()) {
+						syntax = ARISYNTAX;
+						CLRDBLQUOTE();
+					} else {
+						syntax = DQSYNTAX;
+						SETDBLQUOTE();
+						PSTUPUTC(psh, CTLQUOTEMARK, out);
+					}
+					break;
+				}
+				if (eofmark != NULL)
+					break;
+				if (ISDBLQUOTE()) {
+					if (varnest != 0)
+						PSTUPUTC(psh, CTLQUOTEEND, out);
+					syntax = BASESYNTAX;
+					CLRDBLQUOTE();
+				} else {
+					syntax = DQSYNTAX;
+					SETDBLQUOTE();
+					PSTUPUTC(psh, CTLQUOTEMARK, out);
+				}
+				break;
+			case CVAR:	/* '$' */
+				PARSESUB();		/* parse substitution */
+				break;
+			case CENDVAR:	/* CLOSEBRACE */
+				if (varnest > 0 && !ISDBLQUOTE()) {
+					varnest--;
+					PSTUPUTC(psh, CTLENDVAR, out);
+				} else {
+					PSTUPUTC(psh, c, out);
+				}
+				break;
+			case CLP:	/* '(' in arithmetic */
+				parenlevel++;
+				PSTUPUTC(psh, c, out);
+				break;
+			case CRP:	/* ')' in arithmetic */
+				if (parenlevel > 0) {
+					PSTUPUTC(psh, c, out);
+					--parenlevel;
+				} else {
+					if (pgetc(psh) == ')') {
+						if (--arinest == 0) {
+							PSTUPUTC(psh, CTLENDARI, out);
+							syntax = prevsyntax;
+							if (syntax == DQSYNTAX)
+								SETDBLQUOTE();
+							else
+								CLRDBLQUOTE();
+						} else
+							PSTUPUTC(psh, ')', out);
+					} else {
+						/*
+						 * unbalanced parens
+						 *  (don't 2nd guess - no error)
+						 */
+						pungetc(psh);
+						PSTUPUTC(psh, ')', out);
+					}
+				}
+				break;
+			case CBQUOTE:	/* '`' */
+				PARSEBACKQOLD();
+				break;
+			case CSHEOF:
+				goto endword;		/* exit outer loop */
+			default:
+				if (varnest == 0)
+					goto endword;	/* exit outer loop */
+				PSTUPUTC(psh, c, out);
+			}
+			c = pgetc_macro(psh);
+		}
+	}
+endword:
+	if (syntax == ARISYNTAX)
+		synerror(psh, "Missing '))'");
+	if (syntax != BASESYNTAX && ! psh->parsebackquote && eofmark == NULL)
+		synerror(psh, "Unterminated quoted string");
+	if (varnest != 0) {
+		psh->startlinno = psh->plinno;
+		/* { */
+		synerror(psh, "Missing '}'");
+	}
+	PSTUPUTC(psh, '\0', out);
+	if (eofmark == NULL) {
+		size_t len = (size_t)(out - PSTBLOCK(psh));
+		char *start = PSTBLOCK(psh);
+		if ((c == '>' || c == '<')
+		 && quotef == 0
+		 && len <= 2
+		 && (*start == '\0' || is_digit(*start))) {
+			out = start;
+			PARSEREDIR();
+			return psh->lasttoken = TREDIR;
+		} else {
+			pungetc(psh);
+		}
+	}
+	psh->quoteflag = quotef;
+	psh->backquotelist = bqlist;
+	psh->wordtext = pstgrabstr(psh, out);
+	if (dblquotep != NULL)
+	    ckfree(psh, dblquotep);
+	return psh->lasttoken = TWORD;
+/* end of readtoken routine */
+
+
+
+/*
+ * Check to see whether we are at the end of the here document.  When this
+ * is called, c is set to the first character of the next input line.  If
+ * we are at the end of the here document, this routine sets the c to PEOF.
+ */
+
+checkend: {
+	if (eofmark) {
+		if (striptabs) {
+			while (c == '\t')
+				c = pgetc(psh);
+		}
+		if (c == *eofmark) {
+			if (pfgets(psh, line, sizeof line) != NULL) {
+				char *p, *q;
+
+				p = line;
+				for (q = eofmark + 1 ; *q && *p == *q ; p++, q++);
+				if (*p == '\n' && *q == '\0') {
+					c = PEOF;
+					psh->plinno++;
+					psh->needprompt = psh->doprompt;
+				} else {
+					pushstring(psh, line, strlen(line), NULL);
+				}
+			}
+		}
+	}
+	goto checkend_return;
+}
+
+
+/*
+ * Parse a redirection operator.  The variable "out" points to a string
+ * specifying the fd to be redirected.  The variable "c" contains the
+ * first character of the redirection operator.
+ */
+
+parseredir: {
+	union node *np;
+	char fd = *out;
+	char dummy[   sizeof(struct ndup) >= sizeof(struct nfile)
+	           && sizeof(struct ndup) >= sizeof(struct nhere) ? 1 : 0];
+	(void)dummy;
+
+	np = pstallocnode(psh, sizeof (struct ndup));
+	if (c == '>') {
+		np->nfile.fd = 1;
+		c = pgetc(psh);
+		if (c == '>')
+			np->type = NAPPEND;
+		else if (c == '|')
+			np->type = NCLOBBER;
+		else if (c == '&')
+			np->type = NTOFD;
+		else {
+			np->type = NTO;
+			pungetc(psh);
+		}
+	} else {	/* c == '<' */
+		np->nfile.fd = 0;
+		switch (c = pgetc(psh)) {
+		case '<':
+			np->type = NHERE;
+			psh->heredoc = (struct heredoc *)pstalloc(psh, sizeof (struct heredoc));
+			psh->heredoc->here = np;
+			if ((c = pgetc(psh)) == '-') {
+				psh->heredoc->striptabs = 1;
+			} else {
+				psh->heredoc->striptabs = 0;
+				pungetc(psh);
+			}
+			break;
+
+		case '&':
+			np->type = NFROMFD;
+			break;
+
+		case '>':
+			np->type = NFROMTO;
+			break;
+
+		default:
+			np->type = NFROM;
+			pungetc(psh);
+			break;
+		}
+	}
+	if (fd != '\0')
+		np->nfile.fd = digit_val(fd);
+	psh->redirnode = np;
+	goto parseredir_return;
+}
+
+
+/*
+ * Parse a substitution.  At this point, we have read the dollar sign
+ * and nothing else.
+ */
+
+parsesub: {
+	int subtype;
+	int typeloc;
+	int flags;
+	char *p;
+	static const char types[] = "}-+?=";
+
+	c = pgetc(psh);
+	if (c != '(' && c != OPENBRACE && !is_name(c) && !is_special(c)) {
+		PSTUPUTC(psh, '$', out);
+		pungetc(psh);
+	} else if (c == '(') {	/* $(command) or $((arith)) */
+		if (pgetc(psh) == '(') {
+			PARSEARITH();
+		} else {
+			pungetc(psh);
+			PARSEBACKQNEW();
+		}
+	} else {
+		PSTUPUTC(psh, CTLVAR, out);
+		typeloc = (int)(out - PSTBLOCK(psh));
+		PSTUPUTC(psh, VSNORMAL, out);
+		subtype = VSNORMAL;
+		if (c == OPENBRACE) {
+			c = pgetc(psh);
+			if (c == '#') {
+				if ((c = pgetc(psh)) == CLOSEBRACE)
+					c = '#';
+				else
+					subtype = VSLENGTH;
+			}
+			else
+				subtype = 0;
+		}
+		if (is_name(c)) {
+			do {
+				PSTPUTC(psh, c, out);
+				c = pgetc(psh);
+			} while (is_in_name(c));
+		} else if (is_digit(c)) {
+			do {
+				PSTUPUTC(psh, c, out);
+				c = pgetc(psh);
+			} while (is_digit(c));
+		}
+		else if (is_special(c)) {
+			PSTUPUTC(psh, c, out);
+			c = pgetc(psh);
+		}
+		else {
+badsub:
+		    synerror(psh, "Bad substitution");
+		}
+
+		PSTPUTC(psh, '=', out);
+		flags = 0;
+		if (subtype == 0) {
+			switch (c) {
+			case ':':
+				flags = VSNUL;
+				c = pgetc(psh);
+				/*FALLTHROUGH*/
+			default:
+				p = strchr(types, c);
+				if (p == NULL)
+					goto badsub;
+				subtype = (int)(p - types + VSNORMAL);
+				break;
+			case '%':
+			case '#':
+				{
+					int cc = c;
+					subtype = c == '#' ? VSTRIMLEFT :
+							     VSTRIMRIGHT;
+					c = pgetc(psh);
+					if (c == cc)
+						subtype++;
+					else
+						pungetc(psh);
+					break;
+				}
+			}
+		} else {
+			pungetc(psh);
+		}
+		if (ISDBLQUOTE() || arinest)
+			flags |= VSQUOTE;
+		*(PSTBLOCK(psh) + typeloc) = subtype | flags;
+		if (subtype != VSNORMAL) {
+			varnest++;
+			if (varnest >= (int)maxnest) {
+				dblquotep = ckrealloc(psh, dblquotep, maxnest / 8);
+				dblquotep[(maxnest / 32) - 1] = 0;
+				maxnest += 32;
+			}
+		}
+	}
+	goto parsesub_return;
+}
+
+
+/*
+ * Called to parse command substitutions.  Newstyle is set if the command
+ * is enclosed inside $(...); nlpp is a pointer to the head of the linked
+ * list of commands (passed by reference), and savelen is the number of
+ * characters on the top of the stack which must be preserved.
+ */
+
+parsebackq: {
+	struct nodelist **nlpp;
+	int savepbq;
+	union node *n;
+	char *volatile str;
+	struct jmploc jmploc;
+	struct jmploc *volatile savehandler;
+	int savelen;
+	int saveprompt;
+#ifdef __GNUC__
+	(void) &saveprompt;
+#endif
+
+	savepbq = psh->parsebackquote;
+	if (setjmp(jmploc.loc)) {
+		if (str)
+			ckfree(psh, str);
+		psh->parsebackquote = 0;
+		psh->handler = savehandler;
+		longjmp(psh->handler->loc, 1);
+	}
+	INTOFF;
+	str = NULL;
+	savelen = (int)(out - PSTBLOCK(psh));
+	if (savelen > 0) {
+		str = ckmalloc(psh, savelen);
+		memcpy(str, PSTBLOCK(psh), savelen);
+	}
+	savehandler = psh->handler;
+	psh->handler = &jmploc;
+	INTON;
+        if (oldstyle) {
+                /* We must read until the closing backquote, giving special
+                   treatment to some slashes, and then push the string and
+                   reread it as input, interpreting it normally.  */
+                char *pout;
+                int pc;
+                int psavelen;
+                char *pstr;
+
+
+                PSTARTSTACKSTR(psh, pout);
+		for (;;) {
+			if (psh->needprompt) {
+				setprompt(psh, 2);
+				psh->needprompt = 0;
+			}
+			switch (pc = pgetc(psh)) {
+			case '`':
+				goto done;
+
+			case '\\':
+				if ((pc = pgetc(psh)) == '\n') {
+					psh->plinno++;
+					if (psh->doprompt)
+						setprompt(psh, 2);
+					else
+						setprompt(psh, 0);
+					/*
+					 * If eating a newline, avoid putting
+					 * the newline into the new character
+					 * stream (via the PSTPUTC after the
+					 * switch).
+					 */
+					continue;
+				}
+				if (pc != '\\' && pc != '`' && pc != '$' && (!ISDBLQUOTE() || pc != '"'))
+					PSTPUTC(psh, '\\', pout);
+				break;
+
+			case '\n':
+				psh->plinno++;
+				psh->needprompt = psh->doprompt;
+				break;
+
+			case PEOF:
+			        psh->startlinno = psh->plinno;
+				synerror(psh, "EOF in backquote substitution");
+ 				break;
+
+			default:
+				break;
+			}
+			PSTPUTC(psh, pc, pout);
+                }
+done:
+                PSTPUTC(psh, '\0', pout);
+                psavelen = (int)(pout - PSTBLOCK(psh));
+                if (psavelen > 0) { /** @todo nonsensical test? */
+			pstr = pstgrabstr(psh, pout);
+			setinputstring(psh, pstr, 1 /*push*/);
+                }
+        }
+	nlpp = &bqlist;
+	while (*nlpp)
+		nlpp = &(*nlpp)->next;
+	*nlpp = pstalloclist(psh);
+	(*nlpp)->next = NULL;
+	psh->parsebackquote = oldstyle;
+
+	if (oldstyle) {
+		saveprompt = psh->doprompt;
+		psh->doprompt = 0;
+	}
+
+	n = list(psh, 0);
+
+	if (oldstyle)
+		psh->doprompt = saveprompt;
+	else {
+		if (readtoken(psh) != TRP)
+			synexpect(psh, TRP);
+	}
+
+	(*nlpp)->n = n;
+        if (oldstyle) {
+		/*
+		 * Start reading from old file again, ignoring any pushed back
+		 * tokens left from the backquote parsing
+		 */
+                popfile(psh);
+		psh->tokpushback = 0;
+	}
+	PSTARTSTACKSTR(psh, out);
+	if (str) {
+		PSTPUTSTRN(psh, str, savelen, out);
+		INTOFF;
+		ckfree(psh, str);
+		str = NULL;
+		INTON;
+	}
+	psh->parsebackquote = savepbq;
+	psh->handler = savehandler;
+	if (arinest || ISDBLQUOTE())
+		PSTUPUTC(psh, CTLBACKQ | CTLQUOTE, out);
+	else
+		PSTUPUTC(psh, CTLBACKQ, out);
+	if (oldstyle)
+		goto parsebackq_oldreturn;
+	else
+		goto parsebackq_newreturn;
+}
+
+/*
+ * Parse an arithmetic expansion (indicate start of one and set state)
+ */
+parsearith: {
+
+	if (++arinest == 1) {
+		prevsyntax = syntax;
+		syntax = ARISYNTAX;
+		PSTUPUTC(psh, CTLARI, out);
+		if (ISDBLQUOTE())
+			PSTUPUTC(psh, '"',out);
+		else
+			PSTUPUTC(psh, ' ',out);
+	} else {
+		/*
+		 * we collapse embedded arithmetic expansion to
+		 * parenthesis, which should be equivalent
+		 */
+		PSTUPUTC(psh, '(', out);
+	}
+	goto parsearith_return;
+}
+
+} /* end of readtoken */
+
+
+
+#ifdef mkinit
+RESET {
+	psh->tokpushback = 0;
+	psh->checkkwd = 0;
+}
+#endif
+
+/*
+ * Returns true if the text contains nothing to expand (no dollar signs
+ * or backquotes).
+ */
+
+STATIC int
+noexpand(shinstance *psh, char *text)
+{
+	char *p;
+	char c;
+
+	p = text;
+	while ((c = *p++) != '\0') {
+		if (c == CTLQUOTEMARK)
+			continue;
+		if (c == CTLESC)
+			p++;
+		else if (BASESYNTAX[(int)c] == CCTL)
+			return 0;
+	}
+	return 1;
+}
+
+
+/*
+ * Return true if the argument is a legal variable name (a letter or
+ * underscore followed by zero or more letters, underscores, and digits).
+ */
+
+int
+goodname(const char *name)
+{
+	const char *p;
+
+	p = name;
+	if (! is_name(*p))
+		return 0;
+	while (*++p) {
+		if (! is_in_name(*p))
+			return 0;
+	}
+	return 1;
+}
+
+
+/*
+ * Called when an unexpected token is read during the parse.  The argument
+ * is the token that is expected, or -1 if more than one type of token can
+ * occur at this point.
+ */
+
+SH_NORETURN_1 STATIC void
+synexpect(shinstance *psh, int token)
+{
+	char msg[64];
+
+	if (token >= 0) {
+		fmtstr(msg, 64, "%s unexpected (expecting %s)",
+			tokname[psh->lasttoken], tokname[token]);
+	} else {
+		fmtstr(msg, 64, "%s unexpected", tokname[psh->lasttoken]);
+	}
+	synerror(psh, msg);
+	/* NOTREACHED */
+}
+
+
+SH_NORETURN_1 STATIC void
+synerror(shinstance *psh, const char *msg)
+{
+	if (psh->commandname) {
+		TRACE((psh, "synerror: %s: %d: Syntax error: %s", psh->commandname, psh->startlinno, msg));
+		outfmt(&psh->errout, "%s: %d: ", psh->commandname, psh->startlinno);
+	} else {
+		TRACE((psh, "synerror: Syntax error: %s\n", msg));
+	}
+	outfmt(&psh->errout, "Syntax error: %s\n", msg);
+	error(psh, (char *)NULL);
+	/* NOTREACHED */
+}
+
+STATIC const char *
+my_basename(const char *argv0, unsigned *lenp)
+{
+	const char *tmp;
+
+	/* skip the path */
+	for (tmp = strpbrk(argv0, "\\/:"); tmp; tmp = strpbrk(argv0, "\\/:"))
+		argv0 = tmp + 1;
+
+	if (lenp) {
+		/* find the end, ignoring extenions */
+		tmp = strrchr(argv0, '.');
+		if (!tmp)
+			tmp = strchr(argv0, '\0');
+		*lenp = (unsigned)(tmp - argv0);
+	}
+	return argv0;
+}
+
+
+STATIC void
+setprompt(shinstance *psh, int which)
+{
+	psh->whichprompt = which;
+
+#ifndef SMALL
+	if (!el)
+#endif
+	{
+		/* deal with bash prompts */
+		const char *prompt = getprompt(psh, NULL);
+		if (!strchr(prompt, '\\')) {
+			out2str(psh, prompt);
+		} else {
+			while (*prompt) {
+				if (*prompt != '\\') {
+					out2c(psh, *prompt++);
+				} else {
+					prompt++;
+					switch (*prompt++)
+					{
+						/* simple */
+						case '$':	out2c(psh, sh_geteuid(psh) ? '$' : '#'); break;
+						case '\\': 	out2c(psh, '\\'); break;
+						case 'a':	out2c(psh, '\a'); break;
+						case 'e':	out2c(psh, 033); break;
+						case 'n': 	out2c(psh, '\n'); break;
+						case 'r': 	out2c(psh, '\r'); break;
+
+						/* complicated */
+						case 's': {
+							unsigned len;
+							const char *arg0 = my_basename(psh->arg0, &len);
+							outfmt(psh->out2, "%.*s", len, arg0);
+							break;
+						}
+						case 'v':
+							outfmt(psh->out2, "%d.%d", KBUILD_VERSION_MAJOR,
+								   KBUILD_VERSION_MINOR);
+							break;
+						case 'V':
+							outfmt(psh->out2, "%d.%d.%d", KBUILD_VERSION_MAJOR,
+								   KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH);
+							break;
+							out2str(psh, getpwd(psh, 1) ? getpwd(psh, 1) : "?");
+							break;
+						case 'w':
+						case 'W': {
+							const char *cwd = getpwd(psh, 1);
+							const char *home = bltinlookup(psh, "HOME", 1);
+							size_t home_len = home ? strlen(home) : 0;
+							if (!cwd) cwd = "?";
+							if (!strncmp(cwd, home, home_len)
+							  && (    cwd[home_len] == '\0'
+							      || (cwd[home_len] == '/' && prompt[-1] == 'w'))) {
+								out2c(psh, '~');
+								if (prompt[-1] == 'w' && cwd[home_len]) {
+									out2str(psh, cwd + home_len);
+								}
+							} else if (prompt[-1] == 'w') {
+								out2str(psh, cwd);
+							} else {
+								out2str(psh, my_basename(cwd, NULL));
+							}
+							break;
+						}
+						case '0':
+						case '1':
+						case '2':
+						case '3': {
+							unsigned int ch = prompt[-1] - '0';
+							if (isdigit(*prompt)) {
+								ch *= 8;
+								ch += *prompt++ - '0';
+							}
+							if (isdigit(*prompt)) {
+								ch *= 8;
+								ch += *prompt++ - '0';
+							}
+							out2c(psh, ch);
+							break;
+						}
+
+						/* ignore */
+							break;
+						case '!':
+						case '#':
+						case '@':
+						case 'A':
+						case 'h':
+						case 'H':
+						case 'j':
+						case 'l':
+						case 't':
+						case 'T':
+						case 'u':
+						case '[':
+							if (strchr(prompt, ']')) {
+								prompt = strchr(prompt, ']') + 1;
+							}
+							break;
+						case 'D':
+							if (*prompt == '{' && strchr(prompt, '}')) {
+								prompt = strchr(prompt, '}') + 1;
+							}
+							break;
+					}
+
+				}
+			}
+		}
+	}
+}
+
+/*
+ * called by editline -- any expansions to the prompt
+ *    should be added here.
+ */
+const char *
+getprompt(shinstance *psh, void *unused)
+{
+	switch (psh->whichprompt) {
+	case 0:
+		return "";
+	case 1:
+		return ps1val(psh);
+	case 2:
+		return ps2val(psh);
+	default:
+		return "<internal prompt error>";
+	}
+}
+
+#ifndef KASH_SEPARATE_PARSER_ALLOCATOR
+
+static union node *copyparsetreeint(shinstance *psh, union node *src);
+
+/*
+ * Helper to copyparsetreeint.
+ */
+static struct nodelist *
+copynodelist(shinstance *psh, struct nodelist *src)
+{
+	struct nodelist *ret = NULL;
+	if (src) {
+		struct nodelist **ppnext = &ret;
+		while (src) {
+			struct nodelist *dst = pstalloclist(psh);
+			dst->next = NULL;
+			*ppnext = dst;
+			ppnext = &dst->next;
+			dst->n = copyparsetreeint(psh, src->n);
+			src = src->next;
+		}
+	}
+	return ret;
+}
+
+/*
+ * Duplicates a node tree.
+ *
+ * Note! This could probably be generated from nodelist.
+ */
+static union node *
+copyparsetreeint(shinstance *psh, union node *src)
+{
+	/** @todo Try avoid recursion for one of the sub-nodes, esp. when there
+	 *  	  is a list like 'next' one. */
+	union node *ret;
+	if (src) {
+		int const type = src->type;
+		switch (type) {
+			case NSEMI:
+			case NAND:
+			case NOR:
+			case NWHILE:
+			case NUNTIL:
+				ret = pstallocnode(psh, sizeof(src->nbinary));
+				ret->nbinary.type = type;
+				ret->nbinary.ch1  = copyparsetreeint(psh, src->nbinary.ch1);
+				ret->nbinary.ch2  = copyparsetreeint(psh, src->nbinary.ch2);
+				break;
+
+			case NCMD:
+				ret = pstallocnode(psh, sizeof(src->ncmd));
+				ret->ncmd.type     = NCMD;
+				ret->ncmd.backgnd  = src->ncmd.backgnd;
+				ret->ncmd.args     = copyparsetreeint(psh, src->ncmd.args);
+				ret->ncmd.redirect = copyparsetreeint(psh, src->ncmd.redirect);
+				break;
+
+			case NPIPE:
+				ret = pstallocnode(psh, sizeof(src->npipe));
+				ret->npipe.type     = NPIPE;
+				ret->npipe.backgnd  = src->ncmd.backgnd;
+				ret->npipe.cmdlist  = copynodelist(psh, src->npipe.cmdlist);
+				break;
+
+			case NREDIR:
+			case NBACKGND:
+			case NSUBSHELL:
+				ret = pstallocnode(psh, sizeof(src->nredir));
+				ret->nredir.type     = type;
+				ret->nredir.n        = copyparsetreeint(psh, src->nredir.n);
+				ret->nredir.redirect = copyparsetreeint(psh, src->nredir.redirect);
+				break;
+
+			case NIF:
+				ret = pstallocnode(psh, sizeof(src->nif));
+				ret->nif.type        = NIF;
+				ret->nif.test        = copyparsetreeint(psh, src->nif.test);
+				ret->nif.ifpart      = copyparsetreeint(psh, src->nif.ifpart);
+				ret->nif.elsepart    = copyparsetreeint(psh, src->nif.elsepart);
+				break;
+
+			case NFOR:
+				ret = pstallocnode(psh, sizeof(src->nfor));
+				ret->nfor.type       = NFOR;
+				ret->nfor.args       = copyparsetreeint(psh, src->nfor.args);
+				ret->nfor.body       = copyparsetreeint(psh, src->nfor.body);
+				ret->nfor.var        = pstsavestr(psh, src->nfor.var);
+				break;
+
+			case NCASE:
+				ret = pstallocnode(psh, sizeof(src->ncase));
+				ret->ncase.type      = NCASE;
+				ret->ncase.expr      = copyparsetreeint(psh, src->ncase.expr);
+				ret->ncase.cases     = copyparsetreeint(psh, src->ncase.cases);
+				break;
+
+			case NCLIST:
+				ret = pstallocnode(psh, sizeof(src->nclist));
+				ret->nclist.type     = NCLIST;
+				ret->nclist.next     = copyparsetreeint(psh, src->nclist.next);
+				ret->nclist.pattern  = copyparsetreeint(psh, src->nclist.pattern);
+				ret->nclist.body     = copyparsetreeint(psh, src->nclist.body);
+				break;
+
+			case NDEFUN:
+			case NARG:
+				ret = pstallocnode(psh, sizeof(src->narg));
+				ret->narg.type       = type;
+				ret->narg.next       = copyparsetreeint(psh, src->narg.next);
+				ret->narg.text       = pstsavestr(psh, src->narg.text);
+				ret->narg.backquote  = copynodelist(psh, src->narg.backquote);
+				break;
+
+			case NTO:
+			case NCLOBBER:
+			case NFROM:
+			case NFROMTO:
+			case NAPPEND:
+				ret = pstallocnode(psh, sizeof(src->nfile));
+				ret->nfile.type      = type;
+				ret->nfile.fd        = src->nfile.fd;
+				ret->nfile.next      = copyparsetreeint(psh, src->nfile.next);
+				ret->nfile.fname     = copyparsetreeint(psh, src->nfile.fname);
+				break;
+
+			case NTOFD:
+			case NFROMFD:
+				ret = pstallocnode(psh, sizeof(src->ndup));
+				ret->ndup.type       = type;
+				ret->ndup.fd         = src->ndup.fd;
+				ret->ndup.next       = copyparsetreeint(psh, src->ndup.next);
+				ret->ndup.dupfd      = src->ndup.dupfd;
+				ret->ndup.vname      = copyparsetreeint(psh, src->ndup.vname);
+				break;
+
+			case NHERE:
+			case NXHERE:
+				ret = pstallocnode(psh, sizeof(src->nhere));
+				ret->nhere.type      = type;
+				ret->nhere.fd        = src->nhere.fd;
+				ret->nhere.next      = copyparsetreeint(psh, src->nhere.next);
+				ret->nhere.doc       = copyparsetreeint(psh, src->nhere.doc);
+				break;
+
+			case NNOT:
+				ret = pstallocnode(psh, sizeof(src->nnot));
+				ret->nnot.type      = NNOT;
+				ret->nnot.com       = copyparsetreeint(psh, src->nnot.com);
+				break;
+
+			default:
+				error(psh, "Unknown node type: %d (node=%p)", src->type, src);
+				return NULL;
+		}
+	} else {
+		ret = NULL;
+	}
+	return ret;
+}
+
+#endif
+
+union node *copyparsetree(shinstance *psh, union node *src)
+{
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+	K_NOREF(psh);
+	pstackretainpush(psh, src->pblock);
+	return src;
+#else
+	return copyparsetreeint(psh, src);
+#endif
+}
+
diff --git a/src/kash/parser.h b/src/kash/parser.h
new file mode 100644
index 0000000..58408be
--- /dev/null
+++ b/src/kash/parser.h
@@ -0,0 +1,88 @@
+/*	$NetBSD: parser.h,v 1.17 2004/06/26 22:09:49 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)parser.h	8.3 (Berkeley) 5/4/95
+ */
+
+#ifndef ___parse_h
+#define ___parse_h
+
+/* control characters in argument strings */
+#define CTL_FIRST '\201'	/* first 'special' character */
+#define CTLESC '\201'		/* escape next character */
+#define CTLVAR '\202'		/* variable defn */
+#define CTLENDVAR '\203'
+#define CTLBACKQ '\204'
+#define CTLQUOTE 01		/* ored with CTLBACKQ code if in quotes */
+/*	CTLBACKQ | CTLQUOTE == '\205' */
+#define	CTLARI	'\206'		/* arithmetic expression */
+#define	CTLENDARI '\207'
+#define	CTLQUOTEMARK '\210'
+#define	CTLQUOTEEND '\211'	/* only inside ${...} */
+#define	CTL_LAST '\211'		/* last 'special' character */
+
+/* variable substitution byte (follows CTLVAR) */
+#define VSTYPE	0x0f		/* type of variable substitution */
+#define VSNUL	0x10		/* colon--treat the empty string as unset */
+#define VSQUOTE 0x80		/* inside double quotes--suppress splitting */
+
+/* values of VSTYPE field */
+#define VSNORMAL	0x1		/* normal variable:  $var or ${var} */
+#define VSMINUS		0x2		/* ${var-text} */
+#define VSPLUS		0x3		/* ${var+text} */
+#define VSQUESTION	0x4		/* ${var?message} */
+#define VSASSIGN	0x5		/* ${var=text} */
+#define VSTRIMLEFT	0x6		/* ${var#pattern} */
+#define VSTRIMLEFTMAX	0x7		/* ${var##pattern} */
+#define VSTRIMRIGHT	0x8		/* ${var%pattern} */
+#define VSTRIMRIGHTMAX 	0x9		/* ${var%%pattern} */
+#define VSLENGTH	0xa		/* ${#var} */
+
+
+/*
+ * NEOF is returned by parsecmd when it encounters an end of file.  It
+ * must be distinct from NULL, so we use the address of a variable that
+ * happens to be handy.
+ */
+/*extern int tokpushback;*/
+#define NEOF ((union node *)&psh->tokpushback)
+/*extern int whichprompt;*/		/* 1 == PS1, 2 == PS2 */
+
+
+union node *parsecmd(struct shinstance *, int);
+void fixredir(struct shinstance *, union node *, const char *, int);
+int goodname(const char *);
+const char *getprompt(struct shinstance *, void *);
+union node *copyparsetree(shinstance *, union node *);
+
+#endif
diff --git a/src/kash/redir.c b/src/kash/redir.c
new file mode 100644
index 0000000..e9c3092
--- /dev/null
+++ b/src/kash/redir.c
@@ -0,0 +1,484 @@
+/*	$NetBSD: redir.c,v 1.29 2004/07/08 03:57:33 christos Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)redir.c	8.2 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: redir.c,v 1.29 2004/07/08 03:57:33 christos Exp $");
+#endif /* not lint */
+#endif
+
+#include <sys/types.h>
+#include <limits.h>         /* PIPE_BUF */
+#include <string.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+/*
+ * Code for dealing with input/output redirection.
+ */
+
+#include "main.h"
+#include "shell.h"
+#include "nodes.h"
+#include "jobs.h"
+#include "options.h"
+#include "expand.h"
+#include "redir.h"
+#include "output.h"
+#include "memalloc.h"
+#include "error.h"
+#include "shinstance.h"
+
+
+#define EMPTY -2		/* marks an unused slot in redirtab */
+#define PIPESIZE SHFILE_PIPE_SIZE
+
+
+//MKINIT struct redirtab *redirlist;
+
+/*
+ * We keep track of whether or not fd0 has been redirected.  This is for
+ * background commands, where we want to redirect fd0 to /dev/null only
+ * if it hasn't already been redirected.
+*/
+//int fd0_redirected = 0;
+
+STATIC void openredirect(shinstance *, union node *, char[10], int, const char *);
+STATIC int openhere(shinstance *, union node *);
+
+
+#ifndef SH_FORKED_MODE
+void
+subshellinitredir(shinstance *psh, shinstance *inherit)
+{
+    /* We can have a redirlist here if we're handling backtick while expanding
+       arguments, just copy it even if the subshell probably doesn't need it. */
+    struct redirtab *src = inherit->redirlist;
+    if (src)
+    {
+        struct redirtab **dstp = &psh->redirlist;
+	do
+	{
+	    struct redirtab *dst = ckmalloc(psh, sizeof(*dst));
+	    memcpy(dst->renamed, src->renamed, sizeof(dst->renamed));
+	    *dstp = dst;
+	    dstp = &dst->next;
+	    src = src->next;
+	} while (src);
+	*dstp = NULL;
+
+        psh->fd0_redirected = inherit->fd0_redirected;
+    }
+
+    /* Copy the expanded redirection filenames (stack), but only the last entry
+       as the subshell does not have the ability to unwind stack in the parent
+       and therefore cannot get to the earlier redirection stuff: */
+    if (inherit->expfnames)
+    {
+	redirexpfnames * const expfnamesrc = inherit->expfnames;
+	unsigned i = expfnamesrc->count;
+	redirexpfnames *dst = stalloc(psh, offsetof(redirexpfnames, names) + sizeof(dst->names[0]) * i);
+	dst->count = i;
+	dst->depth = 1;
+	dst->prev = NULL;
+	while (i-- > 0)
+	    dst->names[i] = stsavestr(psh, expfnamesrc->names[i]);
+	psh->expfnames = dst;
+    }
+}
+#endif /* !SH_FORKED_MODE */
+
+
+/*
+ * Process a list of redirection commands.  If the REDIR_PUSH flag is set,
+ * old file descriptors are stashed away so that the redirection can be
+ * undone by calling popredir.  If the REDIR_BACKQ flag is set, then the
+ * standard output, and the standard error if it becomes a duplicate of
+ * stdout, is saved in memory.
+ */
+
+void
+redirect(shinstance *psh, union node *redir, int flags)
+{
+	union node *n;
+	struct redirtab *sv = NULL;
+	int i;
+	int fd;
+	int try;
+	char memory[10];	/* file descriptors to write to memory */
+	unsigned idxexpfname;
+
+	for (i = 10 ; --i >= 0 ; )
+		memory[i] = 0;
+	memory[1] = flags & REDIR_BACKQ;
+	if (flags & REDIR_PUSH) {
+		sv = ckmalloc(psh, sizeof (struct redirtab));
+		for (i = 0 ; i < 10 ; i++)
+			sv->renamed[i] = EMPTY;
+		sv->next = psh->redirlist;
+		psh->redirlist = sv;
+	}
+	idxexpfname = 0;
+	for (n = redir, idxexpfname = 0 ; n ; n = n->nfile.next, idxexpfname++) {
+		kHlpAssert(idxexpfname < psh->expfnames->count);
+		fd = n->nfile.fd;
+		try = 0;
+		if ((n->nfile.type == NTOFD || n->nfile.type == NFROMFD) &&
+		    n->ndup.dupfd == fd)
+			continue; /* redirect from/to same file descriptor */
+
+		if ((flags & REDIR_PUSH) && sv->renamed[fd] == EMPTY) {
+			INTOFF;
+again:
+			if ((i = shfile_fcntl(&psh->fdtab, fd, F_DUPFD, 10)) == -1) {
+				switch (errno) {
+				case EBADF:
+					if (!try) {
+						openredirect(psh, n, memory, flags, psh->expfnames->names[idxexpfname]);
+						try++;
+						goto again;
+					}
+					/* FALLTHROUGH*/
+				default:
+					INTON;
+					error(psh, "%d: %s", fd, sh_strerror(psh, errno));
+					/* NOTREACHED */
+				}
+			}
+			if (!try) {
+				sv->renamed[fd] = i;
+				shfile_close(&psh->fdtab, fd);
+			}
+			INTON;
+		} else {
+			shfile_close(&psh->fdtab, fd);
+		}
+                if (fd == 0)
+                        psh->fd0_redirected++;
+		if (!try)
+			openredirect(psh, n, memory, flags, psh->expfnames->names[idxexpfname]);
+	}
+	kHlpAssert(!redir || idxexpfname == psh->expfnames->count);
+	if (memory[1])
+		psh->out1 = &psh->memout;
+	if (memory[2])
+		psh->out2 = &psh->memout;
+}
+
+
+STATIC void
+openredirect(shinstance *psh, union node *redir, char memory[10], int flags, const char *fname)
+{
+	int fd = redir->nfile.fd;
+	int f;
+	int oflags = O_WRONLY|O_CREAT|O_TRUNC;
+
+	/*
+	 * We suppress interrupts so that we won't leave open file
+	 * descriptors around.  This may not be such a good idea because
+	 * an open of a device or a fifo can block indefinitely.
+	 */
+	INTOFF;
+	memory[fd] = 0;
+	switch (redir->nfile.type) {
+	case NFROM:
+		if ((f = shfile_open(&psh->fdtab, fname, O_RDONLY, 0)) < 0)
+			goto eopen;
+		break;
+	case NFROMTO:
+		if ((f = shfile_open(&psh->fdtab, fname, O_RDWR|O_CREAT|O_TRUNC, 0666)) < 0)
+			goto ecreate;
+		break;
+	case NTO:
+		if (Cflag(psh))
+			oflags |= O_EXCL;
+		/* FALLTHROUGH */
+	case NCLOBBER:
+		if ((f = shfile_open(&psh->fdtab, fname, oflags, 0666)) < 0)
+			goto ecreate;
+		break;
+	case NAPPEND:
+		if ((f = shfile_open(&psh->fdtab, fname, O_WRONLY|O_CREAT|O_APPEND, 0666)) < 0)
+			goto ecreate;
+		break;
+	case NTOFD:
+	case NFROMFD:
+		if (redir->ndup.dupfd >= 0) {	/* if not ">&-" */
+			if (memory[redir->ndup.dupfd])
+				memory[fd] = 1;
+			else
+				copyfd(psh, redir->ndup.dupfd, fd);
+		}
+		INTON;
+		return;
+	case NHERE:
+	case NXHERE:
+		f = openhere(psh, redir);
+		break;
+	default:
+		sh_abort(psh);
+	}
+
+	if (f != fd) {
+		movefd(psh, f, fd);
+	}
+	INTON;
+	return;
+ecreate:
+	error(psh, "cannot create %s: %s", fname, errmsg(psh, errno, E_CREAT));
+eopen:
+	error(psh, "cannot open %s: %s", fname, errmsg(psh, errno, E_OPEN));
+}
+
+#ifdef KASH_USE_FORKSHELL2
+struct openherechild
+{
+	int pip[2];
+	size_t len;
+};
+static int openhere_child(shinstance *psh, union node *n, void *argp)
+{
+	struct openherechild args = *(struct openherechild *)argp;
+
+	shfile_close(&psh->fdtab, args.pip[0]);
+	sh_signal(psh, SIGINT, SH_SIG_IGN);
+	sh_signal(psh, SIGQUIT, SH_SIG_IGN);
+	sh_signal(psh, SIGHUP, SH_SIG_IGN);
+# ifdef SIGTSTP
+	sh_signal(psh, SIGTSTP, SH_SIG_IGN);
+# endif
+	sh_signal(psh, SIGPIPE, SH_SIG_DFL);
+	if (n->type == NHERE)
+		xwrite(psh, args.pip[1], n->nhere.doc->narg.text, args.len);
+	else
+		expandhere(psh, n->nhere.doc, args.pip[1]);
+	return 0;
+}
+
+#endif /* KASH_USE_FORKSHELL2*/
+
+/*
+ * Handle here documents.  Normally we fork off a process to write the
+ * data to a pipe.  If the document is short, we can stuff the data in
+ * the pipe without forking.
+ */
+
+STATIC int
+openhere(shinstance *psh, union node *redir)
+{
+	int pip[2];
+	size_t len = 0;
+
+	if (shfile_pipe(&psh->fdtab, pip) < 0)
+		error(psh, "Pipe call failed");
+	if (redir->type == NHERE) {
+		len = strlen(redir->nhere.doc->narg.text);
+		if (len <= PIPESIZE) {
+			xwrite(psh, pip[1], redir->nhere.doc->narg.text, len);
+			goto out;
+		}
+	}
+#ifdef KASH_USE_FORKSHELL2
+	{
+		struct openherechild args;
+		args.pip[0] = pip[0];
+		args.pip[1] = pip[1];
+		args.len = len;
+		forkshell2(psh, (struct job *)NULL, redir,
+			   FORK_NOJOB | FORK_JUST_IO,
+			   openhere_child, redir, &args, sizeof(args), NULL);
+	}
+#else
+	if (forkshell(psh, (struct job *)NULL, (union node *)NULL, FORK_NOJOB) == 0) {
+		shfile_close(&psh->fdtab, pip[0]);
+		sh_signal(psh, SIGINT, SH_SIG_IGN);
+		sh_signal(psh, SIGQUIT, SH_SIG_IGN);
+		sh_signal(psh, SIGHUP, SH_SIG_IGN);
+#ifdef SIGTSTP
+		sh_signal(psh, SIGTSTP, SH_SIG_IGN);
+#endif
+		sh_signal(psh, SIGPIPE, SH_SIG_DFL);
+		if (redir->type == NHERE)
+			xwrite(psh, pip[1], redir->nhere.doc->narg.text, len);
+		else
+			expandhere(psh, redir->nhere.doc, pip[1]);
+		sh__exit(psh, 0);
+	}
+#endif
+out:
+	shfile_close(&psh->fdtab, pip[1]);
+	return pip[0];
+}
+
+
+
+/*
+ * Undo the effects of the last redirection.
+ */
+
+void
+popredir(shinstance *psh)
+{
+	struct redirtab *rp = psh->redirlist;
+	int i;
+
+	for (i = 0 ; i < 10 ; i++) {
+		if (rp->renamed[i] != EMPTY) {
+			if (i == 0)
+				psh->fd0_redirected--;
+			if (rp->renamed[i] >= 0) {
+				movefd(psh, rp->renamed[i], i);
+			} else {
+				shfile_close(&psh->fdtab, i);
+			}
+		}
+	}
+	INTOFF;
+	psh->redirlist = rp->next;
+	ckfree(psh, rp);
+	INTON;
+}
+
+/*
+ * Undo all redirections.  Called on error or interrupt.
+ */
+
+#ifdef mkinit
+
+INCLUDE "redir.h"
+
+RESET {
+	while (psh->redirlist)
+		popredir(psh);
+}
+
+SHELLPROC {
+	clearredir(psh);
+}
+
+#endif
+
+/* Return true if fd 0 has already been redirected at least once.  */
+int
+fd0_redirected_p(shinstance *psh) {
+        return psh->fd0_redirected != 0;
+}
+
+/*
+ * Discard all saved file descriptors.
+ */
+
+void
+clearredir(shinstance *psh)
+{
+	struct redirtab *rp;
+	int i;
+
+	for (rp = psh->redirlist ; rp ; rp = rp->next) {
+		for (i = 0 ; i < 10 ; i++) {
+			if (rp->renamed[i] >= 0) {
+				shfile_close(&psh->fdtab, rp->renamed[i]);
+			}
+			rp->renamed[i] = EMPTY;
+		}
+	}
+}
+
+
+
+/*
+ * Copy a file descriptor to be >= to.  Returns -1
+ * if the source file descriptor is closed, EMPTY if there are no unused
+ * file descriptors left.
+ */
+
+int
+copyfd(shinstance *psh, int from, int to)
+{
+	int newfd;
+
+	newfd = shfile_fcntl(&psh->fdtab, from, F_DUPFD, to);
+	if (newfd < 0) {
+		if (errno == EMFILE)
+			return EMPTY;
+		error(psh, "%d: %s", from, sh_strerror(psh, errno));
+	}
+	return newfd;
+}
+
+
+/*
+ * Move a file descriptor to be == to.  Returns -1
+ * if the source file descriptor is closed, EMPTY if there are no unused
+ * file descriptors left.
+ */
+
+int
+movefd(shinstance *psh, int from, int to)
+{
+	int newfd;
+
+	newfd = shfile_movefd(&psh->fdtab, from, to);
+	if (newfd < 0) {
+		if (errno == EMFILE)
+			return EMPTY;
+		error(psh, "%d: %s", from, sh_strerror(psh, errno));
+	}
+	return newfd;
+}
+
+
+/*
+ * Move a file descriptor to be >= to.  Returns -1
+ * if the source file descriptor is closed, EMPTY if there are no unused
+ * file descriptors left.
+ */
+
+int
+movefd_above(shinstance *psh, int from, int to)
+{
+	int newfd;
+
+	newfd = shfile_movefd_above(&psh->fdtab, from, to);
+	if (newfd < 0) {
+		if (errno == EMFILE)
+			return EMPTY;
+		error(psh, "%d: %s", from, sh_strerror(psh, errno));
+	}
+	return newfd;
+}
+
diff --git a/src/kash/redir.h b/src/kash/redir.h
new file mode 100644
index 0000000..7e8e16e
--- /dev/null
+++ b/src/kash/redir.h
@@ -0,0 +1,54 @@
+/*	$NetBSD: redir.h,v 1.15 2003/08/07 09:05:37 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)redir.h	8.2 (Berkeley) 5/4/95
+ */
+
+/* flags passed to redirect */
+#define REDIR_PUSH 01		/* save previous values of file descriptors */
+#define REDIR_BACKQ 02		/* save the command output in memory */
+
+union node;
+#ifndef SH_FORKED_MODE
+void subshellinitredir(shinstance *, shinstance *);
+#endif
+void redirect(struct shinstance *, union node *, int);
+void popredir(struct shinstance *);
+int fd0_redirected_p(struct shinstance *);
+struct redirexpfnames;
+void expredircleanup(shinstance *, unsigned);
+void clearredir(struct shinstance *);
+int copyfd(struct shinstance *, int, int);
+int movefd(struct shinstance *, int, int);
+int movefd_above(struct shinstance *, int, int);
+
diff --git a/src/kash/setmode.c b/src/kash/setmode.c
new file mode 100644
index 0000000..02fa1f9
--- /dev/null
+++ b/src/kash/setmode.c
@@ -0,0 +1,472 @@
+/*	$NetBSD: setmode.c,v 1.30 2003/08/07 16:42:56 agc Exp $	*/
+
+/*
+ * Copyright (c) 1989, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Dave Borman at Cray Research, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)setmode.c	8.2 (Berkeley) 3/25/94";
+#else
+__RCSID("$NetBSD: setmode.c,v 1.30 2003/08/07 16:42:56 agc Exp $");
+#endif /* LIBC_SCCS and not lint */
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdlib.h>
+#include "shinstance.h" /* for unistd.h types/defines */
+
+#ifdef SETMODE_DEBUG
+#include <stdio.h>
+#endif
+
+#define	SET_LEN	6		/* initial # of bitcmd struct to malloc */
+#define	SET_LEN_INCR 4		/* # of bitcmd structs to add as needed */
+
+typedef struct bitcmd {
+	char	cmd;
+	char	cmd2;
+	mode_t	bits;
+} BITCMD;
+
+#define	CMD2_CLR	0x01
+#define	CMD2_SET	0x02
+#define	CMD2_GBITS	0x04
+#define	CMD2_OBITS	0x08
+#define	CMD2_UBITS	0x10
+
+static BITCMD	*addcmd(BITCMD *, int, int, int, unsigned int);
+static void	 compress_mode(BITCMD *);
+#ifdef SETMODE_DEBUG
+static void	 dumpmode(BITCMD *);
+#endif
+
+#ifndef _DIAGASSERT
+# define _DIAGASSERT kHlpAssert
+#endif
+
+#ifndef S_ISTXT
+# ifdef S_ISVTX
+#  define S_ISTXT S_ISVTX
+# else
+#  define S_ISTXT 0
+# endif
+#endif /* !S_ISTXT */
+
+/*
+ * Given the old mode and an array of bitcmd structures, apply the operations
+ * described in the bitcmd structures to the old mode, and return the new mode.
+ * Note that there is no '=' command; a strict assignment is just a '-' (clear
+ * bits) followed by a '+' (set bits).
+ */
+mode_t
+kash_getmode(const void *bbox, mode_t omode)
+{
+	const BITCMD *set;
+	mode_t clrval, newmode, value;
+
+	_DIAGASSERT(bbox != NULL);
+
+	set = (const BITCMD *)bbox;
+	newmode = omode;
+	for (value = 0;; set++)
+		switch(set->cmd) {
+		/*
+		 * When copying the user, group or other bits around, we "know"
+		 * where the bits are in the mode so that we can do shifts to
+		 * copy them around.  If we don't use shifts, it gets real
+		 * grundgy with lots of single bit checks and bit sets.
+		 */
+		case 'u':
+			value = (newmode & S_IRWXU) >> 6;
+			goto common;
+
+		case 'g':
+			value = (newmode & S_IRWXG) >> 3;
+			goto common;
+
+		case 'o':
+			value = newmode & S_IRWXO;
+common:			if (set->cmd2 & CMD2_CLR) {
+				clrval =
+				    (set->cmd2 & CMD2_SET) ?  S_IRWXO : value;
+				if (set->cmd2 & CMD2_UBITS)
+					newmode &= ~((clrval<<6) & set->bits);
+				if (set->cmd2 & CMD2_GBITS)
+					newmode &= ~((clrval<<3) & set->bits);
+				if (set->cmd2 & CMD2_OBITS)
+					newmode &= ~(clrval & set->bits);
+			}
+			if (set->cmd2 & CMD2_SET) {
+				if (set->cmd2 & CMD2_UBITS)
+					newmode |= (value<<6) & set->bits;
+				if (set->cmd2 & CMD2_GBITS)
+					newmode |= (value<<3) & set->bits;
+				if (set->cmd2 & CMD2_OBITS)
+					newmode |= value & set->bits;
+			}
+			break;
+
+		case '+':
+			newmode |= set->bits;
+			break;
+
+		case '-':
+			newmode &= ~set->bits;
+			break;
+
+		case 'X':
+			if (omode & (S_IFDIR|S_IXUSR|S_IXGRP|S_IXOTH))
+				newmode |= set->bits;
+			break;
+
+		case '\0':
+		default:
+#ifdef SETMODE_DEBUG
+			(void)printf("getmode:%04o -> %04o\n", omode, newmode);
+#endif
+			return (newmode);
+		}
+}
+
+#define	ADDCMD(a, b, c, d) do {						\
+	if (set >= endset) {						\
+		BITCMD *newset;						\
+		setlen += SET_LEN_INCR;					\
+		newset = sh_realloc(NULL, saveset, sizeof(BITCMD) * setlen);	\
+		if (newset == NULL) {					\
+			sh_free(NULL, saveset);					\
+			return (NULL);					\
+		}							\
+		set = newset + (set - saveset);				\
+		saveset = newset;					\
+		endset = newset + (setlen - 2);				\
+	}								\
+	set = addcmd(set, (a), (b), (c), (d));				\
+} while (/*CONSTCOND*/0)
+
+#define	STANDARD_BITS	(S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
+
+void *
+kash_setmode(shinstance *psh, const char *p)
+{
+	int perm, who;
+	char op, *ep;
+	BITCMD *set, *saveset, *endset;
+	mode_t mask;
+	int equalopdone = 0;	/* pacify gcc */
+	int permXbits, setlen;
+
+	if (!*p)
+		return (NULL);
+
+	/*
+	 * Get a copy of the mask for the permissions that are mask relative.
+	 * Flip the bits, we want what's not set.
+	 */
+        mask = shfile_get_umask(&psh->fdtab);
+
+	setlen = SET_LEN + 2;
+
+	if ((set = sh_malloc(NULL, sizeof(BITCMD) * setlen)) == NULL)
+		return (NULL);
+	saveset = set;
+	endset = set + (setlen - 2);
+
+	/*
+	 * If an absolute number, get it and return; disallow non-octal digits
+	 * or illegal bits.
+	 */
+	if (isdigit((unsigned char)*p)) {
+		perm = (mode_t)strtol(p, &ep, 8);
+		if (*ep || perm & ~(STANDARD_BITS|S_ISTXT)) {
+			sh_free(NULL, saveset);
+			return (NULL);
+		}
+		ADDCMD('=', (STANDARD_BITS|S_ISTXT), perm, mask);
+		set->cmd = 0;
+		return (saveset);
+	}
+
+	/*
+	 * Build list of structures to set/clear/copy bits as described by
+	 * each clause of the symbolic mode.
+	 */
+	for (;;) {
+		/* First, find out which bits might be modified. */
+		for (who = 0;; ++p) {
+			switch (*p) {
+			case 'a':
+				who |= STANDARD_BITS;
+				break;
+			case 'u':
+				who |= S_ISUID|S_IRWXU;
+				break;
+			case 'g':
+				who |= S_ISGID|S_IRWXG;
+				break;
+			case 'o':
+				who |= S_IRWXO;
+				break;
+			default:
+				goto getop;
+			}
+		}
+
+getop:		if ((op = *p++) != '+' && op != '-' && op != '=') {
+			sh_free(NULL, saveset);
+			return (NULL);
+		}
+		if (op == '=')
+			equalopdone = 0;
+
+		who &= ~S_ISTXT;
+		for (perm = 0, permXbits = 0;; ++p) {
+			switch (*p) {
+			case 'r':
+				perm |= S_IRUSR|S_IRGRP|S_IROTH;
+				break;
+			case 's':
+				/*
+				 * If specific bits where requested and
+				 * only "other" bits ignore set-id.
+				 */
+				if (who == 0 || (who & ~S_IRWXO))
+					perm |= S_ISUID|S_ISGID;
+				break;
+			case 't':
+				/*
+				 * If specific bits where requested and
+				 * only "other" bits ignore set-id.
+				 */
+				if (who == 0 || (who & ~S_IRWXO)) {
+					who |= S_ISTXT;
+					perm |= S_ISTXT;
+				}
+				break;
+			case 'w':
+				perm |= S_IWUSR|S_IWGRP|S_IWOTH;
+				break;
+			case 'X':
+				permXbits = S_IXUSR|S_IXGRP|S_IXOTH;
+				break;
+			case 'x':
+				perm |= S_IXUSR|S_IXGRP|S_IXOTH;
+				break;
+			case 'u':
+			case 'g':
+			case 'o':
+				/*
+				 * When ever we hit 'u', 'g', or 'o', we have
+				 * to flush out any partial mode that we have,
+				 * and then do the copying of the mode bits.
+				 */
+				if (perm) {
+					ADDCMD(op, who, perm, mask);
+					perm = 0;
+				}
+				if (op == '=')
+					equalopdone = 1;
+				if (op == '+' && permXbits) {
+					ADDCMD('X', who, permXbits, mask);
+					permXbits = 0;
+				}
+				ADDCMD(*p, who, op, mask);
+				break;
+
+			default:
+				/*
+				 * Add any permissions that we haven't already
+				 * done.
+				 */
+				if (perm || (op == '=' && !equalopdone)) {
+					if (op == '=')
+						equalopdone = 1;
+					ADDCMD(op, who, perm, mask);
+					perm = 0;
+				}
+				if (permXbits) {
+					ADDCMD('X', who, permXbits, mask);
+					permXbits = 0;
+				}
+				goto apply;
+			}
+		}
+
+apply:		if (!*p)
+			break;
+		if (*p != ',')
+			goto getop;
+		++p;
+	}
+	set->cmd = 0;
+#ifdef SETMODE_DEBUG
+	(void)printf("Before compress_mode()\n");
+	dumpmode(saveset);
+#endif
+	compress_mode(saveset);
+#ifdef SETMODE_DEBUG
+	(void)printf("After compress_mode()\n");
+	dumpmode(saveset);
+#endif
+	return (saveset);
+}
+
+static BITCMD *
+addcmd(set, op, who, oparg, mask)
+	BITCMD *set;
+	int oparg, who;
+	int op;
+	unsigned int mask;
+{
+
+	_DIAGASSERT(set != NULL);
+
+	switch (op) {
+	case '=':
+		set->cmd = '-';
+		set->bits = who ? who : STANDARD_BITS;
+		set++;
+
+		op = '+';
+		/* FALLTHROUGH */
+	case '+':
+	case '-':
+	case 'X':
+		set->cmd = op;
+		set->bits = (who ? (unsigned int)who : mask) & (unsigned int)oparg;
+		break;
+
+	case 'u':
+	case 'g':
+	case 'o':
+		set->cmd = op;
+		if (who) {
+			set->cmd2 = ((who & S_IRUSR) ? CMD2_UBITS : 0) |
+				    ((who & S_IRGRP) ? CMD2_GBITS : 0) |
+				    ((who & S_IROTH) ? CMD2_OBITS : 0);
+			set->bits = (mode_t)~0;
+		} else {
+			set->cmd2 = CMD2_UBITS | CMD2_GBITS | CMD2_OBITS;
+			set->bits = mask;
+		}
+
+		if (oparg == '+')
+			set->cmd2 |= CMD2_SET;
+		else if (oparg == '-')
+			set->cmd2 |= CMD2_CLR;
+		else if (oparg == '=')
+			set->cmd2 |= CMD2_SET|CMD2_CLR;
+		break;
+	}
+	return (set + 1);
+}
+
+#ifdef SETMODE_DEBUG
+static void
+dumpmode(set)
+	BITCMD *set;
+{
+
+	_DIAGASSERT(set != NULL);
+
+	for (; set->cmd; ++set)
+		(void)printf("cmd: '%c' bits %04o%s%s%s%s%s%s\n",
+		    set->cmd, set->bits, set->cmd2 ? " cmd2:" : "",
+		    set->cmd2 & CMD2_CLR ? " CLR" : "",
+		    set->cmd2 & CMD2_SET ? " SET" : "",
+		    set->cmd2 & CMD2_UBITS ? " UBITS" : "",
+		    set->cmd2 & CMD2_GBITS ? " GBITS" : "",
+		    set->cmd2 & CMD2_OBITS ? " OBITS" : "");
+}
+#endif
+
+/*
+ * Given an array of bitcmd structures, compress by compacting consecutive
+ * '+', '-' and 'X' commands into at most 3 commands, one of each.  The 'u',
+ * 'g' and 'o' commands continue to be separate.  They could probably be
+ * compacted, but it's not worth the effort.
+ */
+static void
+compress_mode(set)
+	BITCMD *set;
+{
+	BITCMD *nset;
+	int setbits, clrbits, Xbits, op;
+
+	_DIAGASSERT(set != NULL);
+
+	for (nset = set;;) {
+		/* Copy over any 'u', 'g' and 'o' commands. */
+		while ((op = nset->cmd) != '+' && op != '-' && op != 'X') {
+			*set++ = *nset++;
+			if (!op)
+				return;
+		}
+
+		for (setbits = clrbits = Xbits = 0;; nset++) {
+			if ((op = nset->cmd) == '-') {
+				clrbits |= nset->bits;
+				setbits &= ~nset->bits;
+				Xbits &= ~nset->bits;
+			} else if (op == '+') {
+				setbits |= nset->bits;
+				clrbits &= ~nset->bits;
+				Xbits &= ~nset->bits;
+			} else if (op == 'X')
+				Xbits |= nset->bits & ~setbits;
+			else
+				break;
+		}
+		if (clrbits) {
+			set->cmd = '-';
+			set->cmd2 = 0;
+			set->bits = clrbits;
+			set++;
+		}
+		if (setbits) {
+			set->cmd = '+';
+			set->cmd2 = 0;
+			set->bits = setbits;
+			set++;
+		}
+		if (Xbits) {
+			set->cmd = 'X';
+			set->cmd2 = 0;
+			set->bits = Xbits;
+			set++;
+		}
+	}
+}
diff --git a/src/kash/sh.1 b/src/kash/sh.1
new file mode 100644
index 0000000..a116652
--- /dev/null
+++ b/src/kash/sh.1
@@ -0,0 +1,1949 @@
+.\"	$NetBSD: sh.1,v 1.80 2005/05/24 00:03:52 wiz Exp $
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Kenneth Almquist.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)sh.1	8.6 (Berkeley) 5/4/95
+.\"
+.Dd May 7, 2005
+.Os
+.Dt SH 1
+.Sh NAME
+.Nm sh
+.Nd command interpreter (shell)
+.Sh SYNOPSIS
+.Nm
+.Bk -words
+.Op Fl aCefnuvxIimqVEb
+.Op Cm +aCefnuvxIimqVEb
+.Ek
+.Bk -words
+.Op Fl o Ar option_name
+.Op Cm +o Ar option_name
+.Ek
+.Bk -words
+.Op Ar command_file Oo Ar argument ... Oc
+.Ek
+.Nm
+.Fl c
+.Bk -words
+.Op Fl aCefnuvxIimqVEb
+.Op Cm +aCefnuvxIimqVEb
+.Ek
+.Bk -words
+.Op Fl o Ar option_name
+.Op Cm +o Ar option_name
+.Ek
+.Bk -words
+.Ar command_string
+.Op Ar command_name Oo Ar argument ... Oc
+.Ek
+.Nm
+.Fl s
+.Bk -words
+.Op Fl aCefnuvxIimqVEb
+.Op Cm +aCefnuvxIimqVEb
+.Ek
+.Bk -words
+.Op Fl o Ar option_name
+.Op Cm +o Ar option_name
+.Ek
+.Bk -words
+.Op Ar argument ...
+.Ek
+.Sh DESCRIPTION
+.Nm
+is the standard command interpreter for the system.
+The current version of
+.Nm
+is in the process of being changed to conform with the
+.Tn POSIX
+1003.2 and 1003.2a specifications for the shell.
+This version has many
+features which make it appear similar in some respects to the Korn shell,
+but it is not a Korn shell clone (see
+.Xr ksh 1 ) .
+Only features designated by
+.Tn POSIX ,
+plus a few Berkeley extensions, are being incorporated into this shell.
+.\" We expect
+.\" .Tn POSIX
+.\" conformance by the time 4.4 BSD is released.
+This man page is not intended
+to be a tutorial or a complete specification of the shell.
+.Ss Overview
+The shell is a command that reads lines from either a file or the
+terminal, interprets them, and generally executes other commands.
+It is the program that is running when a user logs into the system
+(although a user can select a different shell with the
+.Xr chsh 1
+command).
+The shell implements a language that has flow control
+constructs, a macro facility that provides a variety of features in
+addition to data storage, along with built in history and line editing
+capabilities.
+It incorporates many features to aid interactive use and
+has the advantage that the interpretative language is common to both
+interactive and non-interactive use (shell scripts).
+That is, commands
+can be typed directly to the running shell or can be put into a file and
+the file can be executed directly by the shell.
+.Ss Invocation
+If no args are present and if the standard input of the shell
+is connected to a terminal (or if the
+.Fl i
+flag is set),
+and the
+.Fl c
+option is not present, the shell is considered an interactive shell.
+An interactive shell generally prompts before each command and handles
+programming and command errors differently (as described below).
+When first starting,
+the shell inspects argument 0, and if it begins with a dash
+.Sq - ,
+the shell is also considered
+a login shell.
+This is normally done automatically by the system
+when the user first logs in.
+A login shell first reads commands
+from the files
+.Pa /etc/profile
+and
+.Pa .profile
+if they exist.
+If the environment variable
+.Ev ENV
+is set on entry to a shell, or is set in the
+.Pa .profile
+of a login shell, the shell next reads
+commands from the file named in
+.Ev ENV .
+Therefore, a user should place commands that are to be executed only at
+login time in the
+.Pa .profile
+file, and commands that are executed for every shell inside the
+.Ev ENV
+file.
+To set the
+.Ev ENV
+variable to some file, place the following line in your
+.Pa .profile
+of your home directory
+.Pp
+.Dl ENV=$HOME/.shinit; export ENV
+.Pp
+substituting for
+.Dq .shinit
+any filename you wish.
+Since the
+.Ev ENV
+file is read for every invocation of the shell, including shell scripts
+and non-interactive shells, the following paradigm is useful for
+restricting commands in the
+.Ev ENV
+file to interactive invocations.
+Place commands within the
+.Dq case
+and
+.Dq esac
+below (these commands are described later):
+.Pp
+.Bl -item -compact -offset indent
+.It
+.Li case $- in *i*)
+.Bl -item -compact -offset indent
+.It
+.Li # commands for interactive use only
+.It
+.Li ...
+.El
+.It
+.Li esac
+.El
+.Pp
+If command line arguments besides the options have been specified, then
+the shell treats the first argument as the name of a file from which to
+read commands (a shell script), and the remaining arguments are set as the
+positional parameters of the shell ($1, $2, etc).
+Otherwise, the shell
+reads commands from its standard input.
+.Ss Argument List Processing
+All of the single letter options have a corresponding name that can be
+used as an argument to the
+.Fl o
+option.
+The set
+.Fl o
+name is provided next to the single letter option in
+the description below.
+Specifying a dash
+.Dq -
+turns the option on, while using a plus
+.Dq +
+disables the option.
+The following options can be set from the command line or
+with the
+.Ic set
+builtin (described later).
+.Bl -tag -width aaaallexportfoo -offset indent
+.It Fl a Em allexport
+Export all variables assigned to.
+.It Fl c
+Read commands from the
+.Ar command_string
+operand instead of from the standard input.
+Special parameter 0 will be set from the
+.Ar command_name
+operand and the positional parameters ($1, $2, etc.)
+set from the remaining argument operands.
+.It Fl C Em noclobber
+Don't overwrite existing files with
+.Dq \*[Gt] .
+.It Fl e Em errexit
+If not interactive, exit immediately if any untested command fails.
+The exit status of a command is considered to be
+explicitly tested if the command is used to control an
+.Ic if ,
+.Ic elif ,
+.Ic while ,
+or
+.Ic until ;
+or if the command is the left hand operand of an
+.Dq \*[Am]\*[Am]
+or
+.Dq ||
+operator.
+.It Fl f Em noglob
+Disable pathname expansion.
+.It Fl n Em noexec
+If not interactive, read commands but do not execute them.
+This is useful for checking the syntax of shell scripts.
+.It Fl u Em nounset
+Write a message to standard error when attempting to expand a variable
+that is not set, and if the shell is not interactive, exit immediately.
+.It Fl v Em verbose
+The shell writes its input to standard error as it is read.
+Useful for debugging.
+.It Fl x Em xtrace
+Write each command to standard error (preceded by a
+.Sq +\  )
+before it is executed.
+Useful for debugging.
+.It Fl q Em quietprofile
+If the
+.Fl v
+or
+.Fl x
+options have been set, do not apply them when reading
+initialization files, these being
+.Pa /etc/profile ,
+.Pa .profile ,
+and the file specified by the
+.Ev ENV
+environment variable.
+.It Fl I Em ignoreeof
+Ignore EOF's from input when interactive.
+.It Fl i Em interactive
+Force the shell to behave interactively.
+.It Fl m Em monitor
+Turn on job control (set automatically when interactive).
+.It Fl s Em stdin
+Read commands from standard input (set automatically if no file arguments
+are present).
+This option has no effect when set after the shell has
+already started running (i.e. with
+.Ic set ) .
+.It Fl V Em vi
+Enable the built-in
+.Xr vi 1
+command line editor (disables
+.Fl E
+if it has been set).
+(See the
+.Sx Command Line Editing
+section below.)
+.It Fl E Em emacs
+Enable the built-in emacs style
+command line editor (disables
+.Fl V
+if it has been set).
+(See the
+.Sx Command Line Editing
+section below.)
+.It Fl b Em notify
+Enable asynchronous notification of background job completion.
+(UNIMPLEMENTED for 4.4alpha)
+.It "\ \ " Em cdprint
+Make an interactive shell always print the new directory name when
+changed by the
+.Ic cd
+command.
+.It "\ \ " Em tabcomplete
+Enables filename completion in the command line editor.
+Typing a tab character will extend the current input word to match a
+filename.
+If more than one filename matches it is only extended to be the common prefix.
+Typing a second tab character will list all the matching names.
+.El
+.Ss Lexical Structure
+The shell reads input in terms of lines from a file and breaks it up into
+words at whitespace (blanks and tabs), and at certain sequences of
+characters that are special to the shell called
+.Dq operators .
+There are two types of operators: control operators and redirection
+operators (their meaning is discussed later).
+Following is a list of operators:
+.Bl -ohang -offset indent
+.It "Control operators:"
+.Dl \*[Am]  \*[Am]\*[Am]  \&(  \&)  \&;  ;; | || \*[Lt]newline\*[Gt]
+.It "Redirection operators:"
+.Dl \*[Lt]  \*[Gt]  \*[Gt]|  \*[Lt]\*[Lt]  \*[Gt]\*[Gt]  \*[Lt]\*[Am]  \*[Gt]\*[Am]  \*[Lt]\*[Lt]-  \*[Lt]\*[Gt]
+.El
+.Ss Quoting
+Quoting is used to remove the special meaning of certain characters or
+words to the shell, such as operators, whitespace, or keywords.
+There are three types of quoting: matched single quotes,
+matched double quotes, and backslash.
+.Ss Backslash
+A backslash preserves the literal meaning of the following
+character, with the exception of
+.Aq newline .
+A backslash preceding a
+.Aq newline
+is treated as a line continuation.
+.Ss Single Quotes
+Enclosing characters in single quotes preserves the literal meaning of all
+the characters (except single quotes, making it impossible to put
+single-quotes in a single-quoted string).
+.Ss Double Quotes
+Enclosing characters within double quotes preserves the literal
+meaning of all characters except dollarsign
+.Pq $ ,
+backquote
+.Pq ` ,
+and backslash
+.Pq \e .
+The backslash inside double quotes is historically weird, and serves to
+quote only the following characters:
+.Dl $  `  \*q  \e  \*[Lt]newline\*[Gt] .
+Otherwise it remains literal.
+.Ss Reserved Words
+Reserved words are words that have special meaning to the
+shell and are recognized at the beginning of a line and
+after a control operator.
+The following are reserved words:
+.Bl -column while while while while while -offset indent
+.It ! Ta elif Ta fi Ta while Ta case
+.It else Ta for Ta then Ta { Ta }
+.It do Ta done Ta until Ta if Ta esac
+.El
+.Pp
+Their meaning is discussed later.
+.Ss Aliases
+An alias is a name and corresponding value set using the
+.Ic alias
+builtin command.
+Whenever a reserved word may occur (see above),
+and after checking for reserved words, the shell
+checks the word to see if it matches an alias.
+If it does, it replaces it in the input stream with its value.
+For example, if there is an alias called
+.Dq lf
+with the value
+.Dq "ls -F" ,
+then the input:
+.Pp
+.Dl lf foobar Aq return
+.Pp
+would become
+.Pp
+.Dl ls -F foobar Aq return
+.Pp
+Aliases provide a convenient way for naive users to create shorthands for
+commands without having to learn how to create functions with arguments.
+They can also be used to create lexically obscure code.
+This use is discouraged.
+.Ss Commands
+The shell interprets the words it reads according to a language, the
+specification of which is outside the scope of this man page (refer to the
+BNF in the
+.Tn POSIX
+1003.2 document).
+Essentially though, a line is read and if the first
+word of the line (or after a control operator) is not a reserved word,
+then the shell has recognized a simple command.
+Otherwise, a complex
+command or some other special construct may have been recognized.
+.Ss Simple Commands
+If a simple command has been recognized, the shell performs
+the following actions:
+.Bl -enum -offset indent
+.It
+Leading words of the form
+.Dq name=value
+are stripped off and assigned to the environment of the simple command.
+Redirection operators and their arguments (as described below) are
+stripped off and saved for processing.
+.It
+The remaining words are expanded as described in
+the section called
+.Dq Expansions ,
+and the first remaining word is considered the command name and the
+command is located.
+The remaining words are considered the arguments of the command.
+If no command name resulted, then the
+.Dq name=value
+variable assignments recognized in item 1 affect the current shell.
+.It
+Redirections are performed as described in the next section.
+.El
+.Ss Redirections
+Redirections are used to change where a command reads its input or sends
+its output.
+In general, redirections open, close, or duplicate an
+existing reference to a file.
+The overall format used for redirection is:
+.Pp
+.Dl [n] Va redir-op Ar file
+.Pp
+where
+.Va redir-op
+is one of the redirection operators mentioned previously.
+Following is a list of the possible redirections.
+The
+.Bq n
+is an optional number, as in
+.Sq 3
+(not
+.Sq Bq 3 ) ,
+that refers to a file descriptor.
+.Bl -tag -width aaabsfiles -offset indent
+.It [n] Ns \*[Gt] file
+Redirect standard output (or n) to file.
+.It [n] Ns \*[Gt]| file
+Same, but override the
+.Fl C
+option.
+.It [n] Ns \*[Gt]\*[Gt] file
+Append standard output (or n) to file.
+.It [n] Ns \*[Lt] file
+Redirect standard input (or n) from file.
+.It [n1] Ns \*[Lt]\*[Am] Ns n2
+Duplicate standard input (or n1) from file descriptor n2.
+.It [n] Ns \*[Lt]\*[Am]-
+Close standard input (or n).
+.It [n1] Ns \*[Gt]\*[Am] Ns n2
+Duplicate standard output (or n1) to n2.
+.It [n] Ns \*[Gt]\*[Am]-
+Close standard output (or n).
+.It [n] Ns \*[Lt]\*[Gt] file
+Open file for reading and writing on standard input (or n).
+.El
+.Pp
+The following redirection is often called a
+.Dq here-document .
+.Bl -item -offset indent
+.It
+.Li [n]\*[Lt]\*[Lt] delimiter
+.Dl here-doc-text ...
+.Li delimiter
+.El
+.Pp
+All the text on successive lines up to the delimiter is saved away and
+made available to the command on standard input, or file descriptor n if
+it is specified.
+If the delimiter as specified on the initial line is
+quoted, then the here-doc-text is treated literally, otherwise the text is
+subjected to parameter expansion, command substitution, and arithmetic
+expansion (as described in the section on
+.Dq Expansions ) .
+If the operator is
+.Dq \*[Lt]\*[Lt]-
+instead of
+.Dq \*[Lt]\*[Lt] ,
+then leading tabs in the here-doc-text are stripped.
+.Ss Search and Execution
+There are three types of commands: shell functions, builtin commands, and
+normal programs -- and the command is searched for (by name) in that order.
+They each are executed in a different way.
+.Pp
+When a shell function is executed, all of the shell positional parameters
+(except $0, which remains unchanged) are set to the arguments of the shell
+function.
+The variables which are explicitly placed in the environment of
+the command (by placing assignments to them before the function name) are
+made local to the function and are set to the values given.
+Then the command given in the function definition is executed.
+The positional parameters are restored to their original values
+when the command completes.
+This all occurs within the current shell.
+.Pp
+Shell builtins are executed internally to the shell, without spawning a
+new process.
+.Pp
+Otherwise, if the command name doesn't match a function or builtin, the
+command is searched for as a normal program in the file system (as
+described in the next section).
+When a normal program is executed, the shell runs the program,
+passing the arguments and the environment to the program.
+If the program is not a normal executable file (i.e., if it does
+not begin with the "magic number" whose
+.Tn ASCII
+representation is "#!", so
+.Xr execve 2
+returns
+.Er ENOEXEC
+then) the shell will interpret the program in a subshell.
+The child shell will reinitialize itself in this case,
+so that the effect will be as if a
+new shell had been invoked to handle the ad-hoc shell script, except that
+the location of hashed commands located in the parent shell will be
+remembered by the child.
+.Pp
+Note that previous versions of this document and the source code itself
+misleadingly and sporadically refer to a shell script without a magic
+number as a "shell procedure".
+.Ss Path Search
+When locating a command, the shell first looks to see if it has a shell
+function by that name.
+Then it looks for a builtin command by that name.
+If a builtin command is not found, one of two things happen:
+.Bl -enum
+.It
+Command names containing a slash are simply executed without performing
+any searches.
+.It
+The shell searches each entry in
+.Ev PATH
+in turn for the command.
+The value of the
+.Ev PATH
+variable should be a series of entries separated by colons.
+Each entry consists of a directory name.
+The current directory may be indicated
+implicitly by an empty directory name, or explicitly by a single period.
+.El
+.Ss Command Exit Status
+Each command has an exit status that can influence the behavior
+of other shell commands.
+The paradigm is that a command exits
+with zero for normal or success, and non-zero for failure,
+error, or a false indication.
+The man page for each command
+should indicate the various exit codes and what they mean.
+Additionally, the builtin commands return exit codes, as does
+an executed shell function.
+.Pp
+If a command consists entirely of variable assignments then the
+exit status of the command is that of the last command substitution
+if any, otherwise 0.
+.Ss Complex Commands
+Complex commands are combinations of simple commands with control
+operators or reserved words, together creating a larger complex command.
+More generally, a command is one of the following:
+.Bl -bullet
+.It
+simple command
+.It
+pipeline
+.It
+list or compound-list
+.It
+compound command
+.It
+function definition
+.El
+.Pp
+Unless otherwise stated, the exit status of a command is that of the last
+simple command executed by the command.
+.Ss Pipelines
+A pipeline is a sequence of one or more commands separated
+by the control operator |.
+The standard output of all but
+the last command is connected to the standard input
+of the next command.
+The standard output of the last
+command is inherited from the shell, as usual.
+.Pp
+The format for a pipeline is:
+.Pp
+.Dl [!] command1 [ | command2 ...]
+.Pp
+The standard output of command1 is connected to the standard input of
+command2.
+The standard input, standard output, or both of a command is
+considered to be assigned by the pipeline before any redirection specified
+by redirection operators that are part of the command.
+.Pp
+If the pipeline is not in the background (discussed later), the shell
+waits for all commands to complete.
+.Pp
+If the reserved word ! does not precede the pipeline, the exit status is
+the exit status of the last command specified in the pipeline.
+Otherwise, the exit status is the logical NOT of the exit status of the
+last command.
+That is, if the last command returns zero, the exit status
+is 1; if the last command returns greater than zero, the exit status is
+zero.
+.Pp
+Because pipeline assignment of standard input or standard output or both
+takes place before redirection, it can be modified by redirection.
+For example:
+.Pp
+.Dl $ command1 2\*[Gt]\*[Am]1 | command2
+.Pp
+sends both the standard output and standard error of command1
+to the standard input of command2.
+.Pp
+A ; or
+.Aq newline
+terminator causes the preceding AND-OR-list (described
+next) to be executed sequentially; a \*[Am] causes asynchronous execution of
+the preceding AND-OR-list.
+.Pp
+Note that unlike some other shells, each process in the pipeline is a
+child of the invoking shell (unless it is a shell builtin, in which case
+it executes in the current shell -- but any effect it has on the
+environment is wiped).
+.Ss Background Commands -- \*[Am]
+If a command is terminated by the control operator ampersand (\*[Am]), the
+shell executes the command asynchronously -- that is, the shell does not
+wait for the command to finish before executing the next command.
+.Pp
+The format for running a command in background is:
+.Pp
+.Dl command1 \*[Am] [command2 \*[Am] ...]
+.Pp
+If the shell is not interactive, the standard input of an asynchronous
+command is set to
+.Pa /dev/null .
+.Ss Lists -- Generally Speaking
+A list is a sequence of zero or more commands separated by newlines,
+semicolons, or ampersands, and optionally terminated by one of these three
+characters.
+The commands in a list are executed in the order they are written.
+If command is followed by an ampersand, the shell starts the
+command and immediately proceed onto the next command; otherwise it waits
+for the command to terminate before proceeding to the next one.
+.Ss Short-Circuit List Operators
+.Dq \*[Am]\*[Am]
+and
+.Dq ||
+are AND-OR list operators.
+.Dq \*[Am]\*[Am]
+executes the first command, and then executes the second command if and only
+if the exit status of the first command is zero.
+.Dq ||
+is similar, but executes the second command if and only if the exit status
+of the first command is nonzero.
+.Dq \*[Am]\*[Am]
+and
+.Dq ||
+both have the same priority.
+Note that these operators are left-associative, so
+.Dq true || echo bar && echo baz
+writes
+.Dq baz
+and nothing else.
+This is not the way it works in C.
+.Ss Flow-Control Constructs -- if, while, for, case
+The syntax of the if command is
+.Bd -literal -offset indent
+if list
+then list
+[ elif list
+then    list ] ...
+[ else list ]
+fi
+.Ed
+.Pp
+The syntax of the while command is
+.Bd -literal -offset indent
+while list
+do   list
+done
+.Ed
+.Pp
+The two lists are executed repeatedly while the exit status of the
+first list is zero.
+The until command is similar, but has the word
+until in place of while, which causes it to
+repeat until the exit status of the first list is zero.
+.Pp
+The syntax of the for command is
+.Bd -literal -offset indent
+for variable in word ...
+do   list
+done
+.Ed
+.Pp
+The words are expanded, and then the list is executed repeatedly with the
+variable set to each word in turn.
+do and done may be replaced with
+.Dq {
+and
+.Dq } .
+.Pp
+The syntax of the break and continue command is
+.Bd -literal -offset indent
+break [ num ]
+continue [ num ]
+.Ed
+.Pp
+Break terminates the num innermost for or while loops.
+Continue continues with the next iteration of the innermost loop.
+These are implemented as builtin commands.
+.Pp
+The syntax of the case command is
+.Bd -literal -offset indent
+case word in
+pattern) list ;;
+\&...
+esac
+.Ed
+.Pp
+The pattern can actually be one or more patterns (see
+.Sx Shell Patterns
+described later), separated by
+.Dq \*(Ba
+characters.
+.Ss Grouping Commands Together
+Commands may be grouped by writing either
+.Pp
+.Dl (list)
+.Pp
+or
+.Pp
+.Dl { list; }
+.Pp
+The first of these executes the commands in a subshell.
+Builtin commands grouped into a (list) will not affect the current shell.
+The second form does not fork another shell so is slightly more efficient.
+Grouping commands together this way allows you to redirect
+their output as though they were one program:
+.Pp
+.Bd -literal -offset indent
+{ echo -n \*q hello \*q ; echo \*q world" ; } \*[Gt] greeting
+.Ed
+.Pp
+Note that
+.Dq }
+must follow a control operator (here,
+.Dq \&; )
+so that it is recognized as a reserved word and not as another command argument.
+.Ss Functions
+The syntax of a function definition is
+.Pp
+.Dl name ( ) command
+.Pp
+A function definition is an executable statement; when executed it
+installs a function named name and returns an exit status of zero.
+The command is normally a list enclosed between
+.Dq {
+and
+.Dq } .
+.Pp
+Variables may be declared to be local to a function by using a local
+command.
+This should appear as the first statement of a function, and the syntax is
+.Pp
+.Dl local [ variable | - ] ...
+.Pp
+Local is implemented as a builtin command.
+.Pp
+When a variable is made local, it inherits the initial value and exported
+and readonly flags from the variable with the same name in the surrounding
+scope, if there is one.
+Otherwise, the variable is initially unset.
+The shell uses dynamic scoping, so that if you make the variable x local to
+function f, which then calls function g, references to the variable x made
+inside g will refer to the variable x declared inside f, not to the global
+variable named x.
+.Pp
+The only special parameter that can be made local is
+.Dq - .
+Making
+.Dq -
+local any shell options that are changed via the set command inside the
+function to be restored to their original values when the function
+returns.
+.Pp
+The syntax of the return command is
+.Pp
+.Dl return [ exitstatus ]
+.Pp
+It terminates the currently executing function.
+Return is implemented as a builtin command.
+.Ss Variables and Parameters
+The shell maintains a set of parameters.
+A parameter denoted by a name is called a variable.
+When starting up, the shell turns all the environment
+variables into shell variables.
+New variables can be set using the form
+.Pp
+.Dl name=value
+.Pp
+Variables set by the user must have a name consisting solely of
+alphabetics, numerics, and underscores - the first of which must not be
+numeric.
+A parameter can also be denoted by a number or a special
+character as explained below.
+.Ss Positional Parameters
+A positional parameter is a parameter denoted by a number (n \*[Gt] 0).
+The shell sets these initially to the values of its command line arguments
+that follow the name of the shell script.
+The
+.Ic set
+builtin can also be used to set or reset them.
+.Ss Special Parameters
+A special parameter is a parameter denoted by one of the following special
+characters.
+The value of the parameter is listed next to its character.
+.Bl -tag -width thinhyphena
+.It *
+Expands to the positional parameters, starting from one.
+When the
+expansion occurs within a double-quoted string it expands to a single
+field with the value of each parameter separated by the first character of
+the
+.Ev IFS
+variable, or by a
+.Aq space
+if
+.Ev IFS
+is unset.
+.It @
+Expands to the positional parameters, starting from one.
+When the expansion occurs within double-quotes, each positional
+parameter expands as a separate argument.
+If there are no positional parameters, the
+expansion of @ generates zero arguments, even when @ is
+double-quoted.
+What this basically means, for example, is
+if $1 is
+.Dq abc
+and $2 is
+.Dq def ghi ,
+then
+.Qq $@
+expands to
+the two arguments:
+.Pp
+.Sm off
+.Dl \*q abc \*q \  \*q def\ ghi \*q
+.Sm on
+.It #
+Expands to the number of positional parameters.
+.It \&?
+Expands to the exit status of the most recent pipeline.
+.It - (Hyphen.)
+Expands to the current option flags (the single-letter
+option names concatenated into a string) as specified on
+invocation, by the set builtin command, or implicitly
+by the shell.
+.It $
+Expands to the process ID of the invoked shell.
+A subshell retains the same value of $ as its parent.
+.It \&!
+Expands to the process ID of the most recent background
+command executed from the current shell.
+For a pipeline, the process ID is that of the last command in the pipeline.
+.It 0 (Zero.)
+Expands to the name of the shell or shell script.
+.El
+.Ss Word Expansions
+This clause describes the various expansions that are performed on words.
+Not all expansions are performed on every word, as explained later.
+.Pp
+Tilde expansions, parameter expansions, command substitutions, arithmetic
+expansions, and quote removals that occur within a single word expand to a
+single field.
+It is only field splitting or pathname expansion that can
+create multiple fields from a single word.
+The single exception to this
+rule is the expansion of the special parameter @ within double-quotes, as
+was described above.
+.Pp
+The order of word expansion is:
+.Bl -enum
+.It
+Tilde Expansion, Parameter Expansion, Command Substitution,
+Arithmetic Expansion (these all occur at the same time).
+.It
+Field Splitting is performed on fields
+generated by step (1) unless the
+.Ev IFS
+variable is null.
+.It
+Pathname Expansion (unless set
+.Fl f
+is in effect).
+.It
+Quote Removal.
+.El
+.Pp
+The $ character is used to introduce parameter expansion, command
+substitution, or arithmetic evaluation.
+.Ss Tilde Expansion (substituting a user's home directory)
+A word beginning with an unquoted tilde character (~) is
+subjected to tilde expansion.
+All the characters up to
+a slash (/) or the end of the word are treated as a username
+and are replaced with the user's home directory.
+If the username is missing (as in
+.Pa ~/foobar ) ,
+the tilde is replaced with the value of the
+.Va HOME
+variable (the current user's home directory).
+.Ss Parameter Expansion
+The format for parameter expansion is as follows:
+.Pp
+.Dl ${expression}
+.Pp
+where expression consists of all characters until the matching
+.Dq } .
+Any
+.Dq }
+escaped by a backslash or within a quoted string, and characters in
+embedded arithmetic expansions, command substitutions, and variable
+expansions, are not examined in determining the matching
+.Dq } .
+.Pp
+The simplest form for parameter expansion is:
+.Pp
+.Dl ${parameter}
+.Pp
+The value, if any, of parameter is substituted.
+.Pp
+The parameter name or symbol can be enclosed in braces, which are
+optional except for positional parameters with more than one digit or
+when parameter is followed by a character that could be interpreted as
+part of the name.
+If a parameter expansion occurs inside double-quotes:
+.Bl -enum
+.It
+Pathname expansion is not performed on the results of the expansion.
+.It
+Field splitting is not performed on the results of the
+expansion, with the exception of the special rules for @.
+.El
+.Pp
+In addition, a parameter expansion can be modified by using one of the
+following formats.
+.Bl -tag -width aaparameterwordaaaaa
+.It ${parameter:-word}
+Use Default Values.
+If parameter is unset or null, the expansion of word
+is substituted; otherwise, the value of parameter is substituted.
+.It ${parameter:=word}
+Assign Default Values.
+If parameter is unset or null, the expansion of
+word is assigned to parameter.
+In all cases, the final value of parameter is substituted.
+Only variables, not positional parameters or special
+parameters, can be assigned in this way.
+.It ${parameter:?[word]}
+Indicate Error if Null or Unset.
+If parameter is unset or null, the
+expansion of word (or a message indicating it is unset if word is omitted)
+is written to standard error and the shell exits with a nonzero exit status.
+Otherwise, the value of parameter is substituted.
+An interactive shell need not exit.
+.It ${parameter:+word}
+Use Alternative Value.
+If parameter is unset or null, null is
+substituted; otherwise, the expansion of word is substituted.
+.El
+.Pp
+In the parameter expansions shown previously, use of the colon in the
+format results in a test for a parameter that is unset or null; omission
+of the colon results in a test for a parameter that is only unset.
+.Bl -tag -width aaparameterwordaaaaa
+.It ${#parameter}
+String Length.
+The length in characters of the value of parameter.
+.El
+.Pp
+The following four varieties of parameter expansion provide for substring
+processing.
+In each case, pattern matching notation (see
+.Sx Shell Patterns ) ,
+rather than regular expression notation, is used to evaluate the patterns.
+If parameter is * or @, the result of the expansion is unspecified.
+Enclosing the full parameter expansion string in double-quotes does not
+cause the following four varieties of pattern characters to be quoted,
+whereas quoting characters within the braces has this effect.
+.Bl -tag -width aaparameterwordaaaaa
+.It ${parameter%word}
+Remove Smallest Suffix Pattern.
+The word is expanded to produce a pattern.
+The parameter expansion then results in parameter, with the
+smallest portion of the suffix matched by the pattern deleted.
+.It ${parameter%%word}
+Remove Largest Suffix Pattern.
+The word is expanded to produce a pattern.
+The parameter expansion then results in parameter, with the largest
+portion of the suffix matched by the pattern deleted.
+.It ${parameter#word}
+Remove Smallest Prefix Pattern.
+The word is expanded to produce a pattern.
+The parameter expansion then results in parameter, with the
+smallest portion of the prefix matched by the pattern deleted.
+.It ${parameter##word}
+Remove Largest Prefix Pattern.
+The word is expanded to produce a pattern.
+The parameter expansion then results in parameter, with the largest
+portion of the prefix matched by the pattern deleted.
+.El
+.Ss Command Substitution
+Command substitution allows the output of a command to be substituted in
+place of the command name itself.
+Command substitution occurs when the command is enclosed as follows:
+.Pp
+.Dl $(command)
+.Pp
+or
+.Po
+.Dq backquoted
+version
+.Pc :
+.Pp
+.Dl `command`
+.Pp
+The shell expands the command substitution by executing command in a
+subshell environment and replacing the command substitution with the
+standard output of the command, removing sequences of one or more
+.Ao newline Ac Ns s
+at the end of the substitution.
+(Embedded
+.Ao newline Ac Ns s
+before
+the end of the output are not removed; however, during field splitting,
+they may be translated into
+.Ao space Ac Ns s ,
+depending on the value of
+.Ev IFS
+and quoting that is in effect.)
+.Ss Arithmetic Expansion
+Arithmetic expansion provides a mechanism for evaluating an arithmetic
+expression and substituting its value.
+The format for arithmetic expansion is as follows:
+.Pp
+.Dl $((expression))
+.Pp
+The expression is treated as if it were in double-quotes, except
+that a double-quote inside the expression is not treated specially.
+The shell expands all tokens in the expression for parameter expansion,
+command substitution, and quote removal.
+.Pp
+Next, the shell treats this as an arithmetic expression and
+substitutes the value of the expression.
+.Ss White Space Splitting (Field Splitting)
+After parameter expansion, command substitution, and
+arithmetic expansion the shell scans the results of
+expansions and substitutions that did not occur in double-quotes for
+field splitting and multiple fields can result.
+.Pp
+The shell treats each character of the
+.Ev IFS
+as a delimiter and use the delimiters to split the results of parameter
+expansion and command substitution into fields.
+.Pp
+Non-whitespace characters in
+.Ev IFS
+are treated strictly as parameter terminators.
+So adjacent non-whitespace
+.Ev IFS
+characters will produce empty parameters.
+.Pp
+If
+.Ev IFS
+is unset it is assumed to contain space, tab, and newline.
+.Ss Pathname Expansion (File Name Generation)
+Unless the
+.Fl f
+flag is set, file name generation is performed after word splitting is
+complete.
+Each word is viewed as a series of patterns, separated by slashes.
+The process of expansion replaces the word with the names of all
+existing files whose names can be formed by replacing each pattern with a
+string that matches the specified pattern.
+There are two restrictions on
+this: first, a pattern cannot match a string containing a slash, and
+second, a pattern cannot match a string starting with a period unless the
+first character of the pattern is a period.
+The next section describes the
+patterns used for both Pathname Expansion and the
+.Ic case
+command.
+.Ss Shell Patterns
+A pattern consists of normal characters, which match themselves,
+and meta-characters.
+The meta-characters are
+.Dq \&! ,
+.Dq * ,
+.Dq \&? ,
+and
+.Dq \&[ .
+These characters lose their special meanings if they are quoted.
+When command or variable substitution is performed
+and the dollar sign or back quotes are not double quoted,
+the value of the variable or the output of
+the command is scanned for these characters and they are turned into
+meta-characters.
+.Pp
+An asterisk
+.Pq Dq *
+matches any string of characters.
+A question mark matches any single character.
+A left bracket
+.Pq Dq \&[
+introduces a character class.
+The end of the character class is indicated by a
+.Pq Dq \&] ;
+if the
+.Dq \&]
+is missing then the
+.Dq \&[
+matches a
+.Dq \&[
+rather than introducing a character class.
+A character class matches any of the characters between the square brackets.
+A range of characters may be specified using a minus sign.
+The character class may be complemented
+by making an exclamation point the first character of the character class.
+.Pp
+To include a
+.Dq \&]
+in a character class, make it the first character listed (after the
+.Dq \&! ,
+if any).
+To include a minus sign, make it the first or last character listed.
+.Ss Builtins
+This section lists the builtin commands which are builtin because they
+need to perform some operation that can't be performed by a separate
+process.
+In addition to these, there are several other commands that may
+be builtin for efficiency (e.g.
+.Xr printf 1 ,
+.Xr echo 1 ,
+.Xr test 1 ,
+etc).
+.Bl -tag -width 5n
+.It :
+A null command that returns a 0 (true) exit value.
+.It \&. file
+The commands in the specified file are read and executed by the shell.
+.It alias Op Ar name Ns Op Ar "=string ..."
+If
+.Ar name=string
+is specified, the shell defines the alias
+.Ar name
+with value
+.Ar string .
+If just
+.Ar name
+is specified, the value of the alias
+.Ar name
+is printed.
+With no arguments, the
+.Ic alias
+builtin prints the
+names and values of all defined aliases (see
+.Ic unalias ) .
+.It bg [ Ar job ] ...
+Continue the specified jobs (or the current job if no
+jobs are given) in the background.
+.It Xo command
+.Op Fl p
+.Op Fl v
+.Op Fl V
+.Ar command
+.Op Ar arg ...
+.Xc
+Execute the specified command but ignore shell functions when searching
+for it.
+(This is useful when you
+have a shell function with the same name as a builtin command.)
+.Bl -tag -width 5n
+.It Fl p
+search for command using a
+.Ev PATH
+that guarantees to find all the standard utilities.
+.It Fl V
+Do not execute the command but
+search for the command and print the resolution of the
+command search.
+This is the same as the type builtin.
+.It Fl v
+Do not execute the command but
+search for the command and print the absolute pathname
+of utilities, the name for builtins or the expansion of aliases.
+.El
+.It cd Op Ar directory Op Ar replace
+Switch to the specified directory (default
+.Ev $HOME ) .
+If
+.Ar replace
+is specified, then the new directory name is generated by replacing
+the first occurrence of
+.Ar directory
+in the current directory name with
+.Ar replace .
+Otherwise if an entry for
+.Ev CDPATH
+appears in the environment of the
+.Ic cd
+command or the shell variable
+.Ev CDPATH
+is set and the directory name does not begin with a slash, then the
+directories listed in
+.Ev CDPATH
+will be searched for the specified directory.
+The format of
+.Ev CDPATH
+is the same as that of
+.Ev PATH .
+In an interactive shell, the
+.Ic cd
+command will print out the name of the
+directory that it actually switched to if this is different from the name
+that the user gave.
+These may be different either because the
+.Ev CDPATH
+mechanism was used or because a symbolic link was crossed.
+.It eval Ar string ...
+Concatenate all the arguments with spaces.
+Then re-parse and execute the command.
+.It exec Op Ar command arg ...
+Unless command is omitted, the shell process is replaced with the
+specified program (which must be a real program, not a shell builtin or
+function).
+Any redirections on the
+.Ic exec
+command are marked as permanent, so that they are not undone when the
+.Ic exec
+command finishes.
+.It exit Op Ar exitstatus
+Terminate the shell process.
+If
+.Ar exitstatus
+is given it is used as the exit status of the shell; otherwise the
+exit status of the preceding command is used.
+.It export Ar name ...
+.It export Fl p
+The specified names are exported so that they will appear in the
+environment of subsequent commands.
+The only way to un-export a variable is to unset it.
+The shell allows the value of a variable to be set at the
+same time it is exported by writing
+.Pp
+.Dl export name=value
+.Pp
+With no arguments the export command lists the names of all exported variables.
+With the
+.Fl p
+option specified the output will be formatted suitably for non-interactive use.
+.It Xo fc Op Fl e Ar editor
+.Op Ar first Op Ar last
+.Xc
+.It Xo fc Fl l
+.Op Fl nr
+.Op Ar first Op Ar last
+.Xc
+.It Xo fc Fl s Op Ar old=new
+.Op Ar first
+.Xc
+The
+.Ic fc
+builtin lists, or edits and re-executes, commands previously entered
+to an interactive shell.
+.Bl -tag -width 5n
+.It Fl e No editor
+Use the editor named by editor to edit the commands.
+The editor string is a command name, subject to search via the
+.Ev PATH
+variable.
+The value in the
+.Ev FCEDIT
+variable is used as a default when
+.Fl e
+is not specified.
+If
+.Ev FCEDIT
+is null or unset, the value of the
+.Ev EDITOR
+variable is used.
+If
+.Ev EDITOR
+is null or unset,
+.Xr ed 1
+is used as the editor.
+.It Fl l No (ell)
+List the commands rather than invoking an editor on them.
+The commands are written in the sequence indicated by
+the first and last operands, as affected by
+.Fl r ,
+with each command preceded by the command number.
+.It Fl n
+Suppress command numbers when listing with -l.
+.It Fl r
+Reverse the order of the commands listed (with
+.Fl l )
+or edited (with neither
+.Fl l
+nor
+.Fl s ) .
+.It Fl s
+Re-execute the command without invoking an editor.
+.It first
+.It last
+Select the commands to list or edit.
+The number of previous commands that
+can be accessed are determined by the value of the
+.Ev HISTSIZE
+variable.
+The value of first or last or both are one of the following:
+.Bl -tag -width 5n
+.It [+]number
+A positive number representing a command number; command numbers can be
+displayed with the
+.Fl l
+option.
+.It Fl number
+A negative decimal number representing the command that was executed
+number of commands previously.
+For example, \-1 is the immediately previous command.
+.El
+.It string
+A string indicating the most recently entered command that begins with
+that string.
+If the old=new operand is not also specified with
+.Fl s ,
+the string form of the first operand cannot contain an embedded equal sign.
+.El
+.Pp
+The following environment variables affect the execution of fc:
+.Bl -tag -width HISTSIZE
+.It Ev FCEDIT
+Name of the editor to use.
+.It Ev HISTSIZE
+The number of previous commands that are accessible.
+.El
+.It fg Op Ar job
+Move the specified job or the current job to the foreground.
+.It getopts Ar optstring var
+The
+.Tn POSIX
+.Ic getopts
+command, not to be confused with the
+.Em Bell Labs
+-derived
+.Xr getopt 1 .
+.Pp
+The first argument should be a series of letters, each of which may be
+optionally followed by a colon to indicate that the option requires an
+argument.
+The variable specified is set to the parsed option.
+.Pp
+The
+.Ic getopts
+command deprecates the older
+.Xr getopt 1
+utility due to its handling of arguments containing whitespace.
+.Pp
+The
+.Ic getopts
+builtin may be used to obtain options and their arguments
+from a list of parameters.
+When invoked,
+.Ic getopts
+places the value of the next option from the option string in the list in
+the shell variable specified by
+.Va var
+and its index in the shell variable
+.Ev OPTIND .
+When the shell is invoked,
+.Ev OPTIND
+is initialized to 1.
+For each option that requires an argument, the
+.Ic getopts
+builtin will place it in the shell variable
+.Ev OPTARG .
+If an option is not allowed for in the
+.Va optstring ,
+then
+.Ev OPTARG
+will be unset.
+.Pp
+.Va optstring
+is a string of recognized option letters (see
+.Xr getopt 3 ) .
+If a letter is followed by a colon, the option is expected to have an
+argument which may or may not be separated from it by whitespace.
+If an option character is not found where expected,
+.Ic getopts
+will set the variable
+.Va var
+to a
+.Dq \&? ;
+.Ic getopts
+will then unset
+.Ev OPTARG
+and write output to standard error.
+By specifying a colon as the first character of
+.Va optstring
+all errors will be ignored.
+.Pp
+A nonzero value is returned when the last option is reached.
+If there are no remaining arguments,
+.Ic getopts
+will set
+.Va var
+to the special option,
+.Dq -- ,
+otherwise, it will set
+.Va var
+to
+.Dq \&? .
+.Pp
+The following code fragment shows how one might process the arguments
+for a command that can take the options
+.Op a
+and
+.Op b ,
+and the option
+.Op c ,
+which requires an argument.
+.Pp
+.Bd -literal -offset indent
+while getopts abc: f
+do
+	case $f in
+	a | b)	flag=$f;;
+	c)	carg=$OPTARG;;
+	\\?)	echo $USAGE; exit 1;;
+	esac
+done
+shift `expr $OPTIND - 1`
+.Ed
+.Pp
+This code will accept any of the following as equivalent:
+.Pp
+.Bd -literal -offset indent
+cmd \-acarg file file
+cmd \-a \-c arg file file
+cmd \-carg -a file file
+cmd \-a \-carg \-\- file file
+.Ed
+.It hash Fl rv Ar command ...
+The shell maintains a hash table which remembers the
+locations of commands.
+With no arguments whatsoever,
+the
+.Ic hash
+command prints out the contents of this table.
+Entries which have not been looked at since the last
+.Ic cd
+command are marked with an asterisk; it is possible for these entries
+to be invalid.
+.Pp
+With arguments, the
+.Ic hash
+command removes the specified commands from the hash table (unless
+they are functions) and then locates them.
+With the
+.Fl v
+option, hash prints the locations of the commands as it finds them.
+The
+.Fl r
+option causes the hash command to delete all the entries in the hash table
+except for functions.
+.It inputrc Ar file
+Read the
+.Va file
+to set keybindings as defined by
+.Xr editrc 5 .
+.It jobid Op Ar job
+Print the process id's of the processes in the job.
+If the
+.Ar job
+argument is omitted, the current job is used.
+.It jobs
+This command lists out all the background processes
+which are children of the current shell process.
+.It pwd Op Fl LP
+Print the current directory.
+If 
+.Fl L
+is specified the cached value (initially set from
+.Ev PWD )
+is checked to see if it refers to the current directory, if it does
+the value is printed.
+Otherwise the current directory name is found using
+.Xr getcwd(3) .
+The environment variable
+.Ev PWD
+is set to printed value.
+.Pp
+The default is
+.Ic pwd
+.Fl L ,
+but note that the builtin
+.Ic cd
+command doesn't currently support
+.Fl L
+or
+.Fl P
+and will cache (almost) the absolute path.
+If
+.Ic cd
+is changed,
+.Ic pwd
+may be changed to default to
+.Ic pwd
+.Fl P .
+.Pp
+If the current directory is renamed and replaced by a symlink to the
+same directory, or the initial
+.Ev PWD
+value followed a symbolic link, then the cached value may not
+be the absolute path.
+.Pp
+The builtin command may differ from the program of the same name because
+the program will use
+.Ev PWD
+and the builtin uses a separately cached value.
+.It Xo read Op Fl p Ar prompt
+.Op Fl r
+.Ar variable
+.Op Ar ...
+.Xc
+The prompt is printed if the
+.Fl p
+option is specified and the standard input is a terminal.
+Then a line is read from the standard input.
+The trailing newline is deleted from the
+line and the line is split as described in the section on word splitting
+above, and the pieces are assigned to the variables in order.
+If there are more pieces than variables, the remaining pieces
+(along with the characters in
+.Ev IFS
+that separated them) are assigned to the last variable.
+If there are more variables than pieces,
+the remaining variables are assigned the null string.
+The
+.Ic read
+builtin will indicate success unless EOF is encountered on input, in
+which case failure is returned.
+.Pp
+By default, unless the
+.Fl r
+option is specified, the backslash
+.Dq \e
+acts as an escape character, causing the following character to be treated
+literally.
+If a backslash is followed by a newline, the backslash and the
+newline will be deleted.
+.It readonly Ar name ...
+.It readonly Fl p
+The specified names are marked as read only, so that they cannot be
+subsequently modified or unset.
+The shell allows the value of a variable
+to be set at the same time it is marked read only by writing
+.Pp
+.Dl readonly name=value
+.Pp
+With no arguments the readonly command lists the names of all read only
+variables.
+With the
+.Fl p
+option specified the output will be formatted suitably for non-interactive use.
+.Pp
+.It Xo set
+.Oo {
+.Fl options | Cm +options | Cm -- }
+.Oc Ar arg ...
+.Xc
+The
+.Ic set
+command performs three different functions.
+.Pp
+With no arguments, it lists the values of all shell variables.
+.Pp
+If options are given, it sets the specified option
+flags, or clears them as described in the section called
+.Sx Argument List Processing .
+.Pp
+The third use of the set command is to set the values of the shell's
+positional parameters to the specified args.
+To change the positional
+parameters without changing any options, use
+.Dq --
+as the first argument to set.
+If no args are present, the set command
+will clear all the positional parameters (equivalent to executing
+.Dq shift $# . )
+.It setvar Ar variable Ar value
+Assigns value to variable.
+(In general it is better to write
+variable=value rather than using
+.Ic setvar .
+.Ic setvar
+is intended to be used in
+functions that assign values to variables whose names are passed as
+parameters.)
+.It shift Op Ar n
+Shift the positional parameters n times.
+A
+.Ic shift
+sets the value of
+.Va $1
+to the value of
+.Va $2 ,
+the value of
+.Va $2
+to the value of
+.Va $3 ,
+and so on, decreasing
+the value of
+.Va $#
+by one.
+If there are zero positional parameters,
+.Ic shift
+does nothing.
+.It Xo trap
+.Op Fl l
+.Xc
+.It Xo trap
+.Op Ar action
+.Ar signal ...
+.Xc
+Cause the shell to parse and execute action when any of the specified
+signals are received.
+The signals are specified by signal number or as the name of the signal.
+If
+.Ar signal
+is
+.Li 0 ,
+the action is executed when the shell exits.
+.Ar action
+may be null, which cause the specified signals to be ignored.
+With
+.Ar action
+omitted or set to `-' the specified signals are set to their default action.
+When the shell forks off a subshell, it resets trapped (but not ignored)
+signals to the default action.
+The
+.Ic trap
+command has no effect on signals that were
+ignored on entry to the shell.
+Issuing
+.Ic trap
+with option
+.Ar -l
+will print a list of valid signal names.
+.Ic trap
+without any arguments cause it to write a list of signals and their
+associated action to the standard output in a format that is suitable
+as an input to the shell that achieves the same trapping results.
+.Pp
+Examples:
+.Pp
+.Dl trap
+.Pp
+List trapped signals and their corresponding action
+.Pp
+.Dl trap -l
+.Pp
+Print a list of valid signals
+.Pp
+.Dl trap '' INT QUIT tstp 30
+.Pp
+Ignore signals INT QUIT TSTP USR1
+.Pp
+.Dl trap date INT
+.Pp
+Print date upon receiving signal INT
+.It type Op Ar name ...
+Interpret each name as a command and print the resolution of the command
+search.
+Possible resolutions are:
+shell keyword, alias, shell builtin,
+command, tracked alias and not found.
+For aliases the alias expansion is
+printed; for commands and tracked aliases the complete pathname of the
+command is printed.
+.It ulimit Xo
+.Op Fl H \*(Ba Fl S
+.Op Fl a \*(Ba Fl tfdscmlpn Op Ar value
+.Xc
+Inquire about or set the hard or soft limits on processes or set new
+limits.
+The choice between hard limit (which no process is allowed to
+violate, and which may not be raised once it has been lowered) and soft
+limit (which causes processes to be signaled but not necessarily killed,
+and which may be raised) is made with these flags:
+.Bl -tag -width Fl
+.It Fl H
+set or inquire about hard limits
+.It Fl S
+set or inquire about soft limits.
+If neither
+.Fl H
+nor
+.Fl S
+is specified, the soft limit is displayed or both limits are set.
+If both are specified, the last one wins.
+.El
+.Pp
+.Bl -tag -width Fl
+The limit to be interrogated or set, then, is chosen by specifying
+any one of these flags:
+.It Fl a
+show all the current limits
+.It Fl b
+show or set the limit on the socket buffer size of a process (in bytes)
+.It Fl t
+show or set the limit on CPU time (in seconds)
+.It Fl f
+show or set the limit on the largest file that can be created
+(in 512-byte blocks)
+.It Fl d
+show or set the limit on the data segment size of a process (in kilobytes)
+.It Fl s
+show or set the limit on the stack size of a process (in kilobytes)
+.It Fl c
+show or set the limit on the largest core dump size that can be produced
+(in 512-byte blocks)
+.It Fl m
+show or set the limit on the total physical memory that can be
+in use by a process (in kilobytes)
+.It Fl l
+show or set the limit on how much memory a process can lock with
+.Xr mlock 2
+(in kilobytes)
+.It Fl p
+show or set the limit on the number of processes this user can
+have at one time
+.It Fl n
+show or set the limit on the number of files a process can have open at once
+.El
+.Pp
+If none of these is specified, it is the limit on file size that is shown
+or set.
+If value is specified, the limit is set to that number; otherwise
+the current limit is displayed.
+.Pp
+Limits of an arbitrary process can be displayed or set using the
+.Xr sysctl 8
+utility.
+.Pp
+.It umask Op Ar mask
+Set the value of umask (see
+.Xr umask 2 )
+to the specified octal value.
+If the argument is omitted, the umask value is printed.
+.It unalias Xo
+.Op Fl a
+.Op Ar name
+.Xc
+If
+.Ar name
+is specified, the shell removes that alias.
+If
+.Fl a
+is specified, all aliases are removed.
+.It unset Ar name ...
+The specified variables and functions are unset and unexported.
+If a given name corresponds to both a variable and a function, both
+the variable and the function are unset.
+.It wait Op Ar job
+Wait for the specified job to complete and return the exit status of the
+last process in the job.
+If the argument is omitted, wait for all jobs to
+complete and then return an exit status of zero.
+.El
+.Ss Command Line Editing
+When
+.Nm
+is being used interactively from a terminal, the current command
+and the command history (see
+.Ic fc
+in
+.Sx Builtins )
+can be edited using emacs-mode or vi-mode command-line editing.
+The command
+.Ql set -o emacs
+enables emacs-mode editing.
+The command
+.Ql set -o vi
+enables vi-mode editing and places sh into vi insert mode.
+(See the
+.Sx Argument List Processing
+section above.)
+.Pp
+The vi mode uses commands similar to a subset of those described in the
+.Xr vi 1
+man page.
+With vi-mode
+enabled, sh can be switched between insert mode and command mode.
+It's similar to vi: typing
+.Aq ESC
+will throw you into command VI command mode.
+Hitting
+.Aq return
+while in command mode will pass the line to the shell.
+.Pp
+The emacs mode uses commands similar to a subset available in
+the emacs editor.
+With emacs-mode enabled, special keys can be used to modify the text
+in the buffer using the control key.
+.Pp
+.Nm
+uses the
+.Xr editline 3
+library.
+.Sh EXIT STATUS
+Errors that are detected by the shell, such as a syntax error, will cause the
+shell to exit with a non-zero exit status.
+If the shell is not an
+interactive shell, the execution of the shell file will be aborted.
+Otherwise
+the shell will return the exit status of the last command executed, or
+if the exit builtin is used with a numeric argument, it will return the
+argument.
+.Sh ENVIRONMENT
+.Bl -tag -width MAILCHECK
+.It Ev HOME
+Set automatically by
+.Xr login 1
+from the user's login directory in the password file
+.Pq Xr passwd 5 .
+This environment variable also functions as the default argument for the
+cd builtin.
+.It Ev PATH
+The default search path for executables.
+See the above section
+.Sx Path Search .
+.It Ev CDPATH
+The search path used with the cd builtin.
+.It Ev LANG
+The string used to specify localization information that allows users
+to work with different culture-specific and language conventions.
+See
+.Xr nls 7 .
+.It Ev MAIL
+The name of a mail file, that will be checked for the arrival of new mail.
+Overridden by
+.Ev MAILPATH .
+.It Ev MAILCHECK
+The frequency in seconds that the shell checks for the arrival of mail
+in the files specified by the
+.Ev MAILPATH
+or the
+.Ev MAIL
+file.
+If set to 0, the check will occur at each prompt.
+.It Ev MAILPATH
+A colon
+.Dq \&:
+separated list of file names, for the shell to check for incoming mail.
+This environment setting overrides the
+.Ev MAIL
+setting.
+There is a maximum of 10 mailboxes that can be monitored at once.
+.It Ev PS1
+The primary prompt string, which defaults to
+.Dq $ \  ,
+unless you are the superuser, in which case it defaults to
+.Dq # \  .
+.It Ev PS2
+The secondary prompt string, which defaults to
+.Dq \*[Gt] \  .
+.It Ev PS4
+Output before each line when execution trace (set -x) is enabled,
+defaults to
+.Dq + \  .
+.It Ev IFS
+Input Field Separators.
+This is normally set to
+.Aq space ,
+.Aq tab ,
+and
+.Aq newline .
+See the
+.Sx White Space Splitting
+section for more details.
+.It Ev TERM
+The default terminal setting for the shell.
+This is inherited by
+children of the shell, and is used in the history editing modes.
+.It Ev HISTSIZE
+The number of lines in the history buffer for the shell.
+.El
+.Sh FILES
+.Bl -item -width HOMEprofilexxxx
+.It
+.Pa $HOME/.profile
+.It
+.Pa /etc/profile
+.El
+.Sh SEE ALSO
+.Xr csh 1 ,
+.Xr echo 1 ,
+.Xr getopt 1 ,
+.Xr ksh 1 ,
+.Xr login 1 ,
+.Xr printf 1 ,
+.Xr test 1 ,
+.Xr editline 3 ,
+.Xr getopt 3 ,
+.\" .Xr profile 4 ,
+.Xr editrc 5 ,
+.Xr passwd 5 ,
+.Xr environ 7 ,
+.Xr nls 7 ,
+.Xr sysctl 8
+.Sh HISTORY
+A
+.Nm
+command appeared in
+.At v1 .
+It was, however, unmaintainable so we wrote this one.
+.Sh BUGS
+Setuid shell scripts should be avoided at all costs, as they are a
+significant security risk.
+.Pp
+PS1, PS2, and PS4 should be subject to parameter expansion before
+being displayed.
+.Pp
+The characters generated by filename completion should probably be quoted
+to ensure that the filename is still valid after the input line has been
+processed.
diff --git a/src/kash/shell.h b/src/kash/shell.h
new file mode 100644
index 0000000..9a234cb
--- /dev/null
+++ b/src/kash/shell.h
@@ -0,0 +1,102 @@
+/*	$NetBSD: shell.h,v 1.17 2003/08/07 09:05:38 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)shell.h	8.2 (Berkeley) 5/4/95
+ */
+
+/*
+ * The follow should be set to reflect the type of system you have:
+ *	JOBS -> 1 if you have Berkeley job control, 0 otherwise.
+ *	SHORTNAMES -> 1 if your linker cannot handle long names.
+ *	define BSD if you are running 4.2 BSD or later.
+ *	define SYSV if you are running under System V.
+ *	define DEBUG=1 to compile in debugging ('set -o debug' to turn on)
+ *	define DEBUG=2 to compile in and turn on debugging.
+ *	define DO_SHAREDVFORK to indicate that vfork(2) shares its address
+ *	       with its parent.
+ *
+ * When debugging is on, debugging info will be written to ./trace and
+ * a quit signal will generate a core dump.
+ */
+
+#ifndef ___shell_h
+#define ___shell_h
+
+#ifndef _MSC_VER
+# include <sys/param.h>
+#endif
+
+#define JOBS 1
+#ifndef BSD
+# define BSD 1
+#endif
+
+#if 0
+#ifndef DO_SHAREDVFORK
+# if __NetBSD_Version__ >= 104000000
+#  define DO_SHAREDVFORK
+# endif
+#endif
+#endif
+
+typedef void *pointer;
+#ifndef NULL
+# define NULL (void *)0
+#endif
+#define STATIC	/* empty */
+#define MKINIT	/* empty */
+
+#ifdef HAVE_SYS_CDEFS_H
+# include <sys/cdefs.h>
+#endif
+
+extern char nullstr[1];		/* null string */
+
+
+#ifdef DEBUG
+# define TRACE(param)	trace param
+# define TRACEV(param)	tracev param
+#else
+# define TRACE(param)
+# define TRACEV(param)
+#endif
+
+#include "shtypes.h"
+
+#ifndef SH_FORKED_MODE
+# ifndef KASH_USE_FORKSHELL2
+#  define KASH_USE_FORKSHELL2
+# endif
+#endif
+
+#endif
diff --git a/src/kash/shfile.c b/src/kash/shfile.c
new file mode 100644
index 0000000..78f5332
--- /dev/null
+++ b/src/kash/shfile.c
@@ -0,0 +1,2656 @@
+/* $Id: shfile.c 3542 2022-01-29 01:36:00Z bird $ */
+/** @file
+ *
+ * File management.
+ *
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "shfile.h"
+#include "shinstance.h" /* TRACE2 */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#if K_OS == K_OS_WINDOWS
+# include <ntstatus.h>
+# define WIN32_NO_STATUS
+# include <Windows.h>
+# if !defined(_WIN32_WINNT)
+#  define _WIN32_WINNT 0x0502 /* Windows Server 2003 */
+# endif
+# include <winternl.h> //NTSTATUS
+#else
+# include <unistd.h>
+# include <fcntl.h>
+# include <dirent.h>
+#endif
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** @def SHFILE_IN_USE
+ * Whether the file descriptor table stuff is actually in use or not.
+ */
+#if K_OS == K_OS_WINDOWS \
+ || K_OS == K_OS_OPENBSD /* because of ugly pthread library pipe hacks */ \
+ || !defined(SH_FORKED_MODE)
+# define SHFILE_IN_USE
+#endif
+/** The max file table size. */
+#define SHFILE_MAX          1024
+/** The file table growth rate. */
+#define SHFILE_GROW         64
+/** The min native unix file descriptor. */
+#define SHFILE_UNIX_MIN_FD  32
+/** The path buffer size we use. */
+#define SHFILE_MAX_PATH     4096
+
+/** Set errno and return. Doing a trace in debug build. */
+#define RETURN_ERROR(rc, err, msg)  \
+    do { \
+        TRACE2((NULL, "%s: " ## msg ## " - returning %d / %d\n", __FUNCTION__, (rc), (err))); \
+        errno = (err); \
+        return (rc); \
+    } while (0)
+
+#if K_OS == K_OS_WINDOWS
+ /* See msdos.h for description. */
+# define FOPEN              0x01
+# define FEOFLAG            0x02
+# define FCRLF              0x04
+# define FPIPE              0x08
+# define FNOINHERIT         0x10
+# define FAPPEND            0x20
+# define FDEV               0x40
+# define FTEXT              0x80
+
+# define MY_ObjectBasicInformation 0
+# define MY_FileNamesInformation 12
+
+typedef struct
+{
+    ULONG           Attributes;
+    ACCESS_MASK     GrantedAccess;
+    ULONG           HandleCount;
+    ULONG           PointerCount;
+    ULONG           PagedPoolUsage;
+    ULONG           NonPagedPoolUsage;
+    ULONG           Reserved[3];
+    ULONG           NameInformationLength;
+    ULONG           TypeInformationLength;
+    ULONG           SecurityDescriptorLength;
+    LARGE_INTEGER   CreateTime;
+} MY_OBJECT_BASIC_INFORMATION;
+
+#if 0
+typedef struct
+{
+    union
+    {
+        LONG    Status;
+        PVOID   Pointer;
+    };
+    ULONG_PTR   Information;
+} MY_IO_STATUS_BLOCK;
+#else
+typedef IO_STATUS_BLOCK MY_IO_STATUS_BLOCK;
+#endif
+typedef MY_IO_STATUS_BLOCK *PMY_IO_STATUS_BLOCK;
+
+typedef struct
+{
+    ULONG   NextEntryOffset;
+    ULONG   FileIndex;
+    ULONG   FileNameLength;
+    WCHAR   FileName[1];
+} MY_FILE_NAMES_INFORMATION, *PMY_FILE_NAMES_INFORMATION;
+
+typedef NTSTATUS (NTAPI * PFN_NtQueryObject)(HANDLE, int, void *, size_t, size_t *);
+typedef NTSTATUS (NTAPI * PFN_NtQueryDirectoryFile)(HANDLE, HANDLE, void *,  void *, PMY_IO_STATUS_BLOCK, void *,
+                                                    ULONG, int, int, PUNICODE_STRING, int);
+typedef NTSTATUS (NTAPI * PFN_RtlUnicodeStringToAnsiString)(PANSI_STRING, PCUNICODE_STRING, int);
+
+
+#endif /* K_OS_WINDOWS */
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+#if K_OS == K_OS_WINDOWS
+static int                              g_shfile_globals_initialized = 0;
+static PFN_NtQueryObject                g_pfnNtQueryObject = NULL;
+static PFN_NtQueryDirectoryFile         g_pfnNtQueryDirectoryFile = NULL;
+static PFN_RtlUnicodeStringToAnsiString g_pfnRtlUnicodeStringToAnsiString = NULL;
+# ifdef KASH_ASYNC_CLOSE_HANDLE
+/** Data for the asynchronous CloseHandle machinery. */
+static struct shfileasyncclose
+{
+    /** Mutex protecting the asynchronous CloseHandle stuff. */
+    shmtx                               mtx;
+    /** Handle to event that the closer-threads are waiting on. */
+    HANDLE                              evt_workers;
+    /** The ring buffer read index (for closer-threads). */
+    unsigned volatile                   idx_read;
+    /** The ring buffer write index (for shfile_native_close).
+     * When idx_read and idx_write are the same, the ring buffer is empty. */
+    unsigned volatile                   idx_write;
+    /** Number of handles currently being pending closure (handles + current
+     *  CloseHandle calls). */
+    unsigned volatile                   num_pending;
+    /** Set if the threads should terminate. */
+    KBOOL volatile                      terminate_threads;
+    /** Set if one or more shell threads have requested evt_sync to be signalled
+     * when there are no more pending requests. */
+    KBOOL volatile                      signal_sync;
+    /** Number of threads that have been spawned. */
+    KU8                                 num_threads;
+    /** Handle to event that the shell threads are waiting on to sync. */
+    HANDLE                              evt_sync;
+    /** Ring buffer containing handles to be closed. */
+    HANDLE                              handles[32];
+    /** Worker threads doing the asynchronous closing. */
+    HANDLE                              threads[8];
+} g_shfile_async_close;
+# endif
+#endif /* K_OS_WINDOWS */
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+#ifdef SHFILE_IN_USE
+# if K_OS == K_OS_WINDOWS
+static HANDLE shfile_set_inherit_win(shfile *pfd, int set);
+# endif
+#endif
+
+
+#ifdef SHFILE_IN_USE
+
+# ifdef DEBUG
+# if K_OS == K_OS_WINDOWS
+static KU64 shfile_nano_ts(void)
+{
+    static KBOOL volatile s_has_factor = K_FALSE;
+    static double volatile s_factor;
+    double factor;
+    LARGE_INTEGER now;
+    if (s_has_factor)
+        factor = s_factor;
+    else
+    {
+        QueryPerformanceFrequency(&now);
+        s_factor = factor = (double)1000000000.0 / now.QuadPart;
+        s_has_factor = K_TRUE;
+    }
+    QueryPerformanceCounter(&now);
+    return (KU64)(now.QuadPart * factor);
+}
+#  endif /* K_OS_WINDOWS */
+# endif /* DEBUG */
+
+# if K_OS == K_OS_WINDOWS && defined(KASH_ASYNC_CLOSE_HANDLE)
+/**
+ * The closer thread function.
+ */
+static unsigned __stdcall shfile_async_close_handle_thread(void *ignored)
+{
+    KBOOL decrement_pending = K_FALSE;
+    shthread_set_name("Async CloseHandle");
+    while (!g_shfile_async_close.terminate_threads)
+    {
+        HANDLE toclose;
+        unsigned idx;
+        shmtxtmp tmp;
+
+        /*
+         * Grab a handle if there is one:
+         */
+        shmtx_enter(&g_shfile_async_close.mtx, &tmp);
+
+        if (decrement_pending)
+        {
+            kHlpAssert(g_shfile_async_close.num_pending > 0);
+            g_shfile_async_close.num_pending -= 1;
+        }
+
+        idx = g_shfile_async_close.idx_read % K_ELEMENTS(g_shfile_async_close.handles);
+        if (idx != g_shfile_async_close.idx_write % K_ELEMENTS(g_shfile_async_close.handles))
+        {
+            kHlpAssert(g_shfile_async_close.num_pending > 0);
+            toclose = g_shfile_async_close.handles[idx];
+            kHlpAssert(toclose);
+            g_shfile_async_close.handles[idx] = NULL;
+            g_shfile_async_close.idx_read = (idx + 1) % K_ELEMENTS(g_shfile_async_close.handles);
+        }
+        else
+        {
+            /* Signal waiters if requested and we've reached zero pending requests. */
+            if (g_shfile_async_close.signal_sync && g_shfile_async_close.num_pending == 0)
+            {
+                BOOL rc = SetEvent(g_shfile_async_close.evt_sync);
+                kHlpAssert(rc);
+                g_shfile_async_close.signal_sync = FALSE;
+            }
+            toclose = NULL;
+        }
+        shmtx_leave(&g_shfile_async_close.mtx, &tmp);
+
+        /* Do the closing if we have something to close, otherwise wait for work to arrive. */
+        if (toclose != NULL)
+        {
+            BOOL rc = CloseHandle(toclose);
+            kHlpAssert(rc);
+            decrement_pending = K_TRUE;
+        }
+        else
+        {
+            DWORD dwRet = WaitForSingleObject(g_shfile_async_close.evt_workers, 10000 /*ms*/);
+            kHlpAssert(dwRet == WAIT_OBJECT_0 || dwRet == WAIT_TIMEOUT);
+            decrement_pending = K_FALSE;
+        }
+    }
+
+    K_NOREF(ignored);
+    return 0;
+}
+
+/**
+ * Try submit a handle for automatic closing.
+ *
+ * @returns K_TRUE if submitted successfully, K_FALSE if not.
+ */
+static KBOOL shfile_async_close_submit(HANDLE toclose)
+{
+    KBOOL    ret;
+    unsigned idx;
+    unsigned idx_next;
+    unsigned idx_read;
+    unsigned num_pending = 0;
+    unsigned num_threads = 0;
+    shmtxtmp tmp;
+    shmtx_enter(&g_shfile_async_close.mtx, &tmp);
+
+    /* Get the write index and check that there is a free slot in the buffer: */
+    idx      = g_shfile_async_close.idx_write % K_ELEMENTS(g_shfile_async_close.handles);
+    idx_next = (idx + 1)                      % K_ELEMENTS(g_shfile_async_close.handles);
+    idx_read = g_shfile_async_close.idx_read  % K_ELEMENTS(g_shfile_async_close.handles);
+    if (idx_next != idx_read)
+    {
+        /* Write the handle to the ring buffer: */
+        kHlpAssert(g_shfile_async_close.handles[idx] == NULL);
+        g_shfile_async_close.handles[idx] = toclose;
+        g_shfile_async_close.idx_write    = idx_next;
+
+        num_pending = g_shfile_async_close.num_pending + 1;
+        g_shfile_async_close.num_pending = num_pending;
+
+        ret = SetEvent(g_shfile_async_close.evt_workers);
+        kHlpAssert(ret);
+        if (ret)
+        {
+            /* If we have more pending requests than threads, create a new thread. */
+            num_threads = g_shfile_async_close.num_threads;
+            if (num_pending > num_threads && num_threads < K_ELEMENTS(g_shfile_async_close.threads))
+            {
+                int const savederrno = errno;
+                unsigned tid = 0;
+                intptr_t hThread = _beginthreadex(NULL /*security*/, 0 /*stack_size*/, shfile_async_close_handle_thread,
+                                                  NULL /*arg*/, 0 /*initflags*/, &tid);
+                kHlpAssert(hThread != -1);
+                if (hThread != -1)
+                {
+                    g_shfile_async_close.threads[num_threads] = (HANDLE)hThread;
+                    g_shfile_async_close.num_threads = ++num_threads;
+                }
+                else
+                {
+                    TRACE2((NULL, "shfile_async_close_submit: _beginthreadex failed: %d\n", errno));
+                    if (num_threads == 0)
+                        ret = K_FALSE;
+                }
+                errno = savederrno;
+            }
+        }
+        else
+            TRACE2((NULL, "shfile_async_close_submit: SetEvent(%p) failed: %u\n", g_shfile_async_close.evt_workers, GetLastError()));
+
+        /* cleanup on failure. */
+        if (ret)
+        { /* likely */ }
+        else
+        {
+            g_shfile_async_close.handles[idx] = NULL;
+            g_shfile_async_close.idx_write    = idx;
+            g_shfile_async_close.num_pending  = num_pending - 1;
+        }
+    }
+    else
+        ret = K_FALSE;
+
+    shmtx_leave(&g_shfile_async_close.mtx, &tmp);
+    TRACE2((NULL, "shfile_async_close_submit: toclose=%p idx=%d #pending=%u #thread=%u -> %d\n",
+            toclose, idx, num_pending, num_threads, ret));
+    return ret;
+}
+
+/**
+ * Wait for all pending CloseHandle calls to complete.
+ */
+void shfile_async_close_sync(void)
+{
+    shmtxtmp tmp;
+    shmtx_enter(&g_shfile_async_close.mtx, &tmp);
+
+    if (g_shfile_async_close.num_pending > 0)
+    {
+        DWORD dwRet;
+
+/** @todo help out? */
+        if (!g_shfile_async_close.signal_sync)
+        {
+            BOOL rc = ResetEvent(g_shfile_async_close.evt_sync);
+            kHlpAssert(rc); K_NOREF(rc);
+
+            g_shfile_async_close.signal_sync = K_TRUE;
+        }
+
+        shmtx_leave(&g_shfile_async_close.mtx, &tmp);
+
+        TRACE2((NULL, "shfile_async_close_sync: Calling WaitForSingleObject...\n"));
+        dwRet = WaitForSingleObject(g_shfile_async_close.evt_sync, 10000 /*ms*/);
+        kHlpAssert(dwRet == WAIT_OBJECT_0);
+        kHlpAssert(g_shfile_async_close.num_pending == 0);
+        TRACE2((NULL, "shfile_async_close_sync: WaitForSingleObject returned %u...\n", dwRet));
+    }
+    else
+        shmtx_leave(&g_shfile_async_close.mtx, &tmp);
+}
+
+# endif /* K_OS == K_OS_WINDOWS && defined(KASH_ASYNC_CLOSE_HANDLE) */
+
+/**
+ * Close the specified native handle.
+ *
+ * @param   native      The native file handle.
+ * @param   file        The file table entry if available.
+ * @param   inheritable The inheritability of the handle on windows, K_FALSE elsewhere.
+ */
+static void shfile_native_close(intptr_t native, shfile *file, KBOOL inheritable)
+{
+# if K_OS == K_OS_WINDOWS
+#  ifdef KASH_ASYNC_CLOSE_HANDLE
+    /*
+     * CloseHandle may take several milliseconds on NTFS after we've appended
+     * a few bytes to a file.  When a script uses lots of 'echo line-text >> file'
+     * we end up executing very slowly, even if 'echo' is builtin and the statement
+     * requires no subshells to be spawned.
+     *
+     * So, detect problematic handles and do CloseHandle asynchronously.   When
+     * executing a child process, we probably will have to make sure the CloseHandle
+     * operation has completed before we do ResumeThread on the child to make 100%
+     * sure we can't have any sharing conflicts or end up with incorrect CRT stat()
+     * results.  Sharing conflicts are not a problem for builtin commands, and for
+     * stat we do not use the CRT code but ntstat.c/h and it seems to work fine
+     * (might be a tiny bit slower, so (TODO) might be worth reducing what we ask for).
+     *
+     * If child processes are spawned using handle inheritance and the handle in
+     * question is inheritable, we will have to fix the inheriability before pushing
+     * on the async-close queue.  This shouldn't have the CloseHandle issues.
+     */
+    if (   file
+        &&    (file->shflags & (SHFILE_FLAGS_DIRTY | SHFILE_FLAGS_TYPE_MASK))
+           ==                  (SHFILE_FLAGS_DIRTY | SHFILE_FLAGS_FILE))
+    {
+        if (inheritable)
+            native = (intptr_t)shfile_set_inherit_win(file, 0);
+        if (shfile_async_close_submit((HANDLE)native))
+            return;
+    }
+
+    /*
+     * Otherwise close it right here:
+     */
+#   endif
+    {
+#  ifdef DEBUG
+    KU64 ns = shfile_nano_ts();
+    BOOL fRc = CloseHandle((HANDLE)native);
+    kHlpAssert(fRc); K_NOREF(fRc);
+    ns = shfile_nano_ts() - ns;
+    if (ns > 1000000)
+        TRACE2((NULL, "shfile_native_close: %u ns %p oflags=%#x %s\n",
+                ns, native, file ? file->oflags : 0, file ? file->dbgname : NULL));
+#  else
+    BOOL fRc = CloseHandle((HANDLE)native);
+    kHlpAssert(fRc); K_NOREF(fRc);
+#  endif
+    }
+
+# else  /* K_OS != K_OS_WINDOWS */
+    int s = errno;
+    close(native);
+    errno = s;
+# endif /* K_OS != K_OS_WINDOWS */
+    K_NOREF(file);
+}
+
+/**
+ * Grows the descriptor table, making sure that it can hold @a fdMin,
+ *
+ * @returns The max(fdMin, fdFirstNew) on success, -1 on failure.
+ * @param   pfdtab      The table to grow.
+ * @param   fdMin       Grow to include this index.
+ */
+static int shfile_grow_tab_locked(shfdtab *pfdtab, int fdMin)
+{
+    /*
+     * Grow the descriptor table.
+     */
+    int         fdRet = -1;
+    shfile     *new_tab;
+    int         new_size = pfdtab->size + SHFILE_GROW;
+    while (new_size < fdMin)
+        new_size += SHFILE_GROW;
+    TRACE2((NULL, "shfile_grow_tab_locked: old %p / %d entries; new size: %d\n", pfdtab->tab, pfdtab->size, new_size));
+    new_tab = sh_realloc(shthread_get_shell(), pfdtab->tab, new_size * sizeof(shfile));
+    if (new_tab)
+    {
+        int     i;
+        for (i = pfdtab->size; i < new_size; i++)
+        {
+            new_tab[i].fd = -1;
+            new_tab[i].oflags = 0;
+            new_tab[i].shflags = 0;
+            new_tab[i].native = -1;
+# ifdef DEBUG
+            new_tab[i].dbgname = NULL;
+# endif
+        }
+
+        fdRet = pfdtab->size;
+        if (fdRet < fdMin)
+            fdRet = fdMin;
+
+        pfdtab->tab = new_tab;
+        pfdtab->size = new_size;
+
+        TRACE2((NULL, "shfile_grow_tab_locked: new %p / %d entries\n", pfdtab->tab, pfdtab->size));
+    }
+
+    return fdRet;
+}
+
+/**
+ * Inserts the file into the descriptor table.
+ *
+ * If we're out of memory and cannot extend the table, we'll close the
+ * file, set errno to EMFILE and return -1.
+ *
+ * @returns The file descriptor number. -1 and errno on failure.
+ * @param   pfdtab      The file descriptor table.
+ * @param   native      The native file handle.
+ * @param   oflags      The flags the it was opened/created with.
+ * @param   shflags     The shell file flags.
+ * @param   fdMin       The minimum file descriptor number, pass -1 if any is ok.
+ * @param   who         Who we're doing this for (for logging purposes).
+ * @param   dbgname     The filename, if applicable/available.
+ */
+static int shfile_insert(shfdtab *pfdtab, intptr_t native, unsigned oflags, unsigned shflags, int fdMin,
+                         const char *who, const char *dbgname)
+{
+    shmtxtmp tmp;
+    int fd;
+    int i;
+
+    /*
+     * Fend of bad stuff.
+     */
+    if (fdMin >= SHFILE_MAX)
+    {
+        TRACE2((NULL, "shfile_insert: fdMin=%d is out of bounds; native=%p %s\n", fdMin, native, dbgname));
+        shfile_native_close(native, NULL, K_FALSE);
+        errno = EMFILE;
+        return -1;
+    }
+# if K_OS != K_OS_WINDOWS
+    if (fcntl((int)native, F_SETFD, fcntl((int)native, F_GETFD, 0) | FD_CLOEXEC) == -1)
+    {
+        int e = errno;
+        TRACE2((NULL, "shfile_insert: F_SETFD failed %d; native=%p %s\n", e, native, dbgname));
+        close((int)native);
+        errno = e;
+        return -1;
+    }
+# endif
+
+    shmtx_enter(&pfdtab->mtx, &tmp);
+
+    /*
+     * Search for a fitting unused location.
+     */
+    fd = -1;
+    for (i = fdMin >= 0 ? fdMin : 0; (unsigned)i < pfdtab->size; i++)
+        if (pfdtab->tab[i].fd == -1)
+        {
+            fd = i;
+            break;
+        }
+    if (fd == -1)
+        fd = shfile_grow_tab_locked(pfdtab, fdMin);
+
+    /*
+     * Fill in the entry if we've found one.
+     */
+    if (fd != -1)
+    {
+        pfdtab->tab[fd].fd = fd;
+        pfdtab->tab[fd].oflags = oflags;
+        pfdtab->tab[fd].shflags = shflags;
+        pfdtab->tab[fd].native = native;
+#ifdef DEBUG
+        pfdtab->tab[fd].dbgname = dbgname ? sh_strdup(NULL, dbgname) : NULL;
+#endif
+        TRACE2((NULL, "shfile_insert: #%d: native=%p oflags=%#x shflags=%#x %s\n", fd, native, oflags, shflags, dbgname));
+    }
+    else
+        shfile_native_close(native, NULL, K_FALSE);
+
+    shmtx_leave(&pfdtab->mtx, &tmp);
+
+    if (fd == -1)
+        errno = EMFILE;
+    (void)who;
+    return fd;
+}
+
+# if K_OS != K_OS_WINDOWS
+/**
+ * Makes a copy of the native file, closes the original, and inserts the copy
+ * into the descriptor table.
+ *
+ * If we're out of memory and cannot extend the table, we'll close the
+ * file, set errno to EMFILE and return -1.
+ *
+ * @returns The file descriptor number. -1 and errno on failure.
+ * @param   pfdtab      The file descriptor table.
+ * @param   pnative     The native file handle on input, -1 on output.
+ * @param   oflags      The flags the it was opened/created with.
+ * @param   shflags     The shell file flags.
+ * @param   fdMin       The minimum file descriptor number, pass -1 if any is ok.
+ * @param   who         Who we're doing this for (for logging purposes).
+ * @param   dbgname     The filename, if applicable/available.
+ */
+static int shfile_copy_insert_and_close(shfdtab *pfdtab, int *pnative, unsigned oflags, unsigned shflags, int fdMin,
+                                        const char *who, const char *dbgname)
+{
+    int fd          = -1;
+    int s           = errno;
+    int native_copy = fcntl(*pnative, F_DUPFD, SHFILE_UNIX_MIN_FD);
+    close(*pnative);
+    *pnative = -1;
+    errno = s;
+
+    if (native_copy != -1)
+        fd = shfile_insert(pfdtab, native_copy, oflags, shflags, fdMin, who, dbgname);
+    return fd;
+}
+# endif /* !K_OS_WINDOWS */
+
+/**
+ * Gets a file descriptor and lock the file descriptor table.
+ *
+ * @returns Pointer to the file and table ownership on success,
+ *          NULL and errno set to EBADF on failure.
+ * @param   pfdtab      The file descriptor table.
+ * @param   fd          The file descriptor number.
+ * @param   ptmp        See shmtx_enter.
+ */
+static shfile *shfile_get(shfdtab *pfdtab, int fd, shmtxtmp *ptmp)
+{
+    shfile *file = NULL;
+    if (    fd >= 0
+        &&  (unsigned)fd < pfdtab->size)
+    {
+        shmtx_enter(&pfdtab->mtx, ptmp);
+        if ((unsigned)fd < pfdtab->size
+            &&  pfdtab->tab[fd].fd != -1)
+            file = &pfdtab->tab[fd];
+        else
+            shmtx_leave(&pfdtab->mtx, ptmp);
+    }
+    if (!file)
+        errno = EBADF;
+    return file;
+}
+
+/**
+ * Puts back a file descriptor and releases the table ownership.
+ *
+ * @param   pfdtab      The file descriptor table.
+ * @param   file        The file.
+ * @param   ptmp        See shmtx_leave.
+ */
+static void shfile_put(shfdtab *pfdtab, shfile *file, shmtxtmp *ptmp)
+{
+    shmtx_leave(&pfdtab->mtx, ptmp);
+    kHlpAssert(file);
+    (void)file;
+}
+
+/**
+ * Constructs a path from the current directory and the passed in path.
+ *
+ * @returns 0 on success, -1 and errno set to ENAMETOOLONG or EINVAL on failure.
+ *
+ * @param   pfdtab      The file descriptor table
+ * @param   path        The path the caller supplied.
+ * @param   buf         Where to put the path. This is assumed to be SHFILE_MAX_PATH
+ *                      chars in size.
+ */
+int shfile_make_path(shfdtab *pfdtab, const char *path, char *buf)
+{
+    size_t path_len = strlen(path);
+    if (path_len == 0)
+    {
+        errno = EINVAL;
+        return -1;
+    }
+    if (path_len >= SHFILE_MAX_PATH)
+    {
+        errno = ENAMETOOLONG;
+        return -1;
+    }
+    if (    *path == '/'
+# if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+        ||  *path == '\\'
+        ||  (   *path
+             && path[1] == ':'
+             && (   (*path >= 'A' && *path <= 'Z')
+                 || (*path >= 'a' && *path <= 'z')))
+# endif
+        )
+    {
+        memcpy(buf, path, path_len + 1);
+    }
+    else
+    {
+        size_t      cwd_len;
+        shmtxtmp    tmp;
+
+        shmtx_enter(&pfdtab->mtx, &tmp);
+
+        cwd_len = strlen(pfdtab->cwd);
+        memcpy(buf, pfdtab->cwd, cwd_len);
+
+        shmtx_leave(&pfdtab->mtx, &tmp);
+
+        if (cwd_len + path_len + 1 >= SHFILE_MAX_PATH)
+        {
+            errno = ENAMETOOLONG;
+            return -1;
+        }
+        if (    !cwd_len
+            ||  buf[cwd_len - 1] != '/')
+            buf[cwd_len++] = '/';
+        memcpy(buf + cwd_len, path, path_len + 1);
+    }
+
+# if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+    if (!strcmp(buf, "/dev/null"))
+        strcpy(buf, "NUL");
+# endif
+    return 0;
+}
+
+# if K_OS == K_OS_WINDOWS
+
+/**
+ * Adjusts the file name if it ends with a trailing directory slash.
+ *
+ * Windows APIs doesn't like trailing slashes.
+ *
+ * @returns 1 if it has a directory slash, 0 if not.
+ *
+ * @param   abspath     The path to adjust (SHFILE_MAX_PATH).
+ */
+static int shfile_trailing_slash_hack(char *abspath)
+{
+    /*
+     * Anything worth adjust here?
+     */
+    size_t path_len = strlen(abspath);
+    if (   path_len == 0
+        || (   abspath[path_len - 1] != '/'
+#  if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+            && abspath[path_len - 1] != '\\'
+#  endif
+           )
+       )
+        return 0;
+
+    /*
+     * Ok, make the adjustment.
+     */
+    if (path_len + 2 <= SHFILE_MAX_PATH)
+    {
+        /* Add a '.' to the end. */
+        abspath[path_len++] = '.';
+        abspath[path_len]   = '\0';
+    }
+    else
+    {
+        /* No space for a dot, remove the slash if it's alone or just remove
+           one and add a dot like above. */
+        if (   abspath[path_len - 2] != '/'
+#  if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+            && abspath[path_len - 2] != '\\'
+#  endif
+           )
+            abspath[--path_len] = '\0';
+        else
+            abspath[path_len - 1] = '.';
+    }
+
+    return 1;
+}
+
+
+/**
+ * Converts a DOS(/Windows) error code to errno,
+ * assigning it to errno.
+ *
+ * @returns -1
+ * @param   err     The DOS error.
+ */
+static int shfile_dos2errno(int err)
+{
+    switch (err)
+    {
+        case ERROR_BAD_ENVIRONMENT:         errno = E2BIG;      break;
+        case ERROR_ACCESS_DENIED:           errno = EACCES;     break;
+        case ERROR_CURRENT_DIRECTORY:       errno = EACCES;     break;
+        case ERROR_LOCK_VIOLATION:          errno = EACCES;     break;
+        case ERROR_NETWORK_ACCESS_DENIED:   errno = EACCES;     break;
+        case ERROR_CANNOT_MAKE:             errno = EACCES;     break;
+        case ERROR_FAIL_I24:                errno = EACCES;     break;
+        case ERROR_DRIVE_LOCKED:            errno = EACCES;     break;
+        case ERROR_SEEK_ON_DEVICE:          errno = EACCES;     break;
+        case ERROR_NOT_LOCKED:              errno = EACCES;     break;
+        case ERROR_LOCK_FAILED:             errno = EACCES;     break;
+        case ERROR_NO_PROC_SLOTS:           errno = EAGAIN;     break;
+        case ERROR_MAX_THRDS_REACHED:       errno = EAGAIN;     break;
+        case ERROR_NESTING_NOT_ALLOWED:     errno = EAGAIN;     break;
+        case ERROR_INVALID_HANDLE:          errno = EBADF;      break;
+        case ERROR_INVALID_TARGET_HANDLE:   errno = EBADF;      break;
+        case ERROR_DIRECT_ACCESS_HANDLE:    errno = EBADF;      break;
+        case ERROR_WAIT_NO_CHILDREN:        errno = ECHILD;     break;
+        case ERROR_CHILD_NOT_COMPLETE:      errno = ECHILD;     break;
+        case ERROR_FILE_EXISTS:             errno = EEXIST;     break;
+        case ERROR_ALREADY_EXISTS:          errno = EEXIST;     break;
+        case ERROR_INVALID_FUNCTION:        errno = EINVAL;     break;
+        case ERROR_INVALID_ACCESS:          errno = EINVAL;     break;
+        case ERROR_INVALID_DATA:            errno = EINVAL;     break;
+        case ERROR_INVALID_PARAMETER:       errno = EINVAL;     break;
+        case ERROR_NEGATIVE_SEEK:           errno = EINVAL;     break;
+        case ERROR_TOO_MANY_OPEN_FILES:     errno = EMFILE;     break;
+        case ERROR_FILE_NOT_FOUND:          errno = ENOENT;     break;
+        case ERROR_PATH_NOT_FOUND:          errno = ENOENT;     break;
+        case ERROR_INVALID_DRIVE:           errno = ENOENT;     break;
+        case ERROR_NO_MORE_FILES:           errno = ENOENT;     break;
+        case ERROR_BAD_NETPATH:             errno = ENOENT;     break;
+        case ERROR_BAD_NET_NAME:            errno = ENOENT;     break;
+        case ERROR_BAD_PATHNAME:            errno = ENOENT;     break;
+        case ERROR_FILENAME_EXCED_RANGE:    errno = ENOENT;     break;
+        case ERROR_BAD_FORMAT:              errno = ENOEXEC;    break;
+        case ERROR_ARENA_TRASHED:           errno = ENOMEM;     break;
+        case ERROR_NOT_ENOUGH_MEMORY:       errno = ENOMEM;     break;
+        case ERROR_INVALID_BLOCK:           errno = ENOMEM;     break;
+        case ERROR_NOT_ENOUGH_QUOTA:        errno = ENOMEM;     break;
+        case ERROR_DISK_FULL:               errno = ENOSPC;     break;
+        case ERROR_DIR_NOT_EMPTY:           errno = ENOTEMPTY;  break;
+        case ERROR_BROKEN_PIPE:             errno = EPIPE;      break;
+        case ERROR_NOT_SAME_DEVICE:         errno = EXDEV;      break;
+        default:                            errno = EINVAL;     break;
+    }
+    return -1;
+}
+
+/**
+ * Converts an NT status code to errno,
+ * assigning it to errno.
+ *
+ * @returns -1
+ * @param   rcNt        The NT status code.
+ */
+static int shfile_nt2errno(NTSTATUS rcNt)
+{
+    switch (rcNt)
+    {
+        default:                            errno = EINVAL; break;
+    }
+    return -1;
+}
+
+DWORD shfile_query_handle_access_mask(HANDLE h, PACCESS_MASK pMask)
+{
+    MY_OBJECT_BASIC_INFORMATION     BasicInfo;
+    NTSTATUS                        rcNt;
+
+    if (!g_pfnNtQueryObject)
+        return ERROR_NOT_SUPPORTED;
+
+    rcNt = g_pfnNtQueryObject(h, MY_ObjectBasicInformation, &BasicInfo, sizeof(BasicInfo), NULL);
+    if (rcNt >= 0)
+    {
+        *pMask = BasicInfo.GrantedAccess;
+        return NO_ERROR;
+    }
+    if (rcNt != STATUS_INVALID_HANDLE)
+        return ERROR_GEN_FAILURE;
+    return ERROR_INVALID_HANDLE;
+}
+
+# endif /* K_OS == K_OS_WINDOWS */
+
+#endif /* SHFILE_IN_USE */
+
+/**
+ * Converts DOS slashes to UNIX slashes if necessary.
+ *
+ * @param   pszPath             The path to fix.
+ */
+K_INLINE void shfile_fix_slashes(char *pszPath)
+{
+#if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+    while ((pszPath = strchr(pszPath, '\\')))
+        *pszPath++ = '/';
+#else
+    (void)pszPath;
+#endif
+}
+
+/**
+ * Initializes the global variables in this file.
+ */
+static void shfile_init_globals(void)
+{
+#if K_OS == K_OS_WINDOWS
+    if (!g_shfile_globals_initialized)
+    {
+        HMODULE hNtDll = GetModuleHandle("NTDLL");
+        g_pfnNtQueryObject                = (PFN_NtQueryObject)       GetProcAddress(hNtDll, "NtQueryObject");
+        g_pfnNtQueryDirectoryFile         = (PFN_NtQueryDirectoryFile)GetProcAddress(hNtDll, "NtQueryDirectoryFile");
+        g_pfnRtlUnicodeStringToAnsiString = (PFN_RtlUnicodeStringToAnsiString)GetProcAddress(hNtDll, "RtlUnicodeStringToAnsiString");
+        if (   !g_pfnRtlUnicodeStringToAnsiString
+            || !g_pfnNtQueryDirectoryFile)
+        {
+            /* fatal error */
+        }
+
+# ifdef KASH_ASYNC_CLOSE_HANDLE
+        /*
+         * Init the async CloseHandle state.
+         */
+        shmtx_init(&g_shfile_async_close.mtx);
+        g_shfile_async_close.evt_workers = CreateEventW(NULL, FALSE /*fManualReset*/, FALSE /*fInitialState*/, NULL /*pwszName*/);
+        g_shfile_async_close.evt_sync    = CreateEventW(NULL, TRUE /*fManualReset*/, FALSE /*fInitialState*/, NULL /*pwszName*/);
+        if (   !g_shfile_async_close.evt_workers
+            || !g_shfile_async_close.evt_sync)
+        {
+            fprintf(stderr, "fatal error: CreateEventW failed: %u\n", GetLastError());
+            _exit(19);
+        }
+        g_shfile_async_close.idx_read          = 0;
+        g_shfile_async_close.idx_write         = 0;
+        g_shfile_async_close.num_pending       = 0;
+        g_shfile_async_close.terminate_threads = K_FALSE;
+        g_shfile_async_close.signal_sync       = K_FALSE;
+        g_shfile_async_close.num_threads       = 0;
+        {
+            unsigned i = K_ELEMENTS(g_shfile_async_close.handles);
+            while (i-- > 0)
+                g_shfile_async_close.handles[i] = NULL;
+            i = K_ELEMENTS(g_shfile_async_close.threads);
+            while (i-- > 0)
+                g_shfile_async_close.threads[i] = NULL;
+        }
+# endif
+
+        g_shfile_globals_initialized = 1;
+    }
+#endif
+}
+
+/**
+ * Initializes a file descriptor table.
+ *
+ * @returns 0 on success, -1 and errno on failure.
+ * @param   pfdtab      The table to initialize.
+ * @param   inherit     File descriptor table to inherit from. If not specified
+ *                      we will inherit from the current process as it were.
+ */
+int shfile_init(shfdtab *pfdtab, shfdtab *inherit)
+{
+    int rc;
+
+    shfile_init_globals();
+
+    pfdtab->cwd  = NULL;
+    pfdtab->size = 0;
+    pfdtab->tab  = NULL;
+    rc = shmtx_init(&pfdtab->mtx);
+    if (!rc)
+    {
+#ifdef SHFILE_IN_USE
+        /* Get CWD with unix slashes. */
+        if (!inherit)
+        {
+            char buf[SHFILE_MAX_PATH];
+            if (getcwd(buf, sizeof(buf)))
+            {
+                shfile_fix_slashes(buf);
+                pfdtab->cwd = sh_strdup(NULL, buf);
+            }
+            if (pfdtab->cwd)
+            {
+# if K_OS == K_OS_WINDOWS
+                static const struct
+                {
+                    DWORD dwStdHandle;
+                    unsigned fFlags;
+                } aStdHandles[3] =
+                {
+                    { STD_INPUT_HANDLE,   _O_RDONLY },
+                    { STD_OUTPUT_HANDLE,  _O_WRONLY },
+                    { STD_ERROR_HANDLE,   _O_WRONLY }
+                };
+                int             i;
+                STARTUPINFO     Info;
+                ACCESS_MASK     Mask;
+                DWORD           dwErr;
+
+                rc = 0;
+
+                /* Try pick up the Visual C++ CRT file descriptor info. */
+                __try {
+                    GetStartupInfo(&Info);
+                } __except (EXCEPTION_EXECUTE_HANDLER) {
+                    memset(&Info, 0, sizeof(Info));
+                }
+
+                if (    Info.cbReserved2 > sizeof(int)
+                    &&  (uintptr_t)Info.lpReserved2 >= 0x1000
+                    &&  (i = *(int *)Info.lpReserved2) >= 1
+                    &&  i <= 2048
+                    &&  (   Info.cbReserved2 == i * 5 + 4
+                         //|| Info.cbReserved2 == i * 5 + 1 - check the cygwin sources.
+                         || Info.cbReserved2 == i * 9 + 4))
+                {
+                    uint8_t    *paf    = (uint8_t *)Info.lpReserved2 + sizeof(int);
+                    int         dwPerH = 1 + (Info.cbReserved2 == i * 9 + 4);
+                    DWORD      *ph     = (DWORD *)(paf + i) + dwPerH * i;
+                    HANDLE      aStdHandles2[3];
+                    int         j;
+
+                    //if (Info.cbReserved2 == i * 5 + 1) - check the cygwin sources.
+                    //    i--;
+
+                    for (j = 0; j < 3; j++)
+                        aStdHandles2[j] = GetStdHandle(aStdHandles[j].dwStdHandle);
+
+                    while (i-- > 0)
+                    {
+                        ph -= dwPerH;
+
+                        if (   (paf[i] & (FOPEN | FNOINHERIT)) == FOPEN
+                            && *ph != (uint32_t)INVALID_HANDLE_VALUE
+                            && *ph != 0)
+                        {
+                            HANDLE  h = (HANDLE)(intptr_t)*ph;
+                            int     fd2;
+                            int     fFlags;
+                            int     fFlags2;
+
+                            if (    h == aStdHandles2[j = 0]
+                                ||  h == aStdHandles2[j = 1]
+                                ||  h == aStdHandles2[j = 2])
+                                fFlags = aStdHandles[j].fFlags;
+                            else
+                            {
+                                dwErr = shfile_query_handle_access_mask(h, &Mask);
+                                if (dwErr == ERROR_INVALID_HANDLE)
+                                    continue;
+                                if (dwErr == NO_ERROR)
+                                {
+                                    fFlags = 0;
+                                    if (    (Mask & (GENERIC_READ | FILE_READ_DATA))
+                                        &&  (Mask & (GENERIC_WRITE | FILE_WRITE_DATA | FILE_APPEND_DATA)))
+                                        fFlags |= O_RDWR;
+                                    else if (Mask & (GENERIC_READ | FILE_READ_DATA))
+                                        fFlags |= O_RDONLY;
+                                    else if (Mask & (GENERIC_WRITE | FILE_WRITE_DATA | FILE_APPEND_DATA))
+                                        fFlags |= O_WRONLY;
+                                    else
+                                        fFlags |= O_RDWR;
+                                    if ((Mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) == FILE_APPEND_DATA)
+                                        fFlags |= O_APPEND;
+                                }
+                                else
+                                    fFlags = O_RDWR;
+                            }
+
+                            if (paf[i] & FPIPE)
+                                fFlags2 = SHFILE_FLAGS_PIPE;
+                            else if (paf[i] & FDEV)
+                                fFlags2 = SHFILE_FLAGS_TTY;
+                            else
+                                fFlags2 = 0;
+
+                            fd2 = shfile_insert(pfdtab, (intptr_t)h, fFlags, fFlags2, i, "shtab_init", NULL);
+                            kHlpAssert(fd2 == i); (void)fd2;
+                            if (fd2 != i)
+                                rc = -1;
+                        }
+                    }
+                }
+
+                /* Check the three standard handles. */
+                for (i = 0; i < 3; i++)
+                    if (    (unsigned)i >= pfdtab->size
+                        ||  pfdtab->tab[i].fd == -1)
+                    {
+                        HANDLE hFile = GetStdHandle(aStdHandles[i].dwStdHandle);
+                        if (   hFile != INVALID_HANDLE_VALUE
+                            && hFile != NULL)
+                        {
+                            DWORD       dwType  = GetFileType(hFile);
+                            unsigned    fFlags  = aStdHandles[i].fFlags;
+                            unsigned    fFlags2;
+                            int         fd2;
+                            if (dwType == FILE_TYPE_CHAR)
+                                fFlags2 = SHFILE_FLAGS_TTY;
+                            else if (dwType == FILE_TYPE_PIPE)
+                                fFlags2 = SHFILE_FLAGS_PIPE;
+                            else
+                                fFlags2 = SHFILE_FLAGS_FILE;
+                            fd2 = shfile_insert(pfdtab, (intptr_t)hFile, fFlags, fFlags2, i, "shtab_init", NULL);
+                            kHlpAssert(fd2 == i); (void)fd2;
+                            if (fd2 != i)
+                                rc = -1;
+                        }
+                    }
+# else
+                /*
+                 * Annoying...
+                 */
+                int fd;
+
+                for (fd = 0; fd < 10; fd++)
+                {
+                    int oflags = fcntl(fd, F_GETFL, 0);
+                    if (oflags != -1)
+                    {
+                        int cox = fcntl(fd, F_GETFD, 0);
+                        struct stat st;
+                        if (   cox != -1
+                            && fstat(fd, &st) != -1)
+                        {
+                            int native;
+                            int fd2;
+                            int fFlags2 = 0;
+                            if (cox & FD_CLOEXEC)
+                                fFlags2 |= SHFILE_FLAGS_CLOSE_ON_EXEC;
+                            if (S_ISREG(st.st_mode))
+                                fFlags2 |= SHFILE_FLAGS_FILE;
+                            else if (S_ISDIR(st.st_mode))
+                                fFlags2 |= SHFILE_FLAGS_DIR;
+                            else if (S_ISCHR(st.st_mode))
+                                fFlags2 |= SHFILE_FLAGS_TTY;
+                            else if (S_ISFIFO(st.st_mode))
+                                fFlags2 |= SHFILE_FLAGS_PIPE;
+                            else
+                                fFlags2 |= SHFILE_FLAGS_TTY;
+
+                            native = fcntl(fd, F_DUPFD, SHFILE_UNIX_MIN_FD);
+                            if (native == -1)
+                                native = fd;
+                            fd2 = shfile_insert(pfdtab, native, oflags, fFlags2, fd, "shtab_init", NULL);
+                            kHlpAssert(fd2 == fd); (void)fd2;
+                            if (fd2 != fd)
+                                rc = -1;
+                            if (native != fd)
+                                close(fd);
+                        }
+                    }
+                }
+
+# endif
+            }
+            else
+                rc = -1;
+        }
+        else
+        {
+            /*
+             * Inherit from parent shell's file table.
+             */
+            shfile const *src;
+            shfile       *dst;
+            shmtxtmp      tmp;
+            unsigned      fdcount;
+            unsigned      fd;
+
+            shmtx_enter(&inherit->mtx, &tmp);
+
+            /* allocate table and cwd: */
+            fdcount = inherit->size;
+            pfdtab->tab = dst = (shfile *)(fdcount ? sh_calloc(NULL, sizeof(pfdtab->tab[0]), fdcount) : NULL);
+            pfdtab->cwd = sh_strdup(NULL, inherit->cwd);
+            if (   pfdtab->cwd
+                && (pfdtab->tab || fdcount == 0))
+            {
+                /* duplicate table entries: */
+                for (fd = 0, src = inherit->tab; fd < fdcount; fd++, src++, dst++)
+                    if (src->fd == -1)
+                        dst->native = dst->fd = -1;
+                    else
+                    {
+# if K_OS == K_OS_WINDOWS
+#  ifdef SH_FORKED_MODE
+                        KBOOL const cox = !!(src->shflags & SHFILE_FLAGS_CLOSE_ON_EXEC);
+#  else
+                        KBOOL const cox = K_TRUE;
+#  endif
+# endif
+                        *dst = *src;
+# ifdef DEBUG
+                        if (src->dbgname)
+                            dst->dbgname = sh_strdup(NULL, src->dbgname);
+# endif
+# if K_OS == K_OS_WINDOWS
+                        if (DuplicateHandle(GetCurrentProcess(),
+                                            (HANDLE)src->native,
+                                            GetCurrentProcess(),
+                                            (HANDLE *)&dst->native,
+                                            0,
+                                            FALSE /* bInheritHandle */,
+                                            DUPLICATE_SAME_ACCESS))
+                            TRACE2((NULL, "shfile_init: %d (%#x, %#x) %p (was %p)\n",
+                                    dst->fd, dst->oflags, dst->shflags, dst->native, src->native));
+                        else
+                        {
+                            dst->native = (intptr_t)INVALID_HANDLE_VALUE;
+                            rc = shfile_dos2errno(GetLastError());
+                            TRACE2((NULL, "shfile_init: %d (%#x, %#x) %p - failed %d / %u!\n",
+                                    dst->fd, dst->oflags, dst->shflags, src->native, rc, GetLastError()));
+                            break;
+                        }
+
+# elif K_OS == K_OS_LINUX /* 2.6.27 / glibc 2.9 */ || K_OS == K_OS_FREEBSD /* 10.0 */ || K_OS == K_OS_NETBSD /* 6.0 */
+                        dst->native = dup3(src->native, -1, cox ? O_CLOEXEC : 0);
+# else
+                        if (cox)
+                        {
+#  ifndef SH_FORKED_MODE
+                            shmtxtmp tmp2;
+                            shmtx_enter(&global_exec_something, &tmp)
+#  endif
+                            dst->native = dup2(src->native, -1);
+                            if (dst->native >= 0)
+                                rc = fcntl(dst->native, F_SETFD, FD_CLOEXEC);
+#  ifndef SH_FORKED_MODE
+                            shmtx_leave(&global_exec_something, &tmp)
+#  endif
+                            if (rc != 0)
+                                break;
+                        }
+                        else
+                            dst->native = dup2(src->native, -1);
+                        if (dst->native < 0)
+                        {
+                            rc = -1;
+                            break;
+                        }
+# endif
+                    }
+            }
+            else
+                rc = -1;
+            pfdtab->size = fd;
+            shmtx_leave(&inherit->mtx, &tmp);
+        }   /* inherit != NULL */
+#endif
+    }
+    return rc;
+}
+
+/**
+ * Deletes the file descriptor table.
+ *
+ * Safe to call more than once.
+ */
+void shfile_uninit(shfdtab *pfdtab, int tracefd)
+{
+    if (!pfdtab)
+        return;
+
+    if (pfdtab->tab)
+    {
+        unsigned left = pfdtab->size;
+        struct shfile *pfd = pfdtab->tab;
+        unsigned tracefdfound = 0;
+        while (left-- > 0)
+        {
+            if (pfd->fd != -1)
+            {
+                if (pfd->fd != tracefd)
+                {
+#if K_OS == K_OS_WINDOWS
+                    BOOL rc = CloseHandle((HANDLE)pfd->native);
+                    kHlpAssert(rc == TRUE); K_NOREF(rc);
+#else
+                    int rc = close((int)pfd->native);
+                    kHlpAssert(rc == 0); K_NOREF(rc);
+#endif
+                    pfd->fd     = -1;
+                    pfd->native = -1;
+                }
+                else
+                    tracefdfound++; /* there is only the one */
+            }
+            pfd++;
+        }
+
+        if (!tracefdfound)
+        { /* likely */ }
+        else
+            return;
+
+        sh_free(NULL, pfdtab->tab);
+        pfdtab->tab = NULL;
+    }
+
+    shmtx_delete(&pfdtab->mtx);
+
+    sh_free(NULL, pfdtab->cwd);
+    pfdtab->cwd = NULL;
+}
+
+#if K_OS == K_OS_WINDOWS && defined(SHFILE_IN_USE)
+
+/**
+ * Changes the inheritability of a file descriptor, taking console handles into
+ * account.
+ *
+ * @note    This MAY change the native handle for the entry.
+ *
+ * @returns The native handle.
+ * @param   pfd     The file descriptor to change.
+ * @param   set     If set, make child processes inherit the handle, if clear
+ *                  make them not inherit it.
+ */
+static HANDLE shfile_set_inherit_win(shfile *pfd, int set)
+{
+    HANDLE hFile = (HANDLE)pfd->native;
+    if (!SetHandleInformation(hFile, HANDLE_FLAG_INHERIT, set ? HANDLE_FLAG_INHERIT : 0))
+    {
+        /* SetHandleInformation doesn't work for console handles,
+           so we have to duplicate the handle to change the
+           inheritability. */
+        DWORD err = GetLastError();
+        if (   err == ERROR_INVALID_PARAMETER
+            && DuplicateHandle(GetCurrentProcess(),
+                               hFile,
+                               GetCurrentProcess(),
+                               &hFile,
+                               0,
+                               set ? TRUE : FALSE /* bInheritHandle */,
+                               DUPLICATE_SAME_ACCESS))
+        {
+            TRACE2((NULL, "shfile_set_inherit_win: %p -> %p (set=%d)\n", pfd->native, hFile, set));
+            if (!CloseHandle((HANDLE)pfd->native))
+                kHlpAssert(0);
+            pfd->native = (intptr_t)hFile;
+        }
+        else
+        {
+            err = GetLastError();
+            kHlpAssert(0);
+            hFile = (HANDLE)pfd->native;
+        }
+    }
+    return hFile;
+}
+
+# ifdef SH_FORKED_MODE
+/**
+ * Helper for shfork.
+ *
+ * @param   pfdtab  The file descriptor table.
+ * @param   set     Whether to make all handles inheritable (1) or
+ *                  to restore them to the rigth state (0).
+ * @param   hndls   Where to store the three standard handles.
+ */
+void shfile_fork_win(shfdtab *pfdtab, int set, intptr_t *hndls)
+{
+    shmtxtmp tmp;
+    unsigned i;
+
+    shmtx_enter(&pfdtab->mtx, &tmp);
+    TRACE2((NULL, "shfile_fork_win: set=%d\n", set));
+
+    i = pfdtab->size;
+    while (i-- > 0)
+    {
+        if (pfdtab->tab[i].fd == i)
+        {
+            shfile_set_inherit_win(&pfdtab->tab[i], set);
+            if (set)
+                TRACE2((NULL, "  #%d: native=%#x oflags=%#x shflags=%#x\n",
+                        i, pfdtab->tab[i].native, pfdtab->tab[i].oflags, pfdtab->tab[i].shflags));
+        }
+    }
+
+    if (hndls)
+    {
+        for (i = 0; i < 3; i++)
+        {
+            if (    pfdtab->size > i
+                &&  pfdtab->tab[i].fd == i)
+                hndls[i] = pfdtab->tab[i].native;
+            else
+                hndls[i] = (intptr_t)INVALID_HANDLE_VALUE;
+            TRACE2((NULL, "shfile_fork_win: i=%d size=%d fd=%d native=%d hndls[%d]=%p\n",
+                    i, pfdtab->size, pfdtab->tab[i].fd, pfdtab->tab[i].native, i, hndls[i]));
+        }
+    }
+
+    shmtx_leave(&pfdtab->mtx, &tmp);
+}
+# endif /* SH_FORKED_MODE */
+
+/** shfile_exec_win helper that make sure there are no _O_APPEND handles. */
+static KBOOL shfile_exec_win_no_append(shfdtab *pfdtab, unsigned count)
+{
+    unsigned i;
+    for (i = 0; i < count; i++)
+        if (   (pfdtab->tab[i].oflags & _O_APPEND)
+            && (pfdtab->tab[i].oflags & (_O_WRONLY | _O_RDWR)))
+            return K_FALSE;
+    return K_TRUE;
+}
+
+/**
+ * Helper for sh_execve.
+ *
+ * This is called before and after CreateProcess. On the first call it
+ * will mark the non-close-on-exec handles as inheritable and produce
+ * the startup info for the CRT. On the second call, after CreateProcess,
+ * it will restore the handle inheritability properties.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pfdtab  The file descriptor table.
+ * @param   prepare Which call, 1 if before, 0 if after and success, -1 if after on failure.
+ * @param   info    The info structure.
+ */
+int shfile_exec_win(shfdtab *pfdtab, int prepare, shfdexecwin *info)
+{
+    STARTUPINFOA   *strtinfo = (STARTUPINFOA *)info->strtinfo;
+    int             rc = 0;
+    shmtxtmp        tmp;
+    unsigned        count;
+    unsigned        i;
+
+    shmtx_enter(&pfdtab->mtx, &tmp);
+    TRACE2((NULL, "shfile_exec_win: prepare=%p\n", prepare));
+
+    count  = pfdtab->size < (0x10000-4) / (1 + sizeof(HANDLE))
+           ? pfdtab->size
+           : (0x10000-4) / (1 + sizeof(HANDLE));
+    while (   count > 3
+           && (   pfdtab->tab[count - 1].fd == -1
+               || (pfdtab->tab[count - 1].shflags & SHFILE_FLAGS_CLOSE_ON_EXEC)))
+        count--;
+
+    if (prepare > 0)
+    {
+        if (count <= 3 && shfile_exec_win_no_append(pfdtab, count))
+        {
+            info->inherithandles  = 0;
+            info->startsuspended  = 1;
+            strtinfo->cbReserved2 = 0;
+            strtinfo->lpReserved2 = NULL;
+        }
+        else
+        {
+            size_t      cbData = sizeof(int) + count * (1 + sizeof(HANDLE));
+            uint8_t    *pbData = sh_malloc(shthread_get_shell(), cbData);
+            uint8_t    *paf = pbData + sizeof(int);
+            HANDLE     *pah = (HANDLE *)(paf + count);
+
+            info->inherithandles  = 1;
+# ifdef KASH_ASYNC_CLOSE_HANDLE
+            info->startsuspended  = g_shfile_async_close.num_pending > 0;
+# else
+            info->startsuspended  = 0;
+# endif
+            strtinfo->cbReserved2 = (unsigned short)cbData;
+            strtinfo->lpReserved2 = pbData;
+
+# ifndef SH_FORKED_MODE
+            shmtx_leave(&pfdtab->mtx, &tmp); /* should be harmless as this isn't really necessary at all. */
+            shmtx_enter(&g_sh_exec_inherit_mtx, &info->tmp);
+            shmtx_enter(&pfdtab->mtx, &tmp);
+# endif
+
+            *(int *)pbData = count;
+
+            i = count;
+            while (i-- > 0)
+            {
+                if (    pfdtab->tab[i].fd == i
+                    &&  !(pfdtab->tab[i].shflags & SHFILE_FLAGS_CLOSE_ON_EXEC))
+                {
+                    HANDLE hFile = shfile_set_inherit_win(&pfdtab->tab[i], 1);
+                    TRACE2((NULL, "  #%d: native=%#x oflags=%#x shflags=%#x\n",
+                            i, hFile, pfdtab->tab[i].oflags, pfdtab->tab[i].shflags));
+                    paf[i] = FOPEN;
+                    if (pfdtab->tab[i].oflags & _O_APPEND)
+                        paf[i] |= FAPPEND;
+                    if (pfdtab->tab[i].oflags & _O_TEXT)
+                        paf[i] |= FTEXT;
+                    switch (pfdtab->tab[i].shflags & SHFILE_FLAGS_TYPE_MASK)
+                    {
+                        case SHFILE_FLAGS_TTY:  paf[i] |= FDEV; break;
+                        case SHFILE_FLAGS_PIPE: paf[i] |= FPIPE; break;
+                    }
+                    pah[i] = hFile;
+                }
+                else
+                {
+                    paf[i] = 0;
+                    pah[i] = INVALID_HANDLE_VALUE;
+                }
+            }
+        }
+
+        for (i = 0; i < 3; i++)
+        {
+            if (    i < count
+                &&  pfdtab->tab[i].fd == i)
+            {
+                info->replacehandles[i] = 1;
+                info->handles[i] = pfdtab->tab[i].native;
+            }
+            else
+            {
+                info->replacehandles[i] = 0;
+                info->handles[i] = (intptr_t)INVALID_HANDLE_VALUE;
+            }
+            TRACE2((NULL, "shfile_exec_win: i=%d count=%d fd=%d native=%d hndls[%d]=\n",
+                    i, count, pfdtab->tab[i].fd, pfdtab->tab[i].native, i, info->handles[i]));
+        }
+    }
+    else
+    {
+        shfile *file = pfdtab->tab;
+
+        sh_free(NULL, strtinfo->lpReserved2);
+        strtinfo->lpReserved2 = NULL;
+
+        i = count;
+        if (prepare == 0)
+            for (i = 0; i < count; i++, file++)
+            {
+                if (   file->fd == i
+                    && !(file->shflags & SHFILE_FLAGS_TRACE))
+                {
+                    shfile_native_close(file->native, file, info->inherithandles);
+
+                    file->fd = -1;
+                    file->oflags = 0;
+                    file->shflags = 0;
+                    file->native = -1;
+# ifdef DEBUG
+                    sh_free(NULL, file->dbgname);
+                    file->dbgname = NULL;
+# endif
+                }
+            }
+        else if (info->inherithandles)
+            for (i = 0; i < count; i++, file++)
+                if (    file->fd == i
+                    &&  !(file->shflags & SHFILE_FLAGS_CLOSE_ON_EXEC))
+                    shfile_set_inherit_win(file, 0);
+
+# ifndef SH_FORKED_MODE
+        if (info->inherithandles)
+            shmtx_leave(&g_sh_exec_inherit_mtx, &info->tmp);
+# endif
+    }
+
+    shmtx_leave(&pfdtab->mtx, &tmp);
+    return rc;
+}
+
+#endif /* K_OS_WINDOWS */
+
+#if K_OS != K_OS_WINDOWS
+/**
+ * Prepare file handles for inherting before a execve call.
+ *
+ * This is only used in the normal mode, so we've forked and need not worry
+ * about cleaning anything up after us.  Nor do we need think about locking.
+ *
+ * @returns 0 on success, -1 on failure.
+ */
+int shfile_exec_unix(shfdtab *pfdtab)
+{
+    int rc = 0;
+# ifdef SHFILE_IN_USE
+    unsigned fd;
+
+    for (fd = 0; fd < pfdtab->size; fd++)
+    {
+        if (   pfdtab->tab[fd].fd != -1
+            && !(pfdtab->tab[fd].shflags & SHFILE_FLAGS_CLOSE_ON_EXEC) )
+        {
+            TRACE2((NULL, "shfile_exec_unix: %d => %d\n", pfdtab->tab[fd].native, fd));
+            if (dup2(pfdtab->tab[fd].native, fd) < 0)
+            {
+                /* fatal_error(NULL, "shfile_exec_unix: failed to move %d to %d", pfdtab->tab[fd].fd, fd); */
+                rc = -1;
+            }
+        }
+    }
+# endif
+    return rc;
+}
+#endif /* !K_OS_WINDOWS */
+
+/**
+ * open().
+ */
+int shfile_open(shfdtab *pfdtab, const char *name, unsigned flags, mode_t mode)
+{
+    int fd;
+#ifdef SHFILE_IN_USE
+    char    absname[SHFILE_MAX_PATH];
+# if K_OS == K_OS_WINDOWS
+    HANDLE  hFile;
+    DWORD   dwDesiredAccess;
+    DWORD   dwShareMode;
+    DWORD   dwCreationDisposition;
+    DWORD   dwFlagsAndAttributes;
+    SECURITY_ATTRIBUTES SecurityAttributes;
+
+# ifndef _O_ACCMODE
+#  define _O_ACCMODE	(_O_RDONLY|_O_WRONLY|_O_RDWR)
+# endif
+    switch (flags & (_O_ACCMODE | _O_APPEND))
+    {
+        case _O_RDONLY:             dwDesiredAccess = GENERIC_READ; break;
+        case _O_RDONLY | _O_APPEND: dwDesiredAccess = GENERIC_READ; break;
+        case _O_WRONLY:             dwDesiredAccess = GENERIC_WRITE; break;
+        case _O_WRONLY | _O_APPEND: dwDesiredAccess = (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA); break;
+        case _O_RDWR:               dwDesiredAccess = GENERIC_READ | GENERIC_WRITE; break;
+        case _O_RDWR   | _O_APPEND: dwDesiredAccess = GENERIC_READ | (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA); break;
+
+        default:
+            RETURN_ERROR(-1, EINVAL, "invalid mode");
+    }
+
+    dwShareMode = FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE;
+
+    SecurityAttributes.nLength = sizeof(SecurityAttributes);
+    SecurityAttributes.lpSecurityDescriptor = NULL;
+    SecurityAttributes.bInheritHandle = FALSE;
+
+    if (flags & _O_CREAT)
+    {
+        if ((flags & (_O_EXCL | _O_TRUNC)) == (_O_EXCL | _O_TRUNC))
+            RETURN_ERROR(-1, EINVAL, "_O_EXCL | _O_TRUNC");
+
+        if (flags & _O_TRUNC)
+            dwCreationDisposition = CREATE_ALWAYS; /* not 100%, but close enough */
+        else if (flags & _O_EXCL)
+            dwCreationDisposition = CREATE_NEW;
+        else
+            dwCreationDisposition = OPEN_ALWAYS;
+    }
+    else if (flags & _O_TRUNC)
+        dwCreationDisposition = TRUNCATE_EXISTING;
+    else
+        dwCreationDisposition = OPEN_EXISTING;
+
+    if (!(flags & _O_CREAT) || (mode & 0222))
+        dwFlagsAndAttributes = FILE_ATTRIBUTE_NORMAL;
+    else
+        dwFlagsAndAttributes = FILE_ATTRIBUTE_READONLY;
+
+    fd = shfile_make_path(pfdtab, name, &absname[0]);
+    if (!fd)
+    {
+#  ifdef DEBUG
+        KU64 ns = shfile_nano_ts();
+#  endif
+        SetLastError(0);
+        hFile = CreateFileA(absname,
+                            dwDesiredAccess,
+                            dwShareMode,
+                            &SecurityAttributes,
+                            dwCreationDisposition,
+                            dwFlagsAndAttributes,
+                            NULL /* hTemplateFile */);
+#  ifdef DEBUG
+        ns = shfile_nano_ts() - ns;
+        if (ns > 1000000)
+            TRACE2((NULL, "shfile_open: %u ns hFile=%p (%d) %s\n", ns, hFile, GetLastError(), absname));
+#  endif
+        if (hFile != INVALID_HANDLE_VALUE)
+            fd = shfile_insert(pfdtab, (intptr_t)hFile, flags, 0, -1, "shfile_open", absname);
+        else
+            fd = shfile_dos2errno(GetLastError());
+    }
+
+# else  /* K_OS != K_OS_WINDOWS */
+    fd = shfile_make_path(pfdtab, name, &absname[0]);
+    if (!fd)
+    {
+        fd = open(absname, flags, mode);
+        if (fd != -1)
+            fd = shfile_copy_insert_and_close(pfdtab, &fd, flags, 0, -1, "shfile_open", absname);
+    }
+
+# endif /* K_OS != K_OS_WINDOWS */
+
+#else
+    fd = open(name, flags, mode);
+#endif
+
+    TRACE2((NULL, "shfile_open(%p:{%s}, %#x, 0%o) -> %d [%d]\n", name, name, flags, mode, fd, errno));
+    return fd;
+}
+
+int shfile_pipe(shfdtab *pfdtab, int fds[2])
+{
+    int rc = -1;
+#ifdef SHFILE_IN_USE
+# if K_OS == K_OS_WINDOWS
+    HANDLE hRead  = INVALID_HANDLE_VALUE;
+    HANDLE hWrite = INVALID_HANDLE_VALUE;
+    SECURITY_ATTRIBUTES SecurityAttributes;
+
+    SecurityAttributes.nLength = sizeof(SecurityAttributes);
+    SecurityAttributes.lpSecurityDescriptor = NULL;
+    SecurityAttributes.bInheritHandle = FALSE;
+
+    fds[1] = fds[0] = -1;
+    if (CreatePipe(&hRead, &hWrite, &SecurityAttributes, SHFILE_PIPE_SIZE))
+    {
+        fds[0] = shfile_insert(pfdtab, (intptr_t)hRead, O_RDONLY, SHFILE_FLAGS_PIPE, -1, "shfile_pipe", "pipe-rd");
+        if (fds[0] != -1)
+        {
+            fds[1] = shfile_insert(pfdtab, (intptr_t)hWrite, O_WRONLY, SHFILE_FLAGS_PIPE, -1, "shfile_pipe", "pipe-wr");
+            if (fds[1] != -1)
+                rc = 0;
+        }
+
+# else
+    int native_fds[2];
+
+    fds[1] = fds[0] = -1;
+    if (!pipe(native_fds))
+    {
+        fds[0] = shfile_copy_insert_and_close(pfdtab, &native_fds[0], O_RDONLY, SHFILE_FLAGS_PIPE, -1, "shfile_pipe", "pipe-rd");
+        if (fds[0] != -1)
+        {
+            fds[1] = shfile_copy_insert_and_close(pfdtab, &native_fds[1], O_WRONLY, SHFILE_FLAGS_PIPE, -1, "shfile_pipe", "pipe-wr");
+            if (fds[1] != -1)
+                rc = 0;
+        }
+# endif
+        if (fds[1] == -1)
+        {
+            int s = errno;
+            if (fds[0] != -1)
+            {
+                shmtxtmp tmp;
+                shmtx_enter(&pfdtab->mtx, &tmp);
+                rc = fds[0];
+                pfdtab->tab[rc].fd = -1;
+                pfdtab->tab[rc].oflags = 0;
+                pfdtab->tab[rc].shflags = 0;
+                pfdtab->tab[rc].native = -1;
+                shmtx_leave(&pfdtab->mtx, &tmp);
+            }
+
+# if K_OS == K_OS_WINDOWS
+            CloseHandle(hRead);
+            CloseHandle(hWrite);
+# else
+            close(native_fds[0]);
+            close(native_fds[1]);
+# endif
+            fds[0] = fds[1] = -1;
+            errno = s;
+            rc = -1;
+        }
+    }
+    else
+    {
+# if K_OS == K_OS_WINDOWS
+        errno = shfile_dos2errno(GetLastError());
+# endif
+        rc = -1;
+    }
+
+#else
+    rc = pipe(fds);
+#endif
+
+    TRACE2((NULL, "shfile_pipe() -> %d{%d,%d} [%d]\n", rc, fds[0], fds[1], errno));
+    return rc;
+}
+
+/**
+ * dup().
+ */
+int shfile_dup(shfdtab *pfdtab, int fd)
+{
+    return shfile_fcntl(pfdtab,fd, F_DUPFD, 0);
+}
+
+/**
+ * Move the file descriptor, closing any existing descriptor at @a fdto.
+ *
+ * @returns fdto on success, -1 and errno on failure.
+ * @param   pfdtab          The file descriptor table.
+ * @param   fdfrom          The descriptor to move.
+ * @param   fdto            Where to move it.
+ */
+int shfile_movefd(shfdtab *pfdtab, int fdfrom, int fdto)
+{
+#ifdef SHFILE_IN_USE
+    int         rc;
+    shmtxtmp    tmp;
+    shfile     *file = shfile_get(pfdtab, fdfrom, &tmp);
+    if (file)
+    {
+        /* prepare the new entry */
+        if ((unsigned)fdto >= pfdtab->size)
+            shfile_grow_tab_locked(pfdtab, fdto);
+        if ((unsigned)fdto < pfdtab->size)
+        {
+            if (pfdtab->tab[fdto].fd != -1)
+                shfile_native_close(pfdtab->tab[fdto].native, &pfdtab->tab[fdto], K_FALSE);
+
+            /* setup the target. */
+            pfdtab->tab[fdto].fd      = fdto;
+            pfdtab->tab[fdto].oflags  = file->oflags;
+            pfdtab->tab[fdto].shflags = file->shflags;
+            pfdtab->tab[fdto].native  = file->native;
+# ifdef DEBUG
+            pfdtab->tab[fdto].dbgname = file->dbgname;
+# endif
+
+            /* close the source. */
+            file->fd        = -1;
+            file->oflags    = 0;
+            file->shflags   = 0;
+            file->native    = -1;
+# ifdef DEBUG
+            file->dbgname   = NULL;
+# endif
+
+            rc = fdto;
+        }
+        else
+        {
+            errno = EMFILE;
+            rc = -1;
+        }
+
+        shfile_put(pfdtab, file, &tmp);
+    }
+    else
+        rc = -1;
+    return rc;
+
+#else
+    int fdnew = dup2(fdfrom, fdto);
+    if (fdnew >= 0)
+        close(fdfrom);
+    return fdnew;
+#endif
+}
+
+/**
+ * Move the file descriptor to somewhere at @a fdMin or above.
+ *
+ * @returns the new file descriptor success, -1 and errno on failure.
+ * @param   pfdtab          The file descriptor table.
+ * @param   fdfrom          The descriptor to move.
+ * @param   fdMin           The minimum descriptor.
+ */
+int shfile_movefd_above(shfdtab *pfdtab, int fdfrom, int fdMin)
+{
+#ifdef SHFILE_IN_USE
+    int         fdto;
+    shmtxtmp    tmp;
+    shfile     *file = shfile_get(pfdtab, fdfrom, &tmp);
+    if (file)
+    {
+        /* find a new place */
+        int i;
+        fdto = -1;
+        for (i = fdMin; (unsigned)i < pfdtab->size; i++)
+            if (pfdtab->tab[i].fd == -1)
+            {
+                fdto = i;
+                break;
+            }
+        if (fdto == -1)
+            fdto = shfile_grow_tab_locked(pfdtab, fdMin);
+        if (fdto != -1)
+        {
+            /* setup the target. */
+            pfdtab->tab[fdto].fd      = fdto;
+            pfdtab->tab[fdto].oflags  = file->oflags;
+            pfdtab->tab[fdto].shflags = file->shflags;
+            pfdtab->tab[fdto].native  = file->native;
+# ifdef DEBUG
+            pfdtab->tab[fdto].dbgname = file->dbgname;
+# endif
+
+            /* close the source. */
+            file->fd        = -1;
+            file->oflags    = 0;
+            file->shflags   = 0;
+            file->native    = -1;
+# ifdef DEBUG
+            file->dbgname   = NULL;
+# endif
+        }
+        else
+        {
+            errno = EMFILE;
+            fdto = -1;
+        }
+
+        shfile_put(pfdtab, file, &tmp);
+    }
+    else
+        fdto = -1;
+    return fdto;
+
+#else
+    int fdnew = fcntl(fdfrom, F_DUPFD, fdMin);
+    if (fdnew >= 0)
+        close(fdfrom);
+    return fdnew;
+#endif
+}
+
+/**
+ * close().
+ */
+int shfile_close(shfdtab *pfdtab, unsigned fd)
+{
+    int         rc;
+#ifdef SHFILE_IN_USE
+    shmtxtmp    tmp;
+    shfile     *file = shfile_get(pfdtab, fd, &tmp);
+    if (file)
+    {
+        shfile_native_close(file->native, file, K_FALSE);
+
+        file->fd = -1;
+        file->oflags = 0;
+        file->shflags = 0;
+        file->native = -1;
+# ifdef DEBUG
+        sh_free(NULL, file->dbgname);
+        file->dbgname = NULL;
+# endif
+
+        shfile_put(pfdtab, file, &tmp);
+        rc = 0;
+    }
+    else
+        rc = -1;
+
+#else
+    rc = close(fd);
+#endif
+
+    TRACE2((NULL, "shfile_close(%d) -> %d [%d]\n", fd, rc, errno));
+    return rc;
+}
+
+/**
+ * read().
+ */
+long shfile_read(shfdtab *pfdtab, int fd, void *buf, size_t len)
+{
+    long        rc;
+#ifdef SHFILE_IN_USE
+    shmtxtmp    tmp;
+    shfile     *file = shfile_get(pfdtab, fd, &tmp);
+    if (file)
+    {
+# if K_OS == K_OS_WINDOWS
+        DWORD dwRead = 0;
+        if (ReadFile((HANDLE)file->native, buf, (DWORD)len, &dwRead, NULL))
+            rc = dwRead;
+        else
+            rc = shfile_dos2errno(GetLastError());
+# else
+        rc = read(file->native, buf, len);
+# endif
+
+        shfile_put(pfdtab, file, &tmp);
+    }
+    else
+        rc = -1;
+
+#else
+    rc = read(fd, buf, len);
+#endif
+    return rc;
+}
+
+/**
+ * write().
+ */
+long shfile_write(shfdtab *pfdtab, int fd, const void *buf, size_t len)
+{
+    long        rc;
+#ifdef SHFILE_IN_USE
+    shmtxtmp    tmp;
+    shfile     *file = shfile_get(pfdtab, fd, &tmp);
+    if (file)
+    {
+# if K_OS == K_OS_WINDOWS
+        DWORD dwWritten = 0;
+        if (WriteFile((HANDLE)file->native, buf, (DWORD)len, &dwWritten, NULL))
+            rc = dwWritten;
+        else
+            rc = shfile_dos2errno(GetLastError());
+# else
+        rc = write(file->native, buf, len);
+# endif
+
+        file->shflags |= SHFILE_FLAGS_DIRTY; /* there should be no concurrent access, so this is safe. */
+        shfile_put(pfdtab, file, &tmp);
+    }
+    else
+        rc = -1;
+
+# ifdef DEBUG
+    if (fd != shthread_get_shell()->tracefd)
+        TRACE2((NULL, "shfile_write(%d,,%d) -> %d [%d]\n", fd, len, rc, errno));
+# endif
+
+#else
+    if (fd != shthread_get_shell()->tracefd)
+    {
+        int iSavedErrno = errno;
+        struct stat s;
+        int x;
+        x = fstat(fd, &s);
+        TRACE2((NULL, "shfile_write(%d) - %lu bytes (%d) - pos %lu - before; %o\n",
+                fd, (long)s.st_size, x, (long)lseek(fd, 0, SEEK_CUR), s.st_mode ));
+        K_NOREF(x);
+        errno = iSavedErrno;
+    }
+
+    rc = write(fd, buf, len);
+#endif
+    return rc;
+}
+
+/**
+ * lseek().
+ */
+long shfile_lseek(shfdtab *pfdtab, int fd, long off, int whench)
+{
+    long        rc;
+#ifdef SHFILE_IN_USE
+    shmtxtmp    tmp;
+    shfile     *file = shfile_get(pfdtab, fd, &tmp);
+    if (file)
+    {
+# if K_OS == K_OS_WINDOWS
+        kHlpAssert(SEEK_SET == FILE_BEGIN);
+        kHlpAssert(SEEK_CUR == FILE_CURRENT);
+        kHlpAssert(SEEK_END == FILE_END);
+        rc = SetFilePointer((HANDLE)file->native, off, NULL, whench);
+        if (rc == INVALID_SET_FILE_POINTER)
+            rc = shfile_dos2errno(GetLastError());
+# else
+        rc = lseek(file->native, off, whench);
+# endif
+
+        shfile_put(pfdtab, file, &tmp);
+    }
+    else
+        rc = -1;
+
+#else
+    rc = lseek(fd, off, whench);
+#endif
+
+    return rc;
+}
+
+int shfile_fcntl(shfdtab *pfdtab, int fd, int cmd, int arg)
+{
+    int rc;
+#ifdef SHFILE_IN_USE
+    shmtxtmp    tmp;
+    shfile     *file = shfile_get(pfdtab, fd, &tmp);
+    if (file)
+    {
+        switch (cmd)
+        {
+            case F_GETFL:
+                rc = file->oflags;
+                break;
+
+            case F_SETFL:
+            {
+                unsigned mask = O_NONBLOCK | O_APPEND | O_BINARY | O_TEXT;
+# ifdef O_DIRECT
+                mask |= O_DIRECT;
+# endif
+# ifdef O_ASYNC
+                mask |= O_ASYNC;
+# endif
+# ifdef O_SYNC
+                mask |= O_SYNC;
+# endif
+                if ((file->oflags & mask) == (arg & mask))
+                    rc = 0;
+                else
+                {
+# if K_OS == K_OS_WINDOWS
+                    kHlpAssert(0);
+                    errno = EINVAL;
+                    rc = -1;
+# else
+                    rc = fcntl(file->native, F_SETFL, arg);
+                    if (rc != -1)
+                        file->oflags = (file->oflags & ~mask) | (arg & mask);
+# endif
+                }
+                break;
+            }
+
+            case F_DUPFD:
+            {
+# if K_OS == K_OS_WINDOWS
+                HANDLE hNew = INVALID_HANDLE_VALUE;
+                if (DuplicateHandle(GetCurrentProcess(),
+                                    (HANDLE)file->native,
+                                    GetCurrentProcess(),
+                                    &hNew,
+                                    0,
+                                    FALSE /* bInheritHandle */,
+                                    DUPLICATE_SAME_ACCESS))
+                    rc = shfile_insert(pfdtab, (intptr_t)hNew, file->oflags, file->shflags, arg,
+                                       "shfile_fcntl", SHFILE_DBGNAME(file->dbgname));
+                else
+                    rc = shfile_dos2errno(GetLastError());
+# else
+                int nativeNew = fcntl(file->native, F_DUPFD, SHFILE_UNIX_MIN_FD);
+                if (nativeNew != -1)
+                    rc = shfile_insert(pfdtab, nativeNew, file->oflags, file->shflags, arg,
+                                       "shfile_fcntl", SHFILE_DBGNAME(file->dbgname));
+                else
+                    rc = -1;
+# endif
+                break;
+            }
+
+            default:
+                errno = -EINVAL;
+                rc = -1;
+                break;
+        }
+
+        shfile_put(pfdtab, file, &tmp);
+    }
+    else
+        rc = -1;
+
+#else
+    rc = fcntl(fd, cmd, arg);
+#endif
+
+    switch (cmd)
+    {
+        case F_GETFL: TRACE2((NULL, "shfile_fcntl(%d,F_GETFL,ignored=%d) -> %d [%d]\n", fd, arg, rc, errno));  break;
+        case F_SETFL: TRACE2((NULL, "shfile_fcntl(%d,F_SETFL,newflags=%#x) -> %d [%d]\n", fd, arg, rc, errno)); break;
+        case F_DUPFD: TRACE2((NULL, "shfile_fcntl(%d,F_DUPFD,minfd=%d) -> %d [%d]\n", fd, arg, rc, errno)); break;
+        default:  TRACE2((NULL, "shfile_fcntl(%d,%d,%d) -> %d [%d]\n", fd, cmd, arg, rc, errno)); break;
+    }
+    return rc;
+}
+
+int shfile_stat(shfdtab *pfdtab, const char *path, struct stat *pst)
+{
+#ifdef SHFILE_IN_USE
+    char    abspath[SHFILE_MAX_PATH];
+    int     rc;
+    rc = shfile_make_path(pfdtab, path, &abspath[0]);
+    if (!rc)
+    {
+# if K_OS == K_OS_WINDOWS
+#  if 1
+        rc = birdStatFollowLink(abspath, pst);
+#  else
+        int dir_slash = shfile_trailing_slash_hack(abspath);
+        rc = stat(abspath, pst); /** @todo re-implement stat. */
+        if (!rc && dir_slash && !S_ISDIR(pst->st_mode))
+        {
+            rc = -1;
+            errno = ENOTDIR;
+
+       }
+#  endif
+# else
+        rc = stat(abspath, pst);
+# endif
+    }
+    TRACE2((NULL, "shfile_stat(,%s,) -> %d [%d] st_size=%llu st_mode=%o\n",
+            path, rc, errno, (unsigned long long)pst->st_size, pst->st_mode));
+    return rc;
+#else
+    return stat(path, pst);
+#endif
+}
+
+/**
+ * @retval 1 if regular file.
+ * @retval 0 if found but not a regular file.
+ * @retval -1 and errno on failure
+ */
+int shfile_stat_isreg(shfdtab *pfdtab, const char *path)
+{
+#if defined(SHFILE_IN_USE) && K_OS == K_OS_WINDOWS
+    char    abspath[SHFILE_MAX_PATH];
+    KU16    mode = 0;
+    int     rc = shfile_make_path(pfdtab, path, &abspath[0]);
+    if (!rc)
+    {
+        rc = birdStatModeOnly(abspath, &mode, 0 /*fFollowLink*/);
+        if (rc >= 0)
+            rc = S_ISREG(mode) ? 1 : 0;
+    }
+    TRACE2((NULL, "shfile_stat_isreg(,%s,) -> %d [%d] st_mode=%o\n", path, rc, errno, mode));
+    return rc;
+#else
+    struct stat st;
+    int rc = shfile_stat(pfdtab, path, &st);
+    if (rc >= 0)
+        rc = S_ISREG(st.st_mode) ? 1 : 0;
+    return rc;
+#endif
+}
+
+/**
+ * Same as shfile_stat, but without the data structure.
+ */
+int shfile_stat_exists(shfdtab *pfdtab, const char *path)
+{
+#if defined(SHFILE_IN_USE) && K_OS == K_OS_WINDOWS
+    char    abspath[SHFILE_MAX_PATH];
+    KU16    mode = 0;
+    int     rc = shfile_make_path(pfdtab, path, &abspath[0]);
+    if (!rc)
+        rc = birdStatModeOnly(abspath, &mode, 0 /*fFollowLink*/);
+    TRACE2((NULL, "shfile_stat_exists(,%s,) -> %d [%d] st_mode=%o\n", path, rc, errno, mode));
+    return rc;
+#else
+    struct stat ignored;
+    return shfile_stat(pfdtab, path, &ignored);
+#endif
+}
+
+int shfile_lstat(shfdtab *pfdtab, const char *path, struct stat *pst)
+{
+    int     rc;
+#ifdef SHFILE_IN_USE
+    char    abspath[SHFILE_MAX_PATH];
+
+    rc = shfile_make_path(pfdtab, path, &abspath[0]);
+    if (!rc)
+    {
+# if K_OS == K_OS_WINDOWS
+#  if 1
+        rc = birdStatOnLink(abspath, pst);
+#  else
+        int dir_slash = shfile_trailing_slash_hack(abspath);
+        rc = stat(abspath, pst); /** @todo re-implement stat. */
+        if (!rc && dir_slash && !S_ISDIR(pst->st_mode))
+        {
+            rc = -1;
+            errno = ENOTDIR;
+        }
+#  endif
+# else
+        rc = lstat(abspath, pst);
+# endif
+    }
+#else
+    rc = stat(path, pst);
+#endif
+    TRACE2((NULL, "shfile_lstat(,%s,) -> %d [%d] st_size=%llu st_mode=%o\n",
+            path, rc, errno, (unsigned long long)pst->st_size, pst->st_mode));
+    return rc;
+}
+
+/**
+ * chdir().
+ */
+int shfile_chdir(shfdtab *pfdtab, const char *path)
+{
+    int         rc;
+#ifdef SHFILE_IN_USE
+    shinstance *psh = shthread_get_shell();
+    char        abspath[SHFILE_MAX_PATH];
+
+    rc = shfile_make_path(pfdtab, path, &abspath[0]);
+    if (!rc)
+    {
+        char *abspath_copy = sh_strdup(psh, abspath);
+        char *free_me = abspath_copy;
+        rc = chdir(abspath);
+        if (!rc)
+        {
+            shmtxtmp    tmp;
+            shmtx_enter(&pfdtab->mtx, &tmp);
+
+            shfile_fix_slashes(abspath_copy);
+            free_me = pfdtab->cwd;
+            pfdtab->cwd = abspath_copy;
+
+            shmtx_leave(&pfdtab->mtx, &tmp);
+        }
+        sh_free(psh, free_me);
+    }
+    else
+        rc = -1;
+#else
+    rc = chdir(path);
+#endif
+
+    TRACE2((NULL, "shfile_chdir(,%s) -> %d [%d]\n", path, rc, errno));
+    return rc;
+}
+
+/**
+ * getcwd().
+ */
+char *shfile_getcwd(shfdtab *pfdtab, char *buf, int size)
+{
+    char       *ret;
+#ifdef SHFILE_IN_USE
+
+    ret = NULL;
+    if (buf && !size)
+        errno = -EINVAL;
+    else
+    {
+        size_t      cwd_size;
+        shmtxtmp    tmp;
+        shmtx_enter(&pfdtab->mtx, &tmp);
+
+        cwd_size = strlen(pfdtab->cwd) + 1;
+        if (buf)
+        {
+            if (cwd_size <= (size_t)size)
+                ret = memcpy(buf, pfdtab->cwd, cwd_size);
+            else
+                errno = ERANGE;
+        }
+        else
+        {
+            if ((size_t)size < cwd_size)
+                size = (int)cwd_size;
+            ret = sh_malloc(shthread_get_shell(), size);
+            if (ret)
+                ret = memcpy(ret, pfdtab->cwd, cwd_size);
+            else
+                errno = ENOMEM;
+        }
+
+        shmtx_leave(&pfdtab->mtx, &tmp);
+    }
+#else
+    ret = getcwd(buf, size);
+#endif
+
+    TRACE2((NULL, "shfile_getcwd(,%p,%d) -> %s [%d]\n", buf, size, ret, errno));
+    return ret;
+}
+
+/**
+ * access().
+ */
+int shfile_access(shfdtab *pfdtab, const char *path, int type)
+{
+    int         rc;
+#ifdef SHFILE_IN_USE
+    char        abspath[SHFILE_MAX_PATH];
+
+    rc = shfile_make_path(pfdtab, path, &abspath[0]);
+    if (!rc)
+    {
+# ifdef _MSC_VER
+        if (type & X_OK)
+            type = (type & ~X_OK) | R_OK;
+# endif
+        rc = access(abspath, type);
+    }
+#else
+# ifdef _MSC_VER
+    if (type & X_OK)
+        type = (type & ~X_OK) | R_OK;
+# endif
+    rc = access(path, type);
+#endif
+
+    TRACE2((NULL, "shfile_access(,%s,%#x) -> %d [%d]\n", path, type, rc, errno));
+    return rc;
+}
+
+/**
+ * isatty()
+ */
+int shfile_isatty(shfdtab *pfdtab, int fd)
+{
+    int         rc;
+#ifdef SHFILE_IN_USE
+    shmtxtmp    tmp;
+    shfile     *file = shfile_get(pfdtab, fd, &tmp);
+    if (file)
+    {
+# if K_OS == K_OS_WINDOWS
+        rc = (file->shflags & SHFILE_FLAGS_TYPE_MASK) == SHFILE_FLAGS_TTY;
+# else
+        rc = isatty(file->native);
+# endif
+        shfile_put(pfdtab, file, &tmp);
+    }
+    else
+        rc = 0;
+#else
+    rc = isatty(fd);
+#endif
+
+    TRACE2((NULL, "isatty(%d) -> %d [%d]\n", fd, rc, errno));
+    return rc;
+}
+
+/**
+ * fcntl F_SETFD / FD_CLOEXEC.
+ */
+int shfile_cloexec(shfdtab *pfdtab, int fd, int closeit)
+{
+    int         rc;
+#ifdef SHFILE_IN_USE
+    shmtxtmp    tmp;
+    shfile     *file = shfile_get(pfdtab, fd, &tmp);
+    if (file)
+    {
+        if (closeit)
+            file->shflags |= SHFILE_FLAGS_CLOSE_ON_EXEC;
+        else
+            file->shflags &= ~SHFILE_FLAGS_CLOSE_ON_EXEC;
+        shfile_put(pfdtab, file, &tmp);
+        rc = 0;
+    }
+    else
+        rc = -1;
+#else
+    rc = fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0)
+                          | (closeit ? FD_CLOEXEC : 0));
+#endif
+
+    TRACE2((NULL, "shfile_cloexec(%d, %d) -> %d [%d]\n", fd, closeit, rc, errno));
+    return rc;
+}
+
+/**
+ * Sets the SHFILE_FLAGS_TRACE flag.
+ */
+int shfile_set_trace(shfdtab *pfdtab, int fd)
+{
+    int         rc;
+#ifdef SHFILE_IN_USE
+    shmtxtmp    tmp;
+    shfile     *file = shfile_get(pfdtab, fd, &tmp);
+    if (file)
+    {
+        file->shflags |= SHFILE_FLAGS_TRACE;
+        shfile_put(pfdtab, file, &tmp);
+        rc = 0;
+    }
+    else
+        rc = -1;
+#else
+    rc = 0;
+#endif
+
+    TRACE2((NULL, "shfile_set_trace(%d) -> %d\n", fd, rc));
+    return rc;
+}
+
+
+int shfile_ioctl(shfdtab *pfdtab, int fd, unsigned long request, void *buf)
+{
+    int         rc;
+#ifdef SHFILE_IN_USE
+    shmtxtmp    tmp;
+    shfile     *file = shfile_get(pfdtab, fd, &tmp);
+    if (file)
+    {
+# if K_OS == K_OS_WINDOWS
+        rc = -1;
+        errno = ENOSYS;
+# else
+        rc = ioctl(file->native, request, buf);
+# endif
+        shfile_put(pfdtab, file, &tmp);
+    }
+    else
+        rc = -1;
+#else
+    rc = ioctl(fd, request, buf);
+#endif
+
+    TRACE2((NULL, "ioctl(%d, %#x, %p) -> %d\n", fd, request, buf, rc));
+    return rc;
+}
+
+
+mode_t shfile_get_umask(shfdtab *pfdtab)
+{
+    /** @todo */
+    return 022;
+}
+
+void shfile_set_umask(shfdtab *pfdtab, mode_t mask)
+{
+    /** @todo */
+    (void)mask;
+}
+
+
+
+shdir *shfile_opendir(shfdtab *pfdtab, const char *dir)
+{
+#if defined(SHFILE_IN_USE) && K_OS == K_OS_WINDOWS
+    shdir  *pdir = NULL;
+
+    TRACE2((NULL, "shfile_opendir: dir='%s'\n", dir));
+    shfile_init_globals();
+    if (g_pfnNtQueryDirectoryFile)
+    {
+        char abspath[SHFILE_MAX_PATH];
+        if (shfile_make_path(pfdtab, dir, &abspath[0]) == 0)
+        {
+            HANDLE              hFile;
+            SECURITY_ATTRIBUTES SecurityAttributes;
+
+            SecurityAttributes.nLength = sizeof(SecurityAttributes);
+            SecurityAttributes.lpSecurityDescriptor = NULL;
+            SecurityAttributes.bInheritHandle = FALSE;
+
+            hFile = CreateFileA(abspath,
+                                GENERIC_READ,
+                                FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
+                                &SecurityAttributes,
+                                OPEN_EXISTING,
+                                FILE_ATTRIBUTE_DIRECTORY | FILE_FLAG_BACKUP_SEMANTICS,
+                                NULL /* hTemplateFile */);
+            if (hFile != INVALID_HANDLE_VALUE)
+            {
+                pdir = (shdir *)sh_malloc(shthread_get_shell(), sizeof(*pdir));
+                if (pdir)
+                {
+                    pdir->pfdtab = pfdtab;
+                    pdir->native = hFile;
+                    pdir->off    = ~(size_t)0;
+                }
+                else
+                    CloseHandle(hFile);
+            }
+            else
+            {
+                errno = shfile_dos2errno(GetLastError());
+                TRACE2((NULL, "shfile_opendir: CreateFileA(%s) -> %d/%d\n", abspath, GetLastError(), errno));
+            }
+        }
+    }
+    else
+        errno = ENOSYS;
+    return pdir;
+#else
+    TRACE2((NULL, "shfile_opendir: dir='%s'\n", dir));
+    return (shdir *)opendir(dir);
+#endif
+}
+
+shdirent *shfile_readdir(struct shdir *pdir)
+{
+#if defined(SHFILE_IN_USE) && K_OS == K_OS_WINDOWS
+    if (pdir)
+    {
+        NTSTATUS rcNt;
+
+        if (   pdir->off == ~(size_t)0
+            || pdir->off + sizeof(MY_FILE_NAMES_INFORMATION) >= pdir->cb)
+        {
+            MY_IO_STATUS_BLOCK Ios;
+
+            memset(&Ios, 0, sizeof(Ios));
+            rcNt = g_pfnNtQueryDirectoryFile(pdir->native,
+                                             NULL /*Event*/,
+                                             NULL /*ApcRoutine*/,
+                                             NULL /*ApcContext*/,
+                                             &Ios,
+                                             &pdir->buf[0],
+                                             sizeof(pdir->buf),
+                                             MY_FileNamesInformation,
+                                             FALSE /*ReturnSingleEntry*/,
+                                             NULL /*FileName*/,
+                                             pdir->off == ~(size_t)0 /*RestartScan*/);
+            if (rcNt >= 0 && rcNt != STATUS_PENDING)
+            {
+                pdir->cb  = Ios.Information;
+                pdir->off = 0;
+            }
+            else if (rcNt == STATUS_NO_MORE_FILES)
+                errno = 0; /* wrong? */
+            else
+                shfile_nt2errno(rcNt);
+        }
+
+        if (   pdir->off != ~(size_t)0
+            && pdir->off + sizeof(MY_FILE_NAMES_INFORMATION) <= pdir->cb)
+        {
+            PMY_FILE_NAMES_INFORMATION  pcur = (PMY_FILE_NAMES_INFORMATION)&pdir->buf[pdir->off];
+            ANSI_STRING                 astr;
+            UNICODE_STRING              ustr;
+
+            astr.Length = astr.MaximumLength = sizeof(pdir->ent.name);
+            astr.Buffer = &pdir->ent.name[0];
+
+            ustr.Length = ustr.MaximumLength = pcur->FileNameLength < ~(USHORT)0 ? (USHORT)pcur->FileNameLength : ~(USHORT)0;
+            ustr.Buffer = &pcur->FileName[0];
+
+            rcNt = g_pfnRtlUnicodeStringToAnsiString(&astr, &ustr, 0/*AllocateDestinationString*/);
+            if (rcNt < 0)
+                sprintf(pdir->ent.name, "conversion-failed-%08x-rcNt=%08x-len=%u",
+                        pcur->FileIndex, rcNt, pcur->FileNameLength);
+            if (pcur->NextEntryOffset)
+                pdir->off += pcur->NextEntryOffset;
+            else
+                pdir->off = pdir->cb;
+            return &pdir->ent;
+        }
+    }
+    else
+        errno = EINVAL;
+    return NULL;
+#else
+    struct dirent *pde = readdir((DIR *)pdir);
+    return pde ? (shdirent *)&pde->d_name[0] : NULL;
+#endif
+}
+
+void shfile_closedir(struct shdir *pdir)
+{
+#if defined(SHFILE_IN_USE) && K_OS == K_OS_WINDOWS
+    if (pdir)
+    {
+        CloseHandle(pdir->native);
+        pdir->pfdtab = NULL;
+        pdir->native = INVALID_HANDLE_VALUE;
+        sh_free(shthread_get_shell(), pdir);
+    }
+    else
+        errno = EINVAL;
+#else
+    closedir((DIR *)pdir);
+#endif
+}
+
diff --git a/src/kash/shfile.h b/src/kash/shfile.h
new file mode 100644
index 0000000..0052428
--- /dev/null
+++ b/src/kash/shfile.h
@@ -0,0 +1,229 @@
+/* $Id: shfile.h 3473 2020-09-16 21:12:58Z bird $ */
+/** @file
+ * File management.
+ */
+
+/*
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef ___shfile_h
+#define ___shfile_h
+
+#include "shtypes.h"
+#include "shthread.h"
+#include <fcntl.h>
+#include <sys/stat.h>
+#ifdef _MSC_VER
+# define _PATH_DEVNULL  "nul"
+# define _PATH_DEFPATH  "."
+#else
+# if !defined(__sun__)
+#  include <paths.h>
+# endif
+# ifndef _PATH_DEVNULL
+#  define _PATH_DEVNULL "/dev/null"
+# endif
+# ifndef _PATH_DEFPATH
+#  define _PATH_DEFPATH "/bin:/usr/bin:/sbin:/usr/sbin"
+# endif
+#endif
+#include <limits.h> /* for PIPE_BUF */
+#ifndef _MSC_VER
+# include <fcntl.h>
+# include <unistd.h>
+# ifndef O_BINARY
+#  define O_BINARY  0
+# endif
+# ifndef O_TEXT
+#  define O_TEXT    0
+# endif
+
+#else
+# include <io.h>
+# include <direct.h>
+
+# define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
+# define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
+# define S_ISLNK(m) 0
+# define S_IRWXU    (_S_IREAD | _S_IWRITE | _S_IEXEC)
+# define S_IXUSR    _S_IEXEC
+# define S_IWUSR    _S_IWRITE
+# define S_IRUSR    _S_IREAD
+# define S_IRWXG    0000070
+# define S_IRGRP    0000040
+# define S_IWGRP    0000020
+# define S_IXGRP    0000010
+# define S_IRWXO    0000007
+# define S_IROTH    0000004
+# define S_IWOTH    0000002
+# define S_IXOTH    0000001
+# define S_ISUID    0004000
+# define S_ISGID    0002000
+# define ALLPERMS   0000777
+
+# define F_DUPFD    0
+# define F_GETFD    1
+# define F_SETFD    2
+# define F_GETFL    3
+# define F_SETFL    4
+# define FD_CLOEXEC 1
+
+# define F_OK       0
+# define X_OK       1
+# define W_OK       2
+# define R_OK       4
+
+# define O_NONBLOCK 0 /** @todo */
+
+#endif
+#if K_OS == K_OS_WINDOWS
+# include "nt/ntstat.h"
+#endif
+
+
+/**
+ * One file.
+ */
+typedef struct shfile
+{
+    int                 fd;             /**< The shell file descriptor number. */
+    unsigned            oflags;         /**< Open flags. */
+    unsigned            shflags;        /**< The shell file descriptor flags. */
+    intptr_t            native;         /**< The native file descriptor number. */
+#ifdef DEBUG
+    char               *dbgname;        /**< The name of the file, if applicable, debug builds only. */
+#  define SHFILE_DBGNAME(a) a
+# else
+#  define SHFILE_DBGNAME(a) NULL
+#endif
+} shfile;
+
+/** @name shfile::shflags values.
+ * @{
+ */
+#define SHFILE_FLAGS_CLOSE_ON_EXEC      0x0001
+#define SHFILE_FLAGS_TRACE              0x0002  /**< The 'trace' file, keep open after execve. */
+#define SHFILE_FLAGS_TYPE_MASK          0x00f0
+#define SHFILE_FLAGS_FILE               0x0000
+#define SHFILE_FLAGS_PIPE               0x0010
+#define SHFILE_FLAGS_DIR                0x0020
+#define SHFILE_FLAGS_TTY                0x0030
+#define SHFILE_FLAGS_DIRTY              0x0100  /**< The file has been written to. */
+/** @} */
+
+/**
+ * The file descriptor table for a shell.
+ */
+typedef struct shfdtab
+{
+    shmtx               mtx;            /**< Mutex protecting any operations on the table and it's handles. */
+    char               *cwd;            /**< The current directory for this shell instance. */
+    unsigned            size;           /**< The size of the table (number of entries). */
+    shfile             *tab;            /**< Pointer to the table. */
+} shfdtab;
+
+int shfile_init(shfdtab *, shfdtab *);
+void shfile_uninit(shfdtab *, int);
+void shfile_fork_win(shfdtab *pfdtab, int set, intptr_t *hndls);
+typedef struct shfdexecwin
+{
+    int inherithandles;
+    int startsuspended;
+    shmtxtmp tmp;
+    int replacehandles[3];
+    intptr_t handles[3];
+    void *strtinfo;
+} shfdexecwin;
+int shfile_exec_win(shfdtab *pfdtab, int prepare, shfdexecwin *info);
+int shfile_exec_unix(shfdtab *pfdtab);
+#if K_OS == K_OS_WINDOWS && defined(KASH_ASYNC_CLOSE_HANDLE)
+void shfile_async_close_sync(void);
+#endif
+
+int shfile_open(shfdtab *, const char *, unsigned, mode_t);
+#if K_OS == K_OS_WINDOWS
+# define SHFILE_PIPE_SIZE   65536
+#elif defined(PIPE_BUF)
+# define SHFILE_PIPE_SIZE   PIPE_BUF
+#else
+# define SHFILE_PIPE_SIZE   4096
+#endif
+int shfile_pipe(shfdtab *, int [2]);
+int shfile_close(shfdtab *, unsigned);
+long shfile_read(shfdtab *, int, void *, size_t);
+long shfile_write(shfdtab *, int, const void *, size_t);
+long shfile_lseek(shfdtab *, int, long, int);
+int shfile_fcntl(shfdtab *, int fd, int cmd, int arg);
+int shfile_dup(shfdtab *, int fd);
+int shfile_movefd(shfdtab *, int fdfrom, int fdto);
+int shfile_movefd_above(shfdtab *, int fdfrom, int fdmin);
+
+int shfile_stat(shfdtab *, const char *, struct stat *);
+int shfile_stat_isreg(shfdtab *, const char *);  /**< returns -1, 0 or 1. */
+int shfile_stat_exists(shfdtab *, const char *); /**< same as shfile_stat, but discards the stat data. */
+int shfile_lstat(shfdtab *, const char *, struct stat *);
+int shfile_chdir(shfdtab *, const char *);
+char *shfile_getcwd(shfdtab *, char *, int);
+int shfile_access(shfdtab *, const char *, int);
+int shfile_isatty(shfdtab *, int);
+int shfile_cloexec(shfdtab *, int, int);
+int shfile_set_trace(shfdtab *, int);
+int shfile_ioctl(shfdtab *, int, unsigned long, void *);
+#if defined(_MSC_VER) || defined(__OS2__)
+# define TIOCGWINSZ         0x4201
+typedef struct sh_winsize
+{
+    unsigned ws_row;        /**< Rows, in characters. */
+    unsigned ws_col;        /**< Columns, in characters. */
+    unsigned ws_xpixel;     /**< Horizontal size, pixels. */
+    unsigned ws_ypixel;     /**< Vertical size, pixels. */
+} sh_winsize;
+#else
+typedef struct winsize sh_winsize;
+#endif
+mode_t shfile_get_umask(shfdtab *);
+void   shfile_set_umask(shfdtab *, mode_t);
+
+
+typedef struct sh_dirent
+{
+    char name[260];
+} shdirent;
+
+typedef struct shdir
+{
+    shfdtab    *pfdtab;
+    void       *native;
+    shdirent    ent;
+#if K_OS == K_OS_WINDOWS
+    size_t      off;
+    size_t      cb;
+    char        buf[32768 - sizeof(void *) * 2 - sizeof(shdirent) * 2];
+#endif
+} shdir;
+
+shdir *shfile_opendir(shfdtab *, const char *);
+shdirent *shfile_readdir(struct shdir *);
+void shfile_closedir(struct shdir *);
+
+#endif
+
diff --git a/src/kash/shfork-win.c b/src/kash/shfork-win.c
new file mode 100644
index 0000000..7ca0d56
--- /dev/null
+++ b/src/kash/shfork-win.c
@@ -0,0 +1,290 @@
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <string.h>
+#include <locale.h>
+#include "shinstance.h"
+#include <Windows.h>
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** The stack size. This is also defined in shforkA-win.asm. */
+#define SHFORK_STACK_SIZE (1*1024*1024)
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+static void *g_stack_base = 0;
+static void *g_stack_limit = 0;
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static void *shfork_string_to_ptr(const char *str, const char *argv0, const char *what);
+
+/* in shforkA-win.asm: */
+extern pid_t shfork_do_it(shinstance *psh);
+extern void shfork_resume(void *cur, void *base, void *limit);
+
+/* called by shforkA-win.asm: */
+void *shfork_maybe_forked(int argc, char **argv, char **envp);
+extern int shfork_body(shinstance *psh, void *stack_ptr);
+extern void init_syntax(void);
+
+
+/**
+ * Called by shforkA-win.asm to check whether we're a forked child
+ * process or not.
+ *
+ * In the former case we will resume execution at the fork resume
+ * point. In the latter we'll allocate a new stack of the forkable
+ * heap and return it to the caller so real_main() in main.c can be
+ * invoked on it.
+ *
+ * @returns Stack or not at all.
+ * @param   argc    Argument count.
+ * @param   argv    Argument vector.
+ * @param   envp    Environment vector.
+ */
+void *shfork_maybe_forked(int argc, char **argv, char **envp)
+{
+    void *stack_ptr;
+
+    /*
+     * Are we actually forking?
+     */
+    if (    argc != 8
+        ||  strcmp(argv[1], "--!forked!--")
+        ||  strcmp(argv[2], "--stack-address")
+        ||  strcmp(argv[4], "--stack-base")
+        ||  strcmp(argv[6], "--stack-limit"))
+    {
+        char *stack;
+        shheap_init(NULL);
+        g_stack_limit = stack = (char *)sh_malloc(NULL, SHFORK_STACK_SIZE);
+        g_stack_base = stack += SHFORK_STACK_SIZE;
+        return stack;
+    }
+
+    /*
+     * Do any init that needs to be done before resuming the
+     * fork() call.
+     */
+    setlocale(LC_ALL, "");
+
+    /*
+     * Convert the stack addresses.
+     */
+    stack_ptr     = shfork_string_to_ptr(argv[3], argv[0], "--stack-address");
+    g_stack_base  = shfork_string_to_ptr(argv[5], argv[0], "--stack-base");
+    g_stack_limit = shfork_string_to_ptr(argv[7], argv[0], "--stack-limit");
+    kHlpAssert((uintptr_t)stack_ptr < (uintptr_t)g_stack_base);
+    kHlpAssert((uintptr_t)stack_ptr > (uintptr_t)g_stack_limit);
+
+    /*
+     * Switch stack and jump to the fork resume point.
+     */
+    shfork_resume(stack_ptr, g_stack_base, g_stack_limit);
+    /* (won't get here) */
+    return NULL;
+}
+
+/***
+ * Converts a string into a pointer.
+ *
+ * @returns Pointer.
+ * @param   argv0   The program name in case of error.
+ * @param   str     The string to convert.
+ */
+static void *shfork_string_to_ptr(const char *str, const char *argv0, const char *what)
+{
+    const char *start = str;
+    intptr_t ptr = 0;
+    if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
+        str += 2;
+    while (*str)
+    {
+        unsigned digit;
+        switch (*str)
+        {
+            case '0':            digit =   0; break;
+            case '1':            digit =   1; break;
+            case '2':            digit =   2; break;
+            case '3':            digit =   3; break;
+            case '4':            digit =   4; break;
+            case '5':            digit =   5; break;
+            case '6':            digit =   6; break;
+            case '7':            digit =   7; break;
+            case '8':            digit =   8; break;
+            case '9':            digit =   9; break;
+            case 'a': case 'A':  digit = 0xa; break;
+            case 'b': case 'B':  digit = 0xb; break;
+            case 'c': case 'C':  digit = 0xc; break;
+            case 'd': case 'D':  digit = 0xd; break;
+            case 'e': case 'E':  digit = 0xe; break;
+            case 'f': case 'F':  digit = 0xf; break;
+            default:
+                fprintf(stderr, "%s: fatal error: Invalid %s '%s'\n", argv0, what, start);
+                exit(2);
+        }
+        ptr <<= 4;
+        ptr |= digit;
+        str++;
+    }
+    return (void *)ptr;
+}
+
+/**
+ * Do the fork.
+ * @returns same as fork().
+ * @param   psh             The shell that's forking.
+ */
+int shfork_do(shinstance *psh)
+{
+    /* save globals */
+    void *pheap_head = shheap_get_head();
+    pid_t pid = shfork_do_it(psh);
+    if (pid == 0)
+    {
+        /* reinit stuff, only the heap is copied! */
+        shthread_set_shell(psh);
+        shheap_init(pheap_head);
+        setlocale(LC_ALL, "");
+        init_syntax();
+        sh_init_globals();
+    }
+    return pid;
+}
+
+/**
+ * Create the child process making sure it inherits all our handles,
+ * copy of the forkable heap and kick it off.
+ *
+ * Called by shfork_do_it() in shforkA-win.asm.
+ *
+ * @returns child pid on success, -1 and errno on failure.
+ * @param   psh             The shell that's forking.
+ * @param   stack_ptr       The stack address at which the guest is suppost to resume.
+ */
+int shfork_body(shinstance *psh, void *stack_ptr)
+{
+    PROCESS_INFORMATION ProcInfo;
+    STARTUPINFO StrtInfo;
+    intptr_t hndls[3];
+    char szExeName[1024];
+    char szCmdLine[1024+256];
+    DWORD cch;
+    int rc = 0;
+
+    kHlpAssert((uintptr_t)stack_ptr < (uintptr_t)g_stack_base);
+    kHlpAssert((uintptr_t)stack_ptr > (uintptr_t)g_stack_limit);
+
+    /*
+     * Mark all handles inheritable and get the three standard handles.
+     */
+    shfile_fork_win(&psh->fdtab, 1 /* set */, &hndls[0]);
+
+    /*
+     * Create the process.
+     */
+    cch = GetModuleFileName(GetModuleHandle(NULL), szExeName, sizeof(szExeName));
+    if (cch > 0)
+    {
+#if 0 /* quoting the program name doesn't seems to be working :/ */
+        szCmdLine[0] = '"';
+        memcpy(&szCmdLine[1], szExeName, cch);
+        szCmdLine[++cch] = '"';
+#else
+        memcpy(&szCmdLine[0], szExeName, cch);
+#endif
+        cch += sprintf(&szCmdLine[cch], " --!forked!-- --stack-address %p --stack-base %p --stack-limit %p",
+                       stack_ptr, g_stack_base, g_stack_limit);
+        szCmdLine[cch+1] = '\0';
+        TRACE2((NULL, "shfork_body: szCmdLine=%s\n", szCmdLine));
+
+        memset(&StrtInfo, '\0', sizeof(StrtInfo)); /* just in case. */
+        StrtInfo.cb = sizeof(StrtInfo);
+        StrtInfo.lpReserved = NULL;
+        StrtInfo.lpDesktop = NULL;
+        StrtInfo.lpTitle = NULL;
+        StrtInfo.dwX = 0;
+        StrtInfo.dwY = 0;
+        StrtInfo.dwXSize = 0;
+        StrtInfo.dwYSize = 0;
+        StrtInfo.dwXCountChars = 0;
+        StrtInfo.dwYCountChars = 0;
+        StrtInfo.dwFillAttribute = 0;
+        StrtInfo.dwFlags = STARTF_USESTDHANDLES;;
+        StrtInfo.wShowWindow = 0;
+        StrtInfo.cbReserved2 = 0;
+        StrtInfo.lpReserved2 = NULL;
+        StrtInfo.hStdInput  = (HANDLE)hndls[0];
+        StrtInfo.hStdOutput = (HANDLE)hndls[1];
+        StrtInfo.hStdError  = (HANDLE)hndls[2];
+        if (CreateProcess(szExeName,
+                          szCmdLine,
+                          NULL,         /* pProcessAttributes */
+                          NULL,         /* pThreadAttributes */
+                          TRUE,         /* bInheritHandles */
+                          CREATE_SUSPENDED,
+                          NULL,         /* pEnvironment */
+                          NULL,         /* pCurrentDirectory */
+                          &StrtInfo,
+                          &ProcInfo))
+        {
+            /*
+             * Copy the memory to the child.
+             */
+            rc = shheap_fork_copy_to_child(ProcInfo.hProcess);
+            if (!rc)
+            {
+                if (ResumeThread(ProcInfo.hThread) != (DWORD)-1)
+                {
+                    rc = sh_add_child(psh, ProcInfo.dwProcessId, ProcInfo.hProcess, NULL);
+                    if (!rc)
+                        rc = (int)ProcInfo.dwProcessId;
+                }
+                else
+                {
+                    DWORD dwErr = GetLastError();
+                    fprintf(stderr, "shfork: ResumeThread() -> %d\n", dwErr);
+                    errno = EINVAL;
+                    rc = -1;
+                }
+            }
+            if (rc == -1)
+            {
+                TerminateProcess(ProcInfo.hProcess, 127);
+                /* needed?: ResumeThread(ProcInfo.hThread); */
+                CloseHandle(ProcInfo.hProcess);
+            }
+            CloseHandle(ProcInfo.hThread);
+        }
+        else
+        {
+            DWORD dwErr = GetLastError();
+            fprintf(stderr, "shfork: CreateProcess(%s) -> %d\n", szExeName, dwErr);
+            errno = EINVAL;
+            rc = -1;
+        }
+    }
+    else
+    {
+        DWORD dwErr = GetLastError();
+        fprintf(stderr, "shfork: GetModuleFileName() -> %d\n", dwErr);
+        errno = EINVAL;
+        rc = -1;
+    }
+
+    /*
+     * Restore the handle inherit property.
+     */
+    shfile_fork_win(&psh->fdtab, 0 /* restore */, NULL);
+
+    return rc;
+}
diff --git a/src/kash/shforkA-win.asm b/src/kash/shforkA-win.asm
new file mode 100644
index 0000000..6db4f28
--- /dev/null
+++ b/src/kash/shforkA-win.asm
@@ -0,0 +1,338 @@
+; $Id: shforkA-win.asm 2416 2010-09-14 00:30:30Z bird $
+;; @file
+; shforkA-win.asm - assembly routines used when forking on Windows.
+;
+
+;
+; Copyright (c) 2009-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+;
+; This file is part of kBuild.
+;
+; kBuild is free software; you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; kBuild is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+;
+;
+
+;*******************************************************************************
+;*      Defined Constants And Macros                                           *
+;*******************************************************************************
+%ifdef KBUILD_ARCH_AMD64
+ %define NAME(name) name
+%else
+ %define NAME(name) _ %+ name
+%endif
+
+;; The stack size. This is also defined in shfork-win.c.
+%define SHFORK_STACK_SIZE (1*1024*1024)
+
+
+;*******************************************************************************
+;*      External Symbols                                                       *
+;*******************************************************************************
+extern NAME(real_main)
+extern NAME(shfork_maybe_forked)
+extern NAME(shfork_body)
+
+
+[section .text]
+
+;;
+; C main() wrapper.
+;
+NAME(main):
+global NAME(main)
+%ifdef KBUILD_ARCH_AMD64
+[proc_frame main]
+%endif
+
+        ;
+        ; Prolog, spilling parameters from registers.
+        ;
+%ifdef KBUILD_ARCH_AMD64
+        [pushreg rbp]
+        push    rbp
+        [setframe rbp, 0]
+        mov     rbp, rsp
+        [allocstack 0x40]
+        sub     rsp, 40h
+        and     rsp, ~1fh
+        mov     [rbp-08h], rcx          ; argc
+        mov     [rbp-10h], rdx          ; argv
+        mov     [rbp-18h], r8           ; envp
+        [endprolog]
+%else
+        push    ebp
+        mov     ebp, esp
+        sub     esp, 40h
+        and     esp, ~1fh
+%endif
+
+        ;
+        ; Call shfork_maybe_forked. This will not return if we're forking.
+        ;
+%ifndef KBUILD_ARCH_AMD64
+        mov     ecx, [ebp +  8h]        ; argc
+        mov     edx, [ebp + 0ch]        ; argv
+        mov     eax, [ebp + 10h]        ; envp
+        mov     [esp     ], ecx
+        mov     [esp + 4h], edx
+        mov     [esp + 8h], eax
+%endif
+        call    NAME(shfork_maybe_forked)
+
+        ;
+        ; Ok, it returned which means we're not forking.
+        ;
+        ; The accumulator register is now pointing to the top of the
+        ; stack we're going to call real_main on. Switch and call it.
+        ;
+        ; The TIB adjustments is required or we'll crash in longjmp/unwind.
+        ;
+%ifdef KBUILD_ARCH_AMD64
+        mov     [rsp + 18h], rax
+        mov     [rax -  8h], rsp
+
+        mov     r10, [gs:08h]           ; StackBase  (the higher value)
+        mov     r11, [gs:10h]           ; StackLimit (the lower value)
+        mov     [rax - 10h], r10
+        mov     [rax - 18h], r11
+        cmp     rax, r10
+        jb      .below
+        mov     [gs:08h], rax
+.below:
+        lea     r9, [rax - SHFORK_STACK_SIZE]
+        cmp     r9, r11
+        ja      .above
+        mov     [gs:10h], r9
+.above:
+
+        mov     rcx, [rbp - 08h]        ; argc
+        mov     rdx, [rbp - 10h]        ; argv
+        mov     r8,  [rbp - 18h]        ; envp
+
+        lea     rsp, [rax - 40h]        ; Switch!
+%else
+        mov     [esp + 18h], eax
+        mov     [eax - 4], esp
+        lea     esp, [eax - 40h]        ; Switch!
+
+        mov     edx, [fs:04h]           ; StackBase  (the higher value)
+        mov     ecx, [fs:08h]           ; StackLimit (the lower value)
+        mov     [eax - 10h], edx
+        mov     [eax - 18h], ecx
+        cmp     eax, edx
+        jb      .below
+        mov     [fs:04h], eax
+.below:
+        lea     edx, [eax - SHFORK_STACK_SIZE]
+        cmp     edx, ecx
+        ja      .above
+        mov     [fs:08h], edx
+.above:
+
+        mov     ecx, [ebp +  8h]        ; argc
+        mov     edx, [ebp + 0ch]        ; argv
+        mov     eax, [ebp + 10h]        ; envp
+
+        mov     [esp     ], ecx
+        mov     [esp + 4h], edx
+        mov     [esp + 8h], eax
+%endif
+        call    NAME(real_main)
+
+        ;
+        ; Switch back the stack, restore the TIB fields and we're done.
+        ;
+%ifdef KBUILD_ARCH_AMD64
+        lea     r11, [rsp + 40h]
+        mov     rsp, [rsp + 38h]
+        mov     r8, [r11 - 10h]
+        mov     r9, [r11 - 18h]
+        mov     [gs:08h], r8
+        mov     [gs:10h], r9
+%else
+        lea     edx, [esp + 40h]
+        mov     esp, [esp + 2ch]
+        mov     ecx, [edx - 10h]
+        mov     edx, [edx - 18h]
+        mov     [fs:04h], ecx
+        mov     [fs:08h], edx
+%endif
+        leave
+        ret
+%ifdef KBUILD_ARCH_AMD64
+[endproc_frame main]
+%endif
+
+
+;;
+; sh_fork() worker
+;
+; @returns      See fork().
+; @param        psh
+;
+NAME(shfork_do_it):
+global NAME(shfork_do_it)
+%ifdef KBUILD_ARCH_AMD64
+        [proc_frame shfork_do_it]
+        [pushreg rbp]
+        push    rbp
+        [setframe rbp, 0]
+        mov     rbp, rsp
+        [allocstack 0x400]
+        sub     rsp, 400h
+        and     rsp, ~1ffh
+[endprolog]
+%else
+        push    ebp
+        mov     ebp, esp
+        sub     esp, 400h
+        and     esp, ~1ffh
+%endif
+
+        ;
+        ; Save most registers so they can be restored in the child.
+        ;
+%ifdef KBUILD_ARCH_AMD64
+        fxsave  [rsp]
+        mov     [rsp + 200h], rbp
+        mov     [rsp + 208h], rax
+        mov     [rsp + 210h], rbx
+        mov     [rsp + 218h], rcx
+        mov     [rsp + 220h], rdx
+        mov     [rsp + 228h], rsi
+        mov     [rsp + 230h], rdi
+        mov     [rsp + 238h],  r8
+        mov     [rsp + 240h],  r9
+        mov     [rsp + 248h], r10
+        mov     [rsp + 250h], r11
+        mov     [rsp + 258h], r12
+        mov     [rsp + 260h], r13
+        mov     [rsp + 268h], r14
+        mov     [rsp + 270h], r15
+%else
+        fxsave  [esp]
+        mov     [esp + 200h], ebp
+        mov     [esp + 208h], eax
+        mov     [esp + 210h], ebx
+        mov     [esp + 218h], ecx
+        mov     [esp + 220h], edx
+        mov     [esp + 228h], esi
+        mov     [esp + 230h], edi
+%endif
+
+        ;
+        ; Call the shfork_body that will spawn the child and all that.
+        ;
+%ifdef KBUILD_ARCH_AMD64
+        ;mov     rcx, rcx               ; psh
+        mov     rdx, rsp                ; stack_ptr
+        sub     rsp, 20h
+        call    NAME(shfork_body)
+        lea     rsp, [rsp + 20h]
+%else
+        mov     edx, esp
+        mov     ecx, [ebp + 8h]         ; psh
+        sub     esp, 20h
+        mov     [esp    ], ecx
+        mov     [esp + 4], edx          ; stack_ptr
+        call    NAME(shfork_body)
+        lea     esp, [esp + 20h]
+%endif
+
+        ;
+        ; Just leave the function, no need to restore things.
+        ;
+        leave
+        ret
+%ifdef KBUILD_ARCH_AMD64
+[endproc_frame shfork_do_it]
+%endif
+
+
+;;
+; Switch the stack, restore the register and leave as if we'd called shfork_do_it.
+;
+; @param        cur     Current stack pointer.
+; @param        base    The stack base  (higher value).
+; @param        limit   The stack limit (lower value).
+;
+NAME(shfork_resume):
+global NAME(shfork_resume)
+%ifdef KBUILD_ARCH_AMD64
+        mov     rsp, rcx
+%else
+        mov     ecx, [esp + 4]
+        mov     edx, [esp + 8]
+        mov     eax, [esp + 12]
+        mov     esp, ecx
+%endif
+
+        ;
+        ; Adjust stack stuff in the TIB (longjmp/unwind).
+        ;
+%ifdef KBUILD_ARCH_AMD64
+        cmp     rdx, [gs:08h]           ; StackBase  (the higher value)
+        jb      .below
+        mov     [gs:08h], rdx
+.below:
+        cmp     r8,  [gs:10h]           ; StackLimit
+        ja      .above
+        mov     [gs:10h], r8
+.above:
+%else
+        cmp     edx, [fs:04h]           ; StackBase  (the higher value)
+        jb      .below
+        mov     [fs:04h], edx
+.below:
+        cmp     eax, [fs:08h]           ; StackLimit
+        ja      .above
+        mov     [fs:08h], eax
+.above:
+%endif
+
+        ;
+        ; Restore most of the registers.
+        ;
+        ;; @todo xmm registers may require explicit saving/restoring...
+%ifdef KBUILD_ARCH_AMD64
+        frstor  [rsp]
+        mov     rbp, [rsp + 200h]
+        mov     rax, [rsp + 208h]
+        mov     rbx, [rsp + 210h]
+        mov     rcx, [rsp + 218h]
+        mov     rdx, [rsp + 220h]
+        mov     rsi, [rsp + 228h]
+        mov     rdi, [rsp + 230h]
+        mov      r8, [rsp + 238h]
+        mov      r9, [rsp + 240h]
+        mov     r10, [rsp + 248h]
+        mov     r11, [rsp + 250h]
+        mov     r12, [rsp + 258h]
+        mov     r13, [rsp + 260h]
+        mov     r14, [rsp + 268h]
+        mov     r15, [rsp + 270h]
+%else
+        frstor  [esp]
+        mov     ebp, [esp + 200h]
+        mov     eax, [esp + 208h]
+        mov     ebx, [esp + 210h]
+        mov     ecx, [esp + 218h]
+        mov     edx, [esp + 220h]
+        mov     esi, [esp + 228h]
+        mov     edi, [esp + 230h]
+%endif
+        xor     eax, eax                ; the child returns 0.
+        leave
+        ret
+
diff --git a/src/kash/shheap.c b/src/kash/shheap.c
new file mode 100644
index 0000000..cc481fb
--- /dev/null
+++ b/src/kash/shheap.c
@@ -0,0 +1,596 @@
+/* $Id: shheap.c 3477 2020-09-17 21:52:16Z bird $ */
+/** @file
+ * The shell memory heap methods.
+ */
+
+/*
+ * Copyright (c) 2009-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "shheap.h"
+#include <string.h>
+#include <stdlib.h>
+#include "shinstance.h"
+
+#if K_OS == K_OS_WINDOWS && defined(SH_FORKED_MODE)
+# define SHHEAP_IN_USE
+#endif
+
+#ifdef SHHEAP_IN_USE
+# if K_OS == K_OS_WINDOWS
+#  include <Windows.h>
+# else
+#  include <unistd.h>
+# endif
+#endif
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+#ifdef SHHEAP_IN_USE
+/**
+ * heap memory block header.
+ */
+typedef struct shmemhdr
+{
+    size_t              magic;          /**< Magic value */
+    size_t              size;           /**< The block size */
+    struct shmemhdr    *next;           /**< Forward pointer. */
+    struct shmemhdr    *prev;           /**< Backward pointer. */
+    struct shmemhdr    *next2;          /**< Free/Shell list forward. */
+    struct shmemhdr    *prev2;          /**< Free/Shell list backward. */
+    struct shinstance  *psh;            /**< The shell who allocated it. */
+    struct shmemchunk  *chunk;          /**< The chunk who owns this. */
+} shmemhdr;
+
+/** Free block magic (shmemhdr::magic) */
+#define SHMEMHDR_MAGIC_FREE     0xbeeff00d
+/** Used block magic (shmemhdr::magic) */
+#define SHMEMHDR_MAGIC_USED     0xfeedface
+
+typedef struct shmemchunk
+{
+    struct shmemhdr    *head;           /**< Head of the block list. */
+    struct shmemhdr    *free_head;      /**< Head of the free list. */
+    struct shmemchunk  *next;           /**< The next block. */
+    struct shmemchunk  *prev;           /**< The previous block. */
+    size_t              size;           /**< Chunk size. */
+    size_t              magic;          /**< Magic value. */
+    size_t              padding0;
+    size_t              padding1;
+} shmemchunk;
+
+/** shmemchunk::magic */
+#define SHMEMCHUNK_MAGIC        0x12345678
+
+#endif /* K_OS_WINDOWS */
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+#define SHHEAP_ALIGN(sz)        (((sz) + 31) & ~(size_t)31)
+#define SHHEAP_CHUNK_ALIGN(sz)  (((sz) + 0xffff) & ~(size_t)0xffff)
+#define SHHEAP_MIN_CHUNK        0x80000 //(1024*1024)
+#ifdef NDEBUG
+# define SHHEAP_CHECK()         do { } while (0)
+# define SHHEAP_CHECK_2()       do { } while (0)
+# define SHHEAP_ASSERT(expr)    do { } while (0)
+# define SHHEAP_POISON_PSH(p,v) (p)
+# define SHHEAP_POISON_NULL(v)  NULL
+#else
+# define SHHEAP_CHECK()         shheap_check()
+# define SHHEAP_CHECK_2()       shheap_check()
+# define SHHEAP_ASSERT(expr)    kHlpAssert(expr)
+# define SHHEAP_POISON_PSH(p,v) ((shinstance *)(v))
+# define SHHEAP_POISON_NULL(v)  ((void *)(v))
+#endif
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+#ifdef SHHEAP_IN_USE
+/** The heap lock. */
+static shmtx        g_sh_heap_mtx;
+/** The heap.
+ * This is a list of chunks. */
+static shmemchunk  *g_sh_heap;
+#endif
+
+
+int shheap_init(void *phead)
+{
+    int rc;
+#ifdef SHHEAP_IN_USE
+    SHHEAP_ASSERT(SHHEAP_ALIGN(sizeof(shmemhdr)) == sizeof(shmemhdr));
+    rc = shmtx_init(&g_sh_heap_mtx);
+    g_sh_heap = (shmemchunk *)phead; /* non-zero on fork() */
+#else
+    rc = 0;
+#endif
+    return rc;
+}
+
+#ifdef SHHEAP_IN_USE
+
+# if K_OS == K_OS_WINDOWS
+
+/**
+ * Get the head so the child can pass it to shheap_init() after fork().
+ *
+ * @returns g_sh_heap.
+ */
+void *shheap_get_head(void)
+{
+    return g_sh_heap;
+}
+
+/**
+ * Copies the heap into the child process.
+ *
+ * @returns 0 on success, -1 and errno on failure.
+ * @param   hChild      Handle to the child process.
+ */
+int shheap_fork_copy_to_child(void *hChild)
+{
+    shmemchunk *chunk;
+    shmtxtmp tmp;
+    int err = 0;
+
+    shmtx_enter(&g_sh_heap_mtx, &tmp);
+
+    for (chunk = g_sh_heap; chunk; chunk = chunk->next)
+    {
+        void *chld_chnk;
+
+        chld_chnk = (shmemchunk *)VirtualAllocEx(hChild, chunk, chunk->size,
+                                                 MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
+        if (chld_chnk != chunk)
+        {
+            err = GetLastError();
+            fprintf(stderr, "shfork: VirtualAllocEx(,%p,%p,) -> %p/%d\n", chunk, chunk->size, chld_chnk, err);
+            break;
+        }
+
+        if (!WriteProcessMemory(hChild, chunk, chunk, chunk->size, NULL /* pNumberOfBytesWritten */))
+        {
+            err = GetLastError();
+            fprintf(stderr, "shfork: WriteProcessMemory(,%p,,%p,) -> %d\n", chunk, chunk->size, err);
+            break;
+        }
+    }
+
+    shmtx_leave(&g_sh_heap_mtx, &tmp);
+
+    if (!err)
+        return 0;
+    errno = EINVAL;
+    return -1;
+}
+
+# endif /* K_OS == K_OS_WINDOWS */
+
+/**
+ * Checks a heap chunk.
+ * @param   chunk       The chunk to check.
+ */
+static void shheap_check_chunk(shmemchunk *chunk)
+{
+    size_t              free_count;
+    struct shmemhdr    *mem;
+    struct shmemhdr    *prev;
+
+    SHHEAP_ASSERT(chunk->magic == SHMEMCHUNK_MAGIC);
+    SHHEAP_ASSERT(chunk->head);
+    SHHEAP_ASSERT(chunk->size == SHHEAP_CHUNK_ALIGN(chunk->size));
+
+    free_count = 0;
+    prev = NULL;
+    for (mem = chunk->head; mem; mem = mem->next)
+    {
+        size_t size = (mem->next ? (char *)mem->next : (char *)chunk + chunk->size) - (char *)(mem + 1);
+        SHHEAP_ASSERT(mem->size == size);
+        SHHEAP_ASSERT(mem->prev == prev);
+        if (mem->magic == SHMEMHDR_MAGIC_FREE)
+            free_count++;
+        else
+            SHHEAP_ASSERT(mem->magic == SHMEMHDR_MAGIC_USED);
+        prev = mem;
+    }
+
+    prev = NULL;
+    for (mem = chunk->free_head; mem; mem = mem->next2)
+    {
+        size_t size = (mem->next ? (char *)mem->next : (char *)chunk + chunk->size) - (char *)(mem + 1);
+        SHHEAP_ASSERT(mem->size == size);
+        SHHEAP_ASSERT(mem->prev2 == prev);
+        SHHEAP_ASSERT(mem->magic == SHMEMHDR_MAGIC_FREE);
+        free_count--;
+        prev = mem;
+    }
+    SHHEAP_ASSERT(free_count == 0);
+}
+
+/**
+ * Checks the heap.
+ */
+static void shheap_check(void)
+{
+    shmemchunk *chunk;
+    for (chunk = g_sh_heap; chunk; chunk = chunk->next)
+        shheap_check_chunk(chunk);
+}
+
+/**
+ * Grows the heap with another chunk carving out a block
+ *
+ * @returns Pointer to a used entry of size @a size1. NULL
+ *          if we're out of memory
+ * @param   size1       The size of the block to be returned (aligned).
+ */
+static shmemhdr *shheap_grow(size_t size1)
+{
+    shmemchunk *chunk;
+    shmemhdr *used;
+    shmemhdr *avail;
+    size_t chunk_size;
+
+    /* Calc the chunk size and allocate it. */
+    chunk_size = SHHEAP_ALIGN(size1) + SHHEAP_ALIGN(sizeof(*chunk)) + SHHEAP_ALIGN(sizeof(*used)) * 10;
+    if (chunk_size < SHHEAP_MIN_CHUNK)
+        chunk_size = SHHEAP_MIN_CHUNK;
+    else
+        chunk_size = SHHEAP_CHUNK_ALIGN(chunk_size);
+
+# if K_OS == K_OS_WINDOWS
+    chunk = (shmemchunk *)VirtualAlloc(NULL, chunk_size, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
+# else
+    chunk = NULL;
+# endif
+
+    if (!chunk)
+        return NULL;
+
+    used = (shmemhdr *)((char *)chunk + SHHEAP_ALIGN(sizeof(*chunk)));
+    avail = (shmemhdr *)((char *)(used + 1) + size1);
+
+    used->magic = SHMEMHDR_MAGIC_USED;
+    used->size  = size1;
+    used->next  = avail;
+    used->prev  = NULL;
+    used->next2 = SHHEAP_POISON_NULL(0x41);
+    used->prev2 = SHHEAP_POISON_NULL(0x41);
+    used->psh   = NULL;
+    used->chunk = chunk;
+
+    avail->magic = SHMEMHDR_MAGIC_FREE;
+    avail->size  = (char *)chunk + chunk_size - (char *)(avail + 1);
+    avail->next  = NULL;
+    avail->prev  = used;
+    avail->next2 = NULL;
+    avail->prev2 = NULL;
+    avail->psh   = NULL;
+    avail->chunk = chunk;
+
+    chunk->head = used;
+    chunk->free_head = avail;
+    chunk->size = chunk_size;
+    chunk->magic = SHMEMCHUNK_MAGIC;
+    chunk->prev = NULL;
+    chunk->next = g_sh_heap;
+    if (g_sh_heap)
+        g_sh_heap->prev = chunk;
+    g_sh_heap = chunk;
+    chunk->padding0 = 0;
+    chunk->padding1 = 0;
+
+    SHHEAP_CHECK_2();
+    return used;
+}
+
+/***
+ * Splits a big memory block into two smaller, one with the
+ * size @a size1.
+ *
+ * The one with the given size is removed from the free list
+ * while the other one remains there.
+ *
+ * @returns The @a size1 sized block, NULL on failure.
+ * @param   big         The block that is too big.
+ * @param   size1       The size of the block to be returned (aligned).
+ */
+static shmemhdr *shheap_split(shmemhdr *big, size_t size1)
+{
+    shmemhdr *split;
+    SHHEAP_ASSERT(SHHEAP_ALIGN(sizeof(*big)) == sizeof(*big));
+    SHHEAP_ASSERT(big->magic == SHMEMHDR_MAGIC_FREE);
+    SHHEAP_ASSERT(!big->next2 || big->next2->magic  == SHMEMHDR_MAGIC_FREE);
+    SHHEAP_ASSERT(!big->prev2 || big->prev2->magic  == SHMEMHDR_MAGIC_FREE);
+
+    split = (shmemhdr *)((uint8_t *)(big + 1) + size1);
+    split->magic = SHMEMHDR_MAGIC_FREE;
+    split->size  = big->size - size1 - sizeof(*split);
+    split->next  = big->next;
+    split->prev  = big;
+    split->next2 = big->next2;
+    split->prev2 = big->prev2;
+    split->psh   = SHHEAP_POISON_NULL(0x54);
+    split->chunk = big->chunk;
+
+    if (big->next2)
+        big->next2->prev2 = split;
+    if (big->prev2)
+        big->prev2->next2 = split;
+    else
+        big->chunk->free_head = split;
+
+    big->magic = SHMEMHDR_MAGIC_USED;
+    big->next2 = big->prev2 = SHHEAP_POISON_NULL(0x41);
+
+    if (big->next)
+        big->next->prev = split;
+    big->next = split;
+    big->size = size1;
+
+    SHHEAP_CHECK_2();
+    return big;
+}
+
+/***
+ * Unlinks a free memory block.
+ * @param   mem     The block to unlink.
+ */
+static void shheap_unlink_free(shmemhdr *mem)
+{
+    if (mem->next2)
+        mem->next2->prev2 = mem->prev2;
+    if (mem->prev2)
+        mem->prev2->next2 = mem->next2;
+    else
+        mem->chunk->free_head = mem->next2;
+    mem->magic = SHMEMHDR_MAGIC_USED;
+    mem->next2 = mem->prev2 = SHHEAP_POISON_NULL(0x42);
+}
+
+#endif /* SHHEAP_IN_USE */
+
+
+/** free() */
+void sh_free(shinstance *psh, void *ptr)
+{
+#ifdef SHHEAP_IN_USE
+    shmemhdr *mem;
+    shmemhdr *right;
+    shmemhdr *left;
+    shmtxtmp tmp;
+
+    if (ptr)
+        mem = (shmemhdr *)ptr - 1;
+    else
+        return;
+
+    if (mem->magic != SHMEMHDR_MAGIC_USED)
+    {
+        SHHEAP_ASSERT(0);
+        return;
+    }
+
+    shmtx_enter(&g_sh_heap_mtx, &tmp);
+    SHHEAP_CHECK();
+
+    /* join right. */
+    right = mem->next;
+    if (    right
+        &&  right->magic == SHMEMHDR_MAGIC_FREE)
+    {
+        mem->next = right->next;
+        if (right->next)
+            right->next->prev = mem;
+
+        mem->next2 = right->next2;
+        if (right->next2)
+            right->next2->prev2 = mem;
+        mem->prev2 = right->prev2;
+        if (right->prev2)
+            mem->prev2->next2 = mem;
+        else
+            mem->chunk->free_head = mem;
+
+        mem->size += sizeof(*right) + right->size;
+        mem->magic = SHMEMHDR_MAGIC_FREE;
+        right->magic = ~SHMEMHDR_MAGIC_FREE;
+        mem->psh = SHHEAP_POISON_NULL(0x50);
+        SHHEAP_CHECK_2();
+    }
+
+    /* join left */
+    left = mem->prev;
+    if (    left
+        &&  left->magic == SHMEMHDR_MAGIC_FREE)
+    {
+        left->next = mem->next;
+        if (mem->next)
+            mem->next->prev = left;
+
+        if (mem->magic == SHMEMHDR_MAGIC_FREE)
+        {
+            if (mem->next2)
+                mem->next2->prev2 = mem->prev2;
+            if (mem->prev2)
+                mem->prev2->next2 = mem->next2;
+            else
+                mem->chunk->free_head = mem->next2;
+        }
+
+        left->size += sizeof(*mem) + mem->size;
+        mem->magic = ~SHMEMHDR_MAGIC_USED;
+        left->psh = SHHEAP_POISON_NULL(0x51);
+    }
+
+    /* insert as free if necessary */
+    else if (mem->magic == SHMEMHDR_MAGIC_USED)
+    {
+        mem->prev2 = NULL;
+        mem->next2 = mem->chunk->free_head;
+        if (mem->chunk->free_head)
+            mem->chunk->free_head->prev2 = mem;
+        mem->chunk->free_head = mem;
+        mem->magic = SHMEMHDR_MAGIC_FREE;
+        mem->psh = SHHEAP_POISON_NULL(0x52);
+    }
+
+    SHHEAP_CHECK();
+    shmtx_leave(&g_sh_heap_mtx, &tmp);
+#else
+    if (ptr)
+        free(ptr);
+    (void)psh;
+#endif
+}
+
+/** malloc() */
+void *sh_malloc(shinstance *psh, size_t size)
+{
+#ifdef SHHEAP_IN_USE
+    shmemchunk *chunk;
+    shmemhdr *mem;
+    shmtxtmp tmp;
+
+    size = SHHEAP_ALIGN(size);
+    SHHEAP_ASSERT(size);
+    if (!size)
+        size = SHHEAP_ALIGN(1);
+
+    shmtx_enter(&g_sh_heap_mtx, &tmp);
+    SHHEAP_CHECK();
+
+
+    /* Search for fitting block */
+    mem = NULL;
+    chunk = g_sh_heap;
+    while (chunk)
+    {
+        mem = chunk->free_head;
+        while (mem && mem->size < size)
+            mem = mem->next2;
+        if (mem)
+            break;
+        chunk = chunk->next;
+    }
+    if (mem)
+    {
+        /* split it, or just unlink it? */
+        if (mem->size - size > sizeof(*mem) * 2)
+            mem = shheap_split(mem, size);
+        else
+            shheap_unlink_free(mem);
+    }
+    else
+    {
+        /* no block found, try grow the heap. */
+        mem = shheap_grow(size);
+        if (!mem)
+        {
+            shmtx_leave(&g_sh_heap_mtx, &tmp);
+            return NULL;
+        }
+    }
+
+    SHHEAP_CHECK();
+    shmtx_leave(&g_sh_heap_mtx, &tmp);
+
+    mem->psh = SHHEAP_POISON_PSH(psh, 0x53);
+
+    return mem + 1;
+
+#else
+    (void)psh;
+    return malloc(size);
+#endif
+}
+
+/** calloc() */
+void *sh_calloc(shinstance *psh, size_t num, size_t item_size)
+{
+#ifdef SHHEAP_IN_USE
+    size_t size = num * item_size;
+    void *pv = sh_malloc(psh, size);
+    if (pv)
+        pv = memset(pv, '\0', size);
+    return pv;
+#else
+    (void)psh;
+    return calloc(num, item_size);
+#endif
+}
+
+/** realloc() */
+void *sh_realloc(shinstance *psh, void *old, size_t new_size)
+{
+#ifdef SHHEAP_IN_USE
+    void *pv;
+    if (new_size)
+    {
+        if (old)
+        {
+            shmemhdr *hdr = (shmemhdr *)old - 1;
+            if (hdr->size < new_size)
+            {
+                pv = sh_malloc(psh, new_size);
+                if (pv)
+                {
+                    memcpy(pv, old, hdr->size);
+                    sh_free(psh, old);
+                }
+            }
+            else
+                pv = old;
+        }
+        else
+            pv = sh_malloc(psh, new_size);
+    }
+    else
+    {
+        sh_free(psh, old);
+        pv = NULL;
+    }
+    return pv;
+#else
+    return realloc(old, new_size);
+#endif
+}
+
+/** strdup() */
+char *sh_strdup(shinstance *psh, const char *string)
+{
+    size_t len = strlen(string);
+    char *ret = sh_malloc(psh, len + 1);
+    if (ret)
+        memcpy(ret, string, len + 1);
+    return ret;
+}
+
+
diff --git a/src/kash/shheap.h b/src/kash/shheap.h
new file mode 100644
index 0000000..06d5343
--- /dev/null
+++ b/src/kash/shheap.h
@@ -0,0 +1,45 @@
+/* $Id: shheap.h 2416 2010-09-14 00:30:30Z bird $ */
+/** @file
+ * The shell memory heap methods.
+ */
+
+/*
+ * Copyright (c) 2009-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef ___shheap_h
+#define ___shheap_h
+
+#include "shtypes.h"
+
+/* heap */
+int shheap_init(void *phead);
+void *shheap_get_head(void);
+int shheap_fork_copy_to_child(void *);
+
+void *sh_malloc(shinstance *, size_t);
+void *sh_calloc(shinstance *, size_t, size_t);
+void *sh_realloc(shinstance *, void *, size_t);
+char *sh_strdup(shinstance *, const char *);
+void  sh_free(shinstance *, void *);
+
+#endif
+
diff --git a/src/kash/shinstance.c b/src/kash/shinstance.c
new file mode 100644
index 0000000..868a3c3
--- /dev/null
+++ b/src/kash/shinstance.c
@@ -0,0 +1,2389 @@
+/* $Id: shinstance.c 3570 2022-07-09 14:42:02Z bird $ */
+/** @file
+ * The shell instance methods.
+ */
+
+/*
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <string.h>
+#include <stdlib.h>
+#ifdef _MSC_VER
+# include <process.h>
+#else
+# include <unistd.h>
+# include <pwd.h>
+#endif
+#include "shinstance.h"
+
+#include "alias.h"
+#include "error.h"
+#include "input.h"
+#include "jobs.h"
+#include "memalloc.h"
+#include "nodes.h"
+#include "redir.h"
+#include "shell.h"
+#include "trap.h"
+
+#if K_OS == K_OS_WINDOWS
+# include <Windows.h>
+# include "nt/nt_child_inject_standard_handles.h"
+# ifdef SH_FORKED_MODE
+extern pid_t shfork_do(shinstance *psh); /* shforkA-win.asm */
+# endif
+#endif
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+#ifndef SH_FORKED_MODE
+/** Used by sh__exit/sh_thread_wrapper for passing zero via longjmp.  */
+# define SH_EXIT_ZERO    0x0d15ea5e
+#endif
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+#ifndef SH_FORKED_MODE
+/** Mutex serializing exec/spawn to prevent unwanted file inherting. */
+shmtx               g_sh_exec_inherit_mtx;
+/** Mutex protecting g_sh_sts_free. */
+static shmtx        g_sh_sts_mtx;
+/** List of free subshell status structure (saves CreateEvent calls).  */
+static shsubshellstatus * volatile g_sh_sts_free = NULL;
+#endif
+/** The mutex protecting the the globals and some shell instance members (sigs). */
+static shmtx        g_sh_mtx;
+/** The root shell instance. */
+static shinstance  *g_sh_root;
+/** The first shell instance. */
+static shinstance  *g_sh_head;
+/** The last shell instance. */
+static shinstance  *g_sh_tail;
+/** The number of shells. */
+static int volatile g_num_shells;
+/* Statistics: Number of subshells spawned. */
+static KU64             g_stat_subshells = 0;
+/* Statistics: Number of program exec'ed. */
+static KU64 volatile    g_stat_execs = 0;
+#if K_OS == K_OS_WINDOWS
+/* Statistics: Number of serialized exec calls. */
+static KU64 volatile    g_stat_execs_serialized = 0;
+#endif
+/** Per signal state for determining a common denominator.
+ * @remarks defaults and unmasked actions aren't counted. */
+struct shsigstate
+{
+    /** The current signal action. */
+#ifndef _MSC_VER
+    struct sigaction sa;
+#else
+    struct
+    {
+        void      (*sa_handler)(int);
+        int         sa_flags;
+        shsigset_t  sa_mask;
+    } sa;
+#endif
+    /** The number of restarts (siginterrupt / SA_RESTART). */
+    int num_restart;
+    /** The number of ignore handlers. */
+    int num_ignore;
+    /** The number of specific handlers. */
+    int num_specific;
+    /** The number of threads masking it. */
+    int num_masked;
+}                   g_sig_state[NSIG];
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+#ifndef SH_FORKED_MODE
+static void shsubshellstatus_signal_and_release(shinstance *psh, int iExit);
+#endif
+
+
+
+int shmtx_init(shmtx *pmtx)
+{
+#if K_OS == K_OS_WINDOWS
+    typedef int mtxsizecheck[sizeof(CRITICAL_SECTION) + sizeof(KU64) <= sizeof(*pmtx) ? 2 : 0];
+    InitializeCriticalSection((CRITICAL_SECTION *)pmtx);
+#else
+    pmtx->b[0] = 0;
+#endif
+    pmtx->au64[SHMTX_MAGIC_IDX] = SHMTX_MAGIC;
+    return 0;
+}
+
+/**
+ * Safe to call more than once.
+ */
+void shmtx_delete(shmtx *pmtx)
+{
+    if (pmtx->au64[SHMTX_MAGIC_IDX] != SHMTX_MAGIC)
+    {
+#if K_OS == K_OS_WINDOWS
+        DeleteCriticalSection((CRITICAL_SECTION *)pmtx);
+#else
+        pmtx->b[0] = 0;
+#endif
+        pmtx->au64[SHMTX_MAGIC_IDX] = ~SHMTX_MAGIC;
+    }
+}
+
+void shmtx_enter(shmtx *pmtx, shmtxtmp *ptmp)
+{
+#if K_OS == K_OS_WINDOWS
+    EnterCriticalSection((CRITICAL_SECTION *)pmtx);
+    ptmp->i = 0x42;
+#else
+    pmtx->b[0] = 0;
+    ptmp->i = 0;
+#endif
+}
+
+void shmtx_leave(shmtx *pmtx, shmtxtmp *ptmp)
+{
+#if K_OS == K_OS_WINDOWS
+    kHlpAssert(ptmp->i == 0x42);
+    LeaveCriticalSection((CRITICAL_SECTION *)pmtx);
+    ptmp->i = 0x21;
+#else
+    pmtx->b[0] = 0;
+    ptmp->i = 432;
+#endif
+}
+
+/**
+ * Initialize globals in shinstance.c.
+ *
+ * Called when creating the rootshell and on windows after forking.
+ */
+void sh_init_globals(void)
+{
+    kHlpAssert(g_sh_mtx.au64[SHMTX_MAGIC_IDX] != SHMTX_MAGIC);
+    shmtx_init(&g_sh_mtx);
+#ifndef SH_FORKED_MODE
+    shmtx_init(&g_sh_exec_inherit_mtx);
+    shmtx_init(&g_sh_sts_mtx);
+#endif
+}
+
+
+/**
+ * Links the shell instance.
+ *
+ * @param   psh     The shell.
+ */
+static void sh_int_link(shinstance *psh)
+{
+    shmtxtmp tmp;
+    shmtx_enter(&g_sh_mtx, &tmp);
+
+    if (psh->rootshell)
+        g_sh_root = psh;
+    else
+        g_stat_subshells++;
+
+    psh->next = NULL;
+    psh->prev = g_sh_tail;
+    if (g_sh_tail)
+        g_sh_tail->next = psh;
+    else
+        g_sh_tail = g_sh_head = psh;
+    g_sh_tail = psh;
+
+    g_num_shells++;
+
+    psh->linked = 1;
+
+    shmtx_leave(&g_sh_mtx, &tmp);
+}
+
+/**
+ * Unlink the shell instance.
+ *
+ * @param   psh     The shell.
+ */
+static void sh_int_unlink(shinstance *psh)
+{
+    if (psh->linked)
+    {
+        shinstance *pshcur;
+        shmtxtmp tmp;
+        shmtx_enter(&g_sh_mtx, &tmp);
+
+        g_num_shells--;
+
+        if (g_sh_tail == psh)
+            g_sh_tail = psh->prev;
+        else
+            psh->next->prev = psh->prev;
+
+        if (g_sh_head == psh)
+            g_sh_head = psh->next;
+        else
+            psh->prev->next = psh->next;
+
+        if (g_sh_root == psh)
+            g_sh_root = NULL;
+
+        /* Orphan children: */
+        for (pshcur = g_sh_head; pshcur; pshcur = pshcur->next)
+            if (pshcur->parent == psh)
+                pshcur->parent = NULL;
+
+        shmtx_leave(&g_sh_mtx, &tmp);
+    }
+}
+
+/**
+ * Frees a string vector like environ or argv.
+ *
+ * @param   psh     The shell to associate the deallocations with.
+ * @param   vecp    Pointer to the vector pointer.
+ */
+static void sh_free_string_vector(shinstance *psh, char ***vecp)
+{
+    char **vec = *vecp;
+    if (vec)
+    {
+        char *str;
+        size_t i = 0;
+        while ((str = vec[i]) != NULL)
+        {
+            sh_free(psh, str);
+            vec[i] = NULL;
+            i++;
+        }
+
+        sh_free(psh, vec);
+        *vecp = NULL;
+    }
+}
+
+
+/**
+ * Destroys the shell instance.
+ *
+ * This will work on partially initialized instances (because I'm lazy).
+ *
+ * @param   psh     The shell instance to be destroyed.
+ * @note    invalidate thread arguments.
+ */
+static void sh_destroy(shinstance *psh)
+{
+    unsigned left, i;
+
+    INTOFF;
+
+    sh_int_unlink(psh);
+
+    /* shinstance stuff: */
+    shfile_uninit(&psh->fdtab, psh->tracefd);
+    sh_free_string_vector(psh, &psh->shenviron);
+    sh_free(psh, psh->children);
+    psh->children = NULL;
+#ifndef SH_FORKED_MODE
+    /** @todo children. */
+    sh_free(psh, psh->threadarg);
+    psh->threadarg = NULL;
+    kHlpAssert(!psh->subshellstatus);
+    if (psh->subshellstatus)
+    {
+        shsubshellstatus_signal_and_release(psh, psh->exitstatus);
+        psh->subshellstatus = NULL;
+    }
+#endif
+
+    /* alias.c */
+    left = psh->aliases;
+    if (left > 0)
+        for (i = 0; i < K_ELEMENTS(psh->atab); i++)
+        {
+            struct alias *cur = psh->atab[i];
+            if (cur)
+            {
+                do
+                {
+                    struct alias *next = cur->next;
+                    sh_free(psh, cur->val);
+                    sh_free(psh, cur->name);
+                    sh_free(psh, cur);
+                    cur = next;
+                    left--;
+                } while (cur);
+                psh->atab[i] = NULL;
+                if (!left)
+                    break;
+            }
+        }
+
+    /* cd.c */
+    sh_free(psh, psh->curdir);
+    psh->curdir = NULL;
+    sh_free(psh, psh->prevdir);
+    psh->prevdir = NULL;
+    psh->cdcomppath = NULL; /* stalloc */
+
+    /* eval.h */
+    if (psh->commandnamemalloc)
+        sh_free(psh, psh->commandname);
+    psh->commandname = NULL;
+    psh->cmdenviron = NULL;
+
+    /* expand.c */
+    if (psh->ifsfirst.next)
+    {
+        struct ifsregion *ifsrgn = psh->ifsfirst.next;
+        psh->ifsfirst.next = NULL;
+        do
+        {
+            struct ifsregion *next = ifsrgn->next;
+            sh_free(psh, ifsrgn);
+            ifsrgn = next;
+        } while (ifsrgn);
+    }
+    psh->ifslastp = NULL;
+    sh_free(psh, psh->expdir);
+    psh->expdir = NULL;
+
+    /* exec.h/exec.c */
+    psh->pathopt = NULL;
+    for (i = 0; i < CMDTABLESIZE; i++)
+    {
+        struct tblentry *cur = psh->cmdtable[i];
+        if (cur)
+        {
+            do
+            {
+                struct tblentry *next = cur->next;
+                if (cur->cmdtype == CMDFUNCTION)
+                {
+                    freefunc(psh, cur->param.func);
+                    cur->param.func = NULL;
+                }
+                sh_free(psh, cur);
+                cur = next;
+            } while (cur);
+            psh->cmdtable[i] = NULL;
+        }
+    }
+
+    /* input.h/c */
+    if (psh->parsefile != NULL)
+    {
+        popallfiles(psh);
+        while (psh->basepf.strpush)
+            popstring(psh);
+    }
+
+    /* jobs.h/c */
+    if (psh->jobtab)
+    {
+        int j = psh->njobs;
+        while (j-- > 0)
+            if (psh->jobtab[j].used && psh->jobtab[j].ps != &psh->jobtab[j].ps0)
+            {
+                sh_free(psh, psh->jobtab[j].ps);
+                psh->jobtab[j].ps = &psh->jobtab[j].ps0;
+            }
+        sh_free(psh, psh->jobtab);
+        psh->jobtab = NULL;
+        psh->njobs = 0;
+    }
+
+    /* myhistedit.h */
+#ifndef SMALL
+# error FIXME
+    History            *hist;
+    EditLine           *el;
+#endif
+
+    /* output.h */
+    if (psh->output.buf != NULL)
+    {
+        ckfree(psh, psh->output.buf);
+        psh->output.buf = NULL;
+    }
+    if (psh->errout.buf != NULL)
+    {
+        ckfree(psh, psh->errout.buf);
+        psh->errout.buf = NULL;
+    }
+    if (psh->memout.buf != NULL)
+    {
+        ckfree(psh, psh->memout.buf);
+        psh->memout.buf = NULL;
+    }
+
+    /* options.h */
+    if (psh->arg0malloc)
+    {
+        sh_free(psh, psh->arg0);
+        psh->arg0 = NULL;
+    }
+    if (psh->shellparam.malloc)
+        sh_free_string_vector(psh, &psh->shellparam.p);
+    sh_free_string_vector(psh, &psh->orgargv);
+    psh->argptr = NULL;
+    psh->minusc = NULL;
+
+    /* redir.c */
+    if (psh->redirlist)
+    {
+        struct redirtab *redir = psh->redirlist;
+        psh->redirlist = NULL;
+        do
+        {
+            struct redirtab *next = redir->next;
+            sh_free(psh, redir);
+            redir = next;
+        } while (redir);
+    }
+    psh->expfnames = NULL; /* stack alloc */
+
+    /* trap.c */
+    for (i = 0; i < K_ELEMENTS(psh->trap); i++)
+        if (!psh->trap[i])
+        { /* likely */ }
+        else
+        {
+            sh_free(psh, psh->trap[i]);
+            psh->trap[i] = NULL;
+        }
+
+    /* var.h */
+    if (psh->localvars)
+    {
+        struct localvar *lvar = psh->localvars;
+        psh->localvars = NULL;
+        do
+        {
+            struct localvar *next = lvar->next;
+            if (!(lvar->flags & VTEXTFIXED))
+                sh_free(psh, lvar->text);
+            sh_free(psh, lvar);
+            lvar = next;
+        } while (lvar);
+    }
+
+    for (i = 0; i < K_ELEMENTS(psh->vartab); i++)
+    {
+        struct var *var = psh->vartab[i];
+        if (!var)
+        { /* likely */ }
+        else
+        {
+            psh->vartab[i] = NULL;
+            do
+            {
+                struct var *next = var->next;
+                if (!(var->flags & (VTEXTFIXED | VSTACK)))
+                    sh_free(psh, var->text);
+                if (!(var->flags & (VSTRFIXED | VSTRFIXED2)))
+                    sh_free(psh, var);
+                var = next;
+            } while (var);
+        }
+    }
+
+    /*
+     * memalloc.c: Make sure we've gotten rid of all the stack memory.
+     */
+    if (psh->stackp != &psh->stackbase && psh->stackp)
+    {
+        struct stack_block *stackp = psh->stackp;
+        do
+        {
+            psh->stackp = stackp->prev;
+            sh_free(psh, stackp);
+        } while ((stackp = psh->stackp) != &psh->stackbase && stackp);
+    }
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR //bp msvcr100!_wassert
+    if (psh->pstack)
+    {
+        if (psh->pstacksize > 0)
+            pstackpop(psh, 0);
+        sh_free(psh, psh->pstack);
+        psh->pstack = NULL;
+    }
+    sh_free(psh, psh->freepstack);
+    psh->freepstack = NULL;
+#endif
+    psh->markp = NULL;
+
+    /*
+     * Finally get rid of tracefd and then free the shell:
+     */
+    shfile_uninit(&psh->fdtab, -1);
+
+    memset(psh, 0, sizeof(*psh));
+    sh_free(NULL, psh);
+}
+
+/**
+ * Clones a string vector like environ or argv.
+ *
+ * @returns 0 on success, -1 and errno on failure.
+ * @param   psh     The shell to associate the allocations with.
+ * @param   dstp    Where to store the clone.
+ * @param   src     The vector to be cloned.
+ */
+static int sh_clone_string_vector(shinstance *psh, char ***dstp, char **src)
+{
+    char **dst;
+    size_t items;
+
+    /* count first */
+    items = 0;
+    while (src[items])
+        items++;
+
+    /* alloc clone array. */
+    *dstp = dst = sh_malloc(psh, sizeof(*dst) * (items + 1));
+    if (!dst)
+        return -1;
+
+    /* copy the items */
+    dst[items] = NULL;
+    while (items-- > 0)
+    {
+        dst[items] = sh_strdup(psh, src[items]);
+        if (!dst[items])
+        {
+            /* allocation error, clean up. */
+            while (dst[++items])
+                sh_free(psh, dst[items]);
+            sh_free(psh, dst);
+            errno = ENOMEM;
+            return -1;
+        }
+    }
+
+    return 0;
+}
+
+/**
+ * Creates a shell instance, caller must link it.
+ *
+ * @param   inherit     The shell to inherit from, or NULL if root.
+ * @param   argv        The argument vector.
+ * @param   envp        The environment vector.
+ * @param   parentfdtab File table to inherit from, NULL if root.
+ *
+ * @returns pointer to root shell on success, NULL on failure.
+ */
+static shinstance *sh_create_shell_common(char **argv, char **envp, shfdtab *parentfdtab)
+{
+    shinstance *psh;
+
+    /*
+     * The allocations.
+     */
+    psh = sh_calloc(NULL, sizeof(*psh), 1);
+    if (psh)
+    {
+        /* Init it enough for sh_destroy() to not get upset: */
+        /* ... */
+
+        /* Call the basic initializers. */
+        if (    !sh_clone_string_vector(psh, &psh->shenviron, envp)
+            &&  !sh_clone_string_vector(psh, &psh->orgargv, argv)
+            &&  !shfile_init(&psh->fdtab, parentfdtab))
+        {
+            unsigned i;
+
+            /*
+             * The special stuff.
+             */
+#ifdef _MSC_VER
+            psh->pgid = psh->pid = _getpid();
+#else
+            psh->pid = getpid();
+            psh->pgid = getpgid(0);
+#endif
+
+            /*sh_sigemptyset(&psh->sigrestartset);*/
+            for (i = 0; i < K_ELEMENTS(psh->sigactions); i++)
+                psh->sigactions[i].sh_handler = SH_SIG_UNK;
+#if defined(_MSC_VER)
+            sh_sigemptyset(&psh->sigmask);
+#else
+            sigprocmask(SIG_SETMASK, NULL, &psh->sigmask);
+#endif
+
+            /*
+             * State initialization.
+             */
+            /* cd.c */
+            psh->getpwd_first = 1;
+
+            /* exec */
+            psh->builtinloc = -1;
+
+            /* memalloc.c */
+            psh->stacknleft = MINSIZE;
+            psh->herefd = -1;
+            psh->stackp = &psh->stackbase;
+            psh->stacknxt = psh->stackbase.space;
+
+            /* input.c */
+            psh->plinno = 1;
+            psh->init_editline = 0;
+            psh->parsefile = &psh->basepf;
+
+            /* output.c */
+            psh->output.bufsize = OUTBUFSIZ;
+            psh->output.fd = 1;
+            psh->output.psh = psh;
+            psh->errout.bufsize = 100;
+            psh->errout.fd = 2;
+            psh->errout.psh = psh;
+            psh->memout.fd = MEM_OUT;
+            psh->memout.psh = psh;
+            psh->out1 = &psh->output;
+            psh->out2 = &psh->errout;
+
+            /* jobs.c */
+            psh->backgndpid = -1;
+#if JOBS
+            psh->curjob = -1;
+#else
+# error asdf
+#endif
+            psh->ttyfd = -1;
+
+            /* show.c */
+            psh->tracefd = -1;
+            return psh;
+        }
+
+        sh_destroy(psh);
+    }
+    return NULL;
+}
+
+/**
+ * Creates the root shell instance.
+ *
+ * @param   argv        The argument vector.
+ * @param   envp        The environment vector.
+ *
+ * @returns pointer to root shell on success, NULL on failure.
+ */
+shinstance *sh_create_root_shell(char **argv, char **envp)
+{
+    shinstance *psh;
+
+    sh_init_globals();
+
+    psh = sh_create_shell_common(argv, envp, NULL /*parentfdtab*/);
+    if (psh)
+    {
+        sh_int_link(psh);
+        return psh;
+    }
+    return NULL;
+}
+
+#ifndef SH_FORKED_MODE
+
+/**
+ * Does the inherting from the parent shell instance.
+ */
+static void sh_inherit_from_parent(shinstance *psh, shinstance *inherit)
+{
+    /*
+     * Make sure we can use TRACE/TRACE2 for logging here.
+     */
+#ifdef DEBUG
+    /* show.c */
+    psh->tracefd = inherit->tracefd;
+    /* options.c */
+    debug(psh) = debug(inherit);
+#endif
+
+    /*
+     * Do the rest of the inheriting.
+     */
+    psh->parent = inherit;
+    psh->pgid = inherit->pgid;
+
+    psh->sigmask = psh->sigmask;
+    /** @todo sigactions?   */
+    /// @todo suppressint?
+
+    /* alises: */
+    subshellinitalias(psh, inherit);
+
+    /* cd.c */
+    psh->getpwd_first = inherit->getpwd_first;
+    if (inherit->curdir)
+        psh->curdir = savestr(psh, inherit->curdir);
+    if (inherit->prevdir)
+        psh->prevdir = savestr(psh, inherit->prevdir);
+
+    /* eval.h */
+    /* psh->commandname - see subshellinitoptions */
+    psh->exitstatus  = inherit->exitstatus;          /// @todo ??
+    psh->back_exitstatus = inherit->back_exitstatus; /// @todo ??
+    psh->funcnest = inherit->funcnest;
+    psh->evalskip = inherit->evalskip;               /// @todo ??
+    psh->skipcount = inherit->skipcount;             /// @todo ??
+
+    /* exec.c */
+    subshellinitexec(psh, inherit);
+
+    /* input.h/input.c - only for the parser and anyway forkchild calls closescript(). */
+
+    /* jobs.h - should backgndpid be -1 in subshells? */
+
+    /* jobs.c -    */
+    psh->jobctl = inherit->jobctl;  /// @todo ??
+    psh->initialpgrp = inherit->initialpgrp;
+    psh->ttyfd = inherit->ttyfd;
+    /** @todo copy jobtab so the 'jobs' command can be run in a subshell.
+     *  Better, make it follow the parent chain and skip the copying.  Will
+     *  require some kind of job locking. */
+
+    /* mail.c - nothing (for now at least) */
+
+    /* main.h */
+    psh->rootpid = inherit->rootpid;
+    psh->psh_rootshell = inherit->psh_rootshell;
+
+    /* memalloc.h / memalloc.c - nothing. */
+
+    /* myhistedit.h  */ /** @todo copy history? Do we need to care? */
+
+    /* output.h */ /** @todo not sure this is possible/relevant for subshells */
+    psh->output.fd = inherit->output.fd;
+    psh->errout.fd = inherit->errout.fd;
+    if (inherit->out1 == &inherit->memout)
+        psh->out1 = &psh->memout;
+    if (inherit->out2 == &inherit->memout)
+        psh->out2 = &psh->memout;
+
+    /* options.h */
+    subshellinitoptions(psh, inherit);
+
+    /* parse.h/parse.c */
+    psh->whichprompt = inherit->whichprompt;
+    /* tokpushback, doprompt and needprompt shouldn't really matter, parsecmd resets thems. */
+    /* The rest are internal to the parser, as I see them, and can be ignored. */
+
+    /* redir.c */
+    subshellinitredir(psh, inherit);
+
+    /* trap.h / trap.c */ /** @todo we don't carry pendingsigs to the subshell, right? */
+    subshellinittrap(psh, inherit);
+
+    /* var.h */
+    subshellinitvar(psh, inherit);
+}
+
+/**
+ * Creates a child shell instance.
+ *
+ * @param   inherit     The shell to inherit from.
+ *
+ * @returns pointer to root shell on success, NULL on failure.
+ */
+shinstance *sh_create_child_shell(shinstance *inherit)
+{
+    shinstance *psh = sh_create_shell_common(inherit->orgargv, inherit->shenviron, &inherit->fdtab);
+    if (psh)
+    {
+        /* Fake a pid for the child: */
+        static unsigned volatile s_cShells = 0;
+        int const iSubShell = ++s_cShells;
+        psh->pid = SHPID_MAKE(SHPID_GET_PID(inherit->pid), iSubShell);
+
+        sh_inherit_from_parent(psh, inherit);
+
+        /* link it */
+        sh_int_link(psh);
+        return psh;
+    }
+    return NULL;
+}
+
+#endif /* !SH_FORKED_MODE */
+
+/** getenv() */
+char *sh_getenv(shinstance *psh, const char *var)
+{
+    size_t  len;
+    int     i = 0;
+
+    if (!var)
+        return NULL;
+
+    len = strlen(var);
+    i = 0;
+    while (psh->shenviron[i])
+    {
+        const char *item = psh->shenviron[i];
+        if (    !strncmp(item, var, len)
+            &&  item[len] == '=')
+            return (char *)item + len + 1;
+        i++;
+    }
+
+    return NULL;
+}
+
+char **sh_environ(shinstance *psh)
+{
+    return psh->shenviron;
+}
+
+const char *sh_gethomedir(shinstance *psh, const char *user)
+{
+    const char *ret = NULL;
+
+#ifdef _MSC_VER
+    ret = sh_getenv(psh, "HOME");
+    if (!ret)
+        ret = sh_getenv(psh, "USERPROFILE");
+#else
+    struct passwd *pwd = getpwnam(user); /** @todo use getpwdnam_r */
+    (void)psh;
+    ret = pwd ? pwd->pw_dir : NULL;
+#endif
+
+    return ret;
+}
+
+/**
+ * Lazy initialization of a signal state, globally.
+ *
+ * @param   psh         The shell doing the lazy work.
+ * @param   signo       The signal (valid).
+ */
+static void sh_int_lazy_init_sigaction(shinstance *psh, int signo)
+{
+    if (psh->sigactions[signo].sh_handler == SH_SIG_UNK)
+    {
+        shmtxtmp tmp;
+        shmtx_enter(&g_sh_mtx, &tmp);
+
+        if (psh->sigactions[signo].sh_handler == SH_SIG_UNK)
+        {
+            shsigaction_t shold;
+            shinstance *cur;
+#ifndef _MSC_VER
+            struct sigaction old;
+            if (!sigaction(signo, NULL, &old))
+            {
+                /* convert */
+                shold.sh_flags = old.sa_flags;
+                shold.sh_mask = old.sa_mask;
+                if (old.sa_handler == SIG_DFL)
+                    shold.sh_handler = SH_SIG_DFL;
+                else
+                {
+                    kHlpAssert(old.sa_handler == SIG_IGN);
+                    shold.sh_handler = SH_SIG_IGN;
+                }
+            }
+            else
+#endif
+            {
+                /* fake */
+#ifndef _MSC_VER
+                kHlpAssert(0);
+                old.sa_handler = SIG_DFL;
+                old.sa_flags = 0;
+                sigemptyset(&shold.sh_mask);
+                sigaddset(&shold.sh_mask, signo);
+#endif
+                shold.sh_flags = 0;
+                sh_sigemptyset(&shold.sh_mask);
+                sh_sigaddset(&shold.sh_mask, signo);
+                shold.sh_handler = SH_SIG_DFL;
+            }
+
+            /* update globals */
+#ifndef _MSC_VER
+            g_sig_state[signo].sa = old;
+#else
+            g_sig_state[signo].sa.sa_handler = SIG_DFL;
+            g_sig_state[signo].sa.sa_flags = 0;
+            g_sig_state[signo].sa.sa_mask = shold.sh_mask;
+#endif
+            TRACE2((psh, "sh_int_lazy_init_sigaction: signo=%d:%s sa_handler=%p sa_flags=%#x\n",
+                    signo, sys_signame[signo], g_sig_state[signo].sa.sa_handler, g_sig_state[signo].sa.sa_flags));
+
+            /* update all shells */
+            for (cur = g_sh_head; cur; cur = cur->next)
+            {
+                kHlpAssert(cur->sigactions[signo].sh_handler == SH_SIG_UNK);
+                cur->sigactions[signo] = shold;
+            }
+        }
+
+        shmtx_leave(&g_sh_mtx, &tmp);
+    }
+}
+
+/**
+ * Perform the default signal action on the shell.
+ *
+ * @param   psh         The shell instance.
+ * @param   signo       The signal.
+ */
+static void sh_sig_do_default(shinstance *psh, int signo)
+{
+    /** @todo */
+}
+
+/**
+ * Deliver a signal to a shell.
+ *
+ * @param   psh         The shell instance.
+ * @param   pshDst      The shell instance to signal.
+ * @param   signo       The signal.
+ * @param   locked      Whether we're owning the lock or not.
+ */
+static void sh_sig_do_signal(shinstance *psh, shinstance *pshDst, int signo, int locked)
+{
+    shsig_t pfn = pshDst->sigactions[signo].sh_handler;
+    if (pfn == SH_SIG_UNK)
+    {
+        sh_int_lazy_init_sigaction(pshDst, signo);
+        pfn = pshDst->sigactions[signo].sh_handler;
+    }
+
+    if (pfn == SH_SIG_DFL)
+        sh_sig_do_default(pshDst, signo);
+    else if (pfn == SH_SIG_IGN)
+        /* ignore it */;
+    else
+    {
+        kHlpAssert(pfn != SH_SIG_ERR);
+        pfn(pshDst, signo);
+    }
+    (void)locked;
+}
+
+/**
+ * Handler for external signals.
+ *
+ * @param   signo       The signal.
+ */
+static void sh_sig_common_handler(int signo)
+{
+    shinstance *psh;
+
+/*    fprintf(stderr, "sh_sig_common_handler: signo=%d:%s\n", signo, sys_signame[signo]); */
+
+#ifdef _MSC_VER
+    /* We're treating SIGBREAK as if it was SIGINT for now: */
+    if (signo == SIGBREAK)
+        signo = SIGINT;
+#endif
+
+    /*
+     * No need to take locks if there is only one shell.
+     * Since this will be the initial case, just avoid the deadlock
+     * hell for a litte while...
+     */
+    if (g_num_shells <= 1)
+    {
+        psh = g_sh_head;
+        if (psh)
+            sh_sig_do_signal(NULL, psh, signo, 0 /* no lock */);
+    }
+    else
+    {
+        shmtxtmp tmp;
+        shmtx_enter(&g_sh_mtx, &tmp);
+
+        /** @todo signal focus chain or something? Atm there will only be one shell,
+         *        so it's not really important until we go threaded for real... */
+        psh = g_sh_tail;
+        while (psh != NULL)
+        {
+            sh_sig_do_signal(NULL, psh, signo, 1 /* locked */);
+            psh = psh->prev;
+        }
+
+        shmtx_leave(&g_sh_mtx, &tmp);
+    }
+}
+
+int sh_sigaction(shinstance *psh, int signo, const struct shsigaction *newp, struct shsigaction *oldp)
+{
+    if (newp)
+        TRACE2((psh, "sh_sigaction: signo=%d:%s newp=%p:{.sh_handler=%p, .sh_flags=%#x} oldp=%p\n",
+                signo, sys_signame[signo], newp, newp->sh_handler, newp->sh_flags, oldp));
+    else
+        TRACE2((psh, "sh_sigaction: signo=%d:%s newp=NULL oldp=%p\n", signo, sys_signame[signo], oldp));
+
+    /*
+     * Input validation.
+     */
+    if (signo >= NSIG || signo <= 0)
+    {
+        errno = EINVAL;
+        return -1;
+    }
+
+    /*
+     * Make sure our data is correct.
+     */
+    sh_int_lazy_init_sigaction(psh, signo);
+
+    /*
+     * Get the old one if requested.
+     */
+    if (oldp)
+        *oldp = psh->sigactions[signo];
+
+    /*
+     * Set the new one if it has changed.
+     *
+     * This will be attempted coordinated with the other signal handlers so
+     * that we can arrive at a common denominator.
+     */
+    if (    newp
+        &&  memcmp(&psh->sigactions[signo], newp, sizeof(*newp)))
+    {
+        shmtxtmp tmp;
+        shmtx_enter(&g_sh_mtx, &tmp);
+
+        /* Undo the accounting for the current entry. */
+        if (psh->sigactions[signo].sh_handler == SH_SIG_IGN)
+            g_sig_state[signo].num_ignore--;
+        else if (psh->sigactions[signo].sh_handler != SH_SIG_DFL)
+            g_sig_state[signo].num_specific--;
+        if (psh->sigactions[signo].sh_flags & SA_RESTART)
+            g_sig_state[signo].num_restart--;
+
+        /* Set the new entry. */
+        psh->sigactions[signo] = *newp;
+
+        /* Add the bits for the new action entry. */
+        if (psh->sigactions[signo].sh_handler == SH_SIG_IGN)
+            g_sig_state[signo].num_ignore++;
+        else if (psh->sigactions[signo].sh_handler != SH_SIG_DFL)
+            g_sig_state[signo].num_specific++;
+        if (psh->sigactions[signo].sh_flags & SA_RESTART)
+            g_sig_state[signo].num_restart++;
+
+        /*
+         * Calc new common action.
+         *
+         * This is quit a bit ASSUMPTIVE about the limited use. We will not
+         * bother synching the mask, and we pretend to care about SA_RESTART.
+         * The only thing we really actually care about is the sh_handler.
+         *
+         * On second though, it's possible we should just tie this to the root
+         * shell since it only really applies to external signal ...
+         */
+        if (    g_sig_state[signo].num_specific
+            ||  g_sig_state[signo].num_ignore != g_num_shells)
+            g_sig_state[signo].sa.sa_handler = sh_sig_common_handler;
+        else if (g_sig_state[signo].num_ignore)
+            g_sig_state[signo].sa.sa_handler = SIG_IGN;
+        else
+            g_sig_state[signo].sa.sa_handler = SIG_DFL;
+        g_sig_state[signo].sa.sa_flags = psh->sigactions[signo].sh_flags & SA_RESTART;
+
+        TRACE2((psh, "sh_sigaction: setting signo=%d:%s to {.sa_handler=%p, .sa_flags=%#x}\n",
+                signo, sys_signame[signo], g_sig_state[signo].sa.sa_handler, g_sig_state[signo].sa.sa_flags));
+#ifdef _MSC_VER
+        /* Throw SIGBREAK in with SIGINT for now. */
+        if (signo == SIGINT)
+            signal(SIGBREAK, g_sig_state[signo].sa.sa_handler);
+
+        if (signal(signo, g_sig_state[signo].sa.sa_handler) == SIG_ERR)
+        {
+            TRACE2((psh, "sh_sigaction: SIG_ERR, errno=%d signo=%d\n", errno, signo));
+            if (   signo != SIGHUP   /* whatever */
+                && signo != SIGQUIT
+                && signo != SIGPIPE
+                && signo != SIGTTIN
+                && signo != SIGTSTP
+                && signo != SIGTTOU
+                && signo != SIGCONT)
+                kHlpAssert(0);
+        }
+#else
+        if (sigaction(signo, &g_sig_state[signo].sa, NULL))
+            kHlpAssert(0);
+#endif
+
+        shmtx_leave(&g_sh_mtx, &tmp);
+    }
+
+    return 0;
+}
+
+shsig_t sh_signal(shinstance *psh, int signo, shsig_t handler)
+{
+    shsigaction_t sa;
+    shsig_t ret;
+
+    /*
+     * Implementation using sh_sigaction.
+     */
+    if (sh_sigaction(psh, signo, NULL, &sa))
+        return SH_SIG_ERR;
+
+    ret = sa.sh_handler;
+    sa.sh_flags &= SA_RESTART;
+    sa.sh_handler = handler;
+    sh_sigemptyset(&sa.sh_mask);
+    sh_sigaddset(&sa.sh_mask, signo); /* ?? */
+    if (sh_sigaction(psh, signo, &sa, NULL))
+        return SH_SIG_ERR;
+
+    return ret;
+}
+
+int sh_siginterrupt(shinstance *psh, int signo, int interrupt)
+{
+    shsigaction_t sa;
+    int oldflags = 0;
+
+    /*
+     * Implementation using sh_sigaction.
+     */
+    if (sh_sigaction(psh, signo, NULL, &sa))
+        return -1;
+    oldflags = sa.sh_flags;
+    if (interrupt)
+        sa.sh_flags &= ~SA_RESTART;
+    else
+        sa.sh_flags |= ~SA_RESTART;
+    if (!((oldflags ^ sa.sh_flags) & SA_RESTART))
+        return 0; /* unchanged. */
+
+    return sh_sigaction(psh, signo, &sa, NULL);
+}
+
+void sh_sigemptyset(shsigset_t *setp)
+{
+    memset(setp, 0, sizeof(*setp));
+}
+
+void sh_sigfillset(shsigset_t *setp)
+{
+    memset(setp, 0xff, sizeof(*setp));
+}
+
+void sh_sigaddset(shsigset_t *setp, int signo)
+{
+#ifdef _MSC_VER
+    *setp |= 1U << signo;
+#else
+    sigaddset(setp, signo);
+#endif
+}
+
+void sh_sigdelset(shsigset_t *setp, int signo)
+{
+#ifdef _MSC_VER
+    *setp &= ~(1U << signo);
+#else
+    sigdelset(setp, signo);
+#endif
+}
+
+int sh_sigismember(shsigset_t const *setp, int signo)
+{
+#ifdef _MSC_VER
+    return !!(*setp & (1U << signo));
+#else
+    return !!sigismember(setp, signo);
+#endif
+}
+
+int sh_sigprocmask(shinstance *psh, int operation, shsigset_t const *newp, shsigset_t *oldp)
+{
+    int rc;
+
+    if (    operation != SIG_BLOCK
+        &&  operation != SIG_UNBLOCK
+        &&  operation != SIG_SETMASK)
+    {
+        errno = EINVAL;
+        return -1;
+    }
+
+#if defined(SH_FORKED_MODE) && !defined(_MSC_VER)
+    rc = sigprocmask(operation, newp, oldp);
+    if (!rc && newp)
+        psh->sigmask = *newp;
+
+#else
+    if (oldp)
+        *oldp = psh->sigmask;
+    if (newp)
+    {
+        /* calc the new mask */
+        shsigset_t mask = psh->sigmask;
+        switch (operation)
+        {
+            case SIG_BLOCK:
+                for (rc = 0; rc < NSIG; rc++)
+                    if (sh_sigismember(newp, rc))
+                        sh_sigaddset(&mask, rc);
+                break;
+            case SIG_UNBLOCK:
+                for (rc = 0; rc < NSIG; rc++)
+                    if (sh_sigismember(newp, rc))
+                        sh_sigdelset(&mask, rc);
+                break;
+            case SIG_SETMASK:
+                mask = *newp;
+                break;
+        }
+
+# if defined(_MSC_VER)
+        rc = 0;
+# else
+        rc = sigprocmask(operation, &mask, NULL);
+        if (!rc)
+# endif
+            psh->sigmask = mask;
+    }
+
+#endif
+    return rc;
+}
+
+SH_NORETURN_1 void sh_abort(shinstance *psh)
+{
+    shsigset_t set;
+    TRACE2((psh, "sh_abort\n"));
+
+    /* block other async signals */
+    sh_sigfillset(&set);
+    sh_sigdelset(&set, SIGABRT);
+    sh_sigprocmask(psh, SIG_SETMASK, &set, NULL);
+
+    sh_sig_do_signal(psh, psh, SIGABRT, 0 /* no lock */);
+
+    /** @todo die in a nicer manner. */
+    *(char *)1 = 3;
+
+    TRACE2((psh, "sh_abort returns!\n"));
+    (void)psh;
+    abort();
+}
+
+void sh_raise_sigint(shinstance *psh)
+{
+    TRACE2((psh, "sh_raise(SIGINT)\n"));
+
+    sh_sig_do_signal(psh, psh, SIGINT, 0 /* no lock */);
+
+    TRACE2((psh, "sh_raise(SIGINT) returns\n"));
+}
+
+int sh_kill(shinstance *psh, shpid pid, int signo)
+{
+    shinstance *pshDst;
+    shmtxtmp tmp;
+    int rc;
+
+    /*
+     * Self or any of the subshells?
+     */
+    shmtx_enter(&g_sh_mtx, &tmp);
+
+    pshDst = g_sh_tail;
+    while (pshDst != NULL)
+    {
+        if (pshDst->pid == pid)
+        {
+            TRACE2((psh, "sh_kill(%" SHPID_PRI ", %d): pshDst=%p\n", pid, signo, pshDst));
+            sh_sig_do_signal(psh, pshDst, signo, 1 /* locked */);
+
+            shmtx_leave(&g_sh_mtx, &tmp);
+            return 0;
+        }
+        pshDst = pshDst->prev;
+    }
+
+    shmtx_leave(&g_sh_mtx, &tmp);
+
+    /*
+     * Some other process, call kill where possible
+     */
+#ifdef _MSC_VER
+    errno = ENOSYS;
+    rc = -1;
+#elif defined(SH_FORKED_MODE)
+/*    fprintf(stderr, "kill(%d, %d)\n", pid, signo);*/
+    rc = kill(pid, signo);
+#else
+# error "PORT ME?"
+#endif
+
+    TRACE2((psh, "sh_kill(%d, %d) -> %d [%d]\n", pid, signo, rc, errno));
+    return rc;
+}
+
+int sh_killpg(shinstance *psh, shpid pgid, int signo)
+{
+    shinstance *pshDst;
+    shmtxtmp tmp;
+    int rc;
+
+    /*
+     * Self or any of the subshells?
+     */
+    shmtx_enter(&g_sh_mtx, &tmp);
+
+    pshDst = g_sh_tail;
+    while (pshDst != NULL)
+    {
+        if (pshDst->pgid == pgid)
+        {
+            TRACE2((psh, "sh_killpg(%" SHPID_PRI ", %d): pshDst=%p\n", pgid, signo, pshDst));
+            sh_sig_do_signal(psh, pshDst, signo, 1 /* locked */);
+
+            shmtx_leave(&g_sh_mtx, &tmp);
+            return 0;
+        }
+        pshDst = pshDst->prev;
+    }
+
+    shmtx_leave(&g_sh_mtx, &tmp);
+
+#ifdef _MSC_VER
+    errno = ENOSYS;
+    rc = -1;
+#elif defined(SH_FORKED_MODE)
+    //fprintf(stderr, "killpg(%d, %d)\n", pgid, signo);
+    rc = killpg(pgid, signo);
+#else
+# error "PORTME?"
+#endif
+
+    TRACE2((psh, "sh_killpg(%" SHPID_PRI ", %d) -> %d [%d]\n", pgid, signo, rc, errno));
+    (void)psh;
+    return rc;
+}
+
+clock_t sh_times(shinstance *psh, shtms *tmsp)
+{
+#ifdef _MSC_VER
+    errno = ENOSYS;
+    return (clock_t)-1;
+#elif defined(SH_FORKED_MODE)
+    (void)psh;
+    return times(tmsp);
+#else
+# error "PORTME"
+#endif
+}
+
+int sh_sysconf_clk_tck(void)
+{
+#ifdef _MSC_VER
+    return CLK_TCK;
+#else
+    return sysconf(_SC_CLK_TCK);
+#endif
+}
+
+#ifndef SH_FORKED_MODE
+
+/**
+ * Retains a reference to a subshell status structure.
+ */
+static unsigned shsubshellstatus_retain(shsubshellstatus *sts)
+{
+    unsigned refs = sh_atomic_dec(&sts->refs);
+    kHlpAssert(refs > 1);
+    kHlpAssert(refs < 16);
+    return refs;
+}
+
+/**
+ * Releases a reference to a subshell status structure.
+ */
+static unsigned shsubshellstatus_release(shinstance *psh, shsubshellstatus *sts)
+{
+    unsigned refs = sh_atomic_dec(&sts->refs);
+    kHlpAssert(refs < ~(unsigned)0/4);
+    if (refs == 0)
+    {
+        shmtxtmp tmp;
+        shmtx_enter(&g_sh_sts_mtx, &tmp);
+        sts->next = g_sh_sts_free;
+        g_sh_sts_free = sts;
+        shmtx_leave(&g_sh_sts_mtx, &tmp);
+    }
+    return refs;
+}
+
+/**
+ * Creates a subshell status structure.
+ */
+static shsubshellstatus *shsubshellstatus_create(shinstance *psh, int refs)
+{
+    shsubshellstatus *sts;
+
+    /* Check the free list: */
+    if (g_sh_sts_free)
+    {
+        shmtxtmp tmp;
+        shmtx_enter(&g_sh_sts_mtx, &tmp);
+        sts = g_sh_sts_free;
+        if (sts)
+            g_sh_sts_free = sts->next;
+        shmtx_leave(&g_sh_sts_mtx, &tmp);
+    }
+    else
+        sts = NULL;
+    if (sts)
+    {
+# if K_OS == K_OS_WINDOWS
+        BOOL rc = ResetEvent((HANDLE)sts->towaiton);
+        kHlpAssert(rc); K_NOREF(rc);
+# endif
+    }
+    else
+    {
+        /* Create a new one: */
+        sts = (shsubshellstatus *)sh_malloc(psh, sizeof(*sts));
+        if (!sts)
+            return NULL;
+# if K_OS == K_OS_WINDOWS
+        sts->towaiton = (void *)CreateEventW(NULL /*noinherit*/, TRUE /*fManualReset*/,
+                                             FALSE /*fInitialState*/, NULL /*pszName*/);
+        if (!sts->towaiton)
+        {
+            kHlpAssert(0);
+            sh_free(psh, sts);
+            return NULL;
+        }
+# endif
+    }
+
+    /* Initialize it: */
+    sts->refs     = refs;
+    sts->status   = 999999;
+    sts->done     = 0;
+    sts->next     = NULL;
+# if K_OS == K_OS_WINDOWS
+    sts->hThread  = 0;
+# endif
+    return sts;
+}
+
+/**
+ * If we have a subshell status structure, signal and release it.
+ */
+static void shsubshellstatus_signal_and_release(shinstance *psh, int iExit)
+{
+    shsubshellstatus *sts = psh->subshellstatus;
+    if (sts)
+    {
+        BOOL rc;
+        HANDLE hThread;
+
+        sts->status = W_EXITCODE(iExit, 0);
+        sts->done   = K_TRUE;
+        rc = SetEvent((HANDLE)sts->towaiton); kHlpAssert(rc); K_NOREF(rc);
+
+        hThread = (HANDLE)sts->hThread;
+        sts->hThread = 0;
+        rc = CloseHandle(hThread); kHlpAssert(rc);
+
+        shsubshellstatus_release(psh, sts);
+        psh->subshellstatus = NULL;
+    }
+}
+
+
+#endif /* !SH_FORKED_MODE */
+
+/**
+ * Adds a child to the shell
+ *
+ * @returns 0 on success, on failure -1 and errno set to ENOMEM.
+ *
+ * @param   psh         The shell instance.
+ * @param   pid         The child pid.
+ * @param   hChild      Windows child wait handle (process if sts is NULL).
+ * @param   sts         Subshell status structure, NULL if progress.
+ */
+int sh_add_child(shinstance *psh, shpid pid, void *hChild, struct shsubshellstatus *sts)
+{
+    /* get a free table entry. */
+    unsigned i = psh->num_children++;
+    if (!(i % 32))
+    {
+        void *ptr = sh_realloc(psh, psh->children, sizeof(*psh->children) * (i + 32));
+        if (!ptr)
+        {
+            psh->num_children--;
+            errno = ENOMEM;
+            return -1;
+        }
+        psh->children = ptr;
+    }
+
+    /* add it */
+    psh->children[i].pid = pid;
+#if K_OS == K_OS_WINDOWS
+    psh->children[i].hChild = hChild;
+#endif
+#ifndef SH_FORKED_MODE
+    psh->children[i].subshellstatus = sts;
+#endif
+    (void)hChild; (void)sts;
+    return 0;
+}
+
+#ifdef SH_FORKED_MODE
+
+pid_t sh_fork(shinstance *psh)
+{
+    pid_t pid;
+    TRACE2((psh, "sh_fork\n"));
+
+#if K_OS == K_OS_WINDOWS //&& defined(SH_FORKED_MODE)
+    pid = shfork_do(psh);
+
+#elif defined(SH_FORKED_MODE)
+# ifdef _MSC_VER
+    pid = -1;
+    errno = ENOSYS;
+# else
+    pid = fork();
+# endif
+
+#else
+
+#endif
+
+    /* child: update the pid and zap the children array */
+    if (!pid)
+    {
+# ifdef _MSC_VER
+        psh->pid = _getpid();
+# else
+        psh->pid = getpid();
+# endif
+        psh->num_children = 0;
+    }
+
+    TRACE2((psh, "sh_fork -> %d [%d]\n", pid, errno));
+    (void)psh;
+    return pid;
+}
+
+#else  /* !SH_FORKED_MODE */
+
+# ifdef _MSC_VER
+/** Thread wrapper procedure. */
+static unsigned __stdcall sh_thread_wrapper(void *user)
+{
+    shinstance * volatile volpsh = (shinstance *)user;
+    shinstance *psh = (shinstance *)user;
+    struct jmploc exitjmp;
+    int iExit;
+
+    /* Update the TID and PID (racing sh_thread_start) */
+    DWORD tid = GetCurrentThreadId();
+    shpid pid = GetCurrentProcessId();
+
+    pid = SHPID_MAKE(pid, tid);
+    psh->pid = pid;
+    psh->tid = tid;
+
+    /* Set the TLS entry before we try TRACE or TRACE2. */
+    shthread_set_shell(psh);
+
+    TRACE2((psh, "sh_thread_wrapper: enter\n"));
+    if ((iExit = setjmp(exitjmp.loc)) == 0)
+    {
+        psh->exitjmp = &exitjmp;
+        iExit = psh->thread(psh, psh->threadarg);
+        TRACE2((psh, "sh_thread_wrapper: thread proc returns %d (%#x)\n", iExit, iExit));
+    }
+    else
+    {
+        psh = volpsh; /* paranoia */
+        psh->exitjmp = NULL;
+        TRACE2((psh, "sh_thread_wrapper: longjmp: iExit=%d (%#x)\n", iExit, iExit));
+        if (iExit == SH_EXIT_ZERO)
+            iExit = 0;
+    }
+
+    /* Signal parent. */
+    shsubshellstatus_signal_and_release(psh, iExit);
+
+    /* destroy the shell instance and exit the thread. */
+    TRACE2((psh, "sh_thread_wrapper: quits - iExit=%d\n", iExit));
+    sh_destroy(psh);
+    shthread_set_shell(NULL);
+    _endthreadex(iExit);
+    return iExit;
+}
+# else
+#  error "PORTME"
+# endif
+
+/**
+ * Starts a sub-shell thread.
+ */
+shpid sh_thread_start(shinstance *pshparent, shinstance *pshchild, int (*thread)(shinstance *, void *), void *arg)
+{
+# ifdef _MSC_VER
+    shpid pid;
+
+    shsubshellstatus *sts = shsubshellstatus_create(pshparent, 2);
+    pshchild->subshellstatus = sts;
+    if (sts)
+    {
+        unsigned tid = 0;
+        uintptr_t hThread;
+
+        pshchild->thread    = thread;
+        pshchild->threadarg = arg;
+
+        hThread = _beginthreadex(NULL /*security*/, 0 /*stack_size*/, sh_thread_wrapper, pshchild, 0 /*initflags*/, &tid);
+        sts->hThread = hThread;
+        if (hThread != -1)
+        {
+            pid = SHPID_MAKE(SHPID_GET_PID(pshparent->pid), tid);
+            pshchild->pid = pid;
+            pshchild->tid = tid;
+
+            if (sh_add_child(pshparent, pid, sts->towaiton, sts) == 0)
+            {
+                return pid;
+            }
+
+            shsubshellstatus_retain(sts);
+            pid = -ENOMEM;
+        }
+        else
+            pid = -errno;
+        shsubshellstatus_release(pshparent, sts);
+        shsubshellstatus_release(pshparent, sts);
+    }
+    else
+        pid = -ENOMEM;
+    return pid;
+
+# else
+#  error "PORTME"
+# endif
+}
+
+#endif /* !SH_FORKED_MODE */
+
+/** waitpid() */
+shpid sh_waitpid(shinstance *psh, shpid pid, int *statusp, int flags)
+{
+    shpid       pidret;
+#if K_OS == K_OS_WINDOWS //&& defined(SH_FORKED_MODE)
+    DWORD       dwRet;
+    HANDLE      hChild = INVALID_HANDLE_VALUE;
+    unsigned    i;
+
+    *statusp = 0;
+    pidret = -1;
+    if (pid != -1)
+    {
+        /*
+         * A specific child, try look it up in the child process table
+         * and wait for it.
+         */
+        for (i = 0; i < psh->num_children; i++)
+            if (psh->children[i].pid == pid)
+                break;
+        if (i < psh->num_children)
+        {
+            dwRet = WaitForSingleObject(psh->children[i].hChild,
+                                        flags & WNOHANG ? 0 : INFINITE);
+            if (dwRet == WAIT_OBJECT_0)
+                hChild = psh->children[i].hChild;
+            else if (dwRet == WAIT_TIMEOUT)
+            {
+                i = ~0; /* don't try close anything */
+                pidret = 0;
+            }
+            else
+                errno = ECHILD;
+        }
+        else
+            errno = ECHILD;
+    }
+    else if (psh->num_children <= MAXIMUM_WAIT_OBJECTS)
+    {
+        HANDLE ahChildren[MAXIMUM_WAIT_OBJECTS];
+        for (i = 0; i < psh->num_children; i++)
+            ahChildren[i] = psh->children[i].hChild;
+        dwRet = WaitForMultipleObjects(psh->num_children, &ahChildren[0],
+                                       FALSE,
+                                       flags & WNOHANG ? 0 : INFINITE);
+        i = dwRet - WAIT_OBJECT_0;
+        if (i < psh->num_children)
+        {
+            hChild = psh->children[i].hChild;
+        }
+        else if (dwRet == WAIT_TIMEOUT)
+        {
+            i = ~0; /* don't try close anything */
+            pidret = 0;
+        }
+        else
+        {
+            i = ~0; /* don't try close anything */
+            errno = EINVAL;
+        }
+    }
+    else
+    {
+        fprintf(stderr, "panic! too many children!\n");
+        i = ~0;
+        *(char *)1 = '\0'; /** @todo implement this! */
+    }
+
+    /*
+     * Close the handle, and if we succeeded collect the exit code first.
+     */
+    if (i < psh->num_children)
+    {
+        BOOL rc;
+        if (hChild != INVALID_HANDLE_VALUE)
+        {
+            DWORD dwExitCode = 127;
+# ifndef SH_FORKED_MODE
+            if (psh->children[i].subshellstatus)
+            {
+                rc = psh->children[i].subshellstatus->done;
+                kHlpAssert(rc);
+                if (rc)
+                {
+                    *statusp = psh->children[i].subshellstatus->status;
+                    pidret = psh->children[i].pid;
+                }
+            }
+            else
+# endif
+            if (GetExitCodeProcess(hChild, &dwExitCode))
+            {
+                pidret = psh->children[i].pid;
+                if (dwExitCode && !W_EXITCODE(dwExitCode, 0))
+                    dwExitCode |= 16;
+                *statusp = W_EXITCODE(dwExitCode, 0);
+            }
+            else
+                errno = EINVAL;
+        }
+
+        /* close and remove */
+# ifndef SH_FORKED_MODE
+        if (psh->children[i].subshellstatus)
+        {
+            shsubshellstatus_release(psh, psh->children[i].subshellstatus);
+            psh->children[i].subshellstatus = NULL;
+        }
+        else
+# endif
+        {
+            rc = CloseHandle(psh->children[i].hChild);
+            kHlpAssert(rc);
+        }
+
+        psh->num_children--;
+        if (i < psh->num_children)
+            psh->children[i] = psh->children[psh->num_children];
+        psh->children[psh->num_children].hChild = NULL;
+# ifndef SH_FORKED_MODE
+        psh->children[psh->num_children].subshellstatus = NULL;
+# endif
+    }
+
+#elif defined(SH_FORKED_MODE)
+    *statusp = 0;
+# ifdef _MSC_VER
+    pidret = -1;
+    errno = ENOSYS;
+# else
+    pidret = waitpid(pid, statusp, flags);
+# endif
+
+#else
+#endif
+
+    TRACE2((psh, "waitpid(%" SHPID_PRI ", %p, %#x) -> %" SHPID_PRI " [%d] *statusp=%#x (rc=%d)\n", pid, statusp, flags,
+            pidret, errno, *statusp, WEXITSTATUS(*statusp)));
+    (void)psh;
+    return pidret;
+}
+
+SH_NORETURN_1 void sh__exit(shinstance *psh, int iExit)
+{
+    TRACE2((psh, "sh__exit(%d)\n", iExit));
+
+#if defined(SH_FORKED_MODE)
+    _exit(iExit);
+    (void)psh;
+
+#else
+    psh->exitstatus = iExit;
+
+    /*
+     * If we're a thread, jump to the sh_thread_wrapper and make a clean exit.
+     */
+    if (psh->thread)
+    {
+        shsubshellstatus_signal_and_release(psh, iExit);
+        if (psh->exitjmp)
+            longjmp(psh->exitjmp->loc, !iExit ? SH_EXIT_ZERO : iExit);
+        else
+        {
+            static char const s_msg[] = "fatal error in sh__exit: exitjmp is NULL!\n";
+            shfile_write(&psh->fdtab, 2, s_msg, sizeof(s_msg) - 1);
+            _exit(iExit);
+        }
+    }
+
+    /*
+     * The main thread will typically have to stick around till all subshell
+     * threads have been stopped.  We must tear down this shell instance as
+     * much as possible before doing this, though, as subshells could be
+     * waiting for pipes and such to be closed before they're willing to exit.
+     */
+    if (g_num_shells > 1)
+    {
+        TRACE2((psh, "sh__exit: %u shells around, must wait...\n", g_num_shells));
+        shfile_uninit(&psh->fdtab, psh->tracefd);
+        sh_int_unlink(psh);
+        /** @todo    */
+    }
+
+    _exit(iExit);
+#endif
+}
+
+int sh_execve(shinstance *psh, const char *exe, const char * const *argv, const char * const *envp)
+{
+    int rc;
+
+    g_stat_execs++;
+
+#ifdef DEBUG
+    /* log it all */
+    TRACE2((psh, "sh_execve(%p:{%s}, %p, %p}\n", exe, exe, argv, envp));
+    for (rc = 0; argv[rc]; rc++)
+        TRACE2((psh, "  argv[%d]=%p:{%s}\n", rc, argv[rc], argv[rc]));
+#endif
+
+    if (!envp)
+        envp = (const char * const *)sh_environ(psh);
+
+#if defined(SH_FORKED_MODE) && K_OS != K_OS_WINDOWS
+# ifdef _MSC_VER
+    errno = 0;
+    {
+        intptr_t rc2 = _spawnve(_P_WAIT, exe, (char **)argv, (char **)envp);
+        if (rc2 != -1)
+        {
+            TRACE2((psh, "sh_execve: child exited, rc=%d. (errno=%d)\n", rc, errno));
+            rc = (int)rc2;
+            if (!rc && rc2)
+                rc = 16;
+            exit(rc);
+        }
+    }
+    rc = -1;
+
+# else
+    rc = shfile_exec_unix(&psh->fdtab);
+    if (!rc)
+        rc = execve(exe, (char **)argv, (char **)envp);
+# endif
+
+#else
+# if K_OS == K_OS_WINDOWS
+    {
+        /*
+         * This ain't quite straight forward on Windows...
+         */
+        PROCESS_INFORMATION ProcInfo;
+        STARTUPINFO StrtInfo;
+        shfdexecwin fdinfo;
+        char *cwd = shfile_getcwd(&psh->fdtab, NULL, 0);
+        char *cmdline;
+        size_t cmdline_size;
+        char *envblock;
+        size_t env_size;
+        char *p;
+        int i;
+
+        /* Create the environment block. */
+        if (!envp)
+            envp = sh_environ(psh);
+        env_size = 2;
+        for (i = 0; envp[i]; i++)
+            env_size += strlen(envp[i]) + 1;
+        envblock = p = sh_malloc(psh, env_size);
+        for (i = 0; envp[i]; i++)
+        {
+            size_t len = strlen(envp[i]) + 1;
+            memcpy(p, envp[i], len);
+            p += len;
+        }
+        *p = '\0';
+
+        /* Figure the size of the command line. Double quotes makes this
+           tedious and we overestimate to simplify. */
+        cmdline_size = 2;
+        for (i = 0; argv[i]; i++)
+        {
+            const char *arg = argv[i];
+            cmdline_size += strlen(arg) + 3;
+            arg = strchr(arg, '"');
+            if (arg)
+            {
+                do
+                    cmdline_size++;
+                while ((arg = strchr(arg + 1, '"')) != NULL);
+                arg = argv[i] - 1;
+                while ((arg = strchr(arg + 1, '\\')) != NULL);
+                    cmdline_size++;
+            }
+        }
+
+        /* Create the command line. */
+        cmdline = p = sh_malloc(psh, cmdline_size);
+        for (i = 0; argv[i]; i++)
+        {
+            const char *arg = argv[i];
+            const char *cur = arg;
+            size_t len = strlen(arg);
+            int quoted = 0;
+            char ch;
+            while ((ch = *cur++) != '\0')
+                if (ch <= 0x20 || strchr("&><|%", ch) != NULL)
+                {
+                    quoted = 1;
+                    break;
+                }
+
+            if (i != 0)
+                *(p++) = ' ';
+            if (quoted)
+                *(p++) = '"';
+            if (memchr(arg, '"', len) == NULL)
+            {
+                memcpy(p, arg, len);
+                p += len;
+            }
+            else
+            {   /* MS CRT style: double quotes must be escaped; backslashes
+                   must be escaped if followed by double quotes. */
+                while ((ch = *arg++) != '\0')
+                    if (ch != '\\' && ch != '"')
+                        *p++ = ch;
+                    else if (ch == '"')
+                    {
+                        *p++ = '\\';
+                        *p++ = '"';
+                    }
+                    else
+                    {
+                        unsigned slashes = 1;
+                        *p++ = '\\';
+                        while (*arg == '\\')
+                        {
+                            *p++ = '\\';
+                            slashes++;
+                            arg++;
+                        }
+                        if (*arg == '"')
+                        {
+                            while (slashes-- > 0)
+                                *p++ = '\\';
+                            *p++ = '\\';
+                            *p++ = '"';
+                            arg++;
+                        }
+                    }
+            }
+            if (quoted)
+                *(p++) = '"';
+        }
+        p[0] = p[1] = '\0';
+
+        /* Init the info structure */
+        memset(&StrtInfo, '\0', sizeof(StrtInfo));
+        StrtInfo.cb = sizeof(StrtInfo);
+
+        /* File handles. */
+        fdinfo.strtinfo = &StrtInfo;
+        shfile_exec_win(&psh->fdtab, 1 /* prepare */, &fdinfo);
+        TRACE2((psh, "sh_execve: inherithandles=%d replacehandles={%d,%d,%d} handles={%p,%p,%p} suspended=%d Reserved2=%p LB %#x\n",
+                fdinfo.inherithandles, fdinfo.replacehandles[0], fdinfo.replacehandles[1], fdinfo.replacehandles[2],
+                fdinfo.handles[0], fdinfo.handles[1], fdinfo.handles[3], fdinfo.startsuspended,
+                StrtInfo.lpReserved2, StrtInfo.cbReserved2));
+        if (!fdinfo.inherithandles)
+        {
+            StrtInfo.dwFlags |= STARTF_USESTDHANDLES;
+            StrtInfo.hStdInput  = INVALID_HANDLE_VALUE;
+            StrtInfo.hStdOutput = INVALID_HANDLE_VALUE;
+            StrtInfo.hStdError  = INVALID_HANDLE_VALUE;
+        }
+        else
+        {
+            StrtInfo.dwFlags |= STARTF_USESTDHANDLES;
+            StrtInfo.hStdInput  = (HANDLE)fdinfo.handles[0];
+            StrtInfo.hStdOutput = (HANDLE)fdinfo.handles[1];
+            StrtInfo.hStdError  = (HANDLE)fdinfo.handles[2];
+            g_stat_execs_serialized++;
+        }
+
+        /* Get going... */
+        rc = CreateProcessA(exe,
+                            cmdline,
+                            NULL,         /* pProcessAttributes */
+                            NULL,         /* pThreadAttributes */
+                            fdinfo.inherithandles,
+                            fdinfo.startsuspended ? CREATE_SUSPENDED : 0,
+                            envblock,
+                            cwd,
+                            &StrtInfo,
+                            &ProcInfo);
+        if (rc)
+        {
+            DWORD dwErr;
+            DWORD dwExitCode;
+
+            if (fdinfo.startsuspended)
+            {
+                char errmsg[512];
+                if (!fdinfo.inherithandles)
+                    rc = nt_child_inject_standard_handles(ProcInfo.hProcess, fdinfo.replacehandles,
+                                                          (HANDLE *)&fdinfo.handles[0], errmsg, sizeof(errmsg));
+                else
+                    rc = 0;
+                if (!rc)
+                {
+#  ifdef KASH_ASYNC_CLOSE_HANDLE
+                    shfile_async_close_sync();
+#  endif
+                    rc = ResumeThread(ProcInfo.hThread);
+                    if (!rc)
+                        TRACE2((psh, "sh_execve: ResumeThread failed: %u -> errno=ENXIO\n", GetLastError()));
+                }
+                else
+                {
+                    TRACE2((psh, "sh_execve: nt_child_inject_standard_handles failed: %d -> errno=ENXIO; %s\n", rc, errmsg));
+                    rc = FALSE;
+                }
+                errno = ENXIO;
+            }
+
+            shfile_exec_win(&psh->fdtab, rc ? 0 /* done */ : -1 /* done but failed */, &fdinfo);
+
+            CloseHandle(ProcInfo.hThread);
+            ProcInfo.hThread = INVALID_HANDLE_VALUE;
+            if (rc)
+            {
+                /*
+                 * Wait for it and forward the exit code.
+                 */
+                dwErr = WaitForSingleObject(ProcInfo.hProcess, INFINITE);
+                kHlpAssert(dwErr == WAIT_OBJECT_0);
+
+                if (GetExitCodeProcess(ProcInfo.hProcess, &dwExitCode))
+                {
+#  ifndef SH_FORKED_MODE
+                    shsubshellstatus_signal_and_release(psh, (int)dwExitCode);
+#  endif
+                    CloseHandle(ProcInfo.hProcess);
+                    ProcInfo.hProcess = INVALID_HANDLE_VALUE;
+                    sh__exit(psh, dwExitCode);
+                }
+
+                /* this shouldn't happen... */
+                TRACE2((psh, "sh_execve: GetExitCodeProcess failed: %u\n", GetLastError()));
+                kHlpAssert(0);
+                errno = EINVAL;
+            }
+            TerminateProcess(ProcInfo.hProcess, 0x40000015);
+            CloseHandle(ProcInfo.hProcess);
+        }
+        else
+        {
+            DWORD dwErr = GetLastError();
+
+            shfile_exec_win(&psh->fdtab, -1 /* done but failed */, &fdinfo);
+
+            switch (dwErr)
+            {
+                case ERROR_FILE_NOT_FOUND:          errno = ENOENT; break;
+                case ERROR_PATH_NOT_FOUND:          errno = ENOENT; break;
+                case ERROR_BAD_EXE_FORMAT:          errno = ENOEXEC; break;
+                case ERROR_INVALID_EXE_SIGNATURE:   errno = ENOEXEC; break;
+                default:                            errno = EINVAL; break;
+            }
+            TRACE2((psh, "sh_execve: dwErr=%d -> errno=%d\n", dwErr, errno));
+        }
+    }
+    rc = -1;
+
+# else
+    errno = ENOSYS;
+    rc = -1;
+# endif
+#endif
+
+    TRACE2((psh, "sh_execve -> %d [%d]\n", rc, errno));
+    (void)psh;
+    return (int)rc;
+}
+
+uid_t sh_getuid(shinstance *psh)
+{
+#ifdef _MSC_VER
+    uid_t uid = 0;
+#else
+    uid_t uid = getuid();
+#endif
+
+    TRACE2((psh, "sh_getuid() -> %d [%d]\n", uid, errno));
+    (void)psh;
+    return uid;
+}
+
+uid_t sh_geteuid(shinstance *psh)
+{
+#ifdef _MSC_VER
+    uid_t euid = 0;
+#else
+    uid_t euid = geteuid();
+#endif
+
+    TRACE2((psh, "sh_geteuid() -> %d [%d]\n", euid, errno));
+    (void)psh;
+    return euid;
+}
+
+gid_t sh_getgid(shinstance *psh)
+{
+#ifdef _MSC_VER
+    gid_t gid = 0;
+#else
+    gid_t gid = getgid();
+#endif
+
+    TRACE2((psh, "sh_getgid() -> %d [%d]\n", gid, errno));
+    (void)psh;
+    return gid;
+}
+
+gid_t sh_getegid(shinstance *psh)
+{
+#ifdef _MSC_VER
+    gid_t egid = 0;
+#else
+    gid_t egid = getegid();
+#endif
+
+    TRACE2((psh, "sh_getegid() -> %d [%d]\n", egid, errno));
+    (void)psh;
+    return egid;
+}
+
+shpid sh_getpid(shinstance *psh)
+{
+    return psh->pid;
+}
+
+shpid sh_getpgrp(shinstance *psh)
+{
+    shpid pgid = psh->pgid;
+#ifndef _MSC_VER
+    kHlpAssert(pgid == getpgrp());
+#endif
+
+    TRACE2((psh, "sh_getpgrp() -> %" SHPID_PRI " [%d]\n", pgid, errno));
+    return pgid;
+}
+
+/**
+ * @param   pid     Should always be zero, i.e. referring to the current shell
+ *                  process.
+ */
+shpid sh_getpgid(shinstance *psh, shpid pid)
+{
+    shpid pgid;
+    if (pid == 0 || psh->pid == pid)
+    {
+        pgid = psh->pgid;
+#ifndef _MSC_VER
+        kHlpAssert(pgid == getpgrp());
+#endif
+    }
+    else
+    {
+        kHlpAssert(0);
+        errno = ESRCH;
+        pgid = -1;
+    }
+
+    TRACE2((psh, "sh_getpgid(%" SHPID_PRI ") -> %" SHPID_PRI " [%d]\n", pid, pgid, errno));
+    return pgid;
+}
+
+/**
+ *
+ * @param   pid     The pid to modify.  This is always 0, except when forkparent
+ *                  calls to group a newly created child.  Though, we might
+ *                  almost safely ignore it in that case as the child will also
+ *                  perform the operation.
+ * @param   pgid    The process group to assign @a pid to.
+ */
+int sh_setpgid(shinstance *psh, shpid pid, shpid pgid)
+{
+#if defined(SH_FORKED_MODE) && !defined(_MSC_VER)
+    int rc = setpgid(pid, pgid);
+    TRACE2((psh, "sh_setpgid(%" SHPID_PRI ", %" SHPID_PRI ") -> %d [%d]\n", pid, pgid, rc, errno));
+    (void)psh;
+#else
+    int rc = 0;
+    if (pid == 0 || psh->pid == pid)
+    {
+        TRACE2((psh, "sh_setpgid(self,): %" SHPID_PRI " -> %" SHPID_PRI "\n", psh->pgid, pgid));
+        psh->pgid = pgid;
+    }
+    else
+    {
+        /** @todo fixme   */
+        rc = -1;
+        errno = ENOSYS;
+    }
+#endif
+    return rc;
+}
+
+shpid sh_tcgetpgrp(shinstance *psh, int fd)
+{
+    shpid pgrp;
+
+#ifdef _MSC_VER
+    pgrp = -1;
+    errno = ENOSYS;
+#elif defined(SH_FORKED_MODE)
+    pgrp = tcgetpgrp(fd);
+#else
+# error "PORT ME"
+#endif
+
+    TRACE2((psh, "sh_tcgetpgrp(%d) -> %" SHPID_PRI " [%d]\n", fd, pgrp, errno));
+    (void)psh;
+    return pgrp;
+}
+
+int sh_tcsetpgrp(shinstance *psh, int fd, shpid pgrp)
+{
+    int rc;
+    TRACE2((psh, "sh_tcsetpgrp(%d, %" SHPID_PRI ")\n", fd, pgrp));
+
+#ifdef _MSC_VER
+    rc = -1;
+    errno = ENOSYS;
+#elif defined(SH_FORKED_MODE)
+    rc = tcsetpgrp(fd, pgrp);
+#else
+# error "PORT ME"
+#endif
+
+    TRACE2((psh, "sh_tcsetpgrp(%d, %" SHPID_PRI ") -> %d [%d]\n", fd, pgrp, rc, errno));
+    (void)psh;
+    return rc;
+}
+
+int sh_getrlimit(shinstance *psh, int resid, shrlimit *limp)
+{
+#ifdef _MSC_VER
+    int rc = -1;
+    errno = ENOSYS;
+#elif defined(SH_FORKED_MODE)
+    int rc = getrlimit(resid, limp);
+#else
+# error "PORT ME"
+    /* returned the stored limit */
+#endif
+
+    TRACE2((psh, "sh_getrlimit(%d, %p) -> %d [%d] {%ld,%ld}\n",
+            resid, limp, rc, errno, (long)limp->rlim_cur, (long)limp->rlim_max));
+    (void)psh;
+    return rc;
+}
+
+int sh_setrlimit(shinstance *psh, int resid, const shrlimit *limp)
+{
+#ifdef _MSC_VER
+    int rc = -1;
+    errno = ENOSYS;
+#elif defined(SH_FORKED_MODE)
+    int rc = setrlimit(resid, limp);
+#else
+# error "PORT ME"
+    /* if max(shell) < limp; then setrlimit; fi
+       if success; then store limit for later retrival and maxing. */
+
+#endif
+
+    TRACE2((psh, "sh_setrlimit(%d, %p:{%ld,%ld}) -> %d [%d]\n",
+            resid, limp, (long)limp->rlim_cur, (long)limp->rlim_max, rc, errno));
+    (void)psh;
+    return rc;
+}
+
+
+/* Wrapper for strerror that makes sure it doesn't return NULL and causes the
+   caller or fprintf routines to crash. */
+const char *sh_strerror(shinstance *psh, int error)
+{
+    char *err = strerror(error);
+    if (!err)
+        return "strerror return NULL!";
+    (void)psh;
+    return err;
+}
+
diff --git a/src/kash/shinstance.h b/src/kash/shinstance.h
new file mode 100644
index 0000000..f181f33
--- /dev/null
+++ b/src/kash/shinstance.h
@@ -0,0 +1,606 @@
+/* $Id: shinstance.h 3480 2020-09-21 11:20:56Z bird $ */
+/** @file
+ * The shell instance and it's methods.
+ */
+
+/*
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef ___shinstance_h
+#define ___shinstance_h
+
+#include <stdio.h> /* BUFSIZ */
+#include <signal.h> /* NSIG */
+#ifndef _MSC_VER
+# include <termios.h>
+# include <sys/types.h>
+# include <sys/ioctl.h>
+# include <sys/resource.h>
+#endif
+#include <errno.h>
+#ifdef _MSC_VER
+# define EWOULDBLOCK    140
+#endif
+
+#include "shtypes.h"
+#include "shthread.h"
+#include "shfile.h"
+#include "shheap.h"
+#include "shell.h"
+#include "output.h"
+#include "options.h"
+
+#include "expand.h"
+#include "exec.h"
+#include "var.h"
+#include "show.h"
+
+#ifdef _MSC_VER
+# define strcasecmp stricmp
+# define strncasecmp strnicmp
+#endif
+
+#ifndef SH_FORKED_MODE
+extern shmtx g_sh_exec_inherit_mtx;
+#endif
+
+#ifndef SH_FORKED_MODE
+/**
+ * Subshell status.
+ */
+typedef struct shsubshellstatus
+{
+    unsigned volatile   refs;           /**< Reference counter. */
+    int volatile        status;         /**< The exit code. */
+    KBOOL volatile      done;           /**< Set if done (valid exit code). */
+    void               *towaiton;       /**< Event semaphore / whatever to wait on. */
+# if K_OS == K_OS_WINDOWS
+    uintptr_t volatile  hThread;        /**< The thread handle (child closes this). */
+# endif
+    struct shsubshellstatus *next;      /**< Next free one on the free chain. */
+} shsubshellstatus;
+#else
+struct shsubshellstatus;
+#endif
+
+/**
+ * A child process.
+ */
+typedef struct shchild
+{
+    shpid               pid;            /**< The pid. */
+#if K_OS == K_OS_WINDOWS
+    void               *hChild;         /**< The handle to wait on. */
+#endif
+#ifndef SH_FORKED_MODE
+    shsubshellstatus   *subshellstatus; /**< Pointer to the subshell status structure.  NULL if child process. */
+#endif
+} shchild;
+
+/* memalloc.c */
+#define MINSIZE 504		/* minimum size of a block */
+struct stack_block {
+	struct stack_block *prev;
+	char space[MINSIZE];
+};
+
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+/** Parser stack allocator block.
+ * These are reference counted so they can be shared between the parent and
+ * child shells.  They are also using as an alternative to copying function
+ * definitions, here the final goal is to automatically emit separate
+ * pstack_blocks for function while parsing to make it more flexible. */
+typedef struct pstack_block {
+    /** Pointer to the next unallocated byte (= stacknxt). */
+    char               *nextbyte;
+    /** Number of bytes available in the current stack block (= stacknleft). */
+    size_t              avail;
+    /* Number of chars left for string data (PSTPUTC, PSTUPUTC, et al) (= sstrnleft). */
+    size_t              strleft;
+    /** Top of the allocation stack (nextbyte points within this). */
+    struct stack_block *top;
+    /** Size of the top stack element (user space only). */
+    size_t              topsize;
+    /** @name statistics
+     * @{ */
+    size_t              allocations;
+    size_t              bytesalloced;
+    size_t              nodesalloced;
+    size_t              entriesalloced;
+    size_t              strbytesalloced;
+    size_t              blocks;
+    size_t              fragmentation;
+    /** @} */
+    /** Reference counter. */
+    unsigned volatile   refs;
+    /** Whether to make it current when is restored to the top of the stack. */
+    KBOOL               done;
+    /** The first stack block. */
+    struct stack_block  first;
+} pstack_block;
+#endif
+
+/* input.c */
+struct strpush {
+	struct strpush *prev;	/* preceding string on stack */
+	char *prevstring;
+	int prevnleft;
+	int prevlleft;
+	struct alias *ap;	/* if push was associated with an alias */
+};
+
+/*
+ * The parsefile structure pointed to by the global variable parsefile
+ * contains information about the current file being read.
+ */
+struct parsefile {
+	struct parsefile *prev;	/* preceding file on stack */
+	int linno;		/* current line */
+	int fd;			/* file descriptor (or -1 if string) */
+	int nleft;		/* number of chars left in this line */
+	int lleft;		/* number of chars left in this buffer */
+	char *nextc;		/* next char in buffer */
+	char *buf;		/* input buffer */
+	struct strpush *strpush; /* for pushing strings at this level */
+	struct strpush basestrpush; /* so pushing one is fast */
+};
+
+/* exec.c */
+#define CMDTABLESIZE 31		/* should be prime */
+#define ARB 1			/* actual size determined at run time */
+
+struct tblentry {
+	struct tblentry *next;	/* next entry in hash chain */
+	union param param;	/* definition of builtin function */
+	short cmdtype;		/* index identifying command */
+	char rehash;		/* if set, cd done since entry created */
+	char cmdname[ARB];	/* name of command */
+};
+
+/* expand.c */
+/*
+ * Structure specifying which parts of the string should be searched
+ * for IFS characters.
+ */
+struct ifsregion {
+	struct ifsregion *next;	/* next region in list */
+	int begoff;		/* offset of start of region */
+	int endoff;		/* offset of end of region */
+	int inquotes;		/* search for nul bytes only */
+};
+
+/* redir.c */
+struct redirtab {
+	struct redirtab *next;
+	short renamed[10];
+};
+
+/**
+ * This is a replacement for temporary node field nfile.expfname.
+ * Uses stack allocator, created by expredir(), duplicated by
+ * subshellinitredir() and popped (but not freed) by expredircleanup().
+ */
+typedef struct redirexpfnames
+{
+    struct redirexpfnames *prev;        /**< Previous record. */
+    unsigned            depth;          /**< Nesting depth. */
+    unsigned            count;          /**< Number of expanded filenames in the array. */
+    char               *names[1];       /**< Variable size. */
+} redirexpfnames;
+
+
+/**
+ * A shell instance.
+ *
+ * This is the core structure of the shell, it contains all
+ * the data associated with a shell process except that it's
+ * running in a thread and not a separate process.
+ */
+struct shinstance
+{
+    struct shinstance  *next;           /**< The next shell instance. */
+    struct shinstance  *prev;           /**< The previous shell instance. */
+    struct shinstance  *parent;         /**< The parent shell instance. */
+    shpid               pid;            /**< The (fake) process id of this shell instance. */
+    shtid               tid;            /**< The thread identifier of the thread for this shell. */
+    shpid               pgid;           /**< Process group ID. */
+    shfdtab             fdtab;          /**< The file descriptor table. */
+    shsigaction_t       sigactions[NSIG]; /**< The signal actions registered with this shell instance. */
+    shsigset_t          sigmask;        /**< Our signal mask. */
+    char              **shenviron;      /**< The environment vector. */
+    int                 linked;         /**< Set if we're still linked. */
+    unsigned            num_children;   /**< Number of children in the array. */
+    shchild            *children;       /**< The child array. */
+#ifndef SH_FORKED_MODE
+    int (*thread)(struct shinstance *, void *); /**< The thread procedure. */
+    void               *threadarg;      /**< The thread argument. */
+    struct jmploc      *exitjmp;        /**< Long jump target in sh_thread_wrapper for use by sh__exit. */
+    shsubshellstatus   *subshellstatus; /**< Pointer to the subshell status structure (NULL if root). */
+#endif
+
+    /* alias.c */
+#define ATABSIZE 39
+    struct alias       *atab[ATABSIZE];
+    unsigned            aliases;        /**< Number of active aliases. */
+
+    /* cd.c */
+    char               *curdir;         /**< current working directory */
+    char               *prevdir;        /**< previous working directory */
+    char               *cdcomppath;     /**< (stalloc) */
+    int                 getpwd_first;   /**< static in getpwd. (initialized to 1!) */
+
+    /* error.h */
+    struct jmploc      *handler;
+    int                 exception;
+    int                 exerrno/* = 0 */; /**< Last exec error */
+    int volatile        suppressint;
+    int volatile        intpending;
+
+    /* error.c */
+    char                errmsg_buf[16]; /**< static in errmsg. (bss) */
+
+    /* eval.h */
+    char               *commandname;    /**< currently executing command */
+    int                 exitstatus;     /**< exit status of last command */
+    int                 back_exitstatus;/**< exit status of backquoted command */
+    struct strlist     *cmdenviron;     /**< environment for builtin command (varlist from evalcommand()) */
+    int                 funcnest;       /**< depth of function calls */
+    int                 evalskip;       /**< set if we are skipping commands */
+    int                 skipcount;      /**< number of levels to skip */
+    int                 loopnest;       /**< current loop nesting level */
+    int                 commandnamemalloc; /**< Set if commandname is malloc'ed (only subshells). */
+
+    /* expand.c */
+    char               *expdest;        /**< output of current string (stack) */
+    struct nodelist    *argbackq;       /**< list of back quote expressions */
+    struct ifsregion    ifsfirst;       /**< first struct in list of ifs regions */
+    struct ifsregion   *ifslastp;       /**< last struct in list */
+    struct arglist      exparg;         /**< holds expanded arg list (stack) */
+    char               *expdir;         /**< Used by expandmeta. */
+
+    /* exec.h */
+    const char         *pathopt;        /**< set by padvance */
+
+    /* exec.c */
+    struct tblentry    *cmdtable[CMDTABLESIZE];
+    int                 builtinloc/* = -1*/;    /**< index in path of %builtin, or -1 */
+
+    /* input.h */
+    int                 plinno/* = 1 */;/**< input line number */
+    int                 parsenleft;     /**< number of characters left in input buffer */
+    char               *parsenextc;     /**< next character in input buffer */
+    int                 init_editline/* = 0 */;     /**< 0 == not setup, 1 == OK, -1 == failed */
+
+    /* input.c */
+    int                 parselleft;     /**< copy of parsefile->lleft */
+    struct parsefile    basepf;         /**< top level input file */
+    char                basebuf[BUFSIZ];/**< buffer for top level input file */
+    struct parsefile   *parsefile/* = &basepf*/;    /**< current input file */
+#ifndef SMALL
+    EditLine           *el;             /**< cookie for editline package */
+#endif
+
+    /* jobs.h */
+    shpid               backgndpid/* = -1 */;   /**< pid of last background process */
+    int                 job_warning;    /**< user was warned about stopped jobs */
+
+    /* jobs.c */
+    struct job         *jobtab;         /**< array of jobs */
+    int                 njobs;          /**< size of array */
+    int                 jobs_invalid;   /**< set in child */
+    shpid               initialpgrp;    /**< pgrp of shell on invocation */
+    int                 curjob/* = -1*/;/**< current job */
+    int                 ttyfd/* = -1*/;
+    int                 jobctl;         /**< job control enabled / disabled */
+    char               *cmdnextc;
+    int                 cmdnleft;
+
+
+    /* mail.c */
+#define MAXMBOXES 10
+    int                 nmboxes;        /**< number of mailboxes */
+    time_t              mailtime[MAXMBOXES]; /**< times of mailboxes */
+
+    /* main.h */
+    shpid               rootpid;        /**< pid of main shell. */
+    int                 rootshell;      /**< true if we aren't a child of the main shell. */
+    struct shinstance  *psh_rootshell;  /**< The root shell pointer. (!rootshell) */
+
+    /* memalloc.h */
+    char               *stacknxt/* = stackbase.space*/;
+    int                 stacknleft/* = MINSIZE*/;
+    int                 sstrnleft;
+    int                 herefd/* = -1 */;
+
+    /* memalloc.c */
+    struct stack_block  stackbase;
+    struct stack_block *stackp/* = &stackbase*/;
+    struct stackmark   *markp;
+
+#ifdef KASH_SEPARATE_PARSER_ALLOCATOR
+    pstack_block       *curpstack;      /**< The pstack entry we're currently allocating from (NULL when not in parse.c). */
+    pstack_block      **pstack;         /**< Stack of parsed stuff. */
+    unsigned            pstacksize;     /**< Number of entries in pstack. */
+    unsigned            pstackalloced;  /**< The allocated size of pstack. */
+    pstack_block       *freepstack;     /**< One cached pstack entry (lots of parsecmd calls). */
+#endif
+
+    /* myhistedit.h */
+    int                 displayhist;
+#ifndef SMALL
+    History            *hist;
+    EditLine           *el;
+#endif
+
+    /* output.h */
+    struct output       output;
+    struct output       errout;
+    struct output       memout;
+    struct output      *out1;
+    struct output      *out2;
+
+    /* output.c */
+#define OUTBUFSIZ BUFSIZ
+#define MEM_OUT -3                      /**< output to dynamically allocated memory */
+
+    /* options.h */
+    struct optent       optlist[NOPTS];
+    char               *minusc;         /**< argument to -c option */
+    char               *arg0;           /**< $0 */
+    struct shparam      shellparam;     /**< $@ */
+    char              **argptr;         /**< argument list for builtin commands */
+    char               *optionarg;      /**< set by nextopt */
+    char               *optptr;         /**< used by nextopt */
+    char              **orgargv;        /**< The original argument vector (for cleanup). */
+    int                 arg0malloc;     /**< Indicates whether arg0 was allocated or is part of orgargv. */
+
+    /* parse.h */
+    int                 tokpushback;
+    int                 whichprompt;    /**< 1 == PS1, 2 == PS2 */
+
+    /* parser.c */
+    int                 noalias/* = 0*/;/**< when set, don't handle aliases */
+    struct heredoc     *heredoclist;    /**< list of here documents to read */
+    int                 parsebackquote; /**< nonzero if we are inside backquotes */
+    int                 doprompt;       /**< if set, prompt the user */
+    int                 needprompt;     /**< true if interactive and at start of line */
+    int                 lasttoken;      /**< last token read */
+    char               *wordtext;       /**< text of last word returned by readtoken */
+    int                 checkkwd;       /**< 1 == check for kwds, 2 == also eat newlines */
+    struct nodelist    *backquotelist;
+    union node         *redirnode;
+    struct heredoc     *heredoc;
+    int                 quoteflag;      /**< set if (part of) last token was quoted */
+    int                 startlinno;     /**< line # where last token started */
+
+    /* redir.c */
+    struct redirtab    *redirlist;
+    int                 fd0_redirected/* = 0*/;
+    redirexpfnames     *expfnames;      /**< Expanded filenames for current redirection setup. */
+
+    /* show.c */
+    char                tracebuf[1024];
+    size_t              tracepos;
+    int                 tracefd;
+
+    /* trap.h */
+    int                 pendingsigs;    /**< indicates some signal received */
+
+    /* trap.c */
+    char                gotsig[NSIG];   /**< indicates specified signal received */
+    char               *trap[NSIG+1];   /**< trap handler commands */
+    char                sigmode[NSIG];  /**< current value of signal */
+
+    /* var.h */
+    struct localvar    *localvars;
+    struct var          vatty;
+    struct var          vifs;
+    struct var          vmail;
+    struct var          vmpath;
+    struct var          vpath;
+#ifdef _MSC_VER
+    struct var          vpath2;
+#endif
+    struct var          vps1;
+    struct var          vps2;
+    struct var          vps4;
+#ifndef SMALL
+    struct var          vterm;
+    struct var          vhistsize;
+#endif
+    struct var          voptind;
+#ifdef PC_OS2_LIBPATHS
+    struct var          libpath_vars[4];
+#endif
+#ifdef SMALL
+# define VTABSIZE 39
+#else
+# define VTABSIZE 517
+#endif
+    struct var         *vartab[VTABSIZE];
+
+    /* builtins.h */
+
+    /* bltin/test.c */
+    char              **t_wp;
+    struct t_op const  *t_wp_op;
+};
+
+extern void sh_init_globals(void);
+extern shinstance *sh_create_root_shell(char **, char **);
+extern shinstance *sh_create_child_shell(shinstance *);
+
+/* environment & pwd.h */
+char *sh_getenv(shinstance *, const char *);
+char **sh_environ(shinstance *);
+const char *sh_gethomedir(shinstance *, const char *);
+
+/* signals */
+#define SH_SIG_UNK ((shsig_t)(intptr_t)-199)
+#define SH_SIG_DFL ((shsig_t)(intptr_t)SIG_DFL)
+#define SH_SIG_IGN ((shsig_t)(intptr_t)SIG_IGN)
+#define SH_SIG_ERR ((shsig_t)(intptr_t)SIG_ERR)
+#ifdef _MSC_VER
+#   define SA_RESTART       0x02
+#   define SIG_BLOCK         1
+#   define SIG_UNBLOCK       2
+#   define SIG_SETMASK       3
+
+#   define SIGHUP            1          /* _SIGHUP_IGNORE */
+/*# define SIGINT            2 */
+#   define SIGQUIT           3          /* _SIGQUIT_IGNORE */
+/*# define SIGILL            4 */
+/*# define SIGFPE            8 */
+/*# define SIGSEGV          11 */
+#   define SIGPIPE          13          /* _SIGPIPE_IGNORE */
+/*# define SIGTERM          15 */
+#   define SIGTTIN          16          /* _SIGIOINT_IGNORE */
+#   define SIGTSTP          17          /* _SIGSTOP_IGNORE */
+#   define SIGTTOU          18
+#   define SIGCONT          20
+/*# define SIGBREAK         21 */
+/*# define SIGABRT          22 */
+const char *strsignal(int iSig);
+#endif /* _MSC_VER */
+#ifndef HAVE_SYS_SIGNAME
+extern const char * const sys_signame[NSIG];
+#endif
+
+int sh_sigaction(shinstance *, int, const struct shsigaction *, struct shsigaction *);
+shsig_t sh_signal(shinstance *, int, shsig_t);
+int sh_siginterrupt(shinstance *, int, int);
+void sh_sigemptyset(shsigset_t *);
+void sh_sigfillset(shsigset_t *);
+void sh_sigaddset(shsigset_t *, int);
+void sh_sigdelset(shsigset_t *, int);
+int sh_sigismember(shsigset_t const *, int);
+int sh_sigprocmask(shinstance *, int, shsigset_t const *, shsigset_t *);
+SH_NORETURN_1 void sh_abort(shinstance *) SH_NORETURN_2;
+void sh_raise_sigint(shinstance *);
+int sh_kill(shinstance *, shpid, int);
+int sh_killpg(shinstance *, shpid, int);
+
+/* times */
+#include <time.h>
+#ifdef _MSC_VER
+    typedef struct shtms
+    {
+        clock_t tms_utime;
+        clock_t tms_stime;
+        clock_t tms_cutime;
+        clock_t tms_cstime;
+    } shtms;
+#else
+#   include <sys/times.h>
+    typedef struct tms shtms;
+#endif
+clock_t sh_times(shinstance *, shtms *);
+int sh_sysconf_clk_tck(void);
+
+/* wait / process */
+int sh_add_child(shinstance *psh, shpid pid, void *hChild, struct shsubshellstatus *sts);
+#ifdef _MSC_VER
+#   include <process.h>
+#   define WNOHANG         1       /* Don't hang in wait. */
+#   define WUNTRACED       2       /* Tell about stopped, untraced children. */
+#   define WCONTINUED      4       /* Report a job control continued process. */
+#   define _W_INT(w)       (*(int *)&(w))  /* Convert union wait to int. */
+#   define WCOREFLAG       0200
+#   define _WSTATUS(x)     (_W_INT(x) & 0177)
+#   define _WSTOPPED       0177            /* _WSTATUS if process is stopped */
+#   define WIFSTOPPED(x)   (_WSTATUS(x) == _WSTOPPED)
+#   define WSTOPSIG(x)     (_W_INT(x) >> 8)
+#   define WIFSIGNALED(x)  (_WSTATUS(x) != 0 && !WIFSTOPPED(x) && !WIFCONTINUED(x)) /* bird: made GLIBC tests happy. */
+#   define WTERMSIG(x)     (_WSTATUS(x))
+#   define WIFEXITED(x)    (_WSTATUS(x) == 0)
+#   define WEXITSTATUS(x)  (_W_INT(x) >> 8)
+#   define WIFCONTINUED(x) (x == 0x13)     /* 0x13 == SIGCONT */
+#   define WCOREDUMP(x)    (_W_INT(x) & WCOREFLAG)
+#   define W_EXITCODE(ret, sig)    ((ret) << 8 | (sig))
+#   define W_STOPCODE(sig)         ((sig) << 8 | _WSTOPPED)
+#else
+#   include <sys/wait.h>
+#   ifdef __HAIKU__
+#       define WCOREDUMP(x) WIFCORED(x)
+#   endif
+#endif
+#ifdef SH_FORKED_MODE
+shpid sh_fork(shinstance *);
+#else
+shpid sh_thread_start(shinstance *pshparent, shinstance *pshchild, int (*thread)(shinstance *, void *), void *arg);
+#endif
+shpid sh_waitpid(shinstance *, shpid, int *, int);
+SH_NORETURN_1 void sh__exit(shinstance *, int) SH_NORETURN_2;
+int sh_execve(shinstance *, const char *, const char * const*, const char * const *);
+uid_t sh_getuid(shinstance *);
+uid_t sh_geteuid(shinstance *);
+gid_t sh_getgid(shinstance *);
+gid_t sh_getegid(shinstance *);
+shpid sh_getpid(shinstance *);
+shpid sh_getpgrp(shinstance *);
+shpid sh_getpgid(shinstance *, shpid);
+int sh_setpgid(shinstance *, shpid, shpid);
+
+/* tc* */
+shpid sh_tcgetpgrp(shinstance *, int);
+int sh_tcsetpgrp(shinstance *, int, shpid);
+
+/* sys/resource.h */
+#ifdef _MSC_VER
+    typedef int64_t shrlim_t;
+    typedef struct shrlimit
+    {
+        shrlim_t   rlim_cur;
+        shrlim_t   rlim_max;
+    } shrlimit;
+#   define RLIMIT_CPU     0
+#   define RLIMIT_FSIZE   1
+#   define RLIMIT_DATA    2
+#   define RLIMIT_STACK   3
+#   define RLIMIT_CORE    4
+#   define RLIMIT_RSS     5
+#   define RLIMIT_MEMLOCK 6
+#   define RLIMIT_NPROC   7
+#   define RLIMIT_NOFILE  8
+#   define RLIMIT_SBSIZE  9
+#   define RLIMIT_VMEM    10
+#   define RLIM_NLIMITS   11
+#   define RLIM_INFINITY  (0x7fffffffffffffffLL)
+#else
+    typedef rlim_t          shrlim_t;
+    typedef struct rlimit   shrlimit;
+#endif
+int sh_getrlimit(shinstance *, int, shrlimit *);
+int sh_setrlimit(shinstance *, int, const shrlimit *);
+
+/* string.h */
+const char *sh_strerror(shinstance *, int);
+
+#ifdef DEBUG
+# define TRACE2(param)	trace param
+# define TRACE2V(param)	tracev param
+#else
+# define TRACE2(param)  do { } while (0)
+# define TRACE2V(param) do { } while (0)
+#endif
+
+#endif
diff --git a/src/kash/show.c b/src/kash/show.c
new file mode 100644
index 0000000..e516f30
--- /dev/null
+++ b/src/kash/show.c
@@ -0,0 +1,534 @@
+/*	$NetBSD: show.c,v 1.26 2003/11/14 10:46:13 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)show.c	8.3 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: show.c,v 1.26 2003/11/14 10:46:13 dsl Exp $");
+#endif /* not lint */
+#endif
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+
+#include "shell.h"
+#include "parser.h"
+#include "nodes.h"
+#include "mystring.h"
+#include "show.h"
+#include "options.h"
+#include "shinstance.h"
+
+
+#ifdef DEBUG
+static void shtree(union node *, int, char *, FILE*);
+static void shcmd(union node *, FILE *);
+static void sharg(union node *, FILE *);
+static void indent(int, char *, FILE *);
+static void trstring(shinstance *, char *);
+
+
+void
+showtree(shinstance *psh, union node *n)
+{
+	trputs(psh, "showtree called\n");
+	shtree(n, 1, NULL, stdout);
+}
+
+
+static void
+shtree(union node *n, int ind, char *pfx, FILE *fp)
+{
+	struct nodelist *lp;
+	const char *s;
+
+	if (n == NULL)
+		return;
+
+	indent(ind, pfx, fp);
+	switch(n->type) {
+	case NSEMI:
+		s = "; ";
+		goto binop;
+	case NAND:
+		s = " && ";
+		goto binop;
+	case NOR:
+		s = " || ";
+binop:
+		shtree(n->nbinary.ch1, ind, NULL, fp);
+	   /*    if (ind < 0) */
+			fputs(s, fp);
+		shtree(n->nbinary.ch2, ind, NULL, fp);
+		break;
+	case NCMD:
+		shcmd(n, fp);
+		if (ind >= 0)
+			putc('\n', fp);
+		break;
+	case NPIPE:
+		for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) {
+			shcmd(lp->n, fp);
+			if (lp->next)
+				fputs(" | ", fp);
+		}
+		if (n->npipe.backgnd)
+			fputs(" &", fp);
+		if (ind >= 0)
+			putc('\n', fp);
+		break;
+	default:
+		fprintf(fp, "<node type %d>", n->type);
+		if (ind >= 0)
+			putc('\n', fp);
+		break;
+	}
+}
+
+
+
+static void
+shcmd(union node *cmd, FILE *fp)
+{
+	union node *np;
+	int first;
+	const char *s;
+	int dftfd;
+
+	first = 1;
+	for (np = cmd->ncmd.args ; np ; np = np->narg.next) {
+		if (! first)
+			putchar(' ');
+		sharg(np, fp);
+		first = 0;
+	}
+	for (np = cmd->ncmd.redirect ; np ; np = np->nfile.next) {
+		if (! first)
+			putchar(' ');
+		switch (np->nfile.type) {
+			case NTO:	s = ">";  dftfd = 1; break;
+			case NCLOBBER:	s = ">|"; dftfd = 1; break;
+			case NAPPEND:	s = ">>"; dftfd = 1; break;
+			case NTOFD:	s = ">&"; dftfd = 1; break;
+			case NFROM:	s = "<";  dftfd = 0; break;
+			case NFROMFD:	s = "<&"; dftfd = 0; break;
+			case NFROMTO:	s = "<>"; dftfd = 0; break;
+			default:  	s = "*error*"; dftfd = 0; break;
+		}
+		if (np->nfile.fd != dftfd)
+			fprintf(fp, "%d", np->nfile.fd);
+		fputs(s, fp);
+		if (np->nfile.type == NTOFD || np->nfile.type == NFROMFD) {
+			fprintf(fp, "%d", np->ndup.dupfd);
+		} else {
+			sharg(np->nfile.fname, fp);
+		}
+		first = 0;
+	}
+}
+
+
+
+static void
+sharg(union node *arg, FILE *fp)
+{
+	char *p;
+	struct nodelist *bqlist;
+	int subtype;
+
+	if (arg->type != NARG) {
+		printf("<node type %d>\n", arg->type);
+		abort();
+	}
+	bqlist = arg->narg.backquote;
+	for (p = arg->narg.text ; *p ; p++) {
+		switch (*p) {
+		case CTLESC:
+			putc(*++p, fp);
+			break;
+		case CTLVAR:
+			putc('$', fp);
+			putc('{', fp);
+			subtype = *++p;
+			if (subtype == VSLENGTH)
+				putc('#', fp);
+
+			while (*p != '=')
+				putc(*p++, fp);
+
+			if (subtype & VSNUL)
+				putc(':', fp);
+
+			switch (subtype & VSTYPE) {
+			case VSNORMAL:
+				putc('}', fp);
+				break;
+			case VSMINUS:
+				putc('-', fp);
+				break;
+			case VSPLUS:
+				putc('+', fp);
+				break;
+			case VSQUESTION:
+				putc('?', fp);
+				break;
+			case VSASSIGN:
+				putc('=', fp);
+				break;
+			case VSTRIMLEFT:
+				putc('#', fp);
+				break;
+			case VSTRIMLEFTMAX:
+				putc('#', fp);
+				putc('#', fp);
+				break;
+			case VSTRIMRIGHT:
+				putc('%', fp);
+				break;
+			case VSTRIMRIGHTMAX:
+				putc('%', fp);
+				putc('%', fp);
+				break;
+			case VSLENGTH:
+				break;
+			default:
+				printf("<subtype %d>", subtype);
+			}
+			break;
+		case CTLENDVAR:
+		     putc('}', fp);
+		     break;
+		case CTLBACKQ:
+		case CTLBACKQ|CTLQUOTE:
+			putc('$', fp);
+			putc('(', fp);
+			shtree(bqlist->n, -1, NULL, fp);
+			putc(')', fp);
+			break;
+		default:
+			putc(*p, fp);
+			break;
+		}
+	}
+}
+
+
+static void
+indent(int amount, char *pfx, FILE *fp)
+{
+	int i;
+
+	for (i = 0 ; i < amount ; i++) {
+		if (pfx && i == amount - 1)
+			fputs(pfx, fp);
+		putc('\t', fp);
+	}
+}
+#endif
+
+
+
+#ifdef DEBUG
+/*
+ * Debugging stuff.
+ */
+
+/** @def TRY_GET_PSH_OR_RETURN
+ * Make sure @a psh is valid, trying to fetch it from TLS
+ * if it's NULL and returning (void) if that fails. */
+# define TRY_GET_PSH_OR_RETURN(psh)  \
+	if (!(psh)) { \
+		(psh) = shthread_get_shell(); \
+		if (!(psh)) \
+			return; \
+	} else do { } while (0)
+
+/** @def RETURN_IF_NOT_TRACING
+ * Return if we're not tracing. */
+# define RETURN_IF_NOT_TRACING(psh) \
+   if (debug(psh) != 1 || psh->tracefd == -1) \
+   	return; \
+   else do	{} while (0)
+
+/* Flushes the tracebuf. */
+static void
+trace_flush(shinstance *psh)
+{
+	size_t pos = psh->tracepos;
+
+	if (pos > sizeof(psh->tracebuf)) {
+		char *end;
+		kHlpAssert(0);
+		end = memchr(psh->tracebuf, '\0', sizeof(psh->tracebuf));
+		pos = end ? end - &psh->tracebuf[0] : 0;
+	}
+
+	if (pos) {
+		int     s = errno;
+		char 	prefix[40];
+		size_t 	len;
+
+#ifdef SH_FORKED_MODE
+		len = sprintf(prefix, "[%" SHPID_PRI "] ", sh_getpid(psh));
+#else
+		shpid pid = sh_getpid(psh);
+		len = sprintf(prefix, "[%d/%d] ", SHPID_GET_PID(pid), SHPID_GET_TID(pid));
+#endif
+		shfile_write(&psh->fdtab, psh->tracefd, prefix, len);
+		shfile_write(&psh->fdtab, psh->tracefd, psh->tracebuf, pos);
+
+		psh->tracepos = 0;
+		psh->tracebuf[0] = '\0';
+
+		errno = s;
+	}
+}
+
+/* Adds a char to the trace buffer. */
+static void
+trace_char(shinstance *psh, int c)
+{
+	size_t pos = psh->tracepos;
+	if (pos >= sizeof(psh->tracebuf) - 1) {
+		trace_flush(psh);
+		pos = psh->tracepos;
+	}
+	psh->tracebuf[pos] = c;
+	psh->tracepos = pos + 1;
+	if (c == '\n')
+		trace_flush(psh);
+	else
+		psh->tracebuf[pos + 1] = '\0';
+}
+
+/* Add a string to the trace buffer. */
+static void
+trace_string(shinstance *psh, const char *str)
+{
+	/* push it out line by line. */
+	while (*str) {
+		/* find line/string length. */
+		size_t		pos;
+		size_t 		len;
+		const char *end = str;
+		int 		flush_it = 0;
+		while (*end) {
+			if (*end++ == '\n') {
+				flush_it = 1;
+				break;
+			}
+		}
+		len = end - str;
+
+		/* copy to the buffer */
+		pos = psh->tracepos;
+		if (pos + len <= sizeof(psh->tracebuf)) {
+			memcpy(&psh->tracebuf[pos], str, len);
+			psh->tracepos = pos + len;
+			if (flush_it)
+				trace_flush(psh);
+		} else {
+			/* it's too big for some reason... */
+			int s = errno;
+			trace_flush(psh);
+			shfile_write(&psh->fdtab, psh->tracefd, str, len);
+			if (!flush_it)
+				shfile_write(&psh->fdtab, psh->tracefd, "[too long]\n", sizeof( "[too long]\n") - 1);
+			errno = s;
+		}
+
+		/* advance */
+		str = end;
+	}
+}
+
+void
+trputc(shinstance *psh, int c)
+{
+	TRY_GET_PSH_OR_RETURN(psh);
+	RETURN_IF_NOT_TRACING(psh);
+
+	trace_char(psh, c);
+}
+
+void
+trace(shinstance *psh, const char *fmt, ...)
+{
+	va_list va;
+	char buf[2048];
+
+	TRY_GET_PSH_OR_RETURN(psh);
+	RETURN_IF_NOT_TRACING(psh);
+
+	va_start(va, fmt);
+#  ifdef _MSC_VER
+	_vsnprintf(buf, sizeof(buf), fmt, va);
+#  else
+	vsnprintf(buf, sizeof(buf), fmt, va);
+#  endif
+	va_end(va);
+	trace_string(psh, buf);
+}
+
+void
+tracev(shinstance *psh, const char *fmt, va_list va)
+{
+	char buf[2048];
+
+	TRY_GET_PSH_OR_RETURN(psh);
+	RETURN_IF_NOT_TRACING(psh);
+
+#  ifdef _MSC_VER
+	_vsnprintf(buf, sizeof(buf), fmt, va);
+#  else
+	vsnprintf(buf, sizeof(buf), fmt, va);
+#  endif
+	trace_string(psh, buf);
+}
+
+void
+trputs(shinstance *psh, const char *s)
+{
+	TRY_GET_PSH_OR_RETURN(psh);
+	RETURN_IF_NOT_TRACING(psh);
+
+	trace_string(psh, s);
+    trace_char(psh, '\n');
+}
+
+
+static void
+trstring(shinstance *psh, char *s)
+{
+	char *p;
+	char c;
+
+	TRY_GET_PSH_OR_RETURN(psh);
+	RETURN_IF_NOT_TRACING(psh);
+
+	trace_char(psh, '"');
+	for (p = s ; *p ; p++) {
+		switch (*p) {
+		case '\n':  c = 'n';  goto backslash;
+		case '\t':  c = 't';  goto backslash;
+		case '\r':  c = 'r';  goto backslash;
+		case '"':  c = '"';  goto backslash;
+		case '\\':  c = '\\';  goto backslash;
+		case CTLESC:  c = 'e';  goto backslash;
+		case CTLVAR:  c = 'v';  goto backslash;
+		case CTLVAR+CTLQUOTE:  c = 'V';  goto backslash;
+		case CTLBACKQ:  c = 'q';  goto backslash;
+		case CTLBACKQ+CTLQUOTE:  c = 'Q';  goto backslash;
+backslash:	  trace_char(psh, '\\');
+			trace_char(psh, c);
+			break;
+		default:
+			if (*p >= ' ' && *p <= '~')
+				trace_char(psh, *p);
+			else {
+				trace_char(psh, '\\');
+				trace_char(psh, *p >> 6 & 03);
+				trace_char(psh, *p >> 3 & 07);
+				trace_char(psh, *p & 07);
+			}
+			break;
+		}
+	}
+	trace_char(psh, '"');
+}
+
+void
+trargs(shinstance *psh, char **ap)
+{
+	TRY_GET_PSH_OR_RETURN(psh);
+	RETURN_IF_NOT_TRACING(psh);
+
+	while (*ap) {
+		trstring(psh, *ap++);
+		if (*ap)
+			trace_char(psh, ' ');
+		else
+			trace_char(psh, '\n');
+	}
+}
+
+void
+opentrace(shinstance *psh)
+{
+    static const char s[] = "./trace";
+
+	TRY_GET_PSH_OR_RETURN(psh);
+	if (debug(psh) != 1) {
+        /* disabled */
+		if (psh->tracefd != -1) {
+			trace_flush(psh);
+			shfile_close(&psh->fdtab, psh->tracefd);
+			psh->tracefd = -1;
+		}
+		return;
+	}
+    /* else: (re-)enabled */
+
+	if (psh->tracefd != -1)
+        return;
+
+	psh->tracefd = shfile_open(&psh->fdtab, s, O_APPEND | O_RDWR | O_CREAT, 0600);
+	if (psh->tracefd != -1) {
+		/* relocate it */
+		int want_fd = 199;
+		while (want_fd > 10)
+		{
+			int fd2 = shfile_fcntl(&psh->fdtab, psh->tracefd, F_DUPFD, want_fd);
+			if (fd2 != -1) {
+				shfile_close(&psh->fdtab, psh->tracefd);
+				psh->tracefd = fd2;
+				break;
+			}
+			want_fd = ((want_fd + 1) / 2) - 1;
+		}
+		shfile_cloexec(&psh->fdtab, psh->tracefd, 1 /* close it */);
+		shfile_set_trace(&psh->fdtab, psh->tracefd);
+	}
+	if (psh->tracefd == -1) {
+		fprintf(stderr, "Can't open %s\n", s);
+		debug(psh) = 0;
+		return;
+	}
+	trace_string(psh, "Tracing started.\n");
+}
+
+#endif /* DEBUG */
+
diff --git a/src/kash/show.h b/src/kash/show.h
new file mode 100644
index 0000000..7e4c3d4
--- /dev/null
+++ b/src/kash/show.h
@@ -0,0 +1,50 @@
+/*	$NetBSD: show.h,v 1.7 2003/08/07 09:05:38 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1995
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)show.h	1.1 (Berkeley) 5/4/95
+ */
+
+#ifndef ___show_h
+#define ___show_h
+
+#include <stdarg.h>
+
+union node;
+void showtree(struct shinstance *, union node *);
+#ifdef DEBUG
+void trace(struct shinstance *, const char *, ...);
+void tracev(struct shinstance *, const char *, va_list);
+void trargs(struct shinstance *, char **);
+void trputc(struct shinstance *, int);
+void trputs(struct shinstance *, const char *);
+void opentrace(struct shinstance *);
+#endif
+
+#endif
diff --git a/src/kash/shthread.c b/src/kash/shthread.c
new file mode 100644
index 0000000..3a86801
--- /dev/null
+++ b/src/kash/shthread.c
@@ -0,0 +1,151 @@
+/* $Id: shthread.c 3505 2021-12-15 22:53:57Z bird $ */
+/** @file
+ *
+ * Shell Thread Management.
+ *
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include "shthread.h"
+#include "shinstance.h"
+
+#if K_OS == K_OS_WINDOWS
+# include <Windows.h>
+#elif K_OS == K_OS_OS2
+# include <InnoTekLIBC/FastInfoBlocks.h>
+# include <InnoTekLIBC/thread.h>
+#else
+# include <pthread.h>
+#endif
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+#if K_OS == K_OS_WINDOWS
+static DWORD sh_tls = TLS_OUT_OF_INDEXES;
+#elif K_OS == K_OS_OS2
+static int sh_tls = -1;
+#else
+static int sh_tls_inited = 0;
+static pthread_key_t sh_tls;
+#endif
+
+
+/**
+ * Stores the shell instance pointer in a TLS entry.
+ *
+ * This will allocate the TLS entry on the first call. We assume
+ * there will no be races at that time.
+ *
+ * @param   psh     The shell instance.
+ */
+void shthread_set_shell(struct shinstance *psh)
+{
+#if K_OS == K_OS_WINDOWS
+    if (sh_tls == TLS_OUT_OF_INDEXES)
+    {
+        sh_tls = TlsAlloc();
+        kHlpAssert(sh_tls != TLS_OUT_OF_INDEXES);
+    }
+    if (!TlsSetValue(sh_tls, psh))
+        kHlpAssert(0);
+
+#elif K_OS == K_OS_OS2
+    if (sh_tls == -1)
+    {
+        sh_tls = __libc_TLSAlloc();
+        kHlpAssert(sh_tls != -1);
+    }
+    if (__libc_TLSSet(sh_tls, psh) == -1)
+        kHlpAssert(0);
+#else
+    if (!sh_tls_inited)
+    {
+        if (pthread_key_create(&sh_tls, NULL) != 0)
+            kHlpAssert(0);
+        sh_tls_inited = 1;
+    }
+    if (pthread_setspecific(sh_tls, psh) != 0)
+        kHlpAssert(0);
+#endif
+}
+
+/**
+ * Get the shell instance pointer from TLS.
+ *
+ * @returns The shell instance.
+ */
+struct shinstance *shthread_get_shell(void)
+{
+    shinstance *psh;
+#if K_OS == K_OS_WINDOWS
+    psh = (shinstance *)TlsGetValue(sh_tls);
+#elif K_OS == K_OS_OS2
+    psh = (shinstance *)__libc_TLSGet(sh_tls);
+#else
+    psh = (shinstance *)pthread_getspecific(sh_tls);
+#endif
+    return psh;
+}
+
+
+/**
+ * Sets the name of the current thread if supported by the OS.
+ */
+void shthread_set_name(const char *name)
+{
+#if K_OS == K_OS_WINDOWS
+    typedef BOOL (WINAPI * PFNSETTHREADDESCRIPTION)(HANDLE, WCHAR *);
+    static KBOOL volatile                   s_initialized             = K_FALSE;
+    static PFNSETTHREADDESCRIPTION volatile s_pfnSetThreadDescription = NULL;
+    PFNSETTHREADDESCRIPTION                 pfnSetThreadDescription   = s_pfnSetThreadDescription;
+    WCHAR                                   wszName[32];
+    size_t                                  i;
+
+    /* Get the function pointer, return if not available. */
+    if (pfnSetThreadDescription)
+    { }
+    else if (s_initialized)
+        return;
+    else
+    {
+        pfnSetThreadDescription = (PFNSETTHREADDESCRIPTION)GetProcAddress(GetModuleHandleW(L"KERNEL32.DLL"),
+                                                                          "SetThreadDescription");
+        s_pfnSetThreadDescription = pfnSetThreadDescription;
+        s_initialized = K_TRUE;
+        if (!pfnSetThreadDescription)
+            return;
+    }
+
+    /* Convert the name to UTF-16 and call the API. */
+    i = strlen(name);
+    kHlpAssertStmt(i < K_ELEMENTS(wszName), i = K_ELEMENTS(wszName));
+    wszName[i] = '\0';
+    while (i-- > 0)
+        wszName[i] = name[i];
+
+    pfnSetThreadDescription(GetCurrentThread(), wszName);
+#else
+    K_NOREF(name);
+#endif
+}
+
diff --git a/src/kash/shthread.h b/src/kash/shthread.h
new file mode 100644
index 0000000..046cee3
--- /dev/null
+++ b/src/kash/shthread.h
@@ -0,0 +1,89 @@
+/* $Id: shthread.h 3515 2021-12-16 12:54:03Z bird $ */
+/** @file
+ *
+ * Shell thread methods.
+ *
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef ___shthread_h___
+#define ___shthread_h___
+
+#include "shtypes.h"
+
+typedef union shmtx
+{
+    char b[64];
+    KU64 au64[64/sizeof(KU64)];
+    void *aptrs[64/sizeof(void *)];
+} shmtx;
+
+/** Magic mutex value (final u64).
+ * This is used to detect whether the mutex has been initialized or not,
+ * allowing shmtx_delete to be called more than once without doing harm.
+ * @internal */
+#define SHMTX_MAGIC        KU64_C(0x8888000019641018) /**< Charles Stross */
+/** Index into shmtx::au64 of the SHMTX_MAGIC value.
+ * @internal */
+#define SHMTX_MAGIC_IDX    (sizeof(shmtx) / sizeof(KU64) - 1)
+
+typedef struct shmtxtmp { int i; } shmtxtmp;
+
+typedef uintptr_t shtid;
+
+void shthread_set_shell(struct shinstance *);
+struct shinstance *shthread_get_shell(void);
+void shthread_set_name(const char *name);
+
+int shmtx_init(shmtx *pmtx);
+void shmtx_delete(shmtx *pmtx);
+void shmtx_enter(shmtx *pmtx, shmtxtmp *ptmp);
+void shmtx_leave(shmtx *pmtx, shmtxtmp *ptmp);
+
+
+K_INLINE unsigned sh_atomic_inc(KU32 volatile *valuep)
+{
+#ifdef _MSC_VER
+    return _InterlockedIncrement((long *)valuep);
+#elif defined(__GNUC__) && (K_ARCH == K_ARCH_AMD64 || K_ARCH == K_ARCH_X86_32)
+    unsigned uRet;
+    __asm__ __volatile__("lock; xaddl %1, %0" : "=m" (*valuep), "=r" (uRet) : "m" (*valuep), "1" (1) : "memory", "cc");
+    return uRet + 1;
+#else
+    return __sync_add_and_fetch(valuep, 1);
+#endif
+}
+
+K_INLINE unsigned sh_atomic_dec(unsigned volatile *valuep)
+{
+#ifdef _MSC_VER
+    return _InterlockedDecrement((long *)valuep);
+#elif defined(__GNUC__) && (K_ARCH == K_ARCH_AMD64 || K_ARCH == K_ARCH_X86_32)
+    unsigned uRet;
+    __asm__ __volatile__("lock; xaddl %1, %0" : "=m" (*valuep), "=r" (uRet) : "m" (*valuep), "1" (-1) : "memory", "cc");
+    return uRet - 1;
+#else
+    return __sync_sub_and_fetch(valuep, 1);
+#endif
+}
+
+#endif
+
diff --git a/src/kash/shtypes.h b/src/kash/shtypes.h
new file mode 100644
index 0000000..f5c8ff0
--- /dev/null
+++ b/src/kash/shtypes.h
@@ -0,0 +1,150 @@
+/* $Id: shtypes.h 3477 2020-09-17 21:52:16Z bird $ */
+/** @file
+ * Wrapper for missing types and such.
+ */
+
+/*
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef ___shtypes_h___
+#define ___shtypes_h___
+
+#include "k/kTypes.h" /* Use these, not the ones below. */
+#include "k/kHlpAssert.h"
+
+#include <sys/types.h>
+#include <stdlib.h>
+#ifdef __HAIKU__
+# include <posix/signal.h> /* silly */
+#elif !defined(_MSC_VER)
+# include <sys/signal.h>
+#endif
+
+#ifdef _MSC_VER
+typedef signed char     int8_t;
+typedef unsigned char   uint8_t;
+typedef short           int16_t;
+typedef unsigned short  uint16_t;
+typedef int             int32_t;
+typedef unsigned int    uint32_t;
+typedef _int64          int64_t;
+typedef unsigned _int64 uint64_t;
+# if _MSC_VER >= 1400
+#  include <io.h> /* intptr_t and uintptr_t */
+# else
+typedef KIPTR           intptr_t;
+typedef KUPTR           uintptr_t;
+# endif
+
+#define INT16_C(c)      (c)
+#define INT32_C(c)      (c)
+#define INT64_C(c)      (c ## LL)
+
+#define UINT8_C(c)      (c)
+#define UINT16_C(c)     (c)
+#define UINT32_C(c)     (c ## U)
+#define UINT64_C(c)     (c ## ULL)
+
+#define INTMAX_C(c)     (c ## LL)
+#define UINTMAX_C(c)    (c ## ULL)
+
+#undef  INT8_MIN
+#define INT8_MIN        (-0x7f-1)
+#undef  INT16_MIN
+#define INT16_MIN       (-0x7fff-1)
+#undef  INT32_MIN
+#define INT32_MIN       (-0x7fffffff-1)
+#undef  INT64_MIN
+#define INT64_MIN       (-0x7fffffffffffffffLL-1)
+
+#undef  INT8_MAX
+#define INT8_MAX        0x7f
+#undef  INT16_MAX
+#define INT16_MAX       0x7fff
+#undef  INT32_MAX
+#define INT32_MAX       0x7fffffff
+#undef  INT64_MAX
+#define INT64_MAX       0x7fffffffffffffffLL
+
+#undef  UINT8_MAX
+#define UINT8_MAX       0xff
+#undef  UINT16_MAX
+#define UINT16_MAX      0xffff
+#undef  UINT32_MAX
+#define UINT32_MAX      0xffffffffU
+#undef  UINT64_MAX
+#define UINT64_MAX      0xffffffffffffffffULL
+
+typedef int             pid_t;
+typedef unsigned short  uid_t;
+typedef unsigned short  gid_t;
+typedef int             mode_t;
+typedef intptr_t        ssize_t;
+
+#else
+# include <stdint.h>
+#endif
+
+struct shinstance;
+typedef struct shinstance shinstance;
+
+#ifdef _MSC_VER
+typedef uint32_t shsigset_t;
+#else
+typedef sigset_t shsigset_t;
+#endif
+
+typedef void (*shsig_t)(shinstance *, int);
+typedef struct shsigaction
+{
+    shsig_t     sh_handler;
+    shsigset_t  sh_mask;
+    int         sh_flags;
+} shsigaction_t;
+
+/* SH_NORETURN_1 must be both on prototypes and definitions, while
+   SH_NORETURN_2 should at least be on the prototype. */
+#ifdef _MSC_VER
+# define SH_NORETURN_1 __declspec(noreturn)
+# define SH_NORETURN_2
+#else
+# define SH_NORETURN_1
+# define SH_NORETURN_2 __attribute__((__noreturn__))
+#endif
+
+/** @name Extra wide pid_t so we can safely add a sub-pid to the top.
+ * @{ */
+#ifndef SH_FORKED_MODE
+typedef KI64 shpid;
+# define SHPID_MAKE(pid, tid)       ((shpid)(KU32)(pid) | (shpid)(KU32)(tid) << 32)
+# define SHPID_GET_PID(shpid)       ((pid_t)(KU32)(shpid))
+# define SHPID_GET_TID(shpid)       ((pid_t)((shpid) >> 32))
+# define SHPID_PRI                  KI64_PRI
+#else
+typedef pid_t shpid;
+# define SHPID_GET_PID(shpid)       (shpid)
+# define SHPID_PRI                  KI32_PRI
+#endif
+/** @}  */
+
+#endif
+
diff --git a/src/kash/strlcpy.c b/src/kash/strlcpy.c
new file mode 100644
index 0000000..7a1d0df
--- /dev/null
+++ b/src/kash/strlcpy.c
@@ -0,0 +1,72 @@
+/*	$OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp $	*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if 0
+#if defined(LIBC_SCCS) && !defined(lint)
+static char *rcsid = "$OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp $");
+#include <sys/cdefs.h>
+//__FBSDID("$FreeBSD: src/lib/libc/string/strlcpy.c,v 1.7 2003/05/01 19:03:14 nectar Exp $");
+#endif /* LIBC_SCCS and not lint */
+#endif
+
+#include <sys/types.h>
+#include <string.h>
+
+/*
+ * Copy src to string dst of size siz.  At most siz-1 characters
+ * will be copied.  Always NUL terminates (unless siz == 0).
+ * Returns strlen(src); if retval >= siz, truncation occurred.
+ */
+size_t strlcpy(dst, src, siz)
+	char *dst;
+	const char *src;
+	size_t siz;
+{
+	char *d = dst;
+	const char *s = src;
+	size_t n = siz;
+
+	/* Copy as many bytes as will fit */
+	if (n != 0 && --n != 0) {
+		do {
+			if ((*d++ = *s++) == 0)
+				break;
+		} while (--n != 0);
+	}
+
+	/* Not enough room in dst, add NUL and traverse rest of src */
+	if (n == 0) {
+		if (siz != 0)
+			*d = '\0';		/* NUL-terminate dst */
+		while (*s++)
+			;
+	}
+
+	return(s - src - 1);	/* count does not include NUL */
+}
diff --git a/src/kash/strsignal.c b/src/kash/strsignal.c
new file mode 100644
index 0000000..6bcd9db
--- /dev/null
+++ b/src/kash/strsignal.c
@@ -0,0 +1,14 @@
+/*
+ * Fake strsignal (for Windows/MSC).
+ */
+
+#include "shinstance.h" /* for MSC */
+#include <string.h>
+
+const char *strsignal(int iSig)
+{
+    if (iSig < NSIG)
+	return sys_signame[iSig];
+    return NULL;
+}
+
diff --git a/src/kash/syntax.c b/src/kash/syntax.c
new file mode 100644
index 0000000..d1753ef
--- /dev/null
+++ b/src/kash/syntax.c
@@ -0,0 +1,209 @@
+/*	$NetBSD: syntax.c,v 1.1 2004/01/17 17:38:12 dsl Exp $	*/
+
+#include "shell.h"
+#include "syntax.h"
+#include "parser.h"
+#include "shinstance.h"
+
+#ifdef _MSC_VER /* doesn't implement the fancy initializers I think... */
+
+char basesyntax[257] = {CSHEOF};
+char dqsyntax[257] = {CSHEOF};
+char sqsyntax[257] = {CSHEOF};
+char arisyntax[257] = {CSHEOF};
+char is_type[257] = {0};
+
+void init_syntax(void)
+{
+    char *tab;
+    int i;
+
+#define ndx(ch) (ch + 1 - CHAR_MIN)
+#define set(ch, val) tab[ndx(ch)] = val
+#define set_range(s, e, val) for (i = ndx(s); i <= ndx(e); i++) tab[i] = val
+
+    /*basesyntax*/
+    tab = basesyntax;
+    set_range(CTL_FIRST, CTL_LAST, CCTL);
+    set('\n', CNL);
+    set('\\', CBACK);
+    set('\'', CSQUOTE);
+    set('"', CDQUOTE);
+    set('`', CBQUOTE);
+    set('$', CVAR);
+    set('}', CENDVAR);
+    set('<', CSPCL);
+    set('>', CSPCL);
+    set('(', CSPCL);
+    set(')', CSPCL);
+    set(';', CSPCL);
+    set('&', CSPCL);
+    set('|', CSPCL);
+    set(' ', CSPCL);
+    set('\t', CSPCL);
+
+    tab = dqsyntax;
+    set_range(CTL_FIRST, CTL_LAST, CCTL);
+    set('\n', CNL);
+    set('\\', CBACK);
+    set('"', CDQUOTE);
+    set('`', CBQUOTE);
+    set('$', CVAR);
+    set('}', CENDVAR);
+    /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */
+    set('!', CCTL);
+    set('*', CCTL);
+    set('?', CCTL);
+    set('[', CCTL);
+    set('=', CCTL);
+    set('~', CCTL);
+    set(':', CCTL);
+    set('/', CCTL);
+    set('-', CCTL);
+
+    tab = sqsyntax;
+    set_range(CTL_FIRST, CTL_LAST, CCTL);
+    set('\n', CNL);
+    set('\'', CSQUOTE);
+    /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */
+    set('!', CCTL);
+    set('*', CCTL) ;
+    set('?', CCTL);
+    set('[', CCTL);
+    set('=', CCTL);
+    set('~', CCTL);
+    set(':', CCTL);
+    set('/', CCTL);
+    set('-', CCTL);
+
+    tab = arisyntax;
+    set_range(CTL_FIRST, CTL_LAST, CCTL);
+    set('\n', CNL);
+    set('\\', CBACK);
+    set('`', CBQUOTE);
+    set('\'', CSQUOTE);
+    set('"', CDQUOTE);
+    set('$', CVAR);
+    set('}', CENDVAR);
+    set('(', CLP);
+    set(')', CRP);
+
+    tab = is_type;
+    set_range('0', '9', ISDIGIT);
+    set_range('a', 'z', ISLOWER);
+    set_range('A', 'Z', ISUPPER);
+    set('_', ISUNDER);
+    set('#', ISSPECL);
+    set('?', ISSPECL);
+    set('$', ISSPECL);
+    set('!', ISSPECL);
+    set('-', ISSPECL);
+    set('*', ISSPECL);
+    set('@', ISSPECL);
+}
+
+#else /* !_MSC_VER */
+
+#if CWORD != 0
+#error initialisation assumes 'CWORD' is zero
+#endif
+
+#define ndx(ch) (ch + 1 - CHAR_MIN)
+#define set(ch, val) [ndx(ch)] = val,
+#define set_range(s, e, val) [ndx(s) ... ndx(e)] = val,
+
+/* Shut up the pedantic warnings about set_range() */
+#ifdef __GNUC__
+# if __GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 2)
+#  pragma GCC diagnostic ignored "-Wpedantic"
+# endif
+#endif
+
+/* syntax table used when not in quotes */
+const char basesyntax[257] = { CSHEOF,
+    set_range(CTL_FIRST, CTL_LAST, CCTL)
+    set('\n', CNL)
+    set('\\', CBACK)
+    set('\'', CSQUOTE)
+    set('"', CDQUOTE)
+    set('`', CBQUOTE)
+    set('$', CVAR)
+    set('}', CENDVAR)
+    set('<', CSPCL)
+    set('>', CSPCL)
+    set('(', CSPCL)
+    set(')', CSPCL)
+    set(';', CSPCL)
+    set('&', CSPCL)
+    set('|', CSPCL)
+    set(' ', CSPCL)
+    set('\t', CSPCL)
+};
+
+/* syntax table used when in double quotes */
+const char dqsyntax[257] = { CSHEOF,
+    set_range(CTL_FIRST, CTL_LAST, CCTL)
+    set('\n', CNL)
+    set('\\', CBACK)
+    set('"', CDQUOTE)
+    set('`', CBQUOTE)
+    set('$', CVAR)
+    set('}', CENDVAR)
+    /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */
+    set('!', CCTL)
+    set('*', CCTL)
+    set('?', CCTL)
+    set('[', CCTL)
+    set('=', CCTL)
+    set('~', CCTL)
+    set(':', CCTL)
+    set('/', CCTL)
+    set('-', CCTL)
+};
+
+/* syntax table used when in single quotes */
+const char sqsyntax[257] = { CSHEOF,
+    set_range(CTL_FIRST, CTL_LAST, CCTL)
+    set('\n', CNL)
+    set('\'', CSQUOTE)
+    /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */
+    set('!', CCTL)
+    set('*', CCTL)
+    set('?', CCTL)
+    set('[', CCTL)
+    set('=', CCTL)
+    set('~', CCTL)
+    set(':', CCTL)
+    set('/', CCTL)
+    set('-', CCTL)
+};
+
+/* syntax table used when in arithmetic */
+const char arisyntax[257] = { CSHEOF,
+    set_range(CTL_FIRST, CTL_LAST, CCTL)
+    set('\n', CNL)
+    set('\\', CBACK)
+    set('`', CBQUOTE)
+    set('\'', CSQUOTE)
+    set('"', CDQUOTE)
+    set('$', CVAR)
+    set('}', CENDVAR)
+    set('(', CLP)
+    set(')', CRP)
+};
+
+/* character classification table */
+const char is_type[257] = { 0,
+    set_range('0', '9', ISDIGIT)
+    set_range('a', 'z', ISLOWER)
+    set_range('A', 'Z', ISUPPER)
+    set('_', ISUNDER)
+    set('#', ISSPECL)
+    set('?', ISSPECL)
+    set('$', ISSPECL)
+    set('!', ISSPECL)
+    set('-', ISSPECL)
+    set('*', ISSPECL)
+    set('@', ISSPECL)
+};
+#endif /* !_MSC_VER */
diff --git a/src/kash/syntax.h b/src/kash/syntax.h
new file mode 100644
index 0000000..2c6aab8
--- /dev/null
+++ b/src/kash/syntax.h
@@ -0,0 +1,91 @@
+/*	$NetBSD: syntax.h,v 1.2 2004/01/17 17:38:12 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <ctype.h>
+#include <limits.h>
+
+/* Syntax classes */
+#define CWORD 0			/* character is nothing special */
+#define CNL 1			/* newline character */
+#define CBACK 2			/* a backslash character */
+#define CSQUOTE 3		/* single quote */
+#define CDQUOTE 4		/* double quote */
+#define CBQUOTE 5		/* backwards single quote */
+#define CVAR 6			/* a dollar sign */
+#define CENDVAR 7		/* a '}' character */
+#define CLP 8			/* a left paren in arithmetic */
+#define CRP 9			/* a right paren in arithmetic */
+#define CSHEOF 10		/* end of file */
+#define CCTL 11			/* like CWORD, except it must be escaped */
+#define CSPCL 12		/* these terminate a word */
+
+/* Syntax classes for is_ functions */
+#define ISDIGIT 01		/* a digit */
+#define ISUPPER 02		/* an upper case letter */
+#define ISLOWER 04		/* a lower case letter */
+#define ISUNDER 010		/* an underscore */
+#define ISSPECL 020		/* the name of a special parameter */
+
+#define PEOF (CHAR_MIN - 1)
+#define SYNBASE (-PEOF)
+/* XXX UPEOF is CHAR_MAX, so is a valid 'char' value... */
+#define UPEOF ((char)PEOF)
+
+
+#define BASESYNTAX (basesyntax + SYNBASE)
+#define DQSYNTAX (dqsyntax + SYNBASE)
+#define SQSYNTAX (sqsyntax + SYNBASE)
+#define ARISYNTAX (arisyntax + SYNBASE)
+
+/* These defines assume that the digits are contiguous */
+#define is_digit(c)	((unsigned)((c) - '0') <= 9)
+#define is_alpha(c)	(((char)(c)) != UPEOF && ((c) < CTL_FIRST || (c) > CTL_LAST) && isalpha((unsigned char)(c)))
+#define is_name(c)	(((char)(c)) != UPEOF && ((c) < CTL_FIRST || (c) > CTL_LAST) && ((c) == '_' || isalpha((unsigned char)(c))))
+#define is_in_name(c)	(((char)(c)) != UPEOF && ((c) < CTL_FIRST || (c) > CTL_LAST) && ((c) == '_' || isalnum((unsigned char)(c))))
+#define is_special(c)	((is_type+SYNBASE)[c] & (ISSPECL|ISDIGIT))
+#define digit_val(c)	((c) - '0')
+
+#ifdef _MSC_VER
+extern char basesyntax[];
+extern char dqsyntax[];
+extern char sqsyntax[];
+extern char arisyntax[];
+extern char is_type[];
+#else
+extern const char basesyntax[];
+extern const char dqsyntax[];
+extern const char sqsyntax[];
+extern const char arisyntax[];
+extern const char is_type[];
+#endif
diff --git a/src/kash/tests/Makefile.kmk b/src/kash/tests/Makefile.kmk
new file mode 100644
index 0000000..40e081d
--- /dev/null
+++ b/src/kash/tests/Makefile.kmk
@@ -0,0 +1,75 @@
+# $Id: Makefile.kmk 3433 2020-09-02 17:25:31Z bird $
+## @file
+# Sub-makefile for kash tests.
+#
+
+#
+# Copyright (c) 2005-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ../../..
+include $(KBUILD_PATH)/subheader.kmk
+
+#
+# The program.
+#
+
+TESTING += kash_tests
+
+KASH_TEST_BIN   = $(if $(kash_1_TARGET),$(kash_1_TARGET),$(PATH_INS)/$(TEMPLATE_BIN_INST)kmk_ash$(SUFF_EXE))
+KASH_TEST_DIR  := $(PATH_SUB_CURRENT)
+KASH_TESTCASES := $(addprefix $(KASH_TEST_DIR)/,\
+	trap-exit-1 \
+	trap-int-1 \
+	trap-term-1 \
+	tick-1 \
+	redirect-1 \
+	redirect-2 \
+	redirect-3 \
+	pipe-1 \
+	pipe-2 \
+	)
+
+#	exec-1  - lost
+
+
+kash_tests::
+	$(ECHO) "kash tests..."
+	@export KASH_TEST_DIR=$(KASH_TEST_DIR); \
+	KASH_FAILURE=0; \
+	$(foreach test,$(KASH_TESTCASES)\
+		,echo " * $(KASH_TEST_BIN) $(test)"; \
+		if ! $(KASH_TEST_BIN) $(test); then \
+			echo " => FAILURE!"; \
+			KASH_FAILURE=`$(EXPR_EXT) $${KASH_FAILURE} + 1`; \
+		fi; \
+		) \
+	if test $$KASH_FAILURE -eq 0; then \
+		echo 'kash tests: All tests succeeded.'; \
+	else \
+		echo "kash tests: $$KASH_FAILURE tests failed"'!!'; \
+		echo ""; \
+		exit 1; \
+	fi
+
+
+
+include $(FILE_KBUILD_SUB_FOOTER)
+
+
diff --git a/src/kash/tests/common-include.sh b/src/kash/tests/common-include.sh
new file mode 100755
index 0000000..199f42f
--- /dev/null
+++ b/src/kash/tests/common-include.sh
@@ -0,0 +1,14 @@
+# File to be sourced. Contains pointers to a bunch of shell utilities.
+
+CMD_PREFIX=kmk_
+CMD_CAT=${CMD_PREFIX}cat
+CMD_CP=${CMD_PREFIX}cp
+CMD_EXPR=${CMD_PREFIX}expr
+CMD_INSTALL=${CMD_PREFIX}install
+CMD_LN=${CMD_PREFIX}ln
+CMD_MV=${CMD_PREFIX}mv
+CMD_RM=${CMD_PREFIX}rm
+CMD_SED=${CMD_PREFIX}sed
+CMD_SLEEP=${CMD_PREFIX}sleep
+CMD_TIME=${CMD_PREFIX}time
+
diff --git a/src/kash/tests/netbsd/exit1 b/src/kash/tests/netbsd/exit1
new file mode 100755
index 0000000..5139fe3
--- /dev/null
+++ b/src/kash/tests/netbsd/exit1
@@ -0,0 +1,7 @@
+#!/bin/sh
+x=`( trap 'echo exiting' EXIT; /usr/bin/true )`
+if [ -z "$x" ]
+then
+	echo failed
+	exit 1
+fi
diff --git a/src/kash/tests/netbsd/var1 b/src/kash/tests/netbsd/var1
new file mode 100755
index 0000000..68267af
--- /dev/null
+++ b/src/kash/tests/netbsd/var1
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+line='/foo/bar/*/baz'
+if [ "/foo/bar/" != ${line%%\**}"" ]
+then
+	echo broken
+	exit 1
+fi
diff --git a/src/kash/tests/netbsd/waitjob b/src/kash/tests/netbsd/waitjob
new file mode 100755
index 0000000..e2cc333
--- /dev/null
+++ b/src/kash/tests/netbsd/waitjob
@@ -0,0 +1,8 @@
+#!/bin/sh
+sleep 3 &
+sleep 1 &
+
+wait %1
+[ $? = 0 ] || echo fail1
+wait %2
+[ $? = 0 ] || echo fail2
diff --git a/src/kash/tests/pipe-1 b/src/kash/tests/pipe-1
new file mode 100644
index 0000000..fbd6833
--- /dev/null
+++ b/src/kash/tests/pipe-1
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+# Pipes input from an builtin command thru an external one.
+
+. ${KASH_TEST_DIR}/common-include.sh
+
+TMPFILE="/tmp/pipe-1.$$.tmp"
+
+echo piped | $CMD_SED -e 's/piped/1/' > $TMPFILE
+VAR=`$CMD_CAT $TMPFILE`
+$CMD_RM -f $TMPFILE
+if test "$VAR" != "1"; then
+    echo "pipe-1: FAILURE - VAR=$VAR"
+    exit 1
+fi
+echo "pipe-1: SUCCESS"
+exit 0
+
diff --git a/src/kash/tests/pipe-2 b/src/kash/tests/pipe-2
new file mode 100644
index 0000000..6ba2637
--- /dev/null
+++ b/src/kash/tests/pipe-2
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+# Pipes input from an builtin command thru an external one.
+
+. ${KASH_TEST_DIR}/common-include.sh
+
+TMPFILE1="/tmp/pipe-2a.$$.tmp"
+TMPFILE2="/tmp/pipe-2b.$$.tmp"
+echo piped > $TMPFILE1
+$CMD_CAT $TMPFILE1 \
+	| $CMD_SED -e 's/piped/abc/' \
+	| $CMD_SED -e 's/abc/def/'  \
+	| $CMD_SED -e 's/def/ghi/'  \
+	| $CMD_SED -e 's/ghi/jkl/'  \
+	| $CMD_SED -e 's/jkl/mno/'  \
+	| $CMD_SED -e 's/mno/pqr/'  \
+	| $CMD_SED -e 's/pqr/stu/'  \
+	| $CMD_SED -e 's/stu/vwx/'  \
+	| $CMD_SED -e 's/vwx/yz_/'  \
+	> $TMPFILE2
+
+VAR=`$CMD_CAT $TMPFILE2`
+$CMD_RM -f -- $TMPFILE1 $TMPFILE2
+if test "$VAR" != "yz_"; then
+    echo "pipe-2: FAILURE - VAR=$VAR"
+    exit 1
+fi
+echo "pipe-2: SUCCESS"
+exit 0
+
diff --git a/src/kash/tests/redirect-1 b/src/kash/tests/redirect-1
new file mode 100755
index 0000000..350e56a
--- /dev/null
+++ b/src/kash/tests/redirect-1
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+# Redirect output from a builtin command.
+
+. ${KASH_TEST_DIR}/common-include.sh
+
+TMPFILE="/tmp/redirect-1.$$.tmp"
+
+echo 1 > $TMPFILE
+VAR=`$CMD_CAT $TMPFILE`
+$CMD_RM -f $TMPFILE
+if test "$VAR" != "1"; then
+    echo "redirect-1: FAILURE - VAR=$VAR"
+    exit 1
+fi
+echo "redirect-1: SUCCESS"
+exit 0
+
diff --git a/src/kash/tests/redirect-2 b/src/kash/tests/redirect-2
new file mode 100755
index 0000000..09bd905
--- /dev/null
+++ b/src/kash/tests/redirect-2
@@ -0,0 +1,19 @@
+#!/bin/sh
+
+# Redirect output from builtin commands in a subshell.
+
+. ${KASH_TEST_DIR}/common-include.sh
+
+TMPFILE="/tmp/redirect-2.$$.tmp"
+
+(echo -n 1 ; echo -n 2 ; echo -n 3 ) > $TMPFILE
+VAR=`$CMD_CAT $TMPFILE`
+$CMD_RM -f $TMPFILE
+if test "$VAR" != "123"; then
+    echo "redirect-2: FAILURE - VAR=$VAR"
+    exit 1
+fi
+echo "redirect-2: SUCCESS"
+exit 0
+
+
diff --git a/src/kash/tests/redirect-3 b/src/kash/tests/redirect-3
new file mode 100755
index 0000000..3cb30e4
--- /dev/null
+++ b/src/kash/tests/redirect-3
@@ -0,0 +1,20 @@
+#!/bin/sh
+
+# Redirect input to an external command.
+
+. ${KASH_TEST_DIR}/common-include.sh
+
+TMPFILE="/tmp/redirect-3.$$.tmp"
+
+echo 1 > $TMPFILE
+echo 2 >> $TMPFILE
+echo 3 >> $TMPFILE
+VAR=`$CMD_SED -e '/2/!d' < $TMPFILE`
+$CMD_RM -f $TMPFILE
+if test "$VAR" != "2"; then
+    echo "redirect-3: FAILURE - VAR=$VAR."
+    exit 1
+fi
+echo "redirect-3: SUCCESS"
+exit 0
+
diff --git a/src/kash/tests/tick-1 b/src/kash/tests/tick-1
new file mode 100755
index 0000000..1a64f14
--- /dev/null
+++ b/src/kash/tests/tick-1
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+VAR=`echo "echoed string"`
+if test "$VAR" != "echoed string"; then
+    echo "tick-1: failure: VAR=$VAR"
+    exit 1
+fi
+echo 'tick-1: SUCCESS'
+exit 0
+
diff --git a/src/kash/tests/trap-exit-1 b/src/kash/tests/trap-exit-1
new file mode 100755
index 0000000..50b805c
--- /dev/null
+++ b/src/kash/tests/trap-exit-1
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+trap 'echo "trap-exit-1: overriding exit 1"; exit 0' EXIT
+exit 1
+exit 2
+
+
diff --git a/src/kash/tests/trap-int-1 b/src/kash/tests/trap-int-1
new file mode 100755
index 0000000..79e2dbb
--- /dev/null
+++ b/src/kash/tests/trap-int-1
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+trap 'echo "trap-int-1: caught SIGINT"; exit 0' INT
+kill -INT $$
+exit 2
+
diff --git a/src/kash/tests/trap-term-1 b/src/kash/tests/trap-term-1
new file mode 100755
index 0000000..e9e94d5
--- /dev/null
+++ b/src/kash/tests/trap-term-1
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+trap 'echo "trap-term-1: caught SIGTERM"; exit 0' TERM
+kill -TERM $$
+exit 2
+
diff --git a/src/kash/trap.c b/src/kash/trap.c
new file mode 100644
index 0000000..df2d4a3
--- /dev/null
+++ b/src/kash/trap.c
@@ -0,0 +1,471 @@
+/*	$NetBSD: trap.c,v 1.31 2005/01/11 19:38:57 christos Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)trap.c	8.5 (Berkeley) 6/5/95";
+#else
+__RCSID("$NetBSD: trap.c,v 1.31 2005/01/11 19:38:57 christos Exp $");
+#endif /* not lint */
+#endif
+
+#include <stdlib.h>
+
+#include "shell.h"
+#include "main.h"
+#include "nodes.h"	/* for other headers */
+#include "eval.h"
+#include "jobs.h"
+#include "show.h"
+#include "options.h"
+#include "syntax.h"
+#include "output.h"
+#include "memalloc.h"
+#include "error.h"
+#include "trap.h"
+#include "mystring.h"
+#include "var.h"
+#include "shinstance.h"
+
+
+/*
+ * Sigmode records the current value of the signal handlers for the various
+ * modes.  A value of zero means that the current handler is not known.
+ * S_HARD_IGN indicates that the signal was ignored on entry to the shell,
+ */
+
+#define S_DFL 1			/* default signal handling (SIG_DFL) */
+#define S_CATCH 2		/* signal is caught */
+#define S_IGN 3			/* signal is ignored (SIG_IGN) */
+#define S_HARD_IGN 4		/* signal is ignored permenantly */
+#define S_RESET 5		/* temporary - to reset a hard ignored sig */
+
+
+//char *trap[NSIG+1];		/* trap handler commands */
+//MKINIT char sigmode[NSIG];	/* current value of signal */
+//char gotsig[NSIG];		/* indicates specified signal received */
+//int pendingsigs;		/* indicates some signal received */
+
+static int getsigaction(shinstance *, int, shsig_t *);
+
+#ifndef SH_FORKED_MODE
+void
+subshellinittrap(shinstance *psh, shinstance *inherit)
+{
+	/* The forkchild calls clear_traps(), we have to emulate that here. */
+	unsigned i;
+	memcpy(psh->sigmode, inherit->sigmode, sizeof(psh->sigmode));
+	for (i = 0; i < K_ELEMENTS(inherit->trap); i++) {
+		const char *src = inherit->trap[i];
+		if (!src) {
+		} else if (i > 0) {
+			setsignal(psh, i);
+		}
+	}
+}
+#endif
+
+
+/*
+ * return the signal number described by `p' (as a number or a name)
+ * or -1 if it isn't one
+ */
+
+static int
+signame_to_signum(shinstance *psh, const char *p)
+{
+	int i;
+
+	if (is_number(p))
+		return number(psh, p);
+
+	if (strcasecmp(p, "exit") == 0 )
+		return 0;
+
+	if (strncasecmp(p, "sig", 3) == 0)
+		p += 3;
+
+	for (i = 0; i < NSIG; ++i)
+		if (strcasecmp(p, sys_signame[i]) == 0)
+			return i;
+	return -1;
+}
+
+/*
+ * Print a list of valid signal names
+ */
+static void
+printsignals(shinstance *psh)
+{
+	int n;
+
+	out1str(psh, "EXIT ");
+
+	for (n = 1; n < NSIG; n++) {
+		out1fmt(psh, "%s", sys_signame[n]);
+		if ((n == NSIG/2) ||  n == (NSIG - 1))
+			out1str(psh, "\n");
+		else
+			out1c(psh, ' ');
+	}
+}
+
+/*
+ * The trap builtin.
+ */
+
+int
+trapcmd(shinstance *psh, int argc, char **argv)
+{
+	char *action;
+	char **ap;
+	int signo;
+
+	if (argc <= 1) {
+		for (signo = 0 ; signo <= NSIG ; signo++)
+			if (psh->trap[signo] != NULL) {
+				out1fmt(psh, "trap -- ");
+				print_quoted(psh, psh->trap[signo]);
+				out1fmt(psh, " %s\n",
+				    (signo) ? sys_signame[signo] : "EXIT");
+			}
+		return 0;
+	}
+	ap = argv + 1;
+
+	action = NULL;
+
+	if (strcmp(*ap, "--") == 0)
+		if (*++ap == NULL)
+			return 0;
+
+	if (signame_to_signum(psh, *ap) == -1) {
+		if ((*ap)[0] == '-') {
+			if ((*ap)[1] == '\0')
+				ap++;
+			else if ((*ap)[1] == 'l' && (*ap)[2] == '\0') {
+				printsignals(psh);
+				return 0;
+			}
+			else
+				error(psh, "bad option %s\n", *ap);
+		}
+		else
+			action = *ap++;
+	}
+
+	while (*ap) {
+		if (is_number(*ap))
+			signo = number(psh, *ap);
+		else
+			signo = signame_to_signum(psh, *ap);
+
+		if (signo < 0 || signo > NSIG)
+			error(psh, "%s: bad trap", *ap);
+
+		INTOFF;
+		if (action)
+			action = savestr(psh, action);
+
+		if (psh->trap[signo])
+			ckfree(psh, psh->trap[signo]);
+
+		psh->trap[signo] = action;
+
+		if (signo != 0)
+			setsignal(psh, signo);
+		INTON;
+		ap++;
+	}
+	return 0;
+}
+
+
+
+/*
+ * Clear traps on a fork or vfork.
+ * Takes one arg vfork, to tell it to not be destructive of
+ * the parents variables.
+ */
+
+void
+clear_traps(shinstance *psh)
+{
+	char **tp;
+
+	for (tp = psh->trap ; tp <= &psh->trap[NSIG] ; tp++) {
+		if (*tp && **tp) {	/* trap not NULL or SIG_IGN */
+			INTOFF;
+			ckfree(psh, *tp);
+			*tp = NULL;
+			if (tp != &psh->trap[0])
+				setsignal(psh, (int)(tp - psh->trap));
+			INTON;
+		}
+	}
+}
+
+
+
+/*
+ * Set the signal handler for the specified signal.  The routine figures
+ * out what it should be set to.
+ */
+
+void
+setsignal(shinstance *psh, int signo)
+{
+	int action;
+	shsig_t sigact = SH_SIG_DFL;
+	char *t, tsig;
+
+	if ((t = psh->trap[signo]) == NULL)
+		action = S_DFL;
+	else if (*t != '\0')
+		action = S_CATCH;
+	else
+		action = S_IGN;
+	if (psh->rootshell && action == S_DFL) {
+		switch (signo) {
+		case SIGINT:
+			if (iflag(psh) || psh->minusc || sflag(psh) == 0)
+				action = S_CATCH;
+			break;
+		case SIGQUIT:
+#ifdef DEBUG
+			if (debug(psh))
+				break;
+#endif
+			/* FALLTHROUGH */
+		case SIGTERM:
+			if (iflag(psh))
+				action = S_IGN;
+			break;
+#if JOBS
+		case SIGTSTP:
+		case SIGTTOU:
+			if (mflag(psh))
+				action = S_IGN;
+			break;
+#endif
+		}
+	}
+
+	t = &psh->sigmode[signo - 1];
+	tsig = *t;
+	if (tsig == 0) {
+		/*
+		 * current setting unknown
+		 */
+		if (!getsigaction(psh, signo, &sigact)) {
+			/*
+			 * Pretend it worked; maybe we should give a warning
+			 * here, but other shells don't. We don't alter
+			 * sigmode, so that we retry every time.
+			 */
+			return;
+		}
+		if (sigact == SH_SIG_IGN) {
+			if (mflag(psh) && (signo == SIGTSTP ||
+			     signo == SIGTTIN || signo == SIGTTOU)) {
+				tsig = S_IGN;	/* don't hard ignore these */
+			} else
+				tsig = S_HARD_IGN;
+		} else {
+			tsig = S_RESET;	/* force to be set */
+		}
+	}
+	if (tsig == S_HARD_IGN || tsig == action)
+		return;
+	switch (action) {
+		case S_DFL:	sigact = SH_SIG_DFL;	break;
+		case S_CATCH:  	sigact = onsig;		break;
+		case S_IGN:	sigact = SH_SIG_IGN;	break;
+	}
+        *t = action;
+	sh_siginterrupt(psh, signo, 1);
+	sh_signal(psh, signo, sigact);
+}
+
+/*
+ * Return the current setting for sig w/o changing it.
+ */
+static int
+getsigaction(shinstance *psh, int signo, shsig_t *sigact)
+{
+	struct shsigaction sa;
+
+	if (sh_sigaction(psh, signo, NULL, &sa) == -1)
+		return 0;
+	*sigact = (shsig_t)sa.sh_handler;
+	return 1;
+}
+
+/*
+ * Ignore a signal.
+ */
+
+void
+ignoresig(shinstance *psh, int signo)
+{
+	if (psh->sigmode[signo - 1] != S_IGN && psh->sigmode[signo - 1] != S_HARD_IGN) {
+		sh_signal(psh, signo, SH_SIG_IGN);
+	}
+	psh->sigmode[signo - 1] = S_HARD_IGN;
+}
+
+
+#ifdef mkinit
+INCLUDE <signal.h>
+INCLUDE "trap.h"
+
+SHELLPROC {
+	char *sm;
+
+	clear_traps(psh);
+	for (sm = psh->sigmode ; sm < psh->sigmode + NSIG ; sm++) {
+		if (*sm == S_IGN)
+			*sm = S_HARD_IGN;
+	}
+}
+#endif
+
+
+
+/*
+ * Signal handler.
+ */
+
+void
+onsig(shinstance *psh, int signo)
+{
+	sh_signal(psh, signo, onsig);
+	if (signo == SIGINT && psh->trap[SIGINT] == NULL) {
+		onint(psh);
+		return;
+	}
+	psh->gotsig[signo - 1] = 1;
+	psh->pendingsigs++;
+}
+
+
+
+/*
+ * Called to execute a trap.  Perhaps we should avoid entering new trap
+ * handlers while we are executing a trap handler.
+ */
+
+void
+dotrap(shinstance *psh)
+{
+	int i;
+	int savestatus;
+
+	for (;;) {
+		for (i = 1 ; ; i++) {
+			if (psh->gotsig[i - 1])
+				break;
+			if (i >= NSIG)
+				goto done;
+		}
+		psh->gotsig[i - 1] = 0;
+		savestatus=psh->exitstatus;
+		evalstring(psh, psh->trap[i], 0);
+		psh->exitstatus=savestatus;
+	}
+done:
+	psh->pendingsigs = 0;
+}
+
+
+
+/*
+ * Controls whether the shell is interactive or not.
+ */
+
+
+void
+setinteractive(shinstance *psh, int on)
+{
+	static int is_interactive;
+
+	if (on == is_interactive)
+		return;
+	setsignal(psh, SIGINT);
+	setsignal(psh, SIGQUIT);
+	setsignal(psh, SIGTERM);
+	is_interactive = on;
+}
+
+
+
+/*
+ * Called to exit the shell.
+ */
+
+int
+exitshell2(shinstance *psh, int status)
+{
+	struct jmploc loc1, loc2;
+	char *p;
+
+	TRACE((psh, "pid %" SHPID_PRI ", exitshell(%d)\n", sh_getpid(psh), status));
+	if (setjmp(loc1.loc)) {
+		goto l1;
+	}
+	if (setjmp(loc2.loc)) {
+		goto l2;
+	}
+	psh->handler = &loc1;
+	if ((p = psh->trap[0]) != NULL && *p != '\0') {
+		psh->trap[0] = NULL;
+		evalstring(psh, p, 0);
+	}
+l1:
+	psh->handler = &loc2;			/* probably unnecessary */
+	output_flushall(psh);
+#if JOBS
+	setjobctl(psh, 0);
+#endif
+l2:
+	return status;
+}
+
+SH_NORETURN_1 void
+exitshell(shinstance *psh, int status)
+{
+	sh__exit(psh, exitshell2(psh, status));
+	/* NOTREACHED */
+}
+
diff --git a/src/kash/trap.h b/src/kash/trap.h
new file mode 100644
index 0000000..7a1b220
--- /dev/null
+++ b/src/kash/trap.h
@@ -0,0 +1,51 @@
+/*	$NetBSD: trap.h,v 1.17 2003/08/07 09:05:39 agc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)trap.h	8.3 (Berkeley) 6/5/95
+ */
+
+/*extern int pendingsigs;*/
+
+#ifndef SH_FORKED_MODE
+void subshellinittrap(shinstance *, shinstance *);
+#endif
+int trapcmd(struct shinstance *, int, char **);
+void clear_traps(struct shinstance *);
+void setsignal(struct shinstance *, int);
+void ignoresig(struct shinstance *, int);
+void onsig(struct shinstance *, int);
+void dotrap(struct shinstance *);
+void setinteractive(struct shinstance *, int);
+int exitshell2(struct shinstance *, int);
+SH_NORETURN_1 void exitshell(struct shinstance *, int) SH_NORETURN_2;
+
diff --git a/src/kash/tstDump.c b/src/kash/tstDump.c
new file mode 100644
index 0000000..2ef959e
--- /dev/null
+++ b/src/kash/tstDump.c
@@ -0,0 +1,75 @@
+/* $Id: tstDump.c 2413 2010-09-11 17:43:04Z bird $ */

+/** @file

+ * tstDump - dump inherited file handle information on Windows.

+ */

+

+/*

+ * Copyright (c) 2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>

+ *

+ *

+ * This file is part of kBuild.

+ *

+ * kBuild is free software; you can redistribute it and/or modify

+ * it under the terms of the GNU General Public License as published by

+ * the Free Software Foundation; either version 2 of the License, or

+ * (at your option) any later version.

+ *

+ * kBuild is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

+ * GNU General Public License for more details.

+ *

+ * You should have received a copy of the GNU General Public License

+ * along with kBuild; if not, write to the Free Software

+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

+ *

+ */

+

+/*******************************************************************************

+*   Header Files                                                               *

+*******************************************************************************/

+#include <Windows.h>

+#include <stdio.h>

+

+

+int main()

+{

+    STARTUPINFO Info;

+    GetStartupInfo(&Info);

+

+    printf("tst: hStdInput =%p / %p\n", Info.hStdInput,  GetStdHandle(STD_INPUT_HANDLE));

+    printf("tst: hStdOutput=%p / %p\n", Info.hStdOutput, GetStdHandle(STD_OUTPUT_HANDLE));

+    printf("tst: hStdError =%p / %p\n", Info.hStdError,  GetStdHandle(STD_ERROR_HANDLE));

+    printf("tst: cbReserved2=%d (%#x) lpReserved2=%p\n",

+           Info.cbReserved2, Info.cbReserved2, Info.lpReserved2);

+

+    if (Info.cbReserved2 > sizeof(int) && Info.lpReserved2)

+    {

+        int             count = *(int *)Info.lpReserved2;

+        unsigned char  *paf   = (unsigned char *)Info.lpReserved2 + sizeof(int);

+        HANDLE         *pah   = (HANDLE *)(paf + count);

+        int             i;

+

+        printf("tst: count=%d\n", count);

+        for (i = 0; i < count; i++)

+        {

+            if (paf[i] == 0 && pah[i] == INVALID_HANDLE_VALUE)

+                continue;

+

+            printf("tst: #%02d: native=%#p flags=%#x", i, pah[i], paf[i]);

+            if (paf[i] & 0x01)  printf(" FOPEN");

+            if (paf[i] & 0x02)  printf(" FEOFLAG");

+            if (paf[i] & 0x02)  printf(" FEOFLAG");

+            if (paf[i] & 0x04)  printf(" FCRLF");

+            if (paf[i] & 0x08)  printf(" FPIPE");

+            if (paf[i] & 0x10)  printf(" FNOINHERIT");

+            if (paf[i] & 0x20)  printf(" FAPPEND");

+            if (paf[i] & 0x40)  printf(" FDEV");

+            if (paf[i] & 0x80)  printf(" FTEXT");

+            printf("\n");

+        }

+    }

+

+    return 0;

+}

+

diff --git a/src/kash/var.c b/src/kash/var.c
new file mode 100644
index 0000000..22acb28
--- /dev/null
+++ b/src/kash/var.c
@@ -0,0 +1,1020 @@
+/*	$NetBSD: var.c,v 1.36 2004/10/06 10:23:43 enami Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)var.c	8.3 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: var.c,v 1.36 2004/10/06 10:23:43 enami Exp $");
+#endif /* not lint */
+#endif
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef PC_OS2_LIBPATHS
+#define INCL_BASE
+#include <os2.h>
+
+#ifndef LIBPATHSTRICT
+#define LIBPATHSTRICT 3
+#endif
+
+extern APIRET
+#ifdef APIENTRY
+    APIENTRY
+#endif
+    DosQueryHeaderInfo(HMODULE hmod, ULONG ulIndex, PVOID pvBuffer, ULONG cbBuffer, ULONG ulSubFunction);
+#define QHINF_EXEINFO       1 /* NE exeinfo. */
+#define QHINF_READRSRCTBL   2 /* Reads from the resource table. */
+#define QHINF_READFILE      3 /* Reads from the executable file. */
+#define QHINF_LIBPATHLENGTH 4 /* Gets the libpath length. */
+#define QHINF_LIBPATH       5 /* Gets the entire libpath. */
+#define QHINF_FIXENTRY      6 /* NE only */
+#define QHINF_STE           7 /* NE only */
+#define QHINF_MAPSEL        8 /* NE only */
+
+#endif
+
+
+
+/*
+ * Shell variables.
+ */
+
+#include "shell.h"
+#include "output.h"
+#include "expand.h"
+#include "nodes.h"	/* for other headers */
+#include "eval.h"	/* defines cmdenviron */
+#include "exec.h"
+#include "syntax.h"
+#include "options.h"
+#include "mail.h"
+#include "var.h"
+#include "memalloc.h"
+#include "error.h"
+#include "mystring.h"
+#include "parser.h"
+#include "show.h"
+#ifndef SMALL
+# include "myhistedit.h"
+#endif
+#include "shinstance.h"
+
+//#ifdef SMALL
+//#define VTABSIZE 39
+//#else
+//#define VTABSIZE 517
+//#endif
+
+
+struct varinit {
+	unsigned var_off;
+	int flags;
+	const char *text;
+	void (*func)(shinstance *, const char *);
+};
+
+
+//#if ATTY
+//struct var vatty;
+//#endif
+//#ifndef SMALL
+//struct var vhistsize;
+//struct var vterm;
+//#endif
+//struct var vifs;
+//struct var vmail;
+//struct var vmpath;
+//struct var vpath;
+//#ifdef _MSC_VER
+//struct var vpath2;
+//#endif
+//struct var vps1;
+//struct var vps2;
+//struct var vps4;
+//struct var vvers; - unused
+//struct var voptind;
+
+#ifdef PC_OS2_LIBPATHS
+//static struct var libpath_vars[4];
+static const char * const libpath_envs[4] = {"LIBPATH=", "BEGINLIBPATH=", "ENDLIBPATH=", "LIBPATHSTRICT="};
+#endif
+
+const struct varinit varinit[] = {
+#if ATTY
+	{ offsetof(shinstance, vatty),	VSTRFIXED|VSTRFIXED2|VTEXTFIXED|VUNSET,	"ATTY=",
+	  NULL },
+#endif
+#ifndef SMALL
+	{ offsetof(shinstance, vhistsize),	VSTRFIXED|VSTRFIXED2|VTEXTFIXED|VUNSET,	"HISTSIZE=",
+	  sethistsize },
+#endif
+	{ offsetof(shinstance, vifs),	VSTRFIXED|VSTRFIXED2|VTEXTFIXED,		"IFS= \t\n",
+	  NULL },
+	{ offsetof(shinstance, vmail),	VSTRFIXED|VSTRFIXED2|VTEXTFIXED|VUNSET,	"MAIL=",
+	  NULL },
+	{ offsetof(shinstance, vmpath),	VSTRFIXED|VSTRFIXED2|VTEXTFIXED|VUNSET,	"MAILPATH=",
+	  NULL },
+	{ offsetof(shinstance, vpath),	VSTRFIXED|VSTRFIXED2|VTEXTFIXED,		"PATH=" _PATH_DEFPATH,
+	  changepath },
+	/*
+	 * vps1 depends on uid
+	 */
+	{ offsetof(shinstance, vps2),	VSTRFIXED|VSTRFIXED2|VTEXTFIXED,		"PS2=> ",
+	  NULL },
+	{ offsetof(shinstance, vps4),	VSTRFIXED|VSTRFIXED2|VTEXTFIXED,		"PS4=+ ",
+	  NULL },
+#ifndef SMALL
+	{ offsetof(shinstance, vterm),	VSTRFIXED|VSTRFIXED2|VTEXTFIXED|VUNSET,	"TERM=",
+	  setterm },
+#endif
+	{ offsetof(shinstance, voptind),	VSTRFIXED|VSTRFIXED2|VTEXTFIXED|VNOFUNC,	"OPTIND=1",
+	  getoptsreset },
+	{ 0,	0,				NULL,
+	  NULL }
+};
+
+//struct var *vartab[VTABSIZE];
+
+STATIC int strequal(const char *, const char *);
+STATIC struct var *find_var(shinstance *, const char *, struct var ***, int *);
+
+/*
+ * Initialize the varable symbol tables and import the environment
+ */
+
+#ifdef mkinit
+INCLUDE "var.h"
+
+INIT {
+	char **envp;
+
+	initvar(psh);
+	for (envp = sh_environ(psh) ; *envp ; envp++) {
+		if (strchr(*envp, '=')) {
+			setvareq(psh, *envp, VEXPORT|VTEXTFIXED);
+		}
+	}
+}
+#endif
+
+
+/*
+ * This routine initializes the builtin variables.  It is called when the
+ * shell is initialized and again when a shell procedure is spawned.
+ */
+
+void
+initvar(shinstance *psh)
+{
+	const struct varinit *ip;
+	struct var *vp;
+	struct var **vpp;
+#ifdef PC_OS2_LIBPATHS
+	char *psz = ckmalloc(psh, 2048);
+	int rc;
+	int i;
+
+	for (i = 0; i < 4; i++)
+	{
+		psh->libpath_vars[i].flags = VSTRFIXED | VSTRFIXED2 | VOS2LIBPATH;
+		psh->libpath_vars[i].func = NULL;
+
+		if (i > 0)
+		{
+			psz[0] = psz[1] = psz[2] = psz[3] = '\0';
+			rc = DosQueryExtLIBPATH(psz, i);
+		}
+		else
+		{
+			rc = DosQueryHeaderInfo(NULLHANDLE, 0, psz, 2048, QHINF_LIBPATH);
+			psh->libpath_vars[i].flags |= VREADONLY;
+		}
+		if (!rc && *psz)
+		{
+			int cch1 = strlen(libpath_envs[i]);
+			int cch2 = strlen(psz) + 1;
+			psh->libpath_vars[i].text = ckmalloc(psh, cch1 + cch2);
+			memcpy(psh->libpath_vars[i].text, libpath_envs[i], cch1);
+			memcpy(psh->libpath_vars[i].text + cch1, psz, cch2);
+		}
+		else
+		{
+			psh->libpath_vars[i].flags |= VUNSET | VTEXTFIXED;
+			psh->libpath_vars[i].text = (char *)libpath_envs[i];
+		}
+		if (find_var(psh, psh->libpath_vars[i].text, &vpp, &psh->libpath_vars[i].name_len) != NULL)
+			continue;
+		psh->libpath_vars[i].next = *vpp;
+		*vpp = &psh->libpath_vars[i];
+	}
+	ckfree(psh, psz);
+#endif
+
+	for (ip = varinit; ip->text; ip++) {
+		vp = (struct var *)((char *)psh + ip->var_off);
+		if (find_var(psh, ip->text, &vpp, &vp->name_len) != NULL)
+			continue;
+		vp->next = *vpp;
+		*vpp = vp;
+		vp->text = sh_strdup(psh, ip->text);
+		vp->flags = ip->flags;
+		vp->func = ip->func;
+	}
+	/*
+	 * PS1 depends on uid
+	 */
+	if (find_var(psh, "PS1", &vpp, &psh->vps1.name_len) == NULL) {
+		psh->vps1.next = *vpp;
+		*vpp = &psh->vps1;
+#ifdef KBUILD_VERSION_MAJOR
+		psh->vps1.text = sh_strdup(psh, sh_geteuid(psh) ? "PS1=kash$ " : "PS1=kash# ");
+#else
+		psh->vps1.text = sh_strdup(psh, sh_geteuid(psh) ? "PS1=$ " : "PS1=# ");
+#endif
+		psh->vps1.flags = VSTRFIXED|VSTRFIXED2|VTEXTFIXED; /** @todo text isn't fixed here... */
+	}
+}
+
+
+#ifndef SH_FORKED_MODE
+/*
+ * This routine is called to copy variable state from parent to child shell.
+ */
+void
+subshellinitvar(shinstance *psh, shinstance *inherit)
+{
+	unsigned i;
+	for (i = 0; i < K_ELEMENTS(inherit->vartab); i++) {
+		struct var const *vsrc = inherit->vartab[i];
+		if (vsrc) {
+			struct var **ppdst = &psh->vartab[i];
+			do
+			{
+				struct var *dst;
+				if (!(vsrc->flags & VSTRFIXED2)) {
+					dst = (struct var *)ckmalloc(psh, sizeof(*dst));
+					*dst = *vsrc;
+					dst->flags &= ~VSTRFIXED;
+				} else {
+					/* VSTRFIXED2 is used when the structure is a fixed allocation in
+					   the shinstance structure, so scan those to find which it is: */
+					size_t            left     = ((struct var *)&inherit->vartab[0] - &inherit->vatty);
+					struct var const *fixedsrc = &inherit->vatty;
+					dst = &psh->vatty;
+					while (left-- > 0)
+						if (vsrc != fixedsrc) {
+							fixedsrc++;
+							dst++;
+						} else
+							break;
+					kHlpAssert(left < 256 /*whatever, just no rollover*/);
+					*dst = *vsrc;
+				}
+
+				if (!(vsrc->flags & VTEXTFIXED)) {
+					dst->text = savestr(psh, vsrc->text);
+					dst->flags &= ~VSTACK;
+				}
+
+				*ppdst = dst;
+				ppdst = &dst->next;
+
+				vsrc = vsrc->next;
+			} while (vsrc);
+			*ppdst = NULL;
+		}
+	}
+
+	/** @todo We don't always need to copy local variables. */
+	if (inherit->localvars) {
+		struct localvar const *vsrc  = inherit->localvars;
+		struct localvar      **ppdst = &psh->localvars;
+		do
+		{
+			struct localvar *dst = ckmalloc(psh, sizeof(*dst));
+
+			dst->flags = vsrc->flags & ~(VSTACK | VTEXTFIXED | (vsrc->flags & VSTRFIXED2 ? 0 : VSTRFIXED));
+			if (vsrc->text)
+			    dst->text = savestr(psh, vsrc->text);
+			else
+			{
+			    dst->text = NULL;
+			    dst->flags |= vsrc->flags & VTEXTFIXED;
+			}
+			dst->vp = find_var(psh, vsrc->vp->text, NULL, NULL);
+			kHlpAssert(dst->vp);
+
+			*ppdst = dst;
+			ppdst = &dst->next;
+
+			vsrc = vsrc->next;
+		} while (vsrc);
+		*ppdst = NULL;
+	}
+}
+#endif /* !SH_FORKED_MODE */
+
+/*
+ * Safe version of setvar, returns 1 on success 0 on failure.
+ */
+
+int
+setvarsafe(shinstance *psh, const char *name, const char *val, int flags)
+{
+	struct jmploc jmploc;
+	struct jmploc *volatile savehandler = psh->handler;
+	int err = 0;
+#ifdef __GNUC__
+	(void) &err;
+#endif
+
+	if (setjmp(jmploc.loc))
+		err = 1;
+	else {
+		psh->handler = &jmploc;
+		setvar(psh, name, val, flags);
+	}
+	psh->handler = savehandler;
+	return err;
+}
+
+/*
+ * Set the value of a variable.  The flags argument is ored with the
+ * flags of the variable.  If val is NULL, the variable is unset.
+ */
+
+void
+setvar(shinstance *psh, const char *name, const char *val, int flags)
+{
+	const char *p;
+	const char *q;
+	char *d;
+	size_t len;
+	int namelen;
+	char *nameeq;
+	int isbad;
+
+	isbad = 0;
+	p = name;
+	if (! is_name(*p))
+		isbad = 1;
+	p++;
+	for (;;) {
+		if (! is_in_name(*p)) {
+			if (*p == '\0' || *p == '=')
+				break;
+			isbad = 1;
+		}
+		p++;
+	}
+	namelen = (int)(p - name);
+	if (isbad)
+		error(psh, "%.*s: bad variable name", namelen, name);
+	len = namelen + 2;		/* 2 is space for '=' and '\0' */
+	if (val == NULL) {
+		flags |= VUNSET;
+	} else {
+		len += strlen(val);
+	}
+	d = nameeq = ckmalloc(psh, len);
+	q = name;
+	while (--namelen >= 0)
+		*d++ = *q++;
+	*d++ = '=';
+	*d = '\0';
+	if (val)
+		scopy(val, d);
+	setvareq(psh, nameeq, flags);
+}
+
+
+
+/*
+ * Same as setvar except that the variable and value are passed in
+ * the first argument as name=value.  Since the first argument will
+ * be actually stored in the table, it should not be a string that
+ * will go away.
+ */
+
+void
+setvareq(shinstance *psh, char *s, int flags)
+{
+	struct var *vp, **vpp;
+	int nlen;
+
+#if defined(_MSC_VER) || defined(_WIN32)
+	/* On Windows PATH is often spelled 'Path', correct this here.  */
+	if (   s[0] == 'P'
+	    && s[1] == 'a'
+	    && s[2] == 't'
+	    && s[3] == 'h'
+	    && (s[4] == '\0' || s[4] == '=') ) {
+		s[1] = 'A';
+		s[2] = 'T';
+		s[3] = 'H';
+	}
+#endif
+
+	if (aflag(psh))
+		flags |= VEXPORT;
+	vp = find_var(psh, s, &vpp, &nlen);
+	if (vp != NULL) {
+		if (vp->flags & VREADONLY)
+			error(psh, "%.*s: is read only", vp->name_len, s);
+		if (flags & VNOSET)
+			return;
+		INTOFF;
+
+		if (vp->func && (flags & VNOFUNC) == 0)
+			(*vp->func)(psh, s + vp->name_len + 1);
+
+		if ((vp->flags & (VTEXTFIXED|VSTACK)) == 0)
+			ckfree(psh, vp->text);
+
+		vp->flags &= ~(VTEXTFIXED|VSTACK|VUNSET);
+		vp->flags |= flags & ~VNOFUNC;
+		vp->text = s;
+#ifdef PC_OS2_LIBPATHS
+		if ((vp->flags & VOS2LIBPATH) && (vp->flags & VEXPORT))
+			vp->flags &= ~VEXPORT;
+#endif
+
+		/*
+		 * We could roll this to a function, to handle it as
+		 * a regular variable function callback, but why bother?
+		 */
+		if (vp == &psh->vmpath || (vp == &psh->vmail && ! mpathset(psh)))
+			chkmail(psh, 1);
+		INTON;
+		return;
+	}
+	/* not found */
+	if (flags & VNOSET)
+		return;
+
+	vp = ckmalloc(psh, sizeof (*vp));
+	vp->flags = flags & ~VNOFUNC;
+	vp->text = s;
+	vp->name_len = nlen;
+	vp->next = *vpp;
+	vp->func = NULL;
+	*vpp = vp;
+}
+
+
+
+/*
+ * Process a linked list of variable assignments.
+ */
+
+void
+listsetvar(shinstance *psh, struct strlist *list, int flags)
+{
+	struct strlist *lp;
+
+	INTOFF;
+	for (lp = list ; lp ; lp = lp->next) {
+		setvareq(psh, savestr(psh, lp->text), flags);
+	}
+	INTON;
+}
+
+void
+listmklocal(shinstance *psh, struct strlist *list, int flags)
+{
+	struct strlist *lp;
+
+	for (lp = list ; lp ; lp = lp->next)
+		mklocal(psh, lp->text, flags);
+}
+
+
+/*
+ * Find the value of a variable.  Returns NULL if not set.
+ */
+
+char *
+lookupvar(shinstance *psh, const char *name)
+{
+	struct var *v;
+
+	v = find_var(psh, name, NULL, NULL);
+	if (v == NULL || v->flags & VUNSET)
+		return NULL;
+	return v->text + v->name_len + 1;
+}
+
+
+
+/*
+ * Search the environment of a builtin command.  If the second argument
+ * is nonzero, return the value of a variable even if it hasn't been
+ * exported.
+ */
+
+char *
+bltinlookup(shinstance *psh, const char *name, int doall)
+{
+	struct strlist *sp;
+	struct var *v;
+
+	for (sp = psh->cmdenviron ; sp ; sp = sp->next) {
+		if (strequal(sp->text, name))
+			return strchr(sp->text, '=') + 1;
+	}
+
+	v = find_var(psh, name, NULL, NULL);
+
+	if (v == NULL || v->flags & VUNSET || (!doall && !(v->flags & VEXPORT)))
+		return NULL;
+	return v->text + v->name_len + 1;
+}
+
+
+
+/*
+ * Generate a list of exported variables.  This routine is used to construct
+ * the third argument to execve when executing a program.
+ */
+
+char **
+environment(shinstance *psh)
+{
+	int nenv;
+	struct var **vpp;
+	struct var *vp;
+	char **env;
+	char **ep;
+
+	nenv = 0;
+	for (vpp = psh->vartab ; vpp < psh->vartab + VTABSIZE ; vpp++) {
+		for (vp = *vpp ; vp ; vp = vp->next)
+			if (vp->flags & VEXPORT)
+				nenv++;
+	}
+	ep = env = stalloc(psh, (nenv + 1) * sizeof *env);
+	for (vpp = psh->vartab ; vpp < psh->vartab + VTABSIZE ; vpp++) {
+		for (vp = *vpp ; vp ; vp = vp->next)
+			if (vp->flags & VEXPORT)
+				*ep++ = vp->text;
+	}
+	*ep = NULL;
+
+#ifdef PC_OS2_LIBPATHS
+	/*
+	 * Set the libpaths now as this is exec() time.
+	 */
+	for (nenv = 0; nenv < 3; nenv++)
+		DosSetExtLIBPATH(strchr(psh->libpath_vars[nenv].text, '=') + 1, nenv);
+#endif
+
+	return env;
+}
+
+
+/*
+ * Called when a shell procedure is invoked to clear out nonexported
+ * variables.  It is also necessary to reallocate variables of with
+ * VSTACK set since these are currently allocated on the stack.
+ */
+
+#ifdef mkinit
+void shprocvar(shinstance *psh);
+
+SHELLPROC {
+	shprocvar(psh);
+}
+#endif
+
+void
+shprocvar(shinstance *psh)
+{
+	struct var **vpp;
+	struct var *vp, **prev;
+
+	for (vpp = psh->vartab ; vpp < psh->vartab + VTABSIZE ; vpp++) {
+		for (prev = vpp ; (vp = *prev) != NULL ; ) {
+			if ((vp->flags & VEXPORT) == 0) {
+				*prev = vp->next;
+				if ((vp->flags & VTEXTFIXED) == 0)
+					ckfree(psh, vp->text);
+				if ((vp->flags & (VSTRFIXED | VSTRFIXED2)) == 0)
+					ckfree(psh, vp);
+			} else {
+				if (vp->flags & VSTACK) {
+					vp->text = savestr(psh, vp->text);
+					vp->flags &=~ VSTACK;
+				}
+				prev = &vp->next;
+			}
+		}
+	}
+	initvar(psh);
+}
+
+
+
+/*
+ * Command to list all variables which are set.  Currently this command
+ * is invoked from the set command when the set command is called without
+ * any variables.
+ */
+
+void
+print_quoted(shinstance *psh, const char *p)
+{
+	const char *q;
+
+	if (strcspn(p, "|&;<>()$`\\\"' \t\n*?[]#~=%") == strlen(p)) {
+		out1fmt(psh, "%s", p);
+		return;
+	}
+	while (*p) {
+		if (*p == '\'') {
+			out1fmt(psh, "\\'");
+			p++;
+			continue;
+		}
+		q = strchr(p, '\'');
+		if (!q) {
+			out1fmt(psh, "'%s'", p );
+			return;
+		}
+		out1fmt(psh, "'%.*s'", (int)(q - p), p );
+		p = q;
+	}
+}
+
+static int
+sort_var(const void *v_v1, const void *v_v2)
+{
+	const struct var * const *v1 = v_v1;
+	const struct var * const *v2 = v_v2;
+
+	/* XXX Will anyone notice we include the '=' of the shorter name? */
+	return strcoll((*v1)->text, (*v2)->text);
+}
+
+/*
+ * POSIX requires that 'set' (but not export or readonly) output the
+ * variables in lexicographic order - by the locale's collating order (sigh).
+ * Maybe we could keep them in an ordered balanced binary tree
+ * instead of hashed lists.
+ * For now just roll 'em through qsort for printing...
+ */
+
+int
+showvars(shinstance *psh, const char *name, int flag, int show_value)
+{
+	struct var **vpp;
+	struct var *vp;
+	const char *p;
+
+	static struct var **list;	/* static in case we are interrupted */
+	static int list_len;
+	int count = 0;
+
+	if (!list) {
+		list_len = 32;
+		list = ckmalloc(psh, list_len * sizeof(*list));
+	}
+
+	for (vpp = psh->vartab ; vpp < psh->vartab + VTABSIZE ; vpp++) {
+		for (vp = *vpp ; vp ; vp = vp->next) {
+			if (flag && !(vp->flags & flag))
+				continue;
+			if (vp->flags & VUNSET && !(show_value & 2))
+				continue;
+			if (count >= list_len) {
+				list = ckrealloc(psh, list,
+					(list_len << 1) * sizeof(*list));
+				list_len <<= 1;
+			}
+			list[count++] = vp;
+		}
+	}
+
+	qsort(list, count, sizeof(*list), sort_var);
+
+	for (vpp = list; count--; vpp++) {
+		vp = *vpp;
+		if (name)
+			out1fmt(psh, "%s ", name);
+		for (p = vp->text ; *p != '=' ; p++)
+			out1c(psh, *p);
+		if (!(vp->flags & VUNSET) && show_value) {
+			out1fmt(psh, "=");
+			print_quoted(psh, ++p);
+		}
+		out1c(psh, '\n');
+	}
+	return 0;
+}
+
+
+
+/*
+ * The export and readonly commands.
+ */
+
+int
+exportcmd(shinstance *psh, int argc, char **argv)
+{
+	struct var *vp;
+	char *name;
+	const char *p;
+	int flag = argv[0][0] == 'r'? VREADONLY : VEXPORT;
+	int pflag;
+
+	pflag = nextopt(psh, "p") == 'p' ? 3 : 0;
+	if (argc <= 1 || pflag) {
+		showvars(psh, pflag ? argv[0] : 0, flag, pflag );
+		return 0;
+	}
+
+	while ((name = *psh->argptr++) != NULL) {
+		if ((p = strchr(name, '=')) != NULL) {
+			p++;
+		} else {
+			vp = find_var(psh, name, NULL, NULL);
+			if (vp != NULL) {
+				vp->flags |= flag;
+				continue;
+			}
+		}
+		setvar(psh, name, p, flag);
+	}
+	return 0;
+}
+
+
+/*
+ * The "local" command.
+ */
+
+int
+localcmd(shinstance *psh, int argc, char **argv)
+{
+	char *name;
+
+	if (! in_function(psh))
+		error(psh, "Not in a function");
+	while ((name = *psh->argptr++) != NULL) {
+		mklocal(psh, name, 0);
+	}
+	return 0;
+}
+
+
+/*
+ * Make a variable a local variable.  When a variable is made local, it's
+ * value and flags are saved in a localvar structure.  The saved values
+ * will be restored when the shell function returns.  We handle the name
+ * "-" as a special case.
+ */
+
+void
+mklocal(shinstance *psh, const char *name, int flags)
+{
+	struct localvar *lvp;
+	struct var **vpp;
+	struct var *vp;
+
+	INTOFF;
+	lvp = ckmalloc(psh, sizeof (struct localvar));
+	if (name[0] == '-' && name[1] == '\0') {
+		char *p;
+		p = ckmalloc(psh, sizeof_optlist);
+		lvp->text = memcpy(p, psh->optlist, sizeof_optlist);
+		vp = NULL;
+	} else {
+		vp = find_var(psh, name, &vpp, NULL);
+		if (vp == NULL) {
+			if (strchr(name, '='))
+				setvareq(psh, savestr(psh, name), VSTRFIXED|flags);
+			else
+				setvar(psh, name, NULL, VSTRFIXED|flags);
+			vp = *vpp;	/* the new variable */
+			lvp->text = NULL;
+			lvp->flags = VUNSET;
+		} else {
+			lvp->text = vp->text;
+			lvp->flags = vp->flags;
+			vp->flags |= VSTRFIXED|VTEXTFIXED;
+			if (name[vp->name_len] == '=')
+				setvareq(psh, savestr(psh, name), flags);
+		}
+	}
+	lvp->vp = vp;
+	lvp->next = psh->localvars;
+	psh->localvars = lvp;
+	INTON;
+}
+
+
+/*
+ * Called after a function returns.
+ */
+
+void
+poplocalvars(shinstance *psh)
+{
+	struct localvar *lvp;
+	struct var *vp;
+
+	while ((lvp = psh->localvars) != NULL) {
+		psh->localvars = lvp->next;
+		vp = lvp->vp;
+		TRACE((psh, "poplocalvar %s", vp ? vp->text : "-"));
+		if (vp == NULL) {	/* $- saved */
+			memcpy(psh->optlist, lvp->text, sizeof_optlist);
+			ckfree(psh, lvp->text);
+		} else if ((lvp->flags & (VUNSET|VSTRFIXED)) == VUNSET) {
+			(void)unsetvar(psh, vp->text, 0);
+		} else {
+			if (vp->func && (vp->flags & VNOFUNC) == 0)
+				(*vp->func)(psh, lvp->text + vp->name_len + 1);
+			if ((vp->flags & VTEXTFIXED) == 0)
+				ckfree(psh, vp->text);
+			vp->flags = lvp->flags;
+			vp->text = lvp->text;
+		}
+		ckfree(psh, lvp);
+	}
+}
+
+
+int
+setvarcmd(shinstance *psh, int argc, char **argv)
+{
+	if (argc <= 2)
+		return unsetcmd(psh, argc, argv);
+	else if (argc == 3)
+		setvar(psh, argv[1], argv[2], 0);
+	else
+		error(psh, "List assignment not implemented");
+	return 0;
+}
+
+
+/*
+ * The unset builtin command.  We unset the function before we unset the
+ * variable to allow a function to be unset when there is a readonly variable
+ * with the same name.
+ */
+
+int
+unsetcmd(shinstance *psh, int argc, char **argv)
+{
+	char **ap;
+	int i;
+	int flg_func = 0;
+	int flg_var = 0;
+	int ret = 0;
+
+	while ((i = nextopt(psh, "evf")) != '\0') {
+		if (i == 'f')
+			flg_func = 1;
+		else
+			flg_var = i;
+	}
+	if (flg_func == 0 && flg_var == 0)
+		flg_var = 1;
+
+	for (ap = psh->argptr; *ap ; ap++) {
+		if (flg_func)
+			ret |= unsetfunc(psh, *ap);
+		if (flg_var)
+			ret |= unsetvar(psh, *ap, flg_var == 'e');
+	}
+	return ret;
+}
+
+
+/*
+ * Unset the specified variable.
+ */
+
+int
+unsetvar(shinstance *psh, const char *s, int unexport)
+{
+	struct var **vpp;
+	struct var *vp;
+
+	vp = find_var(psh, s, &vpp, NULL);
+	if (vp == NULL)
+		return 1;
+
+	if (vp->flags & VREADONLY)
+		return (1);
+
+	INTOFF;
+	if (unexport) {
+		vp->flags &= ~VEXPORT;
+	} else {
+		if (vp->text[vp->name_len + 1] != '\0')
+			setvar(psh, s, nullstr, 0);
+		vp->flags &= ~VEXPORT;
+		vp->flags |= VUNSET;
+		if ((vp->flags & (VSTRFIXED | VSTRFIXED2)) == 0) {
+			if ((vp->flags & VTEXTFIXED) == 0)
+				ckfree(psh, vp->text);
+			*vpp = vp->next;
+			ckfree(psh, vp);
+		}
+	}
+	INTON;
+	return 0;
+}
+
+
+/*
+ * Returns true if the two strings specify the same varable.  The first
+ * variable name is terminated by '='; the second may be terminated by
+ * either '=' or '\0'.
+ */
+
+STATIC int
+strequal(const char *p, const char *q)
+{
+	while (*p == *q++) {
+		if (*p++ == '=')
+			return 1;
+	}
+	if (*p == '=' && *(q - 1) == '\0')
+		return 1;
+	return 0;
+}
+
+/*
+ * Search for a variable.
+ * 'name' may be terminated by '=' or a NUL.
+ * vppp is set to the pointer to vp, or the list head if vp isn't found
+ * lenp is set to the number of charactets in 'name'
+ */
+
+STATIC struct var *
+find_var(shinstance *psh, const char *name, struct var ***vppp, int *lenp)
+{
+	unsigned int hashval;
+	int len;
+	struct var *vp, **vpp;
+	const char *p = name;
+
+	hashval = 0;
+	while (*p && *p != '=')
+		hashval = 2 * hashval + (unsigned char)*p++;
+	len = (int)(p - name);
+
+	if (lenp)
+		*lenp = len;
+	vpp = &psh->vartab[hashval % VTABSIZE];
+	if (vppp)
+		*vppp = vpp;
+
+	for (vp = *vpp ; vp ; vpp = &vp->next, vp = *vpp) {
+		if (vp->name_len != len)
+			continue;
+		if (memcmp(vp->text, name, len) != 0)
+			continue;
+		if (vppp)
+			*vppp = vpp;
+		return vp;
+	}
+	return NULL;
+}
diff --git a/src/kash/var.h b/src/kash/var.h
new file mode 100644
index 0000000..b524398
--- /dev/null
+++ b/src/kash/var.h
@@ -0,0 +1,153 @@
+/*	$NetBSD: var.h,v 1.23 2004/10/02 12:16:53 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)var.h	8.2 (Berkeley) 5/4/95
+ */
+
+#ifndef ___var_h___
+#define ___var_h___
+
+/*
+ * Shell variables.
+ */
+
+/* flags */
+#define VEXPORT		0x01	/* variable is exported */
+#define VREADONLY	0x02	/* variable cannot be modified */
+#define VSTRFIXED	0x04	/* variable struct is statically allocated */
+#define VTEXTFIXED	0x08	/* text is statically allocated */
+#define VSTACK		0x10	/* text is allocated on the stack */
+#define VUNSET		0x20	/* the variable is not set */
+#define VNOFUNC		0x40	/* don't call the callback function */
+#define VNOSET		0x80	/* do not set variable - just readonly test */
+#define VSTRFIXED2      0x4000  /* variable struct is in the shinstance, cannot be freed. (VSTRFIXED is mixed up in local vars) */
+#ifdef PC_OS2_LIBPATHS
+#define VOS2LIBPATH     0x8000  /* OS/2 LIBPATH related variable. */
+#endif
+
+
+struct var {
+	struct var *next;		/* next entry in hash list */
+	int flags;			/* flags are defined above */
+	char *text;			/* name=value */
+	int name_len;			/* length of name */
+	void (*func)(struct shinstance *, const char *);
+					/* function to be called when  */
+					/* the variable gets set/unset */
+};
+
+
+struct localvar {
+	struct localvar *next;		/* next local variable in list */
+	struct var *vp;			/* the variable that was made local */
+	int flags;			/* saved flags */
+	char *text;			/* saved text */
+};
+
+/*
+struct localvar *localvars;
+
+#if ATTY
+extern struct var vatty;
+#endif
+extern struct var vifs;
+extern struct var vmail;
+extern struct var vmpath;
+extern struct var vpath;
+#ifdef _MSC_VER
+extern struct var vpath2;
+#endif
+extern struct var vps1;
+extern struct var vps2;
+extern struct var vps4;
+#ifndef SMALL
+extern struct var vterm;
+extern struct var vtermcap;
+extern struct var vhistsize;
+#endif
+*/
+
+/*
+ * The following macros access the values of the above variables.
+ * They have to skip over the name.  They return the null string
+ * for unset variables.
+ */
+
+#define ifsval(psh)	((psh)->vifs.text + 4)
+#define ifsset(psh)	(((psh)->vifs.flags & VUNSET) == 0)
+#define mailval(psh)	((psh)->vmail.text + 5)
+#define mpathval(psh)	((psh)->vmpath.text + 9)
+#ifdef _MSC_VER
+# define pathval(psh)	((psh)->vpath.text[5] || !(psh)->vpath2.text ? &(psh)->vpath.text[5] : &(psh)->vpath2.text[5])
+#else
+# define pathval(psh)	((psh)->vpath.text + 5)
+#endif
+#define ps1val(psh)	((psh)->vps1.text + 4)
+#define ps2val(psh)	((psh)->vps2.text + 4)
+#define ps4val(psh)	((psh)->vps4.text + 4)
+#define optindval(psh)	((psh)->voptind.text + 7)
+#ifndef SMALL
+#define histsizeval(psh) ((psh)->vhistsize.text + 9)
+#define termval(psh)	((psh)->vterm.text + 5)
+#endif
+
+#if ATTY
+#define attyset(psh)	(((psh)->vatty.flags & VUNSET) == 0)
+#endif
+#define mpathset(psh)	(((psh)->vmpath.flags & VUNSET) == 0)
+
+void initvar(struct shinstance *);
+#ifndef SH_FORKED_MODE
+void subshellinitvar(shinstance *, shinstance *);
+#endif
+void setvar(struct shinstance *, const char *, const char *, int);
+void setvareq(struct shinstance *, char *, int);
+struct strlist;
+void listsetvar(struct shinstance *, struct strlist *, int);
+char *lookupvar(struct shinstance *, const char *);
+char *bltinlookup(struct shinstance *, const char *, int);
+char **environment(struct shinstance *);
+void shprocvar(struct shinstance *);
+int showvars(struct shinstance *, const char *, int, int);
+int exportcmd(struct shinstance *, int, char **);
+int localcmd(struct shinstance *, int, char **);
+void mklocal(struct shinstance *, const char *, int);
+void listmklocal(struct shinstance *, struct strlist *, int);
+void poplocalvars(struct shinstance *);
+int setvarcmd(struct shinstance *, int, char **);
+int unsetcmd(struct shinstance *, int, char **);
+int unsetvar(struct shinstance *, const char *, int);
+int setvarsafe(struct shinstance *, const char *, const char *, int);
+void print_quoted(struct shinstance *, const char *);
+
+#endif
diff --git a/src/kmk/.gitignore b/src/kmk/.gitignore
new file mode 100644
index 0000000..0764966
--- /dev/null
+++ b/src/kmk/.gitignore
@@ -0,0 +1,62 @@
+# Development artifacts
+ID
+TAGS
+.*gdbinit
+.gdb_history
+*~
+#*
+.#*
+
+# Configure artifacts
+ABOUT-NLS
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache
+config.cache
+config.h
+config.h.in
+config.log
+config.status
+configure
+stamp-h1
+
+# Build artifacts
+.deps
+gmk-default.h
+loadavg
+make
+*.o
+*.exe
+*.dll.a
+*.obj
+*.lib
+*.pdb
+*.sbr
+
+# Windows build artifacts
+WinDebug/
+WinRel/
+GccDebug/
+GccRel/
+
+# Distribution artifacts
+.dep_segment
+.check-git-HEAD
+ChangeLog
+Makefile.DOS
+NMakefile
+README
+README.DOS
+README.OS2
+README.W32
+SMakefile
+build.sh
+build.sh.in
+config.ami
+config.h-vms
+config.h.W32
+configh.dos
+make-[0-9]*/
+make-[0-9]*.tar.*
+checkcfg.*.log
diff --git a/src/kmk/.purify b/src/kmk/.purify
new file mode 100644
index 0000000..dc1b1d9
--- /dev/null
+++ b/src/kmk/.purify
@@ -0,0 +1,12 @@
+# Solaris (2.5.1) has a couple if issues.
+#
+suppress plk malloc; setvbuf "libc*"; main "main.c"
+suppress umr kstat_read; kstat_chain_update; kstat_open; getloadavg
+suppress umr kstat_chain_update; kstat_open; getloadavg
+
+# The command line options stuff leaks a little bit.  No big deal.
+#
+suppress mlk malloc; xmalloc "misc.c"; decode_env_switches "main.c"
+suppress plk malloc; xmalloc "misc.c"; decode_env_switches "main.c"
+suppress mlk malloc; xmalloc "misc.c"; concat "misc.c"; decode_env_switches "main.c"
+suppress plk malloc; xmalloc "misc.c"; concat "misc.c"; decode_env_switches "main.c"
diff --git a/src/kmk/AUTHORS b/src/kmk/AUTHORS
new file mode 100644
index 0000000..9b6212f
--- /dev/null
+++ b/src/kmk/AUTHORS
@@ -0,0 +1,88 @@
+-----------------------------------
+
+GNU make development up to version 3.75 by:
+    Roland McGrath <roland@gnu.org>
+
+
+Development starting with GNU make 3.76 by:
+    Paul D. Smith <psmith@gnu.org>
+
+    Additional development starting with GNU make 3.81 by:
+        Boris Kolpackov <boris@kolpackov.net>
+
+
+GNU Make User's Manual
+  Written by:
+    Richard M. Stallman <rms@gnu.org>
+
+  Edited by:
+    Roland McGrath <roland@gnu.org>
+    Bob Chassell <bob@gnu.org>
+    Melissa Weisshaus <melissa@gnu.org>
+    Paul D. Smith <psmith@gnu.org>
+
+-----------------------------------
+GNU make porting efforts:
+
+  Port to VMS by:
+      Klaus Kaempf <kkaempf@progis.de>
+      Hartmut Becker <Hartmut.Becker@hp.com>
+      Archive support/Bug fixes by:
+        John W. Eaton <jwe@bevo.che.wisc.edu>
+        Martin Zinser <zinser@decus.decus.de>
+
+  Port to Amiga by:
+      Aaron Digulla <digulla@fh-konstanz.de>
+
+  Port to MS-DOS (DJGPP), OS/2, and MS-Windows (native/MinGW) by:
+      DJ Delorie <dj@delorie.com>
+      Rob Tulloh <rob_tulloh@tivoli.com>
+      Eli Zaretskii <eliz@gnu.org>
+      Jonathan Grant <jg@jguk.org>
+      Andreas Beuning <andreas.buening@nexgo.de>
+      Earnie Boyd <earnie@uses.sf.net>
+      Troy Runkel <Troy.Runkel@mathworks.com>
+
+-----------------------------------
+Other contributors:
+
+  Janet Carson <janet_carson@tivoli.com>
+  Howard Chu <hyc@highlandsun.com>
+  Ludovic Courtès <ludo@gnu.org>
+  Paul Eggert <eggert@twinsun.com>
+  Ramon Garcia Fernandez <ramon.garcia.f@gmail.com>
+  Klaus Heinz <kamar@ease.rhein-main.de>
+  Michael Joosten
+  Jim Kelton <jim_kelton@tivoli.com>
+  David Lubbren <uhay@rz.uni-karlsruhe.de>
+  Tim Magill <tim.magill@telops.gte.com>
+  Markus Mauhart <qwe123@chello.at>
+  Greg McGary <greg@mcgary.org>
+  Thien-Thi Nguyen <ttn@gnuvola.org>
+  Thomas Riedl <thomas.riedl@siemens.com>
+  Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+  Carl Staelin (Princeton University)
+  Ian Stewartson (Data Logic Limited)
+  David A. Wheeler <dwheeler@dwheeler.com>
+  David Boyce <dsb@boyski.com>
+  Frank Heckenbach <f.heckenbach@fh-soft.de>
+
+With suggestions/comments/bug reports from a cast of ... well ...
+hundreds, anyway :)
+
+-------------------------------------------------------------------------------
+Copyright (C) 1997-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/COPYING b/src/kmk/COPYING
new file mode 100644
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+++ b/src/kmk/COPYING
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/src/kmk/ChangeLog.1 b/src/kmk/ChangeLog.1
new file mode 100644
index 0000000..c37b139
--- /dev/null
+++ b/src/kmk/ChangeLog.1
@@ -0,0 +1,4997 @@
+Tue Oct 29 20:57:36 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.
+
+	* remake.c (update_file_1): Check for deps still running before
+	giving up if any dep has failed.
+
+Sat Oct 26 16:20:00 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* make.h [uts]: #undef S_ISREG and S_ISDIR if defined.
+
+Fri Oct 25 19:50:39 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.60.17.
+
+Thu Oct 24 16:58:36 1991  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)
+
+	* job.c (start_job): Don't check for empty cmds before tweaking the
+	command_ptr.  Just let construct_command_argv do it.
+
+Tue Oct 22 20:21:03 1991  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)
+
+	* remake.c, arscan.c [POSIX]: <fcntl.h> instead of <sys/file.h>.
+
+	* make.h [POSIX]: Declare vfork as pid_t.
+
+Mon Oct 21 15:37:30 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.60.16.
+
+	* job.c (construct_command_argv, construct_command_argv_internal):
+	Take new 2nd arg RESTP.  If non-NULL, stop parsing at newline, and
+	store addr of the NL in *RESTP.
+	(start_job): Don't chop expanded cmd lines up; use above code to do it.
+	* function.c (expand_function: `shell'): Pass RESTP==NULL.
+
+Sat Oct 19 15:36:34 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.60.15.
+
+Fri Oct 18 15:26:55 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (start_job): If on the same cmds->command_lines elt, look
+	at cmds->lines_recurse[CHILD->command_line - 1] instead of
+	[CHILD->command_line].
+
+	* dir.c [sgi]: <sys/dir.h>, not ndir or anything else.
+
+Thu Oct 17 16:28:55 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* file.c (print_file_data_base): Remove unused var.
+
+	* make.h [NeXT]: No #define ANSI_STRING.
+
+Tue Oct 15 20:08:41 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.60.14.
+
+Fri Oct 11 16:23:52 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* make.h: Use PATH_MAX for getwd defn.
+
+	* make.h: Move getcwd/getwd outside of #ifndef POSIX, and make it
+	#if USG||POSIX.
+
+Thu Oct 10 11:53:31 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.60.13.
+
+	* read.c (read_all_makefiles): When processing MAKEFILES, save the
+	malloc'd ptr to be freed, instead of freeing part-way thru it.
+
+	* remake.c (update_file_1): Don't tweak FILE->also_make.
+	(update_file): Do it here.  After calling update_file_1, set the
+	command_state, update_status, and updated members of each also_make
+	elt to FILE's values.
+
+Tue Oct  8 14:56:04 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* Version 3.60.12.
+
+	* remake.c (notice_finished_file): Set command_state of FILE and
+	its also_make chain to cs_finished here.
+	* commands.c (execute_file_commands), job.c (child_handler),
+	remake.c (remake_file): Don't set it before calling
+	notice_finished_file.
+
+	* file.h (struct file): Changed `also_make' to struct dep *.
+	* job.c (delete_child_targets), file.c (print_file_data_base),
+	remake.c (notice_finished_file), implicit.c (pattern_search):
+	Use dep chain instead of array of file names.
+
+Mon Oct  7 17:04:33 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.60.11.
+
+	* arscan.c: Declare open.
+	* misc.c: Declare {get,set}{re,}[ug]id.
+	* variable.c (target_environment): Declare getenv.
+
+Sat Oct  5 15:13:03 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* make.h [NeXT]: <string.h> instead of <strings.h>.
+
+Fri Oct  4 16:05:41 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* default.c (default_suffixes, defualt_suffix_rules): Add .texi
+	just like .texinfo.
+
+	* Version 3.60.10.
+
+	* job.c: Move vfork decl into make.h.
+
+Fri Sep 27 18:45:30 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* compatMakefile (glob/libglob.a): Pass CC value to submake.
+
+Thu Sep 26 00:08:15 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* load.c (load_average): Made not static.
+
+	* load.c [ultrix && vax]: Define LDAV_TYPE and LDAV_CVT for Ultrix 4.2.
+
+Tue Sep 24 00:17:20 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.60.9.
+
+	* read.c (record_files): Warn about extra cmds even if the target's
+	name begins with a dot.  I think the lusers can handle this.
+
+Mon Sep 23 22:33:26 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* make.h, arscan.c: Don't declare bcmp, bzero, or bcopy if they're
+	#define'd.
+	* make.h: Declare write and open.
+
+	* default.c (default_suffixes, default_suffix_rules,
+	default_variables): Add .C just like .cc.
+	* make.texinfo (Catalogue of Rules): Document .C.
+
+	* make.man (-w): Fix gramo.
+
+Fri Sep 20 17:18:16 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* make.h: No text after #endif.
+
+Sun Sep 15 16:20:46 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* Version 3.60.8.
+
+	* implicit.c (pattern_search): In the second pass, recurse on rule
+	deps that don't have a %.  Why did I make it not do this?
+
+Fri Sep 14 18:29:39 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* read.c (record_files): For extra cmds, use the last ones given.
+	If the target's name doesn't begin with a dot (bletch!!), emit a
+	two-line warning, one line giving the old cmds' location and the
+	other the new cmds' location.
+
+	* misc.c (makefile_error, makefile_fatal): New fns.
+	* make.h: Declare them.
+	* Use them instead of error/fatal for all msgs including a file
+	name and line number.
+
+Thu Sep 13 16:35:54 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* make.h: Declare define_default_variables.
+	Declare ar_parse_name, instead of ar_name_parse (M-t).
+
+Mon Sep 10 18:35:40 1991  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)
+
+	* Version 3.60.7.
+
+	* make.texinfo (Variables: Setting): Say whitespace is removed if
+	"immediately after =", rather than simply "after =".
+
+	* job.c: Don't declare wait #ifdef POSIX.
+
+	* make.h [__GNUC__]: #undef alloca and then #define it.
+
+	* main.c (main): When pruning makefiles which might loop from the
+	read_makefiles chain, look at all `prev' entries of double-colon rules.
+
+Fri Sep  7 00:41:53 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* main.c (main): Only remove makefiles with cmds but no deps from
+	the list of makefiles to be rebuilt if they are :: targets.
+	: targets with cmds and no deps are not dangerous.
+
+Wed Sep  5 17:35:51 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile (defines): Add comment that some compilers take
+	ENUM_BITFIELDS but produce bogus code.
+	(LOAD_AVG): Fix examples to \ "s.
+	(LOADLIBES): Add comment that SGI Irix needs -lmld for nlist.
+
+Tue Sep  4 20:26:26 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.60.6.
+
+Fri Aug 30 19:34:04 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* remake.c (update_file_1): When checking the command_state of
+	deps, check through the prev chain.
+	(update_goal_chain): When a target is finished, start checking its
+	prev (if it has one) instead.
+
+Wed Aug  7 17:32:03 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* rule.c (convert_to_pattern): Allow files with deps to define
+	suffix rules (really this time).
+
+Mon Aug  5 17:09:21 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* misc.c (user_access, make_access): Do saved-IDs (USG) flavor
+	#ifdef POSIX.
+
+	* file.c (enter_file): Strip ./s here.
+	* read.c (parse_file_seq): Not here.
+
+Tue Jul 23 23:34:30 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile: Added comment that -lPW alloca is broken on HPUX.
+
+Thu Jul 18 03:10:41 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.60.5.
+
+	* read.c (read_makefile): Ignore lines containing chars that are
+	all isspace, not just all isblank.
+
+	* make.texinfo (Copying): @include gpl.texinfo, rather than copying
+	the text.
+	* gpl.texinfo: New file (symlink to /gd/gnu/doc/gpl.texinfo).
+	* GNUmakefile: Put gpl.texinfo in distribution.
+
+Tue Jul 16 12:50:35 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* make.h: #define _GNU_SOURCE before including headers.
+	Include <ctype.h> and define isblank if <ctype.h> doesn't.
+	* commands.c: Don't include <ctype.h> here.
+	* *.c: Use isblank instead of explicit ' ' || '\t'.
+
+Mon Jul 15 17:43:38 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* function.c (expand_function: `filter'/`filter-out'): Fixed to not
+	loop infinitely.
+
+Fri Jul 12 12:18:12 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* function.c (expand_function: `filter'/`filter-out'): Rewritten to
+	handle filter-out of multiple patterns properly.  Also no longer
+	mallocs and reallocs for temp array; uses alloca and a linked-list
+	instead.
+
+Wed Jul 10 22:34:54 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.60.4.
+
+	* make.texinfo: Moved some @groups that were outside @examples to
+	be inside them.
+
+	* load.c [apollo] (load_average): Define using special syscall for
+	Apollo DOMAIN/OS SR10.n.
+
+Thu Jul  4 12:32:53 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* make.texinfo (Missing): Added Unix excessive implicit rule
+	search; mention that POSIX.2 doesn't require any of the missing
+	features.
+	(Top): Updated printed manual price to $15.
+
+Wed Jul  3 18:17:50 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* file.c (rename_file): Carry over last_mtime when merging files.
+	* remake.c (f_mtime): Tail-recurse after renaming VPATH file, to
+	check for saved date in existing renamed-to file.
+
+	* remote-cstms.c (start_remote_job): Use PATH_VAR.
+
+	* commands.c [POSIX || __GNU_LIBRARY__]: Don't declare getpid.
+
+	* compatMakefile (glob-{clean,realclean}): Run clean/realclean in glob.
+	(clean, realclean): Require those.
+
+	* make.h: Always declare environ.
+	Don't declare old glob functions.
+
+	* GNUmakefile: Make no-lib deps for load.c and remote.c.
+
+Tue Jul  2 18:35:20 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.60.3.
+
+Mon Jul  1 16:58:30 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (multi_glob): Don't pass GLOB_QUOTE flag to glob.
+
+	* make.h [POSIX]: Include <unistd.h>, and don't declare things that
+	should be there.
+
+	* main.c (main) [USG && sgi]: malloc a buffer for broken sgi stdio.
+
+Sat Jun 29 11:22:21 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* function.c (expand_function: `shell'): Use alloca for the error
+	msg buffer, instead of assuming an arbitrary max size.
+
+Fri Jun 28 18:15:08 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c [POSIX] (search_path): Do real 1003.1 goop to get NGROUPS_MAX.
+
+Wed Jun 26 11:04:44 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* default.c (define_default_variables): New fn.
+	(install_default_implicit_rules): Code for above fn moved there.
+	* main.c (main): Do define_default_variables before reading the
+	makefile.
+
+Tue Jun 25 17:30:46 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* main.c (main): Quote ; in MAKEOVERRIDES.
+
+Tue Jun 18 13:56:30 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* compatMakefile: Fixed typo in comment.
+
+Tue Jun 11 00:14:59 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* Version 3.60.2.
+
+Mon Jun 10 14:46:37 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* make.h: Always include <sys/types.h>.
+	[POSIX]: Include <limits.h> and #define MAXPATHLEN to be PATH_MAX.
+
+	* default.c (default_suffix_rules: .texinfo.dvi): Use $(TEXI2DVI).
+	(default_variables): Define TEXI2DVI.
+
+Thu Jun  6 16:49:19 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.60.1.
+
+	* make.h (SIGNAL): Cast handler arg to SIGHANDLER type.
+
+Wed Jun  5 06:00:43 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* read.c (multi_glob): Use POSIX.2 `glob' function.
+	If a glob pattern matches nothing, leave it as is (a la sh, bash).
+	Also, if can't find USER for ~USER, leave it as is (a la bash).
+
+Mon Jun  3 16:36:00 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* compatMakefile: Rewrote comments about -Ds to be easier to use.
+
+	* make.h, arscan.c, remake.c, main.c, dir.c, job.c: Changed tests
+	of _POSIX_SOURCE to POSIX.
+
+	* job.c: Take getdtablesize out of #ifdef __GNU_LIBRARY__.
+	Put separately #ifdef USG.
+
+	* COPYING: Replaced with version 2.
+	* Changed copyright notices to refer to GPL v2.
+
+Thu May 30 00:31:11 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* make.h: Don't declare sigblock for POSIX.
+
+	* main.c (main, log_working_directory) [USG]: Get getcwd failure
+	mode from errno, not passed buffer like BSD getwd.
+
+	* misc.c (child_access): New fn to set access for a child process;
+	like user_access, but you can't change back.
+	* make.h: Declare it.
+	* job.c (exec_command): Use it in place of user_access.
+
+Wed May 29 23:28:48 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* default.c (default_variables) [pyr]: PC = pascal.
+
+Tue May 28 20:24:56 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* variable.c (print_variable): Put a newline before `endef'.
+
+Sat May 25 02:39:52 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.60.
+
+Wed May 22 19:41:37 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.59.5.
+
+Thu May 16 13:59:24 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* main.c (main): Do USGr3 setvbuf behavior #ifdef APOLLO.
+	Don't handle SIGCHLD #ifdef USG (Apollo is USG but defines SIGCHLD).
+
+Fri May 10 14:59:33 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* remake.c [sgi]: Don't include <sys/file.h>.
+
+Wed May  8 01:54:08 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* make.h (SIGHANDLER): #define as (void *) #if __STDC__,
+	else (int (*)()).
+	(SIGNAL): Use it to cast return value.
+	* main.c (main): Cast SIG_IGN to SIGHANDLER when comparing.
+	* job.c (block_signals, unblock_signals): Use SIGNAL instead of signal.
+
+	* main.c: Declare mktemp to return char*, not int.
+
+	* job.c (new_job): Don't increment files_remade.
+	* remake.c (notice_finished_file): Do it here.
+
+	* read.c (do_define): Don't clobber DEFINITION[-1] on empty defns.
+	Free storage that is no longer needed.
+
+Wed Apr 24 20:49:48 1991  Roland McGrath  (roland at churchy.gnu.ai.mit.edu)
+
+	* misc.c (message): New fn to print informational msgs with
+	leading "make: " or "make[N]: ".
+	* make.h: Declare it.
+	* remake.c (update_file): Use it instead of printf.
+
+Fri Apr 19 05:52:45 1991  Roland McGrath  (roland at churchy.gnu.ai.mit.edu)
+
+	* main.c (main): When there are no targets, if there were no
+	makefiles, print a different error message, which mentions makefiles.
+
+Tue Apr 16 03:22:45 1991  Roland McGrath  (roland at geech.gnu.ai.mit.edu)
+
+	* remake.c (update_file): Print "nothing to be done" instead of "is
+	up to date" if FILE->cmds == 0.
+
+	* job.c [!WIFEXITED]: Define if not already defined.
+
+Thu Apr 11 18:00:50 1991  Roland McGrath  (roland at wookumz.gnu.ai.mit.edu)
+
+	* arscan.c (ar_name_equal): Fixed truncation comparison.
+
+Tue Apr  2 16:17:35 1991  Roland McGrath  (roland at churchy.gnu.ai.mit.edu)
+
+	* glob.c: Use common version from djm.
+	* dir.c: Snarfed #ifdef mess for <dirent.h> or whatever from glob.c.
+	(dir_file_exists_p): Ignore directory entries with d_ino==0.
+
+Mon Apr  1 20:49:45 1991  Roland McGrath  (roland at albert.gnu.ai.mit.edu)
+
+	* Version 3.59.4.
+
+Fri Mar 29 19:16:18 1991  Roland McGrath  (roland at albert.gnu.ai.mit.edu)
+
+	* job.c (free_child): Free CHILD->environment and its elts.
+
+Sat Mar 23 14:08:09 1991  Roland McGrath  (roland at albert.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): Don't ignore lines containing only
+	comments if they start with a tab.  Such lines should be passed to
+	the shell for it to decide about the comments.
+
+	* job.c (free_child): Free CHILD->command_lines and its elts, not
+	CHILD->commands (which is obsolete).
+	* job.h, job.c: Remove obsolete `commands' member of `struct child'.
+
+Sun Mar 17 18:40:53 1991  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* remake.c (update_file): Print a msg for a top-level up-to-date
+	phony target (a different one than for a real file).
+
+	* read.c (conditional_line): Boundary check so we don't check the
+	value of the -1th elt of the stack (which is bogus).
+
+Sat Mar 16 16:58:47 1991  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* read.c (conditional_line): Don't evaluate an if* when we're
+	already ignoring.  Instead, just push a new level, with a value of
+	1, to keep ignoring.
+
+Tue Mar 12 00:16:52 1991  Roland McGrath  (roland at geech.ai.mit.edu)
+
+	* Version 3.59.3.
+
+Mon Mar 11 23:56:57 1991  Roland McGrath  (roland at geech.ai.mit.edu)
+
+	* job.c (construct_command_argv_internal): Quote backslashes
+	when building the shell -c line.
+
+Fri Mar  8 01:40:18 1991  Roland McGrath  (roland at geech.ai.mit.edu)
+
+	* job.c (exec_command): Call user_access rather than setgid(getgid()).
+
+	* misc.c (remove_comments): Renamed from collapse_line; took out
+	collapse_continuations call.
+	* make.h: Change decl.
+	* read.c (read_makefile): Collapse continuations on the line buffer
+	immediately after reading it.  Call remove_comments rather than
+	collapse_line (which is now defunct).
+
+Thu Feb 21 18:06:51 1991  Roland McGrath  (mcgrath at cygint.cygnus.com)
+
+	* misc.c (user_access, make_access): New fns to toggle btwn permissions
+	for user data (files and spawning children), and permissions for make
+	(for taking the load average, mostly).
+	* make.h: Declare them.
+	* job.c (start_job): Call make_access before wait_to_start_job, and
+	user_access after.
+	* main.c (main): Call user_access before doing much.
+
+Mon Feb  3 15:02:03 1991  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* Version 3.59.2.
+
+Tue Jan 29 20:30:50 1991  Roland McGrath  (roland at cygint.cygnus.com)
+
+	* read.c (read_all_makefiles): Use allocated_variable_expand to expand
+	`$(MAKEFILES)', since the results are used across calls to
+	read_makefile, which could clobber them.
+
+Wed Jan 23 00:24:10 1991  Roland McGrath  (roland at cygint.cygnus.com)
+
+	* main.c (main): Call install_default_implicit_rules after reading
+	makefiles, not before.
+	* default.c (install_default_implicit_rules): If a suffix-rule file
+	entry has cmds, don't give it any from default_suffix_rules.
+
+Fri Jan 17 17:39:49 1991  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* arscan.c: Added support for AIX archives.
+
+	* remake.c: Don't include ar.h.
+	* main.c: Removed unused atol decl.
+	* arscan.c (ar_scan): Declare arg FUNCTION to return long int.
+	* ar.c (ar_touch): Don't perror for an invalid archive.
+	* make.h: Declare lseek as long int.
+
+	* job.c [hpux]: Define getdtablesize a la USG.
+
+Sun Jan 12 21:08:34 1991  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* Version 3.59.1.
+
+Fri Jan 10 03:48:08 1991  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* job.c (search_path): Take new arg, place to put full pathname (rather
+	than mallocing it).
+	(exec_command): Pass it, using auto storage.
+
+	* main.c (print_version): Updated copyright years.
+
+Wed Jan  8 19:46:19 1991  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* job.c [_POSIX_SOURCE]: Just #include <sys/wait.h>, and define macro
+	WAIT_NOHANG in terms of waitpid.
+	[!_POSIX_SOURCE && (HAVE_SYS_WAIT || !USG)]: Don't #include <signal.h>
+	(make.h does).
+	Define macro WAIT_NOHANG in terms of wait3.
+	(child_handler): #ifdef on WAIT_NOHANG, not HAVE_SYS_WAIT || !USG.
+	Use WAIT_NOHANG macro instead of wait3.
+
+	* file.h (struct file.command_state): Remove unused elt.
+
+Wed Dec 26 18:10:26 1990  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* commands.c (set_file_variables): If FILE got its commands from
+	.DEFAULT, make $< == $@ (4.3 BSD/POSIX.2d11 compat).
+
+Mon Dec 24 17:36:27 1990  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* default.c (default_variables): Rename 2nd LINK.s defn to LINK.S.
+
+Fri Dec 14 15:05:25 1990  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* vpath.c (selective_vpath_search): Check for makefile-mentioned before
+	checking for actual existence.  The old order loses if the containing
+	directory doesn't exist (but a rule might make it).
+
+	* make.h [__GNUC__]: Don't #define alloca if already #define'd.
+
+	* rule.c (convert_to_pattern): Don't look at the target constructed for
+	the empty rule when making the null-suffix rule.  Construct it over
+	again, since the former may have been freed already.
+
+Thu Dec 13 17:21:03 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* make.h [__GNU_LIBRARY__]: Include <unistd.h> to get random fn decls.
+
+Wed Dec 12 17:12:59 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* make.h, arscan.c, glob.c: Only include <memory.h> #ifdef USG.
+
+	* variable.c (define_variable_in_set): Replace env_overrides check that
+	wasn't really redundant (undoing Sep 28 change).  Add comment saying
+	why this check is necessary.
+
+	* job.c, main.c [DGUX]: Needs siglist like USG.
+
+Mon Dec 11 01:19:29 1990  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* default.c [M_XENIX]: For rules that are different for Xenix, use the
+	generic Unix version #ifdef __GNUC__.
+
+	* main.c [M_XENIX]: Use USGr3-style setvbuf call.
+
+	* read.c (find_percent): Do backslash folding correctly, not leaving
+	extra crud on the end of the string.
+
+Sun Dec 10 21:48:36 1990  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* job.c: Don't declare wait3 if it's #defined.
+
+	* GNUmakefile, compatMakefile, make.texinfo: Change make-info
+	to make.info.
+
+Thu Dec  7 21:20:01 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* make.h [STDC_HEADERS || __GNU_LIBRARY__ || _POSIX_SOURCE]: Use
+	ANSI <string.h> and names for str/mem functions.
+	Use <stdlib.h> to declare misc fns rather than explicit decls.
+	[_POSIX_SOURCE]: Don't declare kill (<signal.h> will).
+	Include <sys/types.h> before <signal.h> because some braindead
+	nonconformant 1003.1 implementation needs it.
+	* misc.c: Don't declare malloc, realloc.  Do it in make.h.
+	* arscan.c, glob.c: Use sequence for string fns from make.h verbatim.
+	* make.h (S_ISDIR, S_ISREG): Declare if necessary.
+	* commands.c (delete_child_targets), job.c (search_path), read.c
+	(construct_include_path): Use S_ISfoo(m) instead of
+	(m & S_IFMT) == S_IFfoo.
+	* dir.c, glob.c [_POSIX_SOURCE]: Use dirent.
+
+Wed Nov 29 22:53:32 1990  Roland McGrath  (roland at geech.ai.mit.edu)
+
+	* Version 3.59.
+
+Tue Nov 28 16:00:04 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* arscan.c (ar_name_equal) [APOLLO]: Don't do `.o' hacking.  On Apollos
+	the full file name is elsewhere, and there is no length restriction (or
+	so I'm told).
+
+Thu Nov 23 17:33:11 1990  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* load.c [hp300 && BSD] (LDAV_CVT): Define for this system.
+
+Tue Nov 21 07:58:40 1990  Roland McGrath  (roland at albert.ai.mit.edu)
+
+	* read.c (record_files): Fix trivial bug with deciding to free storage
+	for a file name.
+
+Thu Nov 16 06:21:38 1990  Roland McGrath  (roland at geech.ai.mit.edu)
+
+	* compatMakefile ($(bindir)/make): Install it setgid kmem.
+
+Thu Nov  1 16:12:55 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* GNUmakefile (make-*.tar.Z): Use `h' option to tar (dereference
+	symlinks), to grab texinfo.tex from wherever it lives.
+
+Tue Oct 30 16:15:20 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* Version 3.58.13.
+
+Fri Oct 26 14:33:34 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* GNUmakefile: make-*.tar.Z: Include texinfo.tex.
+
+Tue Oct 23 19:34:33 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* main.c (define_makeflags): When there are no flags to write, make
+	sure the array has two leading nulls, since `MAKEFLAGS' is defined from
+	&flags[1].
+
+	* main.c (default_keep_going_flag): New variable (constant one).
+	(command_switches: -k, -S): Use above for default value.
+	(define_makeflags): Only write flag/flag_off switches if they are on,
+	and either there is no default value, or they are not the default.
+
+Mon Oct 22 16:14:44 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* main.c (struct command_switch): New member `no_makefile'.
+	(command_switches: -n, -q, -t): Set no_makefile == 1.
+	(define_makeflags): Take new arg MAKEFILE: if nonzero, don't use
+	options whose `no_makefile' flags are set.
+	(main): Call define_makeflags with MAKEFILE==1 before remaking
+	makefiles, and again with MAKEFILE==0 before remaking goals.
+
+Tue Oct  2 17:16:45 1990  Roland McGrath  (roland at geech.ai.mit.edu)
+
+	* Version 3.58.12.
+
+Mon Oct  1 15:43:23 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* arscan.c [HPUX]: Use PORTAR==1 format.
+
+Sat Sep 29 16:38:05 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* make.h, remake.c, arscan.c: Don't declare `open'.
+
+Fri Sep 28 04:46:23 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* variable.c (define_variable_in_set): Remove redundant -e check.
+
+Wed Sep 26 00:28:59 1990  Roland McGrath  (roland at geech.ai.mit.edu)
+
+	* job.c (start_job): Set RECURSIVE from the right elt of
+	CHILD->file->cmds->lines_recurse.
+
+	* commands.c (chop_commands): Don't botch the line count for allocating
+	CMDS->lines_recurse.
+
+	* Version 3.58.11.
+
+	* job.c (start_job): Don't always increment CHILD->command_line!  Only
+	do it when CHILD->command_ptr has run out!  (Dumb bug.  Sigh.)
+
+Thu Sep 20 02:18:51 1990  Roland McGrath  (roland at geech.ai.mit.edu)
+
+	* GNUmakefile [ARCH]: Give explicit rule for remote.{c,dep} to use
+	variable `REMOTE' for more flags.
+	($(prog)): Link in $(LOADLIBES).
+
+Wed Sep 19 02:30:36 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* commands.h (struct commands): New member `ncommand_lines', the number
+	of elts in `command_lines' et al.
+	* commands.c (chop_commands): Set `ncommand_lines' elt of CMDS, and
+	don't put a nil pointer at the end of `command_lines'.
+	* job.h (struct child): New member `command_lines' to hold
+	variable-expanded command lines.
+	* job.c (new_job): Store expanded command lines in `command_lines'
+	member of new child.  Don't clobber FILE->cmds.
+	(start_job): Use CHILD->command_lines in place of
+	CHILD->file->cmds->command_lines.
+
+	* variable.h, variable.c, job.c, expand.c: Undo yesterday's change,
+	which is no longer necessary since we have cleverly avoided the issue.
+
+	* job.c (start_job): Don't variable-expand each command line.
+	(new_job): Do them all here, storing the expansions in the array.
+
+Tue Sep 18 01:23:13 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* variable.h (struct variable): Remove `expanding' member.
+	* variable.c (define_variable_in_set): Don't initialize it.
+	* expand.c (struct variable_expanding): New type, a linked list
+	containing `struct variable' pointers.
+	(variables_expanding): New variable, the chain of variables currently
+	being expanded.
+	(recursively_expand): Don't test and set `expanding' member.
+	Instead, run through the `variables_expanding' chain looking for a link
+	referring to V to find self-reference.  Add a new link to the chain,
+	describing V, before recursive expansion, and pop it off afterward.
+	* job.c (child_handler): Save `variables_expanding' and clear it before
+	calling start_job, and restore it afterward.  This avoids major lossage
+	when the SIGCHLD comes in the middle of variable expansion.
+
+Mon Sep 17 14:46:26 1990  Roland McGrath  (roland at geech.ai.mit.edu)
+
+	* job.c, commands.c: Don't define sigmask.
+	* make.h: Put it here instead.
+
+	* variable.c (target_environment): If `.NOEXPORT' was specified as a
+	target, only export command-line and environment variables, and
+	file-origin variables that were in the original environment.
+
+	* make.man: Add missing ?roff control for `-I' option description.
+
+Thu Sep 13 14:10:02 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* load.c [UMAX]: Move #include <sys/sysdefs.h> to [not UMAX_43].
+
+Wed Sep 12 15:10:15 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* expand.c (recursively_expand): Don't use `reading_filename' and
+	`reading_lineno_ptr' if they're nil.
+
+Thu Aug 30 17:32:50 1990  Roland McGrath  (roland at geech)
+
+	* Version 3.58.10.
+
+Tue Aug 28 04:06:29 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* job.c [USG] (unknown_children_possible): New variable, set nonzero
+	when it's possible for children not in the `children' chain to die.
+	(block_signals) [USG]: Set it.
+	(unblock_signals) [USG]: Clear it.
+	(child_handler) [USG]: Don't complain about unknown children if
+	`unknown_children_possible' is set.
+
+	* read.c (do_define): Make sure there's enough space for the newline,
+	so we don't write off the end of allocated space.
+
+	* arscan.c (ar_name_equal): Fixed to work when MEM is AR_NAMELEN-1 but
+	NAME is not the same length.
+
+Sat Aug 25 16:17:14 1990  Roland McGrath  (roland at geech)
+
+	* job.c (construct_command_argv_internal): Use a static char array for
+	a constant, since old C has no auto aggregate initializers.
+
+Thu Aug 23 16:11:03 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* job.c (search_path): If PATH is nil or "" use a default path.
+
+Wed Aug 22 01:05:32 1990  Roland McGrath  (roland at churchy.ai.mit.edu)
+
+	* Version 3.58.9.
+
+	* job.c (exec_command): Don't take PATH and SHELL args.  Get them from
+	ENVP.
+	(child_execute_job): Don't take FILE arg, and don't pass path and shell
+	to exec_command.
+	(start_job): Don't pass FILE arg to child_execute_job.
+	* function.c (expand_function: `shell'): Ditto.
+	* main.c (main): Don't pass path and shell to exec_command.
+
+Fri Aug 17 23:17:27 1990  Roland McGrath  (roland at geech)
+
+	* job.c (construct_command_argv_internal): New fn broken out of
+	construct_command_argv.  Takes strings SHELL and IFS instead of doing
+	variable expansion for them.  Recurse to make an argv for SHELL,
+	passing SHELL==0.  When SHELL==0, don't recurse for shell argv; make a
+	simple one using /bin/sh.
+	(construct_command_argv): Do the variable expansions and call above.
+
+Thu Aug 16 19:03:14 1990  Roland McGrath  (roland at geech)
+
+	* read.c (multi_glob): For ~USER/FILE, if USER isn't found, don't
+	change the file name at all.
+
+Tue Aug  7 18:33:28 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* function.c (expand_function: `suffix'/`notdir'): Don't kill the last
+	space if we never wrote one.
+
+	* function.c (expand_function: `suffix'): Retain the dot, like the
+	documentation says.
+
+Mon Aug  6 14:35:06 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.58.8.
+
+	* main.c (decode_switches): For positive_int and floating cases, move
+	SW past the arg (and don't set it to ""), so another switch can follow.
+
+Fri Aug  3 00:43:15 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* job.c (child_execute_job): Use unblock_signals instead of
+	push_signals_blocked_p (0).
+
+	* main.c (fatal_signal_mask): New variable, mask of signals caught with
+	fatal_error_signal.
+	(main): Set it.
+	* job.c ({block,unblock}_children): Renamed to {block,unblock}_signals.
+	Block/unblock both child signal and signals in fatal_signal_mask.
+	(children_blocked_p_{stack,max,depth}, {push,pop}_children_blocked_p):
+	Renamed from children to signals.  Use {block,unblock}_signals instead
+	of {block,unblock}_children.
+	* commands.c (fatal_error_signal), job.c (wait_for_children, new_job,
+	child_execute_job, main, log_working_directory), function.c
+	(expand_function: `shell'), job.h: Rename {push,pop}_children_blocked_p
+	to {push,pop}_signals_blocked_p.
+	* job.c (child_handler): Call {block,unblock}_signals instead of just
+	{block,unblock}_remote_children.  We need to block the fatal signals.
+
+Thu Aug  2 22:41:06 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* main.c, function.c: Fixed typos in comments.
+
+	* file.c (print_file_data_base): Fix computation of avg files/bucket.
+
+Tue Jul 31 22:11:14 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.58.7.
+
+Wed Jul 25 16:32:38 1990  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* arscan.c (ar_name_equal): Fixed to really do it right.
+	(ar_member_pos): Fixed order of args.
+	* ar.c (ar_member_date_1): Ditto.
+
+Fri Jul 20 15:30:26 1990  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* arscan.c (ar_name_equal): Rewritten.  Accounts for a possible
+	trailing slash in MEM.
+
+	* remake.c (f_mtime): Keep track of whether ARNAME is used and free it
+	if not.  Also free MEMNAME.
+	* ar.c (ar_member_date, ar_touch): Ditto.
+
+	* arscan.c (arscan) [HPUX or hpux]: Treat same as USGr3 PORTAR==1.
+
+	* make.h: If NSIG is not defined, but _NSIG is, #define NSIG _NSIG.
+
+	* compatMakefile: Don't use $* in explicit rules.
+
+	* default.c (default_variables: "PREPROCESS.S"): Include $(CPPFLAGS).
+
+	* remake.c (f_mtime): If FILE is an ar ref, get the member modtime.
+
+	* function.c (string_glob): Terminate the string properly when it's
+	empty.
+
+Wed Jul 18 11:26:56 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.58.6.
+
+	* commands.c (set_file_variables): Fixed computation for ^F/?F elt len.
+
+Sat Jul 14 13:41:24 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* job.c (construct_command_argv): Always use
+	allocated_variable_expand_for_file instead of variable_expand_for_file
+	because we might be called from inside a variable expansion (for the
+	`shell' function).
+
+	* function.c (expand_function: `shell'): Free the arglist's storage
+	correctly.  construct_command_argv only allocates ARGV and ARGV[0].
+
+	* job.c (children_blocked_p_idx): Renamed to children_blocked_p_depth.
+	(push_children_blocked_p, pop_children_blocked_p): Use ..._depth
+	instead of ..._idx, and do it right!
+
+Wed Jul 11 15:35:43 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* make.h (SIGNAL): New macro to replace `signal' calls.  Does arg and
+	ret value casts to (void *) #ifdef __STDC__ to avoid conflicts btwn
+	ANSI and BSD `signal' and handler types.
+	* main.c (main), job.c (child_handler): Use it.
+
+Fri Jul  6 00:00:38 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* ar.c (ar_member_date, ar_touch): Pass 2nd arg to f_mtime.
+
+	* read.c (read_makefile): Search the include path for MAKEFILES
+	variable makefiles (TYPE == 1), like it says in the manual.
+
+	* file.h (struct file), main.c (struct command_switch): Remove trailing
+	commas from enums.
+
+	* commands.c (execute_file_commands): Remove unused variables.
+	* commands.h: Declare chop_commands.
+	* make.h: Declare uniquize_deps.
+	* main.c (main): Remove unused variable.
+	(decode_switches): Remove unused label.
+	* remake.c: Include "ar.h" for ar_parse_name decl.
+	* implicit.c (try_implicit_rule): Remove unused variable.
+	* function.c (expand_function: `shell'): Declare fork, pipe.
+	* ar.c: Declare ar_name_equal.
+
+	* GNUmakefile: If using gcc, add warning flags to CFLAGS.
+
+	* remake.c: Remove decl of ar_member_date, since it's done in make.h.
+
+	* remake.c (f_mtime): For ar refs, allow the archive to be found via
+	VPATH search if we're searching, and change the ar ref accordingly.
+
+	* ar.c (ar_parse_name): New global fn to parse archive-member
+	references into the archive and member names.
+	(ar_member_date, ar_touch): Use it.
+	* make.h: Declare it.
+
+	* remake.c (f_mtime): After doing rename_file, do check_renamed instead
+	of assuming rename_file will always set FILE->renamed (which it won't).
+
+	* vpath.c (selective_vpath_search): Only accept prospective files that
+	don't actually exist yet are mentioned in a makefile if the file we are
+	searching for isn't a target.
+
+Wed Jul  4 04:11:55 1990  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* remake.c (update_goal_chain): Do check_renamed after calling
+	file_mtime.
+	(check_dep): Ditto after update_file.
+
+	* file.c (rename_file): Prettied up long message for merging cmds.
+
+	* remake.c (update_file_1): Get each dep file's modtime, and allow for
+	it being renamed, before checking for a circular dep, since a renaming
+	may have introduced one.
+
+Tue Jul  3 18:15:01 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* ar.c (ar_touch): Don't free ARNAME since enter_file holds onto the
+	storage.
+
+	* function.c (string_glob): Don't leave a trailing space.
+
+	* read.c (do_define): Allow leading whitespace before `endef'.
+
+Mon Jul  2 14:10:16 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* implicit.c (pattern_search): No longer take NAME arg.  Instead take
+	ARCHIVE flag.  If ARCHIVE is nonzero, FILE->name is of the form
+	"LIB(MEMBER)"; rule for "(MEMBER)" is searched for, and LASTSLASH is
+	set to nil.  Since NAME was only non-nil when it was the archive member
+	name passed by try_implicit_rule, this change easily allows turning off
+	LASTSLASH checking for archive members without excessive kludgery.
+	(try_implicit_rule): Pass ARCHIVE flag instead of file name.
+
+	* Version 3.58.5.
+
+	* commands./c (set_file_variables): Don't kill last char of $(^D) elts.
+
+Sat Jun 30 00:53:38 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* ar.c (ar_member_date): Don't free ARNAME since enter_file holds onto
+	the storage.
+
+	* arscan.c (ar_scan) [sun386 && PORTAR == 1]: Treat like USGr3.
+
+Wed Jun 27 14:38:49 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* main.c (main): Put a newline on the debugging message when deciding
+	not to remake a makefile to avoid a possible loop.
+	Only decide not to remake makefiles that have commands (as well as
+	being targets and having no deps).
+
+Fri Jun 22 12:35:37 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* default.c (default_variables): Define `LINK.s' and `LINK.S'.
+	(default_suffix_rules): Define .S.o rule.
+
+	* job.c (construct_command_argv): If we decide to go the slow route,
+	free all storage for the chopped args.
+	(start_job): Free the argument list's storage correctly.
+	construct_command_argv only allocates ARGV and ARGV[0].
+
+Tue Jun 19 18:27:43 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.58.4.
+
+Fri Jun 15 21:12:10 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* glob.c: New version from ai-lab which doesn't do [^abc].
+
+Thu Jun  7 00:30:46 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* dir.c: Copied dirent vs direct et al mess from glob.c.
+
+	* glob.c: Replaced with updated version from djm.
+	* glob.c: Check macro DIRENT instead of _POSIX_SOURCE for <dirent.h>.
+	__GNU_LIBRARY__ implies DIRENT and STDC_HEADERS.
+
+Thu May 31 22:19:49 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* vpath.c (vpath_search): Don't stop the loop if a pattern matches but
+	the search fails.  All matching patterns have their paths searched
+	(like it says in the manual).
+
+	* make.texinfo (Rules: Directory Search: Selective Search): Say that
+	multiple `vpath' directives with the same pattern DO accumulate, not
+	supersede earlier ones.
+
+	* vpath.c (print_vpath_data_base): Increment the count of vpaths on
+	each loop iteration, rather than letting it stay zero.
+
+	* Version 3.58.3.
+
+	* job.c (block_children, unblock_children): Made static.
+	(push_children_blocked_p, pop_children_blocked_p): New functions to
+	push and pop whether children are blocked or not.
+	* job.h: Declare push_children_blocked_p, pop_children_blocked_p and
+	not block_children, unblock_children.
+	* commands.c (fatal_error_signal), job.c (wait_for_children, new_job,
+	child_execute_job), main.c (main, log_working_directory): Use sequences
+	of push_children_blocked_p (1) and pop_children_blocked_p () instead of
+	explicitly blocking and unblocking children.
+	* function.c (expand_function: `shell'): Don't unblock children.  The
+	push-pop sequence in wait_for_children makes it unnecessary.
+
+Tue May 29 21:30:00 1990  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* read.c (do_define): Don't include the last newline in the definition.
+
+	* function.c (expand_function: `shell'): Call construct_command_argv
+	before forking and don't fork if it returns nil.  Free the argument
+	list's storage before finishing.
+
+	* job.c (start_job): Free the storage for the child's argument list
+	in the parent side of the fork after the child has been spawned.
+
+	* job.c (start_job): If construct_command_argv returns nil, go to the
+	next command line.
+
+	* job.c (construct_command_argv): Use the shell if the command contains
+	an unterminated quote.
+
+Wed May 23 19:54:10 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.58.2.
+
+	* read.c (read_makefile): Parse "override define" correctly.
+
+Thu May 17 15:25:58 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* arscan.c [USG]: Don't declare memcpy and memcmp.  <memory.h> should
+	do this anyway (and lack of declarations is harmless).
+
+	* remote-customs.c: Renamed to remote-cstms.c for System V.
+	* remote.c [CUSTOMS]: Changed accordingly.
+
+Sun May 13 14:38:39 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* GNUmakefile: Use same cmds for doc tar.Z as for dist tar.Z (so the
+	contents go in make-N.NN).
+
+Thu Apr 26 19:33:25 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* Version 3.58.1.
+
+Wed Apr 25 20:27:52 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* job.c (init_siglist): Don't do SIGUSR1 and SIGUSR2 if they are the
+	same as SIGIO and SIGURG (true on Cray).
+
+Tue Apr 24 20:26:41 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* arscan.c (ar_scan): Do behavior for PORTAR == 1 and USGr3 also
+	#ifdef APOLLO.
+
+Wed Apr 11 10:00:39 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* job.c (exec_command): Set the effective GID to the real GID.  Somehow
+	this code got lost.
+
+	* implicit.c (pattern_search): Use the right index variable when
+	seeing if we need to expand FILE->also_make.
+
+Sun Mar  4 09:18:58 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* Version 3.58.0.
+
+	* remake.c (remake_file): Treat non-targets without commands under -t
+	the same as anything else without commands.
+
+Sat Feb 24 17:46:04 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* default.c (default_variables: PREPROCESS.S): Removed $< from defn.
+
+	* main.c (main): Ignore arguments that are the empty string, rather
+	than feeding them to enter_file and barfing therein.
+
+Wed Feb 14 16:28:37 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* main.c (main): Call construct_include_path after doing chdirs.
+
+Thu Feb  8 13:43:44 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* Version 3.58.
+
+Sat Feb  3 22:06:55 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* Version 3.57.7.
+
+	* make.texinfo (Implicit: Catalogue of Rules): For RCS, noted that
+	working files are never overwritten by the default rule.
+
+Thu Feb  1 17:27:54 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* rule.c (count_implicit_rule_limits): Redid loop control to not run
+	twice on freed rules.
+
+	* GNUmakefile: Made `.dep' files be architecture-specific too.
+
+	* main.c (main, log_working_directory) [USG]: Block children around
+	calls to `getwd' (actually `getcwd' on USG), because that function
+	sometimes spawns a child running /bin/pwd on USG.
+
+Tue Jan 30 14:02:50 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* function.c (subst_expand): Pay attention to SUFFIX_ONLY, putz.
+
+Wed Jan 24 21:03:29 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* make.man: Fixed repeated word.
+
+	* make.texinfo (Missing): Reworded a buggy sentence.
+
+Mon Jan 22 12:39:22 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* main.c (print_version): Added 1990 to copyright notice.
+
+	* Version 3.57.6.
+
+Sat Jan 20 11:52:01 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* file.c (rename_file): Don't free the storage for the old name, since
+	it might not have been malloc'd.
+
+	* job.c (construct_command_argv): Call
+	allocated_variable_expand_for_file instead of variable_expand_for_file
+	to expand `$(SHELL)'.
+
+	* make.texinfo (Bugs): Change address from roland@wheaties.ai.mit.edu
+	to roland@prep.ai.mit.edu.
+
+Tue Jan 16 19:22:33 1990  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* Version 3.57.5.
+
+Sun Jan 14 16:48:01 1990  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* job.c (start_job): Only call wait_to_start_job for the first command
+	line in each sequence.
+
+Thu Jan  4 14:27:20 1990  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* load.c [LDAV_BASED] (wait_to_start_job): Loop while job_slots_used >
+	0, not > 1.
+
+	* job.c (search_path): Don't return a pointer to local storage.
+	Allocate data space for the pathname instead.
+
+	* function.c (expand_function: `shell'): Don't write garbage if the
+	child wrote no output.
+
+Wed Jan  3 15:28:30 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.57.4.
+
+	* file.h (struct file): New member `renamed', a `struct file *' that is
+	the place this file has been renamed to (or nil).
+	(check_renamed): Macro to check for a file having been renamed.
+	Dereferences the renaming and sets the given variable.
+	* file.c (rename_file): Completely rewritten.  Renames in place if
+	possible, or moves FILE to a different hash bucket if there is no
+	existing file with the new name.  If there is an existing file with the
+	new name, FILE is merged into it and FILE->renamed is set to point to
+	it.
+	* variable.c (merge_variable_sets): New fn to merge two variable sets.
+	(merge_variable_set_lists): New fn to merge two variable set lists.
+	* variable.h: Declare merge_variable_set_lists.
+	* remake.c (update_file_1, check_dep): Run `check_renamed' after
+	calling file_mtime, check_dep.
+	(update_file): Same after update_file_1.
+	(update_goal_chain, update_file_1, check_dep): Same after update_file.
+
+	* read.c (uniquize_deps): New fn, broken out of record_files, to remove
+	duplicate deps from a chain.
+	(record_files): Use it.
+	* implicit.c (pattern_search): Use uniquize_deps.
+
+	* file.h (file_mtime_1): New macro, like file_mtime, but take second
+	arg, passed to f_mtime.
+	(file_mtime): Implement as file_mtime_1 (file, 1).
+	(file_mtime_no_search): New macro: file_mtime (file, 0).
+	* remake.c (f_mtime): Take new arg SEARCH.  Only do VPATH and `-lNAME'
+	searching if it is nonzero.
+	* main.c (main): Use file_mtime_no_search for makefiles.
+	* remake.c (update_goal_chain): Use file_mtime_no_search if MAKEFILES.
+
+	* main.c (printed_version): New variable, init'd to zero.
+	(print_version): Set it to nonzero before returning.
+	(die): If -v and !printed_version, call print_version before clean up
+	and death.
+
+	* main.c (log_working_directory): Keep track of whether or not the
+	"Entering" message has been printed, and return without printing the
+	"Leaving" message if not.
+
+	* main.c (decode_switches): Don't complain about missing args before
+	checking for a noarg_value elt in the command_switch structure.
+
+Tue Jan  2 15:41:08 1990  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* make.texinfo (Commands: Recursion: Options/Recursion): Document
+	special case of -j.
+
+	* make.texinfo, main.c, job.c: Changed copyright notices to include
+	1990.
+
+	* make.texinfo (Top): Fixed introductory paragraph, which said that
+	`make' itself (instead of the manual) has various chapters.
+	(Variables: Advanced: Substitution Refs): When pxref'ing about
+	`patsubst', use node `Text Functions', not `Functions'.
+	Add an xref about `patsubst' after description of $(var:a%b=c%d).
+	(Functions: Syntax of Functions): Explain why mixing delimiters in
+	function/var refs is unwise.  Clarify fn arg evaluation order.
+	(Options): Reworded sentence about `-e'.
+	(Implicit: Implicit Variables): Don't say `RM' is unused.
+	Say the dflt values for the flag vars is empty unless otherwise noted,
+	since some have defaults.
+	(Implicit: Pattern Rules: Pattern Examples): Clarified use of $< and $@
+	in first example.
+	(Implicit: Last Resort): Don't say the .DEFAULT example creates files
+	"silently".  It's automatic, but not silent.
+	(Implicit: Search Algorithm): Fixed confusing ungrammatical sentence
+	for item 5.1.
+	(Archives: Archive Update): Added missing `next' pointer.
+	(Archives: Archive Symbols): Note that GNU `ar' deals with this
+	automatically.
+
+	* job.c (search_path): New fn, to search for an executable file in a
+	search path (broken out of exec_command).
+	(exec_command): Take fourth arg, the shell program to use (if
+	necessary).  Use search_path for the program, and the shell program.
+	Pass args "file args ..." to shell program (with no -c), where FILE is
+	the full pathname of the program (script) to be run.
+	(child_execute_job): Pass shell program to exec_command.
+	* main.c (main): Ditto.
+
+	* main.c (main): Don't write a message if exec_command returns, because
+	it will never return.
+
+Fri Dec 22 16:19:58 1989  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)
+
+	* default.c (default_variables: "LINK.cc"): Use $(C++FLAGS) instead of
+	$(CFLAGS).
+
+Wed Dec 20 09:58:48 1989  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)
+
+	* job.c (new_job): If start_job set the child's `command_state' to
+	`cs_finished', call notice_finished_file.
+
+Sun Dec 17 19:45:41 1989  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)
+
+	* Version 3.57.3.
+
+Wed Dec 13 17:57:12 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* rule.c (convert_to_pattern): Accept files with dependencies as
+	suffix rules.
+
+Thu Nov 30 15:47:13 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* Version 3.57.2.
+
+	* function.c (expand_function: `shell'): Don't clobber BUFFER and then
+	try to free it.
+
+	* remake.c (update_file_1): Took code to force remake of nonexistent
+	deps out of #if 0, and changed the test to nonexistent non-intermediate
+	deps.  In version 4, I think removing this test completely will
+	implement the new feature that if a: b and b: c and c is newer than a,
+	b need not be remade.
+
+Sun Nov 26 16:12:41 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* compatMakefile (load.o, remote.o): Use $*.c instead of explicit file
+	names so that using VPATH works.
+
+Tue Nov 21 14:57:18 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.57.1.
+
+Fri Nov 10 03:28:40 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* remake.c (check_dep): Set *MUST_MAKE_PTR if FILE does not exist after
+	being updated.  (The exact opposite test was here before; why???)
+	(update_file_1): Set a dep's `changed' member after updating it if it
+	is phony and has commands (because they will then always be executed).
+
+Thu Nov  9 13:47:12 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* load.c [UMAX]: #ifdef UMAX_43 include different headers for the
+	`inq_stats' call.
+	* compatMakefile (LOAD_AVG): Document UMAX_43.
+
+	* Version 3.57.0.
+
+	* commands.c (chop_commands): New function to chop commands into lines.
+	* job.c (new_job): Break that code out, and call chop_commands.
+	* remake.c (remake_file): Call chop_commands before looking at
+	FILE->cmds->any_recurse.
+
+	* make.texinfo (Running: Goals): Don't say that the default target
+	won't be taken from an included makefile.
+
+	* remake.c (update_file_1): #if 0 out setting MUST_MAKE if a dep
+	doesn't exist.
+
+Fri Nov  3 15:53:03 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* Version 3.57.
+
+	* variable.c (try_variable_definition): Don't calculate useless value.
+
+	* main.c (define_makeflags): Fixed -j propagation.
+
+	* commands.c (execute_file_commands): Removed unused variable.
+
+Sun Oct 29 11:11:15 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* commands.c (execute_file_commands): If the commands are empty, call
+	notice_finished_file before returning.
+
+Sat Oct 28 23:06:32 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* remake.c (update_file_1): Don't always update a target that has no
+	deps.  Only do this for double-colon targets.
+
+Wed Oct 25 16:36:16 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* main.c (main) [hpux]: hpux == HPUX.
+	* compatMakefile (defines): Document that HPUX should be defined.
+
+Tue Oct 24 19:19:48 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.56.8.
+
+	* job.c (exec_command): Fixed what mode bits are checked.
+
+	* remake.c (update_file_1): "No cmds and no deps actually changed"
+	loses if ! FILE->is_target.
+
+	* make.texinfo (Variables: Setting): Don't say that spaces after a
+	variable definition are ignored (since they aren't).
+
+Mon Oct 23 14:34:23 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.56.7.
+
+	* remake.c (update_file_1): If, after being updated, any dependency
+	does not exist, remake the target.
+
+	* remake.c (update_file_1): Always update if FILE has commands but no
+	deps.
+
+	* commands.c (execute_file_commands): If we return early because there
+	are no commands, set FILE->updated.
+
+Thu Oct 19 18:47:37 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* arscan.c (ar_scan) [M_XENIX]: Don't run atoi or atol on the
+	`struct ar_hdr' members that are int or long int on Xenix.
+
+Sat Oct 14 10:43:03 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* arscan.c (ar_scan): Cosmetic clean ups.
+	(ar_name_equal): New function to compare names, handling truncated
+	member names and special `.o' truncation.
+	(ar_member_pos): Use ar_name_equal.
+	* ar.c (ar_member_date_1): Use ar_name_equal.
+
+	* Version 3.56.6.
+
+	* file.h (struct file): Made `update_status' a `short int', and moved
+	it before `command_state' so the bitfields can be packed better.
+
+	* remake.c (files_remade): Made global.
+	(notice_finished_file): Don't increment files_remade.
+	* job.c (new_job): Do.
+
+	* job.c (start_job): Don't return a value.  Always set
+	CHILD->file->command_state to either cs_running or cs_finished.
+	(new_job, child_handler): Don't expect start_job to return a value.
+	Instead, look at the file's command_state.
+
+	* commands.c (chop_commands): Merged into job.c (new_job).
+	* commands.h: Don't declare chop_commands.
+
+	* job.c (start_job): Made static.
+	(new_job): New function to create a `struct child' and call start_job.
+	(free_child): New function to free a `struct child'.
+	(child_handler, new_job): Call it.
+	* job.h: Don't declare start_job.  Do declare new_job.
+	* commands.c (execute_file_commands): Call new_job.
+
+	* commands.c (execute_file_commands): Don't set FILE->update_status if
+	start_job fails.
+
+	* function.c (expand_function): Don't use `reading_filename' and
+	`reading_lineno_ptr' if they're nil.
+
+Fri Oct 13 18:16:00 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* read.c (find_semicolon): New function to look for an unquoted ; not
+	preceded by an unquoted # in a string.
+	(read_makefile): Call it before expanding the line.  If it finds a ;,
+	cut the line short there before expanding it.  If not, call it again
+	after expanding.
+
+	* commands.c (execute_file_commands): Don't check FILE->command_state.
+	We won't get called unless it's cs_not_started.
+
+	* read.c (read_makefile): Call collapse_line on the variable-expanded
+	rule line after checking for ; and #.
+
+	* job.c (start_job): When there are no more commands, always return 0.
+	* commands.c (execute_file_commands): Don't put the new child in the
+	`children' chain unless FILE->command_state is cs_running.
+
+	* read.c (read_makefile): Rewrote ;-handling to only do it once (why
+	did I do it twice??) and to check for a # before the ;.
+
+	* job.c (start_job): Set CHILD->file->update_status to 0 when we run
+	out of commands.  Set it to 1 before returning failure.
+	(child_handler): Don't set C->file->update_status to 0 when start_job
+	returns success and commands are not running.
+
+	* read.c (read_makefile): If there is a # before the ; for commands,
+	forget the ; and commands.
+
+Thu Oct 12 15:48:16 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* job.c (child_execute_job): Pass -c to the shell.
+
+Wed Oct 11 18:41:10 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.56.5.
+
+	* main.c (define_makeflags): Cleaned up to keep better track of dashes
+	written, etc.
+
+	* function.c (expand_function: `shell'): When converting newlines to
+	spaces in output, search with `index' calls rather than a simple loop.
+
+	* main.c (main): Make sure stdout is line-buffered.
+
+	* main.c (decode_switches): Always check for missing switch arg.
+
+Mon Oct  9 17:17:23 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.56.4.
+
+Sat Oct  7 00:32:25 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* commands.c (set_file_variables): #ifdef NO_ARCHIVES, still set $@ and
+	$%.
+
+	* commands.c (set_file_variables): Include a trailing slash in the
+	directory variables (@D, etc.).
+
+	* job.c (child_handler): Call notice_finished_file after changing a
+	child's state to `cs_finished'.
+	* remake.c (update_file_1): Don't call notice_finished_file if
+	FILE->command_state == cs_finished.
+
+Wed Oct  4 16:09:33 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.56.3.
+
+Tue Oct  3 21:09:51 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* read.c (read_all_makefiles): When setting elements of MAKEFILES from
+	the contents of read_makefiles, make sure we're using the right
+	element.
+
+	* dir.c, glob.c [USGr3 || DIRENT]: Don't define d_ino as d_fileno.
+
+	* Version 3.56.2.
+
+	* remake.c (update_file_1): Return zero after calling remake_file if
+	FILE->command_state != cs_finished.  Test update_status thoroughly.
+
+	* commands.c (execute_file_commands): Don't call notice_finished_file.
+
+	* remake.c (remake_file): Return immediately after calling
+	execute_file_commands.
+
+Sat Sep 30 14:57:05 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.56.1 (alpha).
+
+	* file.h (struct file): Made `update_status' not be a bitfield, since
+	some broken compilers don't handle it right.
+
+	* function.c (expand_function: `join'): Don't clobber the pointers and
+	then try to free them.
+
+	* job.c (exec_command): Fixed & vs = precedence problem.
+
+Thu Sep 28 17:29:56 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* remake.c (update_file_1): Fixed typo in debugging output.
+
+	* remake.c (library_file_mtime): Search for /usr/local/lib/libLIB.a
+	after /usr/lib/libLIB.a.
+
+Tue Sep 26 16:07:58 1989  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* read.c (conditional_line): For `ifeq (a, b)', swallow space after the
+	comma.
+
+Sun Sep 24 13:25:32 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* function.c (patsubst_function): If BY_WORD and the match is not a
+	full word, update the text pointer correctly.
+
+	* function.c (expand_function: `word'): Don't lose track of the second
+	arg's expansion and free something else instead.
+
+Fri Sep 22 16:15:29 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.56.
+
+Thu Sep 21 14:28:42 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* main.c (main): Make an array of the mtimes of the makefiles before
+	updating them, and compare their file_mtimes against this later.  Don't
+	re-exec if a makefile was successfully updated but didn't change.  If a
+	makefile failed to be remade and no longer exists, die.  If a makefile
+	failed to be remade, but changed anyway, re-exec.  If a makefile failed
+	to be remade, but is unchanged, continue on.
+
+Wed Sep 20 18:02:07 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.55.6.
+
+	* implicit.c (pattern_search): Maintain an array CHECK_LASTSLASH of the
+	CHECK_LASTSLASH flag values used to match each member of TRYRULES.
+	When making FILE->stem, if CHECKED_LASTSLASH[FOUNDRULE], prepend the
+	part of FILENAME before LASTSLASH.
+
+Tue Sep 19 17:44:08 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* dir.c (dir_file_exists_p): Check for FILENAME being nil before
+	checking for it being "".
+
+	* main.c (define_makeflags): Fixed test for whether a flag/flag_off
+	option was non-default.  Also changed to generate a string that Unix
+	Make will grok (except for FP/int values and new flags).
+
+	* job.c (child_execute_job): Don't use the shell's -c option.
+	Also fixed an off-by-one bug in the ARGV -> shell arg list copying.
+
+Mon Sep 18 15:17:31 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.55.5.
+
+	* read.c (parse_file_seq): Check the beginning of the file name for a
+	`./', not the two chars after the end of the name (Q rather than P).
+
+	* job.c (child_execute_job): Include all of ARGV in the arg list for
+	the shell.
+
+	* main.c (define_makeflags): Don't include floating and positive_int
+	options in !PF.
+
+	* job.c (exec_command): Set the effective gid to the real gid before
+	execing.
+
+	* job.c (child_execute_job): Don't clobber the arg list when execing
+	the shell.
+
+Sun Sep 17 15:27:19 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* main.c (define_makeflags): Moved all the checking inside the switch.
+
+	* load.c [LDAV_BASED] (load_average): When we can't get the load
+	average, return zero instead of running off the end.
+
+	* file.c: Include variables.h.
+	* job.c: Declare dup2 and {block,unblock}_remote_children.
+	* file.h: Declare f_mtime.
+	* job.c: Don't declare construct_command_argv, since job.h does.
+	* function.c, main.c, load.c, remake.c: Include job.h.
+	* load.c [LDAV_BASED] (load_average): Declare nlist.
+	* variable.h: Declare print_file_variables.
+	* job.c [!USG]: Don't declare sigsetmask.
+	[!USG]: Declare getdtablesize.
+	Don't declare load_average.  Do declare wait_to_start_job.
+	Declare vfork, gete[gu]id, execve.
+	* commands.c: Declare remote_kill, getpid.
+	* make.h: Declare kill, exit, sigblock, pipe, close, ctime, open,
+	lseek, read.
+	* make.h [not USG]: Declare sigsetmask.
+	* job.h: Declare wait_for_children and {block,unblock}_children.
+
+	* dir.c (dir_file_exists_p): If FILENAME is nil, read in the whole
+	directory.
+	(find_directory): When we want to read in the whole directory, call
+	dir_file_exists_p with nil instead of "".
+
+	* file.h (struct file), job.h (struct child),
+	  variable.h (struct variable): Use bitfields for flags.
+	* make.h (ENUM_BITFIELD): If GCC or #ifdef ENUM_BITFIELDS, define as
+	:BITS, else empty.
+	* compatMakefile (defines): Document ENUM_BITFIELDS.
+
+Sat Sep 16 12:38:58 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.55.4 (alpha).
+
+	* GNUmakefile (dist): Depend on default and doc.
+
+	* load.c [LDAV_BASED]: Include <nlist.h> rather than <a.out.h>; #ifdef
+	NLIST_NAME_UNION, use n_un.n_name instead of n_name.
+	* compatMakefile (LOAD_AVG): Document NLIST_NAME_UNION.
+
+	* job.c [USG-ish]: Don't redefine WIF{SIGNALED,EXITED} if they're
+	already defined.
+
+Fri Sep 15 13:59:42 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* glob.c, dir.c [USGr3 or DIRENT]: If neither d_ino, nor d_fileno is
+	defined, define d_ino as d_fileno.
+
+Thu Sep 14 18:29:38 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* job.c: Don't declare exec_command static.
+
+	* make.texinfo (Name Index): Changed title to include directives.
+
+	* Version 3.55.3 (alpha).
+
+	* make.texinfo (Running: Options): Document -e.
+
+	* main.c (main): Always give imported environment variables origin
+	`o_env'.
+	* variable.c (define_variable_in_set): Under -e, if ORIGIN, or an
+	existing variable's origin, is `o_env', make it `o_env_override'.
+
+	* load.c: Use the symbol KERNEL_FILE_NAME instead of KERNEL_FILE.
+	* compatMakefile: Changed the comment for `LOAD_AVG' accordingly.
+
+Thu Sep  7 16:46:26 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.55.2 (alpha).
+
+	* variable.c (print_variable_set), rule.c (print_rule_data_base),
+	file.c (print_file_data_base): If NO_FLOAT is defined, don't use
+	floating-point for printing statistics.
+	* compatMakefile (defines): Document NO_FLOAT.
+
+	* make.h (HASH): New macro to add the hashing value of one char to a
+	variable.c.
+	* file.c (lookup_file, enter_file, rename_file): Use it.
+	* dir.c (find_directory, dir_file_exists_p, file_impossible_p): Ditto.
+	* variable.c (define_variable_in_set, lookup_variable): Same here.
+
+	* variable.c, file.c, dir.c: Don't define *_BUCKETS if they are already
+	defined.
+
+	* compatMakefile (defines): Added comment about defining NO_ARCHIVES.
+	(ARCHIVES, ARCHIVES_SRC): New variables for {ar,arscan}.[oc].
+	(objs, srcs): Use $(ARCHIVES) and $(ARCHIVES_SRC).
+	* commands.c (set_file_variables), dir.c (file_exists_p),
+	remake.c (touch_file, name_mtime), implicit.c (try_implicit_rule,
+	pattern_search), make.h: If NO_ARCHIVES is #defined, don't do any
+	archive stuff.
+
+	* commands.c (set_file_variables): Don't kill the last char of
+	directory names in $([@*<%?^]D).
+
+Wed Sep  6 15:23:11 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* default.c (default_terminal_rules {%:: %,v}, {%:: RCS/%,v}): Don't
+	run co if the target exists.
+
+	* glob.c (glob_match): [!xyz], rather than [^xyz], means none of [xyz].
+
+	* glob.c: Misc minor cosmetic changes.
+
+Tue Sep  5 14:49:56 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)
+
+	* load.c [LDAV_BASED] (load_average): Check for == -1, rather than < 0
+	to see if lseek fails.  On some systems, `avenrun' is at an offset >
+	(2**31)-1, and lseek succeeds, returning a negative value.
+
+Mon Sep  4 11:07:58 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)
+
+	* rule.c (new_pattern_rule): Return `int' instead of `void': nonzero if
+	the passed rule was used, zero if not.
+	(install_pattern_rule): Pay attention to the return from
+	new_pattern_rule, and don't set the rule's `terminal' flag or give it
+	commands unless it's used.
+	(create_pattern_rule): Same idea.
+
+	* dir.c (find_directory): Removed unused variable.
+
+	* commands.c (execute_file_commands): Removed unused variable.
+
+	* read.c (record_files): Don't use NAME after freeing it.
+
+Sat Sep  2 00:33:19 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)
+
+	* Version 3.55.1 (alpha).
+
+	* function.c (string_glob): Don't add spaces after file names that
+	aren't added.  (Also means don't add spaces without checking the size
+	of the buffer.)
+
+	* remake.c (update_goal_chain): Don't remove makefiles with cmds and no
+	deps from the chain.
+	* main.c (main): Do it here, before calling update_goal_chain.
+
+	* remake.c (update_goal_chain): When updating fails, change STATUS even
+	if MAKEFILES is set.  Also stop remaking when updating fails if not
+	under -k and MAKEFILES is not set.
+
+	* remake.c (remake_file, update_file_1, notice_finished_file),
+	commands.c (execute_file_commands), make.h, commands.h: The functions
+	remake_file, notice_finished_file, and execute_file_commands no longer
+	return values, and their callers no longer expect values returned.
+
+	* remake.c (notice_finished_file): Don't set FILE's modtime to now if
+	it is a non-target with no commands.
+
+Fri Sep  1 00:04:39 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)
+
+	* read.c (read_all_makefiles): After freeing each element on MAKEFILES,
+	replace it with the name stored in read_makefiles by read_makefile.
+
+	* remake.c (update_file_1): Don't decide not to remake if FILE has no
+	cmds and no deps actually changed if FILE doesn't have any deps.
+
+	* file.c (remove_intermediate): Remove precious files that also have
+	the `dontcare' flag set.
+
+	* remake.c (update_file_1): Don't always remake if FILE has cmds but no
+	deps; only if FILE is double-colon.  (I don't know why this should be
+	done for double-colon targets, but that's what Unix make does.)
+
+	* load.c [LDAV_BASED] (load_average): Write error messages if the
+	various system calls fail.  Keep track of if we've failed before.
+	The first time we fail, write a message saying -l won't be enforced.
+	The first time we succeed after having failed, write a message saying
+	-l will be enforced again.
+
+	* remake.c [USG]: Don't #include <sys/file.h>
+
+	* load.c [generic Unix LDAV_BASED]: #include <fcntl.h> #ifdef USG,
+	else <sys/file.h> instead.
+
+	* job.c [USG && !USGr3 && !HAVE_DUP2]: Remove redundant
+	#include <errno.h> and declaration of `errno'.
+	[...] (dup2): Fixed so it won't always lose.
+
+	* default.c (default_suffix_rules: .texinfo.dvi): Copy, rather than
+	move, the aux and index files, so the TeX run can use them.
+
+	* compatMakefile: Remove redundant comment.
+
+	* load.c [generic Unix LDAV_BASED]: Include <a.out.h> instead of
+	<nlist.h>, since the `struct nlist' declaration in <nlist.h> varies
+	more than the one in <a.out.h>.
+	(load_average): Use the `n_un.n_name' field of the `struct nlist',
+	since the <a.out.h> declaration uses the union.
+
+	* main.c (main): For the temporary files made for stdin makefiles, set
+	the `intermediate' and `dontcare' flags.
+	* file.c (remove_intermediates): Don't print any messages for files
+	whose `dontcare' flag is set.  (The only files that will be
+	intermediate and `dontcare' will be the temporary files made for stdin
+	makefiles.)
+
+	* job.c (exec_command): Made global.
+	* job.h: Declare it.
+	* main.c (main): Use exec_command when re-execing.
+
+	* make.h: Declare environ.
+	* make.c: Don't.
+
+	* job.c (child_execute_job): New function to perform everything done in
+	the child side of a fork (for a job or `shell' function).
+	(start_job): Call it.
+	* job.h: Declare construct_command_argv and child_execute_job.
+	* function.c (expand_function: `shell'): Use child_execute_job.
+
+Thu Aug 31 18:42:51 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)
+
+	* function.c (expand_function: `shell'): Remove a trailing newline
+	instead of turning it into a space.
+
+	* main.c (main): Do init_siglist #ifdef HAVE_SIGLIST.
+
+	* job.c [WTERMSIG || (USG && !HAVE_SYS_WAIT)]: Test each W* macro
+	separately and define all those that aren't defined.
+
+Sat Aug 26 15:13:21 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* ar.c (ar_name): Return zero for `(foo)'.
+
+	* Version 3.55.
+
+	* make.texinfo (Rules: Multiple Targets): Make this node's `next'
+	pointer point to `Static Pattern'.
+	* make.texinfo (Makefiles: MAKEFILES Variable): Make this node's `prev'
+	pointer point to `Makefile Names'.
+
+	* make.1: Renamed to make.man.
+	* compatMakefile: Define `mandir' and `manext'.
+	(install): Depend on $(mandir)/make.$(manext).
+	($(mandir)/make.$(manext)): Depend on make.man and copy it to $@.
+	($(bindir)/make): Use `make' rather than $<; so Unix make can grok it.
+
+Thu Aug 24 03:35:48 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* variable.c (target_environment): Allow variables that start with
+	underscores.
+
+Wed Aug 23 22:50:32 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* variable.c (target_environment): Reject variables that don't start
+	with letters.
+
+Tue Aug 22 04:14:29 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* GNUmakefile (make-$(version).tar.Z): Put make.1 (the Unix manual
+	page) in the tar file.
+
+	* variable.c (target_environment): Don't write variables with origin
+	o_default (i.e., ones from default.c).
+	* make.texinfo (Commands: Recursion: Variables/Recursion): Document
+	that default variables are not put in the environment.
+
+	* remake.c (update_file_1): Remake all targets with commands but no
+	deps.
+
+Sat Aug 19 06:03:16 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* remake.c (update_file_1): In the final loop, set the deps'
+	`changed' members if they are newer than FILE.
+
+	* remake.c (update_goal_chain): Under -d, print a message if we decide
+	not to remake a makefile so as to avoid a possible infinite loop.
+
+Fri Aug 18 20:30:14 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* remake.c (remake_file): Cleaned up.
+
+	* commands.c (execute_file_commands): If the commands are empty, set
+	FILE->update_status to zero before returning.
+
+	* remake.c (notice_finished_file): Set `last_mtime' fields to zero
+	instead of calling name_mtime; file_mtime will do that later if anybody
+	cares.
+
+Thu Aug 17 10:01:11 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* make.texinfo (Rules: Wildcards: Wildcard Examples): Give this node a
+	`prev' pointer.
+
+	* Version 3.54.9 (alpha).
+
+	* make.texinfo: Fixed some @nodes.
+
+	* remake.c (check_dep): Don't set *MUST_MAKE_PTR if FILE doesn't exist
+	after running update_file.
+
+	* remake.c (notice_finished_file): If FILE has no commands, pretend its
+	modtime is now.
+
+	* remake.c (update_file_1): In the loops that call update_file on the
+	deps, compare modtimes before and after (unless deps are still being
+	made) and set the deps' `changed' members.  Do not set the `changed'
+	members in the loop that prints the newer/older debugging messages.
+	* remake.c (update_file_1): If no deps changed and FILE has no
+	commands, decide it doesn't need remaking.
+
+	* remake.c (update_file_1): Print a debugging message if we take
+	commands from default_file.
+
+	* make.texinfo (Rules: Directory Search: Selective Search): Removed
+	note about warning for `vpath' with a constant pathname, since it isn't
+	warned about anymore.
+
+	* remake.c (update_goal_chain): If MAKEFILES, remove makefiles which
+	are targets and have no deps.
+	* make.texinfo (Makefiles: Remaking Makefiles): Document that makefiles
+	will not be remade if they are targets but have no dependencies.
+
+Tue Aug 15 00:00:08 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)
+
+	* remake.c (notice_finished_file): Increment files_remade for non-phony
+	files if they didn't exist before (even if they still don't).
+
+	* job.c: Include <errno.h> and declare errno.
+
+	* job.c (exec_command): If the execve fails with ENOEXEC (Exec format
+	error), return instead of exiting the child process.
+
+	* job.c (start_job): In the child side, if exec_command fails, try
+	using the shell.
+
+	* job.c (start_job): In the child side, call unblock_children instead
+	of sigsetmask.
+
+	* remake.c (notice_finished_file): Under -n or -q, always increment
+	files_remade for non-phony files.
+
+	* rule.c (intall_pattern_rule): Use find_percent.
+
+	* vpath.c (vpath_search): Pass the `percent' members to
+	pattern_matches.
+
+Mon Aug 14 23:30:24 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)
+
+	* vpath.c (struct vpath): New member `percent', to hold a pointer into
+	the pattern where the % is.
+	(construct_vpath_list): Call find_percent on the pattern and set the
+	new `percent' member.
+	* read.c (read_makefile): Don't run find_percent on `vpath' directive
+	patterns.
+
+	* function.c (pattern_matches): Take new arg PERCENT, a pointer into
+	PATTERN where the % is.  If PERCENT is nil, copy PATTERN into local
+	space and run find_percent on it.
+	(expand_function: `filter', `filter-out'): Pass new arg to
+	pattern_matches.
+	* read.c (record_files): Pass PATTERN_PERCENT to pattern_matches for
+	static pattern rules.  Save the percent pointer into implicit rule
+	targets, and pass them to create_pattern_rule.
+	* rule.c (convert_to_pattern): Pass new arg to create_pattern_rule.
+	(create_pattern_rule): Take new arg TARGET_PERCENTS, nil or an array of
+	pointers into the corresponding elements of TARGETS, where the %s are.
+
+Sun Aug 13 00:29:19 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* Version 3.54.8.
+
+	* README.templatate, README-doc.template: New files, turned into README
+	and README-doc to go into the two distribution tar files.
+	* GNUmakefile: Added a rule to edit the version number in
+	README.template and README-doc.template, producing README and
+	README-doc.
+
+	* remake.c (update_goal_chain): If -n or -q is in effect for a
+	makefile, and it got updated, don't change STATUS, so we can still
+	return -1 (meaning nothing was done).  This avoids an infinite loop on
+	"make -n Makefile".
+
+Sat Aug 12 23:14:24 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* remake.c (notice_finished_file): Treat -q the same as -n.
+
+	* remake.c (update_goal_chain): Fixed handling of return from
+	update_file.  If -n or -q is in effect, ignore it.
+
+	* job.c (start_job): Don't test for -t.  We should never get called in
+	that case.
+
+Fri Aug 11 04:09:14 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* function.c (expand_function): Removed unused variables.
+	(handle_function): Removed unused variable.
+
+	* main.c (main): Removed unused variable.
+
+Wed Aug  9 09:37:10 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* Version 3.54.7.
+
+	* remake.c (notice_finished_file): If FILE's modtime actually changed,
+	increment files_remade.
+	(remake_file): Don't increment files_remade.
+
+	* remake.c (update_file): Don't print "up to date" messages for
+	phony files.
+
+	* job.c (child_handler): Don't set C->file->update_status to 1 if
+	start_job returns nonzero under -n or -t.
+
+	* expand.c (variable_expand): Count parens in $(foo:a=b) refs.
+
+	* main.c: Removed old declaration of `glob_tilde' (which hasn't existed
+	for a few months).
+
+Tue Aug  8 23:53:43 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* job.c (exec_command): Fixed to not ignore the last path component and
+	to do the right thing with an empty path.
+
+Fri Aug  4 15:58:19 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* remake.c (library_file_mtime): Look for libLIB.a, not /libLIB.a.
+	Do VPATH search on libLIB.a, not /usr/lib/libLIB.a
+
+Thu Aug  3 20:42:00 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* job.c [HAVE_SYS_WAIT or not USG]: If WIFSIGNALED is not defined by
+	<sys/wait.h>, define it as (WTERMSIG != 0).
+
+Tue Aug  1 19:25:34 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* remake.c (remake_file): If FILE has no commands and is a target,
+	don't set its time to now.  The time gets reset by notice_finished_file
+	anyway, and it isn't needed since check_dep checks for nonexistence.
+
+	* Version 3.54.6.
+
+	* read.c (read_makefile): Don't read off the end of the string after an
+	`include'.
+
+	* job.c (exec_command): New function to search the path for a file and
+	execute it.
+	(start_job): Use exec_command rather than execvp.
+
+	* read.c (read_makefile): Expand `include' directive args before
+	parsing them.  Allow trailing whitespace after filename.
+
+	* variable.c (target_environment): Put makelevel + 1, rather than
+	makelevel, in the `MAKELEVEL' envariable.
+
+Sat Jul 29 10:27:04 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* remake.c (notice_finished_file): Don't get the new modtime of phony
+	files.
+
+	* remake.c (remake_file): Run commands instead of touching under -t if
+	FILE->cmds->any_recurse is set.
+
+	* commands.h (struct commands): Add new member `any_recurse', to be set
+	nonzero if any `lines_recurse' element is nonzero.
+	* commands.c (chop_commands): Set the `any_recurse' member.
+
+	* commands.c (execute_file_commands): Split chopping of commands into
+	lines into new function chop_commands.
+	* commands.h: Declare chop_commands.
+
+	* read.c (read_makefile): Test for a line beginning with a tab after
+	checking for conditional lines, but before all other checks.
+
+Fri Jul 28 18:10:29 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* read.c (read_makefile): Match directives against collapsed line
+	and use that for their args.
+
+	* read.c (read_makefile): Warn about extra text after `include'.
+
+Tue Jul 25 14:34:25 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* make.texinfo (Rules: Directory Search: Selective Search): Fixed
+	example to use correct `vpath' syntax.
+
+Mon Jul 24 12:10:58 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* Version 3.54.5.
+
+	* job.c (start_job): In the child side, unblock SIGCHLD.
+
+Fri Jul 21 18:25:59 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* make.h: Don't include <sys/types.h> #ifdef sun.
+
+Mon Jul 17 14:29:10 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* implicit.c (pattern_search): If ar_name (FILENAME), don't check for
+	directory names.
+
+	* job.c (wait_for_children): Changed "waiting for children" message to
+	"waiting for unfinished jobs".
+
+Fri Jul 14 13:17:13 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* load.c (load_average): Use an unsigned offset into kmem.
+
+Thu Jul 13 18:44:49 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* variable.c (pop_variable_scope): Don't free the head of the chain of
+	variables in each bucket twice.
+
+Tue Jul 11 06:45:24 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* GNUmakefile: Include COPYING in the doc tar file.
+
+	* variable.c, read.c, misc.c, job.c, function.c: Replace some identical
+	"for" loops with next_token or end_of_token calls.
+
+Mon Jul 10 16:55:08 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* Version 3.54.4.
+
+	* compatMakefile: Documented new conditionals.
+
+	* job.c: Don't define sys_siglist if HAVE_SIGLIST is defined.
+	Don't define dup2 if HAVE_DUP2 is defined.
+
+	* job.c (child_handler): Interpret the return from start_job correctly.
+
+	* remake.c (update_file_1): Don't write "target not remade because of
+	errors" message under -n or -q.
+
+	* read.c: Declare getpwnam.
+
+	* glob.c: Use <dirent.h> if DIRENT is defined.
+	[USG]: Don't declare memcpy, since <memory.h> does.
+
+Fri Jul  7 20:53:13 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* misc.c (collapse_line): Copy the line over in the right place.
+
+Fri Jul  7 18:33:24 1989  Roland McGrath    (fsf at void.ai.mit.edu)
+
+	* remake.c: Conditionalize inclusion of <sys/file.h> on not
+	USG, since HP-UX defines a `struct file' there.
+
+Fri Jul  7 12:11:30 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* job.c: If WTERMSIG is defined by <sys/wait.h>, define WAIT_T as int,
+	and don't define other macros; this covers HP-UX.
+	If WTERMSIG is not defined, use int or union wait based on USG and
+	HAVE_SYS_WAIT; this covers BSD and SysV.
+
+	* Version 3.54.3 (alpha).
+
+	* job.c [USG and not USGr3]: Include <errno.h> and declare errno.
+
+	* job.c (unblock_children [USG]): Declare child_handler.
+
+	* job.c: Renamed WRETCODE to WEXITSTATUS.
+	[HAVE_SYS_WAIT or not USG]: Undefine WTERMSIG, WCOREDUMP, and
+	WEXITSTATUS before defining them.  The HP-UX <sys/wait.h> defines them.
+
+	* main.c (main): If there are no goals, fatal AFTER printing the data
+	base under -p.
+
+Thu Jul  6 22:43:33 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)
+
+	* glob.c [USG]: #define rindex as strrchr.
+
+	* job.c [USG]: Include <sys/param.h> and #define getdtablesize() as
+	NOFILE.
+
+Wed Jul  5 09:36:00 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* Version 3.54.2 (alpha).
+
+	* expand.c (variable_expand): When expanding recursive variable
+	references (${${a}}), use the correct delimiters in the constructed
+	variable reference.
+
+Mon Jul  3 18:29:26 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)
+
+	* compatMakefile: Clear out and redefine the .SUFFIXES list because
+	silly Sun 4 make defines .cps.h.
+
+	* compatMakefile: Fix comment about -DNO_MINUS_C_MINUS_O.
+
+	* remake.c: Include <sys/file.h> for O_* on 4.2.
+
+	* commands.c: Define sigmask if it's not defined.
+
+Fri Jun 30 07:33:08 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)
+
+	* remake.c (remake_file): Don't always increment files_remade.
+
+	* variable.c (push_new_variable_scope): Zero the new variable hash
+	table.
+
+Thu Jun 29 17:14:32 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* expand.c (variable_expand): When terminating the variable expansion
+	buffer, use variable_buffer_output instead of a simply zero store,
+	because the buffer may need to be enlarged.
+
+Wed Jun 28 16:53:47 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* Version 3.54.
+
+	* default.c (default_suffixes): Added `.ln'.
+	(default_suffix_rules): Changed lint rules to use -C.
+
+Thu Jun 22 20:49:35 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* job.c (start_job): Set `environ' to CHILD->environment before execing
+	in the child process!
+
+Tue Jun 20 17:23:13 1989  Roland McGrath  (roland at spiff.ai.mit.edu)
+
+	* compatMakefile: Put job.h and rule.h in `srcs'.
+
+	* Version 3.53.
+
+Mon Jun 19 16:25:18 1989  Roland McGrath  (roland at spiff.ai.mit.edu)
+
+	* job.c (start_job): If there are no more commands, return nonzero
+	under -n or -t.
+
+	* compatMakefile (make): Pass `-f' to mv.
+
+	* GNUmakefile: If `ARCH' or `machine' is defined, make $(ARCH)/*.o and
+	$(ARCH)/make instead of *.o and make.
+
+	* function.c (string_glob): Don't try to use freed storage!
+
+	* read.c (readline): If there is only one byte of space in the buffer,
+	enlarge the buffer before reading more.
+
+	* arscan.c [M_XENIX]: Miscellaneous minor changes for Xenix.
+
+Sun Jun 18 13:07:45 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* GNUmakefile (depend): Split commands into two lines so they won't be
+	so long when variable-expanded.
+
+	* compatMakefile: Documented MINUS_C_MINUS_O meaning.  The line
+	describing it got removed when the USG/wait stuff was documented.
+
+Sat Jun 17 22:56:54 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)
+
+	* Version 3.52.
+
+Mon Jun 12 17:45:11 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* remake.c (check_dep): Drop circular dependencies instead of fataling.
+	(update_file_1 already does this.)
+
+	* default.c (default_suffix_rules): For .s -> .o, put the -o flag to
+	the assembler before the source file name.
+
+Sun Jun 11 12:00:52 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* Version 3.51.
+
+	* make.texinfo (Features): Noted 1003.2 requirement of `+' meaning.
+
+	* file.c (remove_intermediates): If !SIG, write a single "rm" command
+	line, listing all files.
+
+	* read.c (read_makefile): Don't free the storage for the passed
+	filename, since it might not be malloc'd.  When doing an included
+	makefile, free the name's storage.
+	(read_all_makefiles): Use variable_expand to find the value of
+	`MAKEFILES'.  Free the storage for the names of -f makefiles.
+	(read_makefile): Allocate storage for the makefile name in the
+	`struct file' in read_makefiles.
+
+	* make.texinfo (Running: Instead of Execution): Document the effect of
+	+ and $(MAKE)/${MAKE}.
+
+	* make.texinfo (Functions: Foreach Function): Document that if the
+	iteration variable was undefined before the `foreach' call, it will be
+	undefined after the call.
+
+	* commands.c: Split into commands.c, job.h, and job.c.
+
+	* rule.c (try_implicit_rule, pattern_search): Moved to new file
+	implicit.c.
+
+	* rule.c: Split into rule.h, rule.c, and default.c.
+	* default.c (install_default_pattern_rules): Renamed to
+	install_default_implicit_rules.
+	* make.h, main.c (main): Renamed uses.
+
+	* make.c: Renamed to misc.c.
+
+	* make.c (main, log_working_directory, decode_switches,
+	decode_env_switches, define_makeflags, die, print_version,
+	print_data_base): Moved to new file main.c.
+
+	* commands.c (execute_file_commands): Don't collapse backslash-newlines
+	here.  When chopping the commands up into lines, don't chop at
+	backslash-newlines.
+	(start_job): Collapse backslash-newlines after printing the line.
+
+	* commands.c (start_job): Don't collapse backslash-newlines here.
+	(execute_file_commands): Collapse backslash-newlines before chopping
+	the commands up into lines.
+
+	* commands.c (set_file_variables): Initialize the length counters for
+	$^ and $? to zero!
+
+	* commands.c (start_job): Use vfork instead of fork.  Someone else says
+	the child and parent DO have separate file descriptors.
+
+	* variable.c: Split internals into variable.c, function expansion into
+	function.c, and variable expansion into expand.c.
+	* function.c (handle_function): New function to check for a function
+	invocation and expand it.
+	* expand.c (variable_expand): Use handle_function.
+	* variable.c (push_new_variable_scope): New function to push a new
+	empty variable set onto the current setlist.
+	(pop_variable_scope): New function to pop the topmost set from the
+	current setlist and free its storage.
+	* function.c (expand_function: `foreach'): Push a new variable scope
+	for the iteration variable and pop the scope when finished.
+	* variable.h: Declare new functions.
+	* variable.c (initialize_variable_output): New function to return a
+	pointer to the beginning of the output buffer.
+	(save_variable_output): New function to save the variable output state.
+	(restore_variable_output): New function to restore it.
+	* expand.c (variable_expand): Use initialize_variable_output.
+	(allocated_variable_expand): Use {save,restore}_variable_output.
+	* variable.c (current_setlist): Renamed to current_variable_set_list
+	and made global.
+
+Sat Jun 10 00:11:25 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* remake.c (library_file_mtime): Check for libNAME.a in the current
+	directory before doing VPATH search.
+
+	* variable.c (print_variable_set): Don't write "# Variables", and write
+	fewer blank lines.
+	(print_variable_data_base): Precede the variables with "# Variables".
+
+	* make.c (main): Print the data base under -p after doing everything
+	else, just before exitting.  This way it gets info determined in
+	updating the goal targets.
+
+	* variable.c (print_variable_data_base): Split into print_variable,
+	which prints one variable, and print_variable_set, which prints a set.
+	Replaced with a call to print_variable_set for the global set.
+	(print_file_variables): New function to print a given file's local
+	variables.
+
+	* file.c (print_file_data_base): Call print_file_variables to print
+	each file's local variables.
+
+	* commands.c (set_file_variables): Actually define the values for
+	the $^ and $? variables!!!
+
+	* make.texinfo (Implicit: Pattern Rules: Automatic): Document new D and
+	F versions of $^ and $?.
+
+	* commands.c (start_job): In the child fork, use getdtablesize and a
+	loop to close all file descriptors other than 0, 1, and 2.  We need to
+	do this since not only the bad stdin pipe, but also some directories,
+	may be open.
+
+	* commands.c (start_job): Use fork instead of vfork, because a vfork
+	parent and child share file descriptors, and our child needs to diddle
+	with stdin.
+
+	* variable.c (initialize_file_variables): When created a new variable
+	set, zero out the hash table.
+
+	* variable.c (target_environment): Don't use variables whose names are
+	not made up of alphanumerics and underscores.
+
+	* remake.c (update_file_1): Set the `parent' member of each dependency
+	to FILE before updating it.
+
+	* file.h (struct file): Add `parent' member.
+
+	* variable.c (initialize_file_variables): Don't take second arg PARENT.
+	Use FILE->parent instead.  If FILE->parent->variables is nil, recurse
+	to initialize it.
+
+	* variable.h: Declare {allocated_}variable_expand_for_file.
+
+	* variable.c (allocated_variable_expand): Now
+	allocated_variable_expand_for_file, calling variable_expand_for_file,
+	and taking second arg FILE.
+	(allocated_variable_expand): New function, a wrapper around
+	allocated_variable_expand_for_file, passing a nil second arg.
+
+Fri Jun  9 12:11:45 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* commands.c (start_job): On the child side of the fork, always close
+	the bad stdin file descriptor.
+
+	* commands.c (struct child): New member `environment', to hold the
+	environment for the child.
+	(execute_file_commands): Set the new childs `environment' member to nil
+	before calling start_job.
+	(start_job): Set up CHILD->environment before running the commands if
+	it is nil.
+
+	* make.c (main): Don't call new_environ.  `shell' functions will now be
+	run with the environment make was called with.
+
+	* commands.c (child_handler): Don't check C->command_ptr before calling
+	start_job since we now have to check C->file->cmds->command_lines and
+	it's easier to let start_job handle all that.
+
+	* commands.c (struct child): New member `command_line', to hold an
+	index into file->cmds->command_lines.
+	(execute_file_commands): Set the new child's `command_line' to 0 and
+	its `commands' and `commands_ptr' to nil.
+	(start_job): When CHILD->command_ptr runs out, increment
+	CHILD->command_line and run the corresponding line from
+	CHILD->file->cmds->command_lines.  Run it even under -t, -q, or -n if
+	the CHILD->file->cmds->lines_recurse element for that line is set.
+
+	* commands.c (execute_file_commands): Chop CMDS up into lines, setting
+	its `command_lines' and `lines_recurse' members, if it wasn't already
+	chopped.
+
+	* commands.h (struct commands): New members `command_lines' and
+	`lines_recurse'.  The first is an array of chopped-up lines; the second
+	is an array of flags, each nonzero if the corresponding line is
+	recursive.
+
+	* variable.c (variable_expand_for_file): If FILE is nil, just do a
+	vanilla variable_expand.
+	(expand_function: `shell'): Pass second arg (as nil) to
+	construct_command_argv.
+
+	* commands.c (construct_command_argv): Use variable_expand_for_file on
+	`$(SHELL)' and `$(IFS)' instead of lookup_variable to check those
+	variables.  This handles file-local and recursive values correctly.
+	To support this, take an additional argument FILE.
+
+	* variable.c (initialize_file_variables): New function to initialize
+	FILE's variable set list from PARENT's setlist.  PARENT is the
+	immediate dependent that caused FILE to be remade, or nil if FILE is a
+	goal.  (When user-level per-file variables are implemented, PARENT
+	should be passed as nil when defining per-file variables.)
+
+	* variable.c (variable_expand_for_file): New function to expand a line
+	using the variable set of a given file, and reporting error messages
+	for the file and line number of that file's commands.
+
+	* variable.h: Don't declare lookup_variable_for_file.
+
+	* variable.c (lookup_variable_*): Turned back into lookup_variable.  It
+	now uses current_setlist.
+	(global_setlist): New static `struct variable_set_list', a setlist
+	containing global_variable_set.
+	(current_setlist): New static `struct variable_set_list *', a pointer
+	to the current variable set list.
+	(define_variable): Define in the current top-level set, not the global
+	set.
+
+	* commands.c (set_file_variables): New function to set up the automatic
+	variables for a file in its own variable set.
+	(execute_file_commands): Use set_file_variables.
+
+	* variable.c (new_environ): Replaced with target_environment, taking an
+	argument FILE, and returning an environment for FILE's commands.
+
+	* variable.c, variable.h: Remove all global special variable pointers.
+
+	* variable.c (define_variable_for_file): New function like
+	define_variable, but takes additional arg FILE, and defines the
+	variable in the variable set at the top of FILE's chain.
+	(lookup_variable_for_file): New function like lookup_variable, but
+	takes additional arg FILE, and looks the variable up in all of FILE's
+	variable sets.
+
+	* file.h (struct file): New member `variables', a `struct
+	variable_set_list' containing the list of variable sets used in the
+	expansion of the file's commands.
+
+	* variable.c (variables): Replaced with static `struct variable_set'
+	global_variable_set.
+	(define_variable): Now define_variable_in_set, taking additional
+	argument SET, the `struct variable_set' to define it in.
+	(define_variable): Use define_variable_in_set with global_variable_set.
+	(lookup_variable): Now lookup_variable_in_set, taking additional
+	argument SET, the `struct variable_set' to look it up in.
+	(lookup_variable): Use lookup_variable_in_set with global_variable_set.
+	(lookup_variable_in_setlist): New function to look up a variable in a
+	`struct variable_set_list' using lookup_variable_in_set.
+
+	* variable.h (struct variable_set): New structure, containing a hash
+	table and the number of hash buckets.
+	(struct variable_set_list): New structure, containing a link for a
+	linked-list, and a `struct variable_set'.
+
+	* commands.c (start_job): Under -n, return what the recursive start_job
+	call returns, since it might actually start a child.
+
+	* make.texinfo (Rules: Wildcards): Document ~ and ~USER expansion.
+
+	* commands.c (execute_file_commands): If start_job returns
+	failure, but -t is set, set FILE->update_status to success.
+	(start_job): If -t is set, and the commands are not recursive, return
+	failure (is is done for -q).
+
+	* remake.c (touch_file): New function to touch FILE.
+	(remake_file): Use touch_file.  When touching a file, still do
+	execute_file_commands.
+
+	* remake.c (remake_file): Don't check question_flag (-q), since we
+	can't know here if the commands are recursive.
+
+	* commands.c (start_job): Don't use the `recursive' member of
+	CHILD->file->cmds.  Instead, check for leading +s and $(MAKE) or
+	${MAKE} in the command line here.
+
+	* commands.h (struct commands): Remove `recursive' member.
+
+	* rule.c (install_default_pattern_rules): Remove use of `recursive'
+	member.
+
+	* read.c (record_files): Don't check commands from $(MAKE) and set
+	their `recursive' member.
+
+	* commands.c (fatal_error_signal): Treat SIGQUIT like SIGINT, SIGHUP,
+	and SIGTERM, but don't send it to ourselves because it will cause a
+	core dump.
+
+Thu Jun  8 20:30:04 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.50.
+
+	* variable.c (variable_expand): Use allocated_variable_expand instead
+	of expand_argument in a few places.
+
+	* variable.c (allocated_variable_expand): Do static variable shuffling
+	here instead of using expand_argument.
+	(expand_argument): Use allocated_variable_expand.
+
+	* variable.c (recursively_expand): New function to recursively expand
+	its argument (a `struct variable'), returning the malloc'd value.
+	(variable_expand): Use recursively_expand.
+
+Sun May 28 12:49:27 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* make.c (main): Fixed buggy fix in deciding to increase space for
+	command-line variable definitions.  (First it never did it, then it
+	always did it; now it does it when necessary.)
+
+Sat May 27 14:01:54 1989  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)
+
+	* make.c (main): Fixed bug in deciding to increase space for
+	command-line variable definitions.
+
+Fri May 26 15:48:01 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* read.c (multi_glob): Use allocated_expand_variable for checking
+	`HOME' variable for ~ expansion, since this may be called from inside a
+	`wildcard' function expansion.
+
+	* variable.h: Declare allocated_expand_variable.
+
+	* variable.c (allocated_expand_variable): New function to do variable
+	expansion in an allocated buffer, rather than the static one.
+
+	* make.c (main): Don't set glob_tilde (it no longer exists).
+
+	* variable.c (string_glob): Use multi_glob and parse_file_seq.
+
+	* read.c (multi_glob): Do ~ expansion here.
+
+	* glob.c (glob_tilde, glob_filename): Removed ~ expansion.
+
+	* variable.c (define_variable, lookup_variable): Use a smarter hashing
+	algorithm (the same one used for files and directories).
+	(VARIABLE_BUCKETS): Increased to 523.
+
+	* file.c (enter_file, lookup_file, rename_file): Use a smarter hashing
+	algorithm, spreading the bits about somewhat.
+
+	* make.c (log_working_directory): Under `-p', precede the directory
+	message with a `#'.
+
+	* make.c (print_version): Under `-p', precede each line with a `#'.
+	(print_data_base): Precede the header line with a `#' and include the
+	date and time on it.
+
+	* vpath.c (print_vpath_data_base): Precede non-directive
+	lines with `#'s.
+
+	* commands.c (print_commands): Precede the non-command line with a `#'.
+
+	* rule.c (print_rule_data_base), file.c (print_file_data_base): Precede
+	non-rule lines with `#'s.
+
+	* dir.c (print_dir_data_base): Precede all lines with `#'s.
+
+	* variable.c (print_variable_data_base): Changed format so that it can
+	be makefile input.  Lines that are not variable definitions are
+	preceded with `#'.  Nonrecursive variable definitions are made with all
+	dollar signs doubled to reproduce the initial value.  Recursive
+	variable definitions containing newlines are done with `define'
+	directives.  Nonrecursive variable definitions containing newlines, and
+	variable names containing :, =, or newlines, will come out garbled.
+
+Wed May 24 00:20:04 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.49.
+
+Tue May 23 19:18:00 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* variable.c (expand_function: `filter'/`filter-out'): Use
+	find_percent instead of pattern_p.
+
+	* variable.c (expand_function: `patsubst'): Pass new args (both nil)
+	to patsubst_expand.
+	(variable_expand): For $(var:pat%=rep%) references, pass new args to
+	patsubst_expand so as to avoid find_percent and thus disallow
+	quoting the %s.
+
+	* read.c (record_files): Pass new args to patsubst_expand.
+
+	* variable.c (patsubst_expand): Take two new args: PATTERN_PERCENT
+	and REPLACE_PERCENT.  Each of these, if non-nil, means that PATTERN
+	(or REPLACE) has already been run through find_percent, and
+	PATTERN_PERCENT (or REPLACE_PERCENT) is the result.
+
+	* make.h: Declare find_percent instead of pattern_p.
+
+	* read.c (pattern_p): Changed to find_percent, returning a pointer
+	to the %, or nil if there is none.
+	(record_files): Take another arg, PATTERN_PERCENT, a pointer to the
+	% in PATTERN.
+	(read_makefile): Pass PATTERN_PERCENT to record_files.
+
+	* make.texinfo (Rules: Static Pattern: Static Usage,
+	Rules: Directory Search: Selective Search,
+	Functions: Text Functions): Documented that `%' can be quoted.
+
+	* variable.c (expand_function: `filter'/`filter-out'): Use pattern_p
+	to allow quoted %s in patterns.
+
+	* variable.c (patsubst_expand): Use pattern_p on PATTERN and REPLACE
+	to allow quoted %s.  Quoting backslashes are removed from REPLACE
+	even if PATTERN contains no unquoted %.
+
+	* read.c (pattern_p): Made global.
+	* make.h: Declare pattern_p.
+
+	* read.c (pattern_p): New function to search for an unquoted % in a
+	string.  Backslashes quote %s and backslashes.  Quoting backslashes
+	are removed from the string by compacting it into itself.  Returns
+	nonzero if an unquoted % was found, zero if not.
+	(record_files): Use pattern_p to check for implicit rules.
+	(read_makefile): Use pattern_p to check for static pattern rules.
+	Also use it to allow quoted %s in `vpath' patterns; warn about
+	`vpath' patterns with no %s.
+
+Mon May 22 16:31:52 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* glob.c (glob_filename): Replace a `1' with the `l' that should
+	have been there.  This incidentally stops it from dumping core.
+
+	* glob.c (glob_filename): If the path is just a directory, with no
+	file name pattern, return the directory alone.
+
+	* glob.c (glob_tilde): New global variable (int), defaults to zero.
+	(glob_filename): If glob_tilde is nonzero, expand ~ or ~USER.
+
+	* variable.c (string_glob): Keep a static allocated buffer for file
+	names taken from the list, instead of allocating and freeing one
+	every time.
+
+Fri May 19 18:06:26 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* make.c (decode_switches): Get floating numbers from the right string.
+
+Sun May 14 13:48:04 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* commands.c (delete_child_targets): When deleting `also_make'
+	files, include the target's name in the message:
+		make: *** [foo] Deleting file `bar'
+
+Sat May 13 17:34:26 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* make.c (max_load_average, default_load_average): Default to -1.
+
+	* load.c (wait_to_start_job): Return if max_load_average is < 0.0,
+	not equal.
+
+Fri May 12 16:08:05 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* variable.c (variable_buffer_output): Don't try to do pointer
+	arithmetic between objects not in the same array.
+
+Wed May 10 15:55:29 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* rule.c [M_XENIX] (default_suffix_rules, default_variables): Minor
+	changes to allow for strange compiler syntax.
+
+	* rule.c (default_variables): Don't include "> $@" in
+	$(PREPROCESS.S), since it's already in the .S.s rule.
+
+	* file.c (enter_file): Make a new double-colon file the `prev'
+	member of the bottom `prev' file (the one whose `prev' is nil).
+
+	* read.c (do_define): Append newlines after copying the lines into
+	the value buffer, so we end up with a trailing newline.
+
+	* make.c (print_version): If the global variable
+	`remote_description' is not nil or "", append "-%s" (its value) to
+	the version number.
+	* remote-*.c: Define remote_description appropriately.
+
+Sun May  7 15:15:53 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* commands.c (error_status): Converted to new function child_error,
+	taking new arguments TARGET_NAME and IGNORED, and writing an error
+	message: "*** [target] Error 1" (or signal #, etc.), appending
+	" (ignored)" if IGNORED is nonzero.
+	(child_handler): Use child_error instead of error_status.
+
+	* compatMakefile (all): Don't depend on `doc'.
+
+	* compatMakefile (clean): Don't remove make-info*.
+	(realclean): New rule, depends on `clean', removes tags, TAGS,
+	and all Info and TeX files.
+
+Thu May  4 17:00:46 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* variable.c (print_variable_data_base), file.c
+	(print_file_data_base), rule.c (print_rule_data_base),
+	Use floating-point for averages and percentages.
+
+	* make.c (print_data_base): Print messages before and after the data
+	base information.
+
+	* commands.c (print_commands): Changed output format to separate
+	lines in commands and prefix them with tabs.
+
+	* dir.c (print_dir_data_base): Changed output format slightly.
+
+	* vpath.c (struct vpath, construct_vpath_list,
+	selective_vpath_search): Remove the `exists' member and its uses.
+
+	* vpath.c (print_vpath_data_base): New function to print all
+	selective and general VPATH search paths (for -p).
+
+	* make.c (print_data_base): Call print_vpath_data_base.
+
+	* file.c (print_file_data_base): Changed format to look more like a
+	makefile rule.  Now reports all information in the `struct file'.
+
+	* rule.c (print_rule_data_base): Changed format of display from:
+	  %: (terminal)
+	   depends on: RCS/%,v
+	to:
+	  %: RCS/%,v
+	    is terminal.
+	    references nonexistent subdirectory.
+	Also include number and percent that refer to nonexistent
+	subdirectories.
+
+Thu Apr 27 15:45:40 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* make.c (main): Figure out the level of recursion before writing
+	the `Entering directory' message.
+	* variable.c (define_automatic_variables): Don't figure out the
+	level of recursion from `MAKELEVEL'.  It's now done in main.
+
+	* Version 3.48.
+
+Wed Apr 26 16:39:17 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* commands.c (child_handler): Set `update_status' to zero when there
+	are no more commands.
+
+	* make.c (log_working_directory): If MAKELEVEL > 0, indicate the
+	recurson in the message (make[1]: ...).
+
+	* commands.c (child_handler): Change status to `cs_finished' when
+	commands fail.
+
+	* commands.c (start_job): Return 0 (success) if there were no more
+	commands for the child.
+	(child_handler): Change the status to `cs_finished' when start_job
+	fails to start the commands.
+
+	* make.c (main): Don't handle SIGEMT if it's not defined.
+	Do handle SIGDANGER if it is defined.
+
+	* commands.c (child_handler): Reorganized inner loop so that it
+	doesn't try to inspect the child before finding it.
+
+Tue Apr 25 16:28:24 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* make.c (end_of_token): Fixed bug wherein backslashes caused
+	immediate return.
+
+	* Version 3.47.
+
+	* make.texinfo (Implicit: Pattern Rules: Automatic): Document
+	setting of `$*' for explicit rules.  Add note clarifying that
+	automatic variables, though referred to in the documentation as
+	`$<', etc. are no different than `$(<)', etc.
+
+Fri Apr 21 18:00:12 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* file.c (enter_file): Don't strip leading `./'s.
+
+	* read.c (parse_file_seq): Strip leading `./'s.
+
+Thu Apr 13 17:26:41 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* make.texinfo (Commands: Parallel, Running: Options): Document that
+	-l with no argument removes a previous load limit.
+
+	* make.c (struct command_switch): New member `default_value'.
+	(default_job_slots): Default value (of 1) for -j.
+	(default_load_average): Default value (of 0, unlimited) for -l.
+	(command_switches): Use default values for -j and -l.
+	Also, -l without an arg now means no load limit.
+	(define_makeflags): Don't write positive_int or floating options
+	whose values are their defaults.
+
+	* make.c (main): Under -w, write a `Leaving directory' message
+	before re-execing.
+
+Tue Apr 11 16:46:29 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.46.
+
+	* Makefile: Provide an easy place for system-specific definitions
+	(-DUSG, etc.) and extra object files (for whatever).
+
+	* make.texinfo: Miscellaneous fixes from RMS.
+
+Mon Apr 10 19:31:34 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* rule.c (pattern_search): Put rules with `subdir' flags set in
+	TRYRULES, since these might be valid with VPATHs.  In the TRYRULES
+	loop, don't do lookup_file or file_exists_p calls for dependencies
+	of rules with `subdir' flags set, but still do vpath_search calls
+	and intermediate-file searches.
+
+Thu Apr  6 16:33:00 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* make.texinfo (Implicit: Pattern Rules: Automatic): Document the
+	new definition of $* for explicit rules.
+
+	* commands.c (execute_file_commands): If FILE->stem is nil, figure
+	out if FILE->name ends in a suffix in the .SUFFIXES list; if so,
+	store the name sans suffix in FILE->stem (and $*).
+
+Wed Apr  5 15:24:48 1989  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* file.c (remove_intermediates): Don't use `file_exists_p' to check
+	for the existence of intermediate files, because the hashed
+	directories will probably be out of date.
+
+	* commands.c (child_handler): Free the good stdin before running the
+	next command line.
+
+	* commands.c [USG] (init_siglist): Don't case SIGEMT if it's not
+	defined.  Do case SIGDANGER (for IBM RT) if it is defined.
+
+	* commands.c: Changed `SYS_WAIT' to `HAVE_SYS_WAIT'.
+	(child_handler): Use `wait3' if HAVE_SYS_WAIT is #defined.
+
+	* file.c (enter_file): If any `./'s are stripped off, allocate a new
+	copy of the shortened name.
+
+	* rule.c (pattern_search): Allocate the right length strings for
+	`also_make' members.
+
+Sat Apr  1 13:28:38 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.45.
+
+	* GNUmakefile: Make a separate tarfile of the DVI and info files.
+
+	* make.c (define_makeflags): If a switch that takes an argument has
+	its default value, put the switch in MAKEFLAGS with no arguments.
+
+	* make.c (command_switches): Pass `-l' in MAKEFLAGS.
+
+Wed Mar 29 17:50:05 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* GNUmakefile: Don't include the DVI and info files in the dist.
+
+	* commands.c (child_handler): Don't call
+	check_changed_{directories,vpaths}.
+
+	* make.h: Don't declare check_changed_{directories,vpaths}.
+
+	* vpath.c (check_changed_vpaths): Removed this function.
+
+	* dir.c (struct directory): Remove `modtime' member.
+	(find_directory): Don't set `modtime' member.
+	(check_changed_directories): Removed this function.
+
+	* remake.c (update_file_1): Set FILE->command_state to cs_finished
+	if it didn't need to be remade.
+
+	* remake.c (update_file): Only write the "up to date" message if the
+	target went from `not_started' state to `finished' state without
+	incrementing the count of files remade.
+
+	* commands.c [USG] (init_siglist): If both SIGCHLD and SIGCLD are
+	defined, don't put them both in the `switch'.
+
+Tue Mar 28 15:37:02 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* file.c (rename_file): Change FILE's name!!!
+
+	* rule.c (create_pattern_rule): Set the `terminal' member of the new
+	rule after calling new_pattern_rule, which zeros it.
+
+	* rule.c (default_variables): Use $(C++) in $(COMPILE.cc)!
+
+Sun Mar 26 15:52:30 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Makefile: Added a `clean' target.
+
+Fri Mar 24 15:08:46 1989  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* Version 3.44.
+
+	* file.c (rename_file): If a `struct file' for the renamed-to name
+	exists, and it is a target or has deps or commands, barf.
+	If not just remove the old one for put in the new one.
+
+	* remake.c (update_file_1, check_dep): Changed it back so that equal
+	modtimes to NOT make dependencies be considered newer.  RCS checks
+	out files with equal modtimes as the RCS files, so this screws it.
+
+	* make.h, glob.c: If __GNUC__ is defined, use __builtin_alloca.
+
+	* Makefile: Use variables `ALLOCA' and `ALLOCASRC' so systems
+	without a good standard alloca can get it from the Emacs
+	distribution (or somewhere).
+
+	* dir.c: Don't include <sys/stat.h>, since make.h does.
+
+	* make.c: Removed debugging version of getwd.
+
+Thu Mar 23 16:16:27 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.43.
+
+	* remake.c (update_file_1): If a dependency loop is found, don't
+	fatal.  Emit an error message and remove the dependency.
+
+	* remake.c (library_file_mtime): Fixed to use the right names.
+	(update_file_1, check_dep): Consider a dependency "newer" than its
+	dependent if they have the same modification time.
+
+Wed Mar 22 19:31:35 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* file.c (remove_intermediates): Don't try to remove nonexistent files.
+
+Mon Mar 20 10:21:22 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.42.
+
+	* rule.c (default_variables): Set F77 to $(FC) and F77FLAGS to
+	$(FFLAGS) so explicit rules expecting these (which are in System V)
+	will work.  However, there is no way to make setting these affect
+	the implicit rules, unless we trash FC and FFLAGS (which BSD uses).
+	[USG]: Set GET to `get' rather than `/usr/sccs/get'.
+
+Sun Mar 19 20:00:27 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* vpath.c (construct_vpath_list): Don't replace VPATH[ELEM] with
+	dir_name (V), because the latter may get freed.
+
+Sat Mar 18 15:01:39 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.41.
+
+	* make.texinfo: Cleaned-up edition 0.1 Beta from RMS and Bob Chassell.
+
+	* file.c (rename_file): If a file with the new name already existed,
+	use the same storage space, after freeing the old file's name, deps,
+	and `also_make' member, preserving the link in the chain.
+	Also write an error message telling the user to report the incident;
+	I don't think this should be able to happen, but I'm not sure.
+
+	* file.c (rename_file): Don't add the hash values of the old and new
+	names together!  Reset HASHVAL before computing the second value.
+
+	* dir.c (check_changed_directories): Zero the new file hash table
+	after allocating it.
+
+	* dir.c (dir_file_exists_p): If FILENAME is "", return 1 if the
+	directory exists.
+
+	* vpath.c (check_changed_vpaths): New function to run through the
+	search paths of all VPATHs, making the `exists' members correspond
+	to reality.
+
+	* commands.c (child_handler): Call check_changed_vpaths.
+
+	* make.h: Declare check_changed_vpaths.
+
+	* vpath.c (struct vpath): New element `exists', an array of char
+	flags; exists[N] is nonzero if searchpath[N] exists.
+	(construct_vpath_list): Set the `exists' member.
+	(selective_vpath_search): Don't search directories whose `exists'
+	elements are zero.
+
+	* read.c (read_makefile): Set the `dontcare' flag of makefiles
+	from the MAKEFILES variable if they were not mentioned anywhere but
+	in the MAKEFILES variable.
+
+	* read.c (read_makefile): Don't write an error message if fopen
+	fails for a makefile from the MAKEFILES variable.
+
+	* dir.c (struct directory): Add `modtime' member to record the
+	modification time of the directory when it was opened.
+	(check_changed_directories): New function to check all known
+	directories; if their modtimes have changed since they were opened,
+	their file tables are cleared and they are reset to be read in.
+
+	* commands.c (child_handler): Call check_changed_directories before
+	returning.
+	make.h: Declare check_changed_directories.
+
+Tue Mar 14 20:07:13 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.40.
+
+	* make.c (print_version): Made the copyright say 1988, 1989.
+
+	* read.c (read_all_makefiles): Don't set *MAKEFILES to the name of
+	the end of the read_makefiles chain, since the latter may be from an
+	included makefile.  (Why did I do this before?)
+
+	* make.c (main): Set argv[0] to "" if it was nil.  Don't put the
+	command-line variable definitions into argv[0], only into the MAKE
+	variable!
+
+Sun Mar  5 20:44:08 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* ar.c (ar_member_date, ar_touch): Remove the trailing ) from the
+	member name.
+
+Fri Mar  3 18:15:15 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* commands.c (construct_command_argv): Initialize NEW_ARGV to 0.  At
+	`slow' label, if NEW_ARGV is not 0, free it; then allocate 4 strings.
+
+Tue Feb 28 14:29:39 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.39.
+
+	* COPYING, make.texinfo: New GNU General Public License, version 1.
+
+	* *.c, *.h, Makefile: New copyright notices for the new GNU General
+	Public License, version 1.
+
+	* commands.c [USG]: Define WRETCODE correctly (again).
+
+	* variable.c (expand_function: `shell'): Don't capture the standard
+	error output of the shell command.
+
+	* ar.c (ar_touch, ar_member_date): Allocate MEMNAME with the right
+	length.
+
+	* load.c [not UMAX] (load_average): Don't clobber the first nlist
+	member when trying to set the second!
+
+Thu Feb 23 13:13:53 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* commands.c (child_handler): Really ignore errors under -i and for
+	- lines, don't just print a different message.
+
+	* make.c (decode_switches): Fixed handling of arguments (or lack
+	thereof) to switches.
+
+Wed Feb 22 16:25:39 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* commands.c (construct_command_argv): Don't clobber LINE when
+	checking the IFS variable.
+
+Sun Feb 19 11:17:07 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* load.c [UMAX, not NO_LDAV] (load_average): Return 0.0 rather than
+	randomness when calls fail.
+
+	* Version 3.38.
+
+	* commands.c (fatal_error_signal): If handling a user kill signal
+	(TERM, INT, HUP), wait for the children without printing the
+	"Waiting for children" message, since they will die quickly.
+
+	* Version 3.37.
+
+	* remote-stub.c (remote_status): Take another arg, BLOCK.  If this
+	is nonzero block waiting for remote children.  If not, return 0 if
+	we would have to block.
+
+	* commands.c (child_handler) [not USG]: If called as a signal
+	handler, use wait3 and don't block.
+	[USG]: If called as a signal handler, return after handling one child.
+
+Sat Feb 18 13:37:04 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* file.c (snap_deps): Process all double-colon entries of each file,
+	not just the first one.
+
+	* Version 3.36.
+
+	* remote-stub.c: remote.c renamed.
+	remote.c: Just include remote-stub.c
+
+	* commands.c (child_handler): If we were called as a signal handler,
+	return after handling one child.
+
+	* commands.c [not USG]: Include <signal.h> and define `sigmask' if
+	<signal.h> doesn't.
+	(block_children, unblock_children): Use sigmask rather than
+	bitshifting explicitly (and incorrectly).
+
+	* remote.c (remote_kill): New function to send a signal to a
+	remote child.
+
+	* commands.c (fatal_error_signal): If we get a SIGTERM, send one to
+	each living child.  If we get a SIGTERM, SIGINT, or SIGHUP, delete
+	all pending targets before waiting for children.
+	(struct child): Add new member `deleted'.
+	(start_job): Initialize `deleted' member to 0.
+	(delete_child_targets): New function to delete a given child's
+	targets, unless the `deleted' flag in the `struct child' says they
+	have already been deleted.  Sets this flag before returning.
+
+Thu Feb 16 18:32:07 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* commands.c [USG]: Define `WRETCODE' correctly (X & 0xff00).
+
+Tue Feb 14 16:05:00 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* commands.c (construct_command_argv): Don't make the 0th element of
+	the argument list be "sh" when executing /bin/sh, because start_job
+	uses the 0th element as the program name.
+
+Sun Feb 12 17:42:05 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.35.
+
+	* read.c (readline): Put a null in the beginning of the buffer
+	before starting the reading loop.
+
+	* read.c (read_makefile): Made main reading loop while
+	!feof (infile), and removed EOF check after calling readline.
+
+Sun Feb  5 19:52:38 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* remote.c (block_remote_children, unblock_remote_children): New
+	(stub) functions to block and restore asynchronous notification of
+	remote child death.
+
+	* commands.c (block_children): Call block_remote_children.
+	(unblock_children): Call unblock_remote_children.
+	(child_handler): If called as a signal handler, block remote
+	children on entry and unblock them before returning.
+
+	* commands.c (child_handler): For unknown children, if they are
+	remote, give their remote ID; if local, give their PID and make's.
+
+	* commands.c (execute_file_command): Don't put a new child in the
+	chain unless start_job succeeds.  Block children before calling
+	start_job, and unblock them after putting the child in the chain and
+	incrementing `job_slots_used' (if start_job succeeded).
+
+	* commands.c (block_children, unblock_children): Make these globally
+	visible (not `static').
+	commands.h: Declare block_children and unblock_children.
+
+	* variable.c (expand_function: `shell'): Use
+	`shell_function_completed'.  Block children before forking and
+	unblock after `shell_function_pid' is set properly and
+	`shell_function_completed' is reset to 0.
+
+	* commands.c (child_handler): When the child of the `shell' function
+	completes, set `shell_function_completed' to 1 if it actually ran,
+	or -1 if it didn't (due to fork or exec failure).
+
+	* commands.c (block_children, unblock_children): New functions to
+	block and unblock the child termination signal.
+	(wait_for_children): Use block_children and unblock_children.
+	(execute_file_commands): Block children around the critical section
+	wherein a new child is put on the chain.
+
+	* make.c (main): Change the environment to contain the correct
+	MAKELEVEL before re-execing.
+
+Sat Feb  4 18:28:48 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.34.
+
+Fri Feb  3 16:36:49 1989  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* rule.c (default_variables): Fixed $(LINK.c).
+
+Wed Feb  1 18:05:07 1989  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)
+
+	* Version 3.33.
+
+	* version.c: Removed copyright notice, since this is a one-line file.
+
+	* commands.c (error_status): Made it return BUF, rather than running
+	off the end (this apparently worked on Sun 3s for some reason).
+
+	* ar.c, commands.c, dep.h, load.c, make.c, make.h, read.c, remake.c,
+	rule.c, variable.c, Makefile: Changed copyrght notices to cover 1989.
+
+Mon Jan 30 15:51:28 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* Version 3.32.
+
+Fri Jan 27 20:09:24 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* remake.c (remake_file): Don't touch phony targets.
+
+	* rule.c (convert_to_pattern): Fixed an incorrect length passed to
+	savestring.
+
+	* variable.c (expand_function: `shell'): Close the read side of the
+	pipe on the parent side of the fork.
+
+	* commands.c (start_job): On the child of the fork, close the
+	BAD_STDIN fd if we're not using it.
+
+	* read.c (record_files): A file beginning with a dot can be a
+	default target if it also contains a slash (as in `../foo').
+
+	* commands.c (wait_for_children): For BSD, block SIGCHLD rather than
+	ignoring it to avoid a race condition when child_handler is returning.
+
+	* commands.c (child_handler): Do blocking waits.
+	(error_status): Return a string describing exit status.  (Split out
+	of child_handler).
+
+	* read.c (multi_glob): Change VECTOR to VEC for Alliant.
+
+Thu Jan  5 00:06:51 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* Version 3.31.
+
+	* make.texinfo (Features): Noted $(foo:PAT=SUB) from SunOS 4.0.
+
+	* make.texinfo (Options/Recursion): -d and -p go in the environment.
+
+	* load.c: Include "commands.h".
+
+Wed Jan  4 17:49:25 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* make.c (switches): -d and -p can come from the environment and are
+	put into it.
+
+	* read.c (record_files): Fixed the checking for duplicate deps so it
+	doesn't clobber the first one.
+
+	* make.texinfo: Documented default implicit rule changes.
+
+	* rule.c: Revamped default suffix rules.  They now use Sun's style
+	of using variables `COMPILE.c', `LINK.c', etc. for each suffix, and
+	use `TARGET_ARCH' and `TARGET_MACH' variable where appropriate.
+	Also support Modula-2 compilation (suffixes .sym, .def, and .mod).
+	Ratfor Yacc support is gone, since nobody has yacc -r.
+	All EFL support is gone, since nobody uses EFL.
+
+	* ar.c, arscan.c: Don't assume `long int' and `int' are the same.
+
+	* commands.c [USG]: Fixed wait status bit encoding.
+	[USG and not USGr3] (dup2): Define this for SysVr2.
+
+	* make.h, dep.h, make.c [iAPX286]: Make allowances for this
+	brain-damaged compiler.
+
+	* make.texinfo (Variables: Flavors): Fixed a typo.
+
+Tue Jan  3 18:09:31 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* ar.c (ar_member_date, ar_touch): Truncate member names to 15 chars.
+
+	* Version 3.30.
+
+	* commands.c [SYS_WAIT]: If this is defined, use BSD <sys/wait.h>
+	and wait3 even if USG.
+
+	* read.c (record_files): Defining .DEFAULT with no deps or commands
+	clears its commands.
+
+	* rule.c (default_suffixes): Added `.sh'.
+	(default_suffix_rules): Added single-suffix .sh rule, copies source
+	to target and makes target executable.
+	make.texinfo (Catalogue of Rules): Documented .sh rule and its use
+	in conjunction with SCCS.
+
+	* rule.c (set_default_suffixes): Define variable `SUFFIXES' to the
+	default list ("" under -r).
+	make.texinfo (Suffix Rules): Document `SUFFIXES' variable.
+
+	* rule.c (default_variables), make.texinfo (Implicit Variables):
+	Variable AR defaults to `ar', ARFLAGS to `rv', and RM to `rm -f'.
+
+	* rule.c (install_default_pattern_rules): Default variables are made
+	recursive.
+	(default_variables): Added "CPP", defined to "$(CC) -E".
+	(default_suffixes): Added `.S', before `.s'.
+	(default_suffix_rules): New rule for .S to .s, runs CPP.
+	All rules that use CPP now include "$(CPPFLAGS)".
+	make.texinfo (Catalogue of Implicit Rules, Implicit Variables):
+	Documented above changes.
+
+	* commands.c [USG] (sys_siglist): Don't define.
+	[USG] (init_siglist): New function to initialize sys_siglist.
+
+	* make.texinfo (Variables: Reference): Documented `$(foo:PAT=SUB)'
+	references.
+
+	* variable.c (variable_expand): A reference `$(foo:PAT=SUB)' is
+	equivalent to `$(patsubst PAT,SUB,$(foo))'.
+
+	* variable.c (variable_expand): Free the storage for the expansion
+	of a recursive variable when it is nod longer needed.
+
+	* variable.c (variable_expand): When checking for `$($(foo))', use
+	lindex so as not to search for the second `$' outside the parens.
+
+	* make.c (struct stringlist, main, decode_switches): Changed `index'
+	member to `idx'.
+
+Sat Dec 24 16:02:32 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* commands.c (wait_for_children [USG]): Handle SIGCLD with SIG_DFL,
+	rather than SIG_IGN.  Ignoring SIGCLD reportedly makes wait return -1.
+
+	* arscan.c [USGr3]: Define PORTAR to 1 (as with sun386).
+	(ar_scan [USGr3]): Remove trailing slashes from member names.
+
+Thu Dec 22 17:54:05 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* make.texinfo (Makefiles: Overriding Makefiles): New node
+	documenting use of .DEFAULT to have one makefile defer unmakeable
+	targets to another.
+
+	* make.texinfo (Implicit: Using Implicit, Implicit: Last Resort):
+	Mention empty commands and xref node `Empty Commands'.
+
+Wed Dec 21 20:12:40 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* Version 3.29.
+
+	* make.c (struct command_switch, command_switches, et al): New
+	member `noarg_value', if not nil, ptr to value to use if no arg is
+	given to a switch that would otherwise require one.  The -j option
+	can now be given w/o an arg, to mean infinite jobs.
+	* commands.c: If job_slots is zero, infinite jobs.
+
+	* read.c (read_all_makefiles, read_makefile): Make makefiles precious.
+
+	* make.c (decode_switches): For a positive_int or floating option,
+	if we moved to the next argument word, but found no argument for the
+	option, move back to the correct word.
+
+	* make.c (decode_switches): If we got any unknown options, die after
+	processing all arguments.
+
+	* GNUmakefile: Moved `include depend' to the end, so the default
+	goal will be set before then.
+
+	* load.c (wait_to_start_job [Unix, UMAX]): Merged into one version
+	under #ifdef LDAV_BASED.  Only loop while we have jobs running.
+	Sleep for increasing amounts (increase one second per iteration)
+	before checking the load average (after the first check).
+	Get the load average from function load_average.
+	(wait_to_start_job [not LDAV_BASED]): Always return.
+	(load_average [UMAX]): Fetch load average for Encore UMAX.
+	(load_average [not NO_LDAV]): Fetch load average from /dev/kmem.
+	[not NO_LDAV]: Define LDAV_BASED.
+
+Tue Dec 20 18:54:50 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* Version 3.28.
+
+	* commands.c (wait_for_children): Take second arg, ERROR.  If
+	nonzero, and there are children, print a message on stderr.
+	(execute_file_commands, fatal_error_signal): Pass second arg.
+	* make.c (die), remake.c (update_goal_chain), variable.c
+	(expand_function: `shell'): Ditto.
+
+Sat Dec 17 01:05:38 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* commands.c (start_job): Call wait_to_start_job before forking.
+
+	* load.c (load_average): Converted to wait_to_start_job.
+
+	* remote.c: New file for remote execution functions.
+	(start_remote_job_p): Return nonzero if the next job should be run
+	remotely.
+	(start_remote_job): Start a remote job and return an ID for it.
+	(remote_status): Get status of dead remote children.
+
+Fri Dec 16 16:51:07 1988  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)
+
+	* commands.c (start_job): If start_remote_job_p () returns nonzero,
+	call start_remote_job to start the job rather than fork and exec.
+	(child_handler):
+
+	* commands.c (execute_file_commands): Moved load average checking to
+	start_job.
+
+	* commands.c (child_handler: USG): Record the pid wait returns.
+
+	* load.c (UMAX): Added some #include's needed for UMAX.
+
+	* read.c (multi_glob), variable.c (string_glob): Ignore a (char **)
+	-1 return from glob_filename.
+
+	* variable.c (variable_expand): Make sure we don't increment past
+	the end of the string we were passed.
+
+	* variable.c (variable_expand): Terminate the expansion.
+
+	* file.c (rename_file): If there is already a file under the new
+	name, set its contents equal to FILE's (ick).
+
+	* variable.c (define_automatic_variables): Pass all the args to
+	define_variable when defining MAKELEVEL!
+
+	* commands.c (execute_file_commands): If max_load_average > 0, and
+	we have children running, don't start up another child until the
+	load average goes below max_load_average.
+
+	* make.c: New variable `max_load_average'.
+	(struct command_switch, decode_switches, decode_env_switches):
+	Handle floating-point (double) args.
+	(command_switches): Added `-l' switch to set `max_load_average'.
+
+	* load.c (load_average): New file and function to return a double
+	that is the current load average (1.00 scale).
+	* GNUmakefile, oldMakefile: Pass flags in $(LOAD_AVG) for load.c.
+
+Thu Dec 15 15:22:08 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* Makefile: Renamed to oldMakefile.
+	* GNUmakefile: Make Makefile from oldMakefile and depend.
+
+	* read.c (read_all_makefiles): When putting the default makefiles in
+	the read_makefiles chain so they will be remade, put them in the
+	right order.
+
+	* remake.c (update_goal_chain): If MAKEFILES is nonzero, always make
+	in serial, and return as soon as one goal whose `changed' member is
+	nonzero  is successfully remade.
+
+	* commands.c: Don't include <sys/fcntl.h>.
+
+	* commands.c (construct_command_argv): Added ` to sh_chars.
+
+	* make.h: Don't declare construct_makeflags.
+
+	* make.c (main): Set up MAKEFLAGS and MFLAGS and make an environment
+	both before and after reading the makefiles, so the makefiles can
+	use them and possible change them, and later children will get the
+	right information.
+	(construct_makeflags): Replaced with define_makeflags (static void),
+	which defines the two variables.
+	* variable.c (define_automatic_variables): Don't define MAKEFLAGS
+	and MFLAGS.
+
+Mon Dec 12 14:40:31 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* Version 3.27.
+
+	* commands.c (child_handler): Reset the handler to ourselves when
+	called for USG, since it has no safe signals.
+
+	* commands.c: For USG, use an int rather than a `union wait' for
+	wait calls, and dissect it with bitmasks.
+	(child_handler): No wait3 system call in USG.  Since we can't
+	protect from hanging, always return immediately if we have no
+	children we know about and we're not running a `shell' function.
+	(There is still the danger of hanging waiting for a child that died
+	without our being notified.)
+
+	* remake.c: Include <fcntl.h> instead of <sys/file.h>.  What we need
+	is really in <fcntl.h>, and while BSD <sys/file.h> includes
+	<fcntl.h>, USG doesn't.
+
+	* make.c (main): Figure out the program name before doing anything
+	which might need it (in a call to error or fatal).
+
+	* dir.c, glob.c: Use `struct dirent' and <dirent.h> for USGr3.
+
+	* arscan.c (ar_scan): Added missing & before buf (which is an int)
+	if SARMAG is not defined (SysV).
+
+Fri Dec  9 18:44:13 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)
+
+	* Version 3.26.
+
+	* dir.c (find_directory, dir_file_exists_p): Keep track of how many
+	directories we have open and don't let it be more than
+	MAX_OPEN_DIRECTORIES (currently 10).
+
+	* variable.c (expand_function: `foreach'): Use expand_argument
+	rather than variable_expand so each repetition doesn't clobber the
+	last!!!
+
+Mon Dec  5 15:58:46 1988  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)
+
+	* Version 3.25.
+
+	* Makefile: Define `install' target.
+
+	* GNUmakefile: Don't include GNUmakefile or depend in the
+	distribution file.
+
+Wed Nov 30 15:53:42 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* commands.c (execute_file_commands): Don't clobber a null into
+	random storage if there were no $^ and/or $? words.
+
+	* remake.c (check_dep): Set *MUST_MAKE_PTR nonzero if a dependency
+	doesn't exist.
+
+	* ar.c (ar_member_date, ar_touch): Make sure the modtime of the
+	archive file itself is known before we fetch or change the modtime
+	of one of its members.
+
+	* read.c (read_makefile): Expand variable and function references
+	before parsing rules so variable can contain special characters
+	(colons and semicolons).
+
+Sat Nov 26 11:36:31 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* variable.c (expand_function: `filter', `filter-out'): Fixed so
+	that filter-out works right.
+
+	* variable.c (expand_function: `filter', `filter-out'): Made these
+	functions use each word of their first argument as a pattern.
+
+Fri Nov 25 10:51:47 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.24.
+
+	* read.c (record_files): If a target is listed more than once in a
+	single rule (that defines commands), give a warning message rather
+	than the counter-intuitive message saying commands were already
+	defined (in the same place).
+
+	* make.c (fatal, error): Made them both take 6 args since there is
+	at least one error message that need that many.  Too bad vfprintf is
+	not universal!
+
+	* Version 3.23.
+
+	* read.c (read_makefile): Moved the construction of the `struct
+	commands' into record_files.  Call record_files before recursing for an
+	included makefile so the higher-up will determine the default goal.
+	(record_files): Take arguments COMMANDS, COMMANDS_IDX and
+	COMMANDS_STARTED and construct a `struct commands.
+
+Thu Nov 24 14:36:33 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.22.
+
+	* make.c (main): Made it a fatal error if we can't move back to the
+	directory we started in before re-execing.
+
+	* make.c (main): Get the current directory before doing anything
+	else, so we know it even if we don't need it for the value of
+	`MAKE', since we might want it when re-execing.
+
+Wed Nov 23 13:34:44 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* Version 3.21.
+
+	* read.c (record_files): Eliminate duplicate deps in a chain.
+
+	* variable.c (expand_function: `sort'): Pass the right number to
+	qsort, not one less.
+
+	* remake.c (remake_file): Always call notice_finished_file if
+	FILE->command_state == cs_finished.
+
+	* commands.c (execute_file_commands): Call notice_finished_file to
+	set FILE's status correctly when start_job fails (because it's out
+	of commands or running under -n).
+
+Fri Nov 18 15:31:12 1988  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)
+
+	* Version 3.20.
+
+	* remake.c (update_file_1): Set the `update_status' of FILE to
+	nonzero and set FILE's `updated' bit if we have decided to give up
+	on remaking FILE because of errors in the dependencies.
+
+	* rule.c (pattern_search): Debugging messages use `dependency' (vs.
+	`dependent') properly.
+
+	* make.texinfo (Conditionals: Conditional Syntax): Function index
+	entries for `ifndef' and `ifneq'.
+
+	* variable.c (define_automatic_variables): Define `MAKELEVEL' to the
+	decimal number of the makelevel, since it may be malformed or blank.
+
+	* remake.c (remake_file): Call notice_finished_file after touching.
+
+Sat Nov 12 19:29:34 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* Version 3.19.
+
+	* GNUmakefile (dist): Pass the `-f' flag to compress.
+
+	* vpath.c (build_vpath_lists): Check for VPATHS being nil after
+	constructing the general VPATH list from the `VPATH' variable.
+
+Fri Nov 11 08:02:26 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* make.c (fatal, error): Made error messages for recursive runs be
+	shorter.
+
+Thu Nov 10 16:51:36 1988  Roland McGrath  (mcgrath at basil.Berkeley.EDU)
+
+	* Version 3.18.
+
+	* read.c (read_makefile): Made it eat leading spaces and formfeeds
+	(but not tabs), like it's documented to.
+
+	* read.c (read_makefile): Let included makefiles determine the
+	default goal, as is done by System V Make.
+
+Tue Nov  1 19:03:08 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* variable.c (new_environ): Don't increment VCNT when a variable is
+	rejected.
+
+Fri Oct 28 16:54:15 1988  Roland McGrath  (mcgrath at basil.Berkeley.EDU)
+
+	* Version 3.17.
+
+	* rule.c (convert_to_pattern): Don't use the same storage for a name
+	in two rules since new_pattern_rule may free this storage when a
+	rule is discarded.
+
+	* rule.c (new_pattern_rule): Undid useless change I made Oct 25.
+
+Thu Oct 27 19:17:53 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* Version 3.16.
+
+	* GNUmakefile, Makefile: Fixed a typo in a comment.
+	* Makefile: Removed malloc.o from object file list.
+
+	* variable.c: Removed old debugging #define's for xmalloc and
+	xrealloc so non-ANSI cpp's won't barf.
+
+	* make.c (main): Made local array for temp file name static so
+	compilers that don't do auto aggregate initialization won't barf.
+
+	* read.c: Removed static declaration of copy_dep_chain since it is
+	no longer static.
+
+Tue Oct 25 16:59:30 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)
+
+	* rule.c (new_pattern_rule): If we threw out the new rule because it
+	matched an old one and OVERRIDE was zero, don't put the freed
+	pointer in the chain!
+
+Wed Oct 19 15:07:43 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)
+
+	* Version 3.15.
+
+	* variable.c (expand_function: `sort'): Don't do the sorting and
+	writing out if there were no words in the first place.
+
+	* remake.c (remake_file): Only fail with a "no way to make" message
+	for a dependency (non-target) file.  If we don't know how to remake
+	a target file, pretend it was successfully remade and is very new.
+
+	* remake.c (remake_file): Don't increment `files_remade' for a
+	non-target file we don't know how to remake.
+
+	* read.c (record_files): Don't die with "both : and :: entries" for
+	a file whose `is_target' flag is not set.
+
+Tue Oct 18 17:24:11 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* variable.c (expand_function: `patsubst', `subst'): Free the right
+	things!
+
+	* variable.c (expand_function: `subst'): Don't clobber the
+	pointer to the end of the second arg and then try to use it!!!
+
+Mon Oct 17 16:44:45 1988  Roland McGrath  (mcgrath at catnip.Berkeley.EDU)
+
+	* variable.c (expand_function: `patsubst'): Don't clobber the
+	pointer to the end of the second arg and then try to use it!!!
+
+	* variable.c (expand_function: `word' function): Made it parse its
+	second argument correctly.
+
+	* ar.c (ar_touch): Return 1 rather than -1 for on errors.
+
+Sat Oct 15 15:12:16 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* Version 3.14.
+
+	* GNUmakefile: Removed explicit rule for make.dvi since the built-in
+	implicit rule now works.
+
+	* rule.c (default_suffix_rules): Fixed .texinfo.dvi rule yet again
+	so that it really works, now that parens are counted.
+
+	* remake.c (update_file_1): Set FILE's `updated' flag after calling
+	remake_file if it failed or finished immediately.
+
+	* remake.c (update_file): Use the `updated' flag rather than the
+	command state to decide if a file was fully considered, and
+	therefore might give an "up to date" message.
+
+	* variable.c (expand_function): Made all functions that take more
+	than one argument count parens of the appropriate flavor in their
+	args and ignore commands nested in parens.
+
+Fri Oct 14 18:35:00 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* read.c (read_all_makefiles): Pass second arg to read_makefile for
+	default makefiles.
+
+Thu Oct 13 16:40:08 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* Version 3.13.
+
+	* GNUmakefile: Added an explicit rule for make.dvi since the
+	built-in .texinfo.dvi implicit rule is screwed up.
+
+	* rule.c (default_suffix_rules): Added a comment that the
+	.texinfo.dvi rule does not work because of an ahem, feature of Make
+	that at some point will be fixed--er, enhanced to alleviate this
+	difficulty.
+
+	* rule.c (default_suffix_rules): Fixed Texinfo -> DVI rule (again).
+
+	* make.texinfo (Commands: Execution): Documented new competing for
+	standard input among children.
+
+	* commands.c (struct child): Added `good_stdin' flag to tell if this
+	child has the stdin that doesn't point into nirvana.
+	(good_stdin_used): New variable to tell if any child has the good
+	standard input.
+	(child_handler): Reset `good_stdin_used' if a dead child's
+	`good_stdin' flag is set.
+	(start_job): Give the new child the good standard input if
+	`good_stdin_used' is no set, and set the child's `good_stdin' flag
+	appropriately.
+
+	* rule.c (default_suffix_rules): Changed Texinfo -> DVI rule to work
+	better (I hope).
+
+	* read.c (read_all_makefiles): Stop reading default makefiles after
+	one is found.
+
+	* read.c (read_makefile): Reset `reading_filename' and
+	`reading_lineno_ptr' after recursing for an included makefile.
+
+	* GNUmakefile: New GNU Make-specific makefile that does everything
+	Makefile does plus distribution stuff, and doesn't contain any hacks
+	to try to work with Unix make.
+
+	* Makefile: Removed distribution stuff.
+
+	* make.c (main): Use mktemp to construct the names of temporary
+	files used for standard input makefiles.
+
+	* make.c (main): Don't turn standard input into a broken pipe.
+
+	* commands.c (start_job): Keep two extra file descriptors around: a
+	good standard input, and a bad one that reads from a broken pipe.
+	On the child side of the fork, if there are other children, give
+	this one the broken pipe so they won't compete; if this is the only
+	one, give it the good standard input.
+
+	* make.h: Declare notice_finished_file.
+
+	* commands.c (execute_file_commands): Use noticed_finished_file
+	after waiting for the child when there is only one job slot.
+
+	* remake.c (notice_finished_file): New function to re-check mtime's
+	and such things to be done when commands finish.
+	(update_file_1): Use notice_finished_file.
+
+	* commands.c (child_handler, execute_file_commands): Use new
+	variable `job_slots_used' to record the number of jobs currently
+	running, rather than diddling with `job_slots'.
+	(execute_file_commands): Increment `job_slots_used' before calling
+	start_job and decrement it on failure to avoid race condition.
+	If there is only one job slot, wait for the child to finish and
+	return its status so commands are run in linear order, as if there
+	were no parallelism.
+
+Wed Oct 12 15:59:03 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* remake.c (remake_file): Don't print a "No way to make" message for
+	targets whose `dontcare' flags are set.
+
+	* read.c (read_all_makefiles): Set the `dontcare' flag of the
+	`struct file' each default makefile added to the chain.
+
+	* file.h (struct file): Add `dontcare' member.
+
+	* read.c (read_all_makefiles): When no default makefiles are found,
+	put the names of all those tried in the `read_makefiles' chain so
+	they will be updated if possible, giving their `struct dep's'
+	`changed' members the value of 0 so we won't care if they cannot be
+	found or remade.
+
+	* make.texinfo (Makefiles: Remaking Makefiles): Documented that
+	default makefiles will be remade if not found.
+
+	* read.c (read_all_makefiles): If no default makefiles can be found,
+	go through the list of default names, trying to make one, stopping
+	if one is made.
+
+	* remake.c (remake_file): Set STATUS to 0 after successfully touching.
+
+	* dir.c (file_impossible, file_impossible_p): Don't clobber FILENAME
+	to "" and then try to to a strcmp on it!!!
+
+Mon Oct 10 16:09:18 1988  Roland McGrath  (mcgrath at cinnamon.Berkeley.EDU)
+
+	* make.c (main): Don't do `dir_load (".")'.
+
+	* rule.c (count_implicit_rule_limits), vpath.c
+	(construct_vpath_list): Test the existence of a given directory by
+	`dir_file_exists_p (DIR, ".")' and assume that if this returns zero,
+	it means the directory really does not exist.
+
+	* dir.c (struct dirdata): Replaced with `struct directory' for
+	directories, each containing a chain of `struct dirfiles', one for
+	each file (real or impossible).
+	(dir_load): Removed.
+	(find_directory): New function to find the `struct directory' for a
+	named directory and return it (possibly creating a new one).
+	(dir_file_exists_p): Read the directory on the fly if its stream is
+	still valid (and ever was) if the file we're looking for is not
+	already in the hash tables.
+	(file_impossible, file_impossible_p, dir_name, print_dir_data_base):
+	Use the new directory/file scheme.
+
+	* make.texinfo: Miscellaneous editorial changes and clarifiactions.
+
+	* commands.c (struct child): Remove `environ' member.
+	(child_handler, start_job, execute_file_commands): Remove use of
+	`environ' member and new_environ.
+
+	* make.c (main): Call new_environ after reading makefiles.
+
+	* variable.h: Declare `new_environ' to return void.
+
+	* variable.c (new_environ): Put the environment in `environ' and
+	return void.
+
+Fri Oct  7 15:48:39 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)
+
+	* Version 3.12.
+
+	* Makefile: Don't make the uncompressed tar file.
+
+	* variable.c (expand_function: `shell' function): Made it not expect
+	read to null-terminate the buffer.
+
+	* Makefile: Made it use a temporary symlink to . rather than a
+	temporary directory to make the distribution tar file.
+
+Thu Oct  6 17:52:35 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.11.
+
+	* make.texinfo: Fixed a line that got garbaged somehow.
+
+Mon Oct  3 16:14:39 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* make.c (main): Try to move back to the directory we started in
+	before re-exec ourself.
+
+	* remake.c (update_file_1): A double-colon target with no deps
+	always needs to be remade.
+
+	* remake.c (remake_file): Changed "No way to make" message to say
+	`target' rather than `file'.
+
+Sun Oct  2 12:50:47 1988  Roland McGrath  (mcgrath at catnip.Berkeley.EDU)
+
+	* remake.c (update_file_1): Set FILE->update_status to the return
+	value of remake_file.
+
+	* rule.c (convert_to_pattern): Fixed swapped lengths passed to
+	xmalloc for source/target suffixes.
+
+	* make.texinfo: Documented that MAKEFLAGS and MFLAGS are read in
+	from makefiles.  Updated the `Features' section a bit.
+
+	* make.c (main): Read switches from MAKEFLAGS and MFLAGS variables
+	after reading in makefiles.
+
+	* make.c (main): Put a line "/tmp/foo:;" rather than ".PHONY:
+	/tmp/foo" in front of temp files made for stdin makefiles.
+
+	* remake.c (update_file): Test the state of the right `struct file'
+	for double-colon files.
+
+	* make.c (main): Put a ".PHONY: /tmp/foo" line in front of temp
+	files made for stdin makefiles so they won't be remade when we
+	re-exec.  Kludge-o-matic!!
+
+	* remake.c (update_goal_chain): Judge files as being finished based
+	on their `updated' flag, not their state.
+
+	* read.c (read_makefile): Don't check for FILENAME being "-".
+	(read_all_makefiles): Set each element of MAKEFILES to the name put
+	in READ_MAKEFILES by read_makefile, since read_makefile may free the
+	storage for the name it is passed, and someone might want to look at
+	the elements of MAKEFILES again.
+
+	* make.c (main): For each `-f' flag with arg `-' (standard input),
+	read standard input into a temp file and pass the temp file's name
+	to read_all_makefiles, after making sure it will not be remade.
+
+	* make.c (construct_makeflags): Always put out `-j1'.
+
+Sat Oct  1 00:19:59 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* commands.c (execute_file_commands): If commands are nothing but
+	whitespace, set the state to `cs_finished' before returning 0.
+
+	* make.c (decode_switches): Allocate space for args in stringlists
+	so they can be freed later.
+
+	* make.h: Declare `makelevel'.
+
+	* variable.c (makelevel): Moved to make.c (and made global).
+
+	* make.c (fatal, error): Print the makelevel if it's > 0.
+	(perror_with_name): Use error rather than calling fprintf directly.
+	(pfatal_with_name): Use fatal rather than fprintf and die.
+
+	* variable.c (new_environ): Don't put default variables (origin
+	`o_default') into the environment; they just take up space.
+
+	* read.c (read_makefile): Don't add FILENAME to the chain of read
+	makefiles if it's "-" (standard input).
+
+	* remake.c (update_goal_chain): Set STATUS correctly when nothing
+	happens (as well as in all other situations).
+
+	* make.c (construct_makeflags): Put a `-' before each switch and
+	spaces between them.
+
+	* Version 3.10.
+
+	* commands.c (wait_for_children): Don't check if `children' is nil.
+	This is the case when waiting for the child of a `shell' function.
+
+	* dir.c (dir_load): Don't add a hash-table entry for directory
+	DIRNAME and filename "" if DIRNAME doesn't exist.
+
+	* commands.c (execute_file_commands): Return 0 after start_job
+	returns 1 (failure) under the -n flag.
+
+	* remake.c (remake_file): Set the state to `cs_finished' when not
+	calling execute_file_commands.
+
+	* remake.c (update_goal_chain): Second arg is now MAKEFILES, nonzero
+	meaning to disable -t, -q, and -n for each target unless the target
+	was also given on the command-line.
+
+	* read.c (read_makefile): Enter the `struct file's for the makefiles
+	added to the `read_makefiles' `struct dep' chain.
+
+	* remake.c (update_goal_chain): Made it not enter the files for the
+	goals in the chain.  It will already have been done.
+
+	* rule.c (convert_to_pattern): Null-terminate the names of targets
+	and deps of the pattern rules properly.
+
+Fri Sep 30 18:56:20 1988  Roland McGrath  (mcgrath at nutmeg.Berkeley.EDU)
+
+	* make.c (main): Call install_default_pattern_rules.
+
+	* make.h: Declare copy_dep_chain.
+
+	* read.c (copy_dep_chain): Moved to make.c (and made global).
+
+	* make.c (main): Call update_goal_chain to update goals.
+	Update read makefiles and re-exec self if they change.
+
+	* remake.c (update_file): Make this function static.
+	(update_goal_chain): New function to update a `struct dep' chain of
+	goals, waiting until they are all finished before returning.
+
+	* make.h: Don't declare update_file.  Declare update_goal_chain.
+
+	* make.c (main): Call snap_deps, etc. that were in read_all_makefiles.
+
+	* read.c (find_makefile): Removed this function.
+	(read_all_makefiles): Don't update makefiles, don't diddle with
+	pattern rules, don't call snap_deps, etc.  Return a `struct dep'
+	chain of all makefiles read.
+	(read_makefile): Now takes two args: FILENAME and TYPE, which is 0
+	for a normal makefile, 1 for MAKEFILES variable or 2 for an included
+	makefile.  Add a `struct dep' containing the name of the makefile
+	(as it was found in the search path for type 2s), and TYPE in the
+	`changed' member to the global `read_makefiles' chain.
+
+	* make.h, rule.c (displace_pattern_rules,
+	add_displaced_pattern_rules): Removed these functions.
+
+	* read.c (read_makefile): Variable-expand the name of an `include'd
+	makefile before calling find_makefile on it.
+
+	* file.c (snap_deps): If the `struct file' for a `struct dep'
+	already exists, free the `struct dep's `name' member before setting
+	it to nil (since this info is in the `struct file').
+
+	* read.c (copy_dep_chain): Made it copy each name rather than
+	leaving multiple `struct dep's with the same pointers.
+
+Thu Sep 29 19:08:13 1988  Roland McGrath  (mcgrath at catnip.Berkeley.EDU)
+
+	* make.c (decode_switches): Fixed second decode_env_switches call to
+	use correct length of "MFLAGS" (6, not 5).
+
+	* read.c (read_makefile): Don't stop reading when readline returns
+	zero lines read.  Only stop when the stream reaches EOF.  This makes
+	it recognize the last line of a makefile without a newline.
+
+	* remake.c (remake_file): If we don't know how to make FILE, set its
+	command state to `cs_finished'.
+
+	* remake.c (update_file): Don't write the "up to date" message if
+	update_file_1 returned a nonzero status.
+
+Wed Sep 28 16:30:07 1988  Roland McGrath  (mcgrath at catnip.Berkeley.EDU)
+
+	* commands.c (child_handler): Set the `update_status' member
+	properly for ignored errors.
+
+	* rule.c (convert_to_pattern): Made it not care about if the target
+	suffix comes before the source suffix in the .SUFFIXES list.
+
+	* make.texinfo: Misc editorial changes.
+
+	* commands.c (wait_for_children): Return immediately if `children'
+	is nil (there are no children).
+
+Tue Sep 27 15:33:14 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)
+
+	* Version 3.09.
+
+	* commands.c (struct child): New member `command_ptr' to hold the
+	current position in the commands.  The `commands' member is never
+	changed.
+	(start_job, child_handler, execute_file_commands): Use new method
+	for `commands' and `command_ptr' members.
+
+	* make.c (decode_env_switches): Skip past an invalid letter (instead
+	of looping forever).
+
+	* commands.c (struct child): Add `environ' member to hold the
+	environment for this child.
+	(execute_file_commands): Get a new environment from new_environ and
+	put in the the new `struct child's `environ' member.
+	(child_handler): When freeing a child, free its `commands' member, the
+	elements of its `environ' array and its `environ' member itself.
+	(start_job): Set `environ' to the child's `environ' member before
+	exec'ing the command.
+
+	* variable.h, variable.c (new_environ): Made it return the new
+	environment, not putting it in `environ'.
+
+	* remake.c (update_file): Don't give a "is up to date" message
+	unless no files were remade and the state went from `cs_not_started'
+	to `cs_finished', so repeat calls to finish jobs won't get the message.
+
+Mon Sep 26 16:26:08 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* Version 3.08.
+
+	* make.texinfo (Commands: Execution): Documented that children will
+	be waited for rather than killed.
+
+	* commands.c (fatal_error_signal): Wait for children.
+	(kill_children): Removed this function.
+
+	* make.c (main, die): Wait for children to die, don't kill them.
+
+	* variable.c (expand_function): Use wait_for_children.
+
+	* make.c (main): Use wait_for_children rather than child_handler.
+
+	* commands.c (wait_for_children): New function to block waiting for
+	children, insuring that child_handler is not called recursively.
+	(execute_file_commands, kill_children): Use wait_for_children.
+
+	* commands.c (child_handler): Start up additional commands in a
+	sequence after an ignored error.
+
+	* remake.c (update_file): Don't print "`foo' is up to date" messages
+	when update_file_1 returns while commands are executing.
+
+	* remake.c (update_file_1): Pass the file name to name_mtime, not
+	the bloody `struct file', dammit!!
+
+	* commands.c (child_handler): Print out the "*** ..." error message
+	when not under -i.  (I somehow forgot this.)
+
+	* remake.c (update_file_1): Use name_mtime rather than file_mtime to
+	re-get the mtime of a file whose commands have finished.
+
+	* make.c (command_switches, decode_switches, decode_env_switches):
+	Make all switches that take string args allow them right after the
+	switch letter.
+
+	* commands.c (child_handler): Check for a child being the `shell'
+	function's command returning and set the global variable for
+	expand_function to check.
+
+	* variable.c (expand_function): For the `shell' function, instead of
+	waiting for the child shell ourselves, let child_handler do it and
+	loop around waiting for something to happen.
+
+	* make.c (print_version): Made the copyright year static, not dynamic.
+
+	* make.h, make.c: Remove construct_argv function.
+
+	* make.c (main): Say "no goal target" instead of "no target".
+
+	* make.texinfo (Commands: Parallel): Don't send SIGKILL.
+
+	* commands.c (kill_children): Don't send SIGKILL to children that
+	aren't killed by the first signal.
+
+	* make.c (main), commands.c (kill_children): Decide between SIGCHLD
+	and SIGCLD based on whether or not SIGCHLD is defined, not on USG.
+
+	* Makefile: Link make with $(LOADLIBES).
+
+	* read.c (construct_include_path): Fixed another bad xrealloc call.
+
+	* make.c (decode_switches): Fixed an xrealloc call with no first arg.
+
+Sat Sep 24 01:16:21 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* Version 3.07.
+
+	* remake.c (update_file_1): If deps are running, set state to
+	`cs_deps_running' and return 0.  If deps are done, run commands.
+
+	* commands.c (child_handler): Made it delete non-precious targets
+	killed by fatal signals.
+
+	* make.texinfo: Documented parallelism.
+
+Fri Sep 23 16:52:27 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* remake.c (update_file_1): Don't return if FILE's state is
+	`cs_deps_running'.  In that case, we need to run through and check
+	the states of all our dependencies.
+
+	* commands.c (execute_file_commands): Decrement `job_slots' after
+	starting a new job to run file commands.
+
+	* commands.c (start_job): Made it set the state to `cs_running'.
+
+	* make.c (main): Fixed usage of `g', `lastgoal', and `goals' in the
+	goal-making loop.
+
+	* commands.c (child_handler): When commands finish, set the
+	corresponding file's `update_status' and `updated' flags as
+	appropriate, and reset the modtimes of the file and any `also_make'
+	files it has.
+
+	* remake.c (remake_file): Don't re-set `last_mtime' and set `updated'.
+
+	* commands.c (fatal_error_signal): Don't swallow all the children
+	with a loop around `wait ((union wait *) 0)'!!!
+
+	* make.c (struct command_switch): Added `positive_int' type.
+	(switches): Added -j (job_slots).
+	(construct_makeflags, decode_switches, decode_env_switches):
+	Handle`positive_int'-type switches.
+
+	* glob.c (glob_vector): Rename local variable `vector' to `VeCtOr'.
+	This is said to avoid a conflict with some system's global `vector'
+	variable.
+
+	* variable.c (expand_function): Made the `shell' function use
+	construct_command_argv and do its own child control and piping.
+
+	* make.c (main): Turn standard input into a broken pipe after
+	reading in all makefiles (the last time it will be needed).
+
+	* commands.c (struct child): Remove `pipe_fd' member.  We don't use
+	pipes any more.
+	(start_job): Return 0 for success, 1 or failure (rather than void).
+	Don't use pipes.  Don't turn the child's stdin into a broken pipe.
+	(child_handler): Print "*** Error" messages when necessary.
+	Die on failed commands when -k was not given.
+	(execute_file_commands): Check the return of start_job and remove
+	the child from the chain and return failure if it is nonzero.
+
+	* make.c (die): New function to clean up and exit.
+	(fatal, pfatal_with_name): Use die.
+
+Thu Sep 22 14:27:11 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* commands.c (struct child): Added `commands', `pipe_fd', and
+	`noerror' members to keep track of info about a command thread.
+	(start_job): New function to start a job and update the argument
+	`struct child' to reflect its status.
+	(execute_file_commands): Merged run_file_commands back in.
+	Made it use new start_job function.
+
+	* rule.c (freerule): Don't free the `struct commands' of the
+	discarded rule.  It may be used in more than one place.
+
+	* commands.c (execute_command_line): Made it not try to delete the
+	possibly partly-made file.  The child_handler function will do this.
+	(fatal_error_signal): Ditto + call kill_children.
+
+	* make.h: Declare job_slots.
+
+	* make.c (main): Collect goals in a dep chain and run through this
+	chain waiting for a child, eliminating finished goals, updating all
+	remaining goals, and quitting if they fail and not -k.
+
+	* commands.c (child_handler): If called with SIG < 0, - SIG is the
+	max number of children to bury.
+
+	* commands.c (child_handler): If called with SIG as zero,
+	block waiting for running children.
+	(kill_children): Call child_handler with zero rather than SIGCHLD.
+
+	* remake.c (update_file_1): Use the `command_state' member of FILE
+	and its dependencies to determine what commands are running, what to
+	do, etc.  If commands or dep commands are running when we are
+	called, return success (0).  If commands finished since the last
+	time we were called, return their status.
+
+	* commands.h: Declare kill_children.
+
+	* commands.c: Define `struct child' to keep track of child
+	processes, with the chain in `children'.
+	(child_handler): New function to catch child-termination signals
+	(SIGCHLD, or SIGCLD for USG), store the returned status in the
+	appropriate structure, take the now-obsolete `struct child' out of
+	the chain, and free its storage.
+	(execute_file_commands): Put all of the stuff invloving running the
+	commands into new function run_file_commands.  Execute_file_commands
+	now does process management for the commands, while
+	run_file_commands (which is run in a subprocess) runs the commands.
+	(kill_children): New function to kill all running children by
+	sending them signal SIG.  If there are any children still living
+	after they are all sent SIG, they are all sent SIGKILL.
+
+	* make.c (main): Catch SIGCHLD (SIGCLD for USG) with child_handler.
+
+	* commands.h: Declare child_handler function.
+
+	* commands.c (execute_file_commands): Check the `command_state'
+	member of FILE and return 0 if it is `cs_running' or
+	`cs_deps_running' and return the stored status if it is `cs_finished'.
+
+	* file.h (struct file): Added `command_state' member.
+
+	* commands.c (execute_command_line): Add `$' to the list of
+	characters special to the shell.
+
+Wed Sep 21 15:57:41 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* read.c (read_all_makefiles): Call convert_to_pattern before
+	recomputing the limits after adding the displaced rules.
+
+	* make.c (main): Move calls to snap_deps, convert_to_pattern, and
+	build_vpath_lists to read_all_makefiles.
+
+	* read.c (read_all_makefiles): Install the default pattern rules
+	before checking to remake the makefiles, displace these rules before
+	reading in the makefiles, and then add the displaced rules to the
+	chain after reading in all the makefiles.
+
+	* make.c (main): Don't call install_default_pattern_rules or
+	count_implicit_rule_limits.
+
+	* make.h: Declare displace_pattern_rules and
+	add_displaced_pattern_rules.
+
+	* rule.c (displace_pattern_rules, add_displaced_pattern_rules): New
+	functions to stow the chain and add the stowed chain on the end of
+	the current chain.
+
+	* make.texinfo (Implicit: Search Algorithm): Fixed PREV reference.
+
+	* make.c (main): Call construct_include_path right after decoding
+	the switches.
+
+	* read.c (find_makefile): Use rename_file.
+
+	* file.h: Declare rename_file.
+
+	* file.c (rename_file): New function to rename a `struct file' and
+	put it in the correct hash bucket.
+
+	* read.c (find_makefile): New function to find and update a makefile.
+	 (read_all_makefilese): Use find_makefile.
+	 (read_makefile): Don't do updating.  Removed UPDATEIT arg.
+
+	* remake.c (update_file_1): Took out setting the `updated' member to
+	-1 rather than 1 sometimes.
+
+	* make.c (main): Made it print version info before doing anything else.
+
+	* remake.c (library_file_mtime, f_mtime): Removed use of last two
+	arguments to vpath_search.
+
+	* rule.c (pattern_search): Removed use of last two arguments
+	to vpath_search.
+
+	* vpath.c (vpath_search, selective_vpath_search): Removed unused
+	DIRPREFIX and DPLEN args.
+
+	* read.c (read_makefile): Also turn off -n when updating makefiles.
+
+Tue Sep 20 17:01:10 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)
+
+	* Makefile: Put tags files in the tarfile.
+
+	* read.c (read_makefile): Get the modtime of the makefile via a stat
+	call so that a later file_mtime call won't do VPATH search for it.
+
+	* read.c (read_makefile): Don't turn off -t and -q if the makefile
+	was a command-line target.
+
+	* make.c (main): Enter command-line targets as files and set their
+	`cmd_target' members.
+
+	* file.h (struct file): Added `cmd_target' member.
+
+	* read.c (read_makefile): Temporarily turn off -t and -q while
+	updating makefiles.
+
+	* make.c (main): Don't use arg 0 from other_args (which is now
+	argv[0]; i.e., the program's name).
+
+	* read.c (read_makefile): Only return nonzero if commands were
+	actually run to remake the makefile.
+
+	* remake.c (update_file_1): Set FILE->updated to -1 if no commands
+	were actually run (because no update was done or -t was given).
+
+	* make.c (decode_switches): Fixed bug wherein xrealloc was passed
+	bad args if it tried to expand other_args->list.
+
+	* read.c (read_all_makefiles): Made it not look at the `MAKE'
+	variable, just use argv[0].
+
+Sun Sep 18 17:34:11 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)
+
+	* read.c (rerun_make): New function to re-exec make.
+
+	* make.c (construct_makeflags, construct_argv): New functions to
+	construct the `MAKEFLAGS' variable and to construct an arg list from
+	parsed info.
+
+	* read.c (read_makefile): New arg UPDATEIT, if nonzero, says to
+	update the makefile as a target before reading it in.  When reading
+	included makefiles, pass this as zero.  Now returns nonzero if the
+	makefile was updated, zero if not.
+	(read_all_makefiles): Pass a nonzero UPDATEIT arg to read_makefile
+	for all default and -f makefiles and all makefiles from the
+	`MAKEFILES' variable.  If any of the makefiles has changed, re-exec
+	self to re-read them.
+
+	* remake.c (update_file): Print a "File `foo' up to date'" message
+	under -p.
+
+	* commands.c (execute_file_commands): Allocate one byte for each of
+	$^ and $< rather than zero if they are to be empty.
+
+Fri Sep 16 13:59:59 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* Version 3.06.
+
+	* make.c (command_switches): Fixed entry for `-o' switch.
+
+	* make.texinfo: Renamed -c switch to -C.
+
+	* make.c: Renamed -c switch to -C.
+
+	* Miscellaneous de-linting.
+
+	* read.c (record_files): Made it not free the storage for the name
+	if it started with `./' and was therefore not quite the same as in
+	the `struct file'.
+
+	* read.c (record_files): If commands were specified twice, the error
+	message specifies in what files and at what line numbers.
+
+	* make.c (main): If any of the signals we usually fatal on were
+	ignored by the parent (probably a shell), ignore them.
+
+	* make.c (main): Print version info for -v, -p, or -d.
+	(print_data_base): Don't print version info.  It will be done in main.
+
+	* variable.c: Increased number of hash buckets to 257.
+
+	* file.c: Increased number of hash buckets to 1007.
+
+	* rule.c (count_implicit_rule_limits): Moved comptation of
+	`maxsuffix' to convert_to_pattern, since that function uses
+	`maxsuffix', and must be called before count_implicit_rule_limits.
+
+	* rule.c (pattern_search): If an existent (non-intermediate)
+	dependency was found via a terminal rule, set its
+	`tried_implicit' flag, so it will never have implicit rule search done.
+
+	* glob.c: Bug fix to avoid alloca(0).
+
+	* arscan.c: USG and Sun386i fixes.
+
+Thu Sep 15 19:40:26 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* make.texinfo: Fixed some typos and spelling errors.
+
+Wed Sep  7 14:20:39 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)
+
+	* make.c (decode_switches): Fixed bug wherein a bad option would
+	give a useless error message and loop forever.
+
+Tue Sep  6 14:36:02 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* make.texinfo: Documented `shell' function.
+
+	* variable.c (expand_function): New function `shell', does
+	backquote-style command expansion of its arg.
+
+	* commands.c (execute_command_line): Second arg OUTBUF, if not nil,
+	gets filled in with a malloc'd buffer containing the piped stdout of
+	the command.
+	(execute_file_commands): Use above (pass nil).
+
+Mon Sep  5 17:03:49 1988  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)
+
+	* Makefile: Added copyright notice.
+	Added a comment about defining `NO_MINUS_C_MINUS_O' if necessary.
+
+	* Version 3.05.
+
+	* rule.c (default_suffix_rules): Don't pass `-o' switches with `-c'
+	switches if `NO_MINUS_C_MINUS_O' is #define'd.
+
+	* make.texinfo: Documented `GNUmakefile'.
+
+	* read.c (read_all_makefiles): Made it try default makefile
+	`GNUmakefile' before others.
+
+	* make.texinfo: Added new-style Texinfo header thingies.
+
+Sat Sep  3 18:09:39 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* Version 3.04.
+
+	* make.texinfo (Chained Rules): Added a @cindex about using
+	.PRECIOUS to preserve intermediate files.
+
+	* remake.c (update_file_1): Made it not just return before executing
+	commands under -p.
+
+	* rule.c (default_pattern_rules, default_variables): Made it use
+	`$(AR)' for `ar r' (to put files in archives).
+
+	* vpath.c (build_vpath_lists): Made it recursively expand the
+	`VPATH' variable (by using variable_expand instead of lookup_variable).
+
+	* read.c (conditional_line): Made it not swallow whitespace after
+	the comma in an `ifeq' using the `(a,b)' syntax.
+
+	* rule.c (count_implicit_rule_limits): Made it not crash if a
+	pattern rule dep begins with `/'.
+
+Sun Aug 28 15:51:12 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)
+
+	* make.texinfo: Clarified that the arg to the `origin' function is a
+	variable *name*, not a reference.
+
+	* make.texinfo: Clarified that both -Idir and -I dir are allowed.
+
+Sat Aug 27 13:49:28 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* remake.c (remake_file): Made touching phonies work right.
+
+Wed Aug 24 20:40:48 1988  Roland McGrath  (mcgrath at nutmeg.Berkeley.EDU)
+
+	* make.texinfo: Removed reference to `RANLIB' variable.
+
+	* Version 3.03.
+
+	* variables.c (expand_function): Added `origin' function.
+	* make.texinfo: Documented same.
+
+	* read.c (record_files): Made double-colon entries work.
+
+Sat Aug 20 21:09:39 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* make.c (collapse_continuations): Bug fix from RMS.
+
+	* rule.c (install_default_pattern_rules): Made it set the
+	`in_use' flag of the created rules to zero, rather than letting
+	it be random garbage.
+
+	* rule.c (pattern_search): Fixed putting `also make' targets into
+	file strucutres.
+
+	* read.c (record_files): Fixed bug which made double-colon entries
+	make it read off into space.
+
+	* make.c (decode_switches): Made it understand `ignored' switches
+	rather than dumping core.
+
+Sun Aug 14 16:49:00 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* read.c (read_makefile): Made `include' filenames be
+	variable-expanded.
+
+	* read.c (read_makefile): Fixed an error message.
+
+	* read.c (read_makefile): Made it accept ^L's as whitespace.
+	* make.c (next_token, end_of_token): Ditto.
+
+	* vpath.c (vpath_search): Fixed it so that the general VPATH (from
+	the variable) is always checked, even if a selective VPATH (from a
+	directive) matched the filename.
+
+Sat Aug 13 14:20:46 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* make.c (decode_switches, main): Made the command switches be
+	processed from a table of switches, variables, and types.  No
+	functions are passed argc and argv any more.  They are passed arrays
+	of strings they need to process.
+	* read.c (read_all_makefiles): Made it take an array rather than
+	argc and argv.
+	(construct_include_path): Ditto.
+
+	* make.c (collapse_continuations): Made it work right (I hope).
+
+	* make.texinfo: Minor editorial changes.
+
+	* read.c (read_makefile): Minor speed improvement by freeing and
+	then mallocing something rather than reallocing it to avoid the
+	unnecessary bcopy.
+
+Thu Aug 11 00:10:43 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* make.texinfo: Fixed some unquoted @'s.
+
+	* make.texinfo: Documented multiple-target pattern rules.
+	Miscellaneous minor editorial changes and corrections.
+
+	* make.texinfo (Implicit: Catalogue of Rules): Removed the list of
+	variables.  That's what the next section is for.
+	(Implicit: Implicit Variables): Made it agree with reality.
+
+Wed Aug 10 00:55:39 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* variable.c (print_variable_data_base): Fixed bug which made -p
+	dump core.  (This was a really idiotic bug.)
+
+	* rule.c (pattern_search): Fixed a bug which made it make the
+	`also_make' member of the file in question nil if the first of
+	the successful rule's targets was the matching one.
+	Made it use only as much storage as necessary in the `also_make'
+	member.
+	(create_pattern): Made it use only as much storage as necessary in
+	the `lens' and `suffixes' members of the created rule.
+
+	* remake.c (library_file_mtime): Made it `static'.
+
+	* file.c: Added a declaration for `errno', which is declared in some
+	<errno.h>'s, but not all.
+
+	* file.h (struct file): Added `also_make' member for multiple-target
+	implicit rules.
+	* rule.c (pattern_search): Made it put the names of files updated by
+	the given file's commands in its `also_make' member.
+	* remake.c (update_file_1): Made it mark the files in a file's
+	`also_make' member as updated when the file is updated.
+
+	* variable.c (try_variable_definition): Fixed a bug which made it
+	define a variable with the name of the whole definition when there
+	was no space before the = or :=.
+
+	* make.texinfo (Features): Made the changes which were made in RCS
+	revision 2.7 but somehow lost since then.  Added -W.
+
+Tue Aug  9 10:04:50 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* variable.h: Added `o_default' to `enum variable_origin'.
+	* variable.c (print_variable_data_base): Made it print the origins of
+	the variables.
+	* rule.c (install_default_pattern_rules): Made it define the default
+	variables with origin `o_default'.
+
+	* make.texinfo: Documented -W.
+
+	* make.c (decode_switches, main): Added the -W flag to give files a
+	time-stamp of now, for a `what if' effect when used with -n.
+
+	* commands.c (print_commands): Made it say `(built-in)' for commands
+	that are built into the default ruleset.
+
+	* read.c (record_file): Made .SUFFIXES get its deps frontwards (again).
+	* rule.c (set_default_suffixes, convert_to_pattern): Made it read
+	.SUFFIXES's deps frontwards, so the converted rules will not be in
+	reverse order.
+
+	* rule.c (new_pattern_rule): Fixed a bug wherein it would keep
+	searching after it had removed a matching rule and ended up diddling
+	with freed storage.
+
+	* rule.c (freerule): Made it take the given rule off the chain.
+	(new_pattern_rule, count_implicit_rule_limits): Use freerule to
+	remove rules from the chain.
+
+	* vpath.c (construct_vpath_list): Made it return after cleaning out
+	all previous searchpaths when given a nil DIRPATH arg, so it won't
+	go into the construction code and dump core dereferencing a nil
+	pointer.
+
+	* variable.c (patsubst_expand): Fixed a bug which made it not match
+	correctly and sometimes dump core.
+
+Mon Aug  8 16:35:48 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* rule.c (default_suffix_rules): Made the .texinfo.dvi rule remove
+	the files used in the comparison to determine whether or not a
+	second TeX run is necessary.
+
+	* make.texinfo: Fixed some overfull TeX hboxes.
+
+	* make.texinfo (Implicit: Catalogue of Rules): Fixed a Texinfo error.
+
+	* rule.c (create_pattern_rule): Fixed bug wherein index was not
+	being passed its second arg.
+
+	* read.c (getline): Merged back into readline.
+
+	* rule.c (default_suffixes, default_suffix_rules,
+	default_variables): Added .texinfo.info rule.
+	* make.texinfo (Implicit: Catalogue of Rules): Documented
+	.texinfo.dvi and .texinfo.info rules.
+
+	* make.texinfo (Top): Changed `last updated' date to be correct (for
+	the last time it was updated, not today).  Changed `for version
+	3.00' since it's not going to be called that.
+
+Sat Aug  6 19:51:10 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* commands.c (print_commands): Added this function to print the
+	contents of a `struct commands' for -p.
+	* rule.c (print_rule_data_base): Use above.
+	* file.c (print_file_data_base): Ditto.
+
+	* rule.c (count_implicit_rule_limits, new_pattern_rule,
+	install_pattern_rule, print_rule_data_base): Made it understand the
+	changed `struct rule' and act accordingly.
+	(freerule): Added this function to free all the storage used by a rule.
+
+	* rule.c (pattern_search): Made it grok multiple targets of pattern
+	rules.  The matching is done properly, but at present, only the
+	matching pattern's target is used to give deps and commands.
+
+Fri Aug  5 18:00:29 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* rule.c (struct rule): Changed name, namelen, and patsuffix members
+	to targets, lens, and suffixes, which are arrays, for multiple targets.
+	(create_pattern_rule): Now takes first arg TARGETS, a nil-terminated
+	array of targets, rather than a single target and patsuffix pointer.
+
+	* read.c (record_files): If it finds an implicit pattern rule, it
+	collects all the targets into an array and passes the whole thing to
+	create_pattern_rule.  If there are non-pattern targets, it is a
+	fatal error.
+
+Tue Aug  2 15:06:38 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* make.c (readline): Split backslash-newline checking from reading
+	and buffer-expanding.
+	(getline): Created to do the reading and buffer-expanding formerly
+	done in readline.
+
+	* rule.c (pattern_search): Made it reject nonterminal match-anything
+	rules when a specific rule has matched, rather than rejecting
+	terminal match-anything rules in this case.
+
+	* rule.c (convert_to_pattern): Fixed a bug caused when the change to
+	make it only recognize two-suffix rules whose target suffixes
+	precede their dependency suffixes which made it work in the opposite
+	direction (even worse than it started out).
+
+	* rule.c (pattern_search): Made it reject nonterminal match-anything
+	rules as intermediate targets when searching for both real and
+	intermediate dependencies, rather than only when searching for
+	intermediate ones.
+
+Sun Jul 31 00:33:56 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* rule.c (convert_to_pattern): Made it only recognize two-suffix
+	rules whose target suffix comes before the dependency suffix in the
+	.SUFFIXES list.
+
+	* variable.c (define_automatic_variables): Made all automatic
+	variables be defined with origin `o_automatic'.
+
+	* variable.h: Added `o_automatic' to `enum variable_origin'
+
+	* file.c (remove_intermediates): Made it not print an error message
+	if the error was that the file does not exist.
+
+	* rule.c: Removed `recursive' member from `struct rule'.
+
+	* remake.c (library_file_mtime): Made it not use the directory hash
+	functions, as reading in and hashing /usr/lib and /lib is slow and
+	most likely unnecessary.
+
+	* remake.c (remake_file): Changed message from ``No specification
+	for making'' to ``No way to make'' so it will be short enough that
+	most filenames will fit on a line.
+	Made it look at the `recursive' member of the `struct commands',
+	rather than of the `struct file' (which no longer has one).
+
+	* commands.c (execute_file_commands): Made it look at the
+	`recursive' member of the `struct commands', rather than of the
+	`struct file' (which no longer has one).
+
+	* file.h: Removed `recursive' member from `struct file'.
+
+	* commands.h: Added `recursive' member to `struct commands'.
+
+	* dep.h: Removed unused `quotedparen' member from `struct nameseq'
+	and `struct dep'.
+
+	* read.c (dequote): Removed this function.
+	(multi_glob): Removed reference to `quotedparen' member of
+	a `struct nameseq' and calls to dequote.
+
+	* read.c (record_files): Made it set the stem for $* for all static
+	pattern rules, not just those with commands given at that time.
+	Removed check for recursive commands.
+	Made it check for pairs of .SUFFIXES dependencies to reject as
+	default goals as well as single ones (that don't start with dots).
+	(read_makefile): Added checks for recursive commands to set
+	the `recursive' flag in the `struct commands'.
+
+Sat Jul 30 15:47:23 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* make.c (find_next_token): Made the LENGTHPTR arg optionally nil.
+
+	* make.c: Removed `files_made' variable which is defined static in
+	remake.c and used only there.
+	(main): Cleaned up somewhat.
+	(decode_switches): Cleaned up a bit.  Made an unknown option be a
+	non-fatal error.
+	(decode_env_switches): Made LEN arg unsigned.  Cleaned up.
+	(print_version): Made it say ``see the source'' rather than ``see
+	the source file'', since there is more than one.
+
+	* file.h: Made `num_intermediates' declared unsigned.
+
+	* file.c: Made `num_intermediates' variable unsigned.
+	(remove_intermediates): Removed unused FORMAT arg.
+	(enter_file): Made it handle double-colon files properly, adding the
+	new entry as the old entry's prev pointer.
+
+	* dir.c: Re-indented the `struct dir' definition to be right.
+	(dir_load): Cleaned up slightly.
+	(file_exists_p): Removed comment saying we could use `access', since
+	that is a bad idea (except for setuid programs).  Cleaned up slightly.
+
+	* commands.c: Changed some comments slightly.
+	(execute_file_commands): Cleaned up a bit.  Changed some comments,
+	added others.  Moved freeing of storage for $^ and $? to the same
+	place as for the other automatic variables.
+	(execute_command_line): Made `#' trigger a shell.
+	Added some comments.  Cleaned up a bit.  Put all the special chars
+	that trigger shells into an array easily changeable at the top.
+
+	* ar.c: Added comments explaining each function.
+	(ar_scan_1): Merged into ar_member_date.
+	(ar_member_date): Changed call to ar_scan_1 to the body of that
+	function.
+	(ar_member_date_1): Simplified to a ?: expression rather than an
+	if-else statement.
+	(ar_member_touch): Changed error handling around a bit.
+	None of these errors are fatal now.
+
+	* variable.c (subst_expand): Added a new arg BY_WORD, to do substs
+	only on full words.
+	(patsubst_expand): Fixed bug which made calls whose patterns
+	contained no `%' to not work correctly, by using above.
+	(variable_expand): Pass extra arg to `subst_expand'.
+
+	* variable.c (expand_function): Fixed bug which made `foreach' calls
+	with one-word lists run off into never-never land.
+
+Fri Jul 29 20:12:36 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* variable.c (expand_function): Made a very minor speed improvement
+	by avoiding an unnecessary strlen call.
+
+Wed Jul 27 16:01:47 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* rule.c (default_suffixes): Rearranged the list somewhat; added
+	`.el' and `.elc' to speed things up (especially when building
+	Emacs), for the same reason `.h' is there.
+
+	* read.c (record_files): Changed `lineno' from `long' to
+	`unsigned int'.
+
+Sun Jul 24 02:15:30 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* variable.c (expand_function): Eliminated use of `wstok'
+	because it is non-reentrant and unreliable.
+	Fixed a minor bug which would cause something not to be freed.
+	* make.c (wstok): Removed `wstok' because it is no longer used.
+
+	* variable.c (expand_function): Made `foreach' function put
+	spaces between output texts like it's supposed to.
+
+Sat Jul 23 17:32:55 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* rule.c (default_suffixes, default_suffix_rules): Added rule
+	to make %.dvi from %.texinfo.
+
+	* dir.c (print_dir_data_base): Made it say a bit more.
+
+Fri Jul 22 23:13:16 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* make.c (print_data_base): Split this function up into one
+	for each thing.
+	* variable.c (print_variable_data_base): One of the above.
+	* rule.c (print_rule_data_base): Ditto.
+	* file.c (print_file_data_base): Ditto.
+	* dir.c (print_dir_data_base): Ditto.
+
+	* rule.c (install_pattern_rule): Fixed a bug which caused the
+	terminal and recursive flags to always be zero for rules
+	entered by this function.
+
+	* make.texinfo (Rules: Double-colon): Added a paragraph
+	explaining the purpose of double-colon rules.
+
+	* make.texinfo (Implicit: Catalogue of Rules): Updated to
+	reflect new C++, TeX, Web, and Texinfo rules.  Other slight
+	editorial changes.
+
+	* commands.c (execute_file_commands): Fixed a bug wherein
+	random memory could get written for files with no deps.
+
+Wed Jul 20 19:30:31 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* read.c (readline): Fix bug wherein it would not recognize a
+	backslash-newline if the buffer filled up and was enlarged
+	right before reading the newline.
+
+Tue Jul 19 19:55:02 1988  Roland McGrath  (mcgrath at chilli.Berkeley.EDU)
+
+	* read.c: Added default suffix rules for .cc (using $(C++),
+	which defaults to `g++', and $(C++FLAGS)), .tex, .dvi, .web
+	and .cweb (using $(TEX), $(WEAVE), $(TANGLE), $(CWEAVE) and
+	$(CTANGLE)).
+
+Sat Jul 16 21:24:28 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* Made error formats use %u rather than %ld for line numbers,
+	which are now unsigned int's rather than long's.
+
+	* read.c (conditional_line): Fixed some bugs caused by use of
+	unsigned int rather than int in one place.
+
+	* read.c (conditional_line): Put the info about active
+	conditionals in a struct.
+	(read_makefile): Make a new struct of info about conditionals
+	for included makefiles and restore the old one after the
+	included makefile has been read.
+
+	* read.c (read_makefile): Don't try to read a makefile with
+	name "" after giving an error message because an `include'
+	directive gave no filename.
+
+	* read.c (read_makefile): Give an error message for
+	non-whitespace text after the filename in an `include' directive.
+
+	* make.c (error): Take five args, like `fatal'.  It managed to
+	lose with only two.  Is there a better way to do this without vfprintf?
+
+	* read.c (read_makefile): Commands consisting of only
+	whitespace are not the same as no commands.  I thought I'd
+	fixed this bug months ago; it seems to have come back.
+
+	* make.c (collapse_continuations): All whitespace around a
+	backslash-newline combination is turned into a single space.
+
+	* Added COPYING file and copyright notices to all files.
+
+	* make.texinfo (Running: Goals): Fix a typo.
+
+	* read.c (do_define): Take an arg for the origin of the
+	variable being defined.
+	(read_makefile): Grok `override define'.
+
+	* make.texinfo (Variables: Override Directive, Defining):
+	Document the `override define' combination directive.
+
+	* ar.c (ar_member_date): Make a 0 return from `ar_scan' return
+	(time_t) -1 (nonexistent file), rather than (time_t) 0, which,
+	when put in the `struct file', makes `file_mtime' try to get
+	the mtime over and over again.
+
+	* variable.c (pattern_matches): Fix a bug that made patterns
+	not beginning with `%' never match.
+
+Fri Jul 15 21:01:44 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)
+
+	* Took Make out of RCS.
+
+	* Split the monolithic `make.c' into several smaller files.
+
+
+
+Copyright (C) 1988-2009 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/ChangeLog.2 b/src/kmk/ChangeLog.2
new file mode 100644
index 0000000..0816454
--- /dev/null
+++ b/src/kmk/ChangeLog.2
@@ -0,0 +1,6653 @@
+2000-06-22  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (start_job_command): Increment commands_started before the
+	special check for ":" (empty command) to avoid spurious "is up to
+	date" messages.  Also move the test for question_flag after we
+	expand arguments, and only stop if the expansion provided an
+	actual command to run, not just whitespace.  This fixes PR/1780.
+
+2000-06-21  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (read_makefile): If we find a semicolon in the target
+	definition, remember where it was.  If the line turns out to be a
+	target-specific variable, add back the semicolon and everything
+	after it.  Fixes PR/1709.
+
+2000-06-19  Paul D. Smith  <psmith@gnu.org>
+
+	* config.h-vms.template: #define uintmax_t for this system.
+	* config.ami.template: Ditto.
+	* config.h.W32.template: Ditto.
+
+	* configure.in: We don't use select(2) anymore, so don't bother
+	checking for it.
+	* acconfig.h: Ditto.
+	* acinclude.m4: Ditto.
+
+	* file.c (all_secondary): New static global; if 1 it means
+	.SECONDARY with no prerequisites was seen in the makefile.
+	(snap_deps): Set it appropriately.
+	(remove_intermediates): Check it.
+	(num_intermediates): Remove this global, it's not used anywhere.
+	(considered): Move this to remake.c and make it static.
+
+	* NEWS: Document the change to .SECONDARY.
+	* make.texinfo (Special Targets): Document the change to .SECONDARY.
+
+	* implicit.c (pattern_search): Remove the increment of
+	num_intermediates; it's not used.
+	* filedef.h: Remove num_intermediates and considered.
+
+	* function.c (handle_function): If the last argument was empty, we
+	were pretending it didn't exist rather than providing an empty
+	value.  Keep looking until we're past the end, not just at the end.
+
+	* implicit.c (pattern_search): Multi-target implicit rules weren't
+	expanding the "also made" targets correctly if the pattern didn't
+	contain a slash but the target did; in that case the directory
+	part wasn't being added back to the stem on the "also made"
+	targets.  Reported by Seth M LaForge <sethml@newtonlabs.com>, with
+	a patch.
+
+2000-06-17  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* Makefile.DOS.template (DESTDIR, bindir, datadir, libdir)
+	(infodir, mandir, includedir): Support installation under a
+	non-default DESTDIR.
+
+	* remake.c (f_mtime): Fix the spelling of __MSDOS__.
+
+	* configh.DOS.template (HAVE_FDOPEN, HAVE_MKSTEMP): Define.
+
+2000-06-14  Paul D. Smith  <psmith@gnu.org>
+
+	* acinclude.m4 (pds_WITH_GETTEXT): rewrite fp_WITH_GETTEXT and
+	rename it to avoid confusion.  This version is very specific: it
+	won't accept any gettext that isn't GNU.  If the user doesn't
+	explicitly ask for the included gettext, we look to see if the
+	system gettext is GNU (testing both the actual libintl library,
+	and the libintl.h header file).  Only if the system gettext is
+	really GNU gettext will we allow it to be used.
+	(pds_CHECK_SYSTEM_GETTEXT): A helper function.
+
+2000-06-13  Paul D. Smith  <psmith@gnu.org>
+
+	* gettext.h: If we have libintl.h, use that instead of any of the
+	contents of gettext.h.  We won't check for libintl.h unless we're
+	using the system gettext.
+
+	* function.c (func_word): Clarify error message.
+
+2000-06-10  Paul Eggert  <eggert@twinsun.com>
+
+	Support nanosecond resolution on hosts with 64-bit time_t and
+	uintmax_t (e.g. 64-bit Sparc Solaris), by splitting
+	FILE_TIMESTAMP into a 30-bit part for nanoseconds, with the
+	rest for seconds, if FILE_TIMESTAMP is at least 64 bits wide.
+
+	* make.h: Always define FILE_TIMESTAMP to be uintmax_t, for
+	simplicity.
+
+	* filedef.h (FILE_TIMESTAMP_HI_RES, FILE_TIMESTAMP_LO_BITS)
+	(UNKNOWN_MTIME, NONEXISTENT_MTIME, OLD_MTIME)
+	(ORDINARY_MTIME_MIN, ORDINARY_MTIME_MAX): New macros.
+	(FILE_TIMESTAMP_STAT_MODTIME): Now takes fname arg.  All uses changed.
+	(FILE_TIMESTAMP_DIV, FILE_TIMESTAMP_MOD)
+	(FILE_TIMESTAMP_FROM_S_AND_NS): Remove.
+	(FILE_TIMESTAMP_S, FILE_TIMESTAMP_NS): Use shifts instead of
+	multiplication and division.  Offset the timestamps by
+	ORDINARY_MTIME_MIN.
+	(file_timestamp_cons): New decl.
+	(NEW_MTIME): Now just the maximal timestamp value, as we no longer use
+	-1 to refer to nonexistent files.
+
+	* file.c (snap_deps, print_file): Use NONEXISTENT_MTIME,
+	UNKNOWN_MTIME, and OLD_MTIME instead of magic constants.
+	* filedef.h (file_mtime_1): Likewise.
+	* main.c (main): Likewise.
+	* remake.c (update_file_1, notice_finished_file, check_dep)
+	(f_mtime, name_mtime, library_search): Likewise.
+	* vpath.c (selective_vpath_search): Likewise.
+
+	* remake.c (f_mtime): Do not assume that (time_t) -1 equals
+	NONEXISTENT_MTIME.  When futzing with time stamps, adjust by
+	multiples of 2**30, not 10**9.  Do not calculate timestamp
+	adjustments on DOS unless they are needed.
+
+	* commands.c (delete_target): Do not assume that
+	FILE_TIMESTAMP_S yields -1 for a nonexistent file, as that is
+	no longer true with the new representation.
+
+	* file.c (file_timestamp_cons): New function, replacing
+	FILE_TIMESTAMP_FROM_S_AND_NS.  All uses changed.
+	(file_timestamp_now): Use FILE_TIMESTAMP_HI_RES instead of 1 <
+	FILE_TIMESTAMPS_PER_S to determine whether we're using hi-res
+	timestamps.
+	(print_file): Print OLD_MTIME values as "very old" instead of
+	as a timestamp.
+
+2000-05-31  Paul Eggert  <eggert@twinsun.com>
+
+	* remake.c (name_mtime): Check for stat failures.  Retry if EINTR.
+
+2000-05-24  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (decode_switches): The "positive_int" switch uses atoi()
+	which succeeds for any input, and doesn't notice if extra,
+	non-digit text is after the number.  This causes make to mis-parse
+	command lines like "make -j 5foo" as "make -j5" (ignoring "foo"
+	completely) instead of "make -j0 5foo" (where "5foo" is a
+	target).  Fix this by checking the value by hand.  We could use
+	strtol() if we were sure of having it; this is the only
+	questionable use of atoi() I found so we'll just stick with that.
+	Fixes PR/1716.
+
+	* i18n/ja.po, i18n/nl.po, i18n/pt_BR.po: New translation files.
+	* configure.in (ALL_LINGUAS): Added pt_BR.
+
+2000-05-22  Paul Eggert  <eggert@twinsun.com>
+
+	* remake.c (f_mtime): Fix bug when handling future odd
+	timestamps in the WINDOWS32 case.  Do not bother initializing
+	static var to zero.  Simplify code that works around WINDOWS32
+	and __MSDOS__ time skew brain damage.
+
+2000-05-22  Paul Eggert  <eggert@twinsun.com>
+
+	* job.c: Don't include time.h, as make.h already does this.
+
+2000-05-22  Paul Eggert  <eggert@twinsun.com>
+
+	* configure.in (AC_CHECK_HEADERS): Add sys/time.h.
+	(AC_HEADER_TIME): Add.
+	(clock_gettime): Prefer -lrt to -lposix4, for Solaris 7.
+	(gettimeofday): Add check for standard version of gettimeofday.
+	This merges changes written by Paul D. Smith.
+
+	* file.c (file_timestamp_now):  Use gettimeofday if available
+	and if clock_gettime does not work.  Don't bother with
+	high-resolution clocks if file timestamps have only one-second
+	resolution.
+
+	* make.h <sys/time.h>: Include, conditionally on the usual
+	TIME_WITH_SYS_TIME and HAVE_SYS_TIME_H macros.  This is needed
+	for gettimeofday.
+
+2000-05-20  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (read_makefile): We weren't keeping makefile names around
+	unless there was a rule defined in them; but now we need to keep
+	them for variables as well.  Forget trying to be fancy: just keep
+	every makefile name we successfully open.
+
+	* remote-cstms.c (start_remote_job_p): Change DB_EXTRA (?) to DB_JOBS.
+
+2000-05-17  Paul Eggert  <eggert@twinsun.com>
+
+	* commands.c (chop_commands): Ensure ctype macro args are nonnegative.
+	* expand.c (variable_expand_string): Likewise.
+	* function.c (subst_expand, lookup_function, msdos_openpipe):
+	Likewise.
+	* job.c (vms_redirect, start_job_command, new_job, child_execute_job,
+	construct_command_argv_internal, construct_command_argv): Likewise.
+	* main.c (decode_env_switches, quote_for_env): Likewise.
+	* misc.c (collapse_continuations, end_of_token, end_of_token_w32,
+	next_token): Likewise.
+	* read.c (read_makefile, do_define, conditional_line,
+	find_char_unquote,get_next_mword): Likewise.
+	* variable.c (try_variable_definition): Likewise.
+	* vpath.c (construct_vpath_list): Likewise.
+	* w32/pathstuff.c (convert_vpath_to_windows32): Likewise.
+
+2000-05-10  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* main.c (main) [__MSDOS__]: Add SIGFPE to signals we block when
+	running child programs, to prevent Make from dying on Windows 9X
+	when the child triggers an FP exception.
+
+2000-05-08  Paul D. Smith  <psmith@gnu.org>
+
+	* dir.c (find_directory) [WINDOWS32]: If we strip a trailing "\"
+	from the directory name, remember to add it back.  The argument
+	might really be inside a longer string (e.g. %Path%) and if you
+	don't restore the "\" it'll be truncated permanently.  Fixes PR/1722.
+	Reported by <steven@surfcast.com>
+
+2000-05-02  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (construct_command_argv_internal) [WINDOWS32]: Added "rd"
+	and "rmdir" to the list of command.com commands.
+	Reported by Elod Horvath <Elod_Horvath@lnotes5.bankofny.com>
+
+2000-04-24  Paul D. Smith  <psmith@gnu.org>
+
+	* i18n/ja.po: New translation file from the Japanese language team.
+
+2000-04-18  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (f_mtime): If ar_member_date() returns -1 (the member
+	doesn't exist), then return (FILE_TIMESTAMP)-1 rather than
+	returning the timestamp calculated from the value -1.  Fixes PR/1696.
+	Reported by Gilles Bourhis <Gilles.Bourhis@univ-rennes1.fr>.
+
+2000-04-17  Paul D. Smith  <psmith@gnu.org>
+
+	* config.h.W32.template: Add LOCALEDIR macro resolving to "".
+	* w32/subproc/sub_proc.c (process_begin): Remove reference to
+	debug_flag; change it to a DB() call.  Fixes PR/1700.
+	Reported by Jim Smith <jwksmith@attglobal.net>
+
+2000-04-17  Bruno Haible  <haible@clisp.cons.org>
+
+	* arscan.c [BeOS]: Add replacement for nonexistent <ar.h> from GNU
+	binutils.
+
+2000-04-11  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (expand_builtin_function): If no arguments were
+	provided, just quit early rather than changing each function to
+	test for this.
+	(function_table[]): Change the min # of arguments to 0 for all
+	those functions for which it makes sense (currently everything
+	that used to take a minimum of 1 argument, except $(call ...)).
+	Fixes PR/1689.
+
+2000-04-09  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* README.DOS: Add instructions to install a binary distro.
+	Mention latest versions of Windows.
+
+2000-04-07  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* main.c (main): Rename TMP_TEMPLATE into DEFAULT_TMPDIR, and use
+	it for the directory of the temporary file.  If P_tmpdir is
+	defined, use it in preference to "/tmp/".  Try $TMPDIR, $TEMP, and
+	$TMP in the environment before defaulting to DEFAULT_TMPDIR.
+	(print_version): Add year 2000 to the Copyright line.
+
+2000-04-04  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.79 released.
+
+	* make.texinfo: Update documentation with new features for 3.79.
+
+	* function.c (func_wordlist): Don't re-order arguments to
+	wordlist.
+
+2000-04-03  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (f_mtime): Archive member timestamps are stored as
+	time_t, without nanoseconds.  But, f_mtime() wants to return
+	nanosecond info on those systems that support it.  So, convert the
+	return value of ar_member_date() into a FILE_TIMESTAMP, using 0 as
+	the nanoseconds.
+
+2000-03-28  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.78.92 released.
+
+	* build.template: Updates for gettext support; some bugs fixed.
+
+2000-03-27  Paul D. Smith  <psmith@gnu.org>
+
+	* config.guess, config.sub: Updated from config CVS archive at
+	:pserver:anoncvs@subversions.gnu.org:/home/cvs as of today.
+
+	* read.c (record_files): Check if expanding a static pattern
+	rule's prerequisite pattern leaves an empty string as the
+	prerequisite, and issue an error if so.  Fixes PR/1670.
+	(read_makefile): Store the starting linenumber for a rule in
+	TGTS_STARTED.
+	(record_waiting_files): Use the TGTS_STARTED value for the file
+	location passed to record_file() instead of the current
+	linenumber, so error messages list the line where the target was
+	defined instead of the line after the end of the rule definition.
+
+	* remake.c (start_updating, finish_updating, is_updating): Fix
+	PR/1671; circular dependencies in double-colon rules are not
+	diagnosed.  These macros set the updating flag in the root
+	double-colon file instead of the current one, if it's part of a
+	double-colon list.  This solution provided by Tim Magill
+	<magill@gate.net>; I just changed the macro names :).
+	(update_file_1): Call them.
+	(check_dep): Call them.
+
+	The change to not automatically evaluate the $(call ...)
+	function's arguments breaks recursive use of call.  Although using
+	$(if ...) and $(foreach ...) in $(call ...) macros is important,
+	the error conditions generated are simply to obscure for me to
+	feel comfortable with.  If a method is devised to get both
+	working, we'll revisit.  For now, remove this change.
+
+	* function.c (function_table): Turn on the expand bit for func_call.
+	(func_call): Don't expand arguments for builtin functions; that
+	will have already been done.
+
+2000-03-26  Paul D. Smith  <psmith@gnu.org>
+
+	* file.c (remove_intermediates): Never remove targets explicitly
+	requested on the command-line by checking the cmd_target flag.
+	Fixed PR/1669.
+
+2000-03-23  Paul Eggert  <eggert@twinsun.com>
+
+	* filedef.h (FILE_TIMESTAMP_STAT_MODTIME): Use st_mtime instead of
+	st_mtim.tv_sec; the latter doesn't work on Unixware.
+
+2000-03-18  Paul D. Smith  <psmith@gnu.org>
+
+	* file.c (file_hash_enter): If we're trying to change a file into
+	itself, just return.  We used to assert this wasn't true, but
+	someone came up with a weird case involving archives.  After
+	playing with it for a while I decided it was OK to ignore it.
+
+	* default.c: Define COFLAGS to empty to avoid spurious warnings.
+
+	* filedef.h: Change #if ST_MTIM_NSEC to #ifdef; this is a macro
+	containing the name of the nsec field, not true/false.
+	* make.h: Ditto.
+	Reported by Marco Franzen <Marco.Franzen@Thyron.com>.
+
+2000-03-08  Tim Magill  <magill@gate.net>
+
+	* remake.c (update_file): Return the exit status of the pruned
+	file when pruning, not just 0.  Fixes PR/1634.
+
+2000-02-24  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Close a minor potential security hole; if you're
+	reading makefiles from stdin (who does that?) you could run into a
+	race condition with the temp file using mktemp() or tmpnam().  Add
+	a check for mkstemp() and fdopen().
+	* main.c (open_tmpfile): New function to open a temporary file.
+	If we have mkstemp() (and fdopen()), use that.  If not use
+	mktemp() or tmpnam().  If we have fdopen(), use open() to open the
+	file O_CREAT|O_EXCL.  If not, fall back to normal fopen() (insecure).
+	(main): Call it.
+	* job.c (child_execute_job) [VMS]: Call it.
+
+	* variable.c (lookup_variable): If we find a variable which is
+	being expanded, then note it but keep looking through the rest of
+	the set list to see if we can find one that isn't.  If we do,
+	return that.  If we don't, return the original.  Fix for PR/1610.
+
+	While implementing this I realized that it also solves PR/1380 in
+	a much more elegant way.  I don't know what I was smoking before.
+	So, remove the hackage surrounding the original fix for that (see
+	below).  Change this function back to lookup_variable and remove
+	the extra setlist argument.
+	* variable.h (recursively_expand_setlist): Remove the macro,
+	rename the prototype, and remove the extra setlist argument.
+	(lookup_variable): Ditto.
+	* expand.c (recursively_expand): Rename and remove the extra
+	setlist argument.
+	(reference_variable): Use lookup_variable() again.
+	(allocated_variable_append): Remove the extra setlist argument.
+
+2000-02-21  Paul D. Smith  <psmith@gnu.org>
+
+	* README.template: A few updates.
+
+	* i18n/de.po: New version from the German translation team.
+
+2000-02-09  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.78.91 released.
+
+2000-02-07  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (read_makefile): Reset *p2 to ':', not *colonp.  If any
+	filenames contained backslashes the resulting output (without
+	backslashes) will be shorter, so setting *colonp doesn't change
+	the right character.  Fix for PR/1586.
+
+	For += target-specific variables we need to remember which
+	variable set we found the variable in, so we can start looking
+	from there in the next iteration (otherwise we might see it again
+	in recursively_expand and fail!).  This is turning into a hack; if
+	it gets any worse we'll have to rethink this entire algorithm...
+	implementing expansion of these references separately from the
+	"normal" expansion, say, instead of using the same codepath.
+	Actually, it's already "worse enough" :-/.
+	Fix for PR/1380.
+
+	* variable.h (recursively_expand_setlist): Rename
+	recursively_expand to add a struct variable_set_list argument, and
+	make a macro for recursively_expand.
+	(lookup_variable_setlist): Rename lookup_variable to add a struct
+	variable_set_list argument, and make a macro for lookup_variable.
+
+	* expand.c (recursively_expand_setlist): Take an extra struct
+	variable_set_list argument and pass it to allocated_variable_append().
+	(reference_variable): Use lookup_variable_setlist() and pass the
+	returned variable_set_list to recursively_expand_setlist.
+	(allocated_variable_append): Take an extra setlist argument and
+	use this as the starting place when searching for the appended
+	expansion.  If it's null, use current_variable_set_list as before.
+
+	* variable.c (lookup_variable_setlist): If the LISTP argument is
+	not nil, set it to the list containing the variable we found.
+
+2000-02-04  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (print_variable): Write out filename/linenumber
+	information for the variable definition if present.
+	(define_variable_in_set): Store filename information if provided.
+	(define_variable, define_variable_for_file): Removed.
+	(try_variable_definition): Use define_variable_loc() to keep
+	variable definition location information.
+	* read.c (read_makefile): Keep variable definition location info.
+	(do_define): Ditto.
+	(record_target_var): Ditto.
+	* variable.h (define_variable_in_set): New fileinfo argument.
+	(define_variable, define_variable_loc, define_variable_for_file):
+	Declare new macros.
+
+	Fix PR/1407:
+
+	* filedef.h (struct file): Rename patvar to pat_variables and make
+	it just a variable_set_list; we need our own copy of the pattern
+	variable's variable set list here to avoid overwriting the global
+	one.
+	* variable.c (initialize_file_variables): Move the instantiation
+	of the pat_variables pointer here.  Only do the search after we're
+	done reading the makefiles so we don't search too early.  If
+	there's a pat_variables value, set up the variables next ptr.
+	* expand.c (variable_expand_for_file): Remove the setup of the
+	pat_variables info; it's done earlier now to ensure the parent's
+	pattern variables are set up correctly as well.
+
+2000-02-03  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (sh_chars_dos) [WINDOWS32]: Add "&" as a shell
+	metacharacter for the W32 DOS shell.
+	Reported by Warren Jones <wjones@tc.fluke.com>.
+
+2000-02-02  Paul D. Smith  <psmith@gnu.org>
+
+	Fixes for the OpenVMS port from Hartmut Becker <becker@rto.dec.com>
+
+	* config.h-vms [VMS]: Define LOCALEDIR to something; needed for
+	the expansion of bindtextdomain() even though it's a no-op.
+	* vmsfunctions.c (strcmpi): Remove duplicate definition of strcmpi().
+	(readdir): Use DB() instead of testing debug_flag.
+	* dir.c (file_impossible) [VMS]: Search "p" not "name".
+	* job.c [VMS]: Switch from debug_flag to the new DB macro.  Add
+	some i18n _() macros (even though VMS doesn't yet support it).
+
+	* function.c (patsubst_expand): Change "len" to not be unsigned to
+	avoid type mismatches.
+
+	* main.c (main): Declare signame_init() if we're going to call it.
+
+2000-01-29  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* Makefile.DOS.template: Track changes in Makefile.in
+	(install-recursive, uninstall-recursive): Add missing targets.
+	(DESTDIR): Define.
+	(install-binPROGRAMS, uninstall-binPROGRAMS): Use $(DESTDIR).
+
+	* default.c (default_variables) [__MSDOS__]: Define CXX to gpp.
+
+2000-01-27  Paul D. Smith  <psmith@gnu.org>
+
+	* gettext.c: Some warning cleanups, and a fix for systems which
+	don't define HAVE_ALLOCA (the workaround code was included
+	twice).
+
+2000-01-26  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.78.90 released.
+
+2000-01-25  Paul D. Smith  <psmith@gnu.org>
+
+	Change gettext support to use the simplified version in libit 0.7.
+
+	* getopt.c, make.h: Use gettext.h instead of libintl.h.
+	* ABOUT-NLS, gettext.h, gettext.c: New files from libit 0.7.
+	Modified to remove some static declarations which aren't defined.
+	* acconfig.h: Use new gettext #defines.
+	* acinclude.m4: Add fp_WITH_GETTEXT; remove AM_GNU_GETTEXT.
+	* configure.in: Call fp_WITH_GETTEXT instead.
+	* Makefile.am: New gettext stuff.  Also force inclusion of glob
+	files for systems which have LIBC glob.
+
+	* i18n/Makefile.am, i18n/.cvsignore: New dir for translation files.
+	* i18n/de.po, i18n/es.po, i18n/fr.po, i18n/ko.po, i18n/nl.po:
+	* i18n/pl.po, i18n/ru.po: Import translations already done for
+	earlier versions of GNU make.  Thanks for that work!!
+
+	* po/Makefile.in.in, po/POTFILES.in: Removed.
+
+2000-01-23  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (decode_debug_flags): If debug_flag is set, enable all
+	debugging levels.
+	(debug_flag): Resurrect this flag variable.
+	(switches): Make -d give the old behavior of turning on all
+	debugging.  Change --debug alone to emit basic debugging and take
+	optional arguments to expand debugging.
+	* NEWS: Document the new debugging options.
+
+	* remake.c (no_rule_error): Remove this function.  This tries to
+	fix a real problem--see the description with the introduction of
+	this function below.  However, the cure is worse than the disease
+	and this approach won't work.
+	(remake_file): Put the code from no_rule_error back here.
+	(update_file_1): Remove call to no_rule_error.
+
+	* filedef.h (struct file): Remove mfile_status field.
+
+2000-01-22  Paul D. Smith  <psmith@gnu.org>
+
+	Integrate GNU gettext support.
+
+	* configure.in: Add AM_GNU_GETTEXT.
+	* Makefile.am: Add options for setting LOCALEDIR, -Iintl, etc.
+	* acinclude.m4: Add gettext autoconf macros.
+	* acconfig.h: Add new gettext #defines.
+	* make.h: Include libintl.h.  Make sure _() and N_() macros are
+	declared.  Make gettext() an empty macro is NLS is disabled.
+	* main.c (struct command_switch switches[]): Can't initialize
+	static data with _() (gettext calls), so use N_() there then use
+	gettext() directly when printing the strings.
+	* remake.c (no_rule_error): The string constants can't be static
+	when initializing _() macros.
+	* file.c (print_file): Reformat a few strings to work better for
+	translation.
+	* po/POTFILES.in, po/Makefile.in.in: New files.  Take
+	Makefile.in.in from the latest GNU tar distribution, as that
+	version works better than the one that comes with gettext.
+	* NEWS: Mention i18n ability.
+
+2000-01-21  Paul D. Smith  <psmith@gnu.org>
+
+	Installed patches for the VMS port.
+	Patches provided by: Hartmut Becker <Hartmut.Becker@compaq.com>
+
+	* readme.vms, arscan.c, config.h-vms, default.c, dir.c, file.c:
+	* implicit.c, job.c, make.h, makefile.com, makefile.vms, rule.c:
+	* variable.c, vmsdir.h, vmsfunctions.c, vmsify.c, glob/glob.c:
+	* glob/glob.h: Installed patches.  See readme.vms for details.
+
+2000-01-14  Andreas Schwab  <schwab@suse.de>
+
+	* dir.c (read_dirstream): Initialize d_type if it exists.
+
+2000-01-11  Paul D. Smith  <psmith@gnu.org>
+
+	Resolve PR/xxxx: don't automatically evaluate the $(call ...)
+	function's arguments.  While we're here, clean up argument passing
+	protocol to always use simple nul-terminated strings, instead of
+	sometimes using offset pointers to mark the end of arguments.
+	This change also fixes PR/1517.
+	Reported by Damien GIBOU <damien.gibou@st.com>.
+
+	* function.c (struct function_table_entry): Remove the negative
+	required_args hack; put in explicit min and max # of arguments.
+	(function_table): Add in the max value.  Turn off the expand bit
+	for func_call.
+	(expand_builtin_function): Test against minimum_args instead of
+	the obsolete required_args.
+	(handle_function): Rewrite this.  We don't try to be fancy and
+	pass one style of arguments to expanded functions and another
+	style to non-expanded functions: pass pointers to nul-terminated
+	strings to all functions.
+	(func_call): Rewrite this.  If we are invoking a builtin function
+	and it's supposed to have its arguments expanded, do that (since
+	it's not done by handle_function for $(call ...) anymore).  For
+	non-builtins, just add the variables as before but mark them as
+	recursive so they'll be expanded later, as needed.
+	(func_if): All arguments are vanilla nul-terminated strings:
+	remove trickery with "argv[1]-1".
+	(func_foreach): Ditto.
+
+	* expand.c (expand_argument): If the second arg is NULL, expand
+	the entire first argument.
+
+	* job.c (new_job): Zero the child struct.  This change was just
+	made to keep some heap checking software happy, not because there
+	was an actual bug (the important memory was being cleared properly).
+
+1999-12-15  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (print_variable): Print the variable with += if the
+	append flag is set.
+
+	* implicit.c (pattern_search): Remove the extra check of the
+	implicit flag added on 8/24/1998.  This causes problems and the
+	reason for the change was better resolved by the change made to
+	check_deps() on 1998-08-26.  This fixes PR/1423.
+
+1999-12-08  Paul D. Smith  <psmith@gnu.org>
+
+	* dir.c (dir_setup_glob): On 64 bit ReliantUNIX (5.44 and above)
+	in LFS mode, stat() is actually a macro for stat64().  Assignment
+	doesn't work in that case.  So, stat is a macro, make a local
+	wrapper function to invoke it.
+	(local_stat): Wrapper function, if needed.
+	Reported by Andrej Borsenkow <Andrej.Borsenkow@mow.siemens.ru>.
+
+1999-12-02  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (update_file): Move the considered test outside the
+	double-colon loop, _but_ make sure we test the double_colon target
+	not the "current" target.  If we stop early because one
+	double-colon target is running, mark all the rest considered and
+	try to start their prerequisites (so they're marked considered).
+	Fix for PR/1476 suggested by Tim Magill <tim.magill@telops.gte.com>.
+
+1999-11-22  Rob Tulloh  <rob_tulloh@dev.tivoli.com>
+
+	* function.c (windows32_openpipe, func_shell): Correct Windows32
+	problem where $(shell nosuchfile) would incorrectly exit make. The
+	fix is to print the error and let make continue.
+	Reported by David Masterson <David.Masterson@kla-tencor.com>.
+
+	* w32/subproc/misc.c (arr2envblk): Memory leak fix.
+
+1999-11-21  Paul D. Smith  <psmith@gnu.org>
+
+	Rework GNU make debugging to provide different levels of output.
+
+	* NEWS: mention it.
+	* debug.h: New file.  Define various debugging levels and macros.
+	* function.c, implicit.c, job.c, main.c, misc.c, read.c, remake.c
+	* remote-cstms.c, vmsfunctions.c: Replace all code depending on
+	debug_flag with invocations of debugging macros.
+	* make.h: Remove debug_flag and DEBUGPR, add db_level.
+
+1999-11-18  Paul Eggert  <eggert@twinsun.com>
+
+	* acinclude.m4 (AC_SYS_LARGEFILE_FLAGS): Work around a problem
+	with the QNX 4.25 shell, which doesn't propagate exit status of
+	failed commands inside shell assignments.
+
+1999-11-17  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (func_if): Find the end of the arg list by testing
+	the next item for NULL; any other test is not correct.
+	Reported by Graham Reed <grahamr@algorithmics.com> (PR/1429).
+
+	Fix += when used in a target-specific variable context.
+
+	* variable.h: New bitfield APPEND set if we have a +=
+	target-specific variable.
+
+	* variable.c (try_variable_definition): Add an argument to specify
+	if we're trying a target-specific variable.  If we are and it's an
+	append style, don't append it, record it as normal recursive, but
+	set the APPEND flag so it'll be expanded later.
+	* main.c (handle_non_switch_argument): Use new
+	try_variable_definition() signature.
+	* read.c (read_makefile,record_target_var): Ditto.
+
+	* expand.c (allocated_variable_append): New function: like
+	allocated_variable_expand(), but we expand the same variable name
+	in the context of the ``next'' variable set, then we append this
+	expanded value.
+	(recursively_expand): Invoke it, if the APPEND bit is set.
+
+1999-11-10  Paul D. Smith  <psmith@gnu.org>
+
+	* file.c (snap_deps): If the .NOTPARALLEL target is defined, turn
+	off parallel builds for this make only (still allow submakes to be
+	run in parallel).
+	* main.c: New variable, ``not_parallel''.
+	* make.h: Add an extern for it.
+	* job.c (new_job): Test NOT_PARALLEL as well as JOB_SLOTS.
+	* NEWS: Add info on .NOTPARALLEL.
+	* make.texinfo (Special Targets): Document it.
+
+	* configure.in (GLOBDIR): Set to "glob" if we need to build the
+	glob library.
+	* Makefile.am (SUBDIRS): Use the GLOBDIR variable instead of
+	"glob" so we don't try to build glob if we don't need to (if we
+	have GLIBC glob).  Reported by Lars Hecking <lhecking@nmrc.ucc.ie>.
+
+	* main.c (main): Don't put "***" in the clock skew warning
+	message.  Reported by karl@gnu.org.
+
+	* make.h: Remove unneeded signal setup.
+
+	* signame.c: Remove extraneous #includes; some versions of Ultrix
+	don't protect against multiple inclusions and it causes compile
+	errors.  Reported by Simon Burge <simonb@thistledown.com.au>.
+
+1999-10-15  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (quote_for_env): Rename from quote_as_word().
+
+	* make.h, *.c: Prefer strchr() and strrchr() in the code
+	rather than index() and rindex().  Define strchr/strrchr in terms
+	of index/rindex if the former aren't supported.
+
+	* default.c (CHECKOUT,v): Replace the fancy, complicated
+	patsubst/filter expression with a simple $(if ...) expression.
+
+	* main.c (print_usage): Add the bug reporting mailing address to
+	the --help output, as per the GNU coding standards.
+	Reported by Paul Eggert <eggert@twinsun.com>.
+
+	* README.customs: Installed information on running Customs-ized
+	GNU make and setuid root, collected by Ted Stern <stern@tera.com>.
+
+	* read.c (read_all_makefiles): PR/1394: Mark the end of the next
+	token in the MAKEFILES value string _before_ we dup it.
+
+1999-10-13  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in (make_cv_sys_gnu_glob): We used to add the -Iglob
+	flag to CPPFLAGS, but that loses if the user specifies his own
+	CPPFLAGS; this one gets added _after_ his and if he happens to
+	have an old or broken glob.h--boom.  Instead, put it in GLOBINC
+	and SUBST it.
+
+	* Makefile.am (INCLUDES): Add @GLOBINC@ to the INCLUDES macro;
+	these things get on the compile line well before the user's
+	CPPFLAGS.
+
+1999-10-12  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (notice_finished_file): If we get here and -n is set,
+	see if all the command lines are marked recursive.  If so, then we
+	ran every command there is, so check the mtime on this file just
+	like we would normally.  If not, we assume the command we didn't
+	run would updates the target and set mtime of the target to "very new".
+
+	* job.c (start_job_command): Update lines_flags in the file's cmds
+	structure with any per-line tokens we found (`@', `-', `+').
+
+1999-10-08  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (initialize_file_variables): Always recurse to
+	initialize the parent's file variables: the parent might not have
+	any rules to run so it might not have been initialized before
+	this--we need this to set up the chain properly for
+	target-specific variables.
+
+1999-09-29  Paul Eggert  <eggert@twinsun.com>
+
+	* main.c (quote_as_word): Always quote for decode_env_switches
+        instead of for the shell, so that arguments with strange
+        characters are are passed to submakes correctly.  Remove
+        double_dollars arg; we always double dollars now.  All callers
+        changed.
+        (decode_env_switches): Don't run off the end of an environment
+        variable whose contents ends in a unescaped backslash.
+
+1999-09-23  Paul D. Smith  <psmith@gnu.org>
+
+	* commands.c, function.c, job.c, read.c: Cast arguments to
+	ctype.h functions/macros to _unsigned_ char for portability.
+
+	* remake.c, function.c: Compiler warning fixes: the second
+	argument to find_next_token() should be an _unsigned_ int*.
+	Reported by Han-Wen Nienhuys <hanwen@cs.uu.nl>.
+
+1999-09-23  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.78.1 released.
+
+	* make.texinfo: Update version/date stamp.
+
+	* main.c (main): Argh.  For some reason we were closing _all_ the
+	jobserver pipes before we re-exec'd due to changed makefiles.
+	This means that any re-exec got a "jobserver unavailable" error :-/.
+	I can't believe we didn't notice this before.
+
+1999-09-22  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.78 released.
+
+	* main.c (main): Only fail on multiple --jobserver-fds options if
+	they aren't all the same.  Some makefiles use things like
+	$(MAKE) $(MFLAGS) which will cause multiple, identical copies of
+	--jobserver-fds to show up.
+
+1999-09-16  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (define_makeflags): Zero out FLAGSTRING to avoid
+	uninitialized memory reads when checking *p != '-' in the loop.
+
+1999-09-15  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.77.97 released.
+
+	* configure.in (MAKE_HOST): AC_SUBST this so it will go into the
+	makefile.
+	* Makefile.am (check-local): Print a success banner if the check
+	succeeds.
+	(check-regression): A bit of fine-tuning.
+
+1999-09-15  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* README.DOS.template: Document requirements for the test suite.
+	* Makefile.DOS.template: Updates to allow the test suite to run
+	from "make check".
+
+	* main.c (main): Handle it if argv[0] isn't an absolute path.
+
+1999-09-13  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.77.96 released.
+
+	* Makefile.am (loadavg): Use CPPFLAGS, etc. to make sure we get
+	all the right #defines to compile.
+	(check-regression): Look for the regression test suite in the make
+	package itself.  If we're building remotely, use symlinks to make
+	a local copy.
+	(dist-hook): Put the test suite into the tar file.
+
+	* configure.in: Look for perl for the test suite.
+
+1999-09-10  Paul Eggert  <eggert@twinsun.com>
+
+        * acinclude.m4 (AC_SYS_LARGEFILE_FLAGS): If on HP-UX 10.20 or
+        later, and using GCC, define __STDC_EXT__; this works around a
+        bug in GCC 2.95.1.
+
+1999-09-08  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (print_version): Ugh.  GLIBC's configure tries to check
+	make version strings and is too aggressive with their matching
+	expressions.  I've struck a deal with them to leave the version
+	output as-is for 3.78, and they'll change their configure checks
+	so that I can change this back in the future.
+
+1999-09-07  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* job.c (construct_command_argv_internal) [__MSDOS__]: Add "echo"
+	and "unset" to the list of builtin shell commands.
+
+	* configh.DOS.template (MAKE_HOST): Define to "i386-pc-msdosdjgpp"
+	which is the canonical name of the DJGPP host.
+
+1999-09-05  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.77.95 released.
+
+	* make.texinfo (Make Errors): Document some new jobserver error
+	messages.
+
+1999-09-04  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* make.texinfo (Make Errors): Document the hint about 8 spaces
+	instead of a TAB.
+	(Call Function, Quick Reference): Use @code{$(1)}, not @var.
+
+	* main.c (main) [__MSDOS__]: Say "on this platform" instead of "on
+	MS-DOS", since the MSDOS version could run on Windows.
+
+1999-09-03  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (notice_finished_file): Always set mtime_before_update
+	if it's not been set, not just if we ran some rules.  Otherwise we
+	may have a situation where a target's prerequisite was rebuilt but
+	not changed, so this target's rules weren't run, then
+	update_goal_chain() sees mtime_before_update != last_mtime and
+	thinks that the top-level target changed when it really didn't.
+	This can cause an infinite loop when remaking makefiles.
+	(update_goal_chain): If we get back to the top and we don't know
+	what the goal's last_mtime was, find it now.  We need to know so
+	we can compare it to mtime_before_update later (this is only
+	crucial when remaking makefiles--should we only do it then?)
+
+1999-09-02  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (read_makefile): If "override" appears as the first
+	prerequisite, look further to ensure this is really a
+	target-specific variable definition, and not just some
+	prerequisite named "override".
+
+1999-09-01  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (IS_PATHSEP) [WINDOWS32]: Allow backslash separators
+	for W32 platforms.
+	* read.c (record_files) [WINDOWS32]: Allow backslash separators
+	for W32 platforms.
+	* implicit.c (pattern_search) [WINDOWS32]: Allow backslash
+	separators for W32 platforms.
+
+	* configure.in (MAKE_HOST): Define it to be the canonical build
+	host info, now that we need AC_CANONICAL_HOST anyway (for large
+	file support).
+	* version.c (make_host): Define a variable to MAKE_HOST so we're
+	sure to get it from the local config.h.
+	* main.c (print_version): Use it in the version information.
+	* config.ami.template: Add MAKE_HOST.
+	* configh.dos.template: Ditto.
+	* config.h.W32.template: Ditto.
+	* config.h-vms.template: Ditto.
+
+	* main.c (main): Close the jobserver file descriptors if we need
+	to re-exec ourselves.
+	Also print more reasonable error if users force -jN for submakes.
+	This may be common for a while until people use the jobserver
+	feature.  If it happens, we ignore the existing jobserver stuff
+	and use whatever they specified on the commandline.
+	(define_makeflags): Fixed a long-standing bug: if a long name
+	only option comes immediately after a single letter option with no
+	argument, then the option string is constructed incorrectly.  For
+	example, with -w and --jobserver-fds you get "-w-jobserver-fds..."
+	instead of "-w --jobserver-fds..."; add in an extra " -".
+
+	* make.texinfo (Phony Targets): Add another example of using
+	.PHONY with subdirectories/recursive make.
+
+1999-08-30  Paul D. Smith  <psmith@gnu.org>
+
+	* README.W32.template: Renamed from README.W32 so it's
+	autogenerated during the dist.  A few minor modifications.
+
+	* configure.in: Check for kstat_open before AC_FUNC_GETLOADAVG
+	since the latter needs to know whether the former exists to give
+	an accurate result.
+
+1999-08-26  Rob Tulloh  <rob_tulloh@dev.tivoli.com>
+
+	* NMakefile [WINDOWS32]: Now more robust. If you change a file
+	under w32/subproc, the make.exe will be relinked. Also added some
+	tests to make sure erase commands won't fail when executed in a
+	pristine build environment.
+
+	* w32/subproc/sub_proc.c [WINDOWS32]: Added support for
+	HAVE_CYGWIN_SHELL. If you are using the Cygwin B20.1 release, it
+	is now possible to have have native support for this shell without
+	having to rely on klutzy BATCH_MODE_ONLY_SHELL.
+
+	* config.h.W32 [WINDOWS32]: Added HAVE_CYGWIN_SHELL macro which
+	users can define if they want to build make to use this shell.
+
+	* README.W32 [WINDOWS32]: Added informaton about
+	HAVE_CYGWIN_SHELL. Cleaned up text a bit to make it more current.
+
+1999-08-26  Paul Eggert  <eggert@twinsun.com>
+
+	Support large files in AIX, HP-UX, and IRIX.
+
+	* acinclude.m4 (AC_LFS): Remove.  Superseded by AC_SYS_LARGEFILE.
+	(AC_SYS_LARGEFILE_FLAGS, AC_SYS_LARGEFILE_SPACE_APPEND,
+	AC_SYS_LARGEFILE_MACRO_VALUE, AC_SYS_LARGEFILE): New macros.
+	(jm_AC_TYPE_UINTMAX_T): Check for busted compilers that can't
+	shift or divide unsigned long long.
+	(AM_PROG_CC_STDC): New macro; a temporary workaround of a bug in
+	automake 1.4.
+
+	* configure.in (AC_CANONICAL_HOST): Add; required by new
+	AC_SYS_LARGEFILE.
+	(AC_SYS_LARGEFILE): Renamed from AC_LFS.
+	(AM_PROG_CC_STDC): Add.
+
+	* config.guess, config.sub: New files, needed for AC_CANONICAL_HOST.
+
+1999-08-25  Paul Eggert  <eggert@twinsun.com>
+
+	* make.h (CHAR_MAX): New macro.
+	* main.c (struct command_switch): c is now int,
+	so that it can store values greater than CHAR_MAX.
+	(switches): Replace small numbers N with CHAR_MAX+N-1,
+	to avoid problems with non-ASCII character sets.
+	(short_option): New macro.
+	(init_switches, print_usage, define_makeflags): Use it instead of
+	isalnum.
+
+1999-08-25  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.77.94 released.
+
+	* main.c (main) [__MSDOS__]: If the user uses -j, warn that it's
+	not supported and reset it.
+
+	* make.h (ISDIGIT): Obtained this from the textutils distribution.
+	* main.c (decode_switches): Use it.
+	* function.c (is_numeric): Use it.
+
+	* main.c (struct command_switch): Store the switch char in an
+	unsigned char to shut up GCC about using it with ctype.h macros.
+	Besides, it _is_ always unsigned.
+
+1999-08-24  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo: Change "dependency" to "prerequisite" and
+	"dependencies" to "prerequisites".  Various other cleanups related
+	to the terminology change.
+	* file.c: Change debugging and error messages to use
+	"prerequisite" instead of "dependency".
+	* implicit.c: Ditto.
+	* remake.c: Ditto.
+	* NEWS: Document it.
+
+1999-08-23  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (update_file): Move the considered check into the
+	double-colon rule loop, so we consider double-colon rules
+	individually (otherwise after the first is pruned, the rest won't
+	get run).
+
+	* README.template: Minor changes.
+
+	Remove the debugging features of the jobserver, so it no longer
+	writes distinct tokens to the pipe.  Thus, we don't need to store
+	the token we get.  A side effect of this is to remove a potential
+	"unavailable token" situation: make-1 invokes make-2 with its
+	special token and make-3 with a normal token; make-2 completes.
+	Now we're waiting for make-3 but using 2 tokens; our special token
+	is idle.  In the new version we don't have special tokens per se,
+	we merely decide if we already have a child or not.  If we don't,
+	we don't need a token.  If we do, we have to get one to run the
+	next child.  Similar for putting tokens back: if we're cleaning up
+	the last child, we don't put a token back.  Otherwise, we do.
+
+	* main.c: Add a new, internal flag --jobserver-fds instead of
+	overloading the meaning of -j.  Remove job_slots_str and add the
+	stringlist jobserver_fds.
+	(struct command_switch): We don't need the int_string type.
+	(switches[]): Add a new option for --jobserver-fds and remove
+	conditions around -j.  Make the description for the former 0 so it
+	doesn't print during "make --help".
+	(main): Rework jobserver parsing.  If we got --jobserver-fds
+	make sure it's valid.  We only get one and job_slots must be 0.
+	If we're the toplevel make (-jN without --jobserver-fds) create
+	the pipe and write generic tokens.
+	Create the stringlist struct for the submakes.
+	Clean up the stringlist where necessary.
+	(init_switches): Remove int_string handling.
+	(print_usage): Don't print internal flags (description ptr is 0).
+	(decode_switches): Remove int_string handling.
+	(define_makeflags): Remove int_string handling.
+
+	* job.c: Remove my_job_token flag and all references to the
+	child->job_token field.
+	(free_job_token): Remove this and merge it into free_child().
+	(reap_children): Rework the "reaped a child" logic slightly.
+	Don't call defunct free_job_token anymore.  Always call
+	free_child, even if we're dying.
+	(free_child): If we're not freeing the only child, put a token
+	back in the pipe.  Then, if we're dying, don't bother to free.
+	(new_job): If we are using the jobserver, loop checking to see if
+	a) there are no children or b) we get a token from the pipe.
+
+	* job.h (struct child): Remove the job_token field.
+
+1999-08-20  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (try_variable_definition): Allocate for variable
+	expansion in f_append with a simple variable: if we're looking at
+	target-specific variables we don't want to trash the buffer.
+	Noticed by Reiner Beninga <Reiner.Beninga@mchp.siemens.de>.
+
+1999-08-16  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* main.c (main) [__MSDOS__]: Mirror any backslashes in argv[0], to
+	avoid problems in shell commands that use backslashes as escape
+	characters.
+
+1999-08-16  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.77.93 released.
+
+1999-08-13  Paul D. Smith  <psmith@gnu.org
+
+	* function.c (func_if): New function $(if ...) based on the
+	original by Han-Wen but reworked quite a bit.
+	(function_table): Add it.
+	* NEWS: Introduce it.
+	* make.texinfo (If Function): Document it.
+
+	* job.c (free_job_token): Check for EINTR when writing tokens to
+	the jobserver pipe.
+
+1999-08-12  Paul D. Smith  <psmith@gnu.org>
+
+	Another jobserver algorithm change.  We conveniently forgot that
+	the blocking bit is shared by all users of the pipe, it's not a
+	per-process setting.  Since we have many make processes all
+	sharing the pipe we can't use the blocking bit as a signal handler
+	flag.  Instead, we'll dup the pipe's read FD and have the SIGCHLD
+	handler close the dup'd FD.  This will cause the read() to fail
+	with EBADF the next time we invoke it, so we know we need to reap
+	children.  We then re-dup and reap.
+
+	* main.c (main): Define the job_rfd variable to hold the dup'd FD.
+	Actually dup the read side of the pipe.  Don't bother setting the
+	blocking bit on the file descriptor.
+	* make.h: Declare the job_rfd variable.
+	* job.c (child_handler): If the dup'd jobserver pipe is open,
+	close it and assign -1 to job_rfd to notify the main program that
+	we got a SIGCHLD.
+	(start_job_command): Close the dup'd FD before exec'ing children.
+	Since we open and close this thing so often it doesn't seem
+	worth it to use the close-on-exec bit.
+	(new_job): Remove code for testing/setting the blocking bit.
+	Instead of EAGAIN, test for EBADF.  If the dup'd FD has been
+	closed, re-dup it before we reap children.
+
+	* function.c (func_shell): Be a little more accurate about the
+	length of the error string to allocate.
+
+	* expand.c (variable_expand_for_file): If there's no filenm info
+	(say, from a builtin command) then reset reading_file to 0.
+
+1999-08-09  Paul D. Smith  <psmith@gnu.org>
+
+	* maintMakefile: Use g in sed (s///g) to replace >1 variable per
+	line.
+
+	* Makefile.DOS.template [__MSDOS__]: Fix mostlyclean-aminfo to
+	remove the right files.
+
+1999-08-01  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* function.c (msdos_openpipe) [__MSDOS__]: *Really* return a FILE
+	ptr.
+
+1999-08-01  Paul D. Smith  <psmith@gnu.org>
+
+	New jobserver algorithm to avoid a possible hole where we could
+	miss SIGCHLDs and get into a deadlock.  The original algorithm was
+	suggested by Roland McGrath with a nice refinement by Paul Eggert.
+	Many thanks as well to Tim Magill and Howard Chu, who also
+	provided many viable ideas and critiques.  We all had a fun week
+	dreaming up interesting ways to use and abuse UNIX syscalls :).
+
+	Previously we could miss a SIGCHLD if it happened after we reaped
+	the children but before we re-entered the blocking read.  If this
+	happened to all makes and/or all children, make would never wake
+	up.
+
+	We avoid this by having the SIGCHLD handler reset the blocking bit
+	on the jobserver pipe read FD (normally read does block in this
+	algorithm).  Now if the handler is called between the time we reap
+	and the time we read(), and there are no tokens available, the
+	read will merely return with EAGAIN instead of blocking.
+
+	* main.c (main): Set the blocking bit explicitly here.
+	* job.c (child_handler): If we have a jobserver pipe, set the
+	non-blocking bit for it.
+	(start_waiting_job): Move the token stuff back to new_job; if we
+	do it here then we're not controlling the number of remote jobs
+	started!
+	(new_job): Move the check for job slots to _after_ we've created a
+	child structure.  If the read returns without getting a token, set
+	the blocking bit then try to reap_children.
+
+	* make.h (EINTR_SET): Define to test errno if EINTR is available,
+	or 0 otherwise.  Just some code cleanup.
+	* arscan.c (ar_member_touch): Use it.
+	* function.c (func_shell): Use it.
+	* job.c (reap_children): Use it.
+	* remake.c (touch_file): Use it.
+
+1999-07-28  Paul D. Smith  <psmith@gnu.org>
+
+	* make.h: Define _() and N_() macros as passthrough to initiate
+	NLS support.
+	* <all>: Add _()/N_() around translatable strings.
+
+1999-07-27  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c: Make sure make.h comes before other headers.
+
+1999-07-26  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo (Quick Reference): Update with the new features.
+
+1999-07-25  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* remake.c [__MSDOS__]: Don't include variables.h, it's already
+	included.
+
+	* function.c (msdos_openpipe) [__MSDOS__]: Return FILE ptr.
+	(func_shell) [__MSDOS__]: Fix the argument list.
+
+	* Makefile.DOS.template: Update from Makefile.in.
+
+	* README.DOS.template: Configure command fixed.
+
+	* configh.dos.template: Update to provide definitions for
+	uintmax_t, fd_set_size_t, and HAVE_SELECT.
+
+1999-07-24  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.77.91 released.
+
+	* configure.in: Changes to the boostrapping code: if build.sh.in
+	doesn't exist configure spits an error and generates an empty
+	build.sh file which causes make to be confused.
+	* maintMakefile: Don't build README early.
+
+1999-07-23  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (my_job_token): This variable controls whether we've
+	handed our personal token to a subprocess or not.  Note we could
+	probably infer this from the value of job_slots_used, but it's
+	clearer to just keep it separately.  Job_slots_used isn't really
+	relevant when running the job server.
+	(free_job_token): New function: free a job token.  If we don't
+	have one, no-op.  If we have the personal token, reclaim it.  If
+	we have another token, write it back to the pipe.
+	(reap_children): Call free_job_token.
+	(free_child): Call free_job_token.
+	(start_job_command): Remove duplicate test for '+' in the command.
+	If we don't appear to be running a recursive make, close the
+	jobserver filedescriptors.
+	(start_waiting_job): If our personal token is available, use that
+	instead of going to the server pipe.
+	(*): Add the token value to many debugging statements, and print
+	the child target name in addition to the ptr hex value.
+	Change the default "no token" value from '\0' to '-' so it looks
+	better in the output.
+
+	* main.c (main): Install the child_handler with sigaction()
+	instead of signal() if we have it.  On SysV systems, signal() uses
+	SysV semantics which are a pain.  But sigaction() always does what
+	we want.
+	(main): If we got job server FDs from the environment, test them
+	to see if they're open.  If not, the parent make closed them
+	because it didn't think we were a submake.  Print a warning and
+	suggestion to use "+" on the submake invocation, and hard-set to
+	-j1 for this instance of make.
+	(main): Change the algorithm for assigning slots to be more
+	robust.  Previously make checked to see if it thought a subprocess
+	was a submake and if so, didn't give it a token.  Since make's
+	don't consume tokens we could spawn many of makes fighting for a
+	small number of tokens.  Plus this is unreliable because submakes
+	might not be recognized by the parent (see above) then all the
+	tokens could be used up by unrecognized makes, and no one could
+	run.  Now every make consumes a token from its parent.  However,
+	the make can also use this token to spawn a child.  If the make
+	wants more than one, it goes to the jobserver pipe.  Thus there
+	will never be more than N makes running for -jN, and N*2 processes
+	(N makes and their N children).  Every make can always run at
+	least one job, and we'll never deadlock.  (Note the closing of the
+	pipe for non-submakes also solves this, but this is still a better
+	algorithm.)  So!  Only put N-1 tokens into the pipe, since the
+	topmost make keeps one for itself.
+
+	* configure.in: Find sigaction.  Disable job server support unless
+	the system provides it, in addition to either waitpid() or
+	wait3().
+
+1999-07-22  Rob Tulloh  <rob_tulloh@dev.tivoli.com>
+
+	* arscan.c (ar_member_touch) [WINDOWS32]: The ar_date field is a
+	string on Windows, not a timestamp.
+
+1999-07-21  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.77.90 released.
+
+	* Makefile.am (AUTOMAKE_OPTIONS): Require automake 1.4.
+
+	* function.c: Rearrange so we don't need to predeclare the
+	function_table array; K&R C compilers don't like that.
+
+	* acinclude.m4 (AC_FUNC_SELECT): Ouch; this requires an ANSI C
+	compiler!  Change to work with K&R compilers as well.
+
+	* configure.in (AC_OUTPUT): Put build.sh back.  I don't know how I
+	thought it would work this way :-/.  We'll have to think of
+	something else.
+	* Makefile.am: Remove rule to create build.sh.
+
+	* default.c (default_suffix_rules): Rearrange the default command
+	lines to conform to POSIX rules (put the filename argument $<
+	_after_ the OUTPUT_OPTION, not before it).
+
+	* various: Changed !strncmp() calls to strneq() macros.
+
+	* misc.c (sindex): Make slightly more efficient.
+
+	* dir.c (file_impossible): Change savestring(X,strlen(X)) to xstrdup().
+	* implicit.c (pattern_search): Ditto.
+	* main.c (enter_command_line_file): Ditto.
+	(main): Ditto.
+	* misc.c (copy_dep_chain): Ditto.
+	* read.c (read_makefile): Ditto.
+	(parse_file_seq): Ditto.
+	(tilde_expand): Ditto.
+	(multi_glob): Ditto.
+	* rule.c (install_pattern_rule): Ditto.
+	* variable.c (define_variable_in_set): Ditto.
+	(define_automatic_variables): Ditto.
+	* vpath.c (construct_vpath_list): Ditto.
+
+	* misc.c (xrealloc): Some reallocs are non-standard: work around
+	them in xrealloc by calling malloc if PTR is NULL.
+	* main.c (main): Call xrealloc() directly instead of testing for
+	NULL.
+
+	* function.c (func_sort): Don't try to free NULL; some older,
+	non-standard versions of free() don't like it.
+
+	* configure.in (--enable-dmalloc): Install some support for using
+	dmalloc (http://www.dmalloc.com/) with make.  Use --enable-dmalloc
+	with configure to enable it.
+
+	* function.c (function_table_entry): Whoops!  The function.c
+	rewrite breaks backward compatibility: all text to a function is
+	broken into arguments, and extras are ignored.  So $(sort a,b,c)
+	returns "a"!  Etc.  Ouch.  Fix it by making a positive value in
+	the REQUIRED_ARGS field mean exactly that many arguments to the
+	function; any "extras" are considered part of the last argument as
+	before.  A negative value means at least that many, but may be
+	more: in this case all text is broken on commas.
+	(handle_function): Stop when we've seen REQUIRED_ARGS args, if >0.
+	(expand_builtin_function): Compare number of args to the absolute
+	value of REQUIRED_ARGS.
+
+1999-07-20  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (start_job_command): Ensure that the state of the target
+	is cs_running.  It might not be if we skipped all the lines due to
+	-n (for example).
+
+	* commands.c (execute_file_commands): If we discover that the
+	command script is empty and succeed early, set cs_running so the
+	modtime of the target is still rechecked.
+
+	* rule.c (freerule): Free the dependency list for the rule.
+
+	* implicit.c (pattern_search): When turning an intermediate file
+	into a real target, keep the also_make list.
+	Free the dep->name if we didn't use it during enter_file().
+
+1999-07-16  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (read_makefile): Don't allocate the commands buffer until
+	we're sure we found a makefile and won't return early (mem leak).
+
+	* job.c (start_job_command): Broken #ifdef test: look for F_SETFD,
+	not FD_SETFD.  Close-on-exec isn't getting set on the bad_stdin
+	file descriptor and it's leaking :-/.
+	* getloadavg.c (getloadavg): Ditto.
+
+1999-07-15  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (read_makefile): Fix some potential memory stomps parsing
+	`define' directives where no variable name is given.
+
+	* function.c (func_call): Rename from func_apply.  Various code
+	cleanup and tightening.
+	(function_table): Add "call" as a valid builtin function.
+
+	* make.texinfo (Call Function): Document it.
+
+	* NEWS: Announce it.
+
+1999-07-09  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* variable.c (try_variable_definition) [__MSDOS__, WINDOWS32]:
+	Treat "override SHELL=" the same as just "SHELL=".
+
+1999-07-09  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (start_waiting_job): Don't get a second job token if we
+	already have one; if we're waiting on the load to go down
+	start_waiting_job() might get called twice on the same file.
+
+	* filedef.h (struct file): Add new field, mtime_before_update.
+	When notice_finished_file runs it assigns the cached last_mtime to
+	this field.
+	* remake.c (update_goal_chain): Notice that a file wasn't updated
+	by asking if it changed (g->changed) and comparing the current
+	cached time (last_mtime) with the previous one, stored in
+	mtime_before_update.  The previous check ("did last_mtime changed
+	during the run of update_file?") fails for parallel builds because
+	last_mtime is set during reap_children, before update_file is run.
+	This causes update_goal_chain to always return -1 (nothing
+	rebuilt) when running parallel (-jN).  This is OK during "normal"
+	builds since our caller (main) treats these cases identically in
+	that case, but if when rebuilding makefiles the difference is very
+	important, as it controls whether we re-exec or not.
+	* file.c (file_hash_enter): Copy the mtime_before_update field.
+	(snap_deps): Initialize mtime_before_update to -1.
+	* main.c (main): Initialize mtime_before_update on old (-o) and
+	new (-W) files.
+
+1999-07-08  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (switches): Define a new switch -R (or
+	--no-builtin-variables).  This option disables the defining of all
+	the GNU make builtin variables.
+	(main): If -R was given, force -r as well.
+	* default.c (define_default_variables): Test the new flag.
+	* make.h: Declare global flag.
+	* make.texinfo (Options Summary): Document the new option.
+	(Implicit Variables): Ditto.
+
+1999-07-06  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo (Options Summary): Correct examples in
+	--print-data-base option summary (problem reported by David Morse
+	<morse@nichimen.com>).
+
+	* arscan.c: Add support for archives in Windows (VC++).  Frank
+	Libbrecht <frankl@abzx.belgium.hp.com> provided info on how to do
+	this.
+	* NMakefile.template (CFLAGS_any): Remove NO_ARCHIVES from the
+	compile line.
+	* build_w32.bat: Ditto.
+
+	* remake.c (no_rule_error): Fix -include/sinclude so it doesn't
+	give errors if you try to -include the same file twice.
+	(updating_makefiles): New variable: we need to know this info in
+	no_rule_error() so we know whether to print an error or not.
+	(update_file_1): Unconditionally call no_rule_error(), don't try
+	to play games with the dontcare flag.
+
+1999-06-14  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo (Remaking Makefiles): Add a description of how to
+	prevent implicit rule searches for makefiles.
+
+	* make.1: Remove statement that make continues processing when -v
+	is given.
+
+1999-06-14  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (read_makefile): Cast -1 arguments to
+	variable_expand_string() to long.  Alexandre Sauve
+	<Alexandre.SAUVE@ifp.fr> reports that without casts, this breaks
+	on a NEC SUPER-UX SX-4 system (and it's wrong without a cast
+	anyway).  Of course, (a) I'd really love to start using function
+	prototypes, and (b) there's a whole slew of issues related to int
+	vs. long and signed vs. unsigned in the length handling of
+	variable buffers, etc.  Gross.  Needs a complete mucking-out.
+	* expand.c (variable_expand): Ditto.
+
+	* acinclude.m4 (AC_FUNC_SELECT): Slight enhancement for AIX 3.2 by
+	Lars Hecking <lhecking@nmrc.ucc.ie>.
+
+	* read.c (get_next_mword): Allow colons to be escaped in target
+	names: fix for regression failure.
+
+1999-04-26  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main): Reset read_makefiles to empty after processing so
+	we get the right error message.
+
+1999-04-25  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo: Updates to @dircategory and @direntry suggested by
+	Karl Berry <karl@cs.umb.edu>.
+
+1999-04-23  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* job.c (start_job_command) [__MSDOS__]: Call unblock_sigs before
+	turning off dos_command_running, so child's signals produce the
+	right effect.
+
+	* commands.c (fatal_error_signal) [__MSDOS__]: Use EXIT_FAILURE
+	instead of 1.
+
+1999-04-18  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* configh.dos.template: Update to recognize that version 2.02 of
+	DJGPP contains sys_siglist stuff.
+
+1999-04-14  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo (Options/Recursion): Document the job server.
+	(Parallel): Tweaks.
+
+1999-04-13  Paul D. Smith  <psmith@gnu.org>
+
+	Implement a new "job server" feature; the implementation was
+	suggested by Howard Chu <hyc@highlandsun.com>.
+
+	* configure.in (job-server): New disable option for job server
+	support--it's enabled by default.  If it works well this will go
+	away.
+
+	* NEWS: Summarize the new feature.
+
+	* acconfig.h: New definition MAKE_JOBSERVER if job server support
+	is enabled.
+	* config.h-vms.template: Undef MAKE_JOBSERVER for this port.
+	* config.h.W32.template: Ditto.
+	* config.ami.template: Ditto.
+
+	* main.c (struct command_switch): Add a new type: int_string.
+	(switches[]) Use int_string for -j if MAKE_JOBSERVER.
+	(init_switches): Initialize the new int_string switch type.
+	(print_usage): New function, extracted from decode_switches().
+	(decode_switches): Call it.  Decode the new int_string switch type.
+	(define_makeflags): Add new int_string switch data to MAKEFLAGS.
+	(job_fds[]) Array to contain the pipe file descriptors.
+	(main): Parse the job_slots_str option results.  If necessary,
+	create the pipe and seed it with tokens.  Set the non-blocking bit
+	for the read fd.  Enable the signal handler for SIGCHLD even if we
+	have a non-hanging wait; it's needed to interrupt the select() in
+	job.c:start_waiting_job().
+
+	* make.h: Declare job_fds[].
+
+	* job.h (struct child): Add job_token field to store the token for
+	this job (if any).
+
+	* job.c (reap_children): When a child is fully reaped, release the
+	token back into the pipe.
+	(free_child): If the child to be freed still has a token, put it
+	back.
+	(new_job): Initialize the job_token member.
+	(start_waiting_job): For local jobs, if we're using the pipe, get
+	a token before we check the load, etc.  We do this by performing a
+	non-blocking read in a loop.  If the read fails, no token is
+	available.  Do a select on the fd to wait for a token.  We need to
+	re-enable the signal handler for SIGCHLD even if we have a
+	non-hanging waitpid() or wait3(), so that the signal will
+	interrupt the select() and we can wake up to reap children.
+	(child_handler): Re-enable the signal handler.  The count is still
+	kept although it's not needed or used unless you don't have
+	waitpid() or wait3().
+
+1999-04-10  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main): Reset the considered bit on all the makefiles if
+	something failed to update; we need to examine them again if they
+	appear as normal targets in order to get the proper error message.
+
+1999-04-09  Paul D. Smith  <psmith@gnu.org>
+
+	Performance enhancement from Tim Magill <tim.magill@telops.gte.com>.
+
+	* remake.c (update_file): If you have large numbers of
+	dependencies and you run in parallel, make can spend considerable
+	time each pass through the graph looking at branches it has
+	already seen.  Since we only reap_children() when starting a pass,
+	not in the middle, if a branch has been seen already in that pass
+	nothing interesting can happen until the next pass.  So, we toggle
+	a bit saying whether we've seen this target in this pass or not.
+	(update_goal_chain): Initially set the global considered toggle to
+	1, since all targets initialize their boolean to 0.  At the end of
+	each pass, toggle the global considered variable.
+	* filedef.h (struct file): Per-file considered toggle bit.
+	* file.c: New global toggle variable considered.
+
+1999-04-05  Paul D. Smith  <psmith@gnu.org>
+
+	* arscan.c (ar_scan): Added support for ARFZMAG (compressed
+	archives?) for Digital UNIX C++.  Information provided by
+	Patrick	E. Krogel <pekrogel@mtu.edu>.
+	(ar_member_touch): Ditto.
+
+1999-04-03  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (f_mtime): If: a) we found a file and b) we didn't
+	create it and c) it's not marked as an implicit target and d) it
+	is marked as an intermediate target, then it was so marked due to
+	an .INTERMEDIATE special target, but it already existed in the
+	directory.  In this case, unset the intermediate flag so we won't
+	delete it when make is done.  It feels like it would be cleaner to
+	put this check in update_file_1() but I worry it'll get missed...
+
+1999-04-01  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (construct_command_argv_internal): Use bcopy() to copy
+	overlapping strings, rather than strcpy().  ISO C says the latter
+	is undefined.  Found this in a bug report from 1996!  Ouch!
+
+1999-03-31  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (readline): Ignore carriage returns at the end of the
+	line, to allow Windows-y CRLF line terminators.
+
+1999-03-30  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Don't put build.sh here, since build.sh.in doesn't
+	exist initially.  This cause autoreconf and automake to fail when
+	run on a clean CVS checkout.  Instead, we create build.sh in the
+	Makefile (see below).
+
+	* Makefile.am: Remove BUILT_SOURCES; this is no longer relevant.
+	Put those files directly into EXTRA_DIST so they're distributed.
+	Create a local build rule to create build.sh.
+	Create a local maintainer-clean rule to delete all the funky
+	maintainers files.
+
+	* maintMakefile: Makefile.in depends on README, since automake
+	fails if it doesn't exist.  Also don't remove glob/Makefile.in
+	here, as it causes problems.
+
+1999-03-26  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Substitute GLOBLIB if we need the link the
+	glob/libglob.a library.
+	* Makefile.am (make_LDADD): Use the subst variable GLOBLIB so we
+	don't link the local libglob.a at all if we don't need it.
+	* build.template: Don't compile glob/*.o unless we want globlib.
+	* maintMakefile (build.sh.in): Substitute the glob/*.o files
+	separately.
+
+1999-03-25  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo: Various typos and additions, pointed out by James
+	G. Sack <jsack@dornfeld.com>.
+
+1999-03-22  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo (Functions): Add a new section documenting the new
+	$(error ...) and $(warning ...) functions.  Also updated copyright
+	dates.
+	* NEWS: Updated for the new functions.
+	* function.c (func_error): Implement the new $(error ...) and
+	$(warning ...) functions.
+	(function_table): Insert new functions into the table.
+	(func_firstword): Don't call find_next_token() with argv[0]
+	itself, since that function modifies the pointer.
+	* function.c: Cleanups and slight changes to the new method of
+	calling functions.
+
+1999-03-20  Han-Wen Nienhuys  <hanwen@cs.uu.nl>
+
+	* function.c: Rewrite to use one C function per make function,
+	instead of a huge switch statement.  Also allows some cleanup of
+	multi-architecture issues, and a cleaner API which makes things
+	like func_apply() simple.
+
+	* function.c (func_apply): Initial implementation.  Expand either
+	a builtin function or a make variable in the context of some
+	arguments, provided as $1, $2, ... $N.
+
+1999-03-19  Eli Zaretskii  <eliz@is.elta.co.il>
+1999-03-19  Rob Tulloh  <rob_tulloh@dev.tivoli.com>
+
+	* job.c (construct_command_argv_internal): Don't treat _all_
+	backslashes as escapes, only those which really escape a special
+	character.  This allows most normal "\" directory separators to be
+	treated normally.
+
+1999-03-05  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Check for a system strdup().
+	* misc.c (xstrdup): Created.  Suggestion by Han-Wen Nienhuys
+	<hanwen@cs.uu.nl>.
+	* make.h: Prototype xstrdup().
+	* remake.c (library_search): Use it.
+	* main.c (main): Use it.
+	(find_and_set_default_shell): Use it.
+	* job.c (construct_command_argv_internal): Use it.
+	* dir.c (find_directory): Use it.
+
+	* Makefile.am, configure.in: Use AC_SUBST_FILE to insert the
+	maintMakefile instead of "include", to avoid automake 1.4
+	incompatibility.
+
+1999-03-04  Paul D. Smith  <psmith@gnu.org>
+
+	* amiga.c, amiga.h, ar.c, arscan.c, commands.c, commands.h,
+	* default.c, dep.h, dir.c, expand.c, file.c, filedef.h, function.c,
+	* implicit.c, job.c, job.h, main.c, make.h, misc.c, read.c, remake.c
+	* remote-cstms.c, remote-stub.c, rule.h, variable.c, variable.h,
+	* vpath.c, Makefile.ami, NMakefile.template, build.template,
+	* makefile.vms: Updated FSF address in the copyright notice.
+
+	* variable.c (try_variable_definition): If we see a conditional
+	variable and we decide to set it, re-type it as recursive so it
+	will be expanded properly later.
+
+1999-02-22  Paul D. Smith  <psmith@gnu.org>
+
+	* NEWS: Mention new .LIBPATTERNS feature.
+
+	* make.texinfo (Libraries/Search): Describe the use and
+	ramifications of the new .LIBPATTERNS variable.
+
+	* remake.c (library_search): Instead of searching only for the
+	hardcoded expansion "libX.a" for a library reference "-lX", we
+	obtain a list of patterns from the .LIBPATTERNS variable and
+	search those in order.
+
+	* default.c: Added a new default variable .LIBPATTERNS.  The
+	default for UNIX is "lib%.so lib%.a".  Amiga and DOS values are
+	also provided.
+
+	* read.c: Remove bogus HAVE_GLOB_H references; always include
+	vanilla glob.h.
+
+1999-02-21  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (expand_function): Set value to 0 to avoid freeing it.
+	* variable.c (pop_variable_scope): Free the value of the variable.
+	(try_variable_definition): For simple variables, use
+	allocated_variable_expand() to avoid stomping on the variable
+	buffer when we still need it for other things.
+
+	* arscan.c: Modified to support AIX 4.3 big archives.  The changes
+	are based on information provided by Phil Adams
+	<padams@austin.ibm.com>.
+
+1999-02-19  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Check to see if the GNU glob library is already
+	installed on the system.  If so, _don't_ add -I./glob to the
+	compile line.  Using the system glob code with the local headers
+	is very bad mojo!
+	Rewrite SCCS macros to use more autoconf facilities.
+
+	* Makefile.am: Move -Iglob out of INCLUDES; it'll get added to
+	CPPFLAGS by configure now.
+	Automake 1.4 introduced its own "include" feature which conflicts
+	with the maintMakefile stuff.  A hack that seems to work is add a
+	space before the include :-/.
+
+	* build.template: Move -Iglob out of the compile line; it'll get
+	added to CPPFLAGS by configure now.
+
+1999-02-16  Glenn D. Wolf  <Glenn_Wolf@email.sps.mot.com>
+
+	* arscan.c (ar_scan) [VMS]: Initialized VMS_member_date before
+	calling lbr$get_index since if the archive is empty,
+	VMS_get_member_info won't get called at all, and any leftover date
+	will be used.  This bug shows up if any member of any archive is
+	made, followed by a dependency check on a different, empty
+	archive.
+
+1998-12-13  Martin Zinser  <zinser@decus.decus.de>
+
+	* config.h-vms [VMS]: Set _POSIX_C_SOURCE.  Redefine the getopt
+	functions so we don't use the broken VMS versions.
+	* makefile.com [VMS]: Allow debugging.
+	* dir.c (dir_setup_glob) [VMS]: Don't extern stat() on VMS.
+
+1998-11-30  Paul D. Smith  <psmith@gnu.org>
+
+	* signame.c (init_sig): Check the sizes of signals being set up to
+	avoid array overwrites (if the system headers have problems).
+
+1998-11-17  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (record_files): Clean up some indentation.
+
+1998-11-08  Han-Wen Nienhuys  <hanwen@cs.uu.nl>
+
+	* rule.c (print_rule_data_base): Fix arguments to fatal() call.
+
+1998-10-13  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (start_job_command): If the command list resolves to no
+	chars at all (e.g.: "foo:;$(empty)") then command_ptr is NULL;
+	quit early.
+
+1998-10-12  Andreas Schwab  <schwab@issan.cs.uni-dortmund.de>
+
+	* rule.c (print_rule_data_base): Ignore num_pattern_rules if it is
+	zero.
+
+1998-10-09  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (read_makefile): Allow non-empty lines to expand to the
+	empty string after variable, etc., expansion, and be ignored.
+
+1998-09-21  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (construct_command_argv_internal): Only add COMMAND.COM
+	"@echo off" line for non-UNIXy shells.
+
+1998-09-09  Paul D. Smith  <psmith@gnu.org>
+
+	* w32/subproc/sub_proc.c: Add in missing HAVE_MKS_SHELL tests.
+
+1998-09-04  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (read_makefile): If we hit the "missing separator" error,
+	check for the common case of 8 spaces instead of a TAB and give an
+	extra comment to help people out.
+
+1998-08-29  Paul Eggert  <eggert@twinsun.com>
+
+	* configure.in (AC_STRUCT_ST_MTIM_NSEC):
+	Renamed from AC_STRUCT_ST_MTIM.
+
+	* acinclude.m4 (AC_STRUCT_ST_MTIM_NSEC):  Likewise.
+	Port to UnixWare 2.1.2 and pedantic Solaris 2.6.
+
+	* acconfig.h (ST_MTIM_NSEC):
+	Renamed from HAVE_ST_MTIM, with a new meaning.
+
+	* filedef.h (FILE_TIMESTAMP_FROM_S_AND_NS):
+	Use new ST_MTIM_NSEC macro.
+
+1998-08-26  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (check_dep): For any intermediate file, not just
+	secondary ones, try implicit and default rules if no explicit
+	rules are given.  I'm not sure why this was restricted to
+	secondary rules in the first place.
+
+1998-08-24  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo (Special Targets): Update documentation for
+	.INTERMEDIATE: if used with no dependencies, then it does nothing;
+	old docs said it marked all targets as intermediate, which it
+	didn't... and which would be silly :).
+
+	* implicit.c (pattern_search): If we find a dependency in our
+	internal tables, make sure it's not marked intermediate before
+	accepting it as a found_file[].
+
+1998-08-20  Paul D. Smith  <psmith@gnu.org>
+
+	* ar.c (ar_glob): Use existing alpha_compare() with qsort.
+	(ar_glob_alphacompare): Remove it.
+
+	Modify Paul Eggert's patch so we don't abandon older systems:
+
+	* configure.in: Warn the user if neither waitpid() nor wait3() is
+	available.
+
+	* job.c (WAIT_NOHANG): Don't syntax error on ancient hosts.
+	(child_handler, dead_children): Define these if WAIT_NOHANG is not
+	available.
+	(reap_children): Only track the dead_children count if no
+	WAIT_NOHANG.  Otherwise, it's a boolean.
+
+	* main.c (main): Add back signal handler if no WAIT_NOHANG is
+	available; only use default signal handler if it is.
+
+1998-08-20  Paul Eggert  <eggert@twinsun.com>
+
+	Install a more robust signal handling mechanism for systems which
+	support it.
+
+	* job.c (WAIT_NOHANG): Define to a syntax error if our host
+	is truly ancient; this should never happen.
+	(child_handler, dead_children): Remove.
+	(reap_children): Don't try to keep separate track of how many
+	dead children we have, as this is too bug-prone.
+	Just ask the OS instead.
+	(vmsHandleChildTerm): Fix typo in error message; don't mention
+	child_handler.
+
+	* main.c (main): Make sure we're not ignoring SIGCHLD/SIGCLD;
+	do this early, before we could possibly create a subprocess.
+	Just use the default behavior; don't have our own handler.
+
+1998-08-18  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* read.c (read_makefile) [__MSDOS__, WINDOWS32]: Add code to
+	recognize library archive members when dealing with drive spec
+	mess.  Discovery and initial fix by George Racz <gracz@mincom.com>.
+
+1998-08-18  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Check for stdlib.h explicitly (some hosts have it
+	but don't have STDC_HEADERS).
+	* make.h: Use HAVE_STDLIB_H.  Clean up some #defines.
+	* config.ami: Re-compute based on new config.h.in contents.
+	* config.h-vms: Ditto.
+	* config.h.W32: Ditto.
+	* configh.dos: Ditto.
+
+	* dir.c (find_directory) [WINDOWS32]: Windows stat() fails if
+	directory names end with `\' so strip it.
+
+1998-08-17  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo: Added copyright year to the printed copy.  Removed
+	the price from the manual.  Change the top-level reference to
+	running make to be "Invoking make" instead of "make Invocation",
+	to comply with GNU doc standards.
+
+	* make.h (__format__, __printf__): Added support for these in
+	__attribute__ macro.
+	(message, error, fatal): Use ... prototype form under __STDC__.
+	Add __format__ attributes for printf-style functions.
+
+	* configure.in (AC_FUNC_VPRINTF): Check for vprintf()/_doprnt().
+
+	* misc.c (message, error, fatal): Add preprocessor stuff to enable
+	creation of variable-argument functions with appropriate
+	prototypes, that works with ANSI, pre-ANSI, varargs.h, stdarg.h,
+	v*printf(), _doprnt(), or none of the above.  Culled from GNU
+	fileutils and slightly modified.
+	(makefile_error, makefile_error): Removed (merged into error() and
+	fatal(), respectively).
+	* amiga.c: Use them.
+	* ar.c: Use them.
+	* arscan.c: Use them.
+	* commands.c: Use them.
+	* expand.c: Use them.
+	* file.c: Use them.
+	* function.c: Use them.
+	* job.c: Use them.
+	* main.c: Use them.
+	* misc.c: Use them.
+	* read.c: Use them.
+	* remake.c: Use them.
+	* remote-cstms.c: Use them.
+	* rule.c: Use them.
+	* variable.c: Use them.
+
+	* make.h (struct floc): New structure to store file location
+	information.
+	* commands.h (struct commands): Use it.
+	* variable.c (try_variable_definition): Use it.
+	* commands.c: Use it.
+	* default.c: Use it.
+	* file.c: Use it.
+	* function.c: Use it.
+	* misc.c: Use it.
+	* read.c: Use it.
+	* rule.c: Use it.
+
+1998-08-16  Paul Eggert  <eggert@twinsun.com>
+
+	* filedef.h (FILE_TIMESTAMP_PRINT_LEN_BOUND): Add 10, for nanoseconds.
+
+1998-08-16  Paul Eggert  <eggert@twinsun.com>
+
+	* filedef.h (FLOOR_LOG2_SECONDS_PER_YEAR): New macro.
+	(FILE_TIMESTAMP_PRINT_LEN_BOUND): Tighten bound, and try to
+	make it easier to understand.
+
+1998-08-14  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (read_makefile): We've already unquoted any colon chars
+	by the time we're done reading the targets, so arrange for
+	parse_file_seq() on the target list to not do so again.
+
+1998-08-05  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Added glob/configure.in data.  We'll have the glob
+	code include the regular make config.h, rather than creating its
+	own.
+
+	* getloadavg.c (main): Change return type to int.
+
+1998-08-01  Paul Eggert  <eggert@twinsun.com>
+
+	* job.c (reap_children): Ignore unknown children.
+
+1998-07-31  Paul D. Smith  <psmith@gnu.org>
+
+	* make.h, filedef.h, dep.h, rule.h, commands.h, remake.c:
+	Add prototypes for functions.  Some prototypes needed to be moved
+	in order to get #include order reasonable.
+
+1998-07-30  Paul D. Smith  <psmith@gnu.org>
+
+	* make.h: Added MIN/MAX.
+	* filedef.h: Use them; remove FILE_TIMESTAMP_MIN.
+
+1998-07-30  Paul Eggert  <eggert@twinsun.com>
+
+        Add support for sub-second timestamp resolution on hosts that
+        support it (just Solaris 2.6, so far).
+
+	* acconfig.h (HAVE_ST_MTIM, uintmax_t): New undefs.
+	* acinclude.m4 (jm_AC_HEADER_INTTYPES_H, AC_STRUCT_ST_MTIM,
+        jm_AC_TYPE_UINTMAX_T): New defuns.
+	* commands.c (delete_target): Convert file timestamp to
+        seconds before comparing to archive timestamp.  Extract mod
+        time from struct stat using FILE_TIMESTAMP_STAT_MODTIME.
+	* configure.in (C_STRUCT_ST_MTIM, jm_AC_TYPE_UINTMAX_T): Add.
+        (AC_CHECK_LIB, AC_CHECK_FUNCS): Add clock_gettime.
+	* file.c (snap_deps): Use FILE_TIMESTAMP, not time_t.
+        (file_timestamp_now, file_timestamp_sprintf): New functions.
+        (print_file): Print file timestamps as FILE_TIMESTAMP, not
+        time_t.
+	* filedef.h: Include <inttypes.h> if available and if HAVE_ST_MTIM.
+        (FILE_TIMESTAMP, FILE_TIMESTAMP_STAT_MODTIME, FILE_TIMESTAMP_MIN,
+        FILE_TIMESTAMPS_PER_S, FILE_TIMESTAMP_FROM_S_AND_NS,
+        FILE_TIMESTAMP_DIV, FILE_TIMESTAMP_MOD, FILE_TIMESTAMP_S,
+        FILE_TIMESTAMP_NS, FILE_TIMESTAMP_PRINT_LEN_BOUND): New macros.
+        (file_timestamp_now, file_timestamp_sprintf): New decls.
+        (struct file.last_mtime, f_mtime, file_mtime_1, NEW_MTIME):
+        time_t -> FILE_TIMESTAMP.
+	* implicit.c (pattern_search): Likewise.
+	* vpath.c (vpath_search, selective_vpath_search): Likewise.
+	* main.c (main): Likewise.
+	* remake.c (check_dep, name_mtime, library_search, f_mtime): Likewise.
+        (f_mtime): Use file_timestamp_now instead of `time'.
+        Print file timestamp with file_timestamp_sprintf.
+	* vpath.c (selective_vpath_search): Extract file time stamp from
+        struct stat with FILE_TIMESTAMP_STAT_MODTIME.
+
+1998-07-28  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.77 released.
+
+	* dosbuild.bat: Change to DOS CRLF line terminators.
+
+	* make-stds.texi: Update from latest version.
+
+	* make.texinfo (Options Summary): Clarify that the -r option
+	affects only rules, not builtin variables.
+
+1998-07-27  Paul D. Smith  <psmith@gnu.org>
+
+	* make.h: Make __attribute__ resolve to empty for non-GCC _and_
+	for GCC pre-2.5.x.
+
+	* misc.c (log_access): Print UID/GID's as unsigned long int for
+	maximum portability.
+
+	* job.c (reap_children): Print PIDs as long int for maximum
+	portability.
+
+1998-07-24  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* Makefile.DOS (*_INSTALL, *_UNINSTALL): Replace `true' with `:'.
+
+1998-07-25  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.76.94 released.
+
+1998-07-23  Paul D. Smith  <psmith@gnu.org>
+
+	* config.h.W32.template: Make sure all the #defines of macros here
+	have a value (e.g., use ``#define HAVE_STRING_H 1'' instead of
+	just ``#define HAVE_STRING_H''.  Keeps the preprocessor happy in
+	some contexts.
+
+	* make.h: Remove __attribute__((format...)) stuff; using it with
+	un-prototyped functions causes older GCC's to fail.
+
+	* Version 3.76.93 released.
+
+1998-07-22  Paul D. Smith  <psmith@gnu.org>
+
+	* file.c (print_file_data_base): Fix average calculation.
+
+1998-07-20  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (die): Postpone the chdir() until after
+	remove_intermediates() so that intermediate targets with relative
+	pathnames are removed properly.
+
+1998-07-17  Paul D. Smith  <psmith@gnu.org>
+
+	* filedef.h (struct file): New flag: did we print an error or not?
+
+	* remake.c (no_rule_error): New function to print error messages,
+	extraced from remake_file().
+
+	* remake.c (remake_file): Invoke the new error print function.
+	(update_file_1): Invoke the error print function if we see that we
+	already tried this target and it failed, but that an error wasn't
+	printed for it.  This can happen if a file is included with
+	-include or sinclude and couldn't be built, then later is also
+	the dependency of another target.  Without this change, make just
+	silently stops :-/.
+
+1998-07-16  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo: Removed "beta" version designator.
+	Updated ISBN for the next printing.
+
+1998-07-13  Paul Eggert  <eggert@twinsun.com>
+
+	* acinclude.m4: New AC_LFS macro to determine if special compiler
+	flags are needed to allow access to large files (e.g., Solaris 2.6).
+	* configure.in: Invoke it.
+
+1998-07-08  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* Makefile.DOS: track changes in Makefile.in.
+
+1998-07-07  Paul D. Smith  <psmith@gnu.org>
+
+	* remote-cstms.c (start_remote_job): Move gethostbyaddr() to the
+	top so host is initialized early enough.
+
+	* acinclude.m4: New file.  Need some special autoconf macros to
+	check for network libraries (-lsocket, -lnsl, etc.) when
+	configuring Customs.
+
+	* configure.in (make_try_customs): Invoke new network libs macro.
+
+1998-07-06  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.76.92 released.
+
+	* README.customs: Added to the distribution.
+
+	* configure.in (make_try_customs): Rewrite to require an installed
+	Customs library, rather than looking at the build directory.
+
+	* Makefile.am (man_MANS): Install make.1.
+	* make.1: Renamed from make.man.
+
+	* make.texinfo (Bugs): New mailing list address for GNU make bug
+	reports.
+
+1998-07-02  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.76.91 released.
+
+	* default.c: Added default rule for new-style RCS master file
+	storage; ``% :: RCS/%''.
+	Added default rules for DOS-style C++ files with suffix ".cpp".
+	They use the new LINK.cpp and COMPILE.cpp macros, which are set by
+	default to be equal to LINK.cc and COMPILE.cc.
+
+1998-06-19  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* job.c (start_job_command): Reset execute_by_shell after an empty
+        command was skipped.
+
+1998-06-09  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main): Keep track of the temporary filename created when
+	reading a makefile from stdin (-f-) and attempt to remove it
+	as soon as we know we're not going to re-exec.  If we are, add it
+	to the exec'd make's cmd line with "-o" so the exec'd make doesn't
+	try to rebuild it.  We still have a hole: if make re-execs then
+	the temporary file will never be removed.  To fix this we'd need
+	a brand new option that meant "really delete this".
+	* AUTHORS, getopt.c, getopt1.c, getopt.h, main.c (print_version):
+	Updated mailing addresses.
+
+1998-06-08  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main): Andreas Luik <luik@isa.de> points out that the
+	check for makefile :: rules with commands but no dependencies
+	causing a loop terminates incorrectly.
+
+	* maintMakefile: Make a template for README.DOS to update version
+	numbers.
+
+1998-05-30  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
+
+	* remake.c (update_file_1): Don't free the memory for the
+	dependency structure when dropping a circular dependency.
+
+1998-05-30  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* dir.c (file_exists_p, file_impossible_p, file_impossible)
+	[__MSDOS__, WINDOWS32]: Retain trailing slash in "d:/", and make
+	dirname of "d:foo" be "d:".
+
+1998-05-26  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
+
+	* read.c (read_makefile): Avoid running past EOS when scanning
+	file name after `include'.
+
+1998-05-26  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
+
+	* make.texinfo (Flavors): Correct description of conditional
+	assignment, which is not equivalent to ifndef.
+	(Setting): Likewise.
+
+1998-05-24  Paul D. Smith  <psmith@gnu.org>
+
+	* arscan.c (ar_name_equal): strncmp() might be implemented as a
+	macro, so don't put preprocessor conditions inside the arguments
+	list.
+
+1998-05-23  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* read.c (read_makefile) [__MSDOS__, WINDOWS32]: Skip colons in
+	drive specs when parsing targets, target-specific variables and
+	static pattern rules.  A colon can only be part of drive spec if
+	it is after the first letter in a token.
+
+1998-05-22  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* remake.c (f_mtime) [__MSDOS__]: Allow up to 3 sec of skew before
+	yelling bloody murder.
+
+	* dosbuild.bat: Use -DINCLUDEDIR= and -DLIBDIR= where appropriate.
+
+	* read.c (parse_file_seq): Combine the special file-handling code
+	for WINDOWS32 and __MSDOS__ into a single snippet.
+	(get_next_mword) [__MSDOS__, WINDOWS32]: Allow a word to include a
+	colon as part of a drive spec.
+
+	* job.c (batch_mode_shell) [__MSDOS__]: Declare.
+
+1998-05-20  Paul D. Smith  <psmith@gnu.org>
+
+	* Version 3.76.90 released.
+
+1998-05-19  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo (Make Errors): Added a new appendix describing
+	common errors make might generate and how to resolve them (or at
+	least more information on what they mean).
+
+	* maintMakefile (NMAKEFILES): Use the new automake 1.3 feature
+	to create a dependency file to construct Makefile.DOS, SMakefile,
+	and NMakefile.
+	(.dep_segment): Generate the dependency fragment file.
+
+1998-05-14  Paul D. Smith  <psmith@gnu.org>
+
+	* make.man: Minor changes.
+
+1998-05-13  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (pattern_matches,expand_function): Change variables
+	and types named "word" to something else, to avoid compilation
+	problems on Cray C90 Unicos.
+	* variable.h: Modify the function prototype.
+
+1998-05-11  Rob Tulloh  <rob_tulloh@tivoli.com>
+
+	* job.c (construct_command_argv_internal) [WINDOWS32]: Turn off
+	echo when using a batch file, and make sure the command ends in a
+	newline.
+
+1998-05-03  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in (make_try_customs): Add some customs flags if the
+	user configures custom support.
+
+	* job.c, remote-cstms.c: Merge in changes for custom library.
+
+	* remote-stub.c: Add option to stub start_remote_job_p().
+
+1998-05-01  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (f_mtime): Install VPATH+ handling for archives; use
+	the hname field instead of the name field, and rehash when
+	appropriate.
+
+1998-04-30  Paul D. Smith  <psmith@gnu.org>
+
+	* rule.c (print_rule_data_base): Print out any pattern-specific
+	variable values into the rules database.
+
+	* variable.c (print_variable_set): Make this variable extern, to
+	be called by print_rule_data_base() for pattern-specific variables.
+
+	* make.texinfo (Pattern-specific): Document pattern-specific
+	variables.
+
+1998-04-29  Paul D. Smith  <psmith@gnu.org>
+
+	* expand.c (variable_expand_for_file): Make static; its only
+	called internally.  Look up this target in the list of
+	pattern-specific variables and insert the variable set into the
+	queue to be searched.
+
+	* filedef.h (struct file): Add a new field to hold the
+	previously-found pattern-specific variable reference.  Add a new
+	flag to remember whether we already searched for this file.
+
+	* rule.h (struct pattern_var): New structure for storing
+	pattern-specific variable values.  Define new function prototypes.
+
+	* rule.c: New variables pattern_vars and last_pattern_var for
+	storage and handling of pattern-specific variable values.
+	(create_pattern_var): Create a new pattern-specific variable value
+	structure.
+	(lookup_pattern_var): Try to match a target to one of the
+	pattern-specific variable values.
+
+1998-04-22  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo (Target-specific): Document target-specific
+	variables.
+
+1998-04-21  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (define_variable_in_set): Made globally visible.
+	(lookup_variable_in_set): New function: like lookup_variable but
+	look only in a specific variable set.
+	(target_environment): Use lookup_variable_in_set() to get the
+	correct export rules for a target-specific variable.
+	(create_new_variable_set): Create a new variable set, and just
+	return it without installing it anywhere.
+	(push_new_variable_scope): Reimplement in terms of
+	create_new_variable_set.
+
+	* read.c (record_target_var): Like record_files, but instead of
+	files create a target-specific variable value for each of the
+	listed targets.  Invoked from read_makefile() when the target line
+	turns out to be a target-specific variable assignment.
+
+1998-04-19  Paul D. Smith <psmith@gnu.org>
+
+	* read.c (read_makefile): Rewrite the entire target parsing
+	section to implement target-specific variables.  In particular, we
+	cannot expand the entire line as soon as it's read in, since we
+	may want to evaluate parts of it with different variable contexts
+	active.  Instead, start expanding from the beginning until we find
+	the `:' (or `::'), then determine what kind of line this is and
+	continue appropriately.
+
+	* read.c (get_next_mword): New function to parse a makefile line
+	by "words", considering an entire variable or function as one
+	word.  Return the type read in, along with its starting position
+	and length.
+	(enum make_word_type): The types of words that are recognized by
+	get_next_mword().
+
+	* variable.h (struct variable): Add a flag to specify a per-target
+	variable.
+
+	* expand.c: Make variable_buffer global.  We need this during the
+	new parsing of the makefile.
+	(variable_expand_string): New function.  Like variable_expand(),
+	but start at a specific point in the buffer, not the beginning.
+	(variable_expand): Rewrite to simply call variable_expand_string().
+
+1998-04-13  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (update_goal_chain): Allow the rebuilding makefiles
+	step to use parallel jobs.  Not sure why this was disabled:
+	hopefully we won't find out :-/.
+
+1998-04-11  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main): Set the CURDIR makefile variable.
+	* make.texinfo (Recursion): Document it.
+
+1998-03-17  Paul D. Smith  <psmith@gnu.org>
+
+	* misc.c (makefile_fatal): If FILE is nil, invoke plain fatal().
+	* variable.c (try_variable_definition): Use new feature.
+
+1998-03-10  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main): Don't pass included, rebuilt makefiles to
+	re-exec'd makes with -o.  Reopens a possible loop, but it caused
+	too many problems.
+
+1998-03-02  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (try_variable_definition): Implement ?=.
+	* make.texinfo (Setting): Document it.
+
+1998-02-28  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* job.c (start_job_command): Reset execute_by_shell after an empty
+        command, like ":", has been seen.
+
+Tue Oct 07 15:00:00 1997  Phil Brooks <phillip_brooks@hp.com>
+
+	* make.h [WINDOWS32]: make case sensitivity configurable
+	* dir.c [WINDOWS32]: make case sensitivity configurable
+	* README.W32: Document case sensitivity
+	* config.ami: Share case warping code with Windows
+
+Mon Oct  6 18:48:45 CDT 1997 Rob Tulloh <rob_tulloh@dev.tivoli.com>
+
+	* w32/subproc/sub_proc.c: Added support for MKS toolkit shell
+	(turn on HAVE_MKS_SHELL).
+	* read.c [WINDOWS32]: Fixed a problem with multiple target rules
+ 	reported by Gilbert Catipon (gcatipon@tibco.com).  If multiple
+ 	path tokens in a rule did not have drive letters, make would
+ 	incorrectly concatenate the 2 tokens together.
+	* main.c/variable.c [WINDOWS32]: changed SHELL detection code to
+ 	follow what MSDOS did. In addition to watching for SHELL variable
+ 	updates, make's main will attempt to default the value of SHELL
+ 	before and after makefiles are parsed.
+	* job.c/job.h [WINDOWS32]: The latest changes made to enable use
+ 	of the GNUWIN32 shell from make could cause make to fail due to a
+ 	concurrency condition between parent and child processes.  Make
+ 	now creates a batch file per job instead of trying to reuse the
+ 	same singleton batch file.
+	* job.c/job.h/function.c/config.h.W32 [WINDOWS32]: Renamed macro
+ 	from HAVE_CYGNUS_GNUWIN32_TOOLS to BATCH_MODE_ONLY_SHELL. Reworked
+ 	logic to reduce complexity. WINDOWS32 now uses the unixy_shell
+ 	variable to detect Bourne-shell compatible environments. There is
+ 	also a batch_mode_shell variable that determines whether not
+ 	command lines should be executed via script files. A WINDOWS32
+ 	system with no sh.exe installed would have unixy_shell set to
+ 	FALSE and batch_mode_shell set to TRUE. If you have a unixy shell
+ 	that does not behave well when invoking things via 'sh -c xxx',
+ 	you may want to turn on BATCH_MODE_ONLY_SHELL and see if things
+ 	improve.
+	* NMakefile: Added /D DEBUG to debug build flags so that unhandled
+ 	exceptions could be debugged.
+
+Mon Oct  6 00:04:25 1997  Rob Tulloh <rob_tulloh@dev.tivoli.com>
+
+	* main.c [WINDOWS32]: The function define_variable() does not
+ 	handle NULL. Test before calling it to set Path.
+	* main.c [WINDOWS32]: Search Path again after makefiles have been
+	parsed to detect sh.exe.
+	* job.c [WINDOWS32]: Added support for Cygnus GNU WIN32 tools.
+	To use, turn on HAVE_CYGNUS_GNUWIN32_TOOLS in config.h.W32.
+	* config.h.W32: Added HAVE_CYGNUS_GNUWIN32_TOOLS macro.
+
+Sun Oct  5 22:43:59 1997  John W. Eaton <jwe@bevo.che.wisc.edu>
+
+	* glob/glob.c (glob_in_dir) [VMS]: Globbing shouldn't be
+	case-sensitive.
+	* job.c (child_execute_job) [VMS]: Use a VMS .com file if the
+	command contains a newline (e.g. from a define/enddef block).
+	* vmsify.c (vmsify): Return relative pathnames wherever possible.
+	* vmsify.c (vmsify): An input string like "../.." returns "[--]".
+
+Wed Oct  1 15:45:09 1997  Rob Tulloh <rob_tulloh@tivoli.com>
+
+	* NMakefile: Changed nmake to $(MAKE).
+	* subproc.bat: Take the make command name from the command
+	line. If no command name was given, default to nmake.
+	* job.c [MSDOS, WINDOWS32]: Fix memory stomp: temporary file names
+	are now always created in heap memory.
+	* w32/subproc/sub_proc.c: New implementation of make_command_line()
+	which is more compatible with different Bourne shell implementations.
+	Deleted the now obsolete fix_command_line() function.
+	* main.c [WINDOWS32]: Any arbitrary spelling of Path can be
+	detected. Make will ensure that the special spelling `Path' is
+	inserted into the environment when the path variable is propagated
+	within itself and to make's children.
+	* main.c [WINDOWS32]: Detection of sh.exe was occurring too
+	soon. The 2nd check for the existence of sh.exe must come after
+	the call to read_all_makefiles().
+
+Fri Sep 26 01:14:18 1997  <zinser@axp602.gsi.de>
+
+	* makefile.com [VMS]: Fixed definition of sys.
+	* readme.vms: Comments on what's changed lately.
+
+Fri Sep 26 01:14:18 1997  John W. Eaton <jwe@bevo.che.wisc.edu>
+
+	* read.c (read_all_makefiles): Allow make to find files named
+	"MAKEFILE" with no extension on VMS.
+	* file.c (lookup_file): Lowercase filenames on VMS.
+
+1997-09-29  Paul D. Smith  <psmith@baynetworks.com>
+
+	* read.c (read_makefile): Reworked target detection again; the old
+	version had an obscure quirk.
+
+Fri Sep 19 09:20:49 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* Version 3.76.1 released.
+
+	* Makefile.am: Add loadavg files to clean rules.
+
+	* configure.in (AC_OUTPUT): Remove stamp-config; no longer needed.
+	* Makefile.ami (distclean): Ditto.
+	* SMakefile (distclean): Ditto.
+
+	* main.c (main): Arg count should be int, not char!  Major braino.
+
+Tue Sep 16 10:18:22 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* Version 3.76 released.
+
+Tue Sep  2 10:07:39 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* function.c (expand_function): When processing $(shell...)
+  	translate a CRLF (\r\n) sequence as well as a newline (\n) to a
+ 	space.  Also remove an ending \r\n sequence.
+	* make.texinfo (Shell Function): Document it.
+
+Fri Aug 29 12:59:06 1997  Rob Tulloh  <rob_tulloh@tivoli.com>
+
+	* w32/pathstuff.c (convert_Path_to_windows32): Fix problem where
+ 	paths which contain single character entries like `.' are not
+ 	handled correctly.
+
+	* README.W32: Document path handling issues on Windows systems.
+
+Fri Aug 29 02:01:27 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* Version 3.75.93.
+
+Thu Aug 28 19:39:06 1997  Rob Tulloh  <rob_tulloh@tivoli.com>
+
+	* job.c (exec_command) [WINDOWS32]: If exec_command() is invoked
+ 	from main() to re-exec make, the call to execvp() would
+ 	incorrectly return control to parent shell before the exec'ed
+ 	command could run to completion. I believe this is a feature of
+ 	the way that execvp() is implemented on top of WINDOWS32 APIs. To
+ 	alleviate the problem, use the supplied process launch function in
+ 	the sub_proc library and suspend the parent process until the
+ 	child process has run.  When the child exits, exit the parent make
+ 	with the exit code of the child make.
+
+Thu Aug 28 17:04:47 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* Makefile.DOS.template (distdir): Fix a line that got wrapped in
+	email.
+
+	* Makefile.am (loadavg): Give the necessary cmdline options when
+	linking loadavg.
+
+	* configure.in: Check for pstat_getdynamic for getloadvg on HP.
+
+	* job.c (start_job_command) [VMS, _AMIGA]: Don't perform empty
+	command optimization on these systems; it doesn't make sense.
+
+Wed Aug 27 17:09:32 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* Version 3.75.92
+
+Tue Aug 26 11:59:15 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* main.c (print_version): Add '97 to copyright years.
+
+	* read.c (do_define): Check the length of the array before looking
+	at a particular offset.
+
+	* job.c (construct_command_argv_internal): Examine the last byte
+	of the previous arg, not the byte after that.
+
+Sat Aug 23 1997  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* Makefile.DOS.template: New file (converted to Makefile.DOS in
+	the distribution).
+
+	* configure.bat: Rewrite to use Makefile.DOS instead of editing
+        Makefile.in.  Add support for building from outside of the source
+        directory.  Fail if the environment block is too small.
+
+	* configh.dos: Use <sys/config.h>.
+
+	* README.DOS: Update instructions.
+
+Fri Aug 22 1997  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* job.c (start_job_command) [__MSDOS__]: Don't test for "/bin/sh"
+        literally, use value of unixy_shell instead.
+
+	* filedef.h (NEW_MTIME): Use 1 less than maximum possible value if
+        time_t is unsigned.
+
+Sat Aug 16 00:56:15 1997  John W. Eaton  <jwe@bevo.che.wisc.edu>
+
+	* vmsify.c (vmsify, case 11): After translating `..' elements, set
+        nstate to N_OPEN if there are still more elements to process.
+        (vmsify, case 2): After translating `foo/bar' up to the slash,
+        set nstate to N_OPEN, not N_DOT.
+
+Fri Aug  8 15:18:09 1997  John W. Eaton  <jwe@bevo.che.wisc.edu>
+
+	* dir.c (vmsstat_dir): Leave name unmodified on exit.
+	* make.h (PATH_SEPARATOR_CHAR): Set to comma for VMS.
+	* vpath.c: Fix comments to refer to path separator, not colon.
+        (selective_vpath_search): Avoid Unixy slash handling for VMS.
+
+Thu Aug  7 22:24:03 1997  John W. Eaton  <jwe@bevo.che.wisc.edu>
+
+	* ar.c [VMS]: Don't declare ar_member_touch.
+	Delete VMS version of ar_member_date.
+	Enable non-VMS versions of ar_member_date and ar_member_date_1 for
+	VMS too.
+	* arscan.c (VMS_get_member_info): New function.
+	(ar_scan): Provide version for VMS systems.
+	(ar_name_equal): Simply compare name and mem on VMS systems.
+	Don't define ar_member_pos or ar_member_touch on VMS systems.
+
+	* config.h-vms (pid_t, uid_t): Don't define.
+
+	* remake.c: Delete declaration of vms_stat.
+	(name_mtime): Don't call vms_stat.
+	(f_mtime) [VMS]: Funky time value manipulation no longer necessary.
+
+	* file.c (print_file): [VMS] Use ctime, not cvt_time.
+
+	* make.h [VMS]: Don't define POSIX.
+
+	* makefile.com (filelist): Include ar and arscan.
+	Also include them in the link commands.
+	Don't define NO_ARCHIVES in cc command.
+
+	* makefile.vms (ARCHIVES, ARCHIVES_SRC): Uncomment.
+	(defines): Delete NO_ARCHIVES from list.
+
+	* remake.c (f_mtime): Only check to see if intermediate file is
+	out of date if it also exists (i.e., mtime != (time_t) -1).
+
+	* vmsdir.h (u_long, u_short): Skip typedefs if using DEC C.
+
+Fri Jun 20 23:02:07 1997  Rob Tulloh  <rob_tulloh@tivoli.com>
+
+	* w32/subproc/sub_proc.c: Get W32 sub_proc to handle shebang
+	(#!/bin/sh) in script files correctly.
+	Fixed a couple of memory leaks.
+	Fixed search order in find_file() (w32/subproc/sub_proc.c) so that
+	files with extensions are preferred over files without extensions.
+	Added search for files with .cmd extension too.
+	* w32/subproc/misc.c (arr2envblk): Fixed memory leak.
+
+Mon Aug 18 09:41:08 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* Version 3.75.91
+
+Fri Aug 15 13:50:54 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* read.c (do_define): Remember to count the newline after the endef.
+
+Thu Aug 14 23:14:37 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* many: Rewrote builds to use Automake 1.2.
+
+	* AUTHORS: New file.
+	* maintMakefile: Contains maintainer-only make snippets.
+	* GNUmakefile: This now only runs the initial auto* tools.
+	* COPYING,texinfo.tex,mkinstalldirs,install-sh: Removed (obtained
+	automatically by automake).
+	* compatMakefile: Removed (not needed anymore).
+	* README,build.sh.in: Removed (built from templates).
+	* config.h.in,Makefile.in: Removed (built by tools).
+
+Wed Aug 13 02:22:08 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* make.texinfo: Updates for DOS/Windows information (Eli Zaretskii)
+	* README,README.DOS: Ditto.
+
+	* remake.c (update_file_1,f_mtime): Fix GPATH handling.
+	* vpath.c (gpath_search): Ditto.
+
+	* file.c (rename_file): New function: rehash, but also rename to
+	the hashname.
+	* filedef.h: Declare it.
+
+	* variable.c (merge_variable_set_lists): Remove free() of variable
+	set; since various files can share variable sets we don't want to
+	free them here.
+
+Tue Aug 12 10:51:54 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* configure.in: Require autoconf 2.12
+
+	* make.texinfo: Replace all "cd subdir; $(MAKE)" examples with a
+	more stylistically correct "cd subdir && $(MAKE)".
+
+	* main.c: Global variable `clock_skew_detected' defined.
+	(main): Print final warning if it's set.
+	* make.h: Declare it.
+	* remake.c (f_mtime): Test and set it.
+
+	* job.c (start_job_command): Add special optimizations for
+ 	"do-nothing" rules, containing just the shell no-op ":".  This is
+ 	useful for timestamp files and can make a real difference if you
+ 	have a lot of them (requested by Fergus Henderson <fjh@cs.mu.oz.au>).
+
+	* configure.in,Makefile.in: Rewrote to use the new autoconf
+	program_transform_name macro.
+
+	* function.c (function_strip): Strip newlines as well as spaces
+	and TABs.
+
+Fri Jun  6 23:41:04 1997  Rob Tulloh <rob_tulloh@tivoli.com>
+
+	* remake.c (f_mtime): Datestamps on FAT-based files are rounded to
+	even seconds when stored, so if the date check fails on WINDOWS32
+	 systems, see if this "off-by-one" error is the problem.
+
+	* General: If your TZ environment variable is not set correctly
+	then all your timestamps will be off by hours.  So, set it!
+
+Mon Apr  7 02:06:22 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* Version 3.75.1
+
+	* compatMakefile (objs): Define & use the $(GLOB) variable so
+	that it's removed correctly from build.sh.in when it's built.
+
+	* configure.in: On Solaris we can use the kstat_*() functions to
+	get load averages without needing special permissions.  Add a
+	check for -lkstat to see if we have it.
+
+	* getloadavg.c (getloadavg): Use HAVE_LIBKSTAT instead of SUN5 as
+	the test to enable kstat_open(), etc. processing.
+
+Fri Apr  4 20:21:18 1997  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* <lots>: Fixes to work in the DJGPP DOS environment.
+
+Mon Mar 31 02:42:52 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* function.c (expand_function): Added new function $(wordlist).
+
+	* make.texinfo (Filename Functions): Document $(wordlist) function.
+
+	* vpath.c (build_vpath_lists): Construct the GPATH variable
+	information in the same manner we used to construct VPATH.
+	(gpath_search): New function to search GPATH.
+
+	* make.h: Declare the new function.
+
+	* remake.c (update_file_1): Call it, and keep VPATH if it's found.
+
+	* make.texinfo (Search Algorithm): Document GPATH variable.
+
+Sun Mar 30 20:57:16 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* main.c (handle_non_switch_argument): Defined the MAKECMDGOALS
+	variable to contain the user options passed in on the cmd line.
+
+	* make.texinfo (Goals): Document MAKECMDGOALS variable.
+
+	* remake.c (f_mtime): Print a warning if we detect a clock skew
+	error, rather than failing.
+
+	* main.c (main): If we rebuild any makefiles and need to re-exec,
+	add "-o<mkfile>" options for each makefile rebuilt to avoid
+	infinite looping.
+
+Fri Mar 28 15:26:05 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* job.c (construct_command_argv_internal): Track whether the last
+	arg in the cmd string was empty or not (Roland).
+	(construct_command_argv_internal): If the shell line is empty,
+	don't do anything (Roland).
+
+	* glob/glob.h,glob/glob.c,glob/fnmatch.c,glob/fnmatch.h: Install
+	the latest changes from the GLIBC version of glob (Ulrich Drepper).
+
+	* getloadavg.c,make-stds.texi: New version (Roland).
+
+	* (ALL): Changed WIN32 to W32 or WINDOWS32 (RMS).
+
+Mon Mar 24 15:33:34 1997  Rob Tulloh  <rob_tulloh@tivoli.com>
+
+	* README.W32: Describe preliminary FAT support.
+
+	* build_w32.bat: Use a variable for the final exe name.
+
+	* dir.c (find_directory): W32: Find the filesystem type.
+	(dir_contents_file_exists_p): W32: for FAT filesystems, always
+	rehash since FAT doesn't change directory mtime on change.
+
+	* main.c (handle_runtime_exceptions): W32: Add an
+ 	UnhandledExceptionFilter so that when make bombs due to ^C or a
+ 	bug, it won't cause a GUI requestor to pop up unless debug is
+ 	turned on.
+	(main): Call it.
+
+Mon Mar 24 00:57:34 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* configure.in, config.h.in, config.ami, config.h-vms, config.h.w32:
+ 	Check for memmove() function.
+
+	* make.h (bcopy): If memmove() available, define bcopy() to use it.
+	Otherwise just use bcopy().  Don't use memcpy(); it's not guaranteed
+	to handle overlapping moves.
+
+	* read.c (read_makefile): Fix some uninitialized memory reads
+	(reported by Purify).
+
+	* job.c (construct_command_argv_internal): Use bcopy() not
+	strcpy(); strcpy() isn't guaranteed to handle overlapping moves.
+
+	* Makefile.in: Change install-info option ``--infodir'' to
+	``--info-dir'' for use with new texinfo.
+
+	* function.c (expand_function): $(basename) and $(suffix) should
+	only search for suffixes as far back as the last directory (e.g.,
+	only the final filename in the path).
+
+Sun Mar 23 00:13:05 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* make.texinfo: Add @dircategory/@direntry information.
+	(Top): Remove previous reference to (dir) (from RMS).
+	(Static Usage): Add "all:" rule to example.
+	(Automatic Dependencies): fix .d file creation example.
+
+	* Install VPATH+ patch:
+
+	* filedef.h (struct file): Add in hname field to store the hashed
+        filename, and a flag to remember if we're using the vpath filename
+	or not.  Renamed a few functions for more clarity.
+
+	* file.c (lookup_file,enter_file,file_hash_enter): Store filenames
+	in the hash table based on their "hash name".  We can change this
+	while keeping the original target in "name".
+	(rehash_file): Renamed from "rename_file" to be more accurate.
+	Changes the hash name, but not the target name.
+
+	* remake.c (update_file_1): Modify -d output for more detailed
+ 	VPATH info.  If we don't need to rebuild, use the VPATH name.
+	(f_mtime): Don't search for vpath if we're ignoring it.  Call
+ 	renamed function rehash_file.  Call name_mtime instead of
+ 	file_mtime, to avoid infinite recursion since the file wasn't
+ 	actually renamed.
+
+	* implicit.c (pattern_search): if we find an implicit file in
+	VPATH, save the original name not the VPATH name.
+
+	* make.texinfo (Directory Search): Add a section on the new VPATH
+	functionality.
+
+Sun Dec  1 18:36:04 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
+
+	* dir.c (file_exists_p, file_impossible, file_impossible_p): If
+	dirname is empty replace it by the name of the root directory.
+	Note that this doesn't work (yet) for W32, Amiga, or VMS.
+
+Tue Oct 08 13:57:03 1996  Rob Tulloh  <tulloh@tivoli.com>
+
+	* main.c (main): W32 bug fix for PATH vars.
+
+Tue Sep 17 1996  Paul Eggert  <eggert@twinsun.com>
+
+	* filedef.h (NEW_MTIME): Don't assume that time_t is a signed
+ 	32-bit quantity.
+
+	* make.h: (CHAR_BIT, INTEGER_TYPE_SIGNED, INTEGER_TYPE_MAXIMUM,
+ 	INTEGER_TYPE_MINIMUM): New macros.
+
+Tue Aug 27 01:06:34 1996  Roland McGrath  <roland@baalperazim.frob.com>
+
+	* Version 3.75 released.
+
+	* main.c (print_version): Print out bug-reporting address.
+
+Mon Aug 26 19:55:47 1996  Roland McGrath  <roland@baalperazim.frob.com>
+
+	* main.c (print_data_base): Don't declare ctime; headers do it for us
+ 	already.
+
+Sun Jul 28 15:37:09 1996  Rob Tulloh (tulloh@tivoli.com)
+
+	* w32/pathstuff.c: Turned convert_vpath_to_w32() into a
+	real function. This was done so that VPATH could contain
+	white space separated pathnames. Please note that directory
+	paths (in VPATH/vpath context) containing white space are not
+	supported (just as they are not under Unix). See README.W32
+	for suggestions.
+
+	* w32/include/pathstuff.h: Added prototype for the new
+	function convert_vpath_to_w32. Deleted macro for same.
+
+	* README.W32: Added some notes about why I chose not to try
+	and support pathnames which contain white space and some
+	workaround suggestions.
+
+Thu Jul 25 19:53:31 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* GNUmakefile (mkdep-nolib): Use -MM option unconditionally.
+
+	* Version 3.74.7.
+
+	* main.c (define_makeflags): Back up P to point at null terminator
+	when killing final space and dash before setting MFLAGS.
+
+	From Robert Hoehne <robert.hoehne@Mathematik.TU-Chemnitz.DE>:
+	* dir.c [__MSDOS__ && DJGPP > 1]: Include <libc/dosio.h> and defin
+	`__opendir_flags' initialized to 0.
+	(dosify) [__MSDOS__ && DJGPP > 1]: Return name unchanged if _USE_LFN.
+	(find_directory) [__MSDOS__ && DJGPP > 1]: If _USE_LGN, set
+	__opendir_flags to __OPENDIR_PRESERVE_CASE.
+
+	* vmsfunctions.c (vms_stat): `sys$dassgn (DevChan);' added by kkaempf.
+
+	* GNUmakefile (w32files): Add NMakefile.
+
+	* NMakefile (LDFLAGS_debug): Value fixed by tulloh.
+
+Sat Jul 20 12:32:10 1996  Klaus Kämpf (kkaempf@progis.de)
+
+	* remake.c (f_mtime) [VMS]: Add missing `if' conditional for future
+	modtime check.
+	* config.h-vms, makefile.vms, readme.vms, vmsify.c: Update address.
+
+Sat Jul 20 05:29:43 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* configure.in: Require autoconf 2.10 or later.
+
+Fri Jul 19 16:57:27 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* Version 3.74.6.
+
+	* GNUmakefile (w32files): New variable.
+	(distfiles): Add it.
+	* w32: Updated by Rob Tulloh.
+
+	* makefile.vms (LOADLIBES): Fix typo.
+
+Sun Jul 14 12:59:27 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* job.c (construct_command_argv_internal): Fix up #else, #endifs.
+
+	* configh.dos: Define HAVE_DIRENT_H instead of DIRENT.
+
+	* remake.c (f_mtime): Don't compare MTIME to NOW if MTIME == -1.
+
+	* Version 3.74.5.
+
+	* main.c (main): Exit with status 2 when update_goal_chain returns 2.
+
+Sat Jun 22 14:56:05 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* configure.in: Don't check for _sys_siglist.
+	* make.h [HAVE__SYS_SIGLIST]: Don't test this; just punt if there is
+	no strsignal or sys_siglist.
+
+	* read.c (conditional_line): Strip ws in `ifeq (a , b)' so it is the
+	same as `ifeq (a, b)'.
+
+	* job.c (reap_children): Don't call die if handling_fatal_signal.
+
+	* file.c (file_hash_enter): Allow renaming :: to : when latter is
+	non-target, or : to :: when former is non-target.
+
+	* job.c (start_job_command): Call block_sigs.
+	(block_sigs): New function, broken out of start_job_command.
+	(reap_children): Block fatal signals around removing dead child from
+	chain and adjusting job_slots_used.
+	* job.h: Declare block_sigs.
+
+	* remote-stub.c (remote_setup, remote_cleanup): New (empty) functions.
+	* main.c (main): Call remote_setup.
+	(die): Call remote_cleanup.
+
+	* job.c (reap_children): Quiescent value of shell_function_pid is
+	zero, not -1.
+
+	* main.c (print_version): Add 96 to copyright years.
+
+Sat Jun 15 20:30:01 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
+
+	* read.c (find_char_unquote): Avoid calling strlen on every call
+	just to throw away the value most of the time.
+
+Sun Jun  2 12:24:01 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* main.c (decode_env_switches): Prepend '-' to ARGV[1] if it contains
+	no '=', regardless of ARGC.
+	(define_makeflags): Elide leading '-' from MAKEFLAGS value if first
+	word is short option, regardless of WORDS.
+
+Wed May 22 17:24:51 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* makefile.vms: Set LOADLIBES.
+	* makefile.com (link_using_library): Fix typo.
+
+Wed May 15 17:37:26 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* dir.c (print_dir_data_base): Use %ld dev and ino and cast them to
+	long.
+
+Wed May 15 10:14:14 CDT 1996  Rob Tulloh  <tulloh@tivoli.com>
+
+	* dir.c: W32 does not support inode. For now, fully qualified
+	pathname along with st_mtime will be keys for files.
+	Fixed problem where vpath can be confused when files
+	are added to a directory after the directory has already been
+	read in. The code now attempts to reread the directory if it
+	discovers that the datestamp on the directory has changed since
+	it was cached by make. This problem only seems to occur on W32
+	right now so it is lumped under port #ifdef WINDOWS32.
+
+	* function.c: W32: call subproc library (CreateProcess()) instead of
+	fork/exec.
+
+	* job.c: W32: Added the code to do fork/exec/waitpid style processing
+	on W32 systems via calls to subproc library.
+
+	* main.c: W32: Several things added here. First, there is code
+	for dealing with PATH and SHELL defaults. Make tries to figure
+	out if the user has %PATH% set in the environment and sets it to
+	%Path% if it is not set already. Make also looks to see if sh.exe
+	is anywhere to be found. Code path through job.c will change
+	based on existence of a working Bourne shell. The checking for
+	default shell is done twice: once before makefiles are read in
+	and again after. Fall back to MSDOS style execution mode if no sh.exe
+	is found. Also added some debug support that allows user to pause make
+	with -D switch and attach a debugger. This is especially useful for
+	debugging recursive calls to make where problems appear only in the
+	sub-make.
+
+	* make.h: W32: A few macros and header files for W32 support.
+
+	* misc.c: W32: Added a function end_of_token_w32() to assist
+	in parsing code in read.c.
+
+	* read.c: W32: Fixes similar to MSDOS which allow colon to
+	appear in filenames. Use of colon in filenames would otherwise
+	confuse make.
+
+	* remake.c: W32: Added include of io.h to eliminate compiler
+	warnings. Added some code to default LIBDIR if it is not set
+	on W32.
+
+	* variable.c: W32: Added support for detecting Path/PATH
+	and converting them to semicolon separated lists for make's
+	internal use. New function sync_Path_environment()
+	which is called in job.c and function.c before creating a new
+	process. Caller must set Path in environment since we don't
+	have fork() to do this for us.
+
+	* vpath.c: W32: Added detection for filenames containing
+	forward or backward slashes.
+
+	* NMakefile: W32: Visual C compatible makefile for use with nmake.
+	Use this to build GNU make the first time on Windows NT or Windows 95.
+
+	* README.W32: W32: Contains some helpful notes.
+
+	* build_w32.bat: W32: If you don't like nmake, use this the first
+	time you build GNU make on Windows NT or Windows 95.
+
+	* config.h.W32: W32 version of config.h
+
+	* subproc.bat: W32: A bat file used to build the
+	subproc library from the top-level NMakefile. Needed because
+	WIndows 95 (nmake) doesn't allow you to cd in a make rule.
+
+	* w32/include/dirent.h
+	* w32/compat/dirent.c: W32: opendir, readdir, closedir, etc.
+
+	* w32/include/pathstuff.h: W32: used by files needed functions
+	defined in pathstuff.c (prototypes).
+
+	* w32/include/sub_proc.h: W32: prototypes for subproc.lib functions.
+
+	* w32/include/w32err.h: W32: prototypes for w32err.c.
+
+	* w32/pathstuff.c: W32: File and Path/Path conversion functions.
+
+	* w32/subproc/build.bat: W32: build script for subproc library
+	if you don't wish to use nmake.
+
+	* w32/subproc/NMakefile: W32: Visual C compatible makefile for use
+	with nmake. Used to build subproc library.
+
+	* w32/subproc/misc.c: W32: subproc library support code
+	* w32/subproc/proc.h: W32: subproc library support code
+	* w32/subproc/sub_proc.c: W32: subproc library source code
+	* w32/subproc/w32err.c: W32: subproc library support code
+
+Mon May 13 14:37:42 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* Version 3.74.4.
+
+	* GNUmakefile (vmsfiles): Fix typo.
+
+	* GNUmakefile (amigafiles): Add amiga.h.
+
+Sun May 12 19:19:43 1996  Aaron Digulla   <digulla@fh-konstanz.de>
+
+	* dir.c: New function: amigafy() to fold filenames
+	Changes HASH() to HASHI() to fold filenames on Amiga.
+	Stringcompares use strieq() instead of streq()
+	The current directory on Amiga is "" instead of "."
+	* file.c: Likewise.
+
+	* amiga.c: New function wildcard_expansion(). Allows to use
+	Amiga wildcards with $(wildcard )
+
+	* amiga.h: New file. Prototypes for amiga.c
+
+	* function.c: Use special function wildcard_expansion() for
+	$(wildcard ) to allow Amiga wildcards
+	The current directory on Amiga is "" instead of "."
+
+	* job.c: No Pipes on Amiga, too
+	(load_too_high) Neither on Amiga
+	ENV variable on Amiga are in a special directory and are not
+	passed as third argument to main().
+
+	* job.h: No envp on Amiga
+
+	* make.h: Added HASHI(). This is the same as HASH() but converts
+	it's second parameter to lowercase on Amiga to fold filenames.
+
+	* main.c: (main), variable.c Changed handling of ENV-vars. Make
+	stores now the names of the variables only and reads their contents
+	when they are accessed to reflect that these variables are really
+	global (i.e., they CAN change WHILE make runs !) This handling is
+	made in lookup_variable()
+
+	* Makefile.ami: renamed file.h to filedep.h
+	Updated dependencies
+
+	* read.c: "find_semicolon" is declared as static but never defined.
+	No difference between Makefile and makefile on Amiga; added
+	SMakefile to *default_makefiles[].
+	(read_makefile) SAS/C want's two_colon and pattern_percent be set
+	before use.
+	The current directory on Amiga is "" instead of "."
+	Strange #endif moved.
+
+	* README.Amiga: updated feature list
+
+	* SMakefile: Updated dependencies
+
+	* variable.c: Handling of ENV variable happens inside lookup_variable()
+
+Sat May 11 17:58:32 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* variable.c (try_variable_definition): Count parens in lhs variable
+	refs to avoid seeing =/:=/+= inside a ref.
+
+Thu May  9 13:54:49 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* commands.c (fatal_error_signal) [SIGQUIT]: Make SIGQUIT check
+	conditional.
+
+	* main.c (main): Use unsigned for fread return.
+
+	* read.c (parse_file_seq): Use `int' for char arg to avoid widening
+	conflict issues.
+	* dep.h: Fix prototype.
+
+	* function.c (expand_function) [_AMIGA]: Fix some typos.
+	(patsubst_expand): Make len vars unsigned.
+
+	* GNUmakefile (globfiles): Add AmigaDOS support files.
+	(distfiles): Add $(amigafiles).
+	(amigafiles): New variable.
+
+Thu Nov  7 10:18:16 1995  Aaron Digulla   <digulla@fh-konstanz.de>
+
+	* Added Amiga support in commands.c, dir.c, function.c,
+	job.c, main.c, make.h, read.c, remake.c
+	* commands.c: Amiga has neither SIGHUP nor SIGQUIT
+	* dir.c: Amiga has filenames with Upper- and Lowercase,
+	but "FileName" is the same as "filename". Added strieq()
+	which is use to compare filenames. This is like streq()
+	on all other systems. Also there is no such thing as
+	"." under AmigaDOS.
+	* function.c: On Amiga, the environment is not passed as envp,
+	there are no pipes and Amiga can't fork. Use my own function
+	to create a new child.
+	* job.c: default_shell is "" (The system automatically chooses
+	a shell for me). Have to use the same workaround as MSDOS for
+	running batch commands. Added HAVE_SYS_PARAM_H. NOFILE isn't
+	known on Amiga. Cloned code to run children from MSDOS. Own
+	version of sh_chars[] and sh_cmds[]. No dup2() or dup() on Amiga.
+	* main.c: Force stack to 20000 bytes. Read environment from ENV:
+	device. On Amiga, exec_command() does return, so I exit()
+	afterwards.
+	* make.h: Added strieq() to compare filenames.
+	* read.c: Amiga needs special extension to have passwd. Only
+	one include-dir. "Makefile" and "makefile" are the same.
+	Added "SMakefile".  Added special code to handle device names (xxx:)
+	and "./" in rules.
+	* remake.c: Only one lib-dir. Amiga link-libs are named "%s.lib"
+	instead of "lib%s.a".
+	* main.c, rule.c, variable.c: Avoid floats at all costs.
+	* vpath.c: Get rid of as many alloca()s as possible.
+
+Thu May  9 13:20:43 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* read.c (read_makefile): Grok `sinclude' as alias for `-include'.
+
+Wed Mar 20 09:52:27 1996  Roland McGrath  <roland@charlie-brown.gnu.ai.mit.edu>
+
+	* GNUmakefile (vmsfiles): New variable.
+	(distfiles): Include $(vmsfiles).
+
+Tue Mar 19 20:21:34 1996  Roland McGrath  <roland@charlie-brown.gnu.ai.mit.edu>
+
+	Merged VMS port from Klaus Kaempf <kkaempf@didymus.rmi.de>.
+	* make.h (PARAMS): New macro.
+	* config.h-vms: New file.
+	* makefile.com: New file.
+	* makefile.vms: New file.
+	* readme.vms: New file.
+	* vmsdir.h: New file.
+	* vmsfunctions.c: New file.
+	* vmsify.c: New file.
+	* file.h: Renamed to filedef.h to avoid conflict with VMS system hdr.
+	* ar.c: Added prototypes and changes for VMS.
+	* commands.c: Likewise.
+	* commands.h: Likewise.
+	* default.c: Likewise.
+	* dep.h: Likewise.
+	* dir.c: Likewise.
+	* expand.c: Likewise.
+	* file.c: Likewise.
+	* function.c: Likewise.
+	* implicit.c: Likewise.
+	* job.c: Likewise.
+	* job.h: Likewise.
+	* main.c: Likewise.
+	* make.h: Likewise.
+	* misc.c: Likewise.
+	* read.c: Likewise.
+	* remake.c: Likewise.
+	* remote-stub.c: Likewise.
+	* rule.c: Likewise.
+	* rule.h: Likewise.
+	* variable.c: Likewise.
+	* variable.h: Likewise.
+	* vpath.c: Likewise.
+	* compatMakefile (srcs): Rename file.h to filedef.h.
+
+Sat Aug 19 23:11:00 1995  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* remake.c (check_dep): For a secondary file, try implicit and
+	default rules if appropriate.
+
+Wed Aug  2 04:29:42 1995  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* remake.c (check_dep): If an intermediate file exists,
+	do consider its actual date.
+
+Sun Jul 30 00:49:53 1995  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* file.h (struct file): New field `secondary'.
+	* file.c (snap_deps): Check for .INTERMEDIATE and .SECONDARY.
+	(remove_intermediates): Don't delete .SECONDARY files.
+
+Sat Mar  2 16:26:52 1996  Roland McGrath  <roland@charlie-brown.gnu.ai.mit.edu>
+
+	* compatMakefile (srcs): Add getopt.h; prepend $(srcdir)/ to getopt*.
+
+Fri Mar  1 12:04:47 1996  Roland McGrath  <roland@charlie-brown.gnu.ai.mit.edu>
+
+	* Version 3.74.3.
+
+	* remake.c (f_mtime): Move future modtime check before FILE is
+	clobbered by :: loop.
+
+	* dir.c: Use canonical code from autoconf manual for dirent include.
+	[_D_NAMLEN]: Redefine NAMLEN using this.
+	(dir_contents_file_exists_p): Use NAMLEN macro.
+	(read_dirstream) [_DIRENT_HAVE_D_NAMLEN]: Only set d_namlen #if this.
+
+	* compatMakefile (objs): Add missing backslash.
+
+Wed Feb 28 03:56:20 1996  Roland McGrath  <roland@charlie-brown.gnu.ai.mit.edu>
+
+	* default.c (default_terminal_rules): Remove + prefix from RCS cmds.
+	(default_variables): Put + prefix in $(CHECKOUT,v) value instead.
+
+	* remake.c (f_mtime): Check for future timestamps; give error and mark
+	file as "failed to update".
+
+Fri Jan 12 18:09:36 1996  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* job.c: Don't declare unblock_sigs; job.h already does.
+
+Sat Jan  6 16:24:44 1996  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* acconfig.h (HAVE_SYSCONF_OPEN_MAX): #undef removed.
+
+	* job.c (NGROUPS_MAX): Don't try to define this macro.
+
+Fri Dec 22 18:44:44 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* compatMakefile (GETOPT, GETOPT_SRC, GLOB): Variables removed.
+	(objs, srcs): Include their values here instead of references.
+
+Thu Dec 14 06:21:29 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.74.2.
+
+	* job.c (reap_children): Call unblock_sigs after start_job_command.
+
+Thu Dec 14 07:22:03 1995  Roland McGrath  <roland@duality.gnu.ai.mit.edu>
+
+	* dir.c (dir_setup_glob): Don't use lstat; glob never calls it anyway.
+	Avoid & before function names to silence bogus sunos4 compiler.
+
+	* configure.in: Remove check for `sysconf (_SC_OPEN_MAX)'.
+
+Tue Dec 12 00:48:42 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.74.1.
+
+	* dir.c (read_dirstream): Fix braino: fill in the buffer when not
+	reallocating it!
+
+Mon Dec 11 22:26:15 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* misc.c (collapse_continuations): Fix skipping of trailing \s so
+	it can never dereference before the beginning of the array.
+
+	* read.c (find_semicolon): Function removed.
+	(read_makefile): Don't use find_semicolon or remove_comments for
+	rule lines.  Use find_char_unquote directly and handle quoted comments
+	properly.
+
+	* default.c: Remove all [M_XENIX] code.
+
+	* dir.c [HAVE_D_NAMLEN]: Define this for __GNU_LIBRARY__ > 1.
+	(D_NAMLEN): Macro removed.
+	(FAKE_DIR_ENTRY): New macro.
+	(dir_contents_file_exists_p): Test HAVE_D_NAMLEN instead of using
+	D_NAMLEN.
+	(read_dirstream): Return a struct dirent * for new glob interface.
+	(init_dir): Function removed.
+	(dir_setup_glob): New function.
+	* main.c (main): Don't call init_dir.
+	* read.c (multi_glob): Call dir_setup_glob on our glob_t and use
+	GLOB_ALTDIRFUNC flag.
+
+	* misc.c (safe_stat): Function removed.
+	* read.c, commands.c, remake.c, vpath.c: Use plain stat instead of
+	safe_stat.
+
+Sat Nov 25 20:35:18 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* job.c [HAVE_UNION_WAIT]: Include sys/wait.h.
+
+	* main.c (log_working_directory): Made global.
+	Print entering msg only once.
+	* make.h (log_working_directory): Declare it.
+	* misc.c (message): Take new arg PREFIX.  Print "make: " only if
+	nonzero.  Call log_working_directory.
+	* remake.c: Pass new arg in `message' calls.
+	* job.c (start_job_command): Pass new arg to `message'; fix
+	inverted test in that call.
+
+Tue Nov 21 19:01:12 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* job.c (start_job_command): Use `message' to print the command,
+	and call it with null if the command is silent.
+	* remake.c (touch_file): Use message instead of printf.
+
+Tue Oct 10 14:59:30 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* main.c (enter_command_line_file): Barf if NAME is "".
+
+Sat Sep  9 06:33:20 1995  Roland McGrath  <roland@whiz-bang.gnu.ai.mit.edu>
+
+	* commands.c (delete_target): Ignore unlink failure if it is ENOENT.
+
+Thu Aug 17 15:08:57 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* configure.in: Don't check for getdtablesize.
+	* job.c (getdtablesize): Remove decls and macros.
+
+Thu Aug 10 19:10:03 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* main.c (define_makeflags): Omit command line variable
+ 	definitions from MFLAGS value.
+
+	* arscan.c (ar_scan) [AIAMAG]: Check for zero MEMBER_OFFSET,
+ 	indicating a valid, but empty, archive.
+
+Mon Aug  7 15:40:03 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* dir.c (file_impossible_p): Correctly reset FILENAME to name
+ 	within directory before hash search.
+
+	* job.c (child_error): Do nothing if IGNORED under -s.
+
+	* job.c (exec_command): Correctly use ARGV[0] for script name when
+ 	running shell directly.
+
+Tue Aug  1 14:39:14 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* job.c (child_execute_job): Close STDIN_FD and STDOUT_FD after
+ 	dup'ing from them.  Don't try to close all excess descriptors;
+ 	getdtablesize might return a huge value.  Any open descriptors in
+ 	the parent should have FD_CLOEXEC set.
+	(start_job_command): Set FD_CLOEXEC flag on BAD_STDIN descriptor.
+
+Tue Jun 20 03:47:15 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* read.c (read_all_makefiles): Properly append default makefiles
+ 	to the end of the `read_makefiles' chain.
+
+Fri May 19 16:36:32 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.74 released.
+
+Wed May 10 17:43:34 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.73.3.
+
+Tue May  9 17:15:23 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* compatMakefile ($(infodir)/make.info): Make sure $$dir is set in
+ 	install-info cmd.
+
+Wed May  3 15:56:06 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* file.c (print_file): Grok update_status of 1 for -q.
+
+Thu Apr 27 12:39:35 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.73.2.
+
+Wed Apr 26 17:15:57 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* file.c (remove_intermediates): Fix inverted test to bail under
+ 	-n for signal case.  Bail under -q or -t.
+	Skip files with update_status==-1.
+
+	* job.c (job_next_command): Skip empty lines.
+	(new_job): Don't test the return of job_next_command.
+	Just let start_waiting_job handle the case of empty commands.
+
+Wed Apr 19 03:25:54 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* function.c [__MSDOS__]: Include <fcntl.h>.  From DJ Delorie.
+
+	* Version 3.73.1.
+
+Sat Apr  8 14:53:24 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* remake.c (notice_finished_file): Set FILE->update_status to zero
+ 	if it's -1.
+
+Wed Apr  5 00:20:24 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.73 released.
+
+Tue Mar 28 13:25:46 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* main.c (main): Fixed braino in assert.
+
+	* Version 3.72.13.
+
+Mon Mar 27 05:29:12 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* main.c: Avoid string in assert expression.  Some systems are broken.
+
+Fri Mar 24 00:32:32 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* main.c (main): Handle 1 and 2 returns from update_goal_chain
+ 	makefile run properly.
+
+	* Version 3.72.12.
+
+	* main.c (handle_non_switch_argument): New function, broken out of
+ 	decode_switches.
+	(decode_switches): Set optind to 0 to reinitialize getopt, not to 1.
+	When getopt_long returns EOF, break the loop and handle remaining args
+ 	with a simple second loop.
+
+	* remake.c (remake_file): Set update_status to 2 instead of 1 for
+ 	no rule to make.  Mention parent (dependent) in error message.
+	(update_file_1): Handle FILE->update_status == 2 in -d printout.
+	* job.c (start_job_command, reap_children): Set update_status to 2
+ 	instead of 1 for failed commands.
+
+Tue Mar 21 16:23:38 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* job.c (search_path): Function removed (was already #if 0'd out).
+	* configure.in: Remove AC_TYPE_GETGROUPS; nothing needs it any more.
+
+Fri Mar 17 15:57:40 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* configure.bat: Write @CPPFLAGS@ translation.
+
+Mon Mar 13 00:45:59 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* read.c (parse_file_seq): Rearranged `l(a b)' -> `l(a) l(b)' loop
+ 	to not skip the elt immediately preceding `l(...'.
+
+Fri Mar 10 13:56:49 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.72.11.
+
+	* read.c (find_char_unquote): Make second arg a string of stop
+ 	chars instead of a single stop char.  Stop when any char in the
+ 	string is hit.  All callers changed.
+	(find_semicolon): Pass stop chars "#;" to one find_char_unquote call,
+	instead of using two calls.  If the match is not a ; but a #,
+ 	return zero.
+	* misc.c: Changed find_char_unquote callers here too.
+
+	* Version 3.72.10.
+
+	* read.c (read_makefile, parse_file_seq): Fix typo __MS_DOS__ ->
+ 	__MSDOS__.
+
+	* GNUmakefile (globfiles): Add glob/configure.bat.
+	(distfiles): Add configh.dos, configure.bat.
+
+Wed Mar  8 13:10:57 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	Fixes for MS-DOS from DJ Delorie.
+	* read.c (read_makefile, parse_file_seq) [__MS_DOS__]: Don't see :
+ 	as separator in "C:\...".
+	* configh.dos (STDC_HEADERS): Define only if undefined.
+	(HAVE_SYS_PARAM_H): Don't define this.
+	(HAVE_STRERROR): Define this.
+	* job.c (construct_command_argv_internal) [__MSDOS__]: Fix typos.
+
+	* Version 3.72.9.
+
+	* main.c (decode_switches): Reset optind to 1 instead of 0.
+
+Tue Mar  7 17:31:06 1995  Roland McGrath  <roland@geech.gnu.ai.mit.edu>
+
+	* main.c (decode_switches): If non-option arg is "-", ignore it.
+
+Mon Mar  6 23:57:38 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.72.8.
+
+Wed Feb 22 21:26:36 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.72.7.
+
+Tue Feb 21 22:10:43 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* main.c (main): Pass missing arg to tmpnam.
+
+	* configure.in: Check for strsignal.
+	* job.c (child_error): Use strsignal.
+	* main.c (main): Don't call signame_init #ifdef HAVE_STRSIGNAL.
+
+	* misc.c (strerror): Fix swapped args in sprintf.
+
+Mon Feb 13 11:50:08 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* configure.in (CFLAGS, LDFLAGS): Don't set these variables.
+
+Fri Feb 10 18:44:12 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* main.c (print_version): Add 95 to copyright years.
+
+	* Version 3.72.6.
+
+	* job.c (start_job_command): Remember to call notice_finished_file
+ 	under -n when not recursing.  To do this, consolidate that code
+ 	under the empty command case and goto there for the -n case.
+
+Tue Feb  7 13:36:03 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* make.h [! STDC_HEADERS]: Don't declare qsort.  Sun headers
+ 	declare it int.
+
+Mon Feb  6 17:37:01 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* read.c (read_makefile): For bogus line starting with tab, ignore
+ 	it if blank after removing comments.
+
+	* main.c: Cast results of `alloca' to `char *'.
+	* expand.c: Likewise.
+
+Sun Feb  5 18:35:46 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.72.5.
+
+	* configure.in: Check for mktemp.
+	* main.c (main) [! HAVE_MKTEMP]: Use tmpnam instead of mktemp.
+
+	* configure.in (make_cv_sysconf_open_max): New check for `sysconf
+ 	(_SC_OPEN_MAX)'.
+	* acconfig.h: Added #undef HAVE_SYSCONF_OPEN_MAX.
+	* job.c [HAVE_SYSCONF_OPEN_MAX] (getdtablesize): Define as macro
+ 	using sysconf.
+
+Fri Jan 27 04:42:09 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* remake.c (update_file_1): When !MUST_MAKE, don't set
+ 	FILE->update_status to zero before calling notice_finished_file.
+	(notice_finished_file): Touch only when FILE->update_status is zero.
+	(remake_file): Set FILE->update_status to zero after not calling
+	execute_file_command and deciding to touch instead.
+
+Thu Jan 26 01:29:32 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* main.c (debug_signal_handler): New function; toggles debug_flag.
+	(main): Handle SIGUSR1 with that.
+
+Mon Jan 16 15:46:56 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* compatMakefile (realclean): Remove Info files.
+
+Sun Jan 15 08:23:09 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.72.4.
+
+	* job.c (start_job_command): Save and restore environ around vfork
+        call.
+	(search_path): Function #if 0'd out.
+	(exec_command): Use execvp instead of search_path.
+
+	* expand.c (variable_expand): Rewrote computed variable name and
+	substitution reference handling to be simpler.  First expand the
+	entire text between the parens if it contains any $s, then examine
+	the result of that for subtitution references and do no further
+	expansion while parsing them.
+
+	* job.c (construct_command_argv_internal): Handle " quoting too,
+	when no backslash, $ or ` characters appear inside the quotes.
+
+	* configure.in (union wait check): If WEXITSTATUS and WTERMSIG are
+        defined, just use int.
+
+Tue Jan 10 06:27:27 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* default.c (default_variables) [__hpux]: Remove special
+	definition of ARFLAGS.  Existence of the `f' flag is not
+	consistent across HPUX versions; and one might be using GNU ar
+	anyway.
+
+	* compatMakefile (clean): Don't remove Info files.
+
+	* compatMakefile (check): Remove gratuitous target declaration.
+
+Sat Jan  7 11:38:23 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* compatMakefile (ETAGS, CTAGS): Don't use -t.
+
+	* arscan.c (ar_name_equal) [cray]: Subtract 1 like [__hpux].
+
+	* main.c (decode_switches): For --help, print usage to stdout.
+
+Mon Dec  5 12:42:18 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.72.3.
+
+	* remake.c (update_file_1): Do set_command_state (FILE,
+	cs_not_started) only if old state was deps_running.
+
+Mon Nov 28 14:24:03 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* job.c (start_waiting_job): Use set_command_state.
+
+	* build.template (CPPFLAGS): New variable.
+	(prefix, exec_prefix): Set from @...@.
+	(compilation loop): Pass $CPPFLAGS to compiler.
+
+	* GNUmakefile (build.sh.in): Make it executable.
+
+	* GNUmakefile (globfiles): Add configure.in, configure.
+
+	* Version 3.72.2.
+
+	* configure.in (AC_OUTPUT): Don't write glob/Makefile.
+
+	* configure.in (AC_CHECK_SYMBOL): Use AC_DEFINE_UNQUOTED.
+
+	* configure.in: Don't check for ranlib.
+
+Tue Nov 22 22:42:40 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* remake.c (notice_finished_file): Only mark also_make's as
+	updated if really ran cmds.
+
+Tue Nov 15 06:32:46 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* configure.in: Put dnls before random whitespace.
+
+Sun Nov 13 05:02:25 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* compatMakefile (CPPFLAGS): New variable, set from @CPPFLAGS@.
+	(RANLIB): Variable removed.
+	(prefix, exec_prefix): Set these from @...@.
+	(.c.o): Use $(CPPFLAGS).
+	(glob/libglob.a): Don't pass down variables to sub-make.
+	glob/Makefile should be configured properly by configure.
+	(distclean): Remove config.log and config.cache (autoconf stuff).
+
+Mon Nov  7 13:58:06 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* acconfig.h: Add #undef HAVE_UNION_WAIT.
+	* configure.in: Converted to Autoconf v2.
+	* dir.c: Test HAVE_DIRENT_H, HAVE_SYS_DIR_H, HAVE_NDIR_H instead
+	of DIRENT, SYSDIR, NDIR.
+	* build.sh.in (prefix, exec_prefix): Set these from @...@.
+	(CPPFLAGS): New variable, set from @CPPFLAGS@.
+	(compiling loop): Pass $CPPFLAGS before $CFLAGS.
+	* install.sh: File renamed to install-sh.
+
+	* main.c (define_makeflags): When no flags, set WORDS to zero.
+
+Sun Nov  6 18:34:01 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.72.1.
+
+	* main.c (define_makeflags): Terminate properly when FLAGSTRING is
+        empty.
+
+Fri Nov  4 16:02:51 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.72.
+
+Tue Nov  1 01:18:10 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.71.5.
+
+	* job.c (start_job_command): When ARGV is nil, only set
+	update_state and call notice_finished_file if job_next_command
+	returns zero.
+
+	* job.c (start_job_command): Call notice_finished_file for empty
+        command line.
+
+Thu Oct 27 02:02:45 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* file.c (snap_deps): Set COMMANDS_SILENT for .SILENT, not
+        COMMANDS_NOERROR.
+
+Wed Oct 26 02:14:10 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.71.4.
+
+Tue Oct 25 22:49:24 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* file.c (snap_deps): Set command_flags bits in all :: entries.
+
+Mon Oct 24 18:47:50 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* make.h (posix_pedantic): Declare it.
+	* main.c (main): Move checks .IGNORE, .SILENT, .POSIX to
+        snap_deps.
+	* file.c (snap_deps): Check .IGNORE, .SILENT, .POSIX here instead
+	of in main.  If .IGNORE has deps, OR COMMANDS_NOERROR into their
+	command_flags and don't set -i.  Likewise .SILENT.
+	* job.c (start_job_command): In FLAGS initialization, OR in
+	CHILD->file->command_flags.
+	* file.h (struct file): New member `command_flags'.
+
+Sun Oct 16 01:01:51 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* main.c (switches): Bump flag values for --no-print-directory and
+	--warn-undefined-variables, so neither is 1 (which indicates a
+	nonoption argument).
+
+Sat Oct 15 23:39:48 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* main.c (main): Add missing code in .IGNORE test.
+
+Mon Oct 10 04:09:03 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* variable.c (define_automatic_variables): Define +D and +F.
+
+Sat Oct  1 04:07:48 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* main.c (main): Define hidden automatic variable with command
+	vars, and MAKEOVERRIDES to a reference to that.
+	(define_makeflags): If posix_pedantic, write a reference to that
+	instead.
+
+Thu Sep 29 00:14:26 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* main.c (posix_pedantic): New variable.
+	(main): Set posix_pedantic if .POSIX is a target.
+	Fix .IGNORE and .SILENT checks to require is_target.
+
+	* commands.c (set_file_variables): Define new automatic variable
+	$+, like $^ but before calling uniquize_deps.
+
+	* job.c (reap_children): Call delete_child_targets for non-signal
+	error if .DELETE_ON_ERROR is a target.
+
+Tue Sep 27 01:57:14 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.71.3.
+
+Mon Sep 26 18:16:55 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* job.c (reap_children): Don't change C->file->command_state when
+	dying.  Test it only after calling start_job_command for a new
+	command line.  When no more cmds, just set C->file->update_status.
+	(start_job_command): When the last line is empty or under -n, set
+	C->file->update_status.
+	(start_waiting_job): Grok cs_not_started after start_job_command
+	as success.
+	(new_job): Set C->file->update_status when there are no cmds.
+	(job_next_command): When out of lines, don't set
+	CHILD->file->update_status or CHILD->file->command_state.
+
+	* main.c (quote_as_word): Renamed from shell_quote.  Take new arg;
+	if nonzero, also double $s.
+	(main): Define MAKEOVERRIDES from command_variables here.
+	(define_makeflags): Don't use command_variables here; instead write a
+	reference $(MAKEOVERRIDES) in MAKEFLAGS.  Make vars recursive.
+
+	* dir.c [__MSDOS__]: Fixed typo.
+
+	* vpath.c (selective_vpath_search): Reset EXISTS when stat fails.
+
+Sat Sep 10 03:01:35 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* remake.c: Include <assert.h> and use assert instead of printfs
+        and abort.
+
+	* main.c (decode_switches): Loop until optind hits ARGC, not just
+	until getopt_long returns EOF.  Initialize C to zero before loop;
+	in loop if C is EOF, set optarg from ARGV[optind++], else call
+	getopt_long.
+	(decode_env_switches): Use variable_expand instead of
+	allocated_variable_expand.  Allocate a fresh buffer to copy split
+	words into; scan characters by hand to break words and
+	debackslashify.
+	(shell_quote): New function.
+	(define_makeflags): Allocate doubled space for switch args, and command
+	variable names and values; use shell_quote to quote those things.
+
+Fri Sep  9 01:37:47 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Version 3.71.2.
+
+	* acconfig.h: Add HAVE_SYS_SIGLIST and HAVE__SYS_SIGLIST.
+
+	* main.c (decode_switches): The non-option return from getopt is
+	1, not 0.
+	(command_variables): New type and variable.
+	(decode_switches, decode_env_switches): After making a variable
+	definition, record the struct variable pointer in the
+	command_variables chain.
+	(define_makeflags): If ALL, write variable definitions for
+	command_variables.
+
+	* main.c (other_args): Variable removed.
+	(goals, lastgoal): New static variables (moved from auto in main).
+	(main): Don't process OTHER_ARGS at all.
+	Don't set variable MAKEOVERRIDES at all; define MAKE to just
+        $(MAKE_COMMAND).
+	(init_switches): Prepend a - {return in order} instead of a +
+	{require order}.
+	(decode_switches): Don't set OTHER_ARGS at all.
+	Grok '\0' return from getopt_long as non-option argument; try
+	variable definition and (if !ENV) enter goal targets here.
+	(decode_env_switches): Use allocated_variable_expand to store value.
+	Use find_next_token to simplify word-splitting loop.  Don't
+	prepend a dash to uninterpreted value.  Instead, if split into
+	only one word, try variable definition and failing that prepend a
+	dash to the word and pass it to decode_switches as a single arg.
+
+Wed Sep  7 03:02:46 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* remake.c (notice_finished_file): Only recheck modtimes if
+	FILE->command_state was cs_running on entry (meaning the commands
+	actually just ran).
+	(update_file_1): Whenever we set FILE->update_status, call
+	notice_finished_file instead of just set_command_state.
+	* job.c (start_job_command): Whenever we set
+	CHILD->file->update_status, call notice_finished_file instead of
+	just set_command_state.
+
+Tue Sep  6 19:13:54 1994  Roland McGrath  <roland@geech.gnu.ai.mit.edu>
+
+	* default.c: Add missing ".
+
+	* job.c: Changed all assignments of command_state members to calls
+	to set_command_state.
+	* remake.c: Likewise.
+	* file.c (set_command_state): New function.
+	* file.h: Declare set_command_state.
+
+	* main.c (init_switches): Put a + first in options.
+
+Mon Jul 25 18:07:46 1994  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	Merge MSDOS/GO32 port from DJ Delorie <dj@ctron.com>.
+	* vpath.c: Changed all uses of ':' to PATH_SEPARATOR_CHAR.
+	* main.c (directory_before_chdir): New variable, moved out of main
+        (was local).
+	(main) [__MSDOS__]: Look for \ or : to delimit last component of
+	PROGRAM.  Don't frob ARGV[0] before setting MAKE_COMMAND variable.
+	(die): Change back to `directory_before_chdir' before dying.
+	* make.h (PATH_SEPARATOR_CHAR): New macro; differing defns for
+        [__MSDOS__] and not.
+	* job.c [__MSDOS__]: Include <process.h>.
+	[__MSDOS__] (dos_pid, dos_status, dos_bname, dos_bename,
+	dos_batch_file): New variables.
+	(reap_children) [__MSDOS__]: Don't call wait; just examine those vars.
+	(unblock_sigs) [__MSDOS__]: Do nothing.
+	(start_job_command) [__MSDOS__]: Use spawnvpe instead of vfork & exec.
+	(load_too_high) [__MSDOS__]: Always return true.
+	(search_path) [__MSDOS__]: Check for : or / in FILE to punt.
+	Use PATH_SEPARATOR_CHAR instead of ':'.
+	(construct_command_argv_internal) [__MSDOS__]: Wholly different
+	values for sh_chars and sh_cmds.  Wholly new code to handle shell
+	scripts.
+	* function.c (expand_function: `shell') [__MSDOS__]: Wholly new
+        implementation.
+	* dir.c [__MSDOS__] (dosify): New function.
+	(dir_contents_file_exists_p) [__MSDOS__]: Call it on FILENAME and
+	process the result instead of FILENAME itself.
+	(file_impossible_p) [__MSDOS__]: Likewise.
+	* default.c [__MSDOS__]: Define GCC_IS_NATIVE.
+	(default_suffix_rules) [__MSDOS__]: Use `y_tab.c' instead of `y.tab.c'.
+	(default_variables) [GCC_IS_NATIVE]: Set CC and CXX to `gcc', YACC to
+	`bison -y', and LEX to `flex'.
+	* configure.bat, configh.dos: New files.
+	* commands.c (fatal_error_signal) [__MSDOS__]: Just remove
+	intermediates and exit.
+
+	* commands.c (set_file_variables): Add parens in length
+	computation in .SUFFIXES dep loop to quiet compiler warning.  From
+	Jim Meyering.
+
+	* read.c (read_makefile): Free FILENAME if we allocated it.  From
+        Jim Meyering.
+
+Mon Jul  4 17:47:08 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* misc.c (safe_stat): New function, EINTR-safe wrapper around stat.
+	* vpath.c (selective_vpath_search): Use safe_stat in place of stat.
+	* read.c (construct_include_path): Use safe_stat in place of stat.
+	* job.c (search_path): Use safe_stat in place of stat.
+	* dir.c (find_directory): Use safe_stat in place of stat.
+	* commands.c (delete_target): Use safe_stat in place of stat.
+	* arscan.c (ar_member_touch) [EINTR]: Do EINTR looping around fstat.
+	* remake.c (name_mtime): Use safe_stat in place of stat.
+	(touch_file) [EINTR]: Do EINTR looping around fstat.
+
+Fri Jun 24 05:40:24 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): Check for a shell command first, and
+	then strip leading tabs before further checking if it's not a
+	shell command line.
+
+	* make.h [__arm]: Undefine POSIX.
+	[!__GNU_LIBRARY__ && !POSIX && !_POSIX_VERSION]: Don't declare system
+	functions that return int.
+
+	* job.c (construct_command_argv_internal): After swallowing a
+	backslash-newline combination, if INSTRING is set goto string_char
+	(new label) for normal INSTRING handling code.
+
+Sat Jun  4 01:11:20 1994  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* configure.in: Don't check for sys_siglist and _sys_siglist with
+	AC_HAVE_FUNCS.  Instead use two AC_COMPILE_CHECKs.
+
+Mon May 23 18:20:38 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.71.1 released.
+
+	* make.h [!__GNU_LIBRARY__ && !POSIX]: Also test #ifndef
+	_POSIX_VERSION for these declarations.
+
+	* misc.c [GETLOADAVG_PRIVILEGED] [POSIX]: Remove bogus #ifndefs
+	around #undefs of HAVE_SETREUID and HAVE_SETREGID.
+
+Sat May 21 16:26:38 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.71 released.
+
+	* misc.c [GETLOADAVG_PRIVILEGED] [POSIX]: Don't test [HAVE_SETUID]
+	and [HAVE_SETGID].  Every system has those, and configure doesn't
+	check for them.
+
+	* make.h [_POSIX_VERSION]: Don't #define POSIX #ifdef ultrix.
+
+	* compatMakefile (loadavg): Depend on and use loadavg.c instead of
+	getloadavg.c.
+	(loadavg.c): Link or copy it from getloadavg.c.
+	(distclean): Remove loadavg.c.
+
+Mon May 16 22:59:04 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.70.4.
+
+	* misc.c [GETLOADAVG_PRIVILEGED] [! POSIX]: Undefine HAVE_SETEUID
+	and HAVE_SETEGID.
+
+	* default.c (default_terminal_rules): In SCCS rules, put
+	$(SCCS_OUTPUT_OPTION) before $<.  On some systems -G is grokked
+	only before the file name.
+	* configure.in (SCCS_GET_MINUS_G check): Put -G flag before file name.
+
+Tue May 10 16:27:38 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (construct_command_argv_internal): Swallow
+	backslash-newline combinations inside '' strings too.
+
+Thu May  5 04:15:10 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (do_define): Call collapse_continuations on each line
+	before all else.
+
+Mon Apr 25 19:32:02 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (construct_command_argv_internal): Notice newline inside
+	'' string when RESTP is non-null.
+
+Fri Apr 22 17:33:30 1994  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.70.3.
+
+	* remake.c (update_goal_chain): Reset FILE to G->file after the
+	double-colon loop so it is never null for following code.
+
+	* read.c (read_makefile): Fix `override define' parsing to skip
+	whitespace after `define' properly.
+
+	* compatMakefile (srcdir): Define as @srcdir@; don't reference
+	$(VPATH).
+	(glob/Makefile): New target.
+
+Thu Apr 21 16:16:55 1994  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.70.2.
+
+	* misc.c (remove_comments): Use find_char_unquote.
+	* make.h (find_char_unquote): Declare it.
+	* read.c (find_char_unquote): New function, generalized from
+	find_percent.
+	(find_percent, find_semicolon, parse_file_seq): Use that.
+
+Wed Apr 20 18:42:39 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* implicit.c (pattern_search): Always allocate new storage for
+	FILE->stem.  It is not safe to store STEM's address because it
+	might be auto storage.
+
+	* configure.in: Check for seteuid and setegid.
+	* misc.c [HAVE_SETEUID]: Declare seteuid.
+	[HAVE_SETEGID]: Declare setegid.
+	(make_access, user_access) [HAVE_SETEUID]: Use seteuid.
+	[HAVE_SETEGID]: Use setegid.
+
+	* remake.c (update_goal_chain): Set STATUS to FILE->update_status,
+	to preserve whether it's 2 for error or 1 for -q trigger.  When
+	STATUS gets nonzero and -q is set, always stop immediately.
+	* main.c (main, decode_switches): Die with 2 for errors.
+	(main): Accept 2 return from update_goal_chain and die with that.
+	* misc.c (fatal, makefile_fatal): Die with 2; 1 is reserved for -q
+	answer.
+	* job.c (reap_children): Die with 2 for error.
+	(start_job_command): Set update_status to 2 for error.  Set it to
+	1 when we would run a command and question_flag is set.
+
+	* read.c (read_makefile): Don't mark makefiles as precious.  Just
+	like other targets, they can be left inconsistent and in need of
+	remaking by aborted commands.
+
+	* read.c (read_makefile): Write no error msg for -include file.
+
+Tue Apr  5 05:22:19 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* commands.c (fatal_error_signal): Don't unblock signals.
+
+	* file.h (struct file): Change member `double_colon' from flag to
+	`struct file *'.
+	* read.c (record_files): Set double_colon pointer instead of flag.
+	* main.c (main): When disqualifying makefiles for updating, use
+	double_colon pointer to find all entries for a file.
+	* file.c (enter_file): If there is already a double-colon entry
+	for the file, set NEW->double_colon to that pointer.
+	(file_hash_enter): Use FILE->double_colon to find all entries to
+	set name.
+	* remake.c (update_goal_chain): Do inner loop on double-colon entries.
+	(update_file): Use FILE->double_colon pointer to find all entries.
+	(f_mtime): Likewise.
+	(notice_finished_file): Propagate mtime change to all entries.
+
+	* variable.c (try_variable_definition): Return after abort.
+
+Fri Apr  1 18:44:15 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): Remove unused variable.
+	(parse_file_seq): When removing an elt that is just `)', properly
+	fix up the previous elt's next pointer.
+
+Mon Mar 28 18:31:49 1994  Roland McGrath  (roland@mole.gnu.ai.mit.edu)
+
+	* configure.in: Do AC_SET_MAKE.
+	* GNUmakefile (Makefile.in): Edit MAKE assignment into @SET_MAKE@.
+
+Fri Mar  4 00:02:32 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* function.c (subst_expand): If BY_WORD or SUFFIX_ONLY is set and
+	the search string is the empty string, find a match at the end of
+	each word (using end_of_token in place of sindex).
+
+	* misc.c (end_of_token): Don't treat backslashes specially; you
+	can no longer escape blanks with backslashes in export, unexport,
+	and vpath.  This was never documented anyway.
+
+Thu Mar  3 23:53:46 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): Variable name for `define' is not just
+	first token; use whole rest of line and strip trailing blanks.
+
+Wed Feb 16 16:03:45 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.70.1.
+
+	* read.c (read_makefile): Add -d msg stating args.
+
+	* read.c (read_makefile): Use isspace to skip over leading
+	whitespace, and explicitly avoid skipping over tabs.  Don't want
+	to skip just spaces though; formfeeds et al should be skipped.
+
+	* default.c (default_variables) [__hpux]: Add f in ARFLAGS.
+
+	* arscan.c (ar_name_equal) [__hpux]: Subtract 2 instead of 1 from
+	sizeof ar_name for max length to compare.
+
+	* misc.c [GETLOADAVG_PRIVILEGED] [POSIX]: Undefine HAVE_SETREUID
+	#ifdef HAVE_SETUID; likewise HAVE_SETREGID and HAVE_SETGID.
+
+	* main.c (main): Call user_access after setting `program', in case
+	it needs to use it in an error message.
+
+	* read.c (read_makefile): Ignore an empty line starting with a tab.
+
+Thu Feb 10 21:45:31 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* configure.in (AC_SYS_SIGLIST_DECLARED): Use this instead of
+	AC_COMPILE_CHECK that is now its contents.
+
+Fri Feb  4 16:28:54 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* make.h: #undef strerror after #include <string.h>.
+	[! ANSI_STRING]: Declare strerror.
+
+Thu Feb  3 02:21:22 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* misc.c (strerror): #undef any macro before function definition.
+
+Mon Jan 31 19:07:23 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* variable.c (try_variable_definition): Calculate BEG before loop
+	to strip blanks by decrementing END.  Don't decr END to before BEG.
+
+	* read.c (read_makefile): Skip over leading space characters, but
+	not tabs, after removing continuations and comments (it used to
+	use isspace).
+
+Tue Jan 25 16:45:05 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* variable.c (define_automatic_variables): In $(@D) et al, use
+	patsubst to remove trailing slash.
+
+	* commands.c (delete_target): New function, broken out of
+	delete_child_targets.  Check for archive members and give special msg.
+	(delete_child_targets): Use delete_target.
+
+Mon Jan 17 17:03:22 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* default.c (default_suffix_rules): Use $(TEXI2DVI_FLAGS) in
+	texi2dvi rules.	Use $(MAKEINFO_FLAGS) in makeinfo rules.
+
+Tue Jan 11 19:29:55 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* GNUmakefile (tarfiles): Omit make-doc.
+	(make-$(version).tar): Include make.info*.
+
+Fri Jan  7 16:27:00 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile (configure, config.h.in): Comment out rules.
+
+Thu Jan  6 18:08:08 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile (binprefix, manprefix): New variables.
+	(instname): Variable removed.
+	(install): Use $({bin,man}prefix)make in place of $(instname).
+	File targets likewised renamed.
+
+Mon Jan  3 17:50:25 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.70 released.
+
+Thu Dec 23 14:46:54 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.69.3.
+
+	* read.c (parse_file_seq): Inside multi-word archive ref
+	translation loop, check NEW1==0 at end and break out of the loop.
+
+	* GNUmakefile (make-$(version).tar): Distribute install.sh.
+	* install.sh: New file.
+
+	* configure.in (SCCS_GET_MINUS_G check): Put redirection for admin
+	cmds outside subshell parens, to avoid "command not found" msgs
+	from the shell.
+
+Wed Dec 22 17:00:43 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* configure.in (SCCS_GET_MINUS_G check): Put -G flag last in get cmd.
+	Redirect output & error from get to /dev/null.
+	Fix reversed sense of test.
+
+Fri Dec 17 15:31:36 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* configure.in (SCCS_GET_MINUS_G check): Use parens instead of
+	braces inside if condition command; some shells lose.
+
+Thu Dec 16 15:10:23 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.69.2.
+
+	* arscan.c [M_UNIX]: Move #undef M_XENIX for PORTAR stuff.
+	(PORTAR) [M_XENIX]: Define to 0 instead of 1.
+
+	* main.c (define_makeflags): Only export MAKEFLAGS if !ALL.
+
+Wed Dec 15 17:47:48 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* main.c (main): Cast result of pointer arith to unsigned int
+	before passing to define_variable for envars.  Matters when
+	sizeof(unsigned)!=sizeof(ptrdiff_t).
+
+Tue Dec 14 14:21:16 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* configure.in: Add new check for SCCS_GET_MINUS_G.
+	* config.h.in: Add #undef SCCS_GET_MINUS_G.
+	* default.c (default_terminal_rules): Use `$(SCCS_OUTPUT_OPTION)' in
+	place of `-G $@' in SCCS commands.
+	(default_variables) [SCCS_GET_MINUS_G]: Define SCCS_OUTPUT_OPTION
+	to "-G$@".
+
+	* configure.in (AC_OUTPUT): Put touch stamp-config in second arg
+	(so it goes in config.status), rather than afterward.
+
+	* ar.c (ar_member_date): Don't call enter_file on the archive file
+	if it doesn't exist (by file_exists_p).
+
+	* compatMakefile ($(infodir)/make.info): Replace `$$d/foo.info'
+	with `$$dir/make.info' in install-info invocation (oops).
+
+	* vpath.c (construct_vpath_list): Only set LASTPATH set PATH when
+	we do not unlink and free PATH.
+
+	* file.c (print_file_data_base): Fix inverted calculation for
+	average files per hash bucket.
+
+	* read.c (readline): When we see a NUL, give only a warning and
+	synthesize a newline to terminate the building line (used to
+	fatal).  Move fgets call into the loop condition, and after the
+	loop test ferror (used to test !feof in the loop).
+
+Fri Dec  3 16:40:31 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* configure.in: Check for strerror in AC_HAVE_FUNCS.
+
+Thu Dec  2 15:37:50 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	Differentiate different flavors of missing makefile error msgs,
+	removing gratuitous `fopen: ' and giving caller for included makefiles.
+	* misc.c [! HAVE_STRERROR]: Define our own strerror here.
+	(perror_with_name, pfatal_with_name): Use strerror instead of
+	replicating its functionality.
+	* read.c (read_makefile): Return int instead of void.
+	(read_all_makefiles, read_makefile): Change callers to notice zero
+	return and give error msg.
+
+Thu Nov 11 11:47:36 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.69.1.
+
+	* default.c: Put `-G $@' before $< in SCCS cmds.
+
+Wed Nov 10 06:06:14 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): After trying a variable defn, notice if
+	the line begins with a tab, and diagnose an error.
+
+Sun Nov  7 08:07:37 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.69.
+
+Wed Nov  3 06:54:33 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.68.10.
+
+	* implicit.c (try_implicit_rule): Look for a normal rule before an
+	archive rule.
+
+Fri Oct 29 16:45:28 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* function.c (expand_function: `sort'): Double NWORDS when it
+	overflows, instead of adding five.
+
+	* compatMakefile (clean): Remove loadavg.
+
+Wed Oct 27 17:58:33 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.68.9.
+
+	* file.h (NEW_MTIME): Define new macro.
+	* main.c (main): Set time of NEW_FILES to NEW_MTIME, not to
+	current time returned from system.  Removed variable NOW.
+	* remake.c (notice_finished_file): Use NEW_MTIME in place of
+	current time here too.
+
+Tue Oct 26 19:45:35 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.68.8.
+
+	* remake.c (update_file_1): Don't clear MUST_MAKE when FILE has no
+	cmds and !DEPS_CHANGED unless also !NOEXIST.
+
+Mon Oct 25 15:25:21 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (parse_file_seq): When converting multi-word archive
+	refs, ignore a word beginning with a '('.
+
+Fri Oct 22 02:53:38 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* configure.in: Check for sys/timeb.h.
+	* make.h [HAVE_SYS_TIMEB_H]: Test this before including it.
+
+Thu Oct 21 16:48:17 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.68.7.
+
+	* rule.c (convert_suffix_rule): New local TARGPERCENT.  Set it to
+	TARGNAME+1 for "(%.o)", to TARGNAME for "%.?".  Use it in place of
+	TARGNAME to initialize PERCENTS[0].
+
+Mon Oct 18 06:49:35 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* configure.in: Use AC_HAVE_HEADERS(unistd.h) instead of AC_UNISTD_H.
+	Remove AC_USG; it is no longer used.
+
+	* file.c (print_file): New function, broken out of
+	print_file_data_base.
+	(print_file_data_base): Call it.
+	* rule.c (print_rule): New function, broken out of
+	print_rule_data_base.
+	(print_rule_data_base): Call it.
+
+Thu Oct 14 14:54:03 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* default.c (install_default_suffix_rules): New function, broken
+	out of install_default_implicit_rules.
+	(install_default_implicit_rules): Move suffix rule code there.
+	* make.h: Declare install_default_suffix_rules.
+	* main.c (main): Call install_default_suffix_rules before reading
+	makefiles.  Move convert_to_pattern call before
+	install_default_implicit_rules.
+
+	* job.h (struct child): Make `pid' member type `pid_t' instead of
+	`int'.
+
+	* compatMakefile (RANLIB): New variable, set by configure.
+	(glob/libglob.a): Pass RANLIB value down to submake.
+
+	Fixes for SCO 3.2 "devsys 4.2" from pss@tfn.com (Peter Salvitti).
+	* make.h: Include <sys/timeb.h> before <time.h> for SCO lossage.
+	* job.c [! getdtablesize] [! HAVE_GETDTABLESIZE]: If NOFILE is not
+	defined but NOFILES_MAX is, define it to be that.
+
+Mon Oct 11 19:47:33 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* GNUmakefile (make-$(version).tar): Depend on acconfig.h, so it
+	is distributed.
+
+Sun Oct  3 15:15:33 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* default.c (default_terminal_rules): Add `-G $@' to SCCS get cmds.
+
+Tue Sep 28 14:18:20 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (construct_command_argv_internal): Add ^ to SH_CHARS; it
+	is another symbol for | in some shells.
+	* main.c (main): Add it to CMD_DEFS quoting list as well.
+
+Mon Sep 20 18:05:24 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (construct_command_argv_internal): Remove '=' from
+	SH_CHARS.  Only punt on '=' if it is unquoted in a word before the
+	first word without an unquoted '='.
+
+	* main.c (define_makeflags): Set v_export for MAKEFLAGS.
+
+Fri Sep 17 00:37:18 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* remake.c (update_file_1): Use .DEFAULT cmds for phony targets.
+
+	* make.h [_AIX && _POSIX_SOURCE]: Define POSIX.
+
+	* commands.c (delete_child_targets): Don't delete phony files.
+
+	* job.c (start_job_command): Set COMMANDS_RECURSE in FLAGS if we
+	see a `+' at the beginning of the command line.
+
+Thu Sep  9 17:57:14 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.68.6.
+
+Wed Sep  8 20:14:21 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* main.c (define_makeflags): Define MAKEFLAGS with o_file, not o_env.
+
+Mon Aug 30 12:31:58 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* expand.c (variable_expand): Fatal on an unterminated reference.
+
+Thu Aug 19 16:27:53 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.68.5.
+
+	* variable.c (define_automatic_variables): Define new o_default
+	variable `MAKE_VERSION' from version_string and remote_description.
+
+	* make.h (version_string, remote_description): Declare these here.
+	* main.c: Don't declare version_string.
+	(print_version): Don't declare remote_description.
+
+Wed Aug 18 15:01:24 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): Free space pointed to by CONDITIONALS
+	before restoring the old pointer.
+
+Mon Aug 16 17:33:36 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile ($(objs)): Depend on config.h.
+
+	* GNUmakefile (build.sh.in): Depend on compatMakefile.
+
+	* configure.in: Touch stamp-config after AC_OUTPUT.
+
+Fri Aug 13 16:04:22 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.68.4.
+
+Thu Aug 12 17:18:57 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* make.h: Include <config.h> instead of "config.h".
+
+Wed Aug 11 02:35:25 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* main.c (main): Make all variables interned from ENVP be v_export.
+	* variable.c (try_variable_definition): In v_default case, don't
+	check for an o_file variable that `getenv' finds.
+
+	* job.c (reap_children): New local variable ANY_LOCAL; set it
+	while setting ANY_REMOTE.  If !ANY_LOCAL, don't wait for local kids.
+
+	* main.c (main): Don't call decode_env_switches on MFLAGS.  DOC THIS.
+
+	* function.c (expand_function): #if 0 out freeing of ENVP since it
+	is environ.
+
+Mon Aug  9 17:37:20 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.68.3.
+
+	* remote-stub.c (remote_status): Set errno to ECHILD before return.
+	* job.c (reap_children): Scan the chain for remote children and
+	never call remote_status if there are none.
+
+	* function.c (expand_function: `shell'): #if 0 out calling
+	target_environment; just set ENVP to environ instead.
+
+	* job.c (reap_children): Check for negative return from
+	remote_status and fatal for it.
+	When blocking local child wait returns 0, then try a blocking call
+	to remote_status.
+
+Tue Aug  3 00:19:00 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile (clean): Delete make.info* and make.dvi here.
+	(distclean): Not here.
+
+	* dep.h (RM_*): Use #defines instead of enum to avoid lossage from
+	compilers that don't like enum values used as ints.
+
+Mon Aug  2 16:46:34 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile (loadavg): Add $(LOADLIBES).
+
+Sun Aug  1 16:01:15 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.68.2.
+
+	* compatMakefile (loadavg, check-loadavg): New targets.
+	(check): Depend on check-loadavg.
+
+	* compatMakefile (glob/libglob.a): Depend on config.h.
+
+	* misc.c (log_access): Write to stderr instead of stdout.
+
+Fri Jul 30 00:07:02 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.68.1.
+
+Thu Jul 29 23:26:40 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* configure.in (SYS_SIGLIST_DECLARED): In test program include
+	<unistd.h> #ifdef HAVE_UNISTD_H.
+
+	* compatMakefile (.PHONY): Put after `all' et al.
+
+	* configure.in: Add AC_IRIX_SUN.
+
+Wed Jul 28 17:41:12 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.68.
+
+Mon Jul 26 14:36:49 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.67.8.
+
+Sun Jul 25 22:09:08 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.67.7.
+
+	* compatMakefile ($(infodir)/make.info): Don't use $(instname).
+	Run install-info script if present.
+
+Fri Jul 23 16:03:50 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* make.h [STAT_MACROS_BROKEN]: Test this instead of [uts].
+
+	* configure.in: Add AC_STAT_MACROS_BROKEN.
+
+Wed Jul 14 18:48:11 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.67.6.
+
+	* read.c (read_makefile): Recognize directive `-include', like
+	`include' but sets RM_DONTCARE flag.
+
+	* variable.c (target_environment): If FILE is nil, use
+	current_variable_set_list in place of FILE->variables.
+	* function.c (expand_function: `shell'): Get an environment for
+	the child from target_environment instead of using environ.
+
+	* dep.h: Declare read_all_makefiles here.
+	(RM_*): Define new enum constants.
+	* read.c (read_makefile): Second arg is FLAGS instead of TYPE.
+	Treat it as a bit mask containing RM_*.
+	(read_all_makefiles): For default makefiles, set D->changed to
+	RM_DONTCARE instead of 1.
+	* main.c: Don't declare read_all_makefiles here.
+	(main): Check `changed' member of read_makefiles elts for RM_*
+	flags instead of specific integer values.
+
+Mon Jul 12 22:42:17 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* make.h [sequent && i386]: #undef POSIX.  From trost@cse.ogi.edu.
+
+Thu Jul  8 19:51:23 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* vpath.c (construct_vpath_list): If ELEM is zero 0, free PATTERN
+	as well as VPATH.
+	(build_vpath_lists): Empty `vpaths' around construct_vpath_list
+	call for $(VPATH).  Expand $(strip $(VPATH)), not just $(VPATH).
+
+	* rule.c (convert_suffix_rule): Use alloca instead of xmalloc for
+	PERCENTS, whose storage is not consumed by create_pattern_rule.
+
+	* make.h [__mips && _SYSTYPE_SVR3]: #undef POSIX.
+
+Wed Jun 30 18:11:40 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.67.5.
+
+	* rule.c (max_pattern_targets): New variable.
+	(count_implicit_rule_limits): Compute its value.
+	* rule.h: Declare it.
+	* implicit.c (pattern_search): Make TRYRULES max_target_patterns
+	times bigger.  Move adding new TRYRULES elt inside the inner
+	targets loop, so each matching target gets its own elt in MATCHES
+	and CHECKED_LASTSLASH.
+
+	* file.c (remove_intermediates): If SIG!=0 say `intermediate file'
+	instead of just `file' in error msg.
+
+Fri Jun 25 14:55:15 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (construct_command_argv): Turn off
+	--warn-undefined-variables around expansion of SHELL and IFS.
+	* read.c (tilde_expand): Likewise for HOME.
+	(read_all_makefiles): Likewise for MAKEFILES.
+	* vpath.c (build_vpath_lists): Likewise for VPATH.
+
+	* main.c (warn_undefined_variables_flag): New flag variable.
+	(switches): Add --warn-undefined-variables.
+	* make.h (warn_undefined_variables_flag): Declare it.
+	* expand.c (warn_undefined): New function.
+	(reference_variable): Call it if the variable is undefined.
+	(variable_expand): In substitution ref, call warn_undefined if the
+	variable is undefined.
+
+	* default.c (default_pattern_rules): Add `%.c: %.w %.ch' and
+	`%.tex: %.w %.ch' rules.
+	(default_suffix_rules: .w.c, .w.tex): Pass three args: $< - $@.
+	(default_suffixes): Add `.ch'.
+
+Mon Jun 21 17:55:39 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* default.c (default_suffixes): Replace `.cweb' with `.w'.
+	(default_suffix_rules): Rename `.cweb.c' and `.cweb.tex' to `.w.c'
+	and `.w.tex'.
+
+Fri Jun 11 14:42:09 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile ($(bindir)/$(instname)): Add missing backslash.
+
+Thu Jun 10 18:14:08 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.67.4.
+
+	* read.c (multi_glob): Don't free OLD and OLD->name in the
+	FOUND!=0 fork.  Use new block-local variable F instead of
+	clobbering OLD.
+
+	* ar.c (glob_pattern_p): New function, snarfed from glob/glob.c.
+	(ar_glob): Call it; return nil immediately if MEMBER_PATTERN
+	contains no metacharacters.
+
+Wed Jun  9 16:25:35 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* ar.c (ar_glob{_match,_alphacompare}): New function.
+
+	* dep.h [! NO_ARCHIVES]: Declare it.
+	* read.c (multi_glob) [! NO_ARCHIVES]: Use it on archive member elts.
+
+	* read.c (read_makefile): Pass flag (1) to parse_file_seq, not to
+	multi_glob (which doesn't take a 3rd arg).
+	* rule.c (install_pattern_rule): Likewise.
+	* default.c (set_default_suffixes): Here too.
+	* function.c (string_glob): Don't pass gratuitous arg to multi_glob.
+
+	* read.c (parse_file_seq) [! NO_ARCHIVES]: Add post-processing
+	loop to translate archive refs "lib(a b)" into "lib(a) lib(b)".
+
+Mon Jun  7 19:26:51 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile (installdirs): Actually pass directory names.
+	($(bindir)/$(instname)): Test chgrp&&chmod exit status with `if';
+	if it fails, echo a warning msg, but don't make the rule fail.
+
+	* read.c (tilde_expand): New function, broken out of tilde_expand.
+	(multi_glob): Call it.
+	(construct_include_path): Expand ~ in directory names.
+	* dep.h: Declare tilde_expand.
+	* main.c (enter_command_line_file): Expand ~ at the start of NAME.
+	(main): Expand ~ in -C args.
+	* read.c (read_makefile): Expand ~ in FILENAME unless TYPE==2.
+
+Fri Jun  4 13:34:47 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* main.c (decode_env_switches): Use xmalloc instead of alloca for ARGS.
+
+	* main.c (main): Put result of alloca in temporary variable with
+	simple assignment, to make SGI compiler happy.
+
+Thu Jun  3 20:15:46 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.67.3.
+
+	* main.c (main): Before re-execing, remove intermediate files, and
+	print the data base under -p.  Sexier debugging message.
+
+	* implicit.c (pattern_search): Allocate an extra copy of the name
+	of a winning intermediate file when putting it in FOUND_FILES.
+
+Wed Jun  2 16:38:08 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): Pass flag (1) to parse_file_seq, not to
+	multi_glob (which doesn't take a 3rd arg).
+
+	* dir.c (dir_contents_file_exists_p): When reading dirents, ignore
+	chars within D_NAMLEN that are NULs.
+
+	* main.c (decode_switches): Don't savestring ARGV[0] to put it
+	into `other_args'.
+	For string switch, don't savestring `optarg'.
+	(main): Don't free elts of makefiles->list that are "-".
+	Use alloca'd rather than savestring'd storage for elts of
+	makefiles->list that are temporary file names.
+	* read.c (read_all_makefiles): Don't free *MAKEFILES.
+	* file.c (enter_file): Don't strip `./'s.
+	* main.c (enter_command_line_file): New function.
+	(main): Use it in place of enter_file for command-line goals from
+	other_files, and for old_files and new_files.
+
+Mon May 31 18:41:40 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.67.2.
+
+	* compatMakefile (.SUFFIXES): Add .info.
+	($(infodir)/$(instname).info): Find make.info* in cwd if there,
+	else in $srcdir.  Use basename to remove dir name from installed name.
+
+Thu May 27 17:35:02 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* implicit.c (pattern_search): When interning FOUND_FILES, try
+	lookup_file first; if found, free the storage for our copy of the name.
+
+Wed May 26 14:31:20 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.67.1.
+
+	* main.c (decode_switches): In usage msg, write `--switch=ARG' or
+	`--switch[=OPTARG]' rather than `--switch ARG' or `--switch [ARG]'.
+
+Mon May 24 16:17:31 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* rule.c (convert_suffix_rule): New function.
+	(convert_to_pattern): Use it instead of doing all the work here
+	several times.
+	For target suffix `.a', generate both the archive magic rule and
+	the normal rule.
+
+	* compatMakefile (distclean): Remove stamp-config.
+
+Sat May 22 16:15:18 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.67.
+
+	* file.c (remove_intermediates): Don't write extra space after `rm'.
+
+	* main.c (struct command_switch.type): Remove `usage_and_exit'.
+	(print_usage_flag): New variable.
+	(switches: --help): Make type `flag', to set print_usage_flag.
+	(init_switches): Remove `usage_and_exit' case.
+	(decode_switches): Likewise.
+	(decode_switches): Print usage if print_usage_flag is set.
+	When printing usage, die with status of BAD.
+	(main): Die with 0 if print_version_flag.
+
+Fri May 21 16:09:28 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.66.
+
+Wed May 19 21:30:44 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile (installdirs): New target.
+	(install): Depend on it.
+
+Sun May 16 20:15:07 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.65.2.
+
+Fri May 14 16:40:09 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* vpath.c (construct_vpath_list): In removal loop for DIRPATH==0,
+	set LASTPATH to PATH, not NEXT.
+
+	* dir.c (read_dirstream): Break out of loop after incrementing
+	DS->buckets such that it reaches DIRFILE_BUCKETS; avoid trying to
+	dereference DS->contents->files[DIRFILE_BUCKETS].
+
+	* read.c (read_makefile): Clear no_targets after reading a
+	targetful rule line.
+
+	* main.c (main): If print_version_flag is set, exit after printing
+	the version.
+	(switches): Change --version docstring to say it exits.
+
+	* make.h [butterfly]: #undef POSIX.
+
+Wed May 12 15:20:21 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.65.1.
+
+	* arscan.c (ar_scan) [! AIAMAG]: Don't declare LONG_NAME.
+	[AIAMAG]: Pass TRUNCATE flag arg to (*FUNCTION), always zero.
+
+	* function.c (handle_function): Use fatal instead of
+	makefile_fatal when reading_filename is nil.
+
+	* configure.in: Add AC_GETGROUPS_T.
+	* job.c (search_path): Use GETGROUPS_T in place of gid_t.
+
+Sun May  9 15:41:25 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.65.
+
+Fri May  7 18:34:56 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* function.c (handle_function): Fatal for unmatched paren.
+
+Thu May  6 16:13:41 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.64.3.
+
+	* commands.c (handling_fatal_signal): New variable.
+	(fatal_error_signal): Set it.
+	* job.c (reap_children): Avoid nonreentrant operations if that is set.
+	* make.h: Declare handling_fatal_signal.
+
+	* expand.c (reference_variable): New function, snippet of code
+	broken out of simple-reference case of variable_expand.
+	(variable_expand): Use it for simple refs.
+	(variable_expand): When checking for a computed variable name,
+	notice a colon that comes before the final CLOSEPAREN.  Expand
+	only up to the colon, and then replace the pending text with a
+	copy containing the expanded name and fall through to subst ref
+	handling.
+	(variable_expand): Don't bother expanding the name if a colon
+	appears before the first $.
+	(expand_argument): Use alloca instead of savestring.
+	(variable_expand): For subst ref, expand both sides of = before
+	passing to [pat]subst_expand.  Use find_percent instead of lindex
+	to check the lhs for a %.
+
+Wed May  5 14:45:52 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.64.2.
+
+Mon May  3 17:00:32 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* arscan.c (ar_name_equal) [AIAMAG]: Abort if TRUNCATED is nonzero.
+
+	* read.c (read_makefile): Pass extra arg of 1 to parse_file_seq,
+	not to multi_glob.
+
+Thu Apr 29 19:47:33 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.64.1.
+
+	* arscan.c (ar_scan): New local flag var LONG_NAME.  Set it when
+	we read the member name in any of the fashions that allow it to be
+	arbitrarily long.  Pass its negation to FUNCTION.
+	(describe_member): Take TRUNCATED from ar_scan and print it.
+	(ar_name_equal): Take new arg TRUNCATED; if nonzero, compare only
+	the first sizeof (struct ar_hdr.ar_name) chars.
+	(ar_member_pos): Take TRUNCATED from ar_scan, pass to ar_name_equal.
+	* ar.c (ar_member_date_1): Likewise.
+
+Wed Apr 28 21:18:22 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (reap_children): Before calling start_job_command to start
+	the next command line, reset C->remote by calling start_remote_job_p.
+
+Mon Apr 26 15:56:15 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* arscan.c (ar_scan): New local var NAMEMAP.
+	In loop, rename NAME to NAMEBUF; new var NAME is a pointer; new
+	flag IS_NAMEMAP.  When extracting the member name, always put a
+	null at its end first.  If the name is "//" or "/ARFILENAMES", set
+	IS_NAMEMAP.  If we have already read in NAMEMAP, and NAME looks
+	like " /N", get full name from NAMEMAP+N.
+	Else if NAME looks like "#1/N", read N chars from the
+	elt data to be the full name.  At end of loop, if IS_NAMEMAP, read
+	the elt's data into alloca'd NAMEMAP.
+	(ar_name_equal): #if 0 truncating code.
+
+	* make.h: Don't declare vfork at all.  It returns int anyway,
+	unless <unistd.h> declared it; and we conflicted with some systems.
+
+	* main.c (define_makeflags): If FLAGSTRING[1] is '-', define
+	MAKEFLAGS to all of FLAGSTRING, not &FLAGSTRING[1].  Don't want to
+	define it to something like "-no-print-directory".
+	Use %g format instead of %f for floating-valued things.
+
+Thu Apr 22 18:40:58 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* GNUmakefile (Makefile.in): Use a substitution ref on nolib-deps
+	to change remote-%.dep to remote-stub.dep.
+
+Wed Apr 21 15:17:54 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.64.
+
+Fri Apr 16 14:22:22 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile (install): Remove - prefix from chgrp+chmod.
+
+	* Version 3.63.8.
+
+Thu Apr 15 18:24:07 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* acconfig.h: New file; contains "#undef SCCS_GET" for autoheader.
+	* configure.in: If /usr/sccs/get exists, define SCCS_GET to that,
+	else to "get".
+	* default.c (default_variables): Set GET to macro SCCS_GET.
+
+	* read.c (parse_file_seq): Take extra arg STRIP; strip `./' only
+	if nonzero.  I hope this is the last time this argument is added
+	or removed.
+	(read_makefile): Pass it 1 when parsing include file names.
+	Pass it 1 when parsing target file names.
+	Pass it 1 when parsing static pattern target pattern names.
+	* rule.c (install_pattern_rule): Pass it 1 when parsing rule deps.
+	* default.c (set_default_suffixes): Pass it 1 when parsing
+	default_suffixes.
+	* function.c (string_glob): Pass it 0 here.
+
+Wed Apr 14 11:32:05 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* misc.c (log_access): New function.
+	({init,user,make,child}_access): Call it.
+	(child_access): Abort if !access_inited.
+
+	* main.c (switches: --no-print-directory): Use 1 instead of -1 for
+	single-letter option.
+	(init_switches, decode_switches, define_makeflags): An option with
+	no single-letter version is no longer indicated by a value of -1;
+	instead a value that is !isalnum.
+	(init_switches): Don't put such switches into the string, only
+	into the long_option table.
+
+	* make.h [!NSIG] [!_NSIG]: #define NSIG 32.
+
+	* job.c [HAVE_WAITPID]: Remove #undef HAVE_UNION_WAIT.  AIX's
+	bsdcc defined WIF* to use union wait.
+
+	* main.c (struct command_switch): Change member `c' to type int.
+	(switches): Make const.
+	(decode_switches): Use `const struct command_switch *'.
+	(define_makeflags): Likewise.
+
+	* default.c (default_suffix_rules): Add `-o $@' to makeinfo rules.
+
+Mon Apr 12 12:30:04 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.63.7.
+
+	* configure.in (AC_HAVE_HEADERS): Check for string.h and memory.h.
+	Removed AC_MEMORY_H.
+	* make.h [USG, NeXT]: Don't test these.
+	[HAVE_STRING_H]: Test this to include string.h and define ANSI_STRING.
+	[HAVE_MEMORY_H]: Test this instead of NEED_MEMORY_H.
+	[! ANSI_STRING]: Put decls of bcopy et al here.
+	[sparc]: Don't test this for alloca.h; HAVE_ALLOCA_H is sufficient.
+	[HAVE_SIGSETMASK]: Test this rather than USG.
+	[__GNU_LIBRARY__ || POSIX]: Don't #include <unistd.h> again.
+	* main.c (main): Handle SIGCHLD if defined, and SIGCLD if defined.
+	It doesn't hurt to do both if they are both defined, and testing
+	USG is useless.
+	* dir.c: Rationalize directory header conditionals.
+	* arscan.c [HAVE_FCNTL_H]: Test this rather than USG || POSIX.
+
+	* default.c (default_suffixes): Add `.txinfo'.
+	(default_suffix_rules): Add `.txinfo.info' and `.txinfo.dvi' rules.
+
+	* variable.c (try_variable_definition): Replace RECURSIVE flag
+	with enum FLAVOR, which can be simple, recursive, or append.
+	Recognize += as append flavor.  Set new variable VALUE in a switch
+	on FLAVOR.  For append flavor, prepend the variable's old value.
+	If the variable was previously defined recursive, set FLAVOR to
+	recursive; if it was defined simple, expand the new value before
+	appending it to the old value.  Pass RECURSIVE flag to
+	define_variable iff FLAVOR == recursive.
+
+	* variable.c (try_variable_definition): Use alloca and bcopy for
+	NAME, instead of savestring.  Might as well use stack storage
+	since we free it immediately anyway.
+
+Thu Apr  8 18:04:43 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (start_waiting_jobs): Move decl of JOB outside of loop.
+
+	* main.c (define_makeflags): Rename `struct flag' member `switch'
+	to `cs', which is not a reserved word.
+
+Wed Apr  7 15:30:51 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (new_job): Call start_waiting_jobs first thing.
+	(start_waiting_job): Changed return type from void to int.
+	Return 0 when putting the child on the waiting_jobs chain.
+	(start_waiting_jobs): Don't check load and job_slots here.
+	Always take a job off the chain and call start_waiting_job on it;
+	give up and return when start_waiting_job returns zero.
+
+	* main.c (define_makeflags: struct flag): Change member `char c' to
+	`struct command_switch *switch'.
+	(ADD_FLAG): Set that to CS instead of CS->c.
+	If CS->c is -1, increment FLAGSLEN for the long name.
+	When writing out FLAGS, handle FLAGS->switch->c == -1 and write
+	the long name instead.
+
+	* compatMakefile (stamp-config): New target of old config.h rule.
+	Touch stamp-config after running config.status.
+	(config.h): Just depend on stamp-config, and have empty commands.
+
+Mon Apr  5 20:14:02 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c [HAVE_WAITPID]: #undef HAVE_UNION_WAIT.
+
+	* configure.in (AC_HAVE_FUNCS): Check for psignal.
+
+Fri Apr  2 17:15:46 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* main.c (long_option_aliases): Remove "new"; it is already an
+	unambiguous prefix of "new-file".
+
+Sun Mar 28 16:57:17 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.63.6.
+
+Wed Mar 24 14:26:19 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* vpath.c (selective_vpath_search): When adding the
+	name-within-directory at the end of NAME, and we don't add a
+	slash, don't copy FILENAME in one char too far into NAME.
+
+	* variable.c (define_automatic_variables): Find default_shell's
+	length with strlen, not numerology.
+
+Wed Mar 17 20:02:27 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* main.c (define_makeflags): Add the elts of a string option in
+	reverse order, so they come out right when reversed again.
+
+Fri Mar 12 15:38:45 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* compatMakefile (make.info): Use `-o make.info'.
+
+Thu Mar 11 14:13:00 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* compatMakefile (REMOTE): Set to @REMOTE@; change comments to
+	reflect new use.
+	(objs): Replace remote.o with remote-$(REMOTE).o.
+	(srcs): Replace remote.c with remote-$(REMOTE).c.
+	(remote.o): Rule removed.
+
+	* configure.in (REMOTE): Subst this in Makefile et al; default "stub".
+	Use AC_WITH to grok --with-customs arg to set REMOTE=cstms.
+	* GNUmakefile (build.sh.in): Filter out remote-% from objs list.
+	* build.template (REMOTE): New var; set to @REMOTE@.
+	(objs): Add remote-${REMOTE}.o.
+
+Wed Mar 10 15:12:24 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.63.5.
+
+	* implicit.c (pattern_search): Fix "dependent"->"dependency" in
+	"Rejecting impossible" -d msg.
+
+	* file.c (file_hash_enter): New local vars {OLD,NEW}BUCKET.  Store
+	mod'd values there; never mod {OLD,NEW}HASH.
+
+Mon Mar  8 13:32:48 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* remake.c [eta10]: Include <fcntl.h> instead of <sys/file.h>.
+
+	* compatMakefile (VPATH): Set this to @srcdir@.
+	(srcdir): Set this to $(VPATH).
+
+	* main.c (main): New local var DIRECTORY_BEFORE_CHDIR.  Save in it
+	a copy of CURRENT_DIRECTORY after the first getcwd.  Use it
+	instead of CURRENT_DIRECTORY when chdir'ing back before re-execing.
+
+	* remake.c (notice_finished_file): Pass missing SEARCH arg to f_mtime.
+
+	* read.c (read_makefile): Remove extraneous arg to parse_file_seq.
+
+Mon Feb 22 14:19:38 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile ($(infodir)/$(instname).info): Use , instead of /
+	as the sed delimiter char.
+
+Sun Feb 21 14:11:04 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.63.4.
+
+	* rule.h (struct rule): Removed `subdir' member.
+	* rule.c (new_pattern_rule): No need to clear it.
+	(count_implicit_rule_limits): Set the `changed' flag in each dep
+	that refers to a nonexistent directory.  No longer set rule-global
+	`subdir' flag with that information.
+	(print_rule_data_base): Don't record info on `subdir' flags.
+
+	* implicit.c (pattern_search): Check the DEP->changed flag rather
+	than the (now gone) RULE->subdir flag.  Also test CHECK_LASTSLASH;
+	if it is set, the file might exist even though the DEP->changed
+	flag is set.
+
+	* rule.c (count_implicit_rule_limits): Pass "", not ".", as file
+	name arg to dir_file_exists_p to check for existence of directory.
+
+	* implicit.c (pattern_search): Inside dep-finding loop, set
+	CHECK_LASTSLASH from the value recorded in CHECKED_LASTSLASH[I],
+	rather than computing it anew.
+
+	* commands.c (set_file_variables): Must alloca space for PERCENT
+	and copy it, to avoid leaving the trailing `)' in the value.
+
+	* misc.c (remove_comments): Fixed backslash-checking loop
+	condition to allow it to look at the first char on the line.
+	P2 >= LINE, not P2 > LINE.
+
+	* compatMakefile ($(bindir)/$(instname)): Before moving $@.new to
+	$@, rm $@.old and mv $@ to $@.old.
+
+	* variable.c (try_variable_definition): Take new args FILENAME and
+	LINENO.  Fatal if the variable name is empty.
+	* read.c (read_makefile): Change callers.
+	* main.c (main): Likewise.
+
+	* compatMakefile (group): Define to @KMEM_GROUP@, autoconf magic
+	that configure will replace with the group owning /dev/kmem.
+
+Mon Feb  8 14:26:43 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* vpath.c (vpath_search): Take second arg MTIME_PTR, pass thru to
+	selective_vpath_search.
+	(selective_vpath_search): Take second arg MTIME_PTR.
+	If the dir cache thinks a file exists, stat it to make sure, and
+	put the modtime in *MTIME_PTR.
+	* remake.c (library_search): Take second arg MTIME_PTR.
+	When we find a match, record its mtime there.
+	Pass MTIME_PTR through to vpath_search to do same.
+	(f_mtime): Pass &MTIME as new 2nd arg to {vpath,library}_search;
+	store it in FILE->last_mtime if set nonzero.
+	* implicit.c (pattern_search): Pass nil 2nd arg to vpath_search.
+
+	* compatMakefile (remote.o): Prepend `$(srcdir)/' to `remote-*.c',
+	so globbing looks somewhere it will find things.
+
+	* compatMakefile ($(infodir)/$(instname).info): Install `make.info*'
+	not `$(srcdir)/make.info*'; no need to use basename.
+
+Fri Feb  5 12:52:43 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.63.3.
+
+	* compatMakefile (install): Add missing ;\s.
+
+	Make -, @, and + prefixes on a pre-expanded command line affect
+	all lines in the expansion, not just the first.
+	* commands.h (struct commands): Replace `lines_recurse' member
+	with `lines_flags'.
+	(COMMANDS_{RECURSE,SILENT,NOERROR}): New macros, bits to set in
+	that flag byte.
+	* commands.c (chop_commands): Set `lines_flags' instead of
+	`lines_recurse'.  Record not only + but also @ and - prefixes.
+	* remake.c (notice_finished_file): Check the COMMANDS_RECURSE bit
+	in FILE->cmds->lines_flags, rather than FILE->cmds->lines_recurse.
+	* job.c (start_job_command): Replaced RECURSIVE and NOPRINT local
+	var with FLAGS; initialize it to the appropriate `lines_flags' byte.
+	Set CHILD->noerror if the COMMANDS_NOERROR bit is set in FLAGS.
+	Set the COMMANDS_SILENT bit in FLAGS for a @ prefix.
+
+	* remake.c (update_goal_chain): Set G->file to its prev after
+	checking for G being finished, since that check needs to examine
+	G->file.
+
+	* configure.in (union wait check) [HAVE_WAITPID]: Try using
+	waitpid with a `union wait' STATUS arg.  If waitpid and union wait
+	don't work together, we should not use union wait.
+
+	* Version 3.63.2.
+
+	* remake.c (update_goal_chain): When G->file->updated, move
+	G->file to its prev.  We aren't finished until G->file is nil.
+
+Thu Feb  4 12:53:04 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* main.c (starting_directory): New global variable.
+	(main): Set it to cwd after doing -Cs.
+	(log_working_directory): Use it, rather than computing each time.
+	* make.h: Declare it.
+
+	* compatMakefile (SHELL): Define to /bin/sh for losing Unix makes.
+
+	* main.c (decode_env_switches): Allocate (1 + LEN + 1) words for
+	ARGV, rather than LEN words plus one byte.
+
+Wed Feb  3 18:13:52 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* compatMakefile ($(bindir)/$(instname)): Put - before
+	install_setgid command line, so its failure won't be an error.
+	(infodir): New variable.
+	(install): Depend on $(infodir)/$(instname).info.
+	($(infodir)/$(instname).info): New target.
+
+	* read.c (read_makefile): If FILENAMES is nil when we see a line
+	starting with a tab, don't treat it as a command.  Just fall
+	through, rather than giving an error.
+
+	* read.c (read_makefile): If the NO_TARGETS flag is set when we see a
+	command line, don't clear it before continuing.  We want
+	subsequent command lines to be ignored as well.
+
+	* job.c (new_job): Before expanding each command line, collapse
+	backslash-newline combinations that are inside var or fn references.
+
+Mon Feb  1 16:00:13 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* compatMakefile (exec_prefix): Default to $(prefix), not /usr/local.
+
+	* compatMakefile (make.info): Pass -I$(srcdir) to makeinfo.
+
+	* job.c [POSIX] (unblock_sigs): Made global.
+	[!POSIX] (unblock_sigs): Move defns to job.h.
+	* job.h [POSIX] (unblock_sigs): Declare.
+
+Sun Jan 31 19:11:05 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): In vpath parsing, after finding the
+	pattern token, take entire rest of line as the search path, not
+	just the next token.
+
+	* compatMakefile (remote.o): Depend on remote-*.c.
+
+Thu Jan 28 16:40:29 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* commands.c (set_file_variables): Don't define any F or D versions.
+	* variable.c (define_automatic_variables): Define them here as
+	recursively-expanded variables that use the dir and notdir funcs.
+
+	* variable.c (target_environment): In v_default case, don't export
+	o_default or o_automatic variables.
+
+	* configure.in (union wait check): Remove ` and ' inside C code;
+	they confuse the shell script.
+
+Mon Jan 25 13:10:42 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.63.1.
+
+	* vpath.c (construct_vpath_list): When skipping further processing
+	of an elt that is ".", don't also skip the code that pushes P past
+	the next separator.
+
+	* compatMakefile (distclean): Don't remove make-*.
+
+	* configure.in (HAVE_UNION_WAIT): Try to use WEXITSTATUS if it's
+	defined.  If one cannot use WEXITSTATUS with a `union wait'
+	argument, we don't want to believe the system has `union wait' at all.
+
+	* remake.c (update_file): Do nothing to print "up to date" msgs.
+	(update_goal_chain): Do it here instead.
+	Use the `changed' flag of each goal's `struct dep' to keep track
+	of whether files_remade (now commands_started) changed around a
+	call to update_file for that goal.
+	When a goal is finished, and its file's update_status is zero (i.e.,
+	success or nothing done), test the `changed' flag and give an "up
+	to date" msg iff it is clear.
+	* make.h (files_remade): Renamed to commands_started.
+	* remake.c: Changed defn.
+	(update_goal_chain): Changed uses.
+	* job.c (start_job_command): Increment commands_started here.
+	(reap_children): Not here.
+
+	* remake.c (update_goal_chain): Don't do anything with files'
+	`prev' members.  update_file now completely handles this.
+
+	* variable.c (target_environment): Don't expand recursive
+	variables if they came from the environment.
+
+	* main.c (define_makeflags): For flags with omitted optional args,
+	store {"", 0} with ADD_FLAG.  When constructing FLAGSTRING, a flag
+	so stored cannot have more flags appended to the same word.
+
+Fri Jan 22 14:46:16 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* variable.c (print_variable_set): In vars/bucket calculation,
+	don't spuriously multiply by 100.
+
+	* Version 3.63.
+
+	* job.c [!HAVE_UNION_WAIT] (WTERMSIG, WCOREDUMP, WEXITSTATUS):
+	Don't define if already defined.
+
+	* remake.c (update_file): Don't keep track of the command_state before
+	calling update_file_1.  Remove local variable COMMANDS_FINISHED,
+	and don't test it to decide to print the "is up to date" msg.
+	Testing for files_remade having changed should always be sufficient.
+	The old method lost when we are called in the goal chain run on a
+	makefile, because the makefile's command_state is already
+	`cs_finished' from the makefile chain run.
+
+	* misc.c [HAVE_SETRE[GU]ID]: Test these to decl setre[gu]id.
+
+	* configure.in: Rewrote wait checking.
+	Use AC_HAVE_HEADERS to check for <sys/wait.h>.
+	Use AC_HAVE_FUNCS to check for waitpid and wait3.
+	Use a compile check to test just for `union wait'.
+	* job.c: Rewrote conditionals accordingly.
+	[HAVE_WAITPID]: Test this only to define WAIT_NOHANG.
+	[HAVE_WAIT3]: Likewise.
+	[HAVE_UNION_WAIT]: Test this to define WAIT_T and W*.
+
+	* configure.in: Set CFLAGS and LDFLAGS before all checks.
+
+	* dir.c: Add static forward decls of {open,read}_dirstream.
+
+Thu Jan 21 17:18:00 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.62.31.
+
+	* job.c [NGROUPS_MAX && NGROUPS_MAX==0]: #undef NGROUPS_MAX.
+
+	* compatMakefile (CFLAGS, LDFLAGS): Set to @CFLAGS@/@LDFLAGS@.
+	* build.template (CFLAGS, LDFLAGS): Same here.
+	* configure.in: AC_SUBST(CFLAGS) and LDFLAGS.
+	Set them to -g if not defined in the environment.
+
+	* remake.c (library_search): Use LIBNAME consistently, setting it
+	only once, to be the passed name sans `-l'.
+	Pass new var FILE to be modified by vpath_search.
+
+Mon Jan 18 14:53:54 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.30.
+
+	* job.c (start_waiting_jobs): Return when job_slots_used is equal to
+	job_slots.
+
+	* configure.in: Add AC_CONST for the sake of getopt.
+
+	* read.c (read_makefile): Continue after parsing `override'
+	directive, rather than falling through to lossage.
+	Check for EOL or blank after "override define".
+
+	* compatMakefile (.c.o, remote.o): Put $(CFLAGS) after other switches.
+
+Fri Jan 15 12:52:52 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.29.
+
+	* main.c (define_makeflags): After writing everything into
+	FLAGSTRING, only back up two chars if [-1] is a dash, meaning we
+	just wrote " -".  Always terminate the string at *P.
+
+	* remake.c (library_search): When constructing names in std dirs,
+	use &(*LIB)[2] for the stem, not LIBNAME (which points at the
+	buffer we are writing into!).
+
+Thu Jan 14 13:50:06 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): Set IN_IGNORED_DEFINE for "override
+	define" when IGNORING is true.
+
+	* compatMakefile (distclean): Remove config.status and build.sh.
+
+Wed Jan 13 16:01:12 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.28.
+
+	* misc.c (xmalloc, xrealloc): Cast result of malloc/realloc to
+	(char *).
+
+	* arscan.c (ar_scan) [AIAMAG]: Cast read arg to (char *).
+
+	* variable.c (define_automatic_variables): Override SHELL value for
+	origin o_env_override as well as o_env.
+
+	* GNUmakefile (build.sh.in): Don't replace %globobjs%.  Instead,
+	add the names of the glob objects (w/subdir) to %objs%.
+	* build.template (globobjs): Removed.
+	Take basename of $objs before linking.
+
+Tue Jan 12 12:31:06 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.62.27.
+
+	* configure.in (AC_OUTPUT): Also edit build.sh.
+	* build.template: New file.
+	* GNUmakefile (build.sh.in): New rule to create it from build.template.
+	(make-$(version).tar.Z): Depend on build.sh.in.
+
+	* main.c (die): Call print_data_base if -p.
+	(main): Don't call it here.
+
+	* compatMakefile (defines): Add @DEFS@.  configure should turn this
+	into -DHAVE_CONFIG_H.
+
+Mon Jan 11 14:39:23 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.62.26.
+
+	* misc.c (init_access): Surround with #ifdef GETLOADAVG_PRIVILEGED.
+	({make,user,child}_access) [! GETLOADAVG_PRIVILEGED]: Make no-op.
+	* compatMakefile (install_setgid): New var, set by configure.
+	(install): Install setgid $(group) only if $(install_setgid) is true.
+
+Fri Jan  8 15:31:55 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (load_too_high): If getloadavg fails with errno==0, give a
+	message saying that load limits are not supported.
+
+	* vpath.c (construct_vpath_list): Rewrote path deletion code to
+	not try to use PATH's next link after freeing PATH.
+
+	* main.c (define_makeflags): Rewritten; now handles string-valued
+	option, and has no arbitrary limits.
+	(switches): Set `toenv' flag for -I and -v.
+
+	* main.c (decode_env_switches): Cast return value of alloca to char *.
+
+	* misc.c (child_access) [HAVE_SETREUID, HAVE_SETREGID]: Use
+	setre[gu]id in place of set[gu]id.
+
+Wed Jan  6 15:06:12 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* main.c (main): Define MAKEOVERRIDES, MAKE, and MAKE_COMMAND with
+	origin o_default.
+
+	* make.h [POSIX]: Don't test this to use ANSI_STRING.
+	Testing STDC_HEADERS should be sufficient.
+
+	* job.h: Declare start_waiting_jobs.
+
+	* read.c (read_makefile): Add missing parens in if stmt that find
+	conditional directives.
+
+	* main.c (main): Declare init_dir.
+	* implicit.c (pattern_search): Always use two % specs in a
+	DEBUGP2, and always pass two non-nil args.
+	Cast field width args to int.
+	Add missing parens in !RULE->subdir if stmt.
+	* function.c (expand_function, patsubst_expand): Add parens around
+	assignments inside `while' stmts.
+	* commands.c (print_commands): Cast field width args to int.
+
+	* read.c (do_define): Cast return value of alloca to (char *).
+
+	* main.c (init_switches): New function, broken out of decode_switches.
+	(decode_switches): Take new arg ENV.  If set, ignore non-option
+	args; print no error msgs; ignore options with clear `env' flags.
+	(decode_env_switches): Rewritten to chop envar value into words
+	and pass them to decode_switches.
+	(switches): Set `env' flag for -I and -v.
+
+	* dir.c (init_dir): Cast free to __glob_closedir_hook's type.
+
+Tue Jan  5 14:52:15 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.25.
+
+	* job.c [HAVE_SYS_WAIT || !USG]: Don't #include <sys/time.h> and
+	<sys/resource.h>.  <sys/time.h> interacts badly with <time.h>, and
+	we don't need these anyway.
+
+	* configure.in (AC_HAVE_FUNCS): Check for setre[gu]id.
+	* misc.c ({user,make}_access): Test #ifndef HAVE_SETRE[GU]ID, not
+	#ifdef POSIX || USG.  SunOS 4.1 is supposedly POSIX.1 compliant,
+	but its set[gu]id functions aren't; its setre[gu]id functions work.
+
+	* misc.c ({user,make,child}_access): Give name of caller in error msgs.
+
+	* job.c (load_too_high): Say "cannot enforce load limit" in error msg.
+
+	* configure.in: Call AC_PROG_CC.
+	* compatMakefile (CC): Define to @CC@ (autoconf magic).
+
+	* compatMakefile: Add .NOEXPORT magic target.
+
+Mon Jan  4 17:00:03 1993  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* main.c (print_version): Updated copyright to include 93.
+
+Thu Dec 31 12:26:15 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* make.h [_AIX]: Don't declare alloca.
+
+Tue Dec 29 13:45:13 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.62.24.
+
+	* compatMakefile (objs): Add signame.o.
+	(srcs): Add signame.[ch].
+
+	* compatMakefile (srcs): Add config.h.in.
+	(remote.o): Add -I. before -I$(srcdir).
+
+Mon Dec 28 15:51:26 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.23.
+
+	* read.c (readline): Fatal when LEN==0, indicating a line starting
+	with a NUL.
+	(readline): Take new arg LINENO, for use in error msg.
+	(read_makefile, do_define): Pass it.
+
+	* compatMakefile (glob/libglob.a): Pass -DHAVE_CONFIG_H in CPPFLAGS.
+	(.c.o): Add -I. before -I$(srcdir).
+
+Wed Dec 23 12:12:04 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): Accept and ignore a rule with no targets.
+
+	* compatMakefile (ALLOCA_SRC): New variable.
+	(srcs): Include its value.
+
+	* read.c (struct conditional): Renamed member `max_ignoring' to
+	`allocated'; added new member `seen_else'.
+	(conditional_line): Initialize seen_else flag when starting an `if...';
+	set it when we see an `else'; fatal if set when we see `else'.
+	(read_makefile): Fatal "missing `endif'" if there are any pending
+	conditionals, not just if we are still ignoring.
+
+Tue Dec 22 15:36:28 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile (manext): Set to 1, not l.
+	($(mandir)/$(instname).$(manext)): Use $(srcdir) for make.man in cmds.
+
+	* file.c (file_hash_enter): Don't call uniquize_deps here.
+	* read.c (record_files): Likewise.
+	* implicit.c (pattern_search): Likewise.
+	* commands.c (set_file_variables): Call it only here.
+
+	* default.c (default_variables) [__convex__]: FC=fc.
+
+	* variable.c (target_environment): Expand the values of recursively
+	expanded variables when putting them into the environment.
+	* expand.c (recursively_expand): Made global.
+	* make.h (recursively_expand): Declare it.
+
+	* remake.c (check_dep): Set FILE->command_state to cs_deps_running
+	when a dep's command_state is cs_running or cs_deps_running.
+
+	* read.c (read_makefile): Changed error msg for spurious cmds to
+	not say "first target".
+
+Sun Dec 20 17:56:09 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* configure.in: Do AC_CONFIG_HEADER right after AC_INIT.
+	* make.h (HAVE_CONFIG_H): #include "config.h", then #define this.
+	* compatMakefile (config.h, configure, config.h.in): New rules.
+	(defines): Removed @DEFS@.
+
+Thu Dec 17 16:11:40 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile (realclean): Just depend on distclean; no cmds.
+	(distclean): Do what realclean did before; also remove Makefile and
+	config.h; don't remove configure.
+	(info, dvi): New targets; depend on make.{info,dvi}.
+	(doc): Removed target.
+	(MAKEINFO, TEXI2DVI): New vars.
+	(make.info, make.dvi): Use them instead of explicit cmds.
+
+Wed Dec 16 16:25:24 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* configure.in: Added fcntl.h to AC_HAVE_HEADERS.  getloadavg cares.
+
+Wed Dec  9 15:21:01 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* main.c (long_option_aliases): Add --new-file alias for -W.
+
+	* default.c (default_variables): Change all C++ to CXX and C++FLAGS
+	to CXXFLAGS.
+
+	* read.c (do_define): Expand the variable name before using it.
+
+	* main.c (main): Define variable "MAKE_COMMAND" to argv[0];
+	define "MAKE=$(MAKE_COMMAND) $(MAKEOVERRIDES)" always.
+
+	* remake.c (library_search): Search for libNAME.a in cwd; look in
+	vpath before looking in standard dirs, not after.
+	Changed order of std dirs to: /lib, /usr/lib, ${prefix}/lib.
+
+Mon Nov 23 14:57:34 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* default.c (default_pattern_rules, default_terminal_rules): Added
+	brackets around initializers.
+
+	* variable.c (try_variable_definition): Don't check for LINE[0]=='\t'.
+	(try_variable_definition): Expand the name before defining the var.
+
+	* job.c (init_siglist): Removed function.
+	Removed decl of `sys_siglist'.
+	* make.h [! HAVE_SYS_SIGLIST]: #include "signame.h".
+	[HAVE_SYS_SIGLIST && !SYS_SIGLIST_DECLARED]: Declare sys_siglist
+	only under these conditions.
+	* main.c (main): Don't declare init_siglist.
+	(main) [! HAVE_SYS_SIGLIST]: Call signame_init instead of init_siglist.
+
+Wed Nov 18 14:52:51 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (record_files): Don't try to append to FIRSTDEPS if it's
+	nil; instead just set it to MOREDEPS.
+
+Mon Nov 16 17:49:17 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* vpath.c (construct_vpath_list): Initialize P to DIRPATH before
+	loop that sets MAXELEM.
+
+Fri Nov 13 18:23:18 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.22.
+
+Thu Nov 12 15:45:31 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (start_job_command): Under -n, increment files_remade after
+	processing (i.e., printing) all command lines.
+
+Tue Nov 10 15:33:53 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* read.c (record_files): Append new deps if this rule has no
+	commands; prepend them to existing deps if this rule has no commands.
+
+	* dir.c (open_dirstream): Return nil if DIR->contents->files is nil.
+
+	* read.c (parse_file_seq): Removed last arg STRIP.  Always strip `./'s.
+	(read_makefile): Changed callers.
+	* function.c (string_glob): Likewise.
+	* rule.c (install_pattern_rule): Likewise.
+
+Mon Nov  9 17:50:16 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* remake.c (files_remade): Made global.
+	(notice_finished_file): Don't increment files_remade here; this
+	function gets called in many situations where no remaking was in
+	fact done.
+	* job.c (reap_children): Do it here instead, when we know that
+	actual commands have been run for the file.
+	* make.h (files_remade): Declare it.
+
+Thu Nov  5 18:26:10 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* vpath.c (construct_vpath_list): Allow blanks as well as colons to
+	separate elts in the search path.
+
+	* read.c (read_makefile): Don't fatal on extra tokens in `vpath'.
+	The search path can contain spaces now.
+
+Tue Nov  3 20:44:32 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* compatMakefile (check): New target; no-op.
+
+	* file.c (file_hash_enter): Mod OLDHASH by FILE_BUCKETS after
+	testing for OLDHASH==0 but before using the value.
+	(rename_file): Don't mod OLDHASH by FILE_BUCKETS before passing it
+	to file_hash_enter.
+
+	* file.c (rename_file): Notice when OLDFILE->cmds came from
+	default.c, and don't try to print ->filename in that case.
+
+Sun Oct 25 01:48:23 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* remake.c (update_file): Don't process F->also_make here.
+	(notice_finished_file): Don't process FILE->also_make if no attempt
+	to update FILE was actually made.
+	Fixed to call f_mtime directly to refresh their modtimes.
+
+Sat Oct 24 22:08:59 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (find_percent): Don't increment P again after skipping
+	an escaped %.
+
+	* expand.c (variable_expand): In call to patsubst_expand, don't
+	find `%'s ourselves; let that function do it.
+
+	* read.c (read_makefile: record_waiting_files): Don't call
+	record_files if FILENAMES is nil.
+	(read_makefile): All alternatives in the parsing, except for rule
+	lines, fall through to the end of the loop.  At the end of the
+	loop, do record_waiting_files so we notice later spurious cmds.
+
+Fri Oct 23 15:57:37 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* variable.c (define_automatic_variables): Free old value of SHELL
+	before replacing it.
+
+Thu Oct 15 18:57:56 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* compatMakefile (.c.o): Add -I$(srcdir)/glob to flags.
+
+	* dir.c (open_dirstream): Cast return value to __ptr_t.
+
+	* default.c (default_variables: "GET") [_IBMR2]: Use USG defn.
+
+	* make.h (MAXPATHLEN): Moved out of #ifndef POSIX.
+	(GET_PATH_MAX): Moved from #ifdef POSIX to #ifdef PATH_MAX #else.
+	Define as (get_path_max ()).
+	[! PATH_MAX] (NEED_GET_PATH_MAX): Define.
+	[! PATH_MAX] (get_path_max): Declare fn.
+	* misc.c [NEED_GET_PATH_MAX] (get_path_max): New function.
+
+Mon Oct 12 13:34:45 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.62.21.
+
+	* job.c (sys_siglist): Only declare #ifndef SYS_SIGLIST_DECLARED.
+	* make.h [! HAVE_SYS_SIGLIST && HAVE__SYS_SIGLIST]: #define
+	SYS_SIGLIST_DECLARED.
+
+	* dir.c (file_impossible): When initializing DIR->contents, set
+	DIR->contents->dirstream to nil.
+
+	* compatMakefile (GLOB): Define new variable.
+	(objs): Use it, rather than glob/libglob.a explicitly.
+
+	* read.c (parse_file_seq): When stripping "./", handle cases like
+	".///foo" and "./////".
+	* file.c (lookup_file, enter_file): Likewise.
+
+Sun Oct 11 17:00:35 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* dir.c (struct dirstream, {open,read}_dirstream): New
+	data type and functions to read a directory sequentially.
+	(init_dir): New function to hook it into glob.
+	* main.c (main): Call init_dir.
+
+	* compatMakefile (objs): Added glob/libglob.a.
+	* configure.in: Remove code to test for glob.
+
+Fri Oct  9 12:08:30 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (record_files): Generalized test for NAME pointing
+	somewhere into F->name.
+
+	* variable.c (define_variable_in_set): Free old value when replacing.
+
+	* read.c (do_define): Free the linebuffer before returning.
+	(record_files): When clearing .SUFFIXES deps, free their data.
+	(multi_glob): Free OLD and its data when replacing it with results
+	of glob run.
+
+	* commands.c (set_file_variables): Use alloca in place of xmalloc
+	for temp space for $^, $?, et al.
+
+	* dir.c (struct directory): New member `contents' replaces `files'
+	and `dirstream'.
+	(struct directory_contents): New type.
+	(directories_contents): New hash table.
+	(dir_struct_file_exists_p): Take a struct directory_contents.
+	(dir_file_exists_p): Pass it the `contents' member of the dir found.
+	(dir_struct_file_exists_p): Renamed to dir_contents_file_exists_p;
+	made static.  Return 0 if DIR is nil (meaning it couldn't be stat'd).
+	(dir_file_exists_p, find_directory): Change all callers.
+	(file_impossible): Use DIR->contents, initializing it if nil.
+	(print_dir_data_base): Use DIR->contents, and print out device and
+	inode numbers with each directory.
+
+	* Changes for performance win from John Gilmore <gnu@cygnus.com>:
+	* dir.c (DIRECTORY_BUCKETS): Increase to 199.
+	(DIRFILE_BUCKETS): Decrease to 107.
+	(find_directory): Allocate and zero a multiple of
+	sizeof (struct dirfile *), not of sizeof (struct dirfile).
+	(dir_struct_file_exists_p): New function, nearly all code from
+	dir_file_exists_p.
+	(dir_file_exists_p): Just call find_directory+dir_struct_file_exists_p.
+	* vpath.c (selective_vpath_search): Remove redundant
+	dir_file_exists_p call.
+
+	* configure.in: Comment out glob check; always use our code.
+
+Fri Oct  2 19:41:20 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* make.h [! HAVE_SYS_SIGLIST && HAVE__SYS_SIGLIST]: #define
+	HAVE_SYS_SIGLIST; after doing #define sys_siglist _sys_siglist, we
+	do have it.
+
+Wed Sep 30 19:21:01 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* main.c (main): Don't do -w automatically if -s.
+
+Tue Sep 29 21:07:55 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* main.c (printed_version): Move variable inside print_version.
+	(print_version): Return immediately if printed_version is set.
+	(die): Don't test printed_version here.
+	(decode_switches): Under -v, do print_version before giving usage.
+	(DESCRIPTION_COLUMN): New macro.
+	(decode_switches): Use it when printing the usage message.
+	Leave at least two spaces between options and their descriptions.
+
+Fri Sep 25 13:12:42 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.62.20.
+
+Wed Sep 16 16:15:22 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): Save errno value from trying to open
+	FILENAME, and restore it before erring; otherwise we get the errno
+	value from the last elt of the search path.
+
+Tue Sep 15 15:12:47 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* main.c (long_option_aliases): Add --stop for -S.
+
+	* read.c (word1eq): Do strncmp before dereferencing someplace that
+	may be out in space.
+
+Wed Sep  9 15:50:41 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* remake.c (notice_finished_file): If all the command lines were
+	recursive, don't do the touching.
+
+	* job.c (start_job_command): Don't check for + here.
+	* commands.c (chop_commands): Do it here instead.
+
+	* default.c (default_terminal_rules): Prepend + to cmds for RCS.
+
+Wed Sep  2 17:53:08 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* compatMakefile (objs): Include $(ALLOCA).
+
+	* make.h [CRAY]: Move #define signal bsdsignal to before #includes.
+
+Thu Aug 27 17:45:43 1992  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)
+
+	* read.c (default_include_directories): Add INCLUDEDIR first.
+	* compatMakefile (includedir): Define.
+	(defines): Add -D for INCLUDEDIR="$(includedir)".
+
+	* read.c (read_makefile): Grok multiple files in `include';
+	globbing too.
+
+	* remake.c (library_search): New function.
+	(library_file_mtime): Remove function.
+	(f_mtime): Use library_search instead of library_file_mtime.
+	* compatMakefile (libdir): Define.
+	(defines): Add -D for LIBDIR="$(libdir)".
+	* make.texinfo (Libraries/Search): Document change.
+
+	* file.c (rename_file): Fix file_hash_enter call with missing arg.
+
+Wed Aug 26 17:10:46 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.62.19.
+
+	* main.c (main): Set command_state to cs_finished for temp files
+	made for stdin makefiles.
+
+	* main.c (decode_switches): Don't tell getopt to return non-option
+	args in order.
+	Ignore an argument of `-'.
+
+Thu Aug 20 13:36:04 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* job.c (start_job_command): If (touch_flag && !RECURSIVE), ignore
+	the command line and go to the next.
+	(notice_finished_file): Under -t, touch FILE.
+	* remake.c (remake_file): Don't touch it here.
+
+Wed Aug 19 16:06:09 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* function.c (pattern_matches): Use temporary for strlen (WORD)
+	instead of two function calls.
+
+	* compatMakefile (LOAD_AVG): Remove variable and comments.
+
+Tue Aug 18 14:58:58 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* make.texinfo (Running): Node renamed to `make Invocation'.
+
+Fri Aug 14 12:27:10 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* arscan.c (ar_name_equal): Don't compare [MAX-3..MAX] if
+	NAMELEN != MEMLEN.
+
+Thu Aug 13 17:50:09 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.18.
+
+	* main.c: Don't #include <time.h>; make.h already does.
+
+Mon Aug 10 17:03:01 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* implicit.c (pattern_search): Fixed copying of suffix when building
+	also_make elts.
+
+	* function.c (expand_function: `shell'): Make sure BUFFER is
+	null-terminated before replacing newlines.
+
+	* compatMakefile (mandir): Use man$(manext), not always manl.
+
+Sun Aug  2 01:42:50 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* rule.c (new_pattern_rule): Not static.
+	* rule.h: Declare it.
+
+	* file.c (file_hash_enter): New function, most code from rename_file.
+	(rename_file): Call it.
+	* file.h (file_hash_enter): Declare it.
+
+	* dep.h: Doc fix.
+
+Thu Jul 30 15:40:48 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* main.c (decode_switches): Handle usage_and_exit when building
+	long options vector.
+
+	* default.c (default_terminal_rules): Make RCS rules use $(CHECKOUT,v).
+	(default_variables): Define CHECKOUT,v (hairy).
+
+	* make.h [!HAVE_SYS_SIGLIST && HAVE__SYS_SIGLIST]: #define
+	sys_siglist to _sys_siglist.
+
+Sun Jul 26 16:56:32 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* NEWS: Add header and tail copyright info like Emacs NEWS.
+
+	* make.h [ANSI_STRING]: Don't #define index, rindex, bcmp, bzero,
+	bcopy if already #define'd.
+	[STDC_HEADERS] (qsort, abort, exit): Declare here.
+	[! __GNU_LIBRARY__ && !POSIX]: Not here.
+
+	* make.h [_AIX]: #pragma alloca first thing.
+
+	* job.c (start_waiting_job): Set the command_state to cs_running
+	when we queue a job on waiting_jobs.
+
+Fri Jul 24 02:16:28 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* variable.c (define_automatic_variables): Use "" instead of nil
+	for empty value.
+
+Thu Jul 23 22:31:18 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.17.
+
+	* main.c (struct command_switch.type): Add alternative usage_and_exit.
+	(command_switches): Add -h/--help.
+
+Thu Jul 16 14:27:50 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* GNUmakefile (make-$(version).tar.Z): Include NEWS, not CHANGES.
+	* README.template: Mention NEWS.
+	* CHANGES: Renamed to NEWS.
+
+	* main.c [! STDC_HEADERS] [sun]: Don't declare exit.
+
+Tue Jul 14 18:48:41 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* main.c (main): Set -o files' command_states to cs_finished.
+
+	* rule.c (count_implicit_rule_limits): Decrement num_pattern_rules
+	when tossing a rule.
+
+	* main.c (main): Use alloca only in simple local var assignment,
+	for braindead SGI compiler.
+
+	* rule.c (print_rule_data_base): Barf if num_pattern_rules is
+	inconsistent with the number computed when listing them.
+
+Mon Jul 13 17:51:53 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* commands.c (set_file_variables): For $? and $^ elts that are archive
+	member refs, use member name only.
+
+Fri Jul 10 00:05:04 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* variable.h (struct variable.export): Add new alternative v_ifset.
+	* variable.c (target_environment): Check for it.
+	(define_automatic_variables): Set it for MAKEFILES.
+
+Thu Jul  9 21:24:28 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile (objs): Remove getloadavg.o; $(extras) gets it.
+	(remote.o): Use $(srcdir)/remote.c, not $remote.c<.
+	(distclean, mostlyclean): New targets.
+
+Tue Jul  7 19:12:49 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.16.
+
+	* compatMakefile (config.status): Remove rule.
+
+	* job.c (start_waiting_job): Free C after using C->file, not before.
+
+Sat Jul  4 20:51:49 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* commands.c, job.c, main.c, make.h, remote-cstms.c: Use #ifdef
+	HAVE_* instead of #ifndef *_MISSING.
+	* configure.in: Use AC_HAVE_FUNCS instead of AC_MISSING_FUNCS (gone).
+
+Thu Jul  2 18:47:52 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* main.c (main): makelevel>0 or -C implies -w.
+
+Tue Jun 30 20:50:17 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* file.c, job.c, function.c: Don't #include <errno.h>.
+	make.h: Do it here instead.
+	* arscan.c (ar_member_touch): Don't declare errno.
+
+Thu Jun 25 17:06:55 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* GNUmakefile (make-$(version).tar.Z): Depend on INSTALL, configure.in.
+
+	* remake.c (update_file): If commands or deps are running after
+	update_file_1 returns, break out of the :: rule (->prev) loop and
+	just return.
+
+	* job.c	(job_next_command): New function; code from start_job.
+	(start_job_command): Renamed from start_job.  Call job_next_command
+	and recurse for empty command lines and -n.
+	(start_waiting_job): Call start_job_command, not start_job.
+	(new_job): Call job_next_command to prime the child structure, and
+	then call start_waiting_job.
+	(reap_children): Use job_next_command and start_job_command.
+	(start_waiting_job): Call start_remote_job_p here, and store its
+	result in C->remote.  If zero, check the load average and
+	maybe put C on waiting_jobs.
+	(start_job_command): Test CHILD->remote rather than calling
+	start_remote_job_p.  Don't do load avg checking at all here.
+
+	* main.c (main): Don't handle SIGILL, SIGIOT, SIGEMT, SIGBUS,
+	SIGSEGV, SIGFPE or SIGTRAP.
+
+	* compatMakefile (glob/libglob.a): Don't pass srcdir to sub-make.
+	configure will set it in glob/Makefile.
+
+Wed Jun 24 19:40:34 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* dir.c [DIRENT] (direct): Don't define to dirent.
+	[! DIRENT] (direct): Define to dirent.
+	(dir_file_exists_p): Use struct dirent instead of struct direct.
+
+	* make.h (getcwd): No space between macro and ( for args!
+
+	* job.c (start_job): Don't put the job on waiting_jobs if
+	job_slots_used==0.
+
+	* make.texinfo (Missing): Shortened title.
+
+Tue Jun 23 18:42:21 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* file.c (remove_intermediates): Print "rm" commands under -n.
+
+Mon Jun 22 16:20:02 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.62.15.
+
+Fri Jun 19 16:20:26 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* arscan.c [M_UNIX]: #undef M_XENIX.
+
+Wed Jun 17 17:59:28 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* default.c (default_terminal_rules): Put @ prefix on RCS cmds.
+
+Tue Jun 16 19:24:17 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile (getloadavg.o): Removed special rule.
+	(CFLAGS): Don't include $(defines).
+	(.c.o): Define suffix rule.
+	(glob/libglob.a): Pass CPPFLAGS=$(defines) to submake.
+	(GETOPT_SRC, srcs, tagsrcs): Prefix files with $(srcdir)/.
+
+	* arscan.c (ar_name_equal): Moved local vars inside #if'd block.
+
+	* make.h (max): Removed.
+	* expand.c (variable_buffer_output): Don't use it.
+
+	* compatMakefile (INSTALL): Define.
+	(Makefile): New rule to make from Makefile.in.
+	(srcdir): Define.
+	(VPATH): Define.
+	(getloadavg.o, remote.o): Use autoconf $foo< hack.
+
+	* commands.c (fatal_error_signal): Removed return.
+
+Mon Jun 15 17:42:51 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.14.
+
+	* make.texinfo (Summary): New node.
+	(Special Targets): Mention .EXPORT_ALL_VARIABLES here.
+
+	* variable.c (max): Moved to make.h.
+
+	* compatMakefile (objs, srcs): Added ar & arscan.
+
+	* job.c (start_waiting_job): New function, 2nd half of new_job.
+	(new_job): Call it.
+	(start_waiting_jobs): New function.
+	* remake.c (update_goal_chain): Call start_waiting_jobs at the top
+	of the main loop.
+	* compatMakefile (objs, srcs): Removed load, added getloadavg.
+
+Fri Jun 12 19:33:16 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* job.c (load_too_high): New function.  Uses getloadavg.
+	(waiting_jobs): New variable.
+	(start_job): Don't call wait_to_start_job.  Instead, if
+	load_too_high returns nonzero, add the child to the
+	`waiting_jobs' chain and return without starting the job.
+
+Thu Jun 11 00:05:28 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* expand.c (variable_buffer_output): Made global again.
+	* variable.h: And declare it.
+
+	* arscan.c (PORTAR): Define for all systems if PORT5AR is not defined.
+	(AR_NAMELEN, AR_TRAILING_SLASH): Removed.
+	(ar_scan): Don't use it.  Don't #ifdef AR_TRAILING_SLASH; just look
+	for a slash in the archive at run time.
+	(ar_name_equal): Rewrote .o hacking to not use AR_NAMELEN, and to
+	cope with trailing-slash and non-trailing-slash archives.
+
+	* main.c (main) [! SETVBUF_REVERSED]: Test this instead of USGr3 et al.
+	[SETVBUF_REVERSED]: Always allocate a buffer ourselves.
+
+	* load.c (load_average) [sgi]: Use sysmp call.
+
+	* compatMakefile (INSTALL_DATA, INSTALL_PROGRAM): Define.
+	($(bindir)/$(instname), $(mandir)/make.$(manext)): Use them.
+
+	* make.h [HAVE_VFORK_H]: #include <vfork.h>.
+	(vfork, VFORK_NAME): Don't define.
+	* job.c (start_job): Use "vfork" in place of VFORK_NAME.
+
+	* make.h [HAVE_LIMITS_H, HAVE_SYS_PARAM_H]: If #define'd, #include
+	the each file.  Rearranged PATH_MAX hacking.
+	* job.c: Rearranged NGROUPS_MAX hacking.
+
+	* remake.c (fstat, time): Don't declare.
+
+	* compatMakefile (defines): Value is @DEFS@.
+	(LOADLIBES): Value is @LIBS@.
+	(extras): Value is @LIBOBJS@.
+	(ARCHIVES, ARCHIVES_SRC, ALLOCASRC): Removed.
+	* arscan.c, ar.c: Surround body with #ifndef NO_ARCHIVES.
+
+	* misc.c [! HAVE_UNISTD_H]: Test instead of !POSIX to decl get*id.
+
+	* make.h [GETCWD_MISSING]: Test instead of !USG && !POSIX et al.
+	(getcwd): Just declare if present.  If not, declare as a macro
+	using getwd, and declare getwd.
+	[PATH_MAX] (GET_PATH_MAX): #define to PATH_MAX.
+	* main.c (main,	log_working_directory): Use getcwd instead of getwd.
+
+	* main.c (main) [SETLINEBUF_MISSING]: Test this instead of USG.
+
+	* make.h (SIGHANDLER, SIGNAL): Removed.
+	(RETSIGTYPE): Define if not #define'd.
+	* main.c (main): Use signal in place of SIGNAL.
+
+	* main.c [SYS_SIGLIST_MISSING]: Test instead of USG.
+
+	* job.c (search_path) [GETGROUPS_MISSING]: Test instead of USG.
+	[HAVE_UNISTD_H]: Test instead of POSIX to not decl getgroups.
+
+	* main.c [! HAVE_UNISTD_H]: Test instead of !POSIX to decl chdir.
+	[! STDC_HEADERS]: Test instead of !POSIX to decl exit & atof.
+
+	* job.c (child_handler), commands.c (fatal_error_signal): Return
+	RETSIGTYPE instead of int.
+	* main.c (main): Declare fatal_error_signal and child_handler here
+	to return RETSIGTYPE; removed top-level decl of former.
+
+	* commands.c (fatal_error_signal), job.c (unblock_sigs, start_job),
+	main.c [SIGSETMASK_MISSING]: Test this instead of USG.
+
+Wed Jun 10 22:06:13 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* job.c [HAVE_WAITPID]: Test this instead of USG.
+	[! HAVE_UNISTD_H]: Test this instead of !POSIX to declare misc fns.
+	(GID_T): Don't #define.
+	(search_path): Use gid_t instead of GID_T.
+	[GETDTABLESIZE_MISSING, SYS_SIGLIST_MISSING, DUP2_MISSING]: Test
+	these individually instead of USG for all.
+	* make.h (ctime): Don't declare.  #include time.h instead.
+	[HAVE_UNISTD_H]: #include <unistd.h> and #define POSIX #ifdef
+	_POSIX_VERSION.
+	* dir.c [__GNU_LIBRARY__] (D_NAMLEN): Define to use d_namlen member.
+	* make.h [NEED_MEMORY_H]: Only include memory.h #ifdef this.
+
+	* arscan.c: Removed #ifdef mess about string.h et al.
+	Just #include make.h instead.
+	* make.h (fstat, atol): Declare.
+
+	* commands.c (fatal_error_signal): Don't use sigmask to check for
+	propagated signals; use ||s instead.
+	(PROPAGATED_SIGNAL_MASK): Removed.
+	(fatal_error_signal) [POSIX]: Use sigprocmask in place of sigsetmask.
+
+	* variable.c (variable_buffer, variable_buffer_length,
+	initialize_variable_output, variable_output): Moved to expand.c;
+	made all static.
+	(struct output_state, save_variable_output,
+	restore_variable_output): Removed.
+	* expand.c (initialize_variable_output): Put a NUL at the beginning
+	of the new buffer after allocating it.
+	(allocated_variable_expand_for_file): Don't use
+	{save,restore}_variable_output.  Do it by hand instead, keeping
+	state on the stack instead of malloc'ing it.
+	(allocated_variable_expand): Removed.
+	* variable.h (allocated_variable_expand): Define here as macro.
+	(variable_buffer_output, initialize_variable_output,
+	save_variable_output, restore_variable_output): Removed decls.
+
+	* read.c (conditional_line): For an if cmd, if any elt of the
+	conditionals stack is ignoring, just push a new level that ignores
+	and return 1; don't evaluate the condition.
+
+Thu Jun  4 21:01:20 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* main.c (main): Put #ifdef's around frobbing SIGSYS and SIGBUS.
+
+	* job.c (getdtablesize): Don't declare or #define if already #define'd.
+
+Wed Jun  3 23:42:36 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* file.c (snap_deps): If `.EXPORT_ALL_VARIABLES' is a target, set
+	export_all_variables.
+	* make.texinfo (Variables/Recursion): Document .EXPORT_ALL_VARIABLES.
+
+Tue Jun  2 21:08:35 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.62.13.
+
+	* commands.c (set_file_variables): Calculate length for ^D and ?D
+	individually, making sure to give them at least enough space for "./".
+
+	* make.h [CRAY]: #define signal to bsdsignal.
+
+	* default.c (default_variables) [CRAY]: Define PC, SEGLDR,
+	CF77PPFLAGS, CF77PP, CFT, CF, and FC.
+
+	* arscan.c (AR_HDR_SIZE): Define to sizeof (struct ar_hdr), if it
+	wasn't defined by <ar.h>.
+
+Thu May 28 00:56:53 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.62.12.
+
+Tue May 26 01:26:30 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* rule.c (new_pattern_rule): Initialize LASTRULE to nil, not
+	pattern_rules.
+
+Mon May 25 19:02:15 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* main.c (decode_switches): Initialize all the long_option elt members.
+
+Thu May 21 16:34:24 1992  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)
+
+	* make.texinfo (Text Functions): Correct filter-out description.
+
+Tue May 19 20:50:01 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* compatMakefile (realclean): Don't remove backup files.
+
+	* main.c (decode_switches): Allocate ARGC+1 elts in `other_args'.
+
+Sun May 17 16:38:48 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* Version 3.62.11.
+
+Thu May 14 16:42:33 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* job.c (reap_children): Don't die if wait returns EINTR.
+
+Wed May 13 18:28:25 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* job.c (reap_children): Always run the next command for a
+	successful target.  If we are going to die, we don't want to leave
+	the target partially made.
+
+Tue May 12 00:39:19 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* job.c (construct_command_argv_internal): After loop, if we only
+	have one word, check it for being a shell command.
+
+	* main.c (decode_switches): Allocate ARGC slots in other_args to
+	begin with, so we never need to worry about growing it.
+	If we get a non-option arg and POSIXLY_CORRECT is in the
+	environment, break out of the loop.  After the loop, add all remaining
+	args to other_args list.
+
+	* main.c (decode_switches): For positive_int and floating switches
+	when optarg is nil, use next arg if it looks right (start with a
+	digit, or maybe decimal point for floating).
+
+	* variable.c (define_automatic_variables): Always set SHELL to
+	default if it comes from the environment.  Set its export bit.
+	* make.texinfo (Environment): Document change.
+
+Mon May 11 00:32:46 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* Version 3.62.10.
+
+	* compatMakefile (tags, TAGS): Use vars for cmds.
+	(ETAGS, CTAGS): Define.
+
+	* main.c (decode_switches): If a switches elt has a nil long_name,
+	make the long option name elt be "".
+	Fixed loop to not ignore all the options.
+
+	* make.texinfo (Option Summary): Added long options.
+
+	* main.c (switches): Changed -m's description to "-b".
+	(decode_switches): When printing the usage message, don't print
+	switches whose descriptions start with -.
+	When constructing the list of names for switch -C, search the
+	switches vector for switches whose descriptions are "-C".
+
+	* main.c (switches): Call -S --no-keep-going, not --dont-keep-going.
+	Call -I --include-dir, not --include-path.
+	(long_option_aliases): Added --new == -W, --assume-new == -W,
+	--assume-old == -o, --max-load == -l, --dry-run == -n, --recon == -n,
+	--makefile == -f.
+
+	* main.c (switches): Removed bogus "silent" elt.
+	(long_option_aliases): Define new var.
+	(decode_switches): Add long_option_aliases onto the end of the long
+	options vector created for getopt_long.
+	Look through long_option_aliases for extra names to list
+	in usage message.
+
+Sat May  9 00:21:05 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* main.c (log_working_directory): Fixed to properly not print the
+	leaving message when we haven't printed the entering message.
+
+Fri May  8 21:55:35 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* main.c (struct command_switch): Added elts `long_name',
+	`description', and `argdesc'.
+	(switches): Added initializers for new members.
+	(decode_switches): Rewritten to use getopt_long.
+	* compatMakefile (GETOPT, GETOPT_SRC): Define.
+	(objs, srcs): Include them.
+
+	* job.c (child_died): Renamed to dead_children; made static.
+	(child_handler): Increment dead_children instead of setting child_died.
+	(reap_children): Decrement dead_children instead of clearing
+	child_died.  The point of all this is to avoid printing "waiting
+	for unfinished jobs" when we don't actually need to block.
+	This happened when multiple SIGCHLDs before reap_children was called.
+
+	* job.c (reap_children): If ERR is set, so we don't call start_job
+	on the child being reaped, instead set its command_state to
+	cs_finished.
+	(reap_children, child_handler, new_job): I added several
+	debugging printf's while fixing this.  I left them in if (debug_flag)
+	because they may be useful for debugging this stuff again.
+
+Wed May  6 22:02:37 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): v_export is not 1.
+
+Mon May  4 17:27:37 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.9.
+
+	* variable.c (export_all_variables): New variable.
+	(target_environment): Export variables whose `export' member is
+	v_default if export_all_variables is set and their names are benign.
+	* variable.h: Declare export_all_variables.
+	* read.c (read_makefile): If export or unexport is given with no
+	args, set or clear export_all_variables, respectively.
+
+	* variable.c (target_environment): Exclude MAKELEVEL in the loop,
+	so it isn't duplicated when we add it at the end.
+
+Sun May  3 17:44:48 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.62.8.
+
+	* variable.h (struct variable): Added new member `export'.
+	* variable.c (define_variable_in_set): Initialize it to v_default.
+	(target_environment): Don't check for .NOEXPORT.
+	Export variables whose `export' member is v_default and that would
+	have been exported under .NOEXPORT, and variables whose `export'
+	member is v_export.
+	(try_variable_definition): Return the variable defined.
+	* variable.h (try_variable_definition): Changed decl.
+	* read.c (read_makefile): Recognize `export' and `unexport' directives.
+
+Fri May  1 11:39:38 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* main.c (main) [POSIX]: Reversed args to sigaddset.
+
+Thu Apr 30 17:33:32 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* job.c [POSIX || !USG] (unblock_sigs): New fn.
+	(start_job): Block signals before forking.
+	(new_job): Unblock signals after putting the new child on the chain.
+	* main.c (main) [POSIX]: Use sigset_t fatal_signal_set instead of
+	int fatal_signal_mask.
+
+	* load.c [sgi] (LDAV_CVT): Define.
+
+Wed Apr 29 17:15:59 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* Version 3.62.7.
+
+	* load.c (load_average) [sgi]: Clear the high bit of the address
+	from the symbol table before looking it up in kmem.
+
+	* misc.c (fatal, makefile_fatal): Put *** in fatal error messages.
+	(remake_file): No longer needed in message here.
+
+	* main.c (die): Call reap_children with BLOCK==1.
+
+Tue Apr 28 20:44:35 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* rule.c (freerule): Don't set LASTRULE->next if LASTRULE is nil.
+
+Sun Apr 26 15:09:51 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* rule.c (count_implicit_rule_limits): Initialize LASTRULE to nil,
+	not to head of chain.  Extract next ptr before we might do
+	freerule, and use that for next iteration.
+	(freerule): Still do next ptr frobbing if LASTRULE is nil.
+
+Tue Apr 21 03:16:29 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* job.c (child_error): Removed extra %s from error msg format.
+
+	* Version 3.62.6.
+
+	* job.c (reap_children): Don't start later commands in a sequence
+	if ERR is nonzero.
+
+	* job.c (new_job): Always call reap_children with BLOCK==0 first thing.
+
+	* job.c (reap_children): New function; work that used to be done in
+	child_handler.
+	(child_died): New global var.
+	(child_handler): Now just sets child_died.
+	(wait_for_children): Removed.
+	(unknown_children_possible, block_signals, unblock_signals,
+	push_signals_blocked_p, pop_signals_blocked_p): Removed.
+	(child_execute_job): Removed call to unblock_signals.
+	(new_job): Removed calls to push_signals_blocked_p and
+	pop_signals_blocked_p.
+	* job.h: Declare reap_children, not wait_for_children.
+	* commands.c (fatal_error_signal), job.c (new_job),
+	load.c [LDAV_BASED] (wait_to_start_job), main.c (die),
+	remake.c (update_goal_chain), function.c (expand_function: `shell'):
+	Changed wait_for_children calls to reap_children.
+	Some needed to be loops to wait for all children to die.
+	* commands.c (fatal_error_signal), main.c (main,
+	log_working_directory), function.c (expand_function): Removed calls
+	to push_signals_blocked_p and pop_signals_blocked_p.
+	* job.h: Removed decls.
+
+	* job.h: Added copyright notice.
+
+Wed Apr 15 02:02:40 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (child_error): No *** for ignored error.
+
+Tue Apr 14 18:31:21 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* implicit.c (DEBUGP2): Use do ... while (0) instead of if ... else to
+	avoid compiler warnings.
+
+	* read.c (parse_file_seq): Don't remove ./ when it is followed by a
+	blank.
+
+Mon Apr 13 21:56:15 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* make.h (DEBUGPR): Use do ... while (0) instead of if ... else to
+	avoid compiler warnings.
+
+	* remake.c (notice_finished_file): Run file_mtime on the also_make
+	files, so vpath_search can happen.
+
+	* GNUmakefile (tests): Use perl test suite from csa@sw.stratus.com.
+	(alpha-files): Include test suite tar file.
+
+Fri Apr  3 00:50:13 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* Version 3.62.5.
+
+Wed Apr  1 05:31:18 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* remake.c (update_file, update_file_1): Do check_renamed on elts
+	of dep chains when traversing them.  Something unrelated might have
+	renamed one of the files the dep chain points to.
+
+	* file.c (rename_file): If FILE has been renamed, follow its
+	`renamed' ptr, so we get to the final real FILE.  Using the renamed
+	ones loses because they are not in the hash table, so the removal
+	code loops infinitely.
+
+	* read.c (read_all_makefiles): Clobber null terminator into
+	MAKEFILES expansion, so string passed to read_makefile is properly
+	terminated.
+
+Mon Mar 30 20:18:02 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* commands.c (set_file_variables): $* for archive member with
+	explicit cmds is stem of member, not of whole `lib(member)'.
+
+Thu Mar 26 15:24:38 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* Version 3.62.4.
+
+Tue Mar 24 05:20:51 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* rule.c (new_pattern_rule): Rules are identical only if all their
+	targets match (regardless of order).
+
+Wed Mar 11 13:49:54 1992  Roland McGrath  (roland@geech.gnu.ai.mit.edu)
+
+	* remake.c (remake_file): Changed error "no way to make" to "no
+	rule to make".  Fiat Hugh.
+
+	* make.texinfo (Last Resort): Describe %:: rules and new .DEFAULT
+	behavior.
+
+	* remake.c (update_file_1): Only use .DEFAULT cmds if FILE is not a
+	target.
+
+Tue Mar 10 18:13:13 1992  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)
+
+	* remote-stub.c, remote-cstms.c (start_remote_job): Take new arg,
+	environment to pass to child.
+	* job.c (start_job): Pass it.
+
+Mon Mar  9 19:00:11 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* file.c (enter_file): Also strip ./s here, to get command-line
+	target names.
+
+	* remote-cstms.c: Add comment telling people to leave me alone.
+
+	* compatMakefile (manpage install): Remove target before copying.
+
+Tue Mar  3 18:43:21 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* make.texinfo (Missing): Renamed to "Incompatibilities and ...".
+	Added paragraph describing $? incompatibility with Unix and POSIX.2.
+
+Sun Mar  1 15:50:54 1992  Roland McGrath  (roland@nutrimat.gnu.ai.mit.edu)
+
+	* function.c (expand_function: `shell'): Don't declare fork or pipe.
+	Use vfork instead of fork.
+
+Tue Feb 25 22:05:32 1992  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)
+
+	* make.texinfo (Chained Rules): Clarify .PRECIOUS to save
+	intermediate files.
+
+	* load.c [sun] (LDAV_CVT): Define to divide by FSCALE.
+
+Sun Feb 16 02:05:16 1992  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)
+
+	* Version 3.62.3.
+
+Sat Feb 15 17:12:20 1992  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)
+
+	* compatMakefile (makeinfo): Use emacs batch-texinfo-format fn.
+
+Fri Feb 14 00:11:55 1992  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): Correctly handle define & endef in ifdefs.
+
+	* read.c (record_files): Pass arg for %s in error msg.
+
+	* main.c (main) [__IBMR2, POSIX]: Use correct (a la USGr3) setvbuf
+	call.
+
+Wed Feb 12 12:07:39 1992  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)
+
+	* make.texinfo (Libraries/Search): Say it does /usr/local/lib too.
+
+Sun Feb  9 23:06:24 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* read.c (read_makefile): Check for extraneous `endef' when ignoring.
+
+Thu Feb  6 16:15:48 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* Version 3.62.2.
+
+Tue Feb  4 20:04:46 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (construct_command_argv_internal): Correctly ignore
+	whitespace after backslash-NL.
+
+Fri Jan 31 18:30:05 1992  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* compatMakefile: Ignore errors from chgrp and chmod when installing.
+
+Wed Jan 29 18:13:30 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* main.c (main): When setting MAKELEVEL in the env to re-exec,
+	allocate space so as not to clobber past the end of the old string.
+
+	* make.h [HAVE_ALLOCA_H]: Include <alloca.h>
+	* compatMakefile (defines): Document HAVE_ALLOCA_H.
+
+Mon Jan 20 13:40:05 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* make.h [VFORK_MISSING]: Use fork instead.
+	* compatMakefile (defines): Document same.
+
+	* job.c (construct_command_argv_internal): Don't create an empty
+	arg if backslash-NL is at beginning of word.
+
+Sun Jan 19 16:26:53 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* main.c [DGUX]: Call setvbuf as for USGr3.
+
+	* job.c (construct_command_argv_internal): Notice correctly that
+	backslash-NL is the end of the arg (because it is replaced with a
+	space).
+
+Thu Jan 16 18:42:38 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* job.c (construct_command_argv_internal): If SHELL is nil, set it
+	to default_shell before proceeding.
+
+	* make.h [sgi]: No alloca.h, after all.
+
+Wed Jan 15 12:30:04 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* read.c (multi_glob): Cons up the chain of the results of glob
+	from back to front, so it comes out in forward order.
+
+	* job.c (construct_command_argv_internal): Don't eat char following
+	backslash-NL.
+
+Mon Jan 13 19:16:56 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* Version 3.62.1.
+
+	* default.c (default_variables) [ultrix]: GET=get, like USG.
+
+	* job.c (construct_command_argv_internal): Remove tabs following
+	backslash-NL combos in the input line, so they don't show up when
+	that line is printed.
+
+	* read.c (read_makefile): Don't collapse_continuations the line on
+	input; do it on the copy we do remove_comments on.
+	For rule lines, collapse_continuations the line after chopping
+	";cmds" off the end, so we don't eat conts in the cmds.
+	Give error for ";cmds" with no rule.
+	* job.c (construct_command_argv_internal): Eat backslash-NL combos
+	when constructing the line to recurse on for slow, too.
+
+Sat Jan 11 02:20:27 1992  Roland McGrath  (roland@albert.gnu.ai.mit.edu)
+
+	* file.c (enter_file): Don't strip leading `./'s.
+	* read.c (parse_file_seq): Take new arg STRIP; if nonzero, do it here.
+	* default.c (set_default_suffixes), function.c (string_glob),
+	read.c (read_makefile), rule.c (install_pattern_rule): Change callers.
+
+	* default.c (default_variables) [_IBMR2]: FC=xlf
+
+	* job.c (construct_command_argv_internal): Turn backslash-NL and
+	following whitespace into a single space, rather than just eating
+	the backslash.
+
+	* make.texinfo (Copying): @include gpl.texinfo, rather than
+	duplicating its contents.
+
+Fri Nov  8 20:06:03 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* job.c (construct_command_argv_internal): Make sure not to bother
+	processing an empty line.
+
+	* Version 3.62.0.
+
+	* job.c (construct_command_argv_internal): Always recurse for slow;
+	simple case didn't handle finding newlines.
+
+Tue Nov  5 18:51:10 1991  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)
+
+	* job.c (construct_command_argv_internal): Set RESTP properly when
+	slow; don't \ify past a newline.
+
+Fri Nov  1 19:34:28 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)
+
+	* make.h [sgi]: #include <alloca.h>.
+
+
+
+See ChangeLog.1, available in the Git repository at:
+
+	http://git.savannah.gnu.org/cgit/make.git/tree/
+
+for earlier changes.
+
+
+Copyright (C) 1991-2007 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/ChangeLog.3 b/src/kmk/ChangeLog.3
new file mode 100644
index 0000000..5fcf273
--- /dev/null
+++ b/src/kmk/ChangeLog.3
@@ -0,0 +1,5633 @@
+2013-10-09  Paul Smith  <psmith@gnu.org>
+
+	Version 4.0 released.
+
+	* configure.ac: Updated for the release.
+	* NEWS: Updated for the release.
+
+	* maintMakefile (tag-release): New target to add a Git tag.
+	* read.c (eval): Typo fix.
+	* ChangeLog.1: Typo fixes.
+	* w32/subproc/sub_proc.c (process_cleanup): Typo fix.
+
+2013-10-07  Eli Zaretskii  <eliz@gnu.org>
+
+	* w32/compat/posixfcn.c (tmpfile): Move declaration of h before
+	the first executable statement.  Reported by Gisle Vanem
+	<gvanem@yahoo.no>.
+
+2013-10-05  Paul Smith  <psmith@gnu.org>
+
+	* makeint.h (MAP_USERFUNC): A new map type for function names.
+	* main.c (initialize_stopchar_map): Set up the function name map.
+
+	* gnumake.h (gmk_func_ptr): Define a type for function pointers.
+	(gmk_add_function): Convert the last argument to FLAGS.
+	(GMK_FUNC_*): Define flags for the function.  Change the default
+	behavior to "expand" since that's the most common one.
+
+	* function.c (function_table_entry): Use new function pointer type.
+	(lookup_function): Accept any valid function name character based
+	on the MAP_USERFUNC values.
+	(define_new_function): Use the new calling signature.  Verify that
+	registered functions have valid names.
+
+	* guile.c (guile_gmake_setup): Use new calling signatures.
+	* loadapi.c (gmk_add_function): Ditto.
+	* variable.h (define_new_function): Ditto.
+
+	* doc/make.texi (Loaded Object API): Make the registered function
+	API documentation more clear.
+
+2013-10-03  Eli Zaretskii  <eliz@gnu.org>
+
+	* function.c (abspath): Reset root_len to one for Cygwin only when
+	HAVE_DOS_PATHS is defined.  Suggested by Christopher Faylor.
+
+2013-10-02  Eli Zaretskii  <eliz@gnu.org>
+
+	* w32/compat/posixfcn.c (tmpfile): New function, a replacement for
+	the Windows libc version.
+
+	Fix $abspath on Cygwin when HAVE_DOS_PATHS is in effect.
+	* function.c (IS_ABSOLUTE) [__CYGWIN__]: Special definition for
+	Cygwin.
+	(abspath) [__CYGWIN__]: Reset root_len to 1 if the absolute file
+	name has the Posix /foo/bar form.
+	[HAVE_DOS_PATHS]: Use root_len instead of hard-coded 2.
+
+2013-10-01  Paul Smith  <psmith@gnu.org>
+
+	* configure.ac: Update version to 3.99.93.
+	* NEWS: Ditto.
+
+2013-09-30  Paul Smith  <psmith@gnu.org>
+
+	* guile.c: Portability fixes for Guile 1.8.
+
+2013-09-29  Paul Smith  <psmith@gnu.org>
+
+	* output.c (output_dump): Always write Enter/Leave messages to stdio.
+	(log_working_directory): This now always writes to stdio, so we
+	don't need the struct output parameter anymore.
+	(output_start): Show the working directory when output_sync is not
+	set or is recursive.
+	* main.c (main): Ensure the special "already shown Enter message"
+	token is removed from MAKE_RESTARTS before the user can see it.
+	* function.c (func_shell_base): If the output_context stderr
+	exists but is invalid, write to the real stderr.
+	Fixes suggested by Frank Heckenbach <f.heckenbach@fh-soft.de>.
+
+	* output.c: Guard unistd.h inclusion, add io.h.
+	* gnumake.h: Move GMK_EXPORT before the declarations.
+	* make_msvc_net2003.vcproj: Add missing files.
+	Changes for MSVC suggested by Gerte Hoogewerf <g.hoogewerf@gmail.com>
+
+	* function.c (func_shell_base) [EMX]: Fix EMX support for output-sync.
+	* job.c (child_execute_job) [EMX]: Ditto.
+	* job.h (child_execute_job) [EMX]: Ditto.
+	* w32/compat/posixfcn.c: Invert the test for NO_OUTPUT_SYNC.
+
+	* guile.c (GSUBR_TYPE): Pre-2.0 Guile doesn't provide a typedef
+	for gsubr pointers.  Create one.
+	(guile_define_module): Use it.
+	(internal_guile_eval): Force UTF-8 encoding for Guile strings.
+
+	* main.c (main): Clear GNUMAKEFLAGS after parsing, to avoid
+	proliferation of options.
+	* NEWS: Document it.
+	* doc/make.texi (Options/Recursion): Ditto.
+
+2013-09-23  Eli Zaretskii  <eliz@gnu.org>
+
+	* w32/compat/posixfcn.c: Fix the forgotten OUTPUT_SYNC conditional.
+
+	* job.h: Ditto, but in a comment.
+
+2013-09-22  Paul Smith  <psmith@gnu.org>
+
+	* configure.ac: Update version to 3.99.92.
+	* NEWS: Ditto.
+
+	* implicit.c (pattern_search): After second expansion be sure to
+	handle order-only markers inside the expansion properly.
+	Fixes Savannah bug #31155.
+
+	* guile.c (guile_define_module): Technically a void* cannot
+	contain a pointer-to-function and some compilers warn about this.
+	Cast the function pointers.
+	* load.c (load_object): Ditto.
+
+	* read.c (eval): If load_file() returns -1, don't add this to the
+	"to be rebuilt" list.
+	* doc/make.texi (load Directive): Document it.
+
+	* guile.c (guile_gmake_setup): Don't initialize Guile so early.
+	(func_guile): Lazily initialize Guile the first time the $(guile ..)
+	function is invoked.  Guile can steal file descriptors which
+	confuses our jobserver FD checking, so we don't want to initialize
+	it before we have to.
+
+	VMS port updates by Hartmut Becker <becker.ismaning@freenet.de>
+
+	* makefile.com: Add output to the filelist.
+	* output.c (va_copy): Add an implementation of this macro for VMS.
+	* commands.c: Ensure filedef.h is #included before dep.h.
+	* dir.c: Ditto.
+	* file.c: Ditto.
+	* guile.c: Ditto.
+	* main.c: Ditto.
+	* misc.c: Ditto.
+	* read.c: Ditto.
+	* rule.c: Ditto.
+	* variable.c: Ditto.
+	* readme.vms: Renamed to README.VMS and updates for this release.
+	* Makefile.am: Ditto.
+	* NEWS: Ditto.
+	* README.template: Ditto.
+	* Makefile.DOS.template: Ditto.
+
+2013-09-21  Paul Smith  <psmith@gnu.org>
+
+	* maintMakefile (check-alt-config): Create a target to test
+	alternative configurations.  Each one will build make with a
+	different configuration then run the test suite.
+
+	Invert the output-sync #define to NO_OUTPUT_SYNC
+
+	* configure.ac: Don't set OUTPUT_SYNC.
+	* makeint.h: Ditto.
+	* main.c: Use NO_OUTPUT_SYNC instead of OUTPUT_SYNC.
+	* output.c: Ditto.
+	* output.h: Ditto.
+	* job.h: Ditto.
+	* job.c: Ditto.
+	* config.ami.template: Set NO_OUTPUT_SYNC.
+	* config.h-vms.template: Ditto.
+	* config.h.W32.template: Ditto.
+	* configh.dos.template: Ditto.
+
+	Output generated while reading makefiles should be synced.
+
+	* main.c (make_sync): Define a context for syncing while reading
+	makefiles and other top-level operations.
+	(main): If we request syncing, enable it while we are parsing
+	options, reading makefiles, etc. to capture that output.  Just
+	before we start to run rules, dump the output if any.
+	(die): Dump any output we've been syncing before we die
+	* output.h (OUTPUT_SET): Disable output_context if not syncout.
+
+	Stderr generated from shell functions in recipes should be synced.
+
+	* job.h (FD_STDIN, FD_STDOUT, FD_STDERR): Create new macros to
+	avoid magic numbers.
+	(child_execute_job): Take a FD for stderr.
+	* job.c (child_execute_job): Handle STDERR FD's in addition to
+	stdin and stdout.
+	(start_job_command): Call child_execute_job() with the new STDERR
+	parameter.  Instead of performing the dup() here, send it to
+	child_execute_job() where it's already being done.
+	* function.c (func_shell_base): Pass the OUTPUT_CONTEXT stderr to
+	child_execute_job() if it's set, otherwise FD_STDERR.
+	* main.c (main): Pass FD_STDERR to child_execute_job().
+
+2013-09-19  Paul Smith  <psmith@gnu.org>
+
+	* main.c (main): Set MAKE_RESTARTS to negative before re-exec if
+	we've already generated an "Entering" message.  If we are started
+	and notice that MAKE_RESTARTS is negative, assume we already wrote
+	"Entering" and don't write it again.
+
+2013-09-18  Paul Smith  <psmith@gnu.org>
+
+	* main.c (main): Set starting_directory before we write any
+	errors.  Fixes Savannah bug #40043.
+
+2013-09-16  Eli Zaretskii  <eliz@gnu.org>
+
+	* output.c [WINDOWS32]: Include windows.h and sub_proc.h, to avoid
+	compiler warnings for CLOSE_ON_EXEC.
+
+2013-09-16  Paul Smith  <psmith@gnu.org>
+
+	* configure.ac: Update version to 3.99.91.
+	* NEWS: Ditto.
+
+2013-09-15  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Error Messages): Add a bit more info to the
+	section on static pattern errors, since they're common.
+	Fixes Savannah bug #31326.
+
+	* read.c (eval_makefile): If the file open fails with an
+	unrecoverable error, stop now rather than trying to make it.
+	Fixes Savannah bug #27374.
+
+	* main.c (main): Perform the validation of the jobserver FDs
+	early, before we read makefiles, to ensure that something hasn't
+	opened and used those FDs for some other reason.
+	Fixes Savannah bug #39934.
+
+	* main.c (main): Don't set MAKEFLAGS in the environment when we
+	restart.  We have the original command line flags so keep the
+	original MAKEFLAGS settings as well.
+	Fixes Savannah bug #39203.
+
+2013-09-14  Paul Smith  <psmith@gnu.org>
+
+	* main.c (decode_debug_flags): Add support for the "n" flag to
+	disable all debugging.
+	* make.1: Document the "n" (none) flag.
+	* doc/make.texi (Options Summary): Ditto.
+	* NEWS: Ditto.
+	Fixes Savannah bug #35248.
+
+	* misc.c (close_stdout): Move to output.c.
+	* main.c (main): Move atexit call to output_init().
+	* makeint.h: Remove close_stdout() declaration.
+	* output.c (output_init): Add close_stdout at exit only if it's	open.
+	Fixes Savannah bug #33134.  Suggested by David Boyce <dsb@boyski.com>.
+
+2013-09-14  Paul Smith  <psmith@gnu.org>
+
+	* misc.c (set_append_mode, open_tmpfd, open_tmpfile): Move to output.c.
+	* misc.h: Ditto.
+	* output.h: Ditto.
+	* main.c (main): Move stdio init into output.c:output_init().
+	Change open_tmpfile() to output_tmpfile().
+	* output.c: Rename open_*() to output_*().  set_append_mode() and
+	open_tmpfd() are static.
+	(_outputs, log_working_directory): Accept a struct output and
+	print to that rather than the global context.
+	(output_dump): In recurse mode print enter/leave once for the
+	whole makefile.
+	(output_init): Initialize this processes stdio as well as child's.
+
+	* vmsjobs.c: Reformat to be closer to convention.
+
+2013-09-12  Paul Smith  <psmith@gnu.org>
+
+	Rework output to handle synchronization and directory logging more
+	reliably.
+
+	* output.c: New file.  Implement lazy synchronization and
+	directory logging so that we manage them "just in time", and the
+	destination of the output is set via a global state variable.
+	* output.h: New file.
+	* function.c (func_shell_base): Ensure the output is set up before
+	running a shell command, in case it writes to stderr.
+	(func_error): Use outputs() to generate output.
+	* job.h (struct child): Add struct output to track the child's output.
+	* job.c: Use struct output in the child structure to track output.
+	(child_out, sync_init, assign_child_tempfiles, pump_from_tmp)
+	(acquire_semaphore, release_semaphore, sync_output): Move most of
+	the output_sync handling to output.c.
+	(child_error): Set output, then use simple message() and error()
+	not _s versions.
+	* main.c (log_working_directory): Moved to output.c
+	(trace_option, decode_trace_flags) Remove.  Remove support for
+	different trace modes; we don't use it anymore.
+	(die) Invoke output_close() before we exit.
+	* misc.c (message_s, error_s): Removed; no longer needed.
+	(message, error, fatal, perror_with_name, pfatal_with_name): Moved
+	to output.c.
+	* makeint.h: Remove message_s(), error_s(), and
+	log_working_directory().  Remove the TRACE_* macros.
+	* doc/make.texi: Enhance documentation for output sync, and remove
+	MODE assignment for --trace.
+	* make.1: Remove MODE assignment for --trace.
+	* Makefile.am: Add new files.
+	* NMakefile.template: Ditto.
+	* SMakefile.template: Ditto.
+	* build_w32.bat: Ditto.
+	* dosbuild.bat: Ditto.
+	* make.lnk: Ditto.
+	* make_nsvc_net2003.vcproj: Ditto.
+	* makefile.vms: Ditto.
+	* po/POTFILES.in: Ditto.
+
+2013-08-22  Petr Machata  <pmachata@redhat.com>
+
+	* function.c (func_shell_base): Get rid of any avoidable limit on
+	stack size for processes spawned via $(shell).
+
+2013-07-22  Paul Smith  <psmith@gnu.org>
+
+	* implicit.c (pattern_search): Use PARSE_SIMPLE_SEQ() even for
+	non-second expansion prerequisites, to handle globbing in patterns.
+	Fixes Savannah bug #39310.
+
+	* dep.h (PARSE_SIMPLE_SEQ): Macro for simple file sequence parsing.
+	* default.c (set_default_suffixes): Use it.
+	* file.c (split_prereqs): Ditto.
+	* main.c (main): Ditto.
+	* read.c (eval): Ditto.
+	* rule.c (install_pattern_rule): Ditto.
+	* file.c (split_prereqs): Use PARSEFS_NONE instead of 0.
+
+2013-07-21  Paul Smith  <psmith@gnu.org>
+
+	Cleanups detected by cppcheck.  Fixes Savannah bug #39158.
+	* arscan.c (ar_scan): Reduce the scope of local variables.
+	* dir.c (vms_hash): Ditto.
+	(find_directory): Ditto.
+	(file_impossible_p): Ditto.
+	* expand.c (variable_expand_string): Ditto.
+	* function.c (func_sort): Ditto.
+	(func_and): Ditto.
+	* job.c (reap_children): Ditto.
+	(exec_command): Ditto.
+	* main.c (main): Ditto.
+	* misc.c (collapse_continuations): Ditto.
+	* read.c (eval): Ditto.
+	(parse_file_seq): Ditto.
+	* vpath.c (gpath_search): Ditto.
+	(selective_vpath_search): Ditto.
+	* job.c (is_bourne_compatible_shell): Simplify for non-Windows systems.
+	* remake.c (f_mtime): Remove duplicate test.
+	* signame.c (strsignal): Fix bogus conditional.
+
+	* job.c (assign_child_tempfiles): Assign OUTFD to -1 for safety.
+	(start_job_command): Don't test output_sync and sync_cmd: redundant.
+	Changes suggested by Frank Heckenbach <f.heckenbach@fh-soft.de>.
+
+2013-07-14  Paul Smith  <psmith@gnu.org>
+
+	* filedef.h (update_status): Convert UPDATE_STATUS from a char to
+	an enumeration.  Some systems declare "char" to be "unsigned"
+	which broke the code (which expected to be able to use -1 as a
+	flag).  Using magic values was unpleasant, so rather than just
+	force "signed char" I reworked it to use an enum.
+
+	* dep.h (update_goal_chain): Return an update_status value not int.
+	* remake.c (touch_file): Ditto.
+	(update_goal_chain): Track the update_status enum.
+
+	* file.c (enter_file): Use new enumeration values with update_status.
+	(remove_intermediates): Ditto.
+	(print_file): Ditto.
+	* commands.c (execute_file_commands): Ditto.
+	* job.c (reap_children): Ditto.
+	(start_job_command): Ditto.
+	(start_waiting_job): Ditto.
+	* main.c (main): Ditto.
+	* remake.c (update_file): Ditto.
+	(complain): Ditto.
+	(update_file_1): Ditto.
+	(notice_finished_file): Ditto.
+	(remake_file): Ditto.
+	* vmsjobs.c (vmsHandleChildTerm): Ditto.
+
+2013-07-09  Paul Smith  <psmith@gnu.org>
+
+	* implicit.c (pattern_search): Keep a local copy of the number of
+	deps in deplist: the global max might change due to recursion.
+	Fixes a bug reported by Martin d'Anjou <martin.danjou14@gmail.com>.
+
+2013-06-28  Paul Smith  <psmith@gnu.org>
+
+	* misc.c (set_append_mode): Set the O_APPEND flag on a file descriptor.
+	(open_tmpfd): Set append mode on the temporary file descriptor.
+	* main.c (main): Set append mode on stdout and stderr.
+	* makeint.h (set_append_mode): Declare it.
+
+2013-06-22  Eli Zaretskii  <eliz@gnu.org>
+
+	* build_w32.bat (LinkGCC): Prevent a comment from being displayed
+	at build time.
+
+	* job.c (construct_command_argv_internal) [WINDOWS32]: Use
+	case-insensitive comparison with internal commands of non-Unix
+	shells.
+
+	* main.c (find_and_set_default_shell): Don't use file_exists_p or
+	dir_file_exists_p, as those call readdir, which can fail if PATH
+	includes directories with non-ASCII characters, and that would
+	cause Make to fail at startup with confusing diagnostics.  See
+	https://sourceforge.net/mailarchive/message.php?msg_id=30846737
+	for the details.
+
+2013-06-22  Paul Smith  <psmith@gnu.org>
+
+	Improve performance by using a character map to determine where we
+	want to stop searching strings, rather than discrete comparisons.
+
+	* read.c (find_char_unquote): Pass a stop map instead of various
+	flags and use that to check when to stop parsing the string.
+	(eval): Use the new find_char_unquote() calling signature.
+	(remove_comments): Ditto.
+	(unescape_char): Ditto.
+	(find_percent_cached): Ditto.
+	(parse_file_seq): Use a stop-map flag.
+	* main.c (stopchar_map): Character map definition.
+	(initialize_stopchar_map): Initialize the map definition.
+	(main): Invoke the map initialization function.
+	* misc.c (end_of_token_w32): Remove unused function.
+	* dir.c (dosify): Use STOP_SET to check for stop chars.
+	* main.c (main): Ditto.
+	* misc.c (end_of_token): Ditto.
+	* function.c (subst_expand): Ditto.
+	(func_notdir_suffix): Ditto.
+	(func_basename_dir): Ditto.
+	(abspath): Ditto.
+	* job.c (is_bourne_compatible_shell): Ditto.
+	* variable.c (parse_variable_definition): Ditto.
+	* read.c (eval): Ditto.
+	(conditional_line): Ditto.
+	(find_percent_cached): Ditto.
+	* dep.h (PARSE_FILE_SEQ): Update function declaration.
+	* default.c (set_default_suffixes): Update PARSE_FILE_SEQ() call.
+	* file.c (split_prereqs): Ditto.
+	* function.c (string_glob): Ditto.
+	* implicit.c (pattern_search): Ditto.
+	* rule.c (install_pattern_rule): Ditto.
+	* main.c (main): Ditto.
+
+2013-06-21  Paul Smith  <psmith@gnu.org>
+
+	* main.c (verify_flag): Global variable to determine whether to
+	verify the database or not.
+	(decode_debug_flags): If debug mode, enable verify_flag.
+	(main): If MAKE_MAINTAINER_MODE, enable verify_flag, otherwise not.
+	(die): Only verify the database if verify_flag is set.
+	* file.c (enter_file): Don't check caching unless verify_flag.
+	* makeint.h: Export verify_flag.
+
+2013-05-27  Paul Smith  <psmith@gnu.org>
+
+	* variable.c (define_automatic_variables): Create a new variable
+	MAKE_HOST.
+
+2013-05-27  Hartmut Becker  <becker.ismaning@freenet.de>
+
+	* function.c (func_shell_base) [VMS]: Support VMS.
+	* makefile.com [VMS]: Ditto.
+	* makefile.vms [VMS]: Ditto.
+	* makeint.h [VMS]: Ditto.
+	* vmsjobs.c [VMS]: Ditto.
+	* job.h: Define RECORD_SYNC_MUTEX() when OUTPUT_SYNC is not set.
+	* load.c (unload_file): Fix signature if MAKE_LOAD is not set.
+
+2013-05-26  Paul Smith  <psmith@gnu.org>
+
+	* remake.c (f_mtime): Ensure that archive file names are in the
+	string cache.  Fixes Savannah bug #38442.
+
+	* read.c (readline): To be safe, move the entire buffer if we
+	detect a CR.  Fixes Savannah bug #38945.
+
+	* job.c (new_job): Compare OUT to the beginning of the OUT
+	var/function, not IN.  Fixes Savannah bug #39035.
+
+2013-05-22  Paul Smith  <psmith@gnu.org>
+
+	* main.c (switches[]): Order switches so simple flags all come first.
+	(define_makeflags): Rework to make option passing more
+	reliable and the code less tricksy.  Ensure simple flags are kept
+	in the initial batch of flags.  Do not allow any flags with
+	options in that batch.  If there are only non-simple flags MAKEFLAGS
+	begins with ' '.
+	(print_data_base): Print the version.  Fixes part of Savannah #35336.
+
+	* read.c (eval_buffer): Initialize lineno.
+
+2013-05-18  Alexey Pavlov  <alexpux@gmail.com>  (tiny change)
+
+	* w32/Makefile.am (libw32_a_SOURCES): Add compat/posixfcn.c.
+
+	* configure.ac (OUTPUT_SYNC): Define for mingw32 target.
+
+	* job.c (construct_command_argv_internal) <sh_cmds_dos>
+	[WINDOWS32]: Add "move".  Fixes Savannah bug #30714.
+
+	* guile.c: Move inclusion of makeint.h before gnumake.h.  This
+	order must be observed when building Make, because gnumake.h must
+	be included with GMK_BUILDING_MAKE defined, which makeint.h
+	already does.  Otherwise, the linker will look for, and fail to
+	find, gmk_* functions in some external dynamic library.
+
+2013-05-17  Benno Schulenberg  <bensberg@justemail.net>
+
+	* main.c (decode_output_sync_flags): Fix output message.
+	* read.c (EXTRANEOUS): Ditto.
+	(record_files): Ditto.
+	* remake.c (update_file_1): Ditto.
+
+2013-05-17  Eli Zaretskii  <eliz@gnu.org>
+
+	* main.c (prepare_mutex_handle_string): Define conditioned on
+	OUTPUT_SYNC.
+
+	* build_w32.bat: Copy config.h.W32 to config.h regardless of
+	whether or not we are building from SCM.
+
+2013-05-17  Paul Smith  <psmith@gnu.org>
+
+	* configure.ac: Update version to 3.99.90.
+	* NEWS: Ditto.
+
+	* Source (*.[ch]): Remove TABs, use GNU coding styles.
+
+	* ALL: Update copyright.
+
+	* hash.c (CALLOC): Use xcalloc() to handle out of memory errors.
+
+	* makeint.h: Prototype new unload_file() function.
+	* load.c (unload_file): Create a function to unload a file.
+	(struct load_list): Type to remember loaded objects.
+	(loaded_syms): Global variable of remembered loaded objects so we
+	can unload them later.  We don't have to remove from the list
+	because the only time we unload is if we're about to re-exec.
+	(load_object): Remove unneeded extra DLP argument.
+	(load_file): Remove unneeded extra DLP argument.
+	* filedef.h (struct file): Remove the DLP pointer and add the
+	LOADED bit flag.  Saves 32/64 bytes per file, as this pointer is
+	almost never needed.
+	* read.c (eval): Set the new LOADED bit flag on the file.
+	* file.c (rehash_file): Merge the loaded bitfield.
+	* commands.c (execute_file_commands): Call unload_file() instead
+	of dlclose() directly.
+
+2013-05-14  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Loaded Object API): Document the requirement for
+	the plugin_is_GPL_compatible symbol.
+	* load.c (load_object): Check for plugin_is_GPL_compatible symbol.
+
+2013-05-13  Paul Smith  <psmith@gnu.org>
+
+	* filedef.h (struct file): Add a builtin flag.
+	* file.c (enter_file): Unset the builtin flag.
+	(rehash_file): Ditto.
+	(print_file): Don't print builtin files if we've omitted them.
+	* default.c (undefine_default_variables): New function: go through
+	the default variables and undefine them.
+	(set_default_suffixes): Mark these suffix rules as builtin.
+	* makeint.h: Prototype.
+	* main.c (main): Handle addition of -r and -R to MAKEFLAGS in the
+	makefile.  Fixes Savannah bug #20501.
+
+	* main.c (define_makeflags): Assign o_env_override level to
+	MAKEFLAGS to ensure it's set even in the presence of -e.
+	Fixes Savannah bug #2216.
+
+	* makeint.h (TRACE_NONE, TRACE_RULE, TRACE_DIRECTORY): Define
+	constants for the trace mode.
+	* main.c: Add new --trace mode parsing.
+	(decode_trace_flags): New function.
+	(decode_switches): Call it.
+	(define_makeflags): Fix a bug with long-name options.
+	* misc.c (fatal): Remove special output-sync handling.
+	* make.1: Document new --trace mode flags.
+	* doc/make.texi (Options Summary): Ditto.
+
+2013-05-11  Eli Zaretskii  <eliz@gnu.org>
+
+	* job.c (child_out): Output the newline following the message
+	before fllush-ing the stream.  Avoids displaying the following
+	failure message, which goes to stderr, on the same line.
+
+2013-05-06  Eli Zaretskii  <eliz@gnu.org>
+
+	* gnumake.h (GMK_EXPORT) [_WIN32]: Move the dllexport declaration
+	here from makeint.h.
+
+	* makeint.h (GMK_BUILDING_MAKE) [WINDOWS32]: Define before
+	including gnumake.h.
+
+	* doc/make.texi (Loaded Object Example): Add a note about building
+	shared objects on MS-Windows.
+
+2013-05-05  Paul Smith  <psmith@gnu.org>
+
+	* makeint.h (OUTPUT_SYNC_LINE, OUTPUT_SYNC_RECURSE): Rename
+	output-sync options "job" to "line" and "make" to "recurse".
+	* main.c (decode_output_sync_flags): Ditto.
+	* job.c (reap_children): Ditto.
+	(start_job_command): Ditto.
+	* make.1: Ditto.
+	* doc/make.texi (Parallel Output): Ditto.
+
+	* job.c (child_out): Write newlines explicitly, and don't do
+	anything if the message is empty.
+	(sync_output): Put working dir messages around stdout AND stderr.
+	(start_job_command): Move the tmp file assignment earlier.  After
+	we do it, write the command line to the temp file to get the order
+	correct.
+
+	* misc.c (message): Remove special handling for output_sync.
+	(error): Ditto.
+
+2013-05-04  Paul Smith  <psmith@gnu.org>
+
+	* loadapi.c (gmk_alloc): New function.
+	* gnumake.h: Add gmk_alloc().  Clean GMK_EXPORT a bit to avoid MAIN.
+	* makeint.h (GMK_EXPORT): New handling, vs. MAIN.
+	* doc/make.texi (Loaded Object API): Add information on the memory
+	handling functions.
+	(Loaded Object Example): Create an example.
+
+	* job.c (pump_from_tmp): (Rename) Write to stdout/stderr using
+	FILE* rather than fd.  It's not a good idea to mix and match.
+
+2013-05-04  Eli Zaretskii  <eliz@gnu.org>
+
+	* makeint.h (ftruncate) [_MSC_VER]: Redirect to _chsize.
+	(_S_ISDIR): If not defined (MinGW64), define to S_ISDIR.
+
+2013-05-04  Paul Smith  <psmith@gnu.org>
+
+	* job.c (child_out): Handle EINTR and incomplete write scenarios.
+	(sync_init): New function: separate the initialization code.
+	(assign_child_tempfiles): Remove truncation from this function,
+	(sync_output): and add it here after output is generated.
+	(reap_children): Always call sync_output() in case output_sync was
+	reset after the child started, due to error.
+	(start_job_command): Create new sync_cmd variable.  Use new method
+	for initializing the handle.
+	If we're not syncing the output be sure any output we've saved is
+	dumped immediately before starting the child.
+
+2013-05-04  Eli Zaretskii  <eliz@gnu.org>
+
+	* job.c (start_job_command): Make the condition for creating a
+	temporary output file be identical to the Posix code branch.
+	Suggested by Frank Heckenbach <f.heckenbach@fh-soft.de>.
+
+2013-05-03  Eli Zaretskii  <eliz@gnu.org>
+
+	* w32/subproc/sub_proc.c: Include makeint.h.  Remove a private
+	incompatible prototype of xmalloc.
+	(batch_file_with_spaces): New function, detects Windows batch
+	files whose names include whitespace characters.
+	(process_begin): If exec_name is a batch file with whitespace
+	characters in its name, pass NULL as the first argument to
+	CreateProcess.  This avoids weird failures due to buggy quoting by
+	CreateProcess.  For the details, see the discussion starting at
+	http://lists.gnu.org/archive/html/make-w32/2013-04/msg00008.html.
+
+	* load.c (load_object, load_file): Accept an additional argument
+	DLP and return in it a pointer that can be used to unload the
+	dynamic object.
+
+	* read.c (eval): Call load_file with an additional argument, and
+	record the pointer returned there in the 'struct file' object of
+	dynamic objects in that object's 'struct file'.
+
+	* commands.c (execute_file_commands): Unload dynamic objects
+	before remaking them, to avoid failure to remake if the OS doesn't
+	allow overwriting objects that are in use.
+
+	* filedef.h (struct file): New member dlopen_ptr.
+
+	* gnumake.h (GMK_EXPORT): Define to dllexport/dllimport
+	decorations for Windows and to nothing on other platforms.
+	(gmk_eval, gmk_expand, gmk_add_function): Add GMK_EXPORT qualifier
+	to prototypes.
+
+	* makeint.h (MAIN): Define before including gnumake.h, to give
+	correct dllexport decorations to exported functions.
+	(load_file): Adjust prototype.
+
+	* loadapi.c: Don't include gnumake.h, since makeint.h already
+	includes it, and takes care of defining MAIN before doing so.
+
+	* build_w32.bat (LinkGCC): Produce an import library for functions
+	exported by Make for loadable dynamic objects.
+
+	* w32/compat/posixfcn.c (dlclose): New function.
+
+	* w32/include/dlfcn.h (dlclose): Add prototype.
+
+2013-05-01  Eli Zaretskii  <eliz@gnu.org>
+
+	* job.c (start_job_command) [WINDOWS32]: Make the same fix for
+	MS-Windows as the previous commit did for Posix platforms.
+	(construct_command_argv_internal): Don't treat a backslash as an
+	escape character before whitespace, if the shell is not a Posix
+	shell.   For the description of the problem, see
+	http://lists.gnu.org/archive/html/make-w32/2013-04/msg00014.html.
+
+2013-05-01  Paul Smith  <psmith@gnu.org>
+
+	* job.c (start_job_command): Don't redirect output for recursive
+	make jobs, unless we're in makefile synchronization mode.
+
+2013-04-30  Stefano Lattarini <stefano.lattarini@gmail.com>  (tiny change)
+
+	build: enable the 'silent-rules' automake options
+
+	* configure.ac (AM_INIT_AUTOMAKE): Here.  The future major Automake
+	version 2.0 (ETA about one, one and half year from now) will enable
+	it by default, so better prepare ourselves.
+
+2013-04-30  Stefano Lattarini <stefano.lattarini@gmail.com>  (tiny change)
+
+	build: require Autoconf >= 2.62 and Automake >= 1.11.1
+
+	Older versions of those tools should be considered fully obsolete.
+	Also, GNU make already requires Gettext >= 0.18.1, which has been
+	released six months after Automake 1.11.1 and two years after
+	Autoconf 2.62; so the new requirement shouldn't be problematic
+	for people already bootstrapping GNU make from the Git repository.
+
+	* configure.ac (AC_PREREQ): Require Autoconf 2.62 or later.
+	(AM_INIT_AUTOMAKE): Require Automake 1.11.1 or later (1.11 had
+	some serious bugs, and should not be used).
+
+2013-04-30  Stefano Lattarini <stefano.lattarini@gmail.com>  (tiny change)
+
+	build: get rid of 'HAVE_ANSI_COMPILER' C preprocessor conditional
+
+	GNU make already assume C89 or later throughout the codebase, and
+	that preprocessor conditional was no longer used anyway.
+
+	* configure.ac: Remove AC_DEFINE of HAVE_ANSI_COMPILER.
+	* config.ami.template: Remove #define of HAVE_ANSI_COMPILER.
+	* config.h-vms.template: Likewise.
+	* config.h.W32.template: Likewise.
+	* configh.dos.template: Likewise.
+
+2013-04-30  Stefano Lattarini <stefano.lattarini@gmail.com>  (tiny change)
+
+	cosmetics: fix few innocuous typos
+
+	Most of these were found using Lucas De Marchi's 'codespell' tool.
+
+	* ChangeLog: Fix minor typos.
+	* ChangeLog.2: Likewise.
+	* README.Amiga: Likewise.
+	* TODO.private: Likewise.
+	* function.c: Likewise.
+	* glob/glob.h: Likewise.
+	* job.c: Likewise.
+	* main.c: Likewise.
+	* readme.vms: Likewise.
+	* remake.c: Likewise.
+	* tests/ChangeLog: Likewise.
+	* tests/NEWS: Likewise.
+	* tests/README: Likewise.
+	* tests/scripts/variables/private: Likewise.
+	* vmsdir.h: Likewise.
+	* signame.c: Likewise.  While at it, improve line wrapping in the
+	touched comment.
+
+2013-04-29  Eli Zaretskii  <eliz@gnu.org>
+
+	* w32/include/dlfcn.h: New file.
+
+	* w32/compat/posixfcn.c: Include dlfcn.h.
+	(dlopen, dlerror, dlsym) [MAKE_LOAD]: New functions, in support of
+	dynamic loading.
+
+	* config.h.W32.template (MAKE_LOAD): Define.
+
+	* load.c (load_object) [HAVE_DOS_PATHS]: Support backslashes and
+	drive letters in file names of dynamic objects.
+
+	* job.c (construct_command_argv_internal) [WINDOWS32]: Return
+	right after generating new_argv for one_shell case.  This fixes
+	the Windows build for both Unixy shell and stock Windows shells.
+
+2013-04-28  Eli Zaretskii  <eliz@gnu.org>
+
+	* dir.c (local_stat) [WINDOWS32]: Use the wrapper on MS-Windows.
+	If the argument ends in "dir/.", make sure the parent dir exists
+	and is indeed a directory.  Fixes Savannah bug #37065.
+
+2013-04-28  Paul Smith  <psmith@gnu.org>
+
+	* makeint.h (message_s, error_s): Functions that print to strings
+	rather than directly to files.
+	* misc.c (message_s, error_s): Create them.
+	* job.c (child_error): Print error messages to the output sync
+	logs, if one exists, rather then directly to the terminal.
+	(reap_children): Move the per-line sync after child_error().
+
+	* configure.ac: Remove support for pre-ANSI variadic function calls.
+	* makeint.h: Ditto.
+	* misc.c: Ditto.
+	* config.ami.template: Ditto.
+	* config.h-vms.template: Ditto.
+	* config.h.W32.template: Ditto.
+	* configh.dos.template: Ditto.
+
+	Implement a "per-job" output synchronization option.
+
+	* main.c (decode_output_sync_flags): Recognize the new option.
+	* makeint.h (OUTPUT_SYNC_JOB): Add new values for "job"
+	* job.c (assign_child_tempfiles): In per-job mode, truncate the
+	temp file for re-use by the next job.
+	(sync_output): Don't close the temp files as we may still use them.
+	(free_child): Close the temp files here as we definitely don't
+	need them.
+	(new_job): In per-job output mode, sync_output() after each job.
+	* job.h (struct child): Avoid ifdefs.
+	* make.1: Add new options to the man page.
+	* doc/make.texi (Parallel Output): Break documentation on input
+	and output into separate sections for readability.  Document the
+	new "job" and "none" modes.
+
+2013-04-27  Paul Smith  <psmith@gnu.org>
+
+	* job.c (construct_command_argv_internal): Fix oneshell support
+	for non-POSIX-sh shells.
+
+	* load.c (load_object): Extract all POSIX-isms into a separate
+	function for portability.
+	(load_file): Check the .LOADED variable first and don't invoke
+	load_object() if it's already been loaded.
+
+2013-04-27  Eli Zaretskii  <eliz@gnu.org>
+
+	* read.c (record_files): Pay attention to .ONESHELL in MS-Windows.
+
+	* job.c (construct_command_argv_internal): Support .ONESHELL on
+	MS-Windows, when the shell is not a Unixy shell.
+
+2013-04-27  Eli Zaretskii  <eliz@gnu.org>
+
+	* job.c: Fix compilation error on GNU/Linux due to "label at end
+	of compound statement".
+
+2013-04-27  Frank Heckenbach <f.heckenbach@fh-soft.de>  (tiny change)
+
+	* job.c (sync_output): Don't discard the output if
+	acquire_semaphore fails; instead, dump the output unsynchronized.
+
+2013-04-27  Eli Zaretskii  <eliz@gnu.org>
+
+	Support --output-sync on MS-Windows.
+	* w32/compat/posixfcn.c: New file, with emulations of Posix
+	functions and Posix functionality for MS-Windows.
+
+	* w32/subproc/sub_proc.c: Include io.h.
+	(process_noinherit): New function, forces a file descriptor to not
+	be inherited by child processes.
+	(process_easy): Accept two additional arguments, and use them to
+	set up the standard output and standard error handles of the child
+	process.
+
+	* w32/include/sub_proc.h (process_easy): Adjust prototype.
+	(process_noinherit): Add prototype.
+
+	* read.c [WINDOWS32]: Include windows.h and sub_proc.h.
+
+	* makeint.h (LOCALEDIR) [WINDOWS32}: Define to NULL if not
+	defined.  This is needed because the MS-Windows build doesn't have
+	a canonical place for LOCALEDIR.
+	(WIN32_LEAN_AND_MEAN) [WINDOWS32]: Define, to avoid getting from
+	windows.h header too much stuff that could conflict with the code.
+
+	* main.c <sync_mutex>: New static variable.
+	<switches>: Add support for "--sync-mutex" switch.
+	(decode_output_sync_flags): Decode the --sync-mutex= switch.
+	(prepare_mutex_handle_string) [WINDOWS32]: New function.
+	(main): Add "output-sync" to .FEATURES.
+
+	* job.h (CLOSE_ON_EXEC) [WINDOWS32]: Define to call
+	process_noinherit.
+	(F_GETFD, F_SETLKW, F_WRLCK, F_UNLCK, struct flock) [WINDOWS32]:
+	New macros.
+	(RECORD_SYNC_MUTEX): New macro, a no-op for Posix platforms.
+	(sync_handle_t): New typedef.
+
+	* job.c <sync_handle>: Change type to sync_handle_t.
+	(FD_NOT_EMPTY): Seek to the file's end.  Suggested by Frank
+	Heckenbach <f.heckenbach@fh-soft.de>.
+	(pump_from_tmp_fd) [WINDOWS32]: Switch to_fd to binary mode for
+	the duration of this function, and then change back before
+	returning.
+	(start_job_command) [WINDOWS32]: Support output_sync mode on
+	MS-Windows.  Use a system-wide mutex instead of locking
+	stdout/stderr.  Call process_easy with two additional arguments:
+	child->outfd and child->errfd.
+	(exec_command) [WINDOWS32]: Pass two additional arguments, both
+	-1, to process_easy, to adjust for the changed function signature.
+
+	* function.c (windows32_openpipe) [WINDOWS32]: This function now
+	returns an int, which is -1 if it fails and zero otherwise.  It
+	also calls 'error' instead of 'fatal', to avoid exiting
+	prematurely.
+	(func_shell_base) [WINDOWS32]: Call perror_with_name if
+	windows32_openpipe fails, now that it always returns.  This avoids
+	a compiler warning that error_prefix is not used in the MS-Windows
+	build.
+
+	* config.h.W32.template (OUTPUT_SYNC): Define.
+
+	* build_w32.bat: Add w32/compat/posixfcn.c to compilation and
+	linking commands.
+
+2013-04-20  Stefano Lattarini <stefano.lattarini@gmail.com>  (tiny change)
+
+	* README.git: Our autoconf input file is 'configure.ac', not
+	'configure.in'.  Adjust accordingly.
+	* build_w32.bat: Likewise.
+	* config.h-vms.template: Likewise.
+	* Makefile.DOS.template: Likewise.
+
+2013-04-16  Paul Smith  <psmith@gnu.org>
+
+	* misc.c (open_tmpfd): Add a new function that returns a temporary
+	file by file descriptor.
+	(open_tmpfile): Move here from main.c.
+	* job.c (assign_child_tempfiles): Use the new open_tmpfd().
+
+2013-04-15  Paul Smith  <psmith@gnu.org>
+
+	* makeint.h (OUTPUT_SYNC_TARGET, OUTPUT_SYNC_MAKE): Rename.
+	* job.c (start_job_command): Use new constants.
+	* main.c: New -O argument format.
+
+	* doc/make.texi (Options Summary): Document the argument to -O.
+	* make.1: Ditto.
+
+	* main.c (define_makeflags): Don't add space between a single-char
+	option and its argument.
+
+2013-04-06  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Implicit Variables): Clarify LDFLAGS vs. LDLIBS.
+	Fixes Savannah bug #37970.
+
+	* remake.c (check_dep): Reconsider files waiting on prerequisites,
+	as they may have finished.  Fixes Savannah bug #37703.
+
+2013-02-28  Paul Smith  <psmith@gnu.org>
+
+	* function.c (func_realpath): On Solaris (at least) realpath() can
+	fail due to EINTR, so loop it.  Fixes Savannah bug #38420.
+
+2013-02-25  Paul Smith  <psmith@gnu.org>
+
+	Add a proposed supported API for GNU make loaded objects.
+
+	* doc/make.texi (Loaded Object API): Document it.
+	* Makefile.am (make_SOURCES): Add new loadapi.c.
+	* dep.h: Remove eval_buffer(); moved to loadapi.c:gmk_eval().
+	* read.c (eval_buffer): Change eval_buffer() signature.
+	* main.c (main): Change eval_buffer() signature.
+	* variable.h (define_new_function): Change func_ptr signature.
+	* load.c (SYMBOL_EXTENSION): Change the extension.
+	* loadapi.c: Implement the new API.
+	* gnumake.h (gmk_eval): New function prototype.
+	(gmk_expand) Ditto.
+	(gmk_add_function) Ditto.
+	* gmk-default.scm (gmk-eval): Remove: now implemented in guile.c.
+	* guile.c (guile_expand_wrapper): Use gmk_expand()
+	(guile_eval_wrapper): Implement eval here to avoid double-expansion.
+	(guile_define_module): Define gmk-eval.
+	(func_guile): Use new func_ptr calling model.
+	(guile_gmake_setup): Use gmk_add_function() to declare $(guile ...)
+	* function.c (function_table_entry): Provide alternative func_ptr.
+	(func_eval): New signature for eval_buffer();
+	(function_table_init): New initialization for function_table_entry.
+	(expand_builtin_function): Support alternative invocation signature.
+	(define_new_function): Ditto.
+
+2013-01-20  Paul Smith  <psmith@gnu.org>
+
+	* gnumake.h: New file to contain externally-visible content.
+	* makeint.h: Include gnumake.h.  Move gmk_floc type to gnumake.h.
+	* Makefile.am (include_HEADERS): Install the gnumake.h header.
+
+	* makeint.h: Change struct floc to gmk_floc typedef.
+	* Many: Use the new typedef.
+
+	* make.h: Rename to makeint.h.
+	* Many: Use the new name makeint.h.
+
+2013-01-19  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (load Directive): Update to discuss location of
+	loaded object file.
+	(Remaking Loaded Objects): Document remaking of loaded objects.
+
+	* main.c (main): Rename READ_MAKEFILES to READ_FILES.
+	* read.c: Change READ_MAKEFILES to READ_FILES since it now
+	contains loaded object files as well.
+	(read_all_makefiles): Ditto.
+	(eval_makefile): Ditto.
+	(eval): Add any loaded file to the READ_FILES list, so that it
+	will be considered for re-build.
+
+	* load.c (load_file): Return the simple filename (no symbol) in
+	the LDNAME argument (now a const char **).
+	This filename should no longer have "./" prepended: modify the
+	function to always check the current directory if the name has no
+	"/", before using the normal methods.
+	* make.h: Change the load_file() prototype.
+
+	* README.git: Add a bit more documentation on Git workflow & rules.
+
+2013-01-13  Paul Smith  <psmith@gnu.org>
+
+	* main.c (main): Restore all make flags after re-exec is complete.
+	Fixes Savannah bug #38051.
+
+2013-01-12  Paul Smith  <psmith@gnu.org>
+
+	Convert CVS archive to Git.
+
+	* configure.in: Rename to configure.ac.
+	* README.cvs: Rename to README.git and rework for Git.
+	* maintMakefile: Use git clean for cleanup.
+	* ChangeLog: Use new Git repository URL.
+	* ChangeLog.2: Ditto.
+	* Makefile.am: Change documentation for Git
+	* Makefile.DOS.template: Ditto.
+	* README.template: Ditto.
+	* build_w32.bat: Ditto.
+	* prepare_w32.bat: Ditto.
+	* .cvsignore: Rename to .gitignore, and change to Git format.
+
+2012-12-08  Eli Zaretskii  <eliz@gnu.org>
+
+	* job.c (create_batch_file): Fix last change: always increment the
+	counter of batch files before trying to use it.
+
+2012-12-07  Eli Zaretskii  <eliz@gnu.org>
+
+	* job.c (construct_command_argv_internal): Remove " from
+	sh_chars_dos[].  Ignore an escaped backslash inside a string
+	quoted with "..".  This lifts the 4KB or 8KB command-line length
+	limitation imposed by the Windows shells when a command uses quoted
+	strings, because we now don't call the shell in that case.
+
+	* job.c (create_batch_file): Declare the counter of batch files
+	static, to avoid having 2 jobs using the same file name and
+	stepping on each other's toes.  When all 64K names are used up,
+	make one more loop looking for slots that became vacant.  This
+	avoids leaving behind temporary batch files in the temporary
+	directory, which happens frequently on a fast machine when using
+	parallel builds.
+	(reap_children): Add debug message for when removal of a temporary
+	batch file fails.
+
+2012-10-29  Paul Smith  <psmith@gnu.org>
+
+	New feature: "load" directive for dynamically-loaded objects.
+
+	* NEWS: Document new "load" directive.
+	* doc/make.texi (Extending make): New chapter on extensions to make.
+	* configure.in: Check for dlopen/dlsym/dlerror and -ldl.
+	* Makefile.am (make_SOURCES): Add new file load.c.
+	* make.h: Prototype for load_file().
+	* main.c (main): Add "load" to .FEATURES if it's available.
+	* read.c (eval): Parse "load" and "-load" directives.
+
+2012-09-29  Paul Smith  <psmith@gnu.org>
+
+	* configure.in: Require a new version of gettext (1.18.1).
+	Fixes Savannah bug #37307.
+
+2012-09-09  Paul Smith  <psmith@gnu.org>
+
+	* configure.in (bsd_signal): Define _GNU_SOURCE, a la make.h.
+	Fixes Savannah bug #32247.
+
+	* remake.c (update_file_1): Force intermediate files to be
+	considered, not pruned, if their non-intermediate parent needs to
+	be remade.  Fixes Savannah bug #30653.
+
+	* job.c (construct_command_argv_internal): Keep the command line
+	on the heap for very long lines.  Fixes Savannah bug #36451.
+
+	* function.c (func_realpath): BSD realpath(3) doesn't fail if the
+	file does not exist: use stat.  Fixes Savannah bug #35919.
+
+	* file.c (expand_deps): Duplicate the current variable buffer, not
+	the old pointer.  Fixes Savannah bug #36925.
+
+	* read.c (eval): If we detect an initial UTF-8 BOM, skip it.
+	Fixes Savannah bug #36529.
+	(record_target_var): Remove unused variable "fname".
+	(eval): Use the correct pointer when adding to the variable buffer.
+	Fixes Savannah bug #36106.
+
+2012-09-09  Eli Zaretskii  <eliz@gnu.org>
+
+	* read.c (unescape_char): Fix a thinko in the last change.
+
+2012-09-09  Paul Smith  <psmith@gnu.org>
+
+	* default.c (default_variables): Use a correct default LIBPPATERNS
+	for MacOS.  Fixes Savannah bug #37197.
+
+	* read.c (record_files): Reset the default macro values if .POSIX
+	is set.  Fixes Savannah bug #37069.
+	(parse_file_seq): Break out of an infinite loop if we're not
+	making progress when parsing archive references.
+
+2012-09-01  Eli Zaretskii  <eliz@gnu.org>
+
+	* README.W32.template: Update for job-server and Guile support.
+
+	* read.c (unescape_char): Advance 'p' after copying the unescaped
+	characters.  Otherwise the backslashes are incorrectly erased from
+	the original string.
+
+2012-03-05  Paul Smith  <psmith@gnu.org>
+
+	Update copyright notices to use year ranges, as allowed by
+	clarifications in the GNU Maintainer's Manual.
+
+2012-03-04  Paul Smith  <psmith@gnu.org>
+
+	* read.c (unescape_char): New function to remove escapes from a char.
+	(record_files): Call it on the dependency string to unescape ":".
+	Fixes Savannah bug #12126 and bug #16545.
+
+	* make.h (CSTRLEN): Determine the length of a constant string.
+	* main.c: Use the new macro.
+	* read.c: Ditto.
+	* variable.h: Ditto.
+	* function.c: Simplify checks for function alternatives.
+
+	* expand.c (variable_append): If the current set is local and the
+	next one is not a parent, then treat the next set as
+	local as well.  Fixes Savannah bug #35468.
+
+2012-03-03  Paul Smith  <psmith@gnu.org>
+
+	* acinclude.m4 (AC_STRUCT_ST_MTIM_NSEC): Add support for AIX 5.2+
+	nanosecond timestamps.  Fixes Savannah bug #32485.
+
+	Convert uses of `foo' for quoting to 'foo' to reflect changes in
+	the GNU Coding Standards.  Fixes Savannah bug #34530.
+
+	* job.c (construct_command_argv_internal): In oneshell we need to
+	break the SHELLFLAGS up for argv.  Fixes Savannah bug #35397.
+
+	* function.c (func_filter_filterout): Recompute the length of each
+	filter word in case it was compressed due to escape chars.  Don't
+	reset the string as it's freed.  Fixes Savannah bug #35410.
+
+	* misc.c (collapse_continuations): Only use POSIX-style
+	backslash/newline handling if the .POSIX target is set.
+	Addresses Savannah bug #16670 without backward-incompatibility.
+	* NEWS: Document behavior change.
+	* doc/make.texi (Splitting Lines): New section describing how to
+	use backslash/newline to split long lines.
+
+2012-02-26  Paul Smith  <psmith@gnu.org>
+
+	* implicit.c (pattern_search): Check the stem length to avoid
+	stack overflows in stem_str.  Fixes Savannah bug #35525.
+
+2012-02-03  Eli Zaretskii  <eliz@gnu.org>
+
+	* w32/subproc/sub_proc.c (proc_stdin_thread, proc_stdout_thread)
+	(proc_stderr_thread, process_pipe_io): Ifdef away unused
+	functions.
+
+	* w32/subproc/w32err.c (map_windows32_error_to_string) [_MSC_VER]:
+	Don't use TLS storage for szMessageBuffer.  Ifdef away special
+	code for handling Winsock error codes.  Make the function return a
+	`const char *'.  Suggested by Ozkan Sezer.  Fixes Savannah bug #34832.
+
+2012-01-29  Paul Smith  <psmith@gnu.org>
+
+	* gmk-default.scm (to-string-maybe): Variables map to empty strings.
+	In Guile 2.0, (define ...) results in a variable object so make
+	sure that maps to an empty string in make.
+
+	* variable.c (parse_variable_definition): New POSIX assignment ::=
+	Take a struct variable to return more information after parsing.
+	(assign_variable_definition): New parse_variable_definition() call.
+	* variable.h: New declaration of parse_variable_definition().
+	* read.c (do_define): New parse_variable_definition() call.
+	(parse_var_assignment): Ditto.
+	(get_next_mword): Parse ::= as a variable assignment.
+	* doc/make.texi (Flavors): Describe the new ::= syntax.
+	* NEWS: Mention the ::= operator.
+
+	* variable.h (struct variable): Rearrange elts to reduce struct size.
+
+	* function.c (func_file): Create a new function, $(file ...)
+	* doc/make.texi (File Function): Document the $(file ..) function.
+	* NEWS: Announce it.
+
+	* gmk-default.scm (to-string-maybe): Use a more portable way to
+	test for unprintable characters.
+	* configure.in [GUILE]: Guile 1.6 doesn't have pkg-config
+	* build_w32.bat: Ditto.
+
+2012-01-28  Eli Zaretskii  <eliz@gnu.org>
+
+	* config.h.W32.template: Update from config.h.in.
+
+	Support a Windows build with Guile.
+
+	* README.W32.template: Update with instructions for building with
+	Guile.
+
+	* build_w32.bat: Support building with Guile.
+
+	* make.h [HAVE_STDINT_H]: Include stdint.h.
+
+	* main.c (main, clean_jobserver): Move declarations of variables
+	not used in the WINDOWS32 build to the #else branch, to avoid
+	compiler warnings.
+
+	Fix failures on MS-Windows when Make's standard handles are invalid.
+	This can happen when Make is invoked from a GUI application.
+
+	* w32/subproc/sub_proc.c (process_init_fd): Don't dereference
+	pproc if it is a NULL pointer.
+	(process_begin, process_cleanup): Don't try to close pipe handles
+	whose value is INVALID_HANDLE_VALUE.
+	(process_easy): Initialize hIn, hOut, and hErr to
+	INVALID_HANDLE_VALUE.  If DuplicateHandle fails with
+	ERROR_INVALID_HANDLE, duplicate a handle for the null device
+	instead of STD_INPUT_HANDLE, STD_OUTPUT_HANDLE or
+	STD_ERROR_HANDLE.  Don't try to close pipe handles whose value is
+	INVALID_HANDLE_VALUE.
+
+	* function.c (windows32_openpipe): Initialize hIn and hErr to
+	INVALID_HANDLE_VALUE.  If DuplicateHandle fails with
+	ERROR_INVALID_HANDLE, duplicate a handle for the null device
+	instead of STD_INPUT_HANDLE or STD_ERROR_HANDLE.  Fix indentation.
+	Don't try to close handles whose value is INVALID_HANDLE_VALUE.
+
+2012-01-25  Eli Zaretskii  <eliz@gnu.org>
+
+	* function.c (define_new_function): Fix format strings in calls to
+	`fatal'.
+
+2012-01-17  Paul Smith  <psmith@gnu.org>
+
+	* guile.c (func_guile): Handle NULL returns from Guile.
+
+2012-01-16  Paul Smith  <psmith@gnu.org>
+
+	* make.h (PATH_SEPARATOR_CHAR): Allow resetting for crosscompiling
+	for Windows.  Patch by Chris Sutcliffe <ir0nh34d@gmail.com>
+	Fixes Savannah bug #34818.
+
+2012-01-15  Paul Smith  <psmith@gnu.org>
+
+	* variable.h: Prototype an interface for defining new make functions.
+	* function.c (define_new_function): Define it.
+	(func_guile): Remove the "guile" function.
+	(function_table_init): Ditto.
+	* guile.c (func_guile): Add the "guile" function here.
+	(setup_guile): Call define_new_function() to define it.
+	(guile_eval_string): Obsolete.
+
+	* all: Update copyright notices.
+
+2012-01-12  Paul Smith  <psmith@gnu.org>
+
+	Support GNU Guile as an embedded extension language for GNU make.
+
+	* NEWS: Note the new Guile capability.
+	* Makefile.am (EXTRA_DIST, make_SOURCES): Add new guile source files.
+	(AM_CFLAGS): Add Guile compiler flags.
+	(guile): Add a rule for converting default SCM into a C header.
+	* configure.in: Add support for --with-guile.
+	Also, convert the entire file to properly escaped autoconf m4, and
+	utilize newer features such as AS_IF() and AS_CASE().
+	* doc/make.texi (Guile Function): Document the GNU guile integration.
+	* make.h (guile_eval_string, guile_boot): Prototypes for Guile.
+	* main.c (main): Run guile_boot() to handle main().
+	(real_main): All the previous content of main() is here.
+	(real_main): Add "guile" to the .FEATURES variable.
+	* function.c (func_guile): Call Guile.
+	* guile.c: New file implementing GNU make integration with GNU Guile.
+	* gmk-default.scm: The integration of GNU make with Guile uses
+	Guile itself for much of the parsing and conversion of return
+	types, etc.  This implementation is embedded into GNU make.
+	* config.h-vms.template: Disable Guile support.
+	* config.h.W32.template: Ditto.
+	* configh.dos.template: Ditto.
+	* config.ami.template: Ditto.
+	* makefile.vms: Add new Guile files.
+	* Makefile.DOS.template: Ditto.
+	* Makefile.ami: Ditto.
+	* NMakefile.template: Ditto.
+	* SMakefile.template: Ditto.
+	* build_w32.bat: Ditto.
+	* dosbuild.bat: Ditto.
+	* make_msvc_net2001.vcproj: Ditto.
+
+2011-11-15  Paul Smith  <psmith@gnu.org>
+
+	* main.c (main): Use %ld when printing DWORD values.
+	* job.c (new_job): Ditto.
+	* w32/include/sub_proc.h: Use const.
+	* w32/subproc/sub_proc.c (open_jobserver_semaphore): Use const.
+	Fixes Savannah bug #34830.  Changes suggested by Ozkan Sezer.
+
+	* configure.in (MAKE_JOBSERVER): Enable jobserver on W32 systems.
+	* config.h.W32.template (MAKE_JOBSERVER): Ditto.
+
+2011-11-14  Paul Smith  <psmith@gnu.org>
+
+	* read.c (eval): parse_file_seq() might shorten the string due to
+	backslash removal.  Start parsing again at the colon.
+	Fixes Savannah bug #33399.
+
+2011-11-13  Paul Smith  <psmith@gnu.org>
+
+	* file.c (file_timestamp_cons): Match up data types to avoid warnings.
+	* filedef.h: Ditto.
+	* misc.c (concat): Ditto.
+	* read.c (eval): Assign value to avoid warnings.
+	* function.c (func_shell_base): Use fork() instead of vfork() to
+	avoid warnings.
+	* make.h (INTEGER_TYPE_SIGNED): Use <=0 to avoid warnings.
+	Fixes Savannah bug #34608.
+
+	* job.c (construct_command_argv): Remove _p.
+	(construct_command_argv_internal): Remove _ptr.
+	Fixes Savannah bug #32567.
+
+	* main.c (clean_jobserver): Don't write the free token to the pipe.
+	Change suggested by Tim Newsome <tnewsome@aristanetworks.com>
+
+	* acinclude.m4 (AC_STRUCT_ST_MTIM_NSEC): Add support for Darwin.
+	* filedef.h (FILE_TIMESTAMP_STAT_MODTIME): Ditto.
+	Patch provided by Troy Runkel <Troy.Runkel@mathworks.com>
+
+2011-10-11  Troy Runkel  <Troy.Runkel@mathworks.com>
+
+	* config.h.W32: Enable job server support for Windows.
+	* main.c [WINDOWS32]: Include sub_proc.h
+	(main): Create a named semaphore to implement the job server.
+	(clean_jobserver): Free the job server semaphore when make is finished.
+	* job.c [WINDOWS32]: Define WAIT_NOHANG
+	(reap_children): Support non-blocking wait for child processes.
+	(free_child): Release job server semaphore when child process finished.
+	(job_noop): Don't define function on Windows.
+	(set_child_handler_action_flags): Don't define function on Windows.
+	(new_job): Wait for job server semaphore or child process termination.
+	(exec_command): Pass new parameters to process_wait_for_any.
+	* w32/include/sub_proc.h [WINDOWS32]: New/updated EXTERN_DECL entries.
+	* w32/subproc/sub_proc.c [WINDOWS32]: Added job server implementation.
+	(open_jobserver_semaphore): Open existing job server semaphore by name.
+	(create_jobserver_semaphore): Create new job server named semaphore.
+	(free_jobserver_semaphore): Close existing job server semaphore.
+	(acquire_jobserver_semaphore): Decrement job server semaphore count.
+	(release_jobserver_semaphore): Increment job server semaphore count.
+	(has_jobserver_semaphore): Returns whether job server semaphore exists.
+	(get_jobserver_semaphore_name): Returns name of job server semaphore.
+	(wait_for_semaphore_or_child_process): Wait for either the job server
+	semaphore to become signalled or a child process to terminate.
+	(process_wait_for_any_private): Support for non-blocking wait for child.
+	(process_wait_for_any): Added support for non-blocking wait for child.
+	(process_file_io): Pass new parameters to process_wait_for_any_private.
+
+2011-09-18  Paul Smith  <psmith@gnu.org>
+
+	* main.c (main): If we're re-exec'ing and we're the master make,
+	then restore the job_slots value so it goes back into MAKEFLAGS
+	properly.  See Savannah bug #33873.
+
+	* remake.c (library_search): STD_DIRS is computed when other
+	static vars like buflen etc. are computed, so it must be static
+	as well.  See Savannah bug #32511.
+
+2011-09-16  Paul Smith  <psmith@gnu.org>
+
+	* maintMakefile (do-po-update): Apparently we have to avoid
+	certificate checks on the http://translationproject.org site now.
+
+2011-09-12  Paul Smith  <psmith@gnu.org>
+
+	* read.c (eval): Ensure exported variables are defined in the
+	global scope.  Fixes Savannah bug #32498.
+
+2011-09-11  Paul Smith  <psmith@gnu.org>
+
+	* Makefile.am (dist-hook): Remove w32/Makefile and .deps/ from the
+	dist file.  Fixes Savannah bug #31489.
+
+	* doc/make.texi (Complex Makefile): Add a hint about using
+	#!/usr/bin/make (for Savannah support request #106459)
+
+2011-09-02  Paul Smith  <psmith@gnu.org>
+
+	* remake.c (touch_file): If we have both -n and -t, -n takes
+	precedence.  Patch from Michael Witten <mfwitten@gmail.com>
+
+2011-08-29  Paul Smith  <psmith@gnu.org>
+
+	* expand.c (variable_expand_string): Always allocate a new buffer
+	for a string we're expanding.  The string we're working on can get
+	freed while we work on it (for example if it's the value of a
+	variable which modifies itself using an eval operation).
+	See Savannah patch #7534 for the original report by Lubomir Rintel.
+
+2011-06-12  Paul Smith  <psmith@gnu.org>
+
+	* read.c (parse_file_seq): Move the check for empty members out of
+	the loop so we can go to the next member properly.
+	Another fix for Savannah bug #30612.
+
+	* config.h-vms.template: Newer versions of VMS have strncasecmp()
+	Patch provided by: Hartmut Becker <becker.ismaning@freenet.de>
+
+2011-05-07  Paul Smith  <psmith@gnu.org>
+
+	* expand.c (variable_append): Add a LOCAL argument to track
+	whether this is the first invocation or not.  If it's not and
+	private_var is set, then skip this variable and try the next one.
+	Fixes Savannah bug #32872.
+
+	* read.c (parse_file_seq): Ensure existence checks use glob().
+
+2011-05-07  Eli Zaretskii  <eliz@gnu.org>
+
+	* job.c (construct_command_argv_internal): Don't assume shellflags
+	is always non-NULL.  Escape-protect characters special to the
+	shell when copying the value of SHELL into new_line.  Fixes
+	Savannah bug #23922.
+
+2011-05-02  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Special Variables): Add documentation for the new
+	words in .FEATURES.  Fixes Savannah bug #32058.
+	(Flavor Function): Rewrite the section on the flavor function.
+	Fixes Savannah bug #31582.
+
+	* function.c (func_sort): Use the same algorithm to count the
+	number of words we will get after the split, as we use to split.
+	Based on a patch from Matthias Hopf.  Fixes Savannah bug #33125.
+
+	* make.h: Make global variable stack_limit extern.
+	Fixes Savannah bug #32753.
+
+2011-05-01  Paul Smith  <psmith@gnu.org>
+
+	* read.c (parse_file_seq): Don't try to invoke glob() unless there
+	are potential wildcard characters in the filename.  Performance
+	enhancement suggested by Michael Meeks <michael.meeks@novell.com>
+
+2011-04-29 Boris Kolpackov  <boris@codesynthesis.com>
+
+	* read.c (eval_makefile): Delay caching of the file name until after
+	all the expansions and searches.
+
+2011-04-17  David A. Wheeler  <dwheeler@dwheeler.com>
+
+	* doc/make.texi (Reading Makefiles): Document "!=".
+	(Setting): Ditto.
+	(Features): Ditto.
+	* variable.h (enum variable_flavor): New type "f_shell".
+	* variable.c (shell_result): Send a string to the shell and store
+	the output.
+	(do_variable_definition): Handle f_shell variables: expand the
+	value, then send it to the shell and store the result.
+	(parse_variable_definition): Parse "!=" shell assignments.
+	* read.c (get_next_mword): Treat "!=" as a varassign word.
+	* function.c (fold_newlines): If trim_newlines is set remove all
+	trailing newlines; otherwise remove only the last newline.
+	(func_shell_base): Move the guts of the shell function here.
+	(func_shell): Call func_shell_base().
+
+2011-02-21  Paul Smith  <psmith@gnu.org>
+
+	* strcache.c (various): Increase performance based on comments
+	from Ralf Wildenhues <Ralf.Wildenhues@gmx.de>.  Stop looking for
+	a buffer when we find the first one that fits, not the best fit.
+	If there is not enough free space in a buffer move it to a
+	separate list so we don't have to walk it again.
+	* make.h (NDEBUG): Turn off asserts unless maintainer mode is set.
+	(strcache_add_len, strcache_setbufsize): Use unsigned length/size.
+	* maintMakefile (AM_CPPFLAGS): Enable MAKE_MAINTAINER_MODE.
+
+	* remake.c (complain): Move translation lookups closer to use.
+
+2011-02-13  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi: Clean up references to "static" variables and
+	semicolon errors.  Patch from Michael Witten <mfwitten@gmail.com>.
+
+2010-12-27  Paul Smith  <psmith@gnu.org>
+
+	* make.1: Update the header/footer info in the man page.
+
+2010-11-28  Paul Smith  <psmith@gnu.org>
+
+	* read.c (record_target_var): Don't reset v if it's the same as
+	the global version.  Fixes Savannah bug #31743.
+
+2010-11-06  Paul Smith  <psmith@gnu.org>
+
+	* variable.c (print_auto_variable): Print auto variables; ignore others.
+	(print_noauto_variable): Print non-auto variables; ignore others.
+	(print_variable_set): Allow the caller to select which type to print.
+	(print_target_variables): Show all the non-auto variables for a target.
+
+	* default.c (install_default_suffix_rules): Initialize recipe_prefix.
+	* rule.c (install_pattern_rule): Ditto.
+	* read.c (record_files): Pass in the current recipe prefix.  Remember
+	it in the struct command for these targets.
+	(eval): Remember the value of RECIPEPREFIX when we start parsing.
+	Do not remove recipe prefixes from the recipe here: we'll do it later.
+	* job.c (start_job_command): Remove recipe prefix characters early,
+	before we print the output or chop it up.
+	* file.c (print_file): If recipe_prefix is not standard, reset it
+	in -p output.  Assign target variables in -p output as well.
+
+	* commands.c (chop_commands): Max command lines is USHRT_MAX.
+	Set any_recurse as a bitfield.
+	* make.h (USHRT_MAX): Define if not set.
+
+2010-10-27  Paul Smith  <psmith@gnu.org>
+
+	* commands.h (struct commands): Rearrange to make better use of
+	memory.  Add new recipe_prefix value.
+
+2010-10-26  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Setting): Document the treatment of
+	backslash-newline in variable values.
+	* misc.c (collapse_continuations): Do not collapse multiple
+	backslash-newlines into a single space.  Fixes Savannah bug #16670.
+
+2010-08-29  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Implicit Variables): Document LDLIBS and LOADLIBES.
+	Fixes Savannah bug #30807.
+	(Instead of Execution): Mention that included makefiles are still
+	rebuilt even with -n.  Fixes Savannah bug #30762.
+
+	* configure.in: Bump to 3.82.90.
+
+	* make.h: Add trace_flag variable.
+	* main.c (switches): Add --trace option.
+	(trace_flag): Declare variable.
+	* job.c (start_job_command): Show recipe if trace_flag is set.
+	(new_job): Show trace messages if trace_flag is set.
+	* doc/make.texi (Options Summary): Document the new --trace option.
+	* make.1: Add --trace documentation.
+	* NEWS: Mention --trace.
+
+	* job.c	(child_error): Show recipe filename/linenumber on error.
+	Also show "(ignored)" when appropriate even for signals/coredumps.
+	* NEWS: Mention file/linenumber change.
+
+	* main.c (main): Print version info when DB_BASIC is set.
+
+	* job.c (construct_command_argv_internal): If shellflags is not
+	set, choose an appropriate default value.  Fixes Savannah bug #30748.
+
+2010-08-27  Eli Zaretskii  <eliz@gnu.org>
+
+	* variable.c (define_automatic_variables) [__MSDOS__ || WINDOWS32]:
+	Remove trailing backslashes in $(@D), $(<D), etc., for consistency
+	with forward slashes.  Fixes Savannah bug #30795.
+
+2010-08-13  Paul Smith  <psmith@gnu.org>
+
+	* NEWS: Accidentally forgot to back out the sorted wildcard
+	enhancement in 3.82, so update NEWS.
+	Also add NEWS about the error check for explicit and pattern
+	targets in the same rule, added to 3.82.
+
+	* main.c (main): Add "oneshell" to $(.FEATURES) (forgot to add
+	this in 3.82!)
+
+	* read.c (parse_file_seq): Fix various errors parsing archives
+	with multiple objects in the parenthesis, as well as wildcards.
+	Fixes Savannah bug #30612.
+
+2010-08-10  Paul Smith  <psmith@gnu.org>
+
+	* main.c (main): Expand MAKEFLAGS before adding it to the
+	environment when re-exec'ing.  Fixes Savannah bug #30723.
+
+2010-08-07  Eli Zaretskii  <eliz@gnu.org>
+
+	* w32/subproc/build.bat: Make all 3 cl.exe compile command lines
+	use the same /I switches.  Fixes Savannah bug #30662.
+
+	* function.c (func_shell) [WINDOWS32]: Reset just_print_flag
+	around the call to construct_command_argv, so that a temporary
+	batch file _is_ created when needed for $(shell).
+	Fixes Savannah bug #16362.
+
+2010-08-07 Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	* configh.dos.template (HAVE_STRNCASECMP): Define.
+
+2010-07-28  Paul Smith  <psmith@gnu.org>
+
+	Version 3.82 released.
+
+	* configure.in: Change release version.
+	* NEWS: Change the date.
+
+	* read.c (parse_file_seq): Remove GLOB_NOSORT for
+	backward-compatibility.  We'll add it back in next release.
+	* NEWS: Note it.
+
+2010-07-24  Eli Zaretskii  <eliz@gnu.org>
+
+	* job.c (pid2str) [WINDOWS32]: Fix CPP conditionals for using %Id
+	format.
+
+2010-07-18  Paul Smith  <psmith@gnu.org>
+
+	* configure.in: Switch bsd_signal to AC_CHECK_DECLS() to make sure
+	we have a declaration.  Fixes Savannah bug #25713 (maybe?)
+	* doc/make.texi (Complex Makefile): Cleanup variable assignments.
+	(One Shell): New subsection for the .ONESHELL special target.
+
+	Patches by Ozkan Sezer <sezeroz@gmail.com>:
+
+	* misc.c (strncasecmp): Local implementation for systems without.
+	* config.h.W32.template (HAVE_STRNICMP): Define on Windows.
+	* configure.in: Check for strncasecmp/strncmpi/strnicmp.
+	* job.c [WINDOWS32]: Don't define dup2 on Windows.
+	(pid2str): Use "%Id" even with MSVC
+	(exec_command): Cast to pid_t when calling pid2str().
+	* w32/subproc/sub_proc.c [WINDOWS32]: Include config.h first.
+	Use stddef.h on MSVC to get intptr_t.
+	* w32/subproc/misc.c [WINDOWS32]: Include config.h first.
+	* w32/compat/dirent.c [WINDOWS32]: Include config.h first.
+	(readdir): Cast -1 to correct type for d_ino.
+	* w32/pathstuff.c [WINDOWS32]: Ensure make.h is included first.
+	* make.h [WINDOWS32]: Don't prototype alloca() on Windows.
+	Add configuration for strncasecmp().
+	* main.c (ADD_SIG) [WINDOWS32]: Avoid warnings in MSVC.
+	* config.h.W32.template [WINDOWS32]: Don't warn on unsafe
+	functions or variables.
+	* NMakefile.template [WINDOWS32]: Remove /MACHINE:I386.
+	* main.c (clean_jobserver): Cast due to MSVC brokenness.
+	(decode_switches): Ditto.
+	* vpath.c (construct_vpath_list): Ditto.
+	* rule.c (freerule): Ditto.
+	* ar.c (ar_glob): Ditto.
+
+2010-07-16  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* misc.c (concat): Fix buffer overrun.
+
+2010-07-12  Paul Smith  <psmith@gnu.org>
+
+	Update copyrights to add 2010.
+
+	* build_w32.bat: Support for MSVC Windows x86_64 builds.
+	* job.c: Don't define execve() on MSVC/64bit.
+	Patch by Viktor Szakats.  Fixes Savannah bug #27590.
+
+2010-07-12  Eli Zaretskii  <eliz@gnu.org>
+
+	* make.h (alloca) [!__GNUC__]: Don't define prototype.
+	(int w32_kill): Use pid_t for process ID argument.
+	Fixes Savannah bug #27809.
+
+2010-07-12  Paul Smith  <psmith@gnu.org>
+
+	Integrated new .ONESHELL feature.
+	Patch by David Boyce <dsb@boyski.com>.  Modified by me.
+
+	* NEWS: Add a note about the new feature.
+	* job.c (is_bourne_compatible_shell): Determine whether we're
+	using a standard POSIX shell or not.
+	(start_job_command): Accept '-ec' as POSIX shell flags.
+	(construct_command_argv_internal): If one_shell is set and we are
+	using a POSIX shell, remove "interior" prefix characters such as
+	"@", "+", "-".  Also treat "\n" as a special character when
+	choosing the slow path, if ONESHELL is set.
+	* job.h (is_bourne_compatible_argv): Define the new function.
+
+	* make.h (one_shell): New global variable to remember setting.
+	* main.c: Declare it.
+	* read.c (record_files): Set it.
+	* commands.c (chop_commands): If one_shell is set, don't chop
+	commands into multiple lines; just keep one line.
+
+2010-07-09  Eli Zaretskii  <eliz@gnu.org>
+
+	* w32/subproc/sub_proc.c: Include stdint.h.
+	(sub_process_t): Use intptr_t for file handles and pid_t for
+	process ID.
+	(process_pipes, process_init_fd, process_begin): Use intptr_t for
+	file handles and pid_t for process ID.  Fixes Savannah bug #27809.
+	Patch by Ozkan Sezer <sezeroz@gmail.com>
+
+	* function.c (abspath): Support absolute file names in UNC format.
+	Fixes Savannah bug #30312.
+
+	* job.c (pid2str) [WINDOWS32]: Don't use %Id with GCC < 4.x.
+	(exec_command) [WINDOWS32]: Use pid2str instead of non-portable
+	%Id.
+
+	* main.c (handle_runtime_exceptions): Use %p to print addresses,
+	to DTRT on both 32-bit and 64-bit hosts.  Savannah bug #27809.
+
+	* job.c (w32_kill, start_job_command, create_batch_file): Use
+	pid_t for process IDs and intptr_t for the 1st arg of
+	_open_osfhandle.
+	* function.c (windows32_openpipe): Use pid_t for process IDs and
+	intptr_t for the 1st arg of _open_osfhandle.
+	(func_shell): Use pid_t for process IDs.
+	* main.c (main) [WINDOWS32]: Pacify the compiler.
+	* config.h.W32.template (pid_t): Add a definition for 64-bit
+	Windows builds that don't use GCC.  Fixes Savannah bug #27809.
+	Patch by Ozkan Sezer <sezeroz@gmail.com>
+
+2010-07-07  Paul Smith  <psmith@gnu.org>
+
+	* configure.in: Bump to a new prerelease version 3.81.91.
+
+2010-07-06  Paul Smith  <psmith@gnu.org>
+
+	* main.c (main): Set a default value of "-c" for .SHELLFLAGS.
+	* NEWS: Mention the new behavior of .POSIX and the new .SHELLFLAGS
+	variable.
+	* job.c (construct_command_argv): Retrieve the .SHELLFLAGS value
+	and pass it to construct_command_argv_internal().
+	(construct_command_argv_internal): If .SHELLFLAGS is non-standard
+	use the slow path.  Use that value instead of hard-coded "-c".
+
+2010-07-05  Paul Smith  <psmith@gnu.org>
+
+	* implicit.c (pattern_search): lastslash can be const.
+	* dir.c (downcase): Remove unused variable.
+	* hash.c (hash_init): Cast sizeof for error message.
+	* arscan.c (ar_scan): Cast to char* for WINDOWS32.
+	(ar_member_touch): Ditto.
+	* ar.c (glob_pattern_p): Avoid symbol collision: open -> opened
+	* signame.c (strsignal): Ditto: signal -> sig
+	* job.c (create_batch_file): Ditto: error -> error_string
+	(pid2str): Portably convert a pid_t into a string
+	(reap_children): Use it.
+	(start_waiting_job): Use it.
+	Savannah bug #27809.  Patch by Ozkan Sezer <sezeroz@gmail.com>
+
+2010-07-03  Paul Smith  <psmith@gnu.org>
+
+	* read.c (parse_file_seq): All archive groups must end with ')' as
+	the LAST character in a word.  If there is no word ending in ')'
+	then it's not an archive group.  Fixes Savannah bug #28525.
+
+2010-07-01  Paul Smith  <psmith@gnu.org>
+
+	* main.c (main): Append optional features using separate calls.
+	Not as efficient but not all compilers allow conditionals inside
+	macro calls.  Fixes Savannah bug #29244.
+
+2010-01-10  Paul Smith  <psmith@gnu.org>
+
+	* make.h (patheq): Rename strieq() to patheq() for clarity.
+	* dir.c (dir_contents_file_exists_p): Use it.
+
+	* dir.c (file_impossible): Convert xmalloc/memset to xcalloc.
+	* file.c (enter_file): Ditto.
+	* job.c (new_job): Ditto.
+
+2009-12-11  Eli Zaretskii  <eliz@gnu.org>
+
+	* job.c (construct_command_argv_internal) <sh_cmds_dos>
+	[WINDOWS32]: Add "echo." and a few more commands that are built
+	into cmd.exe.  Fixes Savannah bug #28126.
+
+	* file.c (lookup_file) [HAVE_DOS_PATHS]: Treat '\\' like we do
+	with '/'.
+
+2009-11-15  Paul Smith  <psmith@gnu.org>
+
+	Patches for VMS provided by Hartmut Becker <Hartmut.Becker@hp.com>
+
+	* vmsjobs.c (ctrlYPressed) [VMS]: Deal with CTRL-Y.
+	(vmsHandleChildTerm) [VMS]: Ditto.
+	(astYHandler) [VMS]: Ditto.
+	(tryToSetupYAst) [VMS]: Ditto.
+	(child_execute_job) [VMS]: Ditto.
+
+	* vmsify.c (trnlog) [VMS]: Fix const errors.
+	(vmsify) [VMS]: Ditto.
+
+	* readme.vms [VMS]: Update with notes for 3.82.
+
+	* job.h (comname) [VMS]: Remember the temporary command filename
+
+	* dir.c (vmsify) [VMS]: Fix const errors.
+	(vms_hash) [VMS]: Ditto.
+	(vmsstat_dir) [VMS]: Ditto.
+	(find_directory) [VMS]: Fix case-insensitive option for VMS
+	(dir_contents_file_exists_p) [VMS]: Ditto.
+	(file_impossible) [VMS]: Ditto.
+
+	* config.h-vms.template (HAVE_FDOPEN) [VMS]: Have it.
+	(HAVE_STRCASECMP) [VMS]: Ditto.
+
+	* arscan.c (VMS_get_member_info) [VMS]: Fix timezone computation.
+	(ar_scan) [VMS]: Fix const error.
+
+2009-11-12  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* vpath.c (vpath_search, selective_vpath_search): Add index arguments
+	which allows the caller to get the index of the matching directory.
+
+	* make.h (vpath_search): Update prototype.
+
+	* remake.c (library_search): Implement linker-compatible library
+	search. Use the new VPATH_SEARCH index functionality to keep track
+	of the directory index for each match. Select the match with the
+	lowest directory index.
+
+	* implicit.c (pattern_search): Pass NULL for the index arguments in
+	the VPATH_SEARCH call.
+
+	* doc/make.texi (Directory Search for Link Libraries): Describe the
+	new search behavior.
+
+	* NEWS: Add a note about the new behavior.
+
+2009-10-25  Paul Smith  <psmith@gnu.org>
+
+	* AUTHORS, et.al.: Update copyright years.
+
+	* implicit.c (stemlen_compare): Fix qsort() compare bug that
+	caused implicit rules with equal stem lengths to be sorted
+	indeterminately.
+
+2009-10-24  Paul Smith  <psmith@gnu.org>
+
+	* main.c (usage): Add --eval to the usage string.
+	(switches): Add the --eval switch.
+	(main): If --eval is given, add them to the simply-expanded variable
+	-*-eval-flags-*- (necessary to allow recursion to work properly).
+	(define_makeflags): Add -*-eval-flags-*- to MAKEFLAGS.
+
+	* NEWS: Describe the new --eval command line argument.
+	* doc/make.texi (Options Summary): Document --eval.
+
+	* dep.h: eval_buffer() returns void.
+	* read.c (eval_buffer): Ditto.
+	(eval): Ditto.
+
+	* variable.h (define_variable_cname): New macro for constant
+	variable names.
+	* default.c (set_default_suffixes): Use it.
+	* main.c (main): Ditto.
+	(handle_non_switch_argument): Ditto.
+	(define_makeflags): Ditto.
+	* read.c (read_all_makefiles): Ditto.
+	* variable.c (define_automatic_variables): Ditto.
+
+	* commands.c (dep_hash_cmp): Avoid casts.
+	(dep_hash_1): Ditto.
+	(dep_hash_2): Ditto.
+
+2009-10-22  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* read.c (read_all_makefiles): Mark the default makefile dependency
+	dontcare.
+
+2009-10-07  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* read.c (do_undefine): Free the expanded variable name.
+
+	* commands.c (dep_hash_cmp, set_file_variables): Move the order-only
+	to normal upgrade logic from  dep_hash_cmp to set_file_variables.
+
+2009-10-06  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* dep.h (uniquize_deps): Remove.
+
+	* read.c (uniquize_deps): Merge into set_file_variables in
+	commands.c.
+	(dep_hash_1, dep_hash_2, dep_hash_cmp): Move to commands.c.
+
+	* commands.c (set_file_variables): Avoid modifying the dep
+	chain to achieve uniqueness. Fixes savannah bug 25780.
+
+	* implicit.c (pattern_search): Instead of re-setting all automatic
+	variables for each rule we try, just update $*.
+
+2009-10-06  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* variable.h (undefine_variable_in_set): New function declaration.
+	(undefine_variable_global): New macro.
+
+	* variable.c (undefine_variable_in_set): New function implementation.
+
+	* read.c (vmodifiers): Add undefine_v modifier.
+	(parse_var_assignment): Parse undefine.
+	(do_undefine): Handle the undefine directive.
+	(eval): Call do_undefine if undefine_v is set.
+
+	* main.c (.FEATURES): Add a keyword to indicate the new feature.
+
+	* doc/make.texi (Undefine Directive): Describe the new directive.
+
+	* NEWS: Add a note about the new directive.
+
+2009-10-05  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* implicit.c (pattern_search): Initialize file variables only
+	if we need to parse a rule that requires the second expansion.
+
+2009-10-03  Paul Smith  <psmith@gnu.org>
+
+	* make.h: Include <alloca.h> even on systems where __GNUC__ is
+	defined.  Not sure why it was done the other way.
+	Requested by David Boyce <dsb@boyski.com>.
+
+2009-09-30  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* dep.h (dep): Add the DONTCARE bitfield.
+
+	* filedef.h (file):Add the NO_DIAG bitfield.
+
+        * read.c (eval_makefile): Set the DONTCARE flag in struct dep,
+	not struct file (a file can be a dependency of many targets,
+	some don't care, some do).
+
+	* remake.c (update_goal_chain): Propagate DONTCARE from struct
+	dep to struct file before updating the goal and restore it
+	afterwards.
+	(update_file): Don't prune the dependency graph if this target
+	has failed but the diagnostics hasn't been issued.
+	(complain): Scan the file's dependency graph to find the file
+	that caused the failure.
+	(update_file_1): Use NO_DIAG instead of DONTCARE to decide
+	whether to print diagnostics.
+
+	Fixes Savannah bugs #15110, #25493, #12686, and #17740.
+
+2009-09-28  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Pattern Intro): Move the match algorithm
+	discussion into the "Pattern Match" node.
+	(Pattern Match): Expand on the pattern rule matching algorithm.
+
+2009-09-28  Andreas Buening  <andreas.buening@nexgo.de>
+
+	* job.c (construct_command_argv_internal) [OS2]: Don't eat too
+	much of the command line on a single pass.
+
+2009-09-28  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* varible.c (create_pattern_var): Insert variables into the
+	PATTERN_VARS list in the shortest patterns first order.
+
+	* implicit.c (tryrule): Add STEMLEN and ORDER members. These are
+	used to sort the rules.
+	(stemlen_compare): Compare two tryrule elements.
+	(pattern_search): Sort the rules so that they are in the shortest
+	stem first order.
+
+	* main.c (.FEATURES): Add a keyword to indicate the new behavior.
+
+	* doc/make.texi (Pattern-specific Variable Values): Describe the
+	new pattern-specific variables application order.
+	(Introduction to Pattern Rules): Describe the new pattern rules
+	search order.
+
+	* NEWS: Add a note about the new behavior.
+
+2009-09-27  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Double-Colon): Mention that pattern rules with
+	double-colons have a different meaning.  Savannah bug #27497.
+
+2009-09-27  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	* configh.dos.template: Remove unconditional definition of
+	SYS_SIGLIST_DECLARED.
+	Include <sys/version.h> because ports of GCC 4.3.0 and later no
+	longer include it, so macros like __DJGPP_MINOR__ are no longer
+	defined automatically.
+
+	* Makefile.DOS.template (INCLUDES): Use $(prefix) and the
+	corresponding variables to define LIBDIR, INCLUDEDIR and LOCALEDIR
+	instead of using the hardcoded ones.
+	(SUBDIRS): doc subdir added.
+	(INFO_DEPS, DVIS): Values changed to 'make.info' and 'make.dvi'.
+	(TEXI2HTML, TEXI2HTML_FLAGS): Removed.  Use makeinfo --html to
+	create html formated docs.  texi2html may not be ported to DOS.
+	(make.info, make.dvi, make.ps, make.html): Make targets depend on
+	'make.texi'.
+	(.texi.info, .texi, .texi.dvi): Now invoked recursively.  Change
+	-I switch to look in ./ instead of ./doc.
+	(html): Target depend on html-recursive instead of make_1.html.
+	(make_1.html): Removed.
+	(mostlyclean-aminfo): Use $(srcdir)/doc instead of ./ as prefix.
+	(all-recursive): Allow for more than one subdir in the build
+	process.
+	(mostlyclean-recursive, clean-recursive, distclean-recursive)
+	(maintainer-clean-recursive, check-recursive): Enter in doc/ too.
+	(tags-recursive): Allow for more than one subdir in the build
+	process.
+	(info-recursive, dvi-recursive, ps-recursive, html-recursive): New
+	targets.  Enter into doc/ to produce the targets.
+	(all-am): $(INFO_DEPS) replaced by info.
+
+2009-09-26  Paul Smith  <psmith@gnu.org>
+
+	* read.c (record_files): Use free_ns() to free struct nameseq.
+	(eval): Ditto.
+
+	* rule.c (freerule): Use free_dep_chain().
+
+	* read.c (record_files): Free FILENAMES chain for implicit rules.
+	(eval): Static pattern targets go into the string cache.
+
+	* function.c (string_glob): Free NAME in the nameseq chain.
+
+2009-09-25  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* implicit.c (pattern_search): Terminate early if we haven't
+	found any rules to try (performance improvement).
+
+2009-09-25  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* implicit.c (pattern_search): Merge three parallel arrays,
+	TRYRULES, MATCHES, and CHECKED_LASTSLASH, into one array
+	of struct TRYRULE. In the old version the latter two arrays
+	had insufficient length.
+
+2009-09-24  Paul Smith  <psmith@gnu.org>
+
+	* implicit.c (pattern_search): Add back support for order-only
+	prerequisites for secondary expansion implicit rules, that were
+	accidentally dropped.  If we find a "|", enable order-only mode
+	and set IGNORE_MTIME on all deps that are seen afterward.
+	(pattern_search): Fix memory leaks: for intermediate files where
+	we've already set the file variable and pattern variable sets, be
+	sure to either save or free them as appropriate.
+
+2009-09-23  Paul Smith  <psmith@gnu.org>
+
+	Rework the way secondary expansion is stored, for efficiency.
+	This changes secondary expansion so that ONLY WHEN we know we have
+	a possibility of needing secondary expansion, do we defer the
+	secondary expansion.  This means more parsing the deps but we use
+	a lot less memory (due to the strcache).  Also, this fixes
+	Savannah bug #18622.
+
+	* read.c (eval): Don't parse the dep string here anymore.
+	(record_files): Take the dep argument as an unparsed string.  If
+	secondary expansion is enabled AND the prereq string has a '$' in
+	it, then set NEED_2ND_EXPANSION and keep the entire string.
+	Otherwise, parse the dep string here to construct the dep list
+	with the names in the strcache.
+
+	* misc.c (copy_dep_chain): For NEED_2ND_EXPANSION, we need to
+	duplicate the name string (others are in the strcache).
+
+	* implicit.c: Remove struct idep and free_idep_chain(): unused.
+	(struct patdeps): New structure to store prereq information.
+	(pattern_search): Use the NEED_2ND_EXPANSION flag to determine
+	which prerequisites need expansion, and expand only those.
+
+	* file.c (split_prereqs): Break parse_prereqs() into two parts: this
+	and enter_prereqs().  split_prereqs() takes a fully-expanded string
+	and splits it into a DEP list, handling order-only prereqs.
+	(enter_prereqs): This function enters a list of DEPs into the file
+	database.  If there's a stem defined, expand any pattern chars.
+	(expand_deps): Only try to expand DEPs which have NEED_2ND_EXPANSION
+	set.  Use the above functions.
+	(snap_deps): Only perform second expansion on prereqs that need it,
+	as defined by the NEED_2ND_EXPANSION flag.
+	(print_prereqs): New function to print the prereqs
+	(print_file): Call print_prereqs() rather than print inline.
+
+	* hash.h (STRING_COMPARE): Take advantage of strcache() by
+	comparing pointers.
+	(STRING_N_COMPARE): Ditto.
+	(ISTRING_COMPARE): Ditto.
+
+	* dep.h (PARSE_FILE_SEQ): New macro to reduce casts.
+	(parse_file_seq): Return void*
+	* read.c (parse_file_seq): Return void*.
+	(eval): Invoke macroized version of parse_file_seq()
+	* default.c (set_default_suffixes): Ditto.
+	* file.c (split_prereqs): Ditto.
+	* function.c (string_glob): Ditto.
+	* main.c (main): Ditto.
+	* rule.c (install_pattern_rule): Ditto.
+
+	* filedef.h: Add split_prereqs(), enter_prereqs(), etc.
+
+2009-09-16  Paul Smith  <psmith@gnu.org>
+
+	* misc.c (alloc_dep, free_dep): Now that we have xcalloc(),
+	convert to macros.
+	* dep.h: Create alloc_dep() / free_dep() macros.
+
+	* implicit.c (pattern_search): Take advantage of the new
+	parse_file_seq() to add the directory prefix to each prereq.
+
+	* dep.h: Remove multi_glob() and enhance parse_file_seq() to do it
+	all.  Avoid reversing chains.  Support adding prefixes.
+	* read.c (parse_file_seq): Rewrite to support globbing.  Allow for
+	cached/non-cached results.
+	(eval): Remove multi_glob() & invoke new parse_file_seq().
+	* rule.c (install_pattern_rule): Ditto.
+	* main.c (main): Ditto.
+	* implicit.c (pattern_search): Ditto.
+	* function.c (string_glob): Ditto.
+	* file.c (parse_prereqs): Ditto.
+	* default.c (set_default_suffixes): Ditto.
+
+	* variable.c (parse_variable_definition): Don't run off the end of
+	the string if it ends in whitespace (found with valgrind).
+
+	* commands.c (set_file_variables): Keep space for all targets in
+	$? if -B is given (found with valgrind).
+
+2009-09-15  Paul Smith  <psmith@gnu.org>
+
+	* misc.c (concat): Make concat() variadic so it takes >3 arguments.
+	(xcalloc): Add new function.
+	* make.h: New declarations.
+
+	* ar.c (ar_glob_match): New calling method for concat().
+	* main.c (main): Ditto.
+	(decode_env_switches): Ditto.
+	* read.c (eval_makefile): Ditto.
+	(tilde_expand): Ditto.
+	(parse_file_seq): Ditto.
+	* variable.c (target_environment): Ditto.
+	(sync_Path_environment): Ditto.
+
+	* ar.c (ar_glob_match): Use xcalloc().
+	* dir.c (file_impossible): Ditto.
+	* file.c (enter_file): Ditto.
+	* job.c (new_job): Ditto.
+	* read.c (parse_file_seq): Ditto.
+	* vmsfunctions.c (opendir): Ditto.
+
+2009-09-14  Rafi Einstein  <rafi.einstein@gmail.com>  (tiny patch)
+
+	* w32/subproc/sub_proc.c (process_begin): Check *ep non-NULL
+	inside the loop that looks up environment for PATH.
+
+2009-08-31  Eli Zaretskii  <eliz@gnu.org>
+
+	* function.c (windows32_openpipe): Update envp after calling
+	sync_Path_environment.
+
+2009-08-02  Paul Smith  <psmith@gnu.org>
+
+	* remake.c (notice_finished_file): Ensure file->cmds is not null
+	before looping through them.  Fixes Savannah bug #21824.
+
+	* doc/make.texi (Wildcard Examples): Clarify when objects is
+	wildcard-expanded.  Fixes Savannah bug #24509.  Patch by Martin Dorey.
+	(Include): Clarify the behavior of -include.
+	Fixes Savannah bug #18963.
+
+2009-08-01  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Catalogue of Rules): Clarify where -c, -F,
+	etc. come on the command line.  Fixes Savannah bug #27093.
+
+	* expand.c (expand_argument): If the argument is large enough use
+	xmalloc() instead of alloca().  Fixes Savannah bug #27143.
+
+	* variable.c (do_variable_definition): Avoid using alloca() to
+	hold values, which can be large.  Fixes Savannah bug #23960.
+
+	* job.c (new_job): Use memmove() instead of strcpy() since both
+	pointers are in the same memory block.  Fixes Savannah bug #27148.
+	Patch by Petr Machata.
+
+2009-07-29  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+        * job.c (construct_command_argv_internal): Add "ulimit" and
+        "unset" to the sh_cmds for Unixy shells.
+
+2009-07-29  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+        * configure.in: Move side-effects outside AC_CACHE_VAL arguments
+        that set make_cv_sys_gnu_glob, so they are also correctly set
+        when the cache has been populated before.
+
+2009-07-04  Eli Zaretskii  <eliz@gnu.org>
+
+	* function.c (func_realpath) [!HAVE_REALPATH]: Require the file to
+	exist, as realpath(3) does where it's supported.
+
+2006-07-04  Eli Zaretskii  <eliz@gnu.org>
+
+	* function.c (IS_ABSOLUTE, ROOT_LEN): New macros.
+	(abspath): Support systems that define HAVE_DOS_PATHS (have
+	drive letters in their file names).  Use IS_PATHSEP instead of a
+	literal '/' comparison.  Fixes Savannah bug #26886.
+
+2009-06-14  Paul Smith  <psmith@gnu.org>
+
+	* remake.c (update_file_1): Remember the original file we marked
+	as updating, so we can clear that flag again.  If we find a target
+	via vpath, FILE might change.
+	(check_dep): Ditto.  Fixes Savannah bug #13529.
+	Patch by Reid Madsen <reid.madsen@tek.com>.
+
+2009-06-13  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (MAKEFILES Variable): Be explicit that files
+	included by MAKEFILES cannot give default goals.
+	* read.c (eval): If set_default is not set, pass the no-default-goal
+	value when we read included makefiles.  Fixes Savannah bug #13401.
+
+	* ar.c (ar_name): Ensure that targets with empty parens aren't
+	considered archive member references: archive members must have a
+	non-empty "member" string.  Fixes Savannah bug #18435.
+
+	* function.c (string_glob): Rely on multi_glob() to determine
+	whether files exist or not.  Remove call to file_exists_p() which
+	is not always correct.  Fixes Savannah bug #21231.
+	* read.c (multi_glob): Add a new argument EXISTS_ONLY; if true
+	then only files that really exist will be returned.
+	* dep.h: Add new argument to multi_glob().
+	* rule.c (install_pattern_rule): Ditto.
+	* read.c (eval): Ditto.
+	* main.c (main): Ditto.
+	* implicit.c (pattern_search): Ditto.
+	* file.c (parse_prereqs): Ditto.
+	* default.c (set_default_suffixes): Ditto.
+
+2009-06-09  Paul Smith  <psmith@gnu.org>
+
+	* commands.c (set_file_variables): If always_make_flag is set,
+	always add the prereq to $?.  Fixes Savannah bug #17825.
+
+	* remake.c (update_file_1): When rebuilding deps of FILE, also try
+	to rebuild the deps of all the also_make targets for that file.
+	Fixes Savannah bug #19108.
+
+	* implicit.c (pattern_search): Undo test for is_target, added by
+	BorisK on 21 Sep 2004.  This goes against step 5c in the "Implicit
+	Rule Search Algorithm".  Fixes Savannah bug #17752.
+
+	* main.c (clean_jobserver): Clear the jobserver_fds options and
+	set job_slots to the default when we clean up.
+	(define_makeflags): Return the new MAKEFLAGS value.
+	(main): Reset MAKEFLAGS in the environment when we re-exec.
+	Fixes Savannah bug #18124.
+
+2009-06-08  Paul Smith  <psmith@gnu.org>
+
+	* read.c (eval): Collapse continuations post-semicolon on target-
+	specific variables.  Fixes Savannah bug #17521.
+
+2009-06-07  Paul Smith  <psmith@gnu.org>
+
+	* job.c (reap_children): For older systems without waitpid() (are
+	there any of these left?) run wait(2) inside EINTRLOOP to handle
+	EINTR errors.  Fixes Savannah bug #16401.
+
+	* (various): Debug message cleanup.  Fixes Savannah bug #16469.
+
+	* main.c: Fix bsd_signal() typedef.  Fixes Savannah bug #16473.
+
+	* file.c (snap_deps): Set SNAPPED_DEPS at the start of snapping,
+	not the end, to catch second expansion $(eval ...) defining new
+	target/prereq relationships during snap_deps.
+	Fixes Savannah bug #24622.
+
+	* read.c (record_files): The second-expansion "f->updating" hack
+	was not completely correct: if assumed that the target with
+	commands always had prerequisites; if one didn't then the ordering
+	was messed up.  Fixed for now to use f->updating to decide whether
+	to preserve the last element in the deps list... but this whole
+	area of constructing and reversing the deps list is too confusing
+	and needs to be reworked.  Fixes Savannah bug #21198.
+
+2009-06-06  Paul Smith  <psmith@gnu.org>
+
+	* hash.c (hash_insert): Remove useless test for NULL.
+	Fixes Savannah bug #21823.
+
+	* make.h: Move SET_STACK_SIZE determination to make.h.
+	* main.c (main): New global variable, STACK_LIMIT, holds the
+	original stack limit when make was started.
+	* job.c (start_job_command): Reset the stack limit, if we changed it.
+	Fixes Savannah bug #22010.
+
+	* remake.c (check_dep): Only set the target's state to not-started
+	if it's not already running.  Found this while testing -j10 builds
+	of glibc: various targets were being rebuilt multiple times.
+	Fix from Knut St. Osmundsen; fixes a problem reported in Savannah
+	bug #15919.
+
+	* read.c (multi_glob): Don't pass GLOB_NOCHECK to glob(3); instead
+	handle the GLOB_NOMATCH error.  This is to work around Sourceware.org
+	Bugzilla bug 10246.
+
+2009-06-04  Paul Smith  <psmith@gnu.org>
+
+	* read.c (eval): Skip initial whitespace (ffeed, vtab, etc.)
+
+	* maintMakefile: Modify access of config and gnulib Savannah
+	modules to use GIT instead of CVS.
+
+	* main.c (main): Initialize the LENGTH field in SHELL_VAR.
+	Fixes Savannah bug #24655.
+
+	* read.c (eval_buffer): Don't dereference reading_file if it's NULL;
+	this can happen during some invocations of $(eval ...) for example.
+	Fixes Savannah bug #24588.  Patch by Lars Jessen <ljessen@ljessen.dk>
+
+2009-06-02  Paul Smith  <psmith@gnu.org>
+
+	* configure.in: Check for fileno()
+	* read.c (eval_makefile): If fileno() is available, set CLOSE_ON_EXEC
+	for the makefile file so invocations of $(shell ...) don't inherit it.
+	Fixes Savannah bug #24277.
+
+2009-06-01  Paul Smith  <psmith@gnu.org>
+
+	* main.c (main): The previous fix for .DEFAULT_GOAL had issues;
+	expansion was handled incorrectly.  Rework the default goal
+	handling to save the variable only.  Remove default_goal_file and
+	default_goal_name.
+	* read.c (eval): Check default_goal_var, not default_goal_name.
+	* read.c (record_target_var): Don't check default_goal_file here.
+
+2009-05-31  Paul Smith  <psmith@gnu.org>
+
+	* main.c (main): Expand the .DEFAULT_GOAL variable before using
+	it, and if the multi_glob() returns nothing (say it expanded to
+	nothing but spaces) then don't crash.  Fixes Savannah bug #25697.
+
+	* doc/make.texi (Quick Reference): Add $(if ..), $(or ..), and
+	$(and ..) to the reference.  Fixes Savannah bug #25694.
+
+	* make.1: Be clear that some recipes will be executed even with -n.
+	* doc/make.texi: Ditto.  Fixes Savannah bug #25460.
+
+	* doc/make.texi (Override Directive): Make more clear how
+	overrides and appends interact.
+	Elucidates part of Savannah bug #26207.
+
+	* read.c (record_target_var): Don't reset the origin on
+	target-specific variables; try_variable_definition() will handle
+	this correctly.  Fixes Savannah bug #26207.
+
+	* maintMakefile (do-po-update): Copy PO files into $(top_srcdir).
+	Fixes Savannah bug #25712.
+
+	* implicit.c (pattern_search): Keep a pointer to the beginning of
+	the filename and save that instead of the constructed pointer.
+	Fixes Savannah bug #26593.
+	Patch by Mark Seaborn <mrs@mythic-beasts.com>
+
+2009-05-30  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Multi-Line): Add a description of the new abilities
+	of define/endef.  Rename "Sequences" to "Multi-Line" and fix some
+	"command sequence" vs. "recipe" syntax.
+	* read.c (do_define): Modify to allow assignment tokens (=, :=, etc.)
+	after a define, to create variables with those flavors.
+
+2009-05-25  Paul Smith  <psmith@gnu.org>
+
+	Reworked the parser for variable assignments to allow multiple
+	modifiers, and in any order.  Also allows variable and
+	prerequisites to be modifier names ('export', 'private', etc.)
+
+	* NEWS: Add notes about user-visible changes.
+
+	* read.c (struct vmodifiers): Remember what modifiers were seen.
+	(parse_var_assignment): New function to parse variable assignments.
+	(eval): Call the new function.  Handle variable assignments earlier.
+
+	* variable.c (parse_variable_definition): Only parse; don't create var.
+	(assign_variable_definition): Call parse, then create the var.
+
+2009-05-24  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi: Fix the ISBN for the GNU make manual.  Incorrect
+	value noticed by Hans Stol <hans.stol@nc3a.nato.int>.
+
+2009-03-14  Eli Zaretskii  <eliz@gnu.org>
+
+	* w32/pathstuff.c (convert_Path_to_windows32): Fix last change.
+	Fixes Savannah bug #25412.
+
+	* w32/subproc/sub_proc.c <top level>: Update Copyright years.  Add
+	prototype for xmalloc.
+	(find_file): Accept 3 arguments PATH_VAR, FULL_FNAME, and FULL_LEN
+	instead of an LPOFSTRUCT pointer.  Use xmalloc instead of malloc.
+	Loop over an array of extensions, instead of duplicating the same
+	code inline.  Use SearchPath followed by CreateFile, instead of
+	the obsolete OpenFile.  Fixes Savannah bug #17277.
+	(process_begin): Find $(PATH) in `envp', and pass a pointer to it
+	to `find_file'.  Fixes Savannah bug #25662.
+
+2009-03-07  Eli Zaretskii  <eliz@gnu.org>
+
+	* function.c (func_shell): Don't close pipedes[1] if it is -1.
+	Fixes Savannah bug #20495.
+
+2009-02-28  Ralf Wildenhues  <address@hidden>
+
+        * doc/make.texi (Instead of Execution): Document interaction of
+        -t with phony targets.
+
+2009-02-23  Ramon Garcia  <ramon.garcia.f@gmail.com>
+
+	Introduce a new keyword "private" which applies to target-specific
+	variables and prevents their values from being inherited.
+
+	* variable.h (struct variable): Add private_var flag to each variable.
+	Add a flag to specify which list entry switches to the parent target.
+	* variable.c (define_variable_in_set): Initialize private_var flag.
+	(lookup_variable): Skip private variables in parent contexts.
+	(initialize_file_variables): Set next_is_parent appropriately.
+	(print_variable): Show the private_var flag.
+	* read.c (eval): Recognize the private keyword.
+	(record_target_var): Set private_var.
+	* doc/make.texi (Suppressing Inheritance): Add documentation.
+
+2008-10-26  Paul Smith  <psmith@gnu.org>
+
+	* configure.in: Check for strndup().
+	* misc.c (xstrndup): Rename savestring to xstrndup.  Use strndup
+	if it's available.
+	* make.h: Rename savestring to xstrndup.
+	* commands.c (chop_commands): Ditto.
+	* function.c (func_foreach): Ditto.
+	* read.c (eval, record_files): Ditto.
+	* variable.c (define_variable_in_set): Ditto.
+
+2008-09-30  Eli Zaretskii  <eliz@gnu.org>
+
+	* build_w32.bat (GCCBuild): Use "-gdwarf-2 -g3" instead of
+	"-gstabs+ -ggdb3".
+
+	* w32/subproc/build.bat (GCCBuild): Likewise.
+
+2008-09-30  David Russo  <d-russo@ti.com>  (tiny change)
+
+	* job.c (construct_command_argv_internal): Avoid extra backslash
+	in batch-mode Unixy shells.  Under DB_JOBS, display the contents
+	of the batch file.
+
+2008-05-31  Eli Zaretskii  <eliz@gnu.org>
+
+	* README.W32.template: Remove obsolete text about non-support for
+	-jN without Unixy shell.  Remove obsolete text about not supplying
+	Visual Studio project files (we do supply them).  Modify text to
+	prefer GCC builds to MSC builds.
+
+2008-04-02  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* doc/make.texi (Empty Targets): Fix typo.
+
+2008-03-27  Paul Smith  <psmith@gnu.org>
+
+	Fix Savannah bug #22379:
+	* ar.c (ar_glob_match): Zero the allocated structure.
+	* read.c (parse_file_seq): Ditto.
+
+2008-03-08  Brian Dessent  <brian@dessent.net>
+
+	* maintMakefile: Update Translation Project location.
+
+2008-01-26  Eli Zaretskii  <eliz@gnu.org>
+
+	* variable.c (target_environment): Don't use shell_var if its
+	`value' field is NULL.
+
+2007-12-22  Eli Zaretskii  <eliz@gnu.org>
+
+	Suggested by Juan Manuel Guerrero <juan.guerrero@gmx.de>:
+
+	* Makefile.DOS.template (info_TEXINFOS): Remove unused variable.
+	(TEXINFOS): Value changed to `doc/make.texi'.
+	(.SUFFIXES): Use .texi instead of .texinfo.
+	(make.info, make.dvi): Depend on doc/make.texi.
+	(.texi.info): New target, instead of ".texinfo.info".  Change -I
+	switch to $(MAKEINFO) to look in doc/.  Use --no-split.
+	(.texi): New target, instead of ".texinfo".  Change -I switch to
+	$(MAKEINFO) to look in doc/.  Use --no-split.
+	(.texi.dvi): New target, instead of ".texinfo.dvi".  Change -I
+	switch to $(MAKEINFO) to look in doc/.
+	(install-info-am, uninstall-info): Don't look for "*.i[0-9]" and
+	"*.i[0-9][0-9]" (due to --no-split above).
+	(noinst_TEXINFOS, TEXI2HTML, TEXI2HTML_FLAGS): New variables.
+	(html, make_1.html): New targets.
+	(.PHONY): Add "html".
+	(.SUFFIXES): Add .html.
+
+2007-12-22  Juan Manuel Guerrero  <juan.guerrero@gmx.de>  (tiny change)
+
+	* configh.dos.template [__DJGPP__]: Replace HAVE_SYS_SIGLIST with
+	HAVE_DECL_SYS_SIGLIST.
+
+	* job.c (child_execute_job): Remove __MSDOS__ because MSDOS/DJGPP
+	build does not use child_execute_job.
+
+	* variable.c (define_automatic_variables) [__MSDOS__]: Always
+	export the SHELL environment variable to the child.
+
+2007-12-22  Eli Zaretskii  <eliz@gnu.org>
+
+	* config.h.W32: Include sys/types.h.
+	[!_PID_T_] (pid_t): Define only if not already defined by sys/types.h.
+
+	* vpath.c (construct_vpath_list) [HAVE_DOS_PATHS]: Support VPATH
+	values that use `:' in drive letters, when PATH_SEPARATOR_CHAR is
+	also `:'.
+
+2007-11-04  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi: Convert references to "commands", "command
+	lines", and "command script" to "recipe".
+	* NEWS: Ditto.
+	* commands.c, file.c, job.c, remake.c, read.c, variable.c, main.c:
+	Ditto.
+
+2007-10-27  Bruno Haible  <bruno@clisp.org>
+
+	* remake.c (f_mtime): Print time difference values between 100 and
+	ULONG_MAX in fixed-point notation rather than in exponention notation.
+
+2007-10-12  Eli Zaretskii  <eliz@gnu.org>
+
+	* variable.c (do_variable_definition): Allow $(SHELL) to expand to
+	a more complex value than a simple shell: if it's not a default
+	shell now then expand it and see if is a default shell then.
+
+2007-10-10  Eli Zaretskii  <eliz@gnu.org>
+
+	* dir.c (find_directory) [WINDOWS32]: Remove trailing slashes from
+	pathnames, with const strings.
+	* build_w32.bat [WINDOWS32]: If no config.h.W32 exists, create one
+	from the template (used for building from CVS, not a dist).
+
+2007-10-10  Paul Smith  <psmith@gnu.org>
+
+	* make.h: Add a prototype for w32_kill() (change suggested by
+	Yongwei Wu <wuyongwei@gmail.com>).
+
+2007-09-21  Eli Zaretskii  <eliz@gnu.org>
+
+	* w32/pathstuff.c (convert_Path_to_windows32): Handle quoted
+	directories in Path.
+
+2007-09-12  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi: Applied wording cleanups from Savannah patch #6195.
+	Provided by Diego Biurrun <diego@biurrun.de>
+	(Complex Makefile): Remove .PHONY setting for tar: patch #6196.
+	Provided by Diego Biurrun <diego@biurrun.de>
+
+2007-09-11  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Special Variables): Moved this into the "How to
+	Use Variables" chapter.  Added a table entry for .RECIPEPREFIX.
+	(MAKEFILE_LIST) No longer a section; this was added into the
+	"Special Variables" section.
+	(Rule Introduction): Reference .RECIPEPREFIX.
+	(Simple Makefile): Ditto.
+	(Rule Syntax): Ditto.
+	(Command Syntax): Ditto.
+	(Error Messages): Ditto.
+
+2007-09-10  Paul Smith  <psmith@gnu.org>
+
+	* commands.c (print_commands): Don't print an extra line in the
+	command scripts.  Prefix the command scripts with cmd_prefix, not \t.
+
+	* read.c (construct_include_path): Add the full string to the cache; we
+	were chopping the last char.
+
+	* NEWS: Announce the .RECIPEPREFIX special variable.
+	* variable.c (lookup_special_var): Rename from handle_special_var().
+	(lookup_variable): Call the new name.
+	(set_special_var): New function: handle setting of special variables.
+	When setting .RECIPEPREFIX, reset the cmd_prefix global variable.
+	(do_variable_definition): Call it.
+	* make.h (RECIPEPREFIX_DEFAULT): Define the default command prefix char.
+	(RECIPEPREFIX_NAME): Define the command prefix special variable name.
+	* main.c (main): Create the .RECIPEPREFIX special variable.
+	* read.c (eval): Remove the cmd_prefix characters from the command
+	scripts here, so they're not stored in the commands array at all,
+	rather than waiting and stripping them out during command construction.
+	* job.c (construct_command_argv_internal): Don't skip cmd_prefix here.
+
+2007-08-15  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (GNU Free Documentation License): The fdl.texi
+	file has had the section info removed, so add some to make.texi
+	before we include it.
+
+2007-08-15  Icarus Sparry  <savannah@icarus.freeuk.com>
+
+	* remake.c (check_dep): Reset the target state for intermediate
+	files.  They might have been considered before but not updated
+	then (order-only for example) but they will be this time.
+	Fixes Savannah bug #'s 3330 and 15919.
+
+2007-07-21  Eli Zaretskii  <eliz@gnu.org>
+
+	Fix Savannah bug #20549:
+	* function.c (func_shell): Call construct_command_argv with zero
+	value of FLAGS.
+	* job.c (construct_command_argv_internal): New argument FLAGS; all
+	callers changed.
+	[WINDOWS32]: If FLAGS has the COMMANDS_RECURSE bit set, ignore
+	just_print_flag.
+	* job.h (construct_command_argv_internal): Update prototype.
+
+2007-07-13  Paul Smith  <psmith@gnu.org>
+
+	* file.c (expand_deps): Use variable_buffer as the start of the
+	buffer, not the original pointer (in case it was reallocated).
+	Fix suggested by Rafi Einstein <rafi.einstein@formalism-labs.com>.
+	Fixes Savannah bug #20452.
+
+2007-07-04  Paul Smith  <psmith@gnu.org>
+
+	* (ALL FILES): Update to GPLv3.
+	* (ALL FILES): Update copyright for 2007.
+
+	* main.c (print_version): Move the host type info to the second line.
+
+2007-06-29  Thiemo Seufer  <ths@mips.com>
+
+	* maintMakefile: Update Translation Project location.
+
+2007-06-13  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Reading Makefiles): "Expansion of deferred" ->
+	"Expansion of a deferred"
+	Fixes Savannah bug #20018.
+
+	* expand.c (variable_expand_for_file): Preserve the value of
+	reading_file rather than setting it to 0 at the end.
+	Fixes Savannah bug #20033.
+
+2007-05-11  Paul Smith  <psmith@gnu.org>
+
+	* job.c (new_job): Add debug info to specify where make found the
+	command script it is running to build a target.
+	Fixes Savannah bug #18617.
+
+	* default.c (default_suffixes,default_suffix_rules,default_variables):
+	Add support for Objective C.  Fixes Savannah bug #16389.
+	Based on a patch provided by Peter O'Gorman <peter@pogma.com>.
+
+	* function.c (func_lastword): Initialize p.
+
+	* doc/make.texi (Eval Function, Implicit Variables, Special Targets):
+	Doc fixes noticed by Bob <twobanjobob@sbcglobal.net>.  Patch from
+	Dave Korn <dave.korn@artimi.com>
+
+2007-05-08  Paul Smith  <psmith@gnu.org>
+
+	Fix Savannah bug #19656:
+
+	* configure.in: Check for strcasecmp(), strcmpi(), and stricmp().
+
+	* make.h: Change all case-insensitive string compares to use
+	strcasecmp() (from POSIX).  If we don't have that but do have one
+	of the others, define strcasecmp to be one of those instead.  If
+	we don't have any, declare a prototype for our own version.
+
+	* misc.c (strcasecmp): Use this if we can't find any native
+	case-insensitive string comparison function.
+	* vmsfunctions.c: Remove strcmpi(); we'll use misc.c:strcasecmp().
+	* main.c (find_and_set_default_shell): Use strcasecmp() instead of
+	strcmpi().
+	* job.c (_is_unixy_shell, construct_command_argv_internal): Use
+	strcasecmp() instead of stricmp().
+	* hash.h (ISTRING_COMPARE, return_ISTRING_COMPARE): Use strcasecmp()
+	instead of strcmpi().
+	* acinclude.m4: Remove the strcasecmp() check from here.
+
+2007-03-21  Paul Smith  <psmith@gnu.org>
+
+	* configure.in: Don't turn on case-insensitive file system support
+	if --disable-... is given.  Fixes Savannah bug #19348.
+
+2007-03-19  Paul Smith  <psmith@gnu.org>
+
+	* ALL: Use the strcache for all file name strings, or other
+	strings which we will never free.  The goal is to save memory by
+	avoiding duplicate copies of strings.  However, at the moment this
+	doesn't save much memory in most situations: due to secondary
+	expansion we actually save prerequisite lists twice (once before
+	the secondary expansion, and then again after it's been parsed
+	into individual file names in the dep list).  We will resolve this
+	in a future change, by doing the parsing up-front for targets
+	where secondary expansion is not set.
+
+	Moving things into the strcache also allows us to use const
+	pointers in many more places.
+
+2007-01-03  Paul Smith  <psmith@gnu.org>
+
+	* make.h (ENULLLOOP): Reset errno after each failed invocation of
+	the function, not just the first.  Fixes Savannah bug #18680.
+
+2006-11-18  Paul Smith  <psmith@gnu.org>
+
+	* strcache.c (strcache_add_len): Don't allocate a new buffer
+	unless the string is not already nil-terminated.  Technically this
+	is a violation of the standard, since we may be passed an array
+	that is not long enough to test one past.  However, in make this
+	is never true since we only use nil-terminated strings or
+	sub-strings thereof.
+
+	* read.c (eval, do_define): Use cmd_prefix instead of '\t'.
+
+	* main.c: New global cmd_prefix, defaults to '\t'.
+	* job.c (construct_command_argv_internal): Use cmd_prefix instead
+	of '\t'.
+
+	* dir.c: Constified.
+	(dir_contents_file_exists_p): Check for an error return	from
+	readdir(), just in case.
+
+	* commands.c: Constified.
+	* default.c: Constified.
+	* expand.c: Constified.
+	* function.c: Partial constification.
+	* variable.c: Partial constification.
+	* vmsify.c: Constification.  Hard to test this but I hope I didn't
+	screw it up!
+	* vpath.c: Partial constification.
+	* w32/pathstuff.c: Partial constification.
+
+2006-11-16  Eli Zaretskii  <eliz@gnu.org>
+
+	* main.c (main) [HAVE_DOS_PATHS]: Treat DOS style argv[0] with
+	backslashes and drive letters as absolute.
+
+2006-10-22  Paul Smith  <psmith@gnu.org>
+
+	* main.c (struct command_switch): Use const and void*.
+
+2006-10-21  Paul Smith  <psmith@gnu.org>
+
+	* ar.c: Constified.
+	* arscan.c: Constified.
+
+2006-09-30  Paul Smith  <psmith@gnu.org>
+
+	* doc/make.texi (MAKEFILE_LIST Variable): Modify reference to
+	point to lastword since the example was updated.
+	Fixes Savannah bug #16304.
+	(Secondary Expansion): Correct example description.
+	Fixes Savannah bug #16468.
+	(Makefile Contents): Clarify that comments cannot appear within
+	variable references or function calls.
+	Fixes Savannah bug #16577.
+	(Special Targets): Clarify how .NOTPARALLEL works in recursion.
+	Fixes Savannah bug #17701.
+	Reported by Ralf Wildenhues <Ralf.Wildenhues@gmx.de>:
+	(Prerequisite Types): Added an example of using	order-only
+	prerequisites.  Fixes Savannah bug #17880.
+	(Rule Syntax): "lise" -> "list"
+	(Multiple Rules): ... -> @dots{}
+	(Splitting Lines): ditto.
+
+	* remake.c (update_file_1): Prereqs that don't exist should be
+	considered changed, for the purposes of $?.
+	Fixes Savannah bug #16051.
+
+	* make.1: Remove extraneous "+".
+	Fixes Savannah bug #16652.
+
+2006-09-06  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Include sys/types.h when checking for sys/wait.h.
+
+2006-08-18  Eli Zaretskii  <eliz@gnu.org>
+
+	* configure.in (PATH_SEPARATOR_CHAR): Define to the value of
+	$PATH_SEPARATOR.
+
+	* make.h (PATH_SEPARATOR_CHAR): Define only if still undefined.
+	Normally, it is defined in config.h.
+
+	* config/dospaths.m4 <ac_cv_dos_paths>: Define to yes on Cygwin as
+	well.
+
+	* job.c (construct_command_argv_internal) [HAVE_DOS_PATHS]: Define
+	sh_chars_sh for Windows platforms that emulate Unix.
+
+2006-05-07  Paul D. Smith  <psmith@gnu.org>
+
+	* README.OS2.template: Updates provided by Andreas Buening
+	<andreas.buening@nexgo.de>.
+
+2006-04-30  Paul D. Smith  <psmith@gnu.org>
+
+	* make.h: Include <direct.h> if HAVE_DIRECT_H.
+	* config.h.W32.template (HAVE_DIRECT_H): Set it if it's available.
+
+2006-04-26  Paul D. Smith  <psmith@gnu.org>
+
+	* README.cvs: Add a reminder to notify the GNU translation robot.
+
+	* doc/make.texi: Change @direcategory (requested by Karl Berry).
+
+2006-04-20  Paul D. Smith  <psmith@gnu.org>
+
+	* maintMakefile (po-check): Use Perl instead of grep -E, for systems
+	that don't have extended grep.
+	(cvsclean): Use $(PERL) instead of perl.
+
+2006-04-09  Paul D. Smith  <psmith@gnu.org>
+
+	* maintMakefile: Add some extra warning options (GCC 4.1 only?)
+
+	* expand.c, implicit.c, main.c, read.c: Rename variables so that
+	inner-scope variables don't mask outer-scope variables.
+
+	* ar.c, arscan.c, commands.c, default.c, dir.c, expand.c, file.c:
+	* function.c, getloadavg.c, implicit.c, job.c, main.c, misc.c, read.c:
+	* remake.c, remote-cstms.c, rule.c, strcache.c, variable.c:
+	* vmsfunctions.c, vmsify.c, vpath.c: Remove all casts of returned
+	values from memory allocation functions: they return void* and so
+	don't need to be cast.  Also remove (char *) casts of arguments to
+	xrealloc().
+
+	* configure.in: Remove checks for memcpy/memmove/strchr.
+
+	* make.h: Remove bcmp/bcopy/bzero/strchr/strrchr macros.
+
+	* ar.c, arscan.c, commands.c, dir.c: Convert all bzero/bcopy/bcmp
+	calls to memset/memcpy/memmove/memcmp calls.
+	* expand.c, file.c, function.c, getloadavg.c, implicit.c: Ditto.
+	* job.c, main.c, misc.c, read.c, remake.c, rule.c: Ditto.
+	* variable.c, vpath.c: Ditto.
+
+	* make.h (EXIT_FAILURE): Should be 1, not 0.
+
+2006-04-06  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Removed AM_C_PROTOTYPES.  Starting now on we
+	require an ISO C 1989 standard compiler and runtime library.
+
+	* Makefile.am: Remove the ansi2knr feature.
+
+	* make.h: Remove the PARAMS() macro definition and all uses of it.
+
+	* amiga.h, ar.c, arscan.c: Remove all uses of the PARAMS() macro.
+	* commands.c, commands.h, config.h-vms.template: Ditto.
+	* dep.h, dir.c, expand.c, filedef.h, function.c: Ditto.
+	* implicit.c, job.c, job.h, main.c, read.c, remake.c: Ditto.
+	* rule.c, rule.h, variable.h, vmsdir.h, vmsjobs.c, vpath.c: Ditto.
+
+	* NEWS: Update.
+
+2006-04-01  Paul D. Smith  <psmith@gnu.org>
+
+	Version 3.81 released.
+
+	* NEWS: Updated for 3.81.
+
+	* README.cvs: Mention that vpath builds are not supported out of
+	CVS.  Fixes Savannah bug #16236.
+	Remove update of make.texi from the list of things to do; we use
+	version.texi now.
+
+2006-03-26  Paul D. Smith  <psmith@gnu.org>
+
+	* doc/make.texi: Clean up licensing.  Use @copying and version.texi
+	support from automake, as described in the Texinfo manual.
+
+2006-03-25  Eli Zaretskii  <eliz@gnu.org>
+
+	* implicit.c (pattern_search) [HAVE_DOS_PATHS]: Don't compare b
+	with lastslash, since the latter points to filename, not to
+	target.
+	* job.c (construct_command_argv_internal) [HAVE_DOS_PATHS]:
+	Declare and define sh_chars_sh[].
+
+2006-03-23  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Look for build.sh.in in $srcdir so it will be
+	built for remote configurations as well.
+
+	* Makefile.am: Make sure to clean up build.sh during distclean.
+	Fixes Savannah bug #16166.
+
+	* misc.c (log_access): Takes a const char *.
+	* function.c (fold_newlines): Takes an unsigned int *.
+	Both fixes for Savannah bug #16170.
+
+2006-03-22  Boris Kolpackov  <boris@kolpackov.net>
+
+	* implicit.c (pattern_search): Call set_file_variables only
+	if we have prerequisites that need second expansion. Fixes
+	Savannah bug #16140.
+
+2006-03-19  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (update_file): Add alloca(0) to clean up alloca'd
+	memory on hosts that don't support it directly.
+
+	* README.cvs: Add information on steps for making a release (to
+	make sure I don't forget any).
+
+	* main.c (clean_jobserver): Move jobserver cleanup code into a new
+	function.
+	(die): Cleanup code was removed from here; call the new function.
+	(main): If we are re-execing, clean up the jobserver first so we
+	don't leak file descriptors.
+	Reported by Craig Fithian <craig.fithian@citigroup.com>
+
+2006-03-17  Paul D. Smith  <psmith@gnu.org>
+
+	* maintMakefile (do-po-update): Rewrite this rule to clean up and
+	allow multiple concurrent runs.
+	Patch from Joseph Myers <joseph@codesourcery.com>
+
+2006-03-17  Boris Kolpackov  <boris@kolpackov.net>
+
+	* dep.h (struct dep): Add the stem field.
+	* misc.c (alloc_dep, free_dep): New functions.
+	(copy_dep_chain): Copy stem.
+	(free_dep_chain): Use free_dep.
+	* read.c (record_files): Store stem in the dependency line.
+	* file.c (expand_deps): Use stem stored in the dependency line. Use
+	free_dep_chain instead of free_ns_chain.
+	* implicit.c (pattern_search): Use alloc_dep and free_dep.
+	* read.c (read_all_makefiles, eval_makefile, eval): Ditto.
+	* main.c (main, handle_non_switch_argument): Ditto.
+	* remake.c (check_dep): Ditto.
+	* rule.c (convert_suffix_rule, freerule): Ditto.
+
+2006-03-14  Paul D. Smith  <psmith@gnu.org>
+
+	* expand.c (variable_append): Instead of appending everything then
+	expanding the result, we expand (or not, if it's simple) each part
+	as we add it.
+	(allocated_variable_append): Don't expand the final result.
+	Fixes Savannah bug #15913.
+
+2006-03-09  Paul Smith  <psmith@gnu.org>
+
+	* remake.c (update_file_1): Revert the change of 3 Jan 2006 which
+	listed non-existent files as changed.  Turns out there's a bug in
+	the Linux kernel builds which means that this change causes
+	everything to rebuild every time.  We will re-introduce this fix
+	in the next release, to give them time to fix their build system.
+	Fixes Savannah bug #16002.
+	Introduces Savannah bug #16051.
+
+	* implicit.c (pattern_search) [DOS_PATHS]: Look for DOS paths if
+	we *don't* find UNIX "/".
+	Reported by David Ergo <david.ergo@alterface.com>
+
+2006-03-04  Eli Zaretskii  <eliz@gnu.org>
+
+	* variable.c (do_variable_definition) [WINDOWS32]: Call the shell
+	locator function find_and_set_default_shell if SHELL came from the
+	command line.
+
+2006-02-20  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (merge_variable_set_lists): It's legal for *setlist0
+	to be null; don't core in that case.
+
+2006-02-19  Paul D. Smith  <psmith@gnu.org>
+
+	* commands.c (set_file_variables): Realloc, not malloc, the static
+	string values to avoid memory leaks.
+
+	* expand.c (recursively_expand_for_file): Only set reading_file to
+	an initialized value.
+
+	* implicit.c (pattern_search): We need to make a copy of the stem
+	if we get it from an intermediate dep, since those get freed.
+
+	* file.c (lookup_file) [VMS]: Don't lowercase special targets that
+	begin with ".".
+	(enter_file) [VMS]: Ditto.
+	Patch provided by Hartmut Becker <Hartmut.Becker@hp.com>.
+
+2006-02-24  Eli Zaretskii  <eliz@gnu.org>
+
+	* job.c (construct_command_argv_internal): Fix last change.
+
+	* w32/subproc/sub_proc.c (process_pipe_io): Make dwStdin,
+        dwStdout, and dwStderr unsigned int: avoids compiler warnings in
+        the calls to _beginthreadex.
+
+	* expand.c (recursively_expand_for_file): Initialize `save' to
+        prevent compiler warnings.
+
+2006-02-18  Eli Zaretskii  <eliz@gnu.org>
+
+        * job.c (construct_command_argv_internal): Don't create a temporary
+	script/batch file if we are under -n.  Call _setmode to switch the
+	script file stream to text mode.
+
+2006-02-17  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (merge_variable_set_lists): Don't try to merge the
+	global_setlist.  Not only is this useless, but it can lead to
+	circularities in the linked list, if global_setlist->next in one
+	list gets set to point to another list which also ends in
+	global_setlist.
+	Fixes Savannah bug #15757.
+
+2006-02-15  Paul D. Smith  <psmith@gnu.org>
+
+	Fix for Savannah bug #106.
+
+	* expand.c (expanding_var): Keep track of which variable we're
+	expanding.  If no variable is being expanded, it's the same as
+	reading_file.
+	* make.h (expanding_var): Declare it.
+	* expand.c (recursively_expand_for_file): Set expanding_var to the
+	current variable we're expanding, unless there's no file info in
+	it (could happen if it comes from the command line or a default
+	variable).  Restore it before we exit.
+	* expand.c (variable_expand_string): Use the expanding_var file
+	info instead of the reading_file info.
+	* function.c (check_numeric): Ditto.
+	(func_word): Ditto.
+	(func_wordlist): Ditto.
+	(func_error): Ditto.
+	(expand_builtin_function): Ditto.
+	(handle_function): Ditto.
+
+2006-02-14  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (eval): Even if the included filenames expands to the
+	empty string we still need to free the allocated buffer.
+
+	* implicit.c (pattern_search): If we allocated a variable set for
+	an impossible file, free it.
+	* variable.c (free_variable_set): New function.
+	* variable.h: Declare it.
+
+	* read.c (read_all_makefiles): Makefile names are kept in the
+	strcache, so there's never any need to alloc/free them.
+	(eval): Ditto.
+
+	* main.c (main): Add "archives" to the .FEATURES variable if
+	archive support is enabled.
+	* doc/make.texi (Special Variables): Document it.
+
+2006-02-13  Paul D. Smith  <psmith@gnu.org>
+
+	* implicit.c (pattern_search): Add checking for DOS pathnames to
+	the pattern rule target LASTSLASH manipulation.
+	Fixes Savannah bug #11183.
+
+2006-02-11  Paul D. Smith  <psmith@gnu.org>
+
+	* (ALL FILES): Updated copyright and license notices.
+
+2006-02-10  Paul D. Smith  <psmith@gnu.org>
+
+	A new internal capability: the string cache is a read-only cache
+	of strings, with a hash table interface for fast lookup.  Nothing
+	in the cache will ever be freed, so there's no need for reference
+	counting, etc.  This is the beginning of a full solution for
+	Savannah bug #15182, but for now we only store makefile names here.
+
+	* strcache.c: New file.  Implement a read-only string cache.
+	* make.h: Add prototypes for new functions.
+	* main.c (initialize_global_hash_tables): Initialize the string cache.
+	(print_data_base): Print string cache stats.
+	* read.c (eval_makefile): Use the string cache to store makefile
+	names.  Rewrite the string allocation to be sure we free everything.
+
+2006-02-10  Eli Zaretskii  <eliz@gnu.org>
+
+	* dir.c (dir_contents_file_exists_p): Don't opendir if the
+	directory time stamp didn't change, except on FAT filesystems.
+	Suggested by J. David Bryan <jdbryan@acm.org>.
+
+2006-02-09  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (func_or): Implement a short-circuiting OR function.
+	(func_and): Implement a short-circuiting AND function.
+	(function_table_init): Update the table with the new functions.
+	* doc/make.texi (Conditional Functions): Changed the "if" section
+	to one on general conditional functions.  Added documentation for
+	$(and ...) and $(or ...) functions.
+	* NEWS: Note new $(and ...) and $(or ...) functions.
+
+2006-02-08  Boris Kolpackov  <boris@kolpackov.net>
+
+	* job.h (struct child): Add the dontcare bitfield.
+	* job.c (new_job): Cache dontcare flag.
+	* job.c (reap_children): Use cached dontcare flag instead of the
+	one in struct file. Fixes Savannah bug #15641.
+
+2006-02-06  Paul D. Smith  <psmith@gnu.org>
+
+	* vpath.c (selective_vpath_search): If the file we find has a
+	timestamp from -o or -W, use that instead of the real time.
+	* remake.c (f_mtime): If the mtime is a special token from -o or
+	-W, don't overwrite it with the real mtime.
+	Fixes Savannah bug #15341.
+
+	Updates from Markus Mauhart <qwe123@chello.at>:
+
+	* w32/subproc/sub_proc.c (process_begin): Remove no-op tests.
+	(process_signal, process_last_err, process_exit_code): Manage
+	invalid handle values.
+	(process_{outbuf,errbuf,outcnt,errcnt,pipes}): Unused and don't
+	manage invalid handles; remove them.
+	* job.c (start_job_command) [WINDOWS32]: Jump out on error.
+	* config.h.W32.template [WINDOWS32]: Set flags for Windows builds.
+	* README.cvs: Updates for building from CVS.
+
+2006-02-05  Paul D. Smith  <psmith@gnu.org>
+
+	* file.c (enter_file): Keep track of the last double_colon entry,
+	to avoid walking the list every time we want to add a new one.
+	Fixes Savannah bug #15533.
+	* filedef.h (struct file): Add a new LAST pointer.
+
+	* dir.c (directory_contents_hash_cmp): Don't use subtraction to do
+	the comparison.  For 64-bits systems the result of the subtraction
+	might not fit into an int.  Use comparison instead.
+	Fixes Savannah bug #15534.
+
+	* doc/make.texi: Update the chapter on writing commands to reflect
+	the changes made in 3.81 for backslash/newline and SHELL handling.
+
+2006-02-01  Paul D. Smith  <psmith@gnu.org>
+
+	* dir.c (dir_contents_file_exists_p) [WINDOWS32]: Make sure
+	variable st is not used when it's not initialized.
+	Patch from Eli Zaretskii <eliz@gnu.org>.
+
+2006-01-31  Paul D. Smith  <psmith@gnu.org>
+
+	* README.W32.template: Applied patch #4785 from
+	Markus Mauhart <qwe123@chello.at>.
+	* README.cvs: Applied patch #4786 from
+	Markus Mauhart <qwe123@chello.at>.
+	* make_msvc_net2003.vcproj [WINDOWS32]: New version from
+	J. Grant <jg@jguk.org>.
+
+	* main.c: Update the copyright year in the version output.
+	* prepare_w32.bat: Remove this file from the distribution.
+
+2006-01-21  Eli Zaretskii  <eliz@gnu.org>
+
+	* remake.c (update_goal_chain): Set g->changed instead of
+	incrementing it, as it is only 8-bit wide, and could overflow if
+	many commands got started in update_file.
+
+	* w32/include/sub_proc.h: Add a prototype for process_used_slots.
+
+	* w32/subproc/sub_proc.c: Change dimension of proc_array[] to
+	MAXIMUM_WAIT_OBJECTS.
+	(process_wait_for_any_private): Change dimension of handles[]
+	array to MAXIMUM_WAIT_OBJECTS.
+	(process_used_slots): New function.
+	(process_register): Don't register more processes than the
+	available number of slots.
+	(process_easy): Don't start new processes if all slots are used	up.
+
+	* job.c (load_too_high, start_waiting_jobs) [WINDOWS32]: If there
+	are already more children than sub_proc.c can handle, behave as if
+	the load were too high.
+	(start_job_command): Fix a typo in error message when process_easy
+	fails.
+
+2006-01-14  Eli Zaretskii  <eliz@gnu.org>
+
+	* main.c (main) [WINDOWS32]: Don't refuse to run with -jN, even if
+	the shell is not sh.exe.
+
+	* job.c (create_batch_file): Renamed from create_batch_filename;
+	all callers changed.  Don't close the temporary file; return its
+	file descriptor instead.  New arg FD allows to return the file
+	descriptor.
+	(construct_command_argv_internal): Use _fdopen instead of fopen to
+	open the batch file.
+
+2006-01-04  Paul D. Smith  <psmith@gnu.org>
+
+	* readme.vms: Updates for case-insensitive VMS file systems from
+	Hartmut Becker <Hartmut.Becker@hp.com>.
+	* dir.c (vms_hash): Ditto.
+	* vmsify.c (copyto): Ditto.
+	* vmsfunctions.c (readdir): Ditto.
+
+	* make.1: Add a section on the exit codes for make.
+
+	* doc/make.texi: A number of minor updates to the documentation.
+
+2006-01-03  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (update_file_1): Mark a prerequisite changed if it
+	doesn't exist.
+
+	* read.c (eval): Be sure to strip off trailing whitespace from the
+	prerequisites list properly.  Also, initialize all fields in
+	struct dep when creating a new one.
+
+2005-12-28  Paul D. Smith  <psmith@gnu.org>
+
+	* config.h.W32.template [WINDOWS32]: Add in some pragmas to
+	disable warnings for MSC.
+	Patch by Rob Tulloh <rtulloh@yahoo.com>.
+
+2005-12-17  Eli Zaretskii  <eliz@gnu.org>
+
+	* doc/make.texi (Execution): Add a footnote about changes in
+	handling of backslash-newline sequences.  Mention the differences
+	on MS-DOS and MS-Windows.
+
+	* NEWS: More details about building the MinGW port and a pointer
+	to README.W32.  Fix the section name that describes the new
+	backward-incompatible processing of backslash-newline sequences.
+	The special processing of SHELL set to "cmd" is only relevant to
+	MS-Windows, not MS-DOS.
+
+2005-12-17  Eli Zaretskii  <eliz@gnu.org>
+
+	* main.c (handle_runtime_exceptions): Cast exrec->ExceptionAddress
+	to DWORD, to avoid compiler warnings.
+	* job.c (exec_command): Cast hWaitPID and hPID to DWORD, and
+	use %ld in format, to avoid compiler warnings.
+
+	* doc/make.texi (Special Targets): Fix a typo.
+	(Appending): Fix cross-reference to Setting.
+	(Special Variables, Secondary Expansion, File Name Functions)
+	(Flavor Function, Pattern Match, Quick Reference): Ensure two
+	periods after a sentence.
+	(Execution): Add @: after "e.g.".
+	(Environment): Fix punctuation.
+	(Target-specific, Call Function, Quick Reference): Add @: after "etc."
+	(Shell Function, Target-specific): Add @: after "vs."
+
+2005-12-14  Boris Kolpackov  <boris@kolpackov.net>
+
+	* read.c (record_target_var): Initialize variable's export field
+	with v_default instead of leaving it "initialized" by whatever
+	garbage happened to be on the heap.
+
+2005-12-12  Paul D. Smith  <psmith@gnu.org>
+
+	* make.1: Fix some display errors and document all existing options.
+	Patch by Mike Frysinger <vapier@gentoo.org>.
+
+2005-12-11  Paul D. Smith  <psmith@gnu.org>
+
+	* implicit.c (pattern_search): If 2nd expansion is not set for
+	this implicit rule, replace the pattern with the stem directly,
+	and don't re-expand the variable list.  Along with the other
+	.SECONDEXPANSION changes below, fixes bug #13781.
+
+2005-12-09  Boris Kolpackov  <boris@kolpackov.net>
+
+	* implicit.c (pattern_search): Mark other files that this rule
+	builds as targets so that they are not treated as intermediates
+	by the pattern rule search algorithm. Fixes bug #13022.
+
+2005-12-07  Boris Kolpackov  <boris@kolpackov.net>
+
+	* remake.c (notice_finished_file): Propagate the change of
+	modification time to all the double-colon entries only if
+	it is the last one to be updated. Fixes bug #14334.
+
+2005-11-17  Boris Kolpackov  <boris@kolpackov.net>
+
+	* function.c (func_flavor): Implement the flavor function which
+	returns the flavor of a variable.
+	* doc/make.texi (Functions for Transforming Text): Document it.
+	* NEWS: Add it to the list of new functions.
+
+2005-11-14  Boris Kolpackov  <boris@kolpackov.net>
+
+	* read.c (construct_include_path): Set the .INCLUDE_DIRS special
+	variable.
+	* doc/make.texi (Special Variables): Document .INCLUDE_DIRS.
+	* NEWS: Add .INCLUDE_DIRS to the list of new special variables.
+
+2005-10-26  Paul Smith  <psmith@gnu.org>
+
+	* read.c (record_files): Don't set deps flags if there are no deps.
+	* maintMakefile: We only need to build the templates when we are
+	creating a distribution, so don't do it for "all".
+
+2005-10-24  Paul D. Smith  <psmith@gnu.org>
+
+	Make secondary expansion optional: its enabled by declaring the
+	special target .SECONDEXPANSION.
+
+	* NEWS: Update information on second expansion capabilities.
+	* doc/make.texi (Secondary Expansion): Document the
+	.SECONDEXPANSION special target and its behavior.
+	* dep.h (struct dep): Add a flag STATICPATTERN, set to true if the
+	prerequisite list was found in a static pattern rule.
+	(free_dep_chain): Declare a prototype.
+	* file.c (parse_prereqs): New function: break out some complexity
+	from expand_deps().
+	(expand_deps): If we aren't doing second expansion, replace % with
+	the stem for static pattern rules.  Call the new function.
+	* filedef.h (parse_prereqs): Declare a prototype.
+	* implicit.c (pattern_search): Initialize the new staticpattern
+	field.
+	* main.c (second_expansion): Declare a global variable to remember
+	if the special target has been seen.  Initialize the new
+	staticpattern field for prerequisites.
+	* make.h: Extern for second_expansion.
+	* misc.c (free_dep_chain): New function: frees a struct dep list.
+	* read.c (read_all_makefiles): Initialize the staticpattern field.
+	(eval_makefile): Ditto.
+	(record_files): Check for the .SECONDEXPANSION target and set
+	second_expansion global if it's found.
+	Use the new free_dep_chain() instead of doing it by hand.
+	Set the staticpattern field for prereqs of static pattern targets.
+
+2005-10-16  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main): Set CURDIR to be a file variable instead of a
+	default, so that values of CURDIR inherited from the environment
+	won't override the make value.
+
+2005-09-26  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (construct_command_argv_internal): If the line is empty
+	remember to free the temporary argv strings.
+	Fixes bug # 14527.
+
+2005-09-16  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (start_job_command): The noerror flag is a boolean (single
+	bit); set it appropriately.
+	Reported by Mark Eichin <eichin@metacarta.com>
+
+2005-08-29  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (func_error): On Windows, output from $(info ...)
+	seems to come in the wrong order.  Try to force it with fflush().
+
+2005-08-10  Boris Kolpackov  <boris@kolpackov.net>
+
+	* read.c (record_files): Move code that sets stem for static
+	pattern rules out of the if (!two_colon) condition so it is
+	also executed for two-colon rules. Fixes Savannah bug #13881.
+
+2005-08-08  Paul D. Smith  <psmith@gnu.org>
+
+	* make.h: Don't test that __STDC__ is non-0.  Some compilers
+	(Windows for example) set it to 0 to denote "ISO C + extensions".
+	Fixes bug # 13594.
+
+2005-08-07  Paul D. Smith  <psmith@gnu.org>
+
+	* w32/pathstuff.c (getcwd_fs): Fix warning about assignment in a
+	conditional (slightly different version of a fix from Eli).
+
+	Fix a bug reported by Michael Matz <matz@suse.de>: patch included.
+	If make is running in parallel without -k and two jobs die in a
+	row, but not too close to each other, then make will quit without
+	waiting for the rest of the jobs to die.
+
+	* main.c (die): Don't reset err before calling reap_children() the
+	second time: we still want it to be in the error condition.
+	* job.c (reap_children): Use a static variable, rather than err,
+	to control whether or not the error message should be printed.
+
+2005-08-06  Eli Zaretskii  <eliz@gnu.org>
+
+	* w32/subproc/sub_proc.c: Include signal.h.
+	(process_pipe_io, process_file_io): Pass a pointer to a local
+	DWORD variable to GetExitCodeProcess.  If the exit code is
+	CONTROL_C_EXIT, put SIGINT into pproc->signal.
+
+	* job.c [WINDOWS32]: Include windows.h.
+	(main_thread) [WINDOWS32]: New global variable.
+	(reap_children) [WINDOWS32]: Get the handle for the main thread
+	and store it in main_thread.
+
+	* commands.c [WINDOWS32]: Include windows.h and w32err.h.
+	(fatal_error_signal) [WINDOWS32]: Suspend the main thread before
+	doing anything else.  When we are done, close the main thread
+	handle and exit with status 130.
+
+2005-07-30  Eli Zaretskii  <eliz@gnu.org>
+
+	* w32/subproc/sub_proc.c (process_begin): Don't pass a NULL
+	pointer to fprintf.
+
+	* main.c (find_and_set_default_shell): If found a DOSish shell,
+	set sh_found and the value of default_shell, and report the
+	findings in debug mode.
+
+	* job.c (construct_command_argv_internal): Check unixy_shell, not
+	no_default_sh_exe, to decide whether to use Unixy or DOSish
+	builtin commands.
+
+	* README.W32: Update with info about the MinGW build.
+
+	* build_w32.bat: Support MinGW.
+
+	* w32/subproc/build.bat: Likewise.
+
+	* w32/subproc/sub_proc.c (process_easy): Fix format strings for
+	printing DWORD args.
+
+	* function.c (windows32_openpipe): Fix format strings for printing
+	DWORD args.
+
+	* job.c (reap_children) [WINDOWS32]: Don't declare 'status' and
+	'reap_mode'.
+	(start_job_command): Fix format string for printing the result of
+	process_easy.
+	(start_job_command) [WINDOWS32]: Do not define.
+	(exec_command): Fix format string for printing HANDLE args.
+
+	* main.c (handle_runtime_exceptions): Fix sprintf format strings
+	to avoid compiler warnings.
+	(open_tmpfile): Declare fd only if HAVE_FDOPEN is defined.
+	(Note: some of these fixes were submitted independently by J. Grant)
+
+2005-07-30  J. Grant <jg@jguk.org>
+
+	* prepare_w32.bat: Copy config.h.w32 to config.h if not exist.
+	* make_msvc_net2003.vcproj, make_msvc_net2003.sln: MSVC Project files.
+	* Makefile.am (EXTRA_DIST): Add MSVC Project files.
+
+2005-07-15  Paul Smith  <psmith@gnu.org>
+
+	* job.c (construct_command_argv_internal) [DOS,WINDOWS32,OS/2]: If
+	we don't have a POSIX shell, then revert to the old
+	backslash-newline behavior (where they are stripped).
+	Fixes bug #13665.
+
+2005-07-08  Paul D. Smith  <psmith@gnu.org>
+
+	* config.h.W32.template: Reorder to match the standard config.h,
+	for easier comparisons.
+	From J. Grant <jg@jguk.org>
+
+	* maintMakefile: Remove .dep_segment before overwriting it, in
+	case it's not writable or noclobber is set.
+	* expand.c (variable_expand_string): Cast result of pointer
+	arithmetic to avoid a warning.
+	* main.c (switches): Add full-fledged final initializer.
+
+2005-07-06  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: IRIX has _sys_siglist.  Tru64 UNIX has __sys_siglist.
+	* signame.c (strsignal): If we found _sys_siglist[] or
+	__sys_siglist[] use those instead of sys_siglist[].
+	From Albert Chin <china@thewrittenword.com>
+
+2005-07-04  Paul D. Smith  <psmith@gnu.org>
+
+	* config.h-vms.template [VMS]: Latest VMS has its own glob() and
+	globfree(); set up to use the GNU versions.
+	From Martin Zinser <zinser@zinser.no-ip.info>
+
+2005-07-03  Paul D. Smith  <psmith@gnu.org>
+
+	From J. Grant <jg@jguk.org>:
+
+	* README.W32.template: Update the Windows and tested MSVC versions.
+	* NMakefile.template (CFLAGS_any): Change warning level from W3 to W4.
+	* w32/subproc/NMakefile (CFLAGS_any): Ditto.
+	* build_w32.bat: Ditto.
+	* w32/subproc/build.bat: Ditto.
+
+2005-06-28  Paul D. Smith  <psmith@gnu.org>
+
+	* signame.c: HAVE_DECL_* macros are set to 0, not undef, if the
+	declaration was checked but not present.
+
+2005-06-27  Paul D. Smith  <psmith@gnu.org>
+
+	* dir.c (find_directory): Change type of fs_serno/fs_flags/fs_len
+	to unsigned long.  Fixes Savannah bug #13550.
+
+	* w32/subproc/sub_proc.c: Remove (HANDLE) casts on lvalues.
+	(process_pipe_io): Initialize tStdin/tStdout/tStderr variables.
+	Fixes Savannah bug #13551.
+
+2005-06-26  Paul D. Smith  <psmith@gnu.org>
+
+	* make.h: Fix bug in ANSI_STRING/strerror() handling; only define
+	it if ANSI_STRING is not set.
+
+2005-06-25  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (eval): If no filenames are passed to any of the
+	"include" variants, don't print an error.
+	* doc/make.texi (Include): Document this.
+	Fixes Savannah bug #1761.
+
+	* job.c (construct_command_argv_internal): Sanitize handling of
+	backslash/newline pairs according to POSIX: that is, keep the
+	backslash-newline in the command script, but remove a following
+	TAB character, if present.  In the fast path, make sure that the
+	behavior matches what the shell would do both inside and outside
+	of quotes.  In the slow path, quote the backslash and put a
+	literal newline in the string.
+	Fixes Savannah bug #1332.
+	* doc/make.texi (Execution): Document the new behavior and give
+	some examples.
+	* NEWS: Make a note of the new behavior.
+
+	* make.h [WINDOWS32]: #include <direct.h>.
+	Fixes Savannah bug #13478.
+
+	* remake.c (name_mtime): If the stat() of a file fails and the -L
+	option was given and the file is a symlink, take the best mtime of
+	the symlink we can get as the mtime of the file and don't fail.
+	Fixes Savannah bug #13280.
+
+	* read.c (find_char_unquote): Accept a new argument IGNOREVARS.
+	If it's set, then don't	stop on STOPCHARs or BLANKs if they're
+	inside a variable reference.  Make this function static as it's
+	only used here.
+	(eval): Call find_char_unquote() with IGNOREVARS set when we're
+	parsing an unexpanded line looking for semicolons.
+	Fixes Savannah bug #1454.
+	* misc.c (remove_comments): Move this to read.c and make it static
+	as it's only used there.  Call find_char_unquote() with new arg.
+	* make.h: Remove prototypes for find_char_unquote() and
+	remove_comments() since they're static now.
+
+	* main.c (main): If we see MAKE_RESTARTS in the environment, unset
+	its export flag and obtain its value.  When we need to re-exec,
+	increment the value and add it into the environment.
+	* doc/make.texi (Special Variables): Document MAKE_RESTARTS.
+	* NEWS: Mention MAKE_RESTARTS.
+	* main.c (always_make_set): New variable.  Change the -B option to
+	set this one instead.
+	(main): When checking makefiles, only set always_make_flag if
+	always_make_set is set AND the restarts flag is 0.  When building
+	normal targets, set it IFF always_make_set is set.
+	(main): Avoid infinite recursion with -W, too: only set what-if
+	files to NEW before we check makefiles if we've never restarted
+	before.  If we have restarted, set what-if files to NEW _after_ we
+	check makefiles.
+	Fixes Savannah bug #7566:
+
+2005-06-17  Paul D. Smith  <psmith@gnu.org>
+
+	* default.c: Change VMS implicit rules to use $$$$ instead of $$
+	in the prerequisites list.
+
+2005-06-12  Paul D. Smith  <psmith@gnu.org>
+
+	Fix Savannah bug # 1328.
+
+	* configure.in: Check for atexit().
+	* misc.c (close_stdout): Test stdout to see if writes to it have
+	failed.  If so, be sure to exit with a non-0 error code.  Based on
+	code found in gnulib.
+	* make.h: Prototype.
+	* main.c (main): Install close_stdout() with atexit().
+
+2005-06-10  Paul D. Smith  <psmith@gnu.org>
+
+	VMS build updates from Hartmut Becker <Hartmut.Becker@hp.com>:
+
+	* vmsjobs.c [VMS]: Updates to compile on VMS: add some missing
+	headers; make vmsWaitForChildren() static; extern vmsify().
+	* job.c [VMS]: Move vmsWaitForChildren() prototype to be global.
+	Don't create child_execute_job() here (it's in vmsjobs.c).
+	* makefile.vms (job.obj) [VMS]: Add vmsjobs.c as a prerequisite.
+
+2005-06-09  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (push_new_variable_scope): File variables point
+	directly to the global_setlist variable.  So, inserting a new
+	scope in front of that has no effect on those variables: they
+	don't go through current_variable_set_list.  If we're pushing a
+	scope and the current scope is global, push it "the other way" so
+	that the new setlist is in the global_setlist variable, and
+	next points to a new setlist with the global variable set.
+	(pop_variable_scope): Properly undo a push with the new
+	semantics.
+	Fixes Savannah bug #11913.
+
+2005-05-31  Boris Kolpackov  <boris@kolpackov.net>
+
+	* job.c (reap_children): Don't die of the command failed but
+	the dontcare flag is set. Fixes Savannah bug #13216.
+
+	* implicit.c (pattern_search): When creating a target from
+	an implicit rule match, lookup pattern target and set precious
+	flag in a newly created target. Fixes Savannah bug #13218.
+
+2005-05-13  Paul D. Smith  <psmith@gnu.org>
+
+	Implement "if... else if... endif" syntax.
+
+	* read.c (eval): Push all checks for conditional words ("ifeq",
+	"else", etc.) down into the conditional_line() function.
+	(conditional_line): Rework to allow "else if..." clause.  New
+	return value -2 for lines which are not conditionals.  The
+	ignoring flag can now also be 2, which means "already parsed a
+	true branch".  If that value is seen no other branch of this
+	conditional can be considered true.  In the else parsing if there
+	is extra text after the else, invoke conditional_line()
+	recursively to see if it's another conditional.  If not, it's an
+	error.  If so, raise the conditional value to this level instead
+	of creating a new conditional nesting level.  Special check for
+	"else" and "endif", which aren't allowed on the "else" line.
+	* doc/make.texi (Conditional Syntax): Document the new syntax.
+
+2005-05-09  Paul D. Smith  <psmith@gnu.org>
+
+	* Makefile.am (EXTRA_make_SOURCES): Add vmsjobs.c
+	(MAYBE_W32): Rework how SUBDIRS are handled so that "make dist"
+	recurses to the w32 directory, even on non-Windows systems.  Use
+	the method suggested in the automake manual.
+	* configure.in: Add w32/Makefile to AC_CONFIG_FILES.
+	* maintMakefile (gnulib-url): They moved the texinfo.tex files.
+
+2005-05-07  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (die): If we're dying with a fatal error (not that a
+	command has failed), write back any leftover tokens before we go.
+
+	* job.c (set_child_handler_action_flags): If there are jobs
+	waiting for the load to go down, set an alarm to go off in 1
+	second.  This allows us to wake up from a potentially long-lasting
+	read() and start a new job if the load has gone down.  Turn it off
+	after the read.
+	(job_noop): Dummy signal handler function.
+	(new_job): Invoke it with the new semantics.
+
+	* docs/make.texi: Document secondary expansion.  Various cleanups
+	and random work.
+
+2005-05-03  Paul D. Smith  <psmith@gnu.org>
+
+	Rename .DEFAULT_TARGET to .DEFAULT_GOAL: in GNU make terminology
+	the targets which are to ultimately be made are called "goals";
+	see the GNU make manual.  Also, MAKECMDGOALS, etc.
+
+	* filedef.h, read.c, main.c: Change .DEFAULT_TARGET to
+	.DEFAULT_GOAL, and default_target_name to default_goal_name.
+	* doc/make.texi (Special Variables): Document .DEFAULT_GOAL.
+
+2005-05-02  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c, vmsjobs.c (vmsWaitForChildren, vms_redirect,
+	vms_handle_apos, vmsHandleChildTerm, reEnableAst, astHandler,
+	tryToSetupYAst, child_execute_job) [VMS]: Move VMS-specific
+	functions to vmsjobs.c.  #include it into jobs.c.
+
+	Grant Taylor <gtaylor@picante.com> reports that -j# can lose
+	jobserver tokens.  I found that this happens when an exported
+	recursive variable contains a $(shell ...) function reference: in
+	this situation we could "forget" to write back a token.
+
+	* job.c, job.h: Add variable jobserver_tokens: counts the tokens
+	we have.  It's not reliable to depend on the number of children in
+	our linked list so keep a separate count.
+	(new_job): Check jobserver_tokens rather than children &&
+	waiting_jobs.  Increment jobserver_tokens when we get one.
+	(free_child): If jobserver_tokens is 0, internal error.  If it's
+	>1, write a token back to the jobserver pipe (we don't write a
+	token for the "free" job).  Decrement jobserver_tokens.
+
+	* main.c: Add variable master_job_slots.
+	(main): Set it to hold the number of jobs requested if we're the
+	master process, when using the jobserver.
+	(die): Sanity checks: first test jobserver_tokens to make sure
+	this process isn't holding any tokens we didn't write back.
+	Second, if master_job_slots is set count the tokens left in the
+	jobserver pipe and ensure it's the same as master_job_slots (- 1).
+
+2005-04-24  Paul D. Smith  <psmith@gnu.org>
+
+	Grant Taylor <gtaylor@picante.com> reports that -j# in conjunction
+	with -l# can lose jobserver tokens, because waiting jobs are not
+	consulted properly when checking for the "free" token.
+
+	* job.c (free_child): Count waiting_jobs as having tokens.
+	* job.c (new_job): Ditto.  Plus, call start_waiting_jobs() here to
+	handle jobs waiting for the load to drop.
+
+2005-04-23  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main): Be careful to not core if a variable setting in
+	the environment doesn't contain an '='.  This is illegal but can
+	happen in broken setups.
+	Reported by Joerg Schilling <schilling@fokus.fraunhofer.de>.
+
+2005-04-12  Paul D. Smith  <psmith@gnu.org>
+
+	The second expansion feature causes significant slowdown.  Timing
+	a complex makefile (GCC 4.1) shows a slowdown from .25s to just
+	read the makefile before the feature, to 11+s to do the same
+	operations after the feature.  Additionally, memory usage
+	increased drastically.  To fix this I added some intelligence that
+	avoids the overhead of the second expansion unless it's required.
+
+	* dep.h: Add a new boolean field, need_2nd_expansion.
+
+	* read.c (eval): When creating the struct dep for the target,
+	check if the name contains a "$"; if so set need_2nd_expansion to 1.
+	(record_files): If there's a "%" in a static pattern rule, it gets
+	converted to "$*" so set need_2nd_expansion to 1.
+
+	* file.c (expand_deps): Rework to be more efficient.  Only perform
+	initialize_file_variables(), set_file_variables(), and
+	variable_expand_for_file() if the need_2nd_expansion is set.
+
+	* implicit.c (pattern_search): Default need_2nd_expansion to 0.
+	(pattern_search): Ditto.
+	* main.c (handle_non_switch_argument): Ditto.
+	(main): Ditto.
+	* read.c (read_all_makefiles): Ditto.
+	(eval_makefile): Ditto.
+
+2005-04-07  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main) [WINDOWS32]: Export PATH to sub-shells, not Path.
+	* variable.c (sync_Path_environment): Ditto.
+	Patch by Alessandro Vesely.  Fixes Savannah bug #12209.
+
+	* main.c (main): Define the .FEATURES variable.
+	* NEWS: Announce .FEATURES.
+	* doc/make.texi (Special Variables): Document .FEATURES.
+
+	* remake.c (check_dep): If a file is .PHONY, update it even if
+	it's marked intermediate.  Fixes Savannah bug #12331.
+
+2005-03-15  Boris Kolpackov  <boris@kolpackov.net>
+
+	* file.c (expand_deps): Factor out the second expansion and
+	prerequisite line parsing logic from snap_deps().
+
+	* file.c (snap_deps): Use expand_deps(). Expand and parse
+	prerequisites of the .SUFFIXES special target first. Fixes
+	Savannah bug #12320.
+
+2005-03-13  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main) [MSDOS]: Export SHELL in MSDOS.  Requested by Eli
+	Zaretskii.
+
+2005-03-11  Paul D. Smith  <psmith@gnu.org>
+
+	* signame.c (strsignal): HAVE_DECL_SYS_SIGLIST is 0 when not
+	available, not undefined (from Earnie Boyd).
+
+2005-03-10  Boris Kolpackov  <boris@kolpackov.net>
+
+	* implicit.c (pattern_search): Mark an intermediate target as
+	precious if it happened to be a prerequisite of some (other)
+	target. Fixes Savannah bug #12267.
+
+2005-03-09  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (eval_makefile): Add alloca(0).
+	(eval_buffer): Ditto.
+
+2005-03-09  Boris Kolpackov  <boris@kolpackov.net>
+
+	* main.c (main): Use o_file instead of o_default when defining
+	the .DEFAULT_TARGET special variable.
+	* read.c (eval): Use define_variable_global() instead of
+	define_variable() when setting new value for the .DEFAULT_TARGET
+	special variable.  Fixes Savannah bug #12266.
+
+2005-03-04  Boris Kolpackov  <boris@kolpackov.net>
+
+	* imlicit.c (pattern_search): Mark files for which an implicit
+	rule has been found as targets. Fixes Savannah bug #12202.
+
+2005-03-04  Paul D. Smith  <psmith@gnu.org>
+
+	* AUTHORS: Update.
+	* doc/make.texi (Automatic Variables): Document $|.
+
+2005-03-03  Boris Kolpackov  <boris@kolpackov.net>
+
+	* read.c (record_files): Instead of substituting % with
+	actual stem value in dependency list replace it with $*.
+	This fixes stem triple expansion bug.
+
+	* implicit.c (pattern_search): Copy stem to a separate
+	buffer and make it a properly terminated string. Assign
+	this buffer instead of STEM (which is not terminated) to
+	f->stem. Instead of substituting % with actual stem value
+	in dependency list replace it with $*. This fixes stem
+	triple expansion bug.
+
+2005-03-01  Paul D. Smith  <psmith@gnu.org>
+
+	* commands.c (fatal_error_signal) [WINDOWS32]: Don't call kill()
+	on Windows, as it takes a handle not a pid.  Just exit.
+	Fix from patch #3679, provided by Alessandro Vesely.
+
+	* configure.in: Update check for sys_siglist[] from autoconf manual.
+	* signame.c (strsignal): Update to use the new autoconf macro.
+
+2005-03-01  Boris Kolpackov  <boris@kolpackov.net>
+
+	* read.c (record_files): Add a check for the list of prerequisites
+	of a static pattern rule being empty. Fixes Savannah bug #12180.
+
+2005-02-28  Paul D. Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Text Functions): Update docs to allow the end
+	ordinal for $(wordlist ...) to be 0.
+	* function.c (func_wordlist): Fail if the start ordinal for
+	$(wordlist ...) is <1.  Matches documentation.
+	Resolves Savannah support request #103195.
+
+	* remake.c (update_goal_chain): Fix logic for stopping in -q:
+	previously we were stopping when !-q, exactly the opposite.  This
+	has been wrong since version 1.34, in 1994!
+	(update_file): If we got an error don't break out to run more
+	double-colon rules: just return immediately.
+	Fixes Savannah bug #7144.
+
+2005-02-27  Paul D. Smith  <psmith@gnu.org>
+
+	* misc.c (end_of_token): Make argument const.
+	* make.h: Update prototype.
+
+	* function.c (abspath, func_realpath, func_abspath): Use
+	PATH_VAR() and GET_PATH_MAX instead of PATH_MAX.
+	* dir.c (downcase): Use PATH_VAR() instead of PATH_MAX.
+	* read.c (record_files): Ditto.
+	* variable.c (do_variable_definition): Ditto.
+
+	* function.c (func_error): Create a new function $(info ...) that
+	simply prints the message to stdout with no extras.
+	(function_table_init): Add new function to the table.
+	* NEWS: Add $(info ...) reference.
+	* doc/make.texi (Make Control Functions): Document it.
+
+	New feature: if the system supports symbolic links, and the user
+	provides the -L/--check-symlink-time flag, then use the latest
+	mtime between the symlink(s) and the target file.
+
+	* configure.in (MAKE_SYMLINKS): Check for lstat() and
+	readlink().  If both are available, define MAKE_SYMLINKS.
+	* main.c: New variable: check_symlink_flag.
+	(usage): Add a line for -L/--check-symlink-times to the help string.
+	(switches): Add -L/--check-symlink-times command line argument.
+	(main): If MAKE_SYMLINKS is not defined but the user specified -L,
+	print a warning and disable it again.
+	* make.h: Declare check_symlink_flag.
+	* remake.c (name_mtime): If MAKE_SYMLINKS and check_symlink_flag,
+	if the file is a symlink then check each link in the chain and
+	choose the NEWEST mtime we find as the mtime for the file.  The
+	newest mtime might be the file itself!
+	* NEWS: Add information about this new feature.
+	* doc/make.texi (Options Summary): Add -L/--check-symlink-times docs.
+
+	Avoid core dumps described in Savannah bug # 12124:
+
+	* file.c: New variable snapped_deps remember whether we've run
+	snap_deps().
+	(snap_deps): Set it.
+	* filedef.h: Extern it.
+	* read.c (record_files): Check snapped_deps; if it's set then
+	we're trying to eval a new target/prerequisite relationship from
+	within a command script, which we don't support.  Fatal.
+
+2005-02-28  Boris Kolpackov  <boris@kolpackov.net>
+
+	Implementation of the .DEFAULT_TARGET special variable.
+
+	* read.c (eval): If necessary, update default_target_name when
+	reading rules.
+	* read.c (record_files): Update default_target_file if
+	default_target_name has changed.
+	* main.c (default_target_name): Define.
+	* main.c (main): Enter .DEFAULT_TARGET as make variable. If
+	default_target_name is set use default_target_file as a root
+	target to make.
+	* filedef.h (default_target_name): Declare.
+	* dep.h (free_dep_chain):
+	* misc.c (free_dep_chain): Change to operate on struct nameseq
+	and change name to free_ns_chain.
+	* file.c (snap_deps): Update to use free_ns_chain.
+
+2005-02-27  Boris Kolpackov  <boris@kolpackov.net>
+
+	Implementation of the second expansion in explicit rules,
+	static pattern rules and implicit rules.
+
+	* read.c (eval): Refrain from chopping up rule's dependencies.
+	Store them in a struct dep as a single dependency line. Remove
+	the code that implements SySV-style automatic variables.
+
+	* read.c (record_files): Adjust the code that handles static
+	pattern rules to expand all percents instead of only the first
+	one. Reverse the order in which dependencies are stored so that
+	when the second expansion reverses them again they appear in
+	the makefile order (with some exceptions, see comments in
+	the code). Remove the code that implements SySV-style automatic
+	variables.
+
+	* file.c (snap_deps): Implement the second expansion and chopping
+	of dependency lines for explicit rules.
+
+	* implicit.c (struct idep): Define an auxiliary data type to hold
+	implicit rule's dependencies after stem substitution and
+	expansion.
+
+	* implicit.c (free_idep_chain): Implement.
+
+	* implicit.c (get_next_word): Implement helper function for
+	parsing implicit rule's dependency lines into words taking
+	into account variable expansion requests. Used in the stem
+	splitting code.
+
+	* implicit.c (pattern_search): Implement the second expansion
+	for implicit rules. Also fixes bug #12091.
+
+	* commands.h (set_file_variables): Declare.
+	* commands.c (set_file_variables): Remove static specifier.
+
+	* dep.h (free_dep_chain): Declare.
+	* misc.c (free_dep_chain): Implement.
+
+	* variable.h (variable_expand_for_file): Declare.
+	* expand.c (variable_expand_for_file): Remove static specifier.
+
+	* make.h (strip_whitespace): Declare.
+	* function.c (strip_whitespace): Remove static specifier.
+
+2005-02-26  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main): Check for ferror() when reading makefiles from stdin.
+	Apparently some shells in Windows don't close pipes properly and
+	require this check.
+
+2005-02-24  Jonathan Grant  <jg@jguk.org>
+
+	* configure.in: Add MinGW configuration options, and extra w32 code
+	directory.
+	* Makefile.am: Add MinGW configuration options, and extra w32 code
+	directory.
+	* main.c: Determine correct program string (after last \ without .exe).
+	* subproc/sub_proc.c: `GetExitCodeProcess' from incompatible pointer
+	type fix x2
+	* w32/Makefile.am: Import to build win32 lib of sub_proc etc.
+	* subproc/w32err.c: MSVC thread directive not applied to MinGW builds.
+	* tests/run_make_tests.pl, tests/test_driver.pl: MSYS testing
+	environment support.
+
+2004-04-16  Dmitry V. Levin  <ldv@altlinux.org>
+
+	* function.c (func_shell): When initializing error_prefix, check
+	that reading file name is not null.  This fixes long-standing
+	segfault in cases like "make 'a1=$(shell :)' 'a2:=$(a1)'".
+
+2005-02-09  Paul D. Smith  <psmith@gnu.org>
+
+	* maintMakefile: Update the CVS download URL to simplify them.
+	Also, the ftp://ftp.gnu.org/GNUinfo site was removed so I'm
+	downloading the .texi files from Savannah now.
+
+	Fixed these issues reported by Markus Mauhart <qwe123@chello.at>:
+
+	* main.c (handle_non_switch_argument): Only add variables to
+	command_variables if they're not already there: duplicate settings
+	waste space and can be confusing to read.
+
+	* w32/include/sub_proc.h: Remove WINDOWS32.  It's not needed since
+	this header is never included by non-WINDOWS32 code, and it
+	requires <config.h> to define which isn't always included first.
+
+	* dir.c (read_dirstream) [MINGW]: Use proper macro names when
+	testing MINGW32 versions.
+
+	* main.c (log_working_directory): flush stdout to be sure the WD
+	change is printed before any stderr messages show up.
+
+2005-02-01  Paul D. Smith  <psmith@gnu.org>
+
+	* maintMakefile (po_repo): Update the GNU translation site URL.
+
+2004-12-01  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main): Change char* env_shell to struct variable shell_var.
+	* variable.c (target_environment): Use new shell_var.
+
+2004-11-30  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: The old way we avoided creating build.sh from
+	build.sh.in before build.sh.in exists doesn't work anymore; we
+	have to use raw M4 (thanks to Andreas Schwab <schwab@suse.de> for
+	the help!).  This also keeps automake from complaining.
+	* Makefile.am (README): Add a dummy target so automake won't
+	complain that this file doesn't exist when we checkout from CVS.
+	* maintMakefile (.dep_segment): Rewrite this rule since newer
+	versions of automake don't provide DEP_FILES.
+
+2004-11-30  Boris Kolpackov  <boris@kolpackov.net>
+
+	Implementation of `realpath' and `abspath' built-in functions.
+
+	* configure.in: Check for realpath.
+	* function.c (abspath): Return an absolute file name that does
+	not contain any `.' or `..' components, nor repeated `/'.
+	* function.c (func_abspath): For each name call abspath.
+	* function.c (func_realpath): For each name call realpath
+	from libc or delegate to abspath if realpath is not available.
+	* doc/make.texi (Functions for File Names): Document new functions.
+	* doc/make.texi (Quick Reference): Ditto.
+
+2004-11-28  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main) [WINDOWS32]: Remove any trailing slashes from -C
+	arguments.  Fixes bug #10252.
+
+	Fix for bug #1276: Handle SHELL according to POSIX requirements.
+
+	* main.c (main): Set SHELL to v_noexport by default.  Remember the
+	original environment setting of SHELL in the env_shell variable.
+	* main.h: Export new env_shell variable.
+	* variable.c (target_environment): If we find a v_noexport
+	variable for SHELL, add a SHELL variable with the env_shell value.
+	* doc/make.texi (Quick Reference): Document the POSIX behavior.
+	* doc/make.texi (Variables/Recursion): Ditto.
+
+2004-11-28  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (find_and_set_default_shell) [WINDOWS32]: check for
+	equality of "cmd"/"cmd.exe", not inequality.  Fixes bug #11155.
+	Patch by Alessandro Vesely.
+
+2004-11-12  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (child_execute_job) [VMS]: Don't treat "#" as a comment on
+	the command line if it's inside a string.
+	Patch by: Hartmut Becker <Hartmut.Becker@hp.com>
+
+2004-10-21  Boris Kolpackov  <boris@kolpackov.net>
+
+	* function.c (func_lastword): New function: return last word
+	from the list of words.
+	* doc/make.texi: Document $(lastword ). Fix broken links in
+	Quick Reference section.
+
+2004-10-06  Paul D. Smith  <psmith@gnu.org>
+
+	Apply patch from Alessandro Vesely, provided with bug # 9748.
+	Fix use of tmpnam() to work with Borland C.
+
+	* job.c (construct_command_argv_internal) [WINDOWS32]: Remove
+	construction of a temporary filename, and call new function
+	create_batch_filename().
+	(create_batch_filename) [WINDOWS32]: New function to create a
+	temporary filename.
+
+2004-10-05  Boris Kolpackov  <boris@kolpackov.net>
+
+	* read.c (record_target_var): Expand simple pattern-specific
+	variable.
+	* variable.c (initialize_file_variables): Do not expand simple
+	pattern-specific variable.
+
+2004-09-28  Boris Kolpackov  <boris@kolpackov.net>
+
+	* remake.c (update_file_1): When rebuilding makefiles inherit
+	dontcare flag from a target that triggered update.
+
+2004-09-27  Boris Kolpackov  <boris@kolpackov.net>
+
+	* variable.c (initialize_file_variables): Mark pattern-specific
+	variable as a per-target and copy export status.
+
+2004-09-21  Boris Kolpackov  <boris@kolpackov.net>
+
+	* file.c (snap_deps): Mark .PHONY prerequisites as targets.
+
+	* implicit.c (pattern_search): When considering an implicit rule's
+	prerequisite check that it is actually a target rather then
+	just an entry in the file hashtable.
+
+2004-09-21  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (readstring): Fix some logic errors in backslash handling.
+	(eval): Remove some unnecessary processing in buffer handling.
+	(record_target_var): Assert that parse_variable_definition() succeeded.
+	Reported by: Markus Mauhart <qwe123@chello.at>.
+
+	* misc.c: Removed the sindex() function.  All instances of this
+	function were trivially replaceable by the standard strstr()
+	function, and that function will always have better (or certainly
+	no worse) performance than the very simple-minded algorithm
+	sindex() used.  This can matter with complex makefiles.
+	* make.h: Remove the prototype for sindex().
+	* function.c (subst_expand): Convert sindex() call to strstr().
+	This means we no longer need to track the TLEN value so remove that.
+	(func_findstring): Convert sindex() to strstr().
+	* commands.c (chop_commands): Convert sindex() calls to strstr().
+	Suggested by: Markus Mauhart <qwe123@chello.at>.
+
+	* main.c (find_and_set_default_shell) [WINDOWS32]: Implement the
+	idea behind Savannah Patch #3144 from david.baird@homemail.com.
+	If SHELL is set to CMD.EXE then assume it's batch-mode and
+	non-unixy.  I wrote the code differently from the patch, though,
+	to make it safer.  This also resolves bug #9174.
+
+2004-09-20  Paul D. Smith  <psmith@gnu.org>
+
+	* expand.c (variable_expand_string): Modify to invoke
+	patsubst_expand() instead of subst_expand(); the latter didn't
+	handle suffix patterns correctly.
+	* function.c (subst_expand): Remove the SUFFIX_ONLY parameter; it
+	was used only from variable_expand_string() and is no longer used
+	there.
+	(func_subst): Ditto, on call to subst_expand().
+	(patsubst_expand): Require the percent pointers to point to the
+	character after the %, not to the % itself.
+	* read.c (record_files): New call criteria for patsubst_expand().
+	* variable.h: Remove SUFFIX_ONLY from subst_expand() prototype.
+	This is to fix a bug reported by Markus Mauhart <qwe123@chello.at>.
+
+2004-09-19  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (subst_expand): Fix a check in by_word: look for a
+	previous blank if we're beyond the beginning of the string, not
+	the beginning of the word.
+	Bugs reported by Markus Mauhart <qwe123@chello.at>.
+
+2004-05-16  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (update_goal_chain): Change the argument specifying
+	whether we're rebuilding makefiles to be a global variable,
+	REBUILDING_MAKEFILES.
+	(complain): Extract the code that complains about no rules to make
+	a target into a separate function.
+	(update_file_1): If we tried to rebuild a file during the makefile
+	rebuild phase and it was dontcare, then no message was printed.
+	If we then try to build the same file during the normal build,
+	print a message this time.
+	(remake_file): Don't complain about un-remake-able files when
+	we're rebuilding makefiles.
+
+2004-05-11  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (construct_command_argv_internal): OS/2 patches from
+	Andreas Buening <andreas.buening@nexgo.de>.
+
+2004-05-10  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (update_file): Don't walk the double-colon chain unless
+	this is a double-colon rule.  Fix suggested by Boris Kolpackov
+	<boris@kolpackov.net>.
+
+	* makefile.vms (CFLAGS): Remove glob/globfree (see readme.vms docs)
+	* readme.vms: New section describing OpenVMS support and issues.
+	* default.c (default_variables): Add support for IA64.
+	* job.c (tryToSetupYAst) [VMS]: On VMS running make in batch mode
+	without some privilege aborts make with the error
+	%SYSTEM-F-NOPRIV. It happens when setting up a handler for
+	pressing Ctrl+Y and the input device is no terminal. The change
+	catches this error and just continues.
+
+	Patches by Hartmut Becker <Hartmut.Becker@hp.com>
+
+2004-04-25  Paul D. Smith  <psmith@gnu.org>
+
+	* commands.c (set_file_variables): Set $< properly in the face of
+	order-only prerequisites.
+	Patch from Boris Kolpackov <boris@kolpackov.net>
+
+2004-04-21  Bob Byrnes  <byrnes@curl.com>
+
+	* main.c (main): Notice failures to remake makefiles.
+
+2004-03-28  Paul D. Smith  <psmith@gnu.org>
+
+	Patches for Acorn RISC OS by Peter Naulls <peter@chocky.org>
+
+	* job.c: No default shell for RISC OS.
+	(load_too_high): Hard-code the return to 1.
+	(construct_command_argv_internal): No sh_chars or sh_cmds.
+	* getloadavg.c: Don't set LOAD_AVE_TYPE on RISC OS.
+
+2004-03-20  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (do_variable_definition): Don't append from the
+	global set if a previous non-appending target-specific variable
+	definition exists.  Reported by Oliver Schmidt <oschmidt@gmx.net>
+	(with fix).
+
+	* expand.c (reference_variable): Don't give up on variables with
+	no value that have the target-specific append flag set: they might
+	have a value after all.  Reported by Oliver Schmidt
+	<oschmidt@gmx.net> (with fix) and also by Maksim A. Nikulin
+	<nikulin@dx1cmd.inp.nsk.su>.
+
+	* rule.c (count_implicit_rule_limits): Don't delete patterns which
+	refer to absolute pathnames in directories that don't exist: some
+	portion of the makefile could create those directories before we
+	match the pattern.  Fixes bugs #775 and #108.
+
+	Fixes from Jonathan R. Grant  <jg-make@jguk.org>:
+
+	* main.c (main): Free makefile_mtimes if we have any.
+	* README.W32.template: Update documentation for the current status
+	of the MS-Windows port.
+	* NMakefile.template (MAKE): Add "MAKE = nmake".  A conflicting
+	environment variable is sometimes already defined which causes the
+	build to fail.
+	* main.c (debug_signal_handler): Only define this function if
+	SIGUSR1 is available.
+
+	Fixes for OS/2 from Andreas Beuning <andreas.buening@nexgo.de>:
+
+	* configure.in [OS/2]: Relocate setting of HAVE_SA_RESTART for OS/2.
+	* README.OS2.template: Documentation updates.
+	* build.template: Add LIBINTL into LOADLIBES.  Add $CFLAGS to the
+	link line for safety.
+	* maintMakefile (build.sh.in): Remove an extraneous ")".
+	* job.c (child_execute_job): Close saved FDs.
+	* job.c (exec_command) [OS/2]: exec_command(): If the command
+	can't be exec'ed and if the shell is not Unix-sh, then try again
+	with argv = { "cmd", "/c", ... }. Normally, this code is never
+	reached for the cmd shell unless the command really doesn't exist.
+	(construct_command_argv_internal) [OS/2]: The code for cmd
+	handling now uses new_argv = { "cmd", "/c", "original line", NULL}.
+	The CMD builtin commands are case insensitive so use strcasecmp().
+
+2004-03-19  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (do_define): Re-order line counter increment so the count
+	is accurate (we were losing one line per define).  Reported by
+	Dave Yost <Dave@Yost.com>.
+
+2004-03-06  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in (HAVE_ANSI_COMPILER): Define if we have an ANSI/ISO
+	compiler.
+	* make.h: Convert uses of __STDC__ to HAVE_ANSI_COMPILER.
+	* misc.c (message,error,fatal): Ditto.
+	* configh.dos.template: Define HAVE_ANSI_COMPILER.
+	* config.h.W32.template: Ditto.
+	* config.h-vms.template: Ditto.
+	* config.ami.template: Ditto.
+
+2004-03-04  Paul D. Smith  <psmith@gnu.org>
+
+	* README.template: Add a note about broken /bin/sh on SunOS
+	4.1.3_U1 & 4.1.4.  Fix up Savannah links.
+
+	* misc.c (message, error, fatal): Don't use "..." if we're using
+	varargs.  ansi2knr should handle this but it doesn't work: it
+	translates "..." to va_dcl etc. but _AFTER_ the preprocessor is
+	done.  On many systems (SunOS for example) va_dcl is a #define.
+	So, force the use of the non-"..." version on pre-ANSI compilers.
+
+	* maintMakefile (sign-dist): Create some rules to help automate
+	the new GNU ftp upload method.
+
+2004-02-24  Paul D. Smith  <psmith@gnu.org>
+
+	* config.h.W32.template: Add HAVE_STDARG_H
+	* config.h-vms.template: Ditto.
+	* config.ami.template: Ditto.
+
+2004-02-23  Jonathan Grant  <jg-make@jguk.org>
+
+	* README.W32.template: Add a notation about -j with BATCH_MODE_ONLY.
+	* build_w32.bat: Remove extra "+".
+
+2004-02-23  Paul D. Smith  <psmith@gnu.org>
+
+	* make.h: Create an UNUSED macro to mark unused parameters.
+	* (many): Clean up warnings by applying UNUSED, fixing
+	signed/unsigned incompatibilities, etc.
+
+	* acinclude.m4 (AC_STRUCT_ST_MTIM_NSEC): Add quoting to silence
+	autoconf warnings.
+	* filedef.h: Name the command_state enumeration.
+	* file.c (set_command_state): Use the enumeration in the function
+	argument.
+
+	* configure.in: Explicitly set SET_MAKE to empty, to disable
+	MAKE=make even when no make already exists.  Fix bug #3823.
+
+2004-02-22  Paul D. Smith  <psmith@gnu.org>
+
+	* maintMakefile: Perl script to clean up all non-CVS files.  Use
+	it on all the subdirectories for the cvs-clean target.
+
+	* main.c (decode_switches): Require non-empty strings for all our
+	string command-line options.  Fixes Debian bug # 164165.
+
+	* configure.in: Check for stdarg.h and varargs.h.
+	* make.h (USE_VARIADIC): Set this if we can use variadic functions
+	for printing messages.
+	* misc.c: Check USE_VARIADIC instead of (obsolete) HAVE_STDVARARGS.
+	(message): Ditto.
+	(error): Ditto.
+	(fatal): Ditto.
+
+	A number of patches for OS/2 support from Andreas Buening
+	<andreas.buening@nexgo.de>:
+
+	* job.c (child_handler) [OS/2]: Allow this on OS/2 but we have to
+	disable the SIGCHLD handler.
+	(reap_children) [OS/2]: Remove special handling of job_rfd.
+	(set_child_handler_action_flags) [OS/2]: Use this function in OS/2.
+	(new_job) [OS/2]: Disable the SIGCHLD handler on OS/2.
+	* main.c (main) [OS/2]: Special handling for paths in OS/2.
+	* configure.in [OS/2]: Force SA_RESTART for OS/2.
+	* Makefile.am (check-regression): Use $(EXEEXT) for Windows-type
+	systems.
+
+2004-02-21  Paul D. Smith  <psmith@gnu.org>
+
+	* w32/subproc/sub_proc.c (process_easy) [W32]: Christoph Schulz
+	<mail@kristov.de> reports that if process_begin() fails we don't
+	handle the error condition correctly in all cases.
+	* w32/subproc/w32err.c (map_windows32_error_to_string): Make sure
+	to have a newline on the message.
+
+	* job.c (construct_command_argv_internal): Add "test" to UNIX
+	sh_cmds[].  Fixes Savannah bug # 7606.
+
+2004-02-04  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (vms_handle_apos) [VMS]: Fix various string handling
+	situations in VMS DCL.  Fixes Savannah bug #5533.  Fix provided by
+	Hartmut Becker <Hartmut.Becker@hp.com>.
+
+2004-01-21  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (load_too_high): Implement an algorithm to control the
+	"thundering herd" problem when using -l to control job creation
+	via the load average.  The system only recomputes the load once a
+	second but we can start many jobs in a second.  To solve this we
+	keep track of the number of jobs started in the last second and
+	apply a weight to try to guess what a correct load would be.
+	The algorithm was provided by Thomas Riedl <thomas.riedl@siemens.com>.
+	Also fixes bug #4693.
+	(reap_children): Decrease the job count for this second.
+	(start_job_command): Increase the job count for this second.
+
+	* read.c (conditional_line): Expand the text after ifn?def before
+	checking to see if it's a single word.  Fixes bug #7257.
+
+2004-01-09  Paul D. Smith  <psmith@gnu.org>
+
+	* file.c (print_file): Recurse to print all targets in
+	double-colon rules.  Fixes bug #4518, reported (with patch) by
+	Andrew Chatham <chatham@google.com>.
+
+2004-01-07  Paul D. Smith  <psmith@gnu.org>
+
+	* acinclude.m4: Remove make_FUNC_SETVBUF_REVERSED.
+	* configure.in: Change make_FUNC_SETVBUF_REVERSED to
+	AC_FUNC_SETVBUF_REVERSED.
+
+	* doc/make.texi (Target-specific): Fix Savannah bug #1772.
+	(MAKE Variable): Fix Savannah bug #4898.
+
+	* job.c (construct_command_argv_internal): Add "!" to the list of
+	shell escape chars.  POSIX sh allows it to appear before a
+	command, to negate the exit code.  Fixes bug #6404.
+
+	* implicit.c (pattern_search): When matching an implicit rule,
+	remember which dependencies have the ignore_mtime flag set.
+	Original fix provided in Savannah patch #2349, by Benoit
+	Poulot-Cazajous <Benoit.Poulot-Cazajous@jaluna.com>.
+
+2003-11-22  Paul D. Smith  <psmith@gnu.org>
+
+	* README.W32.template (Outputs): Clarification on -j with
+	BATCH_MODE_ONLY_SEHLL suggested by Jonathan R. Grant
+	<jg-make@jguk.org>.
+
+2003-11-02  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (func_if): Strip all the trailing whitespace from the
+	condition, then don't expand it.  Fixed bug # 5798.
+
+	* expand.c (recursively_expand_for_file): If we're expanding a
+	variable with no file context, then use the variable's context.
+	Fixes bug # 6195.
+
+2003-10-21  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (log_working_directory): Add newlines to printf()s.
+
+	* README.cvs: Add a note to ignore warnings during autoreconf.
+
+	* maintMakefile (po_repo): Set a new URL for PO file updates.
+	(get-config/config.guess get-config/config.sub): Get these files
+	from the Savannah config project instead of ftp.gnu.org.
+
+2003-10-05  Paul Eggert  <eggert@twinsun.com>
+
+	* main.c (main): Avoid potential subscript error if environ has
+	short strings.
+
+2003-08-22  Paul D. Smith  <psmith@gnu.org>
+
+	* misc.c (xmalloc, xrealloc): Add one to 0 sizes, to cater to
+	systems which don't yet implement the C89 standard :-/.
+
+2003-07-18  Paul D. Smith  <psmith@gnu.org>
+
+	* dir.c (directory_contents_hash_1, directory_contents_hash_1)
+	[WINDOWS32]: Initialize hash.
+
+2003-06-19  Earnie Boyd  <earnie@uses.sf.net>
+
+	* dir.c (read_dirstream): Provide a workaround for broken versions of
+	the MinGW dirent structure.
+
+2003-05-30  Earnie Boyd  <earnie@users.sf.net>
+
+	* w32/include/dirent.h: Add __MINGW32__ filter.
+
+2003-05-30  Earnie Boyd  <earnie@users.sf.net>
+
+	* make.h: Add global declaration of *make_host.
+	* main.c (print_usage): Remove local declaration of *make_host.
+	(print_version): Display "This program built for ..." after Copyright
+	notice.
+
+2003-05-30  Earnie Boyd  <earnie@users.sf.net>
+
+	* doc/make.texi: Change "ifinfo" to "ifnottex" as suggested by the
+	execution of "makeinfo --html make.texi".
+
+2003-04-30  Paul D. Smith  <psmith@gnu.org>
+
+	* build.template: Make some changes to maybe allow this script to
+	work on DOS/Windows/OS2 systems.  Suggested by Andreas Buening.
+
+	* README.OS2.template: New file for OS/2 support.  Original
+	contributed by Andreas Buening.
+	* configure.in: Invoke new pds_AC_DOS_PATHS macro to test for
+	DOS-style paths.
+
+2003-04-19  Paul D. Smith  <psmith@gnu.org>
+
+	Fix bug #1405: allow a target to match multiple pattern-specific
+	variables.
+
+	* rule.c (create_pattern_var, lookup_pattern_var): Move these to
+	variable.c, where they've always belonged.
+	* rule.h: Move the prototypes and struct pattern_var as well.
+	* variable.c (initialize_file_variables): Invoke
+	lookup_pattern_var() in a loop, until no more matches are found.
+	If a match is found, create a new variable set for the target's
+	pattern variables.  Then merge the contents of each matching
+	pattern variable set into the target's pattern variable set.
+	(lookup_pattern_var): Change this function to be usable
+	in a loop.  It takes a starting position: if NULL, start at the
+	beginning; if non-NULL, start with the pattern variable after that
+	position, and return the next matching pattern.
+	(create_pattern_var): Create a unique instance of
+	pattern-specific variables for every definition in the makefile.
+	Don't combine the same pattern together.  This allows us to
+	process the variable handling properly even when the same pattern
+	is used multiple times.
+	(parse_variable_definition): New function: break out the parsing
+	of a variable definition line from try_variable_definition.
+	(try_variable_definition): Call parse_variable_definition to
+	parse.
+	(print_variable_data_base): Print out pattern-specific variables.
+	* variable.h (struct variable): Remember when a variable is
+	conditional.  Also remember its flavor.
+	(struct pattern_var): Instead of keeping a variable set, we just
+	keep a single variable for each pattern.
+	* read.c (record_target_var): Each pattern variable contains only a
+	single variable, not a set, so create it properly.
+	* doc/make.texi (Pattern-specific): Document the new behavior.
+
+2003-04-17  Paul D. Smith  <psmith@gnu.org>
+
+	* dir.c (file_exists_p) [VMS]: Patch provided with Bug #3018 by
+	Jean-Pierre Portier <portierjp2@free.fr>.  I don't understand the
+	file/directory naming rules for VMS so I can't tell whether this
+	is correct or not.
+
+2003-04-09  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in (HAVE_DOS_PATHS): Define this on systems that need
+	DOS-style pathnames: backslash separators and drive specifiers.
+
+2003-03-28  Paul D. Smith  <psmith@gnu.org>
+
+	* file.c (snap_deps): If .SECONDARY with no targets is given, set
+	the intermediate flag on all targets.  Fixes bug #2515.
+
+2003-03-24  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in, Makefile.am, glob/Makefile.am, doc/Makefile.am:
+	Upgrade to autoconf 2.57 and automake 1.7.3.
+
+	* job.c: More OS/2 changes from Andreas Buening.
+
+	* file.c (print_file): Fix variable initialization.
+	Fixes bug #2892.
+
+	* remake.c (notice_finished_file):
+
+	* make.h (ENULLLOOP): Set errno = 0 before invoking the command;
+	some calls (like readdir()) return NULL in valid situations
+	without resetting errno.  Fixes bug #2846.
+
+2003-02-25  Paul D. Smith  <psmith@gnu.org>
+
+	Port to OS/2 (__EMX__) by Andreas Buening <andreas.buening@nexgo.de>.
+
+	* job.c (_is_unixy_shell) [OS/2]: New function.
+	Set default shell to /bin/sh.
+	(reap_children): Close the job_rfd pipe here since we don't use a
+	SIGCHLD handler.
+	(set_child_handler_action_flags): define this to empty on OS/2.
+	(start_job_command): Close the jobserver pipe and use
+	child_execute_job() instead of fork/exec.
+	(child_execute_job): Rewrite to handle stdin/stdout FDs and spawn
+	rather than exec'ing, then reconfigure stdin/stdout.
+	(exec_command): Rewrite to use spawn instead of exec.  Return the
+	PID of the child.
+
+	* main.c (main) [OS/2]: Call initialize_main().  Handle argv[0] as
+	in DOS.  Handle the TEMP environment variable as in DOS.  Don't
+	use a SIGCHLD handler on OS/2.  Choose a shell as in DOS.  Don't
+	use -j in DOS mode.  Use child_execute_job() instead of
+	exec_command().
+
+	* function.c (func_shell) [OS/2]: Can't use fork/exec on OS/2: use
+	spawn() instead.
+
+	* job.h [OS/2]: Move CLOSE_ON_EXEC here from job.c.  Add
+	prototypes that return values.
+
+	* remake.c (f_mtime) [OS/2]: Handle FAT timestamp offsets for OS/2.
+
+	* read.c (readline) [OS/2]: Don't handle CRLF specially on OS/2.
+	* default.c (default_suffixes) [OS/2]: Set proper default suffixes
+	for OS/2.
+	* vpath.c (construct_vpath_list) [OS/2]: Handle OS/2 paths like
+	DOS paths.
+
+2003-02-24  Paul D. Smith  <psmith@gnu.org>
+
+	* default.c [VMS]: New default rules for .cxx -> .obj compiles.
+	* job.c (child_execute_job) [VMS]: New code for handling spawn().
+	(child_execute_job) [VMS]: Handle error status properly.
+	Patches provided by Hartmut Becker <Hartmut.Becker@compaq.com>.
+
+	* function.c (func_shell): Use EINTRLOOP() while reading from the
+	subshell pipe (Fixes bug #2502).
+	* job.c (free_child): Use EINTRLOOP() while writing tokens to the
+	jobserver pipe.
+	* main.c (main): Ditto.
+
+2003-01-30  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (eval): eval() was not fully reentrant, because the
+	collapsed buffer was static.  Change it to be an automatic
+	variable so that eval() can be invoked recursively.
+	Fixes bug # 2238.
+	(eval): Apply patch # 1022: fix memory reference error on long
+	target-specific variable lines.
+	Patch provided by Steve Brown <Steve.Brown@macquarie.com>.
+
+	* function.c (check_numeric): Combine the is_numeric() function
+	into this function, since it's only called from one place.
+	Constify this function.  Have it print the incorrect string in the
+	error message.  Fixes bug #2407.
+	(strip_whitespace): Constify.
+	(func_if): Constify.
+	* expand.c (expand_argument): Constify.
+
+2003-01-29  Paul D. Smith  <psmith@gnu.org>
+
+	Fix bug # 2169, also reported by other people on various systems.
+
+	* make.h: Some systems, such as Solaris and PTX, do not fully
+	implement POSIX-compliant SA_RESTART functionality; important
+	system calls like stat() and readdir() can still fail with EINTR
+	even if SA_RESTART has been set on the signal handler.  So,
+	introduce macros EINTRLOOP() and ENULLLOOP() which can loop on
+	EINTR for system calls which return -1 or 0 (NULL), respectively,
+	on error.
+	Also, remove the old atomic_stat()/atomic_readdir() and
+	HAVE_BROKEN_RESTART handling.
+
+	* configure.in: Remove setting of HAVE_BROKEN_RESTART.
+
+	* arscan.c (ar_member_touch): Use EINTRLOOP() to wrap fstat().
+	* remake.c (touch_file): Ditto.
+
+	* commands.c (delete_target): Use EINTRLOOP() to wrap stat().
+	* read.c (construct_include_path): Ditto.
+	* remake.c (name_mtime): Ditto.
+	* vpath.c (selective_vpath_search): Ditto.
+	* dir.c (find_directory): Ditto.
+	(local_stat): Ditto.
+	(find_directory): Use ENULLLOOP() to wrap opendir().
+	(dir_contents_file_exists_p): Use ENULLLOOP() to wrap readdir().
+
+	* misc.c: Remove HAVE_BROKEN_RESTART, atomic_stat(), and
+	atomic_readdir() handling.
+
+2003-01-22  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (func_call): Fix Bug #1744.  If we're inside a
+	recursive invocation of $(call ...), mask any of the outer
+	invocation's arguments that aren't used by this one, so that this
+	invocation doesn't "inherit" them accidentally.
+
+2002-12-05  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (subst_expand): Valery Khamenia reported a
+	pathological performance hit when doing substitutions on very
+	large values with lots of words: turns out we were invoking
+	strlen() a ridiculous number of times.  Instead of having each
+	call to sindex() call strlen() again, keep track of how much of
+	the text we've seen and pass the length to sindex().
+
+2002-11-19  Paul D. Smith  <psmith@gnu.org>
+
+	* README.cvs, configure.in: Upgrade to require autoconf 2.56.
+
+
+2002-11-16  Paul D. Smith  <psmith@gnu.org>
+
+	* NMakefile.template (OBJS): Add hash.c object file.
+	* SMakefile.template (srcs): Ditto.
+	* Makefile.ami (objs): Ditto.
+	* build_w32.bat: Ditto.
+
+	* Makefile.DOS.template: Remove extra dependencies.
+
+2002-10-25  Paul D. Smith  <psmith@gnu.org>
+
+	* expand.c (install_variable_buffer): New function.  Install a new
+	variable_buffer context and return the previous one.
+	(restore_variable_buffer): New function.  Free the current
+	variable_buffer context and put a previously saved one back.
+	* variable.h: Prototypes for {install,restore}_variable_buffer.
+	* function.c (func_eval): Push a new variable_buffer context
+	before we eval, then restore the old one when we're done.
+	Fixes Bug #1517.
+
+	* read.c (install_conditionals): New function.  Install a new
+	conditional context and return the previous one.
+	(restore_conditionals): New function.  Free the current
+	conditional context and put a previously saved one back.
+	(eval): Use the {install,restore}_conditionals for "include"
+	handling.
+	(eval_buffer): Use {install,restore}_conditionals to preserve the
+	present conditional state before we evaluate the buffer.
+	Fixes Bug #1516.
+
+	* doc/make.texi (Quick Reference): Add references to $(eval ...)
+	and $(value ...).
+	(Recursion): Add a variable index entry for CURDIR.
+
+	* README.cvs: Update to appropriate versions.
+	* Makefile.am (nodist_loadavg_SOURCES): automake gurus point out I
+	don't need to copy loadavg.c: automake is smart enough to create
+	it for me.  Still have a bug in automake related to ansi2knr tho.
+
+2002-10-14  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (notice_finished_file): Only touch targets if they have
+	at least one command (as per POSIX).  Resolve Bug #1418.
+
+	* *.c: Convert to using ANSI C-style function definitions.
+	* Makefile.am: Enable the ansi2knr feature of automake.
+	* configure.in: ditto.
+
+2002-10-13  Paul D. Smith  <psmith@gnu.org>
+
+	* commands.c (set_file_variables): Bug #1379: Don't use alloca()
+	for automatic variable values like $^, etc.  In the case of very
+	large lists of prerequisites this causes problems.  Instead reuse
+	a static buffer (resizeable) for each variable.
+
+	* read.c (eval): Fix Bug #1391: allow "export" keyword in
+	target-specific variable definitions.  Check for it and set an
+	"exported" flag.
+	(record_target_var): Set the export field to v_export if the
+	"exported" flag is set.
+	* doc/make.texi (Target-specific): Document the ability to use
+	"export".
+
+	* doc/make.texi: Change the name of the section on automatic
+	variables from "Automatic" to "Automatic Variables".  Added text
+	clarifying the scope of automatic variables.
+
+2002-10-04  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (eval): Allow SysV $$@ variables to use {} braces as well
+	as () braces.
+	(record_files): Ditto.
+
+	* expand.c (variable_expand_string): In $(A:x=y) expansion limit
+	the search for the '=' to only within the enclosing parens.
+
+2002-10-03  Paul D. Smith  <psmith@gnu.org>
+
+	Version 3.80 released.
+
+	* dir.c: Change hash functions to use K&R function definition style.
+	* function.c: Ditto.
+	* read.c: Ditto.
+	* variable.c: Ditto.
+
+	Update to automake 1.7.
+
+	* Makefile.am (AUTOMAKE_OPTIONS): Update to require 1.7.
+	(pdf): Remove this target as automake now provides one.
+
+	* configure.in: Change AM_CONFIG_HEADER to AC_CONFIG_HEADERS.
+
+2002-09-30  Martin P.J. Zinser  <zinser@decus.de>
+
+	* makefile.com: Updates for GNU make 3.80.
+	* makefile.vms: Ditto.
+
+2002-09-23  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (enum make_word_type): Remove w_comment.
+	(get_next_mword): Don't treat comment characters as special; where
+	this function is used we will never see a comment (it's stripped
+	before we get here) and treating comments specially means that
+	targets like "foo\#bar" aren't handled properly.
+
+2002-09-18  Paul D. Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Bugs): Update with some info on Savannah, etc.
+
+	* read.c (eval): Expansion of arguments to export/unexport was
+	ignoring all arguments after the first one.  Change the algorithm
+	to expand the whole line once, then parse the results.
+
+2002-09-17  Paul D. Smith  <psmith@gnu.org>
+
+	Fix Bug #940 (plus another bug I found while looking at this):
+
+	* read.c (record_target_var): enter_file() will add a new entry if
+	it's a double-colon target: we don't want to do that in this
+	situation.  Invoke lookup_file() and only enter_file() if it does
+	not already exist.  If the file we get back is a double-colon then
+	add this variable to the "root" double-colon target.
+
+	* variable.c (initialize_file_variables): If this file is a
+	double-colon target but is not the "root" target, then initialize
+	the root and make the root's variable list the parent of our
+	variable list.
+
+2002-09-13  Paul D. Smith  <psmith@gnu.org>
+
+	* doc/make.texi (MAKE Variable): Add some indexing for "+".
+
+	* hash.c (round_up_2): Get rid of a warning.
+
+2002-09-12  Paul D. Smith  <psmith@gnu.org>
+
+	* Makefile.am (loadavg_SOURCES, loadavg.c): Tiptoe around automake
+	so it doesn't complain about getloadavg.c.
+
+	* commands.c (set_file_variables): Make sure we always alloca() at
+	least 1 character for the value of $? (for '\0').
+
+2002-09-11  Paul D. Smith  <psmith@gnu.org>
+
+	* hash.h (STRING_COMPARE, ISTRING_COMPARE, STRING_N_COMPARE): Fix
+	macro to use RESULT instead of the incorrect _RESULT_.
+
+	* make.h (HAVE_BROKEN_RESTART): Add prototypes for atomic_stat()
+	and atomic_readdir().  We need to #include dirent.h to get this to
+	work.
+	* misc.c (atomic_readdir): Fix typos.
+
+2002-09-10  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (eval): Expand variable lists given to export and
+	unexport, so that "export $(LIST_OF_VARIABLES)" (etc.) works.
+	(conditional_line): Ditto for "ifdef".  Fixes bug #103.
+
+	* doc/make.texi (Variables/Recursion): Document this.
+	(Conditional Syntax): And here.
+
+2002-09-09  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Check for memmove().
+
+2002-09-07  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in (HAVE_BROKEN_RESTART): Define this on PTX systems;
+	Michael Sterrett <msterret@coat.com> reports that while it has
+	SA_RESTART, it does not work properly.
+
+	* misc.c (atomic_stat): If HAVE_BROKEN_RESTART, create a function
+	that invokes stat() and loops to do it again if it returns EINTR.
+	(atomic_readdir): Ditto, with readdir().
+
+	* make.h (stat, readdir): If HAVE_BROKEN_RESTART, alias stat()
+	and readdir() to atomic_stat() and atomic_readdir().
+
+2002-09-04  Paul D. Smith  <psmith@gnu.org>
+
+	* implicit.c (pattern_search): Daniel <barkalow@reputation.com>
+	reports that GNU make sometimes doesn't recognize that targets can
+	be made, when directories can be created as prerequisites.  He
+	reports that changing the order of predicates in the DEP->changed
+	flag test so that lookup_file() is always performed, solves this
+	problem.
+
+2002-08-08  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Require a newer version of gettext.
+
+	* misc.c (perror_with_name): Translate the format string (for
+	right-to-left language support).
+	(pfatal_with_name): Ditto.
+
+	* main.c: Create a static array of strings to store the usage
+	text.  This is done to facilitate translations.
+	(struct command_switch): Remove argdesc and description fields.
+	(switches): Remove values for obsolete fields.
+	(print_usage): Print each element of the usage array.
+
+	* hash.c: Change function definitions to be K&R style.
+
+2002-08-02  Paul D. Smith  <psmith@gnu.org>
+
+	* NEWS: Remove the mention of .TARGETS; we aren't going to publish
+	this one because it's too hard to get right.  We'll look at it for
+	a future release.
+	* main.c (main): Don't create the .TARGETS variable.
+	* variable.c (handle_special_var): Don't handle .TARGETS.
+
+2002-08-01  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (switches): Add a new option, -B (--always-make).  If
+	specified, make will rebuild all targets that it encounters even
+	if they don't appear to be out of date.
+	(always_make_flag): New flag.
+	* make.h: Extern always_make_flag.
+	* remake.c (update_file_1): Check always_make_flag; if it's set we
+	will always rebuild any target we can, even if none of its
+	prerequisites are newer.
+	* NEWS: Mention it.
+
+	* doc/make.texi (Shell Function): Make it clear that make
+	variables marked as "export" are not passed to instances of the
+	shell function.
+
+	Add new introspection variable .VARIABLES and .TARGETS.
+
+	* variable.c (handle_special_var): New function.  If the variable
+	reference passed in is "special" (.VARIABLES or .TARGETS),
+	calculate the new value if necessary.  .VARIABLES is handled here:
+	walk through the hash of defined variables and construct a value
+	which is a list of the names.  .TARGETS is handled by
+	build_target_list().
+	(lookup_variable): Invoke handle_special_var().
+	* file.c (build_target_list): Walk through the hask of known files
+	and construct a list of the names of all the ones marked as
+	targets.
+	* main.c (main): Initialize them to empty (and as simple variables).
+	* doc/make.texi (Special Variables): Document them.
+	* NEWS: Mention them.
+
+	* variable.h (struct variable): Add a new flag "exportable" which
+	is true if the variable name is valid for export.
+	* variable.c (define_variable_in_set): Set "exportable" when a new
+	variable is defined.
+	(target_environment): Use the "exportable" flag	instead of
+	re-checking the name here... an efficiency improvement.
+
+2002-07-31  Paul D. Smith  <psmith@gnu.org>
+
+	* config.h-vms.template: Updates to build on VMS.  Thanks to
+	Brian_Benning@aksteel.com for helping verify the build.
+	* makefile.com: Build the new hash.c file.
+	* hash.h: Use strcpmi(), not stricmp(), in the
+	HAVE_CASE_INSENSITIVE_FS case.
+
+2002-07-30  Paul D. Smith  <psmith@gnu.org>
+
+	* hash.h (ISTRING_COMPARE, return_ISTRING_COMPARE): Add missing
+	backslashes to the HAVE_CASE_INSENSITIVE_FS case.
+	Reported by <Brian_Benning@aksteel.com>.
+
+2002-07-10  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (pop_variable_scope): Remove variable made unused by
+	new hash infrastructure.
+	* read.c (dep_hash_cmp): Rewrite this to handle ignore_mtime
+	comparisons as well as name comparisons.
+	* variable.h: Add a prototype for new hash_init_function_table().
+	* file.c (lookup_file): Remove variables made unused by new hash
+	infrastructure.
+	* dir.c (directory_contents_hash_2): Missing return of hash value.
+	(dir_contents_file_exists_p): Remove variables made unused by new
+	hash infrastructure.
+
+
+	Installed Greg McGary's integration of the hash functions from the
+	GNU id-utils package:
+
+2002-07-10  Greg McGary  <greg@mcgary.org>
+
+	* scripts/functions/filter-out: Add literals to to the
+	pattern space in order to add complexity, and trigger
+	use of an internal hash table.  Fix documentation strings.
+	* scripts/targets/INTERMEDIATE: Reverse order of files
+	passed to expected `rm' command.
+
+2002-07-10  Greg McGary  <greg@mcgary.org>
+
+	* Makefile.am (SRCS): Add hash.c (noinst_HEADERS): Add hash.h
+	* hash.c: New file, taken from id-utils.
+	* hash.h: New file, taken from id-utils.
+
+	* make.h (HASH, HASHI): Remove macros.
+	(find_char_unquote): Change arglist in decl.
+	(hash_init_directories): New function decl.
+	* variable.h (hash.h): New #include.
+	(MAKELEVEL_NAME, MAKELEVEL_LENGTH): New constants.
+	* filedef.h (hash.h): New #include.
+	(struct file) [next]: Remove member.
+	(file_hash_enter): Remove function decl.
+	(init_hash_files): New function decl.
+
+	* ar.c (ar_name): Delay call to strlen until needed.
+	* main.c (initialize_global_hash_tables): New function.
+	(main): Call it.  Use MAKELEVEL_NAME & MAKELEVEL_LENGTH.
+	* misc.c (remove_comments): Pass char constants to find_char_unquote.
+	* remake.c (notice_finished_file): Update last_mtime on `prev' chain.
+
+	* dir.c (hash.h): New #include.
+	(struct directory_contents) [next, files]: Remove members.
+	[ctime]: Add member for VMS.  [dirfiles]: Add hash-table member.
+	(directory_contents_hash_1, directory_contents_hash_2,
+	directory_contents_hash_cmp): New functions.
+	(directories_contents): Change type to `struct hash_table'.
+	(struct directory) [next]: Remove member.
+	(directory_hash_1, directory_hash_2, directory_hash_cmp): New funcs.
+	(directory): Change type to `struct hash_table'.
+	(struct dirfile) [next]: Remove member.
+	[length]: Add member.  [impossible]: widen type to fill alignment gap.
+	(dirfile_hash_1, dirfile_hash_2, dirfile_hash_cmp): New functions.
+	(find_directory): Use new hash table package.
+	(dir_contents_file_exists_p): Likewise.
+	(file_impossible): Likewise.
+	(file_impossible_p): Likewise.
+	(print_dir_data_base): Likewise.
+	(open_dirstream): Likewise.
+	(read_dirstream): Likewise.
+	(hash_init_directories): New function.
+
+	* file.c (hash.h): New #include.
+	(file_hash_1, file_hash_2, file_hash_cmp): New functions.
+	(files): Change type to `struct hash_table'.
+	(lookup_file): Use new hash table package.
+	(enter_file): Likewise.
+	(remove_intermediates): Likewise.
+	(snap_deps): Likewise.
+	(print_file_data_base): Likewise.
+
+	* function.c
+	(function_table_entry_hash_1, function_table_entry_hash_2,
+	function_table_entry_hash_cmp): New functions.
+	(lookup_function): Remove `table' argument.
+	Use new hash table package.
+	(struct a_word) [chain, length]: New members.
+	(a_word_hash_1, a_word_hash_2, a_word_hash_cmp): New functions.
+	(struct a_pattern): New struct.
+	(func_filter_filterout): Pass through patterns noting boundaries
+	and '%', if present.  Note a_word length.  Use a hash table if
+	arglists are large enough to justify cost.
+	(function_table_init): Renamed from function_table.
+	(function_table): Declare as `struct hash_table'.
+	(FUNCTION_TABLE_ENTRIES): New constant.
+	(hash_init_function_table): New function.
+
+	* read.c (hash.h): New #include.
+	(read_makefile): Pass char constants to find_char_unquote.
+	(dep_hash_1, dep_hash_2, dep_hash_cmp): New functions.
+	(uniquize_deps): Use hash table to efficiently identify duplicates.
+	(find_char_unquote): Accept two char-constant stop chars, rather
+	than a string constant, avoiding zillions of calls to strchr.
+	Tighten inner search loops to test only for desired delimiters.
+
+	* variable.c (variable_hash_1, variable_hash_2,
+	variable_hash_cmp): New functions.
+	(variable_table): Declare as `struct hash_table'.
+	(global_variable_set): Remove initialization.
+	(init_hash_global_variable_set): New function.
+	(define_variable_in_set): Use new hash table package.
+	(lookup_variable): Likewise.
+	(lookup_variable_in_set): Likewise.
+	(initialize_file_variables): Likewise.
+	(pop_variable_scope): Likewise.
+	(create_new_variable_set): Likewise.
+	(merge_variable_sets): Likewise.
+	(define_automatic_variables): Likewise.
+	(target_environment): Likewise.
+	(print_variable_set): Likewise.
+
+2002-07-10  Paul D. Smith  <psmith@gnu.org>
+
+	Implement the SysV make syntax $$@, $$(@D), and $$(@F) in the
+	prerequisite list.  A real SysV make will expand the entire
+	prerequisites list _twice_: we don't do that as it's a big
+	backward-compatibility problem.  We only replace those specific
+	variables.
+
+	* read.c (record_files): Replace any $@, $(@D), and $(@F) variable
+	references left in the list of prerequisites.  Check for .POSIX as
+	we record targets, so we can disable non-POSIX behavior while
+	reading makefiles as well as running them.
+	(eval): Check the prerequisite list to see if we have anything
+	that looks like a SysV prerequisite variable reference.
+
+2002-07-09  Paul D. Smith  <psmith@gnu.org>
+
+	* doc/make.texi (Prerequisite Types): Add a new section describing
+	order-only prerequisites.
+
+	* read.c (uniquize_deps): If we have the same file as both a
+	normal and order-only prereq, get rid of the order-only prereq,
+	since the normal one supersedes it.
+
+2002-07-08  Paul D. Smith  <psmith@gnu.org>
+
+	* AUTHORS: Added Greg McGary to the AUTHORS file.
+	* NEWS: Blurbed order-only prerequisites.
+	* file.c (print_file): Show order-only deps properly when printing
+	the database.
+
+	* maintMakefile: Add "update" targets for wget'ing the latest
+	versions of various external files.  Taken from Makefile.maint in
+	autoconf, etc.
+
+	* dosbuild.bat: Somehow we got _double_ ^M's.  Remove them.
+	Reported by Eli Zaretskii <eliz@is.elta.co.il>.
+
+2002-07-07  Paul D. Smith  <psmith@gnu.org>
+
+	* po/*.po: Remove.  We'll use wget to retrieve them at release
+	time.
+
+	* variable.c (do_variable_definition) [W32]: On W32 using cmd
+	rather than a shell you get an exception.  Make sure we look up
+	the variable.  Patch provided by Eli Zaretskii <eliz@is.elta.co.il>.
+
+	* remake.c (notice_finished_file): Fix handling of -t flag.
+	Patch provided by Henning Makholm <henning@makholm.net>.
+
+	* implicit.c (pattern_search): Some systems apparently run short
+	of stack space, and using alloca() in this function caused an
+	overrun.  I modified it to use xmalloc() on the two variables
+	which seemed like they might get large.  Fixes Bug #476.
+
+	* main.c (print_version): Update copyright notice to conform with
+	GNU standards.
+	(print_usage): Update help output.
+
+	* function.c (func_eval): Create a new make function, $(eval
+	...).  Expand the arguments, put them into a buffer, then invoke
+	eval_buffer() on the resulting string.
+	(func_quote): Create a new function, $(quote VARNAME).  Inserts
+	the value of the variable VARNAME without expanding it any
+	further.
+
+	* read.c (struct ebuffer): Change the linebuffer structure to an
+	"eval buffer", which can be either a file or a buffer.
+	(eval_makefile): Move the code in the old read_makefile() which
+	located a makefile into here: create a struct ebuffer with that
+	information.  Have it invoke the new function eval() with that
+	ebuffer.
+	(eval_buffer): Create a new function that creates a struct ebuffer
+	that holds a string buffer instead of a file.  Have it invoke
+	eval() with that ebuffer.
+	(eval): New function that contains the guts of the old
+	read_makefile() function: this function parses makefiles.  Obtains
+	data to parse from the provided ebuffer.  Some modifications to
+	make the flow of the function cleaner and clearer.  Still could
+	use some work here...
+	(do_define): Takes a struct ebuffer instead of a FILE*.  Read the
+	contents of the define/endef variable from the ebuffer.
+	(readstring): Read the next line from a string-style ebuffer.
+	(readline): Read the next line from an ebuffer.  If it's a string
+	ebuffer, invoke readstring().  If it's a FILE* ebuffer, read it
+	from the file.
+
+	* dep.h (eval_buffer): Prototype eval_buffer();
+
+	* variable.c (do_variable_definition): Make sure that all
+	non-target-specific variables are registered in the global set.
+	If we're invoked from an $(eval ...) we might be inside a $(call
+	...) or other function which has pushed a variable scope; we still
+	want to define our variables from evaluated makefile code in the
+	global scope.
+
+2002-07-03  Greg McGary  <greg@mcgary.org>
+
+	* dep.h (struct dep) [ignore_mtime]: New member.
+	[changed]: convert to a bitfield.
+	* implicit.c (pattern_search): Zero ignore_mtime.
+	* main.c (main, handle_non_switch_argument): Likewise.
+	* rule.c (convert_suffix_rule): Likewise.
+	* read.c (read_all_makefiles, read_makefile, multi_glob): Likewise.
+	(read_makefile): Parse '|' in prerequisite list.
+	(uniquize_deps): Consider ignore_mtime when comparing deps.
+	* remake.c (update_file_1, check_dep): Don't force remake for
+	dependencies that have d->ignore_mtime.
+	* commands.c (FILE_LIST_SEPARATOR): New constant.
+	(set_file_variables): Don't include a
+	prerequisite in $+, $^ or $? if d->ignore_mtime.
+	Define $|.
+
+2002-06-18  Paul D. Smith  <psmith@gnu.org>
+
+	* make.texinfo: Updates for next revision.  New date/rev/etc.
+	Recreate all Info menus.  Change license on the manual to the GNU
+	Free Documentation License.  A number of typos.
+	(Variables Simplify): Don't use "-" before it's defined.
+	(Automatic Prerequisites): Rewrite the target example to work
+	properly if the compile fails.  Remove incorrect comments about
+	how "set -e" behaves.
+	(Text Functions): Move the "word", "wordlist", "words", and
+	"firstword" functions here, from "File Name Functions".
+	* make-stds.texi: Update from latest GNU version.
+	* fdl.texi: (created) Import the latest GNU version.
+
+2002-06-06  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (do_variable_definition): New function: extract the
+	part of try_variable_definition() that actually sets the value
+	into a separate function.
+	(try_variable_definition): Call do_variable_definition() after
+	parsing the variable definition string.
+	(define_variable_in_set): Make the name argument const.
+
+	* variable.h (enum variable_flavor): Make public.
+	(do_variable_definition): Create prototype.
+
+	* read.c (read_all_makefiles): Create a new built-in variable,
+	MAKEFILE_LIST.
+	(read_makefile): Add each makefile read in to this variable value.
+
+2002-05-18  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* Makefile.DOS.template: Tweak according to changes in the
+	distribution.  Add back the dependencies of *.o files.
+
+	* configh.dos.template: Synchronize with config.h.in.
+
+2002-05-09  Paul D. Smith  <psmith@gnu.org>
+
+	* file.c (file_timestamp_now): Use K&R function declaration.
+
+	* getloadavg.c (getloadavg): Merge setlocale() fix from sh-utils
+	getloadavg.c.  Autoconf thinks QNX is SVR4-like, but it isn't, so
+	#undef it.  Remove predefined setup of NLIST_STRUCT.  Decide
+	whether to include nlist.h based on HAVE_NLIST_H.  Change obsolete
+	NLIST_NAME_UNION to new HAVE_STRUCT_NLIST_N_UN_N_NAME.
+	* configure.in (NLIST_STRUCT): Define this if we have nlist.h and
+	nlist.n_name is a pointer rather than an array.
+
+	* acinclude.m4 (make_FUNC_SETVBUF_REVERSED): Grab the latest
+	version of AC_FUNC_SETVBUF_REVERSED from autoconf CVS.
+	* configure.in: Use it instead of the old version.
+
+	* main.c (main): Prefer setvbuf() to setlinebuf().
+
+2002-05-08  Paul D. Smith  <psmith@gnu.org>
+
+	* Makefile.am (make_LDADD): Add GETLOADAVG_LIBS.
+	(loadavg_LDADD): Ditto.
+
+2002-04-29  Paul D. Smith  <psmith@gnu.org>
+
+	* expand.c (recursively_expand_for_file): Rename
+	recursively_expand() to recursively_expand_for_file() and provide
+	an extra argument, struct file.  If the argument is provided, set
+	the variable scope to that of the file before expanding.
+	* variable.h (recursively_expand): Make this a macro that invokes
+	recursively_expand_for_file() with a NULL file pointer.
+	* variable.c (target_environment): Call the renamed function and
+	provide the current file context.
+	Fixes Debian bug #144306.
+
+2002-04-28  Paul D. Smith  <psmith@gnu.org>
+
+	Allow $(call ...) user-defined variables to be self-referencing
+	without throwing an error.  Allows implementation of transitive
+	closures, among other possibly useful things.
+	Requested by: Philip Guenther <guenther@sendmail.com>
+
+	* variable.h (struct variable): Add a new field: exp_count, and
+	new macros to hold its size and maximum value.
+	(warn_undefined): Make this a macro.
+	* variable.c (define_variable_in_set): Initialize it.
+	* expand.c (recursively_expand): If we detect recursive expansion
+	of a variable, check the exp_count field.  If it's greater than 0
+	allow the recursion and decrement the count.
+	(warn_undefined): Remove this (now a macro in variable.h).
+	* function.c (func_call): Before we expand the user-defined
+	function, modify its exp_count field to contain the maximum
+	number of recursive calls we'll allow.  After the call, reset it
+	to 0.
+
+2002-04-21  Paul D. Smith  <psmith@gnu.org>
+
+	Modified to use latest autoconf (2.53), automake (1.6.1), and
+	gettext (0.11.1).  We're using gettext's new "external" support,
+	to avoid including libintl source with GNU make.
+
+	* README.cvs: New file.  Explain how to build GNU make from CVS.
+
+	* configure.in: Modify checking for the system glob library.
+	Use AC_EGREP_CPP instead of AC_TRY_CPP.  Remove the setting of
+	GLOBDIR (we will always put "glob" in SUBDIRS, so automake
+	etc. will manage it correctly).  Set an automake conditional
+	USE_LOCAL_GLOB to decide whether to compile the glob library.
+
+	* getloadavg.c (main): Include make.h in the "TEST" program to
+	avoid warnings.
+
+	* Makefile.am: Remove special rules for loadavg.  Replace them
+	with Automake capabilities for building extra programs.
+
+	* signame.c: This file does nothing if the system provide
+	strsignal().  If not, it implements strsignal().  If the system
+	doesn't define sys_siglist, then we make our own; otherwise we use
+	the system version.
+	* signame.h: Removed.
+
+	* main.c (main): No need to invoke signame_init().  Update copyright.
+
+	* ABOUT-NLS: Removed.
+	* gettext.c: Removed.
+	* gettext.h: Get a simplified copy from the gettext package.
+	* po/*: Created.
+	* i18n/*.po: Moved to po/.
+	* i18n/: Removed.
+
+	* config/*: Created.  Contains package configuration helper files.
+	* config.guess, config.sub: Moved to config directory.
+
+	* configure.in (AC_CONFIG_FILES): Add po/Makefile.in, config/Makefile.
+	Rework to use new-style autoconf features.  Use the "external"
+	mode for gettext.  Make the build.sh config file conditional on
+	whether build.sh.in exists, to avoid autoconf errors.
+	* acinclude.m4: Removed almost all macros as being obsolete.
+	Rewrote remaining macros to use AC_DEFINE.
+	* acconfig.h: Removed.
+
+	* Makefile.am (EXTRA_DIST): Add config/config.rpath.  Use a
+	conditional to handle customs support.  Remove special handling
+	for i18n features.
+
+2002-04-20  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (func_call): Don't mark the argument variables $1,
+	etc. as recursive.  They've already been fully expanded so
+	there's no need to do it again, and doing so strips escaped $'s.
+	Reported by Sebastian Glita <glseba@yahoo.com>.
+
+	* remake.c (notice_finished_file): Walk through double-colon
+	entries via the prev field, not the next field!
+	Reported by Greg McGary <greg@mcgary.org>.
+
+	* main.c (main): If the user specifies -q and asks for a specific
+	target which is a makefile, we got an assert.  In that case it
+	turns out we should continue normally instead.
+
+	* i18n/de.po, i18n/fr.po: Installed an updated translation.
+
+	* i18n/he.po: Installed a new translation.
+
+2002-01-07  Paul D. Smith  <psmith@gnu.org>
+
+	* i18n/es.po, i18n/ru.po: Installed an updated translation.
+
+2001-12-04  Paul D. Smith  <psmith@gnu.org>
+
+	* i18n/ja.po: Installed an updated translation.
+
+2001-09-06  Paul Eggert  <eggert@twinsun.com>
+
+	* configure.in (AC_CHECK_HEADERS): Add sys/resource.h.
+	(AC_CHECK_FUNCS): Add getrlimit, setrlimit.
+
+	* main.c: Include <sys/resource.h> if it, getrlimit, and setrlimit
+	are available.
+	(main): Get rid of any avoidable limit on stack size.
+
+2001-09-04  Paul D. Smith  <psmith@gnu.org>
+
+	* i18n/da.po: Installed an updated translation.
+
+2001-08-03  Paul D. Smith  <psmith@gnu.org>
+
+	* i18n/fr.po: Installed an updated translation.
+	Resolves Debian	bug #106720.
+
+2001-06-13  Paul D. Smith  <psmith@gnu.org>
+
+	* i18n/da.po, configure.in (ALL_LINGUAS): Installed a new
+	translation.
+
+2001-06-11  Paul D. Smith  <psmith@gnu.org>
+
+	* i18n/ko.po: Installed a new translation.
+
+2001-05-06  Paul D. Smith  <psmith@gnu.org>
+
+	Modify the EINTR handling.
+
+	* job.c (new_job): Reorganize the jobserver algorithm.  Reorder
+	the way in which we manage the file descriptor/signal handler race
+	trap to be more efficient.
+
+2001-05-06  Paul Eggert  <eggert@twinsun.com>
+
+	Restart almost all system calls that are interrupted, instead
+	of worrying about EINTR.  The lone exception is the read() for
+	job tokens.
+
+	* configure.in (HAVE_SA_RESTART): New macro.
+	(MAKE_JOBSERVER): Define to 1 only if HAVE_SA_RESTART.
+	* main.c (main): Use SA_RESTART instead of the old,
+	nonstandard SA_INTERRUPT.
+
+	* configure.in (AC_CHECK_FUNCS): Add bsd_signal.
+	* main.c (bsd_signal): New function or macro,
+	if the implementation doesn't supply it.
+	(The bsd_signal function will be in POSIX 1003.1-200x.)
+	(HANDLESIG): Remove.
+	(main, FATAL_SIG): Use bsd_signal instead of signal or HANDLESIG.
+
+	* make.h (EINTR_SET): Remove.
+	(SA_RESTART): New macro.
+
+	* arscan.c (ar_member_touch): Don't worry about EINTR.
+	* function.c (func_shell): Likewise.
+	* job.c (reap_children, free_child, new_job): Likewise.
+	* main.c (main): Likewise.
+	* remake.c (touch_file, name_mtime): Likewise.
+
+	* arscan.c (ar_member_touch): Fix bug uncovered by EINTR removal;
+	if fstat failed with errno!=EINTR, the error was ignored.
+
+	* job.c (set_child_handler_action_flags): New function.
+	(new_job): Use it to temporarily clear the SIGCHLD action flags
+	while reading the token.
+
+2001-05-02  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (start_job_command): Don't add define/endef per-line flags
+	to the top-level flags setting.
+
+2001-04-03  Paul D. Smith  <psmith@gnu.org>
+
+	* arscan.c (VMS_get_member_info,ar_scan) [VMS]: VMS sets the low
+	bit on error, so check for odd return values, not non-0 return
+	values.
+	(VMS_get_member_info): Calculate the timezone differences correctly.
+	Reported by John Fowler <jfowler@nyx.net>.
+
+
+2001-03-14  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (lookup_variable) [VMS]: Null-terminate the variable
+	value before invoking define_variable().
+	Reported by John Fowler <jfowler@nyx.net>.
+
+2001-02-07  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (record_target_var): If we reset the variable due to a
+	command-line variable setting overriding it, turn off the "append"
+	flag.
+
+2001-01-17  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (lookup_variable) [VMS]: When getting values from the
+	environment, allocate enough space for the _value_ plus escapes,
+	not enough space for the name plus escapes :-/.
+	Reported by John Fowler <jfowler@nyx.net>.
+
+	* remake.c (f_mtime): Removed the "***" prefix from the mod time
+	warnings that make generates, so it doesn't look like an error.
+	Reported by Karl Berry <karl@gnu.org>.
+
+
+	Fix for PR/2020:  Rework appended target-specific variables.  I'm
+	fairly confident this algorithm is finally correct.
+
+	* expand.c (allocated_variable_append): Rewrite.  Instead of
+	expanding each appended variable then adding all the expanded
+	strings together, we append all the unexpanded values going up
+	through the variable set contexts, then expand the final result.
+	This behaves just like non-target-specific appended variable
+	values, while the old way didn't in various corner cases.
+	(variable_append): New function: recursively append the unexpanded
+	value of a variable, walking from the outermost variable scope to
+	the innermost.
+	* variable.c (lookup_variable): Remove the code that looked up the
+	variable set list if the found variable was "append".  We don't
+	need this anymore.
+	(lookup_variable_in_set): Make this non-static so we can use it
+	elsewhere.
+	(try_variable_definition): Use lookup_variable_in_set() rather
+	than faking out current_variable_set_list by hand (cleanup).
+	* variable.h: Add a prototype for the now non-static
+	lookup_variable_in_set().
+
+2000-11-17  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (f_mtime) [WINDOWS32]: On various advice, I changed the
+	WINDOWS32 port to assume timestamps can be up to 3 seconds away
+	before throwing a fit.
+
+2000-11-17  Paul D. Smith  <psmith@gnu.org>
+
+	* read.c (readline): CRLF calculations had a hole, if you hit the
+	buffer grow scenario just right.  Reworked the algorithm to avoid
+	the need for len or lastlen at all.  Problem description with
+	sample code chages provided by Chris Faylor <cgf@redhat.com>.
+
+2000-10-24  Paul D. Smith  <psmith@gnu.org>
+
+	* gettext.c (SWAP): Declare this with the prototype, otherwise
+	some systems don't work (non-32-bit?  Reported for Cray T3E).
+	Reported by Thorstein Thorsteinsson <thor@signe.teokem.lu.se>.
+
+2000-10-05  Paul D. Smith  <psmith@gnu.org>
+
+	* acinclude.m4 (AM_LC_MESSAGES): Remove undefined macro
+	AM_LC_MESSAGES; it doesn't seem to do anything anyway??
+
+	* i18n/gl.po, configure.in (ALL_LINGUAS): New Galician translation.
+
+2000-09-22  Paul D. Smith  <psmith@gnu.org>
+
+	* gettext.c: Don't #define _GETTEXT_H here; we only include some
+	parts of the real gettext.h here, and we expect to really include
+	the real gettext.h later.  If we keep this #define, it's ignored.
+
+2000-09-21  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (log_working_directory): Rework the text to use complete
+	sentences, to make life simpler for the translators.
+
+2000-08-29  Paul D. Smith  <psmith@gnu.org>
+
+	* file.c (remove_intermediates): Print a debug message before we
+	remove intermediate files, so the user (if she uses -d) knows
+	what's going on.
+
+2000-08-21  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (try_variable_definition): Change how we handle
+	target-specific append variable defns: instead of just setting the
+	value, expand it as an append _but_ only within the current
+	target's context.  Otherwise we lose all but the last value if the
+	variable is appended more than once within the current target
+	context.  Fixes PR/1831.
+
+2000-08-16  Paul D. Smith  <psmith@gnu.org>
+
+	* function.c (func_shell): Nul-terminate the buffer before
+	printing an exec error message (just in case it's not!).
+	Fixes PR/1860, reported by Joey Hess <joey@valinux.com>.
+
+2000-07-25  Paul D. Smith  <psmith@gnu.org>
+
+	* job.c (construct_command_argv_internal): Add "~" to the list of
+	sh_chars[] which disallow optimizing out the shell call.
+
+2000-07-23  Paul Eggert  <eggert@twinsun.com>
+
+	* NEWS, make.texinfo: Document .LOW_RESOLUTION_TIME, which
+	supersedes --disable-nsec-timestamps.
+	* make.texinfo: Consistently use "time stamp" instead of "timestamp".
+	* README: Remove --disable-nsec-timestamps.
+
+	* filedef.h (struct file.low_resolution_time): New member.
+	* file.c (snap_deps): Add support for .LOW_RESOLUTION_TIME.
+	* remake.c (update_file_1):
+	Avoid spurious rebuilds due to low resolution time stamps,
+	generalizing the earlier code that applied only to archive members.
+	(f_mtime): Archive members always have low resolution time stamps.
+
+	* configure.in: Remove --disable-nsec-timestamps, as this has
+	been superseded by .LOW_RESOLUTION_TIME.
+
+2000-07-23  Paul Eggert  <eggert@twinsun.com>
+
+	* configure.in (enable_nsec_timestamps): Renamed from
+	make_cv_nsec_timestamps, since enable/disable options
+	shouldn't be cached.
+
+2000-07-23  Bruno Haible  <haible@clisp.cons.org>
+       and  Paul Eggert  <eggert@twinsun.com>
+
+	* file.c (file_timestamp_now):
+	Use preprocessor-time check for FILE_TIMESTAMP_HI_RES
+	so that clock_gettime is not linked unless needed.
+
+	* filedef.h (FILE_TIMESTAMP_HI_RES):
+	Remove definition; "configure" now does this.
+
+	* configure.in (jm_AC_TYPE_UINTMAX_T): Move up,
+	to before high resolution file timestamp check,
+	since that check now uses uintmax_t.
+	(FILE_TIMESTAMP_HI_RES): Define to nonzero if the code should use
+	high resolution file timestamps.
+	(HAVE_CLOCK_GETTIME): Do not define if !FILE_TIMESTAMP_HI_RES,
+	so that we don't link in clock_gettime unnecessarily.
+
+2000-07-17  Paul D. Smith  <psmith@gnu.org>
+
+	* i18n/ja.po: New version of the translation file.
+
+2000-07-07  Paul D. Smith  <psmith@gnu.org>
+
+	* remake.c (f_mtime): If NO_FLOAT is defined, don't bother with
+	the offset calculation.
+	(name_mtime): Replace EINTR test with EINTR_SET macro.
+
+2000-07-07  Paul Eggert  <eggert@twinsun.com>
+
+	Fix for PR/1811:
+
+	* remake.c (update_file_1):
+	Avoid spurious rebuilds of archive members due to their
+	timestamp resolution being only one second.
+	(f_mtime): Avoid spurious warnings of timestamps in the future due to
+	the clock's resolution being lower than file timestamps'.
+	When warning about future timestamps, report only the discrepancy,
+	not the absolute value of the timestamp and the current time.
+
+	* file.c (file_timestamp_now): New arg RESOLUTION.
+	* filedef.h (file_timestamp_now): Likewise.
+	(FILE_TIMESTAMP_NS): Now returns int.  All uses changed.
+
+2000-07-05  Paul D. Smith  <psmith@gnu.org>
+
+	* variable.c (lookup_variable) [VMS]: Remove vestigial references
+	to listp.  Fixes PR/1793.
+
+2000-06-26  Paul Eggert  <eggert@twinsun.com>
+
+	* Makefile.am (MAINTAINERCLEANFILES): New macro, with stamp-pot in it.
+
+	* dir.c (vms_hash): Ensure ctype macro args are nonnegative.
+
+	* remake.c (f_mtime): Remove unused var memtime.
+
+2000-06-25  Martin Buchholz  <martin@xemacs.org>
+
+	* make.texinfo, NEWS, TODO.private: Minor spelling corrections.
+	Ran spell-check	on make.texinfo.
+
+2000-06-23  Paul D. Smith  <psmith@gnu.org>
+
+	* main.c (main): Replace EXIT_SUCCESS, EXIT_FAILURE, and
+	EXIT_TROUBLE with MAKE_SUCCESS, MAKE_FAILURE, and MAKE_TROUBLE.
+	* make.h: Define these macros.
+
+	* Version 3.79.1 released.
+
+	* configure.in: Add a new option, --disable-nsec-timestamps, to
+	avoid using sub-second timestamps on systems that support it.  It
+	can lead to problems, e.g. if your makefile relies on "cp -p".
+	* README.template: Document the issue with "cp -p".
+
+	* config.guess, config.sub: Updated.
+
+
+
+See ChangeLog.2, available in the Git repository at:
+
+	http://git.savannah.gnu.org/cgit/make.git/tree/
+
+for earlier changes.
+
+
+Copyright (C) 2000-2013 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/INSTALL b/src/kmk/INSTALL
new file mode 100644
index 0000000..095b1eb
--- /dev/null
+++ b/src/kmk/INSTALL
@@ -0,0 +1,231 @@
+Installation Instructions
+*************************
+
+Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004 Free
+Software Foundation, Inc.
+
+This file is free documentation; the Free Software Foundation gives
+unlimited permission to copy, distribute and modify it.
+
+Basic Installation
+==================
+
+These are generic installation instructions.
+
+   The `configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation.  It uses
+those values to create a `Makefile' in each directory of the package.
+It may also create one or more `.h' files containing system-dependent
+definitions.  Finally, it creates a shell script `config.status' that
+you can run in the future to recreate the current configuration, and a
+file `config.log' containing compiler output (useful mainly for
+debugging `configure').
+
+   It can also use an optional file (typically called `config.cache'
+and enabled with `--cache-file=config.cache' or simply `-C') that saves
+the results of its tests to speed up reconfiguring.  (Caching is
+disabled by default to prevent problems with accidental use of stale
+cache files.)
+
+   If you need to do unusual things to compile the package, please try
+to figure out how `configure' could check whether to do them, and mail
+diffs or instructions to the address given in the `README' so they can
+be considered for the next release.  If you are using the cache, and at
+some point `config.cache' contains results you don't want to keep, you
+may remove or edit it.
+
+   The file `configure.ac' (or `configure.in') is used to create
+`configure' by a program called `autoconf'.  You only need
+`configure.ac' if you want to change it or regenerate `configure' using
+a newer version of `autoconf'.
+
+The simplest way to compile this package is:
+
+  1. `cd' to the directory containing the package's source code and type
+     `./configure' to configure the package for your system.  If you're
+     using `csh' on an old version of System V, you might need to type
+     `sh ./configure' instead to prevent `csh' from trying to execute
+     `configure' itself.
+
+     Running `configure' takes awhile.  While running, it prints some
+     messages telling which features it is checking for.
+
+  2. Type `make' to compile the package.
+
+  3. Optionally, type `make check' to run any self-tests that come with
+     the package.
+
+  4. Type `make install' to install the programs and any data files and
+     documentation.
+
+  5. You can remove the program binaries and object files from the
+     source code directory by typing `make clean'.  To also remove the
+     files that `configure' created (so you can compile the package for
+     a different kind of computer), type `make distclean'.  There is
+     also a `make maintainer-clean' target, but that is intended mainly
+     for the package's developers.  If you use it, you may have to get
+     all sorts of other programs in order to regenerate files that came
+     with the distribution.
+
+Compilers and Options
+=====================
+
+Some systems require unusual options for compilation or linking that the
+`configure' script does not know about.  Run `./configure --help' for
+details on some of the pertinent environment variables.
+
+   You can give `configure' initial values for configuration parameters
+by setting variables in the command line or in the environment.  Here
+is an example:
+
+     ./configure CC=c89 CFLAGS=-O2 LIBS=-lposix
+
+   *Note Defining Variables::, for more details.
+
+Compiling For Multiple Architectures
+====================================
+
+You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory.  To do this, you must use a version of `make' that
+supports the `VPATH' variable, such as GNU `make'.  `cd' to the
+directory where you want the object files and executables to go and run
+the `configure' script.  `configure' automatically checks for the
+source code in the directory that `configure' is in and in `..'.
+
+   If you have to use a `make' that does not support the `VPATH'
+variable, you have to compile the package for one architecture at a
+time in the source code directory.  After you have installed the
+package for one architecture, use `make distclean' before reconfiguring
+for another architecture.
+
+Installation Names
+==================
+
+By default, `make install' will install the package's files in
+`/usr/local/bin', `/usr/local/man', etc.  You can specify an
+installation prefix other than `/usr/local' by giving `configure' the
+option `--prefix=PREFIX'.
+
+   You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files.  If you
+give `configure' the option `--exec-prefix=PREFIX', the package will
+use PREFIX as the prefix for installing programs and libraries.
+Documentation and other data files will still use the regular prefix.
+
+   In addition, if you use an unusual directory layout you can give
+options like `--bindir=DIR' to specify different values for particular
+kinds of files.  Run `configure --help' for a list of the directories
+you can set and what kinds of files go in them.
+
+   If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving `configure' the
+option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
+
+Optional Features
+=================
+
+Some packages pay attention to `--enable-FEATURE' options to
+`configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to `--with-PACKAGE' options, where PACKAGE
+is something like `gnu-as' or `x' (for the X Window System).  The
+`README' should mention any `--enable-' and `--with-' options that the
+package recognizes.
+
+   For packages that use the X Window System, `configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the `configure' options `--x-includes=DIR' and
+`--x-libraries=DIR' to specify their locations.
+
+Specifying the System Type
+==========================
+
+There may be some features `configure' cannot figure out automatically,
+but needs to determine by the type of machine the package will run on.
+Usually, assuming the package is built to be run on the _same_
+architectures, `configure' can figure that out, but if it prints a
+message saying it cannot guess the machine type, give it the
+`--build=TYPE' option.  TYPE can either be a short name for the system
+type, such as `sun4', or a canonical name which has the form:
+
+     CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+     OS KERNEL-OS
+
+   See the file `config.sub' for the possible values of each field.  If
+`config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+   If you are _building_ compiler tools for cross-compiling, you should
+use the `--target=TYPE' option to select the type of system they will
+produce code for.
+
+   If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with `--host=TYPE'.
+
+Sharing Defaults
+================
+
+If you want to set default values for `configure' scripts to share, you
+can create a site shell script called `config.site' that gives default
+values for variables like `CC', `cache_file', and `prefix'.
+`configure' looks for `PREFIX/share/config.site' if it exists, then
+`PREFIX/etc/config.site' if it exists.  Or, you can set the
+`CONFIG_SITE' environment variable to the location of the site script.
+A warning: not all `configure' scripts look for a site script.
+
+Defining Variables
+==================
+
+Variables not defined in a site shell script can be set in the
+environment passed to `configure'.  However, some packages may run
+configure again during the build, and the customized values of these
+variables may be lost.  In order to avoid this problem, you should set
+them in the `configure' command line, using `VAR=value'.  For example:
+
+     ./configure CC=/usr/local2/bin/gcc
+
+will cause the specified gcc to be used as the C compiler (unless it is
+overridden in the site shell script).
+
+`configure' Invocation
+======================
+
+`configure' recognizes the following options to control how it operates.
+
+`--help'
+`-h'
+     Print a summary of the options to `configure', and exit.
+
+`--version'
+`-V'
+     Print the version of Autoconf used to generate the `configure'
+     script, and exit.
+
+`--cache-file=FILE'
+     Enable the cache: use and save the results of the tests in FILE,
+     traditionally `config.cache'.  FILE defaults to `/dev/null' to
+     disable caching.
+
+`--config-cache'
+`-C'
+     Alias for `--cache-file=config.cache'.
+
+`--quiet'
+`--silent'
+`-q'
+     Do not print messages saying which checks are being made.  To
+     suppress all normal output, redirect it to `/dev/null' (any error
+     messages will still be shown).
+
+`--srcdir=DIR'
+     Look for the package's source code in directory DIR.  Usually
+     `configure' can determine that directory automatically.
+
+`configure' also accepts some other, not widely useful, options.  Run
+`configure --help' for more details.
+
diff --git a/src/kmk/Makefile.DOS.template b/src/kmk/Makefile.DOS.template
new file mode 100644
index 0000000..47d83eb
--- /dev/null
+++ b/src/kmk/Makefile.DOS.template
@@ -0,0 +1,587 @@
+# -*-Makefile-*- template for DJGPP
+# Makefile.in generated automatically by automake 1.2 from Makefile.am
+#
+# Copyright (C) 1994-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+SHELL = /bin/sh
+
+srcdir = .
+VPATH = $(srcdir)
+# $DJDIR is defined automatically by DJGPP to point
+# to the root of the DJGPP installation tree.
+prefix = /dev/env/DJDIR
+exec_prefix = ${prefix}
+
+bindir = /bin
+datadir = /share
+libdir = /lib
+infodir = /info
+mandir = /man
+includedir = /include
+oldincludedir = c:/djgpp/include
+
+DESTDIR = /dev/env/DJDIR
+
+pkgdatadir = $(datadir)/make
+pkglibdir = $(libdir)/make
+pkgincludedir = $(includedir)/make
+localedir = $(datadir)/locale
+
+INSTALL = ${exec_prefix}/bin/ginstall -c
+INSTALL_PROGRAM = ${exec_prefix}/bin/ginstall -c
+INSTALL_DATA = ${exec_prefix}/bin/ginstall -c -m 644
+INSTALL_SCRIPT = ${exec_prefix}/bin/ginstall -c
+transform = s,x,x,
+
+# This will fail even if they don't have a Unix-like shell (stock DOS
+# shell doesn't know about `false').  The only difference is that they
+# get "Error -1" instead of "Error 1".
+EXIT_FAIL = false
+
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+EXEEXT = .exe
+OBJEXT = o
+
+AR = ar
+AWK = gawk
+CC = gcc
+CPP = gcc -E
+LIBOBJS =
+MAKEINFO = ${exec_prefix}/bin/makeinfo
+PACKAGE = make
+PERL = perl
+RANLIB = ranlib
+REMOTE = stub
+VERSION = %VERSION%
+
+AUTOMAKE_OPTIONS = 1.2
+
+bin_PROGRAMS =	%PROGRAMS%$(EXEEXT)
+
+make_SOURCES =	%SOURCES%
+# This should include the glob/ prefix
+libglob_a_SOURCES =	%GLOB_SOURCES%
+make_LDADD =	  glob/libglob.a
+
+man_MANS =	make.1
+
+INCLUDES =	-I$(srcdir)/glob -DLIBDIR=\"$(prefix)$(libdir)\" -DINCLUDEDIR=\"$(prefix)$(includedir)\" -DLOCALEDIR=\"$(prefix)$(localedir)\"
+
+BUILT_SOURCES =	README build.sh-in
+
+EXTRA_DIST =	$(BUILT_SOURCES) $(man_MANS) README.customs remote-cstms.c  make-stds.texi texinfo.tex SCOPTIONS SMakefile  Makefile.ami README.Amiga config.ami amiga.c amiga.h  NMakefile README.DOS configh.dos configure.bat makefile.com  README.W32 build_w32.bat config.h-W32 subproc.bat make.lnk  config.h-vms makefile.vms README.VMS vmsdir.h vmsfunctions.c  vmsify.c gmk-default.scm gmk-default.h
+
+SUBDIRS =	glob doc
+mkinstalldirs = ${exec_prefix}/bin/gmkdir -p
+CONFIG_HEADER = config.h
+CONFIG_CLEAN_FILES =  build.sh
+PROGRAMS =  $(bin_PROGRAMS)
+
+MAKE_HOST = i386-pc-msdosdjgpp
+
+
+DEFS =  -I. -I$(srcdir) -I.
+CPPFLAGS = -DHAVE_CONFIG_H
+LDFLAGS =
+LIBS =
+make_OBJECTS =  %OBJECTS%
+make_DEPENDENCIES =    glob/libglob.a
+make_LDFLAGS =
+libglob_a_LIBADD =
+libglob_a_OBJECTS =  %GLOB_OBJECTS%
+noinst_LIBRARIES =	glob/libglob.a
+CFLAGS = -O2 -g
+COMPILE = $(CC) $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS)
+LINK = $(CC) $(CFLAGS) $(LDFLAGS) -o $@
+TEXI2DVI = texi2dvi
+TEXINFO_TEX = $(srcdir)/config/texinfo.tex
+INFO_DEPS = doc/make.info
+DVIS = doc/make.dvi
+TEXINFOS = doc/make.texi
+noinst_TEXINFOS = doc/fdl.texi doc/make-stds.texi
+man1dir = $(mandir)/man1
+MANS = $(man_MANS)
+
+NROFF = nroff
+DIST_COMMON =  README ABOUT-NLS AUTHORS COPYING ChangeLog INSTALL Makefile.am  Makefile.in NEWS acconfig.h aclocal.m4 alloca.c build.sh-in config.h-in  configure configure.ac getloadavg.c
+
+DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST)
+
+TAR = gtar
+GZIP = --best
+SOURCES = $(make_SOURCES)
+OBJECTS = $(make_OBJECTS)
+HEADERS = $(wildcard $(srcdir)/*.h)
+
+default: all
+
+.SUFFIXES:
+.SUFFIXES: .c .dvi .info .o .obj .ps .texi .tex .html
+
+mostlyclean-hdr:
+
+clean-hdr:
+
+distclean-hdr:
+	-rm -f config.h
+
+maintainer-clean-hdr:
+
+mostlyclean-binPROGRAMS:
+
+clean-binPROGRAMS:
+	-test -z "$(bin_PROGRAMS)" || rm -f $(bin_PROGRAMS)
+
+distclean-binPROGRAMS:
+
+maintainer-clean-binPROGRAMS:
+
+install-binPROGRAMS: $(bin_PROGRAMS)
+	@$(NORMAL_INSTALL)
+	$(mkinstalldirs) $(DESTDIR)$(bindir)
+	@list='$(bin_PROGRAMS)'; for p in $$list; do    if test -f $$p; then      echo "  $(INSTALL_PROGRAM) $$p $(DESTDIR)$(bindir)/`echo $$p | sed '$(transform)'`";       $(INSTALL_PROGRAM) $$p $(DESTDIR)$(bindir)/`echo $$p | sed '$(transform)'`;    else :; fi;  done
+
+uninstall-binPROGRAMS:
+	$(NORMAL_UNINSTALL)
+	list='$(bin_PROGRAMS)'; for p in $$list; do    rm -f $(DESTDIR)$(bindir)/`echo $$p|sed '$(transform)'`.exe;  done
+
+.c.o:
+	$(COMPILE) -c $<
+
+clean-noinstLIBRARIES:
+	-test -z "$(noinst_LIBRARIES)" || rm -f $(noinst_LIBRARIES)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT) *$(EXEEXT) make.new core
+
+clean-compile:
+
+distclean-compile:
+	-rm -f *.tab.c *_tab.c
+
+maintainer-clean-compile:
+
+make$(EXEEXT): $(make_OBJECTS) $(make_DEPENDENCIES)
+	@command.com /c if exist make del make
+	@command.com /c if exist make.exe del make.exe
+	$(LINK) $(make_LDFLAGS) $(make_OBJECTS) $(make_LDADD) $(LIBS)
+
+# Documentation
+
+make.info: make.texi
+make.dvi: make.texi
+make.ps: make.dvi make.texi
+make.html: make.texi
+
+
+DVIPS = dvips
+
+.texi.info:
+	@command.com /c if exist make.info* del make.info*
+	@command.com /c if exist make.i* del make.i*
+	$(MAKEINFO) -I$(srcdir) --no-split $< -o ./$@
+
+.texi:
+	@command.com /c if exist make.info* del make.info*
+	@command.com /c if exist make.i* del make.i*
+	$(MAKEINFO) -I$(srcdir) --no-split $< -o ./$@
+
+.texi.dvi:
+	TEXINPUTS="$(srcdir);$$TEXINPUTS"    MAKEINFO='$(MAKEINFO) -I $(srcdir)' $(TEXI2DVI) $<
+
+.dvi.ps:
+	$(DVIPS) $< -o $@
+
+# Other documentation formats
+
+html: html-recursive
+
+.texi.html:
+	@command.com /c if exist make.html* del make.html*
+	$(MAKEINFO) --html -I$(srcdir) --no-split $< -o ./$@
+
+install-info-am: $(INFO_DEPS)
+	@$(NORMAL_INSTALL)
+	$(mkinstalldirs) $(DESTDIR)$(infodir)
+	@for file in $(INFO_DEPS); do    iifile=`echo $$file | sed "s|doc/||"`;    d=$(srcdir);    for ifile in `cd $$d && echo $$file`; do      if test -f $$d/$$ifile; then        echo " $(INSTALL_DATA) $$d/$$ifile $(DESTDIR)$(infodir)/$$iifile"; $(INSTALL_DATA) $$d/$$ifile $(DESTDIR)$(infodir)/$$iifile; else : ; fi;    done;  done
+	@$(POST_INSTALL)
+	@if $(SHELL) -c 'install-info --version | sed 1q | fgrep -s -v -i debian' >/dev/null 2>&1; then    for file in $(INFO_DEPS); do    iifile=`echo $$file | sed "s|doc/||"`;      echo " install-info --info-dir=$(DESTDIR)$(infodir) $(DESTDIR)$(infodir)/$$iifile";     install-info --info-dir=$(DESTDIR)$(infodir) $(DESTDIR)$(infodir)/$$iifile || :;   done;  else : ; fi
+
+uninstall-info:
+	$(PRE_UNINSTALL)
+	@if $(SHELL) -c 'install-info --version | sed 1q | fgrep -s -v -i debian' >/dev/null 2>&1; then    ii=yes;  else ii=; fi;  for file in $(INFO_DEPS); do    test -z $ii || install-info --info-dir=$(DESTDIR)$(infodir) --remove $$file;  done
+	$(NORMAL_UNINSTALL)
+	for file in $(INFO_DEPS); do (cd $(DESTDIR)$(infodir) && rm -f $$file);  done
+
+dist-info: $(INFO_DEPS)
+	for base in $(INFO_DEPS); do    d=$(srcdir);    for file in `cd $$d && eval echo $$base*`; do      test -f $(distdir)/$$file      || ln $$d/$$file $(distdir)/$$file 2> /dev/null      || cp -p $$d/$$file $(distdir)/$$file;    done;  done
+
+mostlyclean-aminfo:
+	-rm -f $(srcdir)/doc/make.aux $(srcdir)/doc/make.cp $(srcdir)/doc/make.cps $(srcdir)/doc/make.dvi \
+	  $(srcdir)/doc/make.fn $(srcdir)/doc/make.fns $(srcdir)/doc/make.ky $(srcdir)/doc/make.kys \
+	  $(srcdir)/doc/make.ps $(srcdir)/doc/make.log $(srcdir)/doc/make.pg $(srcdir)/doc/make.toc \
+	  $(srcdir)/doc/make.tp $(srcdir)/doc/make.tps $(srcdir)/doc/make.vr $(srcdir)/doc/make.vrs \
+	  $(srcdir)/doc/make.op $(srcdir)/doc/make.tr $(srcdir)/doc/make.cv $(srcdir)/doc/make.cn \
+	  $(srcdir)/doc/make.html
+
+clean-aminfo:
+
+distclean-aminfo:
+
+maintainer-clean-aminfo:
+	for i in $(INFO_DEPS); do rm -f $$i*; done
+
+install-man1:
+	$(mkinstalldirs) $(DESTDIR)$(man1dir)
+	@list='$(man1_MANS)'; \
+	l2='$(man_MANS)'; for i in $$l2; do \
+	  case "$$i" in \
+	    *.1*) list="$$list $$i" ;; \
+	  esac; \
+	done; \
+	for i in $$list; do \
+	  if test -f $(srcdir)/$$i; then file=$(srcdir)/$$i; \
+	  else file=$$i; fi; \
+	  ext=`echo $$i | sed -e 's/^.*\\.//'`; \
+	  inst=`echo $$i | sed -e 's/\\.[0-9a-z]*$$//'`; \
+	  inst=`echo $$inst | sed '$(transform)'`.$$ext; \
+	  echo " $(INSTALL_DATA) $$file $(DESTDIR)$(man1dir)/$$inst"; \
+	  $(INSTALL_DATA) $$file $(DESTDIR)$(man1dir)/$$inst; \
+	done
+
+uninstall-man1:
+	@list='$(man1_MANS)'; \
+	l2='$(man_MANS)'; for i in $$l2; do \
+	  case "$$i" in \
+	    *.1*) list="$$list $$i" ;; \
+	  esac; \
+	done; \
+	for i in $$list; do \
+	  ext=`echo $$i | sed -e 's/^.*\\.//'`; \
+	  inst=`echo $$i | sed -e 's/\\.[0-9a-z]*$$//'`; \
+	  inst=`echo $$inst | sed '$(transform)'`.$$ext; \
+	  echo " rm -f $(DESTDIR)$(man1dir)/$$inst"; \
+	  rm -f $(DESTDIR)$(man1dir)/$$inst; \
+	done
+install-man: $(MANS)
+	@$(NORMAL_INSTALL)
+	$(MAKE) install-man1
+uninstall-man:
+	@$(NORMAL_UNINSTALL)
+	$(MAKE) uninstall-man1
+
+# Assume that the only thing to do in glob is to build libglob.a,
+# but do a sanity check: if $SUBDIRS will ever have more than
+# a single directory, yell bloody murder.
+all-recursive:
+ifeq ($(findstring glob, $(SUBDIRS)), glob)
+	@command.com /c if not exist glob\\nul md glob
+	@echo Making all in glob
+	$(MAKE) -C glob -f ../Makefile INCLUDES='-I$(srcdir) -I$(srcdir)/glob' DEFS='-I.. -I$(srcdir)' VPATH=$(srcdir)/glob libglob.a
+endif
+
+$(SUBDIRS):
+	command.com /c md $@
+
+libglob.a: $(libglob_a_OBJECTS)
+	command.com /c if exist libglob.a del libglob.a
+	$(AR) cru libglob.a $(libglob_a_OBJECTS) $(libglob_a_LIBADD)
+	$(RANLIB) libglob.a
+
+mostlyclean-recursive clean-recursive distclean-recursive \
+maintainer-clean-recursive check-recursive:
+ifeq ($(words $(SUBDIRS)), 2)
+	@echo Making $(shell echo $@ | sed s/-recursive//) in glob
+	$(MAKE) -C glob -f ../Makefile $(shell echo $@ | sed s/-recursive//)-am
+	@echo Making $(shell echo $@ | sed s/-recursive//) in doc
+	$(MAKE) -C doc -f ../Makefile $(shell echo $@ | sed s/-recursive//)-am
+else
+	@echo FATAL: There is more than two directory in "($(SUBDIRS))"
+	@$(EXIT_FAIL)
+endif
+
+tags-in-glob: $(libglob_a_SOURCES)
+	etags $(addprefix $(srcdir)/,$^) -o ./glob/TAGS
+
+tags-recursive:
+ifeq ($(words $(SUBDIRS)), 2)
+	$(MAKE) tags-in-glob
+else
+	@echo FATAL: There is more than two directory in "($(SUBDIRS))"
+	@$(EXIT_FAIL)
+endif
+
+tags: TAGS
+
+ID: $(HEADERS) $(SOURCES)
+	mkid $(srcdir)/$(SOURCES) $(srcdir)/$(libglob_a_SOURCES) ./config.h $(HEADERS)
+
+TAGS: tags-recursive $(HEADERS) $(srcdir)/$(SOURCES) config.h $(TAGS_DEPENDENCIES)
+	etags -i ./glob/TAGS $(ETAGS_ARGS) $(srcdir)/$(SOURCES) ./config.h $(HEADERS)
+
+mostlyclean-tags:
+
+clean-tags:
+
+distclean-tags:
+	-rm -f TAGS ID
+
+maintainer-clean-tags:
+
+distdir = $(PACKAGE)-$(VERSION)
+top_distdir = $(distdir)
+
+# This target untars the dist file and tries a VPATH configuration.  Then
+# it guarantees that the distribution is self-contained by making another
+# tarfile.
+distcheck: dist
+	rm -rf $(distdir)
+	GZIP=$(GZIP) $(TAR) zxf $(distdir).tar.gz
+	mkdir $(distdir)/=build
+	mkdir $(distdir)/=inst
+	dc_install_base=`cd $(distdir)/=inst && pwd`;  cd $(distdir)/=build    && ../configure --srcdir=.. --prefix=$$dc_install_base    && $(MAKE)    && $(MAKE) dvi    && $(MAKE) check    && $(MAKE) install    && $(MAKE) installcheck    && $(MAKE) dist
+	rm -rf $(distdir)
+	@echo "========================";  echo "$(distdir).tar.gz is ready for distribution";  echo "========================"
+dist: distdir
+	-chmod -R a+r $(distdir)
+	GZIP=$(GZIP) $(TAR) chozf $(distdir).tar.gz $(distdir)
+	rm -rf $(distdir)
+dist-all: distdir
+	-chmod -R a+r $(distdir)
+	GZIP=$(GZIP) $(TAR) chozf $(distdir).tar.gz $(distdir)
+	rm -rf $(distdir)
+distdir: $(DISTFILES)
+	rm -rf $(distdir)
+	mkdir $(distdir)
+	-chmod 777 $(distdir)
+	@for file in $(DISTFILES); do d=$(srcdir); test -f $(distdir)/$$file || ln $$d/$$file $(distdir)/$$file 2> /dev/null || cp -p $$d/$$file $(distdir)/$$file; done; for subdir in $(SUBDIRS); do test -d $(distdir)/$$subdir || mkdir $(distdir)/$$subdir || exit 1; chmod 777 $(distdir)/$$subdir; (cd $$subdir && $(MAKE) top_distdir=../$(top_distdir)/$$subdir distdir=../$(distdir)/$$subdir distdir) || exit 1; done
+	$(MAKE) top_distdir="$(top_distdir)" distdir="$(distdir)" dist-info
+	$(MAKE) top_distdir="$(top_distdir)" distdir="$(distdir)" dist-hook
+
+info: info-recursive
+info-recursive:
+ifeq ($(findstring doc, $(SUBDIRS)), doc)
+	@command.com /c if not exist doc\\nul md doc
+	@echo Making all in doc
+	$(MAKE) -C doc -f ../Makefile VPATH=$(srcdir)/doc make.info
+endif
+
+dvi: dvi-recursive
+dvi-recursive:
+ifeq ($(findstring doc, $(SUBDIRS)), doc)
+	@command.com /c if not exist doc\\nul md doc
+	@echo Making all in doc
+	$(MAKE) -C doc -f ../Makefile VPATH=$(srcdir)/doc make.dvi
+endif
+
+ps: ps-recursive
+ps-recursive:
+ifeq ($(findstring doc, $(SUBDIRS)), doc)
+	@command.com /c if not exist doc\\nul md doc
+	@echo Making all in doc
+	$(MAKE) -C doc -f ../Makefile VPATH=$(srcdir)/doc make.ps
+endif
+
+html-recursive:
+ifeq ($(findstring doc, $(SUBDIRS)), doc)
+	@command.com /c if not exist doc\\nul md doc
+	@echo Making all in doc
+	$(MAKE) -C doc -f ../Makefile VPATH=$(srcdir)/doc make.html
+endif
+
+check: all-am check-recursive check-local
+	@:
+installcheck: installcheck-recursive
+all-recursive-am: config.h
+	$(MAKE) all-recursive
+
+all-am: Makefile $(PROGRAMS) config.h info
+
+install-exec-am: install-binPROGRAMS
+
+install-data-am: install-info-am
+
+uninstall-am: uninstall-binPROGRAMS uninstall-info
+
+install-exec: install-exec-recursive install-exec-am
+	@$(NORMAL_INSTALL)
+
+install-data: install-data-recursive install-data-am
+	@$(NORMAL_INSTALL)
+
+install-recursive uninstall-recursive:
+	@:
+
+install: install-recursive install-exec-am install-data-am
+	@:
+
+uninstall: uninstall-recursive uninstall-am
+
+all: all-recursive-am all-am
+
+install-strip:
+	$(MAKE) INSTALL_PROGRAM='$(INSTALL_PROGRAM) -s' INSTALL_SCRIPT='$(INSTALL_PROGRAM)' install
+installdirs: installdirs-recursive
+	$(mkinstalldirs)  $(bindir) $(infodir)
+
+
+mostlyclean-generic:
+	-test -z "$(MOSTLYCLEANFILES)" || rm -f $(MOSTLYCLEANFILES)
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-rm -f Makefile $(DISTCLEANFILES)
+	-rm -f config.cache config.log stamp-h stamp-h[0-9]*
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+
+maintainer-clean-generic:
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+	-test -z "$(BUILT_SOURCES)" || rm -f $(BUILT_SOURCES)
+mostlyclean-am:  mostlyclean-hdr mostlyclean-binPROGRAMS  mostlyclean-compile mostlyclean-aminfo mostlyclean-tags  mostlyclean-generic
+
+clean-am:  clean-hdr clean-binPROGRAMS clean-compile clean-aminfo  clean-tags clean-generic mostlyclean-am
+
+distclean-am:  distclean-hdr distclean-binPROGRAMS distclean-compile  distclean-aminfo distclean-tags distclean-generic  clean-am
+
+maintainer-clean-am:  maintainer-clean-hdr maintainer-clean-binPROGRAMS  maintainer-clean-compile maintainer-clean-aminfo  maintainer-clean-tags maintainer-clean-generic  distclean-am
+
+mostlyclean:  mostlyclean-recursive mostlyclean-am
+
+clean: clean-noinstLIBRARIES clean-recursive clean-am
+
+distclean:  distclean-recursive distclean-am
+	rm -f config.status
+
+maintainer-clean:  maintainer-clean-recursive maintainer-clean-am
+	@echo "This command is intended for maintainers to use;"
+	@echo "it deletes files that may require special tools to rebuild."
+	rm -f config.status
+
+.PHONY: default mostlyclean-hdr distclean-hdr clean-hdr \
+maintainer-clean-hdr mostlyclean-binPROGRAMS distclean-binPROGRAMS \
+clean-binPROGRAMS maintainer-clean-binPROGRAMS uninstall-binPROGRAMS \
+install-binPROGRAMS mostlyclean-compile distclean-compile clean-compile \
+maintainer-clean-compile install-info-am uninstall-info \
+mostlyclean-aminfo distclean-aminfo clean-aminfo \
+maintainer-clean-aminfo install-data-recursive uninstall-data-recursive \
+install-exec-recursive uninstall-exec-recursive installdirs-recursive \
+uninstalldirs-recursive all-recursive check-recursive check-am \
+installcheck-recursive info-recursive dvi-recursive \
+mostlyclean-recursive distclean-recursive clean-recursive \
+maintainer-clean-recursive tags tags-recursive mostlyclean-tags \
+distclean-tags clean-tags maintainer-clean-tags distdir \
+mostlyclean-depend distclean-depend clean-depend \
+maintainer-clean-depend info dvi check-local installcheck \
+all-recursive-am all-am install-exec-am install-data-am uninstall-am \
+install-exec install-data install uninstall all installdirs \
+mostlyclean-generic distclean-generic clean-generic \
+maintainer-clean-generic clean mostlyclean distclean maintainer-clean \
+html
+
+
+# --------------- Local DIST Section
+
+# Install the w32 subdirectory
+#
+dist-hook:
+	(cd $(srcdir); \
+	 w32=`find w32 -follow \( -name .git -prune \) -o -type f -print`; \
+	 tar chf - $$w32) \
+	| (cd $(distdir); tar xfBp -)
+
+# --------------- Local CHECK Section
+
+# Note: check-loadavg is NOT a prerequisite of check-local, since
+# there's no uptime utility, and the test it does doesn't make sense
+# on MSDOS anyway.
+check-local: check-shell check-regression
+	@banner=" Regression PASSED: GNU Make $(VERSION) ($(MAKE_HOST)) built with $(CC) "; \
+	dashes=`echo "$$banner" | sed s/./=/g`; \
+	echo; \
+	echo "$$dashes"; \
+	echo "$$banner"; \
+	echo "$$dashes"; \
+	echo
+
+.PHONY: check-loadavg check-shell check-regression
+
+# > check-shell
+#
+# check-shell is designed to fail if they don't have a Unixy shell
+# installed.  The test suite requires such a shell.
+check-shell:
+	@echo If Make says Error -1, you do not have Unix-style shell installed
+	@foo=bar.exe :
+
+# > check-loadavg
+#
+loadavg: loadavg.c config.h
+	@rm -f loadavg
+	$(LINK) -DTEST $(make_LDFLAGS) loadavg.c $(LIBS)
+# We copy getloadavg.c into a different file rather than compiling it
+# directly because some compilers clobber getloadavg.o in the process.
+loadavg.c: getloadavg.c
+	ln $(srcdir)/getloadavg.c loadavg.c || \
+	cp $(srcdir)/getloadavg.c loadavg.c
+check-loadavg: loadavg
+	@echo The system uptime program believes the load average to be:
+	-uptime
+	@echo The GNU load average checking code believes:
+	-./loadavg
+
+# > check-regression
+#
+# Look for the make test suite, and run it if found.  Look in MAKE_TEST if
+# specified, or else in the srcdir or the distdir, their parents, and _their_
+# parents.
+#
+check-regression:
+	@if test -f "$(srcdir)/tests/run_make_tests"; then \
+	  if $(PERL) -v >/dev/null 2>&1; then \
+	    case `cd $(srcdir); pwd` in `pwd`) : ;; \
+	      *) test -d tests || mkdir tests; \
+		 for f in run_make_tests run_make_tests.pl test_driver.pl scripts; do \
+		   rm -rf tests/$$f; cp -pr $(srcdir)/tests/$$f tests; \
+		 done ;; \
+	    esac; \
+	    echo "cd tests && $(PERL) ./run_make_tests.pl -make ../make.exe $(MAKETESTFLAGS)"; \
+	    cd tests && $(PERL) ./run_make_tests.pl -make ../make.exe $(MAKETESTFLAGS); \
+	  else \
+	    echo "Can't find a working Perl ($(PERL)); the test suite requires Perl."; \
+	  fi; \
+	 else \
+	  echo "Can't find the GNU Make test suite ($(srcdir)/tests)."; \
+	 fi
+
+# --------------- Maintainer's Section
+
+# Note this requires GNU make.  Not to worry, since it will only be included
+# in the Makefile if we're in the maintainer's environment.
+#include $(srcdir)/maintMakefile
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
+
+# --------------- DEPENDENCIES
diff --git a/src/kmk/Makefile.am b/src/kmk/Makefile.am
new file mode 100644
index 0000000..12cc103
--- /dev/null
+++ b/src/kmk/Makefile.am
@@ -0,0 +1,333 @@
+# This is a -*-Makefile-*-, or close enough
+#
+# Copyright (C) 1997-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+AUTOMAKE_OPTIONS = dist-bzip2 silent-rules std-options
+ACLOCAL_AMFLAGS = -I config
+
+MAKE_HOST =	@MAKE_HOST@
+
+# Only process if target is MS-Windows
+if WINDOWSENV
+  MAYBE_W32 =	w32
+  W32INC =	-I $(top_srcdir)/w32/include
+  W32LIB =	-Lw32 -lw32
+  ossrc =
+else
+  ossrc =	posixos.c
+endif
+
+# we can safely drop doc and po when bootstrapping kmk.
+# SUBDIRS =	glob config po doc $(MAYBE_W32)
+SUBDIRS =	glob config $(MAYBE_W32)
+
+bin_PROGRAMS =	kmk kmk_redirect
+include_HEADERS = gnumake.h
+
+if USE_CUSTOMS
+  remote =	remote-cstms.c
+else
+  remote =	remote-stub.c
+endif
+
+kmk_SOURCES =	ar.c arscan.c commands.c default.c dir.c expand.c file.c \
+		function.c getopt.c getopt1.c guile.c implicit.c job.c load.c \
+		loadapi.c main.c misc.c $(ossrc) output.c read.c remake.c \
+		rule.c signame.c strcache.c variable.c version.c vpath.c \
+		hash.c $(remote) \
+		\
+		expreval.c \
+		incdep.c \
+		strcache2.c \
+		alloccache.c \
+		kbuild.c \
+		kbuild-object.c \
+		electric.c \
+		../lib/md5.c \
+		../lib/kDep.c \
+		../lib/kbuild_version.c \
+		../lib/dos2unix.c \
+		../lib/maybe_con_fwrite.c \
+		../lib/version_compare.c \
+		\
+		kmkbuiltin.c \
+		kmkbuiltin/append.c \
+		kmkbuiltin/cat.c \
+		kmkbuiltin/chmod.c \
+		kmkbuiltin/cmp.c \
+		kmkbuiltin/cmp_util.c \
+		kmkbuiltin/cp.c \
+		kmkbuiltin/cp_utils.c \
+		kmkbuiltin/echo.c \
+		kmkbuiltin/expr.c \
+		kmkbuiltin/install.c \
+		kmkbuiltin/kDepIDB.c \
+		kmkbuiltin/kDepObj.c \
+		kmkbuiltin/ln.c \
+		kmkbuiltin/md5sum.c \
+		kmkbuiltin/mkdir.c \
+		kmkbuiltin/mv.c \
+		kmkbuiltin/printf.c \
+		kmkbuiltin/redirect.c \
+		kmkbuiltin/rm.c \
+		kmkbuiltin/rmdir.c \
+		kmkbuiltin/sleep.c \
+		kmkbuiltin/test.c \
+		kmkbuiltin/touch.c \
+               \
+		kmkbuiltin/err.c \
+		kmkbuiltin/getopt_r.c \
+		kmkbuiltin/getopt1_r.c \
+		kmkbuiltin/fts.c \
+		kmkbuiltin/setmode.c \
+		kmkbuiltin/strmode.c \
+		kmkbuiltin/strlcpy.c \
+		kmkbuiltin/osdep.c \
+		kmkbuiltin/kbuild_protection.c \
+		kmkbuiltin/common-env-and-cwd-opt.c
+
+kmk_redirect_SOURCES = kmkbuiltin/redirect.c \
+		kmkbuiltin/common-env-and-cwd-opt.c \
+		kmkbuiltin/err.c \
+		../lib/kbuild_version.c
+kmk_redirect_CFLAGS = -UKMK -DKMK_BUILTIN_STANDALONE
+
+EXTRA_kmk_SOURCES = vmsjobs.c remote-stub.c remote-cstms.c
+
+noinst_HEADERS = commands.h dep.h filedef.h job.h makeint.h rule.h variable.h \
+		debug.h getopt.h gettext.h hash.h output.h os.h
+
+#kmk_LDADD =	@LIBOBJS@ @ALLOCA@ $(GLOBLIB) @GETLOADAVG_LIBS@ @LIBINTL@
+kmk_LDADD =	@LIBOBJS@ @ALLOCA@ $(GLOBLIB) @GETLOADAVG_LIBS@ \
+		$(GUILE_LIBS)
+# Only process if target is MS-Windows
+if WINDOWSENV
+    kmk_LDADD += $(W32LIB)
+endif
+
+man_MANS =	make.1
+
+# org - DEFS =		-DLOCALEDIR=\"$(localedir)\" -DLIBDIR=\"$(libdir)\" -DINCLUDEDIR=\"$(includedir)\" @DEFS@
+DEFS = \
+	-DNO_ARCHIVES \
+	-DEXPERIMENTAL \
+	-DCONFIG_WITH_TOUPPER_TOLOWER \
+	-DCONFIG_WITH_DEFINED \
+	-DCONFIG_WITH_EXPLICIT_MULTITARGET \
+	-DCONFIG_WITH_DOT_MUST_MAKE \
+	-DCONFIG_WITH_PREPEND_ASSIGNMENT \
+	-DCONFIG_WITH_LOCAL_VARIABLES \
+	-DCONFIG_WITH_2ND_TARGET_EXPANSION \
+	-DCONFIG_WITH_ALLOC_CACHES \
+	-DCONFIG_WITH_STRCACHE2 \
+	\
+	-DKMK \
+	-DKMK_HELPERS \
+	-DCONFIG_NO_DEFAULT_SUFFIXES \
+	-DCONFIG_NO_DEFAULT_PATTERN_RULES	\
+	-DCONFIG_NO_DEFAULT_TERMINAL_RULES \
+	-DCONFIG_NO_DEFAULT_SUFFIX_RULES \
+	-DCONFIG_NO_DEFAULT_VARIABLES \
+	-DCONFIG_WITH_EXTENDED_NOTPARALLEL \
+	-DCONFIG_WITH_INCLUDEDEP \
+	-DCONFIG_WITHOUT_THREADS \
+	-DCONFIG_WITH_VALUE_LENGTH \
+	\
+	-DCONFIG_WITH_ABSPATHEX \
+	-DCONFIG_WITH_COMMANDS_FUNC \
+	-DCONFIG_WITH_DATE \
+	-DCONFIG_WITH_DEFINED_FUNCTIONS \
+	-DCONFIG_WITH_EVALPLUS \
+	-DCONFIG_WITH_FILE_SIZE \
+	-DCONFIG_WITH_LOOP_FUNCTIONS \
+	-DCONFIG_WITH_MATH \
+	-DCONFIG_WITH_NANOTS \
+	-DCONFIG_WITH_ROOT_FUNC \
+	-DCONFIG_WITH_RSORT \
+	-DCONFIG_WITH_STACK \
+	-DCONFIG_WITH_STRING_FUNCTIONS \
+	-DCONFIG_WITH_WHERE_FUNCTION \
+	-DCONFIG_WITH_WHICH \
+	-DCONFIG_WITH_XARGS \
+	\
+	-DCONFIG_WITH_COMPARE \
+	-DCONFIG_WITH_SET_CONDITIONALS \
+	-DCONFIG_WITH_IF_CONDITIONALS \
+	-DCONFIG_WITH_PRINTF \
+	-DCONFIG_WITH_MINIMAL_STATS \
+	-DCONFIG_PRETTY_COMMAND_PRINTING \
+	-DCONFIG_WITH_PRINT_STATS_SWITCH \
+	-DCONFIG_WITH_PRINT_TIME_SWITCH \
+	-DCONFIG_WITH_RDONLY_VARIABLE_VALUE \
+	-DCONFIG_WITH_LAZY_DEPS_VARS \
+	\
+	-DKBUILD_TYPE=\"$(KBUILD_TYPE)\" \
+	-DKBUILD_HOST=\"$(KBUILD_TARGET)\" \
+	-DKBUILD_HOST_ARCH=\"$(KBUILD_TARGET_ARCH)\" \
+	-DKBUILD_HOST_CPU=\"$(KBUILD_TARGET_CPU)\" \
+	\
+	-DKBUILD_SVN_REV=1 \
+	-DKBUILD_VERSION_MAJOR=0 \
+	-DKBUILD_VERSION_MINOR=1 \
+	-DKBUILD_VERSION_PATCH=9998 \
+	\
+	-DCONFIG_WITH_KMK_BUILTIN \
+    @DEFS@
+
+AM_CPPFLAGS =	$(GLOBINC) -I$(srcdir)/../lib -I$(srcdir)/../lib/kStuff/include
+AM_CFLAGS =	$(GUILE_CFLAGS)
+# Only process if target is MS-Windows
+if WINDOWSENV
+    AM_CPPFLAGS +=	$(W32INC)
+endif
+
+
+# Extra stuff to include in the distribution.
+
+EXTRA_DIST =	ChangeLog README build.sh.in $(man_MANS) \
+		README.customs README.OS2 \
+		SCOPTIONS SMakefile \
+		README.Amiga Makefile.ami config.ami make.lnk amiga.c amiga.h \
+		README.DOS Makefile.DOS configure.bat dosbuild.bat configh.dos\
+		README.W32 NMakefile config.h.W32 build_w32.bat subproc.bat \
+		make_msvc_net2003.sln make_msvc_net2003.vcproj \
+		README.VMS makefile.vms makefile.com config.h-vms \
+		vmsdir.h vmsfunctions.c vmsify.c vms_exit.c vms_progname.c \
+		vms_export_symbol.c vms_export_symbol_test.com \
+		gmk-default.scm gmk-default.h
+
+# This is built during configure, but behind configure's back
+
+DISTCLEANFILES = build.sh
+
+# --------------- Internationalization Section
+
+localedir =	$(datadir)/locale
+
+# --------------- Local INSTALL Section
+
+# If necessary, change the gid of the app and turn on the setgid flag.
+#
+
+# Whether or not make needs to be installed setgid.
+# The value should be either 'true' or 'false'.
+# On many systems, the getloadavg function (used to implement the '-l'
+# switch) will not work unless make is installed setgid kmem.
+#
+inst_setgid = @NEED_SETGID@
+
+# Install make setgid to this group so it can get the load average.
+#
+inst_group = @KMEM_GROUP@
+
+install-exec-local:
+	@if $(inst_setgid); then \
+	   app=$(DESTDIR)$(bindir)/`echo $(bin_PROGRAMS)|sed '$(transform)'`; \
+	   if chgrp $(inst_group) $$app && chmod g+s $$app; then \
+	     echo "chgrp $(inst_group) $$app && chmod g+s $$app"; \
+	   else \
+	     echo "$$app needs to be owned by group $(inst_group) and setgid;"; \
+	     echo "otherwise the '-l' option will probably not work."; \
+	     echo "You may need special privileges to complete the installation"; \
+	     echo "of $$app."; \
+	   fi; \
+	 else true; fi
+
+# --------------- Generate the Guile default module content
+
+guile.$(OBJEXT): gmk-default.h
+gmk-default.h: $(srcdir)/gmk-default.scm
+	(echo 'static const char *const GUILE_module_defn = " '\\ \
+	  && sed -e 's/;.*//' -e '/^[ \t]*$$/d' -e 's/"/\\"/g' -e 's/$$/ \\/' \
+		 $(srcdir)/gmk-default.scm \
+	  && echo '";') > $@
+
+# --------------- Local DIST Section
+
+# Install the w32 and tests subdirectories
+#
+dist-hook:
+	(cd $(srcdir); \
+	 sub=`find w32 tests -follow \( -name .git -o -name .deps -o -name work -o -name .gitignore -o -name \*.orig -o -name \*.rej -o -name \*~ -o -name Makefile \) -prune -o -type f -print`; \
+	 tar chf - $$sub) \
+	| (cd $(distdir); tar xfBp -)
+
+
+# --------------- Local CHECK Section
+
+check-local: check-regression check-loadavg
+	@banner=" Regression PASSED: GNU Make $(VERSION) ($(MAKE_HOST)) built with $(CC) "; \
+	dashes=`echo "$$banner" | sed s/./=/g`; \
+	echo; \
+	echo "$$dashes"; \
+	echo "$$banner"; \
+	echo "$$dashes"; \
+	echo
+
+.PHONY: check-loadavg check-regression
+
+check-loadavg: loadavg$(EXEEXT)
+	@echo The system uptime program believes the load average to be:
+	-uptime
+	@echo The GNU load average checking code thinks:
+	-./loadavg$(EXEEXT)
+
+# The loadavg function is invoked during "make check" to test getloadavg.
+check_PROGRAMS = loadavg
+nodist_loadavg_SOURCES = getloadavg.c
+loadavg_CPPFLAGS = -DTEST
+loadavg_LDADD = @GETLOADAVG_LIBS@
+
+# > check-regression
+#
+# Look for the make test suite, and run it if found and we can find perl.
+# If we're building outside the tree, we use symlinks to make a local copy of
+# the test suite.  Unfortunately the test suite itself isn't localizable yet.
+#
+MAKETESTFLAGS =
+
+check-regression: tests/config-flags.pm
+	@if test -f '$(srcdir)/tests/run_make_tests'; then \
+	  ulimit -n 128; \
+	  if $(PERL) -v >/dev/null 2>&1; then \
+	    case `cd '$(srcdir)'; pwd` in `pwd`) : ;; \
+	      *) test -d tests || mkdir tests; \
+		 rm -f srctests; \
+		 if ln -s '$(srcdir)/tests' srctests; then \
+		   for f in run_make_tests run_make_tests.pl test_driver.pl scripts; do \
+		     rm -f tests/$$f; ln -s ../srctests/$$f tests; \
+		   done; fi ;; \
+	    esac; \
+	    echo "cd tests && $(PERL) ./run_make_tests.pl -srcdir $(abs_srcdir) -make ../make$(EXEEXT) $(MAKETESTFLAGS)"; \
+	    cd tests && $(PERL) ./run_make_tests.pl -srcdir '$(abs_srcdir)' -make '../make$(EXEEXT)' $(MAKETESTFLAGS); \
+	  else \
+	    echo "Can't find a working Perl ($(PERL)); the test suite requires Perl."; \
+	  fi; \
+	else \
+	  echo "Can't find the GNU Make test suite ($(srcdir)/tests)."; \
+	fi
+
+
+# --------------- Maintainer's Section
+
+# Tell automake that I haven't forgotten about this file and it will be
+# created before we build a distribution (see maintMakefile in the Git
+# distribution).
+
+README:
+
+@MAINT_MAKEFILE@
diff --git a/src/kmk/Makefile.ami b/src/kmk/Makefile.ami
new file mode 100644
index 0000000..39a9788
--- /dev/null
+++ b/src/kmk/Makefile.ami
@@ -0,0 +1,308 @@
+# -*-Makefile-*- for GNU make on Amiga
+#
+# NOTE: If you have no 'make' program at all to process this makefile, run
+# 'build.sh' instead.
+#
+# Copyright (C) 1995-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#
+#	Makefile for GNU Make
+#
+
+CC = sc
+RM = delete
+
+CFLAGS =
+CPPFLAGS =
+LDFLAGS =
+
+# Define these for your system as follows:
+#	-DNO_ARCHIVES		To disable 'ar' archive support.
+#	-DNO_FLOAT		To avoid using floating-point numbers.
+#	-DENUM_BITFIELDS	If the compiler isn't GCC but groks enum foo:2.
+#				Some compilers apparently accept this
+#				without complaint but produce losing code,
+#				so beware.
+# NeXT 1.0a uses an old version of GCC, which required -D__inline=inline.
+# See also 'config.h'.
+defines =
+
+# Which flavor of remote job execution support to use.
+# The code is found in 'remote-$(REMOTE).c'.
+REMOTE = stub
+
+# If you are using the GNU C library, or have the GNU getopt functions in
+# your C library, you can comment these out.
+GETOPT = getopt.o getopt1.o
+GETOPT_SRC = $(srcdir)getopt.c $(srcdir)getopt1.c $(srcdir)getopt.h
+
+# If you are using the GNU C library, or have the GNU glob functions in
+# your C library, you can comment this out.  GNU make uses special hooks
+# into the glob functions to be more efficient (by using make's directory
+# cache for globbing), so you must use the GNU functions even if your
+# system's C library has the 1003.2 glob functions already.  Also, the glob
+# functions in the AIX and HPUX C libraries are said to be buggy.
+GLOB = glob/glob.lib
+
+# If your system doesn't have alloca, or the one provided is bad, define this.
+ALLOCA = alloca.o
+ALLOCA_SRC = $(srcdir)alloca.c
+
+# If your system needs extra libraries loaded in, define them here.
+# System V probably need -lPW for alloca.  HP-UX 7.0's alloca in
+# libPW.a is broken on HP9000s300 and HP9000s400 machines.  Use
+# alloca.c instead on those machines.
+LOADLIBES =
+
+# Any extra object files your system needs.
+extras = amiga.o
+
+# Common prefix for machine-independent installed files.
+prefix =
+# Common prefix for machine-dependent installed files.
+exec_prefix =
+
+# Directory to install 'make' in.
+bindir = sc:c
+# Directory to find libraries in for '-lXXX'.
+libdir = lib:
+# Directory to search by default for included makefiles.
+includedir = include:
+# Directory to install the Info files in.
+infodir = doc:
+# Directory to install the man page in.
+mandir = t:
+# Number to put on the man page filename.
+manext = 1
+# Prefix to put on installed 'make' binary file name.
+binprefix =
+# Prefix to put on installed 'make' man page file name.
+manprefix = $(binprefix)
+
+# Whether or not make needs to be installed setgid.
+# The value should be either 'true' or 'false'.
+# On many systems, the getloadavg function (used to implement the '-l'
+# switch) will not work unless make is installed setgid kmem.
+install_setgid = false
+# Install make setgid to this group so it can read /dev/kmem.
+group = sys
+
+# Program to install 'make'.
+INSTALL_PROGRAM = copy
+# Program to install the man page.
+INSTALL_DATA = copy
+# Generic install program.
+INSTALL = copy
+
+# Program to format Texinfo source into Info files.
+MAKEINFO = makeinfo
+# Program to format Texinfo source into DVI files.
+TEXI2DVI = texi2dvi
+
+# Programs to make tags files.
+ETAGS = etags -w
+CTAGS = ctags -w
+
+#guile = guile.o
+
+objs = commands.o job.o dir.o file.o misc.o main.o read.o remake.o   \
+       rule.o implicit.o default.o variable.o expand.o function.o    \
+       vpath.o version.o ar.o arscan.o signame.o strcache.o hash.o   \
+       remote-$(REMOTE).o $(GETOPT) $(ALLOCA) $(extras) $(guile)
+
+srcs = $(srcdir)commands.c $(srcdir)job.c $(srcdir)dir.c             \
+       $(srcdir)file.c $(srcdir)getloadavg.c $(srcdir)misc.c         \
+       $(srcdir)main.c $(srcdir)read.c $(srcdir)remake.c             \
+       $(srcdir)rule.c $(srcdir)implicit.c $(srcdir)default.c        \
+       $(srcdir)variable.c $(srcdir)expand.c $(srcdir)function.c     \
+       $(srcdir)vpath.c $(srcdir)version.c $(srcdir)hash.c           \
+       $(srcdir)guile.c $(srcdir)remote-$(REMOTE).c                  \
+       $(srcdir)ar.c $(srcdir)arscan.c $(srcdir)strcache.c           \
+       $(srcdir)signame.c $(srcdir)signame.h $(GETOPT_SRC)           \
+       $(srcdir)commands.h $(srcdir)dep.h $(srcdir)filedep.h         \
+       $(srcdir)job.h $(srcdir)makeint.h $(srcdir)rule.h             \
+       $(srcdir)variable.h $(ALLOCA_SRC) $(srcdir)config.h.in
+
+
+.SUFFIXES:
+.SUFFIXES: .o .c .h .ps .dvi .info .texinfo
+
+all: make
+info: make.info
+dvi: make.dvi
+# Some makes apparently use .PHONY as the default goal if it is before 'all'.
+.PHONY: all check info dvi
+
+make.info: make.texinfo
+	$(MAKEINFO) -I$(srcdir) $(srcdir)make.texinfo -o make.info
+
+make.dvi: make.texinfo
+	$(TEXI2DVI) $(srcdir)make.texinfo
+
+make.ps: make.dvi
+	dvi2ps make.dvi > make.ps
+
+make: $(objs) $(GLOB)
+	$(CC) Link $(LDFLAGS) $(objs) Lib $(GLOB) $(LOADLIBES) To make.new
+	-delete make
+	rename make.new make
+
+TMPFILE = t:Make$$
+
+$(GLOB):
+	cd glob @@\
+	$(MAKE) -$(MAKEFLAGS) -f Makefile
+
+# -I. is needed to find config.h in the build directory.
+OUTPUT_OPTION =
+.c.o:
+	$(CC) $(defines) IDir "" IDir glob \
+	      $(CPPFLAGS) $(CFLAGS) $< $(OUTPUT_OPTION)
+
+# For some losing Unix makes.
+SHELL = /bin/sh
+#@SET_MAKE@
+
+glob/libglob.a: FORCE config.h
+	cd glob; $(MAKE) libglob.a
+FORCE:
+
+.PHONY: install installdirs
+install: installdirs \
+	 $(bindir)$(binprefix)make $(infodir)make.info \
+	 $(mandir)$(manprefix)make.$(manext)
+
+installdirs:
+	$(SHELL) ${srcdir}/mkinstalldirs $(bindir) $(infodir) $(mandir)
+
+$(bindir)$(binprefix)make: make
+	$(INSTALL_PROGRAM) make $@.new
+	@if $(install_setgid); then \
+	   if chgrp $(group) $@.new && chmod g+s $@.new; then \
+	     echo "chgrp $(group) $@.new && chmod g+s $@.new"; \
+	   else \
+	     echo "$@ needs to be owned by group $(group) and setgid;"; \
+	     echo "otherwise the '-l' option will probably not work."; \
+	     echo "You may need special privileges to install $@."; \
+	   fi; \
+	 else true; fi
+# Some systems can't deal with renaming onto a running binary.
+	-$(RM) $@.old
+	-mv $@ $@.old
+	mv $@.new $@
+
+$(infodir)make.info: make.info
+	if [ -r ./make.info ]; then dir=.; else dir=$(srcdir); fi; \
+	for file in $${dir}/make.info*; do \
+	  name="`basename $$file`"; \
+	  $(INSTALL_DATA) $$file \
+	    `echo $@ | sed "s,make.info\$$,$$name,"`; \
+	done
+# Run install-info only if it exists.
+# Use 'if' instead of just prepending '-' to the
+# line so we notice real errors from install-info.
+# We use '$(SHELL) -c' because some shells do not
+# fail gracefully when there is an unknown command.
+	if $(SHELL) -c 'install-info --version' >/dev/null 2>&1; then \
+	  if [ -r ./make.info ]; then dir=.; else dir=$(srcdir); fi; \
+	  install-info --infodir=$(infodir) $$dir/make.info; \
+	else true; fi
+
+$(mandir)$(manprefix)make.$(manext): make.man
+	$(INSTALL_DATA) $(srcdir)make.man $@
+
+
+loadavg: loadavg.c config.h
+	$(CC) $(defines) -DTEST -I. -I$(srcdir) $(CFLAGS) $(LDFLAGS) \
+	      loadavg.c $(LOADLIBES) -o $@
+# We copy getloadavg.c into a different file rather than compiling it
+# directly because some compilers clobber getloadavg.o in the process.
+loadavg.c: getloadavg.c
+	ln $(srcdir)getloadavg.c loadavg.c || \
+	cp $(srcdir)getloadavg.c loadavg.c
+check-loadavg: loadavg
+	@echo The system uptime program believes the load average to be:
+	-uptime
+	@echo The GNU load average checking code believes:
+	./loadavg
+check: check-loadavg
+
+
+.PHONY: clean realclean distclean mostlyclean
+clean: glob-clean
+	-$(RM) make loadavg "#?.o" core make.dvi
+
+distclean: clean glob-realclean
+	-$(RM) Makefile config.h config.status build.sh
+	-$(RM) config.log config.cache
+	-$(RM) TAGS tags
+	-$(RM) make.?? make.??s make.log make.toc make.*aux
+	-$(RM) loadavg.c
+
+realclean: distclean
+	-$(RM) make.info*
+mostlyclean: clean
+
+.PHONY: glob-clean glob-realclean
+glob-clean glob-realclean:
+	cd glob @@\
+	$(MAKE) $@
+
+# This tells versions [3.59,3.63) of GNU make not to export all variables.
+.NOEXPORT:
+
+# The automatically generated dependencies below may omit config.h
+# because it is included with '#include <config.h>' rather than
+# '#include "config.h"'.  So we add the explicit dependency to make sure.
+$(objs): config.h
+
+# Automatically generated dependencies will be put at the end of the file.
+
+# Automatically generated dependencies.
+commands.o: commands.c makeint.h dep.h filedef.h variable.h job.h \
+ commands.h
+job.o: job.c makeint.h job.h filedef.h commands.h variable.h
+dir.o: dir.c makeint.h
+file.o: file.c makeint.h dep.h filedef.h job.h commands.h variable.h
+misc.o: misc.c makeint.h dep.h
+main.o: main.c makeint.h dep.h filedef.h variable.h job.h commands.h \
+ getopt.h
+guile.o: guile.c makeint.h dep.h debug.h variable.h gmk-default.h
+read.o: read.c makeint.h dep.h filedef.h job.h commands.h variable.h \
+ glob/glob.h
+remake.o: remake.c makeint.h filedef.h job.h commands.h dep.h
+rule.o: rule.c makeint.h dep.h filedef.h job.h commands.h variable.h \
+ rule.h
+implicit.o: implicit.c makeint.h rule.h dep.h filedef.h
+default.o: default.c makeint.h rule.h dep.h filedef.h job.h commands.h \
+ variable.h
+variable.o: variable.c makeint.h dep.h filedef.h job.h commands.h \
+ variable.h
+expand.o: expand.c makeint.h filedef.h job.h commands.h variable.h
+function.o: function.c makeint.h filedef.h variable.h dep.h job.h \
+ commands.h amiga.h
+vpath.o: vpath.c makeint.h filedef.h variable.h
+strcache.o: strcache.c makeint.h hash.h
+version.o: version.c
+ar.o: ar.c makeint.h filedef.h dep.h
+arscan.o: arscan.c makeint.h
+signame.o: signame.c signame.h
+remote-stub.o: remote-stub.c makeint.h filedef.h job.h commands.h
+getopt.o: getopt.c
+getopt1.o : getopt1.c getopt.h
+getloadavg.o: getloadavg.c
+amiga.o: amiga.c makeint.h variable.h amiga.h
diff --git a/src/kmk/Makefile.kmk b/src/kmk/Makefile.kmk
new file mode 100644
index 0000000..ff93ae5
--- /dev/null
+++ b/src/kmk/Makefile.kmk
@@ -0,0 +1,770 @@
+# $Id: Makefile.kmk 3572 2022-10-24 08:36:35Z bird $
+## @file
+# Sub-makefile for kmk / GNU Make.
+#
+
+#
+# Copyright (c) 2004-2011 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ../..
+include $(KBUILD_PATH)/subheader.kmk
+
+# Enable new children handling for windows.
+CONFIG_NEW_WIN_CHILDREN = 1
+
+#
+# Template for kmk and the kmk_* binaries in this makefile.
+#
+TEMPLATE_BIN-KMK = Template for src/gmake binaries
+TEMPLATE_BIN-KMK_EXTENDS = BIN-THREADED
+TEMPLATE_BIN-KMK_DEFS = \
+	HAVE_CONFIG_H \
+	$(TEMPLATE_BIN_DEFS) \
+	KBUILD_SVN_REV=$(KBUILD_SVN_REV) \
+	KBUILD_TYPE=$(TMP_QUOTE_SLASH)"$(KBUILD_TYPE)$(TMP_QUOTE_SLASH)"
+TEMPLATE_BIN-KMK_DEPS = \
+	$(kmk_0_OUTDIR)/config.h \
+	$(kmk_0_OUTDIR)/fts.h
+TEMPLATE_BIN-KMK_CLEAN = $(TEMPLATE_BIN-KMK_DEPS)
+TEMPLATE_BIN-KMK_DEPS.solaris = \
+	$(kmk_0_OUTDIR)/paths.h
+TEMPLATE_BIN-KMK_CLEAN.solaris = $(TEMPLATE_BIN-KMK_DEPS.solaris)
+TEMPLATE_BIN-KMK_DEPS.win     = \
+	$(kmk_0_OUTDIR)/sysexits.h \
+	$(kmk_0_OUTDIR)/unistd.h \
+	$(kmk_0_OUTDIR)/paths.h \
+	$(kmk_0_OUTDIR)/grp.h \
+	$(kmk_0_OUTDIR)/pwd.h \
+	$(kmk_0_OUTDIR)/inttypes.h
+TEMPLATE_BIN-KMK_CFLAGS.win.amd64 = $(TEMPLATE_BIN-THREADED_CFLAGS.win.amd64) -wd4244 -wd4267
+TEMPLATE_BIN-KMK_CLEAN.win = $(TEMPLATE_BIN-KMK_DEPS.win)
+TEMPLATE_BIN-KMK_DEFS.debug = $(TEMPLATE_BIN_DEFS.debug) MAKE_MAINTAINER_MODE
+TEMPLATE_BIN-KMK_INCS = $(kmk_0_OUTDIR) . $(TEMPLATE_BIN-THREADED_INCS)
+ifneq ($(KBUILD_TARGET),os2)
+ TEMPLATE_BIN-KMK_INCS += glob
+endif
+TEMPLATE_BIN-KMK_LIBS       = $(LIB_KUTIL) $(TEMPLATE_BIN-THREADED_LIBS) $(kmkmissing_1_TARGET) $(LIB_KUTIL)
+TEMPLATE_BIN-KMK_LIBS.x86   = $(LIB_KUTIL) $(TEMPLATE_BIN-THREADED_LIBS.x86)
+TEMPLATE_BIN-KMK_LIBS.amd64 = $(LIB_KUTIL) $(TEMPLATE_BIN-THREADED_LIBS.amd64)
+ifdef ELECTRIC_HEAP # for electric heap (see electric.c).
+ifeq ($(KBUILD_TARGET),win)
+ TEMPLATE_BIN-KMK_CFLAGS = $(TEMPLATE_BIN-THREADED_CFLAGS) /FI$(kmk_DEFPATH)/electric.h -DELECTRIC_HEAP=1
+else
+ TEMPLATE_BIN-KMK_CFLAGS = $(TEMPLATE_BIN-THREADED_CFLAGS) -include $(kmk_DEFPATH)/electric.h -DELECTRIC_HEAP=1
+endif
+endif
+ifdef CONFIG_WITH_ALLOCCACHE_DEBUG
+ TEMPLATE_BIN-KMK_DEFS += CONFIG_WITH_ALLOCCACHE_DEBUG
+endif
+ifdef CONFIG_NEW_WIN_CHILDREN
+ TEMPLATE_BIN-KMK_DEFS.win = $(TEMPLATE_BIN_DEFS.win) CONFIG_NEW_WIN_CHILDREN
+endif
+# GCC sanitizers.
+ifdef GCC_SANITIZERS
+ TEMPLATE_BIN-KMK_CFLAGS  ?= $(TEMPLATE_BIN-THREADED_CFLAGS)
+# TEMPLATE_BIN-KMK_CFLAGS  += -fsanitize=address -fsanitize=undefined -static-libubsan -D GCC_ADDRESS_SANITIZER
+ TEMPLATE_BIN-KMK_CFLAGS  += -fsanitize=address -fsanitize=undefined -D GCC_ADDRESS_SANITIZER
+ TEMPLATE_BIN-KMK_LDFLAGS ?= $(TEMPLATE_BIN-THREADED_LDFLAGS)
+ TEMPLATE_BIN-KMK_LDFLAGS += -fsanitize=address -fsanitize=undefined
+endif
+
+#
+# Library version of the above.
+#
+TEMPLATE_LIB-KMK = Template for src/gmake libraries
+TEMPLATE_LIB-KMK_EXTENDS = BIN-KMK
+TEMPLATE_LIB-KMK_POST_CMDS.win = $(NO_SUCH_VARIABLE)
+
+#
+# Template for building standalone built-in utilities.
+#
+TEMPLATE_BIN-KMK-BUILTIN = Template for standalone built-in utilies.
+TEMPLATE_BIN-KMK-BUILTIN_EXTENDS = BIN-KMK
+TEMPLATE_BIN-KMK-BUILTIN_EXTENDS_BY = appending
+TEMPLATE_BIN-KMK-BUILTIN_DEFS += KMK_BUILTIN_STANDALONE
+TEMPLATE_BIN-KMK-BUILTIN_SOURCES += kmkbuiltin/err.c
+
+#
+# A library containing the missing features needed by kmk and the
+# kmk_* binaries. Saves a bit of work later on.
+#
+LIBRARIES += kmkmissing
+kmkmissing_TEMPLATE = LIB-KMK
+kmkmissing_DEFS = KMK
+kmkmissing_NOINST = 1
+kmkmissing_SOURCES = \
+	kmkbuiltin/fts.c \
+	kmkbuiltin/setmode.c \
+	kmkbuiltin/strmode.c \
+	kmkbuiltin/kbuild_protection.c \
+	kmkbuiltin/common-env-and-cwd-opt.c \
+	kmkbuiltin/getopt_r.c \
+	kmkbuiltin/getopt1_r.c \
+	getopt.c \
+	getopt1.c \
+	electric.c
+ifneq ($(KBUILD_TARGET),os2)
+kmkmissing_SOURCES += \
+	glob/glob.c
+endif
+
+kmkmissing_SOURCES.darwin = \
+	kmkbuiltin/darwin.c \
+	glob/fnmatch.c
+
+kmkmissing_SOURCES.dragonfly = \
+	glob/fnmatch.c
+
+kmkmissing_SOURCES.freebsd = \
+	glob/fnmatch.c
+
+kmkmissing_SOURCES.gnuhurd += \
+	kmkbuiltin/strlcpy.c
+
+kmkmissing_SOURCES.gnukfbsd += \
+	kmkbuiltin/strlcpy.c
+
+kmkmissing_SOURCES.gnuknbsd += \
+	kmkbuiltin/strlcpy.c
+
+kmkmissing_SOURCES.haiku = \
+	kmkbuiltin/haikufakes.c \
+	glob/fnmatch.c
+
+kmkmissing_SOURCES.linux += \
+	kmkbuiltin/strlcpy.c
+
+kmkmissing_SOURCES.netbsd = \
+	glob/fnmatch.c
+
+kmkmissing_SOURCES.openbsd = \
+	kmkbuiltin/openbsd.c
+
+kmkmissing_SOURCES.solaris = \
+	kmkbuiltin/strlcpy.c \
+	kmkbuiltin/solfakes.c \
+	glob/fnmatch.c
+
+kmkmissing_SOURCES.win += \
+	kmkbuiltin/strlcpy.c \
+	kmkbuiltin/mscfakes.c \
+	glob/fnmatch.c \
+	getloadavg.c \
+	w32/subproc/misc.c \
+	w32/subproc/w32err.c \
+	w32/pathstuff.c \
+	w32/imagecache.c \
+ 	w32/compat/posixfcn.c
+
+#
+# kmk
+#
+PROGRAMS += kmk
+
+kmk_TEMPLATE = BIN-KMK
+
+kmk_DEFS = \
+	NO_ARCHIVES \
+	EXPERIMENTAL \
+	CONFIG_WITH_TOUPPER_TOLOWER \
+	CONFIG_WITH_DEFINED \
+	CONFIG_WITH_EXPLICIT_MULTITARGET \
+	CONFIG_WITH_DOT_MUST_MAKE \
+	CONFIG_WITH_PREPEND_ASSIGNMENT \
+	CONFIG_WITH_LOCAL_VARIABLES \
+	CONFIG_WITH_2ND_TARGET_EXPANSION \
+	CONFIG_WITH_ALLOC_CACHES \
+	CONFIG_WITH_STRCACHE2 \
+	\
+	KMK \
+	KMK_HELPERS \
+	CONFIG_NO_DEFAULT_SUFFIXES \
+	CONFIG_NO_DEFAULT_PATTERN_RULES	\
+	CONFIG_NO_DEFAULT_TERMINAL_RULES \
+	CONFIG_NO_DEFAULT_SUFFIX_RULES \
+	CONFIG_NO_DEFAULT_VARIABLES \
+	\
+	CONFIG_WITH_ABSPATHEX \
+	CONFIG_WITH_COMMANDS_FUNC \
+	CONFIG_WITH_DATE \
+	CONFIG_WITH_DEFINED_FUNCTIONS \
+	CONFIG_WITH_EVALPLUS \
+	CONFIG_WITH_FILE_SIZE \
+	CONFIG_WITH_LOOP_FUNCTIONS \
+	CONFIG_WITH_MATH \
+	CONFIG_WITH_NANOTS \
+	CONFIG_WITH_ROOT_FUNC \
+	CONFIG_WITH_RSORT \
+	CONFIG_WITH_STACK \
+	CONFIG_WITH_STRING_FUNCTIONS \
+	CONFIG_WITH_WHERE_FUNCTION \
+	CONFIG_WITH_WHICH \
+	CONFIG_WITH_XARGS \
+	\
+	CONFIG_WITH_EXTENDED_NOTPARALLEL \
+	CONFIG_WITH_INCLUDEDEP \
+	CONFIG_WITH_VALUE_LENGTH \
+	CONFIG_WITH_COMPARE \
+	CONFIG_WITH_SET_CONDITIONALS \
+	CONFIG_WITH_IF_CONDITIONALS \
+	CONFIG_WITH_PRINTF \
+	CONFIG_WITH_MINIMAL_STATS \
+	\
+	CONFIG_PRETTY_COMMAND_PRINTING \
+	CONFIG_WITH_PRINT_STATS_SWITCH \
+	CONFIG_WITH_PRINT_TIME_SWITCH \
+	CONFIG_WITH_RDONLY_VARIABLE_VALUE \
+	CONFIG_WITH_LAZY_DEPS_VARS \
+	CONFIG_WITH_MEMORY_OPTIMIZATIONS \
+	\
+	KBUILD_HOST=$(TMP_QUOTE_SLASH)"$(KBUILD_TARGET)$(TMP_QUOTE_SLASH)" \
+	KBUILD_HOST_ARCH=$(TMP_QUOTE_SLASH)"$(KBUILD_TARGET_ARCH)$(TMP_QUOTE_SLASH)" \
+	KBUILD_HOST_CPU=$(TMP_QUOTE_SLASH)"$(KBUILD_TARGET_CPU)$(TMP_QUOTE_SLASH)"
+# kmk_DEFS += CONFIG_WITH_COMPILER  # experimental, doesn't work 101% right it seems.
+kmk_DEFS.x86 = CONFIG_WITH_OPTIMIZATION_HACKS
+kmk_DEFS.amd64 = CONFIG_WITH_OPTIMIZATION_HACKS
+kmk_DEFS.win = CONFIG_NEW_WIN32_CTRL_EVENT CONFIG_WITH_OUTPUT_IN_MEMORY
+kmk_DEFS.debug = CONFIG_WITH_MAKE_STATS
+ifdef CONFIG_WITH_MAKE_STATS
+ kmk_DEFS += CONFIG_WITH_MAKE_STATS
+endif
+#ifdef CONFIG_WITH_KMK_BUILTIN_STATS
+ kmk_DEFS += CONFIG_WITH_KMK_BUILTIN_STATS
+#endif
+ifdef CONFIG_WITH_EVAL_COMPILER
+ kmk_DEFS += CONFIG_WITH_EVAL_COMPILER
+endif
+ifdef CONFIG_WITH_COMPILE_EVERYTHING
+ kmk_DEFS += CONFIG_WITH_COMPILE_EVERYTHING
+endif
+
+#ifeq ($(KBUILD_TYPE).$(USERNAME),debug.bird)
+# kmk_DEFS += CONFIG_WITH_COMPILER CONFIG_WITH_EVAL_COMPILER CONFIG_WITH_COMPILE_EVERYTHING
+#endif
+
+kmk_SOURCES = \
+	main.c \
+	read.c \
+	hash.c \
+	strcache.c \
+	variable.c \
+	ar.c \
+	arscan.c \
+	commands.c \
+	default.c \
+	expand.c \
+	file.c \
+	function.c \
+	implicit.c \
+	job.c \
+	misc.c \
+	output.c \
+	remake.c \
+	rule.c \
+	signame.c \
+	version.c \
+	vpath.c \
+	remote-stub.c \
+	guile.c \
+	load.c \
+       \
+	alloccache.c \
+	expreval.c \
+	incdep.c \
+	strcache2.c \
+       kmk_cc_exec.c \
+	kbuild.c \
+	kbuild-object.c
+ifeq ($(KBUILD_TARGET),win)
+ kmk_SOURCES += \
+ 	dir-nt-bird.c \
+ 	w32/w32os.c
+else
+ kmk_SOURCES += \
+ 	dir.c \
+ 	posixos.c
+endif
+
+ifndef CONFIG_NEW_WIN_CHILDREN
+kmk_SOURCES.win = \
+	w32/subproc/sub_proc.c
+else
+kmk_SOURCES.win = \
+	w32/winchildren.c
+endif
+
+kmk_DEFS.freebsd.x86 = CONFIG_WITHOUT_THREADS
+
+#kmk_LIBS.solaris = malloc
+#kmk_DEFS.solaris += HAVE_MALLINFO
+
+#
+# kmkbuiltin commands
+#
+kmk_DEFS += CONFIG_WITH_KMK_BUILTIN
+kmk_LIBS += $(LIB_KUTIL) #$(LIB_KDEP)
+kmk_SOURCES += \
+	kmkbuiltin.c \
+	kmkbuiltin/append.c \
+	kmkbuiltin/cat.c \
+	kmkbuiltin/chmod.c \
+	kmkbuiltin/cmp.c \
+	kmkbuiltin/cmp_util.c \
+	kmkbuiltin/cp.c \
+	kmkbuiltin/cp_utils.c \
+	kmkbuiltin/echo.c \
+	kmkbuiltin/expr.c \
+	kmkbuiltin/install.c \
+	kmkbuiltin/kDepIDB.c \
+	kmkbuiltin/kDepObj.c \
+	../lib/kDep.c \
+	kmkbuiltin/md5sum.c \
+	kmkbuiltin/mkdir.c \
+	kmkbuiltin/mv.c \
+	kmkbuiltin/ln.c \
+	kmkbuiltin/printf.c \
+	kmkbuiltin/redirect.c \
+	kmkbuiltin/rm.c \
+	kmkbuiltin/rmdir.c \
+	$(if-expr $(KBUILD_TARGET) == win,kmkbuiltin/kSubmit.c) \
+	kmkbuiltin/sleep.c \
+	kmkbuiltin/test.c \
+	kmkbuiltin/touch.c \
+       \
+	kmkbuiltin/err.c
+kmk_SOURCES.win += \
+	kmkbuiltin/kill.c
+
+
+## @todo kmkbuiltin/redirect.c
+
+## Some profiling
+#kmk_SOURCES += kbuildprf.c
+#kmk_DEFS += open=prf_open read=prf_read lseek=prf_lseek close=prf_close
+##kmk_DEFS += KMK_PRF=1
+##kmkmissing_DEFS += KMK_PRF=1
+
+#
+# Standalone kmkbuiltin commands.
+#
+PROGRAMS += \
+	kmk_append \
+	kmk_cat \
+	kmk_chmod \
+	kmk_cp \
+	kmk_cmp \
+	kmk_echo \
+	kmk_expr \
+	kmk_md5sum \
+	kmk_mkdir \
+	kmk_mv \
+	kmk_install \
+	kmk_ln \
+	kmk_printf \
+	kmk_redirect \
+	kmk_rm \
+	kmk_rmdir \
+	kmk_sleep \
+	kmk_test \
+	kmk_touch \
+	kDepIDB \
+	kDepObj
+PROGRAMS.win += \
+	kmk_kill
+
+kmk_append_TEMPLATE = BIN-KMK-BUILTIN
+kmk_append_INCS = .
+kmk_append_SOURCES = \
+	kmkbuiltin/append.c
+
+kmk_cat_TEMPLATE = BIN-KMK-BUILTIN
+kmk_cat_SOURCES = \
+	kmkbuiltin/cat.c
+
+kmk_chmod_TEMPLATE = BIN-KMK-BUILTIN
+kmk_chmod_SOURCES = \
+	kmkbuiltin/chmod.c
+
+kmk_cmp_TEMPLATE = BIN-KMK-BUILTIN
+kmk_cmp_SOURCES = \
+	kmkbuiltin/cmp.c \
+	kmkbuiltin/cmp_util.c
+
+kmk_cp_TEMPLATE = BIN-KMK-BUILTIN
+kmk_cp_SOURCES = \
+	kmkbuiltin/cp.c \
+	kmkbuiltin/cp_utils.c \
+	kmkbuiltin/cmp_util.c
+
+kmk_echo_TEMPLATE = BIN-KMK-BUILTIN
+kmk_echo_SOURCES = \
+	kmkbuiltin/echo.c
+
+kmk_expr_TEMPLATE = BIN-KMK-BUILTIN
+kmk_expr_SOURCES = \
+	kmkbuiltin/expr.c
+
+kmk_install_TEMPLATE = BIN-KMK-BUILTIN
+kmk_install_SOURCES = \
+	kmkbuiltin/install.c
+
+kmk_kill_TEMPLATE = BIN-KMK-BUILTIN
+kmk_kill_SOURCES = \
+	kmkbuiltin/kill.c
+
+kmk_ln_TEMPLATE = BIN-KMK-BUILTIN
+kmk_ln_SOURCES = \
+	kmkbuiltin/ln.c
+
+kmk_mkdir_TEMPLATE = BIN-KMK-BUILTIN
+kmk_mkdir_SOURCES = \
+	kmkbuiltin/mkdir.c
+
+kmk_md5sum_TEMPLATE = BIN-KMK-BUILTIN
+kmk_md5sum_SOURCES = \
+	kmkbuiltin/md5sum.c
+kmk_md5sum_LIBS = $(LIB_KUTIL)
+
+kmk_mv_TEMPLATE = BIN-KMK-BUILTIN
+kmk_mv_SOURCES = \
+	kmkbuiltin/mv.c
+
+kmk_printf_TEMPLATE = BIN-KMK-BUILTIN
+kmk_printf_SOURCES = \
+	kmkbuiltin/printf.c
+
+kmk_rm_TEMPLATE = BIN-KMK-BUILTIN
+kmk_rm_SOURCES = \
+	kmkbuiltin/rm.c
+
+kmk_redirect_TEMPLATE = BIN-KMK-BUILTIN
+kmk_redirect_SOURCES = \
+	kmkbuiltin/redirect.c
+kmk_redirect_SOURCES.win = \
+	../lib/startuphacks-win.c
+
+kmk_rmdir_TEMPLATE = BIN-KMK-BUILTIN
+kmk_rmdir_SOURCES = \
+	kmkbuiltin/rmdir.c
+
+kmk_sleep_TEMPLATE = BIN-KMK-BUILTIN
+kmk_sleep_SOURCES = \
+	kmkbuiltin/sleep.c
+
+kmk_test_TEMPLATE = BIN-KMK-BUILTIN
+kmk_test_SOURCES = \
+	kmkbuiltin/test.c
+
+kmk_touch_TEMPLATE = BIN-KMK-BUILTIN
+kmk_touch_SOURCES = \
+	kmkbuiltin/touch.c
+
+kDepIDB_TEMPLATE = BIN-KMK-BUILTIN
+kDepIDB_INCS = .
+kDepIDB_LIBS = $(LIB_KDEP) $(LIB_KUTIL)
+kDepIDB_SOURCES = \
+	kmkbuiltin/kDepIDB.c
+
+kDepObj_TEMPLATE = BIN-KMK-BUILTIN
+kDepObj_INCS = .
+kDepObj_LIBS = $(LIB_KDEP) $(LIB_KUTIL)
+kDepObj_SOURCES = \
+	kmkbuiltin/kDepObj.c
+
+
+#
+# kmk_gmake - almost plain GNU Make.
+#
+PROGRAMS += kmk_gmake
+
+kmk_gmake_TEMPLATE = BIN-KMK
+kmk_gmake_DEFS = \
+	HAVE_CONFIG_H \
+	CONFIG_WITH_TOUPPER_TOLOWER \
+	EXPERIMENTAL
+#	NO_ARCHIVES
+
+kmk_gmake_SOURCES = \
+	main.c \
+	read.c \
+	hash.c \
+	strcache.c \
+	variable.c \
+	ar.c \
+	arscan.c \
+	commands.c \
+	default.c \
+	dir.c \
+	expand.c \
+	file.c \
+	function.c \
+	implicit.c \
+	job.c \
+	misc.c \
+	output.c \
+	remake.c \
+	rule.c \
+	signame.c \
+	version.c \
+	vpath.c \
+	remote-stub.c \
+	guile.c \
+	load.c
+ifeq ($(KBUILD_TARGET),win)
+ kmk_gmake_SOURCES += \
+ 	w32/w32os.c
+else
+ kmk_gmake_SOURCES += \
+ 	posixos.c
+endif
+
+ifndef CONFIG_NEW_WIN_CHILDREN
+kmk_gmake_SOURCES.win = \
+	w32/subproc/sub_proc.c
+else
+kmk_gmake_SOURCES.win = \
+	w32/winchildren.c
+endif
+
+
+#
+# kmk_fmake - Faster GNU Make.
+#
+ifeq ($(USER),bird) # for experimental purposes only.
+PROGRAMS += kmk_fgmake
+endif
+
+kmk_fgmake_TEMPLATE = BIN-KMK
+kmk_fgmake_DEFS = \
+	HAVE_CONFIG_H \
+	NO_ARCHIVES \
+	CONFIG_WITH_TOUPPER_TOLOWER \
+	EXPERIMENTAL \
+	\
+	CONFIG_WITH_ALLOC_CACHES \
+	CONFIG_WITH_LAZY_DEPS_VARS \
+	CONFIG_WITH_STRCACHE2 \
+	CONFIG_WITH_VALUE_LENGTH \
+	CONFIG_WITH_RDONLY_VARIABLE_VALUE
+# TODO  ?
+#	CONFIG_WITH_PRINT_STATS_SWITCH \
+#	CONFIG_WITH_EXTENDED_NOTPARALLEL \
+
+kmk_fgmake_SOURCES = \
+	main.c \
+	read.c \
+	hash.c \
+	strcache.c \
+	strcache2.c \
+	variable.c \
+	ar.c \
+	arscan.c \
+	commands.c \
+	default.c \
+	dir.c \
+	expand.c \
+	file.c \
+	function.c \
+	implicit.c \
+	job.c \
+	misc.c \
+	output.c \
+	alloccache.c \
+	remake.c \
+	rule.c \
+	signame.c \
+	version.c \
+	vpath.c \
+	remote-stub.c \
+	guile.c \
+	load.c
+ifeq ($(KBUILD_TARGET),win)
+ kmk_fgmake_SOURCES += \
+ 	w32/w32os.c
+# @todo: dir-nt-bird.c for fgmake
+else
+ kmk_fgmake_SOURCES += \
+ 	posixos.c
+endif
+
+kmk_fgmake_SOURCES.win = \
+	w32/subproc/sub_proc.c
+
+
+#
+# tstFileInfo
+#
+PROGRAMS.win += tstFileInfo
+tstFileInfo_TEMPLATE = BIN
+tstFileInfo_SOURCES = w32/tstFileInfo.c
+
+#
+# tstFileInfo
+#
+PROGRAMS.win += tstFtsFake
+tstFtsFake_TEMPLATE = BIN-KMK
+tstFtsFake_NOINST = 1
+tstFtsFake_DEFS = USE_OLD_FTS
+tstFtsFake_SOURCES = ../lib/nt/tstNtFts.c
+
+
+
+include $(FILE_KBUILD_SUB_FOOTER)
+
+
+#
+# Use checked in config.h instead of running ./Configure for it.
+#
+kmk_config.h.$(KBUILD_TARGET) := $(kmk_DEFPATH)/config.h.$(KBUILD_TARGET)
+$(kmk_0_OUTDIR)/config.h: $(kmk_config.h.$(KBUILD_TARGET))
+	$(MKDIR) -p $(dir $@)
+	$(CP) $^ $@
+
+#
+# Some missing headers.
+#
+if1of ($(KBUILD_TARGET), win nt)
+$(kmk_0_OUTDIR)/fts.h: $(MAKEFILE) | $(call DIRDEP,$(kmk_0_OUTDIR))
+	$(APPEND) -t "$@" "#include <nt/fts-nt.h>"
+else
+$(kmk_0_OUTDIR)/fts.h: $(kmk_DEFPATH)/kmkbuiltin/ftsfake.h | $(call DIRDEP,$(kmk_0_OUTDIR))
+	$(CP) $^ $@
+endif
+
+$(kmk_0_OUTDIR)/unistd.h: | $(call DIRDEP,$(kmk_0_OUTDIR))
+	$(ECHO_EXT) > $@
+
+$(kmk_0_OUTDIR)/sysexits.h: | $(call DIRDEP,$(kmk_0_OUTDIR))
+	$(ECHO_EXT) > $@
+
+$(kmk_0_OUTDIR)/inttypes.h: | $(call DIRDEP,$(kmk_0_OUTDIR))
+	$(ECHO_EXT) > $@
+
+$(kmk_0_OUTDIR)/paths.h: | $(call DIRDEP,$(kmk_0_OUTDIR))
+	$(ECHO_EXT) > $@
+
+$(kmk_0_OUTDIR)/pwd.h: | $(call DIRDEP,$(kmk_0_OUTDIR))
+	$(ECHO_EXT) > $@
+
+$(kmk_0_OUTDIR)/grp.h: | $(call DIRDEP,$(kmk_0_OUTDIR))
+	$(ECHO_EXT) > $@
+
+
+#
+# Some tests.
+#
+parallel: parallel_1 parallel_2 parallel_3 parallel_4 parallel_5
+parallel_1 parallel_2 parallel_3 parallel_4 parallel_5:
+	echo $@_start ; sleep 1; echo $@_done
+
+my_test:
+	echo "1"
+	echo "2"
+	echo "3"
+	echo "4"
+
+
+#
+# Shell execution tests.
+#
+test_shell: test_shell_quoting test_shell_double_quoting test_shell_newline
+
+# shell double and single quoting check (was busted on windows in 3.81).
+test_shell_quoting:
+	$(ECHO_EXT) "double quoted sTrInG"
+	$(ECHO_EXT) "double quoted sTrInG" | $(SED_EXT) -e "s/sTrInG/string/g"
+	$(ECHO_EXT) 'single quoted sTrInG' | $(SED_EXT) -e 's/sTrInG/string/g'
+	$(ECHO) "This string should not be printed with double quotes."
+	$(ECHO) 'This string should not be printed with single quotes.'
+	( echo "  #define PWD \"`pwd`\""; )
+
+test_shell_double_quoting:
+	$(ECHO_EXT) "foo foo foo" | $(SED_EXT) -e \
+		"s/foo/$@/" -e \
+		"s/foo/works/" \
+		-e "s/foo/\!/"
+
+test_shell_double_quoting2:
+	$(ECHO_EXT) "foo foo foo" | $(SED_EXT) -e \
+		"s/foo/$@/" -e \
+		"s/foo/works/" \
+		-e\
+		"s/foo/\!/"
+
+# when using batch mode shell, the newline got escaped twice and spoiling everything.
+test_shell_newline:
+	$(ECHO_EXT) "foo foo foo" | $(SED_EXT) -e \
+		's/foo/$@/' -e \
+		's/foo/works/' \
+		-e 's/foo/\!/'
+
+
+test_stack:
+	$(MAKE) -f $(kmk_DEFPATH)/testcase-stack.kmk
+
+test_math:
+	$(MAKE) -f $(kmk_DEFPATH)/testcase-math.kmk
+
+test_if1of:
+	$(MAKE) -f $(kmk_DEFPATH)/testcase-if1of.kmk
+
+test_local:
+	$(MAKE) -f $(kmk_DEFPATH)/testcase-local.kmk
+
+test_includedep:
+	$(MAKE) -f $(kmk_DEFPATH)/testcase-includedep.kmk
+
+test_root:
+	$(MAKE) -f $(kmk_DEFPATH)/testcase-root.kmk
+
+test_2ndtargetexp:
+	$(MAKE) -f $(kmk_DEFPATH)/testcase-2ndtargetexp.kmk
+
+test_30_continued_on_failure_worker:
+	this_executable_does_not_exist.exe
+	echo "We shouldn't see this..."
+
+test_30_continued_on_failure:
+	$(MAKE) -f $(MAKEFILE) test_30_continued_on_failure_worker; \
+	RC=$$?; \
+	if test $${RC} -ne 2; then \
+		echo "$@: FAILED - exit code $${RC} instead of 2."; \
+		exit 1; \
+	else \
+		echo "$@: SUCCESS"; \
+	fi
+
+test_lazy_deps_vars:
+	$(MAKE) -C $(kmk_DEFPATH) -f testcase-lazy-deps-vars.kmk
+
+
+test_all: \
+        test_math \
+        test_stack \
+        test_shell \
+        test_if1of \
+        test_local \
+        test_root \
+        test_includedep \
+        test_2ndtargetexp \
+        test_30_continued_on_failure \
+        test_lazy_deps_vars
+
+
diff --git a/src/kmk/Makefile.os2 b/src/kmk/Makefile.os2
new file mode 100644
index 0000000..5f61dde
--- /dev/null
+++ b/src/kmk/Makefile.os2
@@ -0,0 +1,47 @@
+# $Id: Makefile.os2 200 2004-12-17 14:05:38Z bird $
+
+OBJDIR = objdir/OS2.libc
+#OBJDIR = .
+SRC =	ar.c arscan.c commands.c default.c dir.c expand.c file.c \
+		function.c implicit.c job.c main.c \
+		misc.c read.c remake.c rule.c signame.c \
+		variable.c version.c vpath.c hash.c \
+        getopt.c getopt1.c remote-stub.c
+OBJS = $(addprefix $(OBJDIR)/, $(SRC:.c=.obj))
+CFLAGS = -Zomf -g -Wall -I$(OBJDIR) -I.  -DCONFIG_NO_DEFAULT_SUFFIXES \
+    -DCONFIG_NO_DEFAULT_PATTERN_RULES -DCONFIG_NO_DEFAULT_TERMINAL_RULES \
+    -DCONFIG_NO_DEFAULT_SUFFIX_RULES -DCONFIG_NO_DEFAULT_VARIABLES
+ifndef DEBUG
+CFLAGS += -O3
+endif
+#-DMAKE_DLLSHELL
+
+all: $(OBJDIR) $(OBJDIR)/make-new.exe
+
+clean:
+	rm -f $(OBJS) $(OBJDIR)/make-new.exe $(OBJDIR)/config.h
+
+$(OBJDIR)/make-new.exe: $(OBJDIR)/config.h $(OBJS)
+	gcc -g $(CFLAGS) -Zhigh-mem -Zstack 1024 -o $@ $(OBJS)
+
+$(OBJDIR)/%.obj : %.c
+	gcc -c $(CFLAGS) -o $@ -DHAVE_CONFIG_H  $<
+
+$(OBJDIR)/config.h: config.h.os2
+	cp $< $@
+
+$(OBJDIR):
+	mkdir.exe -p $@
+
+test:
+	echo "1"
+	echo "2"
+	echo "3"
+	echo "4"
+
+parallel: parallel_1 parallel_2 parallel_3 parallel_4 parallel_5
+
+parallel_1 parallel_2 parallel_3 parallel_4 parallel_5:
+	echo $@_start ; sleep 1; echo $@_done
+
+
diff --git a/src/kmk/NEWS b/src/kmk/NEWS
new file mode 100644
index 0000000..0b04245
--- /dev/null
+++ b/src/kmk/NEWS
@@ -0,0 +1,1540 @@
+GNU make NEWS                                               -*-indented-text-*-
+  History of user-visible changes.
+  10 June 2016
+
+See the end of this file for copyrights and conditions.
+
+All changes mentioned here are more fully described in the GNU make
+manual, which is contained in this distribution as the file doc/make.texi.
+See the README file and the GNU make manual for instructions for
+reporting bugs.
+
+Version 4.2.1 (10 Jun 2016)
+
+A complete list of bugs fixed in this version is available here:
+h
+ttp://sv.gnu.org/bugs/index.php?group=make&report_id=111&fix_release_id=107&set=custom
+
+This release is a bug-fix release.
+
+
+Version 4.2 (22 May 2016)
+
+A complete list of bugs fixed in this version is available here:
+
+http://sv.gnu.org/bugs/index.php?group=make&report_id=111&fix_release_id=106&set=custom
+
+* New variable: $(.SHELLSTATUS) is set to the exit status of the last != or
+  $(shell ...) function invoked in this instance of make.  This will be "0" if
+  successful or not "0" if not successful.  The variable value is unset if no
+  != or $(shell ...) function has been invoked.
+
+* The $(file ...) function can now read from a file with $(file <FILE).
+  The function is expanded to the contents of the file.  The contents are
+  expanded verbatim except that the final newline, if any, is stripped.
+
+* The makefile line numbers shown by GNU make now point directly to the
+  specific line in the recipe where the failure or warning occurred.
+  Sample changes suggested by Brian Vandenberg <phantall@gmail.com>
+
+* The interface to GNU make's "jobserver" is stable as documented in the
+  manual, for tools which may want to access it.
+
+  WARNING: Backward-incompatibility! The internal-only command line option
+  --jobserver-fds has been renamed for publishing, to --jobserver-auth.
+
+* The amount of parallelism can be determined by querying MAKEFLAGS, even when
+  the job server is enabled (previously MAKEFLAGS would always contain only
+  "-j", with no number, when job server was enabled).
+
+* VMS-specific changes:
+
+  * Perl test harness now works.
+
+  * Full support for converting Unix exit status codes to VMS exit status
+    codes.  BACKWARD INCOMPATIBILITY Notice: On a child failure the VMS exit
+    code is now the encoded Unix exit status that Make usually generates, not
+    the VMS exit status of the child.
+
+
+Version 4.1 (05 Oct 2014)
+
+A complete list of bugs fixed in this version is available here:
+
+http://sv.gnu.org/bugs/index.php?group=make&report_id=111&fix_release_id=105&set=custom
+
+* New variables: $(MAKE_TERMOUT) and $(MAKE_TERMERR) are set to non-empty
+  values if stdout or stderr, respectively, are believed to be writing to a
+  terminal.  These variables are exported by default.
+
+* Allow a no-text-argument form of the $(file ...) function.  Without a text
+  argument nothing is written to the file: it is simply opened in the
+  requested mode, then closed again.
+
+* Change the fatal error for mixed explicit and implicit rules, that was
+  introduced in GNU make 3.82, to a non-fatal error.  However, this syntax is
+  still deprecated and may return to being illegal in a future version of GNU
+  make.  Makefiles that rely on this syntax should be fixed.
+  See https://savannah.gnu.org/bugs/?33034
+
+* VMS-specific changes:
+
+  * Support for library files added, including support for using the GNV ar
+    utility.
+
+  * Partial support for properly encoding Unix exit status codes into VMS exit
+    status codes.
+
+    WARNING: Backward-incompatibility! These are different exit status codes
+    than Make exited with in the past.
+
+  * Macros to hold the current make command are set up to translate the
+    argv[0] string to a VMS format path name and prefix it with "MCR " so that
+    the macro has a space in it.
+
+    WARNING: Backward-incompatibility!  This may break complex makefiles that
+    do processing on those macros.  This is unlikely because so much in that
+    area was not and is still not currently working on VMS, it is unlikely to
+    find such a complex makefile, so this is more likely to impact
+    construction of a future makefile.
+
+  * A command file is always used to run the commands for a recipe.
+
+    WARNING: Backward-incompatibility!  Running the make self tests has
+    exposed that there are significant differences in behavior when running
+    with the command file mode.  It is unknown if this will be noticed by most
+    existing VMS makefiles.
+
+Version 4.0 (09 Oct 2013)
+
+A complete list of bugs fixed in this version is available here:
+
+http://sv.gnu.org/bugs/index.php?group=make&report_id=111&fix_release_id=101&set=custom
+
+* WARNING: Backward-incompatibility!
+  If .POSIX is specified, then make adheres to the POSIX backslash/newline
+  handling requirements, which introduces the following changes to the
+  standard backslash/newline handling in non-recipe lines:
+  * Any trailing space before the backslash is preserved
+  * Each backslash/newline (plus subsequent whitespace) is converted to a
+    single space
+
+* New feature: GNU Guile integration
+  This version of GNU make can be compiled with GNU Guile integration.
+  GNU Guile serves as an embedded extension language for make.
+  See the "Guile Function" section in the GNU Make manual for details.
+  Currently GNU Guile 1.8 and 2.0+ are supported.  In Guile 1.8 there is no
+  support for internationalized character sets.  In Guile 2.0+, scripts can be
+  encoded in UTF-8.
+
+* New command line option: --output-sync (-O) enables grouping of output by
+  target or by recursive make.  This is useful during parallel builds to avoid
+  mixing output from different jobs together giving hard-to-understand
+  results.  Original implementation by David Boyce <dsb@boyski.com>.
+  Reworked and enhanced by Frank Heckenbach <f.heckenbach@fh-soft.de>.
+  Windows support by Eli Zaretskii <eliz@gnu.org>.
+
+* New command line option: --trace enables tracing of targets.  When enabled
+  the recipe to be invoked is printed even if it would otherwise be suppressed
+  by .SILENT or a "@" prefix character.  Also before each recipe is run the
+  makefile name and linenumber where it was defined are shown as well as the
+  prerequisites that caused the target to be considered out of date.
+
+* New command line option argument: --debug now accepts a "n" (none) flag
+  which disables all debugging settings that are currently enabled.
+
+* New feature: The "job server" capability is now supported on Windows.
+  Implementation contributed by Troy Runkel <Troy.Runkel@mathworks.com>
+
+* New feature: The .ONESHELL capability is now supported on Windows.  Support
+  added by Eli Zaretskii <eliz@gnu.org>.
+
+* New feature: "!=" shell assignment operator as an alternative to the
+  $(shell ...) function.  Implemented for compatibility with BSD makefiles.
+  Note there are subtle differences between "!=" and $(shell ...).  See the
+  description in the GNU make manual.
+  WARNING: Backward-incompatibility!
+  Variables ending in "!" previously defined as "variable!= value" will now be
+  interpreted as shell assignment.  Change your assignment to add whitespace
+  between the "!" and "=": "variable! = value"
+
+* New feature: "::=" simple assignment operator as defined by POSIX in 2012.
+  This operator has identical functionality to ":=" in GNU make, but will be
+  portable to any implementation of make conforming to a sufficiently new
+  version of POSIX (see http://austingroupbugs.net/view.php?id=330).  It is
+  not necessary to define the .POSIX target to access this operator.
+
+* New feature: Loadable objects
+  This version of GNU make contains a "technology preview": the ability to
+  load dynamic objects into the make runtime.  These objects can be created by
+  the user and can add extended functionality, usable by makefiles.
+
+* New function: $(file ...) writes to a file.
+
+* New variable: $(GNUMAKEFLAGS) will be parsed for make flags, just like
+  MAKEFLAGS is.  It can be set in the environment or the makefile, containing
+  GNU make-specific flags to allow your makefile to be portable to other
+  versions of make.  Once this variable is parsed, GNU make will set it to the
+  empty string so that flags will not be duplicated on recursion.
+
+* New variable: `MAKE_HOST' gives the name of the host architecture
+  make was compiled for.  This is the same value you see after 'Built for'
+  when running 'make --version'.
+
+* Behavior of MAKEFLAGS and MFLAGS is more rigorously defined.  All simple
+  flags are grouped together in the first word of MAKEFLAGS.  No options that
+  accept arguments appear in the first word.  If no simple flags are present
+  MAKEFLAGS begins with a space.  Flags with both short and long versions
+  always use the short versions in MAKEFLAGS.  Flags are listed in
+  alphabetical order using ASCII ordering.  MFLAGS never begins with "- ".
+
+* Setting the -r and -R options in MAKEFLAGS inside a makefile now works as
+  expected, removing all built-in rules and variables, respectively.
+
+* If a recipe fails, the makefile name and linenumber of the recipe are shown.
+
+* A .RECIPEPREFIX setting is remembered per-recipe and variables expanded
+  in that recipe also use that recipe prefix setting.
+
+* In -p output, .RECIPEPREFIX settings are shown and all target-specific
+  variables are output as if in a makefile, instead of as comments.
+
+* On MS-Windows, recipes that use ".." quoting will no longer force
+  invocation of commands via temporary batch files and stock Windows
+  shells, they will be short-circuited and invoked directly.  (In
+  other words, " is no longer a special character for stock Windows
+  shells.)  This avoids hitting shell limits for command length when
+  quotes are used, but nothing else in the command requires the shell.
+  This change could potentially mean some minor incompatibilities in
+  behavior when the recipe uses quoted string on shell command lines.
+
+
+Version 3.82 (28 Jul 2010)
+
+A complete list of bugs fixed in this version is available here:
+
+http://sv.gnu.org/bugs/index.php?group=make&report_id=111&fix_release_id=104&set=custom
+
+* Compiling GNU make now requires a conforming ISO C 1989 compiler and
+  standard runtime library.
+
+* WARNING: Backward-incompatibility!
+  The POSIX standard for make was changed in the 2008 version in a
+  fundamentally incompatible way: make is required to invoke the shell as if
+  the '-e' flag were provided.  Because this would break many makefiles that
+  have been written to conform to the original text of the standard, the
+  default behavior of GNU make remains to invoke the shell with simply '-c'.
+  However, any makefile specifying the .POSIX special target will follow the
+  new POSIX standard and pass '-e' to the shell.  See also .SHELLFLAGS
+  below.
+
+* WARNING: Backward-incompatibility!
+  The '$?' variable now contains all prerequisites that caused the target to
+  be considered out of date, even if they do not exist (previously only
+  existing targets were provided in $?).
+
+* WARNING: Backward-incompatibility!
+  Wildcards were not documented as returning sorted values, but the results
+  have been sorted up until this release..  If your makefiles require sorted
+  results from wildcard expansions, use the $(sort ...)  function to request
+  it explicitly.
+
+* WARNING: Backward-incompatibility!
+  As a result of parser enhancements, three backward-compatibility issues
+  exist: first, a prerequisite containing an "=" cannot be escaped with a
+  backslash any longer.  You must create a variable containing an "=" and
+  use that variable in the prerequisite.  Second, variable names can no
+  longer contain whitespace, unless you put the whitespace in a variable and
+  use the variable.  Third, in previous versions of make it was sometimes
+  not flagged as an error for explicit and pattern targets to appear in the
+  same rule.  Now this is always reported as an error.
+
+* WARNING: Backward-incompatibility!
+  The pattern-specific variables and pattern rules are now applied in the
+  shortest stem first order instead of the definition order (variables
+  and rules with the same stem length are still applied in the definition
+  order). This produces the usually-desired behavior where more specific
+  patterns are preferred. To detect this feature search for 'shortest-stem'
+  in the .FEATURES special variable.
+
+* WARNING: Backward-incompatibility!
+  The library search behavior has changed to be compatible with the standard
+  linker behavior. Prior to this version for prerequisites specified using
+  the -lfoo syntax make first searched for libfoo.so in the current
+  directory, vpath directories, and system directories. If that didn't yield
+  a match, make then searched for libfoo.a in these directories. Starting
+  with this version make searches first for libfoo.so and then for libfoo.a
+  in each of these directories in order.
+
+* New command line option: --eval=STRING causes STRING to be evaluated as
+  makefile syntax (akin to using the $(eval ...) function).  The evaluation
+  is performed after all default rules and variables are defined, but before
+  any makefiles are read.
+
+* New special variable: .RECIPEPREFIX allows you to reset the recipe
+  introduction character from the default (TAB) to something else.  The
+  first character of this variable value is the new recipe introduction
+  character.  If the variable is set to the empty string, TAB is used again.
+  It can be set and reset at will; recipes will use the value active when
+  they were first parsed.  To detect this feature check the value of
+  $(.RECIPEPREFIX).
+
+* New special variable: .SHELLFLAGS allows you to change the options passed
+  to the shell when it invokes recipes.  By default the value will be "-c"
+  (or "-ec" if .POSIX is set).
+
+* New special target: .ONESHELL instructs make to invoke a single instance
+  of the shell and provide it with the entire recipe, regardless of how many
+  lines it contains.  As a special feature to allow more straightforward
+  conversion of makefiles to use .ONESHELL, any recipe line control
+  characters ('@', '+', or '-') will be removed from the second and
+  subsequent recipe lines.  This happens _only_ if the SHELL value is deemed
+  to be a standard POSIX-style shell.  If not, then no interior line control
+  characters are removed (as they may be part of the scripting language used
+  with the alternate SHELL).
+
+* New variable modifier 'private': prefixing a variable assignment with the
+  modifier 'private' suppresses inheritance of that variable by
+  prerequisites.  This is most useful for target- and pattern-specific
+  variables.
+
+* New make directive: 'undefine' allows you to undefine a variable so that
+  it appears as if it was never set. Both $(flavor) and $(origin) functions
+  will return 'undefined' for such a variable. To detect this feature search
+  for 'undefine' in the .FEATURES special variable.
+
+* The parser for variable assignments has been enhanced to allow multiple
+  modifiers ('export', 'override', 'private') on the same line as variables,
+  including define/endef variables, and in any order.  Also, it is possible
+  to create variables and targets named as these modifiers.
+
+* The 'define' make directive now allows a variable assignment operator
+  after the variable name, to allow for simple, conditional, or appending
+  multi-line variable assignment.
+
+* VMS-specific changes:
+
+  * Michael Gehre (at VISTEC-SEMI dot COM) supplied a fix for a problem with
+    timestamps of object modules in OLBs. The timestamps were not correctly
+    adjusted to GMT based time, if the local VMS time was using a daylight
+    saving algorithm and if daylight saving was switched off.
+
+  * John Eisenbraun (at HP dot COM) supplied fixes and and an enhancement to
+    append output redirection in action lines.
+
+  * Rework of ctrl+c and ctrl+y handling.
+
+  * Fix a problem with cached strings, which showed on case-insensitive file
+    systems.
+
+  * Build fixes for const-ified code in VMS specific sources.
+
+  * A note on appending the redirected output. With this change, a simple
+    mechanism is implemented to make ">>" work in action lines. In VMS
+    there is no simple feature like ">>" to have DCL command or program
+    output redirected and appended to a file. GNU make for VMS already
+    implements the redirection of output. If such a redirection is detected,
+    an ">" on the action line, GNU make creates a DCL command procedure to
+    execute the action and to redirect its output. Based on that, now ">>"
+    is also recognized and a similar but different command procedure is
+    created to implement the append. The main idea here is to create a
+    temporary file which collects the output and which is appended to the
+    wanted output file. Then the temporary file is deleted. This is all done
+    in the command procedure to keep changes in make small and simple. This
+    obviously has some limitations but it seems good enough compared with
+    the current ">" implementation. (And in my opinion, redirection is not
+    really what GNU make has to do.) With this approach, it may happen that
+    the temporary file is not yet appended and is left in SYS$SCRATCH.
+    The temporary file names look like "CMDxxxxx.". Any time the created
+    command procedure can not complete, this happens. Pressing Ctrl+Y to
+    abort make is one case. In case of Ctrl+Y the associated command
+    procedure is left in SYS$SCRATCH as well. Its name is CMDxxxxx.COM.
+
+  * Change in the Ctrl+Y handling. The CtrlY handler now uses $delprc to
+    delete all children. This way also actions with DCL commands will be
+    stopped. As before the CtrlY handler then sends SIGQUIT to itself,
+    which is handled in common code.
+
+  * Change in deleteing temporary command files. Temporary command files
+    are now deleted in the vms child termination handler. That deletes
+    them even if a Ctrl+C was pressed.
+
+  * The behavior of pressing Ctrl+C is not changed. It still has only an
+    effect, after the current action is terminated. If that doesn't happen
+    or takes too long, Ctrl+Y should be used instead.
+
+
+Version 3.81 (01 Apr 2006)
+
+* GNU make is ported to OS/2.
+
+* GNU make is ported to MinGW.  The MinGW build is only supported by
+  the build_w32.bat batch file; see the file README.W32 for more
+  details.
+
+* WARNING: Future backward-incompatibility!
+  Up to and including this release, the '$?' variable does not contain
+  any prerequisite that does not exist, even though that prerequisite
+  might have caused the target to rebuild.  Starting with the _next_
+  release of GNU make, '$?' will contain all prerequisites that caused
+  the target to be considered out of date.
+  See http://savannah.gnu.org/bugs/?16051
+
+* WARNING: Backward-incompatibility!
+  GNU make now implements a generic "second expansion" feature on the
+  prerequisites of both explicit and implicit (pattern) rules.  In order
+  to enable this feature, the special target '.SECONDEXPANSION' must be
+  defined before the first target which takes advantage of it.  If this
+  feature is enabled then after all rules have been parsed the
+  prerequisites are expanded again, this time with all the automatic
+  variables in scope.  This means that in addition to using standard
+  SysV $$@ in prerequisites lists, you can also use complex functions
+  such as $$(notdir $$@) etc.  This behavior applies to implicit rules,
+  as well, where the second expansion occurs when the rule is matched.
+  However, this means that when '.SECONDEXPANSION' is enabled you must
+  double-quote any "$" in your filenames; instead of "foo: boo$$bar" you
+  now must write "foo: foo$$$$bar".  Note that the SysV $$@ etc. feature,
+  which used to be available by default, is now ONLY available when the
+  .SECONDEXPANSION target is defined.  If your makefiles take advantage
+  of this SysV feature you will need to update them.
+
+* WARNING: Backward-incompatibility!
+  In order to comply with POSIX, the way in which GNU make processes
+  backslash-newline sequences in recipes has changed.  If your makefiles
+  use backslash-newline sequences inside of single-quoted strings in
+  recipes you will be impacted by this change.  See the GNU make manual
+  subsection "Splitting Recipe Lines" (node "Splitting Lines"), in
+  section "Recipe Syntax", chapter "Writing Recipe in Rules", for
+  details.
+
+* WARNING: Backward-incompatibility!
+  Some previous versions of GNU make had a bug where "#" in a function
+  invocation such as $(shell ...) was treated as a make comment.  A
+  workaround was to escape these with backslashes.  This bug has been
+  fixed: if your makefile uses "\#" in a function invocation the
+  backslash is now preserved, so you'll need to remove it.
+
+* New command line option: -L (--check-symlink-times).  On systems that
+  support symbolic links, if this option is given then GNU make will
+  use the most recent modification time of any symbolic links that are
+  used to resolve target files.  The default behavior remains as it
+  always has: use the modification time of the actual target file only.
+
+* The "else" conditional line can now be followed by any other valid
+  conditional on the same line: this does not increase the depth of the
+  conditional nesting, so only one "endif" is required to close the
+  conditional.
+
+* All pattern-specific variables that match a given target are now used
+  (previously only the first match was used).
+
+* Target-specific variables can be marked as exportable using the
+  "export" keyword.
+
+* In a recursive $(call ...) context, any extra arguments from the outer
+  call are now masked in the context of the inner call.
+
+* Implemented a solution for the "thundering herd" problem with "-j -l".
+  This version of GNU make uses an algorithm suggested by Thomas Riedl
+  <thomas.riedl@siemens.com> to track the number of jobs started in the
+  last second and artificially adjust GNU make's view of the system's
+  load average accordingly.
+
+* New special variables available in this release:
+   - .INCLUDE_DIRS: Expands to a list of directories that make searches
+     for included makefiles.
+   - .FEATURES: Contains a list of special features available in this
+     version of GNU make.
+   - .DEFAULT_GOAL: Set the name of the default goal make will
+     use if no goals are provided on the command line.
+   - MAKE_RESTARTS: If set, then this is the number of times this
+     instance of make has been restarted (see "How Makefiles Are Remade"
+     in the manual).
+   - New automatic variable: $| (added in 3.80, actually): contains all
+     the order-only prerequisites defined for the target.
+
+* New functions available in this release:
+   - $(lastword ...) returns the last word in the list.  This gives
+     identical results as $(word $(words ...) ...), but is much faster.
+   - $(abspath ...) returns the absolute path (all "." and ".."
+     directories resolved, and any duplicate "/" characters removed) for
+     each path provided.
+   - $(realpath ...) returns the canonical pathname for each path
+     provided.  The canonical pathname is the absolute pathname, with
+     all symbolic links resolved as well.
+   - $(info ...) prints its arguments to stdout.  No makefile name or
+     line number info, etc. is printed.
+   - $(flavor ...) returns the flavor of a variable.
+   - $(or ...) provides a short-circuiting OR conditional: each argument
+     is expanded.  The first true (non-empty) argument is returned; no
+     further arguments are expanded.  Expands to empty if there are no
+     true arguments.
+   - $(and ...) provides a short-circuiting AND conditional: each
+     argument is expanded.  The first false (empty) argument is
+     returned; no further arguments are expanded.  Expands to the last
+     argument if all arguments are true.
+
+* Changes made for POSIX compatibility:
+   - Only touch targets (under -t) if they have a recipe.
+   - Setting the SHELL make variable does NOT change the value of the
+     SHELL environment variable given to programs invoked by make.  As
+     an enhancement to POSIX, if you export the make variable SHELL then
+     it will be set in the environment, just as before.
+
+* On MS Windows systems, explicitly setting SHELL to a pathname ending
+  in "cmd" or "cmd.exe" (case-insensitive) will force GNU make to use
+  the DOS command interpreter in batch mode even if a UNIX-like shell
+  could be found on the system.
+
+* On VMS there is now support for case-sensitive filesystems such as ODS5.
+  See the README.VMS file for information.
+
+* Parallel builds (-jN) no longer require a working Bourne shell on
+  Windows platforms.  They work even with the stock Windows shells, such
+  as cmd.exe and command.com.
+
+* Updated to autoconf 2.59, automake 1.9.5, and gettext 0.14.1.  Users
+  should not be impacted.
+
+* New translations for Swedish, Chinese (simplified), Ukrainian,
+  Belarusian, Finnish, Kinyarwandan, and Irish.  Many updated
+  translations.
+
+A complete list of bugs fixed in this version is available here:
+
+  http://savannah.gnu.org/bugs/index.php?group=make&report_id=111&fix_release_id=103
+
+
+Version 3.80 (03 Oct 2002)
+
+* A new feature exists: order-only prerequisites.  These prerequisites
+  affect the order in which targets are built, but they do not impact
+  the rebuild/no-rebuild decision of their dependents.  That is to say,
+  they allow you to require target B be built before target A, without
+  requiring that target A will always be rebuilt if target B is updated.
+  Patch for this feature provided by Greg McGary <greg@mcgary.org>.
+
+* For compatibility with SysV make, GNU make now supports the peculiar
+  syntax $$@, $$(@D), and $$(@F) in the prerequisites list of a rule.
+  This syntax is only valid within explicit and static pattern rules: it
+  cannot be used in implicit (suffix or pattern) rules.  Edouard G. Parmelan
+  <egp@free.fr> provided a patch implementing this feature; however, I
+  decided to implement it in a different way.
+
+* The argument to the "ifdef" conditional is now expanded before it's
+  tested, so it can be a constructed variable name.
+
+  Similarly, the arguments to "export" (when not used in a variable
+  definition context) and "unexport" are also now expanded.
+
+* A new function is defined: $(value ...).  The argument to this
+  function is the _name_ of a variable.  The result of the function is
+  the value of the variable, without having been expanded.
+
+* A new function is defined: $(eval ...).  The arguments to this
+  function should expand to makefile commands, which will then be
+  evaluated as if they had appeared in the makefile.  In combination
+  with define/endef multiline variable definitions this is an extremely
+  powerful capability.  The $(value ...) function is also sometimes
+  useful here.
+
+* A new built-in variable is defined, $(MAKEFILE_LIST).  It contains a
+  list of each makefile GNU make has read, or started to read, in the
+  order in which they were encountered.  So, the last filename in the
+  list when a makefile is just being read (before any includes) is the
+  name of the current makefile.
+
+* A new built-in variable is defined: $(.VARIABLES).  When it is
+  expanded it returns a complete list of variable names defined by all
+  makefiles at that moment.
+
+* A new command line option is defined, -B or --always-make.  If
+  specified GNU make will consider all targets out-of-date even if they
+  would otherwise not be.
+
+* The arguments to $(call ...) functions were being stored in $1, $2,
+  etc. as recursive variables, even though they are fully expanded
+  before assignment.  This means that escaped dollar signs ($$ etc.)
+  were not behaving properly.  Now the arguments are stored as simple
+  variables.  This may mean that if you added extra escaping to your
+  $(call ...) function arguments you will need to undo it now.
+
+* The variable invoked by $(call ...) can now be recursive: unlike other
+  variables it can reference itself and this will not produce an error
+  when it is used as the first argument to $(call ...) (but only then).
+
+* New pseudo-target .LOW_RESOLUTION_TIME, superseding the configure
+  option --disable-nsec-timestamps.  You might need this if your build
+  process depends on tools like "cp -p" preserving time stamps, since
+  "cp -p" (right now) doesn't preserve the subsecond portion of a time
+  stamp.
+
+* Updated translations for French, Galician, German, Japanese, Korean,
+  and Russian.  New translations for Croatian, Danish, Hebrew, and
+  Turkish.
+
+* Updated internationalization support to Gettext 0.11.5.
+  GNU make now uses Gettext's "external" feature, and does not include
+  any internationalization code itself.  Configure will search your
+  system for an existing implementation of GNU Gettext (only GNU Gettext
+  is acceptable) and use it if it exists.  If not, NLS will be disabled.
+  See ABOUT-NLS for more information.
+
+* Updated to autoconf 2.54 and automake 1.7.  Users should not be impacted.
+
+* VMS-specific changes:
+
+  * In default.c define variable ARCH as IA64 for VMS on Itanium systems.
+
+  * In makefile.vms avoid name collision for glob and globfree.
+
+  * This is the VMS port of GNU Make done by Hartmut.Becker@compaq.com.
+
+    It is based on the specific version 3.77k and on 3.78.1. 3.77k was done
+    by Klaus Kämpf <kkaempf@rmi.de>, the code was based on the VMS port of
+    GNU Make 3.60 by Mike Moretti.
+
+    It was ported on OpenVMS/Alpha V7.1, DECC V5.7-006. It was re-build and
+    tested on OpenVMS/Alpha V7.2, OpenVMS/VAX 7.1 and 5.5-2. Different
+    versions of DECC were used. VAXC was tried: it fails; but it doesn't
+    seem worth to get it working. There are still some PTRMISMATCH warnings
+    during the compile. Although perl is working on VMS the test scripts
+    don't work. The function $shell is still missing.
+
+    There is a known bug in some of the VMS CRTLs. It is in the shipped
+    versions of VMS V7.2 and V7.2-1 and in the currently (October 1999)
+    available ECOs for VMS V7.1 and newer versions. It is fixed in versions
+    shipped with newer VMS versions and all ECO kits after October 1999. It
+    only shows up during the daylight saving time period (DST): stat()
+    returns a modification time 1 hour ahead. This results in GNU make
+    warning messages. For a just created source you will see:
+
+     $ gmake x.exe
+     gmake.exe;1: *** Warning: File 'x.c' has modification time in the future
+     (940582863 > 940579269)
+     cc    /obj=x.obj x.c
+     link  x.obj    /exe=x.exe
+     gmake.exe;1: *** Warning:  Clock skew detected.  Your build may be
+     incomplete.
+
+
+A complete list of bugs fixed in this version is available here:
+
+  http://savannah.gnu.org/bugs/index.php?group=make&report_id=111&fix_release_id=102
+
+
+Version 3.79.1 (23 Jun 2000)
+
+* .SECONDARY with no prerequisites now prevents any target from being
+  removed because make thinks it's an intermediate file, not just those
+  listed in the makefile.
+
+* New configure option --disable-nsec-timestamps, but this was
+  superseded in later versions by the .LOW_RESOLUTION_TIME pseudo-target.
+
+Version 3.79 (04 Apr 2000)
+
+* GNU make optionally supports internationalization and locales via the
+  GNU gettext (or local gettext if suitable) package.  See the ABOUT-NLS
+  file for more information on configuring GNU make for NLS.
+
+* Previously, GNU make quoted variables such as MAKEFLAGS and
+  MAKEOVERRIDES for proper parsing by the shell.  This allowed them to
+  be used within make build scripts.  However, using them there is not
+  proper behavior: they are meant to be passed to subshells via the
+  environment.  Unfortunately the values were not quoted properly to be
+  passed through the environment.  This meant that make didn't properly
+  pass some types of command line values to submakes.
+
+  With this version we change that behavior: now these variables are
+  quoted properly for passing through the environment, which is the
+  correct way to do it.  If you previously used these variables
+  explicitly within a make rule you may need to re-examine your use for
+  correctness given this change.
+
+* A new pseudo-target .NOTPARALLEL is available.  If defined, the
+  current makefile is run serially regardless of the value of -j.
+  However, submakes are still eligible for parallel execution.
+
+* The --debug option has changed: it now allows optional flags
+  controlling the amount and type of debugging output.  By default only
+  a minimal amount information is generated, displaying the names of
+  "normal" targets (not makefiles) that were deemed out of date and in
+  need of being rebuilt.
+
+  Note that the -d option behaves as before: it takes no arguments and
+  all debugging information is generated.
+
+* The `-p' (print database) output now includes filename and linenumber
+  information for variable definitions, to aid debugging.
+
+* The wordlist function no longer reverses its arguments if the "start"
+  value is greater than the "end" value.  If that's true, nothing is
+  returned.
+
+* Hartmut Becker provided many updates for the VMS port of GNU make.
+  See the README.VMS file for more details.
+
+* VMS-specific changes:
+
+  * Fix a problem with automatically remaking makefiles. GNU make uses an
+    execve to restart itself after a successful remake of the makefile. On
+    UNIX systems execve replaces the running program with a new one and
+    resets all signal handling to the default. On VMS execve creates a child
+    process, signal and exit handlers of the parent are still active, and,
+    unfortunately, corrupt the exit code from the child. Fix in job.c:
+    ignore SIGCHLD.
+
+  * Added some switches to reflect latest features of DECC. Modifications in
+    makefile.vms.
+
+  * Set some definitions to reflect latest features of DECC. Modifications in
+    config.h-vms (which is copied to config.h).
+
+  * Added extern strcmpi declaration to avoid 'implicitly declared' messages.
+    Modification in make.h.
+
+  * Default rule for C++, conditionals for gcc (GCC_IS_NATIVE) or DEC/Digital/
+    Compaq c/c++ compilers. Modifications in default.c.
+
+  * Usage of opendir() and friends, suppress file version. Modifications in
+    dir.c.
+
+  * Added VMS specific code to handle ctrl+c and ctrl+y to abort make.
+    Modifications in job.c.
+
+  * Added support to have case sensitive targets and dependencies but to
+    still use case blind file names. This is especially useful for Java
+    makefiles on VMS:
+
+        .SUFFIXES :
+        .SUFFIXES : .class .java
+        .java.class :
+                javac "$<
+        HelloWorld.class :      HelloWorld.java
+
+  * A new macro WANT_CASE_SENSITIVE_TARGETS in config.h-vms was introduced.
+    It needs to be enabled to get this feature; default is disabled.  The
+    macro HAVE_CASE_INSENSITIVE_FS must not be touched: it is still enabled.
+    Modifications in file.c and config.h-vms.
+
+  * Bootstrap make to start building make is still makefile.com, but make
+    needs to be re-made with a make to make a correct version: ignore all
+    possible warnings, delete all objects, rename make.exe to a different
+    name and run it.
+
+  * Made some minor modifications to the bootstrap build makefile.com.
+
+Version 3.78 (22 Sep 1999)
+
+* Two new functions, $(error ...) and $(warning ...) are available.  The
+  former will cause make to fail and exit immediately upon expansion of
+  the function, with the text provided as the error message.  The latter
+  causes the text provided to be printed as a warning message, but make
+  proceeds normally.
+
+* A new function $(call ...) is available.  This allows users to create
+  their own parameterized macros and invoke them later.  Original
+  implementation of this function was provided by Han-Wen Nienhuys
+  <hanwen@cs.uu.nl>.
+
+* A new function $(if ...) is available.  It provides if-then-else
+  capabilities in a builtin function.  Original implementation of this
+  function was provided by Han-Wen Nienhuys <hanwen@cs.uu.nl>.
+
+* Make defines a new variable, .LIBPATTERNS.  This variable controls how
+  library dependency expansion (dependencies like ``-lfoo'') is performed.
+
+* Make accepts CRLF sequences as well as traditional LF, for
+  compatibility with makefiles created on other operating systems.
+
+* Make accepts a new option: -R, or --no-builtin-variables.  This option
+  disables the definition of the rule-specific builtin variables (CC,
+  LD, AR, etc.).  Specifying this option forces -r (--no-builtin-rules)
+  as well.
+
+* A "job server" feature, suggested by Howard Chu <hyc@highlandsun.com>.
+
+  On systems that support POSIX pipe(2) semantics, GNU make can now pass
+  -jN options to submakes rather than forcing them all to use -j1.  The
+  top make and all its sub-make processes use a pipe to communicate with
+  each other to ensure that no more than N jobs are started across all
+  makes.  To get the old behavior of -j back, you can configure make
+  with the --disable-job-server option.
+
+* The confusing term "dependency" has been replaced by the more accurate
+  and standard term "prerequisite", both in the manual and in all GNU make
+  output.
+
+* GNU make supports the "big archive" library format introduced in AIX 4.3.
+
+* GNU make supports large files on AIX, HP-UX, and IRIX.  These changes
+  were provided by Paul Eggert <eggert@twinsun.com>.  (Large file
+  support for Solaris and Linux was introduced in 3.77, but the
+  configuration had issues: these have also been resolved).
+
+* The Windows 95/98/NT (W32) version of GNU make now has native support
+  for the Cygnus Cygwin release B20.1 shell (bash).
+
+* The GNU make regression test suite, long available separately "under
+  the table", has been integrated into the release.  You can invoke it
+  by running "make check" in the distribution.  Note that it requires
+  Perl (either Perl 4 or Perl 5) to run.
+
+Version 3.77 (28 Jul 1998)
+
+* Implement BSD make's "?=" variable assignment operator.  The variable
+  is assigned the specified value only if that variable is not already
+  defined.
+
+* Make defines a new variable, "CURDIR", to contain the current working
+  directory (after the -C option, if any, has been processed).
+  Modifying this variable has no effect on the operation of make.
+
+* Make defines a new default RCS rule, for new-style master file
+  storage: ``% :: RCS/%'' (note no ``,v'' suffix).
+
+  Make defines new default rules for DOS-style C++ file naming
+  conventions, with ``.cpp'' suffixes.  All the same rules as for
+  ``.cc'' and ``.C'' suffixes are provided, along with LINK.cpp and
+  COMPILE.cpp macros (which default to the same value as LINK.cc and
+  COMPILE.cc).  Note CPPFLAGS is still C preprocessor flags!  You should
+  use CXXFLAGS to change C++ compiler flags.
+
+* A new feature, "target-specific variable values", has been added.
+  This is a large change so please see the appropriate sections of the
+  manual for full details.  Briefly, syntax like this:
+
+    TARGET: VARIABLE = VALUE
+
+  defines VARIABLE as VALUE within the context of TARGET.  This is
+  similar to SunOS make's "TARGET := VARIABLE = VALUE" feature.  Note
+  that the assignment may be of any type, not just recursive, and that
+  the override keyword is available.
+
+  COMPATIBILITY: This new syntax means that if you have any rules where
+  the first or second dependency has an equal sign (=) in its name,
+  you'll have to escape them with a backslash: "foo : bar\=baz".
+  Further, if you have any dependencies which already contain "\=",
+  you'll have to escape both of them: "foo : bar\\\=baz".
+
+* A new appendix listing the most common error and warning messages
+  generated by GNU make, with some explanation, has been added to the
+  GNU make User's Manual.
+
+* Updates to the GNU make Customs library support (see README.customs).
+
+* Updates to the Windows 95/NT port from Rob Tulloh (see README.W32),
+  and to the DOS port from Eli Zaretski (see README.DOS).
+
+* VMS-specific changes:
+
+  * This is the VMS port of GNU Make.
+    It is based on the VMS port of GNU Make 3.60 by Mike Moretti.
+    This port was done by Klaus Kämpf <kkaempf@rmi.de>
+
+  * There is first-level support available from proGIS Software, Germany.
+    Visit their web-site at http://www.progis.de to get information
+    about other vms software and forthcoming updates to gnu make.
+
+  * /bin/sh style I/O redirection is supported. You can now write lines like
+        mcr sys$disk:[]program.exe < input.txt > output.txt &> error.txt
+
+  * Makefile variables are looked up in the current environment. You can set
+    symbols or logicals in DCL and evaluate them in the Makefile via
+    $(<name-of-symbol-or-logical>).  Variables defined in the Makefile
+    override VMS symbols/logicals !
+
+  * Functions for file names are working now. See the GNU Make manual for
+    $(dir ...)  and $(wildcard ...).  Unix-style and VMS-style names are
+    supported as arguments.
+
+  * The default rules are set up for GNU C. Building an executable from a
+    single source file is as easy as 'make file.exe'.
+
+  * The variable $(ARCH) is predefined as ALPHA or VAX resp. Makefiles for
+    different VMS systems can now be written by checking $(ARCH) as in
+      ifeq ($(ARCH),ALPHA)
+        $(ECHO) "On the Alpha"
+      else
+        $(ECHO) "On the VAX"
+      endif
+
+  * Command lines of excessive length are correctly broken and written to a
+    batch file in sys$scratch for later execution. There's no limit to the
+    lengths of commands (and no need for .opt files :-) any more.
+
+  * Empty commands are handled correctly and don't end in a new DCL process.
+
+Version 3.76.1 (19 Sep 1997)
+
+* Small (but serious) bug fix.  Quick rollout to get into the GNU source CD.
+
+Version 3.76 (16 Sep 1997)
+
+* GNU make now uses automake to control Makefile.in generation.  This
+  should make it more consistent with the GNU standards.
+
+* VPATH functionality has been changed to incorporate the VPATH+ patch,
+  previously maintained by Paul Smith <psmith@baynetworks.com>.  See the
+  manual.
+
+* Make defines a new variable, `MAKECMDGOALS', to contain the goals that
+  were specified on the command line, if any.  Modifying this variable
+  has no effect on the operation of make.
+
+* A new function, `$(wordlist S,E,TEXT)', is available: it returns a
+  list of words from number S to number E (inclusive) of TEXT.
+
+* Instead of an error, detection of future modification times gives a
+  warning and continues.  The warning is repeated just before GNU make
+  exits, so it is less likely to be lost.
+
+* Fix the $(basename) and $(suffix) functions so they only operate on
+  the last filename, not the entire string:
+
+      Command              Old Result             New Result
+      -------              ----------             ----------
+    $(basename a.b)        a                      a
+    $(basename a.b/c)      a                      a.b/c
+    $(suffix a.b)          b                      b
+    $(suffix a.b/c)        b/c                    <empty>
+
+* The $(strip) function now removes newlines as well as TABs and spaces.
+
+* The $(shell) function now changes CRLF (\r\n) pairs to a space as well
+  as newlines (\n).
+
+* Updates to the Windows 95/NT port from Rob Tulloh (see README.W32).
+
+* Eli Zaretskii has updated the port to 32-bit protected mode on MSDOS
+  and MS-Windows, building with the DJGPP v2 port of GNU C/C++ compiler
+  and utilities.  See README.DOS for details, and direct all questions
+  concerning this port to Eli Zaretskii <eliz@is.elta.co.il> or DJ
+  Delorie <dj@delorie.com>.
+
+* VMS-specific changes:
+
+  * John W. Eaton has updated the VMS port to support libraries and VPATH.
+
+  * The cd command is supported if it's called as $(CD). This invokes
+    the 'builtin_cd' command which changes the directory.
+    Calling 'set def' doesn't do the trick, since a sub-shell is
+    spawned for this command, the directory is changed *in this sub-shell*
+    and the sub-shell ends.
+
+  * Libraries are not supported. They were in GNU Make 3.60 but somehow I
+    didn't care porting the code. If there is enough interest, I'll do it at
+    some later time.
+
+  * The variable $^ separates files with commas instead of spaces (It's the
+    natural thing to do for VMS).
+
+  * See defaults.c for VMS default suffixes and my definitions for default
+    rules and variables.
+
+  * The shell function is not implemented yet.
+
+  * Load average routines haven't been implemented for VMS yet.
+
+  * The default include directory for including other makefiles is
+    SYS$SYSROOT:[SYSLIB] (I don't remember why I didn't just use
+    SYS$LIBRARY: instead; maybe it wouldn't work that way).
+
+  * The default makefiles make looks for are: makefile.vms, gnumakefile,
+    makefile., and gnumakefile. .
+
+  * The stat() function and handling of time stamps in VMS is broken, so I
+    replaced it with a hack in vmsfunctions.c. I will provide a full rewrite
+    somewhere in the future. Be warned, the time resolution inside make is
+    less than what vms provides. This might be a problem on the faster Alphas.
+
+  * You can use a : in a filename only if you precede it with a backslash ('\').
+    E.g.- hobbes\:[bogas.files]
+
+  * Make ignores success, informational, or warning errors (-S-, -I-, or -W-).
+    But it will stop on -E- and -F- errors. (unless you do something
+    to override this in your makefile, or whatever).
+
+  * Remote stuff isn't implemented yet.
+
+  * Multiple line DCL commands, such as "if" statements, must be put inside
+    command files.  You can run a command file by using \@.
+
+Version 3.75 (27 Aug 1996)
+
+* The directory messages printed by `-w' and implicitly in sub-makes,
+  are now omitted if Make runs no commands and has no other messages to print.
+
+* Make now detects files that for whatever reason have modification times
+  in the future and gives an error.  Files with such impossible timestamps
+  can result from unsynchronized clocks, or archived distributions
+  containing bogus timestamps; they confuse Make's dependency engine
+  thoroughly.
+
+* The new directive `sinclude' is now recognized as another name for
+  `-include', for compatibility with some other Makes.
+
+* Aaron Digulla has contributed a port to AmigaDOS.  See README.Amiga for
+  details, and direct all Amiga-related questions to <digulla@fh-konstanz.de>.
+
+* Rob Tulloh of Tivoli Systems has contributed a port to Windows NT or 95.
+  See README.W32 for details, and direct all Windows-related questions to
+  <rob_tulloh@tivoli.com>.
+
+* VMS-specific changes:
+
+  * Lots of default settings are adapted for VMS. See default.c.
+
+  * Long command lines are now converted to command files.
+
+  * Comma (',') as a separator is now allowed. See makefile.vms for an example.
+
+Version 3.73 (05 Apr 1995)
+
+* Converted to use Autoconf version 2, so `configure' has some new options.
+  See INSTALL for details.
+
+* You can now send a SIGUSR1 signal to Make to toggle printing of debugging
+  output enabled by -d, at any time during the run.
+
+Version 3.72 (04 Nov 1994)
+
+* DJ Delorie has ported Make to MS-DOS using the GO32 extender.
+  He is maintaining the DOS port, not the GNU Make maintainer;
+  please direct bugs and questions for DOS to <djgpp@sun.soe.clarkson.edu>.
+  MS-DOS binaries are available for FTP from ftp.simtel.net in
+  /pub/simtelnet/gnu/djgpp/.
+
+* The `MAKEFLAGS' variable (in the environment or in a makefile) can now
+  contain variable definitions itself; these are treated just like
+  command line variable definitions.  Make will automatically insert any
+  variable definitions from the environment value of `MAKEFLAGS' or from
+  the command line, into the `MAKEFLAGS' value exported to children.  The
+  `MAKEOVERRIDES' variable previously included in the value of `$(MAKE)'
+  for sub-makes is now included in `MAKEFLAGS' instead.  As before, you can
+  reset `MAKEOVERRIDES' in your makefile to avoid putting all the variables
+  in the environment when its size is limited.
+
+* If `.DELETE_ON_ERROR' appears as a target, Make will delete the target of
+  a rule if it has changed when its recipe exits with a nonzero status,
+  just as when the recipe gets a signal.
+
+* The automatic variable `$+' is new.  It lists all the dependencies like
+  `$^', but preserves duplicates listed in the makefile.  This is useful
+  for linking rules, where library files sometimes need to be listed twice
+  in the link order.
+
+* You can now specify the `.IGNORE' and `.SILENT' special targets with
+  dependencies to limit their effects to those files.  If a file appears as
+  a dependency of `.IGNORE', then errors will be ignored while running the
+  recipe to update that file.  Likewise if a file appears as a dependency
+  of `.SILENT', then the recipe to update that file will not be printed
+  before it is run.  (This change was made to conform to POSIX.2.)
+
+Version 3.71 (21 May 1994)
+
+* The automatic variables `$(@D)', `$(%D)', `$(*D)', `$(<D)', `$(?D)', and
+  `$(^D)' now omit the trailing slash from the directory name.  (This change
+  was made to comply with POSIX.2.)
+
+* The source distribution now includes the Info files for the Make manual.
+  There is no longer a separate distribution containing Info and DVI files.
+
+* You can now set the variables `binprefix' and/or `manprefix' in
+  Makefile.in (or on the command line when installing) to install GNU make
+  under a name other than `make' (i.e., ``make binprefix=g install''
+  installs GNU make as `gmake').
+
+* The built-in Texinfo rules use the new variables `TEXI2DVI_FLAGS' for
+  flags to the `texi2dvi' script, and `MAKEINFO_FLAGS' for flags to the
+  Makeinfo program.
+
+* The exit status of Make when it runs into errors is now 2 instead of 1.
+  The exit status is 1 only when using -q and some target is not up to date.
+  (This change was made to comply with POSIX.2.)
+
+Version 3.70 (03 Jan 1994)
+
+* It is no longer a fatal error to have a NUL character in a makefile.
+  You should never put a NUL in a makefile because it can have strange
+  results, but otherwise empty lines full of NULs (such as produced by
+  the `xmkmf' program) will always work fine.
+
+* The error messages for nonexistent included makefiles now refer to the
+  makefile name and line number where the `include' appeared, so Emacs's
+  C-x ` command takes you there (in case it's a typo you need to fix).
+
+Version 3.69 (07 Nov 1993)
+
+* Implicit rule search for archive member references is now done in the
+  opposite order from previous versions: the whole target name `LIB(MEM)'
+  first, and just the member name and parentheses `(MEM)' second.
+
+* Make now gives an error for an unterminated variable or function reference.
+  For example, `$(foo' with no matching `)' or `${bar' with no matching `}'.
+
+* The new default variable `MAKE_VERSION' gives the version number of
+  Make, and a string describing the remote job support compiled in (if any).
+  Thus the value (in this release) is something like `3.69' or `3.69-Customs'.
+
+* Commands in an invocation of the `shell' function are no longer run
+  with a modified environment like recipes are.  As in versions before
+  3.68, they now run with the environment that `make' started with.  We
+  have reversed the change made in version 3.68 because it turned out to
+  cause a paradoxical situation in cases like:
+
+        export variable = $(shell echo value)
+
+  When Make attempted to put this variable in the environment for a
+  recipe, it would try expand the value by running the shell command
+  `echo value'.  In version 3.68, because it constructed an environment
+  for that shell command in the same way, Make would begin to go into an
+  infinite loop and then get a fatal error when it detected the loop.
+
+* The recipe given for `.DEFAULT' is now used for phony targets with no
+  recipe.
+
+Version 3.68 (28 Jul 1993)
+
+* You can list several archive member names inside parenthesis:
+  `lib(mem1 mem2 mem3)' is equivalent to `lib(mem1) lib(mem2) lib(mem3)'.
+
+* You can use wildcards inside archive member references.  For example,
+  `lib(*.o)' expands to all existing members of `lib' whose names end in
+  `.o' (e.g. `lib(a.o) lib(b.o)'); `*.a(*.o)' expands to all such members
+  of all existing files whose names end in `.a' (e.g. `foo.a(a.o)
+  foo.a(b.o) bar.a(c.o) bar.a(d.o)'.
+
+* A suffix rule `.X.a' now produces two pattern rules:
+        (%.o): %.X	# Previous versions produced only this.
+        %.a: %.X	# Now produces this as well, just like other suffixes.
+
+* The new flag `--warn-undefined-variables' says to issue a warning message
+  whenever Make expands a reference to an undefined variable.
+
+* The new `-include' directive is just like `include' except that there is
+  no error (not even a warning) for a nonexistent makefile.
+
+* Commands in an invocation of the `shell' function are now run with a
+  modified environment like recipes are, so you can use `export' et al
+  to set up variables for them.  They used to run with the environment
+  that `make' started with.
+
+Version 3.66 (21 May 1993)
+
+* `make --version' (or `make -v') now exits immediately after printing
+  the version number.
+
+Version 3.65 (09 May 1993)
+
+* Make now supports long-named members in `ar' archive files.
+
+Version 3.64 (21 Apr 1993)
+
+* Make now supports the `+=' syntax for a variable definition which appends
+  to the variable's previous value.  See the section `Appending More Text
+  to Variables' in the manual for full details.
+
+* The new option `--no-print-directory' inhibits the `-w' or
+  `--print-directory' feature.  Make turns on `--print-directory'
+  automatically if you use `-C' or `--directory', and in sub-makes; some
+  users have found this behavior undesirable.
+
+* The built-in implicit rules now support the alternative extension
+  `.txinfo' for Texinfo files, just like `.texinfo' and `.texi'.
+
+Version 3.63 (22 Jan 1993)
+
+* Make now uses a standard GNU `configure' script.  See the new file
+  INSTALL for the new (and much simpler) installation procedure.
+
+* There is now a shell script to build Make the first time, if you have no
+  other `make' program.  `build.sh' is created by `configure'; see README.
+
+* GNU Make now completely conforms to the POSIX.2 specification for `make'.
+
+* Elements of the `$^' and `$?' automatic variables that are archive
+  member references now list only the member name, as in Unix and POSIX.2.
+
+* You should no longer ever need to specify the `-w' switch, which prints
+  the current directory before and after Make runs.  The `-C' switch to
+  change directory, and recursive use of Make, now set `-w' automatically.
+
+* Multiple double-colon rules for the same target will no longer have their
+  recipes run simultaneously under -j, as this could result in the two
+  recipes trying to change the file at the same time and interfering with
+  one another.
+
+* The `SHELL' variable is now never taken from the environment.
+  Each makefile that wants a shell other than the default (/bin/sh) must
+  set SHELL itself.  SHELL is always exported to child processes.
+  This change was made for compatibility with POSIX.2.
+
+* Make now accepts long options.  There is now an informative usage message
+  that tells you what all the options are and what they do.  Try `make --help'.
+
+* There are two new directives: `export' and `unexport'.  All variables are
+  no longer automatically put into the environments of the recipe lines that
+  Make runs.  Instead, only variables specified on the command line or in
+  the environment are exported by default.  To export others, use:
+        export VARIABLE
+  or you can define variables with:
+        export VARIABLE = VALUE
+  or:
+        export VARIABLE := VALUE
+  You can use just:
+        export
+  or:
+        .EXPORT_ALL_VARIABLES:
+  to get the old behavior.  See the node `Variables/Recursion' in the manual
+  for a full description.
+
+* The recipe from the `.DEFAULT' special target is only applied to
+  targets which have no rules at all, not all targets with no recipe.
+  This change was made for compatibility with Unix make.
+
+* All fatal error messages now contain `***', so they are easy to find in
+  compilation logs.
+
+* Dependency file names like `-lNAME' are now replaced with the actual file
+  name found, as with files found by normal directory search (VPATH).
+  The library file `libNAME.a' may now be found in the current directory,
+  which is checked before VPATH; the standard set of directories (/lib,
+  /usr/lib, /usr/local/lib) is now checked last.
+  See the node `Libraries/Search' in the manual for full details.
+
+* A single `include' directive can now specify more than one makefile to
+  include, like this:
+        include file1 file2
+  You can also use shell file name patterns in an `include' directive:
+        include *.mk
+
+* The default directories to search for included makefiles, and for
+  libraries specified with `-lNAME', are now set by configuration.
+
+* You can now use blanks as well as colons to separate the directories in a
+  search path for the `vpath' directive or the `VPATH' variable.
+
+* You can now use variables and functions in the left hand side of a
+  variable assignment, as in "$(foo)bar = value".
+
+* The `MAKE' variable is always defined as `$(MAKE_COMMAND) $(MAKEOVERRIDES)'.
+  The `MAKE_COMMAND' variable is now defined to the name with which make
+  was invoked.
+
+* The built-in rules for C++ compilation now use the variables `$(CXX)' and
+  `$(CXXFLAGS)' instead of `$(C++)' and `$(C++FLAGS)'.  The old names had
+  problems with shells that cannot have `+' in environment variable names.
+
+* The value of a recursively expanded variable is now expanded when putting
+  it into the environment for child processes.  This change was made for
+  compatibility with Unix make.
+
+* A rule with no targets before the `:' is now accepted and ignored.
+  This change was made for compatibility with SunOS 4 make.
+  We do not recommend that you write your makefiles to take advantage of this.
+
+* The `-I' switch can now be used in MAKEFLAGS, and are put there
+  automatically just like other switches.
+
+Version 3.61
+
+* Built-in rules for C++ source files with the `.C' suffix.
+  We still recommend that you use `.cc' instead.
+
+* If a recipe is given too many times for a single target, the last one
+  given is used, and a warning message is printed.
+
+* Error messages about makefiles are in standard GNU error format,
+  so C-x ` in Emacs works on them.
+
+* Dependencies of pattern rules which contain no % need not actually exist
+  if they can be created (just like dependencies which do have a %).
+
+Version 3.60
+
+* A message is always printed when Make decides there is nothing to be done.
+  It used to be that no message was printed for top-level phony targets
+  (because "`phony' is up to date" isn't quite right).  Now a different
+  message "Nothing to be done for `phony'" is printed in that case.
+
+* Archives on AIX now supposedly work.
+
+* When the recipes specified for .DEFAULT are used to update a target,
+  the $< automatic variable is given the same value as $@ for that target.
+  This is how Unix make behaves, and this behavior is mandated by POSIX.2.
+
+Version 3.59
+
+* The -n, -q, and -t options are not put in the `MAKEFLAGS' and `MFLAG'
+  variables while remaking makefiles, so recursive makes done while remaking
+  makefiles will behave properly.
+
+* If the special target `.NOEXPORT' is specified in a makefile,
+  only variables that came from the environment and variables
+  defined on the command line are exported.
+
+Version 3.58
+
+* Suffix rules may have dependencies (which are ignored).
+
+Version 3.57
+
+* Dependencies of the form `-lLIB' are searched for as /usr/local/lib/libLIB.a
+  as well as libLIB.a in /usr/lib, /lib, the current directory, and VPATH.
+
+Version 3.55
+
+* There is now a Unix man page for GNU Make.  It is certainly not a
+  replacement for the Texinfo manual, but it documents the basic
+  functionality and the switches.  For full documentation, you should
+  still read the Texinfo manual.  Thanks to Dennis Morse of Stanford
+  University for contributing the initial version of this.
+
+* Variables which are defined by default (e.g., `CC') will no longer be
+  put into the environment for child processes.  (If these variables are
+  reset by the environment, makefiles, or the command line, they will
+  still go into the environment.)
+
+* Makefiles which have recipes but no dependencies (and thus are always
+  considered out of date and in need of remaking), will not be remade (if they
+  were being remade only because they were makefiles).  This means that GNU
+  Make will no longer go into an infinite loop when fed the makefiles that
+  `imake' (necessary to build X Windows) produces.
+
+* There is no longer a warning for using the `vpath' directive with an explicit
+pathname (instead of a `%' pattern).
+
+Version 3.51
+
+* When removing intermediate files, only one `rm' command line is printed,
+  listing all file names.
+
+* There are now automatic variables `$(^D)', `$(^F)', `$(?D)', and `$(?F)'.
+  These are the directory-only and file-only versions of `$^' and `$?'.
+
+* Library dependencies given as `-lNAME' will use "libNAME.a" in the current
+  directory if it exists.
+
+* The automatic variable `$($/)' is no longer defined.
+
+* Leading `+' characters on a recipe line make that line be executed even
+  under -n, -t, or -q (as if the line contained `$(MAKE)').
+
+* For recipe lines containing `$(MAKE)', `${MAKE}', or leading `+' characters,
+  only those lines are executed, not the entire recipe.
+  (This is how Unix make behaves for lines containing `$(MAKE)' or `${MAKE}'.)
+
+Version 3.50
+
+* Filenames in rules will now have ~ and ~USER expanded.
+
+* The `-p' output has been changed so it can be used as a makefile.
+  (All information that isn't specified by makefiles is prefaced with comment
+  characters.)
+
+Version 3.49
+
+* The % character can be quoted with backslash in implicit pattern rules,
+  static pattern rules, `vpath' directives, and `patsubst', `filter', and
+  `filter-out' functions.  A warning is issued if a `vpath' directive's
+  pattern contains no %.
+
+* The `wildcard' variable expansion function now expands ~ and ~USER.
+
+* Messages indicating failed recipe lines now contain the target name:
+        make: *** [target] Error 1
+
+* The `-p' output format has been changed somewhat to look more like
+  makefile rules and to give all information that Make has about files.
+
+Version 3.48
+
+Version 3.47
+
+* The `-l' switch with no argument removes any previous load-average limit.
+
+* When the `-w' switch is in effect, and Make has updated makefiles,
+  it will write a `Leaving directory' message before re-executing itself.
+  This makes the `directory change tracking' changes to Emacs's compilation
+  commands work properly.
+
+Version 3.46
+
+* The automatic variable `$*' is now defined for explicit rules,
+  as it is in Unix make.
+
+Version 3.45
+
+* The `-j' switch is now put in the MAKEFLAGS and MFLAGS variables when
+  specified without an argument (indicating infinite jobs).
+  The `-l' switch is not always put in the MAKEFLAGS and MFLAGS variables.
+
+* Make no longer checks hashed directories after running recipes.
+  The behavior implemented in 3.41 caused too much slowdown.
+
+Version 3.44
+
+* A dependency is NOT considered newer than its dependent if
+  they have the same modification time.  The behavior implemented
+  in 3.43 conflicts with RCS.
+
+Version 3.43
+
+* Dependency loops are no longer fatal errors.
+
+* A dependency is considered newer than its dependent if
+  they have the same modification time.
+
+Version 3.42
+
+* The variables F77 and F77FLAGS are now set by default to $(FC) and
+  $(FFLAGS).  Makefiles designed for System V make may use these variables in
+  explicit rules and expect them to be set.  Unfortunately, there is no way to
+  make setting these affect the Fortran implicit rules unless FC and FFLAGS
+  are not used (and these are used by BSD make).
+
+Version 3.41
+
+* Make now checks to see if its hashed directories are changed by recipes.
+  Other makes that hash directories (Sun, 4.3 BSD) don't do this.
+
+Version 3.39
+
+* The `shell' function no longer captures standard error output.
+
+Version 3.32
+
+* A file beginning with a dot can be the default target if it also contains
+  a slash (e.g., `../bin/foo').  (Unix make allows this as well.)
+
+Version 3.31
+
+* Archive member names are truncated to 15 characters.
+
+* Yet more USG stuff.
+
+* Minimal support for Microport System V (a 16-bit machine and a
+  brain-damaged compiler).  This has even lower priority than other USG
+  support, so if it gets beyond trivial, I will take it out completely.
+
+* Revamped default implicit rules (not much visible change).
+
+* The -d and -p options can come from the environment.
+
+Version 3.30
+
+* Improved support for USG and HPUX (hopefully).
+
+* A variable reference like `$(foo:a=b)', if `a' contains a `%', is
+  equivalent to `$(patsubst a,b,$(foo))'.
+
+* Defining .DEFAULT with no deps or recipe clears its recipe.
+
+* New default implicit rules for .S (cpp, then as), and .sh (copy and
+  make executable).  All default implicit rules that use cpp (even
+  indirectly), use $(CPPFLAGS).
+
+Version 3.29
+
+* Giving the -j option with no arguments gives you infinite jobs.
+
+Version 3.28
+
+* New option: "-l LOAD" says not to start any new jobs while others are
+  running if the load average is not below LOAD (a floating-point number).
+
+* There is support in place for implementations of remote command execution
+  in Make.  See the file remote.c.
+
+Version 3.26
+
+* No more than 10 directories will be kept open at once.
+  (This number can be changed by redefining MAX_OPEN_DIRECTORIES in dir.c.)
+
+Version 3.25
+
+* Archive files will have their modification times recorded before doing
+  anything that might change their modification times by updating an archive
+  member.
+
+Version 3.20
+
+* The `MAKELEVEL' variable is defined for use by makefiles.
+
+Version 3.19
+
+* The recursion level indications in error messages are much shorter than
+  they were in version 3.14.
+
+Version 3.18
+
+* Leading spaces before directives are ignored (as documented).
+
+* Included makefiles can determine the default goal target.
+  (System V Make does it this way, so we are being compatible).
+
+Version 3.14.
+
+* Variables that are defaults built into Make will not be put in the
+  environment for children.  This just saves some environment space and,
+  except under -e, will be transparent to sub-makes.
+
+* Error messages from sub-makes will indicate the level of recursion.
+
+* Hopefully some speed-up for large directories due to a change in the
+  directory hashing scheme.
+
+* One child will always get a standard input that is usable.
+
+* Default makefiles that don't exist will be remade and read in.
+
+Version 3.13.
+
+* Count parentheses inside expansion function calls so you can
+  have nested calls: `$(sort $(foreach x,a b,$(x)))'.
+
+Version 3.12.
+
+* Several bug fixes, including USG and Sun386i support.
+
+* `shell' function to expand shell commands a la `
+
+* If the `-d' flag is given, version information will be printed.
+
+* The `-c' option has been renamed to `-C' for compatibility with tar.
+
+* The `-p' option no longer inhibits other normal operation.
+
+* Makefiles will be updated and re-read if necessary.
+
+* Can now run several recipes at once (parallelism), -j option.
+
+* Error messages will contain the level of Make recursion, if any.
+
+* The `MAKEFLAGS' and `MFLAGS' variables will be scanned for options after
+  makefiles are read.
+
+* A double-colon rule with no dependencies will always have its recipe run.
+  (This is how both the BSD and System V versions of Make do it.)
+
+Version 3.05
+
+(Changes from versions 1 through 3.05 were never recorded.  Sorry.)
+
+-------------------------------------------------------------------------------
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/NMakefile.template b/src/kmk/NMakefile.template
new file mode 100644
index 0000000..2007a3b
--- /dev/null
+++ b/src/kmk/NMakefile.template
@@ -0,0 +1,132 @@
+# -*-Makefile-*- to build GNU make with nmake
+#
+# NOTE: If you have no 'make' program at all to process this makefile,
+# run 'build_w32.bat' instead.
+#
+# Copyright (C) 1996-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+LINK = link
+CC = cl
+MAKE = nmake
+
+OUTDIR=.
+MAKEFILE=NMakefile
+SUBPROC_MAKEFILE=NMakefile
+
+CFLAGS_any = /nologo /MT /W4 /GX /Zi /YX /I . /I glob /I w32/include /D WIN32 /D WINDOWS32 /D _CONSOLE /D HAVE_CONFIG_H
+CFLAGS_debug = $(CFLAGS_any) /Od /D DEBUG /D _DEBUG /FR.\WinDebug/ /Fp.\WinDebug/make.pch /Fo.\WinDebug/ /Fd.\WinDebug/make.pdb
+CFLAGS_release = $(CFLAGS_any) /O2 /D NDEBUG /FR.\WinRel/ /Fp.\WinRel/make.pch /Fo.\WinRel/
+
+LDFLAGS_debug = w32\subproc\WinDebug\subproc.lib /NOLOGO /SUBSYSTEM:console\
+	/STACK:0x400000 /INCREMENTAL:no /PDB:WinDebug/make.pdb /OUT:WinDebug/make.exe /DEBUG
+LDFLAGS_release = w32\subproc\WinRel\subproc.lib /NOLOGO /SUBSYSTEM:console\
+	/STACK:0x400000 /INCREMENTAL:no /OUT:WinRel/make.exe
+
+all: config.h subproc Release Debug
+
+#
+# Make sure we build the subproc library first. It has it's own
+# makefile. To be portable to Windows 95, we put the instructions
+# on how to build the library into a batch file. On NT, we could
+# simply have done foo && bar && dog, but this doesn't port.
+#
+subproc: w32/subproc/WinDebug/subproc.lib w32/subproc/WinRel/subproc.lib
+
+w32/subproc/WinDebug/subproc.lib w32/subproc/WinRel/subproc.lib: w32/subproc/misc.c w32/subproc/sub_proc.c w32/subproc/w32err.c
+	subproc.bat $(SUBPROC_MAKEFILE) $(MAKE)
+	if exist WinDebug\make.exe erase WinDebug\make.exe
+	if exist WinRel\make.exe erase WinRel\make.exe
+
+config.h: config.h.W32
+	copy $? $@
+
+Release:
+	$(MAKE) /f $(MAKEFILE) LDFLAGS="$(LDFLAGS_release)" CFLAGS="$(CFLAGS_release)" OUTDIR=WinRel WinRel/make.exe
+Debug:
+	$(MAKE) /f $(MAKEFILE) LDFLAGS="$(LDFLAGS_debug)" CFLAGS="$(CFLAGS_debug)" OUTDIR=WinDebug WinDebug/make.exe
+
+clean:
+	if exist WinDebug\nul rmdir /s /q WinDebug
+	if exist WinRel\nul rmdir /s /q WinRel
+	if exist w32\subproc\WinDebug\nul rmdir /s /q w32\subproc\WinDebug
+	if exist w32\subproc\WinRel\nul rmdir /s /q w32\subproc\WinRel
+	if exist config.h erase config.h
+	erase *.pdb
+
+$(OUTDIR):
+	if not exist .\$@\nul mkdir .\$@
+
+LIBS = kernel32.lib user32.lib advapi32.lib
+
+guile = $(OUTDIR)/guile.obj
+
+OBJS = \
+	$(OUTDIR)/ar.obj \
+	$(OUTDIR)/arscan.obj \
+	$(OUTDIR)/commands.obj \
+	$(OUTDIR)/default.obj \
+	$(OUTDIR)/dir.obj \
+	$(OUTDIR)/expand.obj \
+	$(OUTDIR)/file.obj \
+	$(OUTDIR)/function.obj \
+	$(OUTDIR)/getloadavg.obj \
+	$(OUTDIR)/getopt.obj \
+	$(OUTDIR)/getopt1.obj \
+	$(OUTDIR)/hash.obj \
+	$(OUTDIR)/implicit.obj \
+	$(OUTDIR)/job.obj \
+	$(OUTDIR)/load.obj \
+	$(OUTDIR)/main.obj \
+	$(OUTDIR)/misc.obj \
+	$(OUTDIR)/output.obj \
+	$(OUTDIR)/read.obj \
+	$(OUTDIR)/remake.obj \
+	$(OUTDIR)/remote-stub.obj \
+	$(OUTDIR)/rule.obj \
+	$(OUTDIR)/signame.obj \
+	$(OUTDIR)/strcache.obj \
+	$(OUTDIR)/variable.obj \
+	$(OUTDIR)/version.obj \
+	$(OUTDIR)/vpath.obj \
+	$(OUTDIR)/glob.obj \
+	$(OUTDIR)/fnmatch.obj \
+	$(OUTDIR)/dirent.obj \
+	$(OUTDIR)/pathstuff.obj \
+	$(OUTDIR)/posixfcn.obj \
+	$(OUTDIR)/w32os.obj \
+	$(guile)
+
+$(OUTDIR)/make.exe: $(OUTDIR) $(OBJS)
+	$(LINK) @<<
+		$(LDFLAGS) $(LIBS) $(OBJS)
+<<
+
+.c{$(OUTDIR)}.obj:
+	$(CC) $(CFLAGS) /c $<
+
+$(OUTDIR)/glob.obj : glob/glob.c
+	$(CC) $(CFLAGS) /c $?
+$(OUTDIR)/fnmatch.obj : glob/fnmatch.c
+	$(CC) $(CFLAGS) /c $?
+$(OUTDIR)/dirent.obj : w32/compat/dirent.c
+	$(CC) $(CFLAGS) /c $?
+$(OUTDIR)/posixfcn.obj : w32/compat/posixfcn.c
+	$(CC) $(CFLAGS) /c $?
+$(OUTDIR)/pathstuff.obj : w32/pathstuff.c
+	$(CC) $(CFLAGS) /c $?
+$(OUTDIR)/w32os.obj : w32/w32os.c
+	$(CC) $(CFLAGS) /c $?
diff --git a/src/kmk/README.Amiga b/src/kmk/README.Amiga
new file mode 100644
index 0000000..68d3ea7
--- /dev/null
+++ b/src/kmk/README.Amiga
@@ -0,0 +1,77 @@
+Short: Port of GNU make with SAS/C (no ixemul.library required)
+Author: GNU, Amiga port by Aaron "Optimizer" Digulla
+Uploader: Aaron "Optimizer" Digulla (digulla@fh-konstanz.de)
+Type: dev/c
+
+This is a pure Amiga port of GNU make. It needs no extra libraries or
+anything. It has the following features (in addition to any features of
+GNU make):
+
+- Runs Amiga-Commands with SystemTags() (Execute)
+- Can run multi-line statements
+- Allows to use Device-Names in targets:
+
+        c:make : make.o
+
+    is ok. To distinguish between device-names and target : or ::, MAKE
+    looks for spaces. If there are any around :, it's taken as a target
+    delimiter, if there are none, it's taken as the name of a device. Note
+    that "make:make.o" tries to create "make.o" on the device "make:".
+- Replaces @@ by a newline in any command line:
+
+        if exists make @@\
+            delete make.bak quiet @@\
+            rename make make.bak @@\
+        endif @@\
+        $(CC) Link Make.o To make
+
+    works. Note that the @@ must stand alone (i.e., "make@@\" is illegal).
+    Also be careful that there is a space after the "\" (i.e., at the
+    beginning of the next line).
+- Can be made resident to save space and time
+- Amiga specific wildcards can be used in $(wildcard ...)
+
+BUGS:
+- The line
+
+    dummy.h : src/*.c
+
+tries to make dummy.h from "src/*.c" (i.e., no wildcard-expansion takes
+place). You have to use "$(wildcard src/*.c)" instead.
+
+COMPILING FROM SCRATCH
+----------------------
+
+To recompile, you need SAS/C 6.51. make itself is not necessary, there
+is an smakefile.
+
+1. Copy config.ami to config.h
+2. If you use make to compile, copy Makefile.ami to Makefile and
+    glob/Makefile.ami to glob/Makefile. Copy make into the current
+    directory.
+
+3. Run smake/make
+
+INSTALLATION
+
+Copy make somewhere in your search path (e.g., sc:c or sc:bin).
+If you plan to use recursive makes, install make resident:
+
+    Resident make Add
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1995-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/README.DOS.template b/src/kmk/README.DOS.template
new file mode 100644
index 0000000..bc31adb
--- /dev/null
+++ b/src/kmk/README.DOS.template
@@ -0,0 +1,340 @@
+Port of GNU Make to 32-bit protected mode on MSDOS and MS-Windows.
+
+Builds with DJGPP v2 port of GNU C/C++ compiler and utilities.
+
+
+New (since 3.74) DOS-specific features:
+
+   1. Supports long filenames when run from DOS box on Windows 9x.
+
+   2. Supports both stock DOS COMMAND.COM and Unix-style shells
+      (details in 'Notes' below).
+
+   3. Supports DOS drive letters in dependencies and pattern rules.
+
+   4. Better support for DOS-style backslashes in pathnames (but see
+      'Notes' below).
+
+   5. The $(shell) built-in can run arbitrary complex commands,
+      including pipes and redirection, even when COMMAND.COM is your
+      shell.
+
+   6. Can be built without floating-point code (see below).
+
+   7. Supports signals in child programs and restores the original
+      directory if the child was interrupted.
+
+   8. Can be built without (a previous version of) Make.
+
+   9. The build process requires only standard tools.  (Optional
+      targets like "install:" and "clean:" still need additional
+      programs, though, see below.)
+
+  10. Beginning with v3.78, the test suite works in the DJGPP
+      environment (requires Perl and auxiliary tools; see below).
+
+
+To install a binary distribution:
+
+   Simply unzip the makNNNb.zip file (where NNN is the version number)
+   preserving the directory structure (-d switch if you use PKUNZIP).
+   If you are installing Make on Windows 9X or Windows 2000, use an
+   unzip program that supports long filenames in zip files.  After
+   unzipping, make sure the directory with make.exe is on your PATH,
+   and that's all you need to use Make.
+
+
+To build from sources:
+
+   1. Unzip the archive, preserving the directory structure (-d switch
+      if you use PKUNZIP).  If you build Make on Windows 9X or Windows
+      2000, use an unzip program that supports long filenames in zip
+      files.
+
+      If you are unpacking an official GNU source distribution, use
+      either DJTAR (which is part of the DJGPP development
+      environment), or the DJGPP port of GNU Tar.
+
+   2. Invoke the 'configure.bat' batch file.
+
+      If you are building Make in-place, i.e. in the same directory
+      where its sources are kept, just type "configure.bat" and press
+      [Enter].  Otherwise, you need to supply the path to the source
+      directory as an argument to the batch file, like this:
+
+        c:\djgpp\gnu\make-%VERSION%\configure.bat c:/djgpp/gnu/make-%VERSION%
+
+      Note the forward slashes in the source path argument: you MUST
+      use them here.
+
+   3. If configure.bat doesn't find a working Make, it will suggest to
+      use the 'dosbuild.bat' batch file to build Make.  Either do as it
+      suggests or install another Make program (a pre-compiled binary
+      should be available from the usual DJGPP sites) and rerun
+      configure.bat.
+
+   4. If you will need to run Make on machines without an FPU, you
+      might consider building a version of Make which doesn't issue
+      floating-point instructions (they don't help much on MSDOS
+      anyway).  To this end, edit the Makefile created by
+      configure.bat and add -DNO_FLOAT to the value of CPPFLAGS.
+
+   5. Invoke Make.
+
+      If you are building from outside of the source directory, you
+      need to tell Make where the sources are, like this:
+
+                make srcdir=c:/djgpp/gnu/make-%VERSION%
+
+      (configure.bat will tell you this when it finishes).  You MUST
+      use a full, not relative, name of the source directory here, or
+      else Make might fail.
+
+   6. After Make finishes, if you have a Unix-style shell installed,
+      you can use the 'install' target to install the package.  You
+      will also need GNU Fileutils and GNU Sed for this (they should
+      be available from the DJGPP sites).
+
+      By default, GNU make will install into your DJGPP installation
+      area.  If you wish to use a different directory, override the
+      DESTDIR variable when invoking "make install", like this:
+
+                make install DESTDIR=c:/other/dir
+
+      This causes the make executable to be placed in c:/other/dir/bin,
+      the man pages in c:/other/dir/man, etc.
+
+      Without a Unix-style shell, you will have to install programs
+      and the docs manually.  Copy make.exe to a directory on your
+      PATH, make.i* info files to your Info directory, and update the
+      file 'dir' in your Info directory by adding the following item
+      to the main menu:
+
+        * Make: (make.info).           The GNU make utility.
+
+      If you have the 'install-info' program (from the GNU Texinfo
+      package), it will do that for you if you invoke it like this:
+
+        install-info --info-dir=c:/djgpp/info c:/djgpp/info/make.info
+
+      (If your Info directory is other than C:\DJGPP\INFO, change this
+      command accordingly.)
+
+   7. The 'clean' targets also require Unix-style shell, and GNU Sed
+      and 'rm' programs (the latter from Fileutils).
+
+   8. To run the test suite, type "make check".  This requires a Unix
+      shell (I used the DJGPP port of Bash 2.03), Perl, Sed, Fileutils
+      and Sh-utils.
+
+
+Notes:
+-----
+
+   1. The shell issue.
+
+      This is probably the most significant improvement, first
+      introduced in the port of GNU Make 3.75.
+
+      The original behavior of GNU Make is to invoke commands
+      directly, as long as they don't include characters special to
+      the shell or internal shell commands, because that is faster.
+      When shell features like redirection or filename wildcards are
+      involved, Make calls the shell.
+
+      This port supports both DOS shells (the stock COMMAND.COM and its
+      4DOS/NDOS replacements), and Unix-style shells (tested with the
+      venerable Stewartson's 'ms_sh' 2.3 and the DJGPP port of 'bash' by
+      Daisuke Aoyama <jack@st.rim.or.jp>).
+
+      When the $SHELL variable points to a Unix-style shell, Make
+      works just like you'd expect on Unix, calling the shell for any
+      command that involves characters special to the shell or
+      internal shell commands.  The only difference is that, since
+      there is no standard way to pass command lines longer than the
+      infamous DOS 126-character limit, this port of Make writes the
+      command line to a temporary disk file and then invokes the shell
+      on that file.
+
+      If $SHELL points to a DOS-style shell, however, Make will not
+      call it automatically, as it does with Unix shells.  Stock
+      COMMAND.COM is too dumb and would unnecessarily limit the
+      functionality of Make.  For example, you would not be able to
+      use long command lines in commands that use redirection or
+      pipes.  Therefore, when presented with a DOS shell, this port of
+      Make will emulate most of the shell functionality, like
+      redirection and pipes, and shall only call the shell when a
+      batch file or a command internal to the shell is invoked.  (Even
+      when a command is an internal shell command, Make will first
+      search the $PATH for it, so that if a Makefile calls 'mkdir',
+      you can install, say, a port of GNU 'mkdir' and have it called
+      in that case.)
+
+      The key to all this is the extended functionality of 'spawn' and
+      'system' functions from the DJGPP library; this port just calls
+      'system' where it would invoke the shell on Unix.  The most
+      important aspect of these functions is that they use a special
+      mechanism to pass long (up to 16KB) command lines to DJGPP
+      programs.  In addition, 'system' emulates some internal
+      commands, like 'cd' (so that you can now use forward slashes
+      with it, and can also change the drive if the directory is on
+      another drive).  Another aspect worth mentioning is that you can
+      call Unix shell scripts directly, provided that the shell whose
+      name is mentioned on the first line of the script is installed
+      anywhere along the $PATH.  It is impossible to tell here
+      everything about these functions; refer to the DJGPP library
+      reference for more details.
+
+      The $(shell) built-in is implemented in this port by calling
+      'popen'.  Since 'popen' calls 'system', the above considerations
+      are valid for $(shell) as well.  In particular, you can put
+      arbitrary complex commands, including pipes and redirection,
+      inside $(shell), which is in many cases a valid substitute for
+      the Unix-style command substitution (`command`) feature.
+
+
+   2. "SHELL=/bin/sh" -- or is it?
+
+      Many Unix Makefiles include a line which sets the SHELL, for
+      those versions of Make which don't have this as the default.
+      Since many DOS systems don't have 'sh' installed (in fact, most
+      of them don't even have a '/bin' directory), this port takes
+      such directives with a grain of salt.  It will only honor such a
+      directive if the basename of the shell name (like 'sh' in the
+      above example) can indeed be found in the directory that is
+      mentioned in the SHELL= line ('/bin' in the above example), or
+      in the current working directory, or anywhere on the $PATH (in
+      that order).  If the basename doesn't include a filename
+      extension, Make will look for any known extension that indicates
+      an executable file (.exe, .com, .bat, .btm, .sh, and even .sed
+      and .pl).  If any such file is found, then $SHELL will be
+      defined to the exact pathname of that file, and that shell will
+      hence be used for the rest of processing.  But if the named
+      shell is *not* found, the line which sets it will be effectively
+      ignored, leaving the value of $SHELL as it was before.  Since a
+      lot of decisions that this port makes depend on the gender of
+      the shell, I feel it doesn't make any sense to tailor Make's
+      behavior to a shell which is nowhere to be found.
+
+      Note that the above special handling of "SHELL=" only happens
+      for Makefiles; if you set $SHELL in the environment or on the
+      Make command line, you are expected to give the complete
+      pathname of the shell, including the filename extension.
+
+      The default value of $SHELL is computed as on Unix (see the Make
+      manual for details), except that if $SHELL is not defined in the
+      environment, $COMSPEC is used.  Also, if an environment variable
+      named $MAKESHELL is defined, it takes precedence over both
+      $COMSPEC and $SHELL.  Note that, unlike Unix, $SHELL in the
+      environment *is* used to set the shell (since on MSDOS, it's
+      unlikely that the interactive shell will not be suitable for
+      Makefile processing).
+
+      The bottom line is that you can now write Makefiles where some
+      of the targets require a real (i.e. Unix-like) shell, which will
+      nevertheless work when such shell is not available (provided, of
+      course, that the commands which should always work, don't
+      require such a shell).  More important, you can convert Unix
+      Makefiles to MSDOS and leave the line which sets the shell
+      intact, so that people who do have Unixy shell could use it for
+      targets which aren't converted to DOS (like 'install' and
+      'uninstall', for example).
+
+
+   3. Default directories.
+
+      GNU Make knows about standard directories where it searches for
+      library and include files mentioned in the Makefile.  Since
+      MSDOS machines don't have standard places for these, this port
+      will search ${DJDIR}/lib and ${DJDIR}/include respectively.
+      $DJDIR is defined automatically by the DJGPP startup code as the
+      root of the DJGPP installation tree (unless you've tampered with
+      the DJGPP.ENV file).  This should provide reasonable default
+      values, unless you moved parts of DJGPP to other directories.
+
+
+   4. Letter-case in filenames.
+
+      If you run Make on Windows 9x, you should be aware of the
+      letter-case issue.  Make is internally case-sensitive, but all
+      file operations are case-insensitive on Windows 9x, so
+      e.g. files 'FAQ', 'faq' and 'Faq' all refer to the same file, as
+      far as Windows is concerned.  The underlying DJGPP C library
+      functions honor the letter-case of the filenames they get from
+      the OS, except that by default, they down-case 8+3 DOS filenames
+      which are stored in upper case in the directory and would break
+      many Makefiles otherwise.  (The details of which filenames are
+      converted to lower case are explained in the DJGPP libc docs,
+      under the '_preserve_fncase' and '_lfn_gen_short_fname'
+      functions, but as a thumb rule, any filename that is stored in
+      upper case in the directory, is a valid DOS 8+3 filename and
+      doesn't include characters invalid on MSDOS FAT filesystems,
+      will be automatically down-cased.)  User reports that I have
+      indicate that this default behavior is generally what you'd
+      expect; however, your input is most welcome.
+
+      In any case, if you hit a situation where you must force Make to
+      get the 8+3 DOS filenames in upper case, set FNCASE=y in the
+      environment or in the Makefile.
+
+
+   5. DOS-style pathnames.
+
+      There are a lot of places throughout the program sources which
+      make implicit assumptions about the pathname syntax.  In
+      particular, the directories are assumed to be separated by '/',
+      and any pathname which doesn't begin with a '/' is assumed to be
+      relative to the current directory.  This port attempts to
+      support DOS-style pathnames which might include the drive letter
+      and use backslashes instead of forward slashes.  However, this
+      support is not complete; I feel that pursuing this support too
+      far might break some more important features, particularly if
+      you use a Unix-style shell (where a backslash is a quote
+      character).  I only consider support of backslashes desirable
+      because some Makefiles invoke non-DJGPP programs which don't
+      understand forward slashes.  A notable example of such programs
+      is the standard programs which come with MSDOS.  Otherwise, you
+      are advised to stay away from backslashes whenever possible.  In
+      particular, filename globbing won't work on pathnames with
+      backslashes, because the GNU 'glob' library doesn't support them
+      (backslash is special in filename wildcards, and I didn't want
+      to break that).
+
+      One feature which *does* work with backslashes is the filename-
+      related built-in functions such as $(dir), $(notdir), etc.
+      Drive letters in pathnames are also fully supported.
+
+
+
+Bug reports:
+-----------
+
+   Bugs that are clearly related to the MSDOS/DJGPP port should be
+   reported first on the comp.os.msdos.djgpp news group (if you cannot
+   post to Usenet groups, write to the DJGPP mailing list,
+   <djgpp@delorie.com>, which is an email gateway into the above news
+   group).  For other bugs, please follow the procedure explained in
+   the "Bugs" chapter of the Info docs.  If you don't have an Info
+   reader, look up that chapter in the 'make.i1' file with any text
+   browser/editor.
+
+
+   Enjoy,
+                        Eli Zaretskii <eliz@is.elta.co.il>
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/README.OS2.template b/src/kmk/README.OS2.template
new file mode 100644
index 0000000..0ce81b4
--- /dev/null
+++ b/src/kmk/README.OS2.template
@@ -0,0 +1,176 @@
+Port of GNU make to OS/2.
+
+Features of GNU make that do not work under OS/2:
+  - remote job execution
+  - dynamic load balancing
+
+
+Special features of the OS/2 version:
+
+Due to the fact that some people might want to use sh syntax in
+Makefiles while others might want to use OS/2's native shell cmd.exe,
+GNU make supports both shell types. The following list defines the order
+that is used to determine the shell:
+
+ 1. The shell specified by the environment variable MAKESHELL.
+ 2. The shell specified by the SHELL variable within a Makefile. Like
+    Unix, SHELL is NOT taken from the environment.
+ 3. The shell specified by the COMSPEC environment variable.
+ 4. The shell specified by the OS2_SHELL environment variable.
+ 5. If none of the above is defined /bin/sh is used as default.  This
+    happens e.g. in the make testsuite.
+
+Note: - Points 3 and 4 can be turned off at compile time by adding
+        -DNO_CMD_DEFAULT to the CPPFLAGS.
+      - DOS support is not tested for EMX and therefore might not work.
+      - The UNIXROOT environment variable is supported to find /bin/sh
+        if it is not on the current drive.
+
+
+COMPILATION OF GNU MAKE FOR OS/2:
+
+I. ***** SPECIAL OPTIONS *****
+
+ - At compile time you can turn off that cmd is used as default shell
+   (but only /bin/sh). Simply set CPPFLAGS="-DNO_CMD_DEFAULT" and make
+   will not use cmd unless you cause it to do so by setting MAKESHELL to
+   cmd or by specifying SHELL=cmd in your Makefile.
+
+ - At compile time you can set CPPFLAGS="-DNO_CHDIR2" to turn off that
+   GNU make prints drive letters. This is necessary if you want to run
+   the testsuite.
+
+
+II. ***** REQUIREMENTS FOR THE COMPILATION *****
+
+A standard Unix like build environment:
+
+ - sh compatible shell (ksh, bash, ash, but tested only with pdksh 5.2.14
+   release 2)
+   If you use pdksh it is recommended to update to 5.2.14 release 2. Older
+   versions may not work! You can get this version at
+   http://www.math.ohio-state.edu/~ilya/software/os2/pdksh-5.2.14-bin-2.zip
+ - GNU file utilities (make sure that install.exe from the file utilities
+   is in front of your PATH before X:\OS2\INSTALL\INSTALL.EXE. I recommend
+   also to change the filename to ginstall.exe instead of install.exe
+   to avoid confusion with X:\OS2\INSTALL\INSTALL.EXE)
+ - GNU shell utilities
+ - GNU text utilities
+ - gawk
+ - grep
+ - sed
+ - GNU make 3.79.1 (special OS/2 patched version) or higher
+ - perl 5.005 or higher
+ - GNU texinfo (you can use 3.1 (gnuinfo.zip), but I recommend 4.0)
+
+If you want to recreate the configuration files (developers only!)
+you need also: GNU m4 1.4, autoconf 2.59, automake 1.9.6 (or compatible)
+
+
+III. ***** COMPILATION AND INSTALLATION *****
+
+ a) ** Developers only - Everyone else should skip this section **
+    To recreate the configuration files use:
+
+      export EMXSHELL=ksh
+      aclocal -I config
+      automake
+      autoconf
+      autoheader
+
+
+b) Installation into x:/usr
+
+   Note: Although it is possible to compile make using "./configure",
+         "make", "make install" this is not recommended.  In particular,
+         you must ALWAYS use LDFLAGS="-Zstack 0x6000" because the default
+         stack size is far to small and make will not work properly!
+
+Recommended environment variables and installation options:
+
+    export ac_executable_extensions=".exe"
+    export CPPFLAGS="-D__ST_MT_ERRNO__"
+    export CFLAGS="-O2 -Zomf -Zmt"
+    export LDFLAGS="-Zcrtdll -Zlinker /exepack:2 -Zlinker /pm:vio -Zstack 0x6000"
+    export RANLIB="echo"
+    ./configure --prefix=x:/usr --infodir=x:/usr/share/info --mandir=x:/usr/share/man --without-included-gettext
+    make AR=emxomfar
+    make install
+
+Note: If you use gcc 2.9.x I recommend to set also LIBS="-lgcc"
+
+Note: You can add -DNO_CMD_DEFAULT and -DNO_CHDIR2 to CPPFLAGS.
+      See section I. for details.
+
+
+IV. ***** NLS support *****
+
+GNU make has NLS (National Language Support), with the following
+caveats:
+
+ a) It will only work with GNU gettext, and
+ b) GNU gettext support is not included in the GNU make package.
+
+Therefore, if you wish to enable the internationalization features of
+GNU make you must install GNU gettext on your system before configuring
+GNU make.
+
+You can choose the languages to be installed. To install support for
+English, German and French only enter:
+
+  export LINGUAS="en de fr"
+
+If you don't specify LINGUAS all languages are installed.
+
+If you don't want NLS support (English only) use the option
+--disable-nls for the configure script.  Note if GNU gettext is not
+installed then NLS will not be enabled regardless of this flag.
+
+
+V. ***** Running the make test suite *****
+
+To run the included make test suite you have to set
+
+  CPPFLAGS="-D__ST_MT_ERRNO__ -DNO_CMD_DEFAULT -DNO_CHDIR2"
+
+before you compile make. This is due to some restrictions of the
+testsuite itself. -DNO_CMD_DEFAULT causes make to use /bin/sh as default
+shell in every case. Normally you could simply set MAKESHELL="/bin/sh"
+to do this but the testsuite ignores the environment. -DNO_CHDIR2 causes
+make not to use drive letters for directory names (i.e. _chdir2() and
+_getcwd2() are NOT used).  The testsuite interpretes the whole output of
+make, especially statements like make[1]: Entering directory
+'C:/somewhere/make-3.79.1/tests' where the testsuite does not expect the
+drive letter. This would be interpreted as an error even if there is
+none.
+
+To run the testsuite do the following:
+
+  export CPPFLAGS="-D__ST_MT_ERRNO__ -DNO_CMD_DEFAULT -DNO_CHDIR2"
+  export CFLAGS="-Zomf -O2 -Zmt"
+  export LDFLAGS="-Zcrtdll -s -Zlinker /exepack:2 -Zlinker /pm:vio -Zstack 0x6000"
+  export RANLIB="echo"
+  ./configure --prefix=x:/usr --disable-nls
+  make AR=emxomfar
+  make check
+
+All tests should work fine with the exception of one of the "INCLUDE_DIRS"
+tests which will fail if your /usr/include directory is on a drive different
+from the make source tree.
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 2003-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/README.VMS b/src/kmk/README.VMS
new file mode 100644
index 0000000..5532b01
--- /dev/null
+++ b/src/kmk/README.VMS
@@ -0,0 +1,515 @@
+Overview:                                                       -*-text-mode-*-
+---------
+
+  This version of GNU make has been tested on:
+  OpenVMS V8.3/V8.4 (Alpha) and V8.4 (Integrity) AND V7.3 (VAX)
+
+  This version of GNU Make is intended to be run from DCL to run
+  make scripts with a special syntax that is described below.  It
+  likely will not be able to run unmodified Unix makefiles.
+
+  There is an older implementation of GNU Make that was ported to GNV.
+  Work is now in progress to merge that port to get a single version
+  of GNU Make available.  When that merge is done, GNU Make will auto
+  detect that it is running under a Posix shell and then operate as close to
+  GNU Make on Unix as possible.
+
+  The descriptions below are for running GNU make from DCL or equivalent.
+
+Recipe differences:
+-------------------
+
+  GNU Make for OpenVMS can not currently run native Unix make files because of
+  differences in the implementation.
+
+  I am trying to document the current behavior in this section.  This is based
+  on the information in the file NEWS. and running the test suite.
+  TODO: More tests are needed to validate and demonstrate the OpenVMS
+  expected behavior.
+
+  In some cases the older behavior of GNU Make when run from DCL is not
+  compatible with standard makefile behavior.
+
+  This behavior can be changed when running GNU Make from DCL by setting
+  either DCL symbols or logical names of the format GNV$.  The settings
+  are enabled with a string starting with one of '1', 'T', or 'E' for "1",
+  "TRUE", or "ENABLE".  They are disabled with a '0', 'F', or 'D' for "1",
+  "FALSE", or "DISABLE".  If they are not explicitly set to one of these
+  values, then they will be set to their default values.
+
+  The value of the setting DECC$FILENAME_UNIX_REPORT or
+  DECC$FILENAME_UNIX_ONLY will now cause the $(dir x) function to return
+  './' or '[]' as appropriate.
+
+  The name GNV$MAKE_OLD_VMS when enabled will cause GNU Make to behave as
+  much as the older method as can be done with out disabling VMS features.
+  When it is disabled GNU Make have the new behavior which more closely
+  matches Unix Make behavior.
+
+  The default is currently the old behavior when running GNU Make from DCL.
+  In the future this may change.  When running make from GNV Bash the new
+  behavior is the default.
+
+  This is a global setting that sets the default behavior for several other
+  options that can be individually changed.  Many of the individual settings
+  are to make it so that the self tests for GNU Make need less VMS specific
+  modifications.
+
+  The name GNV$MAKE_COMMA when enabled will cause GNU Make to expect a comma
+  for a path separator and use a comma for the separator for a list of files.
+  When disabled, it will cause GNU Make to use a colon for a path separator
+  and a space for the separator for a list of files.  The default is to be
+  enabled if the GNU Make is set to the older behavior.
+
+  The name GNV$MAKE_SHELL_SIM when enabled will cause GNU Make to try to
+  simulate a Posix shell more closely.  The following behaviors occur:
+
+    * Single quotes are converted to double quotes and any double
+      quotes inside of them are doubled.  No environment variable expansion
+      is simulated.
+    * A exit command status will be converted to a Posix Exit
+      where 0 is success and non-zero is failure.
+    * The $ character will cause environment variable expansion.
+    * Environent variables can be set on the command line before a command.
+
+  VMS generally uses logical name search lists instead of path variables
+  where the resolution is handled by VMS independent of the program.  Which
+  means that it is likely that nothing will notice if the default path
+  specifier is changed in the future.
+
+  Currently the built in VMS specific macros and recipes depend on the comma
+  being used as a file list separator.
+  TODO: Remove this dependency as other functions in GNU Make depend on a
+  space being used as a separator.
+
+  The format for recipes are a combination of Unix macros, a subset of
+  simulated UNIX commands, some shell emulation, and OpenVMS commands.
+  This makes the resulting makefiles unique to the OpenVMS port of GNU make.
+
+  If you are creating a OpenVMS specific makefile from scratch, you should also
+  look at MMK (Madgoat Make) available at https://github.com/endlesssoftware/mmk
+  MMK uses full OpenVMS syntax and a persistent subprocess is used for the
+  recipe lines, allowing multiple line rules.
+
+  The default makefile search order is "makefile.vms", "gnumakefile",
+  "makefile".  TODO: See if that lookup is case sensitive.
+
+  When Make is invoked from DCL, it will create a foreign command
+  using the name of executable image, with any facility prefix removed,
+  for the duration of the make program, so it can be used internally
+  to recursively run make().  The macro MAKE_COMMAND will be set to
+  this foreign command.
+
+  When make is launched from an exec*() command from a C program,
+  the foreign command is not created.  The macro MAKE_COMMAND will be
+  set to the actual command passed as argv[0] to the exec*() function.
+
+  If the DCL symbol or logical name GNV$MAKE_USE_MCR exists, then
+  the macro MAKE_COMMAND will be set to be an "MCR" command with the
+  absolute path used by DCL to launch make.  The foreign command
+  will not be created.
+
+  The macro MAKE is set to be the same value as the macro MAKE_COMMAND
+  on all platforms.
+
+  Each recipe command is normally run as a separate spawned processes,
+  except for the cases documented below where a temporary DCL command
+  file may be used.
+
+  BUG: Testing has shown that the commands in the temporary command files
+  are not always created properly.  This issue is still under investigation.
+
+  Any macros marked as exported are temporarily created as DCL symbols
+  for child images to use.  DCL symbol substitution is not done with these
+  commands.
+  Untested: Symbol substitution.
+
+  When a temporary DCL command file is used, DCL symbol substitution
+  will work.
+
+  For VMS 7.3-1 and earlier, command lines are limited to 255 characters
+  or 1024 characters in a command file.
+  For VMS 7.3-2 and later, command lines are limited to 4059 characters
+  or 8192 characters in a command file.
+
+  VMS limits each token of a command line to 256 characters, and limits
+  a command line to 127 tokens.
+
+  Command lines above the limit length are written to a command file
+  in sys$scratch:.
+
+  In order to handle Unix style extensions to VMS DCL, GNU Make has
+  parsed the recipe commands and them modified them as needed.  The
+  parser has been re-written to resolve numerous bugs in handling
+  valid VMS syntax and potential buffer overruns.
+
+  The new parser may need whitespace characters where DCL does not require
+  it, and also may require that quotes are matched were DCL forgives if
+  they are not.  There is a small chance that existing VMS specific makefiles
+  will be affected.
+
+  The '<', '>' was previously implemented using command files.  Now
+  GNU Make will check to see if the is already a VMS "PIPE" command and
+  if it is not, will convert the command to a VMS "PIPE" command.
+
+  The '>>' redirection has been implemented by using a temporary command file.
+  This will be described later.
+
+  The DCL symbol or logical name GNV$MAKE_USE_CMD_FILE when set to a
+  string starting with one of '1','T', or 'E' for "1", "TRUE", or "ENABLE",
+  then temporary DCL command files are always used for running commands.
+
+  Some recipe strings with embedded new lines will not be handled correctly
+  when a command file is used.
+
+  GNU Make generally does text comparisons for the targets and sources.  The
+  make program itself can handle either Unix or OpenVMS format filenames, but
+  normally does not do any conversions from one format to another.
+  TODO: The OpenVMS format syntax handling is incomplete.
+  TODO: ODS-5 EFS support is missing.
+  BUG: The internal routines to convert filenames to and from OpenVMS format
+  do not work correctly.
+
+  Note: In the examples below, line continuations such as a backslash may have
+  been added to make the examples easier to read in this format.
+  BUG: That feature does not completely work at this time.
+
+  Since the OpenVMS utilities generally expect OpenVMS format paths, you will
+  usually have to use OpenVMS format paths for rules and targets.
+  BUG: Relative OpenVMS paths may not work in targets, especially combined
+  with vpaths.  This is because GNU make will just concatenate the directories
+  as it does on Unix.
+
+  The variables $^ and $@ separate files with commas instead of spaces.
+  This is controlled by the name GNV$MAKE_COMMA as documented in the
+  previous section.
+
+  While this may seem the natural thing to do with OpenVMS, it actually
+  causes problems when trying to use other make functions that expect the
+  files to be separated by spaces.  If you run into this, you need the
+  following workaround to convert the output.
+  TODO: Look at have the $^ and $@ use spaces like on Unix and have
+  and easy to use function to do the conversions and have the built
+  in OpenVMS specific recipes and macros use it.
+
+  Example:
+
+comma := ,
+empty :=
+space := $(empty) $(empty)
+
+foo: $(addsuffix .3,$(subs $(comma),$(space),$^)
+
+
+  Makefile variables are looked up in the current environment. You can set
+  symbols or logicals in DCL and evaluate them in the Makefile via
+  $(<name-of-symbol-or-logical>).  Variables defined in the Makefile
+  override OpenVMS symbols/logicals.
+
+  OpenVMS logical and symbols names show up as "environment" using the
+  origin function.  when the "-e" option is specified, the origion function
+  shows them as "environment override".  On Posix the test scripts indicate
+  that they should show up just as "environment".
+
+  When GNU make reads in a symbol or logical name into the environment, it
+  converts any dollar signs found to double dollar signs for convenience in
+  using DCL symbols and logical names in recipes.  When GNU make exports a
+  DCL symbol for a child process, if the first dollar sign found is followed
+  by second dollar sign, then all double dollar signs will be convirted to
+  single dollar signs.
+
+  The variable $(ARCH) is predefined as IA64, ALPHA or VAX respectively.
+  Makefiles for different OpenVMS systems can now be written by checking
+  $(ARCH).  Since IA64 and ALPHA are similar, usually just a check for
+  VAX or not VAX is sufficient.
+
+  You may have to update makefiles that assume VAX if not ALPHA.
+
+ifeq ($(ARCH),VAX)
+  $(ECHO) "On the VAX"
+else
+  $(ECHO) "On the ALPHA  or IA64"
+endif
+
+  Empty commands are handled correctly and don't end in a new DCL process.
+
+  The exit command needs to have OpenVMS exit codes.  To pass a Posix code
+  back to the make script, you need to encode it by multiplying it by 8
+  and then adding %x1035a002 for a failure code and %x1035a001 for a
+  success.  Make will interpret any posix code other than 0 as a failure.
+  TODO: Add an option have simulate Posix exit commands in recipes.
+
+  Lexical functions can be used in pipes to simulate shell file test rules.
+
+  Example:
+
+  Posix:
+b : c ; [ -f $@ ] || echo >> $@
+
+  OpenVMS:
+b : c ; if f$$search("$@") then pipe open/append xx $@ ; write xx "" ; close xx
+
+
+  You can also use pipes and turning messages off to silently test for a
+  failure.
+
+x = %x1035a00a
+
+%.b : %.c
+<tab>pipe set mess/nofac/noiden/nosev/notext ; type $^/output=$@ || exit $(x)
+
+
+Runtime issues:
+
+  The OpenVMS C Runtime has a convention for encoding a Posix exit status into
+  to OpenVMS exit codes.  These status codes will have the hex value of
+  0x35a000.  OpenVMS exit code may also have a hex value of %x10000000 set on
+  them.  This is a flag to tell DCL not to write out the exit code.
+
+  To convert an OpenVMS encoded Posix exit status code to the original code
+  You subtract %x35a000 and any flags from the OpenVMS code and divide it by 8.
+
+  WARNING: Backward-incompatibility!
+  The make program exit now returns the same encoded Posix exit code as on
+  Unix. Previous versions returned the OpenVMS exit status code if that is what
+  caused the recipe to fail.
+  TODO: Provide a way for scripts calling make to obtain that OpenVMS status
+  code.
+
+  Make internally has two error codes, MAKE_FAILURE and MAKE_TROUBLE.  These
+  will have the error "-E-" severity set on exit.
+
+  MAKE_TROUBLE is returned only if the option "-q" or "--question" is used and
+  has a Posix value of 1 and an OpenVMS status of %x1035a00a.
+
+  MAKE_FAILURE has a Posix value of 2 and an OpenVMS status of %x1035a012.
+
+  Output from GNU make may have single quotes around some values where on
+  other platforms it does not.  Also output that would be in double quotes
+  on some platforms may show up as single quotes on VMS.
+
+  There may be extra blank lines in the output on VMS.
+  https://savannah.gnu.org/bugs/?func=detailitem&item_id=41760
+
+  There may be a "Waiting for unfinished jobs..." show up in the output.
+
+  Error messages generated by Make or Unix utilities may slightly vary from
+  Posix platforms.  Typically the case may be different.
+
+  When make deletes files, on posix platforms it writes out 'rm' and the list
+  of files.  On VMS, only the files are writen out, one per line.
+  TODO: VMS
+
+  There may be extra leading white space or additional or missing whitespace
+  in the output of recipes.
+
+  GNU Make uses sys$scratch: for the tempfiles that it creates.
+
+  The OpenVMS CRTL library maps /tmp to sys$scratch if the TMP: logical name
+  does not exist.  As the CRTL may use both sys$scratch: and /tmp internally,
+  if you define the TMP logical name to be different than SYS$SCRATCH:,
+  you may end up with only some temporary files in TMP: and some in SYS$SCRATCH:
+
+  The default include directory for including other makefiles is
+  SYS$SYSROOT:[SYSLIB] (I don't remember why I didn't just use
+  SYS$LIBRARY: instead; maybe it wouldn't work that way).
+  TODO:  A better default may be desired.
+
+  If the device for a file in a recipe does not exist, on OpenVMS an error
+  message of "stat: <file>: no such device or address" will be output.
+
+  Make ignores success, informational, or warning errors (-S-, -I-, or
+  -W-).  But it will stop on -E- and -F- errors. (unless you do something
+  to override this in your makefile, or whatever).
+
+
+Unix compatibilty features:
+---------------------------
+
+  If the command 'echo' is seen, any single quotes on the line will be
+  converted to double quotes.
+
+  The variable $(CD) is implemented as a built in Change Directory
+  command. This invokes the 'builtin_cd'  Executing a 'set default'
+  recipe doesn't do the trick, since it only affects the subprocess
+  spawned for that command.
+
+  The 'builtin_cd' is generally expected to be on its own line.
+  The 'builtin_cd' either from the expansion of $(CD) or directly
+  put in a recipe line will be executed before any other commands in
+  that recipe line.  DCL parameter substitution will not work for the
+  'builtin_cd' command.
+
+  Putting a 'builtin_cd' in a pipeline or an IF-THEN line should not be
+  done because the 'builtin_cd' is always executed
+  and executed first.  The directory change is persistent.
+
+  Unix shell style I/O redirection is supported. You can now write lines like:
+  "<tab>mcr sys$disk:[]program.exe < input.txt > output.txt &> error.txt"
+
+  Posix shells have ":" as a null command.  These are now handled.
+  https://savannah.gnu.org/bugs/index.php?41761
+
+  A note on appending the redirected output.  A simple mechanism is
+  implemented to make ">>" work in action lines. In OpenVMS there is no simple
+  feature like ">>" to have DCL command or program output redirected and
+  appended to a file. GNU make for OpenVMS implements the redirection
+  of ">>" by using a command procedure.
+
+  The current algorithm creates the output file if it does not exist and
+  then uses the DCL open/append to extend it.  SYS$OUTPUT is then directed
+  to that file.
+
+  The implementation supports only one redirected append output to a file
+  and that redirection is done before any other commands in that line
+  are executed, so it redirects all output for that command.
+
+  The older implementation wrote the output to a temporary file in
+  in sys$scratch: and then attempted to append the file to the existing file.
+  The temporary file names looked like "CMDxxxxx.". Any time the created
+  command procedure can not complete, this happens. Pressing Ctrl+Y to
+  abort make is one case.
+
+  In case of Ctrl+Y the associated command procedure is left in SYS$SCRATCH:.
+  The command procedures will be named gnv$make_cmd*.com.
+
+  The CtrlY handler now uses $delprc to delete all children. This way also
+  actions with DCL commands will be stopped. As before the CtrlY handler
+  then sends SIGQUIT to itself, which is handled in common code.
+
+  Temporary command files are now deleted in the OpenVMS child termination
+  handler. That deletes them even if a Ctrl+C was pressed.
+  TODO: Does the previous section about >> leaving files still apply?
+
+  The behavior of pressing Ctrl+C is not changed. It still has only an effect,
+  after the current action is terminated. If that doesn't happen or takes too
+  long, Ctrl+Y should be used instead.
+
+
+Build Options:
+
+  Added support to have case sensitive targets and dependencies but to
+  still use case blind file names. This is especially useful for Java
+  makefiles on VMS:
+
+<TAB>.SUFFIXES :
+<TAB>.SUFFIXES : .class .java
+<TAB>.java.class :
+<TAB><TAB>javac "$<"
+<TAB>HelloWorld.class :      HelloWorld.java
+
+  A new macro WANT_CASE_SENSITIVE_TARGETS in config.h-vms was introduced.
+  It needs to be enabled to get this feature; default is disabled.
+  TODO: This should be a run-time setting based on if the process
+  has been set to case sensitive.
+
+
+Unimplemented functionality:
+
+  The new feature "Loadable objects" is not yet supported. If you need it,
+  please send a change request or submit a bug report.
+
+  The new option --output-sync (-O) is accepted but has no effect: GNU make
+  for OpenVMS does not support running multiple commands simultaneously.
+
+
+Self test failures and todos:
+-----------------------------
+
+  The test harness can not handle testing some of the VMS specific modes
+  because of the features needed for to be set for the Perl to run.
+  Need to find a way to set the VMS features before running make as a
+  child.
+
+  GNU make was not currently translating the OpenVMS encoded POSIX values
+  returned to it back to the Posix values.  I have temporarily modified the
+  Perl test script to compensate for it.  This should be being handled
+  internally to Make.
+  TODO: Verify and update the Perl test script.
+
+  The features/parallelism test was failing. OpenVMS is executing the rules
+  in sequence not in parallel as this feature was not implemented.
+  GNU Make on VMS no longer claims it is implemented.
+  TODO: Implement it.
+
+  Symlink support is not present.  Symlinks are supported by OpenVMS 8.3 and
+  later.
+
+  Error messages should be supressed with the "-" at the beginning of a line.
+  On openVMS they were showing up.  TODO: Is this still an issue?
+
+  The internal vmsify and unixify OpenVMS to/from UNIX are not handling logical
+  names correctly.
+
+
+Build instructions:
+------------------
+
+  Don't use the HP C V7.2-001 compiler, which has an incompatible change
+  how __STDC__ is defined. This results at least in compile time warnings.
+
+Make a 1st version
+       $ @makefile.com  ! ignore any compiler and/or linker warning
+       $ copy make.exe 1st-make.exe
+
+  Use the 1st version to generate a 2nd version as a test.
+       $ mc sys$disk:[]1st-make clean  ! ignore any file not found messages
+       $ mc sys$disk:[]1st-make
+
+  Verify your 2nd version by building Make again.
+       $ copy make.exe 2nd-make.exe
+       $ mc sys$disk:[]2nd-make clean
+       $ mc sys$disk:[]2nd-make
+
+
+Running the tests:
+------------------
+
+  Running the tests on OpenVMS requires the following software to be installed
+  as most of the tests are Unix oriented.
+
+  * Perl 5.18 or later.
+    https://sourceforge.net/projects/vmsperlkit/files/
+  * GNV 2.1.3 + Updates including a minimum of:
+    * Bash 4.3.30
+    * ld_tools 3.0.2
+    * coreutils 8.21
+   https://sourceforge.net/p/gnv/wiki/InstallingGNVPackages/
+   https://sourceforge.net/projects/gnv/files/
+
+   As the test scripts need to create some foreign commands that persist
+   after the test is run, it is recommend that either you use a subprocess or
+   a dedicated login to run the tests.
+
+   To get detailed information for running the tests:
+
+   $ set default [.tests]
+   $ @run_make_tests help
+
+   Running the script with no parameters will run all the tests.
+
+   After the the test script has been run once in a session, assuming
+   that you built make in sys$disk:[make], you can redefined the
+   "bin" logical name as follows:
+
+   $ define bin sys$disk:[make],gnv$gnu:[bin]
+
+   Then you can use Perl to run the scripts.
+
+   $ perl run_make_tests.pl
+
+
+Acknowlegements:
+----------------
+
+See NEWS. for details of past changes.
+
+  These are the currently known contributers to this port.
+
+  Hartmut Becker
+  John Malmberg
+  Michael Gehre
+  John Eisenbraun
+  Klaus Kaempf
+  Mike Moretti
+  John W. Eaton
diff --git a/src/kmk/README.W32.template b/src/kmk/README.W32.template
new file mode 100644
index 0000000..3ac3354
--- /dev/null
+++ b/src/kmk/README.W32.template
@@ -0,0 +1,314 @@
+This version of GNU make has been tested on:
+  Microsoft Windows 2000/XP/2003/Vista/7/8/10
+It has also been used on Windows 95/98/NT, and on OS/2.
+
+It builds with the MinGW port of GCC (tested with GCC 3.4.2, 4.8.1,
+and 4.9.3).
+
+It also builds with MSVC 2.x, 4.x, 5.x, 6.x, 2003, and 14 (2015) as
+well as with .NET 7.x and .NET 2003.
+
+As of version 4.0, a build with Guile is supported (tested with Guile
+2.0.3).  To build with Guile, you will need, in addition to Guile
+itself, its dependency libraries and the pkg-config program.  The
+latter is used to figure out which compilation and link switches and
+libraries need to be mentioned on the compiler command lines to
+correctly link with Guile.  A Windows port of pkg-config can be found
+on ezwinports site:
+
+  http://sourceforge.net/projects/ezwinports/
+
+The libraries on which Guile depends can vary depending on your
+version and build of Guile.  At the very least, the Boehm's GC library
+will be needed, and typically also GNU MP, libffi, libunistring, and
+libtool's libltdl.  Whoever built the port of Guile you have should
+also provide you with these dependencies or a URL where to download
+them.  A precompiled 32-bit Windows build of Guile is available from
+the ezwinports site mentioned above.
+
+The Windows port of GNU make is maintained jointly by various people.
+It was originally made by Rob Tulloh.
+It is currently maintained by Eli Zaretskii.
+
+
+Do this first, regardless of the build method you choose:
+---------------------------------------------------------
+
+ 1. Edit config.h.W32 to your liking (especially the few shell-related
+    defines near the end, or HAVE_CASE_INSENSITIVE_FS which corresponds
+    to './configure --enable-case-insensitive-file-system').  (We don't
+    recommend to define HAVE_CASE_INSENSITIVE_FS, but you may wish to
+    consider that if you have a lot of files whose names are in upper
+    case, while Makefile rules are written for lower-case versions.)
+
+
+Using make_msvc_net2003.vcproj
+------------------------------
+
+ 2. Open make_msvc_net2003.vcproj in MSVS71 or MSVC71 or any compatible IDE,
+    then build this project as usual.  There's also a solution file for
+    Studio 2003.
+
+
+Building with (MinGW-)GCC using build_w32.bat
+---------------------------------------------
+
+ 2. Open a W32 command prompt for your installed (MinGW-)GCC, setup a
+    correct PATH and other environment variables for it, then execute ...
+
+        build_w32.bat gcc
+
+    This produces gnumake.exe in the GccRel directory.
+    If you want a version of GNU make built with debugging enabled,
+    add the --debug option.
+
+    The batch file will probe for Guile installation, and will build
+    gnumake.exe with Guile if it finds it.  If you have Guile
+    installed, but want to build Make without Guile support, type
+
+        build_w32.bat --without-guile gcc
+
+
+Building with (MSVC++-)cl using build_w32.bat or NMakefile
+----------------------------------------------------------
+
+ 2. Open a W32 command prompt for your installed (MSVC++-)cl, setup a
+    correct PATH and other environment variables for it (usually via
+    executing vcvars32.bat or vsvars32.bat from the cl-installation,
+    e.g. "%VS71COMNTOOLS%vsvars32.bat"; or using a corresponding start
+    menue entry from the cl-installation), then execute EITHER ...
+
+        build_w32.bat
+
+    This produces gnumake.exe in the WinRel directory.
+    If you want a version of GNU make built with debugging enabled,
+    add the --debug option.
+
+    ... OR ...
+
+        nmake /f NMakefile
+
+    (this produces WinDebug/make.exe and WinRel/make.exe).
+
+    The batch file will probe for Guile installation, and will build
+    gnumake.exe with Guile if it finds it.  If you have Guile
+    installed, but want to build Make without Guile support, type
+
+        build_w32.bat --without-guile
+
+-------------------
+-- Notes/Caveats --
+-------------------
+
+GNU make on Windows 32-bit platforms:
+
+        This version of make is ported natively to Windows32 platforms
+        (Windows NT 3.51, Windows NT 4.0, Windows 2000, Windows XP,
+        Windows 95, and Windows 98). It does not rely on any 3rd party
+        software or add-on packages for building. The only thing
+        needed is a Windows compiler.  Two compilers supported
+        officially are the MinGW port of GNU GCC, and the various
+        versions of the Microsoft C compiler.
+
+        Do not confuse this port of GNU make with other Windows32 projects
+        which provide a GNU make binary. These are separate projects
+        and are not connected to this port effort.
+
+GNU make and sh.exe:
+
+        This port prefers if you have a working sh.exe somewhere on
+        your system. If you don't have sh.exe, the port falls back to
+        MSDOS mode for launching programs (via a batch file).  The
+        MSDOS mode style execution has not been tested that carefully
+        though (The author uses GNU bash as sh.exe).
+
+        There are very few true ports of Bourne shell for NT right now.
+        There is a version of GNU bash available from Cygnus "Cygwin"
+        porting effort (http://www.cygwin.com/).
+        Other possibilities are the MKS version of sh.exe, or building
+        your own with a package like NutCracker (DataFocus) or Portage
+        (Consensys).  Also MinGW includes sh (http://mingw.org/).
+
+GNU make and brain-dead shells (BATCH_MODE_ONLY_SHELL):
+
+        Some versions of Bourne shell do not behave well when invoked
+        as 'sh -c' from CreateProcess().  The main problem is they seem
+        to have a hard time handling quoted strings correctly. This can
+        be circumvented by writing commands to be executed to a batch
+        file and then executing the command by calling 'sh file'.
+
+        To work around this difficulty, this version of make supports
+        a batch mode.  When BATCH_MODE_ONLY_SHELL is defined at compile
+        time, make forces all command lines to be executed via script
+        files instead of by command line.  In this mode you must have a
+        working sh.exe in order to use parallel builds (-j).
+
+        A native Windows32 system with no Bourne shell will also run
+        in batch mode.  All command lines will be put into batch files
+        and executed via $(COMSPEC) (%COMSPEC%).  However, parallel
+        builds ARE supported with Windows shells (cmd.exe and
+        command.com).  See the next section about some peculiarities
+        of parallel builds on Windows.
+
+Support for parallel builds
+
+        Parallel builds (-jN) are supported in this port, with 1
+        limitation: The number of concurrent processes has a hard
+        limit of 64, due to the way this port implements waiting for
+        its subprocesses.
+
+GNU make and Cygnus GNU Windows32 tools:
+
+        Good news! Make now has native support for Cygwin sh. To enable,
+        define the HAVE_CYGWIN_SHELL in config.h and rebuild make
+        from scratch. This version of make tested with B20.1 of Cygwin.
+        Do not define BATCH_MODE_ONLY_SHELL if you use HAVE_CYGWIN_SHELL.
+
+GNU make and the MKS shell:
+
+        There is now semi-official support for the MKS shell. To turn this
+        support on, define HAVE_MKS_SHELL in the config.h.W32 before you
+        build make.  Do not define BATCH_MODE_ONLY_SHELL if you turn
+        on HAVE_MKS_SHELL.
+
+GNU make handling of drive letters in pathnames (PATH, vpath, VPATH):
+
+        There is a caveat that should be noted with respect to handling
+        single character pathnames on Windows systems.  When colon is
+        used in PATH variables, make tries to be smart about knowing when
+        you are using colon as a separator versus colon as a drive
+        letter.  Unfortunately, something as simple as the string 'x:/'
+        could be interpreted 2 ways: (x and /) or (x:/).
+
+        Make chooses to interpret a letter plus colon (e.g. x:/) as a
+        drive letter pathname.  If it is necessary to use single
+        character directories in paths (VPATH, vpath, Path, PATH), the
+        user must do one of two things:
+
+         a. Use semicolon as the separator to disambiguate colon. For
+            example use 'x;/' if you want to say 'x' and '/' are
+            separate components.
+
+         b. Qualify the directory name so that there is more than
+            one character in the path(s) used. For example, none
+            of these settings are ambiguous:
+
+              ./x:./y
+              /some/path/x:/some/path/y
+              x:/some/path/x:x:/some/path/y
+
+        Please note that you are free to mix colon and semi-colon in the
+        specification of paths.  Make is able to figure out the intended
+        result and convert the paths internally to the format needed
+        when interacting with the operating system, providing the path
+        is not within quotes, e.g. "x:/test/test.c".
+
+        You are encouraged to use colon as the separator character.
+        This should ease the pain of deciding how to handle various path
+        problems which exist between platforms.  If colon is used on
+        both Unix and Windows systems, then no ifdef'ing will be
+        necessary in the makefile source.
+
+GNU make test suite:
+
+        I verified all functionality with a slightly modified version
+        of make-test-%VERSION% (modifications to get test suite to run
+        on Windows NT). All tests pass in an environment that includes
+        sh.exe.  Tests were performed on both Windows NT and Windows 95.
+
+Pathnames and white space:
+
+        Unlike Unix, Windows 95/NT systems encourage pathnames which
+        contain white space (e.g. C:\Program Files\). These sorts of
+        pathnames are valid on Unix too, but are never encouraged.
+        There is at least one place in make (VPATH/vpath handling) where
+        paths containing white space will simply not work. There may be
+        others too. I chose to not try and port make in such a way so
+        that these sorts of paths could be handled. I offer these
+        suggestions as workarounds:
+
+                1. Use 8.3 notation. i.e. "x:/long~1/", which is actually
+                   "x:\longpathtest".  Type "dir /x" to view these filenames
+                   within the cmd.exe shell.
+                2. Rename the directory so it does not contain white space.
+
+        If you are unhappy with this choice, this is free software
+        and you are free to take a crack at making this work. The code
+        in w32/pathstuff.c and vpath.c would be the places to start.
+
+Pathnames and Case insensitivity:
+
+        Unlike Unix, Windows 95/NT systems are case insensitive but case
+        preserving.  For example if you tell the file system to create a
+        file named "Target", it will preserve the case.  Subsequent access to
+        the file with other case permutations will succeed (i.e. opening a
+        file named "target" or "TARGET" will open the file "Target").
+
+        By default, GNU make retains its case sensitivity when comparing
+        target names and existing files or directories.  It can be
+        configured, however, into a case preserving and case insensitive
+        mode by adding a define for HAVE_CASE_INSENSITIVE_FS to
+        config.h.W32.
+
+        For example, the following makefile will create a file named
+        Target in the directory subdir which will subsequently be used
+        to satisfy the dependency of SUBDIR/DepTarget on SubDir/TARGET.
+        Without HAVE_CASE_INSENSITIVE_FS configured, the dependency link
+        will not be made:
+
+        subdir/Target:
+                touch $@
+
+        SUBDIR/DepTarget: SubDir/TARGET
+                cp $^ $@
+
+        Reliance on this behavior also eliminates the ability of GNU make
+        to use case in comparison of matching rules.  For example, it is
+        not possible to set up a C++ rule using %.C that is different
+        than a C rule using %.c.  GNU make will consider these to be the
+        same rule and will issue a warning.
+
+SAMBA/NTFS/VFAT:
+
+        I have not had any success building the debug version of this
+        package using SAMBA as my file server. The reason seems to be
+        related to the way VC++ 4.0 changes the case name of the pdb
+        filename it is passed on the command line. It seems to change
+        the name always to to lower case. I contend that the VC++
+        compiler should not change the casename of files that are passed
+        as arguments on the command line. I don't think this was a
+        problem in MSVC 2.x, but I know it is a problem in MSVC 4.x.
+
+        The package builds fine on VFAT and NTFS filesystems.
+
+        Most all of the development I have done to date has been using
+        NTFS and long file names. I have not done any considerable work
+        under VFAT. VFAT users may wish to be aware that this port of
+        make does respect case sensitivity.
+
+FAT:
+
+        Version 3.76 added support for FAT filesystems. Make works
+        around some difficulties with stat'ing of files and caching of
+        filenames and directories internally.
+
+Bug reports:
+
+        Please submit bugs via the normal bug reporting mechanism which
+        is described in the GNU make manual and the base README.
+
+-------------------------------------------------------------------------------
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/README.customs b/src/kmk/README.customs
new file mode 100644
index 0000000..67e1252
--- /dev/null
+++ b/src/kmk/README.customs
@@ -0,0 +1,112 @@
+                                                            -*-indented-text-*-
+
+GNU make can utilize the Customs library, distributed with Pmake, to
+provide builds distributed across multiple hosts.
+
+In order to utilize this capability, you must first download and build
+the Customs library.  It is contained in the Pmake distribution, which
+can be obtained at:
+
+  ftp://ftp.icsi.berkeley.edu/pub/ai/stolcke/software/
+
+This integration was tested (superficially) with Pmake 2.1.33.
+
+
+BUILDING CUSTOMS
+----------------
+
+First, build pmake and Customs.  You need to build pmake first, because
+Customs require pmake to build.  Unfortunately, this is not trivial;
+please see the pmake and Customs documentation for details.  The best
+place to look for instructions is in the pmake-2.1.33/INSTALL file.
+
+Note that the 2.1.33 Pmake distribution comes with a set of patches to
+GNU make, distributed in the pmake-2.1.33/etc/gnumake/ directory.  These
+patches are based on GNU make 3.75 (there are patches for earlier
+versions of GNU make, also).  The parts of this patchfile which relate
+directly to Customs support have already been incorporated into this
+version of GNU make, so you should _NOT_ apply the patch file.
+
+However, there are a few non-Customs specific (as far as I could tell)
+changes here which are not incorporated (for example, the modification
+to try expanding -lfoo to libfoo.so).  If you rely on these changes
+you'll need to re-apply them by hand.
+
+Install the Customs library and header files according to the
+documentation.  You should also install the man pages (contrary to
+comments in the documentation, they weren't installed automatically for
+me; I had to cd to the 'pmake-2.1.33/doc' directory and run 'pmake
+install' there directly).
+
+
+BUILDING GNU MAKE
+-----------------
+
+Once you've installed Customs, you can build GNU make to use it.  When
+configuring GNU make, merely use the '--with-customs=DIR' option.
+Provide the directory containing the 'lib' and 'include/customs'
+subdirectories as DIR.  For example, if you installed the customs
+library in /usr/local/lib and the headers in /usr/local/include/customs,
+then you'd pass '--with-customs=/usr/local' as an option to configure.
+
+Run make (or use build.sh) normally to build GNU make as described in
+the INSTALL file.
+
+See the documentation for Customs for information on starting and
+configuring Customs.
+
+
+INVOKING CUSTOMS-IZED GNU MAKE
+-----------------------------
+
+One thing you should be aware of is that the default build environment
+for Customs requires root permissions.  Practically, this means that GNU
+make must be installed setuid root to use Customs.
+
+If you don't want to do this, you can build Customs such that root
+permissions are not necessary.  Andreas Stolcke <stolcke@speech.sri.com>
+writes:
+
+ > pmake, gnumake or any other customs client program is not required to
+ > be suid root if customs was compiled WITHOUT the USE_RESERVED_PORTS
+ > option in customs/config.h.  Make sure the "customs" service in
+ > /etc/services is defined accordingly (port 8231 instead of 1001).
+
+ > Not using USE_RESERVED_PORTS means that a user with programming
+ > skills could impersonate another user by writing a fake customs
+ > client that pretends to be someone other than himself.  See the
+ > discussion in etc/SECURITY.
+
+
+PROBLEMS
+--------
+
+SunOS 4.1.x:
+  The customs/sprite.h header file #includes the <malloc.h> header
+  files; this conflicts with GNU make's configuration so you'll get a
+  compile error if you use GCC (or any other ANSI-capable C compiler).
+
+  I commented out the #include in sprite.h:107:
+
+    #if defined(sun) || defined(ultrix) || defined(hpux) || defined(sgi)
+    /* #include <malloc.h> */
+    #else
+
+  YMMV.
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1998-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/README.git b/src/kmk/README.git
new file mode 100644
index 0000000..41a7675
--- /dev/null
+++ b/src/kmk/README.git
@@ -0,0 +1,292 @@
+                                                                     -*-text-*-
+
+-------------------------------------------------------------------------------
+Copyright (C) 2002-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
+-------------------------------------------------------------------------------
+
+Obtaining Git Code
+------------------
+
+This seems redundant, since if you're reading this you most likely have
+already performed this step; however, for completeness, you can obtain the GNU
+make source code via Git from the FSF's Savannah project
+<http://savannah.gnu.org/projects/make/>:
+
+  $ git clone git://git.savannah.gnu.org/make.git
+
+
+Changes using Git
+-----------------
+
+For non-developers, you can continue to provide patches as before, or if you
+make a public repository I can pull from that if you prefer.
+
+Starting with GNU make 4.0 we no longer keep a separate ChangeLog file in
+source control.  We use the Gnulib git-to-changelog conversion script to
+convert the Git comments into ChangeLog-style entries for release.  As a
+result, please format your Git comments carefully so they will look clean
+after conversion.  In particular, each line of your comment will have a TAB
+added before it so be sure your comment lines are not longer than 72
+characters; prefer 70 or less.  Please use standard ChangeLog formats for
+your commit messages (sans the leading TAB of course).
+
+Rule #1: Don't rewrite pushed history (don't use "git push --force").
+
+Typical simple workflow might be:
+
+  * Edit files
+  * Use "git status" and "git diff" to verify your changes
+  * Use "git add" to stage the changes you want to make
+  * Use "git commit" to commit the staged changes to your local repository
+  * Use "git pull" to accept & merge new changes from the Savannah repository
+  * Use "git push" to push your commits back to the Savannah repository
+
+For Emacs users, there are many options for Git integration but I strongly
+recommend the Magit package: http://www.emacswiki.org/emacs/Magit
+It makes the workflow much clearer, and has advanced features such as
+constructing multiple commits from various files and even from different
+diff chunks in the same file.  There is a video available which helps a lot.
+
+
+Coding Standards
+----------------
+
+GNU make code adheres to the GNU Coding Standards.  Please use only spaces and
+no TAB characters in source code.
+
+Additionally, GNU make is a foundational bootstrap package for the GNU
+project; as such it is very conservative about language features it expects.
+It should build with any C compiler conforming to the ANSI C89 / ISO C90
+standard.
+
+
+Building From Git
+-----------------
+
+To build GNU make from Git, you will need Autoconf, Automake, and
+Gettext, and any tools that those utilities require (GNU m4, Perl,
+etc.).  See the configure.ac file to find the minimum versions of each
+of these tools.  You will also need a copy of wget and gnulib.
+
+When building from Git you must build in the source directory: "VPATH
+builds" from remote directories are not supported.  Once you've created
+a distribution, of course, you can unpack it and do a VPATH build from
+there.
+
+After checking out the code, you will need to perform these steps to get
+to the point where you can run "make".
+
+ 1) $ autoreconf -i
+
+    This rebuilds all the things that need rebuilding, installing
+    missing files as symbolic links.
+
+    You may get warnings here about missing files like README, etc.
+    Ignore them, they are harmless.
+
+ 2) $ ./configure
+
+    Generate a Makefile
+
+ 3) $ make update
+
+    Use wget to retrieve various other files that GNU make relies on,
+    but does not keep in its own source tree.
+
+    NB: You may need GNU make to correctly perform this step; if you use
+    a platform-local make you may get problems with missing files in doc/.
+
+At this point you have successfully brought your Git copy of the GNU
+make source directory up to the point where it can be treated
+more-or-less like the official package you would get from ftp.gnu.org.
+That is, you can just run:
+
+  $ make && make check && make install
+
+to build and install GNU make.
+
+
+Windows builds from Git
+-----------------------
+
+If you have a UNIX emulation like CYGWIN you can opt to run the general
+build procedure above; it will work.  Be sure to read
+README.W32.template for information on options you might want to use
+when running ./configure.
+
+If you can't or don't want to do that, then rename the file
+README.W32.template to README.W32 and follow those instructions.
+
+
+Creating a Package
+------------------
+
+Once you have performed the above steps (including the configuration and
+build) you can create a GNU make package.  This is very simple, just
+run:
+
+  $ make dist-gzip
+
+and, if you like:
+
+  $ make dist-bzip2
+
+Even better, you should run this:
+
+  $ make distcheck
+
+Which will build both .gz and .bz2 package files, then unpack them into
+a temporary location, try to build them, and repack them, verifying that
+everything works, you get the same results, _and_ no extraneous files
+are left over after the "distclean" rule--whew!!  Now, _that_ is why
+converting to Automake is worth the trouble!  A big "huzzah!" to Tom
+T. and the AutoToolers!
+
+
+Steps to Release
+----------------
+
+Here are the things that need to be done (in more or less this order)
+before making an official release.  If something breaks such that you need to
+change code, be sure to start over again sufficiently that everything is
+consistent (that's why we don't finalize the Git tag, etc. until the end).
+
+  * Update the configure.ac file with the new release number.
+  * Update the EDITION value in the doc/make.texi file.
+  * Update the NEWS file with the release number and date.
+  * Ensure the Savannah bug list URL in the NEWS file uses the correct
+    "Fixed Release" ID number.
+  * Run "make distcheck" to be sure it all works.
+  * Run "make check-alt-config" to be sure alternative configurations work
+  * Run "make update-makeweb" to get a copy of the GNU make web pages
+  * Run "make update-gnuweb" to get a copy of the GNU website boilerplate pages
+  * Update the web page boilerplate if necessary:
+      ../gnu-www/www/server/standards/patch-from-parent ../make-web/make.html \
+            ../gnu-www/www/server/standards/boilerplate.html
+  * Run "make gendocs" (requires gnulib) to generate the manual files for
+    the GNU make web pages.
+  * Follow the directions from gendocs for the web page repository
+  * run "make tag-release" to create a Git tag for the release
+  * Push everything:
+    git push --tags origin master
+
+Manage the Savannah project for GNU make:
+
+  >>> This is only for real releases, not release candidate builds <<<
+
+  * In Savannah modify the "Value", "Rank", and "Description" values for the
+    current "SCM" entry in both "Component Version" and "Fix Release" fields
+    to refer to the new release.  The "Rank" field should be 10 less than the
+    previous release so it orders properly.
+  * In Savannah create a new entry for the "Component Version" and "Fix
+    Release" fields:
+      - Value: SCM
+      - Rank:  20
+      - Descr: Issues found in code retrieved from Source Code Management (Git), rather than a distributed version. Please include the SHA you are working with.
+
+      - Descr: Fixed in Source Code Management (Git). The fix will be included in the next release of GNU make.
+
+Start the next release:
+
+  * Update configure.ac and add a ".90" to the release number.
+  * Update the NEWS file with a new section for the release / date.
+  * Update the Savannah URL for the bugs fixed in the NEWS section.
+
+
+Publishing a Package
+--------------------
+
+In order to publish a package on the FSF FTP site, either the release
+site ftp://ftp.gnu.org, or the prerelease site ftp://alpha.gnu.org, you
+first need to have my GPG private key and my passphrase to unlock it.
+And, you can't have them!  So there!  But, just so I remember here's
+what to do:
+
+  Make sure the "Steps to Release" are complete and committed and tagged.
+
+  git clone git://git.savannah.gnu.org/make.git make-release
+
+  cd make-release
+
+  <run the commands above to build the release>
+
+  make upload-alpha             # for alpha.gnu.org (pre-releases)
+       -OR-
+  make upload-ftp               # for ftp.gnu.org (official releases)
+
+Depending on your distribution (whether GnuPG is integrated with your keyring
+etc.) it will either pop up a window asking for your GPG key passphrase one
+time, or else it will use the CLI to ask for the GPG passphrase _THREE_ times.
+Sigh.
+
+
+For both final releases and pre-releases, send an email with the URL of
+the package to the GNU translation robot to allow the translators to
+work on it:
+
+     <coordinator@translationproject.org>
+
+
+Where to Announce
+-----------------
+
+Create the announcement in a text file, using 'git shortlog',
+then sign it with GPG:
+
+  gpg --clearsign <announcement.txt>
+
+Or, use your mail client's PGP/GPG signing capabilities.
+
+Announce the release:
+
+  * For release candidate builds:
+    To:  bug-make@gnu.org
+    CC:  coordinator@translationproject.org
+    BCC: help-make@gnu.org, make-w32@gnu.org, make-alpha@gnu.org
+
+  * For release builds
+    To:  info-gnu@gnu.org, bug-make@gnu.org
+    CC:  coordinator@translationproject.org
+    BCC: help-make@gnu.org, make-w32@gnu.org, make-alpha@gnu.org
+
+    * Add a news item to the Savannah project site.
+    * Add an update to freecode.com (nee freshmeat.net)
+
+
+Appendix A - For The Brave
+--------------------------
+
+For those of you who trust me implicitly, or are just brave (or
+foolhardy), here is a canned sequence of commands to build a GNU make
+distribution package from a virgin Git source checkout (assuming all the
+prerequisites are available of course).
+
+This list is eminently suitable for a quick swipe o' the mouse and a
+swift click o' mouse-2 into an xterm.  Go for it!
+
+autoreconf -i
+./configure
+make update
+make
+make check
+
+Or, for a debugging version:
+
+autoreconf -i && ./configure CFLAGS=-g && make update && make && make check
+
+Or, all-in-one:
+
+autoreconf -i && ./configure && make update && make && make check
diff --git a/src/kmk/README.template b/src/kmk/README.template
new file mode 100644
index 0000000..7739faa
--- /dev/null
+++ b/src/kmk/README.template
@@ -0,0 +1,178 @@
+This directory contains the %VERSION% release of GNU Make.
+
+See the file NEWS for the user-visible changes from previous releases.
+In addition, there have been bugs fixed.
+
+Please check the system-specific notes below for any caveats related to
+your operating system.
+
+For general building and installation instructions, see the file INSTALL.
+
+If you need to build GNU Make and have no other 'make' program to use,
+you can use the shell script 'build.sh' instead.  To do this, first run
+'configure' as described in INSTALL.  Then, instead of typing 'make' to
+build the program, type 'sh build.sh'.  This should compile the program
+in the current directory.  Then you will have a Make program that you can
+use for './make install', or whatever else.
+
+Some systems' Make programs are broken and cannot process the Makefile for
+GNU Make.  If you get errors from your system's Make when building GNU
+Make, try using 'build.sh' instead.
+
+
+GNU Make is free software.  See the file COPYING for copying conditions.
+GNU Make is copyright by the Free Software Foundation.  Copyright notices
+condense sequential years into a range; e.g. "1987-1994" means all years
+from 1987 to 1994 inclusive.
+
+Downloading
+-----------
+
+GNU Make can be obtained in many different ways.  See a description here:
+
+  http://www.gnu.org/software/software.html
+
+
+Documentation
+-------------
+
+GNU make is fully documented in the GNU Make manual, which is contained
+in this distribution as the file make.texinfo.  You can also find
+on-line and preformatted (PostScript and DVI) versions at the FSF's web
+site.  There is information there about ordering hardcopy documentation.
+
+  http://www.gnu.org/
+  http://www.gnu.org/doc/doc.html
+  http://www.gnu.org/manual/manual.html
+
+
+Development
+-----------
+
+GNU Make development is hosted by Savannah, the FSF's online development
+management tool.  Savannah is here:
+
+  http://savannah.gnu.org
+
+And the GNU Make development page is here:
+
+  http://savannah.gnu.org/projects/make/
+
+You can find most information concerning the development of GNU Make at
+this site.
+
+
+Bug Reporting
+-------------
+
+You can send GNU make bug reports to <bug-make@gnu.org>.  Please see the
+section of the GNU make manual entitled 'Problems and Bugs' for
+information on submitting useful and complete bug reports.
+
+You can also use the online bug tracking system in the Savannah GNU Make
+project to submit new problem reports or search for existing ones:
+
+  http://savannah.gnu.org/bugs/?group=make
+
+If you need help using GNU make, try these forums:
+
+  help-make@gnu.org
+  help-utils@gnu.org
+  news:gnu.utils.help
+  news:gnu.utils.bug
+
+
+Git Access
+----------
+
+The GNU make source repository is available via Git from the
+GNU Savannah Git server; look here for details:
+
+  http://savannah.gnu.org/git/?group=make
+
+Please note: you won't be able to build GNU make from Git without
+installing appropriate maintainer's tools, such as GNU m4, automake,
+autoconf, Perl, GNU make, and GCC.  See the README.git file for hints on
+how to build GNU make once these tools are available.  We make no
+guarantees about the contents or quality of the latest code in the Git
+repository: it is not unheard of for code that is known to be broken to
+be checked in.  Use at your own risk.
+
+
+System-specific Notes
+---------------------
+
+It has been reported that the XLC 1.2 compiler on AIX 3.2 is buggy such
+that if you compile make with 'cc -O' on AIX 3.2, it will not work
+correctly.  It is said that using 'cc' without '-O' does work.
+
+The standard /bin/sh on SunOS 4.1.3_U1 and 4.1.4 is broken and cannot be
+used to configure GNU make.  Please install a different shell such as
+bash or pdksh in order to run "configure".  See this message for more
+information:
+  http://mail.gnu.org/archive/html/bug-autoconf/2003-10/msg00190.html
+
+One area that is often a problem in configuration and porting is the code
+to check the system's current load average.  To make it easier to test and
+debug this code, you can do 'make check-loadavg' to see if it works
+properly on your system.  (You must run 'configure' beforehand, but you
+need not build Make itself to run this test.)
+
+Another potential source of porting problems is the support for large
+files (LFS) in configure for those operating systems that provide it.
+Please report any bugs that you find in this area.  If you run into
+difficulties, then as a workaround you should be able to disable LFS by
+adding the '--disable-largefile' option to the 'configure' script.
+
+On systems that support micro- and nano-second timestamp values and
+where stat(2) provides this information, GNU make will use it when
+comparing timestamps to get the most accurate possible result.  However,
+note that many current implementations of tools that *set* timestamps do
+not preserve micro- or nano-second granularity.  This means that "cp -p"
+and other similar tools (tar, etc.) may not exactly duplicate timestamps
+with micro- and nano-second granularity on some systems.  If your build
+system contains rules that depend on proper behavior of tools like "cp
+-p", you should consider using the .LOW_RESOLUTION_TIME pseudo-target to
+force make to treat them properly.  See the manual for details.
+
+
+Ports
+-----
+
+  - See README.customs for details on integrating GNU make with the
+    Customs distributed build environment from the Pmake distribution.
+
+  - See README.VMS for details about GNU Make on OpenVMS.
+
+  - See README.Amiga for details about GNU Make on AmigaDOS.
+
+  - See README.W32 for details about GNU Make on Windows NT, 95, or 98.
+
+  - See README.DOS for compilation instructions on MS-DOS and MS-Windows
+    using DJGPP tools.
+
+    A precompiled binary of the MSDOS port of GNU Make is available as part
+    of DJGPP; see the WWW page http://www.delorie.com/djgpp/ for more
+    information.
+
+Please note there are two _separate_ ports of GNU make for Microsoft
+systems: a native Windows tool built with (for example) MSVC or Cygwin,
+and a DOS-based tool built with DJGPP.  Please be sure you are looking
+at the right README!
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/SCOPTIONS b/src/kmk/SCOPTIONS
new file mode 100644
index 0000000..f89daae
--- /dev/null
+++ b/src/kmk/SCOPTIONS
@@ -0,0 +1,13 @@
+ERRORREXX
+OPTIMIZE
+NOVERSION
+OPTIMIZERTIME
+OPTIMIZERALIAS
+DEFINE INCLUDEDIR="include:"
+DEFINE LIBDIR="lib:"
+DEFINE NO_ALLOCA
+DEFINE NO_FLOAT
+DEFINE NO_ARCHIVES
+IGNORE=161
+IGNORE=100
+STARTUP=cres
diff --git a/src/kmk/SMakefile.template b/src/kmk/SMakefile.template
new file mode 100644
index 0000000..1b60d85
--- /dev/null
+++ b/src/kmk/SMakefile.template
@@ -0,0 +1,218 @@
+# -*-Makefile-*- for building GNU make with smake
+#
+# NOTE: If you have no 'make' program at all to process this makefile,
+# run 'build.sh' instead.
+#
+# Copyright (C) 1995-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#
+#	Makefile for GNU Make
+#
+
+# Ultrix 2.2 make doesn't expand the value of VPATH.
+VPATH = /make-%VERSION%/
+# This must repeat the value, because configure will remove 'VPATH = .'.
+srcdir = /make-%VERSION%/
+
+CC = sc
+RM = delete
+MAKE = smake
+
+CFLAGS =
+CPPFLAGS =
+LDFLAGS =
+
+# Define these for your system as follows:
+#	-DNO_ARCHIVES		To disable 'ar' archive support.
+#	-DNO_FLOAT		To avoid using floating-point numbers.
+#	-DENUM_BITFIELDS	If the compiler isn't GCC but groks enum foo:2.
+#				Some compilers apparently accept this
+#				without complaint but produce losing code,
+#				so beware.
+# NeXT 1.0a uses an old version of GCC, which required -D__inline=inline.
+# See also 'config.h'.
+defines =
+
+# Which flavor of remote job execution support to use.
+# The code is found in 'remote-$(REMOTE).c'.
+REMOTE = stub
+
+# If you are using the GNU C library, or have the GNU getopt functions in
+# your C library, you can comment these out.
+GETOPT = getopt.o getopt1.o
+GETOPT_SRC = $(srcdir)getopt.c $(srcdir)getopt1.c $(srcdir)getopt.h
+
+# If you are using the GNU C library, or have the GNU glob functions in
+# your C library, you can comment this out.  GNU make uses special hooks
+# into the glob functions to be more efficient (by using make's directory
+# cache for globbing), so you must use the GNU functions even if your
+# system's C library has the 1003.2 glob functions already.  Also, the glob
+# functions in the AIX and HPUX C libraries are said to be buggy.
+GLOB = Lib glob/glob.lib
+
+# If your system doesn't have alloca, or the one provided is bad, define this.
+ALLOCA = alloca.o
+ALLOCA_SRC = $(srcdir)alloca.c
+
+# If your system needs extra libraries loaded in, define them here.
+# System V probably need -lPW for alloca.  HP-UX 7.0's alloca in
+# libPW.a is broken on HP9000s300 and HP9000s400 machines.  Use
+# alloca.c instead on those machines.
+LOADLIBES =
+
+# Any extra object files your system needs.
+extras = amiga.o
+
+# Common prefix for machine-independent installed files.
+prefix =
+# Common prefix for machine-dependent installed files.
+exec_prefix =
+
+# Directory to install 'make' in.
+bindir = sc:c
+# Directory to find libraries in for '-lXXX'.
+libdir = lib:
+# Directory to search by default for included makefiles.
+includedir = include:
+# Directory to install the Info files in.
+infodir = doc:
+# Directory to install the man page in.
+mandir = t:
+# Number to put on the man page filename.
+manext = 1
+# Prefix to put on installed 'make' binary file name.
+binprefix =
+# Prefix to put on installed 'make' man page file name.
+manprefix = $(binprefix)
+
+# Whether or not make needs to be installed setgid.
+# The value should be either 'true' or 'false'.
+# On many systems, the getloadavg function (used to implement the '-l'
+# switch) will not work unless make is installed setgid kmem.
+install_setgid = false
+# Install make setgid to this group so it can read /dev/kmem.
+group = sys
+
+# Program to install 'make'.
+INSTALL_PROGRAM = copy
+# Program to install the man page.
+INSTALL_DATA = copy
+# Generic install program.
+INSTALL = copy
+
+# Program to format Texinfo source into Info files.
+MAKEINFO = makeinfo
+# Program to format Texinfo source into DVI files.
+TEXI2DVI = texi2dvi
+
+# Programs to make tags files.
+ETAGS = etags -w
+CTAGS = ctags -w
+
+#guile = guile.o
+
+objs = commands.o job.o dir.o file.o misc.o main.o read.o remake.o   \
+       rule.o implicit.o default.o variable.o expand.o function.o    \
+       vpath.o version.o ar.o arscan.o signame.o strcache.o hash.o   \
+       output.o remote-$(REMOTE).o $(GLOB) $(GETOPT) $(ALLOCA)       \
+       $(extras) $(guile)
+
+srcs = $(srcdir)commands.c $(srcdir)job.c $(srcdir)dir.c             \
+       $(srcdir)file.c $(srcdir)getloadavg.c $(srcdir)misc.c         \
+       $(srcdir)main.c $(srcdir)read.c $(srcdir)remake.c             \
+       $(srcdir)rule.c $(srcdir)implicit.c $(srcdir)default.c        \
+       $(srcdir)variable.c $(srcdir)expand.c $(srcdir)function.c     \
+       $(srcdir)vpath.c $(srcdir)version.c $(srcdir)hash.c           \
+       $(srcdir)guile.c $(srcdir)remote-$(REMOTE).c                  \
+       $(srcdir)ar.c $(srcdir)arscan.c $(srcdir)strcache.c           \
+       $(srcdir)signame.c $(srcdir)signame.h $(GETOPT_SRC)           \
+       $(srcdir)commands.h $(srcdir)dep.h $(srcdir)file.h            \
+       $(srcdir)job.h $(srcdir)makeint.h $(srcdir)rule.h             \
+       $(srcdir)output.c $(srcdir)output.h                           \
+       $(srcdir)variable.h $(ALLOCA_SRC) $(srcdir)config.h.in
+
+
+.SUFFIXES:
+.SUFFIXES: .o .c .h .ps .dvi .info .texinfo
+
+all: make
+info: make.info
+dvi: make.dvi
+# Some makes apparently use .PHONY as the default goal if it is before 'all'.
+.PHONY: all check info dvi
+
+make.info: make.texinfo
+	$(MAKEINFO) -I$(srcdir) $(srcdir)make.texinfo -o make.info
+
+make.dvi: make.texinfo
+	$(TEXI2DVI) $(srcdir)make.texinfo
+
+make.ps: make.dvi
+	dvi2ps make.dvi > make.ps
+
+make: $(objs) glob/glob.lib
+	$(CC) Link $(LDFLAGS) $(objs) $(LOADLIBES) To make.new
+	-delete quiet make
+	rename make.new make
+
+# -I. is needed to find config.h in the build directory.
+.c.o:
+	$(CC) $(defines) IDir "" IDir $(srcdir)glob \
+	      $(CPPFLAGS) $(CFLAGS) $< $(OUTPUT_OPTION)
+
+glob/glob.lib:
+	execute <<
+	    cd glob
+	    smake
+<
+
+tagsrcs = $(srcs) $(srcdir)remote-*.c
+TAGS: $(tagsrcs)
+	$(ETAGS) $(tagsrcs)
+tags: $(tagsrcs)
+	$(CTAGS) $(tagsrcs)
+
+.PHONY: install installdirs
+install:
+	copy make sc:c
+
+loadavg: loadavg.c config.h
+	$(CC) $(defines) -DTEST -I. -I$(srcdir) $(CFLAGS) $(LDFLAGS) \
+	      loadavg.c $(LOADLIBES) -o $@
+
+clean: glob-clean
+	-$(RM) -f make loadavg *.o core make.dvi
+
+distclean: clean glob-realclean
+	-$(RM) -f Makefile config.h config.status build.sh
+	-$(RM) -f config.log config.cache
+	-$(RM) -f TAGS tags
+	-$(RM) -f make.?? make.??s make.log make.toc make.*aux
+	-$(RM) -f loadavg.c
+
+realclean: distclean
+	-$(RM) -f make.info*
+
+mostlyclean: clean
+
+.PHONY: glob-clean glob-realclean
+
+glob-clean glob-realclean:
+	execute <<
+	cd glob
+	smake $@
+<
diff --git a/src/kmk/TODO.private b/src/kmk/TODO.private
new file mode 100644
index 0000000..a56827a
--- /dev/null
+++ b/src/kmk/TODO.private
@@ -0,0 +1,117 @@
+                                                            -*-Indented-Text-*-
+GNU Make TODO List
+------------------
+
+This list comes both from the authors and from users of GNU make.
+
+They are listed in no particular order!
+
+Also, I don't guarantee that all of them will be ultimately deemed "good
+ideas" and implemented.  These are just the ones that, at first blush,
+seem to have some merit (and that I can remember).
+
+However, if you see something here you really, really want, speak up.
+All other things being equal, I will tend to implement things that seem
+to maximize user satisfaction.
+
+If you want to implement some of them yourself, barring the ones I've
+marked below, have at it!  Please contact me first to let me know you're
+working on it, and give me some info about the design--and, critically,
+information about any user-visible syntax change, etc.
+
+
+The Top Item
+------------
+
+If you know perl (or want to learn DejaGNU or similar), the number one
+priority on my list of things I don't have time to do right now is
+fixing up the GNU make test suite.  Most importantly it needs to be made
+"parallelizable", so more than one regression can run at the same time
+(essentially, make the "work" directory local).  Also, the CWD during
+the test should be in the work directory or, better, a test-specific
+temporary directory so each test gets a new directory; right now
+sometimes tests leak files into the main directory which causes
+subsequent tests to fail (some tests may need to be tweaked).  Beyond
+that, any cleanup done to make writing, reading, or handling tests
+simpler would be great!  Please feel free to make whatever changes you
+like to the current tests, given some high-level goals, and that you'll
+port the current tests to whatever you do :).
+
+
+The Rest of the List
+--------------------
+
+ 1) Option to check more than timestamps to determine if targets have
+    changed.  This is also a very big one.  It's _close_ to my plate :),
+    and I have very definite ideas about how I would like it done.
+    Please pick something else unless you must have this feature.  If
+    you try it, please work _extremely_ closely with me on it.
+
+ 1a) Possibly a special case of this is the .KEEP_STATE feature of Sun's
+     make.  Some great folks at W U. in Canada did an implementation of
+     this for a class project.  Their approach is reasonable and
+     workable, but doesn't really fit into my ideas for #2.  Maybe
+     that's OK.  I have paperwork for their work so if you want to do
+     this one talk to me to get what they've already done.
+
+     [K R Praveen <praveen@cair.res.in>]
+
+ 2) Currently you can use "%.foo %.bar : %.baz" to mean that one
+    invocation of the rule builds both targets.  GNU make needs a way to
+    do that for explicit rules, too.  I heard a rumor that some versions
+    of make all you to say "a.foo + a.bar : a.baz" to do this (i.e., a
+    "+" means one invocation builds both).  Don't know if this is the
+    best syntax or not... what if you say "a.foo + a.bar a.bam : a.baz";
+    what does that mean?
+
+ 3) Multi-token pattern rule matching (allow %1/%2.c : %1/obj/%2.o,
+    etc., or something like that).  Maybe using regex?
+
+ 4) Provide a .TARGETS variable, containing the names of the targets
+    defined in the makefile.
+
+    Actually, I now think a $(targets ...) function, at least, might be
+    better than a MAKETARGETS variable.  The argument would be types of
+    targets to list: "phony" is the most useful one.  I suppose
+    "default" might also be useful.  Maybe some others; check the
+    bitfields to see what might be handy.
+
+ 5) Some sort of operating-system independent way of handling paths
+    would be outstanding, so makefiles can be written for UNIX, VMS,
+    DOS, MS-Windows, Amiga, etc. with a minimum of specialization.
+
+    Or, perhaps related/instead of, some sort of meta-quoting syntax so
+    make can deal with filenames containing spaces, colons, etc.  I
+    dunno, maybe something like $[...]?  This may well not be worth
+    doing until #1 is done.
+
+ 6) Right now the .PRECIOUS, .INTERMEDIATE, and .SECONDARY
+    pseudo-targets have different capabilities.  For example, .PRECIOUS
+    can take a "%", the others can't.  Etc.  These should all work the
+    same, insofar as that makes sense.
+
+ 7) Improved debugging/logging/etc. capabilities.  Part of this is done:
+    I introduced a number of debugging enhancements.  Tim Magill is (I
+    think) looking into options to control output more selectively.
+    One thing I want to do in debugging is add a flag to allow debugging
+    of variables as they're expanded (!).  This would be incredibly
+    verbose, but could be invaluable when nothing else seems to work and
+    you just can't figure it out.  The way variables are expanded now
+    means this isn't 100% trivial, but it probably won't be hard.
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1997-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/acinclude.m4 b/src/kmk/acinclude.m4
new file mode 100644
index 0000000..a80bcb3
--- /dev/null
+++ b/src/kmk/acinclude.m4
@@ -0,0 +1,163 @@
+dnl acinclude.m4 -- Extra macros needed for GNU make.
+dnl
+dnl Automake will incorporate this into its generated aclocal.m4.
+dnl Copyright (C) 1998-2016 Free Software Foundation, Inc.
+dnl This file is part of GNU Make.
+dnl
+dnl GNU Make is free software; you can redistribute it and/or modify it under
+dnl the terms of the GNU General Public License as published by the Free
+dnl Software Foundation; either version 3 of the License, or (at your option)
+dnl any later version.
+dnl
+dnl GNU Make is distributed in the hope that it will be useful, but WITHOUT
+dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+dnl FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.
+dnl more details.
+dnl
+dnl You should have received a copy of the GNU General Public License along
+dnl with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+dnl ---------------------------------------------------------------------------
+dnl Got this from the lynx 2.8 distribution.
+dnl by T.E.Dickey <dickey@clark.net>
+dnl and Jim Spath <jspath@mail.bcpl.lib.md.us>
+dnl and Philippe De Muyter <phdm@macqel.be>
+dnl
+dnl Created: 1997/1/28
+dnl Updated: 1997/12/23
+dnl ---------------------------------------------------------------------------
+dnl After checking for functions in the default $LIBS, make a further check
+dnl for the functions that are netlib-related (these aren't always in the
+dnl libc, etc., and have to be handled specially because there are conflicting
+dnl and broken implementations.
+dnl Common library requirements (in order):
+dnl	-lresolv -lsocket -lnsl
+dnl	-lnsl -lsocket
+dnl	-lsocket
+dnl	-lbsd
+AC_DEFUN([CF_NETLIBS],[
+cf_test_netlibs=no
+AC_MSG_CHECKING(for network libraries)
+AC_CACHE_VAL(cf_cv_netlibs,[
+AC_MSG_RESULT(working...)
+cf_cv_netlibs=""
+cf_test_netlibs=yes
+AC_CHECK_FUNCS(gethostname,,[
+	CF_RECHECK_FUNC(gethostname,nsl,cf_cv_netlibs,[
+		CF_RECHECK_FUNC(gethostname,socket,cf_cv_netlibs)])])
+#
+# FIXME:  sequent needs this library (i.e., -lsocket -linet -lnsl), but
+# I don't know the entrypoints - 97/7/22 TD
+AC_CHECK_LIB(inet,main,cf_cv_netlibs="-linet $cf_cv_netlibs")
+#
+if test "$ac_cv_func_lsocket" != no ; then
+AC_CHECK_FUNCS(socket,,[
+	CF_RECHECK_FUNC(socket,socket,cf_cv_netlibs,[
+		CF_RECHECK_FUNC(socket,bsd,cf_cv_netlibs)])])
+fi
+#
+AC_CHECK_FUNCS(gethostbyname,,[
+	CF_RECHECK_FUNC(gethostbyname,nsl,cf_cv_netlibs)])
+])
+LIBS="$LIBS $cf_cv_netlibs"
+test $cf_test_netlibs = no && echo "$cf_cv_netlibs" >&AC_FD_MSG
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl Re-check on a function to see if we can pick it up by adding a library.
+dnl	$1 = function to check
+dnl	$2 = library to check in
+dnl	$3 = environment to update (e.g., $LIBS)
+dnl	$4 = what to do if this fails
+dnl
+dnl This uses 'unset' if the shell happens to support it, but leaves the
+dnl configuration variable set to 'unknown' if not.  This is a little better
+dnl than the normal autoconf test, which gives misleading results if a test
+dnl for the function is made (e.g., with AC_CHECK_FUNC) after this macro is
+dnl used (autoconf does not distinguish between a null token and one that is
+dnl set to 'no').
+AC_DEFUN([CF_RECHECK_FUNC],[
+AC_CHECK_LIB($2,$1,[
+	CF_UPPER(cf_tr_func,$1)
+	AC_DEFINE_UNQUOTED(HAVE_$cf_tr_func,1,[Define if you have function $1])
+	ac_cv_func_$1=yes
+	$3="-l$2 [$]$3"],[
+	ac_cv_func_$1=unknown
+	unset ac_cv_func_$1 2>/dev/null
+	$4],
+	[[$]$3])
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl Make an uppercase version of a variable
+dnl $1=uppercase($2)
+AC_DEFUN([CF_UPPER],
+[
+changequote(,)dnl
+$1=`echo $2 | tr '[a-z]' '[A-Z]'`
+changequote([,])dnl
+])dnl
+
+
+dnl ---------------------------------------------------------------------------
+dnl From Paul Eggert <eggert@twinsun.com>
+dnl Update for Darwin by Troy Runkel <Troy.Runkel@mathworks.com>
+dnl Update for AIX by Olexiy Buyanskyy (Savannah bug 32485)
+
+AC_DEFUN([AC_STRUCT_ST_MTIM_NSEC],
+ [AC_CACHE_CHECK([for nanoseconds field of struct stat],
+   ac_cv_struct_st_mtim_nsec,
+   [ac_save_CPPFLAGS="$CPPFLAGS"
+    ac_cv_struct_st_mtim_nsec=no
+    # st_mtim.tv_nsec -- the usual case
+    # st_mtim._tv_nsec -- Solaris 2.6, if
+    #	(defined _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED == 1
+    #	 && !defined __EXTENSIONS__)
+    # st_mtim.st__tim.tv_nsec -- UnixWare 2.1.2
+    # st_mtime_n -- AIX 5.2 and above
+    # st_mtimespec.tv_nsec -- Darwin (Mac OSX)
+    for ac_val in st_mtim.tv_nsec st_mtim._tv_nsec st_mtim.st__tim.tv_nsec st_mtime_n st_mtimespec.tv_nsec; do
+      CPPFLAGS="$ac_save_CPPFLAGS -DST_MTIM_NSEC=$ac_val"
+      AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/stat.h>
+	], [struct stat s; s.ST_MTIM_NSEC;],
+        [ac_cv_struct_st_mtim_nsec=$ac_val; break])
+    done
+    CPPFLAGS="$ac_save_CPPFLAGS"
+   ])
+
+  if test $ac_cv_struct_st_mtim_nsec != no; then
+    AC_DEFINE_UNQUOTED([ST_MTIM_NSEC], [$ac_cv_struct_st_mtim_nsec],
+	[Define if struct stat contains a nanoseconds field])
+  fi
+ ]
+)
+
+dnl bird: Copy of above for atime
+AC_DEFUN([AC_STRUCT_ST_ATIM_NSEC],
+ [AC_CACHE_CHECK([for nanoseconds access time field of struct stat],
+   ac_cv_struct_st_atim_nsec,
+   [ac_save_CPPFLAGS="$CPPFLAGS"
+    ac_cv_struct_st_atim_nsec=no
+    # st_atim.tv_nsec -- the usual case
+    # st_atim._tv_nsec -- Solaris 2.6, if
+    #	(defined _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED == 1
+    #	 && !defined __EXTENSIONS__)
+    # st_atim.st__tim.tv_nsec -- UnixWare 2.1.2
+    # st_atime_n -- AIX 5.2 and above
+    # st_atimespec.tv_nsec -- Darwin (Mac OSX)
+    for ac_val in st_atim.tv_nsec st_atim._tv_nsec st_atim.st__tim.tv_nsec st_atime_n st_atimespec.tv_nsec; do
+      CPPFLAGS="$ac_save_CPPFLAGS -DST_ATIM_NSEC=$ac_val"
+      AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/stat.h>
+	], [struct stat s; s.ST_ATIM_NSEC;],
+        [ac_cv_struct_st_atim_nsec=$ac_val; break])
+    done
+    CPPFLAGS="$ac_save_CPPFLAGS"
+   ])
+
+  if test $ac_cv_struct_st_atim_nsec != no; then
+    AC_DEFINE_UNQUOTED([ST_ATIM_NSEC], [$ac_cv_struct_st_atim_nsec],
+	[Define if struct stat contains a nanoseconds field])
+  fi
+ ]
+)
+
diff --git a/src/kmk/alloca.c b/src/kmk/alloca.c
new file mode 100644
index 0000000..02ac921
--- /dev/null
+++ b/src/kmk/alloca.c
@@ -0,0 +1,503 @@
+/* alloca.c -- allocate automatically reclaimed memory
+   (Mostly) portable public-domain implementation -- D A Gwyn
+
+   This implementation of the PWB library alloca function,
+   which is used to allocate space off the run-time stack so
+   that it is automatically reclaimed upon procedure exit,
+   was inspired by discussions with J. Q. Johnson of Cornell.
+   J.Otto Tennant <jot@cray.com> contributed the Cray support.
+
+   There are some preprocessor constants that can
+   be defined when compiling for your specific system, for
+   improved efficiency; however, the defaults should be okay.
+
+   The general concept of this implementation is to keep
+   track of all alloca-allocated blocks, and reclaim any
+   that are found to be deeper in the stack than the current
+   invocation.  This heuristic does not reclaim storage as
+   soon as it becomes invalid, but it will do so eventually.
+
+   As a special case, alloca(0) reclaims storage without
+   allocating any.  It is a good idea to use alloca(0) in
+   your main control loop, etc. to force garbage collection.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef emacs
+#include "blockinput.h"
+#endif
+
+/* If compiling with GCC 2, this file's not needed.  */
+#if !defined (__GNUC__) || __GNUC__ < 2
+
+/* If someone has defined alloca as a macro,
+   there must be some other way alloca is supposed to work.  */
+#ifndef alloca
+
+#ifdef emacs
+#ifdef static
+/* actually, only want this if static is defined as ""
+   -- this is for usg, in which emacs must undefine static
+   in order to make unexec workable
+   */
+#ifndef STACK_DIRECTION
+you
+lose
+-- must know STACK_DIRECTION at compile-time
+#endif /* STACK_DIRECTION undefined */
+#endif /* static */
+#endif /* emacs */
+
+/* If your stack is a linked list of frames, you have to
+   provide an "address metric" ADDRESS_FUNCTION macro.  */
+
+#if defined (CRAY) && defined (CRAY_STACKSEG_END)
+long i00afunc ();
+#define ADDRESS_FUNCTION(arg) (char *) i00afunc (&(arg))
+#else
+#define ADDRESS_FUNCTION(arg) &(arg)
+#endif
+
+#if __STDC__
+typedef void *pointer;
+#else
+typedef char *pointer;
+#endif
+
+#ifndef NULL
+#define	NULL	0
+#endif
+
+/* Different portions of Emacs need to call different versions of
+   malloc.  The Emacs executable needs alloca to call xmalloc, because
+   ordinary malloc isn't protected from input signals.  On the other
+   hand, the utilities in lib-src need alloca to call malloc; some of
+   them are very simple, and don't have an xmalloc routine.
+
+   Non-Emacs programs expect this to call use xmalloc.
+
+   Callers below should use malloc.  */
+
+#ifndef emacs
+#define malloc xmalloc
+#endif
+extern pointer malloc ();
+
+/* Define STACK_DIRECTION if you know the direction of stack
+   growth for your system; otherwise it will be automatically
+   deduced at run-time.
+
+   STACK_DIRECTION > 0 => grows toward higher addresses
+   STACK_DIRECTION < 0 => grows toward lower addresses
+   STACK_DIRECTION = 0 => direction of growth unknown  */
+
+#ifndef STACK_DIRECTION
+#define	STACK_DIRECTION	0	/* Direction unknown.  */
+#endif
+
+#if STACK_DIRECTION != 0
+
+#define	STACK_DIR	STACK_DIRECTION	/* Known at compile-time.  */
+
+#else /* STACK_DIRECTION == 0; need run-time code.  */
+
+static int stack_dir;		/* 1 or -1 once known.  */
+#define	STACK_DIR	stack_dir
+
+static void
+find_stack_direction (void)
+{
+  static char *addr = NULL;	/* Address of first 'dummy', once known.  */
+  auto char dummy;		/* To get stack address.  */
+
+  if (addr == NULL)
+    {				/* Initial entry.  */
+      addr = ADDRESS_FUNCTION (dummy);
+
+      find_stack_direction ();	/* Recurse once.  */
+    }
+  else
+    {
+      /* Second entry.  */
+      if (ADDRESS_FUNCTION (dummy) > addr)
+	stack_dir = 1;		/* Stack grew upward.  */
+      else
+	stack_dir = -1;		/* Stack grew downward.  */
+    }
+}
+
+#endif /* STACK_DIRECTION == 0 */
+
+/* An "alloca header" is used to:
+   (a) chain together all alloca'ed blocks;
+   (b) keep track of stack depth.
+
+   It is very important that sizeof(header) agree with malloc
+   alignment chunk size.  The following default should work okay.  */
+
+#ifndef	ALIGN_SIZE
+#define	ALIGN_SIZE	sizeof(double)
+#endif
+
+typedef union hdr
+{
+  char align[ALIGN_SIZE];	/* To force sizeof(header).  */
+  struct
+    {
+      union hdr *next;		/* For chaining headers.  */
+      char *deep;		/* For stack depth measure.  */
+    } h;
+} header;
+
+static header *last_alloca_header = NULL;	/* -> last alloca header.  */
+
+/* Return a pointer to at least SIZE bytes of storage,
+   which will be automatically reclaimed upon exit from
+   the procedure that called alloca.  Originally, this space
+   was supposed to be taken from the current stack frame of the
+   caller, but that method cannot be made to work for some
+   implementations of C, for example under Gould's UTX/32.  */
+
+pointer
+alloca (unsigned size)
+{
+  auto char probe;		/* Probes stack depth: */
+  register char *depth = ADDRESS_FUNCTION (probe);
+
+#if STACK_DIRECTION == 0
+  if (STACK_DIR == 0)		/* Unknown growth direction.  */
+    find_stack_direction ();
+#endif
+
+  /* Reclaim garbage, defined as all alloca'd storage that
+     was allocated from deeper in the stack than currently.  */
+
+  {
+    register header *hp;	/* Traverses linked list.  */
+
+#ifdef emacs
+    BLOCK_INPUT;
+#endif
+
+    for (hp = last_alloca_header; hp != NULL;)
+      if ((STACK_DIR > 0 && hp->h.deep > depth)
+	  || (STACK_DIR < 0 && hp->h.deep < depth))
+	{
+	  register header *np = hp->h.next;
+
+	  free ((pointer) hp);	/* Collect garbage.  */
+
+	  hp = np;		/* -> next header.  */
+	}
+      else
+	break;			/* Rest are not deeper.  */
+
+    last_alloca_header = hp;	/* -> last valid storage.  */
+
+#ifdef emacs
+    UNBLOCK_INPUT;
+#endif
+  }
+
+  if (size == 0)
+    return NULL;		/* No allocation required.  */
+
+  /* Allocate combined header + user data storage.  */
+
+  {
+    register pointer new = malloc (sizeof (header) + size);
+    /* Address of header.  */
+
+    if (new == 0)
+      abort();
+
+    ((header *) new)->h.next = last_alloca_header;
+    ((header *) new)->h.deep = depth;
+
+    last_alloca_header = (header *) new;
+
+    /* User storage begins just after header.  */
+
+    return (pointer) ((char *) new + sizeof (header));
+  }
+}
+
+#if defined (CRAY) && defined (CRAY_STACKSEG_END)
+
+#ifdef DEBUG_I00AFUNC
+#include <stdio.h>
+#endif
+
+#ifndef CRAY_STACK
+#define CRAY_STACK
+#ifndef CRAY2
+/* Stack structures for CRAY-1, CRAY X-MP, and CRAY Y-MP */
+struct stack_control_header
+  {
+    long shgrow:32;		/* Number of times stack has grown.  */
+    long shaseg:32;		/* Size of increments to stack.  */
+    long shhwm:32;		/* High water mark of stack.  */
+    long shsize:32;		/* Current size of stack (all segments).  */
+  };
+
+/* The stack segment linkage control information occurs at
+   the high-address end of a stack segment.  (The stack
+   grows from low addresses to high addresses.)  The initial
+   part of the stack segment linkage control information is
+   0200 (octal) words.  This provides for register storage
+   for the routine which overflows the stack.  */
+
+struct stack_segment_linkage
+  {
+    long ss[0200];		/* 0200 overflow words.  */
+    long sssize:32;		/* Number of words in this segment.  */
+    long ssbase:32;		/* Offset to stack base.  */
+    long:32;
+    long sspseg:32;		/* Offset to linkage control of previous
+				   segment of stack.  */
+    long:32;
+    long sstcpt:32;		/* Pointer to task common address block.  */
+    long sscsnm;		/* Private control structure number for
+				   microtasking.  */
+    long ssusr1;		/* Reserved for user.  */
+    long ssusr2;		/* Reserved for user.  */
+    long sstpid;		/* Process ID for pid based multi-tasking.  */
+    long ssgvup;		/* Pointer to multitasking thread giveup.  */
+    long sscray[7];		/* Reserved for Cray Research.  */
+    long ssa0;
+    long ssa1;
+    long ssa2;
+    long ssa3;
+    long ssa4;
+    long ssa5;
+    long ssa6;
+    long ssa7;
+    long sss0;
+    long sss1;
+    long sss2;
+    long sss3;
+    long sss4;
+    long sss5;
+    long sss6;
+    long sss7;
+  };
+
+#else /* CRAY2 */
+/* The following structure defines the vector of words
+   returned by the STKSTAT library routine.  */
+struct stk_stat
+  {
+    long now;			/* Current total stack size.  */
+    long maxc;			/* Amount of contiguous space which would
+				   be required to satisfy the maximum
+				   stack demand to date.  */
+    long high_water;		/* Stack high-water mark.  */
+    long overflows;		/* Number of stack overflow ($STKOFEN) calls.  */
+    long hits;			/* Number of internal buffer hits.  */
+    long extends;		/* Number of block extensions.  */
+    long stko_mallocs;		/* Block allocations by $STKOFEN.  */
+    long underflows;		/* Number of stack underflow calls ($STKRETN).  */
+    long stko_free;		/* Number of deallocations by $STKRETN.  */
+    long stkm_free;		/* Number of deallocations by $STKMRET.  */
+    long segments;		/* Current number of stack segments.  */
+    long maxs;			/* Maximum number of stack segments so far.  */
+    long pad_size;		/* Stack pad size.  */
+    long current_address;	/* Current stack segment address.  */
+    long current_size;		/* Current stack segment size.  This
+				   number is actually corrupted by STKSTAT to
+				   include the fifteen word trailer area.  */
+    long initial_address;	/* Address of initial segment.  */
+    long initial_size;		/* Size of initial segment.  */
+  };
+
+/* The following structure describes the data structure which trails
+   any stack segment.  I think that the description in 'asdef' is
+   out of date.  I only describe the parts that I am sure about.  */
+
+struct stk_trailer
+  {
+    long this_address;		/* Address of this block.  */
+    long this_size;		/* Size of this block (does not include
+				   this trailer).  */
+    long unknown2;
+    long unknown3;
+    long link;			/* Address of trailer block of previous
+				   segment.  */
+    long unknown5;
+    long unknown6;
+    long unknown7;
+    long unknown8;
+    long unknown9;
+    long unknown10;
+    long unknown11;
+    long unknown12;
+    long unknown13;
+    long unknown14;
+  };
+
+#endif /* CRAY2 */
+#endif /* not CRAY_STACK */
+
+#ifdef CRAY2
+/* Determine a "stack measure" for an arbitrary ADDRESS.
+   I doubt that "lint" will like this much.  */
+
+static long
+i00afunc (long *address)
+{
+  struct stk_stat status;
+  struct stk_trailer *trailer;
+  long *block, size;
+  long result = 0;
+
+  /* We want to iterate through all of the segments.  The first
+     step is to get the stack status structure.  We could do this
+     more quickly and more directly, perhaps, by referencing the
+     $LM00 common block, but I know that this works.  */
+
+  STKSTAT (&status);
+
+  /* Set up the iteration.  */
+
+  trailer = (struct stk_trailer *) (status.current_address
+				    + status.current_size
+				    - 15);
+
+  /* There must be at least one stack segment.  Therefore it is
+     a fatal error if "trailer" is null.  */
+
+  if (trailer == 0)
+    abort ();
+
+  /* Discard segments that do not contain our argument address.  */
+
+  while (trailer != 0)
+    {
+      block = (long *) trailer->this_address;
+      size = trailer->this_size;
+      if (block == 0 || size == 0)
+	abort ();
+      trailer = (struct stk_trailer *) trailer->link;
+      if ((block <= address) && (address < (block + size)))
+	break;
+    }
+
+  /* Set the result to the offset in this segment and add the sizes
+     of all predecessor segments.  */
+
+  result = address - block;
+
+  if (trailer == 0)
+    {
+      return result;
+    }
+
+  do
+    {
+      if (trailer->this_size <= 0)
+	abort ();
+      result += trailer->this_size;
+      trailer = (struct stk_trailer *) trailer->link;
+    }
+  while (trailer != 0);
+
+  /* We are done.  Note that if you present a bogus address (one
+     not in any segment), you will get a different number back, formed
+     from subtracting the address of the first block.  This is probably
+     not what you want.  */
+
+  return (result);
+}
+
+#else /* not CRAY2 */
+/* Stack address function for a CRAY-1, CRAY X-MP, or CRAY Y-MP.
+   Determine the number of the cell within the stack,
+   given the address of the cell.  The purpose of this
+   routine is to linearize, in some sense, stack addresses
+   for alloca.  */
+
+static long
+i00afunc (long address)
+{
+  long stkl = 0;
+
+  long size, pseg, this_segment, stack;
+  long result = 0;
+
+  struct stack_segment_linkage *ssptr;
+
+  /* Register B67 contains the address of the end of the
+     current stack segment.  If you (as a subprogram) store
+     your registers on the stack and find that you are past
+     the contents of B67, you have overflowed the segment.
+
+     B67 also points to the stack segment linkage control
+     area, which is what we are really interested in.  */
+
+  stkl = CRAY_STACKSEG_END ();
+  ssptr = (struct stack_segment_linkage *) stkl;
+
+  /* If one subtracts 'size' from the end of the segment,
+     one has the address of the first word of the segment.
+
+     If this is not the first segment, 'pseg' will be
+     nonzero.  */
+
+  pseg = ssptr->sspseg;
+  size = ssptr->sssize;
+
+  this_segment = stkl - size;
+
+  /* It is possible that calling this routine itself caused
+     a stack overflow.  Discard stack segments which do not
+     contain the target address.  */
+
+  while (!(this_segment <= address && address <= stkl))
+    {
+#ifdef DEBUG_I00AFUNC
+      fprintf (stderr, "%011o %011o %011o\n", this_segment, address, stkl);
+#endif
+      if (pseg == 0)
+	break;
+      stkl = stkl - pseg;
+      ssptr = (struct stack_segment_linkage *) stkl;
+      size = ssptr->sssize;
+      pseg = ssptr->sspseg;
+      this_segment = stkl - size;
+    }
+
+  result = address - this_segment;
+
+  /* If you subtract pseg from the current end of the stack,
+     you get the address of the previous stack segment's end.
+     This seems a little convoluted to me, but I'll bet you save
+     a cycle somewhere.  */
+
+  while (pseg != 0)
+    {
+#ifdef DEBUG_I00AFUNC
+      fprintf (stderr, "%011o %011o\n", pseg, size);
+#endif
+      stkl = stkl - pseg;
+      ssptr = (struct stack_segment_linkage *) stkl;
+      size = ssptr->sssize;
+      pseg = ssptr->sspseg;
+      result += size;
+    }
+  return (result);
+}
+
+#endif /* not CRAY2 */
+#endif /* CRAY */
+
+#endif /* no alloca */
+#endif /* not GCC version 2 */
diff --git a/src/kmk/alloccache.c b/src/kmk/alloccache.c
new file mode 100644
index 0000000..54c28d5
--- /dev/null
+++ b/src/kmk/alloccache.c
@@ -0,0 +1,259 @@
+/* $Id: alloccache.c 3141 2018-03-14 21:58:32Z bird $ */
+/** @file
+ * alloccache - Fixed sized allocation cache.
+ *
+ * The rational for using an allocation cache, is that it is way faster
+ * than malloc+free on most systems.  It may be more efficient as well,
+ * depending on the way the heap implementes small allocations.  Also,
+ * with the incdep.c code being threaded, all heaps (except for MSC)
+ * ran into severe lock contention issues since both the main thread
+ * and the incdep worker thread was allocating a crazy amount of tiny
+ * allocations (struct dep, struct nameseq, ++).
+ *
+ * Darwin also showed a significant amount of time spent just executing
+ * free(), which is kind of silly.  The alloccache helps a bit here too.
+ */
+
+/*
+ * Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "makeint.h"
+#include "filedef.h"
+#include "dep.h"
+#include "debug.h"
+#include <assert.h>
+
+
+#ifdef CONFIG_WITH_ALLOC_CACHES
+
+/* Free am item.
+   This was not inlined because of aliasing issues arrising with GCC.
+   It is also in a separate file for this reason (it used to be in misc.c
+   but since free_dep_chain() was using it there, we ran the risk of it
+   being inlined and gcc screwing up).  */
+void
+alloccache_free (struct alloccache *cache, void *item)
+{
+#ifndef CONFIG_WITH_ALLOCCACHE_DEBUG
+  struct alloccache_free_ent *f = (struct alloccache_free_ent *)item;
+# if 0 /*ndef NDEBUG*/
+  struct alloccache_free_ent *c;
+  unsigned int i = 0;
+  for (c = cache->free_head; c != NULL; c = c->next, i++)
+    MY_ASSERT_MSG (c != f && i < 0x10000000,
+                   ("i=%u total_count=%u\n", i, cache->total_count));
+# endif
+
+  f->next = cache->free_head;
+  cache->free_head = f;
+  MAKE_STATS(cache->free_count++;);
+#else  /* CONFIG_WITH_ALLOCCACHE_DEBUG */
+
+  struct alloccache **ppcache = (struct alloccache **)item - 1;
+  MY_ASSERT_MSG (*ppcache == cache, ("*ppcache=%p cache=%p item=%p\n", *ppcache, cache, item));
+  *ppcache = NULL;
+  free(ppcache);
+#endif /* CONFIG_WITH_ALLOCCACHE_DEBUG */
+}
+
+/* Default allocator. */
+static void *
+alloccache_default_grow_alloc(void *ignore, unsigned int size)
+{
+  return xmalloc (size);
+}
+
+/* Worker for growing the cache. */
+struct alloccache_free_ent *
+alloccache_alloc_grow (struct alloccache *cache)
+{
+#ifndef CONFIG_WITH_ALLOCCACHE_DEBUG
+  void *item;
+  unsigned int items = (64*1024 - 32) / cache->size;
+  cache->free_start  = cache->grow_alloc (cache->grow_arg, items * cache->size);
+  cache->free_end    = cache->free_start + items * cache->size;
+  cache->total_count+= items;
+
+# ifndef NDEBUG /* skip the first item so the heap can detect free(). */
+  cache->total_count--;
+  cache->free_start += cache->size;
+# endif
+
+  item = cache->free_start;
+  cache->free_start += cache->size;
+  /* caller counts */
+  return (struct alloccache_free_ent *)item;
+#else  /* CONFIG_WITH_ALLOCCACHE_DEBUG */
+
+  /* Prefix the allocation with a cache pointer so alloccahce_free can better
+     catch incorrect calls. */
+  struct alloccache **ppcache = (struct alloccache **)xmalloc(sizeof(*ppcache) + cache->size);
+  *ppcache = cache;
+  return (struct alloccache_free_ent *)(ppcache + 1);
+#endif /* CONFIG_WITH_ALLOCCACHE_DEBUG */
+}
+
+/* List of alloc caches, for printing. */
+static struct alloccache *alloccache_head = NULL;
+
+/* Initializes an alloc cache */
+void
+alloccache_init (struct alloccache *cache, unsigned int size, const char *name,
+                 void *(*grow_alloc)(void *grow_arg, unsigned int size), void *grow_arg)
+{
+  unsigned act_size;
+
+  /* ensure OK alignment and min sizeof (struct alloccache_free_ent). */
+  if (size <= sizeof (struct alloccache_free_ent))
+    act_size = sizeof (struct alloccache_free_ent);
+  else if (size <= 32)
+    {
+      act_size = 4;
+      while (act_size < size)
+        act_size <<= 1;
+    }
+  else
+    act_size = (size + 31U) & ~(size_t)31;
+
+  /* align the structure. */
+  cache->free_start  = NULL;
+  cache->free_end    = NULL;
+  cache->free_head   = NULL;
+  cache->size        = act_size;
+  cache->total_count = 0;
+  cache->alloc_count = 0;
+  cache->free_count  = 0;
+  cache->name        = name;
+  cache->grow_arg    = grow_arg;
+  cache->grow_alloc  = grow_alloc ? grow_alloc : alloccache_default_grow_alloc;
+
+  /* link it. */
+  cache->next        = alloccache_head;
+  alloccache_head    = cache;
+}
+
+/* Terminate an alloc cache, free all the memory it contains. */
+void
+alloccache_term (struct alloccache *cache,
+                 void (*term_free)(void *term_arg, void *ptr, unsigned int size), void *term_arg)
+{
+    /*cache->size = 0;*/
+    (void)cache;
+    (void)term_free;
+    (void)term_arg;
+    /* FIXME: Implement memory segment tracking and cleanup. */
+}
+
+/* Joins to caches, unlinking the 2nd one. */
+void
+alloccache_join (struct alloccache *cache, struct alloccache *eat)
+{
+  assert (cache->size == eat->size);
+
+#if 0 /* probably a waste of time */ /* FIXME: Optimize joining, avoid all list walking. */
+  /* add the free list... */
+  if (eat->free_head)
+    {
+     unsigned int eat_in_use = eat->alloc_count - eat->free_count;
+     unsigned int dst_in_use = cache->alloc_count - cache->free_count;
+     if (!cache->free_head)
+       cache->free_head = eat->free_head;
+     else if (eat->total_count - eat_in_use < cache->total_count - dst_ins_use)
+       {
+         struct alloccache_free_ent *last = eat->free_head;
+         while (last->next)
+           last = last->next;
+         last->next = cache->free_head;
+         cache->free_head = eat->free_head;
+       }
+     else
+       {
+         struct alloccache_free_ent *last = cache->free_head;
+         while (last->next)
+           last = last->next;
+         last->next = eat->free_head;
+       }
+    }
+
+  /* ... and the free space. */
+  while (eat->free_start != eat->free_end)
+    {
+      struct alloccache_free_ent *f = (struct alloccache_free_ent *)eat->free_start;
+      eat->free_start += eat->size;
+      f->next = cache->free_head;
+      cache->free_head = f;
+    }
+
+  /* and statistics */
+  cache->alloc_count += eat->alloc_count;
+  cache->free_count  += eat->free_count;
+#else
+  /* and statistics */
+  cache->alloc_count += eat->alloc_count;
+  cache->free_count  += eat->free_count;
+#endif
+  cache->total_count += eat->total_count;
+
+  /* unlink and disable the eat cache */
+  if (alloccache_head == eat)
+    alloccache_head = eat->next;
+  else
+    {
+      struct alloccache *cur = alloccache_head;
+      while (cur->next != eat)
+        cur = cur->next;
+      assert (cur && cur->next == eat);
+      cur->next = eat->next;
+    }
+
+  eat->size = 0;
+  eat->free_end = eat->free_start = NULL;
+  eat->free_head = NULL;
+}
+
+/* Print one alloc cache. */
+void
+alloccache_print (struct alloccache *cache)
+{
+  printf (_("\n# Alloc Cache: %s\n"
+              "#  Items: size = %-3u  total = %-6u"),
+          cache->name, cache->size, cache->total_count);
+  MAKE_STATS(printf (_("  in-use = %-6lu"),
+                     cache->alloc_count - cache->free_count););
+  MAKE_STATS(printf (_("\n#         alloc calls = %-7lu  free calls = %-7lu"),
+                     cache->alloc_count, cache->free_count););
+  printf ("\n");
+}
+
+/* Print all alloc caches. */
+void
+alloccache_print_all (void)
+{
+  struct alloccache *cur;
+  puts ("");
+  for (cur = alloccache_head; cur; cur = cur->next)
+    alloccache_print (cur);
+}
+
+#endif /* CONFIG_WITH_ALLOC_CACHES */
+
diff --git a/src/kmk/amiga.c b/src/kmk/amiga.c
new file mode 100644
index 0000000..cfd0d08
--- /dev/null
+++ b/src/kmk/amiga.c
@@ -0,0 +1,117 @@
+/* Running commands on Amiga
+Copyright (C) 1995-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "variable.h"
+#include "amiga.h"
+#include <assert.h>
+#include <exec/memory.h>
+#include <dos/dostags.h>
+#include <proto/exec.h>
+#include <proto/dos.h>
+
+static const char Amiga_version[] = "$VER: Make 3.74.3 (12.05.96) \n"
+                    "Amiga Port by A. Digulla (digulla@home.lake.de)";
+
+int
+MyExecute (char **argv)
+{
+    char * buffer, * ptr;
+    char ** aptr;
+    int len = 0;
+    int status;
+
+    for (aptr=argv; *aptr; aptr++)
+    {
+        len += strlen (*aptr) + 4;
+    }
+
+    buffer = AllocMem (len, MEMF_ANY);
+
+    if (!buffer)
+      O (fatal, NILF, "MyExecute: Cannot allocate space for calling a command\n");
+
+    ptr = buffer;
+
+    for (aptr=argv; *aptr; aptr++)
+    {
+        if (((*aptr)[0] == ';' && !(*aptr)[1]))
+        {
+            *ptr ++ = '"';
+            strcpy (ptr, *aptr);
+            ptr += strlen (ptr);
+            *ptr ++ = '"';
+        }
+        else if ((*aptr)[0] == '@' && (*aptr)[1] == '@' && !(*aptr)[2])
+        {
+            *ptr ++ = '\n';
+            continue;
+        }
+        else
+        {
+            strcpy (ptr, *aptr);
+            ptr += strlen (ptr);
+        }
+        *ptr ++ = ' ';
+        *ptr = 0;
+    }
+
+    ptr[-1] = '\n';
+
+    status = SystemTags (buffer,
+        SYS_UserShell, TRUE,
+        TAG_END);
+
+    FreeMem (buffer, len);
+
+    if (SetSignal (0L,0L) & SIGBREAKF_CTRL_C)
+        status = 20;
+
+    /* Warnings don't count */
+    if (status == 5)
+        status = 0;
+
+    return status;
+}
+
+char *
+wildcard_expansion (char *wc, char *o)
+{
+#   define PATH_SIZE    1024
+    struct AnchorPath * apath;
+
+    if ( (apath = AllocMem (sizeof (struct AnchorPath) + PATH_SIZE,
+            MEMF_CLEAR))
+        )
+    {
+        apath->ap_Strlen = PATH_SIZE;
+
+        if (MatchFirst (wc, apath) == 0)
+        {
+            do
+            {
+                o = variable_buffer_output (o, apath->ap_Buf,
+                        strlen (apath->ap_Buf));
+                o = variable_buffer_output (o, " ",1);
+            } while (MatchNext (apath) == 0);
+        }
+
+        MatchEnd (apath);
+        FreeMem (apath, sizeof (struct AnchorPath) + PATH_SIZE);
+    }
+
+    return o;
+}
diff --git a/src/kmk/amiga.h b/src/kmk/amiga.h
new file mode 100644
index 0000000..afc910a
--- /dev/null
+++ b/src/kmk/amiga.h
@@ -0,0 +1,18 @@
+/* Definitions for amiga specific things
+Copyright (C) 1995-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+int MyExecute (char ** argv);
+char * wildcard_expansion (char * wc, char * o);
diff --git a/src/kmk/ar.c b/src/kmk/ar.c
new file mode 100644
index 0000000..b9c1cf7
--- /dev/null
+++ b/src/kmk/ar.c
@@ -0,0 +1,328 @@
+/* Interface to 'ar' archives for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#ifndef NO_ARCHIVES
+
+#include "filedef.h"
+#include "dep.h"
+#include <fnmatch.h>
+
+/* Return nonzero if NAME is an archive-member reference, zero if not.  An
+   archive-member reference is a name like 'lib(member)' where member is a
+   non-empty string.
+   If a name like 'lib((entry))' is used, a fatal error is signaled at
+   the attempt to use this unsupported feature.  */
+
+int
+ar_name (const char *name)
+{
+  const char *p = strchr (name, '(');
+  const char *end;
+
+  if (p == 0 || p == name)
+    return 0;
+
+  end = p + strlen (p) - 1;
+  if (*end != ')' || end == p + 1)
+    return 0;
+
+  if (p[1] == '(' && end[-1] == ')')
+    OS (fatal, NILF, _("attempt to use unsupported feature: '%s'"), name);
+
+  return 1;
+}
+
+
+/* Parse the archive-member reference NAME into the archive and member names.
+   Creates one allocated string containing both names, pointed to by ARNAME_P.
+   MEMNAME_P points to the member.  */
+
+void
+ar_parse_name (const char *name, char **arname_p, char **memname_p)
+{
+  char *p;
+
+  *arname_p = xstrdup (name);
+  p = strchr (*arname_p, '(');
+  *(p++) = '\0';
+  p[strlen (p) - 1] = '\0';
+  *memname_p = p;
+}
+
+
+/* This function is called by 'ar_scan' to find which member to look at.  */
+
+/* ARGSUSED */
+static long int
+ar_member_date_1 (int desc UNUSED, const char *mem, int truncated,
+                  long int hdrpos UNUSED, long int datapos UNUSED,
+                  long int size UNUSED, long int date,
+                  int uid UNUSED, int gid UNUSED, unsigned int mode UNUSED,
+                  const void *name)
+{
+  return ar_name_equal (name, mem, truncated) ? date : 0;
+}
+
+/* Return the modtime of NAME.  */
+
+time_t
+ar_member_date (const char *name)
+{
+  char *arname;
+  char *memname;
+  long int val;
+
+  ar_parse_name (name, &arname, &memname);
+
+  /* Make sure we know the modtime of the archive itself because we are
+     likely to be called just before commands to remake a member are run,
+     and they will change the archive itself.
+
+     But we must be careful not to enter_file the archive itself if it does
+     not exist, because pattern_search assumes that files found in the data
+     base exist or can be made.  */
+  {
+    struct file *arfile;
+    arfile = lookup_file (arname);
+    if (arfile == 0 && file_exists_p (arname))
+      arfile = enter_file (strcache_add (arname));
+
+    if (arfile != 0)
+      (void) f_mtime (arfile, 0);
+  }
+
+  val = ar_scan (arname, ar_member_date_1, memname);
+
+  free (arname);
+
+  return (val <= 0 ? (time_t) -1 : (time_t) val);
+}
+
+/* Set the archive-member NAME's modtime to now.  */
+
+#ifdef VMS
+int
+ar_touch (const char *name)
+{
+  O (error, NILF, _("touch archive member is not available on VMS"));
+  return -1;
+}
+#else
+int
+ar_touch (const char *name)
+{
+  char *arname, *memname;
+  int val;
+
+  ar_parse_name (name, &arname, &memname);
+
+  /* Make sure we know the modtime of the archive itself before we
+     touch the member, since this will change the archive modtime.  */
+  {
+    struct file *arfile;
+    arfile = enter_file (strcache_add (arname));
+    f_mtime (arfile, 0);
+  }
+
+  val = 1;
+  switch (ar_member_touch (arname, memname))
+    {
+    case -1:
+      OS (error, NILF, _("touch: Archive '%s' does not exist"), arname);
+      break;
+    case -2:
+      OS (error, NILF, _("touch: '%s' is not a valid archive"), arname);
+      break;
+    case -3:
+      perror_with_name ("touch: ", arname);
+      break;
+    case 1:
+      OSS (error, NILF,
+           _("touch: Member '%s' does not exist in '%s'"), memname, arname);
+      break;
+    case 0:
+      val = 0;
+      break;
+    default:
+      OS (error, NILF,
+          _("touch: Bad return code from ar_member_touch on '%s'"), name);
+    }
+
+  free (arname);
+
+  return val;
+}
+#endif /* !VMS */
+
+/* State of an 'ar_glob' run, passed to 'ar_glob_match'.  */
+
+/* On VMS, (object) modules in libraries do not have suffixes. That is, to
+   find a match for a pattern, the pattern must not have any suffix. So the
+   suffix of the pattern is saved and the pattern is stripped (ar_glob).
+   If there is a match and the match, which is a module name, is added to
+   the chain, the saved suffix is added back to construct a source filename
+   (ar_glob_match). */
+
+struct ar_glob_state
+  {
+    const char *arname;
+    const char *pattern;
+#ifdef VMS
+    char *suffix;
+#endif
+    unsigned int size;
+    struct nameseq *chain;
+    unsigned int n;
+  };
+
+/* This function is called by 'ar_scan' to match one archive
+   element against the pattern in STATE.  */
+
+static long int
+ar_glob_match (int desc UNUSED, const char *mem, int truncated UNUSED,
+               long int hdrpos UNUSED, long int datapos UNUSED,
+               long int size UNUSED, long int date UNUSED, int uid UNUSED,
+               int gid UNUSED, unsigned int mode UNUSED, const void *arg)
+{
+  struct ar_glob_state *state = (struct ar_glob_state *)arg;
+
+  if (fnmatch (state->pattern, mem, FNM_PATHNAME|FNM_PERIOD) == 0)
+    {
+      /* We have a match.  Add it to the chain.  */
+      struct nameseq *new = xcalloc (state->size);
+#ifdef VMS
+      if (state->suffix)
+        new->name = strcache_add(
+            concat(5, state->arname, "(", mem, state->suffix, ")"));
+      else
+#endif
+        new->name = strcache_add(concat(4, state->arname, "(", mem, ")"));
+      new->next = state->chain;
+      state->chain = new;
+      ++state->n;
+    }
+
+  return 0L;
+}
+
+/* Return nonzero if PATTERN contains any metacharacters.
+   Metacharacters can be quoted with backslashes if QUOTE is nonzero.  */
+static int
+ar_glob_pattern_p (const char *pattern, int quote)
+{
+  const char *p;
+  int opened = 0;
+
+  for (p = pattern; *p != '\0'; ++p)
+    switch (*p)
+      {
+      case '?':
+      case '*':
+        return 1;
+
+      case '\\':
+        if (quote)
+          ++p;
+        break;
+
+      case '[':
+        opened = 1;
+        break;
+
+      case ']':
+        if (opened)
+          return 1;
+        break;
+      }
+
+  return 0;
+}
+
+/* Glob for MEMBER_PATTERN in archive ARNAME.
+   Return a malloc'd chain of matching elements (or nil if none).  */
+
+struct nameseq *
+ar_glob (const char *arname, const char *member_pattern, unsigned int size)
+{
+  struct ar_glob_state state;
+  struct nameseq *n;
+  const char **names;
+  unsigned int i;
+#ifdef VMS
+  char *vms_member_pattern;
+#endif
+  if (! ar_glob_pattern_p (member_pattern, 1))
+    return 0;
+
+  /* Scan the archive for matches.
+     ar_glob_match will accumulate them in STATE.chain.  */
+  state.arname = arname;
+  state.pattern = member_pattern;
+#ifdef VMS
+    {
+      /* In a copy of the pattern, find the suffix, save it and  remove it from
+         the pattern */
+      char *lastdot;
+      vms_member_pattern = xstrdup(member_pattern);
+      lastdot = strrchr(vms_member_pattern, '.');
+      state.suffix = lastdot;
+      if (lastdot)
+        {
+          state.suffix = xstrdup(lastdot);
+          *lastdot = 0;
+        }
+      state.pattern = vms_member_pattern;
+    }
+#endif
+  state.size = size;
+  state.chain = 0;
+  state.n = 0;
+  ar_scan (arname, ar_glob_match, &state);
+
+#ifdef VMS
+  /* Deallocate any duplicated string */
+  free(vms_member_pattern);
+  if (state.suffix)
+    {
+      free(state.suffix);
+    }
+#endif
+
+  if (state.chain == 0)
+    return 0;
+
+  /* Now put the names into a vector for sorting.  */
+  names = alloca (state.n * sizeof (const char *));
+  i = 0;
+  for (n = state.chain; n != 0; n = n->next)
+    names[i++] = n->name;
+
+  /* Sort them alphabetically.  */
+  /* MSVC erroneously warns without a cast here.  */
+  qsort ((void *)names, i, sizeof (*names), alpha_compare);
+
+  /* Put them back into the chain in the sorted order.  */
+  i = 0;
+  for (n = state.chain; n != 0; n = n->next)
+    n->name = names[i++];
+
+  return state.chain;
+}
+
+#endif  /* Not NO_ARCHIVES.  */
diff --git a/src/kmk/arscan.c b/src/kmk/arscan.c
new file mode 100644
index 0000000..2baa8c8
--- /dev/null
+++ b/src/kmk/arscan.c
@@ -0,0 +1,982 @@
+/* Library function for scanning an archive file.
+Copyright (C) 1987-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#ifdef TEST
+/* Hack, the real error() routine eventually pulls in die from main.c */
+#define error(a, b, c, d)
+#endif
+
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#else
+#include <sys/file.h>
+#endif
+
+#ifndef NO_ARCHIVES
+
+#ifdef VMS
+#include <lbrdef.h>
+#include <mhddef.h>
+#include <credef.h>
+#include <descrip.h>
+#include <ctype.h>
+#include <ssdef.h>
+#include <stsdef.h>
+#include <rmsdef.h>
+
+/* This symbol should be present in lbrdef.h. */
+#ifndef LBR$_HDRTRUNC
+#pragma extern_model save
+#pragma extern_model globalvalue
+extern unsigned int LBR$_HDRTRUNC;
+#pragma extern_model restore
+#endif
+
+#include <unixlib.h>
+#include <lbr$routines.h>
+
+const char *
+vmsify (const char *name, int type);
+
+/* Time conversion from VMS to Unix
+   Conversion from local time (stored in library) to GMT (needed for gmake)
+   Note: The tm_gmtoff element is a VMS extension to the ANSI standard. */
+static time_t
+vms_time_to_unix(void *vms_time)
+{
+  struct tm *tmp;
+  time_t unix_time;
+
+  unix_time = decc$fix_time(vms_time);
+  tmp = localtime(&unix_time);
+  unix_time -= tmp->tm_gmtoff;
+
+  return unix_time;
+}
+
+
+/* VMS library routines need static variables for callback */
+static void *VMS_lib_idx;
+
+static const void *VMS_saved_arg;
+
+static long int (*VMS_function) ();
+
+static long int VMS_function_ret;
+
+
+/* This is a callback procedure for lib$get_index */
+static int
+VMS_get_member_info(struct dsc$descriptor_s *module, unsigned long *rfa)
+{
+  int status, i;
+  const int truncated = 0; /* Member name may be truncated */
+  time_t member_date; /* Member date */
+  char *filename;
+  unsigned int buffer_length; /* Actual buffer length */
+
+  /* Unused constants - Make does not actually use most of these */
+  const int file_desc = -1; /* archive file descriptor for reading the data */
+  const int header_position = 0; /* Header position */
+  const int data_position = 0; /* Data position in file */
+  const int data_size = 0; /* Data size */
+  const int uid = 0; /* member gid */
+  const int gid = 0; /* member gid */
+  const int mode = 0; /* member protection mode */
+  /* End of unused constants */
+
+  static struct dsc$descriptor_s bufdesc =
+    { 0, DSC$K_DTYPE_T, DSC$K_CLASS_S, NULL };
+
+  /* Only need the module definition */
+  struct mhddef *mhd;
+
+  /* If a previous callback is non-zero, just return that status */
+  if (VMS_function_ret)
+    {
+      return SS$_NORMAL;
+    }
+
+  /* lbr_set_module returns more than just the module header. So allocate
+     a buffer which is big enough: the maximum LBR$C_MAXHDRSIZ. That's at
+     least bigger than the size of struct mhddef.
+     If the request is too small, a buffer truncated warning is issued so
+     it can be reissued with a larger buffer.
+     We do not care if the buffer is truncated, so that is still a success. */
+  mhd = xmalloc(LBR$C_MAXHDRSIZ);
+  bufdesc.dsc$a_pointer = (char *) mhd;
+  bufdesc.dsc$w_length = LBR$C_MAXHDRSIZ;
+
+  status = lbr$set_module(&VMS_lib_idx, rfa, &bufdesc, &buffer_length, 0);
+
+  if ((status != LBR$_HDRTRUNC) && !$VMS_STATUS_SUCCESS(status))
+    {
+      ON(error, NILF,
+          _("lbr$set_module() failed to extract module info, status = %d"),
+          status);
+
+      lbr$close(&VMS_lib_idx);
+
+      return status;
+    }
+
+#ifdef TEST
+  /* When testing this code, it is useful to know the length returned */
+  printf("Input length = %d, actual = %d\n",
+      bufdesc.dsc$w_length, buffer_length);
+#endif
+
+  /* Conversion from VMS time to C time.
+     VMS defectlet - mhddef is sub-optimal, for the time, it has a 32 bit
+     longword, mhd$l_datim, and a 32 bit fill instead of two longwords, or
+     equivalent. */
+  member_date = vms_time_to_unix(&mhd->mhd$l_datim);
+  free(mhd);
+
+  /* Here we have a problem.  The module name on VMS does not have
+     a file type, but the filename pattern in the "VMS_saved_arg"
+     may have one.
+     But only the method being called knows how to interpret the
+     filename pattern.
+     There are currently two different formats being used.
+     This means that we need a VMS specific code in those methods
+     to handle it. */
+  filename = xmalloc(module->dsc$w_length + 1);
+
+  /* TODO: We may need an option to preserve the case of the module
+     For now force the module name to lower case */
+  for (i = 0; i < module->dsc$w_length; i++)
+    filename[i] = _tolower((unsigned char )module->dsc$a_pointer[i]);
+
+  filename[i] = '\0';
+
+  VMS_function_ret = (*VMS_function)(file_desc, filename, truncated,
+      header_position, data_position, data_size, member_date, uid, gid, mode,
+      VMS_saved_arg);
+
+  free(filename);
+  return SS$_NORMAL;
+}
+
+
+/* Takes three arguments ARCHIVE, FUNCTION and ARG.
+
+   Open the archive named ARCHIVE, find its members one by one,
+   and for each one call FUNCTION with the following arguments:
+     archive file descriptor for reading the data,
+     member name,
+     member name might be truncated flag,
+     member header position in file,
+     member data position in file,
+     member data size,
+     member date,
+     member uid,
+     member gid,
+     member protection mode,
+     ARG.
+
+   NOTE: on VMS systems, only name, date, and arg are meaningful!
+
+   The descriptor is poised to read the data of the member
+   when FUNCTION is called.  It does not matter how much
+   data FUNCTION reads.
+
+   If FUNCTION returns nonzero, we immediately return
+   what FUNCTION returned.
+
+   Returns -1 if archive does not exist,
+   Returns -2 if archive has invalid format.
+   Returns 0 if have scanned successfully.  */
+
+long int
+ar_scan (const char *archive, ar_member_func_t function, const void *varg)
+{
+  char *vms_archive;
+
+  static struct dsc$descriptor_s libdesc =
+    { 0, DSC$K_DTYPE_T, DSC$K_CLASS_S, NULL };
+
+  const unsigned long func = LBR$C_READ;
+  const unsigned long type = LBR$C_TYP_UNK;
+  const unsigned long index = 1;
+  unsigned long lib_idx;
+  int status;
+
+  VMS_saved_arg = varg;
+
+  /* Null archive string can show up in test and cause an access violation */
+  if (archive == NULL)
+    {
+      /* Null filenames do not exist */
+      return -1;
+    }
+
+  /* archive path name must be in VMS format */
+  vms_archive = (char *) vmsify(archive, 0);
+
+  status = lbr$ini_control(&VMS_lib_idx, &func, &type, 0);
+
+  if (!$VMS_STATUS_SUCCESS(status))
+    {
+      ON(error, NILF, _("lbr$ini_control() failed with status = %d"), status);
+      return -2;
+    }
+
+  libdesc.dsc$a_pointer = vms_archive;
+  libdesc.dsc$w_length = strlen(vms_archive);
+
+  status = lbr$open(&VMS_lib_idx, &libdesc, 0, NULL, 0, NULL, 0);
+
+  if (!$VMS_STATUS_SUCCESS(status))
+    {
+
+      /* TODO: A library format failure could mean that this is a file
+         generated by the GNU AR utility and in that case, we need to
+         take the UNIX codepath.  This will also take a change to the
+         GNV AR wrapper program. */
+
+      switch (status)
+        {
+      case RMS$_FNF:
+        /* Archive does not exist */
+        return -1;
+      default:
+#ifndef TEST
+        OSN(error, NILF,
+            _("unable to open library '%s' to lookup member status %d"),
+            archive, status);
+#endif
+        /* For library format errors, specification says to return -2 */
+        return -2;
+        }
+    }
+
+  VMS_function = function;
+
+  /* Clear the return status, as we are supposed to stop calling the
+     callback function if it becomes non-zero, and this is a static
+     variable. */
+  VMS_function_ret = 0;
+
+  status = lbr$get_index(&VMS_lib_idx, &index, VMS_get_member_info, NULL, 0);
+
+  lbr$close(&VMS_lib_idx);
+
+  /* Unless a failure occurred in the lbr$ routines, return the
+     the status from the 'function' routine. */
+  if ($VMS_STATUS_SUCCESS(status))
+    {
+      return VMS_function_ret;
+    }
+
+  /* This must be something wrong with the library and an error
+     message should already have been printed. */
+  return -2;
+}
+
+#else /* !VMS */
+
+/* SCO Unix's compiler defines both of these.  */
+#ifdef  M_UNIX
+#undef  M_XENIX
+#endif
+
+/* On the sun386i and in System V rel 3, ar.h defines two different archive
+   formats depending upon whether you have defined PORTAR (normal) or PORT5AR
+   (System V Release 1).  There is no default, one or the other must be defined
+   to have a nonzero value.  */
+
+#if (!defined (PORTAR) || PORTAR == 0) && (!defined (PORT5AR) || PORT5AR == 0)
+#undef  PORTAR
+#ifdef M_XENIX
+/* According to Jim Sievert <jas1@rsvl.unisys.com>, for SCO XENIX defining
+   PORTAR to 1 gets the wrong archive format, and defining it to 0 gets the
+   right one.  */
+#define PORTAR 0
+#else
+#define PORTAR 1
+#endif
+#endif
+
+/* On AIX, define these symbols to be sure to get both archive formats.
+   AIX 4.3 introduced the "big" archive format to support 64-bit object
+   files, so on AIX 4.3 systems we need to support both the "normal" and
+   "big" archive formats.  An archive's format is indicated in the
+   "fl_magic" field of the "FL_HDR" structure.  For a normal archive,
+   this field will be the string defined by the AIAMAG symbol.  For a
+   "big" archive, it will be the string defined by the AIAMAGBIG symbol
+   (at least on AIX it works this way).
+
+   Note: we'll define these symbols regardless of which AIX version
+   we're compiling on, but this is okay since we'll use the new symbols
+   only if they're present.  */
+#ifdef _AIX
+# define __AR_SMALL__
+# define __AR_BIG__
+#endif
+
+#ifndef WINDOWS32
+# if !defined (__ANDROID__) && !defined (__BEOS__) && !defined (__HAIKU__) /* bird: exclude haiku */
+#  include <ar.h>
+# else
+   /* These platforms don't have <ar.h> but have archives in the same format
+    * as many other Unices.  This was taken from GNU binutils for BeOS.
+    */
+#  define ARMAG "!<arch>\n"     /* String that begins an archive file.  */
+#  define SARMAG 8              /* Size of that string.  */
+#  define ARFMAG "`\n"          /* String in ar_fmag at end of each header.  */
+struct ar_hdr
+  {
+    char ar_name[16];           /* Member file name, sometimes / terminated. */
+    char ar_date[12];           /* File date, decimal seconds since Epoch.  */
+    char ar_uid[6], ar_gid[6];  /* User and group IDs, in ASCII decimal.  */
+    char ar_mode[8];            /* File mode, in ASCII octal.  */
+    char ar_size[10];           /* File size, in ASCII decimal.  */
+    char ar_fmag[2];            /* Always contains ARFMAG.  */
+  };
+# endif
+# define TOCHAR(_m)     (_m)
+#else
+/* These should allow us to read Windows (VC++) libraries (according to Frank
+ * Libbrecht <frankl@abzx.belgium.hp.com>)
+ */
+# include <windows.h>
+# include <windef.h>
+# include <io.h>
+# define ARMAG      IMAGE_ARCHIVE_START
+# define SARMAG     IMAGE_ARCHIVE_START_SIZE
+# define ar_hdr     _IMAGE_ARCHIVE_MEMBER_HEADER
+# define ar_name    Name
+# define ar_mode    Mode
+# define ar_size    Size
+# define ar_date    Date
+# define ar_uid     UserID
+# define ar_gid     GroupID
+/* In Windows the member names have type BYTE so we must cast them.  */
+# define TOCHAR(_m)     ((char *)(_m))
+#endif
+
+/* Cray's <ar.h> apparently defines this.  */
+#ifndef AR_HDR_SIZE
+# define   AR_HDR_SIZE  (sizeof (struct ar_hdr))
+#endif
+
+/* Takes three arguments ARCHIVE, FUNCTION and ARG.
+
+   Open the archive named ARCHIVE, find its members one by one,
+   and for each one call FUNCTION with the following arguments:
+     archive file descriptor for reading the data,
+     member name,
+     member name might be truncated flag,
+     member header position in file,
+     member data position in file,
+     member data size,
+     member date,
+     member uid,
+     member gid,
+     member protection mode,
+     ARG.
+
+   The descriptor is poised to read the data of the member
+   when FUNCTION is called.  It does not matter how much
+   data FUNCTION reads.
+
+   If FUNCTION returns nonzero, we immediately return
+   what FUNCTION returned.
+
+   Returns -1 if archive does not exist,
+   Returns -2 if archive has invalid format.
+   Returns 0 if have scanned successfully.  */
+
+long int
+ar_scan (const char *archive, ar_member_func_t function, const void *arg)
+{
+#ifdef AIAMAG
+  FL_HDR fl_header;
+# ifdef AIAMAGBIG
+  int big_archive = 0;
+  FL_HDR_BIG fl_header_big;
+# endif
+#endif
+  char *namemap = 0;
+  int desc = open (archive, O_RDONLY, 0);
+  if (desc < 0)
+    return -1;
+#ifdef SARMAG
+  {
+    char buf[SARMAG];
+    int nread;
+    EINTRLOOP (nread, read (desc, buf, SARMAG));
+    if (nread != SARMAG || memcmp (buf, ARMAG, SARMAG))
+      {
+        (void) close (desc);
+        return -2;
+      }
+  }
+#else
+#ifdef AIAMAG
+  {
+    int nread;
+    EINTRLOOP (nread, read (desc, &fl_header, FL_HSZ));
+    if (nread != FL_HSZ)
+      {
+        (void) close (desc);
+        return -2;
+      }
+#ifdef AIAMAGBIG
+    /* If this is a "big" archive, then set the flag and
+       re-read the header into the "big" structure. */
+    if (!memcmp (fl_header.fl_magic, AIAMAGBIG, SAIAMAG))
+      {
+        off_t o;
+
+        big_archive = 1;
+
+        /* seek back to beginning of archive */
+        EINTRLOOP (o, lseek (desc, 0, 0));
+        if (o < 0)
+          {
+            (void) close (desc);
+            return -2;
+          }
+
+        /* re-read the header into the "big" structure */
+        EINTRLOOP (nread, read (desc, &fl_header_big, FL_HSZ_BIG));
+        if (nread != FL_HSZ_BIG)
+          {
+            (void) close (desc);
+            return -2;
+          }
+      }
+    else
+#endif
+       /* Check to make sure this is a "normal" archive. */
+      if (memcmp (fl_header.fl_magic, AIAMAG, SAIAMAG))
+        {
+          (void) close (desc);
+          return -2;
+        }
+  }
+#else
+  {
+#ifndef M_XENIX
+    int buf;
+#else
+    unsigned short int buf;
+#endif
+    int nread;
+    EINTRLOOP (nread, read (desc, &buf, sizeof (buf)));
+    if (nread != sizeof (buf) || buf != ARMAG)
+      {
+        (void) close (desc);
+        return -2;
+      }
+  }
+#endif
+#endif
+
+  /* Now find the members one by one.  */
+  {
+#ifdef SARMAG
+    register long int member_offset = SARMAG;
+#else
+#ifdef AIAMAG
+    long int member_offset;
+    long int last_member_offset;
+
+#ifdef AIAMAGBIG
+    if ( big_archive )
+      {
+        sscanf (fl_header_big.fl_fstmoff, "%20ld", &member_offset);
+        sscanf (fl_header_big.fl_lstmoff, "%20ld", &last_member_offset);
+      }
+    else
+#endif
+      {
+        sscanf (fl_header.fl_fstmoff, "%12ld", &member_offset);
+        sscanf (fl_header.fl_lstmoff, "%12ld", &last_member_offset);
+      }
+
+    if (member_offset == 0)
+      {
+        /* Empty archive.  */
+        close (desc);
+        return 0;
+      }
+#else
+#ifndef M_XENIX
+    register long int member_offset = sizeof (int);
+#else   /* Xenix.  */
+    register long int member_offset = sizeof (unsigned short int);
+#endif  /* Not Xenix.  */
+#endif
+#endif
+
+    while (1)
+      {
+        register int nread;
+        struct ar_hdr member_header;
+#ifdef AIAMAGBIG
+        struct ar_hdr_big member_header_big;
+#endif
+#ifdef AIAMAG
+        char name[256];
+        int name_len;
+        long int dateval;
+        int uidval, gidval;
+        long int data_offset;
+#else
+        char namebuf[sizeof member_header.ar_name + 1];
+        char *name;
+        int is_namemap;         /* Nonzero if this entry maps long names.  */
+        int long_name = 0;
+#endif
+        long int eltsize;
+        unsigned int eltmode;
+        long int fnval;
+        off_t o;
+
+        EINTRLOOP (o, lseek (desc, member_offset, 0));
+        if (o < 0)
+          {
+            (void) close (desc);
+            return -2;
+          }
+
+#ifdef AIAMAG
+#define       AR_MEMHDR_SZ(x) (sizeof(x) - sizeof (x._ar_name))
+
+#ifdef AIAMAGBIG
+        if (big_archive)
+          {
+            EINTRLOOP (nread, read (desc, &member_header_big,
+                                    AR_MEMHDR_SZ(member_header_big)));
+
+            if (nread != AR_MEMHDR_SZ(member_header_big))
+              {
+                (void) close (desc);
+                return -2;
+              }
+
+            sscanf (member_header_big.ar_namlen, "%4d", &name_len);
+            EINTRLOOP (nread, read (desc, name, name_len));
+
+            if (nread != name_len)
+              {
+                (void) close (desc);
+                return -2;
+              }
+
+            name[name_len] = 0;
+
+            sscanf (member_header_big.ar_date, "%12ld", &dateval);
+            sscanf (member_header_big.ar_uid, "%12d", &uidval);
+            sscanf (member_header_big.ar_gid, "%12d", &gidval);
+            sscanf (member_header_big.ar_mode, "%12o", &eltmode);
+            sscanf (member_header_big.ar_size, "%20ld", &eltsize);
+
+            data_offset = (member_offset + AR_MEMHDR_SZ(member_header_big)
+                           + name_len + 2);
+          }
+        else
+#endif
+          {
+            EINTRLOOP (nread, read (desc, &member_header,
+                                    AR_MEMHDR_SZ(member_header)));
+
+            if (nread != AR_MEMHDR_SZ(member_header))
+              {
+                (void) close (desc);
+                return -2;
+              }
+
+            sscanf (member_header.ar_namlen, "%4d", &name_len);
+            EINTRLOOP (nread, read (desc, name, name_len));
+
+            if (nread != name_len)
+              {
+                (void) close (desc);
+                return -2;
+              }
+
+            name[name_len] = 0;
+
+            sscanf (member_header.ar_date, "%12ld", &dateval);
+            sscanf (member_header.ar_uid, "%12d", &uidval);
+            sscanf (member_header.ar_gid, "%12d", &gidval);
+            sscanf (member_header.ar_mode, "%12o", &eltmode);
+            sscanf (member_header.ar_size, "%12ld", &eltsize);
+
+            data_offset = (member_offset + AR_MEMHDR_SZ(member_header)
+                           + name_len + 2);
+          }
+        data_offset += data_offset % 2;
+
+        fnval =
+          (*function) (desc, name, 0,
+                       member_offset, data_offset, eltsize,
+                       dateval, uidval, gidval,
+                       eltmode, arg);
+
+#else   /* Not AIAMAG.  */
+        EINTRLOOP (nread, read (desc, &member_header, AR_HDR_SIZE));
+        if (nread == 0)
+          /* No data left means end of file; that is OK.  */
+          break;
+
+        if (nread != AR_HDR_SIZE
+#if defined(ARFMAG) || defined(ARFZMAG)
+            || (
+# ifdef ARFMAG
+                memcmp (member_header.ar_fmag, ARFMAG, 2)
+# else
+                1
+# endif
+                &&
+# ifdef ARFZMAG
+                memcmp (member_header.ar_fmag, ARFZMAG, 2)
+# else
+                1
+# endif
+               )
+#endif
+            )
+          {
+            (void) close (desc);
+            return -2;
+          }
+
+        name = namebuf;
+        memcpy (name, member_header.ar_name, sizeof member_header.ar_name);
+        {
+          register char *p = name + sizeof member_header.ar_name;
+          do
+            *p = '\0';
+          while (p > name && *--p == ' ');
+
+#ifndef AIAMAG
+          /* If the member name is "//" or "ARFILENAMES/" this may be
+             a list of file name mappings.  The maximum file name
+             length supported by the standard archive format is 14
+             characters.  This member will actually always be the
+             first or second entry in the archive, but we don't check
+             that.  */
+          is_namemap = (!strcmp (name, "//")
+                        || !strcmp (name, "ARFILENAMES/"));
+#endif  /* Not AIAMAG. */
+          /* On some systems, there is a slash after each member name.  */
+          if (*p == '/')
+            *p = '\0';
+
+#ifndef AIAMAG
+          /* If the member name starts with a space or a slash, this
+             is an index into the file name mappings (used by GNU ar).
+             Otherwise if the member name looks like #1/NUMBER the
+             real member name appears in the element data (used by
+             4.4BSD).  */
+          if (! is_namemap
+              && (name[0] == ' ' || name[0] == '/')
+              && namemap != 0)
+            {
+              name = namemap + atoi (name + 1);
+              long_name = 1;
+            }
+          else if (name[0] == '#'
+                   && name[1] == '1'
+                   && name[2] == '/')
+            {
+              int namesize = atoi (name + 3);
+
+              name = alloca (namesize + 1);
+              EINTRLOOP (nread, read (desc, name, namesize));
+              if (nread != namesize)
+                {
+                  close (desc);
+                  return -2;
+                }
+              name[namesize] = '\0';
+
+              long_name = 1;
+            }
+#endif /* Not AIAMAG. */
+        }
+
+#ifndef M_XENIX
+        sscanf (TOCHAR (member_header.ar_mode), "%o", &eltmode);
+        eltsize = atol (TOCHAR (member_header.ar_size));
+#else   /* Xenix.  */
+        eltmode = (unsigned short int) member_header.ar_mode;
+        eltsize = member_header.ar_size;
+#endif  /* Not Xenix.  */
+
+        fnval =
+          (*function) (desc, name, ! long_name, member_offset,
+                       member_offset + AR_HDR_SIZE, eltsize,
+#ifndef M_XENIX
+                       atol (TOCHAR (member_header.ar_date)),
+                       atoi (TOCHAR (member_header.ar_uid)),
+                       atoi (TOCHAR (member_header.ar_gid)),
+#else   /* Xenix.  */
+                       member_header.ar_date,
+                       member_header.ar_uid,
+                       member_header.ar_gid,
+#endif  /* Not Xenix.  */
+                       eltmode, arg);
+
+#endif  /* AIAMAG.  */
+
+        if (fnval)
+          {
+            (void) close (desc);
+            return fnval;
+          }
+
+#ifdef AIAMAG
+        if (member_offset == last_member_offset)
+          /* End of the chain.  */
+          break;
+
+#ifdef AIAMAGBIG
+        if (big_archive)
+         sscanf (member_header_big.ar_nxtmem, "%20ld", &member_offset);
+        else
+#endif
+          sscanf (member_header.ar_nxtmem, "%12ld", &member_offset);
+
+        if (lseek (desc, member_offset, 0) != member_offset)
+          {
+            (void) close (desc);
+            return -2;
+          }
+#else
+
+        /* If this member maps archive names, we must read it in.  The
+           name map will always precede any members whose names must
+           be mapped.  */
+        if (is_namemap)
+          {
+            char *clear;
+            char *limit;
+
+            namemap = alloca (eltsize);
+            EINTRLOOP (nread, read (desc, namemap, eltsize));
+            if (nread != eltsize)
+              {
+                (void) close (desc);
+                return -2;
+              }
+
+            /* The names are separated by newlines.  Some formats have
+               a trailing slash.  Null terminate the strings for
+               convenience.  */
+            limit = namemap + eltsize;
+            for (clear = namemap; clear < limit; clear++)
+              {
+                if (*clear == '\n')
+                  {
+                    *clear = '\0';
+                    if (clear[-1] == '/')
+                      clear[-1] = '\0';
+                  }
+              }
+
+            is_namemap = 0;
+          }
+
+        member_offset += AR_HDR_SIZE + eltsize;
+        if (member_offset % 2 != 0)
+          member_offset++;
+#endif
+      }
+  }
+
+  close (desc);
+  return 0;
+}
+#endif /* !VMS */
+
+/* Return nonzero iff NAME matches MEM.
+   If TRUNCATED is nonzero, MEM may be truncated to
+   sizeof (struct ar_hdr.ar_name) - 1.  */
+
+int
+ar_name_equal (const char *name, const char *mem, int truncated)
+{
+  const char *p;
+
+  p = strrchr (name, '/');
+  if (p != 0)
+    name = p + 1;
+
+#ifndef VMS
+  if (truncated)
+    {
+#ifdef AIAMAG
+      /* TRUNCATED should never be set on this system.  */
+      abort ();
+#else
+      struct ar_hdr hdr;
+#if !defined (__hpux) && !defined (cray)
+      return strneq (name, mem, sizeof (hdr.ar_name) - 1);
+#else
+      return strneq (name, mem, sizeof (hdr.ar_name) - 2);
+#endif /* !__hpux && !cray */
+#endif /* !AIAMAG */
+    }
+
+  return !strcmp (name, mem);
+#else
+  /* VMS members do not have suffixes, but the filenames usually
+     have.
+     Do we need to strip VMS disk/directory format paths?
+
+     Most VMS compilers etc. by default are case insensitive
+     but produce uppercase external names, incl. module names.
+     However the VMS librarian (ar) and the linker by default
+     are case sensitive: they take what they get, usually
+     uppercase names. So for the non-default settings of the
+     compilers etc. there is a need to have a case sensitive
+     mode. */
+  {
+    int len;
+    len = strlen(mem);
+    int match;
+    char *dot;
+    if ((dot=strrchr(name,'.')))
+      match = (len == dot - name) && !strncasecmp(name, mem, len);
+    else
+      match = !strcasecmp (name, mem);
+    return match;
+  }
+#endif /* !VMS */
+}
+
+#ifndef VMS
+/* ARGSUSED */
+static long int
+ar_member_pos (int desc UNUSED, const char *mem, int truncated,
+               long int hdrpos, long int datapos UNUSED, long int size UNUSED,
+               long int date UNUSED, int uid UNUSED, int gid UNUSED,
+               unsigned int mode UNUSED, const void *name)
+{
+  if (!ar_name_equal (name, mem, truncated))
+    return 0;
+  return hdrpos;
+}
+
+/* Set date of member MEMNAME in archive ARNAME to current time.
+   Returns 0 if successful,
+   -1 if file ARNAME does not exist,
+   -2 if not a valid archive,
+   -3 if other random system call error (including file read-only),
+   1 if valid but member MEMNAME does not exist.  */
+
+int
+ar_member_touch (const char *arname, const char *memname)
+{
+  long int pos = ar_scan (arname, ar_member_pos, memname);
+  int fd;
+  struct ar_hdr ar_hdr;
+  off_t o;
+  int r;
+  unsigned int ui;
+  struct stat statbuf;
+
+  if (pos < 0)
+    return (int) pos;
+  if (!pos)
+    return 1;
+
+  EINTRLOOP (fd, open (arname, O_RDWR, 0666));
+  if (fd < 0)
+    return -3;
+  /* Read in this member's header */
+  EINTRLOOP (o, lseek (fd, pos, 0));
+  if (o < 0)
+    goto lose;
+  EINTRLOOP (r, read (fd, &ar_hdr, AR_HDR_SIZE));
+  if (r != AR_HDR_SIZE)
+    goto lose;
+  /* Write back the header, thus touching the archive file.  */
+  EINTRLOOP (o, lseek (fd, pos, 0));
+  if (o < 0)
+    goto lose;
+  EINTRLOOP (r, write (fd, &ar_hdr, AR_HDR_SIZE));
+  if (r != AR_HDR_SIZE)
+    goto lose;
+  /* The file's mtime is the time we we want.  */
+  EINTRLOOP (r, fstat (fd, &statbuf));
+  if (r < 0)
+    goto lose;
+#if defined(ARFMAG) || defined(ARFZMAG) || defined(AIAMAG) || defined(WINDOWS32)
+  /* Advance member's time to that time */
+  for (ui = 0; ui < sizeof ar_hdr.ar_date; ui++)
+    ar_hdr.ar_date[ui] = ' ';
+  sprintf (TOCHAR (ar_hdr.ar_date), "%lu", (long unsigned) statbuf.st_mtime);
+#ifdef AIAMAG
+  ar_hdr.ar_date[strlen (ar_hdr.ar_date)] = ' ';
+#endif
+#else
+  ar_hdr.ar_date = statbuf.st_mtime;
+#endif
+  /* Write back this member's header */
+  EINTRLOOP (o, lseek (fd, pos, 0));
+  if (o < 0)
+    goto lose;
+  EINTRLOOP (r, write (fd, &ar_hdr, AR_HDR_SIZE));
+  if (r != AR_HDR_SIZE)
+    goto lose;
+  close (fd);
+  return 0;
+
+ lose:
+  r = errno;
+  close (fd);
+  errno = r;
+  return -3;
+}
+#endif
+
+#ifdef TEST
+
+long int
+describe_member (int desc, const char *name, int truncated,
+                 long int hdrpos, long int datapos, long int size,
+                 long int date, int uid, int gid, unsigned int mode,
+                 const void *arg)
+{
+  extern char *ctime ();
+
+  printf (_("Member '%s'%s: %ld bytes at %ld (%ld).\n"),
+          name, truncated ? _(" (name might be truncated)") : "",
+          size, hdrpos, datapos);
+  printf (_("  Date %s"), ctime (&date));
+  printf (_("  uid = %d, gid = %d, mode = 0%o.\n"), uid, gid, mode);
+
+  return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+  ar_scan (argv[1], describe_member, NULL);
+  return 0;
+}
+
+#endif  /* TEST.  */
+#endif  /* NO_ARCHIVES.  */
diff --git a/src/kmk/build.template b/src/kmk/build.template
new file mode 100644
index 0000000..4b01b46
--- /dev/null
+++ b/src/kmk/build.template
@@ -0,0 +1,81 @@
+#!/bin/sh
+# Shell script to build GNU Make in the absence of any 'make' program.
+# @configure_input@
+
+# Copyright (C) 1993-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# See Makefile.in for comments describing these variables.
+
+srcdir='@srcdir@'
+CC='@CC@'
+CFLAGS='@CFLAGS@ @GUILE_CFLAGS@'
+CPPFLAGS='@CPPFLAGS@'
+LDFLAGS='@AM_LDFLAGS@ @LDFLAGS@'
+ALLOCA='@ALLOCA@'
+LOADLIBES='@LIBS@ @GUILE_LIBS@ @LIBINTL@'
+eval extras=\'@LIBOBJS@\'
+REMOTE='@REMOTE@'
+GLOBLIB='@GLOBLIB@'
+PATH_SEPARATOR='@PATH_SEPARATOR@'
+OBJEXT='@OBJEXT@'
+EXEEXT='@EXEEXT@'
+
+# Common prefix for machine-independent installed files.
+prefix='@prefix@'
+# Common prefix for machine-dependent installed files.
+exec_prefix=`eval echo @exec_prefix@`
+# Directory to find libraries in for '-lXXX'.
+libdir=${exec_prefix}/lib
+# Directory to search by default for included makefiles.
+includedir=${prefix}/include
+
+localedir=${prefix}/share/locale
+aliaspath=${localedir}${PATH_SEPARATOR}.
+
+defines="-DLOCALEDIR=\"${localedir}\" -DLIBDIR=\"${libdir}\" -DINCLUDEDIR=\"${includedir}\""' @DEFS@'
+
+# Exit as soon as any command fails.
+set -e
+
+# These are all the objects we need to link together.
+objs="%objs% remote-${REMOTE}.${OBJEXT} ${extras} ${ALLOCA}"
+
+if [ x"$GLOBLIB" != x ]; then
+  objs="$objs %globobjs%"
+  globinc=-I${srcdir}/glob
+fi
+
+# Compile the source files into those objects.
+for file in `echo ${objs} | sed 's/\.'${OBJEXT}'/.c/g'`; do
+  echo compiling ${file}...
+  $CC $defines $CPPFLAGS $CFLAGS \
+      -c -I. -I${srcdir} ${globinc} ${srcdir}/$file
+done
+
+# The object files were actually all put in the current directory.
+# Remove the source directory names from the list.
+srcobjs="$objs"
+objs=
+for obj in $srcobjs; do
+  objs="$objs `basename $obj`"
+done
+
+# Link all the objects together.
+echo linking make...
+$CC $CFLAGS $LDFLAGS $objs $LOADLIBES -o makenew${EXEEXT}
+echo done
+mv -f makenew${EXEEXT} make${EXEEXT}
diff --git a/src/kmk/build_w32.bat b/src/kmk/build_w32.bat
new file mode 100644
index 0000000..59e068b
--- /dev/null
+++ b/src/kmk/build_w32.bat
@@ -0,0 +1,250 @@
+@echo off

+rem Copyright (C) 1996-2016 Free Software Foundation, Inc.

+rem This file is part of GNU Make.

+rem

+rem GNU Make is free software; you can redistribute it and/or modify it under

+rem the terms of the GNU General Public License as published by the Free

+rem Software Foundation; either version 3 of the License, or (at your option)

+rem any later version.

+rem

+rem GNU Make is distributed in the hope that it will be useful, but WITHOUT

+rem ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

+rem FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.

+rem more details.

+rem

+rem You should have received a copy of the GNU General Public License along

+rem with this program.  If not, see <http://www.gnu.org/licenses/>.

+

+call :Reset

+

+if "%1" == "-h" goto Usage

+if "%1" == "--help" goto Usage

+

+set MAKE=gnumake

+set GUILE=Y

+set COMPILER=msvc

+

+:ParseSW

+if "%1" == "--debug" goto SetDebug

+if "%1" == "--without-guile" goto NoGuile

+if "%1" == "gcc" goto SetCC

+if "%1" == "" goto DoneSW

+

+:SetDebug

+set DEBUG=Y

+shift

+goto ParseSW

+

+:NoGuile

+set GUILE=N

+echo Building without Guile

+shift

+goto ParseSW

+

+:SetCC

+set COMPILER=gcc

+echo Building with GCC

+shift

+goto ParseSW

+

+rem Build with Guile is supported only on NT and later versions

+:DoneSW

+echo.

+echo Creating GNU Make for Windows 9X/NT/2K/XP/Vista/7/8

+if "%DEBUG%" == "Y" echo Building without compiler optimizations

+

+if "%COMPILER%" == "gcc" goto GccBuild

+

+set OUTDIR=.\WinRel

+set "OPTS=/O2 /D NDEBUG"

+set LINKOPTS=

+if "%DEBUG%" == "Y" set OUTDIR=.\WinDebug

+if "%DEBUG%" == "Y" set "OPTS=/Zi /Od /D _DEBUG"

+if "%DEBUG%" == "Y" set LINKOPTS=/DEBUG

+call :Build

+goto Done

+

+:GccBuild

+set OUTDIR=.\GccRel

+set OPTS=-O2

+if "%DEBUG%" == "Y" set OPTS=-O0

+if "%DEBUG%" == "Y" set OUTDIR=.\GccDebug

+call :Build

+goto Done

+

+:Done

+call :Reset

+goto :EOF

+

+:Build

+:: Clean the directory if it exists

+if exist %OUTDIR%\nul rmdir /S /Q %OUTDIR%

+

+:: Recreate it

+mkdir %OUTDIR%

+mkdir %OUTDIR%\glob

+mkdir %OUTDIR%\w32

+mkdir %OUTDIR%\w32\compat

+mkdir %OUTDIR%\w32\subproc

+

+if "%GUILE%" == "Y" call :ChkGuile

+

+echo.

+echo Compiling %OUTDIR% version

+

+if exist config.h.W32.template call :ConfigSCM

+copy config.h.W32 %OUTDIR%\config.h

+

+call :Compile ar

+call :Compile arscan

+call :Compile commands

+call :Compile default

+call :Compile dir

+call :Compile expand

+call :Compile file

+call :Compile function

+call :Compile getloadavg

+call :Compile getopt

+call :Compile getopt1

+call :Compile glob\fnmatch

+call :Compile glob\glob

+call :Compile guile GUILE

+call :Compile hash

+call :Compile implicit

+call :Compile job

+call :Compile load

+call :Compile loadapi

+call :Compile main GUILE

+call :Compile misc

+call :Compile output

+call :Compile read

+call :Compile remake

+call :Compile remote-stub

+call :Compile rule

+call :Compile signame

+call :Compile strcache

+call :Compile variable

+call :Compile version

+call :Compile vpath

+call :Compile w32\compat\posixfcn

+call :Compile w32\pathstuff

+call :Compile w32\subproc\misc

+call :Compile w32\subproc\sub_proc

+call :Compile w32\subproc\w32err

+call :Compile w32\w32os

+

+if not "%COMPILER%" == "gcc" call :Compile w32\compat\dirent

+

+call :Link

+

+echo.

+if not exist %OUTDIR%\%MAKE%.exe echo %OUTDIR% build FAILED!

+if exist %OUTDIR%\%MAKE%.exe echo %OUTDIR% build succeeded.

+goto :EOF

+

+:Compile

+set EXTRAS=

+if "%2" == "GUILE" set "EXTRAS=%GUILECFLAGS%"

+if "%COMPILER%" == "gcc" goto GccCompile

+

+:: MSVC Compile

+echo on

+cl.exe /nologo /MT /W4 /EHsc %OPTS% /I %OUTDIR% /I . /I glob /I w32/include /D WINDOWS32 /D WIN32 /D _CONSOLE /D HAVE_CONFIG_H /FR%OUTDIR% /Fp%OUTDIR%\%MAKE%.pch /Fo%OUTDIR%\%1.obj /Fd%OUTDIR%\%MAKE%.pdb %EXTRAS% /c %1.c

+@echo off

+echo %OUTDIR%\%1.obj >>%OUTDIR%\link.sc

+goto :EOF

+

+:GccCompile

+:: GCC Compile

+echo on

+gcc -mthreads -Wall -std=gnu99 -gdwarf-2 -g3 %OPTS% -I%OUTDIR% -I. -I./glob -I./w32/include -DWINDOWS32 -DHAVE_CONFIG_H %EXTRAS% -o %OUTDIR%\%1.o -c %1.c

+@echo off

+goto :EOF

+

+:Link

+echo Linking %OUTDIR%/%MAKE%.exe

+if "%COMPILER%" == "gcc" goto GccLink

+

+:: MSVC Link

+echo %GUILELIBS% kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib >>%OUTDIR%\link.sc

+echo on

+link.exe /NOLOGO /SUBSYSTEM:console /PDB:%OUTDIR%\%MAKE%.pdb %LINKOPTS% /OUT:%OUTDIR%\%MAKE%.exe @%OUTDIR%\link.sc

+@echo off

+goto :EOF

+

+:GccLink

+:: GCC Link

+echo on

+gcc -mthreads -gdwarf-2 -g3 -o %OUTDIR%\%MAKE%.exe %OUTDIR%\variable.o %OUTDIR%\rule.o %OUTDIR%\remote-stub.o %OUTDIR%\commands.o %OUTDIR%\file.o %OUTDIR%\getloadavg.o %OUTDIR%\default.o %OUTDIR%\signame.o %OUTDIR%\expand.o %OUTDIR%\dir.o %OUTDIR%\main.o %OUTDIR%\getopt1.o %OUTDIR%\guile.o %OUTDIR%\job.o %OUTDIR%\output.o %OUTDIR%\read.o %OUTDIR%\version.o %OUTDIR%\getopt.o %OUTDIR%\arscan.o %OUTDIR%\remake.o %OUTDIR%\misc.o %OUTDIR%\hash.o %OUTDIR%\strcache.o %OUTDIR%\ar.o %OUTDIR%\function.o %OUTDIR%\vpath.o %OUTDIR%\implicit.o %OUTDIR%\loadapi.o %OUTDIR%\load.o %OUTDIR%\glob\glob.o %OUTDIR%\glob\fnmatch.o %OUTDIR%\w32\pathstuff.o %OUTDIR%\w32\compat\posixfcn.o %OUTDIR%\w32\w32os.o %OUTDIR%\w32\subproc\misc.o %OUTDIR%\w32\subproc\sub_proc.o %OUTDIR%\w32\subproc\w32err.o %GUILELIBS% -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -luuid -lodbc32 -lodbccp32 -Wl,--out-implib=%OUTDIR%\libgnumake-1.dll.a

+@echo off

+goto :EOF

+

+:ConfigSCM

+echo Generating config from SCM templates

+sed -n "s/^AC_INIT(\[GNU make\],\[\([^]]\+\)\].*/s,%%VERSION%%,\1,g/p" configure.ac > %OUTDIR%\config.h.W32.sed

+echo s,%%PACKAGE%%,make,g >> %OUTDIR%\config.h.W32.sed

+sed -f %OUTDIR%\config.h.W32.sed config.h.W32.template > config.h.W32

+echo static const char *const GUILE_module_defn = ^" \> gmk-default.h

+sed -e "s/;.*//" -e "/^[ \t]*$/d" -e "s/\"/\\\\\"/g" -e "s/$/ \\\/" gmk-default.scm >> gmk-default.h

+echo ^";>> gmk-default.h

+goto :EOF

+

+:ChkGuile

+if not "%OS%" == "Windows_NT" goto NoGuile

+pkg-config --help > %OUTDIR%\guile.tmp 2> NUL

+if ERRORLEVEL 1 goto NoPkgCfg

+

+echo Checking for Guile 2.0

+if not "%COMPILER%" == "gcc" set PKGMSC=--msvc-syntax

+pkg-config --cflags --short-errors "guile-2.0" > %OUTDIR%\guile.tmp

+if not ERRORLEVEL 1 set /P GUILECFLAGS= < %OUTDIR%\guile.tmp

+

+pkg-config --libs --static --short-errors %PKGMSC% "guile-2.0" > %OUTDIR%\guile.tmp

+if not ERRORLEVEL 1 set /P GUILELIBS= < %OUTDIR%\guile.tmp

+

+if not "%GUILECFLAGS%" == "" goto GuileDone

+

+echo Checking for Guile 1.8

+pkg-config --cflags --short-errors "guile-1.8" > %OUTDIR%\guile.tmp

+if not ERRORLEVEL 1 set /P GUILECFLAGS= < %OUTDIR%\guile.tmp

+

+pkg-config --libs --static --short-errors %PKGMSC% "guile-1.8" > %OUTDIR%\guile.tmp

+if not ERRORLEVEL 1 set /P GUILELIBS= < %OUTDIR%\guile.tmp

+

+if not "%GUILECFLAGS%" == "" goto GuileDone

+

+echo No Guile found, building without Guile

+goto GuileDone

+

+:NoPkgCfg

+echo pkg-config not found, building without Guile

+

+:GuileDone

+if "%GUILECFLAGS%" == "" goto :EOF

+

+echo Guile found, building with Guile

+set "GUILECFLAGS=%GUILECFLAGS% -DHAVE_GUILE"

+goto :EOF

+

+:Usage

+echo Usage: %0 [options] [gcc]

+echo Options:

+echo.  --debug           For GCC only, make a debug build

+echo.                    (MSVC build always makes both debug and release)

+echo.  --without-guile   Do not compile Guile support even if found

+echo.  --help            Display these instructions and exit

+goto :EOF

+

+:Reset

+set COMPILER=

+set DEBUG=

+set GUILE=

+set GUILECFLAGS=

+set GUILELIBS=

+set LINKOPTS=

+set MAKE=

+set NOGUILE=

+set OPTS=

+set OUTDIR=

+set PKGMSC=

+goto :EOF

diff --git a/src/kmk/commands.c b/src/kmk/commands.c
new file mode 100644
index 0000000..619839c
--- /dev/null
+++ b/src/kmk/commands.c
@@ -0,0 +1,954 @@
+/* Command processing for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "dep.h"
+#include "variable.h"
+#include "job.h"
+#include "commands.h"
+#ifdef WINDOWS32
+#include <windows.h>
+#include "w32err.h"
+# ifdef CONFIG_NEW_WIN_CHILDREN
+#  include "w32/winchildren.h"
+# endif
+#endif
+#ifdef CONFIG_WITH_LAZY_DEPS_VARS
+# include <assert.h>
+#endif
+
+#if VMS
+# define FILE_LIST_SEPARATOR (vms_comma_separator ? ',' : ' ')
+#else
+# define FILE_LIST_SEPARATOR ' '
+#endif
+
+#ifndef HAVE_UNISTD_H
+int getpid ();
+#endif
+
+#ifndef CONFIG_WITH_STRCACHE2
+
+static unsigned long
+dep_hash_1 (const void *key)
+{
+  const struct dep *d = key;
+  return_STRING_HASH_1 (dep_name (d));
+}
+
+static unsigned long
+dep_hash_2 (const void *key)
+{
+  const struct dep *d = key;
+  return_STRING_HASH_2 (dep_name (d));
+}
+
+static int
+dep_hash_cmp (const void *x, const void *y)
+{
+  const struct dep *dx = x;
+  const struct dep *dy = y;
+  return strcmp (dep_name (dx), dep_name (dy));
+}
+
+
+#else  /* CONFIG_WITH_STRCACHE2 */
+
+/* Exploit the fact that all names are in the string cache. This means equal
+   names shall have the same storage and there is no need for hashing or
+   comparing. Use the address as the first hash, avoiding any touching of
+   the name, and the length as the second. */
+
+static unsigned long
+dep_hash_1 (const void *key)
+{
+  const char *name = dep_name ((struct dep const *) key);
+  assert (strcache2_is_cached (&file_strcache, name));
+  return (size_t) name / sizeof(void *);
+}
+
+static unsigned long
+dep_hash_2 (const void *key)
+{
+  const char *name = dep_name ((struct dep const *) key);
+  return strcache2_get_len (&file_strcache, name);
+}
+
+static int
+dep_hash_cmp (const void *x, const void *y)
+{
+  struct dep *dx = (struct dep *) x;
+  struct dep *dy = (struct dep *) y;
+  const char *dxname = dep_name (dx);
+  const char *dyname = dep_name (dy);
+  int cmp = dxname == dyname ? 0 : 1;
+
+  /* check preconds: both cached and the cache contains no duplicates. */
+  assert (strcache2_is_cached (&file_strcache, dxname));
+  assert (strcache2_is_cached (&file_strcache, dyname));
+  assert (cmp == 0 || strcmp (dxname, dyname) != 0);
+
+  /* If the names are the same but ignore_mtimes are not equal, one of these
+     is an order-only prerequisite and one isn't.  That means that we should
+     remove the one that isn't and keep the one that is.  */
+
+  if (!cmp && dx->ignore_mtime != dy->ignore_mtime)
+    dx->ignore_mtime = dy->ignore_mtime = 0;
+
+  return cmp;
+}
+
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+#ifdef CONFIG_WITH_LAZY_DEPS_VARS
+/* Create as copy of DEPS without duplicates, similar to what
+   set_file_variables does.  Used by func_deps.  */
+
+struct dep *create_uniqute_deps_chain (struct dep *deps)
+{
+  struct dep *d;
+  struct dep *head = NULL;
+  struct dep **ppnext= &head;
+  struct hash_table dep_hash;
+  void **slot;
+
+  hash_init (&dep_hash, 500, dep_hash_1, dep_hash_2, dep_hash_cmp);
+
+  for (d = deps; d != 0; d = d->next)
+    {
+      if (d->need_2nd_expansion)
+        continue;
+
+      slot = hash_find_slot (&dep_hash, d);
+      if (HASH_VACANT (*slot))
+        {
+          struct dep *n = alloc_dep();
+          *n = *d;
+          n->next = NULL;
+          *ppnext = n;
+          ppnext = &n->next;
+          hash_insert_at (&dep_hash, n, slot);
+        }
+      else
+        {
+          /* Upgrade order only if a normal dep exists.
+             Note! Elected not to upgrade the original, only the sanitized
+                   list, need to check that out later. FIXME TODO */
+          struct dep *d2 = (struct dep *)*slot;
+          if (d->ignore_mtime != d2->ignore_mtime)
+            d->ignore_mtime = d2->ignore_mtime = 0;
+        }
+    }
+
+  return head;
+}
+#endif /* CONFIG_WITH_LAZY_DEPS_VARS */
+
+/* Set FILE's automatic variables up.  */
+
+void
+#if defined(CONFIG_WITH_COMMANDS_FUNC) || defined (CONFIG_WITH_DOT_MUST_MAKE)
+set_file_variables (struct file *file, int called_early)
+#else
+set_file_variables (struct file *file)
+#endif
+{
+  struct dep *d;
+  const char *at, *percent, *star, *less;
+#ifdef CONFIG_WITH_STRCACHE2
+  const char *org_stem = file->stem;
+#endif
+
+#ifndef NO_ARCHIVES
+  /* If the target is an archive member 'lib(member)',
+     then $@ is 'lib' and $% is 'member'.  */
+
+  if (ar_name (file->name))
+    {
+      unsigned int len;
+      const char *cp;
+      char *p;
+
+      cp = strchr (file->name, '(');
+      p = alloca (cp - file->name + 1);
+      memcpy (p, file->name, cp - file->name);
+      p[cp - file->name] = '\0';
+      at = p;
+      len = strlen (cp + 1);
+      p = alloca (len);
+      memcpy (p, cp + 1, len - 1);
+      p[len - 1] = '\0';
+      percent = p;
+    }
+  else
+#endif  /* NO_ARCHIVES.  */
+    {
+      at = file->name;
+      percent = "";
+    }
+
+  /* $* is the stem from an implicit or static pattern rule.  */
+  if (file->stem == 0)
+    {
+      /* In Unix make, $* is set to the target name with
+         any suffix in the .SUFFIXES list stripped off for
+         explicit rules.  We store this in the 'stem' member.  */
+      const char *name;
+      unsigned int len;
+
+#ifndef NO_ARCHIVES
+      if (ar_name (file->name))
+        {
+          name = strchr (file->name, '(') + 1;
+          len = strlen (name) - 1;
+        }
+      else
+#endif
+	{
+          name = file->name;
+#ifndef CONFIG_WITH_STRCACHE2
+          len = strlen (name);
+#else
+          len = strcache2_get_len (&file_strcache, name);
+#endif
+        }
+
+#ifndef CONFIG_WITH_STRCACHE2
+      for (d = enter_file (strcache_add (".SUFFIXES"))->deps; d ; d = d->next)
+        {
+          unsigned int slen = strlen (dep_name (d));
+#else
+      for (d = enter_file (suffixes_strcached)->deps; d ; d = d->next)
+        {
+          unsigned int slen = strcache2_get_len (&file_strcache, dep_name (d));
+#endif
+          if (len > slen && strneq (dep_name (d), name + (len - slen), slen))
+            {
+              file->stem = strcache_add_len (name, len - slen);
+              break;
+            }
+        }
+      if (d == 0)
+        file->stem = "";
+    }
+  star = file->stem;
+
+  /* $< is the first not order-only dependency.  */
+  less = "";
+  for (d = file->deps; d != 0; d = d->next)
+    if (!d->ignore_mtime)
+      {
+        if (!d->need_2nd_expansion)
+          less = dep_name (d);
+        break;
+      }
+
+  if (file->cmds == default_file->cmds)
+    /* This file got its commands from .DEFAULT.
+       In this case $< is the same as $@.  */
+    less = at;
+
+#define DEFINE_VARIABLE(name, len, value) \
+  (void) define_variable_for_file (name,len,value,o_automatic,0,file)
+
+  /* Define the variables.  */
+
+#ifndef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+  DEFINE_VARIABLE ("<", 1, less);
+  DEFINE_VARIABLE ("*", 1, star);
+  DEFINE_VARIABLE ("@", 1, at);
+  DEFINE_VARIABLE ("%", 1, percent);
+#else  /* CONFIG_WITH_RDONLY_VARIABLE_VALUE */
+# define DEFINE_VARIABLE_RO_VAL(name, len, value, value_len) \
+  define_variable_in_set((name), (len), (value), (value_len), -1, \
+        (o_automatic), 0, (file)->variables->set, NILF)
+
+  if (*less == '\0')
+    DEFINE_VARIABLE_RO_VAL ("<", 1, "", 0);
+  else if (less != at || at == file->name)
+    DEFINE_VARIABLE_RO_VAL ("<", 1, less, strcache_get_len (less));
+  else
+    DEFINE_VARIABLE ("<", 1, less);
+
+  if (*star == '\0')
+    DEFINE_VARIABLE_RO_VAL ("*", 1, "", 0);
+  else if (file->stem != org_stem)
+    DEFINE_VARIABLE_RO_VAL ("*", 1, star, strcache_get_len (star));
+  else
+    DEFINE_VARIABLE ("*", 1, star);
+
+  if (at == file->name)
+    DEFINE_VARIABLE_RO_VAL ("@", 1, at, strcache_get_len (at));
+  else
+    DEFINE_VARIABLE ("@", 1, at);
+
+  if (*percent == '\0')
+    DEFINE_VARIABLE_RO_VAL ("%", 1, "", 0);
+  else
+    DEFINE_VARIABLE ("%", 1, percent);
+#endif /* CONFIG_WITH_RDONLY_VARIABLE_VALUE */
+
+#if defined(CONFIG_WITH_COMMANDS_FUNC) || defined (CONFIG_WITH_DOT_MUST_MAKE)
+  /* The $^, $+, $? and $| variables should not be set if we're called
+     early by a .MUST_MAKE invocation or $(commands ).  */
+  if (called_early)
+    return;
+#endif
+
+  /* Compute the values for $^, $+, $?, and $|.  */
+#ifdef CONFIG_WITH_LAZY_DEPS_VARS
+  /* Lazy doesn't work for double colon rules with multiple files with
+     commands, nor for files that has been thru rehash_file() (vpath).  */
+  if (   (   file->double_colon
+          && (   file->double_colon != file
+             || file->last != file))
+      || file->name != file->hname) /* XXX: Rehashed files should be fixable! */
+#endif
+  {
+    static char *plus_value=0, *bar_value=0, *qmark_value=0;
+    static unsigned int plus_max=0, bar_max=0, qmark_max=0;
+
+    unsigned int qmark_len, plus_len, bar_len;
+    char *cp;
+    char *caret_value;
+    char *qp;
+    char *bp;
+    unsigned int len;
+
+    struct hash_table dep_hash;
+    void **slot;
+
+    /* Compute first the value for $+, which is supposed to contain
+       duplicate dependencies as they were listed in the makefile.  */
+
+    plus_len = 0;
+    bar_len = 0;
+    for (d = file->deps; d != 0; d = d->next)
+      {
+        if (!d->need_2nd_expansion)
+          {
+            if (d->ignore_mtime)
+#ifndef CONFIG_WITH_STRCACHE2
+              bar_len += strlen (dep_name (d)) + 1;
+#else
+              bar_len += strcache2_get_len (&file_strcache, dep_name (d)) + 1;
+#endif
+            else
+#ifndef CONFIG_WITH_STRCACHE2
+              plus_len += strlen (dep_name (d)) + 1;
+#else
+              plus_len += strcache2_get_len (&file_strcache, dep_name (d)) + 1;
+#endif
+          }
+      }
+
+    if (bar_len == 0)
+      bar_len++;
+    if (plus_len == 0)
+      plus_len++;
+
+    if (plus_len > plus_max)
+      plus_value = xrealloc (plus_value, plus_max = plus_len);
+
+    cp = plus_value;
+
+    qmark_len = plus_len + 1;   /* Will be this or less.  */
+    for (d = file->deps; d != 0; d = d->next)
+      if (! d->ignore_mtime && ! d->need_2nd_expansion)
+        {
+          const char *c = dep_name (d);
+
+#ifndef NO_ARCHIVES
+          if (ar_name (c))
+            {
+              c = strchr (c, '(') + 1;
+              len = strlen (c) - 1;
+            }
+          else
+#endif
+#ifndef CONFIG_WITH_STRCACHE2
+            len = strlen (c);
+#else
+            len = strcache2_get_len (&file_strcache, c);
+#endif
+
+          memcpy (cp, c, len);
+          cp += len;
+          *cp++ = FILE_LIST_SEPARATOR;
+          if (! (d->changed || always_make_flag))
+            qmark_len -= len + 1;       /* Don't space in $? for this one.  */
+        }
+
+    /* Kill the last space and define the variable.  */
+
+    cp[cp > plus_value ? -1 : 0] = '\0';
+    DEFINE_VARIABLE ("+", 1, plus_value);
+
+    /* Compute the values for $^, $?, and $|.  */
+
+    cp = caret_value = plus_value; /* Reuse the buffer; it's big enough.  */
+
+    if (qmark_len > qmark_max)
+      qmark_value = xrealloc (qmark_value, qmark_max = qmark_len);
+    qp = qmark_value;
+
+    if (bar_len > bar_max)
+      bar_value = xrealloc (bar_value, bar_max = bar_len);
+    bp = bar_value;
+
+    /* Make sure that no dependencies are repeated in $^, $?, and $|.  It
+       would be natural to combine the next two loops but we can't do it
+       because of a situation where we have two dep entries, the first
+       is order-only and the second is normal (see below).  */
+
+    hash_init (&dep_hash, 500, dep_hash_1, dep_hash_2, dep_hash_cmp);
+
+    for (d = file->deps; d != 0; d = d->next)
+      {
+        if (d->need_2nd_expansion)
+          continue;
+
+        slot = hash_find_slot (&dep_hash, d);
+        if (HASH_VACANT (*slot))
+          hash_insert_at (&dep_hash, d, slot);
+        else
+          {
+            /* Check if the two prerequisites have different ignore_mtime.
+               If so then we need to "upgrade" one that is order-only.  */
+
+            struct dep* hd = (struct dep*) *slot;
+
+            if (d->ignore_mtime != hd->ignore_mtime)
+              d->ignore_mtime = hd->ignore_mtime = 0;
+          }
+      }
+
+    for (d = file->deps; d != 0; d = d->next)
+      {
+        const char *c;
+
+        if (d->need_2nd_expansion || hash_find_item (&dep_hash, d) != d)
+          continue;
+
+        c = dep_name (d);
+#ifndef NO_ARCHIVES
+        if (ar_name (c))
+          {
+            c = strchr (c, '(') + 1;
+            len = strlen (c) - 1;
+          }
+        else
+#endif
+#ifndef CONFIG_WITH_STRCACHE2
+          len = strlen (c);
+#else
+          len = strcache2_get_len (&file_strcache, c);
+#endif
+
+        if (d->ignore_mtime)
+          {
+            memcpy (bp, c, len);
+            bp += len;
+            *bp++ = FILE_LIST_SEPARATOR;
+          }
+        else
+          {
+            memcpy (cp, c, len);
+            cp += len;
+            *cp++ = FILE_LIST_SEPARATOR;
+            if (d->changed || always_make_flag)
+              {
+                memcpy (qp, c, len);
+                qp += len;
+                *qp++ = FILE_LIST_SEPARATOR;
+              }
+          }
+      }
+
+    hash_free (&dep_hash, 0);
+
+    /* Kill the last spaces and define the variables.  */
+
+    cp[cp > caret_value ? -1 : 0] = '\0';
+    DEFINE_VARIABLE ("^", 1, caret_value);
+
+    qp[qp > qmark_value ? -1 : 0] = '\0';
+    DEFINE_VARIABLE ("?", 1, qmark_value);
+
+    bp[bp > bar_value ? -1 : 0] = '\0';
+    DEFINE_VARIABLE ("|", 1, bar_value);
+  }
+#undef  DEFINE_VARIABLE
+}
+
+/* Chop CMDS up into individual command lines if necessary.
+   Also set the 'lines_flags' and 'any_recurse' members.  */
+
+void
+chop_commands (struct commands *cmds)
+{
+  unsigned int nlines, idx;
+  char **lines;
+
+  /* If we don't have any commands,
+     or we already parsed them, never mind.  */
+
+  if (!cmds || cmds->command_lines != 0)
+    return;
+
+  /* Chop CMDS->commands up into lines in CMDS->command_lines.  */
+
+  if (one_shell)
+    {
+      int l = strlen (cmds->commands);
+
+      nlines = 1;
+      lines = xmalloc (nlines * sizeof (char *));
+      lines[0] = xstrdup (cmds->commands);
+
+      /* Strip the trailing newline.  */
+      if (l > 0 && lines[0][l-1] == '\n')
+        lines[0][l-1] = '\0';
+    }
+  else
+    {
+      const char *p;
+
+      nlines = 5;
+      lines = xmalloc (nlines * sizeof (char *));
+      idx = 0;
+      p = cmds->commands;
+      while (*p != '\0')
+        {
+          const char *end = p;
+        find_end:;
+          end = strchr (end, '\n');
+          if (end == 0)
+            end = p + strlen (p);
+          else if (end > p && end[-1] == '\\')
+            {
+              int backslash = 1;
+              const char *b;
+              for (b = end - 2; b >= p && *b == '\\'; --b)
+                backslash = !backslash;
+              if (backslash)
+                {
+                  ++end;
+                  goto find_end;
+                }
+            }
+
+          if (idx == nlines)
+            {
+              nlines += 2;
+              lines = xrealloc (lines, nlines * sizeof (char *));
+            }
+          lines[idx++] = xstrndup (p, end - p);
+          p = end;
+          if (*p != '\0')
+            ++p;
+        }
+
+      if (idx != nlines)
+        {
+          nlines = idx;
+          lines = xrealloc (lines, nlines * sizeof (char *));
+        }
+    }
+
+  /* Finally, set the corresponding CMDS->lines_flags elements and the
+     CMDS->any_recurse flag.  */
+
+  if (nlines > USHRT_MAX)
+    ON (fatal, &cmds->fileinfo, _("Recipe has too many lines (%ud)"), nlines);
+
+  cmds->ncommand_lines = nlines;
+  cmds->command_lines = lines;
+
+  cmds->any_recurse = 0;
+#ifndef CONFIG_WITH_COMMANDS_FUNC
+  cmds->lines_flags = xmalloc (nlines);
+#else
+  cmds->lines_flags = xmalloc (nlines * sizeof (cmds->lines_flags[0]));
+#endif
+
+  for (idx = 0; idx < nlines; ++idx)
+    {
+      unsigned char flags = 0;
+      const char *p = lines[idx];
+
+      while (ISBLANK (*p) || *p == '-' || *p == '@' || *p == '+' IF_WITH_COMMANDS_FUNC(|| *p == '%'))
+        switch (*(p++))
+          {
+          case '+':
+            flags |= COMMANDS_RECURSE;
+            break;
+          case '@':
+            flags |= COMMANDS_SILENT;
+            break;
+          case '-':
+            flags |= COMMANDS_NOERROR;
+            break;
+#ifdef CONFIG_WITH_COMMANDS_FUNC
+          case '%':
+            flags |= COMMAND_GETTER_SKIP_IT;
+            break;
+#endif
+          }
+
+      /* If no explicit '+' was given, look for MAKE variable references.  */
+      if (!(flags & COMMANDS_RECURSE)
+#ifndef KMK
+          && (strstr (p, "$(MAKE)") != 0 || strstr (p, "${MAKE}") != 0))
+#else
+          && (strstr (p, "$(KMK)") != 0 || strstr (p, "${KMK}") != 0 ||
+              strstr (p, "$(MAKE)") != 0 || strstr (p, "${MAKE}") != 0))
+#endif
+        flags |= COMMANDS_RECURSE;
+
+#ifdef CONFIG_WITH_KMK_BUILTIN
+      /* check if kmk builtin command */
+      if (!strncmp(p, "kmk_builtin_", sizeof("kmk_builtin_") - 1))
+        flags |= COMMANDS_KMK_BUILTIN;
+#endif
+
+      cmds->lines_flags[idx] = flags;
+      cmds->any_recurse |= flags & COMMANDS_RECURSE ? 1 : 0;
+    }
+}
+
+#ifdef CONFIG_WITH_MEMORY_OPTIMIZATIONS
+/* This is for saving memory in func_commands. */
+void
+free_chopped_commands (struct commands *cmds)
+{
+  if (   cmds
+      && cmds->command_lines != 0
+      && cmds->refs == 0)
+    {
+      unsigned idx = cmds->ncommand_lines;
+      while (idx-- > 0)
+        free (cmds->command_lines[idx]);
+      free (cmds->command_lines);
+      free (cmds->lines_flags);
+      cmds->command_lines = 0;
+      cmds->lines_flags = 0;
+      cmds->ncommand_lines = 0;
+    }
+}
+
+#endif /* CONFIG_WITH_MEMORY_OPTIMIZATIONS */
+/* Execute the commands to remake FILE.  If they are currently executing,
+   return or have already finished executing, just return.  Otherwise,
+   fork off a child process to run the first command line in the sequence.  */
+
+void
+execute_file_commands (struct file *file)
+{
+  const char *p;
+
+  /* Don't go through all the preparations if
+     the commands are nothing but whitespace.  */
+
+  for (p = file->cmds->commands; *p != '\0'; ++p)
+    if (!ISSPACE (*p) && *p != '-' && *p != '@' && *p != '+')
+      break;
+  if (*p == '\0')
+    {
+      /* If there are no commands, assume everything worked.  */
+#ifdef CONFIG_WITH_EXTENDED_NOTPARALLEL
+      file->command_flags |= COMMANDS_NO_COMMANDS;
+#endif
+      set_command_state (file, cs_running);
+      file->update_status = us_success;
+      notice_finished_file (file);
+      return;
+    }
+
+  /* First set the automatic variables according to this file.  */
+
+  initialize_file_variables (file, 0);
+
+#if defined(CONFIG_WITH_COMMANDS_FUNC) || defined (CONFIG_WITH_DOT_MUST_MAKE)
+  set_file_variables (file, 0 /* final call */);
+#else
+  set_file_variables (file);
+#endif
+
+  /* If this is a loaded dynamic object, unload it before remaking.
+     Some systems don't support overwriting a loaded object.  */
+  if (file->loaded)
+    unload_file (file->name);
+
+  /* Start the commands running.  */
+  new_job (file);
+}
+
+/* This is set while we are inside fatal_error_signal,
+   so things can avoid nonreentrant operations.  */
+
+int handling_fatal_signal = 0;
+
+/* Handle fatal signals.  */
+
+RETSIGTYPE
+fatal_error_signal (int sig)
+{
+#ifdef __MSDOS__
+  extern int dos_status, dos_command_running;
+
+  if (dos_command_running)
+    {
+      /* That was the child who got the signal, not us.  */
+      dos_status |= (sig << 8);
+      return;
+    }
+  remove_intermediates (1);
+  exit (EXIT_FAILURE);
+#else /* not __MSDOS__ */
+#ifdef _AMIGA
+  remove_intermediates (1);
+  if (sig == SIGINT)
+     fputs (_("*** Break.\n"), stderr);
+
+  exit (10);
+#else /* not Amiga */
+#if defined (WINDOWS32) && !defined (CONFIG_NEW_WIN32_CTRL_EVENT)
+  extern HANDLE main_thread;
+
+  /* Windows creates a sperate thread for handling Ctrl+C, so we need
+     to suspend the main thread, or else we will have race conditions
+     when both threads call reap_children.  */
+  if (main_thread)
+    {
+      DWORD susp_count = SuspendThread (main_thread);
+
+      if (susp_count != 0)
+        fprintf (stderr, "SuspendThread: suspend count = %ld\n", susp_count);
+      else if (susp_count == (DWORD)-1)
+        {
+          DWORD ierr = GetLastError ();
+
+          fprintf (stderr, "SuspendThread: error %ld: %s\n",
+                   ierr, map_windows32_error_to_string (ierr));
+        }
+    }
+#endif
+  handling_fatal_signal = 1;
+
+  /* Set the handling for this signal to the default.
+     It is blocked now while we run this handler.  */
+  signal (sig, SIG_DFL);
+
+  /* A termination signal won't be sent to the entire
+     process group, but it means we want to kill the children.  */
+
+  if (sig == SIGTERM)
+    {
+      struct child *c;
+      for (c = children; c != 0; c = c->next)
+        if (!c->remote)
+# if defined (CONFIG_NEW_WIN_CHILDREN) && defined (WINDOWS32)
+          MkWinChildKill (c->pid, SIGTERM, c);
+# else
+          (void) kill (c->pid, SIGTERM);
+# endif
+    }
+
+  /* If we got a signal that means the user
+     wanted to kill make, remove pending targets.  */
+
+  if (sig == SIGTERM || sig == SIGINT
+#ifdef SIGHUP
+    || sig == SIGHUP
+#endif
+#ifdef SIGQUIT
+    || sig == SIGQUIT
+#endif
+    )
+    {
+      struct child *c;
+
+      /* Remote children won't automatically get signals sent
+         to the process group, so we must send them.  */
+      for (c = children; c != 0; c = c->next)
+        if (c->remote)
+          (void) remote_kill (c->pid, sig);
+
+      for (c = children; c != 0; c = c->next)
+        delete_child_targets (c);
+
+      /* Clean up the children.  We don't just use the call below because
+         we don't want to print the "Waiting for children" message.  */
+      while (job_slots_used > 0)
+        reap_children (1, 0);
+    }
+  else
+    /* Wait for our children to die.  */
+    while (job_slots_used > 0)
+      reap_children (1, 1);
+
+  /* Delete any non-precious intermediate files that were made.  */
+
+  remove_intermediates (1);
+#ifdef SIGQUIT
+  if (sig == SIGQUIT)
+    /* We don't want to send ourselves SIGQUIT, because it will
+       cause a core dump.  Just exit instead.  */
+    exit (MAKE_TROUBLE);
+#endif
+
+#ifdef WINDOWS32
+# ifndef CONFIG_NEW_WIN32_CTRL_EVENT
+  if (main_thread)
+    CloseHandle (main_thread);
+# endif /* !CONFIG_NEW_WIN32_CTRL_EVENT */
+  /* Cannot call W32_kill with a pid (it needs a handle).  The exit
+     status of 130 emulates what happens in Bash.  */
+  exit (130);
+#else
+  /* Signal the same code; this time it will really be fatal.  The signal
+     will be unblocked when we return and arrive then to kill us.  */
+  if (kill (getpid (), sig) < 0)
+    pfatal_with_name ("kill");
+#endif /* not WINDOWS32 */
+#endif /* not Amiga */
+#endif /* not __MSDOS__  */
+}
+
+/* Delete FILE unless it's precious or not actually a file (phony),
+   and it has changed on disk since we last stat'd it.  */
+
+static void
+delete_target (struct file *file, const char *on_behalf_of)
+{
+  struct stat st;
+  int e;
+
+  if (file->precious || file->phony)
+    return;
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  assert (!file->multi_maybe);
+#endif
+
+#ifndef NO_ARCHIVES
+  if (ar_name (file->name))
+    {
+      time_t file_date = (file->last_mtime == NONEXISTENT_MTIME
+                          ? (time_t) -1
+                          : (time_t) FILE_TIMESTAMP_S (file->last_mtime));
+      if (ar_member_date (file->name) != file_date)
+        {
+          if (on_behalf_of)
+            OSS (error, NILF,
+                 _("*** [%s] Archive member '%s' may be bogus; not deleted"),
+                 on_behalf_of, file->name);
+          else
+            OS (error, NILF,
+                _("*** Archive member '%s' may be bogus; not deleted"),
+                file->name);
+        }
+      return;
+    }
+#endif
+
+  EINTRLOOP (e, stat (file->name, &st));
+  if (e == 0
+      && S_ISREG (st.st_mode)
+      && FILE_TIMESTAMP_STAT_MODTIME (file->name, st) != file->last_mtime)
+    {
+      if (on_behalf_of)
+        OSS (error, NILF,
+             _("*** [%s] Deleting file '%s'"), on_behalf_of, file->name);
+      else
+        OS (error, NILF, _("*** Deleting file '%s'"), file->name);
+      if (unlink (file->name) < 0
+          && errno != ENOENT)   /* It disappeared; so what.  */
+        perror_with_name ("unlink: ", file->name);
+    }
+}
+
+
+/* Delete all non-precious targets of CHILD unless they were already deleted.
+   Set the flag in CHILD to say they've been deleted.  */
+
+void
+delete_child_targets (struct child *child)
+{
+  struct dep *d;
+
+  if (child->deleted)
+    return;
+
+  /* Delete the target file if it changed.  */
+  delete_target (child->file, NULL);
+
+  /* Also remove any non-precious targets listed in the 'also_make' member.  */
+  for (d = child->file->also_make; d != 0; d = d->next)
+    delete_target (d->file, child->file->name);
+
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  /* Also remove any multi target siblings, except for the 'maybe' ones (we
+     handle that here) and precious ones (delete_target deals with that).
+     Note that CHILD is always the multi target head (see remake.c).  */
+  if (child->file == child->file->multi_head)
+    {
+      struct file *f2;
+      for (f2 = child->file->multi_next; f2; f2 = f2->multi_next)
+        if (!f2->multi_maybe)
+          delete_target (f2, child->file->name);
+    }
+#endif
+
+  child->deleted = 1;
+}
+
+/* Print out the commands in CMDS.  */
+
+void
+print_commands (const struct commands *cmds)
+{
+  const char *s;
+
+  fputs (_("#  recipe to execute"), stdout);
+
+  if (cmds->fileinfo.filenm == 0)
+    puts (_(" (built-in):"));
+  else
+    printf (_(" (from '%s', line %lu):\n"),
+            cmds->fileinfo.filenm, cmds->fileinfo.lineno);
+
+  s = cmds->commands;
+  while (*s != '\0')
+    {
+      const char *end;
+      int bs;
+
+      /* Print one full logical recipe line: find a non-escaped newline.  */
+      for (end = s, bs = 0; *end != '\0'; ++end)
+        {
+          if (*end == '\n' && !bs)
+            break;
+
+          bs = *end == '\\' ? !bs : 0;
+        }
+
+      printf ("%c%.*s\n", cmd_prefix, (int) (end - s), s);
+
+      s = end + (end[0] == '\n');
+    }
+}
diff --git a/src/kmk/commands.h b/src/kmk/commands.h
new file mode 100644
index 0000000..f06367b
--- /dev/null
+++ b/src/kmk/commands.h
@@ -0,0 +1,70 @@
+/* Definition of data structures describing shell commands for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Structure that gives the commands to make a file
+   and information about where these commands came from.  */
+
+struct commands
+  {
+    floc fileinfo;              /* Where commands were defined.  */
+    char *commands;             /* Commands text.  */
+    char **command_lines;       /* Commands chopped up into lines.  */
+#ifdef CONFIG_WITH_COMMANDS_FUNC
+    unsigned short *lines_flags;/* One set of flag bits for each line.  */
+#else
+    unsigned char *lines_flags; /* One set of flag bits for each line.  */
+#endif
+    unsigned short ncommand_lines;/* Number of command lines.  */
+    char recipe_prefix;         /* Recipe prefix for this command set.  */
+    unsigned int any_recurse:1; /* Nonzero if any 'lines_flags' elt has */
+                                /* the COMMANDS_RECURSE bit set.  */
+#ifdef CONFIG_WITH_MEMORY_OPTIMIZATIONS
+    int refs;			/* References.  */
+#endif
+  };
+
+/* Bits in 'lines_flags'.  */
+#define COMMANDS_RECURSE        1 /* Recurses: + or $(MAKE).  */
+#define COMMANDS_SILENT         2 /* Silent: @.  */
+#define COMMANDS_NOERROR        4 /* No errors: -.  */
+#ifdef CONFIG_WITH_EXTENDED_NOTPARALLEL
+# define COMMANDS_NOTPARALLEL   32  /* kmk: The commands must be executed alone. */
+# define COMMANDS_NO_COMMANDS   64  /* kmk: No commands. */
+#endif
+#ifdef CONFIG_WITH_KMK_BUILTIN
+# define COMMANDS_KMK_BUILTIN   128 /* kmk: kmk builtin command. */
+#endif
+#ifdef CONFIG_WITH_COMMANDS_FUNC
+# define COMMAND_GETTER_SKIP_IT 256 /* $(commands target) skips this: % */
+#endif
+
+RETSIGTYPE fatal_error_signal (int sig);
+void execute_file_commands (struct file *file);
+void print_commands (const struct commands *cmds);
+void delete_child_targets (struct child *child);
+void chop_commands (struct commands *cmds);
+#ifdef CONFIG_WITH_MEMORY_OPTIMIZATIONS
+void free_chopped_commands (struct commands *cmd);
+#endif
+#if defined(CONFIG_WITH_COMMANDS_FUNC) || defined (CONFIG_WITH_DOT_MUST_MAKE)
+void set_file_variables (struct file *file, int called_early);
+#else
+void set_file_variables (struct file *file);
+#endif
+#ifdef CONFIG_WITH_LAZY_DEPS_VARS
+struct dep *create_uniqute_deps_chain (struct dep *deps);
+#endif
+
diff --git a/src/kmk/config.ami.template b/src/kmk/config.ami.template
new file mode 100644
index 0000000..4c5bb78
--- /dev/null
+++ b/src/kmk/config.ami.template
@@ -0,0 +1,337 @@
+/* config.h -- hand-massaged for Amiga                                  -*-C-*-
+Copyright (C) 1995-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Define if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* #undef _ALL_SOURCE */
+#endif
+
+/* Define if using alloca.c.  */
+#define C_ALLOCA
+
+/* Define if the closedir function returns void instead of int.  */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to empty if the keyword does not work.  */
+/* #undef const */
+
+/* Define to one of _getb67, GETB67, getb67 for Cray-2 and Cray-YMP systems.
+   This function is required for alloca.c support on those systems.  */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define for DGUX with <sys/dg_sys_info.h>.  */
+/* #undef DGUX */
+
+/* Define if the 'getloadavg' function needs to be run setuid or setgid.  */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 'unsigned long' or 'unsigned long long'
+   if <inttypes.h> doesn't define.  */
+#define uintmax_t unsigned long
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+#define gid_t int
+
+/* Define if you have alloca, as a function or macro.  */
+/* #undef HAVE_ALLOCA */
+
+/* Define if you have <alloca.h> and it should be used (not on Ultrix).  */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define if your system has a working fnmatch function.  */
+/* #undef HAVE_FNMATCH */
+
+/* Define if your system has its own 'getloadavg' function.  */
+/* #undef HAVE_GETLOADAVG */
+
+/* Define if you have the getmntent function.  */
+/* #undef HAVE_GETMNTENT */
+
+/* Embed GNU Guile support */
+/* #undef HAVE_GUILE */
+
+/* Define if the 'long double' type works.  */
+/* #undef HAVE_LONG_DOUBLE */
+
+/* Define if you support file names longer than 14 characters.  */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define if you have a working 'mmap' system call.  */
+/* #undef HAVE_MMAP */
+
+/* Define if system calls automatically restart after interruption
+   by a signal.  */
+/* #undef HAVE_RESTARTABLE_SYSCALLS */
+
+/* Define if your struct stat has st_blksize.  */
+/* #undef HAVE_ST_BLKSIZE */
+
+/* Define if your struct stat has st_blocks.  */
+/* #undef HAVE_ST_BLOCKS */
+
+/* Define if you have the strcoll function and it is properly defined.  */
+#define HAVE_STRCOLL 1
+
+/* Define if your struct stat has st_rdev.  */
+#define HAVE_ST_RDEV 1
+
+/* Define if you have the strftime function.  */
+#define HAVE_STRFTIME 1
+
+/* Define if you have <sys/wait.h> that is POSIX.1 compatible.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define if your struct tm has tm_zone.  */
+/* #undef HAVE_TM_ZONE */
+
+/* Define if you don't have tm_zone but do have the external array
+   tzname.  */
+#define HAVE_TZNAME 1
+
+/* Define if you have <unistd.h>.  */
+#define HAVE_UNISTD_H 1
+
+/* Define if utime(file, NULL) sets file's timestamp to the present.  */
+/* #undef HAVE_UTIME_NULL */
+
+/* Define if you have the wait3 system call.  */
+/* #undef HAVE_WAIT3 */
+
+/* Define if on MINIX.  */
+/* #undef _MINIX */
+
+/* Define if your struct nlist has an n_un member.  */
+/* #undef NLIST_NAME_UNION */
+
+/* Define if you have <nlist.h>.  */
+/* #undef NLIST_STRUCT */
+
+/* Define if your C compiler doesn't accept -c and -o together.  */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+#define pid_t int
+
+/* Define if the system does not provide POSIX.1 features except
+   with this defined.  */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define if you need to in order for stat and other things to work.  */
+/* #undef _POSIX_SOURCE */
+
+/* Define as the return type of signal handlers (int or void).  */
+#define RETSIGTYPE void
+
+/* Define if the setvbuf function takes the buffering type as its second
+   argument and the buffer pointer as the third, as on System V
+   before release 3.  */
+/* #undef SETVBUF_REVERSED */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+        STACK_DIRECTION > 0 => grows toward higher addresses
+        STACK_DIRECTION < 0 => grows toward lower addresses
+        STACK_DIRECTION = 0 => direction of growth unknown
+ */
+#define STACK_DIRECTION -1
+
+/* Define if the 'S_IS*' macros in <sys/stat.h> do not work properly.  */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define if you have the ANSI C header files.  */
+#define STDC_HEADERS
+
+/* Define on System V Release 4.  */
+/* #undef SVR4 */
+
+/* Define if 'sys_siglist' is declared by <signal.h>.  */
+/* #undef SYS_SIGLIST_DECLARED */
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+#define uid_t int
+
+/* Define for Encore UMAX.  */
+/* #undef UMAX */
+
+/* Define for Encore UMAX 4.3 that has <inq_status/cpustats.h>
+   instead of <sys/cpustats.h>.  */
+/* #undef UMAX4_3 */
+
+/* Name of this package (needed by automake) */
+#define PACKAGE "%PACKAGE%"
+
+/* Version of this package (needed by automake) */
+#define VERSION "%VERSION%"
+
+/* Define to the name of the SCCS 'get' command.  */
+#define SCCS_GET "get"
+
+/* Define this if the SCCS 'get' command understands the '-G<file>' option.  */
+/* #undef SCCS_GET_MINUS_G */
+
+/* Define this to enable job server support in GNU make.  */
+/* #undef MAKE_JOBSERVER */
+
+/* Define to be the nanoseconds member of struct stat's st_mtim,
+   if it exists.  */
+/* #undef ST_MTIM_NSEC */
+
+/* Define this if the C library defines the variable 'sys_siglist'.  */
+/* #undef HAVE_SYS_SIGLIST */
+
+/* Define this if the C library defines the variable '_sys_siglist'.  */
+/* #undef HAVE__SYS_SIGLIST */
+
+/* Define this if you have the 'union wait' type in <sys/wait.h>.  */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define if you have the dup2 function.  */
+/* #undef HAVE_DUP2 */
+
+/* Define if you have the getcwd function.  */
+#define HAVE_GETCWD 1
+
+/* Define if you have the getgroups function.  */
+/* #undef HAVE_GETGROUPS */
+
+/* Define if you have the gethostbyname function.  */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define if you have the gethostname function.  */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define if you have the memmove function.  */
+#define HAVE_MEMMOVE 1
+
+/* Define if you have the mktemp function.  */
+#define HAVE_MKTEMP 1
+
+/* Define if you have the psignal function.  */
+/* #undef HAVE_PSIGNAL */
+
+/* Define if you have the pstat_getdynamic function.  */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define if you have the setegid function.  */
+/* #undef HAVE_SETEGID */
+
+/* Define if you have the seteuid function.  */
+/* #undef HAVE_SETEUID */
+
+/* Define if you have the setlinebuf function.  */
+/* #undef HAVE_SETLINEBUF */
+
+/* Define if you have the setregid function.  */
+/* #undef HAVE_SETREGID */
+
+/* Define if you have the setreuid function.  */
+/* #undef HAVE_SETREUID */
+
+/* Define if you have the sigsetmask function.  */
+/* #undef HAVE_SIGSETMASK */
+
+/* Define if you have the socket function.  */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the strcasecmp function.  */
+/* #undef HAVE_STRCASECMP */
+
+/* Define to 1 if you have the strcmpi function.  */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the stricmp function.  */
+/* #undef HAVE_STRICMP */
+
+/* Define if you have the strerror function.  */
+#define HAVE_STRERROR 1
+
+/* Define if you have the strsignal function.  */
+/* #undef HAVE_STRSIGNAL */
+
+/* Define if you have the wait3 function.  */
+/* #undef HAVE_WAIT3 */
+
+/* Define if you have the waitpid function.  */
+/* #undef HAVE_WAITPID */
+
+/* Define if you have the <dirent.h> header file.  */
+#define HAVE_DIRENT_H 1
+
+/* Define if you have the <fcntl.h> header file.  */
+#define HAVE_FCNTL_H 1
+
+/* Define if you have the <limits.h> header file.  */
+#define HAVE_LIMITS_H 1
+
+/* Define if you have the <mach/mach.h> header file.  */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define if you have the <memory.h> header file.  */
+/* #undef HAVE_MEMORY_H */
+
+/* Define if you have the <ndir.h> header file.  */
+/* #undef HAVE_NDIR_H */
+
+/* Define if you have the <stdlib.h> header file.  */
+/* #undef HAVE_STDLIB_H */
+
+/* Define if you have the <string.h> header file.  */
+#define HAVE_STRING_H 1
+
+/* Define if you have the <sys/dir.h> header file.  */
+#define HAVE_SYS_DIR_H 1
+
+/* Define if you have the <sys/ndir.h> header file.  */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define if you have the <sys/param.h> header file.  */
+/* #undef HAVE_SYS_PARAM_H */
+
+/* Define if you have the <sys/timeb.h> header file.  */
+/* #undef HAVE_SYS_TIMEB_H */
+
+/* Define if you have the <sys/wait.h> header file.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define if you have the <unistd.h> header file.  */
+#define HAVE_UNISTD_H 1
+
+/* Define if you have the dgc library (-ldgc).  */
+/* #undef HAVE_LIBDGC */
+
+/* Define if you have the kstat library (-lkstat).  */
+/* #undef HAVE_LIBKSTAT */
+
+/* Define to 1 if you have the `isatty' function. */
+/* #undef HAVE_ISATTY */
+
+/* Define to 1 if you have the `ttyname' function. */
+/* #undef HAVE_TTYNAME */
+
+/* Define if you have the sun library (-lsun).  */
+/* #undef HAVE_LIBSUN */
+
+/* Output sync sypport */
+#define NO_OUTPUT_SYNC
+
+/* Define for Case Insensitve behavior */
+#define HAVE_CASE_INSENSITIVE_FS
+
+/* Build host information. */
+#define MAKE_HOST "Amiga"
diff --git a/src/kmk/config.h-vms.template b/src/kmk/config.h-vms.template
new file mode 100644
index 0000000..2a4a943
--- /dev/null
+++ b/src/kmk/config.h-vms.template
@@ -0,0 +1,432 @@
+/* config.h-vms. Generated by hand by Klaus Kämpf <kkaempf@rmi.de>      -*-C-*-
+
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* config.h.  Generated automatically by configure.  */
+/* config.h.in.  Generated automatically from configure.ac by autoheader.  */
+
+/* Pull in types.h here to get __CRTL_VER defined for old versions of the
+   compiler which don't define it. */
+#ifdef __DECC
+# include <types.h>
+#endif
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* #undef _ALL_SOURCE */
+#endif
+
+/* Define to 1 if NLS is requested.  */
+/* #undef ENABLE_NLS */
+
+/* Define as 1 if you have dcgettext.  */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define as 1 if you have gettext and don't want to use GNU gettext.  */
+/* #undef HAVE_GETTEXT */
+
+/* Embed GNU Guile support */
+/* #undef HAVE_GUILE */
+
+/* Define to 1 if your locale.h file contains LC_MESSAGES.  */
+/* #undef HAVE_LC_MESSAGES */
+
+/* Define to the installation directory for locales.  */
+#define LOCALEDIR ""
+
+/* Define as 1 if you have the stpcpy function.  */
+/* #undef HAVE_STPCPY */
+
+/* Define to 1 if the closedir function returns void instead of int.  */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to empty if the keyword does not work.  */
+/* #undef const */
+
+/* Define to one of _getb67, GETB67, getb67 for Cray-2 and Cray-YMP systems.
+   This function is required for alloca.c support on those systems.  */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define for DGUX with <sys/dg_sys_info.h>.  */
+/* #undef DGUX */
+
+/* Define to 1 if the 'getloadavg' function needs to be run setuid or setgid.  */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 'unsigned long' or 'unsigned long long'
+   if <inttypes.h> doesn't define.  */
+#define uintmax_t unsigned long
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+/* #undef gid_t */
+
+/* Define to 1 if you have alloca, as a function or macro.  */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).  */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define to 1 if you have the fdopen function.  */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if your system has a working fnmatch function.  */
+/* #undef HAVE_FNMATCH */
+
+/* Define to 1 if your system has its own 'getloadavg' function.  */
+/* #undef HAVE_GETLOADAVG */
+
+/* Define to 1 if you have the getmntent function.  */
+/* #undef HAVE_GETMNTENT */
+
+/* Define to 1 if the 'long double' type works.  */
+/* #undef HAVE_LONG_DOUBLE */
+
+/* Define to 1 if you support file names longer than 14 characters.  */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define to 1 if you have a working 'mmap' system call.  */
+/* #undef HAVE_MMAP */
+
+/* Define to 1 if system calls automatically restart after interruption
+   by a signal.  */
+/* #undef HAVE_RESTARTABLE_SYSCALLS */
+
+/* Define to 1 if your struct stat has st_blksize.  */
+/* #undef HAVE_ST_BLKSIZE */
+
+/* Define to 1 if your struct stat has st_blocks.  */
+/* #undef HAVE_ST_BLOCKS */
+
+/* Define to 1 if you have the strcoll function and it is properly defined.  */
+/* #undef HAVE_STRCOLL */
+
+/* Define to 1 if you have the strncasecmp' function. */
+#if __CRTL_VER >= 70000000
+#define HAVE_STRNCASECMP 1
+#endif
+
+/* Define to 1 if your struct stat has st_rdev.  */
+/* #undef HAVE_ST_RDEV */
+
+/* Define to 1 if you have the strftime function.  */
+/* #undef HAVE_STRFTIME */
+
+/* Define to 1 if you have <sys/wait.h> that is POSIX.1 compatible.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to 1 if your struct tm has tm_zone.  */
+/* #undef HAVE_TM_ZONE */
+
+/* Define to 1 if you don't have tm_zone but do have the external array
+   tzname.  */
+/* #undef HAVE_TZNAME */
+
+/* Define to 1 if you have <unistd.h>.  */
+#ifdef __DECC
+#define HAVE_UNISTD_H 1
+#endif
+
+/* Define to 1 if utime(file, NULL) sets file's timestamp to the present.  */
+/* #undef HAVE_UTIME_NULL */
+
+/* Define to 1 if you have the wait3 system call.  */
+/* #undef HAVE_WAIT3 */
+
+/* Define to 1 if on MINIX.  */
+/* #undef _MINIX */
+
+/* Define to 1 if your struct nlist has an n_un member.  */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if you have <nlist.h>.  */
+/* #undef NLIST_STRUCT */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together.  */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+/* I assume types.h is available for all 5.0 cc/cxx compilers */
+#if __DECC_VER < 50090000
+#define pid_t int
+#endif
+
+/* Define to 1 if the system does not provide POSIX.1 features except
+   with this defined.  */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for stat and other things to work.  */
+/* #undef _POSIX_SOURCE */
+
+/* Define as the return type of signal handlers (int or void).  */
+#define RETSIGTYPE void
+
+/* Define to 1 if the setvbuf function takes the buffering type as its second
+   argument and the buffer pointer as the third, as on System V
+   before release 3.  */
+/* #undef SETVBUF_REVERSED */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+        STACK_DIRECTION > 0 => grows toward higher addresses
+        STACK_DIRECTION < 0 => grows toward lower addresses
+        STACK_DIRECTION = 0 => direction of growth unknown
+ */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the 'S_IS*' macros in <sys/stat.h> do not work properly.  */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files.  */
+/* #undef STDC_HEADERS */
+
+/* Define on System V Release 4.  */
+/* #undef SVR4 */
+
+/* Define to 1 if 'sys_siglist' is declared by <signal.h>.  */
+/* #undef SYS_SIGLIST_DECLARED */
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+#if __DECC_VER < 50090000
+#define uid_t int
+#endif
+
+/* Define for Encore UMAX.  */
+/* #undef UMAX */
+
+/* Define for Encore UMAX 4.3 that has <inq_status/cpustats.h>
+   instead of <sys/cpustats.h>.  */
+/* #undef UMAX4_3 */
+
+/* Name of this package (needed by automake) */
+#define PACKAGE "%PACKAGE%"
+
+/* Version of this package (needed by automake) */
+#define VERSION "%VERSION%"
+
+/* Define to the name of the SCCS 'get' command.  */
+/* #undef SCCS_GET */
+
+/* Define this if the SCCS 'get' command understands the '-G<file>' option.  */
+/* #undef SCCS_GET_MINUS_G */
+
+/* Define this to enable job server support in GNU make.  */
+/* #undef MAKE_JOBSERVER */
+
+/* Define to be the nanoseconds member of struct stat's st_mtim,
+   if it exists.  */
+/* #undef ST_MTIM_NSEC */
+
+/* Define to 1 if the C library defines the variable 'sys_siglist'.  */
+/* #undefine HAVE_SYS_SIGLIST */
+
+/* Define to 1 if the C library defines the variable '_sys_siglist'.  */
+/* #undef HAVE__SYS_SIGLIST */
+
+/* Define to 1 if you have the 'union wait' type in <sys/wait.h>.  */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the dup2 function.  */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the getcwd function.  */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the getgroups function.  */
+/* #undef HAVE_GETGROUPS */
+
+/* Define to 1 if you have the gethostbyname function.  */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the gethostname function.  */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the memmove function.  */
+#define HAVE_MEMMOVE 1
+
+/* Define to 1 if you have the mktemp function.  */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the psignal function.  */
+/* #undef HAVE_PSIGNAL */
+
+/* Define to 1 if you have the pstat_getdynamic function.  */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the setegid function.  */
+/* #undef HAVE_SETEGID */
+
+/* Define to 1 if you have the seteuid function.  */
+/* #undef HAVE_SETEUID */
+
+/* Define to 1 if you have the setlinebuf function.  */
+/* #undef HAVE_SETLINEBUF */
+
+/* Define to 1 if you have the setregid function.  */
+/* #undefine HAVE_SETREGID */
+
+/* Define to 1 if you have the setreuid function.  */
+/* #define HAVE_SETREUID */
+
+/* Define to 1 if you have the sigsetmask function.  */
+#define HAVE_SIGSETMASK 1
+
+/* Define to 1 if you have the socket function.  */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the strcasecmp function.  */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function.  */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the stricmp function.  */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the strerror function.  */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the strsignal function.  */
+/* #undef HAVE_STRSIGNAL */
+
+/* Define to 1 if you have the wait3 function.  */
+/* #undef HAVE_WAIT3 */
+
+/* Define to 1 if you have the waitpid function.  */
+/* #undef HAVE_WAITPID */
+
+/* Define to 1 if you have the <dirent.h> header file.  */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you have the <fcntl.h> header file.  */
+#ifdef __DECC
+#define HAVE_FCNTL_H 1
+#endif
+
+/* Define to 1 if you have the <limits.h> header file.  */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <mach/mach.h> header file.  */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file.  */
+/* #undef HAVE_MEMORY_H */
+
+/* Define to 1 if you have the <ndir.h> header file.  */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <stdlib.h> header file.  */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <string.h> header file.  */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/dir.h> header file.  */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file.  */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file.  */
+/* #undef HAVE_SYS_PARAM_H */
+
+/* Define to 1 if you have the <sys/timeb.h> header file.  */
+#ifndef __GNUC__
+#define HAVE_SYS_TIMEB_H 1
+#endif
+
+/* Define to 1 if you have the <sys/wait.h> header file.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to 1 if you have the dgc library (-ldgc).  */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the kstat library (-lkstat).  */
+/* #undef HAVE_LIBKSTAT *
+
+/* Define to 1 if you have the sun library (-lsun).  */
+/* #undef HAVE_LIBSUN */
+
+/* Define to 1 if you have the `isatty' function. */
+/* #undef HAVE_ISATTY */
+
+/* Define to 1 if you have the `ttyname' function. */
+/* #undef HAVE_TTYNAME */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define for case insensitve filenames */
+#define HAVE_CASE_INSENSITIVE_FS 1
+
+/* VMS specific, define it if you want to use case sensitive targets */
+/* #undef WANT_CASE_SENSITIVE_TARGETS */
+
+/* VMS specific, V7.0 has opendir() and friends, so it's undefined */
+/* If you want to use non-VMS code for opendir() etc. on V7.0 and greater
+   define the first or both macros AND change the compile command to get the
+   non-VMS versions linked: (prefix=(all,except=(opendir,...  */
+/* #undef HAVE_VMSDIR_H */
+/* #undef _DIRENT_HAVE_D_NAMLEN */
+
+/* On older systems without 7.0 backport of CRTL use non-VMS code for opendir() etc. */
+#if __CRTL_VER < 70000000
+# define HAVE_VMSDIR_H 1
+#endif
+
+#if defined(HAVE_VMSDIR_H) && defined(HAVE_DIRENT_H)
+#undef HAVE_DIRENT_H
+#endif
+
+#define HAVE_STDLIB_H 1
+#define INCLUDEDIR "sys$sysroot:[syslib]"
+#define LIBDIR "sys$sysroot:[syslib]"
+
+/* Don't use RTL functions of OpenVMS */
+#ifdef __DECC
+#include <stdio.h>
+#include <unistd.h>
+#define getopt   gnu_getopt
+#define optarg   gnu_optarg
+#define optopt   gnu_optopt
+#define optind   gnu_optind
+#define opterr   gnu_opterr
+#define globfree gnu_globfree
+#define glob     gnu_glob
+#endif
+
+/* Define if using alloca.c.  */
+/* #undef C_ALLOCA */
+/* maybe this should be placed into makeint.h */
+#if     defined(__VAX) && defined(__DECC)
+#define alloca(n)       __ALLOCA(n)
+#endif
+
+/* Output sync sypport */
+#define NO_OUTPUT_SYNC
+
+/* Define to 1 to write even short single-line actions into a VMS/DCL command
+   file; this also enables exporting make environment variables into the
+   (sub-)process, which executes the action.
+   The usual make rules apply whether a shell variable - here a DCL symbol or
+   VMS logical [see CRTL getenv()] - is added to the make environment and
+   is exported. */
+#define USE_DCL_COM_FILE 1
+
+/* Build host information. */
+#define MAKE_HOST "VMS"
diff --git a/src/kmk/config.h.W32.template b/src/kmk/config.h.W32.template
new file mode 100644
index 0000000..73446e0
--- /dev/null
+++ b/src/kmk/config.h.W32.template
@@ -0,0 +1,532 @@
+/* config.h.W32 -- hand-massaged config.h file for Windows builds       -*-C-*-
+
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Suppress some Visual C++ warnings.
+   Maybe after the code cleanup for ISO C we can remove some/all of these.  */
+#if _MSC_VER > 1000
+# pragma warning(disable:4100) /* unreferenced formal parameter */
+# pragma warning(disable:4102) /* unreferenced label */
+# pragma warning(disable:4127) /* conditional expression is constant */
+# pragma warning(disable:4131) /* uses old-style declarator */
+# pragma warning(disable:4702) /* unreachable code */
+# define _CRT_SECURE_NO_WARNINGS  /* function or variable may be unsafe */
+# define _CRT_NONSTDC_NO_WARNINGS /* functions w/o a leading underscore */
+#endif
+
+/* Define to 1 if the 'closedir' function returns void instead of 'int'. */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to one of '_getb67', 'GETB67', 'getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for 'alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using 'alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if using 'getloadavg.c'. */
+#define C_GETLOADAVG 1
+
+/* Define to 1 for DGUX with <sys/dg_sys_info.h>. */
+/* #undef DGUX */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+/* #undef ENABLE_NLS */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define to 1 if the 'getloadavg' function needs to be run setuid or setgid.
+   */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 1 if you have 'alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define to 1 if you have the 'atexit' function. */
+#define HAVE_ATEXIT 1
+
+/* Use case insensitive file names */
+/* #undef HAVE_CASE_INSENSITIVE_FS */
+
+/* Define to 1 if you have the clock_gettime function. */
+/* #undef HAVE_CLOCK_GETTIME */
+
+/* Embed GNU Guile support.  Windows build sets this on the
+   compilation command line.  */
+/* #undef HAVE_GUILE */
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define to 1 if you have the declaration of 'bsd_signal', and to 0 if you
+   don't. */
+#define HAVE_DECL_BSD_SIGNAL 0
+
+/* Define to 1 if you have the declaration of 'sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL_SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of '_sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL__SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of '__sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL___SYS_SIGLIST 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines 'DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you have the <direct.h> header file, and it defines getcwd()
+   and chdir().
+   */
+#if (defined(_MSC_VER) || defined(__BORLANDC__)) && !defined(__INTERIX)
+# define HAVE_DIRECT_H 1
+#endif
+
+/* Use platform specific coding */
+#define HAVE_DOS_PATHS 1
+
+/* Define to 1 if you have the 'dup2' function. */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the 'fdopen' function. */
+#ifdef __MINGW32__
+#define HAVE_FDOPEN 1
+#endif
+
+/* Define to 1 if you have the 'fileno' function. */
+#define HAVE_FILENO 1
+
+/* Define to 1 if you have the 'getcwd' function.  */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the 'getgroups' function. */
+/* #undef HAVE_GETGROUPS */
+
+/* Define to 1 if you have the 'gethostbyname' function. */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the 'gethostname' function. */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the 'getloadavg' function. */
+/* #undef HAVE_GETLOADAVG */
+
+/* Define to 1 if you have the 'getrlimit' function. */
+/* #undef HAVE_GETRLIMIT */
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+/* #undef HAVE_GETTEXT */
+
+/* Define to 1 if you have a standard gettimeofday function */
+#ifdef __MINGW32__
+#define HAVE_GETTIMEOFDAY 1
+#endif
+
+/* Define if you have the iconv() function. */
+/* #undef HAVE_ICONV */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_INTTYPES_H 1
+#endif
+
+/* Define to 1 if you have the 'dgc' library (-ldgc). */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the 'kstat' library (-lkstat). */
+/* #undef HAVE_LIBKSTAT */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+/*#define HAVE_LOCALE_H 1*/
+
+/* Define to 1 if you have the 'lstat' function. */
+/* #undef HAVE_LSTAT */
+
+/* Define to 1 if you have the <mach/mach.h> header file. */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the 'mkstemp' function. */
+/* #undef HAVE_MKSTEMP */
+
+/* Define to 1 if you have the 'mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines 'DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nlist.h> header file. */
+/* #undef HAVE_NLIST_H */
+
+/* Define to 1 if you have the 'pipe' function. */
+/* #undef HAVE_PIPE */
+
+/* Define to 1 if you have the 'pstat_getdynamic' function. */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the 'readlink' function. */
+/* #undef HAVE_READLINK */
+
+/* Define to 1 if you have the 'realpath' function. */
+/* #undef HAVE_REALPATH */
+
+/* Define to 1 if <signal.h> defines the SA_RESTART constant. */
+/* #undef HAVE_SA_RESTART */
+
+/* Define to 1 if you have the 'setegid' function. */
+/* #undef HAVE_SETEGID */
+
+/* Define to 1 if you have the 'seteuid' function. */
+/* #undef HAVE_SETEUID */
+
+/* Define to 1 if you have the 'setlinebuf' function. */
+/* #undef HAVE_SETLINEBUF */
+
+/* Define to 1 if you have the 'setlocale' function. */
+/*#define HAVE_SETLOCALE 1*/
+
+/* Define to 1 if you have the 'setregid' function. */
+/* #undef HAVE_SETREGID */
+
+/* Define to 1 if you have the 'setreuid' function. */
+/* #undef HAVE_SETREUID */
+
+/* Define to 1 if you have the 'setrlimit' function. */
+/* #undef HAVE_SETRLIMIT */
+
+/* Define to 1 if you have the 'setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+/* Define to 1 if you have the 'sigaction' function. */
+/* #undef HAVE_SIGACTION */
+
+/* Define to 1 if you have the 'sigsetmask' function. */
+/* #undef HAVE_SIGSETMASK */
+
+/* Define to 1 if you have the 'socket' function. */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_STDINT_H 1
+#endif
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the 'strcasecmp' function. */
+#ifdef __MINGW32__
+#define HAVE_STRCASECMP 1
+#endif
+
+/* Define to 1 if you have the 'strcmpi' function. */
+#define HAVE_STRCMPI 1
+
+/* Define to 1 if you have the 'strcoll' function and it is properly defined.
+   */
+#define HAVE_STRCOLL 1
+
+/* Define to 1 if you have the 'strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the 'strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the 'stricmp' function. */
+#define HAVE_STRICMP 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+/* #define HAVE_STRINGS_H 1 */
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the 'strncasecmp' function. */
+#ifdef __MINGW32__
+#define HAVE_STRNCASECMP 1
+#endif
+
+/* Define to 1 if you have the 'strncmpi' function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the 'strndup' function. */
+/* #undef HAVE_STRNDUP */
+
+/* Define to 1 if you have the 'strnicmp' function. */
+#ifdef __MINGW32__
+#define HAVE_STRNICMP 1
+#endif
+
+/* Define to 1 if you have the 'strsignal' function. */
+/* #undef HAVE_STRSIGNAL */
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `ttyname' function. */
+#define HAVE_TTYNAME 1
+char *ttyname (int);
+
+/* Define to 1 if 'n_un.n_name' is a member of 'struct nlist'. */
+/* #undef HAVE_STRUCT_NLIST_N_UN_N_NAME */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines 'DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines 'DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_SYS_PARAM_H 1
+#endif
+
+/* Define to 1 if you have the <sys/resource.h> header file. */
+/* #undef HAVE_SYS_RESOURCE_H */
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/timeb.h> header file. */
+#define HAVE_SYS_TIMEB_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_SYS_TIME_H 1
+#endif
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to 1 if you have the \'union wait' type in <sys/wait.h>. */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_UNISTD_H 1
+#endif
+
+/* Define to 1 if you have the 'wait3' function. */
+/* #undef HAVE_WAIT3 */
+
+/* Define to 1 if you have the 'waitpid' function. */
+/* #undef HAVE_WAITPID */
+
+/* Build host information. (not used by kmk) */
+#define MAKE_HOST "Windows32"
+
+/* Define to 1 to enable job server support in GNU make. */
+#define MAKE_JOBSERVER 1
+
+/* Define to 1 to enable 'load' support in GNU make. */
+#define MAKE_LOAD 1
+
+/* Define to 1 to enable symbolic link timestamp checking. */
+/* #undef MAKE_SYMLINKS */
+
+/* Define to 1 if your 'struct nlist' has an 'n_un' member. Obsolete, depend
+   on 'HAVE_STRUCT_NLIST_N_UN_N_NAME */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if struct nlist.n_name is a pointer rather than an array. */
+/* #undef NLIST_STRUCT */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Name of this package (needed by automake) */
+#define PACKAGE "%PACKAGE%"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bug-make@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "GNU make"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL "http://www.gnu.org/software/make/"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "%VERSION%"
+
+/* Define to the character that separates directories in PATH. */
+#define PATH_SEPARATOR_CHAR ';'
+
+/* Define as the return type of signal handlers ('int' or 'void'). */
+#define RETSIGTYPE void
+
+/* Define to the name of the SCCS 'get' command. */
+#define SCCS_GET "echo no sccs get"
+
+/* Define this if the SCCS 'get' command understands the '-G<file>' option. */
+/* #undef SCCS_GET_MINUS_G */
+
+/* Define to 1 if the 'setvbuf' function takes the buffering type as its
+   second argument and the buffer pointer as the third, as on System V before
+   release 3. */
+/* #undef SETVBUF_REVERSED */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run time.
+        STACK_DIRECTION > 0 => grows toward higher addresses
+        STACK_DIRECTION < 0 => grows toward lower addresses
+        STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the 'S_IS*' macros in <sys/stat.h> do not work properly. */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if struct stat contains a nanoseconds field */
+/* #undef ST_MTIM_NSEC */
+
+/* Define to 1 on System V Release 4. */
+/* #undef SVR4 */
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#ifdef __MINGW32__
+#define TIME_WITH_SYS_TIME 1
+#endif
+
+/* Define to 1 for Encore UMAX. */
+/* #undef UMAX */
+
+/* Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h> instead of
+   <sys/cpustats.h>. */
+/* #undef UMAX4_3 */
+
+/* Version number of package */
+#define VERSION "%VERSION%"
+
+/* Define if using the dmalloc debugging malloc package */
+/* #undef WITH_DMALLOC */
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for 'stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Define to empty if 'const' does not conform to ANSI C. */
+/* #undef const */
+
+#include <sys/types.h>
+
+/* Define to 'int' if <sys/types.h> doesn't define. */
+#define gid_t int
+
+/* Define to 'int' if <sys/types.h> does not define. */
+/* GCC 4.x reportedly defines pid_t.  */
+#ifndef _PID_T_
+#ifdef _WIN64
+#define pid_t __int64
+#else
+#define pid_t int
+#endif
+#endif
+
+/* Define to 'int' if <sys/types.h> doesn't define. */
+#define uid_t int
+
+/* Define uintmax_t if not defined in <stdint.h> or <inttypes.h>. */
+#if !HAVE_STDINT_H && !HAVE_INTTYPES_H
+#define uintmax_t unsigned long
+#endif
+
+/* Define if you have <sys/wait.h> that is POSIX.1 compatible.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to the installation directory for locales.  */
+#define LOCALEDIR ""
+
+/*
+ * Refer to README.W32 for info on the following settings
+ */
+
+
+/*
+ * If you have a shell that does not grok 'sh -c quoted-command-line'
+ * correctly, you need this setting. Please see below for specific
+ * shell support.
+ */
+/*#define BATCH_MODE_ONLY_SHELL 1 */
+
+/*
+ * Define if you have the Cygnus "Cygwin" GNU Windows32 tool set.
+ * Do NOT define BATCH_MODE_ONLY_SHELL if you define HAVE_CYGWIN_SHELL
+ */
+/*#define HAVE_CYGWIN_SHELL 1 */
+
+/*
+ * Define if you have the MKS tool set or shell. Do NOT define
+ * BATCH_MODE_ONLY_SHELL if you define HAVE_MKS_SHELL
+ */
+/*#define HAVE_MKS_SHELL 1 */
+
+/*
+ * Enforce the mutual exclusivity restriction.
+ */
+#ifdef HAVE_MKS_SHELL
+#undef BATCH_MODE_ONLY_SHELL
+#endif
+
+#ifdef HAVE_CYGWIN_SHELL
+#undef BATCH_MODE_ONLY_SHELL
+#endif
diff --git a/src/kmk/config.h.darwin b/src/kmk/config.h.darwin
new file mode 100644
index 0000000..18e2818
--- /dev/null
+++ b/src/kmk/config.h.darwin
@@ -0,0 +1,491 @@
+/* config.h.  Generated from config.h.in by configure.  */
+/* config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to 1 if the `closedir' function returns void instead of `int'. */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if using `getloadavg.c'. */
+/* #undef C_GETLOADAVG */
+
+/* Define to 1 for DGUX with <sys/dg_sys_info.h>. */
+/* #undef DGUX */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 1
+
+/* Define to 1 if the `getloadavg' function needs to be run setuid or setgid.
+   */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+#define HAVE_ALLOCA_H 1
+
+/* Define to 1 if you have the `atexit' function. */
+#define HAVE_ATEXIT 1
+
+/* Use case insensitive file names */
+/* #undef HAVE_CASE_INSENSITIVE_FS */
+
+/* Define to 1 if you have the clock_gettime function. */
+#define HAVE_CLOCK_GETTIME 1
+
+/* Define to 1 if you have the declaration of `bsd_signal', and to 0 if you
+   don't. */
+#define HAVE_DECL_BSD_SIGNAL 1
+
+/* Define to 1 if you have the declaration of `dlerror', and to 0 if you
+   don't. */
+#define HAVE_DECL_DLERROR 1
+
+/* Define to 1 if you have the declaration of `dlopen', and to 0 if you don't.
+   */
+#define HAVE_DECL_DLOPEN 1
+
+/* Define to 1 if you have the declaration of `dlsym', and to 0 if you don't.
+   */
+#define HAVE_DECL_DLSYM 1
+
+/* Define to 1 if you have the declaration of `sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL_SYS_SIGLIST 1
+
+/* Define to 1 if you have the declaration of `_sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL__SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of `__sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL___SYS_SIGLIST 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Use platform specific coding */
+/* #undef HAVE_DOS_PATHS */
+
+/* Define to 1 if you have the `dup' function. */
+#define HAVE_DUP 1
+
+/* Define to 1 if you have the `dup2' function. */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the `fdopen' function. */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if you have the `fileno' function. */
+#define HAVE_FILENO 1
+
+/* Define to 1 if you have the `fork' function. */
+#define HAVE_FORK 1
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getgroups' function. */
+#define HAVE_GETGROUPS 1
+
+/* Define to 1 if you have the `gethostbyname' function. */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the `gethostname' function. */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the `getloadavg' function. */
+#define HAVE_GETLOADAVG 1
+
+/* Define to 1 if you have the `getrlimit' function. */
+#define HAVE_GETRLIMIT 1
+
+/* Define to 1 if you have a standard gettimeofday function */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `dgc' library (-ldgc). */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the `kstat' library (-lkstat). */
+/* #undef HAVE_LIBKSTAT */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you have the `lstat' function. */
+#define HAVE_LSTAT 1
+
+/* Define to 1 if you have the <mach/mach.h> header file. */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have the `mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nlist.h> header file. */
+/* #undef HAVE_NLIST_H */
+
+/* Define to 1 if you have the `pipe' function. */
+#define HAVE_PIPE 1
+
+#if 0 /* before 10.12.0 pselect is a useland implementation, which is insufficient for our purposes. */
+/* Define to 1 if you have the `pselect' function. */
+# define HAVE_PSELECT 1
+#else
+# undef HAVE_PSELECT
+#endif
+
+/* Define to 1 if you have the `pstat_getdynamic' function. */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the `readlink' function. */
+#define HAVE_READLINK 1
+
+/* Define to 1 if you have the `realpath' function. */
+#define HAVE_REALPATH 1
+
+/* Define to 1 if <signal.h> defines the SA_RESTART constant. */
+#define HAVE_SA_RESTART 1
+
+/* Define to 1 if you have the `setegid' function. */
+#define HAVE_SETEGID 1
+
+/* Define to 1 if you have the `seteuid' function. */
+#define HAVE_SETEUID 1
+
+/* Define to 1 if you have the `setlinebuf' function. */
+#define HAVE_SETLINEBUF 1
+
+/* Define to 1 if you have the `setlocale' function. */
+/* #undef HAVE_SETLOCALE */
+
+/* Define to 1 if you have the `setregid' function. */
+#define HAVE_SETREGID 1
+
+/* Define to 1 if you have the `setreuid' function. */
+#define HAVE_SETREUID 1
+
+/* Define to 1 if you have the `setrlimit' function. */
+#define HAVE_SETRLIMIT 1
+
+/* Define to 1 if you have the `setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+/* Define to 1 if you have the `sigaction' function. */
+#define HAVE_SIGACTION 1
+
+/* Define to 1 if you have the `sigsetmask' function. */
+#define HAVE_SIGSETMASK 1
+
+/* Define to 1 if you have the `socket' function. */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strcmpi' function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the `strcoll' function and it is properly defined.
+   */
+#define HAVE_STRCOLL 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the `stricmp' function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strncasecmp' function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the `strncmpi' function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the `strndup' function. */
+/* #define HAVE_STRNDUP 1 - not in snow leopard */
+
+/* Define to 1 if you have the `strnicmp' function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the `strsignal' function. */
+#define HAVE_STRSIGNAL 1
+
+/* Define to 1 if `n_un.n_name' is a member of `struct nlist'. */
+/* #undef HAVE_STRUCT_NLIST_N_UN_N_NAME */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/resource.h> header file. */
+#define HAVE_SYS_RESOURCE_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/timeb.h> header file. */
+#define HAVE_SYS_TIMEB_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+#define HAVE_SYS_WAIT_H 1
+
+/* Define to 1 if you have the `ttyname' function. */
+#define HAVE_TTYNAME 1
+
+/* Define to 1 if the system has the type `uintmax_t'. */
+#define HAVE_UINTMAX_T 1
+
+/* Define to 1 if you have the 'union wait' type in <sys/wait.h>. */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if the system has the type `unsigned long long int'. */
+#define HAVE_UNSIGNED_LONG_LONG_INT 1
+
+/* Define to 1 if you have the `vfork' function. */
+#define HAVE_VFORK 1
+
+/* Define to 1 if you have the <vfork.h> header file. */
+/* #undef HAVE_VFORK_H */
+
+/* Define to 1 if you have the `wait3' function. */
+#define HAVE_WAIT3 1
+
+/* Define to 1 if you have the `waitpid' function. */
+#define HAVE_WAITPID 1
+
+/* Define to 1 if `fork' works. */
+#define HAVE_WORKING_FORK 1
+
+/* Define to 1 if `vfork' works. */
+#define HAVE_WORKING_VFORK 1
+
+/* Build host information. */
+#define MAKE_HOST "x86_64-apple-darwin16.7.0"
+
+/* Define to 1 to enable job server support in GNU make. */
+#define MAKE_JOBSERVER 1
+
+/* Define to 1 to enable 'load' support in GNU make. */
+/* #undef MAKE_LOAD */
+
+/* Define to 1 to enable symbolic link timestamp checking. */
+#define MAKE_SYMLINKS 1
+
+/* Define to 1 if your `struct nlist' has an `n_un' member. Obsolete, depend
+   on `HAVE_STRUCT_NLIST_N_UN_N_NAME */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if struct nlist.n_name is a pointer rather than an array. */
+/* #undef NLIST_STRUCT */
+
+/* Name of package */
+#define PACKAGE "make"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bug-make@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "GNU make"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "GNU make 4.2.1"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "make"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL "http://www.gnu.org/software/make/"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "4.2.1"
+
+/* Define to the character that separates directories in PATH. */
+#define PATH_SEPARATOR_CHAR ':'
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the name of the SCCS 'get' command. */
+#define SCCS_GET "get"
+
+/* Define to 1 if the SCCS 'get' command understands the '-G<file>' option. */
+/* #undef SCCS_GET_MINUS_G */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at runtime.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if struct stat contains a nanoseconds field */
+#define ST_ATIM_NSEC st_atimespec.tv_nsec
+
+/* Define if struct stat contains a nanoseconds field */
+#define ST_MTIM_NSEC st_mtimespec.tv_nsec
+
+/* Define to 1 on System V Release 4. */
+/* #undef SVR4 */
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to 1 for Encore UMAX. */
+/* #undef UMAX */
+
+/* Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h> instead of
+   <sys/cpustats.h>. */
+/* #undef UMAX4_3 */
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# define _ALL_SOURCE 1
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# define _POSIX_PTHREAD_SEMANTICS 1
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# define _TANDEM_SOURCE 1
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# define __EXTENSIONS__ 1
+#endif
+
+
+/* Version number of package */
+#define VERSION "4.2.1"
+
+/* Use platform specific coding */
+/* #undef WINDOWS32 */
+
+/* Define if using the dmalloc debugging malloc package */
+/* #undef WITH_DMALLOC */
+
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef gid_t */
+
+/* Define to `long int' if <sys/types.h> does not define. */
+/* #undef off_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef pid_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef ssize_t */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef uid_t */
+
+/* Define to the widest unsigned integer type if <stdint.h> and <inttypes.h>
+   do not define. */
+/* #undef uintmax_t */
+
+/* Define as `fork' if `vfork' does not work. */
+/* #undef vfork */
+
+#include "inlined_memchr.h"
diff --git a/src/kmk/config.h.freebsd b/src/kmk/config.h.freebsd
new file mode 100644
index 0000000..8fa99cc
--- /dev/null
+++ b/src/kmk/config.h.freebsd
@@ -0,0 +1,433 @@
+/* config.h.  Generated by configure.  */
+/* config.h.in.  Generated from configure.in by autoheader.  */
+
+/* Define to 1 if the `closedir' function returns void instead of `int'. */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if using `getloadavg.c'. */
+/* #undef C_GETLOADAVG */
+
+/* Define to 1 for DGUX with <sys/dg_sys_info.h>. */
+/* #undef DGUX */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define to 1 if the `getloadavg' function needs to be run setuid or setgid.
+   */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define to 1 if your compiler conforms to the ANSI C standard. */
+#define HAVE_ANSI_COMPILER 1
+
+/* Define to 1 if you have the `atexit' function. */
+#define HAVE_ATEXIT 1
+
+/* Define to 1 if you have the `bsd_signal' function. */
+/* #undef HAVE_BSD_SIGNAL */
+
+/* Use case insensitive file names */
+/* #undef HAVE_CASE_INSENSITIVE_FS */
+
+/* Define to 1 if you have the clock_gettime function. */
+/* #undef HAVE_CLOCK_GETTIME */
+
+/* Define to 1 if you have the declaration of `sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL_SYS_SIGLIST 1
+
+/* Define to 1 if you have the declaration of `_sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL__SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of `__sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL___SYS_SIGLIST 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+/* #undef HAVE_DOPRNT */
+
+/* Use platform specific coding */
+/* #undef HAVE_DOS_PATHS */
+
+/* Define to 1 if you have the `dup2' function. */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the `fdopen' function. */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if you have the `fork' function. */
+#define HAVE_FORK 1
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getgroups' function. */
+#define HAVE_GETGROUPS 1
+
+/* Define to 1 if you have the `gethostbyname' function. */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the `gethostname' function. */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the `getloadavg' function. */
+#define HAVE_GETLOADAVG 1
+
+/* Define to 1 if you have the `getrlimit' function. */
+#define HAVE_GETRLIMIT 1
+
+/* Define to 1 if you have a standard gettimeofday function */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `dgc' library (-ldgc). */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the `kstat' library (-lkstat). */
+/* #undef HAVE_LIBKSTAT */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you have the `lstat' function. */
+#define HAVE_LSTAT 1
+
+/* Define to 1 if you have the <mach/mach.h> header file. */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have the `mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nlist.h> header file. */
+/* #undef HAVE_NLIST_H */
+
+/* Define to 1 if you have the `pipe' function. */
+#define HAVE_PIPE 1
+
+/* Define to 1 if you have the `pstat_getdynamic' function. */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the `readlink' function. */
+#define HAVE_READLINK 1
+
+/* Define to 1 if you have the `realpath' function. */
+#define HAVE_REALPATH 1
+
+/* Define to 1 if <signal.h> defines the SA_RESTART constant. */
+#define HAVE_SA_RESTART 1
+
+/* Define to 1 if you have the `setegid' function. */
+#define HAVE_SETEGID 1
+
+/* Define to 1 if you have the `seteuid' function. */
+#define HAVE_SETEUID 1
+
+/* Define to 1 if you have the `setlinebuf' function. */
+#define HAVE_SETLINEBUF 1
+
+/* Define to 1 if you have the `setlocale' function. */
+/* #undef HAVE_SETLOCALE */
+
+/* Define to 1 if you have the `setregid' function. */
+#define HAVE_SETREGID 1
+
+/* Define to 1 if you have the `setreuid' function. */
+#define HAVE_SETREUID 1
+
+/* Define to 1 if you have the `setrlimit' function. */
+#define HAVE_SETRLIMIT 1
+
+/* Define to 1 if you have the `setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+/* Define to 1 if you have the `sigaction' function. */
+#define HAVE_SIGACTION 1
+
+/* Define to 1 if you have the `sigsetmask' function. */
+#define HAVE_SIGSETMASK 1
+
+/* Define to 1 if you have the `socket' function. */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strcmpi' function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the `strcoll' function and it is properly defined.
+   */
+#define HAVE_STRCOLL 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the `stricmp' function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strsignal' function. */
+#define HAVE_STRSIGNAL 1
+
+/* Define to 1 if `n_un.n_name' is member of `struct nlist'. */
+/* #undef HAVE_STRUCT_NLIST_N_UN_N_NAME */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/resource.h> header file. */
+#define HAVE_SYS_RESOURCE_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/timeb.h> header file. */
+#define HAVE_SYS_TIMEB_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+#define HAVE_SYS_WAIT_H 1
+
+/* Define to 1 if you have the \`union wait' type in <sys/wait.h>. */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the <varargs.h> header file. */
+/* #undef HAVE_VARARGS_H */
+
+/* Define to 1 if you have the `vfork' function. */
+#define HAVE_VFORK 1
+
+/* Define to 1 if you have the <vfork.h> header file. */
+/* #undef HAVE_VFORK_H */
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the `wait3' function. */
+#define HAVE_WAIT3 1
+
+/* Define to 1 if you have the `waitpid' function. */
+#define HAVE_WAITPID 1
+
+/* Define to 1 if `fork' works. */
+#define HAVE_WORKING_FORK 1
+
+/* Define to 1 if `vfork' works. */
+#define HAVE_WORKING_VFORK 1
+
+/* Build host information. (not used by kmk) */
+#if defined(__X86__) || defined(__i386__) || defined(__I386__)
+#define MAKE_HOST "i386-unknown-freebsd6.2"
+#else
+#define MAKE_HOST "amd64-unknown-freebsd6.2"
+#endif
+
+/* Define to 1 to enable job server support in GNU make. */
+#define MAKE_JOBSERVER 1
+
+/* Define to 1 to enable symbolic link timestamp checking. */
+#define MAKE_SYMLINKS 1
+
+/* Define to 1 if your `struct nlist' has an `n_un' member. Obsolete, depend
+   on `HAVE_STRUCT_NLIST_N_UN_N_NAME */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if struct nlist.n_name is a pointer rather than an array. */
+/* #undef NLIST_STRUCT */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Name of package */
+#define PACKAGE "make"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bug-make@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "GNU make"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "GNU make 3.82"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "make"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "3.82"
+
+/* Define to the character that separates directories in PATH. */
+#define PATH_SEPARATOR_CHAR ':'
+
+/* Define to 1 if the C compiler supports function prototypes. */
+#define PROTOTYPES 1
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the name of the SCCS 'get' command. */
+#define SCCS_GET "get"
+
+/* Define to 1 if the SCCS 'get' command understands the '-G<file>' option. */
+/* #undef SCCS_GET_MINUS_G */
+
+/* Define to 1 if the `setvbuf' function takes the buffering type as its
+   second argument and the buffer pointer as the third, as on System V before
+   release 3. */
+/* #undef SETVBUF_REVERSED */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if struct stat contains a nanoseconds field */
+/* #undef ST_MTIM_NSEC */
+
+/* Define to 1 on System V Release 4. */
+/* #undef SVR4 */
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to 1 for Encore UMAX. */
+/* #undef UMAX */
+
+/* Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h> instead of
+   <sys/cpustats.h>. */
+/* #undef UMAX4_3 */
+
+/* Version number of package */
+#define VERSION "3.82"
+
+/* Use platform specific coding */
+/* #undef WINDOWS32 */
+
+/* Define if using the dmalloc debugging malloc package */
+/* #undef WITH_DMALLOC */
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Define like PROTOTYPES; this can be used by system headers. */
+#define __PROTOTYPES 1
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef gid_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef pid_t */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef uid_t */
+
+/* Define uintmax_t if not defined in <stdint.h> or <inttypes.h>. */
+/* #undef uintmax_t */
+
+/* Define as `fork' if `vfork' does not work. */
+/* #undef vfork */
+
+#include "inlined_memchr.h"
+
diff --git a/src/kmk/config.h.haiku b/src/kmk/config.h.haiku
new file mode 100644
index 0000000..3580374
--- /dev/null
+++ b/src/kmk/config.h.haiku
@@ -0,0 +1,459 @@
+/* config.h.  Generated from config.h.in by configure.  */
+/* config.h.in.  Generated from configure.in by autoheader.  */
+
+/* Define to 1 if the `closedir' function returns void instead of `int'. */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if using `getloadavg.c'. */
+#define C_GETLOADAVG 1
+
+/* Define to 1 for DGUX with <sys/dg_sys_info.h>. */
+/* #undef DGUX */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 1
+
+/* Define to 1 if the `getloadavg' function needs to be run setuid or setgid.
+   */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+#define HAVE_ALLOCA_H 1
+
+/* Define to 1 if your compiler conforms to the ANSI C standard. */
+#define HAVE_ANSI_COMPILER 1
+
+/* Define to 1 if you have the `atexit' function. */
+#define HAVE_ATEXIT 1
+
+/* Use case insensitive file names */
+/* #undef HAVE_CASE_INSENSITIVE_FS */
+
+/* Define to 1 if you have the clock_gettime function. */
+#define HAVE_CLOCK_GETTIME 1
+
+/* Define to 1 if you have the declaration of `bsd_signal', and to 0 if you
+   don't. */
+#define HAVE_DECL_BSD_SIGNAL 0
+
+/* Define to 1 if you have the declaration of `sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL_SYS_SIGLIST 1
+
+/* Define to 1 if you have the declaration of `_sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL__SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of `__sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL___SYS_SIGLIST 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+/* #undef HAVE_DOPRNT */
+
+/* Use platform specific coding */
+/* #undef HAVE_DOS_PATHS */
+
+/* Define to 1 if you have the `dup2' function. */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the `fdopen' function. */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if you have the `fileno' function. */
+#define HAVE_FILENO 1
+
+/* Define to 1 if you have the `fork' function. */
+#define HAVE_FORK 1
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getgroups' function. */
+#define HAVE_GETGROUPS 1
+
+/* Define to 1 if you have the `gethostbyname' function. */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the `gethostname' function. */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the `getloadavg' function. */
+/* #undef HAVE_GETLOADAVG */
+
+/* Define to 1 if you have the `getrlimit' function. */
+#define HAVE_GETRLIMIT 1
+
+/* Define to 1 if you have a standard gettimeofday function */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `dgc' library (-ldgc). */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the `kstat' library (-lkstat). */
+/* #undef HAVE_LIBKSTAT */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you have the `lstat' function. */
+#define HAVE_LSTAT 1
+
+/* Define to 1 if you have the <mach/mach.h> header file. */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have the `mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nlist.h> header file. */
+/* #undef HAVE_NLIST_H */
+
+/* Define to 1 if you have the `pipe' function. */
+#define HAVE_PIPE 1
+
+/* Define to 1 if you have the `pstat_getdynamic' function. */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the `readlink' function. */
+#define HAVE_READLINK 1
+
+/* Define to 1 if you have the `realpath' function. */
+#define HAVE_REALPATH 1
+
+/* Define to 1 if <signal.h> defines the SA_RESTART constant. */
+#define HAVE_SA_RESTART 1
+
+/* Define to 1 if you have the `setegid' function. */
+#define HAVE_SETEGID 1
+
+/* Define to 1 if you have the `seteuid' function. */
+#define HAVE_SETEUID 1
+
+/* Define to 1 if you have the `setlinebuf' function. */
+#define HAVE_SETLINEBUF 1
+
+/* Define to 1 if you have the `setlocale' function. */
+#define HAVE_SETLOCALE 1
+
+/* Define to 1 if you have the `setregid' function. */
+#define HAVE_SETREGID 1
+
+/* Define to 1 if you have the `setreuid' function. */
+#define HAVE_SETREUID 1
+
+/* Define to 1 if you have the `setrlimit' function. */
+#define HAVE_SETRLIMIT 1
+
+/* Define to 1 if you have the `setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+/* Define to 1 if you have the `sigaction' function. */
+#define HAVE_SIGACTION 1
+
+/* Define to 1 if you have the `sigsetmask' function. */
+/* #undef HAVE_SIGSETMASK */
+
+/* Define to 1 if you have the `socket' function. */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strcmpi' function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the `strcoll' function and it is properly defined.
+   */
+#define HAVE_STRCOLL 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the `stricmp' function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strncasecmp' function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the `strncmpi' function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the `strndup' function. */
+#define HAVE_STRNDUP 1
+
+/* Define to 1 if you have the `strnicmp' function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the `strsignal' function. */
+#define HAVE_STRSIGNAL 1
+
+/* Define to 1 if `n_un.n_name' is a member of `struct nlist'. */
+/* #undef HAVE_STRUCT_NLIST_N_UN_N_NAME */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/resource.h> header file. */
+#define HAVE_SYS_RESOURCE_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/timeb.h> header file. */
+#define HAVE_SYS_TIMEB_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+#define HAVE_SYS_WAIT_H 1
+
+/* Define to 1 if you have the \`union wait' type in <sys/wait.h>. */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the <varargs.h> header file. */
+/* #undef HAVE_VARARGS_H */
+
+/* Define to 1 if you have the `vfork' function. */
+#define HAVE_VFORK 1
+
+/* Define to 1 if you have the <vfork.h> header file. */
+/* #undef HAVE_VFORK_H */
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the `wait3' function. */
+/* #undef HAVE_WAIT3 */
+
+/* Define to 1 if you have the `waitpid' function. */
+#define HAVE_WAITPID 1
+
+/* Define to 1 if `fork' works. */
+#define HAVE_WORKING_FORK 1
+
+/* Define to 1 if `vfork' works. */
+#define HAVE_WORKING_VFORK 1
+
+/* Build host information. (not used by kmk) */
+#define MAKE_HOST "i586-pc-haiku"
+
+/* Define to 1 to enable job server support in GNU make. */
+#define MAKE_JOBSERVER 1
+
+/* Define to 1 to enable symbolic link timestamp checking. */
+#define MAKE_SYMLINKS 1
+
+/* Define to 1 if your `struct nlist' has an `n_un' member. Obsolete, depend
+   on `HAVE_STRUCT_NLIST_N_UN_N_NAME */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if struct nlist.n_name is a pointer rather than an array. */
+/* #undef NLIST_STRUCT */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Name of package */
+#define PACKAGE "make"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bug-make@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "GNU make"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "GNU make 3.82"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "make"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL "http://www.gnu.org/software/make/"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "3.82"
+
+/* Define to the character that separates directories in PATH. */
+#define PATH_SEPARATOR_CHAR ':'
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the name of the SCCS 'get' command. */
+#define SCCS_GET "get"
+
+/* Define to 1 if the SCCS 'get' command understands the '-G<file>' option. */
+/* #undef SCCS_GET_MINUS_G */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at runtime.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if struct stat contains a nanoseconds field */
+#define ST_MTIM_NSEC tv_nsec
+
+/* Define to 1 on System V Release 4. */
+/* #undef SVR4 */
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to 1 for Encore UMAX. */
+/* #undef UMAX */
+
+/* Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h> instead of
+   <sys/cpustats.h>. */
+/* #undef UMAX4_3 */
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# define _ALL_SOURCE 1
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# define _POSIX_PTHREAD_SEMANTICS 1
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# define _TANDEM_SOURCE 1
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# define __EXTENSIONS__ 1
+#endif
+
+
+/* Version number of package */
+#define VERSION "3.82"
+
+/* Use platform specific coding */
+/* #undef WINDOWS32 */
+
+/* Define if using the dmalloc debugging malloc package */
+/* #undef WITH_DMALLOC */
+
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef gid_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef pid_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef uid_t */
+
+/* Define uintmax_t if not defined in <stdint.h> or <inttypes.h>. */
+/* #undef uintmax_t */
+
+/* Define as `fork' if `vfork' does not work. */
+/* #undef vfork */
+
+#include "inlined_memchr.h"
diff --git a/src/kmk/config.h.linux b/src/kmk/config.h.linux
new file mode 100644
index 0000000..99c5fa4
--- /dev/null
+++ b/src/kmk/config.h.linux
@@ -0,0 +1,498 @@
+/* config.h.  Generated from config.h.in by configure.  */
+/* config.h.in.  Generated from configure.in by autoheader.  */
+
+/*
+ * bird: Move up this bunch so we can include features.h early.
+ */
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# define _ALL_SOURCE 1
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# define _POSIX_PTHREAD_SEMANTICS 1
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# define _TANDEM_SOURCE 1
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# define __EXTENSIONS__ 1
+#endif
+
+#include <features.h> /* bird */
+
+
+/* Define to 1 if the `closedir' function returns void instead of `int'. */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if using `getloadavg.c'. */
+/* #undef C_GETLOADAVG */
+
+/* Define to 1 for DGUX with <sys/dg_sys_info.h>. */
+/* #undef DGUX */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 1
+
+/* Define to 1 if the `getloadavg' function needs to be run setuid or setgid.
+   */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+#define HAVE_ALLOCA_H 1
+
+/* Define to 1 if you have the `atexit' function. */
+#define HAVE_ATEXIT 1
+
+/* Use case insensitive file names */
+/* #undef HAVE_CASE_INSENSITIVE_FS */
+
+/* Define to 1 if you have the clock_gettime function. */
+#define HAVE_CLOCK_GETTIME 1
+
+/* Define to 1 if you have the declaration of `bsd_signal', and to 0 if you
+   don't. */
+/* #define HAVE_DECL_BSD_SIGNAL 1 */
+
+/* Define to 1 if you have the declaration of `dlerror', and to 0 if you
+   don't. */
+#define HAVE_DECL_DLERROR 1
+
+/* Define to 1 if you have the declaration of `dlopen', and to 0 if you don't.
+   */
+#define HAVE_DECL_DLOPEN 1
+
+/* Define to 1 if you have the declaration of `dlsym', and to 0 if you don't.
+   */
+#define HAVE_DECL_DLSYM 1
+
+/* Define to 1 if you have the declaration of `sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL_SYS_SIGLIST 1
+
+/* Define to 1 if you have the declaration of `_sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL__SYS_SIGLIST 1
+
+/* Define to 1 if you have the declaration of `__sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL___SYS_SIGLIST 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Use platform specific coding */
+/* #undef HAVE_DOS_PATHS */
+
+/* Define to 1 if you have the `dup' function. */
+#define HAVE_DUP 1
+
+/* Define to 1 if you have the `dup2' function. */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the `fdopen' function. */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if you have the `fileno' function. */
+#define HAVE_FILENO 1
+
+/* Define to 1 if you have the `fork' function. */
+#define HAVE_FORK 1
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getgroups' function. */
+#define HAVE_GETGROUPS 1
+
+/* Define to 1 if you have the `gethostbyname' function. */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the `gethostname' function. */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the `getloadavg' function. */
+#define HAVE_GETLOADAVG 1
+
+/* Define to 1 if you have the `getrlimit' function. */
+#define HAVE_GETRLIMIT 1
+
+/* Define to 1 if you have a standard gettimeofday function */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `dgc' library (-ldgc). */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the `kstat' library (-lkstat). */
+/* #undef HAVE_LIBKSTAT */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you have the `lstat' function. */
+#define HAVE_LSTAT 1
+
+/* Define to 1 if you have the <mach/mach.h> header file. */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have the `mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nlist.h> header file. */
+/* #undef HAVE_NLIST_H */
+
+/* Define to 1 if you have the `pipe' function. */
+#define HAVE_PIPE 1
+
+/* Define to 1 if you have the `pselect' function. */
+#define HAVE_PSELECT 1
+
+/* Define to 1 if you have the `pstat_getdynamic' function. */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the `readlink' function. */
+#define HAVE_READLINK 1
+
+/* Define to 1 if you have the `realpath' function. */
+#define HAVE_REALPATH 1
+
+/* Define to 1 if <signal.h> defines the SA_RESTART constant. */
+#define HAVE_SA_RESTART 1
+
+/* Define to 1 if you have the `setegid' function. */
+#define HAVE_SETEGID 1
+
+/* Define to 1 if you have the `seteuid' function. */
+#define HAVE_SETEUID 1
+
+/* Define to 1 if you have the `setlinebuf' function. */
+#define HAVE_SETLINEBUF 1
+
+/* Define to 1 if you have the `setlocale' function. */
+/* #undef HAVE_SETLOCALE */
+
+/* Define to 1 if you have the `setregid' function. */
+#define HAVE_SETREGID 1
+
+/* Define to 1 if you have the `setreuid' function. */
+#define HAVE_SETREUID 1
+
+/* Define to 1 if you have the `setrlimit' function. */
+#define HAVE_SETRLIMIT 1
+
+/* Define to 1 if you have the `setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+/* Define to 1 if you have the `sigaction' function. */
+#define HAVE_SIGACTION 1
+
+/* Define to 1 if you have the `sigsetmask' function. */
+#define HAVE_SIGSETMASK 1
+
+/* Define to 1 if you have the `socket' function. */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strcmpi' function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the `strcoll' function and it is properly defined.
+   */
+#define HAVE_STRCOLL 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the `stricmp' function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strncasecmp' function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the `strncmpi' function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the `strndup' function. */
+#define HAVE_STRNDUP 1
+
+/* Define to 1 if you have the `strnicmp' function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the `strsignal' function. */
+#define HAVE_STRSIGNAL 1
+
+/* Define to 1 if `n_un.n_name' is a member of `struct nlist'. */
+/* #undef HAVE_STRUCT_NLIST_N_UN_N_NAME */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/resource.h> header file. */
+#define HAVE_SYS_RESOURCE_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/timeb.h> header file. */
+#define HAVE_SYS_TIMEB_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+#define HAVE_SYS_WAIT_H 1
+
+/* Define to 1 if you have the `ttyname' function. */
+#define HAVE_TTYNAME 1
+
+/* Define to 1 if the system has the type `uintmax_t'. */
+#define HAVE_UINTMAX_T 1
+
+/* Define to 1 if you have the 'union wait' type in <sys/wait.h>. */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if the system has the type `unsigned long long int'. */
+#define HAVE_UNSIGNED_LONG_LONG_INT 1
+
+/* Define to 1 if you have the `vfork' function. */
+#define HAVE_VFORK 1
+
+/* Define to 1 if you have the <vfork.h> header file. */
+/* #undef HAVE_VFORK_H */
+
+/* Define to 1 if you have the `wait3' function. */
+#define HAVE_WAIT3 1
+
+/* Define to 1 if you have the `waitpid' function. */
+#define HAVE_WAITPID 1
+
+/* Define to 1 if `fork' works. */
+#define HAVE_WORKING_FORK 1
+
+/* Define to 1 if `vfork' works. */
+#define HAVE_WORKING_VFORK 1
+
+/* Build host information. (not used by kmk) */
+#define MAKE_HOST "i686-pc-linux-gnu"
+
+/* Define to 1 to enable job server support in GNU make. */
+#define MAKE_JOBSERVER 1
+
+/* Define to 1 to enable 'load' support in GNU make. */
+/* #undef MAKE_LOAD */
+
+/* Define to 1 to enable symbolic link timestamp checking. */
+#define MAKE_SYMLINKS 1
+
+/* Define to 1 if your `struct nlist' has an `n_un' member. Obsolete, depend
+   on `HAVE_STRUCT_NLIST_N_UN_N_NAME */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if struct nlist.n_name is a pointer rather than an array. */
+/* #undef NLIST_STRUCT */
+
+/* Name of package */
+#define PACKAGE "make"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bug-make@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "GNU make"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "GNU make 4.2.1"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "make"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL "http://kbuild.org/"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "4.2.1"
+
+/* Define to the character that separates directories in PATH. */
+#define PATH_SEPARATOR_CHAR ':'
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the name of the SCCS 'get' command. */
+#define SCCS_GET "get"
+
+/* Define to 1 if the SCCS 'get' command understands the '-G<file>' option. */
+/* #undef SCCS_GET_MINUS_G */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at runtime.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if struct stat contains a nanoseconds field */
+#if defined(__USE_XOPEN2K8) || defined(__USE_MISC)
+# define ST_MTIM_NSEC st_mtim.tv_nsec
+# define ST_ATIM_NSEC st_atim.tv_nsec
+#else
+# define ST_MTIM_NSEC st_mtimensec
+# define ST_ATIM_NSEC st_atimensec
+#endif
+
+/* Define to 1 on System V Release 4. */
+/* #undef SVR4 */
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to 1 for Encore UMAX. */
+/* #undef UMAX */
+
+/* Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h> instead of
+   <sys/cpustats.h>. */
+/* #undef UMAX4_3 */
+
+
+/* Version number of package */
+#define VERSION "4.2.1"
+
+/* Use platform specific coding */
+/* #undef WINDOWS32 */
+
+/* Define if using the dmalloc debugging malloc package */
+/* #undef WITH_DMALLOC */
+
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#define _FILE_OFFSET_BITS 64
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef gid_t */
+
+/* Define to `long int' if <sys/types.h> does not define. */
+/* #undef off_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef pid_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef ssize_t */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef uid_t */
+
+/* Define to the widest unsigned integer type if <stdint.h> and <inttypes.h>
+   do not define. */
+/* #undef uintmax_t */
+
+/* Define as `fork' if `vfork' does not work. */
+/* #undef vfork */
+
+#include "inlined_memchr.h"
+
diff --git a/src/kmk/config.h.netbsd b/src/kmk/config.h.netbsd
new file mode 100755
index 0000000..77c43d1
--- /dev/null
+++ b/src/kmk/config.h.netbsd
@@ -0,0 +1,459 @@
+/* config.h.  Generated from config.h.in by configure.  */
+/* config.h.in.  Generated from configure.in by autoheader.  */
+
+/* Define to 1 if the `closedir' function returns void instead of `int'. */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if using `getloadavg.c'. */
+/* #undef C_GETLOADAVG */
+
+/* Define to 1 for DGUX with <sys/dg_sys_info.h>. */
+/* #undef DGUX */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define to 1 if the `getloadavg' function needs to be run setuid or setgid.
+   */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define to 1 if your compiler conforms to the ANSI C standard. */
+#define HAVE_ANSI_COMPILER 1
+
+/* Define to 1 if you have the `atexit' function. */
+#define HAVE_ATEXIT 1
+
+/* Use case insensitive file names */
+/* #undef HAVE_CASE_INSENSITIVE_FS */
+
+/* Define to 1 if you have the clock_gettime function. */
+/* #undef HAVE_CLOCK_GETTIME */
+
+/* Define to 1 if you have the declaration of `bsd_signal', and to 0 if you
+   don't. */
+#define HAVE_DECL_BSD_SIGNAL 0
+
+/* Define to 1 if you have the declaration of `sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL_SYS_SIGLIST 1
+
+/* Define to 1 if you have the declaration of `_sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL__SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of `__sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL___SYS_SIGLIST 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+/* #undef HAVE_DOPRNT */
+
+/* Use platform specific coding */
+/* #undef HAVE_DOS_PATHS */
+
+/* Define to 1 if you have the `dup2' function. */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the `fdopen' function. */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if you have the `fileno' function. */
+#define HAVE_FILENO 1
+
+/* Define to 1 if you have the `fork' function. */
+#define HAVE_FORK 1
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getgroups' function. */
+#define HAVE_GETGROUPS 1
+
+/* Define to 1 if you have the `gethostbyname' function. */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the `gethostname' function. */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the `getloadavg' function. */
+#define HAVE_GETLOADAVG 1
+
+/* Define to 1 if you have the `getrlimit' function. */
+#define HAVE_GETRLIMIT 1
+
+/* Define to 1 if you have a standard gettimeofday function */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `dgc' library (-ldgc). */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the `kstat' library (-lkstat). */
+/* #undef HAVE_LIBKSTAT */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you have the `lstat' function. */
+#define HAVE_LSTAT 1
+
+/* Define to 1 if you have the <mach/mach.h> header file. */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have the `mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nlist.h> header file. */
+/* #undef HAVE_NLIST_H */
+
+/* Define to 1 if you have the `pipe' function. */
+#define HAVE_PIPE 1
+
+/* Define to 1 if you have the `pstat_getdynamic' function. */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the `readlink' function. */
+#define HAVE_READLINK 1
+
+/* Define to 1 if you have the `realpath' function. */
+#define HAVE_REALPATH 1
+
+/* Define to 1 if <signal.h> defines the SA_RESTART constant. */
+#define HAVE_SA_RESTART 1
+
+/* Define to 1 if you have the `setegid' function. */
+#define HAVE_SETEGID 1
+
+/* Define to 1 if you have the `seteuid' function. */
+#define HAVE_SETEUID 1
+
+/* Define to 1 if you have the `setlinebuf' function. */
+#define HAVE_SETLINEBUF 1
+
+/* Define to 1 if you have the `setlocale' function. */
+/* #undef HAVE_SETLOCALE */
+
+/* Define to 1 if you have the `setregid' function. */
+#define HAVE_SETREGID 1
+
+/* Define to 1 if you have the `setreuid' function. */
+#define HAVE_SETREUID 1
+
+/* Define to 1 if you have the `setrlimit' function. */
+#define HAVE_SETRLIMIT 1
+
+/* Define to 1 if you have the `setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+/* Define to 1 if you have the `sigaction' function. */
+#define HAVE_SIGACTION 1
+
+/* Define to 1 if you have the `sigsetmask' function. */
+#define HAVE_SIGSETMASK 1
+
+/* Define to 1 if you have the `socket' function. */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strcmpi' function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the `strcoll' function and it is properly defined.
+   */
+#define HAVE_STRCOLL 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the `stricmp' function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strncasecmp' function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the `strncmpi' function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the `strndup' function. */
+#define HAVE_STRNDUP 1
+
+/* Define to 1 if you have the `strnicmp' function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the `strsignal' function. */
+#define HAVE_STRSIGNAL 1
+
+/* Define to 1 if `n_un.n_name' is a member of `struct nlist'. */
+/* #undef HAVE_STRUCT_NLIST_N_UN_N_NAME */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/resource.h> header file. */
+#define HAVE_SYS_RESOURCE_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/timeb.h> header file. */
+#define HAVE_SYS_TIMEB_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+#define HAVE_SYS_WAIT_H 1
+
+/* Define to 1 if you have the \`union wait' type in <sys/wait.h>. */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the <varargs.h> header file. */
+/* #undef HAVE_VARARGS_H */
+
+/* Define to 1 if you have the `vfork' function. */
+#define HAVE_VFORK 1
+
+/* Define to 1 if you have the <vfork.h> header file. */
+/* #undef HAVE_VFORK_H */
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the `wait3' function. */
+#define HAVE_WAIT3 1
+
+/* Define to 1 if you have the `waitpid' function. */
+#define HAVE_WAITPID 1
+
+/* Define to 1 if `fork' works. */
+#define HAVE_WORKING_FORK 1
+
+/* Define to 1 if `vfork' works. */
+#define HAVE_WORKING_VFORK 1
+
+/* Build host information. (not used by kmk) */
+#define MAKE_HOST "i386-unknown-netbsdelf5.1."
+
+/* Define to 1 to enable job server support in GNU make. */
+#define MAKE_JOBSERVER 1
+
+/* Define to 1 to enable symbolic link timestamp checking. */
+#define MAKE_SYMLINKS 1
+
+/* Define to 1 if your `struct nlist' has an `n_un' member. Obsolete, depend
+   on `HAVE_STRUCT_NLIST_N_UN_N_NAME */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if struct nlist.n_name is a pointer rather than an array. */
+/* #undef NLIST_STRUCT */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Name of package */
+#define PACKAGE "make"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bug-make@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "GNU make"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "GNU make 3.82"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "make"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL "http://www.gnu.org/software/make/"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "3.82"
+
+/* Define to the character that separates directories in PATH. */
+#define PATH_SEPARATOR_CHAR ':'
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the name of the SCCS 'get' command. */
+#define SCCS_GET "get"
+
+/* Define to 1 if the SCCS 'get' command understands the '-G<file>' option. */
+/* #undef SCCS_GET_MINUS_G */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at runtime.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if struct stat contains a nanoseconds field */
+/* #undef ST_MTIM_NSEC */
+
+/* Define to 1 on System V Release 4. */
+/* #undef SVR4 */
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to 1 for Encore UMAX. */
+/* #undef UMAX */
+
+/* Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h> instead of
+   <sys/cpustats.h>. */
+/* #undef UMAX4_3 */
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# define _ALL_SOURCE 1
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# define _POSIX_PTHREAD_SEMANTICS 1
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# define _TANDEM_SOURCE 1
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# define __EXTENSIONS__ 1
+#endif
+
+
+/* Version number of package */
+#define VERSION "3.82"
+
+/* Use platform specific coding */
+/* #undef WINDOWS32 */
+
+/* Define if using the dmalloc debugging malloc package */
+/* #undef WITH_DMALLOC */
+
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef gid_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef pid_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef uid_t */
+
+/* Define uintmax_t if not defined in <stdint.h> or <inttypes.h>. */
+/* #undef uintmax_t */
+
+/* Define as `fork' if `vfork' does not work. */
+/* #undef vfork */
+
+#include "inlined_memchr.h"
diff --git a/src/kmk/config.h.os2 b/src/kmk/config.h.os2
new file mode 100644
index 0000000..32b919c
--- /dev/null
+++ b/src/kmk/config.h.os2
@@ -0,0 +1,476 @@
+/* config.h.  Generated by configure.  */
+/* config.h.in.  Generated from configure.in by autoheader.  */
+
+/* Define to 1 if the `closedir' function returns void instead of `int'. */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if using `getloadavg.c'. */
+/* #undef C_GETLOADAVG */
+
+/* Define to 1 for DGUX with <sys/dg_sys_info.h>. */
+/* #undef DGUX */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+#define ENABLE_NLS 1
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define to 1 if the `getloadavg' function needs to be run setuid or setgid.
+   */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+#define HAVE_ALLOCA_H 1
+
+/* Define if your compiler conforms to the ANSI C standard. */
+#define HAVE_ANSI_COMPILER 1
+
+/* Define to 1 if you have the `atexit' function. */
+#define HAVE_ATEXIT 1
+
+/* Use case insensitive file names */
+/* #undef HAVE_CASE_INSENSITIVE_FS */
+
+/* Define to 1 if you have the declaration of `bsd_signal', and to 0 if you
+   don't. */
+#define HAVE_DECL_BSD_SIGNAL 1
+
+/* Define if you have the clock_gettime function. */
+/* #undef HAVE_CLOCK_GETTIME */
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+#define HAVE_DCGETTEXT 1
+
+/* Define to 1 if you have the declaration of `sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL_SYS_SIGLIST 1
+
+/* Define to 1 if you have the declaration of `_sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL__SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of `__sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL___SYS_SIGLIST 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+/* #undef HAVE_DOPRNT */
+
+/* Use platform specific coding */
+#define HAVE_DOS_PATHS 1
+
+/* Define to 1 if you have the `dup2' function. */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the `fdopen' function. */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if you have the `fork' function. */
+#define HAVE_FORK 1
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getgroups' function. */
+#define HAVE_GETGROUPS 1
+
+/* Define to 1 if you have the `gethostbyname' function. */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the `gethostname' function. */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the `getloadavg' function. */
+#define HAVE_GETLOADAVG 1
+
+/* Define to 1 if you have the `getrlimit' function. */
+#define HAVE_GETRLIMIT 1
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+#define HAVE_GETTEXT 1
+
+/* Define if you have a standard gettimeofday function */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define if you have the iconv() function. */
+/* #undef HAVE_ICONV */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `dgc' library (-ldgc). */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the `kstat' library (-lkstat). */
+/* #undef HAVE_LIBKSTAT */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you have the `lstat' function. */
+#define HAVE_LSTAT 1
+
+/* Define to 1 if you have the <mach/mach.h> header file. */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the `memcpy' function. */
+#define HAVE_MEMCPY 1
+
+/* Define to 1 if you have the `memmove' function. */
+#define HAVE_MEMMOVE 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have the `mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nlist.h> header file. */
+/* #undef HAVE_NLIST_H */
+
+/* Define to 1 if you have the `pipe' function. */
+#define HAVE_PIPE 1
+
+/* Define to 1 if you have the `pstat_getdynamic' function. */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the `readlink' function. */
+#define HAVE_READLINK 1
+
+/* Define to 1 if you have the `realpath' function. */
+#define HAVE_REALPATH 1
+
+/* Define if <signal.h> defines the SA_RESTART constant. */
+#define HAVE_SA_RESTART 1
+
+/* Define to 1 if you have the `setegid' function. */
+#define HAVE_SETEGID 1
+
+/* Define to 1 if you have the `seteuid' function. */
+#define HAVE_SETEUID 1
+
+/* Define to 1 if you have the `setlinebuf' function. */
+#define HAVE_SETLINEBUF 1
+
+/* Define to 1 if you have the `setlocale' function. */
+/* #undef HAVE_SETLOCALE */
+
+/* Define to 1 if you have the `setregid' function. */
+#define HAVE_SETREGID 1
+
+/* Define to 1 if you have the `setreuid' function. */
+#define HAVE_SETREUID 1
+
+/* Define to 1 if you have the `setrlimit' function. */
+#define HAVE_SETRLIMIT 1
+
+/* Define to 1 if you have the `setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+/* Define to 1 if you have the `sigaction' function. */
+#define HAVE_SIGACTION 1
+
+/* Define to 1 if you have the `sigsetmask' function. */
+#define HAVE_SIGSETMASK 1
+
+/* Define to 1 if you have the `socket' function. */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `strcasecmp' function. */
+/* #undef HAVE_STRCASECMP */
+
+/* Define to 1 if you have the `strchr' function. */
+#define HAVE_STRCHR 1
+
+/* Define to 1 if you have the `strcoll' function and it is properly defined.
+   */
+#define HAVE_STRCOLL 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strncasecmp' function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the `strncmpi' function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the `strsignal' function. */
+#define HAVE_STRSIGNAL 1
+
+/* Define to 1 if you have the `strndup' function. */
+#define HAVE_STRNDUP 1
+
+/* Define to 1 if you have the `strnicmp' function. */
+#define HAVE_STRNICMP 1
+		
+/* Define to 1 if `n_un.n_name' is member of `struct nlist'. */
+/* #undef HAVE_STRUCT_NLIST_N_UN_N_NAME */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/resource.h> header file. */
+#define HAVE_SYS_RESOURCE_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/timeb.h> header file. */
+#define HAVE_SYS_TIMEB_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+#define HAVE_SYS_WAIT_H 1
+
+/* Define this if you have the \`union wait' type in <sys/wait.h>. */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the <varargs.h> header file. */
+/* #undef HAVE_VARARGS_H */
+
+/* Define to 1 if you have the `vfork' function. */
+/* #undef HAVE_VFORK */
+
+/* Define to 1 if you have the <vfork.h> header file. */
+/* #undef HAVE_VFORK_H */
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the `wait3' function. */
+#define HAVE_WAIT3 1
+
+/* Define to 1 if you have the `waitpid' function. */
+#define HAVE_WAITPID 1
+
+/* Define to 1 if `fork' works. */
+#define HAVE_WORKING_FORK 1
+
+/* Define to 1 if `vfork' works. */
+/* #undef HAVE_WORKING_VFORK */
+
+/* Build host information. (not used by kmk) */
+#define MAKE_HOST "i386-pc-os2-emx"
+
+/* Define this to enable job server support in GNU make. */
+#define MAKE_JOBSERVER 1
+
+/* Define this to enable symbolic link timestamp checking. */
+#define MAKE_SYMLINKS 1
+
+/* Define to 1 if your `struct nlist' has an `n_un' member. Obsolete, depend
+   on `HAVE_STRUCT_NLIST_N_UN_N_NAME */
+/* #undef NLIST_NAME_UNION */
+
+/* Define if struct nlist.n_name is a pointer rather than an array. */
+/* #undef NLIST_STRUCT */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Name of package */
+#define PACKAGE "make"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bug-make@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "GNU make"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "GNU make 3.82"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "make"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "3.82"
+
+/* Define to 1 if the C compiler supports function prototypes. */
+#define PROTOTYPES 1
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the name of the SCCS 'get' command. */
+#define SCCS_GET "get"
+
+/* Define this if the SCCS 'get' command understands the '-G<file>' option. */
+/* #undef SCCS_GET_MINUS_G */
+
+/* Define to 1 if the `setvbuf' function takes the buffering type as its
+   second argument and the buffer pointer as the third, as on System V before
+   release 3. */
+/* #undef SETVBUF_REVERSED */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if struct stat contains a nanoseconds field */
+/* #undef ST_MTIM_NSEC */
+
+/* Define to 1 on System V Release 4. */
+/* #undef SVR4 */
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to 1 for Encore UMAX. */
+/* #undef UMAX */
+
+/* Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h> instead of
+   <sys/cpustats.h>. */
+/* #undef UMAX4_3 */
+
+/* Version number of package */
+#define VERSION "3.81"
+
+/* Use platform specific coding */
+/* #undef WINDOWS32 */
+
+/* Define if using the dmalloc debugging malloc package */
+/* #undef WITH_DMALLOC */
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Define like PROTOTYPES; this can be used by system headers. */
+#define __PROTOTYPES 1
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef gid_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef pid_t */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef uid_t */
+
+/* Define uintmax_t if not defined in <stdint.h> or <inttypes.h>. */
+/* #undef uintmax_t */
+
+/* Define as `fork' if `vfork' does not work. */
+#define vfork fork
+
+/*
+ * Modifications:
+ */
+
+/* Define to the installation directory for locales.  */
+#define LOCALEDIR ""
+
+/*
+ * If you have a shell that does not grok 'sh -c quoted-command-line'
+ * correctly, you need this setting. Please see below for specific
+ * shell support.
+ */
+#define BATCH_MODE_ONLY_SHELL 1
+
+#define _DIRENT_HAVE_D_NAMLEN 1
+#define _DIRENT_HAVE_D_TYPE   1
+
+#define INCLUDEDIR "."
+#define LIBDIR "."
+
+#include "inlined_memchr.h"
+
diff --git a/src/kmk/config.h.solaris b/src/kmk/config.h.solaris
new file mode 100644
index 0000000..adeaca3
--- /dev/null
+++ b/src/kmk/config.h.solaris
@@ -0,0 +1,443 @@
+/* config.h.  Generated from config.h.in by configure.  */
+/* config.h.in.  Generated from configure.in by autoheader.  */
+
+/* Define to 1 if the `closedir' function returns void instead of `int'. */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if using `getloadavg.c'. */
+/* #undef C_GETLOADAVG */
+
+/* Define to 1 for DGUX with <sys/dg_sys_info.h>. */
+/* #undef DGUX */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 1
+
+/* Define to 1 if the `getloadavg' function needs to be run setuid or setgid.
+   */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+#define HAVE_ALLOCA_H 1
+
+/* Define to 1 if your compiler conforms to the ANSI C standard. */
+#define HAVE_ANSI_COMPILER 1
+
+/* Define to 1 if you have the `atexit' function. */
+#define HAVE_ATEXIT 1
+
+/* Define to 1 if you have the `bsd_signal' function. */
+#define HAVE_BSD_SIGNAL 1
+#define HAVE_DECL_BSD_SIGNAL 1
+
+/* Use case insensitive file names */
+/* #undef HAVE_CASE_INSENSITIVE_FS */
+
+/* Define to 1 if you have the clock_gettime function. */
+#define HAVE_CLOCK_GETTIME 1
+
+/* Define to 1 if you have the declaration of `sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL_SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of `_sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL__SYS_SIGLIST 1
+
+/* Define to 1 if you have the declaration of `__sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL___SYS_SIGLIST 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+#define HAVE_DOPRNT 1
+
+/* Use platform specific coding */
+/* #undef HAVE_DOS_PATHS */
+
+/* Define to 1 if you have the `dup2' function. */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the `fdopen' function. */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if you have the `fork' function. */
+#define HAVE_FORK 1
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getgroups' function. */
+#define HAVE_GETGROUPS 1
+
+/* Define to 1 if you have the `gethostbyname' function. */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the `gethostname' function. */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the `getloadavg' function. */
+#define HAVE_GETLOADAVG 1
+
+/* Define to 1 if you have the `getrlimit' function. */
+#define HAVE_GETRLIMIT 1
+
+/* Define to 1 if you have a standard gettimeofday function */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `dgc' library (-ldgc). */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the `kstat' library (-lkstat). */
+#define HAVE_LIBKSTAT 1
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you have the `lstat' function. */
+#define HAVE_LSTAT 1
+
+/* Define to 1 if you have the <mach/mach.h> header file. */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have the `mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nlist.h> header file. */
+/* #undef HAVE_NLIST_H */
+
+/* Define to 1 if you have the `pipe' function. */
+#define HAVE_PIPE 1
+
+/* Define to 1 if you have the `pselect' function. */
+#define HAVE_PSELECT 1
+
+/* Define to 1 if you have the `pstat_getdynamic' function. */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the `readlink' function. */
+#define HAVE_READLINK 1
+
+/* Define to 1 if you have the `realpath' function. */
+#define HAVE_REALPATH 1
+
+/* Define to 1 if <signal.h> defines the SA_RESTART constant. */
+#define HAVE_SA_RESTART 1
+
+/* Define to 1 if you have the `setegid' function. */
+#define HAVE_SETEGID 1
+
+/* Define to 1 if you have the `seteuid' function. */
+#define HAVE_SETEUID 1
+
+/* Define to 1 if you have the `setlinebuf' function. */
+#define HAVE_SETLINEBUF 1
+
+/* Define to 1 if you have the `setlocale' function. */
+/* #undef HAVE_SETLOCALE */
+
+/* Define to 1 if you have the `setregid' function. */
+#define HAVE_SETREGID 1
+
+/* Define to 1 if you have the `setreuid' function. */
+#define HAVE_SETREUID 1
+
+/* Define to 1 if you have the `setrlimit' function. */
+#define HAVE_SETRLIMIT 1
+
+/* Define to 1 if you have the `setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+/* Define to 1 if you have the `sigaction' function. */
+#define HAVE_SIGACTION 1
+
+/* Define to 1 if you have the `sigsetmask' function. */
+/* #undef HAVE_SIGSETMASK */
+
+/* Define to 1 if you have the `socket' function. */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strcmpi' function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the `strncasecmp' function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the `strncmpi' function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the `strncmp' function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the `strcoll' function and it is properly defined.
+   */
+#define HAVE_STRCOLL 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the `stricmp' function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strsignal' function. */
+#define HAVE_STRSIGNAL 1
+
+/* Define to 1 if `n_un.n_name' is member of `struct nlist'. */
+/* #undef HAVE_STRUCT_NLIST_N_UN_N_NAME */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/resource.h> header file. */
+#define HAVE_SYS_RESOURCE_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/timeb.h> header file. */
+#define HAVE_SYS_TIMEB_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+#define HAVE_SYS_WAIT_H 1
+
+/* Define to 1 if you have the \`union wait' type in <sys/wait.h>. */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the <varargs.h> header file. */
+/* #undef HAVE_VARARGS_H */
+
+/* Define to 1 if you have the `vfork' function. */
+#define HAVE_VFORK 1
+
+/* Define to 1 if you have the <vfork.h> header file. */
+/* #undef HAVE_VFORK_H */
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the `wait3' function. */
+#define HAVE_WAIT3 1
+
+/* Define to 1 if you have the `waitpid' function. */
+#define HAVE_WAITPID 1
+
+/* Define to 1 if `fork' works. */
+#define HAVE_WORKING_FORK 1
+
+/* Define to 1 if `vfork' works. */
+#define HAVE_WORKING_VFORK 1
+
+/* Build host information. (not used by kmk) */
+#define MAKE_HOST "i386-pc-solaris2.11"
+
+/* Define to 1 to enable job server support in GNU make. */
+#define MAKE_JOBSERVER 1
+
+/* Define to 1 to enable symbolic link timestamp checking. */
+#define MAKE_SYMLINKS 1
+
+/* Define to 1 if your `struct nlist' has an `n_un' member. Obsolete, depend
+   on `HAVE_STRUCT_NLIST_N_UN_N_NAME */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if struct nlist.n_name is a pointer rather than an array. */
+/* #undef NLIST_STRUCT */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Name of package */
+#define PACKAGE "make"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bug-make@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "GNU make"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "GNU make 3.82"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "make"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "3.82"
+
+/* Define to the character that separates directories in PATH. */
+#define PATH_SEPARATOR_CHAR ':'
+
+/* Define to 1 if the C compiler supports function prototypes. */
+#define PROTOTYPES 1
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the name of the SCCS 'get' command. */
+#define SCCS_GET "get"
+
+/* Define to 1 if the SCCS 'get' command understands the '-G<file>' option. */
+#define SCCS_GET_MINUS_G 1
+
+/* Define to 1 if the `setvbuf' function takes the buffering type as its
+   second argument and the buffer pointer as the third, as on System V before
+   release 3. */
+/* #undef SETVBUF_REVERSED */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at runtime.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if struct stat contains a nanoseconds field */
+#define ST_MTIM_NSEC st_mtim.tv_nsec
+#define ST_ATIM_NSEC st_atim.tv_nsec
+
+/* Define to 1 on System V Release 4. */
+/* #undef SVR4 */
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to 1 for Encore UMAX. */
+/* #undef UMAX */
+
+/* Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h> instead of
+   <sys/cpustats.h>. */
+/* #undef UMAX4_3 */
+
+/* Version number of package */
+#define VERSION "3.82"
+
+/* Use platform specific coding */
+/* #undef WINDOWS32 */
+
+/* Define if using the dmalloc debugging malloc package */
+/* #undef WITH_DMALLOC */
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#define _FILE_OFFSET_BITS 64
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Define like PROTOTYPES; this can be used by system headers. */
+#define __PROTOTYPES 1
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef gid_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef pid_t */
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+/* #undef uid_t */
+
+/* Define uintmax_t if not defined in <stdint.h> or <inttypes.h>. */
+/* #undef uintmax_t */
+
+/* Define as `fork' if `vfork' does not work. */
+/* #undef vfork */
+
+#include "inlined_memchr.h"
+
diff --git a/src/kmk/config.h.win b/src/kmk/config.h.win
new file mode 100644
index 0000000..eccf0b2
--- /dev/null
+++ b/src/kmk/config.h.win
@@ -0,0 +1,575 @@
+/* config.h.W32 -- hand-massaged config.h file for Windows builds       -*-C-*-
+
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef ___config_h_win
+#define ___config_h_win
+
+/* Suppress some Visual C++ warnings.
+   Maybe after the code cleanup for ISO C we can remove some/all of these.  */
+#if _MSC_VER > 1000
+# pragma warning(disable:4100) /* unreferenced formal parameter */
+# pragma warning(disable:4102) /* unreferenced label */
+# pragma warning(disable:4127) /* conditional expression is constant */
+# pragma warning(disable:4131) /* uses old-style declarator */
+# pragma warning(disable:4702) /* unreachable code */
+# ifndef _CRT_SECURE_NO_WARNINGS
+#  define _CRT_SECURE_NO_WARNINGS  /* function or variable may be unsafe */
+# endif
+# ifndef _CRT_NONSTDC_NO_WARNINGS
+#  define _CRT_NONSTDC_NO_WARNINGS /* functions w/o a leading underscore */
+# endif
+#endif
+
+/* Define to 1 if the 'closedir' function returns void instead of 'int'. */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to one of '_getb67', 'GETB67', 'getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for 'alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using 'alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if using 'getloadavg.c'. */
+#define C_GETLOADAVG 1
+
+/* Define to 1 for DGUX with <sys/dg_sys_info.h>. */
+/* #undef DGUX */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+/* #undef ENABLE_NLS */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define to 1 if the 'getloadavg' function needs to be run setuid or setgid.
+   */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 1 if you have 'alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define to 1 if you have the 'atexit' function. */
+#define HAVE_ATEXIT 1
+
+/* Define if your compiler conforms to the ANSI C standard. */
+#define HAVE_ANSI_COMPILER 1
+
+/* Use case insensitive file names */
+/* #undef HAVE_CASE_INSENSITIVE_FS */
+
+/* Define to 1 if you have the clock_gettime function. */
+/* #undef HAVE_CLOCK_GETTIME */
+
+/* Embed GNU Guile support.  Windows build sets this on the
+   compilation command line.  */
+/* #undef HAVE_GUILE */
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define to 1 if you have the declaration of 'bsd_signal', and to 0 if you
+   don't. */
+#define HAVE_DECL_BSD_SIGNAL 0
+
+/* Define to 1 if you have the declaration of 'sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL_SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of '_sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL__SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of '__sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL___SYS_SIGLIST 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines 'DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you have the <direct.h> header file, and it defines getcwd()
+   and chdir().
+   */
+#if (defined(_MSC_VER) || defined(__BORLANDC__)) && !defined(__INTERIX)
+# define HAVE_DIRECT_H 1
+#endif
+
+/* Use platform specific coding */
+#define HAVE_DOS_PATHS 1
+
+/* Define to 1 if you have the 'dup2' function. */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the 'fdopen' function. */
+#ifdef __MINGW32__
+#define HAVE_FDOPEN 1
+#endif
+
+/* Define to 1 if you have the 'fileno' function. */
+#define HAVE_FILENO 1
+
+/* Define to 1 if you have the 'getcwd' function.  */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the 'getgroups' function. */
+/* #undef HAVE_GETGROUPS */
+
+/* Define to 1 if you have the 'gethostbyname' function. */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the 'gethostname' function. */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the 'getloadavg' function. */
+/* #undef HAVE_GETLOADAVG */
+
+/* Define to 1 if you have the 'getrlimit' function. */
+/* #undef HAVE_GETRLIMIT */
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+/* #undef HAVE_GETTEXT */
+
+/* Define to 1 if you have a standard gettimeofday function */
+#ifdef __MINGW32__
+#define HAVE_GETTIMEOFDAY 1
+#endif
+
+/* Define if you have the iconv() function. */
+/* #undef HAVE_ICONV */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_INTTYPES_H 1
+#endif
+
+/* Define to 1 if you have the 'dgc' library (-ldgc). */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the 'kstat' library (-lkstat). */
+/* #undef HAVE_LIBKSTAT */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1 /* bird: differs */
+
+/* Define to 1 if you have the 'lstat' function. */
+/* #undef HAVE_LSTAT */
+
+/* Define to 1 if you have the <mach/mach.h> header file. */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the 'mkstemp' function. */
+/* #undef HAVE_MKSTEMP */
+
+/* Define to 1 if you have the 'mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines 'DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nlist.h> header file. */
+/* #undef HAVE_NLIST_H */
+
+/* Define to 1 if you have the 'pipe' function. */
+/* #undef HAVE_PIPE */
+
+/* Define to 1 if you have the 'pstat_getdynamic' function. */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the 'readlink' function. */
+/* #undef HAVE_READLINK */
+
+/* Define to 1 if you have the 'realpath' function. */
+/* #undef HAVE_REALPATH */
+
+/* Define to 1 if <signal.h> defines the SA_RESTART constant. */
+/* #undef HAVE_SA_RESTART */
+
+/* Define to 1 if you have the 'setegid' function. */
+/* #undef HAVE_SETEGID */
+
+/* Define to 1 if you have the 'seteuid' function. */
+/* #undef HAVE_SETEUID */
+
+/* Define to 1 if you have the 'setlinebuf' function. */
+/* #undef HAVE_SETLINEBUF */
+
+/* Define to 1 if you have the 'setlocale' function. */
+/*#define HAVE_SETLOCALE 1*/
+
+/* Define to 1 if you have the 'setregid' function. */
+/* #undef HAVE_SETREGID */
+
+/* Define to 1 if you have the 'setreuid' function. */
+/* #undef HAVE_SETREUID */
+
+/* Define to 1 if you have the 'setrlimit' function. */
+/* #undef HAVE_SETRLIMIT */
+
+/* Define to 1 if you have the 'setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+/* Define to 1 if you have the 'sigaction' function. */
+/* #undef HAVE_SIGACTION */
+
+/* Define to 1 if you have the 'sigsetmask' function. */
+/* #undef HAVE_SIGSETMASK */
+
+/* Define to 1 if you have the 'socket' function. */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#if defined(__MINGW32__) || _MSC_VER >= 1600 /* bird: added latter */
+# define HAVE_STDINT_H 1
+#endif
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the 'strcasecmp' function. */
+#ifdef __MINGW32__
+#define HAVE_STRCASECMP 1
+#endif
+
+/* Define to 1 if you have the 'strcmpi' function. */
+#define HAVE_STRCMPI 1
+
+/* Define to 1 if you have the 'strcoll' function and it is properly defined.
+   */
+#define HAVE_STRCOLL 1
+
+/* Define to 1 if you have the 'strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the 'strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the 'stricmp' function. */
+#define HAVE_STRICMP 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+/* #define HAVE_STRINGS_H 1 */
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the 'strncasecmp' function. */
+#ifdef __MINGW32__
+#define HAVE_STRNCASECMP 1
+#endif
+
+/* Define to 1 if you have the 'strncmpi' function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the 'strndup' function. */
+/* #undef HAVE_STRNDUP */
+
+/* Define to 1 if you have the 'strnicmp' function. */
+/*#ifdef __MINGW32__ - bird */
+#define HAVE_STRNICMP 1
+/* #endif - bird */
+
+/* Define to 1 if you have the 'strsignal' function. */
+/* #undef HAVE_STRSIGNAL */
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `ttyname' function. */
+#define HAVE_TTYNAME 1
+char *ttyname (int);
+
+/* Define to 1 if 'n_un.n_name' is a member of 'struct nlist'. */
+/* #undef HAVE_STRUCT_NLIST_N_UN_N_NAME */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines 'DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines 'DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_SYS_PARAM_H 1
+#endif
+
+/* Define to 1 if you have the <sys/resource.h> header file. */
+/* #undef HAVE_SYS_RESOURCE_H */
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/timeb.h> header file. */
+#define HAVE_SYS_TIMEB_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_SYS_TIME_H 1
+#endif
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to 1 if you have the \'union wait' type in <sys/wait.h>. */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_UNISTD_H 1
+#endif
+
+/* Define to 1 if you have the 'wait3' function. */
+/* #undef HAVE_WAIT3 */
+
+/* Define to 1 if you have the 'waitpid' function. */
+/* #undef HAVE_WAITPID */
+
+/* Build host information. (not used by kmk) */
+#define MAKE_HOST "Windows32"
+
+/* Define to 1 to enable job server support in GNU make. */
+#define MAKE_JOBSERVER 1
+
+/* Define to 1 to enable 'load' support in GNU make. */
+#define MAKE_LOAD 1
+
+/* Define to 1 to enable symbolic link timestamp checking. */
+/* #undef MAKE_SYMLINKS */
+
+/* Define to 1 if your 'struct nlist' has an 'n_un' member. Obsolete, depend
+   on 'HAVE_STRUCT_NLIST_N_UN_N_NAME */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if struct nlist.n_name is a pointer rather than an array. */
+/* #undef NLIST_STRUCT */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Name of this package (needed by automake) */
+#define PACKAGE "make"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bug-make@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "kmk"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL "http://kbuild.org/"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "4.2.1"
+
+/* Define to the character that separates directories in PATH. */
+#define PATH_SEPARATOR_CHAR ';'
+
+/* Define as the return type of signal handlers ('int' or 'void'). */
+#define RETSIGTYPE void
+
+/* Define to the name of the SCCS 'get' command. */
+#define SCCS_GET "echo no sccs get"
+
+/* Define this if the SCCS 'get' command understands the '-G<file>' option. */
+/* #undef SCCS_GET_MINUS_G */
+
+/* Define to 1 if the 'setvbuf' function takes the buffering type as its
+   second argument and the buffer pointer as the third, as on System V before
+   release 3. */
+/* #undef SETVBUF_REVERSED */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run time.
+        STACK_DIRECTION > 0 => grows toward higher addresses
+        STACK_DIRECTION < 0 => grows toward lower addresses
+        STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the 'S_IS*' macros in <sys/stat.h> do not work properly. */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if struct stat contains a nanoseconds field */
+#define ST_MTIM_NSEC st_mtim.tv_nsec   /* bird */
+#define ST_ATIM_NSEC st_atim.tv_nsec   /* bird */
+
+/* Define to 1 on System V Release 4. */
+/* #undef SVR4 */
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#ifdef __MINGW32__
+#define TIME_WITH_SYS_TIME 1
+#endif
+
+/* Define to 1 for Encore UMAX. */
+/* #undef UMAX */
+
+/* Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h> instead of
+   <sys/cpustats.h>. */
+/* #undef UMAX4_3 */
+
+/* Version number of package */
+#define VERSION "4.2.1"
+
+/* Define if using the dmalloc debugging malloc package */
+/* #undef WITH_DMALLOC */
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for 'stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Define to empty if 'const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to 'int' if <sys/types.h> doesn't define. */
+#define gid_t int
+
+/* Define to 'int' if <sys/types.h> does not define. */
+/* Note (bird)! sub_proc.c needs this to be pointer sized. */
+#define pid_t intptr_t
+
+/* Define to 'int' if <sys/types.h> doesn't define. */
+#define uid_t int
+
+/* Define uintmax_t if not defined in <stdint.h> or <inttypes.h>. */
+#if !HAVE_STDINT_H && !HAVE_INTTYPES_H
+# if 0
+#  define uintmax_t unsigned long
+# else
+#  define uintmax_t unsigned __int64
+# endif
+#endif
+
+/* Define if you have <sys/wait.h> that is POSIX.1 compatible.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to the installation directory for locales.  */
+#define LOCALEDIR ""
+
+/*
+ * Refer to README.W32 for info on the following settings
+ */
+
+
+/*
+ * If you have a shell that does not grok 'sh -c quoted-command-line'
+ * correctly, you need this setting. Please see below for specific
+ * shell support.
+ */
+/*#define BATCH_MODE_ONLY_SHELL 1 */
+
+/*
+ * Define if you have the Cygnus "Cygwin" GNU Windows32 tool set.
+ * Do NOT define BATCH_MODE_ONLY_SHELL if you define HAVE_CYGWIN_SHELL
+ */
+/*#define HAVE_CYGWIN_SHELL 1 */
+
+/*
+ * Define if you have the MKS tool set or shell. Do NOT define
+ * BATCH_MODE_ONLY_SHELL if you define HAVE_MKS_SHELL
+ */
+/*#define HAVE_MKS_SHELL 1 */
+
+/*
+ * Enforce the mutual exclusivity restriction.
+ */
+#ifdef HAVE_MKS_SHELL
+#undef BATCH_MODE_ONLY_SHELL
+#endif
+
+#ifdef HAVE_CYGWIN_SHELL
+#undef BATCH_MODE_ONLY_SHELL
+#endif
+
+/* bird stat hacks. */
+#include <io.h>
+#include <direct.h>
+#include "nt/ntstat.h"
+
+/* bird dirent hack. */
+#define _DIRENT_H /* see w32/dirent.h */
+#include "nt/ntdir.h"
+#define _DIRENT_HAVE_D_NAMLEN 1
+#define _DIRENT_HAVE_D_TYPE   1
+
+/* bird: Not sure if this is necessary any more... */
+#define BATCH_MODE_ONLY_SHELL
+
+#include "inlined_memchr.h"
+
+/* bird: Include mscfakes.h to make sure we have all it's tricks applied. */
+#ifndef ___mscfakes_h
+# include "kmkbuiltin/mscfakes.h"
+#endif
+
+/*
+ * Map posixfcn.c stuff to non-conflicting names.
+ */
+#include <stdio.h>
+#include <io.h>
+
+#define tmpfile posixfcn_tmpfile
+FILE *posixfcn_tmpfile(void);
+
+#define isatty posixfcn_isatty
+int posixfcn_isatty(int fd);
+
+#endif /* bird */
+
diff --git a/src/kmk/config/.gitignore b/src/kmk/config/.gitignore
new file mode 100644
index 0000000..d11a488
--- /dev/null
+++ b/src/kmk/config/.gitignore
@@ -0,0 +1,12 @@
+ar-lib
+compile
+config.guess
+config.rpath
+config.sub
+depcomp
+install-sh
+mdate-sh
+missing
+texinfo.tex
+*.m4
+!dospaths.m4
diff --git a/src/kmk/config/ChangeLog.1 b/src/kmk/config/ChangeLog.1
new file mode 100644
index 0000000..8549501
--- /dev/null
+++ b/src/kmk/config/ChangeLog.1
@@ -0,0 +1,49 @@
+2012-01-15  Paul Smith  <psmith@gnu.org>
+
+	* dospaths.m4: Use AC_LANG_PROGRAM to encapsulate the test code.
+	Fixes Savannah bug #35256.  Patch from Sebastian Pipping.
+
+2006-03-09  Paul Smith  <psmith@gnu.org>
+
+	* dospaths.m4: Add MSYS to the list of targets allowing DOS-style
+	pathnames.  Reported by David Ergo <david.ergo@alterface.com>.
+
+2005-07-01  Paul D. Smith  <psmith@gnu.org>
+
+	* Makefile.am (EXTRA_DIST): Added more M4 files to EXTRA_DIST, so
+	users can re-run aclocal.
+
+2003-04-30  Paul D. Smith  <psmith@gnu.org>
+
+	* dospaths.m4: New macro to test for DOS-style pathnames, based on
+	coreutils 5.0 "dos.m4" by Jim Meyering.
+
+2002-04-21  gettextize  <bug-gnu-gettext@gnu.org>
+
+	* codeset.m4: New file, from gettext-0.11.1.
+	* gettext.m4: New file, from gettext-0.11.1.
+	* glibc21.m4: New file, from gettext-0.11.1.
+	* iconv.m4: New file, from gettext-0.11.1.
+	* isc-posix.m4: New file, from gettext-0.11.1.
+	* lcmessage.m4: New file, from gettext-0.11.1.
+	* lib-ld.m4: New file, from gettext-0.11.1.
+	* lib-link.m4: New file, from gettext-0.11.1.
+	* lib-prefix.m4: New file, from gettext-0.11.1.
+	* progtest.m4: New file, from gettext-0.11.1.
+	* Makefile.am: New file.
+
+
+Copyright (C) 2002-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/config/Makefile.am b/src/kmk/config/Makefile.am
new file mode 100644
index 0000000..7bce036
--- /dev/null
+++ b/src/kmk/config/Makefile.am
@@ -0,0 +1,18 @@
+# -*-Makefile-*-, or close enough
+# Copyright (C) 2002-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation; either version 3 of the License, or (at your option)
+# any later version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Autoconf / automake know how to handle this directory.
diff --git a/src/kmk/config/dospaths.m4 b/src/kmk/config/dospaths.m4
new file mode 100644
index 0000000..9aa9814
--- /dev/null
+++ b/src/kmk/config/dospaths.m4
@@ -0,0 +1,33 @@
+# Test if the system uses DOS-style pathnames (drive specs and backslashes)
+# By Paul Smith <psmith@gnu.org>.  Based on dos.m4 by Jim Meyering.
+#
+# Copyright (C) 1993-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+AC_DEFUN([pds_AC_DOS_PATHS], [
+  AC_CACHE_CHECK([whether system uses MSDOS-style paths], [ac_cv_dos_paths], [
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#if !defined _WIN32 && !defined __WIN32__ && !defined __MSDOS__ && !defined __EMX__ && !defined __MSYS__ && !defined __CYGWIN__
+neither MSDOS nor Windows nor OS2
+#endif
+]])],
+        [ac_cv_dos_paths=yes],
+        [ac_cv_dos_paths=no])])
+
+  AS_IF([test x"$ac_cv_dos_paths" = xyes],
+  [ AC_DEFINE_UNQUOTED([HAVE_DOS_PATHS], 1,
+                       [Define if the system uses DOS-style pathnames.])])
+])
diff --git a/src/kmk/configh.dos.template b/src/kmk/configh.dos.template
new file mode 100644
index 0000000..c43e644
--- /dev/null
+++ b/src/kmk/configh.dos.template
@@ -0,0 +1,113 @@
+/* configh.dos -- hand-massaged config.h file for MS-DOS builds         -*-C-*-
+
+Copyright (C) 1994-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Include this header to make __DJGPP_MINOR__ available because DJGPP ports
+   of GCC 4.3.0 and later no longer do it automatically.  */
+#include <sys/version.h>
+
+/* Many things are defined already by a system header.  */
+#include <sys/config.h>
+
+#if __DJGPP__ > 2 || __DJGPP_MINOR__ > 1
+
+/* Define to 1 if 'sys_siglist' is declared by <signal.h> or <unistd.h>. */
+# define SYS_SIGLIST_DECLARED 1
+
+/* Define to 1 if the C library defines the variable '_sys_siglist'.  */
+# define HAVE_DECL_SYS_SIGLIST 1
+
+#else
+
+/* Define NSIG.  */
+# define NSIG SIGMAX
+
+#endif
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define to 1 if you have 'alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have the fdopen function.  */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if you have the 'getgroups' function. */
+#define HAVE_GETGROUPS 1
+
+/* Define to 1 if you have the <memory.h> header file.  */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the mkstemp function.  */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have the 'mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the 'setlinebuf' function. */
+#define HAVE_SETLINEBUF 1
+
+/* Define to 1 if you have the 'setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+#define SCCS_GET "get"
+
+/* Define to 'unsigned long' or 'unsigned long long'
+   if <inttypes.h> doesn't define.  */
+#define uintmax_t unsigned long long
+
+/* Define the type of the first arg to select().  */
+#define fd_set_size_t int
+
+/* Define to 1 if you have the select function.  */
+#define HAVE_SELECT 1
+
+/* Define to 1 if you have the stricmp function.  */
+#define HAVE_STRICMP 1
+
+/* Define to 1 if you have the 'strncasecmp' function. */
+#define HAVE_STRNCASECMP 1
+
+/* Name of the package */
+#define PACKAGE "%PACKAGE%"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bug-%PACKAGE%@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "GNU %PACKAGE%"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "GNU %PACKAGE% %VERSION%"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "%PACKAGE%"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "%VERSION%"
+
+/* Output sync sypport */
+#define NO_OUTPUT_SYNC
+
+/* Version number of package */
+#define VERSION "%VERSION%"
+
+/* Build host information. */
+#define MAKE_HOST "i386-pc-msdosdjgpp"
+
+/* Grok DOS paths (drive specs and backslash path element separators) */
+#define HAVE_DOS_PATHS
diff --git a/src/kmk/configure.ac b/src/kmk/configure.ac
new file mode 100644
index 0000000..d950182
--- /dev/null
+++ b/src/kmk/configure.ac
@@ -0,0 +1,534 @@
+# Process this file with autoconf to produce a configure script.
+#
+# Copyright (C) 1993-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+AC_INIT([GNU make],[4.2.1],[bug-make@gnu.org])
+
+AC_PREREQ([2.69])
+
+# Autoconf setup
+AC_CONFIG_AUX_DIR([config])
+AC_CONFIG_SRCDIR([vpath.c])
+AC_CONFIG_HEADERS([config.h])
+
+# Automake setup
+# We have to enable "foreign" because ChangeLog is auto-generated
+# We cannot enable -Werror because gettext 0.18.1 has invalid content
+# When we update gettext to 0.18.3 or better we can add it again.
+# bird: Added subdir-objects
+AM_INIT_AUTOMAKE([1.15 foreign -Werror -Wall subdir-objects])
+
+# Checks for programs.
+AC_USE_SYSTEM_EXTENSIONS
+AC_PROG_CC
+AC_PROG_INSTALL
+AC_PROG_RANLIB
+AC_PROG_CPP
+AC_CHECK_PROG([AR], [ar], [ar], [ar])
+# Perl is needed for the test suite (only)
+AC_CHECK_PROG([PERL], [perl], [perl], [perl])
+
+# Needed for w32/Makefile.am
+AM_PROG_AR
+
+# Specialized system macros
+AC_CANONICAL_HOST
+AC_AIX
+AC_ISC_POSIX
+AC_MINIX
+
+# Enable gettext, in "external" mode.
+# bird: causes trouble when it doesn't find 'po' in SUBDIRS, so skip it.
+#AM_GNU_GETTEXT_VERSION([0.19.4])
+#AM_GNU_GETTEXT([external])
+
+# This test must come as early as possible after the compiler configuration
+# tests, because the choice of the file model can (in principle) affect
+# whether functions and headers are available, whether they work, etc.
+AC_SYS_LARGEFILE
+
+# Checks for libraries.
+AC_SEARCH_LIBS([getpwnam], [sun])
+
+# Checks for header files.
+AC_HEADER_STDC
+AC_HEADER_DIRENT
+AC_HEADER_STAT
+AC_HEADER_TIME
+AC_CHECK_HEADERS([stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
+                  memory.h sys/param.h sys/resource.h sys/time.h sys/timeb.h \
+                  sys/select.h])
+
+AM_PROG_CC_C_O
+AC_C_CONST
+AC_TYPE_SIGNAL
+AC_TYPE_UID_T
+AC_TYPE_PID_T
+AC_TYPE_OFF_T
+AC_TYPE_SIZE_T
+AC_TYPE_SSIZE_T
+AC_TYPE_UINTMAX_T
+
+# Find out whether our struct stat returns nanosecond resolution timestamps.
+
+AC_STRUCT_ST_MTIM_NSEC
+AC_STRUCT_ST_ATIM_NSEC
+AC_CACHE_CHECK([whether to use high resolution file timestamps],
+               [make_cv_file_timestamp_hi_res],
+[ make_cv_file_timestamp_hi_res=no
+  AS_IF([test "$ac_cv_struct_st_mtim_nsec" != no],
+        [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif]],
+                      [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
+        [make_cv_file_timestamp_hi_res=yes])
+  ])])
+AS_IF([test "$make_cv_file_timestamp_hi_res" = yes], [val=1], [val=0])
+AC_DEFINE_UNQUOTED([FILE_TIMESTAMP_HI_RES], [$val],
+                   [Use high resolution file timestamps if nonzero.])
+
+AS_IF([test "$make_cv_file_timestamp_hi_res" = yes],
+[ # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
+  # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
+  AC_SEARCH_LIBS([clock_gettime], [rt posix4])
+  AS_IF([test "$ac_cv_search_clock_gettime" != no],
+  [ AC_DEFINE([HAVE_CLOCK_GETTIME], [1],
+              [Define to 1 if you have the clock_gettime function.])
+  ])
+])
+
+# Check for DOS-style pathnames.
+pds_AC_DOS_PATHS
+
+# See if we have a standard version of gettimeofday().  Since actual
+# implementations can differ, just make sure we have the most common
+# one.
+AC_CACHE_CHECK([for standard gettimeofday], [ac_cv_func_gettimeofday],
+  [ac_cv_func_gettimeofday=no
+   AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
+                  #include <stdlib.h> /* kmk/darwin: for exit */
+                  int main ()
+                  {
+                    struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
+                    exit (gettimeofday (&t, 0) != 0
+                          || t.tv_sec < 0 || t.tv_usec < 0);
+                  }]])],
+                  [ac_cv_func_gettimeofday=yes],
+                  [ac_cv_func_gettimeofday=no],
+                  [ac_cv_func_gettimeofday="no (cross-compiling)"])])
+AS_IF([test "$ac_cv_func_gettimeofday" = yes],
+[ AC_DEFINE([HAVE_GETTIMEOFDAY], [1],
+            [Define to 1 if you have a standard gettimeofday function])
+])
+
+AC_CHECK_FUNCS([strdup strndup mkstemp mktemp fdopen fileno \
+                dup dup2 getcwd realpath sigsetmask sigaction \
+                getgroups seteuid setegid setlinebuf setreuid setregid \
+                getrlimit setrlimit setvbuf pipe strerror strsignal \
+                lstat readlink atexit isatty ttyname pselect])
+
+# We need to check declarations, not just existence, because on Tru64 this
+# function is not declared without special flags, which themselves cause
+# other problems.  We'll just use our own.
+AC_CHECK_DECLS([bsd_signal], [], [], [[#define _GNU_SOURCE 1
+#include <signal.h>]])
+
+AC_FUNC_FORK
+
+AC_FUNC_SETVBUF_REVERSED
+
+# Rumor has it that strcasecmp lives in -lresolv on some odd systems.
+# It doesn't hurt much to use our own if we can't find it so I don't
+# make the effort here.
+AC_CHECK_FUNCS([strcasecmp strncasecmp strcmpi strncmpi stricmp strnicmp])
+
+# strcoll() is used by the GNU glob library
+AC_FUNC_STRCOLL
+
+AC_FUNC_ALLOCA
+AC_FUNC_CLOSEDIR_VOID
+
+# bird: This guile detection does not work on rhel4.  Disabled it all since we doesn't care about guile.
+## See if the user wants to add (or not) GNU Guile support
+#PKG_PROG_PKG_CONFIG
+#AC_ARG_WITH([guile], [AS_HELP_STRING([--with-guile],
+#            [Support GNU Guile for embedded scripting])])
+#
+## For some strange reason, at least on Ubuntu, each version of Guile
+## comes with it's own PC file so we have to specify them as individual
+## packages.  Ugh.
+#AS_IF([test "x$with_guile" != xno],
+#[ PKG_CHECK_MODULES([GUILE], [guile-2.0], [have_guile=yes],
+#  [PKG_CHECK_MODULES([GUILE], [guile-1.8], [have_guile=yes],
+#    [have_guile=no])])
+#])
+#
+#AS_IF([test "$have_guile" = yes],
+#      [AC_DEFINE([HAVE_GUILE], [1], [Embed GNU Guile support])])
+#
+#AM_CONDITIONAL([HAVE_GUILE], [test "$have_guile" = yes])
+
+AC_FUNC_GETLOADAVG
+
+# AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
+# doesn't.  So, we will.
+
+AS_IF([test "$ac_cv_header_nlist_h" = yes],
+[ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
+        [[struct nlist nl;
+          nl.n_name = "string";
+          return 0;]])],
+        [make_cv_nlist_struct=yes],
+        [make_cv_nlist_struct=no])
+  AS_IF([test "$make_cv_nlist_struct" = yes],
+  [ AC_DEFINE([NLIST_STRUCT], [1],
+       [Define to 1 if struct nlist.n_name is a pointer rather than an array.])
+  ])
+])
+
+AC_CHECK_DECLS([sys_siglist, _sys_siglist, __sys_siglist], , ,
+  [AC_INCLUDES_DEFAULT
+#include <signal.h>
+/* NetBSD declares sys_siglist in unistd.h.  */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+])
+
+
+# Check out the wait reality.
+AC_CHECK_HEADERS([sys/wait.h],[],[],[[#include <sys/types.h>]])
+AC_CHECK_FUNCS([waitpid wait3])
+AC_CACHE_CHECK([for union wait], [make_cv_union_wait],
+[ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#include <sys/wait.h>]],
+     [[union wait status; int pid; pid = wait (&status);
+#ifdef WEXITSTATUS
+/* Some POSIXoid systems have both the new-style macros and the old
+   union wait type, and they do not work together.  If union wait
+   conflicts with WEXITSTATUS et al, we don't want to use it at all.  */
+        if (WEXITSTATUS (status) != 0) pid = -1;
+#ifdef WTERMSIG
+        /* If we have WEXITSTATUS and WTERMSIG, just use them on ints.  */
+        -- blow chunks here --
+#endif
+#endif
+#ifdef HAVE_WAITPID
+        /* Make sure union wait works with waitpid.  */
+        pid = waitpid (-1, &status, 0);
+#endif
+      ]])],
+    [make_cv_union_wait=yes],
+    [make_cv_union_wait=no])
+])
+AS_IF([test "$make_cv_union_wait" = yes],
+[ AC_DEFINE([HAVE_UNION_WAIT], [1],
+            [Define to 1 if you have the 'union wait' type in <sys/wait.h>.])
+])
+
+
+# If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
+AS_IF([test "$PATH_SEPARATOR" = ';'],
+[ AC_DEFINE([HAVE_DOS_PATHS], [1],
+            [Define to 1 if your system requires backslashes or drive specs in pathnames.])
+])
+
+# See if the user wants to use pmake's "customs" distributed build capability
+AC_SUBST([REMOTE]) REMOTE=stub
+use_customs=false
+AC_ARG_WITH([customs],
+[AC_HELP_STRING([--with-customs=DIR],
+                [enable remote jobs via Customs--see README.customs])],
+[ AS_CASE([$withval], [n|no], [:],
+    [make_cppflags="$CPPFLAGS"
+     AS_CASE([$withval],
+             [y|ye|yes], [:],
+             [CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
+              make_ldflags="$LDFLAGS -L$with_customs/lib"])
+     CF_NETLIBS
+     AC_CHECK_HEADER([customs.h],
+                     [use_customs=true
+                      REMOTE=cstms
+                      LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
+                     [with_customs=no
+                      CPPFLAGS="$make_cppflags" make_badcust=yes])
+    ])
+])
+
+# Tell automake about this, so it can include the right .c files.
+AM_CONDITIONAL([USE_CUSTOMS], [test "$use_customs" = true])
+
+# See if the user asked to handle case insensitive file systems.
+AH_TEMPLATE([HAVE_CASE_INSENSITIVE_FS], [Use case insensitive file names])
+AC_ARG_ENABLE([case-insensitive-file-system],
+  AC_HELP_STRING([--enable-case-insensitive-file-system],
+                 [assume file systems are case insensitive]),
+  [AS_IF([test "$enableval" = yes], [AC_DEFINE([HAVE_CASE_INSENSITIVE_FS])])])
+
+# See if we can handle the job server feature, and if the user wants it.
+AC_ARG_ENABLE([job-server],
+  AC_HELP_STRING([--disable-job-server],
+                 [disallow recursive make communication during -jN]),
+  [make_cv_job_server="$enableval" user_job_server="$enableval"],
+  [make_cv_job_server="yes"])
+
+AS_IF([test "$ac_cv_func_waitpid" = no && test "$ac_cv_func_wait3" = no],
+      [has_wait_nohang=no],
+      [has_wait_nohang=yes])
+
+AC_CACHE_CHECK([for SA_RESTART], [make_cv_sa_restart], [
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
+      [[return SA_RESTART;]])],
+    [make_cv_sa_restart=yes],
+    [make_cv_sa_restart=no])])
+
+AS_IF([test "$make_cv_sa_restart" != no],
+[ AC_DEFINE([HAVE_SA_RESTART], [1],
+     [Define to 1 if <signal.h> defines the SA_RESTART constant.])
+])
+
+# Only allow jobserver on systems that support it
+AS_CASE([/$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/],
+  [*/no/*], [make_cv_job_server=no])
+
+# Also supported on OS2 and MinGW
+AS_CASE([$host_os], [os2*|mingw*], [make_cv_job_server=yes])
+
+# If we support it and the user didn't disable it, build with jobserver
+AS_CASE([/$make_cv_job_server/$user_job_server/],
+  [*/no/*], [: no jobserver],
+  [AC_DEFINE(MAKE_JOBSERVER, 1,
+             [Define to 1 to enable job server support in GNU make.])
+  ])
+
+# If dl*() functions are supported we can enable the load operation
+AC_CHECK_DECLS([dlopen, dlsym, dlerror], [], [],
+  [[#include <dlfcn.h>]])
+
+AC_ARG_ENABLE([load],
+  AC_HELP_STRING([--disable-load],
+                 [disable support for the 'load' operation]),
+  [make_cv_load="$enableval" user_load="$enableval"],
+  [make_cv_load="yes"])
+
+AS_CASE([/$ac_cv_have_decl_dlopen/$ac_cv_have_decl_dlsym/$ac_cv_have_decl_dlerror/],
+  [*/no/*], [make_cv_load=no])
+
+# We might need -ldl
+AS_IF([test "$make_cv_load" = yes], [
+  AC_SEARCH_LIBS([dlopen], [dl], [], [make_cv_load=])
+  ])
+
+AS_CASE([/$make_cv_load/$user_load/],
+  [*/no/*], [make_cv_load=no],
+  [AC_DEFINE(MAKE_LOAD, 1,
+             [Define to 1 to enable 'load' support in GNU make.])
+  ])
+
+# If we want load support, we might need to link with export-dynamic.
+# See if we can figure it out.  Unfortunately this is very difficult.
+# For example passing -rdynamic to the SunPRO linker gives a warning
+# but succeeds and creates a shared object, not an executable!
+AS_IF([test "$make_cv_load" = yes], [
+  AC_MSG_CHECKING([If the linker accepts -Wl,--export-dynamic])
+  old_LDFLAGS="$LDFLAGS"
+  LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
+  AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){}])],
+    [AC_MSG_RESULT([yes])
+     AC_SUBST([AM_LDFLAGS], [-Wl,--export-dynamic])],
+    [AC_MSG_RESULT([no])
+     AC_MSG_CHECKING([If the linker accepts -rdynamic])
+     LDFLAGS="$old_LDFLAGS -rdynamic"
+     AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){}])],
+       [AC_MSG_RESULT([yes])
+        AC_SUBST([AM_LDFLAGS], [-rdynamic])],
+       [AC_MSG_RESULT([no])])
+   ])
+  LDFLAGS="$old_LDFLAGS"
+])
+
+# if we have both lstat() and readlink() then we can support symlink
+# timechecks.
+AS_IF([test "$ac_cv_func_lstat" = yes && test "$ac_cv_func_readlink" = yes],
+  [ AC_DEFINE([MAKE_SYMLINKS], [1],
+              [Define to 1 to enable symbolic link timestamp checking.])
+])
+
+# Find the SCCS commands, so we can include them in our default rules.
+
+AC_CACHE_CHECK([for location of SCCS get command], [make_cv_path_sccs_get], [
+  AS_IF([test -f /usr/sccs/get],
+        [make_cv_path_sccs_get=/usr/sccs/get],
+        [make_cv_path_sccs_get=get])
+])
+AC_DEFINE_UNQUOTED([SCCS_GET], ["$make_cv_path_sccs_get"],
+                   [Define to the name of the SCCS 'get' command.])
+
+ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
+AS_IF([(/usr/sccs/admin -n s.conftest || admin -n s.conftest) >/dev/null 2>&1 &&
+   test -f s.conftest],
+[ # We successfully created an SCCS file.
+  AC_CACHE_CHECK([if SCCS get command understands -G], [make_cv_sys_get_minus_G],
+    [AS_IF([$make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
+            test -f conftoast],
+           [make_cv_sys_get_minus_G=yes],
+           [make_cv_sys_get_minus_G=no])
+    ])
+  AS_IF([test "$make_cv_sys_get_minus_G" = yes],
+    [AC_DEFINE([SCCS_GET_MINUS_G], [1],
+     [Define to 1 if the SCCS 'get' command understands the '-G<file>' option.])
+    ])
+])
+rm -f s.conftest conftoast
+
+## bird: always use our glob impl. Avoids trouble with newish glibc.
+# Check the system to see if it provides GNU glob.  If not, use our
+# local version.
+#x# AC_CACHE_CHECK([if system libc has GNU glob], [make_cv_sys_gnu_glob],
+#x# [ AC_EGREP_CPP([gnu glob],[
+#x# #include <features.h>
+#x# #include <glob.h>
+#x# #include <fnmatch.h>
+#x#
+#x# #define GLOB_INTERFACE_VERSION 1
+#x# #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
+#x# # include <gnu-versions.h>
+#x# # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
+#x#    gnu glob
+#x# # endif
+#x# #endif],
+#x#         [make_cv_sys_gnu_glob=yes],
+#x#         [make_cv_sys_gnu_glob=no])])
+#x# AS_IF([test "$make_cv_sys_gnu_glob" = no],
+AS_IF([test yes = yes],
+[ GLOBINC='-I$(srcdir)/glob'
+  GLOBLIB=glob/libglob.a
+  make_cv_sys_gnu_glob=no
+])
+AC_SUBST([GLOBINC])
+AC_SUBST([GLOBLIB])
+
+# Tell automake about this, so it can build the right .c files.
+AM_CONDITIONAL([USE_LOCAL_GLOB], [test "$make_cv_sys_gnu_glob" = no])
+
+# Let the makefile know what our build host is
+
+AC_DEFINE_UNQUOTED([MAKE_HOST],["$host"],[Build host information.])
+MAKE_HOST="$host"
+AC_SUBST([MAKE_HOST])
+
+w32_target_env=no
+AM_CONDITIONAL([WINDOWSENV], [false])
+
+AS_CASE([$host],
+  [*-*-mingw32],
+   [AM_CONDITIONAL([WINDOWSENV], [true])
+    w32_target_env=yes
+    AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
+    AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
+  ])
+
+AC_DEFINE_UNQUOTED([PATH_SEPARATOR_CHAR],['$PATH_SEPARATOR'],
+        [Define to the character that separates directories in PATH.])
+
+# Include the Maintainer's Makefile section, if it's here.
+
+MAINT_MAKEFILE=/dev/null
+AS_IF([test -r "$srcdir/maintMakefile"],
+[ MAINT_MAKEFILE="$srcdir/maintMakefile"
+])
+AC_SUBST_FILE([MAINT_MAKEFILE])
+
+# Allow building with dmalloc
+AM_WITH_DMALLOC
+
+# Forcibly disable SET_MAKE.  If it's set it breaks things like the test
+# scripts, etc.
+SET_MAKE=
+
+# Sanity check and inform the user of what we found
+
+AS_IF([test "x$make_badcust" = xyes], [
+echo
+echo "WARNING: --with-customs specified but no customs.h could be found;"
+echo "         disabling Customs support."
+echo
+])
+
+AS_CASE([$with_customs],
+[""|n|no|y|ye|yes], [:],
+[AS_IF([test -f "$with_customs/lib/libcustoms.a"], [:],
+[ echo
+  echo "WARNING: '$with_customs/lib' does not appear to contain the"
+  echo "         Customs library.  You must build and install Customs"
+  echo "         before compiling GNU make."
+  echo
+])])
+
+AS_IF([test "x$has_wait_nohang" = xno],
+[ echo
+  echo "WARNING: Your system has neither waitpid() nor wait3()."
+  echo "         Without one of these, signal handling is unreliable."
+  echo "         You should be aware that running GNU make with -j"
+  echo "         could result in erratic behavior."
+  echo
+])
+
+AS_IF([test "x$make_cv_job_server" = xno && test "x$user_job_server" = xyes],
+[ echo
+  echo "WARNING: Make job server requires a POSIX-ish system that"
+  echo "         supports the pipe(), sigaction(), and either"
+  echo "         waitpid() or wait3() functions.  Your system doesn't"
+  echo "         appear to provide one or more of those."
+  echo "         Disabling job server support."
+  echo
+])
+
+AS_IF([test "x$make_cv_load" = xno && test "x$user_load" = xyes],
+[ echo
+  echo "WARNING: 'load' support requires a POSIX-ish system that"
+  echo "         supports the dlopen(), dlsym(), and dlerror() functions."
+  echo "         Your system doesn't appear to provide one or more of these."
+  echo "         Disabling 'load' support."
+  echo
+])
+
+# Specify what files are to be created.
+# bird: Removed po/Makefile.in.
+#AC_CONFIG_FILES([Makefile glob/Makefile po/Makefile.in config/Makefile \
+#                 doc/Makefile w32/Makefile tests/config-flags.pm])
+AC_CONFIG_FILES([Makefile glob/Makefile config/Makefile \
+                 doc/Makefile w32/Makefile tests/config-flags.pm])
+
+# OK, do it!
+
+AC_OUTPUT
+
+# We only generate the build.sh if we have a build.sh.in; we won't have
+# one before we've created a distribution.
+AS_IF([test -f "$srcdir/build.sh.in"],
+[ ./config.status --file build.sh
+  chmod +x build.sh
+])
+
+dnl Local Variables:
+dnl comment-start: "dnl "
+dnl comment-end: ""
+dnl comment-start-skip: "\\bdnl\\b\\s *"
+dnl compile-command: "make configure config.h.in"
+dnl End:
diff --git a/src/kmk/configure.bat b/src/kmk/configure.bat
new file mode 100644
index 0000000..3c41f38
--- /dev/null
+++ b/src/kmk/configure.bat
@@ -0,0 +1,60 @@
+@echo off

+rem Copyright (C) 1994-2016 Free Software Foundation, Inc.

+rem This file is part of GNU Make.

+rem

+rem GNU Make is free software; you can redistribute it and/or modify it under

+rem the terms of the GNU General Public License as published by the Free

+rem Software Foundation; either version 3 of the License, or (at your option)

+rem any later version.

+rem

+rem GNU Make is distributed in the hope that it will be useful, but WITHOUT

+rem ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

+rem FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.

+rem more details.

+rem

+rem You should have received a copy of the GNU General Public License along

+rem with this program.  If not, see <http://www.gnu.org/licenses/>.

+

+echo Configuring MAKE for DJGPP

+

+rem The SmallEnv trick protects against too small environment block,

+rem in which case the values will be truncated and the whole thing

+rem goes awry.  COMMAND.COM will say "Out of environment space", but

+rem many people don't care, so we force them to care by refusing to go.

+

+rem Where is the srcdir?

+set XSRC=.

+if not "%XSRC%"=="." goto SmallEnv

+if "%1%"=="" goto SrcDone

+set XSRC=%1

+if not "%XSRC%"=="%1" goto SmallEnv

+

+:SrcDone

+

+update %XSRC%/configh.dos ./config.h

+

+rem Do they have Make?

+redir -o junk.$$$ -eo make -n -f NUL

+rem REDIR will return 1 if it cannot run Make.

+rem If it can run Make, it will usually return 2,

+rem but 0 is also OK with us.

+if errorlevel 2 goto MakeOk

+if not errorlevel 1 goto MakeOk

+if exist junk.$$$ del junk.$$$

+echo No Make program found--use DOSBUILD.BAT to build Make.

+goto End

+

+rem They do have Make.	Generate the Makefile.

+

+:MakeOk

+del junk.$$$

+update %XSRC%/Makefile.DOS ./Makefile

+echo Done.

+if not "%XSRC%"=="." echo Invoke Make thus: "make srcdir=%XSRC%"

+goto End

+

+:SmallEnv

+echo Your environment is too small.  Please enlarge it and run me again.

+

+:End

+set XRSC=

diff --git a/src/kmk/debug.h b/src/kmk/debug.h
new file mode 100644
index 0000000..e423d90
--- /dev/null
+++ b/src/kmk/debug.h
@@ -0,0 +1,66 @@
+/* Debugging macros and interface.
+Copyright (C) 1999-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#define DB_NONE         (0x000)
+#define DB_BASIC        (0x001)
+#define DB_VERBOSE      (0x002)
+#define DB_JOBS         (0x004)
+#define DB_IMPLICIT     (0x008)
+#define DB_MAKEFILES    (0x100)
+#ifdef KMK
+# define DB_KMK         (0x800)
+#endif 
+
+#define DB_ALL          (0xfff)
+
+extern int db_level;
+
+#ifdef KMK
+
+/* Some extended info for -j and .NOTPARALLEL tracking. */
+extern unsigned int makelevel;
+extern unsigned int job_slots;
+extern unsigned int job_slots_used;
+
+#define DB_HDR()    do { printf ("[%u:%u/%u]", makelevel, job_slots_used, job_slots); } while (0)
+
+#define ISDB(_l)    ((_l)&db_level)
+
+#define DBS(_l,_x)  do{ if(ISDB(_l)) {DB_HDR(); \
+                                      print_spaces (depth); \
+                                      printf _x; fflush (stdout);} }while(0)
+
+#define DBF(_l,_x)  do{ if(ISDB(_l)) {DB_HDR(); \
+                                      print_spaces (depth); \
+                                      printf (_x, file->name); \
+                                      fflush (stdout);} }while(0)
+
+#define DB(_l,_x)   do{ if(ISDB(_l)) {DB_HDR(); printf _x; fflush (stdout);} }while(0)
+
+#else  /* !KMK */
+
+#define ISDB(_l)    ((_l)&db_level)
+
+#define DBS(_l,_x)  do{ if(ISDB(_l)) {print_spaces (depth); \
+                                      printf _x; fflush (stdout);} }while(0)
+
+#define DBF(_l,_x)  do{ if(ISDB(_l)) {print_spaces (depth); \
+                                      printf (_x, file->name); \
+                                      fflush (stdout);} }while(0)
+
+#define DB(_l,_x)   do{ if(ISDB(_l)) {printf _x; fflush (stdout);} }while(0)
+
+#endif /* !KMK */
diff --git a/src/kmk/default.c b/src/kmk/default.c
new file mode 100644
index 0000000..74b0cff
--- /dev/null
+++ b/src/kmk/default.c
@@ -0,0 +1,774 @@
+/* Data base of default implicit rules for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <assert.h>
+
+#include "filedef.h"
+#include "variable.h"
+#include "rule.h"
+#include "dep.h"
+#include "job.h"
+#include "commands.h"
+
+/* Define GCC_IS_NATIVE if gcc is the native development environment on
+   your system (gcc/bison/flex vs cc/yacc/lex).  */
+#if defined(__MSDOS__) || defined(__EMX__)
+# define GCC_IS_NATIVE
+#endif
+
+
+/* This is the default list of suffixes for suffix rules.
+   '.s' must come last, so that a '.o' file will be made from
+   a '.c' or '.p' or ... file rather than from a .s file.  */
+
+static char default_suffixes[]
+#ifndef CONFIG_NO_DEFAULT_SUFFIXES
+#ifdef VMS
+  /* VMS should include all UNIX/POSIX + some VMS extensions */
+  = ".out .exe .a .olb .hlb .tlb .mlb .ln .o .obj .c .cxx .cc .cpp .pas .p \
+.for .f .r .y .l .ym .yl .mar .s .ss .i .ii .mod .sym .def .h .info .dvi \
+.tex .texinfo .texi .txinfo .mem .hlp .brn .rnh .rno .rnt .rnx .w .ch .cweb \
+.web .com .sh .elc .el";
+#elif defined(__EMX__)
+  = ".out .a .ln .o .c .cc .C .cpp .p .f .F .m .r .y .l .ym .yl .s .S \
+.mod .sym .def .h .info .dvi .tex .texinfo .texi .txinfo \
+.w .ch .web .sh .elc .el .obj .exe .dll .lib";
+#else
+  = ".out .a .ln .o .c .cc .C .cpp .p .f .F .m .r .y .l .ym .yl .s .S \
+.mod .sym .def .h .info .dvi .tex .texinfo .texi .txinfo \
+.w .ch .web .sh .elc .el";
+#endif
+#else  /* CONFIG_NO_DEFAULT_SUFFIXES */
+ = "";
+#endif /* CONFIG_NO_DEFAULT_SUFFIXES */
+
+static struct pspec default_pattern_rules[] =
+  {
+#ifndef CONFIG_NO_DEFAULT_PATTERN_RULES
+#ifdef VMS
+    { "(%)", "%",
+        "@if f$$search(\"$@\") .eqs. \"\" then $(LIBRARY)/CREATE/"
+         "$(or "
+          "$(patsubst %,TEXT,$(filter %.tlb %.TLB,$@)),"
+          "$(patsubst %,HELP,$(filter %.hlb %.HLB,$@)),"
+          "$(patsubst %,MACRO,$(filter %.mlb %.MLB,$@)),"
+          "$(and "
+           "$(patsubst %,SHARE,$(filter %.olb %.OLB,$@)),"
+           "$(patsubst %,SHARE,$(filter %.exe %.EXE,$<))),"
+          "OBJECT)"
+         " $@\n"
+        "$(AR) $(ARFLAGS) $@ $<" },
+
+#else
+    { "(%)", "%",
+        "$(AR) $(ARFLAGS) $@ $<" },
+#endif
+    /* The X.out rules are only in BSD's default set because
+       BSD Make has no null-suffix rules, so 'foo.out' and
+       'foo' are the same thing.  */
+#ifdef VMS
+    { "%.exe", "%",
+        "$(CP) $< $@" },
+
+#endif
+    { "%.out", "%",
+        "@rm -f $@ \n cp $< $@" },
+
+    /* Syntax is "ctangle foo.w foo.ch foo.c".  */
+    { "%.c", "%.w %.ch",
+        "$(CTANGLE) $^ $@" },
+    { "%.tex", "%.w %.ch",
+        "$(CWEAVE) $^ $@" },
+#endif /* !CONFIG_NO_DEFAULT_PATTERN_RULES */
+    { 0, 0, 0 }
+  };
+
+static struct pspec default_terminal_rules[] =
+  {
+#ifndef CONFIG_NO_DEFAULT_TERMINAL_RULES
+#ifdef VMS
+
+    /* RCS.  */
+    { "%", "%$$5lv", /* Multinet style */
+        "if f$$search(\"$@\") .nes. \"\" then +$(CHECKOUT,v)" },
+    { "%", "[.$$rcs]%$$5lv", /* Multinet style */
+        "if f$$search(\"$@\") .nes. \"\" then +$(CHECKOUT,v)" },
+    { "%", "%_v", /* Normal style */
+        "if f$$search(\"$@\") .nes. \"\" then +$(CHECKOUT,v)" },
+    { "%", "[.rcs]%_v", /* Normal style */
+        "if f$$search(\"$@\") .nes. \"\" then +$(CHECKOUT,v)" },
+
+    /* SCCS.  */
+        /* ain't no SCCS on vms */
+
+#else
+    /* RCS.  */
+    { "%", "%,v",
+        "$(CHECKOUT,v)" },
+    { "%", "RCS/%,v",
+        "$(CHECKOUT,v)" },
+    { "%", "RCS/%",
+        "$(CHECKOUT,v)" },
+
+    /* SCCS.  */
+    { "%", "s.%",
+        "$(GET) $(GFLAGS) $(SCCS_OUTPUT_OPTION) $<" },
+    { "%", "SCCS/s.%",
+        "$(GET) $(GFLAGS) $(SCCS_OUTPUT_OPTION) $<" },
+#endif /* !VMS */
+#endif /* !CONFIG_NO_DEFAULT_TERMINAL_RULES */
+    { 0, 0, 0 }
+  };
+
+static const char *default_suffix_rules[] =
+  {
+#ifndef CONFIG_NO_DEFAULT_SUFFIX_RULES
+#ifdef VMS
+    ".o",
+    "$(LINK.obj) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".obj",
+    "$(LINK.obj) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".s",
+    "$(LINK.s) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".S",
+    "$(LINK.S) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".c",
+    "$(LINK.c) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".cc",
+    "$(LINK.cc) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".C",
+    "$(LINK.C) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".cpp",
+    "$(LINK.cpp) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".f",
+    "$(LINK.f) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".m",
+    "$(LINK.m) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".p",
+    "$(LINK.p) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".F",
+    "$(LINK.F) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".r",
+    "$(LINK.r) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".mod",
+    "$(COMPILE.mod) -o $@ -e $@ $^",
+
+    ".def.sym",
+    "$(COMPILE.def) -o $@ $<",
+
+    ".sh",
+    "copy $< >$@",
+
+    ".obj.exe",
+    "$(LINK.obj) $^ $(LOADLIBES) $(LDLIBS) $(CRT0) /exe=$@",
+    ".mar.exe",
+    "$(COMPILE.mar) $^ \n $(LINK.obj) $(subst .mar,.obj,$^) $(LOADLIBES) $(LDLIBS) $(CRT0) /exe=$@",
+    ".s.o",
+    "$(COMPILE.s) -o $@ $<",
+    ".s.exe",
+    "$(COMPILE.s) $^ \n $(LINK.obj) $(subst .s,.obj,$^) $(LOADLIBES) $(LDLIBS) $(CRT0) /exe=$@",
+    ".c.exe",
+    "$(COMPILE.c) $^ \n $(LINK.obj) $(subst .c,.obj,$^) $(LOADLIBES) $(LDLIBS) $(CRT0) /exe=$@",
+    ".cc.exe",
+#ifdef GCC_IS_NATIVE
+    "$(COMPILE.cc) $^ \n $(LINK.obj) $(CXXSTARTUP),sys$$disk:[]$(subst .cc,.obj,$^) $(LOADLIBES) $(LXLIBS) $(LDLIBS) $(CXXRT0) /exe=$@",
+#else
+    "$(COMPILE.cc) $^ \n $(CXXLINK.obj) $(subst .cc,.obj,$^) $(LOADLIBES) $(LXLIBS) $(LDLIBS) $(CXXRT0) /exe=$@",
+    ".cxx.exe",
+    "$(COMPILE.cxx) $^ \n $(CXXLINK.obj) $(subst .cxx,.obj,$^) $(LOADLIBES) $(LXLIBS) $(LDLIBS) $(CXXRT0) /exe=$@",
+#endif
+    ".for.exe",
+    "$(COMPILE.for) $^ \n $(LINK.obj) $(subst .for,.obj,$^) $(LOADLIBES) $(LDLIBS) /exe=$@",
+    ".pas.exe",
+    "$(COMPILE.pas) $^ \n $(LINK.obj) $(subst .pas,.obj,$^) $(LOADLIBES) $(LDLIBS) /exe=$@",
+
+    ".com",
+    "copy $< >$@",
+
+    ".mar.obj",
+    "$(COMPILE.mar) /obj=$@ $<",
+    ".s.obj",
+    "$(COMPILE.s) /obj=$@ $<",
+    ".ss.obj",
+    "$(COMPILE.s) /obj=$@ $<",
+    ".c.i",
+    "$(COMPILE.c)/prep /list=$@ $<",
+    ".c.s",
+    "$(COMPILE.c)/noobj/machine /list=$@ $<",
+    ".i.s",
+    "$(COMPILE.c)/noprep/noobj/machine /list=$@ $<",
+    ".c.obj",
+    "$(COMPILE.c) /obj=$@ $<",
+    ".c.o",
+    "$(COMPILE.c) /obj=$@ $<",
+    ".cc.ii",
+    "$(COMPILE.cc)/prep /list=$@ $<",
+    ".cc.ss",
+    "$(COMPILE.cc)/noobj/machine /list=$@ $<",
+    ".ii.ss",
+    "$(COMPILE.cc)/noprep/noobj/machine /list=$@ $<",
+    ".cc.obj",
+    "$(COMPILE.cc) /obj=$@ $<",
+    ".cc.o",
+    "$(COMPILE.cc) /obj=$@ $<",
+    ".cxx.obj",
+    "$(COMPILE.cxx) /obj=$@ $<",
+    ".cxx.o",
+    "$(COMPILE.cxx) /obj=$@ $<",
+    ".for.obj",
+    "$(COMPILE.for) /obj=$@ $<",
+    ".for.o",
+    "$(COMPILE.for) /obj=$@ $<",
+    ".pas.obj",
+    "$(COMPILE.pas) /obj=$@ $<",
+    ".pas.o",
+    "$(COMPILE.pas) /obj=$@ $<",
+
+    ".y.c",
+    "$(YACC.y) $< \n rename y_tab.c $@",
+    ".l.c",
+    "$(LEX.l) $< \n rename lexyy.c $@",
+
+    ".texinfo.info",
+    "$(MAKEINFO) $<",
+
+    ".tex.dvi",
+    "$(TEX) $<",
+
+    ".cpp.o",
+    "$(COMPILE.cpp) $(OUTPUT_OPTION) $<",
+    ".f.o",
+    "$(COMPILE.f) $(OUTPUT_OPTION) $<",
+    ".m.o",
+    "$(COMPILE.m) $(OUTPUT_OPTION) $<",
+    ".p.o",
+    "$(COMPILE.p) $(OUTPUT_OPTION) $<",
+    ".r.o",
+    "$(COMPILE.r) $(OUTPUT_OPTION) $<",
+    ".mod.o",
+    "$(COMPILE.mod) -o $@ $<",
+
+    ".c.ln",
+    "$(LINT.c) -C$* $<",
+    ".y.ln",
+    "$(YACC.y) $< \n rename y_tab.c $@",
+
+    ".l.ln",
+    "@$(RM) $*.c\n $(LEX.l) $< > $*.c\n$(LINT.c) -i $*.c -o $@\n $(RM) $*.c",
+
+#else /* ! VMS */
+
+    ".o",
+    "$(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".s",
+    "$(LINK.s) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".S",
+    "$(LINK.S) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".c",
+    "$(LINK.c) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".cc",
+    "$(LINK.cc) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".C",
+    "$(LINK.C) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".cpp",
+    "$(LINK.cpp) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".f",
+    "$(LINK.f) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".m",
+    "$(LINK.m) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".p",
+    "$(LINK.p) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".F",
+    "$(LINK.F) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".r",
+    "$(LINK.r) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".mod",
+    "$(COMPILE.mod) -o $@ -e $@ $^",
+
+    ".def.sym",
+    "$(COMPILE.def) -o $@ $<",
+
+    ".sh",
+    "cat $< >$@ \n chmod a+x $@",
+
+    ".s.o",
+    "$(COMPILE.s) -o $@ $<",
+    ".S.o",
+    "$(COMPILE.S) -o $@ $<",
+    ".c.o",
+    "$(COMPILE.c) $(OUTPUT_OPTION) $<",
+    ".cc.o",
+    "$(COMPILE.cc) $(OUTPUT_OPTION) $<",
+    ".C.o",
+    "$(COMPILE.C) $(OUTPUT_OPTION) $<",
+    ".cpp.o",
+    "$(COMPILE.cpp) $(OUTPUT_OPTION) $<",
+    ".f.o",
+    "$(COMPILE.f) $(OUTPUT_OPTION) $<",
+    ".m.o",
+    "$(COMPILE.m) $(OUTPUT_OPTION) $<",
+    ".p.o",
+    "$(COMPILE.p) $(OUTPUT_OPTION) $<",
+    ".F.o",
+    "$(COMPILE.F) $(OUTPUT_OPTION) $<",
+    ".r.o",
+    "$(COMPILE.r) $(OUTPUT_OPTION) $<",
+    ".mod.o",
+    "$(COMPILE.mod) -o $@ $<",
+
+    ".c.ln",
+    "$(LINT.c) -C$* $<",
+    ".y.ln",
+#ifndef __MSDOS__
+    "$(YACC.y) $< \n $(LINT.c) -C$* y.tab.c \n $(RM) y.tab.c",
+#else
+    "$(YACC.y) $< \n $(LINT.c) -C$* y_tab.c \n $(RM) y_tab.c",
+#endif
+    ".l.ln",
+    "@$(RM) $*.c\n $(LEX.l) $< > $*.c\n$(LINT.c) -i $*.c -o $@\n $(RM) $*.c",
+
+    ".y.c",
+#ifndef __MSDOS__
+    "$(YACC.y) $< \n mv -f y.tab.c $@",
+#else
+    "$(YACC.y) $< \n mv -f y_tab.c $@",
+#endif
+    ".l.c",
+    "@$(RM) $@ \n $(LEX.l) $< > $@",
+    ".ym.m",
+    "$(YACC.m) $< \n mv -f y.tab.c $@",
+    ".lm.m",
+    "@$(RM) $@ \n $(LEX.m) $< > $@",
+
+    ".F.f",
+    "$(PREPROCESS.F) $(OUTPUT_OPTION) $<",
+    ".r.f",
+    "$(PREPROCESS.r) $(OUTPUT_OPTION) $<",
+
+    /* This might actually make lex.yy.c if there's no %R% directive in $*.l,
+       but in that case why were you trying to make $*.r anyway?  */
+    ".l.r",
+    "$(LEX.l) $< > $@ \n mv -f lex.yy.r $@",
+
+    ".S.s",
+    "$(PREPROCESS.S) $< > $@",
+
+    ".texinfo.info",
+    "$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@",
+
+    ".texi.info",
+    "$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@",
+
+    ".txinfo.info",
+    "$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@",
+
+    ".tex.dvi",
+    "$(TEX) $<",
+
+    ".texinfo.dvi",
+    "$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<",
+
+    ".texi.dvi",
+    "$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<",
+
+    ".txinfo.dvi",
+    "$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<",
+
+    ".w.c",
+    "$(CTANGLE) $< - $@",       /* The '-' says there is no '.ch' file.  */
+
+    ".web.p",
+    "$(TANGLE) $<",
+
+    ".w.tex",
+    "$(CWEAVE) $< - $@",        /* The '-' says there is no '.ch' file.  */
+
+    ".web.tex",
+    "$(WEAVE) $<",
+
+#endif /* !VMS */
+#endif /* !CONFIG_NO_DEFAULT_SUFFIX_RULES */
+    0, 0,
+  };
+
+static const char *default_variables[] =
+  {
+#ifndef CONFIG_NO_DEFAULT_VARIABLES
+#ifdef VMS
+#ifdef __ALPHA
+    "ARCH", "ALPHA",
+#endif
+#ifdef __ia64
+    "ARCH", "IA64",
+#endif
+#ifdef __VAX
+    "ARCH", "VAX",
+#endif
+    "AR", "library",
+    "LIBRARY", "library",
+    "ARFLAGS", "/replace",
+    "AS", "macro",
+    "MACRO", "macro",
+#ifdef GCC_IS_NATIVE
+    "CC", "gcc",
+#else
+    "CC", "cc",
+#endif
+    "CD", "builtin_cd",
+    "ECHO", "builtin_echo",
+#ifdef GCC_IS_NATIVE
+    "C++", "gcc/plus",
+    "CXX", "gcc/plus",
+#else
+    "C++", "cxx",
+    "CXX", "cxx",
+#ifndef __ia64
+    "CXXLD", "cxxlink",
+    "CXXLINK", "cxxlink",
+#else
+    /* CXXLINK is not used on VMS/IA64 */
+    "CXXLD", "link",
+    "CXXLINK", "link",
+#endif
+#endif
+    "CO", "co",
+    "CPP", "$(CC) /preprocess_only",
+    "FC", "fortran",
+    /* System V uses these, so explicit rules using them should work.
+       However, there is no way to make implicit rules use them and FC.  */
+    "F77", "$(FC)",
+    "F77FLAGS", "$(FFLAGS)",
+    "LD", "link",
+    "LEX", "lex",
+    "PC", "pascal",
+    "YACC", "bison/yacc",
+    "YFLAGS", "/Define/Verbose",
+    "BISON", "bison",
+    "MAKEINFO", "makeinfo",
+    "TEX", "tex",
+    "TEXINDEX", "texindex",
+
+    "RM", "delete/nolog",
+
+    "CSTARTUP", "",
+#ifdef GCC_IS_NATIVE
+    "CRT0", ",sys$$library:vaxcrtl.olb/lib,gnu_cc_library:crt0.obj",
+    "CXXSTARTUP", "gnu_cc_library:crtbegin.obj",
+    "CXXRT0", ",sys$$library:vaxcrtl.olb/lib,gnu_cc_library:crtend.obj,gnu_cc_library:gxx_main.obj",
+    "LXLIBS", ",gnu_cc_library:libstdcxx.olb/lib,gnu_cc_library:libgccplus.olb/lib",
+    "LDLIBS", ",gnu_cc_library:libgcc.olb/lib",
+#else
+    "CRT0", "",
+    "CXXSTARTUP", "",
+    "CXXRT0", "",
+    "LXLIBS", "",
+    "LDLIBS", "",
+#endif
+
+    "LINK.o", "$(LD) $(LDFLAGS)",
+    "LINK.obj", "$(LD) $(LDFLAGS)",
+#ifndef GCC_IS_NATIVE
+    "CXXLINK.obj", "$(CXXLD) $(LDFLAGS)",
+    "COMPILE.cxx", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+#endif
+    "COMPILE.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+    "LINK.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+    "COMPILE.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.cc", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+    "COMPILE.C", "$(COMPILE.cc)",
+    "COMPILE.cpp", "$(COMPILE.cc)",
+    "LINK.C", "$(LINK.cc)",
+    "LINK.cpp", "$(LINK.cc)",
+    "YACC.y", "$(YACC) $(YFLAGS)",
+    "LEX.l", "$(LEX) $(LFLAGS)",
+    "YACC.m", "$(YACC) $(YFLAGS)",
+    "LEX.m", "$(LEX) $(LFLAGS) -t",
+    "COMPILE.for", "$(FC) $(FFLAGS) $(TARGET_ARCH)",
+    "COMPILE.f", "$(FC) $(FFLAGS) $(TARGET_ARCH) -c",
+    "LINK.f", "$(FC) $(FFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.r", "$(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -c",
+    "LINK.r", "$(FC) $(FFLAGS) $(RFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.pas", "$(PC) $(PFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+    "COMPILE.def", "$(M2C) $(M2FLAGS) $(DEFFLAGS) $(TARGET_ARCH)",
+    "COMPILE.mod", "$(M2C) $(M2FLAGS) $(MODFLAGS) $(TARGET_ARCH)",
+    "COMPILE.p", "$(PC) $(PFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.p", "$(PC) $(PFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.mar", "$(MACRO) $(MACROFLAGS)",
+    "COMPILE.s", "$(AS) $(ASFLAGS) $(TARGET_MACH)",
+    "LINK.S", "$(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_MACH)",
+    "COMPILE.S", "$(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_MACH) -c",
+    "PREPROCESS.S", "$(CC) -E $(CPPFLAGS)",
+    "PREPROCESS.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -F",
+    "PREPROCESS.r", "$(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -F",
+    "LINT.c", "$(LINT) $(LINTFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+
+    "MV", "rename/new_version",
+    "CP", "copy",
+    ".LIBPATTERNS", "%.olb lib%.a",
+
+#else /* !VMS */
+
+    "AR", "ar",
+    "ARFLAGS", "rv",
+    "AS", "as",
+#ifdef GCC_IS_NATIVE
+    "CC", "gcc",
+# ifdef __MSDOS__
+    "CXX", "gpp",       /* g++ is an invalid name on MSDOS */
+# else
+    "CXX", "gcc",
+# endif /* __MSDOS__ */
+    "OBJC", "gcc",
+#else
+    "CC", "cc",
+    "CXX", "g++",
+    "OBJC", "cc",
+#endif
+
+    /* This expands to $(CO) $(COFLAGS) $< $@ if $@ does not exist,
+       and to the empty string if $@ does exist.  */
+    "CHECKOUT,v", "+$(if $(wildcard $@),,$(CO) $(COFLAGS) $< $@)",
+    "CO", "co",
+    "COFLAGS", "",
+
+    "CPP", "$(CC) -E",
+#ifdef  CRAY
+    "CF77PPFLAGS", "-P",
+    "CF77PP", "/lib/cpp",
+    "CFT", "cft77",
+    "CF", "cf77",
+    "FC", "$(CF)",
+#else   /* Not CRAY.  */
+#ifdef  _IBMR2
+    "FC", "xlf",
+#else
+#ifdef  __convex__
+    "FC", "fc",
+#else
+    "FC", "f77",
+#endif /* __convex__ */
+#endif /* _IBMR2 */
+    /* System V uses these, so explicit rules using them should work.
+       However, there is no way to make implicit rules use them and FC.  */
+    "F77", "$(FC)",
+    "F77FLAGS", "$(FFLAGS)",
+#endif  /* Cray.  */
+    "GET", SCCS_GET,
+    "LD", "ld",
+#ifdef GCC_IS_NATIVE
+    "LEX", "flex",
+#else
+    "LEX", "lex",
+#endif
+    "LINT", "lint",
+    "M2C", "m2c",
+#ifdef  pyr
+    "PC", "pascal",
+#else
+#ifdef  CRAY
+    "PC", "PASCAL",
+    "SEGLDR", "segldr",
+#else
+    "PC", "pc",
+#endif  /* CRAY.  */
+#endif  /* pyr.  */
+#ifdef GCC_IS_NATIVE
+    "YACC", "bison -y",
+#else
+    "YACC", "yacc",     /* Or "bison -y"  */
+#endif
+    "MAKEINFO", "makeinfo",
+    "TEX", "tex",
+    "TEXI2DVI", "texi2dvi",
+    "WEAVE", "weave",
+    "CWEAVE", "cweave",
+    "TANGLE", "tangle",
+    "CTANGLE", "ctangle",
+
+    "RM", "rm -f",
+
+    "LINK.o", "$(CC) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.cc", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+#ifndef HAVE_CASE_INSENSITIVE_FS
+    /* On case-insensitive filesystems, treat *.C files as *.c files,
+       to avoid erroneously compiling C sources as C++, which will
+       probably fail.  */
+    "COMPILE.C", "$(COMPILE.cc)",
+#else
+    "COMPILE.C", "$(COMPILE.c)",
+#endif
+    "COMPILE.cpp", "$(COMPILE.cc)",
+    "LINK.cc", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+#ifndef HAVE_CASE_INSENSITIVE_FS
+    "LINK.C", "$(LINK.cc)",
+#else
+    "LINK.C", "$(LINK.c)",
+#endif
+    "LINK.cpp", "$(LINK.cc)",
+    "YACC.y", "$(YACC) $(YFLAGS)",
+    "LEX.l", "$(LEX) $(LFLAGS) -t",
+    "YACC.m", "$(YACC) $(YFLAGS)",
+    "LEX.m", "$(LEX) $(LFLAGS) -t",
+    "COMPILE.f", "$(FC) $(FFLAGS) $(TARGET_ARCH) -c",
+    "LINK.f", "$(FC) $(FFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.r", "$(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -c",
+    "LINK.r", "$(FC) $(FFLAGS) $(RFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.def", "$(M2C) $(M2FLAGS) $(DEFFLAGS) $(TARGET_ARCH)",
+    "COMPILE.mod", "$(M2C) $(M2FLAGS) $(MODFLAGS) $(TARGET_ARCH)",
+    "COMPILE.p", "$(PC) $(PFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.p", "$(PC) $(PFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "LINK.s", "$(CC) $(ASFLAGS) $(LDFLAGS) $(TARGET_MACH)",
+    "COMPILE.s", "$(AS) $(ASFLAGS) $(TARGET_MACH)",
+    "LINK.S", "$(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_MACH)",
+    "COMPILE.S", "$(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_MACH) -c",
+    "PREPROCESS.S", "$(CC) -E $(CPPFLAGS)",
+    "PREPROCESS.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -F",
+    "PREPROCESS.r", "$(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -F",
+    "LINT.c", "$(LINT) $(LINTFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+
+#ifndef NO_MINUS_C_MINUS_O
+    "OUTPUT_OPTION", "-o $@",
+#endif
+
+#ifdef  SCCS_GET_MINUS_G
+    "SCCS_OUTPUT_OPTION", "-G$@",
+#endif
+
+#if defined(_AMIGA)
+    ".LIBPATTERNS", "%.lib",
+#elif defined(__MSDOS__)
+    ".LIBPATTERNS", "lib%.a $(DJDIR)/lib/lib%.a",
+#elif defined(__APPLE__)
+    ".LIBPATTERNS", "lib%.dylib lib%.a",
+#elif defined(__CYGWIN__) || defined(WINDOWS32)
+    ".LIBPATTERNS", "lib%.dll.a %.dll.a lib%.a %.lib lib%.dll %.dll",
+#else
+    ".LIBPATTERNS", "lib%.so lib%.a",
+#endif
+
+#endif /* !VMS */
+#endif /* !CONFIG_NO_DEFAULT_VARIABLES */
+    /* Make this assignment to avoid undefined variable warnings.  */
+    "GNUMAKEFLAGS", "",
+    0, 0
+  };
+
+/* Set up the default .SUFFIXES list.  */
+
+void
+set_default_suffixes (void)
+{
+  suffix_file = enter_file (strcache_add (".SUFFIXES"));
+  suffix_file->builtin = 1;
+
+  if (no_builtin_rules_flag)
+    define_variable_cname ("SUFFIXES", "", o_default, 0);
+  else
+    {
+      struct dep *d;
+      const char *p = default_suffixes;
+      suffix_file->deps = enter_prereqs (PARSE_SIMPLE_SEQ ((char **)&p, struct dep),
+                                         NULL);
+      for (d = suffix_file->deps; d; d = d->next)
+        d->file->builtin = 1;
+
+      define_variable_cname ("SUFFIXES", default_suffixes, o_default, 0);
+    }
+}
+
+/* Enter the default suffix rules as file rules.  This used to be done in
+   install_default_implicit_rules, but that loses because we want the
+   suffix rules installed before reading makefiles, and the pattern rules
+   installed after.  */
+
+void
+install_default_suffix_rules (void)
+{
+  const char **s;
+
+  if (no_builtin_rules_flag)
+    return;
+
+  for (s = default_suffix_rules; *s != 0; s += 2)
+    {
+      struct file *f = enter_file (strcache_add (s[0]));
+      /* This function should run before any makefile is parsed.  */
+      assert (f->cmds == 0);
+#ifndef CONFIG_WITH_ALLOC_CACHES
+      f->cmds = xmalloc (sizeof (struct commands));
+#else
+      f->cmds = alloccache_alloc (&commands_cache);
+#endif
+      f->cmds->fileinfo.filenm = 0;
+      f->cmds->commands = xstrdup (s[1]);
+      f->cmds->command_lines = 0;
+      f->cmds->recipe_prefix = RECIPEPREFIX_DEFAULT;
+#ifdef CONFIG_WITH_MEMORY_OPTIMIZATIONS
+      f->cmds->refs = 1000;
+#endif
+      f->builtin = 1;
+    }
+}
+
+
+/* Install the default pattern rules.  */
+
+void
+install_default_implicit_rules (void)
+{
+  struct pspec *p;
+
+  if (no_builtin_rules_flag)
+    return;
+
+  for (p = default_pattern_rules; p->target != 0; ++p)
+    install_pattern_rule (p, 0);
+
+  for (p = default_terminal_rules; p->target != 0; ++p)
+    install_pattern_rule (p, 1);
+}
+
+void
+define_default_variables (void)
+{
+  const char **s;
+
+  if (no_builtin_variables_flag)
+    return;
+
+  for (s = default_variables; *s != 0; s += 2)
+    define_variable (s[0], strlen (s[0]), s[1], o_default, 1);
+}
+
+void
+undefine_default_variables (void)
+{
+  const char **s;
+
+  for (s = default_variables; *s != 0; s += 2)
+    undefine_variable_global (s[0], strlen (s[0]), o_default);
+}
diff --git a/src/kmk/dep.h b/src/kmk/dep.h
new file mode 100644
index 0000000..d53e8ef
--- /dev/null
+++ b/src/kmk/dep.h
@@ -0,0 +1,184 @@
+/* Definitions of dependency data structures for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Structure used in chains of names, for parsing and globbing.  */
+
+#define NAMESEQ(_t)     \
+    _t *next;           \
+    const char *name
+
+struct nameseq
+  {
+    NAMESEQ (struct nameseq);
+  };
+
+/* Flag bits for the second argument to 'read_makefile'.
+   These flags are saved in the 'flags' field of each
+   'struct goaldep' in the chain returned by 'read_all_makefiles'.  */
+
+#define RM_NO_DEFAULT_GOAL      (1 << 0) /* Do not set default goal.  */
+#define RM_INCLUDED             (1 << 1) /* Search makefile search path.  */
+#define RM_DONTCARE             (1 << 2) /* No error if it doesn't exist.  */
+#define RM_NO_TILDE             (1 << 3) /* Don't expand ~ in file name.  */
+#define RM_NOFLAG               0
+
+/* Structure representing one dependency of a file.
+   Each struct file's 'deps' points to a chain of these, through 'next'.
+   'stem' is the stem for this dep line of static pattern rule or NULL.  */
+
+#ifndef CONFIG_WITH_INCLUDEDEP
+#define DEP(_t)                                 \
+    NAMESEQ (_t);                               \
+    struct file *file;                          \
+    const char *stem;                           \
+    unsigned short flags : 8;                   \
+    unsigned short changed : 1;                 \
+    unsigned short ignore_mtime : 1;            \
+    unsigned short staticpattern : 1;           \
+    unsigned short need_2nd_expansion : 1
+#else
+# define DEP(_t)                                \
+    NAMESEQ (_t);                               \
+    struct file *file;                          \
+    const char *stem;                           \
+    unsigned short flags : 8;                   \
+    unsigned short changed : 1;                 \
+    unsigned short ignore_mtime : 1;            \
+    unsigned short staticpattern : 1;           \
+    unsigned short need_2nd_expansion : 1;      \
+    unsigned short includedep : 1
+#endif
+
+struct dep
+  {
+    DEP (struct dep);
+  };
+
+/* Structure representing one goal.
+   The goals to be built constitute a chain of these, chained through 'next'.
+   'stem' is not used, but it's simpler to include and ignore it.  */
+
+struct goaldep
+  {
+    DEP (struct goaldep);
+    unsigned short error;
+    floc floc;
+  };
+
+/* Options for parsing lists of filenames.  */
+
+#define PARSEFS_NONE    0x0000
+#define PARSEFS_NOSTRIP 0x0001
+#define PARSEFS_NOAR    0x0002
+#define PARSEFS_NOGLOB  0x0004
+#define PARSEFS_EXISTS  0x0008
+#define PARSEFS_NOCACHE 0x0010
+
+#ifndef CONFIG_WITH_ALLOC_CACHES
+#define PARSE_FILE_SEQ(_s,_t,_c,_p,_f) \
+            (_t *)parse_file_seq ((_s),sizeof (_t),(_c),(_p),(_f))
+#define PARSE_SIMPLE_SEQ(_s,_t) \
+            (_t *)parse_file_seq ((_s),sizeof (_t),MAP_NUL,NULL,PARSEFS_NONE)
+#else
+# define PARSE_FILE_SEQ(_s,_t,_c,_p,_f) \
+            (_t *)parse_file_seq ((_s),sizeof (_t),(_c),(_p),(_f), \
+                                  &PARSE_FILE_SEQ_IGNORE_ ## _t ## _cache)
+# define PARSE_SIMPLE_SEQ(_s,_t) \
+            (_t *)parse_file_seq ((_s),sizeof (_t),MAP_NUL,NULL,PARSEFS_NONE, \
+                                  &PARSE_FILE_SEQ_IGNORE_ ## _t ## _cache)
+# define PARSE_FILE_SEQ_IGNORE_struct
+#endif
+
+
+#ifdef VMS
+void *parse_file_seq ();
+#else
+void *parse_file_seq (char **stringp, unsigned int size,
+                      int stopmap, const char *prefix, int flags
+                      IF_WITH_ALLOC_CACHES_PARAM(struct alloccache *cache));
+#endif
+
+char *tilde_expand (const char *name);
+
+#ifndef NO_ARCHIVES
+struct nameseq *ar_glob (const char *arname, const char *member_pattern, unsigned int size);
+#endif
+
+#define dep_name(d)        ((d)->name ? (d)->name : (d)->file->name)
+
+#ifndef CONFIG_WITH_ALLOC_CACHES
+
+#define alloc_seq_elt(_t)   xcalloc (sizeof (_t))
+void free_ns_chain (struct nameseq *n);
+
+#if defined(MAKE_MAINTAINER_MODE) && defined(__GNUC__)
+/* Use inline to get real type-checking.  */
+#define SI static inline
+SI struct nameseq *alloc_ns()      { return alloc_seq_elt (struct nameseq); }
+SI struct dep *alloc_dep()         { return alloc_seq_elt (struct dep); }
+SI struct goaldep *alloc_goaldep() { return alloc_seq_elt (struct goaldep); }
+
+SI void free_ns(struct nameseq *n)      { free (n); }
+SI void free_dep(struct dep *d)         { free_ns ((struct nameseq *)d); }
+SI void free_goaldep(struct goaldep *g) { free_dep ((struct dep *)g); }
+
+SI void free_dep_chain(struct dep *d)      { free_ns_chain((struct nameseq *)d); }
+SI void free_goal_chain(struct goaldep *g) { free_dep_chain((struct dep *)g); }
+#else
+# define alloc_ns()          alloc_seq_elt (struct nameseq)
+# define alloc_dep()         alloc_seq_elt (struct dep)
+# define alloc_goaldep()     alloc_seq_elt (struct goaldep)
+
+# define free_ns(_n)         free (_n)
+# define free_dep(_d)        free_ns (_d)
+# define free_goaldep(_g)    free_dep (_g)
+
+# define free_dep_chain(_d)  free_ns_chain ((struct nameseq *)(_d))
+# define free_goal_chain(_g) free_ns_chain ((struct nameseq *)(_g))
+#endif
+
+#else /* CONFIG_WITH_ALLOC_CACHES */
+
+# include <k/kDefs.h>
+
+K_INLINE struct nameseq *alloc_ns (void)        { return (struct nameseq *)alloccache_calloc (&nameseq_cache); }
+K_INLINE void free_ns (struct nameseq *n)       { alloccache_free (&nameseq_cache, n); }
+void free_ns_chain (struct nameseq *n);
+
+K_INLINE struct dep *alloc_dep (void)           { return (struct dep *)alloccache_calloc (&dep_cache); }
+K_INLINE void free_dep (struct dep *d)          { alloccache_free (&dep_cache, d); }
+void free_dep_chain (struct dep *d);
+
+K_INLINE struct goaldep *alloc_goaldep (void)   { return (struct goaldep *)alloccache_calloc (&goaldep_cache); }
+K_INLINE void free_goaldep (struct goaldep *g)  { alloccache_free (&goaldep_cache, g); }
+void free_goal_chain (struct goaldep *g);
+
+#endif  /* CONFIG_WITH_ALLOC_CACHES */
+
+struct dep *copy_dep_chain (const struct dep *d);
+
+struct goaldep *read_all_makefiles (const char **makefiles);
+void eval_buffer (char *buffer, const floc *floc IF_WITH_VALUE_LENGTH(COMMA char *eos));
+enum update_status update_goal_chain (struct goaldep *goals);
+
+#ifdef CONFIG_WITH_INCLUDEDEP
+/* incdep.c */
+enum incdep_op { incdep_read_it, incdep_queue, incdep_flush };
+void eval_include_dep (const char *name, floc *f, enum incdep_op op);
+void incdep_flush_and_term (void);
+#endif
+
diff --git a/src/kmk/dir-nt-bird.c b/src/kmk/dir-nt-bird.c
new file mode 100644
index 0000000..d690751
--- /dev/null
+++ b/src/kmk/dir-nt-bird.c
@@ -0,0 +1,794 @@
+/* $Id: dir-nt-bird.c 3359 2020-06-05 16:17:17Z bird $ */
+/** @file
+ * Reimplementation of dir.c for NT using kFsCache.
+ *
+ * This should perform better on NT, especially on machines "infected"
+ * by antivirus programs.
+ */
+
+/*
+ * Copyright (c) 2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <Windows.h> /* locking */
+#include "nt/kFsCache.h"
+#include "makeint.h"
+#if defined(KMK) && !defined(__OS2__)
+# include "glob/glob.h"
+#else
+# include <glob.h>
+#endif
+#include <assert.h>
+#include "kmkbuiltin.h"
+#include "kmkbuiltin/err.h"
+
+#include "nt_fullpath.h" /* for the time being - will be implemented here later on. */
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/** User data key indicating that it's an impossible file to make.
+ * See file_impossible() and file_impossible_p(). */
+#define KMK_DIR_NT_IMPOSSIBLE_KEY   (~(KUPTR)7)
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+/**
+ * glob directory stream.
+ */
+typedef struct KMKNTOPENDIR
+{
+    /** Reference to the directory. */
+    PKFSDIR         pDir;
+    /** Index of the next directory entry (child) to return. */
+    KU32            idxNext;
+    /** The structure in which to return the directory entry.   */
+    struct dirent   DirEnt;
+} KMKNTOPENDIR;
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** The cache.*/
+PKFSCACHE   g_pFsCache = NULL;
+/** Number of times dir_cache_invalid_missing was called. */
+static KU32 volatile g_cInvalidates = 0;
+/** Set by dir_cache_volatile_dir to indicate that the user has marked the
+ * volatile parts of the file system with custom revisioning and we only need to
+ * flush these.  This is very handy when using a separate output directory
+ * from the sources.  */
+static KBOOL g_fFsCacheIsUsingCustomRevision = K_FALSE;
+/** The ID of the main thread.  We currently only let it access the cache. */
+static DWORD g_idMainThread = 0;
+
+
+void hash_init_directories(void)
+{
+    g_idMainThread = GetCurrentThreadId();
+    g_pFsCache = kFsCacheCreate(0);
+    if (g_pFsCache)
+        return;
+    fputs("kFsCacheCreate failed!", stderr);
+    exit(9);
+}
+
+
+/**
+ * Checks if @a pszName exists in directory @a pszDir.
+ *
+ * @returns 1 if it does, 0 if it doesn't.
+ *
+ * @param   pszDir      The directory.
+ * @param   pszName     The name.
+ *
+ *                      If empty string, just check if the directory exists.
+ *
+ *                      If NULL, just read the whole cache the directory into
+ *                      the cache (we always do that).
+ */
+int dir_file_exists_p(const char *pszDir, const char *pszName)
+{
+    int             fRc     = 0;
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pDirObj = kFsCacheLookupA(g_pFsCache, pszDir, &enmError);
+    assert(GetCurrentThreadId() == g_idMainThread);
+    if (pDirObj)
+    {
+
+        if (pDirObj->bObjType == KFSOBJ_TYPE_DIR)
+        {
+            if (pszName != 0)
+            {
+                /* Empty filename is just checking out the directory. */
+                if (*pszName == '\0')
+                    fRc = 1;
+                else
+                {
+                    PKFSOBJ pNameObj = kFsCacheLookupRelativeToDirA(g_pFsCache, (PKFSDIR)pDirObj, pszName, strlen(pszName),
+                                                                    0/*fFlags*/, &enmError, NULL);
+                    if (pNameObj)
+                    {
+                        fRc = pNameObj->bObjType == KFSOBJ_TYPE_MISSING;
+                        kFsCacheObjRelease(g_pFsCache, pNameObj);
+                    }
+                }
+            }
+        }
+        kFsCacheObjRelease(g_pFsCache, pDirObj);
+    }
+    return fRc;
+}
+
+
+/**
+ * Checks if a file exists.
+ *
+ * @returns 1 if it does exist, 0 if it doesn't.
+ * @param   pszPath     The path to check out.
+ * @note    Multi-thread safe.
+ */
+int file_exists_p(const char *pszPath)
+{
+    int             fRc;
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pPathObj = kFsCacheLookupA(g_pFsCache, pszPath, &enmError);
+    if (pPathObj)
+    {
+        fRc = pPathObj->bObjType != KFSOBJ_TYPE_MISSING;
+        kFsCacheObjRelease(g_pFsCache, pPathObj);
+    }
+    else
+        fRc = 0;
+    return fRc;
+}
+
+
+/**
+ * Checks if a file exists and is a regular file, given a UTF-16 string.
+ *
+ * @returns 1 if it regular file, 0 if doesn't exist or isn't a file
+ * @param   pwszPath    The UTF-16 path to check out.
+ * @note    Multi-thread safe.
+ */
+int utf16_regular_file_p(const wchar_t *pwszPath)
+{
+    int             fRc;
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pPathObj = kFsCacheLookupW(g_pFsCache, pwszPath, &enmError);
+    if (pPathObj)
+    {
+        fRc = pPathObj->bObjType == KFSOBJ_TYPE_FILE;
+        kFsCacheObjRelease(g_pFsCache, pPathObj);
+    }
+    else
+        fRc = 0;
+    return fRc;
+}
+
+
+/**
+ * Just a way for vpath.c to get a correctly cased path, I think.
+ *
+ * @returns Directory path in string cache.
+ * @param   pszDir      The directory.
+ */
+const char *dir_name(const char *pszDir)
+{
+    char szTmp[MAX_PATH];
+    assert(GetCurrentThreadId() == g_idMainThread);
+    nt_fullpath(pszDir, szTmp, sizeof(szTmp));
+    return strcache_add(szTmp);
+}
+
+
+/**
+ * Makes future file_impossible_p calls return 1 for pszPath.
+ */
+void file_impossible(const char *pszPath)
+{
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pPathObj = kFsCacheLookupA(g_pFsCache, pszPath, &enmError);
+    assert(GetCurrentThreadId() == g_idMainThread);
+    if (pPathObj)
+    {
+        kFsCacheObjAddUserData(g_pFsCache, pPathObj, KMK_DIR_NT_IMPOSSIBLE_KEY, sizeof(KFSUSERDATA));
+        kFsCacheObjRelease(g_pFsCache, pPathObj);
+    }
+}
+
+/**
+ * Makes future file_impossible_p calls return 1 for pszPath.
+ */
+int file_impossible_p(const char *pszPath)
+{
+    int             fRc;
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pPathObj = kFsCacheLookupA(g_pFsCache, pszPath, &enmError);
+    assert(GetCurrentThreadId() == g_idMainThread);
+    if (pPathObj)
+    {
+        fRc = kFsCacheObjGetUserData(g_pFsCache, pPathObj, KMK_DIR_NT_IMPOSSIBLE_KEY) != NULL;
+        kFsCacheObjRelease(g_pFsCache, pPathObj);
+    }
+    else
+        fRc = 0;
+    return fRc;
+}
+
+
+/**
+ * opendir for glob.
+ *
+ * @returns Pointer to DIR like handle, NULL if directory not found.
+ * @param   pszDir              The directory to enumerate.
+ */
+static __ptr_t dir_glob_opendir(const char *pszDir)
+{
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pDirObj = kFsCacheLookupA(g_pFsCache, pszDir, &enmError);
+    assert(GetCurrentThreadId() == g_idMainThread);
+    if (pDirObj)
+    {
+        if (pDirObj->bObjType == KFSOBJ_TYPE_DIR)
+        {
+            if (kFsCacheDirEnsurePopuplated(g_pFsCache, (PKFSDIR)pDirObj, NULL))
+            {
+                KMKNTOPENDIR *pDir = xmalloc(sizeof(*pDir));
+                pDir->pDir    = (PKFSDIR)pDirObj;
+                pDir->idxNext = 0;
+                return pDir;
+            }
+        }
+        kFsCacheObjRelease(g_pFsCache, pDirObj);
+    }
+    return NULL;
+}
+
+
+/**
+ * readdir for glob.
+ *
+ * @returns Pointer to DIR like handle, NULL if directory not found.
+ * @param   pDir                Directory enum handle by dir_glob_opendir.
+ */
+static struct dirent *dir_glob_readdir(__ptr_t pvDir)
+{
+    KMKNTOPENDIR *pDir = (KMKNTOPENDIR *)pvDir;
+    KU32 const    cChildren = pDir->pDir->cChildren;
+    assert(GetCurrentThreadId() == g_idMainThread);
+    while (pDir->idxNext < cChildren)
+    {
+        PKFSOBJ pEntry = pDir->pDir->papChildren[pDir->idxNext++];
+
+        /* Don't return missing objects. */
+        if (pEntry->bObjType != KFSOBJ_TYPE_MISSING)
+        {
+            /* Copy the name that fits, trying to avoid names with spaces.
+               If neither fits, skip the name. */
+            if (   pEntry->cchName < sizeof(pDir->DirEnt.d_name)
+                && (   pEntry->pszShortName == pEntry->pszName
+                    || memchr(pEntry->pszName, ' ', pEntry->cchName) == NULL))
+            {
+                pDir->DirEnt.d_namlen = pEntry->cchName;
+                memcpy(pDir->DirEnt.d_name, pEntry->pszName, pEntry->cchName + 1);
+            }
+            else if (pEntry->cchShortName < sizeof(pDir->DirEnt.d_name))
+            {
+                pDir->DirEnt.d_namlen = pEntry->cchShortName;
+                memcpy(pDir->DirEnt.d_name, pEntry->pszShortName, pEntry->cchShortName + 1);
+            }
+            else
+                continue;
+
+            pDir->DirEnt.d_reclen = offsetof(struct dirent, d_name) + pDir->DirEnt.d_namlen;
+            if (pEntry->bObjType == KFSOBJ_TYPE_DIR)
+                pDir->DirEnt.d_type = DT_DIR;
+            else if (pEntry->bObjType == KFSOBJ_TYPE_FILE)
+                pDir->DirEnt.d_type = DT_REG;
+            else
+                pDir->DirEnt.d_type   = DT_UNKNOWN;
+
+            return &pDir->DirEnt;
+        }
+    }
+
+    /*
+     * Fake the '.' and '..' directories because they're not part of papChildren above.
+     */
+    if (pDir->idxNext < cChildren + 2)
+    {
+        pDir->idxNext++;
+        pDir->DirEnt.d_type    = DT_DIR;
+        pDir->DirEnt.d_namlen  = pDir->idxNext - cChildren;
+        pDir->DirEnt.d_reclen  = offsetof(struct dirent, d_name) + pDir->DirEnt.d_namlen;
+        pDir->DirEnt.d_name[0] = '.';
+        pDir->DirEnt.d_name[1] = '.';
+        pDir->DirEnt.d_name[pDir->DirEnt.d_namlen] = '\0';
+        return &pDir->DirEnt;
+    }
+
+    return NULL;
+}
+
+
+/**
+ * closedir for glob.
+ *
+ * @param   pDir                Directory enum handle by dir_glob_opendir.
+ */
+static void dir_glob_closedir(__ptr_t pvDir)
+{
+    KMKNTOPENDIR *pDir = (KMKNTOPENDIR *)pvDir;
+    assert(GetCurrentThreadId() == g_idMainThread);
+    kFsCacheObjRelease(g_pFsCache, &pDir->pDir->Obj);
+    pDir->pDir = NULL;
+    free(pDir);
+}
+
+
+/**
+ * stat for glob.
+ *
+ * @returns 0 on success, -1 + errno on failure.
+ * @param   pszPath             The path to stat.
+ * @param   pStat               Where to return the info.
+ */
+static int dir_glob_stat(const char *pszPath, struct stat *pStat)
+{
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pPathObj = kFsCacheLookupA(g_pFsCache, pszPath, &enmError);
+    assert(GetCurrentThreadId() == g_idMainThread);
+/** @todo follow symlinks vs. on symlink!   */
+    if (pPathObj)
+    {
+        if (pPathObj->bObjType != KFSOBJ_TYPE_MISSING)
+        {
+            kHlpAssert(pPathObj->fHaveStats); /* currently always true. */
+            *pStat = pPathObj->Stats;
+            kFsCacheObjRelease(g_pFsCache, pPathObj);
+            return 0;
+        }
+        kFsCacheObjRelease(g_pFsCache, pPathObj);
+    }
+    errno = ENOENT;
+    return -1;
+}
+
+
+/**
+ * lstat for glob.
+ *
+ * @returns 0 on success, -1 + errno on failure.
+ * @param   pszPath             The path to stat.
+ * @param   pStat               Where to return the info.
+ */
+static int dir_glob_lstat(const char *pszPath, struct stat *pStat)
+{
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pPathObj = kFsCacheLookupA(g_pFsCache, pszPath, &enmError);
+    assert(GetCurrentThreadId() == g_idMainThread);
+    if (pPathObj)
+    {
+        if (pPathObj->bObjType != KFSOBJ_TYPE_MISSING)
+        {
+            kHlpAssert(pPathObj->fHaveStats); /* currently always true. */
+            *pStat = pPathObj->Stats;
+            kFsCacheObjRelease(g_pFsCache, pPathObj);
+            return 0;
+        }
+        kFsCacheObjRelease(g_pFsCache, pPathObj);
+        errno = ENOENT;
+    }
+    else
+        errno =    enmError == KFSLOOKUPERROR_NOT_DIR
+                || enmError == KFSLOOKUPERROR_PATH_COMP_NOT_DIR
+              ? ENOTDIR : ENOENT;
+
+    return -1;
+}
+
+
+/**
+ * Checks if @a pszDir exists and is a directory.
+ *
+ * @returns 1 if is directory, 0 if isn't or doesn't exists.
+ * @param   pszDir              The alleged directory.
+ */
+static int dir_globl_dir_exists_p(const char *pszDir)
+{
+    int             fRc;
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pDirObj = kFsCacheLookupA(g_pFsCache, pszDir, &enmError);
+    assert(GetCurrentThreadId() == g_idMainThread);
+    if (pDirObj)
+    {
+        fRc = pDirObj->bObjType == KFSOBJ_TYPE_DIR;
+        kFsCacheObjRelease(g_pFsCache, pDirObj);
+    }
+    else
+        fRc = 0;
+    return fRc;
+
+}
+
+
+/**
+ * Sets up pGlob with the necessary callbacks.
+ *
+ * @param   pGlob               Structure to populate.
+ */
+void dir_setup_glob(glob_t *pGlob)
+{
+    assert(GetCurrentThreadId() == g_idMainThread);
+    pGlob->gl_opendir   = dir_glob_opendir;
+    pGlob->gl_readdir   = dir_glob_readdir;
+    pGlob->gl_closedir  = dir_glob_closedir;
+    pGlob->gl_stat      = dir_glob_stat;
+#ifdef __EMX__ /* The FreeBSD implementation actually uses gl_lstat!! */
+    pGlob->gl_lstat     = dir_glob_lstat;
+#else
+    pGlob->gl_exists    = file_exists_p;
+    pGlob->gl_isdir     = dir_globl_dir_exists_p;
+#endif
+}
+
+
+/**
+ * Print statitstics.
+ */
+void print_dir_stats(void)
+{
+    FILE *pOut = stdout;
+    KU32 cMisses;
+
+    fputs("\n"
+          "# NT dir cache stats:\n", pOut);
+    fprintf(pOut, "#  %u objects, taking up %u (%#x) bytes, avg %u bytes\n",
+            g_pFsCache->cObjects, g_pFsCache->cbObjects, g_pFsCache->cbObjects, g_pFsCache->cbObjects / g_pFsCache->cObjects);
+    fprintf(pOut, "#  %u A path hashes, taking up %u (%#x) bytes, avg %u bytes, %u collision\n",
+            g_pFsCache->cAnsiPaths, g_pFsCache->cbAnsiPaths, g_pFsCache->cbAnsiPaths,
+            g_pFsCache->cbAnsiPaths / K_MAX(g_pFsCache->cAnsiPaths, 1), g_pFsCache->cAnsiPathCollisions);
+#ifdef KFSCACHE_CFG_UTF16
+    fprintf(pOut, "#  %u W path hashes, taking up %u (%#x) bytes, avg %u bytes, %u collisions\n",
+            g_pFsCache->cUtf16Paths, g_pFsCache->cbUtf16Paths, g_pFsCache->cbUtf16Paths,
+            g_pFsCache->cbUtf16Paths / K_MAX(g_pFsCache->cUtf16Paths, 1), g_pFsCache->cUtf16PathCollisions);
+#endif
+    fprintf(pOut, "#  %u child hash tables, total of %u entries, %u children inserted, %u collisions\n",
+            g_pFsCache->cChildHashTabs, g_pFsCache->cChildHashEntriesTotal,
+            g_pFsCache->cChildHashed, g_pFsCache->cChildHashCollisions);
+
+    cMisses = g_pFsCache->cLookups - g_pFsCache->cPathHashHits - g_pFsCache->cWalkHits;
+    fprintf(pOut, "#  %u lookups: %u (%" KU64_PRI " %%) path hash hits, %u (%" KU64_PRI "%%) walks hits, %u (%" KU64_PRI "%%) misses\n",
+            g_pFsCache->cLookups,
+            g_pFsCache->cPathHashHits, g_pFsCache->cPathHashHits * (KU64)100 / K_MAX(g_pFsCache->cLookups, 1),
+            g_pFsCache->cWalkHits, g_pFsCache->cWalkHits * (KU64)100 / K_MAX(g_pFsCache->cLookups, 1),
+            cMisses, cMisses * (KU64)100 / K_MAX(g_pFsCache->cLookups, 1));
+    fprintf(pOut, "#  %u child searches, %u (%" KU64_PRI "%%) hash hits\n",
+            g_pFsCache->cChildSearches,
+            g_pFsCache->cChildHashHits, g_pFsCache->cChildHashHits * (KU64)100 / K_MAX(g_pFsCache->cChildSearches, 1));
+}
+
+
+void print_dir_data_base(void)
+{
+    /** @todo. */
+
+}
+
+
+/* duplicated in kWorker.c
+ * Note! Tries avoid to produce a result with spaces since they aren't supported by makefiles.  */
+void nt_fullpath_cached(const char *pszPath, char *pszFull, size_t cbFull)
+{
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pPathObj;
+
+    KFSCACHE_LOCK(g_pFsCache); /* let's start out being careful. */
+
+    pPathObj = kFsCacheLookupA(g_pFsCache, pszPath, &enmError);
+    if (pPathObj)
+    {
+        KSIZE off = pPathObj->cchParent;
+        if (off > 0)
+        {
+            KSIZE offEnd = off + pPathObj->cchName;
+            if (offEnd < cbFull)
+            {
+                PKFSDIR pAncestor;
+
+                pszFull[offEnd] = '\0';
+                memcpy(&pszFull[off], pPathObj->pszName, pPathObj->cchName);
+
+                for (pAncestor = pPathObj->pParent; off > 0; pAncestor = pAncestor->Obj.pParent)
+                {
+                    kHlpAssert(off > 1);
+                    kHlpAssert(pAncestor != NULL);
+                    kHlpAssert(pAncestor->Obj.cchName > 0);
+                    pszFull[--off] = '/';
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                    if (   pAncestor->Obj.pszName == pAncestor->Obj.pszShortName
+                        || memchr(pAncestor->Obj.pszName, ' ', pAncestor->Obj.cchName) == NULL)
+#endif
+                    {
+                        off -= pAncestor->Obj.cchName;
+                        kHlpAssert(pAncestor->Obj.cchParent == off);
+                        memcpy(&pszFull[off], pAncestor->Obj.pszName, pAncestor->Obj.cchName);
+                    }
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                    else
+                    {
+                        /*
+                         * The long name constains a space, so use the alternative name instead.
+                         * Most likely the alternative name differs in length, usually it's shorter,
+                         * so we have to shift the part of the path we've already assembled
+                         * accordingly.
+                         */
+                        KSSIZE cchDelta = (KSSIZE)pAncestor->Obj.cchShortName - (KSSIZE)pAncestor->Obj.cchName;
+                        if (cchDelta != 0)
+                        {
+                            if ((KSIZE)(offEnd + cchDelta) >= cbFull)
+                                goto l_fallback;
+                            memmove(&pszFull[off + cchDelta], &pszFull[off], offEnd + 1 - off);
+                            off    += cchDelta;
+                            offEnd += cchDelta;
+                        }
+                        off -= pAncestor->Obj.cchShortName;
+                        kHlpAssert(pAncestor->Obj.cchParent == off);
+                        memcpy(&pszFull[off], pAncestor->Obj.pszShortName, pAncestor->Obj.cchShortName);
+                    }
+#endif
+                }
+                kFsCacheObjRelease(g_pFsCache, pPathObj);
+                KFSCACHE_UNLOCK(g_pFsCache);
+                return;
+            }
+        }
+        else
+        {
+            if ((size_t)pPathObj->cchName + 1 < cbFull)
+            {
+                /* Assume no spaces here. */
+                memcpy(pszFull, pPathObj->pszName, pPathObj->cchName);
+                pszFull[pPathObj->cchName] = '/';
+                pszFull[pPathObj->cchName + 1] = '\0';
+
+                kFsCacheObjRelease(g_pFsCache, pPathObj);
+                KFSCACHE_UNLOCK(g_pFsCache);
+                return;
+            }
+        }
+
+        /* do fallback. */
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+l_fallback:
+#endif
+        kHlpAssertFailed();
+        kFsCacheObjRelease(g_pFsCache, pPathObj);
+    }
+    KFSCACHE_UNLOCK(g_pFsCache);
+
+    nt_fullpath(pszPath, pszFull, cbFull);
+}
+
+
+/**
+ * Special stat call used by remake.c
+ *
+ * @returns 0 on success, -1 + errno on failure.
+ * @param   pszPath             The path to stat.
+ * @param   pStat               Where to return the mtime field only.
+ */
+int stat_only_mtime(const char *pszPath, struct stat *pStat)
+{
+    /* Currently a little expensive, so just hit the file system once the
+       jobs starts comming in. */
+    assert(GetCurrentThreadId() == g_idMainThread);
+    if (g_cInvalidates == 0)
+    {
+        KFSLOOKUPERROR  enmError;
+        PKFSOBJ         pPathObj = kFsCacheLookupA(g_pFsCache, pszPath, &enmError);
+        if (pPathObj)
+        {
+            if (pPathObj->bObjType != KFSOBJ_TYPE_MISSING)
+            {
+                kHlpAssert(pPathObj->fHaveStats); /* currently always true. */
+                pStat->st_mtime = pPathObj->Stats.st_mtime;
+                kFsCacheObjRelease(g_pFsCache, pPathObj);
+                return 0;
+            }
+
+            kFsCacheObjRelease(g_pFsCache, pPathObj);
+            errno = ENOENT;
+        }
+        else
+            errno =    enmError == KFSLOOKUPERROR_NOT_DIR
+                    || enmError == KFSLOOKUPERROR_PATH_COMP_NOT_DIR
+                  ? ENOTDIR : ENOENT;
+        return -1;
+    }
+    return birdStatModTimeOnly(pszPath, &pStat->st_mtim, 1 /*fFollowLink*/);
+}
+
+/**
+ * Do cache invalidation after a job completes.
+ */
+void dir_cache_invalid_after_job(void)
+{
+    assert(GetCurrentThreadId() == g_idMainThread);
+    g_cInvalidates++;
+    if (g_fFsCacheIsUsingCustomRevision)
+        kFsCacheInvalidateCustomBoth(g_pFsCache);
+    else
+        kFsCacheInvalidateAll(g_pFsCache);
+}
+
+/**
+ * Invalidate the whole directory cache
+ *
+ * Used by $(dircache-ctl invalidate)
+ * @note    Multi-thread safe.
+ */
+void dir_cache_invalid_all(void)
+{
+    g_cInvalidates++;
+    kFsCacheInvalidateAll(g_pFsCache);
+}
+
+/**
+ * Invalidate the whole directory cache and closes all open handles.
+ *
+ * Used by $(dircache-ctl invalidate-and-close-dirs)
+ * @param   including_root      Also close the root directory.
+ * @note    Multi-thread safe.
+ */
+void dir_cache_invalid_all_and_close_dirs(int including_root)
+{
+    g_cInvalidates++;
+    kFsCacheInvalidateAllAndCloseDirs(g_pFsCache, !!including_root);
+}
+
+/**
+ * Invalidate missing bits of the directory cache.
+ *
+ * Used by $(dircache-ctl invalidate-missing)
+ * @note    Multi-thread safe.
+ */
+void dir_cache_invalid_missing(void)
+{
+    g_cInvalidates++;
+    kFsCacheInvalidateAll(g_pFsCache);
+}
+
+/**
+ * Invalidate the volatile bits of the directory cache.
+ *
+ * Used by $(dircache-ctl invalidate-missing)
+ * @note    Multi-thread safe.
+ */
+void dir_cache_invalid_volatile(void)
+{
+    g_cInvalidates++;
+    if (g_fFsCacheIsUsingCustomRevision)
+        kFsCacheInvalidateCustomBoth(g_pFsCache);
+    else
+        kFsCacheInvalidateAll(g_pFsCache);
+}
+
+/**
+ * Used by $(dircache-ctl ) to mark a directory subtree or file as volatile.
+ *
+ * The first call changes the rest of the cache to be considered non-volatile.
+ *
+ * @returns 0 on success, -1 on failure.
+ * @param   pszDir      The directory (or file for what that is worth).
+ */
+int dir_cache_volatile_dir(const char *pszDir)
+{
+    KFSLOOKUPERROR enmError;
+    PKFSOBJ pObj = kFsCacheLookupA(g_pFsCache, pszDir, &enmError);
+    assert(GetCurrentThreadId() == g_idMainThread);
+    if (pObj)
+    {
+        KBOOL fRc = kFsCacheSetupCustomRevisionForTree(g_pFsCache, pObj);
+        kFsCacheObjRelease(g_pFsCache, pObj);
+        if (fRc)
+        {
+            g_fFsCacheIsUsingCustomRevision = K_TRUE;
+            return 0;
+        }
+        OS(error, reading_file, "failed to mark '%s' as volatile", pszDir);
+    }
+    else
+        OS(error, reading_file, "failed to mark '%s' as volatile (not found)", pszDir);
+    return -1;
+}
+
+/**
+ * Invalidates a deleted directory so the cache can close handles to it.
+ *
+ * Used by kmk_builtin_rm and kmk_builtin_rmdir.
+ *
+ * @returns 0 on success, -1 on failure.
+ * @param   pszDir      The directory to invalidate as deleted.
+ */
+int dir_cache_deleted_directory(const char *pszDir)
+{
+    assert(GetCurrentThreadId() == g_idMainThread);
+    if (kFsCacheInvalidateDeletedDirectoryA(g_pFsCache, pszDir))
+        return 0;
+    return -1;
+}
+
+
+int kmk_builtin_dircache(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+    assert(GetCurrentThreadId() == g_idMainThread);
+    if (argc >= 2)
+    {
+        const char *pszCmd = argv[1];
+        if (strcmp(pszCmd, "invalidate") == 0)
+        {
+            if (argc == 2)
+            {
+                dir_cache_invalid_all();
+                return 0;
+            }
+            errx(pCtx, 2, "the 'invalidate' command takes no arguments!\n");
+        }
+        else if (strcmp(pszCmd, "invalidate-missing") == 0)
+        {
+            if (argc == 2)
+            {
+                dir_cache_invalid_missing ();
+                return 0;
+            }
+            errx(pCtx, 2, "the 'invalidate-missing' command takes no arguments!\n");
+        }
+        else if (strcmp(pszCmd, "volatile") == 0)
+        {
+            int i;
+            for (i = 2; i < argc; i++)
+                dir_cache_volatile_dir(argv[i]);
+            return 0;
+        }
+        else if (strcmp(pszCmd, "deleted") == 0)
+        {
+            int i;
+            for (i = 2; i < argc; i++)
+                dir_cache_deleted_directory(argv[i]);
+            return 0;
+        }
+        else
+            errx(pCtx, 2, "Invalid command '%s'!\n", pszCmd);
+    }
+    else
+        errx(pCtx, 2, "No command given!\n");
+
+    K_NOREF(envp);
+    return 2;
+}
+
diff --git a/src/kmk/dir.c b/src/kmk/dir.c
new file mode 100644
index 0000000..1709479
--- /dev/null
+++ b/src/kmk/dir.c
@@ -0,0 +1,1602 @@
+/* Directory hashing for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "hash.h"
+#include "filedef.h"
+#include "dep.h"
+
+#ifdef  HAVE_DIRENT_H
+# include <dirent.h>
+# define NAMLEN(dirent) strlen((dirent)->d_name)
+# ifdef VMS
+/* its prototype is in vmsdir.h, which is not needed for HAVE_DIRENT_H */
+const char *vmsify (const char *name, int type);
+# endif
+#else
+# define dirent direct
+# define NAMLEN(dirent) (dirent)->d_namlen
+# ifdef HAVE_SYS_NDIR_H
+#  include <sys/ndir.h>
+# endif
+# ifdef HAVE_SYS_DIR_H
+#  include <sys/dir.h>
+# endif
+# ifdef HAVE_NDIR_H
+#  include <ndir.h>
+# endif
+# ifdef HAVE_VMSDIR_H
+#  include "vmsdir.h"
+# endif /* HAVE_VMSDIR_H */
+#endif
+/* bird: FreeBSD + smbfs -> readdir() + EBADF */
+#ifdef __FreeBSD__
+# include <sys/mount.h>
+#endif
+/* bird: end */
+
+#ifdef CONFIG_WITH_STRCACHE2
+# include <stddef.h>
+#endif
+
+/* In GNU systems, <dirent.h> defines this macro for us.  */
+#ifdef _D_NAMLEN
+# undef NAMLEN
+# define NAMLEN(d) _D_NAMLEN(d)
+#endif
+
+#if (defined (POSIX) || defined (VMS) || defined (WINDOWS32)) && !defined (__GNU_LIBRARY__)
+/* Posix does not require that the d_ino field be present, and some
+   systems do not provide it. */
+# define REAL_DIR_ENTRY(dp) 1
+# define FAKE_DIR_ENTRY(dp)
+#else
+# define REAL_DIR_ENTRY(dp) (dp->d_ino != 0)
+# define FAKE_DIR_ENTRY(dp) (dp->d_ino = 1)
+#endif /* POSIX */
+
+#ifdef __MSDOS__
+#include <ctype.h>
+#include <fcntl.h>
+
+/* If it's MSDOS that doesn't have _USE_LFN, disable LFN support.  */
+#ifndef _USE_LFN
+#define _USE_LFN 0
+#endif
+
+static const char *
+dosify (const char *filename)
+{
+  static char dos_filename[14];
+  char *df;
+  int i;
+
+  if (filename == 0 || _USE_LFN)
+    return filename;
+
+  /* FIXME: what about filenames which violate
+     8+3 constraints, like "config.h.in", or ".emacs"?  */
+  if (strpbrk (filename, "\"*+,;<=>?[\\]|") != 0)
+    return filename;
+
+  df = dos_filename;
+
+  /* First, transform the name part.  */
+  for (i = 0; i < 8 && ! STOP_SET (*filename, MAP_DOT|MAP_NUL); ++i)
+    *df++ = tolower ((unsigned char)*filename++);
+
+  /* Now skip to the next dot.  */
+  while (! STOP_SET (*filename, MAP_DOT|MAP_NUL))
+    ++filename;
+  if (*filename != '\0')
+    {
+      *df++ = *filename++;
+      for (i = 0; i < 3 && ! STOP_SET (*filename, MAP_DOT|MAP_NUL); ++i)
+        *df++ = tolower ((unsigned char)*filename++);
+    }
+
+  /* Look for more dots.  */
+  while (! STOP_SET (*filename, MAP_DOT|MAP_NUL))
+    ++filename;
+  if (*filename == '.')
+    return filename;
+  *df = 0;
+  return dos_filename;
+}
+#endif /* __MSDOS__ */
+
+#ifdef WINDOWS32
+#include <Windows.h>
+#include "pathstuff.h"
+#endif
+
+#ifdef _AMIGA
+#include <ctype.h>
+#endif
+
+#ifdef HAVE_CASE_INSENSITIVE_FS
+static const char *
+downcase (const char *filename)
+{
+  static PATH_VAR (new_filename);
+  char *df;
+
+  if (filename == 0)
+    return 0;
+
+  df = new_filename;
+  while (*filename != '\0')
+    {
+      *df++ = tolower ((unsigned char)*filename);
+      ++filename;
+    }
+
+  *df = 0;
+
+  return new_filename;
+}
+#endif /* HAVE_CASE_INSENSITIVE_FS */
+
+#ifdef VMS
+
+static char *
+downcase_inplace(char *filename)
+{
+  char *name;
+  name = filename;
+  while (*name != '\0')
+    {
+      *name = tolower ((unsigned char)*name);
+      ++name;
+    }
+  return filename;
+}
+
+#ifndef _USE_STD_STAT
+/* VMS 8.2 fixed the VMS stat output to have unique st_dev and st_ino
+   when _USE_STD_STAT is used on the compile line.
+
+   Prior to _USE_STD_STAT support, the st_dev is a pointer to thread
+   static memory containing the device of the last filename looked up.
+
+   Todo: find out if the ino_t still needs to be faked on a directory.
+ */
+
+/* Define this if the older VMS_INO_T is needed */
+#define VMS_INO_T 1
+
+static int
+vms_hash (const char *name)
+{
+  int h = 0;
+
+  while (*name)
+    {
+      unsigned char uc = *name;
+      int g;
+#ifdef HAVE_CASE_INSENSITIVE_FS
+      h = (h << 4) + (isupper (uc) ? tolower (uc) : uc);
+#else
+      h = (h << 4) + uc;
+#endif
+      name++;
+      g = h & 0xf0000000;
+      if (g)
+        {
+          h = h ^ (g >> 24);
+          h = h ^ g;
+        }
+    }
+  return h;
+}
+
+/* fake stat entry for a directory */
+static int
+vmsstat_dir (const char *name, struct stat *st)
+{
+  char *s;
+  int h;
+  DIR *dir;
+
+  dir = opendir (name);
+  if (dir == 0)
+    return -1;
+  closedir (dir);
+  s = strchr (name, ':');       /* find device */
+  if (s)
+    {
+      /* to keep the compiler happy we said "const char *name", now we cheat */
+      *s++ = 0;
+      st->st_dev = (char *)vms_hash (name);
+      h = vms_hash (s);
+      *(s-1) = ':';
+    }
+  else
+    {
+      st->st_dev = 0;
+      h = vms_hash (name);
+    }
+
+  st->st_ino[0] = h & 0xff;
+  st->st_ino[1] = h & 0xff00;
+  st->st_ino[2] = h >> 16;
+
+  return 0;
+}
+
+# define stat(__path, __sbuf) vmsstat_dir (__path, __sbuf)
+
+#endif /* _USE_STD_STAT */
+#endif /* VMS */
+
+/* Hash table of directories.  */
+
+#ifndef DIRECTORY_BUCKETS
+#ifdef KMK
+#  define DIRECTORY_BUCKETS 4096
+# else
+#  define DIRECTORY_BUCKETS 199
+# endif
+#endif
+
+struct directory_contents
+  {
+    dev_t dev;                  /* Device and inode numbers of this dir.  */
+#ifdef WINDOWS32
+    /* Inode means nothing on WINDOWS32. Even file key information is
+     * unreliable because it is random per file open and undefined for remote
+     * filesystems. The most unique attribute I can come up with is the fully
+     * qualified name of the directory. Beware though, this is also
+     * unreliable. I'm open to suggestion on a better way to emulate inode.  */
+# ifndef CONFIG_WITH_STRCACHE2
+    char *path_key;
+# else
+    char const *path_key; /* strcache'ed */
+# endif
+    time_t ctime;
+    time_t mtime;        /* controls check for stale directory cache */
+    int fs_flags;     /* FS_FAT, FS_NTFS, ... */
+# define FS_FAT      0x1
+# define FS_NTFS     0x2
+# define FS_UNKNOWN  0x4
+# ifdef KMK
+    time_t last_updated; /**< The last time the directory was re-read. */
+# endif
+#else
+# ifdef VMS_INO_T
+    ino_t ino[3];
+# else
+    ino_t ino;
+# endif
+#endif /* WINDOWS32 */
+    struct hash_table dirfiles; /* Files in this directory.  */
+    DIR *dirstream;             /* Stream reading this directory.  */
+  };
+
+static unsigned long
+directory_contents_hash_1 (const void *key_0)
+{
+  const struct directory_contents *key = key_0;
+  unsigned long hash;
+
+#ifdef WINDOWS32
+# ifndef CONFIG_WITH_STRCACHE2
+  hash = 0;
+  ISTRING_HASH_1 (key->path_key, hash);
+# else  /* CONFIG_WITH_STRCACHE2 */
+  hash = strcache2_calc_ptr_hash (&file_strcache, key->path_key);
+# endif /* CONFIG_WITH_STRCACHE2 */
+  hash ^= ((unsigned int) key->dev << 4) ^ (unsigned int) key->ctime;
+#else
+# ifdef VMS_INO_T
+  hash = (((unsigned int) key->dev << 4)
+          ^ ((unsigned int) key->ino[0]
+             + (unsigned int) key->ino[1]
+             + (unsigned int) key->ino[2]));
+# else
+  hash = ((unsigned int) key->dev << 4) ^ (unsigned int) key->ino;
+# endif
+#endif /* WINDOWS32 */
+  return hash;
+}
+
+static unsigned long
+directory_contents_hash_2 (const void *key_0)
+{
+  const struct directory_contents *key = key_0;
+  unsigned long hash;
+
+#ifdef WINDOWS32
+# ifndef CONFIG_WITH_STRCACHE2
+  hash = 0;
+  ISTRING_HASH_2 (key->path_key, hash);
+# else  /* CONFIG_WITH_STRCACHE2 */
+  hash = strcache2_get_hash (&file_strcache, key->path_key);
+# endif /* CONFIG_WITH_STRCACHE2 */
+  hash ^= ((unsigned int) key->dev << 4) ^ (unsigned int) ~key->ctime;
+#else
+# ifdef VMS_INO_T
+  hash = (((unsigned int) key->dev << 4)
+          ^ ~((unsigned int) key->ino[0]
+              + (unsigned int) key->ino[1]
+              + (unsigned int) key->ino[2]));
+# else
+  hash = ((unsigned int) key->dev << 4) ^ (unsigned int) ~key->ino;
+# endif
+#endif /* WINDOWS32 */
+
+  return hash;
+}
+
+/* Sometimes it's OK to use subtraction to get this value:
+     result = X - Y;
+   But, if we're not sure of the type of X and Y they may be too large for an
+   int (on a 64-bit system for example).  So, use ?: instead.
+   See Savannah bug #15534.
+
+   NOTE!  This macro has side-effects!
+*/
+
+#define MAKECMP(_x,_y)  ((_x)<(_y)?-1:((_x)==(_y)?0:1))
+
+static int
+directory_contents_hash_cmp (const void *xv, const void *yv)
+{
+  const struct directory_contents *x = xv;
+  const struct directory_contents *y = yv;
+  int result;
+
+#ifdef WINDOWS32
+# ifndef CONFIG_WITH_STRCACHE2
+  ISTRING_COMPARE (x->path_key, y->path_key, result);
+  if (result)
+    return result;
+# else  /* CONFIG_WITH_STRCACHE2 */
+  if (x->path_key != y->path_key)
+    return -1;
+# endif /* CONFIG_WITH_STRCACHE2 */
+  result = MAKECMP(x->ctime, y->ctime);
+  if (result)
+    return result;
+#else
+# ifdef VMS_INO_T
+  result = MAKECMP(x->ino[0], y->ino[0]);
+  if (result)
+    return result;
+  result = MAKECMP(x->ino[1], y->ino[1]);
+  if (result)
+    return result;
+  result = MAKECMP(x->ino[2], y->ino[2]);
+  if (result)
+    return result;
+# else
+  result = MAKECMP(x->ino, y->ino);
+  if (result)
+    return result;
+# endif
+#endif /* WINDOWS32 */
+
+  return MAKECMP(x->dev, y->dev);
+}
+
+/* Table of directory contents hashed by device and inode number.  */
+static struct hash_table directory_contents;
+
+#ifdef CONFIG_WITH_ALLOC_CACHES
+/* Allocation cache for directory contents. */
+struct alloccache directory_contents_cache;
+#endif
+
+struct directory
+  {
+    const char *name;                   /* Name of the directory.  */
+
+    /* The directory's contents.  This data may be shared by several
+       entries in the hash table, which refer to the same directory
+       (identified uniquely by 'dev' and 'ino') under different names.  */
+    struct directory_contents *contents;
+  };
+
+#ifndef CONFIG_WITH_STRCACHE2
+static unsigned long
+directory_hash_1 (const void *key)
+{
+  return_ISTRING_HASH_1 (((const struct directory *) key)->name);
+}
+
+static unsigned long
+directory_hash_2 (const void *key)
+{
+  return_ISTRING_HASH_2 (((const struct directory *) key)->name);
+}
+
+static int
+directory_hash_cmp (const void *x, const void *y)
+{
+  return_ISTRING_COMPARE (((const struct directory *) x)->name,
+                          ((const struct directory *) y)->name);
+}
+#endif /* !CONFIG_WITH_STRCACHE2 */
+
+/* Table of directories hashed by name.  */
+static struct hash_table directories;
+
+#ifdef CONFIG_WITH_ALLOC_CACHES
+/* Allocation cache for directories. */
+struct alloccache directories_cache;
+#endif
+
+/* Never have more than this many directories open at once.  */
+
+#define MAX_OPEN_DIRECTORIES 10
+
+static unsigned int open_directories = 0;
+
+
+/* Hash table of files in each directory.  */
+
+struct dirfile
+  {
+    const char *name;           /* Name of the file.  */
+    size_t length;
+    short impossible;           /* This file is impossible.  */
+  };
+
+#ifndef CONFIG_WITH_STRCACHE2
+static unsigned long
+dirfile_hash_1 (const void *key)
+{
+  return_ISTRING_HASH_1 (((struct dirfile const *) key)->name);
+}
+
+static unsigned long
+dirfile_hash_2 (const void *key)
+{
+  return_ISTRING_HASH_2 (((struct dirfile const *) key)->name);
+}
+
+static int
+dirfile_hash_cmp (const void *xv, const void *yv)
+{
+  const struct dirfile *x = xv;
+  const struct dirfile *y = yv;
+  int result = x->length - y->length;
+  if (result)
+    return result;
+  return_ISTRING_COMPARE (x->name, y->name);
+}
+#endif /* !CONFIG_WITH_STRCACHE2 */
+
+#ifndef DIRFILE_BUCKETS
+#define DIRFILE_BUCKETS 107
+#endif
+
+#ifdef CONFIG_WITH_ALLOC_CACHES
+/* Allocation cache for dirfiles. */
+struct alloccache dirfile_cache;
+#endif
+
+
+static int dir_contents_file_exists_p (struct directory_contents *dir,
+                                       const char *filename);
+static struct directory *find_directory (const char *name);
+
+/* Find the directory named NAME and return its 'struct directory'.  */
+
+static struct directory *
+find_directory (const char *name)
+{
+  struct directory *dir;
+  struct directory **dir_slot;
+  struct directory dir_key;
+
+#ifndef CONFIG_WITH_STRCACHE2
+  dir_key.name = name;
+  dir_slot = (struct directory **) hash_find_slot (&directories, &dir_key);
+#else
+  const char *p = name + strlen (name);
+# if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
+  dir_key.name = strcache_add_len (downcase(name), p - name);
+# else
+  dir_key.name = strcache_add_len (name, p - name);
+# endif
+  dir_slot = (struct directory **) hash_find_slot_strcached (&directories, &dir_key);
+#endif
+  dir = *dir_slot;
+
+  if (HASH_VACANT (dir))
+    {
+      /* The directory was not found.  Create a new entry for it.  */
+#ifndef CONFIG_WITH_STRCACHE2
+      const char *p = name + strlen (name);
+#endif
+      struct stat st;
+      int r;
+
+#ifndef CONFIG_WITH_ALLOC_CACHES
+      dir = xmalloc (sizeof (struct directory));
+#else
+      dir = alloccache_alloc (&directories_cache);
+#endif
+#ifndef CONFIG_WITH_STRCACHE2
+#if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
+      /* Todo: Why is this only needed on VMS? */
+      {
+        char *lname = downcase_inplace (xstrdup (name));
+        dir->name = strcache_add_len (lname, p - name);
+        free (lname);
+      }
+#else
+      dir->name = strcache_add_len (name, p - name);
+#endif
+#else  /* CONFIG_WITH_STRCACHE2 */
+      dir->name = dir_key.name;
+#endif /* CONFIG_WITH_STRCACHE2 */
+      hash_insert_at (&directories, dir, dir_slot);
+      /* The directory is not in the name hash table.
+         Find its device and inode numbers, and look it up by them.  */
+
+#if defined(WINDOWS32)
+      {
+        char tem[MAXPATHLEN], *tstart, *tend;
+
+        /* Remove any trailing slashes.  Windows32 stat fails even on
+           valid directories if they end in a slash. */
+        memcpy (tem, name, p - name + 1);
+        tstart = tem;
+        if (tstart[1] == ':')
+          tstart += 2;
+        for (tend = tem + (p - name - 1);
+             tend > tstart && (*tend == '/' || *tend == '\\');
+             tend--)
+          *tend = '\0';
+
+        r = stat (tem, &st);
+      }
+#else
+      EINTRLOOP (r, stat (name, &st));
+#endif
+
+      if (r < 0)
+        {
+        /* Couldn't stat the directory.  Mark this by
+           setting the 'contents' member to a nil pointer.  */
+          dir->contents = 0;
+        }
+      else
+        {
+          /* Search the contents hash table; device and inode are the key.  */
+
+#ifdef WINDOWS32
+          PATH_VAR (w32_fullpath);
+          char *w32_path;
+#endif
+          struct directory_contents *dc;
+          struct directory_contents **dc_slot;
+          struct directory_contents dc_key;
+
+          dc_key.dev = st.st_dev;
+#ifdef WINDOWS32
+          w32_path = unix_slashes_resolved (name, w32_fullpath, GET_PATH_MAX);
+# ifndef CONFIG_WITH_STRCACHE2
+          dc_key.path_key = w32_path; /* = w32ify (name, 1); - bird */
+# else  /* CONFIG_WITH_STRCACHE2 */
+          dc_key.path_key = strcache_add (w32_path);
+# endif /* CONFIG_WITH_STRCACHE2 */
+          dc_key.ctime = st.st_ctime;
+#else
+# ifdef VMS_INO_T
+          dc_key.ino[0] = st.st_ino[0];
+          dc_key.ino[1] = st.st_ino[1];
+          dc_key.ino[2] = st.st_ino[2];
+# else
+          dc_key.ino = st.st_ino;
+# endif
+#endif
+          dc_slot = (struct directory_contents **) hash_find_slot (&directory_contents, &dc_key);
+          dc = *dc_slot;
+
+          if (HASH_VACANT (dc))
+            {
+              /* Nope; this really is a directory we haven't seen before.  */
+#ifdef WINDOWS32
+              char  fs_label[BUFSIZ];
+              char  fs_type[BUFSIZ];
+              unsigned long  fs_serno;
+              unsigned long  fs_flags;
+              unsigned long  fs_len;
+#endif
+#if defined(WINDOWS32) && defined(KMK)
+              static char s_last_volume[4];
+              static int  s_last_flags;
+#endif
+
+#ifndef CONFIG_WITH_ALLOC_CACHES
+	      dc = (struct directory_contents *)
+		xmalloc (sizeof (struct directory_contents));
+#else
+              dc = (struct directory_contents *)
+                    alloccache_alloc (&directory_contents_cache);
+#endif
+
+              /* Enter it in the contents hash table.  */
+              dc->dev = st.st_dev;
+#ifdef WINDOWS32
+# ifndef CONFIG_WITH_STRCACHE2
+              dc->path_key = xstrdup (w32_path);
+# else  /* CONFIG_WITH_STRCACHE2 */
+              dc->path_key = dc_key.path_key;
+# endif /* CONFIG_WITH_STRCACHE2 */
+
+              dc->ctime = st.st_ctime;
+              dc->mtime = st.st_mtime;
+# ifdef KMK
+              dc->last_updated = time(NULL);
+# endif
+
+              /* NTFS is the only WINDOWS32 filesystem that bumps mtime on a
+                 directory when files are added/deleted from a directory.  */
+              w32_path[3] = '\0';
+
+# ifdef KMK /* Need for speed: Cache the GetVolumeInformation result. */
+              if (   s_last_volume[0] == w32_path[0]
+                  && s_last_volume[1] == w32_path[1]
+                  && s_last_volume[2] == w32_path[2]
+                  && s_last_volume[3] == w32_path[3])
+                dc->fs_flags = s_last_flags;
+              else
+                {
+# endif
+              if (GetVolumeInformation (w32_path, fs_label, sizeof (fs_label),
+                                        &fs_serno, &fs_len, &fs_flags, fs_type,
+                                        sizeof (fs_type)) == FALSE)
+                dc->fs_flags = FS_UNKNOWN;
+              else if (!strcmp (fs_type, "FAT"))
+                dc->fs_flags = FS_FAT;
+              else if (!strcmp (fs_type, "NTFS"))
+                dc->fs_flags = FS_NTFS;
+              else
+                dc->fs_flags = FS_UNKNOWN;
+# ifdef KMK
+              s_last_volume[0] = w32_path[0];
+              s_last_volume[1] = w32_path[1];
+              s_last_volume[2] = w32_path[2];
+              s_last_volume[3] = w32_path[3];
+              s_last_flags     = dc->fs_flags;
+# endif
+#else
+# ifdef VMS_INO_T
+              dc->ino[0] = st.st_ino[0];
+              dc->ino[1] = st.st_ino[1];
+              dc->ino[2] = st.st_ino[2];
+# else
+              dc->ino = st.st_ino;
+# endif
+#endif /* WINDOWS32 */
+              hash_insert_at (&directory_contents, dc, dc_slot);
+              ENULLLOOP (dc->dirstream, opendir (name));
+              if (dc->dirstream == 0)
+                /* Couldn't open the directory.  Mark this by setting the
+                   'files' member to a nil pointer.  */
+                dc->dirfiles.ht_vec = 0;
+	      else
+		{
+#ifdef KMK
+		  int buckets = st.st_nlink * 2;
+		  if (buckets < DIRFILE_BUCKETS)
+		    buckets = DIRFILE_BUCKETS;
+		  hash_init_strcached (&dc->dirfiles, buckets, &file_strcache,
+                                       offsetof (struct dirfile, name));
+#else
+# ifndef CONFIG_WITH_STRCACHE2
+                  hash_init (&dc->dirfiles, DIRFILE_BUCKETS,
+                             dirfile_hash_1, dirfile_hash_2, dirfile_hash_cmp);
+# else  /* CONFIG_WITH_STRCACHE2 */
+                  hash_init_strcached (&dc->dirfiles, DIRFILE_BUCKETS,
+                                       &file_strcache,
+                                       offsetof (struct dirfile, name));
+# endif /* CONFIG_WITH_STRCACHE2 */
+#endif
+                  ++open_directories;
+                  if (open_directories == MAX_OPEN_DIRECTORIES)
+                    /* We have too many directories open already.
+                       Read the entire directory and then close it.  */
+                    dir_contents_file_exists_p (dc, 0);
+                }
+            }
+
+          /* Point the name-hashed entry for DIR at its contents data.  */
+          dir->contents = dc;
+        }
+    }
+
+  return dir;
+}
+
+/* Return 1 if the name FILENAME is entered in DIR's hash table.
+   FILENAME must contain no slashes.  */
+
+static int
+dir_contents_file_exists_p (struct directory_contents *dir,
+                            const char *filename)
+{
+  struct dirfile *df;
+  struct dirent *d;
+#ifdef WINDOWS32
+# ifndef KMK
+  struct stat st;
+# endif
+  int rehash = 0;
+#endif
+#ifdef KMK
+  int ret = 0;
+#endif
+
+  if (dir == 0 || dir->dirfiles.ht_vec == 0)
+    /* The directory could not be stat'd or opened.  */
+    return 0;
+
+#ifdef __MSDOS__
+  filename = dosify (filename);
+#endif
+
+#ifdef HAVE_CASE_INSENSITIVE_FS
+  filename = downcase (filename);
+#endif
+
+#ifdef __EMX__
+  if (filename != 0)
+    _fnlwr (filename); /* lower case for FAT drives */
+#endif
+  if (filename != 0)
+    {
+      struct dirfile dirfile_key;
+
+      if (*filename == '\0')
+        {
+          /* Checking if the directory exists.  */
+          return 1;
+        }
+#ifndef CONFIG_WITH_STRCACHE2
+      dirfile_key.name = filename;
+      dirfile_key.length = strlen (filename);
+      df = hash_find_item (&dir->dirfiles, &dirfile_key);
+#else  /* CONFIG_WITH_STRCACHE2 */
+      dirfile_key.length = strlen (filename);
+      dirfile_key.name = filename
+        = strcache_add_len (filename, dirfile_key.length);
+      df = hash_find_item_strcached (&dir->dirfiles, &dirfile_key);
+#endif /* CONFIG_WITH_STRCACHE2 */
+      if (df)
+        return !df->impossible;
+    }
+
+  /* The file was not found in the hashed list.
+     Try to read the directory further.  */
+
+  if (dir->dirstream == 0)
+    {
+#if defined(WINDOWS32) && !defined(KMK)
+      /*
+       * Check to see if directory has changed since last read. FAT
+       * filesystems force a rehash always as mtime does not change
+       * on directories (ugh!).
+       */
+# ifdef KMK
+      if (dir->path_key && time(NULL) > dc->last_updated + 2) /* KMK: Only recheck every 2 seconds. */
+# else
+      if (dir->path_key)
+# endif
+        {
+          if ((dir->fs_flags & FS_FAT) != 0)
+	    {
+	      dir->mtime = time ((time_t *) 0);
+	      rehash = 1;
+	    }
+# ifdef KMK
+	  else if (   birdStatModTimeOnly (dir->path_key, &st.st_mtim, 1) == 0
+                   && st.st_mtime > dir->mtime)
+# else
+	  else if (stat (dir->path_key, &st) == 0 && st.st_mtime > dir->mtime)
+# endif
+            {
+              /* reset date stamp to show most recent re-process.  */
+              dir->mtime = st.st_mtime;
+              rehash = 1;
+            }
+
+
+          /* If it has been already read in, all done.  */
+          if (!rehash)
+            return 0;
+
+          /* make sure directory can still be opened; if not return.  */
+          dir->dirstream = opendir (dir->path_key);
+          if (!dir->dirstream)
+            return 0;
+# ifdef KMK
+          dc->last_updated = time(NULL);
+# endif
+        }
+      else
+#endif
+        /* The directory has been all read in.  */
+        return 0;
+    }
+
+  while (1)
+    {
+      /* Enter the file in the hash table.  */
+      unsigned int len;
+      struct dirfile dirfile_key;
+      struct dirfile **dirfile_slot;
+
+      ENULLLOOP (d, readdir (dir->dirstream));
+      if (d == 0)
+        {
+/* bird: Workaround for smbfs mounts returning EBADF at the end of the search.
+         To exactly determin the cause here, I should probably do some smbfs
+         tracing, but for now just ignoring the EBADF on seems to work.
+         (The smb server is 64-bit vista, btw.) */
+#if defined (__FreeBSD__)
+          struct statfs stfs;
+          int saved_errno = errno;
+          errno = 0;
+          if (saved_errno == EBADF
+           && !fstatfs (dirfd (dir->dirstream), &stfs)
+           && !(stfs.f_flags & MNT_LOCAL)
+           && !strcmp(stfs.f_fstypename, "smbfs"))
+            {
+              /*fprintf (stderr, "EBADF on remote fs! dirfd=%d errno=%d\n",
+                       dirfd (dir->dirstream), errno);*/
+              saved_errno = 0;
+            }
+          errno = saved_errno;
+#endif
+/* bird: end */
+          if (errno)
+            pfatal_with_name ("INTERNAL: readdir");
+          break;
+        }
+
+#if defined(VMS) && defined(HAVE_DIRENT_H)
+      /* In VMS we get file versions too, which have to be stripped off.
+         Some versions of VMS return versions on Unix files even when
+         the feature option to strip them is set.  */
+      {
+        char *p = strrchr (d->d_name, ';');
+        if (p)
+          *p = '\0';
+      }
+#endif
+      if (!REAL_DIR_ENTRY (d))
+        continue;
+
+      len = NAMLEN (d);
+#ifndef CONFIG_WITH_STRCACHE2
+      dirfile_key.name = d->d_name;
+      dirfile_key.length = len;
+      dirfile_slot = (struct dirfile **) hash_find_slot (&dir->dirfiles, &dirfile_key);
+#else
+# if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
+      dirfile_key.name = strcache_add_len (downcase(d->d_name), len);
+# else
+      dirfile_key.name = strcache_add_len (d->d_name, len);
+# endif
+      dirfile_key.length = len;
+      dirfile_slot = (struct dirfile **) hash_find_slot_strcached (&dir->dirfiles, &dirfile_key);
+#endif
+#ifdef WINDOWS32
+      /*
+       * If re-reading a directory, don't cache files that have
+       * already been discovered.
+       */
+      if (! rehash || HASH_VACANT (*dirfile_slot))
+#endif
+	{
+#ifndef CONFIG_WITH_ALLOC_CACHES
+          df = xmalloc (sizeof (struct dirfile));
+#else
+	  df = alloccache_alloc (&dirfile_cache);
+#endif
+#ifndef CONFIG_WITH_STRCACHE2
+#if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
+          /* TODO: Why is this only needed on VMS? */
+          df->name = strcache_add_len (downcase_inplace (d->d_name), len);
+#else
+          df->name = strcache_add_len (d->d_name, len);
+#endif
+#else  /* CONFIG_WITH_STRCACHE2 */
+	  df->name = dirfile_key.name;
+#endif /* CONFIG_WITH_STRCACHE2 */
+          df->length = len;
+          df->impossible = 0;
+          hash_insert_at (&dir->dirfiles, df, dirfile_slot);
+        }
+      /* Check if the name matches the one we're searching for.  */
+#ifndef CONFIG_WITH_STRCACHE2
+      if (filename != 0 && patheq (d->d_name, filename))
+#else
+      if (filename != 0 && dirfile_key.name == filename)
+#endif
+#ifdef KMK
+        ret = 1; /* Cache the whole dir. Prevents trouble on windows and os2 during 'rebuild'. */
+#else
+        return 1;
+#endif
+    }
+
+  /* If the directory has been completely read in,
+     close the stream and reset the pointer to nil.  */
+  if (d == 0)
+    {
+      --open_directories;
+      closedir (dir->dirstream);
+      dir->dirstream = 0;
+    }
+#ifdef KMK
+  return ret;
+#else
+  return 0;
+#endif
+}
+
+/* Return 1 if the name FILENAME in directory DIRNAME
+   is entered in the dir hash table.
+   FILENAME must contain no slashes.  */
+
+int
+dir_file_exists_p (const char *dirname, const char *filename)
+{
+#ifdef VMS
+  if ((filename != NULL) && (dirname != NULL))
+    {
+      int want_vmsify;
+      want_vmsify = (strpbrk (dirname, ":<[") != NULL);
+      if (want_vmsify)
+        filename = vmsify (filename, 0);
+    }
+#endif
+  return dir_contents_file_exists_p (find_directory (dirname)->contents,
+                                     filename);
+}
+
+/* Return 1 if the file named NAME exists.  */
+
+int
+file_exists_p (const char *name)
+{
+  const char *dirend;
+  const char *dirname;
+  const char *slash;
+
+#ifndef NO_ARCHIVES
+  if (ar_name (name))
+    return ar_member_date (name) != (time_t) -1;
+#endif
+
+  dirend = strrchr (name, '/');
+#ifdef VMS
+  if (dirend == 0)
+    {
+      dirend = strrchr (name, ']');
+      dirend == NULL ? dirend : dirend++;
+    }
+  if (dirend == 0)
+    {
+      dirend = strrchr (name, '>');
+      dirend == NULL ? dirend : dirend++;
+    }
+  if (dirend == 0)
+    {
+      dirend = strrchr (name, ':');
+      dirend == NULL ? dirend : dirend++;
+    }
+#endif /* VMS */
+#ifdef HAVE_DOS_PATHS
+  /* Forward and backslashes might be mixed.  We need the rightmost one.  */
+  {
+    const char *bslash = strrchr (name, '\\');
+    if (!dirend || bslash > dirend)
+      dirend = bslash;
+    /* The case of "d:file".  */
+    if (!dirend && name[0] && name[1] == ':')
+      dirend = name + 1;
+  }
+#endif /* HAVE_DOS_PATHS */
+  if (dirend == 0)
+#ifndef _AMIGA
+    return dir_file_exists_p (".", name);
+#else /* !AMIGA */
+    return dir_file_exists_p ("", name);
+#endif /* AMIGA */
+
+  slash = dirend;
+  if (dirend == name)
+    dirname = "/";
+  else
+    {
+      char *p;
+#ifdef HAVE_DOS_PATHS
+  /* d:/ and d: are *very* different...  */
+      if (dirend < name + 3 && name[1] == ':' &&
+          (*dirend == '/' || *dirend == '\\' || *dirend == ':'))
+        dirend++;
+#endif
+      p = alloca (dirend - name + 1);
+      memcpy (p, name, dirend - name);
+      p[dirend - name] = '\0';
+      dirname = p;
+    }
+#ifdef VMS
+  if (*slash == '/')
+    slash++;
+#else
+  slash++;
+#endif
+  return dir_file_exists_p (dirname, slash);
+}
+
+/* Mark FILENAME as 'impossible' for 'file_impossible_p'.
+   This means an attempt has been made to search for FILENAME
+   as an intermediate file, and it has failed.  */
+
+void
+file_impossible (const char *filename)
+{
+  const char *dirend;
+  const char *p = filename;
+  struct directory *dir;
+  struct dirfile *new;
+
+  dirend = strrchr (p, '/');
+#ifdef VMS
+  if (dirend == NULL)
+    {
+      dirend = strrchr (p, ']');
+      dirend == NULL ? dirend : dirend++;
+    }
+  if (dirend == NULL)
+    {
+      dirend = strrchr (p, '>');
+      dirend == NULL ? dirend : dirend++;
+    }
+  if (dirend == NULL)
+    {
+      dirend = strrchr (p, ':');
+      dirend == NULL ? dirend : dirend++;
+    }
+#endif
+#ifdef HAVE_DOS_PATHS
+  /* Forward and backslashes might be mixed.  We need the rightmost one.  */
+  {
+    const char *bslash = strrchr (p, '\\');
+    if (!dirend || bslash > dirend)
+      dirend = bslash;
+    /* The case of "d:file".  */
+    if (!dirend && p[0] && p[1] == ':')
+      dirend = p + 1;
+  }
+#endif /* HAVE_DOS_PATHS */
+  if (dirend == 0)
+#ifdef _AMIGA
+    dir = find_directory ("");
+#else /* !AMIGA */
+    dir = find_directory (".");
+#endif /* AMIGA */
+  else
+    {
+      const char *dirname;
+      const char *slash = dirend;
+      if (dirend == p)
+        dirname = "/";
+      else
+        {
+          char *cp;
+#ifdef HAVE_DOS_PATHS
+          /* d:/ and d: are *very* different...  */
+          if (dirend < p + 3 && p[1] == ':' &&
+              (*dirend == '/' || *dirend == '\\' || *dirend == ':'))
+            dirend++;
+#endif
+          cp = alloca (dirend - p + 1);
+          memcpy (cp, p, dirend - p);
+          cp[dirend - p] = '\0';
+          dirname = cp;
+        }
+      dir = find_directory (dirname);
+#ifdef VMS
+      if (*slash == '/')
+        filename = p = slash + 1;
+      else
+        filename = p = slash;
+#else
+      filename = p = slash + 1;
+#endif
+    }
+
+  if (dir->contents == 0)
+    /* The directory could not be stat'd.  We allocate a contents
+       structure for it, but leave it out of the contents hash table.  */
+#ifndef CONFIG_WITH_ALLOC_CACHES
+    dir->contents = xcalloc (sizeof (struct directory_contents));
+#else
+    dir->contents = alloccache_calloc (&directory_contents_cache);
+#endif
+
+  if (dir->contents->dirfiles.ht_vec == 0)
+    {
+#ifndef CONFIG_WITH_STRCACHE2
+      hash_init (&dir->contents->dirfiles, DIRFILE_BUCKETS,
+                 dirfile_hash_1, dirfile_hash_2, dirfile_hash_cmp);
+#else  /* CONFIG_WITH_STRCACHE2 */
+      hash_init_strcached (&dir->contents->dirfiles, DIRFILE_BUCKETS,
+                           &file_strcache, offsetof (struct dirfile, name));
+#endif /* CONFIG_WITH_STRCACHE2 */
+    }
+
+  /* Make a new entry and put it in the table.  */
+
+#ifndef CONFIG_WITH_ALLOC_CACHES
+  new = xmalloc (sizeof (struct dirfile));
+#else
+  new = alloccache_alloc (&dirfile_cache);
+#endif
+  new->length = strlen (filename);
+#if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
+  /* todo: Why is this only needed on VMS? */
+  new->name = strcache_add_len (downcase (filename), new->length);
+#else
+  new->name = strcache_add_len (filename, new->length);
+#endif
+  new->impossible = 1;
+#ifndef CONFIG_WITH_STRCACHE2
+  hash_insert (&dir->contents->dirfiles, new);
+#else  /* CONFIG_WITH_STRCACHE2 */
+  hash_insert_strcached (&dir->contents->dirfiles, new);
+#endif /* CONFIG_WITH_STRCACHE2 */
+}
+
+/* Return nonzero if FILENAME has been marked impossible.  */
+
+int
+file_impossible_p (const char *filename)
+{
+  const char *dirend;
+  struct directory_contents *dir;
+  struct dirfile *dirfile;
+  struct dirfile dirfile_key;
+#ifdef VMS
+  int want_vmsify = 0;
+#endif
+
+  dirend = strrchr (filename, '/');
+#ifdef VMS
+  if (dirend == NULL)
+    {
+      want_vmsify = (strpbrk (filename, "]>:^") != NULL);
+      dirend = strrchr (filename, ']');
+    }
+  if (dirend == NULL && want_vmsify)
+    dirend = strrchr (filename, '>');
+  if (dirend == NULL && want_vmsify)
+    dirend = strrchr (filename, ':');
+#endif
+#ifdef HAVE_DOS_PATHS
+  /* Forward and backslashes might be mixed.  We need the rightmost one.  */
+  {
+    const char *bslash = strrchr (filename, '\\');
+    if (!dirend || bslash > dirend)
+      dirend = bslash;
+    /* The case of "d:file".  */
+    if (!dirend && filename[0] && filename[1] == ':')
+      dirend = filename + 1;
+  }
+#endif /* HAVE_DOS_PATHS */
+  if (dirend == 0)
+#ifdef _AMIGA
+    dir = find_directory ("")->contents;
+#else /* !AMIGA */
+    dir = find_directory (".")->contents;
+#endif /* AMIGA */
+  else
+    {
+      const char *dirname;
+      const char *slash = dirend;
+      if (dirend == filename)
+        dirname = "/";
+      else
+        {
+          char *cp;
+#ifdef HAVE_DOS_PATHS
+          /* d:/ and d: are *very* different...  */
+          if (dirend < filename + 3 && filename[1] == ':' &&
+              (*dirend == '/' || *dirend == '\\' || *dirend == ':'))
+            dirend++;
+#endif
+          cp = alloca (dirend - filename + 1);
+          memcpy (cp, filename, dirend - filename);
+          cp[dirend - filename] = '\0';
+          dirname = cp;
+        }
+      dir = find_directory (dirname)->contents;
+#ifdef VMS
+      if (*slash == '/')
+        filename = slash + 1;
+      else
+        filename = slash;
+#else
+      filename = slash + 1;
+#endif
+    }
+
+  if (dir == 0 || dir->dirfiles.ht_vec == 0)
+    /* There are no files entered for this directory.  */
+    return 0;
+
+#ifdef __MSDOS__
+  filename = dosify (filename);
+#endif
+#ifdef HAVE_CASE_INSENSITIVE_FS
+  filename = downcase (filename);
+#endif
+#ifdef VMS
+  if (want_vmsify)
+    filename = vmsify (filename, 1);
+#endif
+
+#ifndef CONFIG_WITH_STRCACHE2
+  dirfile_key.name = filename;
+  dirfile_key.length = strlen (filename);
+  dirfile = hash_find_item (&dir->dirfiles, &dirfile_key);
+#else
+  dirfile_key.length = strlen (filename);
+  dirfile_key.name = strcache_add_len (filename, dirfile_key.length);
+  dirfile = hash_find_item_strcached (&dir->dirfiles, &dirfile_key);
+#endif
+  if (dirfile)
+    return dirfile->impossible;
+
+  return 0;
+}
+
+/* Return the already allocated name in the
+   directory hash table that matches DIR.  */
+
+const char *
+dir_name (const char *dir)
+{
+  return find_directory (dir)->name;
+}
+
+/* Print the data base of directories.  */
+
+void
+print_dir_data_base (void)
+{
+  unsigned int files;
+  unsigned int impossible;
+  struct directory **dir_slot;
+  struct directory **dir_end;
+
+  puts (_("\n# Directories\n"));
+
+  files = impossible = 0;
+
+  dir_slot = (struct directory **) directories.ht_vec;
+  dir_end = dir_slot + directories.ht_size;
+  for ( ; dir_slot < dir_end; dir_slot++)
+    {
+      struct directory *dir = *dir_slot;
+      if (! HASH_VACANT (dir))
+        {
+          if (dir->contents == 0)
+            printf (_("# %s: could not be stat'd.\n"), dir->name);
+          else if (dir->contents->dirfiles.ht_vec == 0)
+            {
+#ifdef WINDOWS32
+              printf (_("# %s (key %s, mtime %I64u): could not be opened.\n"),
+                      dir->name, dir->contents->path_key,
+                      (unsigned long long)dir->contents->mtime);
+#else  /* WINDOWS32 */
+#ifdef VMS_INO_T
+              printf (_("# %s (device %d, inode [%d,%d,%d]): could not be opened.\n"),
+                      dir->name, dir->contents->dev,
+                      dir->contents->ino[0], dir->contents->ino[1],
+                      dir->contents->ino[2]);
+#else
+              printf (_("# %s (device %ld, inode %ld): could not be opened.\n"),
+                      dir->name, (long int) dir->contents->dev,
+                      (long int) dir->contents->ino);
+#endif
+#endif /* WINDOWS32 */
+            }
+          else
+            {
+              unsigned int f = 0;
+              unsigned int im = 0;
+              struct dirfile **files_slot;
+              struct dirfile **files_end;
+
+              files_slot = (struct dirfile **) dir->contents->dirfiles.ht_vec;
+              files_end = files_slot + dir->contents->dirfiles.ht_size;
+              for ( ; files_slot < files_end; files_slot++)
+                {
+                  struct dirfile *df = *files_slot;
+                  if (! HASH_VACANT (df))
+                    {
+                      if (df->impossible)
+                        ++im;
+                      else
+                        ++f;
+                    }
+                }
+#ifdef WINDOWS32
+              printf (_("# %s (key %s, mtime %I64u): "),
+                      dir->name, dir->contents->path_key,
+                      (unsigned long long)dir->contents->mtime);
+#else  /* WINDOWS32 */
+#ifdef VMS_INO_T
+              printf (_("# %s (device %d, inode [%d,%d,%d]): "),
+                      dir->name, dir->contents->dev,
+                      dir->contents->ino[0], dir->contents->ino[1],
+                      dir->contents->ino[2]);
+#else
+              printf (_("# %s (device %ld, inode %ld): "),
+                      dir->name,
+                      (long)dir->contents->dev, (long)dir->contents->ino);
+#endif
+#endif /* WINDOWS32 */
+              if (f == 0)
+                fputs (_("No"), stdout);
+              else
+                printf ("%u", f);
+              fputs (_(" files, "), stdout);
+              if (im == 0)
+                fputs (_("no"), stdout);
+              else
+                printf ("%u", im);
+              fputs (_(" impossibilities"), stdout);
+              if (dir->contents->dirstream == 0)
+                puts (".");
+              else
+                puts (_(" so far."));
+              files += f;
+              impossible += im;
+#ifdef KMK
+              fputs ("# ", stdout);
+              hash_print_stats (&dir->contents->dirfiles, stdout);
+              fputs ("\n", stdout);
+#endif
+            }
+        }
+    }
+
+  fputs ("\n# ", stdout);
+  if (files == 0)
+    fputs (_("No"), stdout);
+  else
+    printf ("%u", files);
+  fputs (_(" files, "), stdout);
+  if (impossible == 0)
+    fputs (_("no"), stdout);
+  else
+    printf ("%u", impossible);
+  printf (_(" impossibilities in %lu directories.\n"), directories.ht_fill);
+#ifdef KMK
+  fputs ("# directories: ", stdout);
+  hash_print_stats (&directories, stdout);
+  fputs ("\n# directory_contents: ", stdout);
+  hash_print_stats (&directory_contents, stdout);
+  fputs ("\n", stdout);
+#endif
+}
+
+#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
+/* Print stats */
+
+void print_dir_stats (void)
+{
+  /** @todo normal dir stats.  */
+}
+#endif
+
+/* Hooks for globbing.  */
+
+/* Structure describing state of iterating through a directory hash table.  */
+
+struct dirstream
+  {
+    struct directory_contents *contents; /* The directory being read.  */
+    struct dirfile **dirfile_slot; /* Current slot in table.  */
+  };
+
+/* Forward declarations.  */
+static __ptr_t open_dirstream (const char *);
+static struct dirent *read_dirstream (__ptr_t);
+
+static __ptr_t
+open_dirstream (const char *directory)
+{
+  struct dirstream *new;
+  struct directory *dir = find_directory (directory);
+
+  if (dir->contents == 0 || dir->contents->dirfiles.ht_vec == 0)
+    /* DIR->contents is nil if the directory could not be stat'd.
+       DIR->contents->dirfiles is nil if it could not be opened.  */
+    return 0;
+
+  /* Read all the contents of the directory now.  There is no benefit
+     in being lazy, since glob will want to see every file anyway.  */
+
+  dir_contents_file_exists_p (dir->contents, 0);
+
+  new = xmalloc (sizeof (struct dirstream));
+  new->contents = dir->contents;
+  new->dirfile_slot = (struct dirfile **) new->contents->dirfiles.ht_vec;
+
+  return (__ptr_t) new;
+}
+
+static struct dirent *
+read_dirstream (__ptr_t stream)
+{
+  static char *buf;
+  static unsigned int bufsz;
+
+  struct dirstream *const ds = (struct dirstream *) stream;
+  struct directory_contents *dc = ds->contents;
+  struct dirfile **dirfile_end = (struct dirfile **) dc->dirfiles.ht_vec + dc->dirfiles.ht_size;
+
+  while (ds->dirfile_slot < dirfile_end)
+    {
+      struct dirfile *df = *ds->dirfile_slot++;
+      if (! HASH_VACANT (df) && !df->impossible)
+        {
+          /* The glob interface wants a 'struct dirent', so mock one up.  */
+          struct dirent *d;
+          unsigned int len = df->length + 1;
+          unsigned int sz = sizeof (*d) - sizeof (d->d_name) + len;
+          if (sz > bufsz)
+            {
+              bufsz *= 2;
+              if (sz > bufsz)
+                bufsz = sz;
+              buf = xrealloc (buf, bufsz);
+            }
+          d = (struct dirent *) buf;
+#ifdef __MINGW32__
+# if __MINGW32_MAJOR_VERSION < 3 || (__MINGW32_MAJOR_VERSION == 3 && \
+                                     __MINGW32_MINOR_VERSION == 0)
+          d->d_name = xmalloc (len);
+# endif
+#endif
+          FAKE_DIR_ENTRY (d);
+#ifdef _DIRENT_HAVE_D_NAMLEN
+          d->d_namlen = len - 1;
+#endif
+#ifdef _DIRENT_HAVE_D_TYPE
+          d->d_type = DT_UNKNOWN;
+#endif
+          memcpy (d->d_name, df->name, len);
+          return d;
+        }
+    }
+
+  return 0;
+}
+
+/* On 64 bit ReliantUNIX (5.44 and above) in LFS mode, stat() is actually a
+ * macro for stat64().  If stat is a macro, make a local wrapper function to
+ * invoke it.
+ *
+ * On MS-Windows, stat() "succeeds" for foo/bar/. where foo/bar is a
+ * regular file; fix that here.
+ */
+#if !defined(stat) && !defined(WINDOWS32) || defined(VMS)
+# ifndef VMS
+#  ifndef HAVE_SYS_STAT_H
+int stat (const char *path, struct stat *sbuf);
+#  endif
+# else
+    /* We are done with the fake stat.  Go back to the real stat */
+#   ifdef stat
+#     undef stat
+#   endif
+# endif
+# define local_stat stat
+#else
+static int
+local_stat (const char *path, struct stat *buf)
+{
+  int e;
+#ifdef WINDOWS32
+  size_t plen = strlen (path);
+
+  /* Make sure the parent of "." exists and is a directory, not a
+     file.  This is because 'stat' on Windows normalizes the argument
+     foo/. => foo without checking first that foo is a directory.  */
+  if (plen > 1 && path[plen - 1] == '.'
+      && (path[plen - 2] == '/' || path[plen - 2] == '\\'))
+    {
+      char parent[MAXPATHLEN];
+
+      strncpy (parent, path, plen - 2);
+      parent[plen - 2] = '\0';
+      if (stat (parent, buf) < 0 || !_S_ISDIR (buf->st_mode))
+        return -1;
+    }
+#endif
+
+  EINTRLOOP (e, stat (path, buf));
+  return e;
+}
+#endif
+
+#ifdef KMK
+static int dir_exists_p (const char *dirname)
+{
+  if (file_exists_p (dirname))
+    {
+      struct directory *dir = find_directory (dirname);
+      if (dir != NULL && dir->contents && dir->contents->dirfiles.ht_vec != NULL)
+        return 1;
+    }
+  return 0;
+}
+#endif
+
+void
+dir_setup_glob (glob_t *gl)
+{
+  gl->gl_opendir = open_dirstream;
+  gl->gl_readdir = read_dirstream;
+  gl->gl_closedir = free;
+  gl->gl_stat = local_stat;
+#ifdef __EMX__ /* The FreeBSD implementation actually uses gl_lstat!! */
+  gl->gl_lstat = local_stat;
+#endif
+#ifdef GLOB_WITH_EXTENDED_KMK_MEMBERS
+  gl->gl_exists = file_exists_p;
+  gl->gl_isdir = dir_exists_p;
+#endif
+  /* We don't bother setting gl_lstat, since glob never calls it.
+     The slot is only there for compatibility with 4.4 BSD.  */
+}
+
+void
+hash_init_directories (void)
+{
+#ifndef CONFIG_WITH_STRCACHE2
+  hash_init (&directories, DIRECTORY_BUCKETS,
+             directory_hash_1, directory_hash_2, directory_hash_cmp);
+#else  /* CONFIG_WITH_STRCACHE2 */
+  hash_init_strcached (&directories, DIRECTORY_BUCKETS, &file_strcache,
+                       offsetof (struct directory, name));
+#endif /* CONFIG_WITH_STRCACHE2 */
+  hash_init (&directory_contents, DIRECTORY_BUCKETS,
+             directory_contents_hash_1, directory_contents_hash_2,
+             directory_contents_hash_cmp);
+#ifdef CONFIG_WITH_ALLOC_CACHES
+  alloccache_init (&directories_cache, sizeof (struct directory),
+                   "directories", NULL, NULL);
+  alloccache_init (&directory_contents_cache, sizeof (struct directory_contents),
+                   "directory_contents", NULL, NULL);
+  alloccache_init (&dirfile_cache, sizeof (struct dirfile),
+                   "dirfile", NULL, NULL);
+#endif /* CONFIG_WITH_ALLOC_CACHES */
+}
+
diff --git a/src/kmk/doc/.gitignore b/src/kmk/doc/.gitignore
new file mode 100644
index 0000000..ca68d2d
--- /dev/null
+++ b/src/kmk/doc/.gitignore
@@ -0,0 +1,22 @@
+manual/
+gendocs_template
+fdl.texi
+make-stds.texi
+stamp-vti
+version.texi
+make.info*
+make*.html
+make.aux
+make.cp
+make.cps
+make.dvi
+make.fn
+make.fns
+make.ky
+make.log
+make.pdf
+make.pg
+make.ps
+make.toc
+make.tp
+make.vr
diff --git a/src/kmk/doc/Makefile.am b/src/kmk/doc/Makefile.am
new file mode 100644
index 0000000..11aa4d4
--- /dev/null
+++ b/src/kmk/doc/Makefile.am
@@ -0,0 +1,24 @@
+# -*-Makefile-*-, or close enough
+# Copyright (C) 2000-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+TEXI2HTML = texi2html
+TEXI2HTML_FLAGS = -split_chapter
+
+info_TEXINFOS =	make.texi
+make_TEXINFOS = fdl.texi make-stds.texi
+
+CLEANFILES = make*.html
diff --git a/src/kmk/dosbuild.bat b/src/kmk/dosbuild.bat
new file mode 100644
index 0000000..71e71e1
--- /dev/null
+++ b/src/kmk/dosbuild.bat
@@ -0,0 +1,65 @@
+@echo off

+rem Copyright (C) 1998-2016 Free Software Foundation, Inc.

+rem This file is part of GNU Make.

+rem

+rem GNU Make is free software; you can redistribute it and/or modify it under

+rem the terms of the GNU General Public License as published by the Free

+rem Software Foundation; either version 3 of the License, or (at your option)

+rem any later version.

+rem

+rem GNU Make is distributed in the hope that it will be useful, but WITHOUT

+rem ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

+rem FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.

+rem more details.

+rem

+rem You should have received a copy of the GNU General Public License along

+rem with this program.  If not, see <http://www.gnu.org/licenses/>.

+

+echo Building Make for MSDOS

+

+rem Echo ON so they will see what is going on.

+@echo on

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g commands.c -o commands.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g output.c -o output.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g job.c -o job.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g dir.c -o dir.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g file.c -o file.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g misc.c -o misc.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g main.c -o main.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -DINCLUDEDIR=\"c:/djgpp/include\" -O2 -g read.c -o read.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -DLIBDIR=\"c:/djgpp/lib\" -O2 -g remake.c -o remake.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g rule.c -o rule.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g implicit.c -o implicit.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g default.c -o default.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g variable.c -o variable.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g expand.c -o expand.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g function.c -o function.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g vpath.c -o vpath.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g hash.c -o hash.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g strcache.c -o strcache.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g version.c -o version.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g ar.c -o ar.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g arscan.c -o arscan.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g signame.c -o signame.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g remote-stub.c -o remote-stub.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g getopt.c -o getopt.o

+gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g getopt1.c -o getopt1.o

+@cd glob

+@if exist libglob.a del libglob.a

+gcc -I. -c -DHAVE_CONFIG_H -I.. -O2 -g glob.c -o glob.o

+gcc -I. -c -DHAVE_CONFIG_H -I.. -O2 -g fnmatch.c -o fnmatch.o

+ar rv libglob.a glob.o fnmatch.o

+@echo off

+cd ..

+echo commands.o > respf.$$$

+for %%f in (job output dir file misc main read remake rule implicit default variable) do echo %%f.o >> respf.$$$

+for %%f in (expand function vpath hash strcache version ar arscan signame remote-stub getopt getopt1) do echo %%f.o >> respf.$$$

+echo glob/libglob.a >> respf.$$$

+rem gcc  -c -I. -I./glob -DHAVE_CONFIG_H -O2 -g guile.c -o guile.o

+rem echo guile.o >> respf.$$$

+@echo Linking...

+@echo on

+gcc -o make.new @respf.$$$

+@if exist make.exe echo Make.exe is now built!

+@if not exist make.exe echo Make.exe build failed...

+@if exist make.exe del respf.$$$

diff --git a/src/kmk/electric.c b/src/kmk/electric.c
new file mode 100644
index 0000000..b033073
--- /dev/null
+++ b/src/kmk/electric.c
@@ -0,0 +1,220 @@
+/* $Id: electric.c 2798 2015-09-19 20:35:03Z bird $ */
+/** @file
+ * A simple electric heap implementation.
+ */
+
+/*
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifdef ELECTRIC_HEAP
+
+# ifdef WINDOWS32
+#  include <windows.h>
+# else
+#  include <sys/mman.h>
+#  include <errno.h>
+#  include <stdint.h>
+# endif
+# include <string.h>
+# include <stdlib.h>
+# include <stdio.h>
+
+
+# define FREED_ENTRIES 512
+static struct
+{
+  void *ptr;
+  unsigned aligned;
+} freed[FREED_ENTRIES];
+static unsigned freed_head = 0;
+static unsigned freed_tail = 0;
+
+
+static void fatal_error (const char *msg)
+{
+#ifdef _MSC_VER
+  fprintf (stderr, "electric heap error: %s\n", msg);
+  __debugbreak ();
+#else
+  fprintf (stderr, "electric heap error: %s (errno=%d)\n", msg, errno);
+  __asm__ ("int3"); /* not portable... */
+#endif
+  abort ();
+  exit (1);
+}
+
+static void free_it (void *ptr, unsigned aligned)
+{
+# ifdef WINDOWS32
+  if (!VirtualFree (ptr, 0, MEM_RELEASE))
+    fatal_error ("VirtualFree failed");
+# else
+  if (munmap(ptr, aligned))
+    fatal_error ("munmap failed");
+# endif
+}
+
+/* Return 1 if something was freed, 0 otherwise. */
+static int free_up_some (void)
+{
+  if (freed_tail == freed_head)
+    return 0;
+  free_it (freed[freed_tail].ptr, freed[freed_tail].aligned);
+  freed[freed_tail].ptr = NULL;
+  freed[freed_tail].aligned = 0;
+  freed_tail = (freed_tail + 1) % FREED_ENTRIES;
+  return 1;
+}
+
+static unsigned *get_hdr (void *ptr)
+{
+  if (((uintptr_t)ptr & 0xfff) < sizeof(unsigned))
+    return (unsigned *)(((uintptr_t)ptr - 0x1000) & ~0xfff);
+  return (unsigned *)((uintptr_t)ptr & ~0xfff);
+}
+
+void xfree (void *ptr)
+{
+  unsigned int size, aligned;
+  unsigned *hdr;
+# ifdef WINDOWS32
+  DWORD fFlags = PAGE_NOACCESS;
+# endif
+
+  if (!ptr)
+    return;
+
+  hdr = get_hdr (ptr);
+  size = *hdr;
+  aligned = (size + 0x1fff + sizeof(unsigned)) & ~0xfff;
+# ifdef WINDOWS32
+  if (!VirtualProtect (hdr, aligned - 0x1000, fFlags, &fFlags))
+    fatal_error ("failed to protect freed memory");
+# else
+  if (mprotect(hdr, aligned - 0x1000, PROT_NONE))
+    fatal_error ("failed to protect freed memory");
+# endif
+
+  freed[freed_head].ptr = hdr;
+  freed[freed_head].aligned = aligned;
+  if (((freed_head + 1) % FREED_ENTRIES) == freed_tail)
+    free_up_some();
+  freed_head = (freed_head + 1) % FREED_ENTRIES;
+}
+
+void *
+xmalloc (unsigned int size)
+{
+  /* Make sure we don't allocate 0, for pre-ANSI libraries.  */
+  unsigned int aligned = (size + 0x1fff + sizeof(unsigned)) & ~0xfff;
+  unsigned *hdr;
+  unsigned i;
+  for (i = 0; i < FREED_ENTRIES; i++)
+    {
+# ifdef WINDOWS32
+      DWORD fFlags = PAGE_NOACCESS;
+      hdr = VirtualAlloc(NULL, aligned, MEM_COMMIT, PAGE_READWRITE);
+      if (hdr
+       && !VirtualProtect((char *)hdr + aligned - 0x1000, 0x1000, fFlags, &fFlags))
+        fatal_error ("failed to set guard page protection");
+# else
+      hdr = mmap(NULL, aligned, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
+      if (hdr == MAP_FAILED)
+        hdr = 0;
+      if (hdr
+       && mprotect((char *)hdr + aligned - 0x1000, 0x1000, PROT_NONE))
+        fatal_error ("failed to set guard page protection");
+# endif
+      if (hdr)
+        break;
+      if (!free_up_some ())
+        break;
+    }
+  if (hdr == 0)
+    fatal_error ("virtual memory exhausted");
+
+  *hdr = size;
+# if 0
+  return hdr + 1;
+# else
+  return (char *)hdr + aligned - 0x1000 - size;
+# endif
+}
+
+
+void *
+xcalloc (unsigned size)
+{
+    void *result;
+    result = xmalloc (size);
+    return memset (result, 0, size);
+}
+
+void *
+xrealloc (void *ptr, unsigned int size)
+{
+  void *result;
+  result = xmalloc (size);
+  if (ptr)
+    {
+      unsigned *hdr = get_hdr (ptr);
+      unsigned int oldsize = *hdr;
+      memcpy (result, ptr, oldsize >= size ? size : oldsize);
+      xfree (ptr);
+    }
+  return result;
+}
+
+char *
+xstrdup (const char *ptr)
+{
+  if (ptr)
+    {
+      size_t size = strlen (ptr) + 1;
+      char *result = xmalloc (size);
+      return memcpy (result, ptr, size);
+    }
+  return NULL;
+}
+
+# ifdef __GNUC__
+void *
+xmalloc_size_t (size_t size)
+{
+  return xmalloc(size);
+}
+
+void *
+xcalloc_size_t (size_t size, size_t items)
+{
+  return xcalloc(size * items);
+}
+
+void *
+xrealloc_size_t (void *ptr, size_t size)
+{
+  return xrealloc(ptr, size);
+}
+# endif /* __GNUC__ */
+
+#else /* !ELECTRIC_HEAP */
+extern void electric_heap_keep_ansi_c_quiet (void);
+#endif /* !ELECTRIC_HEAP */
+
diff --git a/src/kmk/electric.h b/src/kmk/electric.h
new file mode 100644
index 0000000..b655e7e
--- /dev/null
+++ b/src/kmk/electric.h
@@ -0,0 +1,66 @@
+/* $Id: electric.h 3150 2018-03-15 18:18:03Z bird $ */
+/** @file
+ * A simple electric heap implementation, wrapper header.
+ */
+
+/*
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifdef ELECTRIC_HEAP
+
+#include <stdlib.h>
+#ifdef WINDOWS32
+# include <malloc.h>
+#endif
+#include <string.h> /* strdup */
+
+void xfree (void *);
+void *xcalloc (unsigned int);
+void *xmalloc (unsigned int);
+void *xrealloc (void *, unsigned int);
+char *xstrdup (const char *);
+#ifdef __GNUC__
+void *xmalloc_size_t (size_t size);
+void *xcalloc_size_t (size_t size, size_t items);
+void *xrealloc_size_t (void *ptr, size_t size);
+#endif
+
+
+#undef  free
+//#define free(a)         xfree(a)
+#define free            xfree
+#undef  strdup
+#define strdup(a)       xstrdup(a)
+
+#undef  calloc
+#undef  malloc
+#undef  realloc
+#ifdef __GNUC__
+# define calloc(a,b)     xcalloc_size_t(a,b)
+# define malloc(a)       xmalloc_size_t(a)
+# define realloc(a,b)    xrealloc_size_t(a,b)
+#else
+# define calloc(a,b)     xcalloc((a) * (b))
+# define malloc(a)       xmalloc(a)
+# define realloc(a,b)    xrealloc((a),(b))
+#endif
+
+#endif
+
diff --git a/src/kmk/example-spaces.kmk b/src/kmk/example-spaces.kmk
new file mode 100644
index 0000000..7533002
--- /dev/null
+++ b/src/kmk/example-spaces.kmk
@@ -0,0 +1,175 @@
+# $Id: example-spaces.kmk 3316 2020-03-31 01:13:22Z bird $
+## @file
+# kBuild - examples of GNU make filename quoting (escaping).
+#
+
+#
+# Copyright (c) 2020 knut st. osmundsen <bird-kBuild-spamxx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+
+all: \
+	phoney\ space\ \ 1 \
+	phoney\ colon\:\ 2 \
+	phoney\ hash\#\ 3 \
+	phoney\ dollar$$\ 4 \
+	phoney\ slash-space\\\ 5 \
+	phoney\ slash-hash\\\#\ 6 \
+	phoney\ slash-slash-hash\\\\\#\ 7 \
+ 	phoney\ percent%\ 10 \
+	phoney\ pipe\|\ 11 \
+	phoney\ plus+\ 12 \
+	all-trailing-slashes1 \
+       all-trailing-slashes2 \
+       all-trailing-slashes3 \
+       all-trailing-spaces1 \
+       all-trailing-spaces2 \
+       all-trailing-spaces3 \
+       all-trailing-spaces4 \
+	phoney\ 19-target-trailing-space-with-padding\  ignore \
+	phoney\ 20-target-trailing-space-with-newline-padding\  ignore \
+	phoney\ 21-target-trailing-space-with-newline-padding-and-tail\ my-tail-21
+
+
+ignore:
+
+#
+# Trailing slashes are complicated in dependency lists:
+#
+
+# Variant #1: Must have a line-continutation to work if last in the list, but no extra escaping.
+# This doesn't work: all-trailing-slashes1: phoney\ trailing-slash13\
+# This doesn't work: all-trailing-slashes1: phoney\ trailing-slash13\\
+all-trailing-slashes1: phoney\ trailing-slash13\ \
+
+all-trailing-slashes2: phoney\ trailing-slash13b\ \
+	\
+	\
+	\
+
+# Variant #2: If there are more dependencies following it, we must escape the trailing slash
+all-trailing-slashes3: \
+	phoney\ trailing-slash14\\ \
+	phoney\ space\ \ 1 # whatever
+
+#
+# Trailing spaces only works if there is a target following on the same line.
+#
+all-trailing-spaces1: phoney\ 15-trailing-space\  phoney_simple
+
+# Note! No stripping spaces! Trailing space here that gets stripped instead of escaped.
+all-trailing-spaces2: phoney\ 16-no-trailing-space\ 
+
+all-trailing-spaces3: phoney\ 17-3x-escaped-newlines\ \
+\
+\
+	becomes-single-space
+
+# Note! Must have a trailing space or comment.
+all-trailing-spaces4: phoney\ 18-3x-escaped-trailing-spaces-no-newline\ \ \ #
+
+
+#
+# TODO
+#
+
+#busted:	phoney\ equal\=\ 8 \
+#impossible:	phoney\ semi\;\ 9 \
+
+
+#
+# The rules.
+#
+
+phoney_simple:
+
+phoney\ space\ \ 1:
+	echo "#1: '$@'"
+
+phoney\ colon\:\ 2:
+	echo "#2: '$@'"
+
+phoney\ hash\#\ 3 :
+	echo "#3: '$@'"
+
+phoney\ dollar$$\ 4 :
+	echo "#4: '$@'"
+
+phoney\ slash-space\\\ 5:
+	echo "#5: '$@'"
+
+phoney\ slash-hash\\\#\ 6:
+	echo "#6: '$@'"
+
+phoney\ slash-slash-hash\\\\\#\ 7:
+	echo "#7: '$@'"
+
+## This is busted:
+#phoney\ equal=\ 8:
+#	echo "#8: '$@'"
+
+## This seems impossible:
+#phoney\ semi\;:
+#	echo "#9: '$@'"
+
+phoney\ percent\%\ 10: # Note! The percent is only escaped on the target side!
+	echo "#10: '$@'"
+
+phoney\ pipe|\ 11:     # Note! The pipe is only escaped on the dependency list side!
+	echo "#11: '$@'"
+
+phoney\ plus+\ 12:
+	echo "#12: '$@'"
+
+phoney\ trailing-slash13\\:
+	echo "#13: '$@'"
+
+phoney\ trailing-slash13b\\:
+	echo "#13b: '$@'"
+
+phoney\ trailing-slash14\\:
+	echo "#14: '$@'"
+
+phoney\ 15-trailing-space\ :
+	echo "#15: '$@'"
+
+phoney\ 16-no-trailing-space\\:
+	echo "#16: '$@'"
+
+phoney\ 17-3x-escaped-newlines\ becomes-single-space:
+	echo "#17: '$@'"
+
+phoney\ 18-3x-escaped-trailing-spaces-no-newline\ \ \\:
+	echo "#18: '$@'"
+
+phoney\ 19-target-trailing-space-with-padding\   :
+	echo "#19: '$@'"
+
+phoney\ 20-target-trailing-space-with-newline-padding\   \
+\
+:
+	echo "#20: '$@'"
+
+phoney\ 21-target-trailing-space-with-newline-padding-and-tail\ \
+\
+ \
+		\
+my-tail-21:
+	echo "#21: '$@'"
+
diff --git a/src/kmk/expand.c b/src/kmk/expand.c
new file mode 100644
index 0000000..e11a35c
--- /dev/null
+++ b/src/kmk/expand.c
@@ -0,0 +1,1286 @@
+/* Variable expansion functions for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <assert.h>
+
+#include "filedef.h"
+#include "job.h"
+#include "commands.h"
+#include "variable.h"
+#include "rule.h"
+#ifdef CONFIG_WITH_COMPILER
+# include "kmk_cc_exec.h"
+#endif
+
+/* Initially, any errors reported when expanding strings will be reported
+   against the file where the error appears.  */
+const floc **expanding_var = &reading_file;
+
+/* The next two describe the variable output buffer.
+   This buffer is used to hold the variable-expansion of a line of the
+   makefile.  It is made bigger with realloc whenever it is too small.
+   variable_buffer_length is the size currently allocated.
+   variable_buffer is the address of the buffer.
+
+   For efficiency, it's guaranteed that the buffer will always have
+   VARIABLE_BUFFER_ZONE extra bytes allocated.  This allows you to add a few
+   extra chars without having to call a function.  Note you should never use
+   these bytes unless you're _sure_ you have room (you know when the buffer
+   length was last checked.  */
+
+#define VARIABLE_BUFFER_ZONE    5
+
+#ifndef KMK
+static unsigned int variable_buffer_length;
+#else
+unsigned int variable_buffer_length;
+#endif
+char *variable_buffer;
+
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+struct recycled_buffer
+{
+  struct recycled_buffer *next;
+  unsigned int length;
+};
+struct recycled_buffer *recycled_head;
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+
+
+
+#ifndef KMK
+/* Subroutine of variable_expand and friends:
+   The text to add is LENGTH chars starting at STRING to the variable_buffer.
+   The text is added to the buffer at PTR, and the updated pointer into
+   the buffer is returned as the value.  Thus, the value returned by
+   each call to variable_buffer_output should be the first argument to
+   the following call.  */
+
+char *
+variable_buffer_output (char *ptr, const char *string, unsigned int length)
+{
+  register unsigned int newlen = length + (ptr - variable_buffer);
+
+  if ((newlen + VARIABLE_BUFFER_ZONE) > variable_buffer_length)
+    {
+      unsigned int offset = ptr - variable_buffer;
+      variable_buffer_length = (newlen + 100 > 2 * variable_buffer_length
+                                ? newlen + 100
+                                : 2 * variable_buffer_length);
+      variable_buffer = xrealloc (variable_buffer, variable_buffer_length);
+      ptr = variable_buffer + offset;
+    }
+
+  memcpy (ptr, string, length);
+  return ptr + length;
+}
+#endif
+
+/* Return a pointer to the beginning of the variable buffer.  */
+
+static char *
+initialize_variable_output (void)
+{
+  /* If we don't have a variable output buffer yet, get one.  */
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  if (variable_buffer == 0)
+    {
+      struct recycled_buffer *recycled = recycled_head;
+      if (recycled)
+        {
+          recycled_head = recycled->next;
+          variable_buffer_length = recycled->length;
+          variable_buffer = (char *)recycled;
+        }
+      else
+        {
+          variable_buffer_length = 384;
+          variable_buffer = xmalloc (variable_buffer_length);
+        }
+      variable_buffer[0] = '\0';
+    }
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+  if (variable_buffer == 0)
+    {
+      variable_buffer_length = 200;
+      variable_buffer = xmalloc (variable_buffer_length);
+      variable_buffer[0] = '\0';
+    }
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+
+  return variable_buffer;
+}
+
+/* Recursively expand V.  The returned string is malloc'd.  */
+
+static char *allocated_variable_append (const struct variable *v);
+
+char *
+#ifndef CONFIG_WITH_VALUE_LENGTH
+recursively_expand_for_file (struct variable *v, struct file *file)
+#else
+recursively_expand_for_file (struct variable *v, struct file *file,
+                             unsigned int *value_lenp)
+#endif
+{
+  char *value;
+  const floc *this_var;
+  const floc **saved_varp;
+  struct variable_set_list *save = 0;
+  int set_reading = 0;
+
+  /* Don't install a new location if this location is empty.
+     This can happen for command-line variables, builtin variables, etc.  */
+  saved_varp = expanding_var;
+  if (v->fileinfo.filenm)
+    {
+      this_var = &v->fileinfo;
+      expanding_var = &this_var;
+    }
+
+  /* If we have no other file-reading context, use the variable's context. */
+  if (!reading_file)
+    {
+      set_reading = 1;
+      reading_file = &v->fileinfo;
+    }
+
+  if (v->expanding)
+    {
+      if (!v->exp_count)
+        /* Expanding V causes infinite recursion.  Lose.  */
+        OS (fatal, *expanding_var,
+            _("Recursive variable '%s' references itself (eventually)"),
+            v->name);
+      --v->exp_count;
+    }
+
+  if (file)
+    {
+      save = current_variable_set_list;
+      current_variable_set_list = file->variables;
+    }
+
+  v->expanding = 1;
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  if (v->append)
+    value = allocated_variable_append (v);
+  else
+    value = allocated_variable_expand (v->value);
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+  if (!v->append)
+    {
+      if (!IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR (v))
+        value = allocated_variable_expand_2 (v->value, v->value_length, value_lenp);
+      else
+        {
+          unsigned int len = v->value_length;
+          value = xmalloc (len + 2);
+          memcpy (value, v->value, len + 1);
+          value[len + 1] = '\0'; /* Extra terminator like allocated_variable_expand_2 returns. Why? */
+          if (value_lenp)
+            *value_lenp = len;
+        }
+    }
+  else
+    {
+      value = allocated_variable_append (v);
+      if (value_lenp)
+        *value_lenp = strlen (value);
+    }
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+  v->expanding = 0;
+
+  if (set_reading)
+    reading_file = 0;
+
+  if (file)
+    current_variable_set_list = save;
+
+  expanding_var = saved_varp;
+
+  return value;
+}
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+/* Worker for reference_variable() and kmk_exec_* that expands the recursive
+   variable V. The main difference between this and
+   recursively_expand[_for_file] is that this worker avoids the temporary
+   buffer and outputs directly into the current variable buffer (O).  */
+char *
+reference_recursive_variable (char *o, struct variable *v)
+{
+  const floc *this_var;
+  const floc **saved_varp;
+  int set_reading = 0;
+
+  /* Don't install a new location if this location is empty.
+     This can happen for command-line variables, builtin variables, etc.  */
+  saved_varp = expanding_var;
+  if (v->fileinfo.filenm)
+    {
+      this_var = &v->fileinfo;
+      expanding_var = &this_var;
+    }
+
+  /* If we have no other file-reading context, use the variable's context. */
+  if (!reading_file)
+    {
+      set_reading = 1;
+      reading_file = &v->fileinfo;
+    }
+
+  if (v->expanding)
+    {
+      if (!v->exp_count)
+        /* Expanding V causes infinite recursion.  Lose.  */
+        OS (fatal, *expanding_var,
+            _("Recursive variable `%s' references itself (eventually)"),
+            v->name);
+      --v->exp_count;
+    }
+
+  v->expanding = 1;
+  if (!v->append)
+    {
+      /* Expand directly into the variable buffer.  */
+# ifdef CONFIG_WITH_COMPILER
+      v->expand_count++;
+      if (   v->expandprog
+          || (v->expand_count == 3 && kmk_cc_compile_variable_for_expand (v)) )
+        o = kmk_exec_expand_to_var_buf (v, o);
+      else
+        variable_expand_string_2 (o, v->value, v->value_length, &o);
+# else
+      MAKE_STATS_2 (v->expand_count++);
+      variable_expand_string_2 (o, v->value, v->value_length, &o);
+# endif
+    }
+  else
+    {
+      /* XXX: Feel free to optimize appending target variables as well.  */
+      char *value = allocated_variable_append (v);
+      unsigned int value_len = strlen (value);
+      o = variable_buffer_output (o, value, value_len);
+      free (value);
+    }
+  v->expanding = 0;
+
+  if (set_reading)
+    reading_file = 0;
+
+  expanding_var = saved_varp;
+
+  return o;
+}
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+
+/* Expand a simple reference to variable NAME, which is LENGTH chars long.  */
+
+#ifdef MY_INLINE /* bird */
+MY_INLINE char *
+#else
+#if defined(__GNUC__)
+__inline
+#endif
+static char *
+#endif
+reference_variable (char *o, const char *name, unsigned int length)
+{
+  struct variable *v;
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  char *value;
+#endif
+
+  v = lookup_variable (name, length);
+
+  if (v == 0)
+    warn_undefined (name, length);
+
+  /* If there's no variable by that name or it has no value, stop now.  */
+  if (v == 0 || (*v->value == '\0' && !v->append))
+    return o;
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  assert (v->value_length == strlen (v->value));
+  if (!v->recursive || IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR (v))
+    o = variable_buffer_output (o, v->value, v->value_length);
+  else
+    o = reference_recursive_variable (o, v);
+#else  /* !CONFIG_WITH_VALUE_LENGTH */
+  value = (v->recursive ? recursively_expand (v) : v->value);
+
+  o = variable_buffer_output (o, value, strlen (value));
+
+  if (v->recursive)
+    free (value);
+#endif /* !CONFIG_WITH_VALUE_LENGTH */
+
+  return o;
+}
+
+#ifndef CONFIG_WITH_VALUE_LENGTH /* Only using variable_expand_string_2! */
+/* Scan STRING for variable references and expansion-function calls.  Only
+   LENGTH bytes of STRING are actually scanned.  If LENGTH is -1, scan until
+   a null byte is found.
+
+   Write the results to LINE, which must point into 'variable_buffer'.  If
+   LINE is NULL, start at the beginning of the buffer.
+   Return a pointer to LINE, or to the beginning of the buffer if LINE is
+   NULL.
+ */
+char *
+variable_expand_string (char *line, const char *string, long length)
+{
+  struct variable *v;
+  const char *p, *p1;
+  char *save;
+  char *o;
+  unsigned int line_offset;
+
+  if (!line)
+    line = initialize_variable_output ();
+  o = line;
+  line_offset = line - variable_buffer;
+
+  if (length == 0)
+    {
+      variable_buffer_output (o, "", 1);
+      return (variable_buffer);
+    }
+
+  /* We need a copy of STRING: due to eval, it's possible that it will get
+     freed as we process it (it might be the value of a variable that's reset
+     for example).  Also having a nil-terminated string is handy.  */
+  save = length < 0 ? xstrdup (string) : xstrndup (string, length);
+  p = save;
+
+  while (1)
+    {
+      /* Copy all following uninteresting chars all at once to the
+         variable output buffer, and skip them.  Uninteresting chars end
+         at the next $ or the end of the input.  */
+
+      p1 = strchr (p, '$');
+
+      o = variable_buffer_output (o, p, p1 != 0 ? (unsigned int)(p1 - p) : strlen (p) + 1);
+
+      if (p1 == 0)
+        break;
+      p = p1 + 1;
+
+      /* Dispatch on the char that follows the $.  */
+
+      switch (*p)
+        {
+        case '$':
+        case '\0':
+          /* $$ or $ at the end of the string means output one $ to the
+             variable output buffer.  */
+          o = variable_buffer_output (o, p1, 1);
+          break;
+
+        case '(':
+        case '{':
+          /* $(...) or ${...} is the general case of substitution.  */
+          {
+            char openparen = *p;
+            char closeparen = (openparen == '(') ? ')' : '}';
+            const char *begp;
+            const char *beg = p + 1;
+            char *op;
+            char *abeg = NULL;
+            const char *end, *colon;
+
+            op = o;
+            begp = p;
+            if (handle_function (&op, &begp))
+              {
+                o = op;
+                p = begp;
+                break;
+              }
+
+            /* Is there a variable reference inside the parens or braces?
+               If so, expand it before expanding the entire reference.  */
+
+            end = strchr (beg, closeparen);
+            if (end == 0)
+              /* Unterminated variable reference.  */
+              O (fatal, *expanding_var, _("unterminated variable reference"));
+            p1 = lindex (beg, end, '$');
+            if (p1 != 0)
+              {
+                /* BEG now points past the opening paren or brace.
+                   Count parens or braces until it is matched.  */
+                int count = 0;
+                for (p = beg; *p != '\0'; ++p)
+                  {
+                    if (*p == openparen)
+                      ++count;
+                    else if (*p == closeparen && --count < 0)
+                      break;
+                  }
+                /* If COUNT is >= 0, there were unmatched opening parens
+                   or braces, so we go to the simple case of a variable name
+                   such as '$($(a)'.  */
+                if (count < 0)
+                  {
+                    abeg = expand_argument (beg, p); /* Expand the name.  */
+                    beg = abeg;
+                    end = strchr (beg, '\0');
+                  }
+              }
+            else
+              /* Advance P to the end of this reference.  After we are
+                 finished expanding this one, P will be incremented to
+                 continue the scan.  */
+              p = end;
+
+            /* This is not a reference to a built-in function and
+               any variable references inside are now expanded.
+               Is the resultant text a substitution reference?  */
+
+            colon = lindex (beg, end, ':');
+            if (colon)
+              {
+                /* This looks like a substitution reference: $(FOO:A=B).  */
+                const char *subst_beg = colon + 1;
+                const char *subst_end = lindex (subst_beg, end, '=');
+                if (subst_end == 0)
+                  /* There is no = in sight.  Punt on the substitution
+                     reference and treat this as a variable name containing
+                     a colon, in the code below.  */
+                  colon = 0;
+                else
+                  {
+                    const char *replace_beg = subst_end + 1;
+                    const char *replace_end = end;
+
+                    /* Extract the variable name before the colon
+                       and look up that variable.  */
+                    v = lookup_variable (beg, colon - beg);
+                    if (v == 0)
+                      warn_undefined (beg, colon - beg);
+
+                    /* If the variable is not empty, perform the
+                       substitution.  */
+                    if (v != 0 && *v->value != '\0')
+                      {
+                        char *pattern, *replace, *ppercent, *rpercent;
+                        char *value = (v->recursive
+                                       ? recursively_expand (v)
+                                       : v->value);
+
+                        /* Copy the pattern and the replacement.  Add in an
+                           extra % at the beginning to use in case there
+                           isn't one in the pattern.  */
+                        pattern = alloca (subst_end - subst_beg + 2);
+                        *(pattern++) = '%';
+                        memcpy (pattern, subst_beg, subst_end - subst_beg);
+                        pattern[subst_end - subst_beg] = '\0';
+
+                        replace = alloca (replace_end - replace_beg + 2);
+                        *(replace++) = '%';
+                        memcpy (replace, replace_beg,
+                               replace_end - replace_beg);
+                        replace[replace_end - replace_beg] = '\0';
+
+                        /* Look for %.  Set the percent pointers properly
+                           based on whether we find one or not.  */
+                        ppercent = find_percent (pattern);
+                        if (ppercent)
+                          {
+                            ++ppercent;
+                            rpercent = find_percent (replace);
+                            if (rpercent)
+                              ++rpercent;
+                          }
+                        else
+                          {
+                            ppercent = pattern;
+                            rpercent = replace;
+                            --pattern;
+                            --replace;
+                          }
+
+                        o = patsubst_expand_pat (o, value, pattern, replace,
+                                                 ppercent, rpercent);
+
+                        if (v->recursive)
+                          free (value);
+                      }
+                  }
+              }
+
+            if (colon == 0)
+              /* This is an ordinary variable reference.
+                 Look up the value of the variable.  */
+                o = reference_variable (o, beg, end - beg);
+
+            free (abeg);
+          }
+          break;
+
+        default:
+          if (ISSPACE (p[-1]))
+            break;
+
+          /* A $ followed by a random char is a variable reference:
+             $a is equivalent to $(a).  */
+          o = reference_variable (o, p, 1);
+
+          break;
+        }
+
+      if (*p == '\0')
+        break;
+
+      ++p;
+    }
+
+  free (save);
+
+  variable_buffer_output (o, "", 1);
+  return (variable_buffer + line_offset);
+}
+
+#else /* CONFIG_WITH_VALUE_LENGTH */
+/* Scan STRING for variable references and expansion-function calls.  Only
+   LENGTH bytes of STRING are actually scanned.  If LENGTH is -1, scan until
+   a null byte is found.
+
+   Write the results to LINE, which must point into `variable_buffer'.  If
+   LINE is NULL, start at the beginning of the buffer.
+   Return a pointer to LINE, or to the beginning of the buffer if LINE is
+   NULL. Set EOLP to point to the string terminator.
+ */
+char *
+variable_expand_string_2 (char *line, const char *string, long length, char **eolp)
+{
+  struct variable *v;
+  const char *p, *p1, *eos;
+  char *o;
+  unsigned int line_offset;
+
+  if (!line)
+    line = initialize_variable_output();
+  o = line;
+  line_offset = line - variable_buffer;
+
+  if (length < 0)
+    length = strlen (string);
+  else
+    MY_ASSERT_MSG (string + length == (p1 = memchr (string, '\0', length)) || !p1, ("len=%ld p1=%p %s\n", length, p1, line));
+
+  /* Simple 1: Emptry string. */
+
+  if (length == 0)
+    {
+      o = variable_buffer_output (o, "\0", 2);
+      *eolp = o - 2;
+      return (variable_buffer + line_offset);
+    }
+
+  /* Simple 2: Nothing to expand. ~50% if the kBuild calls. */
+
+  p1 = (const char *)memchr (string, '$', length);
+  if (p1 == 0)
+    {
+      o = variable_buffer_output (o, string, length);
+      o = variable_buffer_output (o, "\0", 2);
+      *eolp = o - 2;
+      assert (strchr (variable_buffer + line_offset, '\0') == *eolp);
+      return (variable_buffer + line_offset);
+    }
+
+  p = string;
+  eos = p + length;
+
+  while (1)
+    {
+      /* Copy all following uninteresting chars all at once to the
+         variable output buffer, and skip them.  Uninteresting chars end
+	 at the next $ or the end of the input.  */
+
+      o = variable_buffer_output (o, p, p1 != 0 ? (p1 - p) : (eos - p));
+
+      if (p1 == 0)
+	break;
+      p = p1 + 1;
+
+      /* Dispatch on the char that follows the $.  */
+
+      switch (*p)
+	{
+	case '$':
+	  /* $$ seen means output one $ to the variable output buffer.  */
+	  o = variable_buffer_output (o, p, 1);
+	  break;
+
+	case '(':
+	case '{':
+	  /* $(...) or ${...} is the general case of substitution.  */
+	  {
+	    char openparen = *p;
+	    char closeparen = (openparen == '(') ? ')' : '}';
+            const char *begp;
+	    const char *beg = p + 1;
+	    char *op;
+            char *abeg = NULL;
+            unsigned int alen = 0;
+	    const char *end, *colon;
+
+	    op = o;
+	    begp = p;
+            end = may_be_function_name (p + 1, eos);
+	    if (    end
+                &&  handle_function (&op, &begp, end, eos))
+	      {
+		o = op;
+		p = begp;
+                MY_ASSERT_MSG (!(p1 = memchr (variable_buffer + line_offset, '\0', o - (variable_buffer + line_offset))),
+                               ("line=%p o/exp_end=%p act_end=%p\n", variable_buffer + line_offset, o, p1));
+		break;
+	      }
+
+	    /* Is there a variable reference inside the parens or braces?
+	       If so, expand it before expanding the entire reference.  */
+
+	    end = memchr (beg, closeparen, eos - beg);
+	    if (end == 0)
+              /* Unterminated variable reference.  */
+              O (fatal, *expanding_var, _("unterminated variable reference"));
+	    p1 = lindex (beg, end, '$');
+	    if (p1 != 0)
+	      {
+		/* BEG now points past the opening paren or brace.
+		   Count parens or braces until it is matched.  */
+		int count = 0;
+		for (p = beg; p < eos; ++p)
+		  {
+		    if (*p == openparen)
+		      ++count;
+		    else if (*p == closeparen && --count < 0)
+		      break;
+		  }
+		/* If COUNT is >= 0, there were unmatched opening parens
+		   or braces, so we go to the simple case of a variable name
+		   such as `$($(a)'.  */
+		if (count < 0)
+		  {
+                    unsigned int len;
+                    char saved;
+
+                     /* Expand the name.  */
+                    saved = *p;
+                    *(char *)p = '\0'; /* XXX: proove that this is safe! XXX2: shouldn't be necessary any longer! */
+                    abeg = allocated_variable_expand_3 (beg, p - beg, &len, &alen);
+                    beg = abeg;
+                    end = beg + len;
+                    *(char *)p = saved;
+		  }
+	      }
+	    else
+	      /* Advance P to the end of this reference.  After we are
+                 finished expanding this one, P will be incremented to
+                 continue the scan.  */
+	      p = end;
+
+	    /* This is not a reference to a built-in function and
+	       any variable references inside are now expanded.
+	       Is the resultant text a substitution reference?  */
+
+	    colon = lindex (beg, end, ':');
+	    if (colon)
+	      {
+		/* This looks like a substitution reference: $(FOO:A=B).  */
+		const char *subst_beg, *subst_end, *replace_beg, *replace_end;
+
+		subst_beg = colon + 1;
+		subst_end = lindex (subst_beg, end, '=');
+		if (subst_end == 0)
+		  /* There is no = in sight.  Punt on the substitution
+		     reference and treat this as a variable name containing
+		     a colon, in the code below.  */
+		  colon = 0;
+		else
+		  {
+		    replace_beg = subst_end + 1;
+		    replace_end = end;
+
+		    /* Extract the variable name before the colon
+		       and look up that variable.  */
+		    v = lookup_variable (beg, colon - beg);
+		    if (v == 0)
+		      warn_undefined (beg, colon - beg);
+
+                    /* If the variable is not empty, perform the
+                       substitution.  */
+		    if (v != 0 && *v->value != '\0')
+		      {
+			char *pattern, *replace, *ppercent, *rpercent;
+			char *value = (v->recursive
+                                       ? recursively_expand (v)
+				       : v->value);
+
+                        /* Copy the pattern and the replacement.  Add in an
+                           extra % at the beginning to use in case there
+                           isn't one in the pattern.  */
+                        pattern = alloca (subst_end - subst_beg + 2);
+                        *(pattern++) = '%';
+                        memcpy (pattern, subst_beg, subst_end - subst_beg);
+                        pattern[subst_end - subst_beg] = '\0';
+
+                        replace = alloca (replace_end - replace_beg + 2);
+                        *(replace++) = '%';
+                        memcpy (replace, replace_beg,
+                               replace_end - replace_beg);
+                        replace[replace_end - replace_beg] = '\0';
+
+                        /* Look for %.  Set the percent pointers properly
+                           based on whether we find one or not.  */
+			ppercent = find_percent (pattern);
+			if (ppercent)
+                          {
+                            ++ppercent;
+                            rpercent = find_percent (replace);
+                            if (rpercent)
+                              ++rpercent;
+                          }
+			else
+                          {
+                            ppercent = pattern;
+                            rpercent = replace;
+                            --pattern;
+                            --replace;
+                          }
+
+                        o = patsubst_expand_pat (o, value, pattern, replace,
+                                                 ppercent, rpercent);
+
+			if (v->recursive)
+			  free (value);
+		      }
+		  }
+	      }
+
+	    if (colon == 0)
+	      /* This is an ordinary variable reference.
+		 Look up the value of the variable.  */
+		o = reference_variable (o, beg, end - beg);
+
+	  if (abeg)
+            recycle_variable_buffer (abeg, alen);
+	  }
+	  break;
+
+	case '\0':
+          assert (p == eos);
+          break;
+
+	default:
+	  if (ISBLANK (p[-1])) /* XXX: This looks incorrect, previous is '$' */
+	    break;
+
+	  /* A $ followed by a random char is a variable reference:
+	     $a is equivalent to $(a).  */
+          o = reference_variable (o, p, 1);
+
+	  break;
+	}
+
+      if (++p >= eos)
+	break;
+      p1 = memchr (p, '$', eos - p);
+    }
+
+  o = variable_buffer_output (o, "\0", 2); /* KMK: compensate for the strlen + 1 that was removed above. */
+  *eolp = o - 2;
+  MY_ASSERT_MSG (strchr (variable_buffer + line_offset, '\0') == *eolp,
+                 ("expected=%d actual=%d\nlength=%ld string=%.*s\n",
+                  (int)(*eolp - variable_buffer + line_offset), (int)strlen(variable_buffer + line_offset),
+                  length, (int)length, string));
+  return (variable_buffer + line_offset);
+}
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+
+/* Scan LINE for variable references and expansion-function calls.
+   Build in 'variable_buffer' the result of expanding the references and calls.
+   Return the address of the resulting string, which is null-terminated
+   and is valid only until the next time this function is called.  */
+
+char *
+variable_expand (const char *line)
+{
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  return variable_expand_string (NULL, line, (long)-1);
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+  char *s;
+
+  /* this function is abused a lot like this: variable_expand(""). */
+  if (!*line)
+    {
+      s = variable_buffer_output (initialize_variable_output (), "\0", 2);
+      return s - 2;
+    }
+  return variable_expand_string_2 (NULL, line, (long)-1, &s);
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+}
+
+/* Expand an argument for an expansion function.
+   The text starting at STR and ending at END is variable-expanded
+   into a null-terminated string that is returned as the value.
+   This is done without clobbering 'variable_buffer' or the current
+   variable-expansion that is in progress.  */
+
+char *
+expand_argument (const char *str, const char *end)
+{
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  char *tmp, *alloc = NULL;
+  char *r;
+#endif
+
+  if (str == end)
+    return xstrdup ("");
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  if (!end || *end == '\0')
+    return allocated_variable_expand (str);
+
+  if (end - str + 1 > 1000)
+    tmp = alloc = xmalloc (end - str + 1);
+  else
+    tmp = alloca (end - str + 1);
+
+  memcpy (tmp, str, end - str);
+  tmp[end - str] = '\0';
+
+  r = allocated_variable_expand (tmp);
+
+  free (alloc);
+
+  return r;
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+  if (!end)
+      return allocated_variable_expand_2 (str, ~0U, NULL);
+  return allocated_variable_expand_2 (str, end - str, NULL);
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+}
+
+/* Expand LINE for FILE.  Error messages refer to the file and line where
+   FILE's commands were found.  Expansion uses FILE's variable set list.  */
+
+char *
+variable_expand_for_file (const char *line, struct file *file)
+{
+  char *result;
+  struct variable_set_list *savev;
+  const floc *savef;
+
+  if (file == 0)
+    return variable_expand (line);
+
+  savev = current_variable_set_list;
+  current_variable_set_list = file->variables;
+
+  savef = reading_file;
+  if (file->cmds && file->cmds->fileinfo.filenm)
+    reading_file = &file->cmds->fileinfo;
+  else
+    reading_file = 0;
+
+  result = variable_expand (line);
+
+  current_variable_set_list = savev;
+  reading_file = savef;
+
+  return result;
+}
+
+#if defined (CONFIG_WITH_VALUE_LENGTH) || defined (CONFIG_WITH_COMMANDS_FUNC)
+/* Expand LINE for FILE.  Error messages refer to the file and line where
+   FILE's commands were found.  Expansion uses FILE's variable set list.
+
+   Differs from variable_expand_for_file in that it takes a pointer to
+   where in the variable buffer to start outputting the expanded string,
+   and that it can returned the length of the string if you wish.  */
+
+char *
+variable_expand_for_file_2 (char *o, const char *line, unsigned int length,
+                            struct file *file, unsigned int *value_lenp)
+{
+  char *result;
+  struct variable_set_list *savev;
+  const floc *savef;
+  long len = length == ~0U ? (long)-1 : (long)length;
+  char *eol;
+
+  if (!o)
+    o = initialize_variable_output();
+
+  if (file == 0)
+     result = variable_expand_string_2 (o, line, len, &eol);
+  else
+    {
+      savev = current_variable_set_list;
+      current_variable_set_list = file->variables;
+
+      savef = reading_file;
+      if (file->cmds && file->cmds->fileinfo.filenm)
+        reading_file = &file->cmds->fileinfo;
+      else
+        reading_file = 0;
+
+      result = variable_expand_string_2 (o, line, len, &eol);
+
+      current_variable_set_list = savev;
+      reading_file = savef;
+    }
+
+  if (value_lenp)
+    *value_lenp = eol - result;
+
+  return result;
+}
+
+#endif /* CONFIG_WITH_VALUE_LENGTH || CONFIG_WITH_COMMANDS_FUNC */
+/* Like allocated_variable_expand, but for += target-specific variables.
+   First recursively construct the variable value from its appended parts in
+   any upper variable sets.  Then expand the resulting value.  */
+
+static char *
+variable_append (const char *name, unsigned int length,
+                 const struct variable_set_list *set, int local)
+{
+  const struct variable *v;
+  char *buf = 0;
+  /* If this set is local and the next is not a parent, then next is local.  */
+  int nextlocal = local && set->next_is_parent == 0;
+
+  /* If there's nothing left to check, return the empty buffer.  */
+  if (!set)
+    return initialize_variable_output ();
+
+  /* Try to find the variable in this variable set.  */
+  v = lookup_variable_in_set (name, length, set->set);
+
+  /* If there isn't one, or this one is private, try the set above us.  */
+  if (!v || (!local && v->private_var))
+    return variable_append (name, length, set->next, nextlocal);
+
+  /* If this variable type is append, first get any upper values.
+     If not, initialize the buffer.  */
+  if (v->append)
+    buf = variable_append (name, length, set->next, nextlocal);
+  else
+    buf = initialize_variable_output ();
+
+  /* Append this value to the buffer, and return it.
+     If we already have a value, first add a space.  */
+  if (buf > variable_buffer)
+    buf = variable_buffer_output (buf, " ", 1);
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  assert (v->value_length == strlen (v->value));
+#endif
+
+  /* Either expand it or copy it, depending.  */
+  if (! v->recursive || IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR (v))
+#ifdef CONFIG_WITH_VALUE_LENGTH
+    return variable_buffer_output (buf, v->value, v->value_length);
+#else
+    return variable_buffer_output (buf, v->value, strlen (v->value));
+#endif
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  variable_expand_string_2 (buf, v->value, v->value_length, &buf);
+  return buf;
+#else
+  buf = variable_expand_string (buf, v->value, strlen (v->value));
+  return (buf + strlen (buf));
+#endif
+}
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+/* Expands the specified string, appending it to the specified
+   variable value. */
+void
+append_expanded_string_to_variable (struct variable *v, const char *value,
+                                    unsigned int value_len, int append)
+{
+  char *p = (char *) memchr (value, '$', value_len);
+  if (!p)
+    /* fast path */
+    append_string_to_variable (v,value, value_len, append);
+  else if (value_len)
+    {
+      unsigned int off_dollar = p - (char *)value;
+
+      /* Install a fresh variable buffer. */
+      char *saved_buffer;
+      unsigned int saved_buffer_length;
+      install_variable_buffer (&saved_buffer, &saved_buffer_length);
+
+      p = variable_buffer;
+      if (append || !v->value_length)
+        {
+          /* Copy the current value into it and append a space. */
+          if (v->value_length)
+            {
+              p = variable_buffer_output (p, v->value, v->value_length);
+              p = variable_buffer_output (p, " ", 1);
+            }
+
+          /* Append the assignment value. */
+          p = variable_buffer_output (p, value, off_dollar);
+          variable_expand_string_2 (p, value + off_dollar, value_len - off_dollar, &p);
+        }
+      else
+        {
+          /* Expand the assignemnt value. */
+          p = variable_buffer_output (p, value, off_dollar);
+          variable_expand_string_2 (p, value + off_dollar, value_len - off_dollar, &p);
+
+          /* Append a space followed by the old value. */
+          p = variable_buffer_output (p, " ", 1);
+          p = variable_buffer_output (p, v->value, v->value_length + 1) - 1;
+        }
+
+      /* Replace the variable with the variable buffer. */
+#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+      if (v->rdonly_val)
+        v->rdonly_val = 0;
+      else
+#endif
+        free (v->value);
+      v->value = variable_buffer;
+      v->value_length = p - v->value;
+      v->value_alloc_len = variable_buffer_length;
+      VARIABLE_CHANGED(v);
+
+      /* Restore the variable buffer, but without freeing the current. */
+      variable_buffer = NULL;
+      restore_variable_buffer (saved_buffer, saved_buffer_length);
+    }
+  /* else: Drop empty strings. Use $(NO_SUCH_VARIABLE) if a space is wanted. */
+}
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+
+static char *
+allocated_variable_append (const struct variable *v)
+{
+  char *val;
+
+  /* Construct the appended variable value.  */
+
+  char *obuf = variable_buffer;
+  unsigned int olen = variable_buffer_length;
+
+  variable_buffer = 0;
+
+  assert ((unsigned int)v->length == strlen (v->name)); /* bird */ 
+  val = variable_append (v->name, strlen (v->name), /** @todo optimize by using v->length! */
+                         current_variable_set_list, 1);
+  variable_buffer_output (val, "", 1);
+  val = variable_buffer;
+
+  variable_buffer = obuf;
+  variable_buffer_length = olen;
+
+  return val;
+}
+
+/* Like variable_expand_for_file, but the returned string is malloc'd.
+   This function is called a lot.  It wants to be efficient.  */
+
+char *
+allocated_variable_expand_for_file (const char *line, struct file *file)
+{
+  char *value;
+
+  char *obuf = variable_buffer;
+  unsigned int olen = variable_buffer_length;
+
+  variable_buffer = 0;
+
+  value = variable_expand_for_file (line, file);
+
+  variable_buffer = obuf;
+  variable_buffer_length = olen;
+
+  return value;
+}
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+/* Handle the most common case in allocated_variable_expand_for_file
+   specially and provide some additional string length features. */
+
+char *
+allocated_variable_expand_2 (const char *line, unsigned int length,
+                             unsigned int *value_lenp)
+{
+  char *value;
+  char *obuf = variable_buffer;
+  unsigned int olen = variable_buffer_length;
+  long len = length == ~0U ? -1L : (long)length;
+  char *eol;
+
+  variable_buffer = 0;
+
+  value = variable_expand_string_2 (NULL, line, len, &eol);
+  if (value_lenp)
+    *value_lenp = eol - value;
+
+  variable_buffer = obuf;
+  variable_buffer_length = olen;
+
+  return value;
+}
+
+/* Initially created for handling a special case for variable_expand_string2
+   where the variable name is expanded and freed right afterwards.  This
+   variant allows the variable_buffer to be recycled and thus avoid bothering
+   with a slow free implementation. (Darwin is horrible slow.)  */
+
+char *
+allocated_variable_expand_3 (const char *line, unsigned int length,
+                             unsigned int *value_lenp,
+                             unsigned int *buffer_lengthp)
+{
+  char        *obuf = variable_buffer;
+  unsigned int olen = variable_buffer_length;
+  long         len  = (long)length;
+  char *value;
+  char *eol;
+
+  variable_buffer = 0;
+
+  value = variable_expand_string_2 (NULL, line, len, &eol);
+  if (value_lenp)
+    *value_lenp = eol - value;
+  *buffer_lengthp = variable_buffer_length;
+
+  variable_buffer = obuf;
+  variable_buffer_length = olen;
+
+  return value;
+}
+
+/* recycle a buffer. */
+
+void
+recycle_variable_buffer (char *buffer, unsigned int length)
+{
+    struct recycled_buffer *recycled = (struct recycled_buffer *)buffer;
+
+    assert (!(length & 31));
+    assert (length >= 384);
+    recycled->length = length;
+    recycled->next = recycled_head;
+    recycled_head = recycled;
+}
+
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+
+/* Install a new variable_buffer context, returning the current one for
+   safe-keeping.  */
+
+void
+install_variable_buffer (char **bufp, unsigned int *lenp)
+{
+  *bufp = variable_buffer;
+  *lenp = variable_buffer_length;
+
+  variable_buffer = 0;
+  initialize_variable_output ();
+}
+
+#ifdef CONFIG_WITH_COMPILER
+/* Same as install_variable_buffer, except we supply a size hint.  */
+
+char *
+install_variable_buffer_with_hint (char **bufp, unsigned int *lenp, unsigned int size_hint)
+{
+  struct recycled_buffer *recycled;
+  char *buf;
+
+  *bufp = variable_buffer;
+  *lenp = variable_buffer_length;
+
+  recycled = recycled_head;
+  if (recycled)
+    {
+      recycled_head = recycled->next;
+      variable_buffer_length = recycled->length;
+      variable_buffer = buf = (char *)recycled;
+    }
+  else
+    {
+      if (size_hint < 512)
+        variable_buffer_length = (size_hint + 1 + 63) & ~(unsigned int)63;
+      else if (size_hint < 4096)
+        variable_buffer_length = (size_hint + 1 + 1023) & ~(unsigned int)1023;
+      else
+        variable_buffer_length = (size_hint + 1 + 4095) & ~(unsigned int)4095;
+      variable_buffer = buf = xmalloc (variable_buffer_length);
+    }
+  buf[0] = '\0';
+  return buf;
+}
+#endif /* CONFIG_WITH_COMPILER */
+
+/* Restore a previously-saved variable_buffer setting (free the
+   current one). */
+
+void
+restore_variable_buffer (char *buf, unsigned int len)
+{
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  free (variable_buffer);
+#else
+  if (variable_buffer)
+    recycle_variable_buffer (variable_buffer, variable_buffer_length);
+#endif
+
+  variable_buffer = buf;
+  variable_buffer_length = len;
+}
+
+
+/* Used to make sure there is at least SIZE bytes of buffer space
+   available starting at PTR.  */
+char *
+ensure_variable_buffer_space(char *ptr, unsigned int size)
+{
+  unsigned int offset = (unsigned int)(ptr - variable_buffer);
+  assert(offset <= variable_buffer_length);
+  if (variable_buffer_length - offset < size)
+    {
+      unsigned minlen = size + offset;
+      variable_buffer_length *= 2;
+      if (variable_buffer_length < minlen + 100)
+        variable_buffer_length = (minlen + 100 + 63) & ~(unsigned int)63;
+      variable_buffer = xrealloc (variable_buffer, variable_buffer_length);
+      ptr = variable_buffer + offset;
+    }
+  return ptr;
+}
+
diff --git a/src/kmk/expreval.c b/src/kmk/expreval.c
new file mode 100644
index 0000000..61f7c7b
--- /dev/null
+++ b/src/kmk/expreval.c
@@ -0,0 +1,2387 @@
+#ifdef CONFIG_WITH_IF_CONDITIONALS
+/* $Id: expreval.c 3544 2022-01-29 02:22:03Z bird $ */
+/** @file
+ * expreval - Expressions evaluator, C / BSD make / nmake style.
+ */
+
+/*
+ * Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "makeint.h"
+#include <assert.h>
+
+#include <glob.h>
+
+#include "filedef.h"
+#include "dep.h"
+#include "job.h"
+#include "commands.h"
+#include "variable.h"
+#include "rule.h"
+#include "debug.h"
+#include "hash.h"
+#include "version_compare.h"
+#include <ctype.h>
+#ifndef _MSC_VER
+# include <stdint.h>
+#endif
+#include <stdarg.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** The max length of a string representation of a number. */
+#define EXPR_NUM_LEN  ((sizeof("-9223372036854775802") + 4) & ~3)
+
+/** The max operator stack depth. */
+#define EXPR_MAX_OPERATORS  72
+/** The max operand depth. */
+#define EXPR_MAX_OPERANDS   128
+
+/** Check if @a a_ch is a valid separator for a alphabetical binary
+ *  operator, omitting isspace. */
+#define EXPR_IS_OP_SEPARATOR_NO_SPACE(a_ch) \
+    (ispunct((a_ch)) && (a_ch) != '@' && (a_ch) != '_')
+
+/** Check if @a a_ch is a valid separator for a alphabetical binary operator. */
+#define EXPR_IS_OP_SEPARATOR(a_ch) \
+    (isspace((a_ch)) || EXPR_IS_OP_SEPARATOR_NO_SPACE(a_ch))
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/** The 64-bit signed integer type we're using. */
+#ifdef _MSC_VER
+typedef __int64 EXPRINT64;
+#else
+# include <stdint.h>
+typedef int64_t EXPRINT64;
+#endif
+
+/** Pointer to a evaluator instance. */
+typedef struct EXPR *PEXPR;
+
+
+/**
+ * Operand variable type.
+ */
+typedef enum
+{
+    /** Invalid zero entry. */
+    kExprVar_Invalid = 0,
+    /** A number. */
+    kExprVar_Num,
+    /** A string in need of expanding (perhaps). */
+    kExprVar_String,
+    /** A simple string that doesn't need expanding. */
+    kExprVar_SimpleString,
+    /** A quoted string in need of expanding (perhaps). */
+    kExprVar_QuotedString,
+    /** A simple quoted string that doesn't need expanding. */
+    kExprVar_QuotedSimpleString,
+    /** The end of the valid variable types. */
+    kExprVar_End
+} EXPRVARTYPE;
+
+/**
+ * Operand variable.
+ */
+typedef struct
+{
+    /** The variable type. */
+    EXPRVARTYPE enmType;
+    /** The variable. */
+    union
+    {
+        /** Pointer to the string. */
+        char *psz;
+        /** The variable. */
+        EXPRINT64 i;
+    } uVal;
+} EXPRVAR;
+/** Pointer to a operand variable. */
+typedef EXPRVAR *PEXPRVAR;
+/** Pointer to a const operand variable. */
+typedef EXPRVAR const *PCEXPRVAR;
+
+/**
+ * Operator return statuses.
+ */
+typedef enum
+{
+    kExprRet_Error = -1,
+    kExprRet_Ok = 0,
+    kExprRet_Operator,
+    kExprRet_Operand,
+    kExprRet_EndOfExpr,
+    kExprRet_End
+} EXPRRET;
+
+/**
+ * Operator.
+ */
+typedef struct
+{
+    /** The operator. */
+    char szOp[11];
+    /** The length of the operator string. */
+    char cchOp;
+    /** The pair operator.
+     * This is used with '(' and '?'. */
+    char chPair;
+    /** The precedence. Higher means higher. */
+    char iPrecedence;
+    /** The number of arguments it takes. */
+    signed char cArgs;
+    /** Pointer to the method implementing the operator. */
+    EXPRRET (*pfn)(PEXPR pThis);
+} EXPROP;
+/** Pointer to a const operator. */
+typedef EXPROP const *PCEXPROP;
+
+/**
+ * Expression evaluator instance.
+ */
+typedef struct EXPR
+{
+    /** The full expression. */
+    const char *pszExpr;
+    /** The current location. */
+    const char *psz;
+    /** The current file location, used for errors. */
+    const floc *pFileLoc;
+    /** Pending binary operator. */
+    PCEXPROP pPending;
+    /** Top of the operator stack. */
+    int iOp;
+    /** Top of the operand stack. */
+    int iVar;
+    /** The operator stack. */
+    PCEXPROP apOps[EXPR_MAX_OPERATORS];
+    /** The operand stack. */
+    EXPRVAR aVars[EXPR_MAX_OPERANDS];
+} EXPR;
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** Operator start character map.
+ * This indicates which characters that are starting operators and which aren't.
+ *
+ * Bit 0: Indicates that this char is used in operators.
+ * Bit 1: When bit 0 is clear, this indicates whitespace.
+ *        When bit 1 is set, this indicates whether the operator can be used
+ *        immediately next to an operand without any clear separation.
+ * Bits 2 thru 7: Index into g_aExprOps of the first operator starting with
+ *        this character.
+ */
+static unsigned char g_auchOpStartCharMap[256];
+/** Whether we've initialized the map. */
+static int g_fExprInitializedMap = 0;
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static void expr_unget_op(PEXPR pThis);
+static EXPRRET expr_get_binary_or_eoe_or_rparen(PEXPR pThis);
+
+
+
+
+/**
+ * Displays an error message.
+ *
+ * The total string length must not exceed 256 bytes.
+ *
+ * @param   pThis       The evaluator instance.
+ * @param   pszError    The message format string.
+ * @param   ...         The message format args.
+ */
+static void expr_error(PEXPR pThis, const char *pszError, ...)
+{
+    char szTmp[256];
+    va_list va;
+
+    va_start(va, pszError);
+    vsprintf(szTmp, pszError, va);
+    va_end(va);
+
+    OS(fatal,pThis->pFileLoc, "%s", szTmp);
+}
+
+
+/**
+ * Converts a number to a string.
+ *
+ * @returns pszDst.
+ * @param   pszDst  The string buffer to write into. Assumes length of EXPR_NUM_LEN.
+ * @param   iSrc    The number to convert.
+ */
+static char *expr_num_to_string(char *pszDst, EXPRINT64 iSrc)
+{
+    static const char s_szDigits[17] = "0123456789abcdef";
+    char szTmp[EXPR_NUM_LEN];
+    char *psz = &szTmp[EXPR_NUM_LEN - 1];
+    int fNegative;
+
+    fNegative = iSrc < 0;
+    if (fNegative)
+    {
+        /** @todo this isn't right for INT64_MIN. */
+        iSrc = -iSrc;
+    }
+
+    *psz = '\0';
+    do
+    {
+#if 0
+        *--psz = s_szDigits[iSrc & 0xf];
+        iSrc >>= 4;
+#else
+        *--psz = s_szDigits[iSrc % 10];
+        iSrc /= 10;
+#endif
+    } while (iSrc);
+
+#if 0
+    *--psz = 'x';
+    *--psz = '0';
+#endif
+
+    if (fNegative)
+      *--psz = '-';
+
+    /* copy it into the output buffer. */
+    return (char *)memcpy(pszDst, psz, &szTmp[EXPR_NUM_LEN] - psz);
+}
+
+
+/**
+ * Attempts to convert a (simple) string into a number.
+ *
+ * @returns status code.
+ * @param   pThis   The evaluator instance. This is optional when fQuiet is true.
+ * @param   piSrc   Where to store the numeric value on success.
+ * @param   pszSrc  The string to try convert.
+ * @param   fQuiet  Whether we should be quiet or grumpy on failure.
+ */
+static EXPRRET expr_string_to_num(PEXPR pThis, EXPRINT64 *piDst, const char *pszSrc, int fQuiet)
+{
+    EXPRRET rc = kExprRet_Ok;
+    char const *psz = pszSrc;
+    EXPRINT64 i;
+    unsigned uBase;
+    int fNegative;
+
+
+    /*
+     * Skip blanks.
+     */
+    while (ISBLANK(*psz))
+        psz++;
+
+    /*
+     * Check for '-'.
+     *
+     * At this point we will not need to deal with operators, this is
+     * just an indicator of negative numbers. If some operator ends up
+     * here it's because it came from a string expansion and thus shall
+     * not be interpreted. If this turns out to be an stupid restriction
+     * it can be fixed, but for now it stays like this.
+     */
+    fNegative = *psz == '-';
+    if (fNegative)
+        psz++;
+
+    /*
+     * Determin base.
+     *
+     * Recognize some exsotic prefixes here in addition to the two standard ones.
+     */
+    if (*psz != '0')
+        uBase = 10;
+    else if (psz[1] == 'x' || psz[1] == 'X')
+    {
+        uBase = 16;
+        psz += 2;
+    }
+    else if (psz[1] == 'b' || psz[1] == 'B')
+    {
+        uBase = 2;
+        psz += 2;
+    }
+    else if (psz[1] == 'd' || psz[1] == 'D')
+    {
+        uBase = 10;
+        psz += 2;
+    }
+    else if (psz[1] == 'o' || psz[1] == 'O')
+    {
+        uBase = 8;
+        psz += 2;
+    }
+    else if (isdigit(psz[1]) && psz[1] != '9' && psz[1] != '8')
+    {
+        uBase = 8;
+        psz++;
+    }
+    else
+        uBase = 10;
+
+    /*
+     * Convert until we hit a non-digit.
+     */
+    i = 0;
+    for (;;)
+    {
+        unsigned iDigit;
+        int ch = *psz;
+        switch (ch)
+        {
+            case '0':   iDigit =  0; break;
+            case '1':   iDigit =  1; break;
+            case '2':   iDigit =  2; break;
+            case '3':   iDigit =  3; break;
+            case '4':   iDigit =  4; break;
+            case '5':   iDigit =  5; break;
+            case '6':   iDigit =  6; break;
+            case '7':   iDigit =  7; break;
+            case '8':   iDigit =  8; break;
+            case '9':   iDigit =  9; break;
+            case 'a':
+            case 'A':   iDigit = 10; break;
+            case 'b':
+            case 'B':   iDigit = 11; break;
+            case 'c':
+            case 'C':   iDigit = 12; break;
+            case 'd':
+            case 'D':   iDigit = 13; break;
+            case 'e':
+            case 'E':   iDigit = 14; break;
+            case 'f':
+            case 'F':   iDigit = 15; break;
+
+            default:
+                /* is the rest white space? */
+                while (ISSPACE(*psz))
+                    psz++;
+                if (*psz != '\0')
+                {
+                    iDigit = uBase;
+                    break;
+                }
+                /* fall thru */
+
+            case '\0':
+                if (fNegative)
+                    i = -i;
+                *piDst = i;
+                return rc;
+        }
+        if (iDigit >= uBase)
+        {
+            if (fNegative)
+                i = -i;
+            *piDst = i;
+            if (!fQuiet)
+                expr_error(pThis, "Invalid number \"%.80s\"", pszSrc);
+            return kExprRet_Error;
+        }
+
+        /* add the digit and advance */
+        i *= uBase;
+        i += iDigit;
+        psz++;
+    }
+    /* not reached */
+}
+
+
+/**
+ * Checks if the variable is a string or not.
+ *
+ * @returns 1 if it's a string, 0 otherwise.
+ * @param   pVar    The variable.
+ */
+static int expr_var_is_string(PCEXPRVAR pVar)
+{
+    return pVar->enmType >= kExprVar_String;
+}
+
+
+/**
+ * Checks if the variable contains a string that was quoted
+ * in the expression.
+ *
+ * @returns 1 if if was a quoted string, otherwise 0.
+ * @param   pVar    The variable.
+ */
+static int expr_var_was_quoted(PCEXPRVAR pVar)
+{
+    return pVar->enmType >= kExprVar_QuotedString;
+}
+
+
+/**
+ * Deletes a variable.
+ *
+ * @param   pVar    The variable.
+ */
+static void expr_var_delete(PEXPRVAR pVar)
+{
+    if (expr_var_is_string(pVar))
+    {
+        free(pVar->uVal.psz);
+        pVar->uVal.psz = NULL;
+    }
+    pVar->enmType = kExprVar_Invalid;
+}
+
+
+/**
+ * Initializes a new variables with a sub-string value.
+ *
+ * @param   pVar    The new variable.
+ * @param   psz     The start of the string value.
+ * @param   cch     The number of chars to copy.
+ * @param   enmType The string type.
+ */
+static void expr_var_init_substring(PEXPRVAR pVar, const char *psz, size_t cch, EXPRVARTYPE enmType)
+{
+    /* convert string needing expanding into simple ones if possible.  */
+    if (    enmType == kExprVar_String
+        &&  !memchr(psz, '$', cch))
+        enmType = kExprVar_SimpleString;
+    else if (   enmType == kExprVar_QuotedString
+             && !memchr(psz, '$', cch))
+        enmType = kExprVar_QuotedSimpleString;
+
+    pVar->enmType = enmType;
+    pVar->uVal.psz = xmalloc(cch + 1);
+    memcpy(pVar->uVal.psz, psz, cch);
+    pVar->uVal.psz[cch] = '\0';
+}
+
+
+#if 0  /* unused */
+/**
+ * Initializes a new variables with a string value.
+ *
+ * @param   pVar    The new variable.
+ * @param   psz     The string value.
+ * @param   enmType The string type.
+ */
+static void expr_var_init_string(PEXPRVAR pVar, const char *psz, EXPRVARTYPE enmType)
+{
+    expr_var_init_substring(pVar, psz, strlen(psz), enmType);
+}
+
+
+/**
+ * Assigns a sub-string value to a variable.
+ *
+ * @param   pVar    The new variable.
+ * @param   psz     The start of the string value.
+ * @param   cch     The number of chars to copy.
+ * @param   enmType The string type.
+ */
+static void expr_var_assign_substring(PEXPRVAR pVar, const char *psz, size_t cch, EXPRVARTYPE enmType)
+{
+    expr_var_delete(pVar);
+    expr_var_init_substring(pVar, psz, cch, enmType);
+}
+
+
+/**
+ * Assignes a string value to a variable.
+ *
+ * @param   pVar    The variable.
+ * @param   psz     The string value.
+ * @param   enmType The string type.
+ */
+static void expr_var_assign_string(PEXPRVAR pVar, const char *psz, EXPRVARTYPE enmType)
+{
+    expr_var_delete(pVar);
+    expr_var_init_string(pVar, psz, enmType);
+}
+#endif /* unused */
+
+
+/**
+ * Simplifies a string variable.
+ *
+ * @param   pVar    The variable.
+ */
+static void expr_var_make_simple_string(PEXPRVAR pVar)
+{
+    switch (pVar->enmType)
+    {
+        case kExprVar_Num:
+        {
+            char *psz = (char *)xmalloc(EXPR_NUM_LEN);
+            expr_num_to_string(psz, pVar->uVal.i);
+            pVar->uVal.psz = psz;
+            pVar->enmType = kExprVar_SimpleString;
+            break;
+        }
+
+        case kExprVar_String:
+        case kExprVar_QuotedString:
+        {
+            char *psz;
+            assert(strchr(pVar->uVal.psz, '$'));
+
+            psz = allocated_variable_expand(pVar->uVal.psz);
+            free(pVar->uVal.psz);
+            pVar->uVal.psz = psz;
+
+            pVar->enmType = pVar->enmType == kExprVar_String
+                          ? kExprVar_SimpleString
+                          : kExprVar_QuotedSimpleString;
+            break;
+        }
+
+        case kExprVar_SimpleString:
+        case kExprVar_QuotedSimpleString:
+            /* nothing to do. */
+            break;
+
+        default:
+            assert(0);
+    }
+}
+
+
+#if 0 /* unused */
+/**
+ * Turns a variable into a string value.
+ *
+ * @param   pVar    The variable.
+ */
+static void expr_var_make_string(PEXPRVAR pVar)
+{
+    switch (pVar->enmType)
+    {
+        case kExprVar_Num:
+            expr_var_make_simple_string(pVar);
+            break;
+
+        case kExprVar_String:
+        case kExprVar_SimpleString:
+        case kExprVar_QuotedString:
+        case kExprVar_QuotedSimpleString:
+            /* nothing to do. */
+            break;
+
+        default:
+            assert(0);
+    }
+}
+#endif /* unused */
+
+
+/**
+ * Initializes a new variables with a integer value.
+ *
+ * @param   pVar    The new variable.
+ * @param   i       The integer value.
+ */
+static void expr_var_init_num(PEXPRVAR pVar, EXPRINT64 i)
+{
+    pVar->enmType = kExprVar_Num;
+    pVar->uVal.i = i;
+}
+
+
+/**
+ * Assigns a integer value to a variable.
+ *
+ * @param   pVar    The variable.
+ * @param   i       The integer value.
+ */
+static void expr_var_assign_num(PEXPRVAR pVar, EXPRINT64 i)
+{
+    expr_var_delete(pVar);
+    expr_var_init_num(pVar, i);
+}
+
+
+/**
+ * Turns the variable into a number.
+ *
+ * @returns status code.
+ * @param   pThis   The evaluator instance.
+ * @param   pVar    The variable.
+ */
+static EXPRRET expr_var_make_num(PEXPR pThis, PEXPRVAR pVar)
+{
+    switch (pVar->enmType)
+    {
+        case kExprVar_Num:
+            /* nothing to do. */
+            break;
+
+        case kExprVar_String:
+            expr_var_make_simple_string(pVar);
+            /* fall thru */
+        case kExprVar_SimpleString:
+        {
+            EXPRINT64 i;
+            EXPRRET rc = expr_string_to_num(pThis, &i, pVar->uVal.psz, 0 /* fQuiet */);
+            if (rc < kExprRet_Ok)
+                return rc;
+            expr_var_assign_num(pVar, i);
+            break;
+        }
+
+        case kExprVar_QuotedString:
+        case kExprVar_QuotedSimpleString:
+            expr_error(pThis, "Cannot convert a quoted string to a number");
+            return kExprRet_Error;
+
+        default:
+            assert(0);
+            return kExprRet_Error;
+    }
+
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Try to turn the variable into a number.
+ *
+ * @returns status code.
+ * @param   pVar    The variable.
+ */
+static EXPRRET expr_var_try_make_num(PEXPRVAR pVar)
+{
+    switch (pVar->enmType)
+    {
+        case kExprVar_Num:
+            /* nothing to do. */
+            break;
+
+        case kExprVar_String:
+            expr_var_make_simple_string(pVar);
+            /* fall thru */
+        case kExprVar_SimpleString:
+        {
+            EXPRINT64 i;
+            EXPRRET rc = expr_string_to_num(NULL, &i, pVar->uVal.psz, 1 /* fQuiet */);
+            if (rc < kExprRet_Ok)
+                return rc;
+            expr_var_assign_num(pVar, i);
+            break;
+        }
+
+        default:
+            assert(0);
+        case kExprVar_QuotedString:
+        case kExprVar_QuotedSimpleString:
+            /* can't do this */
+            return kExprRet_Error;
+    }
+
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Initializes a new variables with a boolean value.
+ *
+ * @param   pVar    The new variable.
+ * @param   f       The boolean value.
+ */
+static void expr_var_init_bool(PEXPRVAR pVar, int f)
+{
+    pVar->enmType = kExprVar_Num;
+    pVar->uVal.i = !!f;
+}
+
+
+/**
+ * Assigns a boolean value to a variable.
+ *
+ * @param   pVar    The variable.
+ * @param   f       The boolean value.
+ */
+static void expr_var_assign_bool(PEXPRVAR pVar, int f)
+{
+    expr_var_delete(pVar);
+    expr_var_init_bool(pVar, f);
+}
+
+
+/**
+ * Turns the variable into an boolean.
+ *
+ * @returns the boolean interpretation.
+ * @param   pVar    The variable.
+ */
+static int expr_var_make_bool(PEXPRVAR pVar)
+{
+    switch (pVar->enmType)
+    {
+        case kExprVar_Num:
+            pVar->uVal.i = !!pVar->uVal.i;
+            break;
+
+        case kExprVar_String:
+            expr_var_make_simple_string(pVar);
+            /* fall thru */
+        case kExprVar_SimpleString:
+        {
+            /*
+             * Try convert it to a number. If that fails, use the
+             * GNU make boolean logic - not empty string means true.
+             */
+            EXPRINT64 iVal;
+            char const *psz = pVar->uVal.psz;
+            while (ISBLANK(*psz))
+                psz++;
+            if (    *psz
+                &&  expr_string_to_num(NULL, &iVal, psz, 1 /* fQuiet */) >= kExprRet_Ok)
+                expr_var_assign_bool(pVar, iVal != 0);
+            else
+                expr_var_assign_bool(pVar, *psz != '\0');
+            break;
+        }
+
+        case kExprVar_QuotedString:
+            expr_var_make_simple_string(pVar);
+            /* fall thru */
+        case kExprVar_QuotedSimpleString:
+            /*
+             * Use GNU make boolean logic (not empty string means true).
+             * No stripping here, the string is quoted.
+             */
+            expr_var_assign_bool(pVar, *pVar->uVal.psz != '\0');
+            break;
+
+        default:
+            assert(0);
+            break;
+    }
+
+    return pVar->uVal.i;
+}
+
+
+/**
+ * Pops a varable off the stack and deletes it.
+ * @param   pThis   The evaluator instance.
+ */
+static void expr_pop_and_delete_var(PEXPR pThis)
+{
+    expr_var_delete(&pThis->aVars[pThis->iVar]);
+    pThis->iVar--;
+}
+
+
+
+/**
+ * Tries to make the variables the same type.
+ *
+ * This will not convert numbers to strings, unless one of them
+ * is a quoted string.
+ *
+ * this will try convert both to numbers if neither is quoted. Both
+ * conversions will have to suceed for this to be commited.
+ *
+ * All strings will be simplified.
+ *
+ * @returns status code. Done complaining on failure.
+ *
+ * @param   pThis   The evaluator instance.
+ * @param   pVar1   The first variable.
+ * @param   pVar2   The second variable.
+ */
+static EXPRRET expr_var_unify_types(PEXPR pThis, PEXPRVAR pVar1, PEXPRVAR pVar2, const char *pszOp)
+{
+    /*
+     * Try make the variables the same type before comparing.
+     */
+    if (    !expr_var_was_quoted(pVar1)
+        &&  !expr_var_was_quoted(pVar2))
+    {
+        if (    expr_var_is_string(pVar1)
+            ||  expr_var_is_string(pVar2))
+        {
+            if (!expr_var_is_string(pVar1))
+                expr_var_try_make_num(pVar2);
+            else if (!expr_var_is_string(pVar2))
+                expr_var_try_make_num(pVar1);
+            else
+            {
+                /*
+                 * Both are strings, simplify them then see if both can be made into numbers.
+                 */
+                EXPRINT64 iVar1;
+                EXPRINT64 iVar2;
+
+                expr_var_make_simple_string(pVar1);
+                expr_var_make_simple_string(pVar2);
+
+                if (    expr_string_to_num(NULL, &iVar1, pVar1->uVal.psz, 1 /* fQuiet */) >= kExprRet_Ok
+                    &&  expr_string_to_num(NULL, &iVar2, pVar2->uVal.psz, 1 /* fQuiet */) >= kExprRet_Ok)
+                {
+                    expr_var_assign_num(pVar1, iVar1);
+                    expr_var_assign_num(pVar2, iVar2);
+                }
+            }
+        }
+    }
+    else
+    {
+        expr_var_make_simple_string(pVar1);
+        expr_var_make_simple_string(pVar2);
+    }
+
+    /*
+     * Complain if they aren't the same type now.
+     */
+    if (expr_var_is_string(pVar1) != expr_var_is_string(pVar2))
+    {
+        expr_error(pThis, "Unable to unify types for \"%s\"", pszOp);
+        return kExprRet_Error;
+    }
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Is variable defined, unary.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_defined(PEXPR pThis)
+{
+    PEXPRVAR            pVar = &pThis->aVars[pThis->iVar];
+    struct variable    *pMakeVar;
+
+    expr_var_make_simple_string(pVar);
+    pMakeVar = lookup_variable(pVar->uVal.psz, strlen(pVar->uVal.psz));
+    expr_var_assign_bool(pVar, pMakeVar && *pMakeVar->value != '\0');
+
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Does file(/dir/whatever) exist, unary.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_exists(PEXPR pThis)
+{
+    PEXPRVAR            pVar = &pThis->aVars[pThis->iVar];
+    struct stat         st;
+
+    expr_var_make_simple_string(pVar);
+    expr_var_assign_bool(pVar, stat(pVar->uVal.psz, &st) == 0);
+
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Is target defined, unary.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_target(PEXPR pThis)
+{
+    PEXPRVAR            pVar = &pThis->aVars[pThis->iVar];
+    struct file        *pFile = NULL;
+
+    /*
+     * Because of secondary target expansion, lookup the unexpanded
+     * name first.
+     */
+#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
+    if (    pVar->enmType == kExprVar_String
+        ||  pVar->enmType == kExprVar_QuotedString)
+    {
+        pFile = lookup_file(pVar->uVal.psz);
+        if (    pFile
+            &&  !pFile->need_2nd_target_expansion)
+            pFile = NULL;
+    }
+    if (!pFile)
+#endif
+    {
+        expr_var_make_simple_string(pVar);
+        pFile = lookup_file(pVar->uVal.psz);
+    }
+
+    /*
+     * Always inspect the head of a multiple target rule
+     * and look for a file with commands.
+     */
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+    if (pFile && pFile->multi_head)
+        pFile = pFile->multi_head;
+#endif
+
+    while (pFile && !pFile->cmds)
+        pFile = pFile->prev;
+
+    expr_var_assign_bool(pVar, pFile != NULL && pFile->is_target);
+
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Convert to boolean.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_bool(PEXPR pThis)
+{
+    expr_var_make_bool(&pThis->aVars[pThis->iVar]);
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Convert to number, works on quoted strings too.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_num(PEXPR pThis)
+{
+    PEXPRVAR pVar = &pThis->aVars[pThis->iVar];
+
+    /* unquote the string */
+    if (pVar->enmType == kExprVar_QuotedSimpleString)
+        pVar->enmType = kExprVar_SimpleString;
+    else if (pVar->enmType == kExprVar_QuotedString)
+        pVar->enmType = kExprVar_String;
+
+    return expr_var_make_num(pThis, pVar);
+}
+
+
+/**
+ * Performs a strlen() on the simplified/converted string argument.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_strlen(PEXPR pThis)
+{
+    PEXPRVAR pVar = &pThis->aVars[pThis->iVar];
+
+    expr_var_make_simple_string(pVar);
+    expr_var_assign_num(pVar, strlen(pVar->uVal.psz));
+
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Convert to string (simplified and quoted)
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_str(PEXPR pThis)
+{
+    PEXPRVAR pVar = &pThis->aVars[pThis->iVar];
+
+    expr_var_make_simple_string(pVar);
+    pVar->enmType = kExprVar_QuotedSimpleString;
+
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Pluss (dummy / make_integer)
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_pluss(PEXPR pThis)
+{
+    return expr_var_make_num(pThis, &pThis->aVars[pThis->iVar]);
+}
+
+
+/**
+ * Minus (negate)
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_minus(PEXPR pThis)
+{
+    EXPRRET     rc;
+    PEXPRVAR    pVar = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_make_num(pThis, pVar);
+    if (rc >= kExprRet_Ok)
+        pVar->uVal.i = -pVar->uVal.i;
+
+    return rc;
+}
+
+
+
+/**
+ * Bitwise NOT.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_bitwise_not(PEXPR pThis)
+{
+    EXPRRET     rc;
+    PEXPRVAR    pVar = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_make_num(pThis, pVar);
+    if (rc >= kExprRet_Ok)
+        pVar->uVal.i = ~pVar->uVal.i;
+
+    return rc;
+}
+
+
+/**
+ * Logical NOT.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_logical_not(PEXPR pThis)
+{
+    PEXPRVAR    pVar = &pThis->aVars[pThis->iVar];
+
+    expr_var_make_bool(pVar);
+    pVar->uVal.i = !pVar->uVal.i;
+
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Multiplication.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_multiply(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_make_num(pThis, pVar1);
+    if (rc >= kExprRet_Ok)
+    {
+        rc = expr_var_make_num(pThis, pVar2);
+        if (rc >= kExprRet_Ok)
+            pVar1->uVal.i *= pVar2->uVal.i;
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+
+/**
+ * Division.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_divide(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_make_num(pThis, pVar1);
+    if (rc >= kExprRet_Ok)
+    {
+        rc = expr_var_make_num(pThis, pVar2);
+        if (rc >= kExprRet_Ok)
+            pVar1->uVal.i /= pVar2->uVal.i;
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+
+/**
+ * Modulus.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_modulus(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_make_num(pThis, pVar1);
+    if (rc >= kExprRet_Ok)
+    {
+        rc = expr_var_make_num(pThis, pVar2);
+        if (rc >= kExprRet_Ok)
+            pVar1->uVal.i %= pVar2->uVal.i;
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+
+/**
+ * Addition (numeric).
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_add(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_make_num(pThis, pVar1);
+    if (rc >= kExprRet_Ok)
+    {
+        rc = expr_var_make_num(pThis, pVar2);
+        if (rc >= kExprRet_Ok)
+            pVar1->uVal.i += pVar2->uVal.i;
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Subtract (numeric).
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_sub(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_make_num(pThis, pVar1);
+    if (rc >= kExprRet_Ok)
+    {
+        rc = expr_var_make_num(pThis, pVar2);
+        if (rc >= kExprRet_Ok)
+            pVar1->uVal.i -= pVar2->uVal.i;
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+/**
+ * Bitwise left shift.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_shift_left(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_make_num(pThis, pVar1);
+    if (rc >= kExprRet_Ok)
+    {
+        rc = expr_var_make_num(pThis, pVar2);
+        if (rc >= kExprRet_Ok)
+            pVar1->uVal.i <<= pVar2->uVal.i;
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Bitwise right shift.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_shift_right(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_make_num(pThis, pVar1);
+    if (rc >= kExprRet_Ok)
+    {
+        rc = expr_var_make_num(pThis, pVar2);
+        if (rc >= kExprRet_Ok)
+            pVar1->uVal.i >>= pVar2->uVal.i;
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Less than or equal, version string.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_ver_less_or_equal_than(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_unify_types(pThis, pVar1, pVar2, "vle");
+    if (rc >= kExprRet_Ok)
+    {
+        if (!expr_var_is_string(pVar1))
+            expr_var_assign_bool(pVar1, pVar1->uVal.i <= pVar2->uVal.i);
+        else
+            expr_var_assign_bool(pVar1, version_compare(pVar1->uVal.psz, pVar2->uVal.psz) <= 0);
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Less than or equal.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_less_or_equal_than(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_unify_types(pThis, pVar1, pVar2, "<=");
+    if (rc >= kExprRet_Ok)
+    {
+        if (!expr_var_is_string(pVar1))
+            expr_var_assign_bool(pVar1, pVar1->uVal.i <= pVar2->uVal.i);
+        else
+            expr_var_assign_bool(pVar1, strcmp(pVar1->uVal.psz, pVar2->uVal.psz) <= 0);
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Less than, version string.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_ver_less_than(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_unify_types(pThis, pVar1, pVar2, "vlt");
+    if (rc >= kExprRet_Ok)
+    {
+        if (!expr_var_is_string(pVar1))
+            expr_var_assign_bool(pVar1, pVar1->uVal.i < pVar2->uVal.i);
+        else
+            expr_var_assign_bool(pVar1, version_compare(pVar1->uVal.psz, pVar2->uVal.psz) < 0);
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Less than.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_less_than(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_unify_types(pThis, pVar1, pVar2, "<");
+    if (rc >= kExprRet_Ok)
+    {
+        if (!expr_var_is_string(pVar1))
+            expr_var_assign_bool(pVar1, pVar1->uVal.i < pVar2->uVal.i);
+        else
+            expr_var_assign_bool(pVar1, strcmp(pVar1->uVal.psz, pVar2->uVal.psz) < 0);
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Greater or equal than, version string.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_ver_greater_or_equal_than(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_unify_types(pThis, pVar1, pVar2, "vge");
+    if (rc >= kExprRet_Ok)
+    {
+        if (!expr_var_is_string(pVar1))
+            expr_var_assign_bool(pVar1, pVar1->uVal.i >= pVar2->uVal.i);
+        else
+            expr_var_assign_bool(pVar1, version_compare(pVar1->uVal.psz, pVar2->uVal.psz) >= 0);
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Greater or equal than.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_greater_or_equal_than(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_unify_types(pThis, pVar1, pVar2, ">=");
+    if (rc >= kExprRet_Ok)
+    {
+        if (!expr_var_is_string(pVar1))
+            expr_var_assign_bool(pVar1, pVar1->uVal.i >= pVar2->uVal.i);
+        else
+            expr_var_assign_bool(pVar1, strcmp(pVar1->uVal.psz, pVar2->uVal.psz) >= 0);
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Greater than, version string.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_ver_greater_than(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_unify_types(pThis, pVar1, pVar2, "vgt");
+    if (rc >= kExprRet_Ok)
+    {
+        if (!expr_var_is_string(pVar1))
+            expr_var_assign_bool(pVar1, pVar1->uVal.i > pVar2->uVal.i);
+        else
+            expr_var_assign_bool(pVar1, version_compare(pVar1->uVal.psz, pVar2->uVal.psz) > 0);
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Greater than.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_greater_than(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    rc = expr_var_unify_types(pThis, pVar1, pVar2, ">");
+    if (rc >= kExprRet_Ok)
+    {
+        if (!expr_var_is_string(pVar1))
+            expr_var_assign_bool(pVar1, pVar1->uVal.i > pVar2->uVal.i);
+        else
+            expr_var_assign_bool(pVar1, strcmp(pVar1->uVal.psz, pVar2->uVal.psz) > 0);
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Equal, version strings.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_ver_equal(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+    int const   fIsString1 = expr_var_is_string(pVar1);
+
+    /*
+     * The same type?
+     */
+    if (fIsString1 == expr_var_is_string(pVar2))
+    {
+        if (!fIsString1)
+            /* numbers are simple */
+            expr_var_assign_bool(pVar1, pVar1->uVal.i == pVar2->uVal.i);
+        else
+        {
+            /* try a normal string compare. */
+            expr_var_make_simple_string(pVar1);
+            expr_var_make_simple_string(pVar2);
+            if (!version_compare(pVar1->uVal.psz, pVar2->uVal.psz))
+                expr_var_assign_bool(pVar1, 1);
+            /* try convert and compare as number instead. */
+            else if (   expr_var_try_make_num(pVar1) >= kExprRet_Ok
+                     && expr_var_try_make_num(pVar2) >= kExprRet_Ok)
+                expr_var_assign_bool(pVar1, pVar1->uVal.i == pVar2->uVal.i);
+            /* ok, they really aren't equal. */
+            else
+                expr_var_assign_bool(pVar1, 0);
+        }
+    }
+    else
+    {
+        /*
+         * If the type differs, there are now two options:
+         *  1. Try convert the string to a valid number and compare the numbers.
+         *  2. Convert the non-string to a number and compare the strings.
+         */
+        if (   expr_var_try_make_num(pVar1) >= kExprRet_Ok
+            && expr_var_try_make_num(pVar2) >= kExprRet_Ok)
+            expr_var_assign_bool(pVar1, pVar1->uVal.i == pVar2->uVal.i);
+        else
+        {
+            expr_var_make_simple_string(pVar1);
+            expr_var_make_simple_string(pVar2);
+            expr_var_assign_bool(pVar1, version_compare(pVar1->uVal.psz, pVar2->uVal.psz) == 0);
+        }
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Not equal, version string.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_ver_not_equal(PEXPR pThis)
+{
+    EXPRRET rc = expr_op_ver_equal(pThis);
+    if (rc >= kExprRet_Ok)
+        rc = expr_op_logical_not(pThis);
+    return rc;
+}
+
+
+/**
+ * Equal.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_equal(PEXPR pThis)
+{
+    EXPRRET     rc = kExprRet_Ok;
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+    int const   fIsString1 = expr_var_is_string(pVar1);
+
+    /*
+     * The same type?
+     */
+    if (fIsString1 == expr_var_is_string(pVar2))
+    {
+        if (!fIsString1)
+            /* numbers are simple */
+            expr_var_assign_bool(pVar1, pVar1->uVal.i == pVar2->uVal.i);
+        else
+        {
+            /* try a normal string compare. */
+            expr_var_make_simple_string(pVar1);
+            expr_var_make_simple_string(pVar2);
+            if (!strcmp(pVar1->uVal.psz, pVar2->uVal.psz))
+                expr_var_assign_bool(pVar1, 1);
+            /* try convert and compare as number instead. */
+            else if (   expr_var_try_make_num(pVar1) >= kExprRet_Ok
+                     && expr_var_try_make_num(pVar2) >= kExprRet_Ok)
+                expr_var_assign_bool(pVar1, pVar1->uVal.i == pVar2->uVal.i);
+            /* ok, they really aren't equal. */
+            else
+                expr_var_assign_bool(pVar1, 0);
+        }
+    }
+    else
+    {
+        /*
+         * If the type differs, there are now two options:
+         *  1. Convert the string to a valid number and compare the numbers.
+         *  2. Convert an empty string to a 'false' boolean value and compare
+         *     numerically. This one is a bit questionable, so we don't try this.
+         */
+        if (   expr_var_try_make_num(pVar1) >= kExprRet_Ok
+            && expr_var_try_make_num(pVar2) >= kExprRet_Ok)
+            expr_var_assign_bool(pVar1, pVar1->uVal.i == pVar2->uVal.i);
+        else
+        {
+            expr_error(pThis, "Cannot compare strings and numbers");
+            rc = kExprRet_Error;
+        }
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return rc;
+}
+
+
+/**
+ * Not equal.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_not_equal(PEXPR pThis)
+{
+    EXPRRET rc = expr_op_equal(pThis);
+    if (rc >= kExprRet_Ok)
+        rc = expr_op_logical_not(pThis);
+    return rc;
+}
+
+
+/**
+ * Bitwise AND.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_bitwise_and(PEXPR pThis)
+{
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+    EXPRRET     rc;
+
+    rc = expr_var_make_num(pThis, pVar1);
+    if (rc >= kExprRet_Ok)
+    {
+        rc = expr_var_make_num(pThis, pVar2);
+        if (rc >= kExprRet_Ok)
+            pVar1->uVal.i &= pVar2->uVal.i;
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Bitwise XOR.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_bitwise_xor(PEXPR pThis)
+{
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+    EXPRRET     rc;
+
+    rc = expr_var_make_num(pThis, pVar1);
+    if (rc >= kExprRet_Ok)
+    {
+        rc = expr_var_make_num(pThis, pVar2);
+        if (rc >= kExprRet_Ok)
+            pVar1->uVal.i ^= pVar2->uVal.i;
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Bitwise OR.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_bitwise_or(PEXPR pThis)
+{
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+    EXPRRET     rc;
+
+    rc = expr_var_make_num(pThis, pVar1);
+    if (rc >= kExprRet_Ok)
+    {
+        rc = expr_var_make_num(pThis, pVar2);
+        if (rc >= kExprRet_Ok)
+            pVar1->uVal.i |= pVar2->uVal.i;
+    }
+
+    expr_pop_and_delete_var(pThis);
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Logical AND.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_logical_and(PEXPR pThis)
+{
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    if (   expr_var_make_bool(pVar1)
+        && expr_var_make_bool(pVar2))
+        expr_var_assign_bool(pVar1, 1);
+    else
+        expr_var_assign_bool(pVar1, 0);
+
+    expr_pop_and_delete_var(pThis);
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Logical OR.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_logical_or(PEXPR pThis)
+{
+    PEXPRVAR    pVar1 = &pThis->aVars[pThis->iVar - 1];
+    PEXPRVAR    pVar2 = &pThis->aVars[pThis->iVar];
+
+    if (   expr_var_make_bool(pVar1)
+        || expr_var_make_bool(pVar2))
+        expr_var_assign_bool(pVar1, 1);
+    else
+        expr_var_assign_bool(pVar1, 0);
+
+    expr_pop_and_delete_var(pThis);
+    return kExprRet_Ok;
+}
+
+
+/**
+ * Left parenthesis.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_left_parenthesis(PEXPR pThis)
+{
+    /*
+     * There should be a right parenthesis operator lined up for us now,
+     * eat it. If not found there is an inbalance.
+     */
+    EXPRRET rc = expr_get_binary_or_eoe_or_rparen(pThis);
+    if (    rc == kExprRet_Operator
+        &&  pThis->apOps[pThis->iOp]->szOp[0] == ')')
+    {
+        /* pop it and get another one which we can leave pending. */
+        pThis->iOp--;
+        rc = expr_get_binary_or_eoe_or_rparen(pThis);
+        if (rc >= kExprRet_Ok)
+            expr_unget_op(pThis);
+    }
+    else
+    {
+        expr_error(pThis, "Missing ')'");
+        rc = kExprRet_Error;
+    }
+
+    return rc;
+}
+
+
+/**
+ * Right parenthesis, dummy that's never actually called.
+ *
+ * @returns Status code.
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_op_right_parenthesis(PEXPR pThis)
+{
+    assert(0);
+    (void)pThis;
+    return kExprRet_Ok;
+}
+
+
+
+
+
+/**
+ * The operator table.
+ *
+ * This table is NOT ordered by precedence, but for linear search
+ * allowing for first match to return the correct operator. This
+ * means that || must come before |, or else | will match all.
+ */
+static const EXPROP g_aExprOps[] =
+{
+#define EXPR_OP(szOp, iPrecedence, cArgs, pfn)  {  szOp, sizeof(szOp) - 1, '\0', iPrecedence, cArgs, pfn }
+    /*        Name, iPrecedence,  cArgs,    pfn    */
+    EXPR_OP("defined",     90,      1,    expr_op_defined),
+    EXPR_OP("exists",      90,      1,    expr_op_exists),
+    EXPR_OP("target",      90,      1,    expr_op_target),
+    EXPR_OP("bool",        90,      1,    expr_op_bool),
+    EXPR_OP("num",         90,      1,    expr_op_num),
+    EXPR_OP("strlen",      90,      1,    expr_op_strlen),
+    EXPR_OP("str",         90,      1,    expr_op_str),
+    EXPR_OP("+",           80,      1,    expr_op_pluss),
+    EXPR_OP("-",           80,      1,    expr_op_minus),
+    EXPR_OP("~",           80,      1,    expr_op_bitwise_not),
+    EXPR_OP("*",           75,      2,    expr_op_multiply),
+    EXPR_OP("/",           75,      2,    expr_op_divide),
+    EXPR_OP("%",           75,      2,    expr_op_modulus),
+    EXPR_OP("+",           70,      2,    expr_op_add),
+    EXPR_OP("-",           70,      2,    expr_op_sub),
+    EXPR_OP("<<",          65,      2,    expr_op_shift_left),
+    EXPR_OP(">>",          65,      2,    expr_op_shift_right),
+    EXPR_OP("<=",          60,      2,    expr_op_less_or_equal_than),
+    EXPR_OP("<",           60,      2,    expr_op_less_than),
+    EXPR_OP(">=",          60,      2,    expr_op_greater_or_equal_than),
+    EXPR_OP(">",           60,      2,    expr_op_greater_than),
+    EXPR_OP("vle",         60,      2,    expr_op_ver_less_or_equal_than),
+    EXPR_OP("vlt",         60,      2,    expr_op_ver_less_than),
+    EXPR_OP("vge",         60,      2,    expr_op_ver_greater_or_equal_than),
+    EXPR_OP("vgt",         60,      2,    expr_op_ver_greater_than),
+    EXPR_OP("==",          55,      2,    expr_op_equal),
+    EXPR_OP("veq",         55,      2,    expr_op_ver_equal),
+    EXPR_OP("!=",          55,      2,    expr_op_not_equal),
+    EXPR_OP("vne",         55,      2,    expr_op_ver_not_equal),
+    EXPR_OP("!",           80,      1,    expr_op_logical_not),
+    EXPR_OP("^",           45,      2,    expr_op_bitwise_xor),
+    EXPR_OP("&&",          35,      2,    expr_op_logical_and),
+    EXPR_OP("&",           50,      2,    expr_op_bitwise_and),
+    EXPR_OP("||",          30,      2,    expr_op_logical_or),
+    EXPR_OP("|",           40,      2,    expr_op_bitwise_or),
+          { "(", 1, ')',   10,      1,    expr_op_left_parenthesis },
+          { ")", 1, '(',   10,      0,    expr_op_right_parenthesis },
+ /*       { "?", 1, ':',    5,      2,    expr_op_question },
+          { ":", 1, '?',    5,      2,    expr_op_colon }, -- too weird for now. */
+#undef EXPR_OP
+};
+
+/** Dummy end of expression fake. */
+static const EXPROP g_ExprEndOfExpOp =
+{
+            "", 0, '\0',    0,      0,    NULL
+};
+
+
+/**
+ * Initializes the opcode character map if necessary.
+ */
+static void expr_map_init(void)
+{
+    unsigned i;
+    if (g_fExprInitializedMap)
+        return;
+
+    /*
+     * Initialize it.
+     */
+    memset(&g_auchOpStartCharMap, 0, sizeof(g_auchOpStartCharMap));
+    for (i = 0; i < sizeof(g_aExprOps) / sizeof(g_aExprOps[0]); i++)
+    {
+        unsigned int ch = (unsigned int)g_aExprOps[i].szOp[0];
+        if (!g_auchOpStartCharMap[ch])
+        {
+            g_auchOpStartCharMap[ch] = (i << 2) | 1;
+            if (!isalpha(ch))
+                g_auchOpStartCharMap[ch] |= 2; /* Need no clear separation from operands. */
+        }
+    }
+
+    /* whitespace (assumes C-like locale because I'm lazy): */
+#define SET_WHITESPACE(a_ch) do {  \
+        assert(g_auchOpStartCharMap[(unsigned char)(a_ch)] == 0); \
+        g_auchOpStartCharMap[(unsigned char)(a_ch)] |= 2; \
+    } while (0)
+    SET_WHITESPACE(' ');
+    SET_WHITESPACE('\t');
+    SET_WHITESPACE('\n');
+    SET_WHITESPACE('\r');
+    SET_WHITESPACE('\v');
+    SET_WHITESPACE('\f');
+
+    g_fExprInitializedMap = 1;
+}
+
+
+/**
+ * Looks up a character in the map.
+ *
+ * @returns the value for that char, see g_auchOpStartCharMap for details.
+ * @param   ch      The character.
+ */
+static unsigned char expr_map_get(char ch)
+{
+    return g_auchOpStartCharMap[(unsigned char)ch];
+}
+
+
+/**
+ * Searches the operator table given a potential operator start char.
+ *
+ * @returns Pointer to the matching operator. NULL if not found.
+ * @param   psz     Pointer to what can be an operator.
+ * @param   uchVal  The expr_map_get value.
+ * @param   fUnary  Whether it must be an unary operator or not.
+ */
+static PCEXPROP expr_lookup_op(char const *psz, unsigned char uchVal, int fUnary)
+{
+    char ch = *psz;
+    unsigned i;
+    assert((uchVal & 2) == (isalpha(ch) ? 0 : 2));
+
+    for (i = uchVal >> 2; i < sizeof(g_aExprOps) / sizeof(g_aExprOps[0]); i++)
+    {
+        /* compare the string... */
+        if (g_aExprOps[i].szOp[0] != ch)
+            continue;
+        switch (g_aExprOps[i].cchOp)
+        {
+            case 1:
+                break;
+            case 2:
+                if (g_aExprOps[i].szOp[1] != psz[1])
+                    continue;
+                break;
+            default:
+                if (strncmp(&g_aExprOps[i].szOp[1], psz + 1, g_aExprOps[i].cchOp - 1))
+                    continue;
+                break;
+        }
+
+        /* ... and the operator type. */
+        if (fUnary == (g_aExprOps[i].cArgs == 1))
+        {
+            /* Check if we've got the needed operand separation: */
+            if (   (uchVal & 2)
+                || EXPR_IS_OP_SEPARATOR(psz[g_aExprOps[i].cchOp]))
+            {
+                /* got a match! */
+                return &g_aExprOps[i];
+            }
+        }
+    }
+
+    return NULL;
+}
+
+
+/**
+ * Ungets a binary operator.
+ *
+ * The operator is poped from the stack and put in the pending position.
+ *
+ * @param   pThis       The evaluator instance.
+ */
+static void expr_unget_op(PEXPR pThis)
+{
+    assert(pThis->pPending == NULL);
+    assert(pThis->iOp >= 0);
+
+    pThis->pPending = pThis->apOps[pThis->iOp];
+    pThis->apOps[pThis->iOp] = NULL;
+    pThis->iOp--;
+}
+
+
+
+/**
+ * Get the next token, it should be a binary operator, or the end of
+ * the expression, or a right parenthesis.
+ *
+ * The operator is pushed onto the stack and the status code indicates
+ * which of the two we found.
+ *
+ * @returns status code. Will grumble on failure.
+ * @retval  kExprRet_EndOfExpr if we encountered the end of the expression.
+ * @retval  kExprRet_Operator if we encountered a binary operator or right
+ *          parenthesis. It's on the operator stack.
+ *
+ * @param   pThis       The evaluator instance.
+ */
+static EXPRRET expr_get_binary_or_eoe_or_rparen(PEXPR pThis)
+{
+    /*
+     * See if there is anything pending first.
+     */
+    PCEXPROP pOp = pThis->pPending;
+    if (pOp)
+        pThis->pPending = NULL;
+    else
+    {
+        /*
+         * Eat more of the expression.
+         */
+        char const *psz = pThis->psz;
+
+        /* spaces */
+        unsigned char uchVal;
+        char ch;
+        while (((uchVal = expr_map_get((ch = *psz))) & 3) == 2)
+            psz++;
+
+        /* see what we've got. */
+        if (ch)
+        {
+            if (uchVal & 1)
+                pOp = expr_lookup_op(psz, uchVal, 0 /* fUnary */);
+            if (!pOp)
+            {
+                expr_error(pThis, "Expected binary operator, found \"%.42s\"...", psz);
+                return kExprRet_Error;
+            }
+            psz += pOp->cchOp;
+        }
+        else
+            pOp = &g_ExprEndOfExpOp;
+        pThis->psz = psz;
+    }
+
+    /*
+     * Push it.
+     */
+    if (pThis->iOp >= EXPR_MAX_OPERATORS - 1)
+    {
+        expr_error(pThis, "Operator stack overflow");
+        return kExprRet_Error;
+    }
+    pThis->apOps[++pThis->iOp] = pOp;
+
+    return pOp->iPrecedence
+         ? kExprRet_Operator
+         : kExprRet_EndOfExpr;
+}
+
+
+
+/**
+ * Get the next token, it should be an unary operator or an operand.
+ *
+ * This will fail if encountering the end of the expression since
+ * it is implied that there should be something more.
+ *
+ * The token is pushed onto the respective stack and the status code
+ * indicates which it is.
+ *
+ * @returns status code. On failure we'll be done bitching already.
+ * @retval  kExprRet_Operator if we encountered an unary operator.
+ *          It's on the operator stack.
+ * @retval  kExprRet_Operand if we encountered an operand operator.
+ *          It's on the operand stack.
+ *
+ * @param   This        The evaluator instance.
+ */
+static EXPRRET expr_get_unary_or_operand(PEXPR pThis)
+{
+    EXPRRET       rc;
+    unsigned char uchVal;
+    PCEXPROP      pOp;
+    char const   *psz = pThis->psz;
+    char          ch;
+
+    /*
+     * Eat white space and make sure there is something after it.
+     */
+    while (((uchVal = expr_map_get((ch = *psz))) & 3) == 2)
+        psz++;
+    if (ch == '\0')
+    {
+        expr_error(pThis, "Unexpected end of expression");
+        return kExprRet_Error;
+    }
+
+    /*
+     * Is it an operator?
+     */
+    pOp = NULL;
+    if (uchVal & 1)
+        pOp = expr_lookup_op(psz, uchVal, 1 /* fUnary */);
+    if (pOp)
+    {
+        /*
+         * Push the operator onto the stack.
+         */
+        if (pThis->iVar < EXPR_MAX_OPERANDS - 1)
+        {
+            pThis->apOps[++pThis->iOp] = pOp;
+            rc = kExprRet_Operator;
+        }
+        else
+        {
+            expr_error(pThis, "Operator stack overflow");
+            rc = kExprRet_Error;
+        }
+        psz += pOp->cchOp;
+    }
+    else if (pThis->iVar < EXPR_MAX_OPERANDS - 1)
+    {
+        /*
+         * It's an operand. Figure out where it ends and
+         * push it onto the stack.
+         */
+        const char *pszStart;
+
+        rc = kExprRet_Ok;
+        if (ch == '"')
+        {
+            pszStart = ++psz;
+            while ((ch = *psz) != '\0' && ch != '"')
+                psz++;
+            expr_var_init_substring(&pThis->aVars[++pThis->iVar], pszStart, psz - pszStart, kExprVar_QuotedString);
+            if (ch != '\0')
+                psz++;
+        }
+        else if (ch == '\'')
+        {
+            pszStart = ++psz;
+            while ((ch = *psz) != '\0' && ch != '\'')
+                psz++;
+            expr_var_init_substring(&pThis->aVars[++pThis->iVar], pszStart, psz - pszStart, kExprVar_QuotedSimpleString);
+            if (ch != '\0')
+                psz++;
+        }
+        else
+        {
+            char    achPars[20];
+            int     iPar = -1;
+            char    chEndPar = '\0';
+
+            pszStart = psz;
+            while ((ch = *psz) != '\0')
+            {
+                char ch2;
+
+                /* $(adsf) or ${asdf} needs special handling. */
+                if (    ch == '$'
+                    &&  (   (ch2 = psz[1]) == '('
+                         || ch2 == '{'))
+                {
+                    psz++;
+                    if (iPar > (int)(sizeof(achPars) / sizeof(achPars[0])))
+                    {
+                        expr_error(pThis, "Too deep nesting of variable expansions");
+                        rc = kExprRet_Error;
+                        break;
+                    }
+                    achPars[++iPar] = chEndPar = ch2 == '(' ? ')' : '}';
+                }
+                else if (ch == chEndPar)
+                {
+                    iPar--;
+                    chEndPar = iPar >= 0 ? achPars[iPar] : '\0';
+                }
+                else if (!chEndPar)
+                {
+                    uchVal = expr_map_get(ch);
+                    if (uchVal == 0)
+                    { /*likely*/ }
+                    else if ((uchVal & 3) == 2 /*isspace*/)
+                        break;
+                    else if (   (uchVal & 1)
+                             && psz != pszStart  /* not at the start */
+                             && (   (uchVal & 2) /* operator without separator needs */
+                                 || EXPR_IS_OP_SEPARATOR_NO_SPACE(psz[-1])))
+                    {
+                        pOp = expr_lookup_op(psz, uchVal, 0 /* fUnary */);
+                        if (pOp)
+                            break;
+                    }
+                }
+
+                /* next */
+                psz++;
+            }
+
+            if (rc == kExprRet_Ok)
+                expr_var_init_substring(&pThis->aVars[++pThis->iVar], pszStart, psz - pszStart, kExprVar_String);
+        }
+    }
+    else
+    {
+        expr_error(pThis, "Operand stack overflow");
+        rc = kExprRet_Error;
+    }
+    pThis->psz = psz;
+
+    return rc;
+}
+
+
+/**
+ * Evaluates the current expression.
+ *
+ * @returns status code.
+ *
+ * @param   pThis       The instance.
+ */
+static EXPRRET expr_eval(PEXPR pThis)
+{
+    EXPRRET  rc;
+    PCEXPROP pOp;
+
+    /*
+     * The main loop.
+     */
+    for (;;)
+    {
+        /*
+         * Eat unary operators until we hit an operand.
+         */
+        do  rc = expr_get_unary_or_operand(pThis);
+        while (rc == kExprRet_Operator);
+        if (rc < kExprRet_Ok)
+            break;
+
+        /*
+         * Look for a binary operator, right parenthesis or end of expression.
+         */
+        rc = expr_get_binary_or_eoe_or_rparen(pThis);
+        if (rc < kExprRet_Ok)
+            break;
+        expr_unget_op(pThis);
+
+        /*
+         * Pop operators and apply them.
+         *
+         * Parenthesis will be handed via precedence, where the left parenthesis
+         * will go pop the right one and make another operator pending.
+         */
+        while (   pThis->iOp >= 0
+               && pThis->apOps[pThis->iOp]->iPrecedence >= pThis->pPending->iPrecedence)
+        {
+            pOp = pThis->apOps[pThis->iOp--];
+            assert(pThis->iVar + 1 >= pOp->cArgs);
+            rc = pOp->pfn(pThis);
+            if (rc < kExprRet_Ok)
+                break;
+        }
+        if (rc < kExprRet_Ok)
+            break;
+
+        /*
+         * Get the next binary operator or end of expression.
+         * There should be no right parenthesis here.
+         */
+        rc = expr_get_binary_or_eoe_or_rparen(pThis);
+        if (rc < kExprRet_Ok)
+            break;
+        pOp = pThis->apOps[pThis->iOp];
+        if (!pOp->iPrecedence)
+            break;  /* end of expression */
+        if (!pOp->cArgs)
+        {
+            expr_error(pThis, "Unexpected \"%s\"", pOp->szOp);
+            rc = kExprRet_Error;
+            break;
+        }
+    }
+
+    return rc;
+}
+
+
+/**
+ * Destroys the given instance.
+ *
+ * @param   pThis       The instance to destroy.
+ */
+static void expr_destroy(PEXPR pThis)
+{
+    while (pThis->iVar >= 0)
+    {
+        expr_var_delete(pThis->aVars);
+        pThis->iVar--;
+    }
+    free(pThis);
+}
+
+
+/**
+ * Instantiates an expression evaluator.
+ *
+ * @returns The instance.
+ *
+ * @param   pszExpr     What to parse.
+ *                      This must stick around until expr_destroy.
+ */
+static PEXPR expr_create(char const *pszExpr)
+{
+    PEXPR pThis = (PEXPR)xmalloc(sizeof(*pThis));
+    pThis->pszExpr = pszExpr;
+    pThis->psz = pszExpr;
+    pThis->pFileLoc = NULL;
+    pThis->pPending = NULL;
+    pThis->iVar = -1;
+    pThis->iOp = -1;
+
+    expr_map_init();
+    return pThis;
+}
+
+
+/**
+ * Evaluates the given if expression.
+ *
+ * @returns -1, 0 or 1. (GNU make conditional check convention, see read.c.)
+ * @retval  -1 if the expression is invalid.
+ * @retval  0 if the expression is true
+ * @retval  1 if the expression is false.
+ *
+ * @param   line    The expression.
+ * @param   flocp   The file location, used for errors.
+ */
+int expr_eval_if_conditionals(const char *line, const floc *flocp)
+{
+    /*
+     * Instantiate the expression evaluator and let
+     * it have a go at it.
+     */
+    int rc = -1;
+    PEXPR pExpr = expr_create(line);
+    pExpr->pFileLoc = flocp;
+    if (expr_eval(pExpr) >= kExprRet_Ok)
+    {
+        /*
+         * Convert the result (on top of the stack) to boolean and
+         * set our return value accordingly.
+         */
+        if (expr_var_make_bool(&pExpr->aVars[0]))
+            rc = 0;
+        else
+            rc = 1;
+    }
+    expr_destroy(pExpr);
+
+    return rc;
+}
+
+
+/**
+ * Evaluates the given expression and returns the result as a string.
+ *
+ * @returns variable buffer position.
+ *
+ * @param   o       The current variable buffer position.
+ * @param   expr    The expression.
+ */
+char *expr_eval_to_string(char *o, const char *expr)
+{
+    /*
+     * Instantiate the expression evaluator and let
+     * it have a go at it.
+     */
+    PEXPR pExpr = expr_create(expr);
+    if (expr_eval(pExpr) >= kExprRet_Ok)
+    {
+        /*
+         * Convert the result (on top of the stack) to a string
+         * and copy it out the variable buffer.
+         */
+        PEXPRVAR pVar = &pExpr->aVars[0];
+        expr_var_make_simple_string(pVar);
+        o = variable_buffer_output(o, pVar->uVal.psz, strlen(pVar->uVal.psz));
+    }
+    else
+        o = variable_buffer_output(o, "<expression evaluation failed>", sizeof("<expression evaluation failed>") - 1);
+    expr_destroy(pExpr);
+
+    return o;
+}
+
+
+#endif /* CONFIG_WITH_IF_CONDITIONALS */
+
diff --git a/src/kmk/file.c b/src/kmk/file.c
new file mode 100644
index 0000000..888d639
--- /dev/null
+++ b/src/kmk/file.c
@@ -0,0 +1,1458 @@
+/* Target file management for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <assert.h>
+
+#include "filedef.h"
+#include "dep.h"
+#include "job.h"
+#include "commands.h"
+#include "variable.h"
+#include "debug.h"
+#include "hash.h"
+#ifdef CONFIG_WITH_STRCACHE2
+# include <stddef.h>
+#endif
+
+
+/* Remember whether snap_deps has been invoked: we need this to be sure we
+   don't add new rules (via $(eval ...)) afterwards.  In the future it would
+   be nice to support this, but it means we'd need to re-run snap_deps() or
+   at least its functionality... it might mean changing snap_deps() to be run
+   per-file, so we can invoke it after the eval... or remembering which files
+   in the hash have been snapped (a new boolean flag?) and having snap_deps()
+   only work on files which have not yet been snapped. */
+int snapped_deps = 0;
+
+/* Hash table of files the makefile knows how to make.  */
+
+#ifndef CONFIG_WITH_STRCACHE2
+static unsigned long
+file_hash_1 (const void *key)
+{
+  return_ISTRING_HASH_1 (((struct file const *) key)->hname);
+}
+
+static unsigned long
+file_hash_2 (const void *key)
+{
+  return_ISTRING_HASH_2 (((struct file const *) key)->hname);
+}
+#endif /* !CONFIG_WITH_STRCACHE2 */
+
+static int
+file_hash_cmp (const void *x, const void *y)
+{
+#ifndef CONFIG_WITH_STRCACHE2
+  return_ISTRING_COMPARE (((struct file const *) x)->hname,
+                          ((struct file const *) y)->hname);
+#else  /* CONFIG_WITH_STRCACHE2 */
+  return ((struct file const *) x)->hname
+      == ((struct file const *) y)->hname ? 0 : -1;
+#endif /* CONFIG_WITH_STRCACHE2 */
+}
+
+static struct hash_table files;
+
+/* Whether or not .SECONDARY with no prerequisites was given.  */
+static int all_secondary = 0;
+
+/* Access the hash table of all file records.
+   lookup_file  given a name, return the struct file * for that name,
+                or nil if there is none.
+*/
+
+#ifndef CONFIG_WITH_STRCACHE2
+struct file *
+lookup_file (const char *name)
+#else  /* CONFIG_WITH_STRCACHE2 */
+MY_INLINE struct file *
+lookup_file_common (const char *name, int cached)
+#endif /* CONFIG_WITH_STRCACHE2 */
+{
+  struct file *f;
+  struct file file_key;
+#ifdef VMS
+  int want_vmsify;
+#ifndef WANT_CASE_SENSITIVE_TARGETS
+  char *lname;
+#endif
+#endif
+
+  assert (*name != '\0');
+
+  /* This is also done in parse_file_seq, so this is redundant
+     for names read from makefiles.  It is here for names passed
+     on the command line.  */
+#ifdef VMS
+   want_vmsify = (strpbrk (name, "]>:^") != NULL);
+# ifndef WANT_CASE_SENSITIVE_TARGETS
+  if (*name != '.')
+    {
+      const char *n;
+      char *ln;
+      lname = xstrdup (name);
+      for (n = name, ln = lname; *n != '\0'; ++n, ++ln)
+        *ln = isupper ((unsigned char)*n) ? tolower ((unsigned char)*n) : *n;
+      *ln = '\0';
+      name = lname;
+    }
+# endif
+
+  while (name[0] == '[' && name[1] == ']' && name[2] != '\0')
+      name += 2;
+  while (name[0] == '<' && name[1] == '>' && name[2] != '\0')
+      name += 2;
+#endif
+  while (name[0] == '.'
+#ifdef HAVE_DOS_PATHS
+         && (name[1] == '/' || name[1] == '\\')
+#else
+         && name[1] == '/'
+#endif
+         && name[2] != '\0')
+    {
+      name += 2;
+      while (*name == '/'
+#ifdef HAVE_DOS_PATHS
+             || *name == '\\'
+#endif
+             )
+        /* Skip following slashes: ".//foo" is "foo", not "/foo".  */
+        ++name;
+    }
+
+  if (*name == '\0')
+    {
+      /* It was all slashes after a dot.  */
+#if defined(_AMIGA)
+      name = "";
+#else
+      name = "./";
+#endif
+#if defined(VMS)
+      /* TODO - This section is probably not needed. */
+      if (want_vmsify)
+        name = "[]";
+#endif
+    }
+#ifndef CONFIG_WITH_STRCACHE2
+  file_key.hname = name;
+  f = hash_find_item (&files, &file_key);
+#else  /* CONFIG_WITH_STRCACHE2 */
+  if (!cached)
+    {
+      file_key.hname = strcache2_lookup_file (&file_strcache, name, strlen (name));
+      if (file_key.hname)
+        f = hash_find_item_strcached (&files, &file_key);
+      else
+        f = NULL;
+    }
+  else
+    {
+      file_key.hname = name;
+      f = hash_find_item_strcached (&files, &file_key);
+    }
+
+#endif /* CONFIG_WITH_STRCACHE2 */
+#if defined(VMS) && !defined(WANT_CASE_SENSITIVE_TARGETS)
+  if (*name != '.')
+    free (lname);
+#endif
+
+  return f;
+}
+
+#ifdef CONFIG_WITH_STRCACHE2
+/* Given a name, return the struct file * for that name,
+  or nil if there is none. */
+
+struct file *
+lookup_file (const char *name)
+{
+  return lookup_file_common (name, 0 /* cached */);
+}
+
+/* Given a name in the strcache, return the struct file * for that name,
+  or nil if there is none. */
+struct file *
+lookup_file_cached (const char *name)
+{
+  assert (strcache_iscached (name));
+  return lookup_file_common (name, 1 /* cached */);
+}
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+
+/* Look up a file record for file NAME and return it.
+   Create a new record if one doesn't exist.  NAME will be stored in the
+   new record so it should be constant or in the strcache etc.
+ */
+
+struct file *
+enter_file (const char *name)
+{
+  struct file *f;
+  struct file *new;
+  struct file **file_slot;
+  struct file file_key;
+
+  assert (*name != '\0');
+  assert (! verify_flag || strcache_iscached (name));
+
+#if defined(VMS) && !defined(WANT_CASE_SENSITIVE_TARGETS)
+  if (*name != '.')
+    {
+      const char *n;
+      char *lname, *ln;
+      lname = xstrdup (name);
+      for (n = name, ln = lname; *n != '\0'; ++n, ++ln)
+        if (isupper ((unsigned char)*n))
+          *ln = tolower ((unsigned char)*n);
+        else
+          *ln = *n;
+
+      *ln = '\0';
+      name = strcache_add (lname);
+      free (lname);
+    }
+#endif
+
+  file_key.hname = name;
+#ifndef CONFIG_WITH_STRCACHE2
+  file_slot = (struct file **) hash_find_slot (&files, &file_key);
+#else  /* CONFIG_WITH_STRCACHE2 */
+  file_slot = (struct file **) hash_find_slot_strcached (&files, &file_key);
+#endif /* CONFIG_WITH_STRCACHE2 */
+  f = *file_slot;
+  if (! HASH_VACANT (f) && !f->double_colon)
+    {
+      f->builtin = 0;
+      return f;
+    }
+
+#ifndef CONFIG_WITH_ALLOC_CACHES
+  new = xcalloc (sizeof (struct file));
+#else
+  new = alloccache_calloc (&file_cache);
+#endif
+  new->name = new->hname = name;
+  new->update_status = us_none;
+
+  if (HASH_VACANT (f))
+    {
+      new->last = new;
+      hash_insert_at (&files, new, file_slot);
+    }
+  else
+    {
+      /* There is already a double-colon entry for this file.  */
+      new->double_colon = f;
+      f->last->prev = new;
+      f->last = new;
+    }
+
+#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
+  /* Check if the name needs 2nd expansion or not. */
+  if (second_target_expansion && strchr (name, '$') != NULL)
+    new->need_2nd_target_expansion = 1;
+#endif
+
+  return new;
+}
+
+/* Rehash FILE to NAME.  This is not as simple as resetting
+   the 'hname' member, since it must be put in a new hash bucket,
+   and possibly merged with an existing file called NAME.  */
+
+void
+rehash_file (struct file *from_file, const char *to_hname)
+{
+  struct file file_key;
+  struct file **file_slot;
+  struct file *to_file;
+  struct file *deleted_file;
+  struct file *f;
+
+#ifdef CONFIG_WITH_STRCACHE2
+  assert (strcache_iscached (to_hname));
+  assert (strcache_iscached (from_file->hname));
+#endif
+
+  /* If it's already that name, we're done.  */
+  from_file->builtin = 0;
+  file_key.hname = to_hname;
+  if (! file_hash_cmp (from_file, &file_key))
+    return;
+
+  /* Find the end of the renamed list for the "from" file.  */
+  file_key.hname = from_file->hname;
+  while (from_file->renamed != 0)
+    from_file = from_file->renamed;
+  if (file_hash_cmp (from_file, &file_key))
+    /* hname changed unexpectedly!! */
+    abort ();
+
+  /* Remove the "from" file from the hash.  */
+#ifndef CONFIG_WITH_STRCACHE2
+  deleted_file = hash_delete (&files, from_file);
+#else
+  deleted_file = hash_delete_strcached (&files, from_file);
+#endif
+  if (deleted_file != from_file)
+    /* from_file isn't the one stored in files */
+    abort ();
+
+  /* Find where the newly renamed file will go in the hash.  */
+  file_key.hname = to_hname;
+#ifndef CONFIG_WITH_STRCACHE2
+  file_slot = (struct file **) hash_find_slot (&files, &file_key);
+#else  /* CONFIG_WITH_STRCACHE2 */
+  file_slot = (struct file **) hash_find_slot_strcached (&files, &file_key);
+#endif /* CONFIG_WITH_STRCACHE2 */
+  to_file = *file_slot;
+
+  /* Change the hash name for this file.  */
+  from_file->hname = to_hname;
+  for (f = from_file->double_colon; f != 0; f = f->prev)
+    f->hname = to_hname;
+
+  /* If the new name doesn't exist yet just set it to the renamed file.  */
+  if (HASH_VACANT (to_file))
+    {
+      hash_insert_at (&files, from_file, file_slot);
+      return;
+    }
+
+  /* TO_FILE already exists under TO_HNAME.
+     We must retain TO_FILE and merge FROM_FILE into it.  */
+
+  if (from_file->cmds != 0)
+    {
+      if (to_file->cmds == 0)
+        to_file->cmds = from_file->cmds;
+      else if (from_file->cmds != to_file->cmds)
+        {
+          size_t l = strlen (from_file->name);
+          /* We have two sets of commands.  We will go with the
+             one given in the rule explicitly mentioning this name,
+             but give a message to let the user know what's going on.  */
+          if (to_file->cmds->fileinfo.filenm != 0)
+            error (&from_file->cmds->fileinfo,
+                   l + strlen (to_file->cmds->fileinfo.filenm) + INTSTR_LENGTH,
+                   _("Recipe was specified for file '%s' at %s:%lu,"),
+                   from_file->name, to_file->cmds->fileinfo.filenm,
+                   to_file->cmds->fileinfo.lineno);
+          else
+            error (&from_file->cmds->fileinfo, l,
+                   _("Recipe for file '%s' was found by implicit rule search,"),
+                   from_file->name);
+          l += strlen (to_hname);
+          error (&from_file->cmds->fileinfo, l,
+                 _("but '%s' is now considered the same file as '%s'."),
+                 from_file->name, to_hname);
+          error (&from_file->cmds->fileinfo, l,
+                 _("Recipe for '%s' will be ignored in favor of the one for '%s'."),
+                 to_hname, from_file->name);
+        }
+    }
+
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  /* Merge multi target attributes and considerations.  */
+  if (from_file->multi_head)
+    {
+      if (to_file->multi_head)
+        OSS (fatal, NILF, _("can't rename/merge multi target '%s' with multi target '%s'"),
+             from_file->name, to_hname);
+
+      to_file->multi_maybe = from_file->multi_maybe;
+      to_file->multi_next  = from_file->multi_next;
+      to_file->multi_head  = f = from_file->multi_head;
+      if (f == from_file)
+        {
+          for (; f != 0; f = f->multi_next)
+              f->multi_head = to_file;
+          to_file->multi_head = to_file;
+        }
+      else
+        {
+          while (f->multi_next != from_file)
+            f = f->multi_next;
+          assert(f->multi_next == from_file);
+          f->multi_next = to_file;
+        }
+# ifdef NDEBUG
+      from_file->multi_head = to_file->multi_head;
+      from_file->multi_next = NULL;
+# else
+      from_file->multi_head = (struct file *)0x2; /* poison */
+      from_file->multi_next = (struct file *)0x8;
+# endif
+    }
+#endif
+
+  /* Merge the dependencies of the two files.  */
+
+  if (to_file->deps == 0)
+    to_file->deps = from_file->deps;
+  else
+    {
+      struct dep *deps = to_file->deps;
+      while (deps->next != 0)
+        deps = deps->next;
+      deps->next = from_file->deps;
+    }
+
+  merge_variable_set_lists (&to_file->variables, from_file->variables);
+
+  if (to_file->double_colon && from_file->is_target && !from_file->double_colon)
+    OSS (fatal, NILF, _("can't rename single-colon '%s' to double-colon '%s'"),
+         from_file->name, to_hname);
+  if (!to_file->double_colon  && from_file->double_colon)
+    {
+      if (to_file->is_target)
+        OSS (fatal, NILF,
+             _("can't rename double-colon '%s' to single-colon '%s'"),
+             from_file->name, to_hname);
+      else
+        to_file->double_colon = from_file->double_colon;
+    }
+
+  if (from_file->last_mtime > to_file->last_mtime)
+    /* %%% Kludge so -W wins on a file that gets vpathized.  */
+    to_file->last_mtime = from_file->last_mtime;
+
+  to_file->mtime_before_update = from_file->mtime_before_update;
+
+#define MERGE(field) to_file->field |= from_file->field
+  MERGE (precious);
+  MERGE (tried_implicit);
+  MERGE (updating);
+  MERGE (updated);
+  MERGE (is_target);
+  MERGE (cmd_target);
+  MERGE (phony);
+  MERGE (loaded);
+  MERGE (ignore_vpath);
+#undef MERGE
+
+  to_file->builtin = 0;
+  from_file->renamed = to_file;
+}
+
+/* Rename FILE to NAME.  This is not as simple as resetting
+   the 'name' member, since it must be put in a new hash bucket,
+   and possibly merged with an existing file called NAME.  */
+
+void
+rename_file (struct file *from_file, const char *to_hname)
+{
+  rehash_file (from_file, to_hname);
+  while (from_file)
+    {
+      from_file->name = from_file->hname;
+      from_file = from_file->prev;
+    }
+}
+
+#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
+/* Performs secondary target name expansion and then renames
+   the file using rename_file. */
+static void
+do_2nd_target_expansion (struct file *f)
+{
+   unsigned int len;
+   char *tmp_name = allocated_variable_expand_2 (
+       f->name, strcache2_get_len (&file_strcache, f->name), &len);
+   const char *name = strcache_add_len (tmp_name, len);
+   free (tmp_name);
+   rename_file (f, name);
+}
+#endif /* CONFIG_WITH_2ND_TARGET_EXPANSION */
+
+/* Remove all nonprecious intermediate files.
+   If SIG is nonzero, this was caused by a fatal signal,
+   meaning that a different message will be printed, and
+   the message will go to stderr rather than stdout.  */
+
+void
+remove_intermediates (int sig)
+{
+  struct file **file_slot;
+  struct file **file_end;
+  int doneany = 0;
+
+  /* If there's no way we will ever remove anything anyway, punt early.  */
+  if (question_flag || touch_flag || all_secondary)
+    return;
+
+  if (sig && just_print_flag)
+    return;
+
+  file_slot = (struct file **) files.ht_vec;
+  file_end = file_slot + files.ht_size;
+  for ( ; file_slot < file_end; file_slot++)
+    if (! HASH_VACANT (*file_slot))
+      {
+        struct file *f = *file_slot;
+        /* Is this file eligible for automatic deletion?
+           Yes, IFF: it's marked intermediate, it's not secondary, it wasn't
+           given on the command line, and it's either a -include makefile or
+           it's not precious.  */
+        if (f->intermediate && (f->dontcare || !f->precious)
+            && !f->secondary && !f->cmd_target)
+          {
+            int status;
+            if (f->update_status == us_none)
+              /* If nothing would have created this file yet,
+                 don't print an "rm" command for it.  */
+              continue;
+            if (just_print_flag)
+              status = 0;
+            else
+              {
+                status = unlink (f->name);
+                if (status < 0 && errno == ENOENT)
+                  continue;
+              }
+            if (!f->dontcare)
+              {
+                if (sig)
+                  OS (error, NILF,
+                      _("*** Deleting intermediate file '%s'"), f->name);
+                else
+                  {
+                    if (! doneany)
+                      DB (DB_BASIC, (_("Removing intermediate files...\n")));
+                    if (!silent_flag)
+                      {
+                        if (! doneany)
+                          {
+                            fputs ("rm ", stdout);
+                            doneany = 1;
+                          }
+                        else
+                          putchar (' ');
+                        fputs (f->name, stdout);
+                        fflush (stdout);
+                      }
+                  }
+                if (status < 0)
+                  perror_with_name ("unlink: ", f->name);
+              }
+          }
+      }
+
+  if (doneany && !sig)
+    {
+      putchar ('\n');
+      fflush (stdout);
+    }
+}
+
+/* Given a string containing prerequisites (fully expanded), break it up into
+   a struct dep list.  Enter each of these prereqs into the file database.
+ */
+struct dep *
+split_prereqs (char *p)
+{
+  struct dep *new = PARSE_FILE_SEQ (&p, struct dep, MAP_PIPE, NULL,
+                                    PARSEFS_NONE);
+
+  if (*p)
+    {
+      /* Files that follow '|' are "order-only" prerequisites that satisfy the
+         dependency by existing: their modification times are irrelevant.  */
+      struct dep *ood;
+
+      ++p;
+      ood = PARSE_SIMPLE_SEQ (&p, struct dep);
+
+      if (! new)
+        new = ood;
+      else
+        {
+          struct dep *dp;
+          for (dp = new; dp->next != NULL; dp = dp->next)
+            ;
+          dp->next = ood;
+        }
+
+      for (; ood != NULL; ood = ood->next)
+        ood->ignore_mtime = 1;
+    }
+
+  return new;
+}
+
+/* Given a list of prerequisites, enter them into the file database.
+   If STEM is set then first expand patterns using STEM.  */
+struct dep *
+enter_prereqs (struct dep *deps, const char *stem)
+{
+  struct dep *d1;
+
+  if (deps == 0)
+    return 0;
+
+  /* If we have a stem, expand the %'s.  We use patsubst_expand to translate
+     the prerequisites' patterns into plain prerequisite names.  */
+  if (stem)
+    {
+      const char *pattern = "%";
+      char *buffer = variable_expand ("");
+      struct dep *dp = deps, *dl = 0;
+
+      while (dp != 0)
+        {
+          char *percent;
+          int nl = strlen (dp->name) + 1;
+          char *nm = alloca (nl);
+          memcpy (nm, dp->name, nl);
+          percent = find_percent (nm);
+          if (percent)
+            {
+              char *o;
+
+              /* We have to handle empty stems specially, because that
+                 would be equivalent to $(patsubst %,dp->name,) which
+                 will always be empty.  */
+              if (stem[0] == '\0')
+                {
+                  memmove (percent, percent+1, strlen (percent));
+                  o = variable_buffer_output (buffer, nm, strlen (nm) + 1);
+                }
+              else
+                o = patsubst_expand_pat (buffer, stem, pattern, nm,
+                                         pattern+1, percent+1);
+
+              /* If the name expanded to the empty string, ignore it.  */
+              if (buffer[0] == '\0')
+                {
+                  struct dep *df = dp;
+                  if (dp == deps)
+                    dp = deps = deps->next;
+                  else
+                    dp = dl->next = dp->next;
+                  free_dep (df);
+                  continue;
+                }
+
+              /* Save the name.  */
+              dp->name = strcache_add_len (buffer, o - buffer);
+            }
+          dp->stem = stem;
+          dp->staticpattern = 1;
+          dl = dp;
+          dp = dp->next;
+        }
+    }
+
+  /* Enter them as files, unless they need a 2nd expansion.  */
+  for (d1 = deps; d1 != 0; d1 = d1->next)
+    {
+      if (d1->need_2nd_expansion)
+        continue;
+
+      d1->file = lookup_file (d1->name);
+      if (d1->file == 0)
+        d1->file = enter_file (d1->name);
+      d1->staticpattern = 0;
+      d1->name = 0;
+    }
+
+  return deps;
+}
+
+/* Set the intermediate flag.  */
+
+static void
+set_intermediate (const void *item)
+{
+  struct file *f = (struct file *) item;
+  f->intermediate = 1;
+}
+
+/* Expand and parse each dependency line. */
+static void
+expand_deps (struct file *f)
+{
+  struct dep *d;
+  struct dep **dp;
+  const char *file_stem = f->stem;
+  int initialized = 0;
+
+  f->updating = 0;
+
+  /* Walk through the dependencies.  For any dependency that needs 2nd
+     expansion, expand it then insert the result into the list.  */
+  dp = &f->deps;
+  d = f->deps;
+  while (d != 0)
+    {
+      char *p;
+      struct dep *new, *next;
+      char *name = (char *)d->name;
+
+      if (! d->name || ! d->need_2nd_expansion)
+        {
+          /* This one is all set already.  */
+          dp = &d->next;
+          d = d->next;
+          continue;
+        }
+
+#ifdef CONFIG_WITH_INCLUDEDEP
+      /* Dependencies loaded by includedep are ready for use and we skip
+         the expensive parsing and globbing for them.  */
+
+      if (d->includedep)
+        {
+          d->need_2nd_expansion = 0;
+          d->file = lookup_file (name);
+          if (d->file == 0)
+            d->file = enter_file (name);
+          d->name = 0;
+          free(name);
+
+          dp = &d->next;
+          d = d->next;
+          continue;
+        }
+#endif /* CONFIG_WITH_INCLUDEDEP */
+
+      /* If it's from a static pattern rule, convert the patterns into
+         "$*" so they'll expand properly.  */
+      if (d->staticpattern)
+        {
+          char *o = variable_expand ("");
+          o = subst_expand (o, name, "%", "$*", 1, 2, 0);
+          *o = '\0';
+#ifndef CONFIG_WITH_STRCACHE2
+          free (name);
+          d->name = name = xstrdup (variable_buffer); /* bird not d->name, can be reallocated */
+#else
+          d->name = strcache2_add (&file_strcache, variable_buffer, o - variable_buffer);
+#endif
+          d->staticpattern = 0;
+        }
+
+      /* We're going to do second expansion so initialize file variables for
+         the file. Since the stem for static pattern rules comes from
+         individual dep lines, we will temporarily set f->stem to d->stem.  */
+      if (!initialized)
+        {
+          initialize_file_variables (f, 0);
+          initialized = 1;
+        }
+
+      if (d->stem != 0)
+        f->stem = d->stem;
+
+#if defined(CONFIG_WITH_COMMANDS_FUNC) || defined (CONFIG_WITH_DOT_MUST_MAKE)
+      set_file_variables (f, 0 /* real call, f->deps == 0 so we're ok. */);
+#else
+      set_file_variables (f);
+#endif
+
+      p = variable_expand_for_file (d->name, f);
+
+      if (d->stem != 0)
+        f->stem = file_stem;
+
+      /* At this point we don't need the name anymore: free it.  */
+      free (name);
+
+      /* Parse the prerequisites and enter them into the file database.  */
+      new = enter_prereqs (split_prereqs (p), d->stem);
+
+      /* If there were no prereqs here (blank!) then throw this one out.  */
+      if (new == 0)
+        {
+          *dp = d->next;
+          free_dep (d);
+          d = *dp;
+          continue;
+        }
+
+      /* Add newly parsed prerequisites.  */
+      next = d->next;
+#ifdef KMK /* bird: memory leak */
+      assert(new != d);
+      free_dep (d);
+#endif
+      *dp = new;
+      for (dp = &new->next, d = new->next; d != 0; dp = &d->next, d = d->next)
+        ;
+      *dp = next;
+      d = *dp;
+    }
+}
+
+/* Reset the updating flag.  */
+
+static void
+reset_updating (const void *item)
+{
+  struct file *f = (struct file *) item;
+  f->updating = 0;
+}
+
+/* For each dependency of each file, make the 'struct dep' point
+   at the appropriate 'struct file' (which may have to be created).
+
+   Also mark the files depended on by .PRECIOUS, .PHONY, .SILENT,
+   and various other special targets.  */
+
+void
+snap_deps (void)
+{
+  struct file *f;
+  struct file *f2;
+  struct dep *d;
+
+  /* Remember that we've done this.  Once we start snapping deps we can no
+     longer define new targets.  */
+  snapped_deps = 1;
+
+#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
+  /* Perform 2nd target expansion on files which requires this. This will
+     be re-inserting (delete+insert) hash table entries so we have to use
+     hash_dump(). */
+  if (second_target_expansion)
+    {
+      struct file **file_slot_0, **file_end, **file_slot;
+# ifdef KMK /* turn on warnings here. */
+      int save = warn_undefined_variables_flag;
+      warn_undefined_variables_flag = 1;
+# endif
+
+      file_slot_0 = (struct file **) hash_dump (&files, 0, 0);
+      file_end = file_slot_0 + files.ht_fill;
+      for (file_slot = file_slot_0; file_slot < file_end; file_slot++)
+        for (f = *file_slot; f != 0; f = f->prev)
+          if (f->need_2nd_target_expansion)
+            do_2nd_target_expansion (f);
+      free (file_slot_0);
+
+# ifdef KMK
+      warn_undefined_variables_flag = save;
+# endif
+
+      /* Disable second target expansion now since we won't expand files
+         entered after this point. (Saves CPU cycles in enter_file()). */
+      second_target_expansion = 0;
+    }
+#endif /* CONFIG_WITH_2ND_TARGET_EXPANSION */
+
+#ifdef CONFIG_WITH_INCLUDEDEP
+  /* Process any queued includedep files.  Since includedep is supposed
+     to be *simple* stuff, we can do this after the second target expansion
+     and thereby save a little time.  */
+  incdep_flush_and_term ();
+#endif /* CONFIG_WITH_INCLUDEDEP */
+
+  /* Perform second expansion and enter each dependency name as a file.  We
+     must use hash_dump() here because within these loops we likely add new
+     files to the table, possibly causing an in-situ table expansion.
+
+     We only need to do this if second_expansion has been defined; if it
+     hasn't then all deps were expanded as the makefile was read in.  If we
+     ever change make to be able to unset .SECONDARY_EXPANSION this will have
+     to change.  */
+
+  if (second_expansion)
+    {
+      struct file **file_slot_0 = (struct file **) hash_dump (&files, 0, 0);
+      struct file **file_end = file_slot_0 + files.ht_fill;
+      struct file **file_slot;
+      const char *suffixes;
+
+      /* Expand .SUFFIXES: its prerequisites are used for $$* calc.  */
+      f = lookup_file (".SUFFIXES");
+      suffixes = f ? f->name : 0;
+      for (; f != 0; f = f->prev)
+        expand_deps (f);
+
+#if 0 /* def KMK - not-parallel is a performance kill, but since double-colon is werid anyway, skip this hack. */
+      /* This is a HACK to work around the still broken test #9 in
+         features/double_colon.  It produces the wrong result if the build is
+         parallel because of changed evaluation order.  Just make these
+         problematic rules execute in single field till a proper fix is
+         forthcomming...  */
+
+      for (file_slot = file_slot_0; file_slot < file_end; file_slot++)
+        if (   (f = *file_slot) != 0
+            && f->double_colon
+            && (   f->double_colon != f
+                || f->last != f))
+          for (f2 = f->double_colon; f2 != 0; f2 = f2->prev)
+            f2->command_flags |= COMMANDS_NOTPARALLEL;
+#endif /* KMK */
+
+      /* For every target that's not .SUFFIXES, expand its prerequisites.  */
+
+      for (file_slot = file_slot_0; file_slot < file_end; file_slot++)
+        for (f = *file_slot; f != 0; f = f->prev)
+          if (f->name != suffixes)
+            expand_deps (f);
+      free (file_slot_0);
+    }
+  else
+    /* We're not doing second expansion, so reset updating.  */
+    hash_map (&files, reset_updating);
+
+  /* Now manage all the special targets.  */
+
+  for (f = lookup_file (".PRECIOUS"); f != 0; f = f->prev)
+    for (d = f->deps; d != 0; d = d->next)
+      for (f2 = d->file; f2 != 0; f2 = f2->prev)
+        f2->precious = 1;
+
+  for (f = lookup_file (".LOW_RESOLUTION_TIME"); f != 0; f = f->prev)
+    for (d = f->deps; d != 0; d = d->next)
+      for (f2 = d->file; f2 != 0; f2 = f2->prev)
+        f2->low_resolution_time = 1;
+
+  for (f = lookup_file (".PHONY"); f != 0; f = f->prev)
+    for (d = f->deps; d != 0; d = d->next)
+      for (f2 = d->file; f2 != 0; f2 = f2->prev)
+        {
+          /* Mark this file as phony nonexistent target.  */
+          f2->phony = 1;
+          f2->is_target = 1;
+          f2->last_mtime = NONEXISTENT_MTIME;
+          f2->mtime_before_update = NONEXISTENT_MTIME;
+        }
+
+  for (f = lookup_file (".INTERMEDIATE"); f != 0; f = f->prev)
+    /* Mark .INTERMEDIATE deps as intermediate files.  */
+    for (d = f->deps; d != 0; d = d->next)
+      for (f2 = d->file; f2 != 0; f2 = f2->prev)
+        f2->intermediate = 1;
+    /* .INTERMEDIATE with no deps does nothing.
+       Marking all files as intermediates is useless since the goal targets
+       would be deleted after they are built.  */
+
+  for (f = lookup_file (".SECONDARY"); f != 0; f = f->prev)
+    /* Mark .SECONDARY deps as both intermediate and secondary.  */
+    if (f->deps)
+      for (d = f->deps; d != 0; d = d->next)
+        for (f2 = d->file; f2 != 0; f2 = f2->prev)
+          f2->intermediate = f2->secondary = 1;
+    /* .SECONDARY with no deps listed marks *all* files that way.  */
+    else
+      {
+        all_secondary = 1;
+        hash_map (&files, set_intermediate);
+      }
+
+  f = lookup_file (".EXPORT_ALL_VARIABLES");
+  if (f != 0 && f->is_target)
+    export_all_variables = 1;
+
+  f = lookup_file (".IGNORE");
+  if (f != 0 && f->is_target)
+    {
+      if (f->deps == 0)
+        ignore_errors_flag = 1;
+      else
+        for (d = f->deps; d != 0; d = d->next)
+          for (f2 = d->file; f2 != 0; f2 = f2->prev)
+            f2->command_flags |= COMMANDS_NOERROR;
+    }
+
+  f = lookup_file (".SILENT");
+  if (f != 0 && f->is_target)
+    {
+      if (f->deps == 0)
+        silent_flag = 1;
+      else
+        for (d = f->deps; d != 0; d = d->next)
+          for (f2 = d->file; f2 != 0; f2 = f2->prev)
+            f2->command_flags |= COMMANDS_SILENT;
+    }
+
+  f = lookup_file (".NOTPARALLEL");
+  if (f != 0 && f->is_target)
+#ifndef CONFIG_WITH_EXTENDED_NOTPARALLEL
+    not_parallel = 1;
+#else /* CONFIG_WITH_EXTENDED_NOTPARALLEL */
+    {
+      if (f->deps == 0)
+        {
+          DB (DB_KMK, (_("not_parallel -1\n")));
+          not_parallel = -1;
+        }
+      else
+        for (d = f->deps; d != 0; d = d->next)
+          for (f2 = d->file; f2 != 0; f2 = f2->prev)
+            f2->command_flags |= COMMANDS_NOTPARALLEL;
+    }
+#endif /* CONFIG_WITH_EXTENDED_NOTPARALLEL */
+
+#ifndef NO_MINUS_C_MINUS_O
+  /* If .POSIX was defined, remove OUTPUT_OPTION to comply.  */
+  /* This needs more work: what if the user sets this in the makefile?
+  if (posix_pedantic)
+    define_variable_cname ("OUTPUT_OPTION", "", o_default, 1);
+  */
+#endif
+}
+
+/* Set the 'command_state' member of FILE and all its 'also_make's.  */
+
+void
+set_command_state (struct file *file, enum cmd_state state)
+{
+  struct dep *d;
+
+  file->command_state = state;
+
+  for (d = file->also_make; d != 0; d = d->next)
+    d->file->command_state = state;
+
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  if (file->multi_head)
+    for (file = file->multi_head; file != 0; file = file->multi_next)
+      file->command_state = state;
+#endif
+}
+
+/* Convert an external file timestamp to internal form.  */
+
+FILE_TIMESTAMP
+file_timestamp_cons (const char *fname, time_t stamp, long int ns)
+{
+  int offset = ORDINARY_MTIME_MIN + (FILE_TIMESTAMP_HI_RES ? ns : 0);
+  FILE_TIMESTAMP s = stamp;
+  FILE_TIMESTAMP product = (FILE_TIMESTAMP) s << FILE_TIMESTAMP_LO_BITS;
+  FILE_TIMESTAMP ts = product + offset;
+
+  if (! (s <= FILE_TIMESTAMP_S (ORDINARY_MTIME_MAX)
+         && product <= ts && ts <= ORDINARY_MTIME_MAX))
+    {
+      char buf[FILE_TIMESTAMP_PRINT_LEN_BOUND + 1];
+      const char *f = fname ? fname : _("Current time");
+      ts = s <= OLD_MTIME ? ORDINARY_MTIME_MIN : ORDINARY_MTIME_MAX;
+      file_timestamp_sprintf (buf, ts);
+      OSS (error, NILF,
+           _("%s: Timestamp out of range; substituting %s"), f, buf);
+    }
+
+  return ts;
+}
+
+/* Return the current time as a file timestamp, setting *RESOLUTION to
+   its resolution.  */
+FILE_TIMESTAMP
+file_timestamp_now (int *resolution)
+{
+  int r;
+  time_t s;
+  int ns;
+
+  /* Don't bother with high-resolution clocks if file timestamps have
+     only one-second resolution.  The code below should work, but it's
+     not worth the hassle of debugging it on hosts where it fails.  */
+#if FILE_TIMESTAMP_HI_RES
+# if HAVE_CLOCK_GETTIME && defined CLOCK_REALTIME
+  {
+    struct timespec timespec;
+    if (clock_gettime (CLOCK_REALTIME, &timespec) == 0)
+      {
+        r = 1;
+        s = timespec.tv_sec;
+        ns = timespec.tv_nsec;
+        goto got_time;
+      }
+  }
+# endif
+# if HAVE_GETTIMEOFDAY
+  {
+    struct timeval timeval;
+    if (gettimeofday (&timeval, 0) == 0)
+      {
+        r = 1000;
+        s = timeval.tv_sec;
+        ns = timeval.tv_usec * 1000;
+        goto got_time;
+      }
+  }
+# endif
+#endif
+
+  r = 1000000000;
+  s = time ((time_t *) 0);
+  ns = 0;
+
+#if FILE_TIMESTAMP_HI_RES
+ got_time:
+#endif
+  *resolution = r;
+  return file_timestamp_cons (0, s, ns);
+}
+
+/* Place into the buffer P a printable representation of the file
+   timestamp TS.  */
+void
+file_timestamp_sprintf (char *p, FILE_TIMESTAMP ts)
+{
+  time_t t = FILE_TIMESTAMP_S (ts);
+  struct tm *tm = localtime (&t);
+
+  if (tm)
+    sprintf (p, "%04d-%02d-%02d %02d:%02d:%02d",
+             tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+             tm->tm_hour, tm->tm_min, tm->tm_sec);
+  else if (t < 0)
+    sprintf (p, "%ld", (long) t);
+  else
+    sprintf (p, "%lu", (unsigned long) t);
+  p += strlen (p);
+
+  /* Append nanoseconds as a fraction, but remove trailing zeros.  We don't
+     know the actual timestamp resolution, since clock_getres applies only to
+     local times, whereas this timestamp might come from a remote filesystem.
+     So removing trailing zeros is the best guess that we can do.  */
+  sprintf (p, ".%09d", FILE_TIMESTAMP_NS (ts));
+  p += strlen (p) - 1;
+  while (*p == '0')
+    p--;
+  p += *p != '.';
+
+  *p = '\0';
+}
+
+/* Print the data base of files.  */
+
+void
+print_prereqs (const struct dep *deps)
+{
+  const struct dep *ood = 0;
+
+  /* Print all normal dependencies; note any order-only deps.  */
+  for (; deps != 0; deps = deps->next)
+    if (! deps->ignore_mtime)
+      printf (" %s", dep_name (deps));
+    else if (! ood)
+      ood = deps;
+
+  /* Print order-only deps, if we have any.  */
+  if (ood)
+    {
+      printf (" | %s", dep_name (ood));
+      for (ood = ood->next; ood != 0; ood = ood->next)
+        if (ood->ignore_mtime)
+          printf (" %s", dep_name (ood));
+    }
+
+  putchar ('\n');
+}
+
+static void
+print_file (const void *item)
+{
+  const struct file *f = item;
+
+  /* If we're not using builtin targets, don't show them.
+
+     Ideally we'd be able to delete them altogether but currently there's no
+     facility to ever delete a file once it's been added.  */
+  if (no_builtin_rules_flag && f->builtin)
+    return;
+
+  putchar ('\n');
+
+  if (f->cmds && f->cmds->recipe_prefix != cmd_prefix)
+    {
+      fputs (".RECIPEPREFIX = ", stdout);
+      cmd_prefix = f->cmds->recipe_prefix;
+      if (cmd_prefix != RECIPEPREFIX_DEFAULT)
+        putchar (cmd_prefix);
+      putchar ('\n');
+    }
+
+  if (f->variables != 0)
+    print_target_variables (f);
+
+  if (!f->is_target)
+    puts (_("# Not a target:"));
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  if (f->multi_head)
+    {
+      const struct file *f2;
+      if (f->multi_head == f)
+        {
+          int multi_maybe = -1;
+          assert (!f->multi_maybe);
+          assert (!f->double_colon);
+
+          printf ("%s", f->name);
+          for (f2 = f->multi_next; f2 != 0; f2 = f2->multi_next)
+            {
+              printf (" %s%s", f2->multi_maybe != multi_maybe
+                      ? f2->multi_maybe ? "+| " : "+ " : "",
+                      f2->name);
+              multi_maybe = f2->multi_maybe;
+            }
+          if (f->deps)
+            printf (": \\\n\t");
+          else
+            putchar (':');
+        }
+      else
+        printf ("%s:%s", f->name, f->double_colon ? ":" : "");
+    }
+  else
+#endif
+    printf ("%s:%s", f->name, f->double_colon ? ":" : "");
+
+  print_prereqs (f->deps);
+
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  if (f->multi_head && f->multi_head != f)
+    {
+      const struct file *f2;
+      fputs (_("#  In multi target list:"), stdout);
+      for (f2 = f->multi_head; f2 != 0; f2 = f2->multi_next)
+        printf (" %s%s", f2->name, f == f2 ? "(*)" : "");
+      putchar ('\n');
+      if (f->multi_maybe)
+        puts (_("#  File is an optional multi target member."));
+    }
+#endif
+
+  if (f->precious)
+    puts (_("#  Precious file (prerequisite of .PRECIOUS)."));
+  if (f->phony)
+    puts (_("#  Phony target (prerequisite of .PHONY)."));
+  if (f->cmd_target)
+    puts (_("#  Command line target."));
+  if (f->dontcare)
+    puts (_("#  A default, MAKEFILES, or -include/sinclude makefile."));
+#if defined (CONFIG_WITH_COMPILER) || defined (CONFIG_WITH_MAKE_STATS)
+  if (f->eval_count > 0)
+    {
+# ifdef CONFIG_WITH_COMPILER
+      if (f->evalprog)
+        printf (_("#  Makefile evaluated %u times - compiled\n"), f->eval_count);
+      else
+# endif
+        printf (_("#  Makefile evaluated %u times\n"), f->eval_count);
+    }
+#endif
+  if (f->builtin)
+    puts (_("#  Builtin rule"));
+  puts (f->tried_implicit
+        ? _("#  Implicit rule search has been done.")
+        : _("#  Implicit rule search has not been done."));
+  if (f->stem != 0)
+    printf (_("#  Implicit/static pattern stem: '%s'\n"), f->stem);
+  if (f->intermediate)
+    puts (_("#  File is an intermediate prerequisite."));
+  if (f->also_make != 0)
+    {
+      const struct dep *d;
+      fputs (_("#  Also makes:"), stdout);
+      for (d = f->also_make; d != 0; d = d->next)
+        printf (" %s", dep_name (d));
+      putchar ('\n');
+    }
+  if (f->last_mtime == UNKNOWN_MTIME)
+    puts (_("#  Modification time never checked."));
+  else if (f->last_mtime == NONEXISTENT_MTIME)
+    puts (_("#  File does not exist."));
+  else if (f->last_mtime == OLD_MTIME)
+    puts (_("#  File is very old."));
+  else
+    {
+      char buf[FILE_TIMESTAMP_PRINT_LEN_BOUND + 1];
+      file_timestamp_sprintf (buf, f->last_mtime);
+      printf (_("#  Last modified %s\n"), buf);
+    }
+  puts (f->updated
+        ? _("#  File has been updated.") : _("#  File has not been updated."));
+  switch (f->command_state)
+    {
+    case cs_running:
+      puts (_("#  Recipe currently running (THIS IS A BUG)."));
+      break;
+    case cs_deps_running:
+      puts (_("#  Dependencies recipe running (THIS IS A BUG)."));
+      break;
+    case cs_not_started:
+    case cs_finished:
+      switch (f->update_status)
+        {
+        case us_none:
+          break;
+        case us_success:
+          puts (_("#  Successfully updated."));
+          break;
+        case us_question:
+          assert (question_flag);
+          puts (_("#  Needs to be updated (-q is set)."));
+          break;
+        case us_failed:
+          puts (_("#  Failed to be updated."));
+          break;
+        }
+      break;
+    default:
+      puts (_("#  Invalid value in 'command_state' member!"));
+      fflush (stdout);
+      fflush (stderr);
+      abort ();
+    }
+
+  if (f->variables != 0)
+    print_file_variables (f);
+
+  if (f->cmds != 0)
+    print_commands (f->cmds);
+
+  if (f->prev)
+    print_file ((const void *) f->prev);
+}
+
+void
+print_file_data_base (void)
+{
+  puts (_("\n# Files"));
+
+  hash_map (&files, print_file);
+
+  fputs (_("\n# files hash-table stats:\n# "), stdout);
+  hash_print_stats (&files, stdout);
+}
+
+#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
+void
+print_file_stats (void)
+{
+  fputs (_("\n# files hash-table stats:\n# "), stdout);
+  hash_print_stats (&files, stdout);
+  fputs ("\n", stdout);
+}
+#endif
+
+/* Verify the integrity of the data base of files.  */
+
+#define VERIFY_CACHED(_p,_n) \
+    do{                                                                       \
+        if (_p->_n && _p->_n[0] && !strcache_iscached (_p->_n))               \
+          error (NULL, strlen (_p->name) + CSTRLEN (# _n) + strlen (_p->_n),  \
+                 _("%s: Field '%s' not cached: %s"), _p->name, # _n, _p->_n); \
+    }while(0)
+
+static void
+verify_file (const void *item)
+{
+  const struct file *f = item;
+  const struct dep *d;
+
+  VERIFY_CACHED (f, name);
+  VERIFY_CACHED (f, hname);
+  VERIFY_CACHED (f, vpath);
+  VERIFY_CACHED (f, stem);
+
+  /* Check the deps.  */
+  for (d = f->deps; d != 0; d = d->next)
+    {
+      if (! d->need_2nd_expansion)
+        VERIFY_CACHED (d, name);
+      VERIFY_CACHED (d, stem);
+    }
+}
+
+void
+verify_file_data_base (void)
+{
+  hash_map (&files, verify_file);
+}
+
+#define EXPANSION_INCREMENT(_l)  ((((_l) / 500) + 1) * 500)
+
+char *
+build_target_list (char *value)
+{
+  static unsigned long last_targ_count = 0;
+
+  if (files.ht_fill != last_targ_count)
+    {
+      unsigned long max = EXPANSION_INCREMENT (strlen (value));
+      unsigned long len;
+      char *p;
+      struct file **fp = (struct file **) files.ht_vec;
+      struct file **end = &fp[files.ht_size];
+
+      /* Make sure we have at least MAX bytes in the allocated buffer.  */
+      value = xrealloc (value, max);
+
+      p = value;
+      len = 0;
+      for (; fp < end; ++fp)
+        if (!HASH_VACANT (*fp) && (*fp)->is_target)
+          {
+            struct file *f = *fp;
+            int l = strlen (f->name);
+
+            len += l + 1;
+            if (len > max)
+              {
+                unsigned long off = p - value;
+
+                max += EXPANSION_INCREMENT (l + 1);
+                value = xrealloc (value, max);
+                p = &value[off];
+              }
+
+            memcpy (p, f->name, l);
+            p += l;
+            *(p++) = ' ';
+          }
+      *(p-1) = '\0';
+
+      last_targ_count = files.ht_fill;
+    }
+
+  return value;
+}
+
+void
+init_hash_files (void)
+{
+#ifndef CONFIG_WITH_STRCACHE2
+# ifdef KMK
+  hash_init (&files, /*65535*/ 32755, file_hash_1, file_hash_2, file_hash_cmp);
+# else
+  hash_init (&files, 1000, file_hash_1, file_hash_2, file_hash_cmp);
+# endif
+#else  /* CONFIG_WITH_STRCACHE2 */
+# ifdef KMK
+  hash_init_strcached (&files, 32755, &file_strcache,
+                       offsetof (struct file, hname));
+# else
+  hash_init_strcached (&files, 1000, &file_strcache,
+                       offsetof (struct file, hname));
+# endif
+#endif /* CONFIG_WITH_STRCACHE2 */
+}
+
+/* EOF */
diff --git a/src/kmk/filedef.h b/src/kmk/filedef.h
new file mode 100644
index 0000000..cf606ce
--- /dev/null
+++ b/src/kmk/filedef.h
@@ -0,0 +1,254 @@
+/* Definition of target file data structures for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Structure that represents the info on one file
+   that the makefile says how to make.
+   All of these are chained together through 'next'.  */
+
+#include "hash.h"
+
+struct file
+  {
+    const char *name;
+    const char *hname;          /* Hashed filename */
+    const char *vpath;          /* VPATH/vpath pathname */
+    struct dep *deps;		/* all dependencies, including duplicates */
+#ifdef CONFIG_WITH_LAZY_DEPS_VARS
+    struct dep *deps_no_dupes;	/* dependencies without duplicates, created on
+                                   demaned by func_deps. */
+#endif
+    struct commands *cmds;      /* Commands to execute for this target.  */
+    const char *stem;           /* Implicit stem, if an implicit
+                                   rule has been used */
+    struct dep *also_make;      /* Targets that are made by making this.  */
+    struct file *prev;          /* Previous entry for same file name;
+                                   used when there are multiple double-colon
+                                   entries for the same file.  */
+    struct file *last;          /* Last entry for the same file name.  */
+
+    /* File that this file was renamed to.  After any time that a
+       file could be renamed, call 'check_renamed' (below).  */
+    struct file *renamed;
+
+    /* List of variable sets used for this file.  */
+    struct variable_set_list *variables;
+
+    /* Pattern-specific variable reference for this target, or null if there
+       isn't one.  Also see the pat_searched flag, below.  */
+    struct variable_set_list *pat_variables;
+
+    /* Immediate dependent that caused this target to be remade,
+       or nil if there isn't one.  */
+    struct file *parent;
+
+    /* For a double-colon entry, this is the first double-colon entry for
+       the same file.  Otherwise this is null.  */
+    struct file *double_colon;
+
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+    /* For a target of an explicit multi target rule, this points to the
+       primary target.  Otherwise this is null. */
+    struct file *multi_head;
+    /* Pointer to next target of an explicit multi target rule. */
+    struct file *multi_next;
+#endif
+
+#ifdef CONFIG_WITH_COMPILER
+    struct kmk_cc_evalprog *evalprog; /* Pointer to evalval/evalctx "program". */
+#endif
+
+    FILE_TIMESTAMP last_mtime;  /* File's modtime, if already known.  */
+    FILE_TIMESTAMP mtime_before_update; /* File's modtime before any updating
+                                           has been performed.  */
+    unsigned int considered;    /* equal to 'considered' if file has been
+                                   considered on current scan of goal chain */
+    int command_flags;          /* Flags OR'd in for cmds; see commands.h.  */
+    enum update_status          /* Status of the last attempt to update.  */
+      {
+        us_success = 0,         /* Successfully updated.  Must be 0!  */
+        us_none,                /* No attempt to update has been made.  */
+        us_question,            /* Needs to be updated (-q is is set).  */
+        us_failed               /* Update failed.  */
+      } update_status ENUM_BITFIELD (2);
+    enum cmd_state              /* State of the commands.  */
+      {
+        cs_not_started = 0,     /* Not yet started.  Must be 0!  */
+        cs_deps_running,        /* Dep commands running.  */
+        cs_running,             /* Commands running.  */
+        cs_finished             /* Commands finished.  */
+      } command_state ENUM_BITFIELD (2);
+
+    unsigned int builtin:1;     /* True if the file is a builtin rule. */
+    unsigned int precious:1;    /* Non-0 means don't delete file on quit */
+    unsigned int loaded:1;      /* True if the file is a loaded object. */
+    unsigned int low_resolution_time:1; /* Nonzero if this file's time stamp
+                                           has only one-second resolution.  */
+    unsigned int tried_implicit:1; /* Nonzero if have searched
+                                      for implicit rule for making
+                                      this file; don't search again.  */
+    unsigned int updating:1;    /* Nonzero while updating deps of this file */
+    unsigned int updated:1;     /* Nonzero if this file has been remade.  */
+    unsigned int is_target:1;   /* Nonzero if file is described as target.  */
+    unsigned int cmd_target:1;  /* Nonzero if file was given on cmd line.  */
+    unsigned int phony:1;       /* Nonzero if this is a phony file
+                                   i.e., a prerequisite of .PHONY.  */
+    unsigned int intermediate:1;/* Nonzero if this is an intermediate file.  */
+    unsigned int secondary:1;   /* Nonzero means remove_intermediates should
+                                   not delete it.  */
+    unsigned int dontcare:1;    /* Nonzero if no complaint is to be made if
+                                   this target cannot be remade.  */
+    unsigned int ignore_vpath:1;/* Nonzero if we threw out VPATH name.  */
+    unsigned int pat_searched:1;/* Nonzero if we already searched for
+                                   pattern-specific variables.  */
+    unsigned int no_diag:1;     /* True if the file failed to update and no
+                                   diagnostics has been issued (dontcare). */
+
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+    unsigned int multi_maybe:1; /* Nonzero if this file isn't always updated
+                                   by the explicit multi target rule. */
+#endif
+#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
+    unsigned int need_2nd_target_expansion:1; /* Nonzero if this file needs
+                                  second expansion of its name. Whether it
+                                  can receive this is decided at parse time,
+                                  and the expanding done in snap_deps. */
+#endif
+#if defined (CONFIG_WITH_COMPILER) || defined (CONFIG_WITH_MAKE_STATS)
+    unsigned int eval_count:14; /* Times evaluated as a makefile. */
+#endif
+  };
+
+
+extern struct file *default_file;
+
+
+struct file *lookup_file (const char *name);
+#ifdef CONFIG_WITH_STRCACHE2
+struct file *lookup_file_cached (const char *name);
+#endif
+struct file *enter_file (const char *name);
+struct dep *split_prereqs (char *prereqstr);
+struct dep *enter_prereqs (struct dep *prereqs, const char *stem);
+void remove_intermediates (int sig);
+void snap_deps (void);
+void rename_file (struct file *file, const char *name);
+void rehash_file (struct file *file, const char *name);
+void set_command_state (struct file *file, enum cmd_state state);
+void notice_finished_file (struct file *file);
+void init_hash_files (void);
+void verify_file_data_base (void);
+char *build_target_list (char *old_list);
+void print_prereqs (const struct dep *deps);
+void print_file_data_base (void);
+int try_implicit_rule (struct file *file, unsigned int depth);
+int stemlen_compare (const void *v1, const void *v2);
+
+#if FILE_TIMESTAMP_HI_RES
+# define FILE_TIMESTAMP_STAT_MODTIME(fname, st) \
+    file_timestamp_cons (fname, (st).st_mtime, (st).ST_MTIM_NSEC)
+#else
+# define FILE_TIMESTAMP_STAT_MODTIME(fname, st) \
+    file_timestamp_cons (fname, (st).st_mtime, 0)
+#endif
+
+/* If FILE_TIMESTAMP is 64 bits (or more), use nanosecond resolution.
+   (Multiply by 2**30 instead of by 10**9 to save time at the cost of
+   slightly decreasing the number of available timestamps.)  With
+   64-bit FILE_TIMESTAMP, this stops working on 2514-05-30 01:53:04
+   UTC, but by then uintmax_t should be larger than 64 bits.  */
+#define FILE_TIMESTAMPS_PER_S (FILE_TIMESTAMP_HI_RES ? 1000000000 : 1)
+#define FILE_TIMESTAMP_LO_BITS (FILE_TIMESTAMP_HI_RES ? 30 : 0)
+
+#define FILE_TIMESTAMP_S(ts) (((ts) - ORDINARY_MTIME_MIN) \
+                              >> FILE_TIMESTAMP_LO_BITS)
+#define FILE_TIMESTAMP_NS(ts) ((int) (((ts) - ORDINARY_MTIME_MIN) \
+                                      & ((1 << FILE_TIMESTAMP_LO_BITS) - 1)))
+
+/* Upper bound on length of string "YYYY-MM-DD HH:MM:SS.NNNNNNNNN"
+   representing a file timestamp.  The upper bound is not necessarily 29,
+   since the year might be less than -999 or greater than 9999.
+
+   Subtract one for the sign bit if in case file timestamps can be negative;
+   subtract FLOOR_LOG2_SECONDS_PER_YEAR to yield an upper bound on how many
+   file timestamp bits might affect the year;
+   302 / 1000 is log10 (2) rounded up;
+   add one for integer division truncation;
+   add one more for a minus sign if file timestamps can be negative;
+   add 4 to allow for any 4-digit epoch year (e.g. 1970);
+   add 25 to allow for "-MM-DD HH:MM:SS.NNNNNNNNN".  */
+#define FLOOR_LOG2_SECONDS_PER_YEAR 24
+#define FILE_TIMESTAMP_PRINT_LEN_BOUND \
+  (((sizeof (FILE_TIMESTAMP) * CHAR_BIT - 1 - FLOOR_LOG2_SECONDS_PER_YEAR) \
+    * 302 / 1000) \
+   + 1 + 1 + 4 + 25)
+
+FILE_TIMESTAMP file_timestamp_cons (char const *, time_t, long int);
+FILE_TIMESTAMP file_timestamp_now (int *);
+void file_timestamp_sprintf (char *p, FILE_TIMESTAMP ts);
+
+/* Return the mtime of file F (a struct file *), caching it.
+   The value is NONEXISTENT_MTIME if the file does not exist.  */
+#define file_mtime(f) file_mtime_1 ((f), 1)
+/* Return the mtime of file F (a struct file *), caching it.
+   Don't search using vpath for the file--if it doesn't actually exist,
+   we don't find it.
+   The value is NONEXISTENT_MTIME if the file does not exist.  */
+#define file_mtime_no_search(f) file_mtime_1 ((f), 0)
+FILE_TIMESTAMP f_mtime (struct file *file, int search);
+#define file_mtime_1(f, v) \
+  ((f)->last_mtime == UNKNOWN_MTIME ? f_mtime ((f), v) : (f)->last_mtime)
+
+/* Special timestamp values.  */
+
+/* The file's timestamp is not yet known.  */
+#define UNKNOWN_MTIME 0
+
+/* The file does not exist.  */
+#define NONEXISTENT_MTIME 1
+
+/* The file does not exist, and we assume that it is older than any
+   actual file.  */
+#define OLD_MTIME 2
+
+/* The smallest and largest ordinary timestamps.  */
+#define ORDINARY_MTIME_MIN (OLD_MTIME + 1)
+#if FILE_TIMESTAMP_HI_RES == 0 /* bird: shut up annoying warnings!
+  ASSUMES: unsigned FILE_TIMESTAMP ++. */
+# define ORDINARY_MTIME_MAX     ( ~ (FILE_TIMESTAMP) 0 )
+#else
+#define ORDINARY_MTIME_MAX ((FILE_TIMESTAMP_S (NEW_MTIME) \
+                             << FILE_TIMESTAMP_LO_BITS) \
+                            + ORDINARY_MTIME_MIN + FILE_TIMESTAMPS_PER_S - 1)
+#endif
+
+/* Modtime value to use for 'infinitely new'.  We used to get the current time
+   from the system and use that whenever we wanted 'new'.  But that causes
+   trouble when the machine running make and the machine holding a file have
+   different ideas about what time it is; and can also lose for 'force'
+   targets, which need to be considered newer than anything that depends on
+   them, even if said dependents' modtimes are in the future.  */
+#if 1 /* bird: ASSUME the type is unsigned and the wrath of a pedantic gcc.  */
+# define NEW_MTIME              ( ~ (FILE_TIMESTAMP) 0 )
+#else
+#define NEW_MTIME INTEGER_TYPE_MAXIMUM (FILE_TIMESTAMP)
+#endif
+
+#define check_renamed(file) \
+  while ((file)->renamed != 0) (file) = (file)->renamed /* No ; here.  */
+
+/* Have we snapped deps yet?  */
+extern int snapped_deps;
diff --git a/src/kmk/function.c b/src/kmk/function.c
new file mode 100644
index 0000000..5ad8586
--- /dev/null
+++ b/src/kmk/function.c
@@ -0,0 +1,8250 @@
+/* Builtin function expansion for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "variable.h"
+#include "dep.h"
+#include "job.h"
+#include "commands.h"
+#include "debug.h"
+
+#ifdef _AMIGA
+#include "amiga.h"
+#endif
+
+#ifdef WINDOWS32 /* bird */
+# include "pathstuff.h"
+# ifdef CONFIG_NEW_WIN_CHILDREN
+#  include "w32/winchildren.h"
+# endif
+#endif
+
+#ifdef KMK_HELPERS
+# include "kbuild.h"
+#endif
+#ifdef CONFIG_WITH_PRINTF
+# include "kmkbuiltin.h"
+#endif
+#ifdef CONFIG_WITH_XARGS /* bird */
+# ifdef HAVE_LIMITS_H
+#  include <limits.h>
+# endif
+#endif
+#ifdef CONFIG_WITH_COMPILER
+# include "kmk_cc_exec.h"
+#endif
+#include <assert.h> /* bird */
+
+#if defined (CONFIG_WITH_MATH) || defined (CONFIG_WITH_NANOTS) || defined (CONFIG_WITH_FILE_SIZE) /* bird */
+# include <ctype.h>
+typedef big_int math_int;
+static char *math_int_to_variable_buffer (char *, math_int);
+static math_int math_int_from_string (const char *str);
+#endif
+
+#ifdef CONFIG_WITH_NANOTS /* bird */
+# ifdef WINDOWS32
+#  include <Windows.h>
+# endif
+#endif
+
+#ifdef __OS2__
+# define CONFIG_WITH_OS2_LIBPATH 1
+#endif
+#ifdef CONFIG_WITH_OS2_LIBPATH
+# define INCL_BASE
+# define INCL_ERRROS
+# include <os2.h>
+
+# define QHINF_EXEINFO       1 /* NE exeinfo. */
+# define QHINF_READRSRCTBL   2 /* Reads from the resource table. */
+# define QHINF_READFILE      3 /* Reads from the executable file. */
+# define QHINF_LIBPATHLENGTH 4 /* Gets the libpath length. */
+# define QHINF_LIBPATH       5 /* Gets the entire libpath. */
+# define QHINF_FIXENTRY      6 /* NE only */
+# define QHINF_STE           7 /* NE only */
+# define QHINF_MAPSEL        8 /* NE only */
+  extern APIRET APIENTRY DosQueryHeaderInfo(HMODULE hmod, ULONG ulIndex, PVOID pvBuffer, ULONG cbBuffer, ULONG ulSubFunction);
+#endif /* CONFIG_WITH_OS2_LIBPATH */
+
+#if defined(KMK) || defined(CONFIG_WITH_LAZY_DEPS_VARS)
+/** Checks if the @a_cch characters (bytes) in @a a_psz equals @a a_szConst. */
+# define STR_N_EQUALS(a_psz, a_cch, a_szConst) \
+    ( (a_cch) == sizeof (a_szConst) - 1 && !strncmp ((a_psz), (a_szConst), sizeof (a_szConst) - 1) )
+#endif
+
+#ifdef KMK
+# ifdef _MSC_VER
+#  include "kmkbuiltin/mscfakes.h"
+# endif
+# include "version_compare.h"
+#endif
+
+
+struct function_table_entry
+  {
+    union {
+      char *(*func_ptr) (char *output, char **argv, const char *fname);
+      gmk_func_ptr alloc_func_ptr;
+    } fptr;
+    const char *name;
+    unsigned char len;
+    unsigned char minimum_args;
+    unsigned char maximum_args;
+    unsigned char expand_args:1;
+    unsigned char alloc_fn:1;
+  };
+
+static unsigned long
+function_table_entry_hash_1 (const void *keyv)
+{
+  const struct function_table_entry *key = keyv;
+  return_STRING_N_HASH_1 (key->name, key->len);
+}
+
+static unsigned long
+function_table_entry_hash_2 (const void *keyv)
+{
+  const struct function_table_entry *key = keyv;
+  return_STRING_N_HASH_2 (key->name, key->len);
+}
+
+static int
+function_table_entry_hash_cmp (const void *xv, const void *yv)
+{
+  const struct function_table_entry *x = xv;
+  const struct function_table_entry *y = yv;
+  int result = x->len - y->len;
+  if (result)
+    return result;
+  return_STRING_N_COMPARE (x->name, y->name, x->len);
+}
+
+static struct hash_table function_table;
+
+#ifdef CONFIG_WITH_MAKE_STATS
+long          make_stats_allocations = 0;
+long          make_stats_reallocations = 0;
+unsigned long make_stats_allocated = 0;
+unsigned long make_stats_ht_lookups = 0;
+unsigned long make_stats_ht_collisions = 0;
+#endif
+
+
+/* Store into VARIABLE_BUFFER at O the result of scanning TEXT and replacing
+   each occurrence of SUBST with REPLACE. TEXT is null-terminated.  SLEN is
+   the length of SUBST and RLEN is the length of REPLACE.  If BY_WORD is
+   nonzero, substitutions are done only on matches which are complete
+   whitespace-delimited words.  */
+
+char *
+subst_expand (char *o, const char *text, const char *subst, const char *replace,
+              unsigned int slen, unsigned int rlen, int by_word)
+{
+  const char *t = text;
+  const char *p;
+
+  if (slen == 0 && !by_word)
+    {
+      /* The first occurrence of "" in any string is its end.  */
+      o = variable_buffer_output (o, t, strlen (t));
+      if (rlen > 0)
+        o = variable_buffer_output (o, replace, rlen);
+      return o;
+    }
+
+  do
+    {
+      if (by_word && slen == 0)
+        /* When matching by words, the empty string should match
+           the end of each word, rather than the end of the whole text.  */
+        p = end_of_token (next_token (t));
+      else
+        {
+          p = strstr (t, subst);
+          if (p == 0)
+            {
+              /* No more matches.  Output everything left on the end.  */
+              o = variable_buffer_output (o, t, strlen (t));
+              return o;
+            }
+        }
+
+      /* Output everything before this occurrence of the string to replace.  */
+      if (p > t)
+        o = variable_buffer_output (o, t, p - t);
+
+      /* If we're substituting only by fully matched words,
+         or only at the ends of words, check that this case qualifies.  */
+      if (by_word
+          && ((p > text && !ISSPACE (p[-1]))
+              || ! STOP_SET (p[slen], MAP_SPACE|MAP_NUL)))
+        /* Struck out.  Output the rest of the string that is
+           no longer to be replaced.  */
+        o = variable_buffer_output (o, subst, slen);
+      else if (rlen > 0)
+        /* Output the replacement string.  */
+        o = variable_buffer_output (o, replace, rlen);
+
+      /* Advance T past the string to be replaced.  */
+      t = p + slen;
+    } while (*t != '\0');
+
+  return o;
+}
+
+
+/* Store into VARIABLE_BUFFER at O the result of scanning TEXT
+   and replacing strings matching PATTERN with REPLACE.
+   If PATTERN_PERCENT is not nil, PATTERN has already been
+   run through find_percent, and PATTERN_PERCENT is the result.
+   If REPLACE_PERCENT is not nil, REPLACE has already been
+   run through find_percent, and REPLACE_PERCENT is the result.
+   Note that we expect PATTERN_PERCENT and REPLACE_PERCENT to point to the
+   character _AFTER_ the %, not to the % itself.
+*/
+
+char *
+patsubst_expand_pat (char *o, const char *text,
+                     const char *pattern, const char *replace,
+                     const char *pattern_percent, const char *replace_percent)
+{
+  unsigned int pattern_prepercent_len, pattern_postpercent_len;
+  unsigned int replace_prepercent_len, replace_postpercent_len;
+  const char *t;
+  unsigned int len;
+  int doneany = 0;
+
+  /* Record the length of REPLACE before and after the % so we don't have to
+     compute these lengths more than once.  */
+  if (replace_percent)
+    {
+      replace_prepercent_len = replace_percent - replace - 1;
+      replace_postpercent_len = strlen (replace_percent);
+    }
+  else
+    {
+      replace_prepercent_len = strlen (replace);
+      replace_postpercent_len = 0;
+    }
+
+  if (!pattern_percent)
+    /* With no % in the pattern, this is just a simple substitution.  */
+    return subst_expand (o, text, pattern, replace,
+                         strlen (pattern), strlen (replace), 1);
+
+  /* Record the length of PATTERN before and after the %
+     so we don't have to compute it more than once.  */
+  pattern_prepercent_len = pattern_percent - pattern - 1;
+  pattern_postpercent_len = strlen (pattern_percent);
+
+  while ((t = find_next_token (&text, &len)) != 0)
+    {
+      int fail = 0;
+
+      /* Is it big enough to match?  */
+      if (len < pattern_prepercent_len + pattern_postpercent_len)
+        fail = 1;
+
+      /* Does the prefix match? */
+      if (!fail && pattern_prepercent_len > 0
+          && (*t != *pattern
+              || t[pattern_prepercent_len - 1] != pattern_percent[-2]
+              || !strneq (t + 1, pattern + 1, pattern_prepercent_len - 1)))
+        fail = 1;
+
+      /* Does the suffix match? */
+      if (!fail && pattern_postpercent_len > 0
+          && (t[len - 1] != pattern_percent[pattern_postpercent_len - 1]
+              || t[len - pattern_postpercent_len] != *pattern_percent
+              || !strneq (&t[len - pattern_postpercent_len],
+                          pattern_percent, pattern_postpercent_len - 1)))
+        fail = 1;
+
+      if (fail)
+        /* It didn't match.  Output the string.  */
+        o = variable_buffer_output (o, t, len);
+      else
+        {
+          /* It matched.  Output the replacement.  */
+
+          /* Output the part of the replacement before the %.  */
+          o = variable_buffer_output (o, replace, replace_prepercent_len);
+
+          if (replace_percent != 0)
+            {
+              /* Output the part of the matched string that
+                 matched the % in the pattern.  */
+              o = variable_buffer_output (o, t + pattern_prepercent_len,
+                                          len - (pattern_prepercent_len
+                                                 + pattern_postpercent_len));
+              /* Output the part of the replacement after the %.  */
+              o = variable_buffer_output (o, replace_percent,
+                                          replace_postpercent_len);
+            }
+        }
+
+      /* Output a space, but not if the replacement is "".  */
+      if (fail || replace_prepercent_len > 0
+          || (replace_percent != 0 && len + replace_postpercent_len > 0))
+        {
+          o = variable_buffer_output (o, " ", 1);
+          doneany = 1;
+        }
+    }
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  if (doneany)
+    /* Kill the last space.  */
+    --o;
+#else
+  /* Kill the last space and make sure there is a terminator there
+     so that strcache_add_len doesn't have to do a lot of exacty work
+     when expand_deps sends the output its way. */
+  if (doneany)
+    *--o = '\0';
+  else
+    o = variable_buffer_output (o, "\0", 1) - 1;
+#endif
+
+  return o;
+}
+
+/* Store into VARIABLE_BUFFER at O the result of scanning TEXT
+   and replacing strings matching PATTERN with REPLACE.
+   If PATTERN_PERCENT is not nil, PATTERN has already been
+   run through find_percent, and PATTERN_PERCENT is the result.
+   If REPLACE_PERCENT is not nil, REPLACE has already been
+   run through find_percent, and REPLACE_PERCENT is the result.
+   Note that we expect PATTERN_PERCENT and REPLACE_PERCENT to point to the
+   character _AFTER_ the %, not to the % itself.
+*/
+
+char *
+patsubst_expand (char *o, const char *text, char *pattern, char *replace)
+{
+  const char *pattern_percent = find_percent (pattern);
+  const char *replace_percent = find_percent (replace);
+
+  /* If there's a percent in the pattern or replacement skip it.  */
+  if (replace_percent)
+    ++replace_percent;
+  if (pattern_percent)
+    ++pattern_percent;
+
+  return patsubst_expand_pat (o, text, pattern, replace,
+                              pattern_percent, replace_percent);
+}
+
+#if defined (CONFIG_WITH_OPTIMIZATION_HACKS) || defined (CONFIG_WITH_VALUE_LENGTH)
+
+/* Char map containing the valid function name characters. */
+char func_char_map[256];
+
+/* Do the hash table lookup. */
+
+MY_INLINE const struct function_table_entry *
+lookup_function_in_hash_tab (const char *s, unsigned char len)
+{
+    struct function_table_entry function_table_entry_key;
+    function_table_entry_key.name = s;
+    function_table_entry_key.len = len;
+
+    return hash_find_item (&function_table, &function_table_entry_key);
+}
+
+/* Look up a function by name.  */
+
+MY_INLINE const struct function_table_entry *
+lookup_function (const char *s, unsigned int len)
+{
+  unsigned char ch;
+# if 0 /* insane loop unroll */
+
+  if (len > MAX_FUNCTION_LENGTH)
+      len = MAX_FUNCTION_LENGTH + 1;
+
+#  define X(idx) \
+        if (!func_char_map[ch = s[idx]]) \
+          { \
+            if (ISBLANK (ch)) \
+              return lookup_function_in_hash_tab (s, idx); \
+            return 0; \
+          }
+#  define Z(idx) \
+        return lookup_function_in_hash_tab (s, idx);
+
+  switch (len)
+    {
+      default:
+        assert (0);
+      case  0: return 0;
+      case  1: return 0;
+      case  2: X(0); X(1); Z(2);
+      case  3: X(0); X(1); X(2); Z(3);
+      case  4: X(0); X(1); X(2); X(3); Z(4);
+      case  5: X(0); X(1); X(2); X(3); X(4); Z(5);
+      case  6: X(0); X(1); X(2); X(3); X(4); X(5); Z(6);
+      case  7: X(0); X(1); X(2); X(3); X(4); X(5); X(6); Z(7);
+      case  8: X(0); X(1); X(2); X(3); X(4); X(5); X(6); X(7); Z(8);
+      case  9: X(0); X(1); X(2); X(3); X(4); X(5); X(6); X(7); X(8); Z(9);
+      case 10: X(0); X(1); X(2); X(3); X(4); X(5); X(6); X(7); X(8); X(9); Z(10);
+      case 11: X(0); X(1); X(2); X(3); X(4); X(5); X(6); X(7); X(8); X(9); X(10); Z(11);
+      case 12: X(0); X(1); X(2); X(3); X(4); X(5); X(6); X(7); X(8); X(9); X(10); X(11); Z(12);
+      case 13: X(0); X(1); X(2); X(3); X(4); X(5); X(6); X(7); X(8); X(9); X(10); X(11); X(12);
+        if ((ch = s[12]) == '\0' || ISBLANK (ch))
+          return lookup_function_in_hash_tab (s, 12);
+        return 0;
+    }
+#  undef Z
+#  undef X
+
+# else   /* normal loop */
+  const char *e = s;
+  if (len > MAX_FUNCTION_LENGTH)
+      len = MAX_FUNCTION_LENGTH;
+  while (func_char_map[ch = *e])
+    {
+      if (!len--)
+        return 0;
+      e++;
+    }
+  if (ch == '\0' || ISBLANK (ch))
+    return lookup_function_in_hash_tab (s, e - s);
+  return 0;
+# endif /* normal loop */
+}
+
+#else  /* original code */
+/* Look up a function by name.  */
+
+static const struct function_table_entry *
+lookup_function (const char *s)
+{
+  struct function_table_entry function_table_entry_key;
+  const char *e = s;
+  while (STOP_SET (*e, MAP_USERFUNC))
+    e++;
+
+  if (e == s || !STOP_SET(*e, MAP_NUL|MAP_SPACE))
+    return NULL;
+
+  function_table_entry_key.name = s;
+  function_table_entry_key.len = e - s;
+
+  return hash_find_item (&function_table, &function_table_entry_key);
+}
+#endif /* original code */
+
+
+/* Return 1 if PATTERN matches STR, 0 if not.  */
+
+int
+pattern_matches (const char *pattern, const char *percent, const char *str)
+{
+  unsigned int sfxlen, strlength;
+
+  if (percent == 0)
+    {
+      unsigned int len = strlen (pattern) + 1;
+      char *new_chars = alloca (len);
+      memcpy (new_chars, pattern, len);
+      percent = find_percent (new_chars);
+      if (percent == 0)
+        return streq (new_chars, str);
+      pattern = new_chars;
+    }
+
+  sfxlen = strlen (percent + 1);
+  strlength = strlen (str);
+
+  if (strlength < (percent - pattern) + sfxlen
+      || !strneq (pattern, str, percent - pattern))
+    return 0;
+
+  return !strcmp (percent + 1, str + (strlength - sfxlen));
+}
+
+#ifdef KMK
+/* Return 1 if PATTERN matches STR, 0 if not.
+
+   PATTERN is the pattern to match against.  PERCENT points to the '%' wildcard
+   inside PATTERN. SFXLEN is the length of pattern following PERCENT. */
+
+static int
+pattern_matches_ex (const char *pattern, const char *percent,
+                    unsigned int sfxlen,
+                    const char *str, unsigned int strlength)
+{
+  if (strlength < (percent - pattern) + sfxlen
+      || !strneq (pattern, str, percent - pattern)
+      || strcmp (percent + 1, str + (strlength - sfxlen)))
+    return 0;
+  return 1;
+}
+#endif
+
+
+/* Find the next comma or ENDPAREN (counting nested STARTPAREN and
+   ENDPARENtheses), starting at PTR before END.  Return a pointer to
+   next character.
+
+   If no next argument is found, return NULL.
+*/
+
+static char *
+find_next_argument (char startparen, char endparen,
+                    const char *ptr, const char *end)
+{
+  int count = 0;
+
+  for (; ptr < end; ++ptr)
+    if (*ptr == startparen)
+      ++count;
+
+    else if (*ptr == endparen)
+      {
+        --count;
+        if (count < 0)
+          return NULL;
+      }
+
+    else if (*ptr == ',' && !count)
+      return (char *)ptr;
+
+  /* We didn't find anything.  */
+  return NULL;
+}
+
+
+/* Glob-expand LINE.  The returned pointer is
+   only good until the next call to string_glob.  */
+
+static char *
+string_glob (char *line)
+{
+  static char *result = 0;
+  static unsigned int length;
+  struct nameseq *chain;
+  unsigned int idx;
+
+  chain = PARSE_FILE_SEQ (&line, struct nameseq, MAP_NUL, NULL,
+                          /* We do not want parse_file_seq to strip './'s.
+                             That would break examples like:
+                             $(patsubst ./%.c,obj/%.o,$(wildcard ./?*.c)).  */
+                          PARSEFS_NOSTRIP|PARSEFS_NOCACHE|PARSEFS_EXISTS);
+
+  if (result == 0)
+    {
+      length = 100;
+      result = xmalloc (100);
+    }
+
+  idx = 0;
+  while (chain != 0)
+    {
+      struct nameseq *next = chain->next;
+      unsigned int len = strlen (chain->name);
+
+      if (idx + len + 1 > length)
+        {
+          length += (len + 1) * 2;
+          result = xrealloc (result, length);
+        }
+      memcpy (&result[idx], chain->name, len);
+      idx += len;
+      result[idx++] = ' ';
+
+      /* Because we used PARSEFS_NOCACHE above, we have to free() NAME.  */
+      free ((char *)chain->name);
+#ifndef CONFIG_WITH_ALLOC_CACHES
+      free (chain);
+#else
+      alloccache_free (&nameseq_cache, chain);
+#endif
+      chain = next;
+    }
+
+  /* Kill the last space and terminate the string.  */
+  if (idx == 0)
+    result[0] = '\0';
+  else
+    result[idx - 1] = '\0';
+
+  return result;
+}
+
+/*
+  Builtin functions
+ */
+
+static char *
+func_patsubst (char *o, char **argv, const char *funcname UNUSED)
+{
+  o = patsubst_expand (o, argv[2], argv[0], argv[1]);
+  return o;
+}
+
+
+static char *
+func_join (char *o, char **argv, const char *funcname UNUSED)
+{
+  int doneany = 0;
+
+  /* Write each word of the first argument directly followed
+     by the corresponding word of the second argument.
+     If the two arguments have a different number of words,
+     the excess words are just output separated by blanks.  */
+  const char *tp;
+  const char *pp;
+  const char *list1_iterator = argv[0];
+  const char *list2_iterator = argv[1];
+  do
+    {
+      unsigned int len1, len2;
+
+      tp = find_next_token (&list1_iterator, &len1);
+      if (tp != 0)
+        o = variable_buffer_output (o, tp, len1);
+
+      pp = find_next_token (&list2_iterator, &len2);
+      if (pp != 0)
+        o = variable_buffer_output (o, pp, len2);
+
+      if (tp != 0 || pp != 0)
+        {
+          o = variable_buffer_output (o, " ", 1);
+          doneany = 1;
+        }
+    }
+  while (tp != 0 || pp != 0);
+  if (doneany)
+    /* Kill the last blank.  */
+    --o;
+
+  return o;
+}
+
+
+static char *
+func_origin (char *o, char **argv, const char *funcname UNUSED)
+{
+  /* Expand the argument.  */
+  struct variable *v = lookup_variable (argv[0], strlen (argv[0]));
+  if (v == 0)
+    o = variable_buffer_output (o, "undefined", 9);
+  else
+    switch (v->origin)
+      {
+      default:
+      case o_invalid:
+        abort ();
+        break;
+      case o_default:
+        o = variable_buffer_output (o, "default", 7);
+        break;
+      case o_env:
+        o = variable_buffer_output (o, "environment", 11);
+        break;
+      case o_file:
+        o = variable_buffer_output (o, "file", 4);
+        break;
+      case o_env_override:
+        o = variable_buffer_output (o, "environment override", 20);
+        break;
+      case o_command:
+        o = variable_buffer_output (o, "command line", 12);
+        break;
+      case o_override:
+        o = variable_buffer_output (o, "override", 8);
+        break;
+      case o_automatic:
+        o = variable_buffer_output (o, "automatic", 9);
+        break;
+#ifdef CONFIG_WITH_LOCAL_VARIABLES
+      case o_local:
+        o = variable_buffer_output (o, "local", 5);
+        break;
+#endif
+      }
+
+  return o;
+}
+
+static char *
+func_flavor (char *o, char **argv, const char *funcname UNUSED)
+{
+  struct variable *v = lookup_variable (argv[0], strlen (argv[0]));
+
+  if (v == 0)
+    o = variable_buffer_output (o, "undefined", 9);
+  else
+    if (v->recursive)
+      o = variable_buffer_output (o, "recursive", 9);
+    else
+      o = variable_buffer_output (o, "simple", 6);
+
+  return o;
+}
+
+#ifdef CONFIG_WITH_WHERE_FUNCTION
+static char *
+func_where (char *o, char **argv, const char *funcname UNUSED)
+{
+  struct variable *v = lookup_variable (argv[0], strlen (argv[0]));
+  char buf[64];
+
+  if (v == 0)
+    o = variable_buffer_output (o, "undefined", 9);
+  else
+    if (v->fileinfo.filenm)
+      {
+        o = variable_buffer_output (o, v->fileinfo.filenm, strlen(v->fileinfo.filenm));
+        sprintf (buf, ":%lu", v->fileinfo.lineno);
+        o = variable_buffer_output (o, buf, strlen(buf));
+      }
+    else
+      o = variable_buffer_output (o, "no-location", 11);
+
+  return o;
+}
+#endif /* CONFIG_WITH_WHERE_FUNCTION */
+
+static char *
+func_notdir_suffix (char *o, char **argv, const char *funcname)
+{
+  /* Expand the argument.  */
+  const char *list_iterator = argv[0];
+  const char *p2;
+  int doneany =0;
+  unsigned int len=0;
+
+  int is_suffix = funcname[0] == 's';
+  int is_notdir = !is_suffix;
+  int stop = MAP_DIRSEP | (is_suffix ? MAP_DOT : 0);
+#ifdef VMS
+  /* For VMS list_iterator points to a comma separated list. To use the common
+     [find_]next_token, create a local copy and replace the commas with
+     spaces. Obviously, there is a problem if there is a ',' in the VMS filename
+     (can only happen on ODS5), the same problem as with spaces in filenames,
+     which seems to be present in make on all platforms. */
+  char *vms_list_iterator = alloca(strlen(list_iterator) + 1);
+  int i;
+  for (i = 0; list_iterator[i]; i++)
+    if (list_iterator[i] == ',')
+      vms_list_iterator[i] = ' ';
+    else
+      vms_list_iterator[i] = list_iterator[i];
+  vms_list_iterator[i] = list_iterator[i];
+  while ((p2 = find_next_token((const char**) &vms_list_iterator, &len)) != 0)
+#else
+  while ((p2 = find_next_token (&list_iterator, &len)) != 0)
+#endif
+    {
+      const char *p = p2 + len - 1;
+
+      while (p >= p2 && ! STOP_SET (*p, stop))
+        --p;
+
+      if (p >= p2)
+        {
+          if (is_notdir)
+            ++p;
+          else if (*p != '.')
+            continue;
+          o = variable_buffer_output (o, p, len - (p - p2));
+        }
+#ifdef HAVE_DOS_PATHS
+      /* Handle the case of "d:foo/bar".  */
+      else if (is_notdir && p2[0] && p2[1] == ':')
+        {
+          p = p2 + 2;
+          o = variable_buffer_output (o, p, len - (p - p2));
+        }
+#endif
+      else if (is_notdir)
+        o = variable_buffer_output (o, p2, len);
+
+      if (is_notdir || p >= p2)
+        {
+#ifdef VMS
+          if (vms_comma_separator)
+            o = variable_buffer_output (o, ",", 1);
+          else
+#endif
+          o = variable_buffer_output (o, " ", 1);
+
+          doneany = 1;
+        }
+    }
+
+  if (doneany)
+    /* Kill last space.  */
+    --o;
+
+  return o;
+}
+
+
+static char *
+func_basename_dir (char *o, char **argv, const char *funcname)
+{
+  /* Expand the argument.  */
+  const char *p3 = argv[0];
+  const char *p2;
+  int doneany = 0;
+  unsigned int len = 0;
+
+  int is_basename = funcname[0] == 'b';
+  int is_dir = !is_basename;
+  int stop = MAP_DIRSEP | (is_basename ? MAP_DOT : 0) | MAP_NUL;
+#ifdef VMS
+  /* As in func_notdir_suffix ... */
+  char *vms_p3 = alloca (strlen(p3) + 1);
+  int i;
+  for (i = 0; p3[i]; i++)
+    if (p3[i] == ',')
+      vms_p3[i] = ' ';
+    else
+      vms_p3[i] = p3[i];
+  vms_p3[i] = p3[i];
+  while ((p2 = find_next_token((const char**) &vms_p3, &len)) != 0)
+#else
+  while ((p2 = find_next_token (&p3, &len)) != 0)
+#endif
+    {
+      const char *p = p2 + len - 1;
+      while (p >= p2 && ! STOP_SET (*p, stop))
+        --p;
+
+      if (p >= p2 && (is_dir))
+        o = variable_buffer_output (o, p2, ++p - p2);
+      else if (p >= p2 && (*p == '.'))
+        o = variable_buffer_output (o, p2, p - p2);
+#ifdef HAVE_DOS_PATHS
+      /* Handle the "d:foobar" case */
+      else if (p2[0] && p2[1] == ':' && is_dir)
+        o = variable_buffer_output (o, p2, 2);
+#endif
+      else if (is_dir)
+#ifdef VMS
+        {
+          extern int vms_report_unix_paths;
+          if (vms_report_unix_paths)
+            o = variable_buffer_output (o, "./", 2);
+          else
+            o = variable_buffer_output (o, "[]", 2);
+        }
+#else
+#ifndef _AMIGA
+      o = variable_buffer_output (o, "./", 2);
+#else
+      ; /* Just a nop...  */
+#endif /* AMIGA */
+#endif /* !VMS */
+      else
+        /* The entire name is the basename.  */
+        o = variable_buffer_output (o, p2, len);
+
+#ifdef VMS
+      if (vms_comma_separator)
+        o = variable_buffer_output (o, ",", 1);
+      else
+#endif
+        o = variable_buffer_output (o, " ", 1);
+      doneany = 1;
+    }
+
+  if (doneany)
+    /* Kill last space.  */
+    --o;
+
+  return o;
+}
+
+#if 1 /* rewrite to new MAP stuff? */
+# ifdef VMS
+#  define IS_PATHSEP(c) ((c) == ']')
+# else
+#  ifdef HAVE_DOS_PATHS
+#   define IS_PATHSEP(c) ((c) == '/' || (c) == '\\')
+#  else
+#   define IS_PATHSEP(c) ((c) == '/')
+#  endif
+# endif
+#endif
+
+#ifdef CONFIG_WITH_ROOT_FUNC
+
+/*
+ $(root path)
+
+ This is mainly for dealing with drive letters and UNC paths on Windows
+ and OS/2.
+ */
+static char *
+func_root (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char  *paths = argv[0] ? argv[0] : "";
+  int          doneany = 0;
+  const char  *p;
+  unsigned int len;
+
+  while ((p = find_next_token (&paths, &len)) != 0)
+    {
+      const char *p2 = p;
+
+# ifdef HAVE_DOS_PATHS
+      if (   len >= 2
+          && p2[1] == ':'
+          && (   (p2[0] >= 'A' && p2[0] <= 'Z')
+              || (p2[0] >= 'a' && p2[0] <= 'z')))
+        {
+          p2 += 2;
+          len -= 2;
+        }
+      else if (len >= 4 && IS_PATHSEP(p2[0]) && IS_PATHSEP(p2[1])
+               && !IS_PATHSEP(p2[2]))
+        {
+          /* Min recognized UNC: "//./" - find the next slash
+             Typical root: "//srv/shr/" */
+          /* XXX: Check if //./ needs special handling. */
+
+          p2 += 3;
+          len -= 3;
+          while (len > 0 && !IS_PATHSEP(*p2))
+            p2++, len--;
+
+          if (len && IS_PATHSEP(p2[0]) && (len == 1 || !IS_PATHSEP(p2[1])))
+            {
+              p2++;
+              len--;
+
+              if (len) /* optional share */
+                while (len > 0 && !IS_PATHSEP(*p2))
+                  p2++, len--;
+            }
+          else
+            p2 = NULL;
+        }
+      else if (IS_PATHSEP(*p2))
+        {
+          p2++;
+          len--;
+        }
+      else
+        p2 = NULL;
+
+# elif defined (VMS) || defined (AMGIA)
+      /* XXX: VMS and AMGIA */
+      O (fatal, NILF, _("$(root ) is not implemented on this platform"));
+# else
+      if (IS_PATHSEP(*p2))
+        {
+          p2++;
+          len--;
+        }
+      else
+        p2 = NULL;
+# endif
+      if (p2 != NULL)
+        {
+          /* Include all subsequent path separators. */
+
+          while (len > 0 && IS_PATHSEP(*p2))
+            p2++, len--;
+          o = variable_buffer_output (o, p, p2 - p);
+          o = variable_buffer_output (o, " ", 1);
+          doneany = 1;
+        }
+    }
+
+  if (doneany)
+    /* Kill last space.  */
+    --o;
+
+  return o;
+}
+
+/*
+ $(notroot path)
+
+ This is mainly for dealing with drive letters and UNC paths on Windows
+ and OS/2.
+ */
+static char *
+func_notroot (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char  *paths = argv[0] ? argv[0] : "";
+  int          doneany = 0;
+  const char  *p;
+  unsigned int len;
+
+  while ((p = find_next_token (&paths, &len)) != 0)
+    {
+      const char *p2 = p;
+
+# ifdef HAVE_DOS_PATHS
+      if (   len >= 2
+          && p2[1] == ':'
+          && (   (p2[0] >= 'A' && p2[0] <= 'Z')
+              || (p2[0] >= 'a' && p2[0] <= 'z')))
+        {
+          p2 += 2;
+          len -= 2;
+        }
+      else if (len >= 4 && IS_PATHSEP(p2[0]) && IS_PATHSEP(p2[1])
+               && !IS_PATHSEP(p2[2]))
+        {
+          /* Min recognized UNC: "//./" - find the next slash
+             Typical root: "//srv/shr/" */
+          /* XXX: Check if //./ needs special handling. */
+          unsigned int saved_len = len;
+
+          p2 += 3;
+          len -= 3;
+          while (len > 0 && !IS_PATHSEP(*p2))
+            p2++, len--;
+
+          if (len && IS_PATHSEP(p2[0]) && (len == 1 || !IS_PATHSEP(p2[1])))
+            {
+              p2++;
+              len--;
+
+              if (len) /* optional share */
+                while (len > 0 && !IS_PATHSEP(*p2))
+                  p2++, len--;
+            }
+          else
+            {
+              p2 = p;
+              len = saved_len;
+            }
+        }
+
+# elif defined (VMS) || defined (AMGIA)
+      /* XXX: VMS and AMGIA */
+      O (fatal, NILF, _("$(root ) is not implemented on this platform"));
+# endif
+
+      /* Exclude all subsequent / leading path separators. */
+
+      while (len > 0 && IS_PATHSEP(*p2))
+        p2++, len--;
+      if (len > 0)
+        o = variable_buffer_output (o, p2, len);
+      else
+        o = variable_buffer_output (o, ".", 1);
+      o = variable_buffer_output (o, " ", 1);
+      doneany = 1;
+    }
+
+  if (doneany)
+    /* Kill last space.  */
+    --o;
+
+  return o;
+}
+
+#endif /* CONFIG_WITH_ROOT_FUNC */
+
+static char *
+func_addsuffix_addprefix (char *o, char **argv, const char *funcname)
+{
+  int fixlen = strlen (argv[0]);
+  const char *list_iterator = argv[1];
+  int is_addprefix = funcname[3] == 'p';
+  int is_addsuffix = !is_addprefix;
+
+  int doneany = 0;
+  const char *p;
+  unsigned int len;
+
+  while ((p = find_next_token (&list_iterator, &len)) != 0)
+    {
+      if (is_addprefix)
+        o = variable_buffer_output (o, argv[0], fixlen);
+      o = variable_buffer_output (o, p, len);
+      if (is_addsuffix)
+        o = variable_buffer_output (o, argv[0], fixlen);
+      o = variable_buffer_output (o, " ", 1);
+      doneany = 1;
+    }
+
+  if (doneany)
+    /* Kill last space.  */
+    --o;
+
+  return o;
+}
+
+static char *
+func_subst (char *o, char **argv, const char *funcname UNUSED)
+{
+  o = subst_expand (o, argv[2], argv[0], argv[1], strlen (argv[0]),
+                    strlen (argv[1]), 0);
+
+  return o;
+}
+
+#ifdef CONFIG_WITH_DEFINED_FUNCTIONS
+
+/* Used by func_firstdefined and func_lastdefined to parse the optional last
+   argument.  Returns 0 if the variable name is to be returned and 1 if it's
+   the variable value value. */
+static int
+parse_value_name_argument (const char *arg1, const char *funcname)
+{
+  const char *end;
+  int rc;
+
+  if (arg1 == NULL)
+    return 0;
+
+  end = strchr (arg1, '\0');
+  strip_whitespace (&arg1, &end);
+
+  if (!strncmp (arg1, "name", end - arg1))
+    rc = 0;
+  else if (!strncmp (arg1, "value", end - arg1))
+    rc = 1;
+  else
+# if 1 /* FIXME: later */
+    OSS (fatal, *expanding_var,
+         _("second argument to `%s' function must be `name' or `value', not `%s'"),
+         funcname, arg1);
+# else
+    {
+      /* check the expanded form */
+      char *exp = expand_argument (arg1, strchr (arg1, '\0'));
+      arg1 = exp;
+      end = strchr (arg1, '\0');
+      strip_whitespace (&arg1, &end);
+
+      if (!strncmp (arg1, "name", end - arg1))
+        rc = 0;
+      else if (!strncmp (arg1, "value", end - arg1))
+        rc = 1;
+      else
+        OSS (fatal, *expanding_var,
+             _("second argument to `%s' function must be `name' or `value', not `%s'"),
+             funcname, exp);
+      free (exp);
+    }
+# endif
+
+  return rc;
+}
+
+/* Given a list of variable names (ARGV[0]), returned the first variable which
+   is defined (i.e. value is not empty).  ARGV[1] indicates whether to return
+   the variable name or its value. */
+static char *
+func_firstdefined (char *o, char **argv, const char *funcname)
+{
+  unsigned int i;
+  const char *words = argv[0];    /* Use a temp variable for find_next_token */
+  const char *p;
+  int ret_value = parse_value_name_argument (argv[1], funcname);
+
+  /* FIXME: Optimize by not expanding the arguments, but instead expand them
+     one by one here.  This will require a find_next_token variant which
+     takes `$(' and `)' into account. */
+  while ((p = find_next_token (&words, &i)) != NULL)
+    {
+      struct variable *v = lookup_variable (p, i);
+      if (v && v->value_length)
+        {
+          if (ret_value)
+            variable_expand_string_2 (o, v->value, v->value_length, &o);
+          else
+            o = variable_buffer_output (o, p, i);
+          break;
+        }
+    }
+
+  return o;
+}
+
+/* Given a list of variable names (ARGV[0]), returned the last variable which
+   is defined (i.e. value is not empty).  ARGV[1] indicates whether to return
+   the variable name or its value. */
+static char *
+func_lastdefined (char *o, char **argv, const char *funcname)
+{
+  struct variable *last_v = NULL;
+  unsigned int i;
+  const char *words = argv[0];    /* Use a temp variable for find_next_token */
+  const char *p;
+  int ret_value = parse_value_name_argument (argv[1], funcname);
+
+  /* FIXME: Optimize this.  Walk from the end on unexpanded arguments. */
+  while ((p = find_next_token (&words, &i)) != NULL)
+    {
+      struct variable *v = lookup_variable (p, i);
+      if (v && v->value_length)
+        {
+          last_v = v;
+          break;
+        }
+    }
+
+  if (last_v != NULL)
+    {
+      if (ret_value)
+        variable_expand_string_2 (o, last_v->value, last_v->value_length, &o);
+      else
+        o = variable_buffer_output (o, last_v->name, last_v->length);
+    }
+  return o;
+}
+
+#endif /* CONFIG_WITH_DEFINED_FUNCTIONS */
+
+static char *
+func_firstword (char *o, char **argv, const char *funcname UNUSED)
+{
+  unsigned int i;
+  const char *words = argv[0];    /* Use a temp variable for find_next_token */
+  const char *p = find_next_token (&words, &i);
+
+  if (p != 0)
+    o = variable_buffer_output (o, p, i);
+
+  return o;
+}
+
+static char *
+func_lastword (char *o, char **argv, const char *funcname UNUSED)
+{
+  unsigned int i;
+  const char *words = argv[0];    /* Use a temp variable for find_next_token */
+  const char *p = NULL;
+  const char *t;
+
+  while ((t = find_next_token (&words, &i)))
+    p = t;
+
+  if (p != 0)
+    o = variable_buffer_output (o, p, i);
+
+  return o;
+}
+
+static char *
+func_words (char *o, char **argv, const char *funcname UNUSED)
+{
+  int i = 0;
+  const char *word_iterator = argv[0];
+  char buf[20];
+
+  while (find_next_token (&word_iterator, NULL) != 0)
+    ++i;
+
+  sprintf (buf, "%d", i);
+  o = variable_buffer_output (o, buf, strlen (buf));
+
+  return o;
+}
+
+/* Set begpp to point to the first non-whitespace character of the string,
+ * and endpp to point to the last non-whitespace character of the string.
+ * If the string is empty or contains nothing but whitespace, endpp will be
+ * begpp-1.
+ */
+char *
+strip_whitespace (const char **begpp, const char **endpp)
+{
+  while (*begpp <= *endpp && ISSPACE (**begpp))
+    (*begpp) ++;
+  while (*endpp >= *begpp && ISSPACE (**endpp))
+    (*endpp) --;
+  return (char *)*begpp;
+}
+
+static void
+check_numeric (const char *s, const char *msg)
+{
+  const char *end = s + strlen (s) - 1;
+  const char *beg = s;
+  strip_whitespace (&s, &end);
+
+  for (; s <= end; ++s)
+    if (!ISDIGIT (*s))  /* ISDIGIT only evals its arg once: see makeint.h.  */
+      break;
+
+  if (s <= end || end - beg < 0)
+    OSS (fatal, *expanding_var, "%s: '%s'", msg, beg);
+}
+
+
+
+static char *
+func_word (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char *end_p;
+  const char *p;
+  int i;
+
+  /* Check the first argument.  */
+  check_numeric (argv[0], _("non-numeric first argument to 'word' function"));
+  i = atoi (argv[0]);
+
+  if (i == 0)
+    O (fatal, *expanding_var,
+       _("first argument to 'word' function must be greater than 0"));
+
+  end_p = argv[1];
+  while ((p = find_next_token (&end_p, 0)) != 0)
+    if (--i == 0)
+      break;
+
+  if (i == 0)
+    o = variable_buffer_output (o, p, end_p - p);
+
+  return o;
+}
+
+static char *
+func_wordlist (char *o, char **argv, const char *funcname UNUSED)
+{
+  int start, count;
+
+  /* Check the arguments.  */
+  check_numeric (argv[0],
+                 _("non-numeric first argument to 'wordlist' function"));
+  check_numeric (argv[1],
+                 _("non-numeric second argument to 'wordlist' function"));
+
+  start = atoi (argv[0]);
+  if (start < 1)
+    ON (fatal, *expanding_var,
+        "invalid first argument to 'wordlist' function: '%d'", start);
+
+  count = atoi (argv[1]) - start + 1;
+
+  if (count > 0)
+    {
+      const char *p;
+      const char *end_p = argv[2];
+
+      /* Find the beginning of the "start"th word.  */
+      while (((p = find_next_token (&end_p, 0)) != 0) && --start)
+        ;
+
+      if (p)
+        {
+          /* Find the end of the "count"th word from start.  */
+          while (--count && (find_next_token (&end_p, 0) != 0))
+            ;
+
+          /* Return the stuff in the middle.  */
+          o = variable_buffer_output (o, p, end_p - p);
+        }
+    }
+
+  return o;
+}
+
+static char *
+func_findstring (char *o, char **argv, const char *funcname UNUSED)
+{
+  /* Find the first occurrence of the first string in the second.  */
+  if (strstr (argv[1], argv[0]) != 0)
+    o = variable_buffer_output (o, argv[0], strlen (argv[0]));
+
+  return o;
+}
+
+static char *
+func_foreach (char *o, char **argv, const char *funcname UNUSED)
+{
+  /* expand only the first two.  */
+  char *varname = expand_argument (argv[0], NULL);
+  char *list = expand_argument (argv[1], NULL);
+  const char *body = argv[2];
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  long body_len = strlen (body);
+#endif
+
+  int doneany = 0;
+  const char *list_iterator = list;
+  const char *p;
+  unsigned int len;
+  struct variable *var;
+
+  /* Clean up the variable name by removing whitespace.  */
+  char *vp = next_token (varname);
+  end_of_token (vp)[0] = '\0';
+
+  push_new_variable_scope ();
+  var = define_variable (vp, strlen (vp), "", o_automatic, 0);
+
+  /* loop through LIST,  put the value in VAR and expand BODY */
+  while ((p = find_next_token (&list_iterator, &len)) != 0)
+    {
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      char *result = 0;
+
+      free (var->value);
+      var->value = xstrndup (p, len);
+
+      result = allocated_variable_expand (body);
+
+      o = variable_buffer_output (o, result, strlen (result));
+      o = variable_buffer_output (o, " ", 1);
+      doneany = 1;
+      free (result);
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+      if (len >= var->value_alloc_len)
+        {
+# ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+          if (var->rdonly_val)
+            var->rdonly_val = 0;
+          else
+# endif
+            free (var->value);
+          var->value_alloc_len = VAR_ALIGN_VALUE_ALLOC (len + 1);
+          var->value = xmalloc (var->value_alloc_len);
+        }
+      memcpy (var->value, p, len);
+      var->value[len] = '\0';
+      var->value_length = len;
+      VARIABLE_CHANGED (var);
+
+      variable_expand_string_2 (o, body, body_len, &o);
+      o = variable_buffer_output (o, " ", 1);
+      doneany = 1;
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+    }
+
+  if (doneany)
+    /* Kill the last space.  */
+    --o;
+
+  pop_variable_scope ();
+  free (varname);
+  free (list);
+
+  return o;
+}
+
+#ifdef CONFIG_WITH_LOOP_FUNCTIONS
+
+/* Helper for func_for that evaluates the INIT and NEXT parts. */
+static void
+helper_eval (char *text, size_t text_len)
+{
+    unsigned int buf_len;
+    char *buf;
+
+    install_variable_buffer (&buf, &buf_len);
+    eval_buffer (text, NULL, text + text_len);
+    restore_variable_buffer (buf, buf_len);
+}
+
+/*
+  $(for init,condition,next,body)
+  */
+static char *
+func_for (char *o, char **argv, const char *funcname UNUSED)
+{
+  char        *init     = argv[0];
+  const char  *cond     = argv[1];
+  const char  *next     = argv[2];
+  size_t       next_len = strlen (next);
+  char        *next_buf = xmalloc (next_len + 1);
+  const char  *body     = argv[3];
+  size_t       body_len = strlen (body);
+  unsigned int doneany  = 0;
+
+  push_new_variable_scope ();
+
+  /* Evaluate INIT. */
+
+  helper_eval (init, strlen (init));
+
+  /* Loop till COND is false. */
+
+  while (expr_eval_if_conditionals (cond, NULL) == 0 /* true */)
+    {
+      /* Expand BODY. */
+
+      if (!doneany)
+        doneany = 1;
+      else
+        o = variable_buffer_output (o, " ", 1);
+      variable_expand_string_2 (o, body, body_len, &o);
+
+      /* Evaluate NEXT. */
+
+      memcpy (next_buf, next, next_len + 1);
+      helper_eval (next_buf, next_len);
+    }
+
+  pop_variable_scope ();
+  free (next_buf);
+
+  return o;
+}
+
+/*
+  $(while condition,body)
+ */
+static char *
+func_while (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char  *cond     = argv[0];
+  const char  *body     = argv[1];
+  size_t       body_len = strlen (body);
+  unsigned int doneany  = 0;
+
+  push_new_variable_scope ();
+
+  while (expr_eval_if_conditionals (cond, NULL) == 0 /* true */)
+    {
+      if (!doneany)
+        doneany = 1;
+      else
+        o = variable_buffer_output (o, " ", 1);
+      variable_expand_string_2 (o, body, body_len, &o);
+    }
+
+  pop_variable_scope ();
+
+  return o;
+}
+
+#endif /* CONFIG_WITH_LOOP_FUNCTIONS */
+
+struct a_word
+{
+  struct a_word *next;
+  struct a_word *chain;
+  char *str;
+  int length;
+  int matched;
+};
+
+static unsigned long
+a_word_hash_1 (const void *key)
+{
+  return_STRING_HASH_1 (((struct a_word const *) key)->str);
+}
+
+static unsigned long
+a_word_hash_2 (const void *key)
+{
+  return_STRING_HASH_2 (((struct a_word const *) key)->str);
+}
+
+static int
+a_word_hash_cmp (const void *x, const void *y)
+{
+  int result = ((struct a_word const *) x)->length - ((struct a_word const *) y)->length;
+  if (result)
+    return result;
+  return_STRING_COMPARE (((struct a_word const *) x)->str,
+                         ((struct a_word const *) y)->str);
+}
+
+struct a_pattern
+{
+  struct a_pattern *next;
+  char *str;
+  char *percent;
+  int length;
+#ifdef KMK
+  unsigned int sfxlen;
+#endif
+};
+
+static char *
+func_filter_filterout (char *o, char **argv, const char *funcname)
+{
+  struct a_word *wordhead;
+  struct a_word **wordtail;
+  struct a_word *wp;
+  struct a_pattern *pathead;
+  struct a_pattern **pattail;
+  struct a_pattern *pp;
+
+  struct hash_table a_word_table;
+  int is_filter = funcname[CSTRLEN ("filter")] == '\0';
+  const char *pat_iterator = argv[0];
+  const char *word_iterator = argv[1];
+  int literals = 0;
+  int words = 0;
+  int hashing = 0;
+  char *p;
+  unsigned int len;
+
+  /* Chop ARGV[0] up into patterns to match against the words.
+     We don't need to preserve it because our caller frees all the
+     argument memory anyway.  */
+
+  pattail = &pathead;
+  while ((p = find_next_token (&pat_iterator, &len)) != 0)
+    {
+      struct a_pattern *pat = alloca (sizeof (struct a_pattern));
+
+      *pattail = pat;
+      pattail = &pat->next;
+
+      if (*pat_iterator != '\0')
+        ++pat_iterator;
+
+      pat->str = p;
+      p[len] = '\0';
+      pat->percent = find_percent (p);
+      if (pat->percent == 0)
+        literals++;
+#ifdef KMK
+      pat->sfxlen = pat->percent ? strlen(pat->percent + 1) : 0;
+#endif
+
+      /* find_percent() might shorten the string so LEN is wrong.  */
+      pat->length = strlen (pat->str);
+    }
+  *pattail = 0;
+
+  /* Chop ARGV[1] up into words to match against the patterns.  */
+
+  wordtail = &wordhead;
+  while ((p = find_next_token (&word_iterator, &len)) != 0)
+    {
+      struct a_word *word = alloca (sizeof (struct a_word));
+
+      *wordtail = word;
+      wordtail = &word->next;
+
+      if (*word_iterator != '\0')
+        ++word_iterator;
+
+      p[len] = '\0';
+      word->str = p;
+      word->length = len;
+      word->matched = 0;
+      word->chain = 0;
+      words++;
+    }
+  *wordtail = 0;
+
+  /* Only use a hash table if arg list lengths justifies the cost.  */
+  hashing = (literals >= 2 && (literals * words) >= 10);
+  if (hashing)
+    {
+      hash_init (&a_word_table, words, a_word_hash_1, a_word_hash_2,
+                 a_word_hash_cmp);
+      for (wp = wordhead; wp != 0; wp = wp->next)
+        {
+          struct a_word *owp = hash_insert (&a_word_table, wp);
+          if (owp)
+            wp->chain = owp;
+        }
+    }
+
+  if (words)
+    {
+      int doneany = 0;
+
+      /* Run each pattern through the words, killing words.  */
+      for (pp = pathead; pp != 0; pp = pp->next)
+        {
+          if (pp->percent)
+            for (wp = wordhead; wp != 0; wp = wp->next)
+#ifdef KMK
+              wp->matched |= pattern_matches_ex (pp->str, pp->percent, pp->sfxlen,
+                                                 wp->str, wp->length);
+#else
+              wp->matched |= pattern_matches (pp->str, pp->percent, wp->str);
+#endif
+          else if (hashing)
+            {
+              struct a_word a_word_key;
+              a_word_key.str = pp->str;
+              a_word_key.length = pp->length;
+              wp = hash_find_item (&a_word_table, &a_word_key);
+              while (wp)
+                {
+                  wp->matched |= 1;
+                  wp = wp->chain;
+                }
+            }
+          else
+            for (wp = wordhead; wp != 0; wp = wp->next)
+              wp->matched |= (wp->length == pp->length
+                              && strneq (pp->str, wp->str, wp->length));
+        }
+
+      /* Output the words that matched (or didn't, for filter-out).  */
+      for (wp = wordhead; wp != 0; wp = wp->next)
+        if (is_filter ? wp->matched : !wp->matched)
+          {
+            o = variable_buffer_output (o, wp->str, strlen (wp->str));
+            o = variable_buffer_output (o, " ", 1);
+            doneany = 1;
+          }
+
+      if (doneany)
+        /* Kill the last space.  */
+        --o;
+    }
+
+  if (hashing)
+    hash_free (&a_word_table, 0);
+
+  return o;
+}
+
+
+static char *
+func_strip (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char *p = argv[0];
+  int doneany = 0;
+
+  while (*p != '\0')
+    {
+      int i=0;
+      const char *word_start;
+
+      NEXT_TOKEN (p);
+      word_start = p;
+      for (i=0; *p != '\0' && !ISSPACE (*p); ++p, ++i)
+        {}
+      if (!i)
+        break;
+      o = variable_buffer_output (o, word_start, i);
+      o = variable_buffer_output (o, " ", 1);
+      doneany = 1;
+    }
+
+  if (doneany)
+    /* Kill the last space.  */
+    --o;
+
+  return o;
+}
+
+/*
+  Print a warning or fatal message.
+*/
+static char *
+func_error (char *o, char **argv, const char *funcname)
+{
+  char **argvp;
+  char *msg, *p;
+  int len;
+
+  /* The arguments will be broken on commas.  Rather than create yet
+     another special case where function arguments aren't broken up,
+     just create a format string that puts them back together.  */
+  for (len=0, argvp=argv; *argvp != 0; ++argvp)
+    len += strlen (*argvp) + 2;
+
+  p = msg = alloca (len + 1);
+
+  for (argvp=argv; argvp[1] != 0; ++argvp)
+    {
+      strcpy (p, *argvp);
+      p += strlen (*argvp);
+      *(p++) = ',';
+      *(p++) = ' ';
+    }
+  strcpy (p, *argvp);
+
+  switch (*funcname)
+    {
+    case 'e':
+      OS (fatal, reading_file, "%s", msg);
+
+    case 'w':
+      OS (error, reading_file, "%s", msg);
+      break;
+
+    case 'i':
+      outputs (0, msg);
+      outputs (0, "\n");
+      break;
+
+    default:
+      OS (fatal, *expanding_var, "Internal error: func_error: '%s'", funcname);
+    }
+
+  /* The warning function expands to the empty string.  */
+  return o;
+}
+
+#ifdef KMK
+/* Compare strings *S1 and *S2.
+   Return negative if the first is less, positive if it is greater,
+   zero if they are equal.  */
+
+static int
+version_compare_wrapper (const void *v1, const void *v2)
+{
+  const char *s1 = *((char **)v1);
+  const char *s2 = *((char **)v2);
+  return version_compare (s1, s2);
+}
+#endif /* KMK */
+
+/*
+  chop argv[0] into words, and sort them.
+ */
+static char *
+func_sort (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char *t;
+  char **words;
+  int wordi;
+  char *p;
+  unsigned int len;
+
+  /* Find the maximum number of words we'll have.  */
+  t = argv[0];
+  wordi = 0;
+  while ((p = find_next_token (&t, NULL)) != 0)
+    {
+      ++t;
+      ++wordi;
+    }
+
+  words = xmalloc ((wordi == 0 ? 1 : wordi) * sizeof (char *));
+
+  /* Now assign pointers to each string in the array.  */
+  t = argv[0];
+  wordi = 0;
+  while ((p = find_next_token (&t, &len)) != 0)
+    {
+      if (*t != '\0') /* bird: Fixes access beyond end of string and overflowing words array. */
+        ++t;
+      p[len] = '\0';
+      words[wordi++] = p;
+    }
+
+  if (wordi)
+    {
+      int i;
+
+      /* Now sort the list of words.  */
+#ifdef KMK
+      if (funcname[0] == 'v' || funcname[1] == 'v')
+        qsort (words, wordi, sizeof (char *), version_compare_wrapper);
+      else
+        qsort (words, wordi, sizeof (char *), alpha_compare);
+#else
+      qsort (words, wordi, sizeof (char *), alpha_compare);
+#endif
+
+      /* Now write the sorted list, uniquified.  */
+#ifdef CONFIG_WITH_RSORT
+      if (*funcname != 'r')
+        {
+          /* sort */
+#endif
+          for (i = 0; i < wordi; ++i)
+            {
+              len = strlen (words[i]);
+              if (i == wordi - 1 || strlen (words[i + 1]) != len
+                  || strcmp (words[i], words[i + 1]))
+                {
+                  o = variable_buffer_output (o, words[i], len);
+                  o = variable_buffer_output (o, " ", 1);
+                }
+            }
+#ifdef CONFIG_WITH_RSORT
+        }
+      else
+        {
+          /* rsort - reverse the result */
+          i = wordi;
+          while (i-- > 0)
+            {
+              len = strlen (words[i]);
+              if (i == 0 || strlen (words[i - 1]) != len
+                  || strcmp (words[i], words[i - 1]))
+                {
+                  o = variable_buffer_output (o, words[i], len);
+                  o = variable_buffer_output (o, " ", 1);
+                }
+            }
+        }
+#endif
+
+      /* Kill the last space.  */
+      --o;
+    }
+
+  free (words);
+
+  return o;
+}
+
+/*
+  $(if condition,true-part[,false-part])
+
+  CONDITION is false iff it evaluates to an empty string.  White
+  space before and after condition are stripped before evaluation.
+
+  If CONDITION is true, then TRUE-PART is evaluated, otherwise FALSE-PART is
+  evaluated (if it exists).  Because only one of the two PARTs is evaluated,
+  you can use $(if ...) to create side-effects (with $(shell ...), for
+  example).
+*/
+
+static char *
+func_if (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char *begp = argv[0];
+  const char *endp = begp + strlen (argv[0]) - 1;
+  int result = 0;
+
+  /* Find the result of the condition: if we have a value, and it's not
+     empty, the condition is true.  If we don't have a value, or it's the
+     empty string, then it's false.  */
+
+  strip_whitespace (&begp, &endp);
+
+  if (begp <= endp)
+    {
+      char *expansion = expand_argument (begp, endp+1);
+
+      result = strlen (expansion);
+      free (expansion);
+    }
+
+  /* If the result is true (1) we want to eval the first argument, and if
+     it's false (0) we want to eval the second.  If the argument doesn't
+     exist we do nothing, otherwise expand it and add to the buffer.  */
+
+  argv += 1 + !result;
+
+  if (*argv)
+    {
+      char *expansion = expand_argument (*argv, NULL);
+
+      o = variable_buffer_output (o, expansion, strlen (expansion));
+
+      free (expansion);
+    }
+
+  return o;
+}
+
+/*
+  $(or condition1[,condition2[,condition3[...]]])
+
+  A CONDITION is false iff it evaluates to an empty string.  White
+  space before and after CONDITION are stripped before evaluation.
+
+  CONDITION1 is evaluated.  If it's true, then this is the result of
+  expansion.  If it's false, CONDITION2 is evaluated, and so on.  If none of
+  the conditions are true, the expansion is the empty string.
+
+  Once a CONDITION is true no further conditions are evaluated
+  (short-circuiting).
+*/
+
+static char *
+func_or (char *o, char **argv, const char *funcname UNUSED)
+{
+  for ( ; *argv ; ++argv)
+    {
+      const char *begp = *argv;
+      const char *endp = begp + strlen (*argv) - 1;
+      char *expansion;
+      int result = 0;
+
+      /* Find the result of the condition: if it's false keep going.  */
+
+      strip_whitespace (&begp, &endp);
+
+      if (begp > endp)
+        continue;
+
+      expansion = expand_argument (begp, endp+1);
+      result = strlen (expansion);
+
+      /* If the result is false keep going.  */
+      if (!result)
+        {
+          free (expansion);
+          continue;
+        }
+
+      /* It's true!  Keep this result and return.  */
+      o = variable_buffer_output (o, expansion, result);
+      free (expansion);
+      break;
+    }
+
+  return o;
+}
+
+/*
+  $(and condition1[,condition2[,condition3[...]]])
+
+  A CONDITION is false iff it evaluates to an empty string.  White
+  space before and after CONDITION are stripped before evaluation.
+
+  CONDITION1 is evaluated.  If it's false, then this is the result of
+  expansion.  If it's true, CONDITION2 is evaluated, and so on.  If all of
+  the conditions are true, the expansion is the result of the last condition.
+
+  Once a CONDITION is false no further conditions are evaluated
+  (short-circuiting).
+*/
+
+static char *
+func_and (char *o, char **argv, const char *funcname UNUSED)
+{
+  char *expansion;
+
+  while (1)
+    {
+      const char *begp = *argv;
+      const char *endp = begp + strlen (*argv) - 1;
+      int result;
+
+      /* An empty condition is always false.  */
+      strip_whitespace (&begp, &endp);
+      if (begp > endp)
+        return o;
+
+      expansion = expand_argument (begp, endp+1);
+      result = strlen (expansion);
+
+      /* If the result is false, stop here: we're done.  */
+      if (!result)
+        break;
+
+      /* Otherwise the result is true.  If this is the last one, keep this
+         result and quit.  Otherwise go on to the next one!  */
+
+      if (*(++argv))
+        free (expansion);
+      else
+        {
+          o = variable_buffer_output (o, expansion, result);
+          break;
+        }
+    }
+
+  free (expansion);
+
+  return o;
+}
+
+static char *
+func_wildcard (char *o, char **argv, const char *funcname UNUSED)
+{
+#ifdef _AMIGA
+   o = wildcard_expansion (argv[0], o);
+#else
+   char *p = string_glob (argv[0]);
+   o = variable_buffer_output (o, p, strlen (p));
+#endif
+   return o;
+}
+
+/*
+  $(eval <makefile string>)
+
+  Always resolves to the empty string.
+
+  Treat the arguments as a segment of makefile, and parse them.
+*/
+
+static char *
+func_eval (char *o, char **argv, const char *funcname UNUSED)
+{
+  char *buf;
+  unsigned int len;
+
+  /* Eval the buffer.  Pop the current variable buffer setting so that the
+     eval'd code can use its own without conflicting.  */
+
+  install_variable_buffer (&buf, &len);
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  eval_buffer (argv[0], NULL);
+#else
+  eval_buffer (argv[0], NULL, strchr (argv[0], '\0'));
+#endif
+
+  restore_variable_buffer (buf, len);
+
+  return o;
+}
+
+
+#ifdef CONFIG_WITH_EVALPLUS
+/* Same as func_eval except that we push and pop the local variable
+   context before evaluating the buffer. */
+static char *
+func_evalctx (char *o, char **argv, const char *funcname UNUSED)
+{
+  char *buf;
+  unsigned int len;
+
+  /* Eval the buffer.  Pop the current variable buffer setting so that the
+     eval'd code can use its own without conflicting.  */
+
+  install_variable_buffer (&buf, &len);
+
+  push_new_variable_scope ();
+
+  eval_buffer (argv[0], NULL, strchr (argv[0], '\0'));
+
+  pop_variable_scope ();
+
+  restore_variable_buffer (buf, len);
+
+  return o;
+}
+
+/* A mix of func_eval and func_value, saves memory for the expansion.
+  This implements both evalval and evalvalctx, the latter has its own
+  variable context just like evalctx. */
+static char *
+func_evalval (char *o, char **argv, const char *funcname)
+{
+  /* Look up the variable.  */
+  struct variable *v = lookup_variable (argv[0], strlen (argv[0]));
+  if (v)
+    {
+      char *buf;
+      unsigned int len;
+      int var_ctx;
+      size_t off;
+      const floc *reading_file_saved = reading_file;
+# ifdef CONFIG_WITH_MAKE_STATS
+      unsigned long long uStartTick = CURRENT_CLOCK_TICK();
+#  ifndef CONFIG_WITH_COMPILER
+      MAKE_STATS_2(v->evalval_count++);
+#  endif
+# endif
+
+      var_ctx = !strcmp (funcname, "evalvalctx");
+      if (var_ctx)
+        push_new_variable_scope ();
+      if (v->fileinfo.filenm)
+        reading_file = &v->fileinfo;
+
+# ifdef CONFIG_WITH_COMPILER
+      /* If this variable has been evaluated more than a few times, it make
+         sense to compile it to speed up the processing. */
+
+      v->evalval_count++;
+      if (   v->evalprog
+          || (v->evalval_count == 3 && kmk_cc_compile_variable_for_eval (v)))
+        {
+          install_variable_buffer (&buf, &len); /* Really necessary? */
+          kmk_exec_eval_variable (v);
+          restore_variable_buffer (buf, len);
+        }
+      else
+# endif
+      {
+        /* Make a copy of the value to the variable buffer first since
+           eval_buffer will make changes to its input. */
+
+        off = o - variable_buffer;
+        variable_buffer_output (o, v->value, v->value_length + 1);
+        o = variable_buffer + off;
+        assert (!o[v->value_length]);
+
+        install_variable_buffer (&buf, &len); /* Really necessary? */
+        eval_buffer (o, NULL, o + v->value_length);
+        restore_variable_buffer (buf, len);
+      }
+
+      reading_file = reading_file_saved;
+      if (var_ctx)
+        pop_variable_scope ();
+
+      MAKE_STATS_2(v->cTicksEvalVal += CURRENT_CLOCK_TICK() - uStartTick);
+    }
+
+  return o;
+}
+
+/* Optimizes the content of one or more variables to save time in
+   the eval functions.  This function will collapse line continuations
+   and remove comments.  */
+static char *
+func_eval_optimize_variable (char *o, char **argv, const char *funcname)
+{
+  unsigned int i;
+
+  for (i = 0; argv[i]; i++)
+    {
+      struct variable *v = lookup_variable (argv[i], strlen (argv[i]));
+# ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+      if (v && v->origin != o_automatic && !v->rdonly_val)
+# else
+      if (v && v->origin != o_automatic)
+# endif
+        {
+          char *eos, *src;
+
+          eos = collapse_continuations (v->value, v->value_length);
+          v->value_length = eos - v->value;
+
+          /* remove comments */
+
+          src = memchr (v->value, '#', v->value_length);
+          if (src)
+            {
+              unsigned char ch = '\0';
+              char *dst = src;
+              do
+                {
+                  /* drop blanks preceeding the comment */
+                  while (dst > v->value)
+                    {
+                      ch = (unsigned char)dst[-1];
+                      if (!ISBLANK (ch))
+                        break;
+                      dst--;
+                    }
+
+                  /* advance SRC to eol / eos. */
+                  src = memchr (src, '\n', eos - src);
+                  if (!src)
+                      break;
+
+                  /* drop a preceeding newline if possible (full line comment) */
+                  if (dst > v->value && dst[-1] == '\n')
+                    dst--;
+
+                  /* copy till next comment or eol. */
+                  while (src < eos)
+                    {
+                      ch = *src++;
+                      if (ch == '#')
+                        break;
+                      *dst++ = ch;
+                    }
+                }
+              while (ch == '#' && src < eos);
+
+              *dst = '\0';
+              v->value_length = dst - v->value;
+            }
+
+          VARIABLE_CHANGED (v);
+
+# ifdef CONFIG_WITH_COMPILER
+          /* Compile the variable for evalval, evalctx and expansion. */
+
+          if (   v->recursive
+              && !IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR (v))
+                kmk_cc_compile_variable_for_expand (v);
+          kmk_cc_compile_variable_for_eval (v);
+# endif
+        }
+      else if (v)
+        OSS (error, NILF, _("$(%s ): variable `%s' is of the wrong type\n"), funcname, v->name);
+    }
+
+  return o;
+}
+
+#endif /* CONFIG_WITH_EVALPLUS */
+
+static char *
+func_value (char *o, char **argv, const char *funcname UNUSED)
+{
+  /* Look up the variable.  */
+  struct variable *v = lookup_variable (argv[0], strlen (argv[0]));
+
+  /* Copy its value into the output buffer without expanding it.  */
+  if (v)
+#ifdef CONFIG_WITH_VALUE_LENGTH
+    {
+      assert (v->value_length == strlen (v->value));
+      o = variable_buffer_output (o, v->value, v->value_length);
+    }
+#else
+    o = variable_buffer_output (o, v->value, strlen (v->value));
+#endif
+
+  return o;
+}
+
+/*
+  \r is replaced on UNIX as well. Is this desirable?
+ */
+static void
+fold_newlines (char *buffer, unsigned int *length, int trim_newlines)
+{
+  char *dst = buffer;
+  char *src = buffer;
+  char *last_nonnl = buffer - 1;
+  src[*length] = 0;
+  for (; *src != '\0'; ++src)
+    {
+      if (src[0] == '\r' && src[1] == '\n')
+        continue;
+      if (*src == '\n')
+        {
+          *dst++ = ' ';
+        }
+      else
+        {
+          last_nonnl = dst;
+          *dst++ = *src;
+        }
+    }
+
+  if (!trim_newlines && (last_nonnl < (dst - 2)))
+    last_nonnl = dst - 2;
+
+  *(++last_nonnl) = '\0';
+  *length = last_nonnl - buffer;
+}
+
+pid_t shell_function_pid = 0;
+static int shell_function_completed;
+
+void
+shell_completed (int exit_code, int exit_sig)
+{
+  char buf[256];
+
+  shell_function_pid = 0;
+  if (exit_sig == 0 && exit_code == 127)
+    shell_function_completed = -1;
+  else
+    shell_function_completed = 1;
+
+  sprintf (buf, "%d", exit_code);
+  define_variable_cname (".SHELLSTATUS", buf, o_override, 0);
+}
+
+#ifdef WINDOWS32
+/*untested*/
+
+# ifndef CONFIG_NEW_WIN_CHILDREN
+#include <windows.h>
+#include <io.h>
+#include "sub_proc.h"
+
+int
+windows32_openpipe (int *pipedes, int errfd, pid_t *pid_p, char **command_argv, char **envp)
+{
+  SECURITY_ATTRIBUTES saAttr;
+  HANDLE hIn = INVALID_HANDLE_VALUE;
+  HANDLE hErr = INVALID_HANDLE_VALUE;
+  HANDLE hChildOutRd;
+  HANDLE hChildOutWr;
+  HANDLE hProcess, tmpIn, tmpErr;
+  DWORD e;
+
+  /* Set status for return.  */
+  pipedes[0] = pipedes[1] = -1;
+  *pid_p = (pid_t)-1;
+
+  saAttr.nLength = sizeof (SECURITY_ATTRIBUTES);
+  saAttr.bInheritHandle = TRUE;
+  saAttr.lpSecurityDescriptor = NULL;
+
+  /* Standard handles returned by GetStdHandle can be NULL or
+     INVALID_HANDLE_VALUE if the parent process closed them.  If that
+     happens, we open the null device and pass its handle to
+     process_begin below as the corresponding handle to inherit.  */
+  tmpIn = GetStdHandle (STD_INPUT_HANDLE);
+  if (DuplicateHandle (GetCurrentProcess (), tmpIn,
+                       GetCurrentProcess (), &hIn,
+                       0, TRUE, DUPLICATE_SAME_ACCESS) == FALSE)
+    {
+      e = GetLastError ();
+      if (e == ERROR_INVALID_HANDLE)
+        {
+          tmpIn = CreateFile ("NUL", GENERIC_READ,
+                              FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+                              OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+          if (tmpIn != INVALID_HANDLE_VALUE
+              && DuplicateHandle (GetCurrentProcess (), tmpIn,
+                                  GetCurrentProcess (), &hIn,
+                                  0, TRUE, DUPLICATE_SAME_ACCESS) == FALSE)
+            CloseHandle (tmpIn);
+        }
+      if (hIn == INVALID_HANDLE_VALUE)
+        {
+          ON (error, NILF,
+              _("windows32_openpipe: DuplicateHandle(In) failed (e=%ld)\n"), e);
+          return -1;
+        }
+    }
+  tmpErr = (HANDLE)_get_osfhandle (errfd);
+  if (DuplicateHandle (GetCurrentProcess (), tmpErr,
+                       GetCurrentProcess (), &hErr,
+                       0, TRUE, DUPLICATE_SAME_ACCESS) == FALSE)
+    {
+      e = GetLastError ();
+      if (e == ERROR_INVALID_HANDLE)
+        {
+          tmpErr = CreateFile ("NUL", GENERIC_WRITE,
+                               FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+                               OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+          if (tmpErr != INVALID_HANDLE_VALUE
+              && DuplicateHandle (GetCurrentProcess (), tmpErr,
+                                  GetCurrentProcess (), &hErr,
+                                  0, TRUE, DUPLICATE_SAME_ACCESS) == FALSE)
+            CloseHandle (tmpErr);
+        }
+      if (hErr == INVALID_HANDLE_VALUE)
+        {
+          ON (error, NILF,
+              _("windows32_openpipe: DuplicateHandle(Err) failed (e=%ld)\n"), e);
+          return -1;
+        }
+    }
+
+  if (! CreatePipe (&hChildOutRd, &hChildOutWr, &saAttr, 0))
+    {
+      ON (error, NILF, _("CreatePipe() failed (e=%ld)\n"), GetLastError());
+      return -1;
+    }
+
+  hProcess = process_init_fd (hIn, hChildOutWr, hErr);
+
+  if (!hProcess)
+    {
+      O (error, NILF, _("windows32_openpipe(): process_init_fd() failed\n"));
+      return -1;
+    }
+
+  /* make sure that CreateProcess() has Path it needs */
+  sync_Path_environment ();
+  /* 'sync_Path_environment' may realloc 'environ', so take note of
+     the new value.  */
+  envp = environ;
+
+  if (! process_begin (hProcess, command_argv, envp, command_argv[0], NULL))
+    {
+      /* register process for wait */
+      process_register (hProcess);
+
+      /* set the pid for returning to caller */
+      *pid_p = (pid_t) hProcess;
+
+      /* set up to read data from child */
+      pipedes[0] = _open_osfhandle ((intptr_t) hChildOutRd, O_RDONLY);
+
+      /* this will be closed almost right away */
+      pipedes[1] = _open_osfhandle ((intptr_t) hChildOutWr, O_APPEND);
+      return 0;
+    }
+  else
+    {
+      /* reap/cleanup the failed process */
+      process_cleanup (hProcess);
+
+      /* close handles which were duplicated, they weren't used */
+      if (hIn != INVALID_HANDLE_VALUE)
+        CloseHandle (hIn);
+      if (hErr != INVALID_HANDLE_VALUE)
+        CloseHandle (hErr);
+
+      /* close pipe handles, they won't be used */
+      CloseHandle (hChildOutRd);
+      CloseHandle (hChildOutWr);
+
+      return -1;
+    }
+}
+# endif /* !CONFIG_NEW_WIN_CHILDREN */
+#endif
+
+
+#ifdef __MSDOS__
+FILE *
+msdos_openpipe (int* pipedes, int *pidp, char *text)
+{
+  FILE *fpipe=0;
+  /* MSDOS can't fork, but it has 'popen'.  */
+  struct variable *sh = lookup_variable ("SHELL", 5);
+  int e;
+  extern int dos_command_running, dos_status;
+
+  /* Make sure not to bother processing an empty line.  */
+  NEXT_TOKEN (text);
+  if (*text == '\0')
+    return 0;
+
+  if (sh)
+    {
+      char buf[PATH_MAX + 7];
+      /* This makes sure $SHELL value is used by $(shell), even
+         though the target environment is not passed to it.  */
+      sprintf (buf, "SHELL=%s", sh->value);
+      putenv (buf);
+    }
+
+  e = errno;
+  errno = 0;
+  dos_command_running = 1;
+  dos_status = 0;
+  /* If dos_status becomes non-zero, it means the child process
+     was interrupted by a signal, like SIGINT or SIGQUIT.  See
+     fatal_error_signal in commands.c.  */
+  fpipe = popen (text, "rt");
+  dos_command_running = 0;
+  if (!fpipe || dos_status)
+    {
+      pipedes[0] = -1;
+      *pidp = -1;
+      if (dos_status)
+        errno = EINTR;
+      else if (errno == 0)
+        errno = ENOMEM;
+      if (fpipe)
+        pclose (fpipe);
+      shell_completed (127, 0);
+    }
+  else
+    {
+      pipedes[0] = fileno (fpipe);
+      *pidp = 42; /* Yes, the Meaning of Life, the Universe, and Everything! */
+      errno = e;
+    }
+  return fpipe;
+}
+#endif
+
+/*
+  Do shell spawning, with the naughty bits for different OSes.
+ */
+
+#ifdef VMS
+
+/* VMS can't do $(shell ...)  */
+
+char *
+func_shell_base (char *o, char **argv, int trim_newlines)
+{
+  fprintf (stderr, "This platform does not support shell\n");
+  die (MAKE_TROUBLE);
+  return NULL;
+}
+
+#define func_shell 0
+
+#else
+#ifndef _AMIGA
+char *
+func_shell_base (char *o, char **argv, int trim_newlines)
+{
+  char *batch_filename = NULL;
+  int errfd;
+#ifdef __MSDOS__
+  FILE *fpipe;
+#endif
+  char **command_argv;
+  const char * volatile error_prefix; /* bird: this volatile ~~and the 'o' one~~, is for shutting up gcc warnings */
+  char **envp;
+  int pipedes[2];
+  pid_t pid;
+
+#ifndef __MSDOS__
+#ifdef WINDOWS32
+  /* Reset just_print_flag.  This is needed on Windows when batch files
+     are used to run the commands, because we normally refrain from
+     creating batch files under -n.  */
+  int j_p_f = just_print_flag;
+  just_print_flag = 0;
+#endif
+
+  /* Construct the argument list.  */
+  command_argv = construct_command_argv (argv[0], NULL, NULL, 0,
+                                         &batch_filename);
+  if (command_argv == 0)
+    {
+#ifdef WINDOWS32
+      just_print_flag = j_p_f;
+#endif
+      return o;
+    }
+#endif /* !__MSDOS__ */
+
+  /* Using a target environment for 'shell' loses in cases like:
+       export var = $(shell echo foobie)
+       bad := $(var)
+     because target_environment hits a loop trying to expand $(var) to put it
+     in the environment.  This is even more confusing when 'var' was not
+     explicitly exported, but just appeared in the calling environment.
+
+     See Savannah bug #10593.
+
+  envp = target_environment (NULL);
+  */
+
+  envp = environ;
+
+  /* For error messages.  */
+  if (reading_file && reading_file->filenm)
+    {
+      char *p = alloca (strlen (reading_file->filenm)+11+4);
+      sprintf (p, "%s:%lu: ", reading_file->filenm,
+               reading_file->lineno + reading_file->offset);
+      error_prefix = p;
+    }
+  else
+    error_prefix = "";
+
+  /* Set up the output in case the shell writes something.  */
+  output_start ();
+
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+  errfd = -1; /** @todo fixme */
+#else
+  errfd = (output_context && output_context->err >= 0
+           ? output_context->err : FD_STDERR);
+#endif
+
+#if defined(__MSDOS__)
+  fpipe = msdos_openpipe (pipedes, &pid, argv[0]);
+  if (pipedes[0] < 0)
+    {
+      perror_with_name (error_prefix, "pipe");
+      return o;
+    }
+
+#elif defined(WINDOWS32)
+# ifdef CONFIG_NEW_WIN_CHILDREN
+  pipedes[1] = -1;
+  MkWinChildCreateWithStdOutPipe (command_argv, envp, errfd, &pid, &pipedes[0]);
+# else
+  windows32_openpipe (pipedes, errfd, &pid, command_argv, envp);
+# endif
+  /* Restore the value of just_print_flag.  */
+  just_print_flag = j_p_f;
+
+  if (pipedes[0] < 0)
+    {
+      /* Open of the pipe failed, mark as failed execution.  */
+      shell_completed (127, 0);
+      perror_with_name (error_prefix, "pipe");
+      return o;
+    }
+
+#else
+  if (pipe (pipedes) < 0)
+    {
+      perror_with_name (error_prefix, "pipe");
+      return o;
+    }
+
+  /* Close handles that are unnecessary for the child process.  */
+  CLOSE_ON_EXEC(pipedes[1]);
+  CLOSE_ON_EXEC(pipedes[0]);
+
+  {
+    struct output out;
+    out.syncout = 1;
+    out.out = pipedes[1];
+    out.err = errfd;
+
+    pid = child_execute_job (&out, 1, command_argv, envp);
+  }
+
+  if (pid < 0)
+    {
+      perror_with_name (error_prefix, "fork");
+      return o;
+    }
+#endif
+
+  {
+    char *buffer;
+    unsigned int maxlen, i;
+    int cc;
+
+    /* Record the PID for reap_children.  */
+    shell_function_pid = pid;
+#ifndef  __MSDOS__
+    shell_function_completed = 0;
+
+    /* Free the storage only the child needed.  */
+    free (command_argv[0]);
+    free (command_argv);
+
+    /* Close the write side of the pipe.  We test for -1, since
+       pipedes[1] is -1 on MS-Windows, and some versions of MS
+       libraries barf when 'close' is called with -1.  */
+    if (pipedes[1] >= 0)
+      close (pipedes[1]);
+#endif
+
+    /* Set up and read from the pipe.  */
+
+    maxlen = 200;
+    buffer = xmalloc (maxlen + 1);
+
+    /* Read from the pipe until it gets EOF.  */
+    for (i = 0; ; i += cc)
+      {
+        if (i == maxlen)
+          {
+            maxlen += 512;
+            buffer = xrealloc (buffer, maxlen + 1);
+          }
+
+        EINTRLOOP (cc, read (pipedes[0], &buffer[i], maxlen - i));
+        if (cc <= 0)
+          break;
+      }
+    buffer[i] = '\0';
+
+    /* Close the read side of the pipe.  */
+#ifdef  __MSDOS__
+    if (fpipe)
+      {
+        int st = pclose (fpipe);
+        shell_completed (st, 0);
+      }
+#else
+# ifdef _MSC_VER /* Avoid annoying msvcrt when debugging. (bird) */
+      if (pipedes[0] != -1)
+# endif
+        (void) close (pipedes[0]);
+#endif
+
+    /* Loop until child_handler or reap_children()  sets
+       shell_function_completed to the status of our child shell.  */
+    while (shell_function_completed == 0)
+      reap_children (1, 0);
+
+    if (batch_filename)
+      {
+        DB (DB_VERBOSE, (_("Cleaning up temporary batch file %s\n"),
+                         batch_filename));
+        remove (batch_filename);
+        free (batch_filename);
+      }
+    shell_function_pid = 0;
+
+    /* shell_completed() will set shell_function_completed to 1 when the
+       child dies normally, or to -1 if it dies with status 127, which is
+       most likely an exec fail.  */
+
+    if (shell_function_completed == -1)
+      {
+        /* This likely means that the execvp failed, so we should just
+           write the error message in the pipe from the child.  */
+        fputs (buffer, stderr);
+        fflush (stderr);
+      }
+    else
+      {
+        /* The child finished normally.  Replace all newlines in its output
+           with spaces, and put that in the variable output buffer.  */
+        fold_newlines (buffer, &i, trim_newlines);
+        o = variable_buffer_output (o, buffer, i);
+      }
+
+    free (buffer);
+  }
+
+  return o;
+}
+
+#else   /* _AMIGA */
+
+/* Do the Amiga version of func_shell.  */
+
+char *
+func_shell_base (char *o, char **argv, int trim_newlines)
+{
+  /* Amiga can't fork nor spawn, but I can start a program with
+     redirection of my choice.  However, this means that we
+     don't have an opportunity to reopen stdout to trap it.  Thus,
+     we save our own stdout onto a new descriptor and dup a temp
+     file's descriptor onto our stdout temporarily.  After we
+     spawn the shell program, we dup our own stdout back to the
+     stdout descriptor.  The buffer reading is the same as above,
+     except that we're now reading from a file.  */
+
+#include <dos/dos.h>
+#include <proto/dos.h>
+
+  BPTR child_stdout;
+  char tmp_output[FILENAME_MAX];
+  unsigned int maxlen = 200, i;
+  int cc;
+  char * buffer, * ptr;
+  char ** aptr;
+  int len = 0;
+  char* batch_filename = NULL;
+
+  /* Construct the argument list.  */
+  command_argv = construct_command_argv (argv[0], NULL, NULL, 0,
+                                         &batch_filename);
+  if (command_argv == 0)
+    return o;
+
+  /* Note the mktemp() is a security hole, but this only runs on Amiga.
+     Ideally we would use output_tmpfile(), but this uses a special
+     Open(), not fopen(), and I'm not familiar enough with the code to mess
+     with it.  */
+  strcpy (tmp_output, "t:MakeshXXXXXXXX");
+  mktemp (tmp_output);
+  child_stdout = Open (tmp_output, MODE_NEWFILE);
+
+  for (aptr=command_argv; *aptr; aptr++)
+    len += strlen (*aptr) + 1;
+
+  buffer = xmalloc (len + 1);
+  ptr = buffer;
+
+  for (aptr=command_argv; *aptr; aptr++)
+    {
+      strcpy (ptr, *aptr);
+      ptr += strlen (ptr) + 1;
+      *ptr ++ = ' ';
+      *ptr = 0;
+    }
+
+  ptr[-1] = '\n';
+
+  Execute (buffer, NULL, child_stdout);
+  free (buffer);
+
+  Close (child_stdout);
+
+  child_stdout = Open (tmp_output, MODE_OLDFILE);
+
+  buffer = xmalloc (maxlen);
+  i = 0;
+  do
+    {
+      if (i == maxlen)
+        {
+          maxlen += 512;
+          buffer = xrealloc (buffer, maxlen + 1);
+        }
+
+      cc = Read (child_stdout, &buffer[i], maxlen - i);
+      if (cc > 0)
+        i += cc;
+    } while (cc > 0);
+
+  Close (child_stdout);
+
+  fold_newlines (buffer, &i, trim_newlines);
+  o = variable_buffer_output (o, buffer, i);
+  free (buffer);
+  return o;
+}
+#endif  /* _AMIGA */
+
+static char *
+func_shell (char *o, char **argv, const char *funcname UNUSED)
+{
+  return func_shell_base (o, argv, 1);
+}
+#endif  /* !VMS */
+
+#ifdef EXPERIMENTAL
+
+/*
+  equality. Return is string-boolean, i.e., the empty string is false.
+ */
+static char *
+func_eq (char *o, char **argv, const char *funcname UNUSED)
+{
+  int result = ! strcmp (argv[0], argv[1]);
+  o = variable_buffer_output (o,  result ? "1" : "", result);
+  return o;
+}
+
+
+/*
+  string-boolean not operator.
+ */
+static char *
+func_not (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char *s = argv[0];
+  int result = 0;
+  NEXT_TOKEN (s);
+  result = ! (*s);
+  o = variable_buffer_output (o,  result ? "1" : "", result);
+  return o;
+}
+#endif
+
+
+#ifdef HAVE_DOS_PATHS
+# ifdef __CYGWIN__
+#  define IS_ABSOLUTE(n) ((n[0] && n[1] == ':') || STOP_SET (n[0], MAP_DIRSEP))
+# else
+#  define IS_ABSOLUTE(n) (n[0] && n[1] == ':')
+# endif
+# define ROOT_LEN 3
+#else
+#define IS_ABSOLUTE(n) (n[0] == '/')
+#define ROOT_LEN 1
+#endif
+
+/* Return the absolute name of file NAME which does not contain any '.',
+   '..' components nor any repeated path separators ('/').   */
+#ifdef KMK
+char *
+#else
+static char *
+#endif
+abspath (const char *name, char *apath)
+{
+  char *dest;
+  const char *start, *end, *apath_limit;
+  unsigned long root_len = ROOT_LEN;
+
+  if (name[0] == '\0' || apath == NULL)
+    return NULL;
+
+#ifdef WINDOWS32                                                    /* bird */
+  dest = unix_slashes_resolved (name, apath, GET_PATH_MAX);
+  if (!dest)
+    return NULL;
+  dest = strchr(apath, '\0');
+
+  (void)end; (void)start; (void)apath_limit;
+
+#elif defined __OS2__                                               /* bird */
+  if (_abspath(apath, name, GET_PATH_MAX))
+    return NULL;
+  dest = strchr(apath, '\0');
+
+  (void)end; (void)start; (void)apath_limit; (void)dest;
+
+#else /* !WINDOWS32 && !__OS2__ */
+  apath_limit = apath + GET_PATH_MAX;
+
+  if (!IS_ABSOLUTE(name))
+    {
+      /* It is unlikely we would make it until here but just to make sure. */
+      if (!starting_directory)
+        return NULL;
+
+      strcpy (apath, starting_directory);
+
+#ifdef HAVE_DOS_PATHS
+      if (STOP_SET (name[0], MAP_DIRSEP))
+        {
+          if (STOP_SET (name[1], MAP_DIRSEP))
+            {
+              /* A UNC.  Don't prepend a drive letter.  */
+              apath[0] = name[0];
+              apath[1] = name[1];
+              root_len = 2;
+            }
+          /* We have /foo, an absolute file name except for the drive
+             letter.  Assume the missing drive letter is the current
+             drive, which we can get if we remove from starting_directory
+             everything past the root directory.  */
+          apath[root_len] = '\0';
+        }
+#endif
+
+      dest = strchr (apath, '\0');
+    }
+  else
+    {
+#if defined(__CYGWIN__) && defined(HAVE_DOS_PATHS)
+      if (STOP_SET (name[0], MAP_DIRSEP))
+        root_len = 1;
+#endif
+#ifdef KMK
+      memcpy (apath, name, root_len);
+      apath[root_len] = '\0';
+      assert (strlen (apath) == root_len);
+#else
+      strncpy (apath, name, root_len);
+      apath[root_len] = '\0';
+#endif
+      dest = apath + root_len;
+      /* Get past the root, since we already copied it.  */
+      name += root_len;
+#ifdef HAVE_DOS_PATHS
+      if (! STOP_SET (apath[root_len - 1], MAP_DIRSEP))
+        {
+          /* Convert d:foo into d:./foo and increase root_len.  */
+          apath[2] = '.';
+          apath[3] = '/';
+          dest++;
+          root_len++;
+          /* strncpy above copied one character too many.  */
+          name--;
+        }
+      else
+        apath[root_len - 1] = '/'; /* make sure it's a forward slash */
+#endif
+    }
+
+  for (start = end = name; *start != '\0'; start = end)
+    {
+      unsigned long len;
+
+      /* Skip sequence of multiple path-separators.  */
+      while (STOP_SET (*start, MAP_DIRSEP))
+        ++start;
+
+      /* Find end of path component.  */
+      for (end = start; ! STOP_SET (*end, MAP_DIRSEP|MAP_NUL); ++end)
+        ;
+
+      len = end - start;
+
+      if (len == 0)
+        break;
+      else if (len == 1 && start[0] == '.')
+        /* nothing */;
+      else if (len == 2 && start[0] == '.' && start[1] == '.')
+        {
+          /* Back up to previous component, ignore if at root already.  */
+          if (dest > apath + root_len)
+            for (--dest; ! STOP_SET (dest[-1], MAP_DIRSEP); --dest)
+              ;
+        }
+      else
+        {
+          if (! STOP_SET (dest[-1], MAP_DIRSEP))
+            *dest++ = '/';
+
+          if (dest + len >= apath_limit)
+            return NULL;
+
+          dest = memcpy (dest, start, len);
+          dest += len;
+          *dest = '\0';
+        }
+    }
+#endif /* !WINDOWS32 && !__OS2__ */
+
+  /* Unless it is root strip trailing separator.  */
+  if (dest > apath + root_len && STOP_SET (dest[-1], MAP_DIRSEP))
+    --dest;
+
+  *dest = '\0';
+
+  return apath;
+}
+
+
+static char *
+func_realpath (char *o, char **argv, const char *funcname UNUSED)
+{
+  /* Expand the argument.  */
+  const char *p = argv[0];
+  const char *path = 0;
+  int doneany = 0;
+  unsigned int len = 0;
+
+  while ((path = find_next_token (&p, &len)) != 0)
+    {
+      if (len < GET_PATH_MAX)
+        {
+          char *rp;
+          struct stat st;
+          PATH_VAR (in);
+          PATH_VAR (out);
+
+          strncpy (in, path, len);
+          in[len] = '\0';
+
+#ifdef HAVE_REALPATH
+          ENULLLOOP (rp, realpath (in, out));
+#else
+          rp = abspath (in, out);
+#endif
+
+          if (rp)
+            {
+              int r;
+              EINTRLOOP (r, stat (out, &st));
+              if (r == 0)
+                {
+                  o = variable_buffer_output (o, out, strlen (out));
+                  o = variable_buffer_output (o, " ", 1);
+                  doneany = 1;
+                }
+            }
+        }
+    }
+
+  /* Kill last space.  */
+  if (doneany)
+    --o;
+
+  return o;
+}
+
+static char *
+func_file (char *o, char **argv, const char *funcname UNUSED)
+{
+  char *fn = argv[0];
+
+  if (fn[0] == '>')
+    {
+      FILE *fp;
+#ifdef KMK_FOPEN_NO_INHERIT_MODE
+      const char *mode = "w" KMK_FOPEN_NO_INHERIT_MODE;
+#else
+      const char *mode = "w";
+#endif
+
+      /* We are writing a file.  */
+      ++fn;
+      if (fn[0] == '>')
+        {
+#ifdef KMK_FOPEN_NO_INHERIT_MODE
+          mode = "a" KMK_FOPEN_NO_INHERIT_MODE;
+#else
+          mode = "a";
+#endif
+          ++fn;
+        }
+      NEXT_TOKEN (fn);
+
+      if (fn[0] == '\0')
+        O (fatal, *expanding_var, _("file: missing filename"));
+
+      ENULLLOOP (fp, fopen (fn, mode));
+      if (fp == NULL)
+        OSS (fatal, reading_file, _("open: %s: %s"), fn, strerror (errno));
+
+      if (argv[1])
+        {
+          int l = strlen (argv[1]);
+          int nl = l == 0 || argv[1][l-1] != '\n';
+
+          if (fputs (argv[1], fp) == EOF || (nl && fputc ('\n', fp) == EOF))
+            OSS (fatal, reading_file, _("write: %s: %s"), fn, strerror (errno));
+        }
+      if (fclose (fp))
+        OSS (fatal, reading_file, _("close: %s: %s"), fn, strerror (errno));
+    }
+  else if (fn[0] == '<')
+    {
+      char *preo = o;
+      FILE *fp;
+
+      ++fn;
+      NEXT_TOKEN (fn);
+      if (fn[0] == '\0')
+        O (fatal, *expanding_var, _("file: missing filename"));
+
+      if (argv[1])
+        O (fatal, *expanding_var, _("file: too many arguments"));
+
+#ifdef KMK_FOPEN_NO_INHERIT_MODE
+      ENULLLOOP (fp, fopen (fn, "r" KMK_FOPEN_NO_INHERIT_MODE));
+#else
+      ENULLLOOP (fp, fopen (fn, "r"));
+#endif
+      if (fp == NULL)
+        {
+          if (errno == ENOENT)
+            return o;
+          OSS (fatal, reading_file, _("open: %s: %s"), fn, strerror (errno));
+        }
+
+      while (1)
+        {
+          char buf[1024];
+          size_t l = fread (buf, 1, sizeof (buf), fp);
+          if (l > 0)
+            o = variable_buffer_output (o, buf, l);
+
+          if (ferror (fp))
+            if (errno != EINTR)
+              OSS (fatal, reading_file, _("read: %s: %s"), fn, strerror (errno));
+          if (feof (fp))
+            break;
+        }
+      if (fclose (fp))
+        OSS (fatal, reading_file, _("close: %s: %s"), fn, strerror (errno));
+
+      /* Remove trailing newline.  */
+      if (o > preo && o[-1] == '\n')
+        if (--o > preo && o[-1] == '\r')
+          --o;
+    }
+  else
+    OS (fatal, *expanding_var, _("file: invalid file operation: %s"), fn);
+
+  return o;
+}
+
+static char *
+func_abspath (char *o, char **argv, const char *funcname UNUSED)
+{
+  /* Expand the argument.  */
+  const char *p = argv[0];
+  const char *path = 0;
+  int doneany = 0;
+  unsigned int len = 0;
+
+  while ((path = find_next_token (&p, &len)) != 0)
+    {
+      if (len < GET_PATH_MAX)
+        {
+          PATH_VAR (in);
+          PATH_VAR (out);
+
+          strncpy (in, path, len);
+          in[len] = '\0';
+
+          if (abspath (in, out))
+            {
+              o = variable_buffer_output (o, out, strlen (out));
+              o = variable_buffer_output (o, " ", 1);
+              doneany = 1;
+            }
+        }
+    }
+
+  /* Kill last space.  */
+  if (doneany)
+    --o;
+
+  return o;
+}
+
+#ifdef CONFIG_WITH_ABSPATHEX
+/* Same as abspath except that the current path may be given as the
+   2nd argument. */
+static char *
+func_abspathex (char *o, char **argv, const char *funcname UNUSED)
+{
+  char *cwd = argv[1];
+
+  /* cwd needs leading spaces chopped and may be optional,
+     in which case we're exactly like $(abspath ). */
+  if (cwd)
+    while (ISBLANK (*cwd))
+      cwd++;
+  if (!cwd || !*cwd)
+    o = func_abspath (o, argv, funcname);
+  else
+    {
+      /* Expand the argument.  */
+      const char *p = argv[0];
+      unsigned int cwd_len = ~0U;
+      char *path = 0;
+      int doneany = 0;
+      unsigned int len = 0;
+      PATH_VAR (in);
+      PATH_VAR (out);
+
+      while ((path = find_next_token (&p, &len)) != 0)
+        {
+          if (len < GET_PATH_MAX)
+            {
+#ifdef HAVE_DOS_PATHS
+              if (path[0] != '/' && path[0] != '\\' && (len < 2 || path[1] != ':') && cwd)
+#else
+              if (path[0] != '/' && cwd)
+#endif
+                {
+                  /* relative path, prefix with cwd. */
+                  if (cwd_len == ~0U)
+                    cwd_len = strlen (cwd);
+                  if (cwd_len + len + 1 >= GET_PATH_MAX)
+                      continue;
+                  memcpy (in, cwd, cwd_len);
+                  in[cwd_len] = '/';
+                  memcpy (in + cwd_len + 1, path, len);
+                  in[cwd_len + len + 1] = '\0';
+                }
+              else
+                {
+                  /* absolute path pass it as-is. */
+                  memcpy (in, path, len);
+                  in[len] = '\0';
+                }
+
+              if (abspath (in, out))
+                {
+                  o = variable_buffer_output (o, out, strlen (out));
+                  o = variable_buffer_output (o, " ", 1);
+                  doneany = 1;
+                }
+            }
+        }
+
+      /* Kill last space.  */
+      if (doneany)
+        --o;
+    }
+
+   return o;
+}
+#endif
+
+#ifdef CONFIG_WITH_XARGS
+/* Create one or more command lines avoiding the max argument
+   length restriction of the host OS.
+
+   The last argument is the list of arguments that the normal
+   xargs command would be fed from stdin.
+
+   The first argument is initial command and it's arguments.
+
+   If there are three or more arguments, the 2nd argument is
+   the command and arguments to be used on subsequent
+   command lines. Defaults to the initial command.
+
+   If there are four or more arguments, the 3rd argument is
+   the command to be used at the final command line. Defaults
+   to the sub sequent or initial command .
+
+   A future version of this function may define more arguments
+   and therefor anyone specifying six or more arguments will
+   cause fatal errors.
+
+   Typical usage is:
+        $(xargs ar cas mylib.a,$(objects))
+   or
+        $(xargs ar cas mylib.a,ar as mylib.a,$(objects))
+
+   It will then create one or more "ar mylib.a ..." command
+   lines with proper \n\t separation so it can be used when
+   writing rules. */
+static char *
+func_xargs (char *o, char **argv, const char *funcname UNUSED)
+{
+  int argc;
+  const char *initial_cmd;
+  size_t initial_cmd_len;
+  const char *subsequent_cmd;
+  size_t subsequent_cmd_len;
+  const char *final_cmd;
+  size_t final_cmd_len;
+  const char *args;
+  size_t max_args;
+  int i;
+
+#ifdef ARG_MAX
+  /* ARG_MAX is a bit unreliable (environment), so drop 25% of the max. */
+# define XARGS_MAX  (ARG_MAX - (ARG_MAX / 4))
+#else /* FIXME: update configure with a command line length test. */
+# define XARGS_MAX  10240
+#endif
+
+  argc = 0;
+  while (argv[argc])
+    argc++;
+  if (argc > 4)
+    O (fatal, NILF, _("Too many arguments for $(xargs)!\n"));
+
+  /* first: the initial / default command.*/
+  initial_cmd = argv[0];
+  while (ISSPACE (*initial_cmd))
+    initial_cmd++;
+  max_args = initial_cmd_len = strlen (initial_cmd);
+
+  /* second: the command for the subsequent command lines. defaults to the initial cmd. */
+  subsequent_cmd = argc > 2 && argv[1][0] != '\0' ? argv[1] : "\0";
+  while (ISSPACE (*subsequent_cmd))
+    subsequent_cmd++;   /* gcc 7.3.0 complains "offset ‘1’ outside bounds of constant string" if constant is "" rather than "\0". */
+  if (*subsequent_cmd)
+    {
+      subsequent_cmd_len = strlen (subsequent_cmd);
+      if (subsequent_cmd_len > max_args)
+        max_args = subsequent_cmd_len;
+    }
+  else
+    {
+      subsequent_cmd = initial_cmd;
+      subsequent_cmd_len = initial_cmd_len;
+    }
+
+  /* third: the final command. defaults to the subseq cmd. */
+  final_cmd = argc > 3 && argv[2][0] != '\0' ? argv[2] : "\0";
+  while (ISSPACE (*final_cmd))
+    final_cmd++;    /* gcc 7.3.0: same complaint as for subsequent_cmd++ */
+  if (*final_cmd)
+    {
+      final_cmd_len = strlen (final_cmd);
+      if (final_cmd_len > max_args)
+        max_args = final_cmd_len;
+    }
+  else
+    {
+      final_cmd = subsequent_cmd;
+      final_cmd_len = subsequent_cmd_len;
+    }
+
+  /* last: the arguments to split up into sensible portions. */
+  args = argv[argc - 1];
+
+  /* calc the max argument length. */
+  if (XARGS_MAX <= max_args + 2)
+    ONN (fatal, NILF, _("$(xargs): the commands are longer than the max exec argument length. (%lu <= %lu)\n"),
+         (unsigned long)XARGS_MAX, (unsigned long)max_args + 2);
+  max_args = XARGS_MAX - max_args - 1;
+
+  /* generate the commands. */
+  i = 0;
+  for (i = 0; ; i++)
+    {
+      unsigned int len;
+      const char *iterator = args;
+      const char *end = args;
+      const char *cur;
+      const char *tmp;
+
+      /* scan the arguments till we reach the end or the max length. */
+      while ((cur = find_next_token(&iterator, &len))
+          && (size_t)((cur + len) - args) < max_args)
+        end = cur + len;
+      if (cur && end == args)
+        O (fatal, NILF, _("$(xargs): command + one single arg is too much. giving up.\n"));
+
+      /* emit the command. */
+      if (i == 0)
+        {
+          o = variable_buffer_output (o, (char *)initial_cmd, initial_cmd_len);
+          o = variable_buffer_output (o, " ", 1);
+        }
+      else if (cur)
+        {
+          o = variable_buffer_output (o, "\n\t", 2);
+          o = variable_buffer_output (o, (char *)subsequent_cmd, subsequent_cmd_len);
+          o = variable_buffer_output (o, " ", 1);
+        }
+      else
+        {
+          o = variable_buffer_output (o, "\n\t", 2);
+          o = variable_buffer_output (o, (char *)final_cmd, final_cmd_len);
+          o = variable_buffer_output (o, " ", 1);
+        }
+
+      tmp = end;
+      while (tmp > args && ISSPACE (tmp[-1])) /* drop trailing spaces. */
+        tmp--;
+      o = variable_buffer_output (o, (char *)args, tmp - args);
+
+
+      /* next */
+      if (!cur)
+        break;
+      args = end;
+      while (ISSPACE (*args))
+        args++;
+    }
+
+  return o;
+}
+#endif
+
+#ifdef CONFIG_WITH_STRING_FUNCTIONS
+/*
+  $(length string)
+
+  XXX: This doesn't take multibyte locales into account.
+ */
+static char *
+func_length (char *o, char **argv, const char *funcname UNUSED)
+{
+  size_t len = strlen (argv[0]);
+  return math_int_to_variable_buffer (o, len);
+}
+
+/*
+  $(length-var var)
+
+  XXX: This doesn't take multibyte locales into account.
+ */
+static char *
+func_length_var (char *o, char **argv, const char *funcname UNUSED)
+{
+  struct variable *var = lookup_variable (argv[0], strlen (argv[0]));
+  return math_int_to_variable_buffer (o, var ? var->value_length : 0);
+}
+
+/* func_insert and func_substr helper. */
+static char *
+helper_pad (char *o, size_t to_add, const char *pad, size_t pad_len)
+{
+  while (to_add > 0)
+    {
+      size_t size = to_add > pad_len ? pad_len : to_add;
+      o = variable_buffer_output (o, pad, size);
+      to_add -= size;
+    }
+  return o;
+}
+
+/*
+  $(insert in, str[, n[, length[, pad]]])
+
+  XXX: This doesn't take multibyte locales into account.
+ */
+static char *
+func_insert (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char *in      = argv[0];
+  math_int    in_len  = (math_int)strlen (in);
+  const char *str     = argv[1];
+  math_int    str_len = (math_int)strlen (str);
+  math_int    n       = 0;
+  math_int    length  = str_len;
+  const char *pad     = "                ";
+  size_t      pad_len = 16;
+  size_t      i;
+
+  if (argv[2] != NULL)
+    {
+      n = math_int_from_string (argv[2]);
+      if (n > 0)
+        n--;            /* one-origin */
+      else if (n == 0)
+        n = str_len;    /* append */
+      else
+        { /* n < 0: from the end */
+          n = str_len + n;
+          if (n < 0)
+            n = 0;
+        }
+      if (n > 16*1024*1024) /* 16MB */
+        OS (fatal, NILF, _("$(insert ): n=%s is out of bounds\n"), argv[2]);
+
+      if (argv[3] != NULL)
+        {
+          length = math_int_from_string (argv[3]);
+          if (length < 0 || length > 16*1024*1024 /* 16MB */)
+              OS (fatal, NILF, _("$(insert ): length=%s is out of bounds\n"), argv[3]);
+
+          if (argv[4] != NULL)
+            {
+              const char *tmp = argv[4];
+              for (i = 0; tmp[i] == ' '; i++)
+                /* nothing */;
+              if (tmp[i] != '\0')
+                {
+                  pad = argv[4];
+                  pad_len = strlen (pad);
+                }
+              /* else: it was all default spaces. */
+            }
+        }
+    }
+
+  /* the head of the original string */
+  if (n > 0)
+    {
+      if (n <= str_len)
+        o = variable_buffer_output (o, str, n);
+      else
+        {
+          o = variable_buffer_output (o, str, str_len);
+          o = helper_pad (o, n - str_len, pad, pad_len);
+        }
+    }
+
+  /* insert the string */
+  if (length <= in_len)
+    o = variable_buffer_output (o, in, length);
+  else
+    {
+      o = variable_buffer_output (o, in, in_len);
+      o = helper_pad (o, length - in_len, pad, pad_len);
+    }
+
+  /* the tail of the original string */
+  if (n < str_len)
+    o = variable_buffer_output (o, str + n, str_len - n);
+
+  return o;
+}
+
+/*
+  $(pos needle, haystack[, start])
+  $(lastpos needle, haystack[, start])
+
+  XXX: This doesn't take multibyte locales into account.
+ */
+static char *
+func_pos (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char *needle       = *argv[0] ? argv[0] : " ";
+  size_t      needle_len   = strlen (needle);
+  const char *haystack     = argv[1];
+  size_t      haystack_len = strlen (haystack);
+  math_int    start        = 0;
+  const char *hit;
+
+  if (argv[2] != NULL)
+    {
+      start = math_int_from_string (argv[2]);
+      if (start > 0)
+        start--;            /* one-origin */
+      else if (start < 0)
+        start = haystack_len + start; /* from the end */
+      if (start < 0 || start + needle_len > haystack_len)
+        return math_int_to_variable_buffer (o, 0);
+    }
+  else if (funcname[0] == 'l')
+    start = haystack_len - 1;
+
+  /* do the searching */
+  if (funcname[0] != 'l')
+    { /* pos */
+      if (needle_len == 1)
+        hit = strchr (haystack + start, *needle);
+      else
+        hit = strstr (haystack + start, needle);
+    }
+  else
+    { /* last pos */
+      int    ch  = *needle;
+      size_t off = start + 1;
+
+      hit = NULL;
+      while (off-- > 0)
+        {
+          if (   haystack[off] == ch
+              && (   needle_len == 1
+                  || strncmp (&haystack[off], needle, needle_len) == 0))
+            {
+              hit = haystack + off;
+              break;
+            }
+        }
+    }
+
+  return math_int_to_variable_buffer (o, hit ? hit - haystack + 1 : 0);
+}
+
+/*
+  $(substr str, start[, length[, pad]])
+
+  XXX: This doesn't take multibyte locales into account.
+ */
+static char *
+func_substr (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char *str     = argv[0];
+  math_int    str_len = (math_int)strlen (str);
+  math_int    start   = math_int_from_string (argv[1]);
+  math_int    length  = 0;
+  const char *pad     = NULL;
+  size_t      pad_len = 0;
+
+  if (argv[2] != NULL)
+    {
+      if (argv[3] != NULL)
+        {
+          pad = argv[3];
+          for (pad_len = 0; pad[pad_len] == ' '; pad_len++)
+            /* nothing */;
+          if (pad[pad_len] != '\0')
+              pad_len = strlen (pad);
+          else
+            {
+              pad = "                ";
+              pad_len = 16;
+            }
+        }
+      length = math_int_from_string (argv[2]);
+      if (pad != NULL && length > 16*1024*1024 /* 16MB */)
+        OS (fatal, NILF, _("$(substr ): length=%s is out of bounds\n"), argv[2]);
+      if (pad != NULL && length < 0)
+        OS (fatal, NILF, _("$(substr ): negative length (%s) and padding doesn't mix.\n"), argv[2]);
+      if (length == 0)
+        return o;
+    }
+
+  /* Note that negative start and length are used for referencing from the
+     end of the string. */
+  if (pad == NULL)
+    {
+      if (start > 0)
+        start--;      /* one-origin */
+      else
+        {
+          start = str_len + start;
+          if (start <= 0)
+            {
+              if (length < 0)
+                return o;
+              start += length;
+              if (start <= 0)
+                return o;
+              length = start;
+              start = 0;
+            }
+        }
+
+      if (start >= str_len)
+        return o;
+      if (length == 0)
+        length = str_len - start;
+      else if (length < 0)
+        {
+          if (str_len <= -length)
+            return o;
+          length += str_len;
+          if (length <= start)
+            return o;
+          length -= start;
+        }
+      else if (start + length > str_len)
+        length = str_len - start;
+
+      o = variable_buffer_output (o, str + start, length);
+    }
+  else
+    {
+      if (start > 0)
+        {
+          start--;      /* one-origin */
+          if (start >= str_len)
+            return length ? helper_pad (o, length, pad, pad_len) : o;
+          if (length == 0)
+            length = str_len - start;
+        }
+      else
+        {
+          start = str_len + start;
+          if (start <= 0)
+            {
+              if (start + length <= 0)
+                return length ? helper_pad (o, length, pad, pad_len) : o;
+              o = helper_pad (o, -start, pad, pad_len);
+              return variable_buffer_output (o, str, length + start);
+            }
+          if (length == 0)
+            length = str_len - start;
+        }
+      if (start + length <= str_len)
+        o = variable_buffer_output (o, str + start, length);
+      else
+        {
+          o = variable_buffer_output (o, str + start, str_len - start);
+          o = helper_pad (o, start + length - str_len, pad, pad_len);
+        }
+    }
+
+  return o;
+}
+
+/*
+  $(translate string, from-set[, to-set[, pad-char]])
+
+  XXX: This doesn't take multibyte locales into account.
+ */
+static char *
+func_translate (char *o, char **argv, const char *funcname UNUSED)
+{
+  const unsigned char *str      = (const unsigned char *)argv[0];
+  const unsigned char *from_set = (const unsigned char *)argv[1];
+  const char          *to_set   = argv[2] != NULL ? argv[2] : "";
+  char                 trans_tab[1 << CHAR_BIT];
+  int                  i;
+  char                 ch;
+
+  /* init the array. */
+  for (i = 0; i < (1 << CHAR_BIT); i++)
+    trans_tab[i] = i;
+
+  while (   (i = *from_set) != '\0'
+         && (ch = *to_set) != '\0')
+    {
+      trans_tab[i] = ch;
+      from_set++;
+      to_set++;
+    }
+
+  if (i != '\0')
+    {
+      ch = '\0';                        /* no padding == remove char */
+      if (argv[2] != NULL && argv[3] != NULL)
+        {
+          ch = argv[3][0];
+          if (ch && argv[3][1])
+            OS (fatal, NILF, _("$(translate ): pad=`%s' expected a single char\n"), argv[3]);
+          if (ch == '\0')               /* no char == space */
+            ch = ' ';
+        }
+      while ((i = *from_set++) != '\0')
+        trans_tab[i] = ch;
+    }
+
+  /* do the translation */
+  while ((i = *str++) != '\0')
+    {
+      ch = trans_tab[i];
+      if (ch)
+        o = variable_buffer_output (o, &ch, 1);
+    }
+
+  return o;
+}
+#endif /* CONFIG_WITH_STRING_FUNCTIONS */
+
+#ifdef CONFIG_WITH_DEFINED
+/* Similar to ifdef. */
+static char *
+func_defined (char *o, char **argv, const char *funcname UNUSED)
+{
+  struct variable *v = lookup_variable (argv[0], strlen (argv[0]));
+  int result = v != NULL && *v->value != '\0';
+  o = variable_buffer_output (o,  result ? "1" : "", result);
+  return o;
+}
+#endif /* CONFIG_WITH_DEFINED*/
+
+#ifdef CONFIG_WITH_TOUPPER_TOLOWER
+static char *
+func_toupper_tolower (char *o, char **argv, const char *funcname)
+{
+  /* Expand the argument.  */
+  const char *p = argv[0];
+  while (*p)
+    {
+      /* convert to temporary buffer */
+      char tmp[256];
+      unsigned int i;
+      if (!strcmp(funcname, "toupper"))
+        for (i = 0; i < sizeof(tmp) && *p; i++, p++)
+          tmp[i] = toupper(*p);
+      else
+        for (i = 0; i < sizeof(tmp) && *p; i++, p++)
+          tmp[i] = tolower(*p);
+      o = variable_buffer_output (o, tmp, i);
+    }
+
+  return o;
+}
+#endif /* CONFIG_WITH_TOUPPER_TOLOWER */
+
+#if defined(CONFIG_WITH_VALUE_LENGTH) && defined(CONFIG_WITH_COMPARE)
+
+/* Strip leading spaces and other things off a command. */
+static const char *
+comp_cmds_strip_leading (const char *s, const char *e)
+{
+    while (s < e)
+      {
+        const char ch = *s;
+        if (!ISBLANK (ch)
+         && ch != '@'
+#ifdef CONFIG_WITH_COMMANDS_FUNC
+         && ch != '%'
+#endif
+         && ch != '+'
+         && ch != '-')
+          break;
+        s++;
+      }
+    return s;
+}
+
+/* Worker for func_comp_vars() which is called if the comparision failed.
+   It will do the slow command by command comparision of the commands
+   when there invoked as comp-cmds. */
+static char *
+comp_vars_ne (char *o, const char *s1, const char *e1, const char *s2, const char *e2,
+              char *ne_retval, const char *funcname)
+{
+    /* give up at once if not comp-cmds or comp-cmds-ex. */
+    if (strcmp (funcname, "comp-cmds") != 0
+     && strcmp (funcname, "comp-cmds-ex") != 0)
+      o = variable_buffer_output (o, ne_retval, strlen (ne_retval));
+    else
+      {
+        const char * const s1_start = s1;
+        int new_cmd = 1;
+        int diff;
+        for (;;)
+          {
+            /* if it's a new command, strip leading stuff. */
+            if (new_cmd)
+              {
+                s1 = comp_cmds_strip_leading (s1, e1);
+                s2 = comp_cmds_strip_leading (s2, e2);
+                new_cmd = 0;
+              }
+            if (s1 >= e1 || s2 >= e2)
+              break;
+
+            /*
+             * Inner compare loop which compares one line.
+             * FIXME: parse quoting!
+             */
+            for (;;)
+              {
+                const char ch1 = *s1;
+                const char ch2 = *s2;
+                diff = ch1 - ch2;
+                if (diff)
+                  break;
+                if (ch1 == '\n')
+                  break;
+                assert (ch1 != '\r');
+
+                /* next */
+                s1++;
+                s2++;
+                if (s1 >= e1 || s2 >= e2)
+                  break;
+              }
+
+            /*
+             * If we exited because of a difference try to end-of-command
+             * comparision, e.g. ignore trailing spaces.
+             */
+            if (diff)
+              {
+                /* strip */
+                while (s1 < e1 && ISBLANK (*s1))
+                  s1++;
+                while (s2 < e2 && ISBLANK (*s2))
+                  s2++;
+                if (s1 >= e1 || s2 >= e2)
+                  break;
+
+                /* compare again and check that it's a newline. */
+                if (*s2 != '\n' || *s1 != '\n')
+                  break;
+              }
+            /* Break out if we exited because of EOS. */
+            else if (s1 >= e1 || s2 >= e2)
+                break;
+
+            /*
+             * Detect the end of command lines.
+             */
+            if (*s1 == '\n')
+              new_cmd = s1 == s1_start || s1[-1] != '\\';
+            s1++;
+            s2++;
+          }
+
+        /*
+         * Ignore trailing empty lines.
+         */
+        if (s1 < e1 || s2 < e2)
+          {
+            while (s1 < e1 && (ISBLANK (*s1) || *s1 == '\n'))
+              if (*s1++ == '\n')
+                s1 = comp_cmds_strip_leading (s1, e1);
+            while (s2 < e2 && (ISBLANK (*s2) || *s2 == '\n'))
+              if (*s2++ == '\n')
+                s2 = comp_cmds_strip_leading (s2, e2);
+          }
+
+        /* emit the result. */
+        if (s1 == e1 && s2 == e2)
+          o = variable_buffer_output (o, "", 1) - 1; /** @todo check why this was necessary back the... */
+        else
+          o = variable_buffer_output (o, ne_retval, strlen (ne_retval));
+      }
+    return o;
+}
+
+/*
+    $(comp-vars var1,var2,not-equal-return)
+  or
+    $(comp-cmds cmd-var1,cmd-var2,not-equal-return)
+
+  Compares the two variables (that's given by name to avoid unnecessary
+  expanding) and return the string in the third argument if not equal.
+  If equal, nothing is returned.
+
+  comp-vars will to an exact comparision only stripping leading and
+  trailing spaces.
+
+  comp-cmds will compare command by command, ignoring not only leading
+  and trailing spaces on each line but also leading one leading '@',
+  '-', '+' and '%'
+*/
+static char *
+func_comp_vars (char *o, char **argv, const char *funcname)
+{
+  const char *s1, *e1, *x1, *s2, *e2, *x2;
+  char *a1 = NULL, *a2 = NULL;
+  size_t l, l1, l2;
+  struct variable *var1 = lookup_variable (argv[0], strlen (argv[0]));
+  struct variable *var2 = lookup_variable (argv[1], strlen (argv[1]));
+
+  /* the simple cases */
+  if (var1 == var2)
+    return variable_buffer_output (o, "", 0);       /* eq */
+  if (!var1 || !var2)
+    return variable_buffer_output (o, argv[2], strlen(argv[2]));
+  if (var1->value == var2->value)
+    return variable_buffer_output (o, "", 0);       /* eq */
+  if (   (!var1->recursive || IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR (var1))
+      && (!var2->recursive || IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR (var2)) )
+  {
+    if (    var1->value_length == var2->value_length
+        &&  !memcmp (var1->value, var2->value, var1->value_length))
+      return variable_buffer_output (o, "", 0);     /* eq */
+
+    /* ignore trailing and leading blanks */
+    s1 = var1->value;
+    e1 = s1 + var1->value_length;
+    while (ISBLANK (*s1))
+      s1++;
+    while (e1 > s1 && ISBLANK (e1[-1]))
+      e1--;
+
+    s2 = var2->value;
+    e2 = s2 + var2->value_length;
+    while (ISBLANK (*s2))
+      s2++;
+    while (e2 > s2 && ISBLANK (e2[-1]))
+      e2--;
+
+    if (e1 - s1 != e2 - s2)
+      return comp_vars_ne (o, s1, e1, s2, e2, argv[2], funcname);
+    if (!memcmp (s1, s2, e1 - s1))
+      return variable_buffer_output (o, "", 0);     /* eq */
+    return comp_vars_ne (o, s1, e1, s2, e2, argv[2], funcname);
+  }
+
+  /* ignore trailing and leading blanks */
+  s1 = var1->value;
+  e1 = s1 + var1->value_length;
+  while (ISBLANK (*s1))
+    s1++;
+  while (e1 > s1 && ISBLANK (e1[-1]))
+    e1--;
+
+  s2 = var2->value;
+  e2 = s2 + var2->value_length;
+  while (ISBLANK (*s2))
+    s2++;
+  while (e2 > s2 && ISBLANK (e2[-1]))
+    e2--;
+
+  /* both empty after stripping? */
+  if (s1 == e1 && s2 == e2)
+    return variable_buffer_output (o, "", 0);       /* eq */
+
+  /* optimist. */
+  if (   e1 - s1 == e2 - s2
+      && !memcmp(s1, s2, e1 - s1))
+    return variable_buffer_output (o, "", 0);       /* eq */
+
+  /* compare up to the first '$' or the end. */
+  x1 = var1->recursive ? memchr (s1, '$', e1 - s1) : NULL;
+  x2 = var2->recursive ? memchr (s2, '$', e2 - s2) : NULL;
+  if (!x1 && !x2)
+    return comp_vars_ne (o, s1, e1, s2, e2, argv[2], funcname);
+
+  l1 = x1 ? x1 - s1 : e1 - s1;
+  l2 = x2 ? x2 - s2 : e2 - s2;
+  l = l1 <= l2 ? l1 : l2;
+  if (l && memcmp (s1, s2, l))
+    return comp_vars_ne (o, s1, e1, s2, e2, argv[2], funcname);
+
+  /* one or both buffers now require expanding. */
+  if (!x1)
+    s1 += l;
+  else
+    {
+      s1 = a1 = allocated_variable_expand ((char *)s1 + l);
+      if (!l)
+        while (ISBLANK (*s1))
+          s1++;
+      e1 = strchr (s1, '\0');
+      while (e1 > s1 && ISBLANK (e1[-1]))
+        e1--;
+    }
+
+  if (!x2)
+    s2 += l;
+  else
+    {
+      s2 = a2 = allocated_variable_expand ((char *)s2 + l);
+      if (!l)
+        while (ISBLANK (*s2))
+          s2++;
+      e2 = strchr (s2, '\0');
+      while (e2 > s2 && ISBLANK (e2[-1]))
+        e2--;
+    }
+
+  /* the final compare */
+  if (   e1 - s1 != e2 - s2
+      || memcmp (s1, s2, e1 - s1))
+      o = comp_vars_ne (o, s1, e1, s2, e2, argv[2], funcname);
+  else
+      o = variable_buffer_output (o, "", 1) - 1;    /* eq */ /** @todo check why this was necessary back the... */
+  if (a1)
+    free (a1);
+  if (a2)
+    free (a2);
+  return o;
+}
+
+/*
+  $(comp-cmds-ex cmds1,cmds2,not-equal-return)
+
+  Compares the two strings and return the string in the third argument
+  if not equal. If equal, nothing is returned.
+
+  The comparision will be performed command by command, ignoring not
+  only leading and trailing spaces on each line but also leading one
+  leading '@', '-', '+' and '%'.
+*/
+static char *
+func_comp_cmds_ex (char *o, char **argv, const char *funcname)
+{
+  const char *s1, *e1, *s2, *e2;
+  size_t l1, l2;
+
+  /* the simple cases */
+  s1 = argv[0];
+  s2 = argv[1];
+  if (s1 == s2)
+    return variable_buffer_output (o, "", 0);       /* eq */
+  l1 = strlen (argv[0]);
+  l2 = strlen (argv[1]);
+
+  if (    l1 == l2
+      &&  !memcmp (s1, s2, l1))
+    return variable_buffer_output (o, "", 0);       /* eq */
+
+  /* ignore trailing and leading blanks */
+  e1 = s1 + l1;
+  s1 = comp_cmds_strip_leading (s1, e1);
+
+  e2 = s2 + l2;
+  s2 = comp_cmds_strip_leading (s2, e2);
+
+  if (e1 - s1 != e2 - s2)
+    return comp_vars_ne (o, s1, e1, s2, e2, argv[2], funcname);
+  if (!memcmp (s1, s2, e1 - s1))
+    return variable_buffer_output (o, "", 0);       /* eq */
+  return comp_vars_ne (o, s1, e1, s2, e2, argv[2], funcname);
+}
+#endif
+
+#ifdef CONFIG_WITH_DATE
+# if defined (_MSC_VER) /* FIXME: !defined (HAVE_STRPTIME) */
+char *strptime(const char *s, const char *format, struct tm *tm)
+{
+  return (char *)"strptime is not implemented";
+}
+# endif
+/* Check if the string is all blanks or not. */
+static int
+all_blanks (const char *s)
+{
+  if (!s)
+    return 1;
+  while (ISSPACE (*s))
+    s++;
+  return *s == '\0';
+}
+
+/* The first argument is the strftime format string, a iso
+   timestamp is the default if nothing is given.
+
+   The second argument is a time value if given. The format
+   is either the format from the first argument or given as
+   an additional third argument. */
+static char *
+func_date (char *o, char **argv, const char *funcname)
+{
+  char *p;
+  char *buf;
+  size_t buf_size;
+  struct tm t;
+  const char *format;
+
+  /* determin the format - use a single word as the default. */
+  format = !strcmp (funcname, "date-utc")
+         ? "%Y-%m-%dT%H:%M:%SZ"
+         : "%Y-%m-%dT%H:%M:%S";
+  if (!all_blanks (argv[0]))
+    format = argv[0];
+
+  /* get the time. */
+  memset (&t, 0, sizeof(t));
+  if (argv[0] && !all_blanks (argv[1]))
+    {
+      const char *input_format = !all_blanks (argv[2]) ? argv[2] : format;
+      p = strptime (argv[1], input_format, &t);
+      if (!p || *p != '\0')
+        {
+          OSSSS (error, NILF, _("$(%s): strptime(%s,%s,) -> %s\n"), funcname,
+                 argv[1], input_format, p ? p : "<null>");
+          return variable_buffer_output (o, "", 0);
+        }
+    }
+  else
+    {
+      time_t tval;
+      time (&tval);
+      if (!strcmp (funcname, "date-utc"))
+        t = *gmtime (&tval);
+      else
+        t = *localtime (&tval);
+    }
+
+  /* format it. note that zero isn't necessarily an error, so we'll
+     have to keep shut about failures. */
+  buf_size = 64;
+  buf = xmalloc (buf_size);
+  while (strftime (buf, buf_size, format, &t) == 0)
+    {
+      if (buf_size >= 4096)
+        {
+          *buf = '\0';
+          break;
+        }
+      buf = xrealloc (buf, buf_size <<= 1);
+    }
+  o = variable_buffer_output (o, buf, strlen (buf));
+  free (buf);
+  return o;
+}
+#endif
+
+#ifdef CONFIG_WITH_FILE_SIZE
+/* Prints the size of the specified file. Only one file is
+   permitted, notthing is stripped. -1 is returned if stat
+   fails. */
+static char *
+func_file_size (char *o, char **argv, const char *funcname UNUSED)
+{
+  struct stat st;
+  if (stat (argv[0], &st))
+    return variable_buffer_output (o, "-1", 2);
+  return math_int_to_variable_buffer (o, st.st_size);
+}
+#endif
+
+#ifdef CONFIG_WITH_WHICH
+/* Checks if the specified file exists an is executable.
+   On systems employing executable extensions, the name may
+   be modified to include the extension. */
+static int func_which_test_x (char *file)
+{
+  struct stat st;
+# if defined(WINDOWS32) || defined(__OS2__)
+  char *ext;
+  char *slash;
+
+  /* fix slashes first. */
+  slash = file;
+  while ((slash = strchr (slash, '\\')) != NULL)
+    *slash++ = '/';
+
+  /* straight */
+  if (stat (file, &st) == 0
+    && S_ISREG (st.st_mode))
+    return 1;
+
+  /* don't try add an extension if there already is one */
+  ext = strchr (file, '\0');
+  if (ext - file >= 4
+   && (   !stricmp (ext - 4, ".exe")
+       || !stricmp (ext - 4, ".cmd")
+       || !stricmp (ext - 4, ".bat")
+       || !stricmp (ext - 4, ".com")))
+    return 0;
+
+  /* try the extensions. */
+  strcpy (ext, ".exe");
+  if (stat (file, &st) == 0
+    && S_ISREG (st.st_mode))
+    return 1;
+
+  strcpy (ext, ".cmd");
+  if (stat (file, &st) == 0
+    && S_ISREG (st.st_mode))
+    return 1;
+
+  strcpy (ext, ".bat");
+  if (stat (file, &st) == 0
+    && S_ISREG (st.st_mode))
+    return 1;
+
+  strcpy (ext, ".com");
+  if (stat (file, &st) == 0
+    && S_ISREG (st.st_mode))
+    return 1;
+
+  return 0;
+
+# else
+
+  return access (file, X_OK) == 0
+     && stat (file, &st) == 0
+     && S_ISREG (st.st_mode);
+# endif
+}
+
+/* Searches for the specified programs in the PATH and print
+   their full location if found. Prints nothing if not found. */
+static char *
+func_which (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char *path;
+  struct variable *path_var;
+  unsigned i;
+  int first = 1;
+  PATH_VAR (buf);
+
+  path_var = lookup_variable ("PATH", 4);
+  if (path_var)
+    path = path_var->value;
+  else
+    path = ".";
+
+  /* iterate input */
+  for (i = 0; argv[i]; i++)
+    {
+      unsigned int len;
+      const char *iterator = argv[i];
+      char *cur;
+
+      while ((cur = find_next_token (&iterator, &len)))
+        {
+          /* if there is a separator, don't walk the path. */
+          if (memchr (cur, '/', len)
+#ifdef HAVE_DOS_PATHS
+           || memchr (cur, '\\', len)
+           || memchr (cur, ':', len)
+#endif
+             )
+            {
+              if (len + 1 + 4 < GET_PATH_MAX) /* +4 for .exe */
+                {
+                  memcpy (buf, cur, len);
+                  buf[len] = '\0';
+                  if (func_which_test_x (buf))
+                    o = variable_buffer_output (o, buf, strlen (buf));
+                }
+            }
+          else
+            {
+              const char *comp = path;
+              for (;;)
+                {
+                  const char *src = comp;
+                  const char *end = strchr (comp, PATH_SEPARATOR_CHAR);
+                  size_t src_len = end ? (size_t)(end - comp) : strlen (comp);
+                  if (!src_len)
+                    {
+                      src_len = 1;
+                      src = ".";
+                    }
+                  if (len + src_len + 2 + 4 < GET_PATH_MAX) /* +4 for .exe */
+                    {
+                      memcpy (buf, src, src_len);
+                      buf [src_len] = '/';
+                      memcpy (&buf[src_len + 1], cur, len);
+                      buf[src_len + 1 + len] = '\0';
+
+                      if (func_which_test_x (buf))
+                        {
+                          if (!first)
+                            o = variable_buffer_output (o, " ", 1);
+                          o = variable_buffer_output (o, buf, strlen (buf));
+                          first = 0;
+                          break;
+                        }
+                    }
+
+                  /* next */
+                  if (!end)
+                    break;
+                  comp = end + 1;
+                }
+            }
+        }
+    }
+
+  return variable_buffer_output (o, "", 0);
+}
+#endif /* CONFIG_WITH_WHICH */
+
+#ifdef CONFIG_WITH_IF_CONDITIONALS
+
+/* Evaluates the expression given in the argument using the
+   same evaluator as for the new 'if' statements, except now
+   we don't force the result into a boolean like for 'if' and
+   '$(if-expr ,,)'. */
+static char *
+func_expr (char *o, char **argv, const char *funcname UNUSED)
+{
+  o = expr_eval_to_string (o, argv[0]);
+  return o;
+}
+
+/* Same as '$(if ,,)' except the first argument is evaluated
+   using the same evaluator as for the new 'if' statements. */
+static char *
+func_if_expr (char *o, char **argv, const char *funcname UNUSED)
+{
+  int rc;
+  char *to_expand;
+
+  /* Evaluate the condition in argv[0] and expand the 2nd or
+     3rd (optional) argument according to the result. */
+  rc = expr_eval_if_conditionals (argv[0], NULL);
+  to_expand = rc == 0 ? argv[1] : argv[2];
+  if (to_expand && *to_expand)
+    variable_expand_string_2 (o, to_expand, -1, &o);
+
+  return o;
+}
+
+/*
+  $(select when1-cond, when1-body[,whenN-cond, whenN-body]).
+  */
+static char *
+func_select (char *o, char **argv, const char *funcname UNUSED)
+{
+  int i;
+
+  /* Test WHEN-CONDs until one matches. The check for 'otherwise[:]'
+     and 'default[:]' make this a bit more fun... */
+
+  for (i = 0; argv[i] != NULL; i += 2)
+    {
+      const char *cond = argv[i];
+      int is_otherwise = 0;
+
+      if (argv[i + 1] == NULL)
+        O (fatal, NILF, _("$(select ): not an even argument count\n"));
+
+      while (ISSPACE (*cond))
+        cond++;
+      if (   (*cond == 'o' && strncmp (cond, "otherwise", 9) == 0)
+          || (*cond == 'd' && strncmp (cond, "default",   7) == 0))
+        {
+          const char *end = cond + (*cond == 'o' ? 9 : 7);
+          while (ISSPACE (*end))
+            end++;
+          if (*end == ':')
+            do end++;
+            while (ISSPACE (*end));
+          is_otherwise = *end == '\0';
+        }
+
+      if (   is_otherwise
+          || expr_eval_if_conditionals (cond, NULL) == 0 /* true */)
+        {
+          variable_expand_string_2 (o, argv[i + 1], -1, &o);
+          break;
+        }
+    }
+
+  return o;
+}
+
+#endif /* CONFIG_WITH_IF_CONDITIONALS */
+
+#ifdef CONFIG_WITH_SET_CONDITIONALS
+static char *
+func_set_intersects (char *o, char **argv, const char *funcname UNUSED)
+{
+  const char *s1_cur;
+  unsigned int s1_len;
+  const char *s1_iterator = argv[0];
+
+  while ((s1_cur = find_next_token (&s1_iterator, &s1_len)) != 0)
+    {
+      const char *s2_cur;
+      unsigned int s2_len;
+      const char *s2_iterator = argv[1];
+      while ((s2_cur = find_next_token (&s2_iterator, &s2_len)) != 0)
+        if (s2_len == s1_len
+         && strneq (s2_cur, s1_cur, s1_len) )
+          return variable_buffer_output (o, "1", 1); /* found intersection */
+    }
+
+  return o; /* no intersection */
+}
+#endif /* CONFIG_WITH_SET_CONDITIONALS */
+
+#ifdef CONFIG_WITH_STACK
+
+/* Push an item (string without spaces). */
+static char *
+func_stack_push (char *o, char **argv, const char *funcname UNUSED)
+{
+  do_variable_definition(NILF, argv[0], argv[1], o_file, f_append, 0 /* !target_var */);
+  return o;
+}
+
+/* Pops an item off the stack / get the top stack element.
+   (This is what's tricky to do in pure GNU make syntax.) */
+static char *
+func_stack_pop_top (char *o, char **argv, const char *funcname)
+{
+  struct variable *stack_var;
+  const char *stack = argv[0];
+
+  stack_var = lookup_variable (stack, strlen (stack) );
+  if (stack_var)
+    {
+      unsigned int len;
+      const char *iterator = stack_var->value;
+      char *lastitem = NULL;
+      char *cur;
+
+      while ((cur = find_next_token (&iterator, &len)))
+        lastitem = cur;
+
+      if (lastitem != NULL)
+        {
+          if (strcmp (funcname, "stack-popv") != 0)
+            o = variable_buffer_output (o, lastitem, len);
+          if (strcmp (funcname, "stack-top") != 0)
+            {
+              *lastitem = '\0';
+              while (lastitem > stack_var->value && ISSPACE (lastitem[-1]))
+                *--lastitem = '\0';
+#ifdef CONFIG_WITH_VALUE_LENGTH
+              stack_var->value_length = lastitem - stack_var->value;
+#endif
+              VARIABLE_CHANGED (stack_var);
+            }
+        }
+    }
+  return o;
+}
+#endif /* CONFIG_WITH_STACK */
+
+#if defined (CONFIG_WITH_MATH) || defined (CONFIG_WITH_NANOTS) || defined (CONFIG_WITH_FILE_SIZE)
+/* outputs the number (as a string) into the variable buffer. */
+static char *
+math_int_to_variable_buffer (char *o, math_int num)
+{
+  static const char xdigits[17] = "0123456789abcdef";
+  int negative;
+  char strbuf[24]; /* 16 hex + 2 prefix + sign + term => 20
+                              or 20 dec + sign + term => 22 */
+  char *str = &strbuf[sizeof (strbuf) - 1];
+
+  negative = num < 0;
+  if (negative)
+    num = -num;
+
+  *str = '\0';
+
+  do
+    {
+#ifdef HEX_MATH_NUMBERS
+      *--str = xdigits[num & 0xf];
+      num >>= 4;
+#else
+      *--str = xdigits[num % 10];
+      num /= 10;
+#endif
+    }
+  while (num);
+
+#ifdef HEX_MATH_NUMBERS
+  *--str = 'x';
+  *--str = '0';
+#endif
+
+  if (negative)
+    *--str = '-';
+
+  return variable_buffer_output (o, str, &strbuf[sizeof (strbuf) - 1] - str);
+}
+#endif /* CONFIG_WITH_MATH || CONFIG_WITH_NANOTS */
+
+#ifdef CONFIG_WITH_MATH
+
+/* Converts a string to an integer, causes an error if the format is invalid. */
+static math_int
+math_int_from_string (const char *str)
+{
+  const char *start;
+  unsigned base = 0;
+  int      negative = 0;
+  math_int num = 0;
+
+  /* strip spaces */
+  while (ISSPACE (*str))
+    str++;
+  if (!*str)
+    {
+      O (error, NILF, _("bad number: empty\n"));
+      return 0;
+    }
+  start = str;
+
+  /* check for +/- */
+  while (*str == '+' || *str == '-' || ISSPACE (*str))
+      if (*str++ == '-')
+        negative = !negative;
+
+  /* check for prefix - we do not accept octal numbers, sorry. */
+  if (*str == '0' && (str[1] == 'x' || str[1] == 'X'))
+    {
+      base = 16;
+      str += 2;
+    }
+  else
+    {
+      /* look for a hex digit, if not found treat it as decimal */
+      const char *p2 = str;
+      for ( ; *p2; p2++)
+        if (isxdigit (*p2) && !isdigit (*p2) && isascii (*p2) )
+          {
+            base = 16;
+            break;
+          }
+      if (base == 0)
+        base = 10;
+    }
+
+  /* must have at least one digit! */
+  if (    !isascii (*str)
+      ||  !(base == 16 ? isxdigit (*str) : isdigit (*str)) )
+    {
+      OS (error, NILF, _("bad number: '%s'\n"), start);
+      return 0;
+    }
+
+  /* convert it! */
+  while (*str && !ISSPACE (*str))
+    {
+      int ch = *str++;
+      if (ch >= '0' && ch <= '9')
+        ch -= '0';
+      else if (base == 16 && ch >= 'a' && ch <= 'f')
+        ch -= 'a' - 10;
+      else if (base == 16 && ch >= 'A' && ch <= 'F')
+        ch -= 'A' - 10;
+      else
+        {
+          OSNN (error, NILF, _("bad number: '%s' (base=%u, pos=%lu)\n"), start, base, (unsigned long)(str - start));
+          return 0;
+        }
+      num *= base;
+      num += ch;
+    }
+
+  /* check trailing spaces. */
+  while (ISSPACE (*str))
+    str++;
+  if (*str)
+    {
+      OS (error, NILF, _("bad number: '%s'\n"), start);
+      return 0;
+    }
+
+  return negative ? -num : num;
+}
+
+/* Add two or more integer numbers. */
+static char *
+func_int_add (char *o, char **argv, const char *funcname UNUSED)
+{
+  math_int num;
+  int i;
+
+  num = math_int_from_string (argv[0]);
+  for (i = 1; argv[i]; i++)
+    num += math_int_from_string (argv[i]);
+
+  return math_int_to_variable_buffer (o, num);
+}
+
+/* Subtract two or more integer numbers. */
+static char *
+func_int_sub (char *o, char **argv, const char *funcname UNUSED)
+{
+  math_int num;
+  int i;
+
+  num = math_int_from_string (argv[0]);
+  for (i = 1; argv[i]; i++)
+    num -= math_int_from_string (argv[i]);
+
+  return math_int_to_variable_buffer (o, num);
+}
+
+/* Multiply two or more integer numbers. */
+static char *
+func_int_mul (char *o, char **argv, const char *funcname UNUSED)
+{
+  math_int num;
+  int i;
+
+  num = math_int_from_string (argv[0]);
+  for (i = 1; argv[i]; i++)
+    num *= math_int_from_string (argv[i]);
+
+  return math_int_to_variable_buffer (o, num);
+}
+
+/* Divide an integer number by one or more divisors. */
+static char *
+func_int_div (char *o, char **argv, const char *funcname UNUSED)
+{
+  math_int num;
+  math_int divisor;
+  int i;
+
+  num = math_int_from_string (argv[0]);
+  for (i = 1; argv[i]; i++)
+    {
+      divisor = math_int_from_string (argv[i]);
+      if (!divisor)
+        {
+          OS (error, NILF, _("divide by zero ('%s')\n"), argv[i]);
+          return math_int_to_variable_buffer (o, 0);
+        }
+      num /= divisor;
+    }
+
+  return math_int_to_variable_buffer (o, num);
+}
+
+
+/* Divide and return the remainder. */
+static char *
+func_int_mod (char *o, char **argv, const char *funcname UNUSED)
+{
+  math_int num;
+  math_int divisor;
+
+  num = math_int_from_string (argv[0]);
+  divisor = math_int_from_string (argv[1]);
+  if (!divisor)
+    {
+      OS (error, NILF, _("divide by zero ('%s')\n"), argv[1]);
+      return math_int_to_variable_buffer (o, 0);
+    }
+  num %= divisor;
+
+  return math_int_to_variable_buffer (o, num);
+}
+
+/* 2-complement. */
+static char *
+func_int_not (char *o, char **argv, const char *funcname UNUSED)
+{
+  math_int num;
+
+  num = math_int_from_string (argv[0]);
+  num = ~num;
+
+  return math_int_to_variable_buffer (o, num);
+}
+
+/* Bitwise AND (two or more numbers). */
+static char *
+func_int_and (char *o, char **argv, const char *funcname UNUSED)
+{
+  math_int num;
+  int i;
+
+  num = math_int_from_string (argv[0]);
+  for (i = 1; argv[i]; i++)
+    num &= math_int_from_string (argv[i]);
+
+  return math_int_to_variable_buffer (o, num);
+}
+
+/* Bitwise OR (two or more numbers). */
+static char *
+func_int_or (char *o, char **argv, const char *funcname UNUSED)
+{
+  math_int num;
+  int i;
+
+  num = math_int_from_string (argv[0]);
+  for (i = 1; argv[i]; i++)
+    num |= math_int_from_string (argv[i]);
+
+  return math_int_to_variable_buffer (o, num);
+}
+
+/* Bitwise XOR (two or more numbers). */
+static char *
+func_int_xor (char *o, char **argv, const char *funcname UNUSED)
+{
+  math_int num;
+  int i;
+
+  num = math_int_from_string (argv[0]);
+  for (i = 1; argv[i]; i++)
+    num ^= math_int_from_string (argv[i]);
+
+  return math_int_to_variable_buffer (o, num);
+}
+
+/* Compare two integer numbers. Returns make boolean (true="1"; false=""). */
+static char *
+func_int_cmp (char *o, char **argv, const char *funcname)
+{
+    math_int num1;
+    math_int num2;
+    int rc;
+
+    num1 = math_int_from_string (argv[0]);
+    num2 = math_int_from_string (argv[1]);
+
+    funcname += sizeof ("int-") - 1;
+    if (!strcmp (funcname, "eq"))
+      rc = num1 == num2;
+    else if (!strcmp (funcname, "ne"))
+      rc = num1 != num2;
+    else if (!strcmp (funcname, "gt"))
+      rc = num1 > num2;
+    else if (!strcmp (funcname, "ge"))
+      rc = num1 >= num2;
+    else if (!strcmp (funcname, "lt"))
+      rc = num1 < num2;
+    else /*if (!strcmp (funcname, "le"))*/
+      rc = num1 <= num2;
+
+    return variable_buffer_output (o, rc ? "1" : "", rc);
+}
+
+#endif /* CONFIG_WITH_MATH */
+
+#ifdef CONFIG_WITH_NANOTS
+/* Returns the current timestamp as nano seconds. The time
+   source is a high res monotone one if the platform provides
+   this (and we know about it).
+
+   Tip. Use this with int-sub to profile makefile reading
+        and similar. */
+static char *
+func_nanots (char *o, char **argv UNUSED, const char *funcname UNUSED)
+{
+  return math_int_to_variable_buffer (o, nano_timestamp ());
+}
+#endif
+
+#ifdef CONFIG_WITH_OS2_LIBPATH
+/* Sets or gets the OS/2 libpath variables.
+
+   The first argument indicates which variable - BEGINLIBPATH,
+   ENDLIBPATH, LIBPATHSTRICT or LIBPATH.
+
+   The second indicates whether this is a get (not present) or
+   set (present) operation. When present it is the new value for
+   the variable. */
+static char *
+func_os2_libpath (char *o, char **argv, const char *funcname UNUSED)
+{
+  char buf[4096];
+  ULONG fVar;
+  APIRET rc;
+
+  /* translate variable name (first arg) */
+  if (!strcmp (argv[0], "BEGINLIBPATH"))
+    fVar = BEGIN_LIBPATH;
+  else if (!strcmp (argv[0], "ENDLIBPATH"))
+    fVar = END_LIBPATH;
+  else if (!strcmp (argv[0], "LIBPATHSTRICT"))
+    fVar = LIBPATHSTRICT;
+  else if (!strcmp (argv[0], "LIBPATH"))
+    fVar = 0;
+  else
+    {
+      OS (error, NILF, _("$(libpath): unknown variable `%s'"), argv[0]);
+      return variable_buffer_output (o, "", 0);
+    }
+
+  if (!argv[1])
+    {
+      /* get the variable value. */
+      if (fVar != 0)
+        {
+          buf[0] = buf[1] = buf[2] = buf[3] = '\0';
+          rc = DosQueryExtLIBPATH (buf, fVar);
+        }
+      else
+        rc = DosQueryHeaderInfo (NULLHANDLE, 0, buf, sizeof(buf), QHINF_LIBPATH);
+      if (rc != NO_ERROR)
+        {
+          OSN (error, NILF, _("$(libpath): failed to query `%s', rc=%d"), argv[0], rc);
+          return variable_buffer_output (o, "", 0);
+        }
+      o = variable_buffer_output (o, buf, strlen (buf));
+    }
+  else
+    {
+      /* set the variable value. */
+      size_t len;
+      size_t len_max = sizeof (buf) < 2048 ? sizeof (buf) : 2048;
+      const char *val;
+      const char *end;
+
+      if (fVar == 0)
+        {
+          O (error, NILF, _("$(libpath): LIBPATH is read-only"));
+          return variable_buffer_output (o, "", 0);
+        }
+
+      /* strip leading and trailing spaces and check for max length. */
+      val = argv[1];
+      while (ISSPACE (*val))
+        val++;
+      end = strchr (val, '\0');
+      while (end > val && ISSPACE (end[-1]))
+        end--;
+
+      len = end - val;
+      if (len >= len_max)
+        {
+          OSNN (error,  NILF, _("$(libpath): The new `%s' value is too long (%d bytes, max %d)"),
+                argv[0], len, len_max);
+          return variable_buffer_output (o, "", 0);
+        }
+
+      /* make a stripped copy in low memory and try set it. */
+      memcpy (buf, val, len);
+      buf[len] = '\0';
+      rc = DosSetExtLIBPATH (buf, fVar);
+      if (rc != NO_ERROR)
+        {
+          OSSN (error, NILF, _("$(libpath): failed to set `%s' to `%s', rc=%d"), argv[0], buf, rc);
+          return variable_buffer_output (o, "", 0);
+        }
+
+      o = variable_buffer_output (o, "", 0);
+    }
+  return o;
+}
+#endif  /* CONFIG_WITH_OS2_LIBPATH */
+
+#if defined (CONFIG_WITH_MAKE_STATS) || defined (CONFIG_WITH_MINIMAL_STATS)
+/* Retrieve make statistics. */
+static char *
+func_make_stats (char *o, char **argv, const char *funcname UNUSED)
+{
+  char buf[512];
+  int len;
+
+  if (!argv[0] || (!argv[0][0] && !argv[1]))
+    {
+# ifdef CONFIG_WITH_MAKE_STATS
+      len = sprintf (buf, "alloc-cur: %5ld/%3ld %3luMB  hash: %5lu %2lu%%",
+                     make_stats_allocations,
+                     make_stats_reallocations,
+                     make_stats_allocated / (1024*1024),
+                     make_stats_ht_lookups,
+                     (make_stats_ht_collisions * 100) / make_stats_ht_lookups);
+      o = variable_buffer_output (o, buf, len);
+#endif
+    }
+  else
+    {
+      /* selective */
+      int i;
+      for (i = 0; argv[i]; i++)
+        {
+          unsigned long val;
+          if (i != 0)
+            o = variable_buffer_output (o, " ", 1);
+          if (0)
+              continue;
+# ifdef CONFIG_WITH_MAKE_STATS
+          else if (!strcmp(argv[i], "allocations"))
+            val = make_stats_allocations;
+          else if (!strcmp(argv[i], "reallocations"))
+            val = make_stats_reallocations;
+          else if (!strcmp(argv[i], "allocated"))
+            val = make_stats_allocated;
+          else if (!strcmp(argv[i], "ht_lookups"))
+            val = make_stats_ht_lookups;
+          else if (!strcmp(argv[i], "ht_collisions"))
+            val = make_stats_ht_collisions;
+          else if (!strcmp(argv[i], "ht_collisions_pct"))
+            val = (make_stats_ht_collisions * 100) / make_stats_ht_lookups;
+#endif
+          else
+            {
+              o = variable_buffer_output (o, argv[i], strlen (argv[i]));
+              continue;
+            }
+
+          len = sprintf (buf, "%ld", val);
+          o = variable_buffer_output (o, buf, len);
+        }
+    }
+
+  return o;
+}
+#endif  /* CONFIG_WITH_MAKE_STATS */
+
+#ifdef CONFIG_WITH_COMMANDS_FUNC
+/* Gets all the commands for a target, separated by newlines.
+
+   This is useful when creating and checking target dependencies since
+   it reduces the amount of work and the memory consuption. A new prefix
+   character '%' has been introduced for skipping certain lines, like
+   for instance the one calling this function and pushing to a dep file.
+   Blank lines are also skipped.
+
+   The commands function takes exactly one argument, which is the name of
+   the target which commands should be returned.
+
+   The commands-sc is identical to commands except that it uses a ';' to
+   separate the commands.
+
+   The commands-usr is similar to commands except that it takes a 2nd
+   argument that is used to separate the commands. */
+char *
+func_commands (char *o, char **argv, const char *funcname)
+{
+  struct file *file;
+  static int recursive = 0;
+
+  if (recursive)
+    {
+      OS (error, reading_file, _("$(%s ) was invoked recursivly"), funcname);
+      return variable_buffer_output (o, "recursive", sizeof ("recursive") - 1);
+    }
+  if (*argv[0] == '\0')
+    {
+      OS (error, reading_file, _("$(%s ) was invoked with an empty target name"), funcname);
+      return o;
+    }
+  recursive = 1;
+
+  file = lookup_file (argv[0]);
+  if (file && file->cmds)
+    {
+      unsigned int i;
+      int cmd_sep_len;
+      struct commands *cmds = file->cmds;
+      const char *cmd_sep;
+
+      if (!strcmp (funcname, "commands"))
+        {
+          cmd_sep = "\n";
+          cmd_sep_len = 1;
+        }
+      else if (!strcmp (funcname, "commands-sc"))
+        {
+          cmd_sep = ";";
+          cmd_sep_len = 1;
+        }
+      else /*if (!strcmp (funcname, "commands-usr"))*/
+        {
+          cmd_sep = argv[1];
+          cmd_sep_len = strlen (cmd_sep);
+        }
+
+      initialize_file_variables (file, 1 /* don't search for pattern vars */);
+      set_file_variables (file, 1 /* early call */);
+      chop_commands (cmds);
+
+      for (i = 0; i < cmds->ncommand_lines; i++)
+        {
+          char *p;
+          char *in, *out, *ref;
+
+          /* Skip it if it has a '%' prefix or is blank. */
+          if (cmds->lines_flags[i] & COMMAND_GETTER_SKIP_IT)
+            continue;
+          p = cmds->command_lines[i];
+          while (ISBLANK (*p))
+            p++;
+          if (*p == '\0')
+            continue;
+
+          /* --- copied from new_job() in job.c --- */
+
+          /* Collapse backslash-newline combinations that are inside variable
+             or function references.  These are left alone by the parser so
+             that they will appear in the echoing of commands (where they look
+             nice); and collapsed by construct_command_argv when it tokenizes.
+             But letting them survive inside function invocations loses because
+             we don't want the functions to see them as part of the text.  */
+
+          /* IN points to where in the line we are scanning.
+             OUT points to where in the line we are writing.
+             When we collapse a backslash-newline combination,
+             IN gets ahead of OUT.  */
+
+          in = out = p;
+          while ((ref = strchr (in, '$')) != 0)
+            {
+              ++ref;		/* Move past the $.  */
+
+              if (out != in)
+                /* Copy the text between the end of the last chunk
+                   we processed (where IN points) and the new chunk
+                   we are about to process (where REF points).  */
+                memmove (out, in, ref - in);
+
+              /* Move both pointers past the boring stuff.  */
+              out += ref - in;
+              in = ref;
+
+              if (*ref == '(' || *ref == '{')
+                {
+                  char openparen = *ref;
+                  char closeparen = openparen == '(' ? ')' : '}';
+                  int count;
+                  char *p2;
+
+                  *out++ = *in++;	/* Copy OPENPAREN.  */
+                  /* IN now points past the opening paren or brace.
+                     Count parens or braces until it is matched.  */
+                  count = 0;
+                  while (*in != '\0')
+                    {
+                      if (*in == closeparen && --count < 0)
+                        break;
+                      else if (*in == '\\' && in[1] == '\n')
+                        {
+                          /* We have found a backslash-newline inside a
+                             variable or function reference.  Eat it and
+                             any following whitespace.  */
+
+                          int quoted = 0;
+                          for (p2 = in - 1; p2 > ref && *p2 == '\\'; --p2)
+                            quoted = !quoted;
+
+                          if (quoted)
+                            /* There were two or more backslashes, so this is
+                               not really a continuation line.  We don't collapse
+                               the quoting backslashes here as is done in
+                               collapse_continuations, because the line will
+                               be collapsed again after expansion.  */
+                            *out++ = *in++;
+                          else
+                            {
+                              /* Skip the backslash, newline and
+                                 any following whitespace.  */
+                              in = next_token (in + 2);
+
+                              /* Discard any preceding whitespace that has
+                                 already been written to the output.  */
+                              while (out > ref
+                                     && ISBLANK (out[-1]))
+                                --out;
+
+                              /* Replace it all with a single space.  */
+                              *out++ = ' ';
+                            }
+                        }
+                      else
+                        {
+                          if (*in == openparen)
+                            ++count;
+
+                          *out++ = *in++;
+                        }
+                    }
+                }
+              /* Some of these can be amended ($< perhaps), but we're likely to be called while the
+                 dep expansion happens, so it would have to be on a hackish basis. sad... */
+              else if (*ref == '<' || *ref == '*' || *ref == '%' || *ref == '^' || *ref == '+')
+                OSN (error, reading_file, _("$(%s ) does not work reliably with $%c in all cases"), funcname, *ref);
+            }
+
+          /* There are no more references in this line to worry about.
+             Copy the remaining uninteresting text to the output.  */
+          if (out != in)
+            strcpy (out, in);
+
+          /* --- copied from new_job() in job.c --- */
+
+          /* Finally, expand the line.  */
+          if (i)
+            o = variable_buffer_output (o, cmd_sep, cmd_sep_len);
+          o = variable_expand_for_file_2 (o, cmds->command_lines[i], ~0U, file, NULL);
+
+          /* Skip it if it has a '%' prefix or is blank. */
+          p = o;
+          while (ISBLANK (*o)
+              || *o == '@'
+              || *o == '-'
+              || *o == '+')
+            o++;
+          if (*o != '\0' && *o != '%')
+            o = strchr (o, '\0');
+          else if (i)
+            o = p - cmd_sep_len;
+          else
+            o = p;
+        } /* for each command line */
+    }
+  /* else FIXME: bitch about it? */
+
+  recursive = 0;
+  return o;
+}
+#endif  /* CONFIG_WITH_COMMANDS_FUNC */
+#ifdef KMK
+
+/* Useful when debugging kmk and/or makefiles. */
+char *
+func_breakpoint (char *o, char **argv UNUSED, const char *funcname UNUSED)
+{
+#ifdef _MSC_VER
+  __debugbreak();
+#elif defined(__i386__) || defined(__x86__) || defined(__X86__) || defined(_M_IX86) || defined(__i386) \
+   || defined(__amd64__) || defined(__x86_64__) || defined(__AMD64__) || defined(_M_X64) || defined(__amd64)
+# ifdef __sun__
+  __asm__ __volatile__ ("int $3\n\t");
+# else
+  __asm__ __volatile__ ("int3\n\t");
+# endif
+#else
+  char *p = (char *)0;
+  *p = '\0';
+#endif
+  return o;
+}
+
+/* umask | umask -S. */
+char *
+func_get_umask (char *o, char **argv UNUSED, const char *funcname UNUSED)
+{
+  char sz[80];
+  int off;
+  mode_t u;
+  int symbolic = 0;
+  const char *psz = argv[0];
+
+  if (psz)
+    {
+      const char *pszEnd = strchr (psz, '\0');
+      strip_whitespace (&psz, &pszEnd);
+
+      if (pszEnd != psz)
+        {
+          if (   STR_N_EQUALS (psz, pszEnd - pszEnd, "S")
+              || STR_N_EQUALS (psz, pszEnd - pszEnd, "-S")
+              || STR_N_EQUALS (psz, pszEnd - pszEnd, "symbolic") )
+            symbolic = 1;
+          else
+            OSS (error, reading_file, _("$(%s ) invalid argument `%s'"),
+                 funcname, argv[0]);
+        }
+    }
+
+  u = g_fUMask;
+  assert (u == umask (g_fUMask));
+
+  if (symbolic)
+    {
+      off = 0;
+      sz[off++] = 'u';
+      sz[off++] = '=';
+      if ((u & S_IRUSR) == 0)
+        sz[off++] = 'r';
+      if ((u & S_IWUSR) == 0)
+        sz[off++] = 'w';
+      if ((u & S_IXUSR) == 0)
+        sz[off++] = 'x';
+      sz[off++] = ',';
+      sz[off++] = 'g';
+      sz[off++] = '=';
+      if ((u & S_IRGRP) == 0)
+        sz[off++] = 'r';
+      if ((u & S_IWGRP) == 0)
+        sz[off++] = 'w';
+      if ((u & S_IXGRP) == 0)
+        sz[off++] = 'x';
+      sz[off++] = ',';
+      sz[off++] = 'o';
+      sz[off++] = '=';
+      if ((u & S_IROTH) == 0)
+        sz[off++] = 'r';
+      if ((u & S_IWOTH) == 0)
+        sz[off++] = 'w';
+      if ((u & S_IXOTH) == 0)
+        sz[off++] = 'x';
+    }
+  else
+    off = sprintf (sz, "%.4o", u);
+
+  return variable_buffer_output (o, sz, off);
+}
+
+
+/* umask 0002 | umask u=rwx,g=rwx,o=rx. */
+char *
+func_set_umask (char *o, char **argv UNUSED, const char *funcname UNUSED)
+{
+  mode_t u;
+  const char *psz;
+
+  /* Figure what kind of input this is. */
+  psz = argv[0];
+  while (ISBLANK (*psz))
+    psz++;
+
+  if (isdigit ((unsigned char)*psz))
+   {
+      u = 0;
+      while (*psz)
+        {
+          u <<= 3;
+          if (*psz < '0' || *psz >= '8')
+            {
+              OSS (error, reading_file, _("$(%s ) illegal number `%s'"), funcname, argv[0]);
+              break;
+            }
+          u += *psz - '0';
+          psz++;
+        }
+
+      if (argv[1] != NULL)
+          OS (error, reading_file, _("$(%s ) too many arguments for octal mode"), funcname);
+
+      umask (u);
+      g_fUMask = umask (u); /* Must get it again as windows modifies it. */
+  }
+  else
+  {
+      OS (error, reading_file, _("$(%s ) symbol mode is not implemented"), funcname);
+  }
+
+  return o;
+}
+
+
+/* Controls the cache in dir-bird-nt.c. */
+
+char *
+func_dircache_ctl (char *o, char **argv UNUSED, const char *funcname UNUSED)
+{
+# ifdef KBUILD_OS_WINDOWS
+  const char *cmd = argv[0];
+  while (ISBLANK (*cmd))
+    cmd++;
+  if (strcmp (cmd, "invalidate") == 0)
+    {
+      if (argv[1] != NULL)
+        O (error, reading_file, "$(dircache-ctl invalidate) takes no parameters");
+      dir_cache_invalid_all ();
+    }
+  else if (strcmp (cmd, "invalidate-and-close-dirs") == 0)
+    {
+      if (argv[1] != NULL)
+        O (error, reading_file, "$(dircache-ctl invalidate) takes no parameters");
+      dir_cache_invalid_all_and_close_dirs (0 /*including_root*/);
+    }
+  else if (strcmp (cmd, "invalidate-missing") == 0)
+    {
+      if (argv[1] != NULL)
+        O (error, reading_file, "$(dircache-ctl invalidate-missing) takes no parameters");
+      dir_cache_invalid_missing ();
+    }
+  else if (strcmp (cmd, "volatile") == 0)
+    {
+      size_t i;
+      for (i = 1; argv[i] != NULL; i++)
+        {
+          const char *dir = argv[i];
+          while (ISBLANK (*dir))
+            dir++;
+          if (*dir)
+            dir_cache_volatile_dir (dir);
+        }
+    }
+  else if (strcmp (cmd, "deleted") == 0)
+    {
+      size_t i;
+      for (i = 1; argv[i] != NULL; i++)
+        {
+          const char *dir = argv[i];
+          while (ISBLANK (*dir))
+            dir++;
+          if (*dir)
+            dir_cache_deleted_directory (dir);
+        }
+    }
+  else
+    OS (error, reading_file, "Unknown $(dircache-ctl ) command: '%s'", cmd);
+# endif
+  return o;
+}
+
+#endif /* KMK */
+#if defined (KMK) || defined (CONFIG_WITH_LAZY_DEPS_VARS)
+
+/* Helper for performer GNU make style quoting of one filename. */
+
+static char *
+helper_quote_make (char *o, const char *name, size_t len, int is_dep,
+                   int is_tgt, int quote_trailing_slashes,
+                   const char *funcname)
+{
+  unsigned const map_flags = MAP_BLANK
+                           | MAP_NEWLINE
+                           | MAP_COMMENT
+                           | MAP_VARIABLE
+                           | MAP_SEMI
+                           | MAP_EQUALS
+                           | (is_dep ? MAP_PIPE :
+                              is_tgt ? MAP_COLON : 0);
+  const char *cur = name;
+  assert (memchr (name, '\0', len) == NULL);
+  if (len > 0)
+    {
+      const char * const end = &name[len];
+      unsigned long len_out = 0;
+      const char *prev = cur;
+      do
+        {
+          char ch = *cur;
+          unsigned int flags = stopchar_map[(unsigned int)ch] & map_flags;
+          if (!flags)
+            cur++; /* likely */
+          else
+            {
+              /* Flush pending output. */
+              if (prev != cur)
+                {
+                  o = variable_buffer_output (o, prev, cur - prev);
+                  len_out += cur  - prev;
+                }
+
+              /* Dollar is quoted by duplicating the dollar: */
+              if (flags & MAP_VARIABLE)
+                {
+                  o = variable_buffer_output (o, "$", 1);
+                  prev = cur++;
+                }
+              /* The rest is quoted by '\': */
+              else
+                {
+                  size_t const max_slashes = cur - prev;
+                  size_t slashes = 0;
+                  while (slashes < max_slashes && cur[1 - slashes] == '\\')
+                    slashes++;
+                  if (slashes)
+                    {
+                      o  = variable_buffer_output (o, &cur[0 - slashes], slashes);
+                      len_out += slashes;
+                    }
+                  o  = variable_buffer_output (o, "\\", 1);
+                  prev = cur++;
+                }
+            }
+        }
+      while ((uintptr_t)cur < (uintptr_t)end);
+
+      /* Flush pending output. */
+      if (prev != cur)
+        {
+          o = variable_buffer_output (o, prev, cur - prev);
+          len_out += cur  - prev;
+        }
+
+      /* Escape trailing slashes when needed. */
+      if (   o[-1] == '\\'
+          && quote_trailing_slashes)
+        {
+          size_t slashes = 1;
+          while (slashes < len_out && o[-1 - slashes] == '\\')
+            slashes++;
+          while (slashes-- > 0)
+            o  = variable_buffer_output (o, "\\", 1);
+        }
+    }
+  else
+      OS (error, reading_file, "%s: cannot quote empty string", funcname);
+  return o;
+}
+
+# ifdef KMK
+
+/* Helper for func_quote_make that checks if there are more arguments
+   that produces output or not. */
+
+static int func_quote_make_has_more_non_empty_args (char **argv)
+{
+  for (;;)
+    {
+      char *arg = *argv;
+      if (!arg)
+        return 0;
+      if (*arg)
+        return 1;
+      argv++;
+    }
+}
+
+/* Takes zero or more plain strings and escapes (quotes) spaces and other
+   problematic characters, GNU make style.
+
+   There is one slightly problematic aspect of using this, if the input ends
+   with backslashes whether or not they will be reduced or taken as-is depends
+   on whether they appear at the end of a line or not.  They are taken as-is
+   when at the end of a line, otherwise they'll be subject to unescaping
+   (unquoting) and reduced by half.
+
+   In addition, the quoting style differs for files on the left side and
+   right side of the recipe colon.  Colons aren't escaped are only escaped
+   on the left side (target), and the pipe character is only escaped on the
+   right side (deps).
+
+   For this reason there are four variants of this function. */
+
+static char *func_quote_make (char *o, char **argv, const char *funcname)
+{
+  int const is_dep = funcname[5] == '-' && funcname[6] == 'd';
+  int const is_tgt = funcname[5] == '-' && funcname[6] == 't';
+  int const quote_trailing_slashes = funcname[5] == '\0' || funcname[9] == '\0';
+  char * const o_initial = o;
+  int i;
+
+  assert (    quote_trailing_slashes
+          == (!strcmp (funcname, "quote") || !strcmp (funcname, "quote-dep") || !strcmp (funcname, "quote-tgt")));
+  assert (is_dep == !strncmp (funcname, "quote-dep", sizeof ("quote-dep") - 1));
+  assert (is_tgt == !strncmp (funcname, "quote-tgt", sizeof ("quote-tgt") - 1));
+
+  for (i = 0; argv[i]; i++)
+    {
+      char *arg = argv[i];
+      if (*arg)
+        {
+          /* Add space separator. */
+          if (o != o_initial)
+            o = variable_buffer_output (o, " ", 1);
+
+          /* Output the quoted argument: */
+          if (quote_trailing_slashes)
+            o = helper_quote_make (o, arg, strlen (arg), is_dep, is_tgt,
+                                   quote_trailing_slashes, funcname);
+          else
+            {
+              char *end = strchr (arg, '\0');
+              int qts = end != arg && end[-1] == '\\'
+                     && func_quote_make_has_more_non_empty_args (&argv[i + 1]);
+              o = helper_quote_make (o, arg, strlen (arg), is_dep, is_tgt,
+                                     qts, funcname);
+            }
+        }
+      else
+          OS (error, reading_file, "%s: cannot munge empty string", funcname);
+    }
+
+  return o;
+}
+
+# endif /* KMK */
+
+/* Worker for func_quote_shell() for escaping a string that's inside
+   double quotes. */
+
+static char *func_escape_shell_in_dq (char *o, const char *arg, size_t len)
+{
+  const char *prev = arg;
+  while (len-- > 0)
+    {
+      char const ch = *arg;
+      switch (ch)
+        {
+          default:
+            arg++;
+            break;
+          case '!':
+          case '$':
+          case '`':
+          case '"':
+          case '\\':
+          case '\n':
+            if (prev != arg)
+              o = variable_buffer_output (o, prev, arg - prev);
+            o = variable_buffer_output (o, "\\", 1);
+            prev = arg;
+            arg++;
+            break;
+        }
+    }
+  if (prev != arg)
+    o = variable_buffer_output (o, prev, arg - prev);
+  return o;
+}
+
+# ifdef KMK
+/* quote-sh-dq */
+
+static char *func_quote_shell_dq (char *o, char **argv, const char *funcname UNUSED)
+{
+  return func_escape_shell_in_dq (o, argv[0], strlen (argv[0]));
+}
+# endif
+
+/* Worker for func_quote_shell() for escaping a string that's inside
+   single quotes. */
+
+static char *func_escape_shell_in_sq (char *o, const char *arg, size_t len)
+{
+  while (len > 0)
+    {
+      char *sq = memchr (arg, '\'', len);
+      if (!sq)
+          return variable_buffer_output (o, arg, len);
+      if (sq != arg)
+        o = variable_buffer_output (o, arg, sq - arg);
+      o = variable_buffer_output (o, "'\\''", 4);
+
+      /* advance */
+      sq++;
+      len -= sq - arg;
+      arg = sq;
+    }
+  return o;
+}
+
+# ifdef KMK
+/* quote-sh-dq */
+
+static char *func_quote_shell_sq (char *o, char **argv, const char *funcname UNUSED)
+{
+  return func_escape_shell_in_sq (o, argv[0], strlen (argv[0]));
+}
+#endif
+
+/* Output a shell argument with quoting as needed. */
+static char *helper_quote_shell (char *o, const char *arg, size_t len,
+                                 int leading_space)
+{
+  if (   memchr (arg, '$', len) != NULL
+      || memchr (arg, '*', len) != NULL
+      || memchr (arg, '?', len) != NULL
+      || memchr (arg, '[', len) != NULL)
+    {
+      if (leading_space)
+        o = variable_buffer_output (o, " '", 2);
+      else
+        o = variable_buffer_output (o, "'", 1);
+      o = func_escape_shell_in_sq (o, arg, len);
+      o = variable_buffer_output (o, "'", 1);
+    }
+  else if (   memchr (arg, ' ',  len) != NULL
+           || memchr (arg, '\t', len) != NULL
+           || memchr (arg, '\\', len) != NULL
+           || memchr (arg, '"',  len) != NULL
+           || memchr (arg, '`',  len) != NULL
+           || memchr (arg, '!',  len) != NULL
+           || memchr (arg, '|',  len) != NULL
+           || memchr (arg, '<',  len) != NULL
+           || memchr (arg, '>',  len) != NULL
+           || memchr (arg, '&',  len) != NULL
+           || memchr (arg, ';',  len) != NULL
+           || memchr (arg, '(',  len) != NULL
+           || memchr (arg, ')',  len) != NULL
+           || memchr (arg, '\n', len) != NULL)
+    {
+      if (leading_space)
+        o = variable_buffer_output (o, " \"", 2);
+      else
+        o = variable_buffer_output (o, "\"", 1);
+      o = func_escape_shell_in_dq (o, arg, len);
+      o = variable_buffer_output (o, "\"", 1);
+    }
+  else
+    {
+      if (leading_space)
+        o = variable_buffer_output (o, " ", 1);
+      o = variable_buffer_output (o, arg, len);
+    }
+  return o;
+}
+
+# ifdef KMK
+
+/* Takes zero or more plain strings and escapes/quotes spaces and other
+   problematic characters, bourne make style.
+
+   The quote-sh-dq and quote-sh-sq variants is for escaping strings that
+   going to be put into double quotes and single quotes respectively.
+
+   The normal quote-sh variant assumes it's free to do open and close
+   quotes as it pleases. */
+
+static char *func_quote_shell (char *o, char **argv, const char *funcname UNUSED)
+{
+  int i;
+  for (i = 0; argv[i]; i++)
+    o = helper_quote_shell (o, argv[i], strlen (argv[i]),
+                            i > 0 /*need_leading_space*/);
+  return o;
+}
+
+/* Unlinks CUR from *CHAINP and frees it, returning the next element. */
+
+static struct nameseq *
+helper_unlink_and_free_ns (struct nameseq *cur, struct nameseq *prev,
+                           struct nameseq **chainp)
+{
+  struct nameseq *freeit = cur; \
+    free ((char *)cur->name);
+  if (prev)
+    prev->next = cur = cur->next;
+  else
+    *chainp = cur = cur->next;
+  free_ns (freeit);
+  return cur;
+}
+
+/* Frees a chain returned by helper_parse_file_list. */
+
+static void free_ns_chain_no_strcache (struct nameseq *ns)
+{
+  while (ns != 0)
+    {
+      struct nameseq *t = ns;
+      free ((char *)ns->name);
+      ns = ns->next;
+      free_ns (t);
+    }
+}
+
+# endif /* KMK */
+
+/* Decoded style options for the $(q* ) and $(*file* ) functions. */
+#define Q_RET_MASK              0x000f
+#define Q_RET_QUOTED            0x0000
+#define Q_RET_QUOTED_DEP        0x0001
+#define Q_RET_QUOTED_DEP_END    0x0002
+#define Q_RET_QUOTED_TGT        0x0003
+#define Q_RET_QUOTED_TGT_END    0x0004
+#define Q_RET_UNQUOTED          0x0005
+#define Q_RET_SHELL             0x0006
+#define Q_RET_SHELL_IN_DQ       0x0007
+#define Q_RET_SHELL_IN_SQ       0x0008
+
+#define Q_IN_MASK               0x0070
+#define Q_IN_QUOTED             0x0000
+#define Q_IN_UNQUOTED           0x0010
+#define Q_IN_QUOTED_DEP         0x0020  /** @todo needed? */
+#define Q_IN_QUOTED_TGT         0x0030  /** @todo needed? */
+#define Q_IN_UNQUOTED_SINGLE    0x0040
+#define Q_IN_SEP_COMMA          0x0080  /* for VMS hacks, file lists only */
+
+#define Q_SEP_MASK              0x0700
+#define Q_SEP_SHIFT             8
+#define Q_SEP_SPACE             0x0000
+#define Q_SEP_TAB               0x0100
+#define Q_SEP_NL                0x0200
+#define Q_SEP_NL_TAB            0x0300
+#define Q_SEP_COMMA             0x0400  /* for VMS, output only */
+
+#define Q_QDEFAULT              (Q_IN_QUOTED | Q_RET_QUOTED | Q_SEP_SPACE)
+#ifndef VMS
+# define Q_QDEFAULT_VMS_TRICKS  Q_QDEFAULT
+#else /* VMS: Treat ',' as file separators in input, maybe output too. */
+# define Q_QDEFAULT_VMS_TRICKS  (Q_IN_SEP_COMMA | \
+    (!vms_comma_separator ? Q_QDEFAULT \
+     : (Q_QDEFAULT & ~Q_SEP_MASK) | Q_SEP_COMMA)
+#endif
+
+# ifdef KMK
+/* Decodes the optional style argument.  This is chiefly for the return
+   style, but can also pick the input and space styles (just because we can).  */
+
+static unsigned int helper_file_quoting_style (char *style, unsigned int intstyle)
+{
+  if (style != NULL)
+    {
+      for (;;)
+        {
+          /* Skip blanks: */
+          while (ISBLANK (*style))
+            style++;
+          if (*style != '\0')
+            {
+              /* Find the end of the current word: */
+              char * const start = style;
+              size_t len;
+              char ch;
+              while (!ISBLANK ((ch = *style)) && ch != '\0')
+                style++;
+              len = style - start;
+
+              /* String "switch" to decode the word: */
+
+#define MATCH(a_str)  (len == sizeof (a_str) - 1 && memcmp (start, a_str, sizeof (a_str)) == 0)
+              /* return styles: */
+              if (MATCH ("quoted")              || MATCH ("q"))
+                intstyle = (intstyle & ~Q_RET_MASK) | Q_RET_QUOTED;
+              else if (MATCH ("unquoted")       || MATCH ("unq")        || MATCH ("u"))
+                intstyle = (intstyle & ~Q_RET_MASK) | Q_RET_UNQUOTED;
+              else if (MATCH ("quoted-dep")     || MATCH ("q-dep")      || MATCH ("q-d"))
+                intstyle = (intstyle & ~Q_RET_MASK) | Q_RET_QUOTED_DEP;
+              else if (MATCH ("quoted-dep-end") || MATCH ("q-dep-end")  || MATCH ("q-d-e"))
+                intstyle = (intstyle & ~Q_RET_MASK) | Q_RET_QUOTED_DEP_END;
+              else if (MATCH ("quoted-tgt")     || MATCH ("q-tgt")      || MATCH ("q-t"))
+                intstyle = (intstyle & ~Q_RET_MASK) | Q_RET_QUOTED_TGT;
+              else if (MATCH ("quoted-tgt-end") || MATCH ("q-tgt-end")  || MATCH ("q-t-e"))
+                intstyle = (intstyle & ~Q_RET_MASK) | Q_RET_QUOTED_TGT_END;
+              else if (MATCH ("shell")          || MATCH ("sh"))
+                intstyle = (intstyle & ~Q_RET_MASK) | Q_RET_SHELL;
+              else if (MATCH ("shell-in-dq")    || MATCH ("sh-i-d"))
+                intstyle = (intstyle & ~Q_RET_MASK) | Q_RET_SHELL_IN_DQ; /* returned string is used inside double shell quotes */
+              else if (MATCH ("shell-in-sq")    || MATCH ("sh-i-s"))
+                intstyle = (intstyle & ~Q_RET_MASK) | Q_RET_SHELL_IN_SQ; /* returned string is used inside single shell quotes */
+              /* input styles: */
+              else if (MATCH ("in-quoted")         || MATCH ("i-q"))
+                intstyle = (intstyle & ~Q_IN_MASK) | Q_IN_QUOTED;
+              else if (MATCH ("in-unquoted")       || MATCH ("i-unq")   || MATCH ("i-u"))
+                intstyle = (intstyle & ~Q_IN_MASK) | Q_IN_UNQUOTED;
+              else if (MATCH ("in-unquoted-single")|| MATCH ("i-unq-s") || MATCH ("i-u-s")
+                    || MATCH ("in-unquoted-file")  || MATCH ("i-unq-f") || MATCH ("i-u-f"))
+                intstyle = (intstyle & ~Q_IN_MASK) | Q_IN_UNQUOTED_SINGLE;
+              else if (MATCH ("in-quoted-dep")     || MATCH ("i-q-dep") || MATCH ("i-q-d"))
+                intstyle = (intstyle & ~Q_IN_MASK) | Q_IN_QUOTED_DEP;
+              else if (MATCH ("in-quoted-tgt")     || MATCH ("i-q-tgt") || MATCH ("i-q-t"))
+                intstyle = (intstyle & ~Q_IN_MASK) | Q_IN_QUOTED_TGT;
+              else if (MATCH ("in-sep-comma")      || MATCH ("i-s-com") || MATCH ("i-s-c"))
+                intstyle |= Q_IN_SEP_COMMA; /*?*/
+              /* separator styles (output): */
+              else if (MATCH ("sep-space")  || MATCH ("s-space")  || MATCH ("s-s"))
+                intstyle = (intstyle & ~Q_SEP_MASK) | Q_SEP_SPACE;
+              else if (MATCH ("sep-tab")    || MATCH ("s-tab")    || MATCH ("s-t"))
+                intstyle = (intstyle & ~Q_SEP_MASK) | Q_SEP_TAB;
+              else if (MATCH ("sep-nl")     || MATCH ("s-nl")     || MATCH ("s-n"))
+                intstyle = (intstyle & ~Q_SEP_MASK) | Q_SEP_NL;
+              else if (MATCH ("sep-nl-tab") || MATCH ("s-nl-tab") || MATCH ("s-n-t"))
+                intstyle = (intstyle & ~Q_SEP_MASK) | Q_SEP_NL_TAB;
+              else if (MATCH ("sep-comma")  || MATCH ("s-comma")  || MATCH ("s-c"))
+                intstyle = (intstyle & ~Q_SEP_MASK) | Q_SEP_COMMA;
+              else
+                {
+                  char savedch = *style;
+                  *style = '\0';
+                  OS (error, reading_file, "Unknown file style: %s", start);
+                  *style = savedch;
+                }
+#undef MATCH
+            }
+          else
+            break;
+        }
+    }
+  return intstyle;
+}
+# endif /* KMK */
+
+/* Output (returns) a separator according to STYLE. */
+
+static char *helper_return_sep (char *o, unsigned int style)
+{
+  /* Note! Must match Q_SEP_MASK! */
+  static struct
+  {
+    const char *sep;
+    size_t len;
+  } const seps[8] =
+  {
+    { " ",    1 },
+    { "\t",   1 },
+    { "\n",   1 },
+    { "\n\t", 2 },
+    { ",",    1 },
+    { " ",    1 },
+    { " ",    1 },
+    { " ",    1 }
+  };
+
+  return variable_buffer_output(o,
+                                seps[(style & Q_SEP_MASK) >> Q_SEP_SHIFT].sep,
+                                seps[(style & Q_SEP_MASK) >> Q_SEP_SHIFT].len);
+}
+
+/* Removes one separator from the output.
+
+This is typically used when outputting lists where there is no simple way of
+telling whether an entry is the last one or not.  So, is_last is always false
+and the last separator is removed afterwards by this function. */
+
+MY_INLINE char *helper_drop_separator (char *o, unsigned int style)
+{
+  o -= (style & Q_SEP_MASK) != Q_SEP_NL_TAB ? 1 : 2;
+  *o = '\0'; /* not strictly necessary */
+  return o;
+}
+
+
+/* Outputs (returns) the given file. */
+
+static char *helper_return_file_len (char *o, const char *file, size_t len,
+                                     unsigned int style, int is_last)
+{
+  assert (memchr (file, '\0', len) == NULL);
+  switch (style & Q_RET_MASK)
+    {
+      case Q_RET_UNQUOTED:
+        o = variable_buffer_output (o, file, len);
+        break;
+      case Q_RET_QUOTED:
+        o = helper_quote_make (o, file, len, 0 /*is_dep*/, 0 /*is_tgt*/,
+                               !is_last /*quote_trailing_slashes*/, NULL);
+        break;
+      case Q_RET_QUOTED_DEP:
+        o = helper_quote_make (o, file, len, 1 /*is_dep*/, 0 /*is_tgt*/,
+                               !is_last /*quote_trailing_slashes*/, NULL);
+        break;
+      case Q_RET_QUOTED_DEP_END:
+        o = helper_quote_make (o, file, len, 1 /*is_dep*/, 0 /*is_tgt*/,
+                               0 /*quote_trailing_slashes*/, NULL);
+        break;
+      case Q_RET_QUOTED_TGT:
+        o = helper_quote_make (o, file, len, 0 /*is_dep*/, 1 /*is_tgt*/,
+                               !is_last /*quote_trailing_slashes*/, NULL);
+        break;
+      case Q_RET_QUOTED_TGT_END:
+        o = helper_quote_make (o, file, len, 0 /*is_dep*/, 1 /*is_tgt*/,
+                               0 /*quote_trailing_slashes*/, NULL);
+        break;
+      case Q_RET_SHELL:
+        o = helper_quote_shell (o, file, len, 0 /*need_leading_space*/);
+        break;
+      case Q_RET_SHELL_IN_DQ:
+        o = func_escape_shell_in_dq (o, file, len);
+        break;
+      case Q_RET_SHELL_IN_SQ:
+        o = func_escape_shell_in_sq (o, file, len);
+        break;
+      default:
+        assert (0);
+    }
+
+  /* Add separator space if not last. */
+  if (!is_last)
+    o = helper_return_sep (o, style);
+  return o;
+}
+
+/* Outputs (returns) the given file. */
+
+static char *helper_return_file (char *o, const char *file,
+                                 unsigned int style, int is_last)
+{
+  return helper_return_file_len (o,file, strlen (file), style, is_last);
+}
+
+#endif /* KMK || CONFIG_WITH_LAZY_DEPS_VARS */
+#ifdef KMK
+
+/* Outputs (returns) the given CHAIN and frees it. */
+
+static char *helper_return_and_free_chain (char *o, struct nameseq *chain, unsigned int style)
+{
+  struct nameseq *cur;
+  for (cur = chain; cur; cur = cur->next)
+    o = helper_return_file (o, cur->name, style, cur->next == NULL);
+  free_ns_chain_no_strcache (chain);
+  return o;
+}
+
+
+/* Helper for helper_parse_file_list that globs a name sequence. */
+static struct nameseq *
+helper_glob_chain (struct nameseq *chain)
+{
+  struct nameseq *prev = NULL;
+  struct nameseq *cur = chain;
+  glob_t gl;
+  dir_setup_glob (&gl);
+
+  /** @todo XXX: !NO_ARCHIVES  */
+  while (cur)
+    {
+      switch (glob (cur->name, GLOB_NOSORT | GLOB_ALTDIRFUNC, NULL, &gl))
+        {
+        case 0: /* Replace CUR with the names found. */
+          {
+            struct nameseq *subchain = NULL;
+            struct nameseq **ppnext = &subchain;
+            const char ** const names = (const char **)gl.gl_pathv;
+            size_t const num_names = gl.gl_pathc;
+            size_t idx;
+
+            cur = helper_unlink_and_free_ns (cur, prev, &chain);
+
+            for (idx = 0; idx < num_names; idx++)
+              {
+#ifndef CONFIG_WITH_ALLOC_CACHES
+                struct nameseq *newp = xcalloc (sizeof (*newp));
+#else
+                struct nameseq *newp = alloccache_calloc (&nameseq_cache);
+#endif
+                newp->name = xstrdup (names[idx]);
+                newp->next = NULL;
+                *ppnext = newp;
+                ppnext = &newp->next;
+              }
+
+            if (subchain) /* parnaoia */
+              {
+                *ppnext = cur;
+                if (prev)
+                  prev->next = subchain;
+                else
+                  chain = subchain;
+              }
+            break;
+          }
+
+        case GLOB_NOMATCH: /* doesn't exist, remove */
+          cur = helper_unlink_and_free_ns (cur, prev, &chain);
+          break;
+
+        default: /* Keep it. */
+          prev = cur;
+          cur = cur->next;
+          break;
+
+        case GLOB_NOSPACE:
+          OUT_OF_MEM();
+        }
+      globfree (&gl);
+    }
+  return chain;
+}
+
+/* Parses a file/word list according to STYLE and returns a name list.
+
+   The FILELIST parameter may be modified!
+
+   The GLOB param is for wildcard/qwildcard.
+
+   TODO/XXX: Unquote and split up the FILELIST directly.  All function
+             arguments are heap copies already, so we are free to modify
+             them.  Would be nice to ditch the nameseq in favor of something
+             which also includes the length. */
+
+static struct nameseq *
+helper_parse_file_list (char *filelist, unsigned int style, int glob)
+{
+  if (filelist && *filelist != '\0')
+    {
+      /* Q_IN_SEP_COMMA: VMS tricks for qbasename, qdir, qnotdir and qsuffix
+         where commas are treated as separtors in FILELIST.  We simply
+         replace commas in the FILELIST before doing the regular parsing. */
+      if (!(style & Q_IN_SEP_COMMA))
+        { /* typical */ }
+      else
+        {
+          size_t len = strlen (filelist);
+          char *start = filelist;
+          char *comma = (char *)memchr (filelist, ',', len);
+          while (comma)
+            {
+              *comma = ' ';
+              len -= comma - start - 1;
+              if (len)
+                {
+                  start = comma + 1;
+                  comma = (char *)memchr (start, ',', len);
+                }
+              else
+                break;
+            }
+        }
+
+      switch (style & Q_IN_MASK)
+        {
+          case Q_IN_QUOTED:
+          case Q_IN_QUOTED_DEP: /** @todo ?? */
+          case Q_IN_QUOTED_TGT: /** @todo ?? */
+            return PARSE_FILE_SEQ(&filelist, struct nameseq, MAP_NUL, NULL,
+                                  !glob
+                                  ? PARSEFS_NOGLOB | PARSEFS_NOSTRIP | PARSEFS_NOCACHE
+                                  : PARSEFS_NOSTRIP | PARSEFS_NOCACHE | PARSEFS_EXISTS);
+
+          case Q_IN_UNQUOTED:
+            {
+              struct nameseq *chain = NULL;
+              struct nameseq **ppnext = &chain;
+              const char *it = filelist;
+              const char *cur;
+              unsigned int curlen;
+              while ((cur = find_next_token (&it, &curlen)) != NULL)
+                {
+#ifndef CONFIG_WITH_ALLOC_CACHES
+                  struct nameseq *newp = xcalloc (sizeof (*newp));
+#else
+                  struct nameseq *newp = alloccache_calloc (&nameseq_cache);
+#endif
+                  newp->name = xstrndup (cur, curlen);
+                  newp->next = NULL;
+                  *ppnext = newp;
+                  ppnext = &newp->next;
+                }
+              if (!glob)
+                return chain;
+              return helper_glob_chain (chain);
+            }
+
+          case Q_IN_UNQUOTED_SINGLE:
+            if (*filelist != '\0')
+              {
+#ifndef CONFIG_WITH_ALLOC_CACHES
+                struct nameseq *newp = xcalloc (sizeof (*newp));
+#else
+                struct nameseq *newp = alloccache_calloc (&nameseq_cache);
+#endif
+                newp->name = xstrdup (filelist);
+                newp->next = NULL;
+                if (!glob)
+                  return newp;
+                return helper_glob_chain (newp);
+              }
+            return NULL;
+
+          default:
+            assert (0);
+            return NULL;
+        }
+    }
+  return NULL;
+}
+
+/* $(requote style, file1 file2 ... fileN). */
+
+static char *func_requote (char *o, char **argv, const char *funcname UNUSED)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  struct nameseq *chain = helper_parse_file_list (argv[1], style, 0);
+  return helper_return_and_free_chain (o, chain, style);
+}
+
+/* Common worker for func_firstfile() and func_qfirstfile(). */
+
+static char *common_firstfile (char *o, char **argv, unsigned int style)
+{
+  struct nameseq *chain = helper_parse_file_list (argv[0], style, 0);
+  if (chain)
+    {
+      o = helper_return_file (o, chain->name, style, 1);
+      free_ns_chain_no_strcache (chain);
+    }
+  return o;
+}
+
+/* $(firstfile file1 file2 ... fileN) - same as $(firstfile ), except
+   for files rather than word tokens.  See func_firstword().  */
+
+static char *func_firstfile (char *o, char **argv, const char *funcname UNUSED)
+{
+  return common_firstfile(o, argv, Q_IN_QUOTED | Q_RET_QUOTED | Q_SEP_SPACE);
+}
+
+/* $(qfirstfile style, file1 file2 ... fileN) - same as $(firstfile ), except
+   for files rather than word tokens.  See func_firstword().  */
+
+static char *func_q_firstfile (char *o, char **argv, const char *funcname UNUSED)
+{
+  unsigned int style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  return common_firstfile(o, &argv[1], style);
+}
+
+/* Common worker for func_lastfile() and func_q_lastfile(). */
+
+static char *common_lastfile (char *o, char **argv, unsigned int style)
+{
+  struct nameseq *chain = helper_parse_file_list (argv[0], style, 0);
+  if (chain)
+    {
+      struct nameseq *last = chain;
+      while (last->next)
+        last = last->next;
+      o = helper_return_file (o, last->name, style, 1);
+      free_ns_chain_no_strcache (chain);
+    }
+  return o;
+}
+
+/* $(lastfile file1 file2 ... fileN) - same as $(lastfile ), except
+   for files rather than word tokens.  See func_lastword(). */
+
+static char *func_lastfile (char *o, char **argv, const char *funcname UNUSED)
+{
+  return common_lastfile (o, argv, Q_IN_QUOTED | Q_RET_QUOTED | Q_SEP_SPACE);
+}
+
+/* $(qlastfile style, file1 file2 ... fileN) - same as $(lastfile ), except
+   for files rather than word tokens.  See func_lastword(). */
+
+static char *func_q_lastfile (char *o, char **argv, const char *funcname UNUSED)
+{
+  unsigned int style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  return common_lastfile (o, &argv[1], style);
+}
+
+/* Common worker for func_filelist() and func_q_filelist(). */
+
+static char *common_filelist (char *o, char **argv, unsigned int style)
+{
+  int start;
+  int count;
+
+  /* Check the arguments.  */
+  check_numeric (argv[0],
+                 _("non-numeric first argument to 'filelist' function"));
+  check_numeric (argv[1],
+                 _("non-numeric second argument to 'filelist' function"));
+
+  start = atoi (argv[0]);
+  if (start < 1)
+    ON (fatal, *expanding_var,
+        "invalid first argument to 'filelist' function: '%d'", start);
+  start--; /* make zero based */
+
+  count = atoi (argv[1]) - start;
+
+  if (count > 0)
+    {
+      char *line = argv[2];
+      struct nameseq *cur;
+      struct nameseq *chain;
+      chain = helper_parse_file_list (line, style, 0);
+
+      /* Find the beginning of the "start"th word (1-based).  */
+      for (cur = chain; cur && start > 1; cur = cur->next)
+        start--;
+
+      /* Output the requested count */
+      while (cur && count-- > 0)
+        o = helper_return_file (o, cur->name, style, count > 0 && cur->next);
+
+      free_ns_chain_no_strcache (chain);
+    }
+
+  return o;
+}
+
+/* $(filelist start, end, file1..fileN) - same as $(wordlist),
+   except for files rather than word tokens.  See func_wordlist(). */
+
+static char *func_filelist (char *o, char **argv, const char *funcname UNUSED)
+{
+  return common_filelist (o, argv, Q_IN_QUOTED | Q_RET_QUOTED | Q_SEP_SPACE);
+}
+
+/* $(qfilelist style, start, end, file1..fileN) - same as $(wordlist),
+   except for files rather than word tokens.  See func_wordlist(). */
+
+static char *func_q_filelist (char *o, char **argv, const char *funcname UNUSED)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  return common_filelist (o, &argv[1], style);
+}
+
+/* Common worker for func_countfiles() and func_q_countfiles(). */
+
+static char *common_countfiles (char *o, char **argv, unsigned int style)
+{
+  struct nameseq *chain = helper_parse_file_list (argv[0], style, 0);
+  struct nameseq *cur;
+  unsigned int files = 0;
+  char retval[32];
+
+  for (cur = chain; cur; cur = cur->next)
+    files++;
+  free_ns_chain_no_strcache (chain);
+
+  return variable_buffer_output (o, retval, sprintf (retval, "%u", files));
+}
+
+/* $(countfiles file1 file2 ... fileN) - same as $(words ), except for
+   files rather than word tokens.  See func_words(). */
+
+static char *func_countfiles (char *o, char **argv, const char *funcname UNUSED)
+{
+  return common_countfiles (o, argv, Q_IN_QUOTED | Q_RET_QUOTED | Q_SEP_SPACE);
+}
+
+/* $(qcountfiles style, file1 file2 ... fileN) - same as $(words ), except for
+   files rather than word tokens and the STYLE argument.  See func_words(). */
+
+static char *func_q_countfiles (char *o, char **argv, const char *funcname UNUSED)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  return common_countfiles (o, &argv[1], style);
+}
+
+/* Helper that sets the variable value. */
+
+static void
+helper_set_var_value (struct variable *var, const char *value, size_t len)
+{
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  free (var->value);
+  var->value = xstrndup (value, len);
+#else
+  if (len >= var->value_alloc_len)
+    {
+# ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+      if (var->rdonly_val)
+        var->rdonly_val = 0;
+      else
+# endif
+        free (var->value);
+      var->value_alloc_len = VAR_ALIGN_VALUE_ALLOC (len + 1);
+      var->value = xmalloc (var->value_alloc_len);
+    }
+  memcpy (var->value, value, len);
+  var->value[len] = '\0';
+  var->value_length = len;
+  VARIABLE_CHANGED (var);
+#endif
+}
+
+/* Common worker for func_foreachfile and func_qforeachfile. */
+
+static char *
+common_foreachfile (char *o, char **argv, unsigned int style)
+{
+  /* expand only the first two.  */
+  char *varname = expand_argument (argv[0], NULL);
+  char *list = expand_argument (argv[1], NULL);
+  const char *body = argv[2];
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  long body_len = strlen (body);
+#endif
+
+  struct nameseq *chain = helper_parse_file_list (list, style, 0);
+  struct nameseq *cur;
+
+  /* Clean up the variable name by removing whitespace.  */
+  struct variable *var;
+  char *vp = next_token (varname);
+  char *vp_end = end_of_token (vp);
+  vp_end[0] = '\0';
+
+  push_new_variable_scope ();
+  var = define_variable (vp, vp_end - vp, "", o_automatic, 0);
+
+  /* Don't need the list any more. */
+  free (list);
+  list = NULL;
+
+  /* Loop through the chain. */
+  for (cur = chain; cur; cur = cur->next)
+    {
+      /* Update the variable value: */
+      unsigned int const len = strlen (cur->name);
+      switch (style & Q_RET_MASK)
+        {
+        case Q_RET_UNQUOTED:
+          helper_set_var_value (var, cur->name, len);
+          break;
+        default:
+          { /* Use the output buffer as temporary storage. */
+            size_t const saved_off = o - variable_buffer;
+            size_t quoted_len;
+            char *quoted;
+            o = helper_return_file_len (o, cur->name, len, style, 1 /*is_last*/);
+            quoted = &variable_buffer[saved_off];
+            quoted_len = o - quoted;
+            helper_set_var_value (var, quoted, quoted_len);
+            o = quoted;
+            break;
+          }
+        }
+
+      /* Expand the body: */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      {
+        char *result = allocated_variable_expand (body);
+        o = variable_buffer_output (o, result, strlen (result));
+        free (result);
+      }
+#else
+      variable_expand_string_2 (o, body, body_len, &o);
+#endif
+
+      /* Add separator: */
+      if (cur->next)
+        o = helper_return_sep (o, style);
+    }
+
+  pop_variable_scope ();
+  free (varname);
+
+  return o;
+}
+
+/* $(foreachfile var, filelist, body) - same as $(foreach ), except
+   for file rather than word tokens.
+   See also func_foreach(). */
+
+static char *
+func_foreachfile (char *o, char **argv, const char *funcname UNUSED)
+{
+  return common_foreachfile (o, argv, Q_IN_QUOTED | Q_RET_QUOTED | Q_SEP_SPACE);
+}
+
+/* $(qforeachfile style, var, filelist, body) - same as $(foreach ), except
+   for file rather than word tokens and flexible variable value encoding.
+   See also func_foreach(). */
+
+static char *
+func_q_foreachfile (char *o, char **argv, const char *funcname UNUSED)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  return common_foreachfile (o, &argv[1], style);
+}
+
+/* Common worker for func_sortfiles() and func_q_sortfiles(). */
+
+static char *common_sortfiles (char *o, char **argv, unsigned int style,
+                               int ascending, int version)
+{
+  struct nameseq *chain = helper_parse_file_list (argv[0], style, 0);
+
+  /* Count the number of files to determin the array size and whether we've
+     got anything to sort. */
+  struct nameseq *cur;
+  unsigned int num_files = 0;
+  for (cur = chain; cur; cur = cur->next)
+    num_files++;
+
+  if (num_files <= 1)
+    o = helper_return_and_free_chain (o, chain, style);
+  else
+    {
+      /* Create array of string pointers from the chain. */
+      char **files = (char **)xmalloc (num_files * sizeof (char *));
+      unsigned int idx = 0;
+      for (cur = chain; cur; cur = cur->next)
+        files[idx++] = (char *)cur->name;
+
+      /* Sort it. */
+      if (version)
+        qsort(files, num_files, sizeof(files[0]), version_compare_wrapper);
+      else
+        qsort(files, num_files, sizeof(files[0]), alpha_compare);
+
+      /* Output. We skip equal files. */
+      if (ascending)
+        for (idx = 0; idx < num_files; idx++)
+          {
+            const char *curfile = files[idx];
+            while (idx + 1 < num_files && strcmp(files[idx + 1], curfile) == 0)
+              idx++;
+            o = helper_return_file(o, files[idx], style, idx + 1 >= num_files);
+          }
+      else
+        {
+          idx = num_files;
+          while (idx-- > 0)
+            {
+              const char *curfile = files[idx];
+              while (idx > 0 && strcmp(files[idx - 1], curfile) == 0)
+                idx--;
+              o = helper_return_file (o, curfile, style, idx == 0);
+            }
+        }
+
+      free (files);
+      free_ns_chain_no_strcache (chain);
+    }
+  return o;
+}
+
+/* $(sortfiles file1 ... fileN) and
+   $(rsortfiles file1 ... fileN) - same as $(sort ) and $(rsort ),
+   except for files rather than word tokens.  See func_sort(). */
+
+static char *func_sortfiles (char *o, char **argv, const char *funcname)
+{
+  return common_sortfiles (o, argv, Q_IN_QUOTED | Q_RET_QUOTED | Q_SEP_SPACE,
+                           funcname[0] != 'r',
+                           funcname[0] == 'v' || funcname[1] == 'v');
+}
+
+/* $(qsortfiles style, file1 ... fileN) and
+   $(qrsortfiles style, file1 ... fileN) - same as $(sort ) and $(rsort ),
+   except for files rather than word tokens and the flexible style.
+   See func_sort(). */
+
+static char *func_q_sortfiles (char *o, char **argv, const char *funcname)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  return common_sortfiles (o, &argv[1], style, funcname[1] != 'r',
+                           funcname[1] == 'v' || funcname[2] == 'v');
+}
+
+
+/* Helper for determining whether the given path is absolute or not. */
+
+static int helper_is_abs (const char *path)
+{
+#ifdef HAVE_DOS_PATHS
+  return path[0] == '/'
+      || path[0] == '\\'
+      || (isalpha(path[0]) && path[1] == ':');
+#else
+  return path[0] == '/';
+#endif
+}
+
+/* Worker for func_q_abspath and func_q_abspath_ex. */
+
+static char *worker_abspath (char *o, char *line, const char *cwd,
+                             size_t cwd_len, unsigned int style)
+{
+  if (line && *line != '\0')
+    {
+      PATH_VAR (outbuf);
+      struct nameseq *chain = helper_parse_file_list (line, style, 0);
+
+      /* Special case: single path, no cwd - no is_last path trouble */
+      if (chain && !chain->next && !cwd)
+        {
+          if (abspath (chain->name, outbuf))
+            o = helper_return_file(o, outbuf, style, 1);
+          free_ns_chain_no_strcache (chain);
+        }
+      else if (chain)
+        {
+          /* Pass one: replace names by absolute names */
+          struct nameseq *prev = NULL;
+          struct nameseq *cur = chain;
+          while (cur)
+            {
+              /* If relative path and we've got cwd, join cwd and it. */
+              if (cwd && !helper_is_abs (cur->name))
+                {
+                  size_t len_name = strlen (cur->name);
+                  char *name = xrealloc ((char *)cur->name, cwd_len + 1 + len_name + 1);
+                  memmove (&name[cwd_len + 1], &name[0], len_name);
+                  memcpy (name, cwd, cwd_len);
+                  name[cwd_len] = '/';
+                  name[cwd_len + 1 + len_name] = '\0';
+                  cur->name = name;
+                }
+
+              if (abspath (cur->name, outbuf))
+                {
+                  free ((char *)cur->name);
+                  cur->name = xstrdup (outbuf);
+                  prev = cur;
+                  cur = cur->next;
+                }
+              else /* remove it */
+                cur = helper_unlink_and_free_ns (cur, prev, &chain);
+            }
+
+          /* Pass two: output */
+          o = helper_return_and_free_chain (o, chain, style);
+        }
+    }
+  return o;
+}
+
+/* $(qabspath style, file1 file2 ... fileN) - same as $(abspath ), except
+   for files rather than word tokens.  See func_abspath(). */
+
+static char *func_q_abspath (char *o, char **argv, const char *funcname UNUSED)
+{
+  return worker_abspath (o, argv[1], NULL, 0,
+                         helper_file_quoting_style (argv[0], Q_QDEFAULT));
+}
+
+# ifdef CONFIG_WITH_ABSPATHEX
+/* $(qabspathex style, file1 file2 ... fileN [,cwd]) - same as $(abspathex ),
+   except for files rather than word tokens.  See func_abspath_ex(). */
+
+static char *
+func_q_abspathex (char *o, char **argv, const char *funcname UNUSED)
+{
+  /* cwd needs leading spaces chopped and may be optional,
+     in which case we're exactly like $(abspath ). */
+  char *cwd = argv[2];
+  if (cwd)
+    {
+      while (ISBLANK (*cwd))
+        cwd++;
+      if (*cwd == '\0')
+        cwd = NULL;
+    }
+
+  return worker_abspath (o, argv[1], cwd, cwd ? strlen (cwd) : 0,
+                         helper_file_quoting_style (argv[0], Q_QDEFAULT));
+}
+# endif
+
+/* $(qaddprefix style, prefix, file1 ... fileN) and
+   $(qaddsuffix style, prefix, file1 ... fileN) - same as $(addprefix )
+   and $(addsuffix ) except for files rather than word tokens.
+   The suffix/prefix is unquoted on input and subjected to the same quoting
+   styling as the file names.
+   See func_addsuffix_addprefix(). */
+
+static char *func_q_addsuffix_addprefix (char *o, char **argv, const char *funcname UNUSED)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  const char * const fix = argv[1];
+  size_t const fixlen = strlen (fix);
+  struct nameseq *chain = helper_parse_file_list (argv[2], style, 0);
+  if (chain)
+    {
+      size_t tmpsize = (fixlen + 512) & ~(size_t)63;
+      char *tmp = (char *)xmalloc (tmpsize);
+      struct nameseq *cur;
+
+      if (funcname[4] == 'p')
+        {
+          memcpy (tmp, fix, fixlen);
+          for (cur = chain; cur; cur = cur->next)
+            {
+              size_t curlen = strlen (cur->name);
+              if (fixlen + curlen + 1 <= tmpsize)
+                { /* likely */ }
+              else
+                {
+                  tmpsize = (fixlen + curlen + 63) & ~(size_t)63;
+                  tmp = (char *)xrealloc (tmp, tmpsize);
+                }
+              memcpy (&tmp[fixlen], cur->name, curlen + 1);
+              o = helper_return_file_len (o, tmp, fixlen + curlen,
+                                          style, cur->next == NULL);
+            }
+        }
+      else
+        for (cur = chain; cur; cur = cur->next)
+          {
+            size_t curlen = strlen (cur->name);
+            if (fixlen + curlen + 1 <= tmpsize)
+              { /* likely */ }
+            else
+              {
+                tmpsize = (fixlen + curlen + 63) & ~(size_t)63;
+                tmp = (char *)xrealloc (tmp, tmpsize);
+              }
+            memcpy (tmp, cur->name, curlen);
+            memcpy (&tmp[curlen], fix, fixlen + 1);
+
+            o = helper_return_file_len (o, tmp, fixlen + curlen,
+                                        style, cur->next == NULL);
+          }
+      free_ns_chain_no_strcache (chain);
+    }
+  return o;
+}
+
+/* $(qbasename style, path1 .. pathN) and $(qdir style, path1 .. pathN)
+   - same as $(basename ) and $(dir ), except for files rather than word tokens.
+   See func_basename_dir(). */
+
+static char *
+func_q_basename_dir (char *o, char **argv, const char *funcname)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT_VMS_TRICKS);
+  struct nameseq *chain = helper_parse_file_list (argv[1], style, 0);
+  struct nameseq *cur;
+
+  int const is_basename = funcname[1] == 'b';
+  int const is_dir = !is_basename;
+  int const stop = MAP_DIRSEP | (is_basename ? MAP_DOT : 0) | MAP_NUL;
+
+  for (cur = chain; cur; cur = cur->next)
+    {
+      int const is_last = cur->next == NULL;
+      const char * const path = cur->name;
+      const char * const end = strchr (path, '\0');
+
+      /* Locate the last dot or path separator (P): */
+      const char *p = path != end ? end - 1 : end;
+      while (p >= path && !STOP_SET (*p, stop))
+        --p;
+
+      /* Do the outputting: */
+      if (p >= path && (is_dir))
+        o = helper_return_file_len (o, path, ++p - path, style, is_last);
+      else if (p >= path && *p == '.')
+        o = helper_return_file_len (o, path, p - path, style, is_last);
+#ifdef HAVE_DOS_PATHS
+      /* Handle the "d:foobar" case */
+      else if (path[0] && path[1] == ':' && is_dir)
+        o = helper_return_file_len (o, path, 2, style, is_last);
+#endif
+      else if (is_dir)
+#ifdef VMS
+        {
+          extern int vms_report_unix_paths;
+          o = helper_return_file_len (o, vms_report_unix_paths ? "./" : "[]",
+                                      2, style, is_last);
+        }
+#else
+# ifndef _AMIGA
+      o = helper_return_file_len (o, "./", 2, style, is_last);
+# else
+      ; /* Just a nop...  */
+# endif /* AMIGA */
+#endif /* !VMS */
+      else
+        /* The entire name is the basename.  */
+        o = helper_return_file_len (o, path, end - path, style, is_last);
+    }
+
+  free_ns_chain_no_strcache (chain);
+  return o;
+}
+
+/* $(qnotdir style, path1 ... pathN) - same as $(notdir ), except for
+   files rather than word tokens.  See func_notdir_suffix(). */
+
+static char *
+func_q_notdir (char *o, char **argv, const char *funcname)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT_VMS_TRICKS);
+  struct nameseq *chain = helper_parse_file_list (argv[1], style, 0);
+  struct nameseq *cur;
+  int const stop = MAP_DIRSEP;
+  (void)funcname;
+
+  for (cur = chain; cur; cur = cur->next)
+    {
+      int const is_last = cur->next == NULL;
+      const char * const path = cur->name;
+      const char * const end = strchr(path, '\0');
+
+      /* Locate the last dot or path separator (P): */
+      const char *p = path != end ? end - 1 : end;
+      while (p >= path && ! STOP_SET (*p, stop))
+        --p;
+
+      if ((uintptr_t)p >= (uintptr_t)path)
+          o = helper_return_file_len (o, p + 1, end - p - 1, style, is_last);
+#ifdef HAVE_DOS_PATHS
+      else if (path[0] && path[1] == ':')  /* "d:foo/bar" -> "foo/bar"  */
+        o = helper_return_file_len (o, path + 2, end - path - 2, style, is_last);
+#endif
+      else
+        o = helper_return_file_len (o, path, end - path, style, is_last);
+    }
+
+  free_ns_chain_no_strcache (chain);
+  return o;
+}
+
+/* $(qsuffix style, path1 ... pathN) - same as $(suffix ), except for
+   files rather than word tokens.  See func_notdir_suffix(). */
+
+static char *
+func_q_suffix (char *o, char **argv, const char *funcname)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT_VMS_TRICKS);
+  struct nameseq *chain = helper_parse_file_list (argv[1], style, 0);
+  struct nameseq *prev;
+  struct nameseq *cur;
+  int const stop = MAP_DIRSEP | MAP_DOT;
+  (void)funcname;
+
+  /* For suffixes we do a pre-pass that removes elements without suffixes.
+     This simplifies the handling of end-quoting. */
+  prev = NULL;
+  cur = chain;
+  while (cur)
+    {
+      const char * const path = cur->name;
+      if (strchr (path, '.') != NULL)
+        {
+          const char * const end = strchr (path, '\0');
+          const char *p = end - 1;
+          while ((uintptr_t)p >= (uintptr_t)path && ! STOP_SET (*p, stop))
+            --p;
+          if ((uintptr_t)p >= (uintptr_t)path && *p == '.')
+            {
+              if (p != path)
+                  memmove ((char *)path, p, end - p + 1);
+              prev = cur;
+              cur = cur->next;
+            }
+          else /* remove it */
+            cur = helper_unlink_and_free_ns (cur, prev, &chain);
+        }
+      else /* remove it */
+        cur = helper_unlink_and_free_ns (cur, prev, &chain);
+    }
+
+  /* Output pass: */
+  return helper_return_and_free_chain (o, chain, style);
+}
+
+# ifdef CONFIG_WITH_ROOT_FUNC
+/*
+ $(qroot style, path...pathN) - same as $(root ), except files rather
+ than space delimited word tokens.  See func_root().
+
+ This is mainly for dealing with drive letters and UNC paths on Windows
+ and OS/2.
+ */
+static char *
+func_q_root (char *o, char **argv, const char *funcname UNUSED)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  struct nameseq *chain = helper_parse_file_list (argv[1], style, 0);
+  struct nameseq *prev;
+  struct nameseq *cur;
+
+  /* First pass: Strip non-root components and remove rootless elements. */
+  prev = NULL;
+  cur = chain;
+  while (cur)
+    {
+      const char *path = cur->name;
+      const char *end  = NULL;
+      char ch;
+
+# ifdef HAVE_DOS_PATHS
+      if (isalpha(path[0]) && path[1] == ':')
+          end = path + 2;
+      else if (   IS_PATHSEP(path[0])
+               && IS_PATHSEP(path[1])
+               && !IS_PATHSEP(path[2]) && path[2]
+               && path[3])
+        {
+          /* Min recognized UNC: "//./" - find the next slash
+             Typical root: "//srv/shr/" */
+          /* XXX: Check if //./ needs special handling. */
+          end = path + 3;
+          while ((ch = *end) != '\0' && !IS_PATHSEP(ch))
+            end++;
+
+          if (IS_PATHSEP(ch) && !IS_PATHSEP(end[1]))
+            {
+              end++;
+              while ((ch = *end) != '\0' && !IS_PATHSEP(ch))
+                end++;
+            }
+          else
+            end = NULL; /* invalid */
+        }
+      else if (IS_PATHSEP(*end))
+        end = path + 1;
+      else
+        end = NULL;
+
+# elif defined (VMS) || defined (AMGIA)
+      /* XXX: VMS and AMGIA */
+      OS (fatal, NILF, _("$(%s ) is not implemented on this platform"), funcname);
+# else
+      if (IS_PATHSEP(*path))
+        end = path + 1;
+# endif
+      if (end != NULL)
+        {
+          /* Include all subsequent path separators. */
+
+          while ((ch = *end) != '\0' && IS_PATHSEP(ch))
+            end++;
+          *(char *)end = '\0';
+
+          prev = cur;
+          cur = cur->next;
+        }
+      else
+        cur = helper_unlink_and_free_ns(cur, prev, &chain);
+    }
+
+  /* Second pass: Output */
+  return helper_return_and_free_chain (o, chain, style);
+}
+
+/*
+ $(qnotroot style, path1 .. pathN) - same as $(notroot ), except files
+ rather than space delimited word tokens.  See func_notroot().
+
+ This is mainly for dealing with drive letters and UNC paths on Windows
+ and OS/2.
+ */
+static char *
+func_q_notroot (char *o, char **argv, const char *funcname UNUSED)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  struct nameseq *chain = helper_parse_file_list (argv[1], style, 0);
+  struct nameseq *cur;
+
+  for (cur = chain; cur; cur = cur->next)
+    {
+      const char *start = cur->name;
+      char ch;
+
+# ifdef HAVE_DOS_PATHS
+      if (isalpha(start[0]) && start[1] == ':')
+        start += 2;
+      else if (   IS_PATHSEP(start[0])
+               && IS_PATHSEP(start[1])
+               && !IS_PATHSEP(start[2]) && start[2] != '\0'
+               && start[3] != '\0')
+        {
+          /* Min recognized UNC: "//./" - find the next slash
+             Typical root: "//srv/shr/" */
+          /* XXX: Check if //./ needs special handling. */
+          start += 3;
+          while ((ch = *start) != '\0' && !IS_PATHSEP(ch))
+            start++;
+
+          if (IS_PATHSEP(ch) && !IS_PATHSEP(start[1]))
+            {
+              start++;
+              while ((ch = *start) != '\0' && !IS_PATHSEP(ch))
+                start++;
+            }
+          else
+            start = cur->name; /* invalid UNC, pretend it's a couple unixy root slashes. */
+        }
+
+# elif defined (VMS) || defined (AMGIA)
+      /* XXX: VMS and AMGIA */
+      OS (fatal, NILF, _("$(%s) is not implemented on this platform"), funcname);
+# endif
+
+      /* Exclude all subsequent / leading path separators. */
+      while ((ch = *start) != '\0' && IS_PATHSEP(ch))
+        start++;
+
+      if (ch != '\0')
+        o = helper_return_file(o, start, style, cur->next == NULL);
+      else
+        o = helper_return_file_len (o, ".", 1, style, cur->next == NULL);
+    }
+
+  free_ns_chain_no_strcache (chain);
+  return o;
+}
+
+# endif
+
+/* $(qrealpath style, path1 .. pathN) - same as $(realpath ), except files
+ rather than space delimited word tokens.  See func_realpath(). */
+
+static char *
+func_q_realpath (char *o, char **argv, const char *funcname UNUSED)
+{
+  PATH_VAR (outbuf);
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  struct nameseq *chain = helper_parse_file_list (argv[1], style, 0);
+
+  /* Pass one: Do the realpath/abspath thing and remove anything that fails
+               or doesn't exists. */
+  struct nameseq *cur = chain;
+  struct nameseq *prev = NULL;
+  while (cur)
+    {
+      char *result;
+#ifdef HAVE_REALPATH
+      ENULLLOOP (result, realpath (cur->name, outbuf));
+#else
+      result = abspath (cur->name, outbuf);
+#endif
+      if (result)
+        {
+           struct stat st;
+           int r;
+           EINTRLOOP (r, stat (outbuf, &st));
+           if (r == 0)
+             {
+               free ((char *)cur->name);
+               cur->name = xstrdup (result);
+               prev = cur;
+               cur = cur->next;
+             }
+           else
+             cur = helper_unlink_and_free_ns(cur, prev, &chain);
+        }
+      else
+        cur = helper_unlink_and_free_ns(cur, prev, &chain);
+    }
+
+  /* Pass two: Output. */
+  return helper_return_and_free_chain (o, chain, style);
+}
+
+/* $(qwildcard path1 .. pathN [, style]) - same as $(wildcard ), except files
+ rather than space delimited word tokens.  See func_wildcard(). */
+
+static char *
+func_q_wildcard (char *o, char **argv, const char *funcname UNUSED)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  struct nameseq *chain = helper_parse_file_list (argv[1], style, 1 /*glob*/);
+#ifdef _AMIGA
+  OS (fatal, NILF, _("$(%s ) is not implemented on this platform"), funcname);
+#endif
+  return helper_return_and_free_chain (o, chain, style);
+}
+
+static char *
+worker_filter_filterout (char *o, char **argv, unsigned style, int is_filter)
+{
+  struct nameseq *wordchain;
+  struct a_word *wordhead;
+  struct a_word **wordtail;
+  struct a_word *wp;
+  struct nameseq *patchain;
+  struct a_pattern *pathead;
+  struct a_pattern **pattail;
+  struct a_pattern *pp;
+  struct nameseq *cur;
+  struct hash_table a_word_table;
+  int literals;
+  int words;
+  int hashing;
+  unsigned int words_len; /* for output estimation */
+
+  /* Chop ARGV[0] up into patterns to match against the words. */
+  /** @todo this very inefficient as we convert between two list format and
+   *        duplicates the patterns on the heap.  We could just modify argv[0]
+   *        directly. */
+  patchain = helper_parse_file_list (argv[0], style, 0 /*glob*/);
+  pattail = &pathead;
+  for (cur = patchain, literals = 0; cur; cur = cur->next)
+    {
+      struct a_pattern *pat = alloca (sizeof (struct a_pattern));
+
+      *pattail = pat;
+      pattail = &pat->next;
+
+      pat->str = (char *)cur->name; /* (safe - PARSEFS_NOCACHE) */
+      pat->percent = find_percent (pat->str); /* may modify name */
+      if (pat->percent == 0)
+        literals++;
+      pat->sfxlen = pat->percent ? strlen(pat->percent + 1) : 0;
+      pat->length = strlen (pat->str);
+    }
+  *pattail = NULL;
+
+  /* Chop ARGV[1] up into words to match against the patterns.  */
+  /** @todo this very inefficient as we convert between two list format and
+   *        duplicates the words on the heap.  We could just modify argv[1]
+   *        directly. */
+  wordchain = helper_parse_file_list (argv[1], style, 0 /*glob*/);
+  wordtail = &wordhead;
+  for (cur = wordchain, words = 0, words_len = 0; cur; cur = cur->next)
+    {
+      struct a_word *word = alloca (sizeof (struct a_word));
+
+      *wordtail = word;
+      wordtail = &word->next;
+
+      word->str = (char *)cur->name; /* (safe - PARSEFS_NOCACHE) */
+      word->length = strlen (cur->name);
+      words_len += word->length + 1;
+      word->matched = 0;
+      word->chain = NULL;
+      words++;
+    }
+  *wordtail = NULL;
+
+  /* Only use a hash table if arg list lengths justifies the cost.  */
+  hashing = (literals >= 2 && (literals * words) >= 10);
+  if (hashing)
+    {
+      hash_init (&a_word_table, words, a_word_hash_1, a_word_hash_2,
+                 a_word_hash_cmp);
+      for (wp = wordhead; wp != 0; wp = wp->next)
+        {
+          struct a_word *owp = hash_insert (&a_word_table, wp);
+          if (owp)
+            wp->chain = owp;
+        }
+    }
+
+  if (words)
+    {
+      int doneany = 0;
+
+      if (is_filter)
+        words_len = 0;
+
+      /* Run each pattern through the words, killing words.  */
+      for (pp = pathead; pp != 0; pp = pp->next)
+        {
+          if (pp->percent)
+            {
+              for (wp = wordhead; wp != 0; wp = wp->next)
+                if (!wp->matched
+                    && pattern_matches_ex (pp->str, pp->percent, pp->sfxlen,
+                                           wp->str, wp->length))
+                  {
+                    wp->matched = 1;
+                    if (is_filter)
+                      words_len += wp->length + 1;
+                    else
+                      words_len -= wp->length + 1;
+                  }
+            }
+          else if (hashing)
+            {
+              struct a_word a_word_key;
+              a_word_key.str = pp->str;
+              a_word_key.length = pp->length;
+              wp = hash_find_item (&a_word_table, &a_word_key);
+              while (wp)
+                {
+                  if (!wp->matched)
+                    {
+                      wp->matched = 1;
+                      if (is_filter)
+                        words_len += wp->length + 1;
+                      else
+                        words_len -= wp->length + 1;
+                    }
+                  wp = wp->chain;
+                }
+            }
+          else
+            for (wp = wordhead; wp != 0; wp = wp->next)
+              if (!wp->matched
+                  && wp->length == pp->length
+                  && strneq (pp->str, wp->str, wp->length))
+                {
+                  wp->matched = 1;
+                  if (is_filter)
+                    words_len += wp->length + 1;
+                  else
+                    words_len -= wp->length + 1;
+                }
+        }
+
+      /* Output the words that matched (or didn't, for filter-out).  */
+      o = ensure_variable_buffer_space (o, words_len);
+
+      for (wp = wordhead; wp != 0; wp = wp->next)
+        if (wp->matched == is_filter)
+          {
+            o = helper_return_file_len (o, wp->str, wp->length,
+                                        style, 0 /*is_last*/);
+            doneany = 1;
+          }
+
+      /* Kill the last separator. */
+      if (doneany)
+        o = helper_drop_separator (o, style);
+    }
+
+  /* Clean up. */
+  if (hashing)
+    hash_free (&a_word_table, 0);
+  free_ns_chain_no_strcache (wordchain);
+  free_ns_chain_no_strcache (patchain);
+
+  return o;
+}
+
+/* Implements $(qfilter ) and $(qfilter-out ). */
+static char *
+func_q_filter_filterout (char *o, char **argv, const char *funcname)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  return worker_filter_filterout (o, &argv[1], style, funcname[7] == '\0');
+}
+
+#endif /* KMK */
+
+#ifdef CONFIG_WITH_LAZY_DEPS_VARS
+
+/* Helper that parses the index argument for the $(deps* ) and $(qdeps* )
+   functions. */
+static unsigned int parse_dep_index (const char *index, const char *funcname)
+{
+  unsigned int idx = 0;
+  if (index)
+    {
+      while (ISSPACE (*index))
+        index++;
+      if (*index != '\0')
+        {
+          char *next = (char *)index;
+          long l = strtol (index, &next, 0);
+          while (ISSPACE (*next))
+            next++;
+          idx = (unsigned int)l;
+          if (*next != '\0' || l < 0 || (long)idx != l)
+            OSS (fatal, NILF, _("%s: invalid index value: `%s'\n"), funcname, index);
+        }
+    }
+  return idx;
+}
+
+/* Helper that calculates the output length for a dependency */
+
+MY_INLINE unsigned int helper_dep_output_len (struct dep *d)
+{
+  const char *c = dep_name (d);
+#ifndef NO_ARCHIVES
+  if (ar_name (c))
+    return strlen (strchr (c, '(') + 1);
+#endif
+#ifdef CONFIG_WITH_STRCACHE2
+  if (!d->need_2nd_expansion)
+    return strcache2_get_len (&file_strcache, c) + 1;
+#endif
+  return strlen (c) + 1;
+}
+
+/* Helper that outputs a depndency. */
+
+MY_INLINE char *helper_dep_output_one (char *o, struct dep *d,
+                                       unsigned int style, int is_last)
+{
+  const char *c = dep_name (d);
+#ifndef NO_ARCHIVES
+  if (ar_name (c))
+    {
+      c = strchr(c, '(') + 1;
+      o = helper_return_file_len (o, c, strlen(c) - 1, style, is_last);
+    }
+  else
+#endif
+#ifdef CONFIG_WITH_STRCACHE2
+  if (!d->need_2nd_expansion)
+    {
+      unsigned int len = strcache2_get_len (&file_strcache, c);
+      o = helper_return_file_len (o, c, len, style, is_last);
+    }
+  else
+#endif
+    o = helper_return_file (o, c, style, is_last);
+  return o;
+}
+
+/* Implements $^/$(deps )/$(qdeps ) and $+/$(deps-all )/$(qdeps-all ).
+
+   If no second argument is given, or if it's empty, or if it's zero,
+   all dependencies will be returned.  If the second argument is non-zero
+   the dependency at that position will be returned.  If the argument is
+   negative a fatal error is thrown.  */
+static char *
+worker_deps (char *o, char **argv, const char *funcname, unsigned int style,
+             int all_deps)
+{
+  unsigned int idx = parse_dep_index (argv[1], funcname);
+  struct file *file;
+
+  /* Find the file and select the list corresponding to FUNCNAME. */
+
+  file = lookup_file (argv[0]);
+  if (file)
+    {
+      struct dep *deps;
+      struct dep *d;
+      if (!all_deps)
+        {
+          deps = file->deps_no_dupes;
+          if (!deps && file->deps)
+            deps = file->deps_no_dupes = create_uniqute_deps_chain (file->deps);
+        }
+      else
+        deps = file->deps;
+
+      if (   file->double_colon
+          && (   file->double_colon != file
+              || file->last != file))
+          OSS (error, NILF, _("$(%s ) cannot be used on files with multiple double colon rules like `%s'\n"),
+               funcname, file->name);
+
+      if (idx == 0 /* all */)
+        {
+          /* Since this may be a long list, calculate the output space needed if
+             no quoting takes place and no multichar separators are used. */
+
+          unsigned int total_len = 0;
+          for (d = deps; d; d = d->next)
+            if (!d->ignore_mtime)
+              total_len += helper_dep_output_len (d);
+          if (total_len > 0)
+            {
+              o = ensure_variable_buffer_space (o, total_len);
+
+              for (d = deps; d; d = d->next)
+                if (!d->ignore_mtime)
+                  o = helper_dep_output_one (o, d, style, 0 /*is_last*/);
+
+              /* nuke the last list separator */
+              o = helper_drop_separator (o, style);
+            }
+        }
+      else
+        {
+          /* Dependency given by index.  */
+
+          for (d = deps; d; d = d->next)
+            if (!d->ignore_mtime)
+              if (--idx == 0) /* 1 based indexing */
+                return helper_dep_output_one (o, d, style, 1 /*is_last*/);
+        }
+    }
+
+  return o;
+}
+
+/* Implements $? / $(deps-newer ) / $(qdeps-newer ).
+
+   If no second argument is given, or if it's empty, or if it's zero,
+   all dependencies will be returned.  If the second argument is non-zero
+   the dependency at that position will be returned.  If the argument is
+   negative a fatal error is thrown.  */
+static char *
+worker_deps_newer (char *o, char **argv, const char *funcname, unsigned int style)
+{
+  unsigned int idx = parse_dep_index (argv[1], funcname);
+  struct file *file;
+
+  /* Find the file. */
+
+  file = lookup_file (argv[0]);
+  if (file)
+    {
+      struct dep *deps = file->deps;
+      struct dep *d;
+
+      if (   file->double_colon
+          && (   file->double_colon != file
+              || file->last != file))
+          OSS (error, NILF, _("$(%s ) cannot be used on files with multiple double colon rules like `%s'\n"),
+               funcname, file->name);
+
+      if (idx == 0 /* all */)
+        {
+          unsigned int total_len = 0;
+
+          /* calc the result length. */
+
+          for (d = deps; d; d = d->next)
+            if (!d->ignore_mtime && d->changed)
+              total_len += helper_dep_output_len (d);
+          if (total_len)
+            {
+              o = ensure_variable_buffer_space (o, total_len);
+
+              for (d = deps; d; d = d->next)
+                if (!d->ignore_mtime && d->changed)
+                  o = helper_dep_output_one (o, d, style, 0 /*is_last*/);
+
+              /* nuke the last list separator */
+              o = helper_drop_separator (o, style);
+            }
+        }
+      else
+        {
+          /* Dependency given by index.  */
+
+          for (d = deps; d; d = d->next)
+            if (!d->ignore_mtime && d->changed)
+              if (--idx == 0) /* 1 based indexing */
+                return helper_dep_output_one (o, d, style, 1 /*is_last*/);
+        }
+    }
+
+  return o;
+}
+
+/* Implements $|, the order only dependency list.
+
+   If no second argument is given, or if it's empty, or if it's zero,
+   all dependencies will be returned.  If the second argument is non-zero
+   the dependency at that position will be returned.  If the argument is
+   negative a fatal error is thrown.  */
+static char *
+worker_deps_order_only (char *o, char **argv, const char *funcname, unsigned int style)
+{
+  unsigned int idx = parse_dep_index (argv[1], funcname);
+  struct file *file;
+
+  /* Find the file. */
+
+  file = lookup_file (argv[0]);
+  if (file)
+    {
+      struct dep *deps = file->deps;
+      struct dep *d;
+
+      if (   file->double_colon
+          && (   file->double_colon != file
+              || file->last != file))
+          OSS (error, NILF, _("$(%s ) cannot be used on files with multiple double colon rules like `%s'\n"),
+               funcname, file->name);
+
+      if (idx == 0 /* all */)
+        {
+          unsigned int total_len = 0;
+
+          /* calc the result length. */
+
+          for (d = deps; d; d = d->next)
+            if (d->ignore_mtime)
+              total_len += helper_dep_output_len (d);
+          if (total_len)
+            {
+              o = ensure_variable_buffer_space (o, total_len);
+
+              for (d = deps; d; d = d->next)
+                if (d->ignore_mtime)
+                  o = helper_dep_output_one (o, d, style, 0 /*is_last*/);
+
+              /* nuke the last list separator */
+              o = helper_drop_separator (o, style);
+            }
+        }
+      else
+        {
+          /* Dependency given by index.  */
+
+          for (d = deps; d; d = d->next)
+            if (d->ignore_mtime)
+              if (--idx == 0) /* 1 based indexing */
+                return helper_dep_output_one (o, d, style, 1 /*is_last*/);
+        }
+    }
+
+  return o;
+}
+
+/* Implements $^ and $+.
+
+   The first comes with FUNCNAME 'deps', the second as 'deps-all'.
+
+   If no second argument is given, or if it's empty, or if it's zero,
+   all dependencies will be returned.  If the second argument is non-zero
+   the dependency at that position will be returned.  If the argument is
+   negative a fatal error is thrown.  */
+static char *
+func_deps (char *o, char **argv, const char *funcname)
+{
+# ifdef VMS
+  return worker_deps (o, argv, funcname, Q_RET_UNQUOTED | Q_SEP_COMMA,
+# else
+  return worker_deps (o, argv, funcname, Q_RET_UNQUOTED | Q_SEP_SPACE,
+# endif
+                      funcname[4] != '\0');
+}
+
+/* Implements $?.
+
+   If no second argument is given, or if it's empty, or if it's zero,
+   all dependencies will be returned.  If the second argument is non-zero
+   the dependency at that position will be returned.  If the argument is
+   negative a fatal error is thrown.  */
+static char *
+func_deps_newer (char *o, char **argv, const char *funcname)
+{
+# ifdef VMS
+  return worker_deps_newer (o, argv, funcname, Q_RET_UNQUOTED | Q_SEP_COMMA);
+# else
+  return worker_deps_newer (o, argv, funcname, Q_RET_UNQUOTED | Q_SEP_SPACE);
+# endif
+}
+
+/* Implements $|, the order only dependency list.
+
+   If no second argument is given, or if it's empty, or if it's zero,
+   all dependencies will be returned.  If the second argument is non-zero
+   the dependency at that position will be returned.  If the argument is
+   negative a fatal error is thrown.  */
+static char *
+func_deps_order_only (char *o, char **argv, const char *funcname)
+{
+# ifdef VMS
+  return worker_deps_order_only (o, argv, funcname, Q_RET_UNQUOTED | Q_SEP_COMMA);
+# else
+  return worker_deps_order_only (o, argv, funcname, Q_RET_UNQUOTED | Q_SEP_SPACE);
+# endif
+}
+
+#endif /* CONFIG_WITH_LAZY_DEPS_VARS */
+#ifdef KMK
+
+/* Implements $(qdeps ) and $(qdeps-all )
+
+   If no third argument is given, or if it's empty, or if it's zero,
+   all dependencies will be returned.  If the third argument is non-zero
+   the dependency at that position will be returned.  If the argument is
+   negative a fatal error is thrown.  */
+static char *
+func_q_deps (char *o, char **argv, const char *funcname)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  return worker_deps (o, &argv[1], funcname, style, funcname[5] != '\0');
+}
+
+/* Implements $(qdeps-newer ).
+
+   If no third argument is given, or if it's empty, or if it's zero,
+   all dependencies will be returned.  If the third argument is non-zero
+   the dependency at that position will be returned.  If the argument is
+   negative a fatal error is thrown.  */
+static char *
+func_q_deps_newer (char *o, char **argv, const char *funcname)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  return worker_deps_newer (o, &argv[1], funcname, style);
+}
+
+/* Implements $(qdeps-oo ), the order only dependency list.
+
+   If no third argument is given, or if it's empty, or if it's zero,
+   all dependencies will be returned.  If the third argument is non-zero
+   the dependency at that position will be returned.  If the argument is
+   negative a fatal error is thrown.  */
+static char *
+func_q_deps_order_only (char *o, char **argv, const char *funcname)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  return worker_deps_order_only (o, &argv[1], funcname, style);
+}
+
+/* Implements $(qtarget ), converting a single unquoted file to the given
+   quoting style.
+
+   Typically used like this:
+      $(qtarget sh,$@)
+      $(qone-unquoted sh,$@) */
+static char *
+func_q_one_unquoted (char *o, char **argv, const char *funcname)
+{
+  unsigned int const style = helper_file_quoting_style (argv[0], Q_QDEFAULT);
+  return helper_return_file (o, argv[1], style, 1 /*is_last*/);
+}
+
+#endif /* KMK */
+
+/* Lookup table for builtin functions.
+
+   This doesn't have to be sorted; we use a straight lookup.  We might gain
+   some efficiency by moving most often used functions to the start of the
+   table.
+
+   If MAXIMUM_ARGS is 0, that means there is no maximum and all
+   comma-separated values are treated as arguments.
+
+   EXPAND_ARGS means that all arguments should be expanded before invocation.
+   Functions that do namespace tricks (foreach) don't automatically expand.  */
+
+static char *func_call (char *o, char **argv, const char *funcname);
+
+#define FT_ENTRY(_name, _min, _max, _exp, _func) \
+  { { (_func) }, STRING_SIZE_TUPLE(_name), (_min), (_max), (_exp), 0 }
+
+static struct function_table_entry function_table_init[] =
+{
+ /*         Name            MIN MAX EXP? Function */
+  FT_ENTRY ("abspath",       0,  1,  1,  func_abspath),
+  FT_ENTRY ("addprefix",     2,  2,  1,  func_addsuffix_addprefix),
+  FT_ENTRY ("addsuffix",     2,  2,  1,  func_addsuffix_addprefix),
+  FT_ENTRY ("basename",      0,  1,  1,  func_basename_dir),
+  FT_ENTRY ("dir",           0,  1,  1,  func_basename_dir),
+  FT_ENTRY ("notdir",        0,  1,  1,  func_notdir_suffix),
+#ifdef CONFIG_WITH_ROOT_FUNC
+  FT_ENTRY ("root",          0,  1,  1,  func_root),
+  FT_ENTRY ("notroot",       0,  1,  1,  func_notroot),
+#endif
+  FT_ENTRY ("subst",         3,  3,  1,  func_subst),
+  FT_ENTRY ("suffix",        0,  1,  1,  func_notdir_suffix),
+  FT_ENTRY ("filter",        2,  2,  1,  func_filter_filterout),
+  FT_ENTRY ("filter-out",    2,  2,  1,  func_filter_filterout),
+  FT_ENTRY ("findstring",    2,  2,  1,  func_findstring),
+#ifdef CONFIG_WITH_DEFINED_FUNCTIONS
+  FT_ENTRY ("firstdefined",  0,  2,  1,  func_firstdefined),
+#endif
+  FT_ENTRY ("firstword",     0,  1,  1,  func_firstword),
+  FT_ENTRY ("flavor",        0,  1,  1,  func_flavor),
+  FT_ENTRY ("join",          2,  2,  1,  func_join),
+#ifdef CONFIG_WITH_DEFINED_FUNCTIONS
+  FT_ENTRY ("lastdefined",   0,  2,  1,  func_lastdefined),
+#endif
+  FT_ENTRY ("lastword",      0,  1,  1,  func_lastword),
+  FT_ENTRY ("patsubst",      3,  3,  1,  func_patsubst),
+  FT_ENTRY ("realpath",      0,  1,  1,  func_realpath),
+#ifdef CONFIG_WITH_RSORT
+  FT_ENTRY ("rsort",         0,  1,  1,  func_sort),
+# ifdef KMK
+  FT_ENTRY ("rversort",      0,  1,  1,  func_sort),
+# endif
+#endif
+  FT_ENTRY ("shell",         0,  1,  1,  func_shell),
+  FT_ENTRY ("sort",          0,  1,  1,  func_sort),
+# ifdef KMK
+  FT_ENTRY ("versort",       0,  1,  1,  func_sort),
+# endif
+  FT_ENTRY ("strip",         0,  1,  1,  func_strip),
+#ifdef CONFIG_WITH_WHERE_FUNCTION
+  FT_ENTRY ("where",         0,  1,  1,  func_where),
+#endif
+  FT_ENTRY ("wildcard",      0,  1,  1,  func_wildcard),
+  FT_ENTRY ("word",          2,  2,  1,  func_word),
+  FT_ENTRY ("wordlist",      3,  3,  1,  func_wordlist),
+  FT_ENTRY ("words",         0,  1,  1,  func_words),
+  FT_ENTRY ("origin",        0,  1,  1,  func_origin),
+  FT_ENTRY ("foreach",       3,  3,  0,  func_foreach),
+#ifdef CONFIG_WITH_LOOP_FUNCTIONS
+  FT_ENTRY ("for",           4,  4,  0,  func_for),
+  FT_ENTRY ("while",         2,  2,  0,  func_while),
+#endif
+  FT_ENTRY ("call",          1,  0,  1,  func_call),
+  FT_ENTRY ("info",          0,  1,  1,  func_error),
+  FT_ENTRY ("error",         0,  1,  1,  func_error),
+  FT_ENTRY ("warning",       0,  1,  1,  func_error),
+  FT_ENTRY ("if",            2,  3,  0,  func_if),
+  FT_ENTRY ("or",            1,  0,  0,  func_or),
+  FT_ENTRY ("and",           1,  0,  0,  func_and),
+  FT_ENTRY ("value",         0,  1,  1,  func_value),
+#ifdef EXPERIMENTAL
+  FT_ENTRY ("eq",            2,  2,  1,  func_eq),
+  FT_ENTRY ("not",           0,  1,  1,  func_not),
+#endif
+  FT_ENTRY ("eval",          0,  1,  1,  func_eval),
+#ifdef CONFIG_WITH_EVALPLUS
+  FT_ENTRY ("evalctx",       0,  1,  1,  func_evalctx),
+  FT_ENTRY ("evalval",       1,  1,  1,  func_evalval),
+  FT_ENTRY ("evalvalctx",    1,  1,  1,  func_evalval),
+  FT_ENTRY ("evalcall",      1,  0,  1,  func_call),
+  FT_ENTRY ("evalcall2",     1,  0,  1,  func_call),
+  FT_ENTRY ("eval-opt-var",  1,  0,  1,  func_eval_optimize_variable),
+#endif
+  FT_ENTRY ("file",          1,  2,  1,  func_file),
+#ifdef CONFIG_WITH_STRING_FUNCTIONS
+  FT_ENTRY ("length",        1,  1,  1,  func_length),
+  FT_ENTRY ("length-var",    1,  1,  1,  func_length_var),
+  FT_ENTRY ("insert",        2,  5,  1,  func_insert),
+  FT_ENTRY ("pos",           2,  3,  1,  func_pos),
+  FT_ENTRY ("lastpos",       2,  3,  1,  func_pos),
+  FT_ENTRY ("substr",        2,  4,  1,  func_substr),
+  FT_ENTRY ("translate",     2,  4,  1,  func_translate),
+#endif
+#ifdef CONFIG_WITH_PRINTF
+  FT_ENTRY ("printf",        1,  0,  1,  kmk_builtin_func_printf),
+#endif
+#ifdef CONFIG_WITH_LAZY_DEPS_VARS
+  FT_ENTRY ("deps",          1,  2,  1,  func_deps),
+  FT_ENTRY ("deps-all",      1,  2,  1,  func_deps),
+  FT_ENTRY ("deps-newer",    1,  2,  1,  func_deps_newer),
+  FT_ENTRY ("deps-oo",       1,  2,  1,  func_deps_order_only),
+#endif
+#ifdef CONFIG_WITH_DEFINED
+  FT_ENTRY ("defined",       1,  1,  1,  func_defined),
+#endif
+#ifdef CONFIG_WITH_TOUPPER_TOLOWER
+  FT_ENTRY ("toupper",       0,  1,  1,  func_toupper_tolower),
+  FT_ENTRY ("tolower",       0,  1,  1,  func_toupper_tolower),
+#endif
+#ifdef CONFIG_WITH_ABSPATHEX
+  FT_ENTRY ("abspathex",     0,  2,  1,  func_abspathex),
+#endif
+#ifdef CONFIG_WITH_XARGS
+  FT_ENTRY ("xargs",         2,  0,  1,  func_xargs),
+#endif
+#if defined(CONFIG_WITH_VALUE_LENGTH) && defined(CONFIG_WITH_COMPARE)
+  FT_ENTRY ("comp-vars",     3,  3,  1,  func_comp_vars),
+  FT_ENTRY ("comp-cmds",     3,  3,  1,  func_comp_vars),
+  FT_ENTRY ("comp-cmds-ex",  3,  3,  1,  func_comp_cmds_ex),
+#endif
+#ifdef CONFIG_WITH_DATE
+  FT_ENTRY ("date",          0,  1,  1,  func_date),
+  FT_ENTRY ("date-utc",      0,  3,  1,  func_date),
+#endif
+#ifdef CONFIG_WITH_FILE_SIZE
+  FT_ENTRY ("file-size",     1,  1,  1,  func_file_size),
+#endif
+#ifdef CONFIG_WITH_WHICH
+  FT_ENTRY ("which",         0,  0,  1,  func_which),
+#endif
+#ifdef CONFIG_WITH_IF_CONDITIONALS
+  FT_ENTRY ("expr",          1,  1,  0,  func_expr),
+  FT_ENTRY ("if-expr",       2,  3,  0,  func_if_expr),
+  FT_ENTRY ("select",        2,  0,  0,  func_select),
+#endif
+#ifdef CONFIG_WITH_SET_CONDITIONALS
+  FT_ENTRY ("intersects",    2,  2,  1,  func_set_intersects),
+#endif
+#ifdef CONFIG_WITH_STACK
+  FT_ENTRY ("stack-push",    2,  2,  1,  func_stack_push),
+  FT_ENTRY ("stack-pop",     1,  1,  1,  func_stack_pop_top),
+  FT_ENTRY ("stack-popv",    1,  1,  1,  func_stack_pop_top),
+  FT_ENTRY ("stack-top",     1,  1,  1,  func_stack_pop_top),
+#endif
+#ifdef CONFIG_WITH_MATH
+  FT_ENTRY ("int-add",       2,  0,  1,  func_int_add),
+  FT_ENTRY ("int-sub",       2,  0,  1,  func_int_sub),
+  FT_ENTRY ("int-mul",       2,  0,  1,  func_int_mul),
+  FT_ENTRY ("int-div",       2,  0,  1,  func_int_div),
+  FT_ENTRY ("int-mod",       2,  2,  1,  func_int_mod),
+  FT_ENTRY ("int-not",       1,  1,  1,  func_int_not),
+  FT_ENTRY ("int-and",       2,  0,  1,  func_int_and),
+  FT_ENTRY ("int-or",        2,  0,  1,  func_int_or),
+  FT_ENTRY ("int-xor",       2,  0,  1,  func_int_xor),
+  FT_ENTRY ("int-eq",        2,  2,  1,  func_int_cmp),
+  FT_ENTRY ("int-ne",        2,  2,  1,  func_int_cmp),
+  FT_ENTRY ("int-gt",        2,  2,  1,  func_int_cmp),
+  FT_ENTRY ("int-ge",        2,  2,  1,  func_int_cmp),
+  FT_ENTRY ("int-lt",        2,  2,  1,  func_int_cmp),
+  FT_ENTRY ("int-le",        2,  2,  1,  func_int_cmp),
+#endif
+#ifdef CONFIG_WITH_NANOTS
+  FT_ENTRY ("nanots",        0,  0,  0,  func_nanots),
+#endif
+#ifdef CONFIG_WITH_OS2_LIBPATH
+  FT_ENTRY ("libpath",       1,  2,  1,  func_os2_libpath),
+#endif
+#if defined (CONFIG_WITH_MAKE_STATS) || defined (CONFIG_WITH_MINIMAL_STATS)
+  FT_ENTRY ("make-stats",    0,  0,  0,  func_make_stats),
+#endif
+#ifdef CONFIG_WITH_COMMANDS_FUNC
+  FT_ENTRY ("commands",      1,  1,  1,  func_commands),
+  FT_ENTRY ("commands-sc",   1,  1,  1,  func_commands),
+  FT_ENTRY ("commands-usr",  2,  2,  1,  func_commands),
+#endif
+#ifdef KMK_HELPERS
+  FT_ENTRY ("kb-src-tool",   1,  2,  0,  func_kbuild_source_tool),
+  FT_ENTRY ("kb-obj-base",   1,  2,  0,  func_kbuild_object_base),
+  FT_ENTRY ("kb-obj-suff",   1,  2,  0,  func_kbuild_object_suffix),
+  FT_ENTRY ("kb-src-prop",   3,  4,  0,  func_kbuild_source_prop),
+  FT_ENTRY ("kb-src-one",    0,  1,  0,  func_kbuild_source_one),
+  FT_ENTRY ("kb-exp-tmpl",   6,  6,  1,  func_kbuild_expand_template),
+#endif
+#ifdef KMK
+  FT_ENTRY ("dircache-ctl",  1,  0,  1,  func_dircache_ctl),
+  FT_ENTRY ("breakpoint",    0,  0,  0,  func_breakpoint),
+  FT_ENTRY ("set-umask",     1,  3,  1,  func_set_umask),
+  FT_ENTRY ("get-umask",     0,  0,  0,  func_get_umask),
+#endif
+#ifdef KMK
+  FT_ENTRY ("quote",         1,  0,  1,  func_quote_make),
+  FT_ENTRY ("quote-dep",     1,  0,  1,  func_quote_make),
+  FT_ENTRY ("quote-tgt",     1,  0,  1,  func_quote_make),
+  FT_ENTRY ("quote-depend",  1,  0,  1,  func_quote_make),
+  FT_ENTRY ("quote-tgtend",  1,  0,  1,  func_quote_make),
+  FT_ENTRY ("quote-sh",      1,  0,  1,  func_quote_shell),
+  FT_ENTRY ("quote-sh-dq",   1,  1,  1,  func_quote_shell_dq),
+  FT_ENTRY ("quote-sh-sq",   1,  1,  1,  func_quote_shell_sq),
+  FT_ENTRY ("requote",       1,  0,  1,  func_requote),
+  /* Quoted input and maybe output variants of functions typically
+     working with files: */
+  FT_ENTRY ("firstfile",     0,  1, 1, func_firstfile),
+  FT_ENTRY ("lastfile",      0,  1, 1, func_lastfile),
+  FT_ENTRY ("filelist",      3,  3, 1, func_filelist),
+  FT_ENTRY ("countfiles",    0,  1, 1, func_countfiles),
+  FT_ENTRY ("foreachfile",   3,  3, 0, func_foreachfile),
+  FT_ENTRY ("sortfiles",     0,  1, 1, func_sortfiles),
+  FT_ENTRY ("versortfiles",  0,  1, 1, func_sortfiles),
+# ifdef CONFIG_WITH_RSORT
+  FT_ENTRY ("rsortfiles",    0,  1, 1, func_sortfiles),
+  FT_ENTRY ("rversortfiles", 0,  1, 1, func_sortfiles),
+# endif
+  /* Function variants with preceding style argument and quoting by default. */
+  FT_ENTRY ("qfirstfile",   1+0, 1+1, 1, func_q_firstfile),
+  FT_ENTRY ("qlastfile",    1+0, 1+1, 1, func_q_lastfile),
+  FT_ENTRY ("qfilelist",    1+3, 1+3, 1, func_q_filelist),
+  FT_ENTRY ("qcountfiles",  1+0, 1+1, 1, func_q_countfiles),
+  FT_ENTRY ("qforeachfile", 1+3, 1+3, 0, func_q_foreachfile),
+  FT_ENTRY ("qsortfiles",   1+0, 1+1, 1, func_q_sortfiles),
+  FT_ENTRY ("qversortfiles",1+0, 1+1, 1, func_q_sortfiles),
+# ifdef CONFIG_WITH_RSORT
+  FT_ENTRY ("qrsortfiles",  1+0, 1+1, 1, func_q_sortfiles),
+  FT_ENTRY ("qrversortfiles",1+0,1+1, 1, func_q_sortfiles),
+# endif
+  FT_ENTRY ("qabspath",     1+0, 1+1, 1, func_q_abspath),
+  FT_ENTRY ("qaddprefix",   1+2, 1+2, 1, func_q_addsuffix_addprefix),
+  FT_ENTRY ("qaddsuffix",   1+2, 1+2, 1, func_q_addsuffix_addprefix),
+  FT_ENTRY ("qbasename",    1+0, 1+1, 1, func_q_basename_dir),
+  FT_ENTRY ("qdir",         1+0, 1+1, 1, func_q_basename_dir),
+  FT_ENTRY ("qnotdir",      1+0, 1+1, 1, func_q_notdir),
+# ifdef CONFIG_WITH_ROOT_FUNC
+  FT_ENTRY ("qroot",        1+0, 1+1, 1, func_q_root),
+  FT_ENTRY ("qnotroot",     1+0, 1+1, 1, func_q_notroot),
+# endif
+  FT_ENTRY ("qsuffix",      1+0, 1+1, 1, func_q_suffix),
+  FT_ENTRY ("qrealpath",    1+0, 1+1, 1, func_q_realpath),
+# ifdef CONFIG_WITH_ABSPATHEX
+  FT_ENTRY ("qabspathex",   1+0, 1+2, 1, func_q_abspathex),
+# endif
+  FT_ENTRY ("qwildcard",    1+0, 1+1, 1, func_q_wildcard),
+  FT_ENTRY ("qone-unquoted",1+1, 1+1, 1, func_q_one_unquoted),
+  FT_ENTRY ("qtarget",      1+1, 1+1, 1, func_q_one_unquoted),    /* For requoting plain $@ to given style. */
+  FT_ENTRY ("qdeps",        1+1, 1+2, 1, func_q_deps),            /* $^ with quoting style */
+  FT_ENTRY ("qdeps-all",    1+1, 1+2, 1, func_q_deps),            /* $+ with quoting style */
+  FT_ENTRY ("qdeps-newer",  1+1, 1+2, 1, func_q_deps_newer),      /* $? with quoting style */
+  FT_ENTRY ("qdeps-oo",     1+1, 1+2, 1, func_q_deps_order_only), /* $| with quoting style */
+  FT_ENTRY ("qfilter",      1+2, 1+2, 1, func_q_filter_filterout),
+  FT_ENTRY ("qfilter-out",  1+2, 1+2, 1, func_q_filter_filterout),
+  /** @todo XXX: Add more qxxxx variants. */
+#endif
+};
+
+#define FUNCTION_TABLE_ENTRIES (sizeof (function_table_init) / sizeof (struct function_table_entry))
+
+
+/* These must come after the definition of function_table.  */
+
+static char *
+expand_builtin_function (char *o, int argc, char **argv,
+                         const struct function_table_entry *entry_p)
+{
+  char *p;
+
+  if (argc < (int)entry_p->minimum_args)
+    fatal (*expanding_var, strlen (entry_p->name),
+           _("insufficient number of arguments (%d) to function '%s'"),
+           argc, entry_p->name);
+
+  /* I suppose technically some function could do something with no arguments,
+     but so far no internal ones do, so just test it for all functions here
+     rather than in each one.  We can change it later if necessary.  */
+
+  if (!argc && !entry_p->alloc_fn)
+    return o;
+
+  if (!entry_p->fptr.func_ptr)
+    OS (fatal, *expanding_var,
+        _("unimplemented on this platform: function '%s'"), entry_p->name);
+
+  if (!entry_p->alloc_fn)
+    return entry_p->fptr.func_ptr (o, argv, entry_p->name);
+
+  /* This function allocates memory and returns it to us.
+     Write it to the variable buffer, then free it.  */
+
+  p = entry_p->fptr.alloc_func_ptr (entry_p->name, argc, argv);
+  if (p)
+    {
+      o = variable_buffer_output (o, p, strlen (p));
+      free (p);
+    }
+
+  return o;
+}
+
+/* Check for a function invocation in *STRINGP.  *STRINGP points at the
+   opening ( or { and is not null-terminated.  If a function invocation
+   is found, expand it into the buffer at *OP, updating *OP, incrementing
+   *STRINGP past the reference and returning nonzero.  If not, return zero.  */
+
+static int
+handle_function2 (const struct function_table_entry *entry_p, char **op, const char **stringp) /* bird split it up. */
+{
+  char openparen = (*stringp)[0];
+  char closeparen = openparen == '(' ? ')' : '}';
+  const char *beg;
+  const char *end;
+  int count = 0;
+  char *abeg = NULL;
+  char **argv, **argvp;
+  int nargs;
+
+  beg = *stringp + 1;
+
+  /* We found a builtin function.  Find the beginning of its arguments (skip
+     whitespace after the name).  */
+
+  beg += entry_p->len;
+  NEXT_TOKEN (beg);
+
+  /* Find the end of the function invocation, counting nested use of
+     whichever kind of parens we use.  Since we're looking, count commas
+     to get a rough estimate of how many arguments we might have.  The
+     count might be high, but it'll never be low.  */
+
+  for (nargs=1, end=beg; *end != '\0'; ++end)
+    if (*end == ',')
+      ++nargs;
+    else if (*end == openparen)
+      ++count;
+    else if (*end == closeparen && --count < 0)
+      break;
+
+  if (count >= 0)
+    fatal (*expanding_var, strlen (entry_p->name),
+           _("unterminated call to function '%s': missing '%c'"),
+           entry_p->name, closeparen);
+
+  *stringp = end;
+
+  /* Get some memory to store the arg pointers.  */
+  argvp = argv = alloca (sizeof (char *) * (nargs + 2));
+
+  /* Chop the string into arguments, then a nul.  As soon as we hit
+     MAXIMUM_ARGS (if it's >0) assume the rest of the string is part of the
+     last argument.
+
+     If we're expanding, store pointers to the expansion of each one.  If
+     not, make a duplicate of the string and point into that, nul-terminating
+     each argument.  */
+
+  if (entry_p->expand_args)
+    {
+      const char *p;
+      for (p=beg, nargs=0; p <= end; ++argvp)
+        {
+          const char *next;
+
+          ++nargs;
+
+          if (nargs == entry_p->maximum_args
+              || (! (next = find_next_argument (openparen, closeparen, p, end))))
+            next = end;
+
+          *argvp = expand_argument (p, next);
+          p = next + 1;
+        }
+    }
+  else
+    {
+      int len = end - beg;
+      char *p, *aend;
+
+      abeg = xmalloc (len+1);
+      memcpy (abeg, beg, len);
+      abeg[len] = '\0';
+      aend = abeg + len;
+
+      for (p=abeg, nargs=0; p <= aend; ++argvp)
+        {
+          char *next;
+
+          ++nargs;
+
+          if (nargs == entry_p->maximum_args
+              || (! (next = find_next_argument (openparen, closeparen, p, aend))))
+            next = aend;
+
+          *argvp = p;
+          *next = '\0';
+          p = next + 1;
+        }
+    }
+  *argvp = NULL;
+
+  /* Finally!  Run the function...  */
+  *op = expand_builtin_function (*op, nargs, argv, entry_p);
+
+  /* Free memory.  */
+  if (entry_p->expand_args)
+    for (argvp=argv; *argvp != 0; ++argvp)
+      free (*argvp);
+  else
+    free (abeg);
+
+  return 1;
+}
+
+
+int  /* bird split it up and hacked it. */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+handle_function (char **op, const char **stringp)
+{
+  const struct function_table_entry *entry_p = lookup_function (*stringp + 1);
+  if (!entry_p)
+    return 0;
+  return handle_function2 (entry_p, op, stringp);
+}
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+handle_function (char **op, const char **stringp, const char *nameend, const char *eol UNUSED)
+{
+  const char *fname = *stringp + 1;
+  const struct function_table_entry *entry_p =
+      lookup_function_in_hash_tab (fname, nameend - fname);
+  if (!entry_p)
+    return 0;
+  return handle_function2 (entry_p, op, stringp);
+}
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+
+#ifdef CONFIG_WITH_COMPILER
+/* Used by the "compiler" to get all info about potential functions. */
+make_function_ptr_t
+lookup_function_for_compiler (const char *name, unsigned int len,
+                              unsigned char *minargsp, unsigned char *maxargsp,
+                              char *expargsp, const char **funcnamep)
+{
+  const struct function_table_entry *entry_p = lookup_function (name, len);
+  if (!entry_p)
+    return 0;
+  *minargsp  = entry_p->minimum_args;
+  *maxargsp  = entry_p->maximum_args;
+  *expargsp  = entry_p->expand_args;
+  *funcnamep = entry_p->name;
+  return entry_p->func_ptr;
+}
+#endif /* CONFIG_WITH_COMPILER */
+
+
+/* User-defined functions.  Expand the first argument as either a builtin
+   function or a make variable, in the context of the rest of the arguments
+   assigned to $1, $2, ... $N.  $0 is the name of the function.  */
+
+static char *
+func_call (char *o, char **argv, const char *funcname UNUSED)
+{
+  static int max_args = 0;
+  char *fname;
+  char *body;
+  int flen;
+  int i;
+  int saved_args;
+  const struct function_table_entry *entry_p;
+  struct variable *v;
+#ifdef CONFIG_WITH_EVALPLUS
+  char *buf;
+  unsigned int len;
+#endif
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  char *fname_end;
+#endif
+#if defined (CONFIG_WITH_EVALPLUS) || defined (CONFIG_WITH_VALUE_LENGTH)
+  char num[11];
+#endif
+
+  /* Clean up the name of the variable to be invoked.  */
+  fname = next_token (argv[0]);
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  end_of_token (fname)[0] = '\0';
+#else
+  fname_end = end_of_token (fname);
+  *fname_end = '\0';
+#endif
+
+  /* Calling nothing is a no-op */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  if (*fname == '\0')
+#else
+  if (fname == fname_end)
+#endif
+    return o;
+
+  /* Are we invoking a builtin function?  */
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  entry_p = lookup_function (fname);
+#else
+  entry_p = lookup_function (fname, fname_end - fname);
+#endif
+  if (entry_p)
+    {
+      /* How many arguments do we have?  */
+      for (i=0; argv[i+1]; ++i)
+        ;
+      return expand_builtin_function (o, i, argv+1, entry_p);
+    }
+
+  /* Not a builtin, so the first argument is the name of a variable to be
+     expanded and interpreted as a function.  Find it.  */
+  flen = strlen (fname);
+
+  v = lookup_variable (fname, flen);
+
+  if (v == 0)
+    warn_undefined (fname, flen);
+
+  if (v == 0 || *v->value == '\0')
+    return o;
+
+  body = alloca (flen + 4);
+  body[0] = '$';
+  body[1] = '(';
+  memcpy (body + 2, fname, flen);
+  body[flen+2] = ')';
+  body[flen+3] = '\0';
+
+  /* Set up arguments $(1) .. $(N).  $(0) is the function name.  */
+
+  push_new_variable_scope ();
+
+  for (i=0; *argv; ++i, ++argv)
+#ifdef CONFIG_WITH_VALUE_LENGTH
+    define_variable (num, sprintf (num, "%d", i), *argv, o_automatic, 0);
+#else
+    {
+      char num[11];
+
+      sprintf (num, "%d", i);
+      define_variable (num, strlen (num), *argv, o_automatic, 0);
+    }
+#endif
+
+#ifdef CONFIG_WITH_EVALPLUS
+  /* $(.ARGC) is the argument count. */
+
+  len = sprintf (num, "%d", i - 1);
+  define_variable_vl (".ARGC", sizeof (".ARGC") - 1, num, len,
+                      1 /* dup val */, o_automatic, 0);
+#endif
+
+  /* If the number of arguments we have is < max_args, it means we're inside
+     a recursive invocation of $(call ...).  Fill in the remaining arguments
+     in the new scope with the empty value, to hide them from this
+     invocation.  */
+
+  for (; i < max_args; ++i)
+#ifdef CONFIG_WITH_VALUE_LENGTH
+    define_variable (num, sprintf (num, "%d", i), "", o_automatic, 0);
+#else
+    {
+      char num[11];
+
+      sprintf (num, "%d", i);
+      define_variable (num, strlen (num), "", o_automatic, 0);
+    }
+#endif
+
+  saved_args = max_args;
+  max_args = i;
+
+#ifdef CONFIG_WITH_EVALPLUS
+  if (!strcmp (funcname, "call"))
+    {
+#endif
+      /* Expand the body in the context of the arguments, adding the result to
+         the variable buffer.  */
+
+      v->exp_count = EXP_COUNT_MAX;
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      o = variable_expand_string (o, body, flen+3);
+      v->exp_count = 0;
+
+      o += strlen (o);
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+      variable_expand_string_2 (o, body, flen+3, &o);
+      v->exp_count = 0;
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+#ifdef CONFIG_WITH_EVALPLUS
+    }
+  else
+    {
+      const floc *reading_file_saved = reading_file;
+      char *eos;
+
+      if (!strcmp (funcname, "evalcall"))
+        {
+          /* Evaluate the variable value without expanding it. We
+             need a copy since eval_buffer is destructive.  */
+
+          size_t off = o - variable_buffer;
+          eos = variable_buffer_output (o, v->value, v->value_length + 1) - 1;
+          o = variable_buffer + off;
+          if (v->fileinfo.filenm)
+            reading_file = &v->fileinfo;
+        }
+      else
+        {
+          /* Expand the body first and then evaluate the output. */
+
+          v->exp_count = EXP_COUNT_MAX;
+          o = variable_expand_string_2 (o, body, flen+3, &eos);
+          v->exp_count = 0;
+        }
+
+      install_variable_buffer (&buf, &len);
+      eval_buffer (o, NULL, eos);
+      restore_variable_buffer (buf, len);
+      reading_file = reading_file_saved;
+
+      /* Deal with the .RETURN value if present. */
+
+      v = lookup_variable_in_set (".RETURN", sizeof (".RETURN") - 1,
+                                  current_variable_set_list->set);
+      if (v && v->value_length)
+        {
+          if (v->recursive && !IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR (v))
+            {
+              v->exp_count = EXP_COUNT_MAX;
+              variable_expand_string_2 (o, v->value, v->value_length, &o);
+              v->exp_count = 0;
+            }
+          else
+            o = variable_buffer_output (o, v->value, v->value_length);
+        }
+    }
+#endif /* CONFIG_WITH_EVALPLUS */
+
+  max_args = saved_args;
+
+  pop_variable_scope ();
+
+  return o;
+}
+
+void
+define_new_function (const floc *flocp, const char *name,
+                     unsigned int min, unsigned int max, unsigned int flags,
+                     gmk_func_ptr func)
+{
+  const char *e = name;
+  struct function_table_entry *ent;
+  size_t len;
+
+  while (STOP_SET (*e, MAP_USERFUNC))
+    e++;
+  len = e - name;
+
+  if (len == 0)
+    O (fatal, flocp, _("Empty function name"));
+  if (*name == '.' || *e != '\0')
+    OS (fatal, flocp, _("Invalid function name: %s"), name);
+  if (len > 255)
+    OS (fatal, flocp, _("Function name too long: %s"), name);
+  if (min > 255)
+    ONS (fatal, flocp,
+         _("Invalid minimum argument count (%u) for function %s"), min, name);
+  if (max > 255 || (max && max < min))
+    ONS (fatal, flocp,
+         _("Invalid maximum argument count (%u) for function %s"), max, name);
+
+  ent = xmalloc (sizeof (struct function_table_entry));
+  ent->name = name;
+  ent->len = len;
+  ent->minimum_args = min;
+  ent->maximum_args = max;
+  ent->expand_args = ANY_SET(flags, GMK_FUNC_NOEXPAND) ? 0 : 1;
+  ent->alloc_fn = 1;
+  ent->fptr.alloc_func_ptr = func;
+
+  hash_insert (&function_table, ent);
+}
+
+void
+hash_init_function_table (void)
+{
+  hash_init (&function_table, FUNCTION_TABLE_ENTRIES * 2,
+             function_table_entry_hash_1, function_table_entry_hash_2,
+             function_table_entry_hash_cmp);
+  hash_load (&function_table, function_table_init,
+             FUNCTION_TABLE_ENTRIES, sizeof (struct function_table_entry));
+#if defined (CONFIG_WITH_OPTIMIZATION_HACKS) || defined (CONFIG_WITH_VALUE_LENGTH)
+  {
+    unsigned int i;
+    for (i = 0; i < FUNCTION_TABLE_ENTRIES; i++)
+      {
+        const char *fn = function_table_init[i].name;
+        while (*fn)
+          {
+            func_char_map[(int)*fn] = 1;
+            fn++;
+          }
+        assert (function_table_init[i].len <= MAX_FUNCTION_LENGTH);
+        assert (function_table_init[i].len >= MIN_FUNCTION_LENGTH);
+      }
+  }
+#endif
+}
diff --git a/src/kmk/getloadavg.c b/src/kmk/getloadavg.c
new file mode 100644
index 0000000..10ae56a
--- /dev/null
+++ b/src/kmk/getloadavg.c
@@ -0,0 +1,1026 @@
+/* Get the system load averages.
+Copyright (C) 1985-2016 Free Software Foundation, Inc.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Compile-time symbols that this file uses:
+
+   HAVE_PSTAT_GETDYNAMIC	Define this if your system has the
+                                pstat_getdynamic function.  I think it
+				is unique to HPUX9.  The best way to get the
+				definition is through the AC_FUNC_GETLOADAVG
+				macro that comes with autoconf 2.13 or newer.
+				If that isn't an option, then just put
+				AC_CHECK_FUNCS(pstat_getdynamic) in your
+				configure.in file.
+   FIXUP_KERNEL_SYMBOL_ADDR()	Adjust address in returned struct nlist.
+   KERNEL_FILE			Pathname of the kernel to nlist.
+   LDAV_CVT()			Scale the load average from the kernel.
+				Returns a double.
+   LDAV_SYMBOL			Name of kernel symbol giving load average.
+   LOAD_AVE_TYPE		Type of the load average array in the kernel.
+				Must be defined unless one of
+				apollo, DGUX, NeXT, or UMAX is defined;
+                                or we have libkstat;
+				otherwise, no load average is available.
+   NLIST_STRUCT			Include nlist.h, not a.out.h, and
+				the nlist n_name element is a pointer,
+				not an array.
+   HAVE_STRUCT_NLIST_N_UN_N_NAME struct nlist has an n_un member, not n_name.
+   LINUX_LDAV_FILE		[__linux__]: File containing load averages.
+
+   Specific system predefines this file uses, aside from setting
+   default values if not emacs:
+
+   apollo
+   BSD				Real BSD, not just BSD-like.
+   convex
+   DGUX
+   eunice			UNIX emulator under VMS.
+   hpux
+   __MSDOS__			No-op for MSDOS.
+   NeXT
+   sgi
+   sequent			Sequent Dynix 3.x.x (BSD)
+   _SEQUENT_			Sequent DYNIX/ptx 1.x.x (SYSV)
+   sony_news                    NEWS-OS (works at least for 4.1C)
+   UMAX
+   UMAX4_3
+   VMS
+   WINDOWS32			No-op for Windows95/NT.
+   __linux__			Linux: assumes /proc filesystem mounted.
+   				Support from Michael K. Johnson.
+   __NetBSD__			NetBSD: assumes /kern filesystem mounted.
+
+   In addition, to avoid nesting many #ifdefs, we internally set
+   LDAV_DONE to indicate that the load average has been computed.
+
+   We also #define LDAV_PRIVILEGED if a program will require
+   special installation to be able to call getloadavg.  */
+
+/* This should always be first.  */
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+
+/* Both the Emacs and non-Emacs sections want this.  Some
+   configuration files' definitions for the LOAD_AVE_CVT macro (like
+   sparc.h's) use macros like FSCALE, defined here.  */
+#if defined (unix) || defined (__unix)
+# include <sys/param.h>
+#endif
+
+
+/* Exclude all the code except the test program at the end
+   if the system has its own 'getloadavg' function.
+
+   The declaration of 'errno' is needed by the test program
+   as well as the function itself, so it comes first.  */
+
+#include <errno.h>
+
+#ifndef errno
+extern int errno;
+#endif
+
+#if HAVE_LOCALE_H
+# include <locale.h>
+#endif
+#if !HAVE_SETLOCALE
+# define setlocale(Category, Locale) /* empty */
+#endif
+
+#ifndef HAVE_GETLOADAVG
+
+
+/* The existing Emacs configuration files define a macro called
+   LOAD_AVE_CVT, which accepts a value of type LOAD_AVE_TYPE, and
+   returns the load average multiplied by 100.  What we actually want
+   is a macro called LDAV_CVT, which returns the load average as an
+   unmultiplied double.
+
+   For backwards compatibility, we'll define LDAV_CVT in terms of
+   LOAD_AVE_CVT, but future machine config files should just define
+   LDAV_CVT directly.  */
+
+# if !defined(LDAV_CVT) && defined(LOAD_AVE_CVT)
+#  define LDAV_CVT(n) (LOAD_AVE_CVT (n) / 100.0)
+# endif
+
+# if !defined (BSD) && defined (ultrix)
+/* Ultrix behaves like BSD on Vaxen.  */
+#  define BSD
+# endif
+
+# ifdef NeXT
+/* NeXT in the 2.{0,1,2} releases defines BSD in <sys/param.h>, which
+   conflicts with the definition understood in this file, that this
+   really is BSD. */
+#  undef BSD
+
+/* NeXT defines FSCALE in <sys/param.h>.  However, we take FSCALE being
+   defined to mean that the nlist method should be used, which is not true.  */
+#  undef FSCALE
+# endif
+
+/* Same issues as for NeXT apply to the HURD-based GNU system.  */
+# ifdef __GNU__
+#  undef BSD
+#  undef FSCALE
+# endif /* __GNU__ */
+
+/* Set values that are different from the defaults, which are
+   set a little farther down with #ifndef.  */
+
+
+/* Some shorthands.  */
+
+# if defined (HPUX) && !defined (hpux)
+#  define hpux
+# endif
+
+# if defined (__hpux) && !defined (hpux)
+#  define hpux
+# endif
+
+# if defined (__sun) && !defined (sun)
+#  define sun
+# endif
+
+# if defined(hp300) && !defined(hpux)
+#  define MORE_BSD
+# endif
+
+# if defined(ultrix) && defined(mips)
+#  define decstation
+# endif
+
+# if defined (__SVR4) && !defined (SVR4)
+#  define SVR4
+# endif
+
+# if (defined(sun) && defined(SVR4)) || defined (SOLARIS2)
+#  define SUNOS_5
+# endif
+
+# if defined (__osf__) && (defined (__alpha) || defined (__alpha__))
+#  define OSF_ALPHA
+#  include <sys/mbuf.h>
+#  include <sys/socket.h>
+#  include <net/route.h>
+#  include <sys/table.h>
+# endif
+
+# if defined (__osf__) && (defined (mips) || defined (__mips__))
+#  define OSF_MIPS
+#  include <sys/table.h>
+# endif
+
+/* UTek's /bin/cc on the 4300 has no architecture specific cpp define by
+   default, but _MACH_IND_SYS_TYPES is defined in <sys/types.h>.  Combine
+   that with a couple of other things and we'll have a unique match.  */
+# if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES)
+#  define tek4300			/* Define by emacs, but not by other users.  */
+# endif
+
+/* AC_FUNC_GETLOADAVG thinks QNX is SVR4, but it isn't. */
+# if defined(__QNX__)
+#  undef SVR4
+# endif
+
+/* VAX C can't handle multi-line #ifs, or lines longer than 256 chars.  */
+# ifndef LOAD_AVE_TYPE
+
+#  ifdef MORE_BSD
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  ifdef sun
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  ifdef decstation
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  ifdef _SEQUENT_
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  ifdef sgi
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  ifdef SVR4
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  ifdef sony_news
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  ifdef sequent
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  ifdef OSF_ALPHA
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  if defined (ardent) && defined (titan)
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  ifdef tek4300
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  if defined(alliant) && defined(i860) /* Alliant FX/2800 */
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  ifdef _AIX
+#   define LOAD_AVE_TYPE long
+#  endif
+
+#  ifdef convex
+#   define LOAD_AVE_TYPE double
+#   ifndef LDAV_CVT
+#    define LDAV_CVT(n) (n)
+#   endif
+#  endif
+
+# endif /* No LOAD_AVE_TYPE.  */
+
+# ifdef OSF_ALPHA
+/* <sys/param.h> defines an incorrect value for FSCALE on Alpha OSF/1,
+   according to ghazi@noc.rutgers.edu.  */
+#  undef FSCALE
+#  define FSCALE 1024.0
+# endif
+
+# if defined(alliant) && defined(i860) /* Alliant FX/2800 */
+/* <sys/param.h> defines an incorrect value for FSCALE on an
+   Alliant FX/2800 Concentrix 2.2, according to ghazi@noc.rutgers.edu.  */
+#  undef FSCALE
+#  define FSCALE 100.0
+# endif
+
+
+# ifndef	FSCALE
+
+/* SunOS and some others define FSCALE in sys/param.h.  */
+
+#  ifdef MORE_BSD
+#   define FSCALE 2048.0
+#  endif
+
+#  if defined(MIPS) || defined(SVR4) || defined(decstation)
+#   define FSCALE 256
+#  endif
+
+#  if defined (sgi) || defined (sequent)
+/* Sometimes both MIPS and sgi are defined, so FSCALE was just defined
+   above under #ifdef MIPS.  But we want the sgi value.  */
+#   undef FSCALE
+#   define	FSCALE 1000.0
+#  endif
+
+#  if defined (ardent) && defined (titan)
+#   define FSCALE 65536.0
+#  endif
+
+#  ifdef tek4300
+#   define FSCALE 100.0
+#  endif
+
+#  ifdef _AIX
+#   define FSCALE 65536.0
+#  endif
+
+# endif	/* Not FSCALE.  */
+
+# if !defined (LDAV_CVT) && defined (FSCALE)
+#  define	LDAV_CVT(n) (((double) (n)) / FSCALE)
+# endif
+
+
+# if defined(sgi) || (defined(mips) && !defined(BSD))
+#  define FIXUP_KERNEL_SYMBOL_ADDR(nl) ((nl)[0].n_value &= ~(1 << 31))
+# endif
+
+
+# if !defined (KERNEL_FILE) && defined (sequent)
+#  define KERNEL_FILE "/dynix"
+# endif
+
+# if !defined (KERNEL_FILE) && defined (hpux)
+#  define KERNEL_FILE "/hp-ux"
+# endif
+
+# if !defined(KERNEL_FILE) && (defined(_SEQUENT_) || defined(MIPS) || defined(SVR4) || defined(ISC) || defined (sgi) || (defined (ardent) && defined (titan)))
+#  define KERNEL_FILE "/unix"
+# endif
+
+
+# if !defined (LDAV_SYMBOL) && defined (alliant)
+#  define LDAV_SYMBOL "_Loadavg"
+# endif
+
+# if !defined(LDAV_SYMBOL) && ((defined(hpux) && !defined(hp9000s300)) || defined(_SEQUENT_) || defined(SVR4) || defined(ISC) || defined(sgi) || (defined (ardent) && defined (titan)) || defined (_AIX))
+#  define LDAV_SYMBOL "avenrun"
+# endif
+
+# ifdef HAVE_UNISTD_H
+#  include <unistd.h>
+# endif
+
+# include <stdio.h>
+
+/* LOAD_AVE_TYPE should only get defined if we're going to use the
+   nlist method.  */
+# if !defined(LOAD_AVE_TYPE) && (defined(BSD) || defined(LDAV_CVT) || defined(KERNEL_FILE) || defined(LDAV_SYMBOL)) && !defined(__riscos__)
+#  define LOAD_AVE_TYPE double
+# endif
+
+# ifdef LOAD_AVE_TYPE
+
+#  ifndef VMS
+#   ifndef __linux__
+#    ifdef HAVE_NLIST_H
+#     include <nlist.h>
+#    else
+#     include <a.out.h>
+#    endif
+
+#    ifdef SUNOS_5
+#     include <fcntl.h>
+#     include <kvm.h>
+#     include <kstat.h>
+#    endif
+
+#    if defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC)
+#     include <sys/pstat.h>
+#    endif
+
+#    ifndef KERNEL_FILE
+#     define KERNEL_FILE "/vmunix"
+#    endif /* KERNEL_FILE */
+
+#    ifndef LDAV_SYMBOL
+#     define LDAV_SYMBOL "_avenrun"
+#    endif /* LDAV_SYMBOL */
+#   endif /* __linux__ */
+
+#  else /* VMS */
+
+#   ifndef eunice
+#    include <iodef.h>
+#    include <descrip.h>
+#   else /* eunice */
+#    include <vms/iodef.h>
+#   endif /* eunice */
+#  endif /* VMS */
+
+#  ifndef LDAV_CVT
+#   define LDAV_CVT(n) ((double) (n))
+#  endif /* !LDAV_CVT */
+
+# endif /* LOAD_AVE_TYPE */
+
+# if defined(__GNU__) && !defined (NeXT)
+/* Note that NeXT Openstep defines __GNU__ even though it should not.  */
+/* GNU system acts much like NeXT, for load average purposes,
+   but not exactly.  */
+#  define NeXT
+#  define host_self mach_host_self
+# endif
+
+# ifdef NeXT
+#  ifdef HAVE_MACH_MACH_H
+#   include <mach/mach.h>
+#  else
+#   include <mach.h>
+#  endif
+# endif /* NeXT */
+
+# ifdef sgi
+#  include <sys/sysmp.h>
+# endif /* sgi */
+
+# ifdef UMAX
+#  include <stdio.h>
+#  include <signal.h>
+#  include <sys/time.h>
+#  include <sys/wait.h>
+#  include <sys/syscall.h>
+
+#  ifdef UMAX_43
+#   include <machine/cpu.h>
+#   include <inq_stats/statistics.h>
+#   include <inq_stats/sysstats.h>
+#   include <inq_stats/cpustats.h>
+#   include <inq_stats/procstats.h>
+#  else /* Not UMAX_43.  */
+#   include <sys/sysdefs.h>
+#   include <sys/statistics.h>
+#   include <sys/sysstats.h>
+#   include <sys/cpudefs.h>
+#   include <sys/cpustats.h>
+#   include <sys/procstats.h>
+#  endif /* Not UMAX_43.  */
+# endif /* UMAX */
+
+# ifdef DGUX
+#  include <sys/dg_sys_info.h>
+# endif
+
+# if defined(HAVE_FCNTL_H) || defined(_POSIX_VERSION)
+#  include <fcntl.h>
+# else
+#  include <sys/file.h>
+# endif
+
+
+/* Avoid static vars inside a function since in HPUX they dump as pure.  */
+
+# ifdef NeXT
+static processor_set_t default_set;
+static int getloadavg_initialized;
+# endif /* NeXT */
+
+# ifdef UMAX
+static unsigned int cpus = 0;
+static unsigned int samples;
+# endif /* UMAX */
+
+# ifdef DGUX
+static struct dg_sys_info_load_info load_info;	/* what-a-mouthful! */
+# endif /* DGUX */
+
+#if !defined(HAVE_LIBKSTAT) && defined(LOAD_AVE_TYPE)
+/* File descriptor open to /dev/kmem or VMS load ave driver.  */
+static int channel;
+/* Nonzero iff channel is valid.  */
+static int getloadavg_initialized;
+/* Offset in kmem to seek to read load average, or 0 means invalid.  */
+static long offset;
+
+#if !defined(VMS) && !defined(sgi) && !defined(__linux__)
+static struct nlist nl[2];
+#endif /* Not VMS or sgi */
+
+#ifdef SUNOS_5
+static kvm_t *kd;
+#endif /* SUNOS_5 */
+
+#endif /* LOAD_AVE_TYPE && !HAVE_LIBKSTAT */
+
+/* Put the 1 minute, 5 minute and 15 minute load averages
+   into the first NELEM elements of LOADAVG.
+   Return the number written (never more than 3, but may be less than NELEM),
+   or -1 if an error occurred.  */
+
+int
+getloadavg (double loadavg[], int nelem)
+{
+  int elem = 0;			/* Return value.  */
+
+# ifdef NO_GET_LOAD_AVG
+#  define LDAV_DONE
+  /* Set errno to zero to indicate that there was no particular error;
+     this function just can't work at all on this system.  */
+  errno = 0;
+  elem = -1;
+# endif
+
+# if !defined (LDAV_DONE) && defined (HAVE_LIBKSTAT)
+/* Use libkstat because we don't have to be root.  */
+#  define LDAV_DONE
+  kstat_ctl_t *kc;
+  kstat_t *ksp;
+  kstat_named_t *kn;
+
+  kc = kstat_open ();
+  if (kc == 0)
+    return -1;
+  ksp = kstat_lookup (kc, "unix", 0, "system_misc");
+  if (ksp == 0 )
+    return -1;
+  if (kstat_read (kc, ksp, 0) == -1)
+    return -1;
+
+
+  kn = kstat_data_lookup (ksp, "avenrun_1min");
+  if (kn == 0)
+    {
+      /* Return -1 if no load average information is available.  */
+      nelem = 0;
+      elem = -1;
+    }
+
+  if (nelem >= 1)
+    loadavg[elem++] = (double) kn->value.ul/FSCALE;
+
+  if (nelem >= 2)
+    {
+      kn = kstat_data_lookup (ksp, "avenrun_5min");
+      if (kn != 0)
+	{
+	  loadavg[elem++] = (double) kn->value.ul/FSCALE;
+
+	  if (nelem >= 3)
+	    {
+	      kn = kstat_data_lookup (ksp, "avenrun_15min");
+	      if (kn != 0)
+		loadavg[elem++] = (double) kn->value.ul/FSCALE;
+	    }
+	}
+    }
+
+  kstat_close (kc);
+# endif /* HAVE_LIBKSTAT */
+
+# if !defined (LDAV_DONE) && defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC)
+/* Use pstat_getdynamic() because we don't have to be root.  */
+#  define LDAV_DONE
+#  undef LOAD_AVE_TYPE
+
+  struct pst_dynamic dyn_info;
+  if (pstat_getdynamic (&dyn_info, sizeof (dyn_info), 0, 0) < 0)
+    return -1;
+  if (nelem > 0)
+    loadavg[elem++] = dyn_info.psd_avg_1_min;
+  if (nelem > 1)
+    loadavg[elem++] = dyn_info.psd_avg_5_min;
+  if (nelem > 2)
+    loadavg[elem++] = dyn_info.psd_avg_15_min;
+
+# endif /* hpux && HAVE_PSTAT_GETDYNAMIC */
+
+# if !defined (LDAV_DONE) && defined (__linux__)
+#  define LDAV_DONE
+#  undef LOAD_AVE_TYPE
+
+#  ifndef LINUX_LDAV_FILE
+#   define LINUX_LDAV_FILE "/proc/loadavg"
+#  endif
+
+  char ldavgbuf[40];
+  double load_ave[3];
+  int fd, count;
+
+  fd = open (LINUX_LDAV_FILE, O_RDONLY);
+  if (fd == -1)
+    return -1;
+  count = read (fd, ldavgbuf, 40);
+  (void) close (fd);
+  if (count <= 0)
+    return -1;
+
+  /* The following sscanf must use the C locale.  */
+  setlocale (LC_NUMERIC, "C");
+  count = sscanf (ldavgbuf, "%lf %lf %lf",
+		  &load_ave[0], &load_ave[1], &load_ave[2]);
+  setlocale (LC_NUMERIC, "");
+  if (count < 1)
+    return -1;
+
+  for (elem = 0; elem < nelem && elem < count; elem++)
+    loadavg[elem] = load_ave[elem];
+
+  return elem;
+
+# endif /* __linux__ */
+
+# if !defined (LDAV_DONE) && defined (__NetBSD__)
+#  define LDAV_DONE
+#  undef LOAD_AVE_TYPE
+
+#  ifndef NETBSD_LDAV_FILE
+#   define NETBSD_LDAV_FILE "/kern/loadavg"
+#  endif
+
+  unsigned long int load_ave[3], scale;
+  int count;
+  FILE *fp;
+
+  fp = fopen (NETBSD_LDAV_FILE, "r");
+  if (fp == NULL)
+    return -1;
+  count = fscanf (fp, "%lu %lu %lu %lu\n",
+		  &load_ave[0], &load_ave[1], &load_ave[2],
+		  &scale);
+  (void) fclose (fp);
+  if (count != 4)
+    return -1;
+
+  for (elem = 0; elem < nelem; elem++)
+    loadavg[elem] = (double) load_ave[elem] / (double) scale;
+
+  return elem;
+
+# endif /* __NetBSD__ */
+
+# if !defined (LDAV_DONE) && defined (NeXT)
+#  define LDAV_DONE
+  /* The NeXT code was adapted from iscreen 3.2.  */
+
+  host_t host;
+  struct processor_set_basic_info info;
+  unsigned info_count;
+
+  /* We only know how to get the 1-minute average for this system,
+     so even if the caller asks for more than 1, we only return 1.  */
+
+  if (!getloadavg_initialized)
+    {
+      if (processor_set_default (host_self (), &default_set) == KERN_SUCCESS)
+	getloadavg_initialized = 1;
+    }
+
+  if (getloadavg_initialized)
+    {
+      info_count = PROCESSOR_SET_BASIC_INFO_COUNT;
+      if (processor_set_info (default_set, PROCESSOR_SET_BASIC_INFO, &host,
+			      (processor_set_info_t) &info, &info_count)
+	  != KERN_SUCCESS)
+	getloadavg_initialized = 0;
+      else
+	{
+	  if (nelem > 0)
+	    loadavg[elem++] = (double) info.load_average / LOAD_SCALE;
+	}
+    }
+
+  if (!getloadavg_initialized)
+    return -1;
+# endif /* NeXT */
+
+# if !defined (LDAV_DONE) && defined (UMAX)
+#  define LDAV_DONE
+/* UMAX 4.2, which runs on the Encore Multimax multiprocessor, does not
+   have a /dev/kmem.  Information about the workings of the running kernel
+   can be gathered with inq_stats system calls.
+   We only know how to get the 1-minute average for this system.  */
+
+  struct proc_summary proc_sum_data;
+  struct stat_descr proc_info;
+  double load;
+  register unsigned int i, j;
+
+  if (cpus == 0)
+    {
+      register unsigned int c, i;
+      struct cpu_config conf;
+      struct stat_descr desc;
+
+      desc.sd_next = 0;
+      desc.sd_subsys = SUBSYS_CPU;
+      desc.sd_type = CPUTYPE_CONFIG;
+      desc.sd_addr = (char *) &conf;
+      desc.sd_size = sizeof conf;
+
+      if (inq_stats (1, &desc))
+	return -1;
+
+      c = 0;
+      for (i = 0; i < conf.config_maxclass; ++i)
+	{
+	  struct class_stats stats;
+	  memset (&stats, '\0', sizeof stats);
+
+	  desc.sd_type = CPUTYPE_CLASS;
+	  desc.sd_objid = i;
+	  desc.sd_addr = (char *) &stats;
+	  desc.sd_size = sizeof stats;
+
+	  if (inq_stats (1, &desc))
+	    return -1;
+
+	  c += stats.class_numcpus;
+	}
+      cpus = c;
+      samples = cpus < 2 ? 3 : (2 * cpus / 3);
+    }
+
+  proc_info.sd_next = 0;
+  proc_info.sd_subsys = SUBSYS_PROC;
+  proc_info.sd_type = PROCTYPE_SUMMARY;
+  proc_info.sd_addr = (char *) &proc_sum_data;
+  proc_info.sd_size = sizeof (struct proc_summary);
+  proc_info.sd_sizeused = 0;
+
+  if (inq_stats (1, &proc_info) != 0)
+    return -1;
+
+  load = proc_sum_data.ps_nrunnable;
+  j = 0;
+  for (i = samples - 1; i > 0; --i)
+    {
+      load += proc_sum_data.ps_nrun[j];
+      if (j++ == PS_NRUNSIZE)
+	j = 0;
+    }
+
+  if (nelem > 0)
+    loadavg[elem++] = load / samples / cpus;
+# endif /* UMAX */
+
+# if !defined (LDAV_DONE) && defined (DGUX)
+#  define LDAV_DONE
+  /* This call can return -1 for an error, but with good args
+     it's not supposed to fail.  The first argument is for no
+     apparent reason of type 'long int *'.  */
+  dg_sys_info ((long int *) &load_info,
+	       DG_SYS_INFO_LOAD_INFO_TYPE,
+	       DG_SYS_INFO_LOAD_VERSION_0);
+
+  if (nelem > 0)
+    loadavg[elem++] = load_info.one_minute;
+  if (nelem > 1)
+    loadavg[elem++] = load_info.five_minute;
+  if (nelem > 2)
+    loadavg[elem++] = load_info.fifteen_minute;
+# endif /* DGUX */
+
+# if !defined (LDAV_DONE) && defined (apollo)
+#  define LDAV_DONE
+/* Apollo code from lisch@mentorg.com (Ray Lischner).
+
+   This system call is not documented.  The load average is obtained as
+   three long integers, for the load average over the past minute,
+   five minutes, and fifteen minutes.  Each value is a scaled integer,
+   with 16 bits of integer part and 16 bits of fraction part.
+
+   I'm not sure which operating system first supported this system call,
+   but I know that SR10.2 supports it.  */
+
+  extern void proc1_$get_loadav ();
+  unsigned long load_ave[3];
+
+  proc1_$get_loadav (load_ave);
+
+  if (nelem > 0)
+    loadavg[elem++] = load_ave[0] / 65536.0;
+  if (nelem > 1)
+    loadavg[elem++] = load_ave[1] / 65536.0;
+  if (nelem > 2)
+    loadavg[elem++] = load_ave[2] / 65536.0;
+# endif /* apollo */
+
+# if !defined (LDAV_DONE) && defined (OSF_MIPS)
+#  define LDAV_DONE
+
+  struct tbl_loadavg load_ave;
+  table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
+  loadavg[elem++]
+    = (load_ave.tl_lscale == 0
+       ? load_ave.tl_avenrun.d[0]
+       : (load_ave.tl_avenrun.l[0] / (double) load_ave.tl_lscale));
+# endif	/* OSF_MIPS */
+
+# if !defined (LDAV_DONE) && (defined (__MSDOS__) || defined (WINDOWS32))
+#  define LDAV_DONE
+
+  /* A faithful emulation is going to have to be saved for a rainy day.  */
+  for ( ; elem < nelem; elem++)
+    {
+      loadavg[elem] = 0.0;
+    }
+# endif  /* __MSDOS__ || WINDOWS32 */
+
+# if !defined (LDAV_DONE) && defined (OSF_ALPHA)
+#  define LDAV_DONE
+
+  struct tbl_loadavg load_ave;
+  table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
+  for (elem = 0; elem < nelem; elem++)
+    loadavg[elem]
+      = (load_ave.tl_lscale == 0
+       ? load_ave.tl_avenrun.d[elem]
+       : (load_ave.tl_avenrun.l[elem] / (double) load_ave.tl_lscale));
+# endif /* OSF_ALPHA */
+
+# if !defined (LDAV_DONE) && defined (VMS)
+  /* VMS specific code -- read from the Load Ave driver.  */
+
+  LOAD_AVE_TYPE load_ave[3];
+  static int getloadavg_initialized = 0;
+#  ifdef eunice
+  struct
+  {
+    int dsc$w_length;
+    char *dsc$a_pointer;
+  } descriptor;
+#  endif
+
+  /* Ensure that there is a channel open to the load ave device.  */
+  if (!getloadavg_initialized)
+    {
+      /* Attempt to open the channel.  */
+#  ifdef eunice
+      descriptor.dsc$w_length = 18;
+      descriptor.dsc$a_pointer = "$$VMS_LOAD_AVERAGE";
+#  else
+      $DESCRIPTOR (descriptor, "LAV0:");
+#  endif
+      if (sys$assign (&descriptor, &channel, 0, 0) & 1)
+	getloadavg_initialized = 1;
+    }
+
+  /* Read the load average vector.  */
+  if (getloadavg_initialized
+      && !(sys$qiow (0, channel, IO$_READVBLK, 0, 0, 0,
+		     load_ave, 12, 0, 0, 0, 0) & 1))
+    {
+      sys$dassgn (channel);
+      getloadavg_initialized = 0;
+    }
+
+  if (!getloadavg_initialized)
+    return -1;
+# endif /* VMS */
+
+# if !defined (LDAV_DONE) && defined(LOAD_AVE_TYPE) && !defined(VMS)
+
+  /* UNIX-specific code -- read the average from /dev/kmem.  */
+
+#  define LDAV_PRIVILEGED		/* This code requires special installation.  */
+
+  LOAD_AVE_TYPE load_ave[3];
+
+  /* Get the address of LDAV_SYMBOL.  */
+  if (offset == 0)
+    {
+#  ifndef sgi
+#   ifndef NLIST_STRUCT
+      strcpy (nl[0].n_name, LDAV_SYMBOL);
+      strcpy (nl[1].n_name, "");
+#   else /* NLIST_STRUCT */
+#    ifdef HAVE_STRUCT_NLIST_N_UN_N_NAME
+      nl[0].n_un.n_name = LDAV_SYMBOL;
+      nl[1].n_un.n_name = 0;
+#    else /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */
+      nl[0].n_name = LDAV_SYMBOL;
+      nl[1].n_name = 0;
+#    endif /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */
+#   endif /* NLIST_STRUCT */
+
+#   ifndef SUNOS_5
+      if (
+#    if !(defined (_AIX) && !defined (ps2))
+	  nlist (KERNEL_FILE, nl)
+#    else  /* _AIX */
+	  knlist (nl, 1, sizeof (nl[0]))
+#    endif
+	  >= 0)
+	  /* Omit "&& nl[0].n_type != 0 " -- it breaks on Sun386i.  */
+	  {
+#    ifdef FIXUP_KERNEL_SYMBOL_ADDR
+	    FIXUP_KERNEL_SYMBOL_ADDR (nl);
+#    endif
+	    offset = nl[0].n_value;
+	  }
+#   endif /* !SUNOS_5 */
+#  else  /* sgi */
+      int ldav_off;
+
+      ldav_off = sysmp (MP_KERNADDR, MPKA_AVENRUN);
+      if (ldav_off != -1)
+	offset = (long) ldav_off & 0x7fffffff;
+#  endif /* sgi */
+    }
+
+  /* Make sure we have /dev/kmem open.  */
+  if (!getloadavg_initialized)
+    {
+#  ifndef SUNOS_5
+      channel = open ("/dev/kmem", 0);
+      if (channel >= 0)
+	{
+	  /* Set the channel to close on exec, so it does not
+	     litter any child's descriptor table.  */
+#   ifdef F_SETFD
+#    ifndef FD_CLOEXEC
+#     define FD_CLOEXEC 1
+#    endif
+	  (void) fcntl (channel, F_SETFD, FD_CLOEXEC);
+#   endif
+	  getloadavg_initialized = 1;
+	}
+#  else /* SUNOS_5 */
+      /* We pass 0 for the kernel, corefile, and swapfile names
+	 to use the currently running kernel.  */
+      kd = kvm_open (0, 0, 0, O_RDONLY, 0);
+      if (kd != 0)
+	{
+	  /* nlist the currently running kernel.  */
+	  kvm_nlist (kd, nl);
+	  offset = nl[0].n_value;
+	  getloadavg_initialized = 1;
+	}
+#  endif /* SUNOS_5 */
+    }
+
+  /* If we can, get the load average values.  */
+  if (offset && getloadavg_initialized)
+    {
+      /* Try to read the load.  */
+#  ifndef SUNOS_5
+      if (lseek (channel, offset, 0) == -1L
+	  || read (channel, (char *) load_ave, sizeof (load_ave))
+	  != sizeof (load_ave))
+	{
+	  close (channel);
+	  getloadavg_initialized = 0;
+	}
+#  else  /* SUNOS_5 */
+      if (kvm_read (kd, offset, (char *) load_ave, sizeof (load_ave))
+	  != sizeof (load_ave))
+        {
+          kvm_close (kd);
+          getloadavg_initialized = 0;
+	}
+#  endif /* SUNOS_5 */
+    }
+
+  if (offset == 0 || !getloadavg_initialized)
+    return -1;
+# endif /* LOAD_AVE_TYPE and not VMS */
+
+# if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) /* Including VMS.  */
+  if (nelem > 0)
+    loadavg[elem++] = LDAV_CVT (load_ave[0]);
+  if (nelem > 1)
+    loadavg[elem++] = LDAV_CVT (load_ave[1]);
+  if (nelem > 2)
+    loadavg[elem++] = LDAV_CVT (load_ave[2]);
+
+#  define LDAV_DONE
+# endif /* !LDAV_DONE && LOAD_AVE_TYPE */
+
+# ifdef LDAV_DONE
+  return elem;
+# else
+  /* Set errno to zero to indicate that there was no particular error;
+     this function just can't work at all on this system.  */
+  errno = 0;
+  return -1;
+# endif
+}
+
+#endif /* ! HAVE_GETLOADAVG */
+
+#ifdef TEST
+#include "makeint.h"
+
+int
+main (int argc, char **argv)
+{
+  int naptime = 0;
+
+  if (argc > 1)
+    naptime = atoi (argv[1]);
+
+  while (1)
+    {
+      double avg[3];
+      int loads;
+
+      errno = 0;		/* Don't be misled if it doesn't set errno.  */
+      loads = getloadavg (avg, 3);
+      if (loads == -1)
+	{
+	  perror ("Error getting load average");
+	  exit (1);
+	}
+      if (loads > 0)
+	printf ("1-minute: %f  ", avg[0]);
+      if (loads > 1)
+	printf ("5-minute: %f  ", avg[1]);
+      if (loads > 2)
+	printf ("15-minute: %f  ", avg[2]);
+      if (loads > 0)
+	putchar ('\n');
+
+      if (naptime == 0)
+	break;
+      sleep (naptime);
+    }
+
+  exit (0);
+}
+#endif /* TEST */
diff --git a/src/kmk/getopt.c b/src/kmk/getopt.c
new file mode 100644
index 0000000..b7999ea
--- /dev/null
+++ b/src/kmk/getopt.c
@@ -0,0 +1,1031 @@
+/* Getopt for GNU.
+NOTE: getopt is now part of the C library, so if you don't know what
+"Keep this file name-space clean" means, talk to drepper@gnu.org
+before changing it!
+
+Copyright (C) 1987-2016 Free Software Foundation, Inc.
+
+NOTE: The canonical source of this file is maintained with the GNU C Library.
+Bugs can be reported to bug-glibc@gnu.org.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
+   Ditto for AIX 3.2 and <stdlib.h>.  */
+#ifndef _NO_PROTO
+# define _NO_PROTO
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if !defined __STDC__ || !__STDC__
+/* This is a separate conditional since some stdc systems
+   reject `defined (const)'.  */
+# ifndef const
+#  define const
+# endif
+#endif
+
+#include <stdio.h>
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#define GETOPT_INTERFACE_VERSION 2
+#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
+# include <gnu-versions.h>
+# if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
+#  define ELIDE_CODE
+# endif
+#endif
+
+#ifndef ELIDE_CODE
+
+
+/* This needs to come after some library #include
+   to get __GNU_LIBRARY__ defined.  */
+#ifdef	__GNU_LIBRARY__
+/* Don't include stdlib.h for non-GNU C libraries because some of them
+   contain conflicting prototypes for getopt.  */
+# include <stdlib.h>
+# include <unistd.h>
+#endif	/* GNU C library.  */
+
+#ifdef VMS
+# include <unixlib.h>
+# if HAVE_STRING_H - 0
+#  include <string.h>
+# endif
+#endif
+
+/* This is for other GNU distributions with internationalized messages.
+   When compiling libc, the _ macro is predefined.  */
+#include "gettext.h"
+#define _(msgid)    gettext (msgid)
+
+
+/* This version of `getopt' appears to the caller like standard Unix 'getopt'
+   but it behaves differently for the user, since it allows the user
+   to intersperse the options with the other arguments.
+
+   As `getopt' works, it permutes the elements of ARGV so that,
+   when it is done, all the options precede everything else.  Thus
+   all application programs are extended to handle flexible argument order.
+
+   Setting the environment variable POSIXLY_CORRECT disables permutation.
+   Then the behavior is completely standard.
+
+   GNU application programs can use a third alternative mode in which
+   they can distinguish the relative order of options and other arguments.  */
+
+#include "getopt.h"
+
+/* For communication from `getopt' to the caller.
+   When `getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+char *optarg = NULL;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to `getopt'.
+
+   On entry to `getopt', zero means this is the first call; initialize.
+
+   When `getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+/* 1003.2 says this must be 1 before any call.  */
+int optind = 1;
+
+/* Formerly, initialization of getopt depended on optind==0, which
+   causes problems with re-calling getopt as programs generally don't
+   know that. */
+
+int __getopt_initialized = 0;
+
+/* The next char to be scanned in the option-element
+   in which the last option character we returned was found.
+   This allows us to pick up the scan where we left off.
+
+   If this is zero, or a null string, it means resume the scan
+   by advancing to the next ARGV-element.  */
+
+static char *nextchar;
+
+/* Callers store zero here to inhibit the error message
+   for unrecognized options.  */
+
+int opterr = 1;
+
+/* Set to an option character which was unrecognized.
+   This must be initialized on some systems to avoid linking in the
+   system's own getopt implementation.  */
+
+int optopt = '?';
+
+/* Describe how to deal with options that follow non-option ARGV-elements.
+
+   If the caller did not specify anything,
+   the default is REQUIRE_ORDER if the environment variable
+   POSIXLY_CORRECT is defined, PERMUTE otherwise.
+
+   REQUIRE_ORDER means don't recognize them as options;
+   stop option processing when the first non-option is seen.
+   This is what Unix does.
+   This mode of operation is selected by either setting the environment
+   variable POSIXLY_CORRECT, or using `+' as the first character
+   of the list of option characters.
+
+   PERMUTE is the default.  We permute the contents of ARGV as we scan,
+   so that eventually all the non-options are at the end.  This allows options
+   to be given in any order, even with programs that were not written to
+   expect this.
+
+   RETURN_IN_ORDER is an option available to programs that were written
+   to expect options and other ARGV-elements in any order and that care about
+   the ordering of the two.  We describe each non-option ARGV-element
+   as if it were the argument of an option with character code 1.
+   Using `-' as the first character of the list of option characters
+   selects this mode of operation.
+
+   The special argument `--' forces an end of option-scanning regardless
+   of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
+   `--' can cause `getopt' to return -1 with `optind' != ARGC.  */
+
+static enum
+{
+  REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
+} ordering;
+
+/* Value of POSIXLY_CORRECT environment variable.  */
+static char *posixly_correct;
+
+#ifdef	__GNU_LIBRARY__
+/* We want to avoid inclusion of string.h with non-GNU libraries
+   because there are many ways it can cause trouble.
+   On some systems, it contains special magic macros that don't work
+   in GCC.  */
+# include <string.h>
+# define my_index	strchr
+#else
+
+# if HAVE_STRING_H
+#  include <string.h>
+# else
+#  include <strings.h>
+# endif
+
+#ifndef KMK
+/* Avoid depending on library functions or files
+   whose names are inconsistent.  */
+#ifndef getenv
+extern char *getenv ();
+#endif
+#else /* KMK */
+# include <stdlib.h>
+#endif /* KMK */
+
+static char *
+my_index (const char *str, int chr)
+{
+  while (*str)
+    {
+      if (*str == chr)
+	return (char *) str;
+      str++;
+    }
+  return 0;
+}
+
+/* If using GCC, we can safely declare strlen this way.
+   If not using GCC, it is ok not to declare it.  */
+#ifdef __GNUC__
+/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
+   That was relevant to code that was here before.  */
+# if (!defined __STDC__ || !__STDC__) && !defined strlen
+/* gcc with -traditional declares the built-in strlen to return int,
+   and has done so at least since version 2.4.5. -- rms.  */
+extern int strlen (const char *);
+# endif /* not __STDC__ */
+#endif /* __GNUC__ */
+
+#endif /* not __GNU_LIBRARY__ */
+
+/* Handle permutation of arguments.  */
+
+/* Describe the part of ARGV that contains non-options that have
+   been skipped.  `first_nonopt' is the index in ARGV of the first of them;
+   `last_nonopt' is the index after the last of them.  */
+
+static int first_nonopt;
+static int last_nonopt;
+
+#ifdef _LIBC
+/* Bash 2.0 gives us an environment variable containing flags
+   indicating ARGV elements that should not be considered arguments.  */
+
+/* Defined in getopt_init.c  */
+extern char *__getopt_nonoption_flags;
+
+static int nonoption_flags_max_len;
+static int nonoption_flags_len;
+
+static int original_argc;
+static char *const *original_argv;
+
+/* Make sure the environment variable bash 2.0 puts in the environment
+   is valid for the getopt call we must make sure that the ARGV passed
+   to getopt is that one passed to the process.  */
+static void __attribute__ ((unused))
+store_args_and_env (int argc, char *const *argv)
+{
+  /* XXX This is no good solution.  We should rather copy the args so
+     that we can compare them later.  But we must not use malloc(3).  */
+  original_argc = argc;
+  original_argv = argv;
+}
+# ifdef text_set_element
+text_set_element (__libc_subinit, store_args_and_env);
+# endif /* text_set_element */
+
+# define SWAP_FLAGS(ch1, ch2) \
+  if (nonoption_flags_len > 0)						      \
+    {									      \
+      char __tmp = __getopt_nonoption_flags[ch1];			      \
+      __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2];	      \
+      __getopt_nonoption_flags[ch2] = __tmp;				      \
+    }
+#else	/* !_LIBC */
+# define SWAP_FLAGS(ch1, ch2)
+#endif	/* _LIBC */
+
+/* Exchange two adjacent subsequences of ARGV.
+   One subsequence is elements [first_nonopt,last_nonopt)
+   which contains all the non-options that have been skipped so far.
+   The other is elements [last_nonopt,optind), which contains all
+   the options processed since those non-options were skipped.
+
+   `first_nonopt' and `last_nonopt' are relocated so that they describe
+   the new indices of the non-options in ARGV after they are moved.  */
+
+#if defined __STDC__ && __STDC__
+static void exchange (char **);
+#endif
+
+static void
+exchange (char **argv)
+{
+  int bottom = first_nonopt;
+  int middle = last_nonopt;
+  int top = optind;
+  char *tem;
+
+  /* Exchange the shorter segment with the far end of the longer segment.
+     That puts the shorter segment into the right place.
+     It leaves the longer segment in the right place overall,
+     but it consists of two parts that need to be swapped next.  */
+
+#ifdef _LIBC
+  /* First make sure the handling of the `__getopt_nonoption_flags'
+     string can work normally.  Our top argument must be in the range
+     of the string.  */
+  if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
+    {
+      /* We must extend the array.  The user plays games with us and
+	 presents new arguments.  */
+      char *new_str = malloc (top + 1);
+      if (new_str == NULL)
+	nonoption_flags_len = nonoption_flags_max_len = 0;
+      else
+	{
+	  memset (__mempcpy (new_str, __getopt_nonoption_flags,
+			     nonoption_flags_max_len),
+		  '\0', top + 1 - nonoption_flags_max_len);
+	  nonoption_flags_max_len = top + 1;
+	  __getopt_nonoption_flags = new_str;
+	}
+    }
+#endif
+
+  while (top > middle && middle > bottom)
+    {
+      if (top - middle > middle - bottom)
+	{
+	  /* Bottom segment is the short one.  */
+	  int len = middle - bottom;
+	  register int i;
+
+	  /* Swap it with the top part of the top segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[top - (middle - bottom) + i];
+	      argv[top - (middle - bottom) + i] = tem;
+	      SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
+	    }
+	  /* Exclude the moved bottom segment from further swapping.  */
+	  top -= len;
+	}
+      else
+	{
+	  /* Top segment is the short one.  */
+	  int len = top - middle;
+	  register int i;
+
+	  /* Swap it with the bottom part of the bottom segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[middle + i];
+	      argv[middle + i] = tem;
+	      SWAP_FLAGS (bottom + i, middle + i);
+	    }
+	  /* Exclude the moved top segment from further swapping.  */
+	  bottom += len;
+	}
+    }
+
+  /* Update records for the slots the non-options now occupy.  */
+
+  first_nonopt += (optind - last_nonopt);
+  last_nonopt = optind;
+}
+
+/* Initialize the internal data when the first call is made.  */
+
+#if defined __STDC__ && __STDC__
+static const char *_getopt_initialize (int, char *const *, const char *);
+#endif
+static const char *
+_getopt_initialize (int argc, char *const *argv, const char *optstring)
+{
+  /* Start processing options with ARGV-element 1 (since ARGV-element 0
+     is the program name); the sequence of previously skipped
+     non-option ARGV-elements is empty.  */
+
+  first_nonopt = last_nonopt = optind;
+
+  nextchar = NULL;
+
+  posixly_correct = getenv ("POSIXLY_CORRECT");
+
+  /* Determine how to handle the ordering of options and nonoptions.  */
+
+  if (optstring[0] == '-')
+    {
+      ordering = RETURN_IN_ORDER;
+      ++optstring;
+    }
+  else if (optstring[0] == '+')
+    {
+      ordering = REQUIRE_ORDER;
+      ++optstring;
+    }
+  else if (posixly_correct != NULL)
+    ordering = REQUIRE_ORDER;
+  else
+    ordering = PERMUTE;
+
+#ifdef _LIBC
+  if (posixly_correct == NULL
+      && argc == original_argc && argv == original_argv)
+    {
+      if (nonoption_flags_max_len == 0)
+	{
+	  if (__getopt_nonoption_flags == NULL
+	      || __getopt_nonoption_flags[0] == '\0')
+	    nonoption_flags_max_len = -1;
+	  else
+	    {
+	      const char *orig_str = __getopt_nonoption_flags;
+	      int len = nonoption_flags_max_len = strlen (orig_str);
+	      if (nonoption_flags_max_len < argc)
+		nonoption_flags_max_len = argc;
+	      __getopt_nonoption_flags =
+		(char *) malloc (nonoption_flags_max_len);
+	      if (__getopt_nonoption_flags == NULL)
+		nonoption_flags_max_len = -1;
+	      else
+		memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
+			'\0', nonoption_flags_max_len - len);
+	    }
+	}
+      nonoption_flags_len = nonoption_flags_max_len;
+    }
+  else
+    nonoption_flags_len = 0;
+#endif
+
+  return optstring;
+}
+
+/* Scan elements of ARGV (whose length is ARGC) for option characters
+   given in OPTSTRING.
+
+   If an element of ARGV starts with '-', and is not exactly "-" or "--",
+   then it is an option element.  The characters of this element
+   (aside from the initial '-') are option characters.  If `getopt'
+   is called repeatedly, it returns successively each of the option characters
+   from each of the option elements.
+
+   If `getopt' finds another option character, it returns that character,
+   updating `optind' and `nextchar' so that the next call to `getopt' can
+   resume the scan with the following option character or ARGV-element.
+
+   If there are no more option characters, `getopt' returns -1.
+   Then `optind' is the index in ARGV of the first ARGV-element
+   that is not an option.  (The ARGV-elements have been permuted
+   so that those that are not options now come last.)
+
+   OPTSTRING is a string containing the legitimate option characters.
+   If an option character is seen that is not listed in OPTSTRING,
+   return '?' after printing an error message.  If you set `opterr' to
+   zero, the error message is suppressed but we still return '?'.
+
+   If a char in OPTSTRING is followed by a colon, that means it wants an arg,
+   so the following text in the same ARGV-element, or the text of the following
+   ARGV-element, is returned in `optarg'.  Two colons mean an option that
+   wants an optional arg; if there is text in the current ARGV-element,
+   it is returned in `optarg', otherwise `optarg' is set to zero.
+
+   If OPTSTRING starts with `-' or `+', it requests different methods of
+   handling the non-option ARGV-elements.
+   See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
+
+   Long-named options begin with `--' instead of `-'.
+   Their names may be abbreviated as long as the abbreviation is unique
+   or is an exact match for some defined option.  If they have an
+   argument, it follows the option name in the same ARGV-element, separated
+   from the option name by a `=', or else the in next ARGV-element.
+   When `getopt' finds a long-named option, it returns 0 if that option's
+   `flag' field is nonzero, the value of the option's `val' field
+   if the `flag' field is zero.
+
+   The elements of ARGV aren't really const, because we permute them.
+   But we pretend they're const in the prototype to be compatible
+   with other systems.
+
+   LONGOPTS is a vector of `struct option' terminated by an
+   element containing a name which is zero.
+
+   LONGIND returns the index in LONGOPT of the long-named option found.
+   It is only valid when a long-named option has been found by the most
+   recent call.
+
+   If LONG_ONLY is nonzero, '-' as well as '--' can introduce
+   long-named options.  */
+
+int
+_getopt_internal (int argc, char *const *argv, const char *optstring,
+                  const struct option *longopts, int *longind, int long_only)
+{
+  optarg = NULL;
+
+  if (optind == 0 || !__getopt_initialized)
+    {
+      if (optind == 0)
+	optind = 1;	/* Don't scan ARGV[0], the program name.  */
+      optstring = _getopt_initialize (argc, argv, optstring);
+      __getopt_initialized = 1;
+    }
+
+  /* Test whether ARGV[optind] points to a non-option argument.
+     Either it does not have option syntax, or there is an environment flag
+     from the shell indicating it is not an option.  The later information
+     is only used when the used in the GNU libc.  */
+#ifdef _LIBC
+# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0'	      \
+		      || (optind < nonoption_flags_len			      \
+			  && __getopt_nonoption_flags[optind] == '1'))
+#else
+# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
+#endif
+
+  if (nextchar == NULL || *nextchar == '\0')
+    {
+      /* Advance to the next ARGV-element.  */
+
+      /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
+	 moved back by the user (who may also have changed the arguments).  */
+      if (last_nonopt > optind)
+	last_nonopt = optind;
+      if (first_nonopt > optind)
+	first_nonopt = optind;
+
+      if (ordering == PERMUTE)
+	{
+	  /* If we have just processed some options following some non-options,
+	     exchange them so that the options come first.  */
+
+	  if (first_nonopt != last_nonopt && last_nonopt != optind)
+	    exchange ((char **) argv);
+	  else if (last_nonopt != optind)
+	    first_nonopt = optind;
+
+	  /* Skip any additional non-options
+	     and extend the range of non-options previously skipped.  */
+
+	  while (optind < argc && NONOPTION_P)
+	    optind++;
+	  last_nonopt = optind;
+	}
+
+      /* The special ARGV-element `--' means premature end of options.
+	 Skip it like a null option,
+	 then exchange with previous non-options as if it were an option,
+	 then skip everything else like a non-option.  */
+
+      if (optind != argc && !strcmp (argv[optind], "--"))
+	{
+	  optind++;
+
+	  if (first_nonopt != last_nonopt && last_nonopt != optind)
+	    exchange ((char **) argv);
+	  else if (first_nonopt == last_nonopt)
+	    first_nonopt = optind;
+	  last_nonopt = argc;
+
+	  optind = argc;
+	}
+
+      /* If we have done all the ARGV-elements, stop the scan
+	 and back over any non-options that we skipped and permuted.  */
+
+      if (optind == argc)
+	{
+	  /* Set the next-arg-index to point at the non-options
+	     that we previously skipped, so the caller will digest them.  */
+	  if (first_nonopt != last_nonopt)
+	    optind = first_nonopt;
+	  return -1;
+	}
+
+      /* If we have come to a non-option and did not permute it,
+	 either stop the scan or describe it to the caller and pass it by.  */
+
+      if (NONOPTION_P)
+	{
+	  if (ordering == REQUIRE_ORDER)
+	    return -1;
+	  optarg = argv[optind++];
+	  return 1;
+	}
+
+      /* We have found another option-ARGV-element.
+	 Skip the initial punctuation.  */
+
+      nextchar = (argv[optind] + 1
+		  + (longopts != NULL && argv[optind][1] == '-'));
+    }
+
+  /* Decode the current option-ARGV-element.  */
+
+  /* Check whether the ARGV-element is a long option.
+
+     If long_only and the ARGV-element has the form "-f", where f is
+     a valid short option, don't consider it an abbreviated form of
+     a long option that starts with f.  Otherwise there would be no
+     way to give the -f short option.
+
+     On the other hand, if there's a long option "fubar" and
+     the ARGV-element is "-fu", do consider that an abbreviation of
+     the long option, just like "--fu", and not "-f" with arg "u".
+
+     This distinction seems to be the most useful approach.  */
+
+  if (longopts != NULL
+      && (argv[optind][1] == '-'
+	  || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
+    {
+      char *nameend;
+      const struct option *p;
+      const struct option *pfound = NULL;
+      int exact = 0;
+      int ambig = 0;
+      int indfound = -1;
+      int option_index;
+
+      for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
+	/* Do nothing.  */ ;
+
+      /* Test all long options for either exact match
+	 or abbreviated matches.  */
+      for (p = longopts, option_index = 0; p->name; p++, option_index++)
+	if (!strncmp (p->name, nextchar, nameend - nextchar))
+	  {
+	    if ((unsigned int) (nameend - nextchar)
+		== (unsigned int) strlen (p->name))
+	      {
+		/* Exact match found.  */
+		pfound = p;
+		indfound = option_index;
+		exact = 1;
+		break;
+	      }
+	    else if (pfound == NULL)
+	      {
+		/* First nonexact match found.  */
+		pfound = p;
+		indfound = option_index;
+	      }
+	    else
+	      /* Second or later nonexact match found.  */
+	      ambig = 1;
+	  }
+
+      if (ambig && !exact)
+	{
+	  if (opterr)
+	    fprintf (stderr, _("%s: option '%s' is ambiguous\n"),
+		     argv[0], argv[optind]);
+	  nextchar += strlen (nextchar);
+	  optind++;
+	  optopt = 0;
+	  return '?';
+	}
+
+      if (pfound != NULL)
+	{
+	  option_index = indfound;
+	  optind++;
+	  if (*nameend)
+	    {
+	      /* Don't test has_arg with >, because some C compilers don't
+		 allow it to be used on enums.  */
+	      if (pfound->has_arg)
+		optarg = nameend + 1;
+	      else
+		{
+		  if (opterr)
+		  { /* bird: disambiguate */
+		   if (argv[optind - 1][1] == '-')
+		    /* --option */
+		    fprintf (stderr,
+		     _("%s: option '--%s' doesn't allow an argument\n"),
+		     argv[0], pfound->name);
+		   else
+		    /* +option or -option */
+		    fprintf (stderr,
+		     _("%s: option '%c%s' doesn't allow an argument\n"),
+		     argv[0], argv[optind - 1][0], pfound->name);
+		  }
+
+		  nextchar += strlen (nextchar);
+
+		  optopt = pfound->val;
+		  return '?';
+		}
+	    }
+	  else if (pfound->has_arg == 1)
+	    {
+	      if (optind < argc)
+		optarg = argv[optind++];
+	      else
+		{
+		  if (opterr)
+		    fprintf (stderr,
+			   _("%s: option '%s' requires an argument\n"),
+			   argv[0], argv[optind - 1]);
+		  nextchar += strlen (nextchar);
+		  optopt = pfound->val;
+		  return optstring[0] == ':' ? ':' : '?';
+		}
+	    }
+	  nextchar += strlen (nextchar);
+	  if (longind != NULL)
+	    *longind = option_index;
+	  if (pfound->flag)
+	    {
+	      *(pfound->flag) = pfound->val;
+	      return 0;
+	    }
+	  return pfound->val;
+	}
+
+      /* Can't find it as a long option.  If this is not getopt_long_only,
+	 or the option starts with '--' or is not a valid short
+	 option, then it's an error.
+	 Otherwise interpret it as a short option.  */
+      if (!long_only || argv[optind][1] == '-'
+	  || my_index (optstring, *nextchar) == NULL)
+	{
+	  if (opterr)
+	    {
+	      if (argv[optind][1] == '-')
+		/* --option */
+		fprintf (stderr, _("%s: unrecognized option '--%s'\n"),
+			 argv[0], nextchar);
+	      else
+		/* +option or -option */
+		fprintf (stderr, _("%s: unrecognized option '%c%s'\n"),
+			 argv[0], argv[optind][0], nextchar);
+	    }
+	  nextchar = (char *) "";
+	  optind++;
+	  optopt = 0;
+	  return '?';
+	}
+    }
+
+  /* Look at and handle the next short option-character.  */
+
+  {
+    char c = *nextchar++;
+    char *temp = my_index (optstring, c);
+
+    /* Increment `optind' when we start to process its last character.  */
+    if (*nextchar == '\0')
+      ++optind;
+
+    if (temp == NULL || c == ':')
+      {
+	if (opterr)
+	  {
+	    if (posixly_correct)
+	      /* 1003.2 specifies the format of this message.  */
+	      fprintf (stderr, _("%s: illegal option -- %c\n"),
+		       argv[0], c);
+	    else
+	      fprintf (stderr, _("%s: invalid option -- %c\n"),
+		       argv[0], c);
+	  }
+	optopt = c;
+	return '?';
+      }
+    /* Convenience. Treat POSIX -W foo same as long option --foo */
+    if (temp[0] == 'W' && temp[1] == ';')
+      {
+	char *nameend;
+	const struct option *p;
+	const struct option *pfound = NULL;
+	int exact = 0;
+	int ambig = 0;
+	int indfound = 0;
+	int option_index;
+
+	/* This is an option that requires an argument.  */
+	if (*nextchar != '\0')
+	  {
+	    optarg = nextchar;
+	    /* If we end this ARGV-element by taking the rest as an arg,
+	       we must advance to the next element now.  */
+	    optind++;
+	  }
+	else if (optind == argc)
+	  {
+	    if (opterr)
+	      {
+		/* 1003.2 specifies the format of this message.  */
+		fprintf (stderr, _("%s: option requires an argument -- %c\n"),
+			 argv[0], c);
+	      }
+	    optopt = c;
+	    if (optstring[0] == ':')
+	      c = ':';
+	    else
+	      c = '?';
+	    return c;
+	  }
+	else
+	  /* We already incremented `optind' once;
+	     increment it again when taking next ARGV-elt as argument.  */
+	  optarg = argv[optind++];
+
+	/* optarg is now the argument, see if it's in the
+	   table of longopts.  */
+
+	for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
+	  /* Do nothing.  */ ;
+
+	/* Test all long options for either exact match
+	   or abbreviated matches.  */
+	for (p = longopts, option_index = 0; p->name; p++, option_index++)
+	  if (!strncmp (p->name, nextchar, nameend - nextchar))
+	    {
+	      if ((unsigned int) (nameend - nextchar) == strlen (p->name))
+		{
+		  /* Exact match found.  */
+		  pfound = p;
+		  indfound = option_index;
+		  exact = 1;
+		  break;
+		}
+	      else if (pfound == NULL)
+		{
+		  /* First nonexact match found.  */
+		  pfound = p;
+		  indfound = option_index;
+		}
+	      else
+		/* Second or later nonexact match found.  */
+		ambig = 1;
+	    }
+	if (ambig && !exact)
+	  {
+	    if (opterr)
+	      fprintf (stderr, _("%s: option '-W %s' is ambiguous\n"),
+		       argv[0], argv[optind]);
+	    nextchar += strlen (nextchar);
+	    optind++;
+	    return '?';
+	  }
+	if (pfound != NULL)
+	  {
+	    option_index = indfound;
+	    if (*nameend)
+	      {
+		/* Don't test has_arg with >, because some C compilers don't
+		   allow it to be used on enums.  */
+		if (pfound->has_arg)
+		  optarg = nameend + 1;
+		else
+		  {
+		    if (opterr)
+		      fprintf (stderr, _("\
+%s: option '-W %s' doesn't allow an argument\n"),
+			       argv[0], pfound->name);
+
+		    nextchar += strlen (nextchar);
+		    return '?';
+		  }
+	      }
+	    else if (pfound->has_arg == 1)
+	      {
+		if (optind < argc)
+		  optarg = argv[optind++];
+		else
+		  {
+		    if (opterr)
+		      fprintf (stderr,
+			       _("%s: option '%s' requires an argument\n"),
+			       argv[0], argv[optind - 1]);
+		    nextchar += strlen (nextchar);
+		    return optstring[0] == ':' ? ':' : '?';
+		  }
+	      }
+	    nextchar += strlen (nextchar);
+	    if (longind != NULL)
+	      *longind = option_index;
+	    if (pfound->flag)
+	      {
+		*(pfound->flag) = pfound->val;
+		return 0;
+	      }
+	    return pfound->val;
+	  }
+	  nextchar = NULL;
+	  return 'W';	/* Let the application handle it.   */
+      }
+    if (temp[1] == ':')
+      {
+	if (temp[2] == ':')
+	  {
+	    /* This is an option that accepts an argument optionally.  */
+	    if (*nextchar != '\0')
+	      {
+		optarg = nextchar;
+		optind++;
+	      }
+	    else
+	      optarg = NULL;
+	    nextchar = NULL;
+	  }
+	else
+	  {
+	    /* This is an option that requires an argument.  */
+	    if (*nextchar != '\0')
+	      {
+		optarg = nextchar;
+		/* If we end this ARGV-element by taking the rest as an arg,
+		   we must advance to the next element now.  */
+		optind++;
+	      }
+	    else if (optind == argc)
+	      {
+		if (opterr)
+		  {
+		    /* 1003.2 specifies the format of this message.  */
+		    fprintf (stderr,
+			   _("%s: option requires an argument -- %c\n"),
+			   argv[0], c);
+		  }
+		optopt = c;
+		if (optstring[0] == ':')
+		  c = ':';
+		else
+		  c = '?';
+	      }
+	    else
+	      /* We already incremented `optind' once;
+		 increment it again when taking next ARGV-elt as argument.  */
+	      optarg = argv[optind++];
+	    nextchar = NULL;
+	  }
+      }
+    return c;
+  }
+}
+
+int
+getopt (int argc, char *const *argv, const char *optstring)
+{
+  return _getopt_internal (argc, argv, optstring,
+			   (const struct option *) 0,
+			   (int *) 0,
+			   0);
+}
+
+#endif	/* Not ELIDE_CODE.  */
+
+#ifdef TEST
+
+/* Compile with -DTEST to make an executable for use in testing
+   the above definition of `getopt'.  */
+
+int
+main (int argc, char **argv)
+{
+  int c;
+  int digit_optind = 0;
+
+  while (1)
+    {
+      int this_option_optind = optind ? optind : 1;
+
+      c = getopt (argc, argv, "abc:d:0123456789");
+      if (c == -1)
+	break;
+
+      switch (c)
+	{
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+	  if (digit_optind != 0 && digit_optind != this_option_optind)
+	    printf ("digits occur in two different argv-elements.\n");
+	  digit_optind = this_option_optind;
+	  printf ("option %c\n", c);
+	  break;
+
+	case 'a':
+	  printf ("option a\n");
+	  break;
+
+	case 'b':
+	  printf ("option b\n");
+	  break;
+
+	case 'c':
+	  printf ("option c with value '%s'\n", optarg);
+	  break;
+
+	case '?':
+	  break;
+
+	default:
+	  printf ("?? getopt returned character code 0%o ??\n", c);
+	}
+    }
+
+  if (optind < argc)
+    {
+      printf ("non-option ARGV-elements: ");
+      while (optind < argc)
+	printf ("%s ", argv[optind++]);
+      printf ("\n");
+    }
+
+  exit (0);
+}
+
+#endif /* TEST */
diff --git a/src/kmk/getopt.h b/src/kmk/getopt.h
new file mode 100644
index 0000000..8713c12
--- /dev/null
+++ b/src/kmk/getopt.h
@@ -0,0 +1,132 @@
+/* Declarations for getopt.
+Copyright (C) 1989-2016 Free Software Foundation, Inc.
+
+NOTE: The canonical source of this file is maintained with the GNU C Library.
+Bugs can be reported to bug-glibc@gnu.org.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef FAKES_NO_GETOPT_H /* bird: hack for rhel4 unistd.h dragging in getopt.h */
+#ifndef _GETOPT_H
+#define _GETOPT_H 1
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/* For communication from `getopt' to the caller.
+   When `getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+extern char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to `getopt'.
+
+   On entry to `getopt', zero means this is the first call; initialize.
+
+   When `getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+extern int optind;
+
+/* Callers store zero here to inhibit the error message `getopt' prints
+   for unrecognized options.  */
+
+extern int opterr;
+
+/* Set to an option character which was unrecognized.  */
+
+extern int optopt;
+
+/* Describe the long-named options requested by the application.
+   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+   of `struct option' terminated by an element containing a name which is
+   zero.
+
+   The field `has_arg' is:
+   no_argument		(or 0) if the option does not take an argument,
+   required_argument	(or 1) if the option requires an argument,
+   optional_argument 	(or 2) if the option takes an optional argument.
+
+   If the field `flag' is not NULL, it points to a variable that is set
+   to the value given in the field `val' when the option is found, but
+   left unchanged if the option is not found.
+
+   To have a long-named option do something other than set an `int' to
+   a compiled-in constant, such as set a value from `optarg', set the
+   option's `flag' field to zero and its `val' field to a nonzero
+   value (the equivalent single-letter option character, if there is
+   one).  For long options that have a zero `flag' field, `getopt'
+   returns the contents of the `val' field.  */
+
+struct option
+{
+#if defined (__STDC__) && __STDC__
+  const char *name;
+#else
+  char *name;
+#endif
+  /* has_arg can't be an enum because some compilers complain about
+     type mismatches in all the code that assumes it is an int.  */
+  int has_arg;
+  int *flag;
+  int val;
+};
+
+/* Names for the values of the `has_arg' field of `struct option'.  */
+
+#define	no_argument		0
+#define required_argument	1
+#define optional_argument	2
+
+#if defined (__STDC__) && __STDC__
+#ifdef __GNU_LIBRARY__
+/* Many other libraries have conflicting prototypes for getopt, with
+   differences in the consts, in stdlib.h.  To avoid compilation
+   errors, only prototype getopt for the GNU C library.  */
+extern int getopt (int argc, char *const *argv, const char *shortopts);
+#else /* not __GNU_LIBRARY__ */
+extern int getopt ();
+#endif /* __GNU_LIBRARY__ */
+extern int getopt_long (int argc, char *const *argv, const char *shortopts,
+		        const struct option *longopts, int *longind);
+extern int getopt_long_only (int argc, char *const *argv,
+			     const char *shortopts,
+		             const struct option *longopts, int *longind);
+
+/* Internal only.  Users should not call this directly.  */
+extern int _getopt_internal (int argc, char *const *argv,
+			     const char *shortopts,
+		             const struct option *longopts, int *longind,
+			     int long_only);
+#else /* not __STDC__ */
+extern int getopt ();
+extern int getopt_long ();
+extern int getopt_long_only ();
+
+extern int _getopt_internal ();
+#endif /* __STDC__ */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* getopt.h */
+#endif /* bird hack */
diff --git a/src/kmk/getopt1.c b/src/kmk/getopt1.c
new file mode 100644
index 0000000..0e38b2f
--- /dev/null
+++ b/src/kmk/getopt1.c
@@ -0,0 +1,176 @@
+/* getopt_long and getopt_long_only entry points for GNU getopt.
+Copyright (C) 1987-1994, 1996-2016 Free Software Foundation, Inc.
+
+NOTE: The canonical source of this file is maintained with the GNU C Library.
+Bugs can be reported to bug-glibc@gnu.org.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "getopt.h"
+
+#if !defined __STDC__ || !__STDC__
+/* This is a separate conditional since some stdc systems
+   reject `defined (const)'.  */
+#ifndef const
+#define const
+#endif
+#endif
+
+#include <stdio.h>
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#define GETOPT_INTERFACE_VERSION 2
+#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
+#include <gnu-versions.h>
+#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
+#define ELIDE_CODE
+#endif
+#endif
+
+#ifndef ELIDE_CODE
+
+
+/* This needs to come after some library #include
+   to get __GNU_LIBRARY__ defined.  */
+#ifdef __GNU_LIBRARY__
+#include <stdlib.h>
+#endif
+
+#ifndef	NULL
+#define NULL 0
+#endif
+
+int
+getopt_long (int argc, char *const *argv, const char *options,
+             const struct option *long_options, int *opt_index)
+{
+  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
+}
+
+/* Like getopt_long, but '-' as well as '--' can indicate a long option.
+   If an option that starts with '-' (not '--') doesn't match a long option,
+   but does match a short option, it is parsed as a short option
+   instead.  */
+
+int
+getopt_long_only (int argc, char *const *argv, const char *options,
+                  const struct option *long_options, int *opt_index)
+{
+  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
+}
+
+
+#endif	/* Not ELIDE_CODE.  */
+
+#ifdef TEST
+
+#include <stdio.h>
+
+int
+main (int argc, char **argv)
+{
+  int c;
+  int digit_optind = 0;
+
+  while (1)
+    {
+      int this_option_optind = optind ? optind : 1;
+      int option_index = 0;
+      static struct option long_options[] =
+      {
+	{"add", 1, 0, 0},
+	{"append", 0, 0, 0},
+	{"delete", 1, 0, 0},
+	{"verbose", 0, 0, 0},
+	{"create", 0, 0, 0},
+	{"file", 1, 0, 0},
+	{0, 0, 0, 0}
+      };
+
+      c = getopt_long (argc, argv, "abc:d:0123456789",
+		       long_options, &option_index);
+      if (c == -1)
+	break;
+
+      switch (c)
+	{
+	case 0:
+	  printf ("option %s", long_options[option_index].name);
+	  if (optarg)
+	    printf (" with arg %s", optarg);
+	  printf ("\n");
+	  break;
+
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+	  if (digit_optind != 0 && digit_optind != this_option_optind)
+	    printf ("digits occur in two different argv-elements.\n");
+	  digit_optind = this_option_optind;
+	  printf ("option %c\n", c);
+	  break;
+
+	case 'a':
+	  printf ("option a\n");
+	  break;
+
+	case 'b':
+	  printf ("option b\n");
+	  break;
+
+	case 'c':
+	  printf ("option c with value '%s'\n", optarg);
+	  break;
+
+	case 'd':
+	  printf ("option d with value '%s'\n", optarg);
+	  break;
+
+	case '?':
+	  break;
+
+	default:
+	  printf ("?? getopt returned character code 0%o ??\n", c);
+	}
+    }
+
+  if (optind < argc)
+    {
+      printf ("non-option ARGV-elements: ");
+      while (optind < argc)
+	printf ("%s ", argv[optind++]);
+      printf ("\n");
+    }
+
+  exit (0);
+}
+
+#endif /* TEST */
diff --git a/src/kmk/gettext.h b/src/kmk/gettext.h
new file mode 100644
index 0000000..c48ffa0
--- /dev/null
+++ b/src/kmk/gettext.h
@@ -0,0 +1,57 @@
+/* Convenience header for conditional use of GNU <libintl.h>.
+Copyright (C) 1995-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBGETTEXT_H
+#define _LIBGETTEXT_H 1
+
+/* NLS can be disabled through the configure --disable-nls option.  */
+#if ENABLE_NLS
+
+/* Get declarations of GNU message catalog functions.  */
+# include <libintl.h>
+
+#else
+
+/* Disabled NLS.
+   The casts to 'const char *' serve the purpose of producing warnings
+   for invalid uses of the value returned from these functions.
+   On pre-ANSI systems without 'const', the config.h file is supposed to
+   contain "#define const".  */
+# define gettext(Msgid) ((const char *) (Msgid))
+# define dgettext(Domainname, Msgid) ((const char *) (Msgid))
+# define dcgettext(Domainname, Msgid, Category) ((const char *) (Msgid))
+# define ngettext(Msgid1, Msgid2, N) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define dngettext(Domainname, Msgid1, Msgid2, N) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define textdomain(Domainname) ((const char *) (Domainname))
+# define bindtextdomain(Domainname, Dirname) ((const char *) (Dirname))
+# define bind_textdomain_codeset(Domainname, Codeset) ((const char *) (Codeset))
+
+#endif
+
+/* A pseudo function call that serves as a marker for the automated
+   extraction of messages, but does not call gettext().  The run-time
+   translation is done at a different place in the code.
+   The argument, String, should be a literal string.  Concatenated strings
+   and other string expressions won't work.
+   The macro's expansion is not parenthesized, so that it is suitable as
+   initializer for static 'char[]' or 'const char[]' variables.  */
+#define gettext_noop(String) String
+
+#endif /* _LIBGETTEXT_H */
diff --git a/src/kmk/glob/COPYING.LIB b/src/kmk/glob/COPYING.LIB
new file mode 100644
index 0000000..bbe3fe1
--- /dev/null
+++ b/src/kmk/glob/COPYING.LIB
@@ -0,0 +1,481 @@
+		  GNU LIBRARY GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1991 Free Software Foundation, Inc.
+                    675 Mass Ave, Cambridge, MA 02139, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the library GPL.  It is
+ numbered 2 because it goes with version 2 of the ordinary GPL.]
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+  This license, the Library General Public License, applies to some
+specially designated Free Software Foundation software, and to any
+other libraries whose authors decide to use it.  You can use it for
+your libraries, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if
+you distribute copies of the library, or if you modify it.
+
+  For example, if you distribute copies of the library, whether gratis
+or for a fee, you must give the recipients all the rights that we gave
+you.  You must make sure that they, too, receive or can get the source
+code.  If you link a program with the library, you must provide
+complete object files to the recipients so that they can relink them
+with the library, after making changes to the library and recompiling
+it.  And you must show them these terms so they know their rights.
+
+  Our method of protecting your rights has two steps: (1) copyright
+the library, and (2) offer you this license which gives you legal
+permission to copy, distribute and/or modify the library.
+
+  Also, for each distributor's protection, we want to make certain
+that everyone understands that there is no warranty for this free
+library.  If the library is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original
+version, so that any problems introduced by others will not reflect on
+the original authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that companies distributing free
+software will individually obtain patent licenses, thus in effect
+transforming the program into proprietary software.  To prevent this,
+we have made it clear that any patent must be licensed for everyone's
+free use or not licensed at all.
+
+  Most GNU software, including some libraries, is covered by the ordinary
+GNU General Public License, which was designed for utility programs.  This
+license, the GNU Library General Public License, applies to certain
+designated libraries.  This license is quite different from the ordinary
+one; be sure to read it in full, and don't assume that anything in it is
+the same as in the ordinary license.
+
+  The reason we have a separate public license for some libraries is that
+they blur the distinction we usually make between modifying or adding to a
+program and simply using it.  Linking a program with a library, without
+changing the library, is in some sense simply using the library, and is
+analogous to running a utility program or application program.  However, in
+a textual and legal sense, the linked executable is a combined work, a
+derivative of the original library, and the ordinary General Public License
+treats it as such.
+
+  Because of this blurred distinction, using the ordinary General
+Public License for libraries did not effectively promote software
+sharing, because most developers did not use the libraries.  We
+concluded that weaker conditions might promote sharing better.
+
+  However, unrestricted linking of non-free programs would deprive the
+users of those programs of all benefit from the free status of the
+libraries themselves.  This Library General Public License is intended to
+permit developers of non-free programs to use free libraries, while
+preserving your freedom as a user of such programs to change the free
+libraries that are incorporated in them.  (We have not seen how to achieve
+this as regards changes in header files, but we have achieved it as regards
+changes in the actual functions of the Library.)  The hope is that this
+will lead to faster development of free libraries.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.  Pay close attention to the difference between a
+"work based on the library" and a "work that uses the library".  The
+former contains code derived from the library, while the latter only
+works together with the library.
+
+  Note that it is possible for a library to be covered by the ordinary
+General Public License rather than by this special one.
+
+		  GNU LIBRARY GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License Agreement applies to any software library which
+contains a notice placed by the copyright holder or other authorized
+party saying it may be distributed under the terms of this Library
+General Public License (also called "this License").  Each licensee is
+addressed as "you".
+
+  A "library" means a collection of software functions and/or data
+prepared so as to be conveniently linked with application programs
+(which use some of those functions and data) to form executables.
+
+  The "Library", below, refers to any such software library or work
+which has been distributed under these terms.  A "work based on the
+Library" means either the Library or any derivative work under
+copyright law: that is to say, a work containing the Library or a
+portion of it, either verbatim or with modifications and/or translated
+straightforwardly into another language.  (Hereinafter, translation is
+included without limitation in the term "modification".)
+
+  "Source code" for a work means the preferred form of the work for
+making modifications to it.  For a library, complete source code means
+all the source code for all modules it contains, plus any associated
+interface definition files, plus the scripts used to control compilation
+and installation of the library.
+
+  Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running a program using the Library is not restricted, and output from
+such a program is covered only if its contents constitute a work based
+on the Library (independent of the use of the Library in a tool for
+writing it).  Whether that is true depends on what the Library does
+and what the program that uses the Library does.
+
+  1. You may copy and distribute verbatim copies of the Library's
+complete source code as you receive it, in any medium, provided that
+you conspicuously and appropriately publish on each copy an
+appropriate copyright notice and disclaimer of warranty; keep intact
+all the notices that refer to this License and to the absence of any
+warranty; and distribute a copy of this License along with the
+Library.
+
+  You may charge a fee for the physical act of transferring a copy,
+and you may at your option offer warranty protection in exchange for a
+fee.
+
+  2. You may modify your copy or copies of the Library or any portion
+of it, thus forming a work based on the Library, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) The modified work must itself be a software library.
+
+    b) You must cause the files modified to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    c) You must cause the whole of the work to be licensed at no
+    charge to all third parties under the terms of this License.
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+    d) If a facility in the modified Library refers to a function or a
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+    is invoked, then you must make a good faith effort to ensure that,
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+    its purpose remains meaningful.
+
+    (For example, a function in a library to compute square roots has
+    a purpose that is entirely well-defined independent of the
+    application.  Therefore, Subsection 2d requires that any
+    application-supplied function or table used by this function must
+    be optional: if the application does not supply it, the square
+    root function must still compute square roots.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Library,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Library, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote
+it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Library.
+
+In addition, mere aggregation of another work not based on the Library
+with the Library (or with a work based on the Library) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may opt to apply the terms of the ordinary GNU General Public
+License instead of this License to a given copy of the Library.  To do
+this, you must alter all the notices that refer to this License, so
+that they refer to the ordinary GNU General Public License, version 2,
+instead of to this License.  (If a newer version than version 2 of the
+ordinary GNU General Public License has appeared, then you can specify
+that version instead if you wish.)  Do not make any other change in
+these notices.
+
+  Once this change is made in a given copy, it is irreversible for
+that copy, so the ordinary GNU General Public License applies to all
+subsequent copies and derivative works made from that copy.
+
+  This option is useful when you wish to copy part of the code of
+the Library into a program that is not a library.
+
+  4. You may copy and distribute the Library (or a portion or
+derivative of it, under Section 2) in object code or executable form
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+it with the complete corresponding machine-readable source code, which
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+medium customarily used for software interchange.
+
+  If distribution of object code is made by offering access to copy
+from a designated place, then offering equivalent access to copy the
+source code from the same place satisfies the requirement to
+distribute the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
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+  13. The Free Software Foundation may publish revised and/or new
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+
+  If you develop a new library, and you want it to be of the greatest
+possible use to the public, we recommend making it free software that
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+  To apply these terms, attach the following notices to the library.  It is
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+convey the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
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+    <one line to give the library's name and a brief idea of what it does.>
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+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public
+    License along with this library; if not, write to the Free
+    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
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+necessary.  Here is a sample; alter the names:
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+  Yoyodyne, Inc., hereby disclaims all copyright interest in the
+  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
+
+That's all there is to it!
diff --git a/src/kmk/glob/ChangeLog b/src/kmk/glob/ChangeLog
new file mode 100644
index 0000000..c543c85
--- /dev/null
+++ b/src/kmk/glob/ChangeLog
@@ -0,0 +1,191 @@
+2013-10-20  Paul Smith  <psmith@gnu.org>
+
+	* glob.c (glob): Cherry-pick a471e96a5352a5f0bde6d32dd36d33524811a2b1
+	from git://sourceware.org/git/glibc.git to fix SV 18123,
+	https://sourceware.org/bugzilla/show_bug.cgi?id=10278
+
+2008-09-28  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	* glob.c (my_realloc) [__DJGPP__]: Don't define, and don't
+	redefine realloc to call it, since the DJGPP's realloc handles
+	NULL pointers correctly.
+
+2007-12-22  Juan Manuel Guerrero  <juan.guerrero@gmx.de>  (tiny change)
+
+	* glob.c [__GNU_LIBRARY__ && __DJGPP__]: Add a realloc
+	declaration that matches the one in the DJGPP libc.
+
+2006-02-24  Eli Zaretskii  <eliz@gnu.org>
+
+	* glob.c (my_malloc) [WINDOWS32]: Provide a full ISO C prototype,
+	to avoid compiler warnings.
+
+2005-06-25  Paul D. Smith  <psmith@gnu.org>
+
+	* fnmatch.h, glob.h [WINDOWS32]: Fix ifdefs in headers.
+	Fixes Savannah bug #13477.
+
+2005-03-11  Paul D. Smith  <psmith@gnu.org>
+
+	* glob.c (glob_in_dir): Change FNM_CASEFOLD to be enabled if
+	HAVE_CASE_INSENSITIVE_FS is defined.
+
+2003-01-30  Paul D. Smith  <psmith@gnu.org>
+
+	* glob.h: Patch for FreeBSD by Mike Barcroft <mike@freebsd.org>
+	Reported by Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>.  On
+	FreeBSD, declare __size_t to simply size_t.
+
+2002-04-22  Paul D. Smith  <psmith@gnu.org>
+
+	* Makefile.am: Use automake 1.6.
+	Use new automake condition USE_LOCAL_GLOB to decide whether or not
+	to build the local GNU glob library or use the system one.
+
+1999-09-12  Paul D. Smith  <psmith@gnu.org>
+
+	* fnmatch.c: Last GLIBC version wouldn't compile outside of GLIBC
+	(undefined reference to internal_function).  Update to the latest
+	version
+
+1999-09-11  Paul Eggert  <eggert@twinsun.com>
+
+	* glob.h (glob): If #defining to glob64, do this before
+	declaring it, so that all declarations and uses match, and
+	do not declare glob64, to avoid a declaration clash.
+	(globfree): Likewise with globfree64.
+
+1999-09-08  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* glob.c (prefix_array) [__MSDOS__,WINDOWS32]: Keep the trailing
+	slash unless DIRNAME is just "x:/".
+
+1999-09-06  Paul D. Smith  <psmith@gnu.org>
+
+	* fnmatch.c: Update to latest version from GLIBC.
+
+1999-07-21  Paul D. Smith  <psmith@gnu.org>
+
+	* glob.c, glob.h, fnmatch.c, fnmatch.h: Update to latest version
+	from GLIBC.
+
+	* fnmatch.c (internal_fnmatch): Use K&R definition syntax, not ANSI.
+	(__strchrnul): This won't exist outside GLIBC, so create one.
+
+	* glob.c: Move getlogin{,_r} prototypes below glob.h to get __P()
+	macro.
+
+1998-08-05  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Remove; configuration for glob is handled by the
+	make configure.in.
+
+1998-07-29  Paul D. Smith  <psmith@gnu.org>
+
+	* glob.c, fnmatch.c: New versions from the GLIBC folks (Ulrich
+	Drepper).  Fixes a bug reported by Eli Zaretski.  Integrates
+	DOS/Windows32 support.
+
+1998-07-27  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* glob.c (glob): Cast away const on assignment of pattern to dirname.
+	Cast the return type of __alloca() for traditional C compilers.
+
+1998-07-23  Paul D. Smith  <psmith@gnu.org>
+
+	* glob.c, fnmatch.c: New versions of these files from the GLIBC
+	folks (Ulrich Drepper).  Had to re-integrate some DOS/Windows
+	code.
+
+1998-07-10  Paul D. Smith  <psmith@gnu.org>
+
+	* glob.c (glob_in_dir): If no meta chars exist in PATTERN and
+	GLOB_NOCHECK is present, don't look for the file--whether it's
+	found or not, we'll always return it, so why bother searching?
+
+	Also, if we are searching and there are no meta chars, don't
+	bother trying fnmatch() if the strcmp() fails.
+
+1998-05-30  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* glob.c (glob) [__MSDOS__, WINDOWS32]: Compute the directory and
+	filename parts of the pattern correctly when it includes a drive
+	spec.  Disallow wildcards in the drive spec.  Prevent recursion
+	when dirname is of the form "d:/" or "d:".
+	(prefix_array) [__MSDOS__, WINDOWS32]: Don't append a slash to
+	"d:/" and "d:".
+
+1998-05-13  Paul D. Smith  <psmith@gnu.org>
+
+	* SMakefile, Makefile.ami, glob.c, glob.h, fnmatch.c: Updated from
+	the latest glibc version.
+
+1998-04-17  Paul D. Smith  <psmith@gnu.org>
+
+	* configure.in: Create a config.h file instead of setting things
+	on the compile line.  This is because when build.sh runs it merely
+	passes -DHAVE_CONFIG_H to the glob files, just as it does to the
+	make files.
+	* config.h.in: Created by autoheader.
+
+Tue Aug 12 10:52:34 1997  Paul D. Smith  <psmith@baynetworks.com>
+
+	* configure.in: Require autoconf 2.12.
+
+	* glob: Updates from latest GNU libc glob code.
+
+	* glob.c,glob.h,fnmatch.h: Change all WIN32 references to WINDOWS32.
+
+	* glob.h: OSF4 defines macros in such a way that GLOB_ALTDIRFUNC
+	is not defined.  Added a test to the #if which defines it if
+	_GNU_SOURCE is defined; that's set by both glob.c and GNU make.
+
+	* glob.c: SunOS4 w/ cc needs #include <stdio.h>, since assert.h
+	requires stderr but doesn't include stdio.h :-/.
+	(next_brace_sub): De-protoize function definition.
+	(glob): Cast __alloca(); on SunOS4 it uses the default return type
+	of int.
+	(glob): Irix defines getlogin_r() to return a char*; move the
+	extern for that into the _LIBC area since it isn't used except in
+	LIBC anyway.  Likewise, move extern getlogin() into the "else".
+
+Sat Jul 20 21:55:31 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	Win32 hacks from <Rob_Tulloh@tivoli.com>.
+	* posix/glob.c [WIN32]: Don't include <pwd.h>; don't use d_ino;
+	use void * for my_realloc; include <malloc.h> for alloca.
+	(glob) [WIN32]: Use "c:/users/default" for ~ if no HOME variable.
+	* posix/fnmatch.h [WIN32]: Use prototypes even if [!__STDC__].
+	* posix/glob.h: Likewise.
+
+Fri Jul 19 16:56:41 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* posix/glob.h [!_AMIGA && !VMS]: Check this instead of just [!_AMIGA]
+	for `struct stat;' forward decl.
+
+Sat Jun 22 10:44:09 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* posix/glob.c: Include <alloca.h> only [HAVE_ALLOCA_H], not [sparc].
+
+Fri Jun 21 00:27:51 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* posix/fnmatch.c (fnmatch): Fix \*[*?]+ case to increment name ptr
+	only for ?s, not for *s.  Fix from Chet Ramey.
+
+
+Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
+Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/glob/Makefile.am b/src/kmk/glob/Makefile.am
new file mode 100644
index 0000000..93fd60a
--- /dev/null
+++ b/src/kmk/glob/Makefile.am
@@ -0,0 +1,30 @@
+# -*-Makefile-*-, or close enough
+# Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+AUTOMAKE_OPTIONS =	foreign
+
+# Only build the library when the system doesn't already have GNU glob.
+if USE_LOCAL_GLOB
+  noinst_LIBRARIES =	libglob.a
+endif
+
+libglob_a_SOURCES =	glob.c glob.h fnmatch.c fnmatch.h
+
+
+EXTRA_DIST =		COPYING.LIB Makefile.ami SCOPTIONS SMakefile \
+			configure.bat
diff --git a/src/kmk/glob/Makefile.ami b/src/kmk/glob/Makefile.ami
new file mode 100644
index 0000000..3fbf7e5
--- /dev/null
+++ b/src/kmk/glob/Makefile.ami
@@ -0,0 +1,67 @@
+# Makefile for standalone libglob.a (fnmatch, glob).             -*-Makefile-*-
+# Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2007 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Ultrix 2.2 make doesn't expand the value of VPATH.
+VPATH = /glob/
+# This must repeat the value, because configure will remove `VPATH = .'.
+srcdir = /glob/
+
+CC = sc
+RM = delete
+CPPFLAGS =
+CFLAGS =
+
+# Information determined by configure.
+DEFS = Define HAVE_HEADER_STDC Define HAVE_UNISTD_H Define HAVE_STRING_H \
+	Define HAVE_DIRENT_H
+
+# How to invoke ar.
+AR = join
+ARFLAGS = as
+
+# How to invoke ranlib.
+RANLIB = ;
+
+.PHONY: all
+all: glob.lib
+
+glob.lib : glob.o fnmatch.o
+	$(AR) $(ARFLAGS) $@ glob.o fnmatch.o
+	$(RANLIB) $@
+
+# For some reason, Unix make wants the dependencies on the source files.
+# Otherwise it refuses to use an implicit rule!
+# And, get this: it doesn't work to use $(srcdir)foo.c!!
+glob.o: $(srcdir)glob.h $(srcdir)fnmatch.h glob.c
+fnmatch.o: $(srcdir)fnmatch.h fnmatch.c
+
+OUTPUT_OPTION =
+.c.o:
+	$(CC) IDir "" \
+	      $(DEFS) $(CPPFLAGS) $(CFLAGS) $< $(OUTPUT_OPTION)
+
+.PHONY: clean realclean glob-clean glob-realclean distclean
+clean glob-clean:
+	-$(RM) glob.lib "#?.o" core
+distclean glob-realclean: clean
+	-$(RM) TAGS tags Makefile config.status config.h config.log
+realcean: distclean
+
+# For inside the C library.
+glob.tar glob.tar.Z:
+	$(MAKE) -C .. $@
diff --git a/src/kmk/glob/SCOPTIONS b/src/kmk/glob/SCOPTIONS
new file mode 100644
index 0000000..f89daae
--- /dev/null
+++ b/src/kmk/glob/SCOPTIONS
@@ -0,0 +1,13 @@
+ERRORREXX
+OPTIMIZE
+NOVERSION
+OPTIMIZERTIME
+OPTIMIZERALIAS
+DEFINE INCLUDEDIR="include:"
+DEFINE LIBDIR="lib:"
+DEFINE NO_ALLOCA
+DEFINE NO_FLOAT
+DEFINE NO_ARCHIVES
+IGNORE=161
+IGNORE=100
+STARTUP=cres
diff --git a/src/kmk/glob/SMakefile b/src/kmk/glob/SMakefile
new file mode 100644
index 0000000..0476a15
--- /dev/null
+++ b/src/kmk/glob/SMakefile
@@ -0,0 +1,67 @@
+# Makefile for standalone distribution of libglob.a (fnmatch, glob).
+# Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2007 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Ultrix 2.2 make doesn't expand the value of VPATH.
+VPATH = /glob/
+# This must repeat the value, because configure will remove `VPATH = .'.
+srcdir = /glob/
+
+CC = sc
+CPPFLAGS =
+CFLAGS =
+MAKE = smake
+RM = delete
+
+# Information determined by configure.
+DEFS = Define HAVE_HEADER_STDC Define HAVE_UNISTD_H Define HAVE_STRING_H \
+	Define HAVE_DIRENT_H
+
+# How to invoke ar.
+AR = join
+ARFLAGS = as
+
+# How to invoke ranlib.
+RANLIB = ;
+
+.PHONY: all
+all: glob.lib
+
+glob.lib : glob.o fnmatch.o
+	$(AR) $(ARFLAGS) $@ glob.o fnmatch.o
+	$(RANLIB) $@
+
+# For some reason, Unix make wants the dependencies on the source files.
+# Otherwise it refuses to use an implicit rule!
+# And, get this: it doesn't work to use $(srcdir)foo.c!!
+glob.o: $(srcdir)glob.h $(srcdir)fnmatch.h glob.c
+fnmatch.o: $(srcdir)fnmatch.h fnmatch.c
+
+.c.o:
+	$(CC) IDir "" \
+	      $(DEFS) $(CPPFLAGS) $(CFLAGS) $< $(OUTPUT_OPTION)
+
+.PHONY: clean realclean glob-clean glob-realclean distclean
+clean glob-clean:
+	-$(RM) -f glob.lib *.o core
+distclean glob-realclean: clean
+	-$(RM) -f TAGS tags Makefile config.status config.h config.log
+realcean: distclean
+
+# For inside the C library.
+glob.tar glob.tar.Z:
+	$(MAKE) -C .. $@
diff --git a/src/kmk/glob/configure.bat b/src/kmk/glob/configure.bat
new file mode 100644
index 0000000..672d733
--- /dev/null
+++ b/src/kmk/glob/configure.bat
@@ -0,0 +1,43 @@
+@echo off

+rem Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,

+rem 2004, 2005, 2006, 2007 Free Software Foundation, Inc.

+rem This file is part of GNU Make.

+rem

+rem GNU Make is free software; you can redistribute it and/or modify it under

+rem the terms of the GNU General Public License as published by the Free

+rem Software Foundation; either version 3 of the License, or (at your option)

+rem any later version.

+rem

+rem GNU Make is distributed in the hope that it will be useful, but WITHOUT

+rem ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

+rem FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.

+rem more details.

+rem

+rem You should have received a copy of the GNU General Public License along

+rem with this program.  If not, see <http://www.gnu.org/licenses/>.

+

+echo Configuring glob for DJGPP

+rem This batch file assumes a unix-type "sed" program

+

+echo # Makefile generated by "configure.bat"> Makefile

+

+if exist config.sed del config.sed

+

+echo "s/@srcdir@/./					">> config.sed

+echo "s/@CC@/gcc/					">> config.sed

+echo "s/@CFLAGS@/-O2 -g/				">> config.sed

+echo "s/@CPPFLAGS@/-DHAVE_CONFIG_H -I../		">> config.sed

+echo "s/@AR@/ar/					">> config.sed

+echo "s/@RANLIB@/ranlib/				">> config.sed

+echo "s/@LDFLAGS@//					">> config.sed

+echo "s/@DEFS@//					">> config.sed

+echo "s/@ALLOCA@//					">> config.sed

+echo "s/@LIBS@//					">> config.sed

+echo "s/@LIBOBJS@//					">> config.sed

+echo "s/^Makefile *:/_Makefile:/			">> config.sed

+echo "s/^config.h *:/_config.h:/			">> config.sed

+

+sed -e "s/^\"//" -e "s/\"$//" -e "s/[ 	]*$//" config.sed > config2.sed

+sed -f config2.sed Makefile.in >> Makefile

+del config.sed

+del config2.sed

diff --git a/src/kmk/glob/fnmatch.c b/src/kmk/glob/fnmatch.c
new file mode 100644
index 0000000..b346e10
--- /dev/null
+++ b/src/kmk/glob/fnmatch.c
@@ -0,0 +1,489 @@
+/* Copyright (C) 1991, 1992, 1993, 1996, 1997, 1998, 1999 Free Software
+Foundation, Inc.
+This file is part of the GNU C Library.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with this library; see the file COPYING.LIB.  If not, write to the Free
+Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Enable GNU extensions in fnmatch.h.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE	1
+#endif
+
+#include <errno.h>
+#include <fnmatch.h>
+#include <ctype.h>
+
+#if HAVE_STRING_H || defined _LIBC
+# include <string.h>
+#else
+# include <strings.h>
+#endif
+
+#if defined STDC_HEADERS || defined _LIBC
+# include <stdlib.h>
+#endif
+
+/* For platform which support the ISO C amendement 1 functionality we
+   support user defined character classes.  */
+#if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
+/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>.  */
+# include <wchar.h>
+# include <wctype.h>
+#endif
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#if defined _LIBC || !defined __GNU_LIBRARY__ || 1 /* bird: Same as for glob.c, don't want trouble. */
+
+
+# if defined STDC_HEADERS || !defined isascii
+#  define ISASCII(c) 1
+# else
+#  define ISASCII(c) isascii(c)
+# endif
+
+# ifdef isblank
+#  define ISBLANK(c) (ISASCII (c) && isblank (c))
+# else
+#  define ISBLANK(c) ((c) == ' ' || (c) == '\t')
+# endif
+# ifdef isgraph
+#  define ISGRAPH(c) (ISASCII (c) && isgraph (c))
+# else
+#  define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
+# endif
+
+# define ISPRINT(c) (ISASCII (c) && isprint (c))
+# define ISDIGIT(c) (ISASCII (c) && isdigit (c))
+# define ISALNUM(c) (ISASCII (c) && isalnum (c))
+# define ISALPHA(c) (ISASCII (c) && isalpha (c))
+# define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
+# define ISLOWER(c) (ISASCII (c) && islower (c))
+# define ISPUNCT(c) (ISASCII (c) && ispunct (c))
+# define ISSPACE(c) (ISASCII (c) && isspace (c))
+# define ISUPPER(c) (ISASCII (c) && isupper (c))
+# define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
+
+# define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
+
+# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
+/* The GNU C library provides support for user-defined character classes
+   and the functions from ISO C amendement 1.  */
+#  ifdef CHARCLASS_NAME_MAX
+#   define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
+#  else
+/* This shouldn't happen but some implementation might still have this
+   problem.  Use a reasonable default value.  */
+#   define CHAR_CLASS_MAX_LENGTH 256
+#  endif
+
+#  ifdef _LIBC
+#   define IS_CHAR_CLASS(string) __wctype (string)
+#  else
+#   define IS_CHAR_CLASS(string) wctype (string)
+#  endif
+# else
+#  define CHAR_CLASS_MAX_LENGTH  6 /* Namely, `xdigit'.  */
+
+#  define IS_CHAR_CLASS(string)						      \
+   (STREQ (string, "alpha") || STREQ (string, "upper")			      \
+    || STREQ (string, "lower") || STREQ (string, "digit")		      \
+    || STREQ (string, "alnum") || STREQ (string, "xdigit")		      \
+    || STREQ (string, "space") || STREQ (string, "print")		      \
+    || STREQ (string, "punct") || STREQ (string, "graph")		      \
+    || STREQ (string, "cntrl") || STREQ (string, "blank"))
+# endif
+
+/* Avoid depending on library functions or files
+   whose names are inconsistent.  */
+
+# if !defined _LIBC && !defined getenv && !defined _MSC_VER
+extern char *getenv ();
+# endif
+
+# ifndef errno
+extern int errno;
+# endif
+
+/* This function doesn't exist on most systems.  */
+
+# if !defined HAVE___STRCHRNUL && !defined _LIBC
+static char *
+__strchrnul (s, c)
+     const char *s;
+     int c;
+{
+  char *result = strchr (s, c);
+  if (result == NULL)
+    result = strchr (s, '\0');
+  return result;
+}
+# endif
+
+# ifndef internal_function
+/* Inside GNU libc we mark some function in a special way.  In other
+   environments simply ignore the marking.  */
+#  define internal_function
+# endif
+
+/* Match STRING against the filename pattern PATTERN, returning zero if
+   it matches, nonzero if not.  */
+static int internal_fnmatch __P ((const char *pattern, const char *string,
+				  int no_leading_period, int flags))
+     internal_function;
+static int
+internal_function
+internal_fnmatch (pattern, string, no_leading_period, flags)
+     const char *pattern;
+     const char *string;
+     int no_leading_period;
+     int flags;
+{
+  register const char *p = pattern, *n = string;
+  register unsigned char c;
+
+/* Note that this evaluates C many times.  */
+# ifdef _LIBC
+#  define FOLD(c) ((flags & FNM_CASEFOLD) ? tolower (c) : (c))
+# else
+#  define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))
+# endif
+
+  while ((c = *p++) != '\0')
+    {
+      c = FOLD (c);
+
+      switch (c)
+	{
+	case '?':
+	  if (*n == '\0')
+	    return FNM_NOMATCH;
+	  else if (*n == '/' && (flags & FNM_FILE_NAME))
+	    return FNM_NOMATCH;
+	  else if (*n == '.' && no_leading_period
+		   && (n == string
+		       || (n[-1] == '/' && (flags & FNM_FILE_NAME))))
+	    return FNM_NOMATCH;
+	  break;
+
+	case '\\':
+	  if (!(flags & FNM_NOESCAPE))
+	    {
+	      c = *p++;
+	      if (c == '\0')
+		/* Trailing \ loses.  */
+		return FNM_NOMATCH;
+	      c = FOLD (c);
+	    }
+	  if (FOLD ((unsigned char) *n) != c)
+	    return FNM_NOMATCH;
+	  break;
+
+	case '*':
+	  if (*n == '.' && no_leading_period
+	      && (n == string
+		  || (n[-1] == '/' && (flags & FNM_FILE_NAME))))
+	    return FNM_NOMATCH;
+
+	  for (c = *p++; c == '?' || c == '*'; c = *p++)
+	    {
+	      if (*n == '/' && (flags & FNM_FILE_NAME))
+		/* A slash does not match a wildcard under FNM_FILE_NAME.  */
+		return FNM_NOMATCH;
+	      else if (c == '?')
+		{
+		  /* A ? needs to match one character.  */
+		  if (*n == '\0')
+		    /* There isn't another character; no match.  */
+		    return FNM_NOMATCH;
+		  else
+		    /* One character of the string is consumed in matching
+		       this ? wildcard, so *??? won't match if there are
+		       less than three characters.  */
+		    ++n;
+		}
+	    }
+
+	  if (c == '\0')
+	    /* The wildcard(s) is/are the last element of the pattern.
+	       If the name is a file name and contains another slash
+	       this does mean it cannot match.  */
+	    return ((flags & FNM_FILE_NAME) && strchr (n, '/') != NULL
+		    ? FNM_NOMATCH : 0);
+	  else
+	    {
+	      const char *endp;
+
+	      endp = __strchrnul (n, (flags & FNM_FILE_NAME) ? '/' : '\0');
+
+	      if (c == '[')
+		{
+		  int flags2 = ((flags & FNM_FILE_NAME)
+				? flags : (flags & ~FNM_PERIOD));
+
+		  for (--p; n < endp; ++n)
+		    if (internal_fnmatch (p, n,
+					  (no_leading_period
+					   && (n == string
+					       || (n[-1] == '/'
+						   && (flags
+						       & FNM_FILE_NAME)))),
+					  flags2)
+			== 0)
+		      return 0;
+		}
+	      else if (c == '/' && (flags & FNM_FILE_NAME))
+		{
+		  while (*n != '\0' && *n != '/')
+		    ++n;
+		  if (*n == '/'
+		      && (internal_fnmatch (p, n + 1, flags & FNM_PERIOD,
+					    flags) == 0))
+		    return 0;
+		}
+	      else
+		{
+		  int flags2 = ((flags & FNM_FILE_NAME)
+				? flags : (flags & ~FNM_PERIOD));
+
+		  if (c == '\\' && !(flags & FNM_NOESCAPE))
+		    c = *p;
+		  c = FOLD (c);
+		  for (--p; n < endp; ++n)
+		    if (FOLD ((unsigned char) *n) == c
+			&& (internal_fnmatch (p, n,
+					      (no_leading_period
+					       && (n == string
+						   || (n[-1] == '/'
+						       && (flags
+							   & FNM_FILE_NAME)))),
+					      flags2) == 0))
+		      return 0;
+		}
+	    }
+
+	  /* If we come here no match is possible with the wildcard.  */
+	  return FNM_NOMATCH;
+
+	case '[':
+	  {
+	    /* Nonzero if the sense of the character class is inverted.  */
+	    static int posixly_correct;
+	    register int not;
+	    char cold;
+
+	    if (posixly_correct == 0)
+	      posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1;
+
+	    if (*n == '\0')
+	      return FNM_NOMATCH;
+
+	    if (*n == '.' && no_leading_period && (n == string
+						   || (n[-1] == '/'
+						       && (flags
+							   & FNM_FILE_NAME))))
+	      return FNM_NOMATCH;
+
+	    if (*n == '/' && (flags & FNM_FILE_NAME))
+	      /* `/' cannot be matched.  */
+	      return FNM_NOMATCH;
+
+	    not = (*p == '!' || (posixly_correct < 0 && *p == '^'));
+	    if (not)
+	      ++p;
+
+	    c = *p++;
+	    for (;;)
+	      {
+		unsigned char fn = FOLD ((unsigned char) *n);
+
+		if (!(flags & FNM_NOESCAPE) && c == '\\')
+		  {
+		    if (*p == '\0')
+		      return FNM_NOMATCH;
+		    c = FOLD ((unsigned char) *p);
+		    ++p;
+
+		    if (c == fn)
+		      goto matched;
+		  }
+		else if (c == '[' && *p == ':')
+		  {
+		    /* Leave room for the null.  */
+		    char str[CHAR_CLASS_MAX_LENGTH + 1];
+		    size_t c1 = 0;
+# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
+		    wctype_t wt;
+# endif
+		    const char *startp = p;
+
+		    for (;;)
+		      {
+			if (c1 == CHAR_CLASS_MAX_LENGTH)
+			  /* The name is too long and therefore the pattern
+			     is ill-formed.  */
+			  return FNM_NOMATCH;
+
+			c = *++p;
+			if (c == ':' && p[1] == ']')
+			  {
+			    p += 2;
+			    break;
+			  }
+			if (c < 'a' || c >= 'z')
+			  {
+			    /* This cannot possibly be a character class name.
+			       Match it as a normal range.  */
+			    p = startp;
+			    c = '[';
+			    goto normal_bracket;
+			  }
+			str[c1++] = c;
+		      }
+		    str[c1] = '\0';
+
+# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
+		    wt = IS_CHAR_CLASS (str);
+		    if (wt == 0)
+		      /* Invalid character class name.  */
+		      return FNM_NOMATCH;
+
+		    if (__iswctype (__btowc ((unsigned char) *n), wt))
+		      goto matched;
+# else
+		    if ((STREQ (str, "alnum") && ISALNUM ((unsigned char) *n))
+			|| (STREQ (str, "alpha") && ISALPHA ((unsigned char) *n))
+			|| (STREQ (str, "blank") && ISBLANK ((unsigned char) *n))
+			|| (STREQ (str, "cntrl") && ISCNTRL ((unsigned char) *n))
+			|| (STREQ (str, "digit") && ISDIGIT ((unsigned char) *n))
+			|| (STREQ (str, "graph") && ISGRAPH ((unsigned char) *n))
+			|| (STREQ (str, "lower") && ISLOWER ((unsigned char) *n))
+			|| (STREQ (str, "print") && ISPRINT ((unsigned char) *n))
+			|| (STREQ (str, "punct") && ISPUNCT ((unsigned char) *n))
+			|| (STREQ (str, "space") && ISSPACE ((unsigned char) *n))
+			|| (STREQ (str, "upper") && ISUPPER ((unsigned char) *n))
+			|| (STREQ (str, "xdigit") && ISXDIGIT ((unsigned char) *n)))
+		      goto matched;
+# endif
+		  }
+		else if (c == '\0')
+		  /* [ (unterminated) loses.  */
+		  return FNM_NOMATCH;
+		else
+		  {
+		  normal_bracket:
+		    if (FOLD (c) == fn)
+		      goto matched;
+
+		    cold = c;
+		    c = *p++;
+
+		    if (c == '-' && *p != ']')
+		      {
+			/* It is a range.  */
+			unsigned char cend = *p++;
+			if (!(flags & FNM_NOESCAPE) && cend == '\\')
+			  cend = *p++;
+			if (cend == '\0')
+			  return FNM_NOMATCH;
+
+			if (cold <= fn && fn <= FOLD (cend))
+			  goto matched;
+
+			c = *p++;
+		      }
+		  }
+
+		if (c == ']')
+		  break;
+	      }
+
+	    if (!not)
+	      return FNM_NOMATCH;
+	    break;
+
+	  matched:
+	    /* Skip the rest of the [...] that already matched.  */
+	    while (c != ']')
+	      {
+		if (c == '\0')
+		  /* [... (unterminated) loses.  */
+		  return FNM_NOMATCH;
+
+		c = *p++;
+		if (!(flags & FNM_NOESCAPE) && c == '\\')
+		  {
+		    if (*p == '\0')
+		      return FNM_NOMATCH;
+		    /* XXX 1003.2d11 is unclear if this is right.  */
+		    ++p;
+		  }
+		else if (c == '[' && *p == ':')
+		  {
+		    do
+		      if (*++p == '\0')
+			return FNM_NOMATCH;
+		    while (*p != ':' || p[1] == ']');
+		    p += 2;
+		    c = *p;
+		  }
+	      }
+	    if (not)
+	      return FNM_NOMATCH;
+	  }
+	  break;
+
+	default:
+	  if (c != FOLD ((unsigned char) *n))
+	    return FNM_NOMATCH;
+	}
+
+      ++n;
+    }
+
+  if (*n == '\0')
+    return 0;
+
+  if ((flags & FNM_LEADING_DIR) && *n == '/')
+    /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz".  */
+    return 0;
+
+  return FNM_NOMATCH;
+
+# undef FOLD
+}
+
+
+int
+fnmatch (pattern, string, flags)
+     const char *pattern;
+     const char *string;
+     int flags;
+{
+  return internal_fnmatch (pattern, string, flags & FNM_PERIOD, flags);
+}
+
+#endif	/* _LIBC or not __GNU_LIBRARY__.  */
diff --git a/src/kmk/glob/fnmatch.h b/src/kmk/glob/fnmatch.h
new file mode 100644
index 0000000..a788c8e
--- /dev/null
+++ b/src/kmk/glob/fnmatch.h
@@ -0,0 +1,85 @@
+/* Copyright (C) 1991, 1992, 1993, 1996, 1997, 1998, 1999 Free Software
+Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with this library; see the file COPYING.LIB.  If not, write to the Free
+Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA.  */
+
+#ifndef	_FNMATCH_H
+#define	_FNMATCH_H	1
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#if defined __cplusplus || (defined __STDC__ && __STDC__) || defined WINDOWS32
+# if !defined __GLIBC__
+#  undef	__P
+#  define __P(protos)	protos
+# endif
+#else /* Not C++ or ANSI C.  */
+# undef	__P
+# define __P(protos)	()
+/* We can get away without defining `const' here only because in this file
+   it is used only inside the prototype for `fnmatch', which is elided in
+   non-ANSI C where `const' is problematical.  */
+#endif /* C++ or ANSI C.  */
+
+#ifndef const
+# if (defined __STDC__ && __STDC__) || defined __cplusplus || defined WINDOWS32
+#  define __const	const
+# else
+#  define __const
+# endif
+#endif
+
+/* We #undef these before defining them because some losing systems
+   (HP-UX A.08.07 for example) define these in <unistd.h>.  */
+#undef	FNM_PATHNAME
+#undef	FNM_NOESCAPE
+#undef	FNM_PERIOD
+
+/* Bits set in the FLAGS argument to `fnmatch'.  */
+#define	FNM_PATHNAME	(1 << 0) /* No wildcard can ever match `/'.  */
+#define	FNM_NOESCAPE	(1 << 1) /* Backslashes don't quote special chars.  */
+#define	FNM_PERIOD	(1 << 2) /* Leading `.' is matched only explicitly.  */
+
+#if !defined _POSIX_C_SOURCE || _POSIX_C_SOURCE < 2 || defined _GNU_SOURCE
+# define FNM_FILE_NAME	 FNM_PATHNAME	/* Preferred GNU name.  */
+# define FNM_LEADING_DIR (1 << 3)	/* Ignore `/...' after a match.  */
+# define FNM_CASEFOLD	 (1 << 4)	/* Compare without regard to case.  */
+#endif
+
+/* Value returned by `fnmatch' if STRING does not match PATTERN.  */
+#define	FNM_NOMATCH	1
+
+/* This value is returned if the implementation does not support
+   `fnmatch'.  Since this is not the case here it will never be
+   returned but the conformance test suites still require the symbol
+   to be defined.  */
+#ifdef _XOPEN_SOURCE
+# define FNM_NOSYS	(-1)
+#endif
+
+/* Match NAME against the filename pattern PATTERN,
+   returning zero if it matches, FNM_NOMATCH if not.  */
+extern int fnmatch __P ((__const char *__pattern, __const char *__name,
+			 int __flags));
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* fnmatch.h */
diff --git a/src/kmk/glob/glob.c b/src/kmk/glob/glob.c
new file mode 100644
index 0000000..98827cd
--- /dev/null
+++ b/src/kmk/glob/glob.c
@@ -0,0 +1,1463 @@
+/* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999 Free
+Software Foundation, Inc.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with this library; see the file COPYING.LIB.  If not, write to the Free
+Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA.  */
+
+/* AIX requires this to be the first thing in the file.  */
+#if defined _AIX && !defined __GNUC__
+ #pragma alloca
+#endif
+
+#ifdef	HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Enable GNU extensions in glob.h.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE	1
+#endif
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+/* Outcomment the following line for production quality code.  */
+/* #define NDEBUG 1 */
+#include <assert.h>
+
+#include <stdio.h>		/* Needed on stupid SunOS for assert.  */
+
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#define GLOB_INTERFACE_VERSION 1
+#if 0 /* bird: Apparently this causes trouble for some debian builds. */
+#if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
+# include <gnu-versions.h>
+# if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
+#  define ELIDE_CODE
+# endif
+#endif
+#endif
+
+#ifndef ELIDE_CODE
+
+#if defined STDC_HEADERS || defined __GNU_LIBRARY__
+# include <stddef.h>
+#endif
+
+#if defined HAVE_UNISTD_H || defined _LIBC
+# include <unistd.h>
+# ifndef POSIX
+#  ifdef _POSIX_VERSION
+#   define POSIX
+#  endif
+# endif
+#endif
+
+#if !defined _AMIGA && !defined VMS && !defined WINDOWS32
+# include <pwd.h>
+#endif
+
+#if !defined __GNU_LIBRARY__ && !defined STDC_HEADERS
+extern int errno;
+#endif
+#ifndef __set_errno
+# define __set_errno(val) errno = (val)
+#endif
+
+#ifndef	NULL
+# define NULL	0
+#endif
+
+
+#if defined HAVE_DIRENT_H || defined __GNU_LIBRARY__
+# include <dirent.h>
+# define NAMLEN(dirent) strlen((dirent)->d_name)
+#else
+# define dirent direct
+# define NAMLEN(dirent) (dirent)->d_namlen
+# ifdef HAVE_SYS_NDIR_H
+#  include <sys/ndir.h>
+# endif
+# ifdef HAVE_SYS_DIR_H
+#  include <sys/dir.h>
+# endif
+# ifdef HAVE_NDIR_H
+#  include <ndir.h>
+# endif
+# ifdef HAVE_VMSDIR_H
+#  include "vmsdir.h"
+# endif /* HAVE_VMSDIR_H */
+#endif
+
+
+/* In GNU systems, <dirent.h> defines this macro for us.  */
+#ifdef _D_NAMLEN
+# undef NAMLEN
+# define NAMLEN(d) _D_NAMLEN(d)
+#endif
+
+/* When used in the GNU libc the symbol _DIRENT_HAVE_D_TYPE is available
+   if the `d_type' member for `struct dirent' is available.  */
+#ifdef _DIRENT_HAVE_D_TYPE
+# define HAVE_D_TYPE	1
+#endif
+
+
+#if (defined POSIX || defined WINDOWS32) && !defined __GNU_LIBRARY__
+/* Posix does not require that the d_ino field be present, and some
+   systems do not provide it. */
+# define REAL_DIR_ENTRY(dp) 1
+#else
+# define REAL_DIR_ENTRY(dp) (dp->d_ino != 0)
+#endif /* POSIX */
+
+#if defined STDC_HEADERS || defined __GNU_LIBRARY__
+# include <stdlib.h>
+# include <string.h>
+# define	ANSI_STRING
+#else	/* No standard headers.  */
+
+extern char *getenv ();
+
+# ifdef HAVE_STRING_H
+#  include <string.h>
+#  define ANSI_STRING
+# else
+#  include <strings.h>
+# endif
+# ifdef	HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+
+extern char *malloc (), *realloc ();
+extern void free ();
+
+extern void qsort ();
+extern void abort (), exit ();
+
+#endif	/* Standard headers.  */
+
+#ifndef	ANSI_STRING
+
+# ifndef bzero
+extern void bzero ();
+# endif
+# ifndef bcopy
+extern void bcopy ();
+# endif
+
+# define memcpy(d, s, n)	bcopy ((s), (d), (n))
+# define strrchr	rindex
+/* memset is only used for zero here, but let's be paranoid.  */
+# define memset(s, better_be_zero, n) \
+  ((void) ((better_be_zero) == 0 ? (bzero((s), (n)), 0) : (abort(), 0)))
+#endif	/* Not ANSI_STRING.  */
+
+#if !defined HAVE_STRCOLL && !defined _LIBC
+# define strcoll	strcmp
+#endif
+
+#if !defined HAVE_MEMPCPY && __GLIBC__ - 0 == 2 && __GLIBC_MINOR__ >= 1
+# define HAVE_MEMPCPY	1
+#if 0 /* bird: This messes with the electric.c heap (linux/amd64). Probably missing prototype, so int return. */
+# undef  mempcpy
+# define mempcpy(Dest, Src, Len) __mempcpy (Dest, Src, Len)
+#endif
+#endif
+
+#if !defined __GNU_LIBRARY__ && !defined __DJGPP__ && !defined ELECTRIC_HEAP && !defined __APPLE__ /* bird (last two) */
+# ifdef	__GNUC__
+__inline
+# endif
+# ifndef __SASC
+#  ifdef WINDOWS32
+#   include <malloc.h>
+static void *
+my_realloc (void *p, unsigned int n)
+#  else
+static char *
+my_realloc (p, n)
+     char *p;
+     unsigned int n;
+#  endif
+{
+  /* These casts are the for sake of the broken Ultrix compiler,
+     which warns of illegal pointer combinations otherwise.  */
+  if (p == NULL)
+    return (char *) malloc (n);
+  return (char *) realloc (p, n);
+}
+# define	realloc	my_realloc
+# endif /* __SASC */
+#endif /* __GNU_LIBRARY__ || __DJGPP__ */
+
+
+#if !defined __alloca /*&& !defined __GNU_LIBRARY__ - bird: unresolved __alloca symbol if skipping this for gnu libc. duh. */
+
+# ifdef	__GNUC__
+#  undef alloca
+#  define alloca(n)	__builtin_alloca (n)
+# else	/* Not GCC.  */
+#  ifdef HAVE_ALLOCA_H
+#   include <alloca.h>
+#  else	/* Not HAVE_ALLOCA_H.  */
+#   ifndef _AIX
+#    ifdef WINDOWS32
+#     include <malloc.h>
+#    else
+extern char *alloca ();
+#    endif /* WINDOWS32 */
+#   endif /* Not _AIX.  */
+#  endif /* sparc or HAVE_ALLOCA_H.  */
+# endif	/* Not GCC.  */
+
+# define __alloca	alloca
+
+#endif
+
+#if 1 /*bird: sigh. ndef __GNU_LIBRARY__*/
+# define __stat stat
+# ifdef STAT_MACROS_BROKEN
+#  undef S_ISDIR
+# endif
+# ifndef S_ISDIR
+#  define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
+# endif
+#endif
+
+#ifdef _LIBC
+# ifdef KMK
+#  error "_LIBC better not be defined!"
+# endif
+# undef strdup
+# define strdup(str) __strdup (str)
+# define sysconf(id) __sysconf (id)
+# define closedir(dir) __closedir (dir)
+# define opendir(name) __opendir (name)
+# define readdir(str) __readdir (str)
+# define getpwnam_r(name, bufp, buf, len, res) \
+   __getpwnam_r (name, bufp, buf, len, res)
+# ifndef __stat
+#  define __stat(fname, buf) __xstat (_STAT_VER, fname, buf)
+# endif
+#endif
+
+#if !(defined STDC_HEADERS || defined __GNU_LIBRARY__)
+# undef	size_t
+# define size_t	unsigned int
+#endif
+
+/* Some system header files erroneously define these.
+   We want our own definitions from <fnmatch.h> to take precedence.  */
+#ifndef __GNU_LIBRARY__
+# undef	FNM_PATHNAME
+# undef	FNM_NOESCAPE
+# undef	FNM_PERIOD
+#endif
+#include <fnmatch.h>
+
+/* Some system header files erroneously define these.
+   We want our own definitions from <glob.h> to take precedence.  */
+#ifndef __GNU_LIBRARY__
+# undef	GLOB_ERR
+# undef	GLOB_MARK
+# undef	GLOB_NOSORT
+# undef	GLOB_DOOFFS
+# undef	GLOB_NOCHECK
+# undef	GLOB_APPEND
+# undef	GLOB_NOESCAPE
+# undef	GLOB_PERIOD
+#endif
+#include <glob.h>
+
+#ifdef HAVE_GETLOGIN_R
+extern int getlogin_r __P ((char *, size_t));
+#else
+extern char *getlogin __P ((void));
+#endif
+
+static
+#if __GNUC__ - 0 >= 2
+inline
+#endif
+const char *next_brace_sub __P ((const char *begin));
+static int glob_in_dir __P ((const char *pattern, const char *directory,
+			     int flags,
+			     int (*errfunc) (const char *, int),
+			     glob_t *pglob));
+static int prefix_array __P ((const char *prefix, char **array, size_t n));
+static int collated_compare __P ((const __ptr_t, const __ptr_t));
+
+#if !defined _LIBC || !defined NO_GLOB_PATTERN_P
+int __glob_pattern_p __P ((const char *pattern, int quote));
+#endif
+
+/* Find the end of the sub-pattern in a brace expression.  We define
+   this as an inline function if the compiler permits.  */
+static
+#if __GNUC__ - 0 >= 2
+inline
+#endif
+const char *
+next_brace_sub (begin)
+     const char *begin;
+{
+  unsigned int depth = 0;
+  const char *cp = begin;
+
+  while (1)
+    {
+      if (depth == 0)
+	{
+	  if (*cp != ',' && *cp != '}' && *cp != '\0')
+	    {
+	      if (*cp == '{')
+		++depth;
+	      ++cp;
+	      continue;
+	    }
+	}
+      else
+	{
+	  while (*cp != '\0' && (*cp != '}' || depth > 0))
+	    {
+	      if (*cp == '}')
+		--depth;
+	      ++cp;
+	    }
+	  if (*cp == '\0')
+	    /* An incorrectly terminated brace expression.  */
+	    return NULL;
+
+	  continue;
+	}
+      break;
+    }
+
+  return cp;
+}
+
+/* Do glob searching for PATTERN, placing results in PGLOB.
+   The bits defined above may be set in FLAGS.
+   If a directory cannot be opened or read and ERRFUNC is not nil,
+   it is called with the pathname that caused the error, and the
+   `errno' value from the failing call; if it returns non-zero
+   `glob' returns GLOB_ABORTED; if it returns zero, the error is ignored.
+   If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
+   Otherwise, `glob' returns zero.  */
+int
+glob (pattern, flags, errfunc, pglob)
+     const char *pattern;
+     int flags;
+     int (*errfunc) __P ((const char *, int));
+     glob_t *pglob;
+{
+  const char *filename;
+  const char *dirname;
+  size_t dirlen;
+  int status;
+  __size_t oldcount; /* bird: correct type. */
+
+  if (pattern == NULL || pglob == NULL || (flags & ~__GLOB_FLAGS) != 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  /* POSIX requires all slashes to be matched.  This means that with
+     a trailing slash we must match only directories.  */
+  if (pattern[0] && pattern[strlen (pattern) - 1] == '/')
+    flags |= GLOB_ONLYDIR;
+
+  if (flags & GLOB_BRACE)
+    {
+      const char *begin = strchr (pattern, '{');
+      if (begin != NULL)
+	{
+	  /* Allocate working buffer large enough for our work.  Note that
+	    we have at least an opening and closing brace.  */
+	  size_t firstc;  /* bird: correct type. */
+	  char *alt_start;
+	  const char *p;
+	  const char *next;
+	  const char *rest;
+	  size_t rest_len;
+#ifdef __GNUC__
+	  char onealt[strlen (pattern) - 1];
+#else
+	  char *onealt = (char *) malloc (strlen (pattern) - 1);
+	  if (onealt == NULL)
+	    {
+	      if (!(flags & GLOB_APPEND))
+		globfree (pglob);
+	      return GLOB_NOSPACE;
+	    }
+#endif
+
+	  /* We know the prefix for all sub-patterns.  */
+#ifdef HAVE_MEMPCPY
+	  alt_start = mempcpy (onealt, pattern, begin - pattern);
+#else
+	  memcpy (onealt, pattern, begin - pattern);
+	  alt_start = &onealt[begin - pattern];
+#endif
+
+	  /* Find the first sub-pattern and at the same time find the
+	     rest after the closing brace.  */
+	  next = next_brace_sub (begin + 1);
+	  if (next == NULL)
+	    {
+	      /* It is an illegal expression.  */
+#ifndef __GNUC__
+	      free (onealt);
+#endif
+	      return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob);
+	    }
+
+	  /* Now find the end of the whole brace expression.  */
+	  rest = next;
+	  while (*rest != '}')
+	    {
+	      rest = next_brace_sub (rest + 1);
+	      if (rest == NULL)
+		{
+		  /* It is an illegal expression.  */
+#ifndef __GNUC__
+		  free (onealt);
+#endif
+		  return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob);
+		}
+	    }
+	  /* Please note that we now can be sure the brace expression
+	     is well-formed.  */
+	  rest_len = strlen (++rest) + 1;
+
+	  /* We have a brace expression.  BEGIN points to the opening {,
+	     NEXT points past the terminator of the first element, and END
+	     points past the final }.  We will accumulate result names from
+	     recursive runs for each brace alternative in the buffer using
+	     GLOB_APPEND.  */
+
+	  if (!(flags & GLOB_APPEND))
+	    {
+	      /* This call is to set a new vector, so clear out the
+		 vector so we can append to it.  */
+	      pglob->gl_pathc = 0;
+	      pglob->gl_pathv = NULL;
+	    }
+	  firstc = pglob->gl_pathc;
+
+	  p = begin + 1;
+	  while (1)
+	    {
+	      int result;
+
+	      /* Construct the new glob expression.  */
+#ifdef HAVE_MEMPCPY
+	      mempcpy (mempcpy (alt_start, p, next - p), rest, rest_len);
+#else
+	      memcpy (alt_start, p, next - p);
+	      memcpy (&alt_start[next - p], rest, rest_len);
+#endif
+
+	      result = glob (onealt,
+			     ((flags & ~(GLOB_NOCHECK|GLOB_NOMAGIC))
+			      | GLOB_APPEND), errfunc, pglob);
+
+	      /* If we got an error, return it.  */
+	      if (result && result != GLOB_NOMATCH)
+		{
+#ifndef __GNUC__
+		  free (onealt);
+#endif
+		  if (!(flags & GLOB_APPEND))
+		    globfree (pglob);
+		  return result;
+		}
+
+	      if (*next == '}')
+		/* We saw the last entry.  */
+		break;
+
+	      p = next + 1;
+	      next = next_brace_sub (p);
+	      assert (next != NULL);
+	    }
+
+#ifndef __GNUC__
+	  free (onealt);
+#endif
+
+	  if (pglob->gl_pathc != firstc)
+	    /* We found some entries.  */
+	    return 0;
+	  else if (!(flags & (GLOB_NOCHECK|GLOB_NOMAGIC)))
+	    return GLOB_NOMATCH;
+	}
+    }
+
+  /* Find the filename.  */
+  filename = strrchr (pattern, '/');
+#if defined __MSDOS__ || defined WINDOWS32
+  /* The case of "d:pattern".  Since `:' is not allowed in
+     file names, we can safely assume that wherever it
+     happens in pattern, it signals the filename part.  This
+     is so we could some day support patterns like "[a-z]:foo".  */
+  if (filename == NULL)
+    filename = strchr (pattern, ':');
+#endif /* __MSDOS__ || WINDOWS32 */
+  if (filename == NULL)
+    {
+      /* This can mean two things: a simple name or "~name".  The later
+	 case is nothing but a notation for a directory.  */
+      if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && pattern[0] == '~')
+	{
+	  dirname = pattern;
+	  dirlen = strlen (pattern);
+
+	  /* Set FILENAME to NULL as a special flag.  This is ugly but
+	     other solutions would require much more code.  We test for
+	     this special case below.  */
+	  filename = NULL;
+	}
+      else
+	{
+	  filename = pattern;
+#ifdef _AMIGA
+	  dirname = "";
+#else
+	  dirname = ".";
+#endif
+	  dirlen = 0;
+	}
+    }
+  else if (filename == pattern)
+    {
+      /* "/pattern".  */
+      dirname = "/";
+      dirlen = 1;
+      ++filename;
+    }
+  else
+    {
+      char *newp;
+      dirlen = filename - pattern;
+#if defined __MSDOS__ || defined WINDOWS32
+      if (*filename == ':'
+	  || (filename > pattern + 1 && filename[-1] == ':'))
+	{
+	  char *drive_spec;
+
+	  ++dirlen;
+	  drive_spec = (char *) __alloca (dirlen + 1);
+#ifdef HAVE_MEMPCPY
+	  *((char *) mempcpy (drive_spec, pattern, dirlen)) = '\0';
+#else
+	  memcpy (drive_spec, pattern, dirlen);
+	  drive_spec[dirlen] = '\0';
+#endif
+	  /* For now, disallow wildcards in the drive spec, to
+	     prevent infinite recursion in glob.  */
+	  if (__glob_pattern_p (drive_spec, !(flags & GLOB_NOESCAPE)))
+	    return GLOB_NOMATCH;
+	  /* If this is "d:pattern", we need to copy `:' to DIRNAME
+	     as well.  If it's "d:/pattern", don't remove the slash
+	     from "d:/", since "d:" and "d:/" are not the same.*/
+	}
+#endif
+      newp = (char *) __alloca (dirlen + 1);
+#ifdef HAVE_MEMPCPY
+      *((char *) mempcpy (newp, pattern, dirlen)) = '\0';
+#else
+      memcpy (newp, pattern, dirlen);
+      newp[dirlen] = '\0';
+#endif
+      dirname = newp;
+      ++filename;
+
+      if (filename[0] == '\0'
+#if defined __MSDOS__ || defined WINDOWS32
+          && dirname[dirlen - 1] != ':'
+	  && (dirlen < 3 || dirname[dirlen - 2] != ':'
+	      || dirname[dirlen - 1] != '/')
+#endif
+	  && dirlen > 1)
+	/* "pattern/".  Expand "pattern", appending slashes.  */
+	{
+	  int val = glob (dirname, flags | GLOB_MARK, errfunc, pglob);
+	  if (val == 0)
+	    pglob->gl_flags = ((pglob->gl_flags & ~GLOB_MARK)
+			       | (flags & GLOB_MARK));
+	  return val;
+	}
+    }
+
+  if (!(flags & GLOB_APPEND))
+    {
+      pglob->gl_pathc = 0;
+      pglob->gl_pathv = NULL;
+    }
+
+  oldcount = pglob->gl_pathc;
+
+#ifndef VMS
+  if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && dirname[0] == '~')
+    {
+      if (dirname[1] == '\0' || dirname[1] == '/')
+	{
+	  /* Look up home directory.  */
+#ifdef VMS
+/* This isn't obvious, RTLs of DECC and VAXC know about "HOME" */
+          const char *home_dir = getenv ("SYS$LOGIN");
+#else
+          const char *home_dir = getenv ("HOME");
+#endif
+# ifdef _AMIGA
+	  if (home_dir == NULL || home_dir[0] == '\0')
+	    home_dir = "SYS:";
+# else
+#  ifdef WINDOWS32
+	  if (home_dir == NULL || home_dir[0] == '\0')
+            home_dir = "c:/users/default"; /* poor default */
+#  else
+#   ifdef VMS
+/* Again, this isn't obvious, if "HOME" isn't known "SYS$LOGIN" should be set */
+	  if (home_dir == NULL || home_dir[0] == '\0')
+	    home_dir = "SYS$DISK:[]";
+#   else
+	  if (home_dir == NULL || home_dir[0] == '\0')
+	    {
+	      int success;
+	      char *name;
+#   if defined HAVE_GETLOGIN_R || defined _LIBC
+	      size_t buflen = sysconf (_SC_LOGIN_NAME_MAX) + 1;
+
+	      if (buflen == 0)
+		/* `sysconf' does not support _SC_LOGIN_NAME_MAX.  Try
+		   a moderate value.  */
+		buflen = 20;
+	      name = (char *) __alloca (buflen);
+
+	      success = getlogin_r (name, buflen) >= 0;
+#   else
+	      success = (name = getlogin ()) != NULL;
+#   endif
+	      if (success)
+		{
+		  struct passwd *p;
+#   if defined HAVE_GETPWNAM_R || defined _LIBC
+		  size_t pwbuflen = sysconf (_SC_GETPW_R_SIZE_MAX);
+		  char *pwtmpbuf;
+		  struct passwd pwbuf;
+		  int save = errno;
+
+		  if (pwbuflen == -1)
+		    /* `sysconf' does not support _SC_GETPW_R_SIZE_MAX.
+		       Try a moderate value.  */
+		    pwbuflen = 1024;
+		  pwtmpbuf = (char *) __alloca (pwbuflen);
+
+		  while (getpwnam_r (name, &pwbuf, pwtmpbuf, pwbuflen, &p)
+			 != 0)
+		    {
+		      if (errno != ERANGE)
+			{
+			  p = NULL;
+			  break;
+			}
+		      pwbuflen *= 2;
+		      pwtmpbuf = (char *) __alloca (pwbuflen);
+		      __set_errno (save);
+		    }
+#   else
+		  p = getpwnam (name);
+#   endif
+		  if (p != NULL)
+		    home_dir = p->pw_dir;
+		}
+	    }
+	  if (home_dir == NULL || home_dir[0] == '\0')
+	    {
+	      if (flags & GLOB_TILDE_CHECK)
+		return GLOB_NOMATCH;
+	      else
+		home_dir = "~"; /* No luck.  */
+	    }
+#   endif /* VMS */
+#  endif /* WINDOWS32 */
+# endif
+	  /* Now construct the full directory.  */
+	  if (dirname[1] == '\0')
+	    dirname = home_dir;
+	  else
+	    {
+	      char *newp;
+	      size_t home_len = strlen (home_dir);
+	      newp = (char *) __alloca (home_len + dirlen);
+# ifdef HAVE_MEMPCPY
+	      mempcpy (mempcpy (newp, home_dir, home_len),
+		       &dirname[1], dirlen);
+# else
+	      memcpy (newp, home_dir, home_len);
+	      memcpy (&newp[home_len], &dirname[1], dirlen);
+# endif
+	      dirname = newp;
+	    }
+	}
+# if !defined _AMIGA && !defined WINDOWS32 && !defined VMS
+      else
+	{
+	  char *end_name = strchr (dirname, '/');
+	  const char *user_name;
+	  const char *home_dir;
+
+	  if (end_name == NULL)
+	    user_name = dirname + 1;
+	  else
+	    {
+	      char *newp;
+	      newp = (char *) __alloca (end_name - dirname);
+# ifdef HAVE_MEMPCPY
+	      *((char *) mempcpy (newp, dirname + 1, end_name - dirname))
+		= '\0';
+# else
+	      memcpy (newp, dirname + 1, end_name - dirname);
+	      newp[end_name - dirname - 1] = '\0';
+# endif
+	      user_name = newp;
+	    }
+
+	  /* Look up specific user's home directory.  */
+	  {
+	    struct passwd *p;
+#  if defined HAVE_GETPWNAM_R || defined _LIBC
+	    size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
+	    char *pwtmpbuf;
+	    struct passwd pwbuf;
+	    int save = errno;
+
+	    if (buflen == -1)
+	      /* `sysconf' does not support _SC_GETPW_R_SIZE_MAX.  Try a
+		 moderate value.  */
+	      buflen = 1024;
+	    pwtmpbuf = (char *) __alloca (buflen);
+
+	    while (getpwnam_r (user_name, &pwbuf, pwtmpbuf, buflen, &p) != 0)
+	      {
+		if (errno != ERANGE)
+		  {
+		    p = NULL;
+		    break;
+		  }
+		buflen *= 2;
+		pwtmpbuf = __alloca (buflen);
+		__set_errno (save);
+	      }
+#  else
+	    p = getpwnam (user_name);
+#  endif
+	    if (p != NULL)
+	      home_dir = p->pw_dir;
+	    else
+	      home_dir = NULL;
+	  }
+	  /* If we found a home directory use this.  */
+	  if (home_dir != NULL)
+	    {
+	      char *newp;
+	      size_t home_len = strlen (home_dir);
+	      size_t rest_len = end_name == NULL ? 0 : strlen (end_name);
+	      newp = (char *) __alloca (home_len + rest_len + 1);
+#  ifdef HAVE_MEMPCPY
+	      *((char *) mempcpy (mempcpy (newp, home_dir, home_len),
+				  end_name, rest_len)) = '\0';
+#  else
+	      memcpy (newp, home_dir, home_len);
+	      memcpy (&newp[home_len], end_name, rest_len);
+	      newp[home_len + rest_len] = '\0';
+#  endif
+	      dirname = newp;
+	    }
+	  else
+	    if (flags & GLOB_TILDE_CHECK)
+	      /* We have to regard it as an error if we cannot find the
+		 home directory.  */
+	      return GLOB_NOMATCH;
+	}
+# endif	/* Not Amiga && not WINDOWS32 && not VMS.  */
+    }
+#endif	/* Not VMS.  */
+
+  /* Now test whether we looked for "~" or "~NAME".  In this case we
+     can give the answer now.  */
+  if (filename == NULL)
+    {
+      struct stat st;
+
+      /* Return the directory if we don't check for error or if it exists.  */
+      if ((flags & GLOB_NOCHECK)
+#ifdef KMK
+	  || (flags & GLOB_ALTDIRFUNC
+	      ? (*pglob->gl_isdir) (dirname)
+	      : __stat (dirname, &st) == 0 && S_ISDIR (st.st_mode))
+#else
+	  || (((flags & GLOB_ALTDIRFUNC)
+	       ? (*pglob->gl_stat) (dirname, &st)
+	       : __stat (dirname, &st)) == 0
+	      && S_ISDIR (st.st_mode))
+#endif
+	  )
+	{
+	  pglob->gl_pathv
+	    = (char **) realloc (pglob->gl_pathv,
+				 (pglob->gl_pathc +
+				  ((flags & GLOB_DOOFFS) ?
+				   pglob->gl_offs : 0) +
+				  1 + 1) *
+				 sizeof (char *));
+	  if (pglob->gl_pathv == NULL)
+	    return GLOB_NOSPACE;
+
+	  if (flags & GLOB_DOOFFS)
+	    while (pglob->gl_pathc < pglob->gl_offs)
+	      pglob->gl_pathv[pglob->gl_pathc++] = NULL;
+
+#if defined HAVE_STRDUP || defined _LIBC
+	  pglob->gl_pathv[pglob->gl_pathc] = strdup (dirname);
+#else
+	  {
+	    size_t len = strlen (dirname) + 1;
+	    char *dircopy = malloc (len);
+	    if (dircopy != NULL)
+	      pglob->gl_pathv[pglob->gl_pathc] = memcpy (dircopy, dirname,
+							 len);
+	  }
+#endif
+	  if (pglob->gl_pathv[pglob->gl_pathc] == NULL)
+	    {
+	      free (pglob->gl_pathv);
+	      return GLOB_NOSPACE;
+	    }
+	  pglob->gl_pathv[++pglob->gl_pathc] = NULL;
+	  pglob->gl_flags = flags;
+
+	  return 0;
+	}
+
+      /* Not found.  */
+      return GLOB_NOMATCH;
+    }
+
+  if (__glob_pattern_p (dirname, !(flags & GLOB_NOESCAPE)))
+    {
+      /* The directory name contains metacharacters, so we
+	 have to glob for the directory, and then glob for
+	 the pattern in each directory found.  */
+      glob_t dirs;
+      register __size_t i; /* bird: correct type. */
+
+      status = glob (dirname,
+		     ((flags & (GLOB_ERR | GLOB_NOCHECK | GLOB_NOESCAPE))
+		      | GLOB_NOSORT | GLOB_ONLYDIR),
+		     errfunc, &dirs);
+      if (status != 0)
+	return status;
+
+      /* We have successfully globbed the preceding directory name.
+	 For each name we found, call glob_in_dir on it and FILENAME,
+	 appending the results to PGLOB.  */
+      for (i = 0; i < dirs.gl_pathc; ++i)
+	{
+	  int old_pathc;
+
+#ifdef	SHELL
+	  {
+	    /* Make globbing interruptible in the bash shell. */
+	    extern int interrupt_state;
+
+	    if (interrupt_state)
+	      {
+		globfree (&dirs);
+		globfree (&files);
+		return GLOB_ABORTED;
+	      }
+	  }
+#endif /* SHELL.  */
+
+	  old_pathc = pglob->gl_pathc;
+	  status = glob_in_dir (filename, dirs.gl_pathv[i],
+				((flags | GLOB_APPEND)
+				 & ~(GLOB_NOCHECK | GLOB_ERR)),
+				errfunc, pglob);
+	  if (status == GLOB_NOMATCH)
+	    /* No matches in this directory.  Try the next.  */
+	    continue;
+
+	  if (status != 0)
+	    {
+	      globfree (&dirs);
+	      globfree (pglob);
+	      return status;
+	    }
+
+	  /* Stick the directory on the front of each name.  */
+	  if (prefix_array (dirs.gl_pathv[i],
+			    &pglob->gl_pathv[old_pathc],
+			    pglob->gl_pathc - old_pathc))
+	    {
+	      globfree (&dirs);
+	      globfree (pglob);
+	      return GLOB_NOSPACE;
+	    }
+	}
+
+      flags |= GLOB_MAGCHAR;
+
+      /* We have ignored the GLOB_NOCHECK flag in the `glob_in_dir' calls.
+	 But if we have not found any matching entry and thie GLOB_NOCHECK
+	 flag was set we must return the list consisting of the disrectory
+	 names followed by the filename.  */
+      if (pglob->gl_pathc == oldcount)
+	{
+	  /* No matches.  */
+	  if (flags & GLOB_NOCHECK)
+	    {
+	      size_t filename_len = strlen (filename) + 1;
+	      char **new_pathv;
+	      struct stat st;
+
+	      /* This is an pessimistic guess about the size.  */
+	      pglob->gl_pathv
+		= (char **) realloc (pglob->gl_pathv,
+				     (pglob->gl_pathc +
+				      ((flags & GLOB_DOOFFS) ?
+				       pglob->gl_offs : 0) +
+				      dirs.gl_pathc + 1) *
+				     sizeof (char *));
+	      if (pglob->gl_pathv == NULL)
+		{
+		  globfree (&dirs);
+		  return GLOB_NOSPACE;
+		}
+
+	      if (flags & GLOB_DOOFFS)
+		while (pglob->gl_pathc < pglob->gl_offs)
+		  pglob->gl_pathv[pglob->gl_pathc++] = NULL;
+
+	      for (i = 0; i < dirs.gl_pathc; ++i)
+		{
+		  const char *dir = dirs.gl_pathv[i];
+		  size_t dir_len = strlen (dir);
+
+		  /* First check whether this really is a directory.  */
+#ifdef KMK
+		  if (flags & GLOB_ALTDIRFUNC
+		      ? !pglob->gl_isdir (dir)
+		      : __stat (dir, &st) != 0 || !S_ISDIR (st.st_mode))
+#else
+		  if (((flags & GLOB_ALTDIRFUNC)
+		       ? (*pglob->gl_stat) (dir, &st) : __stat (dir, &st)) != 0
+		      || !S_ISDIR (st.st_mode))
+#endif
+		    /* No directory, ignore this entry.  */
+		    continue;
+
+		  pglob->gl_pathv[pglob->gl_pathc] = malloc (dir_len + 1
+							     + filename_len);
+		  if (pglob->gl_pathv[pglob->gl_pathc] == NULL)
+		    {
+		      globfree (&dirs);
+		      globfree (pglob);
+		      return GLOB_NOSPACE;
+		    }
+
+#ifdef HAVE_MEMPCPY
+		  mempcpy (mempcpy (mempcpy (pglob->gl_pathv[pglob->gl_pathc],
+					     dir, dir_len),
+				    "/", 1),
+			   filename, filename_len);
+#else
+		  memcpy (pglob->gl_pathv[pglob->gl_pathc], dir, dir_len);
+		  pglob->gl_pathv[pglob->gl_pathc][dir_len] = '/';
+		  memcpy (&pglob->gl_pathv[pglob->gl_pathc][dir_len + 1],
+			  filename, filename_len);
+#endif
+		  ++pglob->gl_pathc;
+		}
+
+	      pglob->gl_pathv[pglob->gl_pathc] = NULL;
+	      pglob->gl_flags = flags;
+
+	      /* Now we know how large the gl_pathv vector must be.  */
+	      new_pathv = (char **) realloc (pglob->gl_pathv,
+					     ((pglob->gl_pathc + 1)
+					      * sizeof (char *)));
+	      if (new_pathv != NULL)
+		pglob->gl_pathv = new_pathv;
+	    }
+	  else
+	    return GLOB_NOMATCH;
+	}
+
+      globfree (&dirs);
+    }
+  else
+    {
+      status = glob_in_dir (filename, dirname, flags, errfunc, pglob);
+      if (status != 0)
+	return status;
+
+      if (dirlen > 0)
+	{
+	  /* Stick the directory on the front of each name.  */
+	  __size_t ignore = oldcount; /* bird: correct type. */
+
+	  if ((flags & GLOB_DOOFFS) && ignore < pglob->gl_offs)
+	    ignore = pglob->gl_offs;
+
+	  if (prefix_array (dirname,
+			    &pglob->gl_pathv[ignore],
+			    pglob->gl_pathc - ignore))
+	    {
+	      globfree (pglob);
+	      return GLOB_NOSPACE;
+	    }
+	}
+    }
+
+  if (flags & GLOB_MARK)
+    {
+      /* Append slashes to directory names.  */
+      __size_t i; /* bird: correct type. */
+      struct stat st;
+      for (i = oldcount; i < pglob->gl_pathc; ++i)
+#ifdef KMK
+	if (flags & GLOB_ALTDIRFUNC
+	    ? pglob->gl_isdir (pglob->gl_pathv[i])
+	    : __stat (pglob->gl_pathv[i], &st) == 0 && S_ISDIR (st.st_mode) )
+#else
+	if (((flags & GLOB_ALTDIRFUNC)
+	     ? (*pglob->gl_stat) (pglob->gl_pathv[i], &st)
+	     : __stat (pglob->gl_pathv[i], &st)) == 0
+	    && S_ISDIR (st.st_mode))
+#endif
+	  {
+ 	    size_t len = strlen (pglob->gl_pathv[i]) + 2;
+	    char *new = realloc (pglob->gl_pathv[i], len);
+ 	    if (new == NULL)
+	      {
+		globfree (pglob);
+		return GLOB_NOSPACE;
+	      }
+	    strcpy (&new[len - 2], "/");
+	    pglob->gl_pathv[i] = new;
+	  }
+    }
+
+  if (!(flags & GLOB_NOSORT))
+    {
+      /* Sort the vector.  */
+      int non_sort = oldcount;
+
+      if ((flags & GLOB_DOOFFS) && pglob->gl_offs > oldcount)
+	non_sort = pglob->gl_offs;
+
+      qsort ((__ptr_t) &pglob->gl_pathv[non_sort],
+	     pglob->gl_pathc - non_sort,
+	     sizeof (char *), collated_compare);
+    }
+
+  return 0;
+}
+
+
+/* Free storage allocated in PGLOB by a previous `glob' call.  */
+void
+globfree (pglob)
+     register glob_t *pglob;
+{
+  if (pglob->gl_pathv != NULL)
+    {
+      register __size_t i; /* bird: correct type */
+      for (i = 0; i < pglob->gl_pathc; ++i)
+	if (pglob->gl_pathv[i] != NULL)
+	  free ((__ptr_t) pglob->gl_pathv[i]);
+      free ((__ptr_t) pglob->gl_pathv);
+    }
+}
+
+
+/* Do a collated comparison of A and B.  */
+static int
+collated_compare (a, b)
+     const __ptr_t a;
+     const __ptr_t b;
+{
+  const char *const s1 = *(const char *const * const) a;
+  const char *const s2 = *(const char *const * const) b;
+
+  if (s1 == s2)
+    return 0;
+  if (s1 == NULL)
+    return 1;
+  if (s2 == NULL)
+    return -1;
+  return strcoll (s1, s2);
+}
+
+
+/* Prepend DIRNAME to each of N members of ARRAY, replacing ARRAY's
+   elements in place.  Return nonzero if out of memory, zero if successful.
+   A slash is inserted between DIRNAME and each elt of ARRAY,
+   unless DIRNAME is just "/".  Each old element of ARRAY is freed.  */
+static int
+prefix_array (dirname, array, n)
+     const char *dirname;
+     char **array;
+     size_t n;
+{
+  register size_t i;
+  size_t dirlen = strlen (dirname);
+#if defined __MSDOS__ || defined WINDOWS32
+  int sep_char = '/';
+# define DIRSEP_CHAR sep_char
+#else
+# define DIRSEP_CHAR '/'
+#endif
+
+  if (dirlen == 1 && dirname[0] == '/')
+    /* DIRNAME is just "/", so normal prepending would get us "//foo".
+       We want "/foo" instead, so don't prepend any chars from DIRNAME.  */
+    dirlen = 0;
+#if defined __MSDOS__ || defined WINDOWS32
+  else if (dirlen > 1)
+    {
+      if (dirname[dirlen - 1] == '/' && dirname[dirlen - 2] == ':')
+	/* DIRNAME is "d:/".  Don't prepend the slash from DIRNAME.  */
+	--dirlen;
+      else if (dirname[dirlen - 1] == ':')
+	{
+	  /* DIRNAME is "d:".  Use `:' instead of `/'.  */
+	  --dirlen;
+	  sep_char = ':';
+	}
+    }
+#endif
+
+  for (i = 0; i < n; ++i)
+    {
+      size_t eltlen = strlen (array[i]) + 1;
+      char *new = (char *) malloc (dirlen + 1 + eltlen);
+      if (new == NULL)
+	{
+	  while (i > 0)
+	    free ((__ptr_t) array[--i]);
+	  return 1;
+	}
+
+#ifdef HAVE_MEMPCPY
+      {
+	char *endp = (char *) mempcpy (new, dirname, dirlen);
+	*endp++ = DIRSEP_CHAR;
+	mempcpy (endp, array[i], eltlen);
+      }
+#else
+      memcpy (new, dirname, dirlen);
+      new[dirlen] = DIRSEP_CHAR;
+      memcpy (&new[dirlen + 1], array[i], eltlen);
+#endif
+      free ((__ptr_t) array[i]);
+      array[i] = new;
+    }
+
+  return 0;
+}
+
+
+/* We must not compile this function twice.  */
+#if !defined _LIBC || !defined NO_GLOB_PATTERN_P
+/* Return nonzero if PATTERN contains any metacharacters.
+   Metacharacters can be quoted with backslashes if QUOTE is nonzero.  */
+int
+__glob_pattern_p (pattern, quote)
+     const char *pattern;
+     int quote;
+{
+  register const char *p;
+  int open = 0;
+
+  for (p = pattern; *p != '\0'; ++p)
+    switch (*p)
+      {
+      case '?':
+      case '*':
+	return 1;
+
+      case '\\':
+	if (quote && p[1] != '\0')
+	  ++p;
+	break;
+
+      case '[':
+	open = 1;
+	break;
+
+      case ']':
+	if (open)
+	  return 1;
+	break;
+      }
+
+  return 0;
+}
+# ifdef _LIBC
+weak_alias (__glob_pattern_p, glob_pattern_p)
+# endif
+#endif
+
+
+/* Like `glob', but PATTERN is a final pathname component,
+   and matches are searched for in DIRECTORY.
+   The GLOB_NOSORT bit in FLAGS is ignored.  No sorting is ever done.
+   The GLOB_APPEND flag is assumed to be set (always appends).  */
+static int
+glob_in_dir (pattern, directory, flags, errfunc, pglob)
+     const char *pattern;
+     const char *directory;
+     int flags;
+     int (*errfunc) __P ((const char *, int));
+     glob_t *pglob;
+{
+  __ptr_t stream = NULL;
+
+  struct globlink
+    {
+      struct globlink *next;
+      char *name;
+    };
+  struct globlink *names = NULL;
+  size_t nfound;
+  int meta;
+  int save;
+
+#ifdef VMS
+  if (*directory == 0)
+    directory = "[]";
+#endif
+  meta = __glob_pattern_p (pattern, !(flags & GLOB_NOESCAPE));
+  if (meta == 0)
+    {
+      if (flags & (GLOB_NOCHECK|GLOB_NOMAGIC))
+	/* We need not do any tests.  The PATTERN contains no meta
+	   characters and we must not return an error therefore the
+	   result will always contain exactly one name.  */
+	flags |= GLOB_NOCHECK;
+      else
+	{
+	  /* Since we use the normal file functions we can also use stat()
+	     to verify the file is there.  */
+	  struct stat st;
+	  size_t patlen = strlen (pattern);
+	  size_t dirlen = strlen (directory);
+	  char *fullname = (char *) __alloca (dirlen + 1 + patlen + 1);
+
+# ifdef HAVE_MEMPCPY
+	  mempcpy (mempcpy (mempcpy (fullname, directory, dirlen),
+			    "/", 1),
+		   pattern, patlen + 1);
+# else
+	  memcpy (fullname, directory, dirlen);
+	  fullname[dirlen] = '/';
+	  memcpy (&fullname[dirlen + 1], pattern, patlen + 1);
+# endif
+# ifdef KMK
+	  if (flags & GLOB_ALTDIRFUNC ? pglob->gl_exists (fullname) : __stat (fullname, &st) == 0)
+# else
+	  if (((flags & GLOB_ALTDIRFUNC)
+	       ? (*pglob->gl_stat) (fullname, &st)
+	       : __stat (fullname, &st)) == 0)
+# endif
+	    /* We found this file to be existing.  Now tell the rest
+	       of the function to copy this name into the result.  */
+	    flags |= GLOB_NOCHECK;
+	}
+
+      nfound = 0;
+    }
+  else
+    {
+      if (pattern[0] == '\0')
+	{
+	  /* This is a special case for matching directories like in
+	     "*a/".  */
+	  names = (struct globlink *) __alloca (sizeof (struct globlink));
+	  names->name = (char *) malloc (1);
+	  if (names->name == NULL)
+	    goto memory_error;
+	  names->name[0] = '\0';
+	  names->next = NULL;
+	  nfound = 1;
+	  meta = 0;
+	}
+      else
+	{
+	  stream = ((flags & GLOB_ALTDIRFUNC)
+		    ? (*pglob->gl_opendir) (directory)
+		    : (__ptr_t) opendir (directory));
+	  if (stream == NULL)
+	    {
+	      if (errno != ENOTDIR
+		  && ((errfunc != NULL && (*errfunc) (directory, errno))
+		      || (flags & GLOB_ERR)))
+		return GLOB_ABORTED;
+	      nfound = 0;
+	      meta = 0;
+	    }
+	  else
+	    {
+	      int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0)
+			       | ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0)
+#if defined HAVE_CASE_INSENSITIVE_FS
+				   | FNM_CASEFOLD
+#endif
+				   );
+	      nfound = 0;
+	      flags |= GLOB_MAGCHAR;
+
+	      while (1)
+		{
+		  const char *name;
+		  size_t len;
+		  struct dirent *d = ((flags & GLOB_ALTDIRFUNC)
+				      ? (*pglob->gl_readdir) (stream)
+				      : readdir ((DIR *) stream));
+		  if (d == NULL)
+		    break;
+		  if (! REAL_DIR_ENTRY (d))
+		    continue;
+
+#ifdef HAVE_D_TYPE
+		  /* If we shall match only directories use the information
+		     provided by the dirent call if possible.  */
+		  if ((flags & GLOB_ONLYDIR)
+		      && d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
+		    continue;
+#endif
+
+		  name = d->d_name;
+
+		  if (fnmatch (pattern, name, fnm_flags) == 0)
+		    {
+		      struct globlink *new = (struct globlink *)
+			__alloca (sizeof (struct globlink));
+		      len = NAMLEN (d);
+		      new->name = (char *) malloc (len + 1);
+		      if (new->name == NULL)
+			goto memory_error;
+#ifdef HAVE_MEMPCPY
+		      *((char *) mempcpy ((__ptr_t) new->name, name, len))
+			= '\0';
+#else
+		      memcpy ((__ptr_t) new->name, name, len);
+		      new->name[len] = '\0';
+#endif
+		      new->next = names;
+		      names = new;
+		      ++nfound;
+		    }
+		}
+	    }
+	}
+    }
+
+  if (nfound == 0 && (flags & GLOB_NOCHECK))
+    {
+      size_t len = strlen (pattern);
+      nfound = 1;
+      names = (struct globlink *) __alloca (sizeof (struct globlink));
+      names->next = NULL;
+      names->name = (char *) malloc (len + 1);
+      if (names->name == NULL)
+	goto memory_error;
+#ifdef HAVE_MEMPCPY
+      *((char *) mempcpy (names->name, pattern, len)) = '\0';
+#else
+      memcpy (names->name, pattern, len);
+      names->name[len] = '\0';
+#endif
+    }
+
+  if (nfound != 0)
+    {
+      pglob->gl_pathv
+	= (char **) realloc (pglob->gl_pathv,
+			     (pglob->gl_pathc +
+			      ((flags & GLOB_DOOFFS) ? pglob->gl_offs : 0) +
+			      nfound + 1) *
+			     sizeof (char *));
+      if (pglob->gl_pathv == NULL)
+	goto memory_error;
+
+      if (flags & GLOB_DOOFFS)
+	while (pglob->gl_pathc < pglob->gl_offs)
+	  pglob->gl_pathv[pglob->gl_pathc++] = NULL;
+
+      for (; names != NULL; names = names->next)
+	pglob->gl_pathv[pglob->gl_pathc++] = names->name;
+      pglob->gl_pathv[pglob->gl_pathc] = NULL;
+
+      pglob->gl_flags = flags;
+    }
+
+  save = errno;
+  if (stream != NULL)
+    {
+      if (flags & GLOB_ALTDIRFUNC)
+	(*pglob->gl_closedir) (stream);
+      else
+	closedir ((DIR *) stream);
+    }
+  __set_errno (save);
+
+  return nfound == 0 ? GLOB_NOMATCH : 0;
+
+ memory_error:
+  {
+    /*int*/ save = errno;
+    if (flags & GLOB_ALTDIRFUNC)
+      (*pglob->gl_closedir) (stream);
+    else
+      closedir ((DIR *) stream);
+    __set_errno (save);
+  }
+  while (names != NULL)
+    {
+      if (names->name != NULL)
+	free ((__ptr_t) names->name);
+      names = names->next;
+    }
+  return GLOB_NOSPACE;
+}
+
+#endif	/* Not ELIDE_CODE.  */
diff --git a/src/kmk/glob/glob.h b/src/kmk/glob/glob.h
new file mode 100644
index 0000000..5b82140
--- /dev/null
+++ b/src/kmk/glob/glob.h
@@ -0,0 +1,215 @@
+/* Copyright (C) 1991, 1992, 1995, 1996, 1997, 1998 Free Software Foundation,
+Inc.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with this library; see the file COPYING.LIB.  If not, write to the Free
+Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA.  */
+
+#ifndef	_GLOB_H
+#define	_GLOB_H	1
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#undef	__ptr_t
+#if defined __cplusplus || (defined __STDC__ && __STDC__) || defined WINDOWS32
+# if !defined __GLIBC__
+#  undef __P
+#  undef __PMT
+#  define __P(protos)	protos
+#  define __PMT(protos)	protos
+#  if !defined __GNUC__ || __GNUC__ < 2
+#   undef __const
+#   define __const const
+#  endif
+# endif
+# define __ptr_t	void *
+#else /* Not C++ or ANSI C.  */
+# undef	__P
+# undef __PMT
+# define __P(protos)	()
+# define __PMT(protos)	()
+# undef	__const
+# define __const
+# define __ptr_t	char *
+#endif /* C++ or ANSI C.  */
+
+/* We need `size_t' for the following definitions.  */
+#ifndef __size_t
+# if defined __FreeBSD__
+#  define __size_t size_t
+# else
+#  if defined __GNUC__ && __GNUC__ >= 2
+typedef __SIZE_TYPE__ __size_t;
+#  else
+/* This is a guess.  */
+/*hb
+ *	Conflicts with DECCs already defined type __size_t.
+ *	Defining an own type with a name beginning with '__' is no good.
+ *	Anyway if DECC is used and __SIZE_T is defined then __size_t is
+ *	already defined (and I hope it's exactly the one we need here).
+ */
+#   if !(defined __DECC && defined __SIZE_T)
+typedef unsigned long int __size_t;
+#   endif
+#  endif
+# endif
+#else
+/* The GNU CC stddef.h version defines __size_t as empty.  We need a real
+   definition.  */
+# undef __size_t
+# define __size_t size_t
+#endif
+
+/* Bits set in the FLAGS argument to `glob'.  */
+#define	GLOB_ERR	(1 << 0)/* Return on read errors.  */
+#define	GLOB_MARK	(1 << 1)/* Append a slash to each name.  */
+#define	GLOB_NOSORT	(1 << 2)/* Don't sort the names.  */
+#define	GLOB_DOOFFS	(1 << 3)/* Insert PGLOB->gl_offs NULLs.  */
+#define	GLOB_NOCHECK	(1 << 4)/* If nothing matches, return the pattern.  */
+#define	GLOB_APPEND	(1 << 5)/* Append to results of a previous call.  */
+#define	GLOB_NOESCAPE	(1 << 6)/* Backslashes don't quote metacharacters.  */
+#define	GLOB_PERIOD	(1 << 7)/* Leading `.' can be matched by metachars.  */
+
+#if (!defined _POSIX_C_SOURCE || _POSIX_C_SOURCE < 2 || defined _BSD_SOURCE \
+     || defined _GNU_SOURCE)
+# define GLOB_MAGCHAR	 (1 << 8)/* Set in gl_flags if any metachars seen.  */
+# define GLOB_ALTDIRFUNC (1 << 9)/* Use gl_opendir et al functions.  */
+# define GLOB_BRACE	 (1 << 10)/* Expand "{a,b}" to "a" "b".  */
+# define GLOB_NOMAGIC	 (1 << 11)/* If no magic chars, return the pattern.  */
+# define GLOB_TILDE	 (1 << 12)/* Expand ~user and ~ to home directories. */
+# define GLOB_ONLYDIR	 (1 << 13)/* Match only directories.  */
+# define GLOB_TILDE_CHECK (1 << 14)/* Like GLOB_TILDE but return an error
+				      if the user name is not available.  */
+# define __GLOB_FLAGS	(GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
+			 GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND|     \
+			 GLOB_PERIOD|GLOB_ALTDIRFUNC|GLOB_BRACE|     \
+			 GLOB_NOMAGIC|GLOB_TILDE|GLOB_ONLYDIR|GLOB_TILDE_CHECK)
+#else
+# define __GLOB_FLAGS	(GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
+			 GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND|     \
+			 GLOB_PERIOD)
+#endif
+
+/* Error returns from `glob'.  */
+#define	GLOB_NOSPACE	1	/* Ran out of memory.  */
+#define	GLOB_ABORTED	2	/* Read error.  */
+#define	GLOB_NOMATCH	3	/* No matches found.  */
+#define GLOB_NOSYS	4	/* Not implemented.  */
+#ifdef _GNU_SOURCE
+/* Previous versions of this file defined GLOB_ABEND instead of
+   GLOB_ABORTED.  Provide a compatibility definition here.  */
+# define GLOB_ABEND GLOB_ABORTED
+#endif
+
+/* Structure describing a globbing run.  */
+#if !defined _AMIGA && !defined VMS /* Buggy compiler.   */
+struct stat;
+#endif
+typedef struct
+  {
+    __size_t gl_pathc;		/* Count of paths matched by the pattern.  */
+    char **gl_pathv;		/* List of matched pathnames.  */
+    __size_t gl_offs;		/* Slots to reserve in `gl_pathv'.  */
+    int gl_flags;		/* Set to FLAGS, maybe | GLOB_MAGCHAR.  */
+
+    /* If the GLOB_ALTDIRFUNC flag is set, the following functions
+       are used instead of the normal file access functions.  */
+    void (*gl_closedir) __PMT ((void *));
+    struct dirent *(*gl_readdir) __PMT ((void *));
+    __ptr_t (*gl_opendir) __PMT ((__const char *));
+    int (*gl_lstat) __PMT ((__const char *, struct stat *));
+#if defined(VMS) && defined(__DECC) && !defined(_POSIX_C_SOURCE)
+    int (*gl_stat) __PMT ((__const char *, struct stat *, ...));
+#else
+    int (*gl_stat) __PMT ((__const char *, struct stat *));
+#endif
+#ifdef KMK
+# define GLOB_WITH_EXTENDED_KMK_MEMBERS
+    int (*gl_exists) __PMT ((__const char *));
+    int (*gl_isdir) __PMT ((__const char *));
+#endif
+  } glob_t;
+
+#ifdef _LARGEFILE64_SOURCE
+struct stat64;
+typedef struct
+  {
+    __size_t gl_pathc;
+    char **gl_pathv;
+    __size_t gl_offs;
+    int gl_flags;
+
+    /* If the GLOB_ALTDIRFUNC flag is set, the following functions
+       are used instead of the normal file access functions.  */
+    void (*gl_closedir) __PMT ((void *));
+    struct dirent64 *(*gl_readdir) __PMT ((void *));
+    __ptr_t (*gl_opendir) __PMT ((__const char *));
+    int (*gl_lstat) __PMT ((__const char *, struct stat64 *));
+    int (*gl_stat) __PMT ((__const char *, struct stat64 *));
+  } glob64_t;
+#endif
+
+#if _FILE_OFFSET_BITS == 64 && __GNUC__ < 2
+# define glob glob64
+# define globfree globfree64
+#else
+# ifdef _LARGEFILE64_SOURCE
+extern int glob64 __P ((__const char *__pattern, int __flags,
+			int (*__errfunc) (__const char *, int),
+			glob64_t *__pglob));
+
+extern void globfree64 __P ((glob64_t *__pglob));
+# endif
+#endif
+
+/* Do glob searching for PATTERN, placing results in PGLOB.
+   The bits defined above may be set in FLAGS.
+   If a directory cannot be opened or read and ERRFUNC is not nil,
+   it is called with the pathname that caused the error, and the
+   `errno' value from the failing call; if it returns non-zero
+   `glob' returns GLOB_ABEND; if it returns zero, the error is ignored.
+   If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
+   Otherwise, `glob' returns zero.  */
+#if _FILE_OFFSET_BITS != 64 || __GNUC__ < 2
+extern int glob __P ((__const char *__pattern, int __flags,
+		      int (*__errfunc) (__const char *, int),
+		      glob_t *__pglob));
+
+/* Free storage allocated in PGLOB by a previous `glob' call.  */
+extern void globfree __P ((glob_t *__pglob));
+#else
+extern int glob __P ((__const char *__pattern, int __flags,
+		      int (*__errfunc) (__const char *, int),
+		      glob_t *__pglob)) __asm__ ("glob64");
+
+extern void globfree __P ((glob_t *__pglob)) __asm__ ("globfree64");
+#endif
+
+
+#ifdef _GNU_SOURCE
+/* Return nonzero if PATTERN contains any metacharacters.
+   Metacharacters can be quoted with backslashes if QUOTE is nonzero.
+
+   This function is not part of the interface specified by POSIX.2
+   but several programs want to use it.  */
+extern int glob_pattern_p __P ((__const char *__pattern, int __quote));
+#endif
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* glob.h  */
diff --git a/src/kmk/gmk-default.scm b/src/kmk/gmk-default.scm
new file mode 100644
index 0000000..e7353f9
--- /dev/null
+++ b/src/kmk/gmk-default.scm
@@ -0,0 +1,53 @@
+;; Contents of the (gnu make) Guile module
+;; Copyright (C) 2011-2016 Free Software Foundation, Inc.
+;; This file is part of GNU Make.
+;;
+;; GNU Make is free software; you can redistribute it and/or modify it under
+;; the terms of the GNU General Public License as published by the Free
+;; Software Foundation; either version 3 of the License, or (at your option)
+;; any later version.
+;;
+;; GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+;; WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+;; FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+;; details.
+;;
+;; You should have received a copy of the GNU General Public License along
+;; with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+(define (to-string-maybe x)
+  (cond
+   ;; In GNU make, "false" is the empty string
+   ((or (not x)
+        (unspecified? x)
+        (variable? x)
+        (null? x)
+        (and (string? x) (string-null? x)))
+    #f)
+   ;; We want something not false... not sure about this
+   ((eq? x #t) "#t")
+   ;; Basics
+   ((or (symbol? x) (number? x))
+    (object->string x))
+   ((char? x)
+    (string x))
+   ;; Printable string (no special characters)
+   ((and (string? x) (string-every char-set:printing x))
+    x)
+   ;; No idea: fail
+   (else (error "Unknown object:" x))))
+
+(define (obj-to-str x)
+  (let ((acc '()))
+    (define (walk x)
+      (cond ((pair? x) (walk (car x)) (walk (cdr x)))
+            ((to-string-maybe x) => (lambda (s) (set! acc (cons s acc))))))
+    (walk x)
+    (string-join (reverse! acc))))
+
+;; Return the value of the GNU make variable V
+(define (gmk-var v)
+  (gmk-expand (format #f "$(~a)" (obj-to-str v))))
+
+;; Export the public interfaces
+(export gmk-expand gmk-eval gmk-var)
diff --git a/src/kmk/gnumake.h b/src/kmk/gnumake.h
new file mode 100644
index 0000000..b508562
--- /dev/null
+++ b/src/kmk/gnumake.h
@@ -0,0 +1,79 @@
+/* External interfaces usable by dynamic objects loaded into GNU Make.
+   --THIS API IS A "TECHNOLOGY PREVIEW" ONLY.  IT IS NOT A STABLE INTERFACE--
+
+Copyright (C) 2013-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GNUMAKE_H_
+#define _GNUMAKE_H_
+
+/* Specify the location of elements read from makefiles.  */
+typedef struct
+  {
+    const char *filenm;
+    unsigned long lineno;
+  } gmk_floc;
+
+typedef char *(*gmk_func_ptr)(const char *nm, unsigned int argc, char **argv);
+
+#ifdef _WIN32
+# ifdef GMK_BUILDING_MAKE
+#  define GMK_EXPORT  __declspec(dllexport)
+# else
+#  define GMK_EXPORT  __declspec(dllimport)
+# endif
+#else
+# define GMK_EXPORT
+#endif
+
+/* Free memory returned by the gmk_expand() function.  */
+GMK_EXPORT void gmk_free (char *str);
+
+/* Allocate memory in GNU make's context.  */
+GMK_EXPORT char *gmk_alloc (unsigned int len);
+
+/* Run $(eval ...) on the provided string BUFFER.  */
+GMK_EXPORT void gmk_eval (const char *buffer, const gmk_floc *floc);
+
+/* Run GNU make expansion on the provided string STR.
+   Returns an allocated buffer that the caller must free with gmk_free().  */
+GMK_EXPORT char *gmk_expand (const char *str);
+
+/* Register a new GNU make function NAME (maximum of 255 chars long).
+   When the function is expanded in the makefile, FUNC will be invoked with
+   the appropriate arguments.
+
+   The return value of FUNC must be either NULL, in which case it expands to
+   the empty string, or a pointer to the result of the expansion in a string
+   created by gmk_alloc().  GNU make will free the memory when it's done.
+
+   MIN_ARGS is the minimum number of arguments the function requires.
+   MAX_ARGS is the maximum number of arguments (or 0 if there's no maximum).
+   MIN_ARGS and MAX_ARGS may not exceed 255.
+
+   The FLAGS value may be GMK_FUNC_DEFAULT, or one or more of the following
+   flags OR'd together:
+
+     GMK_FUNC_NOEXPAND: the arguments to the function will be not be expanded
+                        before FUNC is called.
+*/
+GMK_EXPORT void gmk_add_function (const char *name, gmk_func_ptr func,
+                                  unsigned int min_args, unsigned int max_args,
+                                  unsigned int flags);
+
+#define GMK_FUNC_DEFAULT    0x00
+#define GMK_FUNC_NOEXPAND   0x01
+
+#endif  /* _GNUMAKE_H_ */
diff --git a/src/kmk/guile.c b/src/kmk/guile.c
new file mode 100644
index 0000000..1b055c3
--- /dev/null
+++ b/src/kmk/guile.c
@@ -0,0 +1,159 @@
+/* GNU Guile interface for GNU Make.
+Copyright (C) 2011-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#ifdef HAVE_GUILE
+
+#include "gnumake.h"
+
+#include "debug.h"
+#include "filedef.h"
+#include "dep.h"
+#include "variable.h"
+
+#include <libguile.h>
+
+/* Pre-2.0 versions of Guile don't have a typedef for gsubr function types.  */
+#if SCM_MAJOR_VERSION < 2
+# define GSUBR_TYPE         SCM (*) ()
+/* Guile 1.x doesn't really support i18n.  */
+# define EVAL_STRING(_s)    scm_c_eval_string (_s)
+#else
+# define GSUBR_TYPE         scm_t_subr
+# define EVAL_STRING(_s)    scm_eval_string (scm_from_utf8_string (_s))
+#endif
+
+static SCM make_mod = SCM_EOL;
+static SCM obj_to_str = SCM_EOL;
+
+/* Convert an SCM object into a string.  */
+static char *
+cvt_scm_to_str (SCM obj)
+{
+  return scm_to_locale_string (scm_call_1 (obj_to_str, obj));
+}
+
+/* Perform the GNU make expansion function.  */
+static SCM
+guile_expand_wrapper (SCM obj)
+{
+  char *str = cvt_scm_to_str (obj);
+  SCM ret;
+  char *res;
+
+  DB (DB_BASIC, (_("guile: Expanding '%s'\n"), str));
+  res = gmk_expand (str);
+  ret = scm_from_locale_string (res);
+
+  free (str);
+  free (res);
+
+  return ret;
+}
+
+/* Perform the GNU make eval function.  */
+static SCM
+guile_eval_wrapper (SCM obj)
+{
+  char *str = cvt_scm_to_str (obj);
+
+  DB (DB_BASIC, (_("guile: Evaluating '%s'\n"), str));
+  gmk_eval (str, 0);
+
+  return SCM_BOOL_F;
+}
+
+/* Invoked by scm_c_define_module(), in the context of the GNU make module.  */
+static void
+guile_define_module (void *data UNUSED)
+{
+/* Ingest the predefined Guile module for GNU make.  */
+#include "gmk-default.h"
+
+  /* Register a subr for GNU make's eval capability.  */
+  scm_c_define_gsubr ("gmk-expand", 1, 0, 0, (GSUBR_TYPE) guile_expand_wrapper);
+
+  /* Register a subr for GNU make's eval capability.  */
+  scm_c_define_gsubr ("gmk-eval", 1, 0, 0, (GSUBR_TYPE) guile_eval_wrapper);
+
+  /* Define the rest of the module.  */
+  scm_c_eval_string (GUILE_module_defn);
+}
+
+/* Initialize the GNU make Guile module.  */
+static void *
+guile_init (void *arg UNUSED)
+{
+  /* Define the module.  */
+  make_mod = scm_c_define_module ("gnu make", guile_define_module, NULL);
+
+  /* Get a reference to the object-to-string translator, for later.  */
+  obj_to_str = scm_variable_ref (scm_c_module_lookup (make_mod, "obj-to-str"));
+
+  /* Import the GNU make module exports into the generic space.  */
+  scm_c_eval_string ("(use-modules (gnu make))");
+
+  return NULL;
+}
+
+static void *
+internal_guile_eval (void *arg)
+{
+  return cvt_scm_to_str (EVAL_STRING (arg));
+}
+
+/* This is the function registered with make  */
+static char *
+func_guile (const char *funcname UNUSED, unsigned int argc UNUSED, char **argv)
+{
+  static int init = 0;
+
+  if (! init)
+    {
+      /* Initialize the Guile interpreter.  */
+      scm_with_guile (guile_init, NULL);
+      init = 1;
+    }
+
+  if (argv[0] && argv[0][0] != '\0')
+    return scm_with_guile (internal_guile_eval, argv[0]);
+
+  return NULL;
+}
+
+/* ----- Public interface ----- */
+
+/* We could send the flocp to define_new_function(), but since guile is
+   "kind of" built-in, that didn't seem so useful.  */
+int
+guile_gmake_setup (const floc *flocp UNUSED)
+{
+  /* Create a make function "guile".  */
+  gmk_add_function ("guile", func_guile, 0, 1, GMK_FUNC_DEFAULT);
+
+  return 1;
+}
+
+#else
+
+int
+guile_gmake_setup (const floc *flocp UNUSED)
+{
+  return 1;
+}
+
+#endif
diff --git a/src/kmk/hash.c b/src/kmk/hash.c
new file mode 100644
index 0000000..070d2e4
--- /dev/null
+++ b/src/kmk/hash.c
@@ -0,0 +1,536 @@
+/* hash.c -- hash table maintenance
+Copyright (C) 1995, 1999, 2002, 2010 Free Software Foundation, Inc.
+Written by Greg McGary <gkm@gnu.org> <greg@mcgary.org>
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "hash.h"
+#ifdef CONFIG_WITH_STRCACHE2
+# include <assert.h>
+#endif
+
+#define	CALLOC(t, n) ((t *) xcalloc (sizeof (t) * (n)))
+#define MALLOC(t, n) ((t *) xmalloc (sizeof (t) * (n)))
+#define REALLOC(o, t, n) ((t *) xrealloc ((o), sizeof (t) * (n)))
+#define CLONE(o, t, n) ((t *) memcpy (MALLOC (t, (n)), (o), sizeof (t) * (n)))
+
+static void hash_rehash __P((struct hash_table* ht));
+static unsigned long round_up_2 __P((unsigned long rough));
+
+/* Implement double hashing with open addressing.  The table size is
+   always a power of two.  The secondary ('increment') hash function
+   is forced to return an odd-value, in order to be relatively prime
+   to the table size.  This guarantees that the increment can
+   potentially hit every slot in the table during collision
+   resolution.  */
+
+void *hash_deleted_item = &hash_deleted_item;
+
+/* Force the table size to be a power of two, possibly rounding up the
+   given size.  */
+
+void
+hash_init (struct hash_table *ht, unsigned long size,
+           hash_func_t hash_1, hash_func_t hash_2, hash_cmp_func_t hash_cmp)
+{
+  ht->ht_size = round_up_2 (size);
+  ht->ht_empty_slots = ht->ht_size;
+  ht->ht_vec = (void**) CALLOC (struct token *, ht->ht_size);
+  if (ht->ht_vec == 0)
+    {
+      fprintf (stderr, _("can't allocate %lu bytes for hash table: memory exhausted"),
+	       ht->ht_size * (unsigned long) sizeof (struct token *));
+      exit (MAKE_TROUBLE);
+    }
+
+  ht->ht_capacity = ht->ht_size - (ht->ht_size / 16); /* 93.75% loading factor */
+  ht->ht_fill = 0;
+  ht->ht_collisions = 0;
+  ht->ht_lookups = 0;
+  ht->ht_rehashes = 0;
+  ht->ht_hash_1 = hash_1;
+  ht->ht_hash_2 = hash_2;
+  ht->ht_compare = hash_cmp;
+#ifdef CONFIG_WITH_STRCACHE2
+  ht->ht_strcache = 0;
+  ht->ht_off_string = 0;
+#endif
+}
+
+#ifdef CONFIG_WITH_STRCACHE2
+/* Same as hash_init, except that no callbacks are needed since all
+   keys - including the ones being searched for - are from a string
+   cache.  This means that any give string will only have one pointer
+   value and that the hash and length can be retrived very cheaply,
+   thus permitting some nice optimizations.
+
+   STRCACHE points to the string cache, while OFF_STRING gives the
+   offset of the string pointer in the item structures the hash table
+   entries points to.  */
+void hash_init_strcached (struct hash_table *ht, unsigned long size,
+                          struct strcache2 *strcache, unsigned int off_string)
+{
+  hash_init (ht, size, 0, 0, 0);
+  ht->ht_strcache = strcache;
+  ht->ht_off_string = off_string;
+}
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+/* Load an array of items into 'ht'.  */
+
+void
+hash_load (struct hash_table *ht, void *item_table,
+           unsigned long cardinality, unsigned long size)
+{
+  char *items = (char *) item_table;
+#ifndef CONFIG_WITH_STRCACHE2
+  while (cardinality--)
+    {
+      hash_insert (ht, items);
+      items += size;
+    }
+#else  /* CONFIG_WITH_STRCACHE2 */
+  if (ht->ht_strcache)
+    while (cardinality--)
+      {
+        hash_insert_strcached (ht, items);
+        items += size;
+      }
+  else
+    while (cardinality--)
+      {
+        hash_insert (ht, items);
+        items += size;
+      }
+#endif /* CONFIG_WITH_STRCACHE2 */
+}
+
+/* Returns the address of the table slot matching 'key'.  If 'key' is
+   not found, return the address of an empty slot suitable for
+   inserting 'key'.  The caller is responsible for incrementing
+   ht_fill on insertion.  */
+
+void **
+hash_find_slot (struct hash_table *ht, const void *key)
+{
+  void **slot;
+  void **deleted_slot = 0;
+  unsigned int hash_2 = 0;
+  unsigned int hash_1 = (*ht->ht_hash_1) (key);
+
+#ifdef CONFIG_WITH_STRCACHE2
+  assert (ht->ht_strcache == 0);
+#endif
+
+  MAKE_STATS (ht->ht_lookups++);
+  MAKE_STATS_3 (make_stats_ht_lookups++);
+  for (;;)
+    {
+      hash_1 &= (ht->ht_size - 1);
+      slot = &ht->ht_vec[hash_1];
+
+      if (*slot == 0)
+	return (deleted_slot ? deleted_slot : slot);
+      if (*slot == hash_deleted_item)
+	{
+	  if (deleted_slot == 0)
+	    deleted_slot = slot;
+	}
+      else
+	{
+	  if (key == *slot)
+	    return slot;
+	  if ((*ht->ht_compare) (key, *slot) == 0)
+	    return slot;
+	  MAKE_STATS (ht->ht_collisions++);
+	  MAKE_STATS_3 (make_stats_ht_collisions++);
+	}
+      if (!hash_2)
+	  hash_2 = (*ht->ht_hash_2) (key) | 1;
+      hash_1 += hash_2;
+    }
+}
+
+#ifdef CONFIG_WITH_STRCACHE2
+/* hash_find_slot version for tables created with hash_init_strcached.  */
+void **
+hash_find_slot_strcached (struct hash_table *ht, const void *key)
+{
+  void **slot;
+  void **deleted_slot = 0;
+  const char *str1 = *(const char **)((const char *)key + ht->ht_off_string);
+  const char *str2;
+  unsigned int hash_1 = strcache2_calc_ptr_hash (ht->ht_strcache, str1);
+  unsigned int hash_2;
+
+#ifdef CONFIG_WITH_STRCACHE2
+  assert (ht->ht_strcache != 0);
+#endif
+
+  MAKE_STATS (ht->ht_lookups++);
+  MAKE_STATS_3 (make_stats_ht_lookups++);
+
+  /* first iteration unrolled. */
+
+  hash_1 &= (ht->ht_size - 1);
+  slot = &ht->ht_vec[hash_1];
+  if (*slot == 0)
+    return slot;
+  if (*slot != hash_deleted_item)
+    {
+      str2 = *(const char **)((const char *)(*slot) + ht->ht_off_string);
+      if (str1 == str2)
+        return slot;
+
+      MAKE_STATS (ht->ht_collisions++);
+      MAKE_STATS_3 (make_stats_ht_collisions++);
+    }
+  else
+    deleted_slot = slot;
+
+  /* the rest of the loop. */
+
+  hash_2 = strcache2_get_hash (ht->ht_strcache, str1) | 1;
+  hash_1 += hash_2;
+  for (;;)
+    {
+      hash_1 &= (ht->ht_size - 1);
+      slot = &ht->ht_vec[hash_1];
+
+      if (*slot == 0)
+	return (deleted_slot ? deleted_slot : slot);
+      if (*slot == hash_deleted_item)
+	{
+	  if (deleted_slot == 0)
+	    deleted_slot = slot;
+	}
+      else
+	{
+          str2 = *(const char **)((const char *)(*slot) + ht->ht_off_string);
+          if (str1 == str2)
+	    return slot;
+
+	  MAKE_STATS (ht->ht_collisions++);
+	  MAKE_STATS_3 (make_stats_ht_collisions++);
+	}
+
+      hash_1 += hash_2;
+    }
+}
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+void *
+hash_find_item (struct hash_table *ht, const void *key)
+{
+  void **slot = hash_find_slot (ht, key);
+  return ((HASH_VACANT (*slot)) ? 0 : *slot);
+}
+
+#ifdef CONFIG_WITH_STRCACHE2
+void *
+hash_find_item_strcached (struct hash_table *ht, const void *key)
+{
+  void **slot = hash_find_slot_strcached (ht, key);
+  return ((HASH_VACANT (*slot)) ? 0 : *slot);
+}
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+void *
+hash_insert (struct hash_table *ht, const void *item)
+{
+  void **slot = hash_find_slot (ht, item);
+  const void *old_item = *slot;
+  hash_insert_at (ht, item, slot);
+  return (void *)((HASH_VACANT (old_item)) ? 0 : old_item);
+}
+
+#ifdef CONFIG_WITH_STRCACHE2
+void *
+hash_insert_strcached (struct hash_table *ht, const void *item)
+{
+  void **slot = hash_find_slot_strcached (ht, item);
+  const void *old_item = slot ? *slot : 0;
+  hash_insert_at (ht, item, slot);
+  return (void *)((HASH_VACANT (old_item)) ? 0 : old_item);
+}
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+void *
+hash_insert_at (struct hash_table *ht, const void *item, const void *slot)
+{
+  const void *old_item = *(void **) slot;
+  if (HASH_VACANT (old_item))
+    {
+      ht->ht_fill++;
+      if (old_item == 0)
+	ht->ht_empty_slots--;
+      old_item = item;
+    }
+  *(void const **) slot = item;
+  if (ht->ht_empty_slots < ht->ht_size - ht->ht_capacity)
+    {
+      hash_rehash (ht);
+#ifdef CONFIG_WITH_STRCACHE2
+      if (ht->ht_strcache)
+        return (void *)hash_find_slot_strcached (ht, item);
+#endif /* CONFIG_WITH_STRCACHE2 */
+      return (void *) hash_find_slot (ht, item);
+    }
+  else
+    return (void *) slot;
+}
+
+void *
+hash_delete (struct hash_table *ht, const void *item)
+{
+  void **slot = hash_find_slot (ht, item);
+  return hash_delete_at (ht, slot);
+}
+
+#ifdef CONFIG_WITH_STRCACHE2
+void *
+hash_delete_strcached (struct hash_table *ht, const void *item)
+{
+  void **slot = hash_find_slot_strcached (ht, item);
+  return hash_delete_at (ht, slot);
+}
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+void *
+hash_delete_at (struct hash_table *ht, const void *slot)
+{
+  void *item = *(void **) slot;
+  if (!HASH_VACANT (item))
+    {
+      *(void const **) slot = hash_deleted_item;
+      ht->ht_fill--;
+      return item;
+    }
+  else
+    return 0;
+}
+
+void
+hash_free_items (struct hash_table *ht)
+{
+  void **vec = ht->ht_vec;
+  void **end = &vec[ht->ht_size];
+  for (; vec < end; vec++)
+    {
+      void *item = *vec;
+      if (!HASH_VACANT (item))
+	free (item);
+      *vec = 0;
+    }
+  ht->ht_fill = 0;
+  ht->ht_empty_slots = ht->ht_size;
+}
+
+#ifdef CONFIG_WITH_ALLOC_CACHES
+void
+hash_free_items_cached (struct hash_table *ht, struct alloccache *cache)
+{
+  void **vec = ht->ht_vec;
+  void **end = &vec[ht->ht_size];
+  for (; vec < end; vec++)
+    {
+      void *item = *vec;
+      if (!HASH_VACANT (item))
+	alloccache_free (cache, item);
+      *vec = 0;
+    }
+  ht->ht_fill = 0;
+  ht->ht_empty_slots = ht->ht_size;
+}
+#endif /* CONFIG_WITH_ALLOC_CACHES */
+
+void
+hash_delete_items (struct hash_table *ht)
+{
+  void **vec = ht->ht_vec;
+  void **end = &vec[ht->ht_size];
+  for (; vec < end; vec++)
+    *vec = 0;
+  ht->ht_fill = 0;
+  ht->ht_collisions = 0;
+  ht->ht_lookups = 0;
+  ht->ht_rehashes = 0;
+  ht->ht_empty_slots = ht->ht_size;
+}
+
+void
+hash_free (struct hash_table *ht, int free_items)
+{
+  if (free_items)
+    hash_free_items (ht);
+  else
+    {
+      ht->ht_fill = 0;
+      ht->ht_empty_slots = ht->ht_size;
+    }
+  free (ht->ht_vec);
+  ht->ht_vec = 0;
+  ht->ht_capacity = 0;
+}
+
+#ifdef CONFIG_WITH_ALLOC_CACHES
+void
+hash_free_cached (struct hash_table *ht, int free_items, struct alloccache *cache)
+{
+  if (free_items)
+    hash_free_items_cached (ht, cache);
+  else
+    {
+      ht->ht_fill = 0;
+      ht->ht_empty_slots = ht->ht_size;
+    }
+  free (ht->ht_vec);
+  ht->ht_vec = 0;
+  ht->ht_capacity = 0;
+}
+#endif /* CONFIG_WITH_ALLOC_CACHES */
+
+void
+hash_map (struct hash_table *ht, hash_map_func_t map)
+{
+  void **slot;
+  void **end = &ht->ht_vec[ht->ht_size];
+
+  for (slot = ht->ht_vec; slot < end; slot++)
+    {
+      if (!HASH_VACANT (*slot))
+	(*map) (*slot);
+    }
+}
+
+void
+hash_map_arg (struct hash_table *ht, hash_map_arg_func_t map, void *arg)
+{
+  void **slot;
+  void **end = &ht->ht_vec[ht->ht_size];
+
+  for (slot = ht->ht_vec; slot < end; slot++)
+    {
+      if (!HASH_VACANT (*slot))
+	(*map) (*slot, arg);
+    }
+}
+
+/* Double the size of the hash table in the event of overflow... */
+
+static void
+hash_rehash (struct hash_table *ht)
+{
+  unsigned long old_ht_size = ht->ht_size;
+  void **old_vec = ht->ht_vec;
+  void **ovp;
+
+  if (ht->ht_fill >= ht->ht_capacity)
+    {
+      ht->ht_size *= 2;
+      ht->ht_capacity = ht->ht_size - (ht->ht_size >> 4);
+    }
+  ht->ht_rehashes++;
+  ht->ht_vec = (void **) CALLOC (struct token *, ht->ht_size);
+
+#ifndef CONFIG_WITH_STRCACHE2
+  for (ovp = old_vec; ovp < &old_vec[old_ht_size]; ovp++)
+    {
+      if (! HASH_VACANT (*ovp))
+	{
+	  void **slot = hash_find_slot (ht, *ovp);
+	  *slot = *ovp;
+	}
+    }
+#else  /* CONFIG_WITH_STRCACHE2 */
+  if (ht->ht_strcache)
+    for (ovp = old_vec; ovp < &old_vec[old_ht_size]; ovp++)
+      {
+        if (! HASH_VACANT (*ovp))
+          {
+            void **slot = hash_find_slot_strcached (ht, *ovp);
+            *slot = *ovp;
+          }
+      }
+  else
+    for (ovp = old_vec; ovp < &old_vec[old_ht_size]; ovp++)
+      {
+        if (! HASH_VACANT (*ovp))
+          {
+            void **slot = hash_find_slot (ht, *ovp);
+            *slot = *ovp;
+          }
+      }
+#endif /* CONFIG_WITH_STRCACHE2 */
+  ht->ht_empty_slots = ht->ht_size - ht->ht_fill;
+  free (old_vec);
+}
+
+void
+hash_print_stats (struct hash_table *ht, FILE *out_FILE)
+{
+  /* GKM FIXME: honor NO_FLOAT */
+  fprintf (out_FILE, _("Load=%ld/%ld=%.0f%%, "), ht->ht_fill, ht->ht_size,
+	   100.0 * (double) ht->ht_fill / (double) ht->ht_size);
+  fprintf (out_FILE, _("Rehash=%d, "), ht->ht_rehashes);
+  MAKE_STATS(
+  fprintf (out_FILE, _("Collisions=%ld/%ld=%.0f%%"), ht->ht_collisions, ht->ht_lookups,
+	   (ht->ht_lookups
+	    ? (100.0 * (double) ht->ht_collisions / (double) ht->ht_lookups)
+	    : 0));
+  );
+}
+
+/* Dump all items into a NULL-terminated vector.  Use the
+   user-supplied vector, or malloc one.  */
+
+void **
+hash_dump (struct hash_table *ht, void **vector_0, qsort_cmp_t compare)
+{
+  void **vector;
+  void **slot;
+  void **end = &ht->ht_vec[ht->ht_size];
+
+  if (vector_0 == 0)
+    vector_0 = MALLOC (void *, ht->ht_fill + 1);
+  vector = vector_0;
+
+  for (slot = ht->ht_vec; slot < end; slot++)
+    if (!HASH_VACANT (*slot))
+      *vector++ = *slot;
+  *vector = 0;
+
+  if (compare)
+    qsort (vector_0, ht->ht_fill, sizeof (void *), compare);
+  return vector_0;
+}
+
+/* Round a given number up to the nearest power of 2. */
+
+static unsigned long
+round_up_2 (unsigned long n)
+{
+  n |= (n >> 1);
+  n |= (n >> 2);
+  n |= (n >> 4);
+  n |= (n >> 8);
+  n |= (n >> 16);
+
+#if !defined(HAVE_LIMITS_H) || ULONG_MAX > 4294967295
+  /* We only need this on systems where unsigned long is >32 bits.  */
+  n |= (n >> 32);
+#endif
+
+  return n + 1;
+}
diff --git a/src/kmk/hash.h b/src/kmk/hash.h
new file mode 100644
index 0000000..0a43369
--- /dev/null
+++ b/src/kmk/hash.h
@@ -0,0 +1,251 @@
+/* hash.h -- decls for hash table
+Copyright (C) 1995, 1999, 2002, 2010 Free Software Foundation, Inc.
+Written by Greg McGary <gkm@gnu.org> <greg@mcgary.org>
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _hash_h_
+#define _hash_h_
+
+#include <stdio.h>
+#include <ctype.h>
+
+#if defined __cplusplus || (defined __STDC__ && __STDC__) || defined WINDOWS32
+# if !defined __GLIBC__ || !defined __P
+#  undef	__P
+#  define __P(protos)	protos
+# endif
+#else /* Not C++ or ANSI C.  */
+# undef	__P
+# define __P(protos)	()
+/* We can get away without defining 'const' here only because in this file
+   it is used only inside the prototype for 'fnmatch', which is elided in
+   non-ANSI C where 'const' is problematical.  */
+#endif /* C++ or ANSI C.  */
+
+typedef unsigned long (*hash_func_t) __P((void const *key));
+typedef int (*hash_cmp_func_t) __P((void const *x, void const *y));
+typedef void (*hash_map_func_t) __P((void const *item));
+typedef void (*hash_map_arg_func_t) __P((void const *item, void *arg));
+
+struct hash_table
+{
+  void **ht_vec;
+  hash_func_t ht_hash_1;	/* primary hash function */
+  hash_func_t ht_hash_2;	/* secondary hash function */
+  hash_cmp_func_t ht_compare;	/* comparison function */
+  unsigned long ht_size;	/* total number of slots (power of 2) */
+  unsigned long ht_capacity;	/* usable slots, limited by loading-factor */
+  unsigned long ht_fill;	/* items in table */
+  unsigned long ht_empty_slots;	/* empty slots not including deleted slots */
+  unsigned long ht_collisions;	/* # of failed calls to comparison function */
+  unsigned long ht_lookups;	/* # of queries */
+  unsigned int ht_rehashes;	/* # of times we've expanded table */
+#ifdef CONFIG_WITH_STRCACHE2
+  struct strcache2 *ht_strcache; /* the string cache pointer. */
+  unsigned int ht_off_string;  /* offsetof (struct key, string) */
+#endif
+};
+
+typedef int (*qsort_cmp_t) __P((void const *, void const *));
+
+void hash_init __P((struct hash_table *ht, unsigned long size,
+		    hash_func_t hash_1, hash_func_t hash_2, hash_cmp_func_t hash_cmp));
+void hash_load __P((struct hash_table *ht, void *item_table,
+		    unsigned long cardinality, unsigned long size));
+void **hash_find_slot __P((struct hash_table *ht, void const *key));
+void *hash_find_item __P((struct hash_table *ht, void const *key));
+void *hash_insert __P((struct hash_table *ht, const void *item));
+void *hash_insert_at __P((struct hash_table *ht, const void *item, void const *slot));
+void *hash_delete __P((struct hash_table *ht, void const *item));
+void *hash_delete_at __P((struct hash_table *ht, void const *slot));
+void hash_delete_items __P((struct hash_table *ht));
+void hash_free_items __P((struct hash_table *ht));
+void hash_free __P((struct hash_table *ht, int free_items));
+#ifdef CONFIG_WITH_ALLOC_CACHES
+void hash_free_items_cached __P((struct hash_table *ht, struct alloccache *cache));
+void hash_free_cached __P((struct hash_table *ht, int free_items, struct alloccache *cache));
+#endif
+void hash_map __P((struct hash_table *ht, hash_map_func_t map));
+void hash_map_arg __P((struct hash_table *ht, hash_map_arg_func_t map, void *arg));
+void hash_print_stats __P((struct hash_table *ht, FILE *out_FILE));
+void **hash_dump __P((struct hash_table *ht, void **vector_0, qsort_cmp_t compare));
+
+#ifdef CONFIG_WITH_STRCACHE2
+void hash_init_strcached __P((struct hash_table *ht, unsigned long size,
+                              struct strcache2 *strcache, unsigned int off_strptr));
+void **hash_find_slot_strcached __P((struct hash_table *ht, const void *key));
+void *hash_find_item_strcached __P((struct hash_table *ht, void const *key));
+void *hash_insert_strcached __P((struct hash_table *ht, const void *item));
+void *hash_delete_strcached __P((struct hash_table *ht, void const *item));
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+extern void *hash_deleted_item;
+#define HASH_VACANT(item) ((item) == 0 || (void *) (item) == hash_deleted_item)
+
+
+/* hash and comparison macros for case-sensitive string keys. */
+
+/* Due to the strcache, it's not uncommon for the string pointers to
+   be identical.  Take advantage of that to short-circuit string compares.  */
+
+#define STRING_HASH_1(KEY, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
+  while (*++_key_) \
+    (RESULT) += (*_key_ << (_key_[1] & 0xf)); \
+} while (0)
+#define return_STRING_HASH_1(KEY) do { \
+  unsigned long _result_ = 0; \
+  STRING_HASH_1 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define STRING_HASH_2(KEY, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
+  while (*++_key_) \
+    (RESULT) += (*_key_ << (_key_[1] & 0x7)); \
+} while (0)
+#define return_STRING_HASH_2(KEY) do { \
+  unsigned long _result_ = 0; \
+  STRING_HASH_2 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define STRING_COMPARE(X, Y, RESULT) do { \
+    RESULT = (X) == (Y) ? 0 : strcmp ((X), (Y)); \
+} while (0)
+#define return_STRING_COMPARE(X, Y) do { \
+  return (X) == (Y) ? 0 : strcmp ((X), (Y)); \
+} while (0)
+
+
+#define STRING_N_HASH_1(KEY, N, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
+  int _n_ = (N); \
+  if (_n_) \
+    while (--_n_ && *++_key_) \
+      (RESULT) += (*_key_ << (_key_[1] & 0xf)); \
+  (RESULT) += *++_key_; \
+} while (0)
+#define return_STRING_N_HASH_1(KEY, N) do { \
+  unsigned long _result_ = 0; \
+  STRING_N_HASH_1 ((KEY), (N), _result_); \
+  return _result_; \
+} while (0)
+
+#define STRING_N_HASH_2(KEY, N, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
+  int _n_ = (N); \
+  if (_n_) \
+    while (--_n_ && *++_key_) \
+      (RESULT) += (*_key_ << (_key_[1] & 0x7)); \
+  (RESULT) += *++_key_; \
+} while (0)
+#define return_STRING_N_HASH_2(KEY, N) do { \
+  unsigned long _result_ = 0; \
+  STRING_N_HASH_2 ((KEY), (N), _result_); \
+  return _result_; \
+} while (0)
+
+#define STRING_N_COMPARE(X, Y, N, RESULT) do { \
+  RESULT = (X) == (Y) ? 0 : strncmp ((X), (Y), (N)); \
+} while (0)
+#define return_STRING_N_COMPARE(X, Y, N) do { \
+  return (X) == (Y) ? 0 : strncmp ((X), (Y), (N)); \
+} while (0)
+
+#ifdef HAVE_CASE_INSENSITIVE_FS
+
+/* hash and comparison macros for case-insensitive string _key_s. */
+
+#define ISTRING_HASH_1(KEY, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
+  while (*++_key_) \
+    (RESULT) += ((isupper (*_key_) ? tolower (*_key_) : *_key_) << (_key_[1] & 0xf)); \
+} while (0)
+#define return_ISTRING_HASH_1(KEY) do { \
+  unsigned long _result_ = 0; \
+  ISTRING_HASH_1 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define ISTRING_HASH_2(KEY, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
+  while (*++_key_) \
+    (RESULT) += ((isupper (*_key_) ? tolower (*_key_) : *_key_) << (_key_[1] & 0x7)); \
+} while (0)
+#define return_ISTRING_HASH_2(KEY) do { \
+  unsigned long _result_ = 0; \
+  ISTRING_HASH_2 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define ISTRING_COMPARE(X, Y, RESULT) do { \
+  RESULT = (X) == (Y) ? 0 : strcasecmp ((X), (Y)); \
+} while (0)
+#define return_ISTRING_COMPARE(X, Y) do { \
+  return (X) == (Y) ? 0 : strcasecmp ((X), (Y)); \
+} while (0)
+
+#else
+
+#define ISTRING_HASH_1(KEY, RESULT) STRING_HASH_1 ((KEY), (RESULT))
+#define return_ISTRING_HASH_1(KEY) return_STRING_HASH_1 (KEY)
+
+#define ISTRING_HASH_2(KEY, RESULT) STRING_HASH_2 ((KEY), (RESULT))
+#define return_ISTRING_HASH_2(KEY) return_STRING_HASH_2 (KEY)
+
+#define ISTRING_COMPARE(X, Y, RESULT) STRING_COMPARE ((X), (Y), (RESULT))
+#define return_ISTRING_COMPARE(X, Y) return_STRING_COMPARE ((X), (Y))
+
+#endif
+
+/* hash and comparison macros for integer _key_s. */
+
+#define INTEGER_HASH_1(KEY, RESULT) do { \
+  (RESULT) += ((unsigned long)(KEY)); \
+} while (0)
+#define return_INTEGER_HASH_1(KEY) do { \
+  unsigned long _result_ = 0; \
+  INTEGER_HASH_1 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define INTEGER_HASH_2(KEY, RESULT) do { \
+  (RESULT) += ~((unsigned long)(KEY)); \
+} while (0)
+#define return_INTEGER_HASH_2(KEY) do { \
+  unsigned long _result_ = 0; \
+  INTEGER_HASH_2 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define INTEGER_COMPARE(X, Y, RESULT) do { \
+  (RESULT) = X - Y; \
+} while (0)
+#define return_INTEGER_COMPARE(X, Y) do { \
+  int _result_; \
+  INTEGER_COMPARE (X, Y, _result_); \
+  return _result_; \
+} while (0)
+
+/* hash and comparison macros for address keys. */
+
+#define ADDRESS_HASH_1(KEY, RESULT) INTEGER_HASH_1 (((unsigned long)(KEY)) >> 3, (RESULT))
+#define ADDRESS_HASH_2(KEY, RESULT) INTEGER_HASH_2 (((unsigned long)(KEY)) >> 3, (RESULT))
+#define ADDRESS_COMPARE(X, Y, RESULT) INTEGER_COMPARE ((X), (Y), (RESULT))
+#define return_ADDRESS_HASH_1(KEY) return_INTEGER_HASH_1 (((unsigned long)(KEY)) >> 3)
+#define return_ADDRESS_HASH_2(KEY) return_INTEGER_HASH_2 (((unsigned long)(KEY)) >> 3)
+#define return_ADDRESS_COMPARE(X, Y) return_INTEGER_COMPARE ((X), (Y))
+
+#endif /* not _hash_h_ */
diff --git a/src/kmk/implicit.c b/src/kmk/implicit.c
new file mode 100644
index 0000000..0658470
--- /dev/null
+++ b/src/kmk/implicit.c
@@ -0,0 +1,1011 @@
+/* Implicit rule searching for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "rule.h"
+#include "dep.h"
+#include "debug.h"
+#include "variable.h"
+#include "job.h"      /* struct child, used inside commands.h */
+#include "commands.h" /* set_file_variables */
+
+static int pattern_search (struct file *file, int archive,
+                           unsigned int depth, unsigned int recursions);
+
+/* For a FILE which has no commands specified, try to figure out some
+   from the implicit pattern rules.
+   Returns 1 if a suitable implicit rule was found,
+   after modifying FILE to contain the appropriate commands and deps,
+   or returns 0 if no implicit rule was found.  */
+
+int
+try_implicit_rule (struct file *file, unsigned int depth)
+{
+  DBF (DB_IMPLICIT, _("Looking for an implicit rule for '%s'.\n"));
+
+  /* The order of these searches was previously reversed.  My logic now is
+     that since the non-archive search uses more information in the target
+     (the archive search omits the archive name), it is more specific and
+     should come first.  */
+
+  if (pattern_search (file, 0, depth, 0))
+    return 1;
+
+#ifndef NO_ARCHIVES
+  /* If this is an archive member reference, use just the
+     archive member name to search for implicit rules.  */
+  if (ar_name (file->name))
+    {
+      DBF (DB_IMPLICIT,
+           _("Looking for archive-member implicit rule for '%s'.\n"));
+      if (pattern_search (file, 1, depth, 0))
+        return 1;
+    }
+#endif
+
+  return 0;
+}
+
+
+/* Scans the BUFFER for the next word with whitespace as a separator.
+   Returns the pointer to the beginning of the word. LENGTH hold the
+   length of the word.  */
+
+static const char *
+get_next_word (const char *buffer, unsigned int *length)
+{
+  const char *p = buffer, *beg;
+  char c;
+
+  /* Skip any leading whitespace.  */
+  NEXT_TOKEN (p);
+
+  beg = p;
+  c = *(p++);
+
+  if (c == '\0')
+    {
+      if (length)   /* bird: shut up gcc. */
+        *length = 0;
+      return 0;
+    }
+
+
+  /* We already found the first value of "c", above.  */
+  while (1)
+    {
+      char closeparen;
+      int count;
+
+      switch (c)
+        {
+        case '\0':
+        case ' ':
+        case '\t':
+          goto done_word;
+
+        case '$':
+          c = *(p++);
+          if (c == '$')
+            break;
+
+          /* This is a variable reference, so read it to the matching
+             close paren.  */
+
+          if (c == '(')
+            closeparen = ')';
+          else if (c == '{')
+            closeparen = '}';
+          else
+            /* This is a single-letter variable reference.  */
+            break;
+
+          for (count = 0; *p != '\0'; ++p)
+            {
+              if (*p == c)
+                ++count;
+              else if (*p == closeparen && --count < 0)
+                {
+                  ++p;
+                  break;
+                }
+            }
+          break;
+
+        case '|':
+          goto done;
+
+        default:
+          break;
+        }
+
+      c = *(p++);
+    }
+ done_word:
+  --p;
+
+ done:
+  if (length)
+    *length = p - beg;
+
+  return beg;
+}
+
+/* This structure stores information about the expanded prerequisites for a
+   pattern rule.  NAME is always set to the strcache'd name of the prereq.
+   FILE and PATTERN will be set for intermediate files only.  IGNORE_MTIME is
+   copied from the prerequisite we expanded.
+ */
+struct patdeps
+  {
+    const char *name;
+    const char *pattern;
+    struct file *file;
+    unsigned int ignore_mtime : 1;
+  };
+
+/* This structure stores information about pattern rules that we need
+   to try.
+*/
+struct tryrule
+  {
+    struct rule *rule;
+
+    /* Index of the target in this rule that matched the file. */
+    unsigned int matches;
+
+    /* Stem length for this match. */
+    unsigned int stemlen;
+
+    /* Definition order of this rule. Used to implement stable sort.*/
+    unsigned int order;
+
+    /* Nonzero if the LASTSLASH logic was used in matching this rule. */
+    char checked_lastslash;
+  };
+
+int
+stemlen_compare (const void *v1, const void *v2)
+{
+  const struct tryrule *r1 = v1;
+  const struct tryrule *r2 = v2;
+  int r = r1->stemlen - r2->stemlen;
+  return r != 0 ? r : (int)(r1->order - r2->order);
+}
+
+/* Search the pattern rules for a rule with an existing dependency to make
+   FILE.  If a rule is found, the appropriate commands and deps are put in FILE
+   and 1 is returned.  If not, 0 is returned.
+
+   If ARCHIVE is nonzero, FILE->name is of the form "LIB(MEMBER)".  A rule for
+   "(MEMBER)" will be searched for, and "(MEMBER)" will not be chopped up into
+   directory and filename parts.
+
+   If an intermediate file is found by pattern search, the intermediate file
+   is set up as a target by the recursive call and is also made a dependency
+   of FILE.
+
+   DEPTH is used for debugging messages.  */
+
+static int
+pattern_search (struct file *file, int archive,
+                unsigned int depth, unsigned int recursions)
+{
+  /* Filename we are searching for a rule for.  */
+  const char *filename = archive ? strchr (file->name, '(') : file->name;
+
+  /* Length of FILENAME.  */
+  unsigned int namelen = strlen (filename);
+
+  /* The last slash in FILENAME (or nil if there is none).  */
+  const char *lastslash;
+
+  /* This is a file-object used as an argument in
+     recursive calls.  It never contains any data
+     except during a recursive call.  */
+  struct file *int_file = 0;
+
+  /* List of dependencies found recursively.  */
+  unsigned int max_deps = max_pattern_deps;
+  struct patdeps *deplist = xmalloc (max_deps * sizeof (struct patdeps));
+  struct patdeps *pat = deplist;
+
+  /* Names of possible dependencies are constructed in this buffer.  */
+  char *depname = alloca (namelen + max_pattern_dep_length);
+
+  /* The start and length of the stem of FILENAME for the current rule.  */
+  const char *stem = 0;
+  unsigned int stemlen = 0;
+  unsigned int fullstemlen = 0;
+
+  /* Buffer in which we store all the rules that are possibly applicable.  */
+  struct tryrule *tryrules = xmalloc (num_pattern_rules * max_pattern_targets
+                                      * sizeof (struct tryrule));
+
+  /* Number of valid elements in TRYRULES.  */
+  unsigned int nrules;
+
+  /* The index in TRYRULES of the rule we found.  */
+  unsigned int foundrule;
+
+  /* Nonzero if should consider intermediate files as dependencies.  */
+  int intermed_ok;
+
+  /* Nonzero if we have initialized file variables for this target.  */
+  int file_vars_initialized = 0;
+
+  /* Nonzero if we have matched a pattern-rule target
+     that is not just '%'.  */
+  int specific_rule_matched = 0;
+
+  unsigned int ri;  /* uninit checks OK */
+  struct rule *rule;
+
+  char *pathdir = NULL;
+  unsigned long pathlen;
+
+  PATH_VAR (stem_str); /* @@ Need to get rid of stem, stemlen, etc. */
+
+#ifndef NO_ARCHIVES
+  if (archive || ar_name (filename))
+    lastslash = 0;
+  else
+#endif
+    {
+      /* Set LASTSLASH to point at the last slash in FILENAME
+         but not counting any slash at the end.  (foo/bar/ counts as
+         bar/ in directory foo/, not empty in directory foo/bar/.)  */
+      lastslash = strrchr (filename, '/');
+#ifdef VMS
+      if (lastslash == NULL)
+        lastslash = strrchr (filename, ']');
+      if (lastslash == NULL)
+        lastslash = strrchr (filename, '>');
+      if (lastslash == NULL)
+        lastslash = strrchr (filename, ':');
+#endif
+#ifdef HAVE_DOS_PATHS
+      /* Handle backslashes (possibly mixed with forward slashes)
+         and the case of "d:file".  */
+      {
+        char *bslash = strrchr (filename, '\\');
+        if (lastslash == 0 || bslash > lastslash)
+          lastslash = bslash;
+        if (lastslash == 0 && filename[0] && filename[1] == ':')
+          lastslash = filename + 1;
+      }
+#endif
+      if (lastslash != 0 && lastslash[1] == '\0')
+        lastslash = 0;
+    }
+
+  pathlen = lastslash - filename + 1;
+
+  /* First see which pattern rules match this target and may be considered.
+     Put them in TRYRULES.  */
+
+  nrules = 0;
+  for (rule = pattern_rules; rule != 0; rule = rule->next)
+    {
+      unsigned int ti;
+
+      /* If the pattern rule has deps but no commands, ignore it.
+         Users cancel built-in rules by redefining them without commands.  */
+      if (rule->deps != 0 && rule->cmds == 0)
+        continue;
+
+      /* If this rule is in use by a parent pattern_search,
+         don't use it here.  */
+      if (rule->in_use)
+        {
+          DBS (DB_IMPLICIT, (_("Avoiding implicit rule recursion.\n")));
+          continue;
+        }
+
+      for (ti = 0; ti < rule->num; ++ti)
+        {
+          const char *target = rule->targets[ti];
+          const char *suffix = rule->suffixes[ti];
+          char check_lastslash;
+
+          /* Rules that can match any filename and are not terminal
+             are ignored if we're recursing, so that they cannot be
+             intermediate files.  */
+          if (recursions > 0 && target[1] == '\0' && !rule->terminal)
+            continue;
+
+          if (rule->lens[ti] > namelen)
+            /* It can't possibly match.  */
+            continue;
+
+          /* From the lengths of the filename and the pattern parts,
+             find the stem: the part of the filename that matches the %.  */
+          stem = filename + (suffix - target - 1);
+          stemlen = namelen - rule->lens[ti] + 1;
+
+          /* Set CHECK_LASTSLASH if FILENAME contains a directory
+             prefix and the target pattern does not contain a slash.  */
+
+          check_lastslash = 0;
+          if (lastslash)
+            {
+#ifdef VMS
+              check_lastslash = strpbrk (target, "/]>:") == NULL;
+#else
+              check_lastslash = strchr (target, '/') == 0;
+#endif
+#ifdef HAVE_DOS_PATHS
+              /* Didn't find it yet: check for DOS-type directories.  */
+              if (check_lastslash)
+                {
+                  char *b = strchr (target, '\\');
+                  check_lastslash = !(b || (target[0] && target[1] == ':'));
+                }
+#endif
+            }
+          if (check_lastslash)
+            {
+              /* If so, don't include the directory prefix in STEM here.  */
+              if (pathlen > stemlen)
+                continue;
+              stemlen -= pathlen;
+              stem += pathlen;
+            }
+
+          /* Check that the rule pattern matches the text before the stem.  */
+          if (check_lastslash)
+            {
+              if (stem > (lastslash + 1)
+                  && !strneq (target, lastslash + 1, stem - lastslash - 1))
+                continue;
+            }
+          else if (stem > filename
+                   && !strneq (target, filename, stem - filename))
+            continue;
+
+          /* Check that the rule pattern matches the text after the stem.
+             We could test simply use streq, but this way we compare the
+             first two characters immediately.  This saves time in the very
+             common case where the first character matches because it is a
+             period.  */
+          if (*suffix != stem[stemlen]
+              || (*suffix != '\0' && !streq (&suffix[1], &stem[stemlen + 1])))
+            continue;
+
+          /* Record if we match a rule that not all filenames will match.  */
+          if (target[1] != '\0')
+            specific_rule_matched = 1;
+
+          /* A rule with no dependencies and no commands exists solely to set
+             specific_rule_matched when it matches.  Don't try to use it.  */
+          if (rule->deps == 0 && rule->cmds == 0)
+            continue;
+
+          /* Record this rule in TRYRULES and the index of the matching
+             target in MATCHES.  If several targets of the same rule match,
+             that rule will be in TRYRULES more than once.  */
+          tryrules[nrules].rule = rule;
+          tryrules[nrules].matches = ti;
+          tryrules[nrules].stemlen = stemlen + (check_lastslash ? pathlen : 0);
+          tryrules[nrules].order = nrules;
+          tryrules[nrules].checked_lastslash = check_lastslash;
+          ++nrules;
+        }
+    }
+
+  /* Bail out early if we haven't found any rules. */
+  if (nrules == 0)
+    goto done;
+
+  /* Sort the rules to place matches with the shortest stem first. This
+     way the most specific rules will be tried first. */
+  if (nrules > 1)
+    qsort (tryrules, nrules, sizeof (struct tryrule), stemlen_compare);
+
+  /* If we have found a matching rule that won't match all filenames,
+     retroactively reject any non-"terminal" rules that do always match.  */
+  if (specific_rule_matched)
+    for (ri = 0; ri < nrules; ++ri)
+      if (!tryrules[ri].rule->terminal)
+        {
+          unsigned int j;
+          for (j = 0; j < tryrules[ri].rule->num; ++j)
+            if (tryrules[ri].rule->targets[j][1] == '\0')
+              {
+                tryrules[ri].rule = 0;
+                break;
+              }
+        }
+
+  /* Try each rule once without intermediate files, then once with them.  */
+  for (intermed_ok = 0; intermed_ok < 2; ++intermed_ok)
+    {
+      pat = deplist;
+
+      /* Try each pattern rule till we find one that applies.  If it does,
+         expand its dependencies (as substituted) and chain them in DEPS.  */
+      for (ri = 0; ri < nrules; ri++)
+        {
+          struct dep *dep;
+          char check_lastslash;
+          unsigned int failed = 0;
+          int file_variables_set = 0;
+          unsigned int deps_found = 0;
+          /* NPTR points to the part of the prereq we haven't processed.  */
+          const char *nptr = 0;
+          const char *dir = NULL;
+          int order_only = 0;
+          unsigned int matches;
+
+          rule = tryrules[ri].rule;
+
+          /* RULE is nil when we discover that a rule, already placed in
+             TRYRULES, should not be applied.  */
+          if (rule == 0)
+            continue;
+
+          /* Reject any terminal rules if we're looking to make intermediate
+             files.  */
+          if (intermed_ok && rule->terminal)
+            continue;
+
+          /* From the lengths of the filename and the matching pattern parts,
+             find the stem: the part of the filename that matches the %.  */
+          matches = tryrules[ri].matches;
+          stem = filename + (rule->suffixes[matches]
+                             - rule->targets[matches]) - 1;
+          stemlen = (namelen - rule->lens[matches]) + 1;
+          check_lastslash = tryrules[ri].checked_lastslash;
+          if (check_lastslash)
+            {
+              stem += pathlen;
+              stemlen -= pathlen;
+
+              /* We need to add the directory prefix, so set it up.  */
+              if (! pathdir)
+                {
+                  pathdir = alloca (pathlen + 1);
+                  memcpy (pathdir, filename, pathlen);
+                  pathdir[pathlen] = '\0';
+                }
+              dir = pathdir;
+            }
+
+          if (stemlen > GET_PATH_MAX)
+            {
+              DBS (DB_IMPLICIT, (_("Stem too long: '%.*s'.\n"),
+                                 (int) stemlen, stem));
+              continue;
+            }
+
+          DBS (DB_IMPLICIT, (_("Trying pattern rule with stem '%.*s'.\n"),
+                             (int) stemlen, stem));
+
+          strncpy (stem_str, stem, stemlen);
+          stem_str[stemlen] = '\0';
+
+          /* If there are no prerequisites, then this rule matches.  */
+          if (rule->deps == 0)
+            break;
+
+          /* Temporary assign STEM to file->stem (needed to set file
+             variables below).   */
+          file->stem = stem_str;
+
+          /* Mark this rule as in use so a recursive pattern_search won't try
+             to use it.  */
+          rule->in_use = 1;
+
+          /* Try each prerequisite; see if it exists or can be created.  We'll
+             build a list of prereq info in DEPLIST.  Due to 2nd expansion we
+             may have to process multiple prereqs for a single dep entry.  */
+
+          pat = deplist;
+          dep = rule->deps;
+          nptr = dep_name (dep);
+          while (1)
+            {
+              struct dep *dl, *d;
+              char *p;
+
+              /* If we're out of name to parse, start the next prereq.  */
+              if (! nptr)
+                {
+                  dep = dep->next;
+                  if (dep == 0)
+                    break;
+                  nptr = dep_name (dep);
+                }
+
+              /* If we don't need a second expansion, just replace the %.  */
+              if (! dep->need_2nd_expansion)
+                {
+                  p = strchr (nptr, '%');
+                  if (p == 0)
+                    strcpy (depname, nptr);
+                  else
+                    {
+                      char *o = depname;
+                      if (check_lastslash)
+                        {
+                          memcpy (o, filename, pathlen);
+                          o += pathlen;
+                        }
+                      memcpy (o, nptr, p - nptr);
+                      o += p - nptr;
+                      memcpy (o, stem_str, stemlen);
+                      o += stemlen;
+                      strcpy (o, p + 1);
+                    }
+
+                  /* Parse the expanded string.  It might have wildcards.  */
+                  p = depname;
+                  dl = PARSE_SIMPLE_SEQ (&p, struct dep);
+                  for (d = dl; d != NULL; d = d->next)
+                    {
+                      ++deps_found;
+                      d->ignore_mtime = dep->ignore_mtime;
+                    }
+
+                  /* We've used up this dep, so next time get a new one.  */
+                  nptr = 0;
+                }
+
+              /* We have to perform second expansion on this prereq.  In an
+                 ideal world we would take the dependency line, substitute the
+                 stem, re-expand the whole line and chop it into individual
+                 prerequisites.  Unfortunately this won't work because of the
+                 "check_lastslash" twist.  Instead, we will have to go word by
+                 word, taking $()'s into account.  For each word we will
+                 substitute the stem, re-expand, chop it up, and, if
+                 check_lastslash != 0, add the directory part to each
+                 resulting prerequisite.  */
+              else
+                {
+                  int add_dir = 0;
+                  unsigned int len;
+                  struct dep **dptr;
+
+                  nptr = get_next_word (nptr, &len);
+                  if (nptr == 0)
+                    continue;
+
+                  /* See this is a transition to order-only prereqs.  */
+                  if (! order_only && len == 1 && nptr[0] == '|')
+                    {
+                      order_only = 1;
+                      nptr += len;
+                      continue;
+                    }
+
+                  /* If the dependency name has %, substitute the stem.  If we
+                     just replace % with the stem value then later, when we do
+                     the 2nd expansion, we will re-expand this stem value
+                     again.  This is not good if you have certain characters
+                     in your stem (like $).
+
+                     Instead, we will replace % with $* and allow the second
+                     expansion to take care of it for us.  This way (since $*
+                     is a simple variable) there won't be additional
+                     re-expansion of the stem.  */
+
+                  p = lindex (nptr, nptr + len, '%');
+                  if (p == 0)
+                    {
+                      memcpy (depname, nptr, len);
+                      depname[len] = '\0';
+                    }
+                  else
+                    {
+                      unsigned int i = p - nptr;
+                      memcpy (depname, nptr, i);
+                      memcpy (depname + i, "$*", 2);
+                      memcpy (depname + i + 2, p + 1, len - i - 1);
+                      depname[len + 2 - 1] = '\0';
+
+                      if (check_lastslash)
+                        add_dir = 1;
+                    }
+
+                  /* Set up for the next word.  */
+                  nptr += len;
+
+                  /* Initialize and set file variables if we haven't already
+                     done so. */
+                  if (!file_vars_initialized)
+                    {
+                      initialize_file_variables (file, 0);
+#if defined(CONFIG_WITH_COMMANDS_FUNC) || defined (CONFIG_WITH_DOT_MUST_MAKE)
+                      set_file_variables (file, 0 /* real call */);
+#else
+                      set_file_variables (file);
+#endif
+                      file_vars_initialized = 1;
+                    }
+                  /* Update the stem value in $* for this rule.  */
+                  else if (!file_variables_set)
+                    {
+                      define_variable_for_file (
+                        "*", 1, file->stem, o_automatic, 0, file);
+                      file_variables_set = 1;
+                    }
+
+                  /* Perform the 2nd expansion.  */
+                  p = variable_expand_for_file (depname, file);
+                  dptr = &dl;
+
+                  /* Parse the results into a deps list.  */
+                  do
+                    {
+                      /* Parse the expanded string. */
+                      struct dep *dp = PARSE_FILE_SEQ (&p, struct dep,
+                                                       order_only ? MAP_NUL : MAP_PIPE,
+                                                       add_dir ? dir : NULL, PARSEFS_NONE);
+                      *dptr = dp;
+
+                      for (d = dp; d != NULL; d = d->next)
+                        {
+                          ++deps_found;
+                          if (order_only)
+                            d->ignore_mtime = 1;
+                          dptr = &d->next;
+                        }
+
+                      /* If we stopped due to an order-only token, note it.  */
+                      if (*p == '|')
+                        {
+                          order_only = 1;
+                          ++p;
+                        }
+                    }
+                  while (*p != '\0');
+                }
+
+              /* If there are more than max_pattern_deps prerequisites (due to
+                 2nd expansion), reset it and realloc the arrays.  */
+
+              if (deps_found > max_deps)
+                {
+                  unsigned int l = pat - deplist;
+                  /* This might have changed due to recursion.  */
+                  max_pattern_deps = MAX(max_pattern_deps, deps_found);
+                  max_deps = max_pattern_deps;
+                  deplist = xrealloc (deplist,
+                                      max_deps * sizeof (struct patdeps));
+                  pat = deplist + l;
+                }
+
+              /* Go through the nameseq and handle each as a prereq name.  */
+              for (d = dl; d != 0; d = d->next)
+                {
+                  struct dep *expl_d;
+                  int is_rule = d->name == dep_name (dep);
+
+                  if (file_impossible_p (d->name))
+                    {
+                      /* If this prereq has already been ruled "impossible",
+                         then the rule fails.  Don't bother trying it on the
+                         second pass either since we know that will fail.  */
+                      DBS (DB_IMPLICIT,
+                           (is_rule
+                            ? _("Rejecting impossible rule prerequisite '%s'.\n")
+                            : _("Rejecting impossible implicit prerequisite '%s'.\n"),
+                            d->name));
+                      tryrules[ri].rule = 0;
+
+                      failed = 1;
+                      break;
+                    }
+
+                  memset (pat, '\0', sizeof (struct patdeps));
+                  pat->ignore_mtime = d->ignore_mtime;
+
+                  DBS (DB_IMPLICIT,
+                       (is_rule
+                        ? _("Trying rule prerequisite '%s'.\n")
+                        : _("Trying implicit prerequisite '%s'.\n"), d->name));
+
+                  /* If this prereq is also explicitly mentioned for FILE,
+                     skip all tests below since it must be built no matter
+                     which implicit rule we choose. */
+
+                  for (expl_d = file->deps; expl_d != 0; expl_d = expl_d->next)
+                    if (streq (dep_name (expl_d), d->name))
+                      break;
+                  if (expl_d != 0)
+                    {
+                      (pat++)->name = d->name;
+                      continue;
+                    }
+
+                  /* The DEP->changed flag says that this dependency resides
+                     in a nonexistent directory.  So we normally can skip
+                     looking for the file.  However, if CHECK_LASTSLASH is
+                     set, then the dependency file we are actually looking for
+                     is in a different directory (the one gotten by prepending
+                     FILENAME's directory), so it might actually exist.  */
+
+                  /* @@ dep->changed check is disabled. */
+                  if (lookup_file (d->name) != 0
+                      /*|| ((!dep->changed || check_lastslash) && */
+                      || file_exists_p (d->name))
+                    {
+                      (pat++)->name = d->name;
+                      continue;
+                    }
+
+                  /* This code, given FILENAME = "lib/foo.o", dependency name
+                     "lib/foo.c", and VPATH=src, searches for
+                     "src/lib/foo.c".  */
+                  {
+                    const char *vname = vpath_search (d->name, 0, NULL, NULL);
+                    if (vname)
+                      {
+                        DBS (DB_IMPLICIT,
+                             (_("Found prerequisite '%s' as VPATH '%s'\n"),
+                              d->name, vname));
+                        (pat++)->name = d->name;
+                        continue;
+                      }
+                  }
+
+                  /* We could not find the file in any place we should look.
+                     Try to make this dependency as an intermediate file, but
+                     only on the second pass.  */
+
+                  if (intermed_ok)
+                    {
+                      DBS (DB_IMPLICIT,
+                           (_("Looking for a rule with intermediate file '%s'.\n"),
+                            d->name));
+
+                      if (int_file == 0)
+                        int_file = alloca (sizeof (struct file));
+                      memset (int_file, '\0', sizeof (struct file));
+                      int_file->name = d->name;
+
+                      if (pattern_search (int_file,
+                                          0,
+                                          depth + 1,
+                                          recursions + 1))
+                        {
+                          pat->pattern = int_file->name;
+                          int_file->name = d->name;
+                          pat->file = int_file;
+                          int_file = 0;
+                          (pat++)->name = d->name;
+                          continue;
+                        }
+
+                      /* If we have tried to find P as an intermediate file
+                         and failed, mark that name as impossible so we won't
+                         go through the search again later.  */
+                      if (int_file->variables)
+                        free_variable_set (int_file->variables);
+                      if (int_file->pat_variables)
+                        free_variable_set (int_file->pat_variables);
+                      file_impossible (d->name);
+                    }
+
+                  /* A dependency of this rule does not exist. Therefore, this
+                     rule fails.  */
+                  failed = 1;
+                  break;
+                }
+
+              /* Free the ns chain.  */
+              free_dep_chain (dl);
+
+              if (failed)
+                break;
+            }
+
+          /* Reset the stem in FILE. */
+
+          file->stem = 0;
+
+          /* This rule is no longer 'in use' for recursive searches.  */
+          rule->in_use = 0;
+
+          if (! failed)
+            /* This pattern rule does apply.  Stop looking for one.  */
+            break;
+
+          /* This pattern rule does not apply.  Keep looking.  */
+        }
+
+      /* If we found an applicable rule without intermediate files, don't try
+         with them.  */
+      if (ri < nrules)
+        break;
+
+      rule = 0;
+    }
+
+  /* RULE is nil if the loop went through the list but everything failed.  */
+  if (rule == 0)
+    goto done;
+
+  foundrule = ri;
+
+  /* If we are recursing, store the pattern that matched FILENAME in
+     FILE->name for use in upper levels.  */
+
+  if (recursions > 0)
+    /* Kludge-o-matic */
+    file->name = rule->targets[tryrules[foundrule].matches];
+
+  /* DEPLIST lists the prerequisites for the rule we found.  This includes the
+     intermediate files, if any.  Convert them into entries on the deps-chain
+     of FILE.  */
+
+  while (pat-- > deplist)
+    {
+      struct dep *dep;
+      const char *s;
+
+      if (pat->file != 0)
+        {
+          /* If we need to use an intermediate file, make sure it is entered
+             as a target, with the info that was found for it in the recursive
+             pattern_search call.  We know that the intermediate file did not
+             already exist as a target; therefore we can assume that the deps
+             and cmds of F below are null before we change them.  */
+
+          struct file *imf = pat->file;
+          struct file *f = lookup_file (imf->name);
+
+          /* We don't want to delete an intermediate file that happened
+             to be a prerequisite of some (other) target. Mark it as
+             secondary.  We don't want it to be precious as that disables
+             DELETE_ON_ERROR etc.  */
+          if (f != 0)
+            f->secondary = 1;
+          else
+            f = enter_file (imf->name);
+
+          f->deps = imf->deps;
+          f->cmds = imf->cmds;
+          f->stem = imf->stem;
+          f->variables = imf->variables;
+          f->pat_variables = imf->pat_variables;
+          f->pat_searched = imf->pat_searched;
+          f->also_make = imf->also_make;
+          f->is_target = 1;
+          f->intermediate = 1;
+          f->tried_implicit = 1;
+
+          imf = lookup_file (pat->pattern);
+          if (imf != 0 && imf->precious)
+            f->precious = 1;
+
+          for (dep = f->deps; dep != 0; dep = dep->next)
+            {
+              dep->file = enter_file (dep->name);
+              dep->name = 0;
+              dep->file->tried_implicit |= dep->changed;
+            }
+        }
+
+      dep = alloc_dep ();
+      dep->ignore_mtime = pat->ignore_mtime;
+      s = strcache_add (pat->name);
+      if (recursions)
+        dep->name = s;
+      else
+        {
+          dep->file = lookup_file (s);
+          if (dep->file == 0)
+            dep->file = enter_file (s);
+        }
+
+      if (pat->file == 0 && tryrules[foundrule].rule->terminal)
+        {
+          /* If the file actually existed (was not an intermediate file), and
+             the rule that found it was a terminal one, then we want to mark
+             the found file so that it will not have implicit rule search done
+             for it.  If we are not entering a 'struct file' for it now, we
+             indicate this with the 'changed' flag.  */
+          if (dep->file == 0)
+            dep->changed = 1;
+          else
+            dep->file->tried_implicit = 1;
+        }
+
+      dep->next = file->deps;
+      file->deps = dep;
+    }
+
+  if (!tryrules[foundrule].checked_lastslash)
+    {
+      /* Always allocate new storage, since STEM might be on the stack for an
+         intermediate file.  */
+      file->stem = strcache_add_len (stem, stemlen);
+      fullstemlen = stemlen;
+    }
+  else
+    {
+      int dirlen = (lastslash + 1) - filename;
+      char *sp;
+
+      /* We want to prepend the directory from
+         the original FILENAME onto the stem.  */
+      fullstemlen = dirlen + stemlen;
+      sp = alloca (fullstemlen + 1);
+      memcpy (sp, filename, dirlen);
+      memcpy (sp + dirlen, stem, stemlen);
+      sp[fullstemlen] = '\0';
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      file->stem = strcache_add (sp);
+#else
+      file->stem = strcache_add_len (sp, fullstemlen);
+#endif
+    }
+
+  file->cmds = rule->cmds;
+  file->is_target = 1;
+
+  /* Set precious flag. */
+  {
+    struct file *f = lookup_file (rule->targets[tryrules[foundrule].matches]);
+    if (f && f->precious)
+      file->precious = 1;
+  }
+
+  /* If this rule builds other targets, too, put the others into FILE's
+     'also_make' member.  */
+
+  if (rule->num > 1)
+    for (ri = 0; ri < rule->num; ++ri)
+      if (ri != tryrules[foundrule].matches)
+        {
+          char *nm = alloca (rule->lens[ri] + fullstemlen + 1);
+          char *p = nm;
+          struct file *f;
+          struct dep *new = alloc_dep ();
+
+          /* GKM FIMXE: handle '|' here too */
+          memcpy (p, rule->targets[ri],
+                  rule->suffixes[ri] - rule->targets[ri] - 1);
+          p += rule->suffixes[ri] - rule->targets[ri] - 1;
+          memcpy (p, file->stem, fullstemlen);
+          p += fullstemlen;
+          memcpy (p, rule->suffixes[ri],
+                  rule->lens[ri] - (rule->suffixes[ri] - rule->targets[ri])+1);
+          new->name = strcache_add (nm);
+          new->file = enter_file (new->name);
+          new->next = file->also_make;
+
+          /* Set precious flag. */
+          f = lookup_file (rule->targets[ri]);
+          if (f && f->precious)
+            new->file->precious = 1;
+
+          /* Set the is_target flag so that this file is not treated as
+             intermediate by the pattern rule search algorithm and
+             file_exists_p cannot pick it up yet.  */
+          new->file->is_target = 1;
+
+          file->also_make = new;
+        }
+
+ done:
+  free (tryrules);
+  free (deplist);
+
+  return rule != 0;
+}
diff --git a/src/kmk/incdep.c b/src/kmk/incdep.c
new file mode 100644
index 0000000..09de6ff
--- /dev/null
+++ b/src/kmk/incdep.c
@@ -0,0 +1,2250 @@
+#ifdef CONFIG_WITH_INCLUDEDEP
+/* $Id: incdep.c 3565 2022-05-24 20:40:24Z bird $ */
+/** @file
+ * incdep - Simple dependency files.
+ */
+
+/*
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#ifdef __OS2__
+# define INCL_BASE
+# define INCL_ERRORS
+#endif
+#ifdef KBUILD_OS_WINDOWS
+# ifdef KMK
+#  define INCDEP_USE_KFSCACHE
+# endif
+#endif
+
+#include "makeint.h"
+
+#if !defined(WINDOWS32) && !defined(__OS2__)
+# define HAVE_PTHREAD
+#endif
+
+#include <assert.h>
+
+#include <glob.h>
+
+#include "filedef.h"
+#include "dep.h"
+#include "job.h"
+#include "commands.h"
+#include "variable.h"
+#include "rule.h"
+#include "debug.h"
+#include "strcache2.h"
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#else
+# include <sys/file.h>
+#endif
+
+#ifdef WINDOWS32
+# include <io.h>
+# include <process.h>
+# include <Windows.h>
+# define PARSE_IN_WORKER
+#endif
+
+#ifdef INCDEP_USE_KFSCACHE
+# include "nt/kFsCache.h"
+extern PKFSCACHE g_pFsCache; /* dir-nt-bird.c for now */
+#endif
+
+#ifdef __OS2__
+# include <os2.h>
+# include <sys/fmutex.h>
+#endif
+
+#ifdef HAVE_PTHREAD
+# include <pthread.h>
+#endif
+
+#ifdef __APPLE__
+# include <malloc/malloc.h>
+# define PARSE_IN_WORKER
+#endif
+
+#if defined(__gnu_linux__) || defined(__linux__)
+# define PARSE_IN_WORKER
+#endif
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+struct incdep_variable_in_set
+{
+    struct incdep_variable_in_set *next;
+    /* the parameters */
+    struct strcache2_entry *name_entry;     /* dep strcache - WRONG */
+    const char *value;                      /* xmalloc'ed */
+    unsigned int value_length;
+    int duplicate_value;                    /* 0 */
+    enum variable_origin origin;
+    int recursive;
+    struct variable_set *set;
+    const floc *flocp;                      /* NILF */
+};
+
+struct incdep_variable_def
+{
+    struct incdep_variable_def *next;
+    /* the parameters */
+    const floc *flocp;                      /* NILF */
+    struct strcache2_entry *name_entry;     /* dep strcache - WRONG */
+    char *value;                            /* xmalloc'ed, free it */
+    unsigned int value_length;
+    enum variable_origin origin;
+    enum variable_flavor flavor;
+    int target_var;
+};
+
+struct incdep_recorded_file
+{
+    struct incdep_recorded_file *next;
+
+    /* the parameters */
+    struct strcache2_entry *filename_entry; /* dep strcache; converted to a nameseq record. */
+    struct dep *deps;                       /* All the names are dep strcache entries. */
+    const floc *flocp;                     /* NILF */
+};
+
+
+/* per dep file structure. */
+struct incdep
+{
+  struct incdep *next;
+  char *file_base;
+  char *file_end;
+
+  int worker_tid;
+#ifdef PARSE_IN_WORKER
+  unsigned int err_line_no;
+  const char *err_msg;
+
+  struct incdep_variable_in_set *recorded_variables_in_set_head;
+  struct incdep_variable_in_set *recorded_variables_in_set_tail;
+
+  struct incdep_variable_def *recorded_variable_defs_head;
+  struct incdep_variable_def *recorded_variable_defs_tail;
+
+  struct incdep_recorded_file *recorded_file_head;
+  struct incdep_recorded_file *recorded_file_tail;
+#endif
+#ifdef INCDEP_USE_KFSCACHE
+  /** Pointer to the fs cache object for this file (it exists and is a file). */
+  PKFSOBJ pFileObj;
+#else
+  char name[1];
+#endif
+};
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+
+/* mutex protecting the globals and an associated condition/event. */
+#ifdef HAVE_PTHREAD
+static pthread_mutex_t incdep_mtx;
+static pthread_cond_t  incdep_cond_todo;
+static pthread_cond_t  incdep_cond_done;
+
+#elif defined (WINDOWS32)
+static CRITICAL_SECTION incdep_mtx;
+static HANDLE incdep_hev_todo;
+static HANDLE incdep_hev_done;
+static int volatile incdep_hev_todo_waiters;
+static int volatile incdep_hev_done_waiters;
+
+#elif defined (__OS2__)
+static _fmutex incdep_mtx;
+static HEV incdep_hev_todo;
+static HEV incdep_hev_done;
+static int volatile incdep_hev_todo_waiters;
+static int volatile incdep_hev_done_waiters;
+#endif
+
+/* flag indicating whether the threads, lock and event/condvars has
+   been initialized or not. */
+static int incdep_initialized;
+
+/* the list of files that needs reading. */
+static struct incdep * volatile incdep_head_todo;
+static struct incdep * volatile incdep_tail_todo;
+
+/* the number of files that are currently being read. */
+static int volatile incdep_num_reading;
+
+/* the list of files that have been read. */
+static struct incdep * volatile incdep_head_done;
+static struct incdep * volatile incdep_tail_done;
+
+
+/* The handles to the worker threads. */
+#ifdef HAVE_PTHREAD
+# define INCDEP_MAX_THREADS 1
+static pthread_t incdep_threads[INCDEP_MAX_THREADS];
+
+#elif defined (WINDOWS32)
+# define INCDEP_MAX_THREADS 2
+static HANDLE incdep_threads[INCDEP_MAX_THREADS];
+
+#elif defined (__OS2__)
+# define INCDEP_MAX_THREADS 2
+static TID incdep_threads[INCDEP_MAX_THREADS];
+#endif
+
+static struct alloccache incdep_rec_caches[INCDEP_MAX_THREADS];
+static struct alloccache incdep_dep_caches[INCDEP_MAX_THREADS];
+static struct strcache2 incdep_dep_strcaches[INCDEP_MAX_THREADS];
+static struct strcache2 incdep_var_strcaches[INCDEP_MAX_THREADS];
+static unsigned incdep_num_threads;
+
+/* flag indicating whether the worker threads should terminate or not. */
+static int volatile incdep_terminate;
+
+#ifdef __APPLE__
+/* malloc zone for the incdep threads. */
+static malloc_zone_t *incdep_zone;
+#endif
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static void incdep_flush_it (floc *);
+static void eval_include_dep_file (struct incdep *, floc *);
+static void incdep_commit_recorded_file (const char *filename, struct dep *deps,
+                                         const floc *flocp);
+
+
+/* xmalloc wrapper.
+   For working around multithreaded performance problems found on Darwin,
+   Linux (glibc), and possibly other systems. */
+static void *
+incdep_xmalloc (struct incdep *cur, size_t size)
+{
+  void *ptr;
+
+#ifdef __APPLE__
+  if (cur && cur->worker_tid != -1)
+    {
+      ptr = malloc_zone_malloc (incdep_zone, size);
+      if (!ptr)
+        O (fatal, NILF, _("virtual memory exhausted"));
+    }
+  else
+    ptr = xmalloc (size);
+#else
+  ptr = xmalloc (size);
+#endif
+
+  (void)cur;
+  return ptr;
+}
+
+#if 0
+/* cmalloc wrapper */
+static void *
+incdep_xcalloc (struct incdep *cur, size_t size)
+{
+  void *ptr;
+
+#ifdef __APPLE__
+  if (cur && cur->worker_tid != -1)
+    ptr = malloc_zone_calloc (incdep_zone, size, 1);
+  else
+    ptr = calloc (size, 1);
+#else
+  ptr = calloc (size, 1);
+#endif
+  if (!ptr)
+    fatal (NILF, _("virtual memory exhausted"));
+
+  (void)cur;
+  return ptr;
+}
+#endif /* unused */
+
+/* free wrapper */
+static void
+incdep_xfree (struct incdep *cur, void *ptr)
+{
+  /* free() *must* work for the allocation hacks above because
+     of free_dep_chain. */
+  free (ptr);
+  (void)cur;
+}
+
+/* alloc a dep structure. These are allocated in bunches to save time. */
+struct dep *
+incdep_alloc_dep (struct incdep *cur)
+{
+  struct alloccache *cache;
+  if (cur->worker_tid != -1)
+    cache = &incdep_dep_caches[cur->worker_tid];
+  else
+    cache = &dep_cache;
+  return alloccache_calloc (cache);
+}
+
+/* duplicates the dependency list pointed to by srcdep. */
+static struct dep *
+incdep_dup_dep_list (struct incdep *cur, struct dep const *srcdep)
+{
+  struct alloccache *cache;
+  struct dep *retdep;
+  struct dep *dstdep;
+
+  if (cur->worker_tid != -1)
+    cache = &incdep_dep_caches[cur->worker_tid];
+  else
+    cache = &dep_cache;
+
+  if (srcdep)
+    {
+      retdep = dstdep = alloccache_alloc (cache);
+      for (;;)
+        {
+          dstdep->name = srcdep->name; /* string cached */
+          dstdep->includedep = srcdep->includedep;
+          srcdep = srcdep->next;
+          if (!srcdep)
+            {
+              dstdep->next = NULL;
+              break;
+            }
+          dstdep->next = alloccache_alloc (cache);
+          dstdep = dstdep->next;
+        }
+    }
+  else
+    retdep = NULL;
+  return retdep;
+}
+
+
+/* allocate a record. */
+static void *
+incdep_alloc_rec (struct incdep *cur)
+{
+  return alloccache_alloc (&incdep_rec_caches[cur->worker_tid]);
+}
+
+/* free a record. */
+static void
+incdep_free_rec (struct incdep *cur, void *rec)
+{
+  /*alloccache_free (&incdep_rec_caches[cur->worker_tid], rec); - doesn't work of course. */
+}
+
+
+/* grow a cache. */
+static void *
+incdep_cache_allocator (void *thrd, unsigned int size)
+{
+  (void)thrd;
+#ifdef __APPLE__
+  return malloc_zone_malloc (incdep_zone, size);
+#else
+  return xmalloc (size);
+#endif
+}
+
+/* term a cache. */
+static void
+incdep_cache_deallocator (void *thrd, void *ptr, unsigned int size)
+{
+  (void)thrd;
+  (void)size;
+  free (ptr);
+}
+
+/* acquires the lock */
+void
+incdep_lock(void)
+{
+#if defined (HAVE_PTHREAD) && !defined (CONFIG_WITHOUT_THREADS)
+  pthread_mutex_lock (&incdep_mtx);
+#elif defined (WINDOWS32)
+  EnterCriticalSection (&incdep_mtx);
+#elif defined (__OS2__)
+  _fmutex_request (&incdep_mtx, 0);
+#endif
+}
+
+/* releases the lock */
+void
+incdep_unlock(void)
+{
+#if defined (HAVE_PTHREAD) && !defined (CONFIG_WITHOUT_THREADS)
+  pthread_mutex_unlock (&incdep_mtx);
+#elif defined(WINDOWS32)
+  LeaveCriticalSection (&incdep_mtx);
+#elif defined(__OS2__)
+  _fmutex_release (&incdep_mtx);
+#endif
+}
+
+/* signals the main thread that there is stuff todo. caller owns the lock. */
+static void
+incdep_signal_done (void)
+{
+#if defined (HAVE_PTHREAD) && !defined (CONFIG_WITHOUT_THREADS)
+  pthread_cond_broadcast (&incdep_cond_done);
+#elif defined (WINDOWS32)
+  if (incdep_hev_done_waiters)
+    SetEvent (incdep_hev_done);
+#elif defined (__OS2__)
+  if (incdep_hev_done_waiters)
+    DosPostEventSem (incdep_hev_done);
+#endif
+}
+
+/* waits for a reader to finish reading. caller owns the lock. */
+static void
+incdep_wait_done (void)
+{
+#if defined (HAVE_PTHREAD) && !defined (CONFIG_WITHOUT_THREADS)
+  pthread_cond_wait (&incdep_cond_done, &incdep_mtx);
+
+#elif defined (WINDOWS32)
+  ResetEvent (incdep_hev_done);
+  incdep_hev_done_waiters++;
+  incdep_unlock ();
+  WaitForSingleObject (incdep_hev_done, INFINITE);
+  incdep_lock ();
+  incdep_hev_done_waiters--;
+
+#elif defined (__OS2__)
+  ULONG ulIgnore;
+  DosResetEventSem (incdep_hev_done, &ulIgnore);
+  incdep_hev_done_waiters++;
+  incdep_unlock ();
+  DosWaitEventSem (incdep_hev_done, SEM_INDEFINITE_WAIT);
+  incdep_lock ();
+  incdep_hev_done_waiters--;
+#endif
+}
+
+/* signals the worker threads. caller owns the lock. */
+static void
+incdep_signal_todo (void)
+{
+#if defined (HAVE_PTHREAD) && !defined (CONFIG_WITHOUT_THREADS)
+  pthread_cond_broadcast (&incdep_cond_todo);
+#elif defined(WINDOWS32)
+  if (incdep_hev_todo_waiters)
+    SetEvent (incdep_hev_todo);
+#elif defined(__OS2__)
+  if (incdep_hev_todo_waiters)
+    DosPostEventSem (incdep_hev_todo);
+#endif
+}
+
+/* waits for stuff to arrive in the todo list. caller owns the lock. */
+static void
+incdep_wait_todo (void)
+{
+#if defined (HAVE_PTHREAD) && !defined (CONFIG_WITHOUT_THREADS)
+  pthread_cond_wait (&incdep_cond_todo, &incdep_mtx);
+
+#elif defined (WINDOWS32)
+  ResetEvent (incdep_hev_todo);
+  incdep_hev_todo_waiters++;
+  incdep_unlock ();
+  WaitForSingleObject (incdep_hev_todo, INFINITE);
+  incdep_lock ();
+  incdep_hev_todo_waiters--;
+
+#elif defined (__OS2__)
+  ULONG ulIgnore;
+  DosResetEventSem (incdep_hev_todo, &ulIgnore);
+  incdep_hev_todo_waiters++;
+  incdep_unlock ();
+  DosWaitEventSem (incdep_hev_todo, SEM_INDEFINITE_WAIT);
+  incdep_lock ();
+  incdep_hev_todo_waiters--;
+#endif
+}
+
+/* Reads a dep file into memory. */
+static int
+incdep_read_file (struct incdep *cur, floc *f)
+{
+#ifdef INCDEP_USE_KFSCACHE
+  size_t const cbFile = (size_t)cur->pFileObj->Stats.st_size;
+
+  assert(cur->pFileObj->fHaveStats);
+  cur->file_base = incdep_xmalloc (cur, cbFile + 1);
+  if (cur->file_base)
+    {
+      if (kFsCacheFileSimpleOpenReadClose (g_pFsCache, cur->pFileObj, 0, cur->file_base, cbFile))
+        {
+          cur->file_end = cur->file_base + cbFile;
+          cur->file_base[cbFile] = '\0';
+          return 0;
+        }
+      incdep_xfree (cur, cur->file_base);
+    }
+  OSS (error, f, "%s/%s: error reading file", cur->pFileObj->pParent->Obj.pszName, cur->pFileObj->pszName);
+
+#else /* !INCDEP_USE_KFSCACHE */
+  int fd;
+  struct stat st;
+
+  errno = 0;
+# ifdef O_BINARY
+  fd = open (cur->name, O_RDONLY | O_BINARY, 0);
+# else
+  fd = open (cur->name, O_RDONLY, 0);
+# endif
+  if (fd < 0)
+    {
+      /* ignore non-existing dependency files. */
+      int err = errno;
+      if (err == ENOENT || stat (cur->name, &st) != 0)
+        return 1;
+      OSS (error, f, "%s: %s", cur->name, strerror (err));
+      return -1;
+    }
+# ifdef KBUILD_OS_WINDOWS /* fewer kernel calls */
+  if (!birdStatOnFdJustSize (fd, &st.st_size))
+# else
+  if (!fstat (fd, &st))
+# endif
+    {
+      cur->file_base = incdep_xmalloc (cur, st.st_size + 1);
+      if (read (fd, cur->file_base, st.st_size) == st.st_size)
+        {
+          close (fd);
+          cur->file_end = cur->file_base + st.st_size;
+          cur->file_base[st.st_size] = '\0';
+          return 0;
+        }
+
+      /* bail out */
+
+      OSS (error, f, "%s: read: %s", cur->name, strerror (errno));
+      incdep_xfree (cur, cur->file_base);
+    }
+  else
+    OSS (error, f, "%s: fstat: %s", cur->name, strerror (errno));
+
+  close (fd);
+#endif /* !INCDEP_USE_KFSCACHE */
+  cur->file_base = cur->file_end = NULL;
+  return -1;
+}
+
+/* Free the incdep structure. */
+static void
+incdep_freeit (struct incdep *cur)
+{
+#ifdef PARSE_IN_WORKER
+  assert (!cur->recorded_variables_in_set_head);
+  assert (!cur->recorded_variable_defs_head);
+  assert (!cur->recorded_file_head);
+#endif
+
+  incdep_xfree (cur, cur->file_base);
+#ifdef INCDEP_USE_KFSCACHE
+  /** @todo release object ref some day... */
+#endif
+  cur->next = NULL;
+  free (cur);
+}
+
+/* A worker thread. */
+void
+incdep_worker (int thrd)
+{
+  incdep_lock ();
+
+  while (!incdep_terminate)
+   {
+      /* get job from the todo list. */
+
+      struct incdep *cur = incdep_head_todo;
+      if (!cur)
+        {
+          incdep_wait_todo ();
+          continue;
+        }
+      if (cur->next)
+        incdep_head_todo = cur->next;
+      else
+        incdep_head_todo = incdep_tail_todo = NULL;
+      incdep_num_reading++;
+
+      /* read the file. */
+
+      incdep_unlock ();
+      cur->worker_tid = thrd;
+
+      incdep_read_file (cur, NILF);
+#ifdef PARSE_IN_WORKER
+      eval_include_dep_file (cur, NILF);
+#endif
+
+      cur->worker_tid = -1;
+      incdep_lock ();
+
+      /* insert finished job into the done list. */
+
+      incdep_num_reading--;
+      cur->next = NULL;
+      if (incdep_tail_done)
+        incdep_tail_done->next = cur;
+      else
+        incdep_head_done = cur;
+      incdep_tail_done = cur;
+
+      incdep_signal_done ();
+   }
+
+  incdep_unlock ();
+}
+
+/* Thread library specific thread functions wrapping incdep_wroker. */
+#ifdef HAVE_PTHREAD
+static void *
+incdep_worker_pthread (void *thrd)
+{
+  incdep_worker ((size_t)thrd);
+  return NULL;
+}
+
+#elif defined (WINDOWS32)
+static unsigned __stdcall
+incdep_worker_windows (void *thrd)
+{
+  incdep_worker ((size_t)thrd);
+  return 0;
+}
+
+#elif defined (__OS2__)
+static void
+incdep_worker_os2 (void *thrd)
+{
+  incdep_worker ((size_t)thrd);
+}
+#endif
+
+/* Checks if threads are enabled or not.
+
+   This is a special hack so that is possible to disable the threads when in a
+   debian fakeroot environment.  Thus, in addition to the KMK_THREADS_DISABLED
+   and KMK_THREADS_ENABLED environment variable check we also check for signs
+   of fakeroot.  */
+static int
+incdep_are_threads_enabled (void)
+{
+#if defined (CONFIG_WITHOUT_THREADS)
+  return 0;
+#endif
+
+  /* Generic overrides. */
+  if (getenv ("KMK_THREADS_DISABLED"))
+    {
+      O (message, 1, "Threads disabled (environment)");
+      return 0;
+    }
+  if (getenv ("KMK_THREADS_ENABLED"))
+    return 1;
+
+#if defined (__gnu_linux__) || defined (__linux__) || defined(__GLIBC__)
+  /* Try detect fakeroot. */
+  if (getenv ("FAKEROOTKEY")
+   || getenv ("FAKEROOTUID")
+   || getenv ("FAKEROOTGID")
+   || getenv ("FAKEROOTEUID")
+   || getenv ("FAKEROOTEGID")
+   || getenv ("FAKEROOTSUID")
+   || getenv ("FAKEROOTSGID")
+   || getenv ("FAKEROOTFUID")
+   || getenv ("FAKEROOTFGID")
+   || getenv ("FAKEROOTDONTTRYCHOWN")
+   || getenv ("FAKEROOT_FD_BASE")
+   || getenv ("FAKEROOT_DB_SEARCH_PATHS"))
+    {
+      O (message, 1, "Threads disabled (fakeroot)");
+      return 0;
+    }
+
+  /* LD_PRELOAD could indicate undetected debian fakeroot or some
+     other ingenius library which cannot deal correctly with threads. */
+  if (getenv ("LD_PRELOAD"))
+    {
+      O (message, 1, "Threads disabled (LD_PRELOAD)");
+      return 0;
+    }
+
+#elif defined(__APPLE__) \
+   || defined(__sun__) || defined(__SunOS__) || defined(__sun) || defined(__SunOS) \
+   || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) \
+   || defined(__HAIKU__)
+  /* No broken preload libraries known to be in common use on these platforms... */
+
+#elif defined(_MSC_VER) || defined(_WIN32) || defined(__OS2__)
+  /* No preload mess to care about. */
+
+#else
+# error "Add your self to the appropriate case above and send a patch to bird."
+#endif
+  return 1;
+}
+
+/* Creates the the worker threads. */
+static void
+incdep_init (floc *f)
+{
+  unsigned i;
+#if defined (HAVE_PTHREAD) && !defined (CONFIG_WITHOUT_THREADS)
+  int rc;
+  pthread_attr_t attr;
+
+#elif defined (WINDOWS32)
+  unsigned tid;
+  uintptr_t hThread;
+
+#elif defined (__OS2__)
+  int rc;
+  int tid;
+#endif
+  (void)f;
+
+  /* heap hacks */
+
+#ifdef __APPLE__
+  incdep_zone = malloc_create_zone (0, 0);
+  if (!incdep_zone)
+    incdep_zone = malloc_default_zone ();
+#endif
+
+
+  /* create the mutex and two condition variables / event objects. */
+
+#if defined (HAVE_PTHREAD) && !defined (CONFIG_WITHOUT_THREADS)
+  rc = pthread_mutex_init (&incdep_mtx, NULL);
+  if (rc)
+    ON (fatal, f, _("pthread_mutex_init failed: err=%d"), rc);
+  rc = pthread_cond_init (&incdep_cond_todo, NULL);
+  if (rc)
+    ON (fatal, f, _("pthread_cond_init failed: err=%d"), rc);
+  rc = pthread_cond_init (&incdep_cond_done, NULL);
+  if (rc)
+    ON (fatal, f, _("pthread_cond_init failed: err=%d"), rc);
+
+#elif defined (WINDOWS32)
+  InitializeCriticalSection (&incdep_mtx);
+  incdep_hev_todo = CreateEvent (NULL, TRUE /*bManualReset*/, FALSE /*bInitialState*/, NULL);
+  if (!incdep_hev_todo)
+    ON (fatal, f, _("CreateEvent failed: err=%d"), GetLastError());
+  incdep_hev_done = CreateEvent (NULL, TRUE /*bManualReset*/, FALSE /*bInitialState*/, NULL);
+  if (!incdep_hev_done)
+    ON (fatal, f, _("CreateEvent failed: err=%d"), GetLastError());
+  incdep_hev_todo_waiters = 0;
+  incdep_hev_done_waiters = 0;
+
+#elif defined (__OS2__)
+  _fmutex_create (&incdep_mtx, 0);
+  rc = DosCreateEventSem (NULL, &incdep_hev_todo, 0, FALSE);
+  if (rc)
+    ON (fatal, f, _("DosCreateEventSem failed: rc=%d"), rc);
+  rc = DosCreateEventSem (NULL, &incdep_hev_done, 0, FALSE);
+  if (rc)
+    ON (fatal, f, _("DosCreateEventSem failed: rc=%d"), rc);
+  incdep_hev_todo_waiters = 0;
+  incdep_hev_done_waiters = 0;
+#endif
+
+  /* create the worker threads and associated per thread data. */
+
+  incdep_terminate = 0;
+  if (incdep_are_threads_enabled())
+    {
+      incdep_num_threads = sizeof (incdep_threads) / sizeof (incdep_threads[0]);
+      if (incdep_num_threads + 1 > job_slots)
+        incdep_num_threads = job_slots <= 1 ? 1 : job_slots - 1;
+      for (i = 0; i < incdep_num_threads; i++)
+        {
+          /* init caches */
+          unsigned rec_size = sizeof (struct incdep_variable_in_set);
+          if (rec_size < sizeof (struct incdep_variable_def))
+            rec_size = sizeof (struct incdep_variable_def);
+          if (rec_size < sizeof (struct incdep_recorded_file))
+            rec_size = sizeof (struct incdep_recorded_file);
+          alloccache_init (&incdep_rec_caches[i], rec_size, "incdep rec",
+                           incdep_cache_allocator, (void *)(size_t)i);
+          alloccache_init (&incdep_dep_caches[i], sizeof(struct dep), "incdep dep",
+                           incdep_cache_allocator, (void *)(size_t)i);
+          strcache2_init (&incdep_dep_strcaches[i],
+                          "incdep dep", /* name */
+                          65536,        /* hash size */
+                          0,            /* default segment size*/
+#ifdef HAVE_CASE_INSENSITIVE_FS
+                          1,            /* case insensitive */
+#else
+                          0,            /* case insensitive */
+#endif
+                          0);           /* thread safe */
+
+          strcache2_init (&incdep_var_strcaches[i],
+                          "incdep var", /* name */
+                          32768,        /* hash size */
+                          0,            /* default segment size*/
+                          0,            /* case insensitive */
+                          0);           /* thread safe */
+
+          /* create the thread. */
+#if defined (HAVE_PTHREAD) && !defined (CONFIG_WITHOUT_THREADS)
+          rc = pthread_attr_init (&attr);
+          if (rc)
+            ON (fatal, f, _("pthread_attr_init failed: err=%d"), rc);
+          /*rc = pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_JOINABLE); */
+          rc = pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
+          if (rc)
+            ON (fatal, f, _("pthread_attr_setdetachstate failed: err=%d"), rc);
+          rc = pthread_create (&incdep_threads[i], &attr,
+                               incdep_worker_pthread, (void *)(size_t)i);
+          if (rc)
+            ON (fatal, f, _("pthread_mutex_init failed: err=%d"), rc);
+          pthread_attr_destroy (&attr);
+
+#elif defined (WINDOWS32)
+          tid = 0;
+          hThread = _beginthreadex (NULL, 128*1024, incdep_worker_windows,
+                                    (void *)i, 0, &tid);
+          if (hThread == 0 || hThread == ~(uintptr_t)0)
+            ON (fatal, f, _("_beginthreadex failed: err=%d"), errno);
+          incdep_threads[i] = (HANDLE)hThread;
+
+#elif defined (__OS2__)
+          tid = _beginthread (incdep_worker_os2, NULL, 128*1024, (void *)i);
+          if (tid <= 0)
+            ON (fatal, f, _("_beginthread failed: err=%d"), errno);
+          incdep_threads[i] = tid;
+#endif
+        }
+    }
+  else
+    incdep_num_threads = 0;
+
+  incdep_initialized = 1;
+}
+
+/* Flushes outstanding work and terminates the worker threads.
+   This is called from snap_deps(). */
+void
+incdep_flush_and_term (void)
+{
+  unsigned i;
+
+  if (!incdep_initialized)
+    return;
+
+  /* flush any out standing work */
+
+  incdep_flush_it (NILF);
+
+  /* tell the threads to terminate */
+
+  incdep_lock ();
+  incdep_terminate = 1;
+  incdep_signal_todo ();
+  incdep_unlock ();
+
+  /* wait for the threads to quit */
+
+  for (i = 0; i < incdep_num_threads; i++)
+    {
+      /* more later? */
+
+      /* terminate or join up the allocation caches. */
+      alloccache_term (&incdep_rec_caches[i], incdep_cache_deallocator, (void *)(size_t)i);
+      alloccache_join (&dep_cache, &incdep_dep_caches[i]);
+      strcache2_term (&incdep_dep_strcaches[i]);
+      strcache2_term (&incdep_var_strcaches[i]);
+    }
+  incdep_num_threads = 0;
+
+  /* destroy the lock and condition variables / event objects. */
+
+  /* later */
+
+  incdep_initialized = 0;
+}
+
+#ifdef PARSE_IN_WORKER
+/* Flushes a strcache entry returning the actual string cache entry.
+   The input is freed! */
+static const char *
+incdep_flush_strcache_entry (struct strcache2_entry *entry)
+{
+  if (!entry->user)
+    entry->user = (void *) strcache2_add_hashed_file (&file_strcache,
+                                                      (const char *)(entry + 1),
+                                                      entry->length, entry->hash);
+  return (const char *)entry->user;
+}
+
+/* Flushes the recorded instructions. */
+static void
+incdep_flush_recorded_instructions (struct incdep *cur)
+{
+  struct incdep_variable_in_set *rec_vis;
+  struct incdep_variable_def *rec_vd;
+  struct incdep_recorded_file *rec_f;
+
+  /* Display saved error. */
+
+  if (cur->err_msg)
+#ifdef INCDEP_USE_KFSCACHE
+    OSSNS (error, NILF, "%s/%s(%d): %s", cur->pFileObj->pParent->Obj.pszName, cur->pFileObj->pszName,
+           cur->err_line_no, cur->err_msg);
+#else
+    OSNS (error,NILF, "%s(%d): %s", cur->name, cur->err_line_no, cur->err_msg);
+#endif
+
+
+  /* define_variable_in_set */
+
+  rec_vis = cur->recorded_variables_in_set_head;
+  cur->recorded_variables_in_set_head = cur->recorded_variables_in_set_tail = NULL;
+  if (rec_vis)
+    do
+      {
+        void *free_me = rec_vis;
+        unsigned int name_length = rec_vis->name_entry->length;
+        define_variable_in_set (incdep_flush_strcache_entry (rec_vis->name_entry),
+                                name_length,
+                                rec_vis->value,
+                                rec_vis->value_length,
+                                rec_vis->duplicate_value,
+                                rec_vis->origin,
+                                rec_vis->recursive,
+                                rec_vis->set,
+                                rec_vis->flocp);
+        rec_vis = rec_vis->next;
+        incdep_free_rec (cur, free_me);
+      }
+    while (rec_vis);
+
+  /* do_variable_definition */
+
+  rec_vd = cur->recorded_variable_defs_head;
+  cur->recorded_variable_defs_head = cur->recorded_variable_defs_tail = NULL;
+  if (rec_vd)
+    do
+      {
+        void *free_me = rec_vd;
+        do_variable_definition_2 (rec_vd->flocp,
+                                  incdep_flush_strcache_entry (rec_vd->name_entry),
+                                  rec_vd->value,
+                                  rec_vd->value_length,
+                                  0,
+                                  rec_vd->value,
+                                  rec_vd->origin,
+                                  rec_vd->flavor,
+                                  rec_vd->target_var);
+        rec_vd = rec_vd->next;
+        incdep_free_rec (cur, free_me);
+      }
+    while (rec_vd);
+
+  /* record_files */
+
+  rec_f = cur->recorded_file_head;
+  cur->recorded_file_head = cur->recorded_file_tail = NULL;
+  if (rec_f)
+    do
+      {
+        void *free_me = rec_f;
+        struct dep *dep;
+
+        for (dep = rec_f->deps; dep; dep = dep->next)
+          dep->name = incdep_flush_strcache_entry ((struct strcache2_entry *)dep->name);
+
+        incdep_commit_recorded_file (incdep_flush_strcache_entry (rec_f->filename_entry),
+                                     rec_f->deps,
+                                     rec_f->flocp);
+
+        rec_f = rec_f->next;
+        incdep_free_rec (cur, free_me);
+      }
+    while (rec_f);
+}
+#endif /* PARSE_IN_WORKER */
+
+/* Record / issue a warning about a misformed dep file. */
+static void
+incdep_warn (struct incdep *cur, unsigned int line_no, const char *msg)
+{
+  if (cur->worker_tid == -1)
+#ifdef INCDEP_USE_KFSCACHE
+    OSSNS (error,NILF, "%s/%s(%d): %s", cur->pFileObj->pParent->Obj.pszName, cur->pFileObj->pszName, line_no, msg);
+#else
+    OSNS (error, NILF, "%s(%d): %s", cur->name, line_no, msg);
+#endif
+#ifdef PARSE_IN_WORKER
+  else
+    {
+      cur->err_line_no = line_no;
+      cur->err_msg = msg;
+    }
+#endif
+}
+
+/* Dependency or file strcache allocation / recording. */
+static const char *
+incdep_dep_strcache (struct incdep *cur, const char *str, int len)
+{
+  const char *ret;
+  if (cur->worker_tid == -1)
+    {
+      /* Make sure the string is terminated before we hand it to
+         strcache_add_len so it does have to make a temporary copy
+         of it on the stack. */
+      char ch = str[len];
+      ((char *)str)[len] = '\0';
+      ret = strcache_add_len (str, len);
+      ((char *)str)[len] = ch;
+    }
+  else
+    {
+      /* Add it out the strcache of the thread. */
+      ret = strcache2_add (&incdep_dep_strcaches[cur->worker_tid], str, len);
+      ret = (const char *)strcache2_get_entry(&incdep_dep_strcaches[cur->worker_tid], ret);
+    }
+  return ret;
+}
+
+/* Variable name allocation / recording. */
+static const char *
+incdep_var_strcache (struct incdep *cur, const char *str, int len)
+{
+  const char *ret;
+  if (cur->worker_tid == -1)
+    {
+      /* XXX: we're leaking this memory now! This will be fixed later. */
+      ret = xmalloc (len + 1);
+      memcpy ((char *)ret, str, len);
+      ((char *)ret)[len] = '\0';
+    }
+  else
+    {
+      /* Add it out the strcache of the thread. */
+      ret = strcache2_add (&incdep_var_strcaches[cur->worker_tid], str, len);
+      ret = (const char *)strcache2_get_entry(&incdep_var_strcaches[cur->worker_tid], ret);
+    }
+  return ret;
+}
+
+/* Record / perform a variable definition in a set.
+   The NAME is in the string cache.
+   The VALUE is on the heap.
+   The DUPLICATE_VALUE is always 0. */
+static void
+incdep_record_variable_in_set (struct incdep *cur,
+                               const char *name, unsigned int name_length,
+                               const char *value,
+                               unsigned int value_length,
+                               int duplicate_value,
+                               enum variable_origin origin,
+                               int recursive,
+                               struct variable_set *set,
+                               const floc *flocp)
+{
+  assert (!duplicate_value);
+  if (cur->worker_tid == -1)
+    define_variable_in_set (name, name_length, value, value_length,
+                            duplicate_value, origin, recursive, set, flocp);
+#ifdef PARSE_IN_WORKER
+  else
+    {
+      struct incdep_variable_in_set *rec =
+        (struct incdep_variable_in_set *)incdep_alloc_rec (cur);
+      rec->name_entry = (struct strcache2_entry *)name;
+      rec->value = value;
+      rec->value_length = value_length;
+      rec->duplicate_value = duplicate_value;
+      rec->origin = origin;
+      rec->recursive = recursive;
+      rec->set = set;
+      rec->flocp = flocp;
+
+      rec->next = NULL;
+      if (cur->recorded_variables_in_set_tail)
+        cur->recorded_variables_in_set_tail->next = rec;
+      else
+        cur->recorded_variables_in_set_head = rec;
+      cur->recorded_variables_in_set_tail = rec;
+    }
+#endif
+}
+
+/* Record / perform a variable definition. The VALUE should be disposed of. */
+static void
+incdep_record_variable_def (struct incdep *cur,
+                            const floc *flocp,
+                            const char *name,
+                            unsigned int name_length,
+                            char *value,
+                            unsigned int value_length,
+                            enum variable_origin origin,
+                            enum variable_flavor flavor,
+                            int target_var)
+{
+  if (cur->worker_tid == -1)
+    do_variable_definition_2 (flocp, name, value, value_length, 0, value,
+                              origin, flavor, target_var);
+#ifdef PARSE_IN_WORKER
+  else
+    {
+      struct incdep_variable_def *rec =
+        (struct incdep_variable_def *)incdep_alloc_rec (cur);
+      rec->flocp = flocp;
+      rec->name_entry = (struct strcache2_entry *)name;
+      rec->value = value;
+      rec->value_length = value_length;
+      rec->origin = origin;
+      rec->flavor = flavor;
+      rec->target_var = target_var;
+
+      rec->next = NULL;
+      if (cur->recorded_variable_defs_tail)
+        cur->recorded_variable_defs_tail->next = rec;
+      else
+        cur->recorded_variable_defs_head = rec;
+      cur->recorded_variable_defs_tail = rec;
+    }
+#else
+  (void)name_length;
+#endif
+}
+
+/* Similar to record_files in read.c, only much much simpler. */
+static void
+incdep_commit_recorded_file (const char *filename, struct dep *deps,
+                             const floc *flocp)
+{
+  struct file *f;
+
+  /* Perform some validations. */
+  if (filename[0] == '.'
+      && (   streq(filename, ".POSIX")
+          || streq(filename, ".EXPORT_ALL_VARIABLES")
+          || streq(filename, ".INTERMEDIATE")
+          || streq(filename, ".LOW_RESOLUTION_TIME")
+          || streq(filename, ".NOTPARALLEL")
+          || streq(filename, ".ONESHELL")
+          || streq(filename, ".PHONY")
+          || streq(filename, ".PRECIOUS")
+          || streq(filename, ".SECONDARY")
+          || streq(filename, ".SECONDTARGETEXPANSION")
+          || streq(filename, ".SILENT")
+          || streq(filename, ".SHELLFLAGS")
+          || streq(filename, ".SUFFIXES")
+         )
+     )
+    {
+      OS (error, flocp, _("reserved filename '%s' used in dependency file, ignored"), filename);
+      return;
+    }
+
+  /* Lookup or create an entry in the database. */
+  f = enter_file (filename);
+  if (f->double_colon)
+    {
+      OS (error, flocp, _("dependency file '%s' has a double colon entry already, ignoring"), filename);
+      return;
+    }
+  f->is_target = 1;
+
+  /* Append dependencies. */
+  deps = enter_prereqs (deps, NULL);
+  if (deps)
+    {
+      struct dep *last = f->deps;
+      if (!last)
+        f->deps = deps;
+      else
+        {
+          while (last->next)
+            last = last->next;
+          last->next = deps;
+        }
+    }
+}
+
+/* Record a file.*/
+static void
+incdep_record_file (struct incdep *cur,
+                    const char *filename,
+                    struct dep *deps,
+                    const floc *flocp)
+{
+  if (cur->worker_tid == -1)
+    incdep_commit_recorded_file (filename, deps, flocp);
+#ifdef PARSE_IN_WORKER
+  else
+    {
+      struct incdep_recorded_file *rec =
+        (struct incdep_recorded_file *) incdep_alloc_rec (cur);
+
+      rec->filename_entry = (struct strcache2_entry *)filename;
+      rec->deps = deps;
+      rec->flocp = flocp;
+
+      rec->next = NULL;
+      if (cur->recorded_file_tail)
+        cur->recorded_file_tail->next = rec;
+      else
+        cur->recorded_file_head = rec;
+      cur->recorded_file_tail = rec;
+    }
+#endif
+}
+
+/* Counts slashes backwards from SLASH, stopping at START. */
+static size_t incdep_count_slashes_backwards(const char *slash, const char *start)
+{
+  size_t slashes = 1;
+  assert (*slash == '\\');
+  while ((uintptr_t)slash > (uintptr_t)start && slash[0 - slashes] == '\\')
+    slashes++;
+  return slashes;
+}
+
+/* Whitespace cannot be escaped at the end of a line, there has to be
+   some stuff following it other than a line continuation slash.
+
+   So, we look ahead and makes sure that there is something non-whitespaced
+   following this allegedly escaped whitespace.
+
+   This code ASSUMES the file content is zero terminated! */
+static int incdep_verify_escaped_whitespace(const char *ws)
+{
+  char ch;
+
+  assert(ws[-1] == '\\');
+  assert(ISBLANK((unsigned int)ws[0]));
+
+  /* If the character following the '\ ' sequence is not a whitespace,
+     another escape character or null terminator, we're good. */
+  ws += 2;
+  ch = *ws;
+  if (ch != '\\' && !ISSPACE((unsigned int)ch) && ch != '\0')
+    return 1;
+
+  /* Otherwise we'll have to parse forward till we hit the end of the
+     line/file or something. */
+  while ((ch = *ws++) != '\0')
+    {
+      if (ch == '\\')
+        {
+           /* escaped newline? */
+           ch = *ws;
+           if (ch == '\n')
+             ws++;
+           else  if (ch == '\r' && ws[1] == '\n')
+             ws += 2;
+           else
+             return 1;
+        }
+      else if (ISBLANK((unsigned int)ch))
+      { /* contine */ }
+      else if (!ISSPACE((unsigned int)ch))
+        return 1;
+      else
+        return 0; /* newline; all trailing whitespace will be ignored. */
+    }
+
+  return 0;
+}
+
+/* Unescapes the next filename and returns cached copy.
+
+   Modifies the input string that START points to.
+
+   When NEXTP is not NULL, ASSUME target filename and that END isn't entirely
+   accurate in case the filename ends with a trailing backslash.  There can be
+   more than one filename in a this case.  NEXTP will be set to the first
+   character after then filename.
+
+   When NEXTP is NULL, ASSUME exactly one dependency filename and that END is
+   accurately deliminating the string.
+   */
+static const char *
+incdep_unescape_and_cache_filename(struct incdep *curdep, char *start, const char *end,
+                                   int const is_dep, const char **nextp, unsigned int *linenop)
+{
+  unsigned const esc_mask = MAP_BLANK        /*  ' ' + '\t' */
+                          | MAP_COLON        /* ':' */
+                          | MAP_COMMENT      /* '#' */
+                          | MAP_EQUALS       /* '=' */
+                          | MAP_SEMI         /* ';' */
+                          | (  is_dep
+                             ? MAP_PIPE      /* '|' */
+                             : MAP_PERCENT); /* '%' */
+  unsigned const all_esc_mask = esc_mask | MAP_BLANK | MAP_NEWLINE;
+  unsigned const stop_mask = nextp ? MAP_BLANK | MAP_NEWLINE | (!is_dep ? MAP_COLON : 0) : 0;
+  char volatile *src;
+  char volatile *dst;
+
+  /*
+   * Skip forward to the first escaped character so we can avoid unnecessary shifting.
+   */
+#if 1
+  src = start;
+  dst = start;
+#elif 1
+  static const char s_szStop[] = "\n\r\t ";
+
+  src = memchr(start, '$', end - start);
+  dst = memchr(start, '\\', end - start);
+  if (src && ((uintptr_t)src < (uintptr_t)dst || dst == NULL))
+    dst = src;
+  else if (dst && ((uintptr_t)dst < (uintptr_t)src || src == NULL))
+    src = dst;
+  else
+    {
+      assert(src == NULL && dst == NULL);
+      if (nextp)
+        {
+           int i = sizeof(s_szStop);
+           while (i-- > 0)
+             {
+               char *stop = memchr(start, s_szStop[i], end - start);
+               if (stop)
+                 end = stop;
+             }
+            *nextp = end;
+        }
+      return incdep_dep_strcache (curdep, start, end - start);
+    }
+  if (nextp)
+    {
+      char *stop = src;
+      int i = sizeof(s_szStop);
+      while (i-- > 0)
+        {
+          char *stop2 = memchr(start, s_szStop[i], stop - start);
+          if (stop2)
+            stop = stop2;
+        }
+      if (stop != src)
+        {
+          *nextp = stop;
+          return incdep_dep_strcache (curdep, start, stop - start);
+        }
+    }
+#endif
+
+  /*
+   * Copy char-by-char, undoing escaping as we go along.
+   */
+  while ((uintptr_t)src < (uintptr_t)end)
+    {
+      const char ch = *src++;
+      if (ch != '\\' && ch != '$')
+        {
+          if (!STOP_SET (ch, stop_mask))
+            *dst++ = ch;
+          else
+            {
+              src--;
+              break;
+            }
+        }
+      else
+        {
+          char ch2 = *src++;  /* No bounds checking to handle "/dir/file\ : ..."  when end points at " :". */
+          if (ch == '$')
+            {
+              if (ch2 != '$') /* $$ -> $ - Ignores secondary expansion! */
+                  src--;
+              *dst++ = ch;
+            }
+          else
+            {
+              unsigned int ch2_map;
+
+              /* Eat all the slashes and see what's at the end of them as that's all
+                 that's relevant.  If there is an escapable char, we'll emit half of
+                 the slashes. */
+              size_t const max_slashes = src - start - 1;
+              size_t slashes = 1;
+              while (ch2 == '\\')
+                {
+                  slashes++;
+                  ch2 = *src++;
+                }
+
+              /* Is it escapable? */
+              ch2_map = stopchar_map[(unsigned char)ch2];
+              if (ch2_map & all_esc_mask)
+                {
+                  /* Non-whitespace is simple: Slash slashes, output or stop. */
+                  if (!(ch2_map & (MAP_BLANK | MAP_NEWLINE)))
+                    {
+                      assert(ch2_map & esc_mask);
+                      while (slashes >= 2)
+                        {
+                          *dst++ = '\\';
+                          slashes -= 2;
+                        }
+                      if (slashes || !(stop_mask & ch2_map))
+                        *dst++ = ch2;
+                      else
+                        {
+                          src--;
+                          break;
+                        }
+                    }
+                  /* Escaped blanks or newlines.
+
+                     We have to pretent that we've already replaced any escaped newlines
+                     and associated whitespace with a single space here.  We also have to
+                     pretend trailing whitespace doesn't exist when IS_DEP is non-zero.
+                     This makes for pretty interesting times... */
+                  else
+                    {
+                      char ch3;
+
+                      /* An Escaped blank is interesting because it is striped unconditionally
+                         at the end of a line, regardless of how many escaped newlines may
+                         following it.  We join the escaped newline handling if we fine one
+                         following us. */
+                      if (ch2_map & MAP_BLANK)
+                        {
+                          /* skip whitespace and check for escaped newline. */
+                          volatile char * const src_saved = src;
+                          while ((ch3 = *src) != '\0' && ISBLANK(ch3))
+                            src++;
+                          if (ch3 == '\\' && src[1] == '\n')
+                            src += 2; /* Escaped blank & newline joins into single space. */
+                          else if (ch3 == '\\' && src[1] == '\r' && src[2] == '\n')
+                            src += 3; /* -> Join the escaped newline code below on the next line. */
+                          else if (STOP_SET(ch3, stop_mask & MAP_NEWLINE))
+                            { /* last thing on the line, no blanks to escape. */
+                              while (slashes-- > 0)
+                                *dst++ = '\\';
+                              break;
+                            }
+                          else
+                            {
+                              src = src_saved;
+                              while (slashes >= 2)
+                                {
+                                  *dst++ = '\\';
+                                  slashes -= 2;
+                                }
+                              if (slashes)
+                                {
+                                  *dst++ = ch2;
+                                  continue;
+                                }
+                              assert (nextp || (uintptr_t)src >= (uintptr_t)end);
+                              break;
+                            }
+                        }
+                      /* Escaped newlines get special treatment as they an any adjacent whitespace
+                         gets reduced to a single space, including subsequent escaped newlines.
+                         In addition, if this is the final dependency/file and there is no
+                         significant new characters following this escaped newline, the replacement
+                         space will also be stripped and we won't have anything to escape, meaning
+                         that the slashes will remain as is.  Finally, none of this space stuff can
+                         be stop characters, unless of course a newline isn't escaped. */
+                      else
+                        {
+                          assert (ch2_map & MAP_NEWLINE);
+                          if (ch2 == '\r' && *src == '\n')
+                            src++;
+                        }
+
+                      /* common space/newline code */
+                      for (;;)
+                        {
+                          if (linenop)
+                            *linenop += 1;
+                          while ((uintptr_t)src < (uintptr_t)end && ISBLANK(*src))
+                            src++;
+                          if ((uintptr_t)src >= (uintptr_t)end)
+                            {
+                              ch3 = '\0';
+                              break;
+                            }
+                          ch3 = *src;
+                          if (ch3 != '\\')
+                            break;
+                          ch3 = src[1];
+                          if (ch3 == '\n')
+                            src += 2;
+                          else if (ch3 == '\r' && src[2] == '\n')
+                            src += 3;
+                          else
+                              break;
+                        }
+
+                      if (is_dep && STOP_SET(ch3, stop_mask | MAP_NUL))
+                        { /* last thing on the line, no blanks to escape. */
+                          while (slashes-- > 0)
+                            *dst++ = '\\';
+                          break;
+                        }
+                      while (slashes >= 2)
+                        {
+                          *dst++ = '\\';
+                          slashes -= 2;
+                        }
+                      if (slashes)
+                        *dst++ = ' ';
+                      else
+                        {
+                          assert (nextp || (uintptr_t)src >= (uintptr_t)end);
+                          break;
+                        }
+                    }
+                }
+              /* Just output the slash if non-escapable character: */
+              else
+                {
+                  while (slashes-- > 0)
+                    *dst++ = '\\';
+                  src--;
+                }
+            }
+        }
+    }
+
+  if (nextp)
+    *nextp = (const char *)src;
+  return incdep_dep_strcache(curdep, start, dst - start);
+}
+
+/* no nonsense dependency file including.
+
+   Because nobody wants bogus dependency files to break their incremental
+   builds with hard to comprehend error messages, this function does not
+   use the normal eval routine but does all the parsing itself. This isn't,
+   as much work as it sounds, because the necessary feature set is very
+   limited.
+
+   eval_include_dep_file groks:
+
+   define var
+   endef
+
+   var [|:|?|>]= value [\]
+
+   [\]
+   file: [deps] [\]
+
+   */
+static void
+eval_include_dep_file (struct incdep *curdep, floc *f)
+{
+  unsigned line_no = 1;
+  const char *file_end = curdep->file_end;
+  const char *cur = curdep->file_base;
+  const char *endp;
+
+  /* if no file data, just return immediately. */
+  if (!cur)
+    return;
+
+  /* now parse the file. */
+  while ((uintptr_t)cur < (uintptr_t)file_end)
+    {
+      /* skip empty lines */
+      while ((uintptr_t)cur < (uintptr_t)file_end && ISSPACE (*cur) && *cur != '\n')
+        ++cur;
+      if ((uintptr_t)cur >= (uintptr_t)file_end)
+        break;
+      if (*cur == '#')
+        {
+          cur = memchr (cur, '\n', file_end - cur);
+          if (!cur)
+            break;
+        }
+      if (*cur == '\\')
+        {
+          unsigned eol_len = (file_end - cur > 1 && cur[1] == '\n') ? 2
+                           : (file_end - cur > 2 && cur[1] == '\r' && cur[2] == '\n') ? 3
+                           : (file_end - cur == 1) ? 1 : 0;
+           if (eol_len)
+             {
+               cur += eol_len;
+               line_no++;
+               continue;
+             }
+        }
+      if (*cur == '\n')
+        {
+          cur++;
+          line_no++;
+          continue;
+        }
+
+      /* define var
+         ...
+         endef */
+      if (strneq (cur, "define ", 7))
+        {
+          const char *var;
+          unsigned var_len;
+          const char *value_start;
+          const char *value_end;
+          char *value;
+          unsigned value_len;
+          int found_endef = 0;
+
+          /* extract the variable name. */
+          cur += 7;
+          while (ISBLANK (*cur))
+            ++cur;
+          value_start = endp = memchr (cur, '\n', file_end - cur);
+          if (!endp)
+              endp = cur;
+          while (endp > cur && ISSPACE (endp[-1]))
+            --endp;
+          var_len = endp - cur;
+          if (!var_len)
+          {
+              incdep_warn (curdep, line_no, "bogus define statement.");
+              break;
+          }
+          var = incdep_var_strcache (curdep, cur, var_len);
+
+          /* find the end of the variable. */
+          cur = value_end = value_start = value_start + 1;
+          ++line_no;
+          while ((uintptr_t)cur < (uintptr_t)file_end)
+            {
+              /* check for endef, don't bother with skipping leading spaces. */
+              if (   file_end - cur >= 5
+                  && strneq (cur, "endef", 5))
+                {
+                  endp = cur + 5;
+                  while ((uintptr_t)endp < (uintptr_t)file_end && ISSPACE (*endp) && *endp != '\n')
+                    endp++;
+                  if ((uintptr_t)endp >= (uintptr_t)file_end || *endp == '\n')
+                    {
+                      found_endef = 1;
+                      cur = (uintptr_t)endp >= (uintptr_t)file_end ? file_end : endp + 1;
+                      break;
+                    }
+                }
+
+              /* skip a line ahead. */
+              cur = value_end = memchr (cur, '\n', file_end - cur);
+              if (cur != NULL)
+                ++cur;
+              else
+                cur = value_end = file_end;
+              ++line_no;
+            }
+
+          if (!found_endef)
+            {
+              incdep_warn (curdep, line_no, "missing endef, dropping the rest of the file.");
+              break;
+            }
+          value_len = value_end - value_start;
+          if (memchr (value_start, '\0', value_len))
+            {
+              incdep_warn (curdep, line_no, "'\\0' in define, dropping the rest of the file.");
+              break;
+            }
+
+          /* make a copy of the value, converting \r\n to \n, and define it. */
+          value = incdep_xmalloc (curdep, value_len + 1);
+          endp = memchr (value_start, '\r', value_len);
+          if (endp)
+            {
+              const char *src = value_start;
+              char *dst = value;
+              for (;;)
+                {
+                  size_t len = endp - src;
+                  memcpy (dst, src, len);
+                  dst += len;
+                  src = endp;
+                  if ((uintptr_t)src + 1 < (uintptr_t)file_end && src[1] == '\n')
+                      src++; /* skip the '\r' */
+                  if (src >= value_end)
+                    break;
+                  endp = memchr (endp + 1, '\r', src - value_end);
+                  if (!endp)
+                    endp = value_end;
+                }
+              value_len = dst - value;
+            }
+          else
+            memcpy (value, value_start, value_len);
+          value [value_len] = '\0';
+
+          incdep_record_variable_in_set (curdep,
+                                         var, var_len, value, value_len,
+                                         0 /* don't duplicate */, o_file,
+                                         0 /* defines are recursive but this is faster */,
+                                         NULL /* global set */, f);
+        }
+
+      /* file: deps
+         OR
+         variable [:]= value */
+      else
+        {
+          const char *equalp;
+          const char *eol;
+
+          /* Look for a colon or an equal sign.  In the assignment case, we
+             require it to be on the same line as the variable name to simplify
+             the code.  Because of clang, we cannot make the same assumptions
+             with file dependencies.  So, start with the equal. */
+
+          assert (*cur != '\n');
+          eol = memchr (cur, '\n', file_end - cur);
+          if (!eol)
+            eol = file_end;
+          equalp = memchr (cur, '=', eol - cur);
+          if (equalp && equalp != cur && (ISSPACE(equalp[-1]) || equalp[-1] != '\\'))
+            {
+              /* An assignment of some sort. */
+              const char *var;
+              unsigned var_len;
+              const char *value_start;
+              const char *value_end;
+              char *value;
+              unsigned value_len;
+              unsigned multi_line = 0;
+              enum variable_flavor flavor;
+
+              /* figure the flavor first. */
+              flavor = f_recursive;
+              if (equalp > cur)
+                {
+                  if (equalp[-1] == ':')
+                    flavor = f_simple;
+                  else if (equalp[-1] == '?')
+                    flavor = f_conditional;
+                  else if (equalp[-1] == '+')
+                    flavor = f_append;
+                  else if (equalp[-1] == '>')
+                    flavor = f_prepend;
+                }
+
+              /* extract the variable name. */
+              endp = flavor == f_recursive ? equalp : equalp - 1;
+              while (endp > cur && ISBLANK (endp[-1]))
+                --endp;
+              var_len = endp - cur;
+              if (!var_len)
+                {
+                  incdep_warn (curdep, line_no, "empty variable. (includedep)");
+                  break;
+                }
+              if (   memchr (cur, '$', var_len)
+                  || memchr (cur, ' ', var_len)
+                  || memchr (cur, '\t', var_len))
+                {
+                  incdep_warn (curdep, line_no, "fancy variable name. (includedep)");
+                  break;
+                }
+              var = incdep_var_strcache (curdep, cur, var_len);
+
+              /* find the start of the value. */
+              cur = equalp + 1;
+              while ((uintptr_t)cur < (uintptr_t)file_end && ISBLANK (*cur))
+                cur++;
+              value_start = cur;
+
+              /* find the end of the value / line (this isn't 101% correct). */
+              value_end = cur;
+              while ((uintptr_t)cur < (uintptr_t)file_end)
+                {
+                  endp = value_end = memchr (cur, '\n', file_end - cur);
+                  if (!value_end)
+                    value_end = file_end;
+                  if (value_end - 1 >= cur && value_end[-1] == '\r')
+                    --value_end;
+                  if (value_end - 1 < cur || value_end[-1] != '\\')
+                    {
+                      cur = endp ? endp + 1 : file_end;
+                      break;
+                    }
+                  --value_end;
+                  if (value_end - 1 >= cur && value_end[-1] == '\\')
+                    {
+                      incdep_warn (curdep, line_no, "fancy escaping! (includedep)");
+                      cur = NULL;
+                      break;
+                    }
+                  if (!endp)
+                    {
+                      cur = file_end;
+                      break;
+                    }
+
+                  cur = endp + 1;
+                  ++multi_line;
+                  ++line_no;
+                }
+              if (!cur)
+                break;
+              ++line_no;
+
+              /* make a copy of the value, converting \r\n to \n, and define it. */
+              value_len = value_end - value_start;
+              value = incdep_xmalloc (curdep, value_len + 1);
+              if (!multi_line)
+                  memcpy (value, value_start, value_len);
+              else
+                {
+                  /* unescape it */
+                  const char *src = value_start;
+                  char *dst = value;
+                  while (src < value_end)
+                    {
+                      const char *nextp;
+
+                      endp = memchr (src, '\n', value_end - src);
+                      if (!endp)
+                        nextp = endp = value_end;
+                      else
+                        nextp = endp + 1;
+                      if (endp > src && endp[-1] == '\r')
+                        --endp;
+                      if (endp > src && endp[-1] == '\\')
+                        --endp;
+
+                      if (src != value_start)
+                        *dst++ = ' ';
+                      memcpy (dst, src, endp - src);
+                      dst += endp - src;
+                      src = nextp;
+                    }
+                  value_len = dst - value;
+                }
+              value [value_len] = '\0';
+
+              /* do the definition */
+              if (flavor == f_recursive
+               || (   flavor == f_simple
+                   && !memchr (value, '$', value_len)))
+                incdep_record_variable_in_set (curdep,
+                                               var, var_len, value, value_len,
+                                               0 /* don't duplicate */, o_file,
+                                               flavor == f_recursive /* recursive */,
+                                               NULL /* global set */, f);
+              else
+                incdep_record_variable_def (curdep,
+                                            f, var, var_len, value, value_len,
+                                            o_file, flavor, 0 /* not target var */);
+            }
+          else
+            {
+              /* Expecting: file: dependencies */
+
+              int unescape_filename = 0;
+              const char *filename;
+              const char *fnnext;
+              const char *fnend;
+              const char *colonp;
+              struct dep *deps = 0;
+              struct dep **nextdep = &deps;
+              struct dep *dep;
+
+
+              /* Locate the next file colon.  If it's not within the bounds of
+                 the current line, check that all new line chars are escaped. */
+
+              colonp = memchr (cur, ':', file_end - cur);
+              while (   colonp
+                     && (   (   colonp != cur
+                             && colonp[-1] == '\\'
+                             && incdep_count_slashes_backwards (&colonp[-1], cur) & 1)
+#ifdef HAVE_DOS_PATHS
+                         || (   colonp + 1 < file_end
+                             && (colonp[1] == '/' || colonp[1] == '\\')
+                             && colonp > cur
+                             && isalpha ((unsigned char)colonp[-1])
+                             && (   colonp == cur + 1
+                                 || ISBLANK ((unsigned char)colonp[-2])))
+#endif
+                        )
+                    )
+                  colonp = memchr (colonp + 1, ':', file_end - (colonp + 1));
+              if (!colonp)
+                {
+                  incdep_warn (curdep, line_no, "no colon.");
+                  break;
+                }
+
+              if ((uintptr_t)colonp < (uintptr_t)eol)
+                  unescape_filename = memchr (cur, '\\', colonp - cur) != NULL
+                                   || memchr (cur, '$', colonp - cur) != NULL;
+              else if (memchr (eol, '=', colonp - eol))
+                {
+                  incdep_warn (curdep, line_no, "multi line assignment / dependency confusion.");
+                  break;
+                }
+              else
+                {
+                  const char *sol = cur;
+                  do
+                    {
+                      char *eol2 = (char *)eol - 1;
+                      if ((uintptr_t)eol2 >= (uintptr_t)sol && *eol2 == '\r') /* DOS line endings. */
+                        eol2--;
+                      if ((uintptr_t)eol2 < (uintptr_t)sol || *eol2 != '\\')
+                          incdep_warn (curdep, line_no, "no colon.");
+                      else if (eol2 != sol && eol2[-1] == '\\')
+                          incdep_warn (curdep, line_no, "fancy EOL escape. (includedep)");
+                      else
+                        {
+                          line_no++;
+                          sol = eol + 1;
+                          eol = memchr (sol, '\n', colonp - sol);
+                          continue;
+                        }
+                      sol = NULL;
+                      break;
+                    }
+                  while (eol != NULL);
+                  if (!sol)
+                    break;
+                  unescape_filename = 1;
+                }
+
+              /* Extract the first filename after trimming and basic checks. */
+              fnend = colonp;
+              while ((uintptr_t)fnend > (uintptr_t)cur && ISBLANK (fnend[-1]))
+                --fnend;
+              if (cur == fnend)
+                {
+                  incdep_warn (curdep, line_no, "empty filename.");
+                  break;
+                }
+              fnnext = cur;
+              if (!unescape_filename)
+                {
+                  while (fnnext != fnend && !ISBLANK (*fnnext))
+                    fnnext++;
+                  filename = incdep_dep_strcache (curdep, cur, fnnext - cur);
+                }
+              else
+                filename = incdep_unescape_and_cache_filename (curdep, (char *)fnnext, fnend, 0, &fnnext, NULL);
+
+              /* parse any dependencies. */
+              cur = colonp + 1;
+              while ((uintptr_t)cur < (uintptr_t)file_end)
+                {
+                  const char *dep_file;
+
+                  /* skip blanks and count lines. */
+                  char ch = 0;
+                  while ((uintptr_t)cur < (uintptr_t)file_end && ISSPACE ((ch = *cur)) && ch != '\n')
+                    ++cur;
+                  if ((uintptr_t)cur >= (uintptr_t)file_end)
+                    break;
+                  if (ch == '\n')
+                    {
+                      cur++;
+                      line_no++;
+                      break;
+                    }
+
+                  /* continuation + eol? */
+                  if (ch == '\\')
+                    {
+                      unsigned eol_len = (file_end - cur > 1 && cur[1] == '\n') ? 2
+                                       : (file_end - cur > 2 && cur[1] == '\r' && cur[2] == '\n') ? 3
+                                       : (file_end - cur == 1) ? 1 : 0;
+                      if (eol_len)
+                        {
+                          cur += eol_len;
+                          line_no++;
+                          continue;
+                        }
+                    }
+
+                  /* find the end of the filename and cache it */
+                  dep_file = NULL;
+                  endp = cur;
+                  for (;;)
+                    if ((uintptr_t)endp < (uintptr_t)file_end)
+                      {
+                         ch = *endp;
+                         if (ch != '\\' && ch != '$' )
+                           {
+                             if (!ISSPACE (ch))
+                               endp++;
+                             else
+                               {
+                                 dep_file = incdep_dep_strcache(curdep, cur, endp - cur);
+                                 break;
+                               }
+                           }
+                         else
+                           {
+                             /* potential escape sequence, let the unescaper do the rest. */
+                             dep_file = incdep_unescape_and_cache_filename (curdep, (char *)cur, file_end, 1, &endp, &line_no);
+                             break;
+                           }
+                      }
+                    else
+                      {
+                        dep_file = incdep_dep_strcache(curdep, cur, endp - cur);
+                        break;
+                      }
+
+                  /* add it to the list. */
+                  *nextdep = dep = incdep_alloc_dep (curdep);
+                  dep->includedep = 1;
+                  dep->name = dep_file;
+                  nextdep = &dep->next;
+
+                  cur = endp;
+                }
+
+              /* enter the file with its dependencies. */
+              incdep_record_file (curdep, filename, deps, f);
+
+              /* More files? Record them with the same dependency list. */
+              if ((uintptr_t)fnnext < (uintptr_t)fnend)
+                for (;;)
+                  {
+                    const char *filename_prev = filename;
+                    while (fnnext != fnend && ISBLANK (*fnnext))
+                      fnnext++;
+                    if (fnnext == fnend)
+                      break;
+                    if (*fnnext == '\\')
+                      {
+                        if (fnnext[1] == '\n')
+                          {
+                            line_no++;
+                            fnnext += 2;
+                            continue;
+                          }
+                        if (fnnext[1] == '\r' && fnnext[2] == '\n')
+                          {
+                            line_no++;
+                            fnnext += 3;
+                            continue;
+                          }
+                      }
+
+                    if (!unescape_filename)
+                      {
+                        const char *fnstart = fnnext;
+                        while (fnnext != fnend && !ISBLANK (*fnnext))
+                          fnnext++;
+                        filename = incdep_dep_strcache (curdep, fnstart, fnnext - fnstart);
+                      }
+                    else
+                      filename = incdep_unescape_and_cache_filename (curdep, (char *)fnnext, fnend, 0, &fnnext, NULL);
+                    if (filename != filename_prev) /* clang optimization. */
+                      incdep_record_file (curdep, filename, incdep_dup_dep_list (curdep, deps), f);
+                  }
+            }
+        }
+    }
+
+  /* free the file data */
+  incdep_xfree (curdep, curdep->file_base);
+  curdep->file_base = curdep->file_end = NULL;
+}
+
+/* Flushes the incdep todo and done lists. */
+static void
+incdep_flush_it (floc *f)
+{
+  incdep_lock ();
+  for (;;)
+    {
+      struct incdep *cur = incdep_head_done;
+
+      /* if the done list is empty, grab a todo list entry. */
+      if (!cur && incdep_head_todo)
+        {
+          cur = incdep_head_todo;
+          if (cur->next)
+            incdep_head_todo = cur->next;
+          else
+            incdep_head_todo = incdep_tail_todo = NULL;
+          incdep_unlock ();
+
+          incdep_read_file (cur, f);
+          eval_include_dep_file (cur, f);
+          incdep_freeit (cur);
+
+          incdep_lock ();
+          continue;
+        }
+
+      /* if the todo list and done list are empty we're either done
+         or will have to wait for the thread(s) to finish. */
+      if (!cur && !incdep_num_reading)
+          break; /* done */
+      if (!cur)
+        {
+          while (!incdep_head_done)
+            incdep_wait_done ();
+          cur = incdep_head_done;
+        }
+
+      /* we grab the entire done list and work thru it. */
+      incdep_head_done = incdep_tail_done = NULL;
+      incdep_unlock ();
+
+      while (cur)
+        {
+          struct incdep *next = cur->next;
+#ifdef PARSE_IN_WORKER
+          incdep_flush_recorded_instructions (cur);
+#else
+          eval_include_dep_file (cur, f);
+#endif
+          incdep_freeit (cur);
+          cur = next;
+        }
+
+      incdep_lock ();
+    } /* outer loop */
+  incdep_unlock ();
+}
+
+
+/* splits up a list of file names and feeds it to eval_include_dep_file,
+   employing threads to try speed up the file reading. */
+void
+eval_include_dep (const char *names, floc *f, enum incdep_op op)
+{
+  struct incdep *head = 0;
+  struct incdep *tail = 0;
+  struct incdep *cur;
+  const char *names_iterator = names;
+  const char *name;
+  unsigned int name_len;
+
+  /* loop through NAMES, creating a todo list out of them. */
+
+  while ((name = find_next_token (&names_iterator, &name_len)) != 0)
+    {
+#ifdef INCDEP_USE_KFSCACHE
+       KFSLOOKUPERROR enmError;
+       PKFSOBJ pFileObj = kFsCacheLookupWithLengthA (g_pFsCache, name, name_len, &enmError);
+       if (!pFileObj)
+         continue;
+       if (pFileObj->bObjType != KFSOBJ_TYPE_FILE)
+         {
+           kFsCacheObjRelease (g_pFsCache, pFileObj);
+           continue;
+         }
+
+       cur = xmalloc (sizeof (*cur));            /* not incdep_xmalloc here */
+       cur->pFileObj = pFileObj;
+#else
+       cur = xmalloc (sizeof (*cur) + name_len); /* not incdep_xmalloc here */
+       memcpy (cur->name, name, name_len);
+       cur->name[name_len] = '\0';
+#endif
+
+       cur->file_base = cur->file_end = NULL;
+       cur->worker_tid = -1;
+#ifdef PARSE_IN_WORKER
+       cur->err_line_no = 0;
+       cur->err_msg = NULL;
+       cur->recorded_variables_in_set_head = NULL;
+       cur->recorded_variables_in_set_tail = NULL;
+       cur->recorded_variable_defs_head = NULL;
+       cur->recorded_variable_defs_tail = NULL;
+       cur->recorded_file_head = NULL;
+       cur->recorded_file_tail = NULL;
+#endif
+
+       cur->next = NULL;
+       if (tail)
+         tail->next = cur;
+       else
+         head = cur;
+       tail = cur;
+    }
+
+#ifdef ELECTRIC_HEAP
+  if (1)
+#else
+  if (op == incdep_read_it)
+#endif
+    {
+      /* work our way thru the files directly */
+
+      cur = head;
+      while (cur)
+        {
+          struct incdep *next = cur->next;
+          incdep_read_file (cur, f);
+          eval_include_dep_file (cur, f);
+          incdep_freeit (cur);
+          cur = next;
+        }
+    }
+  else
+    {
+      /* initialize the worker threads and related stuff the first time around. */
+
+      if (!incdep_initialized)
+        incdep_init (f);
+
+      /* queue the files and notify the worker threads. */
+
+      incdep_lock ();
+
+      if (incdep_tail_todo)
+        incdep_tail_todo->next = head;
+      else
+        incdep_head_todo = head;
+      incdep_tail_todo = tail;
+
+      incdep_signal_todo ();
+      incdep_unlock ();
+
+      /* flush the todo queue if we're requested to do so. */
+
+      if (op == incdep_flush)
+        incdep_flush_it (f);
+    }
+}
+
+#endif /* CONFIG_WITH_INCLUDEDEP */
+
diff --git a/src/kmk/inlined_memchr.h b/src/kmk/inlined_memchr.h
new file mode 100644
index 0000000..9666635
--- /dev/null
+++ b/src/kmk/inlined_memchr.h
@@ -0,0 +1,162 @@
+#define _GNU_SOURCE 1
+#include <string.h>
+
+#ifdef _MSC_VER
+_inline void *
+#else
+static __inline__ void *
+#endif
+my_inline_memchr(const void *pv, int ch, register size_t cb)
+{
+    register const unsigned int   uch = (unsigned)ch;
+    register const unsigned char *pb = (const unsigned char *)pv;
+#if 0 /* 8-byte loop unroll */
+    while (cb >= 8)
+    {
+        if (*pb == uch)
+            return (unsigned char *)pb;
+        if (pb[1] == uch)
+            return (unsigned char *)pb + 1;
+        if (pb[2] == uch)
+            return (unsigned char *)pb + 2;
+        if (pb[3] == uch)
+            return (unsigned char *)pb + 3;
+        if (pb[4] == uch)
+            return (unsigned char *)pb + 4;
+        if (pb[5] == uch)
+            return (unsigned char *)pb + 5;
+        if (pb[6] == uch)
+            return (unsigned char *)pb + 6;
+        if (pb[7] == uch)
+            return (unsigned char *)pb + 7;
+        cb -= 8;
+        pb += 8;
+    }
+    switch (cb & 7)
+    {
+        case 0:
+            break;
+        case 1:
+            if (*pb == uch)
+                return (unsigned char *)pb;
+            break;
+        case 2:
+            if (*pb == uch)
+                return (unsigned char *)pb;
+            if (pb[1] == uch)
+                return (unsigned char *)pb + 1;
+            break;
+        case 3:
+            if (*pb == uch)
+                return (unsigned char *)pb;
+            if (pb[1] == uch)
+                return (unsigned char *)pb + 1;
+            if (pb[2] == uch)
+                return (unsigned char *)pb + 2;
+            break;
+        case 4:
+            if (*pb == uch)
+                return (unsigned char *)pb;
+            if (pb[1] == uch)
+                return (unsigned char *)pb + 1;
+            if (pb[2] == uch)
+                return (unsigned char *)pb + 2;
+            if (pb[3] == uch)
+                return (unsigned char *)pb + 3;
+            break;
+        case 5:
+            if (*pb == uch)
+                return (unsigned char *)pb;
+            if (pb[1] == uch)
+                return (unsigned char *)pb + 1;
+            if (pb[2] == uch)
+                return (unsigned char *)pb + 2;
+            if (pb[3] == uch)
+                return (unsigned char *)pb + 3;
+            if (pb[4] == uch)
+                return (unsigned char *)pb + 4;
+            break;
+        case 6:
+            if (*pb == uch)
+                return (unsigned char *)pb;
+            if (pb[1] == uch)
+                return (unsigned char *)pb + 1;
+            if (pb[2] == uch)
+                return (unsigned char *)pb + 2;
+            if (pb[3] == uch)
+                return (unsigned char *)pb + 3;
+            if (pb[4] == uch)
+                return (unsigned char *)pb + 4;
+            if (pb[5] == uch)
+                return (unsigned char *)pb + 5;
+            break;
+        case 7:
+            if (*pb == uch)
+                return (unsigned char *)pb;
+            if (pb[1] == uch)
+                return (unsigned char *)pb + 1;
+            if (pb[2] == uch)
+                return (unsigned char *)pb + 2;
+            if (pb[3] == uch)
+                return (unsigned char *)pb + 3;
+            if (pb[4] == uch)
+                return (unsigned char *)pb + 4;
+            if (pb[5] == uch)
+                return (unsigned char *)pb + 5;
+            if (pb[6] == uch)
+                return (unsigned char *)pb + 6;
+            break;
+    }
+
+#elif 1 /* 4 byte loop unroll */
+    while (cb >= 4)
+    {
+        if (*pb == uch)
+            return (unsigned char *)pb;
+        if (pb[1] == uch)
+            return (unsigned char *)pb + 1;
+        if (pb[2] == uch)
+            return (unsigned char *)pb + 2;
+        if (pb[3] == uch)
+            return (unsigned char *)pb + 3;
+        cb -= 4;
+        pb += 4;
+    }
+    switch (cb & 3)
+    {
+        case 0:
+            break;
+        case 1:
+            if (*pb == uch)
+                return (unsigned char *)pb;
+            break;
+        case 2:
+            if (*pb == uch)
+                return (unsigned char *)pb;
+            if (pb[1] == uch)
+                return (unsigned char *)pb + 1;
+            break;
+        case 3:
+            if (*pb == uch)
+                return (unsigned char *)pb;
+            if (pb[1] == uch)
+                return (unsigned char *)pb + 1;
+            if (pb[2] == uch)
+                return (unsigned char *)pb + 2;
+            break;
+    }
+
+#else /* the basic loop */
+    while (cb > 0)
+    {
+        if (*pb == uch)
+            return (void *)pb;
+        cb--;
+        pb++;
+    }
+#endif
+    return 0;
+}
+
+#define memchr my_inline_memchr
+
diff --git a/src/kmk/job.c b/src/kmk/job.c
new file mode 100644
index 0000000..12d2ad3
--- /dev/null
+++ b/src/kmk/job.c
@@ -0,0 +1,3991 @@
+/* Job execution and handling for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <assert.h>
+
+#include "job.h"
+#include "debug.h"
+#include "filedef.h"
+#include "commands.h"
+#include "variable.h"
+#include "os.h"
+#ifdef CONFIG_WITH_KMK_BUILTIN
+# include "kmkbuiltin.h"
+#endif
+#ifdef KMK
+# include "kbuild.h"
+#endif
+
+
+#include <string.h>
+
+/* Default shell to use.  */
+#ifdef WINDOWS32
+#include <windows.h>
+
+const char *default_shell = "sh.exe";
+int no_default_sh_exe = 1;
+int batch_mode_shell = 1;
+# ifndef CONFIG_NEW_WIN32_CTRL_EVENT
+HANDLE main_thread;
+# endif
+
+#elif defined (_AMIGA)
+
+const char *default_shell = "";
+extern int MyExecute (char **);
+int batch_mode_shell = 0;
+
+#elif defined (__MSDOS__)
+
+/* The default shell is a pointer so we can change it if Makefile
+   says so.  It is without an explicit path so we get a chance
+   to search the $PATH for it (since MSDOS doesn't have standard
+   directories we could trust).  */
+const char *default_shell = "command.com";
+int batch_mode_shell = 0;
+
+#elif defined (__EMX__)
+
+const char *default_shell = "sh.exe"; /* bird changed this from "/bin/sh" as that doesn't make sense on OS/2. */
+int batch_mode_shell = 0;
+
+#elif defined (VMS)
+
+# include <descrip.h>
+# include <stsdef.h>
+const char *default_shell = "";
+int batch_mode_shell = 0;
+
+#define strsignal vms_strsignal
+char * vms_strsignal (int status);
+
+#ifndef C_FACILITY_NO
+# define C_FACILITY_NO 0x350000
+#endif
+#ifndef VMS_POSIX_EXIT_MASK
+# define VMS_POSIX_EXIT_MASK (C_FACILITY_NO | 0xA000)
+#endif
+
+#else
+
+const char *default_shell = "/bin/sh";
+int batch_mode_shell = 0;
+
+#endif
+
+#ifdef __MSDOS__
+# include <process.h>
+static int execute_by_shell;
+static int dos_pid = 123;
+int dos_status;
+int dos_command_running;
+#endif /* __MSDOS__ */
+
+#ifdef _AMIGA
+# include <proto/dos.h>
+static int amiga_pid = 123;
+static int amiga_status;
+static char amiga_bname[32];
+static int amiga_batch_file;
+#endif /* Amiga.  */
+
+#ifdef VMS
+# ifndef __GNUC__
+#   include <processes.h>
+# endif
+# include <starlet.h>
+# include <lib$routines.h>
+static void vmsWaitForChildren (int *);
+#endif
+
+#ifdef WINDOWS32
+# include <windows.h>
+# include <io.h>
+# include <process.h>
+# ifdef CONFIG_NEW_WIN_CHILDREN
+#  include "w32/winchildren.h"
+# else
+#  include "sub_proc.h"
+# endif
+# include "w32err.h"
+# include "pathstuff.h"
+# define WAIT_NOHANG 1
+#endif /* WINDOWS32 */
+
+#ifdef __EMX__
+# include <process.h>
+#endif
+
+#if defined (HAVE_SYS_WAIT_H) || defined (HAVE_UNION_WAIT)
+# include <sys/wait.h>
+#endif
+
+#ifdef HAVE_WAITPID
+# define WAIT_NOHANG(status)    waitpid (-1, (status), WNOHANG)
+#else   /* Don't have waitpid.  */
+# ifdef HAVE_WAIT3
+#  ifndef wait3
+extern int wait3 ();
+#  endif
+#  define WAIT_NOHANG(status)   wait3 ((status), WNOHANG, (struct rusage *) 0)
+# endif /* Have wait3.  */
+#endif /* Have waitpid.  */
+
+#if !defined (wait) && !defined (POSIX)
+int wait ();
+#endif
+
+#ifndef HAVE_UNION_WAIT
+
+# define WAIT_T int
+
+# ifndef WTERMSIG
+#  define WTERMSIG(x) ((x) & 0x7f)
+# endif
+# ifndef WCOREDUMP
+#  define WCOREDUMP(x) ((x) & 0x80)
+# endif
+# ifndef WEXITSTATUS
+#  define WEXITSTATUS(x) (((x) >> 8) & 0xff)
+# endif
+# ifndef WIFSIGNALED
+#  define WIFSIGNALED(x) (WTERMSIG (x) != 0)
+# endif
+# ifndef WIFEXITED
+#  define WIFEXITED(x) (WTERMSIG (x) == 0)
+# endif
+
+#else   /* Have 'union wait'.  */
+
+# define WAIT_T union wait
+# ifndef WTERMSIG
+#  define WTERMSIG(x) ((x).w_termsig)
+# endif
+# ifndef WCOREDUMP
+#  define WCOREDUMP(x) ((x).w_coredump)
+# endif
+# ifndef WEXITSTATUS
+#  define WEXITSTATUS(x) ((x).w_retcode)
+# endif
+# ifndef WIFSIGNALED
+#  define WIFSIGNALED(x) (WTERMSIG(x) != 0)
+# endif
+# ifndef WIFEXITED
+#  define WIFEXITED(x) (WTERMSIG(x) == 0)
+# endif
+
+#endif  /* Don't have 'union wait'.  */
+
+#if !defined(HAVE_UNISTD_H) && !defined(WINDOWS32)
+# ifndef _MSC_VER /* bird */
+int dup2 ();
+int execve ();
+void _exit ();
+# endif /* bird */
+# ifndef VMS
+int geteuid ();
+int getegid ();
+int setgid ();
+int getgid ();
+# endif
+#endif
+
+/* Different systems have different requirements for pid_t.
+   Plus we have to support gettext string translation... Argh.  */
+static const char *
+pid2str (pid_t pid)
+{
+  static char pidstring[100];
+#if defined(WINDOWS32) && (__GNUC__ > 3 || _MSC_VER > 1300)
+  /* %Id is only needed for 64-builds, which were not supported by
+      older versions of Windows compilers.  */
+  sprintf (pidstring, "%Id", pid);
+#else
+  sprintf (pidstring, "%lu", (unsigned long) pid);
+#endif
+  return pidstring;
+}
+
+#ifndef HAVE_GETLOADAVG
+int getloadavg (double loadavg[], int nelem);
+#endif
+
+static void free_child (struct child *);
+static void start_job_command (struct child *child);
+static int load_too_high (void);
+static int job_next_command (struct child *);
+static int start_waiting_job (struct child *);
+#ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+static void print_job_time (struct child *);
+#endif
+
+/* Chain of all live (or recently deceased) children.  */
+
+struct child *children = 0;
+
+/* Number of children currently running.  */
+
+unsigned int job_slots_used = 0;
+
+/* Nonzero if the 'good' standard input is in use.  */
+
+static int good_stdin_used = 0;
+
+/* Chain of children waiting to run until the load average goes down.  */
+
+static struct child *waiting_jobs = 0;
+
+/* Non-zero if we use a *real* shell (always so on Unix).  */
+
+int unixy_shell = 1;
+
+/* Number of jobs started in the current second.  */
+
+unsigned long job_counter = 0;
+
+/* Number of jobserver tokens this instance is currently using.  */
+
+unsigned int jobserver_tokens = 0;
+
+
+#ifdef WINDOWS32
+# ifndef CONFIG_NEW_WIN_CHILDREN /* (only used by commands.c) */
+/*
+ * The macro which references this function is defined in makeint.h.
+ */
+int
+w32_kill (pid_t pid, int sig)
+{
+  return ((process_kill ((HANDLE)pid, sig) == TRUE) ? 0 : -1);
+}
+# endif /* !CONFIG_NEW_WIN_CHILDREN */
+
+/* This function creates a temporary file name with an extension specified
+ * by the unixy arg.
+ * Return an xmalloc'ed string of a newly created temp file and its
+ * file descriptor, or die.  */
+static char *
+create_batch_file (char const *base, int unixy, int *fd)
+{
+  const char *const ext = unixy ? "sh" : "bat";
+  const char *error_string = NULL;
+  char temp_path[MAXPATHLEN]; /* need to know its length */
+  unsigned path_size = GetTempPath (sizeof temp_path, temp_path);
+  int path_is_dot = 0;
+  /* The following variable is static so we won't try to reuse a name
+     that was generated a little while ago, because that file might
+     not be on disk yet, since we use FILE_ATTRIBUTE_TEMPORARY below,
+     which tells the OS it doesn't need to flush the cache to disk.
+     If the file is not yet on disk, we might think the name is
+     available, while it really isn't.  This happens in parallel
+     builds, where Make doesn't wait for one job to finish before it
+     launches the next one.  */
+  static unsigned uniq = 0;
+  static int second_loop = 0;
+  const unsigned sizemax = strlen (base) + strlen (ext) + 10;
+
+  if (path_size == 0)
+    {
+      path_size = GetCurrentDirectory (sizeof temp_path, temp_path);
+      path_is_dot = 1;
+    }
+
+  ++uniq;
+  if (uniq >= 0x10000 && !second_loop)
+    {
+      /* If we already had 64K batch files in this
+         process, make a second loop through the numbers,
+         looking for free slots, i.e. files that were
+         deleted in the meantime.  */
+      second_loop = 1;
+      uniq = 1;
+    }
+  while (path_size > 0 &&
+         path_size + sizemax < sizeof temp_path &&
+         !(uniq >= 0x10000 && second_loop))
+    {
+      unsigned size = sprintf (temp_path + path_size,
+                               "%s%s-%x.%s",
+                               temp_path[path_size - 1] == '\\' ? "" : "\\",
+                               base, uniq, ext);
+      HANDLE h = CreateFile (temp_path,  /* file name */
+                             GENERIC_READ | GENERIC_WRITE, /* desired access */
+                             0,                            /* no share mode */
+                             NULL,                         /* default security attributes */
+                             CREATE_NEW,                   /* creation disposition */
+                             FILE_ATTRIBUTE_NORMAL |       /* flags and attributes */
+                             FILE_ATTRIBUTE_TEMPORARY,     /* we'll delete it */
+                             NULL);                        /* no template file */
+
+      if (h == INVALID_HANDLE_VALUE)
+        {
+          const DWORD er = GetLastError ();
+
+          if (er == ERROR_FILE_EXISTS || er == ERROR_ALREADY_EXISTS)
+            {
+              ++uniq;
+              if (uniq == 0x10000 && !second_loop)
+                {
+                  second_loop = 1;
+                  uniq = 1;
+                }
+            }
+
+          /* the temporary path is not guaranteed to exist */
+          else if (path_is_dot == 0)
+            {
+              path_size = GetCurrentDirectory (sizeof temp_path, temp_path);
+              path_is_dot = 1;
+            }
+
+          else
+            {
+              error_string = map_windows32_error_to_string (er);
+              break;
+            }
+        }
+      else
+        {
+          const unsigned final_size = path_size + size + 1;
+          char *const path = xmalloc (final_size);
+          memcpy (path, temp_path, final_size);
+          *fd = _open_osfhandle ((intptr_t)h, 0);
+          if (unixy)
+            {
+              char *p;
+              int ch;
+              for (p = path; (ch = *p) != 0; ++p)
+                if (ch == '\\')
+                  *p = '/';
+            }
+          return path; /* good return */
+        }
+    }
+
+  *fd = -1;
+  if (error_string == NULL)
+    error_string = _("Cannot create a temporary file\n");
+  O (fatal, NILF, error_string);
+
+  /* not reached */
+  return NULL;
+}
+#endif /* WINDOWS32 */
+
+#ifdef __EMX__
+/* returns whether path is assumed to be a unix like shell. */
+int
+_is_unixy_shell (const char *path)
+{
+  /* list of non unix shells */
+  const char *known_os2shells[] = {
+    "cmd.exe",
+    "cmd",
+    "4os2.exe",
+    "4os2",
+    "4dos.exe",
+    "4dos",
+    "command.com",
+    "command",
+    NULL
+  };
+
+  /* find the rightmost '/' or '\\' */
+  const char *name = strrchr (path, '/');
+  const char *p = strrchr (path, '\\');
+  unsigned i;
+
+  if (name && p)    /* take the max */
+    name = (name > p) ? name : p;
+  else if (p)       /* name must be 0 */
+    name = p;
+  else if (!name)   /* name and p must be 0 */
+    name = path;
+
+  if (*name == '/' || *name == '\\') name++;
+
+  i = 0;
+  while (known_os2shells[i] != NULL)
+    {
+      if (strcasecmp (name, known_os2shells[i]) == 0)
+        return 0; /* not a unix shell */
+      i++;
+    }
+
+  /* in doubt assume a unix like shell */
+  return 1;
+}
+#endif /* __EMX__ */
+
+/* determines whether path looks to be a Bourne-like shell. */
+int
+is_bourne_compatible_shell (const char *path)
+{
+  /* List of known POSIX (or POSIX-ish) shells.  */
+  static const char *unix_shells[] = {
+    "sh",
+    "bash",
+    "ksh",
+    "rksh",
+    "zsh",
+    "ash",
+    "dash",
+    NULL
+  };
+  const char **s;
+
+  /* find the rightmost '/' or '\\' */
+  const char *name = strrchr (path, '/');
+  char *p = strrchr (path, '\\');
+
+  if (name && p)    /* take the max */
+    name = (name > p) ? name : p;
+  else if (p)       /* name must be 0 */
+    name = p;
+  else if (!name)   /* name and p must be 0 */
+    name = path;
+
+  if (*name == '/' || *name == '\\')
+    ++name;
+
+  /* this should be able to deal with extensions on Windows-like systems */
+  for (s = unix_shells; *s != NULL; ++s)
+    {
+#if defined(WINDOWS32) || defined(__MSDOS__)
+      unsigned int len = strlen (*s);
+      if ((strlen (name) >= len && STOP_SET (name[len], MAP_DOT|MAP_NUL))
+          && strncasecmp (name, *s, len) == 0)
+#else
+      if (strcmp (name, *s) == 0)
+#endif
+        return 1; /* a known unix-style shell */
+    }
+
+  /* if not on the list, assume it's not a Bourne-like shell */
+  return 0;
+}
+
+
+/* Write an error message describing the exit status given in
+   EXIT_CODE, EXIT_SIG, and COREDUMP, for the target TARGET_NAME.
+   Append "(ignored)" if IGNORED is nonzero.  */
+
+static void
+child_error (struct child *child,
+             int exit_code, int exit_sig, int coredump, int ignored)
+{
+  const char *pre = "*** ";
+  const char *post = "";
+  const char *dump = "";
+  const struct file *f = child->file;
+  const floc *flocp = &f->cmds->fileinfo;
+  const char *nm;
+  size_t l;
+
+  if (ignored && silent_flag)
+    return;
+
+  if (exit_sig && coredump)
+    dump = _(" (core dumped)");
+
+  if (ignored)
+    {
+      pre = "";
+      post = _(" (ignored)");
+    }
+
+  if (! flocp->filenm)
+    nm = _("<builtin>");
+  else
+    {
+      char *a = alloca (strlen (flocp->filenm) + 1 + 11 + 1);
+      sprintf (a, "%s:%lu", flocp->filenm, flocp->lineno + flocp->offset);
+      nm = a;
+    }
+
+  l = strlen (pre) + strlen (nm) + strlen (f->name) + strlen (post);
+
+  OUTPUT_SET (&child->output);
+
+  show_goal_error ();
+
+  if (exit_sig == 0)
+# if defined(KMK) && defined(KBUILD_OS_WINDOWS)
+    {
+      const char *exit_name = NULL;
+      switch ((unsigned)exit_code)
+        {
+        case 0xc0000005U: exit_name = "STATUS_ACCESS_VIOLATION"; break;
+        case 0xc000013aU: exit_name = "STATUS_CONTROL_C_EXIT"; break;
+        case 0xc0000374U: exit_name = "STATUS_HEAP_CORRUPTION"; break;
+        case 0xc0000409U: exit_name = "STATUS_STACK_BUFFER_OVERRUN"; break;
+        case 0xc0000417U: exit_name = "STATUS_INVALID_CRUNTIME_PARAMETER"; break;
+        case 0x80000003U: exit_name = "STATUS_BREAKPOINT"; break;
+        case 0x40000015U: exit_name = "STATUS_FATAL_APP_EXIT"; break;
+        case 0x40010004U: exit_name = "DBG_TERMINATE_PROCESS"; break;
+        case 0x40010005U: exit_name = "DBG_CONTROL_C"; break;
+        case 0x40010008U: exit_name = "DBG_CONTROL_BREAK"; break;
+        }
+      if (exit_name)
+        error (NILF, l + strlen (exit_name) + INTSTR_LENGTH,
+               _("%s[%s: %s] Error %d (%s)%s"),
+               pre, nm, f->name, exit_code, exit_name, post);
+      else
+        error (NILF, l + INTSTR_LENGTH + INTSTR_LENGTH,
+               _("%s[%s: %s] Error %d (%#x)%s"),
+               pre, nm, f->name, exit_code, exit_code, post);
+    }
+# else
+    error (NILF, l + INTSTR_LENGTH,
+           _("%s[%s: %s] Error %d%s"), pre, nm, f->name, exit_code, post);
+# endif
+  else
+    {
+      const char *s = strsignal (exit_sig);
+      error (NILF, l + strlen (s) + strlen (dump),
+             "%s[%s: %s] %s%s%s", pre, nm, f->name, s, dump, post);
+    }
+
+  OUTPUT_UNSET ();
+}
+
+
+/* Handle a dead child.  This handler may or may not ever be installed.
+
+   If we're using the jobserver feature without pselect(), we need it.
+   First, installing it ensures the read will interrupt on SIGCHLD.  Second,
+   we close the dup'd read FD to ensure we don't enter another blocking read
+   without reaping all the dead children.  In this case we don't need the
+   dead_children count.
+
+   If we don't have either waitpid or wait3, then make is unreliable, but we
+   use the dead_children count to reap children as best we can.  */
+
+static unsigned int dead_children = 0;
+
+RETSIGTYPE
+child_handler (int sig UNUSED)
+{
+  ++dead_children;
+
+  jobserver_signal ();
+
+#if defined __EMX__ && !defined(__INNOTEK_LIBC__) /* bird */
+  /* The signal handler must called only once! */
+  signal (SIGCHLD, SIG_DFL);
+#endif
+}
+
+extern pid_t shell_function_pid;
+
+/* Reap all dead children, storing the returned status and the new command
+   state ('cs_finished') in the 'file' member of the 'struct child' for the
+   dead child, and removing the child from the chain.  In addition, if BLOCK
+   nonzero, we block in this function until we've reaped at least one
+   complete child, waiting for it to die if necessary.  If ERR is nonzero,
+   print an error message first.  */
+
+void
+reap_children (int block, int err)
+{
+#ifndef WINDOWS32
+  WAIT_T status;
+#endif
+  /* Initially, assume we have some.  */
+  int reap_more = 1;
+
+#ifdef WAIT_NOHANG
+# define REAP_MORE reap_more
+#else
+# define REAP_MORE dead_children
+#endif
+
+  /* As long as:
+
+       We have at least one child outstanding OR a shell function in progress,
+         AND
+       We're blocking for a complete child OR there are more children to reap
+
+     we'll keep reaping children.  */
+
+  while ((children != 0 || shell_function_pid != 0)
+         && (block || REAP_MORE))
+    {
+      unsigned int remote = 0;
+      pid_t pid;
+      int exit_code, exit_sig, coredump;
+      struct child *lastc, *c;
+      int child_failed;
+      int any_remote, any_local;
+      int dontcare;
+#ifdef CONFIG_WITH_KMK_BUILTIN
+      struct child *completed_child = NULL;
+#endif
+
+      if (err && block)
+        {
+          static int printed = 0;
+
+          /* We might block for a while, so let the user know why.
+             Only print this message once no matter how many jobs are left.  */
+          fflush (stdout);
+          if (!printed)
+            O (error, NILF, _("*** Waiting for unfinished jobs...."));
+          printed = 1;
+        }
+
+      /* We have one less dead child to reap.  As noted in
+         child_handler() above, this count is completely unimportant for
+         all modern, POSIX-y systems that support wait3() or waitpid().
+         The rest of this comment below applies only to early, broken
+         pre-POSIX systems.  We keep the count only because... it's there...
+
+         The test and decrement are not atomic; if it is compiled into:
+                register = dead_children - 1;
+                dead_children = register;
+         a SIGCHLD could come between the two instructions.
+         child_handler increments dead_children.
+         The second instruction here would lose that increment.  But the
+         only effect of dead_children being wrong is that we might wait
+         longer than necessary to reap a child, and lose some parallelism;
+         and we might print the "Waiting for unfinished jobs" message above
+         when not necessary.  */
+
+      if (dead_children > 0)
+        --dead_children;
+
+      any_remote = 0;
+      any_local = shell_function_pid != 0;
+      for (c = children; c != 0; c = c->next)
+        {
+          any_remote |= c->remote;
+          any_local |= ! c->remote;
+#ifdef CONFIG_WITH_KMK_BUILTIN
+          if (c->has_status)
+            {
+              completed_child = c;
+              DB (DB_JOBS, (_("builtin child %p (%s) PID %s %s Status %ld\n"),
+                            (void *)c, c->file->name,
+                            pid2str (c->pid), c->remote ? _(" (remote)") : "",
+                            (long) c->status));
+            }
+          else
+#endif
+            DB (DB_JOBS, (_("Live child %p (%s) PID %s %s\n"),
+                          (void *)c, c->file->name, pid2str (c->pid),
+                          c->remote ? _(" (remote)") : ""));
+#ifdef VMS
+          break;
+#endif
+        }
+
+      /* First, check for remote children.  */
+      if (any_remote)
+        pid = remote_status (&exit_code, &exit_sig, &coredump, 0);
+      else
+        pid = 0;
+
+      if (pid > 0)
+        /* We got a remote child.  */
+        remote = 1;
+      else if (pid < 0)
+        {
+          /* A remote status command failed miserably.  Punt.  */
+        remote_status_lose:
+          pfatal_with_name ("remote_status");
+        }
+      else
+        {
+          /* No remote children.  Check for local children.  */
+#ifdef CONFIG_WITH_KMK_BUILTIN
+          if (completed_child)
+            {
+              pid = completed_child->pid;
+# if defined(WINDOWS32)
+              exit_code = completed_child->status;
+              exit_sig = 0;
+              coredump = 0;
+# else
+              status = (WAIT_T)completed_child->status;
+# endif
+            }
+          else
+#endif /* CONFIG_WITH_KMK_BUILTIN */
+#if !defined(__MSDOS__) && !defined(_AMIGA) && !defined(WINDOWS32)
+          if (any_local)
+            {
+#ifdef VMS
+              /* Todo: This needs more untangling multi-process support */
+              /* Just do single child process support now */
+              vmsWaitForChildren (&status);
+              pid = c->pid;
+
+              /* VMS failure status can not be fully translated */
+              status = $VMS_STATUS_SUCCESS (c->cstatus) ? 0 : (1 << 8);
+
+              /* A Posix failure can be exactly translated */
+              if ((c->cstatus & VMS_POSIX_EXIT_MASK) == VMS_POSIX_EXIT_MASK)
+                status = (c->cstatus >> 3 & 255) << 8;
+#else
+#ifdef WAIT_NOHANG
+              if (!block)
+                pid = WAIT_NOHANG (&status);
+              else
+#endif
+                EINTRLOOP (pid, wait (&status));
+#endif /* !VMS */
+            }
+          else
+            pid = 0;
+
+          if (pid < 0)
+            {
+              /* The wait*() failed miserably.  Punt.  */
+              pfatal_with_name ("wait");
+            }
+          else if (pid > 0)
+            {
+              /* We got a child exit; chop the status word up.  */
+              exit_code = WEXITSTATUS (status);
+              exit_sig = WIFSIGNALED (status) ? WTERMSIG (status) : 0;
+              coredump = WCOREDUMP (status);
+
+              /* If we have started jobs in this second, remove one.  */
+              if (job_counter)
+                --job_counter;
+            }
+          else
+            {
+              /* No local children are dead.  */
+              reap_more = 0;
+
+              if (!block || !any_remote)
+                break;
+
+              /* Now try a blocking wait for a remote child.  */
+              pid = remote_status (&exit_code, &exit_sig, &coredump, 1);
+              if (pid < 0)
+                goto remote_status_lose;
+              else if (pid == 0)
+                /* No remote children either.  Finally give up.  */
+                break;
+
+              /* We got a remote child.  */
+              remote = 1;
+            }
+#endif /* !__MSDOS__, !Amiga, !WINDOWS32.  */
+
+#ifdef __MSDOS__
+          /* Life is very different on MSDOS.  */
+          pid = dos_pid - 1;
+          status = dos_status;
+          exit_code = WEXITSTATUS (status);
+          if (exit_code == 0xff)
+            exit_code = -1;
+          exit_sig = WIFSIGNALED (status) ? WTERMSIG (status) : 0;
+          coredump = 0;
+#endif /* __MSDOS__ */
+#ifdef _AMIGA
+          /* Same on Amiga */
+          pid = amiga_pid - 1;
+          status = amiga_status;
+          exit_code = amiga_status;
+          exit_sig = 0;
+          coredump = 0;
+#endif /* _AMIGA */
+#ifdef WINDOWS32
+          {
+# ifndef CONFIG_NEW_WIN_CHILDREN
+            HANDLE hPID;
+            HANDLE hcTID, hcPID;
+            DWORD dwWaitStatus = 0;
+            exit_code = 0;
+            exit_sig = 0;
+            coredump = 0;
+
+#  ifndef CONFIG_NEW_WIN32_CTRL_EVENT
+            /* Record the thread ID of the main process, so that we
+               could suspend it in the signal handler.  */
+            if (!main_thread)
+              {
+                hcTID = GetCurrentThread ();
+                hcPID = GetCurrentProcess ();
+                if (!DuplicateHandle (hcPID, hcTID, hcPID, &main_thread, 0,
+                                      FALSE, DUPLICATE_SAME_ACCESS))
+                  {
+                    DWORD e = GetLastError ();
+                    fprintf (stderr,
+                             "Determine main thread ID (Error %ld: %s)\n",
+                             e, map_windows32_error_to_string (e));
+                  }
+                else
+                  DB (DB_VERBOSE, ("Main thread handle = %p\n", main_thread));
+              }
+#  endif
+
+            /* wait for anything to finish */
+            hPID = process_wait_for_any (block, &dwWaitStatus);
+            if (hPID)
+              {
+                /* was an error found on this process? */
+                int werr = process_last_err (hPID);
+
+                /* get exit data */
+                exit_code = process_exit_code (hPID);
+
+                if (werr)
+                  fprintf (stderr, "make (e=%d): %s", exit_code,
+                           map_windows32_error_to_string (exit_code));
+
+                /* signal */
+                exit_sig = process_signal (hPID);
+
+                /* cleanup process */
+                process_cleanup (hPID);
+
+                coredump = 0;
+              }
+            else if (dwWaitStatus == WAIT_FAILED)
+              {
+                /* The WaitForMultipleObjects() failed miserably.  Punt.  */
+                pfatal_with_name ("WaitForMultipleObjects");
+              }
+            else if (dwWaitStatus == WAIT_TIMEOUT)
+              {
+                /* No child processes are finished.  Give up waiting. */
+                reap_more = 0;
+                break;
+              }
+
+            pid = (pid_t) hPID;
+# else  /* CONFIG_NEW_WIN_CHILDREN */
+#  ifndef CONFIG_NEW_WIN32_CTRL_EVENT
+            /* Ctrl-C handler needs to suspend the main thread handle to
+               prevent mayhem when concurrently calling reap_children.  */
+            if (   !main_thread
+                && !DuplicateHandle (GetCurrentProcess (), GetCurrentThread (),
+                                     GetCurrentProcess (), &main_thread, 0,
+                                     FALSE, DUPLICATE_SAME_ACCESS))
+              fprintf (stderr, "Failed to duplicate main thread handle: %u\n",
+                       GetLastError ());
+#  endif
+
+            assert (!any_remote);
+            pid = 0;
+            coredump = exit_sig = exit_code = 0;
+            {
+              int rc = MkWinChildWait(block, &pid, &exit_code, &exit_sig, &coredump, &c);
+              if (rc != 0)
+                    ON (fatal, NILF, _("MkWinChildWait: %u"), rc);
+            }
+            if (pid == 0)
+              {
+                /* No more children, stop. */
+                reap_more = 0;
+                break;
+              }
+
+            /* If we have started jobs in this second, remove one.  */
+            if (job_counter)
+              --job_counter;
+# endif /* CONFIG_NEW_WIN_CHILDREN */
+          }
+#endif /* WINDOWS32 */
+        }
+
+      /* Check if this is the child of the 'shell' function.  */
+      if (!remote && pid == shell_function_pid)
+        {
+          shell_completed (exit_code, exit_sig);
+          break;
+        }
+
+      /* Search for a child matching the deceased one.  */
+      lastc = 0;
+      for (c = children; c != 0; lastc = c, c = c->next)
+        if (c->pid == pid && c->remote == remote)
+          break;
+
+      if (c == 0)
+        /* An unknown child died.
+           Ignore it; it was inherited from our invoker.  */
+        continue;
+
+      /* Determine the failure status: 0 for success, 1 for updating target in
+         question mode, 2 for anything else.  */
+      if (exit_sig == 0 && exit_code == 0)
+        child_failed = MAKE_SUCCESS;
+      else if (exit_sig == 0 && exit_code == 1 && question_flag && c->recursive)
+        child_failed = MAKE_TROUBLE;
+      else
+        child_failed = MAKE_FAILURE;
+
+      DB (DB_JOBS, (child_failed
+                    ? _("Reaping losing child %p PID %s %s\n")
+                    : _("Reaping winning child %p PID %s %s\n"),
+                    (void *)c, pid2str (c->pid), c->remote ? _(" (remote)") : ""));
+
+      if (c->sh_batch_file)
+        {
+          int rm_status;
+
+          DB (DB_JOBS, (_("Cleaning up temp batch file %s\n"),
+                        c->sh_batch_file));
+
+          errno = 0;
+          rm_status = remove (c->sh_batch_file);
+          if (rm_status)
+            DB (DB_JOBS, (_("Cleaning up temp batch file %s failed (%d)\n"),
+                          c->sh_batch_file, errno));
+
+          /* all done with memory */
+          free (c->sh_batch_file);
+          c->sh_batch_file = NULL;
+        }
+
+      /* If this child had the good stdin, say it is now free.  */
+      if (c->good_stdin)
+        good_stdin_used = 0;
+
+      dontcare = c->dontcare;
+
+      if (child_failed && !c->noerror && !ignore_errors_flag)
+        {
+          /* The commands failed.  Write an error message,
+             delete non-precious targets, and abort.  */
+          static int delete_on_error = -1;
+
+          if (!dontcare && child_failed == MAKE_FAILURE)
+#ifdef KMK
+            {
+              child_error (c, exit_code, exit_sig, coredump, 0);
+              if (   (  c->file->cmds->lines_flags[c->command_line - 1]
+                      & (COMMANDS_SILENT | COMMANDS_RECURSE))
+                     == COMMANDS_SILENT
+# ifdef KBUILD_OS_WINDOWS /* show commands for NT statuses */
+                  || (exit_code & 0xc0000000)
+# endif
+                  || exit_sig != 0)
+                OS (message, 0, "The failing command:\n%s", c->file->cmds->command_lines[c->command_line - 1]);
+            }
+#else  /* !KMK */
+            child_error (c, exit_code, exit_sig, coredump, 0);
+#endif /* !KMK */
+
+          c->file->update_status = child_failed == MAKE_FAILURE ? us_failed : us_question;
+          if (delete_on_error == -1)
+            {
+              struct file *f = lookup_file (".DELETE_ON_ERROR");
+              delete_on_error = f != 0 && f->is_target;
+            }
+          if (exit_sig != 0 || delete_on_error)
+            delete_child_targets (c);
+        }
+      else
+        {
+          if (child_failed)
+            {
+              /* The commands failed, but we don't care.  */
+              child_error (c, exit_code, exit_sig, coredump, 1);
+              child_failed = 0;
+            }
+
+          /* If there are more commands to run, try to start them.  */
+          if (job_next_command (c))
+            {
+              if (handling_fatal_signal)
+                {
+                  /* Never start new commands while we are dying.
+                     Since there are more commands that wanted to be run,
+                     the target was not completely remade.  So we treat
+                     this as if a command had failed.  */
+                  c->file->update_status = us_failed;
+                }
+              else
+                {
+#ifndef NO_OUTPUT_SYNC
+                  /* If we're sync'ing per line, write the previous line's
+                     output before starting the next one.  */
+                  if (output_sync == OUTPUT_SYNC_LINE)
+                    output_dump (&c->output);
+#endif
+                  /* Check again whether to start remotely.
+                     Whether or not we want to changes over time.
+                     Also, start_remote_job may need state set up
+                     by start_remote_job_p.  */
+                  c->remote = start_remote_job_p (0);
+                  start_job_command (c);
+                  /* Fatal signals are left blocked in case we were
+                     about to put that child on the chain.  But it is
+                     already there, so it is safe for a fatal signal to
+                     arrive now; it will clean up this child's targets.  */
+                  unblock_sigs ();
+                  if (c->file->command_state == cs_running)
+                    /* We successfully started the new command.
+                       Loop to reap more children.  */
+                    continue;
+                }
+
+              if (c->file->update_status != us_success)
+                /* We failed to start the commands.  */
+                delete_child_targets (c);
+            }
+          else
+            /* There are no more commands.  We got through them all
+               without an unignored error.  Now the target has been
+               successfully updated.  */
+            c->file->update_status = us_success;
+        }
+
+      /* When we get here, all the commands for c->file are finished.  */
+
+#ifndef NO_OUTPUT_SYNC
+      /* Synchronize any remaining parallel output.  */
+# ifdef KMK
+      c->output.dont_truncate = !err && child_failed && !dontcare && !keep_going_flag && !handling_fatal_signal;
+# endif
+      output_dump (&c->output);
+#endif
+
+      /* At this point c->file->update_status is success or failed.  But
+         c->file->command_state is still cs_running if all the commands
+         ran; notice_finish_file looks for cs_running to tell it that
+         it's interesting to check the file's modtime again now.  */
+
+      if (! handling_fatal_signal)
+        /* Notice if the target of the commands has been changed.
+           This also propagates its values for command_state and
+           update_status to its also_make files.  */
+        notice_finished_file (c->file);
+
+      DB (DB_JOBS, (_("Removing child %p PID %s%s from chain.\n"),
+                    (void *)c, pid2str (c->pid), c->remote ? _(" (remote)") : ""));
+
+      /* Block fatal signals while frobnicating the list, so that
+         children and job_slots_used are always consistent.  Otherwise
+         a fatal signal arriving after the child is off the chain and
+         before job_slots_used is decremented would believe a child was
+         live and call reap_children again.  */
+      block_sigs ();
+
+      /* There is now another slot open.  */
+      if (job_slots_used > 0)
+        --job_slots_used;
+
+      /* Remove the child from the chain and free it.  */
+      if (lastc == 0)
+        children = c->next;
+      else
+        lastc->next = c->next;
+
+#ifdef KMK /* Repeat the error  */
+      /* If the job failed, and the -k flag was not given, die,
+         unless we are already in the process of dying.  */
+      if (!err && child_failed && !dontcare && !keep_going_flag &&
+          /* fatal_error_signal will die with the right signal.  */
+          !handling_fatal_signal)
+        {
+          unblock_sigs ();
+          die_with_job_output (child_failed, &c->output);
+        }
+#endif
+
+      free_child (c);
+
+      unblock_sigs ();
+
+#ifndef KMK /* See above. */
+      /* If the job failed, and the -k flag was not given, die,
+         unless we are already in the process of dying.  */
+      if (!err && child_failed && !dontcare && !keep_going_flag &&
+          /* fatal_error_signal will die with the right signal.  */
+          !handling_fatal_signal)
+        die (child_failed);
+#endif
+
+      /* Only block for one child.  */
+      block = 0;
+    }
+
+  return;
+}
+
+/* Free the storage allocated for CHILD.  */
+
+static void
+free_child (struct child *child)
+{
+#ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+  print_job_time (child);
+#endif
+  output_close (&child->output);
+
+  /* bird: Make sure the output_context doesn't point to a freed structure when
+           we return from this function.  This is probably an issue elsewhere
+           in the code, however it doesn't cost us much fixing it here.  (The
+           access after free was caught in a die() scenario, both in error
+           situations and successful ones.)  */
+  if (output_context == &child->output)
+    OUTPUT_UNSET();
+
+  if (!jobserver_tokens)
+    ONS (fatal, NILF, "INTERNAL: Freeing child %p (%s) but no tokens left!\n",
+         (void *)child, child->file->name);
+
+  /* If we're using the jobserver and this child is not the only outstanding
+     job, put a token back into the pipe for it.  */
+
+  if (jobserver_enabled () && jobserver_tokens > 1)
+    {
+      jobserver_release (1);
+      DB (DB_JOBS, (_("Released token for child %p (%s).\n"),
+                    (void *)child, child->file->name));
+    }
+
+  --jobserver_tokens;
+
+  if (handling_fatal_signal) /* Don't bother free'ing if about to die.  */
+    return;
+
+  if (child->command_lines != 0)
+    {
+      register unsigned int i;
+      for (i = 0; i < child->file->cmds->ncommand_lines; ++i)
+        free (child->command_lines[i]);
+      free (child->command_lines);
+    }
+
+  if (child->environment != 0)
+    {
+      register char **ep = child->environment;
+      while (*ep != 0)
+        free (*ep++);
+      free (child->environment);
+    }
+
+#ifdef CONFIG_WITH_MEMORY_OPTIMIZATIONS
+  /* Free the chopped command lines for simple targets when
+     there are no more active references to them.  */
+
+  child->file->cmds->refs--;
+  if (   !child->file->intermediate
+      && !child->file->pat_variables)
+    free_chopped_commands(child->file->cmds);
+#endif /* CONFIG_WITH_MEMORY_OPTIMIZATIONS */
+
+  free (child);
+}
+
+#ifdef POSIX
+extern sigset_t fatal_signal_set;
+#endif
+
+void
+block_sigs (void)
+{
+#ifdef POSIX
+  (void) sigprocmask (SIG_BLOCK, &fatal_signal_set, (sigset_t *) 0);
+#else
+# ifdef HAVE_SIGSETMASK
+  (void) sigblock (fatal_signal_mask);
+# endif
+#endif
+}
+
+#ifdef POSIX
+void
+unblock_sigs (void)
+{
+  sigset_t empty;
+  sigemptyset (&empty);
+  sigprocmask (SIG_SETMASK, &empty, (sigset_t *) 0);
+}
+#endif
+
+/* Start a job to run the commands specified in CHILD.
+   CHILD is updated to reflect the commands and ID of the child process.
+
+   NOTE: On return fatal signals are blocked!  The caller is responsible
+   for calling 'unblock_sigs', once the new child is safely on the chain so
+   it can be cleaned up in the event of a fatal signal.  */
+
+static void
+start_job_command (struct child *child)
+{
+  int flags;
+  char *p;
+#ifdef VMS
+  char *argv;
+#else
+  char **argv;
+#endif
+
+  /* If we have a completely empty commandset, stop now.  */
+  if (!child->command_ptr)
+    goto next_command;
+
+#ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+  if (child->start_ts == -1)
+    child->start_ts = nano_timestamp ();
+#endif
+
+  /* Combine the flags parsed for the line itself with
+     the flags specified globally for this target.  */
+  flags = (child->file->command_flags
+           | child->file->cmds->lines_flags[child->command_line - 1]);
+
+  p = child->command_ptr;
+  child->noerror = ((flags & COMMANDS_NOERROR) != 0);
+
+  while (*p != '\0')
+    {
+      if (*p == '@')
+        flags |= COMMANDS_SILENT;
+      else if (*p == '+')
+        flags |= COMMANDS_RECURSE;
+      else if (*p == '-')
+        child->noerror = 1;
+#ifdef CONFIG_WITH_COMMANDS_FUNC
+      else if (*p == '%')
+        flags |= COMMAND_GETTER_SKIP_IT;
+#endif
+      /* Don't skip newlines.  */
+      else if (!ISBLANK (*p))
+#ifndef CONFIG_WITH_KMK_BUILTIN
+        break;
+#else  /* CONFIG_WITH_KMK_BUILTIN */
+
+        {
+          if (   !(flags & COMMANDS_KMK_BUILTIN)
+              && !strncmp(p, "kmk_builtin_", sizeof("kmk_builtin_") - 1))
+            flags |= COMMANDS_KMK_BUILTIN;
+          break;
+        }
+#endif /* CONFIG_WITH_KMK_BUILTIN */
+      ++p;
+    }
+
+  child->recursive = ((flags & COMMANDS_RECURSE) != 0);
+
+  /* Update the file's command flags with any new ones we found.  We only
+     keep the COMMANDS_RECURSE setting.  Even this isn't 100% correct; we are
+     now marking more commands recursive than should be in the case of
+     multiline define/endef scripts where only one line is marked "+".  In
+     order to really fix this, we'll have to keep a lines_flags for every
+     actual line, after expansion.  */
+  child->file->cmds->lines_flags[child->command_line - 1] |= flags & COMMANDS_RECURSE;
+
+  /* POSIX requires that a recipe prefix after a backslash-newline should
+     be ignored.  Remove it now so the output is correct.  */
+  {
+    char prefix = child->file->cmds->recipe_prefix;
+    char *p1, *p2;
+    p1 = p2 = p;
+    while (*p1 != '\0')
+      {
+        *(p2++) = *p1;
+        if (p1[0] == '\n' && p1[1] == prefix)
+          ++p1;
+        ++p1;
+      }
+    *p2 = *p1;
+  }
+
+  /* Figure out an argument list from this command line.  */
+  {
+    char *end = 0;
+#ifdef VMS
+    /* Skip any leading whitespace */
+    while (*p)
+      {
+        if (!ISSPACE (*p))
+          {
+            if (*p != '\\')
+              break;
+            if ((p[1] != '\n') && (p[1] != 'n') && (p[1] != 't'))
+              break;
+          }
+        p++;
+      }
+
+    argv = p;
+    /* Although construct_command_argv contains some code for VMS, it was/is
+       not called/used.  Please note, for VMS argv is a string (not an array
+       of strings) which contains the complete command line, which for
+       multi-line variables still includes the newlines.  So detect newlines
+       and set 'end' (which is used for child->command_ptr) instead of
+       (re-)writing construct_command_argv */
+    if (!one_shell)
+      {
+        char *s = p;
+        int instring = 0;
+        while (*s)
+          {
+            if (*s == '"')
+              instring = !instring;
+            else if (*s == '\\' && !instring && *(s+1) != 0)
+              s++;
+            else if (*s == '\n' && !instring)
+              {
+                end = s;
+                break;
+              }
+            ++s;
+          }
+      }
+#else
+    argv = construct_command_argv (p, &end, child->file,
+                                   child->file->cmds->lines_flags[child->command_line - 1],
+                                   &child->sh_batch_file);
+#endif
+    if (end == NULL)
+      child->command_ptr = NULL;
+    else
+      {
+        *end++ = '\0';
+        child->command_ptr = end;
+      }
+  }
+
+  /* If -q was given, say that updating 'failed' if there was any text on the
+     command line, or 'succeeded' otherwise.  The exit status of 1 tells the
+     user that -q is saying 'something to do'; the exit status for a random
+     error is 2.  */
+  if (argv != 0 && question_flag && !(flags & COMMANDS_RECURSE))
+    {
+#ifndef VMS
+      free (argv[0]);
+      free (argv);
+#endif
+#ifdef VMS
+      /* On VMS, argv[0] can be a null string here */
+      if (argv[0] != 0)
+        {
+#endif
+          child->file->update_status = us_question;
+          notice_finished_file (child->file);
+          return;
+#ifdef VMS
+        }
+#endif
+    }
+
+  if (touch_flag && !(flags & COMMANDS_RECURSE))
+    {
+      /* Go on to the next command.  It might be the recursive one.
+         We construct ARGV only to find the end of the command line.  */
+#ifndef VMS
+      if (argv)
+        {
+          free (argv[0]);
+          free (argv);
+        }
+#endif
+      argv = 0;
+    }
+
+  if (argv == 0)
+    {
+    next_command:
+#ifdef __MSDOS__
+      execute_by_shell = 0;   /* in case construct_command_argv sets it */
+#endif
+      /* This line has no commands.  Go to the next.  */
+      if (job_next_command (child))
+        start_job_command (child);
+      else
+        {
+          /* No more commands.  Make sure we're "running"; we might not be if
+             (e.g.) all commands were skipped due to -n.  */
+          set_command_state (child->file, cs_running);
+          child->file->update_status = us_success;
+          notice_finished_file (child->file);
+        }
+
+      OUTPUT_UNSET();
+      return;
+    }
+
+  /* Are we going to synchronize this command's output?  Do so if either we're
+     in SYNC_RECURSE mode or this command is not recursive.  We'll also check
+     output_sync separately below in case it changes due to error.  */
+  child->output.syncout = output_sync && (output_sync == OUTPUT_SYNC_RECURSE
+                                          || !(flags & COMMANDS_RECURSE));
+  OUTPUT_SET (&child->output);
+
+#ifndef NO_OUTPUT_SYNC
+  if (! child->output.syncout)
+    /* We don't want to sync this command: to avoid misordered
+       output ensure any already-synced content is written.  */
+    output_dump (&child->output);
+#endif
+
+  /* Print the command if appropriate.  */
+#ifdef CONFIG_PRETTY_COMMAND_PRINTING
+  if (   pretty_command_printing
+      && (just_print_flag || (!(flags & COMMANDS_SILENT) && !silent_flag))
+      && argv[0][0] != '\0')
+    {
+      unsigned i;
+      for (i = 0; argv[i]; i++)
+        OSSS ( message, 0, "%s'%s'%s", i ? "\t" : "> ", argv[i], argv[i + 1] ? " \\" : "");
+    }
+  else
+#endif /* CONFIG_PRETTY_COMMAND_PRINTING */
+  if (just_print_flag || trace_flag
+      || (!(flags & COMMANDS_SILENT) && !silent_flag))
+    OS (message, 0, "%s", p);
+
+  /* Tell update_goal_chain that a command has been started on behalf of
+     this target.  It is important that this happens here and not in
+     reap_children (where we used to do it), because reap_children might be
+     reaping children from a different target.  We want this increment to
+     guaranteedly indicate that a command was started for the dependency
+     chain (i.e., update_file recursion chain) we are processing.  */
+
+  ++commands_started;
+
+  /* Optimize an empty command.  People use this for timestamp rules,
+     so avoid forking a useless shell.  Do this after we increment
+     commands_started so make still treats this special case as if it
+     performed some action (makes a difference as to what messages are
+     printed, etc.  */
+
+#if !defined(VMS) && !defined(_AMIGA)
+  if (
+#if defined __MSDOS__ || defined (__EMX__)
+      unixy_shell       /* the test is complicated and we already did it */
+#else
+      (argv[0] && is_bourne_compatible_shell (argv[0]))
+#endif
+      && (argv[1] && argv[1][0] == '-'
+        &&
+            ((argv[1][1] == 'c' && argv[1][2] == '\0')
+          ||
+             (argv[1][1] == 'e' && argv[1][2] == 'c' && argv[1][3] == '\0')))
+      && (argv[2] && argv[2][0] == ':' && argv[2][1] == '\0')
+      && argv[3] == NULL)
+    {
+      free (argv[0]);
+      free (argv);
+      goto next_command;
+    }
+#endif  /* !VMS && !_AMIGA */
+
+  /* If -n was given, recurse to get the next line in the sequence.  */
+
+  if (just_print_flag && !(flags & COMMANDS_RECURSE))
+    {
+#ifndef VMS
+      free (argv[0]);
+      free (argv);
+#endif
+      goto next_command;
+    }
+
+  /* We're sure we're going to invoke a command: set up the output.  */
+  output_start ();
+
+  /* Flush the output streams so they won't have things written twice.  */
+
+  fflush (stdout);
+  fflush (stderr);
+
+#ifdef CONFIG_WITH_KMK_BUILTIN
+  /* If builtin command then pass it on to the builtin shell interpreter. */
+
+  if ((flags & COMMANDS_KMK_BUILTIN) && !just_print_flag)
+    {
+      int    rc;
+      char **argv_spawn = NULL;
+      char **p2 = argv;
+      while (*p2 && strncmp (*p2, "kmk_builtin_", sizeof("kmk_builtin_") - 1))
+        p2++;
+      assert (*p2);
+      set_command_state (child->file, cs_running);
+      child->deleted = 0;
+      child->pid = 0;
+      if (p2 != argv)
+        rc = kmk_builtin_command (*p2, child, &argv_spawn, &child->pid);
+      else
+        {
+          int argc = 1;
+          while (argv[argc])
+            argc++;
+          rc = kmk_builtin_command_parsed (argc, argv, child, &argv_spawn, &child->pid);
+        }
+
+# ifndef VMS
+      free (argv[0]);
+      free ((char *) argv);
+# endif
+
+      if (!rc)
+        {
+          /* spawned a child? */
+          if (child->pid)
+            {
+              ++job_counter;
+              return;
+            }
+
+          /* synchronous command execution? */
+          if (!argv_spawn)
+            goto next_command;
+        }
+
+      /* failure? */
+      if (rc)
+        {
+          child->pid = (pid_t)42424242;
+          child->status = rc << 8;
+          child->has_status = 1;
+          unblock_sigs();
+          return;
+        }
+
+      /* conditional check == true; kicking off a child (not kmk_builtin_*). */
+      argv = argv_spawn;
+    }
+#endif /* CONFIG_WITH_KMK_BUILTIN */
+
+  /* Decide whether to give this child the 'good' standard input
+     (one that points to the terminal or whatever), or the 'bad' one
+     that points to the read side of a broken pipe.  */
+
+  child->good_stdin = !good_stdin_used;
+  if (child->good_stdin)
+    good_stdin_used = 1;
+
+  child->deleted = 0;
+
+#ifndef _AMIGA
+  /* Set up the environment for the child.  */
+  if (child->environment == 0)
+    child->environment = target_environment (child->file);
+#endif
+
+#if !defined(__MSDOS__) && !defined(_AMIGA) && !defined(WINDOWS32)
+
+#ifndef VMS
+  /* start_waiting_job has set CHILD->remote if we can start a remote job.  */
+  if (child->remote)
+    {
+      int is_remote, id, used_stdin;
+      if (start_remote_job (argv, child->environment,
+                            child->good_stdin ? 0 : get_bad_stdin (),
+                            &is_remote, &id, &used_stdin))
+        /* Don't give up; remote execution may fail for various reasons.  If
+           so, simply run the job locally.  */
+        goto run_local;
+      else
+        {
+          if (child->good_stdin && !used_stdin)
+            {
+              child->good_stdin = 0;
+              good_stdin_used = 0;
+            }
+          child->remote = is_remote;
+          child->pid = id;
+        }
+    }
+  else
+#endif /* !VMS */
+    {
+      /* Fork the child process.  */
+
+      char **parent_environ;
+
+    run_local:
+      block_sigs ();
+
+      child->remote = 0;
+
+#ifdef VMS
+      if (!child_execute_job (child, argv))
+        {
+          /* Fork failed!  */
+          perror_with_name ("fork", "");
+          goto error;
+        }
+
+#else
+
+      parent_environ = environ;
+
+      jobserver_pre_child (flags & COMMANDS_RECURSE);
+
+      child->pid = child_execute_job (&child->output, child->good_stdin, argv, child->environment);
+
+      environ = parent_environ; /* Restore value child may have clobbered.  */
+      jobserver_post_child (flags & COMMANDS_RECURSE);
+
+      if (child->pid < 0)
+        {
+          /* Fork failed!  */
+          unblock_sigs ();
+          perror_with_name ("fork", "");
+          goto error;
+        }
+#endif /* !VMS */
+    }
+
+#else   /* __MSDOS__ or Amiga or WINDOWS32 */
+#ifdef __MSDOS__
+  {
+    int proc_return;
+
+    block_sigs ();
+    dos_status = 0;
+
+    /* We call 'system' to do the job of the SHELL, since stock DOS
+       shell is too dumb.  Our 'system' knows how to handle long
+       command lines even if pipes/redirection is needed; it will only
+       call COMMAND.COM when its internal commands are used.  */
+    if (execute_by_shell)
+      {
+        char *cmdline = argv[0];
+        /* We don't have a way to pass environment to 'system',
+           so we need to save and restore ours, sigh...  */
+        char **parent_environ = environ;
+
+        environ = child->environment;
+
+        /* If we have a *real* shell, tell 'system' to call
+           it to do everything for us.  */
+        if (unixy_shell)
+          {
+            /* A *real* shell on MSDOS may not support long
+               command lines the DJGPP way, so we must use 'system'.  */
+            cmdline = argv[2];  /* get past "shell -c" */
+          }
+
+        dos_command_running = 1;
+        proc_return = system (cmdline);
+        environ = parent_environ;
+        execute_by_shell = 0;   /* for the next time */
+      }
+    else
+      {
+        dos_command_running = 1;
+        proc_return = spawnvpe (P_WAIT, argv[0], argv, child->environment);
+      }
+
+    /* Need to unblock signals before turning off
+       dos_command_running, so that child's signals
+       will be treated as such (see fatal_error_signal).  */
+    unblock_sigs ();
+    dos_command_running = 0;
+
+    /* If the child got a signal, dos_status has its
+       high 8 bits set, so be careful not to alter them.  */
+    if (proc_return == -1)
+      dos_status |= 0xff;
+    else
+      dos_status |= (proc_return & 0xff);
+    ++dead_children;
+    child->pid = dos_pid++;
+  }
+#endif /* __MSDOS__ */
+#ifdef _AMIGA
+  amiga_status = MyExecute (argv);
+
+  ++dead_children;
+  child->pid = amiga_pid++;
+  if (amiga_batch_file)
+  {
+     amiga_batch_file = 0;
+     DeleteFile (amiga_bname);        /* Ignore errors.  */
+  }
+#endif  /* Amiga */
+#ifdef WINDOWS32
+  {
+#  ifndef CONFIG_NEW_WIN_CHILDREN
+      HANDLE hPID;
+      char* arg0;
+      int outfd = FD_STDOUT;
+      int errfd = FD_STDERR;
+
+      /* make UNC paths safe for CreateProcess -- backslash format */
+      arg0 = argv[0];
+      if (arg0 && arg0[0] == '/' && arg0[1] == '/')
+        for ( ; arg0 && *arg0; arg0++)
+          if (*arg0 == '/')
+            *arg0 = '\\';
+
+      /* make sure CreateProcess() has Path it needs */
+      sync_Path_environment ();
+
+#ifndef NO_OUTPUT_SYNC
+      /* Divert child output if output_sync in use.  */
+      if (child->output.syncout)
+        {
+          if (child->output.out >= 0)
+            outfd = child->output.out;
+          if (child->output.err >= 0)
+            errfd = child->output.err;
+        }
+#else
+      outfd = errfd = -1;
+#endif
+      hPID = process_easy (argv, child->environment, outfd, errfd);
+
+      if (hPID != INVALID_HANDLE_VALUE)
+        child->pid = (pid_t) hPID;
+      else
+        {
+          int i;
+          unblock_sigs ();
+          fprintf (stderr,
+                   _("process_easy() failed to launch process (e=%ld)\n"),
+                   process_last_err (hPID));
+          for (i = 0; argv[i]; i++)
+            fprintf (stderr, "%s ", argv[i]);
+          fprintf (stderr, _("\nCounted %d args in failed launch\n"), i);
+          goto error;
+        }
+#  else   /* CONFIG_NEW_WIN_CHILDREN */
+    struct variable *shell_var = lookup_variable("SHELL", 5);
+    const char *shell_value = !shell_var ? NULL
+                            : !shell_var->recursive || strchr(shell_var->value, '$') == NULL
+                            ? shell_var->value : variable_expand (shell_var->value);
+    int rc = MkWinChildCreate(argv, child->environment, shell_value, child, &child->pid);
+    if (rc != 0)
+      {
+        int i;
+        unblock_sigs ();
+        fprintf (stderr, _("failed to launch process (rc=%d)\n"), rc);
+        for (i = 0; argv[i]; i++)
+          fprintf (stderr, "%s ", argv[i]);
+        fprintf (stderr, "\n", argv[i]);
+        goto error;
+      }
+#  endif  /* CONFIG_NEW_WIN_CHILDREN */
+  }
+#endif /* WINDOWS32 */
+#endif  /* __MSDOS__ or Amiga or WINDOWS32 */
+
+  /* Bump the number of jobs started in this second.  */
+  ++job_counter;
+
+  /* We are the parent side.  Set the state to
+     say the commands are running and return.  */
+
+  set_command_state (child->file, cs_running);
+
+  /* Free the storage used by the child's argument list.  */
+#ifdef KMK /* leak */
+ cleanup_argv:
+#endif
+#ifndef VMS
+  free (argv[0]);
+  free (argv);
+#endif
+
+  OUTPUT_UNSET();
+  return;
+
+ error:
+  child->file->update_status = us_failed;
+  notice_finished_file (child->file);
+#ifdef KMK /* fix leak */
+  goto cleanup_argv;
+#else
+  OUTPUT_UNSET();
+#endif
+}
+
+/* Try to start a child running.
+   Returns nonzero if the child was started (and maybe finished), or zero if
+   the load was too high and the child was put on the 'waiting_jobs' chain.  */
+
+static int
+start_waiting_job (struct child *c)
+{
+  struct file *f = c->file;
+#ifdef DB_KMK
+  DB (DB_KMK, (_("start_waiting_job %p (`%s') command_flags=%#x slots=%d/%d\n"),
+               (void *)c, c->file->name, c->file->command_flags, job_slots_used, job_slots));
+#endif
+
+  /* If we can start a job remotely, we always want to, and don't care about
+     the local load average.  We record that the job should be started
+     remotely in C->remote for start_job_command to test.  */
+
+  c->remote = start_remote_job_p (1);
+
+#ifdef CONFIG_WITH_EXTENDED_NOTPARALLEL
+  if (c->file->command_flags & COMMANDS_NOTPARALLEL)
+    {
+      DB (DB_KMK, (_("not_parallel %d -> %d (file=%p `%s') [start_waiting_job]\n"),
+                   not_parallel, not_parallel + 1, (void *)c->file, c->file->name));
+      assert(not_parallel >= 0);
+      ++not_parallel;
+    }
+#endif /* CONFIG_WITH_EXTENDED_NOTPARALLEL */
+
+  /* If we are running at least one job already and the load average
+     is too high, make this one wait.  */
+  if (!c->remote
+#ifdef CONFIG_WITH_EXTENDED_NOTPARALLEL
+      && ((job_slots_used > 0 && (not_parallel > 0 || load_too_high ()))
+#else
+      && ((job_slots_used > 0 && load_too_high ())
+#endif
+#ifdef WINDOWS32
+# ifndef CONFIG_NEW_WIN_CHILDREN
+          || (process_used_slots () >= MAXIMUM_WAIT_OBJECTS)
+# endif
+#endif
+          ))
+    {
+#ifndef CONFIG_WITH_EXTENDED_NOTPARALLEL
+        /* Put this child on the chain of children waiting for the load average
+           to go down.  */
+        set_command_state (f, cs_running);
+        c->next = waiting_jobs;
+        waiting_jobs = c;
+
+#else  /* CONFIG_WITH_EXTENDED_NOTPARALLEL */
+
+      /* Put this child on the chain of children waiting for the load average
+         to go down. If not parallel, put it last.  */
+      set_command_state (f, cs_running);
+      c->next = waiting_jobs;
+      if (c->next && (c->file->command_flags & COMMANDS_NOTPARALLEL))
+        {
+          struct child *prev = waiting_jobs;
+          while (prev->next)
+            prev = prev->next;
+          c->next = 0;
+          prev->next = c;
+        }
+      else /* FIXME: insert after the last node with COMMANDS_NOTPARALLEL set */
+        waiting_jobs = c;
+      DB (DB_KMK, (_("queued child %p (`%s')\n"), (void *)c, c->file->name));
+#endif /* CONFIG_WITH_EXTENDED_NOTPARALLEL */
+      return 0;
+    }
+
+  /* Start the first command; reap_children will run later command lines.  */
+  start_job_command (c);
+
+  switch (f->command_state)
+    {
+    case cs_running:
+      c->next = children;
+      DB (DB_JOBS, (_("Putting child %p (%s) PID %s%s on the chain.\n"),
+                    (void *)c, c->file->name, pid2str (c->pid),
+                    c->remote ? _(" (remote)") : ""));
+      children = c;
+      /* One more job slot is in use.  */
+      ++job_slots_used;
+      unblock_sigs ();
+      break;
+
+    case cs_not_started:
+      /* All the command lines turned out to be empty.  */
+      f->update_status = us_success;
+      /* FALLTHROUGH */
+
+    case cs_finished:
+      notice_finished_file (f);
+      free_child (c);
+      break;
+
+    default:
+      assert (f->command_state == cs_finished);
+      break;
+    }
+
+  return 1;
+}
+
+/* Create a 'struct child' for FILE and start its commands running.  */
+
+void
+new_job (struct file *file)
+{
+  struct commands *cmds = file->cmds;
+  struct child *c;
+  char **lines;
+  unsigned int i;
+
+  /* Let any previously decided-upon jobs that are waiting
+     for the load to go down start before this new one.  */
+  start_waiting_jobs ();
+
+  /* Reap any children that might have finished recently.  */
+  reap_children (0, 0);
+
+  /* Chop the commands up into lines if they aren't already.  */
+  chop_commands (cmds);
+#ifdef CONFIG_WITH_MEMORY_OPTIMIZATIONS
+  cmds->refs++; /* retain the chopped lines.  */
+#endif
+
+  /* Start the command sequence, record it in a new
+     'struct child', and add that to the chain.  */
+
+  c = xcalloc (sizeof (struct child));
+  output_init (&c->output);
+
+  c->file = file;
+  c->sh_batch_file = NULL;
+
+  /* Cache dontcare flag because file->dontcare can be changed once we
+     return. Check dontcare inheritance mechanism for details.  */
+  c->dontcare = file->dontcare;
+
+  /* Start saving output in case the expansion uses $(info ...) etc.  */
+  OUTPUT_SET (&c->output);
+
+  /* Expand the command lines and store the results in LINES.  */
+  lines = xmalloc (cmds->ncommand_lines * sizeof (char *));
+  for (i = 0; i < cmds->ncommand_lines; ++i)
+    {
+      /* Collapse backslash-newline combinations that are inside variable
+         or function references.  These are left alone by the parser so
+         that they will appear in the echoing of commands (where they look
+         nice); and collapsed by construct_command_argv when it tokenizes.
+         But letting them survive inside function invocations loses because
+         we don't want the functions to see them as part of the text.  */
+
+      char *in, *out, *ref;
+
+      /* IN points to where in the line we are scanning.
+         OUT points to where in the line we are writing.
+         When we collapse a backslash-newline combination,
+         IN gets ahead of OUT.  */
+
+      in = out = cmds->command_lines[i];
+      while ((ref = strchr (in, '$')) != 0)
+        {
+          ++ref;                /* Move past the $.  */
+
+          if (out != in)
+            /* Copy the text between the end of the last chunk
+               we processed (where IN points) and the new chunk
+               we are about to process (where REF points).  */
+            memmove (out, in, ref - in);
+
+          /* Move both pointers past the boring stuff.  */
+          out += ref - in;
+          in = ref;
+
+          if (*ref == '(' || *ref == '{')
+            {
+              char openparen = *ref;
+              char closeparen = openparen == '(' ? ')' : '}';
+              char *outref;
+              int count;
+              char *p;
+
+              *out++ = *in++;   /* Copy OPENPAREN.  */
+              outref = out;
+              /* IN now points past the opening paren or brace.
+                 Count parens or braces until it is matched.  */
+              count = 0;
+              while (*in != '\0')
+                {
+                  if (*in == closeparen && --count < 0)
+                    break;
+                  else if (*in == '\\' && in[1] == '\n')
+                    {
+                      /* We have found a backslash-newline inside a
+                         variable or function reference.  Eat it and
+                         any following whitespace.  */
+
+                      int quoted = 0;
+                      for (p = in - 1; p > ref && *p == '\\'; --p)
+                        quoted = !quoted;
+
+                      if (quoted)
+                        /* There were two or more backslashes, so this is
+                           not really a continuation line.  We don't collapse
+                           the quoting backslashes here as is done in
+                           collapse_continuations, because the line will
+                           be collapsed again after expansion.  */
+                        *out++ = *in++;
+                      else
+                        {
+                          /* Skip the backslash, newline, and whitespace.  */
+                          in += 2;
+                          NEXT_TOKEN (in);
+
+                          /* Discard any preceding whitespace that has
+                             already been written to the output.  */
+                          while (out > outref && ISBLANK (out[-1]))
+                            --out;
+
+                          /* Replace it all with a single space.  */
+                          *out++ = ' ';
+                        }
+                    }
+                  else
+                    {
+                      if (*in == openparen)
+                        ++count;
+
+                      *out++ = *in++;
+                    }
+                }
+            }
+        }
+
+      /* There are no more references in this line to worry about.
+         Copy the remaining uninteresting text to the output.  */
+      if (out != in)
+        memmove (out, in, strlen (in) + 1);
+
+      /* Finally, expand the line.  */
+      cmds->fileinfo.offset = i;
+      lines[i] = allocated_variable_expand_for_file (cmds->command_lines[i],
+                                                     file);
+    }
+
+  cmds->fileinfo.offset = 0;
+  c->command_lines = lines;
+#ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+  c->start_ts = -1;
+#endif
+
+  /* Fetch the first command line to be run.  */
+  job_next_command (c);
+
+  /* Wait for a job slot to be freed up.  If we allow an infinite number
+     don't bother; also job_slots will == 0 if we're using the jobserver.  */
+
+  if (job_slots != 0)
+    while (job_slots_used == job_slots)
+      reap_children (1, 0);
+
+#ifdef MAKE_JOBSERVER
+  /* If we are controlling multiple jobs make sure we have a token before
+     starting the child. */
+
+  /* This can be inefficient.  There's a decent chance that this job won't
+     actually have to run any subprocesses: the command script may be empty
+     or otherwise optimized away.  It would be nice if we could defer
+     obtaining a token until just before we need it, in start_job_command.
+     To do that we'd need to keep track of whether we'd already obtained a
+     token (since start_job_command is called for each line of the job, not
+     just once).  Also more thought needs to go into the entire algorithm;
+     this is where the old parallel job code waits, so...  */
+
+  else if (jobserver_enabled ())
+    while (1)
+      {
+        int got_token;
+
+        DB (DB_JOBS, ("Need a job token; we %shave children\n",
+                      children ? "" : "don't "));
+
+        /* If we don't already have a job started, use our "free" token.  */
+        if (!jobserver_tokens)
+          break;
+
+        /* Prepare for jobserver token acquisition.  */
+        jobserver_pre_acquire ();
+
+        /* Reap anything that's currently waiting.  */
+        reap_children (0, 0);
+
+        /* Kick off any jobs we have waiting for an opportunity that
+           can run now (i.e., waiting for load). */
+        start_waiting_jobs ();
+
+        /* If our "free" slot is available, use it; we don't need a token.  */
+        if (!jobserver_tokens)
+          break;
+
+        /* There must be at least one child already, or we have no business
+           waiting for a token. */
+        if (!children)
+          O (fatal, NILF, "INTERNAL: no children as we go to sleep on read\n");
+
+        /* Get a token.  */
+        got_token = jobserver_acquire (waiting_jobs != NULL);
+
+        /* If we got one, we're done here.  */
+        if (got_token == 1)
+          {
+            DB (DB_JOBS, (_("Obtained token for child %p (%s).\n"),
+                          (void *)c, c->file->name));
+            break;
+          }
+      }
+#endif
+
+  ++jobserver_tokens;
+
+  /* Trace the build.
+     Use message here so that changes to working directories are logged.  */
+  if (trace_flag)
+    {
+      char *newer = allocated_variable_expand_for_file ("$?", c->file);
+      const char *nm;
+
+      if (! cmds->fileinfo.filenm)
+        nm = _("<builtin>");
+      else
+        {
+          char *n = alloca (strlen (cmds->fileinfo.filenm) + 1 + 11 + 1);
+          sprintf (n, "%s:%lu", cmds->fileinfo.filenm, cmds->fileinfo.lineno);
+          nm = n;
+        }
+
+      if (newer[0] == '\0')
+        OSS (message, 0,
+             _("%s: target '%s' does not exist"), nm, c->file->name);
+      else
+        OSSS (message, 0,
+              _("%s: update target '%s' due to: %s"), nm, c->file->name, newer);
+
+      free (newer);
+    }
+
+  /* The job is now primed.  Start it running.
+     (This will notice if there is in fact no recipe.)  */
+  start_waiting_job (c);
+
+#ifndef CONFIG_WITH_EXTENDED_NOTPARALLEL
+  if (job_slots == 1 || not_parallel)
+    /* Since there is only one job slot, make things run linearly.
+       Wait for the child to die, setting the state to 'cs_finished'.  */
+    while (file->command_state == cs_running)
+      reap_children (1, 0);
+
+#else /* CONFIG_WITH_EXTENDED_NOTPARALLEL */
+
+  if (job_slots == 1 || not_parallel < 0)
+    {
+      /* Since there is only one job slot, make things run linearly.
+         Wait for the child to die, setting the state to `cs_finished'.  */
+      while (file->command_state == cs_running)
+        reap_children (1, 0);
+    }
+  else if (not_parallel > 0)
+    {
+      /* wait for all live children to finish and then continue
+         with the not-parallel child(s). FIXME: this loop could be better? */
+      while (file->command_state == cs_running
+          && (children != 0 || shell_function_pid != 0) /* reap_child condition */
+          && not_parallel > 0)
+        reap_children (1, 0);
+    }
+#endif /* CONFIG_WITH_EXTENDED_NOTPARALLEL */
+
+  OUTPUT_UNSET ();
+  return;
+}
+
+/* Move CHILD's pointers to the next command for it to execute.
+   Returns nonzero if there is another command.  */
+
+static int
+job_next_command (struct child *child)
+{
+  while (child->command_ptr == 0 || *child->command_ptr == '\0')
+    {
+      /* There are no more lines in the expansion of this line.  */
+      if (child->command_line == child->file->cmds->ncommand_lines)
+        {
+          /* There are no more lines to be expanded.  */
+          child->command_ptr = 0;
+          child->file->cmds->fileinfo.offset = 0;
+          return 0;
+        }
+      else
+        /* Get the next line to run.  */
+        child->command_ptr = child->command_lines[child->command_line++];
+    }
+
+  child->file->cmds->fileinfo.offset = child->command_line - 1;
+  return 1;
+}
+
+/* Determine if the load average on the system is too high to start a new job.
+   The real system load average is only recomputed once a second.  However, a
+   very parallel make can easily start tens or even hundreds of jobs in a
+   second, which brings the system to its knees for a while until that first
+   batch of jobs clears out.
+
+   To avoid this we use a weighted algorithm to try to account for jobs which
+   have been started since the last second, and guess what the load average
+   would be now if it were computed.
+
+   This algorithm was provided by Thomas Riedl <thomas.riedl@siemens.com>,
+   who writes:
+
+!      calculate something load-oid and add to the observed sys.load,
+!      so that latter can catch up:
+!      - every job started increases jobctr;
+!      - every dying job decreases a positive jobctr;
+!      - the jobctr value gets zeroed every change of seconds,
+!        after its value*weight_b is stored into the 'backlog' value last_sec
+!      - weight_a times the sum of jobctr and last_sec gets
+!        added to the observed sys.load.
+!
+!      The two weights have been tried out on 24 and 48 proc. Sun Solaris-9
+!      machines, using a several-thousand-jobs-mix of cpp, cc, cxx and smallish
+!      sub-shelled commands (rm, echo, sed...) for tests.
+!      lowering the 'direct influence' factor weight_a (e.g. to 0.1)
+!      resulted in significant excession of the load limit, raising it
+!      (e.g. to 0.5) took bad to small, fast-executing jobs and didn't
+!      reach the limit in most test cases.
+!
+!      lowering the 'history influence' weight_b (e.g. to 0.1) resulted in
+!      exceeding the limit for longer-running stuff (compile jobs in
+!      the .5 to 1.5 sec. range),raising it (e.g. to 0.5) overrepresented
+!      small jobs' effects.
+
+ */
+
+#define LOAD_WEIGHT_A           0.25
+#define LOAD_WEIGHT_B           0.25
+
+static int
+load_too_high (void)
+{
+#if defined(__MSDOS__) || defined(VMS) || defined(_AMIGA) || defined(__riscos__) || defined(__HAIKU__)
+  return 1;
+#else
+  static double last_sec;
+  static time_t last_now;
+  double load, guess;
+  time_t now;
+
+#if defined(WINDOWS32) && !defined(CONFIG_NEW_WIN_CHILDREN)
+  /* sub_proc.c cannot wait for more than MAXIMUM_WAIT_OBJECTS children */
+  if (process_used_slots () >= MAXIMUM_WAIT_OBJECTS)
+    return 1;
+#endif
+
+  if (max_load_average < 0)
+    return 0;
+
+  /* Find the real system load average.  */
+  make_access ();
+  if (getloadavg (&load, 1) != 1)
+    {
+      static int lossage = -1;
+      /* Complain only once for the same error.  */
+      if (lossage == -1 || errno != lossage)
+        {
+          if (errno == 0)
+            /* An errno value of zero means getloadavg is just unsupported.  */
+            O (error, NILF,
+               _("cannot enforce load limits on this operating system"));
+          else
+            perror_with_name (_("cannot enforce load limit: "), "getloadavg");
+        }
+      lossage = errno;
+      load = 0;
+    }
+  user_access ();
+
+  /* If we're in a new second zero the counter and correct the backlog
+     value.  Only keep the backlog for one extra second; after that it's 0.  */
+  now = time (NULL);
+  if (last_now < now)
+    {
+      if (last_now == now - 1)
+        last_sec = LOAD_WEIGHT_B * job_counter;
+      else
+        last_sec = 0.0;
+
+      job_counter = 0;
+      last_now = now;
+    }
+
+  /* Try to guess what the load would be right now.  */
+  guess = load + (LOAD_WEIGHT_A * (job_counter + last_sec));
+
+  DB (DB_JOBS, ("Estimated system load = %f (actual = %f) (max requested = %f)\n",
+                guess, load, max_load_average));
+
+  return guess >= max_load_average;
+#endif
+}
+
+/* Start jobs that are waiting for the load to be lower.  */
+
+void
+start_waiting_jobs (void)
+{
+  struct child *job;
+
+  if (waiting_jobs == 0)
+    return;
+
+  do
+    {
+      /* Check for recently deceased descendants.  */
+      reap_children (0, 0);
+
+      /* Take a job off the waiting list.  */
+      job = waiting_jobs;
+      waiting_jobs = job->next;
+
+#ifdef CONFIG_WITH_EXTENDED_NOTPARALLEL
+      /* If it's a not-parallel job, we've already counted it once
+         when it was queued in start_waiting_job, so decrement
+         before sending it to  start_waiting_job again. */
+      if (job->file->command_flags & COMMANDS_NOTPARALLEL)
+        {
+          DB (DB_KMK, (_("not_parallel %d -> %d (file=%p `%s') [start_waiting_jobs]\n"),
+                       not_parallel, not_parallel - 1, (void *) job->file, job->file->name));
+          assert(not_parallel > 0);
+          --not_parallel;
+        }
+#endif /* CONFIG_WITH_EXTENDED_NOTPARALLEL */
+
+      /* Try to start that job.  We break out of the loop as soon
+         as start_waiting_job puts one back on the waiting list.  */
+    }
+  while (start_waiting_job (job) && waiting_jobs != 0);
+
+  return;
+}
+
+#ifndef WINDOWS32
+
+/* EMX: Start a child process. This function returns the new pid.  */
+# if defined __EMX__
+int
+child_execute_job (struct output *out, int good_stdin, char **argv, char **envp)
+{
+  int pid;
+  int fdin = good_stdin ? FD_STDIN : get_bad_stdin ();
+  int fdout = FD_STDOUT;
+  int fderr = FD_STDERR;
+  int save_fdin = -1;
+  int save_fdout = -1;
+  int save_fderr = -1;
+
+  /* Divert child output if we want to capture output.  */
+  if (out && out->syncout)
+    {
+      if (out->out >= 0)
+        fdout = out->out;
+      if (out->err >= 0)
+        fderr = out->err;
+    }
+
+  /* For each FD which needs to be redirected first make a dup of the standard
+     FD to save and mark it close on exec so our child won't see it.  Then
+     dup2() the standard FD to the redirect FD, and also mark the redirect FD
+     as close on exec. */
+  if (fdin != FD_STDIN)
+    {
+      save_fdin = dup (FD_STDIN);
+      if (save_fdin < 0)
+        O (fatal, NILF, _("no more file handles: could not duplicate stdin\n"));
+      CLOSE_ON_EXEC (save_fdin);
+
+      dup2 (fdin, FD_STDIN);
+      CLOSE_ON_EXEC (fdin);
+    }
+
+  if (fdout != FD_STDOUT)
+    {
+      save_fdout = dup (FD_STDOUT);
+      if (save_fdout < 0)
+        O (fatal, NILF,
+           _("no more file handles: could not duplicate stdout\n"));
+      CLOSE_ON_EXEC (save_fdout);
+
+      dup2 (fdout, FD_STDOUT);
+      CLOSE_ON_EXEC (fdout);
+    }
+
+  if (fderr != FD_STDERR)
+    {
+      if (fderr != fdout)
+        {
+          save_fderr = dup (FD_STDERR);
+          if (save_fderr < 0)
+            O (fatal, NILF,
+               _("no more file handles: could not duplicate stderr\n"));
+          CLOSE_ON_EXEC (save_fderr);
+        }
+
+      dup2 (fderr, FD_STDERR);
+      CLOSE_ON_EXEC (fderr);
+    }
+
+  /* Run the command.  */
+  pid = exec_command (argv, envp);
+
+  /* Restore stdout/stdin/stderr of the parent and close temporary FDs.  */
+  if (save_fdin >= 0)
+    {
+      if (dup2 (save_fdin, FD_STDIN) != FD_STDIN)
+        O (fatal, NILF, _("Could not restore stdin\n"));
+      else
+        close (save_fdin);
+    }
+
+  if (save_fdout >= 0)
+    {
+      if (dup2 (save_fdout, FD_STDOUT) != FD_STDOUT)
+        O (fatal, NILF, _("Could not restore stdout\n"));
+      else
+        close (save_fdout);
+    }
+
+  if (save_fderr >= 0)
+    {
+      if (dup2 (save_fderr, FD_STDERR) != FD_STDERR)
+        O (fatal, NILF, _("Could not restore stderr\n"));
+      else
+        close (save_fderr);
+    }
+
+  return pid;
+}
+
+#elif !defined (_AMIGA) && !defined (__MSDOS__) && !defined (VMS)
+
+/* POSIX:
+   Create a child process executing the command in ARGV.
+   ENVP is the environment of the new program.  Returns the PID or -1.  */
+int
+child_execute_job (struct output *out, int good_stdin, char **argv, char **envp)
+{
+  int r;
+  int pid;
+  int fdin = good_stdin ? FD_STDIN : get_bad_stdin ();
+  int fdout = FD_STDOUT;
+  int fderr = FD_STDERR;
+
+  /* Divert child output if we want to capture it.  */
+  if (out && out->syncout)
+    {
+      if (out->out >= 0)
+        fdout = out->out;
+      if (out->err >= 0)
+        fderr = out->err;
+    }
+
+  pid = vfork();
+  if (pid != 0)
+    return pid;
+
+  /* We are the child.  */
+  unblock_sigs ();
+
+#ifdef SET_STACK_SIZE
+  /* Reset limits, if necessary.  */
+  if (stack_limit.rlim_cur)
+    setrlimit (RLIMIT_STACK, &stack_limit);
+#endif
+
+  /* For any redirected FD, dup2() it to the standard FD.
+     They are all marked close-on-exec already.  */
+  if (fdin != FD_STDIN)
+    EINTRLOOP (r, dup2 (fdin, FD_STDIN));
+  if (fdout != FD_STDOUT)
+    EINTRLOOP (r, dup2 (fdout, FD_STDOUT));
+  if (fderr != FD_STDERR)
+    EINTRLOOP (r, dup2 (fderr, FD_STDERR));
+
+  /* Run the command.  */
+  exec_command (argv, envp);
+}
+#endif /* !AMIGA && !__MSDOS__ && !VMS */
+#endif /* !WINDOWS32 */
+
+#if !defined(WINDOWS32) || !defined(CONFIG_NEW_WIN_CHILDREN)
+#ifndef _AMIGA
+/* Replace the current process with one running the command in ARGV,
+   with environment ENVP.  This function does not return.  */
+
+/* EMX: This function returns the pid of the child process.  */
+# ifdef __EMX__
+int
+# else
+void
+# endif
+exec_command (char **argv, char **envp)
+{
+#ifdef VMS
+  /* to work around a problem with signals and execve: ignore them */
+#ifdef SIGCHLD
+  signal (SIGCHLD,SIG_IGN);
+#endif
+  /* Run the program.  */
+  execve (argv[0], argv, envp);
+  perror_with_name ("execve: ", argv[0]);
+  _exit (EXIT_FAILURE);
+#else
+#ifdef WINDOWS32
+# ifndef CONFIG_NEW_WIN_CHILDREN
+  HANDLE hPID;
+  HANDLE hWaitPID;
+  int exit_code = EXIT_FAILURE;
+
+  /* make sure CreateProcess() has Path it needs */
+  sync_Path_environment ();
+
+  /* launch command */
+  hPID = process_easy (argv, envp, -1, -1);
+
+  /* make sure launch ok */
+  if (hPID == INVALID_HANDLE_VALUE)
+    {
+      int i;
+      fprintf (stderr, _("process_easy() failed to launch process (e=%ld)\n"),
+               process_last_err (hPID));
+      for (i = 0; argv[i]; i++)
+          fprintf (stderr, "%s ", argv[i]);
+      fprintf (stderr, _("\nCounted %d args in failed launch\n"), i);
+      exit (EXIT_FAILURE);
+    }
+
+  /* wait and reap last child */
+  hWaitPID = process_wait_for_any (1, 0);
+  while (hWaitPID)
+    {
+      /* was an error found on this process? */
+      int err = process_last_err (hWaitPID);
+
+      /* get exit data */
+      exit_code = process_exit_code (hWaitPID);
+
+      if (err)
+          fprintf (stderr, "make (e=%d, rc=%d): %s",
+                   err, exit_code, map_windows32_error_to_string (err));
+
+      /* cleanup process */
+      process_cleanup (hWaitPID);
+
+      /* expect to find only last pid, warn about other pids reaped */
+      if (hWaitPID == hPID)
+          break;
+      else
+        {
+          char *pidstr = xstrdup (pid2str ((pid_t)hWaitPID));
+
+          fprintf (stderr,
+                   _("make reaped child pid %s, still waiting for pid %s\n"),
+                   pidstr, pid2str ((pid_t)hPID));
+          free (pidstr);
+        }
+    }
+
+  /* return child's exit code as our exit code */
+  exit (exit_code);
+# else  /* CONFIG_NEW_WIN_CHILDREN */
+
+# endif /* CONFIG_NEW_WIN_CHILDREN */
+#else  /* !WINDOWS32 */
+
+# ifdef __EMX__
+  int pid;
+# endif
+
+  /* Be the user, permanently.  */
+  child_access ();
+
+# ifdef __EMX__
+  /* Run the program.  */
+  pid = spawnvpe (P_NOWAIT, argv[0], argv, envp);
+  if (pid >= 0)
+    return pid;
+
+  /* the file might have a strange shell extension */
+  if (errno == ENOENT)
+    errno = ENOEXEC;
+
+# else
+  /* Run the program.  */
+  environ = envp;
+  execvp (argv[0], argv);
+
+# endif /* !__EMX__ */
+
+  switch (errno)
+    {
+    case ENOENT:
+      /* We are in the child: don't use the output buffer.
+         It's not right to run fprintf() here!  */
+      if (makelevel == 0)
+        fprintf (stderr, _("%s: %s: Command not found\n"), program, argv[0]);
+      else
+        fprintf (stderr, _("%s[%u]: %s: Command not found\n"),
+                 program, makelevel, argv[0]);
+      break;
+    case ENOEXEC:
+      {
+        /* The file is not executable.  Try it as a shell script.  */
+        const char *shell;
+        char **new_argv;
+        int argc;
+        int i=1;
+
+# ifdef __EMX__
+        /* Do not use $SHELL from the environment */
+        struct variable *p = lookup_variable ("SHELL", 5);
+        if (p)
+          shell = p->value;
+        else
+          shell = 0;
+# else
+        shell = getenv ("SHELL");
+# endif
+        if (shell == 0)
+          shell = default_shell;
+
+        argc = 1;
+        while (argv[argc] != 0)
+          ++argc;
+
+# ifdef __EMX__
+        if (!unixy_shell)
+          ++argc;
+# endif
+
+        new_argv = alloca ((1 + argc + 1) * sizeof (char *));
+        new_argv[0] = (char *)shell;
+
+# ifdef __EMX__
+        if (!unixy_shell)
+          {
+            new_argv[1] = "/c";
+            ++i;
+            --argc;
+          }
+# endif
+
+        new_argv[i] = argv[0];
+        while (argc > 0)
+          {
+            new_argv[i + argc] = argv[argc];
+            --argc;
+          }
+
+# ifdef __EMX__
+        pid = spawnvpe (P_NOWAIT, shell, new_argv, envp);
+        if (pid >= 0)
+          break;
+# else
+        execvp (shell, new_argv);
+# endif
+        if (errno == ENOENT)
+          OS (error, NILF, _("%s: Shell program not found"), shell);
+        else
+          perror_with_name ("execvp: ", shell);
+        break;
+      }
+
+# ifdef __EMX__
+    case EINVAL:
+      /* this nasty error was driving me nuts :-( */
+      O (error, NILF, _("spawnvpe: environment space might be exhausted"));
+      /* FALLTHROUGH */
+# endif
+
+    default:
+      perror_with_name ("execvp: ", argv[0]);
+      break;
+    }
+
+# ifdef __EMX__
+  return pid;
+# else
+  _exit (127);
+# endif
+#endif /* !WINDOWS32 */
+#endif /* !VMS */
+}
+#else /* On Amiga */
+void
+exec_command (char **argv)
+{
+  MyExecute (argv);
+}
+
+void clean_tmp (void)
+{
+  DeleteFile (amiga_bname);
+}
+
+#endif /* On Amiga */
+#endif /* !defined(WINDOWS32) || !defined(CONFIG_NEW_WIN_CHILDREN) */
+
+#ifndef VMS
+/* Figure out the argument list necessary to run LINE as a command.  Try to
+   avoid using a shell.  This routine handles only ' quoting, and " quoting
+   when no backslash, $ or ' characters are seen in the quotes.  Starting
+   quotes may be escaped with a backslash.  If any of the characters in
+   sh_chars is seen, or any of the builtin commands listed in sh_cmds
+   is the first word of a line, the shell is used.
+
+   If RESTP is not NULL, *RESTP is set to point to the first newline in LINE.
+   If *RESTP is NULL, newlines will be ignored.
+
+   SHELL is the shell to use, or nil to use the default shell.
+   IFS is the value of $IFS, or nil (meaning the default).
+
+   FLAGS is the value of lines_flags for this command line.  It is
+   used in the WINDOWS32 port to check whether + or $(MAKE) were found
+   in this command line, in which case the effect of just_print_flag
+   is overridden.  */
+
+static char **
+construct_command_argv_internal (char *line, char **restp, const char *shell,
+                                 const char *shellflags, const char *ifs,
+                                 int flags, char **batch_filename UNUSED)
+{
+#ifdef __MSDOS__
+  /* MSDOS supports both the stock DOS shell and ports of Unixy shells.
+     We call 'system' for anything that requires ''slow'' processing,
+     because DOS shells are too dumb.  When $SHELL points to a real
+     (unix-style) shell, 'system' just calls it to do everything.  When
+     $SHELL points to a DOS shell, 'system' does most of the work
+     internally, calling the shell only for its internal commands.
+     However, it looks on the $PATH first, so you can e.g. have an
+     external command named 'mkdir'.
+
+     Since we call 'system', certain characters and commands below are
+     actually not specific to COMMAND.COM, but to the DJGPP implementation
+     of 'system'.  In particular:
+
+       The shell wildcard characters are in DOS_CHARS because they will
+       not be expanded if we call the child via 'spawnXX'.
+
+       The ';' is in DOS_CHARS, because our 'system' knows how to run
+       multiple commands on a single line.
+
+       DOS_CHARS also include characters special to 4DOS/NDOS, so we
+       won't have to tell one from another and have one more set of
+       commands and special characters.  */
+  static const char *sh_chars_dos = "*?[];|<>%^&()";
+  static const char *sh_cmds_dos[] =
+    { "break", "call", "cd", "chcp", "chdir", "cls", "copy", "ctty", "date",
+      "del", "dir", "echo", "erase", "exit", "for", "goto", "if", "md",
+      "mkdir", "path", "pause", "prompt", "rd", "rmdir", "rem", "ren",
+      "rename", "set", "shift", "time", "type", "ver", "verify", "vol", ":",
+      0 };
+
+  static const char *sh_chars_sh = "#;\"*?[]&|<>(){}$`^";
+  static const char *sh_cmds_sh[] =
+    { "cd", "echo", "eval", "exec", "exit", "login", "logout", "set", "umask",
+      "wait", "while", "for", "case", "if", ":", ".", "break", "continue",
+      "export", "read", "readonly", "shift", "times", "trap", "switch",
+      "unset", "ulimit", 0 };
+
+  const char *sh_chars;
+  const char **sh_cmds;
+
+#elif defined (__EMX__)
+  static const char *sh_chars_dos = "*?[];|<>%^&()";
+  static const char *sh_cmds_dos[] =
+    { "break", "call", "cd", "chcp", "chdir", "cls", "copy", "ctty", "date",
+      "del", "dir", "echo", "erase", "exit", "for", "goto", "if", "md",
+      "mkdir", "path", "pause", "prompt", "rd", "rmdir", "rem", "ren",
+      "rename", "set", "shift", "time", "type", "ver", "verify", "vol", ":",
+      0 };
+
+  static const char *sh_chars_os2 = "*?[];|<>%^()\"'&";
+  static const char *sh_cmds_os2[] =
+    { "call", "cd", "chcp", "chdir", "cls", "copy", "date", "del", "detach",
+      "dir", "echo", "endlocal", "erase", "exit", "for", "goto", "if", "keys",
+      "md", "mkdir", "move", "path", "pause", "prompt", "rd", "rem", "ren",
+      "rename", "rmdir", "set", "setlocal", "shift", "start", "time", "type",
+      "ver", "verify", "vol", ":", 0 };
+
+  static const char *sh_chars_sh = "#;\"*?[]&|<>(){}$`^~'";
+  static const char *sh_cmds_sh[] =
+    { "echo", "cd", "eval", "exec", "exit", "login", "logout", "set", "umask",
+      "wait", "while", "for", "case", "if", ":", ".", "break", "continue",
+      "export", "read", "readonly", "shift", "times", "trap", "switch",
+      "unset", 0 };
+
+  const char *sh_chars;
+  const char **sh_cmds;
+
+#elif defined (_AMIGA)
+  static const char *sh_chars = "#;\"|<>()?*$`";
+  static const char *sh_cmds[] =
+    { "cd", "eval", "if", "delete", "echo", "copy", "rename", "set", "setenv",
+      "date", "makedir", "skip", "else", "endif", "path", "prompt", "unset",
+      "unsetenv", "version", 0 };
+
+#elif defined (WINDOWS32)
+  /* We used to have a double quote (") in sh_chars_dos[] below, but
+     that caused any command line with quoted file names be run
+     through a temporary batch file, which introduces command-line
+     limit of 4K charcaters imposed by cmd.exe.  Since CreateProcess
+     can handle quoted file names just fine, removing the quote lifts
+     the limit from a very frequent use case, because using quoted
+     file names is commonplace on MS-Windows.  */
+  static const char *sh_chars_dos = "|&<>";
+  static const char *sh_cmds_dos[] =
+    { "assoc", "break", "call", "cd", "chcp", "chdir", "cls", "color", "copy",
+      "ctty", "date", "del", "dir", "echo", "echo.", "endlocal", "erase",
+      "exit", "for", "ftype", "goto", "if", "if", "md", "mkdir", "move",
+      "path", "pause", "prompt", "rd", "rem", "ren", "rename", "rmdir",
+      "set", "setlocal", "shift", "time", "title", "type", "ver", "verify",
+      "vol", ":", 0 };
+
+  static const char *sh_chars_sh = "#;\"*?[]&|<>(){}$`^";
+  static const char *sh_cmds_sh[] =
+    { "cd", "eval", "exec", "exit", "login", "logout", "set", "umask", "wait",
+      "while", "for", "case", "if", ":", ".", "break", "continue", "export",
+      "read", "readonly", "shift", "times", "trap", "switch", "test",
+#ifdef BATCH_MODE_ONLY_SHELL
+      "echo",
+#endif
+      0 };
+
+  const char *sh_chars;
+  char const * const * sh_cmds;                                                /* kmk: +_sh +const*2 */
+#elif defined(__riscos__)
+  static const char *sh_chars = "";
+  static const char *sh_cmds[] = { 0 };
+#else  /* must be UNIX-ish */
+  static const char *sh_chars_sh = "#;\"*?[]&|<>(){}$`^~!";                     /* kmk: +_sh */
+  static const char *sh_cmds_sh[] =                                             /* kmk: +_sh */
+  { ".", ":", "break", "case", "cd", "continue", "eval", "exec", "exit", 
+    "export", "for", "if", "login", "logout", "read", "readonly", "set",
+    "shift", "switch", "test", "times", "trap", "ulimit", "umask", "unset", 
+    "wait", "while", 0 };
+
+# if 0 /*def HAVE_DOS_PATHS - kmk */
+  /* This is required if the MSYS/Cygwin ports (which do not define
+     WINDOWS32) are compiled with HAVE_DOS_PATHS defined, which uses
+     sh_chars_sh directly (see below).  The value must be identical
+     to that of sh_chars immediately above.  */
+  static const char *sh_chars_sh =  "#;\"*?[]&|<>(){}$`^~!";
+# endif  /* HAVE_DOS_PATHS */
+  char const *  sh_chars = sh_chars_sh;                                                /* kmk: +_sh +const */
+  char const * const * sh_cmds = sh_cmds_sh;                                           /* kmk: +_sh +const*2 */
+#endif
+#ifdef KMK
+  static const char sh_chars_kash[] = "#;*?[]&|<>(){}$`^~!";                          /* note: no \" - good idea? */
+  static const char * const sh_cmds_kash[] = {
+      ".", ":", "break", "case", "cd", "continue", "echo", "eval", "exec", "exit", 
+      "export", "for", "if", "login", "logout", "read", "readonly", "set", 
+      "shift", "switch", "test", "times", "trap", "umask", "wait", "while", 0 /* +echo, -ulimit, -unset */
+  };
+  int is_kmk_shell = 0;
+#endif
+  int i;
+  char *p;
+#ifndef NDEBUG
+  char *end;
+#endif
+  char *ap;
+  const char *cap;
+  const char *cp;
+  int instring, word_has_equals, seen_nonequals, last_argument_was_empty;
+  char **new_argv = 0;
+  char *argstr = 0;
+#ifdef WINDOWS32
+  int slow_flag = 0;
+
+  if (!unixy_shell)
+    {
+      sh_cmds = sh_cmds_dos;
+      sh_chars = sh_chars_dos;
+    }
+  else
+    {
+      sh_cmds = sh_cmds_sh;
+      sh_chars = sh_chars_sh;
+    }
+#endif /* WINDOWS32 */
+
+  if (restp != NULL)
+    *restp = NULL;
+
+  /* Make sure not to bother processing an empty line but stop at newline.  */
+  while (ISBLANK (*line))
+    ++line;
+  if (*line == '\0')
+    return 0;
+
+  if (shellflags == 0)
+    shellflags = posix_pedantic ? "-ec" : "-c";
+
+  /* See if it is safe to parse commands internally.  */
+#ifdef KMK /* kmk_ash and kmk_kash are both fine, kmk_ash is the default btw. */
+  if (shell == 0)
+    {
+      is_kmk_shell = 1;
+      shell = (char *)get_default_kbuild_shell ();
+    }
+  else if (!strcmp (shell, get_default_kbuild_shell()))
+    is_kmk_shell = 1;
+  else
+    {
+      const char *psz = strstr (shell, "/kmk_ash");
+      if (psz)
+        psz += sizeof ("/kmk_ash") - 1;
+      else
+        {
+          psz = strstr (shell, "/kmk_kash");
+          if (psz)
+            psz += sizeof ("/kmk_kash") - 1;
+        }
+# if defined (__OS2__) || defined (_WIN32) || defined (WINDOWS32)
+      is_kmk_shell = psz && (*psz == '\0' || !stricmp (psz, ".exe"));
+# else
+      is_kmk_shell = psz && *psz == '\0';
+# endif
+    }
+  if (is_kmk_shell)
+    {
+      sh_chars = sh_chars_kash;
+      sh_cmds = sh_cmds_kash;
+    }
+#else /* !KMK */
+  if (shell == 0)
+    shell = default_shell;
+#endif /* !KMK */
+#ifdef WINDOWS32
+  else if (strcmp (shell, default_shell))
+  {
+    char *s1 = _fullpath (NULL, shell, 0);
+    char *s2 = _fullpath (NULL, default_shell, 0);
+
+    slow_flag = strcmp ((s1 ? s1 : ""), (s2 ? s2 : ""));
+
+    free (s1);
+    free (s2);
+  }
+  if (slow_flag)
+    goto slow;
+#else  /* not WINDOWS32 */
+#if defined (__MSDOS__) || defined (__EMX__)
+  else if (strcasecmp (shell, default_shell))
+    {
+      extern int _is_unixy_shell (const char *_path);
+
+      DB (DB_BASIC, (_("$SHELL changed (was '%s', now '%s')\n"),
+                     default_shell, shell));
+      unixy_shell = _is_unixy_shell (shell);
+      /* we must allocate a copy of shell: construct_command_argv() will free
+       * shell after this function returns.  */
+      default_shell = xstrdup (shell);
+    }
+#  ifdef KMK
+  if (is_kmk_shell)
+  { /* done above already */ }
+  else
+#   endif
+  if (unixy_shell)
+    {
+      sh_chars = sh_chars_sh;
+      sh_cmds  = sh_cmds_sh;
+    }
+  else
+    {
+      sh_chars = sh_chars_dos;
+      sh_cmds  = sh_cmds_dos;
+# ifdef __EMX__
+      if (_osmode == OS2_MODE)
+        {
+          sh_chars = sh_chars_os2;
+          sh_cmds = sh_cmds_os2;
+        }
+# endif
+    }
+#else  /* !__MSDOS__ */
+  else if (strcmp (shell, default_shell))
+    goto slow;
+#endif /* !__MSDOS__ && !__EMX__ */
+#endif /* not WINDOWS32 */
+
+  if (ifs)
+    for (cap = ifs; *cap != '\0'; ++cap)
+      if (*cap != ' ' && *cap != '\t' && *cap != '\n')
+        goto slow;
+
+  if (shellflags)
+    if (shellflags[0] != '-'
+        || ((shellflags[1] != 'c' || shellflags[2] != '\0')
+            && (shellflags[1] != 'e' || shellflags[2] != 'c' || shellflags[3] != '\0')))
+      goto slow;
+
+  i = strlen (line) + 1;
+
+  /* More than 1 arg per character is impossible.  */
+  new_argv = xmalloc (i * sizeof (char *));
+
+  /* All the args can fit in a buffer as big as LINE is.   */
+  ap = new_argv[0] = argstr = xmalloc (i);
+#ifndef NDEBUG
+  end = ap + i;
+#endif
+
+  /* I is how many complete arguments have been found.  */
+  i = 0;
+  instring = word_has_equals = seen_nonequals = last_argument_was_empty = 0;
+  for (p = line; *p != '\0'; ++p)
+    {
+      assert (ap <= end);
+
+      if (instring)
+        {
+          /* Inside a string, just copy any char except a closing quote
+             or a backslash-newline combination.  */
+          if (*p == instring)
+            {
+              instring = 0;
+              if (ap == new_argv[0] || *(ap-1) == '\0')
+                last_argument_was_empty = 1;
+            }
+          else if (*p == '\\' && p[1] == '\n')
+            {
+              /* Backslash-newline is handled differently depending on what
+                 kind of string we're in: inside single-quoted strings you
+                 keep them; in double-quoted strings they disappear.  For
+                 DOS/Windows/OS2, if we don't have a POSIX shell, we keep the
+                 pre-POSIX behavior of removing the backslash-newline.  */
+              if (instring == '"'
+#if defined (__MSDOS__) || defined (__EMX__) || defined (WINDOWS32)
+                  || !unixy_shell
+#endif
+                  )
+                ++p;
+              else
+                {
+                  *(ap++) = *(p++);
+                  *(ap++) = *p;
+                }
+            }
+          else if (*p == '\n' && restp != NULL)
+            {
+              /* End of the command line.  */
+              *restp = p;
+              goto end_of_line;
+            }
+          /* Backslash, $, and ` are special inside double quotes.
+             If we see any of those, punt.
+             But on MSDOS, if we use COMMAND.COM, double and single
+             quotes have the same effect.  */
+          else if (instring == '"' && strchr ("\\$`", *p) != 0 && unixy_shell)
+            goto slow;
+#ifdef WINDOWS32
+          /* Quoted wildcard characters must be passed quoted to the
+             command, so give up the fast route.  */
+          else if (instring == '"' && strchr ("*?", *p) != 0 && !unixy_shell)
+            goto slow;
+          else if (instring == '"' && strncmp (p, "\\\"", 2) == 0)
+            *ap++ = *++p;
+#endif
+          else
+            *ap++ = *p;
+        }
+      else if (strchr (sh_chars, *p) != 0)
+#ifdef KMK
+        {
+          /* Tilde is only special if at the start of a path spec,
+             i.e. don't get excited when we by 8.3 files on windows. */
+          if (   *p == '~'
+              && p > line
+              && !ISSPACE (p[-1])
+              && p[-1] != '='
+              && p[-1] != ':'
+              && p[-1] != '"'
+              && p[-1] != '\'')
+            *ap++ = *p;
+          else
+            /* Not inside a string, but it's a special char.  */
+            goto slow;
+        }
+#else  /* !KMK */
+        /* Not inside a string, but it's a special char.  */
+        goto slow;
+#endif /* !KMK */
+      else if (one_shell && *p == '\n')
+        /* In .ONESHELL mode \n is a separator like ; or && */
+        goto slow;
+#ifdef  __MSDOS__
+      else if (*p == '.' && p[1] == '.' && p[2] == '.' && p[3] != '.')
+        /* '...' is a wildcard in DJGPP.  */
+        goto slow;
+#endif
+      else
+        /* Not a special char.  */
+        switch (*p)
+          {
+          case '=':
+            /* Equals is a special character in leading words before the
+               first word with no equals sign in it.  This is not the case
+               with sh -k, but we never get here when using nonstandard
+               shell flags.  */
+            if (! seen_nonequals && unixy_shell)
+              goto slow;
+            word_has_equals = 1;
+            *ap++ = '=';
+            break;
+
+          case '\\':
+            /* Backslash-newline has special case handling, ref POSIX.
+               We're in the fastpath, so emulate what the shell would do.  */
+            if (p[1] == '\n')
+              {
+                /* Throw out the backslash and newline.  */
+                ++p;
+
+                /* At the beginning of the argument, skip any whitespace other
+                   than newline before the start of the next word.  */
+                if (ap == new_argv[i])
+                  while (ISBLANK (p[1]))
+                    ++p;
+              }
+#ifdef WINDOWS32
+            /* Backslash before whitespace is not special if our shell
+               is not Unixy.  */
+            else if (ISSPACE (p[1]) && !unixy_shell)
+              {
+                *ap++ = *p;
+                break;
+              }
+#endif
+            else if (p[1] != '\0')
+              {
+#ifdef HAVE_DOS_PATHS
+                /* Only remove backslashes before characters special to Unixy
+                   shells.  All other backslashes are copied verbatim, since
+                   they are probably DOS-style directory separators.  This
+                   still leaves a small window for problems, but at least it
+                   should work for the vast majority of naive users.  */
+
+#ifdef __MSDOS__
+                /* A dot is only special as part of the "..."
+                   wildcard.  */
+                if (strneq (p + 1, ".\\.\\.", 5))
+                  {
+                    *ap++ = '.';
+                    *ap++ = '.';
+                    p += 4;
+                  }
+                else
+#endif
+                  if (p[1] != '\\' && p[1] != '\''
+                      && !ISSPACE (p[1])
+# ifdef KMK
+                      && strchr (sh_chars, p[1]) == 0
+                      && (p[1] != '"' || !unixy_shell))
+# else
+                      && strchr (sh_chars_sh, p[1]) == 0)
+# endif
+                    /* back up one notch, to copy the backslash */
+                    --p;
+#endif  /* HAVE_DOS_PATHS */
+
+                /* Copy and skip the following char.  */
+                *ap++ = *++p;
+              }
+            break;
+
+          case '\'':
+          case '"':
+            instring = *p;
+            break;
+
+          case '\n':
+            if (restp != NULL)
+              {
+                /* End of the command line.  */
+                *restp = p;
+                goto end_of_line;
+              }
+            else
+              /* Newlines are not special.  */
+              *ap++ = '\n';
+            break;
+
+          case ' ':
+          case '\t':
+            /* We have the end of an argument.
+               Terminate the text of the argument.  */
+            *ap++ = '\0';
+            new_argv[++i] = ap;
+            last_argument_was_empty = 0;
+
+            /* Update SEEN_NONEQUALS, which tells us if every word
+               heretofore has contained an '='.  */
+            seen_nonequals |= ! word_has_equals;
+            if (word_has_equals && ! seen_nonequals)
+              /* An '=' in a word before the first
+                 word without one is magical.  */
+              goto slow;
+            word_has_equals = 0; /* Prepare for the next word.  */
+
+            /* If this argument is the command name,
+               see if it is a built-in shell command.
+               If so, have the shell handle it.  */
+            if (i == 1)
+              {
+                register int j;
+                for (j = 0; sh_cmds[j] != 0; ++j)
+                  {
+                    if (streq (sh_cmds[j], new_argv[0]))
+                      goto slow;
+#if defined(__EMX__) || defined(WINDOWS32)
+                    /* Non-Unix shells are case insensitive.  */
+                    if (!unixy_shell
+                        && strcasecmp (sh_cmds[j], new_argv[0]) == 0)
+                      goto slow;
+#endif
+                  }
+              }
+
+            /* Skip whitespace chars, but not newlines.  */
+            while (ISBLANK (p[1]))
+              ++p;
+            break;
+
+          default:
+            *ap++ = *p;
+            break;
+          }
+    }
+ end_of_line:
+
+  if (instring)
+    /* Let the shell deal with an unterminated quote.  */
+    goto slow;
+
+  /* Terminate the last argument and the argument list.  */
+
+  *ap = '\0';
+  if (new_argv[i][0] != '\0' || last_argument_was_empty)
+    ++i;
+  new_argv[i] = 0;
+
+  if (i == 1)
+    {
+      register int j;
+      for (j = 0; sh_cmds[j] != 0; ++j)
+        if (streq (sh_cmds[j], new_argv[0]))
+          goto slow;
+    }
+
+  if (new_argv[0] == 0)
+    {
+      /* Line was empty.  */
+      free (argstr);
+      free (new_argv);
+      return 0;
+    }
+
+  return new_argv;
+
+ slow:;
+  /* We must use the shell.  */
+
+  if (new_argv != 0)
+    {
+      /* Free the old argument list we were working on.  */
+      free (argstr);
+      free (new_argv);
+    }
+
+#ifdef __MSDOS__
+  execute_by_shell = 1; /* actually, call 'system' if shell isn't unixy */
+#endif
+
+#ifdef _AMIGA
+  {
+    char *ptr;
+    char *buffer;
+    char *dptr;
+
+    buffer = xmalloc (strlen (line)+1);
+
+    ptr = line;
+    for (dptr=buffer; *ptr; )
+    {
+      if (*ptr == '\\' && ptr[1] == '\n')
+        ptr += 2;
+      else if (*ptr == '@') /* Kludge: multiline commands */
+      {
+        ptr += 2;
+        *dptr++ = '\n';
+      }
+      else
+        *dptr++ = *ptr++;
+    }
+    *dptr = 0;
+
+    new_argv = xmalloc (2 * sizeof (char *));
+    new_argv[0] = buffer;
+    new_argv[1] = 0;
+  }
+#else   /* Not Amiga  */
+#ifdef WINDOWS32
+  /*
+   * Not eating this whitespace caused things like
+   *
+   *    sh -c "\n"
+   *
+   * which gave the shell fits. I think we have to eat
+   * whitespace here, but this code should be considered
+   * suspicious if things start failing....
+   */
+
+  /* Make sure not to bother processing an empty line.  */
+  NEXT_TOKEN (line);
+  if (*line == '\0')
+    return 0;
+#endif /* WINDOWS32 */
+
+  {
+    /* SHELL may be a multi-word command.  Construct a command line
+       "$(SHELL) $(.SHELLFLAGS) LINE", with all special chars in LINE escaped.
+       Then recurse, expanding this command line to get the final
+       argument list.  */
+
+    char *new_line;
+    unsigned int shell_len = strlen (shell);
+    unsigned int line_len = strlen (line);
+    unsigned int sflags_len = shellflags ? strlen (shellflags) : 0;
+#ifdef WINDOWS32
+    char *command_ptr = NULL; /* used for batch_mode_shell mode */
+#endif
+
+# ifdef __EMX__ /* is this necessary? */
+    if (!unixy_shell && shellflags)
+      ((char *)shellflags)[0] = '/'; /* "/c" */
+# endif
+
+    /* In .ONESHELL mode we are allowed to throw the entire current
+        recipe string at a single shell and trust that the user
+        has configured the shell and shell flags, and formatted
+        the string, appropriately. */
+    if (one_shell)
+      {
+        /* If the shell is Bourne compatible, we must remove and ignore
+           interior special chars [@+-] because they're meaningless to
+           the shell itself. If, however, we're in .ONESHELL mode and
+           have changed SHELL to something non-standard, we should
+           leave those alone because they could be part of the
+           script. In this case we must also leave in place
+           any leading [@+-] for the same reason.  */
+
+        /* Remove and ignore interior prefix chars [@+-] because they're
+             meaningless given a single shell. */
+#if defined __MSDOS__ || defined (__EMX__)
+        if (unixy_shell)     /* the test is complicated and we already did it */
+#else
+        if (is_bourne_compatible_shell (shell)
+#ifdef WINDOWS32
+            /* If we didn't find any sh.exe, don't behave is if we did!  */
+            && !no_default_sh_exe
+#endif
+            )
+#endif
+          {
+            const char *f = line;
+            char *t = line;
+
+            /* Copy the recipe, removing and ignoring interior prefix chars
+               [@+-]: they're meaningless in .ONESHELL mode.  */
+            while (f[0] != '\0')
+              {
+                int esc = 0;
+
+                /* This is the start of a new recipe line.  Skip whitespace
+                   and prefix characters but not newlines.  */
+#ifndef CONFIG_WITH_COMMANDS_FUNC
+                while (ISBLANK (*f) || *f == '-' || *f == '@' || *f == '+')
+#else
+                char ch;
+                while (ISBLANK ((ch = *f)) || ch == '-' || ch == '@' || ch == '+' || ch == '%')
+#endif
+                  ++f;
+
+                /* Copy until we get to the next logical recipe line.  */
+                while (*f != '\0')
+                  {
+                    *(t++) = *(f++);
+                    if (f[-1] == '\\')
+                      esc = !esc;
+                    else
+                      {
+                        /* On unescaped newline, we're done with this line.  */
+                        if (f[-1] == '\n' && ! esc)
+                          break;
+
+                        /* Something else: reset the escape sequence.  */
+                        esc = 0;
+                      }
+                  }
+              }
+            *t = '\0';
+          }
+#ifdef WINDOWS32
+        else    /* non-Posix shell (cmd.exe etc.) */
+          {
+            const char *f = line;
+            char *t = line;
+            char *tstart = t;
+            int temp_fd;
+            FILE* batch = NULL;
+            int id = GetCurrentProcessId ();
+            PATH_VAR(fbuf);
+
+            /* Generate a file name for the temporary batch file.  */
+            sprintf (fbuf, "make%d", id);
+            *batch_filename = create_batch_file (fbuf, 0, &temp_fd);
+            DB (DB_JOBS, (_("Creating temporary batch file %s\n"),
+                          *batch_filename));
+
+            /* Create a FILE object for the batch file, and write to it the
+               commands to be executed.  Put the batch file in TEXT mode.  */
+            _setmode (temp_fd, _O_TEXT);
+            batch = _fdopen (temp_fd, "wt");
+            fputs ("@echo off\n", batch);
+            DB (DB_JOBS, (_("Batch file contents:\n\t@echo off\n")));
+
+            /* Copy the recipe, removing and ignoring interior prefix chars
+               [@+-]: they're meaningless in .ONESHELL mode.  */
+            while (*f != '\0')
+              {
+                /* This is the start of a new recipe line.  Skip whitespace
+                   and prefix characters but not newlines.  */
+#ifndef CONFIG_WITH_COMMANDS_FUNC
+                while (ISBLANK (*f) || *f == '-' || *f == '@' || *f == '+')
+#else
+                char ch;
+                while (ISBLANK ((ch = *f)) || ch == '-' || ch == '@' || ch == '+' || ch == '%')
+#endif
+                  ++f;
+
+                /* Copy until we get to the next logical recipe line.  */
+                while (*f != '\0')
+                  {
+                    /* Remove the escaped newlines in the command, and the
+                       blanks that follow them.  Windows shells cannot handle
+                       escaped newlines.  */
+                    if (*f == '\\' && f[1] == '\n')
+                      {
+                        f += 2;
+                        while (ISBLANK (*f))
+                          ++f;
+                      }
+                    *(t++) = *(f++);
+                    /* On an unescaped newline, we're done with this
+                       line.  */
+                    if (f[-1] == '\n')
+                      break;
+                  }
+                /* Write another line into the batch file.  */
+                if (t > tstart)
+                  {
+                    char c = *t;
+                    *t = '\0';
+                    fputs (tstart, batch);
+                    DB (DB_JOBS, ("\t%s", tstart));
+                    tstart = t;
+                    *t = c;
+                  }
+              }
+            DB (DB_JOBS, ("\n"));
+            fclose (batch);
+
+            /* Create an argv list for the shell command line that
+               will run the batch file.  */
+            new_argv = xmalloc (2 * sizeof (char *));
+            new_argv[0] = xstrdup (*batch_filename);
+            new_argv[1] = NULL;
+            return new_argv;
+          }
+#endif /* WINDOWS32 */
+        /* Create an argv list for the shell command line.  */
+        {
+          int n = 0;
+
+          new_argv = xmalloc ((4 + sflags_len/2) * sizeof (char *));
+          new_argv[n++] = xstrdup (shell);
+
+          /* Chop up the shellflags (if any) and assign them.  */
+          if (! shellflags)
+            new_argv[n++] = xstrdup ("");
+          else
+            {
+              const char *s = shellflags;
+              char *t;
+              unsigned int len;
+              while ((t = find_next_token (&s, &len)) != 0)
+                new_argv[n++] = xstrndup (t, len);
+            }
+
+          /* Set the command to invoke.  */
+          new_argv[n++] = line;
+          new_argv[n++] = NULL;
+        }
+        return new_argv;
+      }
+
+    new_line = xmalloc ((shell_len*2) + 1 + sflags_len + 1
+                        + (line_len*2) + 1);
+    ap = new_line;
+    /* Copy SHELL, escaping any characters special to the shell.  If
+       we don't escape them, construct_command_argv_internal will
+       recursively call itself ad nauseam, or until stack overflow,
+       whichever happens first.  */
+    for (cp = shell; *cp != '\0'; ++cp)
+      {
+        if (strchr (sh_chars, *cp) != 0)
+          *(ap++) = '\\';
+        *(ap++) = *cp;
+      }
+    *(ap++) = ' ';
+    if (shellflags)
+      memcpy (ap, shellflags, sflags_len);
+    ap += sflags_len;
+    *(ap++) = ' ';
+#ifdef WINDOWS32
+    command_ptr = ap;
+#endif
+    for (p = line; *p != '\0'; ++p)
+      {
+        if (restp != NULL && *p == '\n')
+          {
+            *restp = p;
+            break;
+          }
+        else if (*p == '\\' && p[1] == '\n')
+          {
+            /* POSIX says we keep the backslash-newline.  If we don't have a
+               POSIX shell on DOS/Windows/OS2, mimic the pre-POSIX behavior
+               and remove the backslash/newline.  */
+#if defined (__MSDOS__) || defined (__EMX__) || defined (WINDOWS32)
+# define PRESERVE_BSNL  unixy_shell
+#else
+# define PRESERVE_BSNL  1
+#endif
+            if (PRESERVE_BSNL)
+              {
+                *(ap++) = '\\';
+                /* Only non-batch execution needs another backslash,
+                   because it will be passed through a recursive
+                   invocation of this function.  */
+                if (!batch_mode_shell)
+                  *(ap++) = '\\';
+                *(ap++) = '\n';
+              }
+            ++p;
+            continue;
+          }
+
+        /* DOS shells don't know about backslash-escaping.  */
+        if (unixy_shell && !batch_mode_shell &&
+            (*p == '\\' || *p == '\'' || *p == '"'
+             || ISSPACE (*p)
+             || strchr (sh_chars, *p) != 0))
+          *ap++ = '\\';
+#ifdef __MSDOS__
+        else if (unixy_shell && strneq (p, "...", 3))
+          {
+            /* The case of '...' wildcard again.  */
+            strcpy (ap, "\\.\\.\\");
+            ap += 5;
+            p  += 2;
+          }
+#endif
+        *ap++ = *p;
+      }
+    if (ap == new_line + shell_len + sflags_len + 2)
+      {
+        /* Line was empty.  */
+        free (new_line);
+        return 0;
+      }
+    *ap = '\0';
+
+#ifdef WINDOWS32
+    /* Some shells do not work well when invoked as 'sh -c xxx' to run a
+       command line (e.g. Cygnus GNUWIN32 sh.exe on WIN32 systems).  In these
+       cases, run commands via a script file.  */
+    if (just_print_flag && !(flags & COMMANDS_RECURSE))
+      {
+        /* Need to allocate new_argv, although it's unused, because
+           start_job_command will want to free it and its 0'th element.  */
+        new_argv = xmalloc (2 * sizeof (char *));
+        new_argv[0] = xstrdup ("");
+        new_argv[1] = NULL;
+      }
+    else if ((no_default_sh_exe || batch_mode_shell) && batch_filename)
+      {
+        int temp_fd;
+        FILE* batch = NULL;
+        int id = GetCurrentProcessId ();
+        PATH_VAR (fbuf);
+
+        /* create a file name */
+        sprintf (fbuf, "make%d", id);
+        *batch_filename = create_batch_file (fbuf, unixy_shell, &temp_fd);
+
+        DB (DB_JOBS, (_("Creating temporary batch file %s\n"),
+                      *batch_filename));
+
+        /* Create a FILE object for the batch file, and write to it the
+           commands to be executed.  Put the batch file in TEXT mode.  */
+        _setmode (temp_fd, _O_TEXT);
+        batch = _fdopen (temp_fd, "wt");
+        if (!unixy_shell)
+          fputs ("@echo off\n", batch);
+        fputs (command_ptr, batch);
+        fputc ('\n', batch);
+        fclose (batch);
+        DB (DB_JOBS, (_("Batch file contents:%s\n\t%s\n"),
+                      !unixy_shell ? "\n\t@echo off" : "", command_ptr));
+
+        /* create argv */
+        new_argv = xmalloc (3 * sizeof (char *));
+        if (unixy_shell)
+          {
+            new_argv[0] = xstrdup (shell);
+            new_argv[1] = *batch_filename; /* only argv[0] gets freed later */
+          }
+        else
+          {
+            new_argv[0] = xstrdup (*batch_filename);
+            new_argv[1] = NULL;
+          }
+        new_argv[2] = NULL;
+      }
+    else
+#endif /* WINDOWS32 */
+
+    if (unixy_shell)
+      new_argv = construct_command_argv_internal (new_line, 0, 0, 0, 0,
+                                                  flags, 0);
+
+#ifdef __EMX__
+    else if (!unixy_shell)
+      {
+        /* new_line is local, must not be freed therefore
+           We use line here instead of new_line because we run the shell
+           manually.  */
+        size_t line_len = strlen (line);
+        char *p = new_line;
+        char *q = new_line;
+        memcpy (new_line, line, line_len + 1);
+        /* Replace all backslash-newline combination and also following tabs.
+           Important: stop at the first '\n' because that's what the loop above
+           did. The next line starting at restp[0] will be executed during the
+           next call of this function. */
+        while (*q != '\0' && *q != '\n')
+          {
+            if (q[0] == '\\' && q[1] == '\n')
+              q += 2; /* remove '\\' and '\n' */
+            else
+              *p++ = *q++;
+          }
+        *p = '\0';
+
+# ifndef NO_CMD_DEFAULT
+        if (strnicmp (new_line, "echo", 4) == 0
+            && (new_line[4] == ' ' || new_line[4] == '\t'))
+          {
+            /* the builtin echo command: handle it separately */
+            size_t echo_len = line_len - 5;
+            char *echo_line = new_line + 5;
+
+            /* special case: echo 'x="y"'
+               cmd works this way: a string is printed as is, i.e., no quotes
+               are removed. But autoconf uses a command like echo 'x="y"' to
+               determine whether make works. autoconf expects the output x="y"
+               so we will do exactly that.
+               Note: if we do not allow cmd to be the default shell
+               we do not need this kind of voodoo */
+            if (echo_line[0] == '\''
+                && echo_line[echo_len - 1] == '\''
+                && strncmp (echo_line + 1, "ac_maketemp=",
+                            strlen ("ac_maketemp=")) == 0)
+              {
+                /* remove the enclosing quotes */
+                memmove (echo_line, echo_line + 1, echo_len - 2);
+                echo_line[echo_len - 2] = '\0';
+              }
+          }
+# endif
+
+        {
+          /* Let the shell decide what to do. Put the command line into the
+             2nd command line argument and hope for the best ;-)  */
+          size_t sh_len = strlen (shell);
+
+          /* exactly 3 arguments + NULL */
+          new_argv = xmalloc (4 * sizeof (char *));
+          /* Exactly strlen(shell) + strlen("/c") + strlen(line) + 3 times
+             the trailing '\0' */
+          new_argv[0] = xmalloc (sh_len + line_len + 5);
+          memcpy (new_argv[0], shell, sh_len + 1);
+          new_argv[1] = new_argv[0] + sh_len + 1;
+          memcpy (new_argv[1], "/c", 3);
+          new_argv[2] = new_argv[1] + 3;
+          memcpy (new_argv[2], new_line, line_len + 1);
+          new_argv[3] = NULL;
+        }
+      }
+#elif defined(__MSDOS__)
+    else
+      {
+        /* With MSDOS shells, we must construct the command line here
+           instead of recursively calling ourselves, because we
+           cannot backslash-escape the special characters (see above).  */
+        new_argv = xmalloc (sizeof (char *));
+        line_len = strlen (new_line) - shell_len - sflags_len - 2;
+        new_argv[0] = xmalloc (line_len + 1);
+        strncpy (new_argv[0],
+                 new_line + shell_len + sflags_len + 2, line_len);
+        new_argv[0][line_len] = '\0';
+      }
+#else
+    else
+      fatal (NILF, CSTRLEN (__FILE__) + INTSTR_LENGTH,
+             _("%s (line %d) Bad shell context (!unixy && !batch_mode_shell)\n"),
+            __FILE__, __LINE__);
+#endif
+
+    free (new_line);
+  }
+#endif  /* ! AMIGA */
+
+  return new_argv;
+}
+#endif /* !VMS */
+
+/* Figure out the argument list necessary to run LINE as a command.  Try to
+   avoid using a shell.  This routine handles only ' quoting, and " quoting
+   when no backslash, $ or ' characters are seen in the quotes.  Starting
+   quotes may be escaped with a backslash.  If any of the characters in
+   sh_chars is seen, or any of the builtin commands listed in sh_cmds
+   is the first word of a line, the shell is used.
+
+   If RESTP is not NULL, *RESTP is set to point to the first newline in LINE.
+   If *RESTP is NULL, newlines will be ignored.
+
+   FILE is the target whose commands these are.  It is used for
+   variable expansion for $(SHELL) and $(IFS).  */
+
+char **
+construct_command_argv (char *line, char **restp, struct file *file,
+                        int cmd_flags, char **batch_filename)
+{
+  char *shell, *ifs, *shellflags;
+  char **argv;
+
+#ifdef VMS
+  char *cptr;
+  int argc;
+
+  argc = 0;
+  cptr = line;
+  for (;;)
+    {
+      while ((*cptr != 0) && (ISSPACE (*cptr)))
+        cptr++;
+      if (*cptr == 0)
+        break;
+      while ((*cptr != 0) && (!ISSPACE (*cptr)))
+        cptr++;
+      argc++;
+    }
+
+  argv = xmalloc (argc * sizeof (char *));
+  if (argv == 0)
+    abort ();
+
+  cptr = line;
+  argc = 0;
+  for (;;)
+    {
+      while ((*cptr != 0) && (ISSPACE (*cptr)))
+        cptr++;
+      if (*cptr == 0)
+        break;
+      DB (DB_JOBS, ("argv[%d] = [%s]\n", argc, cptr));
+      argv[argc++] = cptr;
+      while ((*cptr != 0) && (!ISSPACE (*cptr)))
+        cptr++;
+      if (*cptr != 0)
+        *cptr++ = 0;
+    }
+#else
+  {
+    /* Turn off --warn-undefined-variables while we expand SHELL and IFS.  */
+    int save = warn_undefined_variables_flag;
+    warn_undefined_variables_flag = 0;
+
+    shell = allocated_variable_expand_for_file ("$(SHELL)", file);
+#ifdef WINDOWS32
+    /*
+     * Convert to forward slashes so that construct_command_argv_internal()
+     * is not confused.
+     */
+    if (shell)
+      {
+# if 1 /* bird */
+        unix_slashes (shell);
+# else
+        char *p = w32ify (shell, 0);
+        strcpy (shell, p);
+# endif
+      }
+#endif
+#ifdef __EMX__
+    {
+      static const char *unixroot = NULL;
+      static const char *last_shell = "";
+      static int init = 0;
+      if (init == 0)
+        {
+          unixroot = getenv ("UNIXROOT");
+          /* unixroot must be NULL or not empty */
+          if (unixroot && unixroot[0] == '\0') unixroot = NULL;
+          init = 1;
+        }
+
+      /* if we have an unixroot drive and if shell is not default_shell
+         (which means it's either cmd.exe or the test has already been
+         performed) and if shell is an absolute path without drive letter,
+         try whether it exists e.g.: if "/bin/sh" does not exist use
+         "$UNIXROOT/bin/sh" instead.  */
+      if (unixroot && shell && strcmp (shell, last_shell) != 0
+          && (shell[0] == '/' || shell[0] == '\\'))
+        {
+          /* trying a new shell, check whether it exists */
+          size_t size = strlen (shell);
+          char *buf = xmalloc (size + 7);
+          memcpy (buf, shell, size);
+          memcpy (buf + size, ".exe", 5); /* including the trailing '\0' */
+          if (access (shell, F_OK) != 0 && access (buf, F_OK) != 0)
+            {
+              /* try the same for the unixroot drive */
+              memmove (buf + 2, buf, size + 5);
+              buf[0] = unixroot[0];
+              buf[1] = unixroot[1];
+              if (access (buf, F_OK) == 0)
+                /* we have found a shell! */
+                /* free(shell); */
+                shell = buf;
+              else
+                free (buf);
+            }
+          else
+            free (buf);
+        }
+    }
+#endif /* __EMX__ */
+
+    shellflags = allocated_variable_expand_for_file ("$(.SHELLFLAGS)", file);
+    ifs = allocated_variable_expand_for_file ("$(IFS)", file);
+
+    warn_undefined_variables_flag = save;
+  }
+
+# ifdef CONFIG_WITH_KMK_BUILTIN
+  /* If it's a kmk_builtin command, make sure we're treated like a
+     unix shell and and don't get batch files. */
+  if (   (  !unixy_shell
+          || batch_mode_shell
+#  ifdef WINDOWS32
+          || no_default_sh_exe
+#  endif
+         )
+      && line
+      && !strncmp (line, "kmk_builtin_", sizeof("kmk_builtin_") - 1))
+  {
+    int saved_batch_mode_shell = batch_mode_shell;
+    int saved_unixy_shell = unixy_shell;
+#  ifdef WINDOWS32
+    int saved_no_default_sh_exe = no_default_sh_exe;
+    no_default_sh_exe = 0;
+#  endif
+    unixy_shell = 1;
+    batch_mode_shell = 0;
+    argv = construct_command_argv_internal (line, restp, shell, shellflags, ifs,
+                                            cmd_flags, batch_filename);
+    batch_mode_shell = saved_batch_mode_shell;
+    unixy_shell = saved_unixy_shell;
+#  ifdef WINDOWS32
+    no_default_sh_exe = saved_no_default_sh_exe;
+#  endif
+  }
+  else
+# endif /* CONFIG_WITH_KMK_BUILTIN */
+  argv = construct_command_argv_internal (line, restp, shell, shellflags, ifs,
+                                          cmd_flags, batch_filename);
+
+  free (shell);
+  free (shellflags);
+  free (ifs);
+#endif /* !VMS */
+  return argv;
+}
+
+#if !defined(HAVE_DUP2) && !defined(_AMIGA)
+int
+dup2 (int old, int new)
+{
+  int fd;
+
+  (void) close (new);
+  EINTRLOOP (fd, dup (old));
+  if (fd != new)
+    {
+      (void) close (fd);
+      errno = EMFILE;
+      return -1;
+    }
+
+  return fd;
+}
+#endif /* !HAVE_DUP2 && !_AMIGA */
+
+#ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+/* Prints the time elapsed while executing the commands for the given job. */
+void print_job_time (struct child *c)
+{
+  if (   !handling_fatal_signal
+      && print_time_min != -1
+      && c->start_ts != -1)
+    {
+      big_int elapsed = nano_timestamp () - c->start_ts;
+      if (elapsed >= print_time_min * BIG_INT_C(1000000000))
+        {
+          char buf[64];
+          int len = format_elapsed_nano (buf, sizeof (buf), elapsed);
+          if (len > print_time_width)
+            print_time_width = len;
+          message (1, print_time_width + strlen (c->file->name),
+                   _("%*s - %s"), print_time_width, buf, c->file->name);
+        }
+    }
+}
+#endif
+
+/* On VMS systems, include special VMS functions.  */
+
+#ifdef VMS
+#include "vmsjobs.c"
+#endif
diff --git a/src/kmk/job.h b/src/kmk/job.h
new file mode 100644
index 0000000..5cd25c2
--- /dev/null
+++ b/src/kmk/job.h
@@ -0,0 +1,175 @@
+/* Definitions for managing subprocesses in GNU Make.
+Copyright (C) 1992-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "output.h"
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#else
+# include <sys/file.h>
+#endif
+
+/* How to set close-on-exec for a file descriptor.  */
+
+#if !defined(F_SETFD) || !defined(F_GETFD)
+# ifdef WINDOWS32
+#  define CLOSE_ON_EXEC(_d)  process_noinherit(_d)
+# else
+#  define CLOSE_ON_EXEC(_d)
+# endif
+#else
+# ifndef FD_CLOEXEC
+#  define FD_CLOEXEC 1
+# endif
+# define CLOSE_ON_EXEC(_d) (void) fcntl ((_d), F_SETFD, FD_CLOEXEC)
+#endif
+
+#ifdef NO_OUTPUT_SYNC
+# define RECORD_SYNC_MUTEX(m) \
+    O (error, NILF,                                                    \
+       _("-O[TYPE] (--output-sync[=TYPE]) is not configured for this build."));
+#else
+# ifdef WINDOWS32
+/* For emulations in w32/compat/posixfcn.c.  */
+#  define F_GETFD 1
+#  define F_SETLKW 2
+/* Implementation note: None of the values of l_type below can be zero
+   -- they are compared with a static instance of the struct, so zero
+   means unknown/invalid, see w32/compat/posixfcn.c. */
+#  define F_WRLCK 1
+#  define F_UNLCK 2
+
+struct flock
+  {
+    short l_type;
+    short l_whence;
+    off_t l_start;
+    off_t l_len;
+    pid_t l_pid;
+  };
+
+/* This type is actually a HANDLE, but we want to avoid including
+   windows.h as much as possible.  */
+typedef intptr_t sync_handle_t;
+
+/* Public functions emulated/provided in posixfcn.c.  */
+int fcntl (intptr_t fd, int cmd, ...);
+#  ifdef CONFIG_NEW_WIN_CHILDREN
+intptr_t create_mutex (char *mtxname, size_t size);
+#  else
+intptr_t create_mutex (void);
+#  endif
+int same_stream (FILE *f1, FILE *f2);
+
+#  define RECORD_SYNC_MUTEX(m) record_sync_mutex(m)
+void record_sync_mutex (const char *str);
+#  ifdef CONFIG_NEW_WIN_CHILDREN
+void prepare_mutex_handle_string (const char *mtxname);
+#  else
+void prepare_mutex_handle_string (intptr_t hdl);
+#  endif
+# else  /* !WINDOWS32 */
+
+typedef int sync_handle_t;      /* file descriptor */
+
+#  define RECORD_SYNC_MUTEX(m) (void)(m)
+
+# endif
+#endif  /* !NO_OUTPUT_SYNC */
+
+/* Structure describing a running or dead child process.  */
+
+struct child
+  {
+    struct child *next;         /* Link in the chain.  */
+
+    struct file *file;          /* File being remade.  */
+
+    char **environment;         /* Environment for commands.  */
+    char *sh_batch_file;        /* Script file for shell commands */
+    char **command_lines;       /* Array of variable-expanded cmd lines.  */
+    char *command_ptr;          /* Ptr into command_lines[command_line].  */
+
+#ifdef VMS
+    char *comname;              /* Temporary command file name */
+    int efn;                    /* Completion event flag number */
+    int cstatus;                /* Completion status */
+    int vms_launch_status;      /* non-zero if lib$spawn, etc failed */
+#endif
+
+    unsigned int  command_line; /* Index into command_lines.  */
+    struct output output;       /* Output for this child.  */
+    pid_t         pid;          /* Child process's ID number.  */
+    unsigned int  remote:1;     /* Nonzero if executing remotely.  */
+    unsigned int  noerror:1;    /* Nonzero if commands contained a '-'.  */
+    unsigned int  good_stdin:1; /* Nonzero if this child has a good stdin.  */
+    unsigned int  deleted:1;    /* Nonzero if targets have been deleted.  */
+    unsigned int  recursive:1;  /* Nonzero for recursive command ('+' etc.)  */
+    unsigned int  dontcare:1;   /* Saved dontcare flag.  */
+
+#ifdef CONFIG_WITH_KMK_BUILTIN
+    unsigned int has_status:1;  /* Nonzero if status is available. */
+    int status;                 /* Status of the job. */
+#endif
+#ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+    big_int start_ts;           /* nano_timestamp of the first command.  */
+#endif
+  };
+
+extern struct child *children;
+
+/* A signal handler for SIGCHLD, if needed.  */
+RETSIGTYPE child_handler (int sig);
+int is_bourne_compatible_shell(const char *path);
+void new_job (struct file *file);
+void reap_children (int block, int err);
+void start_waiting_jobs (void);
+
+char **construct_command_argv (char *line, char **restp, struct file *file,
+                               int cmd_flags, char** batch_file);
+
+#ifdef VMS
+int child_execute_job (struct child *child, char *argv);
+#else
+# define FD_STDIN       (fileno (stdin))
+# define FD_STDOUT      (fileno (stdout))
+# define FD_STDERR      (fileno (stderr))
+int child_execute_job (struct output *out, int good_stdin, char **argv, char **envp);
+#endif
+
+#ifdef _AMIGA
+void exec_command (char **argv) __attribute__ ((noreturn));
+#elif defined(__EMX__)
+int exec_command (char **argv, char **envp);
+#elif !defined(WINDOWS32) || !defined(CONFIG_NEW_WIN_CHILDREN)
+void exec_command (char **argv, char **envp) __attribute__ ((noreturn));
+#endif
+
+extern unsigned int job_slots_used;
+
+void block_sigs (void);
+#ifdef POSIX
+void unblock_sigs (void);
+#else
+#ifdef  HAVE_SIGSETMASK
+extern int fatal_signal_mask;
+#define unblock_sigs()  sigsetmask (0)
+#else
+#define unblock_sigs()
+#endif
+#endif
+
+extern unsigned int jobserver_tokens;
diff --git a/src/kmk/kbuild-object.c b/src/kmk/kbuild-object.c
new file mode 100644
index 0000000..e295636
--- /dev/null
+++ b/src/kmk/kbuild-object.c
@@ -0,0 +1,1409 @@
+/* $Id: kbuild-object.c 3141 2018-03-14 21:58:32Z bird $ */
+/** @file
+ * kBuild objects.
+ */
+
+/*
+ * Copyright (c) 2011-2014 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/* No GNU coding style here! */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "makeint.h"
+#include "filedef.h"
+#include "variable.h"
+#include "dep.h"
+#include "debug.h"
+#include "kbuild.h"
+
+#include <assert.h>
+#include <stdarg.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+#define WORD_IS(a_pszWord, a_cchWord, a_szWord2) \
+        (  (a_cchWord) == sizeof(a_szWord2) - 1 && memcmp((a_pszWord), a_szWord2, sizeof(a_szWord2) - 1) == 0)
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/** kBuild object type.  */
+enum kBuildType
+{
+    kBuildType_Invalid,
+    kBuildType_Target,
+    kBuildType_Template,
+    kBuildType_Tool,
+    kBuildType_Sdk,
+    kBuildType_Unit
+};
+
+enum kBuildSeverity
+{
+    kBuildSeverity_Warning,
+    kBuildSeverity_Error,
+    kBuildSeverity_Fatal
+};
+
+
+/**
+ * kBuild object data.
+ */
+struct kbuild_object
+{
+    /** The object type. */
+    enum kBuildType             enmType;
+    /** Object name length.  */
+    size_t                      cchName;
+    /** The bare name of the define. */
+    char                       *pszName;
+    /** The file location where this define was declared. */
+    floc                        FileLoc;
+
+    /** Pointer to the next element in the global list. */
+    struct kbuild_object       *pGlobalNext;
+
+    /** The variable set associated with this define. */
+    struct variable_set_list   *pVariables;
+
+    /** The parent name, NULL if none. */
+    char                       *pszParent;
+    /** The length of the parent name. */
+    size_t                      cchParent;
+    /** Pointer to the parent.  Resolved lazily, so it can be NULL even if we
+     * have a parent. */
+    struct kbuild_object       *pParent;
+
+    /** The template, NULL if none.  Only applicable to targets.  Only covers the
+     * primary template, not target or type specific templates.
+     * @todo not sure if this is really necessary. */
+    char const                 *pszTemplate;
+
+    /** The variable prefix. */
+    char                       *pszVarPrefix;
+    /** The length of the variable prefix. */
+    size_t                      cchVarPrefix;
+};
+
+
+/**
+ * The data we stack during eval.
+ */
+struct kbuild_eval_data
+{
+    /** Pointer to the element below us on the stack. */
+    struct kbuild_eval_data    *pStackDown;
+    /** Pointer to the object. */
+    struct kbuild_object       *pObj;
+    /** The saved current variable set, for restoring in kBuild-endef. */
+    struct variable_set_list   *pVariablesSaved;
+};
+
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** Linked list (LIFO) of kBuild defines.
+ * @todo use a hash! */
+static struct kbuild_object    *g_pHeadKbObjs = NULL;
+/** Stack of kBuild evalutation contexts.
+ * This is for dealing with potential recursive kBuild object definition,
+ * generally believed to only happen via $(eval ) or include similar. */
+struct kbuild_eval_data        *g_pTopKbEvalData = NULL;
+
+/** Cached variable name '_TEMPLATE'.  */
+static const char              *g_pszVarNmTemplate = NULL;
+
+/** Zero if compatibility mode is disabled, non-zero if enabled.
+ * If explicitily enabled, the value will be greater than 1. */
+int                             g_fKbObjCompMode = 1;
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static struct kbuild_object *
+resolve_kbuild_object_parent(struct kbuild_object *pObj, int fQuiet);
+static struct kbuild_object *
+get_kbuild_object_parent(struct kbuild_object *pObj, enum kBuildSeverity enmSeverity);
+
+static struct kbuild_object *
+parse_kbuild_object_variable_accessor(const char *pchExpr, size_t cchExpr,
+                                      enum kBuildSeverity enmSeverity, const floc *pFileLoc,
+                                      const char **ppchVarNm, size_t *pcchVarNm, enum kBuildType *penmType);
+
+
+/**
+ * Initializes the kBuild object stuff.
+ *
+ * Requires the variable_cache to be initialized.
+ */
+void init_kbuild_object(void)
+{
+    g_pszVarNmTemplate = strcache2_add(&variable_strcache, STRING_SIZE_TUPLE("_TEMPLATE"));
+}
+
+
+/**
+ * Reports a problem with dynamic severity level.
+ *
+ * @param   enmSeverity         The severity level.
+ * @param   pFileLoc            The file location.
+ * @param   pszFormat           The format string.
+ * @param   ...                 Arguments for the format string.
+ */
+static void kbuild_report_problem(enum kBuildSeverity enmSeverity, const floc *pFileLoc,
+                                  const char *pszFormat, ...)
+{
+    char    szBuf[8192];
+    va_list va;
+
+    va_start(va, pszFormat);
+#ifdef _MSC_VER
+    _vsnprintf(szBuf, sizeof(szBuf), pszFormat, va);
+#else
+    vsnprintf(szBuf, sizeof(szBuf), pszFormat, va);
+#endif
+    va_end(va);
+
+    switch (enmSeverity)
+    {
+        case kBuildSeverity_Warning:
+            OS(message, 0, "%s", szBuf);
+            break;
+        case kBuildSeverity_Error:
+            OS(error, pFileLoc, "%s", szBuf);
+            break;
+        default:
+        case kBuildSeverity_Fatal:
+            OS(fatal, pFileLoc, "%s", szBuf);
+            break;
+    }
+}
+
+
+static const char *
+eval_kbuild_type_to_string(enum kBuildType enmType)
+{
+    switch (enmType)
+    {
+        case kBuildType_Target:      return "target";
+        case kBuildType_Template:    return "template";
+        case kBuildType_Tool:        return "tool";
+        case kBuildType_Sdk:         return "sdk";
+        case kBuildType_Unit:        return "unit";
+        default:
+        case kBuildType_Invalid:     return "invalid";
+    }
+}
+
+/**
+ * Gets the length of the string representation of the given type.
+ *
+ * @returns The string length.
+ * @param   enmType             The kBuild object type in question.
+ */
+static unsigned
+eval_kbuild_type_to_string_length(enum kBuildType enmType)
+{
+    switch (enmType)
+    {
+        case kBuildType_Target:      return sizeof("target") - 1;
+        case kBuildType_Template:    return sizeof("template") - 1;
+        case kBuildType_Tool:        return sizeof("tool") - 1;
+        case kBuildType_Sdk:         return sizeof("sdk") - 1;
+        case kBuildType_Unit:        return sizeof("unit") - 1;
+        default:
+        case kBuildType_Invalid:     return sizeof("invalid") - 1;
+    }
+}
+
+/**
+ * Converts a string into an kBuild object type.
+ *
+ * @returns The type on success, kBuildType_Invalid on failure.
+ * @param   pchWord             The pchWord.  Not necessarily zero terminated.
+ * @param   cchWord             The length of the word.
+ */
+static enum kBuildType
+eval_kbuild_type_from_string(const char *pchWord, size_t cchWord)
+{
+    if (cchWord >= 3)
+    {
+        if (*pchWord == 't')
+        {
+            if (WORD_IS(pchWord, cchWord, "target"))
+                return kBuildType_Target;
+            if (WORD_IS(pchWord, cchWord, "template"))
+                return kBuildType_Template;
+            if (WORD_IS(pchWord, cchWord, "tool"))
+                return kBuildType_Tool;
+        }
+        else
+        {
+            if (WORD_IS(pchWord, cchWord, "sdk"))
+                return kBuildType_Sdk;
+            if (WORD_IS(pchWord, cchWord, "unit"))
+                return kBuildType_Unit;
+        }
+    }
+
+    return kBuildType_Invalid;
+}
+
+
+
+#if 0 /* unused */
+/**
+ * Helper function for caching variable name strings.
+ *
+ * @returns The string cache variable name.
+ * @param   pszName             The variable name.
+ * @param   ppszCache           Cache variable, static or global.  Initialize to
+ *                              NULL.
+ */
+static const char *
+kbuild_variable_name(const char *pszName, const char **ppszCache)
+{
+    const char *pszRet = *ppszCache;
+    if (!pszRet)
+        *ppszCache = pszRet = strcache2_add(&variable_strcache, pszName, strlen(pszName));
+    return pszRet;
+}
+#endif
+
+static struct kbuild_object *
+lookup_kbuild_object(enum kBuildType enmType, const char *pchName, size_t cchName)
+{
+    /* Linear lookup for now. */
+    struct kbuild_object *pCur = g_pHeadKbObjs;
+    while (pCur)
+    {
+        if (   pCur->enmType == enmType
+            && pCur->cchName == cchName
+            && !memcmp(pCur->pszName, pchName, cchName))
+            return pCur;
+        pCur = pCur->pGlobalNext;
+    }
+    return NULL;
+}
+
+
+/** @name Defining and modifying variables
+ * @{
+ */
+
+/**
+ * Checks if the variable name is valid.
+ *
+ * @returns 1 if valid, 0 if not.
+ * @param   pchName             The variable name.
+ * @param   cchName             The length of the variable name.
+ */
+static int
+is_valid_kbuild_object_variable_name(const char *pchName, size_t cchName)
+{
+    if (cchName > 0)
+    {
+        if (!memchr(pchName, '[', cchName))
+        {
+            /** @todo more? */
+            return 1;
+        }
+    }
+    return 0;
+}
+
+static const char *
+kbuild_replace_special_accessors(const char *pchValue, size_t *pcchValue, int *pfDuplicateValue,
+                                 const floc *pFileLoc)
+{
+    size_t      cchValue    = *pcchValue;
+    size_t      cbAllocated = *pfDuplicateValue ? 0 : cchValue + 1;
+
+    /*
+     * Loop thru each potential special accessor occurance in the string.
+     *
+     * Unfortunately, we don't have a strnstr function in the C library, so
+     * we'll using memchr and doing a few more rounds in this loop.
+     */
+    size_t  cchLeft  = cchValue;
+    char   *pchLeft  = (char *)pchValue;
+    for (;;)
+    {
+        int     fSuper;
+        char   *pch = (char *)memchr(pchLeft, '$', cchLeft);
+        if (!pch)
+            break;
+
+        pch++;
+        cchLeft -= pch - pchLeft;
+        pchLeft  = pch;
+
+        /* [@self] is the shorter, quit if there isn't enough room for even it. */
+        if (cchLeft < sizeof("([@self]") - 1)
+            break;
+
+        /* We don't care how many dollars there are in front of a special accessor. */
+        if (*pchLeft == '$')
+        {
+            do
+            {
+                cchLeft--;
+                pchLeft++;
+            } while (cchLeft >= sizeof("([@self]") - 1 && *pchLeft == '$');
+            if (cchLeft < sizeof("([@self]") - 1)
+                break;
+        }
+
+        /* Is it a special accessor? */
+        if (   pchLeft[2] != '@'
+            || pchLeft[1] != '['
+            || pchLeft[0] != '(')
+            continue;
+        pchLeft += 2;
+        cchLeft -= 2;
+        if (!memcmp(pchLeft, STRING_SIZE_TUPLE("@self]")))
+            fSuper = 0;
+        else if (   cchLeft >= sizeof("@super]")
+                 && !memcmp(pchLeft, STRING_SIZE_TUPLE("@super]")))
+            fSuper = 1;
+        else
+            continue;
+
+        /*
+         * We've got something to replace. First figure what with and then
+         * resize the value buffer.
+         */
+        if (g_pTopKbEvalData)
+        {
+            struct kbuild_object   *pObj       = g_pTopKbEvalData->pObj;
+            size_t const            cchSpecial = fSuper ? sizeof("@super") - 1 : sizeof("@self") - 1;
+            size_t                  cchName;
+            size_t                  cchType;
+            long                    cchDelta;
+            const char             *pszName;
+
+            if (fSuper)
+            {
+                pObj = get_kbuild_object_parent(pObj, kBuildSeverity_Error);
+                if (!pObj)
+                    continue;
+            }
+            pszName = pObj->pszName;
+            cchName = pObj->cchName;
+            cchType = eval_kbuild_type_to_string_length(pObj->enmType);
+            cchDelta = cchType + 1 + cchName - cchSpecial;
+
+            if (cchValue + cchDelta >= cbAllocated)
+            {
+                size_t  offLeft = pchLeft - pchValue;
+                char   *pszNewValue;
+
+                cbAllocated = cchValue + cchDelta + 1;
+                if (cchValue < 1024)
+                    cbAllocated = (cbAllocated + 31) & ~(size_t)31;
+                else
+                    cbAllocated = (cbAllocated + 255) & ~(size_t)255;
+                pszNewValue = (char *)xmalloc(cbAllocated);
+
+                memcpy(pszNewValue, pchValue, offLeft);
+                memcpy(pszNewValue + offLeft + cchSpecial + cchDelta,
+                       pchLeft + cchSpecial,
+                       cchLeft - cchSpecial + 1);
+
+                if (*pfDuplicateValue == 0)
+                    free((char *)pchValue);
+                else
+                    *pfDuplicateValue = 0;
+
+                pchValue = pszNewValue;
+                pchLeft  = pszNewValue + offLeft;
+            }
+            else
+            {
+                assert(*pfDuplicateValue == 0);
+                memmove(pchLeft + cchSpecial + cchDelta,
+                        pchLeft + cchSpecial,
+                        cchLeft - cchSpecial + 1);
+            }
+
+            cchLeft  += cchDelta;
+            cchValue += cchDelta;
+            *pcchValue = cchValue;
+
+            memcpy(pchLeft, eval_kbuild_type_to_string(pObj->enmType), cchType);
+            pchLeft += cchType;
+            *pchLeft++ = '@';
+            memcpy(pchLeft, pszName, cchName);
+            pchLeft += cchName;
+            cchLeft -= cchType + 1 + cchName;
+        }
+        else
+            error(pFileLoc, 20, _("The '$([%.*s...' accessor can only be used in the context of a kBuild object"),
+                  (int)MIN(cchLeft, 20), pchLeft);
+    }
+
+    return pchValue;
+}
+
+static struct variable *
+define_kbuild_object_variable_cached(struct kbuild_object *pObj, const char *pszName,
+                                     const char *pchValue, size_t cchValue,
+                                     int fDuplicateValue, enum variable_origin enmOrigin,
+                                     int fRecursive, int fNoSpecialAccessors, const floc *pFileLoc)
+{
+    struct variable *pVar;
+    size_t cchName = strcache2_get_len(&variable_strcache, pszName);
+
+    if (fRecursive && !fNoSpecialAccessors)
+        pchValue = kbuild_replace_special_accessors(pchValue, &cchValue, &fDuplicateValue, pFileLoc);
+
+    pVar = define_variable_in_set(pszName, cchName,
+                                  pchValue, cchValue, fDuplicateValue,
+                                  enmOrigin, fRecursive,
+                                  pObj->pVariables->set,
+                                  pFileLoc);
+
+    /* Single underscore prefixed variables gets a global alias. */
+    if (   pszName[0] == '_'
+        && pszName[1] != '_'
+        && g_fKbObjCompMode)
+    {
+        struct variable *pAlias;
+        size_t           cchPrefixed = pObj->cchVarPrefix + cchName;
+        char            *pszPrefixed = xmalloc(cchPrefixed + 1);
+        memcpy(pszPrefixed, pObj->pszVarPrefix, pObj->cchVarPrefix);
+        memcpy(&pszPrefixed[pObj->cchVarPrefix], pszName, cchName);
+        pszPrefixed[cchPrefixed] = '\0';
+
+        pAlias = define_variable_alias_in_set(pszPrefixed, cchPrefixed, pVar, enmOrigin,
+                                              &global_variable_set, pFileLoc);
+        if (!pAlias->alias)
+            OS(error, pFileLoc, _("Error defining alias '%s'"), pszPrefixed);
+    }
+
+    return pVar;
+}
+
+#if 0
+struct variable *
+define_kbuild_object_variable(struct kbuild_object *pObj, const char *pchName, size_t cchName,
+                              const char *pchValue, size_t cchValue,
+                              int fDuplicateValue, enum variable_origin enmOrigin,
+                              int fRecursive, const floc *pFileLoc)
+{
+    return define_kbuild_object_variable_cached(pObj, strcache2_add(&variable_strcache, pchName, cchName),
+                                                pchValue, cchValue,
+                                                fDuplicateValue, enmOrigin,
+                                                fRecursive, pFileLoc);
+}
+#endif
+
+/**
+ * Try define a kBuild object variable via a possible accessor
+ * ([type@object]var).
+ *
+ * @returns Pointer to the defined variable on success.
+ * @retval  VAR_NOT_KBUILD_ACCESSOR if it isn't an accessor.
+ *
+ * @param   pchName         The variable name, not cached.
+ * @param   cchName         The variable name length.  This will not be ~0U.
+ * @param   pszValue        The variable value.  If @a fDuplicateValue is clear,
+ *                          this should be assigned as the actual variable
+ *                          value, otherwise it will be duplicated.  In the
+ *                          latter case it might not be properly null
+ *                          terminated.
+ * @param   cchValue        The value length.
+ * @param   fDuplicateValue Whether @a pszValue need to be duplicated on the
+ *                          heap or is already there.
+ * @param   enmOrigin       The variable origin.
+ * @param   fRecursive      Whether it's a recursive variable.
+ * @param   pFileLoc        The location of the variable definition.
+ */
+struct variable *
+try_define_kbuild_object_variable_via_accessor(const char *pchName, size_t cchName,
+                                               const char *pszValue, size_t cchValue, int fDuplicateValue,
+                                               enum variable_origin enmOrigin, int fRecursive,
+                                               floc const *pFileLoc)
+{
+    struct kbuild_object   *pObj;
+    const char             *pchVarNm;
+    size_t                  cchVarNm;
+
+    pObj = parse_kbuild_object_variable_accessor(pchName, cchName, kBuildSeverity_Fatal, pFileLoc,
+                                                 &pchVarNm, &cchVarNm, NULL);
+    if (pObj != KOBJ_NOT_KBUILD_ACCESSOR)
+    {
+        assert(pObj != NULL);
+        if (!is_valid_kbuild_object_variable_name(pchVarNm, cchVarNm))
+            fatal(pFileLoc, cchVarNm + cchName, _("Invalid kBuild object variable name: '%.*s' ('%.*s')"),
+                  (int)cchVarNm, pchVarNm, (int)cchName, pchName);
+        return define_kbuild_object_variable_cached(pObj, strcache2_add(&variable_strcache, pchVarNm, cchVarNm),
+                                                    pszValue, cchValue, fDuplicateValue, enmOrigin, fRecursive,
+                                                    0 /*fNoSpecialAccessors*/, pFileLoc);
+    }
+
+    return VAR_NOT_KBUILD_ACCESSOR;
+}
+
+/**
+ * Define a kBuild object variable in the topmost kBuild object.
+ *
+ * This won't be an variable accessor.
+ *
+ * @returns Pointer to the defined variable on success.
+ *
+ * @param   pchName         The variable name, not cached.
+ * @param   cchName         The variable name length.  This will not be ~0U.
+ * @param   pszValue        The variable value.  If @a fDuplicateValue is clear,
+ *                          this should be assigned as the actual variable
+ *                          value, otherwise it will be duplicated.  In the
+ *                          latter case it might not be properly null
+ *                          terminated.
+ * @param   cchValue        The value length.
+ * @param   fDuplicateValue Whether @a pszValue need to be duplicated on the
+ *                          heap or is already there.
+ * @param   enmOrigin       The variable origin.
+ * @param   fRecursive      Whether it's a recursive variable.
+ * @param   pFileLoc        The location of the variable definition.
+ */
+struct variable *
+define_kbuild_object_variable_in_top_obj(const char *pchName, size_t cchName,
+                                         const char *pszValue, size_t cchValue, int fDuplicateValue,
+                                         enum variable_origin enmOrigin, int fRecursive,
+                                         floc const *pFileLoc)
+{
+    assert(g_pTopKbEvalData != NULL);
+
+    if (!is_valid_kbuild_object_variable_name(pchName, cchName))
+        fatal(pFileLoc, cchName, _("Invalid kBuild object variable name: '%.*s'"), (int)cchName, pchName);
+
+    return define_kbuild_object_variable_cached(g_pTopKbEvalData->pObj, strcache2_add(&variable_strcache, pchName, cchName),
+                                                pszValue, cchValue, fDuplicateValue, enmOrigin, fRecursive,
+                                                0 /*fNoSpecialAccessors*/, pFileLoc);
+}
+
+/**
+ * Implements appending and prepending to a kBuild object variable.
+ *
+ * The variable is either accessed thru an accessor or by the topmost kBuild
+ * object.
+ *
+ * @returns Pointer to the defined variable on success.
+ *
+ * @param   pchName         The variable name, not cached.
+ * @param   cchName         The variable name length.  This will not be ~0U.
+ * @param   pszValue        The variable value. Must be duplicated.
+ * @param   cchValue        The value length.
+ * @param   fSimpleValue    Whether we've already figured that it's a simple
+ *                          value.  This is for optimizing appending/prepending
+ *                          to an existing simple value variable.
+ * @param   enmOrigin       The variable origin.
+ * @param   fAppend         Append if set, prepend if clear.
+ * @param   pFileLoc        The location of the variable definition.
+ */
+struct variable *
+kbuild_object_variable_pre_append(const char *pchName, size_t cchName,
+                                  const char *pchValue, size_t cchValue, int fSimpleValue,
+                                  enum variable_origin enmOrigin, int fAppend,
+                                  const floc *pFileLoc)
+{
+    struct kbuild_object   *pObj;
+    struct variable         VarKey;
+
+    /*
+     * Resolve the relevant kBuild object first.
+     */
+    if (cchName > 3 && pchName[0] == '[')
+    {
+        const char *pchVarNm;
+        size_t      cchVarNm;
+        pObj = parse_kbuild_object_variable_accessor(pchName, cchName, kBuildSeverity_Fatal, pFileLoc,
+                                                     &pchVarNm, &cchVarNm, NULL);
+        if (pObj != KOBJ_NOT_KBUILD_ACCESSOR)
+        {
+            pchName = pchVarNm;
+            cchName = cchVarNm;
+        }
+        else
+            pObj = g_pTopKbEvalData->pObj;
+    }
+    else
+        pObj = g_pTopKbEvalData->pObj;
+
+    /*
+     * Make sure the variable name is valid.  Raise fatal error if not.
+     */
+    if (!is_valid_kbuild_object_variable_name(pchName, cchName))
+        fatal(pFileLoc, cchName, _("Invalid kBuild object variable name: '%.*s'"), (int)cchName, pchName);
+
+    /*
+     * Get the cached name and look it up in the object's variables.
+     */
+    VarKey.name = strcache2_lookup(&variable_strcache, pchName, cchName);
+    if (VarKey.name)
+    {
+        struct variable *pVar;
+
+        VarKey.length = cchName;
+        pVar = (struct variable *)hash_find_item_strcached(&pObj->pVariables->set->table, &VarKey);
+        if (pVar)
+        {
+            /* Append/prepend to existing variable. */
+            int fDuplicateValue = 1;
+            if (pVar->recursive && !fSimpleValue)
+                pchValue = kbuild_replace_special_accessors(pchValue, &cchValue, &fDuplicateValue, pFileLoc);
+
+            pVar = do_variable_definition_append(pFileLoc, pVar, pchValue, cchValue, fSimpleValue, enmOrigin, fAppend);
+
+            if (fDuplicateValue == 0)
+                free((char *)pchValue);
+            return pVar;
+        }
+
+        /*
+         * Not found. Check ancestors if the 'override' directive isn't applied.
+         */
+        if (pObj->pszParent && enmOrigin != o_override)
+        {
+            struct kbuild_object *pParent = pObj;
+            for (;;)
+            {
+                pParent = resolve_kbuild_object_parent(pParent, 0 /*fQuiet*/);
+                if (!pParent)
+                    break;
+
+                pVar = (struct variable *)hash_find_item_strcached(&pParent->pVariables->set->table, &VarKey);
+                if (pVar)
+                {
+                    if (pVar->value_length != ~0U)
+                        assert(pVar->value_length == strlen(pVar->value));
+                    else
+                        pVar->value_length = strlen(pVar->value);
+
+                    /*
+                     * Combine the two values and define the variable in the
+                     * specified child object.  We must disregard 'origin' a
+                     * little here, so we must do the gritty stuff our selves.
+                     */
+                    if (   pVar->recursive
+                        || fSimpleValue
+                        || !cchValue
+                        || memchr(pchValue, '$', cchValue) == NULL )
+                    {
+                        int     fDuplicateValue = 1;
+                        size_t  cchNewValue;
+                        char   *pszNewValue;
+                        char   *pszTmp;
+
+                        /* Just join up the two values. */
+                        if (pVar->recursive && !fSimpleValue)
+                            pchValue = kbuild_replace_special_accessors(pchValue, &cchValue, &fDuplicateValue, pFileLoc);
+                        if (pVar->value_length == 0)
+                        {
+                            cchNewValue = cchValue;
+                            pszNewValue = xstrndup(pchValue, cchValue);
+                        }
+                        else if (!cchValue)
+                        {
+                            cchNewValue = pVar->value_length;
+                            pszNewValue = xmalloc(cchNewValue + 1);
+                            memcpy(pszNewValue, pVar->value, cchNewValue + 1);
+                        }
+                        else
+                        {
+                            cchNewValue = pVar->value_length + 1 + cchValue;
+                            pszNewValue = xmalloc(cchNewValue + 1);
+                            if (fAppend)
+                            {
+                                memcpy(pszNewValue, pVar->value, pVar->value_length);
+                                pszTmp = pszNewValue + pVar->value_length;
+                                *pszTmp++ = ' ';
+                                memcpy(pszTmp, pchValue, cchValue);
+                                pszTmp[cchValue] = '\0';
+                            }
+                            else
+                            {
+                                memcpy(pszNewValue, pchValue, cchValue);
+                                pszTmp = pszNewValue + cchValue;
+                                *pszTmp++ = ' ';
+                                memcpy(pszNewValue, pVar->value, pVar->value_length);
+                                pszTmp[pVar->value_length] = '\0';
+                            }
+                        }
+
+                        /* Define the new variable in the child. */
+                        pVar = define_kbuild_object_variable_cached(pObj, VarKey.name,
+                                                                    pszNewValue, cchNewValue, 0 /*fDuplicateValue*/,
+                                                                    enmOrigin, pVar->recursive, 1 /*fNoSpecialAccessors*/,
+                                                                    pFileLoc);
+                        if (fDuplicateValue == 0)
+                            free((char *)pchValue);
+                    }
+                    else
+                    {
+                        /* Lazy bird: Copy the variable from the ancestor and
+                                      then do a normal append/prepend on it. */
+                        pVar = define_kbuild_object_variable_cached(pObj, VarKey.name,
+                                                                    pVar->value, pVar->value_length, 1 /*fDuplicateValue*/,
+                                                                    enmOrigin, pVar->recursive, 1 /*fNoSpecialAccessors*/,
+                                                                    pFileLoc);
+                        append_expanded_string_to_variable(pVar, pchValue, cchValue, fAppend);
+                    }
+                    return pVar;
+                }
+            }
+        }
+    }
+    else
+        VarKey.name = strcache2_add(&variable_strcache, pchName, cchName);
+
+    /* Variable not found. */
+    return define_kbuild_object_variable_cached(pObj, VarKey.name,
+                                                pchValue, cchValue, 1 /*fDuplicateValue*/, enmOrigin,
+                                                1 /*fRecursive */, 0 /*fNoSpecialAccessors*/, pFileLoc);
+}
+
+/** @} */
+
+
+static char *
+allocate_expanded_next_token(const char **ppszCursor, const char *pszEos, size_t *pcchToken, int fStrip)
+{
+    unsigned int cchToken;
+    char *pszToken = find_next_token_eos(ppszCursor, pszEos, &cchToken);
+    if (pszToken)
+    {
+        pszToken = allocated_variable_expand_2(pszToken, cchToken, &cchToken);
+        if (pszToken)
+        {
+            if (fStrip)
+            {
+                unsigned int off = 0;
+                while (MY_IS_BLANK(pszToken[off]))
+                    off++;
+                if (off)
+                {
+                    cchToken -= off;
+                    memmove(pszToken, &pszToken[off], cchToken + 1);
+                }
+
+                while (cchToken > 0 && MY_IS_BLANK(pszToken[cchToken - 1]))
+                    pszToken[--cchToken] = '\0';
+            }
+
+            assert(cchToken == strlen(pszToken));
+            if (pcchToken)
+                *pcchToken = cchToken;
+            return pszToken;
+        }
+    }
+
+    if (pcchToken)
+        *pcchToken = 0;
+    return NULL;
+}
+
+static struct kbuild_object *
+resolve_kbuild_object_parent(struct kbuild_object *pObj, int fQuiet)
+{
+    if (   !pObj->pParent
+        && pObj->pszParent)
+    {
+        struct kbuild_object *pCur = g_pHeadKbObjs;
+        while (pCur)
+        {
+            if (   pCur->enmType == pObj->enmType
+                && !strcmp(pCur->pszName, pObj->pszParent))
+            {
+                if (    pCur->pszParent
+                    &&  (   pCur->pParent == pObj
+                         || !strcmp(pCur->pszParent, pObj->pszName)) )
+                    OSS(fatal, &pObj->FileLoc, _("'%s' and '%s' are both trying to be each other children..."),
+                        pObj->pszName, pCur->pszName);
+
+                pObj->pParent = pCur;
+                pObj->pVariables->next = pObj->pVariables;
+                return pCur;
+            }
+
+            pCur = pCur->pGlobalNext;
+        }
+
+        /* Not found. */
+        if (!fQuiet)
+            OSS(error, &pObj->FileLoc, _("Could not locate parent '%s' of '%s'"), pObj->pszParent, pObj->pszName);
+    }
+    return pObj->pParent;
+}
+
+/**
+ * Get the parent of the given object, it is expected to have one.
+ *
+ * @returns Pointer to the parent. NULL if we survive failure.
+ * @param   pObj                The kBuild object.
+ * @param   enmSeverity         The severity of a missing parent.
+ */
+static struct kbuild_object *
+get_kbuild_object_parent(struct kbuild_object *pObj, enum kBuildSeverity enmSeverity)
+{
+    struct kbuild_object *pParent = pObj->pParent;
+    if (pParent)
+        return pParent;
+
+    pParent = resolve_kbuild_object_parent(pObj, 1 /*fQuiet - complain below */);
+    if (pParent)
+        return pParent;
+
+    if (pObj->pszParent)
+        kbuild_report_problem(enmSeverity, &pObj->FileLoc,
+                              _("Could not local parent '%s' for kBuild object '%s'"),
+                              pObj->pszParent, pObj->pszName);
+    else
+        kbuild_report_problem(enmSeverity, &pObj->FileLoc,
+                              _("kBuild object '%s' has no parent ([@super])"),
+                              pObj->pszName);
+    return NULL;
+}
+
+static int
+eval_kbuild_define_xxxx(struct kbuild_eval_data **ppData, const floc *pFileLoc,
+                        const char *pszLine, const char *pszEos, int fIgnoring, enum kBuildType enmType)
+{
+    unsigned int            cch;
+    char                    ch;
+    char                   *psz;
+    const char             *pszPrefix;
+    struct kbuild_object   *pObj;
+    struct kbuild_eval_data *pData;
+
+    if (fIgnoring)
+        return 0;
+
+    /*
+     * Create a new kBuild object.
+     */
+    pObj = xmalloc(sizeof(*pObj));
+    pObj->enmType           = enmType;
+    pObj->pszName           = NULL;
+    pObj->cchName           = 0;
+    pObj->FileLoc           = *pFileLoc;
+
+    pObj->pGlobalNext       = g_pHeadKbObjs;
+    g_pHeadKbObjs           = pObj;
+
+    pObj->pVariables        = create_new_variable_set();
+
+    pObj->pszParent         = NULL;
+    pObj->cchParent         = 0;
+    pObj->pParent           = NULL;
+
+    pObj->pszTemplate       = NULL;
+
+    pObj->pszVarPrefix      = NULL;
+    pObj->cchVarPrefix      = 0;
+
+    /*
+     * The first word is the name.
+     */
+    pObj->pszName = allocate_expanded_next_token(&pszLine, pszEos, &pObj->cchName, 1 /*strip*/);
+    if (!pObj->pszName || !*pObj->pszName)
+        O(fatal, pFileLoc, _("The kBuild define requires a name"));
+
+    psz = pObj->pszName;
+    while ((ch = *psz++) != '\0')
+        if (!isgraph(ch))
+        {
+            OSS(error, pFileLoc, _("The 'kBuild-define-%s' name '%s' contains one or more invalid characters"),
+                eval_kbuild_type_to_string(enmType), pObj->pszName);
+            break;
+        }
+
+    /*
+     * Calc the variable prefix.
+     */
+    switch (enmType)
+    {
+        case kBuildType_Target:      pszPrefix = ""; break;
+        case kBuildType_Template:    pszPrefix = "TEMPLATE_"; break;
+        case kBuildType_Tool:        pszPrefix = "TOOL_"; break;
+        case kBuildType_Sdk:         pszPrefix = "SDK_"; break;
+        case kBuildType_Unit:        pszPrefix = "UNIT_"; break;
+        default:
+            ON(fatal, pFileLoc, _("enmType=%d"), enmType);
+            return -1;
+    }
+    cch = strlen(pszPrefix);
+    pObj->cchVarPrefix = cch + pObj->cchName;
+    pObj->pszVarPrefix = xmalloc(pObj->cchVarPrefix + 1);
+    memcpy(pObj->pszVarPrefix, pszPrefix, cch);
+    memcpy(&pObj->pszVarPrefix[cch], pObj->pszName, pObj->cchName);
+
+    /*
+     * Parse subsequent words.
+     */
+    psz = find_next_token_eos(&pszLine, pszEos, &cch);
+    while (psz)
+    {
+        if (WORD_IS(psz, cch, "extending"))
+        {
+            /* Inheritance directive. */
+            if (pObj->pszParent != NULL)
+                O(fatal, pFileLoc, _("'extending' can only occure once"));
+            pObj->pszParent = allocate_expanded_next_token(&pszLine, pszEos, &pObj->cchParent, 1 /*strip*/);
+            if (!pObj->pszParent || !*pObj->pszParent)
+                O(fatal, pFileLoc, _("'extending' requires a parent name"));
+        }
+        else if (WORD_IS(psz, cch, "using"))
+        {
+            char   *pszTemplate;
+            size_t  cchTemplate;
+
+            /* Template directive. */
+            if (enmType != kBuildType_Target)
+                O(fatal, pFileLoc, _("'using <template>' can only be used with 'kBuild-define-target'"));
+            if (pObj->pszTemplate != NULL)
+                O(fatal, pFileLoc, _("'using' can only occure once"));
+
+            pszTemplate = allocate_expanded_next_token(&pszLine, pszEos, &cchTemplate, 1 /*fStrip*/);
+            if (!pszTemplate || !*pszTemplate)
+                O(fatal, pFileLoc, _("'using' requires a template name"));
+
+            define_kbuild_object_variable_cached(pObj, g_pszVarNmTemplate, pszTemplate, cchTemplate,
+                                                 0 /*fDuplicateValue*/, o_default, 0 /*fRecursive*/,
+                                                 1 /*fNoSpecialAccessors*/, pFileLoc);
+
+        }
+        else
+            fatal(pFileLoc, cch, _("Don't know what '%.*s' means"), (int)cch, psz);
+
+        /* next token */
+        psz = find_next_token_eos(&pszLine, pszEos, &cch);
+    }
+
+    /*
+     * Try resolve the parent.
+     */
+    resolve_kbuild_object_parent(pObj, 1 /*fQuiet*/);
+
+    /*
+     * Create an eval stack entry and change the current variable set.
+     */
+    pData = xmalloc(sizeof(*pData));
+    pData->pObj             = pObj;
+    pData->pVariablesSaved  = current_variable_set_list;
+    current_variable_set_list = pObj->pVariables;
+
+    pData->pStackDown       = *ppData;
+    *ppData                 = pData;
+    g_pTopKbEvalData        = pData;
+
+    return 0;
+}
+
+static int
+eval_kbuild_endef_xxxx(struct kbuild_eval_data **ppData, const floc *pFileLoc,
+                       const char *pszLine, const char *pszEos, int fIgnoring, enum kBuildType enmType)
+{
+    struct kbuild_eval_data *pData;
+    struct kbuild_object    *pObj;
+    size_t                   cchName;
+    char                    *pszName;
+
+    if (fIgnoring)
+        return 0;
+
+    /*
+     * Is there something to pop?
+     */
+    pData = *ppData;
+    if (!pData)
+    {
+        OSS(error, pFileLoc, _("kBuild-endef-%s is missing kBuild-define-%s"),
+            eval_kbuild_type_to_string(enmType), eval_kbuild_type_to_string(enmType));
+        return 0;
+    }
+
+    /*
+     * ... and does it have a matching kind?
+     */
+    pObj = pData->pObj;
+    if (pObj->enmType != enmType)
+        OSSS(error, pFileLoc, _("'kBuild-endef-%s' does not match 'kBuild-define-%s %s'"),
+             eval_kbuild_type_to_string(enmType), eval_kbuild_type_to_string(pObj->enmType), pObj->pszName);
+
+    /*
+     * The endef-kbuild may optionally be followed by the target name.
+     * It should match the name given to the kBuild-define.
+     */
+    pszName = allocate_expanded_next_token(&pszLine, pszEos, &cchName, 1 /*fStrip*/);
+    if (pszName)
+    {
+        if (   cchName != pObj->cchName
+            || strcmp(pszName, pObj->pszName))
+            OSSSS(error, pFileLoc, _("'kBuild-endef-%s %s' does not match 'kBuild-define-%s %s'"),
+                  eval_kbuild_type_to_string(enmType), pszName,
+                  eval_kbuild_type_to_string(pObj->enmType), pObj->pszName);
+        free(pszName);
+    }
+
+    /*
+     * Pop a define off the stack.
+     */
+    assert(pData == g_pTopKbEvalData);
+    *ppData = g_pTopKbEvalData = pData->pStackDown;
+    pData->pStackDown      = NULL;
+    current_variable_set_list = pData->pVariablesSaved;
+    pData->pVariablesSaved = NULL;
+    free(pData);
+
+    return 0;
+}
+
+int eval_kbuild_read_hook(struct kbuild_eval_data **kdata, const floc *flocp,
+                          const char *pchWord, size_t cchWord, const char *line, const char *eos, int ignoring)
+{
+    enum kBuildType enmType;
+
+    /*
+     * Skip the 'kBuild-' prefix that the caller already matched.
+     */
+    assert(memcmp(pchWord, "kBuild-", sizeof("kBuild-") - 1) == 0);
+    pchWord += sizeof("kBuild-") - 1;
+    cchWord -= sizeof("kBuild-") - 1;
+
+    /*
+     * String switch.
+     */
+    if (   cchWord >= sizeof("define-") - 1
+        && strneq(pchWord, "define-", sizeof("define-") - 1))
+    {
+        enmType = eval_kbuild_type_from_string(pchWord + sizeof("define-") - 1, cchWord - sizeof("define-") + 1);
+        if (enmType != kBuildType_Invalid)
+            return eval_kbuild_define_xxxx(kdata, flocp, line, eos, ignoring, enmType);
+    }
+    else if (   cchWord >= sizeof("endef-") - 1
+             && strneq(pchWord, "endef-", sizeof("endef-") - 1))
+    {
+        enmType = eval_kbuild_type_from_string(pchWord + sizeof("endif-") - 1, cchWord - sizeof("endif-") + 1);
+        if (enmType != kBuildType_Invalid)
+            return eval_kbuild_endef_xxxx(kdata, flocp, line, eos, ignoring, enmType);
+    }
+    else if (WORD_IS(pchWord, cchWord, "endef"))
+    {
+        /* Terminate whatever definition is on top. */
+
+    }
+
+    /*
+     * Everything that is prefixed with 'kBuild-' is reserved for language
+     * extensions, at least until legacy assignments/whatever turns up.
+     */
+    error(flocp, cchWord, _("Unknown syntax 'kBuild-%.*s'"), (int)cchWord, pchWord);
+    return 0;
+}
+
+
+/** @name kBuild object variable accessor related functions
+ * @{
+ */
+
+/**
+ * Checks if the given name is an object variable accessor.
+ *
+ * @returns 1 if it is, 0 if it isn't.
+ * @param   pchName             The potential kBuild variable accessor
+ *                              expression.
+ * @param   cchName             Length of the expression.
+ */
+int is_kbuild_object_variable_accessor(const char *pchName, size_t cchName)
+{
+    char const *pchTmp;
+
+    /* See lookup_kbuild_object_variable for the rules. */
+    if (cchName >= 1+1+1+1 && *pchName == '[')
+    {
+        pchName++;
+        cchName--;
+
+        pchTmp = memchr(pchName, '@', cchName);
+        if (pchTmp)
+        {
+            cchName -= pchTmp + 1 - pchName;
+            pchName  = pchTmp + 1;
+            pchTmp = memchr(pchName, ']', cchName);
+            if (pchTmp)
+            {
+                cchName -= pchTmp + 1 - pchName;
+                if (cchName > 0)
+                    return 1;
+            }
+        }
+    }
+    return 0;
+}
+
+/**
+ * Parses a kBuild object variable accessor, resolving the object.
+ *
+ * @returns Pointer to the variable if found.
+ * @retval  NULL if the object (or type) couldn't be resolved.
+ * @retval  KOBJ_NOT_KBUILD_ACCESSOR if no a kBuild variable accessor.
+ *
+ * @param   pchExpr             The kBuild variable accessor expression.
+ * @param   cchExpr             Length of the expression.
+ * @param   enmSeverity         The minimum severity level for errors.
+ * @param   pFileLoc            The file location any errors should be reported
+ *                              at. Optional.
+ * @param   ppchVarNm           Where to return the pointer to the start of the
+ *                              variable name within the string @a pchExpr
+ *                              points to. Mandatory.
+ * @param   pcchVarNm           Where to return the length of the variable name.
+ *                              Mandatory.
+ * @param   penmType            Where to return the object type. Optional.
+ */
+static struct kbuild_object *
+parse_kbuild_object_variable_accessor(const char *pchExpr, size_t cchExpr,
+                                      enum kBuildSeverity enmSeverity, const floc *pFileLoc,
+                                      const char **ppchVarNm, size_t *pcchVarNm, enum kBuildType *penmType)
+{
+    const char * const pchOrgExpr = pchExpr;
+    size_t       const cchOrgExpr = cchExpr;
+    char const        *pchTmp;
+
+    /*
+     * To accept this as an kBuild accessor, we require:
+     *   1. Open bracket.
+     *   2. At sign separating the type from the name.
+     *   3. Closing bracket.
+     *   4. At least one character following it.
+     */
+    if (cchExpr >= 1+1+1+1 && *pchExpr == '[')
+    {
+        pchExpr++;
+        cchExpr--;
+
+        pchTmp = memchr(pchExpr, '@', cchExpr);
+        if (pchTmp)
+        {
+            const char  * const pchType = pchExpr;
+            size_t        const cchType = pchTmp - pchExpr;
+
+            cchExpr -= cchType + 1;
+            pchExpr  = pchTmp + 1;
+            pchTmp = memchr(pchExpr, ']', cchExpr);
+            if (pchTmp)
+            {
+                const char * const pchObjName = pchExpr;
+                size_t       const cchObjName = pchTmp - pchExpr;
+
+                cchExpr -= cchObjName + 1;
+                pchExpr  = pchTmp + 1;
+                if (cchExpr > 0)
+                {
+
+                    /*
+                     * It's an kBuild define variable accessor, alright.
+                     */
+                    *pcchVarNm = cchExpr;
+                    *ppchVarNm = pchExpr;
+
+                    /* Deal with known special accessors: [@self]VAR, [@super]VAR. */
+                    if (cchType == 0)
+                    {
+                        int fSuper;
+
+                        if (WORD_IS(pchObjName, cchObjName, "self"))
+                            fSuper = 0;
+                        else if (WORD_IS(pchObjName, cchObjName, "super"))
+                            fSuper = 1;
+                        else
+                        {
+                            kbuild_report_problem(MAX(enmSeverity, kBuildSeverity_Error), pFileLoc,
+                                                  _("Invalid special kBuild object accessor: '%.*s'"),
+                                                  (int)cchOrgExpr, pchOrgExpr);
+                            if (penmType)
+                                *penmType = kBuildType_Invalid;
+                            return NULL;
+                        }
+                        if (g_pTopKbEvalData)
+                        {
+                            struct kbuild_object *pObj = g_pTopKbEvalData->pObj;
+                            struct kbuild_object *pParent;
+
+                            if (penmType)
+                                *penmType = pObj->enmType;
+
+                            if (!fSuper)
+                                return pObj;
+
+                            pParent = get_kbuild_object_parent(pObj, MAX(enmSeverity, kBuildSeverity_Error));
+                            if (pParent)
+                                return pParent;
+                        }
+                        else
+                            kbuild_report_problem(MAX(enmSeverity, kBuildSeverity_Error), pFileLoc,
+                                                  _("The '%.*s' accessor can only be used in the context of a kBuild object"),
+                                                  (int)cchOrgExpr, pchOrgExpr);
+                        if (penmType)
+                            *penmType = kBuildType_Invalid;
+                    }
+                    else
+                    {
+                        /* Genric accessor. Check the type and look up the object. */
+                        enum kBuildType enmType = eval_kbuild_type_from_string(pchType, cchType);
+                        if (penmType)
+                            *penmType = enmType;
+                        if (enmType != kBuildType_Invalid)
+                        {
+                            struct kbuild_object *pObj = lookup_kbuild_object(enmType, pchObjName, cchObjName);
+                            if (pObj)
+                                return pObj;
+
+                            /* failed. */
+                            kbuild_report_problem(enmSeverity, pFileLoc,
+                                                  _("kBuild object '%s' not found in kBuild variable accessor '%.*s'"),
+                                                  (int)cchObjName, pchObjName, (int)cchOrgExpr, pchOrgExpr);
+                        }
+                        else
+                            kbuild_report_problem(MAX(enmSeverity, kBuildSeverity_Error), pFileLoc,
+                                                  _("Invalid type '%.*s' specified in kBuild variable accessor '%.*s'"),
+                                                  (int)cchType, pchType, (int)cchOrgExpr, pchOrgExpr);
+                    }
+                    return NULL;
+                }
+            }
+        }
+    }
+
+    *ppchVarNm = NULL;
+    *pcchVarNm = 0;
+    if (penmType)
+        *penmType = kBuildType_Invalid;
+    return KOBJ_NOT_KBUILD_ACCESSOR;
+}
+
+/**
+ * Looks up a variable in a kBuild object.
+ *
+ * The caller has done minimal matching, i.e. starting square brackets and
+ * minimum length.  We do the rest here.
+ *
+ * @returns Pointer to the variable if found.
+ * @retval  NULL if not found.
+ * @retval  VAR_NOT_KBUILD_ACCESSOR if no a kBuild variable accessor.
+ *
+ * @param   pchName             The kBuild variable accessor expression.
+ * @param   cchName             Length of the expression.
+ */
+struct variable *
+lookup_kbuild_object_variable_accessor(const char *pchName, size_t cchName)
+{
+    /*const char * const     pchOrgName = pchName;*/
+    /*size_t       const     cchOrgName = cchName;*/
+    const char *           pchVarNm;
+    size_t                 cchVarNm;
+    struct kbuild_object  *pObj;
+
+    pObj = parse_kbuild_object_variable_accessor(pchName, cchName, kBuildSeverity_Warning, NULL, &pchVarNm, &cchVarNm, NULL);
+    if (pObj != KOBJ_NOT_KBUILD_ACCESSOR)
+    {
+        if (pObj)
+        {
+            /*
+             * Do the variable lookup.
+             */
+            const char *pszCachedName = strcache2_lookup(&variable_strcache, pchVarNm, cchVarNm);
+            if (pszCachedName)
+            {
+                struct variable  VarKey;
+                struct variable *pVar;
+                VarKey.name   = pszCachedName;
+                VarKey.length = cchName;
+
+                pVar = (struct variable *)hash_find_item_strcached(&pObj->pVariables->set->table, &VarKey);
+                if (pVar)
+                    return pVar;
+
+                /*
+                 * Not found, check ancestors if any.
+                 */
+                if (pObj->pszParent || pObj->pszTemplate)
+                {
+                    struct kbuild_object *pParent = pObj;
+                    for (;;)
+                    {
+                        pParent = resolve_kbuild_object_parent(pParent, 0 /*fQuiet*/);
+                        if (!pParent)
+                            break;
+                        pVar = (struct variable *)hash_find_item_strcached(&pParent->pVariables->set->table, &VarKey);
+                        if (pVar)
+                            return pVar;
+                    }
+                }
+            }
+        }
+
+        /* Not found one way or the other. */
+        return NULL;
+    }
+
+    /* Not a kBuild object variable accessor. */
+    return VAR_NOT_KBUILD_ACCESSOR;
+}
+
+/** @} */
+
+void print_kbuild_data_base(void)
+{
+    struct kbuild_object *pCur;
+
+    puts(_("\n# kBuild defines"));
+
+    for (pCur = g_pHeadKbObjs; pCur; pCur = pCur->pGlobalNext)
+    {
+        printf("\nkBuild-define-%s %s",
+               eval_kbuild_type_to_string(pCur->enmType), pCur->pszName);
+        if (pCur->pszParent)
+            printf(" extending %s", pCur->pszParent);
+        if (pCur->pszTemplate)
+            printf(" using %s", pCur->pszTemplate);
+        putchar('\n');
+
+        print_variable_set(pCur->pVariables->set, "", 0);
+
+        printf("kBuild-endef-%s  %s\n",
+               eval_kbuild_type_to_string(pCur->enmType), pCur->pszName);
+    }
+    /** @todo hash stats. */
+}
+
+void print_kbuild_define_stats(void)
+{
+    /* later when hashing stuff */
+}
+
diff --git a/src/kmk/kbuild.c b/src/kmk/kbuild.c
new file mode 100644
index 0000000..56a0b28
--- /dev/null
+++ b/src/kmk/kbuild.c
@@ -0,0 +1,3030 @@
+/* $Id: kbuild.c 3425 2020-08-21 12:45:06Z bird $ */
+/** @file
+ * kBuild specific make functionality.
+ */
+
+/*
+ * Copyright (c) 2006-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/* No GNU coding style here! */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#define NO_MEMCOPY_HACK
+#include "makeint.h"
+#include "filedef.h"
+#include "variable.h"
+#include "dep.h"
+#include "debug.h"
+#ifdef WINDOWS32
+# include "pathstuff.h"
+# include <Windows.h>
+#endif
+#if defined(__APPLE__)
+# include <mach-o/dyld.h>
+#endif
+#if defined(__FreeBSD__)
+# include <dlfcn.h>
+# include <sys/link_elf.h>
+#endif
+
+#include "kbuild.h"
+#include "k/kDefs.h"
+
+#include <assert.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** Helper for passing a string constant to kbuild_get_variable_n. */
+#define ST(strconst) strconst, sizeof(strconst) - 1
+
+#if 1
+# define my_memcpy(dst, src, len) \
+    do { \
+        if (len > 8) \
+            memcpy(dst, src, len); \
+        else \
+            switch (len) \
+            { \
+                case 8: dst[7] = src[7]; /* fall thru */ \
+                case 7: dst[6] = src[6]; /* fall thru */ \
+                case 6: dst[5] = src[5]; /* fall thru */ \
+                case 5: dst[4] = src[4]; /* fall thru */ \
+                case 4: dst[3] = src[3]; /* fall thru */ \
+                case 3: dst[2] = src[2]; /* fall thru */ \
+                case 2: dst[1] = src[1]; /* fall thru */ \
+                case 1: dst[0] = src[0]; /* fall thru */ \
+                case 0: break; \
+            } \
+    } while (0)
+#elif defined(__GNUC__)
+# define my_memcpy __builtin_memcpy
+#elif defined(_MSC_VER)
+# pragma instrinic(memcpy)
+# define my_memcpy memcpy
+#endif
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** The argv[0] passed to main. */
+static const char *g_pszExeName;
+/** The initial working directory. */
+static char *g_pszInitialCwd;
+
+
+/**
+ * Initialize kBuild stuff.
+ *
+ * @param   argc    Number of arguments to main().
+ * @param   argv    The main() argument vector.
+ */
+void init_kbuild(int argc, char **argv)
+{
+    int rc;
+    PATH_VAR(szTmp);
+
+    /*
+     * Get the initial cwd for use in my_abspath.
+     */
+#ifdef WINDOWS32
+    if (getcwd_fs(szTmp, GET_PATH_MAX) != 0)
+#else
+    if (getcwd(szTmp, GET_PATH_MAX) != 0)
+#endif
+        g_pszInitialCwd = xstrdup(szTmp);
+    else
+        O(fatal, NILF, _("getcwd failed"));
+
+    /*
+     * Determin the executable name.
+     */
+    rc = -1;
+#if defined(__APPLE__)
+    {
+        const char *pszImageName = _dyld_get_image_name(0);
+        if (pszImageName)
+        {
+            size_t cchImageName = strlen(pszImageName);
+            if (cchImageName < GET_PATH_MAX)
+            {
+                memcpy(szTmp, pszImageName, cchImageName + 1);
+                rc = 0;
+            }
+        }
+    }
+
+#elif defined(__FreeBSD__)
+    rc = readlink("/proc/curproc/file", szTmp, GET_PATH_MAX - 1);
+    if (rc < 0 || rc == GET_PATH_MAX - 1)
+    {
+        rc = -1;
+# if 0 /* doesn't work because l_name isn't always absolute, it's just argv0 from exec or something. */
+        /* /proc is optional, try rtdl. */
+        void *hExe = dlopen(NULL, 0);
+        rc = -1;
+        if (hExe)
+        {
+            struct link_map const *pLinkMap = 0;
+            if (dlinfo(hExe, RTLD_DI_LINKMAP, &pLinkMap) == 0)
+            {
+                const char *pszImageName = pLinkMap->l_name;
+                size_t cchImageName = strlen(pszImageName);
+                if (cchImageName < GET_PATH_MAX)
+                {
+                    memcpy(szTmp, pszImageName, cchImageName + 1);
+                    rc = 0;
+                }
+            }
+
+        }
+# endif
+    }
+    else
+        szTmp[rc] = '\0';
+
+#elif defined(__gnu_linux__) || defined(__linux__)
+    rc = readlink("/proc/self/exe", szTmp, GET_PATH_MAX - 1);
+    if (rc < 0 || rc == GET_PATH_MAX - 1)
+        rc = -1;
+    else
+        szTmp[rc] = '\0';
+
+#elif defined(__OS2__)
+    _execname(szTmp, GET_PATH_MAX);
+    rc = 0;
+
+#elif defined(__sun__)
+    {
+        char szTmp2[64];
+        snprintf(szTmp2, sizeof(szTmp2), "/proc/%ld/path/a.out", (long)getpid());
+        rc = readlink(szTmp2, szTmp, GET_PATH_MAX - 1);
+        if (rc < 0 || rc == GET_PATH_MAX - 1)
+            rc = -1;
+        else
+            szTmp[rc] = '\0';
+    }
+
+#elif defined(WINDOWS32)
+    if (GetModuleFileName(GetModuleHandle(NULL), szTmp, GET_PATH_MAX))
+        rc = 0;
+
+#endif
+
+#if !defined(__OS2__) && !defined(WINDOWS32)
+    /* fallback, try use the path to locate the binary. */
+    if (   rc < 0
+        && access(argv[0], X_OK))
+    {
+        size_t cchArgv0 = strlen(argv[0]);
+        const char *pszPath = getenv("PATH");
+        char *pszCopy = xstrdup(pszPath ? pszPath : ".");
+        char *psz = pszCopy;
+        while (*psz)
+        {
+            size_t cch;
+            char *pszEnd = strchr(psz, PATH_SEPARATOR_CHAR);
+            if (!pszEnd)
+                pszEnd = strchr(psz, '\0');
+            cch = pszEnd - psz;
+            if (cch + cchArgv0 + 2 <= GET_PATH_MAX)
+            {
+                memcpy(szTmp, psz, cch);
+                szTmp[cch] = '/';
+                memcpy(&szTmp[cch + 1], argv[0], cchArgv0 + 1);
+                if (!access(szTmp, X_OK))
+                {
+                    rc = 0;
+                    break;
+                }
+            }
+
+            /* next */
+            psz = pszEnd;
+            while (*psz == PATH_SEPARATOR_CHAR)
+               psz++;
+        }
+        free(pszCopy);
+    }
+#endif
+
+    if (rc < 0)
+        g_pszExeName = argv[0];
+    else
+        g_pszExeName = xstrdup(szTmp);
+
+    (void)argc;
+}
+
+
+/**
+ * Wrapper that ensures correct starting_directory.
+ */
+static char *my_abspath(const char *pszIn, char *pszOut)
+{
+    char *pszSaved, *pszRet;
+
+    pszSaved = starting_directory;
+    starting_directory = g_pszInitialCwd;
+    pszRet = abspath(pszIn, pszOut);
+    starting_directory = pszSaved;
+
+    return pszRet;
+}
+
+
+/**
+ * Determin the KBUILD_PATH value.
+ *
+ * @returns Pointer to static a buffer containing the value (consider it read-only).
+ */
+const char *get_kbuild_path(void)
+{
+    static const char *s_pszPath = NULL;
+    if (!s_pszPath)
+    {
+        PATH_VAR(szTmpPath);
+        const char *pszEnvVar = getenv("KBUILD_PATH");
+        if (    !pszEnvVar
+            ||  !my_abspath(pszEnvVar, szTmpPath))
+        {
+            pszEnvVar = getenv("PATH_KBUILD");
+            if (    !pszEnvVar
+                ||  !my_abspath(pszEnvVar, szTmpPath))
+            {
+#ifdef KBUILD_PATH
+                return s_pszPath = KBUILD_PATH;
+#else
+                /* $(abspath $(KBUILD_BIN_PATH)/../..)*/
+                size_t cch = strlen(get_kbuild_bin_path());
+                char *pszTmp2 = alloca(cch + sizeof("/../.."));
+                strcat(strcpy(pszTmp2, get_kbuild_bin_path()), "/../..");
+                if (!my_abspath(pszTmp2, szTmpPath))
+                    O(fatal, NILF, _("failed to determin KBUILD_PATH"));
+#endif
+            }
+        }
+        s_pszPath = xstrdup(szTmpPath);
+    }
+    return s_pszPath;
+}
+
+
+/**
+ * Determin the KBUILD_BIN_PATH value.
+ *
+ * @returns Pointer to static a buffer containing the value (consider it read-only).
+ */
+const char *get_kbuild_bin_path(void)
+{
+    static const char *s_pszPath = NULL;
+    if (!s_pszPath)
+    {
+        PATH_VAR(szTmpPath);
+
+        const char *pszEnvVar = getenv("KBUILD_BIN_PATH");
+        if (    !pszEnvVar
+            ||  !my_abspath(pszEnvVar, szTmpPath))
+        {
+            pszEnvVar = getenv("PATH_KBUILD_BIN");
+            if (    !pszEnvVar
+                ||  !my_abspath(pszEnvVar, szTmpPath))
+            {
+#ifdef KBUILD_PATH
+                return s_pszPath = KBUILD_BIN_PATH;
+#else
+                /* $(abspath $(dir $(ARGV0)).) */
+                size_t cch = strlen(g_pszExeName);
+                char *pszTmp2 = alloca(cch + sizeof("."));
+                char *pszSep = pszTmp2 + cch - 1;
+                memcpy(pszTmp2, g_pszExeName, cch);
+# ifdef HAVE_DOS_PATHS
+                while (pszSep >= pszTmp2 && *pszSep != '/' && *pszSep != '\\' && *pszSep != ':')
+# else
+                while (pszSep >= pszTmp2 && *pszSep != '/')
+# endif
+                    pszSep--;
+                if (pszSep >= pszTmp2)
+                  strcpy(pszSep + 1, ".");
+                else
+                  strcpy(pszTmp2, ".");
+
+                if (!my_abspath(pszTmp2, szTmpPath))
+                    OSS(fatal, NILF, _("failed to determin KBUILD_BIN_PATH (pszTmp2=%s szTmpPath=%s)"), pszTmp2, szTmpPath);
+#endif /* !KBUILD_PATH */
+            }
+        }
+        s_pszPath = xstrdup(szTmpPath);
+    }
+    return s_pszPath;
+}
+
+
+/**
+ * Determin the location of default kBuild shell.
+ *
+ * @returns Pointer to static a buffer containing the location (consider it read-only).
+ */
+const char *get_default_kbuild_shell(void)
+{
+    static char *s_pszDefaultShell = NULL;
+    if (!s_pszDefaultShell)
+    {
+#if defined(__OS2__) || defined(_WIN32) || defined(WINDOWS32)
+        static const char s_szShellName[] = "/kmk_ash.exe";
+#else
+        static const char s_szShellName[] = "/kmk_ash";
+#endif
+        const char *pszBin = get_kbuild_bin_path();
+        size_t cchBin = strlen(pszBin);
+        s_pszDefaultShell = xmalloc(cchBin + sizeof(s_szShellName));
+        memcpy(s_pszDefaultShell, pszBin, cchBin);
+        memcpy(&s_pszDefaultShell[cchBin], s_szShellName, sizeof(s_szShellName));
+    }
+    return s_pszDefaultShell;
+}
+
+#ifdef KMK_HELPERS
+
+/**
+ * Applies the specified default path to any relative paths in *ppsz.
+ *
+ * @param   pDefPath        The default path.
+ * @param   ppsz            Pointer to the string pointer. If we expand anything, *ppsz
+ *                          will be replaced and the caller is responsible for calling free() on it.
+ * @param   pcch            IN: *pcch contains the current string length.
+ *                          OUT: *pcch contains the new string length.
+ * @param   pcchAlloc       *pcchAlloc contains the length allocated for the string. Can be NULL.
+ * @param   fCanFree        Whether *ppsz should be freed when we replace it.
+ */
+static void
+kbuild_apply_defpath(struct variable *pDefPath, char **ppsz, unsigned int *pcch, unsigned int *pcchAlloc, int fCanFree)
+{
+    unsigned int cchInCur;
+    unsigned int cchMaxRelative = 0;
+    const char *pszInCur;
+
+    /*
+     * The first pass, count the relative paths.
+     */
+    const char *pszIterator = *ppsz;
+    const char * const pszEos = pszIterator + *pcch;
+    unsigned int cRelativePaths = 0;
+    assert(*pszEos == '\0');
+    while ((pszInCur = find_next_file_token(&pszIterator, pszEos, &cchInCur)) != NULL)
+    {
+        /* is relative? */
+#ifdef HAVE_DOS_PATHS
+        if (pszInCur[0] != '/' && pszInCur[0] != '\\' && (cchInCur < 2 || pszInCur[1] != ':'))
+#else
+        if (pszInCur[0] != '/')
+#endif
+        {
+            cRelativePaths++;
+            if (cchInCur > cchMaxRelative)
+                cchMaxRelative = cchInCur;
+        }
+    }
+
+    /*
+     * The second pass construct the new string.
+     */
+    if (cRelativePaths)
+    {
+        size_t const cchAbsPathBuf = MAX(GET_PATH_MAX, pDefPath->value_length + cchInCur + 1 + 16);
+        char *pszAbsPathOut = (char *)alloca(cchAbsPathBuf);
+        char *pszAbsPathIn  = (char *)alloca(cchAbsPathBuf);
+        size_t cchAbsDefPath;
+        size_t cchOut;
+        char *pszOut;
+        char *pszOutCur;
+        const char *pszInNextCopy = *ppsz;
+
+        /* make defpath absolute and have a trailing slash first. */
+        if (abspath(pDefPath->value, pszAbsPathIn) == NULL)
+            memcpy(pszAbsPathIn, pDefPath->value, pDefPath->value_length);
+        cchAbsDefPath = strlen(pszAbsPathIn);
+#ifdef HAVE_DOS_PATHS
+        if (pszAbsPathIn[cchAbsDefPath - 1] != '/' && pszAbsPathIn[cchAbsDefPath - 1] != '\\')
+#else
+        if (pszAbsPathIn[cchAbsDefPath - 1] != '/')
+#endif
+            pszAbsPathIn[cchAbsDefPath++] = '/';
+
+        cchOut = *pcch + cRelativePaths * cchAbsDefPath + 1;
+        pszOutCur = pszOut = xmalloc(cchOut);
+
+        cRelativePaths = 0;
+        pszIterator = *ppsz;
+        while ((pszInCur = find_next_file_token(&pszIterator, pszEos, &cchInCur)))
+        {
+            /* is relative? */
+#ifdef HAVE_DOS_PATHS
+            if (pszInCur[0] != '/' && pszInCur[0] != '\\' && (cchInCur < 2 || pszInCur[1] != ':'))
+#else
+            if (pszInCur[0] != '/')
+#endif
+            {
+                const char *pszToCopy;
+                size_t      cchToCopy;
+
+                /* Create the abspath input. */
+                memcpy(&pszAbsPathIn[cchAbsDefPath], pszInCur, cchInCur);
+                pszAbsPathIn[cchAbsDefPath + cchInCur] = '\0';
+
+                pszToCopy = abspath(pszAbsPathIn, pszAbsPathOut);
+                if (!pszToCopy)
+                    pszToCopy = pszAbsPathIn;
+
+                /* copy leading input */
+                if (pszInCur != pszInNextCopy)
+                {
+                    const size_t cchCopy = pszInCur - pszInNextCopy;
+                    memcpy(pszOutCur, pszInNextCopy, cchCopy);
+                    pszOutCur += cchCopy;
+                }
+                pszInNextCopy = pszInCur + cchInCur;
+
+                /* copy out the abspath. */
+                cchToCopy = strlen(pszToCopy);
+                assert(cchToCopy <= cchAbsDefPath + cchInCur);
+                memcpy(pszOutCur, pszToCopy, cchToCopy);
+                pszOutCur += cchToCopy;
+            }
+            /* else: Copy absolute paths as bulk when we hit then next relative one or the end. */
+        }
+
+        /* the final copy (includes the nil). */
+        cchInCur = *ppsz + *pcch - pszInNextCopy;
+        memcpy(pszOutCur, pszInNextCopy, cchInCur);
+        pszOutCur += cchInCur;
+        *pszOutCur = '\0';
+        assert((size_t)(pszOutCur - pszOut) < cchOut);
+
+        /* set return values */
+        if (fCanFree)
+            free(*ppsz);
+        *ppsz = pszOut;
+        *pcch = pszOutCur - pszOut;
+        if (pcchAlloc)
+            *pcchAlloc = cchOut;
+    }
+}
+
+/**
+ * Gets a variable that must exist.
+ * Will cause a fatal failure if the variable doesn't exist.
+ *
+ * @returns Pointer to the variable.
+ * @param   pszName     The variable name.
+ * @param   cchName     The name length.
+ */
+MY_INLINE struct variable *
+kbuild_get_variable_n(const char *pszName, size_t cchName)
+{
+    struct variable *pVar = lookup_variable(pszName, cchName);
+    if (!pVar)
+        fatal(NILF, cchName, _("variable `%.*s' isn't defined!"), (int)cchName, pszName);
+    if (pVar->recursive)
+        fatal(NILF, cchName, _("variable `%.*s' is defined as `recursive' instead of `simple'!"), (int)cchName, pszName);
+
+    MY_ASSERT_MSG(strlen(pVar->value) == pVar->value_length,
+                  ("%u != %u %.*s\n", pVar->value_length, (unsigned int)strlen(pVar->value), (int)cchName, pVar->name));
+    return pVar;
+}
+
+
+/**
+ * Gets a variable that must exist and can be recursive.
+ * Will cause a fatal failure if the variable doesn't exist.
+ *
+ * @returns Pointer to the variable.
+ * @param   pszName     The variable name.
+ */
+static struct variable *
+kbuild_get_recursive_variable(const char *pszName)
+{
+    struct variable *pVar = lookup_variable(pszName, strlen(pszName));
+    if (!pVar)
+        OS(fatal, NILF, _("variable `%s' isn't defined!"), pszName);
+
+    MY_ASSERT_MSG(strlen(pVar->value) == pVar->value_length,
+                  ("%u != %u %s\n", pVar->value_length, (unsigned int)strlen(pVar->value), pVar->name));
+    return pVar;
+}
+
+
+/**
+ * Gets a variable that doesn't have to exit, but if it does can be recursive.
+ *
+ * @returns Pointer to the variable.
+ *          NULL if not found.
+ * @param   pszName     The variable name. Doesn't need to be terminated.
+ * @param   cchName     The name length.
+ */
+static struct variable *
+kbuild_query_recursive_variable_n(const char *pszName, size_t cchName)
+{
+    struct variable *pVar = lookup_variable(pszName, cchName);
+    MY_ASSERT_MSG(!pVar || strlen(pVar->value) == pVar->value_length,
+                  ("%u != %u %.*s\n", pVar->value_length, (unsigned int)strlen(pVar->value), (int)cchName, pVar->name));
+    return pVar;
+}
+
+
+/**
+ * Gets a variable that doesn't have to exit, but if it does can be recursive.
+ *
+ * @returns Pointer to the variable.
+ *          NULL if not found.
+ * @param   pszName     The variable name.
+ */
+static struct variable *
+kbuild_query_recursive_variable(const char *pszName)
+{
+    return kbuild_query_recursive_variable_n(pszName, strlen(pszName));
+}
+
+
+/**
+ * Converts the specified variable into a 'simple' one.
+ * @returns pVar.
+ * @param   pVar        The variable.
+ */
+static struct variable *
+kbuild_simplify_variable(struct variable *pVar)
+{
+    if (memchr(pVar->value, '$', pVar->value_length))
+    {
+        unsigned int value_len;
+        char *pszExpanded = allocated_variable_expand_2(pVar->value, pVar->value_length, &value_len);
+#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+        if (pVar->rdonly_val)
+            pVar->rdonly_val = 0;
+        else
+#endif
+            free(pVar->value);
+        assert(pVar->origin != o_automatic);
+        pVar->value = pszExpanded;
+        pVar->value_length = value_len;
+        pVar->value_alloc_len = value_len + 1;
+    }
+    pVar->recursive = 0;
+    VARIABLE_CHANGED(pVar);
+    return pVar;
+}
+
+
+/**
+ * Looks up a variable.
+ * The value_length field is valid upon successful return.
+ *
+ * @returns Pointer to the variable. NULL if not found.
+ * @param   pszName     The variable name.
+ * @param   cchName     The name length.
+ */
+MY_INLINE struct variable *
+kbuild_lookup_variable_n(const char *pszName, size_t cchName)
+{
+    struct variable *pVar = lookup_variable(pszName, cchName);
+    if (pVar)
+    {
+        MY_ASSERT_MSG(strlen(pVar->value) == pVar->value_length,
+                      ("%u != %u %.*s\n", pVar->value_length, (unsigned int)strlen(pVar->value), (int)cchName, pVar->name));
+
+        /* Make sure the variable is simple, convert it if necessary.
+           Note! Must NOT do this for the dynamic INCS of sdks/ReorderCompilerIncs.kmk */
+        if (!pVar->recursive)
+        { /* likely */ }
+        else if (   cchName < sizeof("SDK_ReorderCompilerIncs_INCS.") - 1U
+                 || pszName[0] != 'S'
+                 || pszName[4] != 'R'
+                 || memcmp(pszName, "SDK_ReorderCompilerIncs_INCS.", sizeof("SDK_ReorderCompilerIncs_INCS.") - 1U) == 0)
+            kbuild_simplify_variable(pVar);
+    }
+    return pVar;
+}
+
+
+/**
+ * Looks up an non-empty variable when simplified and spaces skipped.
+ *
+ * This handy when emulating $(firstword )/$(lastword ) behaviour.
+ *
+ * @returns Pointer to the variable. NULL if not found.
+ * @param   pszName     The variable name.
+ * @param   cchName     The name length.
+ */
+MY_INLINE struct variable *
+kbuild_lookup_not_empty_variable_n(const char *pszName, size_t cchName)
+{
+    struct variable *pVar = kbuild_lookup_variable_n(pszName, cchName);
+    if (pVar && !pVar->recursive)
+    {
+        /*
+         * Skip spaces and make sure it's non-zero.
+         */
+        char *psz = pVar->value;
+        if (!ISSPACE(*psz))
+        { /* kind of likely */ }
+        else
+            do
+                psz++;
+            while (ISSPACE(*psz));
+
+        if (*psz)
+        { /*kind of likely */ }
+        else
+            pVar = NULL;
+    }
+    return pVar;
+}
+
+
+/**
+ * Looks up a variable.
+ * The value_length field is valid upon successful return.
+ *
+ * @returns Pointer to the variable. NULL if not found.
+ * @param   pszName     The variable name.
+ */
+MY_INLINE struct variable *
+kbuild_lookup_variable(const char *pszName)
+{
+    return kbuild_lookup_variable_n(pszName, strlen(pszName));
+}
+
+
+/**
+ * Looks up a variable and applies default a path to all relative paths.
+ * The value_length field is valid upon successful return.
+ *
+ * @returns Pointer to the variable. NULL if not found.
+ * @param   pDefPath    The default path.
+ * @param   pszName     The variable name.
+ * @param   cchName     The name length.
+ */
+MY_INLINE struct variable *
+kbuild_lookup_variable_defpath_n(struct variable *pDefPath, const char *pszName, size_t cchName)
+{
+    struct variable *pVar = kbuild_lookup_variable_n(pszName, cchName);
+    if (pVar && pDefPath)
+    {
+        assert(pVar->origin != o_automatic);
+#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+        assert(!pVar->rdonly_val);
+#endif
+        kbuild_apply_defpath(pDefPath, &pVar->value, &pVar->value_length, &pVar->value_alloc_len, 1);
+    }
+    return pVar;
+}
+
+
+/**
+ * Looks up a variable and applies default a path to all relative paths.
+ * The value_length field is valid upon successful return.
+ *
+ * @returns Pointer to the variable. NULL if not found.
+ * @param   pDefPath    The default path.
+ * @param   pszName     The variable name.
+ */
+MY_INLINE struct variable *
+kbuild_lookup_variable_defpath(struct variable *pDefPath, const char *pszName)
+{
+    struct variable *pVar = kbuild_lookup_variable(pszName);
+    if (pVar && pDefPath)
+    {
+        assert(pVar->origin != o_automatic);
+#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+        assert(!pVar->rdonly_val);
+#endif
+        kbuild_apply_defpath(pDefPath, &pVar->value, &pVar->value_length, &pVar->value_alloc_len, 1);
+    }
+    return pVar;
+}
+
+
+/**
+ * Gets the first defined property variable.
+ *
+ * When pBldType is given, additional property variations are consulted.
+ * See _TARGET_TOOL/r2433 in footer.kmk for the target-level difference.
+ * Similar extended property lookup is applied to the source part if the
+ * fExtendedSource parameter is non-zero (not done yet as it'll be expensive).
+ *
+ * Since r3415 this function will use $(target)_2_$(type)TOOL to cache the
+ * result of the target specific part of the lookup (_TARGET_TOOL).
+ */
+static struct variable *
+kbuild_first_prop(struct variable *pTarget, struct variable *pSource,
+                  struct variable *pTool, struct variable *pType,
+                  struct variable *pBldTrg, struct variable *pBldTrgArch, struct variable *pBldType,
+                  const char *pszPropF1, char cchPropF1,
+                  const char *pszPropF2, char cchPropF2,
+                  int fExtendedSource,
+                  const char *pszVarName)
+{
+    struct variable *pVar;
+    size_t cchBuf;
+    char *pszBuf;
+    char *psz, *psz1, *psz2, *psz3, *psz4, *pszEnd;
+    int fCacheIt = 1;
+
+    fExtendedSource = fExtendedSource && pBldType != NULL;
+
+    /* calc and allocate a too big name buffer. */
+    cchBuf = cchPropF2 + 1
+           + cchPropF1 + 1
+           + pTarget->value_length + 1
+           + pSource->value_length + 1
+           + (pTool ? pTool->value_length + 1 : 0)
+           + pType->value_length + 1
+           + pBldTrg->value_length + 1
+           + pBldTrgArch->value_length + 1
+           + (pBldType ? pBldType->value_length + 1 : 0);
+    pszBuf = xmalloc(cchBuf);
+
+#define ADD_VAR(pVar)           do { my_memcpy(psz, (pVar)->value, (pVar)->value_length); psz += (pVar)->value_length; } while (0)
+#define ADD_STR(pszStr, cchStr) do { my_memcpy(psz, (pszStr), (cchStr)); psz += (cchStr); } while (0)
+#define ADD_CSTR(pszStr)        do { my_memcpy(psz, pszStr, sizeof(pszStr) - 1); psz += sizeof(pszStr) - 1; } while (0)
+#define ADD_CH(ch)              do { *psz++ = (ch); } while (0)
+
+    /*
+     * $(target)_$(source)_$(type)$(propf2).$(bld_trg).$(bld_trg_arch).$(bld_type)
+     *   ...
+     * $(target)_$(source)_$(type)$(propf2)
+     */
+    psz = pszBuf;
+    ADD_VAR(pTarget);
+    ADD_CH('_');
+    ADD_VAR(pSource);
+    ADD_CH('_');
+    psz1 = psz;
+    ADD_VAR(pType);
+    ADD_STR(pszPropF2, cchPropF2);
+#define DO_VARIATIONS(a_fExtended) do { \
+    psz2 = psz; \
+    ADD_CH('.'); \
+    ADD_VAR(pBldTrg); \
+    psz3 = psz; \
+    ADD_CH('.'); \
+    ADD_VAR(pBldTrgArch); \
+    psz4 = psz; \
+    if ((a_fExtended) && pBldType) \
+    { \
+        ADD_CH('.'); \
+        ADD_VAR(pBldType); \
+        pVar = kbuild_lookup_not_empty_variable_n(pszBuf, psz - pszBuf); \
+        \
+        /* <lead>.$(bld_trg).$(bld_trg_arch) */ \
+        if (!pVar) \
+            pVar = kbuild_lookup_not_empty_variable_n(pszBuf, psz4 - pszBuf); \
+        \
+        /* <lead>.$(bld_trg).$(bld_type) */ \
+        if (!pVar) \
+        { \
+            psz = psz3 + 1; \
+            ADD_VAR(pBldType); \
+            pVar = kbuild_lookup_not_empty_variable_n(pszBuf, psz - pszBuf); \
+        } \
+        \
+        /* <lead>.$(bld_trg_arch) */ \
+        if (!pVar) \
+        { \
+            psz = psz2 + 1; \
+            ADD_VAR(pBldTrgArch); \
+            pVar = kbuild_lookup_not_empty_variable_n(pszBuf, psz - pszBuf); \
+        } \
+        \
+        /* <lead>.$(bld_trg) */ \
+        if (!pVar) \
+        { \
+            psz = psz2 + 1; \
+            ADD_VAR(pBldTrg); \
+            pVar = kbuild_lookup_not_empty_variable_n(pszBuf, psz - pszBuf); \
+        } \
+        \
+        /* <lead>.$(bld_type) */ \
+        if (!pVar) \
+        { \
+            psz = psz2 + 1; \
+            ADD_VAR(pBldType); \
+            pVar = kbuild_lookup_not_empty_variable_n(pszBuf, psz - pszBuf); \
+        } \
+    } \
+    else \
+    { \
+        /* <lead>.$(bld_trg).$(bld_trg_arch) */ \
+        pVar = kbuild_lookup_not_empty_variable_n(pszBuf, psz4 - pszBuf); \
+        \
+        /* <lead>.$(bld_trg) */ \
+        if (!pVar) \
+            pVar = kbuild_lookup_not_empty_variable_n(pszBuf, psz3 - pszBuf); \
+    } \
+    \
+    /* <lead> */ \
+    if (!pVar) \
+        pVar = kbuild_lookup_not_empty_variable_n(pszBuf, psz2 - pszBuf); \
+} while (0)
+    DO_VARIATIONS(fExtendedSource);
+
+    /*
+     * $(target)_$(source)_$(propf2).$(bld_trg).$(bld_trg_arch).$(bld_type) [omit $(type) prefix to $(propf2)]
+     *   ...
+     * $(target)_$(source)_$(propf2)
+     */
+    if (!pVar)
+    {
+        psz = psz1; /* rewind to '$(target)_$(source)_' */
+        ADD_STR(pszPropF2, cchPropF2);
+        DO_VARIATIONS(fExtendedSource);
+    }
+
+    /*
+     * $(source)_$(type)$(propf2).$(bld_trg).$(bld_trg_arch).$(bld_type)
+     *   ...
+     * $(source)_$(type)$(propf2)
+     */
+    if (!pVar)
+    {
+        psz = pszBuf;
+        ADD_VAR(pSource);
+        ADD_CH('_');
+        psz1 = psz;
+        ADD_VAR(pType);
+        ADD_STR(pszPropF2, cchPropF2);
+        DO_VARIATIONS(fExtendedSource);
+
+        /*
+         * $(source)_$(propf2).$(bld_trg).$(bld_trg_arch).$(bld_type)  [omit $(type) prefix to $(propf2)]
+         *   ...
+         * $(source)_$(propf2)
+         */
+        if (!pVar)
+        {
+            psz = psz1; /* rewind to '$(source)_' */
+            ADD_STR(pszPropF2, cchPropF2);
+            DO_VARIATIONS(fExtendedSource);
+        }
+    }
+
+    /*
+     * Check the cache: $(target)_2_$(type)$(propf2)
+     */
+    if (pVar)
+        fCacheIt = 0;
+    else if (fCacheIt)
+    {
+        psz = pszBuf;
+        ADD_VAR(pTarget);
+        ADD_STR("_2_", 3);
+        ADD_VAR(pType);
+        ADD_STR(pszPropF2, cchPropF2);
+        pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf);
+
+        /* If found, this can be duplicated and returned directly. No value stripping
+           needed as we defined it (or at least should have) ourselves. */
+        if (pVar)
+        {
+            pVar = define_variable_vl(pszVarName, strlen(pszVarName), pVar->value, pVar->value_length,
+                                      1 /* duplicate */, o_local, 0 /* !recursive */);
+            free(pszBuf);
+            return pVar;
+        }
+    }
+
+    /*
+     * $(target)_$(type)$(propf2).$(bld_trg).$(bld_trg_arch).$(bld_type)
+     *   ...
+     * $(target)_$(type)$(propf2)
+     */
+    if (!pVar)
+    {
+        psz = pszBuf;
+        ADD_VAR(pTarget);
+        ADD_CH('_');
+        psz1 = psz;
+        ADD_VAR(pType);
+        ADD_STR(pszPropF2, cchPropF2);
+        DO_VARIATIONS(1);
+
+        /*
+         * $(target)_$(propf2).$(bld_trg).$(bld_trg_arch).$(bld_type)  [omit $(type) prefix to $(propf2)]
+         *   ...
+         * $(target)_$(propf2)
+         */
+        if (!pVar)
+        {
+            psz = psz1; /* rewind to '$(target)_' */
+            ADD_STR(pszPropF2, cchPropF2);
+            DO_VARIATIONS(1);
+        }
+    }
+
+    /*
+     * TOOL_$(tool)_$(type)$(propf2).$(bld_trg).$(bld_trg_arch).$(bld_type)
+     *   ...
+     * TOOL_$(tool)_$(type)$(propf2)
+     */
+    if (!pVar && pTool)
+    {
+        psz = pszBuf;
+        ADD_CSTR("TOOL_");
+        ADD_VAR(pTool);
+        ADD_CH('_');
+        psz1 = psz;
+        ADD_VAR(pType);
+        ADD_STR(pszPropF2, cchPropF2);
+        DO_VARIATIONS(1);
+
+        /*
+         * TOOL_$(tool)_$(propf2).$(bld_trg).$(bld_trg_arch).$(bld_type)  [omit $(type) prefix to $(propf2)]
+         *   ...
+         * TOOL_$(tool)_$(propf2)
+         */
+        if (!pVar)
+        {
+            psz = psz1; /* rewind to 'TOOL_$(tool)_' */
+            ADD_STR(pszPropF2, cchPropF2);
+            DO_VARIATIONS(1);
+        }
+    }
+
+    /*
+     * $(type)$(propf1).$(bld_trg).$(bld_trg_arch).$(bld_type)
+     *   ...
+     * $(type)$(propf1)
+     */
+    if (!pVar)
+    {
+        psz = pszBuf;
+        ADD_VAR(pType);
+        ADD_STR(pszPropF1, cchPropF1);
+        DO_VARIATIONS(1);
+
+        /*
+         * $(propf1).$(bld_trg).$(bld_trg_arch).$(bld_type)
+         *   ...
+         * $(propf1)
+         */
+        if (!pVar)
+        {
+            psz = pszBuf;
+            ADD_STR(pszPropF1, cchPropF1);
+            DO_VARIATIONS(1);
+        }
+    }
+
+    /*
+     * Done!
+     */
+    if (pVar)
+    {
+        /* strip it */
+        psz = pVar->value;
+        pszEnd = psz + pVar->value_length;
+        while (ISBLANK(*psz))
+            psz++;
+        while (pszEnd > psz && ISBLANK(pszEnd[-1]))
+            pszEnd--;
+        if (pszEnd > psz)
+        {
+            char chSaved = *pszEnd;
+            *pszEnd = '\0';
+            pVar = define_variable_vl(pszVarName, strlen(pszVarName), psz, pszEnd - psz,
+                                      1 /* duplicate */, o_local, 0 /* !recursive */);
+            *pszEnd = chSaved;
+        }
+        else
+            pVar = NULL;
+    }
+
+    /* Cache the result if needed. */
+    if (fCacheIt)
+    {
+        psz = pszBuf;
+        ADD_VAR(pTarget);
+        ADD_STR("_2_", 3);
+        ADD_VAR(pType);
+        ADD_STR(pszPropF2, cchPropF2);
+        define_variable_vl_global(pszBuf, psz - pszBuf, pVar ? pVar->value : "", pVar ? pVar->value_length : 0,
+                                  1 /* duplicate */, o_file, 0 /* !recursive */, NILF);
+    }
+
+#undef ADD_VAR
+#undef ADD_STR
+#undef ADD_CSTR
+#undef ADD_CH
+    free(pszBuf);
+    return pVar;
+}
+
+
+/*
+ *
+_SOURCE_TOOL = $(strip $(firstword \
+    $($(target)_$(source)_$(type)TOOL.$(bld_trg).$(bld_trg_arch)) \
+    $($(target)_$(source)_$(type)TOOL.$(bld_trg)) \
+    $($(target)_$(source)_$(type)TOOL) \
+    $($(target)_$(source)_TOOL.$(bld_trg).$(bld_trg_arch)) \
+    $($(target)_$(source)_TOOL.$(bld_trg)) \
+    $($(target)_$(source)_TOOL) \
+    $($(source)_$(type)TOOL.$(bld_trg).$(bld_trg_arch)) \
+    $($(source)_$(type)TOOL.$(bld_trg)) \
+    $($(source)_$(type)TOOL) \
+    $($(source)_TOOL.$(bld_trg).$(bld_trg_arch)) \
+    $($(source)_TOOL.$(bld_trg)) \
+    $($(source)_TOOL) \
+    $($(target)_$(type)TOOL.$(bld_trg).$(bld_trg_arch)) \
+    $($(target)_$(type)TOOL.$(bld_trg)) \
+    $($(target)_$(type)TOOL) \
+    $($(target)_TOOL.$(bld_trg).$(bld_trg_arch)) \
+    $($(target)_TOOL.$(bld_trg)) \
+    $($(target)_TOOL) \
+    \ - the rest depends on pBldType, see _TARGET_TOOL and kbuild_first_prop.
+    $($(type)TOOL.$(bld_trg).$(bld_trg_arch)) \
+    $($(type)TOOL.$(bld_trg)) \
+    $($(type)TOOL) \
+    $(TOOL.$(bld_trg).$(bld_trg_arch)) \
+    $(TOOL.$(bld_trg)) \
+    $(TOOL) ))
+*/
+static struct variable *
+kbuild_get_source_tool(struct variable *pTarget, struct variable *pSource, struct variable *pType,
+                       struct variable *pBldTrg, struct variable *pBldTrgArch, struct variable *pBldType,
+                       const char *pszVarName)
+{
+    struct variable *pVar = kbuild_first_prop(pTarget, pSource, NULL, pType, pBldTrg, pBldTrgArch, pBldType,
+                                              "TOOL", sizeof("TOOL") - 1,
+                                              "TOOL", sizeof("TOOL") - 1,
+                                              0 /*fExtendedSource*/, pszVarName);
+    if (!pVar)
+        OSS(fatal, NILF, _("no tool for source `%s' in target `%s'!"), pSource->value, pTarget->value);
+    return pVar;
+}
+
+
+/**
+ * Helper for func_kbuild_source_tool, func_kbuild_source_one, ++.
+ */
+static int kbuild_version_to_int(const char *pszVersion, int fStrict)
+{
+    int iVer = 0;
+    if (pszVersion && pszVersion[0])
+    {
+        switch (pszVersion[0] | (pszVersion[1] << 8))
+        {
+            case '2': iVer = 2; break;
+            case '3': iVer = 3; break;
+            case '4': iVer = 4; break;
+            case '5': iVer = 5; break;
+            case '6': iVer = 6; break;
+            case '7': iVer = 7; break;
+            case '8': iVer = 8; break;
+            case '9': iVer = 9; break;
+            case '0': iVer = 0; break;
+            case '1': iVer = 1; break;
+            default:
+                while (ISBLANK(*pszVersion))
+                    pszVersion++;
+                if (*pszVersion)
+                {
+                    char *pszEnd = NULL;
+                    long lVer;
+                    errno = 0;
+                    lVer = strtol(pszVersion, &pszEnd, 10);
+                    iVer = (int)lVer;
+                    if (fStrict)
+                    {
+                        if (lVer == 0 && errno != 0)
+                            OSN(fatal, NILF, _("invalid version argument '%s': errno=%d"), pszVersion, errno);
+                        else if (iVer != (int)lVer || iVer < 0)
+                            OS(fatal, NILF, _("version argument out of range '%s'"), pszVersion);
+                        else if (pszEnd)
+                        {
+                            while (ISBLANK(*pszEnd))
+                                pszEnd++;
+                            if (*pszEnd)
+                                OS(fatal, NILF, _("version is not numerical '%s'"), pszVersion);
+                        }
+                    }
+                }
+                break;
+        }
+    }
+    return iVer;
+}
+
+
+/**
+ * "kb-src-tool <varname> [ver=0]" - implements _SOURCE_TOOL.
+ *
+ * Since r3415 an extended set of keyword variations is used on the target, tool
+ * and global properties.
+ */
+char *
+func_kbuild_source_tool(char *o, char **argv, const char *pszFuncName)
+{
+    const int        iVer = kbuild_version_to_int(argv[1], 1 /*strict*/);
+    struct variable *pVar = kbuild_get_source_tool(kbuild_get_variable_n(ST("target")),
+                                                   kbuild_get_variable_n(ST("source")),
+                                                   kbuild_get_variable_n(ST("type")),
+                                                   kbuild_get_variable_n(ST("bld_trg")),
+                                                   kbuild_get_variable_n(ST("bld_trg_arch")),
+                                                   kbuild_get_variable_n(ST("bld_type")),
+                                                   argv[0]);
+    if (pVar)
+         o = variable_buffer_output(o, pVar->value, pVar->value_length);
+    (void)pszFuncName; (void)iVer;
+    return o;
+}
+
+
+/**
+ * Similar to _TARGET_TOOL since r3415.
+ */
+static struct variable *
+kbuild_get_object_suffix(struct variable *pTarget, struct variable *pSource,
+                         struct variable *pTool, struct variable *pType,
+                         struct variable *pBldTrg, struct variable *pBldTrgArch, struct variable *pBldType,
+                         const char *pszVarName)
+{
+    struct variable *pVar = kbuild_first_prop(pTarget, pSource, pTool, pType, pBldTrg, pBldTrgArch, pBldType,
+                                              "SUFF_OBJ", sizeof("SUFF_OBJ") - 1,
+                                              "OBJSUFF",  sizeof("OBJSUFF")  - 1,
+                                              0 /*fExtendedSource*/, pszVarName);
+    if (!pVar)
+        OSS(fatal, NILF, _("no OBJSUFF attribute or SUFF_OBJ default for source `%s' in target `%s'!"),
+            pSource->value, pTarget->value);
+    return pVar;
+}
+
+
+/**
+ * "kb-obj-suff <varname> [ver=0]"
+ *
+ * Since r3415 an extended set of keyword variations is used on the target, tool
+ * and global properties.
+ */
+char *
+func_kbuild_object_suffix(char *o, char **argv, const char *pszFuncName)
+{
+    const int        iVer = kbuild_version_to_int(argv[1], 1 /*strict*/);
+    struct variable *pVar = kbuild_get_object_suffix(kbuild_get_variable_n(ST("target")),
+                                                     kbuild_get_variable_n(ST("source")),
+                                                     kbuild_get_variable_n(ST("tool")),
+                                                     kbuild_get_variable_n(ST("type")),
+                                                     kbuild_get_variable_n(ST("bld_trg")),
+                                                     kbuild_get_variable_n(ST("bld_trg_arch")),
+                                                     kbuild_get_variable_n(ST("bld_type")),
+                                                     argv[0]);
+    if (pVar)
+         o = variable_buffer_output(o, pVar->value, pVar->value_length);
+    (void)pszFuncName; (void)iVer;
+    return o;
+
+}
+
+
+/*
+## Figure out where to put object files.
+# @param    $1      source file
+# @param    $2      normalized main target
+# @remark There are two major hacks here:
+#           1. Source files in the output directory are translated into a gen/ subdir.
+#         	2. Catch anyone specifying $(PATH_SUB_CURRENT)/sourcefile.c.
+_OBJECT_BASE = $(PATH_TARGET)/$(2)/$(call no-root-slash,$(call no-drive,$(basename \
+	$(patsubst $(PATH_ROOT)/%,%,$(patsubst $(PATH_SUB_CURRENT)/%,%,$(patsubst $(PATH_TARGET)/$(2)/%,gen/%,$(1)))))))
+*/
+static struct variable *
+kbuild_get_object_base(struct variable *pTarget, struct variable *pSource, const char *pszVarName)
+{
+    struct variable *pPathTarget = kbuild_get_variable_n(ST("PATH_TARGET"));
+    struct variable *pPathRoot   = kbuild_get_variable_n(ST("PATH_ROOT"));
+    struct variable *pPathSubCur = kbuild_get_variable_n(ST("PATH_SUB_CURRENT"));
+    const char *pszSrcPrefix = NULL;
+    size_t      cchSrcPrefix = 0;
+    size_t      cchSrc = 0;
+    const char *pszSrcEnd;
+    char *pszSrc;
+    char *pszResult;
+    char *psz;
+    char *pszDot;
+    size_t cch;
+
+    /*
+     * Strip the source filename of any unnecessary leading path and root specs.
+     */
+    if (    pSource->value_length > pPathTarget->value_length
+        &&  !strncmp(pSource->value, pPathTarget->value, pPathTarget->value_length))
+    {
+        pszSrc = pSource->value + pPathTarget->value_length;
+        pszSrcPrefix = "gen/";
+        cchSrcPrefix = sizeof("gen/") - 1;
+        if (    *pszSrc == '/'
+            &&  !strncmp(pszSrc + 1, pTarget->value, pTarget->value_length)
+            &&   (   pszSrc[pTarget->value_length + 1] == '/'
+                  || pszSrc[pTarget->value_length + 1] == '\0'))
+            pszSrc += 1 + pTarget->value_length;
+    }
+    else if (    pSource->value_length > pPathRoot->value_length
+             &&  !strncmp(pSource->value, pPathRoot->value, pPathRoot->value_length))
+    {
+        pszSrc = pSource->value + pPathRoot->value_length;
+        if (    *pszSrc == '/'
+            &&  !strncmp(pszSrc + 1, pPathSubCur->value, pPathSubCur->value_length)
+            &&   (   pszSrc[pPathSubCur->value_length + 1] == '/'
+                  || pszSrc[pPathSubCur->value_length + 1] == '\0'))
+            pszSrc += 1 + pPathSubCur->value_length;
+    }
+    else
+        pszSrc = pSource->value;
+
+    /* skip root specification */
+#ifdef HAVE_DOS_PATHS
+    if (isalpha(pszSrc[0]) && pszSrc[1] == ':')
+        pszSrc += 2;
+#endif
+    while (*pszSrc == '/'
+#ifdef HAVE_DOS_PATHS
+           || *pszSrc == '\\'
+#endif
+           )
+        pszSrc++;
+
+    /* drop the source extension. */
+    pszSrcEnd = pSource->value + pSource->value_length;
+    for (;;)
+    {
+        pszSrcEnd--;
+        if (    pszSrcEnd <= pszSrc
+            ||  *pszSrcEnd == '/'
+#ifdef HAVE_DOS_PATHS
+            ||  *pszSrcEnd == '\\'
+            ||  *pszSrcEnd == ':'
+#endif
+           )
+        {
+            pszSrcEnd = pSource->value + pSource->value_length;
+            break;
+        }
+        if (*pszSrcEnd == '.')
+            break;
+    }
+
+    /*
+     * Assemble the string on the heap and define the objbase variable
+     * which we then return.
+     */
+    cchSrc = pszSrcEnd - pszSrc;
+    cch = pPathTarget->value_length
+        + 1 /* slash */
+        + pTarget->value_length
+        + 1 /* slash */
+        + cchSrcPrefix
+        + cchSrc
+        + 1;
+    psz = pszResult = xmalloc(cch);
+
+    memcpy(psz, pPathTarget->value, pPathTarget->value_length); psz += pPathTarget->value_length;
+    *psz++ = '/';
+    memcpy(psz, pTarget->value, pTarget->value_length); psz += pTarget->value_length;
+    *psz++ = '/';
+    if (pszSrcPrefix)
+    {
+        memcpy(psz, pszSrcPrefix, cchSrcPrefix);
+        psz += cchSrcPrefix;
+    }
+    pszDot = psz;
+    memcpy(psz, pszSrc, cchSrc); psz += cchSrc;
+    *psz = '\0';
+
+    /* convert '..' path elements in the source to 'dt'. */
+    while ((pszDot = memchr(pszDot, '.', psz - pszDot)) != NULL)
+    {
+        if (    pszDot[1] == '.'
+            &&  (   pszDot == psz
+                 || pszDot[-1] == '/'
+#ifdef HAVE_DOS_PATHS
+                 || pszDot[-1] == '\\'
+                 || pszDot[-1] == ':'
+#endif
+                )
+            &&  (   !pszDot[2]
+                 || pszDot[2] == '/'
+#ifdef HAVE_DOS_PATHS
+                 || pszDot[2] == '\\'
+                 || pszDot[2] == ':'
+#endif
+                )
+            )
+        {
+            *pszDot++ = 'd';
+            *pszDot++ = 't';
+        }
+        else
+            pszDot++;
+    }
+
+    /*
+     * Define the variable in the current set and return it.
+     */
+    return define_variable_vl(pszVarName, strlen(pszVarName), pszResult, cch - 1,
+                              0 /* use pszResult */, o_local, 0 /* !recursive */);
+}
+
+
+/**
+ * "kb-obj-base <var> [ver]" Implements _OBJECT_BASE.
+ */
+char *
+func_kbuild_object_base(char *o, char **argv, const char *pszFuncName)
+{
+    const int        iVer = kbuild_version_to_int(argv[1], 1 /*strict*/);
+    struct variable *pVar = kbuild_get_object_base(kbuild_lookup_variable("target"),
+                                                   kbuild_lookup_variable("source"),
+                                                   argv[0]);
+    if (pVar)
+         o = variable_buffer_output(o, pVar->value, pVar->value_length);
+    (void)pszFuncName; (void)iVer;
+    return o;
+}
+
+
+struct kbuild_sdks
+{
+    char *apsz[4];
+    struct variable *pa;
+    unsigned c;
+    unsigned iGlobal;
+    unsigned cGlobal;
+    unsigned iTarget;
+    unsigned cTarget;
+    unsigned iSource;
+    unsigned cSource;
+    unsigned iTargetSource;
+    unsigned cTargetSource;
+    unsigned int cchMax;
+};
+
+
+/* Fills in the SDK struct (remember to free it). */
+static void
+kbuild_get_sdks(struct kbuild_sdks *pSdks, struct variable *pTarget, struct variable *pSource,
+                struct variable *pBldType, struct variable *pBldTrg, struct variable *pBldTrgArch)
+{
+    unsigned i;
+    unsigned j;
+    size_t cchTmp, cch;
+    char *pszTmp;
+    unsigned cchCur;
+    char *pszCur;
+    const char *pszIterator;
+
+    /** @todo rewrite this to avoid sprintf and allocated_varaible_expand_2. */
+
+    /* basic init. */
+    pSdks->cchMax = 0;
+    pSdks->pa = NULL;
+    pSdks->c = 0;
+    i = 0;
+
+    /* determin required tmp variable name space. */
+    cchTmp = sizeof("$(__SDKS) $(__SDKS.) $(__SDKS.) $(__SDKS.) $(__SDKS..)")
+           + (pTarget->value_length + pSource->value_length) * 5
+           + pBldType->value_length
+           + pBldTrg->value_length
+           + pBldTrgArch->value_length
+           + pBldTrg->value_length + pBldTrgArch->value_length;
+    pszTmp = alloca(cchTmp);
+
+    /* the global sdks. */
+    pSdks->iGlobal = i;
+    pSdks->cGlobal = 0;
+    cch = sprintf(pszTmp, "$(SDKS) $(SDKS.%s) $(SDKS.%s) $(SDKS.%s) $(SDKS.%s.%s)",
+                  pBldType->value,
+                  pBldTrg->value,
+                  pBldTrgArch->value,
+                  pBldTrg->value, pBldTrgArch->value);
+    pszIterator = pSdks->apsz[0] = allocated_variable_expand_2(pszTmp, cch, NULL);
+    while ((pszCur = find_next_token(&pszIterator, &cchCur)) != 0)
+        pSdks->cGlobal++;
+    i += pSdks->cGlobal;
+
+    /* the target sdks.*/
+    pSdks->iTarget = i;
+    pSdks->cTarget = 0;
+    cch = sprintf(pszTmp, "$(%s_SDKS) $(%s_SDKS.%s) $(%s_SDKS.%s) $(%s_SDKS.%s) $(%s_SDKS.%s.%s)",
+                  pTarget->value,
+                  pTarget->value, pBldType->value,
+                  pTarget->value, pBldTrg->value,
+                  pTarget->value, pBldTrgArch->value,
+                  pTarget->value, pBldTrg->value, pBldTrgArch->value);
+    pszIterator = pSdks->apsz[1] = allocated_variable_expand_2(pszTmp, cch, NULL);
+    while ((pszCur = find_next_token(&pszIterator, &cchCur)) != 0)
+        pSdks->cTarget++;
+    i += pSdks->cTarget;
+
+    /* the source sdks.*/
+    pSdks->iSource = i;
+    pSdks->cSource = 0;
+    cch = sprintf(pszTmp, "$(%s_SDKS) $(%s_SDKS.%s) $(%s_SDKS.%s) $(%s_SDKS.%s) $(%s_SDKS.%s.%s)",
+                  pSource->value,
+                  pSource->value, pBldType->value,
+                  pSource->value, pBldTrg->value,
+                  pSource->value, pBldTrgArch->value,
+                  pSource->value, pBldTrg->value, pBldTrgArch->value);
+    pszIterator = pSdks->apsz[2] = allocated_variable_expand_2(pszTmp, cch, NULL);
+    while ((pszCur = find_next_token(&pszIterator, &cchCur)) != 0)
+        pSdks->cSource++;
+    i += pSdks->cSource;
+
+    /* the target + source sdks. */
+    pSdks->iTargetSource = i;
+    pSdks->cTargetSource = 0;
+    cch = sprintf(pszTmp, "$(%s_%s_SDKS) $(%s_%s_SDKS.%s) $(%s_%s_SDKS.%s) $(%s_%s_SDKS.%s) $(%s_%s_SDKS.%s.%s)",
+                  pTarget->value, pSource->value,
+                  pTarget->value, pSource->value, pBldType->value,
+                  pTarget->value, pSource->value, pBldTrg->value,
+                  pTarget->value, pSource->value, pBldTrgArch->value,
+                  pTarget->value, pSource->value, pBldTrg->value, pBldTrgArch->value);
+    assert(cch < cchTmp); (void)cch;
+    pszIterator = pSdks->apsz[3] = allocated_variable_expand_2(pszTmp, cch, NULL);
+    while ((pszCur = find_next_token(&pszIterator, &cchCur)) != 0)
+        pSdks->cTargetSource++;
+    i += pSdks->cTargetSource;
+
+    pSdks->c = i;
+    if (!i)
+        return;
+
+    /*
+     * Allocate the variable array and create the variables.
+     */
+    pSdks->pa = (struct variable *)xmalloc(sizeof(pSdks->pa[0]) * i);
+    memset(pSdks->pa, 0, sizeof(pSdks->pa[0]) * i);
+    for (i = j = 0; j < sizeof(pSdks->apsz) / sizeof(pSdks->apsz[0]); j++)
+    {
+        pszIterator = pSdks->apsz[j];
+        while ((pszCur = find_next_token(&pszIterator, &cchCur)) != 0)
+        {
+            pSdks->pa[i].value = pszCur;
+            pSdks->pa[i].value_length = cchCur;
+            i++;
+        }
+    }
+    assert(i == pSdks->c);
+
+    /* terminate them (find_next_token won't work if we terminate them in the previous loop). */
+    while (i-- > 0)
+    {
+        pSdks->pa[i].value[pSdks->pa[i].value_length] = '\0';
+
+        /* calc the max variable length too. */
+        if (pSdks->cchMax < (unsigned int)pSdks->pa[i].value_length)
+            pSdks->cchMax = pSdks->pa[i].value_length;
+    }
+}
+
+
+/* releases resources allocated in the kbuild_get_sdks. */
+static void
+kbuild_put_sdks(struct kbuild_sdks *pSdks)
+{
+    unsigned j;
+    for (j = 0; j < sizeof(pSdks->apsz) / sizeof(pSdks->apsz[0]); j++)
+        free(pSdks->apsz[j]);
+    free(pSdks->pa);
+}
+
+/** Per variable struct used by kbuild_collect_source_prop and helpers. */
+struct kbuild_collect_variable
+{
+    struct variable    *pVar;
+    unsigned int        cchExp;
+    char               *pszExp;
+};
+
+/**
+ * Helper for kbuild_collect_source_prop. 
+ *  
+ * Frees up any memory we've allocated for the variable values. 
+ */
+static struct variable *
+kbuild_collect_source_prop_create_var(size_t cchTotal, int cVars, struct kbuild_collect_variable *paVars, int iDirection,
+                                      const char *pszVarName, size_t cchVarName, enum variable_origin enmVarOrigin)
+{
+    char *pszResult;
+    struct variable *pVar;
+    if (!cVars || !cchTotal)
+    {
+        pszResult = xmalloc(1);
+        *pszResult = '\0';
+    }
+    else
+    {
+        int iVar;
+        char *psz = pszResult = xmalloc(cchTotal + 1);
+        if (iDirection == 1)
+        {
+            for (iVar = 0; iVar < cVars; iVar++)
+            {
+                my_memcpy(psz, paVars[iVar].pszExp, paVars[iVar].cchExp);
+                psz += paVars[iVar].cchExp;
+                *psz++ = ' ';
+                if (paVars[iVar].pszExp != paVars[iVar].pVar->value)
+                    free(paVars[iVar].pszExp);
+            }
+        }
+        else
+        {
+            iVar = cVars;
+            while (iVar-- > 0)
+            {
+                my_memcpy(psz, paVars[iVar].pszExp, paVars[iVar].cchExp);
+                psz += paVars[iVar].cchExp;
+                *psz++ = ' ';
+                if (paVars[iVar].pszExp != paVars[iVar].pVar->value)
+                    free(paVars[iVar].pszExp);
+            }
+
+        }
+        assert(psz != pszResult);
+        assert(cchTotal == (size_t)(psz - pszResult));
+        psz[-1] = '\0';
+        cchTotal--;
+
+    }
+    if (enmVarOrigin == o_local)
+        pVar = define_variable_vl(pszVarName, cchVarName, pszResult, cchTotal,
+                                  0 /* take pszResult */ , enmVarOrigin, 0 /* !recursive */);
+    else
+        pVar = define_variable_vl_global(pszVarName, cchVarName, pszResult, cchTotal,
+                                         0 /* take pszResult */ , enmVarOrigin, 0 /* !recursive */, NILF);
+    return pVar;
+}
+
+/* this kind of stuff:
+
+defs        := $(kb-src-exp defs)
+	$(TOOL_$(tool)_DEFS)\
+	$(TOOL_$(tool)_DEFS.$(bld_type))\
+	$(TOOL_$(tool)_DEFS.$(bld_trg))\
+	$(TOOL_$(tool)_DEFS.$(bld_trg_arch))\
+	$(TOOL_$(tool)_DEFS.$(bld_trg).$(bld_trg_arch))\
+	$(TOOL_$(tool)_DEFS.$(bld_trg_cpu))\
+	$(TOOL_$(tool)_$(type)DEFS)\
+	$(TOOL_$(tool)_$(type)DEFS.$(bld_type))\
+	$(foreach sdk, $(SDKS.$(bld_trg)) \
+				   $(SDKS.$(bld_trg).$(bld_trg_arch)) \
+				   $(SDKS.$(bld_type)) \
+				   $(SDKS),\
+		$(SDK_$(sdk)_DEFS)\
+		$(SDK_$(sdk)_DEFS.$(bld_type))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg_arch))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg).$(bld_trg_arch))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg_cpu))\
+		$(SDK_$(sdk)_$(type)DEFS)\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_type))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_arch))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_cpu)))\
+	$(DEFS)\
+	$(DEFS.$(bld_type))\
+	$(DEFS.$(bld_trg))\
+	$(DEFS.$(bld_trg_arch))\
+	$(DEFS.$(bld_trg).$(bld_trg_arch))\
+	$(DEFS.$(bld_trg_cpu))\
+	$($(type)DEFS)\
+	$($(type)DEFS.$(bld_type))\
+	$($(type)DEFS.$(bld_trg))\
+	$($(type)DEFS.$(bld_trg_arch))\
+	$($(type)DEFS.$(bld_trg).$(bld_trg_arch))\
+	$($(type)DEFS.$(bld_trg_cpu))\
+	$(foreach sdk, $($(target)_SDKS.$(bld_trg)) \
+				   $($(target)_SDKS.$(bld_trg).$(bld_trg_arch)) \
+				   $($(target)_SDKS.$(bld_type)) \
+				   $($(target)_SDKS),\
+		$(SDK_$(sdk)_DEFS)\
+		$(SDK_$(sdk)_DEFS.$(bld_type))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg_arch))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg).$(bld_trg_arch))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg_cpu))\
+		$(SDK_$(sdk)_$(type)DEFS)\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_type))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_arch))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_cpu)))\
+	$($(target)_DEFS)\
+	$($(target)_DEFS.$(bld_type))\
+	$($(target)_DEFS.$(bld_trg))\
+	$($(target)_DEFS.$(bld_trg_arch))\
+	$($(target)_DEFS.$(bld_trg).$(bld_trg_arch))\
+	$($(target)_DEFS.$(bld_trg_cpu))\
+	$($(target)_$(type)DEFS)\
+	$($(target)_$(type)DEFS.$(bld_type))\
+	$($(target)_$(type)DEFS.$(bld_trg))\
+	$($(target)_$(type)DEFS.$(bld_trg_arch))\
+	$($(target)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
+	$($(target)_$(type)DEFS.$(bld_trg_cpu))\
+	$(foreach sdk, $($(source)_SDKS.$(bld_trg)) \
+				   $($(source)_SDKS.$(bld_trg).$(bld_trg_arch)) \
+				   $($(source)_SDKS.$(bld_type)) \
+				   $($(source)_SDKS),\
+		$(SDK_$(sdk)_DEFS)\
+		$(SDK_$(sdk)_DEFS.$(bld_type))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg_arch))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg).$(bld_trg_arch))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg_cpu))\
+		$(SDK_$(sdk)_$(type)DEFS)\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_type))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_arch))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_cpu)))\
+	$($(source)_DEFS)\
+	$($(source)_DEFS.$(bld_type))\
+	$($(source)_DEFS.$(bld_trg))\
+	$($(source)_DEFS.$(bld_trg_arch))\
+	$($(source)_DEFS.$(bld_trg).$(bld_trg_arch))\
+	$($(source)_DEFS.$(bld_trg_cpu))\
+	$($(source)_$(type)DEFS)\
+	$($(source)_$(type)DEFS.$(bld_type))\
+	$($(source)_$(type)DEFS.$(bld_trg))\
+	$($(source)_$(type)DEFS.$(bld_trg_arch))\
+	$($(source)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
+	$($(source)_$(type)DEFS.$(bld_trg_cpu))\
+	$(foreach sdk, $($(target)_$(source)_SDKS.$(bld_trg)) \
+				   $($(target)_$(source)_SDKS.$(bld_trg).$(bld_trg_arch)) \
+				   $($(target)_$(source)_SDKS.$(bld_type)) \
+				   $($(target)_$(source)_SDKS),\
+		$(SDK_$(sdk)_DEFS)\
+		$(SDK_$(sdk)_DEFS.$(bld_type))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg_arch))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg).$(bld_trg_arch))\
+		$(SDK_$(sdk)_DEFS.$(bld_trg_cpu))\
+		$(SDK_$(sdk)_$(type)DEFS)\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_type))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_arch))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
+		$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_cpu)))\
+	$($(target)_$(source)_DEFS)\
+	$($(target)_$(source)_DEFS.$(bld_type))\
+	$($(target)_$(source)_DEFS.$(bld_trg))\
+	$($(target)_$(source)_DEFS.$(bld_trg_arch))\
+	$($(target)_$(source)_DEFS.$(bld_trg).$(bld_trg_arch))\
+	$($(target)_$(source)_DEFS.$(bld_trg_cpu))\
+	$($(target)_$(source)_$(type)DEFS)\
+	$($(target)_$(source)_$(type)DEFS.$(bld_type))\
+	$($(target)_$(source)_$(type)DEFS.$(bld_trg))\
+	$($(target)_$(source)_$(type)DEFS.$(bld_trg_arch))\
+	$($(target)_$(source)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
+	$($(target)_$(source)_$(type)DEFS.$(bld_trg_cpu))
+*/
+static struct variable *
+kbuild_collect_source_prop(struct variable *pTarget, struct variable *pSource,
+                           struct variable *pTool, struct kbuild_sdks *pSdks,
+                           struct variable *pType, struct variable *pBldType,
+                           struct variable *pBldTrg, struct variable *pBldTrgArch, struct variable *pBldTrgCpu,
+                           struct variable *pDefPath,
+                           const char *pszProp, size_t cchProp,
+                           const char *pszVarName, size_t cchVarName,
+                           int iDirection)
+{
+    struct variable *pVar;
+    unsigned iSdk, iSdkEnd;
+    int cVars, iVar;
+    size_t cchTotal, cchBuf;
+    char *pszBuf, *psz, *psz2, *psz3;
+    struct kbuild_collect_variable *paVars;
+
+    assert(iDirection == 1 || iDirection == -1);
+
+    /*
+     * Calc and allocate a too big name buffer.
+     */
+    cchBuf = cchProp + 1
+           + pTarget->value_length + 1
+           + pSource->value_length + 1
+           + pSdks->cchMax + 1
+           + (pTool ? pTool->value_length + 1 : 0)
+           + pType->value_length + 1
+           + pBldTrg->value_length + 1
+           + pBldTrgArch->value_length + 1
+           + pBldTrgCpu->value_length + 1
+           + pBldType->value_length + 1
+           + sizeof("_2_");
+    pszBuf = xmalloc(cchBuf);
+
+    /*
+     * Get the variables.
+     *
+     * The compiler will get a heart attack when it sees this code ... ;-)
+     */
+    cVars = 12 * (pSdks->c + 5);
+    paVars = (struct kbuild_collect_variable *)alloca(cVars * sizeof(paVars[0]));
+
+    iVar = 0;
+    cchTotal = 0;
+
+#define ADD_VAR(pVar)           do { my_memcpy(psz, (pVar)->value, (pVar)->value_length); psz += (pVar)->value_length; } while (0)
+#define ADD_STR(pszStr, cchStr) do { my_memcpy(psz, (pszStr), (cchStr)); psz += (cchStr); } while (0)
+#define ADD_CSTR(pszStr)        do { my_memcpy(psz, pszStr, sizeof(pszStr) - 1); psz += sizeof(pszStr) - 1; } while (0)
+#define ADD_CH(ch)              do { *psz++ = (ch); } while (0)
+#define DO_VAR_LOOKUP() \
+    do { \
+        pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf); \
+        if (pVar) \
+        { \
+            paVars[iVar].pVar = pVar; \
+            if (   !pVar->recursive \
+                || IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR(pVar)) \
+            { \
+                paVars[iVar].pszExp = pVar->value; \
+                paVars[iVar].cchExp = pVar->value_length; \
+                if (pDefPath && paVars[iVar].cchExp) \
+                    kbuild_apply_defpath(pDefPath, &paVars[iVar].pszExp, &paVars[iVar].cchExp, NULL, 0); \
+                if (paVars[iVar].cchExp) \
+                { \
+                    cchTotal += paVars[iVar].cchExp + 1; \
+                    iVar++; \
+                } \
+            } \
+            else \
+            { \
+                paVars[iVar].pszExp = allocated_variable_expand_2(pVar->value, pVar->value_length, &paVars[iVar].cchExp); \
+                if (pDefPath && paVars[iVar].cchExp) \
+                    kbuild_apply_defpath(pDefPath, &paVars[iVar].pszExp, &paVars[iVar].cchExp, NULL, 1); \
+                if (paVars[iVar].cchExp) \
+                { \
+                    cchTotal += paVars[iVar].cchExp + 1; \
+                    iVar++; \
+                } \
+                else \
+                    free(paVars[iVar].pszExp); \
+            } \
+        } \
+    } while (0)
+#define DO_SINGLE_PSZ3_VARIATION() \
+    do {                           \
+       DO_VAR_LOOKUP();            \
+                                   \
+       ADD_CH('.');                \
+       psz3 = psz;                 \
+       ADD_VAR(pBldType);          \
+       DO_VAR_LOOKUP();            \
+                                   \
+       psz = psz3;                 \
+       ADD_VAR(pBldTrg);           \
+       DO_VAR_LOOKUP();            \
+                                   \
+       psz = psz3;                 \
+       ADD_VAR(pBldTrgArch);       \
+       DO_VAR_LOOKUP();            \
+                                   \
+       psz = psz3;                 \
+       ADD_VAR(pBldTrg);           \
+       ADD_CH('.');                \
+       ADD_VAR(pBldTrgArch);       \
+       DO_VAR_LOOKUP();            \
+                                   \
+       psz = psz3;                 \
+       ADD_VAR(pBldTrgCpu);        \
+       DO_VAR_LOOKUP();            \
+    } while (0)
+
+#define DO_DOUBLE_PSZ2_VARIATION() \
+    do {                           \
+       psz2 = psz;                 \
+       ADD_STR(pszProp, cchProp);  \
+       DO_SINGLE_PSZ3_VARIATION(); \
+                                   \
+       /* add prop before type */  \
+       psz = psz2;                 \
+       ADD_VAR(pType);             \
+       ADD_STR(pszProp, cchProp);  \
+       DO_SINGLE_PSZ3_VARIATION(); \
+    } while (0)
+
+    /*
+     * The first bunch part may be cached on the target already, check that first:
+     */
+    psz = pszBuf;
+    ADD_VAR(pTarget);
+    ADD_CSTR("_2_");
+    ADD_VAR(pType);
+    ADD_STR(pszProp, cchProp);
+    ADD_CH('_');
+    ADD_VAR(pBldType);
+    *psz = '\0';
+    pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf);
+    if (pVar)
+        assert(iVar == 0);
+    else
+    {
+        /* the tool (lowest priority). */
+        psz = pszBuf;
+        ADD_CSTR("TOOL_");
+        ADD_VAR(pTool);
+        ADD_CH('_');
+        DO_DOUBLE_PSZ2_VARIATION();
+
+        /* the global sdks. */
+        iSdkEnd = iDirection == 1 ? pSdks->iGlobal + pSdks->cGlobal : pSdks->iGlobal - 1;
+        for (iSdk = iDirection == 1 ? pSdks->iGlobal : pSdks->iGlobal + pSdks->cGlobal - 1;
+             iSdk != iSdkEnd;
+             iSdk += iDirection)
+        {
+            struct variable *pSdk = &pSdks->pa[iSdk];
+            psz = pszBuf;
+            ADD_CSTR("SDK_");
+            ADD_VAR(pSdk);
+            ADD_CH('_');
+            DO_DOUBLE_PSZ2_VARIATION();
+        }
+
+        /* the globals. */
+        psz = pszBuf;
+        DO_DOUBLE_PSZ2_VARIATION();
+
+        /* the target sdks. */
+        iSdkEnd = iDirection == 1 ? pSdks->iTarget + pSdks->cTarget : pSdks->iTarget - 1;
+        for (iSdk = iDirection == 1 ? pSdks->iTarget : pSdks->iTarget + pSdks->cTarget - 1;
+             iSdk != iSdkEnd;
+             iSdk += iDirection)
+        {
+            struct variable *pSdk = &pSdks->pa[iSdk];
+            psz = pszBuf;
+            ADD_CSTR("SDK_");
+            ADD_VAR(pSdk);
+            ADD_CH('_');
+            DO_DOUBLE_PSZ2_VARIATION();
+        }
+
+        /* the target. */
+        psz = pszBuf;
+        ADD_VAR(pTarget);
+        ADD_CH('_');
+        DO_DOUBLE_PSZ2_VARIATION();
+
+        /*
+         * Cache the result thus far (frees up anything we might've allocated above).
+         */
+        psz = pszBuf;
+        ADD_VAR(pTarget);
+        ADD_CSTR("_2_");
+        ADD_VAR(pType);
+        ADD_STR(pszProp, cchProp);
+        ADD_CH('_');
+        ADD_VAR(pBldType);
+        *psz = '\0';
+        assert(iVar <= cVars);
+        pVar = kbuild_collect_source_prop_create_var(cchTotal, iVar, paVars, iDirection, pszBuf, psz - pszBuf, o_file);
+        assert(pVar);
+    }
+
+    /* Now we use the cached target variable. */
+    paVars[0].pVar   = pVar;
+    paVars[0].pszExp = pVar->value;
+    paVars[0].cchExp = pVar->value_length;
+    cchTotal         = paVars[0].cchExp + 1;
+    iVar = 1;
+
+    /* the source sdks. */
+    iSdkEnd = iDirection == 1 ? pSdks->iSource + pSdks->cSource : pSdks->iSource - 1;
+    for (iSdk = iDirection == 1 ? pSdks->iSource : pSdks->iSource + pSdks->cSource - 1;
+         iSdk != iSdkEnd;
+         iSdk += iDirection)
+    {
+        struct variable *pSdk = &pSdks->pa[iSdk];
+        psz = pszBuf;
+        ADD_CSTR("SDK_");
+        ADD_VAR(pSdk);
+        ADD_CH('_');
+        DO_DOUBLE_PSZ2_VARIATION();
+    }
+
+    /* the source. */
+    psz = pszBuf;
+    ADD_VAR(pSource);
+    ADD_CH('_');
+    DO_DOUBLE_PSZ2_VARIATION();
+
+    /* the target + source sdks. */
+    iSdkEnd = iDirection == 1 ? pSdks->iTargetSource + pSdks->cTargetSource : pSdks->iTargetSource - 1;
+    for (iSdk = iDirection == 1 ? pSdks->iTargetSource : pSdks->iTargetSource + pSdks->cTargetSource - 1;
+         iSdk != iSdkEnd;
+         iSdk += iDirection)
+    {
+        struct variable *pSdk = &pSdks->pa[iSdk];
+        psz = pszBuf;
+        ADD_CSTR("SDK_");
+        ADD_VAR(pSdk);
+        ADD_CH('_');
+        DO_DOUBLE_PSZ2_VARIATION();
+    }
+
+    /* the target + source. */
+    psz = pszBuf;
+    ADD_VAR(pTarget);
+    ADD_CH('_');
+    ADD_VAR(pSource);
+    ADD_CH('_');
+    DO_DOUBLE_PSZ2_VARIATION();
+
+    free(pszBuf);
+
+    /*
+     * Construct the result value (frees up anything we might've allocated above).
+     */
+    assert(iVar <= cVars);
+    return kbuild_collect_source_prop_create_var(cchTotal, iVar, paVars, iDirection, pszVarName, cchVarName, o_local);
+
+#undef ADD_VAR
+#undef ADD_STR
+#undef ADD_CSTR
+#undef ADD_CH
+#undef DO_VAR_LOOKUP
+#undef DO_DOUBLE_PSZ2_VARIATION
+#undef DO_SINGLE_PSZ3_VARIATION
+}
+
+
+/* "kb-src-prop <prop> <var> <dir> [defpath] [ver]"
+   get a source property. */
+char *
+func_kbuild_source_prop(char *o, char **argv, const char *pszFuncName)
+{
+    struct variable *pTarget = kbuild_get_variable_n(ST("target"));
+    struct variable *pSource = kbuild_get_variable_n(ST("source"));
+    struct variable *pDefPath = NULL;
+    struct variable *pType = kbuild_get_variable_n(ST("type"));
+    struct variable *pTool = kbuild_get_variable_n(ST("tool"));
+    struct variable *pBldType = kbuild_get_variable_n(ST("bld_type"));
+    struct variable *pBldTrg = kbuild_get_variable_n(ST("bld_trg"));
+    struct variable *pBldTrgArch = kbuild_get_variable_n(ST("bld_trg_arch"));
+    struct variable *pBldTrgCpu = kbuild_get_variable_n(ST("bld_trg_cpu"));
+    struct variable *pVar;
+    struct kbuild_sdks Sdks;
+    int iVer = 0;
+    int iDirection;
+    if (!strcmp(argv[2], "left-to-right"))
+        iDirection = 1;
+    else if (!strcmp(argv[2], "right-to-left"))
+        iDirection = -1;
+    else
+        OS(fatal, NILF, _("incorrect direction argument `%s'!"), argv[2]);
+    if (argv[3])
+    {
+        const char *psz = argv[3];
+        while (ISSPACE(*psz))
+            psz++;
+        if (*psz)
+            pDefPath = kbuild_get_variable_n(ST("defpath"));
+        if (argv[4])
+            iVer = kbuild_version_to_int(argv[4], 1 /*strict*/);
+    }
+
+    kbuild_get_sdks(&Sdks, pTarget, pSource, pBldType, pBldTrg, pBldTrgArch);
+
+    pVar = kbuild_collect_source_prop(pTarget, pSource, pTool, &Sdks, pType,
+                                      pBldType, pBldTrg, pBldTrgArch, pBldTrgCpu,
+                                      pDefPath,
+                                      argv[0], strlen(argv[0]),
+                                      argv[1], strlen(argv[1]),
+                                      iDirection);
+    if (pVar)
+         o = variable_buffer_output(o, pVar->value, pVar->value_length);
+
+    kbuild_put_sdks(&Sdks);
+    (void)pszFuncName; (void)iVer;
+    return o;
+}
+
+
+/*
+dep     := $(obj)$(SUFF_DEP)
+obj     := $(outbase)$(objsuff)
+dirdep  := $(call DIRDEP,$(dir $(outbase)))
+PATH_$(target)_$(source) := $(patsubst %/,%,$(dir $(outbase)))
+*/
+static struct variable *
+kbuild_set_object_name_and_dep_and_dirdep_and_PATH_target_source(struct variable *pTarget, struct variable *pSource,
+                                                                 struct variable *pOutBase, struct variable *pObjSuff,
+                                                                 const char *pszVarName, struct variable **ppDep,
+                                                                 struct variable **ppDirDep)
+{
+    struct variable *pDepSuff = kbuild_get_variable_n(ST("SUFF_DEP"));
+    struct variable *pObj;
+    size_t cch = pOutBase->value_length + pObjSuff->value_length + pDepSuff->value_length + 1;
+    char *pszResult = alloca(cch);
+    char *pszName, *psz;
+
+    /*
+     * dep.
+     */
+    psz = pszResult;
+    memcpy(psz, pOutBase->value, pOutBase->value_length);   psz += pOutBase->value_length;
+    memcpy(psz, pObjSuff->value, pObjSuff->value_length);   psz += pObjSuff->value_length;
+    memcpy(psz, pDepSuff->value, pDepSuff->value_length + 1);
+    *ppDep = define_variable_vl("dep", 3, pszResult, cch - 1, 1 /*dup*/, o_local, 0 /* !recursive */);
+
+    /*
+     * obj
+     */
+    *psz = '\0';
+    pObj = define_variable_vl(pszVarName, strlen(pszVarName), pszResult, psz - pszResult,
+                              1/* dup */, o_local, 0 /* !recursive */);
+
+    /*
+     * PATH_$(target)_$(source) - this is global!
+     */
+    /* calc variable name. */
+    cch = sizeof("PATH_")-1 + pTarget->value_length + sizeof("_")-1 + pSource->value_length;
+    psz = pszName = alloca(cch + 1);
+    memcpy(psz, "PATH_", sizeof("PATH_") - 1);          psz += sizeof("PATH_") - 1;
+    memcpy(psz, pTarget->value, pTarget->value_length); psz += pTarget->value_length;
+    *psz++ = '_';
+    memcpy(psz, pSource->value, pSource->value_length + 1);
+
+    /* strip off the filename. */
+    psz = pszResult + pOutBase->value_length;
+    for (;;)
+    {
+        psz--;
+        if (psz <= pszResult)
+            OS(fatal, NULL, "whut!?! no path? result=`%s'", pszResult);
+#ifdef HAVE_DOS_PATHS
+        if (*psz == ':')
+        {
+            psz++;
+            break;
+        }
+#endif
+        if (    *psz == '/'
+#ifdef HAVE_DOS_PATHS
+            ||  *psz == '\\'
+#endif
+           )
+        {
+            while (     psz - 1 > pszResult
+                   &&   psz[-1] == '/'
+#ifdef HAVE_DOS_PATHS
+                   ||   psz[-1] == '\\'
+#endif
+                  )
+                psz--;
+#ifdef HAVE_DOS_PATHS
+            if (psz == pszResult + 2 && pszResult[1] == ':')
+                psz++;
+#endif
+            break;
+        }
+    }
+    *psz = '\0';
+
+    /* set global variable */
+    define_variable_vl_global(pszName, cch, pszResult, psz - pszResult, 1/*dup*/, o_file, 0 /* !recursive */, NILF);
+
+    /*
+     * dirdep
+     */
+    if (    psz[-1] != '/'
+#ifdef HAVE_DOS_PATHS
+        &&  psz[-1] != '\\'
+        &&  psz[-1] != ':'
+#endif
+       )
+    {
+        *psz++ = '/';
+        *psz = '\0';
+    }
+    *ppDirDep = define_variable_vl("dirdep", 6, pszResult, psz - pszResult, 1/*dup*/, o_local, 0 /* !recursive */);
+
+    return pObj;
+}
+
+
+/**
+ *
+ *
+ * Setup the base variables for def_target_source_c_cpp_asm_new:
+ * @code
+
+X := $(kb-src-tool tool)
+x := $(kb-obj-base outbase)
+x := $(kb-obj-suff objsuff)
+obj     := $(outbase)$(objsuff)
+PATH_$(target)_$(source) := $(patsubst %/,%,$(dir $(outbase)))
+
+x := $(kb-src-prop DEFS,defs,left-to-right)
+x := $(kb-src-prop INCS,incs,right-to-left)
+x := $(kb-src-prop FLAGS,flags,right-to-left)
+
+x := $(kb-src-prop DEPS,deps,left-to-right)
+dirdep  := $(call DIRDEP,$(dir $(outbase)))
+dep     := $(obj)$(SUFF_DEP)
+ * @endcode
+ *
+ * argv[0] is the function version. Prior to r1792 (early 0.1.5) this
+ * was undefined and footer.kmk always passed an empty string.
+ *
+ * Version 2, as implemented in r1797, will make use of the async
+ * includedep queue feature. This means the files will be read by one or
+ * more background threads, leaving the eval'ing to be done later on by
+ * the main thread (in snap_deps).
+ *
+ * Version 3, as implemented in rXXXX, will check
+ * TOOL_$(tool)_COMPILE_$(type)_USES_KOBJCACHE and use
+ * def_target_source_rule_v3plus_objcache if it's non-empty or
+ * def_target_source_rule_v3plus if it's empty (version 2 and older will use
+ * def_target_source_rule).  Version 3 will also skip defining several
+ * properties that it considers legacy (todo: which).
+ *
+ * Version 4, as implemented in r3415, will use the extended tool resolution at
+ * the target level (not source) as implemented by the _TARGET_TOOL update in
+ * r2433.
+ *
+ * With r3415 the $(target)_2_$(type)TOOL will be used for caching purposes
+ * regardless of version.
+ */
+char *
+func_kbuild_source_one(char *o, char **argv, const char *pszFuncName)
+{
+    static int s_fNoCompileDepsDefined = -1;
+    struct variable *pTarget    = kbuild_get_variable_n(ST("target"));
+    struct variable *pSource    = kbuild_get_variable_n(ST("source"));
+    struct variable *pDefPath   = kbuild_get_variable_n(ST("defpath"));
+    struct variable *pType      = kbuild_get_variable_n(ST("type"));
+    struct variable *pBldType   = kbuild_get_variable_n(ST("bld_type"));
+    struct variable *pBldTrg    = kbuild_get_variable_n(ST("bld_trg"));
+    struct variable *pBldTrgArch= kbuild_get_variable_n(ST("bld_trg_arch"));
+    struct variable *pBldTrgCpu = kbuild_get_variable_n(ST("bld_trg_cpu"));
+    const int        iVer       = kbuild_version_to_int(argv[0], 0 /*strict*/);
+    struct variable *pTool      = kbuild_get_source_tool(pTarget, pSource, pType, pBldTrg, pBldTrgArch,
+                                                         iVer >= 4 ? pBldType : NULL, "tool");
+    struct variable *pOutBase   = kbuild_get_object_base(pTarget, pSource, "outbase");
+    struct variable *pObjSuff   = kbuild_get_object_suffix(pTarget, pSource, pTool, pType, pBldTrg, pBldTrgArch,
+                                                           iVer >= 4 ? pBldType : NULL, "objsuff");
+    struct variable *pDeps, *pOrderDeps, *pDirDep, *pDep, *pVar, *pOutput, *pOutputMaybe;
+#if 0 /* not used */
+    struct variable *pDefs, *pIncs, *pFlags;
+#endif
+    struct variable *pObj       = kbuild_set_object_name_and_dep_and_dirdep_and_PATH_target_source(pTarget, pSource, pOutBase, pObjSuff, "obj", &pDep, &pDirDep);
+    int fInstallOldObjsVar = 0;
+    char *pszDstVar, *pszDst, *pszSrcVar, *pszSrc, *pszVal, *psz;
+    char *pszSavedVarBuf;
+    unsigned cchSavedVarBuf;
+    size_t cch;
+    struct kbuild_sdks Sdks;
+
+    /*
+     * Gather properties.
+     */
+    kbuild_get_sdks(&Sdks, pTarget, pSource, pBldType, pBldTrg, pBldTrgArch);
+
+    if (pDefPath && !pDefPath->value_length)
+        pDefPath = NULL;
+
+
+    /*pDefs  =*/ kbuild_collect_source_prop(pTarget, pSource, pTool, &Sdks, pType, pBldType, pBldTrg, pBldTrgArch, pBldTrgCpu, NULL,
+                                            ST("DEFS"),      ST("defs"),      1 /* left-to-right */);
+    /*pIncs  =*/ kbuild_collect_source_prop(pTarget, pSource, pTool, &Sdks, pType, pBldType, pBldTrg, pBldTrgArch, pBldTrgCpu, pDefPath,
+                                            ST("INCS"),      ST("incs"),     -1 /* right-to-left */);
+    /*pFlags =*/ kbuild_collect_source_prop(pTarget, pSource, pTool, &Sdks, pType, pBldType, pBldTrg, pBldTrgArch, pBldTrgCpu, NULL,
+                                            ST("FLAGS"),     ST("flags"),     1 /* left-to-right */);
+    pDeps      = kbuild_collect_source_prop(pTarget, pSource, pTool, &Sdks, pType, pBldType, pBldTrg, pBldTrgArch, pBldTrgCpu, pDefPath,
+                                            ST("DEPS"),      ST("deps"),      1 /* left-to-right */);
+    pOrderDeps = kbuild_collect_source_prop(pTarget, pSource, pTool, &Sdks, pType, pBldType, pBldTrg, pBldTrgArch, pBldTrgCpu, pDefPath,
+                                            ST("ORDERDEPS"), ST("orderdeps"), 1 /* left-to-right */);
+
+    /*
+     * If we've got a default path, we must expand the source now.
+     * If we do this too early, "<source>_property = stuff" won't work becuase
+     * our 'source' value isn't what the user expects.
+     */
+    if (pDefPath)
+    {
+        /** @todo assert(pSource->origin != o_automatic);  We're changing 'source'
+         *        from the foreach loop!  */
+#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+        assert(!pSource->rdonly_val);
+#endif
+        kbuild_apply_defpath(pDefPath, &pSource->value, &pSource->value_length, &pSource->value_alloc_len, 1 /* can free */);
+    }
+
+    /*
+    # dependencies
+    ifndef NO_COMPILE_DEPS
+    _DEPFILES_INCLUDED += $(dep)
+    $(if $(wildcard $(dep)),$(eval include $(dep)))
+    endif
+     */
+    if (s_fNoCompileDepsDefined == -1)
+        s_fNoCompileDepsDefined = kbuild_lookup_variable_n(ST("NO_COMPILE_DEPS")) != NULL;
+    if (!s_fNoCompileDepsDefined)
+    {
+        pVar = kbuild_query_recursive_variable_n("_DEPFILES_INCLUDED", sizeof("_DEPFILES_INCLUDED") - 1);
+        if (pVar)
+        {
+            if (pVar->recursive)
+                pVar = kbuild_simplify_variable(pVar);
+            append_string_to_variable(pVar, pDep->value, pDep->value_length, 1 /* append */);
+        }
+        else
+            define_variable_vl_global("_DEPFILES_INCLUDED", sizeof("_DEPFILES_INCLUDED") - 1,
+                                      pDep->value, pDep->value_length,
+                                      1 /* duplicate_value */,
+                                      o_file,
+                                      0 /* recursive */,
+                                      NULL /* flocp */);
+
+        eval_include_dep(pDep->value, NILF, iVer >= 2 ? incdep_queue : incdep_read_it);
+    }
+
+    /*
+    # call the tool
+    $(target)_$(source)_CMDS_   := $(TOOL_$(tool)_COMPILE_$(type)_CMDS)
+    $(target)_$(source)_OUTPUT_ := $(TOOL_$(tool)_COMPILE_$(type)_OUTPUT)
+    $(target)_$(source)_OUTPUT_MAYBE_ := $(TOOL_$(tool)_COMPILE_$(type)_OUTPUT_MAYBE)
+    $(target)_$(source)_DEPEND_ := $(TOOL_$(tool)_COMPILE_$(type)_DEPEND) $(deps) $(source)
+    $(target)_$(source)_DEPORD_ := $(TOOL_$(tool)_COMPILE_$(type)_DEPORD) $(dirdep)
+    */
+    /** @todo Make all these local variables, if someone needs the info later it
+     *        can be recalculated. (Ticket #80.) */
+    cch = sizeof("TOOL_") + pTool->value_length + sizeof("_COMPILE_") + pType->value_length + sizeof("_USES_KOBJCACHE");
+    if (cch < pTarget->value_length + sizeof("$(_2_OBJS)"))
+        cch = pTarget->value_length + sizeof("$(_2_OBJS)");
+    psz = pszSrcVar = alloca(cch);
+    memcpy(psz, "TOOL_", sizeof("TOOL_") - 1);          psz += sizeof("TOOL_") - 1;
+    memcpy(psz, pTool->value, pTool->value_length);     psz += pTool->value_length;
+    memcpy(psz, "_COMPILE_", sizeof("_COMPILE_") - 1);  psz += sizeof("_COMPILE_") - 1;
+    memcpy(psz, pType->value, pType->value_length);     psz += pType->value_length;
+    pszSrc = psz;
+
+    cch = pTarget->value_length + 1 + pSource->value_length + sizeof("_OUTPUT_MAYBE_");
+    psz = pszDstVar = alloca(cch);
+    memcpy(psz, pTarget->value, pTarget->value_length); psz += pTarget->value_length;
+    *psz++ = '_';
+    memcpy(psz, pSource->value, pSource->value_length); psz += pSource->value_length;
+    pszDst = psz;
+
+    memcpy(pszSrc, "_CMDS", sizeof("_CMDS"));
+    memcpy(pszDst, "_CMDS_", sizeof("_CMDS_"));
+    pVar = kbuild_get_recursive_variable(pszSrcVar);
+    if (iVer <= 2)
+        do_variable_definition_2(NILF, pszDstVar, pVar->value, pVar->value_length,
+                                 !pVar->recursive, 0, o_local, f_simple, 0 /* !target_var */);
+    do_variable_definition_2(NILF, "kbsrc_cmds", pVar->value, pVar->value_length,
+                             !pVar->recursive, 0, o_local, f_simple, 0 /* !target_var */);
+
+    memcpy(pszSrc, "_OUTPUT", sizeof("_OUTPUT"));
+    memcpy(pszDst, "_OUTPUT_", sizeof("_OUTPUT_"));
+    pVar = kbuild_get_recursive_variable(pszSrcVar);
+    if (iVer <= 2)
+        pOutput = do_variable_definition_2(NILF, pszDstVar, pVar->value, pVar->value_length,
+                                           !pVar->recursive, 0, o_local, f_simple, 0 /* !target_var */);
+    pOutput = do_variable_definition_2(NILF, "kbsrc_output", pVar->value, pVar->value_length,
+                                       !pVar->recursive, 0, o_local, f_simple, 0 /* !target_var */);
+
+    memcpy(pszSrc, "_OUTPUT_MAYBE", sizeof("_OUTPUT_MAYBE"));
+    memcpy(pszDst, "_OUTPUT_MAYBE_", sizeof("_OUTPUT_MAYBE_"));
+    pVar = kbuild_query_recursive_variable(pszSrcVar);
+    if (pVar)
+    {
+        if (iVer <= 2)
+            pOutputMaybe = do_variable_definition_2(NILF, pszDstVar, pVar->value, pVar->value_length,
+                                                    !pVar->recursive, 0, o_local, f_simple, 0 /* !target_var */);
+        pOutputMaybe = do_variable_definition_2(NILF, "kbsrc_output_maybe", pVar->value, pVar->value_length,
+                                                !pVar->recursive, 0, o_local, f_simple, 0 /* !target_var */);
+    }
+    else
+    {
+        if (iVer <= 2)
+            pOutputMaybe = do_variable_definition_2(NILF, pszDstVar, "", 0, 1, 0, o_local, f_simple, 0 /* !target_var */);
+        pOutputMaybe = do_variable_definition_2(NILF, "kbsrc_output_maybe", "", 0, 1, 0, o_local, f_simple, 0 /* !target_var */);
+    }
+
+    memcpy(pszSrc, "_DEPEND", sizeof("_DEPEND"));
+    memcpy(pszDst, "_DEPEND_", sizeof("_DEPEND_"));
+    pVar = kbuild_get_recursive_variable(pszSrcVar);
+    psz = pszVal = xmalloc(pVar->value_length + 1 + pDeps->value_length + 1 + pSource->value_length + 1);
+    memcpy(psz, pVar->value, pVar->value_length);       psz += pVar->value_length;
+    *psz++ = ' ';
+    memcpy(psz, pDeps->value, pDeps->value_length);     psz += pDeps->value_length;
+    *psz++ = ' ';
+    memcpy(psz, pSource->value, pSource->value_length + 1);
+    if (iVer <= 2)
+        do_variable_definition_2(NILF, pszDstVar, pszVal, pVar->value_length + 1 + pDeps->value_length + 1 + pSource->value_length,
+                                 !pVar->recursive && !pDeps->recursive && !pSource->recursive,
+                                 NULL, o_local, f_simple, 0 /* !target_var */);
+    do_variable_definition_2(NILF, "kbsrc_depend", pszVal, pVar->value_length + 1 + pDeps->value_length + 1 + pSource->value_length,
+                             !pVar->recursive && !pDeps->recursive && !pSource->recursive,
+                             pszVal, o_local, f_simple, 0 /* !target_var */);
+
+    memcpy(pszSrc, "_DEPORD", sizeof("_DEPORD"));
+    memcpy(pszDst, "_DEPORD_", sizeof("_DEPORD_"));
+    pVar = kbuild_get_recursive_variable(pszSrcVar);
+    psz = pszVal = xmalloc(pVar->value_length + 1 + pDirDep->value_length + 1 + pOrderDeps->value_length + 1);
+    memcpy(psz, pVar->value, pVar->value_length);       psz += pVar->value_length;
+    *psz++ = ' ';
+    memcpy(psz, pDirDep->value, pDirDep->value_length); psz += pDirDep->value_length;
+    *psz++ = ' ';
+    memcpy(psz, pOrderDeps->value, pOrderDeps->value_length + 1);
+    if (iVer <= 2)
+        do_variable_definition_2(NILF, pszDstVar, pszVal,
+                                 pVar->value_length + 1 + pDirDep->value_length + 1 + pOrderDeps->value_length,
+                                 !pVar->recursive && !pDirDep->recursive && !pOrderDeps->recursive,
+                                 NULL, o_local, f_simple, 0 /* !target_var */);
+    do_variable_definition_2(NILF, "kbsrc_depord", pszVal,
+                             pVar->value_length + 1 + pDirDep->value_length + 1 + pOrderDeps->value_length,
+                             !pVar->recursive && !pDirDep->recursive && !pOrderDeps->recursive,
+                             pszVal, o_local, f_simple, 0 /* !target_var */);
+
+    /*
+    _OUT_FILES      += $($(target)_$(source)_OUTPUT_) $($(target)_$(source)_OUTPUT_MAYBE_)
+    */
+    pVar = kbuild_get_variable_n(ST("_OUT_FILES"));
+    append_string_to_variable(pVar, pOutput->value, pOutput->value_length, 1 /* append */);
+    if (pOutputMaybe->value_length)
+        append_string_to_variable(pVar, pOutputMaybe->value, pOutputMaybe->value_length, 1 /* append */);
+
+    /*
+    $(target)_2_OBJS += $(obj)
+    */
+    memcpy(pszDstVar + pTarget->value_length, "_2_OBJS", sizeof("_2_OBJS"));
+    pVar = kbuild_query_recursive_variable_n(pszDstVar, pTarget->value_length + sizeof("_2_OBJS") - 1);
+    fInstallOldObjsVar |= iVer <= 2 && (!pVar || !pVar->value_length);
+    if (pVar)
+    {
+        if (pVar->recursive)
+            pVar = kbuild_simplify_variable(pVar);
+        append_string_to_variable(pVar, pObj->value, pObj->value_length, 1 /* append */);
+    }
+    else
+        define_variable_vl_global(pszDstVar, pTarget->value_length + sizeof("_2_OBJS") - 1,
+                                  pObj->value, pObj->value_length,
+                                  1 /* duplicate_value */,
+                                  o_file,
+                                  0 /* recursive */,
+                                  NULL /* flocp */);
+
+    /*
+     * Install legacy variable.
+     */
+    if (fInstallOldObjsVar)
+    {
+        /* $(target)_OBJS_ = $($(target)_2_OBJS)*/
+        memcpy(pszDstVar + pTarget->value_length, "_OBJS_", sizeof("_OBJS_"));
+
+        pszSrcVar[0] = '$';
+        pszSrcVar[1] = '(';
+        memcpy(pszSrcVar + 2, pTarget->value, pTarget->value_length);
+        psz = pszSrcVar + 2 + pTarget->value_length;
+        memcpy(psz, "_2_OBJS)", sizeof("_2_OBJS)"));
+
+        define_variable_vl_global(pszDstVar, pTarget->value_length + sizeof("_OBJS_") - 1,
+                                  pszSrcVar, pTarget->value_length + sizeof("$(_2_OBJS)") - 1,
+                                  1 /* duplicate_value */,
+                                  o_file,
+                                  1 /* recursive */,
+                                  NULL /* flocp */);
+    }
+
+    /*
+    $(eval $(def_target_source_rule))
+    */
+    if (iVer > 2)
+    {
+        /*ifneq ($(TOOL_$(tool)_COMPILE_$(type)_USES_KOBJCACHE),)*/
+        int fUsesObjCache = 0;
+        memcpy(pszSrc, "_USES_KOBJCACHE", sizeof("_USES_KOBJCACHE"));
+        pVar = lookup_variable(pszSrcVar, pszSrc + sizeof("_USES_KOBJCACHE") - 1 - pszSrcVar);
+        if (pVar)
+        {
+            if (   !pVar->recursive
+                || IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR(pVar))
+                fUsesObjCache = pVar->value_length > 0;
+            else
+            {
+                unsigned int cchTmp = 0;
+                char *pszTmp = allocated_variable_expand_2(pVar->value, pVar->value_length, &cchTmp);
+                free(pszTmp);
+                fUsesObjCache = cchTmp > 0;
+            }
+        }
+        if (!fUsesObjCache)
+            pVar = kbuild_get_recursive_variable("def_target_source_rule_v3plus");
+        else
+            pVar = kbuild_get_recursive_variable("def_target_source_rule_v3plus_objcache");
+    }
+    else
+        pVar = kbuild_get_recursive_variable("def_target_source_rule");
+    pszVal = variable_expand_string_2(o, pVar->value, pVar->value_length, &psz);
+    assert(!((size_t)pszVal & 3));
+
+    install_variable_buffer(&pszSavedVarBuf, &cchSavedVarBuf);
+    eval_buffer(pszVal, NULL, psz);
+    restore_variable_buffer(pszSavedVarBuf, cchSavedVarBuf);
+
+    kbuild_put_sdks(&Sdks);
+    (void)pszFuncName;
+
+    *pszVal = '\0';
+    return pszVal;
+}
+
+/*
+
+## Inherit one template property in a non-accumulative manner.
+# @param    $(prop)     Property name
+# @param    $(target)	Target name
+# @todo fix the precedence order for some properties.
+define def_inherit_template_one
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop)
+ifndef $(target)_$(prop)
+$(target)_$(prop) := $(TEMPLATE_$($(target)_TEMPLATE)_$(prop))
+endif
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg)
+ifndef $(target)_$(prop).$(bld_trg)
+$(target)_$(prop).$(bld_trg) := $(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg))
+endif
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch)
+ifndef $(target)_$(prop).$(bld_trg).$(bld_trg_arch)
+$(target)_$(prop).$(bld_trg).$(bld_trg_arch) := $(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch))
+endif
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch)
+ifndef $(target)_$(prop).$(bld_trg_arch)
+$(target)_$(prop).$(bld_trg_arch) := $(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch))
+endif
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu)
+ifndef $(target)_$(prop).$(bld_trg_cpu)
+$(target)_$(prop).$(bld_trg_cpu) := $(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu))
+endif
+endif
+endef
+
+## Inherit one template property in a non-accumulative manner, deferred expansion.
+# @param    1: $(prop)     Property name
+# @param    2: $(target)	Target name
+# @todo fix the precedence order for some properties.
+# @remark this define relies on double evaluation
+define def_inherit_template_one_deferred
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop)
+ifndef $(target)_$(prop)
+$(target)_$(prop) = $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop))
+endif
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg)
+ifndef $(target)_$(prop).$(bld_trg)
+$(target)_$(prop).$(bld_trg) = $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg))
+endif
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch)
+ifndef $(target)_$(prop).$(bld_trg).$(bld_trg_arch)
+$(target)_$(prop).$(bld_trg).$(bld_trg_arch) = $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch))
+endif
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch)
+ifndef $(target)_$(prop).$(bld_trg_arch)
+$(target)_$(prop).$(bld_trg_arch) = $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch))
+endif
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu)
+ifndef $(target)_$(prop).$(bld_trg_cpu)
+$(target)_$(prop).$(bld_trg_cpu) = $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu))
+endif
+endif
+endef
+
+## Inherit one acculumlative template property where the 'most significant' items are at the left end.
+# @param    $(prop)     Property name
+# @param    $(target)	Target name
+define def_inherit_template_one_accumulate_l
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop)
+ ifeq ($$(flavor $(target)_$(prop)),simple)
+ $$(evalcall2 def_simple_2_recursive,$(target)_$(prop))
+ endif
+$(target)_$(prop) += $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop))
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(KBUILD_TYPE)
+ ifeq ($$(flavor $(target)_$(prop).$(KBUILD_TYPE)),simple)
+ $$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(KBUILD_TYPE))
+ endif
+$(target)_$(prop).$(KBUILD_TYPE) += $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(KBUILD_TYPE))
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg)
+ ifeq ($$(flavor $(target)_$(prop).$(bld_trg)),simple)
+ $$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg))
+ endif
+$(target)_$(prop).$(bld_trg) += $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg))
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch)
+ ifeq ($$(flavor $(target)_$(prop).$(bld_trg).$(bld_trg_arch)),simple)
+ $$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg).$(bld_trg_arch))
+ endif
+$(target)_$(prop).$(bld_trg).$(bld_trg_arch) += $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch))
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu)
+ ifeq ($$(flavor $(target)_$(prop).$(bld_trg_cpu)),simple)
+ $$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg_cpu))
+ endif
+$(target)_$(prop).$(bld_trg_cpu) += $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu))
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch)
+ ifeq ($$(flavor $(target)_$(prop).$(bld_trg_arch)),simple)
+ $$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg_arch))
+ endif
+$(target)_$(prop).$(bld_trg_arch) += $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch))
+endif
+endef
+
+## Inherit one acculumlative template property where the 'most significant' items are at the right end.
+# @param    $(prop)     Property name
+# @param    $(target)	Target name
+define def_inherit_template_one_accumulate_r
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop)
+ ifeq ($$(flavor $(target)_$(prop)),simple)
+ $$(evalcall2 def_simple_2_recursive,$(target)_$(prop))
+ endif
+$(target)_$(prop) <=$$(TEMPLATE_$($(target)_TEMPLATE)_$(prop))
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(KBUILD_TYPE)
+ ifeq ($$(flavor $(target)_$(prop).$(KBUILD_TYPE)),simple)
+ $$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(KBUILD_TYPE))
+ endif
+$(target)_$(prop).$(KBUILD_TYPE) <=$$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(KBUILD_TYPE))
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg)
+ ifeq ($$(flavor $(target)_$(prop).$(bld_trg)),simple)
+ $$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg))
+ endif
+$(target)_$(prop).$(bld_trg) <=$$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg))
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch)
+ ifeq ($$(flavor $(target)_$(prop).$(bld_trg).$(bld_trg_arch)),simple)
+ $$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg).$(bld_trg_arch))
+ endif
+$(target)_$(prop).$(bld_trg).$(bld_trg_arch) <=$$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch))
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu)
+ ifeq ($$(flavor $(target)_$(prop).$(bld_trg_cpu)),simple)
+ $$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg_cpu))
+ endif
+$(target)_$(prop).$(bld_trg_cpu) <=$$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu))
+endif
+ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch)
+ ifeq ($$(flavor $(target)_$(prop).$(bld_trg_arch)),simple)
+ $$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg_arch))
+ endif
+$(target)_$(prop).$(bld_trg_arch) <=$$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch))
+endif
+endef
+
+
+## Inherit template properties for on target.
+# @param    $(target)    Target name.
+define def_inherit_template
+# sanity check.
+ifdef _$(target)_ALREADY_PROCESSED
+ $(error kBuild: The target $(target) appears more than once in the target lists! Please correct the makefile(s))
+endif
+_$(target)_ALREADY_PROCESSED := 1
+
+# Inherit any default template.
+ifdef TEMPLATE
+ifeq ($($(target)_TEMPLATE),)
+$(eval $(target)_TEMPLATE:=$(TEMPLATE))
+endif
+endif
+# Expand the template if specified.
+ifneq ($($(target)_TEMPLATE),)
+$(foreach prop,$(PROPS_SINGLE),$(evalval def_inherit_template_one))
+$(foreach prop,$(PROPS_DEFERRED),$(eval $(def_inherit_template_one_deferred))) # exploits the 2 evaluation, so no value!
+$(foreach prop,$(PROPS_ACCUMULATE_L),$(eval $(def_inherit_template_one_accumulate_l))) # += works fine without value
+$(foreach prop,$(PROPS_ACCUMULATE_R),$(eval $(def_inherit_template_one_accumulate_r))) # use <= (kmk addition)
+endif
+endef
+
+
+Invoked like this:
+ $(kb-exp-tmpl 1,$(_ALL_TARGET_TARGETS),$(KBUILD_TARGET),$(KBUILD_TARGET_ARCH),$(KBUILD_TARGET_CPU),$(KBUILD_TYPE))
+*/
+char *
+func_kbuild_expand_template(char *o, char **argv, const char *pszFuncName)
+{
+    const char         *pszVersion    = argv[0];
+    const char         *pszBldTrg     = argv[2];
+    const char         *pszBldTrgArch = argv[3];
+    const char         *pszBldTrgCpu  = argv[4];
+    const char         *pszBldType    = argv[5];
+    size_t              cchBldTrg     = strlen(pszBldTrg);
+    size_t              cchBldTrgArch = strlen(pszBldTrgArch);
+    size_t              cchBldTrgCpu  = strlen(pszBldTrgCpu);
+    size_t              cchBldType    = strlen(pszBldType);
+    size_t              cchMaxBld     = cchBldTrg + cchBldTrgArch + cchBldTrgCpu + cchBldType; /* too big, but so what. */
+    struct kbet_key
+    {
+        unsigned int        cch;
+        char               *psz;
+    }                   aKeys[6];
+    unsigned int const  cKeys = 6;
+    unsigned int        iKey;
+    struct variable    *pDefTemplate;
+    struct variable    *pProps;
+    struct kbet_prop
+    {
+        const char         *pch;
+        unsigned int        cch;
+        enum kbet_prop_enum { kPropSingle, kPropDeferred, kPropAccumulateL, kPropAccumulateR }
+                            enmType;
+    }                  *paProps;
+    unsigned int        cProps;
+    unsigned int        iProp;
+    size_t              cchMaxProp;
+    struct variable    *pVarTrg;
+    struct variable    *pVarSrc;
+    const char         *pszIter;
+    const char         *pszTarget;
+    unsigned int        cchTarget;
+    char               *pszSrc    = 0;
+    char               *pszSrcRef = 0;
+    char               *pszSrcBuf = 0;
+    size_t              cchSrcBuf = 0;
+    char               *pszTrg    = 0;
+    size_t              cchTrg    = 0;
+
+    /*
+     * Validate input.
+     */
+    if (pszVersion[0] != '1' || pszVersion[1])
+      OSS(fatal, NULL, "%s: Unsupported version `%s'", pszFuncName, pszVersion);
+
+    if (!cchBldTrg)
+      OS(fatal, NULL, "%s: missing bldtrg", pszFuncName);
+
+    if (!cchBldTrgArch)
+      OS(fatal, NULL, "%s: missing bld_trg_arch", pszFuncName);
+
+    if (!cchBldTrgCpu)
+      OS(fatal, NULL, "%s: missing bld_trg_cpu", pszFuncName);
+
+    if (!cchBldType)
+      OS(fatal, NULL, "%s: missing bld_type", pszFuncName);
+
+    /*
+     * Prepare the keywords, prepending dots for quicker copying.
+     * This allows for an inner loop when processing properties, saving code
+     * at the expense of a few xmallocs.
+     */
+    /* the first entry is empty. */
+    aKeys[0].cch = 0;
+    aKeys[0].psz = NULL;
+
+    /* .$(bld_type) */
+    aKeys[1].cch = cchBldType + 1;
+    aKeys[1].psz = xmalloc (aKeys[1].cch + 1);
+    aKeys[1].psz[0] = '.';
+    memcpy(aKeys[1].psz + 1, pszBldType, cchBldType + 1);
+
+    /* .$(bld_trg) */
+    aKeys[2].cch = cchBldTrg + 1;
+    aKeys[2].psz = xmalloc (aKeys[2].cch + 1);
+    aKeys[2].psz[0] = '.';
+    memcpy(aKeys[2].psz + 1, pszBldTrg, cchBldTrg + 1);
+
+    /* .$(bld_trg).$(bld_trg_arch) */
+    aKeys[3].cch = cchBldTrg + 1 + cchBldTrgArch + 1;
+    aKeys[3].psz = xmalloc (aKeys[3].cch + 1);
+    aKeys[3].psz[0] = '.';
+    memcpy(aKeys[3].psz + 1, pszBldTrg, cchBldTrg);
+    aKeys[3].psz[1 + cchBldTrg] = '.';
+    memcpy(aKeys[3].psz + 1 + cchBldTrg + 1, pszBldTrgArch, cchBldTrgArch + 1);
+
+    /* .$(bld_trg_cpu) */
+    aKeys[4].cch = cchBldTrgCpu + 1;
+    aKeys[4].psz = xmalloc (aKeys[4].cch + 1);
+    aKeys[4].psz[0] = '.';
+    memcpy(aKeys[4].psz + 1, pszBldTrgCpu, cchBldTrgCpu + 1);
+
+    /* .$(bld_trg_arch) */
+    aKeys[5].cch = cchBldTrgArch + 1;
+    aKeys[5].psz = xmalloc (aKeys[5].cch + 1);
+    aKeys[5].psz[0] = '.';
+    memcpy(aKeys[5].psz + 1, pszBldTrgArch, cchBldTrgArch + 1);
+
+
+    /*
+     * Prepare the properties, folding them into an array.
+     * This way we won't have to reparse them for each an every target, though
+     * it comes at the expense of one or more heap calls.
+     */
+#define PROP_ALLOC_INC  128
+    iProp = 0;
+    cProps = PROP_ALLOC_INC;
+    paProps = xmalloc(sizeof(*pProps) * cProps);
+
+    pProps = kbuild_get_variable_n(ST("PROPS_SINGLE"));
+    pszIter = pProps->value;
+    while ((paProps[iProp].pch = find_next_token(&pszIter, &paProps[iProp].cch)))
+    {
+        paProps[iProp].enmType = kPropSingle;
+        if (++iProp >= cProps)
+        {
+            cProps += PROP_ALLOC_INC;
+            paProps = xrealloc(paProps, sizeof(*paProps) * cProps);
+        }
+
+    }
+
+    pProps = kbuild_get_variable_n(ST("PROPS_DEFERRED"));
+    pszIter = pProps->value;
+    while ((paProps[iProp].pch = find_next_token(&pszIter, &paProps[iProp].cch)))
+    {
+        paProps[iProp].enmType = kPropDeferred;
+        if (++iProp >= cProps)
+        {
+            cProps += PROP_ALLOC_INC;
+            paProps = xrealloc(paProps, sizeof(*paProps) * cProps);
+        }
+    }
+
+    pProps = kbuild_get_variable_n(ST("PROPS_ACCUMULATE_L"));
+    pszIter = pProps->value;
+    while ((paProps[iProp].pch = find_next_token(&pszIter, &paProps[iProp].cch)))
+    {
+        paProps[iProp].enmType = kPropAccumulateL;
+        if (++iProp >= cProps)
+        {
+            cProps += PROP_ALLOC_INC;
+            paProps = xrealloc(paProps, sizeof(*paProps) * cProps);
+        }
+    }
+
+    pProps = kbuild_get_variable_n(ST("PROPS_ACCUMULATE_R"));
+    pszIter = pProps->value;
+    while ((paProps[iProp].pch = find_next_token(&pszIter, &paProps[iProp].cch)))
+    {
+        paProps[iProp].enmType = kPropAccumulateR;
+        if (++iProp >= cProps)
+        {
+            cProps += PROP_ALLOC_INC;
+            paProps = xrealloc(paProps, sizeof(*paProps) * cProps);
+        }
+    }
+#undef PROP_ALLOC_INC
+    cProps = iProp;
+
+    /* find the max prop length. */
+    cchMaxProp = paProps[0].cch;
+    while (--iProp > 0)
+        if (paProps[iProp].cch > cchMaxProp)
+            cchMaxProp = paProps[iProp].cch;
+
+    /*
+     * Query and prepare (strip) the default template
+     * (given by the TEMPLATE variable).
+     */
+    pDefTemplate = kbuild_lookup_variable_n(ST("TEMPLATE"));
+    if (pDefTemplate)
+    {
+        if (   pDefTemplate->value_length
+            && (   ISSPACE(pDefTemplate->value[0])
+                || ISSPACE(pDefTemplate->value[pDefTemplate->value_length - 1])))
+        {
+            unsigned int off;
+            if (pDefTemplate->rdonly_val)
+                OS(fatal, NULL, "%s: TEMPLATE is read-only", pszFuncName);
+
+            /* head */
+            for (off = 0; ISSPACE(pDefTemplate->value[off]); off++)
+                /* nothing */;
+            if (off)
+            {
+                pDefTemplate->value_length -= off;
+                memmove(pDefTemplate->value, pDefTemplate->value + off, pDefTemplate->value_length + 1);
+            }
+
+            /* tail */
+            off = pDefTemplate->value_length;
+            while (off > 0 && ISSPACE(pDefTemplate->value[off - 1]))
+                off--;
+            pDefTemplate->value_length = off;
+            pDefTemplate->value[off] = '\0';
+
+            VARIABLE_CHANGED(pDefTemplate);
+        }
+
+        if (!pDefTemplate->value_length)
+            pDefTemplate = NULL;
+    }
+
+    /*
+     * Iterate the target list.
+     */
+    pszIter = argv[1];
+    while ((pszTarget = find_next_token(&pszIter, &cchTarget)))
+    {
+        char *pszTrgProp, *pszSrcProp;
+        char *pszTrgKey, *pszSrcKey;
+        struct variable *pTmpl;
+        const char *pszTmpl;
+        size_t cchTmpl, cchMax;
+
+        /* resize the target buffer. */
+        cchMax = cchTarget + cchMaxProp + cchMaxBld + 10;
+        if (cchTrg < cchMax)
+        {
+            cchTrg = (cchMax + 31U) & ~(size_t)31;
+            pszTrg = xrealloc(pszTrg, cchTrg);
+        }
+
+        /*
+         * Query the TEMPLATE property, if not found or zero-length fall back on the default.
+         */
+        memcpy(pszTrg, pszTarget, cchTarget);
+        pszTrgProp = pszTrg + cchTarget;
+        memcpy(pszTrgProp, "_TEMPLATE", sizeof("_TEMPLATE"));
+        pszTrgProp++; /* after '_'. */
+
+        /** @todo Change this to a recursive lookup with simplification below. That
+         *        will allow target_TEMPLATE = $(NO_SUCH_TEMPLATE) instead of having
+         *        to use target_TEMPLATE = DUMMY */
+        pTmpl = kbuild_lookup_variable_n(pszTrg, cchTarget + sizeof("_TEMPLATE") - 1);
+        if (!pTmpl || !pTmpl->value_length)
+        {
+            if (!pDefTemplate)
+                continue; /* no template */
+            pszTmpl = pDefTemplate->value;
+            cchTmpl = pDefTemplate->value_length;
+        }
+        else
+        {
+            pszTmpl = pTmpl->value;
+            cchTmpl = pTmpl->value_length;
+            while (ISSPACE(*pszTmpl))
+                cchTmpl--, pszTmpl++;
+            if (!cchTmpl)
+                continue; /* no template */
+        }
+
+        /* resize the source buffer. */
+        cchMax = sizeof("TEMPLATE_") + cchTmpl + cchMaxProp + cchMaxBld + 10 + sizeof(void *);
+        if (cchSrcBuf < cchMax)
+        {
+            cchSrcBuf = (cchMax + 31U) & ~(size_t)31;
+            pszSrcBuf = xrealloc(pszSrcBuf, cchSrcBuf);
+            pszSrc = pszSrcBuf + sizeof(void *);  assert(sizeof(void *) >= 2);
+            pszSrcRef = pszSrc - 2;
+            pszSrcRef[0] = '$';
+            pszSrcRef[1] = '(';
+        }
+
+        /* prepare the source buffer */
+        memcpy(pszSrc, "TEMPLATE_", sizeof("TEMPLATE_") - 1);
+        pszSrcProp = pszSrc + sizeof("TEMPLATE_") - 1;
+        memcpy(pszSrcProp, pszTmpl, cchTmpl);
+        pszSrcProp += cchTmpl;
+        *pszSrcProp++ = '_';
+
+        /*
+         * Process properties.
+         * Note! The single and deferred are handled in the same way now.
+         */
+#define BY_REF_LIMIT   64 /*(cchSrcVar * 4 > 64 ? cchSrcVar * 4 : 64)*/
+
+        for (iProp = 0; iProp < cProps; iProp++)
+        {
+            memcpy(pszTrgProp, paProps[iProp].pch, paProps[iProp].cch);
+            pszTrgKey = pszTrgProp + paProps[iProp].cch;
+
+            memcpy(pszSrcProp, paProps[iProp].pch, paProps[iProp].cch);
+            pszSrcKey = pszSrcProp + paProps[iProp].cch;
+
+            for (iKey = 0; iKey < cKeys; iKey++)
+            {
+                char *pszTrgEnd;
+                size_t cchSrcVar;
+
+                /* lookup source, skip ahead if it doesn't exist. */
+                memcpy(pszSrcKey, aKeys[iKey].psz, aKeys[iKey].cch);
+                cchSrcVar = pszSrcKey - pszSrc + aKeys[iKey].cch;
+                pszSrc[cchSrcVar] = '\0';
+                pVarSrc = kbuild_query_recursive_variable_n(pszSrc, cchSrcVar);
+                if (!pVarSrc)
+                    continue;
+
+                /* lookup target, skip ahead if it exists. */
+                memcpy(pszTrgKey, aKeys[iKey].psz, aKeys[iKey].cch);
+                pszTrgEnd = pszTrgKey + aKeys[iKey].cch;
+                *pszTrgEnd = '\0';
+                pVarTrg = kbuild_query_recursive_variable_n(pszTrg, pszTrgEnd - pszTrg);
+
+                switch (paProps[iProp].enmType)
+                {
+                    case kPropAccumulateL:
+                    case kPropAccumulateR:
+                        if (pVarTrg)
+                        {
+                            /* Append to existing variable. If the source is recursive,
+                               or we append by reference, we'll have to make sure the
+                               target is recusive as well. */
+                            if (    !pVarTrg->recursive
+                                &&  (   pVarSrc->value_length >= BY_REF_LIMIT
+                                     || pVarSrc->recursive))
+                                pVarTrg->recursive = 1;
+
+                            if (pVarSrc->value_length < BY_REF_LIMIT)
+                                append_string_to_variable(pVarTrg, pVarSrc->value, pVarSrc->value_length,
+                                                          paProps[iProp].enmType == kPropAccumulateL /* append */);
+                            else
+                            {
+                                pszSrc[cchSrcVar] = ')';
+                                pszSrc[cchSrcVar + 1] = '\0';
+                                append_string_to_variable(pVarTrg, pszSrcRef, 2 + cchSrcVar + 1,
+                                                          paProps[iProp].enmType == kPropAccumulateL /* append */);
+                            }
+                            break;
+                        }
+                        /* else: the target variable doesn't exist, create it. */
+                        /* fall thru */
+
+                    case kPropSingle:
+                    case kPropDeferred:
+                        if (pVarTrg)
+                            continue; /* skip ahead if it already exists. */
+
+                        /* copy the variable if its short, otherwise reference it. */
+                        if (pVarSrc->value_length < BY_REF_LIMIT)
+                            define_variable_vl_global(pszTrg, pszTrgEnd - pszTrg,
+                                                      pVarSrc->value, pVarSrc->value_length,
+                                                      1 /* duplicate_value */,
+                                                      o_file,
+                                                      pVarSrc->recursive,
+                                                      NULL /* flocp */);
+                        else
+                        {
+                            pszSrc[cchSrcVar] = ')';
+                            pszSrc[cchSrcVar + 1] = '\0';
+                            define_variable_vl_global(pszTrg, pszTrgEnd - pszTrg,
+                                                      pszSrcRef, 2 + cchSrcVar + 1,
+                                                      1 /* duplicate_value */,
+                                                      o_file,
+                                                      1 /* recursive */,
+                                                      NULL /* flocp */);
+                        }
+                        break;
+
+                }
+
+            } /* foreach key */
+        } /* foreach prop */
+#undef BY_REF_LIMIT
+    } /* foreach target */
+
+    /*
+     * Cleanup.
+     */
+    free(pszSrcBuf);
+    free(pszTrg);
+    free(paProps);
+    for (iKey = 1; iKey < cKeys; iKey++)
+        free(aKeys[iKey].psz);
+
+    return o;
+}
+
+#endif /* KMK_HELPERS */
+
diff --git a/src/kmk/kbuild.h b/src/kmk/kbuild.h
new file mode 100644
index 0000000..5d9a85f
--- /dev/null
+++ b/src/kmk/kbuild.h
@@ -0,0 +1,77 @@
+/* $Id: kbuild.h 3140 2018-03-14 21:28:10Z bird $ */
+/** @file
+ * kBuild specific make functionality.
+ */
+
+/*
+ * Copyright (c) 2006-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef ___kBuild_h
+#define ___kBuild_h
+
+char *func_kbuild_source_tool(char *o, char **argv, const char *pszFuncName);
+char *func_kbuild_object_base(char *o, char **argv, const char *pszFuncName);
+char *func_kbuild_object_suffix(char *o, char **argv, const char *pszFuncName);
+char *func_kbuild_source_prop(char *o, char **argv, const char *pszFuncName);
+char *func_kbuild_source_one(char *o, char **argv, const char *pszFuncName);
+char *func_kbuild_expand_template(char *o, char **argv, const char *pszFuncName);
+
+void init_kbuild(int argc, char **argv);
+const char *get_kbuild_path(void);
+const char *get_kbuild_bin_path(void);
+const char *get_default_kbuild_shell(void);
+
+/** @name kBuild objects
+ * @{ */
+struct kbuild_eval_data;
+struct kbuild_object;
+
+extern struct kbuild_eval_data *g_pTopKbEvalData;
+
+
+/** Special return value indicating variable name isn't an accessor. */
+#define KOBJ_NOT_KBUILD_ACCESSOR    ( (struct kbuild_object *)~(size_t)0 )
+
+/** Special lookup_kbuild_object_variable return value. */
+#define VAR_NOT_KBUILD_ACCESSOR     ( (struct variable *)~(size_t)0 )
+
+struct variable    *lookup_kbuild_object_variable_accessor(const char *pchName, size_t cchName);
+int                 is_kbuild_object_variable_accessor(const char *pchName, size_t cchName);
+struct variable    *try_define_kbuild_object_variable_via_accessor(const char *pszName, size_t cchName,
+                                                                   const char *pszValue, size_t cchValue, int fDuplicateValue,
+                                                                   enum variable_origin enmOrigin, int fRecursive,
+                                                                   floc const *pFileLoc);
+struct variable    *define_kbuild_object_variable_in_top_obj(const char *pszName, size_t cchName,
+                                                             const char *pszValue, size_t cchValue, int fDuplicateValue,
+                                                             enum variable_origin enmOrigin, int fRecursive,
+                                                             floc const *pFileLoc);
+struct variable    *kbuild_object_variable_pre_append(const char *pchName, size_t cchName,
+                                                      const char *pchValue, size_t cchValue, int fSimpleValue,
+                                                      enum variable_origin enmOrigin, int fAppend,
+                                                      const floc *pFileLoc);
+int                 eval_kbuild_read_hook(struct kbuild_eval_data **kdata, const floc *flocp,
+                                          const char *word, size_t wlen, const char *line, const char *eos, int ignoring);
+void                print_kbuild_data_base(void);
+void                print_kbuild_define_stats(void);
+void                init_kbuild_object(void);
+/** @} */
+
+#endif
+
diff --git a/src/kmk/kbuildprf.c b/src/kmk/kbuildprf.c
new file mode 100644
index 0000000..9fb4b97
--- /dev/null
+++ b/src/kmk/kbuildprf.c
@@ -0,0 +1,49 @@
+#include <stdio.h>

+#include <io.h>

+#include <errno.h>

+#include <Windows.h>

+

+__int64 prf_now(void)

+{

+    return GetTickCount();

+}

+

+#undef open

+int prf_open(const char *name, int of, int mask)

+{

+    int fd;

+//    int err;

+//    __int64 t = prf_now();

+    fd = _open(name, of, mask);

+//    err = errno;

+//    t = prf_now() - t;

+//    fprintf(stderr, "open(%s, %#x) -> %d/%d in %lu\n", name, of, fd, err, (long)t);

+//    errno = err;

+    return fd;

+}

+

+#undef close

+int prf_close(int fd)

+{

+    int rc;

+    rc = _close(fd);

+    return rc;

+}

+

+

+#undef read

+int prf_read(int fd, void *buf, long cb)

+{

+    int cbRead;

+    cbRead = _read(fd, buf, cb);

+    return cbRead;

+}

+

+#undef lseek

+long prf_lseek(int fd, long off, int whence)

+{

+    long rc;

+    rc = _lseek(fd, off, whence);

+    return rc;

+}

+

diff --git a/src/kmk/kdepdb.c b/src/kmk/kdepdb.c
new file mode 100644
index 0000000..260e695
--- /dev/null
+++ b/src/kmk/kdepdb.c
@@ -0,0 +1,1087 @@
+/* $Id: incdep.c 2283 2009-02-24 04:54:00Z bird $ */
+/** @file
+ * kdepdb - Dependency database.
+ */
+
+/*
+ * Copyright (c) 2009-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "makeint.h"
+#include "../lib/k/kDefs.h"
+#include "../lib/k/kTypes.h"
+#include <assert.h>
+#include <glob.h>
+
+#include "dep.h"
+#include "filedef.h"
+#include "job.h"
+#include "commands.h"
+#include "variable.h"
+#include "rule.h"
+#include "debug.h"
+#include "strcache2.h"
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#else
+# include <sys/file.h>
+#endif
+
+#if K_OS == K_WINDOWS
+# include <Windows.h>
+#else
+# include <unistd.h>
+# include <sys/mman.h>
+#endif
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** @def KDEPDB_ASSERT_SIZE
+ * Check the size of an on-disk type.
+ *
+ * @param   Type    The type which size it being checked.
+ * @param   Size    The size it should have.
+ */
+#ifdef __GNUC__
+# define KDEPDB_ASSERT_SIZE(Type, Size) \
+    extern int kDepDbAssertSize[1] __attribute__((unused)), \
+               kDepDbAssertSize[sizeof(Type) == (Size)] __attribute__((unused))
+#else
+# define KDEPDB_ASSERT_SIZE(Type, Size) \
+    typedef int kDepDbAssertSize[sizeof(Type) == (Size)]
+#endif
+KDEPDB_ASSERT_SIZE(KU8,  1);
+KDEPDB_ASSERT_SIZE(KU16, 2);
+KDEPDB_ASSERT_SIZE(KU32, 4);
+KDEPDB_ASSERT_SIZE(KU64, 8);
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * File header.
+ *
+ * @remarks     All on-disk formats are in little-endian format.
+ */
+typedef struct KDEPDBHDR
+{
+    /** The file magic.  */
+    KU8             szMagic[8];
+    /** The major file format version. */
+    KU8             uVerMajor;
+    /** The minor file format version. */
+    KU8             uVerMinor;
+    /** Reserved \#2. */
+    KU16            uReserved2;
+    /** Reserved \#1. */
+    KU32            uReserved1;
+    /** The internal name of this file. */
+    KU8             szName[16];
+} KDEPDBHDR;
+KDEPDB_ASSERT_SIZE(KDEPDBHDR, 32);
+
+/** The file header magic value. */
+#define KDEPDBHDR_MAGIC             "kDepDb\0"
+/** The current major file format version number.  */
+#define KDEPDBHDR_VERSION_MAJOR     0
+/** The current minor file format version number.
+ * Numbers above 240 indicate unsupported development variants. */
+#define KDEPDBHDR_VERSION_MINOR     240
+
+
+/**
+ * Hash table file.
+ *
+ * The hash table is recreated in a new file when we have to grow it.
+ */
+typedef struct KDEPDBHASH
+{
+    /** The file header. */
+    KDEPDBHDR       Hdr;
+    /** The number of hash table entries. */
+    KU32            cEntries;
+    /** The number of hash table entries with content. */
+    KU32            cUsedEntries;
+    /** The number of collisions on insert. */
+    KU32            cCollisions;
+    /** Reserved member \#5. */
+    KU32            uReserved5;
+    /** Reserved member \#4. */
+    KU32            uReserved4;
+    /** Reserved member \#3. */
+    KU32            uReserved3;
+    /** Reserved member \#2. */
+    KU32            uReserved2;
+    /** Reserved member \#1. */
+    KU32            uReserved1;
+    /** The hash table. */
+    KU32            auEntries[32];
+} KDEPDBHASH;
+KDEPDB_ASSERT_SIZE(KDEPDBHASH, 32+32+4*32);
+
+/** The item value indicating that it is unused. */
+#define KDEPDBHASH_UNUSED   KU32_C(0xffffffff)
+/** The item indicating that it hash been deleted. */
+#define KDEPDBHASH_DELETED  KU32_C(0xfffffffe)
+/** The first special item value. */
+#define KDEPDBHASH_END      KU32_C(0xfffffff0)
+
+
+/**
+ * A string table string entry.
+ *
+ * This should be a multiple of 32 bytes.
+ */
+typedef struct KDEPDBSTRING
+{
+    /** The hash number for the string. */
+    KU32            uHash;
+    /** The string length, excluding the zero terminator. */
+    KU32            cchString;
+    /** The string. */
+    KU8             szString[24];
+} KDEPDBSTRING;
+KDEPDB_ASSERT_SIZE(KDEPDBSTRING, 32);
+
+
+/**
+ * String table file.
+ *
+ * The file is insertion only and will grow forever.
+ */
+typedef struct KDEPDBSTRTAB
+{
+    /** The file header. */
+    KDEPDBHDR       Hdr;
+    /** The end of the valid string table indexes. */
+    KU32            iStringEnd;
+    /** Reserved member \#7. */
+    KU32            uReserved7;
+    /** Reserved member \#6. */
+    KU32            uReserved6;
+    /** Reserved member \#5. */
+    KU32            uReserved5;
+    /** Reserved member \#4. */
+    KU32            uReserved4;
+    /** Reserved member \#3. */
+    KU32            uReserved3;
+    /** Reserved member \#2. */
+    KU32            uReserved2;
+    /** Reserved member \#1. */
+    KU32            uReserved1;
+    /** The string table. */
+    KDEPDBSTRING    aStrings[1];
+} KDEPDBSTRTAB;
+KDEPDB_ASSERT_SIZE(KDEPDBSTRTAB, 32+32+32);
+
+/** The end of the valid string table indexes (exclusive). */
+#define KDEPDBG_STRTAB_IDX_END          KU32_C(0x80000000)
+/** The string was not found. */
+#define KDEPDBG_STRTAB_IDX_NOT_FOUND    KU32_C(0xfffffffd)
+/** Error during string table operation.  */
+#define KDEPDBG_STRTAB_IDX_ERROR        KU32_C(0xfffffffe)
+/** Generic invalid string table index. */
+#define KDEPDBG_STRTAB_IDX_INVALID      KU32_C(0xffffffff)
+
+
+/**
+ * Directory entry.
+ */
+typedef struct KDEPDBDIRENTRY
+{
+    /** The string table index of the entry name.
+     * Unused entries are set to KDEPDBG_STRTAB_IDX_INVALID. */
+    KU32            iName;
+    /** The actual data stream size.
+     * Unused entries are set to KU32_MAX. */
+    KU32            cbData;
+    /** The number of blocks allocated for this stream.
+     * Unused entries are set to KU32_MAX. */
+    KU32            cBlocks;
+    /** The start block number.
+     * The stream is a contiguous sequence of blocks. This optimizes and
+     * simplifies reading the stream at the expense of operations extending it.
+     *
+     * In unused entries, this serves as the free chain pointer with KU32_MAX as
+     * nil value. */
+    KU32            iStartBlock;
+} KDEPDBDIRENTRY;
+KDEPDB_ASSERT_SIZE(KDEPDBDIRENTRY, 16);
+
+/**
+ * Directory file.
+ */
+typedef struct KDEPDBDIR
+{
+    /** The file header. */
+    KDEPDBHDR       Hdr;
+    /** The number of entries. */
+    KU32            cEntries;
+    /** The head of the free chain. (Index into aEntries.) */
+    KU32            iFreeHead;
+    /** Reserved member \#6. */
+    KU32            uReserved6;
+    /** Reserved member \#5. */
+    KU32            uReserved5;
+    /** Reserved member \#4. */
+    KU32            uReserved4;
+    /** Reserved member \#3. */
+    KU32            uReserved3;
+    /** Reserved member \#2. */
+    KU32            uReserved2;
+    /** Reserved member \#1. */
+    KU32            uReserved1;
+    /** Directory entries. */
+    KDEPDBDIRENTRY  aEntries[2];
+} KDEPDBDIR;
+KDEPDB_ASSERT_SIZE(KDEPDBDIR, 32+32+32);
+
+
+/**
+ * A block allocation bitmap.
+ *
+ * This can track 2^(12+8) = 2^20 = 1M blocks.
+ */
+typedef struct KDEPDBDATABITMAP
+{
+    /** Bitmap where each bit is a block.
+     * 0 indicates unused blocks and 1 indicates used ones. */
+    KU8             bm[4096];
+} KDEPDBDATABITMAP;
+KDEPDB_ASSERT_SIZE(KDEPDBDATABITMAP, 4096);
+
+/**
+ * Data file.
+ *
+ * The block numbering starts with this structure as block 0.
+ */
+typedef struct KDEPDBDATA
+{
+    /** The file header. */
+    KDEPDBHDR       Hdr;
+    /** The size of a block. */
+    KU32            cbBlock;
+    /** Reserved member \#7. */
+    KU32            uReserved7;
+    /** Reserved member \#6. */
+    KU32            uReserved6;
+    /** Reserved member \#5. */
+    KU32            uReserved5;
+    /** Reserved member \#4. */
+    KU32            uReserved4;
+    /** Reserved member \#3. */
+    KU32            uReserved3;
+    /** Reserved member \#2. */
+    KU32            uReserved2;
+    /** Reserved member \#1. */
+    KU32            uReserved1;
+
+    /** Block numbers for the allocation bitmaps.  */
+    KU32            aiBitmaps[4096];
+} KDEPDBDATA;
+
+/** The end of the valid block indexes (exclusive). */
+#define KDEPDB_BLOCK_IDX_END            KU32_C(0xfffffff0)
+/** The index of an unallocated bitmap block. */
+#define KDEPDB_BLOCK_IDX_UNALLOCATED    KU32_C(0xffffffff)
+
+
+/**
+ * Stream storing dependencies.
+ *
+ * The stream name gives the output file name, so all that we need is the list
+ * of files it depends on. These are serialized as a list of string table
+ * indexes.
+ */
+typedef struct KDEPDBDEPSTREAM
+{
+    /** String table indexes for the dependencies. */
+    KU32            aiDeps[1];
+} KDEPDBDEPSTREAM;
+
+
+/**
+ * A file handle structure.
+ */
+typedef struct KDEPDBFH
+{
+#if K_OS == K_OS_WINDOWS
+    /** The file handle. */
+    HANDLE      hFile;
+    /** The mapping object handle. */
+    HANDLE      hMapObj;
+#else
+    /** The file handle. */
+    int         fd;
+#endif
+    /** The current file size. */
+    KU32        cb;
+} KDEPDBFH;
+
+
+/**
+ * Internal control structure for a string table.
+ */
+typedef struct KDEPDBINTSTRTAB
+{
+    /** The hash file. */
+    KDEPDBHASH     *pHash;
+    /** The handle of the hash file. */
+    KDEPDBFH        hHash;
+    /** The string table file. */
+    KDEPDBSTRTAB   *pStrTab;
+    /** The handle of the string table file. */
+    KDEPDBFH        hStrTab;
+    /** The end of the allocated string table indexes (i.e. when to grow the
+     * file). */
+    KU32            iStringAlloced;
+} KDEPDBINTSTRTAB;
+
+
+/**
+ * Internal control structure for a data set.
+ *
+ * This governs the directory file, the directory hash file and the data file.
+ */
+typedef struct KDEPDBINTDATASET
+{
+    /** The hash file. */
+    KDEPDBHASH      pHash;
+    /** The size of the hash file. */
+    KU32            cbHash;
+    /** The size of the directory file. */
+    KU32            cbDir;
+    /** The mapping of the directory file. */
+    KDEPDBHASH      pDir;
+    /** The data file. */
+    KDEPDBDATA      pData;
+    /** The size of the data file. */
+    KU32            cbData;
+    /** The handle of the hash file. */
+    KDEPDBFH        hHash;
+    /** The handle of the directory file. */
+    KDEPDBFH        hDir;
+    /** The handle of the data file. */
+    KDEPDBFH        hData;
+} KDEPDBINTDATASET;
+
+
+/**
+ * The database instance.
+ *
+ * To simplifiy things the database uses 8 files for storing the different kinds
+ * of data. This greatly reduces the complexity compared to a single file
+ * solution.
+ */
+typedef struct KDEPDB
+{
+    /** The string table. */
+    KDEPDBINTSTRTAB     StrTab;
+    /** The variable data set. */
+    KDEPDBINTDATASET    DepSet;
+    /** The command data set. */
+    KDEPDBINTDATASET    CmdSet;
+} KDEPDB;
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static void *kDepDbAlloc(KSIZE cb);
+static void kDepDbFree(void *pv);
+static void kDepDbFHInit(KDEPDBFH *pFH);
+static int  kDepDbFHUpdateSize(KDEPDBFH *pFH);
+static int  kDepDbFHOpen(KDEPDBFH *pFH, const char *pszFilename, KBOOL fCreate, KBOOL *pfNew);
+static int  kDepDbFHClose(KDEPDBFH *pFH);
+static int  kDepDbFHWriteAt(KDEPDBFH *pFH, KU32 off, void const *pvBuf, KSIZE cbBuf);
+static int  kDepDbFHMap(KDEPDBFH *pFH, void **ppvMap);
+static int  kDepDbFHUnmap(KDEPDBFH *pFH, void **ppvMap);
+static int  kDepDbFHGrow(KDEPDBFH *pFH, KSIZE cbNew, void **ppvMap);
+static KU32 kDepDbHashString(const char *pszString, size_t cchString);
+
+
+/** xmalloc wrapper. */
+static void *kDepDbAlloc(KSIZE cb)
+{
+    return xmalloc(cb);
+}
+
+/** free wrapper. */
+static void kDepDbFree(void *pv)
+{
+    if (pv)
+        free(pv);
+}
+
+
+/**
+ * Initializes the file handle structure so closing it without first opening it
+ * will work smoothly.
+ *
+ * @param   pFH         The file handle structure.
+ */
+static void kDepDbFHInit(KDEPDBFH *pFH)
+{
+#if K_OS == K_OS_WINDOWS
+    pFH->hFile   = INVALID_HANDLE_VALUE;
+    pFH->hMapObj = INVALID_HANDLE_VALUE;
+#else
+    pFH->fd = -1;
+#endif
+    pFH->cb = 0;
+}
+
+/**
+ * Updates the file size.
+ *
+ * @returns 0 on success. Some non-zero native error code on failure.
+ * @param   pFH             The file handle structure.
+ */
+static int  kDepDbFHUpdateSize(KDEPDBFH *pFH)
+{
+#if K_OS == K_OS_WINDOWS
+    DWORD   rc;
+    DWORD   dwHigh;
+    DWORD   dwLow;
+
+    SetLastError(0);
+    dwLow = GetFileSize(File, &High);
+    rc = GetLastError();
+    if (rc)
+    {
+        pFH->cb = 0;
+        return (int)rc;
+    }
+    if (High)
+        pFH->cb = KU32_MAX;
+    else
+        pFH->cb = dwLow;
+#else
+    off_t cb;
+
+    cb = lseek(pFH->fd, 0, SEEK_END);
+    if (cb == -1)
+    {
+        pFH->cb = 0;
+        return errno;
+    }
+    pFH->cb = cb;
+    if ((off_t)pFH->cb != cb)
+        pFH->cb = KU32_MAX;
+#endif
+    return 0;
+}
+
+/**
+ * Opens an existing file or creates a new one.
+ *
+ * @returns 0 on success. Some non-zero native error code on failure.
+ *
+ * @param   pFH             The file handle structure.
+ * @param   pszFilename     The name of the file.
+ * @param   fCreate         Whether we should create the file or not.
+ * @param   pfCreated       Where to return whether we created it or not.
+ */
+static int  kDepDbFHOpen(KDEPDBFH *pFH, const char *pszFilename, KBOOL fCreate, KBOOL *pfCreated)
+{
+    int                 rc;
+#if K_OS == K_OS_WINDOWS
+    SECURITY_ATTRIBUTES SecAttr;
+
+    SecAttr.bInheritHandle = FALSE;
+    SecAttr.lpSecurityDescriptor = NULL;
+    SecAttr.nLength = 0;
+    pFH->cb = 0;
+    SetLastError(0);
+    pFH->hFile = CreateFile(pszFilename, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, &SecAttr,
+                            fCreate ? OPEN_ALWAYS : OPEN_EXISTING, 0, NULL);
+    if (pFH->hFile == INVALID_HANDLE_VALUE)
+        return GetLastError();
+    *pfCreated = GetLastError() == 0;
+
+#else
+    int fFlags = O_RDWR;
+# ifdef O_BINARY
+    fFlags |= O_BINARY;
+# endif
+    pFH->cb = 0;
+    pFH->fd = open(pszFilename, fFlags, 0);
+    if (pFH->fd >= 0)
+        *pfCreated = K_FALSE;
+    else if (!fCreate)
+        return errno;
+    else
+    {
+        pFH->fd = open(pszFilename, fFlags | O_EXCL | O_CREAT, 0666);
+        if (pFH->fd < 0)
+            return errno;
+        *pfCreated = K_TRUE;
+    }
+    fcntl(pFH->fd, F_SETFD, FD_CLOEXEC);
+#endif
+
+    /* update the size */
+    rc = kDepDbFHUpdateSize(pFH);
+    if (rc)
+        kDepDbFHClose(pFH);
+    return rc;
+}
+
+/**
+ * Closes an open file.
+ *
+ * @returns 0 on success. Some non-zero native error code on failure.
+ *
+ * @param   pFH         The file handle structure.
+ */
+static int  kDepDbFHClose(KDEPDBFH *pFH)
+{
+#if K_OS == K_OS_WINDOWS
+    if (pFH->hFile != INVALID_HANDLE_VALUE)
+    {
+        if (!CloseHandle(pFH->hFile))
+            return GetLastError();
+        pFH->hFile = INVALID_HANDLE_VALUE;
+    }
+
+#else
+    if (pFH->fd >= 0)
+    {
+        if (close(pFH->fd) != 0)
+            return errno;
+        pFH->fd = -1;
+    }
+#endif
+    pFH->cb = 0;
+    return 0;
+}
+
+/**
+ * Writes to a file.
+ *
+ * @returns 0 on success. Some non-zero native error code on failure.
+ *
+ * @param   pFH         The file handle structure.
+ * @param   off         The offset into the file to start writing at.
+ * @param   pvBuf       What to write.
+ * @param   cbBuf       How much to write.
+ */
+static int  kDepDbFHWriteAt(KDEPDBFH *pFH, KU32 off, void const *pvBuf, KSIZE cbBuf)
+{
+#if K_OS == K_OS_WINDOWS
+    ULONG cbWritten;
+
+    if (SetFilePointer(pFH->hFile, off, NULL, FILE_CURRENT) == INVALID_SET_FILE_POINTER)
+        return GetLastError();
+
+    if (!WriteFile(pFH->hFile, pvBuf, cbBuf, &cbWritten, NULL))
+        return GetLastError();
+    if (cbWritten != cbBuf)
+        return -1;
+
+#else
+    ssize_t cbWritten;
+    if (lseek(pFH->fd, off, SEEK_SET) == -1)
+        return errno;
+    errno = 0;
+    cbWritten = write(pFH->fd, pvBuf, cbBuf);
+    if ((size_t)cbWritten != cbBuf)
+        return errno ? errno : EIO;
+#endif
+    return kDepDbFHUpdateSize(pFH);
+}
+
+
+/**
+ * Creates a memory mapping of the file.
+ *
+ * @returns 0 on success. Some non-zero native error code on failure.
+ *
+ * @param   pFH         The file handle structure.
+ * @param   ppvMap      Where to return the map address.
+ */
+static int  kDepDbFHMap(KDEPDBFH *pFH, void **ppvMap)
+{
+#if K_OS == K_OS_WINDOWS
+    *ppvMap = NULL;
+    return -1;
+#else
+    *ppvMap = mmap(NULL, pFH->cb, PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, pFH->fd, 0);
+    if (*ppvMap == (void *)-1)
+    {
+        *ppvMap = NULL;
+        return errno;
+    }
+#endif
+    return 0;
+}
+
+
+/**
+ * Flushes and destroys a memory of the file.
+ *
+ * @returns 0 on success. Some non-zero native error code on failure.
+ *
+ * @param   pFH         The file handle structure.
+ * @param   ppvMap      The pointer to the mapping pointer. This will be set to
+ *                      NULL on success.
+ */
+static int  kDepDbFHUnmap(KDEPDBFH *pFH, void **ppvMap)
+{
+#if K_OS == K_OS_WINDOWS
+    return -1;
+#else
+    if (msync(*ppvMap, pFH->cb, MS_SYNC) == -1)
+        return errno;
+    if (munmap(*ppvMap, pFH->cb) == -1)
+        return errno;
+    *ppvMap = NULL;
+#endif
+    return 0;
+}
+
+
+/**
+ * Grows the memory mapping of the file.
+ *
+ * The content of the new space is undefined.
+ *
+ * @returns 0 on success. Some non-zero native error code on failure.
+ *
+ * @param   pFH         The file handle structure.
+ * @param   cbNew       The new mapping size.
+ * @param   ppvMap      The pointer to the mapping pointer. This may change and
+ *                      may be set to NULL on failure.
+ */
+static int  kDepDbFHGrow(KDEPDBFH *pFH, KSIZE cbNew, void **ppvMap)
+{
+#if K_OS == K_OS_WINDOWS
+    return -1;
+#else
+    if ((KU32)cbNew != cbNew)
+        return ERANGE;
+    if (cbNew <= pFH->cb)
+        return 0;
+
+    if (munmap(*ppvMap, pFH->cb) == -1)
+        return errno;
+    *ppvMap = NULL;
+
+    pFH->cb = cbNew;
+    return kDepDbFHMap(pFH, ppvMap);
+#endif
+}
+
+
+/** Macro for reading an potentially unaligned 16-bit word from a string. */
+# if K_ARCH == K_ARCH_AMD64 \
+  || K_ARCH == K_ARCH_X86_32 \
+  || K_ARCH == K_ARCH_X86_16
+#  define kDepDbHashString_get_unaligned_16bits(ptr)   ( *((const KU16 *)(ptr)) )
+# elif K_ENDIAN == K_ENDIAN_LITTLE
+#  define kDepDbHashString_get_unaligned_16bits(ptr)   (  (((const KU8 *)(ptr))[0]) \
+                                                        | (((const KU8 *)(ptr))[1] << 8) )
+# else
+#  define kDepDbHashString_get_unaligned_16bits(ptr)   (  (((const KU8 *)(ptr))[0] << 8) \
+                                                        | (((const KU8 *)(ptr))[1]) )
+# endif
+
+
+/**
+ * Hash a string.
+ *
+ * @returns Hash value.
+ *
+ * @param   pszString       The string to hash.
+ * @param   cchString       How much to hash.
+ */
+static KU32 kDepDbHashString(const char *pszString, size_t cchString)
+{
+    /*
+     * Paul Hsieh hash SuperFast function:
+     * http://www.azillionmonkeys.com/qed/hash.html
+     */
+    /** @todo A path for well aligned data should be added to speed up execution on
+     *        alignment sensitive systems. */
+    unsigned int uRem;
+    KU32 uHash;
+    KU32 uTmp;
+
+    assert(sizeof(KU8) == sizeof(char));
+
+    /* main loop, walking on 2 x KU16 */
+    uHash = cchString;
+    uRem  = cchString & 3;
+    cchString >>= 2;
+    while (cchString > 0)
+    {
+        uHash      += kDepDbHashString_get_unaligned_16bits(pszString);
+        uTmp        = (kDepDbHashString_get_unaligned_16bits(pszString + 2) << 11) ^ uHash;
+        uHash       = (uHash << 16) ^ uTmp;
+        pszString  += 2 * sizeof(KU16);
+        uHash      += uHash >> 11;
+        cchString--;
+    }
+
+    /* the remainder */
+    switch (uRem)
+    {
+        case 3:
+            uHash += kDepDbHashString_get_unaligned_16bits(pszString);
+            uHash ^= uHash << 16;
+            uHash ^= pszString[sizeof(KU16)] << 18;
+            uHash += uHash >> 11;
+            break;
+        case 2:
+            uHash += kDepDbHashString_get_unaligned_16bits(pszString);
+            uHash ^= uHash << 11;
+            uHash += uHash >> 17;
+            break;
+        case 1:
+            uHash += *pszString;
+            uHash ^= uHash << 10;
+            uHash += uHash >> 1;
+            break;
+    }
+
+    /* force "avalanching" of final 127 bits. */
+    uHash ^= uHash << 3;
+    uHash += uHash >> 5;
+    uHash ^= uHash << 4;
+    uHash += uHash >> 17;
+    uHash ^= uHash << 25;
+    uHash += uHash >> 6;
+
+    return uHash;
+}
+
+
+/***
+ * Looks up a string in the string table.
+ *
+ * @returns The string table index.
+ * @retval  KDEPDBG_STRTAB_IDX_NOT_FOUND is not found.
+ * @retval  KDEPDBG_STRTAB_IDX_ERROR on internal inconsistency.
+ *
+ * @param   pStrTab         The string table.
+ * @param   pszString       The string.
+ * @param   cchStringIn     The string length.
+ * @param   uHash           The hash of the string.
+ */
+static KU32 kDepDbStrTabLookupHashed(KDEPDBINTSTRTAB const *pStrTab, const char *pszString, size_t cchStringIn, KU32 uHash)
+{
+    KU32 const          cchString  = (KU32)cchStringIn;
+    KDEPDBHASH const   *pHash      = pStrTab->pHash;
+    KDEPDBSTRING const *paStrings  = &pStrTab->pStrTab->aStrings[0];
+    KU32 const          iStringEnd = K_LE2H_U32(pStrTab->pStrTab->iStringEnd);
+    KU32                iHash;
+
+    /* sanity */
+    if (cchString != cchStringIn)
+        return KDEPDBG_STRTAB_IDX_NOT_FOUND;
+
+    /*
+     * Hash lookup of the string.
+     */
+    iHash = uHash % pHash->cEntries;
+    for (;;)
+    {
+        KU32 iString = K_LE2H_U32(pHash->auEntries[iHash]);
+        if (iString < iStringEnd)
+        {
+            KDEPDBSTRING const *pString = &paStrings[iString];
+            if (    K_LE2H_U32(pString->uHash)     == uHash
+                &&  K_LE2H_U32(pString->cchString) == cchString
+                &&  !memcmp(pString->szString, pszString, cchString))
+                return iString;
+        }
+        else if (iString == KDEPDBHASH_UNUSED)
+            return KDEPDBG_STRTAB_IDX_NOT_FOUND;
+        else if (iString != KDEPDBHASH_DELETED)
+            return KDEPDBG_STRTAB_IDX_ERROR;
+
+        /* advance */
+        iHash = (iHash + 1) % pHash->cEntries;
+    }
+}
+
+
+/**
+ * Doubles the hash table size and rehashes it.
+ *
+ * @returns 0 on success, -1 on failure.
+ * @param   pStrTab         The string table.
+ * @todo    Rebuild from string table, we'll be accessing it anyways.
+ */
+static int kDepDbStrTabReHash(KDEPDBINTSTRTAB *pStrTab)
+{
+    KDEPDBSTRING const *paStrings   = &pStrTab->pStrTab->aStrings[0];
+    KU32 const          iStringEnd  = K_LE2H_U32(pStrTab->pStrTab->iStringEnd);
+    KDEPDBHASH         *pHash       = pStrTab->pHash;
+    KDEPDBHASH          HashHdr     = *pHash;
+    KU32               *pauNew;
+    KU32                cEntriesNew;
+    KU32                i;
+
+    /*
+     * Calc the size of the new hash table.
+     */
+    if (pHash->cEntries >= KU32_C(0x80000000))
+        return -1;
+    cEntriesNew = 1024;
+    while (cEntriesNew <= pHash->cEntries)
+        cEntriesNew <<= 1;
+
+    /*
+     * Allocate and initialize an empty hash table in memory.
+     */
+    pauNew = kDepDbAlloc(cEntriesNew * sizeof(KU32));
+    if (!pauNew)
+        return -1;
+    i = cEntriesNew;
+    while (i-- > 0)
+        pauNew[i] = KDEPDBHASH_UNUSED;
+
+    /*
+     * Popuplate the new table.
+     */
+    HashHdr.cEntries     = K_LE2H_U32(cEntriesNew);
+    HashHdr.cCollisions  = 0;
+    HashHdr.cUsedEntries = 0;
+    i = pHash->cEntries;
+    while (i-- > 0)
+    {
+        KU32 iString = K_LE2H_U32(pHash->auEntries[i]);
+        if (iString < iStringEnd)
+        {
+            KU32 iHash = (paStrings[iString].uHash % cEntriesNew);
+            if (pauNew[iHash] != K_H2LE_U32(KDEPDBHASH_UNUSED))
+            {
+                do
+                {
+                    iHash = (iHash + 1) % cEntriesNew;
+                    HashHdr.cCollisions++;
+                } while (pauNew[iHash] != K_H2LE_U32(KDEPDBHASH_UNUSED));
+            }
+            pauNew[iHash] = iString;
+            HashHdr.cUsedEntries++;
+        }
+        else if (   iString != KDEPDBHASH_UNUSED
+                 && iString != KDEPDBHASH_DELETED)
+        {
+            kDepDbFree(pauNew);
+            return -1;
+        }
+    }
+    HashHdr.cCollisions  = K_H2LE_U32(HashHdr.cCollisions);
+    HashHdr.cUsedEntries = K_H2LE_U32(HashHdr.cUsedEntries);
+
+    /*
+     * Unmap the hash, write the new hash table and map it again.
+     */
+    if (!kDepDbFHUnmap(&pStrTab->hHash, (void **)&pStrTab->pHash))
+    {
+        if (   !kDepDbFHWriteAt(&pStrTab->hHash, 0, &HashHdr, K_OFFSETOF(KDEPDBHASH, auEntries))
+            && !kDepDbFHWriteAt(&pStrTab->hHash, K_OFFSETOF(KDEPDBHASH, auEntries), pauNew, sizeof(pauNew[0]) * cEntriesNew))
+        {
+            kDepDbFree(pauNew);
+            pauNew = NULL;
+            if (!kDepDbFHMap(&pStrTab->hHash, (void **)&pStrTab->pHash))
+                return 0;
+        }
+        else
+            kDepDbFHWriteAt(&pStrTab->hHash, 0, "\0\0\0\0", 4); /* file is screwed, trash the magic. */
+    }
+
+    kDepDbFree(pauNew);
+    return -1;
+}
+
+
+/**
+ * Add a string to the string table.
+ *
+ * If already in the table, the index of the existing entry is returned.
+ *
+ * @returns String index on success,
+ * @retval  KDEPDBG_STRTAB_IDX_ERROR on I/O and inconsistency errors.
+ *
+ * @param   pStrTab     The string table.
+ * @param   pszString   The string to add.
+ * @param   cchStringIn The length of the string.
+ * @param   uHash       The hash of the string.
+ */
+static KU32 kDepDbStrTabAddHashed(KDEPDBINTSTRTAB *pStrTab, const char *pszString, size_t cchStringIn, KU32 uHash)
+{
+    KU32 const          cchString   = (KU32)cchStringIn;
+    KDEPDBHASH         *pHash       = pStrTab->pHash;
+    KDEPDBSTRING       *paStrings   = &pStrTab->pStrTab->aStrings[0];
+    KU32 const          iStringEnd  = K_LE2H_U32(pStrTab->pStrTab->iStringEnd);
+    KU32                iInsertAt   = KDEPDBHASH_UNUSED;
+    KU32                cCollisions = 0;
+    KU32                iHash;
+    KU32                iString;
+    KU32                cEntries;
+    KDEPDBSTRING       *pNewString;
+
+    /* sanity */
+    if (cchString != cchStringIn)
+        return KDEPDBG_STRTAB_IDX_NOT_FOUND;
+
+    /*
+     * Hash lookup of the string, finding either an existing copy or where to
+     * insert the new string at in the hash table.
+     */
+    iHash = uHash % pHash->cEntries;
+    for (;;)
+    {
+        iString = K_LE2H_U32(pHash->auEntries[iHash]);
+        if (iString < iStringEnd)
+        {
+            KDEPDBSTRING const *pString = &paStrings[iString];
+            if (    K_LE2H_U32(pString->uHash)     == uHash
+                &&  K_LE2H_U32(pString->cchString) == cchString
+                &&  !memcmp(pString->szString, pszString, cchString))
+                return iString;
+        }
+        else
+        {
+            if (iInsertAt == KDEPDBHASH_UNUSED)
+                iInsertAt = iHash;
+            if (iString == KDEPDBHASH_UNUSED)
+                break;
+            if (iString != KDEPDBHASH_DELETED)
+                return KDEPDBG_STRTAB_IDX_ERROR;
+        }
+
+        /* advance */
+        cCollisions++;
+        iHash = (iHash + 1) % pHash->cEntries;
+    }
+
+    /*
+     * Add string to the string table.
+     * The string table file is grown in 256KB increments and ensuring at least 64KB unused new space.
+     */
+    cEntries = cchString + 1 <= sizeof(paStrings[0].szString)
+             ? 1
+             : (cchString + 1 - sizeof(paStrings[0].szString) + sizeof(KDEPDBSTRING) - 1) / sizeof(KDEPDBSTRING);
+    if (iStringEnd + cEntries > pStrTab->iStringAlloced)
+    {
+        KSIZE cbNewSize      = K_ALIGN_Z((iStringEnd + cEntries) * sizeof(KDEPDBSTRING) + 64*1024, 256*1024);
+        KU32  iStringAlloced = (pStrTab->hStrTab.cb - K_OFFSETOF(KDEPDBSTRTAB, aStrings)) / sizeof(KDEPDBSTRING);
+        if (    iStringAlloced <= pStrTab->iStringAlloced
+            ||  iStringAlloced >= KDEPDBG_STRTAB_IDX_END
+            ||  iStringAlloced >= KDEPDBHASH_END)
+            return KDEPDBG_STRTAB_IDX_ERROR;
+        if (kDepDbFHGrow(&pStrTab->hStrTab, cbNewSize, (void **)&pStrTab->pStrTab) != 0)
+            return KDEPDBG_STRTAB_IDX_ERROR;
+        pStrTab->iStringAlloced = iStringAlloced;
+        paStrings = &pStrTab->pStrTab->aStrings[0];
+    }
+
+    pNewString = &paStrings[iStringEnd];
+    pNewString->uHash     = K_H2LE_U32(uHash);
+    pNewString->cchString = K_H2LE_U32(cchString);
+    memcpy(&pNewString->szString, pszString, cchString);
+    pNewString->szString[cchString] = '\0';
+
+    pStrTab->pStrTab->iStringEnd = K_H2LE_U32(iStringEnd + cEntries);
+
+    /*
+     * Insert hash table entry, rehash it if necessary.
+     */
+    pHash->auEntries[iInsertAt] = K_H2LE_U32(iStringEnd);
+    pHash->cUsedEntries = K_H2LE_U32(K_LE2H_U32(pHash->cUsedEntries) + 1);
+    pHash->cCollisions  = K_H2LE_U32(K_LE2H_U32(pHash->cCollisions)  + cCollisions);
+    if (    K_LE2H_U32(pHash->cUsedEntries) > K_LE2H_U32(pHash->cEntries) / 3 * 2
+        &&  kDepDbStrTabReHash(pStrTab) != 0)
+        return KDEPDBG_STRTAB_IDX_ERROR;
+
+    return iStringEnd;
+}
+
+
+/** Wrapper for kDepDbStrTabLookupHashed.  */
+static KU32 kDepDbStrTabLookupN(KDEPDBINTSTRTAB const *pStrTab, const char *pszString, size_t cchString)
+{
+    return kDepDbStrTabLookupHashed(pStrTab, pszString, cchString, kDepDbHashString(pszString, cchString));
+}
+
+
+/** Wrapper for kDepDbStrTabAddHashed.  */
+static KU32 kDepDbStrTabAddN(KDEPDBINTSTRTAB *pStrTab, const char *pszString, size_t cchString)
+{
+    return kDepDbStrTabAddHashed(pStrTab, pszString, cchString, kDepDbHashString(pszString, cchString));
+}
+
+
+/** Wrapper for kDepDbStrTabLookupHashed.  */
+static KU32 kDepDbStrTabLookup(KDEPDBINTSTRTAB const *pStrTab, const char *pszString)
+{
+    return kDepDbStrTabLookupN(pStrTab, pszString, strlen(pszString));
+}
+
+
+/** Wrapper for kDepDbStrTabAddHashed.  */
+static KU32 kDepDbStrTabAdd(KDEPDBINTSTRTAB *pStrTab, const char *pszString)
+{
+    return kDepDbStrTabAddN(pStrTab, pszString, strlen(pszString));
+}
+
+
+/**
+ * Opens the string table files, creating them if necessary.
+ */
+static int kDepDbStrTabInit(KDEPDBINTSTRTAB *pStrTab, const char *pszFilenameBase)
+{
+    size_t  cchFilenameBase = strlen(pszFilenameBase);
+    char    szPath[4096];
+    int     rc;
+    KBOOL   fNew;
+
+    /* Basic member init, so kDepDbStrTabTerm always works. */
+    pStrTab->pHash = NULL;
+    kDepDbFHInit(&pStrTab->hHash);
+    pStrTab->pStrTab = NULL;
+    kDepDbFHInit(&pStrTab->hStrTab);
+    pStrTab->iStringAlloced = 0;
+
+    /* check the length. */
+    if (cchFilenameBase + sizeof(".strtab.hash") > sizeof(szPath))
+        return -1;
+
+    /*
+     * Open the string table first.
+     */
+    memcpy(szPath, pszFilenameBase, cchFilenameBase);
+    memcpy(&szPath[cchFilenameBase], ".strtab", sizeof(".strtab"));
+    rc = kDepDbFHOpen(&pStrTab->hStrTab, szPath, K_TRUE, &fNew);
+
+
+    return -1;
+}
+
diff --git a/src/kmk/kmk_cc_exec.c b/src/kmk/kmk_cc_exec.c
new file mode 100644
index 0000000..6f60477
--- /dev/null
+++ b/src/kmk/kmk_cc_exec.c
@@ -0,0 +1,7613 @@
+#ifdef CONFIG_WITH_COMPILER
+/* $Id: kmk_cc_exec.c 3233 2018-09-24 10:39:36Z bird $ */
+/** @file
+ * kmk_cc - Make "Compiler".
+ */
+
+/*
+ * Copyright (c) 2015-2017 knut st. osmundsen <bird-kBuild-spam-xiiv@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "makeint.h"
+
+#include "dep.h"
+#include "variable.h"
+#include "rule.h"
+#include "debug.h"
+#include "hash.h"
+#include <ctype.h>
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#include <stdarg.h>
+#include <assert.h>
+#include "k/kDefs.h"
+#include "k/kTypes.h"
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/** @def KMK_CC_WITH_STATS
+ * Enables the collection of extra statistics. */
+#ifndef KMK_CC_WITH_STATS
+# ifdef CONFIG_WITH_MAKE_STATS
+#  define KMK_CC_WITH_STATS
+# endif
+#endif
+
+/** @def KMK_CC_STRICT
+ * Indicates whether assertions and other checks are enabled. */
+#ifndef KMK_CC_STRICT
+# ifndef NDEBUG
+#  define KMK_CC_STRICT
+# endif
+#endif
+
+#ifdef KMK_CC_STRICT
+# ifdef _MSC_VER
+#  define KMK_CC_ASSERT(a_TrueExpr)         do { if (!(a_TrueExpr)) __debugbreak(); } while (0)
+# elif defined(__GNUC__) && (defined(KBUILD_ARCH_X86) || defined(KBUILD_ARCH_AMD64))
+#  define KMK_CC_ASSERT(a_TrueExpr)         do { if (!(a_TrueExpr)) __asm__ __volatile__("int3;nop"); } while (0)
+# else
+#  define KMK_CC_ASSERT(a_TrueExpr)         assert(a_TrueExpr)
+# endif
+#else
+# define KMK_CC_ASSERT(a_TrueExpr)          do {} while (0)
+#endif
+#define KMK_CC_ASSERT_ALIGNED(a_uValue, a_uAlignment) \
+    KMK_CC_ASSERT( ((a_uValue) & ((a_uAlignment) - 1)) == 0 )
+
+
+/** @def KMK_CC_OFFSETOF
+ * Offsetof for simple stuff.  */
+#if defined(__GNUC__)
+# define KMK_CC_OFFSETOF(a_Struct, a_Member)        __builtin_offsetof(a_Struct, a_Member)
+#else
+# define KMK_CC_OFFSETOF(a_Struct, a_Member)        ( (uintptr_t)&( ((a_Struct *)(void *)0)->a_Member) )
+#endif
+
+/** def KMK_CC_SIZEOF_MEMBER   */
+#define KMK_CC_SIZEOF_MEMBER(a_Struct, a_Member)    ( sizeof( ((a_Struct *)(void *)0x1000)->a_Member) )
+
+/** @def KMK_CC_SIZEOF_VAR_STRUCT
+ * Size of a struct with a variable sized array as the final member. */
+#define KMK_CC_SIZEOF_VAR_STRUCT(a_Struct, a_FinalArrayMember, a_cArray) \
+    ( KMK_CC_OFFSETOF(a_Struct, a_FinalArrayMember) + KMK_CC_SIZEOF_MEMBER(a_Struct, a_FinalArrayMember) * (a_cArray) )
+
+
+
+/** @def KMK_CC_STATIC_ASSERT_EX
+ * Compile time assertion with text.
+ */
+#ifdef _MSC_VER_
+# if _MSC_VER >= 1600
+#  define KMK_CC_STATIC_ASSERT_EX(a_Expr, a_szExpl) static_assert(a_Expr, a_szExpl)
+# else
+#  define KMK_CC_STATIC_ASSERT_EX(a_Expr, a_szExpl) typedef int RTASSERTVAR[(a_Expr) ? 1 : 0]
+# endif
+#elif defined(__GNUC__) && defined(__GXX_EXPERIMENTAL_CXX0X__)
+# define KMK_CC_STATIC_ASSERT_EX(a_Expr, a_szExpl)     static_assert(a_Expr, a_szExpl)
+#elif !defined(__GNUC__) && !defined(__IBMC__) && !defined(__IBMCPP__)
+# define KMK_CC_STATIC_ASSERT_EX(a_Expr, a_szExpl)  typedef int KMK_CC_STATIC_ASSERT_EX_TYPE[(a_Expr) ? 1 : 0]
+#else
+# define KMK_CC_STATIC_ASSERT_EX(a_Expr, a_szExpl)  extern int KMK_CC_STATIC_ASSERT_EX_VAR[(a_Expr) ? 1 : 0]
+extern int KMK_CC_STATIC_ASSERT_EX_VAR[1];
+#endif
+/** @def KMK_CC_STATIC_ASSERT
+ * Compile time assertion, simple variant.
+ */
+#define KMK_CC_STATIC_ASSERT(a_Expr)                KMK_CC_STATIC_ASSERT_EX(a_Expr, #a_Expr)
+
+
+/** Aligns a size for the block allocator. */
+#define KMK_CC_BLOCK_ALIGN_SIZE(a_cb)               ( ((a_cb) + (sizeof(void *) - 1U)) & ~(uint32_t)(sizeof(void *) - 1U) )
+
+/** How to declare a no-return function.
+ * Place between scope (if any) and return type.  */
+#ifdef _MSC_VER
+# define KMK_CC_FN_NO_RETURN                        __declspec(noreturn)
+#elif defined(__GNUC__)
+# define KMK_CC_FN_NO_RETURN                        __attribute__((__noreturn__))
+#endif
+
+/** Block allocator logging.   */
+//#define KMK_CC_BLOCK_LOGGING_ENABLED
+#ifdef KMK_CC_BLOCK_LOGGING_ENABLED
+# define KMK_CC_BLOCK_DPRINTF_UNPACK(...)           __VA_ARGS__
+# define KMK_CC_BLOCK_DPRINTF(a)                    fprintf(stderr, KMK_CC_BLOCK_DPRINTF_UNPACK a)
+#else
+# define KMK_CC_BLOCK_DPRINTF(a)                    do { } while (0)
+#endif
+
+
+/** @defgroup grp_kmk_cc_evalprog Makefile Evaluation
+ * @{
+ */
+#define KMK_CC_EVAL_LOGGING_ENABLED
+#ifdef KMK_CC_EVAL_LOGGING_ENABLED
+# define KMK_CC_EVAL_DPRINTF_UNPACK(...)            __VA_ARGS__
+# define KMK_CC_EVAL_DPRINTF(a)                     fprintf(stderr, KMK_CC_EVAL_DPRINTF_UNPACK a)
+#else
+# define KMK_CC_EVAL_DPRINTF(a)                     do { } while (0)
+#endif
+
+/** @name KMK_CC_EVAL_QUALIFIER_XXX - Variable qualifiers.
+ * @{ */
+#define KMK_CC_EVAL_QUALIFIER_LOCAL         1
+#define KMK_CC_EVAL_QUALIFIER_EXPORT        2
+#define KMK_CC_EVAL_QUALIFIER_OVERRIDE      4
+#define KMK_CC_EVAL_QUALIFIER_PRIVATE       8
+/** @} */
+
+/** Eval: Max makefile size we accept as input (in bytes). */
+#define KMK_CC_EVAL_MAX_COMPILE_SIZE        (16*1024*1024)
+
+/** Eval: Max nesting depth of makefile conditionals.
+ * Affects stack usage in kmk_cc_eval_compile_worker.  */
+#define KMK_CC_EVAL_MAX_IF_DEPTH            32
+/** Eval: Maximum number of escaped end of line sequences to track.
+ * Affects stack usage in kmk_cc_eval_compile_worker, but not the actual
+ * number of consequtive escaped newlines in the input file/variable. */
+#define KMK_CC_EVAL_MAX_ESC_EOLS            2
+
+/** Minimum keyword length. */
+#define KMK_CC_EVAL_KEYWORD_MIN             2
+/** Maximum keyword length. */
+#define KMK_CC_EVAL_KEYWORD_MAX             16
+
+/** @name KMK_CC_EVAL_CH_XXX - flags found in g_abEvalCcChars.
+ * @{ */
+/** Normal character, nothing special. */
+#define KMK_CC_EVAL_CH_NORMAL                       UINT16_C(0)
+/** Blank character. */
+#define KMK_CC_EVAL_CH_BLANK                        UINT16_C(1)
+#define KMK_CC_EVAL_IS_BLANK(a_ch)                  (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & KMK_CC_EVAL_CH_BLANK)
+/** Space character. */
+#define KMK_CC_EVAL_CH_SPACE                        UINT16_C(2)
+#define KMK_CC_EVAL_IS_SPACE(a_ch)                  (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & KMK_CC_EVAL_CH_SPACE)
+/** Space character or potential EOL escape backslash. */
+#define KMK_CC_EVAL_CH_SPACE_OR_BACKSLASH           UINT16_C(4)
+#define KMK_CC_EVAL_IS_SPACE_OR_BACKSLASH(a_ch)     (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & KMK_CC_EVAL_CH_SPACE_OR_BACKSLASH)
+/** Anything we need to take notice of when parsing something could be a
+ * variable name or a recipe.
+ * All space characters, backslash (EOL escape), variable expansion dollar,
+ * variable assignment operator chars, recipe colon and recipe percent. */
+#define KMK_CC_EVAL_CH_SPACE_VAR_OR_RECIPE          UINT16_C(8)
+#define KMK_CC_EVAL_IS_SPACE_VAR_OR_RECIPE(a_ch)    (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & KMK_CC_EVAL_CH_SPACE_VAR_OR_RECIPE)
+/** Dollar character (possible variable expansion). */
+#define KMK_CC_EVAL_CH_DOLLAR                       UINT16_C(16)
+#define KMK_CC_EVAL_IS_DOLLAR(a_ch)                 (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & KMK_CC_EVAL_CH_DOLLAR)
+/** Dollar character (possible variable expansion). */
+#define KMK_CC_EVAL_CH_BACKSLASH                    UINT16_C(32)
+#define KMK_CC_EVAL_IS_BACKSLASH(a_ch)              (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & KMK_CC_EVAL_CH_BACKSLASH)
+/** Possible EOL character. */
+#define KMK_CC_EVAL_CH_EOL_CANDIDATE                UINT16_C(64)
+#define KMK_CC_EVAL_IS_EOL_CANDIDATE(a_ch)          (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & KMK_CC_EVAL_CH_EOL_CANDIDATE)
+/** First character in a keyword. */
+#define KMK_CC_EVAL_CH_1ST_IN_KEYWORD               UINT16_C(128)
+#define KMK_CC_EVAL_IS_1ST_IN_KEYWORD(a_ch)         (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & KMK_CC_EVAL_CH_1ST_IN_KEYWORD)
+/** Second character in a keyword. */
+#define KMK_CC_EVAL_CH_2ND_IN_KEYWORD               UINT16_C(256)
+#define KMK_CC_EVAL_IS_2ND_IN_KEYWORD(a_ch)         (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & KMK_CC_EVAL_CH_2ND_IN_KEYWORD)
+/** First character in a variable qualifier keyword or 'define'. */
+#define KMK_CC_EVAL_CH_1ST_IN_VARIABLE_KEYWORD      UINT16_C(512)
+#define KMK_CC_EVAL_IS_1ST_IN_VARIABLE_KEYWORD(a_ch) (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & KMK_CC_EVAL_CH_1ST_IN_VARIABLE_KEYWORD)
+/** Used when parsing variable names, looking for the end of a nested
+ *  variable reference.  Matches parentheses and backslash (escaped eol). */
+#define KMK_CC_EVAL_CH_PAREN_OR_SLASH               UINT16_C(1024)
+#define KMK_CC_EVAL_IS_PAREN_OR_SLASH(a_ch)         (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & KMK_CC_EVAL_CH_PAREN_OR_SLASH)
+/** Used when parsing ifeq/ifneq (,) sequences.
+ * Matches parentheses, comma and dollar (for non-plain string detection). */
+#define KMK_CC_EVAL_CH_PAREN_COMMA_OR_DOLLAR        UINT16_C(2048)
+#define KMK_CC_EVAL_IS_PAREN_COMMA_OR_DOLLAR(a_ch)  (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & KMK_CC_EVAL_CH_PAREN_COMMA_OR_DOLLAR)
+
+/** Test of space or dollar characters. */
+#define KMK_CC_EVAL_IS_SPACE_OR_DOLLAR(a_ch)        (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & (KMK_CC_EVAL_CH_SPACE | KMK_CC_EVAL_CH_DOLLAR))
+/** Test of space, dollar or backslash (possible EOL escape) characters. */
+#define KMK_CC_EVAL_IS_SPACE_DOLLAR_OR_SLASH(a_ch)  (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & (KMK_CC_EVAL_CH_SPACE | KMK_CC_EVAL_CH_DOLLAR | KMK_CC_EVAL_CH_BACKSLASH))
+/** Test of space, dollar, backslash (possible EOL escape) or variable
+ * assingment characters. */
+#define KMK_CC_EVAL_IS_SPACE_DOLLAR_SLASH_OR_ASSIGN(a_ch)   \
+    (KMK_CC_EVAL_BM_GET(g_abEvalCcChars, a_ch) & (KMK_CC_EVAL_CH_SPACE | KMK_CC_EVAL_CH_SPACE_VAR_OR_RECIPE | KMK_CC_EVAL_CH_DOLLAR))
+/** @} */
+
+/** Sets a bitmap entry.
+ * @param   a_abBitmap      Typically g_abEvalCcChars.
+ * @param   a_ch            The character to set.
+ * @param   a_uVal          The value to OR in.  */
+#define KMK_CC_EVAL_BM_OR(g_abBitmap, a_ch, a_uVal) do { (g_abBitmap)[(unsigned char)(a_ch)] |= (a_uVal); } while (0)
+
+/** Gets a bitmap entry.
+ * @returns The value corresponding to @a a_ch.
+ * @param   a_abBitmap      Typically g_abEvalCcChars.
+ * @param   a_ch            The character to set. */
+#define KMK_CC_EVAL_BM_GET(g_abBitmap, a_ch)        ( (g_abBitmap)[(unsigned char)(a_ch)] )
+
+/** @} */
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+/**
+ * Block of instructions.
+ *
+ * To avoid wasting space on "next" pointers, as well as a lot of time walking
+ * these chains when destroying programs, we work with blocks of instructions.
+ */
+typedef struct kmk_cc_block
+{
+    /** The pointer to the next block (LIFO). */
+    struct kmk_cc_block        *pNext;
+    /** The size of this block. */
+    uint32_t                    cbBlock;
+    /** The offset of the next free byte in the block.  When set to cbBlock the
+     *  block is 100% full. */
+    uint32_t                    offNext;
+} KMKCCBLOCK;
+typedef KMKCCBLOCK *PKMKCCBLOCK;
+
+
+/** @defgroup grp_kmk_cc_exp   String Expansion
+ * @{*/
+
+/**
+ * String expansion statistics.
+ */
+typedef struct KMKCCEXPSTATS
+{
+    /** Recent average size. */
+    uint32_t                    cchAvg;
+} KMKCCEXPSTATS;
+typedef KMKCCEXPSTATS *PKMKCCEXPSTATS;
+
+/**
+ * Expansion instructions.
+ */
+typedef enum KMKCCEXPINSTR
+{
+    /** Copy a plain string. */
+    kKmkCcExpInstr_CopyString = 0,
+    /** Insert an expanded variable value, which name we already know.  */
+    kKmkCcExpInstr_PlainVariable,
+    /** Insert an expanded variable value, the name is dynamic (sub prog). */
+    kKmkCcExpInstr_DynamicVariable,
+    /** Insert an expanded variable value, which name we already know, doing
+     * search an replace on a string. */
+    kKmkCcExpInstr_SearchAndReplacePlainVariable,
+    /** Insert the output of function that requires no argument expansion. */
+    kKmkCcExpInstr_PlainFunction,
+    /** Insert the output of function that requires dynamic expansion of one ore
+     * more arguments.  (Dynamic is perhaps not such a great name, but whatever.) */
+    kKmkCcExpInstr_DynamicFunction,
+    /** Jump to a new instruction block. */
+    kKmkCcExpInstr_Jump,
+    /** We're done, return.  Has no specific structure. */
+    kKmkCcExpInstr_Return,
+    /** The end of valid instructions (exclusive). */
+    kKmkCcExpInstr_End
+} KMKCCEXPINSTR;
+
+/** Instruction core. */
+typedef struct kmk_cc_exp_core
+{
+    /** The instruction opcode number (KMKCCEXPINSTR). */
+    KMKCCEXPINSTR           enmOpcode;
+} KMKCCEXPCORE;
+typedef KMKCCEXPCORE *PKMKCCEXPCORE;
+
+/**
+ * String expansion subprogram.
+ */
+#pragma pack(1) /* save some precious bytes */
+typedef struct kmk_cc_exp_subprog
+{
+    /** Pointer to the first instruction. */
+    PKMKCCEXPCORE           pFirstInstr;
+    /** Statistics. */
+    KMKCCEXPSTATS           Stats;
+} KMKCCEXPSUBPROG;
+#pragma pack()
+typedef KMKCCEXPSUBPROG *PKMKCCEXPSUBPROG;
+KMK_CC_STATIC_ASSERT(sizeof(KMKCCEXPSUBPROG) == 12 || sizeof(void *) != 8);
+
+
+/**
+ * String expansion subprogram or plain string.
+ */
+#pragma pack(1) /* save some precious bytes */
+typedef struct kmk_cc_exp_subprog_or_string
+{
+    /** Either a plain string pointer or a subprogram.   */
+    union
+    {
+        /** Subprogram for expanding this argument. */
+        KMKCCEXPSUBPROG     Subprog;
+        /** Pointer to the plain string. */
+        struct
+        {
+            /** Pointer to the string. */
+            const char     *psz;
+            /** String length. */
+            uint32_t        cch;
+        } Plain;
+    } u;
+    /** Set if subprogram (u.Subprog), clear if plain string (u.Plain). */
+    uint8_t                 fSubprog;
+    /** Set if the plain string is kept in the variable_strcache.
+     * @remarks Here rather than in u.Plain to make use of alignment padding. */
+    uint8_t                 fPlainIsInVarStrCache;
+    /** Context/user specific. */
+    uint8_t                 bUser;
+    /** Context/user specific #2. */
+    uint8_t                 bUser2;
+} KMKCCEXPSUBPROGORPLAIN;
+#pragma pack()
+typedef KMKCCEXPSUBPROGORPLAIN *PKMKCCEXPSUBPROGORPLAIN;
+KMK_CC_STATIC_ASSERT(  sizeof(void *) == 8
+                     ? sizeof(KMKCCEXPSUBPROGORPLAIN) == 16
+                     : sizeof(void *) == 4
+                     ? sizeof(KMKCCEXPSUBPROGORPLAIN) == 12
+                     : 1);
+
+/**
+ * kKmkCcExpInstr_CopyString instruction format.
+ */
+typedef struct kmk_cc_exp_copy_string
+{
+    /** The core instruction. */
+    KMKCCEXPCORE            Core;
+    /** The number of bytes to copy. */
+    uint32_t                cchCopy;
+    /** Pointer to the source string (not terminated at cchCopy). */
+    const char             *pachSrc;
+} KMKCCEXPCOPYSTRING;
+typedef KMKCCEXPCOPYSTRING *PKMKCCEXPCOPYSTRING;
+
+/**
+ * kKmkCcExpInstr_PlainVariable instruction format.
+ */
+typedef struct kmk_cc_exp_plain_variable
+{
+    /** The core instruction. */
+    KMKCCEXPCORE            Core;
+    /** The name of the variable (points into variable_strcache). */
+    const char             *pszName;
+} KMKCCEXPPLAINVAR;
+typedef KMKCCEXPPLAINVAR *PKMKCCEXPPLAINVAR;
+
+/**
+ * kKmkCcExpInstr_DynamicVariable instruction format.
+ */
+typedef struct kmk_cc_exp_dynamic_variable
+{
+    /** The core instruction. */
+    KMKCCEXPCORE            Core;
+    /** The subprogram that will give us the variable name. */
+    KMKCCEXPSUBPROG         Subprog;
+    /** Where to continue after this instruction.  (This is necessary since the
+     * instructions of the subprogram are emitted after this instruction.) */
+    PKMKCCEXPCORE           pNext;
+} KMKCCEXPDYNVAR;
+typedef KMKCCEXPDYNVAR *PKMKCCEXPDYNVAR;
+
+/**
+ * kKmkCcExpInstr_SearchAndReplacePlainVariable instruction format.
+ */
+typedef struct kmk_cc_exp_sr_plain_variable
+{
+    /** The core instruction. */
+    KMKCCEXPCORE            Core;
+    /** Where to continue after this instruction.  (This is necessary since the
+     * instruction contains string data of variable size.) */
+    PKMKCCEXPCORE           pNext;
+    /** The name of the variable (points into variable_strcache). */
+    const char             *pszName;
+    /** Search pattern.  */
+    const char             *pszSearchPattern;
+    /** Replacement pattern. */
+    const char             *pszReplacePattern;
+    /** Offset into pszSearchPattern of the significant '%' char. */
+    uint32_t                offPctSearchPattern;
+    /** Offset into pszReplacePattern of the significant '%' char. */
+    uint32_t                offPctReplacePattern;
+} KMKCCEXPSRPLAINVAR;
+typedef KMKCCEXPSRPLAINVAR *PKMKCCEXPSRPLAINVAR;
+
+/**
+ * Instruction format parts common to both kKmkCcExpInstr_PlainFunction and
+ * kKmkCcExpInstr_DynamicFunction.
+ */
+typedef struct kmk_cc_exp_function_core
+{
+    /** The core instruction. */
+    KMKCCEXPCORE            Core;
+    /** Number of arguments. */
+    uint32_t                cArgs; /**< @todo uint16_t to save 7 bytes of unecessary alignment padding on 64-bit systems, or merge fDirty into this member. */
+    /** Set if the function could be modifying the input arguments. */
+    uint8_t                 fDirty;
+    /** Where to continue after this instruction.  (This is necessary since the
+     * instructions are of variable size and may be followed by string data.) */
+    PKMKCCEXPCORE           pNext;
+    /**
+     * Pointer to the function table entry.
+     *
+     * @returns New variable buffer position.
+     * @param   pchDst      Current variable buffer position.
+     * @param   papszArgs   Pointer to a NULL terminated array of argument strings.
+     * @param   pszFuncName The name of the function being called.
+     */
+    char *                (*pfnFunction)(char *pchDst, char **papszArgs, const char *pszFuncName);
+    /** Pointer to the function name in the variable string cache. */
+    const char             *pszFuncName;
+} KMKCCEXPFUNCCORE;
+typedef KMKCCEXPFUNCCORE *PKMKCCEXPFUNCCORE;
+
+/**
+ * Instruction format for kKmkCcExpInstr_PlainFunction.
+ */
+typedef struct kmk_cc_exp_plain_function
+{
+    /** The bits comment to both plain and dynamic functions. */
+    KMKCCEXPFUNCCORE        FnCore;
+    /** Variable sized argument list (cArgs + 1 in length, last entry is NULL).
+     * The string pointers are to memory following this instruction, to memory in
+     * the next block or to memory in the variable / makefile we're working on
+     * (if zero terminated appropriately). */
+    const char             *apszArgs[1];
+} KMKCCEXPPLAINFUNC;
+typedef KMKCCEXPPLAINFUNC *PKMKCCEXPPLAINFUNC;
+/** Calculates the size of an KMKCCEXPPLAINFUNC structure with the apszArgs
+ * member holding a_cArgs entries plus a NULL terminator. */
+#define KMKCCEXPPLAINFUNC_SIZE(a_cArgs) KMK_CC_SIZEOF_VAR_STRUCT(KMKCCEXPDYNFUNC, aArgs, (a_cArgs) + 1)
+
+/**
+ * Instruction format for kKmkCcExpInstr_DynamicFunction.
+ */
+typedef struct kmk_cc_exp_dyn_function
+{
+    /** The bits comment to both plain and dynamic functions. */
+    KMKCCEXPFUNCCORE        FnCore;
+    /** Variable sized argument list (FnCore.cArgs in length).
+     * The subprograms / strings are allocated after this array (or in the next
+     * block). */
+    KMKCCEXPSUBPROGORPLAIN  aArgs[1];
+} KMKCCEXPDYNFUNC;
+typedef KMKCCEXPDYNFUNC *PKMKCCEXPDYNFUNC;
+/** Calculates the size of an KMKCCEXPDYNFUNC structure with the apszArgs
+ * member holding a_cArgs entries (no zero terminator). */
+#define KMKCCEXPDYNFUNC_SIZE(a_cArgs)  KMK_CC_SIZEOF_VAR_STRUCT(KMKCCEXPDYNFUNC, aArgs, a_cArgs)
+
+/**
+ * Instruction format for kKmkCcExpInstr_Jump.
+ */
+typedef struct kmk_cc_exp_jump
+{
+    /** The core instruction. */
+    KMKCCEXPCORE            Core;
+    /** Where to jump to (new instruction block, typically). */
+    PKMKCCEXPCORE           pNext;
+} KMKCCEXPJUMP;
+typedef KMKCCEXPJUMP *PKMKCCEXPJUMP;
+
+/**
+ * String expansion program.
+ */
+typedef struct kmk_cc_expandprog
+{
+    /** Pointer to the first instruction for this program. */
+    PKMKCCEXPCORE           pFirstInstr;
+    /** List of blocks for this program (LIFO). */
+    PKMKCCBLOCK             pBlockTail;
+    /** Statistics. */
+    KMKCCEXPSTATS           Stats;
+#ifdef KMK_CC_STRICT
+    /** The hash of the input string.  Used to check that we get all the change
+     * notifications we require. */
+    uint32_t                uInputHash;
+#endif
+    /** Reference count. */
+    uint32_t volatile       cRefs;
+} KMKCCEXPPROG;
+/** Pointer to a string expansion program. */
+typedef KMKCCEXPPROG *PKMKCCEXPPROG;
+
+/** @} */
+
+
+/** @addtogroup grp_kmk_cc_evalprog
+ * @{  */
+
+/** Pointer to a makefile evaluation program. */
+typedef struct kmk_cc_evalprog *PKMKCCEVALPROG;
+
+/**
+ * Makefile evaluation instructions.
+ */
+typedef enum KMKCCEVALINSTR
+{
+    /** Jump instruction - KMKCCEVALJUMP. */
+    kKmkCcEvalInstr_jump = 0,
+
+    /** [local|override|export] variable  = value - KMKCCEVALASSIGN.
+     * @note Can be used for target-specific variables. */
+    kKmkCcEvalInstr_assign_recursive,
+    /** [local|override|export] variable := value - KMKCCEVALASSIGN.
+     * Also: [local|override|export] define variable := ... endef
+     * @note Can be used for target-specific variables. */
+    kKmkCcEvalInstr_assign_simple,
+    /** [local|override|export] variable += value - KMKCCEVALASSIGN.
+     * Also: [local|override|export] define variable += ... endef
+     * @note Can be used for target-specific variables. */
+    kKmkCcEvalInstr_assign_append,
+    /** [local|override|export] variable <= value - KMKCCEVALASSIGN.
+     * Also: [local|override|export] define variable <= ... endef
+     * @note Can be used for target-specific variables. */
+    kKmkCcEvalInstr_assign_prepend,
+    /** [local|override|export] variable ?= value - KMKCCEVALASSIGN.
+     * @note Can be used for target-specific variables. */
+    kKmkCcEvalInstr_assign_if_new,
+    /* [local|override|export] define variable[=] ... endef - KMKCCEVALASSIGNDEF. */
+    kKmkCcEvalInstr_define_recursive,
+    /* [local|override|export] define variable ?= ... endef - KMKCCEVALASSIGNDEF. */
+    kKmkCcEvalInstr_define_if_new,
+
+    /** export variable1 [variable2...] - KMKCCEVALVARIABLES. */
+    kKmkCcEvalInstr_export,
+    /** unexport variable1 [variable2...] - KMKCCEVALVARIABLES. */
+    kKmkCcEvalInstr_unexport,
+    /** export - KMKCCEVALCORE. */
+    kKmkCcEvalInstr_export_all,
+    /** unexport - KMKCCEVALCORE. */
+    kKmkCcEvalInstr_unexport_all,
+    /** [local|override] undefine - KMKCCEVALVARIABLES. */
+    kKmkCcEvalInstr_undefine,
+
+    /** [else] ifdef variable - KMKCCEVALIFDEFPLAIN. */
+    kKmkCcEvalInstr_ifdef_plain,
+    /** [else] ifndef variable - KMKCCEVALIFDEFPLAIN. */
+    kKmkCcEvalInstr_ifndef_plain,
+    /** [else] ifdef variable - KMKCCEVALIFDEFDYNAMIC. */
+    kKmkCcEvalInstr_ifdef_dynamic,
+    /** [else] ifndef variable - KMKCCEVALIFDEFDYNAMIC. */
+    kKmkCcEvalInstr_ifndef_dynamic,
+    /** [else] ifeq (a,b) - KMKCCEVALIFEQ. */
+    kKmkCcEvalInstr_ifeq,
+    /** [else] ifeq (a,b) - KMKCCEVALIFEQ. */
+    kKmkCcEvalInstr_ifneq,
+    /** [else] if1of (set-a,set-b) - KMKCCEVALIF1OF. */
+    kKmkCcEvalInstr_if1of,
+    /** [else] ifn1of (set-a,set-b) - KMKCCEVALIF1OF. */
+    kKmkCcEvalInstr_ifn1of,
+    /** [else] if expr - KMKCCEVALIFEXPR. */
+    kKmkCcEvalInstr_if,
+
+    /** include file1 [file2...] - KMKCCEVALINCLUDE. */
+    kKmkCcEvalInstr_include,
+    /** [sinclude|-include] file1 [file2...]  - KMKCCEVALINCLUDE. */
+    kKmkCcEvalInstr_include_silent,
+    /** includedep file1 [file2...] - KMKCCEVALINCLUDE. */
+    kKmkCcEvalInstr_includedep,
+    /** includedep-queue file1 [file2...] - KMKCCEVALINCLUDE. */
+    kKmkCcEvalInstr_includedep_queue,
+    /** includedep-flush file1 [file2...] - KMKCCEVALINCLUDE. */
+    kKmkCcEvalInstr_includedep_flush,
+
+    /** Recipe without commands (defines dependencies) - KMKCCEVALRECIPE. */
+    kKmkCcEvalInstr_recipe_no_commands,
+    /** Recipe with commands (defines dependencies) - KMKCCEVALRECIPE. */
+    kKmkCcEvalInstr_recipe_start_normal,
+    /** Recipe with commands (defines dependencies) - KMKCCEVALRECIPE. */
+    kKmkCcEvalInstr_recipe_start_double_colon,
+    /** Recipe with commands (defines dependencies) - KMKCCEVALRECIPE. */
+    kKmkCcEvalInstr_recipe_start_pattern,
+    /** Adds more commands to the current recipe - KMKCCEVALRECIPECOMMANDS. */
+    kKmkCcEvalInstr_recipe_commands,
+    /** Special instruction for indicating the end of the recipe commands - KMKCCEVALCORE. */
+    kKmkCcEvalInstr_recipe_end,
+    /** Cancel previously defined pattern rule - KMKCCEVALRECIPE.  */
+    kKmkCcEvalInstr_recipe_cancel_pattern,
+
+/** @todo target variables. */
+
+    /** vpath pattern directories - KMKCCEVALVPATH. */
+    kKmkCcEvalInstr_vpath,
+    /** vpath pattern directories - KMKCCEVALVPATH. */
+    kKmkCcEvalInstr_vpath_clear_pattern,
+    /** vpath - KMKCCEVALCORE. */
+    kKmkCcEvalInstr_vpath_clear_all,
+
+    /** Make 'code' needing expanding and evaluation - KMKCCEVALEXPAND.
+     * @note That this could in theory be used to start a recipe.  This will be
+     *       detected by the interpreter and loading will for now fail.  A
+     *       strategy for implement support for it would require picking up
+     *       potential commands following the statements too. */
+    kKmkCcEvalInstr_expand,
+
+    /** The end of valid instructions (exclusive). */
+    kKmkCcEvalInstr_End
+} KMKCCEVALINSTR;
+
+/**
+ * Instruction core common to all instructions.
+ */
+typedef struct kmk_cc_eval_core
+{
+    /** The instruction opcode number (KMKCCEVALINSTR). */
+    KMKCCEVALINSTR          enmOpcode;
+    /** The line number in the source this statement is associated with. */
+    unsigned                iLine;
+} KMKCCEVALCORE;
+/** Pointer to an instruction core structure. */
+typedef KMKCCEVALCORE *PKMKCCEVALCORE;
+
+/**
+ * Instruction format for kKmkCcEvalInstr_jump.
+ */
+typedef struct kmk_cc_eval_jump
+{
+    /** The core instruction. */
+    KMKCCEVALCORE           Core;
+    /** Where to jump to (new instruction block or endif, typically). */
+    PKMKCCEVALCORE          pNext;
+} KMKCCEVALJUMP;
+typedef KMKCCEVALJUMP *PKMKCCEVALJUMP;
+
+/**
+ * Instruction format for kKmkCcEvalInstr_assign_recursive,
+ * kKmkCcEvalInstr_assign_simple, kKmkCcEvalInstr_assign_append,
+ * kKmkCcEvalInstr_assign_prepend and kKmkCcEvalInstr_assign_if_new.
+ */
+typedef struct kmk_cc_eval_assign
+{
+    /** The core instruction. */
+    KMKCCEVALCORE           Core;
+    /** Whether the 'export' qualifier was used. */
+    uint8_t                 fExport;
+    /** Whether the 'override' qualifier was used. */
+    uint8_t                 fOverride;
+    /** Whether the 'local' qualifier was used. */
+    uint8_t                 fLocal;
+    /** Whether the 'private' qualifier was used. */
+    uint8_t                 fPrivate;
+    /** The variable name.
+     * @remarks Plain text names are in variable_strcache. */
+    KMKCCEXPSUBPROGORPLAIN  Variable;
+    /** The value or value expression. */
+    KMKCCEXPSUBPROGORPLAIN  Value;
+    /** Pointer to the next instruction. */
+    PKMKCCEVALCORE          pNext;
+} KMKCCEVALASSIGN;
+typedef KMKCCEVALASSIGN *PKMKCCEVALASSIGN;
+
+/**
+ * Instruction format for kKmkCcEvalInstr_define_recursive and
+ * kKmkCcEvalInstr_define_if_new.
+ */
+typedef struct kmk_cc_eval_assign_define
+{
+    /** The assignment core structure. */
+    KMKCCEVALASSIGN         AssignCore;
+    /** Makefile evaluation program compiled from the define.
+     * NULL if it does not compile.
+     * @todo Let's see if this is actually doable... */
+    PKMKCCEVALPROG          pEvalProg;
+} KMKCCEVALASSIGNDEF;
+typedef KMKCCEVALASSIGNDEF *PKMKCCEVALASSIGNDEF;
+
+/**
+ * Instruction format for kKmkCcEvalInstr_export, kKmkCcEvalInstr_unexport and
+ * kKmkCcEvalInstr_undefine.
+ */
+typedef struct kmk_cc_eval_variables
+{
+    /** The core instruction. */
+    KMKCCEVALCORE           Core;
+    /** The number of variables named in aVars. */
+    uint32_t                cVars;
+    /** Whether the 'local' qualifier was used (undefine only). */
+    uint8_t                 fLocal;
+    /** Pointer to the next instruction. */
+    PKMKCCEVALCORE          pNext;
+    /** The variable names.
+     * Expressions will be expanded and split on space.
+     * @remarks Plain text names are in variable_strcache. */
+    KMKCCEXPSUBPROGORPLAIN  aVars[1];
+} KMKCCEVALVARIABLES;
+typedef KMKCCEVALVARIABLES *PKMKCCEVALVARIABLES;
+/** Calculates the size of an KMKCCEVALVARIABLES structure for @a a_cVars. */
+#define KMKCCEVALVARIABLES_SIZE(a_cVars) KMK_CC_SIZEOF_VAR_STRUCT(KMKCCEVALVARIABLES, aVars, a_cVars)
+
+/**
+ * Core structure for all conditionals (kKmkCcEvalInstr_if*).
+ */
+typedef struct kmk_cc_eval_if_core
+{
+    /** The core instruction. */
+    KMKCCEVALCORE           Core;
+    /** Condition true: Pointer to the next instruction. */
+    PKMKCCEVALCORE          pNextTrue;
+    /** Condition false: Pointer to the next instruction (i.e. 'else if*'
+     * or whatever follows 'else' / 'endif'. */
+    PKMKCCEVALCORE          pNextFalse;
+    /** Pointer to the previous conditional for 'else if*' directives.
+     * This is only to assist the compilation process. */
+    struct kmk_cc_eval_if_core *pPrevCond;
+    /** Pointer to the jump out of the true block, if followed by 'else'.
+     * This is only to assist the compilation process. */
+    PKMKCCEVALJUMP          pTrueEndJump;
+} KMKCCEVALIFCORE;
+typedef KMKCCEVALIFCORE *PKMKCCEVALIFCORE;
+
+/**
+ * Instruction format for kKmkCcEvalInstr_ifdef_plain and
+ * kKmkCcEvalInstr_ifndef_plain.
+ * The variable name is known at compilation time.
+ */
+typedef struct kmk_cc_eval_ifdef_plain
+{
+    /** The 'if' core structure. */
+    KMKCCEVALIFCORE         IfCore;
+    /** The name of the variable (points into variable_strcache). */
+    const char             *pszName;
+} KMKCCEVALIFDEFPLAIN;
+typedef KMKCCEVALIFDEFPLAIN *PKMKCCEVALIFDEFPLAIN;
+
+/**
+ * Instruction format for kKmkCcEvalInstr_ifdef_dynamic and
+ * kKmkCcEvalInstr_ifndef_dynamic.
+ * The variable name is dynamically expanded at run time.
+ */
+typedef struct kmk_cc_eval_ifdef_dynamic
+{
+    /** The 'if' core structure. */
+    KMKCCEVALIFCORE         IfCore;
+    /** Alignment padding, MBZ. */
+    KU32                    uPadding;
+    /** The subprogram that will give us the variable name. */
+    KMKCCEXPSUBPROG         NameSubprog;
+} KMKCCEVALIFDEFDYNAMIC;
+typedef KMKCCEVALIFDEFDYNAMIC *PKMKCCEVALIFDEFDYNAMIC;
+
+/**
+ * Instruction format for kKmkCcEvalInstr_ifeq and kKmkCcEvalInstr_ifneq.
+ */
+typedef struct kmk_cc_eval_ifeq
+{
+    /** The 'if' core structure. */
+    KMKCCEVALIFCORE         IfCore;
+    /** The left hand side string expression (dynamic or plain). */
+    KMKCCEXPSUBPROGORPLAIN  Left;
+    /** The rigth hand side string expression (dynamic or plain). */
+    KMKCCEXPSUBPROGORPLAIN  Right;
+} KMKCCEVALIFEQ;
+typedef KMKCCEVALIFEQ *PKMKCCEVALIFEQ;
+
+/**
+ * Instruction format for kKmkCcEvalInstr_if1of and kKmkCcEvalInstr_ifn1of.
+ *
+ * @todo This can be optimized further by pre-hashing plain text items.  One of
+ *       the sides are usually plain text.
+ */
+typedef struct kmk_cc_eval_if1of
+{
+    /** The 'if' core structure. */
+    KMKCCEVALIFCORE         IfCore;
+    /** The left hand side string expression (dynamic or plain). */
+    KMKCCEXPSUBPROGORPLAIN  Left;
+    /** The rigth hand side string expression (dynamic or plain). */
+    KMKCCEXPSUBPROGORPLAIN  Right;
+} KMKCCEVALIF1OF;
+typedef KMKCCEVALIF1OF *PKMKCCEVALIF1OF;
+
+/**
+ * Instruction format for kKmkCcEvalInstr_if.
+ *
+ * @todo Parse and compile the expression.  At least strip whitespace in it.
+ */
+typedef struct kmk_cc_eval_if_expr
+{
+    /** The 'if' core structure. */
+    KMKCCEVALIFCORE         IfCore;
+    /** The expression string length. */
+    uint16_t                cchExpr;
+    /** The expression string. */
+    char                    szExpr[1];
+} KMKCCEVALIFEXPR;
+typedef KMKCCEVALIFEXPR *PKMKCCEVALIFEXPR;
+/** Calculates the size of an KMKCCEVALIFEXPR structure for @a a_cchExpr long
+ * expression string (terminator is automatically added).  */
+#define KMKCCEVALIFEXPR_SIZE(a_cchExpr) KMK_CC_BLOCK_ALIGN_SIZE(KMK_CC_SIZEOF_VAR_STRUCT(KMKCCEVALIFEXPR, szExpr, (a_cchExpr) + 1))
+
+/**
+ * Instruction format for kKmkCcEvalInstr_include,
+ * kKmkCcEvalInstr_include_silent, kKmkCcEvalInstr_includedep,
+ * kKmkCcEvalInstr_includedep_queue, kKmkCcEvalInstr_includedep_flush.
+ */
+typedef struct kmk_cc_eval_include
+{
+    /** The core instruction. */
+    KMKCCEVALCORE           Core;
+    /** The number of files. */
+    uint32_t                cFiles;
+    /** Pointer to the next instruction (subprogs and strings after this one). */
+    PKMKCCEVALCORE          pNext;
+    /** The files to be included.
+     * Expressions will be expanded and split on space.
+     * @todo Plain text file name could be replaced by file string cache entries. */
+    KMKCCEXPSUBPROGORPLAIN  aFiles[1];
+} KMKCCEVALINCLUDE;
+typedef KMKCCEVALINCLUDE *PKMKCCEVALINCLUDE;
+/** Calculates the size of an KMKCCEVALINCLUDE structure for @a a_cFiles files. */
+#define KMKCCEVALINCLUDE_SIZE(a_cFiles) KMK_CC_SIZEOF_VAR_STRUCT(KMKCCEVALINCLUDE, aFiles, a_cFiles)
+
+/**
+ * Instruction format for kKmkCcEvalInstr_recipe_no_commands,
+ * kKmkCcEvalInstr_recipe_start_normal,
+ * kKmkCcEvalInstr_recipe_start_double_colon, kKmkCcEvalInstr_includedep_queue,
+ * kKmkCcEvalInstr_recipe_start_pattern.
+ */
+typedef struct kmk_cc_eval_recipe
+{
+    /** The core instruction. */
+    KMKCCEVALCORE           Core;
+    /** The total number of files and dependencies in aFilesAndDeps. */
+    uint16_t                cFilesAndDeps;
+
+    /** Number of targets (from index 0).
+     * This is always 1 if this is an explicit multitarget or pattern recipe,
+     * indicating the main target. */
+    uint16_t                cTargets;
+    /** Explicit multitarget & patterns: First always made target. */
+    uint16_t                iFirstAlwaysMadeTargets;
+    /** Explicit multitarget & patterns: Number of always targets. */
+    uint16_t                cAlwaysMadeTargets;
+    /** Explicit multitarget: First maybe made target. */
+    uint16_t                iFirstMaybeTarget;
+    /** Explicit multitarget: Number of maybe made targets. */
+    uint16_t                cMaybeTargets;
+
+    /** First dependency. */
+    uint16_t                iFirstDep;
+    /** Number of ordinary dependencies. */
+    uint16_t                cDeps;
+    /** First order only dependency. */
+    uint16_t                iFirstOrderOnlyDep;
+    /** Number of ordinary dependencies. */
+    uint16_t                cOrderOnlyDeps;
+
+    /** Pointer to the next instruction (subprogs and strings after this one). */
+    PKMKCCEVALCORE          pNext;
+    /** The .MUST_MAKE variable value, if present.
+     * If not present, this is a zero length plain string. */
+    KMKCCEXPSUBPROGORPLAIN  MustMake;
+    /** The target files and dependencies.
+     * This is sorted into several sections, as defined by the above indexes and
+     * counts.  Expressions will be expanded and split on space.
+     *
+     * The KMKCCEXPSUBPROGORPLAIN::bUser member one of KMKCCEVALRECIPE_FD_XXX.
+     *
+     * @todo Plain text file name could be replaced by file string cache entries. */
+    KMKCCEXPSUBPROGORPLAIN  aFilesAndDeps[1];
+} KMKCCEVALRECIPE;
+typedef KMKCCEVALRECIPE *PKMKCCEVALRECIPE;
+/** Calculates the size of an KMKCCEVALRECIPE structure for @a a_cFiles
+ *  files. */
+#define KMKCCEVALRECIPE_SIZE(a_cFilesAndDeps) KMK_CC_SIZEOF_VAR_STRUCT(KMKCCEVALRECIPE, aFilesAndDeps, a_cFilesAndDeps)
+/** @name KMKCCEVALRECIPE_FD_XXX - Values for KMKCCEVALRECIPE::aFilesAndDeps[x].bUser
+ * @{  */
+#define KMKCCEVALRECIPE_FD_NORMAL                   0
+#define KMKCCEVALRECIPE_FD_SEC_EXP                  1
+#define KMKCCEVALRECIPE_FD_SPECIAL_POSIX            2
+#define KMKCCEVALRECIPE_FD_SPECIAL_SECONDEXPANSION  3
+#define KMKCCEVALRECIPE_FD_SPECIAL_ONESHELL         4
+/** @} */
+
+
+/**
+ * Instruction format for kKmkCcEvalInstr_recipe_commands.
+ */
+typedef struct kmk_cc_eval_recipe_commands
+{
+    /** The core instruction. */
+    KMKCCEVALCORE           Core;
+    /** The number of commands. */
+    uint32_t                cCommands;
+    /** Pointer to the next instruction (subprogs and strings after this one). */
+    PKMKCCEVALCORE          pNext;
+    /** Commands to add to the current recipe.
+     * Expressions will be expanded and split on newline? */
+    KMKCCEXPSUBPROGORPLAIN  aCommands[1];
+} KMKCCEVALRECIPECOMMANDS;
+typedef KMKCCEVALRECIPECOMMANDS *PKMKCCEVALRECIPECOMMANDS;
+/** Calculates the size of an KMKCCEVALRECIPECOMMANDS structure for
+ * @a a_cCommands commands. */
+#define KMKCCEVALRECIPECOMMANDS_SIZE(a_cCommands) KMK_CC_SIZEOF_VAR_STRUCT(KMKCCEVALRECIPECOMMANDS, aCommands, a_cCommands)
+
+/**
+ * Instruction format for kKmkCcEvalInstr_vpath and
+ * kKmkCcEvalInstr_vpath_clear_pattern.
+ */
+typedef struct kmk_cc_eval_vpath
+{
+    /** The core instruction. */
+    KMKCCEVALCORE           Core;
+    /** The number of search directories.
+     * This will be zero for kKmkCcEvalInstr_vpath_clear_pattern. */
+    uint32_t                cDirs;
+    /** Pointer to the next instruction (subprogs and strings after this one). */
+    PKMKCCEVALCORE          pNext;
+    /** The pattern. */
+    KMKCCEXPSUBPROGORPLAIN  Pattern;
+    /** The directory. Expressions will be expanded and split on space. */
+    KMKCCEXPSUBPROGORPLAIN  aDirs[1];
+} KMKCCEVALVPATH;
+typedef KMKCCEVALVPATH *PKMKCCEVALVPATH;
+/** Calculates the size of an KMKCCEVALVPATH structure for @a a_cFiles files. */
+#define KMKCCEVALVPATH_SIZE(a_cFiles) KMK_CC_SIZEOF_VAR_STRUCT(KMKCCEVALVPATH, aDirs, a_cDirs)
+
+
+/**
+ * Instruction format for kKmkCcEvalInstr_expand.
+ */
+typedef struct kmk_cc_eval_expand
+{
+    /** The core instruction. */
+    KMKCCEVALCORE           Core;
+    /** Alignment padding, MBZ. */
+    KU32                    uPadding;
+    /** The expansion subprogram that to execute and evaluate the output of. */
+    KMKCCEXPSUBPROG         Subprog;
+} KMKCCEVALEXPAND;
+typedef KMKCCEVALEXPAND *PKMKCCEVALEXPAND;
+
+
+/**
+ * Makefile evaluation program.
+ */
+typedef struct kmk_cc_evalprog
+{
+    /** Pointer to the first instruction for this program. */
+    PKMKCCEVALCORE          pFirstInstr;
+    /** List of blocks for this program (LIFO). */
+    PKMKCCBLOCK             pBlockTail;
+    /** The name of the file containing this program. */
+    const char             *pszFilename;
+    /** The name of the variable containing this program, if applicable.  */
+    const char             *pszVarName;
+#ifdef KMK_CC_STRICT
+    /** The hash of the input string.  Used to check that we get all the change
+     * notifications we require. */
+    uint32_t                uInputHash;
+#endif
+    /** Reference count. */
+    uint32_t volatile       cRefs;
+} KMKCCEVALPROG;
+typedef KMKCCEVALPROG *PKMKCCEVALPROG;
+
+/** @} */
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static uint32_t g_cVarForExpandCompilations = 0;
+static uint32_t g_cVarForExpandExecs = 0;
+static uint32_t g_cVarForEvalCompilations = 0;
+static uint32_t g_cVarForEvalExecs = 0;
+static uint32_t g_cFileForEvalCompilations = 0;
+static uint32_t g_cFileForEvalExecs = 0;
+#ifdef KMK_CC_WITH_STATS
+static uint32_t g_cBlockAllocated = 0;
+static uint32_t g_cbAllocated = 0;
+
+static uint32_t g_cBlocksAllocatedExpProgs = 0;
+static uint32_t g_cbAllocatedExpProgs = 0;
+static uint32_t g_cSingleBlockExpProgs = 0;
+static uint32_t g_cTwoBlockExpProgs = 0;
+static uint32_t g_cMultiBlockExpProgs = 0;
+static uint32_t g_cbUnusedMemExpProgs = 0;
+
+static uint32_t g_cBlocksAllocatedEvalProgs = 0;
+static uint32_t g_cbAllocatedEvalProgs = 0;
+static uint32_t g_cSingleBlockEvalProgs = 0;
+static uint32_t g_cTwoBlockEvalProgs = 0;
+static uint32_t g_cMultiBlockEvalProgs = 0;
+static uint32_t g_cbUnusedMemEvalProgs = 0;
+
+#endif
+
+/** Generic character classification, taking an 'unsigned char' index.
+ * ASSUMES unsigned char is 8-bits. */
+static uint16_t g_abEvalCcChars[256];
+
+
+/**
+ * Makefile evaluation keywords.
+ */
+static const char * const g_apszEvalKeywords[] =
+{
+    "define",
+    "export",
+    "else",
+    "endef",
+    "endif",
+    "ifdef",
+    "ifndef",
+    "ifeq",
+    "ifneq",
+    "if1of",
+    "ifn1of",
+    "if",
+    "include",
+    "includedep",
+    "includedep-queue",
+    "includedep-flush",
+    "local",
+    "override",
+    "private",
+    "sinclude",
+    "unexport",
+    "undefine",
+    "vpath",
+    "-include",
+};
+
+
+/** This is parallel to KMKCCEVALINSTR.   */
+static const char * const g_apszEvalInstrNms[] =
+{
+    "jump",
+    "assign_recursive",
+    "assign_simple",
+    "assign_append",
+    "assign_prepend",
+    "assign_if_new",
+    "define_recursive",
+    "define_if_new",
+    "export",
+    "unexport",
+    "export_all",
+    "unexport_all",
+    "undefine",
+    "ifdef_plain",
+    "ifndef_plain",
+    "ifdef_dynamic",
+    "ifndef_dynamic",
+    "ifeq",
+    "ifneq",
+    "if1of",
+    "ifn1of",
+    "if",
+    "include",
+    "include_silent",
+    "includedep",
+    "includedep_queue",
+    "includedep_flush",
+    "recipe_no_commands",
+    "recipe_start_normal",
+    "recipe_start_double_colon",
+    "recipe_start_pattern",
+    "recipe_commands",
+    "recipe_end",
+    "recipe_cancel_pattern",
+    "vpath",
+    "vpath_clear_pattern",
+    "vpath_clear_all",
+};
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+static int kmk_cc_exp_compile_subprog(PKMKCCBLOCK *ppBlockTail, const char *pchStr, uint32_t cchStr, PKMKCCEXPSUBPROG pSubprog);
+static char *kmk_exec_expand_subprog_to_tmp(PKMKCCEXPSUBPROG pSubprog, uint32_t *pcch);
+
+
+/**
+ * Initializes global variables for the 'compiler'.
+ */
+void kmk_cc_init(void)
+{
+    unsigned i;
+
+    /*
+     * Initialize the bitmap.
+     */
+    memset(g_abEvalCcChars, 0, sizeof(g_abEvalCcChars));
+
+    /* blank chars */
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, ' ',  KMK_CC_EVAL_CH_BLANK);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '\t', KMK_CC_EVAL_CH_BLANK);
+
+    /* space chars and zero terminator. */
+#define MY_SPACE_BITS KMK_CC_EVAL_CH_SPACE | KMK_CC_EVAL_CH_SPACE_OR_BACKSLASH | KMK_CC_EVAL_CH_SPACE_VAR_OR_RECIPE
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, ' ',  MY_SPACE_BITS);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '\t', MY_SPACE_BITS);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '\n', MY_SPACE_BITS | KMK_CC_EVAL_CH_EOL_CANDIDATE);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '\v', MY_SPACE_BITS);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '\f', MY_SPACE_BITS);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '\r', MY_SPACE_BITS | KMK_CC_EVAL_CH_EOL_CANDIDATE);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '\\', KMK_CC_EVAL_CH_SPACE_OR_BACKSLASH | KMK_CC_EVAL_CH_SPACE_VAR_OR_RECIPE);
+#undef MY_SPACE_BITS
+
+    /* keywords  */
+    for (i = 0; i < K_ELEMENTS(g_apszEvalKeywords); i++)
+    {
+#ifdef KMK_CC_STRICT
+        size_t cch = strlen(g_apszEvalKeywords[i]);
+        KMK_CC_ASSERT(cch >= KMK_CC_EVAL_KEYWORD_MIN);
+        KMK_CC_ASSERT(cch <= KMK_CC_EVAL_KEYWORD_MAX);
+#endif
+
+        KMK_CC_EVAL_BM_OR(g_abEvalCcChars, g_apszEvalKeywords[i][0], KMK_CC_EVAL_CH_1ST_IN_KEYWORD);
+        KMK_CC_EVAL_BM_OR(g_abEvalCcChars, g_apszEvalKeywords[i][1], KMK_CC_EVAL_CH_2ND_IN_KEYWORD);
+    }
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, 'd', KMK_CC_EVAL_CH_1ST_IN_VARIABLE_KEYWORD); /* define */
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, 'e', KMK_CC_EVAL_CH_1ST_IN_VARIABLE_KEYWORD); /* export, endef */
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, 'l', KMK_CC_EVAL_CH_1ST_IN_VARIABLE_KEYWORD); /* local */
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, 'o', KMK_CC_EVAL_CH_1ST_IN_VARIABLE_KEYWORD); /* override */
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, 'p', KMK_CC_EVAL_CH_1ST_IN_VARIABLE_KEYWORD); /* private */
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, 'u', KMK_CC_EVAL_CH_1ST_IN_VARIABLE_KEYWORD); /* undefine, unexport */
+
+    /* Assignment punctuation and recipe stuff. */
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '=', KMK_CC_EVAL_CH_SPACE_VAR_OR_RECIPE);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, ':', KMK_CC_EVAL_CH_SPACE_VAR_OR_RECIPE);
+
+    /* For locating the end of variable expansion.  */
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '(', KMK_CC_EVAL_CH_PAREN_OR_SLASH);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, ')', KMK_CC_EVAL_CH_PAREN_OR_SLASH);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '{', KMK_CC_EVAL_CH_PAREN_OR_SLASH);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '}', KMK_CC_EVAL_CH_PAREN_OR_SLASH);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '\\', KMK_CC_EVAL_CH_PAREN_OR_SLASH);
+
+    /* For parsing ifeq and if1of expressions. (GNU weirdly does not respect {} style function references.)  */
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '(', KMK_CC_EVAL_CH_PAREN_COMMA_OR_DOLLAR);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, ')', KMK_CC_EVAL_CH_PAREN_COMMA_OR_DOLLAR);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, ',', KMK_CC_EVAL_CH_PAREN_COMMA_OR_DOLLAR);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '$', KMK_CC_EVAL_CH_PAREN_COMMA_OR_DOLLAR);
+
+    /* Misc. */
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '$',  KMK_CC_EVAL_CH_DOLLAR);
+    KMK_CC_EVAL_BM_OR(g_abEvalCcChars, '\\', KMK_CC_EVAL_CH_BACKSLASH);
+
+    /*
+     * Check that the eval instruction names match up.
+     */
+    KMK_CC_ASSERT(strcmp(g_apszEvalInstrNms[kKmkCcEvalInstr_ifneq], "ifneq") == 0);
+    KMK_CC_ASSERT(strcmp(g_apszEvalInstrNms[kKmkCcEvalInstr_vpath_clear_all], "vpath_clear_all") == 0);
+}
+
+
+/**
+ * Prints stats (for kmk -p).
+ */
+void kmk_cc_print_stats(void)
+{
+#ifdef KMK_CC_WITH_STATS
+    uint32_t const cEvalCompilations = g_cFileForEvalCompilations + g_cVarForEvalCompilations;
+#endif
+
+    puts(_("\n# The kmk 'compiler' and kmk 'program executor':\n"));
+
+    printf(_("# Variables compiled for string expansion: %6u\n"), g_cVarForExpandCompilations);
+    printf(_("# Variables string expansion runs:         %6u\n"), g_cVarForExpandExecs);
+    printf(_("# String expansion runs per compile:       %6u\n"), g_cVarForExpandExecs / g_cVarForExpandCompilations);
+#ifdef KMK_CC_WITH_STATS
+    printf(_("#          Single alloc block exp progs:   %6u (%u%%)\n"
+             "#             Two alloc block exp progs:   %6u (%u%%)\n"
+             "#   Three or more alloc block exp progs:   %6u (%u%%)\n"
+             ),
+           g_cSingleBlockExpProgs, (uint32_t)((uint64_t)g_cSingleBlockExpProgs * 100 / g_cVarForExpandCompilations),
+           g_cTwoBlockExpProgs,    (uint32_t)((uint64_t)g_cTwoBlockExpProgs    * 100 / g_cVarForExpandCompilations),
+           g_cMultiBlockExpProgs,  (uint32_t)((uint64_t)g_cMultiBlockExpProgs  * 100 / g_cVarForExpandCompilations));
+    printf(_("#  Total amount of memory for exp progs: %8u bytes\n"
+             "#                                    in:   %6u blocks\n"
+             "#                        avg block size:   %6u bytes\n"
+             "#                         unused memory: %8u bytes (%u%%)\n"
+             "#           avg unused memory per block:   %6u bytes\n"
+             "\n"),
+           g_cbAllocatedExpProgs, g_cBlocksAllocatedExpProgs, g_cbAllocatedExpProgs / g_cBlocksAllocatedExpProgs,
+           g_cbUnusedMemExpProgs, (uint32_t)((uint64_t)g_cbUnusedMemExpProgs * 100 / g_cbAllocatedExpProgs),
+           g_cbUnusedMemExpProgs / g_cBlocksAllocatedExpProgs);
+    puts("");
+#endif
+    printf(_("# Variables compiled for string eval:      %6u\n"), g_cVarForEvalCompilations);
+    printf(_("# Variables string eval runs:              %6u\n"), g_cVarForEvalExecs);
+    printf(_("# String evals runs per compile:           %6u\n"), g_cVarForEvalExecs / g_cVarForEvalCompilations);
+    printf(_("# Files compiled:                          %6u\n"), g_cFileForEvalCompilations);
+    printf(_("# Files runs:                              %6u\n"), g_cFileForEvalExecs);
+    printf(_("# Files eval runs per compile:             %6u\n"), g_cFileForEvalExecs / g_cFileForEvalCompilations);
+#ifdef KMK_CC_WITH_STATS
+    printf(_("#         Single alloc block eval progs:   %6u (%u%%)\n"
+             "#            Two alloc block eval progs:   %6u (%u%%)\n"
+             "#  Three or more alloc block eval progs:   %6u (%u%%)\n"
+             ),
+           g_cSingleBlockEvalProgs, (uint32_t)((uint64_t)g_cSingleBlockEvalProgs * 100 / cEvalCompilations),
+           g_cTwoBlockEvalProgs,    (uint32_t)((uint64_t)g_cTwoBlockEvalProgs    * 100 / cEvalCompilations),
+           g_cMultiBlockEvalProgs,  (uint32_t)((uint64_t)g_cMultiBlockEvalProgs  * 100 / cEvalCompilations));
+    printf(_("# Total amount of memory for eval progs: %8u bytes\n"
+             "#                                    in:   %6u blocks\n"
+             "#                        avg block size:   %6u bytes\n"
+             "#                         unused memory: %8u bytes (%u%%)\n"
+             "#           avg unused memory per block:   %6u bytes\n"
+             "\n"),
+           g_cbAllocatedEvalProgs, g_cBlocksAllocatedEvalProgs, g_cbAllocatedEvalProgs / g_cBlocksAllocatedEvalProgs,
+           g_cbUnusedMemEvalProgs, (uint32_t)((uint64_t)g_cbUnusedMemEvalProgs * 100 / g_cbAllocatedEvalProgs),
+           g_cbUnusedMemEvalProgs / g_cBlocksAllocatedEvalProgs);
+    puts("");
+    printf(_("#   Total amount of block mem allocated: %8u bytes\n"), g_cbAllocated);
+    printf(_("#       Total number of block allocated: %8u\n"), g_cBlockAllocated);
+    printf(_("#                    Average block size: %8u byte\n"), g_cbAllocated / g_cBlockAllocated);
+#endif
+
+    puts("");
+}
+
+
+/*
+ *
+ * Various utility functions.
+ * Various utility functions.
+ * Various utility functions.
+ *
+ */
+
+/**
+ * Counts the number of dollar chars in the string.
+ *
+ * @returns Number of dollar chars.
+ * @param   pchStr      The string to search (does not need to be zero
+ *                      terminated).
+ * @param   cchStr      The length of the string.
+ */
+static uint32_t kmk_cc_count_dollars(const char *pchStr, uint32_t cchStr)
+{
+    uint32_t cDollars = 0;
+    const char *pch;
+    while ((pch = memchr(pchStr, '$', cchStr)) != NULL)
+    {
+        cDollars++;
+        cchStr -= pch - pchStr + 1;
+        pchStr  = pch + 1;
+    }
+    return cDollars;
+}
+
+#ifdef KMK_CC_STRICT
+/**
+ * Used to check that function arguments are left alone.
+ * @returns Updated hash.
+ * @param   uHash       The current hash value.
+ * @param   psz         The string to hash.
+ */
+static uint32_t kmk_cc_debug_string_hash(uint32_t uHash, const char *psz)
+{
+    unsigned char ch;
+    while ((ch = *(unsigned char const *)psz++) != '\0')
+        uHash = (uHash << 6) + (uHash << 16) - uHash + (unsigned char)ch;
+    return uHash;
+}
+
+/**
+ * Used to check that function arguments are left alone.
+ * @returns Updated hash.
+ * @param   uHash       The current hash value.
+ * @param   pch         The string to hash, not terminated.
+ * @param   cch         The number of chars to hash.
+ */
+static uint32_t kmk_cc_debug_string_hash_n(uint32_t uHash, const char *pch, uint32_t cch)
+{
+    while (cch-- > 0)
+    {
+        unsigned char ch = *(unsigned char const *)pch++;
+        uHash = (uHash << 6) + (uHash << 16) - uHash + (unsigned char)ch;
+    }
+    return uHash;
+}
+
+#endif
+
+
+
+/*
+ *
+ * The allocator.
+ * The allocator.
+ * The allocator.
+ *
+ */
+
+
+/**
+ * For the first allocation using the block allocator.
+ *
+ * @returns Pointer to the first allocation (@a cbFirst in size).
+ * @param   ppBlockTail         Where to return the pointer to the first block.
+ * @param   cbFirst             The size of the first allocation.
+ * @param   cbHint              Hint about how much memory we might be needing.
+ */
+static void *kmk_cc_block_alloc_first(PKMKCCBLOCK *ppBlockTail, size_t cbFirst, size_t cbHint)
+{
+    uint32_t        cbBlock;
+    PKMKCCBLOCK     pNewBlock;
+
+    KMK_CC_ASSERT_ALIGNED(cbFirst, sizeof(void *));
+    KMK_CC_ASSERT(cbFirst <= 128);
+
+    /*
+     * Turn the hint into a block size.
+     */
+    cbHint += cbFirst;
+    if (cbHint <= 512)
+    {
+        if (cbHint <= 256)
+        {
+            if (cbFirst <= 64)
+                cbBlock = 128;
+            else
+                cbBlock = 256;
+        }
+        else
+            cbBlock = 256;
+    }
+    else if (cbHint < 2048)
+        cbBlock = 1024;
+    else if (cbHint < 3072)
+        cbBlock = 2048;
+    else
+        cbBlock = 4096;
+
+    /*
+     * Allocate and initialize the first block.
+     */
+    pNewBlock = (PKMKCCBLOCK)xmalloc(cbBlock);
+    pNewBlock->cbBlock = cbBlock;
+    pNewBlock->offNext = sizeof(*pNewBlock) + cbFirst;
+    pNewBlock->pNext   = NULL;
+    *ppBlockTail = pNewBlock;
+
+#ifdef KMK_CC_WITH_STATS
+    g_cBlockAllocated++;
+    g_cbAllocated += cbBlock;
+#endif
+
+    return pNewBlock + 1;
+}
+
+
+/**
+ * Used for getting the address of the next instruction.
+ *
+ * @returns Pointer to the next allocation.
+ * @param   pBlockTail          The allocator tail pointer.
+ */
+static void *kmk_cc_block_get_next_ptr(PKMKCCBLOCK pBlockTail)
+{
+    return (char *)pBlockTail + pBlockTail->offNext;
+}
+
+
+/**
+ * Realigns the allocator after doing byte or string allocations.
+ *
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ */
+static void kmk_cc_block_realign(PKMKCCBLOCK *ppBlockTail)
+{
+    PKMKCCBLOCK pBlockTail = *ppBlockTail;
+    uint32_t    offNext    = pBlockTail->offNext;
+    if (offNext & (sizeof(void *) - 1U))
+    {
+        pBlockTail->offNext = KMK_CC_BLOCK_ALIGN_SIZE(offNext);
+        KMK_CC_BLOCK_DPRINTF(("kmk_cc_block_realign: offNext=%#x -> %#x\n", offNext, pBlockTail->offNext));
+        KMK_CC_ASSERT(pBlockTail->cbBlock - pBlockTail->offNext >= sizeof(KMKCCEXPJUMP));
+    }
+}
+
+
+/**
+ * Grows the allocation with another block, byte allocator case.
+ *
+ * @returns Pointer to the byte allocation.
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ * @param   cb                  The number of bytes to allocate.
+ */
+static void *kmk_cc_block_byte_alloc_grow(PKMKCCBLOCK *ppBlockTail, uint32_t cb)
+{
+    PKMKCCBLOCK     pOldBlock  = *ppBlockTail;
+    PKMKCCBLOCK     pPrevBlock = pOldBlock->pNext;
+    PKMKCCBLOCK     pNewBlock;
+    uint32_t        cbBlock;
+
+    /*
+     * Check if there accidentally is some space left in the previous block first.
+     */
+    if (   pPrevBlock
+        && pPrevBlock->cbBlock - pPrevBlock->offNext >= cb)
+    {
+        void *pvRet = (char *)pPrevBlock + pPrevBlock->offNext;
+        pPrevBlock->offNext += cb;
+        KMK_CC_BLOCK_DPRINTF(("kmk_cc_block_byte_alloc_grow: %p LB %#x offNext=%#x [prev]\n", pvRet, cb, pPrevBlock->offNext));
+        return pvRet;
+    }
+
+    /*
+     * Allocate a new block.
+     */
+
+    /* Figure the block size. */
+    cbBlock = pOldBlock->cbBlock;
+    while (cbBlock - sizeof(KMKCCEXPJUMP) - sizeof(*pNewBlock) < cb)
+        cbBlock *= 2;
+
+    /* Allocate and initialize the block it with the new instruction already accounted for. */
+    pNewBlock = (PKMKCCBLOCK)xmalloc(cbBlock);
+    pNewBlock->cbBlock = cbBlock;
+    pNewBlock->offNext = sizeof(*pNewBlock) + cb;
+    pNewBlock->pNext   = pOldBlock;
+    *ppBlockTail = pNewBlock;
+
+#ifdef KMK_CC_WITH_STATS
+    g_cBlockAllocated++;
+    g_cbAllocated += cbBlock;
+#endif
+
+    KMK_CC_BLOCK_DPRINTF(("kmk_cc_block_byte_alloc_grow: %p LB %#x offNext=%#x\n", pNewBlock + 1, cb, pNewBlock->offNext));
+    return pNewBlock + 1;
+}
+
+
+/**
+ * Make a byte allocation.
+ *
+ * Must call kmk_cc_block_realign() when done doing byte and string allocations.
+ *
+ * @returns Pointer to the byte allocation (byte aligned).
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ * @param   cb                  The number of bytes to allocate.
+ */
+static void *kmk_cc_block_byte_alloc(PKMKCCBLOCK *ppBlockTail, uint32_t cb)
+{
+    PKMKCCBLOCK pBlockTail = *ppBlockTail;
+    uint32_t    cbLeft     = pBlockTail->cbBlock - pBlockTail->offNext;
+
+    KMK_CC_ASSERT(cbLeft >= sizeof(KMKCCEXPJUMP));
+    if (cbLeft >= cb + sizeof(KMKCCEXPJUMP))
+    {
+        void *pvRet = (char *)pBlockTail + pBlockTail->offNext;
+        pBlockTail->offNext += cb;
+        KMK_CC_BLOCK_DPRINTF(("kmk_cc_block_byte_alloc: %p LB %#x offNext=%#x\n", pvRet, cb, pBlockTail->offNext));
+        return pvRet;
+    }
+    return kmk_cc_block_byte_alloc_grow(ppBlockTail, cb);
+}
+
+
+/**
+ * Duplicates the given string in a byte allocation.
+ *
+ * Must call kmk_cc_block_realign() when done doing byte and string allocations.
+ *
+ * @returns Pointer to the byte allocation (byte aligned).
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ * @param   cb                  The number of bytes to allocate.
+ */
+static const char *kmk_cc_block_strdup(PKMKCCBLOCK *ppBlockTail, const char *pachStr, uint32_t cchStr)
+{
+    char *pszCopy;
+    if (cchStr)
+    {
+        pszCopy = kmk_cc_block_byte_alloc(ppBlockTail, cchStr + 1);
+        memcpy(pszCopy, pachStr, cchStr);
+        pszCopy[cchStr] = '\0';
+        return pszCopy;
+    }
+    return "";
+}
+
+
+/**
+ * Grows the allocation with another block, string expansion program case.
+ *
+ * @returns Pointer to a string expansion instruction core.
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ * @param   cb                  The number of bytes to allocate.
+ */
+static PKMKCCEXPCORE kmk_cc_block_alloc_exp_grow(PKMKCCBLOCK *ppBlockTail, uint32_t cb)
+{
+    PKMKCCBLOCK     pOldBlock = *ppBlockTail;
+    PKMKCCBLOCK     pNewBlock;
+    PKMKCCEXPCORE   pRet;
+    PKMKCCEXPJUMP   pJump;
+
+    /* Figure the block size. */
+    uint32_t cbBlock = !pOldBlock->pNext ? 128 : pOldBlock->cbBlock;
+    while (cbBlock - sizeof(KMKCCEXPJUMP) - sizeof(*pNewBlock) < cb)
+        cbBlock *= 2;
+
+    /* Allocate and initialize the block it with the new instruction already accounted for. */
+    pNewBlock = (PKMKCCBLOCK)xmalloc(cbBlock);
+    pNewBlock->cbBlock = cbBlock;
+    pNewBlock->offNext = sizeof(*pNewBlock) + cb;
+    pNewBlock->pNext   = pOldBlock;
+    *ppBlockTail = pNewBlock;
+
+#ifdef KMK_CC_WITH_STATS
+    g_cBlockAllocated++;
+    g_cbAllocated += cbBlock;
+#endif
+
+    pRet = (PKMKCCEXPCORE)(pNewBlock + 1);
+    KMK_CC_ASSERT(((size_t)pRet & (sizeof(void *) - 1)) == 0);
+
+    /* Emit jump. */
+    pJump = (PKMKCCEXPJUMP)((char *)pOldBlock + pOldBlock->offNext);
+    pJump->Core.enmOpcode = kKmkCcExpInstr_Jump;
+    pJump->pNext = pRet;
+    pOldBlock->offNext += sizeof(*pJump);
+    KMK_CC_ASSERT(pOldBlock->offNext <= pOldBlock->cbBlock);
+
+    KMK_CC_BLOCK_DPRINTF(("kmk_cc_block_alloc_exp_grow: %p LB %#x offNext=%#x\n", pRet, cb, pNewBlock->offNext));
+    return pRet;
+}
+
+
+/**
+ * Allocates a string expansion instruction of size @a cb.
+ *
+ * @returns Pointer to a string expansion instruction core.
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ * @param   cb                  The number of bytes to allocate.
+ */
+static PKMKCCEXPCORE kmk_cc_block_alloc_exp(PKMKCCBLOCK *ppBlockTail, uint32_t cb)
+{
+    PKMKCCBLOCK pBlockTail = *ppBlockTail;
+    uint32_t    cbLeft = pBlockTail->cbBlock - pBlockTail->offNext;
+
+    KMK_CC_ASSERT(cbLeft >= sizeof(KMKCCEXPJUMP));
+    KMK_CC_ASSERT( (cb & (sizeof(void *) - 1)) == 0 || cb == sizeof(KMKCCEXPCORE) /* final */ );
+    KMK_CC_ASSERT((pBlockTail->offNext & (sizeof(void *) - 1)) == 0);
+
+    if (cbLeft >= cb + sizeof(KMKCCEXPJUMP))
+    {
+        PKMKCCEXPCORE pRet = (PKMKCCEXPCORE)((char *)pBlockTail + pBlockTail->offNext);
+        pBlockTail->offNext += cb;
+        KMK_CC_ASSERT(((size_t)pRet & (sizeof(void *) - 1)) == 0);
+        KMK_CC_BLOCK_DPRINTF(("kmk_cc_block_alloc_exp: %p LB %#x offNext=%#x\n", pRet, cb, pBlockTail->offNext));
+        return pRet;
+    }
+    return kmk_cc_block_alloc_exp_grow(ppBlockTail, cb);
+}
+
+
+/**
+ * Grows the allocation with another block, makefile evaluation program case.
+ *
+ * @returns Pointer to a makefile evaluation instruction core.
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ * @param   cb                  The number of bytes to allocate.
+ */
+static PKMKCCEVALCORE kmk_cc_block_alloc_eval_grow(PKMKCCBLOCK *ppBlockTail, uint32_t cb)
+{
+    PKMKCCBLOCK     pOldBlock = *ppBlockTail;
+    PKMKCCBLOCK     pNewBlock;
+    PKMKCCEVALCORE  pRet;
+    PKMKCCEVALJUMP  pJump;
+
+    /* Figure the block size. */
+    uint32_t cbBlock = !pOldBlock->pNext ? 128 : pOldBlock->cbBlock;
+    while (cbBlock - sizeof(KMKCCEVALJUMP) - sizeof(*pNewBlock) < cb)
+        cbBlock *= 2;
+
+    /* Allocate and initialize the block it with the new instruction already accounted for. */
+    pNewBlock = (PKMKCCBLOCK)xmalloc(cbBlock);
+    pNewBlock->cbBlock = cbBlock;
+    pNewBlock->offNext = sizeof(*pNewBlock) + cb;
+    pNewBlock->pNext   = pOldBlock;
+    *ppBlockTail = pNewBlock;
+
+#ifdef KMK_CC_WITH_STATS
+    g_cBlockAllocated++;
+    g_cbAllocated += cbBlock;
+#endif
+
+    pRet = (PKMKCCEVALCORE)(pNewBlock + 1);
+
+    /* Emit jump. */
+    pJump = (PKMKCCEVALJUMP)((char *)pOldBlock + pOldBlock->offNext);
+    pJump->Core.enmOpcode = kKmkCcEvalInstr_jump;
+    pJump->pNext = pRet;
+    pOldBlock->offNext += sizeof(*pJump);
+    KMK_CC_ASSERT(pOldBlock->offNext <= pOldBlock->cbBlock);
+    KMK_CC_ASSERT((pNewBlock->offNext & (sizeof(void *) - 1)) == 0);
+
+    KMK_CC_BLOCK_DPRINTF(("kmk_cc_block_alloc_eval_grow: %p LB %#x offNext=%#x (*ppBlockTail=%p, was %p)\n",
+                          pRet, cb, pNewBlock->offNext, *ppBlockTail, pOldBlock));
+    return pRet;
+}
+
+
+/**
+ * Allocates a makefile evaluation instruction of size @a cb.
+ *
+ * @returns Pointer to a makefile evaluation instruction core.
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ * @param   cb                  The number of bytes to allocate.
+ */
+static PKMKCCEVALCORE kmk_cc_block_alloc_eval(PKMKCCBLOCK *ppBlockTail, uint32_t cb)
+{
+    PKMKCCBLOCK pBlockTail = *ppBlockTail;
+    uint32_t    cbLeft = pBlockTail->cbBlock - pBlockTail->offNext;
+
+    KMK_CC_ASSERT(cbLeft >= sizeof(KMKCCEVALJUMP));
+    KMK_CC_ASSERT( (cb & (sizeof(void *) - 1)) == 0 );
+    KMK_CC_ASSERT((pBlockTail->offNext & (sizeof(void *) - 1)) == 0);
+
+    if (cbLeft >= cb + sizeof(KMKCCEVALJUMP))
+    {
+        PKMKCCEVALCORE pRet = (PKMKCCEVALCORE)((char *)pBlockTail + pBlockTail->offNext);
+        pBlockTail->offNext += cb;
+        KMK_CC_BLOCK_DPRINTF(("kmk_cc_block_alloc_eval: %p LB %#x offNext=%#x\n", pRet, cb, pBlockTail->offNext));
+        return pRet;
+    }
+    return kmk_cc_block_alloc_eval_grow(ppBlockTail, cb);
+}
+
+
+/**
+ * Frees all memory used by an allocator.
+ *
+ * @param   ppBlockTail         The allocator tail pointer.
+ */
+static void kmk_cc_block_free_list(PKMKCCBLOCK pBlockTail)
+{
+    while (pBlockTail)
+    {
+        PKMKCCBLOCK pThis = pBlockTail;
+        pBlockTail = pBlockTail->pNext;
+        free(pThis);
+    }
+}
+
+
+/*
+ *
+ * The string expansion compiler.
+ * The string expansion compiler.
+ * The string expansion compiler.
+ *
+ */
+
+
+/**
+ * Emits a kKmkCcExpInstr_Return.
+ *
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ */
+static void kmk_cc_exp_emit_return(PKMKCCBLOCK *ppBlockTail)
+{
+    PKMKCCEXPCORE pCore = kmk_cc_block_alloc_exp(ppBlockTail, sizeof(*pCore));
+    pCore->enmOpcode = kKmkCcExpInstr_Return;
+    kmk_cc_block_realign(ppBlockTail);
+}
+
+
+/**
+ * Checks if a function is known to mess up the arguments its given.
+ *
+ * When executing calls to "dirty" functions, all arguments must be duplicated
+ * on the heap.
+ *
+ * @returns 1 if dirty, 0 if clean.
+ * @param   pszFunction         The function name.
+ */
+static uint8_t kmk_cc_is_dirty_function(const char *pszFunction)
+{
+    switch (pszFunction[0])
+    {
+        default:
+            return 0;
+
+        case 'e':
+            if (!strcmp(pszFunction, "eval"))
+                return 1;
+            if (!strcmp(pszFunction, "evalctx"))
+                return 1;
+            return 0;
+
+        case 'f':
+            if (!strcmp(pszFunction, "filter"))
+                return 1;
+            if (!strcmp(pszFunction, "filter-out"))
+                return 1;
+            if (!strcmp(pszFunction, "for"))
+                return 1;
+            return 0;
+
+        case 's':
+            if (!strcmp(pszFunction, "sort"))
+                return 1;
+            return 0;
+    }
+}
+
+
+/**
+ * Emits a function call instruction taking arguments that needs expanding.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   ppBlockTail     Pointer to the allocator tail pointer.
+ * @param   pszFunction     The function name (const string from function.c).
+ * @param   pchArgs         Pointer to the arguments expression string, leading
+ *                          any blanks has been stripped.
+ * @param   cchArgs         The length of the arguments expression string.
+ * @param   cArgs           Number of arguments found.
+ * @param   chOpen          The char used to open the function call.
+ * @param   chClose         The char used to close the function call.
+ * @param   pfnFunction     The function implementation.
+ * @param   cMaxArgs        Maximum number of arguments the function takes.
+ */
+static int kmk_cc_exp_emit_dyn_function(PKMKCCBLOCK *ppBlockTail, const char *pszFunction,
+                                        const char *pchArgs, uint32_t cchArgs, uint32_t cArgs, char chOpen, char chClose,
+                                        make_function_ptr_t pfnFunction, unsigned char cMaxArgs)
+{
+    uint32_t iArg;
+
+    /*
+     * The function instruction has variable size.  The maximum argument count
+     * isn't quite like the minium one.  Zero means no limit.  While a non-zero
+     * value means that any commas beyond the max will be taken to be part of
+     * the final argument.
+     */
+    uint32_t            cActualArgs = cArgs <= cMaxArgs || !cMaxArgs ? cArgs : cMaxArgs;
+    PKMKCCEXPDYNFUNC    pInstr  = (PKMKCCEXPDYNFUNC)kmk_cc_block_alloc_exp(ppBlockTail, KMKCCEXPDYNFUNC_SIZE(cActualArgs));
+    pInstr->FnCore.Core.enmOpcode = kKmkCcExpInstr_DynamicFunction;
+    pInstr->FnCore.cArgs          = cActualArgs;
+    pInstr->FnCore.pfnFunction    = pfnFunction;
+    pInstr->FnCore.pszFuncName    = pszFunction;
+    pInstr->FnCore.fDirty         = kmk_cc_is_dirty_function(pszFunction);
+
+    /*
+     * Parse the arguments.  Plain arguments gets duplicated in the program
+     * memory so that they are terminated and no extra processing is necessary
+     * later on.  ASSUMES that the function implementations do NOT change
+     * argument memory.  Other arguments the compiled into their own expansion
+     * sub programs.
+     */
+    iArg = 0;
+    for (;;)
+    {
+        /* Find the end of the argument. Check for $. */
+        char     ch         = '\0';
+        uint8_t  fDollar    = 0;
+        int32_t  cDepth     = 0;
+        uint32_t cchThisArg = 0;
+        while (cchThisArg < cchArgs)
+        {
+            ch = pchArgs[cchThisArg];
+            if (ch == chClose)
+            {
+                KMK_CC_ASSERT(cDepth > 0);
+                if (cDepth > 0)
+                    cDepth--;
+            }
+            else if (ch == chOpen)
+                cDepth++;
+            else if (ch == ',' && cDepth == 0 && iArg + 1 < cActualArgs)
+                break;
+            else if (ch == '$')
+                fDollar = 1;
+            cchThisArg++;
+        }
+
+        pInstr->aArgs[iArg].fSubprog = fDollar;
+        if (fDollar)
+        {
+            /* Compile it. */
+            int rc;
+            kmk_cc_block_realign(ppBlockTail);
+            rc = kmk_cc_exp_compile_subprog(ppBlockTail, pchArgs, cchThisArg, &pInstr->aArgs[iArg].u.Subprog);
+            if (rc != 0)
+                return rc;
+        }
+        else
+        {
+            /* Duplicate it. */
+            pInstr->aArgs[iArg].u.Plain.psz = kmk_cc_block_strdup(ppBlockTail, pchArgs, cchThisArg);
+            pInstr->aArgs[iArg].u.Plain.cch = cchThisArg;
+        }
+        iArg++;
+        if (ch != ',')
+            break;
+        pchArgs += cchThisArg + 1;
+        cchArgs -= cchThisArg + 1;
+    }
+    KMK_CC_ASSERT(iArg == cActualArgs);
+
+    /*
+     * Realign the allocator and take down the address of the next instruction.
+     */
+    kmk_cc_block_realign(ppBlockTail);
+    pInstr->FnCore.pNext = (PKMKCCEXPCORE)kmk_cc_block_get_next_ptr(*ppBlockTail);
+    return 0;
+}
+
+
+/**
+ * Emits a function call instruction taking plain arguments.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   ppBlockTail     Pointer to the allocator tail pointer.
+ * @param   pszFunction     The function name (const string from function.c).
+ * @param   pchArgs         Pointer to the arguments string, leading any blanks
+ *                          has been stripped.
+ * @param   cchArgs         The length of the arguments string.
+ * @param   cArgs           Number of arguments found.
+ * @param   chOpen          The char used to open the function call.
+ * @param   chClose         The char used to close the function call.
+ * @param   pfnFunction     The function implementation.
+ * @param   cMaxArgs        Maximum number of arguments the function takes.
+ */
+static void kmk_cc_exp_emit_plain_function(PKMKCCBLOCK *ppBlockTail, const char *pszFunction,
+                                           const char *pchArgs, uint32_t cchArgs, uint32_t cArgs, char chOpen, char chClose,
+                                           make_function_ptr_t pfnFunction, unsigned char cMaxArgs)
+{
+    uint32_t iArg;
+
+    /*
+     * The function instruction has variable size.  The maximum argument count
+     * isn't quite like the minium one.  Zero means no limit.  While a non-zero
+     * value means that any commas beyond the max will be taken to be part of
+     * the final argument.
+     */
+    uint32_t            cActualArgs = cArgs <= cMaxArgs || !cMaxArgs ? cArgs : cMaxArgs;
+    PKMKCCEXPPLAINFUNC  pInstr  = (PKMKCCEXPPLAINFUNC)kmk_cc_block_alloc_exp(ppBlockTail, KMKCCEXPPLAINFUNC_SIZE(cActualArgs));
+    pInstr->FnCore.Core.enmOpcode = kKmkCcExpInstr_PlainFunction;
+    pInstr->FnCore.cArgs          = cActualArgs;
+    pInstr->FnCore.pfnFunction    = pfnFunction;
+    pInstr->FnCore.pszFuncName    = pszFunction;
+    pInstr->FnCore.fDirty         = kmk_cc_is_dirty_function(pszFunction);
+
+    /*
+     * Parse the arguments.  Plain arguments gets duplicated in the program
+     * memory so that they are terminated and no extra processing is necessary
+     * later on.  ASSUMES that the function implementations do NOT change
+     * argument memory.
+     */
+    iArg = 0;
+    for (;;)
+    {
+        /* Find the end of the argument. */
+        char     ch         = '\0';
+        int32_t  cDepth     = 0;
+        uint32_t cchThisArg = 0;
+        while (cchThisArg < cchArgs)
+        {
+            ch = pchArgs[cchThisArg];
+            if (ch == chClose)
+            {
+                KMK_CC_ASSERT(cDepth > 0);
+                if (cDepth > 0)
+                    cDepth--;
+            }
+            else if (ch == chOpen)
+                cDepth++;
+            else if (ch == ',' && cDepth == 0 && iArg + 1 < cActualArgs)
+                break;
+            cchThisArg++;
+        }
+
+        /* Duplicate it. */
+        pInstr->apszArgs[iArg++] = kmk_cc_block_strdup(ppBlockTail, pchArgs, cchThisArg);
+        if (ch != ',')
+            break;
+        pchArgs += cchThisArg + 1;
+        cchArgs -= cchThisArg + 1;
+    }
+
+    KMK_CC_ASSERT(iArg == cActualArgs);
+    pInstr->apszArgs[iArg] = NULL;
+
+    /*
+     * Realign the allocator and take down the address of the next instruction.
+     */
+    kmk_cc_block_realign(ppBlockTail);
+    pInstr->FnCore.pNext = (PKMKCCEXPCORE)kmk_cc_block_get_next_ptr(*ppBlockTail);
+}
+
+
+/**
+ * Emits a kKmkCcExpInstr_DynamicVariable.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ * @param   pchNameExpr         The name of the variable (ASSUMED presistent
+ *                              thru-out the program life time).
+ * @param   cchNameExpr         The length of the variable name. If zero,
+ *                              nothing will be emitted.
+ */
+static int kmk_cc_exp_emit_dyn_variable(PKMKCCBLOCK *ppBlockTail, const char *pchNameExpr, uint32_t cchNameExpr)
+{
+    PKMKCCEXPDYNVAR pInstr;
+    int rc;
+    KMK_CC_ASSERT(cchNameExpr > 0);
+
+    pInstr = (PKMKCCEXPDYNVAR)kmk_cc_block_alloc_exp(ppBlockTail, sizeof(*pInstr));
+    pInstr->Core.enmOpcode = kKmkCcExpInstr_DynamicVariable;
+
+    rc = kmk_cc_exp_compile_subprog(ppBlockTail, pchNameExpr, cchNameExpr, &pInstr->Subprog);
+
+    pInstr->pNext = (PKMKCCEXPCORE)kmk_cc_block_get_next_ptr(*ppBlockTail);
+    return rc;
+}
+
+
+/**
+ * Emits either a kKmkCcExpInstr_PlainVariable or
+ * kKmkCcExpInstr_SearchAndReplacePlainVariable instruction.
+ *
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ * @param   pchName             The name of the variable.  (Does not need to be
+ *                              valid beyond the call.)
+ * @param   cchName             The length of the variable name. If zero,
+ *                              nothing will be emitted.
+ */
+static void kmk_cc_exp_emit_plain_variable_maybe_sr(PKMKCCBLOCK *ppBlockTail, const char *pchName, uint32_t cchName)
+{
+    if (cchName > 0)
+    {
+        /*
+         * Hopefully, we're not expected to do any search and replace on the
+         * expanded variable string later...  Requires both ':' and '='.
+         */
+        const char *pchEqual;
+        const char *pchColon = (const char *)memchr(pchName, ':', cchName);
+        if (   pchColon == NULL
+            || (pchEqual = (const char *)memchr(pchColon + 1, ':', cchName - (pchColon - pchName - 1))) == NULL
+            || pchEqual == pchEqual + 1)
+        {
+            PKMKCCEXPPLAINVAR pInstr = (PKMKCCEXPPLAINVAR)kmk_cc_block_alloc_exp(ppBlockTail, sizeof(*pInstr));
+            pInstr->Core.enmOpcode = kKmkCcExpInstr_PlainVariable;
+            pInstr->pszName = strcache2_add(&variable_strcache, pchName, cchName);
+        }
+        else if (pchColon != pchName)
+        {
+            /*
+             * Okay, we need to do search and replace the variable value.
+             * This is performed by patsubst_expand_pat using '%' patterns.
+             */
+            uint32_t            cchName2   = (uint32_t)(pchColon - pchName);
+            uint32_t            cchSearch  = (uint32_t)(pchEqual - pchColon - 1);
+            uint32_t            cchReplace = cchName - cchName2 - cchSearch - 2;
+            const char         *pchPct;
+            char               *psz;
+            PKMKCCEXPSRPLAINVAR pInstr;
+
+            pInstr = (PKMKCCEXPSRPLAINVAR)kmk_cc_block_alloc_exp(ppBlockTail, sizeof(*pInstr));
+            pInstr->Core.enmOpcode = kKmkCcExpInstr_SearchAndReplacePlainVariable;
+            pInstr->pszName = strcache2_add(&variable_strcache, pchName, cchName2);
+
+            /* Figure out the search pattern, unquoting percent chars.. */
+            psz = (char *)kmk_cc_block_byte_alloc(ppBlockTail, cchSearch + 2);
+            psz[0] = '%';
+            memcpy(psz + 1, pchColon + 1, cchSearch);
+            psz[1 + cchSearch] = '\0';
+            pchPct = find_percent(psz + 1); /* also performs unquoting */
+            if (pchPct)
+            {
+                pInstr->pszSearchPattern    = psz + 1;
+                pInstr->offPctSearchPattern = (uint32_t)(pchPct - psz - 1);
+            }
+            else
+            {
+                pInstr->pszSearchPattern    = psz;
+                pInstr->offPctSearchPattern = 0;
+            }
+
+            /* Figure out the replacement pattern, unquoting percent chars.. */
+            if (cchReplace == 0)
+            {
+                pInstr->pszReplacePattern    = "%";
+                pInstr->offPctReplacePattern = 0;
+            }
+            else
+            {
+                psz = (char *)kmk_cc_block_byte_alloc(ppBlockTail, cchReplace + 2);
+                psz[0] = '%';
+                memcpy(psz + 1, pchEqual + 1, cchReplace);
+                psz[1 + cchReplace] = '\0';
+                pchPct = find_percent(psz + 1); /* also performs unquoting */
+                if (pchPct)
+                {
+                    pInstr->pszReplacePattern    = psz + 1;
+                    pInstr->offPctReplacePattern = (uint32_t)(pchPct - psz - 1);
+                }
+                else
+                {
+                    pInstr->pszReplacePattern    = psz;
+                    pInstr->offPctReplacePattern = 0;
+                }
+            }
+
+            /* Note down where the next instruction is after realigning the allocator. */
+            kmk_cc_block_realign(ppBlockTail);
+            pInstr->pNext = (PKMKCCEXPCORE)kmk_cc_block_get_next_ptr(*ppBlockTail);
+        }
+    }
+}
+
+
+/**
+ * Emits a kKmkCcExpInstr_CopyString.
+ *
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ * @param   pchStr              The string to emit (ASSUMED presistent thru-out
+ *                              the program life time).
+ * @param   cchStr              The number of chars to copy. If zero, nothing
+ *                              will be emitted.
+ */
+static void kmk_cc_exp_emit_copy_string(PKMKCCBLOCK *ppBlockTail, const char *pchStr, uint32_t cchStr)
+{
+    if (cchStr > 0)
+    {
+        PKMKCCEXPCOPYSTRING pInstr = (PKMKCCEXPCOPYSTRING)kmk_cc_block_alloc_exp(ppBlockTail, sizeof(*pInstr));
+        pInstr->Core.enmOpcode = kKmkCcExpInstr_CopyString;
+        pInstr->cchCopy = cchStr;
+        pInstr->pachSrc = pchStr;
+    }
+}
+
+
+/**
+ * String expansion compilation function common to both normal and sub programs.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ * @param   pchStr              The expression to compile.
+ * @param   cchStr              The length of the expression to compile.
+ */
+static int kmk_cc_exp_compile_common(PKMKCCBLOCK *ppBlockTail, const char *pchStr, uint32_t cchStr)
+{
+    /*
+     * Process the string.
+     */
+    while (cchStr > 0)
+    {
+        /* Look for dollar sign, marks variable expansion or dollar-escape. */
+        int         rc;
+        const char *pchDollar = memchr(pchStr, '$', cchStr);
+        if (pchDollar)
+        {
+            /*
+             * Check for multiple dollar chars.
+             */
+            uint32_t offDollar = (uint32_t)(pchDollar - pchStr);
+            uint32_t cDollars  = 1;
+            while (   offDollar + cDollars < cchStr
+                   && pchStr[offDollar + cDollars] == '$')
+                cDollars++;
+
+            /*
+             * Emit a string copy for any preceeding stuff, including half of
+             * the dollars we found (dollar escape: $$ -> $).
+             * (kmk_cc_exp_emit_copy_string ignore zero length strings).
+             */
+            kmk_cc_exp_emit_copy_string(ppBlockTail, pchStr, offDollar + cDollars / 2);
+            pchStr += offDollar + cDollars;
+            cchStr -= offDollar + cDollars;
+
+            /*
+             * Odd number of dollar chars means there is a variable to expand
+             * or function to call.
+             */
+            if (cDollars & 1)
+            {
+                if (cchStr > 0)
+                {
+                    char const chOpen = *pchStr;
+                    if (chOpen == '(' || chOpen == '{')
+                    {
+                        /* There are several alternative ways of finding the ending
+                           parenthesis / braces.
+
+                           GNU make does one thing for functions and variable containing
+                           any '$' chars before the first closing char.  While for
+                           variables where a closing char comes before any '$' char, a
+                           simplified approach is taken.  This means that for example:
+
+                                Given VAR=var, the expressions "$(var())" and
+                                "$($(VAR)())" would be expanded differently.
+                                In the first case the variable "var(" would be
+                                used and in the second "var()".
+
+                           This code will not duplicate this weird behavior, but work
+                           the same regardless of whether there is a '$' char before
+                           the first closing char. */
+                        make_function_ptr_t pfnFunction;
+                        const char         *pszFunction;
+                        unsigned char       cMaxArgs;
+                        unsigned char       cMinArgs;
+                        char                fExpandArgs;
+                        char const          chClose   = chOpen == '(' ? ')' : '}';
+                        char                ch        = 0;
+                        uint32_t            cchName   = 0;
+                        uint32_t            cDepth    = 1;
+                        uint32_t            cMaxDepth = 1;
+                        cDollars = 0;
+
+                        pchStr++;
+                        cchStr--;
+
+                        /* First loop: Identify potential function calls and dynamic expansion. */
+                        KMK_CC_ASSERT(!func_char_map[(unsigned char)chOpen]);
+                        KMK_CC_ASSERT(!func_char_map[(unsigned char)chClose]);
+                        KMK_CC_ASSERT(!func_char_map[(unsigned char)'$']);
+                        while (cchName < cchStr)
+                        {
+                            ch = pchStr[cchName];
+                            if (!func_char_map[(unsigned char)ch])
+                                break;
+                            cchName++;
+                        }
+
+                        if (   cchName >= MIN_FUNCTION_LENGTH
+                            && cchName <= MAX_FUNCTION_LENGTH
+                            && (ISBLANK(ch) || ch == chClose || cchName == cchStr)
+                            && (pfnFunction = lookup_function_for_compiler(pchStr, cchName, &cMinArgs, &cMaxArgs,
+                                                                           &fExpandArgs, &pszFunction)) != NULL)
+                        {
+                            /*
+                             * It's a function invocation, we should count parameters while
+                             * looking for the end.
+                             * Note! We use cchName for the length of the argument list.
+                             */
+                            uint32_t cArgs = 1;
+                            if (ch != chClose)
+                            {
+                                /* Skip leading spaces before the first arg. */
+                                cchName++;
+                                while (cchName < cchStr && ISBLANK(pchStr[cchName]))
+                                    cchName++;
+
+                                pchStr += cchName;
+                                cchStr -= cchName;
+                                cchName = 0;
+
+                                while (cchName < cchStr)
+                                {
+                                    ch = pchStr[cchName];
+                                    if (ch == ',')
+                                    {
+                                        if (cDepth == 1)
+                                            cArgs++;
+                                    }
+                                    else if (ch == chClose)
+                                    {
+                                        if (!--cDepth)
+                                            break;
+                                    }
+                                    else if (ch == chOpen)
+                                    {
+                                        if (++cDepth > cMaxDepth)
+                                            cMaxDepth = cDepth;
+                                    }
+                                    else if (ch == '$')
+                                        cDollars++;
+                                    cchName++;
+                                }
+                            }
+                            else
+                            {
+                                pchStr += cchName;
+                                cchStr -= cchName;
+                                cchName = 0;
+                            }
+                            if (cArgs < cMinArgs)
+                            {
+                                fatal(NULL, _("Function '%s' takes a minimum of %d arguments: %d given"),
+                                      pszFunction, (int)cMinArgs, (int)cArgs);
+                                return -1; /* not reached */
+                            }
+                            if (cDepth != 0)
+                            {
+                                fatal(NULL, chOpen == '('
+                                      ? _("Missing closing parenthesis calling '%s'") : _("Missing closing braces calling '%s'"),
+                                      pszFunction);
+                                return -1; /* not reached */
+                            }
+                            if (cMaxDepth > 16 && fExpandArgs)
+                            {
+                                fatal(NULL, _("Too many levels of nested function arguments expansions: %s"), pszFunction);
+                                return -1; /* not reached */
+                            }
+                            if (!fExpandArgs || cDollars == 0)
+                                kmk_cc_exp_emit_plain_function(ppBlockTail, pszFunction, pchStr, cchName,
+                                                               cArgs, chOpen, chClose, pfnFunction, cMaxArgs);
+                            else
+                            {
+                                rc = kmk_cc_exp_emit_dyn_function(ppBlockTail, pszFunction, pchStr, cchName,
+                                                                  cArgs, chOpen, chClose, pfnFunction, cMaxArgs);
+                                if (rc != 0)
+                                    return rc;
+                            }
+                        }
+                        else
+                        {
+                            /*
+                             * Variable, find the end while checking whether anything needs expanding.
+                             */
+                            if (ch == chClose)
+                                cDepth = 0;
+                            else if (cchName < cchStr)
+                            {
+                                if (ch != '$')
+                                {
+                                    /* Second loop: Look for things that needs expanding. */
+                                    while (cchName < cchStr)
+                                    {
+                                        ch = pchStr[cchName];
+                                        if (ch == chClose)
+                                        {
+                                            if (!--cDepth)
+                                                break;
+                                        }
+                                        else if (ch == chOpen)
+                                        {
+                                            if (++cDepth > cMaxDepth)
+                                                cMaxDepth = cDepth;
+                                        }
+                                        else if (ch == '$')
+                                            break;
+                                        cchName++;
+                                    }
+                                }
+                                if (ch == '$')
+                                {
+                                    /* Third loop: Something needs expanding, just find the end. */
+                                    cDollars = 1;
+                                    cchName++;
+                                    while (cchName < cchStr)
+                                    {
+                                        ch = pchStr[cchName];
+                                        if (ch == chClose)
+                                        {
+                                            if (!--cDepth)
+                                                break;
+                                        }
+                                        else if (ch == chOpen)
+                                        {
+                                            if (++cDepth > cMaxDepth)
+                                                cMaxDepth = cDepth;
+                                        }
+                                        cchName++;
+                                    }
+                                }
+                            }
+                            if (cDepth > 0) /* After warning, we just assume they're all there. */
+                                error(NULL, chOpen == '(' ? _("Missing closing parenthesis ") : _("Missing closing braces"));
+                            if (cMaxDepth >= 16)
+                            {
+                                fatal(NULL, _("Too many levels of nested variable expansions: '%.*s'"), (int)cchName + 2, pchStr - 1);
+                                return -1; /* not reached */
+                            }
+                            if (cDollars == 0)
+                                kmk_cc_exp_emit_plain_variable_maybe_sr(ppBlockTail, pchStr, cchName);
+                            else
+                            {
+                                rc = kmk_cc_exp_emit_dyn_variable(ppBlockTail, pchStr, cchName);
+                                if (rc != 0)
+                                    return rc;
+                            }
+                        }
+                        pchStr += cchName + 1;
+                        cchStr -= cchName + (cDepth == 0);
+                    }
+                    else
+                    {
+                        /* Single character variable name. */
+                        kmk_cc_exp_emit_plain_variable_maybe_sr(ppBlockTail, pchStr, 1);
+                        pchStr++;
+                        cchStr--;
+                    }
+                }
+                else
+                {
+                    error(NULL, _("Unexpected end of string after $"));
+                    break;
+                }
+            }
+        }
+        else
+        {
+            /*
+             * Nothing more to expand, the remainder is a simple string copy.
+             */
+            kmk_cc_exp_emit_copy_string(ppBlockTail, pchStr, cchStr);
+            break;
+        }
+    }
+
+    /*
+     * Emit final instruction.
+     */
+    kmk_cc_exp_emit_return(ppBlockTail);
+    return 0;
+}
+
+
+/**
+ * Initializes string expansion program statistics.
+ * @param   pStats              Pointer to the statistics structure to init.
+ */
+static void kmk_cc_exp_stats_init(PKMKCCEXPSTATS pStats)
+{
+    pStats->cchAvg = 0;
+}
+
+
+/**
+ * Compiles a string expansion subprogram.
+ *
+ * The caller typically make a call to kmk_cc_block_get_next_ptr after this
+ * function returns to figure out where to continue executing.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   ppBlockTail         Pointer to the allocator tail pointer.
+ * @param   pchStr              Pointer to the string to compile an expansion
+ *                              program for (ASSUMED to be valid for the
+ *                              lifetime of the program).
+ * @param   cchStr              The length of the string to compile. Expected to
+ *                              be at least on char long.
+ * @param   pSubprog            The subprogram structure to initialize.
+ */
+static int kmk_cc_exp_compile_subprog(PKMKCCBLOCK *ppBlockTail, const char *pchStr, uint32_t cchStr, PKMKCCEXPSUBPROG pSubprog)
+{
+    KMK_CC_ASSERT(cchStr > 0);
+    pSubprog->pFirstInstr = (PKMKCCEXPCORE)kmk_cc_block_get_next_ptr(*ppBlockTail);
+    kmk_cc_exp_stats_init(&pSubprog->Stats);
+    return kmk_cc_exp_compile_common(ppBlockTail, pchStr, cchStr);
+}
+
+
+/**
+ * Compiles a string expansion program.
+ *
+ * @returns Pointer to the program on success, NULL on failure.
+ * @param   pchStr              Pointer to the string to compile an expansion
+ *                              program for (ASSUMED to be valid for the
+ *                              lifetime of the program).
+ * @param   cchStr              The length of the string to compile. Expected to
+ *                              be at least on char long.
+ */
+static PKMKCCEXPPROG kmk_cc_exp_compile(const char *pchStr, uint32_t cchStr)
+{
+    /*
+     * Estimate block size, allocate one and initialize it.
+     */
+    PKMKCCEXPPROG   pProg;
+    PKMKCCBLOCK     pBlock;
+    pProg = kmk_cc_block_alloc_first(&pBlock, sizeof(*pProg),
+                                     (kmk_cc_count_dollars(pchStr, cchStr) + 4)  * 8);
+    if (pProg)
+    {
+        pProg->pBlockTail   = pBlock;
+        pProg->pFirstInstr  = (PKMKCCEXPCORE)kmk_cc_block_get_next_ptr(pBlock);
+        kmk_cc_exp_stats_init(&pProg->Stats);
+        pProg->cRefs        = 1;
+#ifdef KMK_CC_STRICT
+        pProg->uInputHash   = kmk_cc_debug_string_hash_n(0, pchStr, cchStr);
+#endif
+
+        /*
+         * Join forces with the subprogram compilation code.
+         */
+        if (kmk_cc_exp_compile_common(&pProg->pBlockTail, pchStr, cchStr) == 0)
+        {
+#ifdef KMK_CC_WITH_STATS
+            pBlock = pProg->pBlockTail;
+            if (!pBlock->pNext)
+                g_cSingleBlockExpProgs++;
+            else if (!pBlock->pNext->pNext)
+                g_cTwoBlockExpProgs++;
+            else
+                g_cMultiBlockExpProgs++;
+            for (; pBlock; pBlock = pBlock->pNext)
+            {
+                g_cBlocksAllocatedExpProgs++;
+                g_cbAllocatedExpProgs += pBlock->cbBlock;
+                g_cbUnusedMemExpProgs += pBlock->cbBlock - pBlock->offNext;
+            }
+#endif
+            return pProg;
+        }
+        kmk_cc_block_free_list(pProg->pBlockTail);
+    }
+    return NULL;
+}
+
+
+/**
+ * Updates the recursive_without_dollar member of a variable structure.
+ *
+ * This avoid compiling string expansion programs with only a CopyString
+ * instruction.  By setting recursive_without_dollar to 1, code calling
+ * kmk_cc_compile_variable_for_expand and kmk_exec_expand_to_var_buf will
+ * instead treat start treating it as a simple variable, which is faster.
+ *
+ * @returns The updated recursive_without_dollar value.
+ * @param   pVar        Pointer to the variable.
+ */
+static int kmk_cc_update_variable_recursive_without_dollar(struct variable *pVar)
+{
+    int fValue;
+    KMK_CC_ASSERT(pVar->recursive_without_dollar == 0);
+
+    if (memchr(pVar->value, '$', pVar->value_length))
+        fValue = -1;
+    else
+        fValue = 1;
+    pVar->recursive_without_dollar = fValue;
+
+    return fValue;
+}
+
+
+/**
+ * Compiles a variable for string expansion.
+ *
+ * @returns Pointer to the string expansion program on success, NULL if no
+ *          program was created.
+ * @param   pVar        Pointer to the variable.
+ */
+struct kmk_cc_expandprog *kmk_cc_compile_variable_for_expand(struct variable *pVar)
+{
+    KMK_CC_ASSERT(strlen(pVar->value) == pVar->value_length);
+    KMK_CC_ASSERT(!pVar->expandprog);
+    KMK_CC_ASSERT(pVar->recursive_without_dollar <= 0);
+
+    if (   !pVar->expandprog
+        && pVar->recursive)
+    {
+        if (   pVar->recursive_without_dollar < 0
+            || (   pVar->recursive_without_dollar == 0
+                && kmk_cc_update_variable_recursive_without_dollar(pVar) < 0) )
+        {
+            pVar->expandprog = kmk_cc_exp_compile(pVar->value, pVar->value_length);
+            g_cVarForExpandCompilations++;
+        }
+    }
+    return pVar->expandprog;
+}
+
+
+/**
+ * String expansion execution worker for outputting a variable.
+ *
+ * @returns The new variable buffer position.
+ * @param   pVar        The variable to reference.
+ * @param   pchDst      The current variable buffer position.
+ */
+static char *kmk_exec_expand_worker_reference_variable(struct variable *pVar, char *pchDst)
+{
+    if (pVar->value_length > 0)
+    {
+        if (!pVar->recursive || IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR(pVar))
+            pchDst = variable_buffer_output(pchDst, pVar->value, pVar->value_length);
+        else
+            pchDst = reference_recursive_variable(pchDst, pVar);
+    }
+    else if (pVar->append)
+        pchDst = reference_recursive_variable(pchDst, pVar);
+    return pchDst;
+}
+
+
+/**
+ * Executes a stream string expansion instructions, outputting to the current
+ * varaible buffer.
+ *
+ * @returns The new variable buffer position.
+ * @param   pInstrCore      The instruction to start executing at.
+ * @param   pchDst          The current variable buffer position.
+ */
+static char *kmk_exec_expand_instruction_stream_to_var_buf(PKMKCCEXPCORE pInstrCore, char *pchDst)
+{
+    for (;;)
+    {
+        switch (pInstrCore->enmOpcode)
+        {
+            case kKmkCcExpInstr_CopyString:
+            {
+                PKMKCCEXPCOPYSTRING pInstr = (PKMKCCEXPCOPYSTRING)pInstrCore;
+                pchDst = variable_buffer_output(pchDst, pInstr->pachSrc, pInstr->cchCopy);
+
+                pInstrCore = &(pInstr + 1)->Core;
+                break;
+            }
+
+            case kKmkCcExpInstr_PlainVariable:
+            {
+                PKMKCCEXPPLAINVAR pInstr = (PKMKCCEXPPLAINVAR)pInstrCore;
+                struct variable  *pVar = lookup_variable_strcached(pInstr->pszName);
+                if (pVar)
+                    pchDst = kmk_exec_expand_worker_reference_variable(pVar, pchDst);
+                else
+                    warn_undefined(pInstr->pszName, strcache2_get_len(&variable_strcache, pInstr->pszName));
+
+                pInstrCore = &(pInstr + 1)->Core;
+                break;
+            }
+
+            case kKmkCcExpInstr_DynamicVariable:
+            {
+                PKMKCCEXPDYNVAR  pInstr = (PKMKCCEXPDYNVAR)pInstrCore;
+                struct variable *pVar;
+                uint32_t         cchName;
+                char            *pszName = kmk_exec_expand_subprog_to_tmp(&pInstr->Subprog, &cchName);
+                char            *pszColon = (char *)memchr(pszName, ':', cchName);
+                char            *pszEqual;
+                if (   pszColon == NULL
+                    || (pszEqual = (char *)memchr(pszColon + 1, '=', &pszName[cchName] - pszColon - 1)) == NULL
+                    || pszEqual == pszColon + 1)
+                {
+                    pVar = lookup_variable(pszName, cchName);
+                    if (pVar)
+                        pchDst = kmk_exec_expand_worker_reference_variable(pVar, pchDst);
+                    else
+                        warn_undefined(pszName, cchName);
+                }
+                else if (pszColon != pszName)
+                {
+                    /*
+                     * Oh, we have to do search and replace. How tedious.
+                     * Since the variable name is a temporary buffer, we can transform
+                     * the strings into proper search and replacement patterns directly.
+                     */
+                    pVar = lookup_variable(pszName, pszColon - pszName);
+                    if (pVar)
+                    {
+                        char const *pszExpandedVarValue = pVar->recursive ? recursively_expand(pVar) : pVar->value;
+                        char       *pszSearchPat  = pszColon + 1;
+                        char       *pszReplacePat = pszEqual + 1;
+                        const char *pchPctSearchPat;
+                        const char *pchPctReplacePat;
+
+                        *pszEqual = '\0';
+                        pchPctSearchPat = find_percent(pszSearchPat);
+                        pchPctReplacePat = find_percent(pszReplacePat);
+
+                        if (!pchPctReplacePat)
+                        {
+                            if (pszReplacePat[-2] != '\0') /* On the offchance that a pct was unquoted by find_percent. */
+                            {
+                                memmove(pszName + 1, pszSearchPat, pszReplacePat - pszSearchPat);
+                                if (pchPctSearchPat)
+                                    pchPctSearchPat -= pszSearchPat - &pszName[1];
+                                pszSearchPat = &pszName[1];
+                            }
+                            pchPctReplacePat = --pszReplacePat;
+                            *pszReplacePat = '%';
+                        }
+
+                        if (!pchPctSearchPat)
+                        {
+                            pchPctSearchPat = --pszSearchPat;
+                            *pszSearchPat = '%';
+                        }
+
+                        pchDst = patsubst_expand_pat(pchDst, pszExpandedVarValue,
+                                                     pszSearchPat, pszReplacePat,
+                                                     pchPctSearchPat, pchPctReplacePat);
+
+                        if (pVar->recursive)
+                            free((void *)pszExpandedVarValue);
+                    }
+                    else
+                        warn_undefined(pszName, pszColon - pszName);
+                }
+                free(pszName);
+
+                pInstrCore = pInstr->pNext;
+                break;
+            }
+
+
+            case kKmkCcExpInstr_SearchAndReplacePlainVariable:
+            {
+                PKMKCCEXPSRPLAINVAR pInstr = (PKMKCCEXPSRPLAINVAR)pInstrCore;
+                struct variable    *pVar = lookup_variable_strcached(pInstr->pszName);
+                if (pVar)
+                {
+                    char const *pszExpandedVarValue = pVar->recursive ? recursively_expand(pVar) : pVar->value;
+                    pchDst = patsubst_expand_pat(pchDst,
+                                                 pszExpandedVarValue,
+                                                 pInstr->pszSearchPattern,
+                                                 pInstr->pszReplacePattern,
+                                                 &pInstr->pszSearchPattern[pInstr->offPctSearchPattern],
+                                                 &pInstr->pszReplacePattern[pInstr->offPctReplacePattern]);
+                    if (pVar->recursive)
+                        free((void *)pszExpandedVarValue);
+                }
+                else
+                    warn_undefined(pInstr->pszName, strcache2_get_len(&variable_strcache, pInstr->pszName));
+
+                pInstrCore = pInstr->pNext;
+                break;
+            }
+
+            case kKmkCcExpInstr_PlainFunction:
+            {
+                PKMKCCEXPPLAINFUNC pInstr = (PKMKCCEXPPLAINFUNC)pInstrCore;
+                uint32_t iArg;
+                if (!pInstr->FnCore.fDirty)
+                {
+#ifdef KMK_CC_STRICT
+                    uint32_t uCrcBefore = 0;
+                    uint32_t uCrcAfter = 0;
+                    iArg = pInstr->FnCore.cArgs;
+                    while (iArg-- > 0)
+                        uCrcBefore = kmk_cc_debug_string_hash(uCrcBefore, pInstr->apszArgs[iArg]);
+#endif
+
+                    pchDst = pInstr->FnCore.pfnFunction(pchDst, (char **)&pInstr->apszArgs[0], pInstr->FnCore.pszFuncName);
+
+#ifdef KMK_CC_STRICT
+                    iArg = pInstr->FnCore.cArgs;
+                    while (iArg-- > 0)
+                        uCrcAfter = kmk_cc_debug_string_hash(uCrcAfter, pInstr->apszArgs[iArg]);
+                    KMK_CC_ASSERT(uCrcBefore == uCrcAfter);
+#endif
+                }
+                else
+                {
+                    char **papszShadowArgs = xmalloc((pInstr->FnCore.cArgs * 2 + 1) * sizeof(papszShadowArgs[0]));
+                    char **papszArgs = &papszShadowArgs[pInstr->FnCore.cArgs];
+
+                    iArg = pInstr->FnCore.cArgs;
+                    papszArgs[iArg] = NULL;
+                    while (iArg-- > 0)
+                        papszArgs[iArg] = papszShadowArgs[iArg] = xstrdup(pInstr->apszArgs[iArg]);
+
+                    pchDst = pInstr->FnCore.pfnFunction(pchDst, (char **)&pInstr->apszArgs[0], pInstr->FnCore.pszFuncName);
+
+                    iArg = pInstr->FnCore.cArgs;
+                    while (iArg-- > 0)
+                        free(papszShadowArgs[iArg]);
+                    free(papszShadowArgs);
+                }
+
+                pInstrCore = pInstr->FnCore.pNext;
+                break;
+            }
+
+            case kKmkCcExpInstr_DynamicFunction:
+            {
+                PKMKCCEXPDYNFUNC pInstr = (PKMKCCEXPDYNFUNC)pInstrCore;
+                char           **papszArgsShadow = xmalloc( (pInstr->FnCore.cArgs * 2 + 1) * sizeof(char *));
+                char           **papszArgs = &papszArgsShadow[pInstr->FnCore.cArgs];
+                uint32_t         iArg;
+
+                if (!pInstr->FnCore.fDirty)
+                {
+#ifdef KMK_CC_STRICT
+                    uint32_t    uCrcBefore = 0;
+                    uint32_t    uCrcAfter = 0;
+#endif
+                    iArg = pInstr->FnCore.cArgs;
+                    papszArgs[iArg] = NULL;
+                    while (iArg-- > 0)
+                    {
+                        char *pszArg;
+                        if (pInstr->aArgs[iArg].fSubprog)
+                            pszArg = kmk_exec_expand_subprog_to_tmp(&pInstr->aArgs[iArg].u.Subprog, NULL);
+                        else
+                            pszArg = (char *)pInstr->aArgs[iArg].u.Plain.psz;
+                        papszArgsShadow[iArg] = pszArg;
+                        papszArgs[iArg]       = pszArg;
+#ifdef KMK_CC_STRICT
+                        uCrcBefore = kmk_cc_debug_string_hash(uCrcBefore, pszArg);
+#endif
+                    }
+                    pchDst = pInstr->FnCore.pfnFunction(pchDst, papszArgs, pInstr->FnCore.pszFuncName);
+
+                    iArg = pInstr->FnCore.cArgs;
+                    while (iArg-- > 0)
+                    {
+#ifdef KMK_CC_STRICT
+                        KMK_CC_ASSERT(papszArgsShadow[iArg] == papszArgs[iArg]);
+                        uCrcAfter = kmk_cc_debug_string_hash(uCrcAfter, papszArgsShadow[iArg]);
+#endif
+                        if (pInstr->aArgs[iArg].fSubprog)
+                            free(papszArgsShadow[iArg]);
+                    }
+                    KMK_CC_ASSERT(uCrcBefore == uCrcAfter);
+                }
+                else
+                {
+                    iArg = pInstr->FnCore.cArgs;
+                    papszArgs[iArg] = NULL;
+                    while (iArg-- > 0)
+                    {
+                        char *pszArg;
+                        if (pInstr->aArgs[iArg].fSubprog)
+                            pszArg = kmk_exec_expand_subprog_to_tmp(&pInstr->aArgs[iArg].u.Subprog, NULL);
+                        else
+                            pszArg = xstrdup(pInstr->aArgs[iArg].u.Plain.psz);
+                        papszArgsShadow[iArg] = pszArg;
+                        papszArgs[iArg]       = pszArg;
+                    }
+
+                    pchDst = pInstr->FnCore.pfnFunction(pchDst, papszArgs, pInstr->FnCore.pszFuncName);
+
+                    iArg = pInstr->FnCore.cArgs;
+                    while (iArg-- > 0)
+                        free(papszArgsShadow[iArg]);
+                }
+                free(papszArgsShadow);
+
+                pInstrCore = pInstr->FnCore.pNext;
+                break;
+            }
+
+            case kKmkCcExpInstr_Jump:
+            {
+                PKMKCCEXPJUMP pInstr = (PKMKCCEXPJUMP)pInstrCore;
+                pInstrCore = pInstr->pNext;
+                break;
+            }
+
+            case kKmkCcExpInstr_Return:
+                return pchDst;
+
+            default:
+                fatal(NULL, _("Unknown string expansion opcode: %d (%#x)"),
+                      (int)pInstrCore->enmOpcode, (int)pInstrCore->enmOpcode);
+                return NULL;
+        }
+    }
+}
+
+
+/**
+ * Updates the string expansion statistics.
+ *
+ * @param   pStats              The statistics structure to update.
+ * @param   cchResult           The result lenght.
+ */
+void kmk_cc_exp_stats_update(PKMKCCEXPSTATS pStats, uint32_t cchResult)
+{
+    /*
+     * The average is simplified and not an exact average for every
+     * expansion that has taken place.
+     */
+    pStats->cchAvg = (pStats->cchAvg * 7 + cchResult) / 8;
+}
+
+
+/**
+ * Execute a string expansion subprogram, outputting to a new heap buffer.
+ *
+ * @returns Pointer to the output buffer (hand to free when done).
+ * @param   pSubprog          The subprogram to execute.
+ * @param   pcchResult        Where to return the size of the result. Optional.
+ */
+static char *kmk_exec_expand_subprog_to_tmp(PKMKCCEXPSUBPROG pSubprog, uint32_t *pcchResult)
+{
+    char           *pchOldVarBuf;
+    unsigned int    cbOldVarBuf;
+    char           *pchDst;
+    char           *pszResult;
+    uint32_t        cchResult;
+
+    /*
+     * Temporarily replace the variable buffer while executing the instruction
+     * stream for this subprogram.
+     */
+    pchDst = install_variable_buffer_with_hint(&pchOldVarBuf, &cbOldVarBuf,
+                                               pSubprog->Stats.cchAvg ? pSubprog->Stats.cchAvg + 32 : 256);
+
+    pchDst = kmk_exec_expand_instruction_stream_to_var_buf(pSubprog->pFirstInstr, pchDst);
+
+    /* Ensure that it's terminated. */
+    pchDst = variable_buffer_output(pchDst, "\0", 1) - 1;
+
+    /* Grab the result buffer before restoring the previous one. */
+    pszResult = variable_buffer;
+    cchResult = (uint32_t)(pchDst - pszResult);
+    if (pcchResult)
+        *pcchResult = cchResult;
+    kmk_cc_exp_stats_update(&pSubprog->Stats, cchResult);
+
+    variable_buffer = pchOldVarBuf;
+    variable_buffer_length = cbOldVarBuf;
+
+    return pszResult;
+}
+
+
+/**
+ * Execute a string expansion program, outputting to the current variable
+ * buffer.
+ *
+ * @returns New variable buffer position.
+ * @param   pProg               The program to execute.
+ * @param   pchDst              The current varaible buffer position.
+ */
+static char *kmk_exec_expand_prog_to_var_buf(PKMKCCEXPPROG pProg, char *pchDst)
+{
+    uint32_t cchResult;
+    uint32_t offStart = (uint32_t)(pchDst - variable_buffer);
+
+    if (pProg->Stats.cchAvg >= variable_buffer_length - offStart)
+        pchDst = ensure_variable_buffer_space(pchDst, offStart + pProg->Stats.cchAvg + 32);
+
+    KMK_CC_ASSERT(pProg->cRefs > 0);
+    pProg->cRefs++;
+
+    pchDst = kmk_exec_expand_instruction_stream_to_var_buf(pProg->pFirstInstr, pchDst);
+
+    pProg->cRefs--;
+    KMK_CC_ASSERT(pProg->cRefs > 0);
+
+    cchResult = (uint32_t)(pchDst - variable_buffer);
+    KMK_CC_ASSERT(cchResult >= offStart);
+    cchResult -= offStart;
+    kmk_cc_exp_stats_update(&pProg->Stats, cchResult);
+    g_cVarForExpandExecs++;
+
+    return pchDst;
+}
+
+
+/**
+ * Expands a variable into a variable buffer using its expandprog.
+ *
+ * @returns The new variable buffer position.
+ * @param   pVar        Pointer to the variable.  Must have a program.
+ * @param   pchDst      Pointer to the current variable buffer position.
+ */
+char *kmk_exec_expand_to_var_buf(struct variable *pVar, char *pchDst)
+{
+    KMK_CC_ASSERT(pVar->expandprog);
+    KMK_CC_ASSERT(pVar->expandprog->uInputHash == kmk_cc_debug_string_hash(0, pVar->value));
+    return kmk_exec_expand_prog_to_var_buf(pVar->expandprog, pchDst);
+}
+
+
+
+
+
+/*
+ *
+ * Makefile evaluation programs.
+ * Makefile evaluation programs.
+ * Makefile evaluation programs.
+ *
+ */
+
+static size_t kmk_cc_eval_detect_eol_style(char *pchFirst, char *pchSecond, const char *pszContent, size_t cchContent)
+{
+    /* Look for LF first. */
+    const char *pszTmp = (const char *)memchr(pszContent, '\n', cchContent);
+    if (pszTmp)
+    {
+        /* CRLF? */
+        if (pszTmp != pszContent && pszTmp[-1] == '\r')
+        {
+            *pchFirst = '\r';
+            *pchSecond = '\n';
+            return 2;
+        }
+
+        /* No, LF or LFCR. (pszContent is zero terminated, so no bounds checking necessary.) */
+        *pchFirst = '\n';
+        if (pszTmp[1] != '\r')
+        {
+            *pchSecond = 0;
+            return 1;
+        }
+        *pchSecond = '\r';
+        return 2;
+    }
+
+    /* Probably no EOLs here. */
+    if (memchr(pszContent, '\r', cchContent) == NULL)
+    {
+        *pchSecond = *pchFirst = 0;
+        return 0;
+    }
+
+    /* kind of unlikely */
+    *pchFirst  = '\r';
+    *pchSecond = 0;
+    return 1;
+}
+
+
+#if 0
+/**
+ * Checks whether we've got an EOL escape sequence or not.
+ *
+ * @returns non-zero if escaped EOL, 0 if not (i.e. actual EOL).
+ * @param   pszContent          The string pointer @a offEol is relative to.
+ * @param   offEol              The offset of the first EOL char.
+ */
+static unsigned kmk_cc_eval_is_eol_escape_seq(const char *pszContent, size_t offEol)
+{
+    /* The caller has already checked out two backslashes. */
+    size_t offFirstBackslash = offEol;
+    KMK_CC_ASSERT(offFirstBackslash >= 2);
+    offFirstBackslash -= 2;
+
+    /* Find the first backslash. */
+    while (offFirstBackslash > 0 && pszContent[offFirstBackslash - 1] == '\\')
+        offFirstBackslash--;
+
+    /* Odd number -> escaped EOL; Even number -> real EOL; */
+    return (offEol - offFirstBackslash) & 1;
+}
+#endif
+
+
+
+/**
+ * Tokens (for KMKCCEVALWORD).
+ */
+typedef enum kmk_cc_eval_token
+{
+    /** Invalid token value 0. */
+    kKmkCcEvalToken_Invalid = 0,
+
+    /** Plain word. */
+    kKmkCcEvalToken_WordPlain,
+    /** Plain word with one or more escaped EOLs. (Currently not possible.) */
+    kKmkCcEvalToken_WordPlainWithEscEol,
+    /** Word that maybe in need of expanding. */
+    kKmkCcEvalToken_WordWithDollar,
+    /** Word that is in need of expanding and include one or more escped EOLs. */
+    kKmkCcEvalToken_WordWithDollarAndEscEol,
+
+    /** Recipe colon. */
+    kKmkCcEvalToken_colon,
+    /** Recipe double colon.   */
+    kKmkCcEvalToken_double_colon,
+    /** Recipe multi target plus. */
+    kKmkCcEvalToken_plus,
+    /** Recipe multi target plus-maybe (+|). */
+    kKmkCcEvalToken_plus_maybe,
+    /** Recipe semicolon. */
+    kKmkCcEvalToken_semicolon,
+
+    /** End of valid token values (not included). */
+    kKmkCcEvalToken_End
+} KMKCCEVALTOKEN;
+
+/**
+ * A tokenized word.
+ */
+typedef struct kmk_cc_eval_word
+{
+    /** The token word (lexeme).   */
+    const char         *pchWord;
+    /** The length of the word (lexeme). */
+    uint32_t            cchWord;
+    /** The token classification. */
+    KMKCCEVALTOKEN      enmToken;
+} KMKCCEVALWORD;
+typedef KMKCCEVALWORD *PKMKCCEVALWORD;
+typedef KMKCCEVALWORD const *PCKMKCCEVALWORD;
+
+
+/**
+ * Escaped end-of-line sequence in the current line.
+ */
+typedef struct KMKCCEVALESCEOL
+{
+    /** Offset at which the EOL escape sequence starts for a non-command line. */
+    size_t              offEsc;
+    /** Offset of the newline sequence. */
+    size_t              offEol;
+} KMKCCEVALESCEOL;
+typedef KMKCCEVALESCEOL *PKMKCCEVALESCEOL;
+
+
+/**
+ * String copy segment.
+ */
+typedef struct KMKCCEVALSTRCPYSEG
+{
+    /** The start. */
+    const char         *pchSrc;
+    /** The number of chars to copy and whether to prepend space.
+     * Negative values indicates that we should prepend a space. */
+    ssize_t             cchSrcAndPrependSpace;
+} KMKCCEVALSTRCPYSEG;
+typedef KMKCCEVALSTRCPYSEG *PKMKCCEVALSTRCPYSEG;
+typedef KMKCCEVALSTRCPYSEG const *PCKMKCCEVALSTRCPYSEG;
+
+
+typedef struct KMKCCEVALCOMPILER
+{
+    /** Pointer to the KMKCCEVALPROG::pBlockTail member.  */
+    PKMKCCBLOCK        *ppBlockTail;
+
+    /** @name Line parsing state.
+     * @{ */
+    /** Offset of newline escape sequences in the current line.
+     * This is only applicable if cEscEols is not zero.  */
+    PKMKCCEVALESCEOL    paEscEols;
+    /** The number of number of paEscEols entries we've allocated. */
+    unsigned            cEscEolsAllocated;
+    /** Number of escaped EOLs (line count - 1). */
+    unsigned            cEscEols;
+    /** The paEscEols entry corresponding to the current parsing location.
+     * Still to be seen how accurate this can be made to be. */
+    unsigned            iEscEol;
+
+    /** The current line number for error handling / debugging (1-based). */
+    unsigned            iLine;
+    /** The start offset (into pchContent) of the current line. */
+    size_t              offLine;
+    /** Length of the current line, sans the final EOL and comments. */
+    size_t              cchLine;
+    /** Length of the current line, sans the final EOL but with comments. */
+    size_t              cchLineWithComments;
+    /** For 'define' only, the start offset of the next line.  Modified to the
+     * line following 'endef'. */
+    size_t              offNext;
+
+    /** The first char in an EOL sequence.
+     * We ASSUMES that this char won't appear in any other sequence in the file,
+     * thus skipping matching any subsequent chars. */
+    char                chFirstEol;
+    /** The second char in an EOL sequence, if applicable. */
+    char                chSecondEol;
+
+    /** The length of the EOL sequence. */
+    size_t              cchEolSeq;
+    /** The minimum length of an esacped EOL sequence (cchEolSeq + 1). */
+    size_t              cchEscEolSeq;
+
+    /** String copy segments. */
+    PKMKCCEVALSTRCPYSEG paStrCopySegs;
+    /** The number of segments that has been prepared. */
+    unsigned            cStrCopySegs;
+    /** The number of segments we've allocated. */
+    unsigned            cStrCopySegsAllocated;
+    /** @} */
+
+
+    /** @name Recipe state.
+     * @{ */
+    /** Set if we're working on a recipe. */
+    PKMKCCEVALRECIPE    pRecipe;
+    /** Set for ignoring recipes without targets (SunOS 4 Make). */
+    uint8_t             fNoTargetRecipe;
+    /** The command prefix character. */
+    char                chCmdPrefix;
+    /** @} */
+
+    /** @name Tokenzied words.
+     * @{ */
+    unsigned            cWords;
+    unsigned            cWordsAllocated;
+    PKMKCCEVALWORD      paWords;
+    /** @} */
+
+    /** @name Conditionals.
+     * @{ */
+    /** Current conditional stack depth. */
+    unsigned            cIfs;
+    /** The conditional directive stack. */
+    PKMKCCEVALIFCORE    apIfs[KMK_CC_EVAL_MAX_IF_DEPTH];
+    /** @} */
+
+    /** The program being compiled. */
+    PKMKCCEVALPROG      pEvalProg;
+    /** Pointer to the content. */
+    const char         *pszContent;
+    /** The amount of input to parse. */
+    size_t              cchContent;
+} KMKCCEVALCOMPILER;
+typedef KMKCCEVALCOMPILER *PKMKCCEVALCOMPILER;
+
+
+static void kmk_cc_eval_init_compiler(PKMKCCEVALCOMPILER pCompiler, PKMKCCEVALPROG pEvalProg, unsigned iLine,
+                                      const char *pszContent, size_t cchContent)
+{
+    pCompiler->ppBlockTail      = &pEvalProg->pBlockTail;
+
+    pCompiler->pRecipe          = NULL;
+    pCompiler->fNoTargetRecipe  = 0;
+    pCompiler->chCmdPrefix      = cmd_prefix;
+
+    pCompiler->cWordsAllocated  = 0;
+    pCompiler->paWords          = NULL;
+
+    pCompiler->cEscEolsAllocated = 0;
+    pCompiler->paEscEols        = NULL;
+    pCompiler->iLine            = iLine;
+
+    pCompiler->cStrCopySegsAllocated = 0;
+    pCompiler->paStrCopySegs    = NULL;
+
+    pCompiler->cIfs             = 0;
+
+    pCompiler->pEvalProg        = pEvalProg;
+    pCompiler->pszContent       = pszContent;
+    pCompiler->cchContent       = cchContent;
+
+    /* Detect EOL style. */
+    pCompiler->cchEolSeq        = kmk_cc_eval_detect_eol_style(&pCompiler->chFirstEol, &pCompiler->chSecondEol,
+                                                               pszContent, cchContent);
+    pCompiler->cchEscEolSeq     = 1 + pCompiler->cchEolSeq;
+}
+
+
+static void kmk_cc_eval_delete_compiler(PKMKCCEVALCOMPILER pCompiler)
+{
+    if (pCompiler->paWords)
+        free(pCompiler->paWords);
+    if (pCompiler->paEscEols)
+        free(pCompiler->paEscEols);
+}
+
+
+/**
+ * Translates a makefile source pointer to a line number and offset.
+ *
+ * @returns Line number (1-based)
+ * @param   pCompiler   The compiler state.
+ * @param   pszWhere    There location to translate.
+ * @param   piColumn    Where to return the line offset (1-based).
+ */
+static unsigned kmk_cc_eval_translate_location(PKMKCCEVALCOMPILER pCompiler, const char *pchWhere, unsigned *piColumn)
+{
+    unsigned iLine   = pCompiler->iLine;
+    size_t   offLine = pCompiler->offLine;
+    size_t   off     = pchWhere - pCompiler->pszContent;
+    unsigned i       = 0;
+    while (   i   < pCompiler->cEscEols
+           && off > pCompiler->paEscEols[i].offEol)
+    {
+        offLine = pCompiler->paEscEols[i].offEol + 1 + pCompiler->cchEolSeq;
+        iLine++;
+        i++;
+    }
+    KMK_CC_ASSERT(off <= pCompiler->cchContent);
+    if (piColumn)
+        *piColumn = (unsigned)(off - offLine) + 1;
+    return iLine;
+}
+
+
+static void KMK_CC_FN_NO_RETURN kmk_cc_eval_fatal(PKMKCCEVALCOMPILER pCompiler, const char *pchWhere, const char *pszMsg, ...)
+{
+    va_list  va;
+    log_working_directory(1);
+
+    /*
+     * If we have a pointer location, use it to figure out the exact line and column.
+     */
+    if (pchWhere)
+    {
+        unsigned iColumn;
+        unsigned iLine = kmk_cc_eval_translate_location(pCompiler, pchWhere, &iColumn);
+
+        if (pCompiler->pEvalProg->pszVarName)
+            fprintf(stderr, "%s:%u:%u: *** fatal parsing error in %s: ",
+                    pCompiler->pEvalProg->pszFilename, iLine, iColumn, pCompiler->pEvalProg->pszVarName);
+        else
+            fprintf(stderr, "%s:%u:%u: *** fatal parsing error: ",
+                    pCompiler->pEvalProg->pszFilename, iLine, iColumn);
+    }
+    else if (pCompiler->pEvalProg->pszVarName)
+        fprintf(stderr, "%s:%u: *** fatal parsing error in %s: ",
+                pCompiler->pEvalProg->pszFilename, pCompiler->iLine, pCompiler->pEvalProg->pszVarName);
+    else
+        fprintf(stderr, "%s:%u: *** fatal parsing error: ",
+                pCompiler->pEvalProg->pszFilename, pCompiler->iLine);
+
+    /*
+     * Print the message and die.
+     */
+    va_start(va, pszMsg);
+    vfprintf(stderr, pszMsg, va);
+    va_end(va);
+    fputs(".  Stop.\n", stderr);
+
+    for (;;)
+        die(2);
+}
+
+
+static KMK_CC_FN_NO_RETURN void
+kmk_cc_eval_fatal_eol(PKMKCCEVALCOMPILER pCompiler, const char *pchEol, unsigned iLine, size_t offLine)
+{
+    pCompiler->iLine   = iLine;
+    pCompiler->offLine = offLine;
+
+    for (;;)
+        kmk_cc_eval_fatal(pCompiler, pchEol, "Missing 2nd EOL character: found %#x instead of %#x\n",
+                          pchEol, pCompiler->chSecondEol);
+}
+
+
+static void kmk_cc_eval_warn(PKMKCCEVALCOMPILER pCompiler, const char *pchWhere, const char *pszMsg, ...)
+{
+    va_list  va;
+
+    log_working_directory(1);
+
+    /*
+     * If we have a pointer location, use it to figure out the exact line and column.
+     */
+    if (pchWhere)
+    {
+        unsigned iColumn;
+        unsigned iLine = kmk_cc_eval_translate_location(pCompiler, pchWhere, &iColumn);
+
+        if (pCompiler->pEvalProg->pszVarName)
+            fprintf(stderr, "%s:%u:%u: *** warning in %s: ",
+                    pCompiler->pEvalProg->pszFilename, iLine, iColumn, pCompiler->pEvalProg->pszVarName);
+        else
+            fprintf(stderr, "%s:%u:%u: *** warning: ",
+                    pCompiler->pEvalProg->pszFilename, iLine, iColumn);
+    }
+    else if (pCompiler->pEvalProg->pszVarName)
+        fprintf(stderr, "%s:%u: *** warning in %s: ",
+                pCompiler->pEvalProg->pszFilename, pCompiler->iLine, pCompiler->pEvalProg->pszVarName);
+    else
+        fprintf(stderr, "%s:%u: *** warning: ",
+                pCompiler->pEvalProg->pszFilename, pCompiler->iLine);
+
+    /*
+     * Print the message.
+     */
+    va_start(va, pszMsg);
+    vfprintf(stderr, pszMsg, va);
+    va_end(va);
+    fputs(".\n", stderr);
+}
+
+
+/**
+ * Compiles a string expansion subprogram.
+ *
+ * @param   pCompiler   The compiler state.
+ * @param   pszExpr     The expression to compile.
+ * @param   cchExpr     The length of the expression.
+ * @param   pSubprog    The subprogram to compile.
+ */
+static void kmk_cc_eval_compile_string_exp_subprog(PKMKCCEVALCOMPILER pCompiler, const char *pszExpr, size_t cchExpr,
+                                                   PKMKCCEXPSUBPROG pSubprog)
+{
+    int rc = kmk_cc_exp_compile_subprog(pCompiler->ppBlockTail, pszExpr, cchExpr, pSubprog);
+    if (rc == 0)
+        return;
+    kmk_cc_eval_fatal(pCompiler, NULL, "String expansion compile error");
+}
+
+
+/**
+ * Initializes a subprogam or plain operand structure.
+ *
+ * @param   pCompiler   The compiler state.
+ * @param   pOperand    The subprogram or plain structure to init.
+ * @param   pszString   The string.
+ * @param   cchString   The length of the string.
+ * @param   fPlain      Whether it's plain or not.  If not, we'll compile it.
+ */
+static void kmk_cc_eval_init_subprogram_or_plain(PKMKCCEVALCOMPILER pCompiler, PKMKCCEXPSUBPROGORPLAIN pOperand,
+                                                 const char *pszString, size_t cchString, int fPlain)
+{
+    pOperand->fPlainIsInVarStrCache  = 0;
+    pOperand->bUser                  = 0;
+    pOperand->bUser2                 = 0;
+    pOperand->fSubprog               = fPlain;
+    if (fPlain)
+    {
+        pOperand->u.Plain.cch = cchString;
+        pOperand->u.Plain.psz = pszString;
+    }
+    else
+        kmk_cc_eval_compile_string_exp_subprog(pCompiler, pszString, cchString, &pOperand->u.Subprog);
+}
+
+/**
+ * Initializes an array of subprogram-or-plain (spp) operands from a word array.
+ *
+ * The words will be duplicated and the caller must therefore call
+ * kmk_cc_block_realign() when done (it's not done here as the caller may
+ * initialize several string operands and we don't want any unnecessary
+ * fragmentation).
+ *
+ * @param   pCompiler   The compiler state.
+ * @param   cWords      The number of words to copy.
+ * @param   paSrc       The source words.
+ * @param   paDst       The destination subprogram-or-plain array.
+ */
+static void kmk_cc_eval_init_spp_array_from_duplicated_words(PKMKCCEVALCOMPILER pCompiler, unsigned cWords,
+                                                             PKMKCCEVALWORD paSrc, PKMKCCEXPSUBPROGORPLAIN paDst)
+{
+    unsigned i;
+    for (i = 0; i < cWords; i++)
+    {
+        const char *pszCopy = kmk_cc_block_strdup(pCompiler->ppBlockTail, paSrc[i].pchWord, paSrc[i].cchWord);
+        paDst[i].fPlainIsInVarStrCache  = 0;
+        paDst[i].bUser                  = 0;
+        paDst[i].bUser2                 = 0;
+        if (paSrc[i].enmToken == kKmkCcEvalToken_WordWithDollar)
+        {
+            paDst[i].fSubprog    = 1;
+            kmk_cc_block_realign(pCompiler->ppBlockTail);
+            kmk_cc_eval_compile_string_exp_subprog(pCompiler, pszCopy, paSrc[i].cchWord, &paDst[i].u.Subprog);
+        }
+        else
+        {
+            paDst[i].fSubprog    = 0;
+            paDst[i].u.Plain.cch = paSrc[i].cchWord;
+            paDst[i].u.Plain.psz = pszCopy;
+        }
+        KMK_CC_EVAL_DPRINTF(("  %s\n", pszCopy));
+    }
+}
+
+
+
+/** @name KMK_CC_WORD_COMP_CONST_XXX - Optimal(/insane) constant work matching.
+ * @{
+ */
+#if (defined(KBUILD_ARCH_X86) || defined(KBUILD_ARCH_AMD64)) /* Unaligned access is reasonably cheap. */ \
+ && !defined(GCC_ADDRESS_SANITIZER)
+# define KMK_CC_WORD_COMP_CONST_2(a_pchLine, a_pszWord) \
+        (   *(uint16_t const *)(a_pchLine)     == *(uint16_t const *)(a_pszWord) )
+# define KMK_CC_WORD_COMP_CONST_3(a_pchLine, a_pszWord) \
+        (   *(uint16_t const *)(a_pchLine)     == *(uint16_t const *)(a_pszWord) \
+         && (a_pchLine)[2]                     == (a_pszWord)[2] )
+# define KMK_CC_WORD_COMP_CONST_4(a_pchLine, a_pszWord) \
+        (   *(uint32_t const *)(a_pchLine)     == *(uint32_t const *)(a_pszWord) )
+# define KMK_CC_WORD_COMP_CONST_5(a_pchLine, a_pszWord) \
+        (   *(uint32_t const *)(a_pchLine)     == *(uint32_t const *)(a_pszWord) \
+         && (a_pchLine)[4]                     == (a_pszWord)[4] )
+# define KMK_CC_WORD_COMP_CONST_6(a_pchLine, a_pszWord) \
+        (   *(uint32_t const *)(a_pchLine)     == *(uint32_t const *)(a_pszWord) \
+         && ((uint16_t const *)(a_pchLine))[2] == ((uint16_t const *)(a_pszWord))[2] )
+# define KMK_CC_WORD_COMP_CONST_7(a_pchLine, a_pszWord) \
+        (   *(uint32_t const *)(a_pchLine)     == *(uint32_t const *)(a_pszWord) \
+         && ((uint16_t const *)(a_pchLine))[2] == ((uint16_t const *)(a_pszWord))[2] \
+         && (a_pchLine)[6]                     == (a_pszWord)[6] )
+# define KMK_CC_WORD_COMP_CONST_8(a_pchLine, a_pszWord) \
+        (   *(uint64_t const *)(a_pchLine)     == *(uint64_t const *)(a_pszWord) )
+# define KMK_CC_WORD_COMP_CONST_10(a_pchLine, a_pszWord) \
+        (   *(uint64_t const *)(a_pchLine)     == *(uint64_t const *)(a_pszWord) \
+         && ((uint16_t const *)(a_pchLine))[4] == ((uint16_t const *)(a_pszWord))[4] )
+# define KMK_CC_WORD_COMP_CONST_16(a_pchLine, a_pszWord) \
+        (   *(uint64_t const *)(a_pchLine)     == *(uint64_t const *)(a_pszWord) \
+         && ((uint64_t const *)(a_pchLine))[1] == ((uint64_t const *)(a_pszWord))[1] )
+#else
+# define KMK_CC_WORD_COMP_CONST_2(a_pchLine, a_pszWord) \
+        (   (a_pchLine)[0] == (a_pszWord)[0] \
+         && (a_pchLine)[1] == (a_pszWord)[1] )
+# define KMK_CC_WORD_COMP_CONST_3(a_pchLine, a_pszWord) \
+        (   (a_pchLine)[0] == (a_pszWord)[0] \
+         && (a_pchLine)[1] == (a_pszWord)[1] \
+         && (a_pchLine)[2] == (a_pszWord)[2] )
+# define KMK_CC_WORD_COMP_CONST_4(a_pchLine, a_pszWord) \
+        (   (a_pchLine)[0] == (a_pszWord)[0] \
+         && (a_pchLine)[1] == (a_pszWord)[1] \
+         && (a_pchLine)[2] == (a_pszWord)[2] \
+         && (a_pchLine)[3] == (a_pszWord)[3] )
+# define KMK_CC_WORD_COMP_CONST_5(a_pchLine, a_pszWord) \
+        (   (a_pchLine)[0] == (a_pszWord)[0] \
+         && (a_pchLine)[1] == (a_pszWord)[1] \
+         && (a_pchLine)[2] == (a_pszWord)[2] \
+         && (a_pchLine)[3] == (a_pszWord)[3] \
+         && (a_pchLine)[4] == (a_pszWord)[4] )
+# define KMK_CC_WORD_COMP_CONST_6(a_pchLine, a_pszWord) \
+        (   (a_pchLine)[0] == (a_pszWord)[0] \
+         && (a_pchLine)[1] == (a_pszWord)[1] \
+         && (a_pchLine)[2] == (a_pszWord)[2] \
+         && (a_pchLine)[3] == (a_pszWord)[3] \
+         && (a_pchLine)[4] == (a_pszWord)[4] \
+         && (a_pchLine)[5] == (a_pszWord)[5] )
+# define KMK_CC_WORD_COMP_CONST_7(a_pchLine, a_pszWord) \
+        (   (a_pchLine)[0] == (a_pszWord)[0] \
+         && (a_pchLine)[1] == (a_pszWord)[1] \
+         && (a_pchLine)[2] == (a_pszWord)[2] \
+         && (a_pchLine)[3] == (a_pszWord)[3] \
+         && (a_pchLine)[4] == (a_pszWord)[4] \
+         && (a_pchLine)[5] == (a_pszWord)[5] \
+         && (a_pchLine)[6] == (a_pszWord)[6] )
+# define KMK_CC_WORD_COMP_CONST_8(a_pchLine, a_pszWord) \
+        (   (a_pchLine)[0] == (a_pszWord)[0] \
+         && (a_pchLine)[1] == (a_pszWord)[1] \
+         && (a_pchLine)[2] == (a_pszWord)[2] \
+         && (a_pchLine)[3] == (a_pszWord)[3] \
+         && (a_pchLine)[4] == (a_pszWord)[4] \
+         && (a_pchLine)[5] == (a_pszWord)[5] \
+         && (a_pchLine)[6] == (a_pszWord)[6] \
+         && (a_pchLine)[7] == (a_pszWord)[7] )
+# define KMK_CC_WORD_COMP_CONST_10(a_pchLine, a_pszWord) \
+        (   (a_pchLine)[0] == (a_pszWord)[0] \
+         && (a_pchLine)[1] == (a_pszWord)[1] \
+         && (a_pchLine)[2] == (a_pszWord)[2] \
+         && (a_pchLine)[3] == (a_pszWord)[3] \
+         && (a_pchLine)[4] == (a_pszWord)[4] \
+         && (a_pchLine)[5] == (a_pszWord)[5] \
+         && (a_pchLine)[6] == (a_pszWord)[6] \
+         && (a_pchLine)[7] == (a_pszWord)[7] \
+         && (a_pchLine)[8] == (a_pszWord)[8] \
+         && (a_pchLine)[9] == (a_pszWord)[9] )
+# define KMK_CC_WORD_COMP_CONST_16(a_pchLine, a_pszWord) \
+        (   (a_pchLine)[0] == (a_pszWord)[0] \
+         && (a_pchLine)[1] == (a_pszWord)[1] \
+         && (a_pchLine)[2] == (a_pszWord)[2] \
+         && (a_pchLine)[3] == (a_pszWord)[3] \
+         && (a_pchLine)[4] == (a_pszWord)[4] \
+         && (a_pchLine)[5] == (a_pszWord)[5] \
+         && (a_pchLine)[6] == (a_pszWord)[6] \
+         && (a_pchLine)[7] == (a_pszWord)[7] \
+         && (a_pchLine)[8] == (a_pszWord)[8] \
+         && (a_pchLine)[9] == (a_pszWord)[9] \
+         && (a_pchLine)[10] == (a_pszWord)[10] \
+         && (a_pchLine)[11] == (a_pszWord)[11] \
+         && (a_pchLine)[12] == (a_pszWord)[12] \
+         && (a_pchLine)[13] == (a_pszWord)[13] \
+         && (a_pchLine)[14] == (a_pszWord)[14] \
+         && (a_pchLine)[15] == (a_pszWord)[15])
+#endif
+
+/** See if the given string match a constant string. */
+#define KMK_CC_STRCMP_CONST(a_pchLeft, a_cchLeft, a_pszConst, a_cchConst) \
+    (   (a_cchLeft) == (a_cchConst) \
+     && KMK_CC_WORD_COMP_CONST_##a_cchConst(a_pchLeft, a_pszConst) )
+
+/** See if a starting of a given length starts with a constant word. */
+#define KMK_CC_EVAL_WORD_COMP_IS_EOL(a_pCompiler, a_pchLine, a_cchLine) \
+    (   (a_cchLine) == 0 \
+     || KMK_CC_EVAL_IS_SPACE((a_pchLine)[0]) \
+     || ((a_pchLine)[0] == '\\' && (a_pchLine)[1] == (a_pCompiler)->chFirstEol) ) \
+
+/** See if a starting of a given length starts with a constant word. */
+#define KMK_CC_EVAL_WORD_COMP_CONST(a_pCompiler, a_pchLine, a_cchLine, a_pszWord, a_cchWord) \
+    (    (a_cchLine) >= (a_cchWord) \
+      && (   (a_cchLine) == (a_cchWord) \
+          || KMK_CC_EVAL_IS_SPACE((a_pchLine)[a_cchWord]) \
+          || ((a_pchLine)[a_cchWord] == '\\' && (a_pchLine)[(a_cchWord) + 1] == (a_pCompiler)->chFirstEol) ) \
+      && KMK_CC_WORD_COMP_CONST_##a_cchWord(a_pchLine, a_pszWord) )
+/** @} */
+
+
+/**
+ * Checks if a_ch is a space after a word.
+ *
+ * Since there is always a terminating zero, the user can safely access a char
+ * beyond @a a_cchLeft.  However, that byte isn't necessarily a zero terminator
+ * character, so we have to check @a a_cchLeft whether we're at the end of the
+ * parsing input string.
+ *
+ * @returns true / false.
+ * @param   a_pCompiler     The compiler instance data.
+ * @param   a_ch            The character to inspect.
+ * @param   a_ch2           The character following it, in case of escaped EOL.
+ * @param   a_cchLeft       The number of chars left to parse (from @a a_ch).
+ */
+#define KMK_CC_EVAL_IS_SPACE_AFTER_WORD(a_pCompiler, a_ch, a_ch2, a_cchLeft) \
+    (   a_cchLeft == 0 \
+     || KMK_CC_EVAL_IS_SPACE(a_ch) \
+     || ((a_ch) == '\\' && (a_ch2) == (a_pCompiler)->chFirstEol) )
+
+
+/**
+ * Common path for space skipping worker functions when escaped EOLs may be
+ * involed.
+ *
+ * @returns Points to the first non-space character or end of input.
+ * @param   pchWord         The current position. There is some kind of char
+ * @param   cchLeft         The current number of chars left to parse in the
+ *                          current line.
+ * @param   pcchLeft        Where to store the updated @a cchLeft value.
+ * @param   pCompiler       The compiler instance data.
+ */
+static const char *kmk_cc_eval_skip_spaces_with_esc_eol(const char *pchWord, size_t cchLeft, size_t *pcchLeft,
+                                                        PKMKCCEVALCOMPILER pCompiler)
+{
+    /*
+     * Skip further spaces. We unrolls 4 loops here.
+     * ASSUMES cchEscEolSeq is either 2 or 3!
+     */
+    KMK_CC_ASSERT(pCompiler->cchEscEolSeq == 2 || pCompiler->cchEscEolSeq == 3);
+    KMK_CC_ASSERT(pCompiler->iEscEol < pCompiler->cEscEols);
+    while (cchLeft >= 4)
+    {
+        /* First char. */
+        char ch = pchWord[0];
+        if (KMK_CC_EVAL_IS_SPACE(ch))
+        { /* maybe likely */ }
+        else if (   ch == '\\'
+                 && pchWord[1] == pCompiler->chFirstEol)
+        {
+            pchWord += pCompiler->cchEscEolSeq;
+            cchLeft -= pCompiler->cchEscEolSeq;
+            pCompiler->iEscEol++;
+            continue;
+        }
+        else
+        {
+            *pcchLeft = cchLeft;
+            return pchWord;
+        }
+
+        /* Second char. */
+        ch = pchWord[1];
+        if (KMK_CC_EVAL_IS_SPACE(ch))
+        { /* maybe likely */ }
+        else if (   ch == '\\'
+                 && pchWord[2] == pCompiler->chFirstEol)
+        {
+            pchWord += 1 + pCompiler->cchEscEolSeq;
+            cchLeft -= 1 + pCompiler->cchEscEolSeq;
+            pCompiler->iEscEol++;
+            continue;
+        }
+        else
+        {
+            *pcchLeft = cchLeft - 1;
+            return pchWord + 1;
+        }
+
+        /* Third char. */
+        ch = pchWord[2];
+        if (KMK_CC_EVAL_IS_SPACE(ch))
+        { /* maybe likely */ }
+        else if (   ch == '\\'
+                 && pchWord[3] == pCompiler->chFirstEol
+                 && cchLeft >= 2 + pCompiler->cchEscEolSeq)
+        {
+            pchWord += 2 + pCompiler->cchEscEolSeq;
+            cchLeft -= 2 + pCompiler->cchEscEolSeq;
+            pCompiler->iEscEol++;
+            continue;
+        }
+        else
+        {
+            *pcchLeft = cchLeft - 2;
+            return pchWord + 2;
+        }
+
+        /* Third char. */
+        ch = pchWord[3];
+        if (KMK_CC_EVAL_IS_SPACE(ch))
+        {
+            pchWord += 4;
+            cchLeft -= 4;
+        }
+        else if (   ch == '\\'
+                 && cchLeft >= 3 + pCompiler->cchEscEolSeq
+                 && pchWord[4] == pCompiler->chFirstEol)
+        {
+            pchWord += 3 + pCompiler->cchEscEolSeq;
+            cchLeft -= 3 + pCompiler->cchEscEolSeq;
+            pCompiler->iEscEol++;
+        }
+        else
+        {
+            *pcchLeft = cchLeft - 3;
+            return pchWord + 3;
+        }
+    }
+
+    /*
+     * Simple loop for the final three chars.
+     */
+    while (cchLeft > 0)
+    {
+        /* First char. */
+        char ch = *pchWord;
+        if (KMK_CC_EVAL_IS_SPACE(ch))
+        {
+            pchWord += 1;
+            cchLeft -= 1;
+        }
+        else if (   ch == '\\'
+                 && cchLeft > pCompiler->cchEolSeq
+                 && pchWord[1] == pCompiler->chFirstEol)
+        {
+            pchWord += pCompiler->cchEscEolSeq;
+            cchLeft -= pCompiler->cchEscEolSeq;
+            pCompiler->iEscEol++;
+        }
+        else
+            break;
+    }
+
+    *pcchLeft = cchLeft;
+    return pchWord;
+}
+
+
+/**
+ * Common path for space skipping worker functions when no escaped EOLs need
+ * considering.
+ *
+ * @returns Points to the first non-space character or end of input.
+ * @param   pchWord         The current position. There is some kind of char
+ * @param   cchLeft         The current number of chars left to parse in the
+ *                          current line.
+ * @param   pcchLeft        Where to store the updated @a cchLeft value.
+ * @param   pCompiler       The compiler instance data.
+ */
+static const char *kmk_cc_eval_skip_spaces_without_esc_eol(const char *pchWord, size_t cchLeft, size_t *pcchLeft,
+                                                           PKMKCCEVALCOMPILER pCompiler)
+{
+    /*
+     * 4x loop unroll.
+     */
+    while (cchLeft >= 4)
+    {
+        if (KMK_CC_EVAL_IS_SPACE(pchWord[0]))
+        {
+            if (KMK_CC_EVAL_IS_SPACE(pchWord[1]))
+            {
+                if (KMK_CC_EVAL_IS_SPACE(pchWord[2]))
+                {
+                    if (KMK_CC_EVAL_IS_SPACE(pchWord[3]))
+                    {
+                        pchWord += 4;
+                        cchLeft -= 4;
+                    }
+                    else
+                    {
+                        *pcchLeft = cchLeft - 3;
+                        return pchWord + 3;
+                    }
+                }
+                else
+                {
+                    *pcchLeft = cchLeft - 2;
+                    return pchWord + 2;
+                }
+            }
+            else
+            {
+                *pcchLeft = cchLeft - 1;
+                return pchWord + 1;
+            }
+        }
+        else
+        {
+            *pcchLeft = cchLeft;
+            return pchWord;
+        }
+    }
+
+    /*
+     * The last 3. Not entirely sure if this yield good code.
+     */
+    switch (cchLeft & 3)
+    {
+        case 3:
+            if (!KMK_CC_EVAL_IS_SPACE(*pchWord))
+                break;
+            pchWord++;
+            cchLeft--;
+        case 2:
+            if (!KMK_CC_EVAL_IS_SPACE(*pchWord))
+                break;
+            pchWord++;
+            cchLeft--;
+        case 1:
+            if (!KMK_CC_EVAL_IS_SPACE(*pchWord))
+                break;
+            pchWord++;
+            cchLeft--;
+        case 0:
+            break;
+    }
+
+    *pcchLeft = cchLeft;
+    return pchWord;
+}
+
+
+/**
+ * Used to skip spaces after a word.
+ *
+ * We ASSUME that the first char is a space or that we've reached the end of the
+ * string (a_cchLeft == 0).
+ *
+ * @param   a_pCompiler     The compiler instance data.
+ * @param   a_pchWord       The current input position, this will be moved to
+ *                          the start of the next word or end of the input.
+ * @param   a_cchLeft       The number of chars left to parse.  This will be
+ *                          updated.
+ */
+#define KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(a_pCompiler, a_pchWord, a_cchLeft) \
+    do { \
+        /* Skip the first char which is known to be a space, end of line or end of input. */ \
+        if ((a_cchLeft) > 0) \
+        { \
+            char const chSkipBlanksFirst = *(a_pchWord); \
+            KMK_CC_ASSERT(KMK_CC_EVAL_IS_SPACE_AFTER_WORD(a_pCompiler, chSkipBlanksFirst, (a_pchWord)[1], a_cchLeft)); \
+            if (chSkipBlanksFirst != '\\') \
+            { \
+                (a_pchWord) += 1; \
+                (a_cchLeft) -= 1; \
+                \
+                /* Another space or escaped EOL? Then there are probably more then, so call worker function. */ \
+                if ((a_cchLeft) > 0) \
+                { \
+                    char const chSkipBlanksSecond = *(a_pchWord); \
+                    if (KMK_CC_EVAL_IS_SPACE_OR_BACKSLASH(chSkipBlanksSecond)) \
+                        (a_pchWord) = kmk_cc_eval_skip_spaces_after_word_slow(a_pchWord, &(a_cchLeft), \
+                                                                              chSkipBlanksSecond, a_pCompiler); \
+                } \
+            } \
+            else /* escape sequences can be complicated. */ \
+                (a_pchWord) = kmk_cc_eval_skip_spaces_after_word_slow(a_pchWord, &(a_cchLeft), \
+                                                                      chSkipBlanksFirst, a_pCompiler); \
+        } \
+    } while (0)
+
+/**
+ * The slow path of KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD.
+ *
+ * This is called to handles escaped EOL sequences, as these can involve
+ * multiple backslashes and therefore doesn't led themselves well to inlined
+ * code.
+ *
+ * The other case this is used for is to handle more than once space, since it's
+ * likely that when there are two there might be more.  No point in inlining
+ * that, better do some loop unrolling instead.
+ *
+ * @returns Points to the first non-space character or end of input.
+ * @param   pchWord             The current position. There is some kind of char
+ * @param   pcchLeft            Pointer to the cchLeft variable, this is both
+ *                              input and output.
+ * @param   ch                  The current character.
+ * @param   pCompiler           The compiler instance data.
+ */
+static const char *kmk_cc_eval_skip_spaces_after_word_slow(const char *pchWord, size_t *pcchLeft, char ch,
+                                                           PKMKCCEVALCOMPILER pCompiler)
+{
+    size_t cchLeft = *pcchLeft;
+
+    /*
+     * It's all very simple when we don't have to consider escaped EOLs.
+     */
+    if (pCompiler->iEscEol >= pCompiler->cEscEols)
+    {
+        if (ch != '\\')
+        {
+            pchWord += 1;
+            cchLeft -= 1;
+        }
+        else
+            return pchWord;
+        return kmk_cc_eval_skip_spaces_without_esc_eol(pchWord, cchLeft, pcchLeft, pCompiler);
+    }
+
+    /*
+     * Skip the pending space or EOL found by the caller.  We need to
+     * confirm the EOL.
+     *
+     * Note! We only need to care about simple backslash+EOL sequences here
+     *       since we're either at the end of a validated word, or we've already
+     *       skipped one space.  In the former case, someone else has already
+     *       validated the escape esequence, in the latter case multiple
+     *       backslashes would indicate a new word that that we should return.
+     */
+    if (ch != '\\')
+    {
+        pchWord += 1;
+        cchLeft -= 1;
+    }
+    else if (   cchLeft >= pCompiler->cchEscEolSeq
+             && pchWord[1] == pCompiler->chFirstEol)
+    {
+        KMK_CC_ASSERT(pCompiler->cchEolSeq == 1 || pchWord[2] == pCompiler->chSecondEol);
+        pchWord += pCompiler->cchEscEolSeq;
+        cchLeft -= pCompiler->cchEscEolSeq;
+        pCompiler->iEscEol++;
+
+        if (pCompiler->iEscEol < pCompiler->cEscEols)
+        { /* likely */ }
+        else return kmk_cc_eval_skip_spaces_without_esc_eol(pchWord, cchLeft, pcchLeft, pCompiler);
+    }
+    else
+        return pchWord;
+    return kmk_cc_eval_skip_spaces_with_esc_eol(pchWord, cchLeft, pcchLeft, pCompiler);
+}
+
+
+/**
+ * Skip zero or more spaces.
+ *
+ * This macro deals with a single space, if there are more or we're hittin some
+ * possible escaped EOL sequence, work is deferred to a worker function.
+ *
+ * @param   a_pCompiler The compiler state.
+ * @param   a_pchWord   The current input position. Advanced past spaces.
+ * @param   a_cchLeft   The amount of input left to parse. Will be updated.
+ */
+#define KMK_CC_EVAL_SKIP_SPACES(a_pCompiler, a_pchWord, a_cchLeft) \
+    do { \
+        if ((a_cchLeft) > 0) \
+        { \
+            char chSkipSpaces = *(a_pchWord); \
+            if (KMK_CC_EVAL_IS_SPACE_OR_BACKSLASH(chSkipSpaces)) \
+            { \
+                if (chSkipSpaces != '\\') \
+                { \
+                    (a_pchWord) += 1; \
+                    (a_cchLeft) -= 1; \
+                    chSkipSpaces = *(a_pchWord); \
+                    if (KMK_CC_EVAL_IS_SPACE_OR_BACKSLASH(chSkipSpaces)) \
+                        (a_pchWord) = kmk_cc_eval_skip_spaces_slow(a_pchWord, &(a_cchLeft), chSkipSpaces, a_pCompiler); \
+                } \
+                else \
+                    (a_pchWord) = kmk_cc_eval_skip_spaces_slow(a_pchWord, &(a_cchLeft), chSkipSpaces, a_pCompiler); \
+            } \
+        } \
+    } while (0)
+
+
+/**
+ * Worker for KMK_CC_EVAL_SKIP_SPACES.
+ *
+ * @returns Points to the first non-space character or end of input.
+ * @param   pchWord             The current position. There is some kind of char
+ * @param   pcchLeft            Pointer to the cchLeft variable, this is both
+ *                              input and output.
+ * @param   ch                  The current character.
+ * @param   pCompiler           The compiler instance data.
+ */
+static const char *kmk_cc_eval_skip_spaces_slow(const char *pchWord, size_t *pcchLeft, char ch, PKMKCCEVALCOMPILER pCompiler)
+{
+    size_t cchLeft = *pcchLeft;
+#ifdef KMK_CC_STRICT
+    size_t offWordCcStrict = pchWord - pCompiler->pszContent;
+#endif
+    KMK_CC_ASSERT(cchLeft > 0);
+    KMK_CC_ASSERT(cchLeft <= pCompiler->cchLine);
+    KMK_CC_ASSERT(*pchWord == ch);
+    KMK_CC_ASSERT(KMK_CC_EVAL_IS_SPACE_OR_BACKSLASH(ch));
+    KMK_CC_ASSERT(offWordCcStrict >= pCompiler->offLine);
+    KMK_CC_ASSERT(offWordCcStrict < pCompiler->offLine + pCompiler->cchLine);
+    KMK_CC_ASSERT(   pCompiler->iEscEol >= pCompiler->cEscEols
+                  || offWordCcStrict <= pCompiler->paEscEols[pCompiler->iEscEol].offEsc);
+    KMK_CC_ASSERT(   pCompiler->iEscEol >= pCompiler->cEscEols
+                  || pCompiler->iEscEol == 0
+                  || offWordCcStrict >= pCompiler->paEscEols[pCompiler->iEscEol - 1].offEol + pCompiler->cchEolSeq);
+
+    /*
+     * If we don't need to consider escaped EOLs, things are much much simpler.
+     */
+    if (pCompiler->iEscEol >= pCompiler->cEscEols)
+    {
+        if (ch != '\\')
+        {
+            pchWord++;
+            cchLeft--;
+        }
+        else
+            return pchWord;
+        return kmk_cc_eval_skip_spaces_without_esc_eol(pchWord, cchLeft, pcchLeft, pCompiler);
+    }
+
+    /*
+     * Possible escaped EOL complications.
+     */
+    if (ch != '\\')
+    {
+        pchWord++;
+        cchLeft--;
+    }
+    else
+    {
+        size_t          cchSkip;
+        size_t          offWord;
+        unsigned        iEscEol = pCompiler->iEscEol;
+        if (iEscEol >= pCompiler->cEscEols)
+            return pchWord;
+
+        offWord = pchWord - pCompiler->pszContent;
+        if (offWord < pCompiler->paEscEols[iEscEol].offEsc)
+            return pchWord;
+        KMK_CC_ASSERT(offWord == pCompiler->paEscEols[iEscEol].offEsc);
+
+        cchSkip  = pCompiler->paEscEols[iEscEol].offEol + pCompiler->cchEolSeq - offWord;
+        pchWord += cchSkip;
+        cchLeft -= cchSkip;
+        pCompiler->iEscEol = ++iEscEol;
+
+        if (iEscEol < pCompiler->cEscEols)
+        { /* likely */ }
+        else return kmk_cc_eval_skip_spaces_without_esc_eol(pchWord, cchLeft, pcchLeft, pCompiler);
+    }
+    return kmk_cc_eval_skip_spaces_with_esc_eol(pchWord, cchLeft, pcchLeft, pCompiler);
+}
+
+
+#if 0 /* unused - probably forever. */
+/**
+ * Skips to the end of a variable name.
+ *
+ * This may advance pCompiler->iEscEol.
+ *
+ * @returns Pointer to the first char after the variable name.
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     The current position. Must be at the start of the
+ *                      variable name.
+ * @param   cchLeft     The number of chars left to parse in the current line.
+ * @param   pcchLeft    The to store the updated count of characters left to
+ *                      parse.
+ * @param   pfPlain     Where to store the plain variable name indicator.
+ *                      Returns 0 if plain, and 1 if there are variable
+ *                      references in it.
+ */
+static const char *kmk_cc_eval_skip_var_name(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft,
+                                             size_t *pcchLeft, int *pfPlain)
+{
+    const char * const  pszContent = pCompiler->pszContent;
+    size_t              off        = pchWord - pszContent;
+    size_t const        offLineEnd = off + cchLeft;
+    int                 fPlain     = 1;
+    unsigned            iEscEol    = pCompiler->iEscEol;
+
+    /* Check our expectations. */
+    KMK_CC_ASSERT(cchLeft);
+    KMK_CC_ASSERT(!KMK_CC_EVAL_IS_SPACE(*pchWord));
+    KMK_CC_ASSERT(iEscEol <= pCompiler->cEscEols);
+    KMK_CC_ASSERT(   iEscEol >= pCompiler->cEscEols
+                  || off < pCompiler->paEscEols[iEscEol].offEol);
+    KMK_CC_ASSERT(off >= (iEscEol == 0 ? pCompiler->offLine : pCompiler->paEscEols[iEscEol - 1].offEol + pCompiler->cchEolSeq));
+
+    /*
+     * The outer loop parses plain text.  Variable expansion ($) is handled
+     * by the inner loop.
+     */
+    while (off < offLineEnd)
+    {
+        char ch = pszContent[off];
+        if (!KMK_CC_EVAL_IS_SPACE_DOLLAR_OR_SLASH(ch))
+            off++;
+        else if (KMK_CC_EVAL_IS_SPACE(ch))
+            break;
+        else if (ch == '$')
+        {
+            off++;
+            if (off < offLineEnd)
+            {
+                char const chOpen = pszContent[off];
+                if (chOpen == '(' || chOpen == '{')
+                {
+                    /*
+                     * Got a $(VAR) or ${VAR} to deal with here.  This may
+                     * include nested variable references and span multiple
+                     * lines (at least for function calls).
+                     *
+                     * We scan forward till we've found the corresponding
+                     * closing parenthesis, considering any open parentheses
+                     * of the same kind as worth counting, even if there are
+                     * no dollar preceeding them, just like GNU make does.
+                     */
+                    size_t const offStart = off - 1;
+                    char const   chClose  = chOpen == '(' ? ')' : '}';
+                    unsigned     cOpen    = 1;
+                    off++;
+                    for (;;)
+                    {
+                        if (off < offLineEnd)
+                        {
+                            ch = pszContent[off];
+                            if (!(KMK_CC_EVAL_IS_PAREN_OR_SLASH(ch)))
+                                off++;
+                            else
+                            {
+                                off++;
+                                if (ch == chClose)
+                                {
+                                    if (--cOpen == 0)
+                                        break;
+                                }
+                                else if (ch == chOpen)
+                                    cOpen++;
+                                else if (   ch == '\\'
+                                         && iEscEol < pCompiler->cEscEols
+                                         && off == pCompiler->paEscEols[iEscEol].offEsc)
+                                {
+                                    off = pCompiler->paEscEols[iEscEol].offEol + pCompiler->cchEolSeq;
+                                    pCompiler->iEscEol = ++iEscEol;
+                                }
+                            }
+                        }
+                        else if (cOpen == 1)
+                            kmk_cc_eval_fatal(pCompiler, &pszContent[offStart],
+                                              "Variable reference is missing '%c'", chClose);
+                        else
+                            kmk_cc_eval_fatal(pCompiler, &pszContent[offStart],
+                                              "%u variable references are missing '%c'", cOpen, chClose);
+                    }
+                }
+                /* Single char variable name. */
+                else if (!KMK_CC_EVAL_IS_SPACE(chOpen))
+                {  /* likely */ }
+                else
+                    kmk_cc_eval_fatal(pCompiler, &pszContent[off], "Expected variable name after '$', not end of line");
+            }
+            else
+                kmk_cc_eval_fatal(pCompiler, &pszContent[off], "Expected variable name after '$', not end of line");
+            fPlain = 0;
+        }
+        /* Deal with potential escaped EOL. */
+        else if (   ch != '\\'
+                 || iEscEol >= pCompiler->cEscEols
+                 || off != pCompiler->paEscEols[iEscEol].offEsc )
+            off++;
+        else
+            break;
+    }
+
+    *pcchLeft = offLineEnd - off;
+    *pfPlain  = fPlain;
+    return &pszContent[off];
+}
+#endif /* unused */
+
+
+#if 0  /* unused atm */
+/**
+ * Prepares for copying a command line.
+ *
+ * The current version of this code will not modify any of the paEscEols
+ * entries, unlike our kmk_cc_eval_prep_normal_line sibling function.
+ *
+ * @returns The number of chars that will be copied by
+ *          kmk_cc_eval_copy_prepped_command_line().
+ * @param   pCompiler   The compiler instance data.
+ * @param   pchLeft     Pointer to the first char to copy from the current line.
+ *                      This does not have to the start of a word.
+ * @param   cchLeft     The number of chars left on the current line starting at
+ *                      @a pchLeft.
+ */
+static size_t kmk_cc_eval_prep_command_line(PKMKCCEVALCOMPILER pCompiler, const char * const pchLeft, size_t cchLeft)
+{
+    size_t          cchRet;
+    unsigned        iEscEol  = pCompiler->iEscEol;
+    unsigned const  cEscEols = pCompiler->cEscEols;
+
+    KMK_CC_ASSERT(cchLeft > 0);
+    KMK_CC_ASSERT(iEscEol <= cEscEols);
+
+    if (iEscEol >= cEscEols)
+    {
+        /*
+         * No escaped EOLs left, dead simple.
+         */
+        cchRet = cchLeft;
+    }
+    else
+    {
+        /*
+         * Compared to the normal prepping of a line, this is actually
+         * really simple.  We need to account for two kind of conversions:
+         *      - One leading tab is skipped after escaped EOL.
+         *      - Convert EOL to LF.
+         */
+        const char * const  pszContent = pCompiler->pszContent;
+        size_t       const  cchEolSeq  = pCompiler->cchEolSeq;
+
+#ifdef KMK_CC_STRICT
+        size_t const offLeft   = pchLeft - pszContent;
+        KMK_CC_ASSERT(offLeft + cchLeft <= pCompiler->offLine + pCompiler->cchLine);
+        KMK_CC_ASSERT(offLeft + cchLeft <= pCompiler->cchContent);
+        KMK_CC_ASSERT(offLeft <  pCompiler->paEscEols[iEscEol].offEsc);
+        KMK_CC_ASSERT(offLeft >= (iEscEol ? pCompiler->paEscEols[cEscEols - 1].offEol + pCompiler->cchEolSeq : pCompiler->offLine));
+#endif
+
+        cchRet = cchLeft;
+        if (cchEolSeq > 1)
+            cchRet -= (cchEolSeq - 1) * cEscEols;
+        do
+        {
+            if (pszContent[pCompiler->paEscEols[cchEolSeq].offEol])
+                cchRet--;
+            iEscEol++;
+        } while (iEscEol < cEscEols);
+    }
+    return cchRet;
+}
+
+
+/**
+ * Copies a command line to the buffer @a pszDst points to.
+ *
+ * Must only be used immediately after kmk_cc_eval_prep_command_line().
+ *
+ * @returns
+ * @param   pCompiler   The compiler instance data.
+ * @param   pchLeft     Pointer to the first char to copy from the current line.
+ *                      This does not have to the start of a word.
+ * @param   cchPrepped  The return value of kmk_cc_eval_prep_command_line().
+ * @param   pszDst      The destination buffer, must be at least @a cchPrepped
+ *                      plus one (terminator) char big.
+ */
+static void kmk_cc_eval_copy_prepped_command_line(PKMKCCEVALCOMPILER pCompiler, const char *pchLeft,
+                                                  size_t cchPrepped, char *pszDst)
+{
+    unsigned        iEscEol  = pCompiler->iEscEol;
+    unsigned const  cEscEols = pCompiler->cEscEols;
+    if (iEscEol >= cEscEols)
+    {
+        /* Single line. */
+        memcpy(pszDst, pchLeft, cchPrepped);
+        pszDst[cchPrepped] = '\0';
+    }
+    else
+    {
+        /* Multiple lines with normalized EOL and maybe one stripped leading TAB. */
+        char * const        pszDstStart = pszDst;
+        const char * const  pszContent  = pCompiler->pszContent;
+        size_t const        cchEolSeq   = pCompiler->cchEolSeq;
+        size_t              offLeft     = pchLeft - pCompiler->pszContent;
+        size_t              cchCopy;
+
+        do
+        {
+            size_t offEol = pCompiler->paEscEols[iEscEol].offEsc;
+            cchCopy = offEol - offLeft;
+            KMK_CC_ASSERT(offEol >= offLeft);
+
+            memcpy(pszDst, &pszContent[offLeft], cchCopy);
+            pszDst += cchCopy;
+            *pszDst += '\n';
+
+            offLeft = offEol + cchEolSeq;
+            if (pszContent[offLeft] == '\t')
+                offLeft++;
+        } while (iEscEol < cEscEols);
+
+        cchCopy = cchPrepped - (pszDst - pszDstStart);
+        KMK_CC_ASSERT(cchCopy <= cchPrepped);
+        memcpy(pszDst, &pszContent[offLeft], cchCopy);
+        pszDst += cchCopy;
+
+        *pszDst = '\0';
+        KMK_CC_ASSERT(pszDst == &pszDstStart[cchPrepped]);
+    }
+}
+#endif /* unused atm */
+
+
+static size_t kmk_cc_eval_parse_var_exp(PKMKCCEVALCOMPILER pCompiler, const char *pch, size_t cchLeft, size_t off)
+{
+    off++;
+    if (off < cchLeft)
+    {
+        char const chOpen = pch[++off];
+        if (chOpen == '(' || chOpen == '{')
+        {
+            /*
+             * Got a $(VAR) or ${VAR} to deal with here.  This may include nested
+             * variable references and span multiple lines (at least for function
+             * calls).
+             *
+             * We scan forward till we've found the corresponding closing
+             * parenthesis, considering any open parentheses of the same kind as
+             * worth counting, even if there are no dollar preceeding them, just
+             * like GNU make does.
+             */
+            size_t const offStart = off - 1;
+            char const   chClose  = chOpen == '(' ? ')' : '}';
+            unsigned     cOpen    = 1;
+            off++;
+            for (;;)
+            {
+                if (off < cchLeft)
+                {
+                    char ch = pch[off];
+                    if (!(KMK_CC_EVAL_IS_PAREN_OR_SLASH(ch)))
+                        off++;
+                    else
+                    {
+                        off++;
+                        if (ch == chClose)
+                        {
+                            if (--cOpen == 0)
+                                break;
+                        }
+                        else if (ch == chOpen)
+                            cOpen++;
+                        else if (   ch == '\\'
+                                 && pCompiler->iEscEol < pCompiler->cEscEols
+                                 &&    (size_t)(&pch[off] - pCompiler->pszContent)
+                                    == pCompiler->paEscEols[pCompiler->iEscEol].offEsc)
+                        {
+                            off += pCompiler->paEscEols[pCompiler->iEscEol].offEol
+                                 - pCompiler->paEscEols[pCompiler->iEscEol].offEsc
+                                 + pCompiler->cchEolSeq;
+                            pCompiler->iEscEol++;
+                        }
+                    }
+                }
+                else if (cOpen == 1)
+                    kmk_cc_eval_fatal(pCompiler, &pch[offStart], "Variable reference is missing '%c'", chClose);
+                else
+                    kmk_cc_eval_fatal(pCompiler, &pch[offStart],
+                                      "%u variable references are missing '%c'", cOpen, chClose);
+            }
+        }
+        /* Single char variable name. */
+        else if (!KMK_CC_EVAL_IS_SPACE(chOpen))
+        {  /* likely */ }
+        else
+            kmk_cc_eval_fatal(pCompiler, &pch[off], "Expected variable name after '$', not space ");
+    }
+    else
+        kmk_cc_eval_fatal(pCompiler, &pch[off], "Expected variable name after '$', end of line");
+    return off;
+}
+
+/**
+ * Helper for ensuring that we've got sufficient number of words allocated.
+ */
+#define KMK_CC_EVAL_ENSURE_WORDS(a_pCompiler, a_cRequiredWords) \
+    do { \
+        if ((a_cRequiredWords) < (a_pCompiler)->cWordsAllocated) \
+        { /* likely */ } \
+        else \
+        { \
+            unsigned cEnsureWords = ((a_cRequiredWords) + 3 /*15*/) & ~(unsigned)3/*15*/; \
+            KMK_CC_ASSERT((a_cRequiredWords) < 0x8000); \
+            (a_pCompiler)->paWords = (PKMKCCEVALWORD)xrealloc((a_pCompiler)->paWords, \
+                                                              cEnsureWords * sizeof((a_pCompiler)->paWords)[0]); \
+        } \
+    } while (0)
+
+
+/**
+ * Word parser helper function for dealing with dollars, simple variant that
+ * doesn't need to take multiple lines into account.
+ *
+ * @returns New word length placing us after the
+ * @param   pCompiler   The compiler state.
+ * @param   cchWord     Offset of the dollar into pchWord.
+ * @param   pchWord     The word we're currently parsing.
+ * @param   cchLeft     How much we've got left to parse.
+ */
+K_INLINE size_t kmk_cc_eval_parse_along_dollar_simple(PKMKCCEVALCOMPILER pCompiler, size_t cchWord,
+                                                      const char *pchWord, size_t cchLeft)
+{
+    const size_t cchStart = cchWord;
+    cchWord++;
+    if (cchWord < cchLeft)
+    {
+        /*
+         * Got a $(VAR) or ${VAR} to deal with here.  This may include nested variable
+         * references and span multiple lines (at least for function calls).
+         *
+         * We scan forward till we've found the corresponding closing parenthesis,
+         * considering any open parentheses of the same kind as worth counting, even
+         * if there are no dollar preceeding them, just like GNU make does.
+         *
+         * We leave the other parenthesis type to the expansion compiler to deal with.
+         */
+        unsigned   cOpens = 1;
+        char const chOpen = pchWord[cchWord++];
+        if (chOpen == '(')
+        {
+            for (;;)
+            {
+                if (cchWord < cchLeft)
+                {
+                    char const ch = pchWord[cchWord++];
+                    if (!KMK_CC_EVAL_IS_PAREN_OR_SLASH(ch))
+                    { /* likely */ }
+                    else if (ch == ')')
+                    {
+                        if (--cOpens == 0)
+                            return cchWord;
+                    }
+                    else if (ch == '(')
+                       cOpens++;
+                }
+                else
+                    break;
+            }
+        }
+        else if (chOpen == '{')
+        {
+            for (;;)
+            {
+                if (cchWord < cchLeft)
+                {
+                    char const ch = pchWord[cchWord++];
+                    if (!KMK_CC_EVAL_IS_PAREN_OR_SLASH(ch))
+                    { /* likely */ }
+                    else if (ch == '}')
+                    {
+                        if (--cOpens == 0)
+                            return cchWord;
+                    }
+                    else if (ch == '{')
+                       cOpens++;
+                }
+                else
+                    break;
+            }
+        }
+        else
+            return cchWord;
+
+        /* Unterminated. */
+        if (cOpens == 1)
+            kmk_cc_eval_fatal(pCompiler, &pchWord[cchStart],
+                              "Variable reference is missing '%c'", chOpen == '(' ? ')' : '}');
+        else
+            kmk_cc_eval_fatal(pCompiler, &pchWord[cchStart],
+                              "%u variable references are missing '%c'", cOpens, chOpen == '(' ? ')' : '}');
+    }
+    else
+        kmk_cc_eval_warn(pCompiler, &pchWord[cchWord - 1], "found '$' at end of line");
+    return cchWord;
+}
+
+
+/**
+ * Word parser helper function for dealing with dollars, complicated variant
+ * that takes escaped EOLs into account.
+ *
+ * @returns New word length placing us after the
+ * @param   pCompiler   The compiler state.
+ * @param   cchWord     Offset of the dollar into pchWord.
+ * @param   pchWord     The word we're currently parsing.
+ * @param   cchLeft     How much we've got left to parse.
+ */
+static size_t kmk_cc_eval_parse_along_dollar_esc_eol(PKMKCCEVALCOMPILER pCompiler, size_t cchWord,
+                                                     const char *pchWord, size_t cchLeft)
+{
+    const size_t cchStart = cchWord;
+    cchWord++;
+    if (cchWord < cchLeft)
+    {
+        /*
+         * Got a $(VAR) or ${VAR} to deal with here.  This may include nested variable
+         * references and span multiple lines (at least for function calls).
+         *
+         * We scan forward till we've found the corresponding closing parenthesis,
+         * considering any open parentheses of the same kind as worth counting, even
+         * if there are no dollar preceeding them, just like GNU make does.
+         *
+         * We leave the other parenthesis type to the expansion compiler to deal with.
+         */
+        unsigned   cOpens = 1;
+        char const chOpen = pchWord[cchWord++];
+        if (chOpen == '(')
+        {
+            for (;;)
+            {
+                if (cchWord < cchLeft)
+                {
+                    char const ch = pchWord[cchWord++];
+                    if (!KMK_CC_EVAL_IS_PAREN_OR_SLASH(ch))
+                    { /* likely */ }
+                    else if (ch == ')')
+                    {
+                        if (--cOpens == 0)
+                            return cchWord;
+                    }
+                    else if (ch == '(')
+                       cOpens++;
+                    else if (ch == '\\')
+                    {
+                        unsigned const iEscEol = pCompiler->iEscEol;
+                        if (   iEscEol < pCompiler->cEscEols
+                            && (size_t)(&pchWord[cchWord] - pCompiler->pszContent) == pCompiler->paEscEols[iEscEol].offEsc)
+                        {
+                            cchWord += pCompiler->paEscEols[iEscEol].offEol
+                                     - pCompiler->paEscEols[iEscEol].offEsc
+                                     + pCompiler->cchEolSeq;
+                            pCompiler->iEscEol = iEscEol + 1;
+                        }
+                    }
+                }
+                else
+                    break;
+            }
+        }
+        else if (chOpen == '{')
+        {
+            for (;;)
+            {
+                if (cchWord < cchLeft)
+                {
+                    char const ch = pchWord[cchWord++];
+                    if (!KMK_CC_EVAL_IS_PAREN_OR_SLASH(ch))
+                    { /* likely */ }
+                    else if (ch == '}')
+                    {
+                        if (--cOpens == 0)
+                            return cchWord;
+                    }
+                    else if (ch == '{')
+                       cOpens++;
+                    else if (ch == '\\')
+                    {
+                        unsigned const iEscEol = pCompiler->iEscEol;
+                        if (   iEscEol < pCompiler->cEscEols
+                            && (size_t)(&pchWord[cchWord] - pCompiler->pszContent) == pCompiler->paEscEols[iEscEol].offEsc)
+                        {
+                            cchWord += pCompiler->paEscEols[iEscEol].offEol
+                                     - pCompiler->paEscEols[iEscEol].offEsc
+                                     + pCompiler->cchEolSeq;
+                            pCompiler->iEscEol = iEscEol + 1;
+                        }
+                    }
+                }
+                else
+                    break;
+            }
+        }
+        else
+            return cchWord;
+
+        /* Unterminated. */
+        if (cOpens == 1)
+            kmk_cc_eval_fatal(pCompiler, &pchWord[cchStart],
+                              "Variable reference is missing '%c'", chOpen == '(' ? ')' : '}');
+        else
+            kmk_cc_eval_fatal(pCompiler, &pchWord[cchStart],
+                              "%u variable references are missing '%c'", cOpens, chOpen == '(' ? ')' : '}');
+    }
+    else
+        kmk_cc_eval_warn(pCompiler, &pchWord[cchWord - 1], "found '$' at end of line");
+    return cchWord;
+}
+
+
+/**
+ * Parses the remainder of the line into simple words.
+ *
+ * The resulting words are classified as either kKmkCcEvalToken_WordPlain,
+ * kKmkCcEvalToken_WordWithDollar, or kKmkCcEvalToken_WordWithDollarAndEscEol.
+ *
+ * @returns Number of words.
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     Where to start, we expect this to be at a word.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ *                      This is expected to be non-zero.
+ */
+static unsigned kmk_cc_eval_parse_words(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft)
+{
+    unsigned iEscEol  = pCompiler->iEscEol;
+    unsigned cEscEols = pCompiler->cEscEols;
+    unsigned cWords   = 0;
+
+    /* Precoditions. */
+    KMK_CC_ASSERT(cchLeft > 0);
+    KMK_CC_ASSERT(!KMK_CC_EVAL_IS_SPACE(*pchWord));
+
+    /*
+     * If we don't have to deal with escaped EOLs, the find-end-of word search
+     * becomes a little bit simpler.  Since this function will be used a lot
+     * for simple lines with single words, this could maybe save a nano second
+     * or two.
+     */
+    if (iEscEol >= cEscEols)
+    {
+        do
+        {
+            size_t          cchSkipAfter = 0;
+            size_t          cchWord      = 0;
+            KMKCCEVALTOKEN  enmToken     = kKmkCcEvalToken_WordPlain;
+
+            /* Find the end of the current word. */
+            while (cchWord < cchLeft)
+            {
+                char ch = pchWord[cchWord];
+                if (!KMK_CC_EVAL_IS_SPACE_OR_DOLLAR(ch))
+                    cchWord++;
+                else if (ch == '$')
+                {
+#ifdef XXXX
+                    cchWord = kmk_cc_eval_parse_var_exp(pCompiler, pchWord, cchLeft, cchWord);
+                    enmToken = kKmkCcEvalToken_WordWithDollar;
+#else
+                    enmToken = kKmkCcEvalToken_WordWithDollar;
+                    cchWord = kmk_cc_eval_parse_along_dollar_simple(pCompiler, cchWord, pchWord, cchLeft);
+#endif
+                }
+                else
+                    break;
+            }
+
+            /* Add the word. */
+            KMK_CC_EVAL_ENSURE_WORDS(pCompiler, cWords + 1);
+            pCompiler->paWords[cWords].pchWord            = pchWord;
+            pCompiler->paWords[cWords].cchWord            = cchWord;
+            pCompiler->paWords[cWords].enmToken           = enmToken;
+            cWords++;
+
+            /* Skip the work and any trailing blanks. */
+            cchWord += cchSkipAfter;
+            pchWord += cchWord;
+            cchLeft -= cchWord;
+            KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+        } while (cchLeft > 0);
+    }
+    /*
+     * Have to deal with escaped EOLs.
+     */
+    else
+    {
+        const char *pszContent = pCompiler->pszContent;
+        do
+        {
+            size_t          cchSkipAfter = 0;
+            size_t          cchWord      = 0;
+            KMKCCEVALTOKEN  enmToken     = kKmkCcEvalToken_WordPlain;
+
+            /* Find the end of the current word. */
+            while (cchWord < cchLeft)
+            {
+                char ch = pchWord[cchWord];
+                if (!KMK_CC_EVAL_IS_SPACE_DOLLAR_OR_SLASH(ch))
+                    cchWord++;
+                else if (ch == '$')
+#ifdef XXXX
+                {
+                    const unsigned iEscEolBefore = pCompiler->iEscEol;
+                    cchWord = kmk_cc_eval_parse_var_exp(pCompiler, pchWord, cchLeft, cchWord);
+                    enmToken = pCompiler->iEscEol == iEscEolBefore
+                             ? kKmkCcEvalToken_WordWithDollar : kKmkCcEvalToken_WordWithDollarAndEscEol;
+                }
+#else
+                {
+                    enmToken = kKmkCcEvalToken_WordWithDollar;
+                    cchWord = kmk_cc_eval_parse_along_dollar_esc_eol(pCompiler, cchWord, pchWord, cchLeft);
+                }
+#endif
+                else if (ch != '\\')
+                    break;
+                else if ((size_t)(&pchWord[cchWord] - pszContent) != pCompiler->paEscEols[iEscEol].offEsc)
+                    cchWord++;
+                else
+                {
+                    cchSkipAfter = pCompiler->paEscEols[iEscEol].offEol - pCompiler->paEscEols[iEscEol].offEsc
+                                 + pCompiler->cchEolSeq;
+                    iEscEol++;
+                    break;
+                }
+            }
+
+            /* Add the word. */
+            KMK_CC_EVAL_ENSURE_WORDS(pCompiler, cWords + 1);
+            pCompiler->paWords[cWords].pchWord  = pchWord;
+            pCompiler->paWords[cWords].cchWord  = cchWord;
+            pCompiler->paWords[cWords].enmToken = enmToken;
+            cWords++;
+
+            /* Skip the work and any trailing blanks. */
+            cchWord += cchSkipAfter;
+            pchWord += cchWord;
+            cchLeft -= cchWord;
+            KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+        } while (cchLeft > 0);
+    }
+    pCompiler->cWords = cWords;
+    return cWords;
+}
+
+
+/**
+ * Parses the remainder of the line into target words.
+ *
+ * The resulting words are classified as either kKmkCcEvalToken_WordPlain or
+ * kKmkCcEvalToken_WordWithDollar.
+ *
+ * @returns Number of words.
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     Where to start, we expect this to be at a word.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ *                      This is expected to be non-zero.
+ */
+static unsigned kmk_cc_eval_parse_recipe_words(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft)
+{
+    unsigned iEscEol  = pCompiler->iEscEol;
+    unsigned cEscEols = pCompiler->cEscEols;
+    unsigned cWords   = 0;
+
+    /* Precoditions. */
+    KMK_CC_ASSERT(cchLeft > 0);
+    KMK_CC_ASSERT(!KMK_CC_EVAL_IS_SPACE(*pchWord));
+
+    /*
+     * If we don't have to deal with escaped EOLs, the find-end-of word search
+     * becomes a little bit simpler.  Since this function will be used a lot
+     * for simple lines with single words, this could maybe save a nano second
+     * or two.
+     */
+    if (iEscEol >= cEscEols)
+    {
+        do
+        {
+            size_t          cchSkipAfter = 0;
+            size_t          cchWord      = 0;
+            KMKCCEVALTOKEN  enmToken     = kKmkCcEvalToken_WordPlain;
+
+            /* Find the end of the current word. */
+            while (cchWord < cchLeft)
+            {
+                char ch = pchWord[cchWord];
+                if (!KMK_CC_EVAL_IS_SPACE_OR_DOLLAR(ch))
+                    cchWord++;
+                else if (ch == '$')
+                {
+                    enmToken = kKmkCcEvalToken_WordWithDollar;
+                    cchWord = kmk_cc_eval_parse_along_dollar_simple(pCompiler, cchWord, pchWord, cchLeft);
+                }
+                else
+                    break;
+            }
+
+            /* Add the word. */
+            KMK_CC_EVAL_ENSURE_WORDS(pCompiler, cWords + 1);
+            pCompiler->paWords[cWords].pchWord  = pchWord;
+            pCompiler->paWords[cWords].cchWord  = cchWord;
+            pCompiler->paWords[cWords].enmToken = enmToken;
+            cWords++;
+
+            /* Skip the work and any trailing blanks. */
+            cchWord += cchSkipAfter;
+            pchWord += cchWord;
+            cchLeft -= cchWord;
+            KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+        } while (cchLeft > 0);
+    }
+    /*
+     * Have to deal with escaped EOLs.
+     */
+    else
+    {
+        const char *pszContent = pCompiler->pszContent;
+        do
+        {
+            size_t          cchSkipAfter = 0;
+            size_t          cchWord      = 0;
+            KMKCCEVALTOKEN  enmToken     = kKmkCcEvalToken_WordPlain;
+
+            /* Find the end of the current word. */
+            while (cchWord < cchLeft)
+            {
+                char ch = pchWord[cchWord];
+                if (!KMK_CC_EVAL_IS_SPACE_DOLLAR_OR_SLASH(ch))
+                    cchWord++;
+                else if (ch == '$')
+                {
+                    enmToken = kKmkCcEvalToken_WordWithDollar;
+                    cchWord = kmk_cc_eval_parse_along_dollar_esc_eol(pCompiler, cchWord, pchWord, cchLeft);
+                }
+                else if (ch != '\\')
+                    break;
+                else if ((size_t)(&pchWord[cchWord] - pszContent) != pCompiler->paEscEols[iEscEol].offEsc)
+                    cchWord++;
+                else
+                {
+                    cchSkipAfter = pCompiler->paEscEols[iEscEol].offEol - pCompiler->paEscEols[iEscEol].offEsc
+                                 + pCompiler->cchEolSeq;
+                    iEscEol++;
+                    break;
+                }
+            }
+
+            /* Add the word. */
+            KMK_CC_EVAL_ENSURE_WORDS(pCompiler, cWords + 1);
+            pCompiler->paWords[cWords].pchWord  = pchWord;
+            pCompiler->paWords[cWords].cchWord  = cchWord;
+            pCompiler->paWords[cWords].enmToken = enmToken;
+            cWords++;
+
+            /* Skip the work and any trailing blanks. */
+            cchWord += cchSkipAfter;
+            pchWord += cchWord;
+            cchLeft -= cchWord;
+            KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+        } while (cchLeft > 0);
+    }
+    pCompiler->cWords = cWords;
+    return cWords;
+}
+
+
+
+
+/**
+ * Gather string from segments and optional space insertion trick.
+ *
+ * @param   pszDst          The destination buffer.
+ * @param   paSegs          The source segments.
+ * @param   cSegs           The number of segments.
+ * @param   cchDstPrepped   The size of pszDst, excluding the terminator.
+ */
+static void kmk_cc_eval_strcpyv(char *pszDst, PCKMKCCEVALSTRCPYSEG paSegs, unsigned cSegs, size_t cchDstPrepped)
+{
+    const char *pszDstStart = pszDst;
+    unsigned    iSeg = 0;
+    while (iSeg < cSegs)
+    {
+        size_t cchToCopy;
+        if (paSegs[iSeg].cchSrcAndPrependSpace >= 0)
+            cchToCopy = paSegs[iSeg].cchSrcAndPrependSpace;
+        else
+        {
+            cchToCopy = -paSegs[iSeg].cchSrcAndPrependSpace;
+            *pszDst++ = ' ';
+        }
+
+        memcpy(pszDst, paSegs[iSeg].pchSrc, cchToCopy);
+        pszDst += cchToCopy;
+
+        iSeg++;
+    }
+    *pszDst = '\0';
+    KMK_CC_ASSERT(pszDst == &pszDstStart[cchDstPrepped]); K_NOREF(pszDstStart); K_NOREF(cchDstPrepped);
+}
+
+
+/**
+ * Allocate a byte buffer and ocpy the prepared string segments into it.
+ *
+ * The caller must call kmk_cc_block_realign!
+ *
+ * @returns Pointer to the duplicated string.
+ * @param   pCompiler       The compiler instance data.
+ * @param   cchPrepped      The length of the prepped string segments.
+ */
+static char *kmk_cc_eval_strdup_prepped(PKMKCCEVALCOMPILER pCompiler, size_t cchPrepped)
+{
+    char *pszCopy = kmk_cc_block_byte_alloc(pCompiler->ppBlockTail, cchPrepped + 1);
+    kmk_cc_eval_strcpyv(pszCopy, pCompiler->paStrCopySegs, pCompiler->cStrCopySegs, cchPrepped);
+    return pszCopy;
+}
+
+
+/**
+ * Strip trailing spaces from prepped copy
+ *
+ * @param   paSegs          The segments to strip trailing chars from.
+ * @param   pcSegs          The number of segments (in/out).
+ * @param   pcchDstPrepped  The total number of chars prepped (in/out).
+ */
+static void kmk_cc_eval_strip_right_v(PKMKCCEVALSTRCPYSEG paSegs, unsigned *pcSegs, size_t *pcchDstPrepped)
+{
+    /*
+     * Work our way thru the segments, from the end obviously.
+     */
+    size_t   cchDstPrepped = *pcchDstPrepped;
+    unsigned cSegs         = *pcSegs;
+    while (cSegs > 0)
+    {
+        unsigned    iSeg   = cSegs - 1;
+        const char *pszSrc = paSegs[iSeg].pchSrc;
+        size_t      cchSrc = paSegs[iSeg].cchSrcAndPrependSpace >= 0
+                           ? paSegs[iSeg].cchSrcAndPrependSpace : -paSegs[iSeg].cchSrcAndPrependSpace;
+        if (cchSrc)
+        {
+            /*
+             * Check for trailing spaces.
+             */
+            size_t cchSrcOrg;
+            if (!KMK_CC_EVAL_IS_SPACE(pszSrc[cchSrc - 1]))
+            {
+                /* Special case: No trailing spaces at all. No need to update
+                                 input/output variables. */
+                if (cSegs == *pcSegs)
+                    return;
+                break;
+            }
+
+            /* Skip the rest of the trailing spaces. */
+            cchSrcOrg = cchSrc;
+            do
+                cchSrc--;
+            while (cchSrc > 0 && KMK_CC_EVAL_IS_SPACE(pszSrc[cchSrc - 1]));
+
+            if (cchSrc > 0)
+            {
+                /*
+                 * There are non-space chars in this segment. So, update the
+                 * segment and total char count and we're done.
+                 */
+                cchDstPrepped -= cchSrcOrg - cchSrc;
+                if (paSegs[iSeg].cchSrcAndPrependSpace < 0)
+                    paSegs[iSeg].cchSrcAndPrependSpace = -(ssize_t)cchSrc;
+                else
+                    paSegs[iSeg].cchSrcAndPrependSpace = cchSrc;
+                break;
+            }
+
+            /*
+             * Skip the whole segment.
+             */
+            cchDstPrepped -= cchSrcOrg + (paSegs[iSeg].cchSrcAndPrependSpace < 0);
+        }
+        cSegs--;
+    }
+    *pcchDstPrepped = cchDstPrepped;
+    *pcSegs         = cSegs;
+}
+
+/**
+ * Helper for ensuring that we've got sufficient number of string copy segments.
+ */
+#define KMK_CC_EVAL_ENSURE_STRCOPY_SEGS(a_pCompiler, a_cRequiredSegs) \
+    do { \
+        if ((a_cRequiredSegs) < (a_pCompiler)->cStrCopySegsAllocated) \
+        { /* likely */ } \
+        else \
+        { \
+            unsigned cEnsureSegs = ((a_cRequiredSegs) + 3 /*15*/) & ~(unsigned)3/*15*/; \
+            KMK_CC_ASSERT((a_cRequiredSegs) < 0x8000); \
+            (a_pCompiler)->paStrCopySegs = (PKMKCCEVALSTRCPYSEG)xmalloc(cEnsureSegs * sizeof((a_pCompiler)->paStrCopySegs)[0]); \
+        } \
+    } while (0)
+
+
+/**
+ * Prepares for copying a normal line, extended version.
+ *
+ * This does not assume that we start on a word, it can handle any starting
+ * character.  It can also prepare partial copies.
+ *
+ * In addition to the returned information, this will store instruction in
+ * paEscEols for the following kmk_cc_eval_strcpyv() call.
+ *
+ * This will advance pCompiler->iEscEol, so that it's possible to use the common
+ * macros and helpers for parsing what comes afterwards.
+ *
+ * @returns The number of chars that will be copied by kmk_cc_eval_strcpyv().
+ * @param   pCompiler               The compiler instance data.
+ * @param   pchWord                 Pointer to the first char to copy from the
+ *                                  current line. This must be the start of a
+ *                                  word.
+ * @param   cchLeft                 The number of chars left on the current line
+ *                                  starting at @a pchWord.
+ */
+static size_t kmk_cc_eval_prep_normal_line_ex(PKMKCCEVALCOMPILER pCompiler, const char * const pchWord, size_t cchLeft)
+{
+    size_t          cchRet;
+    unsigned        iEscEol  = pCompiler->iEscEol;
+    unsigned const  cEscEols = pCompiler->cEscEols;
+
+    KMK_CC_ASSERT(iEscEol <= cEscEols);
+
+    if (cchLeft > 0)
+    {
+        /*
+         * If there are no escaped EOLs left, just copy exactly
+         * what was passed in.
+         */
+        if (iEscEol >= cEscEols)
+        {
+            KMK_CC_EVAL_ENSURE_STRCOPY_SEGS(pCompiler, 1);
+            pCompiler->cStrCopySegs = 1;
+            pCompiler->paStrCopySegs[0].pchSrc = pchWord;
+            pCompiler->paStrCopySegs[0].cchSrcAndPrependSpace = cchRet = cchLeft;
+        }
+        /*
+         * Ok, we have to deal with escaped EOLs and do the proper
+         * replacement of escaped newlines with space.  The deal is that we
+         * collaps all whitespace before and after one or more newlines into a
+         * single space.  (FreeBSD make does this differently, by the by.)
+         */
+        else
+        {
+            const char * const  pszContent    = pCompiler->pszContent;
+            size_t              offWord       = pchWord - pCompiler->pszContent;
+            size_t const        offLineEnd    = offWord + cchLeft;             /* Note! Not necessarily end of line.*/
+            size_t              offEsc;
+            size_t              fPendingSpace = 0;
+            unsigned            cSegs         = 0;
+            size_t              cchSeg;
+
+            /* Go nuts checking our preconditions here. */
+            KMK_CC_ASSERT(offWord >= pCompiler->offLine);
+            KMK_CC_ASSERT(offWord + cchLeft <= pCompiler->offLine + pCompiler->cchLine);
+            KMK_CC_ASSERT(offWord + cchLeft <= pCompiler->cchContent);
+            KMK_CC_ASSERT(offWord <= pCompiler->paEscEols[iEscEol].offEsc);
+            KMK_CC_ASSERT(offWord >= (iEscEol ? pCompiler->paEscEols[cEscEols - 1].offEol + pCompiler->cchEolSeq
+                                              : pCompiler->offLine));
+            KMK_CC_ASSERT(offWord <  offLineEnd);
+
+            /* Make sure we've got more than enough segments to fill in. */
+            KMK_CC_EVAL_ENSURE_STRCOPY_SEGS(pCompiler, cEscEols - iEscEol + 2);
+
+            /*
+             * All but the last line.
+             */
+            cchRet = 0;
+            do
+            {
+                KMK_CC_ASSERT(offWord < offLineEnd);
+                offEsc = pCompiler->paEscEols[iEscEol].offEsc;
+                if (offWord < offEsc)
+                {
+                    /* Strip trailing spaces. */
+                    while (offEsc > offWord && KMK_CC_EVAL_IS_SPACE(pszContent[offEsc - 1]))
+                        offEsc--;
+                    cchSeg = offEsc - offWord;
+                    if (cchSeg)
+                    {
+                        /* Add segment. */
+                        pCompiler->paStrCopySegs[cSegs].pchSrc = &pszContent[offWord];
+                        if (offEsc < offLineEnd)
+                        {
+                            pCompiler->paStrCopySegs[cSegs].cchSrcAndPrependSpace = fPendingSpace
+                                                                                  ? -(ssize_t)cchSeg : (ssize_t)cchSeg;
+                            cchRet       += cchSeg + fPendingSpace;
+                            cSegs        += 1;
+                            fPendingSpace = 1;
+                        }
+                        else
+                        {
+                            cchSeg = offLineEnd - offWord;
+                            pCompiler->paStrCopySegs[cSegs].cchSrcAndPrependSpace = fPendingSpace
+                                                                                  ? -(ssize_t)cchSeg : (ssize_t)cchSeg;
+                            pCompiler->cStrCopySegs = cSegs + 1;
+                            pCompiler->iEscEol      = iEscEol;
+                            return cchRet + cchSeg + fPendingSpace;
+                        }
+                    }
+                }
+                else
+                    KMK_CC_ASSERT(offWord == offEsc);
+
+                /* Next line. */
+                offWord = pCompiler->paEscEols[iEscEol].offEol + pCompiler->cchEolSeq;
+                iEscEol++;
+
+                /* Strip leading spaces. */
+                while (offWord < offLineEnd && KMK_CC_EVAL_IS_SPACE(pszContent[offWord]))
+                    offWord++;
+                if (offWord >= offLineEnd)
+                {
+                    pCompiler->cStrCopySegs = cSegs;
+                    pCompiler->iEscEol      = iEscEol;
+                    return cchRet;
+                }
+            } while (iEscEol < cEscEols);
+
+            /*
+             * The last line.
+             */
+            cchSeg      = offLineEnd - offWord;
+            cchRet     += cchSeg;
+            pCompiler->paStrCopySegs[cSegs].pchSrc                = &pszContent[offWord];
+            pCompiler->paStrCopySegs[cSegs].cchSrcAndPrependSpace = fPendingSpace
+                                                                  ? -(ssize_t)cchSeg : (ssize_t)cchSeg;
+            pCompiler->cStrCopySegs = cSegs + 1;
+            pCompiler->iEscEol      = iEscEol;
+        }
+    }
+    /*
+     * Odd case: Nothing to copy.
+     */
+    else
+    {
+        cchRet = 0;
+        pCompiler->cStrCopySegs = 0;
+    }
+    return cchRet;
+}
+
+
+/**
+ * Prepares for copying a normal line, from the given position all the way to
+ * the end.
+ *
+ * In addition to the returned information, this will store instruction in
+ * paStrCopySegs and cSTrCopySeg for the following kmk_cc_eval_strcpyv() call.
+ *
+ * @returns The number of chars that will be copied by kmk_cc_eval_strcpyv().
+ * @param   pCompiler               The compiler instance data.
+ * @param   pchWord                 Pointer to the first char to copy from the
+ *                                  current line. This must be the start of a
+ *                                  word.
+ * @param   cchLeft                 The number of chars left on the current line
+ *                                  starting at @a pchWord.
+ */
+static size_t kmk_cc_eval_prep_normal_line(PKMKCCEVALCOMPILER pCompiler, const char * const pchWord, size_t cchLeft)
+{
+    size_t          cchRet;
+    unsigned        iEscEol  = pCompiler->iEscEol;
+    unsigned const  cEscEols = pCompiler->cEscEols;
+
+    KMK_CC_ASSERT(cchLeft > 0);
+    KMK_CC_ASSERT(!KMK_CC_EVAL_IS_SPACE(*pchWord)); /* The fact that we're standing at a word, is exploited below. */
+    KMK_CC_ASSERT(iEscEol <= cEscEols);
+
+    /*
+     * If there are no escaped EOLs left, just copy what was specified,
+     * optionally sans any trailing spaces.
+     */
+    if (iEscEol >= cEscEols)
+    {
+        cchRet = cchLeft;
+
+        KMK_CC_EVAL_ENSURE_STRCOPY_SEGS(pCompiler, 1);
+        pCompiler->cStrCopySegs = 1;
+        pCompiler->paStrCopySegs[0].pchSrc = pchWord;
+        pCompiler->paStrCopySegs[0].cchSrcAndPrependSpace = cchRet;
+    }
+    /*
+     * Ok, we have to deal with escaped EOLs and do the proper
+     * replacement of escaped newlines with space.  The deal is that we
+     * collaps all whitespace before and after one or more newlines into a
+     * single space.  (FreeBSD make does this differently, by the by.)
+     */
+    else
+    {
+        const char *pszContent = pCompiler->pszContent;
+        size_t      offWord    = pchWord - pCompiler->pszContent;
+        size_t      offEsc;
+        size_t      fPendingSpace;
+        size_t      cchSeg;
+        unsigned    cSegs      = 0;
+
+        /* Go nuts checking our preconditions here. */
+        KMK_CC_ASSERT(offWord >= pCompiler->offLine);
+        KMK_CC_ASSERT(offWord + cchLeft <= pCompiler->offLine + pCompiler->cchLine);
+        KMK_CC_ASSERT(offWord + cchLeft <= pCompiler->cchContent);
+        KMK_CC_ASSERT(offWord <  pCompiler->paEscEols[iEscEol].offEsc);
+        KMK_CC_ASSERT(offWord >= (iEscEol ? pCompiler->paEscEols[iEscEol - 1].offEol + pCompiler->cchEolSeq : pCompiler->offLine));
+
+        /* Make sure we've got more than enough segments to fill in. */
+        KMK_CC_EVAL_ENSURE_STRCOPY_SEGS(pCompiler, cEscEols - iEscEol + 2);
+
+        /*
+         * First line - We're at the start of a word, so no left stripping needed.
+         */
+        offEsc = pCompiler->paEscEols[iEscEol].offEsc;
+        KMK_CC_ASSERT(offEsc > offWord);
+        while (KMK_CC_EVAL_IS_SPACE(pszContent[offEsc - 1]))
+            offEsc--;
+        KMK_CC_ASSERT(offEsc > offWord);
+
+        fPendingSpace = 1;
+        cchRet        = offEsc - offWord;
+        pCompiler->paStrCopySegs[cSegs].cchSrcAndPrependSpace = cchRet;
+        pCompiler->paStrCopySegs[cSegs].pchSrc                = pchWord;
+        cSegs++;
+
+        offWord = pCompiler->paEscEols[iEscEol].offEol + pCompiler->cchEolSeq;
+        iEscEol++;
+
+        /*
+         * All but the last line.
+         */
+        while (iEscEol < cEscEols)
+        {
+            offEsc = pCompiler->paEscEols[iEscEol].offEsc;
+
+            /* Strip leading spaces. */
+            while (offWord < offEsc && KMK_CC_EVAL_IS_SPACE(pszContent[offWord]))
+                offWord++;
+
+            if (offWord < offEsc)
+            {
+                /* Strip trailing spaces. */
+                while (KMK_CC_EVAL_IS_SPACE(pszContent[offEsc - 1]))
+                    offEsc--;
+                cchSeg = offEsc - offWord;
+                pCompiler->paStrCopySegs[cSegs].cchSrcAndPrependSpace = fPendingSpace ? -(ssize_t)cchSeg : (ssize_t)cchSeg;
+                cchRet += cchSeg + fPendingSpace;
+                pCompiler->paStrCopySegs[cSegs].pchSrc                = &pszContent[offWord];
+                cSegs  += 1;
+                fPendingSpace = 1;
+            }
+
+            /* Next. */
+            offWord = pCompiler->paEscEols[iEscEol].offEol + pCompiler->cchEolSeq;
+            iEscEol++;
+        }
+
+        /*
+         * Final line. We must calculate the end of line offset our selves here.
+         */
+        offEsc = &pchWord[cchLeft] - pszContent;
+        while (offWord < offEsc && KMK_CC_EVAL_IS_SPACE(pszContent[offWord]))
+            offWord++;
+
+        if (offWord < offEsc)
+        {
+            cchSeg = offEsc - offWord;
+            pCompiler->paStrCopySegs[cSegs].cchSrcAndPrependSpace = fPendingSpace ? -(ssize_t)cchSeg : (ssize_t)cchSeg;
+            cchRet += cchSeg + fPendingSpace;
+            pCompiler->paStrCopySegs[cSegs].pchSrc                = &pszContent[offWord];
+            cSegs  += 1;
+        }
+
+        pCompiler->cStrCopySegs = cSegs;
+    }
+    return cchRet;
+}
+
+
+/**
+ * Common worker for all kmk_cc_eval_do_if*() functions.
+ *
+ * @param   pCompiler   The compiler state.
+ * @param   pIfCore     The new IF statement.
+ * @param   fInElse     Set if this is an 'else if' (rather than just 'if').
+ */
+static void kmk_cc_eval_do_if_core(PKMKCCEVALCOMPILER pCompiler, PKMKCCEVALIFCORE pIfCore, int fInElse)
+{
+    unsigned iIf = pCompiler->cIfs;
+    if (!fInElse)
+    {
+        /* Push an IF statement. */
+        if (iIf < KMK_CC_EVAL_MAX_IF_DEPTH)
+        {
+            pCompiler->cIfs = iIf + 1;
+            pCompiler->apIfs[iIf] = pIfCore;
+            pIfCore->pPrevCond = NULL;
+        }
+        else
+            kmk_cc_eval_fatal(pCompiler, NULL, "Too deep IF nesting");
+    }
+    else if (iIf > 0)
+    {
+        /* Link an IF statement. */
+        iIf--;
+        pIfCore->pPrevCond    = pCompiler->apIfs[iIf];
+        pCompiler->apIfs[iIf] = pIfCore;
+    }
+    else
+        kmk_cc_eval_fatal(pCompiler, NULL, "'else if' without 'if'");
+    pIfCore->pNextTrue    = (PKMKCCEVALCORE)kmk_cc_block_get_next_ptr(*pCompiler->ppBlockTail);
+    pIfCore->pNextFalse   = NULL; /* This is set by else or endif. */
+    pIfCore->pTrueEndJump = NULL; /* This is set by else or endif. */
+}
+
+
+/**
+ * Deals with 'if expr' and 'else if expr' statements.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     First char after 'if'.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ * @param   fInElse     Set if this is an 'else if' (rather than just 'if').
+ */
+static int kmk_cc_eval_do_if(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft, int fInElse)
+{
+    KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+    if (cchLeft)
+    {
+        PKMKCCEVALIFEXPR pInstr;
+        size_t           cchExpr = kmk_cc_eval_prep_normal_line(pCompiler, pchWord, cchLeft);
+        kmk_cc_eval_strip_right_v(pCompiler->paStrCopySegs, &pCompiler->cStrCopySegs, &cchExpr);
+
+        pInstr = (PKMKCCEVALIFEXPR)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, KMKCCEVALIFEXPR_SIZE(cchExpr));
+        kmk_cc_eval_strcpyv(pInstr->szExpr, pCompiler->paStrCopySegs, pCompiler->cStrCopySegs, cchExpr);
+        pInstr->cchExpr = cchExpr;
+        pInstr->IfCore.Core.enmOpcode = kKmkCcEvalInstr_if;
+        pInstr->IfCore.Core.iLine     = pCompiler->iLine;
+        kmk_cc_eval_do_if_core(pCompiler, &pInstr->IfCore, fInElse);
+    }
+    else
+        kmk_cc_eval_fatal(pCompiler, pchWord, "Expected expression after 'if' directive");
+    return 1;
+}
+
+
+/**
+ * Deals with 'ifdef var', 'ifndef var', 'else ifdef var' and 'else ifndef var'
+ * statements.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler       The compiler state.
+ * @param   pchWord         First char after 'if[n]def'.
+ * @param   cchLeft         The number of chars left to parse on this line.
+ * @param   fInElse         Set if this is an 'else if' (rather than just 'if').
+ * @param   fPositiveStmt   Set if 'ifdef', clear if 'ifndef'.
+ */
+static int kmk_cc_eval_do_ifdef(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft, int fInElse, int fPositiveStmt)
+{
+    KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+    if (cchLeft)
+    {
+        /*
+         * Skip to the end of the variable name.
+         * GNU make just does normal word parsing, so lets do that too.
+         */
+        unsigned const  iSavedEscEol = pCompiler->iEscEol;
+        unsigned        cWords = kmk_cc_eval_parse_words(pCompiler, pchWord, cchLeft);
+        if (cWords == 0)
+        {
+            PCKMKCCEVALWORD pWord = pCompiler->paWords;
+            if (pWord->enmToken == kKmkCcEvalToken_WordPlain)
+            {
+                PKMKCCEVALIFDEFPLAIN pInstr;
+                pInstr = (PKMKCCEVALIFDEFPLAIN)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, sizeof(*pInstr));
+                pInstr->IfCore.Core.enmOpcode = fPositiveStmt ? kKmkCcEvalInstr_ifdef_plain : kKmkCcEvalInstr_ifndef_plain;
+                pInstr->IfCore.Core.iLine     = pCompiler->iLine;
+                pInstr->pszName = strcache2_add(&variable_strcache, pWord->pchWord, pWord->cchWord);
+                kmk_cc_eval_do_if_core(pCompiler, &pInstr->IfCore, fInElse);
+            }
+            else
+            {
+                PKMKCCEVALIFDEFDYNAMIC  pInstr;
+                size_t                  cchCopy;
+                char const             *pszCopy;
+
+                pInstr = (PKMKCCEVALIFDEFDYNAMIC)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, sizeof(*pInstr));
+
+                /** @todo Make the subprogram embed necessary strings. */
+                if (pWord->enmToken != kKmkCcEvalToken_WordWithDollar)
+                {
+                    pszCopy = kmk_cc_block_strdup(pCompiler->ppBlockTail, pWord->pchWord, pWord->cchWord);
+                    cchCopy = pWord->cchWord;
+                }
+                else
+                {
+                    KMK_CC_ASSERT(pWord->enmToken == kKmkCcEvalToken_WordWithDollarAndEscEol);
+                    pCompiler->iEscEol = iSavedEscEol;
+                    cchCopy = kmk_cc_eval_prep_normal_line_ex(pCompiler, pWord->pchWord, cchLeft);
+                    pszCopy = kmk_cc_eval_strdup_prepped(pCompiler, cchCopy);
+                }
+                kmk_cc_block_realign(pCompiler->ppBlockTail);
+
+                pInstr->IfCore.Core.enmOpcode = fPositiveStmt ? kKmkCcEvalInstr_ifdef_dynamic : kKmkCcEvalInstr_ifndef_dynamic;
+                pInstr->IfCore.Core.iLine     = pCompiler->iLine;
+                pInstr->uPadding              = 0;
+                kmk_cc_eval_compile_string_exp_subprog(pCompiler, pszCopy, cchCopy, &pInstr->NameSubprog);
+
+                kmk_cc_eval_do_if_core(pCompiler, &pInstr->IfCore, fInElse);
+            }
+        }
+        else
+        {
+            KMK_CC_ASSERT(cWords > 1);
+            kmk_cc_eval_fatal(pCompiler, pCompiler->paWords[1].pchWord,
+                              "Bogus stuff after 'if%sdef' variable name", fPositiveStmt ? "" : "n");
+        }
+    }
+    else
+        kmk_cc_eval_fatal(pCompiler, pchWord, "Expected expression after 'if' directive");
+    return 1;
+}
+
+
+/**
+ * Deals with 'ifeq (a,b)', 'ifeq "a" "b"', 'ifneq (a,b)', 'ifneq "a" "b"',
+ * 'else ifeq (a,b)', 'else ifeq "a" "b"', 'else ifneq (a,b)' and
+ * 'else ifneq "a" "b"' statements.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler       The compiler state.
+ * @param   pchWord         First char after 'if[n]eq'.
+ * @param   cchLeft         The number of chars left to parse on this line.
+ * @param   fInElse         Set if this is an 'else if' (rather than just 'if').
+ * @param   fPositiveStmt   Set if 'ifeq', clear if 'ifneq'.
+ */
+static int kmk_cc_eval_do_ifeq(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft, int fInElse, int fPositiveStmt)
+{
+    KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+    if (cchLeft)
+    {
+        /*
+         * There are two forms:
+         *
+         *   ifeq (string1, string2)
+         *   ifeq "string1" 'string2'
+         *
+         */
+        const char * const  pchEnd = &pchWord[cchLeft];
+        PKMKCCEVALIFEQ      pInstr = (PKMKCCEVALIFEQ)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, sizeof(*pInstr));
+
+        struct
+        {
+            char           *pszCopy;
+            size_t          cchCopy;
+            int             fPlain;
+        } Left, Right;
+
+        char ch = *pchWord;
+        if (ch == '(')
+        {
+            int      cCounts;
+            size_t   off;
+
+            /*
+             * The left side ends with a comma.  We respect parentheses, but
+             * not curly brackets.
+             */
+
+            /* Skip the parenthesis. */
+            pchWord++;
+            cchLeft--;
+
+            /* Find the comma, checking for non-plainness. */
+            cCounts = 0;
+            Left.fPlain = 1;
+            for (off = 0; off < cchLeft; off++)
+            {
+                ch = pchWord[off];
+                if (!KMK_CC_EVAL_IS_PAREN_COMMA_OR_DOLLAR(ch))
+                { /* likely */ }
+                else if (ch == '$')
+                    Left.fPlain = 0;
+                else if (ch == '(')
+                    cCounts++;
+                else if (ch == ')')
+                    cCounts--; /** @todo warn if it goes negative. */
+                else if (ch == ',' && cCounts == 0)
+                    break;
+                else
+                    KMK_CC_ASSERT(cCounts > 0);
+            }
+            if (ch == ',' && cCounts == 0) { /* likely */ }
+            else kmk_cc_eval_fatal(pCompiler, &pchWord[off], "Expected ',' before end of line");
+
+            /* Copy out the string. */
+            Left.cchCopy = kmk_cc_eval_prep_normal_line_ex(pCompiler, pchWord, off);
+            kmk_cc_eval_strip_right_v(pCompiler->paStrCopySegs, &pCompiler->cStrCopySegs, &Left.cchCopy);
+            Left.pszCopy = kmk_cc_eval_strdup_prepped(pCompiler, Left.cchCopy);
+
+            /* Skip past the comma and any following spaces. */
+            pchWord += off + 1;
+            cchLeft -= off + 1;
+            if (   cchLeft /** @todo replace with straight 'isspace' that takes escaped EOLs into account. */
+                && KMK_CC_EVAL_IS_SPACE_AFTER_WORD(pCompiler, pchWord[0], pchWord[1], cchLeft))
+                KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+
+            /*
+             * Ditto for the right side, only it ends with a closing parenthesis.
+             */
+            cCounts = 1;
+            Right.fPlain = 1;
+            for (off = 0; off < cchLeft; off++)
+            {
+                ch = pchWord[off];
+                if (!KMK_CC_EVAL_IS_PAREN_COMMA_OR_DOLLAR(ch))
+                { /* likely */ }
+                else if (ch == '$')
+                    Right.fPlain = 0;
+                else if (ch == '(')
+                    cCounts++;
+                else if (ch == ')')
+                {
+                    if (--cCounts == 0)
+                        break;
+                }
+                else
+                    KMK_CC_ASSERT(cCounts > 0 || ch == ',');
+            }
+            if (ch == ')' && cCounts == 0) { /* likely */ }
+            else kmk_cc_eval_fatal(pCompiler, &pchWord[off], "Expected ')' before end of line");
+
+            /* Copy out the string. */
+            Right.cchCopy = kmk_cc_eval_prep_normal_line_ex(pCompiler, pchWord, off);
+            kmk_cc_eval_strip_right_v(pCompiler->paStrCopySegs, &pCompiler->cStrCopySegs, &Right.cchCopy);
+            Right.pszCopy = kmk_cc_eval_strdup_prepped(pCompiler, Right.cchCopy);
+
+            /* Skip past the parenthesis. */
+            pchWord += off + 1;
+            cchLeft -= off + 1;
+        }
+        else if (ch == '"' || ch == '\'')
+        {
+            const char *pchTmp;
+
+            /*
+             * Quoted left side.
+             */
+            /* Skip leading quote. */
+            pchWord++;
+            cchLeft--;
+
+            /* Locate the end quote. */
+            pchTmp = (const char *)memchr(pchWord, ch, cchLeft);
+            if (pchTmp) { /* likely */ }
+            else kmk_cc_eval_fatal(pCompiler, pchWord - 1, "Unbalanced quote in first if%seq string", fPositiveStmt ? "" : "n");
+
+            Left.cchCopy = kmk_cc_eval_prep_normal_line_ex(pCompiler, pchWord, pchTmp - pchWord);
+            Left.pszCopy = kmk_cc_eval_strdup_prepped(pCompiler, Left.cchCopy);
+            Left.fPlain  = memchr(Left.pszCopy, '$', Left.cchCopy) == NULL;
+
+            /* skip end quote */
+            pchWord  = pchTmp + 1;
+            cchLeft  = pchEnd - pchWord;
+
+            /* Skip anything inbetween the left and right hand side (not mandatory). */
+            if (   cchLeft /** @todo replace with straight 'isspace' that takes escaped EOLs into account. */
+                && KMK_CC_EVAL_IS_SPACE_AFTER_WORD(pCompiler, pchWord[0], pchWord[1], cchLeft))
+                KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+
+            /*
+             * Quoted right side.
+             */
+            if (   cchLeft > 0
+                && ( (ch = *pchWord) != '"' || ch == '\'') )
+            {
+                /* Skip leading quote. */
+                pchWord++;
+                cchLeft--;
+
+                /* Locate the end quote. */
+                pchTmp = (const char *)memchr(pchWord, ch, cchLeft);
+                if (pchTmp) { /* likely */ }
+                else kmk_cc_eval_fatal(pCompiler, pchWord - 1, "Unbalanced quote in second if%seq string", fPositiveStmt ? "" : "n");
+
+                Right.cchCopy = kmk_cc_eval_prep_normal_line_ex(pCompiler, pchWord, pchTmp - pchWord);
+                Right.pszCopy = kmk_cc_eval_strdup_prepped(pCompiler, Right.cchCopy);
+                Right.fPlain  = memchr(Right.pszCopy, '$', Right.cchCopy) == NULL;
+
+                /* skip end quote */
+                pchWord  = pchTmp + 1;
+                cchLeft  = pchEnd - pchWord;
+            }
+            else
+                kmk_cc_eval_fatal(pCompiler, pchWord, "Expected a second quoted string for 'if%seq'",
+                                  fPositiveStmt ? "" : "n");
+        }
+        else
+            kmk_cc_eval_fatal(pCompiler, pchWord, "Expected parentheses or quoted string after 'if%seq'",
+                              fPositiveStmt ? "" : "n");
+        kmk_cc_block_realign(pCompiler->ppBlockTail);
+
+        /*
+         * Initialize the instruction.
+         */
+        pInstr->IfCore.Core.enmOpcode = fPositiveStmt ? kKmkCcEvalInstr_ifeq : kKmkCcEvalInstr_ifneq;
+        pInstr->IfCore.Core.iLine     = pCompiler->iLine;
+        kmk_cc_eval_init_subprogram_or_plain(pCompiler, &pInstr->Left, Left.pszCopy, Left.cchCopy, Left.fPlain);
+        kmk_cc_eval_init_subprogram_or_plain(pCompiler, &pInstr->Right, Right.pszCopy, Right.cchCopy, Right.fPlain);
+        kmk_cc_eval_do_if_core(pCompiler, &pInstr->IfCore, fInElse);
+
+        /*
+         * Make sure there is nothing following the variable name.
+         */
+        KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+        if (cchLeft)
+            kmk_cc_eval_fatal(pCompiler, pchWord, "Bogus stuff after 'if%sdef' variable name", fPositiveStmt ? "" : "n");
+    }
+    else
+        kmk_cc_eval_fatal(pCompiler, pchWord, "Expected expression after 'if' directive");
+    return 1;
+}
+
+
+/**
+ * Deals with 'if1of (set-a,set-b)', 'ifn1of (set-a,set-b)',
+ * 'else if1of (set-a,set-b)' and 'else ifn1of (set-a,set-b)' statements.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler       The compiler state.
+ * @param   pchWord         First char after 'if[n]1of'.
+ * @param   cchLeft         The number of chars left to parse on this line.
+ * @param   fInElse         Set if this is an 'else if' (rather than just 'if').
+ * @param   fPositiveStmt   Set if 'if1of', clear if 'ifn1of'.
+ */
+static int kmk_cc_eval_do_if1of(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft, int fInElse, int fPositiveStmt)
+{
+    KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+    if (cchLeft)
+    {
+        /*
+         * This code is (currently) very similar to kmk_cc_eval_do_ifeq.
+         * However, we may want to add hashing optimizations of plain text,
+         * and we don't want to support the quoted form as it is not necessary
+         * and may interfere with support for quoted words later on.
+         */
+        PKMKCCEVALIF1OF     pInstr = (PKMKCCEVALIF1OF)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, sizeof(*pInstr));
+
+        struct
+        {
+            char           *pszCopy;
+            size_t          cchCopy;
+            int             fPlain;
+        } Left, Right;
+
+        char ch = *pchWord;
+        if (ch == '(')
+        {
+            int      cCounts;
+            size_t   off;
+
+            /*
+             * The left side ends with a comma.  We respect parentheses, but
+             * not curly brackets.
+             */
+
+            /* Skip the parenthesis. */
+            pchWord++;
+            cchLeft--;
+
+            /* Find the comma, checking for non-plainness. */
+            cCounts = 0;
+            Left.fPlain = 1;
+            for (off = 0; off < cchLeft; off++)
+            {
+                ch = pchWord[off];
+                if (!KMK_CC_EVAL_IS_PAREN_COMMA_OR_DOLLAR(ch))
+                { /* likely */ }
+                else if (ch == '$')
+                    Left.fPlain = 0;
+                else if (ch == '(')
+                    cCounts++;
+                else if (ch == ')')
+                    cCounts--; /** @todo warn if it goes negative. */
+                else if (ch == ',' && cCounts == 0)
+                    break;
+                else
+                    KMK_CC_ASSERT(cCounts > 0);
+            }
+            if (ch == ',' && cCounts == 0) { /* likely */ }
+            else kmk_cc_eval_fatal(pCompiler, &pchWord[off], "Expected ',' before end of line");
+
+            /* Copy out the string. */
+            Left.cchCopy = kmk_cc_eval_prep_normal_line_ex(pCompiler, pchWord, off);
+            kmk_cc_eval_strip_right_v(pCompiler->paStrCopySegs, &pCompiler->cStrCopySegs, &Left.cchCopy);
+            Left.pszCopy = kmk_cc_eval_strdup_prepped(pCompiler, Left.cchCopy);
+
+            /* Skip past the comma and any following spaces. */
+            pchWord += off + 1;
+            cchLeft -= off + 1;
+            if (   cchLeft /** @todo replace with straight 'isspace' that takes escaped EOLs into account. */
+                && KMK_CC_EVAL_IS_SPACE_AFTER_WORD(pCompiler, pchWord[0], pchWord[1], cchLeft))
+                KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+
+            /*
+             * Ditto for the right side, only it ends with a closing parenthesis.
+             */
+            cCounts = 1;
+            Right.fPlain = 1;
+            for (off = 0; off < cchLeft; off++)
+            {
+                ch = pchWord[off];
+                if (!KMK_CC_EVAL_IS_PAREN_COMMA_OR_DOLLAR(ch))
+                { /* likely */ }
+                else if (ch == '$')
+                    Right.fPlain = 0;
+                else if (ch == '(')
+                    cCounts++;
+                else if (ch == ')')
+                {
+                    if (--cCounts == 0)
+                        break;
+                }
+                else
+                    KMK_CC_ASSERT(cCounts > 0 || ch == ',');
+            }
+            if (ch == ')' && cCounts == 0) { /* likely */ }
+            else kmk_cc_eval_fatal(pCompiler, &pchWord[off], "Expected ')' before end of line");
+
+            /* Copy out the string. */
+            Right.cchCopy = kmk_cc_eval_prep_normal_line_ex(pCompiler, pchWord, off);
+            kmk_cc_eval_strip_right_v(pCompiler->paStrCopySegs, &pCompiler->cStrCopySegs, &Right.cchCopy);
+            Right.pszCopy = kmk_cc_eval_strdup_prepped(pCompiler, Right.cchCopy);
+
+            /* Skip past the parenthesis. */
+            pchWord += off + 1;
+            cchLeft -= off + 1;
+        }
+        else
+            kmk_cc_eval_fatal(pCompiler, pchWord, "Expected parentheses after 'if%s1of'", fPositiveStmt ? "" : "n");
+        kmk_cc_block_realign(pCompiler->ppBlockTail);
+
+        /*
+         * Initialize the instruction.
+         */
+        pInstr->IfCore.Core.enmOpcode = fPositiveStmt ? kKmkCcEvalInstr_if1of : kKmkCcEvalInstr_ifn1of;
+        pInstr->IfCore.Core.iLine     = pCompiler->iLine;
+        kmk_cc_eval_init_subprogram_or_plain(pCompiler, &pInstr->Left, Left.pszCopy, Left.cchCopy, Left.fPlain);
+        kmk_cc_eval_init_subprogram_or_plain(pCompiler, &pInstr->Right, Right.pszCopy, Right.cchCopy, Right.fPlain);
+        kmk_cc_eval_do_if_core(pCompiler, &pInstr->IfCore, fInElse);
+
+        /*
+         * Make sure there is nothing following the variable name.
+         */
+        KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+        if (cchLeft)
+            kmk_cc_eval_fatal(pCompiler, pchWord, "Bogus stuff after 'if%s1of' variable name", fPositiveStmt ? "" : "n");
+    }
+    else
+        kmk_cc_eval_fatal(pCompiler, pchWord, "Expected expression after 'if' directive");
+    return 1;
+}
+
+
+/**
+ * Deals with 'else' and 'else ifxxx' statements.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     First char after 'define'.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ */
+static int kmk_cc_eval_do_else(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft)
+{
+    /*
+     * There must be an 'if' on the stack.
+     */
+    unsigned iIf = pCompiler->cIfs;
+    if (iIf > 0)
+    {
+        PKMKCCEVALIFCORE pIfCore = pCompiler->apIfs[--iIf];
+        if (!pIfCore->pTrueEndJump)
+        {
+            /* Emit a jump instruction that will take us from the 'True' block to the 'endif'. */
+            PKMKCCEVALJUMP  pInstr = (PKMKCCEVALJUMP)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, sizeof(*pInstr));
+            pInstr->Core.enmOpcode = kKmkCcEvalInstr_jump;
+            pInstr->Core.iLine     = pCompiler->iLine;
+            pInstr->pNext          = NULL;
+            pIfCore->pTrueEndJump  = pInstr;
+
+            /* The next instruction is the first in the 'False' block of the current 'if'.
+               Should this be an 'else if', this will be the 'if' instruction emitted below. */
+            pIfCore->pNextFalse    = (PKMKCCEVALCORE)kmk_cc_block_get_next_ptr(*pCompiler->ppBlockTail);
+        }
+        else if (iIf == 0)
+            kmk_cc_eval_fatal(pCompiler, pchWord, "2nd 'else' for 'if' at line %u", pIfCore->Core.iLine);
+        else
+            kmk_cc_eval_fatal(pCompiler, pchWord, "2nd 'else' in a row - missing 'endif' for 'if' at line %u?",
+                              pIfCore->Core.iLine);
+    }
+    else
+        kmk_cc_eval_fatal(pCompiler, pchWord, "'else' without 'if'");
+
+    /*
+     * Check for 'else ifxxx'. There can be nothing else following an else.
+     */
+    KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+    if (cchLeft)
+    {
+        if (   cchLeft > 2
+            && KMK_CC_WORD_COMP_CONST_2(pchWord, "if"))
+        {
+            pchWord += 2;
+            cchLeft -= 2;
+
+            if (KMK_CC_EVAL_WORD_COMP_IS_EOL(pCompiler, pchWord, cchLeft))
+                return kmk_cc_eval_do_if(pCompiler, pchWord, cchLeft, 1 /* in else */);
+
+            if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "eq", 2))
+                return kmk_cc_eval_do_ifeq( pCompiler, pchWord + 2, cchLeft - 2, 1 /* in else */, 1 /* positive */);
+
+            if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "def", 3))
+                return kmk_cc_eval_do_ifdef(pCompiler, pchWord + 3, cchLeft - 3, 1 /* in else */, 1 /* positive */);
+
+            if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "neq", 3))
+                return kmk_cc_eval_do_ifeq( pCompiler, pchWord + 3, cchLeft - 3, 1 /* in else */, 0 /* positive */);
+
+            if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "1of", 3))
+                return kmk_cc_eval_do_if1of(pCompiler, pchWord + 3, cchLeft - 3, 1 /* in else */, 1 /* positive */);
+
+            if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "ndef", 4))
+                return kmk_cc_eval_do_ifdef(pCompiler, pchWord + 4, cchLeft - 4, 1 /* in else */, 0 /* positive */);
+
+            if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "n1of", 4))
+                return kmk_cc_eval_do_if1of(pCompiler, pchWord + 4, cchLeft - 4, 1 /* in else */, 0 /* positive */);
+
+            pchWord -= 2;
+            cchLeft += 2;
+        }
+        kmk_cc_eval_fatal(pCompiler, pchWord, "Bogus stuff after 'else'");
+    }
+
+    return 1;
+}
+
+
+/**
+ * Deals with the 'endif' statement.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     First char after 'define'.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ */
+static int kmk_cc_eval_do_endif(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft)
+{
+    /*
+     * There must be an 'if' on the stack.  We'll POP it.
+     */
+    unsigned iIf = pCompiler->cIfs;
+    if (iIf > 0)
+    {
+        PKMKCCEVALCORE   pNextInstr;
+        PKMKCCEVALIFCORE pIfCore = pCompiler->apIfs[--iIf];
+        pCompiler->cIfs = iIf; /* POP! */
+
+        /* Update the jump targets for all IFs at this level. */
+        pNextInstr = (PKMKCCEVALCORE)kmk_cc_block_get_next_ptr(*pCompiler->ppBlockTail);
+        do
+        {
+            if (pIfCore->pTrueEndJump)
+            {
+                /* Make the true block jump here, to the 'endif'. The false block is already here. */
+                pIfCore->pTrueEndJump->pNext = pNextInstr;
+                KMK_CC_ASSERT(pIfCore->pNextFalse);
+            }
+            else
+            {
+                /* No 'else'. The false-case jump here, to the 'endif'. */
+                KMK_CC_ASSERT(!pIfCore->pNextFalse);
+                pIfCore->pNextFalse = pNextInstr;
+            }
+
+            pIfCore = pIfCore->pPrevCond;
+        } while (pIfCore);
+    }
+    else
+        kmk_cc_eval_fatal(pCompiler, pchWord, "'endif' without 'if'");
+
+    /*
+     * There shouldn't be anything trailing an 'endif'.
+     */
+    KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+    if (!cchLeft) { /* likely */ }
+    else kmk_cc_eval_fatal(pCompiler, pchWord, "Bogus stuff after 'else'");
+
+    return 1;
+}
+
+
+/**
+ * Parses a 'include file...', 'sinclude file...', '-include file...',
+ * 'includedep file...', 'includedep-queue file...' and
+ * 'includedep-flush file...'
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     First char after the include directive.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ * @param   enmOpcode   The opcode for the include directive we're parsing.
+ */
+static int kmk_cc_eval_do_include(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft, KMKCCEVALINSTR enmOpcode)
+{
+    KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+    if (cchLeft)
+    {
+        /*
+         * Split what's left up into words.
+         */
+/** @todo GNU make supports escape sequences for spaces here (they confusingly refers to this as quoting).  So, it's possible
+ * to include C:/Program\ Files/kBuild/footer.kmk if we wanted to.  It my intention to add support for double and/or single
+ * quoted files names to offer an alternative way of addressing this. */
+        unsigned cWords = kmk_cc_eval_parse_words(pCompiler, pchWord, cchLeft);
+        KMK_CC_EVAL_DPRINTF(("%s: cWords=%d\n", g_apszEvalInstrNms[enmOpcode], cWords));
+        if (cWords)
+        {
+            PKMKCCEVALINCLUDE pInstr = (PKMKCCEVALINCLUDE)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail,
+                                                                                  KMKCCEVALINCLUDE_SIZE(cWords));
+            pInstr->Core.enmOpcode = enmOpcode;
+            pInstr->Core.iLine     = pCompiler->iLine;
+            pInstr->cFiles         = cWords;
+            kmk_cc_eval_init_spp_array_from_duplicated_words(pCompiler, cWords, pCompiler->paWords, pInstr->aFiles);
+            kmk_cc_block_realign(pCompiler->ppBlockTail);
+        }
+        else
+            KMK_CC_ASSERT(0);
+    }
+    else
+        KMK_CC_EVAL_DPRINTF(("%s: include without args\n", g_apszEvalInstrNms[enmOpcode]));
+    return 1;
+}
+
+
+static int kmk_cc_eval_do_vpath(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft)
+{
+    kmk_cc_eval_fatal(pCompiler, NULL, "vpath directive is not implemented\n");
+    return 1;
+}
+
+
+/**
+ * Called when any previous recipe must have ended and can be finalized.
+ *
+ * This occurs when encountering an assignement, a new recipe or the end of the
+ * complication unit.
+ *
+ * @param   pCompiler   The compiler state.
+ */
+static void kmk_cc_eval_end_of_recipe(PKMKCCEVALCOMPILER pCompiler, const char *pchWord)
+{
+    if (pCompiler->pRecipe)
+    {
+        /** @todo do stuff here. */
+        kmk_cc_eval_fatal(pCompiler, pchWord, "end-of-recipe handling not implemented yet");
+    }
+}
+
+
+static void kmk_cc_eval_handle_command(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft)
+{
+    kmk_cc_eval_fatal(pCompiler, pchWord, "command handling not implemented yet");
+}
+
+
+/**
+ * Pick up the recipe parsing at the colon.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord0    The first word.
+ * @param   cchWord0    The length of the first word.
+ * @param   enmToken0   The classification of the first word.
+ * @param   pchColon    The colon.
+ * @param   cchLeft     How much is left, starting at the colon.
+ */
+static int kmk_cc_eval_handle_recipe_cont_colon(PKMKCCEVALCOMPILER pCompiler, const char *pchWord0, size_t cchWord0,
+                                                KMKCCEVALTOKEN enmToken0, const char *pchColon, size_t cchLeft)
+{
+    kmk_cc_eval_fatal(pCompiler, pchWord0, "recipe handling not implemented yet (#1)");
+    return 1;
+}
+
+
+/**
+ * Pick up the recipe parsing at the 2nd word (after it was determined not to be
+ * an assignment operator after all).
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord0    The first word.
+ * @param   cchWord0    The length of the first word.
+ * @param   pchWord     Where to continue parsing.
+ * @param   cchLeft     How much is left to parse.
+ */
+static int kmk_cc_eval_handle_recipe_cont_2nd_word(PKMKCCEVALCOMPILER pCompiler, const char *pchWord0, size_t cchWord0,
+                                                   const char *pchWord, size_t cchLeft)
+{
+//    const char *pchColon = memchr()
+
+    kmk_cc_eval_fatal(pCompiler, pchWord, "recipe handling not implemented yet (#2)");
+    return 1;
+}
+
+
+static void kmk_cc_eval_handle_recipe(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft)
+{
+    const char *pszColon = NULL;//memchr(pchWord, cchLeft);
+    if (pszColon)
+    {
+
+
+        kmk_cc_eval_fatal(pCompiler, pchWord, "recipe handling not implemented yet (#3)");
+    }
+    else if (pchWord[0] == '$')
+    {
+
+    }
+    else
+        kmk_cc_eval_fatal(pCompiler, pchWord,
+                          "Not variable assignment. Could be a complicated indirect recipe definition, however that's currently not supported.");
+
+}
+
+
+
+/**
+ * Common worker for handling export (non-assign), undefine and unexport.
+ *
+ * For instructions using the KMKCCEVALVARIABLES structure.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     First non-space chare after the keyword.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ * @param   fQualifiers The qualifiers.
+ */
+static int kmk_cc_eval_do_with_variable_list(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft,
+                                             KMKCCEVALINSTR enmOpcode, unsigned fQualifiers)
+{
+    if (cchLeft)
+    {
+        /*
+         * Parse the variable name list.  GNU make is using normal word
+         * handling here, so we can share code with the include directives.
+         */
+        unsigned cWords = kmk_cc_eval_parse_words(pCompiler, pchWord, cchLeft);
+#ifdef KMK_CC_EVAL_LOGGING_ENABLED
+        unsigned iWord;
+        KMK_CC_EVAL_DPRINTF(("%s: cWords=%d\n", g_apszEvalInstrNms[enmOpcode], cWords));
+        for (iWord = 0; iWord < cWords; iWord++)
+            KMK_CC_EVAL_DPRINTF(("  word[%u]: len=%#05x t=%d '%*.*s'\n", iWord, (int)pCompiler->paWords[iWord].cchWord,
+                                 (int)pCompiler->paWords[iWord].enmToken, (int)pCompiler->paWords[iWord].cchWord,
+                                 (int)pCompiler->paWords[iWord].cchWord, pCompiler->paWords[iWord].pchWord));
+#endif
+        if (cWords)
+        {
+            PKMKCCEVALVARIABLES pInstr = (PKMKCCEVALVARIABLES)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail,
+                                                                                      KMKCCEVALVARIABLES_SIZE(cWords));
+            pInstr->Core.enmOpcode = enmOpcode;
+            pInstr->Core.iLine     = pCompiler->iLine;
+            pInstr->cVars          = cWords;
+            kmk_cc_eval_init_spp_array_from_duplicated_words(pCompiler, cWords, pCompiler->paWords, pInstr->aVars);
+            kmk_cc_block_realign(pCompiler->ppBlockTail);
+        }
+        else
+            KMK_CC_ASSERT(0);
+    }
+    /* else: NOP */
+    return 1;
+}
+
+
+/**
+ * Parses a '[qualifiers] undefine variable [..]' expression.
+ *
+ * A 'undefine' directive is final, any qualifiers must preceed it.  So, we just
+ * have to extract the variable names now.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     First char after 'define'.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ * @param   fQualifiers The qualifiers.
+ */
+static int kmk_cc_eval_do_var_undefine(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft, unsigned fQualifiers)
+{
+    KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+    if (!cchLeft)
+        kmk_cc_eval_fatal(pCompiler, pchWord, "undefine requires a variable name");
+
+    /** @todo GNU make doesn't actually do the list thing for undefine, it seems
+     *        to assume everything after it is a single variable...  Going with
+     *        simple common code for now. */
+    return kmk_cc_eval_do_with_variable_list(pCompiler, pchWord, cchLeft, kKmkCcEvalInstr_undefine, fQualifiers);
+}
+
+
+/**
+ * Parses a '[qualifiers] unexport variable [..]' expression.
+ *
+ * A 'unexport' directive is final, any qualifiers must preceed it.  So, we just
+ * have to extract the variable names now.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     First char after 'define'.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ * @param   fQualifiers The qualifiers.
+ */
+static int kmk_cc_eval_do_var_unexport(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft, unsigned fQualifiers)
+{
+    PKMKCCEVALCORE pInstr;
+
+    /*
+     * Join paths with undefine and export, unless it's an unexport all directive.
+     */
+    KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+    if (cchLeft)
+        return kmk_cc_eval_do_with_variable_list(pCompiler, pchWord, cchLeft, kKmkCcEvalInstr_unexport, fQualifiers);
+
+    /*
+     * We're unexporting all variables.
+     */
+    pInstr = kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, sizeof(*pInstr));
+    pInstr->enmOpcode = kKmkCcEvalInstr_unexport_all;
+    pInstr->iLine     = pCompiler->iLine;
+    return 1;
+}
+
+
+/**
+ * Parse the value of a 'define' at pCompiler->offNext.
+ *
+ * This will update 'offNext' to the start of the line following the 'endef'
+ * matching the 'define' of the value.
+ *
+ * The value is prepared for kmk_cc_eval_strcpyv.
+ *
+ * @returns The value length that we've prepared for copying.
+ * @param   pCompiler           The compiler state.
+ * @param   pfPlainValue        Where to return whether this is a plain value or
+ *                              one needing expansion.
+ */
+static size_t kmk_cc_eval_parse_define_value(PKMKCCEVALCOMPILER pCompiler, int *pfPlainValue)
+{
+    /*
+     * Now we need to find the matching 'endef', we support nested ones.
+     *
+     * We look for the lines starting with 'endef' and 'define', like GNU
+     * make does even if we really should also be checking for variable
+     * qualifiers too.
+     *
+     * As we go on looking, we prepare the value in paStrCopySegs.
+     *
+     * Note! We duplicate code/logic from the top level compile loop here.
+     */
+    const char * const  pszContent   = pCompiler->pszContent;
+    size_t              cchContent   = pCompiler->cchContent;
+    int const           chFirstEol   = pCompiler->chFirstEol;
+    size_t const        cchEolSeq    = pCompiler->cchEolSeq;
+
+    unsigned            cNestings    = 1;
+    size_t              offNext      = pCompiler->offNext;
+    unsigned            iLine        = pCompiler->iLine;
+
+    unsigned            cSegs        = 0;
+    size_t              cchValue     = 0;
+    int                 fPlainValue  = 1;
+
+    for (;;)
+    {
+        /*
+         * Find end of line, preparing to copy it.
+         */
+        if (offNext < cchContent)
+        {
+            unsigned const  cSegsAtStartOfLine  = cSegs;
+            size_t const    cchValueStartOfLine = cchValue;
+            size_t          offFirstWord        = offNext;
+            const char     *pchLine             = &pszContent[offNext];
+            size_t          cchLine;
+            const char     *pchTmp;
+
+            pCompiler->cEscEols = 0;
+            pCompiler->iEscEol  = 0;
+
+            /* Add newline if necessary and make sure we've got a segment handy. */
+            KMK_CC_EVAL_ENSURE_STRCOPY_SEGS(pCompiler, cSegs + 2);
+            if (cSegs)
+            {
+                cchValue++;
+                pCompiler->paStrCopySegs[cSegs].cchSrcAndPrependSpace = 1;
+                pCompiler->paStrCopySegs[cSegs].pchSrc = "\n";
+                cSegs++;
+            }
+
+            /* Simple case: No escaped EOL, nor the end of the input. */
+            pchTmp = (const char *)memchr(&pszContent[offNext], chFirstEol, cchContent - offNext);
+            if (   pchTmp
+                && (   &pszContent[offNext] == pchTmp
+                    || pchTmp[-1] != '\\'))
+            {
+                if (   cchEolSeq == 1
+                    || pchTmp[1] == pCompiler->chSecondEol)
+                {
+                    offNext = pchTmp - pszContent;
+                    cchLine = pchTmp - pchLine;
+
+                    cchValue += cchLine;
+                    pCompiler->paStrCopySegs[cSegs].cchSrcAndPrependSpace = cchLine;
+                    pCompiler->paStrCopySegs[cSegs].pchSrc = pchLine;
+                    cSegs++;
+
+                    while (offFirstWord < offNext && KMK_CC_EVAL_IS_SPACE(pszContent[offFirstWord]))
+                        offFirstWord++;
+
+                    offNext += cchEolSeq;
+                }
+                else
+                    kmk_cc_eval_fatal_eol(pCompiler, pchTmp, iLine, offNext);
+            }
+            /* The complicated, less common cases. */
+            else
+            {
+                size_t fPendingSpace = 0;
+                for (;;)
+                {
+                    /* Find the first non-space char on this line.  We always need it. */
+                    size_t offThisFirstWord = offNext;
+                    size_t offEol = pchTmp ? pchTmp - pszContent : cchContent;
+                    if (offFirstWord == offNext)
+                    {
+                        while (offFirstWord < offEol && KMK_CC_EVAL_IS_SPACE(pszContent[offFirstWord]))
+                            offFirstWord++;
+                        if (pCompiler->cEscEols > 0)
+                            offThisFirstWord = offFirstWord;
+                    }
+                    else
+                        while (offThisFirstWord < offEol && KMK_CC_EVAL_IS_SPACE(pszContent[offThisFirstWord]))
+                            offThisFirstWord++;
+
+                    /* We normally need one, so just make sure once. */
+                    KMK_CC_EVAL_ENSURE_STRCOPY_SEGS(pCompiler, cSegs + 1);
+
+                    if (pchTmp)
+                    {
+                        if (   cchEolSeq == 1
+                            || pchTmp[1] == pCompiler->chSecondEol)
+                        {
+                            size_t const offThis = offNext;
+                            size_t offEsc;
+                            int fDone;
+                            offNext = pchTmp - pszContent;
+
+                            /* Is it an escape sequence? */
+                            if (   !offNext
+                                || pchTmp[-1] != '\\')
+                                fDone = 1;
+                            else if (offNext < 2 || pchTmp[-2] != '\\')
+                            {
+                                offEsc = offNext - 1;
+                                fDone = 0;
+                            }
+                            else
+                            {
+                                /* Count how many backslashes there are. Must be odd number to be an escape
+                                   sequence.  Normally we keep half of them, except for command lines.  */
+                                size_t cSlashes = 2;
+                                while (offNext >= cSlashes && pchTmp[0 - cSlashes] == '\\')
+                                    cSlashes--;
+                                fDone = !(cSlashes & 1);
+                                offEsc = offNext - (cSlashes >> 1);
+                            }
+
+                            /* Anything to copy? */
+/** @todo fixme tomorrow! */
+                            cchLine = offThisFirstWord - offNext;
+                            if (cchLine)
+                            {
+                                pCompiler->paStrCopySegs[cSegs].cchSrcAndPrependSpace = fPendingSpace
+                                                                                      ? -(ssize_t)cchLine : (ssize_t)cchLine;
+                                pCompiler->paStrCopySegs[cSegs].pchSrc = &pszContent[offThisFirstWord];
+                                cSegs++;
+                            }
+
+                            if (fDone)
+                            {
+                                cchLine = &pszContent[offNext] - pchLine;
+                                offNext += cchEolSeq;
+                                break;
+                            }
+
+                            /* Record it. */
+                            if (pCompiler->cEscEols < pCompiler->cEscEolsAllocated) { /* likely */ }
+                            else
+                            {
+                                KMK_CC_ASSERT(pCompiler->cEscEols == pCompiler->cEscEolsAllocated);
+                                pCompiler->cEscEolsAllocated = pCompiler->cEscEolsAllocated
+                                                             ? pCompiler->cEscEolsAllocated * 2 : 2;
+                                pCompiler->paEscEols = (PKMKCCEVALESCEOL)xrealloc(pCompiler->paEscEols,
+                                                                                    pCompiler->cEscEolsAllocated
+                                                                                  * sizeof(pCompiler->paEscEols[0]));
+                            }
+                            pCompiler->paEscEols[pCompiler->cEscEols].offEsc = offEsc;
+                            pCompiler->paEscEols[pCompiler->cEscEols].offEol = offNext;
+                            pCompiler->cEscEols++;
+
+                            /* Anything to copy? */
+                            cchLine = offThisFirstWord - offNext;
+                            if (cchLine)
+                            {
+                            }
+
+                            /* Advance. */
+                            offNext += cchEolSeq;
+                            if (offFirstWord == offEsc)
+                            {
+                                offFirstWord = offNext;
+                                pCompiler->iEscEol++;
+                            }
+                        }
+                        else
+                            kmk_cc_eval_fatal_eol(pCompiler, pchTmp, pCompiler->iLine, off);
+                    }
+                    else
+                    {
+                        /* End of input. Happens only once per compilation, nothing to optimize for. */
+
+                        if (offFirstWord == offNext)
+                            while (offFirstWord < cchContent && KMK_CC_EVAL_IS_SPACE(pszContent[offFirstWord]))
+                                offFirstWord++;
+
+                        KMK_CC_EVAL_ENSURE_STRCOPY_SEGS(pCompiler, cSegs + 2);
+                        if (cSegs == cSegsAtStartOfLine)
+                        {
+                            /* No escaped EOLs. */
+                            cchLine = &pszContent[cchContent] - pchLine;
+                            cchValue += cchLine;
+                            pCompiler->paStrCopySegs[cSegs].cchSrcAndPrependSpace = cchLine;
+                            pCompiler->paStrCopySegs[cSegs].pchSrc = pchLine;
+                            cSegs++;
+                        }
+                        else
+                        {
+                            if (offFirstWordThisLine < cchContent)
+                            {
+                                cchLine = cchContent - offFirstWordThisLine;
+                                cchValue += cchLine;
+                                pCompiler->paStrCopySegs[cSegs].cchSrcAndPrependSpace = fPendingSpace
+                                                                                      ? -(ssize_t)cchLine : (ssize_t)cchLine;
+                                pCompiler->paStrCopySegs[cSegs].pchSrc = &pszContent[offFirstWordThisLine];
+                                cSegs++;
+                            }
+                            cchLine = &pszContent[cchContent] - pchLine;
+                        }
+                        offNext = cchContent;
+                        break;
+                    }
+                    pchTmp = (const char *)memchr(&pszContent[offNext], chFirstEol, cchContent - offNext);
+                }
+            }
+            KMK_CC_ASSERT(offNext       <= cchContent);
+            KMK_CC_ASSERT(offNext       >= off + cchLine);
+            KMK_CC_ASSERT(off + cchLine <= cchContent && cchLine <= cchContent);
+            KMK_CC_ASSERT(offFirstWord  <= off + cchLine);
+            KMK_CC_ASSERT(offFirstWord  >= off);
+            KMK_CC_ASSERT(pszContent[offFirstWord] != ' ' && pszContent[offFirstWord] != '\t');
+
+            KMK_CC_EVAL_DPRINTF(("#%03u: %*.*s\n", pCompiler->iLine, (int)cchLine, (int)cchLine, &pszContent[off]));
+
+            /*
+             * Look for 'endef' and 'define' directives.
+             */
+            cchLine -= offFirstWord - off;
+            if (   cchLine >= 5 /* shortest word is 5 chars ('endef', 'local') */
+                && pchLine[0] != pCompiler->chCmdPrefix)
+            {
+                pchTmp = &pszContent[offFirstWord];
+                if (!KMK_CC_EVAL_IS_1ST_IN_VARIABLE_KEYWORD(*pchTmp))
+                { /* Kind of likely (and saves one indent). */ }
+                else if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchTmp, cchLine, "endef", 5))
+                {
+                    cNestings--;
+                    if (cNestings == 0)
+                    {
+                        cchValue = cchValueStartOfLine;
+                        cSegs    = cSegsAtStartOfLine;
+                        break;
+                    }
+                }
+                else
+                    for (;;)
+                    {
+                        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchTmp, cchLine, "define", 6))
+                        {
+                            cNestings++;
+                            break;
+                        }
+
+                        /* GNU make doesn't do this, but I think it makes sense. */
+                        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchTmp, cchLine, "local", 5))
+                        {
+                            pchTmp  += 5;
+                            cchLine -= 5;
+                        }
+                        else if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchTmp, cchLine, "export", 6))
+                        {
+                            pchTmp  += 6;
+                            cchLine -= 6;
+                        }
+                        else if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchTmp, cchLine, "private", 7))
+                        {
+                            pchTmp  += 7;
+                            cchLine -= 7;
+                        }
+                        else if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchTmp, cchLine, "override", 8))
+                        {
+                            pchTmp  += 8;
+                            cchLine -= 8;
+                        }
+                        else
+                            break;
+                        KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchTmp, cchLine);
+                    }
+            }
+
+            /*
+             * Advance to the next line.
+             */
+            iLine += pCompiler->cEscEols + 1;
+        }
+        else
+            kmk_cc_eval_fatal(pCompiler, NULL, )
+    }
+
+    /*
+     * Update globals and return values.
+     */
+    pCompiler->offNext      = offNext;
+    pCompiler->iLine        = iLine;
+    pCompiler->cStrCopySegs = cSegs;
+
+    *pfPlainValue = fPlainValue;
+    return cchValue;
+}
+
+/**
+ * Parses a 'define variable' expression.
+ *
+ * A 'define' directive is final, any qualifiers must preceed it.  So, we just
+ * have to extract the variable name now, well and find the corresponding
+ * 'endef'.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     First char after 'define'.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ * @param   fQualifiers The qualifiers.
+ */
+static int kmk_cc_eval_do_var_define(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft, unsigned fQualifiers)
+{
+    /*
+     * Now comes the variable name.  It may optionally be followed by an
+     * assignment operator to indicate what kind of variable is being defined.
+     */
+    KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+    unsigned cWords = cchLeft ? kmk_cc_eval_parse_words(pCompiler, pchWord, cchLeft) : 0;
+    if (cWords >= 1)
+    {
+        /*
+         * Check for variable assignment operator.  Kind of tedious...
+         */
+        KMKCCEVALINSTR  enmOpcode;
+        PKMKCCEVALWORD  pVarWord = pCompiler->paWords;
+        if (   cWords == 1
+            && (   pVarWord->cchWord == 0
+                || pVarWord->pchWord[pVarWord->cchWord - 1] != '='))
+            enmOpcode = kKmkCcEvalInstr_define_recursive; /* very likely */
+        else if (   pVarWord->cchWord > 0
+                 && pVarWord->pchWord[pVarWord->cchWord - 1] == '=')
+        {
+            if (pVarWord->cchWord == 1)
+                enmOpcode = kKmkCcEvalInstr_define_recursive;
+            else
+            {
+                char chPenultimate = pVarWord->pchWord[pVarWord->cchWord - 2];
+                if (chPenultimate == '?')
+                    enmOpcode = kKmkCcEvalInstr_define_if_new;
+                else if (chPenultimate == ':')
+                    enmOpcode = kKmkCcEvalInstr_assign_simple;
+                else if (chPenultimate == '+')
+                    enmOpcode = kKmkCcEvalInstr_assign_append;
+                else if (chPenultimate == '<')
+                    enmOpcode = kKmkCcEvalInstr_assign_prepend;
+                else
+                    enmOpcode = kKmkCcEvalInstr_define_recursive;
+            }
+            pVarWord->cchWord -= enmOpcode == kKmkCcEvalInstr_define_recursive ? 1 : 2;
+            if (cWords > 1)
+                kmk_cc_eval_fatal(pCompiler, pCompiler->paWords[1].pchWord,
+                                  "Bogus stuff after 'define' variable name and assignment operator");
+        }
+        else
+        {
+            PCKMKCCEVALWORD pOpWord = &pCompiler->paWords[1];
+            KMK_CC_ASSERT(cWords > 1);
+            if (   pOpWord->cchWord == 1
+                && pOpWord->pchWord[0] == '=')
+                enmOpcode = kKmkCcEvalInstr_define_recursive;
+            else if (   pOpWord->cchWord == 2
+                     && pOpWord->pchWord[1] == '=')
+            {
+                char chFirst = pVarWord->pchWord[0];
+                if (chFirst == '?')
+                    enmOpcode = kKmkCcEvalInstr_define_if_new;
+                else if (chFirst == ':')
+                    enmOpcode = kKmkCcEvalInstr_assign_simple;
+                else if (chFirst == '+')
+                    enmOpcode = kKmkCcEvalInstr_assign_append;
+                else if (chFirst == '<')
+                    enmOpcode = kKmkCcEvalInstr_assign_prepend;
+                else
+                    kmk_cc_eval_fatal(pCompiler, pOpWord->pchWord, "Bogus stuff after 'define' variable name");
+            }
+            else
+                kmk_cc_eval_fatal(pCompiler, pOpWord->pchWord, "Bogus stuff after 'define' variable name");
+            if (cWords > 2)
+                kmk_cc_eval_fatal(pCompiler, pCompiler->paWords[2].pchWord,
+                                  "Bogus stuff after 'define' variable name and assignment operator");
+        }
+
+        /*
+         * The variable name must not be empty.
+         */
+        if (pVarWord->cchWord)
+        {
+            int const           fPlainVarNm = pVarWord->enmToken == kKmkCcEvalToken_WordPlain;
+            const char *        pchVarNm    = pVarWord->pchWord;
+            size_t              cchVarNm    = pVarWord->cchWord;
+            PKMKCCEVALASSIGN    pInstr;
+            size_t              cchValue;
+            const char         *pszValue;
+            int                 fPlainValue;
+
+            if (   enmOpcode == kKmkCcEvalInstr_define_recursive
+                || enmOpcode == kKmkCcEvalInstr_define_if_new)
+            {
+                PKMKCCEVALASSIGNDEF pInstrDef;
+                pInstrDef = (PKMKCCEVALASSIGNDEF)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, sizeof(*pInstrDef));
+                pInstr = &pInstrDef->AssignCore;
+                pInstrDef->pEvalProg = NULL; /** @todo consider this later at some point, need some trial and error approach. */
+            }
+            else
+                pInstr = (PKMKCCEVALASSIGN)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, sizeof(*pInstr));
+
+            pInstr->Core.enmOpcode = enmOpcode;
+            pInstr->Core.iLine     = pCompiler->iLine;
+            pInstr->fExport        = (fQualifiers & KMK_CC_EVAL_QUALIFIER_EXPORT)   != 0;
+            pInstr->fOverride      = (fQualifiers & KMK_CC_EVAL_QUALIFIER_OVERRIDE) != 0;
+            pInstr->fPrivate       = (fQualifiers & KMK_CC_EVAL_QUALIFIER_PRIVATE)  != 0;
+            pInstr->fLocal         = (fQualifiers & KMK_CC_EVAL_QUALIFIER_LOCAL)    != 0;
+
+            cchValue = kmk_cc_eval_parse_define_value(pCompiler, &fPlainValue);
+            pszValue = kmk_cc_eval_strdup_prepped(pCompiler, cchValue);
+            if (fPlainVarNm)
+                pchVarNm = strcache2_add(&variable_strcache, pchVarNm, cchVarNm);
+            else
+            {
+/** @todo fix work copying. */
+//                pCompiler->iEscEol = iEscEolVarNm;
+                cchVarNm = kmk_cc_eval_prep_normal_line_ex(pCompiler, pchVarNm, cchVarNm);
+                pchVarNm = kmk_cc_eval_strdup_prepped(pCompiler, cchVarNm);
+            }
+            kmk_cc_block_realign(pCompiler->ppBlockTail);
+            KMK_CC_EVAL_DPRINTF(("%s: define '%s'\n%s\nendef\n", g_apszEvalInstrNms[enmOpcode], pchVarNm, pszValue));
+
+            kmk_cc_eval_init_subprogram_or_plain(pCompiler, &pInstr->Variable, pchVarNm, cchVarNm, fPlainVarNm);
+            kmk_cc_eval_init_subprogram_or_plain(pCompiler, &pInstr->Value, pszValue, cchValue, fPlainValue);
+
+            pInstr->pNext = (PKMKCCEVALCORE)kmk_cc_block_get_next_ptr(*pCompiler->ppBlockTail);
+        }
+        else
+            kmk_cc_eval_fatal(pCompiler, pchWord, "Empty variable name after 'define'");
+    }
+    else
+        kmk_cc_eval_fatal(pCompiler, pchWord, "Expected variable name after 'define'");
+    return 1;
+}
+
+
+/**
+ * Emits a 'expand(-and-eval)' instruction.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchSubprog  The subprogram that needs expanding.
+ * @param   cchSubprog  The length of the subprogram.
+ * @param   iEscEol     The escaped EOL index corresponding to pchSubprog.
+ */
+static int kmk_cc_eval_emit_expand(PKMKCCEVALCOMPILER pCompiler, const char *pchSubprog, size_t cchSubprog, unsigned iEscEolVarNm)
+{
+    /*
+     * We're unexporting all variables.
+     */
+    size_t           cchCopy;
+    char            *pszCopy;
+    PKMKCCEVALEXPAND pInstr;
+
+    pCompiler->iEscEol = iEscEolVarNm;
+    cchCopy = kmk_cc_eval_prep_normal_line_ex(pCompiler, pchSubprog, cchSubprog);
+    pszCopy = kmk_cc_eval_strdup_prepped(pCompiler, cchCopy);
+    kmk_cc_block_realign(pCompiler->ppBlockTail);
+
+    pInstr = (PKMKCCEVALEXPAND)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, sizeof(*pInstr));
+    pInstr->Core.enmOpcode = kKmkCcEvalInstr_expand;
+    pInstr->Core.iLine     = pCompiler->iLine;
+    pInstr->uPadding       = 0;
+    /** @todo Make the subprogram embed necessary strings. */
+    kmk_cc_eval_compile_string_exp_subprog(pCompiler, pszCopy, cchCopy, &pInstr->Subprog);
+
+    return 1;
+}
+
+
+static int kmk_cc_eval_handle_assignment_or_recipe(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft,
+                                                   unsigned fQualifiers)
+{
+    /*
+     * We're currently at a word which may or may not be a variable name
+     * followed by an assignment operator, alternatively it must be a recipe.
+     * We need to figure this out and deal with it in the most efficient
+     * manner as this is a very common occurence.
+     */
+    unsigned const  iEscEolVarNm = pCompiler->iEscEol;
+    int             fPlainVarNm  = 1;
+    const char     *pchVarNm     = pchWord;
+    size_t          cchVarNm;
+    size_t          cch = 0;
+    size_t          cchSubprog = 0;
+    char            ch;
+
+    /*
+     * The variable name.  Complicate by there being no requirement of a space
+     * preceeding the assignment operator, as well as that the variable name
+     * may include variable references with spaces (function++) in them.
+     */
+    for (;;)
+    {
+        if (cch < cchLeft)
+        { /*likely*/ }
+        else
+        {
+            /* Single word, join paths with word + whitespace. */
+            KMK_CC_ASSERT(cch == cchLeft);
+            cchVarNm = cch;
+            pchWord += cch;
+            cchLeft -= cch;
+            break;
+        }
+
+        ch = pchWord[cch];
+        if (!KMK_CC_EVAL_IS_SPACE_DOLLAR_SLASH_OR_ASSIGN(ch))
+            cch++;
+        /* Space? */
+        else if (KMK_CC_EVAL_IS_SPACE(ch))
+        {
+            cchVarNm = cch;
+            pchWord += cch;
+            cchLeft -= cch;
+            KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+            break;
+        }
+        /* Variable expansion may contain spaces, so handle specially. */
+        else if (ch == '$')
+        {
+            size_t const offStart = cch;
+            cch = kmk_cc_eval_parse_var_exp(pCompiler, pchWord, cchLeft, cch);
+            cchSubprog += cch - offStart;
+            fPlainVarNm = 0;
+        }
+        /* Check out potential recipe, simple assignment or DOS drive letter separator. */
+        else if (ch == ':')
+        {
+            if (   cch + 1 < cchLeft
+                && pchWord[cch + 1] != '=')
+            {
+                cchVarNm = cch;
+                pchWord += cch;
+                cchLeft -= cch;
+                break;
+            }
+#ifdef HAVE_DOS_PATHS
+            /* Don't confuse the first colon in:
+                    C:/Windows/System32/Kernel32.dll: C:/Windows/System32/NtDll.dll
+               for a recipe, it is only the second one which counts. */
+            if (   cch == 1
+                && isalpha((unsigned char)pchWord[0]))
+                cch++;
+            else
+#endif
+            if (!fQualifiers)
+                return kmk_cc_eval_handle_recipe_cont_colon(pCompiler, pchWord, cch,
+                                                            fPlainVarNm
+                                                            ? kKmkCcEvalToken_WordPlain : kKmkCcEvalToken_WordWithDollar,
+                                                            pchWord + cch, cchLeft - cch);
+            /** @todo we may have words already preparsed here so restarting is easy...  */
+            return 0; /* retry with preceeding keywords */
+        }
+        /* Check out assignment operator. */
+        else if (ch == '=')
+        {
+            if (cch > 0)
+            {
+                char chPrev = pchWord[cch - 1];
+                if (chPrev == ':' || chPrev == '+' || chPrev == '?' || chPrev == '<')
+                    cch--;
+                cchVarNm = cch;
+                pchWord += cch;
+                cchLeft -= cch;
+                break;
+            }
+            kmk_cc_eval_fatal(pCompiler, pchWord, "Empty variable name.");
+        }
+        /* Check out potential escaped EOL sequence. */
+        else if (ch == '\\')
+        {
+            unsigned const iEscEol = pCompiler->iEscEol;
+            if (iEscEol >= pCompiler->cEscEols)
+                cch++;
+            else
+            {
+                size_t offCur = &pchWord[cch] - pCompiler->pszContent;
+                if (offCur < pCompiler->paEscEols[iEscEol].offEol)
+                    cch++;
+                else
+                {
+                    cchVarNm = cch;
+                    KMK_CC_ASSERT(offCur == pCompiler->paEscEols[iEscEol].offEol);
+                    cch = pCompiler->paEscEols[iEscEol].offEol + pCompiler->cchEolSeq - offCur;
+                    pCompiler->iEscEol = iEscEol + 1;
+                    pchWord += cch;
+                    cchLeft -= cch;
+                    KMK_CC_EVAL_SKIP_SPACES(pCompiler, pchWord, cchLeft);
+                    break;
+                }
+            }
+        }
+        else
+            KMK_CC_ASSERT(0);
+    }
+
+    /*
+     * Check for assignment operator.
+     */
+    if (cchLeft)
+    {
+        size_t              cchValue;
+        PKMKCCEVALASSIGN    pInstr;
+        KMKCCEVALINSTR      enmOpcode;
+        int                 fPlainValue;
+        char               *pszValue;
+
+        ch = *pchWord;
+        if (ch == '=')
+        {
+            enmOpcode = kKmkCcEvalInstr_assign_recursive;
+            pchWord++;
+            cchLeft--;
+        }
+        else if (cchLeft >= 2 && pchWord[1] == '=')
+        {
+            if (ch == ':')
+                enmOpcode = kKmkCcEvalInstr_assign_simple;
+            else if (ch == '+')
+                enmOpcode = kKmkCcEvalInstr_assign_append;
+            else if (ch == '<')
+                enmOpcode = kKmkCcEvalInstr_assign_prepend;
+            else if (ch == '?')
+                enmOpcode = kKmkCcEvalInstr_assign_if_new;
+            else if (!fQualifiers)
+                return kmk_cc_eval_handle_recipe_cont_2nd_word(pCompiler, pchVarNm, cchVarNm, pchWord, cchLeft);
+            else
+                return 0; /* retry without preceding keywords */
+            pchWord += 2;
+            cchLeft -= 2;
+        }
+        else if (!fQualifiers)
+            return kmk_cc_eval_handle_recipe_cont_2nd_word(pCompiler, pchVarNm, cchVarNm, pchWord, cchLeft);
+        else
+            return 0; /* retry without preceding keywords */
+
+        /*
+         * Skip leading spaces, if any and prep the value for copying.
+         */
+        KMK_CC_EVAL_SKIP_SPACES(pCompiler, pchWord, cchLeft);
+        cchValue    = kmk_cc_eval_prep_normal_line(pCompiler, pchWord, cchLeft);
+        fPlainValue = memchr(pchWord, '$', cchLeft) == NULL;
+
+        /*
+         * Emit the instruction.
+         */
+        kmk_cc_eval_end_of_recipe(pCompiler, pchWord);
+
+        pInstr = (PKMKCCEVALASSIGN)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, sizeof(*pInstr));
+        pInstr->Core.enmOpcode = enmOpcode;
+        pInstr->Core.iLine     = pCompiler->iLine;
+        pInstr->fExport        = (fQualifiers & KMK_CC_EVAL_QUALIFIER_EXPORT)   != 0;
+        pInstr->fOverride      = (fQualifiers & KMK_CC_EVAL_QUALIFIER_OVERRIDE) != 0;
+        pInstr->fPrivate       = (fQualifiers & KMK_CC_EVAL_QUALIFIER_PRIVATE)  != 0;
+        pInstr->fLocal         = (fQualifiers & KMK_CC_EVAL_QUALIFIER_LOCAL)    != 0;
+
+        /* We copy the value before messing around with the variable name since
+           we have to do more iEolEsc saves & restores the other way around. */
+        pszValue = kmk_cc_eval_strdup_prepped(pCompiler, cchValue);
+        if (fPlainVarNm)
+            pchVarNm = strcache2_add(&variable_strcache, pchVarNm, cchVarNm);
+        else
+        {
+            pCompiler->iEscEol = iEscEolVarNm;
+            cchVarNm = kmk_cc_eval_prep_normal_line_ex(pCompiler, pchVarNm, cchVarNm);
+            pchVarNm = kmk_cc_eval_strdup_prepped(pCompiler, cchVarNm);
+        }
+        kmk_cc_block_realign(pCompiler->ppBlockTail);
+        KMK_CC_EVAL_DPRINTF(("%s: '%s' '%s'\n", g_apszEvalInstrNms[enmOpcode], pchVarNm, pszValue));
+
+        kmk_cc_eval_init_subprogram_or_plain(pCompiler, &pInstr->Variable, pchVarNm, cchVarNm, fPlainVarNm);
+        kmk_cc_eval_init_subprogram_or_plain(pCompiler, &pInstr->Value, pszValue, cchValue, fPlainValue);
+
+        pInstr->pNext = (PKMKCCEVALCORE)kmk_cc_block_get_next_ptr(*pCompiler->ppBlockTail);
+    }
+    /*
+     * This could be one or more function calls.
+     */
+    else if (!fPlainVarNm && cchVarNm == cchSubprog && fQualifiers == 0)
+        return kmk_cc_eval_emit_expand(pCompiler, pchVarNm, cchVarNm, iEscEolVarNm);
+    else if (!fPlainVarNm)
+        kmk_cc_eval_fatal(pCompiler, pchWord,
+                          "Not variable assignment. Could be a complicated indirect recipe definition, however that's currently not supported.");
+    else
+        kmk_cc_eval_fatal(pCompiler, pchWord, "Neither recipe nor variable assignment");
+    return 1;
+}
+
+
+/**
+ * Parses a 'local [override] variable = value', 'local define variable', and
+ * 'local undefine variable [...]' expressions.
+ *
+ * The 'local' directive must be first and it does not permit any qualifiers at
+ * the moment.  Should any be added later, they will have to come after 'local'.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     First char after 'local'.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ * @param   fQualifiers The qualifiers.
+ */
+static int kmk_cc_eval_do_var_local(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft)
+{
+    KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+    if (cchLeft)
+    {
+        /*
+         * Check for 'local define' and 'local undefine'
+         */
+        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "define", 6))   /* final */
+            return kmk_cc_eval_do_var_define(pCompiler, pchWord + 6, cchLeft + 6, KMK_CC_EVAL_QUALIFIER_LOCAL);
+        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "undefine", 8))   /* final */
+            return kmk_cc_eval_do_var_undefine(pCompiler, pchWord + 8, cchLeft + 8, KMK_CC_EVAL_QUALIFIER_LOCAL);
+
+        /*
+         * Simpler to just join paths with the rest here, even if we could
+         * probably optimize the parsing a little if we liked.
+         */
+        return kmk_cc_eval_handle_assignment_or_recipe(pCompiler, pchWord, cchLeft, KMK_CC_EVAL_QUALIFIER_LOCAL);
+    }
+    kmk_cc_eval_fatal(pCompiler, pchWord, "Expected variable name, assignment operator and value after 'local'");
+    return 1;
+}
+
+
+/**
+ * We've found one variable qualification keyword, now continue parsing and see
+ * if this is some kind of variable assignment expression or not.
+ *
+ * @returns 1 if variable assignment, 0 if not.
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     First char after the first qualifier.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ * @param   fQualifiers The qualifier.
+ */
+static int kmk_cc_eval_try_handle_var_with_keywords(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft,
+                                                    unsigned fQualifiers)
+{
+    for (;;)
+    {
+        KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+        if (cchLeft)
+        {
+            char ch = *pchWord;
+            if (KMK_CC_EVAL_IS_1ST_IN_VARIABLE_KEYWORD(ch))
+            {
+                if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "define", 6))   /* final */
+                    return kmk_cc_eval_do_var_define(pCompiler, pchWord + 6, cchLeft - 6, fQualifiers);
+
+                if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "undefine", 8)) /* final */
+                    return kmk_cc_eval_do_var_undefine(pCompiler, pchWord + 8, cchLeft -86, fQualifiers);
+
+                if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "unexport", 8)) /* final */
+                    return kmk_cc_eval_do_var_unexport(pCompiler, pchWord + 8, cchLeft - 8, fQualifiers);
+
+                if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "export", 6))
+                {
+                    if (!(fQualifiers & KMK_CC_EVAL_QUALIFIER_EXPORT))
+                        fQualifiers |= KMK_CC_EVAL_QUALIFIER_EXPORT;
+                    else
+                        kmk_cc_eval_warn(pCompiler, pchWord, "'export' qualifier repeated");
+                    pchWord += 6;
+                    cchLeft -= 6;
+                    continue;
+                }
+
+                if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "override", 8))
+                {
+                    if (!(fQualifiers & KMK_CC_EVAL_QUALIFIER_OVERRIDE))
+                        fQualifiers |= KMK_CC_EVAL_QUALIFIER_OVERRIDE;
+                    else
+                        kmk_cc_eval_warn(pCompiler, pchWord, "'override' qualifier repeated");
+                    pchWord += 8;
+                    cchLeft -= 8;
+                    continue;
+                }
+
+                if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "private", 7))
+                {
+                    if (!(fQualifiers & KMK_CC_EVAL_QUALIFIER_PRIVATE))
+                        fQualifiers |= KMK_CC_EVAL_QUALIFIER_PRIVATE;
+                    else
+                        kmk_cc_eval_warn(pCompiler, pchWord, "'private' qualifier repeated");
+                    pchWord += 7;
+                    cchLeft -= 7;
+                    continue;
+                }
+            }
+
+            /*
+             * Not a keyword, likely variable name followed by an assignment
+             * operator and a value.  Do a rough check for the assignment operator
+             * and join paths with the unqualified assignment handling code.
+             */
+            {
+                const char *pchEqual = (const char *)memchr(pchWord, '=', cchLeft);
+                if (pchEqual)
+                    return kmk_cc_eval_handle_assignment_or_recipe(pCompiler, pchWord, cchLeft, fQualifiers);
+            }
+            return 0;
+        }
+        else
+            kmk_cc_eval_fatal(pCompiler, NULL,
+                              "Expected assignment operator or variable directive after variable qualifier(s)\n");
+    }
+}
+
+
+/**
+ * Parses 'export [variable]' and 'export [qualifiers] variable = value'
+ * expressions.
+ *
+ * When we find the 'export' directive at the start of a line, we need to
+ * continue parsing with till we can tell the difference between the two forms.
+ *
+ * @returns 1 to indicate we've handled a keyword (see
+ *          kmk_cc_eval_try_handle_keyword).
+ * @param   pCompiler   The compiler state.
+ * @param   pchWord     First char after 'define'.
+ * @param   cchLeft     The number of chars left to parse on this line.
+ */
+static int kmk_cc_eval_handle_var_export(PKMKCCEVALCOMPILER pCompiler, const char *pchWord, size_t cchLeft)
+{
+    KMK_CC_EVAL_SKIP_SPACES_AFTER_WORD(pCompiler, pchWord, cchLeft);
+
+    if (cchLeft)
+    {
+        unsigned iSavedEscEol;
+        unsigned cWords;
+
+        /*
+         * We need to figure out whether this is an assignment or a export statement,
+         * in the latter case join paths with 'export' and 'undefine'.
+         */
+        const char *pchEqual = (const char *)memchr(pchWord, '=', cchLeft);
+        if (!pchEqual)
+            return kmk_cc_eval_do_with_variable_list(pCompiler, pchWord, cchLeft, kKmkCcEvalInstr_export, 0 /*fQualifiers*/);
+
+        /*
+         * Found an '=', could be an assignment.  Let's take the easy way out
+         * and just parse the whole statement into words like we would do if
+         * it wasn't an assignment, and then check the words out for
+         * assignment keywords and operators.
+         */
+        iSavedEscEol = pCompiler->iEscEol;
+        cWords       = kmk_cc_eval_parse_words(pCompiler, pchWord, cchLeft);
+        if (cWords)
+        {
+            PKMKCCEVALVARIABLES pInstr;
+            PKMKCCEVALWORD pWord = pCompiler->paWords;
+            unsigned       iWord = 0;
+            while (iWord < cWords)
+            {
+                /* Trailing assignment operator or terminal assignment directive ('undefine'
+                   and 'unexport' makes no sense here but GNU make ignores that). */
+                if (   (   pWord->cchWord > 1
+                        && pWord->pchWord[pWord->cchWord - 1] == '=')
+                    || KMK_CC_STRCMP_CONST(pWord->pchWord, pWord->cchWord, "define", 6)
+                    || KMK_CC_STRCMP_CONST(pWord->pchWord, pWord->cchWord, "undefine", 8)
+                    || KMK_CC_STRCMP_CONST(pWord->pchWord, pWord->cchWord, "unexport", 8) )
+                {
+                    pCompiler->iEscEol = iSavedEscEol;
+                    return kmk_cc_eval_try_handle_var_with_keywords(pCompiler, pchWord, cchLeft, KMK_CC_EVAL_QUALIFIER_EXPORT);
+                }
+
+                /* If not a variable assignment qualifier, it must be a variable name
+                   followed by an assignment operator. */
+                if (iWord + 1 < cWords)
+                {
+                    if (   !KMK_CC_STRCMP_CONST(pWord->pchWord, pWord->cchWord, "export", 6)
+                        && !KMK_CC_STRCMP_CONST(pWord->pchWord, pWord->cchWord, "private", 7)
+                        && !KMK_CC_STRCMP_CONST(pWord->pchWord, pWord->cchWord, "override", 8))
+                    {
+                        pWord++;
+                        if (   pWord->cchWord > 0
+                            && (   pWord->pchWord[0] == '='
+                                || (   pWord->cchWord > 1
+                                    && pWord->pchWord[1] == '='
+                                    && (   pWord->pchWord[0] == ':'
+                                        || pWord->pchWord[0] == '+'
+                                        || pWord->pchWord[0] == '?'
+                                        || pWord->pchWord[0] == '<') ) ) )
+                        {
+                            pCompiler->iEscEol = iSavedEscEol;
+                            return kmk_cc_eval_try_handle_var_with_keywords(pCompiler, pchWord, cchLeft,
+                                                                            KMK_CC_EVAL_QUALIFIER_EXPORT);
+                        }
+                        break;
+                    }
+                }
+                else
+                    break;
+                /* next */
+                pWord++;
+                iWord++;
+            }
+
+            /*
+             * It's not an assignment.
+             * (This is the same as kmk_cc_eval_do_with_variable_list does.)
+             */
+            pInstr = (PKMKCCEVALVARIABLES)kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, KMKCCEVALVARIABLES_SIZE(cWords));
+            pInstr->Core.enmOpcode = kKmkCcEvalInstr_export;
+            pInstr->Core.iLine     = pCompiler->iLine;
+            pInstr->cVars          = cWords;
+            kmk_cc_eval_init_spp_array_from_duplicated_words(pCompiler, cWords, pCompiler->paWords, pInstr->aVars);
+            kmk_cc_block_realign(pCompiler->ppBlockTail);
+        }
+        else
+            KMK_CC_ASSERT(0);
+    }
+    else
+    {
+        /*
+         * We're exporting all variables.
+         */
+        PKMKCCEVALCORE pInstr = kmk_cc_block_alloc_eval(pCompiler->ppBlockTail, sizeof(*pInstr));
+        pInstr->enmOpcode = kKmkCcEvalInstr_export_all;
+        pInstr->iLine     = pCompiler->iLine;
+    }
+    return 1;
+}
+
+
+/**
+ * When entering this function we know that the first two character in the first
+ * word both independently occurs in keywords.
+ *
+ * @returns 1 if make directive or qualified variable assignment, 0 if neither.
+ * @param   pCompiler   The compiler state.
+ * @param   ch          The first char.
+ * @param   pchWord     Pointer to the first word.
+ * @param   cchLeft     Number of characters left to parse starting at
+ *                      @a cchLeft.
+ */
+int kmk_cc_eval_try_handle_keyword(PKMKCCEVALCOMPILER pCompiler, char ch, const char *pchWord, size_t cchLeft)
+{
+    unsigned iSavedEscEol = pCompiler->iEscEol;
+
+    KMK_CC_ASSERT(cchLeft >= 2);
+    KMK_CC_ASSERT(ch == pchWord[0]);
+    KMK_CC_ASSERT(KMK_CC_EVAL_IS_1ST_IN_KEYWORD(pchWord[0]));
+    KMK_CC_ASSERT(KMK_CC_EVAL_IS_2ND_IN_KEYWORD(pchWord[1]));
+
+    /*
+     * If it's potentially a variable related keyword, check that out first.
+     */
+    if (KMK_CC_EVAL_IS_1ST_IN_VARIABLE_KEYWORD(ch))
+    {
+        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "local", 5))
+            return kmk_cc_eval_do_var_local(pCompiler, pchWord + 5, cchLeft - 5);
+        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "define", 6))
+            return kmk_cc_eval_do_var_define(pCompiler, pchWord + 6, cchLeft - 6, 0);
+        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "export", 6))
+            return kmk_cc_eval_handle_var_export(pCompiler, pchWord + 6, cchLeft - 6);
+        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "undefine", 8))
+            return kmk_cc_eval_do_var_undefine(pCompiler, pchWord + 8, cchLeft - 8, 0);
+        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "unexport", 8))
+            return kmk_cc_eval_do_var_unexport(pCompiler, pchWord + 8, cchLeft - 8, 0);
+        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "override", 8))
+        {
+            if (kmk_cc_eval_try_handle_var_with_keywords(pCompiler, pchWord + 8, cchLeft - 8, KMK_CC_EVAL_QUALIFIER_OVERRIDE))
+                return 1;
+            pCompiler->iEscEol = iSavedEscEol;
+        }
+        else if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "private", 7))
+        {
+            if (kmk_cc_eval_try_handle_var_with_keywords(pCompiler, pchWord + 7, cchLeft - 7, KMK_CC_EVAL_QUALIFIER_PRIVATE))
+                return 1;
+            pCompiler->iEscEol = iSavedEscEol;
+        }
+    }
+
+    /*
+     * Check out the other keywords.
+     */
+    if (ch == 'i') /* Lots of directives starting with 'i'. */
+    {
+        char ch2 = pchWord[1];
+        pchWord += 2;
+        cchLeft -= 2;
+
+        /* 'if...' */
+        if (ch2 == 'f')
+        {
+            if (KMK_CC_EVAL_WORD_COMP_IS_EOL(pCompiler, pchWord, cchLeft))
+                return kmk_cc_eval_do_if(pCompiler, pchWord, cchLeft, 0 /* in else */);
+
+            if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "eq", 2))
+                return kmk_cc_eval_do_ifeq( pCompiler, pchWord + 2, cchLeft - 2, 0 /* in else */, 1 /* positive */);
+
+            if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "def", 3))
+                return kmk_cc_eval_do_ifdef(pCompiler, pchWord + 3, cchLeft - 3, 0 /* in else */, 1 /* positive */);
+
+            if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "neq", 3))
+                return kmk_cc_eval_do_ifeq( pCompiler, pchWord + 3, cchLeft - 3, 0 /* in else */, 0 /* positive */);
+
+            if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "1of", 3))
+                return kmk_cc_eval_do_if1of(pCompiler, pchWord + 3, cchLeft - 3, 0 /* in else */, 1 /* positive */);
+
+            if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "ndef", 4))
+                return kmk_cc_eval_do_ifdef(pCompiler, pchWord + 4, cchLeft - 4, 0 /* in else */, 0 /* positive */);
+
+            if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "n1of", 4))
+                return kmk_cc_eval_do_if1of(pCompiler, pchWord + 4, cchLeft - 4, 0 /* in else */, 0 /* positive */);
+        }
+        /* include... */
+        else if (ch2 == 'n' && cchLeft >= 5 && KMK_CC_WORD_COMP_CONST_5(pchWord, "clude") ) /* 'in...' */
+        {
+            pchWord += 5;
+            cchLeft -= 5;
+            if (KMK_CC_EVAL_WORD_COMP_IS_EOL(pCompiler, pchWord, cchLeft))
+                return kmk_cc_eval_do_include(pCompiler, pchWord, cchLeft, kKmkCcEvalInstr_include);
+            if (cchLeft >= 3 && KMK_CC_WORD_COMP_CONST_3(pchWord, "dep"))
+            {
+                pchWord += 3;
+                cchLeft -= 3;
+                if (KMK_CC_EVAL_WORD_COMP_IS_EOL(pCompiler, pchWord, cchLeft))
+                    return kmk_cc_eval_do_include(pCompiler, pchWord, cchLeft, kKmkCcEvalInstr_includedep);
+                if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "-queue", 6))
+                    return kmk_cc_eval_do_include(pCompiler, pchWord + 6, cchLeft - 6, kKmkCcEvalInstr_includedep_queue);
+                if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "-flush", 6))
+                    return kmk_cc_eval_do_include(pCompiler, pchWord + 6, cchLeft - 6, kKmkCcEvalInstr_includedep_flush);
+            }
+        }
+    }
+    else if (ch == 'e') /* A few directives starts with 'e'. */
+    {
+        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "else", 4))
+            return kmk_cc_eval_do_else(pCompiler, pchWord + 4, cchLeft - 4);
+        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "endif", 5))
+            return kmk_cc_eval_do_endif(pCompiler, pchWord + 5, cchLeft - 5);
+        /* export and endef are handled elsewhere, though stray endef's may end up here... */
+        KMK_CC_ASSERT(!KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "export", 6));
+
+    }
+    else /* the rest. */
+    {
+        if (   KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "sinclude", 8)
+            || KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "-include", 8))
+            return kmk_cc_eval_do_include(pCompiler, pchWord + 8, cchLeft - 8, kKmkCcEvalInstr_include_silent);
+        if (KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "vpath", 5))
+            return kmk_cc_eval_do_vpath(pCompiler, pchWord + 5, cchLeft - 5);
+
+        KMK_CC_ASSERT(!KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "local", 5));
+        KMK_CC_ASSERT(!KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "define", 6));
+        KMK_CC_ASSERT(!KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "private", 7));
+        KMK_CC_ASSERT(!KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "override", 8));
+        KMK_CC_ASSERT(!KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "unexport", 8));
+        KMK_CC_ASSERT(!KMK_CC_EVAL_WORD_COMP_CONST(pCompiler, pchWord, cchLeft, "undefine", 8));
+    }
+
+    pCompiler->iEscEol = iSavedEscEol;
+    return 0;
+}
+
+
+
+
+static int kmk_cc_eval_compile_worker(PKMKCCEVALPROG pEvalProg, const char *pszContent, size_t cchContent, unsigned iLine)
+{
+    const char *pchTmp;
+
+    /*
+     * Compiler state.
+     */
+    KMKCCEVALCOMPILER   Compiler;
+    kmk_cc_eval_init_compiler(&Compiler, pEvalProg, iLine, pszContent, cchContent);
+    KMK_CC_EVAL_DPRINTF(("\nkmk_cc_eval_compile_worker - begin (%s/%s/%d)\n", pEvalProg->pszFilename, pEvalProg->pszVarName, iLine));
+
+    {
+        /*
+         * Line state.
+         */
+        size_t              cchLine;                                /* The length of the current line (w/o comments). */
+        size_t              offNext = 0;                            /* The offset of the next line. */
+        size_t              off     = 0;                            /* The offset into pszContent of the current line. */
+
+        /* Try for some register/whatever optimzations. */
+        int const           chFirstEol = Compiler.chFirstEol;
+        size_t const        cchEolSeq  = Compiler.cchEolSeq;
+
+        /*
+         * Process input lines.
+         *
+         * The code here concerns itself with getting the next line in an efficient
+         * manner, very basic classification and trying out corresponding handlers.
+         * The real work is done in the handlers.
+         */
+        while (offNext < cchContent)
+        {
+            size_t offFirstWord;
+
+            /*
+             * Find the end of the next line.
+             */
+            KMK_CC_ASSERT(off == offNext);
+
+            /* Simple case: No escaped EOL, nor the end of the input. */
+            pchTmp = (const char *)memchr(&pszContent[offNext], chFirstEol, cchContent - offNext);
+            if (   pchTmp
+                && (   &pszContent[offNext] == pchTmp
+                    || pchTmp[-1] != '\\') )
+            {
+                if (   cchEolSeq == 1
+                    || pchTmp[1] == Compiler.chSecondEol)
+                {
+                    /* Frequent: Blank line. */
+                    if (&pszContent[offNext] == pchTmp)
+                    {
+                        KMK_CC_EVAL_DPRINTF(("#%03u: <empty>\n", Compiler.iLine));
+                        Compiler.iLine++;
+                        off = offNext += cchEolSeq;
+                        continue;
+                    }
+                    if (pszContent[offNext] == '#')
+                    {
+                        KMK_CC_EVAL_DPRINTF(("#%03u: <comment-col-0>\n", Compiler.iLine));
+                        Compiler.iLine++;
+                        offNext = pchTmp - pszContent;
+                        off = offNext += cchEolSeq;
+                        continue;
+                    }
+
+                    offNext  = pchTmp - pszContent;
+                    cchLine  = offNext - off;
+
+                    offFirstWord = off;
+                    while (offFirstWord < offNext && KMK_CC_EVAL_IS_SPACE(pszContent[offFirstWord]))
+                        offFirstWord++;
+
+                    offNext += cchEolSeq;
+                    Compiler.cEscEols = 0;
+                    Compiler.iEscEol  = 0;
+                }
+                else
+                    kmk_cc_eval_fatal_eol(&Compiler, pchTmp, Compiler.iLine, off);
+            }
+            /* The complicated, less common cases. */
+            else
+            {
+                Compiler.cEscEols = 0;
+                Compiler.iEscEol  = 0;
+                offFirstWord = offNext;
+                for (;;)
+                {
+                    if (pchTmp)
+                    {
+                        if (   cchEolSeq == 1
+                            || pchTmp[1] == Compiler.chSecondEol)
+                        {
+                            size_t offEsc;
+                            if (offFirstWord != offNext)
+                                offNext = pchTmp - pszContent;
+                            else
+                            {
+                                offNext = pchTmp - pszContent;
+                                while (offFirstWord < offNext && KMK_CC_EVAL_IS_SPACE(pszContent[offFirstWord]))
+                                    offFirstWord++;
+                            }
+
+
+                            /* Is it an escape sequence? */
+                            if (   !offNext
+                                || pchTmp[-1] != '\\')
+                            {
+                                cchLine  = offNext - off;
+                                offNext += cchEolSeq;
+                                break;
+                            }
+                            if (offNext < 2 || pchTmp[-2] != '\\')
+                                offEsc = offNext - 1;
+                            else
+                            {
+                                /* Count how many backslashes there are. Must be odd number to be an escape
+                                   sequence.  Normally we keep half of them, except for command lines.  */
+                                size_t cSlashes = 2;
+                                while (offNext >= cSlashes && pchTmp[0 - cSlashes] == '\\')
+                                    cSlashes--;
+                                if (!(cSlashes & 1))
+                                {
+                                    cchLine  = offNext - off;
+                                    offNext += cchEolSeq;
+                                    break;
+                                }
+                                offEsc = offNext - (cSlashes >> 1);
+                            }
+
+                            /* Record it. */
+                            if (Compiler.cEscEols < Compiler.cEscEolsAllocated) { /* likely */ }
+                            else
+                            {
+                                KMK_CC_ASSERT(Compiler.cEscEols == Compiler.cEscEolsAllocated);
+                                Compiler.cEscEolsAllocated = Compiler.cEscEolsAllocated
+                                                           ? Compiler.cEscEolsAllocated * 2 : 2;
+                                Compiler.paEscEols = (PKMKCCEVALESCEOL)xrealloc(Compiler.paEscEols,
+                                                                                  Compiler.cEscEolsAllocated
+                                                                                * sizeof(Compiler.paEscEols[0]));
+                            }
+                            Compiler.paEscEols[Compiler.cEscEols].offEsc = offEsc;
+                            Compiler.paEscEols[Compiler.cEscEols].offEol = offNext;
+                            Compiler.cEscEols++;
+
+                            /* Advance. */
+                            offNext += cchEolSeq;
+                            if (offFirstWord == offEsc)
+                            {
+                                offFirstWord = offNext;
+                                Compiler.iEscEol++;
+                            }
+                        }
+                        else
+                            kmk_cc_eval_fatal_eol(&Compiler, pchTmp, Compiler.iLine, off);
+                    }
+                    else
+                    {
+                        /* End of input. Happens only once per compilation, nothing to optimize for. */
+                        if (offFirstWord == offNext)
+                            while (offFirstWord < cchContent && KMK_CC_EVAL_IS_SPACE(pszContent[offFirstWord]))
+                                offFirstWord++;
+                        offNext = cchContent;
+                        cchLine = cchContent - off;
+                        break;
+                    }
+                    pchTmp = (const char *)memchr(&pszContent[offNext], chFirstEol, cchContent - offNext);
+                }
+            }
+            KMK_CC_ASSERT(offNext       <= cchContent);
+            KMK_CC_ASSERT(offNext       >= off + cchLine);
+            KMK_CC_ASSERT(off + cchLine <= cchContent && cchLine <= cchContent);
+            KMK_CC_ASSERT(offFirstWord  <= off + cchLine);
+            KMK_CC_ASSERT(offFirstWord  >= off);
+            KMK_CC_ASSERT(pszContent[offFirstWord] != ' ' && pszContent[offFirstWord] != '\t');
+
+            KMK_CC_EVAL_DPRINTF(("#%03u: %*.*s\n", Compiler.iLine, (int)cchLine, (int)cchLine, &pszContent[off]));
+
+            /*
+             * Skip blank lines.
+             */
+            if (offFirstWord < off + cchLine)
+            {
+                /*
+                 * Command? Ignore command prefix if no open recipe (SunOS 4 behavior).
+                 */
+                if (   pszContent[off] == Compiler.chCmdPrefix
+                    && (Compiler.pRecipe || Compiler.fNoTargetRecipe))
+                {
+                    if (!Compiler.fNoTargetRecipe)
+                        kmk_cc_eval_handle_command(&Compiler, &pszContent[off], cchLine);
+                }
+                /*
+                 * Since it's not a command line, we can now skip comment lines
+                 * even with a tab indentation.  If it's not a comment line, we
+                 * tentatively strip any trailing comment.
+                 */
+                else if (pszContent[offFirstWord] != '#')
+                {
+                    const char *pchWord = &pszContent[offFirstWord];
+                    size_t      cchLeft = off + cchLine - offFirstWord;
+                    char        ch;
+
+                    Compiler.cchLineWithComments = cchLine;
+                    pchTmp = (const char *)memchr(pchWord, '#', cchLeft);
+                    if (pchTmp)
+                    {
+                        cchLeft = pchTmp - pchWord;
+                        cchLine = pchTmp - &pszContent[off];
+                    }
+                    Compiler.cchLine = cchLine; /** @todo only used by assertions. */
+                    Compiler.offLine = off;     /** @todo only used by fatal errors. */
+
+#ifdef KMK_CC_STRICT
+                    Compiler.cWords = 0x424242;
+#endif
+
+                    /*
+                     * If not a directive or variable qualifier, it's either a variable
+                     * assignment or a recipe.
+                     */
+                    ch = *pchWord;
+                    if (   !KMK_CC_EVAL_IS_1ST_IN_KEYWORD(ch)
+                        || !KMK_CC_EVAL_IS_2ND_IN_KEYWORD(pchWord[1]))
+                    {
+                        if (memchr(pchWord, '=', cchLeft))
+                            kmk_cc_eval_handle_assignment_or_recipe(&Compiler, pchWord, cchLeft, 0 /*fQualifiers*/);
+                        else
+                            kmk_cc_eval_handle_recipe(&Compiler, pchWord, cchLeft);
+                    }
+                    else
+                    {
+                        /* Possible directive or variable qualifier. */
+                        Compiler.offNext = offNext;
+                        if (kmk_cc_eval_try_handle_keyword(&Compiler, ch, pchWord, cchLeft))
+                            offNext = Compiler.offNext;
+                        /* No, that wasn't it... */
+                        else if (memchr(pchWord, '=', cchLeft))
+                            kmk_cc_eval_handle_assignment_or_recipe(&Compiler, pchWord, cchLeft, 0 /*fQualifiers*/);
+                        else
+                            kmk_cc_eval_handle_recipe(&Compiler, pchTmp, pchWord, cchLeft);
+                    }
+                }
+            }
+
+            /*
+             * Advance to the next line.
+             */
+            off             = offNext;
+            Compiler.iLine += Compiler.cEscEols + 1;
+        }
+    }
+
+    /*
+     * Check whether
+     */
+
+    kmk_cc_eval_delete_compiler(&Compiler);
+    KMK_CC_EVAL_DPRINTF(("kmk_cc_eval_compile_worker - done (%s/%s)\n\n", pEvalProg->pszFilename, pEvalProg->pszVarName));
+    return 0;
+}
+
+
+
+static PKMKCCEVALPROG kmk_cc_eval_compile(const char *pszContent, size_t cchContent,
+                                          const char *pszFilename, unsigned iLine, const char *pszVarName)
+{
+    /*
+     * Estimate block size, allocate one and initialize it.
+     */
+    PKMKCCEVALPROG  pEvalProg;
+    PKMKCCBLOCK     pBlock;
+    pEvalProg = kmk_cc_block_alloc_first(&pBlock, sizeof(*pEvalProg), cchContent / 32); /** @todo adjust */
+    if (pEvalProg)
+    {
+        pEvalProg->pBlockTail   = pBlock;
+        pEvalProg->pFirstInstr  = (PKMKCCEVALCORE)kmk_cc_block_get_next_ptr(pBlock);
+        pEvalProg->pszFilename  = pszFilename ? pszFilename : "<unknown>";
+        pEvalProg->pszVarName   = pszVarName;
+        pEvalProg->cRefs        = 1;
+#ifdef KMK_CC_STRICT
+        pEvalProg->uInputHash   = kmk_cc_debug_string_hash_n(0, pszContent, cchContent);
+#endif
+
+        /*
+         * Do the actual compiling.
+         */
+#ifdef CONFIG_WITH_EVAL_COMPILER
+        if (kmk_cc_eval_compile_worker(pEvalProg, pszContent, cchContent, iLine) == 0)
+#else
+        if (0)
+#endif
+        {
+#ifdef KMK_CC_WITH_STATS
+            pBlock = pEvalProg->pBlockTail;
+            if (!pBlock->pNext)
+                g_cSingleBlockEvalProgs++;
+            else if (!pBlock->pNext->pNext)
+                g_cTwoBlockEvalProgs++;
+            else
+                g_cMultiBlockEvalProgs++;
+            for (; pBlock; pBlock = pBlock->pNext)
+            {
+                g_cBlocksAllocatedEvalProgs++;
+                g_cbAllocatedEvalProgs += pBlock->cbBlock;
+                g_cbUnusedMemEvalProgs += pBlock->cbBlock - pBlock->offNext;
+            }
+#endif
+            return pEvalProg;
+        }
+        kmk_cc_block_free_list(pEvalProg->pBlockTail);
+    }
+    return NULL;
+}
+
+
+/**
+ * Compiles a variable direct evaluation as is, setting v->evalprog on success.
+ *
+ * @returns Pointer to the program on success, NULL if no program was created.
+ * @param   pVar        Pointer to the variable.
+ */
+struct kmk_cc_evalprog   *kmk_cc_compile_variable_for_eval(struct variable *pVar)
+{
+    PKMKCCEVALPROG pEvalProg = pVar->evalprog;
+    if (!pEvalProg)
+    {
+#ifdef CONFIG_WITH_EVAL_COMPILER
+        pEvalProg = kmk_cc_eval_compile(pVar->value, pVar->value_length,
+                                        pVar->fileinfo.filenm, pVar->fileinfo.lineno, pVar->name);
+        pVar->evalprog = pEvalProg;
+#endif
+        g_cVarForEvalCompilations++;
+    }
+    return pEvalProg;
+}
+
+
+/**
+ * Compiles a makefile for
+ *
+ * @returns Pointer to the program on success, NULL if no program was created.
+ * @param   pVar        Pointer to the variable.
+ */
+struct kmk_cc_evalprog   *kmk_cc_compile_file_for_eval(FILE *pFile, const char *pszFilename)
+{
+    PKMKCCEVALPROG  pEvalProg;
+
+    /*
+     * Read the entire file into a zero terminate memory buffer.
+     */
+    size_t          cchContent = 0;
+    char           *pszContent = NULL;
+    struct stat st;
+    if (!fstat(fileno(pFile), &st))
+    {
+        if (   st.st_size > (off_t)KMK_CC_EVAL_MAX_COMPILE_SIZE
+            && st.st_size < 0)
+            fatal(NULL, _("Makefile too large to compile: %ld bytes (%#lx) - max %uMB"),
+                  (long)st.st_size, (long)st.st_size, KMK_CC_EVAL_MAX_COMPILE_SIZE / 1024 / 1024);
+        cchContent = (size_t)st.st_size;
+        pszContent = (char *)xmalloc(cchContent + 1);
+
+        cchContent = fread(pszContent, 1, cchContent, pFile);
+        if (ferror(pFile))
+            fatal(NULL, _("Read error: %s"), strerror(errno));
+    }
+    else
+    {
+        size_t cbAllocated = 2048;
+        do
+        {
+            cbAllocated *= 2;
+            if (cbAllocated > KMK_CC_EVAL_MAX_COMPILE_SIZE)
+                fatal(NULL, _("Makefile too large to compile: max %uMB"), KMK_CC_EVAL_MAX_COMPILE_SIZE / 1024 / 1024);
+            pszContent = (char *)xrealloc(pszContent, cbAllocated);
+            cchContent += fread(&pszContent[cchContent], 1, cbAllocated - 1 - cchContent, pFile);
+            if (ferror(pFile))
+                fatal(NULL, _("Read error: %s"), strerror(errno));
+        } while (!feof(pFile));
+    }
+    pszContent[cchContent] = '\0';
+
+    /*
+     * Call common function to do the compilation.
+     */
+    pEvalProg = kmk_cc_eval_compile(pszContent, cchContent, pszFilename, 1, NULL /*pszVarName*/);
+    g_cFileForEvalCompilations++;
+
+    free(pszContent);
+    if (!pEvalProg)
+        fseek(pFile, 0, SEEK_SET);
+    return pEvalProg;
+}
+
+
+/**
+ * Equivalent of eval_buffer, only it's using the evalprog of the variable.
+ *
+ * @param   pVar        Pointer to the variable. Must have a program.
+ */
+void kmk_exec_eval_variable(struct variable *pVar)
+{
+    KMK_CC_ASSERT(pVar->evalprog);
+    assert(0);
+}
+
+
+/**
+ * Worker for eval_makefile.
+ *
+ * @param   pEvalProg   The program pointer.
+ */
+void kmk_exec_eval_file(struct kmk_cc_evalprog *pEvalProg)
+{
+    KMK_CC_ASSERT(pEvalProg);
+    assert(0);
+
+}
+
+
+
+/*
+ *
+ * Program destruction hooks.
+ * Program destruction hooks.
+ * Program destruction hooks.
+ *
+ */
+
+
+/**
+ * Called when a variable with expandprog or/and evalprog changes.
+ *
+ * @param   pVar        Pointer to the variable.
+ */
+void  kmk_cc_variable_changed(struct variable *pVar)
+{
+    PKMKCCEXPPROG pProg = pVar->expandprog;
+
+    KMK_CC_ASSERT(pVar->evalprog || pProg);
+
+    if (pVar->evalprog)
+    {
+        kmk_cc_block_free_list(pVar->evalprog->pBlockTail);
+        pVar->evalprog = NULL;
+    }
+
+    if (pProg)
+    {
+        if (pProg->cRefs == 1)
+            kmk_cc_block_free_list(pProg->pBlockTail);
+        else
+            fatal(NULL, _("Modifying a variable (%s) while its expansion program is running is not supported"), pVar->name);
+        pVar->expandprog = NULL;
+    }
+}
+
+
+/**
+ * Called when a variable with expandprog or/and evalprog is deleted.
+ *
+ * @param   pVar        Pointer to the variable.
+ */
+void  kmk_cc_variable_deleted(struct variable *pVar)
+{
+    PKMKCCEXPPROG pProg = pVar->expandprog;
+
+    KMK_CC_ASSERT(pVar->evalprog || pProg);
+
+    if (pVar->evalprog)
+    {
+        kmk_cc_block_free_list(pVar->evalprog->pBlockTail);
+        pVar->evalprog = NULL;
+    }
+
+    if (pProg)
+    {
+        if (pProg->cRefs == 1)
+            kmk_cc_block_free_list(pProg->pBlockTail);
+        else
+            fatal(NULL, _("Deleting a variable (%s) while its expansion program is running is not supported"), pVar->name);
+        pVar->expandprog = NULL;
+    }
+}
+
+
+
+
+
+
+
+#endif /* CONFIG_WITH_COMPILER */
+
diff --git a/src/kmk/kmk_cc_exec.h b/src/kmk/kmk_cc_exec.h
new file mode 100644
index 0000000..39c5142
--- /dev/null
+++ b/src/kmk/kmk_cc_exec.h
@@ -0,0 +1,48 @@
+/* $Id: kmk_cc_exec.h 3154 2018-03-15 23:35:33Z bird $ */
+/** @file
+ * kmk_cc - Make "Compiler".
+ */
+
+/*
+ * Copyright (c) 2015-2017 knut st. osmundsen <bird-kBuild-spam-xviiv@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef ___kmk_cc_and_exec_h
+#define ___kmk_cc_and_exec_h
+#ifdef CONFIG_WITH_COMPILER
+
+#include <stdio.h>
+
+
+void  kmk_cc_init(void);
+void  kmk_cc_print_stats(void);
+
+struct variable;
+extern struct kmk_cc_expandprog *kmk_cc_compile_variable_for_expand(struct variable *pVar);
+extern struct kmk_cc_evalprog   *kmk_cc_compile_variable_for_eval(struct variable *pVar);
+extern struct kmk_cc_evalprog   *kmk_cc_compile_file_for_eval(FILE *pFile, const char *pszFilename);
+extern char *kmk_exec_expand_to_var_buf(struct variable *pVar, char *pchDst);
+extern void kmk_exec_eval_file(struct kmk_cc_evalprog *pProg);
+extern void kmk_exec_eval_variable(struct variable *pVar);
+extern void kmk_cc_variable_changed(struct variable *pVar);
+extern void kmk_cc_variable_deleted(struct variable *pVar);
+
+
+#endif /* CONFIG_WITH_COMPILER */
+#endif
diff --git a/src/kmk/kmkbuiltin.c b/src/kmk/kmkbuiltin.c
new file mode 100644
index 0000000..8f00e98
--- /dev/null
+++ b/src/kmk/kmkbuiltin.c
@@ -0,0 +1,507 @@
+/* $Id: kmkbuiltin.c 3389 2020-06-26 17:16:26Z bird $ */
+/** @file
+ * kMk Builtin command execution.
+ */
+
+/*
+ * Copyright (c) 2005-2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <assert.h>
+#include <sys/stat.h>
+#ifdef _MSC_VER
+# include <io.h>
+#endif
+
+#include "makeint.h"
+#include "job.h"
+#include "variable.h"
+#if defined(KBUILD_OS_WINDOWS) && defined(CONFIG_NEW_WIN_CHILDREN)
+# include "w32/winchildren.h"
+#endif
+#include "kmkbuiltin/err.h"
+#include "kmkbuiltin.h"
+
+#ifndef _MSC_VER
+extern char **environ;
+#endif
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+#ifdef CONFIG_WITH_KMK_BUILTIN_STATS
+extern int print_stats_flag;
+#endif
+
+
+
+int kmk_builtin_command(const char *pszCmd, struct child *pChild, char ***ppapszArgvToSpawn, pid_t *pPidSpawned)
+{
+    int         argc;
+    char      **argv;
+    int         rc;
+    char       *pszzCmd;
+    char       *pszDst;
+    int         fOldStyle = 0;
+
+    /*
+     * Check and skip the prefix.
+     */
+    if (strncmp(pszCmd, "kmk_builtin_", sizeof("kmk_builtin_") - 1))
+    {
+        fprintf(stderr, "kmk_builtin: Invalid command prefix '%s'!\n", pszCmd);
+        return 1;
+    }
+
+    /*
+     * Parse arguments.
+     */
+    rc      = 0;
+    argc    = 0;
+    argv    = NULL;
+    pszzCmd = pszDst = (char *)strdup(pszCmd);
+    if (!pszDst)
+    {
+        fprintf(stderr, "kmk_builtin: out of memory. argc=%d\n", argc);
+        return 1;
+    }
+    do
+    {
+        const char * const pszSrcStart = pszCmd;
+        char ch;
+        char chQuote;
+
+        /*
+         * Start new argument.
+         */
+        if (!(argc % 16))
+        {
+            void *pv = realloc(argv, sizeof(char *) * (argc + 17));
+            if (!pv)
+            {
+                fprintf(stderr, "kmk_builtin: out of memory. argc=%d\n", argc);
+                rc = 1;
+                break;
+            }
+            argv = (char **)pv;
+        }
+        argv[argc++] = pszDst;
+        argv[argc]   = NULL;
+
+        if (!fOldStyle)
+        {
+            /*
+             * Process the next argument, bourne style.
+             */
+            chQuote = 0;
+            ch = *pszCmd++;
+            do
+            {
+                /* Unquoted mode? */
+                if (chQuote == 0)
+                {
+                    if (ch != '\'' && ch != '"')
+                    {
+                        if (!isspace(ch))
+                        {
+                            if (ch != '\\')
+                                *pszDst++ = ch;
+                            else
+                            {
+                                ch = *pszCmd++;
+                                if (ch == '\n')                    /* escaped end-of-line */
+                                    break;
+                                if (ch == '\r' && *pszCmd == '\n') /* escaped end-of-line */
+                                {
+                                    pszCmd++;
+                                    break;
+                                }
+                                if (ch)
+                                    *pszDst++ = ch;
+                                else
+                                {
+                                    fprintf(stderr, "kmk_builtin: Incomplete escape sequence in argument %d: %s\n",
+                                            argc, pszSrcStart);
+                                    rc = 1;
+                                    break;
+                                }
+                            }
+                        }
+                        else
+                            break;
+                    }
+                    else
+                        chQuote = ch;
+                }
+                /* Quoted mode */
+                else if (ch != chQuote)
+                {
+                    if (   ch != '\\'
+                        || chQuote == '\'')
+                        *pszDst++ = ch;
+                    else
+                    {
+                        ch = *pszCmd++;
+                        if (ch)
+                        {
+                            if (   ch != '\\'
+                                && ch != '"'
+                                && ch != '`'
+                                && ch != '$'
+                                && ch != '\n')
+                                *pszDst++ = '\\';
+                            *pszDst++ = ch;
+                        }
+                        else
+                        {
+                            fprintf(stderr, "kmk_builtin: Unbalanced quote in argument %d: %s\n", argc, pszSrcStart);
+                            rc = 1;
+                            break;
+                        }
+                    }
+                }
+                else
+                    chQuote = 0;
+            } while ((ch = *pszCmd++) != '\0');
+        }
+        else
+        {
+            /*
+             * Old style in case we ever need it.
+             */
+            ch = *pszCmd++;
+            if (ch != '"' && ch != '\'')
+            {
+                do
+                    *pszDst++ = ch;
+                while ((ch = *pszCmd++) != '\0' && !isspace(ch));
+            }
+            else
+            {
+                chQuote = ch;
+                for (;;)
+                {
+                    char *pszEnd = strchr(pszCmd, chQuote);
+                    if (pszEnd)
+                    {
+                        fprintf(stderr, "kmk_builtin: Unbalanced quote in argument %d: %s\n", argc, pszSrcStart);
+                        rc = 1;
+                        break;
+                    }
+                    memcpy(pszDst, pszCmd, pszEnd - pszCmd);
+                    pszDst += pszEnd - pszCmd;
+                    if (pszEnd[1] != chQuote)
+                        break;
+                    *pszDst++ = chQuote;
+                }
+            }
+        }
+        *pszDst++ = '\0';
+
+        /*
+         * Skip argument separators (IFS=space() for now).  Check for EOS.
+         */
+        if (ch != 0)
+            while (   (ch = *pszCmd)
+                   && (   isspace(ch)
+                       || (ch == '\\' && (pszCmd[1] == '\n' || (pszCmd[1] == '\r' && pszCmd[2] == '\n')))))
+                pszCmd++;
+        if (ch == 0)
+            break;
+    } while (rc == 0);
+
+    /*
+     * Execute the command if parsing was successful.
+     */
+    if (rc == 0)
+        rc = kmk_builtin_command_parsed(argc, argv, pChild, ppapszArgvToSpawn, pPidSpawned);
+
+    /* clean up and return. */
+    free(argv);
+    free(pszzCmd);
+    return rc;
+}
+
+
+/**
+ * kmk built command.
+ */
+static const KMKBUILTINENTRY g_aBuiltIns[] =
+{
+#define BUILTIN_ENTRY(a_fn, a_sz, a_uFnSignature, fMtSafe, fNeedEnv) \
+    {  { { sizeof(a_sz) - 1, a_sz, } }, { (uintptr_t)a_fn }, a_uFnSignature,   fMtSafe, fNeedEnv }
+
+    /* More frequently used commands: */
+    BUILTIN_ENTRY(kmk_builtin_append,   "append",       FN_SIG_MAIN_SPAWNS,     0, 0),
+    BUILTIN_ENTRY(kmk_builtin_printf,   "printf",       FN_SIG_MAIN,            0, 0),
+    BUILTIN_ENTRY(kmk_builtin_echo,     "echo",         FN_SIG_MAIN,            0, 0),
+    BUILTIN_ENTRY(kmk_builtin_install,  "install",      FN_SIG_MAIN,            1, 0),
+    BUILTIN_ENTRY(kmk_builtin_kDepObj,  "kDepObj",      FN_SIG_MAIN,            1, 0),
+#ifdef KBUILD_OS_WINDOWS
+    BUILTIN_ENTRY(kmk_builtin_kSubmit,  "kSubmit",      FN_SIG_MAIN_SPAWNS,     0, 1),
+    BUILTIN_ENTRY(kmk_builtin_kill,     "kill",         FN_SIG_MAIN,            0, 0),
+#endif
+    BUILTIN_ENTRY(kmk_builtin_mkdir,    "mkdir",        FN_SIG_MAIN,            0, 0),
+    BUILTIN_ENTRY(kmk_builtin_mv,       "mv",           FN_SIG_MAIN,            0, 0),
+    BUILTIN_ENTRY(kmk_builtin_redirect, "redirect",     FN_SIG_MAIN_SPAWNS,     1, 1),
+    BUILTIN_ENTRY(kmk_builtin_rm,       "rm",           FN_SIG_MAIN,            1, 1),
+    BUILTIN_ENTRY(kmk_builtin_rmdir,    "rmdir",        FN_SIG_MAIN,            0, 0),
+    BUILTIN_ENTRY(kmk_builtin_test,     "test",         FN_SIG_MAIN_TO_SPAWN,   0, 0),
+    /* Less frequently used commands: */
+    BUILTIN_ENTRY(kmk_builtin_kDepIDB,  "kDepIDB",      FN_SIG_MAIN,            0, 0),
+    BUILTIN_ENTRY(kmk_builtin_chmod,    "chmod",        FN_SIG_MAIN,            0, 0),
+    BUILTIN_ENTRY(kmk_builtin_cp,       "cp",           FN_SIG_MAIN,            1, 1),
+    BUILTIN_ENTRY(kmk_builtin_expr,     "expr",         FN_SIG_MAIN,            0, 0),
+    BUILTIN_ENTRY(kmk_builtin_ln,       "ln",           FN_SIG_MAIN,            0, 0),
+    BUILTIN_ENTRY(kmk_builtin_md5sum,   "md5sum",       FN_SIG_MAIN,            1, 0),
+    BUILTIN_ENTRY(kmk_builtin_cmp,      "cmp",          FN_SIG_MAIN,            0, 0),
+    BUILTIN_ENTRY(kmk_builtin_cat,      "cat",          FN_SIG_MAIN,            0, 0),
+    BUILTIN_ENTRY(kmk_builtin_touch,    "touch",        FN_SIG_MAIN,            0, 0),
+    BUILTIN_ENTRY(kmk_builtin_sleep,    "sleep",        FN_SIG_MAIN,            1, 0),
+    BUILTIN_ENTRY(kmk_builtin_dircache, "dircache",     FN_SIG_MAIN,            0, 0),
+};
+
+#ifdef CONFIG_WITH_KMK_BUILTIN_STATS
+/** Statistics running in parallel to g_aBuiltIns. */
+struct
+{
+    big_int         cNs;
+    unsigned        cTimes;
+    unsigned        cAsyncTimes;
+} g_aBuiltInStats[sizeof(g_aBuiltIns) / sizeof(g_aBuiltIns[0])];
+#endif
+
+
+int kmk_builtin_command_parsed(int argc, char **argv, struct child *pChild, char ***ppapszArgvToSpawn, pid_t *pPidSpawned)
+{
+    /*
+     * Check and skip the prefix.
+     */
+    static const char s_szPrefix[] = "kmk_builtin_";
+    const char *pszCmd = argv[0];
+    if (strncmp(pszCmd, s_szPrefix, sizeof(s_szPrefix) - 1) == 0)
+    {
+        struct KMKBUILTINENTRY const *pEntry;
+        size_t cchAndStart;
+#if K_ENDIAN == K_ENDIAN_BIG
+        size_t cch;
+#endif
+        int    cLeft;
+
+        pszCmd += sizeof(s_szPrefix) - 1;
+
+        /*
+         * Calc the length and start word to avoid calling memcmp/strcmp on each entry.
+         */
+#if K_ARCH_BITS != 64 && K_ARCH_BITS != 32
+# error "PORT ME!"
+#endif
+        cchAndStart = strlen(pszCmd);
+#if K_ENDIAN == K_ENDIAN_BIG
+        cch = cchAndStart;
+        cchAndStart <<= K_ARCH_BITS - 8;
+        switch (cch)
+        {
+            default:                                   /* fall thru */
+# if K_ARCH_BITS >= 64
+            case 7: cchAndStart |= (size_t)pszCmd[6];                       /* fall thru */
+            case 6: cchAndStart |= (size_t)pszCmd[5] << (K_ARCH_BITS - 56); /* fall thru */
+            case 5: cchAndStart |= (size_t)pszCmd[4] << (K_ARCH_BITS - 48); /* fall thru */
+            case 4: cchAndStart |= (size_t)pszCmd[3] << (K_ARCH_BITS - 40); /* fall thru */
+# endif
+            /* fall thru - gcc 8.2.0 is confused by # endif */
+            case 3: cchAndStart |= (size_t)pszCmd[2] << (K_ARCH_BITS - 32); /* fall thru */
+            case 2: cchAndStart |= (size_t)pszCmd[1] << (K_ARCH_BITS - 24); /* fall thru */
+            case 1: cchAndStart |= (size_t)pszCmd[0] << (K_ARCH_BITS - 16); /* fall thru */
+            case 0: break;
+        }
+#else
+        switch (cchAndStart)
+        {
+            default:                                        /* fall thru */
+# if K_ARCH_BITS >= 64
+            case 7: cchAndStart |= (size_t)pszCmd[6] << 56; /* fall thru */
+            case 6: cchAndStart |= (size_t)pszCmd[5] << 48; /* fall thru */
+            case 5: cchAndStart |= (size_t)pszCmd[4] << 40; /* fall thru */
+            case 4: cchAndStart |= (size_t)pszCmd[3] << 32; /* fall thru */
+# endif
+            /* fall thru - gcc 8.2.0 is confused by # endif */
+            case 3: cchAndStart |= (size_t)pszCmd[2] << 24; /* fall thru */
+            case 2: cchAndStart |= (size_t)pszCmd[1] << 16; /* fall thru */
+            case 1: cchAndStart |= (size_t)pszCmd[0] <<  8; /* fall thru */
+            case 0: break;
+        }
+#endif
+
+        /*
+         * Look up the builtin command in the table.
+         */
+        pEntry  = &g_aBuiltIns[0];
+        cLeft   = sizeof(g_aBuiltIns) / sizeof(g_aBuiltIns[0]);
+        while (cLeft-- > 0)
+            if (   pEntry->uName.cchAndStart != cchAndStart
+                || (   pEntry->uName.s.cch >= sizeof(cchAndStart)
+                    && memcmp(pEntry->uName.s.sz, pszCmd, pEntry->uName.s.cch) != 0) )
+                pEntry++;
+            else
+            {
+                /*
+                 * That's a match!
+                 *
+                 * First get the environment if it is actually needed.  This is
+                 * especially important when we run on a worker thread as it must
+                 * not under any circumstances do stuff like target_environment.
+                 */
+                int    rc;
+                char **papszEnvVars = NULL;
+                if (pEntry->fNeedEnv)
+                {
+                    papszEnvVars = pChild->environment;
+                    if (!papszEnvVars)
+                        pChild->environment = papszEnvVars = target_environment(pChild->file);
+                }
+
+#if defined(KBUILD_OS_WINDOWS) && defined(CONFIG_NEW_WIN_CHILDREN)
+                /*
+                 * If the built-in is multi thread safe, we will run it on a job slot thread.
+                 */
+                if (pEntry->fMtSafe)
+                {
+                    rc = MkWinChildCreateBuiltIn(pEntry, argc, argv, papszEnvVars, pChild, pPidSpawned);
+# ifdef CONFIG_WITH_KMK_BUILTIN_STATS
+                    g_aBuiltInStats[pEntry - &g_aBuiltIns[0]].cAsyncTimes++;
+# endif
+                }
+                else
+#endif
+                {
+                    /*
+                     * Call the worker function.
+                     */
+#ifdef CONFIG_WITH_KMK_BUILTIN_STATS
+                    big_int nsStart = print_stats_flag ? nano_timestamp() : 0;
+#endif
+                    KMKBUILTINCTX Ctx;
+                    assert(g_fUMask == umask(g_fUMask));
+
+                    Ctx.pszProgName = pEntry->uName.s.sz;
+                    Ctx.pOut = pChild ? &pChild->output : NULL;
+
+                    if (pEntry->uFnSignature == FN_SIG_MAIN)
+                        rc = pEntry->u.pfnMain(argc, argv, papszEnvVars, &Ctx);
+                    else if (pEntry->uFnSignature == FN_SIG_MAIN_SPAWNS)
+                        rc = pEntry->u.pfnMainSpawns(argc, argv, papszEnvVars, &Ctx, pChild, pPidSpawned);
+                    else if (pEntry->uFnSignature == FN_SIG_MAIN_TO_SPAWN)
+                    {
+                        /*
+                         * When we got something to execute, check if the child is a kmk_builtin thing.
+                         * We recurse here, both because I'm lazy and because it's easier to debug a
+                         * problem then (the call stack shows what's been going on).
+                         */
+                        rc = pEntry->u.pfnMainToSpawn(argc, argv, papszEnvVars, &Ctx, ppapszArgvToSpawn);
+                        if (   !rc
+                            && *ppapszArgvToSpawn
+                            && !strncmp(**ppapszArgvToSpawn, s_szPrefix, sizeof(s_szPrefix) - 1))
+                        {
+                            char **argv_new = *ppapszArgvToSpawn;
+                            int argc_new = 1;
+                            while (argv_new[argc_new])
+                              argc_new++;
+
+                            assert(argv_new[0] != argv[0]);
+                            assert(!*pPidSpawned);
+
+                            *ppapszArgvToSpawn = NULL;
+                            rc = kmk_builtin_command_parsed(argc_new, argv_new, pChild, ppapszArgvToSpawn, pPidSpawned);
+
+                            free(argv_new[0]);
+                            free(argv_new);
+                        }
+                    }
+                    else
+                        rc = 99;
+
+                    assert(g_fUMask == umask(g_fUMask)); /* builtin command must preserve umask! */
+
+#ifdef CONFIG_WITH_KMK_BUILTIN_STATS
+                    if (print_stats_flag)
+                    {
+                        uintptr_t iEntry = pEntry - &g_aBuiltIns[0];
+                        g_aBuiltInStats[iEntry].cTimes++;
+                        g_aBuiltInStats[iEntry].cNs += nano_timestamp() - nsStart;
+                    }
+#endif
+                }
+                return rc;
+            }
+
+        /*
+         * No match! :-(
+         */
+        fprintf(stderr, "kmk_builtin: Unknown command '%s%s'!\n", s_szPrefix, pszCmd);
+    }
+    else
+        fprintf(stderr, "kmk_builtin: Invalid command prefix '%s'!\n", pszCmd);
+    return 1;
+}
+
+#ifndef KBUILD_OS_WINDOWS
+/** Dummy. */
+int kmk_builtin_dircache(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+    (void)argc; (void)argv; (void)envp; (void)pCtx;
+    return 0;
+}
+#endif
+
+#ifdef CONFIG_WITH_KMK_BUILTIN_STATS
+/**
+ * Prints the statistiscs to the given output stream.
+ */
+extern void kmk_builtin_print_stats(FILE *pOutput, const char *pszPrefix)
+{
+    const unsigned cEntries = sizeof(g_aBuiltInStats) / sizeof(g_aBuiltInStats[0]);
+    unsigned i;
+    assert(print_stats_flag);
+    fprintf(pOutput, "\n%skmk built-in command statistics:\n", pszPrefix);
+    for (i = 0; i < cEntries; i++)
+        if (g_aBuiltInStats[i].cTimes > 0)
+        {
+            char szTotal[64];
+            char szAvg[64];
+            format_elapsed_nano(szTotal, sizeof(szTotal), g_aBuiltInStats[i].cNs);
+            format_elapsed_nano(szAvg, sizeof(szAvg), g_aBuiltInStats[i].cNs / g_aBuiltInStats[i].cTimes);
+            fprintf(pOutput, "%s kmk_builtin_%-9s: %4u times, %9s total, %9s/call\n",
+                    pszPrefix, g_aBuiltIns[i].uName.s.sz, g_aBuiltInStats[i].cTimes, szTotal, szAvg);
+        }
+        else if (g_aBuiltInStats[i].cAsyncTimes > 0)
+            fprintf(pOutput, "%s kmk_builtin_%-9s: %4u times in worker thread\n",
+                    pszPrefix, g_aBuiltIns[i].uName.s.sz, g_aBuiltInStats[i].cAsyncTimes);
+}
+#endif
+
diff --git a/src/kmk/kmkbuiltin.h b/src/kmk/kmkbuiltin.h
new file mode 100644
index 0000000..955a04d
--- /dev/null
+++ b/src/kmk/kmkbuiltin.h
@@ -0,0 +1,184 @@
+/* $Id: kmkbuiltin.h 3352 2020-06-05 00:31:50Z bird $ */
+/** @file
+ * kMk Builtin command handling.
+ */
+
+/*
+ * Copyright (c) 2005-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef ___kmk_kmkbuiltin_h___
+#define ___kmk_kmkbuiltin_h___
+
+#ifdef _MSC_VER
+# ifndef pid_t /* see config.h.win */
+#  define pid_t intptr_t /* Note! sub_proc.c needs it to be pointer sized. */
+# endif
+#else
+# include <sys/types.h>
+#endif
+#include <fcntl.h>
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+
+/* For the GNU/hurd weirdo. */
+#ifndef PATH_MAX
+# ifdef MAXPATHLEN
+#  define PATH_MAX  MAXPATHLEN
+# else
+#  define PATH_MAX  4096
+# endif
+#endif
+#ifndef MAXPATHLEN
+# define MAXPATHLEN PATH_MAX
+#endif
+
+/** This is for telling fopen() to get a close-on-exec handle.
+ * @todo glibc 2.7+ and recent cygwin supports 'e' for doing this. */
+#ifndef KMK_FOPEN_NO_INHERIT_MODE
+# ifdef _MSC_VER
+#  define KMK_FOPEN_NO_INHERIT_MODE "N"
+# else
+#  define KMK_FOPEN_NO_INHERIT_MODE ""
+# endif
+#endif
+
+/** This is for telling open() to open to return a close-on-exec descriptor. */
+#ifdef _O_NOINHERIT
+# define KMK_OPEN_NO_INHERIT        _O_NOINHERIT
+#elif defined(O_NOINHERIT)
+# define KMK_OPEN_NO_INHERIT        O_NOINHERIT
+#elif defined(O_CLOEXEC)
+# define KMK_OPEN_NO_INHERIT        O_CLOEXEC
+#else
+# define KMK_OPEN_NO_INHERIT        0
+#endif
+
+
+#include "kbuild_version.h"
+#if !defined(KMK_BUILTIN_STANDALONE) && !defined(KWORKER)
+# include "output.h"
+#endif
+
+struct child;
+int kmk_builtin_command(const char *pszCmd, struct child *pChild, char ***ppapszArgvToSpawn, pid_t *pPidSpawned);
+int kmk_builtin_command_parsed(int argc, char **argv, struct child *pChild, char ***ppapszArgvToSpawn, pid_t *pPidSpawned);
+
+
+/**
+ * KMK built-in command execution context.
+ */
+typedef struct KMKBUILTINCTX
+{
+    /** The program name to use in error messages. */
+    const char *pszProgName;
+    /** The KMK output synchronizer.   */
+    struct output *pOut;
+#if defined(KBUILD_OS_WINDOWS) && !defined(KMK_BUILTIN_STANDALONE)
+    /** Pointer to the worker thread, if we're on one. */
+    void *pvWorker;
+#endif
+} KMKBUILTINCTX;
+/** Pointer to kmk built-in command execution context. */
+typedef KMKBUILTINCTX *PKMKBUILTINCTX;
+
+/**
+ * kmk built-in command entry.
+ */
+typedef struct KMKBUILTINENTRY
+{
+    union
+    {
+        struct
+        {
+            unsigned char   cch;
+            char            sz[15];
+        } s;
+        size_t              cchAndStart;
+    } uName;
+    union
+    {
+        uintptr_t uPfn;
+#define FN_SIG_MAIN             0
+        int (* pfnMain)(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+#define FN_SIG_MAIN_SPAWNS      1
+        int (* pfnMainSpawns)(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx, struct child *pChild, pid_t *pPid);
+#define FN_SIG_MAIN_TO_SPAWN    2
+        int (* pfnMainToSpawn)(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx, char ***ppapszArgvToSpawn);
+    } u;
+    size_t      uFnSignature : 8;
+    size_t      fMtSafe : 1;            /**< Safe for multi threaded execution. */
+    size_t      fNeedEnv : 1;           /**< Needs the (target) environment. */
+} KMKBUILTINENTRY;
+/** Pointer to kmk built-in command entry. */
+typedef KMKBUILTINENTRY const *PCKMKBUILTINENTRY;
+
+extern int kmk_builtin_append(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx, struct child *pChild, pid_t *pPidSpawned);
+extern int kmk_builtin_cp(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_cat(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_chmod(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_cmp(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_dircache(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_echo(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_expr(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_install(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_ln(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_md5sum(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_mkdir(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_mv(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_printf(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_redirect(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx, struct child *pChild, pid_t *pPidSpawned);
+extern int kmk_builtin_rm(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_rmdir(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_sleep(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_test(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx, char ***ppapszArgvSpawn);
+extern int kmk_builtin_touch(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+#ifdef KBUILD_OS_WINDOWS
+extern int kmk_builtin_kSubmit(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx, struct child *pChild, pid_t *pPidSpawned);
+extern int kSubmitSubProcGetResult(intptr_t pvUser, int fBlock, int *prcExit, int *piSigNo);
+extern int kSubmitSubProcKill(intptr_t pvUser, int iSignal);
+extern void kSubmitSubProcCleanup(intptr_t pvUser);
+extern int kmk_builtin_kill(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+#endif
+extern int kmk_builtin_kDepIDB(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+extern int kmk_builtin_kDepObj(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx);
+
+extern char *kmk_builtin_func_printf(char *o, char **argv, const char *funcname);
+
+/* common-env-and-cwd-opt.c: */
+extern int kBuiltinOptEnvSet(PKMKBUILTINCTX pCtx, char ***ppapszEnv, unsigned *pcEnvVars, unsigned *pcAllocatedEnvVars,
+                             int cVerbosity, const char *pszValue);
+extern int kBuiltinOptEnvAppend(PKMKBUILTINCTX pCtx, char ***ppapszEnv, unsigned *pcEnvVars, unsigned *pcAllocatedEnvVars,
+                                int cVerbosity, const char *pszValue);
+extern int kBuiltinOptEnvPrepend(PKMKBUILTINCTX pCtx, char ***ppapszEnv, unsigned *pcEnvVars, unsigned *pcAllocatedEnvVars,
+                                 int cVerbosity, const char *pszValue);
+extern int kBuiltinOptEnvUnset(PKMKBUILTINCTX pCtx, char ***ppapszEnv, unsigned *pcEnvVars, unsigned *pcAllocatedEnvVars,
+                               int cVerbosity, const char *pszVarToRemove);
+extern int kBuiltinOptEnvZap(PKMKBUILTINCTX pCtx, char ***ppapszEnv, unsigned *pcEnvVars, unsigned *pcAllocatedEnvVars,
+                             int cVerbosity);
+extern void kBuiltinOptEnvCleanup(char ***ppapszEnv, unsigned cEnvVars, unsigned *pcAllocatedEnvVars);
+extern int kBuiltinOptChDir(PKMKBUILTINCTX pCtx, char *pszCwd, size_t cbCwdBuf, const char *pszValue);
+
+#ifdef CONFIG_WITH_KMK_BUILTIN_STATS
+extern void kmk_builtin_print_stats(FILE *pOutput, const char *pszPrefix);
+#endif
+
+#endif
+
diff --git a/src/kmk/kmkbuiltin/Makefile.kup b/src/kmk/kmkbuiltin/Makefile.kup
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/kmk/kmkbuiltin/Makefile.kup
diff --git a/src/kmk/kmkbuiltin/append.c b/src/kmk/kmkbuiltin/append.c
new file mode 100644
index 0000000..c34847e
--- /dev/null
+++ b/src/kmk/kmkbuiltin/append.c
@@ -0,0 +1,459 @@
+/* $Id: append.c 3246 2018-12-25 21:02:04Z bird $ */
+/** @file
+ * kMk Builtin command - append text to file.
+ */
+
+/*
+ * Copyright (c) 2005-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#ifndef KMK_BUILTIN_STANDALONE
+# include "makeint.h"
+# include "filedef.h"
+# include "variable.h"
+#else
+# include "config.h"
+#endif
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#ifdef _MSC_VER
+# include <io.h>
+#endif
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+#if !defined(KMK_BUILTIN_STANDALONE) && defined(KBUILD_OS_WINDOWS) && defined(CONFIG_NEW_WIN_CHILDREN)
+# include "../w32/winchildren.h"
+#endif
+#include "err.h"
+#include "kmkbuiltin.h"
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+#define STR_TUPLE(a_sz)     a_sz, (sizeof(a_sz) - 1)
+
+/** No-inherit open flag.   */
+#ifdef _O_NOINHERIT
+# define MY_O_NOINHERIT     _O_NOINHERIT
+#elif defined(O_NOINHERIT)
+# define MY_O_NOINHERIT     O_NOINHERIT
+#elif defined(O_CLOEXEC)
+# define MY_O_NOINHERIT     O_CLOEXEC
+#else
+# define MY_O_NOINHERIT     0
+#endif
+
+/** Binary mode open flag. */
+#ifdef _O_BINARY
+# define MY_O_BINARY        _O_BINARY
+#elif defined(O_BINARY)
+# define MY_O_BINARY        O_BINARY
+#else
+# define MY_O_BINARY        0
+#endif
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+/**
+ * Append output buffer.
+ */
+typedef struct KMKBUILTINAPPENDBUF
+{
+    /** Buffer pointer. */
+    char   *pszBuf;
+    /** The buffer allocation size. */
+    size_t  cbBuf;
+    /** The current buffer offset. */
+    size_t  offBuf;
+    /** Set if we ran out of memory. */
+    int     fOutOfMemory;
+} KMKBUILTINAPPENDBUF;
+
+
+/**
+ * Appends a substring to the output buffer.
+ *
+ * @param   pBuf        The output buffer.
+ * @param   pch         The substring pointer.
+ * @param   cch         The substring length.
+ */
+static void write_to_buf(KMKBUILTINAPPENDBUF *pBuf, const char *pch, size_t cch)
+{
+    size_t const offCur = pBuf->offBuf;
+    size_t       offNew = offCur + cch;
+
+    if (offNew >= pBuf->cbBuf)
+    {
+        size_t cbNew = offNew + 1 + 256;
+        void  *pvNew;
+        cbNew = (cbNew + 511) & ~(size_t)511;
+        pvNew = realloc(pBuf->pszBuf, cbNew);
+        if (pvNew)
+            pBuf->pszBuf = (char *)pvNew;
+        else
+        {
+            free(pBuf->pszBuf);
+            pBuf->pszBuf = NULL;
+            pBuf->cbBuf  = 0;
+            pBuf->offBuf = offNew;
+            pBuf->fOutOfMemory = 1;
+            return;
+        }
+    }
+
+    memcpy(&pBuf->pszBuf[offCur], pch, cch);
+    pBuf->pszBuf[offNew] = '\0';
+    pBuf->offBuf = offNew;
+}
+
+/**
+ * Adds a string to the output buffer.
+ *
+ * @param   pBuf        The output buffer.
+ * @param   psz         The string.
+ */
+static void string_to_buf(KMKBUILTINAPPENDBUF *pBuf, const char *psz)
+{
+    write_to_buf(pBuf, psz, strlen(psz));
+}
+
+
+/**
+ * Prints the usage and return 1.
+ */
+static int kmk_builtin_append_usage(const char *arg0, FILE *pf)
+{
+    fprintf(pf,
+            "usage: %s [-dcnNtv] file [string ...]\n"
+            "   or: %s --version\n"
+            "   or: %s --help\n"
+            "\n"
+            "Options:\n"
+            "  -d  Enclose the output in define ... endef, taking the name from\n"
+            "      the first argument following the file name.\n"
+            "  -c  Output the command for specified target(s). [builtin only]\n"
+            "  -i  look for --insert-command=trg and --insert-variable=var. [builtin only]\n"
+            "  -n  Insert a newline between the strings.\n"
+            "  -N  Suppress the trailing newline.\n"
+            "  -t  Truncate the file instead of appending\n"
+            "  -v  Output the value(s) for specified variable(s). [builtin only]\n"
+            ,
+            arg0, arg0, arg0);
+    return 1;
+}
+
+/**
+ * Appends text to a textfile, creating the textfile if necessary.
+ */
+int kmk_builtin_append(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx, struct child *pChild, pid_t *pPidSpawned)
+{
+#if defined(KBUILD_OS_WINDOWS) || defined(KBUILD_OS_OS2)
+    static const char s_szNewLine[] = "\r\n";
+#else
+    static const char s_szNewLine[] = "\n";
+#endif
+    KMKBUILTINAPPENDBUF OutBuf = { NULL, 0, 0, 0 };
+    const char *pszFilename;
+    int rc = 88;
+    int i;
+    int fFirst;
+    int fNewline = 0;
+    int fNoTrailingNewline = 0;
+    int fTruncate = 0;
+    int fDefine = 0;
+    int fVariables = 0;
+    int fCommands = 0;
+#ifndef KMK_BUILTIN_STANDALONE
+    int fLookForInserts = 0;
+#else
+    (void)pChild; (void)pPidSpawned;
+#endif
+
+    /*
+     * Parse options.
+     */
+    i = 1;
+    while (i < argc
+       &&  argv[i][0] == '-'
+       &&  argv[i][1] != '\0' /* '-' is a file */
+       &&  strchr("-cdinNtv", argv[i][1]) /* valid option char */
+       )
+    {
+        char *psz = &argv[i][1];
+        if (*psz != '-')
+        {
+            do
+            {
+                switch (*psz)
+                {
+                    case 'c':
+                        if (fVariables)
+                        {
+                            errx(pCtx, 1, "Option '-c' clashes with '-v'.");
+                            return kmk_builtin_append_usage(argv[0], stderr);
+                        }
+#ifndef KMK_BUILTIN_STANDALONE
+                        fCommands = 1;
+                        break;
+#else
+                        errx(pCtx, 1, "Option '-c' isn't supported in external mode.");
+                        return kmk_builtin_append_usage(argv[0], stderr);
+#endif
+                    case 'd':
+                        if (fVariables)
+                        {
+                            errx(pCtx, 1, "Option '-d' must come before '-v'!");
+                            return kmk_builtin_append_usage(argv[0], stderr);
+                        }
+                        fDefine = 1;
+                        break;
+                    case 'i':
+                        if (fVariables || fCommands)
+                        {
+                            errx(pCtx, 1, fVariables ? "Option '-i' clashes with '-v'." : "Option '-i' clashes with '-c'.");
+                            return kmk_builtin_append_usage(argv[0], stderr);
+                        }
+#ifndef KMK_BUILTIN_STANDALONE
+                        fLookForInserts = 1;
+                        break;
+#else
+                        errx(pCtx, 1, "Option '-C' isn't supported in external mode.");
+                        return kmk_builtin_append_usage(argv[0], stderr);
+#endif
+                    case 'n':
+                        fNewline = 1;
+                        break;
+                    case 'N':
+                        fNoTrailingNewline = 1;
+                        break;
+                    case 't':
+                        fTruncate = 1;
+                        break;
+                    case 'v':
+                        if (fCommands)
+                        {
+                            errx(pCtx, 1, "Option '-v' clashes with '-c'.");
+                            return kmk_builtin_append_usage(argv[0], stderr);
+                        }
+#ifndef KMK_BUILTIN_STANDALONE
+                        fVariables = 1;
+                        break;
+#else
+                        errx(pCtx, 1, "Option '-v' isn't supported in external mode.");
+                        return kmk_builtin_append_usage(argv[0], stderr);
+#endif
+                    default:
+                        errx(pCtx, 1, "Invalid option '%c'! (%s)", *psz, argv[i]);
+                        return kmk_builtin_append_usage(argv[0], stderr);
+                }
+            } while (*++psz);
+        }
+        else if (!strcmp(psz, "-help"))
+        {
+            kmk_builtin_append_usage(argv[0], stdout);
+            return 0;
+        }
+        else if (!strcmp(psz, "-version"))
+            return kbuild_version(argv[0]);
+        else
+            break;
+        i++;
+    }
+
+    /*
+     * Take down the filename.
+     */
+    if (i + fDefine < argc)
+        pszFilename = argv[i++];
+    else
+    {
+        if (i <= argc)
+            errx(pCtx, 1, "missing filename!");
+        else
+            errx(pCtx, 1, "missing define name!");
+        return kmk_builtin_append_usage(argv[0], stderr);
+    }
+
+    /* Start of no-return zone! */
+
+    /*
+     * Start define?
+     */
+    if (fDefine)
+    {
+        write_to_buf(&OutBuf, STR_TUPLE("define "));
+        string_to_buf(&OutBuf, argv[i]);
+        write_to_buf(&OutBuf, STR_TUPLE(s_szNewLine));
+        i++;
+    }
+
+    /*
+     * Append the argument strings to the file
+     */
+    fFirst = 1;
+    for (; i < argc; i++)
+    {
+        const char *psz = argv[i];
+        size_t cch = strlen(psz);
+        if (!fFirst)
+        {
+            if (fNewline)
+                write_to_buf(&OutBuf, STR_TUPLE(s_szNewLine));
+            else
+                write_to_buf(&OutBuf, STR_TUPLE(" "));
+        }
+#ifndef KMK_BUILTIN_STANDALONE
+        if (fCommands)
+        {
+            char *pszOldBuf;
+            unsigned cchOldBuf;
+            char *pchEnd;
+
+            install_variable_buffer(&pszOldBuf, &cchOldBuf);
+
+            pchEnd = func_commands(variable_buffer, &argv[i], "commands");
+            write_to_buf(&OutBuf, variable_buffer, pchEnd - variable_buffer);
+
+            restore_variable_buffer(pszOldBuf, cchOldBuf);
+        }
+        else if (fVariables)
+        {
+            struct variable *pVar = lookup_variable(psz, cch);
+            if (!pVar)
+                continue;
+            if (   !pVar->recursive
+                || IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR(pVar))
+                write_to_buf(&OutBuf, pVar->value, pVar->value_length);
+            else
+            {
+                char *pszExpanded = allocated_variable_expand(pVar->value);
+                string_to_buf(&OutBuf, pszExpanded);
+                free(pszExpanded);
+            }
+        }
+        else if (fLookForInserts && strncmp(psz, "--insert-command=", 17) == 0)
+        {
+            char *pszOldBuf;
+            unsigned cchOldBuf;
+            char *pchEnd;
+
+            install_variable_buffer(&pszOldBuf, &cchOldBuf);
+
+            psz += 17;
+            pchEnd = func_commands(variable_buffer, (char **)&psz, "commands");
+            write_to_buf(&OutBuf, variable_buffer, pchEnd - variable_buffer);
+
+            restore_variable_buffer(pszOldBuf, cchOldBuf);
+        }
+        else if (fLookForInserts && strncmp(psz, "--insert-variable=", 18) == 0)
+        {
+            struct variable *pVar = lookup_variable(psz + 18, cch);
+            if (!pVar)
+                continue;
+            if (   !pVar->recursive
+                || IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR(pVar))
+                write_to_buf(&OutBuf, pVar->value, pVar->value_length);
+            else
+            {
+                char *pszExpanded = allocated_variable_expand(pVar->value);
+                string_to_buf(&OutBuf, pszExpanded);
+                free(pszExpanded);
+            }
+        }
+        else
+#endif
+            write_to_buf(&OutBuf, psz, cch);
+        fFirst = 0;
+    }
+
+    /*
+     * End the define?
+     */
+    if (fDefine)
+    {
+        if (fFirst)
+            write_to_buf(&OutBuf, STR_TUPLE(s_szNewLine));
+        write_to_buf(&OutBuf, STR_TUPLE("endef"));
+    }
+
+    /*
+     * Add final newline (unless supressed) and check for errors.
+     */
+    if (!fNoTrailingNewline)
+        write_to_buf(&OutBuf, STR_TUPLE(s_szNewLine));
+
+    /*
+     * Write the buffer (unless we ran out of heap already).
+     */
+#if !defined(KMK_BUILTIN_STANDALONE) && defined(KBUILD_OS_WINDOWS) && defined(CONFIG_NEW_WIN_CHILDREN)
+    if (!OutBuf.fOutOfMemory)
+    {
+        rc = MkWinChildCreateAppend(pszFilename, &OutBuf.pszBuf, OutBuf.offBuf, fTruncate, pChild, pPidSpawned);
+        if (rc != 0)
+            rc = errx(pCtx, rc, "MkWinChildCreateAppend failed: %u", rc);
+        if (OutBuf.pszBuf)
+            free(OutBuf.pszBuf);
+    }
+    else
+#endif
+    if (!OutBuf.fOutOfMemory)
+    {
+        int fd = open(pszFilename,
+                      fTruncate ? O_WRONLY | O_TRUNC  | O_CREAT | MY_O_NOINHERIT | MY_O_BINARY
+                                : O_WRONLY | O_APPEND | O_CREAT | MY_O_NOINHERIT | MY_O_BINARY,
+                      0666);
+        if (fd >= 0)
+        {
+            ssize_t cbWritten = write(fd, OutBuf.pszBuf, OutBuf.offBuf);
+            if (cbWritten == (ssize_t)OutBuf.offBuf)
+                rc = 0;
+            else
+                rc = err(pCtx, 1, "error writing %lu bytes to '%s'", (unsigned long)OutBuf.offBuf, pszFilename);
+            if (close(fd) < 0)
+                rc = err(pCtx, 1, "error closing '%s'", pszFilename);
+        }
+        else
+            rc = err(pCtx, 1, "failed to open '%s'", pszFilename);
+        free(OutBuf.pszBuf);
+    }
+    else
+        rc = errx(pCtx, 1, "out of memory for output buffer! (%u needed)", OutBuf.offBuf + 1);
+    return rc;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_append", NULL };
+    return kmk_builtin_append(argc, argv, envp, &Ctx, NULL, NULL);
+}
+#endif
+
diff --git a/src/kmk/kmkbuiltin/cat.c b/src/kmk/kmkbuiltin/cat.c
new file mode 100644
index 0000000..7b52d0f
--- /dev/null
+++ b/src/kmk/kmkbuiltin/cat.c
@@ -0,0 +1,416 @@
+/*-
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kevin Fall.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char const copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+#endif
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)cat.c	8.2 (Berkeley) 4/27/95";
+#endif
+#endif /* not lint */
+#if 0
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/bin/cat/cat.c,v 1.32 2005/01/10 08:39:20 imp Exp $");
+#endif
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define FAKES_NO_GETOPT_H /* bird */
+#define NO_UDOM_SUPPORT /* kmk */
+#include "config.h"
+#ifndef _MSC_VER
+# include <sys/param.h>
+#endif
+#include <sys/stat.h>
+#ifndef NO_UDOM_SUPPORT
+# include <sys/socket.h>
+# include <sys/un.h>
+# include <errno.h>
+#endif
+
+#include <ctype.h>
+#include "err.h"
+#include <fcntl.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stddef.h>
+#include "getopt_r.h"
+#ifdef __sun__
+# include "solfakes.h"
+#endif
+#ifdef _MSC_VER
+# include "mscfakes.h"
+#endif
+#include "kmkbuiltin.h"
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct CATINSTANCE
+{
+    PKMKBUILTINCTX pCtx;
+    int bflag, eflag, nflag, sflag, tflag, vflag;
+    /*int rval;*/
+    const char *filename;
+    /* function level statics from raw_cat (needs freeing): */
+    size_t bsize;
+    char *buf;
+} CATINSTANCE;
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static struct option long_options[] =
+{
+    { "help",   					no_argument, 0, 261 },
+    { "version",   					no_argument, 0, 262 },
+    { 0, 0,	0, 0 },
+};
+
+
+static int usage(PKMKBUILTINCTX pCtx, int fIsErr);
+static int scanfiles(CATINSTANCE *pThis, char *argv[], int cooked);
+static int cook_cat(CATINSTANCE *pThis, FILE *);
+static int raw_cat(CATINSTANCE *pThis, int);
+
+#ifndef NO_UDOM_SUPPORT
+static int udom_open(PKMKBUILTINCTX pCtx, const char *path, int flags);
+#endif
+
+int
+kmk_builtin_cat(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+	struct getopt_state_r gos;
+	CATINSTANCE This;
+	int ch, rc;
+
+	/* kmk: reinitialize globals */
+	This.pCtx = pCtx;
+	This.bflag = This.eflag = This.nflag = This.sflag = This.tflag = This.vflag = 0;
+	This.filename = NULL;
+	This.bsize = 0;
+	This.buf = 0;
+
+	getopt_initialize_r(&gos, argc, argv, "benstuv", long_options, envp, pCtx);
+	while ((ch = getopt_long_r(&gos, NULL)) != -1)
+		switch (ch) {
+		case 'b':
+			This.bflag = This.nflag = 1;	/* -b implies -n */
+			break;
+		case 'e':
+			This.eflag = This.vflag = 1;	/* -e implies -v */
+			break;
+		case 'n':
+			This.nflag = 1;
+			break;
+		case 's':
+			This.sflag = 1;
+			break;
+		case 't':
+			This.tflag = This.vflag = 1;	/* -t implies -v */
+			break;
+		case 'u':
+#ifdef KMK_BUILTIN_STANDALONE /* don't allow messing with stdout */
+			setbuf(stdout, NULL);
+#endif
+			break;
+		case 'v':
+			This.vflag = 1;
+			break;
+		case 261:
+			usage(pCtx, 0);
+			return 0;
+		case 262:
+			return kbuild_version(argv[0]);
+		default:
+			return usage(pCtx, 1);
+		}
+	argv += gos.optind;
+
+	if (This.bflag || This.eflag || This.nflag || This.sflag || This.tflag || This.vflag)
+		rc = scanfiles(&This, argv, 1);
+	else
+		rc = scanfiles(&This, argv, 0);
+	if (This.buf) {
+		free(This.buf);
+		This.buf = NULL;
+	}
+#ifdef KMK_BUILTIN_STANDALONE /* don't allow messing with stdout */
+	if (fclose(stdout))
+		return err(pCtx, 1, "stdout");
+#endif
+	return rc;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+	KMKBUILTINCTX Ctx = { "kmk_cat", NULL };
+	setlocale(LC_CTYPE, "");
+	return kmk_builtin_cat(argc, argv, envp, &Ctx);
+}
+#endif
+
+static int
+usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+	kmk_builtin_ctx_printf(pCtx, fIsErr,
+			       "usage: %s [-benstuv] [file ...]\n"
+			       "   or: %s --help\n"
+			       "   or: %s --version\n",
+			       pCtx->pszProgName, pCtx->pszProgName,
+			       pCtx->pszProgName);
+	return 1;
+}
+
+static int
+scanfiles(CATINSTANCE *pThis, char *argv[], int cooked)
+{
+	int i = 0;
+	char *path;
+	FILE *fp;
+	int rc2 = 0;
+	int rc = 0;
+
+	while ((path = argv[i]) != NULL || i == 0) {
+		int fd;
+
+		if (path == NULL || strcmp(path, "-") == 0) {
+			pThis->filename = "stdin";
+			fd = STDIN_FILENO;
+		} else {
+			pThis->filename = path;
+			fd = open(path, O_RDONLY | KMK_OPEN_NO_INHERIT);
+#ifndef NO_UDOM_SUPPORT
+			if (fd < 0 && errno == EOPNOTSUPP)
+				fd = udom_open(pThis, path, O_RDONLY);
+#endif
+		}
+		if (fd < 0) {
+			warn(pThis->pCtx, "%s", path);
+			rc2 = 1; /* non fatal */
+		} else if (cooked) {
+			if (fd == STDIN_FILENO)
+				rc = cook_cat(pThis, stdin);
+			else {
+				fp = fdopen(fd, "r");
+				rc = cook_cat(pThis, fp);
+				fclose(fp);
+			}
+		} else {
+			rc = raw_cat(pThis, fd);
+			if (fd != STDIN_FILENO)
+				close(fd);
+		}
+		if (rc || path == NULL)
+			break;
+		++i;
+	}
+	return !rc ? rc2 : rc;
+}
+
+static int
+cat_putchar(PKMKBUILTINCTX pCtx, char ch)
+{
+#ifndef KMK_BUILTIN_STANDALONE
+	if (pCtx->pOut) {
+		output_write_text(pCtx->pOut, 0, &ch, 1);
+		return 0;
+	}
+#endif
+	return putchar(ch);
+}
+
+static int
+cook_cat(CATINSTANCE *pThis, FILE *fp)
+{
+	int ch, gobble, line, prev;
+	int rc = 0;
+
+	/* Reset EOF condition on stdin. */
+	if (fp == stdin && feof(stdin))
+		clearerr(stdin);
+
+	line = gobble = 0;
+	for (prev = '\n'; (ch = getc(fp)) != EOF; prev = ch) {
+		if (prev == '\n') {
+			if (pThis->sflag) {
+				if (ch == '\n') {
+					if (gobble)
+						continue;
+					gobble = 1;
+				} else
+					gobble = 0;
+			}
+			if (pThis->nflag && (!pThis->bflag || ch != '\n')) {
+				kmk_builtin_ctx_printf(pThis->pCtx, 0, "%6d\t", ++line);
+				if (ferror(stdout))
+					break;
+			}
+		}
+		if (ch == '\n') {
+			if (pThis->eflag && cat_putchar(pThis->pCtx, '$') == EOF)
+				break;
+		} else if (ch == '\t') {
+			if (pThis->tflag) {
+				if (cat_putchar(pThis->pCtx, '^') == EOF || cat_putchar(pThis->pCtx, 'I') == EOF)
+					break;
+				continue;
+			}
+		} else if (pThis->vflag) {
+			if (!isascii(ch) && !isprint(ch)) {
+				if (cat_putchar(pThis->pCtx, 'M') == EOF || cat_putchar(pThis->pCtx, '-') == EOF)
+					break;
+				ch = toascii(ch);
+			}
+			if (iscntrl(ch)) {
+				if (cat_putchar(pThis->pCtx, '^') == EOF ||
+				    cat_putchar(pThis->pCtx, ch == '\177' ? '?' :
+				    ch | 0100) == EOF)
+					break;
+				continue;
+			}
+		}
+		if (cat_putchar(pThis->pCtx, ch) == EOF)
+			break;
+	}
+	if (ferror(fp)) {
+		warn(pThis->pCtx, "%s", pThis->filename);
+		rc = 1;
+		clearerr(fp);
+	}
+	if (ferror(stdout))
+		return err(pThis->pCtx, 1, "stdout");
+	return rc;
+}
+
+static int
+raw_cat(CATINSTANCE *pThis, int rfd)
+{
+	int off, wfd = fileno(stdout);
+	ssize_t nr, nw;
+
+	wfd = fileno(stdout);
+	if (pThis->buf == NULL) {
+		struct stat sbuf;
+		if (fstat(wfd, &sbuf))
+			return err(pThis->pCtx, 1, "%s", pThis->filename);
+#ifdef KBUILD_OS_WINDOWS
+		pThis->bsize = 16384;
+#else
+		pThis->bsize = MAX(sbuf.st_blksize, 1024);
+#endif
+		if ((pThis->buf = malloc(pThis->bsize)) == NULL)
+			return err(pThis->pCtx, 1, "buffer");
+	}
+	while ((nr = read(rfd, pThis->buf, pThis->bsize)) > 0)
+		for (off = 0; nr; nr -= nw, off += nw) {
+#ifndef KMK_BUILTIN_STANDALONE
+			if (pThis->pCtx->pOut)
+				nw = output_write_text(pThis->pCtx->pOut, 0, pThis->buf + off, nr);
+			else
+#endif
+				nw = write(wfd, pThis->buf + off, (size_t)nr);
+			if (nw < 0)
+				return err(pThis->pCtx, 1, "stdout");
+		}
+	if (nr < 0) {
+		warn(pThis->pCtx, "%s", pThis->filename);
+		return 1;
+	}
+	return 0;
+}
+
+#ifndef NO_UDOM_SUPPORT
+
+static int
+udom_open(CATINSTANCE *pThis, const char *path, int flags)
+{
+	struct sockaddr_un sou;
+	int fd;
+	unsigned int len;
+
+	bzero(&sou, sizeof(sou));
+
+	/*
+	 * Construct the unix domain socket address and attempt to connect
+	 */
+	fd = socket(AF_UNIX, SOCK_STREAM, 0);
+	if (fd >= 0) {
+		sou.sun_family = AF_UNIX;
+		if ((len = strlcpy(sou.sun_path, path,
+		    sizeof(sou.sun_path))) >= sizeof(sou.sun_path)) {
+			errno = ENAMETOOLONG;
+			return (-1);
+		}
+		len = offsetof(struct sockaddr_un, sun_path[len+1]);
+
+		if (connect(fd, (void *)&sou, len) < 0) {
+			close(fd);
+			fd = -1;
+		}
+	}
+
+	/*
+	 * handle the open flags by shutting down appropriate directions
+	 */
+	if (fd >= 0) {
+		switch(flags & O_ACCMODE) {
+		case O_RDONLY:
+			if (shutdown(fd, SHUT_WR) == -1)
+				warn(pThis->pCtx, NULL);
+			break;
+		case O_WRONLY:
+			if (shutdown(fd, SHUT_RD) == -1)
+				warn(pThis->pCtx, NULL);
+			break;
+		default:
+			break;
+		}
+	}
+	return(fd);
+}
+
+#endif
+
diff --git a/src/kmk/kmkbuiltin/chmod.c b/src/kmk/kmkbuiltin/chmod.c
new file mode 100644
index 0000000..0061924
--- /dev/null
+++ b/src/kmk/kmkbuiltin/chmod.c
@@ -0,0 +1,288 @@
+/*-
+ * Copyright (c) 1989, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char const copyright[] =
+"@(#) Copyright (c) 1989, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)chmod.c	8.8 (Berkeley) 4/1/94";
+#endif /* not lint */
+#endif
+/*#include <sys/cdefs.h> */
+/*__FBSDID("$FreeBSD: src/bin/chmod/chmod.c,v 1.33 2005/01/10 08:39:20 imp Exp $");*/
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define FAKES_NO_GETOPT_H /* bird */
+#include "config.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "err.h"
+#include <errno.h>
+#include "fts.h"
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifndef _MSC_VER
+# include <unistd.h>
+#else
+# include "mscfakes.h"
+#endif
+#ifdef __sun__
+# include "solfakes.h"
+#endif
+#ifdef __HAIKU__
+# include "haikufakes.h"
+#endif
+#include "getopt_r.h"
+#include "kmkbuiltin.h"
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static struct option long_options[] =
+{
+    { "help",   					no_argument, 0, 261 },
+    { "version",   					no_argument, 0, 262 },
+    { 0, 0,	0, 0 },
+};
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+extern void * bsd_setmode(const char *p);
+extern mode_t bsd_getmode(const void *bbox, mode_t omode);
+extern void bsd_strmode(mode_t mode, char *p);
+
+#if (defined(__APPLE__) && !defined(_DARWIN_FEATURE_UNIX_CONFORMANCE)) || defined(__OpenBSD__)
+extern int lchmod(const char *, mode_t);
+#endif
+
+static int usage(PKMKBUILTINCTX pCtx, int is_err);
+
+
+int
+kmk_builtin_chmod(int argc, char *argv[], char **envp, PKMKBUILTINCTX pCtx)
+{
+	struct getopt_state_r gos;
+	FTS *ftsp;
+	FTSENT *p;
+	mode_t *set;
+	int Hflag, Lflag, Rflag, ch, fflag, fts_options, hflag, rval;
+	int vflag;
+	char *mode;
+	mode_t newmode;
+	int (*change_mode)(const char *, mode_t);
+
+	set = NULL;
+	Hflag = Lflag = Rflag = fflag = hflag = vflag = 0;
+
+	getopt_initialize_r(&gos, argc, argv, "HLPRXfghorstuvwx", long_options, envp, pCtx);
+	while ((ch = getopt_long_r(&gos, NULL)) != -1)
+		switch (ch) {
+		case 'H':
+			Hflag = 1;
+			Lflag = 0;
+			break;
+		case 'L':
+			Lflag = 1;
+			Hflag = 0;
+			break;
+		case 'P':
+			Hflag = Lflag = 0;
+			break;
+		case 'R':
+			Rflag = 1;
+			break;
+		case 'f':
+			fflag = 1;
+			break;
+		case 'h':
+			/*
+			 * In System V (and probably POSIX.2) the -h option
+			 * causes chmod to change the mode of the symbolic
+			 * link.  4.4BSD's symbolic links didn't have modes,
+			 * so it was an undocumented noop.  In FreeBSD 3.0,
+			 * lchmod(2) is introduced and this option does real
+			 * work.
+			 */
+			hflag = 1;
+			break;
+		/*
+		 * XXX
+		 * "-[rwx]" are valid mode commands.  If they are the entire
+		 * argument, getopt has moved past them, so decrement optind.
+		 * Regardless, we're done argument processing.
+		 */
+		case 'g': case 'o': case 'r': case 's':
+		case 't': case 'u': case 'w': case 'X': case 'x':
+			if (argv[gos.optind - 1][0] == '-' &&
+			    argv[gos.optind - 1][1] == ch &&
+			    argv[gos.optind - 1][2] == '\0')
+				--gos.optind;
+			goto done;
+		case 'v':
+			vflag++;
+			break;
+		case 261:
+			usage(pCtx, 0);
+			return 0;
+		case 262:
+			return kbuild_version(argv[0]);
+		case '?':
+		default:
+			return usage(pCtx, 1);
+		}
+done:	argv += gos.optind;
+	argc -= gos.optind;
+
+	if (argc < 2)
+		return usage(pCtx, 1);
+
+	if (Rflag) {
+		fts_options = FTS_PHYSICAL;
+		if (hflag)
+			return errx(pCtx, 1,
+		"the -R and -h options may not be specified together.");
+		if (Hflag)
+			fts_options |= FTS_COMFOLLOW;
+		if (Lflag) {
+			fts_options &= ~FTS_PHYSICAL;
+			fts_options |= FTS_LOGICAL;
+		}
+	} else
+		fts_options = hflag ? FTS_PHYSICAL : FTS_LOGICAL;
+#ifndef KMK_BUILTIN_STANDALONE
+	fts_options |= FTS_NOCHDIR; /* Don't change the CWD while inside kmk. */
+#endif
+
+	if (hflag)
+		change_mode = lchmod;
+	else
+		change_mode = chmod;
+
+	mode = *argv;
+	if ((set = bsd_setmode(mode)) == NULL)
+		return errx(pCtx, 1, "invalid file mode: %s", mode);
+
+	if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL)
+		return err(pCtx, 1, "fts_open");
+	for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
+		switch (p->fts_info) {
+		case FTS_D:			/* Change it at FTS_DP. */
+			if (!Rflag)
+				fts_set(ftsp, p, FTS_SKIP);
+			continue;
+		case FTS_DNR:			/* Warn, chmod, continue. */
+			warnx(pCtx, "fts: %s: %s", p->fts_path, strerror(p->fts_errno));
+			rval = 1;
+			break;
+		case FTS_ERR:			/* Warn, continue. */
+		case FTS_NS:
+			warnx(pCtx, "fts: %s: %s", p->fts_path, strerror(p->fts_errno));
+			rval = 1;
+			continue;
+		case FTS_SL:			/* Ignore. */
+		case FTS_SLNONE:
+			/*
+			 * The only symlinks that end up here are ones that
+			 * don't point to anything and ones that we found
+			 * doing a physical walk.
+			 */
+			if (!hflag)
+				continue;
+			/* else */
+			/* FALLTHROUGH */
+		default:
+			break;
+		}
+		newmode = bsd_getmode(set, p->fts_statp->st_mode);
+		if ((newmode & ALLPERMS) == (p->fts_statp->st_mode & ALLPERMS))
+			continue;
+		if ((*change_mode)(p->fts_accpath, newmode) && !fflag) {
+			warn(pCtx, "%schmod: %s", hflag ? "l" : "", p->fts_path);
+			rval = 1;
+		} else {
+			if (vflag) {
+				kmk_builtin_ctx_printf(pCtx, 0, "%s", p->fts_path);
+
+				if (vflag > 1) {
+					char m1[12], m2[12];
+
+					bsd_strmode(p->fts_statp->st_mode, m1);
+					bsd_strmode((p->fts_statp->st_mode &
+					    S_IFMT) | newmode, m2);
+
+					kmk_builtin_ctx_printf(pCtx, 0, ": 0%o [%s] -> 0%o [%s]",
+					    (unsigned int)p->fts_statp->st_mode, m1,
+					    (unsigned int)((p->fts_statp->st_mode & S_IFMT) | newmode), m2);
+				}
+				kmk_builtin_ctx_printf(pCtx, 0, "\n");
+			}
+
+		}
+	}
+	if (errno)
+		rval = err(pCtx, 1, "fts_read");
+	free(set);
+	fts_close(ftsp);
+	return rval;
+}
+
+int
+usage(PKMKBUILTINCTX pCtx, int is_err)
+{
+	kmk_builtin_ctx_printf(pCtx, is_err,
+	    "usage: %s [-fhv] [-R [-H | -L | -P]] mode file ...\n"
+	    "   or: %s --version\n"
+	    "   or: %s --help\n",
+	    pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName);
+
+	return 1;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+mode_t g_fUMask;
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_chmod", NULL };
+    umask(g_fUMask = umask(0077));
+    return kmk_builtin_chmod(argc, argv, envp, &Ctx);
+}
+#endif
+
diff --git a/src/kmk/kmkbuiltin/cmp.c b/src/kmk/kmkbuiltin/cmp.c
new file mode 100644
index 0000000..238d044
--- /dev/null
+++ b/src/kmk/kmkbuiltin/cmp.c
@@ -0,0 +1,153 @@
+/*	$NetBSD: cmp.c,v 1.15 2006/01/19 20:44:57 garbled Exp $	*/
+
+/*
+ * Copyright (c) 1987, 1990, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*__COPYRIGHT("@(#) Copyright (c) 1987, 1990, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n");
+static char sccsid[] = "@(#)cmp.c	8.3 (Berkeley) 4/2/94";
+__RCSID("$NetBSD: cmp.c,v 1.15 2006/01/19 20:44:57 garbled Exp $"); */
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define FAKES_NO_GETOPT_H /* bird */
+#ifdef _MSC_VER
+# define MSC_DO_64_BIT_IO /* for correct off_t */
+#endif
+#include "config.h"
+#include <sys/types.h>
+#include "err.h"
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <locale.h>
+#ifndef _MSC_VER
+# include <unistd.h>
+#else
+# include "mscfakes.h"
+#endif
+#include "getopt_r.h"
+#include "kmkbuiltin.h"
+#include "cmp_extern.h"
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static const struct option long_options[] =
+{
+    { "help",   					no_argument, 0, 261 },
+    { "version",   					no_argument, 0, 262 },
+    { 0, 0,	0, 0 },
+};
+
+
+static int usage(PKMKBUILTINCTX pCtx, int is_err);
+
+int
+kmk_builtin_cmp(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+    struct getopt_state_r gos;
+    off_t skip1 = 0, skip2 = 0;
+    int lflag = 0, sflag = 0;
+    int ch;
+    char *file1, *file2;
+
+    getopt_initialize_r(&gos, argc, argv, "ls", long_options, envp, pCtx);
+    while ((ch = getopt_long_r(&gos, NULL)) != -1)
+    {
+        switch (ch)
+        {
+            case 'l':		/* print all differences */
+                lflag = 1;
+                break;
+            case 's':		/* silent run */
+                sflag = 1;
+                break;
+            case 261:
+                usage(pCtx, 0);
+                return 0;
+            case 262:
+                return kbuild_version(argv[0]);
+            case '?':
+            default:
+                return usage(pCtx, 1);
+        }
+    }
+    argv += gos.optind;
+    argc -= gos.optind;
+
+    if (argc < 2 || argc > 4)
+        return usage(pCtx, 1);
+
+    file1 = argv[0];
+    file2 = argv[1];
+
+    if (argc > 2)
+    {
+        char *ep;
+
+        errno = 0;
+        skip1 = strtoll(argv[2], &ep, 0);
+        if (errno || ep == argv[2])
+            return errx(pCtx, ERR_EXIT, "strtoll(%s,,) failed", argv[2]);
+
+        if (argc == 4)
+        {
+            skip2 = strtoll(argv[3], &ep, 0);
+            if (errno || ep == argv[3])
+                return errx(pCtx, ERR_EXIT, "strtoll(%s,,) failed", argv[3]);
+	}
+    }
+
+    return cmp_file_and_file_ex(pCtx, file1, skip1, file2, skip2, sflag, lflag, 0);
+}
+
+static int
+usage(PKMKBUILTINCTX pCtx, int is_err)
+{
+    kmk_builtin_ctx_printf(pCtx, is_err,
+                           "usage: %s [-l | -s] file1 file2 [skip1 [skip2]]\n"
+                           "   or: %s --help\n"
+                           "   or: %s --version\n",
+                           pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName);
+    return ERR_EXIT;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_cmp", NULL };
+    setlocale(LC_ALL, "");
+    return kmk_builtin_cmp(argc, argv, envp, &Ctx);
+}
+#endif
+
diff --git a/src/kmk/kmkbuiltin/cmp_extern.h b/src/kmk/kmkbuiltin/cmp_extern.h
new file mode 100644
index 0000000..94e69d3
--- /dev/null
+++ b/src/kmk/kmkbuiltin/cmp_extern.h
@@ -0,0 +1,49 @@
+/*	$NetBSD: extern.h,v 1.7 2007/08/21 14:09:53 christos Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)extern.h	8.3 (Berkeley) 4/2/94
+ */
+
+#define OK_EXIT		0
+#define DIFF_EXIT	1
+#define ERR_EXIT	2	/* error exit code */
+
+int cmp_file_and_file(PKMKBUILTINCTX pCtx, const char *file1, const char *file2, int sflag, int lflag, int special);
+int cmp_file_and_file_ex(PKMKBUILTINCTX pCtx, const char *file1, off_t skip1,
+                         const char *file2, off_t skip2, int sflag, int lflag, int special);
+int cmp_fd_and_file(PKMKBUILTINCTX pCtx, int fd1, const char *file1,
+                    const char *file2, int sflag, int lflag, int special);
+int cmp_fd_and_file_ex(PKMKBUILTINCTX pCtx, int fd1, const char *file1, off_t skip1,
+                       const char *file2, off_t skip2, int sflag, int lflag, int special);
+int cmp_fd_and_fd(PKMKBUILTINCTX pCtx, int fd1, const char *file1,
+                  int fd2, const char *file2, int sflag, int lflag, int special);
+int cmp_fd_and_fd_ex(PKMKBUILTINCTX pCtx, int fd1, const char *file1, off_t skip1,
+                     int fd2, const char *file2, off_t skip2,  int sflag, int lflag, int special);
+
diff --git a/src/kmk/kmkbuiltin/cmp_util.c b/src/kmk/kmkbuiltin/cmp_util.c
new file mode 100644
index 0000000..0228f38
--- /dev/null
+++ b/src/kmk/kmkbuiltin/cmp_util.c
@@ -0,0 +1,562 @@
+/*	$NetBSD: cmp.c,v 1.15 2006/01/19 20:44:57 garbled Exp $	*/
+/*	$NetBSD: misc.c,v 1.11 2007/08/22 16:59:19 christos Exp $	*/
+/*	$NetBSD: regular.c,v 1.20 2006/06/03 21:47:55 christos Exp $	*/
+/*	$NetBSD: special.c,v 1.12 2007/08/21 14:09:54 christos Exp $	*/
+
+/*
+ * Copyright (c) 1987, 1990, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*__COPYRIGHT("@(#) Copyright (c) 1987, 1990, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n");*/
+
+#ifdef _MSC_VER
+# define MSC_DO_64_BIT_IO
+#endif
+#include "config.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#if defined(__FreeBSD__) || defined(__NetBSD__) /** @todo more mmap capable OSes. */
+# define CMP_USE_MMAP
+# include <sys/param.h>
+# include <sys/mman.h>
+#endif
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifndef _MSC_VER
+# include <unistd.h>
+# ifndef O_BINARY
+#  define O_BINARY 0
+# endif
+#else
+# include "mscfakes.h"
+#endif
+#include "err.h"
+
+#include "cmp_extern.h"
+
+
+static int
+errmsg(PKMKBUILTINCTX pCtx, const char *file, off_t byte, off_t line, int lflag)
+{
+    if (lflag)
+#ifdef _MSC_VER
+        return err(pCtx, ERR_EXIT, "%s: char %I64d, line %lld", file, (__int64)byte, (long long)line);
+#else
+        return err(pCtx, ERR_EXIT, "%s: char %lld, line %lld", file, (long long)byte, (long long)line);
+#endif
+    return err(pCtx, ERR_EXIT, "%s", file);
+}
+
+
+static int
+eofmsg(PKMKBUILTINCTX pCtx, const char *file, off_t byte, off_t line, int sflag, int lflag)
+{
+    if (!sflag)
+    {
+        if (!lflag)
+            warnx(pCtx, "EOF on %s", file);
+        else
+        {
+#ifdef _MSC_VER
+            if (line > 0)
+                warnx(pCtx, "EOF on %s: char %I64d, line %I64d", file, (__int64)byte, (__int64)line);
+            else
+                warnx(pCtx, "EOF on %s: char %I64d", file, (__int64)byte);
+#else
+            if (line > 0)
+                warnx(pCtx, "EOF on %s: char %lld, line %lld", file, (long long)byte, (long long)line);
+            else
+                warnx(pCtx, "EOF on %s: char %lld", file, (long long)byte);
+#endif
+        }
+    }
+    return DIFF_EXIT;
+}
+
+
+static int
+diffmsg(PKMKBUILTINCTX pCtx, const char *file1, const char *file2, off_t byte, off_t line, int sflag)
+{
+    if (!sflag)
+#ifdef _MSC_VER
+        kmk_builtin_ctx_printf(pCtx, 0, "%s %s differ: char %I64d, line %I64d\n",
+               file1, file2, (__int64)byte, (__int64)line);
+#else
+        kmk_builtin_ctx_printf(pCtx, 0, "%s %s differ: char %lld, line %lld\n",
+               file1, file2, (long long)byte, (long long)line);
+#endif
+    return DIFF_EXIT;
+}
+
+
+/**
+ * Compares two files, where one or both are non-regular ones.
+ */
+static int
+c_special(PKMKBUILTINCTX pCtx, int fd1, const char *file1, off_t skip1,
+          int fd2, const char *file2, off_t skip2,
+          int lflag, int sflag)
+{
+    int fd1dup, fd2dup;
+    FILE *fp1;
+    int rc;
+
+    /* duplicate because fdopen+fclose will otherwise close the handle. */
+    fd1dup = dup(fd1);
+    if (fd1 < 0)
+        return err(pCtx, ERR_EXIT, "%s", file1);
+    fp1 = fdopen(fd1dup, "rb");
+    if (!fp1)
+        fp1 = fdopen(fd1dup, "r");
+    if (!fp1)
+    {
+        err(pCtx, ERR_EXIT, "%s", file1);
+        close(fd1dup);
+        return ERR_EXIT;
+    }
+
+    fd2dup = dup(fd2);
+    if (fd2dup >= 0)
+    {
+        FILE *fp2 = fdopen(fd2dup, "rb");
+        if (!fp2)
+            fp2 = fdopen(fd2dup, "r");
+        if (fp2)
+        {
+            off_t byte;
+            off_t line;
+            int ch1 = 0;
+            int ch2 = 0;
+
+            /* skipping ahead */
+            rc = OK_EXIT;
+            for (byte = line = 1; skip1--; byte++)
+            {
+                ch1 = getc(fp1);
+                if (ch1 == EOF)
+                    break;
+                if (ch1 == '\n')
+                    line++;
+            }
+            for (byte = line = 1; skip2--; byte++)
+            {
+                ch2 = getc(fp2);
+                if (ch2 == EOF)
+                    break;
+                if (ch2 == '\n')
+                    line++;
+            }
+            if (ch2 != EOF && ch1 != EOF)
+            {
+                /* compare byte by byte */
+                for (byte = line = 1;; ++byte)
+                {
+                    ch1 = getc(fp1);
+                    ch2 = getc(fp2);
+                    if (ch1 == EOF || ch2 == EOF)
+                        break;
+                    if (ch1 != ch2)
+                    {
+                        if (!lflag)
+                        {
+                            rc = diffmsg(pCtx, file1, file2, byte, line, sflag);
+                            break;
+                        }
+                        rc = DIFF_EXIT;
+#ifdef _MSC_VER
+                        kmk_builtin_ctx_printf(pCtx, 0, "%6i64d %3o %3o\n", (__int64)byte, ch1, ch2);
+#else
+                        kmk_builtin_ctx_printf(pCtx, 0, "%6lld %3o %3o\n", (long long)byte, ch1, ch2);
+#endif
+                    }
+                    if (ch1 == '\n')
+                        ++line;
+                }
+            }
+
+            /* Check for errors and length differences (EOF). */
+            if (ferror(fp1) && rc != ERR_EXIT)
+                rc = errmsg(pCtx, file1, byte, line, lflag);
+            if (ferror(fp2) && rc != ERR_EXIT)
+                rc = errmsg(pCtx, file2, byte, line, lflag);
+            if (rc == OK_EXIT)
+            {
+                if (feof(fp1))
+                {
+                    if (!feof(fp2))
+                        rc = eofmsg(pCtx, file1, byte, line, sflag, lflag);
+                }
+                else if (feof(fp2))
+                    rc = eofmsg(pCtx, file2, byte, line, sflag, lflag);
+            }
+
+            fclose(fp2);
+        }
+        else
+        {
+            rc = err(pCtx, ERR_EXIT, "%s", file2);
+            close(fd2dup);
+        }
+    }
+    else
+        rc = err(pCtx, ERR_EXIT, "%s", file2);
+
+    fclose(fp1);
+    return rc;
+}
+
+
+#ifdef CMP_USE_MMAP
+/**
+ * Compare two files using mmap.
+ */
+static int
+c_regular(PKMKBUILTINCTX pCtx, int fd1, const char *file1, off_t skip1, off_t len1,
+          int fd2, const char *file2, off_t skip2, off_t len2, int sflag, int lflag)
+{
+    unsigned char ch, *p1, *p2, *b1, *b2;
+    off_t byte, length, line;
+    int dfound;
+    size_t blk_sz, blk_cnt;
+
+    if (sflag && len1 != len2)
+        return DIFF_EXIT;
+
+    if (skip1 > len1)
+        return eofmsg(pCtx, file1, len1 + 1, 0, sflag, lflag);
+    len1 -= skip1;
+    if (skip2 > len2)
+        return eofmsg(pCtx, file2, len2 + 1, 0, sflag, lflag);
+    len2 -= skip2;
+
+    byte = line = 1;
+    dfound = 0;
+    length = len1 <= len2 ? len1 : len2;
+    for (blk_sz = 1024 * 1024; length != 0; length -= blk_sz)
+    {
+        if (blk_sz > length)
+            blk_sz = length;
+        b1 = p1 = mmap(NULL, blk_sz, PROT_READ, MAP_FILE | MAP_SHARED, fd1, skip1);
+        if (p1 == MAP_FAILED)
+            goto l_mmap_failed;
+
+        b2 = p2 = mmap(NULL, blk_sz, PROT_READ, MAP_FILE | MAP_SHARED, fd2, skip2);
+        if (p2 == MAP_FAILED)
+        {
+            munmap(p1, blk_sz);
+            goto l_mmap_failed;
+        }
+
+        blk_cnt = blk_sz;
+        for (; blk_cnt--; ++p1, ++p2, ++byte)
+        {
+            if ((ch = *p1) != *p2)
+            {
+                if (!lflag)
+                {
+                    munmap(b1, blk_sz);
+                    munmap(b2, blk_sz);
+                    return diffmsg(pCtx, file1, file2, byte, line, sflag);
+                }
+                dfound = 1;
+#ifdef _MSC_VER
+                kmk_builtin_ctx_printf(pCtx, 0, "%6I64d %3o %3o\n", (__int64)byte, ch, *p2);
+#else
+                kmk_builtin_ctx_printf(pCtx, 0, "%6lld %3o %3o\n", (long long)byte, ch, *p2);
+#endif
+            }
+            if (ch == '\n')
+                ++line;
+        }
+        munmap(p1 - blk_sz, blk_sz);
+        munmap(p2 - blk_sz, blk_sz);
+        skip1 += blk_sz;
+        skip2 += blk_sz;
+    }
+
+    if (len1 != len2)
+        return eofmsg(pCtx, len1 > len2 ? file2 : file1, byte, line, sflag, lflag);
+    if (dfound)
+        return DIFF_EXIT;
+    return OK_EXIT;
+
+l_mmap_failed:
+    return c_special(pCtx, fd1, file1, skip1, fd2, file2, skip2, lflag, sflag);
+}
+
+#else /* non-mmap c_regular: */
+
+/**
+ * Compare two files without mmaping them.
+ */
+static int
+c_regular(PKMKBUILTINCTX pCtx, int fd1, const char *file1, off_t skip1, off_t len1,
+          int fd2, const char *file2, off_t skip2, off_t len2, int sflag, int lflag)
+{
+    unsigned char ch, *p1, *p2, *b1 = 0, *b2 = 0;
+    off_t byte, length, line, bytes_read;
+    int dfound;
+    size_t blk_sz, blk_cnt;
+
+    if (sflag && len1 != len2)
+        return DIFF_EXIT;
+
+    if (skip1 > len1)
+        return eofmsg(pCtx, file1, len1 + 1, 0, sflag, lflag);
+    len1 -= skip1;
+    if (skip2 > len2)
+        return eofmsg(pCtx, file2, len2 + 1, 0, sflag, lflag);
+    len2 -= skip2;
+
+    if (skip1 && lseek(fd1, skip1, SEEK_SET) < 0)
+        goto l_special;
+    if (skip2 && lseek(fd2, skip2, SEEK_SET) < 0)
+    {
+        if (skip1 && lseek(fd1, 0, SEEK_SET) < 0)
+            return err(pCtx, 1, "seek failed");
+        goto l_special;
+    }
+
+#define CMP_BUF_SIZE (128*1024)
+
+    b1 = malloc(CMP_BUF_SIZE);
+    b2 = malloc(CMP_BUF_SIZE);
+    if (!b1 || !b2)
+        goto l_malloc_failed;
+
+    byte = line = 1;
+    dfound = 0;
+    length = len1;
+    if (length > len2)
+        length = len2;
+    for (blk_sz = CMP_BUF_SIZE; length != 0; length -= blk_sz)
+    {
+        if ((off_t)blk_sz > length)
+            blk_sz = (size_t)length;
+
+        bytes_read = read(fd1, b1, blk_sz);
+        if (bytes_read != (off_t)blk_sz)
+            goto l_read_error;
+
+        bytes_read = read(fd2, b2, blk_sz);
+        if (bytes_read != (off_t)blk_sz)
+            goto l_read_error;
+
+        blk_cnt = blk_sz;
+        p1 = b1;
+        p2 = b2;
+        for (; blk_cnt--; ++p1, ++p2, ++byte)
+        {
+            if ((ch = *p1) != *p2)
+            {
+                if (!lflag)
+                {
+                    free(b1);
+                    free(b2);
+                    return diffmsg(pCtx, file1, file2, byte, line, sflag);
+                }
+                dfound = 1;
+#ifdef _MSC_VER
+                kmk_builtin_ctx_printf(pCtx, 0, "%6I64d %3o %3o\n", (__int64)byte, ch, *p2);
+#else
+                kmk_builtin_ctx_printf(pCtx, 0, "%6lld %3o %3o\n", (long long)byte, ch, *p2);
+#endif
+            }
+            if (ch == '\n')
+                ++line;
+        }
+        skip1 += blk_sz;
+        skip2 += blk_sz;
+    }
+
+    if (len1 != len2)
+        return eofmsg(pCtx, len1 > len2 ? file2 : file1, byte, line, sflag, lflag);
+    if (dfound)
+        return DIFF_EXIT;
+    return OK_EXIT;
+
+l_read_error:
+    if (    lseek(fd1, 0, SEEK_SET) < 0
+        ||  lseek(fd2, 0, SEEK_SET) < 0)
+    {
+        err(pCtx, 1, "seek failed");
+        free(b1);
+        free(b2);
+        return 1;
+    }
+l_malloc_failed:
+    free(b1);
+    free(b2);
+l_special:
+    return c_special(pCtx, fd1, file1, skip1, fd2, file2, skip2, lflag, sflag);
+}
+#endif  /* non-mmap c_regular */
+
+
+/**
+ * Compares two open files.
+ */
+int
+cmp_fd_and_fd_ex(PKMKBUILTINCTX pCtx, int fd1, const char *file1, off_t skip1,
+                 int fd2, const char *file2, off_t skip2,
+                 int sflag, int lflag, int special)
+{
+    struct stat st1, st2;
+    int rc;
+
+    if (fstat(fd1, &st1))
+        return err(pCtx, ERR_EXIT, "%s", file1);
+    if (fstat(fd2, &st2))
+        return err(pCtx, ERR_EXIT, "%s", file2);
+
+    if (    !S_ISREG(st1.st_mode)
+        ||  !S_ISREG(st2.st_mode)
+        ||  special)
+        rc = c_special(pCtx, fd1, file1, skip1,
+                       fd2, file2, skip2, sflag, lflag);
+    else
+        rc = c_regular(pCtx, fd1, file1, skip1, st1.st_size,
+                       fd2, file2, skip2, st2.st_size, sflag, lflag);
+    return rc;
+}
+
+
+/**
+ * Compares two open files.
+ */
+int
+cmp_fd_and_fd(PKMKBUILTINCTX pCtx, int fd1, const char *file1,
+              int fd2, const char *file2,
+              int sflag, int lflag, int special)
+{
+    return cmp_fd_and_fd_ex(pCtx, fd1, file1, 0, fd2, file2, 0, sflag, lflag, special);
+}
+
+
+/**
+ * Compares an open file with another that isn't open yet.
+ */
+int
+cmp_fd_and_file_ex(PKMKBUILTINCTX pCtx, int fd1, const char *file1, off_t skip1,
+                   const char *file2, off_t skip2,
+                   int sflag, int lflag, int special)
+{
+    int rc;
+    int fd2;
+
+    if (!strcmp(file2, "-"))
+    {
+        fd2 = 0 /* stdin */;
+        special = 1;
+        file2 = "stdin";
+    }
+    else
+        fd2 = open(file2, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0);
+    if (fd2 >= 0)
+    {
+        rc = cmp_fd_and_fd_ex(pCtx, fd1, file1, skip1,
+                              fd2, file2, skip2, sflag, lflag, special);
+        close(fd2);
+    }
+    else
+    {
+        if (!sflag)
+            warn(pCtx, "%s", file2);
+        rc = ERR_EXIT;
+    }
+    return rc;
+}
+
+
+/**
+ * Compares an open file with another that isn't open yet.
+ */
+int
+cmp_fd_and_file(PKMKBUILTINCTX pCtx, int fd1, const char *file1,
+                const char *file2,
+                int sflag, int lflag, int special)
+{
+    return cmp_fd_and_file_ex(pCtx, fd1, file1, 0,
+                                   file2, 0, sflag, lflag, special);
+}
+
+
+/**
+ * Opens and compare two files.
+ */
+int
+cmp_file_and_file_ex(PKMKBUILTINCTX pCtx, const char *file1, off_t skip1,
+                     const char *file2, off_t skip2,
+                     int sflag, int lflag, int special)
+{
+    int fd1;
+    int rc;
+
+    if (lflag && sflag)
+        return errx(pCtx, ERR_EXIT, "only one of -l and -s may be specified");
+
+    if (!strcmp(file1, "-"))
+    {
+        if (!strcmp(file2, "-"))
+            return errx(pCtx, ERR_EXIT, "standard input may only be specified once");
+        file1 = "stdin";
+        fd1 = 1;
+        special = 1;
+    }
+    else
+        fd1 = open(file1, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0);
+    if (fd1 >= 0)
+    {
+        rc = cmp_fd_and_file_ex(pCtx, fd1, file1, skip1,
+                                     file2, skip2, sflag, lflag, special);
+        close(fd1);
+    }
+    else
+    {
+        if (!sflag)
+            warn(pCtx, "%s", file1);
+        rc = ERR_EXIT;
+    }
+
+    return rc;
+}
+
+
+/**
+ * Opens and compare two files.
+ */
+int
+cmp_file_and_file(PKMKBUILTINCTX pCtx, const char *file1, const char *file2, int sflag, int lflag, int special)
+{
+    return cmp_file_and_file_ex(pCtx, file1, 0, file2, 0, sflag, lflag, special);
+}
+
diff --git a/src/kmk/kmkbuiltin/common-env-and-cwd-opt.c b/src/kmk/kmkbuiltin/common-env-and-cwd-opt.c
new file mode 100644
index 0000000..a7f6d58
--- /dev/null
+++ b/src/kmk/kmkbuiltin/common-env-and-cwd-opt.c
@@ -0,0 +1,516 @@
+/* $Id: common-env-and-cwd-opt.c 3332 2020-04-19 23:08:16Z bird $ */
+/** @file
+ * kMk Builtin command - Commmon environment and CWD option handling code.
+ */
+
+/*
+ * Copyright (c) 2007-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "kmkbuiltin.h"
+#include "err.h"
+
+
+/** The environment variable compare function.
+ * We must use case insensitive compare on windows (Path vs PATH).  */
+#ifdef KBUILD_OS_WINDOWS
+# define KSUBMIT_ENV_NCMP   _strnicmp
+#else
+# define KSUBMIT_ENV_NCMP   strncmp
+#endif
+
+
+/**
+ * Duplicates a read-only enviornment vector.
+ *
+ * @returns The duplicate enviornment.
+ * @param   pCtx                The built-in command context.
+ * @param   papszEnv            The read-only vector.
+ * @param   cEnvVars            The number of variables.
+ * @param   pcAllocatedEnvVars  The allocated papszEnv size.  This is zero on
+ *                              input and non-zero on successful return.
+ * @param   cVerbosity          The verbosity level.
+ */
+static char **kBuiltinOptEnvDuplicate(PKMKBUILTINCTX pCtx, char **papszEnv, unsigned cEnvVars, unsigned *pcAllocatedEnvVars,
+                                      int cVerbosity)
+{
+    unsigned cAllocatedEnvVars = (cEnvVars + 2 + 0xf) & ~(unsigned)0xf;
+    char    **papszEnvNew      = malloc(cAllocatedEnvVars * sizeof(papszEnvNew[0]));
+    assert(*pcAllocatedEnvVars == 0);
+    if (papszEnvNew)
+    {
+        unsigned i;
+        for (i = 0; i < cEnvVars; i++)
+        {
+            papszEnvNew[i] = strdup(papszEnv[i]);
+            if (!papszEnvNew)
+            {
+                while (i-- > 0)
+                    free(papszEnvNew[i]);
+                free(papszEnvNew);
+                errx(pCtx, 1, "out of memory for duplicating environment variables!", i);
+                return NULL;
+            }
+        }
+        papszEnvNew[i] = NULL;
+        *pcAllocatedEnvVars = cAllocatedEnvVars;
+    }
+    else
+        errx(pCtx, 1, "out of memory for duplicating environment vector!");
+    return papszEnvNew;
+}
+
+
+/**
+ * Common worker for kBuiltinOptEnvSet and kBuiltinOptEnvAppendPrepend that adds
+ * a new variable to the environment.
+ *
+ * @returns 0 on success, non-zero exit code on error.
+ * @param   pCtx                The built-in command context.
+ * @param   papszEnv            The environment vector.
+ * @param   pcEnvVars           Pointer to the variable holding the number of
+ *                              environment variables held by @a papszEnv.
+ * @param   pcAllocatedEnvVars  Pointer to the variable holding max size of the
+ *                              environment vector.
+ * @param   cVerbosity          The verbosity level.
+ * @param   pszValue            The var=value string to apply.
+ */
+static int kBuiltinOptEnvAddVar(PKMKBUILTINCTX pCtx, char ***ppapszEnv, unsigned *pcEnvVars, unsigned *pcAllocatedEnvVars,
+                                int cVerbosity, const char *pszValue)
+{
+    /* Append new variable. We probably need to resize the vector. */
+    char   **papszEnv = *ppapszEnv;
+    unsigned cEnvVars = *pcEnvVars;
+    if ((cEnvVars + 2) > *pcAllocatedEnvVars)
+    {
+        *pcAllocatedEnvVars = (cEnvVars + 2 + 0xf) & ~(unsigned)0xf;
+        papszEnv = (char **)realloc(papszEnv, *pcAllocatedEnvVars * sizeof(papszEnv[0]));
+        if (!papszEnv)
+            return errx(pCtx, 1, "out of memory growing environment vector!");
+        *ppapszEnv = papszEnv;
+    }
+    papszEnv[cEnvVars] = strdup(pszValue);
+    if (!papszEnv[cEnvVars])
+        return errx(pCtx, 1, "out of memory adding environment variable!");
+    papszEnv[++cEnvVars]   = NULL;
+    *pcEnvVars = cEnvVars;
+    if (cVerbosity > 0)
+        warnx(pCtx, "added '%s'", papszEnv[cEnvVars - 1]);
+    return 0;
+}
+
+
+/**
+ * Common worker for kBuiltinOptEnvSet and kBuiltinOptEnvAppendPrepend that
+ * remove duplicates.
+ *
+ * @returns 0 on success, non-zero exit code on error.
+ * @param   pCtx                The built-in command context.
+ * @param   papszEnv            The environment vector.
+ * @param   cEnvVars            Number of environment variables.
+ * @param   cVerbosity          The verbosity level.
+ * @param   pszValue            The var=value string to apply.
+ * @param   cchVar              The length of the variable part of @a pszValue.
+ * @param   iEnvVar             Where to start searching after.
+ */
+static int kBuiltinOptEnvRemoveDuplicates(PKMKBUILTINCTX pCtx, char **papszEnv, unsigned cEnvVars, int cVerbosity,
+                                          const char *pszValue, size_t cchVar, unsigned iEnvVar)
+{
+    for (iEnvVar++; iEnvVar < cEnvVars; iEnvVar++)
+        if (   KSUBMIT_ENV_NCMP(papszEnv[iEnvVar], pszValue, cchVar) == 0
+            && papszEnv[iEnvVar][cchVar] == '=')
+        {
+            if (cVerbosity > 0)
+                warnx(pCtx, "removing duplicate '%s'", papszEnv[iEnvVar]);
+            free(papszEnv[iEnvVar]);
+            cEnvVars--;
+            if (iEnvVar != cEnvVars)
+                papszEnv[iEnvVar] = papszEnv[cEnvVars];
+            papszEnv[cEnvVars] = NULL;
+            iEnvVar--;
+        }
+    return 0;
+}
+
+
+/**
+ * Handles the --set var=value option.
+ *
+ * @returns 0 on success, non-zero exit code on error.
+ * @param   pCtx                The built-in command context.
+ * @param   ppapszEnv           The environment vector pointer.
+ * @param   pcEnvVars           Pointer to the variable holding the number of
+ *                              environment variables held by @a papszEnv.
+ * @param   pcAllocatedEnvVars  Pointer to the variable holding max size of the
+ *                              environment vector.
+ * @param   cVerbosity          The verbosity level.
+ * @param   pszValue            The var=value string to apply.
+ */
+int kBuiltinOptEnvSet(PKMKBUILTINCTX pCtx, char ***ppapszEnv, unsigned *pcEnvVars, unsigned *pcAllocatedEnvVars,
+                      int cVerbosity, const char *pszValue)
+{
+    const char *pszEqual = strchr(pszValue, '=');
+    if (pszEqual)
+    {
+        char   **papszEnv = *ppapszEnv;
+        unsigned iEnvVar;
+        unsigned cEnvVars = *pcEnvVars;
+        size_t const cchVar = pszEqual - pszValue;
+
+        if (!*pcAllocatedEnvVars)
+        {
+            papszEnv = kBuiltinOptEnvDuplicate(pCtx, papszEnv, cEnvVars, pcAllocatedEnvVars, cVerbosity);
+            if (!papszEnv)
+                return errx(pCtx, 1, "out of memory duplicating enviornment (setenv)!");
+            *ppapszEnv = papszEnv;
+        }
+
+        for (iEnvVar = 0; iEnvVar < cEnvVars; iEnvVar++)
+        {
+            char *pszCur = papszEnv[iEnvVar];
+            if (   KSUBMIT_ENV_NCMP(pszCur, pszValue, cchVar) == 0
+                && pszCur[cchVar] == '=')
+            {
+                if (cVerbosity > 0)
+                    warnx(pCtx, "replacing '%s' with '%s'", papszEnv[iEnvVar], pszValue);
+                free(papszEnv[iEnvVar]);
+                papszEnv[iEnvVar] = strdup(pszValue);
+                if (!papszEnv[iEnvVar])
+                    return errx(pCtx, 1, "out of memory for modified environment variable!");
+
+                return kBuiltinOptEnvRemoveDuplicates(pCtx, papszEnv, cEnvVars, cVerbosity, pszValue, cchVar, iEnvVar);
+            }
+        }
+        return kBuiltinOptEnvAddVar(pCtx, ppapszEnv, pcEnvVars, pcAllocatedEnvVars, cVerbosity, pszValue);
+    }
+    return errx(pCtx, 1, "Missing '=': -E %s", pszValue);
+}
+
+
+/**
+ * Common worker for kBuiltinOptEnvAppend and kBuiltinOptEnvPrepend.
+ *
+ * @returns 0 on success, non-zero exit code on error.
+ * @param   pCtx                The built-in command context.
+ * @param   ppapszEnv           The environment vector pointer.
+ * @param   pcEnvVars           Pointer to the variable holding the number of
+ *                              environment variables held by @a papszEnv.
+ * @param   pcAllocatedEnvVars  Pointer to the variable holding max size of the
+ *                              environment vector.
+ * @param   cVerbosity          The verbosity level.
+ * @param   pszValue            The var=value string to apply.
+ */
+static int kBuiltinOptEnvAppendPrepend(PKMKBUILTINCTX pCtx, char ***ppapszEnv, unsigned *pcEnvVars, unsigned *pcAllocatedEnvVars,
+                                       int cVerbosity, const char *pszValue, int fAppend)
+{
+    const char *pszEqual = strchr(pszValue, '=');
+    if (pszEqual)
+    {
+        char   **papszEnv = *ppapszEnv;
+        unsigned iEnvVar;
+        unsigned cEnvVars = *pcEnvVars;
+        size_t const cchVar = pszEqual - pszValue;
+
+        if (!*pcAllocatedEnvVars)
+        {
+            papszEnv = kBuiltinOptEnvDuplicate(pCtx, papszEnv, cEnvVars, pcAllocatedEnvVars, cVerbosity);
+            if (!papszEnv)
+                return errx(pCtx, 1, "out of memory duplicating environment (append)!");
+            *ppapszEnv = papszEnv;
+        }
+
+        for (iEnvVar = 0; iEnvVar < cEnvVars; iEnvVar++)
+        {
+            char *pszCur = papszEnv[iEnvVar];
+            if (   KSUBMIT_ENV_NCMP(pszCur, pszValue, cchVar) == 0
+                && pszCur[cchVar] == '=')
+            {
+                size_t cchOldValue = strlen(pszCur)   - cchVar - 1;
+                size_t cchNewValue = strlen(pszValue) - cchVar - 1;
+                char  *pszNew      = malloc(cchVar + 1 + cchOldValue + cchNewValue + 1);
+                if (!pszNew)
+                    return errx(pCtx, 1, "out of memory appending to environment variable!");
+                if (fAppend)
+                {
+                    memcpy(pszNew, pszCur, cchVar + 1 + cchOldValue);
+                    memcpy(&pszNew[cchVar + 1 + cchOldValue], &pszValue[cchVar + 1], cchNewValue + 1);
+                }
+                else
+                {
+                    memcpy(pszNew, pszCur, cchVar + 1); /* preserve variable name case  */
+                    memcpy(&pszNew[cchVar + 1], &pszValue[cchVar + 1], cchNewValue);
+                    memcpy(&pszNew[cchVar + 1 + cchNewValue], &pszCur[cchVar + 1], cchOldValue + 1);
+                }
+
+                if (cVerbosity > 0)
+                    warnx(pCtx, "replacing '%s' with '%s'", pszCur, pszNew);
+                free(pszCur);
+                papszEnv[iEnvVar] = pszNew;
+
+                return kBuiltinOptEnvRemoveDuplicates(pCtx, papszEnv, cEnvVars, cVerbosity, pszValue, cchVar, iEnvVar);
+            }
+        }
+        return kBuiltinOptEnvAddVar(pCtx, ppapszEnv, pcEnvVars, pcAllocatedEnvVars, cVerbosity, pszValue);
+    }
+    return errx(pCtx, 1, "Missing '=': -%c %s", fAppend ? 'A' : 'D', pszValue);
+}
+
+
+/**
+ * Handles the --append var=value option.
+ *
+ * @returns 0 on success, non-zero exit code on error.
+ * @param   pCtx                The built-in command context.
+ * @param   ppapszEnv           The environment vector pointer.
+ * @param   pcEnvVars           Pointer to the variable holding the number of
+ *                              environment variables held by @a papszEnv.
+ * @param   pcAllocatedEnvVars  Pointer to the variable holding max size of the
+ *                              environment vector.
+ * @param   cVerbosity          The verbosity level.
+ * @param   pszValue            The var=value string to apply.
+ */
+int kBuiltinOptEnvAppend(PKMKBUILTINCTX pCtx, char ***ppapszEnv, unsigned *pcEnvVars, unsigned *pcAllocatedEnvVars,
+                         int cVerbosity, const char *pszValue)
+{
+    return kBuiltinOptEnvAppendPrepend(pCtx, ppapszEnv, pcEnvVars, pcAllocatedEnvVars, cVerbosity, pszValue, 1 /*fAppend*/);
+}
+
+
+/**
+ * Handles the --prepend var=value option.
+ *
+ * @returns 0 on success, non-zero exit code on error.
+ * @param   pCtx                The built-in command context.
+ * @param   ppapszEnv           The environment vector pointer.
+ * @param   pcEnvVars           Pointer to the variable holding the number of
+ *                              environment variables held by @a papszEnv.
+ * @param   pcAllocatedEnvVars  Pointer to the variable holding max size of the
+ *                              environment vector.
+ * @param   cVerbosity          The verbosity level.
+ * @param   pszValue            The var=value string to apply.
+ */
+int kBuiltinOptEnvPrepend(PKMKBUILTINCTX pCtx, char ***ppapszEnv, unsigned *pcEnvVars, unsigned *pcAllocatedEnvVars,
+                          int cVerbosity, const char *pszValue)
+{
+    return kBuiltinOptEnvAppendPrepend(pCtx, ppapszEnv, pcEnvVars, pcAllocatedEnvVars, cVerbosity, pszValue, 0 /*fAppend*/);
+}
+
+
+/**
+ * Handles the --unset var option.
+ *
+ * @returns 0 on success, non-zero exit code on error.
+ * @param   pCtx                The built-in command context.
+ * @param   ppapszEnv           The environment vector pointer.
+ * @param   pcEnvVars           Pointer to the variable holding the number of
+ *                              environment variables held by @a papszEnv.
+ * @param   pcAllocatedEnvVars  Pointer to the size of the vector allocation.
+ *                              The size is zero when read-only (CRT, GNU make)
+ *                              environment.
+ * @param   cVerbosity          The verbosity level.
+ * @param   pszVarToRemove      The name of the variable to remove.
+ */
+int kBuiltinOptEnvUnset(PKMKBUILTINCTX pCtx, char ***ppapszEnv, unsigned *pcEnvVars, unsigned *pcAllocatedEnvVars,
+                        int cVerbosity, const char *pszVarToRemove)
+{
+    if (strchr(pszVarToRemove, '=') == NULL)
+    {
+        char       **papszEnv = *ppapszEnv;
+        unsigned     cRemoved = 0;
+        size_t const cchVar   = strlen(pszVarToRemove);
+        unsigned     cEnvVars = *pcEnvVars;
+        unsigned     iEnvVar;
+
+        for (iEnvVar = 0; iEnvVar < cEnvVars; iEnvVar++)
+            if (   KSUBMIT_ENV_NCMP(papszEnv[iEnvVar], pszVarToRemove, cchVar) == 0
+                && papszEnv[iEnvVar][cchVar] == '=')
+            {
+                if (cVerbosity > 0)
+                    warnx(pCtx, !cRemoved ? "removing '%s'" : "removing duplicate '%s'", papszEnv[iEnvVar]);
+
+                if (!*pcAllocatedEnvVars)
+                {
+                    papszEnv = kBuiltinOptEnvDuplicate(pCtx, papszEnv, cEnvVars, pcAllocatedEnvVars, cVerbosity);
+                    if (!papszEnv)
+                        return errx(pCtx, 1, "out of memory duplicating environment (unset)!");
+                    *ppapszEnv = papszEnv;
+                }
+
+                free(papszEnv[iEnvVar]);
+                cEnvVars--;
+                if (iEnvVar != cEnvVars)
+                    papszEnv[iEnvVar] = papszEnv[cEnvVars];
+                papszEnv[cEnvVars] = NULL;
+                cRemoved++;
+                iEnvVar--;
+            }
+        *pcEnvVars = cEnvVars;
+
+        if (cVerbosity > 0 && !cRemoved)
+            warnx(pCtx, "not found '%s'", pszVarToRemove);
+    }
+    else
+        return errx(pCtx, 1, "Found invalid variable name character '=' in: -U %s", pszVarToRemove);
+    return 0;
+}
+
+
+/**
+ * Handles the --zap-env & --ignore-environment options.
+ *
+ * @returns 0 on success, non-zero exit code on error.
+ * @param   pCtx                The built-in command context.
+ * @param   ppapszEnv           The environment vector pointer.
+ * @param   pcEnvVars           Pointer to the variable holding the number of
+ *                              environment variables held by @a papszEnv.
+ * @param   pcAllocatedEnvVars  Pointer to the size of the vector allocation.
+ *                              The size is zero when read-only (CRT, GNU make)
+ *                              environment.
+ * @param   cVerbosity          The verbosity level.
+ */
+int kBuiltinOptEnvZap(PKMKBUILTINCTX pCtx, char ***ppapszEnv, unsigned *pcEnvVars, unsigned *pcAllocatedEnvVars, int cVerbosity)
+{
+    if (*pcAllocatedEnvVars > 0)
+    {
+        char **papszEnv = *ppapszEnv;
+        unsigned i = *pcEnvVars;
+        while (i-- > 0)
+        {
+            free(papszEnv[i]);
+            papszEnv[i] = NULL;
+        }
+    }
+    else
+    {
+        char **papszEnv = calloc(4, sizeof(char *));
+        if (!papszEnv)
+            return err(pCtx, 1, "out of memory!");
+        *ppapszEnv = papszEnv;
+        *pcAllocatedEnvVars = 4;
+    }
+    *pcEnvVars = 0;
+    return 0;
+}
+
+
+/**
+ * Cleans up afterwards, if necessary.
+ *
+ * @param   ppapszEnv           The environment vector pointer.
+ * @param   cEnvVars            The number of variables in the vector.
+ * @param   pcAllocatedEnvVars  Pointer to the size of the vector allocation.
+ *                              The size is zero when read-only (CRT, GNU make)
+ *                              environment.
+ */
+void kBuiltinOptEnvCleanup(char ***ppapszEnv, unsigned cEnvVars, unsigned *pcAllocatedEnvVars)
+{
+    char **papszEnv = *ppapszEnv;
+    *ppapszEnv = NULL;
+    if (*pcAllocatedEnvVars > 0)
+    {
+        *pcAllocatedEnvVars = 0;
+        while (cEnvVars-- > 0)
+        {
+            free(papszEnv[cEnvVars]);
+            papszEnv[cEnvVars] = NULL;
+        }
+        free(papszEnv);
+    }
+}
+
+
+/**
+ * Handles the --chdir dir option.
+ *
+ * @returns 0 on success, non-zero exit code on error.
+ * @param   pCtx                The built-in command context.
+ * @param   pszCwd              The CWD buffer.  Contains current CWD on input,
+ *                              modified by @a pszValue on output.
+ * @param   cbCwdBuf            The size of the CWD buffer.
+ * @param   pszValue            The --chdir value to apply.
+ */
+int kBuiltinOptChDir(PKMKBUILTINCTX pCtx, char *pszCwd, size_t cbCwdBuf, const char *pszValue)
+{
+    size_t cchNewCwd = strlen(pszValue);
+    size_t offDst;
+    if (cchNewCwd)
+    {
+#ifdef HAVE_DOS_PATHS
+        if (*pszValue == '/' || *pszValue == '\\')
+        {
+            if (pszValue[1] == '/' || pszValue[1] == '\\')
+                offDst = 0; /* UNC */
+            else if (pszCwd[1] == ':' && isalpha(pszCwd[0]))
+                offDst = 2; /* Take drive letter from CWD. */
+            else
+                return errx(pCtx, 1, "UNC relative CWD not implemented: cur='%s' new='%s'", pszCwd, pszValue);
+        }
+        else if (   pszValue[1] == ':'
+                 && isalpha(pszValue[0]))
+        {
+            if (pszValue[2] == '/'|| pszValue[2] == '\\')
+                offDst = 0; /* DOS style absolute path. */
+            else if (   pszCwd[1] == ':'
+                     && tolower(pszCwd[0]) == tolower(pszValue[0]) )
+            {
+                pszValue += 2; /* Same drive as CWD, append drive relative path from value. */
+                cchNewCwd -= 2;
+                offDst = strlen(pszCwd);
+            }
+            else
+            {
+                /* Get current CWD on the specified drive and append value. */
+                int iDrive = tolower(pszValue[0]) - 'a' + 1;
+                if (!_getdcwd(iDrive, pszCwd, cbCwdBuf))
+                    return err(pCtx, 1, "_getdcwd(%d,,) failed", iDrive);
+                pszValue += 2;
+                cchNewCwd -= 2;
+            }
+        }
+#else
+        if (*pszValue == '/')
+            offDst = 0;
+#endif
+        else
+            offDst = strlen(pszCwd); /* Relative path, append to the existing CWD value. */
+
+        /* Do the copying. */
+#ifdef HAVE_DOS_PATHS
+        if (offDst > 0 && pszCwd[offDst - 1] != '/' && pszCwd[offDst - 1] != '\\')
+#else
+        if (offDst > 0 && pszCwd[offDst - 1] != '/')
+#endif
+             pszCwd[offDst++] = '/';
+        if (offDst + cchNewCwd >= cbCwdBuf)
+            return errx(pCtx, 1, "Too long CWD: %*.*s%s", offDst, offDst, pszCwd, pszValue);
+        memcpy(&pszCwd[offDst], pszValue, cchNewCwd + 1);
+    }
+    /* else: relative, no change - quitely ignore. */
+    return 0;
+}
+
diff --git a/src/kmk/kmkbuiltin/cp.c b/src/kmk/kmkbuiltin/cp.c
new file mode 100644
index 0000000..6719fc2
--- /dev/null
+++ b/src/kmk/kmkbuiltin/cp.c
@@ -0,0 +1,779 @@
+/*
+ * Copyright (c) 1988, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * David Hitz of Auspex Systems Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char const copyright[] =
+"@(#) Copyright (c) 1988, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)cp.c	8.2 (Berkeley) 4/1/94";
+#endif /* not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/bin/cp/cp.c,v 1.50 2004/04/06 20:06:44 markm Exp $");
+#endif
+
+/*
+ * Cp copies source files to target files.
+ *
+ * The global PATH_T structure "to" always contains the path to the
+ * current target file.  Since fts(3) does not change directories,
+ * this path can be either absolute or dot-relative.
+ *
+ * The basic algorithm is to initialize "to" and use fts(3) to traverse
+ * the file hierarchy rooted in the argument list.  A trivial case is the
+ * case of 'cp file1 file2'.  The more interesting case is the case of
+ * 'cp file1 file2 ... fileN dir' where the hierarchy is traversed and the
+ * path (relative to the root of the traversal) is appended to dir (stored
+ * in "to") to form the final target path.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define FAKES_NO_GETOPT_H /* bird */
+#include "config.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <assert.h>
+#include "err.h"
+#include <errno.h>
+#include "fts.h"
+#include <limits.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "getopt_r.h"
+#include "k/kDefs.h"
+#ifdef _MSC_VER
+# include "mscfakes.h"
+#endif
+#include "cp_extern.h"
+#include "kmkbuiltin.h"
+#include "kbuild_protection.h"
+
+#if defined(_MSC_VER) || defined(__gnu_linux__) || defined(__linux__)
+extern size_t strlcpy(char *, const char *, size_t);
+#endif
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+#ifndef S_IFWHT
+#define S_IFWHT 0
+#define S_ISWHT(s) 0
+#define undelete(s) (-1)
+#endif
+
+#ifndef S_ISTXT
+#ifdef S_ISVTX
+#define S_ISTXT S_ISVTX
+#else
+#define S_ISTXT 0
+#endif
+#endif /* !S_ISTXT */
+
+#ifndef __unused
+# define __unused
+#endif
+
+#if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+# define IS_SLASH(ch)   ((ch) == '/' || (ch) == '\\')
+#else
+# define IS_SLASH(ch)   ((ch) == '/')
+#endif
+
+#define	STRIP_TRAILING_SLASH(p) {					\
+        while ((p).p_end > (p).p_path + 1 && IS_SLASH((p).p_end[-1]))	\
+                *--(p).p_end = 0;					\
+}
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct CPINSTANCE
+{
+	CPUTILSINSTANCE Utils;
+	int Rflag, rflag;
+	int cp_ignore_non_existing, cp_changed_only;
+	KBUILDPROTECTION g_ProtData;
+} CPINSTANCE;
+
+/* have wrappers for globals in cp_extern! */
+
+
+enum op { FILE_TO_FILE, FILE_TO_DIR, DIR_TO_DNE };
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+enum cp_arg {
+    CP_OPT_HELP = 261,
+    CP_OPT_VERSION,
+    CP_OPT_IGNORE_NON_EXISTING,
+    CP_OPT_CHANGED,
+    CP_OPT_DISABLE_PROTECTION,
+    CP_OPT_ENABLE_PROTECTION,
+    CP_OPT_ENABLE_FULL_PROTECTION,
+    CP_OPT_DISABLE_FULL_PROTECTION,
+    CP_OPT_PROTECTION_DEPTH
+};
+
+static struct option long_options[] =
+{
+    { "help",   					no_argument, 0, CP_OPT_HELP },
+    { "version",   					no_argument, 0, CP_OPT_VERSION },
+    { "ignore-non-existing",				no_argument, 0, CP_OPT_IGNORE_NON_EXISTING },
+    { "changed",					no_argument, 0, CP_OPT_CHANGED },
+    { "disable-protection",				no_argument, 0, CP_OPT_DISABLE_PROTECTION },
+    { "enable-protection",				no_argument, 0, CP_OPT_ENABLE_PROTECTION },
+    { "enable-full-protection",				no_argument, 0, CP_OPT_ENABLE_FULL_PROTECTION },
+    { "disable-full-protection",			no_argument, 0, CP_OPT_DISABLE_FULL_PROTECTION },
+    { "protection-depth",				required_argument, 0, CP_OPT_PROTECTION_DEPTH },
+    { 0, 0,	0, 0 },
+};
+
+static char emptystring[] = "";
+
+#if defined(SIGINFO) && defined(KMK_BUILTIN_STANDALONE)
+volatile sig_atomic_t g_cp_info;
+#endif
+
+extern mode_t g_fUMask;
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+static int copy(CPINSTANCE *pThis, char * const *, enum op, int);
+#ifdef FTSCALL
+static int FTSCALL mastercmp(const FTSENT * const *, const FTSENT * const *);
+#else
+static int mastercmp(const FTSENT **, const FTSENT **);
+#endif
+#if defined(SIGINFO) && defined(KMK_BUILTIN_STANDALONE)
+static void siginfo(int __unused);
+#endif
+static int usage(PKMKBUILTINCTX, int);
+
+int
+kmk_builtin_cp(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+	CPINSTANCE This;
+	struct getopt_state_r gos;
+	struct stat to_stat, tmp_stat;
+	enum op type;
+	int Hflag, Lflag, Pflag, ch, fts_options, r, have_trailing_slash, rc;
+	char *target;
+
+        /* init globals */
+	This.Utils.pCtx = pCtx;
+        This.Utils.to.p_end = This.Utils.to.p_path;
+        This.Utils.to.target_end = emptystring;
+        memset(This.Utils.to.p_path, 0, sizeof(This.Utils.to.p_path));
+        This.Utils.fflag = 0;
+	This.Utils.iflag = 0;
+	This.Utils.nflag = 0;
+	This.Utils.pflag = 0;
+	This.Utils.vflag = 0;
+	This.Rflag = 0;
+	This.rflag = 0;
+	This.cp_ignore_non_existing = This.cp_changed_only = 0;
+	kBuildProtectionInit(&This.g_ProtData, pCtx);
+
+	Hflag = Lflag = Pflag = 0;
+	getopt_initialize_r(&gos, argc, argv, "HLPRfinprv", long_options, envp, pCtx);
+	while ((ch = getopt_long_r(&gos, NULL)) != -1)
+		switch (ch) {
+		case 'H':
+			Hflag = 1;
+			Lflag = Pflag = 0;
+			break;
+		case 'L':
+			Lflag = 1;
+			Hflag = Pflag = 0;
+			break;
+		case 'P':
+			Pflag = 1;
+			Hflag = Lflag = 0;
+			break;
+		case 'R':
+			This.Rflag = 1;
+			break;
+		case 'f':
+			This.Utils.fflag = 1;
+			This.Utils.iflag = This.Utils.nflag = 0;
+			break;
+		case 'i':
+			This.Utils.iflag = 1;
+			This.Utils.fflag = This.Utils.nflag = 0;
+			break;
+		case 'n':
+			This.Utils.nflag = 1;
+			This.Utils.fflag = This.Utils.iflag = 0;
+			break;
+		case 'p':
+			This.Utils.pflag = 1;
+			break;
+		case 'r':
+			This.rflag = 1;
+			break;
+		case 'v':
+			This.Utils.vflag = 1;
+			break;
+		case CP_OPT_HELP:
+			usage(pCtx, 0);
+			kBuildProtectionTerm(&This.g_ProtData);
+			return 0;
+		case CP_OPT_VERSION:
+			kBuildProtectionTerm(&This.g_ProtData);
+			return kbuild_version(argv[0]);
+		case CP_OPT_IGNORE_NON_EXISTING:
+			This.cp_ignore_non_existing = 1;
+			break;
+		case CP_OPT_CHANGED:
+			This.cp_changed_only = 1;
+			break;
+		case CP_OPT_DISABLE_PROTECTION:
+			kBuildProtectionDisable(&This.g_ProtData, KBUILDPROTECTIONTYPE_RECURSIVE);
+			break;
+		case CP_OPT_ENABLE_PROTECTION:
+			kBuildProtectionEnable(&This.g_ProtData, KBUILDPROTECTIONTYPE_RECURSIVE);
+			break;
+		case CP_OPT_ENABLE_FULL_PROTECTION:
+			kBuildProtectionEnable(&This.g_ProtData, KBUILDPROTECTIONTYPE_FULL);
+			break;
+		case CP_OPT_DISABLE_FULL_PROTECTION:
+			kBuildProtectionDisable(&This.g_ProtData, KBUILDPROTECTIONTYPE_FULL);
+			break;
+		case CP_OPT_PROTECTION_DEPTH:
+			if (kBuildProtectionSetDepth(&This.g_ProtData, gos.optarg)) {
+				kBuildProtectionTerm(&This.g_ProtData);
+				return 1;
+			}
+			break;
+		default:
+			kBuildProtectionTerm(&This.g_ProtData);
+		        return usage(pCtx, 1);
+		}
+	argc -= gos.optind;
+	argv += gos.optind;
+
+	if (argc < 2) {
+		kBuildProtectionTerm(&This.g_ProtData);
+		return usage(pCtx, 1);
+	}
+
+	fts_options = FTS_NOCHDIR | FTS_PHYSICAL;
+	if (This.rflag) {
+		if (This.Rflag) {
+			kBuildProtectionTerm(&This.g_ProtData);
+			return errx(pCtx, 1,
+		    "the -R and -r options may not be specified together.");
+		}
+		if (Hflag || Lflag || Pflag)
+			errx(pCtx, 1,
+	"the -H, -L, and -P options may not be specified with the -r option.");
+		fts_options &= ~FTS_PHYSICAL;
+		fts_options |= FTS_LOGICAL;
+        }
+	if (This.Rflag) {
+		if (Hflag)
+			fts_options |= FTS_COMFOLLOW;
+		if (Lflag) {
+			fts_options &= ~FTS_PHYSICAL;
+			fts_options |= FTS_LOGICAL;
+		}
+	} else {
+		fts_options &= ~FTS_PHYSICAL;
+		fts_options |= FTS_LOGICAL | FTS_COMFOLLOW;
+	}
+#if defined(SIGINFO) && defined(KMK_BUILTIN_STANDALONE)
+	(void)signal(SIGINFO, siginfo);
+#endif
+
+	/* Save the target base in "to". */
+	target = argv[--argc];
+	if (strlcpy(This.Utils.to.p_path, target, sizeof(This.Utils.to.p_path)) >= sizeof(This.Utils.to.p_path)) {
+		kBuildProtectionTerm(&This.g_ProtData);
+		return errx(pCtx, 1, "%s: name too long", target);
+	}
+	This.Utils.to.p_end = This.Utils.to.p_path + strlen(This.Utils.to.p_path);
+        if (This.Utils.to.p_path == This.Utils.to.p_end) {
+		*This.Utils.to.p_end++ = '.';
+		*This.Utils.to.p_end = 0;
+	}
+	have_trailing_slash = IS_SLASH(This.Utils.to.p_end[-1]);
+	if (have_trailing_slash)
+		STRIP_TRAILING_SLASH(This.Utils.to);
+	This.Utils.to.target_end = This.Utils.to.p_end;
+
+	/* Set end of argument list for fts(3). */
+	argv[argc] = NULL;
+
+	/*
+	 * Cp has two distinct cases:
+	 *
+	 * cp [-R] source target
+	 * cp [-R] source1 ... sourceN directory
+	 *
+	 * In both cases, source can be either a file or a directory.
+	 *
+	 * In (1), the target becomes a copy of the source. That is, if the
+	 * source is a file, the target will be a file, and likewise for
+	 * directories.
+	 *
+	 * In (2), the real target is not directory, but "directory/source".
+	 */
+	r = stat(This.Utils.to.p_path, &to_stat);
+	if (r == -1 && errno != ENOENT) {
+		kBuildProtectionTerm(&This.g_ProtData);
+		return err(pCtx, 1, "stat: %s", This.Utils.to.p_path);
+	}
+	if (r == -1 || !S_ISDIR(to_stat.st_mode)) {
+		/*
+		 * Case (1).  Target is not a directory.
+		 */
+		if (argc > 1) {
+			kBuildProtectionTerm(&This.g_ProtData);
+			return usage(pCtx, 1);
+		}
+		/*
+		 * Need to detect the case:
+		 *	cp -R dir foo
+		 * Where dir is a directory and foo does not exist, where
+		 * we want pathname concatenations turned on but not for
+		 * the initial mkdir().
+		 */
+		if (r == -1) {
+			if (This.rflag || (This.Rflag && (Lflag || Hflag)))
+				stat(*argv, &tmp_stat);
+			else
+				lstat(*argv, &tmp_stat);
+
+			if (S_ISDIR(tmp_stat.st_mode) && (This.Rflag || This.rflag))
+				type = DIR_TO_DNE;
+			else
+				type = FILE_TO_FILE;
+		} else
+			type = FILE_TO_FILE;
+
+		if (have_trailing_slash && type == FILE_TO_FILE) {
+			kBuildProtectionTerm(&This.g_ProtData);
+			if (r == -1)
+				return errx(pCtx, 1, "directory %s does not exist",
+				            This.Utils.to.p_path);
+			else
+				return errx(pCtx, 1, "%s is not a directory", This.Utils.to.p_path);
+		}
+	} else
+		/*
+		 * Case (2).  Target is a directory.
+		 */
+		type = FILE_TO_DIR;
+
+	/* Finally, check that the "to" directory isn't protected. */
+	rc = 1;
+	if (!kBuildProtectionScanEnv(&This.g_ProtData, envp, "KMK_CP_")
+	 && !kBuildProtectionEnforce(&This.g_ProtData,
+				     This.Rflag || This.rflag
+				     ? KBUILDPROTECTIONTYPE_RECURSIVE
+				     : KBUILDPROTECTIONTYPE_FULL,
+				     This.Utils.to.p_path)) {
+	    rc = copy(&This, argv, type, fts_options);
+	}
+
+	kBuildProtectionTerm(&This.g_ProtData);
+	return rc;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+mode_t g_fUMask;
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_cp", NULL };
+    umask(g_fUMask = umask(0077));
+    return kmk_builtin_cp(argc, argv, envp, &Ctx);
+}
+#endif
+
+static int
+copy(CPINSTANCE *pThis, char * const *argv, enum op type, int fts_options)
+{
+	struct stat to_stat;
+	FTS *ftsp;
+	FTSENT *curr;
+	int base = 0, dne, badcp, rval;
+	size_t nlen;
+	char *p, *target_mid;
+	mode_t mask, mode;
+
+	/*
+	 * Keep an inverted copy of the umask, for use in correcting
+	 * permissions on created directories when not using -p.
+	 */
+	mask = g_fUMask;
+	assert(mask == umask(mask));
+	mask = ~mask;
+
+	if ((ftsp = fts_open(argv, fts_options, mastercmp)) == NULL)
+		return err(pThis->Utils.pCtx, 1, "fts_open");
+	for (badcp = rval = 0; (curr = fts_read(ftsp)) != NULL; badcp = 0) {
+                int copied = 0;
+
+		switch (curr->fts_info) {
+		case FTS_NS:
+			if (   pThis->cp_ignore_non_existing
+			    && curr->fts_errno == ENOENT) {
+				if (pThis->Utils.vflag) {
+					warnx(pThis->Utils.pCtx, "fts: %s: %s", curr->fts_path,
+					      strerror(curr->fts_errno));
+				}
+				continue;
+			}
+			/* fall thru */
+		case FTS_DNR:
+		case FTS_ERR:
+			warnx(pThis->Utils.pCtx, "fts: %s: %s",
+			    curr->fts_path, strerror(curr->fts_errno));
+			badcp = rval = 1;
+			continue;
+		case FTS_DC:			/* Warn, continue. */
+			warnx(pThis->Utils.pCtx, "%s: directory causes a cycle", curr->fts_path);
+			badcp = rval = 1;
+			continue;
+		default:
+			;
+		}
+
+		/*
+		 * If we are in case (2) or (3) above, we need to append the
+                 * source name to the target name.
+                 */
+		if (type != FILE_TO_FILE) {
+			/*
+			 * Need to remember the roots of traversals to create
+			 * correct pathnames.  If there's a directory being
+			 * copied to a non-existent directory, e.g.
+			 *	cp -R a/dir noexist
+			 * the resulting path name should be noexist/foo, not
+			 * noexist/dir/foo (where foo is a file in dir), which
+			 * is the case where the target exists.
+			 *
+			 * Also, check for "..".  This is for correct path
+			 * concatenation for paths ending in "..", e.g.
+			 *	cp -R .. /tmp
+			 * Paths ending in ".." are changed to ".".  This is
+			 * tricky, but seems the easiest way to fix the problem.
+			 *
+			 * XXX
+			 * Since the first level MUST be FTS_ROOTLEVEL, base
+			 * is always initialized.
+			 */
+			if (curr->fts_level == FTS_ROOTLEVEL) {
+				if (type != DIR_TO_DNE) {
+					p = strrchr(curr->fts_path, '/');
+#if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+                                        if (strrchr(curr->fts_path, '\\') > p)
+                                            p = strrchr(curr->fts_path, '\\');
+#endif
+					base = (p == NULL) ? 0 :
+					    (int)(p - curr->fts_path + 1);
+
+					if (!strcmp(&curr->fts_path[base],
+					    ".."))
+						base += 1;
+				} else
+					base = curr->fts_pathlen;
+			}
+
+			p = &curr->fts_path[base];
+			nlen = curr->fts_pathlen - base;
+			target_mid = pThis->Utils.to.target_end;
+			if (!IS_SLASH(*p) && !IS_SLASH(target_mid[-1]))
+				*target_mid++ = '/';
+			*target_mid = 0;
+			if (target_mid - pThis->Utils.to.p_path + nlen >= PATH_MAX) {
+				warnx(pThis->Utils.pCtx, "%s%s: name too long (not copied)",
+				    pThis->Utils.to.p_path, p);
+				badcp = rval = 1;
+				continue;
+			}
+			(void)strncat(target_mid, p, nlen);
+			pThis->Utils.to.p_end = target_mid + nlen;
+			*pThis->Utils.to.p_end = 0;
+			STRIP_TRAILING_SLASH(pThis->Utils.to);
+		}
+
+		if (curr->fts_info == FTS_DP) {
+			/*
+			 * We are nearly finished with this directory.  If we
+			 * didn't actually copy it, or otherwise don't need to
+			 * change its attributes, then we are done.
+			 */
+			if (!curr->fts_number)
+				continue;
+			/*
+			 * If -p is in effect, set all the attributes.
+			 * Otherwise, set the correct permissions, limited
+			 * by the umask.  Optimise by avoiding a chmod()
+			 * if possible (which is usually the case if we
+			 * made the directory).  Note that mkdir() does not
+			 * honour setuid, setgid and sticky bits, but we
+			 * normally want to preserve them on directories.
+			 */
+			if (pThis->Utils.pflag) {
+				if (copy_file_attribs(&pThis->Utils, curr->fts_statp, -1))
+				    rval = 1;
+			} else {
+				mode = curr->fts_statp->st_mode;
+				if ((mode & (S_ISUID | S_ISGID | S_ISTXT)) ||
+				    ((mode | S_IRWXU) & mask) != (mode & mask))
+					if (chmod(pThis->Utils.to.p_path, mode & mask) != 0){
+						warn(pThis->Utils.pCtx, "chmod: %s", pThis->Utils.to.p_path);
+						rval = 1;
+					}
+			}
+			continue;
+		}
+
+		/* Not an error but need to remember it happened */
+		if (stat(pThis->Utils.to.p_path, &to_stat) == -1)
+			dne = 1;
+		else {
+			if (to_stat.st_dev == curr->fts_statp->st_dev &&
+			    to_stat.st_dev != 0 &&
+			    to_stat.st_ino == curr->fts_statp->st_ino &&
+			    to_stat.st_ino != 0) {
+				warnx(pThis->Utils.pCtx, "%s and %s are identical (not copied).",
+				    pThis->Utils.to.p_path, curr->fts_path);
+				badcp = rval = 1;
+				if (S_ISDIR(curr->fts_statp->st_mode))
+					(void)fts_set(ftsp, curr, FTS_SKIP);
+				continue;
+			}
+			if (!S_ISDIR(curr->fts_statp->st_mode) &&
+			    S_ISDIR(to_stat.st_mode)) {
+				warnx(pThis->Utils.pCtx, "cannot overwrite directory %s with "
+				    "non-directory %s",
+				    pThis->Utils.to.p_path, curr->fts_path);
+				badcp = rval = 1;
+				continue;
+			}
+			dne = 0;
+		}
+
+		switch (curr->fts_statp->st_mode & S_IFMT) {
+#ifdef S_IFLNK
+		case S_IFLNK:
+			/* Catch special case of a non-dangling symlink */
+			if ((fts_options & FTS_LOGICAL) ||
+			    ((fts_options & FTS_COMFOLLOW) &&
+			    curr->fts_level == 0)) {
+				if (copy_file(&pThis->Utils, curr, dne, pThis->cp_changed_only, &copied))
+					badcp = rval = 1;
+			} else {
+				if (copy_link(&pThis->Utils, curr, !dne))
+					badcp = rval = 1;
+			}
+			break;
+#endif
+		case S_IFDIR:
+			if (!pThis->Rflag && !pThis->rflag) {
+				warnx(pThis->Utils.pCtx, "%s is a directory (not copied).",
+				    curr->fts_path);
+				(void)fts_set(ftsp, curr, FTS_SKIP);
+				badcp = rval = 1;
+				break;
+			}
+			/*
+			 * If the directory doesn't exist, create the new
+			 * one with the from file mode plus owner RWX bits,
+			 * modified by the umask.  Trade-off between being
+			 * able to write the directory (if from directory is
+			 * 555) and not causing a permissions race.  If the
+			 * umask blocks owner writes, we fail..
+			 */
+			if (dne) {
+				if (mkdir(pThis->Utils.to.p_path,
+				    curr->fts_statp->st_mode | S_IRWXU) < 0)
+					return err(pThis->Utils.pCtx, 1, "mkdir: %s", pThis->Utils.to.p_path);
+			} else if (!S_ISDIR(to_stat.st_mode)) {
+				errno = ENOTDIR;
+				return err(pThis->Utils.pCtx, 1, "to-mode: %s", pThis->Utils.to.p_path);
+			}
+			/*
+			 * Arrange to correct directory attributes later
+			 * (in the post-order phase) if this is a new
+			 * directory, or if the -p flag is in effect.
+			 */
+			curr->fts_number = pThis->Utils.pflag || dne;
+			break;
+#ifdef S_IFBLK
+		case S_IFBLK:
+#endif
+		case S_IFCHR:
+			if (pThis->Rflag) {
+				if (copy_special(&pThis->Utils, curr->fts_statp, !dne))
+					badcp = rval = 1;
+			} else {
+				if (copy_file(&pThis->Utils, curr, dne, pThis->cp_changed_only, &copied))
+					badcp = rval = 1;
+			}
+			break;
+#ifdef S_IFIFO
+		case S_IFIFO:
+#endif
+			if (pThis->Rflag) {
+				if (copy_fifo(&pThis->Utils, curr->fts_statp, !dne))
+					badcp = rval = 1;
+			} else {
+				if (copy_file(&pThis->Utils, curr, dne, pThis->cp_changed_only, &copied))
+					badcp = rval = 1;
+			}
+			break;
+		default:
+			if (copy_file(&pThis->Utils, curr, dne, pThis->cp_changed_only, &copied))
+				badcp = rval = 1;
+			break;
+		}
+		if (pThis->Utils.vflag && !badcp)
+			kmk_builtin_ctx_printf(pThis->Utils.pCtx, 0, copied ? "%s -> %s\n" : "%s matches %s - not copied\n",
+					       curr->fts_path, pThis->Utils.to.p_path);
+	}
+	if (errno)
+		return err(pThis->Utils.pCtx, 1, "fts_read");
+	return (rval);
+}
+
+/*
+ * mastercmp --
+ *	The comparison function for the copy order.  The order is to copy
+ *	non-directory files before directory files.  The reason for this
+ *	is because files tend to be in the same cylinder group as their
+ *	parent directory, whereas directories tend not to be.  Copying the
+ *	files first reduces seeking.
+ */
+#ifdef FTSCALL
+static int FTSCALL mastercmp(const FTSENT * const *a, const FTSENT * const *b)
+#else
+static int mastercmp(const FTSENT **a, const FTSENT **b)
+#endif
+{
+	int a_info, b_info;
+
+	a_info = (*a)->fts_info;
+	if (a_info == FTS_ERR || a_info == FTS_NS || a_info == FTS_DNR)
+		return (0);
+	b_info = (*b)->fts_info;
+	if (b_info == FTS_ERR || b_info == FTS_NS || b_info == FTS_DNR)
+		return (0);
+	if (a_info == FTS_D)
+		return (-1);
+	if (b_info == FTS_D)
+		return (1);
+	return (0);
+}
+
+#if defined(SIGINFO) && defined(KMK_BUILTIN_STANDALONE)
+static void
+siginfo(int sig __unused)
+{
+
+	g_cp_info = 1;
+}
+#endif
+
+
+static int
+usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+	kmk_builtin_ctx_printf(pCtx, fIsErr,
+"usage: %s [options] src target\n"
+"   or: %s [options] src1 ... srcN directory\n"
+"   or: %s --help\n"
+"   or: %s --version\n"
+"\n"
+"Options:\n"
+"   -R  Recursive copy.\n"
+"   -H  Follow symbolic links on the commandline. Only valid with -R.\n"
+"   -L  Follow all symbolic links. Only valid with -R.\n"
+"   -P  Do not follow symbolic links. Default. Only valid with -R\n"
+"   -f  Force. Overrides -i and -n.\n"
+"   -i  Iteractive. Overrides -n and -f.\n"
+"   -n  Don't overwrite any files. Overrides -i and -f.\n"
+"   -v  Verbose.\n"
+"   --ignore-non-existing\n"
+"       Don't fail if the specified source file doesn't exist.\n"
+"   --changed\n"
+"       Only copy if changed (i.e. compare first).\n"
+"   --disable-protection\n"
+"       Will disable the protection file protection applied with -R.\n"
+"   --enable-protection\n"
+"       Will enable the protection file protection applied with -R.\n"
+"   --enable-full-protection\n"
+"       Will enable the protection file protection for all operations.\n"
+"   --disable-full-protection\n"
+"       Will disable the protection file protection for all operations.\n"
+"   --protection-depth\n"
+"       Number or path indicating the file protection depth. Default: %d\n"
+"\n"
+"Environment:\n"
+"    KMK_CP_DISABLE_PROTECTION\n"
+"       Same as --disable-protection. Overrides command line.\n"
+"    KMK_CP_ENABLE_PROTECTION\n"
+"       Same as --enable-protection. Overrides everyone else.\n"
+"    KMK_CP_ENABLE_FULL_PROTECTION\n"
+"       Same as --enable-full-protection. Overrides everyone else.\n"
+"    KMK_CP_DISABLE_FULL_PROTECTION\n"
+"       Same as --disable-full-protection. Overrides command line.\n"
+"    KMK_CP_PROTECTION_DEPTH\n"
+"       Same as --protection-depth. Overrides command line.\n"
+"\n"
+"The file protection of the top %d layers of the file hierarchy is there\n"
+"to try prevent makefiles from doing bad things to your system. This\n"
+"protection is not bulletproof, but should help prevent you from shooting\n"
+"yourself in the foot.\n"
+		,
+	        pCtx->pszProgName, pCtx->pszProgName,
+		pCtx->pszProgName, pCtx->pszProgName,
+	        kBuildProtectionDefaultDepth(), kBuildProtectionDefaultDepth());
+	return 1;
+}
diff --git a/src/kmk/kmkbuiltin/cp_extern.h b/src/kmk/kmkbuiltin/cp_extern.h
new file mode 100644
index 0000000..bcae631
--- /dev/null
+++ b/src/kmk/kmkbuiltin/cp_extern.h
@@ -0,0 +1,55 @@
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)extern.h	8.2 (Berkeley) 4/1/94
+ * $FreeBSD: src/bin/cp/extern.h,v 1.19 2004/04/06 20:06:44 markm Exp $
+ */
+
+#include "kmkbuiltin.h" /* for PATH_MAX on GNU/hurd */
+
+typedef struct {
+	char	*p_end;			/* pointer to NULL at end of path */
+	char	*target_end;		/* pointer to end of target base */
+	char	p_path[PATH_MAX];	/* pointer to the start of a path */
+} PATH_T;
+
+typedef struct CPUTILSINSTANCE {
+    PKMKBUILTINCTX pCtx;
+    /*extern*/ PATH_T to;
+    /*extern*/ int fflag, iflag, nflag, pflag, vflag;
+} CPUTILSINSTANCE;
+
+#if defined(SIGINFO) && defined(KMK_BUILTIN_STANDALONE)
+extern volatile sig_atomic_t g_cp_info;
+#endif
+
+int	copy_fifo(CPUTILSINSTANCE *pThis, struct stat *, int);
+int	copy_file(CPUTILSINSTANCE *pThis, const FTSENT *, int, int, int *);
+int	copy_link(CPUTILSINSTANCE *pThis, const FTSENT *, int);
+int	copy_special(CPUTILSINSTANCE *pThis, struct stat *, int);
+int	copy_file_attribs(CPUTILSINSTANCE *pThis, struct stat *, int);
diff --git a/src/kmk/kmkbuiltin/cp_utils.c b/src/kmk/kmkbuiltin/cp_utils.c
new file mode 100644
index 0000000..e97e75d
--- /dev/null
+++ b/src/kmk/kmkbuiltin/cp_utils.c
@@ -0,0 +1,397 @@
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)utils.c	8.3 (Berkeley) 4/1/94";
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/bin/cp/utils.c,v 1.43 2004/04/06 20:06:44 markm Exp $");
+#endif
+#endif /* not lint */
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define MSC_DO_64_BIT_IO
+#include "config.h"
+#ifndef _MSC_VER
+# include <sys/param.h>
+#endif
+#include <sys/stat.h>
+#ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
+# include <sys/mman.h>
+#endif
+
+#include "err.h"
+#include <errno.h>
+#include <fcntl.h>
+#include "fts.h"
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#ifndef __HAIKU__
+# include <sysexits.h>
+#endif
+#include <unistd.h>
+#ifdef __sun__
+# include "solfakes.h"
+#endif
+#ifdef __HAIKU__
+# include "haikufakes.h"
+#endif
+#ifdef _MSC_VER
+# include "mscfakes.h"
+#else
+# include <sys/time.h>
+#endif
+#include "cp_extern.h"
+#include "cmp_extern.h"
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+#define	cp_pct(x,y)	(int)(100.0 * (double)(x) / (double)(y))
+
+#ifndef MAXBSIZE
+# define MAXBSIZE 0x10000
+#endif
+#ifndef O_BINARY
+# define O_BINARY 0
+#endif
+
+#ifndef S_ISVTX
+# define S_ISVTX 0
+#endif
+
+
+int
+copy_file(CPUTILSINSTANCE *pThis, const FTSENT *entp, int dne, int changed_only, int *pcopied)
+{
+	/*static*/ char buf[MAXBSIZE];
+	struct stat *fs;
+	int ch, checkch, from_fd, rcount, rval, to_fd;
+	ssize_t wcount;
+	size_t wresid;
+	size_t wtotal;
+	char *bufp;
+#ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
+	char *p;
+#endif
+
+	*pcopied = 0;
+
+	if ((from_fd = open(entp->fts_path, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0)) == -1) {
+		warn(pThis->pCtx, "open: %s", entp->fts_path);
+		return (1);
+	}
+
+	fs = entp->fts_statp;
+
+	/*
+	 * If the file exists and we're interactive, verify with the user.
+	 * If the file DNE, set the mode to be the from file, minus setuid
+	 * bits, modified by the umask; arguably wrong, but it makes copying
+	 * executables work right and it's been that way forever.  (The
+	 * other choice is 666 or'ed with the execute bits on the from file
+	 * modified by the umask.)
+	 */
+	if (!dne) {
+		/* compare the files first if requested */
+		if (changed_only) {
+                        if (cmp_fd_and_file(pThis->pCtx, from_fd, entp->fts_path, pThis->to.p_path,
+					    1 /* silent */, 0 /* lflag */,
+					    0 /* special */) == OK_EXIT) {
+				close(from_fd);
+				return (0);
+			}
+			if (lseek(from_fd, 0, SEEK_SET) != 0) {
+    				close(from_fd);
+				if ((from_fd = open(entp->fts_path, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0)) == -1) {
+					warn(pThis->pCtx, "open: %s", entp->fts_path);
+					return (1);
+				}
+			}
+		}
+
+#define YESNO "(y/n [n]) "
+		if (pThis->nflag) {
+			if (pThis->vflag)
+				kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s not overwritten\n", pThis->to.p_path);
+			return (0);
+		} else if (pThis->iflag) {
+			(void)fprintf(stderr, "overwrite %s? %s",
+					pThis->to.p_path, YESNO);
+			checkch = ch = getchar();
+			while (ch != '\n' && ch != EOF)
+				ch = getchar();
+			if (checkch != 'y' && checkch != 'Y') {
+				(void)close(from_fd);
+				kmk_builtin_ctx_printf(pThis->pCtx, 1, "not overwritten\n");
+				return (1);
+			}
+		}
+
+		if (pThis->fflag) {
+		    /* remove existing destination file name,
+		     * create a new file  */
+		    (void)unlink(pThis->to.p_path);
+		    to_fd = open(pThis->to.p_path, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY | KMK_OPEN_NO_INHERIT,
+				 fs->st_mode & ~(S_ISUID | S_ISGID));
+		} else
+		    /* overwrite existing destination file name */
+		    to_fd = open(pThis->to.p_path, O_WRONLY | O_TRUNC | O_BINARY | KMK_OPEN_NO_INHERIT, 0);
+	} else
+		to_fd = open(pThis->to.p_path, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY | KMK_OPEN_NO_INHERIT,
+		    fs->st_mode & ~(S_ISUID | S_ISGID));
+
+	if (to_fd == -1) {
+		warn(pThis->pCtx, "open: %s", pThis->to.p_path);
+		(void)close(from_fd);
+		return (1);
+	}
+
+	rval = 0;
+	*pcopied = 1;
+
+	/*
+	 * Mmap and write if less than 8M (the limit is so we don't totally
+	 * trash memory on big files.  This is really a minor hack, but it
+	 * wins some CPU back.
+	 */
+#ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
+	if (S_ISREG(fs->st_mode) && fs->st_size > 0 &&
+	    fs->st_size <= 8 * 1048576) {
+		if ((p = mmap(NULL, (size_t)fs->st_size, PROT_READ,
+		    MAP_SHARED, from_fd, (off_t)0)) == MAP_FAILED) {
+			warn(pThis->pCtx, "mmap: %s", entp->fts_path);
+			rval = 1;
+		} else {
+			wtotal = 0;
+			for (bufp = p, wresid = fs->st_size; ;
+			    bufp += wcount, wresid -= (size_t)wcount) {
+				wcount = write(to_fd, bufp, wresid);
+				wtotal += wcount;
+# if defined(SIGINFO) && defined(KMK_BUILTIN_STANDALONE)
+				if (g_cp_info) {
+					g_cp_info = 0;
+					kmk_builtin_ctx_printf(pThis->pCtx, 1,
+						"%s -> %s %3d%%\n",
+						entp->fts_path, pThis->to.p_path,
+						cp_pct(wtotal, fs->st_size));
+
+				}
+#endif
+				if (wcount >= (ssize_t)wresid || wcount <= 0)
+					break;
+			}
+			if (wcount != (ssize_t)wresid) {
+				warn(pThis->pCtx, "write[%zd != %zu]: %s", wcount, wresid, pThis->to.p_path);
+				rval = 1;
+			}
+			/* Some systems don't unmap on close(2). */
+			if (munmap(p, fs->st_size) < 0) {
+				warn(pThis->pCtx, "munmap: %s", entp->fts_path);
+				rval = 1;
+			}
+		}
+	} else
+#endif
+	{
+		wtotal = 0;
+		while ((rcount = read(from_fd, buf, MAXBSIZE)) > 0) {
+			for (bufp = buf, wresid = rcount; ;
+			    bufp += wcount, wresid -= wcount) {
+				wcount = write(to_fd, bufp, wresid);
+				wtotal += wcount;
+#if defined(SIGINFO) && defined(KMK_BUILTIN_STANDALONE)
+				if (g_cp_info) {
+					g_cp_info = 0;
+					kmk_builtin_ctx_printf(pThis->pCtx, 1,
+						"%s -> %s %3d%%\n",
+						entp->fts_path, pThis->to.p_path,
+						cp_pct(wtotal, fs->st_size));
+
+				}
+#endif
+				if (wcount >= (ssize_t)wresid || wcount <= 0)
+					break;
+			}
+			if (wcount != (ssize_t)wresid) {
+				warn(pThis->pCtx, "write[%zd != %zu]: %s", wcount, wresid, pThis->to.p_path);
+				rval = 1;
+				break;
+			}
+		}
+		if (rcount < 0) {
+			warn(pThis->pCtx, "read: %s", entp->fts_path);
+			rval = 1;
+		}
+	}
+
+	/*
+	 * Don't remove the target even after an error.  The target might
+	 * not be a regular file, or its attributes might be important,
+	 * or its contents might be irreplaceable.  It would only be safe
+	 * to remove it if we created it and its length is 0.
+	 */
+
+	if (pThis->pflag && copy_file_attribs(pThis, fs, to_fd))
+		rval = 1;
+	(void)close(from_fd);
+	if (close(to_fd)) {
+		warn(pThis->pCtx, "close: %s", pThis->to.p_path);
+		rval = 1;
+	}
+	return (rval);
+}
+
+int
+copy_link(CPUTILSINSTANCE *pThis, const FTSENT *p, int exists)
+{
+	int len;
+	char llink[PATH_MAX];
+
+	if ((len = readlink(p->fts_path, llink, sizeof(llink) - 1)) == -1) {
+		warn(pThis->pCtx, "readlink: %s", p->fts_path);
+		return (1);
+	}
+	llink[len] = '\0';
+	if (exists && unlink(pThis->to.p_path)) {
+		warn(pThis->pCtx, "unlink: %s", pThis->to.p_path);
+		return (1);
+	}
+	if (symlink(llink, pThis->to.p_path)) {
+		warn(pThis->pCtx, "symlink: %s", llink);
+		return (1);
+	}
+	return (pThis->pflag ? copy_file_attribs(pThis, p->fts_statp, -1) : 0);
+}
+
+int
+copy_fifo(CPUTILSINSTANCE *pThis, struct stat *from_stat, int exists)
+{
+	if (exists && unlink(pThis->to.p_path)) {
+		warn(pThis->pCtx, "unlink: %s", pThis->to.p_path);
+		return (1);
+	}
+	if (mkfifo(pThis->to.p_path, from_stat->st_mode)) {
+		warn(pThis->pCtx, "mkfifo: %s", pThis->to.p_path);
+		return (1);
+	}
+	return (pThis->pflag ? copy_file_attribs(pThis, from_stat, -1) : 0);
+}
+
+int
+copy_special(CPUTILSINSTANCE *pThis, struct stat *from_stat, int exists)
+{
+	if (exists && unlink(pThis->to.p_path)) {
+		warn(pThis->pCtx, "unlink: %s", pThis->to.p_path);
+		return (1);
+	}
+	if (mknod(pThis->to.p_path, from_stat->st_mode, from_stat->st_rdev)) {
+		warn(pThis->pCtx, "mknod: %s", pThis->to.p_path);
+		return (1);
+	}
+	return (pThis->pflag ? copy_file_attribs(pThis, from_stat, -1) : 0);
+}
+
+int
+copy_file_attribs(CPUTILSINSTANCE *pThis, struct stat *fs, int fd)
+{
+	/*static*/ struct timeval tv[2];
+	struct stat ts;
+	int rval, gotstat, islink, fdval;
+
+	rval = 0;
+	fdval = fd != -1;
+	islink = !fdval && S_ISLNK(fs->st_mode);
+	fs->st_mode &= S_ISUID | S_ISGID | S_ISVTX |
+		       S_IRWXU | S_IRWXG | S_IRWXO;
+
+#ifdef HAVE_ST_TIMESPEC
+	TIMESPEC_TO_TIMEVAL(&tv[0], &fs->st_atimespec);
+	TIMESPEC_TO_TIMEVAL(&tv[1], &fs->st_mtimespec);
+#else
+        tv[0].tv_sec = fs->st_atime;
+        tv[1].tv_sec = fs->st_mtime;
+        tv[0].tv_usec = tv[1].tv_usec = 0;
+#endif
+	if (islink ? lutimes(pThis->to.p_path, tv) : utimes(pThis->to.p_path, tv)) {
+		warn(pThis->pCtx, "%sutimes: %s", islink ? "l" : "", pThis->to.p_path);
+		rval = 1;
+	}
+	if (fdval ? fstat(fd, &ts) :
+	    (islink ? lstat(pThis->to.p_path, &ts) : stat(pThis->to.p_path, &ts)))
+		gotstat = 0;
+	else {
+		gotstat = 1;
+		ts.st_mode &= S_ISUID | S_ISGID | S_ISVTX |
+			      S_IRWXU | S_IRWXG | S_IRWXO;
+	}
+	/*
+	 * Changing the ownership probably won't succeed, unless we're root
+	 * or POSIX_CHOWN_RESTRICTED is not set.  Set uid/gid before setting
+	 * the mode; current BSD behavior is to remove all setuid bits on
+	 * chown.  If chown fails, lose setuid/setgid bits.
+	 */
+	if (!gotstat || fs->st_uid != ts.st_uid || fs->st_gid != ts.st_gid)
+		if (fdval ? fchown(fd, fs->st_uid, fs->st_gid) :
+		    (islink ? lchown(pThis->to.p_path, fs->st_uid, fs->st_gid) :
+		    chown(pThis->to.p_path, fs->st_uid, fs->st_gid))) {
+			if (errno != EPERM) {
+				warn(pThis->pCtx, "chown: %s", pThis->to.p_path);
+				rval = 1;
+			}
+			fs->st_mode &= ~(S_ISUID | S_ISGID);
+		}
+
+	if (!gotstat || fs->st_mode != ts.st_mode)
+		if (fdval ? fchmod(fd, fs->st_mode) :
+		    (islink ? lchmod(pThis->to.p_path, fs->st_mode) :
+		    chmod(pThis->to.p_path, fs->st_mode))) {
+			warn(pThis->pCtx, "chmod: %s", pThis->to.p_path);
+			rval = 1;
+		}
+
+#ifdef HAVE_ST_FLAGS
+	if (!gotstat || fs->st_flags != ts.st_flags)
+		if (fdval ?
+		    fchflags(fd, fs->st_flags) :
+		    (islink ? (errno = ENOSYS) :
+		    chflags(pThis->to.p_path, fs->st_flags))) {
+			warn(pThis->pCtx, "chflags: %s", pThis->to.p_path);
+			rval = 1;
+		}
+#endif
+
+	return (rval);
+}
+
diff --git a/src/kmk/kmkbuiltin/darwin.c b/src/kmk/kmkbuiltin/darwin.c
new file mode 100644
index 0000000..583d6e1
--- /dev/null
+++ b/src/kmk/kmkbuiltin/darwin.c
@@ -0,0 +1,55 @@
+/* $Id: darwin.c 2591 2012-06-17 20:45:31Z bird $ */
+/** @file
+ * Missing BSD functions on Darwin / Mac OS X.
+ */
+
+/*
+ * Copyright (c) 2006-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "config.h"
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+
+int lchmod(const char *path, mode_t mode)
+{
+    struct stat st;
+    if (lstat(path, &st))
+        return -1;
+    if (S_ISLNK(st.st_mode))
+        return 0; /* pretend success */
+    return chmod(path, mode);
+}
+
+
+int lutimes(const char *path, const struct timeval *tvs)
+{
+    struct stat st;
+    if (lstat(path, &st))
+        return -1;
+    if (S_ISLNK(st.st_mode))
+        return 0; /* pretend success */
+    return utimes(path, tvs);
+}
+
diff --git a/src/kmk/kmkbuiltin/echo.c b/src/kmk/kmkbuiltin/echo.c
new file mode 100644
index 0000000..11dc227
--- /dev/null
+++ b/src/kmk/kmkbuiltin/echo.c
@@ -0,0 +1,125 @@
+/* $Id: echo.c 3192 2018-03-26 20:25:56Z bird $ */
+/** @file
+ * kMk Builtin command - echo
+ */
+
+/*
+ * Copyright (c) 2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "config.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#ifdef _MSC_VER
+# include <io.h>
+#endif
+
+#include "kmkbuiltin.h"
+#include "err.h"
+
+
+int kmk_builtin_echo(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+    int     rcExit = 0;
+    int     iFirst = 1;
+    int     i;
+    char   *pszBuf;
+    size_t  cbBuf;
+
+    /*
+     * Check for the -n option.
+     */
+    int fNoNewLine = 0;
+    if (   argc > iFirst
+        && strcmp(argv[iFirst], "-n") == 0)
+    {
+        iFirst++;
+        fNoNewLine = 1;
+    }
+
+    /*
+     * Calc buffer size and allocate it.
+     */
+    cbBuf = 1 + 1;
+    for (i = 1; i < argc; i++)
+        cbBuf += (i > iFirst) + strlen(argv[i]);
+    pszBuf = (char *)malloc(cbBuf);
+    if (pszBuf)
+    {
+        /*
+         * Assembler the output into the buffer.
+         */
+        char *pszDst = pszBuf;
+        for (i = iFirst; i < argc; i++)
+        {
+            const char *pszArg = argv[i];
+            size_t      cchArg = strlen(pszArg);
+
+            /* Check for "\c" in final argument (same as -n). */
+            if (i + 1 >= argc
+                && cchArg >= 2
+                && pszArg[cchArg - 2] == '\\'
+                && pszArg[cchArg - 1] == 'c')
+            {
+                fNoNewLine = 1;
+                cchArg -= 2;
+            }
+            if (i > iFirst)
+                *pszDst++ = ' ';
+            memcpy(pszDst, pszArg, cchArg);
+            pszDst += cchArg;
+        }
+        if (!fNoNewLine)
+            *pszDst++ = '\n';
+        *pszDst = '\0';
+
+        /*
+         * Push it out.
+         */
+#ifndef KMK_BUILTIN_STANDALONE
+        if (output_write_text(pCtx->pOut, 0, pszBuf, pszDst - pszBuf) == -1)
+            rcExit = err(pCtx, 1, "output_write_text");
+#else
+        if (write(STDOUT_FILENO, pszBuf, pszDst - pszBuf) == -1)
+            rcExit = err(pCtx, 1, "write");
+#endif
+        free(pszBuf);
+    }
+    else
+        rcExit = err(pCtx, 1, "malloc(%lu)", (unsigned long)cbBuf);
+    return rcExit;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_echo", NULL };
+    return kmk_builtin_echo(argc, argv, envp, &Ctx);
+}
+#endif
+
diff --git a/src/kmk/kmkbuiltin/err.c b/src/kmk/kmkbuiltin/err.c
new file mode 100644
index 0000000..bbab335
--- /dev/null
+++ b/src/kmk/kmkbuiltin/err.c
@@ -0,0 +1,340 @@
+/* $Id: err.c 3237 2018-12-25 04:11:26Z bird $ */
+/** @file
+ * Override err.h so we get the program name right.
+ */
+
+/*
+ * Copyright (c) 2005-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+# ifdef HAVE_STDINT_H
+#  include <stdint.h>
+# endif
+#else
+# include <stdlib.h>
+# define snprintf _snprintf
+#endif
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+#include "err.h"
+#if !defined(KMK_BUILTIN_STANDALONE) && !defined(KWORKER)
+# include "../output.h"
+#endif
+
+#ifdef KBUILD_OS_WINDOWS
+/* This is a trick to speed up console output on windows. */
+# include "console.h"
+# undef fwrite
+# define fwrite maybe_con_fwrite
+#endif
+
+int err(PKMKBUILTINCTX pCtx, int eval, const char *fmt, ...)
+{
+    /*
+     * We format into a buffer and pass that onto output.c or fwrite.
+     */
+    int     error = errno;
+    char   *pszToFree = NULL;
+    char    szMsgStack[4096];
+    char   *pszMsg = szMsgStack;
+    size_t  cbMsg = sizeof(szMsgStack);
+    for (;;)
+    {
+        int cchMsg = snprintf(pszMsg, cbMsg, "%s: error: ", pCtx->pszProgName);
+        if (cchMsg < (int)cbMsg - 1 && cchMsg > 0)
+        {
+            int cchMsg2;
+            va_list va;
+            va_start(va, fmt);
+            cchMsg += cchMsg2 = vsnprintf(&pszMsg[cchMsg], cbMsg - cchMsg, fmt, va);
+            va_end(va);
+
+            if (   cchMsg < (int)cbMsg - 1
+                && cchMsg2 >= 0)
+            {
+                cchMsg += cchMsg2 = snprintf(&pszMsg[cchMsg], cbMsg - cchMsg, ": %s\n", strerror(error));
+                if (   cchMsg < (int)cbMsg - 1
+                    && cchMsg2 >= 0)
+                {
+#if !defined(KMK_BUILTIN_STANDALONE) && !defined(KWORKER)
+                    if (pCtx->pOut)
+                        output_write_text(pCtx->pOut, 1 /*is_err*/, pszMsg, cchMsg);
+                    else
+#endif
+                    {
+                        fflush(stdout);
+                        fwrite(pszMsg, cchMsg, 1, stderr);
+                        fflush(stderr); /* paranoia */
+                    }
+                    if (pszToFree)
+                        free(pszToFree);
+                    errno = error;
+                    return eval;
+                }
+            }
+        }
+
+        /* double the buffer size and retry */
+        if (pszToFree)
+            free(pszToFree);
+        cbMsg *= 2;
+        pszToFree = malloc(cbMsg);
+        if (!pszToFree)
+        {
+            fprintf(stderr, "out of memory!\n");
+            errno = error;
+            return eval;
+        }
+    }
+}
+
+
+int errx(PKMKBUILTINCTX pCtx, int eval, const char *fmt, ...)
+{
+    /*
+     * We format into a buffer and pass that onto output.c or fwrite.
+     */
+    char   *pszToFree = NULL;
+    char    szMsgStack[4096];
+    char   *pszMsg = szMsgStack;
+    size_t  cbMsg = sizeof(szMsgStack);
+    for (;;)
+    {
+        int cchMsg = snprintf(pszMsg, cbMsg, "%s: error: ", pCtx->pszProgName);
+        if (cchMsg < (int)cbMsg - 1 && cchMsg > 0)
+        {
+            int cchMsg2;
+            va_list va;
+            va_start(va, fmt);
+            cchMsg += cchMsg2 = vsnprintf(&pszMsg[cchMsg], cbMsg - cchMsg, fmt, va);
+            va_end(va);
+
+            if (   cchMsg < (int)cbMsg - 2
+                && cchMsg2 >= 0)
+            {
+                /* ensure newline */
+                if (pszMsg[cchMsg - 1] != '\n')
+                {
+                    pszMsg[cchMsg++] = '\n';
+                    pszMsg[cchMsg] = '\0';
+                }
+
+#if !defined(KMK_BUILTIN_STANDALONE) && !defined(KWORKER)
+                if (pCtx->pOut)
+                    output_write_text(pCtx->pOut, 1 /*is_err*/, pszMsg, cchMsg);
+                else
+#endif
+                {
+                    fflush(stdout);
+                    fwrite(pszMsg, cchMsg, 1, stderr);
+                    fflush(stderr); /* paranoia */
+                }
+                if (pszToFree)
+                    free(pszToFree);
+                return eval;
+            }
+        }
+
+        /* double the buffer size and retry */
+        if (pszToFree)
+            free(pszToFree);
+        cbMsg *= 2;
+        pszToFree = malloc(cbMsg);
+        if (!pszToFree)
+        {
+            fprintf(stderr, "out of memory!\n");
+            return eval;
+        }
+    }
+}
+
+void warn(PKMKBUILTINCTX pCtx, const char *fmt, ...)
+{
+    /*
+     * We format into a buffer and pass that onto output.c or fwrite.
+     */
+    int     error = errno;
+    char   *pszToFree = NULL;
+    char    szMsgStack[4096];
+    char   *pszMsg = szMsgStack;
+    size_t  cbMsg = sizeof(szMsgStack);
+    for (;;)
+    {
+        int cchMsg = snprintf(pszMsg, cbMsg, "%s: ", pCtx->pszProgName);
+        if (cchMsg < (int)cbMsg - 1 && cchMsg > 0)
+        {
+            int cchMsg2;
+            va_list va;
+            va_start(va, fmt);
+            cchMsg += cchMsg2 = vsnprintf(&pszMsg[cchMsg], cbMsg - cchMsg, fmt, va);
+            va_end(va);
+
+            if (   cchMsg < (int)cbMsg - 1
+                && cchMsg2 >= 0)
+            {
+                cchMsg += cchMsg2 = snprintf(&pszMsg[cchMsg], cbMsg - cchMsg, ": %s\n", strerror(error));
+                if (   cchMsg < (int)cbMsg - 1
+                    && cchMsg2 >= 0)
+                {
+#if !defined(KMK_BUILTIN_STANDALONE) && !defined(KWORKER)
+                    if (pCtx->pOut)
+                        output_write_text(pCtx->pOut, 1 /*is_err*/, pszMsg, cchMsg);
+                    else
+#endif
+                    {
+                        fflush(stdout);
+                        fwrite(pszMsg, cchMsg, 1, stderr);
+                        fflush(stderr); /* paranoia */
+                    }
+                    if (pszToFree)
+                        free(pszToFree);
+                    errno = error;
+                    return;
+                }
+            }
+        }
+
+        /* double the buffer size and retry */
+        if (pszToFree)
+            free(pszToFree);
+        cbMsg *= 2;
+        pszToFree = malloc(cbMsg);
+        if (!pszToFree)
+        {
+            fprintf(stderr, "out of memory!\n");
+            errno = error;
+            return;
+        }
+    }
+}
+
+void warnx(PKMKBUILTINCTX pCtx, const char *fmt, ...)
+{
+    /*
+     * We format into a buffer and pass that onto output.c or fwrite.
+     */
+    char   *pszToFree = NULL;
+    char    szMsgStack[4096];
+    char   *pszMsg = szMsgStack;
+    size_t  cbMsg = sizeof(szMsgStack);
+    for (;;)
+    {
+        int cchMsg = snprintf(pszMsg, cbMsg, "%s: ", pCtx->pszProgName);
+        if (cchMsg < (int)cbMsg - 1 && cchMsg > 0)
+        {
+            int cchMsg2;
+            va_list va;
+            va_start(va, fmt);
+            cchMsg += cchMsg2 = vsnprintf(&pszMsg[cchMsg], cbMsg - cchMsg, fmt, va);
+            va_end(va);
+
+            if (   cchMsg < (int)cbMsg - 2
+                && cchMsg2 >= 0)
+            {
+                /* ensure newline */
+                if (pszMsg[cchMsg - 1] != '\n')
+                {
+                    pszMsg[cchMsg++] = '\n';
+                    pszMsg[cchMsg] = '\0';
+                }
+
+#if !defined(KMK_BUILTIN_STANDALONE) && !defined(KWORKER)
+                if (pCtx->pOut)
+                    output_write_text(pCtx->pOut, 1 /*is_err*/, pszMsg, cchMsg);
+                else
+#endif
+                {
+                    fflush(stdout);
+                    fwrite(pszMsg, cchMsg, 1, stderr);
+                    fflush(stderr); /* paranoia */
+                }
+                if (pszToFree)
+                    free(pszToFree);
+                return;
+            }
+        }
+
+        /* double the buffer size and retry */
+        if (pszToFree)
+            free(pszToFree);
+        cbMsg *= 2;
+        pszToFree = malloc(cbMsg);
+        if (!pszToFree)
+        {
+            fprintf(stderr, "out of memory!\n");
+            return;
+        }
+    }
+}
+
+void kmk_builtin_ctx_printf(PKMKBUILTINCTX pCtx, int fIsErr, const char *pszFormat, ...)
+{
+    /*
+     * We format into a buffer and pass that onto output.c or fwrite.
+     */
+    char   *pszToFree = NULL;
+    char    szMsgStack[4096];
+    char   *pszMsg = szMsgStack;
+    size_t  cbMsg = sizeof(szMsgStack);
+    for (;;)
+    {
+        int cchMsg;
+        va_list va;
+        va_start(va, pszFormat);
+        cchMsg = vsnprintf(pszMsg, cbMsg, pszFormat, va);
+        va_end(va);
+        if (cchMsg < (int)cbMsg - 1 && cchMsg > 0)
+        {
+#if !defined(KMK_BUILTIN_STANDALONE) && !defined(KWORKER)
+            if (pCtx->pOut)
+                output_write_text(pCtx->pOut, fIsErr, pszMsg, cchMsg);
+            else
+#endif
+            {
+                fwrite(pszMsg, cchMsg, 1, fIsErr ? stderr : stdout);
+                fflush(fIsErr ? stderr : stdout);
+            }
+            if (pszToFree)
+                free(pszToFree);
+            return;
+        }
+
+        /* double the buffer size and retry */
+        if (pszToFree)
+            free(pszToFree);
+        cbMsg *= 2;
+        pszToFree = malloc(cbMsg);
+        if (!pszToFree)
+        {
+            fprintf(stderr, "out of memory!\n");
+            return;
+        }
+    }
+}
+
diff --git a/src/kmk/kmkbuiltin/err.h b/src/kmk/kmkbuiltin/err.h
new file mode 100644
index 0000000..4150e42
--- /dev/null
+++ b/src/kmk/kmkbuiltin/err.h
@@ -0,0 +1,38 @@
+/* $Id: err.h 3192 2018-03-26 20:25:56Z bird $ */
+/** @file
+ * Override err.h stuff so we get the program names right.
+ */
+
+/*
+ * Copyright (c) 2005-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef ___err_h
+#define ___err_h
+
+#include "../kmkbuiltin.h"
+
+int  err(PKMKBUILTINCTX pCtx, int eval, const char *fmt, ...);
+int  errx(PKMKBUILTINCTX pCtx, int eval, const char *fmt, ...);
+void warn(PKMKBUILTINCTX pCtx, const char *fmt, ...);
+void warnx(PKMKBUILTINCTX pCtx, const char *fmt, ...);
+void kmk_builtin_ctx_printf(PKMKBUILTINCTX pCtx, int fIsErr, const char *pszFormat, ...);
+
+#endif
+
diff --git a/src/kmk/kmkbuiltin/expr.c b/src/kmk/kmkbuiltin/expr.c
new file mode 100644
index 0000000..350c2a3
--- /dev/null
+++ b/src/kmk/kmkbuiltin/expr.c
@@ -0,0 +1,617 @@
+/*	$OpenBSD: expr.c,v 1.17 2006/06/21 18:28:24 deraadt Exp $	*/
+/*	$NetBSD: expr.c,v 1.3.6.1 1996/06/04 20:41:47 cgd Exp $	*/
+
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Public domain.
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <locale.h>
+#include <ctype.h>
+#ifdef KMK_WITH_REGEX
+#include <regex.h>
+#endif
+#include <setjmp.h>
+#include <assert.h>
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+#include "err.h"
+#include "kmkbuiltin.h"
+
+typedef struct EXPRINSTANCE *PEXPRINSTANCE;
+
+static struct val	*make_int(PEXPRINSTANCE, int);
+static struct val	*make_str(PEXPRINSTANCE, char *);
+static void		 free_value(PEXPRINSTANCE, struct val *);
+static int		 is_integer(struct val *, int *);
+static int		 to_integer(PEXPRINSTANCE, struct val *);
+static void		 to_string(PEXPRINSTANCE, struct val *);
+static int		 is_zero_or_null(PEXPRINSTANCE, struct val *);
+static void		 nexttoken(PEXPRINSTANCE, int);
+static struct val	*eval6(PEXPRINSTANCE);
+static struct val	*eval5(PEXPRINSTANCE);
+static struct val	*eval4(PEXPRINSTANCE);
+static struct val	*eval3(PEXPRINSTANCE);
+static struct val	*eval2(PEXPRINSTANCE);
+static struct val	*eval1(PEXPRINSTANCE);
+static struct val	*eval0(PEXPRINSTANCE);
+
+enum token {
+	OR, AND, EQ, LT, GT, ADD, SUB, MUL, DIV, MOD, MATCH, RP, LP,
+	NE, LE, GE, OPERAND, EOI
+};
+
+struct val {
+	enum {
+		integer,
+		string
+	} type;
+
+	union {
+		char	       *s;
+		int		i;
+	} u;
+};
+
+typedef struct EXPRINSTANCE {
+    PKMKBUILTINCTX  pCtx;
+    enum token      token;
+    struct val     *tokval;
+    char          **av;
+    jmp_buf         g_expr_jmp;
+    void          **recorded_allocations;
+    int             num_recorded_allocations;
+} EXPRINSTANCE;
+
+
+static void expr_mem_record_alloc(PEXPRINSTANCE pThis, void *ptr)
+{
+	if (!(pThis->num_recorded_allocations & 31)) {
+    		void *newtab = realloc(pThis->recorded_allocations, (pThis->num_recorded_allocations + 33) * sizeof(void *));
+		if (!newtab)
+			longjmp(pThis->g_expr_jmp, err(pThis->pCtx, 3, NULL));
+		pThis->recorded_allocations = (void **)newtab;
+	}
+	pThis->recorded_allocations[pThis->num_recorded_allocations++] = ptr;
+}
+
+
+static void expr_mem_record_free(PEXPRINSTANCE pThis, void *ptr)
+{
+	int i = pThis->num_recorded_allocations;
+	while (i-- > 0)
+		if (pThis->recorded_allocations[i] == ptr) {
+			pThis->num_recorded_allocations--;
+			pThis->recorded_allocations[i] = pThis->recorded_allocations[pThis->num_recorded_allocations];
+			return;
+		}
+	assert(i >= 0);
+}
+
+static void expr_mem_init(PEXPRINSTANCE pThis)
+{
+	pThis->num_recorded_allocations = 0;
+	pThis->recorded_allocations = NULL;
+}
+
+static void expr_mem_cleanup(PEXPRINSTANCE pThis)
+{
+	if (pThis->recorded_allocations) {
+		while (pThis->num_recorded_allocations-- > 0)
+			free(pThis->recorded_allocations[pThis->num_recorded_allocations]);
+		free(pThis->recorded_allocations);
+		pThis->recorded_allocations = NULL;
+	}
+}
+
+
+static struct val *
+make_int(PEXPRINSTANCE pThis, int i)
+{
+	struct val     *vp;
+
+	vp = (struct val *) malloc(sizeof(*vp));
+	if (vp == NULL)
+		longjmp(pThis->g_expr_jmp, err(pThis->pCtx, 3, NULL));
+	expr_mem_record_alloc(pThis, vp);
+	vp->type = integer;
+	vp->u.i = i;
+	return vp;
+}
+
+
+static struct val *
+make_str(PEXPRINSTANCE pThis, char *s)
+{
+	struct val     *vp;
+
+	vp = (struct val *) malloc(sizeof(*vp));
+	if (vp == NULL || ((vp->u.s = strdup(s)) == NULL))
+		longjmp(pThis->g_expr_jmp, err(pThis->pCtx, 3, NULL));
+	expr_mem_record_alloc(pThis, vp->u.s);
+	expr_mem_record_alloc(pThis, vp);
+	vp->type = string;
+	return vp;
+}
+
+
+static void
+free_value(PEXPRINSTANCE pThis, struct val *vp)
+{
+	if (vp->type == string) {
+		expr_mem_record_free(pThis, vp->u.s);
+		free(vp->u.s);
+	}
+	free(vp);
+	expr_mem_record_free(pThis, vp);
+}
+
+
+/* determine if vp is an integer; if so, return it's value in *r */
+static int
+is_integer(struct val *vp, int *r)
+{
+	char	       *s;
+	int		neg;
+	int		i;
+
+	if (vp->type == integer) {
+		*r = vp->u.i;
+		return 1;
+	}
+
+	/*
+	 * POSIX.2 defines an "integer" as an optional unary minus
+	 * followed by digits.
+	 */
+	s = vp->u.s;
+	i = 0;
+
+	neg = (*s == '-');
+	if (neg)
+		s++;
+
+	while (*s) {
+		if (!isdigit(*s))
+			return 0;
+
+		i *= 10;
+		i += *s - '0';
+
+		s++;
+	}
+
+	if (neg)
+		i *= -1;
+
+	*r = i;
+	return 1;
+}
+
+
+/* coerce to vp to an integer */
+static int
+to_integer(PEXPRINSTANCE pThis, struct val *vp)
+{
+	int		r;
+
+	if (vp->type == integer)
+		return 1;
+
+	if (is_integer(vp, &r)) {
+		expr_mem_record_free(pThis, vp->u.s);
+		free(vp->u.s);
+		vp->u.i = r;
+		vp->type = integer;
+		return 1;
+	}
+
+	return 0;
+}
+
+
+/* coerce to vp to an string */
+static void
+to_string(PEXPRINSTANCE pThis, struct val *vp)
+{
+	char	       *tmp;
+
+	if (vp->type == string)
+		return;
+
+	if (asprintf(&tmp, "%d", vp->u.i) == -1)
+		longjmp(pThis->g_expr_jmp, err(pThis->pCtx, 3, NULL));
+	expr_mem_record_alloc(pThis, tmp);
+
+	vp->type = string;
+	vp->u.s = tmp;
+}
+
+static int
+is_zero_or_null(PEXPRINSTANCE pThis, struct val *vp)
+{
+	if (vp->type == integer) {
+		return (vp->u.i == 0);
+	} else {
+		return (*vp->u.s == 0 || (to_integer(pThis, vp) && vp->u.i == 0));
+	}
+	/* NOTREACHED */
+}
+
+static void
+nexttoken(PEXPRINSTANCE pThis, int pat)
+{
+	char	       *p;
+
+	if ((p = *pThis->av) == NULL) {
+		pThis->token = EOI;
+		return;
+	}
+	pThis->av++;
+
+
+	if (pat == 0 && p[0] != '\0') {
+		if (p[1] == '\0') {
+			const char     *x = "|&=<>+-*/%:()";
+			char	       *i;	/* index */
+
+			if ((i = strchr(x, *p)) != NULL) {
+				pThis->token = i - x;
+				return;
+			}
+		} else if (p[1] == '=' && p[2] == '\0') {
+			switch (*p) {
+			case '<':
+				pThis->token = LE;
+				return;
+			case '>':
+				pThis->token = GE;
+				return;
+			case '!':
+				pThis->token = NE;
+				return;
+			}
+		}
+	}
+	pThis->tokval = make_str(pThis, p);
+	pThis->token = OPERAND;
+	return;
+}
+
+#ifdef __GNUC__
+__attribute__((noreturn))
+#endif
+#ifdef _MSC_VER
+__declspec(noreturn)
+#endif
+static void
+error(PEXPRINSTANCE pThis)
+{
+	longjmp(pThis->g_expr_jmp, errx(pThis->pCtx, 2, "syntax error"));
+	/* NOTREACHED */
+}
+
+static struct val *
+eval6(PEXPRINSTANCE pThis)
+{
+	struct val     *v;
+
+	if (pThis->token == OPERAND) {
+		nexttoken(pThis, 0);
+		return pThis->tokval;
+
+	} else if (pThis->token == RP) {
+		nexttoken(pThis, 0);
+		v = eval0(pThis);
+
+		if (pThis->token != LP) {
+			error(pThis);
+			/* NOTREACHED */
+		}
+		nexttoken(pThis, 0);
+		return v;
+	} else {
+		error(pThis);
+	}
+	/* NOTREACHED */
+}
+
+/* Parse and evaluate match (regex) expressions */
+static struct val *
+eval5(PEXPRINSTANCE pThis)
+{
+#ifdef KMK_WITH_REGEX
+	regex_t		rp;
+	regmatch_t	rm[2];
+	char		errbuf[256];
+	int		eval;
+	struct val     *r;
+	struct val     *v;
+#endif
+	struct val     *l;
+
+	l = eval6(pThis);
+	while (pThis->token == MATCH) {
+#ifdef KMK_WITH_REGEX
+		nexttoken(pThis, 1);
+		r = eval6(pThis);
+
+		/* coerce to both arguments to strings */
+		to_string(pThis, l);
+		to_string(pThis, r);
+
+		/* compile regular expression */
+		if ((eval = regcomp(&rp, r->u.s, 0)) != 0) {
+			regerror(eval, &rp, errbuf, sizeof(errbuf));
+			longjmp(pThis->g_expr_jmp, errx(pThis->pCtx, 2, "%s", errbuf));
+		}
+
+		/* compare string against pattern --  remember that patterns
+		   are anchored to the beginning of the line */
+		if (regexec(&rp, l->u.s, 2, rm, 0) == 0 && rm[0].rm_so == 0) {
+			if (rm[1].rm_so >= 0) {
+				*(l->u.s + rm[1].rm_eo) = '\0';
+				v = make_str(pThis, l->u.s + rm[1].rm_so);
+
+			} else {
+				v = make_int(pThis, (int)(rm[0].rm_eo - rm[0].rm_so));
+			}
+		} else {
+			if (rp.re_nsub == 0) {
+				v = make_int(pThis, 0);
+			} else {
+				v = make_str(pThis, "");
+			}
+		}
+
+		/* free arguments and pattern buffer */
+		free_value(pThis, l);
+		free_value(pThis, r);
+		regfree(&rp);
+
+		l = v;
+#else
+		longjmp(pThis->g_expr_jmp, errx(pThis->pCtx, 2, "regex not supported, sorry."));
+#endif
+	}
+
+	return l;
+}
+
+/* Parse and evaluate multiplication and division expressions */
+static struct val *
+eval4(PEXPRINSTANCE pThis)
+{
+	struct val     *l, *r;
+	enum token	op;
+
+	l = eval5(pThis);
+	while ((op = pThis->token) == MUL || op == DIV || op == MOD) {
+		nexttoken(pThis, 0);
+		r = eval5(pThis);
+
+		if (!to_integer(pThis, l) || !to_integer(pThis, r)) {
+			longjmp(pThis->g_expr_jmp, errx(pThis->pCtx, 2, "non-numeric argument"));
+		}
+
+		if (op == MUL) {
+			l->u.i *= r->u.i;
+		} else {
+			if (r->u.i == 0) {
+				longjmp(pThis->g_expr_jmp, errx(pThis->pCtx, 2, "division by zero"));
+			}
+			if (op == DIV) {
+				l->u.i /= r->u.i;
+			} else {
+				l->u.i %= r->u.i;
+			}
+		}
+
+		free_value(pThis, r);
+	}
+
+	return l;
+}
+
+/* Parse and evaluate addition and subtraction expressions */
+static struct val *
+eval3(PEXPRINSTANCE pThis)
+{
+	struct val     *l, *r;
+	enum token	op;
+
+	l = eval4(pThis);
+	while ((op = pThis->token) == ADD || op == SUB) {
+		nexttoken(pThis, 0);
+		r = eval4(pThis);
+
+		if (!to_integer(pThis, l) || !to_integer(pThis, r)) {
+			longjmp(pThis->g_expr_jmp, errx(pThis->pCtx, 2, "non-numeric argument"));
+		}
+
+		if (op == ADD) {
+			l->u.i += r->u.i;
+		} else {
+			l->u.i -= r->u.i;
+		}
+
+		free_value(pThis, r);
+	}
+
+	return l;
+}
+
+/* Parse and evaluate comparison expressions */
+static struct val *
+eval2(PEXPRINSTANCE pThis)
+{
+	struct val     *l, *r;
+	enum token	op;
+	int		v = 0, li, ri;
+
+	l = eval3(pThis);
+	while ((op = pThis->token) == EQ || op == NE || op == LT || op == GT ||
+	    op == LE || op == GE) {
+		nexttoken(pThis, 0);
+		r = eval3(pThis);
+
+		if (is_integer(l, &li) && is_integer(r, &ri)) {
+			switch (op) {
+			case GT:
+				v = (li >  ri);
+				break;
+			case GE:
+				v = (li >= ri);
+				break;
+			case LT:
+				v = (li <  ri);
+				break;
+			case LE:
+				v = (li <= ri);
+				break;
+			case EQ:
+				v = (li == ri);
+				break;
+			case NE:
+				v = (li != ri);
+				break;
+			default:
+				break;
+			}
+		} else {
+			to_string(pThis, l);
+			to_string(pThis, r);
+
+			switch (op) {
+			case GT:
+				v = (strcoll(l->u.s, r->u.s) > 0);
+				break;
+			case GE:
+				v = (strcoll(l->u.s, r->u.s) >= 0);
+				break;
+			case LT:
+				v = (strcoll(l->u.s, r->u.s) < 0);
+				break;
+			case LE:
+				v = (strcoll(l->u.s, r->u.s) <= 0);
+				break;
+			case EQ:
+				v = (strcoll(l->u.s, r->u.s) == 0);
+				break;
+			case NE:
+				v = (strcoll(l->u.s, r->u.s) != 0);
+				break;
+			default:
+				break;
+			}
+		}
+
+		free_value(pThis, l);
+		free_value(pThis, r);
+		l = make_int(pThis, v);
+	}
+
+	return l;
+}
+
+/* Parse and evaluate & expressions */
+static struct val *
+eval1(PEXPRINSTANCE pThis)
+{
+	struct val     *l, *r;
+
+	l = eval2(pThis);
+	while (pThis->token == AND) {
+		nexttoken(pThis, 0);
+		r = eval2(pThis);
+
+		if (is_zero_or_null(pThis, l) || is_zero_or_null(pThis, r)) {
+			free_value(pThis, l);
+			free_value(pThis, r);
+			l = make_int(pThis, 0);
+		} else {
+			free_value(pThis, r);
+		}
+	}
+
+	return l;
+}
+
+/* Parse and evaluate | expressions */
+static struct val *
+eval0(PEXPRINSTANCE pThis)
+{
+	struct val     *l, *r;
+
+	l = eval1(pThis);
+	while (pThis->token == OR) {
+		nexttoken(pThis, 0);
+		r = eval1(pThis);
+
+		if (is_zero_or_null(pThis, l)) {
+			free_value(pThis, l);
+			l = r;
+		} else {
+			free_value(pThis, r);
+		}
+	}
+
+	return l;
+}
+
+
+int
+kmk_builtin_expr(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+	EXPRINSTANCE This;
+	struct val *vp;
+	int rval;
+
+	if (argc > 1 && !strcmp(argv[1], "--"))
+		argv++;
+
+	/* Init globals */
+	This.pCtx = pCtx;
+	This.token = 0;
+	This.tokval = 0;
+	This.av = argv + 1;
+	expr_mem_init(&This);
+
+	rval = setjmp(This.g_expr_jmp);
+	if (!rval) {
+		nexttoken(&This, 0);
+		vp = eval0(&This);
+
+		if (This.token != EOI) {
+			error(&This);
+			/* NOTREACHED */
+		}
+
+		if (vp->type == integer)
+			kmk_builtin_ctx_printf(pCtx, 0, "%d\n", vp->u.i);
+		else
+			kmk_builtin_ctx_printf(pCtx, 0, "%s\n", vp->u.s);
+
+		rval = is_zero_or_null(&This, vp);
+	}
+	/* else: longjmp */
+
+	/* cleanup */
+	expr_mem_cleanup(&This);
+	return rval;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+	KMKBUILTINCTX Ctx = { "kmk_expr", NULL };
+	(void) setlocale(LC_ALL, "");
+	return kmk_builtin_expr(argc, argv, envp, &Ctx);
+}
+#endif
+
diff --git a/src/kmk/kmkbuiltin/fts.c b/src/kmk/kmkbuiltin/fts.c
new file mode 100644
index 0000000..10098b9
--- /dev/null
+++ b/src/kmk/kmkbuiltin/fts.c
@@ -0,0 +1,1461 @@
+/*	$NetBSD: __fts13.c,v 1.44 2005/01/19 00:59:48 mycroft Exp $	*/
+
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifdef __sun__
+# define _POSIX_C_SOURCE 199506L /* for dirfd() */
+# define __EXTENSIONS__  1       /* for u_short and friends */
+#endif
+#if HAVE_NBTOOL_CONFIG_H
+#include "nbtool_config.h"
+#endif
+
+/*#include <sys/cdefs.h>*/
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)fts.c	8.6 (Berkeley) 8/14/94";
+#else
+__RCSID("$NetBSD: __fts13.c,v 1.44 2005/01/19 00:59:48 mycroft Exp $");
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+#include "config.h"
+/*#include "namespace.h"*/
+#ifndef _MSC_VER
+#include <sys/param.h>
+#endif
+#include <sys/stat.h>
+
+#include <assert.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include "ftsfake.h"
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+#include "kmkbuiltin.h" /* MAXPATHLEN for GNU/hurd */
+
+#ifdef __sun__
+# include "solfakes.h"
+# define dirfd(dir) ((dir)->d_fd)
+#endif
+#ifdef _MSC_VER
+# include "mscfakes.h"
+# define dirfd(dir) -1
+#endif
+
+#if ! HAVE_NBTOOL_CONFIG_H
+# if !defined(__sun__) && !defined(__gnu_linux__) && !defined(__HAIKU__)
+#  define HAVE_STRUCT_DIRENT_D_NAMLEN 1
+# endif
+#endif
+
+#if 0
+#ifdef __weak_alias
+#ifdef __LIBC12_SOURCE__
+__weak_alias(fts_children,_fts_children)
+__weak_alias(fts_close,_fts_close)
+__weak_alias(fts_open,_fts_open)
+__weak_alias(fts_read,_fts_read)
+__weak_alias(fts_set,_fts_set)
+#endif /* __LIBC12_SOURCE__ */
+#endif /* __weak_alias */
+#endif
+
+#ifdef __LIBC12_SOURCE__
+#define	STAT	stat12
+#else
+#define	STAT	stat
+#endif
+
+#ifdef __LIBC12_SOURCE__
+__warn_references(fts_children,
+    "warning: reference to compatibility fts_children();"
+    " include <fts.h> for correct reference")
+__warn_references(fts_close,
+    "warning: reference to compatibility fts_close();"
+    " include <fts.h> for correct reference")
+__warn_references(fts_open,
+    "warning: reference to compatibility fts_open();"
+    " include <fts.h> for correct reference")
+__warn_references(fts_read,
+    "warning: reference to compatibility fts_read();"
+    " include <fts.h> for correct reference")
+__warn_references(fts_set,
+    "warning: reference to compatibility fts_set();"
+    " include <fts.h> for correct reference")
+#endif
+
+static FTSENT	*fts_alloc(FTS *, const char *, size_t);
+static FTSENT	*fts_build(FTS *, int);
+static void	 fts_lfree(FTSENT *);
+static void	 fts_load(FTS *, FTSENT *);
+static size_t	 fts_maxarglen(char * const *);
+static size_t	 fts_pow2(size_t);
+static int	 fts_palloc(FTS *, size_t);
+static void	 fts_padjust(FTS *, FTSENT *);
+static FTSENT	*fts_sort(FTS *, FTSENT *, size_t);
+static u_short	 fts_stat(FTS *, FTSENT *, int);
+#ifdef _MSC_VER
+static u_short   fts_stat_dirent(FTS *sp, FTSENT *p, int follow, struct dirent *pDirEnt);
+#endif
+static int	 fts_safe_changedir(const FTS *, const FTSENT *, int,
+    const char *);
+
+#ifdef _MSC_VER
+# undef HAVE_FCHDIR
+#endif
+
+#if defined(__EMX__) || defined(_MSC_VER)
+# define NEED_STRRSLASH
+# define IS_SLASH(ch)   ( (ch) == '/' || (ch) == '\\' )
+#else
+# define HAVE_FCHDIR
+# define IS_SLASH(ch)   ( (ch) == '/' )
+#endif
+
+#define	ISDOT(a)	(a[0] == '.' && (!a[1] || (a[1] == '.' && !a[2])))
+
+#define	CLR(opt)	(sp->fts_options &= ~(opt))
+#define	ISSET(opt)	(sp->fts_options & (opt))
+#define	SET(opt)	(sp->fts_options |= (opt))
+
+#define	CHDIR(sp, path)	(!ISSET(FTS_NOCHDIR) && chdir(path))
+#ifdef HAVE_FCHDIR
+#define	FCHDIR(sp, fd)	(!ISSET(FTS_NOCHDIR) && fchdir(fd))
+#else
+#define	FCHDIR(sp, rdir) CHDIR(sp, rdir)
+#endif
+
+
+/* fts_build flags */
+#define	BCHILD		1		/* fts_children */
+#define	BNAMES		2		/* fts_children, names only */
+#define	BREAD		3		/* fts_read */
+
+#ifndef DTF_HIDEW
+#undef FTS_WHITEOUT
+#endif
+
+#ifndef _DIAGASSERT
+#define _DIAGASSERT assert
+#endif
+
+
+FTS *
+fts_open(argv, options, compar)
+	char * const *argv;
+	int options;
+	int (*compar)(const FTSENT **, const FTSENT **);
+{
+	FTS *sp;
+	FTSENT *p, *root;
+	size_t nitems;
+	FTSENT *parent, *tmp = NULL;	/* pacify gcc */
+	size_t len;
+
+	_DIAGASSERT(argv != NULL);
+
+	/* Options check. */
+	if (options & ~FTS_OPTIONMASK) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	/* Allocate/initialize the stream */
+	if ((sp = malloc((u_int)sizeof(FTS))) == NULL)
+		return (NULL);
+	memset(sp, 0, sizeof(FTS));
+	sp->fts_compar = compar;
+	sp->fts_options = options;
+
+	/* Logical walks turn on NOCHDIR; symbolic links are too hard. */
+	if (ISSET(FTS_LOGICAL))
+		SET(FTS_NOCHDIR);
+
+	/*
+	 * Start out with 1K of path space, and enough, in any case,
+	 * to hold the user's paths.
+	 */
+	if (fts_palloc(sp, MAX(fts_maxarglen(argv), MAXPATHLEN)))
+		goto mem1;
+
+	/* Allocate/initialize root's parent. */
+	if ((parent = fts_alloc(sp, "", 0)) == NULL)
+		goto mem2;
+	parent->fts_level = FTS_ROOTPARENTLEVEL;
+
+	/* Allocate/initialize root(s). */
+	for (root = NULL, nitems = 0; *argv; ++argv, ++nitems) {
+		/* Don't allow zero-length paths. */
+		if ((len = strlen(*argv)) == 0) {
+			errno = ENOENT;
+			goto mem3;
+		}
+
+		if ((p = fts_alloc(sp, *argv, len)) == NULL)
+			goto mem3;
+		p->fts_level = FTS_ROOTLEVEL;
+		p->fts_parent = parent;
+		p->fts_accpath = p->fts_name;
+		p->fts_info = fts_stat(sp, p, ISSET(FTS_COMFOLLOW));
+
+		/* Command-line "." and ".." are real directories. */
+		if (p->fts_info == FTS_DOT)
+			p->fts_info = FTS_D;
+
+		/*
+		 * If comparison routine supplied, traverse in sorted
+		 * order; otherwise traverse in the order specified.
+		 */
+		if (compar) {
+			p->fts_link = root;
+			root = p;
+		} else {
+			p->fts_link = NULL;
+			if (root == NULL)
+				tmp = root = p;
+			else {
+				tmp->fts_link = p;
+				tmp = p;
+			}
+		}
+	}
+	if (compar && nitems > 1)
+		root = fts_sort(sp, root, nitems);
+
+	/*
+	 * Allocate a dummy pointer and make fts_read think that we've just
+	 * finished the node before the root(s); set p->fts_info to FTS_INIT
+	 * so that everything about the "current" node is ignored.
+	 */
+	if ((sp->fts_cur = fts_alloc(sp, "", 0)) == NULL)
+		goto mem3;
+	sp->fts_cur->fts_link = root;
+	sp->fts_cur->fts_info = FTS_INIT;
+
+	/*
+	 * If using chdir(2), grab a file descriptor pointing to dot to insure
+	 * that we can get back here; this could be avoided for some paths,
+	 * but almost certainly not worth the effort.  Slashes, symbolic links,
+	 * and ".." are all fairly nasty problems.  Note, if we can't get the
+	 * descriptor we run anyway, just more slowly.
+	 */
+	if (!ISSET(FTS_NOCHDIR)) {
+#ifdef HAVE_FCHDIR
+		if ((sp->fts_rfd = open(".", O_RDONLY | KMK_OPEN_NO_INHERIT, 0)) == -1)
+			SET(FTS_NOCHDIR);
+		else if (fcntl(sp->fts_rfd, F_SETFD, FD_CLOEXEC) == -1) {
+			close(sp->fts_rfd);
+			SET(FTS_NOCHDIR);
+		}
+#else
+		if ((sp->fts_rdir = getcwd(NULL, 0)) != NULL)
+			SET(FTS_NOCHDIR);
+#endif
+	}
+
+	return (sp);
+
+mem3:	fts_lfree(root);
+	free(parent);
+mem2:	free(sp->fts_path);
+mem1:	free(sp);
+	return (NULL);
+}
+
+#ifdef NEED_STRRSLASH
+static char *strrslash(register char *psz)
+{
+    register char ch;
+    char *pszLast = NULL;
+    for (; (ch = *psz); psz++)
+        switch (ch)
+        {
+            case '/':
+            case '\\':
+            case ':':
+                pszLast = psz;
+                break;
+        }
+    return pszLast;
+}
+#endif
+
+static void
+fts_load(sp, p)
+	FTS *sp;
+	FTSENT *p;
+{
+	size_t len;
+	char *cp;
+
+	_DIAGASSERT(sp != NULL);
+	_DIAGASSERT(p != NULL);
+
+	/*
+	 * Load the stream structure for the next traversal.  Since we don't
+	 * actually enter the directory until after the preorder visit, set
+	 * the fts_accpath field specially so the chdir gets done to the right
+	 * place and the user can access the first node.  From fts_open it's
+	 * known that the path will fit.
+	 */
+	len = p->fts_pathlen = p->fts_namelen;
+	memmove(sp->fts_path, p->fts_name, len + 1);
+#ifdef NEED_STRRSLASH
+	if ((cp = strrslash(p->fts_name)) && (cp != p->fts_name || cp[1])) {
+#else
+	if ((cp = strrchr(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) {
+#endif
+		len = strlen(++cp);
+		memmove(p->fts_name, cp, len + 1);
+		p->fts_namelen = len;
+	}
+	p->fts_accpath = p->fts_path = sp->fts_path;
+	sp->fts_dev = p->fts_dev;
+}
+
+int
+fts_close(sp)
+	FTS *sp;
+{
+	FTSENT *freep, *p;
+	int saved_errno = 0;
+
+	_DIAGASSERT(sp != NULL);
+
+	/*
+	 * This still works if we haven't read anything -- the dummy structure
+	 * points to the root list, so we step through to the end of the root
+	 * list which has a valid parent pointer.
+	 */
+	if (sp->fts_cur) {
+#ifndef _MSC_VER
+		if (ISSET(FTS_SYMFOLLOW))
+			(void)close(sp->fts_cur->fts_symfd);
+#endif
+		for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
+			freep = p;
+			p = p->fts_link ? p->fts_link : p->fts_parent;
+			free(freep);
+		}
+		free(p);
+	}
+
+	/* Free up child linked list, sort array, path buffer. */
+	if (sp->fts_child)
+		fts_lfree(sp->fts_child);
+	if (sp->fts_array)
+		free(sp->fts_array);
+	free(sp->fts_path);
+
+	/* Return to original directory, save errno if necessary. */
+	if (!ISSET(FTS_NOCHDIR)) {
+#ifdef HAVE_FCHDIR
+		if (fchdir(sp->fts_rfd))
+			saved_errno = errno;
+		(void)close(sp->fts_rfd);
+#else
+		if (chdir(sp->fts_rdir))
+			saved_errno =  errno;
+		free(sp->fts_rdir);
+		sp->fts_rdir = NULL;
+#endif
+	}
+
+	/* Free up the stream pointer. */
+	free(sp);
+	/* ISSET() is illegal after this, since the macro touches sp */
+
+	/* Set errno and return. */
+	if (saved_errno) {
+		errno = saved_errno;
+		return (-1);
+	}
+	return (0);
+}
+
+/*
+ * Special case a root of "/" so that slashes aren't appended which would
+ * cause paths to be written as "//foo".
+ */
+#define	NAPPEND(p)							\
+	(p->fts_level == FTS_ROOTLEVEL && p->fts_pathlen == 1 &&	\
+	    IS_SLASH(p->fts_path[0]) ? 0 : p->fts_pathlen)
+
+FTSENT *
+fts_read(sp)
+	FTS *sp;
+{
+	FTSENT *p, *tmp;
+	int instr;
+	char *t;
+	int saved_errno;
+
+	_DIAGASSERT(sp != NULL);
+
+	/* If finished or unrecoverable error, return NULL. */
+	if (sp->fts_cur == NULL || ISSET(FTS_STOP))
+		return (NULL);
+
+	/* Set current node pointer. */
+	p = sp->fts_cur;
+
+	/* Save and zero out user instructions. */
+	instr = p->fts_instr;
+	p->fts_instr = FTS_NOINSTR;
+
+	/* Any type of file may be re-visited; re-stat and re-turn. */
+	if (instr == FTS_AGAIN) {
+		p->fts_info = fts_stat(sp, p, 0);
+		return (p);
+	}
+
+	/*
+	 * Following a symlink -- SLNONE test allows application to see
+	 * SLNONE and recover.  If indirecting through a symlink, have
+	 * keep a pointer to current location.  If unable to get that
+	 * pointer, follow fails.
+	 */
+	if (instr == FTS_FOLLOW &&
+	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) {
+		p->fts_info = fts_stat(sp, p, 1);
+		if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) {
+#ifdef HAVE_FCHDIR
+			if ((p->fts_symfd = open(".", O_RDONLY | KMK_OPEN_NO_INHERIT, 0)) == -1) {
+				p->fts_errno = errno;
+				p->fts_info = FTS_ERR;
+			} else if (fcntl(p->fts_symfd, F_SETFD, FD_CLOEXEC) == -1) {
+				p->fts_errno = errno;
+				p->fts_info = FTS_ERR;
+				close(p->fts_symfd);
+			} else
+				p->fts_flags |= FTS_SYMFOLLOW;
+#endif
+		}
+		return (p);
+	}
+
+	/* Directory in pre-order. */
+	if (p->fts_info == FTS_D) {
+		/* If skipped or crossed mount point, do post-order visit. */
+		if (instr == FTS_SKIP ||
+		    (ISSET(FTS_XDEV) && p->fts_dev != sp->fts_dev)) {
+#ifdef HAVE_FCHDIR
+			if (p->fts_flags & FTS_SYMFOLLOW)
+				(void)close(p->fts_symfd);
+#endif
+			if (sp->fts_child) {
+				fts_lfree(sp->fts_child);
+				sp->fts_child = NULL;
+			}
+			p->fts_info = FTS_DP;
+			return (p);
+		}
+
+		/* Rebuild if only read the names and now traversing. */
+		if (sp->fts_child && ISSET(FTS_NAMEONLY)) {
+			CLR(FTS_NAMEONLY);
+			fts_lfree(sp->fts_child);
+			sp->fts_child = NULL;
+		}
+
+		/*
+		 * Cd to the subdirectory.
+		 *
+		 * If have already read and now fail to chdir, whack the list
+		 * to make the names come out right, and set the parent errno
+		 * so the application will eventually get an error condition.
+		 * Set the FTS_DONTCHDIR flag so that when we logically change
+		 * directories back to the parent we don't do a chdir.
+		 *
+		 * If haven't read do so.  If the read fails, fts_build sets
+		 * FTS_STOP or the fts_info field of the node.
+		 */
+		if (sp->fts_child) {
+			if (fts_safe_changedir(sp, p, -1, p->fts_accpath)) {
+				p->fts_errno = errno;
+				p->fts_flags |= FTS_DONTCHDIR;
+				for (p = sp->fts_child; p; p = p->fts_link)
+					p->fts_accpath =
+					    p->fts_parent->fts_accpath;
+			}
+		} else if ((sp->fts_child = fts_build(sp, BREAD)) == NULL) {
+			if (ISSET(FTS_STOP))
+				return (NULL);
+			return (p);
+		}
+		p = sp->fts_child;
+		sp->fts_child = NULL;
+		goto name;
+	}
+
+	/* Move to the next node on this level. */
+next:	tmp = p;
+	if ((p = p->fts_link) != NULL) {
+		free(tmp);
+
+		/*
+		 * If reached the top, return to the original directory, and
+		 * load the paths for the next root.
+		 */
+		if (p->fts_level == FTS_ROOTLEVEL) {
+#ifdef HAVE_FCHDIR
+			if (FCHDIR(sp, sp->fts_rfd)) {
+#else
+			if (CHDIR(sp, sp->fts_rdir)) {
+#endif
+				SET(FTS_STOP);
+				return (NULL);
+			}
+			fts_load(sp, p);
+			return (sp->fts_cur = p);
+		}
+
+		/*
+		 * User may have called fts_set on the node.  If skipped,
+		 * ignore.  If followed, get a file descriptor so we can
+		 * get back if necessary.
+		 */
+		if (p->fts_instr == FTS_SKIP)
+			goto next;
+		if (p->fts_instr == FTS_FOLLOW) {
+			p->fts_info = fts_stat(sp, p, 1);
+			if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) {
+#ifdef HAVE_FCHDIR
+				if ((p->fts_symfd =
+				    open(".", O_RDONLY | KMK_OPEN_NO_INHERIT, 0)) == -1) {
+					p->fts_errno = errno;
+					p->fts_info = FTS_ERR;
+				} else if (fcntl(p->fts_symfd, F_SETFD, FD_CLOEXEC) == -1) {
+					p->fts_errno = errno;
+					p->fts_info = FTS_ERR;
+					close(p->fts_symfd);
+				} else
+					p->fts_flags |= FTS_SYMFOLLOW;
+#endif
+			}
+			p->fts_instr = FTS_NOINSTR;
+		}
+
+name:		t = sp->fts_path + NAPPEND(p->fts_parent);
+		*t++ = '/';
+		memmove(t, p->fts_name, (size_t)(p->fts_namelen + 1));
+		return (sp->fts_cur = p);
+	}
+
+	/* Move up to the parent node. */
+	p = tmp->fts_parent;
+	free(tmp);
+
+	if (p->fts_level == FTS_ROOTPARENTLEVEL) {
+		/*
+		 * Done; free everything up and set errno to 0 so the user
+		 * can distinguish between error and EOF.
+		 */
+		free(p);
+		errno = 0;
+		return (sp->fts_cur = NULL);
+	}
+
+	/* Nul terminate the pathname. */
+	sp->fts_path[p->fts_pathlen] = '\0';
+
+	/*
+	 * Return to the parent directory.  If at a root node or came through
+	 * a symlink, go back through the file descriptor.  Otherwise, cd up
+	 * one directory.
+	 */
+	if (p->fts_level == FTS_ROOTLEVEL) {
+#ifdef HAVE_FCHDIR
+		if (FCHDIR(sp, sp->fts_rfd)) {
+#else
+		if (CHDIR(sp, sp->fts_rdir)) {
+#endif
+			SET(FTS_STOP);
+			return (NULL);
+		}
+#ifdef HAVE_FCHDIR
+	} else if (p->fts_flags & FTS_SYMFOLLOW) {
+		if (FCHDIR(sp, p->fts_symfd)) {
+			saved_errno = errno;
+			(void)close(p->fts_symfd);
+			errno = saved_errno;
+			SET(FTS_STOP);
+			return (NULL);
+		}
+		(void)close(p->fts_symfd);
+#else
+        (void)saved_errno;
+#endif
+	} else if (!(p->fts_flags & FTS_DONTCHDIR) &&
+	    fts_safe_changedir(sp, p->fts_parent, -1, "..")) {
+		SET(FTS_STOP);
+		return (NULL);
+	}
+	p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP;
+	return (sp->fts_cur = p);
+}
+
+/*
+ * Fts_set takes the stream as an argument although it's not used in this
+ * implementation; it would be necessary if anyone wanted to add global
+ * semantics to fts using fts_set.  An error return is allowed for similar
+ * reasons.
+ */
+/* ARGSUSED */
+int
+fts_set(sp, p, instr)
+	FTS *sp;
+	FTSENT *p;
+	int instr;
+{
+
+	_DIAGASSERT(sp != NULL);
+	_DIAGASSERT(p != NULL);
+
+	if (instr && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
+	    instr != FTS_NOINSTR && instr != FTS_SKIP) {
+		errno = EINVAL;
+		return (1);
+	}
+	p->fts_instr = instr;
+	return (0);
+}
+
+FTSENT *
+fts_children(sp, instr)
+	FTS *sp;
+	int instr;
+{
+	FTSENT *p;
+#ifdef HAVE_FCHDIR
+	int fd;
+#else
+	char *pszRoot;
+	int rc;
+#endif
+
+	_DIAGASSERT(sp != NULL);
+
+	if (instr && instr != FTS_NAMEONLY) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	/* Set current node pointer. */
+	p = sp->fts_cur;
+
+	/*
+	 * Errno set to 0 so user can distinguish empty directory from
+	 * an error.
+	 */
+	errno = 0;
+
+	/* Fatal errors stop here. */
+	if (ISSET(FTS_STOP))
+		return (NULL);
+
+	/* Return logical hierarchy of user's arguments. */
+	if (p->fts_info == FTS_INIT)
+		return (p->fts_link);
+
+	/*
+	 * If not a directory being visited in pre-order, stop here.  Could
+	 * allow FTS_DNR, assuming the user has fixed the problem, but the
+	 * same effect is available with FTS_AGAIN.
+	 */
+	if (p->fts_info != FTS_D /* && p->fts_info != FTS_DNR */)
+		return (NULL);
+
+	/* Free up any previous child list. */
+	if (sp->fts_child)
+		fts_lfree(sp->fts_child);
+
+	if (instr == FTS_NAMEONLY) {
+		SET(FTS_NAMEONLY);
+		instr = BNAMES;
+	} else
+		instr = BCHILD;
+
+	/*
+	 * If using chdir on a relative path and called BEFORE fts_read does
+	 * its chdir to the root of a traversal, we can lose -- we need to
+	 * chdir into the subdirectory, and we don't know where the current
+	 * directory is, so we can't get back so that the upcoming chdir by
+	 * fts_read will work.
+	 */
+	if (p->fts_level != FTS_ROOTLEVEL || IS_SLASH(p->fts_accpath[0]) ||
+	    ISSET(FTS_NOCHDIR))
+		return (sp->fts_child = fts_build(sp, instr));
+
+#ifdef HAVE_FCHDIR
+	if ((fd = open(".", O_RDONLY | KMK_OPEN_NO_INHERIT, 0)) == -1)
+#else
+	if ((pszRoot = getcwd(NULL, 0)) == NULL)
+#endif
+		return (sp->fts_child = NULL);
+	sp->fts_child = fts_build(sp, instr);
+#ifdef HAVE_FCHDIR
+	if (fchdir(fd)) {
+		(void)close(fd);
+		return (NULL);
+	}
+	(void)close(fd);
+#else
+	rc = chdir(pszRoot);
+	free(pszRoot);
+	if (rc)
+		return (NULL);
+#endif
+
+	return (sp->fts_child);
+}
+
+/*
+ * This is the tricky part -- do not casually change *anything* in here.  The
+ * idea is to build the linked list of entries that are used by fts_children
+ * and fts_read.  There are lots of special cases.
+ *
+ * The real slowdown in walking the tree is the stat calls.  If FTS_NOSTAT is
+ * set and it's a physical walk (so that symbolic links can't be directories),
+ * we can do things quickly.  First, if it's a 4.4BSD file system, the type
+ * of the file is in the directory entry.  Otherwise, we assume that the number
+ * of subdirectories in a node is equal to the number of links to the parent.
+ * The former skips all stat calls.  The latter skips stat calls in any leaf
+ * directories and for any files after the subdirectories in the directory have
+ * been found, cutting the stat calls by about 2/3.
+ */
+static FTSENT *
+fts_build(sp, type)
+	FTS *sp;
+	int type;
+{
+	struct dirent *dp;
+	FTSENT *p, *head;
+	size_t nitems;
+	FTSENT *cur, *tail;
+	DIR *dirp;
+	int adjust, cderrno, descend, len, level, nlinks, saved_errno, nostat;
+	size_t maxlen;
+#ifdef FTS_WHITEOUT
+	int oflag;
+#endif
+	char *cp = NULL;	/* pacify gcc */
+
+	_DIAGASSERT(sp != NULL);
+
+	/* Set current node pointer. */
+	cur = sp->fts_cur;
+
+	/*
+	 * Open the directory for reading.  If this fails, we're done.
+	 * If being called from fts_read, set the fts_info field.
+	 */
+#if defined(FTS_WHITEOUT) && !defined(__OS2__)
+	if (ISSET(FTS_WHITEOUT))
+		oflag = DTF_NODUP|DTF_REWIND;
+	else
+		oflag = DTF_HIDEW|DTF_NODUP|DTF_REWIND;
+#elif defined(_MSC_VER)
+# define __opendir2(path, flag) birdDirOpenExtraInfo(path)
+#else
+#define __opendir2(path, flag) opendir(path)
+#endif
+	if ((dirp = __opendir2(cur->fts_accpath, oflag)) == NULL) {
+		if (type == BREAD) {
+			cur->fts_info = FTS_DNR;
+			cur->fts_errno = errno;
+		}
+		return (NULL);
+	}
+
+	/*
+	 * Nlinks is the number of possible entries of type directory in the
+	 * directory if we're cheating on stat calls, 0 if we're not doing
+	 * any stat calls at all, -1 if we're doing stats on everything.
+	 */
+	if (type == BNAMES) {
+		nlinks = 0;
+		nostat = 1;
+	} else if (ISSET(FTS_NOSTAT) && ISSET(FTS_PHYSICAL)) {
+		nlinks = cur->fts_nlink - (ISSET(FTS_SEEDOT) ? 0 : 2);
+		nostat = 1;
+	} else {
+		nlinks = -1;
+		nostat = 0;
+	}
+
+#ifdef notdef
+	(void)printf("nlinks == %d (cur: %d)\n", nlinks, cur->fts_nlink);
+	(void)printf("NOSTAT %d PHYSICAL %d SEEDOT %d\n",
+	    ISSET(FTS_NOSTAT), ISSET(FTS_PHYSICAL), ISSET(FTS_SEEDOT));
+#endif
+	/*
+	 * If we're going to need to stat anything or we want to descend
+	 * and stay in the directory, chdir.  If this fails we keep going,
+	 * but set a flag so we don't chdir after the post-order visit.
+	 * We won't be able to stat anything, but we can still return the
+	 * names themselves.  Note, that since fts_read won't be able to
+	 * chdir into the directory, it will have to return different path
+	 * names than before, i.e. "a/b" instead of "b".  Since the node
+	 * has already been visited in pre-order, have to wait until the
+	 * post-order visit to return the error.  There is a special case
+	 * here, if there was nothing to stat then it's not an error to
+	 * not be able to stat.  This is all fairly nasty.  If a program
+	 * needed sorted entries or stat information, they had better be
+	 * checking FTS_NS on the returned nodes.
+	 */
+	cderrno = 0;
+	if (nlinks || type == BREAD) {
+#ifdef HAVE_FCHDIR
+		if (fts_safe_changedir(sp, cur, dirfd(dirp), NULL)) {
+#else
+		if (fts_safe_changedir(sp, cur, dirfd(dirp), cur->fts_accpath)) {
+#endif
+			if (nlinks && type == BREAD)
+				cur->fts_errno = errno;
+			cur->fts_flags |= FTS_DONTCHDIR;
+			descend = 0;
+			cderrno = errno;
+		} else
+			descend = 1;
+	} else
+		descend = 0;
+
+	/*
+	 * Figure out the max file name length that can be stored in the
+	 * current path -- the inner loop allocates more path as necessary.
+	 * We really wouldn't have to do the maxlen calculations here, we
+	 * could do them in fts_read before returning the path, but it's a
+	 * lot easier here since the length is part of the dirent structure.
+	 *
+	 * If not changing directories set a pointer so that can just append
+	 * each new name into the path.
+	 */
+	len = NAPPEND(cur);
+	if (ISSET(FTS_NOCHDIR)) {
+		cp = sp->fts_path + len;
+		*cp++ = '/';
+	}
+	len++;
+	maxlen = sp->fts_pathlen - len;
+
+	level = cur->fts_level + 1;
+
+	/* Read the directory, attaching each entry to the `link' pointer. */
+	adjust = 0;
+	for (head = tail = NULL, nitems = 0; (dp = readdir(dirp)) != NULL;) {
+		size_t dlen;
+
+		if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name))
+			continue;
+
+#if HAVE_STRUCT_DIRENT_D_NAMLEN
+		dlen = dp->d_namlen;
+#else
+		dlen = strlen(dp->d_name);
+#endif
+		if ((p = fts_alloc(sp, dp->d_name, dlen)) == NULL)
+			goto mem1;
+		if (dlen >= maxlen) {	/* include space for NUL */
+			if (fts_palloc(sp, len + dlen + 1)) {
+				/*
+				 * No more memory for path or structures.  Save
+				 * errno, free up the current structure and the
+				 * structures already allocated.
+				 */
+mem1:				saved_errno = errno;
+				if (p)
+					free(p);
+				fts_lfree(head);
+				(void)closedir(dirp);
+				errno = saved_errno;
+				cur->fts_info = FTS_ERR;
+				SET(FTS_STOP);
+				return (NULL);
+			}
+			adjust = 1;
+			if (ISSET(FTS_NOCHDIR))
+				cp = sp->fts_path + len;
+			maxlen = sp->fts_pathlen - len;
+		}
+
+		p->fts_pathlen = len + dlen;
+		p->fts_parent = sp->fts_cur;
+		p->fts_level = level;
+
+#ifdef FTS_WHITEOUT
+		if (dp->d_type == DT_WHT)
+			p->fts_flags |= FTS_ISW;
+#endif
+
+		if (cderrno) {
+			if (nlinks) {
+				p->fts_info = FTS_NS;
+				p->fts_errno = cderrno;
+			} else
+				p->fts_info = FTS_NSOK;
+			p->fts_accpath = cur->fts_accpath;
+		} else if (nlinks == 0
+#ifdef DT_DIR
+		    || (nostat &&
+		    dp->d_type != DT_DIR && dp->d_type != DT_UNKNOWN)
+#endif
+		    ) {
+			p->fts_accpath =
+			    ISSET(FTS_NOCHDIR) ? p->fts_path : p->fts_name;
+			p->fts_info = FTS_NSOK;
+		} else {
+			/* Build a file name for fts_stat to stat. */
+			if (ISSET(FTS_NOCHDIR)) {
+				p->fts_accpath = p->fts_path;
+				memmove(cp, p->fts_name,
+				        (size_t)(p->fts_namelen + 1));
+			} else
+				p->fts_accpath = p->fts_name;
+
+			/* Stat it. */
+#ifdef _MSC_VER
+			p->fts_info = fts_stat_dirent(sp, p, 0, dp);
+#else
+			p->fts_info = fts_stat(sp, p, 0);
+#endif
+
+			/* Decrement link count if applicable. */
+			if (nlinks > 0 && (p->fts_info == FTS_D ||
+			    p->fts_info == FTS_DC || p->fts_info == FTS_DOT))
+				--nlinks;
+		}
+
+		/* We walk in directory order so "ls -f" doesn't get upset. */
+		p->fts_link = NULL;
+		if (head == NULL)
+			head = tail = p;
+		else {
+			tail->fts_link = p;
+			tail = p;
+		}
+		++nitems;
+	}
+	(void)closedir(dirp);
+
+	/*
+	 * If had to realloc the path, adjust the addresses for the rest
+	 * of the tree.
+	 */
+	if (adjust)
+		fts_padjust(sp, head);
+
+	/*
+	 * If not changing directories, reset the path back to original
+	 * state.
+	 */
+	if (ISSET(FTS_NOCHDIR)) {
+		if (cp - 1 > sp->fts_path)
+			--cp;
+		*cp = '\0';
+	}
+
+	/*
+	 * If descended after called from fts_children or after called from
+	 * fts_read and nothing found, get back.  At the root level we use
+	 * the saved fd; if one of fts_open()'s arguments is a relative path
+	 * to an empty directory, we wind up here with no other way back.  If
+	 * can't get back, we're done.
+	 */
+	if (descend && (type == BCHILD || !nitems) &&
+	    (cur->fts_level == FTS_ROOTLEVEL ?
+#ifdef HAVE_FCHDIR
+	    FCHDIR(sp, sp->fts_rfd) :
+#else
+	    CHDIR(sp, sp->fts_rdir) :
+#endif
+	    fts_safe_changedir(sp, cur->fts_parent, -1, ".."))) {
+		cur->fts_info = FTS_ERR;
+		SET(FTS_STOP);
+		return (NULL);
+	}
+
+	/* If didn't find anything, return NULL. */
+	if (!nitems) {
+		if (type == BREAD)
+			cur->fts_info = FTS_DP;
+		return (NULL);
+	}
+
+	/* Sort the entries. */
+	if (sp->fts_compar && nitems > 1)
+		head = fts_sort(sp, head, nitems);
+	return (head);
+}
+
+#ifdef _MSC_VER
+/** Special version of fts_stat that takes the information from the directory
+ *  entry returned by readdir().
+ *
+ *  Directory listing returns all the stat information on systems likes
+ *  Windows and OS/2. */
+static u_short
+fts_stat_dirent(FTS *sp, FTSENT *p, int follow, struct dirent *pDirEnt)
+{
+	FTSENT *t;
+	dev_t dev;
+	ino_t ino;
+	struct STAT *sbp, sb;
+	int saved_errno;
+
+	_DIAGASSERT(sp != NULL);
+	_DIAGASSERT(p != NULL);
+
+	/* If user needs stat info, stat buffer already allocated. */
+	sbp = ISSET(FTS_NOSTAT) ? &sb : p->fts_statp;
+
+	/*
+	 * Copy over the stat info from the direntry.
+	 */
+	*sbp = pDirEnt->d_stat;
+
+	/*
+	 * If doing a logical walk, or application requested FTS_FOLLOW, do
+	 * a stat(2) on symlinks.  If that fails, assume non-existent
+	 * symlink and set the errno from the stat call.
+	 */
+	if (S_ISLNK(sbp->st_mode) && (ISSET(FTS_LOGICAL) || follow)) {
+		if (stat(p->fts_accpath, sbp)) {
+			saved_errno = errno;
+			errno = 0;
+			return (FTS_SLNONE);
+		}
+	}
+
+	if (S_ISDIR(sbp->st_mode)) {
+		/*
+		 * Set the device/inode.  Used to find cycles and check for
+		 * crossing mount points.  Also remember the link count, used
+		 * in fts_build to limit the number of stat calls.  It is
+		 * understood that these fields are only referenced if fts_info
+		 * is set to FTS_D.
+		 */
+		dev = p->fts_dev = sbp->st_dev;
+		ino = p->fts_ino = sbp->st_ino;
+		p->fts_nlink = sbp->st_nlink;
+
+		if (ISDOT(p->fts_name))
+			return (FTS_DOT);
+
+		/*
+		 * Cycle detection is done by brute force when the directory
+		 * is first encountered.  If the tree gets deep enough or the
+		 * number of symbolic links to directories is high enough,
+		 * something faster might be worthwhile.
+		 */
+
+#ifdef _MSC_VER
+		if (ino && dev) /** @todo ino emulation on windows... */
+#endif
+		    for (t = p->fts_parent;
+			t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
+			    if (ino == t->fts_ino && dev == t->fts_dev) {
+				    p->fts_cycle = t;
+				    return (FTS_DC);
+			    }
+		return (FTS_D);
+	}
+	if (S_ISLNK(sbp->st_mode))
+		return (FTS_SL);
+	if (S_ISREG(sbp->st_mode))
+		return (FTS_F);
+	return (FTS_DEFAULT);
+}
+
+#endif /* fts_stat_dirent */
+
+static u_short
+fts_stat(sp, p, follow)
+	FTS *sp;
+	FTSENT *p;
+	int follow;
+{
+	FTSENT *t;
+	dev_t dev;
+	ino_t ino;
+	struct STAT *sbp, sb;
+	int saved_errno;
+
+	_DIAGASSERT(sp != NULL);
+	_DIAGASSERT(p != NULL);
+
+	/* If user needs stat info, stat buffer already allocated. */
+	sbp = ISSET(FTS_NOSTAT) ? &sb : p->fts_statp;
+
+#ifdef FTS_WHITEOUT
+	/* check for whiteout */
+	if (p->fts_flags & FTS_ISW) {
+		if (sbp != &sb) {
+			memset(sbp, '\0', sizeof (*sbp));
+			sbp->st_mode = S_IFWHT;
+		}
+		return (FTS_W);
+	}
+#endif
+
+	/*
+	 * If doing a logical walk, or application requested FTS_FOLLOW, do
+	 * a stat(2).  If that fails, check for a non-existent symlink.  If
+	 * fail, set the errno from the stat call.
+	 */
+	if (ISSET(FTS_LOGICAL) || follow) {
+		if (stat(p->fts_accpath, sbp)) {
+			saved_errno = errno;
+			if (!lstat(p->fts_accpath, sbp)) {
+				errno = 0;
+				return (FTS_SLNONE);
+			}
+			p->fts_errno = saved_errno;
+			goto err;
+		}
+	} else if (lstat(p->fts_accpath, sbp)) {
+		p->fts_errno = errno;
+err:		memset(sbp, 0, sizeof(struct STAT));
+		return (FTS_NS);
+	}
+
+	if (S_ISDIR(sbp->st_mode)) {
+		/*
+		 * Set the device/inode.  Used to find cycles and check for
+		 * crossing mount points.  Also remember the link count, used
+		 * in fts_build to limit the number of stat calls.  It is
+		 * understood that these fields are only referenced if fts_info
+		 * is set to FTS_D.
+		 */
+		dev = p->fts_dev = sbp->st_dev;
+		ino = p->fts_ino = sbp->st_ino;
+		p->fts_nlink = sbp->st_nlink;
+
+		if (ISDOT(p->fts_name))
+			return (FTS_DOT);
+
+		/*
+		 * Cycle detection is done by brute force when the directory
+		 * is first encountered.  If the tree gets deep enough or the
+		 * number of symbolic links to directories is high enough,
+		 * something faster might be worthwhile.
+		 */
+
+#ifdef _MSC_VER
+		if (ino && dev) /** @todo ino emulation on windows... */
+#endif
+		for (t = p->fts_parent;
+		    t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
+			if (ino == t->fts_ino && dev == t->fts_dev) {
+				p->fts_cycle = t;
+				return (FTS_DC);
+			}
+		return (FTS_D);
+	}
+	if (S_ISLNK(sbp->st_mode))
+		return (FTS_SL);
+	if (S_ISREG(sbp->st_mode))
+		return (FTS_F);
+	return (FTS_DEFAULT);
+}
+
+static FTSENT *
+fts_sort(sp, head, nitems)
+	FTS *sp;
+	FTSENT *head;
+	size_t nitems;
+{
+	FTSENT **ap, *p;
+
+	_DIAGASSERT(sp != NULL);
+	_DIAGASSERT(head != NULL);
+
+	/*
+	 * Construct an array of pointers to the structures and call qsort(3).
+	 * Reassemble the array in the order returned by qsort.  If unable to
+	 * sort for memory reasons, return the directory entries in their
+	 * current order.  Allocate enough space for the current needs plus
+	 * 40 so don't realloc one entry at a time.
+	 */
+	if (nitems > sp->fts_nitems) {
+		FTSENT **new;
+
+		new = realloc(sp->fts_array, sizeof(FTSENT *) * (nitems + 40));
+		if (new == 0)
+			return (head);
+		sp->fts_array = new;
+		sp->fts_nitems = nitems + 40;
+	}
+	for (ap = sp->fts_array, p = head; p; p = p->fts_link)
+		*ap++ = p;
+	qsort((void *)sp->fts_array, nitems, sizeof(FTSENT *),
+		(int (*)(const void *, const void *))sp->fts_compar);
+	for (head = *(ap = sp->fts_array); --nitems; ++ap)
+		ap[0]->fts_link = ap[1];
+	ap[0]->fts_link = NULL;
+	return (head);
+}
+
+static FTSENT *
+fts_alloc(sp, name, namelen)
+	FTS *sp;
+	const char *name;
+	size_t namelen;
+{
+	FTSENT *p;
+	size_t len;
+
+	_DIAGASSERT(sp != NULL);
+	_DIAGASSERT(name != NULL);
+
+#if defined(ALIGNBYTES) && defined(ALIGN)
+	/*
+	 * The file name is a variable length array and no stat structure is
+	 * necessary if the user has set the nostat bit.  Allocate the FTSENT
+	 * structure, the file name and the stat structure in one chunk, but
+	 * be careful that the stat structure is reasonably aligned.  Since the
+	 * fts_name field is declared to be of size 1, the fts_name pointer is
+	 * namelen + 2 before the first possible address of the stat structure.
+	 */
+	len = sizeof(FTSENT) + namelen;
+	if (!ISSET(FTS_NOSTAT))
+		len += sizeof(struct STAT) + ALIGNBYTES;
+	if ((p = malloc(len)) == NULL)
+		return (NULL);
+
+	if (!ISSET(FTS_NOSTAT))
+		p->fts_statp =
+		    (struct STAT *)ALIGN((u_long)(p->fts_name + namelen + 2));
+#else
+	(void)len;
+	if ((p = malloc(sizeof(FTSENT) + namelen)) == NULL)
+		return (NULL);
+
+	if (!ISSET(FTS_NOSTAT))
+		if ((p->fts_statp = malloc(sizeof(struct STAT))) == NULL) {
+			free(p);
+			return (NULL);
+		}
+#endif
+
+	/* Copy the name plus the trailing NULL. */
+	memmove(p->fts_name, name, namelen + 1);
+
+	p->fts_namelen = namelen;
+	p->fts_path = sp->fts_path;
+	p->fts_errno = 0;
+	p->fts_flags = 0;
+	p->fts_instr = FTS_NOINSTR;
+	p->fts_number = 0;
+	p->fts_pointer = NULL;
+	return (p);
+}
+
+static void
+fts_lfree(head)
+	FTSENT *head;
+{
+	FTSENT *p;
+
+	/* XXX: head may be NULL ? */
+
+	/* Free a linked list of structures. */
+	while ((p = head) != NULL) {
+		head = head->fts_link;
+
+#if !defined(ALIGNBYTES) || !defined(ALIGN)
+		if (p->fts_statp)
+			free(p->fts_statp);
+#endif
+		free(p);
+	}
+}
+
+static size_t
+fts_pow2(x)
+	size_t x;
+{
+
+	x--;
+	x |= x>>1;
+	x |= x>>2;
+	x |= x>>4;
+	x |= x>>8;
+	x |= x>>16;
+#if LONG_BIT > 32
+	x |= x>>32;
+#endif
+#if LONG_BIT > 64
+	x |= x>>64;
+#endif
+	x++;
+	return (x);
+}
+
+/*
+ * Allow essentially unlimited paths; find, rm, ls should all work on any tree.
+ * Most systems will allow creation of paths much longer than MAXPATHLEN, even
+ * though the kernel won't resolve them.  Round up the new size to a power of 2,
+ * so we don't realloc the path 2 bytes at a time.
+ */
+static int
+fts_palloc(sp, size)
+	FTS *sp;
+	size_t size;
+{
+	char *new;
+
+	_DIAGASSERT(sp != NULL);
+
+#if 1
+	/* Protect against fts_pathlen overflow. */
+	if (size > USHRT_MAX + 1) {
+		errno = ENOMEM;
+		return (1);
+	}
+#endif
+	size = fts_pow2(size);
+	new = realloc(sp->fts_path, size);
+	if (new == 0)
+		return (1);
+	sp->fts_path = new;
+	sp->fts_pathlen = size;
+	return (0);
+}
+
+/*
+ * When the path is realloc'd, have to fix all of the pointers in structures
+ * already returned.
+ */
+static void
+fts_padjust(sp, head)
+	FTS *sp;
+	FTSENT *head;
+{
+	FTSENT *p;
+	char *addr;
+
+	_DIAGASSERT(sp != NULL);
+
+#define	ADJUST(p) do {							\
+	if ((p)->fts_accpath != (p)->fts_name)				\
+		(p)->fts_accpath =					\
+		    addr + ((p)->fts_accpath - (p)->fts_path);		\
+	(p)->fts_path = addr;						\
+} while (/*CONSTCOND*/0)
+
+	addr = sp->fts_path;
+
+	/* Adjust the current set of children. */
+	for (p = sp->fts_child; p; p = p->fts_link)
+		ADJUST(p);
+
+	/* Adjust the rest of the tree, including the current level. */
+	for (p = head; p->fts_level >= FTS_ROOTLEVEL;) {
+		ADJUST(p);
+		p = p->fts_link ? p->fts_link : p->fts_parent;
+	}
+}
+
+static size_t
+fts_maxarglen(argv)
+	char * const *argv;
+{
+	size_t len, max;
+
+	_DIAGASSERT(argv != NULL);
+
+	for (max = 0; *argv; ++argv)
+		if ((len = strlen(*argv)) > max)
+			max = len;
+	return (max + 1);
+}
+
+/*
+ * Change to dir specified by fd or p->fts_accpath without getting
+ * tricked by someone changing the world out from underneath us.
+ * Assumes p->fts_dev and p->fts_ino are filled in.
+ */
+static int
+fts_safe_changedir(sp, p, fd, path)
+	const FTS *sp;
+	const FTSENT *p;
+	int fd;
+	const char *path;
+{
+	int oldfd = fd, ret = -1;
+	struct STAT sb;
+
+	if (ISSET(FTS_NOCHDIR))
+		return 0;
+
+#ifdef HAVE_FCHDIR
+	if (oldfd < 0) {
+		if (!path) /* shuts up gcc nonull checks*/
+			return -1;
+		fd = open(path, O_RDONLY | KMK_OPEN_NO_INHERIT);
+		if (fd == -1)
+			return -1;
+	}
+
+	if (fstat(fd, &sb) == -1)
+		goto bail;
+#else
+	if (stat(path, &sb))
+		goto bail;
+#endif
+
+	if (sb.st_ino != p->fts_ino || sb.st_dev != p->fts_dev) {
+		errno = ENOENT;
+		goto bail;
+	}
+
+#ifdef HAVE_FCHDIR
+	ret = fchdir(fd);
+#else
+	ret = chdir(path);
+#endif
+
+bail:
+#ifdef HAVE_FCHDIR
+	if (oldfd < 0) {
+		int save_errno = errno;
+		(void)close(fd);
+		errno = save_errno;
+	}
+#endif
+	return ret;
+}
diff --git a/src/kmk/kmkbuiltin/ftsfake.h b/src/kmk/kmkbuiltin/ftsfake.h
new file mode 100644
index 0000000..2518d30
--- /dev/null
+++ b/src/kmk/kmkbuiltin/ftsfake.h
@@ -0,0 +1,159 @@
+/*	$NetBSD: fts.h,v 1.12 2005/02/03 04:39:32 perry Exp $	*/
+
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)fts.h	8.3 (Berkeley) 8/14/94
+ */
+
+#ifndef	_FTS_H_
+#define	_FTS_H_
+
+#ifdef _MSC_VER
+# include "kmkbuiltin/mscfakes.h"
+#endif
+
+typedef struct {
+	struct _ftsent *fts_cur;	/* current node */
+	struct _ftsent *fts_child;	/* linked list of children */
+	struct _ftsent **fts_array;	/* sort array */
+	dev_t fts_dev;			/* starting device # */
+	char *fts_path;			/* path for this descent */
+#if defined(_MSC_VER) || defined(__OS2__)
+	char *fts_rdir;		        /* path of root */
+#else
+	int fts_rfd;			/* fd for root */
+#endif
+	u_int fts_pathlen;		/* sizeof(path) */
+	u_int fts_nitems;		/* elements in the sort array */
+	int (*fts_compar)		/* compare function */
+		(const struct _ftsent **, const struct _ftsent **);
+
+#define	FTS_COMFOLLOW	0x001		/* follow command line symlinks */
+#define	FTS_LOGICAL	0x002		/* logical walk */
+#define	FTS_NOCHDIR	0x004		/* don't change directories */
+#define	FTS_NOSTAT	0x008		/* don't get stat info */
+#define	FTS_PHYSICAL	0x010		/* physical walk */
+#define	FTS_SEEDOT	0x020		/* return dot and dot-dot */
+#define	FTS_XDEV	0x040		/* don't cross devices */
+#ifndef _MSC_VER
+#define	FTS_WHITEOUT	0x080		/* return whiteout information */
+#endif
+#define	FTS_OPTIONMASK	0x0ff		/* valid user option mask */
+
+#define	FTS_NAMEONLY	0x100		/* (private) child names only */
+#define	FTS_STOP	0x200		/* (private) unrecoverable error */
+	int fts_options;		/* fts_open options, global flags */
+} FTS;
+
+typedef struct _ftsent {
+	struct _ftsent *fts_cycle;	/* cycle node */
+	struct _ftsent *fts_parent;	/* parent directory */
+	struct _ftsent *fts_link;	/* next file in directory */
+	long fts_number;	        /* local numeric value */
+	void *fts_pointer;	        /* local address value */
+	char *fts_accpath;		/* access path */
+	char *fts_path;			/* root path */
+	int fts_errno;			/* errno for this node */
+#ifndef _MSC_VER
+	int fts_symfd;			/* fd for symlink */
+#endif
+	u_short fts_pathlen;		/* strlen(fts_path) */
+	u_short fts_namelen;		/* strlen(fts_name) */
+
+	ino_t fts_ino;			/* inode */
+	dev_t fts_dev;			/* device */
+#ifdef __LIBC12_SOURCE__
+	u_int16_t fts_nlink;		/* link count */
+#else
+#ifndef _MSC_VER
+	nlink_t fts_nlink;		/* link count */
+#else
+	int fts_nlink;		/* link count */
+#endif
+#endif
+
+#define	FTS_ROOTPARENTLEVEL	-1
+#define	FTS_ROOTLEVEL		 0
+	short fts_level;		/* depth (-1 to N) */
+
+#define	FTS_D		 1		/* preorder directory */
+#define	FTS_DC		 2		/* directory that causes cycles */
+#define	FTS_DEFAULT	 3		/* none of the above */
+#define	FTS_DNR		 4		/* unreadable directory */
+#define	FTS_DOT		 5		/* dot or dot-dot */
+#define	FTS_DP		 6		/* postorder directory */
+#define	FTS_ERR		 7		/* error; errno is set */
+#define	FTS_F		 8		/* regular file */
+#define	FTS_INIT	 9		/* initialized only */
+#define	FTS_NS		10		/* stat(2) failed */
+#define	FTS_NSOK	11		/* no stat(2) requested */
+#define	FTS_SL		12		/* symbolic link */
+#define	FTS_SLNONE	13		/* symbolic link without target */
+#ifndef _MSC_VER
+#define	FTS_W		14		/* whiteout object */
+#endif
+	u_short fts_info;		/* user flags for FTSENT structure */
+
+#define	FTS_DONTCHDIR	 0x01		/* don't chdir .. to the parent */
+#define	FTS_SYMFOLLOW	 0x02		/* followed a symlink to get here */
+#ifndef _MSC_VER
+#define	FTS_ISW		 0x04		/* this is a whiteout object */
+#endif
+	u_short fts_flags;		/* private flags for FTSENT structure */
+
+#define	FTS_AGAIN	 1		/* read node again */
+#define	FTS_FOLLOW	 2		/* follow symbolic link */
+#define	FTS_NOINSTR	 3		/* no instructions */
+#define	FTS_SKIP	 4		/* discard node */
+	u_short fts_instr;		/* fts_set() instructions */
+
+#ifdef __LIBC12_SOURCE__
+	struct stat12 *fts_statp;	/* stat(2) information */
+#else
+	struct stat *fts_statp;		/* stat(2) information */
+#endif
+	char fts_name[1];		/* file name */
+} FTSENT;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+FTSENT	*fts_children(FTS *, int);
+int	 fts_close(FTS *);
+FTS	*fts_open(char * const *, int,
+	    int (*)(const FTSENT **, const FTSENT **));
+FTSENT	*fts_read(FTS *);
+int	 fts_set(FTS *, FTSENT *, int);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !_FTS_H_ */
diff --git a/src/kmk/kmkbuiltin/getopt1_r.c b/src/kmk/kmkbuiltin/getopt1_r.c
new file mode 100644
index 0000000..29e4d21
--- /dev/null
+++ b/src/kmk/kmkbuiltin/getopt1_r.c
@@ -0,0 +1,186 @@
+/*  Reentrant version of getopt_long and getopt_long_only.
+
+Based on ../getopt*.*:
+
+   getopt_long and getopt_long_only entry points for GNU getopt.
+Copyright (C) 1987-1994, 1996-2016 Free Software Foundation, Inc.
+
+NOTE: The canonical source of this file is maintained with the GNU C Library.
+Bugs can be reported to bug-glibc@gnu.org.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Modifications:
+  Copyright (c) 2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+*/
+
+#define FAKES_NO_GETOPT_H /* bird */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "getopt_r.h"
+
+#if !defined __STDC__ || !__STDC__
+/* This is a separate conditional since some stdc systems
+   reject `defined (const)'.  */
+#ifndef const
+#define const
+#endif
+#endif
+
+#include <stdio.h>
+
+#if 0
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#define GETOPT_INTERFACE_VERSION 2
+#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
+#include <gnu-versions.h>
+#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
+#define ELIDE_CODE
+#endif
+#endif
+#endif
+
+#if 1 //ndef ELIDE_CODE
+
+
+/* This needs to come after some library #include
+   to get __GNU_LIBRARY__ defined.  */
+#ifdef __GNU_LIBRARY__
+#include <stdlib.h>
+#endif
+
+#ifndef	NULL
+#define NULL 0
+#endif
+
+int
+getopt_long_r (struct getopt_state_r *gos, int *opt_index)
+{
+  return _getopt_internal_r (gos, gos->long_options, opt_index, 0);
+}
+
+/* Like getopt_long, but '-' as well as '--' can indicate a long option.
+   If an option that starts with '-' (not '--') doesn't match a long option,
+   but does match a short option, it is parsed as a short option
+   instead.  */
+
+int
+getopt_long_only_r (struct getopt_state_r *gos, int *opt_index)
+{
+  return _getopt_internal_r (gos, gos->long_options, opt_index, 0);
+}
+
+
+#endif /* #if 1 */ /* Not ELIDE_CODE.  */
+
+#ifdef TEST
+
+#include <stdio.h>
+
+int
+main (int argc, char **argv)
+{
+  int c;
+  int digit_optind = 0;
+
+  while (1)
+    {
+      int this_option_optind = optind ? optind : 1;
+      int option_index = 0;
+      struct getopt_state_r gos;
+      static struct option long_options[] =
+      {
+	{"add", 1, 0, 0},
+	{"append", 0, 0, 0},
+	{"delete", 1, 0, 0},
+	{"verbose", 0, 0, 0},
+	{"create", 0, 0, 0},
+	{"file", 1, 0, 0},
+	{0, 0, 0, 0}
+      };
+
+      getopt_initialize_r (&gos, argc, argv, "abc:d:0123456789", long_options, NULL, NULL);
+      c = getopt_long_r (&geo, &option_index);
+      if (c == -1)
+	break;
+
+      switch (c)
+	{
+	case 0:
+	  printf ("option %s", long_options[option_index].name);
+	  if (geo.optarg)
+	    printf (" with arg %s", geo.optarg);
+	  printf ("\n");
+	  break;
+
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+	  if (digit_optind != 0 && digit_optind != this_option_optind)
+	    printf ("digits occur in two different argv-elements.\n");
+	  digit_optind = this_option_optind;
+	  printf ("option %c\n", c);
+	  break;
+
+	case 'a':
+	  printf ("option a\n");
+	  break;
+
+	case 'b':
+	  printf ("option b\n");
+	  break;
+
+	case 'c':
+	  printf ("option c with value '%s'\n", geo.optarg);
+	  break;
+
+	case 'd':
+	  printf ("option d with value '%s'\n", geo.optarg);
+	  break;
+
+	case '?':
+	  break;
+
+	default:
+	  printf ("?? getopt returned character code 0%o ??\n", c);
+	}
+    }
+
+  if (geo.optind < argc)
+    {
+      printf ("non-option ARGV-elements: ");
+      while (optind < argc)
+	printf ("%s ", argv[geo.optind++]);
+      printf ("\n");
+    }
+
+  exit (0);
+}
+
+#endif /* TEST */
diff --git a/src/kmk/kmkbuiltin/getopt_r.c b/src/kmk/kmkbuiltin/getopt_r.c
new file mode 100644
index 0000000..c531ba5
--- /dev/null
+++ b/src/kmk/kmkbuiltin/getopt_r.c
@@ -0,0 +1,1090 @@
+/* Reentrant version of getopt.
+
+Based on ../getopt*.*:
+
+   Getopt for GNU.
+NOTE: getopt is now part of the C library, so if you don't know what
+"Keep this file name-space clean" means, talk to drepper@gnu.org
+before changing it!
+
+Copyright (C) 1987-2016 Free Software Foundation, Inc.
+
+NOTE: The canonical source of this file is maintained with the GNU C Library.
+Bugs can be reported to bug-glibc@gnu.org.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Modifications:
+  Copyright (c) 2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+*/
+
+/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
+   Ditto for AIX 3.2 and <stdlib.h>.  */
+#ifndef _NO_PROTO
+# define _NO_PROTO
+#endif
+
+#define FAKES_NO_GETOPT_H /* bird */
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if !defined __STDC__ || !__STDC__
+/* This is a separate conditional since some stdc systems
+   reject `defined (const)'.  */
+# ifndef const
+#  define const
+# endif
+#endif
+
+#include <stdio.h>
+
+#if 0
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#define GETOPT_INTERFACE_VERSION 2
+#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
+# include <gnu-versions.h>
+# if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
+#  define ELIDE_CODE
+# endif
+#endif
+#endif
+
+#if 1 //ndef ELIDE_CODE
+
+
+/* This needs to come after some library #include
+   to get __GNU_LIBRARY__ defined.  */
+#ifdef	__GNU_LIBRARY__
+/* Don't include stdlib.h for non-GNU C libraries because some of them
+   contain conflicting prototypes for getopt.  */
+# include <stdlib.h>
+# include <unistd.h>
+#endif	/* GNU C library.  */
+#include <stdlib.h> /* bird: we don't define getopt, so we're good. */
+
+#ifdef VMS
+# include <unixlib.h>
+# if HAVE_STRING_H - 0
+#  include <string.h>
+# endif
+#endif
+
+/* This is for other GNU distributions with internationalized messages.
+   When compiling libc, the _ macro is predefined.  */
+#include "gettext.h"
+#define _(msgid)    gettext (msgid)
+
+
+/* This version of `getopt' appears to the caller like standard Unix 'getopt'
+   but it behaves differently for the user, since it allows the user
+   to intersperse the options with the other arguments.
+
+   As `getopt' works, it permutes the elements of ARGV so that,
+   when it is done, all the options precede everything else.  Thus
+   all application programs are extended to handle flexible argument order.
+
+   Setting the environment variable POSIXLY_CORRECT disables permutation.
+   Then the behavior is completely standard.
+
+   GNU application programs can use a third alternative mode in which
+   they can distinguish the relative order of options and other arguments.  */
+
+#include "getopt_r.h"
+#include "err.h"
+#include <assert.h>
+
+#if 0 /* Moved to state_getopt_r in getopt_r.h. */
+/* For communication from `getopt' to the caller.
+   When `getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+char *optarg = NULL;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to `getopt'.
+
+   On entry to `getopt', zero means this is the first call; initialize.
+
+   When `getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+/* 1003.2 says this must be 1 before any call.  */
+int optind = 1;
+
+/* Formerly, initialization of getopt depended on optind==0, which
+   causes problems with re-calling getopt as programs generally don't
+   know that. */
+
+int __getopt_initialized = 0;
+
+/* The next char to be scanned in the option-element
+   in which the last option character we returned was found.
+   This allows us to pick up the scan where we left off.
+
+   If this is zero, or a null string, it means resume the scan
+   by advancing to the next ARGV-element.  */
+
+static char *nextchar;
+
+/* Callers store zero here to inhibit the error message
+   for unrecognized options.  */
+
+int opterr = 1;
+
+/* Set to an option character which was unrecognized.
+   This must be initialized on some systems to avoid linking in the
+   system's own getopt implementation.  */
+
+int optopt = '?';
+#endif /* Moved to state_getopt_r in getopt_r.h. */
+
+/* Describe how to deal with options that follow non-option ARGV-elements.
+
+   If the caller did not specify anything,
+   the default is REQUIRE_ORDER if the environment variable
+   POSIXLY_CORRECT is defined, PERMUTE otherwise.
+
+   REQUIRE_ORDER means don't recognize them as options;
+   stop option processing when the first non-option is seen.
+   This is what Unix does.
+   This mode of operation is selected by either setting the environment
+   variable POSIXLY_CORRECT, or using `+' as the first character
+   of the list of option characters.
+
+   PERMUTE is the default.  We permute the contents of ARGV as we scan,
+   so that eventually all the non-options are at the end.  This allows options
+   to be given in any order, even with programs that were not written to
+   expect this.
+
+   RETURN_IN_ORDER is an option available to programs that were written
+   to expect options and other ARGV-elements in any order and that care about
+   the ordering of the two.  We describe each non-option ARGV-element
+   as if it were the argument of an option with character code 1.
+   Using `-' as the first character of the list of option characters
+   selects this mode of operation.
+
+   The special argument `--' forces an end of option-scanning regardless
+   of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
+   `--' can cause `getopt' to return -1 with `optind' != ARGC.  */
+
+/*static*/ enum
+{
+  REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
+} /*ordering*/;
+
+#if 0 /* Moved to state_getopt_r in getopt_r.h. */
+/* Value of POSIXLY_CORRECT environment variable.  */
+static char *posixly_correct;
+#endif
+
+
+#if 1 //def	__GNU_LIBRARY__
+/* We want to avoid inclusion of string.h with non-GNU libraries
+   because there are many ways it can cause trouble.
+   On some systems, it contains special magic macros that don't work
+   in GCC.  */
+# include <string.h>
+//# define my_index	strchr
+#else
+
+# if HAVE_STRING_H
+#  include <string.h>
+# else
+#  include <strings.h>
+# endif
+
+#if 0 //def
+/* Avoid depending on library functions or files
+   whose names are inconsistent.  */
+#ifndef getenv
+extern char *getenv ();
+#endif
+#endif
+
+static char *
+my_index (const char *str, int chr)
+{
+  while (*str)
+    {
+      if (*str == chr)
+	return (char *) str;
+      str++;
+    }
+  return 0;
+}
+
+/* If using GCC, we can safely declare strlen this way.
+   If not using GCC, it is ok not to declare it.  */
+#ifdef __GNUC__
+/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
+   That was relevant to code that was here before.  */
+# if (!defined __STDC__ || !__STDC__) && !defined strlen
+/* gcc with -traditional declares the built-in strlen to return int,
+   and has done so at least since version 2.4.5. -- rms.  */
+extern int strlen (const char *);
+# endif /* not __STDC__ */
+#endif /* __GNUC__ */
+
+#endif /* not __GNU_LIBRARY__ */
+
+/* Handle permutation of arguments.  */
+
+#if 0 /* Moved to state_getopt_r in getopt_r.h. */
+/* Describe the part of ARGV that contains non-options that have
+   been skipped.  `first_nonopt' is the index in ARGV of the first of them;
+   `last_nonopt' is the index after the last of them.  */
+
+static int first_nonopt;
+static int last_nonopt;
+#endif
+
+#if 0 //def _LIBC
+/* Bash 2.0 gives us an environment variable containing flags
+   indicating ARGV elements that should not be considered arguments.  */
+
+/* Defined in getopt_init.c  */
+extern char *__getopt_nonoption_flags;
+
+static int nonoption_flags_max_len;
+static int nonoption_flags_len;
+
+static int original_argc;
+static char *const *original_argv;
+
+/* Make sure the environment variable bash 2.0 puts in the environment
+   is valid for the getopt call we must make sure that the ARGV passed
+   to getopt is that one passed to the process.  */
+static void __attribute__ ((unused))
+store_args_and_env (int argc, char *const *argv)
+{
+  /* XXX This is no good solution.  We should rather copy the args so
+     that we can compare them later.  But we must not use malloc(3).  */
+  original_argc = argc;
+  original_argv = argv;
+}
+# ifdef text_set_element
+text_set_element (__libc_subinit, store_args_and_env);
+# endif /* text_set_element */
+
+# define SWAP_FLAGS(ch1, ch2) \
+  if (nonoption_flags_len > 0)						      \
+    {									      \
+      char __tmp = __getopt_nonoption_flags[ch1];			      \
+      __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2];	      \
+      __getopt_nonoption_flags[ch2] = __tmp;				      \
+    }
+#else	/* !_LIBC */
+# define SWAP_FLAGS(ch1, ch2) do { } while (0)
+#endif	/* _LIBC */
+
+/* Exchange two adjacent subsequences of ARGV.
+   One subsequence is elements [first_nonopt,last_nonopt)
+   which contains all the non-options that have been skipped so far.
+   The other is elements [last_nonopt,optind), which contains all
+   the options processed since those non-options were skipped.
+
+   `first_nonopt' and `last_nonopt' are relocated so that they describe
+   the new indices of the non-options in ARGV after they are moved.  */
+
+static void
+exchange (struct getopt_state_r *gos, char **argv)
+{
+  int bottom = gos->first_nonopt;
+  int middle = gos->last_nonopt;
+  int top = gos->optind;
+  char *tem;
+
+  /* Exchange the shorter segment with the far end of the longer segment.
+     That puts the shorter segment into the right place.
+     It leaves the longer segment in the right place overall,
+     but it consists of two parts that need to be swapped next.  */
+
+#if 0 //def _LIBC
+  /* First make sure the handling of the `__getopt_nonoption_flags'
+     string can work normally.  Our top argument must be in the range
+     of the string.  */
+  if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
+    {
+      /* We must extend the array.  The user plays games with us and
+	 presents new arguments.  */
+      char *new_str = malloc (top + 1);
+      if (new_str == NULL)
+	nonoption_flags_len = nonoption_flags_max_len = 0;
+      else
+	{
+	  memset (__mempcpy (new_str, __getopt_nonoption_flags,
+			     nonoption_flags_max_len),
+		  '\0', top + 1 - nonoption_flags_max_len);
+	  nonoption_flags_max_len = top + 1;
+	  __getopt_nonoption_flags = new_str;
+	}
+    }
+#endif
+
+  while (top > middle && middle > bottom)
+    {
+      if (top - middle > middle - bottom)
+	{
+	  /* Bottom segment is the short one.  */
+	  int len = middle - bottom;
+	  register int i;
+
+	  /* Swap it with the top part of the top segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[top - (middle - bottom) + i];
+	      argv[top - (middle - bottom) + i] = tem;
+	      SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
+	    }
+	  /* Exclude the moved bottom segment from further swapping.  */
+	  top -= len;
+	}
+      else
+	{
+	  /* Top segment is the short one.  */
+	  int len = top - middle;
+	  register int i;
+
+	  /* Swap it with the bottom part of the bottom segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[middle + i];
+	      argv[middle + i] = tem;
+	      SWAP_FLAGS (bottom + i, middle + i);
+	    }
+	  /* Exclude the moved top segment from further swapping.  */
+	  bottom += len;
+	}
+    }
+
+  /* Update records for the slots the non-options now occupy.  */
+
+  gos->first_nonopt += (gos->optind - gos->last_nonopt);
+  gos->last_nonopt = gos->optind;
+}
+
+/* Initialize the internal data   */
+
+void
+getopt_initialize_r (struct getopt_state_r *gos, int argc,
+		     char * const *argv, const char *shortopts,
+		     const struct option *long_options,
+		     char **envp, struct KMKBUILTINCTX *pCtx)
+{
+  assert (shortopts != NULL);
+
+  /* General initialization. */
+  gos->optarg = NULL;
+  gos->optind = 1;
+  gos->__getopt_initialized = (void *)(uintptr_t)&exchange;
+  gos->opterr = 1;
+  gos->optopt = '?';
+  gos->argc = argc;
+  gos->argv = argv;
+  gos->optstring = shortopts;
+  gos->len_optstring = strlen (shortopts);
+  gos->long_options = long_options;
+  gos->pCtx = pCtx;
+
+  /* Start processing options with ARGV-element 1 (since ARGV-element 0
+     is the program name); the sequence of previously skipped
+     non-option ARGV-elements is empty.  */
+
+  gos->first_nonopt = gos->last_nonopt = gos->optind;
+
+  gos->nextchar = NULL;
+
+  if (!envp)
+    gos->posixly_correct = getenv("POSIXLY_CORRECT");
+  else
+    {
+      const char *psz;
+      size_t i = 0;
+      gos->posixly_correct = NULL;
+      while ((psz = envp[i]) != NULL)
+	{
+	  if (   psz[0] == 'P'
+	      && strncmp (psz, "POSIXLY_CORRECT=", sizeof("POSIXLY_CORRECT=") - 1) == 0)
+	    {
+	      gos->posixly_correct = psz + sizeof("POSIXLY_CORRECT=") - 1;
+	      break;
+	    }
+	  i++;
+	}
+    }
+
+  /* Determine how to handle the ordering of options and nonoptions.  */
+
+  if (shortopts[0] == '-')
+    {
+      gos->ordering = RETURN_IN_ORDER;
+      gos->optstring++;
+      gos->len_optstring--;
+    }
+  else if (shortopts[0] == '+')
+    {
+      gos->ordering = REQUIRE_ORDER;
+      gos->optstring++;
+      gos->len_optstring--;
+    }
+  else if (gos->posixly_correct != NULL)
+    gos->ordering = REQUIRE_ORDER;
+  else
+    gos->ordering = PERMUTE;
+
+#if 0 //def _LIBC
+  if (posixly_correct == NULL
+      && argc == original_argc && argv == original_argv)
+    {
+      if (nonoption_flags_max_len == 0)
+	{
+	  if (__getopt_nonoption_flags == NULL
+	      || __getopt_nonoption_flags[0] == '\0')
+	    nonoption_flags_max_len = -1;
+	  else
+	    {
+	      const char *orig_str = __getopt_nonoption_flags;
+	      int len = nonoption_flags_max_len = strlen (orig_str);
+	      if (nonoption_flags_max_len < argc)
+		nonoption_flags_max_len = argc;
+	      __getopt_nonoption_flags =
+		(char *) malloc (nonoption_flags_max_len);
+	      if (__getopt_nonoption_flags == NULL)
+		nonoption_flags_max_len = -1;
+	      else
+		memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
+			'\0', nonoption_flags_max_len - len);
+	    }
+	}
+      nonoption_flags_len = nonoption_flags_max_len;
+    }
+  else
+    nonoption_flags_len = 0;
+#endif
+
+  //return optstring;
+}
+
+/* Scan elements of ARGV (whose length is ARGC) for option characters
+   given in OPTSTRING.
+
+   If an element of ARGV starts with '-', and is not exactly "-" or "--",
+   then it is an option element.  The characters of this element
+   (aside from the initial '-') are option characters.  If `getopt'
+   is called repeatedly, it returns successively each of the option characters
+   from each of the option elements.
+
+   If `getopt' finds another option character, it returns that character,
+   updating `optind' and `nextchar' so that the next call to `getopt' can
+   resume the scan with the following option character or ARGV-element.
+
+   If there are no more option characters, `getopt' returns -1.
+   Then `optind' is the index in ARGV of the first ARGV-element
+   that is not an option.  (The ARGV-elements have been permuted
+   so that those that are not options now come last.)
+
+   OPTSTRING is a string containing the legitimate option characters.
+   If an option character is seen that is not listed in OPTSTRING,
+   return '?' after printing an error message.  If you set `opterr' to
+   zero, the error message is suppressed but we still return '?'.
+
+   If a char in OPTSTRING is followed by a colon, that means it wants an arg,
+   so the following text in the same ARGV-element, or the text of the following
+   ARGV-element, is returned in `optarg'.  Two colons mean an option that
+   wants an optional arg; if there is text in the current ARGV-element,
+   it is returned in `optarg', otherwise `optarg' is set to zero.
+
+   If OPTSTRING starts with `-' or `+', it requests different methods of
+   handling the non-option ARGV-elements.
+   See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
+
+   Long-named options begin with `--' instead of `-'.
+   Their names may be abbreviated as long as the abbreviation is unique
+   or is an exact match for some defined option.  If they have an
+   argument, it follows the option name in the same ARGV-element, separated
+   from the option name by a `=', or else the in next ARGV-element.
+   When `getopt' finds a long-named option, it returns 0 if that option's
+   `flag' field is nonzero, the value of the option's `val' field
+   if the `flag' field is zero.
+
+   The elements of ARGV aren't really const, because we permute them.
+   But we pretend they're const in the prototype to be compatible
+   with other systems.
+
+   LONGOPTS is a vector of `struct option' terminated by an
+   element containing a name which is zero.
+
+   LONGIND returns the index in LONGOPT of the long-named option found.
+   It is only valid when a long-named option has been found by the most
+   recent call.
+
+   If LONG_ONLY is nonzero, '-' as well as '--' can introduce
+   long-named options.  */
+
+int
+_getopt_internal_r (struct getopt_state_r *gos, const struct option *longopts,
+		    int *longind, int long_only)
+{
+  assert (gos->__getopt_initialized == (void *)(uintptr_t)&exchange);
+  gos->optarg = NULL;
+
+#if 0 /* requires explicit call now */
+  if (gos->optind == 0 || !gos->__getopt_initialized)
+    {
+      if (gos->optind == 0)
+	gos->optind = 1;	/* Don't scan ARGV[0], the program name.  */
+      optstring = _getopt_initialize_r (gos, gos->argc, gos->argv, optstring);
+      gos->__getopt_initialized = 1;
+    }
+#else
+  assert (gos->__getopt_initialized == (void *)(uintptr_t)&exchange);
+#endif
+
+  /* Test whether ARGV[optind] points to a non-option argument.
+     Either it does not have option syntax, or there is an environment flag
+     from the shell indicating it is not an option.  The later information
+     is only used when the used in the GNU libc.  */
+#if 0 //def _LIBC
+# define NONOPTION_P (gos->argv[gos->optind][0] != '-' || gos->argv[gos->optind][1] == '\0'	      \
+		      || (gos->optind < gos->nonoption_flags_len			      \
+			  && gos->__getopt_nonoption_flags[gos->optind] == '1'))
+#else
+# define NONOPTION_P (gos->argv[gos->optind][0] != '-' || gos->argv[gos->optind][1] == '\0')
+#endif
+
+  if (gos->nextchar == NULL || *gos->nextchar == '\0')
+    {
+      /* Advance to the next ARGV-element.  */
+
+      /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
+	 moved back by the user (who may also have changed the arguments).  */
+      if (gos->last_nonopt > gos->optind)
+	gos->last_nonopt = gos->optind;
+      if (gos->first_nonopt > gos->optind)
+	gos->first_nonopt = gos->optind;
+
+      if (gos->ordering == PERMUTE)
+	{
+	  /* If we have just processed some options following some non-options,
+	     exchange them so that the options come first.  */
+
+	  if (gos->first_nonopt != gos->last_nonopt && gos->last_nonopt != gos->optind)
+	    exchange (gos, (char **) gos->argv);
+	  else if (gos->last_nonopt != gos->optind)
+	    gos->first_nonopt = gos->optind;
+
+	  /* Skip any additional non-options
+	     and extend the range of non-options previously skipped.  */
+
+	  while (gos->optind < gos->argc && NONOPTION_P)
+	    gos->optind++;
+	  gos->last_nonopt = gos->optind;
+	}
+
+      /* The special ARGV-element `--' means premature end of options.
+	 Skip it like a null option,
+	 then exchange with previous non-options as if it were an option,
+	 then skip everything else like a non-option.  */
+
+      if (gos->optind != gos->argc && !strcmp (gos->argv[gos->optind], "--"))
+	{
+	  gos->optind++;
+
+	  if (gos->first_nonopt != gos->last_nonopt && gos->last_nonopt != gos->optind)
+	    exchange (gos, (char **) gos->argv);
+	  else if (gos->first_nonopt == gos->last_nonopt)
+	    gos->first_nonopt = gos->optind;
+	  gos->last_nonopt = gos->argc;
+
+	  gos->optind = gos->argc;
+	}
+
+      /* If we have done all the ARGV-elements, stop the scan
+	 and back over any non-options that we skipped and permuted.  */
+
+      if (gos->optind == gos->argc)
+	{
+	  /* Set the next-arg-index to point at the non-options
+	     that we previously skipped, so the caller will digest them.  */
+	  if (gos->first_nonopt != gos->last_nonopt)
+	    gos->optind = gos->first_nonopt;
+	  return -1;
+	}
+
+      /* If we have come to a non-option and did not permute it,
+	 either stop the scan or describe it to the caller and pass it by.  */
+
+      if (NONOPTION_P)
+	{
+	  if (gos->ordering == REQUIRE_ORDER)
+	    return -1;
+	  gos->optarg = gos->argv[gos->optind++];
+	  return 1;
+	}
+
+      /* We have found another option-ARGV-element.
+	 Skip the initial punctuation.  */
+
+      gos->nextchar = (gos->argv[gos->optind] + 1
+		    + (longopts != NULL && gos->argv[gos->optind][1] == '-'));
+    }
+
+  /* Decode the current option-ARGV-element.  */
+
+  /* Check whether the ARGV-element is a long option.
+
+     If long_only and the ARGV-element has the form "-f", where f is
+     a valid short option, don't consider it an abbreviated form of
+     a long option that starts with f.  Otherwise there would be no
+     way to give the -f short option.
+
+     On the other hand, if there's a long option "fubar" and
+     the ARGV-element is "-fu", do consider that an abbreviation of
+     the long option, just like "--fu", and not "-f" with arg "u".
+
+     This distinction seems to be the most useful approach.  */
+
+  if (longopts != NULL
+      && (gos->argv[gos->optind][1] == '-'
+	  || (long_only
+	      && (  gos->argv[gos->optind][2]
+		  || !memchr (gos->optstring, gos->argv[gos->optind][1], gos->len_optstring) )
+	      )
+	  )
+      )
+    {
+      char *nameend;
+      const struct option *p;
+      const struct option *pfound = NULL;
+      int exact = 0;
+      int ambig = 0;
+      int indfound = -1;
+      int option_index;
+
+      for (nameend = gos->nextchar; *nameend && *nameend != '='; nameend++)
+	/* Do nothing.  */ ;
+
+      /* Test all long options for either exact match
+	 or abbreviated matches.  */
+      for (p = longopts, option_index = 0; p->name; p++, option_index++)
+	if (!strncmp (p->name, gos->nextchar, nameend - gos->nextchar))
+	  {
+	    if ((unsigned int) (nameend - gos->nextchar)
+		== (unsigned int) strlen (p->name))
+	      {
+		/* Exact match found.  */
+		pfound = p;
+		indfound = option_index;
+		exact = 1;
+		break;
+	      }
+	    else if (pfound == NULL)
+	      {
+		/* First nonexact match found.  */
+		pfound = p;
+		indfound = option_index;
+	      }
+	    else
+	      /* Second or later nonexact match found.  */
+	      ambig = 1;
+	  }
+
+      if (ambig && !exact)
+	{
+	  if (gos->opterr)
+	    errx (gos->pCtx, 2, _("%s: option '%s' is ambiguous"),
+		  gos->argv[0], gos->argv[gos->optind]);
+	  gos->nextchar += strlen (gos->nextchar);
+	  gos->optind++;
+	  gos->optopt = 0;
+	  return '?';
+	}
+
+      if (pfound != NULL)
+	{
+	  option_index = indfound;
+	  gos->optind++;
+	  if (*nameend)
+	    {
+	      /* Don't test has_arg with >, because some C compilers don't
+		 allow it to be used on enums.  */
+	      if (pfound->has_arg)
+		gos->optarg = nameend + 1;
+	      else
+		{
+		  if (gos->opterr)
+		  { /* bird: disambiguate */
+		   if (gos->argv[gos->optind - 1][1] == '-')
+		    /* --option */
+		    errx (gos->pCtx, 2,
+			  _("%s: option '--%s' doesn't allow an argument\n"),
+			  gos->argv[0], pfound->name);
+		   else
+		    /* +option or -option */
+		    errx (gos->pCtx, 2,
+			  _("%s: option '%c%s' doesn't allow an argument\n"),
+			  gos->argv[0], gos->argv[gos->optind - 1][0], pfound->name);
+		  }
+
+		  gos->nextchar += strlen (gos->nextchar);
+
+		  gos->optopt = pfound->val;
+		  return '?';
+		}
+	    }
+	  else if (pfound->has_arg == 1)
+	    {
+	      if (gos->optind < gos->argc)
+		gos->optarg = gos->argv[gos->optind++];
+	      else
+		{
+		  if (gos->opterr)
+		    errx (gos->pCtx, 2,
+			  _("%s: option '%s' requires an argument\n"),
+			  gos->argv[0], gos->argv[gos->optind - 1]);
+		  gos->nextchar += strlen (gos->nextchar);
+		  gos->optopt = pfound->val;
+		  return gos->optstring[0] == ':' ? ':' : '?';
+		}
+	    }
+	  gos->nextchar += strlen (gos->nextchar);
+	  if (longind != NULL)
+	    *longind = option_index;
+	  if (pfound->flag)
+	    {
+	      *(pfound->flag) = pfound->val;
+	      return 0;
+	    }
+	  return pfound->val;
+	}
+
+      /* Can't find it as a long option.  If this is not getopt_long_only,
+	 or the option starts with '--' or is not a valid short
+	 option, then it's an error.
+	 Otherwise interpret it as a short option.  */
+      if (!long_only || gos->argv[gos->optind][1] == '-'
+	  || memchr(gos->optstring, *gos->nextchar, gos->len_optstring) == NULL)
+	{
+	  if (gos->opterr)
+	    {
+	      if (gos->argv[gos->optind][1] == '-')
+		/* --option */
+		errx (gos->pCtx, 2, _("%s: unrecognized option '--%s'\n"),
+		      gos->argv[0], gos->nextchar);
+	      else
+		/* +option or -option */
+		errx (gos->pCtx, 2, _("%s: unrecognized option '%c%s'\n"),
+		      gos->argv[0], gos->argv[gos->optind][0], gos->nextchar);
+	    }
+	  gos->nextchar = (char *) "";
+	  gos->optind++;
+	  gos->optopt = 0;
+	  return '?';
+	}
+    }
+
+  /* Look at and handle the next short option-character.  */
+
+  {
+    char c = *gos->nextchar++;
+    char *temp = (char *)memchr (gos->optstring, c, gos->len_optstring);
+
+    /* Increment `optind' when we start to process its last character.  */
+    if (*gos->nextchar == '\0')
+      ++gos->optind;
+
+    if (temp == NULL || c == ':')
+      {
+	if (gos->opterr)
+	  {
+	    if (gos->posixly_correct)
+	      /* 1003.2 specifies the format of this message.  */
+	      errx (gos->pCtx, 2, _("%s: illegal option -- %c\n"),
+		    gos->argv[0], c);
+	    else
+	      errx (gos->pCtx, 2, _("%s: invalid option -- %c\n"),
+		    gos->argv[0], c);
+	  }
+	gos->optopt = c;
+	return '?';
+      }
+    /* Convenience. Treat POSIX -W foo same as long option --foo */
+    if (temp[0] == 'W' && temp[1] == ';')
+      {
+	char *nameend;
+	const struct option *p;
+	const struct option *pfound = NULL;
+	int exact = 0;
+	int ambig = 0;
+	int indfound = 0;
+	int option_index;
+
+	/* This is an option that requires an argument.  */
+	if (*gos->nextchar != '\0')
+	  {
+	    gos->optarg = gos->nextchar;
+	    /* If we end this ARGV-element by taking the rest as an arg,
+	       we must advance to the next element now.  */
+	    gos->optind++;
+	  }
+	else if (gos->optind == gos->argc)
+	  {
+	    if (gos->opterr)
+	      {
+		/* 1003.2 specifies the format of this message.  */
+		errx (gos->pCtx, 2, _("%s: option requires an argument -- %c\n"),
+		      gos->argv[0], c);
+	      }
+	    gos->optopt = c;
+	    if (gos->optstring[0] == ':')
+	      c = ':';
+	    else
+	      c = '?';
+	    return c;
+	  }
+	else
+	  /* We already incremented `optind' once;
+	     increment it again when taking next ARGV-elt as argument.  */
+	  gos->optarg = gos->argv[gos->optind++];
+
+	/* optarg is now the argument, see if it's in the
+	   table of longopts.  */
+
+	for (gos->nextchar = nameend = gos->optarg; *nameend && *nameend != '='; nameend++)
+	  /* Do nothing.  */ ;
+
+	/* Test all long options for either exact match
+	   or abbreviated matches.  */
+	for (p = longopts, option_index = 0; p->name; p++, option_index++)
+	  if (!strncmp (p->name, gos->nextchar, nameend - gos->nextchar))
+	    {
+	      if ((unsigned int) (nameend - gos->nextchar) == strlen (p->name))
+		{
+		  /* Exact match found.  */
+		  pfound = p;
+		  indfound = option_index;
+		  exact = 1;
+		  break;
+		}
+	      else if (pfound == NULL)
+		{
+		  /* First nonexact match found.  */
+		  pfound = p;
+		  indfound = option_index;
+		}
+	      else
+		/* Second or later nonexact match found.  */
+		ambig = 1;
+	    }
+	if (ambig && !exact)
+	  {
+	    if (gos->opterr)
+	      errx (gos->pCtx, 2, _("%s: option '-W %s' is ambiguous\n"),
+		    gos->argv[0], gos->argv[gos->optind]);
+	    gos->nextchar += strlen (gos->nextchar);
+	    gos->optind++;
+	    return '?';
+	  }
+	if (pfound != NULL)
+	  {
+	    option_index = indfound;
+	    if (*nameend)
+	      {
+		/* Don't test has_arg with >, because some C compilers don't
+		   allow it to be used on enums.  */
+		if (pfound->has_arg)
+		  gos->optarg = nameend + 1;
+		else
+		  {
+		    if (gos->opterr)
+		      errx (gos->pCtx, 2,
+			    _("%s: option '-W %s' doesn't allow an argument\n"),
+			    gos->argv[0], pfound->name);
+
+		    gos->nextchar += strlen (gos->nextchar);
+		    return '?';
+		  }
+	      }
+	    else if (pfound->has_arg == 1)
+	      {
+		if (gos->optind < gos->argc)
+		  gos->optarg = gos->argv[gos->optind++];
+		else
+		  {
+		    if (gos->opterr)
+		      errx (gos->pCtx, 2,
+			    _("%s: option '%s' requires an argument\n"),
+			    gos->argv[0], gos->argv[gos->optind - 1]);
+		    gos->nextchar += strlen (gos->nextchar);
+		    return gos->optstring[0] == ':' ? ':' : '?';
+		  }
+	      }
+	    gos->nextchar += strlen (gos->nextchar);
+	    if (longind != NULL)
+	      *longind = option_index;
+	    if (pfound->flag)
+	      {
+		*(pfound->flag) = pfound->val;
+		return 0;
+	      }
+	    return pfound->val;
+	  }
+	  gos->nextchar = NULL;
+	  return 'W';	/* Let the application handle it.   */
+      }
+    if (temp[1] == ':')
+      {
+	if (temp[2] == ':')
+	  {
+	    /* This is an option that accepts an argument optionally.  */
+	    if (*gos->nextchar != '\0')
+	      {
+		gos->optarg = gos->nextchar;
+		gos->optind++;
+	      }
+	    else
+	      gos->optarg = NULL;
+	    gos->nextchar = NULL;
+	  }
+	else
+	  {
+	    /* This is an option that requires an argument.  */
+	    if (*gos->nextchar != '\0')
+	      {
+		gos->optarg = gos->nextchar;
+		/* If we end this ARGV-element by taking the rest as an arg,
+		   we must advance to the next element now.  */
+		gos->optind++;
+	      }
+	    else if (gos->optind == gos->argc)
+	      {
+		if (gos->opterr)
+		  {
+		    /* 1003.2 specifies the format of this message.  */
+		    errx (gos->pCtx, 2,
+			  _("%s: option requires an argument -- %c\n"),
+			  gos->argv[0], c);
+		  }
+		gos->optopt = c;
+		if (gos->optstring[0] == ':')
+		  c = ':';
+		else
+		  c = '?';
+	      }
+	    else
+	      /* We already incremented `optind' once;
+		 increment it again when taking next ARGV-elt as argument.  */
+	      gos->optarg = gos->argv[gos->optind++];
+	    gos->nextchar = NULL;
+	  }
+      }
+    return c;
+  }
+}
+
+int
+getopt_r (struct getopt_state_r *gos)
+{
+  return _getopt_internal_r (gos, NULL, NULL, 0);
+}
+
+#endif /* #if 1 */ /* Not ELIDE_CODE.  */
+
+#ifdef TEST
+
+/* Compile with -DTEST to make an executable for use in testing
+   the above definition of `getopt'.  */
+
+int
+main (int argc, char **argv)
+{
+  int c;
+  int digit_optind = 0;
+  struct getopt_state_r = gos;
+
+  getopt_initialize_r (&gos, argc, argv, "abc:d:0123456789", NULL, NULL, NULL);
+
+  while (1)
+    {
+      int this_option_optind = gos.optind ? gos.optind : 1;
+
+      c = getopt_r (&gos);
+      if (c == -1)
+	break;
+
+      switch (c)
+	{
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+	  if (digit_optind != 0 && digit_optind != this_option_optind)
+	    printf ("digits occur in two different argv-elements.\n");
+	  digit_optind = this_option_optind;
+	  printf ("option %c\n", c);
+	  break;
+
+	case 'a':
+	  printf ("option a\n");
+	  break;
+
+	case 'b':
+	  printf ("option b\n");
+	  break;
+
+	case 'c':
+	  printf ("option c with value '%s'\n", optarg);
+	  break;
+
+	case '?':
+	  break;
+
+	default:
+	  printf ("?? getopt returned character code 0%o ??\n", c);
+	}
+    }
+
+  if (gos.optind < argc)
+    {
+      printf ("non-option ARGV-elements: ");
+      while (gos.optind < argc)
+	printf ("%s ", argv[gos.optind++]);
+      printf ("\n");
+    }
+
+  exit (0);
+}
+
+#endif /* TEST */
diff --git a/src/kmk/kmkbuiltin/getopt_r.h b/src/kmk/kmkbuiltin/getopt_r.h
new file mode 100644
index 0000000..b9f3c8b
--- /dev/null
+++ b/src/kmk/kmkbuiltin/getopt_r.h
@@ -0,0 +1,182 @@
+/* Reentrant version of getopt.
+
+Based on ../getopt*.*:
+
+   Declarations for getopt.
+Copyright (C) 1989-2016 Free Software Foundation, Inc.
+
+NOTE: The canonical source of this file is maintained with the GNU C Library.
+Bugs can be reported to bug-glibc@gnu.org.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Modifications:
+  Copyright (c) 2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+*/
+
+/* Not quite safe to mix when converting code. */
+#ifdef _GETOPT_H
+# define _GETOPT_H "getopt.h was included already"
+# error "getopt.h was included already"
+#endif
+
+#ifndef INCLUDED_GETOPT_R_H
+#define INCLUDED_GETOPT_R_H 1
+
+#include <stddef.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+typedef struct getopt_state_r
+{
+
+/* For communication from `getopt' to the caller.
+   When `getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+/*extern*/ char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to `getopt'.
+
+   On entry to `getopt', zero means this is the first call; initialize.
+
+   When `getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+/*extern*/ int optind;
+
+/* Callers store zero here to inhibit the error message `getopt' prints
+   for unrecognized options.  */
+
+/*extern*/ int opterr;
+
+/* Set to an option character which was unrecognized.  */
+
+/*extern*/ int optopt;
+
+
+/* Internal state: */
+
+/* The next char to be scanned in the option-element
+   in which the last option character we returned was found.
+   This allows us to pick up the scan where we left off.
+
+   If this is zero, or a null string, it means resume the scan
+   by advancing to the next ARGV-element.  */
+
+/*static*/ char *nextchar;
+
+/* REQUIRE_ORDER, PERMUTE or RETURN_IN_ORDER, see getopt_r.c. */
+/*static*/ int ordering;
+
+/* Value of POSIXLY_CORRECT environment variable.  */
+/*static*/ const char *posixly_correct; /* bird: added 'const' */
+
+/* Describe the part of ARGV that contains non-options that have
+   been skipped.  `first_nonopt' is the index in ARGV of the first of them;
+   `last_nonopt' is the index after the last of them.  */
+
+/*static*/ int first_nonopt;
+/*static*/ int last_nonopt;
+
+/* Mainly for asserting usage sanity. */
+/*static*/ void *__getopt_initialized;
+
+/* New internal state (to resubmitting same parameters in each call): */
+  /* new: the argument vector length. */
+  int argc;
+  /* new: the argument vector. */
+  char * const *argv;
+  /* new: the short option string (can be NULL/empty). */
+  const char *optstring;
+  /* new: the short option string length. */
+  size_t len_optstring;
+  /* new: the long options (can be NULL) */
+  const struct option *long_options;
+  /* Output context for err.h. */
+  struct KMKBUILTINCTX *pCtx;
+} getopt_state_r;
+
+
+#ifndef no_argument
+
+/* Describe the long-named options requested by the application.
+   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+   of `struct option' terminated by an element containing a name which is
+   zero.
+
+   The field `has_arg' is:
+   no_argument		(or 0) if the option does not take an argument,
+   required_argument	(or 1) if the option requires an argument,
+   optional_argument 	(or 2) if the option takes an optional argument.
+
+   If the field `flag' is not NULL, it points to a variable that is set
+   to the value given in the field `val' when the option is found, but
+   left unchanged if the option is not found.
+
+   To have a long-named option do something other than set an `int' to
+   a compiled-in constant, such as set a value from `optarg', set the
+   option's `flag' field to zero and its `val' field to a nonzero
+   value (the equivalent single-letter option character, if there is
+   one).  For long options that have a zero `flag' field, `getopt'
+   returns the contents of the `val' field.  */
+
+struct option
+{
+#if defined (__STDC__) && __STDC__
+  const char *name;
+#else
+  char *name;
+#endif
+  /* has_arg can't be an enum because some compilers complain about
+     type mismatches in all the code that assumes it is an int.  */
+  int has_arg;
+  int *flag;
+  int val;
+};
+
+/* Names for the values of the `has_arg' field of `struct option'.  */
+
+#define	no_argument		0
+#define required_argument	1
+#define optional_argument	2
+
+#endif /* Same as ../getopt.h.  Fix later? */
+
+extern void getopt_initialize_r (struct getopt_state_r *gos, int argc,
+                                 char *const *argv, const char *shortopts,
+		                 const struct option *longopts,
+                                 char **envp, struct KMKBUILTINCTX *pCtx);
+extern int getopt_r (struct getopt_state_r *gos);
+extern int getopt_long_r (struct getopt_state_r *gos, int *longind);
+extern int getopt_long_only_r (struct getopt_state_r *gos, int *longind);
+
+/* Internal only.  Users should not call this directly.  */
+extern int _getopt_internal_r (struct getopt_state_r *gos,
+                               const struct option *longopts,
+                               int *longind, int long_only);
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* getopt_r.h */
diff --git a/src/kmk/kmkbuiltin/haikufakes.c b/src/kmk/kmkbuiltin/haikufakes.c
new file mode 100644
index 0000000..15b4a3a
--- /dev/null
+++ b/src/kmk/kmkbuiltin/haikufakes.c
@@ -0,0 +1,53 @@
+/* $Id: haikufakes.c 2546 2011-10-01 19:49:54Z bird $ */
+/** @file
+ * Fake Unix/BSD stuff for Haiku.
+ */
+
+/*
+ * Copyright (c) 2005-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "config.h"
+#include <errno.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include "haikufakes.h"
+
+
+int haiku_lchmod(const char *pszPath, mode_t mode)
+{
+    /*
+     * Weed out symbolic links.
+     */
+    struct stat s;
+    if (    !lstat(pszPath, &s)
+        &&  S_ISLNK(s.st_mode))
+    {
+        errno = -ENOSYS;
+        return -1;
+    }
+
+    return chmod(pszPath, mode);
+}
+
diff --git a/src/kmk/kmkbuiltin/haikufakes.h b/src/kmk/kmkbuiltin/haikufakes.h
new file mode 100644
index 0000000..eff20bb
--- /dev/null
+++ b/src/kmk/kmkbuiltin/haikufakes.h
@@ -0,0 +1,42 @@
+/* $Id: haikufakes.h 2656 2012-09-10 20:39:16Z bird $ */
+/** @file
+ * Unix/BSD fakes for Haiku.
+ */
+
+/*
+ * Copyright (c) 2005-2012 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef ___haikufakes_h
+#define ___haikufakes_h
+
+#define EX_OK 0
+#define EX_OSERR 1
+#define EX_NOUSER 1
+#define EX_USAGE 1
+#define EX_TEMPFAIL 1
+#define EX_SOFTWARE 1
+
+#define lutimes(path, tvs) utimes(path, tvs)
+#define lchmod             haiku_lchmod
+
+extern int haiku_lchmod(const char *pszPath, mode_t mode);
+
+#endif
+
diff --git a/src/kmk/kmkbuiltin/install.c b/src/kmk/kmkbuiltin/install.c
new file mode 100644
index 0000000..a6d1ca8
--- /dev/null
+++ b/src/kmk/kmkbuiltin/install.c
@@ -0,0 +1,1248 @@
+/*
+ * Copyright (c) 1987, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0 /*ndef lint*/
+static const char copyright[] =
+"@(#) Copyright (c) 1987, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)xinstall.c	8.1 (Berkeley) 7/21/93";
+#endif /* not lint */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/usr.bin/xinstall/xinstall.c,v 1.66 2005/01/25 14:34:57 ssouhlal Exp $");
+#endif
+
+#define FAKES_NO_GETOPT_H
+#include "config.h"
+#ifndef _MSC_VER
+# include <sys/param.h>
+# if !defined(__HAIKU__) && !defined(__gnu_hurd__)
+#  include <sys/mount.h>
+# endif
+# include <sys/wait.h>
+# include <sys/time.h>
+#endif /* !_MSC_VER */
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include "err.h"
+#include <errno.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <paths.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifndef __HAIKU__
+# include <sysexits.h>
+#endif
+#ifdef __NetBSD__
+# include <util.h>
+# define strtofflags(a, b, c)	string_to_flags(a, b, c)
+#endif
+#include <unistd.h>
+#if defined(__EMX__) || defined(_MSC_VER)
+# include <process.h>
+#endif
+#include "getopt_r.h"
+#ifdef __sun__
+# include "solfakes.h"
+#endif
+#ifdef _MSC_VER
+# include "mscfakes.h"
+#endif
+#ifdef __HAIKU__
+# include "haikufakes.h"
+#endif
+#include "kmkbuiltin.h"
+#include "k/kDefs.h"	/* for K_OS */
+#include "dos2unix.h"
+
+
+extern void * bsd_setmode(const char *p);
+extern mode_t bsd_getmode(const void *bbox, mode_t omode);
+
+#ifndef MAXBSIZE
+# define MAXBSIZE 0x20000
+#endif
+
+#define MAX_CMP_SIZE	(16 * 1024 * 1024)
+
+#define	DIRECTORY	0x01		/* Tell install it's a directory. */
+#define	SETFLAGS	0x02		/* Tell install to set flags. */
+#define	NOCHANGEBITS	(UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND)
+#define	BACKUP_SUFFIX	".old"
+
+#ifndef O_BINARY
+# define O_BINARY 0
+#endif
+
+#ifndef EFTYPE
+# define EFTYPE EINVAL
+#endif
+
+#if defined(__WIN32__) || defined(__WIN64__) || defined(__OS2__)
+# define IS_SLASH(ch)   ((ch) == '/' || (ch) == '\\')
+#else
+# define IS_SLASH(ch)   ((ch) == '/')
+#endif
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct INSTALLINSTANCE
+{
+    PKMKBUILTINCTX pCtx;
+
+    gid_t gid;
+    uid_t uid;
+    int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose, mode_given;
+    mode_t mode;
+    const char *suffix;
+    int ignore_perm_errors;
+    int hard_link_files_when_possible;
+    int verbose_hard_link_refusal;
+    int verbose_hard_link_mode_mismatch;
+    int dos2unix;
+} INSTALLINSTANCE;
+typedef INSTALLINSTANCE *PINSTALLINSTANCE;
+
+enum
+{
+    kInstOpt_Help = 261,
+    kInstOpt_Version,
+    kInstOpt_Verbose,
+    kInstOpt_Quiet,
+    kInstOpt_IgnorePermErrors,
+    kInstOpt_NoIgnorePermErrors,
+    kInstOpt_HardLinkFilesWhenPossible,
+    kInstOpt_NoHardLinkFilesWhenPossible,
+    kInstOpt_Dos2Unix,
+    kInstOpt_Unix2Dos,
+    kInstOpt_VerboseHardLinkRefusal,
+    kInstOpt_QuietHardLinkRefusal,
+    kInstOpt_VerboseHardLinkModeMismatch,
+    kInstOpt_QuietHardLinkModeMismatch
+};
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static struct option long_options[] =
+{
+    { "help",   					no_argument, 0, kInstOpt_Help },
+    { "version",   					no_argument, 0, kInstOpt_Version },
+    { "quiet",   					no_argument, 0, kInstOpt_Quiet },
+    { "ignore-perm-errors",   				no_argument, 0, kInstOpt_IgnorePermErrors },
+    { "no-ignore-perm-errors",				no_argument, 0, kInstOpt_NoIgnorePermErrors },
+    { "hard-link-files-when-possible",			no_argument, 0, kInstOpt_HardLinkFilesWhenPossible },
+    { "no-hard-link-files-when-possible",		no_argument, 0, kInstOpt_NoHardLinkFilesWhenPossible },
+    { "verbose-hard-link-refusal",			no_argument, 0, kInstOpt_VerboseHardLinkRefusal },
+    { "quiet-hard-link-refusal",			no_argument, 0, kInstOpt_QuietHardLinkRefusal },
+    { "verbose-hard-link-mode-mismatch",		no_argument, 0, kInstOpt_VerboseHardLinkModeMismatch },
+    { "quiet-hard-link-mode-mismatch",			no_argument, 0, kInstOpt_QuietHardLinkModeMismatch },
+    { "dos2unix",					no_argument, 0, kInstOpt_Dos2Unix },
+    { "unix2dos",					no_argument, 0, kInstOpt_Unix2Dos },
+#if 1 /* GNU coreutils compatibility: */
+    { "compare",   					no_argument, 0, 'C' },
+    { "directory",   					no_argument, 0, 'd' },
+    { "group",   					required_argument, 0, 'g' },
+    { "mode",   					required_argument, 0, 'm' },
+    { "owner",   					required_argument, 0, 'o' },
+    { "strip",   					no_argument, 0, 's' },
+    { "suffix",   					required_argument, 0, 'S' },
+    { "verbose",   					no_argument, 0, 'v' },
+#endif
+    { 0, 0,	0, 0 },
+};
+
+
+static int	copy(PINSTALLINSTANCE, int, const char *, int *, const char *);
+static int	compare(int, size_t, int, size_t);
+static int	create_newfile(PINSTALLINSTANCE, const char *, int, struct stat *);
+static int	create_tempfile(const char *, char *, size_t);
+static int	install(PINSTALLINSTANCE, const char *, const char *, u_long, u_int);
+static int	install_dir(PINSTALLINSTANCE, char *);
+static u_long	numeric_id(PINSTALLINSTANCE, const char *, const char *);
+static int	strip(PINSTALLINSTANCE, const char *);
+static int	usage(PKMKBUILTINCTX, int);
+static char    *last_slash(const char *);
+static KBOOL	needs_dos2unix_conversion(const char *pszFilename);
+static KBOOL	needs_unix2dos_conversion(const char *pszFilename);
+
+int
+kmk_builtin_install(int argc, char *argv[], char ** envp, PKMKBUILTINCTX pCtx)
+{
+	INSTALLINSTANCE This;
+	struct getopt_state_r gos;
+	struct stat from_sb, to_sb;
+	mode_t *set;
+	u_long fset = 0;
+	int ch, no_target;
+	u_int iflags;
+	char *flags;
+	const char *group, *owner, *to_name;
+	(void)envp;
+
+	/* Initialize global instance data. */
+	This.pCtx = pCtx;
+	This.mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
+	This.suffix = BACKUP_SUFFIX;
+	This.gid = 0;
+	This.uid = 0;
+	This.dobackup = 0;
+	This.docompare = 0;
+	This.dodir = 0;
+	This.dopreserve = 0;
+	This.dostrip = 0;
+	This.nommap = 0;
+	This.safecopy = 0;
+	This.verbose = 0;
+	This.mode_given = 0;
+	This.ignore_perm_errors = geteuid() != 0;
+	This.hard_link_files_when_possible = 0;
+	This.verbose_hard_link_refusal = 0;
+	This.verbose_hard_link_mode_mismatch = 0;
+	This.dos2unix = 0;
+
+	iflags = 0;
+	group = owner = NULL;
+	getopt_initialize_r(&gos, argc, argv, "B:bCcdf:g:Mm:o:pSsv", long_options, envp, pCtx);
+	while ((ch = getopt_long_r(&gos, NULL)) != -1)
+		switch(ch) {
+		case 'B':
+			This.suffix = gos.optarg;
+			/* FALLTHROUGH */
+		case 'b':
+			This.dobackup = 1;
+			break;
+		case 'C':
+			This.docompare = 1;
+			break;
+		case 'c':
+			/* For backwards compatibility. */
+			break;
+		case 'd':
+			This.dodir = 1;
+			break;
+		case 'f':
+#if defined(UF_IMMUTABLE) && K_OS != K_OS_GNU_KFBSD && K_OS != K_OS_GNU_HURD
+			flags = optarg;
+			if (strtofflags(&flags, &fset, NULL))
+				return errx(pCtx, EX_USAGE, "%s: invalid flag", flags);
+			iflags |= SETFLAGS;
+#else
+			(void)flags;
+#endif
+			break;
+		case 'g':
+			group = gos.optarg;
+			break;
+		case 'M':
+			This.nommap = 1;
+			break;
+                case 'm':
+			if (!(set = bsd_setmode(gos.optarg)))
+				return errx(pCtx, EX_USAGE, "invalid file mode: %s", gos.optarg);
+			This.mode = bsd_getmode(set, 0);
+			free(set);
+			This.mode_given = 1;
+			break;
+		case 'o':
+			owner = gos.optarg;
+			break;
+		case 'p':
+			This.docompare = This.dopreserve = 1;
+			break;
+		case 'S':
+			This.safecopy = 1;
+			This.verbose_hard_link_refusal = 0;
+			break;
+		case 's':
+			This.dostrip = 1;
+			This.verbose_hard_link_refusal = 0;
+			break;
+		case 'v':
+		case kInstOpt_Verbose:
+			This.verbose = 1;
+			break;
+		case kInstOpt_Quiet:
+			This.verbose = 0;
+			break;
+		case kInstOpt_Help:
+			usage(pCtx, 0);
+			return 0;
+		case kInstOpt_Version:
+			return kbuild_version(argv[0]);
+		case kInstOpt_IgnorePermErrors:
+			This.ignore_perm_errors = 1;
+			break;
+		case kInstOpt_NoIgnorePermErrors:
+			This.ignore_perm_errors = 0;
+			break;
+                case kInstOpt_HardLinkFilesWhenPossible:
+                        This.hard_link_files_when_possible = 1;
+                        break;
+                case kInstOpt_NoHardLinkFilesWhenPossible:
+                        This.hard_link_files_when_possible = 0;
+                        break;
+		case kInstOpt_VerboseHardLinkRefusal:
+			This.verbose_hard_link_refusal = 1;
+			break;
+		case kInstOpt_QuietHardLinkRefusal:
+			This.verbose_hard_link_refusal = 0;
+			break;
+		case kInstOpt_VerboseHardLinkModeMismatch:
+			This.verbose_hard_link_mode_mismatch = 1;
+			break;
+		case kInstOpt_QuietHardLinkModeMismatch:
+			This.verbose_hard_link_mode_mismatch = 0;
+			break;
+		case kInstOpt_Dos2Unix:
+			This.dos2unix = 1;
+			This.verbose_hard_link_refusal = 0;
+			break;
+		case kInstOpt_Unix2Dos:
+			This.dos2unix = -1;
+			This.verbose_hard_link_refusal = 0;
+			break;
+		case '?':
+		default:
+			return usage(pCtx, 1);
+		}
+	argc -= gos.optind;
+	argv += gos.optind;
+
+	/* some options make no sense when creating directories */
+	if (This.dostrip && This.dodir) {
+		warnx(pCtx, "-d and -s may not be specified together");
+		return usage(pCtx, 1);
+	}
+
+	/* must have at least two arguments, except when creating directories */
+	if (argc == 0 || (argc == 1 && !This.dodir))
+		return usage(pCtx, 1);
+
+	/*   and unix2dos doesn't combine well with a couple of other options. */
+	if (This.dos2unix != 0) {
+		if (This.docompare) {
+			warnx(pCtx, "-C/-p and --dos2unix/unix2dos may not be specified together");
+			return usage(pCtx, 1);
+		}
+		if (This.dostrip) {
+			warnx(pCtx, "-s and --dos2unix/unix2dos may not be specified together");
+			return usage(pCtx, 1);
+		}
+	}
+
+	/* need to make a temp copy so we can compare stripped version */
+	if (This.docompare && This.dostrip)
+		This.safecopy = 1;
+
+	/* get group and owner id's */
+	if (group != NULL) {
+#ifndef _MSC_VER
+		struct group *gp;
+		if ((gp = getgrnam(group)) != NULL)
+			This.gid = gp->gr_gid;
+		else
+#endif
+		{
+			This.gid = (gid_t)numeric_id(&This, group, "group");
+			if (This.gid == (gid_t)-1)
+				return 1;
+		}
+	} else
+		This.gid = (gid_t)-1;
+
+	if (owner != NULL) {
+#ifndef _MSC_VER
+                struct passwd *pp;
+		if ((pp = getpwnam(owner)) != NULL)
+			This.uid = pp->pw_uid;
+		else
+#endif
+		{
+			This.uid = (uid_t)numeric_id(&This, owner, "user");
+			if (This.uid == (uid_t)-1)
+				return 1;
+		}
+	} else
+		This.uid = (uid_t)-1;
+
+	if (This.dodir) {
+		for (; *argv != NULL; ++argv) {
+			int rc = install_dir(&This, *argv);
+			if (rc)
+				return rc;
+		}
+		return EX_OK;
+		/* NOTREACHED */
+	}
+
+	no_target = stat(to_name = argv[argc - 1], &to_sb);
+	if (!no_target && S_ISDIR(to_sb.st_mode)) {
+		for (; *argv != to_name; ++argv) {
+			int rc = install(&This, *argv, to_name, fset, iflags | DIRECTORY);
+			if (rc)
+				return rc;
+		}
+		return EX_OK;
+	}
+
+	/* can't do file1 file2 directory/file */
+	if (argc != 2) {
+		warnx(pCtx, "wrong number or types of arguments");
+		return usage(pCtx, 1);
+	}
+
+	if (!no_target) {
+		if (stat(*argv, &from_sb))
+			return err(pCtx, EX_OSERR, "%s", *argv);
+		if (!S_ISREG(to_sb.st_mode)) {
+			errno = EFTYPE;
+			return err(pCtx, EX_OSERR, "%s", to_name);
+		}
+		if (to_sb.st_dev == from_sb.st_dev &&
+                    to_sb.st_dev != 0 &&
+		    to_sb.st_ino == from_sb.st_ino &&
+		    to_sb.st_ino != 0 &&
+		    !This.hard_link_files_when_possible)
+			return errx(pCtx, EX_USAGE,
+			            "%s and %s are the same file", *argv, to_name);
+	}
+	return install(&This, *argv, to_name, fset, iflags);
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+mode_t g_fUMask;
+int main(int argc, char **argv, char **envp)
+{
+	KMKBUILTINCTX Ctx = { "kmk_install", NULL };
+	umask(g_fUMask = umask(0077));
+	return kmk_builtin_install(argc, argv, envp, &Ctx);
+}
+#endif
+
+static u_long
+numeric_id(PINSTALLINSTANCE pThis, const char *name, const char *type)
+{
+	u_long val;
+	char *ep;
+
+	/*
+	 * XXX
+	 * We know that uid_t's and gid_t's are unsigned longs.
+	 */
+	errno = 0;
+	val = strtoul(name, &ep, 10);
+	if (errno)
+		return err(pThis->pCtx, -1, "%s", name);
+	if (*ep != '\0')
+		return errx(pThis->pCtx, -1, "unknown %s %s", type, name);
+	return (val);
+}
+
+/*
+ * install --
+ *	build a path name and install the file
+ */
+static int
+install(PINSTALLINSTANCE pThis, const char *from_name, const char *to_name, u_long fset, u_int flags)
+{
+	struct stat from_sb, temp_sb, to_sb;
+	struct timeval tvb[2];
+	int devnull, files_match, from_fd, serrno, target;
+	int tempcopy, temp_fd, to_fd;
+	char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
+	int rc = EX_OK;
+
+	files_match = 0;
+	from_fd = -1;
+	to_fd = -1;
+	temp_fd = -1;
+
+	/* If try to install NULL file to a directory, fails. */
+	if (flags & DIRECTORY
+#if defined(__EMX__) || defined(_MSC_VER)
+	    || (   stricmp(from_name, _PATH_DEVNULL)
+		&& stricmp(from_name, "nul")
+# ifdef __EMX__
+		&& stricmp(from_name, "/dev/nul")
+# endif
+	       )
+#else
+	    || strcmp(from_name, _PATH_DEVNULL)
+#endif
+	    ) {
+		if (stat(from_name, &from_sb))
+			return err(pThis->pCtx, EX_OSERR, "%s", from_name);
+		if (!S_ISREG(from_sb.st_mode)) {
+			errno = EFTYPE;
+			return err(pThis->pCtx, EX_OSERR, "%s", from_name);
+		}
+		/* Build the target path. */
+		if (flags & DIRECTORY) {
+			(void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
+			    to_name,
+			    (p = last_slash(from_name)) ? ++p : from_name);
+			to_name = pathbuf;
+		}
+		devnull = 0;
+	} else {
+		devnull = 1;
+	}
+
+	target = stat(to_name, &to_sb) == 0;
+
+	/* Only install to regular files. */
+	if (target && !S_ISREG(to_sb.st_mode)) {
+		errno = EFTYPE;
+		warn(pThis->pCtx, "%s", to_name);
+		return EX_OK;
+	}
+
+	/* Only copy safe if the target exists. */
+	tempcopy = pThis->safecopy && target;
+
+	/* Try hard linking if wanted and possible. */
+	if (pThis->hard_link_files_when_possible)
+	{
+#ifdef KBUILD_OS_OS2
+		const char *why_not = "not supported on OS/2";
+#else
+		const char *why_not = NULL;
+		if (devnull) {
+			why_not = "/dev/null";
+		} else if (pThis->dostrip) {
+			why_not = "strip (-s)";
+		} else if (pThis->docompare) {
+			why_not = "compare (-C)";
+		} else if (pThis->dobackup) {
+			why_not = "backup (-b/-B)";
+		} else if (pThis->safecopy) {
+			why_not = "safe copy (-S)";
+		} else if (lstat(from_name, &temp_sb)) {
+			why_not = "lstat on source failed";
+		} else if (S_ISLNK(temp_sb.st_mode)) {
+			why_not = "symlink";
+		} else if (!S_ISREG(temp_sb.st_mode)) {
+			why_not = "not regular file";
+# if defined(KBUILD_OS_WINDOWS) || defined(KBUILD_OS_OS2)
+		} else if ((pThis->mode & S_IWUSR) != (from_sb.st_mode & S_IWUSR)) {
+# else
+		} else if (pThis->mode != (from_sb.st_mode & ALLPERMS)) {
+# endif
+			if (   pThis->verbose_hard_link_mode_mismatch
+			    || pThis->verbose_hard_link_refusal)
+				kmk_builtin_ctx_printf(pThis->pCtx, 0,
+					"install: warning: Not hard linking, mode differs: 0%03o, desires 0%03o\n"
+					"install: src path '%s'\n"
+					"install: dst path '%s'\n",
+					(from_sb.st_mode & ALLPERMS), pThis->mode, from_name, to_name);
+			why_not = NULL;
+		} else if (pThis->uid != (uid_t)-1 && pThis->uid != from_sb.st_uid) {
+			why_not = "uid mismatch";
+		} else if (pThis->gid != (gid_t)-1 && pThis->gid != from_sb.st_gid) {
+			why_not = "gid mismatch";
+		} else if (pThis->dos2unix > 0 && needs_dos2unix_conversion(from_name)) {
+			why_not = "dos2unix";
+		} else if (pThis->dos2unix < 0 && needs_unix2dos_conversion(from_name)) {
+			why_not = "unix2dos";
+		} else {
+			int rcLink = link(from_name, to_name);
+			if (rcLink != 0 && errno == EEXIST) {
+			    unlink(to_name);
+			    rcLink = link(from_name, to_name);
+			}
+			if (rcLink == 0) {
+			    if (pThis->verbose)
+				    kmk_builtin_ctx_printf(pThis->pCtx, 0,
+							   "install: %s -> %s (hardlinked)\n", from_name, to_name);
+			    goto l_done;
+			}
+			if (pThis->verbose)
+				kmk_builtin_ctx_printf(pThis->pCtx, 0, "install: hard linking '%s' to '%s' failed: %s\n",
+				       to_name, from_name, strerror(errno));
+			why_not = NULL;
+		}
+#endif
+		if (why_not && pThis->verbose_hard_link_refusal)
+		    kmk_builtin_ctx_printf(pThis->pCtx, 0, "install: not hard linking '%s' to '%s' because: %s\n",
+					   to_name, from_name, why_not);
+
+		/* Can't hard link or we failed, continue as nothing happend. */
+	}
+
+	if (!devnull && (from_fd = open(from_name, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0)) < 0)
+		return err(pThis->pCtx, EX_OSERR, "%s", from_name);
+
+	/* If we don't strip, we can compare first. */
+	if (pThis->docompare && !pThis->dostrip && target) {
+		if ((to_fd = open(to_name, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0)) < 0) {
+			rc = err(pThis->pCtx, EX_OSERR, "%s", to_name);
+			goto l_done;
+		}
+		if (devnull)
+			files_match = to_sb.st_size == 0;
+		else
+			files_match = !compare(from_fd, (size_t)from_sb.st_size,
+					       to_fd, (size_t)to_sb.st_size);
+
+		/* Close "to" file unless we match. */
+		if (!files_match) {
+			(void)close(to_fd);
+			to_fd = -1;
+		}
+	}
+
+	if (!files_match) {
+		if (tempcopy) {
+			to_fd = create_tempfile(to_name, tempfile,
+			    sizeof(tempfile));
+			if (to_fd < 0) {
+				rc = err(pThis->pCtx, EX_OSERR, "%s", tempfile);
+				goto l_done;
+			}
+		} else {
+			if ((to_fd = create_newfile(pThis, to_name, target, &to_sb)) < 0) {
+				rc = err(pThis->pCtx, EX_OSERR, "%s", to_name);
+				goto l_done;
+			}
+			if (pThis->verbose)
+				kmk_builtin_ctx_printf(pThis->pCtx, 0, "install: %s -> %s\n", from_name, to_name);
+		}
+		if (!devnull) {
+			rc = copy(pThis, from_fd, from_name, &to_fd, tempcopy ? tempfile : to_name);
+			if (rc)
+    				goto l_done;
+		}
+	}
+
+	if (pThis->dostrip) {
+#if defined(__EMX__) || defined(_MSC_VER)
+		/* close before we strip. */
+		close(to_fd);
+		to_fd = -1;
+#endif
+		rc = strip(pThis, tempcopy ? tempfile : to_name);
+		if (rc)
+			goto l_done;
+
+		/*
+		 * Re-open our fd on the target, in case we used a strip
+		 * that does not work in-place -- like GNU binutils strip.
+		 */
+#if !defined(__EMX__) && !defined(_MSC_VER)
+		close(to_fd);
+#endif
+		to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0);
+		if (to_fd < 0) {
+			rc = err(pThis->pCtx, EX_OSERR, "stripping %s", to_name);
+			goto l_done;
+		}
+	}
+
+	/*
+	 * Compare the stripped temp file with the target.
+	 */
+	if (pThis->docompare && pThis->dostrip && target) {
+		temp_fd = to_fd;
+
+		/* Re-open to_fd using the real target name. */
+		if ((to_fd = open(to_name, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0)) < 0) {
+			rc = err(pThis->pCtx, EX_OSERR, "%s", to_name);
+			goto l_done;
+		}
+
+		if (fstat(temp_fd, &temp_sb)) {
+			serrno = errno;
+			(void)unlink(tempfile);
+			errno = serrno;
+			rc = err(pThis->pCtx, EX_OSERR, "%s", tempfile);
+			goto l_done;
+		}
+
+		if (compare(temp_fd, (size_t)temp_sb.st_size,
+			    to_fd, (size_t)to_sb.st_size) == 0) {
+			/*
+			 * If target has more than one link we need to
+			 * replace it in order to snap the extra links.
+			 * Need to preserve target file times, though.
+			 */
+#if !defined(_MSC_VER) && !defined(__EMX__)
+			if (to_sb.st_nlink != 1) {
+				tvb[0].tv_sec = to_sb.st_atime;
+				tvb[0].tv_usec = 0;
+				tvb[1].tv_sec = to_sb.st_mtime;
+				tvb[1].tv_usec = 0;
+				(void)utimes(tempfile, tvb);
+			} else
+#endif
+                        {
+
+				files_match = 1;
+				(void)unlink(tempfile);
+			}
+			(void) close(temp_fd);
+			temp_fd = -1;
+		}
+	}
+
+	/*
+	 * Move the new file into place if doing a safe copy
+	 * and the files are different (or just not compared).
+	 */
+	if (tempcopy && !files_match) {
+#ifdef UF_IMMUTABLE
+		/* Try to turn off the immutable bits. */
+		if (to_sb.st_flags & NOCHANGEBITS)
+			(void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS);
+#endif
+		if (pThis->dobackup) {
+			if (   (size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name, pThis->suffix)
+			    != strlen(to_name) + strlen(pThis->suffix)) {
+				unlink(tempfile);
+				rc = errx(pThis->pCtx, EX_OSERR, "%s: backup filename too long",
+				          to_name);
+				goto l_done;
+			}
+			if (pThis->verbose)
+				kmk_builtin_ctx_printf(pThis->pCtx, 0, "install: %s -> %s\n", to_name, backup);
+			if (rename(to_name, backup) < 0) {
+				serrno = errno;
+				unlink(tempfile);
+				errno = serrno;
+				rc = err(pThis->pCtx, EX_OSERR, "rename: %s to %s", to_name,
+				         backup);
+				goto l_done;
+			}
+		}
+		if (pThis->verbose)
+			kmk_builtin_ctx_printf(pThis->pCtx, 0, "install: %s -> %s\n", from_name, to_name);
+		if (rename(tempfile, to_name) < 0) {
+			serrno = errno;
+			unlink(tempfile);
+			errno = serrno;
+			rc = err(pThis->pCtx, EX_OSERR, "rename: %s to %s", tempfile, to_name);
+			goto l_done;
+		}
+
+		/* Re-open to_fd so we aren't hosed by the rename(2). */
+		(void) close(to_fd);
+		if ((to_fd = open(to_name, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0)) < 0) {
+			rc = err(pThis->pCtx, EX_OSERR, "%s", to_name);
+			goto l_done;
+		}
+	}
+
+	/*
+	 * Preserve the timestamp of the source file if necessary.
+	 */
+	if (pThis->dopreserve && !files_match && !devnull) {
+		tvb[0].tv_sec = from_sb.st_atime;
+		tvb[0].tv_usec = 0;
+		tvb[1].tv_sec = from_sb.st_mtime;
+		tvb[1].tv_usec = 0;
+		(void)utimes(to_name, tvb);
+	}
+
+	if (fstat(to_fd, &to_sb) == -1) {
+		serrno = errno;
+		(void)unlink(to_name);
+		errno = serrno;
+		rc = err(pThis->pCtx, EX_OSERR, "%s", to_name);
+		goto l_done;
+	}
+
+	/*
+	 * Set owner, group, mode for target; do the chown first,
+	 * chown may lose the setuid bits.
+	 */
+#ifdef UF_IMMUTABLE
+	if ((pThis->gid != (gid_t)-1 && pThis->gid != to_sb.st_gid) ||
+	    (pThis->uid != (uid_t)-1 && pThis->uid != to_sb.st_uid) ||
+	    (pThis->mode != (to_sb.st_mode & ALLPERMS))) {
+		/* Try to turn off the immutable bits. */
+		if (to_sb.st_flags & NOCHANGEBITS)
+			(void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
+	}
+#endif
+
+	if ((pThis->gid != (gid_t)-1 && pThis->gid != to_sb.st_gid) ||
+	    (pThis->uid != (uid_t)-1 && pThis->uid != to_sb.st_uid))
+		if (fchown(to_fd, pThis->uid, pThis->gid) == -1) {
+    			if (errno == EPERM && pThis->ignore_perm_errors) {
+				warn(pThis->pCtx, "%s: ignoring chown uid=%d gid=%d failure",
+				     to_name, (int)pThis->uid, (int)pThis->gid);
+			} else {
+				serrno = errno;
+				(void)unlink(to_name);
+				errno = serrno;
+				rc = err(pThis->pCtx, EX_OSERR,"%s: chown/chgrp", to_name);
+				goto l_done;
+			}
+		}
+
+	if (pThis->mode != (to_sb.st_mode & ALLPERMS))
+		if (fchmod(to_fd, pThis->mode)) {
+			serrno = errno;
+			if (serrno == EPERM && pThis->ignore_perm_errors) {
+				fchmod(to_fd, pThis->mode & (ALLPERMS & ~0007000));
+				errno = errno;
+				warn(pThis->pCtx, "%s: ignoring chmod 0%o failure", to_name, (int)(pThis->mode & ALLPERMS));
+			} else  {
+				serrno = errno;
+				(void)unlink(to_name);
+				errno = serrno;
+				rc = err(pThis->pCtx, EX_OSERR, "%s: chmod", to_name);
+				goto l_done;
+			}
+		}
+
+	/*
+	 * If provided a set of flags, set them, otherwise, preserve the
+	 * flags, except for the dump flag.
+	 * NFS does not support flags.  Ignore EOPNOTSUPP flags if we're just
+	 * trying to turn off UF_NODUMP.  If we're trying to set real flags,
+	 * then warn if the the fs doesn't support it, otherwise fail.
+	 */
+#ifdef UF_IMMUTABLE
+	if (   !devnull
+	    && (flags & SETFLAGS || (from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags)
+	    && fchflags(to_fd, flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
+		if (flags & SETFLAGS) {
+			if (errno == EOPNOTSUPP)
+				warn(pThis->pCtx, "%s: chflags", to_name);
+			else {
+				serrno = errno;
+				(void)unlink(to_name);
+				errno = serrno;
+				rc = err(pThis->pCtx, EX_OSERR, "%s: chflags", to_name);
+				goto l_done;
+			}
+		}
+	}
+#endif
+
+l_done:
+	if (to_fd >= 0)
+		(void)close(to_fd);
+	if (temp_fd >= 0)
+		(void)close(temp_fd);
+	if (from_fd >= 0 && !devnull)
+		(void)close(from_fd);
+	return rc;
+}
+
+/*
+ * compare --
+ *	compare two files; non-zero means files differ
+ */
+static int
+compare(int from_fd, size_t from_len, int to_fd, size_t to_len)
+{
+	char buf1[MAXBSIZE];
+	char buf2[MAXBSIZE];
+	int n1, n2;
+	int rv;
+
+	if (from_len != to_len)
+		return 1;
+
+	if (from_len <= MAX_CMP_SIZE) {
+		rv = 0;
+		lseek(from_fd, 0, SEEK_SET);
+		lseek(to_fd, 0, SEEK_SET);
+		while (rv == 0) {
+			n1 = read(from_fd, buf1, sizeof(buf1));
+			if (n1 == 0)
+				break;		/* EOF */
+			else if (n1 > 0) {
+				n2 = read(to_fd, buf2, n1);
+				if (n2 == n1)
+					rv = memcmp(buf1, buf2, n1);
+				else
+					rv = 1;	/* out of sync */
+			} else
+				rv = 1;		/* read failure */
+		}
+		lseek(from_fd, 0, SEEK_SET);
+		lseek(to_fd, 0, SEEK_SET);
+	} else
+		rv = 1;	/* don't bother in this case */
+
+	return rv;
+}
+
+/*
+ * create_tempfile --
+ *	create a temporary file based on path and open it
+ */
+int
+create_tempfile(const char *path, char *temp, size_t tsize)
+{
+	static char s_szTemplate[] = "INS@XXXXXX";
+	const char *p = last_slash(path);
+	if (p) {
+		size_t cchDir = ++p - path;
+		if (cchDir + sizeof(s_szTemplate) <= tsize) {
+			memcpy(temp, path, cchDir);
+			memcpy(&temp[cchDir], s_szTemplate, sizeof(s_szTemplate));
+		} else
+			return EOVERFLOW;
+	} else if (tsize >= sizeof(s_szTemplate))
+		memcpy(temp, s_szTemplate, sizeof(s_szTemplate));
+	else
+		return EOVERFLOW;
+
+	return (mkstemp(temp));
+}
+
+/*
+ * create_newfile --
+ *	create a new file, overwriting an existing one if necessary
+ */
+int
+create_newfile(PINSTALLINSTANCE pThis, const char *path, int target, struct stat *sbp)
+{
+	char backup[MAXPATHLEN];
+	int saved_errno = 0;
+	int newfd;
+
+	if (target) {
+		/*
+		 * Unlink now... avoid ETXTBSY errors later.  Try to turn
+		 * off the append/immutable bits -- if we fail, go ahead,
+		 * it might work.
+		 */
+#ifdef UF_IMMUTABLE
+		if (sbp->st_flags & NOCHANGEBITS)
+			(void)chflags(path, sbp->st_flags & ~NOCHANGEBITS);
+#endif
+
+		if (pThis->dobackup) {
+			if (   (size_t)snprintf(backup, MAXPATHLEN, "%s%s", path, pThis->suffix)
+			    != strlen(path) + strlen(pThis->suffix)) {
+				errx(pThis->pCtx, EX_OSERR, "%s: backup filename too long", path);
+				errno = ENAMETOOLONG;
+				return -1;
+			}
+			(void)snprintf(backup, MAXPATHLEN, "%s%s", path, pThis->suffix);
+			if (pThis->verbose)
+				kmk_builtin_ctx_printf(pThis->pCtx, 0, "install: %s -> %s\n", path, backup);
+			if (rename(path, backup) < 0) {
+				err(pThis->pCtx, EX_OSERR, "rename: %s to %s", path, backup);
+				return -1;
+			}
+		} else
+			if (unlink(path) < 0)
+				saved_errno = errno;
+	}
+
+	newfd = open(path, O_CREAT | O_RDWR | O_TRUNC | O_BINARY | KMK_OPEN_NO_INHERIT, S_IRUSR | S_IWUSR);
+	if (newfd < 0 && saved_errno != 0)
+		errno = saved_errno;
+	return newfd;
+}
+
+/*
+ * Write error handler.
+ */
+static int write_error(PINSTALLINSTANCE pThis, int *ptr_to_fd, const char *to_name, int nw)
+{
+    int serrno = errno;
+    (void)close(*ptr_to_fd);
+    *ptr_to_fd = -1;
+    (void)unlink(to_name);
+    errno = nw > 0 ? EIO : serrno;
+    return err(pThis->pCtx, EX_OSERR, "%s", to_name);
+}
+
+/*
+ * Read error handler.
+ */
+static int read_error(PINSTALLINSTANCE pThis, const char *from_name, int *ptr_to_fd, const char *to_name)
+{
+    int serrno = errno;
+    (void)close(*ptr_to_fd);
+    *ptr_to_fd = -1;
+    (void)unlink(to_name);
+    errno = serrno;
+    return err(pThis->pCtx, EX_OSERR, "%s", from_name);
+}
+
+/*
+ * copy --
+ *	copy from one file to another
+ */
+static int
+copy(PINSTALLINSTANCE pThis, int from_fd, const char *from_name, int *ptr_to_fd, const char *to_name)
+{
+	KBOOL fPendingCr = K_FALSE;
+	KSIZE cchDst;
+	int nr, nw;
+	char buf[MAXBSIZE];
+	int to_fd = *ptr_to_fd;
+
+	/* Rewind file descriptors. */
+	if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
+		return err(pThis->pCtx, EX_OSERR, "lseek: %s", from_name);
+	if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
+		return err(pThis->pCtx, EX_OSERR, "lseek: %s", to_name);
+
+	if (pThis->dos2unix == 0) {
+		/*
+		 * Copy bytes, no conversion.
+		 */
+		while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
+			if ((nw = write(to_fd, buf, nr)) != nr)
+				return write_error(pThis, ptr_to_fd, to_name, nw);
+	} else if (pThis->dos2unix > 0) {
+		/*
+		 * CRLF -> LF is a reduction, so we can work with full buffers.
+		 */
+		while ((nr = read(from_fd, buf, sizeof(buf))) > 0) {
+			if (   fPendingCr
+				&& buf[0] != '\n'
+				&& (nw = write(to_fd, "\r", 1)) != 1)
+				return write_error(pThis, ptr_to_fd, to_name, nw);
+
+			fPendingCr = dos2unix_convert_to_unix(buf, nr, buf, &cchDst);
+
+			nw = write(to_fd, buf, cchDst);
+			if (nw != (int)cchDst)
+				return write_error(pThis, ptr_to_fd, to_name, nw);
+		}
+	} else {
+		/*
+		 * LF -> CRLF is an expansion, so we work with half buffers, reading
+		 * into the upper half of the buffer and expanding into the full buffer.
+		 * The conversion will never expand to more than the double size.
+		 *
+		 * Note! We do not convert valid CRLF line endings.  This gives us
+		 *       valid DOS text, but no round-trip conversion.
+		 */
+		char * const pchSrc = &buf[sizeof(buf) / 2];
+		while ((nr = read(from_fd, pchSrc, sizeof(buf) / 2)) > 0) {
+			if (   fPendingCr
+				&& pchSrc[0] != '\n'
+				&& (nw = write(to_fd, "\r", 1))!= 1)
+				return write_error(pThis, ptr_to_fd, to_name, nw);
+
+			fPendingCr = dos2unix_convert_to_dos(pchSrc, nr, buf, &cchDst);
+
+			nw = write(to_fd, buf, cchDst);
+			if (nw != (int)cchDst)
+				return write_error(pThis, ptr_to_fd, to_name, nw);
+		}
+	}
+
+	/* Check for read error. */
+	if (nr != 0)
+		return read_error(pThis, from_name, ptr_to_fd, to_name);
+
+	/* When converting, we might have a pending final CR to write. */
+	if (   fPendingCr
+	    && (nw = write(to_fd, "\r", 1))!= 1)
+		return write_error(pThis, ptr_to_fd, to_name, nw);
+
+    return EX_OK;
+}
+
+/*
+ * strip --
+ *	use strip(1) to strip the target file
+ */
+static int
+strip(PINSTALLINSTANCE pThis, const char *to_name)
+{
+#if defined(__EMX__) || defined(_MSC_VER)
+	const char *stripbin = getenv("STRIPBIN");
+	if (stripbin == NULL)
+		stripbin = "strip";
+	(void)pThis;
+	return spawnlp(P_WAIT, stripbin, stripbin, to_name, NULL);
+#else
+	const char *stripbin;
+	int serrno, status;
+        pid_t pid;
+
+        pid = fork();
+	switch (pid) {
+	case -1:
+		serrno = errno;
+		(void)unlink(to_name);
+		errno = serrno;
+		return err(pThis->pCtx, EX_TEMPFAIL, "fork");
+	case 0:
+		stripbin = getenv("STRIPBIN");
+		if (stripbin == NULL)
+			stripbin = "strip";
+		execlp(stripbin, stripbin, to_name, (char *)NULL);
+		err(pThis->pCtx, EX_OSERR, "exec(%s)", stripbin);
+                exit(EX_OSERR);
+	default:
+		if (waitpid(pid, &status, 0) == -1 || status) {
+			serrno = errno;
+			(void)unlink(to_name);
+                        errno = serrno;
+			return err(pThis->pCtx, EX_SOFTWARE, "waitpid");
+			/* NOTREACHED */
+		}
+	}
+        return 0;
+#endif
+}
+
+/*
+ * install_dir --
+ *	build directory heirarchy
+ */
+static int
+install_dir(PINSTALLINSTANCE pThis, char *path)
+{
+	char *p;
+	struct stat sb;
+	int ch;
+
+	for (p = path;; ++p)
+		if (   !*p
+		    || (   p != path
+			&& IS_SLASH(*p)
+#if defined(_MSC_VER) /* stat("C:") fails (VC++ v10). Just skip it since it's unnecessary. */
+		        && (p - path != 2 || p[-1] != ':')
+#endif
+		    )) {
+			ch = *p;
+			*p = '\0';
+			if (stat(path, &sb)) {
+				if (errno != ENOENT || mkdir(path, 0755) < 0) {
+					return err(pThis->pCtx, EX_OSERR, "mkdir %s", path);
+					/* NOTREACHED */
+				} else if (pThis->verbose)
+					kmk_builtin_ctx_printf(pThis->pCtx, 0, "install: mkdir %s\n", path);
+			} else if (!S_ISDIR(sb.st_mode))
+				return errx(pThis->pCtx, EX_OSERR, "%s exists but is not a directory", path);
+			if (!(*p = ch))
+				break;
+ 		}
+
+	if ((pThis->gid != (gid_t)-1 || pThis->uid != (uid_t)-1) && chown(path, pThis->uid, pThis->gid))
+		warn(pThis->pCtx, "chown %u:%u %s", pThis->uid, pThis->gid, path);
+	if (chmod(path, pThis->mode))
+		warn(pThis->pCtx, "chmod %o %s", pThis->mode, path);
+	return EX_OK;
+}
+
+/*
+ * usage --
+ *	print a usage message and die
+ */
+static int
+usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+	kmk_builtin_ctx_printf(pCtx, fIsErr,
+"usage: %s [-bCcpSsv] [--[no-]hard-link-files-when-possible]\n"
+"           [--verbose-hard-link-refusal] [--verbose-hard-link-mode-mismatch]\n"
+"           [--[no-]ignore-perm-errors] [-B suffix] [-f flags] [-g group]\n"
+"           [-m mode] [-o owner] [--dos2unix|--unix2dos] file1 file2\n"
+"   or: %s [-bCcpSsv] [--[no-]ignore-perm-errors] [-B suffix] [-f flags]\n"
+"           [-g group] [-m mode] [-o owner] file1 ... fileN directory\n"
+"   or: %s -d [-v] [-g group] [-m mode] [-o owner] directory ...\n"
+"   or: %s --help\n"
+"   or: %s --version\n",
+		pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName,
+		pCtx->pszProgName, pCtx->pszProgName);
+	return EX_USAGE;
+}
+
+/* figures out where the last slash or colon is. */
+static char *
+last_slash(const char *path)
+{
+#if defined(__WIN32__) || defined(__WIN64__) || defined(__OS2__)
+    char *p = (char *)strrchr(path, '/');
+    if (p)
+    {
+        char *p2 = strrchr(p, '\\');
+        if (p2)
+            p = p2;
+    }
+    else
+    {
+        p = (char *)strrchr(path, '\\');
+        if (!p && isalpha(path[0]) && path[1] == ':')
+            p = (char *)&path[1];
+    }
+    return p;
+#else
+    return strrchr(path, '/');
+#endif
+}
+
+/**
+ * Checks if @a pszFilename actually needs dos2unix conversion.
+ *
+ * @returns boolean.
+ * @param	pszFilename		The name of the file to check.
+ */
+static KBOOL needs_dos2unix_conversion(const char *pszFilename)
+{
+	KU32 fStyle = 0;
+	int iErr = dos2unix_analyze_file(pszFilename, &fStyle, NULL, NULL);
+	return iErr != 0
+		|| (fStyle & (DOS2UNIX_STYLE_MASK | DOS2UNIX_F_BINARY)) != DOS2UNIX_STYLE_UNIX;
+}
+
+/**
+ * Checks if @a pszFilename actually needs unix2dos conversion.
+ *
+ * @returns boolean.
+ * @param	pszFilename		The name of the file to check.
+ */
+static KBOOL needs_unix2dos_conversion(const char *pszFilename)
+{
+	KU32 fStyle = 0;
+	int iErr = dos2unix_analyze_file(pszFilename, &fStyle, NULL, NULL);
+	return iErr != 0
+		|| (fStyle & (DOS2UNIX_STYLE_MASK | DOS2UNIX_F_BINARY)) != DOS2UNIX_STYLE_DOS;
+}
+
diff --git a/src/kmk/kmkbuiltin/kDepIDB.c b/src/kmk/kmkbuiltin/kDepIDB.c
new file mode 100644
index 0000000..24cadc1
--- /dev/null
+++ b/src/kmk/kmkbuiltin/kDepIDB.c
@@ -0,0 +1,860 @@
+/* $Id: kDepIDB.c 3315 2020-03-31 01:12:19Z bird $ */
+/** @file
+ * kDepIDB - Extract dependency information from a MS Visual C++ .idb file.
+ */
+
+/*
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+#if !defined(_MSC_VER)
+# include <unistd.h>
+#else
+# include <io.h>
+#endif
+#include "k/kDefs.h"
+#include "k/kTypes.h"
+#include "kDep.h"
+#include "err.h"
+#include "kmkbuiltin.h"
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/*#define DEBUG*/
+#ifdef DEBUG
+# define dprintf(a)             printf a
+# define dump(pb, cb, offBase)  depHexDump(pb,cb,offBase)
+#else
+# define dprintf(a)             do {} while (0)
+# define dump(pb, cb, offBase)  do {} while (0)
+#endif
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct KDEPIDBGLOBALS
+{
+    PKMKBUILTINCTX pCtx;
+    DEPGLOBALS  Core;
+} KDEPIDBGLOBALS;
+typedef KDEPIDBGLOBALS *PKDEPIDBGLOBALS;
+
+
+/**
+ * Scans a stream (chunk of data really) for dependencies.
+ *
+ * @returns 0 on success.
+ * @returns !0 on failure.
+ * @param   pThis           The kDepIDB instance.
+ * @param   pbStream        The stream bits.
+ * @param   cbStream        The size of the stream.
+ * @param   pszPrefix       The dependency prefix.
+ * @param   cchPrefix       The size of the prefix.
+ */
+static int ScanStream(PKDEPIDBGLOBALS pThis, KU8 *pbStream, size_t cbStream, const char *pszPrefix, size_t cchPrefix)
+{
+    const KU8      *pbCur = pbStream;
+    size_t          cbLeft = cbStream;
+    register char   chFirst = *pszPrefix;
+    while (cbLeft > cchPrefix + 2)
+    {
+        if (    *pbCur != chFirst
+            ||  memcmp(pbCur, pszPrefix, cchPrefix))
+        {
+            pbCur++;
+            cbLeft--;
+        }
+        else
+        {
+            size_t cchDep;
+            pbCur += cchPrefix;
+            cchDep = strlen((const char *)pbCur);
+            depAdd(&pThis->Core, (const char *) pbCur, cchDep);
+            dprintf(("%05x: '%s'\n", pbCur - pbStream, pbCur));
+
+            pbCur += cchDep;
+            cbLeft -= cchDep + cchPrefix;
+        }
+    }
+
+    return 0;
+}
+
+
+/*/////////////////////////////////////////////////////////////////////////////
+//
+//
+//  P D B   7 . 0
+//
+//
+/////////////////////////////////////////////////////////////////////////////*/
+
+/** A PDB 7.0 Page number. */
+typedef KU32 PDB70PAGE;
+/** Pointer to a PDB 7.0 Page number. */
+typedef PDB70PAGE *PPDB70PAGE;
+
+/**
+ * A PDB 7.0 stream.
+ */
+typedef struct PDB70STREAM
+{
+    /** The size of the stream. */
+    KU32        cbStream;
+} PDB70STREAM, *PPDB70STREAM;
+
+
+/** The PDB 7.00 signature. */
+#define PDB_SIGNATURE_700 "Microsoft C/C++ MSF 7.00\r\n\x1A" "DS\0\0"
+/**
+ * The PDB 7.0 header.
+ */
+typedef struct PDB70HDR
+{
+    /** The signature string. */
+    KU8         szSignature[sizeof(PDB_SIGNATURE_700)];
+    /** The page size. */
+    KU32        cbPage;
+    /** The start page. */
+    PDB70PAGE   iStartPage;
+    /** The number of pages in the file. */
+    PDB70PAGE   cPages;
+    /** The root stream directory. */
+    KU32        cbRoot;
+    /** Unknown function, always 0. */
+    KU32        u32Reserved;
+    /** The page index of the root page table. */
+    PDB70PAGE   iRootPages;
+} PDB70HDR, *PPDB70HDR;
+
+/**
+ * The PDB 7.0 root directory.
+ */
+typedef struct PDB70ROOT
+{
+    /** The number of streams */
+    KU32        cStreams;
+    /** Array of streams. */
+    PDB70STREAM aStreams[1];
+    /* KU32 aiPages[] */
+} PDB70ROOT, *PPDB70ROOT;
+
+/**
+ * The PDB 7.0 name stream (#1) header.
+ */
+typedef struct PDB70NAMES
+{
+    /** The structure version. */
+    KU32            Version;
+    /** Timestamp.  */
+    KU32            TimeStamp;
+    /** Unknown. */
+    KU32            Unknown1;
+    /** GUID. */
+    KU32            u32Guid[4];
+    /** The size of the following name table. */
+    KU32            cbNames;
+    /** The name table. */
+    char            szzNames[1];
+} PDB70NAMES, *PPDB70NAMES;
+
+/** The version / magic of the names structure. */
+#define PDB70NAMES_VERSION  20000404
+
+
+static int Pdb70ValidateHeader(PKDEPIDBGLOBALS pThis, PPDB70HDR pHdr, size_t cbFile)
+{
+    if (pHdr->cbPage * pHdr->cPages != cbFile)
+        return errx(pThis->pCtx, 1, "Bad PDB 2.0 header - cbPage * cPages != cbFile.");
+    if (pHdr->iStartPage >= pHdr->cPages && pHdr->iStartPage <= 0)
+        return errx(pThis->pCtx, 1, "Bad PDB 2.0 header - iStartPage=%u cPages=%u.",
+                    pHdr->iStartPage, pHdr->cPages);
+    if (pHdr->iRootPages >= pHdr->cPages && pHdr->iRootPages <= 0)
+        return errx(pThis->pCtx, 1, "Bad PDB 2.0 header - iRootPages=%u cPage=%u.",
+                    pHdr->iStartPage, pHdr->cPages);
+    return 0;
+}
+
+#ifdef DEBUG
+static size_t Pdb70Align(PPDB70HDR pHdr, size_t cb)
+{
+    if (cb == ~(KU32)0 || !cb)
+        return 0;
+    return ((cb + pHdr->cbPage - 1) / pHdr->cbPage) * pHdr->cbPage;
+}
+#endif /* DEBUG */
+
+static size_t Pdb70Pages(PPDB70HDR pHdr, size_t cb)
+{
+    if (cb == ~(KU32)0 || !cb)
+        return 0;
+    return (cb + pHdr->cbPage - 1) / pHdr->cbPage;
+}
+
+static void *Pdb70AllocAndRead(PKDEPIDBGLOBALS pThis, PPDB70HDR pHdr, size_t cb, PPDB70PAGE paiPageMap)
+{
+    const size_t    cbPage = pHdr->cbPage;
+    size_t          cPages = Pdb70Pages(pHdr, cb);
+    KU8            *pbBuf = malloc(cPages * cbPage + 1);
+    if (pbBuf)
+    {
+        size_t iPage = 0;
+        while (iPage < cPages)
+        {
+            size_t off = paiPageMap[iPage];
+            if (off < pHdr->cPages)
+            {
+                off *= cbPage;
+                memcpy(pbBuf + iPage * cbPage, (KU8 *)pHdr + off, cbPage);
+                dump(pbBuf + iPage * cbPage, iPage + 1 < cPages ? cbPage : cb % cbPage, off);
+            }
+            else
+            {
+                warnx(pThis->pCtx, "warning: Invalid page index %u (max %u)!\n", (unsigned)off, pHdr->cPages);
+                memset(pbBuf + iPage * cbPage, 0, cbPage);
+            }
+
+            iPage++;
+        }
+        pbBuf[cPages * cbPage] = '\0';
+    }
+    else
+    {
+        errx(pThis->pCtx, 1, "failed to allocate %lu bytes", (unsigned long)(cPages * cbPage + 1));
+        return NULL;
+    }
+    return pbBuf;
+}
+
+static PPDB70ROOT Pdb70AllocAndReadRoot(PKDEPIDBGLOBALS pThis, PPDB70HDR pHdr)
+{
+    /*
+     * The tricky bit here is to find the right length. Really?
+     * (Todo: Check if we can just use the stream #0 size..)
+     */
+    PPDB70PAGE piPageMap = (KU32 *)((KU8 *)pHdr + pHdr->iRootPages * pHdr->cbPage);
+    PPDB70ROOT pRoot = Pdb70AllocAndRead(pThis, pHdr, pHdr->cbRoot, piPageMap);
+    if (pRoot)
+    {
+#if 1
+        /* This stuff is probably unnecessary: */
+        /* size = stream header + array of stream. */
+        size_t cb = K_OFFSETOF(PDB70ROOT, aStreams[pRoot->cStreams]);
+        free(pRoot);
+        pRoot = Pdb70AllocAndRead(pThis, pHdr, cb, piPageMap);
+        if (pRoot)
+        {
+            /* size += page tables. */
+            unsigned iStream = pRoot->cStreams;
+            while (iStream-- > 0)
+                if (pRoot->aStreams[iStream].cbStream != ~(KU32)0)
+                    cb += Pdb70Pages(pHdr, pRoot->aStreams[iStream].cbStream) * sizeof(PDB70PAGE);
+            free(pRoot);
+            pRoot = Pdb70AllocAndRead(pThis, pHdr, cb, piPageMap);
+            if (pRoot)
+            {
+                /* validate? */
+                return pRoot;
+            }
+        }
+#else
+        /* validate? */
+        return pRoot;
+#endif
+    }
+    return NULL;
+}
+
+static void *Pdb70AllocAndReadStream(PKDEPIDBGLOBALS pThis, PPDB70HDR pHdr, PPDB70ROOT pRoot, unsigned iStream, size_t *pcbStream)
+{
+    const size_t    cbStream = pRoot->aStreams[iStream].cbStream;
+    PPDB70PAGE      paiPageMap;
+    if (    iStream >= pRoot->cStreams
+        ||  cbStream == ~(KU32)0)
+    {
+        errx(pThis->pCtx, 1, "Invalid stream %d", iStream);
+        return NULL;
+    }
+
+    paiPageMap = (PPDB70PAGE)&pRoot->aStreams[pRoot->cStreams];
+    while (iStream-- > 0)
+        if (pRoot->aStreams[iStream].cbStream != ~(KU32)0)
+            paiPageMap += Pdb70Pages(pHdr, pRoot->aStreams[iStream].cbStream);
+
+    if (pcbStream)
+        *pcbStream = cbStream;
+    return Pdb70AllocAndRead(pThis, pHdr, cbStream, paiPageMap);
+}
+
+static int Pdb70Process(PKDEPIDBGLOBALS pThis, KU8 *pbFile, size_t cbFile)
+{
+    PPDB70HDR   pHdr = (PPDB70HDR)pbFile;
+    PPDB70ROOT  pRoot;
+    PPDB70NAMES pNames;
+    size_t      cbStream = 0;
+    unsigned    fDone = 0;
+    unsigned    iStream;
+    int         rc = 0;
+    dprintf(("pdb70\n"));
+
+    /*
+     * Validate the header and read the root stream.
+     */
+    if (Pdb70ValidateHeader(pThis, pHdr, cbFile))
+        return 1;
+    pRoot = Pdb70AllocAndReadRoot(pThis, pHdr);
+    if (!pRoot)
+        return 1;
+
+    /*
+     * The names we want are usually all found in the 'Names' stream, that is #1.
+     */
+    dprintf(("Reading the names stream....\n"));
+    pNames = Pdb70AllocAndReadStream(pThis, pHdr, pRoot, 1, &cbStream);
+    if (pNames)
+    {
+        dprintf(("Names: Version=%u cbNames=%u (%#x)\n", pNames->Version, pNames->cbNames, pNames->cbNames));
+        if (    pNames->Version == PDB70NAMES_VERSION
+            &&  pNames->cbNames > 32
+            &&  pNames->cbNames + K_OFFSETOF(PDB70NAMES, szzNames) <= pRoot->aStreams[1].cbStream)
+        {
+            /*
+             * Iterate the names and add the /mr/inversedeps/ ones to the dependency list.
+             */
+            const char *psz = &pNames->szzNames[0];
+            size_t cb = pNames->cbNames;
+            size_t off = 0;
+            dprintf(("0x0000 #0: %6d bytes  [root / toc]\n", pRoot->aStreams[0].cbStream));
+            for (iStream = 1; cb > 0; iStream++)
+            {
+                int fAdded = 0;
+                size_t cch = strlen(psz);
+                if (   cch >= sizeof("/mr/inversedeps/")
+                    && !memcmp(psz, "/mr/inversedeps/", sizeof("/mr/inversedeps/") - 1))
+                {
+                    depAdd(&pThis->Core, psz + sizeof("/mr/inversedeps/") - 1, cch - (sizeof("/mr/inversedeps/") - 1));
+                    fAdded = 1;
+                }
+                dprintf(("%#06x #%d: %6d bytes  %s%s\n", off, iStream,
+                         iStream < pRoot->cStreams ? pRoot->aStreams[iStream].cbStream : -1,
+                         psz, fAdded ? "  [dep]" : ""));
+                (void)fAdded;
+
+                /* next */
+                if (cch >= cb)
+                {
+                    dprintf(("warning! cch=%d cb=%d\n", cch, cb));
+                    cch = cb - 1;
+                }
+                cb  -= cch + 1;
+                psz += cch + 1;
+                off += cch + 1;
+            }
+            rc = 0;
+            fDone = 1;
+        }
+        else
+            dprintf(("Unknown version or bad size: Version=%u cbNames=%d cbStream=%d\n",
+                     pNames->Version, pNames->cbNames, cbStream));
+        free(pNames);
+    }
+
+    if (!fDone)
+    {
+        /*
+         * Iterate the streams in the root and scan their content for
+         * dependencies.
+         */
+        rc = 0;
+        for (iStream = 0; iStream < pRoot->cStreams && !rc; iStream++)
+        {
+            KU8 *pbStream;
+            if (    pRoot->aStreams[iStream].cbStream == ~(KU32)0
+                ||  !pRoot->aStreams[iStream].cbStream)
+                continue;
+            dprintf(("Stream #%d: %#x bytes (%#x aligned)\n", iStream, pRoot->aStreams[iStream].cbStream,
+                     Pdb70Align(pHdr, pRoot->aStreams[iStream].cbStream)));
+            pbStream = (KU8 *)Pdb70AllocAndReadStream(pThis, pHdr, pRoot, iStream, &cbStream);
+            if (pbStream)
+            {
+                rc = ScanStream(pThis, pbStream, cbStream, "/mr/inversedeps/", sizeof("/mr/inversedeps/") - 1);
+                free(pbStream);
+            }
+            else
+                rc = 1;
+        }
+    }
+
+    free(pRoot);
+    return rc;
+}
+
+
+
+/*/////////////////////////////////////////////////////////////////////////////
+//
+//
+//  P D B   2 . 0
+//
+//
+/////////////////////////////////////////////////////////////////////////////*/
+
+
+/** A PDB 2.0 Page number. */
+typedef KU16 PDB20PAGE;
+/** Pointer to a PDB 2.0 Page number. */
+typedef PDB20PAGE *PPDB20PAGE;
+
+/**
+ * A PDB 2.0 stream.
+ */
+typedef struct PDB20STREAM
+{
+    /** The size of the stream. */
+    KU32        cbStream;
+    /** Some unknown value. */
+    KU32        u32Unknown;
+} PDB20STREAM, *PPDB20STREAM;
+
+/** The PDB 2.00 signature. */
+#define PDB_SIGNATURE_200 "Microsoft C/C++ program database 2.00\r\n\x1A" "JG\0"
+/**
+ * The PDB 2.0 header.
+ */
+typedef struct PDB20HDR
+{
+    /** The signature string. */
+    KU8         szSignature[sizeof(PDB_SIGNATURE_200)];
+    /** The page size. */
+    KU32        cbPage;
+    /** The start page - whatever that is... */
+    PDB20PAGE   iStartPage;
+    /** The number of pages in the file. */
+    PDB20PAGE   cPages;
+    /** The root stream directory. */
+    PDB20STREAM RootStream;
+    /** The root page table. */
+    PDB20PAGE   aiRootPageMap[1];
+} PDB20HDR, *PPDB20HDR;
+
+/**
+ * The PDB 2.0 root directory.
+ */
+typedef struct PDB20ROOT
+{
+    /** The number of streams */
+    KU16        cStreams;
+    /** Reserved or high part of cStreams. */
+    KU16        u16Reserved;
+    /** Array of streams. */
+    PDB20STREAM aStreams[1];
+} PDB20ROOT, *PPDB20ROOT;
+
+
+static int Pdb20ValidateHeader(PKDEPIDBGLOBALS pThis, PPDB20HDR pHdr, size_t cbFile)
+{
+    if (pHdr->cbPage * pHdr->cPages != cbFile)
+        return errx(pThis->pCtx, 1, "Bad PDB 2.0 header - cbPage * cPages != cbFile.");
+    if (pHdr->iStartPage >= pHdr->cPages && pHdr->iStartPage <= 0)
+        return errx(pThis->pCtx, 1, "Bad PDB 2.0 header - cbPage * cPages != cbFile.");
+    return 0;
+}
+
+static size_t Pdb20Pages(PPDB20HDR pHdr, size_t cb)
+{
+    if (cb == ~(KU32)0 || !cb)
+        return 0;
+    return (cb + pHdr->cbPage - 1) / pHdr->cbPage;
+}
+
+static void *Pdb20AllocAndRead(PKDEPIDBGLOBALS pThis, PPDB20HDR pHdr, size_t cb, PPDB20PAGE paiPageMap)
+{
+    size_t cPages = Pdb20Pages(pHdr, cb);
+    KU8   *pbBuf = malloc(cPages * pHdr->cbPage + 1);
+    if (pbBuf)
+    {
+        size_t iPage = 0;
+        while (iPage < cPages)
+        {
+            size_t off = paiPageMap[iPage];
+            off *= pHdr->cbPage;
+            memcpy(pbBuf + iPage * pHdr->cbPage, (KU8 *)pHdr + off, pHdr->cbPage);
+            iPage++;
+        }
+        pbBuf[cPages * pHdr->cbPage] = '\0';
+    }
+    else
+        errx(pThis->pCtx, 1, "failed to allocate %lu bytes", (unsigned long)(cPages * pHdr->cbPage + 1));
+    return pbBuf;
+}
+
+static PPDB20ROOT Pdb20AllocAndReadRoot(PKDEPIDBGLOBALS pThis, PPDB20HDR pHdr)
+{
+    /*
+     * The tricky bit here is to find the right length.
+     * (Todo: Check if we can just use the stream size..)
+     */
+    PPDB20ROOT pRoot = Pdb20AllocAndRead(pThis, pHdr, sizeof(*pRoot), &pHdr->aiRootPageMap[0]);
+    if (pRoot)
+    {
+        /* size = stream header + array of stream. */
+        size_t cb = K_OFFSETOF(PDB20ROOT, aStreams[pRoot->cStreams]);
+        free(pRoot);
+        pRoot = Pdb20AllocAndRead(pThis, pHdr, cb, &pHdr->aiRootPageMap[0]);
+        if (pRoot)
+        {
+            /* size += page tables. */
+            unsigned iStream = pRoot->cStreams;
+            while (iStream-- > 0)
+                if (pRoot->aStreams[iStream].cbStream != ~(KU32)0)
+                    cb += Pdb20Pages(pHdr, pRoot->aStreams[iStream].cbStream) * sizeof(PDB20PAGE);
+            free(pRoot);
+            pRoot = Pdb20AllocAndRead(pThis, pHdr, cb, &pHdr->aiRootPageMap[0]);
+            if (pRoot)
+            {
+                /* validate? */
+                return pRoot;
+            }
+        }
+    }
+    return NULL;
+
+}
+
+static void *Pdb20AllocAndReadStream(PKDEPIDBGLOBALS pThis, PPDB20HDR pHdr, PPDB20ROOT pRoot, unsigned iStream, size_t *pcbStream)
+{
+    size_t      cbStream = pRoot->aStreams[iStream].cbStream;
+    PPDB20PAGE  paiPageMap;
+    if (    iStream >= pRoot->cStreams
+        ||  cbStream == ~(KU32)0)
+    {
+        errx(pThis->pCtx, 1, "Invalid stream %d", iStream);
+        return NULL;
+    }
+
+    paiPageMap = (PPDB20PAGE)&pRoot->aStreams[pRoot->cStreams];
+    while (iStream-- > 0)
+        if (pRoot->aStreams[iStream].cbStream != ~(KU32)0)
+            paiPageMap += Pdb20Pages(pHdr, pRoot->aStreams[iStream].cbStream);
+
+    if (pcbStream)
+        *pcbStream = cbStream;
+    return Pdb20AllocAndRead(pThis, pHdr, cbStream, paiPageMap);
+}
+
+static int Pdb20Process(PKDEPIDBGLOBALS pThis, KU8 *pbFile, size_t cbFile)
+{
+    PPDB20HDR   pHdr = (PPDB20HDR)pbFile;
+    PPDB20ROOT  pRoot;
+    unsigned    iStream;
+    int         rc = 0;
+
+    /*
+     * Validate the header and read the root stream.
+     */
+    if (Pdb20ValidateHeader(pThis, pHdr, cbFile))
+        return 1;
+    pRoot = Pdb20AllocAndReadRoot(pThis, pHdr);
+    if (!pRoot)
+        return 1;
+
+    /*
+     * Iterate the streams in the root and scan their content for
+     * dependencies.
+     */
+    rc = 0;
+    for (iStream = 0; iStream < pRoot->cStreams && !rc; iStream++)
+    {
+        KU8 *pbStream;
+        if (pRoot->aStreams[iStream].cbStream == ~(KU32)0)
+            continue;
+        pbStream = (KU8 *)Pdb20AllocAndReadStream(pThis, pHdr, pRoot, iStream, NULL);
+        if (pbStream)
+        {
+            rc = ScanStream(pThis, pbStream, pRoot->aStreams[iStream].cbStream, "/ipm/header/", sizeof("/ipm/header/") - 1);
+            free(pbStream);
+        }
+        else
+            rc = 1;
+    }
+
+    free(pRoot);
+    return rc;
+}
+
+
+/**
+ * Make an attempt at parsing a Visual C++ IDB file.
+ */
+static int ProcessIDB(PKDEPIDBGLOBALS pThis, FILE *pInput)
+{
+    size_t      cbFile;
+    KU8        *pbFile;
+    void       *pvOpaque;
+    int         rc = 0;
+
+    /*
+     * Read the file into memory.
+     */
+    pbFile = (KU8 *)depReadFileIntoMemory(pInput, &cbFile, &pvOpaque);
+    if (!pbFile)
+        return 1;
+
+    /*
+     * Figure out which parser to use.
+     */
+    if (!memcmp(pbFile, PDB_SIGNATURE_700, sizeof(PDB_SIGNATURE_700)))
+        rc = Pdb70Process(pThis, pbFile, cbFile);
+    else if (!memcmp(pbFile, PDB_SIGNATURE_200, sizeof(PDB_SIGNATURE_200)))
+        rc = Pdb20Process(pThis, pbFile, cbFile);
+    else
+        rc = errx(pThis->pCtx, 1, "Doesn't recognize the header of the Visual C++ IDB file.");
+
+    depFreeFileMemory(pbFile, pvOpaque);
+    return rc;
+}
+
+
+static void kDepIDBUsage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+    kmk_builtin_ctx_printf(pCtx, fIsErr,
+                           "usage: %s -o <output> -t <target> [-fqs] <vc idb-file>\n"
+                           "   or: %s --help\n"
+                           "   or: %s --version\n",
+                           pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName);
+}
+
+
+int kmk_builtin_kDepIDB(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+    int             i;
+    KDEPIDBGLOBALS  This;
+
+    /* Arguments. */
+    FILE       *pOutput = NULL;
+    const char *pszOutput = NULL;
+    FILE       *pInput = NULL;
+    const char *pszTarget = NULL;
+    int         fStubs = 0;
+    int         fFixCase = 0;
+    /* Argument parsing. */
+    int         fInput = 0;             /* set when we've found input argument. */
+    int         fQuiet = 0;
+
+    /* Init the instance data. */
+    This.pCtx = pCtx;
+
+    /*
+     * Parse arguments.
+     */
+    if (argc <= 1)
+    {
+        kDepIDBUsage(pCtx, 0);
+        return 1;
+    }
+    for (i = 1; i < argc; i++)
+    {
+        if (argv[i][0] == '-')
+        {
+            const char *psz = &argv[i][1];
+            if (*psz == '-')
+            {
+                if (!strcmp(psz, "-quiet"))
+                    psz = "q";
+                else if (!strcmp(psz, "-help"))
+                    psz = "?";
+                else if (!strcmp(psz, "-version"))
+                    psz = "V";
+            }
+
+            switch (*psz)
+            {
+                /*
+                 * Output file.
+                 */
+                case 'o':
+                {
+                    pszOutput = &argv[i][2];
+                    if (pOutput)
+                        return errx(pCtx, 2, "only one output file!");
+                    if (!*pszOutput)
+                    {
+                        if (++i >= argc)
+                            return errx(pCtx, 2, "The '-o' argument is missing the filename.");
+                        pszOutput = argv[i];
+                    }
+                    if (pszOutput[0] == '-' && !pszOutput[1])
+                        pOutput = stdout;
+                    else
+                        pOutput = fopen(pszOutput, "w" KMK_FOPEN_NO_INHERIT_MODE);
+                    if (!pOutput)
+                        return err(pCtx, 1, "Failed to create output file '%s'", pszOutput);
+                    break;
+                }
+
+                /*
+                 * Target name.
+                 */
+                case 't':
+                {
+                    if (pszTarget)
+                        return errx(pCtx, 2, "only one target!");
+                    pszTarget = &argv[i][2];
+                    if (!*pszTarget)
+                    {
+                        if (++i >= argc)
+                            return errx(pCtx, 2, "The '-t' argument is missing the target name.");
+                        pszTarget = argv[i];
+                    }
+                    break;
+                }
+
+                /*
+                 * Fix case.
+                 */
+                case 'f':
+                {
+                    fFixCase = 1;
+                    break;
+                }
+
+                /*
+                 * Quiet.
+                 */
+                case 'q':
+                {
+                    fQuiet = 1;
+                    break;
+                }
+
+                /*
+                 * Generate stubs.
+                 */
+                case 's':
+                {
+                    fStubs = 1;
+                    break;
+                }
+
+                /*
+                 * The mandatory version & help.
+                 */
+                case '?':
+                    kDepIDBUsage(pCtx, 0);
+                    return 0;
+                case 'V':
+                case 'v':
+                    return kbuild_version(pCtx->pszProgName);
+
+                /*
+                 * Invalid argument.
+                 */
+                default:
+                    errx(pCtx, 2, "Invalid argument '%s.'", argv[i]);
+                    kDepIDBUsage(pCtx, 1);
+                    return 2;
+            }
+        }
+        else
+        {
+            pInput = fopen(argv[i], "rb" KMK_FOPEN_NO_INHERIT_MODE);
+            if (!pInput)
+                return err(pCtx, 1, "Failed to open input file '%s'", argv[i]);
+            fInput = 1;
+        }
+
+        /*
+         * End of the line?
+         */
+        if (fInput)
+        {
+            if (++i < argc)
+                return errx(pCtx, 2, "No arguments shall follow the input spec.");
+            break;
+        }
+    }
+
+    /*
+     * Got all we require?
+     */
+    if (!pInput)
+        return errx(pCtx, 2, "No input!");
+    if (!pOutput)
+        return errx(pCtx, 2, "No output!");
+    if (!pszTarget)
+        return errx(pCtx, 2, "No target!");
+
+    /*
+     * Do the parsing.
+     */
+    depInit(&This.Core);
+    i = ProcessIDB(&This, pInput);
+    fclose(pInput);
+
+    /*
+     * Write the dependecy file.
+     */
+    if (!i)
+    {
+        depOptimize(&This.Core, fFixCase, fQuiet, NULL /*pszIgnoredExt*/);
+        depPrintTargetWithDeps(&This.Core, pOutput, pszTarget, 1 /*fEscapeTarget*/);
+        if (fStubs)
+            depPrintStubs(&This.Core, pOutput);
+    }
+
+    /*
+     * Close the output, delete output on failure.
+     */
+    if (!i && ferror(pOutput))
+        i = errx(pCtx, 1, "Error writing to '%s'.", pszOutput);
+    fclose(pOutput);
+    if (i)
+    {
+        if (unlink(pszOutput))
+            warnx(pCtx, "warning: failed to remove output file '%s' on failure.", pszOutput);
+    }
+
+    depCleanup(&This.Core);
+    return i;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_kDepIDB", NULL };
+    return kmk_builtin_kDepIDB(argc, argv, envp, &Ctx);
+}
+#endif
+
diff --git a/src/kmk/kmkbuiltin/kDepObj.c b/src/kmk/kmkbuiltin/kDepObj.c
new file mode 100644
index 0000000..280f15f
--- /dev/null
+++ b/src/kmk/kmkbuiltin/kDepObj.c
@@ -0,0 +1,1250 @@
+/* $Id: kDepObj.c 3364 2020-06-08 19:29:42Z bird $ */
+/** @file
+ * kDepObj - Extract dependency information from an object file.
+ */
+
+/*
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#define MSCFAKES_NO_WINDOWS_H
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+#include <stdarg.h>
+#if !defined(_MSC_VER)
+# include <unistd.h>
+#else
+# include <io.h>
+typedef intptr_t ssize_t;
+#endif
+#include "k/kDefs.h"
+#include "k/kTypes.h"
+#include "k/kLdrFmts/pe.h"
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include "kDep.h"
+#include "err.h"
+#include "kmkbuiltin.h"
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+#if 0
+# define dprintf(a)             printf a
+# define dump(pb, cb, offBase)  depHexDump(pb,cb,offBase)
+# define WITH_DPRINTF
+#else
+# define dprintf(a)             do {} while (0)
+# define dump(pb, cb, offBase)  do {} while (0)
+# undef  WITH_DPRINTF
+#endif
+
+/** @name OMF defines
+ * @{ */
+#define KDEPOMF_THEADR          0x80
+#define KDEPOMF_LHEADR          0x82
+#define KDEPOMF_COMENT          0x88
+#define KDEPOMF_CMTCLS_DEPENDENCY   0xe9
+#define KDEPOMF_CMTCLS_DBGTYPE      0xa1
+#define KDEPOMF_LINNUM          0x94
+#define KDEPOMF_LINNUM32        0x95
+/** @} */
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/** @name OMF Structures
+ * @{ */
+#pragma pack(1)
+/** OMF record header. */
+typedef struct KDEPOMFHDR
+{
+    /** The record type. */
+    KU8     bType;
+    /** The size of the record, excluding this header. */
+    KU16    cbRec;
+} KDEPOMFHDR;
+typedef KDEPOMFHDR *PKDEPOMFHDR;
+typedef const KDEPOMFHDR *PCKDEPOMFHDR;
+
+/** OMF string. */
+typedef struct KDEPOMFSTR
+{
+    KU8     cch;
+    char    ach[1];
+} KDEPOMFSTR;
+typedef KDEPOMFSTR *PKDEPOMFSTR;
+typedef const KDEPOMFSTR *PCKDEPOMFSTR;
+
+/** THEADR/LHEADR. */
+typedef struct KDEPOMFTHEADR
+{
+    KDEPOMFHDR  Hdr;
+    KDEPOMFSTR  Name;
+} KDEPOMFTHEADR;
+typedef KDEPOMFTHEADR *PKDEPOMFTHEADR;
+typedef const KDEPOMFTHEADR *PCKDEPOMFTHEADR;
+
+/** Dependency File. */
+typedef struct KDEPOMFDEPFILE
+{
+    KDEPOMFHDR  Hdr;
+    KU8         fType;
+    KU8         bClass;
+    KU16        wDosTime;
+    KU16        wDosDate;
+    KDEPOMFSTR  Name;
+} KDEPOMFDEPFILE;
+typedef KDEPOMFDEPFILE *PKDEPOMFDEPFILE;
+typedef const KDEPOMFDEPFILE *PCKDEPOMFDEPFILE;
+
+#pragma pack()
+/** @} */
+
+
+/** @name COFF Structures
+ * @{ */
+#pragma pack(1)
+
+typedef struct KDEPCVSYMHDR
+{
+    /** The record size minus the size field. */
+    KU16        cb;
+    /** The record type. */
+    KU16        uType;
+} KDEPCVSYMHDR;
+typedef KDEPCVSYMHDR *PKDEPCVSYMHDR;
+typedef const KDEPCVSYMHDR *PCKDEPCVSYMHDR;
+
+/** @name Selection of KDEPCVSYMHDR::uType values.
+ * @{ */
+#define K_CV8_S_MSTOOL      KU16_C(0x1116)
+/** @} */
+
+typedef struct KDEPCV8SYMHDR
+{
+    /** The record type. */
+    KU32        uType;
+    /** The record size minus the size field. */
+    KU32        cb;
+} KDEPCV8SYMHDR;
+typedef KDEPCV8SYMHDR *PKDEPCV8SYMHDR;
+typedef const KDEPCV8SYMHDR *PCKDEPCV8SYMHDR;
+
+/** @name Known KDEPCV8SYMHDR::uType Values.
+ * @{ */
+#define K_CV8_SYMBOL_INFO   KU32_C(0x000000f1)
+#define K_CV8_LINE_NUMBERS  KU32_C(0x000000f2)
+#define K_CV8_STRING_TABLE  KU32_C(0x000000f3)
+#define K_CV8_SOURCE_FILES  KU32_C(0x000000f4)
+#define K_CV8_COMDAT_XXXXX  KU32_C(0x000000f5) /**< no idea about the format... */
+/** @} */
+
+#pragma pack()
+/** @} */
+
+/**
+ * Globals.
+ */
+typedef struct KDEPOBJGLOBALS
+{
+    /** The command execution context. */
+    PKMKBUILTINCTX pCtx;
+    /** Core instance. */
+    DEPGLOBALS Core;
+    /** The file.    */
+    const char *pszFile;
+} KDEPOBJGLOBALS;
+/** Pointer to kDepObj globals. */
+typedef KDEPOBJGLOBALS *PKDEPOBJGLOBALS;
+
+
+
+/**
+ * Prints an error message.
+ *
+ * @returns rc.
+ * @param   pThis       kObjDep instance data.
+ * @param   rc          The return code, for making one line return statements.
+ * @param   pszFormat   The message format string.
+ * @param   ...         Format arguments.
+ * @todo    Promote this to kDep.c.
+ */
+static int kDepErr(PKDEPOBJGLOBALS pThis, int rc, const char *pszFormat, ...)
+{
+    char szMsg[2048];
+    va_list va;
+    va_start(va, pszFormat);
+    vsnprintf(szMsg, sizeof(szMsg) - 1, pszFormat, va);
+    va_end(va);
+    szMsg[sizeof(szMsg) - 1] = '\0';
+
+    if (pThis->pszFile)
+        warnx(pThis->pCtx, "%s: error: %s", pThis->pszFile, szMsg);
+    else
+        errx(pThis->pCtx, rc, "%s", szMsg);
+    return rc;
+}
+
+
+/**
+ * Gets an index from the data.
+ *
+ * @returns The index, KU16_MAX on buffer underflow.
+ * @param   puData      The current data stream position (in/out).
+ * @param   pcbLeft     Number of bytes left (in/out).
+ */
+static KU16 kDepObjOMFGetIndex(KPCUINT *puData, KU16 *pcbLeft)
+{
+    KU16 u16;
+
+    if (*pcbLeft >= 1 && *pcbLeft != KU16_MAX)
+    {
+        *pcbLeft -= 1;
+        u16 = *puData->pb++;
+        if (u16 & KU16_C(0x80))
+        {
+            if (*pcbLeft >= 1)
+            {
+                *pcbLeft -= 1;
+                u16 = ((u16 & KU16_C(0x7f)) << 8) | *puData->pb++;
+            }
+            else
+                u16 = KU16_MAX;
+        }
+    }
+    else
+        u16 = KU16_MAX;
+    return u16;
+}
+
+
+/**
+ * Parses the OMF file.
+ *
+ * @returns 0 on success, 1 on failure, 2 if no dependencies was found.
+ * @param   pThis       The kDepObj instance data.
+ * @param   pbFile      The start of the file.
+ * @param   cbFile      The file size.
+ */
+int kDepObjOMFParse(PKDEPOBJGLOBALS pThis, const KU8 *pbFile, KSIZE cbFile)
+{
+    PCKDEPOMFHDR    pHdr        = (PCKDEPOMFHDR)pbFile;
+    KSIZE           cbLeft      = cbFile;
+    char            uDbgType    = 0; /* H or C */
+    KU8             uDbgVer     = KU8_MAX;
+    KU32            iSrc        = 0;
+    KU32            iMaybeSrc   = 0;
+    KU8             uLinNumType = KU8_MAX;
+    KU16            cLinNums    = 0;
+    KU32            cLinFiles   = 0;
+    KU32            iLinFile    = 0;
+
+    /*
+     * Iterate thru the records until we hit the end or an invalid one.
+     */
+    while (   cbLeft >= sizeof(*pHdr)
+           && cbLeft >= pHdr->cbRec + sizeof(*pHdr))
+    {
+        KPCUINT     uData;
+        uData.pv = pHdr + 1;
+
+        /* process selected record types. */
+        dprintf(("%#07" KUPTR_PRI ": %#04x %#05x\n", (const KU8*)pHdr - pbFile, pHdr->bType, pHdr->cbRec));
+        switch (pHdr->bType)
+        {
+            /*
+             * The T/L Header contains the source name. When emitting CodeView 4
+             * and earlier (like masm and watcom does), all includes used by the
+             * line number tables have their own THEADR record.
+             */
+            case KDEPOMF_THEADR:
+            case KDEPOMF_LHEADR:
+            {
+                PCKDEPOMFTHEADR pTHeadr = (PCKDEPOMFTHEADR)pHdr;
+                if (1 + pTHeadr->Name.cch + 1 != pHdr->cbRec)
+                    return kDepErr(pThis, 1, "%#07x - Bad %cHEADR record, length mismatch.",
+                                   (const KU8*)pHdr - pbFile, pHdr->bType == KDEPOMF_THEADR ? 'T' : 'L');
+                if (    (   pTHeadr->Name.cch > 2
+                         && pTHeadr->Name.ach[pTHeadr->Name.cch - 2] == '.'
+                         && (   pTHeadr->Name.ach[pTHeadr->Name.cch - 1] == 'o'
+                             || pTHeadr->Name.ach[pTHeadr->Name.cch - 1] == 'O'))
+                    ||  (   pTHeadr->Name.cch > 4
+                         && pTHeadr->Name.ach[pTHeadr->Name.cch - 4] == '.'
+                         && (   pTHeadr->Name.ach[pTHeadr->Name.cch - 3] == 'o'
+                             || pTHeadr->Name.ach[pTHeadr->Name.cch - 3] == 'O')
+                         && (   pTHeadr->Name.ach[pTHeadr->Name.cch - 2] == 'b'
+                             || pTHeadr->Name.ach[pTHeadr->Name.cch - 2] == 'B')
+                         && (   pTHeadr->Name.ach[pTHeadr->Name.cch - 1] == 'j'
+                             || pTHeadr->Name.ach[pTHeadr->Name.cch - 1] == 'J'))
+                   )
+                    dprintf(("%cHEADR: %.*s [ignored]\n", pHdr->bType == KDEPOMF_THEADR ? 'T' : 'L', pTHeadr->Name.cch, pTHeadr->Name.ach));
+                else
+                {
+                    dprintf(("%cHEADR: %.*s\n", pHdr->bType == KDEPOMF_THEADR ? 'T' : 'L', pTHeadr->Name.cch, pTHeadr->Name.ach));
+                    depAdd(&pThis->Core, pTHeadr->Name.ach, pTHeadr->Name.cch);
+                    iMaybeSrc++;
+                }
+                uLinNumType = KU8_MAX;
+                break;
+            }
+
+            case KDEPOMF_COMENT:
+            {
+                KU8 uClass;
+
+                if (pHdr->cbRec < 2 + 1)
+                    return kDepErr(pThis, 1, "%#07x - Bad COMMENT record, too small.", (const KU8*)pHdr - pbFile);
+                if (uData.pb[0] & 0x3f)
+                    return kDepErr(pThis, 1, "%#07x - Bad COMMENT record, reserved flags set.", (const KU8*)pHdr - pbFile);
+                uClass = uData.pb[1];
+                uData.pb += 2;
+                switch (uClass)
+                {
+                    /*
+                     * Borland dependency file comment (famously used by wmake and Watcom).
+                     */
+                    case KDEPOMF_CMTCLS_DEPENDENCY:
+                    {
+                        PCKDEPOMFDEPFILE pDep = (PCKDEPOMFDEPFILE)pHdr;
+                        if (K_OFFSETOF(KDEPOMFDEPFILE, Name.ach[pDep->Name.cch]) + 1 != pHdr->cbRec + sizeof(*pHdr))
+                        {
+                            /* Empty record indicates the end of the dependency files,
+                               no need to go on. */
+                            if (pHdr->cbRec == 2 + 1)
+                                return 0;
+                            return kDepErr(pThis, 1, "%#07lx - Bad DEPENDENCY FILE record, length mismatch. (%u/%u)",
+                                           (long)((const KU8 *)pHdr - pbFile),
+                                           K_OFFSETOF(KDEPOMFDEPFILE, Name.ach[pDep->Name.cch]) + 1,
+                                           (unsigned)(pHdr->cbRec + sizeof(*pHdr)));
+                        }
+                        depAdd(&pThis->Core, pDep->Name.ach, pDep->Name.cch);
+                        iSrc++;
+                        break;
+                    }
+
+                    /*
+                     * Pick up the debug type so we can parse the LINNUM records.
+                     */
+                    case KDEPOMF_CMTCLS_DBGTYPE:
+                        if (pHdr->cbRec < 2 + 3 + 1)
+                            break; /* ignore, Borland used this for something else apparently. */
+                        if (    !(uData.pb[1] == 'C' && uData.pb[2] == 'V')
+                            &&  !(uData.pb[1] == 'H' && uData.pb[2] == 'L'))
+                        {
+                            dprintf(("Unknown debug type: %c%c (%u)\n", uData.pb[1], uData.pb[2], uData.pb[0]));
+                            break;
+                        }
+                        uDbgType = uData.pb[1];
+                        uDbgVer  = uData.pb[0];
+                        dprintf(("Debug Type %s ver %u\n", uDbgType == 'H' ? "HLL" : "CodeView", uDbgVer));
+                        break;
+
+                }
+                break; /* COMENT */
+            }
+
+            /*
+             * LINNUM + THEADR == sigar.
+             */
+            case KDEPOMF_LINNUM:
+                if (uDbgType == 'C')
+                    iMaybeSrc |= KU32_C(0x80000000);
+                dprintf(("LINNUM:\n"));
+                break;
+
+            /*
+             * The HLL v4 and v6 file names table will include all files when present, which
+             * is perfect for generating dependencies.
+             */
+            case KDEPOMF_LINNUM32:
+                if (    uDbgType == 'H'
+                    &&  uDbgVer >= 3
+                    &&  uDbgVer <= 6)
+                {
+                    /* skip two indexes (group & segment) */
+                    KU16 cbRecLeft = pHdr->cbRec - 1;
+                    KU16 uGrp = kDepObjOMFGetIndex(&uData, &cbRecLeft);
+                    KU16 uSeg = kDepObjOMFGetIndex(&uData, &cbRecLeft);
+                    if (uSeg == KU16_MAX)
+                        return kDepErr(pThis, 1, "%#07lx - Bad LINNUM32 record", (long)((const KU8 *)pHdr - pbFile));
+                    K_NOREF(uGrp);
+
+                    if (uLinNumType == KU8_MAX)
+                    {
+#ifdef WITH_DPRINTF
+                        static const char * const s_apsz[5] =
+                        {
+                            "source file", "listing file", "source & listing file", "file names table", "path table"
+                        };
+#endif
+                        KU16 uLine;
+                        KU8  uReserved;
+                        KU16 uSeg2;
+                        KU32 cbLinNames;
+
+                        if (cbRecLeft < 2+1+1+2+2+4)
+                            return kDepErr(pThis, 1, "%#07lx - Bad LINNUM32 record, too short", (long)((const KU8 *)pHdr - pbFile));
+                        cbRecLeft  -= 2+1+1+2+2+4;
+                        uLine       = *uData.pu16++;
+                        uLinNumType = *uData.pu8++;
+                        uReserved   = *uData.pu8++;  K_NOREF(uReserved);
+                        cLinNums    = *uData.pu16++; K_NOREF(cLinNums);
+                        uSeg2       = *uData.pu16++; K_NOREF(uSeg2);
+                        cbLinNames  = *uData.pu32++; K_NOREF(cbLinNames);
+
+                        dprintf(("LINNUM32: uGrp=%#x uSeg=%#x uSeg2=%#x uLine=%#x (MBZ) uReserved=%#x\n",
+                                 uGrp, uSeg, uSeg2, uLine, uReserved));
+                        dprintf(("LINNUM32: cLinNums=%#x (%u) cbLinNames=%#x (%u) uLinNumType=%#x (%s)\n",
+                                 cLinNums, cLinNums, cbLinNames, cbLinNames, uLinNumType,
+                                 uLinNumType < K_ELEMENTS(s_apsz) ? s_apsz[uLinNumType] : "??"));
+
+                        if (uLine != 0)
+                            return kDepErr(pThis, 1, "%#07lx - Bad LINNUM32 record, line %#x (MBZ)", (long)((const KU8 *)pHdr - pbFile), uLine);
+                        cLinFiles = iLinFile = KU32_MAX;
+                        if (   uLinNumType == 3 /* file names table */
+                            || uLinNumType == 4 /* path table */)
+                            cLinNums = 0; /* no line numbers */
+                        else if (uLinNumType > 4)
+                            return kDepErr(pThis, 1, "%#07lx - Bad LINNUM32 record, type %#x unknown", (long)((const KU8 *)pHdr - pbFile), uLinNumType);
+                    }
+                    else
+                        dprintf(("LINNUM32: uGrp=%#x uSeg=%#x\n", uGrp, uSeg));
+
+
+                    /* Skip file numbers (we parse them to follow the stream correctly). */
+                    if (uLinNumType != 3 && uLinNumType != 4)
+                    {
+                        static const KU16 s_acbTypes[3] = { 2+2+4, 4+4+4, 2+2+4+4+4 };
+                        KU16              cbEntry = s_acbTypes[uLinNumType];
+
+                        while (cLinNums && cbRecLeft)
+                        {
+                            if (cbRecLeft < cbEntry)
+                                return kDepErr(pThis, 1, "%#07lx - Bad LINNUM32 record, incomplete line entry", (long)((const KU8 *)pHdr - pbFile));
+
+                            switch (uLinNumType)
+                            {
+                                case 0: /* source file */
+                                    dprintf((" Line %6" KU16_PRI " of file %2" KU16_PRI " at %#010" KX32_PRI "\n",
+                                             uData.pu16[0], uData.pu16[1], uData.pu32[1]));
+                                    break;
+                                case 1: /* listing file */
+                                    dprintf((" Line %6" KU32_PRI ", statement %6" KU32_PRI " at %#010" KX32_PRI "\n",
+                                             uData.pu32[0], uData.pu32[1], uData.pu32[2]));
+                                    break;
+                                case 2: /* source & listing file */
+                                    dprintf((" Line %6" KU16_PRI " of file %2" KU16_PRI ", listning line %6" KU32_PRI ", statement %6" KU32_PRI " at %#010" KX32_PRI "\n",
+                                             uData.pu16[0], uData.pu16[1], uData.pu32[1], uData.pu32[2], uData.pu32[3]));
+                                    break;
+                            }
+                            uData.pb += cbEntry;
+                            cbRecLeft -= cbEntry;
+                            cLinNums--;
+                        }
+
+                        /* If at end of the announced line number entiries, we may find a file names table
+                           here (who is actually emitting this?). */
+                        if (!cLinNums)
+                        {
+                            uLinNumType = cbRecLeft > 0 ? 3 : KU8_MAX;
+                            dprintf(("End-of-line-numbers; uLinNumType=%u cbRecLeft=%#x\n", uLinNumType, cbRecLeft));
+                        }
+                    }
+
+                    if (uLinNumType == 3 || uLinNumType == 4)
+                    {
+                        /* Read the file/path table header (first time only). */
+                        if (cLinFiles == KU32_MAX && iLinFile == KU32_MAX)
+                        {
+                            KU32 iFirstCol;
+                            KU32 cCols;
+
+                            if (cbRecLeft < 4+4+4)
+                                return kDepErr(pThis, 1, "%#07lx - Bad LINNUM32 record, incomplete file/path table header", (long)((const KU8 *)pHdr - pbFile));
+                            cbRecLeft -= 4+4+4;
+
+                            iFirstCol = *uData.pu32++;  K_NOREF(iFirstCol);
+                            cCols     = *uData.pu32++;  K_NOREF(cCols);
+                            cLinFiles = *uData.pu32++;
+                            dprintf(("%s table header: cLinFiles=%#" KX32_PRI " (%" KU32_PRI ") iFirstCol=%" KU32_PRI " cCols=%" KU32_PRI"\n",
+                                     uLinNumType == 3 ? "file names" : "path", cLinFiles, cLinFiles, iFirstCol, cCols));
+                            if (cLinFiles == KU32_MAX)
+                                return kDepErr(pThis, 1, "%#07lx - Bad LINNUM32 record, too many file/path table entries.", (long)((const KU8 *)pHdr - pbFile));
+                            iLinFile = 0;
+                        }
+
+                        /* Parse the file names / path table. */
+                        while (iLinFile < cLinFiles && cbRecLeft)
+                        {
+                            KU16 cbName = *uData.pb++;
+                            if (cbRecLeft < 1 + cbName)
+                                return kDepErr(pThis, 1, "%#07lx - Bad LINNUM32 record, file/path table entry too long.", (long)((const KU8 *)pHdr - pbFile));
+                            iLinFile++;
+                            dprintf(("#%" KU32_PRI": %.*s\n", iLinFile, cbName, uData.pch));
+                            if (uLinNumType == 3)
+                            {
+                                depAdd(&pThis->Core, uData.pch, cbName);
+                                iSrc++;
+                            }
+                            cbRecLeft -= 1 + cbName;
+                            uData.pb += cbName;
+                        }
+
+                        /* The end? */
+                        if (iLinFile == cLinFiles)
+                        {
+                            uLinNumType = KU8_MAX;
+                            dprintf(("End-of-file/path-table; cbRecLeft=%#x\n", cbRecLeft));
+                        }
+                    }
+                }
+                else
+                    dprintf(("LINNUM32: Unknown or unsupported format\n"));
+                break;
+
+        }
+
+        /* advance */
+        cbLeft -= pHdr->cbRec + sizeof(*pHdr);
+        pHdr = (PCKDEPOMFHDR)((const KU8 *)(pHdr + 1) + pHdr->cbRec);
+    }
+
+    if (cbLeft)
+        return kDepErr(pThis, 1, "%#07x - Unexpected EOF. cbLeft=%#x", (const KU8*)pHdr - pbFile, cbLeft);
+
+    if (iSrc == 0 && iMaybeSrc <= 1)
+    {
+        dprintf(("kDepObjOMFParse: No cylindrical smoking thing: iSrc=0 iMaybeSrc=%#" KX32_PRI"\n", iMaybeSrc));
+        return 2;
+    }
+    dprintf(("kDepObjOMFParse: iSrc=%" KU32_PRI " iMaybeSrc=%#" KX32_PRI "\n", iSrc, iMaybeSrc));
+    return 0;
+}
+
+
+/**
+ * Checks if this file is an OMF file or not.
+ *
+ * @returns K_TRUE if it's OMF, K_FALSE otherwise.
+ *
+ * @param   pb      The start of the file.
+ * @param   cb      The file size.
+ */
+KBOOL kDepObjOMFTest(const KU8 *pbFile, KSIZE cbFile)
+{
+    PCKDEPOMFTHEADR pHdr = (PCKDEPOMFTHEADR)pbFile;
+
+    if (cbFile <= sizeof(*pHdr))
+        return K_FALSE;
+    if (    pHdr->Hdr.bType != KDEPOMF_THEADR
+        &&  pHdr->Hdr.bType != KDEPOMF_LHEADR)
+        return K_FALSE;
+    if (pHdr->Hdr.cbRec + sizeof(pHdr->Hdr) >= cbFile)
+        return K_FALSE;
+    if (pHdr->Hdr.cbRec != 1 + pHdr->Name.cch + 1)
+        return K_FALSE;
+
+    return K_TRUE;
+}
+
+
+/**
+ * Parses a CodeView 8 symbol section.
+ *
+ * @returns 0 on success, 1 on failure, 2 if no dependencies was found.
+ * @param   pThis       The kDepObj instance data.
+ * @param   pbSyms      Pointer to the start of the symbol section.
+ * @param   cbSyms      Size of the symbol section.
+ */
+int kDepObjCOFFParseCV8SymbolSection(PKDEPOBJGLOBALS pThis, const KU8 *pbSyms, KU32 cbSyms)
+{
+    char const *    pchStrTab  = NULL;
+    KU32            cbStrTab   = 0;
+    KPCUINT         uSrcFiles  = {0};
+    KU32            cbSrcFiles = 0;
+    KU32            off        = 4;
+    KU32            iSrc       = 0;
+
+    if (cbSyms < 16)
+        return 1;
+
+    /*
+     * The parsing loop.
+     */
+    while (off < cbSyms)
+    {
+        PCKDEPCV8SYMHDR pHdr = (PCKDEPCV8SYMHDR)(pbSyms + off);
+        KPCUINT         uData;
+        KU32            cbData;
+        uData.pv = pHdr + 1;
+
+        if (off + sizeof(*pHdr) >= cbSyms)
+        {
+            kDepErr(pThis, 1, "CV symbol table entry at %08" KX32_PRI " is too long; cbSyms=%#" KX32_PRI "",
+                    off, cbSyms);
+            return 1; /* FIXME */
+        }
+
+        cbData = pHdr->cb;
+        if (off + cbData + sizeof(*pHdr) > cbSyms)
+        {
+            kDepErr(pThis, 1, "CV symbol table entry at %08" KX32_PRI " is too long; cbData=%#" KX32_PRI " cbSyms=%#" KX32_PRI,
+                    off, cbData, cbSyms);
+            return 1; /* FIXME */
+        }
+
+        /* If the size is 0, assume it covers the rest of the section. VC++ 2003 has
+           been observed doing thing. */
+        if (!cbData)
+            cbData = cbSyms - off;
+
+        switch (pHdr->uType)
+        {
+            case K_CV8_SYMBOL_INFO:
+                dprintf(("%06" KX32_PRI " %06" KX32_PRI ": Symbol Info\n", off, cbData));
+                /*dump(uData.pb, cbData, 0);*/
+                break;
+
+            case K_CV8_LINE_NUMBERS:
+                dprintf(("%06" KX32_PRI " %06" KX32_PRI ": Line numbers\n", off, cbData));
+                /*dump(uData.pb, cbData, 0);*/
+                break;
+
+            case K_CV8_STRING_TABLE:
+                dprintf(("%06" KX32_PRI " %06" KX32_PRI ": String table\n", off, cbData));
+                if (pchStrTab)
+                    warnx(pThis->pCtx, "%s: warning: Found yet another string table!", pThis->pszFile);
+                pchStrTab = uData.pch;
+                cbStrTab = cbData;
+                /*dump(uData.pb, cbData, 0);*/
+                break;
+
+            case K_CV8_SOURCE_FILES:
+                dprintf(("%06" KX32_PRI " %06" KX32_PRI ": Source files\n", off, cbData));
+                if (uSrcFiles.pb)
+                    warnx(pThis->pCtx, "%s: warning: Found yet another source files table!", pThis->pszFile);
+                uSrcFiles = uData;
+                cbSrcFiles = cbData;
+                /*dump(uData.pb, cbData, 0);*/
+                break;
+
+            case K_CV8_COMDAT_XXXXX:
+                dprintf(("%06" KX32_PRI " %06" KX32_PRI ": 0xf5 Unknown COMDAT stuff\n", off, cbData));
+                /*dump(uData.pb, cbData, 0);*/
+                break;
+
+            default:
+                dprintf(("%06" KX32_PRI " %06" KX32_PRI ": Unknown type %#" KX32_PRI "\n",
+                         off, cbData, pHdr->uType));
+                dump(uData.pb, cbData, 0);
+                break;
+        }
+
+        /* next */
+        cbData = (cbData + 3) & ~KU32_C(3);
+        off += cbData + sizeof(*pHdr);
+    }
+
+    /*
+     * Did we find any source files and strings?
+     */
+    if (!pchStrTab || !uSrcFiles.pv)
+    {
+        dprintf(("kDepObjCOFFParseCV8SymbolSection: No cylindrical smoking thing: pchStrTab=%p uSrcFiles.pv=%p\n", pchStrTab, uSrcFiles.pv));
+        return 2;
+    }
+
+    /*
+     * Iterate the source file table.
+     */
+    off = 0;
+    while (off < cbSrcFiles)
+    {
+        KU32        offFile;
+        const char *pszFile;
+        KSIZE       cchFile;
+        KU16        u16Type;
+        KPCUINT     uSrc;
+        KU32        cbSrc;
+
+        /*
+         * Validate and parse the entry (variable length record are fun).
+         */
+        if (off + 8 > cbSrcFiles)
+            return kDepErr(pThis, 1, "CV source file entry at %08" KX32_PRI " is too long; cbSrcFiles=%#" KX32_PRI,
+                           off, cbSrcFiles);
+        uSrc.pb = uSrcFiles.pb + off;
+        u16Type = uSrc.pu16[2];
+        switch (u16Type)
+        {
+            case 0x0110:    cbSrc = 6 + 16 + 2; break;  /* MD5 */
+            case 0x0214:    cbSrc = 6 + 20 + 2; break;  /* SHA1 */ /** @todo check this */
+            case 0x0320:    cbSrc = 6 + 32 + 2; break;  /* SHA-256 */
+            default:        cbSrc = 6 + 0  + 2; break;
+        }
+        if (off + cbSrc > cbSrcFiles)
+            return kDepErr(pThis, 1, "CV source file entry at %08" KX32_PRI " is too long; cbSrc=%#" KX32_PRI " cbSrcFiles=%#" KX32_PRI,
+                           off, cbSrc, cbSrcFiles);
+
+        offFile = *uSrc.pu32;
+        if (offFile > cbStrTab)
+            return kDepErr(pThis, 1, "CV source file entry at %08" KX32_PRI " is out side the string table; offFile=%#" KX32_PRI " cbStrTab=%#" KX32_PRI,
+                    off, offFile, cbStrTab);
+        pszFile = pchStrTab + offFile;
+        cchFile = strlen(pszFile);
+        if (cchFile == 0)
+            return kDepErr(pThis, 1, "CV source file entry at %08" KX32_PRI " has an empty file name; offFile=%#x" KX32_PRI,
+                           off, offFile);
+
+        /*
+         * Display the result and add it to the dependency database.
+         */
+        depAdd(&pThis->Core, pszFile, cchFile);
+#ifdef WITH_DPRINTF
+        dprintf(("#%03" KU32_PRI ": ", iSrc));
+        {
+            KU32 off = 6;
+            for (;off < cbSrc - 2; off++)
+                dprintf(("%02" KX8_PRI, uSrc.pb[off]));
+            if (cbSrc == 6)
+                dprintf(("type=%#06" KX16_PRI, u16Type));
+            dprintf((" '%s'\n", pszFile));
+        }
+#endif
+
+
+        /* next */
+        iSrc++;
+        off += cbSrc;
+    }
+
+    if (iSrc == 0)
+    {
+        dprintf(("kDepObjCOFFParseCV8SymbolSection: No cylindrical smoking thing: iSrc=0\n"));
+        return 2;
+    }
+    dprintf(("kDepObjCOFFParseCV8SymbolSection: iSrc=%" KU32_PRI "\n", iSrc));
+    return 0;
+}
+
+
+/**
+ * Parses the OMF file.
+ *
+ * @returns 0 on success, 1 on failure, 2 if no dependencies was found.
+ * @param   pThis       The kDepObj instance data.
+ * @param   pbFile      The start of the file.
+ * @param   cbFile      The file size.
+ */
+int kDepObjCOFFParse(PKDEPOBJGLOBALS pThis, const KU8 *pbFile, KSIZE cbFile)
+{
+    IMAGE_FILE_HEADER const            *pFileHdr   = (IMAGE_FILE_HEADER const *)pbFile;
+    ANON_OBJECT_HEADER_BIGOBJ const    *pBigObjHdr = (ANON_OBJECT_HEADER_BIGOBJ const *)pbFile;
+    IMAGE_SECTION_HEADER const         *paSHdrs;
+    KU32                                cSHdrs;
+    unsigned                            iSHdr;
+    KPCUINT                             u;
+    KBOOL                               fDebugS    = K_FALSE;
+    int                                 rcRet      = 2;
+    int                                 rc;
+
+    if (   pBigObjHdr->Sig1 == 0
+        && pBigObjHdr->Sig2 == KU16_MAX)
+    {
+        paSHdrs = (IMAGE_SECTION_HEADER const *)(pBigObjHdr + 1);
+        cSHdrs  = pBigObjHdr->NumberOfSections;
+    }
+    else
+    {
+        paSHdrs = (IMAGE_SECTION_HEADER const *)((KU8 const *)(pFileHdr + 1) + pFileHdr->SizeOfOptionalHeader);
+        cSHdrs  = pFileHdr->NumberOfSections;
+    }
+
+
+    dprintf(("COFF file!\n"));
+
+    for (iSHdr = 0; iSHdr < cSHdrs; iSHdr++)
+    {
+        if (    !memcmp(paSHdrs[iSHdr].Name, ".debug$S", sizeof(".debug$S") - 1)
+            &&  paSHdrs[iSHdr].SizeOfRawData > 4)
+        {
+            u.pb = pbFile + paSHdrs[iSHdr].PointerToRawData;
+            dprintf(("CV symbol table: version=%x\n", *u.pu32));
+            if (*u.pu32 == 0x000000004)
+                rc = kDepObjCOFFParseCV8SymbolSection(pThis, u.pb, paSHdrs[iSHdr].SizeOfRawData);
+            else
+                rc = 2;
+            dprintf(("rc=%d\n", rc));
+            if (rcRet == 2)
+                rcRet = rc;
+            if (rcRet != 2)
+                return rc;
+            fDebugS = K_TRUE;
+        }
+        dprintf(("#%d: %.8s\n", iSHdr, paSHdrs[iSHdr].Name));
+    }
+
+    /* If we found no dependencies but did find a .debug$S section, check if
+       this is a case where the compile didn't emit any because there is no
+       code in this compilation unit. */
+    if (rcRet == 2)
+    {
+        if (fDebugS)
+        {
+            for (iSHdr = 0; iSHdr < cSHdrs; iSHdr++)
+                if (!memcmp(paSHdrs[iSHdr].Name, ".text", sizeof(".text") - 1))
+                    return kDepErr(pThis, 2, "%s: no dependencies (has text).", pThis->pszFile);
+            warnx(pThis->pCtx, "%s: no dependencies, but also no text, so probably (mostly) harmless.", pThis->pszFile);
+            return 0;
+        }
+        kDepErr(pThis, 2, "%s: no dependencies.", pThis->pszFile);
+    }
+
+    return rcRet;
+}
+
+
+/**
+ * Checks if this file is a COFF file or not.
+ *
+ * @returns K_TRUE if it's COFF, K_FALSE otherwise.
+ *
+ * @param   pThis   The kDepObj instance data.
+ * @param   pb      The start of the file.
+ * @param   cb      The file size.
+ */
+KBOOL kDepObjCOFFTest(PKDEPOBJGLOBALS pThis, const KU8 *pbFile, KSIZE cbFile)
+{
+    IMAGE_FILE_HEADER const         *pFileHdr   = (IMAGE_FILE_HEADER const *)pbFile;
+    ANON_OBJECT_HEADER_BIGOBJ const *pBigObjHdr = (ANON_OBJECT_HEADER_BIGOBJ const *)pbFile;
+    IMAGE_SECTION_HEADER const      *paSHdrs;
+    KU32                             cSHdrs;
+    KU32                             iSHdr;
+    KSIZE                            cbHdrs;
+
+    if (cbFile <= sizeof(*pFileHdr))
+        return K_FALSE;
+
+    /*
+     * Deal with -bigobj output first.
+     */
+    if (   pBigObjHdr->Sig1 == 0
+        && pBigObjHdr->Sig2 == KU16_MAX)
+    {
+        static const KU8 s_abClsId[16] = { ANON_OBJECT_HEADER_BIGOBJ_CLS_ID_BYTES };
+
+        paSHdrs = (IMAGE_SECTION_HEADER const *)(pBigObjHdr + 1);
+        cSHdrs  = pBigObjHdr->NumberOfSections;
+        cbHdrs  = sizeof(IMAGE_SECTION_HEADER) * cSHdrs;
+
+        if (cbFile <= sizeof(*pBigObjHdr))
+            return K_FALSE;
+
+        if (pBigObjHdr->Version != 2)
+            return K_FALSE;
+        if (memcmp(&pBigObjHdr->ClassID[0], s_abClsId, sizeof(pBigObjHdr->ClassID)) != 0)
+            return K_FALSE;
+
+        if (   pBigObjHdr->Machine != IMAGE_FILE_MACHINE_I386
+            && pBigObjHdr->Machine != IMAGE_FILE_MACHINE_AMD64
+            && pBigObjHdr->Machine != IMAGE_FILE_MACHINE_ARM
+            && pBigObjHdr->Machine != IMAGE_FILE_MACHINE_ARMNT
+            && pBigObjHdr->Machine != IMAGE_FILE_MACHINE_ARM64
+            && pBigObjHdr->Machine != IMAGE_FILE_MACHINE_EBC)
+        {
+            kDepErr(pThis, 1, "bigobj Machine not supported: %#x", pBigObjHdr->Machine);
+            return K_FALSE;
+        }
+        if (pBigObjHdr->Flags != 0)
+        {
+            kDepErr(pThis, 1, "bigobj Flags field is non-zero: %#x", pBigObjHdr->Flags);
+            return K_FALSE;
+        }
+        if (pBigObjHdr->SizeOfData != 0)
+        {
+            kDepErr(pThis, 1, "bigobj SizeOfData field is non-zero: %#x", pBigObjHdr->SizeOfData);
+            return K_FALSE;
+        }
+
+        if (   pBigObjHdr->PointerToSymbolTable != 0
+            && (   pBigObjHdr->PointerToSymbolTable < cbHdrs
+                || pBigObjHdr->PointerToSymbolTable > cbFile))
+            return K_FALSE;
+        if (   pBigObjHdr->PointerToSymbolTable == 0
+            && pBigObjHdr->NumberOfSymbols != 0)
+            return K_FALSE;
+    }
+    /*
+     * Look for normal COFF object.
+     */
+    else
+    {
+        paSHdrs = (IMAGE_SECTION_HEADER const *)((KU8 const *)(pFileHdr + 1) + pFileHdr->SizeOfOptionalHeader);
+        cSHdrs  = pFileHdr->NumberOfSections;
+        cbHdrs  = (const KU8 *)&paSHdrs[cSHdrs] - (const KU8 *)pbFile;
+
+        if (   pFileHdr->Machine != IMAGE_FILE_MACHINE_I386
+            && pFileHdr->Machine != IMAGE_FILE_MACHINE_AMD64
+            && pFileHdr->Machine != IMAGE_FILE_MACHINE_ARM
+            && pFileHdr->Machine != IMAGE_FILE_MACHINE_ARMNT
+            && pFileHdr->Machine != IMAGE_FILE_MACHINE_ARM64
+            && pFileHdr->Machine != IMAGE_FILE_MACHINE_EBC)
+               return K_FALSE;
+
+        if (pFileHdr->SizeOfOptionalHeader != 0)
+            return K_FALSE; /* COFF files doesn't have an optional header */
+
+        if (   pFileHdr->PointerToSymbolTable != 0
+            && (   pFileHdr->PointerToSymbolTable < cbHdrs
+                || pFileHdr->PointerToSymbolTable > cbFile))
+            return K_FALSE;
+        if (   pFileHdr->PointerToSymbolTable == 0
+            && pFileHdr->NumberOfSymbols != 0)
+            return K_FALSE;
+        if (  pFileHdr->Characteristics
+            & (  IMAGE_FILE_DLL
+               | IMAGE_FILE_SYSTEM
+               | IMAGE_FILE_UP_SYSTEM_ONLY
+               | IMAGE_FILE_NET_RUN_FROM_SWAP
+               | IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP
+               | IMAGE_FILE_EXECUTABLE_IMAGE
+               | IMAGE_FILE_RELOCS_STRIPPED))
+            return K_FALSE;
+    }
+    if (   cSHdrs <= 1
+        || cSHdrs > cbFile)
+        return K_FALSE;
+    if (cbHdrs >= cbFile)
+        return K_FALSE;
+
+    /*
+     * Check the section headers.
+     */
+    for (iSHdr = 0; iSHdr < cSHdrs; iSHdr++)
+    {
+        if (   paSHdrs[iSHdr].PointerToRawData != 0
+            && (   paSHdrs[iSHdr].PointerToRawData < cbHdrs
+                || paSHdrs[iSHdr].PointerToRawData >= cbFile
+                || paSHdrs[iSHdr].PointerToRawData + paSHdrs[iSHdr].SizeOfRawData > cbFile))
+            return K_FALSE;
+        if (   paSHdrs[iSHdr].PointerToRelocations != 0
+            && (   paSHdrs[iSHdr].PointerToRelocations < cbHdrs
+                || paSHdrs[iSHdr].PointerToRelocations >= cbFile
+                || paSHdrs[iSHdr].PointerToRelocations + paSHdrs[iSHdr].NumberOfRelocations * 10 > cbFile)) /* IMAGE_RELOCATION */
+            return K_FALSE;
+        if (   paSHdrs[iSHdr].PointerToLinenumbers != 0
+            && (   paSHdrs[iSHdr].PointerToLinenumbers < cbHdrs
+                || paSHdrs[iSHdr].PointerToLinenumbers >= cbFile
+                || paSHdrs[iSHdr].PointerToLinenumbers + paSHdrs[iSHdr].NumberOfLinenumbers *  6 > cbFile)) /* IMAGE_LINENUMBER */
+            return K_FALSE;
+    }
+
+    return K_TRUE;
+}
+
+
+/**
+ * Read the file into memory and parse it.
+ */
+static int kDepObjProcessFile(PKDEPOBJGLOBALS pThis, FILE *pInput)
+{
+    size_t      cbFile;
+    KU8        *pbFile;
+    void       *pvOpaque;
+    int         rc = 0;
+
+    /*
+     * Read the file into memory.
+     */
+    pbFile = (KU8 *)depReadFileIntoMemory(pInput, &cbFile, &pvOpaque);
+    if (!pbFile)
+        return 1;
+
+    /*
+     * See if it's an OMF file, then process it.
+     */
+    if (kDepObjOMFTest(pbFile, cbFile))
+        rc = kDepObjOMFParse(pThis, pbFile, cbFile);
+    else if (kDepObjCOFFTest(pThis, pbFile, cbFile))
+        rc = kDepObjCOFFParse(pThis, pbFile, cbFile);
+    else
+        rc = kDepErr(pThis, 1, "Doesn't recognize the header of the OMF/COFF file.");
+
+    depFreeFileMemory(pbFile, pvOpaque);
+    return rc;
+}
+
+
+static void kDebObjUsage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+    kmk_builtin_ctx_printf(pCtx, fIsErr,
+                           "usage: %s -o <output> -t <target> [-fqs] [-e <ignore-ext>] <OMF or COFF file>\n"
+                           "   or: %s --help\n"
+                           "   or: %s --version\n",
+                           pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName);
+}
+
+
+int kmk_builtin_kDepObj(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+    int             i;
+    KDEPOBJGLOBALS  This;
+
+    /* Arguments. */
+    FILE       *pOutput = NULL;
+    const char *pszOutput = NULL;
+    FILE       *pInput = NULL;
+    const char *pszTarget = NULL;
+    int         fStubs = 0;
+    int         fFixCase = 0;
+    const char *pszIgnoreExt = NULL;
+    /* Argument parsing. */
+    int         fInput = 0;             /* set when we've found input argument. */
+    int         fQuiet = 0;
+
+    /* Init instance data.   */
+    This.pCtx = pCtx;
+    This.pszFile = NULL;
+
+    /*
+     * Parse arguments.
+     */
+    if (argc <= 1)
+    {
+        kDebObjUsage(pCtx, 0);
+        return 1;
+    }
+    for (i = 1; i < argc; i++)
+    {
+        if (argv[i][0] == '-')
+        {
+            const char *pszValue;
+            const char *psz = &argv[i][1];
+            char chOpt;
+            chOpt = *psz++;
+            if (chOpt == '-')
+            {
+                /* Convert long to short option. */
+                if (!strcmp(psz, "quiet"))
+                    chOpt = 'q';
+                else if (!strcmp(psz, "help"))
+                    chOpt = '?';
+                else if (!strcmp(psz, "version"))
+                    chOpt = 'V';
+                else
+                {
+                    errx(pCtx, 2, "Invalid argument '%s'.", argv[i]);
+                    kDebObjUsage(pCtx, 1);
+                    return 2;
+                }
+                psz = "";
+            }
+
+            /*
+             * Requires value?
+             */
+            switch (chOpt)
+            {
+                case 'o':
+                case 't':
+                case 'e':
+                    if (*psz)
+                        pszValue = psz;
+                    else if (++i < argc)
+                        pszValue = argv[i];
+                    else
+                        return errx(pCtx, 2, "The '-%c' option takes a value.", chOpt);
+                    break;
+
+                default:
+                    pszValue = NULL;
+                    break;
+            }
+
+
+            switch (chOpt)
+            {
+                /*
+                 * Output file.
+                 */
+                case 'o':
+                {
+                    if (pOutput)
+                        return errx(pCtx, 2, "only one output file!");
+                    pszOutput = pszValue;
+                    if (pszOutput[0] == '-' && !pszOutput[1])
+                        pOutput = stdout;
+                    else
+                        pOutput = fopen(pszOutput, "w" KMK_FOPEN_NO_INHERIT_MODE);
+                    if (!pOutput)
+                        return err(pCtx, 1, "Failed to create output file '%s'", pszOutput);
+                    break;
+                }
+
+                /*
+                 * Target name.
+                 */
+                case 't':
+                {
+                    if (pszTarget)
+                        return errx(pCtx, 2, "only one target!");
+                    pszTarget = pszValue;
+                    break;
+                }
+
+                /*
+                 * Fix case.
+                 */
+                case 'f':
+                {
+                    fFixCase = 1;
+                    break;
+                }
+
+                /*
+                 * Quiet.
+                 */
+                case 'q':
+                {
+                    fQuiet = 1;
+                    break;
+                }
+
+                /*
+                 * Generate stubs.
+                 */
+                case 's':
+                {
+                    fStubs = 1;
+                    break;
+                }
+
+                /*
+                 * Extension to ignore.
+                 */
+                case 'e':
+                {
+                    if (pszIgnoreExt)
+                        return errx(pCtx, 2, "The '-e' option can only be used once!");
+                    pszIgnoreExt = pszValue;
+                    break;
+                }
+
+                /*
+                 * The mandatory version & help.
+                 */
+                case '?':
+                    kDebObjUsage(pCtx, 0);
+                    return 0;
+                case 'V':
+                case 'v':
+                    return kbuild_version(argv[0]);
+
+                /*
+                 * Invalid argument.
+                 */
+                default:
+                    errx(pCtx, 2, "Invalid argument '%s'.", argv[i]);
+                    kDebObjUsage(pCtx, 1);
+                    return 2;
+            }
+        }
+        else
+        {
+            pInput = fopen(argv[i], "rb" KMK_FOPEN_NO_INHERIT_MODE);
+            if (!pInput)
+                return err(pCtx, 1, "Failed to open input file '%s'", argv[i]);
+            This.pszFile = argv[i];
+            fInput = 1;
+        }
+
+        /*
+         * End of the line?
+         */
+        if (fInput)
+        {
+            if (++i < argc)
+                return errx(pCtx, 2, "No arguments shall follow the input spec.");
+            break;
+        }
+    }
+
+    /*
+     * Got all we require?
+     */
+    if (!pInput)
+        return errx(pCtx, 2, "No input!");
+    if (!pOutput)
+        return errx(pCtx, 2, "No output!");
+    if (!pszTarget)
+        return errx(pCtx, 2, "No target!");
+
+    /*
+     * Do the parsing.
+     */
+    depInit(&This.Core);
+    i = kDepObjProcessFile(&This, pInput);
+    fclose(pInput);
+
+    /*
+     * Write the dependecy file.
+     */
+    if (!i)
+    {
+        depOptimize(&This.Core, fFixCase, fQuiet, pszIgnoreExt);
+        depPrintTargetWithDeps(&This.Core, pOutput, pszTarget, 1 /*fEscapeTarget*/);
+        if (fStubs)
+            depPrintStubs(&This.Core, pOutput);
+    }
+
+    /*
+     * Close the output, delete output on failure.
+     */
+    if (!i && ferror(pOutput))
+        i = errx(pCtx, 1, "Error writing to '%s'", pszOutput);
+    fclose(pOutput);
+    if (i)
+    {
+        if (unlink(pszOutput))
+            warn(pCtx, "warning: failed to remove output file '%s' on failure.", pszOutput);
+    }
+
+    depCleanup(&This.Core);
+    return i;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kDepObj", NULL };
+    return kmk_builtin_kDepObj(argc, argv, envp, &Ctx);
+}
+#endif
+
diff --git a/src/kmk/kmkbuiltin/kSubmit.c b/src/kmk/kmkbuiltin/kSubmit.c
new file mode 100644
index 0000000..dffa198
--- /dev/null
+++ b/src/kmk/kmkbuiltin/kSubmit.c
@@ -0,0 +1,2116 @@
+/* $Id: kSubmit.c 3413 2020-08-20 08:20:15Z bird $ */
+/** @file
+ * kMk Builtin command - submit job to a kWorker.
+ */
+
+/*
+ * Copyright (c) 2007-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#ifdef __APPLE__
+# define _POSIX_C_SOURCE 1 /* 10.4 sdk and unsetenv */
+#endif
+#include "makeint.h"
+#include "job.h"
+#include "variable.h"
+#include "pathstuff.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+#if defined(_MSC_VER)
+# include <ctype.h>
+# include <io.h>
+# include <direct.h>
+# include <process.h>
+#else
+# include <unistd.h>
+#endif
+#ifdef KBUILD_OS_WINDOWS
+# ifndef CONFIG_NEW_WIN_CHILDREN
+#  include "sub_proc.h"
+# else
+#  include "../w32/winchildren.h"
+# endif
+# include "nt/nt_child_inject_standard_handles.h"
+#endif
+
+#include "kbuild.h"
+#include "kmkbuiltin.h"
+#include "err.h"
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/** Hashes a pid. */
+#define KWORKER_PID_HASH(a_pid) ((size_t)(a_pid) % 61)
+
+#define TUPLE(a_sz)     a_sz, sizeof(a_sz) - 1
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct WORKERINSTANCE *PWORKERINSTANCE;
+typedef struct WORKERINSTANCE
+{
+    /** Pointer to the next worker instance. */
+    PWORKERINSTANCE         pNext;
+    /** Pointer to the previous worker instance. */
+    PWORKERINSTANCE         pPrev;
+    /** Pointer to the next worker with the same pid hash slot. */
+    PWORKERINSTANCE         pNextPidHash;
+    /** 32 or 64. */
+    unsigned                cBits;
+    /** The process ID of the kWorker process. */
+    pid_t                   pid;
+    union
+    {
+        struct
+        {
+            /** The exit code. */
+            int32_t         rcExit;
+            /** Set to 1 if the worker is exiting. */
+            uint8_t         bWorkerExiting;
+            uint8_t         abUnused[3];
+        } s;
+        uint8_t             ab[8];
+    } Result;
+    /** Number of result bytes read alread.  */
+    size_t                  cbResultRead;
+
+#ifdef KBUILD_OS_WINDOWS
+    /** The process handle. */
+    HANDLE                  hProcess;
+    /** The bi-directional pipe we use to talk to the kWorker process. */
+    HANDLE                  hPipe;
+    /** For overlapped read (have valid event semaphore). */
+    OVERLAPPED              OverlappedRead;
+# ifdef CONFIG_NEW_WIN_CHILDREN
+    /** Standard output catcher (reused). */
+    PWINCCWPIPE             pStdOut;
+    /** Standard error catcher (reused). */
+    PWINCCWPIPE             pStdErr;
+# endif
+#else
+    /** The socket descriptor we use to talk to the kWorker process. */
+    int                     fdSocket;
+#endif
+
+    /** --debug-dump-history-on-failure.   */
+    int                     fDebugDumpHistoryOnFailure;
+    /** Current history index (must mod with aHistory element count). */
+    unsigned                iHistory;
+    /** History.   */
+    struct
+    {
+        /** Pointer to the message, NULL if none. */
+        void               *pvMsg;
+        /** The message size, zero if not present. */
+        size_t              cbMsg;
+    } aHistory[4];
+
+    /** What it's busy with.  NULL if idle. */
+    struct child           *pBusyWith;
+} WORKERINSTANCE;
+
+
+typedef struct WORKERLIST
+{
+    /** The head of the list.  NULL if empty. */
+    PWORKERINSTANCE         pHead;
+    /** The tail of the list.  NULL if empty. */
+    PWORKERINSTANCE         pTail;
+    /** Number of list entries. */
+    size_t                  cEntries;
+} WORKERLIST;
+typedef WORKERLIST *PWORKERLIST;
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** List of idle worker.*/
+static WORKERLIST           g_IdleList;
+/** List of busy workers. */
+static WORKERLIST           g_BusyList;
+/** PID hash table for the workers.
+ * @sa KWORKER_PID_HASH() */
+static PWORKERINSTANCE      g_apPidHash[61];
+
+#ifdef KBUILD_OS_WINDOWS
+/** For naming the pipes.
+ * Also indicates how many worker instances we've spawned. */
+static unsigned             g_uWorkerSeqNo = 0;
+#endif
+/** Set if we've registred the atexit handler already. */
+static int                  g_fAtExitRegistered = 0;
+
+/** @var g_cArchBits
+ * The bit count of the architecture this binary is compiled for. */
+/** @var g_szArch
+ * The name of the architecture this binary is compiled for. */
+/** @var g_cArchBits
+ * The bit count of the alternative architecture. */
+/** @var g_szAltArch
+ * The name of the alternative architecture. */
+#if defined(KBUILD_ARCH_AMD64)
+static unsigned             g_cArchBits    = 64;
+static char const           g_szArch[]     = "amd64";
+static unsigned             g_cAltArchBits = 32;
+static char const           g_szAltArch[]  = "x86";
+#elif defined(KBUILD_ARCH_X86)
+static unsigned             g_cArchBits    = 32;
+static char const           g_szArch[]     = "x86";
+static unsigned             g_cAltArchBits = 64;
+static char const           g_szAltArch[]  = "amd64";
+#else
+# error "Port me!"
+#endif
+
+#ifdef KBUILD_OS_WINDOWS
+/** The processor group allocator state. */
+static MKWINCHILDCPUGROUPALLOCSTATE g_SubmitProcessorGroupAllocator;
+# if K_ARCH_BITS == 64
+/** The processor group allocator state for 32-bit processes. */
+static MKWINCHILDCPUGROUPALLOCSTATE g_SubmitProcessorGroupAllocator32;
+# endif
+#endif
+
+#ifdef KBUILD_OS_WINDOWS
+/** Pointer to kernel32!SetThreadGroupAffinity. */
+static BOOL (WINAPI *g_pfnSetThreadGroupAffinity)(HANDLE, const GROUP_AFFINITY*, GROUP_AFFINITY *);
+#endif
+
+
+
+/**
+ * Unlinks a worker instance from a list.
+ *
+ * @param   pList               The list.
+ * @param   pWorker             The worker.
+ */
+static void kSubmitListUnlink(PWORKERLIST pList, PWORKERINSTANCE pWorker)
+{
+    PWORKERINSTANCE pNext = pWorker->pNext;
+    PWORKERINSTANCE pPrev = pWorker->pPrev;
+
+    if (pNext)
+    {
+        assert(pNext->pPrev == pWorker);
+        pNext->pPrev = pPrev;
+    }
+    else
+    {
+        assert(pList->pTail == pWorker);
+        pList->pTail = pPrev;
+    }
+
+    if (pPrev)
+    {
+        assert(pPrev->pNext == pWorker);
+        pPrev->pNext = pNext;
+    }
+    else
+    {
+        assert(pList->pHead == pWorker);
+        pList->pHead = pNext;
+    }
+
+    assert(!pList->pHead || pList->pHead->pPrev == NULL);
+    assert(!pList->pTail || pList->pTail->pNext == NULL);
+
+    assert(pList->cEntries > 0);
+    pList->cEntries--;
+
+    pWorker->pNext = NULL;
+    pWorker->pPrev = NULL;
+}
+
+
+/**
+ * Appends a worker instance to the tail of a list.
+ *
+ * @param   pList               The list.
+ * @param   pWorker             The worker.
+ */
+static void kSubmitListAppend(PWORKERLIST pList, PWORKERINSTANCE pWorker)
+{
+    PWORKERINSTANCE pTail = pList->pTail;
+
+    assert(pTail != pWorker);
+    assert(pList->pHead != pWorker);
+
+    pWorker->pNext = NULL;
+    pWorker->pPrev = pTail;
+    if (pTail != NULL)
+    {
+        assert(pTail->pNext == NULL);
+        pTail->pNext = pWorker;
+    }
+    else
+    {
+        assert(pList->pHead == NULL);
+        pList->pHead = pWorker;
+    }
+    pList->pTail = pWorker;
+
+    assert(pList->pHead->pPrev == NULL);
+    assert(pList->pTail->pNext == NULL);
+
+    pList->cEntries++;
+}
+
+
+/**
+ * Remove worker from the process ID hash table.
+ *
+ * @param   pWorker             The worker.
+ */
+static void kSubmitPidHashRemove(PWORKERINSTANCE pWorker)
+{
+    size_t idxHash = KWORKER_PID_HASH(pWorker->pid);
+    if (g_apPidHash[idxHash] == pWorker)
+        g_apPidHash[idxHash] = pWorker->pNext;
+    else
+    {
+        PWORKERINSTANCE pPrev = g_apPidHash[idxHash];
+        while (pPrev && pPrev->pNext != pWorker)
+            pPrev = pPrev->pNext;
+        assert(pPrev != NULL);
+        if (pPrev)
+            pPrev->pNext = pWorker->pNext;
+    }
+    pWorker->pid = -1;
+}
+
+
+/**
+ * Looks up a worker by its process ID.
+ *
+ * @returns Pointer to the worker instance if found. NULL if not.
+ * @param   pid                 The process ID of the worker.
+ */
+static PWORKERINSTANCE kSubmitFindWorkerByPid(pid_t pid)
+{
+    PWORKERINSTANCE pWorker = g_apPidHash[KWORKER_PID_HASH(pid)];
+    while (pWorker && pWorker->pid != pid)
+        pWorker = pWorker->pNextPidHash;
+    return pWorker;
+}
+
+
+/**
+ * Calcs the path to the kWorker binary for the worker.
+ *
+ * @returns
+ * @param   pCtx            The command execution context.
+ * @param   pWorker         The worker (for its bitcount).
+ * @param   pszExecutable   The output buffer.
+ * @param   cbExecutable    The output buffer size.
+ */
+static int kSubmitCalcExecutablePath(PKMKBUILTINCTX pCtx, PWORKERINSTANCE pWorker, char *pszExecutable, size_t cbExecutable)
+{
+#if defined(KBUILD_OS_WINDOWS) || defined(KBUILD_OS_OS2)
+    static const char   s_szWorkerName[] = "kWorker.exe";
+#else
+    static const char   s_szWorkerName[] = "kWorker";
+#endif
+    const char         *pszBinPath = get_kbuild_bin_path();
+    size_t const        cchBinPath = strlen(pszBinPath);
+    size_t              cchExecutable;
+    if (   pWorker->cBits == g_cArchBits
+        ?  cchBinPath + 1 + sizeof(s_szWorkerName) <= cbExecutable
+        :  cchBinPath + 1 - sizeof(g_szArch) + sizeof(g_szAltArch) + sizeof(s_szWorkerName) <= cbExecutable )
+    {
+        memcpy(pszExecutable, pszBinPath, cchBinPath);
+        cchExecutable = cchBinPath;
+
+        /* Replace the arch bin directory extension with the alternative one if requested. */
+        if (pWorker->cBits != g_cArchBits)
+        {
+            if (   cchBinPath < sizeof(g_szArch)
+                || memcmp(&pszExecutable[cchBinPath - sizeof(g_szArch) + 1], g_szArch, sizeof(g_szArch) - 1) != 0)
+                return errx(pCtx, 1, "KBUILD_BIN_PATH does not end with main architecture (%s) as expected: %s",
+                            pszBinPath, g_szArch);
+            cchExecutable -= sizeof(g_szArch) - 1;
+            memcpy(&pszExecutable[cchExecutable], g_szAltArch, sizeof(g_szAltArch) - 1);
+            cchExecutable += sizeof(g_szAltArch) - 1;
+        }
+
+        /* Append a slash and the worker name. */
+        pszExecutable[cchExecutable++] = '/';
+        memcpy(&pszExecutable[cchExecutable], s_szWorkerName, sizeof(s_szWorkerName));
+        return 0;
+    }
+    return errx(pCtx, 1, "KBUILD_BIN_PATH is too long");
+}
+
+
+#ifdef KBUILD_OS_WINDOWS
+/**
+ * Calcs the UTF-16 path to the kWorker binary for the worker.
+ *
+ * @returns
+ * @param   pCtx            The command execution context.
+ * @param   pWorker         The worker (for its bitcount).
+ * @param   pwszExecutable  The output buffer.
+ * @param   cwcExecutable   The output buffer size.
+ */
+static int kSubmitCalcExecutablePathW(PKMKBUILTINCTX pCtx, PWORKERINSTANCE pWorker, wchar_t *pwszExecutable, size_t cwcExecutable)
+{
+    char szExecutable[MAX_PATH];
+    int rc = kSubmitCalcExecutablePath(pCtx, pWorker, szExecutable, sizeof(szExecutable));
+    if (rc == 0)
+    {
+        int cwc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, szExecutable, strlen(szExecutable) + 1,
+                                      pwszExecutable, cwcExecutable);
+        if (cwc > 0)
+            return 0;
+        return errx(pCtx, 1, "MultiByteToWideChar failed on '%s': %u", szExecutable, GetLastError());
+    }
+    return rc;
+}
+#endif
+
+
+/**
+ * Creates a new worker process.
+ *
+ * @returns 0 on success, non-zero value on failure.
+ * @param   pCtx                The command execution context.
+ * @param   pWorker             The worker structure.  Caller does the linking
+ *                              (as we might be reusing an existing worker
+ *                              instance because a worker shut itself down due
+ *                              to high resource leak level).
+ * @param   cVerbosity          The verbosity level.
+ */
+static int kSubmitSpawnWorker(PKMKBUILTINCTX pCtx, PWORKERINSTANCE pWorker, int cVerbosity)
+{
+    int rc;
+#ifdef KBUILD_OS_WINDOWS
+    wchar_t wszExecutable[MAX_PATH];
+#else
+    PATH_VAR(szExecutable);
+#endif
+
+    /*
+     * Get the output path so it can be passed on as a volatile.
+     */
+    const char      *pszVarVolatile;
+    struct variable *pVarVolatile = lookup_variable(TUPLE("PATH_OUT"));
+    if (pVarVolatile)
+        pszVarVolatile = "PATH_OUT";
+    else
+    {
+        pVarVolatile = lookup_variable(TUPLE("PATH_OUT_BASE"));
+        if (pVarVolatile)
+            pszVarVolatile = "PATH_OUT_BASE";
+        else
+            warn(pCtx, "Neither PATH_OUT_BASE nor PATH_OUT was found.");
+    }
+    if (pVarVolatile && strchr(pVarVolatile->value, '"'))
+        return errx(pCtx, -1, "%s contains double quotes.", pszVarVolatile);
+    if (pVarVolatile && strlen(pVarVolatile->value) >= GET_PATH_MAX)
+        return errx(pCtx, -1, "%s is too long (max %u)", pszVarVolatile, GET_PATH_MAX);
+
+    /*
+     * Construct the executable path.
+     */
+#ifdef KBUILD_OS_WINDOWS
+    rc = kSubmitCalcExecutablePathW(pCtx, pWorker, wszExecutable, K_ELEMENTS(wszExecutable));
+#else
+    rc = kSubmitCalcExecutablePath(pCtx, pWorker, szExecutable, GET_PATH_MAX);
+#endif
+    if (rc == 0)
+    {
+#ifdef KBUILD_OS_WINDOWS
+        static DWORD    s_fDenyRemoteClients = ~(DWORD)0;
+        wchar_t         wszPipeName[128];
+        HANDLE          hWorkerPipe;
+        int             iProcessorGroup;
+
+# if K_ARCH_BITS == 64
+        /** @todo make it return -1 if not applicable (e.g only one group).  */
+        if (pWorker->cBits != 32)
+            iProcessorGroup = MkWinChildAllocateCpuGroup(&g_SubmitProcessorGroupAllocator);
+        else
+            iProcessorGroup = MkWinChildAllocateCpuGroup(&g_SubmitProcessorGroupAllocator32);
+# else
+        iProcessorGroup = MkWinChildAllocateCpuGroup(&g_SubmitProcessorGroupAllocator);
+# endif
+
+        /*
+         * Create the bi-directional pipe with overlapping I/O enabled.
+         */
+        if (s_fDenyRemoteClients == ~(DWORD)0)
+            s_fDenyRemoteClients = GetVersion() >= 0x60000 ? PIPE_REJECT_REMOTE_CLIENTS : 0;
+        _snwprintf(wszPipeName, sizeof(wszPipeName), L"\\\\.\\pipe\\kmk-%u-kWorker-%u-%u",
+                   GetCurrentProcessId(), g_uWorkerSeqNo++, GetTickCount());
+        hWorkerPipe = CreateNamedPipeW(wszPipeName,
+                                       PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED | FILE_FLAG_FIRST_PIPE_INSTANCE /* win2k sp2+ */,
+                                       PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT | s_fDenyRemoteClients,
+                                       1 /* cMaxInstances */,
+                                       64 /*cbOutBuffer*/,
+                                       65536 /*cbInBuffer*/,
+                                       0 /*cMsDefaultTimeout -> 50ms*/,
+                                       NULL /* pSecAttr - no inherit */);
+        if (hWorkerPipe != INVALID_HANDLE_VALUE)
+        {
+            pWorker->hPipe = CreateFileW(wszPipeName,
+                                         GENERIC_READ | GENERIC_WRITE,
+                                         0 /* dwShareMode - no sharing */,
+                                         NULL /*pSecAttr - no inherit */,
+                                         OPEN_EXISTING,
+                                         FILE_FLAG_OVERLAPPED,
+                                         NULL /*hTemplate*/);
+            if (pWorker->hPipe != INVALID_HANDLE_VALUE)
+            {
+                pWorker->OverlappedRead.hEvent = CreateEventW(NULL /*pSecAttrs - no inherit*/, TRUE /*bManualReset*/,
+                                                              TRUE /*bInitialState*/, NULL /*pwszName*/);
+                if (pWorker->OverlappedRead.hEvent != NULL)
+                {
+                    extern int          process_priority; /* main.c */
+                    wchar_t             wszCommandLine[MAX_PATH * 3 + 32];
+                    wchar_t            *pwszDst = wszCommandLine;
+                    size_t              cwcDst = K_ELEMENTS(wszCommandLine);
+                    int                 cwc;
+                    DWORD               fFlags;
+                    STARTUPINFOW        StartupInfo;
+                    PROCESS_INFORMATION ProcInfo = { NULL, NULL, 0, 0 };
+
+                    /*
+                     * Compose the command line.
+                     */
+                    cwc = _snwprintf(pwszDst, cwcDst, L"\"%s\" ", wszExecutable);
+                    assert(cwc > 0 && cwc < cwcDst);
+                    pwszDst += cwc;
+                    cwcDst  -= cwc;
+                    if (pVarVolatile && *pVarVolatile->value)
+                    {
+                        char chEnd = strchr(pVarVolatile->value, '\0')[-1];
+                        if (chEnd == '\\')
+                            cwc = _snwprintf(pwszDst, cwcDst, L" --volatile \"%S.\"", pVarVolatile->value);
+                        else
+                            cwc = _snwprintf(pwszDst, cwcDst, L" --volatile \"%S\"", pVarVolatile->value);
+                        assert(cwc > 0 && cwc < cwcDst);
+                        pwszDst += cwc;
+                        cwcDst  -= cwc;
+                    }
+                    if (iProcessorGroup >= 0)
+                    {
+                        cwc = _snwprintf(pwszDst, cwcDst, L" --group %d", iProcessorGroup);
+                        assert(cwc > 0 && cwc < cwcDst);
+                        pwszDst += cwc;
+                        cwcDst  -= cwc;
+                    }
+                    *pwszDst = '\0';
+
+                    /*
+                     * Fill in the startup information.
+                     */
+                    memset(&StartupInfo, 0, sizeof(StartupInfo));
+                    StartupInfo.cb = sizeof(StartupInfo);
+                    GetStartupInfoW(&StartupInfo);
+                    StartupInfo.dwFlags    &= ~STARTF_USESTDHANDLES;
+                    StartupInfo.lpReserved2 = NULL;
+                    StartupInfo.cbReserved2 = 0;
+
+                    /*
+                     * Flags and such.
+                     */
+                    fFlags = CREATE_SUSPENDED;
+                    switch (process_priority)
+                    {
+                        case 1: fFlags |= CREATE_SUSPENDED | IDLE_PRIORITY_CLASS; break;
+                        case 2: fFlags |= CREATE_SUSPENDED | BELOW_NORMAL_PRIORITY_CLASS; break;
+                        case 3: fFlags |= CREATE_SUSPENDED | NORMAL_PRIORITY_CLASS; break;
+                        case 4: fFlags |= CREATE_SUSPENDED | HIGH_PRIORITY_CLASS; break;
+                        case 5: fFlags |= CREATE_SUSPENDED | REALTIME_PRIORITY_CLASS; break;
+                    }
+
+                    /*
+                     * Create the worker process.
+                     */
+                    if (CreateProcessW(wszExecutable, wszCommandLine, NULL /*pProcSecAttr*/, NULL /*pThreadSecAttr*/,
+                                       FALSE /*fInheritHandles*/, fFlags, NULL /*pwszzEnvironment*/,
+                                       NULL /*pwszCwd*/, &StartupInfo, &ProcInfo))
+                    {
+                        char   szErrMsg[256];
+                        BOOL   afReplace[3] = { TRUE, FALSE, FALSE };
+                        HANDLE ahReplace[3] = { hWorkerPipe, INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE };
+                        if (pWorker->pStdOut)
+                        {
+                            afReplace[1] = TRUE;
+                            afReplace[2] = TRUE;
+                            ahReplace[1] = pWorker->pStdOut->hPipeChild;
+                            ahReplace[2] = pWorker->pStdErr->hPipeChild;
+                        }
+
+                        rc = nt_child_inject_standard_handles(ProcInfo.hProcess, afReplace, ahReplace, szErrMsg, sizeof(szErrMsg));
+                        if (rc == 0)
+                        {
+                            BOOL fRet;
+                            switch (process_priority)
+                            {
+                                case 1: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_IDLE); break;
+                                case 2: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_BELOW_NORMAL); break;
+                                case 3: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_NORMAL); break;
+                                case 4: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_HIGHEST); break;
+                                case 5: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_TIME_CRITICAL); break;
+                                default: fRet = TRUE;
+                            }
+                            if (!fRet)
+                                warnx(pCtx, "warning: failed to set kWorker thread priority: %u\n", GetLastError());
+
+                            if (iProcessorGroup >= 0 && g_pfnSetThreadGroupAffinity)
+                            {
+                                GROUP_AFFINITY OldAff = { 0,                                                    0, 0, 0, 0 };
+                                GROUP_AFFINITY NewAff = { 0 /* == all active apparently */, (WORD)iProcessorGroup, 0, 0, 0 };
+                                if (!g_pfnSetThreadGroupAffinity(ProcInfo.hThread, &NewAff, &OldAff))
+                                    warnx(pCtx, "warning: Failed to set processor group to %d: %u\n",
+                                          iProcessorGroup, GetLastError());
+                            }
+
+                            /*
+                             * Now, we just need to resume the thread.
+                             */
+                            if (ResumeThread(ProcInfo.hThread))
+                            {
+                                CloseHandle(hWorkerPipe);
+                                CloseHandle(ProcInfo.hThread);
+                                pWorker->pid      = ProcInfo.dwProcessId;
+                                pWorker->hProcess = ProcInfo.hProcess;
+                                if (cVerbosity > 0)
+                                    warnx(pCtx, "created %d bit worker %d\n", pWorker->cBits, pWorker->pid);
+                                return 0;
+                            }
+
+                            /*
+                             * Failed, bail out.
+                             */
+                            rc = errx(pCtx, -3, "ResumeThread failed: %u", GetLastError());
+                        }
+                        else
+                            rc = errx(pCtx, -3, "%s", szErrMsg);
+                        TerminateProcess(ProcInfo.hProcess, 1234);
+                        CloseHandle(ProcInfo.hThread);
+                        CloseHandle(ProcInfo.hProcess);
+                    }
+                    else
+                        rc = errx(pCtx, -2, "CreateProcessW failed: %u (exe=%S cmdline=%S)",
+                                  GetLastError(), wszExecutable, wszCommandLine);
+                    CloseHandle(pWorker->OverlappedRead.hEvent);
+                    pWorker->OverlappedRead.hEvent = INVALID_HANDLE_VALUE;
+                }
+                else
+                    rc = errx(pCtx, -1, "CreateEventW failed: %u", GetLastError());
+                CloseHandle(pWorker->hPipe);
+                pWorker->hPipe = INVALID_HANDLE_VALUE;
+            }
+            else
+                rc = errx(pCtx, -1, "Opening named pipe failed: %u", GetLastError());
+            CloseHandle(hWorkerPipe);
+        }
+        else
+            rc = errx(pCtx, -1, "CreateNamedPipeW failed: %u", GetLastError());
+
+#else
+        /*
+         * Create a socket pair.
+         */
+        int aiPair[2] = { -1, -1 };
+        if (socketpair(AF_LOCAL, SOCK_STREAM, 0, aiPair) == 0)
+        {
+            pWorker->fdSocket = aiPair[1];
+
+            rc = -1;
+        }
+        else
+            rc = err(pCtx, -1, "socketpair");
+#endif
+    }
+    else
+        rc = errx(pCtx, -1, "KBUILD_BIN_PATH is too long");
+    return rc;
+}
+
+
+/**
+ * Selects an idle worker or spawns a new one.
+ *
+ * @returns Pointer to the selected worker instance.  NULL on error.
+ * @param   pCtx                The command execution context.
+ * @param   pWorker             The idle worker instance to respawn.
+ *                              On failure this will be freed!
+ * @param   cBitsWorker         The worker bitness - 64 or 32.
+ */
+static int kSubmitRespawnWorker(PKMKBUILTINCTX pCtx, PWORKERINSTANCE pWorker, int cVerbosity)
+{
+    /*
+     * Clean up after the old worker.
+     */
+#ifdef KBUILD_OS_WINDOWS
+    DWORD   rcWait;
+
+    /* Close the pipe handle first, breaking the pipe in case it's not already
+       busted up.  Close the event semaphore too before waiting for the process. */
+    if (pWorker->hPipe != INVALID_HANDLE_VALUE)
+    {
+        if (!CloseHandle(pWorker->hPipe))
+            warnx(pCtx, "CloseHandle(pWorker->hPipe): %u", GetLastError());
+        pWorker->hPipe = INVALID_HANDLE_VALUE;
+    }
+
+    if (!CloseHandle(pWorker->OverlappedRead.hEvent))
+        warnx(pCtx, "CloseHandle(pWorker->OverlappedRead.hEvent): %u", GetLastError());
+    pWorker->OverlappedRead.hEvent = INVALID_HANDLE_VALUE;
+
+    if (pWorker->pStdOut)
+        MkWinChildcareWorkerDrainPipes(NULL, pWorker->pStdOut, pWorker->pStdErr);
+
+    /* It's probably shutdown already, if not give it 10 milliseconds before
+       we terminate it forcefully. */
+    rcWait = WaitForSingleObject(pWorker->hProcess, 10);
+    if (rcWait != WAIT_OBJECT_0)
+    {
+        BOOL fRc = TerminateProcess(pWorker->hProcess, 127);
+
+        if (pWorker->pStdOut)
+            MkWinChildcareWorkerDrainPipes(NULL, pWorker->pStdOut, pWorker->pStdErr);
+
+        rcWait = WaitForSingleObject(pWorker->hProcess, 100);
+        if (rcWait != WAIT_OBJECT_0)
+            warnx(pCtx, "WaitForSingleObject returns %u (and TerminateProcess %d)", rcWait, fRc);
+    }
+
+    if (pWorker->pStdOut)
+        MkWinChildcareWorkerDrainPipes(NULL, pWorker->pStdOut, pWorker->pStdErr);
+
+    if (!CloseHandle(pWorker->hProcess))
+        warnx(pCtx, "CloseHandle(pWorker->hProcess): %u", GetLastError());
+    pWorker->hProcess = INVALID_HANDLE_VALUE;
+
+#else
+    pid_t   pidWait;
+    int     rc;
+
+    if (pWorker->fdSocket != -1)
+    {
+        if (close(pWorker->fdSocket) != 0)
+            warn(pCtx, "close(pWorker->fdSocket)");
+        pWorker->fdSocket = -1;
+    }
+
+    kill(pWorker->pid, SIGTERM);
+    pidWait = waitpid(pWorker->pid, &rc, 0);
+    if (pidWait != pWorker->pid)
+        warn(pCtx, "waitpid(pWorker->pid,,0)");
+#endif
+
+    /*
+     * Unlink it from the hash table.
+     */
+    kSubmitPidHashRemove(pWorker);
+
+    /*
+     * Respawn it.
+     */
+    if (kSubmitSpawnWorker(pCtx, pWorker, cVerbosity) == 0)
+    {
+        /*
+         * Insert it into the process ID hash table and idle list.
+         */
+        size_t idxHash = KWORKER_PID_HASH(pWorker->pid);
+        pWorker->pNextPidHash = g_apPidHash[idxHash];
+        g_apPidHash[idxHash] = pWorker;
+        return 0;
+    }
+
+    kSubmitListUnlink(&g_IdleList, pWorker);
+    free(pWorker);
+    return -1;
+}
+
+
+/**
+ * Selects an idle worker or spawns a new one.
+ *
+ * @returns Pointer to the selected worker instance.  NULL on error.
+ * @param   cBitsWorker         The worker bitness - 64 or 32.
+ */
+static PWORKERINSTANCE kSubmitSelectWorkSpawnNewIfNecessary(PKMKBUILTINCTX pCtx, unsigned cBitsWorker, int cVerbosity)
+{
+    /*
+     * Lookup up an idle worker.
+     */
+    PWORKERINSTANCE pWorker = g_IdleList.pHead;
+    while (pWorker)
+    {
+        if (pWorker->cBits == cBitsWorker)
+            return pWorker;
+        pWorker = pWorker->pNext;
+    }
+
+    /*
+     * Create a new worker instance.
+     */
+    pWorker = (PWORKERINSTANCE)xcalloc(sizeof(*pWorker));
+    pWorker->cBits = cBitsWorker;
+#if defined(CONFIG_NEW_WIN_CHILDREN) && defined(KBUILD_OS_WINDOWS)
+    if (output_sync != OUTPUT_SYNC_NONE)
+    {
+        pWorker->pStdOut = MkWinChildcareCreateWorkerPipe(1, g_uWorkerSeqNo << 1);
+        pWorker->pStdErr = MkWinChildcareCreateWorkerPipe(2, g_uWorkerSeqNo << 1);
+    }
+    if (   output_sync == OUTPUT_SYNC_NONE
+        || (   pWorker->pStdOut != NULL
+            && pWorker->pStdErr != NULL))
+#endif
+    {
+        if (kSubmitSpawnWorker(pCtx, pWorker, cVerbosity) == 0)
+        {
+            /*
+             * Insert it into the process ID hash table and idle list.
+             */
+            size_t idxHash = KWORKER_PID_HASH(pWorker->pid);
+            pWorker->pNextPidHash = g_apPidHash[idxHash];
+            g_apPidHash[idxHash] = pWorker;
+
+            kSubmitListAppend(&g_IdleList, pWorker);
+            return pWorker;
+        }
+    }
+#if defined(CONFIG_NEW_WIN_CHILDREN) && defined(KBUILD_OS_WINDOWS)
+    if (pWorker->pStdErr)
+        MkWinChildcareDeleteWorkerPipe(pWorker->pStdErr);
+    if (pWorker->pStdOut)
+        MkWinChildcareDeleteWorkerPipe(pWorker->pStdOut);
+#endif
+
+    free(pWorker);
+    return NULL;
+}
+
+
+/**
+ * Composes a JOB mesage for a worker.
+ *
+ * @returns Pointer to the message.
+ * @param   pszExecutable       The executable to run.
+ * @param   papszArgs           The argument vector.
+ * @param   papszEnvVars        The environment vector.
+ * @param   pszCwd              The current directory.
+ * @param   fWatcomBrainDamage  The wcc/wcc386 workaround.
+ * @param   fNoPchCaching       Whether to disable precompiled header caching.
+ * @param   pszSpecialEnv       Environment variable (name=value) subject to
+ *                              special expansion in kWorker.  NULL if none.
+ * @param   papszPostCmdArgs    The post command and it's arguments.
+ * @param   cPostCmdArgs        Number of post command argument, including the
+ *                              command.  Zero if no post command scheduled.
+ * @param   pcbMsg              Where to return the message length.
+ */
+static void *kSubmitComposeJobMessage(const char *pszExecutable, char **papszArgs, char **papszEnvVars,
+                                      const char *pszCwd, int fWatcomBrainDamage, int fNoPchCaching, const char *pszSpecialEnv,
+                                      char **papszPostCmdArgs, uint32_t cPostCmdArgs, uint32_t *pcbMsg)
+{
+    size_t   cbTmp;
+    size_t   cbSpecialEnv;
+    uint32_t i;
+    uint32_t cbMsg;
+    uint32_t cArgs;
+    uint32_t cEnvVars;
+    uint8_t *pbMsg;
+    uint8_t *pbCursor;
+
+    /*
+     * Adjust input.
+     */
+    if (!pszExecutable)
+        pszExecutable = papszArgs[0];
+
+    /*
+     * Calculate the message length first.
+     */
+    cbMsg  = sizeof(cbMsg);
+    cbMsg += sizeof("JOB");
+    cbMsg += strlen(pszExecutable) + 1;
+    cbMsg += strlen(pszCwd) + 1;
+
+    cbMsg += sizeof(cArgs);
+    for (i = 0; papszArgs[i] != NULL; i++)
+        cbMsg += 1 + strlen(papszArgs[i]) + 1;
+    cArgs  = i;
+
+    cbMsg += sizeof(cArgs);
+    for (i = 0; papszEnvVars[i] != NULL; i++)
+        cbMsg += strlen(papszEnvVars[i]) + 1;
+    cEnvVars = i;
+
+    cbMsg += 1; /* fWatcomBrainDamage */
+    cbMsg += 1; /* fNoPchCaching */
+
+    cbSpecialEnv = pszSpecialEnv ? strchr(pszSpecialEnv, '=') - pszSpecialEnv : 0;
+    cbMsg += cbSpecialEnv + 1;
+
+    cbMsg += sizeof(cPostCmdArgs);
+    for (i = 0; i < cPostCmdArgs; i++)
+        cbMsg += strlen(papszPostCmdArgs[i]) + 1;
+
+    /*
+     * Compose the message.
+     */
+    pbMsg = pbCursor = xmalloc(cbMsg);
+
+    /* header */
+    memcpy(pbCursor, &cbMsg, sizeof(cbMsg));
+    pbCursor += sizeof(cbMsg);
+    memcpy(pbCursor, "JOB", sizeof("JOB"));
+    pbCursor += sizeof("JOB");
+
+    /* executable. */
+    cbTmp = strlen(pszExecutable) + 1;
+    memcpy(pbCursor, pszExecutable, cbTmp);
+    pbCursor += cbTmp;
+
+    /* cwd */
+    cbTmp = strlen(pszCwd) + 1;
+    memcpy(pbCursor, pszCwd, cbTmp);
+    pbCursor += cbTmp;
+
+    /* arguments */
+    memcpy(pbCursor, &cArgs, sizeof(cArgs));
+    pbCursor += sizeof(cArgs);
+    for (i = 0; papszArgs[i] != NULL; i++)
+    {
+        *pbCursor++ = 0; /* Argument expansion flags (MSC, EMX). */
+        cbTmp = strlen(papszArgs[i]) + 1;
+        memcpy(pbCursor, papszArgs[i], cbTmp);
+        pbCursor += cbTmp;
+    }
+    assert(i == cArgs);
+
+    /* environment */
+    memcpy(pbCursor, &cEnvVars, sizeof(cEnvVars));
+    pbCursor += sizeof(cEnvVars);
+    for (i = 0; papszEnvVars[i] != NULL; i++)
+    {
+        cbTmp = strlen(papszEnvVars[i]) + 1;
+        memcpy(pbCursor, papszEnvVars[i], cbTmp);
+        pbCursor += cbTmp;
+    }
+    assert(i == cEnvVars);
+
+    /* flags */
+    *pbCursor++ = fWatcomBrainDamage != 0;
+    *pbCursor++ = fNoPchCaching != 0;
+
+    /* Special environment variable name. */
+    memcpy(pbCursor, pszSpecialEnv, cbSpecialEnv);
+    pbCursor += cbSpecialEnv;
+    *pbCursor++ = '\0';
+
+    /* post command */
+    memcpy(pbCursor, &cPostCmdArgs, sizeof(cPostCmdArgs));
+    pbCursor += sizeof(cPostCmdArgs);
+    for (i = 0; i < cPostCmdArgs; i++)
+    {
+        cbTmp = strlen(papszPostCmdArgs[i]) + 1;
+        memcpy(pbCursor, papszPostCmdArgs[i], cbTmp);
+        pbCursor += cbTmp;
+    }
+    assert(i == cPostCmdArgs);
+
+    assert(pbCursor - pbMsg == (size_t)cbMsg);
+
+    /*
+     * Done.
+     */
+    *pcbMsg = cbMsg;
+    return pbMsg;
+}
+
+
+/**
+ * Sends the job message to the given worker, respawning the worker if
+ * necessary.
+ *
+ * @returns 0 on success, non-zero on failure.
+ *
+ * @param   pCtx                The command execution context.
+ * @param   pWorker             The work to send the request to.  The worker is
+ *                              on the idle list.
+ * @param   pvMsg               The message to send.
+ * @param   cbMsg               The size of the message.
+ * @param   fNoRespawning       Set if
+ * @param   cVerbosity          The verbosity level.
+ */
+static int kSubmitSendJobMessage(PKMKBUILTINCTX pCtx, PWORKERINSTANCE pWorker, void const *pvMsg, uint32_t cbMsg,
+                                 int fNoRespawning, int cVerbosity)
+{
+    int cRetries;
+
+    /*
+     * Respawn the worker if it stopped by itself and we closed the pipe already.
+     */
+#ifdef KBUILD_OS_WINDOWS
+    if (pWorker->hPipe == INVALID_HANDLE_VALUE)
+#else
+    if (pWorker->fdSocket == -1)
+#endif
+    {
+        if (!fNoRespawning)
+        {
+            if (cVerbosity > 0)
+                warnx(pCtx, "Respawning worker (#1)...\n");
+            if (kSubmitRespawnWorker(pCtx, pWorker, cVerbosity) != 0)
+                return 2;
+        }
+
+    }
+
+    /*
+     * Restart-on-broken-pipe loop. Necessary?
+     */
+    for (cRetries = !fNoRespawning ? 1 : 0; ; cRetries--)
+    {
+        /*
+         * Try write the message.
+         */
+        uint32_t        cbLeft = cbMsg;
+        uint8_t const  *pbLeft = (uint8_t const  *)pvMsg;
+#ifdef KBUILD_OS_WINDOWS
+        DWORD           dwErr;
+        DWORD           cbWritten;
+        while (WriteFile(pWorker->hPipe, pbLeft, cbLeft, &cbWritten, NULL /*pOverlapped*/))
+        {
+            assert(cbWritten <= cbLeft);
+            cbLeft -= cbWritten;
+            if (!cbLeft)
+                return 0;
+
+            /* This scenario shouldn't really ever happen. But just in case... */
+            pbLeft += cbWritten;
+        }
+        dwErr = GetLastError();
+        if (   (   dwErr != ERROR_BROKEN_PIPE
+                && dwErr != ERROR_NO_DATA)
+            || cRetries <= 0)
+            return errx(pCtx, 1, "Error writing to worker: %u", dwErr);
+#else
+        ssize_t cbWritten
+        while ((cbWritten = write(pWorker->fdSocket, pbLeft, cbLeft)) >= 0)
+        {
+            assert(cbWritten <= cbLeft);
+            cbLeft -= cbWritten;
+            if (!cbLeft)
+                return 0;
+
+            pbLeft += cbWritten;
+        }
+        if (  (   errno != EPIPE
+               && errno != ENOTCONN
+               && errno != ECONNRESET))
+            || cRetries <= 0)
+            return err(pCtx, 1, "Error writing to worker");
+# error "later"
+#endif
+
+        /*
+         * Broken connection. Try respawn the worker.
+         */
+        if (cVerbosity > 0)
+            warnx(pCtx, "Respawning worker (#2)...\n");
+        if (kSubmitRespawnWorker(pCtx, pWorker, cVerbosity) != 0)
+            return 2;
+    }
+}
+
+
+/**
+ * Closes the connection on a worker that said it is going to exit now.
+ *
+ * This is a way of dealing with imperfect resource management in the worker, it
+ * will monitor it a little and trigger a respawn when it looks bad.
+ *
+ * This function just closes the pipe / socket connection to the worker.  The
+ * kSubmitSendJobMessage function will see this a trigger a respawn the next
+ * time the worker is engaged.  This will usually mean there's a little delay in
+ * which the process can terminate without us having to actively wait for it.
+ *
+ * @param   pCtx                The command execution context.
+ * @param   pWorker             The worker instance.
+ */
+static void kSubmitCloseConnectOnExitingWorker(PKMKBUILTINCTX pCtx, PWORKERINSTANCE pWorker)
+{
+#ifdef KBUILD_OS_WINDOWS
+    if (!CloseHandle(pWorker->hPipe))
+        warnx(pCtx, "CloseHandle(pWorker->hPipe): %u", GetLastError());
+    pWorker->hPipe = INVALID_HANDLE_VALUE;
+#else
+    if (close(pWorker->fdSocket) != 0)
+        warn(pCtx, "close(pWorker->fdSocket)");
+    pWorker->fdSocket = -1;
+#endif
+}
+
+
+#ifdef KBUILD_OS_WINDOWS
+
+/**
+ * Handles read failure.
+ *
+ * @returns Exit code.
+ * @param   pCtx                The command execution context.
+ * @param   pWorker             The worker instance.
+ * @param   dwErr               The error code.
+ * @param   pszWhere            Where it failed.
+ */
+static int kSubmitWinReadFailed(PKMKBUILTINCTX pCtx, PWORKERINSTANCE pWorker, DWORD dwErr, const char *pszWhere)
+{
+    DWORD dwExitCode;
+
+    if (pWorker->cbResultRead == 0)
+        errx(pCtx, 1, "%s/ReadFile failed: %u", pszWhere, dwErr);
+    else
+        errx(pCtx, 1, "%s/ReadFile failed: %u (read %u bytes)", pszWhere, dwErr, pWorker->cbResultRead);
+    assert(dwErr != 0);
+
+    /* Complete the result. */
+    pWorker->Result.s.rcExit         = 127;
+    pWorker->Result.s.bWorkerExiting = 1;
+    pWorker->cbResultRead            = sizeof(pWorker->Result);
+
+    if (GetExitCodeProcess(pWorker->hProcess, &dwExitCode))
+    {
+        if (dwExitCode != 0)
+            pWorker->Result.s.rcExit = dwExitCode;
+    }
+
+    return dwErr != 0 ? (int)(dwErr & 0x7fffffff) : 0x7fffffff;
+
+}
+
+
+/**
+ * Used by
+ * @returns 0 if we got the whole result, -1 if I/O is pending, and windows last
+ *          error on ReadFile failure.
+ * @param   pCtx                The command execution context.
+ * @param   pWorker             The worker instance.
+ */
+static int kSubmitReadMoreResultWin(PKMKBUILTINCTX pCtx, PWORKERINSTANCE pWorker, const char *pszWhere)
+{
+    /*
+     * Set up the result read, telling the sub_proc.c unit about it.
+     */
+    while (pWorker->cbResultRead < sizeof(pWorker->Result))
+    {
+        DWORD cbRead = 0;
+
+        BOOL fRc = ResetEvent(pWorker->OverlappedRead.hEvent);
+        assert(fRc); (void)fRc;
+
+        pWorker->OverlappedRead.Offset     = 0;
+        pWorker->OverlappedRead.OffsetHigh = 0;
+
+        if (!ReadFile(pWorker->hPipe, &pWorker->Result.ab[pWorker->cbResultRead],
+                     sizeof(pWorker->Result) - pWorker->cbResultRead,
+                     &cbRead,
+                     &pWorker->OverlappedRead))
+        {
+            DWORD dwErr = GetLastError();
+            if (dwErr == ERROR_IO_PENDING)
+                return -1;
+            return kSubmitWinReadFailed(pCtx, pWorker, dwErr, pszWhere);
+        }
+
+        pWorker->cbResultRead += cbRead;
+        assert(pWorker->cbResultRead <= sizeof(pWorker->Result));
+    }
+    return 0;
+}
+
+#endif /* KBUILD_OS_WINDOWS */
+
+
+/**
+ * Adds the given message to the history.
+ *
+ * @returns Pointer to old message, or NULL if no old msg to free.
+ * @param   pWorker             The worker instance.
+ * @param   pvMsg               The message.
+ * @param   cbMsg               The message size.
+ */
+static void *kSubmitUpdateHistory(PWORKERINSTANCE pWorker, void *pvMsg, size_t cbMsg)
+{
+    unsigned iHistory = pWorker->iHistory % K_ELEMENTS(pWorker->aHistory);
+    void    *pvRet;
+    pWorker->iHistory++;
+    pvRet = pWorker->aHistory[iHistory].pvMsg;
+    pWorker->aHistory[iHistory].pvMsg = pvMsg;
+    pWorker->aHistory[iHistory].cbMsg = cbMsg;
+    return pvRet;
+}
+
+typedef struct HISTORYDUMPBUF
+{
+    char           *pszBuf;
+    size_t          cbBuf;
+    size_t          off;
+    PKMKBUILTINCTX  pCtx;
+} HISTORYDUMPBUF;
+
+
+static void kSubmitDumpHistoryWrite(HISTORYDUMPBUF *pBuf, const char *pch, size_t cch)
+{
+    if (pBuf->off + cch >= pBuf->cbBuf)
+    {
+        size_t cbNew = pBuf->cbBuf ? pBuf->cbBuf * 2 : 65536;
+        while (pBuf->off + cch >= cbNew)
+            cbNew *= 2;
+        pBuf->pszBuf = (char *)xrealloc(pBuf->pszBuf, cbNew);
+        pBuf->cbBuf = cbNew;
+    }
+
+    memcpy(&pBuf->pszBuf[pBuf->off], pch, cch);
+    pBuf->off += cch;
+    pBuf->pszBuf[pBuf->off] = '\0';
+}
+
+static void kSubmitDumpHistoryPrintf(HISTORYDUMPBUF *pBuf, const char *pszFormat, ...)
+{
+    char szTmp[32];
+    va_list va;
+    va_start(va, pszFormat);
+    for (;;)
+    {
+        const char *pszPct = strchr(pszFormat, '%');
+        if (!pszPct)
+        {
+            kSubmitDumpHistoryWrite(pBuf, pszFormat, strlen(pszFormat));
+            return;
+        }
+        if (pszPct != pszFormat)
+        {
+            kSubmitDumpHistoryWrite(pBuf, pszFormat, pszPct - pszFormat);
+            pszFormat = pszPct;
+        }
+        pszFormat++;
+        switch (*pszFormat++)
+        {
+            case 's':
+            {
+                const char * const psz = va_arg(va, const char *);
+                size_t const       cch = strlen(psz);
+                if (cch == 0 || memchr(psz, '\'', cch))
+                {
+                    kSubmitDumpHistoryWrite(pBuf, TUPLE("\"")); /** @todo what if there are '"' in the string? */
+                    kSubmitDumpHistoryWrite(pBuf, psz, cch);
+                    kSubmitDumpHistoryWrite(pBuf, TUPLE("\""));
+                }
+                else if (   !memchr(psz, ' ', cch)
+                         && !memchr(psz, '\\', cch)
+                         && !memchr(psz, '\t', cch)
+                         && !memchr(psz, '\n', cch)
+                         && !memchr(psz, '\r', cch)
+                         && !memchr(psz, '&', cch)
+                         && !memchr(psz, ';', cch)
+                         && !memchr(psz, '|', cch))
+                    kSubmitDumpHistoryWrite(pBuf, psz, cch);
+                else
+                {
+                    kSubmitDumpHistoryWrite(pBuf, TUPLE("'"));
+                    kSubmitDumpHistoryWrite(pBuf, psz, strlen(psz));
+                    kSubmitDumpHistoryWrite(pBuf, TUPLE("'"));
+                }
+                break;
+            }
+
+            case 'd':
+            {
+                int iValue = va_arg(va, int);
+                kSubmitDumpHistoryWrite(pBuf, szTmp, snprintf(szTmp, sizeof(szTmp), "%d", iValue));
+                break;
+            }
+
+            case 'u':
+            {
+                unsigned uValue = va_arg(va, unsigned);
+                kSubmitDumpHistoryWrite(pBuf, szTmp, snprintf(szTmp, sizeof(szTmp), "%u", uValue));
+                break;
+            }
+
+            case '%':
+                kSubmitDumpHistoryWrite(pBuf, "%s", 1);
+                break;
+
+            default:
+                assert(0);
+        }
+    }
+    va_end(va);
+}
+
+static void kSubmitDumpHistoryFlush(HISTORYDUMPBUF *pBuf)
+{
+    if (pBuf->off > 0)
+        output_write_text(pBuf->pCtx->pOut, 1, pBuf->pszBuf, pBuf->off);
+    pBuf->off = 0;
+}
+
+/**
+ * Dumps the history for this worker to stderr in the given context.
+ *
+ * @param   pCtx                The command execution context. (Typically not a
+ *                              real context.)
+ * @param   pWorker             The worker instance.
+ */
+static void kSubmitDumpHistory(PKMKBUILTINCTX pCtx, PWORKERINSTANCE pWorker)
+{
+    HISTORYDUMPBUF  Buf      = { NULL, 0, 0, pCtx };
+    int             iHistory = pWorker->iHistory;
+    unsigned        cDumped  = 0;
+
+    while (cDumped < K_ELEMENTS(pWorker->aHistory) && iHistory > 0)
+    {
+        unsigned const  idx    = (unsigned)--iHistory % K_ELEMENTS(pWorker->aHistory);
+        const char     *pszMsg = (const char *)pWorker->aHistory[idx].pvMsg;
+        ssize_t         cbMsg  = pWorker->aHistory[idx].cbMsg;
+        const char     *pszExe;
+        const char     *pszCwd;
+        uint32_t        i;
+        uint32_t        cArgs;
+        const char     *pszArgs;
+        size_t          cbArgs;
+        uint32_t        cEnvVars;
+        const char     *pszEnvVars;
+        size_t          cbEnvVars;
+        const char     *pszSpecialEnv;
+        char            fNoPchCaching;
+        char            fWatcomBrainDamage;
+        uint32_t        cPostArgs;
+        const char     *pszPostArgs;
+        size_t          cbPostArgs;
+
+        cDumped++;
+        if (!pszMsg || !cbMsg)
+            break;
+
+#define SKIP_BYTES(a_cbSkip)    do { pszMsg += (a_cbSkip); cbMsg -= (a_cbSkip); } while (0)
+#define SKIP_STR()              do { size_t const cbToSkip = strlen(pszMsg) + 1; SKIP_BYTES(cbToSkip); } while (0)
+#define SKIP_STRING_ARRAY(a_cStrings, a_cbPreable) do { \
+        for (i = 0; i < (a_cStrings) && cbMsg > 0; i++) { \
+            size_t const cbToSkip = (a_cbPreable) + strlen(pszMsg + (a_cbPreable)) + 1; \
+            SKIP_BYTES(cbToSkip); \
+        } } while (0)
+
+        /* Decode it: */
+        SKIP_BYTES(sizeof(uint32_t) + sizeof("JOB"));
+        pszExe = pszMsg;
+        SKIP_STR();
+        pszCwd = pszMsg;
+        SKIP_STR();
+
+        cArgs  = *(uint32_t *)pszMsg;
+        SKIP_BYTES(sizeof(uint32_t));
+        pszArgs = pszMsg;
+        SKIP_STRING_ARRAY(cArgs, 1 /*fbFlags*/);
+        cbArgs = pszMsg - pszArgs;
+
+        cEnvVars = *(uint32_t *)pszMsg;
+        SKIP_BYTES(sizeof(uint32_t));
+        pszEnvVars = pszMsg;
+        SKIP_STRING_ARRAY(cEnvVars, 0);
+        cbEnvVars = pszMsg - pszEnvVars;
+
+        fWatcomBrainDamage = pszMsg[0] != '\0';
+        fNoPchCaching = pszMsg[1] != '\0';
+        SKIP_BYTES(2);
+
+        pszSpecialEnv = pszMsg;
+        SKIP_STR();
+
+        cPostArgs = *(uint32_t *)pszMsg;
+        SKIP_BYTES(sizeof(uint32_t));
+        pszPostArgs = pszMsg;
+        SKIP_STRING_ARRAY(cPostArgs, 0);
+        cbPostArgs = pszMsg - pszPostArgs;
+
+        /* Produce parseable output: */
+        kSubmitDumpHistoryPrintf(&Buf, "kWorker %u/%u:\n\tkSubmit", (long)pWorker->pid, iHistory, pszExe);
+        if (fNoPchCaching)
+            kSubmitDumpHistoryWrite(&Buf, TUPLE(" --no-pch-caching"));
+        if (fWatcomBrainDamage)
+            kSubmitDumpHistoryWrite(&Buf, TUPLE(" --watcom-brain-damage"));
+        if (pszSpecialEnv)
+            kSubmitDumpHistoryPrintf(&Buf, " --special-env %s", pszSpecialEnv);
+        kSubmitDumpHistoryPrintf(&Buf, " --chdir %s \\\n", pszCwd);
+
+        pszMsg = pszEnvVars;
+        cbMsg  = cbEnvVars;
+        for (i = 0; i < cEnvVars && cbMsg > 0; i++)
+        {
+            kSubmitDumpHistoryPrintf(&Buf, "\t--putenv %s \\\n", pszMsg);
+            SKIP_STR();
+        }
+
+        if (cPostArgs > 0)
+        {
+            kSubmitDumpHistoryWrite(&Buf, TUPLE("\t--post-cmd "));
+            pszMsg = pszPostArgs;
+            cbMsg  = cbPostArgs;
+            for (i = 0; i < cPostArgs && cbMsg > 0; i++)
+            {
+                kSubmitDumpHistoryPrintf(&Buf, " %s", pszMsg);
+                SKIP_STR();
+            }
+            kSubmitDumpHistoryWrite(&Buf, TUPLE(" \\\n"));
+        }
+        kSubmitDumpHistoryWrite(&Buf, TUPLE("\t-- \\\n"));
+
+        pszMsg = pszArgs;
+        cbMsg  = cbArgs;
+        for (i = 0; i < cArgs && cbMsg > 0; i++)
+        {
+            SKIP_BYTES(1);
+            kSubmitDumpHistoryPrintf(&Buf, i + 1 < cArgs ? "\t%s \\\n" : "\t%s\n", pszMsg);
+            SKIP_STR();
+        }
+
+#undef SKIP_BYTES
+#undef SKIP_STR
+#undef SKIP_STRING_ARRAY
+    }
+
+    kSubmitDumpHistoryFlush(&Buf);
+    free(Buf.pszBuf);
+}
+
+
+/**
+ * Marks the worker active.
+ *
+ * On windows this involves setting up the async result read and telling
+ * sub_proc.c about the process.
+ *
+ * @returns Exit code.
+ * @param   pCtx                The command execution context.
+ * @param   pWorker             The worker instance to mark as active.
+ * @param   cVerbosity          The verbosity level.
+ * @param   pChild              The kmk child to associate the job with.
+ * @param   pPidSpawned         If @a *pPidSpawned is non-zero if the child is
+ *                              running, otherwise the worker is already done
+ *                              and we've returned the exit code of the job.
+ */
+static int kSubmitMarkActive(PKMKBUILTINCTX pCtx, PWORKERINSTANCE pWorker, int cVerbosity, struct child *pChild, pid_t *pPidSpawned)
+{
+#ifdef KBUILD_OS_WINDOWS
+    int rc;
+#endif
+
+    pWorker->cbResultRead = 0;
+
+#ifdef KBUILD_OS_WINDOWS
+    /*
+     * Setup the async result read on windows.  If we're slow and the worker
+     * very fast, this may actually get the result immediately.
+     */
+l_again:
+    rc = kSubmitReadMoreResultWin(pCtx, pWorker, "kSubmitMarkActive");
+    if (rc == -1)
+    {
+# ifndef CONFIG_NEW_WIN_CHILDREN
+        if (process_kmk_register_submit(pWorker->OverlappedRead.hEvent, (intptr_t)pWorker, pPidSpawned) == 0)
+        { /* likely */ }
+        else
+        {
+            /* We need to do the waiting here because sub_proc.c has too much to do. */
+            warnx(pCtx, "Too many processes for sub_proc.c to handle!");
+            WaitForSingleObject(pWorker->OverlappedRead.hEvent, INFINITE);
+            goto l_again;
+        }
+# else
+        if (MkWinChildCreateSubmit((intptr_t)pWorker->OverlappedRead.hEvent, pWorker,
+                                   pWorker->pStdOut, pWorker->pStdErr, pChild, pPidSpawned) == 0)
+        { /* likely */ }
+        else
+        {
+            /* We need to do the waiting here because sub_proc.c has too much to do. */
+            warnx(pCtx, "MkWinChildCreateSubmit failed!");
+            WaitForSingleObject(pWorker->OverlappedRead.hEvent, INFINITE);
+            goto l_again;
+        }
+# endif
+    }
+    else
+    {
+        assert(rc == 0 || pWorker->Result.s.rcExit != 0);
+        if (pWorker->Result.s.bWorkerExiting)
+            kSubmitCloseConnectOnExitingWorker(pCtx, pWorker);
+        if (pWorker->Result.s.rcExit && 1)
+            kSubmitDumpHistory(pCtx, pWorker);
+        *pPidSpawned = 0;
+        return pWorker->Result.s.rcExit;
+    }
+#endif
+
+    /*
+     * Mark it busy and move it to the active instance.
+     */
+    pWorker->pBusyWith = pChild;
+#ifndef KBUILD_OS_WINDOWS
+    *pPidSpawned = pWorker->pid;
+#endif
+
+    kSubmitListUnlink(&g_IdleList, pWorker);
+    kSubmitListAppend(&g_BusyList, pWorker);
+    return 0;
+}
+
+
+#ifdef KBUILD_OS_WINDOWS
+
+/**
+ * Retrieve the worker child result.
+ *
+ * If incomplete, we restart the ReadFile operation like kSubmitMarkActive does.
+ *
+ * @returns 0 on success, -1 if ReadFile was restarted.
+ * @param   pvUser              The worker instance.
+ * @param   fBlock              if we're to block waiting for the result or not.
+ * @param   prcExit             Where to return the exit code.
+ * @param   piSigNo             Where to return the signal number.
+ */
+int kSubmitSubProcGetResult(intptr_t pvUser, int fBlock, int *prcExit, int *piSigNo)
+{
+    PWORKERINSTANCE pWorker = (PWORKERINSTANCE)pvUser;
+    KMKBUILTINCTX   FakeCtx = { "kSubmit/GetResult", NULL };
+    PKMKBUILTINCTX  pCtx = &FakeCtx;
+
+    /*
+     * Get the overlapped result.  There should be one since we're here
+     * because of a satisfied WaitForMultipleObject.
+     */
+    DWORD cbRead = 0;
+    if (GetOverlappedResult(pWorker->hPipe, &pWorker->OverlappedRead, &cbRead, fBlock ? TRUE : FALSE))
+    {
+        pWorker->cbResultRead += cbRead;
+        assert(pWorker->cbResultRead <= sizeof(pWorker->Result));
+
+        /* More to be read? */
+        while (pWorker->cbResultRead < sizeof(pWorker->Result))
+        {
+            int rc = kSubmitReadMoreResultWin(pCtx, pWorker, "kSubmitSubProcGetResult/more");
+            if (rc == -1)
+                return -1;
+            assert(rc == 0 || pWorker->Result.s.rcExit != 0);
+        }
+        assert(pWorker->cbResultRead == sizeof(pWorker->Result));
+    }
+    else
+    {
+        DWORD dwErr = GetLastError();
+        if (dwErr == ERROR_IO_INCOMPLETE && !fBlock)
+            return -1;
+        kSubmitWinReadFailed(pCtx, pWorker, dwErr, "kSubmitSubProcGetResult/result");
+    }
+
+    /*
+     * Okay, we've got a result.
+     */
+    *prcExit = pWorker->Result.s.rcExit;
+    switch (pWorker->Result.s.rcExit)
+    {
+        default:                                *piSigNo = 0; break;
+        case CONTROL_C_EXIT:                    *piSigNo = SIGINT; break;
+        case STATUS_INTEGER_DIVIDE_BY_ZERO:     *piSigNo = SIGFPE; break;
+        case STATUS_ACCESS_VIOLATION:           *piSigNo = SIGSEGV; break;
+        case STATUS_PRIVILEGED_INSTRUCTION:
+        case STATUS_ILLEGAL_INSTRUCTION:        *piSigNo = SIGILL; break;
+    }
+    if (pWorker->Result.s.rcExit && pWorker->fDebugDumpHistoryOnFailure)
+        kSubmitDumpHistory(pCtx, pWorker);
+    if (pWorker->Result.s.bWorkerExiting)
+        kSubmitCloseConnectOnExitingWorker(pCtx, pWorker);
+
+    return 0;
+}
+
+
+int kSubmitSubProcKill(intptr_t pvUser, int iSignal)
+{
+    return -1;
+}
+
+
+/**
+ * Called by process_cleanup when it's done with the worker.
+ *
+ * @param   pvUser              The worker instance.
+ */
+void kSubmitSubProcCleanup(intptr_t pvUser)
+{
+    PWORKERINSTANCE pWorker = (PWORKERINSTANCE)pvUser;
+    kSubmitListUnlink(&g_BusyList, pWorker);
+    kSubmitListAppend(&g_IdleList, pWorker);
+}
+
+#endif /* KBUILD_OS_WINDOWS */
+
+
+/**
+ * atexit callback that trigger worker termination.
+ */
+static void kSubmitAtExitCallback(void)
+{
+    PWORKERINSTANCE pWorker;
+    DWORD           msStartTick;
+    DWORD           cKillRaids = 0;
+    KMKBUILTINCTX   FakeCtx = { "kSubmit/atexit", NULL };
+    PKMKBUILTINCTX  pCtx = &FakeCtx;
+
+    /*
+     * Tell all the workers to exit by breaking the connection.
+     */
+    for (pWorker = g_IdleList.pHead; pWorker != NULL; pWorker = pWorker->pNext)
+        kSubmitCloseConnectOnExitingWorker(pCtx, pWorker);
+    for (pWorker = g_BusyList.pHead; pWorker != NULL; pWorker = pWorker->pNext)
+        kSubmitCloseConnectOnExitingWorker(pCtx, pWorker);
+
+    /*
+     * Wait a little while for them to stop.
+     */
+    Sleep(0);
+    msStartTick = GetTickCount();
+    for (;;)
+    {
+        /*
+         * Collect handles of running processes.
+         */
+        PWORKERINSTANCE apWorkers[MAXIMUM_WAIT_OBJECTS];
+        HANDLE          ahHandles[MAXIMUM_WAIT_OBJECTS];
+        DWORD           cHandles = 0;
+
+        for (pWorker = g_IdleList.pHead; pWorker != NULL; pWorker = pWorker->pNext)
+            if (pWorker->hProcess != INVALID_HANDLE_VALUE)
+            {
+                if (cHandles < MAXIMUM_WAIT_OBJECTS)
+                {
+                    apWorkers[cHandles] = pWorker;
+                    ahHandles[cHandles] = pWorker->hProcess;
+                }
+                cHandles++;
+            }
+        for (pWorker = g_BusyList.pHead; pWorker != NULL; pWorker = pWorker->pNext)
+            if (pWorker->hProcess != INVALID_HANDLE_VALUE)
+            {
+                if (cHandles < MAXIMUM_WAIT_OBJECTS)
+                {
+                    apWorkers[cHandles] = pWorker;
+                    ahHandles[cHandles] = pWorker->hProcess;
+                }
+                cHandles++;
+            }
+        if (cHandles == 0)
+            return;
+
+        /*
+         * Wait for the processes.
+         */
+        for (;;)
+        {
+            DWORD cMsElapsed = GetTickCount() - msStartTick;
+            DWORD dwWait = WaitForMultipleObjects(cHandles <= MAXIMUM_WAIT_OBJECTS ? cHandles : MAXIMUM_WAIT_OBJECTS,
+                                                  ahHandles, FALSE /*bWaitAll*/,
+                                                  cMsElapsed < 5000 ? 5000 - cMsElapsed + 16 : 16);
+            if (   dwWait >= WAIT_OBJECT_0
+                && dwWait <= WAIT_OBJECT_0 + MAXIMUM_WAIT_OBJECTS)
+            {
+                size_t idx = dwWait - WAIT_OBJECT_0;
+                CloseHandle(apWorkers[idx]->hProcess);
+                apWorkers[idx]->hProcess = INVALID_HANDLE_VALUE;
+
+                if (cHandles <= MAXIMUM_WAIT_OBJECTS)
+                {
+                    /* Restart the wait with the worker removed, or quit if it was the last worker. */
+                    cHandles--;
+                    if (!cHandles)
+                        return;
+                    if (idx != cHandles)
+                    {
+                        apWorkers[idx] = apWorkers[cHandles];
+                        ahHandles[idx] = ahHandles[cHandles];
+                    }
+                    continue;
+                }
+                /* else: Reconstruct the wait array so we get maximum coverage. */
+            }
+            else if (dwWait == WAIT_TIMEOUT)
+            {
+                /* Terminate the whole bunch. */
+                cKillRaids++;
+                if (cKillRaids == 1 && getenv("KMK_KSUBMIT_NO_KILL") == NULL)
+                {
+                    warnx(pCtx, "Killing %u lingering worker processe(s)!\n", cHandles);
+                    for (pWorker = g_IdleList.pHead; pWorker != NULL; pWorker = pWorker->pNext)
+                        if (pWorker->hProcess != INVALID_HANDLE_VALUE)
+                            TerminateProcess(pWorker->hProcess, WAIT_TIMEOUT);
+                    for (pWorker = g_BusyList.pHead; pWorker != NULL; pWorker = pWorker->pNext)
+                        if (pWorker->hProcess != INVALID_HANDLE_VALUE)
+                            TerminateProcess(pWorker->hProcess, WAIT_TIMEOUT);
+                }
+                else
+                {
+                    warnx(pCtx, "Giving up on the last %u worker processe(s). :-(\n", cHandles);
+                    return;
+                }
+            }
+            else
+            {
+                /* Some kind of wait error.  Could be a bad handle, check each and remove
+                   bad ones as well as completed ones. */
+                size_t idx;
+                warnx(pCtx, "WaitForMultipleObjects unexpectedly returned %#u (err=%u)\n",
+                      dwWait, GetLastError());
+                for (idx = 0; idx < cHandles; idx++)
+                {
+                    dwWait = WaitForSingleObject(ahHandles[idx], 0 /*ms*/);
+                    if (dwWait != WAIT_TIMEOUT)
+                    {
+                        CloseHandle(apWorkers[idx]->hProcess);
+                        apWorkers[idx]->hProcess = INVALID_HANDLE_VALUE;
+                    }
+                }
+            }
+            break;
+        } /* wait loop */
+    } /* outer wait loop */
+}
+
+
+static int kmk_builtin_kSubmit_usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+    kmk_builtin_ctx_printf(pCtx, fIsErr,
+                           "usage: %s [-Z|--zap-env] [-E|--set <var=val>] [-U|--unset <var=val>]\n"
+                           "           [-A|--append <var=val>] [-D|--prepend <var=val>]\n"
+                           "           [-s|--special-env <var=val>] [-C|--chdir <dir>]\n"
+                           "           [--wcc-brain-damage] [--no-pch-caching]\n"
+                           "           [-3|--32-bit] [-6|--64-bit] [-v] [--debug-dump-history]\n"
+                           "           [-P|--post-cmd <cmd> [args]] -- <program> [args]\n"
+                           "   or: %s --help\n"
+                           "   or: %s --version\n"
+                           "\n"
+                           "Options:\n"
+                           "  -Z, --zap-env, -i, --ignore-environment\n"
+                           "    Zaps the environment. Position dependent.\n"
+                           "  -E, --set <var>=[value]\n"
+                           "    Sets an environment variable putenv fashion. Position dependent.\n"
+                           "  -U, --unset <var>\n"
+                           "    Removes an environment variable. Position dependent.\n"
+                           "  -A, --append <var>=<value>\n"
+                           "    Appends the given value to the environment variable.\n"
+                           "  -D,--prepend <var>=<value>\n"
+                           "    Prepends the given value to the environment variable.\n"
+                           "  -s,--special-env <var>=<value>\n"
+                           "    Same as --set, but flags the variable for further expansion\n"
+                           "    within kWorker. Replacements:\n"
+                           "      @@PROCESSOR_GROUP@@   - The processor group number.\n"
+                           "      @@AUTHENTICATION_ID@@ - The authentication ID from the process token.\n"
+                           "      @@PID@@               - The kWorker process ID.\n"
+                           "      @@@@                  - Escaped \"@@\".\n"
+                           "      @@DEBUG_COUNTER@@     - An ever increasing counter (starts at zero).\n"
+                           "  -C, --chdir <dir>\n"
+                           "    Specifies the current directory for the program.  Relative paths\n"
+                           "    are relative to the previous -C option.  Default is getcwd value.\n"
+                           "  -3, --32-bit\n"
+                           "    Selects a 32-bit kWorker process. Default: kmk bit count\n"
+                           "  -6, --64-bit\n"
+                           "    Selects a 64-bit kWorker process. Default: kmk bit count\n"
+                           "  --wcc-brain-damage\n"
+                           "    Works around wcc and wcc386 (Open Watcom) not following normal\n"
+                           "    quoting conventions on Windows, OS/2, and DOS.\n"
+                           "  --no-pch-caching\n"
+                           "    Do not cache precompiled header files because they're being created.\n"
+                           "  -v,--verbose\n"
+                           "    More verbose execution.\n"
+                           "  --debug-dump-history\n"
+                           "    Dump the history as of the submitted command.  Handy for debugging\n"
+                           "    trouble caused by a previous job.\n"
+                           "  --debug-dump-history-on-failure, --no-debug-dump-history-on-failure\n"
+                           "    Dump the history on failure.  Can also be enabled by a non-empty\n"
+                           "    KMK_KSUBMIT_DUMP_HISTORY_ON_FAILURE variable (first invocation only).\n"
+                           "  -P|--post-cmd <cmd> ...\n"
+                           "    For running a built-in command on the output, specifying the command\n"
+                           "    and all it's parameters.  Currently supported commands:\n"
+                           "        kDepObj\n"
+                           "  -V,--version\n"
+                           "    Show the version number.\n"
+                           "  -h,--help\n"
+                           "    Show this usage information.\n"
+                           "\n"
+                           ,
+                           pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName);
+    return 2;
+}
+
+
+int kmk_builtin_kSubmit(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx, struct child *pChild, pid_t *pPidSpawned)
+{
+#ifdef KBUILD_OS_WINDOWS
+    static int      s_fInitialized      = 0;
+#endif
+    int             rcExit = 0;
+    int             iArg;
+    unsigned        cAllocatedEnvVars;
+    unsigned        cEnvVars;
+    char          **papszEnvVars;
+    const char     *pszExecutable       = NULL;
+    const char     *pszSpecialEnv       = NULL;
+    int             iPostCmd            = argc;
+    int             cPostCmdArgs        = 0;
+    unsigned        cBitsWorker         = g_cArchBits;
+    int             fWatcomBrainDamage  = 0;
+    int             fNoPchCaching       = 0;
+    int             fDebugDumpHistory   = 0;
+    static int      s_fDebugDumpHistoryOnFailure = -1;
+    int             fDebugDumpHistoryOnFailure = s_fDebugDumpHistoryOnFailure;
+    int             cVerbosity          = 0;
+    size_t const    cbCwdBuf            = GET_PATH_MAX;
+    PATH_VAR(szCwd);
+
+#ifdef KBUILD_OS_WINDOWS
+    /*
+     * First time thru we must perform some initializations.
+     */
+    if (s_fInitialized)
+    { }
+    else
+    {
+        MkWinChildInitCpuGroupAllocator(&g_SubmitProcessorGroupAllocator);
+# if K_ARCH_BITS == 64
+        MkWinChildInitCpuGroupAllocator(&g_SubmitProcessorGroupAllocator32);
+# endif
+        *(FARPROC *)&g_pfnSetThreadGroupAffinity = GetProcAddress(GetModuleHandleW(L"KERNEL32.DLL"), "SetThreadGroupAffinity");
+        s_fInitialized = 1;
+    }
+#endif
+    if (fDebugDumpHistoryOnFailure != -1)
+    { /* likely */ }
+    else
+    {
+        struct variable *pVar = lookup_variable(TUPLE("KMK_KSUBMIT_DUMP_HISTORY_ON_FAILURE"));
+        fDebugDumpHistoryOnFailure = pVar && *pVar->value != '\0';
+        s_fDebugDumpHistoryOnFailure = fDebugDumpHistoryOnFailure;
+    }
+
+    /*
+     * Create default program environment.
+     *
+     * Note! We only clean up the environment on successful return, assuming
+     *       make will stop after that.
+     */
+    if (getcwd_fs(szCwd, cbCwdBuf) != NULL)
+    { /* likely */ }
+    else
+        return err(pCtx, 1, "getcwd_fs failed\n");
+
+    /* The environment starts out in read-only mode and will be duplicated if modified. */
+    cAllocatedEnvVars = 0;
+    papszEnvVars = envp;
+    cEnvVars = 0;
+    while (papszEnvVars[cEnvVars] != NULL)
+        cEnvVars++;
+
+    /*
+     * Parse the command line.
+     */
+    for (iArg = 1; iArg < argc; iArg++)
+    {
+        const char *pszArg = argv[iArg];
+        if (*pszArg == '-')
+        {
+            char chOpt = *++pszArg;
+            pszArg++;
+            if (chOpt != '-')
+            {
+                if (chOpt != '\0')
+                { /* likely */ }
+                else
+                {
+                    errx(pCtx, 1, "Incomplete option: '-'");
+                    return kmk_builtin_kSubmit_usage(pCtx, 1);
+                }
+            }
+            else
+            {
+                /* '--' indicates where the bits to execute start. */
+                if (*pszArg == '\0')
+                {
+                    iArg++;
+                    break;
+                }
+
+                if (   strcmp(pszArg, "wcc-brain-damage") == 0
+                    || strcmp(pszArg, "watcom-brain-damage") == 0)
+                {
+                    fWatcomBrainDamage = 1;
+                    continue;
+                }
+
+                if (strcmp(pszArg, "no-pch-caching") == 0)
+                {
+                    fNoPchCaching = 1;
+                    continue;
+                }
+
+                if (strcmp(pszArg, "debug-dump-history") == 0)
+                {
+                    fDebugDumpHistory = 1;
+                    continue;
+                }
+
+                if (strcmp(pszArg, "debug-dump-history-on-failure") == 0)
+                {
+                    fDebugDumpHistoryOnFailure = 1;
+                    continue;
+                }
+
+                if (strcmp(pszArg, "no-debug-dump-history-on-failure") == 0)
+                {
+                    fDebugDumpHistoryOnFailure = 0;
+                    continue;
+                }
+
+                /* convert to short. */
+                if (strcmp(pszArg, "help") == 0)
+                    chOpt = 'h';
+                else if (strcmp(pszArg, "version") == 0)
+                    chOpt = 'V';
+                else if (strcmp(pszArg, "set") == 0)
+                    chOpt = 'E';
+                else if (strcmp(pszArg, "append") == 0)
+                    chOpt = 'A';
+                else if (strcmp(pszArg, "prepend") == 0)
+                    chOpt = 'D';
+                else if (strcmp(pszArg, "unset") == 0)
+                    chOpt = 'U';
+                else if (   strcmp(pszArg, "zap-env") == 0
+                         || strcmp(pszArg, "ignore-environment") == 0 /* GNU env compatibility. */ )
+                    chOpt = 'Z';
+                else if (strcmp(pszArg, "chdir") == 0)
+                    chOpt = 'C';
+                else if (strcmp(pszArg, "set-special") == 0)
+                    chOpt = 's';
+                else if (strcmp(pszArg, "post-cmd") == 0)
+                    chOpt = 'P';
+                else if (strcmp(pszArg, "32-bit") == 0)
+                    chOpt = '3';
+                else if (strcmp(pszArg, "64-bit") == 0)
+                    chOpt = '6';
+                else if (strcmp(pszArg, "verbose") == 0)
+                    chOpt = 'v';
+                else if (strcmp(pszArg, "executable") == 0)
+                    chOpt = 'e';
+                else
+                {
+                    errx(pCtx, 2, "Unknown option: '%s'", pszArg - 2);
+                    return kmk_builtin_kSubmit_usage(pCtx, 1);
+                }
+                pszArg = "";
+            }
+
+            do
+            {
+                /* Get option value first, if the option takes one. */
+                const char *pszValue = NULL;
+                switch (chOpt)
+                {
+                    case 'A':
+                    case 'C':
+                    case 'E':
+                    case 'U':
+                    case 'D':
+                    case 'e':
+                    case 's':
+                        if (*pszArg != '\0')
+                            pszValue = pszArg + (*pszArg == ':' || *pszArg == '=');
+                        else if (++iArg < argc)
+                            pszValue = argv[iArg];
+                        else
+                        {
+                            errx(pCtx, 1, "Option -%c requires a value!", chOpt);
+                            return kmk_builtin_kSubmit_usage(pCtx, 1);
+                        }
+                        break;
+                }
+
+                switch (chOpt)
+                {
+                    case 'Z':
+                    case 'i': /* GNU env compatibility. */
+                        rcExit = kBuiltinOptEnvZap(pCtx, &papszEnvVars, &cEnvVars, &cAllocatedEnvVars, cVerbosity);
+                        if (rcExit == 0)
+                            break;
+                        return rcExit;
+
+                    case 'E':
+                        rcExit = kBuiltinOptEnvSet(pCtx, &papszEnvVars, &cEnvVars, &cAllocatedEnvVars, cVerbosity, pszValue);
+                        if (rcExit == 0)
+                            break;
+                        return rcExit;
+
+                    case 'A':
+                        rcExit = kBuiltinOptEnvAppend(pCtx, &papszEnvVars, &cEnvVars, &cAllocatedEnvVars, cVerbosity, pszValue);
+                        if (rcExit == 0)
+                            break;
+                        return rcExit;
+
+                    case 'D':
+                        rcExit = kBuiltinOptEnvPrepend(pCtx, &papszEnvVars, &cEnvVars, &cAllocatedEnvVars, cVerbosity, pszValue);
+                        if (rcExit == 0)
+                            break;
+                        return rcExit;
+
+                    case 'U':
+                        rcExit = kBuiltinOptEnvUnset(pCtx, &papszEnvVars, &cEnvVars, &cAllocatedEnvVars, cVerbosity, pszValue);
+                        if (rcExit == 0)
+                            break;
+                        return rcExit;
+
+                    case 'C':
+                        rcExit = kBuiltinOptChDir(pCtx, szCwd, cbCwdBuf, pszValue);
+                        if (rcExit == 0)
+                            break;
+                        return rcExit;
+
+                    case 's':
+                        if (pszSpecialEnv)
+                            return errx(pCtx, 1, "The -s option can only be used once!");
+                        pszSpecialEnv = pszValue;
+                        rcExit = kBuiltinOptEnvSet(pCtx, &papszEnvVars, &cEnvVars, &cAllocatedEnvVars, cVerbosity, pszValue);
+                        if (rcExit == 0)
+                            break;
+                        return rcExit;
+
+                    case 'P':
+                        if (cPostCmdArgs > 0)
+                            return errx(pCtx, 1, "The -P option can only be used once!");
+                        if (*pszArg != '\0')
+                            return errx(pCtx, 1, "The cmd part of the -P needs to be a separate argument!");
+                        iPostCmd = ++iArg;
+                        if (iArg >= argc)
+                            return errx(pCtx, 1, "The -P option requires a command following it!");
+                        while (iArg < argc && strcmp(argv[iArg], "--") != 0)
+                            iArg++;
+                        cPostCmdArgs = iArg - iPostCmd;
+                        iArg--;
+                        break;
+
+                    case '3':
+                        cBitsWorker = 32;
+                        break;
+
+                    case '6':
+                        cBitsWorker = 64;
+                        break;
+
+                    case 'e':
+                        pszExecutable = pszValue;
+                        break;
+
+                    case 'v':
+                        cVerbosity++;
+                        break;
+
+                    case 'h':
+                        kmk_builtin_kSubmit_usage(pCtx, 0);
+                        kBuiltinOptEnvCleanup(&papszEnvVars, cEnvVars, &cAllocatedEnvVars);
+                        return 0;
+
+                    case 'V':
+                        kBuiltinOptEnvCleanup(&papszEnvVars, cEnvVars, &cAllocatedEnvVars);
+                        return kbuild_version(argv[0]);
+                }
+            } while ((chOpt = *pszArg++) != '\0');
+        }
+        else
+        {
+            errx(pCtx, 1, "Unknown argument: '%s'", pszArg);
+            return kmk_builtin_kSubmit_usage(pCtx, 1);
+        }
+    }
+
+    /*
+     * Check that we've got something to execute.
+     */
+    if (iArg < argc)
+    {
+        uint32_t        cbMsg;
+        void           *pvMsg   = kSubmitComposeJobMessage(pszExecutable, &argv[iArg], papszEnvVars, szCwd,
+                                                           fWatcomBrainDamage, fNoPchCaching, pszSpecialEnv,
+                                                           &argv[iPostCmd], cPostCmdArgs, &cbMsg);
+        PWORKERINSTANCE pWorker = kSubmitSelectWorkSpawnNewIfNecessary(pCtx, cBitsWorker, cVerbosity);
+        if (pWorker)
+        {
+            /* Before we send off the job, we should dump pending output, since
+               the kWorker process currently does not coordinate its output with
+               the output.c mechanics. */
+#ifdef CONFIG_NEW_WIN_CHILDREN
+            if (pCtx->pOut && !pWorker->pStdOut)
+#else
+            if (pCtx->pOut)
+#endif
+                output_dump(pCtx->pOut);
+            pWorker->fDebugDumpHistoryOnFailure = fDebugDumpHistoryOnFailure;
+            rcExit = kSubmitSendJobMessage(pCtx, pWorker, pvMsg, cbMsg, 0 /*fNoRespawning*/, cVerbosity);
+            if (rcExit == 0)
+            {
+                pvMsg = kSubmitUpdateHistory(pWorker, pvMsg, cbMsg);
+                if (fDebugDumpHistory)
+                    kSubmitDumpHistory(pCtx, pWorker);
+                rcExit = kSubmitMarkActive(pCtx, pWorker, cVerbosity, pChild, pPidSpawned);
+            }
+
+            if (!g_fAtExitRegistered)
+                if (atexit(kSubmitAtExitCallback) == 0)
+                    g_fAtExitRegistered = 1;
+        }
+        else
+            rcExit = 1;
+        free(pvMsg);
+    }
+    else
+    {
+        errx(pCtx, 1, "Nothing to executed!");
+        rcExit = kmk_builtin_kSubmit_usage(pCtx, 1);
+    }
+
+    kBuiltinOptEnvCleanup(&papszEnvVars, cEnvVars, &cAllocatedEnvVars);
+    return rcExit;
+}
+
diff --git a/src/kmk/kmkbuiltin/kbuild_protection.c b/src/kmk/kmkbuiltin/kbuild_protection.c
new file mode 100644
index 0000000..373fd88
--- /dev/null
+++ b/src/kmk/kmkbuiltin/kbuild_protection.c
@@ -0,0 +1,376 @@
+/* $Id: kbuild_protection.c 3192 2018-03-26 20:25:56Z bird $ */
+/** @file
+ * Simple File Protection.
+ */
+
+/*
+ * Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "config.h"
+#include <sys/types.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <assert.h>
+#if defined(_MSC_VER) || defined(__OS2__)
+# include <limits.h>
+# include <direct.h>
+#else
+# include <unistd.h>
+#endif
+#include "kbuild_protection.h"
+#include "err.h"
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+#define KBUILD_PROTECTION_MAGIC     0x00111100
+
+#if defined(__EMX__) || defined(_MSC_VER)
+# define IS_SLASH(ch)               ( (ch) == '/' || (ch) == '\\' )
+# define DEFAULT_PROTECTION_DEPTH   1
+#else
+# define IS_SLASH(ch)               ( (ch) == '/' )
+# define DEFAULT_PROTECTION_DEPTH   2
+#endif
+
+
+
+/**
+ * Counts the components in the specified sub path.
+ * This is a helper for count_path_components.
+ *
+ * etc = 1
+ * etc/ = 1
+ * etc/x11 = 2
+ * and so and and so forth.
+ */
+static int countSubPathComponents(const char *pszPath, int cDepth)
+{
+    for (;;)
+    {
+        const char *pszEnd;
+        size_t cch;
+
+        /* skip slashes. */
+        while (IS_SLASH(*pszPath))
+            pszPath++;
+        if (!*pszPath)
+            break;
+
+        /* find end of component. */
+        pszEnd = pszPath;
+        while (!IS_SLASH(*pszEnd) && *pszEnd)
+            pszEnd++;
+
+        /* count it, checking for '..' and '.'. */
+        cch = pszEnd - pszPath;
+        if (cch == 2 && pszPath[0] == '.' && pszPath[1] == '.')
+        {
+            if (cDepth > 0)
+                cDepth--;
+        }
+        else if (cch != 1 || pszPath[0] != '.')
+            cDepth++;
+
+        /* advance */
+        if (!*pszEnd)
+            break;
+        pszPath = pszEnd + 1;
+    }
+    return cDepth;
+}
+
+
+/**
+ * Parses the specified path counting the number of components
+ * relative to root.
+ *
+ * We don't check symbolic links and such, just some simple and cheap
+ * path parsing.
+ *
+ * @param   pszPath     The path to process.
+ *
+ * @returns 0 or higher on success.
+ *          On failure an error is printed, eval is set and -1 is returned.
+ */
+static int countPathComponents(PCKBUILDPROTECTION pThis, const char *pszPath)
+{
+    int cComponents = 0;
+
+    /*
+     * Deal with root, UNC, drive letter.
+ */
+#if defined(_MSC_VER) || defined(__OS2__)
+    if (IS_SLASH(pszPath[0]) && IS_SLASH(pszPath[1]) && !IS_SLASH(pszPath[2]))
+    {
+        /* skip the root - UNC */
+        pszPath += 3;
+        while (!IS_SLASH(*pszPath) && *pszPath) /* server name */
+            pszPath++;
+        while (IS_SLASH(*pszPath))
+            pszPath++;
+        while (!IS_SLASH(*pszPath) && *pszPath) /* share name */
+            pszPath++;
+        while (IS_SLASH(*pszPath))
+            pszPath++;
+    }
+    else
+    {
+        unsigned uDriveLetter = (unsigned)toupper(pszPath[0]) - (unsigned)'A';
+        if (uDriveLetter <= (unsigned)('Z' - 'A') && pszPath[1] == ':')
+            uDriveLetter++; /* A == 1 */
+        else
+            uDriveLetter = 0; /* 0 == default */
+
+        if (!IS_SLASH(pszPath[uDriveLetter ? 2 : 0]))
+        {
+            /*
+             * Relative path, must count cwd depth first.
+             */
+#ifdef __OS2__ /** @todo remove when ticket 194 has been fixed */
+            char *pszCwd = _getdcwd(uDriveLetter, NULL, PATH_MAX);
+#else
+            char *pszCwd = _getdcwd(uDriveLetter, NULL, 0);
+#endif
+            char *pszTmp = pszCwd;
+            if (!pszTmp)
+            {
+                err(pThis->pCtx, 1, "_getdcwd");
+                return -1;
+            }
+
+            if (IS_SLASH(pszTmp[0]) && IS_SLASH(pszTmp[1]))
+            {
+                /* skip the root - UNC */
+                pszTmp += 2;
+                while (!IS_SLASH(*pszTmp) && *pszTmp) /* server name */
+                    pszTmp++;
+                while (IS_SLASH(*pszTmp))
+                    pszTmp++;
+                while (!IS_SLASH(*pszTmp) && *pszTmp) /* share name */
+                    pszTmp++;
+            }
+            else
+            {
+                /* skip the drive letter and while we're at it, the root slash too. */
+                pszTmp += 1 + (pszTmp[1] == ':');
+            }
+            cComponents = countSubPathComponents(pszTmp, 0);
+            free(pszCwd);
+        }
+        else
+        {
+            /* skip the drive letter and while we're at it, the root slash too. */
+            pszPath += uDriveLetter ? 3 : 1;
+        }
+    }
+#else  /* !WIN && !OS2 */
+    if (!IS_SLASH(pszPath[0]))
+    {
+        /*
+         * Relative path, must count cwd depth first.
+         */
+        char szCwd[4096];
+        if (!getcwd(szCwd, sizeof(szCwd)))
+        {
+            err(pThis->pCtx, 1, "getcwd");
+            return -1;
+        }
+        cComponents = countSubPathComponents(szCwd, 0);
+    }
+#endif /* !WIN && !OS2 */
+
+    /*
+     * We're now past any UNC or drive letter crap, possibly positioned
+     * at the root slash or at the start of a path component at the
+     * given depth. Count the remainder.
+     */
+    return countSubPathComponents(pszPath, cComponents);
+}
+
+
+/**
+ * Initializes the instance data.
+ *
+ * @param   pThis   Pointer to the instance data.
+ */
+void kBuildProtectionInit(PKBUILDPROTECTION pThis, PKMKBUILTINCTX pCtx)
+{
+    pThis->uMagic = KBUILD_PROTECTION_MAGIC;
+    pThis->pCtx = pCtx;
+    pThis->afTypes[KBUILDPROTECTIONTYPE_FULL] = 0;
+    pThis->afTypes[KBUILDPROTECTIONTYPE_RECURSIVE] = 1;
+    pThis->cProtectionDepth = DEFAULT_PROTECTION_DEPTH;
+}
+
+
+/**
+ * Destroys the instance data.
+ *
+ * @param   pThis   Pointer to the instance data.
+ */
+void kBuildProtectionTerm(PKBUILDPROTECTION pThis)
+{
+    pThis->uMagic = 0;
+}
+
+
+void kBuildProtectionEnable(PKBUILDPROTECTION pThis, KBUILDPROTECTIONTYPE enmType)
+{
+    assert(pThis->uMagic == KBUILD_PROTECTION_MAGIC);
+    assert(enmType < KBUILDPROTECTIONTYPE_MAX && enmType >= KBUILDPROTECTIONTYPE_FIRST);
+    pThis->afTypes[enmType] |= 1;
+}
+
+
+void kBuildProtectionDisable(PKBUILDPROTECTION pThis, KBUILDPROTECTIONTYPE enmType)
+{
+    assert(pThis->uMagic == KBUILD_PROTECTION_MAGIC);
+    assert(enmType < KBUILDPROTECTIONTYPE_MAX && enmType >= KBUILDPROTECTIONTYPE_FIRST);
+    pThis->afTypes[enmType] &= ~1U;
+}
+
+
+/**
+ * Sets the protection depth according to the option argument.
+ *
+ * @param   pszValue    The value.
+ *
+ * @returns 0 on success, -1 and errx on failure.
+ */
+int  kBuildProtectionSetDepth(PKBUILDPROTECTION pThis, const char *pszValue)
+{
+    /* skip leading blanks, they don't count either way. */
+    while (isspace(*pszValue))
+        pszValue++;
+
+    /* number or path? */
+    if (!isdigit(*pszValue) || strpbrk(pszValue, ":/\\"))
+        pThis->cProtectionDepth = countPathComponents(pThis, pszValue);
+    else
+    {
+        char *pszMore = 0;
+        pThis->cProtectionDepth = strtol(pszValue, &pszMore, 0);
+        if (pThis->cProtectionDepth != 0 && pszMore)
+        {
+            /* trailing space is harmless. */
+            while (isspace(*pszMore))
+                pszMore++;
+        }
+        if (!pThis->cProtectionDepth || pszValue == pszMore || *pszMore)
+            return errx(pThis->pCtx, 1, "bogus protection depth: %s", pszValue);
+    }
+
+    if (pThis->cProtectionDepth < 1)
+        return  errx(pThis->pCtx, 1, "bogus protection depth: %s", pszValue);
+    return 0;
+}
+
+
+/**
+ * Scans the environment for option overrides.
+ *
+ * @param   pThis       Pointer to the instance data.
+ * @param   papszEnv    The environment array.
+ * @param   pszPrefix   The variable prefix.
+ *
+ * @returns 0 on success, -1 and err*() on failure.
+ */
+int  kBuildProtectionScanEnv(PKBUILDPROTECTION pThis, char **papszEnv, const char *pszPrefix)
+{
+    unsigned i;
+    const size_t cchPrefix = strlen(pszPrefix);
+
+    for (i = 0; papszEnv[i]; i++)
+    {
+        const char *pszVar = papszEnv[i];
+        if (!strncmp(pszVar, pszPrefix, cchPrefix))
+        {
+            pszVar += cchPrefix;
+            if (!strncmp(pszVar, "PROTECTION_DEPTH=", sizeof("PROTECTION_DEPTH=") - 1))
+            {
+                const char *pszVal = pszVar + sizeof("PROTECTION_DEPTH=") - 1;
+                if (kBuildProtectionSetDepth(pThis, pszVal))
+                    return -1;
+            }
+            else if (!strncmp(pszVar, "DISABLE_PROTECTION=", sizeof("DISABLE_PROTECTION=") - 1))
+                pThis->afTypes[KBUILDPROTECTIONTYPE_RECURSIVE] &= ~1U;
+            else if (!strncmp(pszVar, "ENABLE_PROTECTION=", sizeof("ENABLE_PROTECTION=") - 1))
+                pThis->afTypes[KBUILDPROTECTIONTYPE_RECURSIVE] |= 3;
+            else if (!strncmp(pszVar, "DISABLE_FULL_PROTECTION=", sizeof("DISABLE_FULL_PROTECTION=") - 1))
+                pThis->afTypes[KBUILDPROTECTIONTYPE_FULL] &= ~1U;
+            else if (!strncmp(pszVar, "ENABLE_FULL_PROTECTION=", sizeof("ENABLE_FULL_PROTECTION=") - 1))
+                pThis->afTypes[KBUILDPROTECTIONTYPE_FULL] |= 3;
+        }
+    }
+    return 0;
+}
+
+
+/**
+ * Protect the upper layers of the file system against accidental
+ * or malicious deletetion attempt from within a makefile.
+ *
+ * @param   pszPath             The path to check.
+ * @param   required_depth      The minimum number of components in the
+ *                              path counting from the root.
+ *
+ * @returns 0 on success.
+ *          On failure an error is printed and -1 is returned.
+ */
+int  kBuildProtectionEnforce(PCKBUILDPROTECTION pThis, KBUILDPROTECTIONTYPE enmType, const char *pszPath)
+{
+    assert(pThis->uMagic == KBUILD_PROTECTION_MAGIC);
+    assert(enmType < KBUILDPROTECTIONTYPE_MAX && enmType >= KBUILDPROTECTIONTYPE_FIRST);
+
+    if (   (pThis->afTypes[enmType] & 3)
+        || (pThis->afTypes[KBUILDPROTECTIONTYPE_FULL] & 3))
+    {
+        /*
+         * Count the path and compare it with the required depth.
+         */
+        int cComponents = countPathComponents(pThis, pszPath);
+        if (cComponents < 0)
+            return -1;
+        if ((unsigned int)cComponents <= pThis->cProtectionDepth)
+        {
+            errx(pThis->pCtx, 1, "%s: protected", pszPath);
+            return -1;
+        }
+    }
+    return 0;
+}
+
+
+/**
+ * Retrieve the default path protection depth.
+ *
+ * @returns the default value.
+ */
+int  kBuildProtectionDefaultDepth(void)
+{
+    return DEFAULT_PROTECTION_DEPTH;
+}
+
diff --git a/src/kmk/kmkbuiltin/kbuild_protection.h b/src/kmk/kmkbuiltin/kbuild_protection.h
new file mode 100644
index 0000000..4e8aed1
--- /dev/null
+++ b/src/kmk/kmkbuiltin/kbuild_protection.h
@@ -0,0 +1,67 @@
+/* $Id: kbuild_protection.h 3192 2018-03-26 20:25:56Z bird $ */
+/** @file
+ * Simple File Protection.
+ */
+
+/*
+ * Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef ___kbuild_protection_h
+#define ___kbuild_protection_h
+
+
+/**
+ * The different protection types.
+ */
+typedef enum
+{
+    KBUILDPROTECTIONTYPE_FIRST = 0,
+    KBUILDPROTECTIONTYPE_RECURSIVE = KBUILDPROTECTIONTYPE_FIRST,
+    KBUILDPROTECTIONTYPE_FULL,
+    KBUILDPROTECTIONTYPE_MAX
+} KBUILDPROTECTIONTYPE;
+
+
+/**
+ * The instance data.
+ * Don't touch.
+ */
+typedef struct KBUILDPROTECTION
+{
+    unsigned int    uMagic;
+    unsigned int    cProtectionDepth;
+    struct KMKBUILTINCTX *pCtx;
+    unsigned char   afTypes[KBUILDPROTECTIONTYPE_MAX];
+} KBUILDPROTECTION;
+typedef KBUILDPROTECTION  *PKBUILDPROTECTION;
+typedef const KBUILDPROTECTION *PCKBUILDPROTECTION;
+
+
+void kBuildProtectionInit(PKBUILDPROTECTION pThis, struct KMKBUILTINCTX *pCtx);
+void kBuildProtectionTerm(PKBUILDPROTECTION pThis);
+int  kBuildProtectionScanEnv(PKBUILDPROTECTION pThis, char **papszEnv, const char *pszPrefix);
+void kBuildProtectionEnable(PKBUILDPROTECTION pThis, KBUILDPROTECTIONTYPE enmType);
+void kBuildProtectionDisable(PKBUILDPROTECTION pThis, KBUILDPROTECTIONTYPE enmType);
+int  kBuildProtectionSetDepth(PKBUILDPROTECTION pThis, const char *pszValue);
+int  kBuildProtectionEnforce(PCKBUILDPROTECTION pThis, KBUILDPROTECTIONTYPE enmType, const char *pszPath);
+int  kBuildProtectionDefaultDepth(void);
+
+#endif
+
diff --git a/src/kmk/kmkbuiltin/kill.c b/src/kmk/kmkbuiltin/kill.c
new file mode 100644
index 0000000..7ba6f17
--- /dev/null
+++ b/src/kmk/kmkbuiltin/kill.c
@@ -0,0 +1,653 @@
+/* $Id: kill.c 3352 2020-06-05 00:31:50Z bird $ */
+/** @file
+ * kmk kill - Process killer.
+ */
+
+/*
+ * Copyright (c) 2007-2020 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <assert.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#ifdef WINDOWS32
+# include <process.h>
+# include <Windows.h>
+# include <tlhelp32.h>
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include "err.h"
+#include "kmkbuiltin.h"
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/** @name kmkKillMatchName flags
+ * @{ */
+#define KMKKILL_FN_EXE_SUFF   1
+#define KMKKILL_FN_WILDCARD   2
+#define KMKKILL_FN_WITH_PATH  4
+#define KMKKILL_FN_ROOT_SLASH 8
+/** @} */
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct KMKKILLGLOBALS
+{
+    PKMKBUILTINCTX  pCtx;
+    int             cVerbosity;
+    const char     *pszCur;
+} KMKKILLGLOBALS;
+
+
+
+/**
+ * Kill one process by it's PID.
+ *
+ * The name is optional and only for messaging.
+ */
+static int kmkKillProcessByPid(KMKKILLGLOBALS *pThis, pid_t pid, const char *pszName)
+{
+    int rcExit;
+    HANDLE hProcess = OpenProcess(PROCESS_TERMINATE, FALSE /*bInherit*/, pid);
+    if (!hProcess)
+        rcExit = errx(pThis->pCtx, 1, "Failed to open pid %u (%#x%s%s): %u",
+                      pid, pid, pszName ? ", " : "", pszName ? pszName : "", GetLastError());
+    else
+    {
+        if (!TerminateProcess(hProcess, DBG_TERMINATE_PROCESS))
+            rcExit = errx(pThis->pCtx, 1, "TerminateProcess failed on pid %u (%#x%s%s): %u",
+                          pid, pid, pszName ? ", " : "", pszName ? pszName : "", GetLastError());
+        else if (pThis->cVerbosity > 0)
+            kmk_builtin_ctx_printf(pThis->pCtx, 0, "Terminated %u (%#x)%s%s\n",
+                                   pid, pid, pszName ? " - " : "", pszName ? pszName : "");
+        CloseHandle(hProcess);
+    }
+    return rcExit;
+}
+
+
+/**
+ * Does simple wilcard filename matching.
+ *
+ * @returns 1 on match, 0 on mismatch.
+ * @param   pszPattern          The pattern.
+ * @param   cchPattern          The length of the pattern.
+ * @param   pchFilename         The filename to match.  This does not have to be
+ *                              terminated at @a cchFilename.
+ * @param   cchFilename         The length of the filename that we should match.
+ * @param   cDepth              The recursion depth.
+ */
+static int kmkKillMatchWildcard(const char *pszPattern, size_t cchPattern,
+                                const char *pchFilename, size_t cchFilename, unsigned cDepth)
+{
+    while (cchPattern > 0 && cchFilename > 0)
+    {
+        char chPat = *pszPattern++;
+        cchPattern--;
+        if (chPat != '*')
+        {
+            if (chPat != '?')
+            {
+                char chExe = *pchFilename;
+                if (   chExe != chPat
+                    && tolower(chExe) != tolower(chPat))
+                    return 0;
+            }
+            pchFilename++;
+            cchFilename--;
+        }
+        else
+        {
+            size_t off, cchExeMin;
+
+            while (cchPattern > 0 && *pszPattern == '*')
+            {
+                pszPattern++;
+                cchPattern--;
+            }
+
+            /* Trailing '*'? */
+            if (!cchPattern)
+                return 1;
+
+            /* Final wildcard? Match the tail. */
+            if (memchr(pszPattern, '*', cchPattern) == NULL)
+            {
+                if (memchr(pszPattern, '?', cchPattern) == NULL)
+                    return cchFilename >= cchPattern
+                        && strnicmp(&pchFilename[cchFilename - cchPattern], pszPattern, cchPattern) == 0;
+
+                /* Only '?', so we know the exact length of this '*' match and can do a single tail matching. */
+                return cchFilename >= cchPattern
+                    && kmkKillMatchWildcard(pszPattern, cchPattern, &pchFilename[cchFilename - cchPattern], cchPattern, cDepth + 1);
+            }
+
+            /*
+             * More wildcards ('*'), so we need to need to try out all matching
+             * length for this one.   We start by counting non-asterisks chars
+             * in the remaining pattern so we know when to stop trying.
+             * This must be at least 1 char.
+             */
+            if (cDepth >= 32)
+                return 0;
+
+            for (off = cchExeMin = 0; off < cchPattern; off++)
+                cchExeMin += pszPattern[off] != '*';
+            assert(cchExeMin > 0);
+
+            while (cchFilename >= cchExeMin)
+            {
+                if (kmkKillMatchWildcard(pszPattern, cchPattern, pchFilename, cchFilename, cDepth + 1))
+                    return 1;
+                /* next */
+                pchFilename++;
+                cchFilename--;
+            }
+            return 0;
+        }
+    }
+
+    /* If there is more filename left, we won't have a match. */
+    if (cchFilename != 0)
+        return 0;
+
+    /* If there is pattern left, we still have a match if it's all asterisks. */
+    while (cchPattern > 0 && *pszPattern == '*')
+    {
+        pszPattern++;
+        cchPattern--;
+    }
+    return cchPattern == 0;
+}
+
+
+/**
+ * Matches a process name against the given pattern.
+ *
+ * @returns 1 if it matches, 0 if it doesn't.
+ * @param   pszPattern      The pattern to match against.
+ * @param   cchPattern      The pattern length.
+ * @param   fPattern        Pattern characteristics.
+ * @param   pszExeFile      The EXE filename to match (includes path).
+ * @param   cchExeFile      The length of the EXE filename.
+ */
+static int kmkKillMatchName(const char *pszPattern, size_t cchPattern, unsigned fPattern,
+                            const char *pszExeFile, size_t cchExeFile)
+{
+    /*
+     * Automatically match the exe suffix if not present in the pattern.
+     */
+    if (   !(fPattern & KMKKILL_FN_EXE_SUFF)
+        && cchExeFile > 4
+        && stricmp(&pszExeFile[cchExeFile - 4], ".exe") == 0)
+        cchExeFile -= sizeof(".exe") - 1;
+
+    /*
+     * If no path in the pattern, move pszExeFile up to the filename part.
+     */
+    if (!(fPattern & KMKKILL_FN_WITH_PATH)
+        && (   memchr(pszExeFile, '\\', cchExeFile) != NULL
+            || memchr(pszExeFile, '/', cchExeFile)  != NULL
+            || memchr(pszExeFile, ':', cchExeFile)  != NULL))
+    {
+        size_t  offFilename = cchExeFile;
+        char    ch;
+        while (   offFilename > 0
+               && (ch = pszExeFile[offFilename - 1]) != '\\'
+               && ch != '//'
+               && ch != ':')
+            offFilename--;
+        cchExeFile -= offFilename;
+        pszExeFile += offFilename;
+    }
+
+    /*
+     * Wildcard?  This only works for the filename part.
+     */
+    if (fPattern & KMKKILL_FN_WILDCARD)
+        return kmkKillMatchWildcard(pszPattern, cchPattern, pszExeFile, cchExeFile, 0);
+
+    /*
+     * No-wildcard pattern.
+     */
+    if (cchExeFile >= cchPattern)
+    {
+        if (strnicmp(&pszExeFile[cchExeFile - cchPattern], pszPattern, cchPattern) == 0)
+            return cchExeFile == cchPattern
+                || (fPattern & KMKKILL_FN_ROOT_SLASH)
+                || pszExeFile[cchExeFile - cchPattern - 1] == '\\'
+                || pszExeFile[cchExeFile - cchPattern - 1] == '/'
+                || pszExeFile[cchExeFile - cchPattern - 1] == ':';
+
+        /*
+         * Might be slash directions or multiple consequtive slashes
+         * making a difference here, so compare char-by-char from the end.
+         */
+        if (fPattern & KMKKILL_FN_WITH_PATH)
+        {
+            while (cchPattern > 0 && cchExeFile > 0)
+            {
+                char chPat = pszPattern[--cchPattern];
+                char chExe = pszExeFile[--cchExeFile];
+                if (chPat == chExe)
+                {
+                    if (chPat != '\\' && chPat != '/')
+                    {
+                        if (chPat != ':' || cchPattern > 0)
+                            continue;
+                        return 1;
+                    }
+                }
+                else
+                {
+                    chPat = tolower(chPat);
+                    chExe = tolower(chExe);
+                    if (chPat == chExe)
+                        continue;
+                    if (chPat == '/')
+                        chPat = '\\';
+                    if (chExe == '/')
+                        chExe = '\\';
+                    if (chPat != chExe)
+                        return 0;
+                }
+
+                while (cchPattern > 0 && ((chPat = pszPattern[cchPattern - 1] == '\\') || chPat == '/'))
+                    cchPattern--;
+                if (!cchPattern)
+                    return 1;
+
+                while (cchExeFile > 0 && ((chExe = pszExeFile[cchExeFile - 1] == '\\') || chExe == '/'))
+                    cchExeFile--;
+            }
+
+            if (   cchExeFile == 0
+                || pszExeFile[cchExeFile - 1] == '\\'
+                || pszExeFile[cchExeFile - 1] == '/'
+                || pszExeFile[cchExeFile - 1] == ':')
+                return 1;
+        }
+    }
+    return 0;
+}
+
+
+/**
+ * Analyzes pattern for kmkKillMatchName().
+ *
+ * @returns Pattern characteristics.
+ * @param   pszPattern          The pattern.
+ * @param   cchPattern          The pattern length.
+ */
+static unsigned kmkKillAnalyzePattern(const char *pszPattern, size_t cchPattern)
+{
+    unsigned fPattern = 0;
+    if (cchPattern > 4 && stricmp(&pszPattern[cchPattern - 4], ".exe") == 0)
+        fPattern |= KMKKILL_FN_EXE_SUFF;
+    if (memchr(pszPattern, '*', cchPattern) != NULL)
+        fPattern |= KMKKILL_FN_WILDCARD;
+    if (memchr(pszPattern, '?', cchPattern)  != NULL)
+        fPattern |= KMKKILL_FN_WILDCARD;
+    if (memchr(pszPattern, '/', cchPattern)  != NULL)
+        fPattern |= KMKKILL_FN_WITH_PATH;
+    if (memchr(pszPattern, '\\', cchPattern) != NULL)
+        fPattern |= KMKKILL_FN_WITH_PATH;
+    if (*pszPattern == '\\' || *pszPattern == '/')
+        fPattern |= KMKKILL_FN_ROOT_SLASH;
+    return fPattern;
+}
+
+
+/**
+ * Enumerate processes and kill the ones matching the pattern.
+ */
+static int kmkKillProcessByName(KMKKILLGLOBALS *pThis, const char *pszPattern)
+{
+    HANDLE         hSnapshot;
+    int            rcExit     = 0;
+    size_t const   cchPattern = strlen(pszPattern);
+    unsigned const fPattern   = kmkKillAnalyzePattern(pszPattern, cchPattern);
+    if (cchPattern == 0)
+        return errx(pThis->pCtx, 1, "Empty process name!");
+    if ((fPattern & (KMKKILL_FN_WILDCARD | KMKKILL_FN_WITH_PATH)) == (KMKKILL_FN_WILDCARD | KMKKILL_FN_WITH_PATH))
+        return errx(pThis->pCtx, 1, "Wildcard and paths cannot be mixed: %s", pszPattern);
+
+    hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
+    if (!hSnapshot)
+        rcExit = errx(pThis->pCtx, 1, "CreateToolhelp32Snapshot failed: %d", GetLastError());
+    else
+    {
+        union
+        {
+            PROCESSENTRY32  Entry;
+            char            achBuf[8192];
+        } u;
+
+        memset(&u, 0, sizeof(u));
+        u.Entry.dwSize = sizeof(u) - sizeof(".exe");
+        SetLastError(NO_ERROR);
+        if (Process32First(hSnapshot, &u.Entry))
+        {
+            for (;;)
+            {
+                /* Kill it if it matches. */
+                u.achBuf[sizeof(u.achBuf) - sizeof(".exe")] = '\0';
+                if (   u.Entry.szExeFile[0] != '\0'
+                    && kmkKillMatchName(pszPattern, cchPattern, fPattern, u.Entry.szExeFile, strlen(u.Entry.szExeFile)))
+                {
+                    int rcExit2 = kmkKillProcessByPid(pThis, u.Entry.th32ProcessID, u.Entry.szExeFile);
+                    if (rcExit2 != 0 && rcExit == 0)
+                        rcExit = rcExit2;
+                }
+
+                /* next */
+                u.Entry.dwSize = sizeof(u) - sizeof(".exe");
+                SetLastError(NO_ERROR);
+                if (!Process32Next(hSnapshot, &u.Entry))
+                {
+                    if (GetLastError() != ERROR_NO_MORE_FILES)
+                        rcExit = errx(pThis->pCtx, 1, "Process32Next failed: %d", GetLastError());
+                    break;
+                }
+            }
+        }
+        else
+            rcExit = errx(pThis->pCtx, 1, "Process32First failed: %d", GetLastError());
+        CloseHandle(hSnapshot);
+    }
+    return rcExit;
+
+}
+
+
+/**
+ * Worker for handling one command line process target.
+ *
+ * @returns 0 on success, non-zero exit code on failure.
+ */
+static int kmkKillProcess(KMKKILLGLOBALS *pThis, const char *pszTarget)
+{
+    /*
+     * Try treat the target as a pid first, then a name pattern.
+     */
+    char *pszNext = NULL;
+    long  pid;
+    errno = 0;
+    pid = strtol(pszTarget, &pszNext, 0);
+    if (pszNext && *pszNext == '\0' && errno == 0)
+        return kmkKillProcessByPid(pThis, pid, NULL);
+    return kmkKillProcessByName(pThis, pszTarget);
+}
+
+
+/**
+ * Worker for handling one command line job target.
+ *
+ * @returns 0 on success, non-zero exit code on failure.
+ */
+static int kmkKillJob(KMKKILLGLOBALS *pThis, const char *pszTarget)
+{
+    int    rcExit   = 0;
+    HANDLE hTempJob = NULL;
+    BOOL   fIsInJob = FALSE;
+
+    /*
+     * Open the job object.
+     */
+    DWORD  fRights  = JOB_OBJECT_QUERY | JOB_OBJECT_TERMINATE | JOB_OBJECT_ASSIGN_PROCESS;
+    HANDLE hJob     = OpenJobObjectA(fRights, FALSE /*bInheritHandle*/, pszTarget);
+    if (!hJob)
+    {
+        fRights &= ~JOB_OBJECT_ASSIGN_PROCESS;
+        hJob = OpenJobObjectA(fRights, FALSE /*bInheritHandle*/, pszTarget);
+        if (!hJob)
+            return errx(pThis->pCtx, 1, "Failed to open job '%s': %u", pszTarget, GetLastError());
+    }
+
+    /*
+     * Are we a member of this job?  If so, temporarily move
+     * to a different object so we don't kill ourselves.
+     */
+    if (IsProcessInJob(hJob, GetCurrentProcess(), &fIsInJob))
+    {
+        if (fIsInJob)
+        {
+            /** @todo this probably isn't working. */
+            if (pThis->cVerbosity >= 1)
+                kmk_builtin_ctx_printf(pThis->pCtx, 0,
+                                       "kmk_kill: Is myself (%u) a member of target job (%s)", getpid(), pszTarget);
+            if (!(fRights & JOB_OBJECT_ASSIGN_PROCESS))
+                rcExit = errx(pThis->pCtx, 1,
+                              "Is myself member of the target job and don't have the JOB_OBJECT_ASSIGN_PROCESS right.");
+            else
+            {
+                hTempJob = CreateJobObjectA(NULL, NULL);
+                if (hTempJob)
+                {
+                    if (!(AssignProcessToJobObject(hTempJob, GetCurrentProcess())))
+                        rcExit = errx(pThis->pCtx, 1, "AssignProcessToJobObject(temp, me) failed: %u", GetLastError());
+                }
+            }
+        }
+    }
+    else
+        rcExit = errx(pThis->pCtx, 1, "IsProcessInJob(%s, me) failed: %u", pszTarget, GetLastError());
+
+    /*
+     * Do the killing.
+     */
+    if (rcExit == 0)
+    {
+        if (!TerminateJobObject(hJob, DBG_TERMINATE_PROCESS))
+            rcExit = errx(pThis->pCtx, 1, "TerminateJobObject(%s) failed: %u", pszTarget, GetLastError());
+    }
+
+    /*
+     * Cleanup.
+     */
+    if (hTempJob)
+    {
+        if (!(AssignProcessToJobObject(hJob, GetCurrentProcess())))
+            rcExit = errx(pThis->pCtx, 1, "AssignProcessToJobObject(%s, me) failed: %u", pszTarget, GetLastError());
+        CloseHandle(hTempJob);
+    }
+    CloseHandle(hJob);
+
+    return rcExit;
+}
+
+
+/**
+ * Show usage.
+ */
+static void kmkKillUsage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+    kmk_builtin_ctx_printf(pCtx, fIsErr,
+                           "usage: %s [options] <job-name|process-name|pid> [options] [...]\n"
+                           "   or: %s --help\n"
+                           "   or: %s --version\n"
+                           "\n"
+                           "Options that decide what to kill next:\n"
+                           "  -p|--process  Processes, either by name or by PID. (default)\n"
+                           "  -j|--job      Windows jobs.\n"
+                           "\n"
+                           "Other options:\n"
+                           "  -q|--quiet    Quiet operation. Only real errors are displayed.\n"
+                           "  -v|--verbose  Increase verbosity.\n"
+                           ,
+                           pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName);
+}
+
+
+int kmk_builtin_kill(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+    int             rcExit = 0;
+    int             i;
+    KMKKILLGLOBALS  This;
+    enum { kTargetJobs, kTargetProcesses } enmTarget   = kTargetProcesses;
+
+    /* Globals. */
+    This.pCtx       = pCtx;
+    This.cVerbosity = 1;
+
+    /*
+     * Parse arguments.
+     */
+    if (argc <= 1)
+    {
+        kmkKillUsage(pCtx, 0);
+        return 1;
+    }
+    for (i = 1; i < argc; i++)
+    {
+        if (argv[i][0] == '-')
+        {
+            const char *pszValue;
+            const char *psz = &argv[i][1];
+            char chOpt;
+            chOpt = *psz++;
+            if (chOpt == '-')
+            {
+                /* Convert long to short option. */
+                if (!strcmp(psz, "job"))
+                    chOpt = 'j';
+                else if (!strcmp(psz, "process"))
+                    chOpt = 'p';
+                else if (!strcmp(psz, "quiet"))
+                    chOpt = 'q';
+                else if (!strcmp(psz, "verbose"))
+                    chOpt = 'v';
+                else if (!strcmp(psz, "help"))
+                    chOpt = '?';
+                else if (!strcmp(psz, "version"))
+                    chOpt = 'V';
+                else
+                {
+                    errx(pCtx, 2, "Invalid argument '%s'.", argv[i]);
+                    kmkKillUsage(pCtx, 1);
+                    return 2;
+                }
+                psz = "";
+            }
+
+            /*
+             * Requires value?
+             */
+            switch (chOpt)
+            {
+                /*case '':
+                    if (*psz)
+                        pszValue = psz;
+                    else if (++i < argc)
+                        pszValue = argv[i];
+                    else
+                        return errx(pCtx, 2, "The '-%c' option takes a value.", chOpt);
+                    break;*/
+
+                default:
+                    pszValue = NULL;
+                    break;
+            }
+
+
+            switch (chOpt)
+            {
+                /*
+                 * What to kill
+                 */
+                case 'j':
+                    enmTarget = kTargetJobs;
+                    break;
+
+                case 'p':
+                    enmTarget = kTargetProcesses;
+                    break;
+
+                /*
+                 * How to kill processes...
+                 */
+
+
+                /*
+                 * Noise level.
+                 */
+                case 'q':
+                    This.cVerbosity = 0;
+                    break;
+
+                case 'v':
+                    This.cVerbosity += 1;
+                    break;
+
+                /*
+                 * The mandatory version & help.
+                 */
+                case '?':
+                    kmkKillUsage(pCtx, 0);
+                    return rcExit;
+                case 'V':
+                    return kbuild_version(argv[0]);
+
+                /*
+                 * Invalid argument.
+                 */
+                default:
+                    errx(pCtx, 2, "Invalid argument '%s'.", argv[i]);
+                    kmkKillUsage(pCtx, 1);
+                    return 2;
+            }
+        }
+        else
+        {
+            /*
+             * Kill something.
+             */
+            int rcExitOne;
+            This.pszCur = argv[i];
+            if (enmTarget == kTargetJobs)
+                rcExitOne = kmkKillJob(&This, argv[i]);
+            else
+                rcExitOne = kmkKillProcess(&This, argv[i]);
+            if (rcExitOne != 0 && rcExit == 0)
+                rcExit = rcExitOne;
+        }
+    }
+
+    return rcExit;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_kill", NULL };
+    return kmk_builtin_kill(argc, argv, envp, &Ctx);
+}
+#endif
+
diff --git a/src/kmk/kmkbuiltin/ln.c b/src/kmk/kmkbuiltin/ln.c
new file mode 100644
index 0000000..4f80475
--- /dev/null
+++ b/src/kmk/kmkbuiltin/ln.c
@@ -0,0 +1,287 @@
+/*-
+ * Copyright (c) 1987, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char const copyright[] =
+"@(#) Copyright (c) 1987, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)ln.c	8.2 (Berkeley) 3/31/94";
+#endif /* not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/bin/ln/ln.c,v 1.33 2005/02/09 17:37:37 ru Exp $");
+#endif /* no $id */
+
+#define FAKES_NO_GETOPT_H /* bird */
+#include "config.h"
+#ifndef _MSC_VER
+# include <sys/param.h>
+#endif
+#include <sys/stat.h>
+
+#include "err.h"
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "getopt_r.h"
+#ifdef _MSC_VER
+# include "mscfakes.h"
+#endif
+#include "kmkbuiltin.h"
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct LNINSTANCE
+{
+    PKMKBUILTINCTX pCtx;
+    int	fflag;				/* Unlink existing files. */
+    int	hflag;				/* Check new name for symlink first. */
+    int	iflag;				/* Interactive mode. */
+    int	sflag;				/* Symbolic, not hard, link. */
+    int	vflag;				/* Verbose output. */
+    int (*linkf)(const char *, const char *); /* System link call. */
+    char	linkch;
+} LNINSTANCE;
+typedef LNINSTANCE *PLNINSTANCE;
+
+static struct option long_options[] =
+{
+    { "help",   					no_argument, 0, 261 },
+    { "version",   					no_argument, 0, 262 },
+    { 0, 0,	0, 0 },
+};
+
+
+static int	linkit(PLNINSTANCE,const char *, const char *, int);
+static int	usage(PKMKBUILTINCTX, int);
+
+
+int
+kmk_builtin_ln(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+	LNINSTANCE This;
+	struct getopt_state_r gos;
+	struct stat sb;
+	char *sourcedir;
+	int ch, exitval;
+
+	/* initialize globals. */
+	This.pCtx = pCtx;
+	This.fflag = 0;
+	This.hflag = 0;
+	This.iflag = 0;
+	This.sflag = 0;
+	This.vflag = 0;
+	This.linkch = 0;
+	This.linkf = NULL;
+
+	getopt_initialize_r(&gos, argc, argv, "fhinsv", long_options, envp, pCtx);
+	while ((ch = getopt_long_r(&gos, NULL)) != -1)
+		switch (ch) {
+		case 'f':
+			This.fflag = 1;
+			This.iflag = 0;
+			break;
+		case 'h':
+		case 'n':
+			This.hflag = 1;
+			break;
+		case 'i':
+			This.iflag = 1;
+			This.fflag = 0;
+			break;
+		case 's':
+			This.sflag = 1;
+			break;
+		case 'v':
+			This.vflag = 1;
+			break;
+		case 261:
+			usage(pCtx, 0);
+			return 0;
+		case 262:
+			return kbuild_version(argv[0]);
+		case '?':
+		default:
+			return usage(pCtx, 1);
+		}
+
+	argv += gos.optind;
+	argc -= gos.optind;
+
+	This.linkf = This.sflag ? symlink : link;
+	This.linkch = This.sflag ? '-' : '=';
+
+	switch(argc) {
+	case 0:
+		return usage(pCtx, 1);
+		/* NOTREACHED */
+	case 1:				/* ln target */
+		return linkit(&This, argv[0], ".", 1);
+	case 2:				/* ln target source */
+		return linkit(&This, argv[0], argv[1], 0);
+	default:
+		;
+	}
+					/* ln target1 target2 directory */
+	sourcedir = argv[argc - 1];
+	if (This.hflag && lstat(sourcedir, &sb) == 0 && S_ISLNK(sb.st_mode)) {
+		/*
+		 * We were asked not to follow symlinks, but found one at
+		 * the target--simulate "not a directory" error
+		 */
+		errno = ENOTDIR;
+		return err(pCtx, 1, "st_mode: %s", sourcedir);
+	}
+	if (stat(sourcedir, &sb))
+		return err(pCtx, 1, "stat: %s", sourcedir);
+	if (!S_ISDIR(sb.st_mode))
+		return usage(pCtx, 1);
+	for (exitval = 0; *argv != sourcedir; ++argv)
+		exitval |= linkit(&This, *argv, sourcedir, 1);
+	return exitval;
+}
+
+static int
+linkit(PLNINSTANCE pThis, const char *target, const char *source, int isdir)
+{
+	struct stat sb;
+	const char *p;
+	int ch, exists, first;
+	char path[PATH_MAX];
+
+	if (!pThis->sflag) {
+		/* If target doesn't exist, quit now. */
+		if (stat(target, &sb)) {
+			warn(pThis->pCtx, "stat: %s", target);
+			return (1);
+		}
+		/* Only symbolic links to directories. */
+		if (S_ISDIR(sb.st_mode)) {
+			errno = EISDIR;
+			warn(pThis->pCtx, "st_mode: %s", target);
+			return (1);
+		}
+	}
+
+	/*
+	 * If the source is a directory (and not a symlink if hflag),
+	 * append the target's name.
+	 */
+	if (isdir ||
+	    (lstat(source, &sb) == 0 && S_ISDIR(sb.st_mode)) ||
+	    (!pThis->hflag && stat(source, &sb) == 0 && S_ISDIR(sb.st_mode))) {
+#if defined(_MSC_VER) || defined(__OS2__)
+		char *p2 = strrchr(target, '\\');
+		p = strrchr(target, '/');
+		if (p2 != NULL && (p == NULL || p2 > p))
+			p = p2;
+		if (p == NULL)
+#else
+		if ((p = strrchr(target, '/')) == NULL)
+#endif
+			p = target;
+		else
+			++p;
+		if (snprintf(path, sizeof(path), "%s/%s", source, p) >=
+		    (ssize_t)sizeof(path)) {
+			errno = ENAMETOOLONG;
+			warn(pThis->pCtx, "snprintf: %s", target);
+			return (1);
+		}
+		source = path;
+	}
+
+	exists = !lstat(source, &sb);
+	/*
+	 * If the file exists, then unlink it forcibly if -f was specified
+	 * and interactively if -i was specified.
+	 */
+	if (pThis->fflag && exists) {
+		if (unlink(source)) {
+			warn(pThis->pCtx, "unlink: %s", source);
+			return (1);
+		}
+	} else if (pThis->iflag && exists) {
+		fflush(stdout);
+		fprintf(stderr, "replace %s? ", source);
+
+		first = ch = getchar();
+		while(ch != '\n' && ch != EOF)
+			ch = getchar();
+		if (first != 'y' && first != 'Y') {
+			kmk_builtin_ctx_printf(pThis->pCtx, 1, "not replaced\n");
+			return (1);
+		}
+
+		if (unlink(source)) {
+			warn(pThis->pCtx, "unlink: %s", source);
+			return (1);
+		}
+	}
+
+	/* Attempt the link. */
+	if ((*pThis->linkf)(target, source)) {
+		warn(pThis->pCtx, "%s: %s", pThis->linkf == link ? "link" : "symlink", source);
+		return (1);
+	}
+	if (pThis->vflag)
+		kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s %c> %s\n", source, pThis->linkch, target);
+	return (0);
+}
+
+static int
+usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+	kmk_builtin_ctx_printf(pCtx,fIsErr,
+		"usage: %s [-fhinsv] source_file [target_file]\n"
+		"   or: %s [-fhinsv] source_file ... target_dir\n"
+		"   or: %s source_file target_file\n"
+		"   or: %s --help\n"
+		"   or: %s --version\n",
+		pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName,
+		pCtx->pszProgName, pCtx->pszProgName);
+	return 1;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+	KMKBUILTINCTX Ctx = { "kmk_ln", NULL };
+	return kmk_builtin_ln(argc, argv, envp, &Ctx);
+}
+#endif
+
diff --git a/src/kmk/kmkbuiltin/md5sum.c b/src/kmk/kmkbuiltin/md5sum.c
new file mode 100644
index 0000000..dc8d497
--- /dev/null
+++ b/src/kmk/kmkbuiltin/md5sum.c
@@ -0,0 +1,874 @@
+/* $Id: md5sum.c 3219 2018-03-30 22:30:15Z bird $ */
+/** @file
+ * md5sum.
+ */
+
+/*
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "config.h"
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+#ifdef _MSC_VER
+# include <io.h>
+#else
+# include <unistd.h>
+#endif
+#include <sys/stat.h>
+#include "err.h"
+#include "kmkbuiltin.h"
+#include "../../lib/md5.h"
+#include <k/kTypes.h>
+
+/*#define MD5SUM_USE_STDIO*/
+
+
+/**
+ * Prints the usage and return 1.
+ */
+static int usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+    kmk_builtin_ctx_printf(pCtx, fIsErr,
+                           "usage: md5sum [-bt] [-o list-file] file(s)\n"
+                           "   or: md5sum [-btwq] -c list-file(s)\n"
+                           "   or: md5sum [-btq] -C MD5 file\n"
+                           "\n"
+                           " -c, --check       Check MD5 and files found in the specified list file(s).\n"
+                           "                   The default is to compute MD5 sums of the specified files\n"
+                           "                   and print them to stdout in list form.\n"
+                           " -C, --check-file  This is followed by an MD5 sum and the file to check.\n"
+                           " -b, --binary      Read files in binary mode. (default)\n"
+                           " -t, --text        Read files in text mode.\n"
+                           " -m, --manifest    Output in kBuild fetch 'manifest' format.\n"
+                           " -p, --progress    Show progress indicator on large files.\n"
+                           " -o, --output      Name of the output list file. Useful with -p.\n"
+                           " -q, --status      Be quiet.\n"
+                           " -w, --warn        Ignored. Always warn, unless quiet.\n"
+                           " -h, --help        This usage info.\n"
+                           " -v, --version     Show version information and exit.\n"
+                           );
+    return 1;
+}
+
+
+/**
+ * Makes a string out of the given digest.
+ *
+ * @param   pDigest     The MD5 digest.
+ * @param   pszDigest   Where to put the digest string. Must be able to
+ *                      hold at least 33 bytes.
+ */
+static void digest_to_string(unsigned char pDigest[16], char *pszDigest)
+{
+    unsigned i;
+    for (i = 0; i < 16; i++)
+    {
+        static char s_achDigits[17] = "0123456789abcdef";
+        pszDigest[i*2]     = s_achDigits[(pDigest[i] >> 4)];
+        pszDigest[i*2 + 1] = s_achDigits[(pDigest[i] & 0xf)];
+    }
+    pszDigest[i*2] = '\0';
+}
+
+
+/**
+ * Attempts to convert a string to a MD5 digest.
+ *
+ * @returns 0 on success, 1-based position of the failure first error.
+ * @param   pszDigest   The string to interpret.
+ * @param   pDigest     Where to put the MD5 digest.
+ */
+static int string_to_digest(const char *pszDigest, unsigned char pDigest[16])
+{
+    unsigned i;
+    unsigned iBase = 1;
+
+    /* skip blanks */
+    while (     *pszDigest == ' '
+           ||   *pszDigest == '\t'
+           ||   *pszDigest == '\n'
+           ||   *pszDigest == '\r')
+        pszDigest++, iBase++;
+
+    /* convert the digits. */
+    memset(pDigest, 0, 16);
+    for (i = 0; i < 32; i++, pszDigest++)
+    {
+        int iDigit;
+        if (*pszDigest >= '0' && *pszDigest <= '9')
+            iDigit = *pszDigest - '0';
+        else if (*pszDigest >= 'a' && *pszDigest <= 'f')
+            iDigit = *pszDigest - 'a' + 10;
+        else if (*pszDigest >= 'A' && *pszDigest <= 'F')
+            iDigit = *pszDigest - 'A' + 10;
+        else
+            return i + iBase;
+        if (i & 1)
+            pDigest[i >> 1] |= iDigit;
+        else
+            pDigest[i >> 1] |= iDigit << 4;
+    }
+
+    /* the rest of the string must now be blanks. */
+    while (     *pszDigest == ' '
+           ||   *pszDigest == '\t'
+           ||   *pszDigest == '\n'
+           ||   *pszDigest == '\r')
+        pszDigest++, i++;
+
+    return *pszDigest ? i + iBase : 0;
+}
+
+
+/**
+ * Opens the specified file for md5 sum calculation.
+ *
+ * @returns Opaque pointer on success, NULL and errno on failure.
+ * @param   pszFilename     The filename.
+ * @param   fText           Whether text or binary mode should be used.
+ */
+static void *open_file(const char *pszFilename, unsigned fText)
+{
+#if defined(MD5SUM_USE_STDIO)
+    FILE *pFile;
+
+    errno = 0;
+    pFile = fopen(pszFilename,
+                  fText ? "r"  KMK_FOPEN_NO_INHERIT_MODE
+                        : "rb" KMK_FOPEN_NO_INHERIT_MODE);
+    if (!pFile && errno == EINVAL && !fText)
+        pFile = fopen(pszFilename, "r" KMK_FOPEN_NO_INHERIT_MODE);
+    return pFile;
+
+#else
+    int fd;
+    int fFlags;
+
+    /* figure out the appropriate flags. */
+    fFlags = O_RDONLY | KMK_OPEN_NO_INHERIT;
+#ifdef O_SEQUENTIAL
+    fFlags |= _O_SEQUENTIAL;
+#elif defined(_O_SEQUENTIAL)
+    fFlags |= _O_SEQUENTIAL;
+#endif
+#ifdef O_BINARY
+    if (!fText)     fFlags |= O_BINARY;
+#elif defined(_O_BINARY)
+    if (!fText)     fFlags |= _O_BINARY;
+#endif
+#ifdef O_TEXT
+    if (fText)      fFlags |= O_TEXT;
+#elif defined(O_TEXT)
+    if (fText)      fFlags |= _O_TEXT;
+#else
+    (void)fText;
+#endif
+
+    errno = 0;
+    fd = open(pszFilename, fFlags, 0755);
+    if (fd >= 0)
+    {
+        int *pFd = malloc(sizeof(*pFd));
+        if (pFd)
+        {
+            *pFd = fd;
+            return pFd;
+        }
+        close(fd);
+        errno = ENOMEM;
+    }
+
+    return NULL;
+#endif
+}
+
+
+/**
+ * Closes a file opened by open_file.
+ *
+ * @param   pvFile          The opaque pointer returned by open_file.
+ */
+static void close_file(void *pvFile)
+{
+#if defined(MD5SUM_USE_STDIO)
+    fclose((FILE *)pvFile);
+#else
+    close(*(int *)pvFile);
+    free(pvFile);
+#endif
+}
+
+
+/**
+ * Reads from a file opened by open_file.
+ *
+ * @returns Number of bytes read on success.
+ *          0 on EOF.
+ *          Negated errno on read error.
+ * @param   pvFile          The opaque pointer returned by open_file.
+ * @param   pvBuf           Where to put the number of read bytes.
+ * @param   cbBuf           The max number of bytes to read.
+ *                          Must be less than a INT_MAX.
+ */
+static int read_file(void *pvFile, void *pvBuf, size_t cbBuf)
+{
+#if defined(MD5SUM_USE_STDIO)
+    int cb;
+
+    errno = 0;
+    cb = (int)fread(pvBuf, 1, cbBuf, (FILE *)pvFile);
+    if (cb >= 0)
+        return (int)cb;
+    if (!errno)
+        return -EINVAL;
+    return -errno;
+#else
+    int cb;
+
+    errno = 0;
+    cb = (int)read(*(int *)pvFile, pvBuf, (int)cbBuf);
+    if (cb >= 0)
+        return (int)cb;
+    if (!errno)
+        return -EINVAL;
+    return -errno;
+#endif
+}
+
+
+/**
+ * Gets the size of the file.
+ * This is informational and not necessarily 100% accurate.
+ *
+ * @returns File size.
+ * @param   pvFile          The opaque pointer returned by open_file
+ */
+static KU64 size_file(void *pvFile)
+{
+#if defined(_MSC_VER)
+    __int64 cb;
+# if defined(MD5SUM_USE_STDIO)
+    cb = _filelengthi64(fileno((FILE *)pvFile));
+# else
+    cb = _filelengthi64(*(int *)pvFile);
+# endif
+    if (cb >= 0)
+        return cb;
+
+#elif defined(MD5SUM_USE_STDIO)
+    struct stat st;
+    if (!fstat(fileno((FILE *)pvFile), &st))
+        return st.st_size;
+
+#else
+    struct stat st;
+    if (!fstat(*(int *)pvFile, &st))
+        return st.st_size;
+#endif
+    return 1024;
+}
+
+
+/**
+ * Calculates the md5sum of the sepecified file stream.
+ *
+ * @returns errno on failure, 0 on success.
+ * @param   pvFile      The file stream.
+ * @param   pDigest     Where to store the MD5 digest.
+ * @param   fProgress   Whether to show a progress bar.
+ * @param   pcbFile     Where to return the file size. Optional.
+ */
+static int calc_md5sum(void *pvFile, unsigned char pDigest[16], unsigned fProgress, KU64 *pcbFile)
+{
+    int cb;
+    int rc = 0;
+    struct MD5Context Ctx;
+    unsigned uPercent = 0;
+    KU64 off = 0;
+    KU64 const cbFile = size_file(pvFile);
+
+    /* Get a decent sized buffer assuming we'll be spending more time reading
+       from the storage than doing MD5 sums.  (2MB was choosen based on recent
+       SATA storage benchmarks which used that block size for sequential
+       tests.) We align the buffer address on a 16K boundrary to avoid most
+       transfer alignment issues. */
+    char        *pabBufAligned;
+    size_t const cbBufAlign = 16*1024 - 1;
+    size_t const cbBufMax = 2048*1024;
+    size_t       cbBuf    = cbFile >= cbBufMax ? cbBufMax : ((size_t)cbFile + cbBufAlign) & ~(size_t)cbBufAlign;
+    char        *pabBuf   = (char *)malloc(cbBuf + cbBufAlign);
+    if (pabBuf)
+        pabBufAligned = (char *)(((uintptr_t)pabBuf + cbBufAlign) & ~(uintptr_t)cbBufAlign );
+    else
+    {
+        do
+        {
+            cbBuf /= 2;
+            pabBuf = (char *)malloc(cbBuf);
+        } while (!pabBuf && cbBuf > 4096);
+        if (!pabBuf)
+            return ENOMEM;
+        pabBufAligned = pabBuf;
+    }
+
+    if (cbFile < cbBuf * 4)
+        fProgress = 0;
+
+    MD5Init(&Ctx);
+    for (;;)
+    {
+        /* process a chunk. */
+        cb = read_file(pvFile, pabBufAligned, cbBuf);
+        if (cb > 0)
+            MD5Update(&Ctx, (unsigned char *)pabBufAligned, cb);
+        else if (!cb)
+            break;
+        else
+        {
+            rc = -cb;
+            break;
+        }
+        off += cb;
+
+        /* update the progress indicator. */
+        if (fProgress)
+        {
+            unsigned uNewPercent;
+            uNewPercent = (unsigned)(((double)off / cbFile) * 100);
+            if (uNewPercent != uPercent)
+            {
+                if (uPercent)
+                    printf("\b\b\b\b");
+                printf("%3d%%", uNewPercent);
+                fflush(stdout);
+                uPercent = uNewPercent;
+            }
+        }
+    }
+    MD5Final(pDigest, &Ctx);
+
+    if (pcbFile)
+        *pcbFile = off;
+
+    if (fProgress)
+        printf("\b\b\b\b    \b\b\b\b");
+
+    free(pabBuf);
+    return rc;
+}
+
+
+/**
+ * Checks the if the specified digest matches the digest of the file stream.
+ *
+ * @returns 0 on match, -1 on mismatch, errno value (positive) on failure.
+ * @param   pvFile      The file stream.
+ * @param   Digest      The MD5 digest.
+ * @param   fProgress   Whether to show an progress indicator on large files.
+ */
+static int check_md5sum(void *pvFile, unsigned char Digest[16], unsigned fProgress)
+{
+    unsigned char DigestFile[16];
+    int rc;
+
+    rc = calc_md5sum(pvFile, DigestFile, fProgress, NULL);
+    if (!rc)
+        rc = memcmp(Digest, DigestFile, 16) ? -1 : 0;
+    return rc;
+}
+
+
+/**
+ * Checks if the specified file matches the given MD5 digest.
+ *
+ * @returns 0 if it matches, 1 if it doesn't or an error occurs.
+ * @param   pCtx        The command execution context.
+ * @param   pszFilename The name of the file to check.
+ * @param   pszDigest   The MD5 digest string.
+ * @param   fText       Whether to open the file in text or binary mode.
+ * @param   fQuiet      Whether to go about this in a quiet fashion or not.
+ * @param   fProgress   Whether to show an progress indicator on large files.
+ */
+static int check_one_file(PKMKBUILTINCTX pCtx, const char *pszFilename, const char *pszDigest, unsigned fText,
+                          unsigned fQuiet, unsigned fProgress)
+{
+    unsigned char Digest[16];
+    int rc;
+
+    rc = string_to_digest(pszDigest, Digest);
+    if (!rc)
+    {
+        void *pvFile;
+
+        pvFile = open_file(pszFilename, fText);
+        if (pvFile)
+        {
+            if (!fQuiet)
+                kmk_builtin_ctx_printf(pCtx, 0, "%s: ", pszFilename);
+            rc = check_md5sum(pvFile, Digest, fProgress);
+            close_file(pvFile);
+            if (!fQuiet)
+            {
+                kmk_builtin_ctx_printf(pCtx, 0, "%s\n", !rc ? "OK" : rc < 0 ? "FAILURE" : "ERROR");
+                if (rc > 0)
+                    errx(pCtx, 1, "Error reading '%s': %s", pszFilename, strerror(rc));
+            }
+            if (rc)
+                rc = 1;
+        }
+        else
+        {
+            if (!fQuiet)
+                errx(pCtx, 1, "Failed to open '%s': %s", pszFilename, strerror(errno));
+            rc = 1;
+        }
+    }
+    else
+    {
+        errx(pCtx, 1, "Malformed MD5 digest '%s'!", pszDigest);
+        errx(pCtx, 1, "                      %*s^", rc - 1, "");
+        rc = 1;
+    }
+
+    return rc;
+}
+
+
+/**
+ * Checks the specified md5.lst file.
+ *
+ * @returns 0 if all checks out file, 1 if one or more fails or there are read errors.
+ * @param   pCtx            The command execution context.
+ * @param   pszFilename     The name of the file.
+ * @param   fText           The default mode, text or binary. Only used when fBinaryTextOpt is true.
+ * @param   fBinaryTextOpt  Whether a -b or -t option was specified and should be used.
+ * @param   fQuiet          Whether to be quiet.
+ * @param   fProgress       Whether to show an progress indicator on large files.
+ */
+static int check_files(PKMKBUILTINCTX pCtx, const char *pszFilename, int fText, int fBinaryTextOpt,
+                       int fQuiet, unsigned fProgress)
+{
+    int rc = 0;
+    FILE *pFile;
+
+    /*
+     * Try open the md5.lst file and process it line by line.
+     */
+    pFile = fopen(pszFilename, "r" KMK_FOPEN_NO_INHERIT_MODE);
+    if (pFile)
+    {
+        int iLine = 0;
+        char szLine[8192];
+        while (fgets(szLine, sizeof(szLine), pFile))
+        {
+            const char *pszDigest;
+            int fLineText;
+            char *psz;
+            int rc2;
+
+            iLine++;
+            psz = szLine;
+
+            /* leading blanks */
+            while (*psz == ' ' || *psz == '\t' || *psz == '\n')
+                psz++;
+
+            /* skip blank or comment lines. */
+            if (!*psz || *psz == '#' || *psz == ';' || *psz == '/')
+                continue;
+
+            /* remove the trailing newline. */
+            rc2 = (int)strlen(psz);
+            if (psz[rc2 - 1] == '\n')
+                psz[rc2 - (rc2 >= 2 && psz[rc2 - 2] == '\r' ? 2 : 1)] = '\0';
+
+            /* skip to the end of the digest and terminate it. */
+            pszDigest = psz;
+            while (*psz != ' ' && *psz != '\t' && *psz)
+                psz++;
+            if (*psz)
+            {
+                *psz++ = '\0';
+
+                /* blanks */
+                while (*psz == ' ' || *psz == '\t' || *psz == '\n')
+                    psz++;
+
+                /* check for binary asterix */
+                if (*psz != '*')
+                    fLineText = fBinaryTextOpt ? fText : 0;
+                else
+                {
+                    fLineText = 0;
+                    psz++;
+                }
+                if (*psz)
+                {
+                    unsigned char Digest[16];
+
+                    /* the rest is filename. */
+                    pszFilename = psz;
+
+                    /*
+                     * Do the job.
+                     */
+                    rc2 = string_to_digest(pszDigest, Digest);
+                    if (!rc2)
+                    {
+                        void *pvFile = open_file(pszFilename, fLineText);
+                        if (pvFile)
+                        {
+                            if (!fQuiet)
+                                kmk_builtin_ctx_printf(pCtx, 0, "%s: ", pszFilename);
+                            rc2 = check_md5sum(pvFile, Digest, fProgress);
+                            close_file(pvFile);
+                            if (!fQuiet)
+                            {
+                                kmk_builtin_ctx_printf(pCtx, 0, "%s\n", !rc2 ? "OK" : rc2 < 0 ? "FAILURE" : "ERROR");
+                                if (rc2 > 0)
+                                    errx(pCtx, 1, "Error reading '%s': %s", pszFilename, strerror(rc2));
+                            }
+                            if (rc2)
+                                rc = 1;
+                        }
+                        else
+                        {
+                            if (!fQuiet)
+                                errx(pCtx, 1, "Failed to open '%s': %s", pszFilename, strerror(errno));
+                            rc = 1;
+                        }
+                    }
+                    else if (!fQuiet)
+                    {
+                        errx(pCtx, 1, "%s (%d): Ignoring malformed digest '%s' (digest)", pszFilename, iLine, pszDigest);
+                        errx(pCtx, 1, "%s (%d):                            %*s^", pszFilename, iLine, rc2 - 1, "");
+                    }
+                }
+                else if (!fQuiet)
+                    errx(pCtx, 1, "%s (%d): Ignoring malformed line!", pszFilename, iLine);
+            }
+            else if (!fQuiet)
+                errx(pCtx, 1, "%s (%d): Ignoring malformed line!", pszFilename, iLine);
+        } /* while more lines */
+
+        fclose(pFile);
+    }
+    else
+    {
+        errx(pCtx, 1, "Failed to open '%s': %s", pszFilename, strerror(errno));
+        rc = 1;
+    }
+
+    return rc;
+}
+
+
+/**
+ * Calculates the MD5 sum for one file and prints it.
+ *
+ * @returns 0 on success, 1 on any kind of failure.
+ * @param   pCtx            Command context.
+ * @param   pszFilename     The file to process.
+ * @param   fText           The mode to open the file in.
+ * @param   fQuiet          Whether to be quiet or verbose about errors.
+ * @param   fManifest       Whether to format the output like a fetch manifest.
+ * @param   fProgress       Whether to show an progress indicator on large files.
+ * @param   pOutput         Where to write the list. Progress is always written to stdout.
+ */
+static int md5sum_file(PKMKBUILTINCTX pCtx, const char *pszFilename, unsigned fText, unsigned fQuiet, unsigned fProgress,
+                       unsigned fManifest, FILE *pOutput)
+{
+    int rc;
+    void *pvFile;
+
+    /*
+     * Calculate and print the MD5 sum for one file.
+     */
+    pvFile = open_file(pszFilename, fText);
+    if (pvFile)
+    {
+        unsigned char Digest[16];
+        KU64 cbFile = 0;
+
+        if (fProgress && pOutput)
+            fprintf(stdout, "%s: ", pszFilename);
+
+        rc = calc_md5sum(pvFile, Digest, fProgress, &cbFile);
+        close_file(pvFile);
+
+        if (fProgress && pOutput)
+        {
+            size_t cch = strlen(pszFilename) + 2;
+            while (cch-- > 0)
+                fputc('\b', stdout);
+        }
+
+        if (!rc)
+        {
+            char szDigest[36];
+            digest_to_string(Digest, szDigest);
+            if (!fManifest)
+            {
+                if (pOutput)
+                    fprintf(pOutput, "%s %s%s\n", szDigest, fText ? "" : "*", pszFilename);
+                kmk_builtin_ctx_printf(pCtx, 0, "%s %s%s\n", szDigest, fText ? "" : "*", pszFilename);
+            }
+            else
+            {
+                if (pOutput)
+                    fprintf(pOutput, "%s_SIZE := %" KU64_PRI "\n%s_MD5  := %s\n", pszFilename, cbFile, pszFilename, szDigest);
+                kmk_builtin_ctx_printf(pCtx, 0, "%s_SIZE := %" KU64_PRI "\n%s_MD5  := %s\n",
+                                       pszFilename, cbFile, pszFilename, szDigest);
+            }
+            if (pOutput)
+                fflush(pOutput);
+        }
+        else
+        {
+            if (!fQuiet)
+                errx(pCtx, 1, "Failed to open '%s': %s", pszFilename, strerror(rc));
+            rc = 1;
+        }
+    }
+    else
+    {
+        if (!fQuiet)
+            errx(pCtx, 1, "Failed to open '%s': %s", pszFilename, strerror(errno));
+        rc = 1;
+    }
+    return rc;
+}
+
+
+
+/**
+ * md5sum, calculates and checks the md5sum of files.
+ * Somewhat similar to the GNU coreutil md5sum command.
+ */
+int kmk_builtin_md5sum(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+    int i;
+    int rc = 0;
+    int fText = 0;
+    int fBinaryTextOpt = 0;
+    int fQuiet = 0;
+    int fChecking = 0;
+    int fManifest  = 0;
+    int fProgress = 0;
+    int fNoMoreOptions = 0;
+    const char *pszOutput = NULL;
+    FILE *pOutput = NULL;
+
+    /*
+     * Print usage if no arguments.
+     */
+    if (argc <= 1)
+        return usage(pCtx, 1);
+
+    /*
+     * Process the arguments, FIFO style.
+     */
+    i = 1;
+    while (i < argc)
+    {
+        char *psz = argv[i];
+        if (!fNoMoreOptions && psz[0] == '-' && psz[1] == '-' && !psz[2])
+            fNoMoreOptions = 1;
+        else if (*psz == '-' && !fNoMoreOptions)
+        {
+            psz++;
+
+            /* convert long options for gnu just for fun */
+            if (*psz == '-')
+            {
+                if (!strcmp(psz, "-binary"))
+                    psz = "b";
+                else if (!strcmp(psz, "-text"))
+                    psz = "t";
+                else if (!strcmp(psz, "-check"))
+                    psz = "c";
+                else if (!strcmp(psz, "-check-file"))
+                    psz = "C";
+                else if (!strcmp(psz, "-manifest"))
+                    psz = "m";
+                else if (!strcmp(psz, "-output"))
+                    psz = "o";
+                else if (!strcmp(psz, "-progress"))
+                    psz = "p";
+                else if (!strcmp(psz, "-status"))
+                    psz = "q";
+                else if (!strcmp(psz, "-warn"))
+                    psz = "w";
+                else if (!strcmp(psz, "-help"))
+                    psz = "h";
+                else if (!strcmp(psz, "-version"))
+                    psz = "v";
+            }
+
+            /* short options */
+            do
+            {
+                switch (*psz)
+                {
+                    case 'c':
+                        fChecking = 1;
+                        break;
+
+                    case 'b':
+                        fText = 0;
+                        fBinaryTextOpt = 1;
+                        break;
+
+                    case 't':
+                        fText = 1;
+                        fBinaryTextOpt = 1;
+                        break;
+
+                    case 'm':
+                        fManifest = 1;
+                        break;
+
+                    case 'p':
+                        fProgress = 1 && isatty(fileno(stdout))
+#ifndef KMK_BUILTIN_STANDALONE
+                                 && (!pCtx->pOut || !pCtx->pOut->syncout)
+#endif
+                                  ;
+                        break;
+
+                    case 'q':
+                        fQuiet = 1;
+                        break;
+
+                    case 'w':
+                        /* ignored */
+                        break;
+
+                    case 'h':
+                        usage(pCtx, 0);
+                        return 0;
+
+                    case 'v':
+                        return kbuild_version(argv[0]);
+
+                    /*
+                     * -C md5 file
+                     */
+                    case 'C':
+                    {
+                        const char *pszFilename;
+                        const char *pszDigest;
+
+                        if (psz[1])
+                            pszDigest = &psz[1];
+                        else if (i + 1 < argc)
+                            pszDigest = argv[++i];
+                        else
+                        {
+                            errx(pCtx, 1, "'-C' is missing the MD5 sum!");
+                            return 1;
+                        }
+                        if (i + 1 < argc)
+                            pszFilename = argv[++i];
+                        else
+                        {
+                            errx(pCtx, 1, "'-C' is missing the filename!");
+                            return 1;
+                        }
+
+                        rc |= check_one_file(pCtx, pszFilename, pszDigest, fText, fQuiet, fProgress && !fQuiet);
+                        psz = "\0";
+                        break;
+                    }
+
+                    /*
+                     * Output file.
+                     */
+                    case 'o':
+                    {
+                        if (fChecking)
+                        {
+                            errx(pCtx, 1, "'-o' cannot be used with -c or -C!");
+                            return 1;
+                        }
+
+                        if (psz[1])
+                            pszOutput = &psz[1];
+                        else if (i + 1 < argc)
+                            pszOutput = argv[++i];
+                        else
+                        {
+                            errx(pCtx, 1, "'-o' is missing the file name!");
+                            return 1;
+                        }
+
+                        psz = "\0";
+                        break;
+                    }
+
+                    default:
+                        errx(pCtx, 1, "Invalid option '%c'! (%s)", *psz, argv[i]);
+                        return usage(pCtx, 1);
+                }
+            } while (*++psz);
+        }
+        else if (fChecking)
+            rc |= check_files(pCtx, argv[i], fText, fBinaryTextOpt, fQuiet, fProgress && !fQuiet);
+        else
+        {
+            /* lazily open the output if specified. */
+            if (pszOutput)
+            {
+                if (pOutput)
+                    fclose(pOutput);
+                pOutput = fopen(pszOutput, "w" KMK_FOPEN_NO_INHERIT_MODE);
+                if (!pOutput)
+                {
+                    rc = err(pCtx, 1, "fopen(\"%s\", \"w" KMK_FOPEN_NO_INHERIT_MODE "\") failed", pszOutput);
+                    break;
+                }
+                pszOutput = NULL;
+            }
+
+            rc |= md5sum_file(pCtx, argv[i], fText, fQuiet, fProgress && !fQuiet && !fManifest, fManifest, pOutput);
+        }
+        i++;
+    }
+
+    if (pOutput)
+        fclose(pOutput);
+    return rc;
+}
+
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_md5sum", NULL };
+    return kmk_builtin_md5sum(argc, argv, envp, &Ctx);
+}
+#endif
+
+
diff --git a/src/kmk/kmkbuiltin/mkdir.c b/src/kmk/kmkbuiltin/mkdir.c
new file mode 100644
index 0000000..65e961f
--- /dev/null
+++ b/src/kmk/kmkbuiltin/mkdir.c
@@ -0,0 +1,302 @@
+/*
+ * Copyright (c) 1983, 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char const copyright[] =
+"@(#) Copyright (c) 1983, 1992, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)mkdir.c	8.2 (Berkeley) 1/25/94";
+#endif /* not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/bin/mkdir/mkdir.c,v 1.28 2004/04/06 20:06:48 markm Exp $");
+#endif
+
+#define FAKES_NO_GETOPT_H /* bird */
+#include "config.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "err.h"
+#include <errno.h>
+#include <assert.h>
+#ifndef _MSC_VER
+# include <libgen.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifndef __HAIKU__
+# include <sysexits.h>
+#endif
+#include <unistd.h>
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+#include "getopt_r.h"
+#ifdef __HAIKU__
+# include "haikufakes.h"
+#endif
+#ifdef _MSC_VER
+# include <malloc.h>
+# include "mscfakes.h"
+#endif
+#include "kmkbuiltin.h"
+
+
+static struct option long_options[] =
+{
+    { "help",   					no_argument, 0, 261 },
+    { "version",   					no_argument, 0, 262 },
+    { 0, 0,	0, 0 },
+};
+
+extern mode_t g_fUMask;
+
+extern void * bsd_setmode(const char *p);
+extern mode_t bsd_getmode(const void *bbox, mode_t omode);
+
+static int	build(PKMKBUILTINCTX pCtx, char *, mode_t, int);
+static int	usage(PKMKBUILTINCTX pCtx, int fIsErr);
+
+
+int
+kmk_builtin_mkdir(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+	struct getopt_state_r gos;
+	int ch, exitval, success, pflag, vflag;
+	mode_t omode, *set = (mode_t *)NULL;
+	char *mode;
+
+	omode = pflag = vflag = 0;
+	mode = NULL;
+
+	getopt_initialize_r(&gos, argc, argv, "m:pv", long_options, envp, pCtx);
+	while ((ch = getopt_long_r(&gos, NULL)) != -1)
+		switch(ch) {
+		case 'm':
+			mode = gos.optarg;
+			break;
+		case 'p':
+			pflag = 1;
+			break;
+		case 'v':
+			vflag = 1;
+			break;
+		case 261:
+			usage(pCtx, 0);
+			return 0;
+		case 262:
+			return kbuild_version(argv[0]);
+		case '?':
+		default:
+			return usage(pCtx, 1);
+		}
+
+	argc -= gos.optind;
+	argv += gos.optind;
+	if (argv[0] == NULL)
+		return usage(pCtx, 1);
+
+	if (mode == NULL) {
+		omode = S_IRWXU | S_IRWXG | S_IRWXO;
+	} else {
+		if ((set = bsd_setmode(mode)) == NULL)
+                        return errx(pCtx, 1, "invalid file mode: %s", mode);
+		omode = bsd_getmode(set, S_IRWXU | S_IRWXG | S_IRWXO);
+		free(set);
+	}
+
+	for (exitval = 0; *argv != NULL; ++argv) {
+		success = 1;
+		if (pflag) {
+			if (build(pCtx, *argv, omode, vflag))
+				success = 0;
+		} else if (mkdir(*argv, omode) < 0) {
+			if (errno == ENOTDIR || errno == ENOENT)
+				warn(pCtx, "mkdir: %s", dirname(*argv));
+			else
+                                warn(pCtx, "mkdir: %s", *argv);
+			success = 0;
+		} else if (vflag)
+			kmk_builtin_ctx_printf(pCtx, 0, "%s\n", *argv);
+
+		if (!success)
+			exitval = 1;
+		/*
+		 * The mkdir() and umask() calls both honor only the low
+		 * nine bits, so if you try to set a mode including the
+		 * sticky, setuid, setgid bits you lose them.  Don't do
+		 * this unless the user has specifically requested a mode,
+		 * as chmod will (obviously) ignore the umask.
+		 */
+		if (success && mode != NULL && chmod(*argv, omode) == -1) {
+			warn(pCtx, "chmod: %s", *argv);
+			exitval = 1;
+		}
+	}
+	return exitval;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+mode_t g_fUMask;
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_mkdir", NULL };
+    umask(g_fUMask = umask(0077));
+    return kmk_builtin_mkdir(argc, argv, envp, &Ctx);
+}
+#endif
+
+static int
+build(PKMKBUILTINCTX pCtx, char *path, mode_t omode, int vflag)
+{
+	struct stat sb;
+	mode_t numask, oumask;
+	int first, last, retval;
+	char *p;
+
+	const size_t len = strlen(path);
+	p = alloca(len + 1);
+	path = memcpy(p, path, len + 1);
+
+#if defined(_MSC_VER) || defined(__EMX__)
+	/* correct slashes. */
+	p = strchr(path, '\\');
+	while (p) {
+		*p++ = '/';
+		p = strchr(p, '\\');
+	}
+#endif
+
+	p = path;
+	oumask = 0;
+	retval = 0;
+#if defined(_MSC_VER) || defined(__EMX__)
+	if (    (    (p[0] >= 'A' && p[0] <= 'Z')
+	         ||  (p[0] >= 'a' && p[0] <= 'z'))
+	    && p[1] == ':')
+		p += 2; /* skip the drive letter */
+	else if (   p[0] == '/'
+	         && p[1] == '/'
+	         && p[2] != '/')
+	{
+		/* UNC */
+		p += 2;
+		while (*p && *p != '/') /* server */
+			p++;
+		while (*p == '/')
+			p++;
+		while (*p && *p != '/') /* share */
+			p++;
+	}
+#endif
+	if (p[0] == '/')		/* Skip leading '/'. */
+		++p;
+	for (first = 1, last = 0; !last ; ++p) {
+		if (p[0] == '\0')
+			last = 1;
+		else if (p[0] != '/')
+			continue;
+		*p = '\0';
+		if (!last && p[1] == '\0')
+			last = 1;
+		if (first) {
+			/*
+			 * POSIX 1003.2:
+			 * For each dir operand that does not name an existing
+			 * directory, effects equivalent to those cased by the
+			 * following command shall occcur:
+			 *
+			 * mkdir -p -m $(umask -S),u+wx $(dirname dir) &&
+			 *    mkdir [-m mode] dir
+			 *
+			 * We change the user's umask and then restore it,
+			 * instead of doing chmod's.
+			 */
+#ifdef KMK_BUILTIN_STANDALONE
+			oumask = umask(0077);
+#else
+			oumask = g_fUMask;
+			assert(oumask == umask(g_fUMask));
+#endif
+			numask = oumask & ~(S_IWUSR | S_IXUSR);
+			if (numask != oumask)
+			    (void)umask(numask);
+			first = 0;
+		}
+		if (last && oumask != numask)
+			(void)umask(oumask);
+		if (mkdir(path, last ? omode : S_IRWXU | S_IRWXG | S_IRWXO) < 0) {
+			if (errno == EEXIST || errno == EISDIR
+			    || errno == ENOSYS  /* (solaris crap) */
+			    || errno == EACCES /* (ditto) */) {
+				if (stat(path, &sb) < 0) {
+					warn(pCtx, "stat: %s", path);
+					retval = 1;
+					break;
+				}
+				if (!S_ISDIR(sb.st_mode)) {
+					if (last)
+						errno = EEXIST;
+					else
+						errno = ENOTDIR;
+					warn(pCtx, "st_mode: %s", path);
+					retval = 1;
+					break;
+				}
+			} else {
+				warn(pCtx, "mkdir: %s", path);
+				retval = 1;
+				break;
+			}
+		} else if (vflag)
+			kmk_builtin_ctx_printf(pCtx, 0, "%s\n", path);
+		if (!last)
+		    *p = '/';
+	}
+	if (!first && !last && oumask != numask)
+		(void)umask(oumask);
+	return (retval);
+}
+
+static int
+usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+	kmk_builtin_ctx_printf(pCtx, fIsErr,
+	                       "usage: %s [-pv] [-m mode] directory ...\n"
+	                       "   or: %s --help\n"
+	                       "   or: %s --version\n",
+	                       pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName);
+	return EX_USAGE;
+}
+
diff --git a/src/kmk/kmkbuiltin/mscfakes.c b/src/kmk/kmkbuiltin/mscfakes.c
new file mode 100644
index 0000000..7256cb6
--- /dev/null
+++ b/src/kmk/kmkbuiltin/mscfakes.c
@@ -0,0 +1,839 @@
+/* $Id: mscfakes.c 3387 2020-06-26 16:51:19Z bird $ */
+/** @file
+ * Fake Unix stuff for MSC.
+ */
+
+/*
+ * Copyright (c) 2005-2015 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "config.h"
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <io.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/timeb.h>
+#include "err.h"
+#include "mscfakes.h"
+
+#include "nt/ntutimes.h"
+#undef utimes
+#undef lutimes
+
+#include "console.h"
+
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static BOOL isPipeFd(int fd);
+
+
+/**
+ * Makes corrections to a directory path that ends with a trailing slash.
+ *
+ * @returns temporary buffer to free.
+ * @param   ppszPath    The path pointer. This is updated when necessary.
+ * @param   pfMustBeDir This is set if it must be a directory, otherwise it's cleared.
+ */
+static char *
+msc_fix_path(const char **ppszPath, int *pfMustBeDir)
+{
+    const char *pszPath = *ppszPath;
+    const char *psz;
+    char *pszNew;
+    *pfMustBeDir = 0;
+
+    /*
+     * Skip any compusory trailing slashes
+     */
+    if (pszPath[0] == '/' || pszPath[0] == '\\')
+    {
+        if (   (pszPath[1] == '/' || pszPath[1] == '\\')
+            &&  pszPath[2] != '/'
+            &&  pszPath[2] != '\\')
+            /* unc */
+            pszPath += 2;
+        else
+            /* root slash(es) */
+            pszPath++;
+    }
+    else if (   isalpha(pszPath[0])
+             && pszPath[1] == ':')
+    {
+        if (pszPath[2] == '/' || pszPath[2] == '\\')
+            /* drive w/ slash */
+            pszPath += 3;
+        else
+            /* drive relative path. */
+            pszPath += 2;
+    }
+    /* else: relative path, no skipping necessary. */
+
+    /*
+     * Any trailing slashes to drop off?
+     */
+    psz = strchr(pszPath, '\0');
+    if (pszPath <= psz)
+        return NULL;
+    if (   psz[-1] != '/'
+        || psz[-1] != '\\')
+        return NULL;
+
+    /* figure how many, make a copy and strip them off. */
+    while (     psz > pszPath
+           &&   (   psz[-1] == '/'
+                 || psz[-1] == '\\'))
+        psz--;
+    pszNew = strdup(pszPath);
+    pszNew[psz - pszPath] = '\0';
+
+    *pfMustBeDir = 1;
+    *ppszPath = pszNew; /* use this one */
+    return pszNew;
+}
+
+
+int
+birdSetErrno(unsigned dwErr)
+{
+    switch (dwErr)
+    {
+        default:
+        case ERROR_INVALID_FUNCTION:        errno = EINVAL; break;
+        case ERROR_FILE_NOT_FOUND:          errno = ENOENT; break;
+        case ERROR_PATH_NOT_FOUND:          errno = ENOENT; break;
+        case ERROR_TOO_MANY_OPEN_FILES:     errno = EMFILE; break;
+        case ERROR_ACCESS_DENIED:           errno = EACCES; break;
+        case ERROR_INVALID_HANDLE:          errno = EBADF; break;
+        case ERROR_ARENA_TRASHED:           errno = ENOMEM; break;
+        case ERROR_NOT_ENOUGH_MEMORY:       errno = ENOMEM; break;
+        case ERROR_INVALID_BLOCK:           errno = ENOMEM; break;
+        case ERROR_BAD_ENVIRONMENT:         errno = E2BIG; break;
+        case ERROR_BAD_FORMAT:              errno = ENOEXEC; break;
+        case ERROR_INVALID_ACCESS:          errno = EINVAL; break;
+        case ERROR_INVALID_DATA:            errno = EINVAL; break;
+        case ERROR_INVALID_DRIVE:           errno = ENOENT; break;
+        case ERROR_CURRENT_DIRECTORY:       errno = EACCES; break;
+        case ERROR_NOT_SAME_DEVICE:         errno = EXDEV; break;
+        case ERROR_NO_MORE_FILES:           errno = ENOENT; break;
+        case ERROR_LOCK_VIOLATION:          errno = EACCES; break;
+        case ERROR_BAD_NETPATH:             errno = ENOENT; break;
+        case ERROR_NETWORK_ACCESS_DENIED:   errno = EACCES; break;
+        case ERROR_BAD_NET_NAME:            errno = ENOENT; break;
+        case ERROR_FILE_EXISTS:             errno = EEXIST; break;
+        case ERROR_CANNOT_MAKE:             errno = EACCES; break;
+        case ERROR_FAIL_I24:                errno = EACCES; break;
+        case ERROR_INVALID_PARAMETER:       errno = EINVAL; break;
+        case ERROR_NO_PROC_SLOTS:           errno = EAGAIN; break;
+        case ERROR_DRIVE_LOCKED:            errno = EACCES; break;
+        case ERROR_BROKEN_PIPE:             errno = EPIPE; break;
+        case ERROR_DISK_FULL:               errno = ENOSPC; break;
+        case ERROR_INVALID_TARGET_HANDLE:   errno = EBADF; break;
+        case ERROR_WAIT_NO_CHILDREN:        errno = ECHILD; break;
+        case ERROR_CHILD_NOT_COMPLETE:      errno = ECHILD; break;
+        case ERROR_DIRECT_ACCESS_HANDLE:    errno = EBADF; break;
+        case ERROR_NEGATIVE_SEEK:           errno = EINVAL; break;
+        case ERROR_SEEK_ON_DEVICE:          errno = EACCES; break;
+        case ERROR_DIR_NOT_EMPTY:           errno = ENOTEMPTY; break;
+        case ERROR_NOT_LOCKED:              errno = EACCES; break;
+        case ERROR_BAD_PATHNAME:            errno = ENOENT; break;
+        case ERROR_MAX_THRDS_REACHED:       errno = EAGAIN; break;
+        case ERROR_LOCK_FAILED:             errno = EACCES; break;
+        case ERROR_ALREADY_EXISTS:          errno = EEXIST; break;
+        case ERROR_FILENAME_EXCED_RANGE:    errno = ENOENT; break;
+        case ERROR_NESTING_NOT_ALLOWED:     errno = EAGAIN; break;
+#ifdef EMLINK
+        case ERROR_TOO_MANY_LINKS:          errno = EMLINK; break;
+#endif
+    }
+
+    return -1;
+}
+
+char *dirname(char *path)
+{
+    /** @todo later */
+    return path;
+}
+
+
+int lchmod(const char *pszPath, mode_t mode)
+{
+    int rc = 0;
+    int fMustBeDir;
+    char *pszPathFree = msc_fix_path(&pszPath, &fMustBeDir);
+
+    /*
+     * Get the current attributes
+     */
+    DWORD fAttr = GetFileAttributes(pszPath);
+    if (fAttr == INVALID_FILE_ATTRIBUTES)
+        rc = birdSetErrno(GetLastError());
+    else if (fMustBeDir & !(fAttr & FILE_ATTRIBUTE_DIRECTORY))
+    {
+        errno = ENOTDIR;
+        rc = -1;
+    }
+    else
+    {
+        /*
+         * Modify the attributes and try set them.
+         */
+        if (mode & _S_IWRITE)
+        {
+            fAttr &= ~FILE_ATTRIBUTE_READONLY;
+            if (fAttr == 0)
+                fAttr = FILE_ATTRIBUTE_NORMAL;
+        }
+        else
+        {
+            fAttr &= ~FILE_ATTRIBUTE_NORMAL;
+            fAttr |= FILE_ATTRIBUTE_READONLY;
+        }
+        if (!SetFileAttributes(pszPath, fAttr))
+            rc = birdSetErrno(GetLastError());
+    }
+
+    if (pszPathFree)
+    {
+        int saved_errno = errno;
+        free(pszPathFree);
+        errno = saved_errno;
+    }
+    return rc;
+}
+
+
+int msc_chmod(const char *pszPath, mode_t mode)
+{
+    int rc = 0;
+    int fMustBeDir;
+    char *pszPathFree = msc_fix_path(&pszPath, &fMustBeDir);
+
+    /*
+     * Get the current attributes.
+     */
+    DWORD fAttr = GetFileAttributes(pszPath);
+    if (fAttr == INVALID_FILE_ATTRIBUTES)
+        rc = birdSetErrno(GetLastError());
+    else if (fMustBeDir & !(fAttr & FILE_ATTRIBUTE_DIRECTORY))
+    {
+        errno = ENOTDIR;
+        rc = -1;
+    }
+    else if (fAttr & FILE_ATTRIBUTE_REPARSE_POINT)
+    {
+        errno = ENOSYS; /** @todo resolve symbolic link / rewrite to NtSetInformationFile. */
+        rc = -1;
+    }
+    else
+    {
+        /*
+         * Modify the attributes and try set them.
+         */
+        if (mode & _S_IWRITE)
+        {
+            fAttr &= ~FILE_ATTRIBUTE_READONLY;
+            if (fAttr == 0)
+                fAttr = FILE_ATTRIBUTE_NORMAL;
+        }
+        else
+        {
+            fAttr &= ~FILE_ATTRIBUTE_NORMAL;
+            fAttr |= FILE_ATTRIBUTE_READONLY;
+        }
+        if (!SetFileAttributes(pszPath, fAttr))
+            rc = birdSetErrno(GetLastError());
+    }
+
+    if (pszPathFree)
+    {
+        int saved_errno = errno;
+        free(pszPathFree);
+        errno = saved_errno;
+    }
+    return rc;
+}
+
+
+typedef BOOL (WINAPI *PFNCREATEHARDLINKA)(LPCSTR, LPCSTR, LPSECURITY_ATTRIBUTES);
+int link(const char *pszDst, const char *pszLink)
+{
+    static PFNCREATEHARDLINKA   s_pfnCreateHardLinkA = NULL;
+    static int                  s_fTried = FALSE;
+
+    /* The API was introduced in Windows 2000, so resolve it dynamically. */
+    if (!s_pfnCreateHardLinkA)
+    {
+        if (!s_fTried)
+        {
+            HMODULE hmod = LoadLibrary("KERNEL32.DLL");
+            if (hmod)
+                *(FARPROC *)&s_pfnCreateHardLinkA = GetProcAddress(hmod, "CreateHardLinkA");
+            s_fTried = TRUE;
+        }
+        if (!s_pfnCreateHardLinkA)
+        {
+            errno = ENOSYS;
+            return -1;
+        }
+    }
+
+    if (s_pfnCreateHardLinkA(pszLink, pszDst, NULL))
+        return 0;
+    return birdSetErrno(GetLastError());
+}
+
+
+int mkdir_msc(const char *path, mode_t mode)
+{
+    int rc = (mkdir)(path);
+    if (rc)
+    {
+        size_t len = strlen(path);
+        if (len > 0 && (path[len - 1] == '/' || path[len - 1] == '\\'))
+        {
+            char *str = strdup(path);
+            while (len > 0 && (str[len - 1] == '/' || str[len - 1] == '\\'))
+                str[--len] = '\0';
+            rc = (mkdir)(str);
+            free(str);
+        }
+    }
+    return rc;
+}
+
+int rmdir_msc(const char *path)
+{
+    int rc = (rmdir)(path);
+    if (rc)
+    {
+        size_t len = strlen(path);
+        if (len > 0 && (path[len - 1] == '/' || path[len - 1] == '\\'))
+        {
+            char *str = strdup(path);
+            while (len > 0 && (str[len - 1] == '/' || str[len - 1] == '\\'))
+                str[--len] = '\0';
+            rc = (rmdir)(str);
+            free(str);
+        }
+    }
+    return rc;
+}
+
+
+static int doname(char *pszX, char *pszEnd)
+{
+    static char s_szChars[] = "Xabcdefghijklmnopqrstuwvxyz1234567890";
+    int rc = 0;
+    do
+    {
+        char ch;
+
+        pszEnd++;
+        ch = *(strchr(s_szChars, *pszEnd) + 1);
+        if (ch)
+        {
+            *pszEnd = ch;
+            return 0;
+        }
+        *pszEnd = 'a';
+    } while (pszEnd != pszX);
+    return 1;
+}
+
+
+int mkstemp(char *temp)
+{
+    char *pszX = strchr(temp, 'X');
+    char *pszEnd = strchr(pszX, '\0');
+    int cTries = 1000;
+    while (--cTries > 0)
+    {
+        int fd;
+        if (doname(pszX, pszEnd))
+            return -1;
+        fd = open(temp, _O_EXCL | _O_CREAT | _O_BINARY | _O_RDWR | KMK_OPEN_NO_INHERIT, 0777);
+        if (fd >= 0)
+            return fd;
+    }
+    return -1;
+}
+
+
+/** Unix to DOS. */
+static char *fix_slashes(char *psz)
+{
+    char *pszRet = psz;
+    for (; *psz; psz++)
+        if (*psz == '/')
+            *psz = '\\';
+    return pszRet;
+}
+
+
+/** Calcs the SYMBOLIC_LINK_FLAG_DIRECTORY flag for CreatesymbolcLink.  */
+static DWORD is_directory(const char *pszPath, const char *pszRelativeTo)
+{
+    size_t cchPath = strlen(pszPath);
+    struct stat st;
+    if (cchPath > 0 && pszPath[cchPath - 1] == '\\' || pszPath[cchPath - 1] == '/')
+        return 1; /* SYMBOLIC_LINK_FLAG_DIRECTORY */
+
+    if (stat(pszPath, &st))
+    {
+        size_t cchRelativeTo = strlen(pszRelativeTo);
+        char *psz = malloc(cchPath + cchRelativeTo + 4);
+        memcpy(psz, pszRelativeTo, cchRelativeTo);
+        memcpy(psz + cchRelativeTo, "\\", 1);
+        memcpy(psz + cchRelativeTo + 1, pszPath, cchPath + 1);
+        if (stat(pszPath, &st))
+            st.st_mode = _S_IFREG;
+        free(psz);
+    }
+
+    return (st.st_mode & _S_IFMT) == _S_IFDIR ? 1 : 0;
+}
+
+
+int symlink(const char *pszDst, const char *pszLink)
+{
+    static BOOLEAN (WINAPI *s_pfnCreateSymbolicLinkA)(LPCSTR, LPCSTR, DWORD) = 0;
+    static BOOL s_fTried = FALSE;
+
+    if (!s_fTried)
+    {
+        HMODULE hmod = LoadLibrary("KERNEL32.DLL");
+        if (hmod)
+            *(FARPROC *)&s_pfnCreateSymbolicLinkA = GetProcAddress(hmod, "CreateSymbolicLinkA");
+        s_fTried = TRUE;
+    }
+
+    if (s_pfnCreateSymbolicLinkA)
+    {
+        char *pszDstCopy = fix_slashes(strdup(pszDst));
+        char *pszLinkCopy = fix_slashes(strdup(pszLink));
+        BOOLEAN fRc = s_pfnCreateSymbolicLinkA(pszLinkCopy, pszDstCopy,
+                                               is_directory(pszDstCopy, pszLinkCopy));
+        DWORD err = GetLastError();
+        free(pszDstCopy);
+        free(pszLinkCopy);
+        if (fRc)
+            return 0;
+        switch (err)
+        {
+            case ERROR_NOT_SUPPORTED:       errno = ENOSYS; break;
+            case ERROR_ALREADY_EXISTS:
+            case ERROR_FILE_EXISTS:         errno = EEXIST; break;
+            case ERROR_DIRECTORY:           errno = ENOTDIR; break;
+            case ERROR_ACCESS_DENIED:
+            case ERROR_PRIVILEGE_NOT_HELD:  errno = EPERM; break;
+            default:                        errno = EINVAL; break;
+        }
+        return -1;
+    }
+
+    fprintf(stderr, "warning: symlink() is available on this version of Windows!\n");
+    errno = ENOSYS;
+    return -1;
+}
+
+
+#if _MSC_VER < 1400
+int snprintf(char *buf, size_t size, const char *fmt, ...)
+{
+    int cch;
+    va_list args;
+    va_start(args, fmt);
+    cch = vsprintf(buf, fmt, args);
+    va_end(args);
+    return cch;
+}
+#endif
+
+
+/* We override the libc write function (in our modules only, unfortunately) so
+   we can kludge our way around a ENOSPC problem observed on build servers
+   capturing STDOUT and STDERR via pipes.  Apparently this may happen when the
+   pipe buffer is full, even with the mscfake_init hack in place.
+
+   XXX: Probably need to hook into fwrite as well. */
+ssize_t msc_write(int fd, const void *pvSrc, size_t cbSrc)
+{
+#define MSC_WRITE_MAX_CHUNK (UINT_MAX / 32)
+    ssize_t cbRet;
+    if (cbSrc <= MSC_WRITE_MAX_CHUNK)
+    {
+        /* Console output optimization: */
+        if (cbSrc > 0 && is_console(fd))
+            return maybe_con_write(fd, pvSrc, cbSrc);
+
+#ifndef MSC_WRITE_TEST
+        cbRet = _write(fd, pvSrc, (unsigned int)cbSrc);
+#else
+        cbRet = -1; errno = ENOSPC;
+#endif
+        if (cbRet < 0)
+        {
+            /* ENOSPC on pipe kludge. */
+            unsigned int cbLimit;
+            int cSinceLastSuccess;
+
+            if (cbSrc == 0)
+                return 0;
+            if (errno != ENOSPC)
+                return -1;
+#ifndef MSC_WRITE_TEST
+            if (!isPipeFd(fd))
+            {
+                errno = ENOSPC;
+                return -1;
+            }
+#endif
+
+            /* Likely a full pipe buffer, try write smaller amounts and do some
+               sleeping inbetween each unsuccessful one. */
+            cbLimit = (unsigned)(cbSrc / 4);
+            if (cbLimit < 4)
+                cbLimit = 4;
+            else if (cbLimit > 512)
+                cbLimit = 512;
+            cSinceLastSuccess = 0;
+            cbRet = 0;
+#ifdef MSC_WRITE_TEST
+            cbLimit = 4;
+#endif
+
+            while ((ssize_t)cbSrc > 0)
+            {
+                unsigned int cbAttempt = cbSrc > cbLimit ? cbLimit : (unsigned int)cbSrc;
+                ssize_t cbActual = _write(fd, pvSrc, cbAttempt);
+                if (cbActual > 0)
+                {
+                    /* For some reason, it seems like we cannot trust _write to return
+                       a number that's less or equal to the number of bytes we passed
+                       in to the call.  (Also reason for signed check in loop.) */
+                    if (cbActual > cbAttempt)
+                        cbActual = cbAttempt;
+
+                    pvSrc  = (char *)pvSrc + cbActual;
+                    cbSrc -= cbActual;
+                    cbRet += cbActual;
+#ifndef MSC_WRITE_TEST
+                    if (cbLimit < 32)
+                        cbLimit = 32;
+#endif
+                    cSinceLastSuccess = 0;
+                }
+                else if (errno != ENOSPC)
+                    return -1;
+                else
+                {
+                    /* Delay for about 30 seconds, then just give up. */
+                    cSinceLastSuccess++;
+                    if (cSinceLastSuccess > 1860)
+                        return -1;
+                    if (cSinceLastSuccess <= 2)
+                        Sleep(0);
+                    else if (cSinceLastSuccess <= 66)
+                    {
+                        if (cbLimit >= 8)
+                            cbLimit /= 2; /* Just in case the pipe buffer is very very small. */
+                        Sleep(1);
+                    }
+                    else
+                        Sleep(16);
+                }
+            }
+        }
+    }
+    else
+    {
+        /*
+         * Type limit exceeded. Split the job up.
+         */
+        cbRet = 0;
+        while (cbSrc > 0)
+        {
+            size_t  cbToWrite = cbSrc > MSC_WRITE_MAX_CHUNK ? MSC_WRITE_MAX_CHUNK : cbSrc;
+            ssize_t cbWritten = msc_write(fd, pvSrc, cbToWrite);
+            if (cbWritten > 0)
+            {
+                pvSrc  = (char *)pvSrc + (size_t)cbWritten;
+                cbSrc -= (size_t)cbWritten;
+                cbRet += (size_t)cbWritten;
+            }
+            else if (cbWritten == 0 || cbRet > 0)
+                break;
+            else
+                return -1;
+        }
+    }
+    return cbRet;
+}
+
+ssize_t writev(int fd, const struct iovec *vector, int count)
+{
+    ssize_t size = 0;
+    if (count > 0)
+    {
+        int i;
+
+        /* To get consistent console output, we must try combine the segments
+           when outputing to the console. */
+        if (count > 1 && is_console(fd))
+        {
+            char   *pbTmp;
+            ssize_t cbTotal;
+            if (count == 1)
+                return maybe_con_write(fd, vector[0].iov_base, (int)vector[0].iov_len);
+
+            cbTotal = 0;
+            for (i = 0; i < count; i++)
+                cbTotal += vector[i].iov_len;
+            pbTmp = malloc(cbTotal);
+            if (pbTmp)
+            {
+                char *pbCur = pbTmp;
+                for (i = 0; i < count; i++)
+                {
+                    memcpy(pbCur, vector[i].iov_base, vector[i].iov_len);
+                    pbCur += vector[i].iov_len;
+                }
+                size = maybe_con_write(fd, pbTmp, cbTotal);
+                free(pbTmp);
+                return size;
+            }
+
+            /* fall back on segment by segment output. */
+        }
+
+        for (i = 0; i < count; i++)
+        {
+            int cb = msc_write(fd, vector[i].iov_base, (int)vector[i].iov_len);
+            if (cb < 0)
+                return cb;
+            size += cb;
+        }
+    }
+    return size;
+}
+
+
+intmax_t strtoimax(const char *nptr, char **endptr, int base)
+{
+    if (*nptr != '-')
+        return _strtoui64(nptr, endptr, base);
+    return -(intmax_t)_strtoui64(nptr + 1, endptr, base);
+}
+
+
+uintmax_t strtoumax(const char *nptr, char **endptr, int base)
+{
+    return _strtoui64(nptr, endptr, base);
+}
+
+
+int asprintf(char **strp, const char *fmt, ...)
+{
+    int rc;
+    va_list va;
+    va_start(va, fmt);
+    rc = vasprintf(strp, fmt, va);
+    va_end(va);
+    return rc;
+}
+
+
+int vasprintf(char **strp, const char *fmt, va_list va)
+{
+    int rc;
+    char *psz;
+    size_t cb = 1024;
+
+    *strp = NULL;
+    for (;;)
+    {
+        va_list va2;
+
+        psz = malloc(cb);
+        if (!psz)
+            return -1;
+
+#ifdef va_copy
+        va_copy(va2, va);
+        rc = vsnprintf(psz, cb, fmt, va2);
+        va_end(vaCopy);
+#else
+        va2 = va;
+        rc = vsnprintf(psz, cb, fmt, va2);
+#endif
+        if (rc < 0 || (size_t)rc < cb)
+            break;
+        cb *= 2;
+        free(psz);
+    }
+
+    *strp = psz;
+    return rc;
+}
+
+
+int utimes(const char *pszPath, const struct msc_timeval *paTimes)
+{
+    if (paTimes)
+    {
+        BirdTimeVal_T aTimes[2];
+        aTimes[0].tv_sec  = paTimes[0].tv_sec;
+        aTimes[0].tv_usec = paTimes[0].tv_usec;
+        aTimes[1].tv_sec  = paTimes[1].tv_sec;
+        aTimes[1].tv_usec = paTimes[1].tv_usec;
+        return birdUtimes(pszPath, aTimes);
+    }
+    return birdUtimes(pszPath, NULL);
+}
+
+
+int lutimes(const char *pszPath, const struct msc_timeval *paTimes)
+{
+    if (paTimes)
+    {
+        BirdTimeVal_T aTimes[2];
+        aTimes[0].tv_sec  = paTimes[0].tv_sec;
+        aTimes[0].tv_usec = paTimes[0].tv_usec;
+        aTimes[1].tv_sec  = paTimes[1].tv_sec;
+        aTimes[1].tv_usec = paTimes[1].tv_usec;
+        return birdUtimes(pszPath, aTimes);
+    }
+    return birdUtimes(pszPath, NULL);
+}
+
+
+int gettimeofday(struct msc_timeval *pNow, void *pvIgnored)
+{
+    struct __timeb64 Now;
+    int rc = _ftime64_s(&Now);
+    if (rc == 0)
+    {
+        pNow->tv_sec  = Now.time;
+        pNow->tv_usec = Now.millitm * 1000;
+        return 0;
+    }
+    errno = rc;
+    return -1;
+}
+
+
+struct tm *localtime_r(const __time64_t *pNow, struct tm *pResult)
+{
+    int rc = _localtime64_s(pResult, pNow);
+    if (rc == 0)
+        return pResult;
+    errno = rc;
+    return NULL;
+}
+
+
+__time64_t timegm(struct tm *pNow)
+{
+    return _mkgmtime64(pNow);
+}
+
+
+/**
+ * Checks if the given file descriptor is a pipe or not.
+ *
+ * @returns TRUE if pipe, FALSE if not.
+ * @param   fd                  The libc file descriptor number.
+ */
+static BOOL isPipeFd(int fd)
+{
+    /* Is pipe? */
+    HANDLE hFile = (HANDLE)_get_osfhandle(fd);
+    if (hFile != INVALID_HANDLE_VALUE)
+    {
+        DWORD fType = GetFileType(hFile);
+        fType &= ~FILE_TYPE_REMOTE;
+        if (fType == FILE_TYPE_PIPE)
+            return TRUE;
+    }
+    return FALSE;
+}
+
+
+/**
+ * This is a kludge to make pipe handles blocking.
+ *
+ * @returns TRUE if it's now blocking, FALSE if not a pipe or we failed to fix
+ *          the blocking mode.
+ * @param   fd                  The libc file descriptor number.
+ */
+static BOOL makePipeBlocking(int fd)
+{
+    if (isPipeFd(fd))
+    {
+        /* Try fix it. */
+        HANDLE hFile = (HANDLE)_get_osfhandle(fd);
+        DWORD fState = 0;
+        if (GetNamedPipeHandleState(hFile, &fState, NULL, NULL, NULL, NULL,  0))
+        {
+            fState &= ~PIPE_NOWAIT;
+            fState |= PIPE_WAIT;
+            if (SetNamedPipeHandleState(hFile, &fState, NULL, NULL))
+                return TRUE;
+        }
+    }
+    return FALSE;
+}
+
+
+/**
+ * Initializes the msc fake stuff.
+ * @returns 0 on success (non-zero would indicate failure, see rterr.h).
+ */
+int mscfake_init(void)
+{
+    /*
+     * Kludge against _write returning ENOSPC on non-blocking pipes.
+     */
+    makePipeBlocking(STDOUT_FILENO);
+    makePipeBlocking(STDERR_FILENO);
+
+    return 0;
+}
+
+/*
+ * Do this before main is called.
+ */
+#pragma section(".CRT$XIA", read)
+#pragma section(".CRT$XIU", read)
+#pragma section(".CRT$XIZ", read)
+typedef int (__cdecl *PFNCRTINIT)(void);
+static __declspec(allocate(".CRT$XIU")) PFNCRTINIT g_MscFakeInitVectorEntry = mscfake_init;
+
diff --git a/src/kmk/kmkbuiltin/mscfakes.h b/src/kmk/kmkbuiltin/mscfakes.h
new file mode 100644
index 0000000..95f76b2
--- /dev/null
+++ b/src/kmk/kmkbuiltin/mscfakes.h
@@ -0,0 +1,183 @@
+/* $Id: mscfakes.h 3213 2018-03-30 21:03:28Z bird $ */
+/** @file
+ * Unix fakes for MSC.
+ */
+
+/*
+ * Copyright (c) 2005-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef ___mscfakes_h
+#define ___mscfakes_h
+#ifdef _MSC_VER
+
+#define timeval windows_timeval
+
+/* Include the config file (kmk's) so we don't need to duplicate stuff from it here. */
+#include "config.h"
+
+#include <io.h>
+#include <direct.h>
+#include <time.h>
+#include <stdarg.h>
+#include <malloc.h>
+#ifndef FAKES_NO_GETOPT_H
+# include "getopt.h"
+#endif
+#ifndef MSCFAKES_NO_WINDOWS_H
+# include <Windows.h>
+#endif
+
+#include <sys/stat.h>
+#include <io.h>
+#include <direct.h>
+#include "nt/ntstat.h"
+#include "nt/ntunlink.h"
+#ifdef MSC_DO_64_BIT_IO
+# if _MSC_VER >= 1400 /* We want 64-bit file lengths here when possible. */
+#  define off_t __int64
+#  define lseek _lseeki64
+# endif
+#endif
+
+#undef timeval
+
+#undef  PATH_MAX
+#define PATH_MAX   _MAX_PATH
+#undef  MAXPATHLEN
+#define MAXPATHLEN _MAX_PATH
+
+#define EX_OK 0
+#define EX_OSERR 1
+#define EX_NOUSER 1
+#define EX_USAGE 1
+
+#define STDIN_FILENO 0
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+
+#define F_OK 0
+#define X_OK 1
+#define W_OK 2
+#define R_OK 4
+
+#define EFTYPE EINVAL
+
+#define _PATH_DEVNULL "/dev/null"
+
+#ifndef MAX
+# define MAX(a,b) ((a) >= (b) ? (a) : (b))
+#endif
+
+typedef int mode_t;
+typedef unsigned short nlink_t;
+#if 0 /* found in config.h */
+typedef unsigned short uid_t;
+typedef unsigned short gid_t;
+#endif
+typedef intptr_t ssize_t;
+typedef unsigned long u_long;
+typedef unsigned int u_int;
+typedef unsigned short u_short;
+
+#if _MSC_VER >= 1600
+# include <stdint.h>
+#else
+typedef unsigned char  uint8_t;
+typedef unsigned short uint16_t;
+typedef unsigned int   uint32_t;
+typedef signed char    int8_t;
+typedef signed short   int16_t;
+typedef signed int     int32_t;
+#endif
+
+struct msc_timeval
+{
+    __time64_t tv_sec;
+    long tv_usec;
+};
+#define timeval msc_timeval
+
+struct iovec
+{
+    char *iov_base;
+    size_t iov_len;
+};
+
+typedef __int64 intmax_t;
+#if 0 /* found in config.h */
+typedef unsigned __int64 uintmax_t;
+#endif
+
+#define chown(path, uid, gid) 0         /** @todo implement fchmod! */
+char *dirname(char *path);
+#define fsync(fd)  0
+#define fchown(fd,uid,gid) 0
+#define fchmod(fd, mode) 0              /** @todo implement fchmod! */
+#define geteuid()  0
+#define getegid()  0
+int lchmod(const char *path, mode_t mode);
+int msc_chmod(const char *path, mode_t mode);
+#define chmod msc_chmod
+#define lchown(path, uid, gid) chown(path, uid, gid)
+int link(const char *pszDst, const char *pszLink);
+int mkdir_msc(const char *path, mode_t mode);
+#define mkdir(path, mode) mkdir_msc(path, mode)
+#define mkfifo(path, mode) -1
+#define mknod(path, mode, devno) -1
+int mkstemp(char *temp);
+#define readlink(link, buf, size) -1
+#define reallocf(old, size) realloc(old, size)
+int rmdir_msc(const char *path);
+#define rmdir(path) rmdir_msc(path)
+intmax_t strtoimax(const char *nptr, char **endptr, int base);
+uintmax_t strtoumax(const char *nptr, char **endptr, int base);
+#define strtoll(a,b,c) strtoimax(a,b,c)
+#define strtoull(a,b,c) strtoumax(a,b,c)
+int asprintf(char **strp, const char *fmt, ...);
+int vasprintf(char **strp, const char *fmt, va_list ap);
+#if _MSC_VER < 1400
+int snprintf(char *buf, size_t size, const char *fmt, ...);
+#else
+#define snprintf _snprintf
+#endif
+int symlink(const char *pszDst, const char *pszLink);
+int utimes(const char *pszPath, const struct msc_timeval *paTimes);
+int lutimes(const char *pszPath, const struct msc_timeval *paTimes);
+ssize_t writev(int fd, const struct iovec *vector, int count);
+
+int gettimeofday(struct msc_timeval *pNow, void *pvIgnored);
+struct tm *localtime_r(const __time64_t *pNow, struct tm *pResult);
+__time64_t timegm(struct tm *pNow);
+#undef mktime
+#define mktime _mktime64
+
+/* bird write ENOSPC hacks. */
+#undef write
+#define write msc_write
+ssize_t msc_write(int fd, const void *pvSrc, size_t cbSrc);
+
+/*
+ * MSC fake internals / helpers.
+ */
+int birdSetErrno(unsigned dwErr);
+
+#endif /* _MSC_VER */
+#endif
+
diff --git a/src/kmk/kmkbuiltin/mv.c b/src/kmk/kmkbuiltin/mv.c
new file mode 100644
index 0000000..7db962c
--- /dev/null
+++ b/src/kmk/kmkbuiltin/mv.c
@@ -0,0 +1,529 @@
+/*-
+ * Copyright (c) 1989, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Ken Smith of The State University of New York at Buffalo.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char const copyright[] =
+"@(#) Copyright (c) 1989, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)mv.c	8.2 (Berkeley) 4/2/94";
+#endif /* not lint */
+#endif
+#if 0
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/bin/mv/mv.c,v 1.46 2005/09/05 04:36:08 csjp Exp $");
+#endif
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define FAKES_NO_GETOPT_H /* bird */
+#include "config.h"
+#include <sys/types.h>
+#ifndef _MSC_VER
+# ifdef CROSS_DEVICE_MOVE
+#  include <sys/acl.h>
+# endif
+# include <sys/param.h>
+# include <sys/time.h>
+# include <sys/wait.h>
+# if !defined(__HAIKU__) && !defined(__gnu_hurd__)
+#  include <sys/mount.h>
+# endif
+#endif
+#include <sys/stat.h>
+
+#include "err.h"
+#include <errno.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <limits.h>
+#include <paths.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifndef __HAIKU__
+# include <sysexits.h>
+#endif
+#include <unistd.h>
+#include "getopt_r.h"
+#ifdef __sun__
+# include "solfakes.h"
+#endif
+#ifdef __HAIKU__
+# include "haikufakes.h"
+#endif
+#ifdef _MSC_VER
+# include "mscfakes.h"
+#endif
+#include "kmkbuiltin.h"
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct MVINSTANCE
+{
+    PKMKBUILTINCTX pCtx;
+    int fflg, iflg, nflg, vflg;
+} MVINSTANCE;
+typedef MVINSTANCE *PMVINSTANCE;
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static struct option long_options[] =
+{
+    { "help",   					no_argument, 0, 261 },
+    { "version",   					no_argument, 0, 262 },
+    { 0, 0,	0, 0 },
+};
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+extern void 	bsd_strmode(mode_t mode, char *p); /* strmode.c */
+
+static int	do_move(PMVINSTANCE, char *, char *);
+#if 0 // def CROSS_DEVICE_MOVE
+static int	fastcopy(char *, char *, struct stat *);
+static int	copy(char *, char *);
+#endif
+static int	usage(PKMKBUILTINCTX, int);
+
+
+int
+kmk_builtin_mv(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+	MVINSTANCE This;
+	struct getopt_state_r gos;
+	size_t baselen, len;
+	int rval;
+	char *p, *endp;
+	struct stat sb;
+	int ch;
+	char path[PATH_MAX];
+
+	/* Initialize instance. */
+	This.pCtx = pCtx;
+	This.fflg = 0;
+	This.iflg = 0;
+	This.nflg = 0;
+	This.vflg = 0;
+
+	getopt_initialize_r(&gos, argc, argv, "finv", long_options, envp, pCtx);
+	while ((ch = getopt_long_r(&gos, NULL)) != -1)
+		switch (ch) {
+		case 'i':
+			This.iflg = 1;
+			This.fflg = This.nflg = 0;
+			break;
+		case 'f':
+			This.fflg = 1;
+			This.iflg = This.nflg = 0;
+			break;
+		case 'n':
+			This.nflg = 1;
+			This.fflg = This.iflg = 0;
+			break;
+		case 'v':
+			This.vflg = 1;
+			break;
+		case 261:
+			usage(pCtx, 0);
+			return 0;
+		case 262:
+			return kbuild_version(argv[0]);
+		default:
+			return usage(pCtx, 1);
+		}
+	argc -= gos.optind;
+	argv += gos.optind;
+
+	if (argc < 2)
+		return usage(pCtx, 1);
+
+	/*
+	 * If the stat on the target fails or the target isn't a directory,
+	 * try the move.  More than 2 arguments is an error in this case.
+	 */
+	if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
+		if (argc > 2)
+			return usage(pCtx, 1);
+		return do_move(&This, argv[0], argv[1]);
+	}
+
+	/* It's a directory, move each file into it. */
+	baselen = strlen(argv[argc - 1]);
+	if (baselen > sizeof(path) - 1)
+		return errx(pCtx, 1, "%s: destination pathname too long", *argv);
+	memcpy(path, argv[argc - 1], baselen);
+	endp = &path[baselen];
+	*endp = '\0';
+#if defined(_MSC_VER) || defined(__EMX__)
+	if (!baselen || (*(endp - 1) != '/' && *(endp - 1) != '\\' && *(endp - 1) != ':')) {
+#else
+	if (!baselen || *(endp - 1) != '/') {
+#endif
+		*endp++ = '/';
+		++baselen;
+	}
+	for (rval = 0; --argc; ++argv) {
+		/*
+		 * Find the last component of the source pathname.  It
+		 * may have trailing slashes.
+		 */
+		p = *argv + strlen(*argv);
+#if defined(_MSC_VER) || defined(__EMX__)
+		while (p != *argv && (p[-1] == '/' || p[-1] == '\\'))
+			--p;
+		while (p != *argv && p[-1] != '/' && p[-1] != '/' && p[-1] != ':')
+			--p;
+#else
+		while (p != *argv && p[-1] == '/')
+			--p;
+		while (p != *argv && p[-1] != '/')
+			--p;
+#endif
+
+		if ((baselen + (len = strlen(p))) >= PATH_MAX) {
+			warnx(pCtx, "%s: destination pathname too long", *argv);
+			rval = 1;
+		} else {
+			memmove(endp, p, (size_t)len + 1);
+			if (do_move(&This, *argv, path))
+				rval = 1;
+		}
+	}
+	return rval;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_mv", NULL };
+    return kmk_builtin_mv(argc, argv, envp, &Ctx);
+}
+#endif
+
+static int
+do_move(PMVINSTANCE pThis, char *from, char *to)
+{
+	struct stat sb;
+	int ask, ch, first;
+	char modep[15];
+
+	/*
+	 * Check access.  If interactive and file exists, ask user if it
+	 * should be replaced.  Otherwise if file exists but isn't writable
+	 * make sure the user wants to clobber it.
+	 */
+	if (!pThis->fflg && !access(to, F_OK)) {
+
+		/* prompt only if source exist */
+		if (lstat(from, &sb) == -1) {
+			warn(pThis->pCtx, "%s", from);
+			return (1);
+		}
+
+#define YESNO "(y/n [n]) "
+		ask = 0;
+		if (pThis->nflg) {
+			if (pThis->vflg)
+				kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s not overwritten\n", to);
+			return (0);
+		} else if (pThis->iflg) {
+			(void)fprintf(stderr, "overwrite %s? %s", to, YESNO);
+			ask = 1;
+		} else if (access(to, W_OK) && !stat(to, &sb)) {
+			bsd_strmode(sb.st_mode, modep);
+#if 0 /* probably not thread safe, also BSDism. */
+			(void)fprintf(stderr, "override %s%s%s/%s for %s? %s",
+			    modep + 1, modep[9] == ' ' ? "" : " ",
+			    user_from_uid((unsigned long)sb.st_uid, 0),
+			    group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
+#else
+			(void)fprintf(stderr, "override %s%s%lu/%lu for %s? %s",
+			              modep + 1, modep[9] == ' ' ? "" : " ",
+			              (unsigned long)sb.st_uid, (unsigned long)sb.st_gid,
+			              to, YESNO);
+#endif
+			ask = 1;
+		}
+		if (ask) {
+			fflush(stderr);
+			first = ch = getchar();
+			while (ch != '\n' && ch != EOF)
+				ch = getchar();
+			if (first != 'y' && first != 'Y') {
+				kmk_builtin_ctx_printf(pThis->pCtx, 1, "not overwritten\n");
+				return (0);
+			}
+		}
+	}
+	if (!rename(from, to)) {
+		if (pThis->vflg)
+			kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s -> %s\n", from, to);
+		return (0);
+	}
+#ifdef _MSC_VER
+	if (errno == EEXIST) {
+		remove(to);
+		if (!rename(from, to)) {
+			if (pThis->vflg)
+				kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s -> %s\n", from, to);
+			return (0);
+		}
+	}
+#endif
+
+	if (errno == EXDEV) {
+#if 1 //ndef CROSS_DEVICE_MOVE
+		warnx(pThis->pCtx, "cannot move `%s' to a different device: `%s'", from, to);
+		return (1);
+#else
+		struct statfs sfs;
+		char path[PATH_MAX];
+
+		/*
+		 * If the source is a symbolic link and is on another
+		 * filesystem, it can be recreated at the destination.
+		 */
+		if (lstat(from, &sb) == -1) {
+			warn(pThis->pCtx, "%s", from);
+			return (1);
+		}
+		if (!S_ISLNK(sb.st_mode)) {
+			/* Can't mv(1) a mount point. */
+			if (realpath(from, path) == NULL) {
+				warnx(pThis->pCtx, "cannot resolve %s: %s", from, path);
+				return (1);
+			}
+			if (!statfs(path, &sfs) &&
+			    !strcmp(path, sfs.f_mntonname)) {
+				warnx(pThis->pCtx, "cannot rename a mount point");
+				return (1);
+			}
+		}
+#endif
+	} else {
+		warn(pThis->pCtx, "rename %s to %s", from, to);
+		return (1);
+	}
+
+#if 0//def CROSS_DEVICE_MOVE
+	/*
+	 * If rename fails because we're trying to cross devices, and
+	 * it's a regular file, do the copy internally; otherwise, use
+	 * cp and rm.
+	 */
+	if (lstat(from, &sb)) {
+		warn(pThis->pCtx, "%s", from);
+		return (1);
+	}
+	return (S_ISREG(sb.st_mode) ?
+	    fastcopy(pThis, from, to, &sb) : copy(pThis, from, to));
+#endif
+}
+
+#if 0 //def CROSS_DEVICE_MOVE - using static buffers and fork.
+int
+static fastcopy(char *from, char *to, struct stat *sbp)
+{
+	struct timeval tval[2];
+	static u_int blen;
+	static char *bp;
+	mode_t oldmode;
+	int nread, from_fd, to_fd;
+	acl_t acl;
+
+	if ((from_fd = open(from, O_RDONLY | KMK_OPEN_NO_INHERIT, 0)) < 0) {
+		warn("%s", from);
+		return (1);
+	}
+	if (blen < sbp->st_blksize) {
+		if (bp != NULL)
+			free(bp);
+		if ((bp = malloc((size_t)sbp->st_blksize)) == NULL) {
+			blen = 0;
+			warnx("malloc failed");
+			return (1);
+		}
+		blen = sbp->st_blksize;
+	}
+	while ((to_fd =
+	    open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY | KMK_OPEN_NO_INHERIT, 0)) < 0) {
+		if (errno == EEXIST && unlink(to) == 0)
+			continue;
+		warn("%s", to);
+		(void)close(from_fd);
+		return (1);
+	}
+	while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
+		if (write(to_fd, bp, (size_t)nread) != nread) {
+			warn("%s", to);
+			goto err;
+		}
+	if (nread < 0) {
+		warn("%s", from);
+err:		if (unlink(to))
+			warn("%s: remove", to);
+		(void)close(from_fd);
+		(void)close(to_fd);
+		return (1);
+	}
+
+	oldmode = sbp->st_mode & ALLPERMS;
+	if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
+		warn("%s: set owner/group (was: %lu/%lu)", to,
+		    (u_long)sbp->st_uid, (u_long)sbp->st_gid);
+		if (oldmode & (S_ISUID | S_ISGID)) {
+			warnx(
+"%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
+			    to, oldmode);
+			sbp->st_mode &= ~(S_ISUID | S_ISGID);
+		}
+	}
+	/*
+	 * POSIX 1003.2c states that if _POSIX_ACL_EXTENDED is in effect
+	 * for dest_file, then it's ACLs shall reflect the ACLs of the
+	 * source_file.
+	 */
+	if (fpathconf(to_fd, _PC_ACL_EXTENDED) == 1 &&
+	    fpathconf(from_fd, _PC_ACL_EXTENDED) == 1) {
+		acl = acl_get_fd(from_fd);
+		if (acl == NULL)
+			warn("failed to get acl entries while setting %s",
+			    from);
+		else if (acl_set_fd(to_fd, acl) < 0)
+			warn("failed to set acl entries for %s", to);
+	}
+	(void)close(from_fd);
+	if (fchmod(to_fd, sbp->st_mode))
+		warn("%s: set mode (was: 0%03o)", to, oldmode);
+	/*
+	 * XXX
+	 * NFS doesn't support chflags; ignore errors unless there's reason
+	 * to believe we're losing bits.  (Note, this still won't be right
+	 * if the server supports flags and we were trying to *remove* flags
+	 * on a file that we copied, i.e., that we didn't create.)
+	 */
+	errno = 0;
+	if (fchflags(to_fd, (u_long)sbp->st_flags))
+		if (errno != EOPNOTSUPP || sbp->st_flags != 0)
+			warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
+
+	tval[0].tv_sec = sbp->st_atime;
+	tval[1].tv_sec = sbp->st_mtime;
+	tval[0].tv_usec = tval[1].tv_usec = 0;
+	if (utimes(to, tval))
+		warn("%s: set times", to);
+
+	if (close(to_fd)) {
+		warn("%s", to);
+		return (1);
+	}
+
+	if (unlink(from)) {
+		warn("%s: remove", from);
+		return (1);
+	}
+	if (vflg)
+		kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s -> %s\n", from, to);
+	return (0);
+}
+
+int
+copy(char *from, char *to)
+{
+	int pid, status;
+
+	if ((pid = fork()) == 0) {
+		execl(_PATH_CP, "mv", vflg ? "-PRpv" : "-PRp", "--", from, to,
+		    (char *)NULL);
+		warn("%s", _PATH_CP);
+		_exit(1);
+	}
+	if (waitpid(pid, &status, 0) == -1) {
+		warn("%s: waitpid", _PATH_CP);
+		return (1);
+	}
+	if (!WIFEXITED(status)) {
+		warnx("%s: did not terminate normally", _PATH_CP);
+		return (1);
+	}
+	if (WEXITSTATUS(status)) {
+		warnx("%s: terminated with %d (non-zero) status",
+		    _PATH_CP, WEXITSTATUS(status));
+		return (1);
+	}
+	if (!(pid = vfork())) {
+		execl(_PATH_RM, "mv", "-rf", "--", from, (char *)NULL);
+		warn("%s", _PATH_RM);
+		_exit(1);
+	}
+	if (waitpid(pid, &status, 0) == -1) {
+		warn("%s: waitpid", _PATH_RM);
+		return (1);
+	}
+	if (!WIFEXITED(status)) {
+		warnx("%s: did not terminate normally", _PATH_RM);
+		return (1);
+	}
+	if (WEXITSTATUS(status)) {
+		warnx("%s: terminated with %d (non-zero) status",
+		    _PATH_RM, WEXITSTATUS(status));
+		return (1);
+	}
+	return (0);
+}
+#endif /* CROSS_DEVICE_MOVE */
+
+
+static int
+usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+	kmk_builtin_ctx_printf(pCtx, fIsErr,
+	                       "usage: %s [-f | -i | -n] [-v] source target\n"
+	                       "   or: %s [-f | -i | -n] [-v] source ... directory\n"
+	                       "   or: %s --help\n"
+	                       "   or: %s --version\n",
+	                       pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName);
+	return EX_USAGE;
+}
diff --git a/src/kmk/kmkbuiltin/openbsd.c b/src/kmk/kmkbuiltin/openbsd.c
new file mode 100644
index 0000000..b6b59db
--- /dev/null
+++ b/src/kmk/kmkbuiltin/openbsd.c
@@ -0,0 +1,54 @@
+/* $Id: openbsd.c 2421 2010-10-17 21:27:53Z bird $ */
+/** @file
+ * Missing BSD functions in OpenBSD.
+ */
+
+/*
+ * Copyright (c) 2006-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "config.h"
+#include <sys/stat.h>
+#include <unistd.h>
+
+
+int lchmod(const char *path, mode_t mode)
+{
+    struct stat st;
+    if (lstat(path, &st))
+        return -1;
+    if (S_ISLNK(st.st_mode))
+        return 0; /* pretend success */
+    return chmod(path, mode);
+}
+
+
+int lutimes(const char *path, const struct timeval *tvs)
+{
+    struct stat st;
+    if (lstat(path, &st))
+        return -1;
+    if (S_ISLNK(st.st_mode))
+        return 0; /* pretend success */
+    return utimes(path, tvs);
+}
+
diff --git a/src/kmk/kmkbuiltin/osdep.c b/src/kmk/kmkbuiltin/osdep.c
new file mode 100644
index 0000000..e9f1a77
--- /dev/null
+++ b/src/kmk/kmkbuiltin/osdep.c
@@ -0,0 +1,48 @@
+/* $Id: osdep.c 2656 2012-09-10 20:39:16Z bird $ */
+/** @file
+ * Include all the OS dependent bits when bootstrapping.
+ */
+
+/*
+ * Copyright (c) 2005-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#include <config.h>
+
+/** @todo replace this by proper configure.in tests. */
+
+#if defined(_MSC_VER)
+# include "mscfakes.c"
+# include "fts.c"
+
+#elif defined(__sun__)
+# include "solfakes.c"
+# include "fts.c"
+
+#elif defined(__APPLE__)
+# include "darwin.c"
+
+#elif defined(__OpenBSD__)
+# include "openbsd.c"
+
+#elif defined(__HAIKU__)
+# include "haikufakes.c"
+
+#endif
+
diff --git a/src/kmk/kmkbuiltin/printf.c b/src/kmk/kmkbuiltin/printf.c
new file mode 100644
index 0000000..9dc5956
--- /dev/null
+++ b/src/kmk/kmkbuiltin/printf.c
@@ -0,0 +1,954 @@
+/*	$NetBSD: printf.c,v 1.31 2005/03/22 23:55:46 dsl Exp $	*/
+
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*#include <sys/cdefs.h>
+#ifndef lint
+#if !defined(BUILTIN) && !defined(SHELL)
+__COPYRIGHT("@(#) Copyright (c) 1989, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n");
+#endif
+#endif
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)printf.c	8.2 (Berkeley) 3/22/95";
+#else
+__RCSID("$NetBSD: printf.c,v 1.31 2005/03/22 23:55:46 dsl Exp $");
+#endif
+#endif*/ /* not lint */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define FAKES_NO_GETOPT_H /* bird */
+#if !defined(KMK_BUILTIN_STANDALONE) && !defined(BUILTIN) && !defined(SHELL)
+# include "../makeint.h"
+# include "../filedef.h"
+# include "../variable.h"
+#else
+# include "config.h"
+#endif
+#include <sys/types.h>
+
+#include <ctype.h>
+#include "err.h"
+#include <errno.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <locale.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "getopt_r.h"
+#ifdef __sun__
+# include "solfakes.h"
+#endif
+#ifdef _MSC_VER
+# include "mscfakes.h"
+#endif
+
+#include "../kmkbuiltin.h"
+
+#ifdef KBUILD_OS_WINDOWS
+/* This is a trick to speed up console output on windows. */
+# include "console.h"
+# undef fwrite
+# define fwrite maybe_con_fwrite
+#endif
+
+#if 0
+#ifdef BUILTIN		/* csh builtin */
+#define kmk_builtin_printf progprintf
+#endif
+
+#ifdef SHELL		/* sh (aka ash) builtin */
+#define kmk_builtin_printf printfcmd
+#include "../../bin/sh/bltin/bltin.h"
+#endif /* SHELL */
+#endif
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+#if 0 /*def __GNUC__ - bird: gcc complains about non-ISO-standard escape. */
+#define ESCAPE '\e'
+#else
+#define ESCAPE 033
+#endif
+
+#define PF(f, func) { \
+	if (fieldwidth != -1) { \
+		if (precision != -1) \
+			(void)wrap_printf(pThis, f, fieldwidth, precision, func); \
+		else \
+			(void)wrap_printf(pThis, f, fieldwidth, func); \
+	} else if (precision != -1) \
+		(void)wrap_printf(pThis, f, precision, func); \
+	else \
+		(void)wrap_printf(pThis, f, func); \
+}
+
+#define APF(cpp, f, func) { \
+	if (fieldwidth != -1) { \
+		if (precision != -1) \
+			(void)asprintf(cpp, f, fieldwidth, precision, func); \
+		else \
+			(void)asprintf(cpp, f, fieldwidth, func); \
+	} else if (precision != -1) \
+		(void)asprintf(cpp, f, precision, func); \
+	else \
+		(void)asprintf(cpp, f, func); \
+}
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct PRINTFINSTANCE
+{
+    PKMKBUILTINCTX pCtx;
+    /* former globals */
+    size_t b_length;
+    char *b_fmt;
+    int	rval;
+    char **gargv;
+#ifndef KMK_BUILTIN_STANDALONE
+    char *g_o;
+#endif
+    /* former function level statics in common_printf(); both need freeing. */
+    char *a, *t;
+
+    /* former function level statics in conv_expand(); needs freeing. */
+    char *conv_str;
+
+    /* Buffer the output because windows doesn't do line buffering of stdout. */
+    size_t g_cchBuf;
+    char g_achBuf[256];
+} PRINTFINSTANCE;
+typedef PRINTFINSTANCE *PPRINTFINSTANCE;
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static struct option long_options[] =
+{
+    { "help",   					no_argument, 0, 261 },
+    { "version",   					no_argument, 0, 262 },
+    { 0, 0,	0, 0 },
+};
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+static int 	 common_printf(PPRINTFINSTANCE pThis, char *argv[], PKMKBUILTINCTX pCtx);
+static int 	 common_printf_inner(PPRINTFINSTANCE pThis, char *argv[]);
+static void	 conv_escape_str(PPRINTFINSTANCE, char *, void (*)(PPRINTFINSTANCE, int));
+static char	*conv_escape(PPRINTFINSTANCE, char *, char *);
+static const char *conv_expand(PPRINTFINSTANCE, const char *);
+static int	 getchr(PPRINTFINSTANCE);
+static double	 getdouble(PPRINTFINSTANCE);
+static int	 getwidth(PPRINTFINSTANCE);
+static intmax_t	 getintmax(PPRINTFINSTANCE);
+static uintmax_t getuintmax(PPRINTFINSTANCE);
+static char	*getstr(PPRINTFINSTANCE);
+static char	*mklong(PPRINTFINSTANCE, const char *, int, char[64]);
+static void      check_conversion(PPRINTFINSTANCE, const char *, const char *);
+static int	 usage(PKMKBUILTINCTX, int);
+
+static int	flush_buffer(PPRINTFINSTANCE);
+static void	b_count(PPRINTFINSTANCE, int);
+static void	b_output(PPRINTFINSTANCE, int);
+static int	wrap_putchar(PPRINTFINSTANCE, int ch);
+static int	wrap_printf(PPRINTFINSTANCE, const char *, ...);
+
+
+
+int kmk_builtin_printf(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+	PRINTFINSTANCE This;
+	struct getopt_state_r gos;
+	int ch;
+
+	getopt_initialize_r(&gos, argc, argv, "", long_options, envp, pCtx);
+	while ((ch = getopt_long_r(&gos, NULL)) != -1) {
+		switch (ch) {
+		case 261:
+			usage(pCtx, 0);
+			return 0;
+		case 262:
+			return kbuild_version(argv[0]);
+		case '?':
+		default:
+			return usage(pCtx, 1);
+		}
+	}
+	argc -= gos.optind;
+	argv += gos.optind;
+
+	if (argc < 1)
+		return usage(pCtx, 1);
+
+#ifndef KMK_BUILTIN_STANDALONE
+	This.g_o = NULL;
+#endif
+	return common_printf(&This, argv, pCtx);
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+	KMKBUILTINCTX Ctx = { "kmk_printf", NULL };
+	setlocale(LC_ALL, "");
+	return kmk_builtin_printf(argc, argv, envp, &Ctx);
+}
+#else /* KMK_BUILTIN_STANDALONE */
+/* entry point used by function.c $(printf ..,..). */
+char *kmk_builtin_func_printf(char *o, char **argv, const char *funcname)
+{
+	PRINTFINSTANCE This;
+	int rc;
+	int argc;
+
+	for (argc = 0; argv[argc] != NULL; argc++)
+		/* nothing */;
+	if (argc == 0)
+	    fatal(NILF, strlen(funcname) + INTSTR_LENGTH, _("$(%s): no format string\n"), funcname);
+
+	This.g_o = o;
+	rc = common_printf(&This, argv, NULL);
+	o = This.g_o;
+
+	if (rc != 0)
+		fatal(NILF, strlen(funcname) + INTSTR_LENGTH, _("$(%s): failure rc=%d\n"), funcname, rc);
+	return o;
+}
+#endif /* KMK_BUILTIN_STANDALONE */
+
+static int common_printf(PPRINTFINSTANCE pThis, char *argv[], PKMKBUILTINCTX pCtx)
+{
+	int rc;
+
+	/* Init all but g_o. */
+	pThis->pCtx = pCtx;
+	pThis->b_length = 0;
+	pThis->b_fmt = NULL;
+	pThis->rval = 0;
+	pThis->gargv = NULL;
+	pThis->g_cchBuf = 0;
+	pThis->a = NULL;
+	pThis->t = NULL;
+	pThis->conv_str = NULL;
+
+	rc = common_printf_inner(pThis, argv);
+
+	/* Cleanup allocations. */
+	if (pThis->a) {
+		free(pThis->a);
+		pThis->a = NULL;
+	}
+	if (pThis->t) {
+		free(pThis->t);
+		pThis->t = NULL;
+	}
+	if (pThis->conv_str) {
+		free(pThis->conv_str);
+		pThis->conv_str = NULL;
+	}
+	return rc;
+}
+
+static int common_printf_inner(PPRINTFINSTANCE pThis, char *argv[])
+{
+	char *fmt, *start;
+	int fieldwidth, precision;
+	char nextch;
+	char *format;
+	int ch;
+	char longbuf[64];
+
+	format = *argv;
+	pThis->gargv = ++argv;
+
+#define SKIP1	"#-+ 0"
+#define SKIP2	"*0123456789"
+	do {
+		/*
+		 * Basic algorithm is to scan the format string for conversion
+		 * specifications -- once one is found, find out if the field
+		 * width or precision is a '*'; if it is, gather up value.
+		 * Note, format strings are reused as necessary to use up the
+		 * provided arguments, arguments of zero/null string are
+		 * provided to use up the format string.
+		 */
+
+		/* find next format specification */
+		for (fmt = format; (ch = *fmt++) != '\0';) {
+			if (ch == '\\') {
+				char c_ch;
+				fmt = conv_escape(pThis, fmt, &c_ch);
+				wrap_putchar(pThis, c_ch);
+				continue;
+			}
+			if (ch != '%' || (*fmt == '%' && ++fmt)) {
+				(void)wrap_putchar(pThis, ch);
+				continue;
+			}
+
+			/* Ok - we've found a format specification,
+			   Save its address for a later printf(). */
+			start = fmt - 1;
+
+			/* skip to field width */
+			fmt += strspn(fmt, SKIP1);
+			fieldwidth = *fmt == '*' ? getwidth(pThis) : -1;
+
+			/* skip to possible '.', get following precision */
+			fmt += strspn(fmt, SKIP2);
+			if (*fmt == '.')
+				++fmt;
+			precision = *fmt == '*' ? getwidth(pThis) : -1;
+
+			fmt += strspn(fmt, SKIP2);
+
+			ch = *fmt;
+			if (!ch) {
+				flush_buffer(pThis);
+				warnx(pThis->pCtx, "missing format character");
+				return (1);
+			}
+			/* null terminate format string to we can use it
+			   as an argument to printf. */
+			nextch = fmt[1];
+			fmt[1] = 0;
+			switch (ch) {
+
+			case 'B': {
+				const char *p = conv_expand(pThis, getstr(pThis));
+				*fmt = 's';
+				PF(start, p);
+				break;
+			}
+			case 'b': {
+				/* There has to be a better way to do this,
+				 * but the string we generate might have
+				 * embedded nulls. */
+				char *cp = getstr(pThis);
+				/* Free on entry in case shell longjumped out */
+				if (pThis->a != NULL) {
+					free(pThis->a);
+					pThis->a = NULL;
+				}
+				if (pThis->t != NULL) {
+					free(pThis->t);
+					pThis->t = NULL;
+				}
+				/* Count number of bytes we want to output */
+				pThis->b_length = 0;
+				conv_escape_str(pThis, cp, b_count);
+				pThis->t = malloc(pThis->b_length + 1);
+				if (pThis->t == NULL)
+					break;
+				memset(pThis->t, 'x', pThis->b_length);
+				pThis->t[pThis->b_length] = 0;
+				/* Get printf to calculate the lengths */
+				*fmt = 's';
+				APF(&pThis->a, start, pThis->t);
+				pThis->b_fmt = pThis->a;
+				/* Output leading spaces and data bytes */
+				conv_escape_str(pThis, cp, b_output);
+				/* Add any trailing spaces */
+				wrap_printf(pThis, "%s", pThis->b_fmt);
+				break;
+			}
+			case 'c': {
+				char p = getchr(pThis);
+				PF(start, p);
+				break;
+			}
+			case 's': {
+				char *p = getstr(pThis);
+				PF(start, p);
+				break;
+			}
+			case 'd':
+			case 'i': {
+				intmax_t p = getintmax(pThis);
+				char *f = mklong(pThis, start, ch, longbuf);
+				PF(f, p);
+				break;
+			}
+			case 'o':
+			case 'u':
+			case 'x':
+			case 'X': {
+				uintmax_t p = getuintmax(pThis);
+				char *f = mklong(pThis, start, ch, longbuf);
+				PF(f, p);
+				break;
+			}
+			case 'e':
+			case 'E':
+			case 'f':
+			case 'g':
+			case 'G': {
+				double p = getdouble(pThis);
+				PF(start, p);
+				break;
+			}
+			default:
+				flush_buffer(pThis);
+				warnx(pThis->pCtx, "%s: invalid directive", start);
+				return 1;
+			}
+			*fmt++ = ch;
+			*fmt = nextch;
+			/* escape if a \c was encountered */
+			if (pThis->rval & 0x100) {
+				flush_buffer(pThis);
+				return pThis->rval & ~0x100;
+			}
+		}
+	} while (pThis->gargv != argv && *pThis->gargv);
+
+	flush_buffer(pThis);
+	return pThis->rval;
+}
+
+
+/* helper functions for conv_escape_str */
+
+static void
+/*ARGSUSED*/
+b_count(PPRINTFINSTANCE pThis, int ch)
+{
+	pThis->b_length++;
+	(void)ch;
+}
+
+/* Output one converted character for every 'x' in the 'format' */
+
+static void
+b_output(PPRINTFINSTANCE pThis, int ch)
+{
+	for (;;) {
+		switch (*pThis->b_fmt++) {
+		case 0:
+			pThis->b_fmt--;
+			return;
+		case ' ':
+			wrap_putchar(pThis, ' ');
+			break;
+		default:
+			wrap_putchar(pThis, ch);
+			return;
+		}
+	}
+}
+
+static int wrap_putchar(PPRINTFINSTANCE pThis, int ch)
+{
+#ifndef KMK_BUILTIN_STANDALONE
+	if (pThis->g_o) {
+		char sz[2];
+		sz[0] = ch; sz[1] = '\0';
+		pThis->g_o = variable_buffer_output(pThis->g_o, sz, 1);
+	}
+	else
+#endif
+	/* Buffered output. */
+	if (pThis->g_cchBuf + 1 < sizeof(pThis->g_achBuf)) {
+		pThis->g_achBuf[pThis->g_cchBuf++] = ch;
+	} else {
+		int rc = flush_buffer(pThis);
+		pThis->g_achBuf[pThis->g_cchBuf++] = ch;
+		if (rc)
+			return -1;
+	}
+	return 0;
+}
+
+static int wrap_printf(PPRINTFINSTANCE pThis, const char * fmt, ...)
+{
+	ssize_t cchRet;
+	va_list va;
+	char *pszTmp;
+
+	va_start(va, fmt);
+	cchRet = vasprintf(&pszTmp, fmt, va);
+	va_end(va);
+	if (cchRet >= 0) {
+#ifndef KMK_BUILTIN_STANDALONE
+		if (pThis->g_o) {
+			pThis->g_o = variable_buffer_output(pThis->g_o, pszTmp, cchRet);
+		} else
+#endif
+		{
+			if (cchRet + pThis->g_cchBuf <= sizeof(pThis->g_achBuf)) {
+				/* We've got space in the buffer. */
+				memcpy(&pThis->g_achBuf[pThis->g_cchBuf], pszTmp, cchRet);
+				pThis->g_cchBuf += cchRet;
+			} else {
+				/* Try write out complete lines. */
+				const char *pszLeft = pszTmp;
+				ssize_t     cchLeft = cchRet;
+
+				while (cchLeft > 0) {
+					const char *pchNewLine = strchr(pszLeft, '\n');
+					ssize_t     cchLine    = pchNewLine ? pchNewLine - pszLeft + 1 : cchLeft;
+					if (pThis->g_cchBuf + cchLine <= sizeof(pThis->g_achBuf)) {
+						memcpy(&pThis->g_achBuf[pThis->g_cchBuf], pszLeft, cchLine);
+						pThis->g_cchBuf += cchLine;
+					} else {
+						if (flush_buffer(pThis) < 0) {
+							return -1;
+						}
+#ifndef KMK_BUILTIN_STANDALONE
+						if (output_write_text(pThis->pCtx->pOut, 0,pszLeft, cchLine) < 1)
+#else
+						if (fwrite(pszLeft, cchLine, 1, stdout) < 1)
+#endif
+
+							return -1;
+					}
+					pszLeft += cchLine;
+					cchLeft -= cchLine;
+				}
+			}
+		}
+		free(pszTmp);
+	}
+	return (int)cchRet;
+}
+
+/**
+ * Flushes the g_abBuf/g_cchBuf.
+ */
+static int flush_buffer(PPRINTFINSTANCE pThis)
+{
+    ssize_t cchToWrite = pThis->g_cchBuf;
+    if (cchToWrite > 0) {
+#ifndef KMK_BUILTIN_STANDALONE
+		ssize_t cchWritten = output_write_text(pThis->pCtx->pOut, 0, pThis->g_achBuf, cchToWrite);
+#else
+		ssize_t cchWritten = fwrite(pThis->g_achBuf, 1, cchToWrite, stdout);
+#endif
+		pThis->g_cchBuf = 0;
+		if (cchWritten >= cchToWrite) {
+			/* likely */
+		} else {
+			ssize_t off = cchWritten;
+			if (cchWritten >= 0) {
+				off = cchWritten;
+			} else if (errno == EINTR) {
+				cchWritten = 0;
+			} else {
+				return -1;
+			}
+
+			while (off < cchToWrite) {
+#ifndef KMK_BUILTIN_STANDALONE
+				cchWritten = output_write_text(pThis->pCtx->pOut, 0, &pThis->g_achBuf[off], cchToWrite - off);
+#else
+				cchWritten = fwrite(&pThis->g_achBuf[off], 1, cchToWrite - off, stdout);
+#endif
+				if (cchWritten > 0) {
+					off += cchWritten;
+				} else if (errno == EINTR) {
+					/* nothing */
+				} else {
+					return -1;
+				}
+			}
+		}
+    }
+    return 0;
+}
+
+
+
+/*
+ * Print SysV echo(1) style escape string
+ *	Halts processing string if a \c escape is encountered.
+ */
+static void
+conv_escape_str(PPRINTFINSTANCE pThis, char *str, void (*do_putchar)(PPRINTFINSTANCE, int))
+{
+	int value;
+	int ch;
+	char c;
+
+	while ((ch = *str++) != '\0') {
+		if (ch != '\\') {
+			do_putchar(pThis, ch);
+			continue;
+		}
+
+		ch = *str++;
+		if (ch == 'c') {
+			/* \c as in SYSV echo - abort all processing.... */
+			pThis->rval |= 0x100;
+			break;
+		}
+
+		/*
+		 * %b string octal constants are not like those in C.
+		 * They start with a \0, and are followed by 0, 1, 2,
+		 * or 3 octal digits.
+		 */
+		if (ch == '0') {
+			int octnum = 0, i;
+			for (i = 0; i < 3; i++) {
+				if (!isdigit((unsigned char)*str) || *str > '7')
+					break;
+				octnum = (octnum << 3) | (*str++ - '0');
+			}
+			do_putchar(pThis, octnum);
+			continue;
+		}
+
+		/* \[M][^|-]C as defined by vis(3) */
+		if (ch == 'M' && *str == '-') {
+			do_putchar(pThis, 0200 | str[1]);
+			str += 2;
+			continue;
+		}
+		if (ch == 'M' && *str == '^') {
+			str++;
+			value = 0200;
+			ch = '^';
+		} else
+			value = 0;
+		if (ch == '^') {
+			ch = *str++;
+			if (ch == '?')
+				value |= 0177;
+			else
+				value |= ch & 037;
+			do_putchar(pThis, value);
+			continue;
+		}
+
+		/* Finally test for sequences valid in the format string */
+		str = conv_escape(pThis, str - 1, &c);
+		do_putchar(pThis, c);
+	}
+}
+
+/*
+ * Print "standard" escape characters
+ */
+static char *
+conv_escape(PPRINTFINSTANCE pThis, char *str, char *conv_ch)
+{
+	int value;
+	int ch;
+	char num_buf[4], *num_end;
+
+	ch = *str++;
+
+	switch (ch) {
+	case '0': case '1': case '2': case '3':
+	case '4': case '5': case '6': case '7':
+		num_buf[0] = ch;
+		ch = str[0];
+		num_buf[1] = ch;
+		num_buf[2] = ch ? str[1] : 0;
+		num_buf[3] = 0;
+		value = strtoul(num_buf, &num_end, 8);
+		str += num_end  - (num_buf + 1);
+		break;
+
+	case 'x':
+		/* Hexadecimal character constants are not required to be
+		   supported (by SuS v1) because there is no consistent
+		   way to detect the end of the constant.
+		   Supporting 2 byte constants is a compromise. */
+		ch = str[0];
+		num_buf[0] = ch;
+		num_buf[1] = ch ? str[1] : 0;
+		num_buf[2] = 0;
+		value = strtoul(num_buf, &num_end, 16);
+		str += num_end - num_buf;
+		break;
+
+	case '\\':	value = '\\';	break;	/* backslash */
+	case '\'':	value = '\'';	break;	/* single quote */
+	case '"':	value = '"';	break;	/* double quote */
+	case 'a':	value = '\a';	break;	/* alert */
+	case 'b':	value = '\b';	break;	/* backspace */
+	case 'e':	value = ESCAPE;	break;	/* escape */
+	case 'f':	value = '\f';	break;	/* form-feed */
+	case 'n':	value = '\n';	break;	/* newline */
+	case 'r':	value = '\r';	break;	/* carriage-return */
+	case 't':	value = '\t';	break;	/* tab */
+	case 'v':	value = '\v';	break;	/* vertical-tab */
+
+	default:
+		warnx(pThis->pCtx, "unknown escape sequence `\\%c'", ch);
+		pThis->rval = 1;
+		value = ch;
+		break;
+	}
+
+	*conv_ch = value;
+	return str;
+}
+
+/* expand a string so that everything is printable */
+
+static const char *
+conv_expand(PPRINTFINSTANCE pThis, const char *str)
+{
+	static const char no_memory[] = "<no memory>";
+	char *cp;
+	int ch;
+
+	if (pThis->conv_str)
+		free(pThis->conv_str);
+	/* get a buffer that is definitely large enough.... */
+	pThis->conv_str = cp = malloc(4 * strlen(str) + 1);
+	if (!cp)
+		return no_memory;
+
+	while ((ch = *(const unsigned char *)str++) != '\0') {
+		switch (ch) {
+		/* Use C escapes for expected control characters */
+		case '\\':	ch = '\\';	break;	/* backslash */
+		case '\'':	ch = '\'';	break;	/* single quote */
+		case '"':	ch = '"';	break;	/* double quote */
+		case '\a':	ch = 'a';	break;	/* alert */
+		case '\b':	ch = 'b';	break;	/* backspace */
+		case ESCAPE:	ch = 'e';	break;	/* escape */
+		case '\f':	ch = 'f';	break;	/* form-feed */
+		case '\n':	ch = 'n';	break;	/* newline */
+		case '\r':	ch = 'r';	break;	/* carriage-return */
+		case '\t':	ch = 't';	break;	/* tab */
+		case '\v':	ch = 'v';	break;	/* vertical-tab */
+		default:
+			/* Copy anything printable */
+			if (isprint(ch)) {
+				*cp++ = ch;
+				continue;
+			}
+			/* Use vis(3) encodings for the rest */
+			*cp++ = '\\';
+			if (ch & 0200) {
+				*cp++ = 'M';
+				ch &= ~0200;
+			}
+			if (ch == 0177) {
+				*cp++ = '^';
+				*cp++ = '?';
+				continue;
+			}
+			if (ch < 040) {
+				*cp++ = '^';
+				*cp++ = ch | 0100;
+				continue;
+			}
+			*cp++ = '-';
+			*cp++ = ch;
+			continue;
+		}
+		*cp++ = '\\';
+		*cp++ = ch;
+	}
+
+	*cp = 0;
+	return pThis->conv_str;
+}
+
+static char *
+mklong(PPRINTFINSTANCE pThis, const char *str, int ch, char copy[64])
+{
+	size_t len;
+
+	len = strlen(str) - 1;
+	if (len > 64 - 5) {
+		warnx(pThis->pCtx, "format %s too complex\n", str);
+		len = 4;
+	}
+	(void)memmove(copy, str, len);
+#ifndef _MSC_VER
+	copy[len++] = 'j';
+#else
+	copy[len++] = 'I';
+	copy[len++] = '6';
+	copy[len++] = '4';
+#endif
+	copy[len++] = ch;
+	copy[len] = '\0';
+	return copy;
+}
+
+static int
+getchr(PPRINTFINSTANCE pThis)
+{
+	if (!*pThis->gargv)
+		return 0;
+	return (int)**pThis->gargv++;
+}
+
+static char *
+getstr(PPRINTFINSTANCE pThis)
+{
+	static char empty[] = "";
+	if (!*pThis->gargv)
+		return empty;
+	return *pThis->gargv++;
+}
+
+static int
+getwidth(PPRINTFINSTANCE pThis)
+{
+	long val;
+	char *s, *ep;
+
+	s = *pThis->gargv;
+	if (!s)
+		return (0);
+	pThis->gargv++;
+
+	errno = 0;
+	val = strtoul(s, &ep, 0);
+	check_conversion(pThis, s, ep);
+
+	/* Arbitrarily 'restrict' field widths to 1Mbyte */
+	if (val < 0 || val > 1 << 20) {
+		warnx(pThis->pCtx, "%s: invalid field width", s);
+		return 0;
+	}
+
+	return val;
+}
+
+static intmax_t
+getintmax(PPRINTFINSTANCE pThis)
+{
+	intmax_t val;
+	char *cp, *ep;
+
+	cp = *pThis->gargv;
+	if (cp == NULL)
+		return 0;
+	pThis->gargv++;
+
+	if (*cp == '\"' || *cp == '\'')
+		return *(cp+1);
+
+	errno = 0;
+	val = strtoimax(cp, &ep, 0);
+	check_conversion(pThis, cp, ep);
+	return val;
+}
+
+static uintmax_t
+getuintmax(PPRINTFINSTANCE pThis)
+{
+	uintmax_t val;
+	char *cp, *ep;
+
+	cp = *pThis->gargv;
+	if (cp == NULL)
+		return 0;
+	pThis->gargv++;
+
+	if (*cp == '\"' || *cp == '\'')
+		return *(cp + 1);
+
+	/* strtoumax won't error -ve values */
+	while (isspace(*(unsigned char *)cp))
+		cp++;
+	if (*cp == '-') {
+		warnx(pThis->pCtx, "%s: expected positive numeric value", cp);
+		pThis->rval = 1;
+		return 0;
+	}
+
+	errno = 0;
+	val = strtoumax(cp, &ep, 0);
+	check_conversion(pThis, cp, ep);
+	return val;
+}
+
+static double
+getdouble(PPRINTFINSTANCE pThis)
+{
+	double val;
+	char *ep;
+	char *s;
+
+	s = *pThis->gargv;
+	if (!s)
+		return (0.0);
+	pThis->gargv++;
+
+	if (*s == '\"' || *s == '\'')
+		return (double) s[1];
+
+	errno = 0;
+	val = strtod(s, &ep);
+	check_conversion(pThis, s, ep);
+	return val;
+}
+
+static void
+check_conversion(PPRINTFINSTANCE pThis, const char *s, const char *ep)
+{
+	if (*ep) {
+		if (ep == s)
+			warnx(pThis->pCtx, "%s: expected numeric value", s);
+		else
+			warnx(pThis->pCtx, "%s: not completely converted", s);
+		pThis->rval = 1;
+	} else if (errno == ERANGE) {
+		warnx(pThis->pCtx, "%s: %s", s, strerror(ERANGE));
+		pThis->rval = 1;
+	}
+}
+
+static int
+usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+	kmk_builtin_ctx_printf(pCtx, fIsErr,
+	                       "usage: %s format [arg ...]\n"
+	                       "   or: %s --help\n"
+	                       "   or: %s --version\n",
+	                       pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName);
+	return 1;
+}
+
diff --git a/src/kmk/kmkbuiltin/redirect.c b/src/kmk/kmkbuiltin/redirect.c
new file mode 100644
index 0000000..f0d97d2
--- /dev/null
+++ b/src/kmk/kmkbuiltin/redirect.c
@@ -0,0 +1,2066 @@
+/* $Id: redirect.c 3564 2022-03-08 11:12:18Z bird $ */
+/** @file
+ * kmk_redirect - Do simple program <-> file redirection (++).
+ */
+
+/*
+ * Copyright (c) 2007-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#if defined(__APPLE__)
+/*# define _POSIX_C_SOURCE 1  / *  10.4 sdk and unsetenv  * / - breaks O_CLOEXEC on 10.8 */
+#endif
+#include "makeint.h"
+#include <assert.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#if defined(KBUILD_OS_WINDOWS) || defined(KBUILD_OS_OS2)
+# include <process.h>
+#endif
+#ifdef KBUILD_OS_WINDOWS
+# include <Windows.h>
+#endif
+#if defined(_MSC_VER)
+# include <ctype.h>
+# include <io.h>
+# include "quote_argv.h"
+#else
+# ifdef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
+#  if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050
+#   define USE_POSIX_SPAWN
+#  endif
+# elif !defined(KBUILD_OS_WINDOWS) && !defined(KBUILD_OS_OS2)
+#  define USE_POSIX_SPAWN
+# endif
+# include <unistd.h>
+# ifdef USE_POSIX_SPAWN
+#  include <spawn.h>
+# endif
+# include <sys/wait.h>
+#endif
+
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+#include "err.h"
+#include "kbuild_version.h"
+#ifdef KBUILD_OS_WINDOWS
+# include "nt/nt_child_inject_standard_handles.h"
+#endif
+#if defined(__gnu_hurd__) && !defined(KMK_BUILTIN_STANDALONE) /* need constant */
+# undef GET_PATH_MAX
+# undef PATH_MAX
+# define GET_PATH_MAX PATH_MAX
+#endif
+#include "kmkbuiltin.h"
+#ifdef KMK
+# ifdef KBUILD_OS_WINDOWS
+#  ifndef CONFIG_NEW_WIN_CHILDREN
+#   include "sub_proc.h"
+#  else
+#   include "../w32/winchildren.h"
+#  endif
+#  include "pathstuff.h"
+# endif
+#endif
+
+#ifdef __OS2__
+# define INCL_BASE
+# include <os2.h>
+# ifndef LIBPATHSTRICT
+#  define LIBPATHSTRICT 3
+# endif
+#endif
+
+#ifndef KMK_BUILTIN_STANDALONE
+extern void kmk_cache_exec_image_a(const char *); /* imagecache.c */
+#endif
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/* String + strlen tuple. */
+#define TUPLE(a_sz)     a_sz, sizeof(a_sz) - 1
+
+/** Only standard handles on windows. */
+#ifdef KBUILD_OS_WINDOWS
+# define ONLY_TARGET_STANDARD_HANDLES
+#endif
+
+
+static int kmk_redirect_usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+    /*                      0         1         2         3         4         5         6         7         8 */
+    /*                      012345678901234567890123456789012345678901234567890123456789012345678901234567890 */
+    kmk_builtin_ctx_printf(pCtx, fIsErr,
+                           "Usage: %s [-[rwa+tb]<fd> <file>] [-d<fd>=<src-fd>] [-c<fd>] [--stdin-pipe]\n"
+                           "           [-Z] [-E <var=val>] [-A <var=val>] [-P <var=val>] [-D <var>]\n"
+                           "           [-C <dir>] [--wcc-brain-damage] [-v] -- <program> [args]\n"
+                           "   or: %s --help\n"
+                           "   or: %s --version\n"
+                           "\n"
+                           "Options:\n"
+                           "-[rwa+tb]<fd> <file>\n"
+                           "    The rwa+tb is like for fopen, if not specified it defaults to w+.\n"
+                           "    The <fd> is either a number or an alias for the standard handles:\n"
+                           "       i = stdin\n"
+                           "       o = stdout\n"
+                           "       e = stderr\n"
+                           "-d\n"
+                           "    The -d switch duplicate the right hand file descriptor (src-fd) to the left\n"
+                           "    hand side one (fd).  The latter is limited to standard handles on windows.\n"
+                           "-c <fd>, --close <fd>\n"
+                           "    The -c switch will close the specified file descriptor. Limited to standard\n"
+                           "    handles on windows.\n"
+                           "--stdin-pipe\n"
+                           "    The --stdin-pipe switch will replace stdin with the read end of an\n"
+                           "    anonymous pipe.  This is for tricking things like rsh.exe that blocks\n"
+                           "    reading on stdin.\n"
+                           "-Z, --zap-env, --ignore-environment\n"
+                           "    The -Z switch zaps the environment.\n"
+                           "-E <var=val>, --set <var=val>, --env <var=val>\n"
+                           "    The -E (--set, --env) switch is for making changes to the environment\n"
+                           "    in an putenv fashion.\n"
+                           "-A <var=val>, --append  <var=val>\n"
+                           "    The -A switch appends to an environment variable in a putenv fashion.\n"
+                           "-D <var=val>, --prepend  <var=val>\n"
+                           "    The -D switch prepends to an environment variable in a putenv fashion.\n"
+                           "-U <var>, --unset <var>\n"
+                           "    The -U switch deletes an environment variable.\n"
+    /*                      0         1         2         3         4         5         6         7         8 */
+    /*                      012345678901234567890123456789012345678901234567890123456789012345678901234567890 */
+                           "-C <dir>, --chdir <dir>\n"
+                           "    The -C switch is for changing the current directory.  Please specify an\n"
+                           "    absolute program path as it's platform dependent whether this takes\n"
+                           "    effect before or after the executable is located.\n"
+                           "--wcc-brain-damage, --watcom-brain-damage\n"
+                           "    The --wcc-brain-damage switch is to work around wcc and wcc386\n"
+                           "    (Open Watcom) not following normal quoting conventions on Windows and OS/2.\n"
+                           "-v, --verbose\n"
+                           "    The -v switch is for making the thing more verbose.\n"
+                           "\n"
+                           "On OS/2 the kernel variables BEGINLIBPATH, ENDLIBPATH and LIBPATHSTRICT can be\n"
+                           "accessed as-if they were regular enviornment variables.\n"
+                           "\n"
+                           "This command was originally just a quick hack to avoid invoking the shell\n"
+                           "on Windows (cygwin) where forking is very expensive and has exhibited\n"
+                           "stability issues on SMP machines.  It has since grown into something like\n"
+                           "/usr/bin/env on steroids.\n"
+    /*                      0         1         2         3         4         5         6         7         8 */
+    /*                      012345678901234567890123456789012345678901234567890123456789012345678901234567890 */
+                           ,
+                           pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName);
+    return 2;
+}
+
+
+/**
+ * Decoded file descriptor operations.
+ */
+typedef struct REDIRECTORDERS
+{
+    enum {
+        kRedirectOrder_Invalid = 0,
+        kRedirectOrder_Close,
+        kRedirectOrder_Open,
+        kRedirectOrder_Dup
+    }           enmOrder;
+    /** The target file handle. */
+    int         fdTarget;
+    /** The source file name, -1 on close only.
+     * This is an opened file if pszFilename is set.  */
+    int         fdSource;
+    /** Whether to remove the file on failure cleanup. */
+    int         fRemoveOnFailure;
+    /** The open flags (for O_TEXT/O_BINARY) on windows. */
+    int         fOpen;
+    /** The filename - NULL if close only. */
+    const char *pszFilename;
+    /** The other pipe end, needs closing in cleanup. */
+    int         fdOtherPipeEnd;
+#ifndef USE_POSIX_SPAWN
+    /** Saved file descriptor. */
+    int         fdSaved;
+    /** Saved flags. */
+    int         fSaved;
+#endif
+} REDIRECTORDERS;
+
+
+static KBOOL kRedirectHasConflict(int fd, unsigned cOrders, REDIRECTORDERS *paOrders)
+{
+#ifdef ONLY_TARGET_STANDARD_HANDLES
+    return fd < 3;
+#else
+    while (cOrders-- > 0)
+        if (paOrders[cOrders].fdTarget == fd)
+            return K_TRUE;
+    return K_FALSE;
+#endif
+}
+
+
+/**
+ * Creates a pair of pipe descriptors that does not conflict with any previous
+ * orders.
+ *
+ * The pipe is open with both descriptors being inherited by the child as it's
+ * supposed to be a dummy pipe for stdin that won't break.
+ *
+ * @returns 0 on success, exit code on failure (error message displayed).
+ * @param   pCtx                The command execution context.
+ * @param   paFds               Where to return the pipe descriptors
+ * @param   cOrders             The number of orders.
+ * @param   paOrders            The order array.
+ * @param   fdTarget            The target descriptor (0).
+ */
+static int kRedirectCreateStdInPipeWithoutConflict(PKMKBUILTINCTX pCtx, int paFds[2],
+                                                   unsigned cOrders, REDIRECTORDERS *paOrders, int fdTarget)
+{
+    struct
+    {
+        int     aFds[2];
+    }           aTries[32];
+    unsigned    cTries = 0;
+
+    while (cTries < K_ELEMENTS(aTries))
+    {
+#ifdef _MSC_VER
+        int rc = _pipe(aTries[cTries].aFds, 0, _O_BINARY);
+#else
+        int rc = pipe(aTries[cTries].aFds);
+#endif
+        if (rc >= 0)
+        {
+            if (   !kRedirectHasConflict(aTries[cTries].aFds[0], cOrders, paOrders)
+                && !kRedirectHasConflict(aTries[cTries].aFds[1], cOrders, paOrders)
+#ifndef _MSC_VER
+                && aTries[cTries].aFds[0] != fdTarget
+                && aTries[cTries].aFds[1] != fdTarget
+#endif
+                )
+            {
+                paFds[0] = aTries[cTries].aFds[0];
+                paFds[1] = aTries[cTries].aFds[1];
+
+                while (cTries-- > 0)
+                {
+                    close(aTries[cTries].aFds[0]);
+                    close(aTries[cTries].aFds[1]);
+                }
+                return 0;
+            }
+        }
+        else
+        {
+            err(pCtx, -1, "failed to create stdin pipe (try #%u)", cTries + 1);
+            break;
+        }
+        cTries++;
+    }
+    if (cTries >= K_ELEMENTS(aTries))
+        errx(pCtx, -1, "failed to find a conflict free pair of pipe descriptor for stdin!");
+
+    /* cleanup */
+    while (cTries-- > 0)
+    {
+        close(aTries[cTries].aFds[0]);
+        close(aTries[cTries].aFds[1]);
+    }
+    return 1;
+}
+
+
+/**
+ * Creates a file descriptor for @a pszFilename that does not conflict with any
+ * previous orders.
+ *
+ * We need to be careful that there isn't a close or dup targetting the
+ * temporary file descriptor we return.  Also, we need to take care with the
+ * descriptor's inheritability.  It should only be inheritable if the returned
+ * descriptor matches the target descriptor (@a fdTarget).
+ *
+ * @returns File descriptor on success, -1 & err/errx on failure.
+ *
+ *          The returned file descriptor is not inherited (i.e. close-on-exec),
+ *          unless it matches @a fdTarget
+ *
+ * @param   pCtx                The command execution context.
+ * @param   pszFilename         The filename to open.
+ * @param   fOpen               The open flags.
+ * @param   fMode               The file creation mode (if applicable).
+ * @param   cOrders             The number of orders.
+ * @param   paOrders            The order array.
+ * @param   fRemoveOnFailure    Whether to remove the file on failure.
+ * @param   fdTarget            The target descriptor.
+ */
+static int kRedirectOpenWithoutConflict(PKMKBUILTINCTX pCtx, const char *pszFilename, int fOpen, mode_t fMode,
+                                        unsigned cOrders, REDIRECTORDERS *paOrders, int fRemoveOnFailure, int fdTarget)
+{
+#ifdef _O_NOINHERIT
+    int const   fNoInherit = _O_NOINHERIT;
+#elif defined(O_NOINHERIT)
+    int const   fNoInherit = O_NOINHERIT;
+#elif defined(O_CLOEXEC)
+    int const   fNoInherit = O_CLOEXEC;
+#else
+    int const   fNoInherit = 0;
+# define USE_FD_CLOEXEC
+#endif
+    int         aFdTries[32];
+    unsigned    cTries;
+    int         fdOpened;
+
+#ifdef KBUILD_OS_WINDOWS
+    if (strcmp(pszFilename, "/dev/null") == 0)
+        pszFilename = "nul";
+#endif
+
+    /* Open it first. */
+    fdOpened = open(pszFilename, fOpen | fNoInherit, fMode);
+    if (fdOpened < 0)
+        return err(pCtx, -1, "open(%s,%#x,) failed", pszFilename, fOpen);
+
+    /* Check for conflicts. */
+    if (!kRedirectHasConflict(fdOpened, cOrders, paOrders))
+    {
+#ifndef KBUILD_OS_WINDOWS
+        if (fdOpened != fdTarget)
+            return fdOpened;
+# ifndef USE_FD_CLOEXEC
+        if (fcntl(fdOpened, F_SETFD, 0) != -1)
+# endif
+#endif
+            return fdOpened;
+    }
+
+    /*
+     * Do conflict resolving.
+     */
+    cTries = 1;
+    aFdTries[cTries++] = fdOpened;
+    while (cTries < K_ELEMENTS(aFdTries))
+    {
+        fdOpened = open(pszFilename, fOpen | fNoInherit, fMode);
+        if (fdOpened >= 0)
+        {
+            if (!kRedirectHasConflict(fdOpened, cOrders, paOrders))
+            {
+#ifndef KBUILD_OS_WINDOWS
+# ifdef USE_FD_CLOEXEC
+                if (   fdOpened == fdTarget
+                    || fcntl(fdOpened, F_SETFD, FD_CLOEXEC) != -1)
+# else
+                if (   fdOpened != fdTarget
+                    || fcntl(fdOpened, F_SETFD, 0) != -1)
+# endif
+#endif
+                {
+                    while (cTries-- > 0)
+                        close(aFdTries[cTries]);
+                    return fdOpened;
+                }
+            }
+
+        }
+        else
+        {
+            err(pCtx, -1, "open(%s,%#x,) #%u failed", pszFilename, cTries + 1, fOpen);
+            break;
+        }
+        aFdTries[cTries++] = fdOpened;
+    }
+
+    /*
+     * Give up.
+     */
+    if (fdOpened >= 0)
+        errx(pCtx, -1, "failed to find a conflict free file descriptor for '%s'!", pszFilename);
+
+    while (cTries-- > 0)
+        close(aFdTries[cTries]);
+    return -1;
+}
+
+
+/**
+ * Cleans up the file operation orders.
+ *
+ * This does not restore stuff, just closes handles we've opened for the child.
+ *
+ * @param   cOrders         Number of file operation orders.
+ * @param   paOrders        The file operation orders.
+ * @param   fFailed         Set if it's a failure.
+ */
+static void kRedirectCleanupFdOrders(unsigned cOrders, REDIRECTORDERS *paOrders, KBOOL fFailure)
+{
+    unsigned i = cOrders;
+    while (i-- > 0)
+    {
+        if (   paOrders[i].enmOrder == kRedirectOrder_Open
+            && paOrders[i].fdSource != -1)
+        {
+            close(paOrders[i].fdSource);
+            paOrders[i].fdSource = -1;
+
+            if (paOrders[i].fdOtherPipeEnd >= 0)
+            {
+                close(paOrders[i].fdOtherPipeEnd);
+                paOrders[i].fdOtherPipeEnd = -1;
+            }
+
+            if (   fFailure
+                && paOrders[i].fRemoveOnFailure
+                && paOrders[i].pszFilename)
+                remove(paOrders[i].pszFilename);
+        }
+    }
+}
+
+#if !defined(USE_POSIX_SPAWN) && !defined(KBUILD_OS_WINDOWS)
+
+/**
+ * Wrapper that chooses between fprintf and kmk_builtin_ctx_printf to get
+ * an error message to the user.
+ *
+ * @param   pCtx            The command execution context.
+ * @param   pWorkingStdErr  Work stderr.
+ * @param   pszFormat       The message format string.
+ * @param   ...             Format arguments.
+ */
+static void safe_err_printf(PKMKBUILTINCTX pCtx, FILE *pWorkingStdErr, const char *pszFormat, ...)
+{
+    char    szMsg[4096];
+    size_t  cchMsg;
+    va_list va;
+
+    va_start(va, pszFormat);
+    vsnprintf(szMsg, sizeof(szMsg) - 1, pszFormat, va);
+    va_end(va);
+    szMsg[sizeof(szMsg) - 1] = '\0';
+    cchMsg = strlen(szMsg);
+
+#ifdef KMK_BUILTIN_STANDALONE
+    (void)pCtx;
+#else
+    if (pCtx->pOut && pCtx->pOut->syncout)
+        output_write_text(pCtx->pOut, 1, szMsg, cchMsg);
+    else
+#endif
+        fwrite(szMsg, cchMsg, 1, pWorkingStdErr);
+}
+
+
+/**
+ * Saves a file handle to one which isn't inherited and isn't affected by the
+ * file orders.
+ *
+ * @returns 0 on success, non-zero exit code on failure.
+ * @param   pCtx            The command execution context.
+ * @param   pToSave         Pointer to the file order to save the target
+ *                          descriptor of.
+ * @param   cOrders         Number of file orders.
+ * @param   paOrders        The array of file orders.
+ * @param   ppWorkingStdErr Pointer to a pointer to a working stderr.  This will
+ *                          get replaced if we're saving stderr, so that we'll
+ *                          keep having a working one to report failures to.
+ */
+static int kRedirectSaveHandle(PKMKBUILTINCTX pCtx, REDIRECTORDERS *pToSave, unsigned cOrders,
+                               REDIRECTORDERS *paOrders, FILE **ppWorkingStdErr)
+{
+    int fdToSave = pToSave->fdTarget;
+    int rcRet    = 10;
+
+    /*
+     * First, check if there's actually handle here that needs saving.
+     */
+    pToSave->fSaved = fcntl(pToSave->fdTarget, F_GETFD, 0);
+    if (pToSave->fSaved != -1)
+    {
+        /*
+         * Try up to 32 times to get a duplicate descriptor that doesn't conflict.
+         */
+        int aFdTries[32];
+        int cTries = 0;
+        do
+        {
+            /* Duplicate the handle (windows makes this complicated). */
+            int fdDup;
+            fdDup = dup(fdToSave);
+            if (fdDup == -1)
+            {
+                safe_err_printf(pCtx, *ppWorkingStdErr, "%s: dup(%#x) failed: %u\n", pCtx->pszProgName, fdToSave, strerror(errno));
+                break;
+            }
+            /* Is the duplicate usable? */
+            if (!kRedirectHasConflict(fdDup, cOrders, paOrders))
+            {
+                pToSave->fdSaved = fdDup;
+                if (   *ppWorkingStdErr == stderr
+                    && fdToSave == fileno(*ppWorkingStdErr))
+                {
+                    *ppWorkingStdErr = fdopen(fdDup, "wt");
+                    if (*ppWorkingStdErr == NULL)
+                    {
+                        safe_err_printf(pCtx, stderr, "%s: fdopen(%d,\"wt\") failed: %s\n", pCtx->pszProgName, fdDup, strerror(errno));
+                        *ppWorkingStdErr = stderr;
+                        close(fdDup);
+                        break;
+                    }
+                }
+                rcRet = 0;
+                break;
+            }
+
+            /* Not usuable, stash it and try again. */
+            aFdTries[cTries++] = fdDup;
+        } while (cTries < K_ELEMENTS(aFdTries));
+
+        /*
+         * Clean up unused duplicates.
+         */
+        while (cTries-- > 0)
+            close(aFdTries[cTries]);
+    }
+    else
+    {
+        /*
+         * Nothing to save.
+         */
+        pToSave->fdSaved = -1;
+        rcRet = 0;
+    }
+    return rcRet;
+}
+
+
+/**
+ * Restores the target file descriptors affected by the file operation orders.
+ *
+ * @param   pCtx            The command execution context.
+ * @param   cOrders         Number of file operation orders.
+ * @param   paOrders        The file operation orders.
+ * @param   ppWorkingStdErr Pointer to a pointer to the working stderr.  If this
+ *                          is one of the saved file descriptors, we'll restore
+ *                          it to stderr.
+ */
+static void kRedirectRestoreFdOrders(PKMKBUILTINCTX pCtx, unsigned cOrders, REDIRECTORDERS *paOrders, FILE **ppWorkingStdErr)
+{
+    int iSavedErrno = errno;
+    unsigned i = cOrders;
+    while (i-- > 0)
+    {
+        if (paOrders[i].fdSaved != -1)
+        {
+            KBOOL fRestoreStdErr = *ppWorkingStdErr != stderr
+                                 && paOrders[i].fdSaved == fileno(*ppWorkingStdErr);
+            if (dup2(paOrders[i].fdSaved, paOrders[i].fdTarget) != -1)
+            {
+                close(paOrders[i].fdSaved);
+                paOrders[i].fdSaved = -1;
+
+                if (fRestoreStdErr)
+                {
+                    *ppWorkingStdErr = stderr;
+                    assert(fileno(stderr) == paOrders[i].fdTarget);
+                }
+            }
+            else
+                safe_err_printf(pCtx, *ppWorkingStdErr, "%s: dup2(%d,%d) failed: %s\n",
+                                pCtx->pszProgName, paOrders[i].fdSaved, paOrders[i].fdTarget, strerror(errno));
+        }
+
+        if (paOrders[i].fSaved != -1)
+        {
+            if (fcntl(paOrders[i].fdTarget, F_SETFD, paOrders[i].fSaved & FD_CLOEXEC) != -1)
+                paOrders[i].fSaved = -1;
+            else
+                safe_err_printf(pCtx, *ppWorkingStdErr, "%s: fcntl(%d,F_SETFD,%s) failed: %s\n",
+                                pCtx->pszProgName, paOrders[i].fdTarget, paOrders[i].fSaved & FD_CLOEXEC ? "FD_CLOEXEC" : "0",
+                                strerror(errno));
+        }
+    }
+    errno = iSavedErrno;
+}
+
+
+/**
+ * Executes the file operation orders.
+ *
+ * @returns 0 on success, exit code on failure.
+ * @param   pCtx            The command execution context.
+ * @param   cOrders         Number of file operation orders.
+ * @param   paOrders        File operation orders to execute.
+ * @param   ppWorkingStdErr Where to return a working stderr (mainly for
+ *                          kRedirectRestoreFdOrders).
+ */
+static int kRedirectExecFdOrders(PKMKBUILTINCTX pCtx, unsigned cOrders, REDIRECTORDERS *paOrders, FILE **ppWorkingStdErr)
+{
+    unsigned i;
+
+    *ppWorkingStdErr = stderr;
+    for (i = 0; i < cOrders; i++)
+    {
+        int rcExit = 10;
+        switch (paOrders[i].enmOrder)
+        {
+            case kRedirectOrder_Close:
+            {
+                /* If the handle isn't used by any of the following operation,
+                   just mark it as non-inheritable if necessary. */
+                int const fdTarget = paOrders[i].fdTarget;
+                unsigned j;
+                for (j = i + 1; j < cOrders; j++)
+                    if (paOrders[j].fdTarget == fdTarget)
+                        break;
+                if (j >= cOrders)
+                {
+                    paOrders[j].fSaved = fcntl(fdTarget, F_GETFD, 0);
+                    if (paOrders[j].fSaved != -1)
+                    {
+                        if (paOrders[j].fSaved & FD_CLOEXEC)
+                            rcExit = 0;
+                        else if (   fcntl(fdTarget, F_SETFD, FD_CLOEXEC) != -1
+                                 || errno == EBADF)
+                            rcExit = 0;
+                        else
+                            safe_err_printf(pCtx, *ppWorkingStdErr, "%s: fcntl(%d,F_SETFD,FD_CLOEXEC) failed: %s\n",
+                                            pCtx->pszProgName, fdTarget, strerror(errno));
+                    }
+                    else if (errno == EBADF)
+                        rcExit = 0;
+                    else
+                        safe_err_printf(pCtx, *ppWorkingStdErr, "%s: fcntl(%d,F_GETFD,0) failed: %s\n",
+                                        pCtx->pszProgName, fdTarget, strerror(errno));
+                }
+                else
+                    rcExit = kRedirectSaveHandle(pCtx, &paOrders[i], cOrders, paOrders, ppWorkingStdErr);
+                break;
+            }
+
+            case kRedirectOrder_Dup:
+            case kRedirectOrder_Open:
+                rcExit = kRedirectSaveHandle(pCtx, &paOrders[i], cOrders, paOrders, ppWorkingStdErr);
+                if (rcExit == 0)
+                {
+                    if (dup2(paOrders[i].fdSource, paOrders[i].fdTarget) != -1)
+                        rcExit = 0;
+                    else
+                    {
+                        if (paOrders[i].enmOrder == kRedirectOrder_Open)
+                            safe_err_printf(pCtx, *ppWorkingStdErr, "%s: dup2(%d [%s],%d) failed: %s\n", pCtx->pszProgName,
+                                            paOrders[i].fdSource, paOrders[i].pszFilename, paOrders[i].fdTarget, strerror(errno));
+                        else
+                            safe_err_printf(pCtx, *ppWorkingStdErr, "%s: dup2(%d,%d) failed: %s\n",
+                                            pCtx->pszProgName, paOrders[i].fdSource, paOrders[i].fdTarget, strerror(errno));
+                        rcExit = 10;
+                    }
+                }
+                break;
+
+            default:
+                safe_err_printf(pCtx, *ppWorkingStdErr, "%s: error! invalid enmOrder=%d\n", pCtx->pszProgName, paOrders[i].enmOrder);
+                rcExit = 99;
+                break;
+        }
+
+        if (rcExit != 0)
+        {
+            kRedirectRestoreFdOrders(pCtx, i, paOrders, ppWorkingStdErr);
+            return rcExit;
+        }
+    }
+
+    return 0;
+}
+
+#endif /* !USE_POSIX_SPAWN */
+#ifdef KBUILD_OS_WINDOWS
+
+/**
+ * Registers the child process with a care provider or waits on it to complete.
+ *
+ * @returns 0 or non-zero success indicator or child exit code, depending on
+ *          the value pfIsChildExitCode points to.
+ * @param   pCtx                The command execution context.
+ * @param   hProcess            The child process handle.
+ * @param   cVerbosity          The verbosity level.
+ * @param   pPidSpawned         Where to return the PID of the spawned child
+ *                              when we're inside KMK and we're return without
+ *                              waiting.
+ * @param   pfIsChildExitCode   Where to indicate whether the return exit code
+ *                              is from the child or from our setup efforts.
+ */
+static int kRedirectPostnatalCareOnWindows(PKMKBUILTINCTX pCtx, HANDLE hProcess, unsigned cVerbosity,
+                                           pid_t *pPidSpawned, KBOOL *pfIsChildExitCode)
+{
+    int   rcExit;
+    DWORD dwTmp;
+
+# ifndef KMK_BUILTIN_STANDALONE
+    /*
+     * Try register the child with a childcare provider, i.e. winchildren.c
+     * or sub_proc.c.
+     */
+#  ifndef CONFIG_NEW_WIN_CHILDREN
+    if (process_kmk_register_redirect(hProcess, pPidSpawned) == 0)
+#  else
+    if (   pPidSpawned
+        && MkWinChildCreateRedirect((intptr_t)hProcess, pPidSpawned) == 0)
+#  endif
+    {
+        if (cVerbosity > 0)
+            warnx(pCtx, "debug: spawned %d", *pPidSpawned);
+        *pfIsChildExitCode = K_FALSE;
+        return 0;
+    }
+#  ifndef CONFIG_NEW_WIN_CHILDREN
+    warn(pCtx, "sub_proc is out of slots, waiting for child...");
+#  else
+    if (pPidSpawned)
+        warn(pCtx, "MkWinChildCreateRedirect failed...");
+#  endif
+# endif
+
+    /*
+     * Either the provider is outbooked or we're not in a context (like
+     * standalone) where we get help with waiting and must to it ourselves
+     */
+    dwTmp = WaitForSingleObject(hProcess, INFINITE);
+    if (dwTmp != WAIT_OBJECT_0)
+        warnx(pCtx, "WaitForSingleObject failed: %#x\n", dwTmp);
+
+    if (GetExitCodeProcess(hProcess, &dwTmp))
+        rcExit = (int)dwTmp;
+    else
+    {
+        warnx(pCtx, "GetExitCodeProcess failed: %u\n", GetLastError());
+        TerminateProcess(hProcess, 127);
+        rcExit = 127;
+    }
+
+    CloseHandle(hProcess);
+    *pfIsChildExitCode = K_TRUE;
+    return rcExit;
+}
+
+
+/**
+ * Tries to locate the executable image.
+ *
+ * This isn't quite perfect yet...
+ *
+ * @returns pszExecutable or pszBuf with valid string.
+ * @param   pszExecutable   The specified executable.
+ * @param   pszBuf          Buffer to return a modified path in.
+ * @param   cbBuf           Size of return buffer.
+ * @param   pszPath         The search path.
+ */
+static const char *kRedirectCreateProcessWindowsFindImage(const char *pszExecutable, char *pszBuf, size_t cbBuf,
+                                                          const char *pszPath)
+{
+    /*
+     * Analyze the name.
+     */
+    size_t const cchExecutable = strlen(pszExecutable);
+    BOOL         fHavePath = FALSE;
+    BOOL         fHaveSuffix = FALSE;
+    size_t       off = cchExecutable;
+    while (off > 0)
+    {
+        char ch = pszExecutable[--off];
+        if (ch == '.')
+        {
+            fHaveSuffix = TRUE;
+            break;
+        }
+        if (ch == '\\' || ch == '/' || ch == ':')
+        {
+            fHavePath = TRUE;
+            break;
+        }
+    }
+    if (!fHavePath)
+        while (off > 0)
+        {
+            char ch = pszExecutable[--off];
+            if (ch == '\\' || ch == '/' || ch == ':')
+            {
+                fHavePath = TRUE;
+                break;
+            }
+        }
+   /*
+    * If no path, search the path value.
+    */
+   if (!fHavePath)
+   {
+       char *pszFilename;
+       DWORD cchFound = SearchPathA(pszPath, pszExecutable, fHaveSuffix ? NULL : ".exe", cbBuf, pszBuf, &pszFilename);
+       if (cchFound)
+           return pszBuf;
+   }
+
+   /*
+    * If no suffix, try add .exe.
+    */
+   if (   !fHaveSuffix
+       && GetFileAttributesA(pszExecutable) == INVALID_FILE_ATTRIBUTES
+       && cchExecutable + 4 < cbBuf)
+   {
+       memcpy(pszBuf, pszExecutable, cchExecutable);
+       memcpy(&pszBuf[cchExecutable], ".exe", 5);
+       if (GetFileAttributesA(pszBuf) != INVALID_FILE_ATTRIBUTES)
+           return pszBuf;
+   }
+
+   return pszExecutable;
+}
+
+
+/**
+ * Turns the orders into input for nt_child_inject_standard_handles and
+ * winchildren.c
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pCtx                The command execution context.
+ * @param   cOrders             Number of file operation orders.
+ * @param   paOrders            The file operation orders.
+ * @param   pafReplace          Replace (TRUE) or leave alone (FALSE) indicator
+ *                              for each of the starndard handles.
+ * @param   pahChild            Array of standard handles for injecting into the
+ *                              child.  Parallel to pafReplace.
+ */
+static int kRedirectOrderToWindowsHandles(PKMKBUILTINCTX pCtx, unsigned cOrders, REDIRECTORDERS *paOrders,
+                                          BOOL pafReplace[3], HANDLE pahChild[3])
+{
+    int i;
+    for (i = 0; i < (int)cOrders; i++)
+    {
+        int fdTarget = paOrders[i].fdTarget;
+        assert(fdTarget >= 0 && fdTarget < 3);
+        switch (paOrders[i].enmOrder)
+        {
+            case kRedirectOrder_Open:
+                if (   (paOrders[i].fOpen & O_APPEND)
+                    && lseek(paOrders[i].fdSource, 0, SEEK_END) < 0)
+                    return err(pCtx, 10, "lseek-to-end failed on %d (for %d)", paOrders[i].fdSource, fdTarget);
+                /* fall thru */
+            case kRedirectOrder_Dup:
+                pahChild[fdTarget] = (HANDLE)_get_osfhandle(paOrders[i].fdSource);
+                if (pahChild[fdTarget] == NULL || pahChild[fdTarget] == INVALID_HANDLE_VALUE)
+                    return err(pCtx, 10, "_get_osfhandle failed on %d (for %d)", paOrders[i].fdSource, fdTarget);
+                break;
+
+            case kRedirectOrder_Close:
+                pahChild[fdTarget] = NULL;
+                break;
+
+            default:
+                assert(0);
+        }
+        pafReplace[fdTarget] = TRUE;
+    }
+    return 0;
+}
+
+
+/**
+ * Alternative approach on windows that use CreateProcess and doesn't require
+ * any serialization wrt handles and CWD.
+ *
+ * @returns 0 on success, non-zero on failure to create.
+ * @param   pCtx                The command execution context.
+ * @param   pszExecutable       The child process executable.
+ * @param   cArgs               Number of arguments.
+ * @param   papszArgs           The child argument vector.
+ * @param   papszEnvVars        The child environment vector.
+ * @param   pszCwd              The current working directory of the child.
+ * @param   cOrders             Number of file operation orders.
+ * @param   paOrders            The file operation orders.
+ * @param   phProcess           Where to return process handle.
+ */
+static int kRedirectCreateProcessWindows(PKMKBUILTINCTX pCtx, const char *pszExecutable, int cArgs, char **papszArgs,
+                                         char **papszEnvVars, const char *pszCwd, unsigned cOrders,
+                                         REDIRECTORDERS *paOrders, HANDLE *phProcess)
+{
+    size_t cbArgs;
+    char  *pszCmdLine;
+    size_t cbEnv;
+    char  *pszzEnv;
+    char  *pch;
+    int    i;
+    int    rc;
+
+    /*
+     * Start by making the the command line.  We just need to put spaces
+     * between the arguments since quote_argv don't the quoting already.
+     */
+    cbArgs = 0;
+    for (i = 0; i < cArgs; i++)
+        cbArgs += strlen(papszArgs[i]) + 1;
+    pszCmdLine = pch = (char *)malloc(cbArgs);
+    if (!pszCmdLine)
+        return errx(pCtx, 9, "out of memory!");
+    for (i = 0; i < cArgs; i++)
+    {
+        size_t cch;
+        if (i != 0)
+            *pch++ = ' ';
+        cch = strlen(papszArgs[i]);
+        memcpy(pch, papszArgs[i], cch);
+        pch += cch;
+    }
+    *pch++ = '\0';
+    assert(pch - pszCmdLine == cbArgs);
+
+    /*
+     * The environment vector is also simple.
+     */
+    cbEnv = 0;
+    for (i = 0; papszEnvVars[i]; i++)
+        cbEnv += strlen(papszEnvVars[i]) + 1;
+    cbEnv++;
+    pszzEnv = pch = (char *)malloc(cbEnv);
+    if (pszzEnv)
+    {
+        char                szAbsExe[1024];
+        const char         *pszPathVal = NULL;
+        STARTUPINFOA        StartupInfo;
+        PROCESS_INFORMATION ProcInfo = { NULL, NULL, 0, 0 };
+
+        for (i = 0; papszEnvVars[i]; i++)
+        {
+            size_t cbSrc = strlen(papszEnvVars[i]) + 1;
+            memcpy(pch, papszEnvVars[i], cbSrc);
+            if (   !pszPathVal
+                && cbSrc >= 5
+                && pch[4] == '='
+                && (pch[0] == 'P' || pch[0] == 'p')
+                && (pch[1] == 'A' || pch[1] == 'a')
+                && (pch[2] == 'T' || pch[2] == 't')
+                && (pch[3] == 'H' || pch[3] == 'h'))
+                pszPathVal = &pch[5];
+            pch += cbSrc;
+        }
+        *pch++ = '\0';
+        assert(pch - pszzEnv == cbEnv);
+
+        /*
+         * Locate the executable.
+         */
+        pszExecutable = kRedirectCreateProcessWindowsFindImage(pszExecutable, szAbsExe, sizeof(szAbsExe), pszPathVal);
+
+        /*
+         * Do basic startup info preparation.
+         */
+        memset(&StartupInfo, 0, sizeof(StartupInfo));
+        StartupInfo.cb = sizeof(StartupInfo);
+        GetStartupInfoA(&StartupInfo);
+        StartupInfo.lpReserved2 = 0; /* No CRT file handle + descriptor info possible, sorry. */
+        StartupInfo.cbReserved2 = 0;
+        StartupInfo.dwFlags &= ~STARTF_USESTDHANDLES;
+
+        /*
+         * If there are no redirection orders, we're good.
+         */
+        if (!cOrders)
+        {
+            if (CreateProcessA(pszExecutable, pszCmdLine, NULL /*pProcAttrs*/, NULL /*pThreadAttrs*/,
+                               FALSE /*fInheritHandles*/, 0 /*fFlags*/, pszzEnv, pszCwd, &StartupInfo, &ProcInfo))
+            {
+                CloseHandle(ProcInfo.hThread);
+                *phProcess = ProcInfo.hProcess;
+# ifndef KMK_BUILTIN_STANDALONE
+                kmk_cache_exec_image_a(pszExecutable);
+# endif
+                rc = 0;
+            }
+            else
+                rc = errx(pCtx, 10, "CreateProcessA(%s) failed: %u", pszExecutable, GetLastError());
+        }
+        else
+        {
+            /*
+             * Execute the orders, ending up with three handles we need to
+             * implant into the guest process.
+             *
+             * This isn't 100% perfect wrt O_APPEND, but it'll have to do for now.
+             */
+            BOOL   afReplace[3] = { FALSE, FALSE, FALSE };
+            HANDLE ahChild[3]   = { NULL,  NULL,  NULL  };
+            rc = kRedirectOrderToWindowsHandles(pCtx, cOrders, paOrders, afReplace, ahChild);
+            if (rc == 0)
+            {
+                /*
+                 * Start the process in suspended animation so we can inject handles.
+                 */
+                if (CreateProcessA(pszExecutable, pszCmdLine, NULL /*pProcAttrs*/, NULL /*pThreadAttrs*/,
+                                   FALSE /*fInheritHandles*/, CREATE_SUSPENDED, pszzEnv, pszCwd, &StartupInfo, &ProcInfo))
+                {
+                    unsigned  i;
+
+                    /* Inject the handles and try make it start executing. */
+                    char szErrMsg[128];
+                    rc = nt_child_inject_standard_handles(ProcInfo.hProcess, afReplace, ahChild, szErrMsg, sizeof(szErrMsg));
+                    if (rc)
+                        rc = errx(pCtx, 10, "%s", szErrMsg);
+                    else if (!ResumeThread(ProcInfo.hThread))
+                        rc = errx(pCtx, 10, "ResumeThread failed: %u", GetLastError());
+
+                    /* Duplicate the write end of any stdin pipe handles into the child. */
+                    for (i = 0; i < cOrders; i++)
+                        if (paOrders[i].fdOtherPipeEnd >= 0)
+                        {
+                            HANDLE hIgnored = INVALID_HANDLE_VALUE;
+                            HANDLE hPipeW   = (HANDLE)_get_osfhandle(paOrders[i].fdOtherPipeEnd);
+                            if (!DuplicateHandle(GetCurrentProcess(), hPipeW, ProcInfo.hProcess, &hIgnored, 0 /*fDesiredAccess*/,
+                                                 TRUE /*fInheritable*/, DUPLICATE_SAME_ACCESS))
+                                rc = errx(pCtx, 10, "DuplicateHandle failed on other stdin pipe end %d/%p: %u",
+                                          paOrders[i].fdOtherPipeEnd, hPipeW, GetLastError());
+                        }
+
+                    /* Kill it if any of that fails. */
+                    if (rc != 0)
+                        TerminateProcess(ProcInfo.hProcess, rc);
+
+                    CloseHandle(ProcInfo.hThread);
+                    *phProcess = ProcInfo.hProcess;
+# ifndef KMK_BUILTIN_STANDALONE
+                    kmk_cache_exec_image_a(pszExecutable);
+# endif
+                    rc = 0;
+                }
+                else
+                    rc = errx(pCtx, 10, "CreateProcessA(%s) failed: %u", pszExecutable, GetLastError());
+            }
+        }
+        free(pszzEnv);
+    }
+    else
+        rc = errx(pCtx, 9, "out of memory!");
+    free(pszCmdLine);
+    return rc;
+}
+
+# if !defined(KMK_BUILTIN_STANDALONE) && defined(CONFIG_NEW_WIN_CHILDREN)
+/**
+ * Pass the problem on to winchildren.c when we're on one of its workers.
+ *
+ * @returns 0 on success, non-zero on failure to create.
+ * @param   pCtx                The command execution context.
+ * @param   pszExecutable       The child process executable.
+ * @param   cArgs               Number of arguments.
+ * @param   papszArgs           The child argument vector.
+ * @param   papszEnvVars        The child environment vector.
+ * @param   pszCwd              The current working directory of the child.
+ * @param   cOrders             Number of file operation orders.
+ * @param   paOrders            The file operation orders.
+ * @param   phProcess           Where to return process handle.
+ * @param   pfIsChildExitCode   Where to indicate whether the return exit code
+ *                              is from the child or from our setup efforts.
+ */
+static int kRedirectExecProcessWithinOnWorker(PKMKBUILTINCTX pCtx, const char *pszExecutable, int cArgs, char **papszArgs,
+                                              char **papszEnvVars, const char *pszCwd, unsigned cOrders,
+                                              REDIRECTORDERS *paOrders, KBOOL *pfIsChildExitCode)
+{
+    BOOL   afReplace[3] = { FALSE, FALSE, FALSE };
+    HANDLE ahChild[3]   = { NULL,  NULL,  NULL  };
+    int rc = kRedirectOrderToWindowsHandles(pCtx, cOrders, paOrders, afReplace, ahChild);
+    if (rc == 0)
+    {
+        rc = MkWinChildBuiltInExecChild(pCtx->pvWorker, pszExecutable, papszArgs, TRUE /*fQuotedArgv*/,
+                                        papszEnvVars, pszCwd, afReplace, ahChild);
+        *pfIsChildExitCode = K_TRUE;
+    }
+    return rc;
+}
+# endif /* !KMK_BUILTIN_STANDALONE */
+
+#endif /* KBUILD_OS_WINDOWS */
+
+/**
+ * Does the child spawning .
+ *
+ * @returns Exit code.
+ * @param   pCtx                The command execution context.
+ * @param   pszExecutable       The child process executable.
+ * @param   cArgs               Number of arguments.
+ * @param   papszArgs           The child argument vector.
+ * @param   fWatcomBrainDamage  Whether MSC need to do quoting according to
+ *                              weird Watcom WCC rules.
+ * @param   papszEnvVars        The child environment vector.
+ * @param   pszCwd              The current working directory of the child.
+ * @param   pszSavedCwd         The saved current working directory.  This is
+ *                              NULL if the CWD doesn't need changing.
+ * @param   cOrders             Number of file operation orders.
+ * @param   paOrders            The file operation orders.
+ * @param   pFileActions        The posix_spawn file actions.
+ * @param   cVerbosity          The verbosity level.
+ * @param   pPidSpawned         Where to return the PID of the spawned child
+ *                              when we're inside KMK and we're return without
+ *                              waiting.
+ * @param   pfIsChildExitCode   Where to indicate whether the return exit code
+ *                              is from the child or from our setup efforts.
+ */
+static int kRedirectDoSpawn(PKMKBUILTINCTX pCtx, const char *pszExecutable, int cArgs, char **papszArgs, int fWatcomBrainDamage,
+                            char **papszEnvVars, const char *pszCwd, const char *pszSavedCwd,
+                            unsigned cOrders, REDIRECTORDERS *paOrders,
+#ifdef USE_POSIX_SPAWN
+                            posix_spawn_file_actions_t *pFileActions,
+#endif
+                            unsigned cVerbosity,
+#ifdef KMK
+                            pid_t *pPidSpawned,
+#endif
+                            KBOOL *pfIsChildExitCode)
+{
+    int     rcExit = 0;
+    int     i;
+#ifdef _MSC_VER
+    char  **papszArgsOriginal = papszArgs;
+#endif
+    *pfIsChildExitCode = K_FALSE;
+
+#ifdef _MSC_VER
+    /*
+     * Do MSC parameter quoting.
+     */
+    papszArgs = malloc((cArgs + 1) * sizeof(papszArgs[0]));
+    if (papszArgs)
+        memcpy(papszArgs, papszArgsOriginal, (cArgs + 1) * sizeof(papszArgs[0]));
+    else
+        return errx(pCtx, 9, "out of memory!");
+
+    rcExit = quote_argv(cArgs, papszArgs, fWatcomBrainDamage, 0 /*fFreeOrLeak*/);
+    if (rcExit == 0)
+#endif
+    {
+        /*
+         * Display what we're about to execute if we're in verbose mode.
+         */
+        if (cVerbosity > 0)
+        {
+            for (i = 0; i < cArgs; i++)
+                warnx(pCtx, "debug: argv[%i]=%s<eos>", i, papszArgs[i]);
+            for (i = 0; i < (int)cOrders; i++)
+                switch (paOrders[i].enmOrder)
+                {
+                    case kRedirectOrder_Close:
+                        warnx(pCtx, "debug: close %d\n", paOrders[i].fdTarget);
+                        break;
+                    case kRedirectOrder_Dup:
+                        warnx(pCtx, "debug: dup %d to %d\n", paOrders[i].fdSource, paOrders[i].fdTarget);
+                        break;
+                    case kRedirectOrder_Open:
+                        warnx(pCtx, "debug: open '%s' (%#x) as [%d ->] %d\n",
+                              paOrders[i].pszFilename, paOrders[i].fOpen, paOrders[i].fdSource, paOrders[i].fdTarget);
+                        break;
+                    default:
+                        warnx(pCtx, "error! invalid enmOrder=%d", paOrders[i].enmOrder);
+                        assert(0);
+                        break;
+                }
+            if (pszSavedCwd)
+                warnx(pCtx, "debug: chdir %s\n", pszCwd);
+        }
+
+#ifndef KBUILD_OS_WINDOWS
+        /*
+         * Change working directory if so requested.
+         */
+        if (pszSavedCwd)
+        {
+            if (chdir(pszCwd) < 0)
+                rcExit = errx(pCtx, 10, "Failed to change directory to '%s'", pszCwd);
+        }
+#endif /* KBUILD_OS_WINDOWS */
+        if (rcExit == 0)
+        {
+# if !defined(USE_POSIX_SPAWN) && !defined(KBUILD_OS_WINDOWS)
+            /*
+             * Execute the file orders.
+             */
+            FILE *pWorkingStdErr = NULL;
+            rcExit = kRedirectExecFdOrders(pCtx, cOrders, paOrders, &pWorkingStdErr);
+            if (rcExit == 0)
+# endif
+            {
+# ifdef KMK
+                /*
+                 * We're spawning from within kmk.
+                 */
+# ifdef KBUILD_OS_WINDOWS
+                /* Windows is slightly complicated due to handles and winchildren.c. */
+                if (pPidSpawned)
+                    *pPidSpawned = 0;
+#  ifdef CONFIG_NEW_WIN_CHILDREN
+                if (pCtx->pvWorker && !pPidSpawned)
+                    rcExit = kRedirectExecProcessWithinOnWorker(pCtx, pszExecutable, cArgs, papszArgs, papszEnvVars,
+                                                                pszSavedCwd ? pszCwd : NULL, cOrders, paOrders,
+                                                                pfIsChildExitCode);
+                else
+#  endif
+                {
+                    HANDLE hProcess = INVALID_HANDLE_VALUE;
+                    rcExit = kRedirectCreateProcessWindows(pCtx, pszExecutable, cArgs, papszArgs, papszEnvVars,
+                                                           pszSavedCwd ? pszCwd : NULL, cOrders, paOrders, &hProcess);
+                    if (rcExit == 0)
+                        rcExit = kRedirectPostnatalCareOnWindows(pCtx, hProcess, cVerbosity, pPidSpawned, pfIsChildExitCode);
+                }
+
+# elif defined(KBUILD_OS_OS2)
+                *pPidSpawned = _spawnvpe(P_NOWAIT, pszExecutable, papszArgs, papszEnvVars);
+                kRedirectRestoreFdOrders(pCtx, cOrders, paOrders, &pWorkingStdErr);
+                if (*pPidSpawned != -1)
+                {
+                    if (cVerbosity > 0)
+                        warnx(pCtx, "debug: spawned %d", *pPidSpawned);
+                }
+                else
+                {
+                    rcExit = err(pCtx, 10, "_spawnvpe(%s) failed", pszExecutable);
+                    *pPidSpawned = 0;
+                }
+# else
+                rcExit = posix_spawnp(pPidSpawned, pszExecutable, pFileActions, NULL /*pAttr*/, papszArgs, papszEnvVars);
+                if (rcExit == 0)
+                {
+                    if (cVerbosity > 0)
+                        warnx(pCtx, "debug: spawned %d", *pPidSpawned);
+                }
+                else
+                {
+                    rcExit = errx(pCtx, 10, "posix_spawnp(%s) failed: %s", pszExecutable, strerror(rcExit));
+                    *pPidSpawned = 0;
+                }
+# endif
+
+#else  /* !KMK */
+                /*
+                 * Spawning from inside the kmk_redirect executable.
+                 */
+# ifdef KBUILD_OS_WINDOWS
+                HANDLE hProcess = INVALID_HANDLE_VALUE;
+                rcExit = kRedirectCreateProcessWindows(pCtx, pszExecutable, cArgs, papszArgs, papszEnvVars,
+                                                       pszSavedCwd ? pszCwd : NULL, cOrders, paOrders, &hProcess);
+                if (rcExit == 0)
+                {
+                    DWORD dwWait;
+                    do
+                        dwWait = WaitForSingleObject(hProcess, INFINITE);
+                    while (dwWait == WAIT_IO_COMPLETION || dwWait == WAIT_TIMEOUT);
+
+                    dwWait = 11;
+                    if (GetExitCodeProcess(hProcess, &dwWait))
+                    {
+                        *pfIsChildExitCode = K_TRUE;
+                        rcExit = dwWait;
+                    }
+                    else
+                        rcExit = errx(pCtx, 11, "GetExitCodeProcess(%s) failed: %u", pszExecutable, GetLastError());
+                }
+
+#elif defined(KBUILD_OS_OS2)
+                errno  = 0;
+                rcExit = (int)_spawnvpe(P_WAIT, pszExecutable, papszArgs, papszEnvVars);
+                kRedirectRestoreFdOrders(pCtx, cOrders, paOrders, &pWorkingStdErr);
+                if (rcExit != -1 || errno == 0)
+                {
+                    *pfIsChildExitCode = K_TRUE;
+                    if (cVerbosity > 0)
+                        warnx(pCtx, "debug: exit code: %d", rcExit);
+                }
+                else
+                    rcExit = err(pCtx, 10, "_spawnvpe(%s) failed", pszExecutable);
+
+# else
+                pid_t pidChild = 0;
+                rcExit = posix_spawnp(&pidChild, pszExecutable, pFileActions, NULL /*pAttr*/, papszArgs, papszEnvVars);
+                if (rcExit == 0)
+                {
+                    *pfIsChildExitCode = K_TRUE;
+                    if (cVerbosity > 0)
+                        warnx(pCtx, "debug: spawned %d", pidChild);
+
+                    /* Wait for the child. */
+                    for (;;)
+                    {
+                        int rcExitRaw = 1;
+                        pid_t pid = waitpid(pidChild, &rcExitRaw, 0 /*block*/);
+                        if (pid == pidChild)
+                        {
+                            rcExit = WIFEXITED(rcExitRaw) ? WEXITSTATUS(rcExitRaw) : 63;
+                            if (cVerbosity > 0)
+                                warnx(pCtx, "debug: %d exit code: %d (%d)", pidChild, rcExit, rcExitRaw);
+                            break;
+                        }
+                        if (   errno != EINTR
+#  ifdef ERESTART
+                            && errno != ERESTART
+#  endif
+                           )
+                        {
+                            rcExit = err(pCtx, 11, "waitpid failed");
+                            kill(pidChild, SIGKILL);
+                            break;
+                        }
+                    }
+                }
+                else
+                    rcExit = errx(pCtx, 10, "posix_spawnp(%s) failed: %s", pszExecutable, strerror(rcExit));
+# endif
+#endif /* !KMK */
+            }
+        }
+
+#ifndef KBUILD_OS_WINDOWS
+        /*
+         * Restore the current directory.
+         */
+        if (pszSavedCwd)
+        {
+            if (chdir(pszSavedCwd) < 0)
+                warn(pCtx, "Failed to restore directory to '%s'", pszSavedCwd);
+        }
+#endif
+    }
+#ifdef _MSC_VER
+    else
+        rcExit = errx(pCtx, 9, "quite_argv failed: %u", rcExit);
+
+    /* Restore the original argv strings, freeing the quote_argv replacements. */
+    i = cArgs;
+    while (i-- > 0)
+        if (papszArgs[i] != papszArgsOriginal[i])
+            free(papszArgs[i]);
+    free(papszArgs);
+#endif
+    return rcExit;
+}
+
+
+/**
+ * The function that does almost everything here... ugly.
+ */
+int kmk_builtin_redirect(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx, struct child *pChild, pid_t *pPidSpawned)
+{
+    int             rcExit = 0;
+    KBOOL           fChildExitCode = K_FALSE;
+#ifdef USE_POSIX_SPAWN
+    posix_spawn_file_actions_t FileActions;
+#endif
+    unsigned        cOrders = 0;
+    REDIRECTORDERS  aOrders[32];
+
+    int             iArg;
+    const char     *pszExecutable      = NULL;
+    char          **papszEnvVars       = NULL;
+    unsigned        cAllocatedEnvVars;
+    unsigned        cEnvVars;
+    int             fWatcomBrainDamage = 0;
+    int             cVerbosity         = 0;
+    char           *pszSavedCwd        = NULL;
+    size_t const    cbCwdBuf           = GET_PATH_MAX;
+    PATH_VAR(szCwd);
+#ifdef KBUILD_OS_OS2
+    ULONG           ulLibPath;
+    char           *apszSavedLibPaths[LIBPATHSTRICT + 1] = { NULL, NULL, NULL, NULL };
+#endif
+
+
+    if (argc <= 1)
+        return kmk_redirect_usage(pCtx, 1);
+
+    /*
+     * Create default program environment.
+     */
+#if defined(KMK) && defined(KBUILD_OS_WINDOWS)
+    if (getcwd_fs(szCwd, cbCwdBuf) != NULL)
+#else
+    if (getcwd(szCwd, cbCwdBuf) != NULL)
+#endif
+    { /* likely */ }
+    else
+        return err(pCtx, 9, "getcwd failed");
+
+    /* We start out with a read-only enviornment from kmk or the crt, and will
+       duplicate it if we make changes to it. */
+    cAllocatedEnvVars = 0;
+    papszEnvVars = envp;
+    cEnvVars = 0;
+    while (papszEnvVars[cEnvVars] != NULL)
+        cEnvVars++;
+
+#ifdef USE_POSIX_SPAWN
+    /*
+     * Init posix attributes with stdout/err redirections according to pCtx.
+     */
+    rcExit = posix_spawn_file_actions_init(&FileActions);
+    if (rcExit != 0)
+        rcExit = errx(pCtx, 9, "posix_spawn_file_actions_init failed: %s", strerror(rcExit));
+# if !defined(KMK_BUILTIN_STANDALONE) && !defined(CONFIG_WITH_OUTPUT_IN_MEMORY)
+    if (pCtx->pOut && rcExit == 0)
+    {
+        if (pCtx->pOut->out >= 0)
+        {
+            rcExit = posix_spawn_file_actions_adddup2(&FileActions, pCtx->pOut->out, 1);
+            if (rcExit != 0)
+                rcExit = errx(pCtx, 2, "posix_spawn_file_actions_addclose(%d, 1) failed: %s", pCtx->pOut->out, strerror(rcExit));
+        }
+        if (pCtx->pOut->err >= 0 && rcExit == 0)
+        {
+            rcExit = posix_spawn_file_actions_adddup2(&FileActions, pCtx->pOut->err, 2);
+            if (rcExit != 0)
+                rcExit = errx(pCtx, 2, "posix_spawn_file_actions_addclose(%d, 1) failed: %s", pCtx->pOut->err, strerror(rcExit));
+        }
+    }
+# endif
+#endif
+
+    /*
+     * Parse arguments.
+     */
+    for (iArg = 1; rcExit == 0 && iArg < argc; iArg++)
+    {
+        char *pszArg = argv[iArg];
+        if (*pszArg == '-')
+        {
+            int         fd;
+            char        chOpt;
+            const char *pszValue;
+
+            chOpt = *++pszArg;
+            pszArg++;
+            if (chOpt == '-')
+            {
+                /* '--' indicates where the bits to execute start.  Check if we're
+                   relaunching ourselves here and just continue parsing if we are. */
+                if (*pszArg == '\0')
+                {
+                    iArg++;
+                    if (    iArg >= argc
+                        || (   strcmp(argv[iArg], "kmk_builtin_redirect") != 0
+                            && strcmp(argv[iArg], argv[0]) != 0))
+                        break;
+                    continue;
+                }
+
+                if (   strcmp(pszArg, "wcc-brain-damage") == 0
+                    || strcmp(pszArg, "watcom-brain-damage") == 0)
+                {
+                    fWatcomBrainDamage = 1;
+                    continue;
+                }
+
+                /* convert to short. */
+                if (strcmp(pszArg, "help") == 0)
+                    chOpt = 'h';
+                else if (strcmp(pszArg, "version") == 0)
+                    chOpt = 'V';
+                else if (   strcmp(pszArg, "set") == 0
+                         || strcmp(pszArg, "env") == 0)
+                    chOpt = 'E';
+                else if (strcmp(pszArg, "append") == 0)
+                    chOpt = 'A';
+                else if (strcmp(pszArg, "prepend") == 0)
+                    chOpt = 'D';
+                else if (strcmp(pszArg, "unset") == 0)
+                    chOpt = 'U';
+                else if (   strcmp(pszArg, "zap-env") == 0
+                         || strcmp(pszArg, "ignore-environment") == 0 /* GNU env compatibility. */ )
+                    chOpt = 'Z';
+                else if (strcmp(pszArg, "chdir") == 0)
+                    chOpt = 'C';
+                else if (strcmp(pszArg, "close") == 0)
+                    chOpt = 'c';
+                else if (strcmp(pszArg, "verbose") == 0)
+                    chOpt = 'v';
+                else if (strcmp(pszArg, "stdin-pipe") == 0)
+                    chOpt = 'I';
+                else
+                {
+                    errx(pCtx, 2, "Unknown option: '%s'", pszArg - 2);
+                    rcExit = kmk_redirect_usage(pCtx, 1);
+                    break;
+                }
+                pszArg = "";
+            }
+
+            /*
+             * Deal with the obligatory help and version switches first to get them out of the way.
+             */
+            if (chOpt == 'h')
+            {
+                kmk_redirect_usage(pCtx, 0);
+                rcExit = -1;
+                break;
+            }
+            if (chOpt == 'V')
+            {
+                kbuild_version(argv[0]);
+                rcExit = -1;
+                break;
+            }
+
+            /*
+             * Get option value first, if the option takes one.
+             */
+            if (   chOpt == 'E'
+                || chOpt == 'A'
+                || chOpt == 'D'
+                || chOpt == 'U'
+                || chOpt == 'C'
+                || chOpt == 'c'
+                || chOpt == 'd'
+                || chOpt == 'e')
+            {
+                if (*pszArg != '\0')
+                    pszValue = pszArg + (*pszArg == ':' || *pszArg == '=');
+                else if (++iArg < argc)
+                    pszValue = argv[iArg];
+                else
+                {
+                    errx(pCtx, 2, "syntax error: Option -%c requires a value!", chOpt);
+                    rcExit = kmk_redirect_usage(pCtx, 1);
+                    break;
+                }
+            }
+            else
+                pszValue = NULL;
+
+            /*
+             * Environment switch?
+             */
+            if (chOpt == 'E')
+            {
+                const char *pchEqual = strchr(pszValue, '=');
+#ifdef KBUILD_OS_OS2
+                if (   strncmp(pszValue, TUPLE("BEGINLIBPATH=")) == 0
+                    || strncmp(pszValue, TUPLE("ENDLIBPATH=")) == 0
+                    || strncmp(pszValue, TUPLE("LIBPATHSTRICT=")) == 0)
+                {
+                    ULONG   ulVar  = *pszValue == 'B' ? BEGIN_LIBPATH
+                                   : *pszValue == 'E' ? END_LIBPATH
+                                   :                    LIBPATHSTRICT;
+                    APIRET  rc;
+                    if (apszSavedLibPaths[ulVar] == NULL)
+                    {
+                        /* The max length is supposed to be 1024 bytes. */
+                        apszSavedLibPaths[ulVar] = calloc(1024, 2);
+                        if (apszSavedLibPaths[ulVar])
+                        {
+                            rc = DosQueryExtLIBPATH(apszSavedLibPaths[ulVar], ulVar);
+                            if (rc)
+                            {
+                                rcExit = errx(pCtx, 9, "DosQueryExtLIBPATH(,%u) failed: %lu", ulVar, rc);
+                                free(apszSavedLibPaths[ulVar]);
+                                apszSavedLibPaths[ulVar] = NULL;
+                            }
+                        }
+                        else
+                            rcExit = errx(pCtx, 9, "out of memory!");
+                    }
+                    if (rcExit == 0)
+                    {
+                        rc = DosSetExtLIBPATH(pchEqual + 1, ulVar);
+                        if (rc)
+                            rcExit = errx(pCtx, 9, "error: DosSetExtLibPath(\"%s\", %.*s (%lu)): %lu",
+                                          pchEqual, pchEqual - pszValue, pchEqual + 1, ulVar, rc);
+                    }
+                    continue;
+                }
+#endif /* KBUILD_OS_OS2 */
+
+                /* We differ from kSubmit here and use putenv sematics. */
+                if (pchEqual)
+                {
+                    if (pchEqual[1] != '\0')
+                        rcExit = kBuiltinOptEnvSet(pCtx, &papszEnvVars, &cEnvVars, &cAllocatedEnvVars, cVerbosity, pszValue);
+                    else
+                    {
+                        char *pszCopy = strdup(pszValue);
+                        if (pszCopy)
+                        {
+                            pszCopy[pchEqual - pszValue] = '\0';
+                            rcExit = kBuiltinOptEnvUnset(pCtx, &papszEnvVars, &cEnvVars, &cAllocatedEnvVars, cVerbosity, pszCopy);
+                            free(pszCopy);
+                        }
+                        else
+                            rcExit = errx(pCtx, 1, "out of memory!");
+                    }
+                    continue;
+                }
+                /* Simple unset. */
+                chOpt = 'U';
+            }
+
+            /*
+             * Append or prepend value to and environment variable.
+             */
+            if (chOpt == 'A' || chOpt == 'D')
+            {
+#ifdef KBUILD_OS_OS2
+                if (   strcmp(pszValue, "BEGINLIBPATH") == 0
+                    || strcmp(pszValue, "ENDLIBPATH") == 0
+                    || strcmp(pszValue, "LIBPATHSTRICT") == 0)
+                    rcExit = errx(pCtx, 2, "error: '%s' cannot currently be appended or prepended to. Please use -E/--set for now.", pszValue);
+                else
+#endif
+                if (chOpt == 'A')
+                    rcExit = kBuiltinOptEnvAppend(pCtx, &papszEnvVars, &cEnvVars, &cAllocatedEnvVars, cVerbosity, pszValue);
+                else
+                    rcExit = kBuiltinOptEnvPrepend(pCtx, &papszEnvVars, &cEnvVars, &cAllocatedEnvVars, cVerbosity, pszValue);
+                continue;
+            }
+
+            /*
+             * Unset environment variable.
+             */
+            if (chOpt == 'U')
+            {
+#ifdef KBUILD_OS_OS2
+                if (   strcmp(pszValue, "BEGINLIBPATH") == 0
+                    || strcmp(pszValue, "ENDLIBPATH") == 0
+                    || strcmp(pszValue, "LIBPATHSTRICT") == 0)
+                    rcExit = errx(pCtx, 2, "error: '%s' cannot be unset, only set to an empty value using -E/--set.", pszValue);
+                else
+#endif
+                    rcExit = kBuiltinOptEnvUnset(pCtx, &papszEnvVars, &cEnvVars, &cAllocatedEnvVars, cVerbosity, pszValue);
+                continue;
+            }
+
+            /*
+             * Zap environment switch?
+             */
+            if (chOpt == 'Z') /* (no -i option here, as it's reserved for stdin) */
+            {
+                rcExit = kBuiltinOptEnvZap(pCtx, &papszEnvVars, &cEnvVars, &cAllocatedEnvVars, cVerbosity);
+                continue;
+            }
+
+            /*
+             * Change directory switch?
+             */
+            if (chOpt == 'C')
+            {
+                if (pszSavedCwd == NULL)
+                    pszSavedCwd = strdup(szCwd);
+                if (pszSavedCwd)
+                    rcExit = kBuiltinOptChDir(pCtx, szCwd, cbCwdBuf, pszValue);
+                else
+                    rcExit = err(pCtx, 9, "out of memory!");
+                continue;
+            }
+
+
+            /*
+             * Verbose operation switch?
+             */
+            if (chOpt == 'v')
+            {
+                cVerbosity++;
+                continue;
+            }
+
+            /*
+             * Executable image other than the first argument following '--'.
+             */
+            if (chOpt == 'e')
+            {
+                pszExecutable = pszValue;
+                continue;
+            }
+
+            /*
+             * Okay, it is some file descriptor operation.  Make sure we've got room for it.
+             */
+            if (cOrders + 1 < K_ELEMENTS(aOrders))
+            {
+                aOrders[cOrders].fdTarget         = -1;
+                aOrders[cOrders].fdSource         = -1;
+                aOrders[cOrders].fOpen            = 0;
+                aOrders[cOrders].fRemoveOnFailure = 0;
+                aOrders[cOrders].pszFilename      = NULL;
+                aOrders[cOrders].fdOtherPipeEnd   = -1;
+#ifndef USE_POSIX_SPAWN
+                aOrders[cOrders].fdSaved          = -1;
+#endif
+            }
+            else
+            {
+                rcExit = errx(pCtx, 2, "error: too many file actions (max: %d)", K_ELEMENTS(aOrders));
+                break;
+            }
+
+            if (chOpt == 'c')
+            {
+                /*
+                 * Close the specified file descriptor (no stderr/out/in aliases).
+                 */
+                char *pszTmp;
+                fd = (int)strtol(pszValue, &pszTmp, 0);
+                if (pszTmp == pszValue || *pszTmp != '\0')
+                    rcExit = errx(pCtx, 2, "error: failed to convert '%s' to a number", pszValue);
+                else if (fd < 0)
+                    rcExit = errx(pCtx, 2, "error: negative fd %d (%s)", fd, pszValue);
+#ifdef ONLY_TARGET_STANDARD_HANDLES
+                else if (fd > 2)
+                    rcExit = errx(pCtx, 2, "error: %d is not a standard descriptor number", fd);
+#endif
+                else
+                {
+                    aOrders[cOrders].enmOrder = kRedirectOrder_Close;
+                    aOrders[cOrders].fdTarget = fd;
+                    cOrders++;
+#ifdef USE_POSIX_SPAWN
+                    rcExit = posix_spawn_file_actions_addclose(&FileActions, fd);
+                    if (rcExit != 0)
+                        rcExit = errx(pCtx, 2, "posix_spawn_file_actions_addclose(%d) failed: %s", fd, strerror(rcExit));
+#endif
+                }
+            }
+            else if (chOpt == 'd')
+            {
+                /*
+                 * Duplicate file handle.  Value is fdTarget=fdSource
+                 */
+                char *pszEqual;
+                fd = (int)strtol(pszValue, &pszEqual, 0);
+                if (pszEqual == pszValue)
+                    rcExit = errx(pCtx, 2, "error: failed to convert target descriptor of '-d %s' to a number", pszValue);
+                else if (fd < 0)
+                    rcExit = errx(pCtx, 2, "error: negative target descriptor %d ('-d %s')", fd, pszValue);
+#ifdef ONLY_TARGET_STANDARD_HANDLES
+                else if (fd > 2)
+                    rcExit = errx(pCtx, 2, "error: target %d is not a standard descriptor number", fd);
+#endif
+                else if (*pszEqual != '=')
+                    rcExit = errx(pCtx, 2, "syntax error: expected '=' to follow target descriptor: '-d %s'", pszValue);
+                else
+                {
+                    char *pszEnd;
+                    int fdSource = (int)strtol(++pszEqual, &pszEnd, 0);
+                    if (pszEnd == pszEqual || *pszEnd != '\0')
+                        rcExit = errx(pCtx, 2, "error: failed to convert source descriptor of '-d %s' to a number", pszValue);
+                    else if (fdSource < 0)
+                        rcExit = errx(pCtx, 2, "error: negative source descriptor %d ('-d %s')", fdSource, pszValue);
+                    else
+                    {
+                        aOrders[cOrders].enmOrder = kRedirectOrder_Dup;
+                        aOrders[cOrders].fdTarget = fd;
+                        aOrders[cOrders].fdSource = fdSource;
+                        cOrders++;
+#ifdef USE_POSIX_SPAWN
+                        rcExit = posix_spawn_file_actions_adddup2(&FileActions, fdSource, fd);
+                        if (rcExit != 0)
+                            rcExit = errx(pCtx, 2, "posix_spawn_file_actions_adddup2(%d) failed: %s",
+                                          fdSource, fd, strerror(rcExit));
+#endif
+                    }
+                }
+            }
+            else if (chOpt == 'I')
+            {
+                /*
+                 * Replace stdin with the read end of an anonymous pipe.
+                 */
+                int aFds[2] = { -1, -1 };
+                rcExit = kRedirectCreateStdInPipeWithoutConflict(pCtx, aFds, cOrders, aOrders,  0 /*fdTarget*/);
+                if (rcExit == 0)
+                {
+                    aOrders[cOrders].enmOrder       = kRedirectOrder_Dup;
+                    aOrders[cOrders].fdTarget       = 0;
+                    aOrders[cOrders].fdSource       = aFds[0];
+                    aOrders[cOrders].fdOtherPipeEnd = aFds[1];
+                    cOrders++;
+#ifdef USE_POSIX_SPAWN
+                    rcExit = posix_spawn_file_actions_adddup2(&FileActions, aFds[0], 0);
+                    if (rcExit != 0)
+                        rcExit = errx(pCtx, 2, "posix_spawn_file_actions_adddup2(0) failed: %s", strerror(rcExit));
+#endif
+                }
+            }
+            else
+            {
+                /*
+                 * Open file as a given file descriptor.
+                 */
+                int fdOpened;
+                int fOpen;
+
+                /* mode */
+                switch (chOpt)
+                {
+                    case 'r':
+                        chOpt = *pszArg++;
+                        if (chOpt == '+')
+                        {
+                            fOpen = O_RDWR;
+                            chOpt = *pszArg++;
+                        }
+                        else
+                            fOpen = O_RDONLY;
+                        break;
+
+                    case 'w':
+                        chOpt = *pszArg++;
+                        if (chOpt == '+')
+                        {
+                            fOpen = O_RDWR | O_CREAT | O_TRUNC;
+                            chOpt = *pszArg++;
+                        }
+                        else
+                            fOpen = O_WRONLY | O_CREAT | O_TRUNC;
+                        aOrders[cOrders].fRemoveOnFailure = 1;
+                        break;
+
+                    case 'a':
+                        chOpt = *pszArg++;
+                        if (chOpt == '+')
+                        {
+                            fOpen = O_RDWR | O_CREAT | O_APPEND;
+                            chOpt = *pszArg++;
+                        }
+                        else
+                            fOpen = O_WRONLY | O_CREAT | O_APPEND;
+                        break;
+
+                    case 'i': /* make sure stdin is read-only. */
+                        fOpen = O_RDONLY;
+                        break;
+
+                    case '+':
+                        rcExit = errx(pCtx, 2, "syntax error: Unexpected '+' in '%s'", argv[iArg]);
+                        continue;
+
+                    default:
+                        fOpen = O_RDWR | O_CREAT | O_TRUNC;
+                        aOrders[cOrders].fRemoveOnFailure = 1;
+                        break;
+                }
+
+                /* binary / text modifiers */
+                switch (chOpt)
+                {
+                    case 'b':
+                        chOpt = *pszArg++;
+                    default:
+#ifdef O_BINARY
+                        fOpen |= O_BINARY;
+#elif defined(_O_BINARY)
+                        fOpen |= _O_BINARY;
+#endif
+                        break;
+
+                    case 't':
+#ifdef O_TEXT
+                        fOpen |= O_TEXT;
+#elif defined(_O_TEXT)
+                        fOpen |= _O_TEXT;
+#endif
+                        chOpt = *pszArg++;
+                        break;
+
+                }
+
+                /* convert to file descriptor number */
+                switch (chOpt)
+                {
+                    case 'i':
+                        fd = 0;
+                        break;
+
+                    case 'o':
+                        fd = 1;
+                        break;
+
+                    case 'e':
+                        fd = 2;
+                        break;
+
+                    case '0':
+                        if (*pszArg == '\0')
+                        {
+                            fd = 0;
+                            break;
+                        }
+                        /* fall thru */
+                    case '1':
+                    case '2':
+                    case '3':
+                    case '4':
+                    case '5':
+                    case '6':
+                    case '7':
+                    case '8':
+                    case '9':
+                        pszValue = pszArg - 1;
+                        fd = (int)strtol(pszValue, &pszArg, 0);
+                        if (pszArg == pszValue)
+                            rcExit = errx(pCtx, 2, "error: failed to convert '%s' to a number", argv[iArg]);
+                        else if (fd < 0)
+                            rcExit = errx(pCtx, 2, "error: negative fd %d (%s)", fd, argv[iArg]);
+#ifdef ONLY_TARGET_STANDARD_HANDLES
+                        else if (fd > 2)
+                            rcExit = errx(pCtx, 2, "error: %d is not a standard descriptor number", fd);
+#endif
+                        else
+                            break;
+                        continue;
+
+                    /*
+                     * Invalid argument.
+                     */
+                    default:
+                        rcExit = errx(pCtx, 2, "error: failed to convert '%s' ('%s') to a file descriptor", pszArg, argv[iArg]);
+                        continue;
+                }
+
+                /*
+                 * Check for the filename.
+                 */
+                if (*pszArg != '\0')
+                {
+                    if (*pszArg != ':' && *pszArg != '=')
+                    {
+                        rcExit = errx(pCtx, 2, "syntax error: characters following the file descriptor: '%s' ('%s')",
+                                      pszArg, argv[iArg]);
+                        break;
+                    }
+                    pszArg++;
+                }
+                else if (++iArg < argc)
+                    pszArg = argv[iArg];
+                else
+                {
+                    rcExit = errx(pCtx, 2, "syntax error: missing filename argument.");
+                    break;
+                }
+
+                /*
+                 * Open the file.  We could've used posix_spawn_file_actions_addopen here,
+                 * but that means complicated error reporting.  So, since we need to do
+                 * this for windows anyway, just do it the same way everywhere.
+                 */
+                fdOpened = kRedirectOpenWithoutConflict(pCtx, pszArg, fOpen, 0666, cOrders, aOrders,
+                                                        aOrders[cOrders].fRemoveOnFailure, fd);
+                if (fdOpened >= 0)
+                {
+                    aOrders[cOrders].enmOrder    = kRedirectOrder_Open;
+                    aOrders[cOrders].fdTarget    = fd;
+                    aOrders[cOrders].fdSource    = fdOpened;
+                    aOrders[cOrders].fOpen       = fOpen;
+                    aOrders[cOrders].pszFilename = pszArg;
+                    cOrders++;
+
+#ifdef USE_POSIX_SPAWN
+                    if (fdOpened != fd)
+                    {
+                        rcExit = posix_spawn_file_actions_adddup2(&FileActions, fdOpened, fd);
+                        if (rcExit != 0)
+                            rcExit = err(pCtx, 9, "posix_spawn_file_actions_adddup2(,%d [%s], %d) failed: %s",
+                                         fdOpened, fd, pszArg, strerror(rcExit));
+                    }
+#endif
+                }
+                else
+                    rcExit = 9;
+            }
+        }
+        else
+        {
+            errx(pCtx, 2, "syntax error: Invalid argument '%s'.", argv[iArg]);
+            rcExit = kmk_redirect_usage(pCtx, 1);
+        }
+    }
+    if (!pszExecutable)
+        pszExecutable = argv[iArg];
+
+    /*
+     * Make sure there's something to execute.
+     */
+    if (rcExit == 0 && iArg < argc)
+    {
+        /*
+         * Do the spawning in a separate function (main is far to large as it is by now).
+         */
+        rcExit = kRedirectDoSpawn(pCtx, pszExecutable, argc - iArg, &argv[iArg], fWatcomBrainDamage,
+                                  papszEnvVars,
+                                  szCwd, pszSavedCwd,
+#ifdef USE_POSIX_SPAWN
+                                  cOrders, aOrders, &FileActions, cVerbosity,
+#else
+                                  cOrders, aOrders, cVerbosity,
+#endif
+#ifdef KMK
+                                  pPidSpawned,
+#endif
+                                  &fChildExitCode);
+    }
+    else if (rcExit == 0)
+    {
+        errx(pCtx, 2, "syntax error: nothing to execute!");
+        rcExit = kmk_redirect_usage(pCtx, 1);
+    }
+    /* Help and version sets rcExit to -1. Change it to zero. */
+    else if (rcExit == -1)
+        rcExit = 0;
+
+    /*
+     * Cleanup.
+     */
+    kBuiltinOptEnvCleanup(&papszEnvVars, cEnvVars, &cAllocatedEnvVars);
+    if (pszSavedCwd)
+        free(pszSavedCwd);
+    kRedirectCleanupFdOrders(cOrders, aOrders, rcExit != 0 && !fChildExitCode);
+#ifdef USE_POSIX_SPAWN
+    posix_spawn_file_actions_destroy(&FileActions);
+#endif
+#ifdef KBUILD_OS_OS2
+    for (ulLibPath = 0; ulLibPath < K_ELEMENTS(apszSavedLibPaths); ulLibPath++)
+        if (apszSavedLibPaths[ulLibPath] != NULL)
+        {
+            APIRET rc = DosSetExtLIBPATH(apszSavedLibPaths[ulLibPath], ulLibPath);
+            if (rc != 0)
+                warnx(pCtx, "DosSetExtLIBPATH('%s',%u) failed with %u when restoring the original values!",
+                      apszSavedLibPaths[ulLibPath], ulLibPath, rc);
+            free(apszSavedLibPaths[ulLibPath]);
+        }
+#endif
+
+    return rcExit;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_redirect", NULL };
+    return kmk_builtin_redirect(argc, argv, envp, &Ctx, NULL, NULL);
+}
+#endif
+
+
diff --git a/src/kmk/kmkbuiltin/rm.c b/src/kmk/kmkbuiltin/rm.c
new file mode 100644
index 0000000..5753b3e
--- /dev/null
+++ b/src/kmk/kmkbuiltin/rm.c
@@ -0,0 +1,844 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static const char copyright[] =
+"@(#) Copyright (c) 1990, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)rm.c	8.5 (Berkeley) 4/18/94";
+#endif /* not lint */
+#include <sys/cdefs.h>
+/*__FBSDID("$FreeBSD: src/bin/rm/rm.c,v 1.47 2004/04/06 20:06:50 markm Exp $");*/
+#endif
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define FAKES_NO_GETOPT_H /* bird */
+#include "config.h"
+#include <sys/stat.h>
+#if !defined(_MSC_VER) && !defined(__HAIKU__)
+# include <sys/param.h>
+# ifndef __gnu_hurd__
+#  include <sys/mount.h>
+# endif
+#endif
+
+#include "err.h"
+#include <errno.h>
+#include <fcntl.h>
+#include "fts.h"
+#include <grp.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifndef __HAIKU__
+# include <sysexits.h>
+#endif
+#include <unistd.h>
+#include <ctype.h>
+#include "getopt_r.h"
+#ifdef __HAIKU__
+# include "haikufakes.h"
+#endif
+#ifdef __NetBSD__
+# include <util.h>
+# define fflagstostr(flags)    	flags_to_string(flags, "")
+#endif
+#ifdef KBUILD_OS_WINDOWS
+# ifdef _MSC_VER
+#  include "mscfakes.h"
+# endif
+# include "nt/ntunlink.h"
+  /* Use the special unlink implementation to do rmdir too. */
+# undef  rmdir
+# define rmdir(a_pszPath) 	birdUnlinkForced(a_pszPath)
+#endif
+#if defined(__OS2__) || defined(_MSC_VER)
+# include <direct.h>
+# include <limits.h>
+#endif
+#include "kmkbuiltin.h"
+#include "kbuild_protection.h"
+#include "k/kDefs.h"	/* for K_OS */
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+#if defined(__EMX__) || defined(KBUILD_OS_WINDOWS)
+# define IS_SLASH(ch)   ( (ch) == '/' || (ch) == '\\' )
+# define HAVE_DOS_PATHS 1
+# define DEFAULT_PROTECTION_DEPTH 1
+#else
+# define IS_SLASH(ch)   ( (ch) == '/' )
+# undef HAVE_DOS_PATHS
+# define DEFAULT_PROTECTION_DEPTH 2
+#endif
+
+#ifdef __EMX__
+#undef S_IFWHT
+#undef S_ISWHT
+#endif
+#ifndef S_IFWHT
+#define S_IFWHT 0
+#define S_ISWHT(s) 0
+#define undelete(s) (-1)
+#endif
+
+#if 1
+#define CUR_LINE_H2(x)  "[line " #x "]"
+#define CUR_LINE_H1(x)  CUR_LINE_H2(x)
+#define CUR_LINE()      CUR_LINE_H1(__LINE__)
+#else
+# define CUR_LINE()
+#endif
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct RMINSTANCE
+{
+    PKMKBUILTINCTX pCtx;
+    int dflag, eval, fflag, iflag, Pflag, vflag, Wflag, stdin_ok;
+#ifdef KBUILD_OS_WINDOWS
+    int fUseNtDeleteFile;
+#endif
+    uid_t uid;
+    KBUILDPROTECTION g_ProtData;
+} RMINSTANCE;
+typedef RMINSTANCE *PRMINSTANCE;
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static struct option long_options[] =
+{
+    { "help",   					no_argument, 0, 261 },
+    { "version",   					no_argument, 0, 262 },
+    { "disable-protection",				no_argument, 0, 263 },
+    { "enable-protection",				no_argument, 0, 264 },
+    { "enable-full-protection",				no_argument, 0, 265 },
+    { "disable-full-protection",			no_argument, 0, 266 },
+    { "protection-depth",				required_argument, 0, 267 },
+#ifdef KBUILD_OS_WINDOWS
+    { "nt-delete-file",					no_argument, 0, 268 },
+#endif
+    { 0, 0,	0, 0 },
+};
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+extern void bsd_strmode(mode_t mode, char *p); /* strmode.c */
+
+static int	check(PRMINSTANCE, char *, char *, struct stat *);
+static void	checkdot(PRMINSTANCE, char **);
+static int	rm_file(PRMINSTANCE, char **);
+static int	rm_overwrite(PRMINSTANCE, char *, struct stat *);
+static int	rm_tree(PRMINSTANCE, char **);
+static int	usage(PKMKBUILTINCTX, int);
+
+
+
+/*
+ * rm --
+ *	This rm is different from historic rm's, but is expected to match
+ *	POSIX 1003.2 behavior.  The most visible difference is that -f
+ *	has two specific effects now, ignore non-existent files and force
+ * 	file removal.
+ */
+int
+kmk_builtin_rm(int argc, char *argv[], char **envp, PKMKBUILTINCTX pCtx)
+{
+	RMINSTANCE This;
+	struct getopt_state_r gos;
+	int ch, rflag;
+
+	/* Init global instance data */
+	This.pCtx = pCtx;
+	This.dflag = 0;
+	This.eval = 0;
+	This.fflag = 0;
+	This.iflag = 0;
+	This.Pflag = 0;
+	This.vflag = 0;
+	This.Wflag = 0;
+	This.stdin_ok = 0;
+#ifdef KBUILD_OS_WINDOWS
+	This.fUseNtDeleteFile = 0;
+#endif
+	This.uid = 0;
+	kBuildProtectionInit(&This.g_ProtData, pCtx);
+
+	rflag = 0;
+	getopt_initialize_r(&gos, argc, argv, "dfiPRvW", long_options, envp, pCtx);
+	while ((ch = getopt_long_r(&gos, NULL)) != -1)
+		switch (ch) {
+		case 'd':
+			This.dflag = 1;
+			break;
+		case 'f':
+			This.fflag = 1;
+			This.iflag = 0;
+			break;
+		case 'i':
+			This.fflag = 0;
+			This.iflag = 1;
+			break;
+		case 'P':
+			This.Pflag = 1;
+			break;
+		case 'R':
+#if 0
+		case 'r':			/* Compatibility. */
+#endif
+			rflag = 1;
+			break;
+		case 'v':
+			This.vflag = 1;
+			break;
+#ifdef FTS_WHITEOUT
+		case 'W':
+			This.Wflag = 1;
+			break;
+#endif
+		case 261:
+			kBuildProtectionTerm(&This.g_ProtData);
+			usage(pCtx, 0);
+			return 0;
+		case 262:
+			kBuildProtectionTerm(&This.g_ProtData);
+			return kbuild_version(argv[0]);
+		case 263:
+			kBuildProtectionDisable(&This.g_ProtData, KBUILDPROTECTIONTYPE_RECURSIVE);
+			break;
+		case 264:
+			kBuildProtectionEnable(&This.g_ProtData, KBUILDPROTECTIONTYPE_RECURSIVE);
+			break;
+		case 265:
+			kBuildProtectionEnable(&This.g_ProtData, KBUILDPROTECTIONTYPE_FULL);
+			break;
+		case 266:
+			kBuildProtectionDisable(&This.g_ProtData, KBUILDPROTECTIONTYPE_FULL);
+			break;
+		case 267:
+			if (kBuildProtectionSetDepth(&This.g_ProtData, gos.optarg)) {
+			    kBuildProtectionTerm(&This.g_ProtData);
+			    return 1;
+			}
+			break;
+#ifdef KBUILD_OS_WINDOWS
+		case 268:
+			This.fUseNtDeleteFile = 1;
+			break;
+#endif
+		case '?':
+		default:
+			kBuildProtectionTerm(&This.g_ProtData);
+			return usage(pCtx, 1);
+		}
+	argc -= gos.optind;
+	argv += gos.optind;
+
+	if (argc < 1) {
+		kBuildProtectionTerm(&This.g_ProtData);
+		if (This.fflag)
+			return (0);
+		return usage(pCtx, 1);
+	}
+
+	if (!kBuildProtectionScanEnv(&This.g_ProtData, envp, "KMK_RM_")) {
+		checkdot(&This, argv);
+		This.uid = geteuid();
+
+		if (*argv) {
+			This.stdin_ok = isatty(STDIN_FILENO);
+			if (rflag)
+				This.eval |= rm_tree(&This, argv);
+			else
+				This.eval |= rm_file(&This, argv);
+		}
+	} else {
+		This.eval = 1;
+	}
+
+	kBuildProtectionTerm(&This.g_ProtData);
+	return This.eval;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+	KMKBUILTINCTX Ctx = { "kmk_rm", NULL };
+	return kmk_builtin_rm(argc, argv, envp, &Ctx);
+}
+#endif
+
+static int
+rm_tree(PRMINSTANCE pThis, char **argv)
+{
+	FTS *fts;
+	FTSENT *p;
+	int needstat;
+	int flags;
+	int rval;
+
+	/*
+	 * Check up front before anything is deleted. This will not catch
+	 * everything, but we'll check the individual items later.
+	 */
+	int i;
+	for (i = 0; argv[i]; i++) {
+		if (kBuildProtectionEnforce(&pThis->g_ProtData, KBUILDPROTECTIONTYPE_RECURSIVE, argv[i])) {
+			return 1;
+		}
+	}
+
+	/*
+	 * Remove a file hierarchy.  If forcing removal (-f), or interactive
+	 * (-i) or can't ask anyway (stdin_ok), don't stat the file.
+	 */
+	needstat = !pThis->uid || (!pThis->fflag && !pThis->iflag && pThis->stdin_ok);
+
+	/*
+	 * If the -i option is specified, the user can skip on the pre-order
+	 * visit.  The fts_number field flags skipped directories.
+	 */
+#define	SKIPPED	1
+
+	flags = FTS_PHYSICAL;
+#ifndef KMK_BUILTIN_STANDALONE
+	flags |= FTS_NOCHDIR; /* Must not change the directory from inside kmk! */
+#endif
+	if (!needstat)
+		flags |= FTS_NOSTAT;
+#ifdef FTS_WHITEOUT
+	if (pThis->Wflag)
+		flags |= FTS_WHITEOUT;
+#endif
+	if (!(fts = fts_open(argv, flags, NULL))) {
+		return err(pThis->pCtx, 1, "fts_open");
+	}
+	while ((p = fts_read(fts)) != NULL) {
+		const char *operation = "chflags";
+		switch (p->fts_info) {
+		case FTS_DNR:
+			if (!pThis->fflag || p->fts_errno != ENOENT)
+				pThis->eval = errx(pThis->pCtx, 1, "fts: %s: %s" CUR_LINE() "\n",
+						   p->fts_path, strerror(p->fts_errno));
+			continue;
+		case FTS_ERR:
+			fts_close(fts);
+			return errx(pThis->pCtx, 1, "fts: %s: %s " CUR_LINE(), p->fts_path, strerror(p->fts_errno));
+		case FTS_NS:
+			/*
+			 * Assume that since fts_read() couldn't stat the
+			 * file, it can't be unlinked.
+			 */
+			if (!needstat)
+				break;
+			if (!pThis->fflag || p->fts_errno != ENOENT)
+				pThis->eval = errx(pThis->pCtx, 1, "fts: %s: %s " CUR_LINE() "\n",
+						   p->fts_path, strerror(p->fts_errno));
+			continue;
+		case FTS_D:
+			/* Pre-order: give user chance to skip. */
+			if (!pThis->fflag && !check(pThis, p->fts_path, p->fts_accpath, p->fts_statp)) {
+				(void)fts_set(fts, p, FTS_SKIP);
+				p->fts_number = SKIPPED;
+			}
+#ifdef UF_APPEND
+			else if (!pThis->uid &&
+				 (p->fts_statp->st_flags & (UF_APPEND|UF_IMMUTABLE)) &&
+				 !(p->fts_statp->st_flags & (SF_APPEND|SF_IMMUTABLE)) &&
+				 chflags(p->fts_accpath,
+					 p->fts_statp->st_flags &= ~(UF_APPEND|UF_IMMUTABLE)) < 0)
+				goto err;
+#endif
+			continue;
+		case FTS_DP:
+			/* Post-order: see if user skipped. */
+			if (p->fts_number == SKIPPED)
+				continue;
+			break;
+		default:
+			if (!pThis->fflag && !check(pThis, p->fts_path, p->fts_accpath, p->fts_statp))
+				continue;
+		}
+
+		/*
+		 * Protect against deleting root files and directories.
+		 */
+		if (kBuildProtectionEnforce(&pThis->g_ProtData, KBUILDPROTECTIONTYPE_RECURSIVE, p->fts_accpath)) {
+			fts_close(fts);
+			return 1;
+		}
+
+		rval = 0;
+#ifdef UF_APPEND
+		if (!pThis->uid &&
+		    (p->fts_statp->st_flags & (UF_APPEND|UF_IMMUTABLE)) &&
+		    !(p->fts_statp->st_flags & (SF_APPEND|SF_IMMUTABLE)))
+			rval = chflags(p->fts_accpath,
+				       p->fts_statp->st_flags &= ~(UF_APPEND|UF_IMMUTABLE));
+#endif
+		if (rval == 0) {
+			/*
+			 * If we can't read or search the directory, may still be
+			 * able to remove it.  Don't print out the un{read,search}able
+			 * message unless the remove fails.
+			 */
+			switch (p->fts_info) {
+			case FTS_DP:
+			case FTS_DNR:
+#ifdef KBUILD_OS_WINDOWS
+				if (p->fts_parent->fts_dirfd != NT_FTS_INVALID_HANDLE_VALUE) {
+				    rval = birdUnlinkForcedEx(p->fts_parent->fts_dirfd, p->fts_name);
+				} else {
+				    rval = birdUnlinkForced(p->fts_accpath);
+				}
+#else
+				rval = rmdir(p->fts_accpath);
+#endif
+				if (rval == 0 || (pThis->fflag && errno == ENOENT)) {
+					if (rval == 0 && pThis->vflag)
+						kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s\n", p->fts_path);
+#if defined(KMK) && defined(KBUILD_OS_WINDOWS)
+					if (rval == 0) {
+					    extern int dir_cache_deleted_directory(const char *pszDir);
+					    dir_cache_deleted_directory(p->fts_accpath);
+					}
+#endif
+					continue;
+				}
+				operation = "rmdir";
+				break;
+
+#ifdef FTS_W
+			case FTS_W:
+				rval = undelete(p->fts_accpath);
+				if (rval == 0 && (pThis->fflag && errno == ENOENT)) {
+					if (pThis->vflag)
+						kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s\n", p->fts_path);
+					continue;
+				}
+				operation = "undelete";
+				break;
+#endif
+
+			case FTS_NS:
+				/*
+				 * Assume that since fts_read() couldn't stat
+				 * the file, it can't be unlinked.
+				 */
+				if (pThis->fflag)
+					continue;
+				/* FALLTHROUGH */
+			default:
+				if (pThis->Pflag)
+					if (!rm_overwrite(pThis, p->fts_accpath, NULL))
+						continue;
+#ifdef KBUILD_OS_WINDOWS
+				if (p->fts_parent->fts_dirfd != NT_FTS_INVALID_HANDLE_VALUE) {
+					if (p->fts_info != FTS_SL && p->fts_info != FTS_SLNONE) {
+						rval = birdUnlinkForcedFastEx(p->fts_parent->fts_dirfd, p->fts_name);
+					} else { /* NtDeleteFile doesn't work on directory links, so slow symlink deletion: */
+						rval = birdUnlinkForcedEx(p->fts_parent->fts_dirfd, p->fts_name);
+					}
+				} else {
+					if (p->fts_info != FTS_SL && p->fts_info != FTS_SLNONE) {
+						rval = birdUnlinkForcedFast(p->fts_accpath);
+					} else { /* NtDeleteFile doesn't work on directory links, so slow symlink deletion: */
+						rval = birdUnlinkForced(p->fts_accpath);
+					}
+				}
+#else
+				rval = unlink(p->fts_accpath);
+#endif
+
+				if (rval == 0 || (pThis->fflag && errno == ENOENT)) {
+					if (rval == 0 && pThis->vflag)
+						kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s\n", p->fts_path);
+					continue;
+				}
+				operation = "unlink";
+				break;
+			}
+		}
+#ifdef UF_APPEND
+err:
+#endif
+		pThis->eval = errx(pThis->pCtx, 1, "%s: %s failed: %s " CUR_LINE() "\n", p->fts_path, operation, strerror(errno));
+	}
+	if (errno) {
+		pThis->eval = errx(pThis->pCtx, 1, "fts_read: %s " CUR_LINE() "\n", strerror(errno));
+	}
+	fts_close(fts);
+	return pThis->eval;
+}
+
+static int
+rm_file(PRMINSTANCE pThis, char **argv)
+{
+	struct stat sb;
+	int rval;
+	char *f;
+
+	/*
+	 * Check up front before anything is deleted.
+	 */
+	int i;
+	for (i = 0; argv[i]; i++) {
+		if (kBuildProtectionEnforce(&pThis->g_ProtData, KBUILDPROTECTIONTYPE_FULL, argv[i]))
+			return 1;
+	}
+
+	/*
+	 * Remove a file.  POSIX 1003.2 states that, by default, attempting
+	 * to remove a directory is an error, so must always stat the file.
+	 */
+	while ((f = *argv++) != NULL) {
+		const char *operation = "?";
+		/* Assume if can't stat the file, can't unlink it. */
+		if (lstat(f, &sb)) {
+#ifdef FTS_WHITEOUT
+			if (pThis->Wflag) {
+				sb.st_mode = S_IFWHT|S_IWUSR|S_IRUSR;
+			} else {
+#else
+			{
+#endif
+				if (!pThis->fflag || errno != ENOENT)
+					pThis->eval = errx(pThis->pCtx, 1, "%s: lstat failed: %s " CUR_LINE() "\n",
+							   f, strerror(errno));
+				continue;
+			}
+#ifdef FTS_WHITEOUT
+		} else if (pThis->Wflag) {
+			errx(pThis->pCtx, 1, "%s: %s\n", f, strerror(EEXIST));
+			pThis->eval = 1;
+			continue;
+#endif
+		}
+
+		if (S_ISDIR(sb.st_mode) && !pThis->dflag) {
+			pThis->eval = errx(pThis->pCtx, 1, "%s: is a directory\n", f);
+			continue;
+		}
+		if (!pThis->fflag && !S_ISWHT(sb.st_mode) && !check(pThis, f, f, &sb))
+			continue;
+		rval = 0;
+#ifdef UF_APPEND
+		if (!pThis->uid &&
+		    (sb.st_flags & (UF_APPEND|UF_IMMUTABLE)) &&
+		    !(sb.st_flags & (SF_APPEND|SF_IMMUTABLE)))
+			rval = chflags(f, sb.st_flags & ~(UF_APPEND|UF_IMMUTABLE));
+#endif
+		if (rval == 0) {
+			if (S_ISWHT(sb.st_mode)) {
+				rval = undelete(f);
+				operation = "undelete";
+			} else if (S_ISDIR(sb.st_mode)) {
+				rval = rmdir(f);
+				operation = "rmdir";
+			} else {
+				if (pThis->Pflag)
+					if (!rm_overwrite(pThis, f, &sb))
+						continue;
+#ifndef KBUILD_OS_WINDOWS
+				rval = unlink(f);
+				operation = "unlink";
+#else
+				if (pThis->fUseNtDeleteFile) {
+					rval = birdUnlinkForcedFast(f);
+					operation = "NtDeleteFile";
+				} else {
+					rval = birdUnlinkForced(f);
+					operation = "unlink";
+				}
+#endif
+			}
+		}
+		if (rval && (!pThis->fflag || errno != ENOENT))
+			pThis->eval = errx(pThis->pCtx, 1, "%s: %s failed: %s" CUR_LINE() "\n", f, operation, strerror(errno));
+		if (pThis->vflag && rval == 0)
+			kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s\n", f);
+	}
+	return pThis->eval;
+}
+
+/*
+ * rm_overwrite --
+ *	Overwrite the file 3 times with varying bit patterns.
+ *
+ * XXX
+ * This is a cheap way to *really* delete files.  Note that only regular
+ * files are deleted, directories (and therefore names) will remain.
+ * Also, this assumes a fixed-block file system (like FFS, or a V7 or a
+ * System V file system).  In a logging file system, you'll have to have
+ * kernel support.
+ */
+static int
+rm_overwrite(PRMINSTANCE pThis, char *file, struct stat *sbp)
+{
+	struct stat sb;
+#ifdef HAVE_FSTATFS
+	struct statfs fsb;
+#endif
+	off_t len;
+	int bsize, fd, wlen;
+	char *buf = NULL;
+	const char *operation = "lstat";
+	int error;
+
+	fd = -1;
+	if (sbp == NULL) {
+		if (lstat(file, &sb))
+			goto err;
+		sbp = &sb;
+	}
+	if (!S_ISREG(sbp->st_mode))
+		return (1);
+	operation = "open";
+	if ((fd = open(file, O_WRONLY | KMK_OPEN_NO_INHERIT, 0)) == -1)
+		goto err;
+#ifdef HAVE_FSTATFS
+	if (fstatfs(fd, &fsb) == -1)
+		goto err;
+	bsize = MAX(fsb.f_iosize, 1024);
+#elif defined(HAVE_ST_BLKSIZE)
+	bsize = MAX(sb.st_blksize, 1024);
+#else
+	bsize = 1024;
+#endif
+	if ((buf = malloc(bsize)) == NULL) {
+		err(pThis->pCtx, 1, "%s: malloc", file);
+		close(fd);
+		return 1;
+	}
+
+#define	PASS(byte) {							\
+	operation = "write";    					\
+	memset(buf, byte, bsize);					\
+	for (len = sbp->st_size; len > 0; len -= wlen) {		\
+		wlen = len < bsize ? len : bsize;			\
+		if (write(fd, buf, wlen) != wlen)			\
+			goto err;					\
+	}								\
+}
+	PASS(0xff);
+	operation = "fsync/lseek";
+	if (fsync(fd) || lseek(fd, (off_t)0, SEEK_SET))
+		goto err;
+	PASS(0x00);
+	operation = "fsync/lseek";
+	if (fsync(fd) || lseek(fd, (off_t)0, SEEK_SET))
+		goto err;
+	PASS(0xff);
+	if (!fsync(fd) && !close(fd)) {
+		free(buf);
+		return (1);
+	}
+	operation = "fsync/close";
+
+err:	pThis->eval = 1;
+	error = errno;
+	if (buf)
+		free(buf);
+	if (fd != -1)
+		close(fd);
+	errx(pThis->pCtx, 1, "%s: %s: %s: %s" CUR_LINE() "\n", operation, pThis->pCtx->pszProgName, file, strerror(error));
+	return (0);
+}
+
+
+static int
+check(PRMINSTANCE pThis, char *path, char *name, struct stat *sp)
+{
+	int ch, first;
+	char modep[15], *flagsp;
+
+	/* Check -i first. */
+	if (pThis->iflag)
+		(void)fprintf(stderr, "%s: remove %s? ", pThis->pCtx->pszProgName, path);
+	else {
+		/*
+		 * If it's not a symbolic link and it's unwritable and we're
+		 * talking to a terminal, ask.  Symbolic links are excluded
+		 * because their permissions are meaningless.  Check stdin_ok
+		 * first because we may not have stat'ed the file.
+		 * Also skip this check if the -P option was specified because
+		 * we will not be able to overwrite file contents and will
+		 * barf later.
+		 */
+		if (!pThis->stdin_ok || S_ISLNK(sp->st_mode) || pThis->Pflag ||
+		    (!access(name, W_OK) &&
+#ifdef SF_APPEND
+		    !(sp->st_flags & (SF_APPEND|SF_IMMUTABLE)) &&
+		    (!(sp->st_flags & (UF_APPEND|UF_IMMUTABLE)) || !pThis->uid))
+#else
+                    1)
+#endif
+                    )
+			return (1);
+		bsd_strmode(sp->st_mode, modep);
+#if defined(SF_APPEND) && K_OS != K_OS_GNU_KFBSD && K_OS != K_OS_GNU_HURD
+		if ((flagsp = fflagstostr(sp->st_flags)) == NULL) {
+			err(pThis->pCtx, 1, "fflagstostr");
+			flagsp = "<bad-fflagstostr>";
+		}
+		(void)fprintf(stderr, "override %s%s%s/%s %s%sfor %s? ",
+		              modep + 1, modep[9] == ' ' ? "" : " ",
+		              user_from_uid(sp->st_uid, 0),
+		              group_from_gid(sp->st_gid, 0),
+		              *flagsp ? flagsp : "", *flagsp ? " " : "",
+		              path);
+		free(flagsp);
+#else
+		(void)flagsp;
+		(void)fprintf(stderr, "override %s%s %d/%d for %s? ",
+		              modep + 1, modep[9] == ' ' ? "" : " ",
+		              sp->st_uid, sp->st_gid, path);
+#endif
+	}
+	(void)fflush(stderr);
+
+	first = ch = getchar();
+	while (ch != '\n' && ch != EOF)
+		ch = getchar();
+	return (first == 'y' || first == 'Y');
+}
+
+#define ISDOT(a)	((a)[0] == '.' && (!(a)[1] || ((a)[1] == '.' && !(a)[2])))
+static void
+checkdot(PRMINSTANCE pThis, char **argv)
+{
+	char *p, **save, **t;
+	int complained;
+
+	complained = 0;
+	for (t = argv; *t;) {
+#ifdef HAVE_DOS_PATHS
+		const char *tmp = p = *t;
+		while (*tmp) {
+			switch (*tmp) {
+			case '/':
+			case '\\':
+			case ':':
+				p = (char *)tmp + 1;
+				break;
+			}
+			tmp++;
+		}
+#else
+		if ((p = strrchr(*t, '/')) != NULL)
+			++p;
+		else
+			p = *t;
+#endif
+		if (ISDOT(p)) {
+			if (!complained++)
+				warnx(pThis->pCtx, "\".\" and \"..\" may not be removed\n");
+			pThis->eval = 1;
+			for (save = t; (t[0] = t[1]) != NULL; ++t)
+				continue;
+			t = save;
+		} else
+			++t;
+	}
+}
+
+static int
+usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+	kmk_builtin_ctx_printf(pCtx, fIsErr,
+	                       "usage: %s [options] file ...\n"
+	                       "   or: %s --help\n"
+	                       "   or: %s --version\n"
+	                       "\n"
+	                       "Options:\n"
+	                       "   -f\n"
+	                       "       Attempt to remove files without prompting, regardless of the file\n"
+	                       "       permission. Ignore non-existing files. Overrides previous -i's.\n"
+	                       "   -i\n"
+	                       "       Prompt for each file. Always.\n"
+	                       "   -d\n"
+	                       "       Attempt to remove directories as well as other kinds of files.\n"
+	                       "   -P\n"
+	                       "       Overwrite regular files before deleting; three passes: ff,0,ff\n"
+	                       "   -R\n"
+	                       "       Attempt to remove the file hierachy rooted in each file argument.\n"
+	                       "       This option implies -d and file protection.\n"
+	                       "   -v\n"
+	                       "       Be verbose, show files as they are removed.\n"
+	                       "   -W\n"
+	                       "       Undelete without files.\n"
+	                       "   --disable-protection\n"
+	                       "       Will disable the protection file protection applied with -R.\n"
+	                       "   --enable-protection\n"
+	                       "       Will enable the protection file protection applied with -R.\n"
+	                       "   --enable-full-protection\n"
+	                       "       Will enable the protection file protection for all operations.\n"
+	                       "   --disable-full-protection\n"
+	                       "       Will disable the protection file protection for all operations.\n"
+	                       "   --protection-depth\n"
+	                       "       Number or path indicating the file protection depth. Default: %d\n"
+	                       "\n"
+	                       "Environment:\n"
+	                       "    KMK_RM_DISABLE_PROTECTION\n"
+	                       "       Same as --disable-protection. Overrides command line.\n"
+	                       "    KMK_RM_ENABLE_PROTECTION\n"
+	                       "       Same as --enable-protection. Overrides everyone else.\n"
+	                       "    KMK_RM_ENABLE_FULL_PROTECTION\n"
+	                       "       Same as --enable-full-protection. Overrides everyone else.\n"
+	                       "    KMK_RM_DISABLE_FULL_PROTECTION\n"
+	                       "       Same as --disable-full-protection. Overrides command line.\n"
+	                       "    KMK_RM_PROTECTION_DEPTH\n"
+	                       "       Same as --protection-depth. Overrides command line.\n"
+	                       "\n"
+	                       "The file protection of the top %d layers of the file hierarchy is there\n"
+	                       "to try prevent makefiles from doing bad things to your system. This\n"
+	                       "protection is not bulletproof, but should help prevent you from shooting\n"
+	                       "yourself in the foot.\n"
+	                       ,
+	                       pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName,
+	                       kBuildProtectionDefaultDepth(), kBuildProtectionDefaultDepth());
+	return EX_USAGE;
+}
+
diff --git a/src/kmk/kmkbuiltin/rmdir.c b/src/kmk/kmkbuiltin/rmdir.c
new file mode 100644
index 0000000..b4cd981
--- /dev/null
+++ b/src/kmk/kmkbuiltin/rmdir.c
@@ -0,0 +1,251 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char const copyright[] =
+"@(#) Copyright (c) 1992, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)rmdir.c	8.3 (Berkeley) 4/2/94";
+#endif /* not lint */
+#endif
+#if 0
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/bin/rmdir/rmdir.c,v 1.20 2005/01/26 06:51:28 ssouhlal Exp $");
+#endif
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define FAKES_NO_GETOPT_H /* bird */
+#include "config.h"
+#include "err.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+#include "getopt_r.h"
+#include "kmkbuiltin.h"
+
+#ifdef _MSC_VER
+# include "mscfakes.h"
+#endif
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct RMDIRINSTANCE
+{
+    PKMKBUILTINCTX pCtx;
+    int pflag;
+    int vflag;
+    int ignore_fail_on_non_empty;
+    int ignore_fail_on_not_exist;
+} RMDIRINSTANCE;
+typedef RMDIRINSTANCE *PRMDIRINSTANCE;
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static struct option long_options[] =
+{
+    { "help",                       no_argument, 0, 262 },
+    { "ignore-fail-on-non-empty",   no_argument, 0, 260 },
+    { "ignore-fail-on-not-exist",   no_argument, 0, 261 },
+    { "parents",                    no_argument, 0, 'p' },
+    { "verbose",                    no_argument, 0, 'v' },
+    { "version",                    no_argument, 0, 263 },
+    { 0, 0,	0, 0 },
+};
+
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+#if !defined(KMK_BUILTIN_STANDALONE) && defined(KBUILD_OS_WINDOWS)
+extern int dir_cache_deleted_directory(const char *pszDir);
+#endif
+static int rm_path(PRMDIRINSTANCE, char *);
+static int usage(PKMKBUILTINCTX, int);
+
+
+int
+kmk_builtin_rmdir(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+	RMDIRINSTANCE This;
+	struct getopt_state_r gos;
+	int ch, errors;
+
+	/* Initialize global instance. */
+	This.pCtx = pCtx;
+	This.ignore_fail_on_not_exist = 0;
+	This.ignore_fail_on_non_empty = 0;
+	This.vflag = 0;
+	This.pflag = 0;
+
+	getopt_initialize_r(&gos, argc, argv, "pv", long_options, envp, pCtx);
+	while ((ch = getopt_long_r(&gos, NULL)) != -1)
+		switch(ch) {
+		case 'p':
+			This.pflag = 1;
+			break;
+		case 'v':
+			This.vflag = 1;
+			break;
+		case 260:
+			This.ignore_fail_on_non_empty = 1;
+			break;
+		case 261:
+			This.ignore_fail_on_not_exist = 1;
+			break;
+		case 262:
+			usage(pCtx, 0);
+			return 0;
+		case 263:
+			return kbuild_version(argv[0]);
+		case '?':
+		default:
+			return usage(pCtx, 1);
+		}
+	argc -= gos.optind;
+	argv += gos.optind;
+
+	if (argc == 0)
+		return /*usage(stderr)*/0;
+
+	for (errors = 0; *argv; argv++) {
+		if (rmdir(*argv) < 0) {
+			if (	(   !This.ignore_fail_on_non_empty
+				 || (errno != ENOTEMPTY && errno != EPERM && errno != EACCES && errno != EINVAL && errno != EEXIST))
+			    &&	(   !This.ignore_fail_on_not_exist
+				 || errno != ENOENT)) {
+				warn(pCtx, "rmdir: %s", *argv);
+				errors = 1;
+				continue;
+			}
+			if (!This.ignore_fail_on_not_exist || errno != ENOENT)
+				continue;
+			/* (only ignored doesn't exist errors fall thru) */
+		} else {
+#if !defined(KMK_BUILTIN_STANDALONE) && defined(KBUILD_OS_WINDOWS)
+			dir_cache_deleted_directory(*argv);
+#endif
+			if (This.vflag)
+				kmk_builtin_ctx_printf(pCtx, 0, "%s\n", *argv);
+		}
+		if (This.pflag)
+			errors |= rm_path(&This, *argv);
+	}
+
+	return errors;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_rmdir", NULL };
+    return kmk_builtin_rmdir(argc, argv, envp, &Ctx);
+}
+#endif
+
+static int
+rm_path(PRMDIRINSTANCE pThis, char *path)
+{
+	char *p;
+	const size_t len = strlen(path);
+	p = alloca(len + 1);
+	path = memcpy(p, path, len + 1);
+
+#if defined(_MSC_VER) || defined(__EMX__)
+	p = strchr(path, '\\');
+	while (p) {
+		*p++ = '/';
+		p = strchr(p, '\\');
+	}
+#endif
+
+	p = path + len;
+	while (--p > path && *p == '/')
+		;
+	*++p = '\0';
+	while ((p = strrchr(path, '/')) != NULL) {
+		/* Delete trailing slashes. */
+		while (--p >= path && *p == '/')
+			;
+		*++p = '\0';
+		if (p == path)
+			break;
+#if defined(_MSC_VER) || defined(__EMX__)
+		if (p[-1] == ':' && p - 2 == path)
+			break;
+#endif
+
+		if (rmdir(path) < 0) {
+			if (   pThis->ignore_fail_on_non_empty
+			    && (   errno == ENOTEMPTY || errno == EPERM || errno == EACCES || errno == EINVAL || errno == EEXIST))
+				break;
+			if (!pThis->ignore_fail_on_not_exist || errno != ENOENT) {
+				warn(pThis->pCtx, "rmdir: %s", path);
+				return (1);
+			}
+		}
+#if defined(KMK) && defined(KBUILD_OS_WINDOWS)
+		else {
+			dir_cache_deleted_directory(path);
+		}
+#endif
+		if (pThis->vflag)
+			kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s\n", path);
+	}
+
+	return (0);
+}
+
+static int
+usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+	kmk_builtin_ctx_printf(pCtx, fIsErr,
+			       "usage: %s [-pv --ignore-fail-on-non-empty --ignore-fail-on-not-exist] directory ...\n"
+			       "   or: %s --help\n"
+			       "   or: %s --version\n",
+			       pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName);
+	return 1;
+}
+
diff --git a/src/kmk/kmkbuiltin/setmode.c b/src/kmk/kmkbuiltin/setmode.c
new file mode 100644
index 0000000..80ed301
--- /dev/null
+++ b/src/kmk/kmkbuiltin/setmode.c
@@ -0,0 +1,506 @@
+/*	$NetBSD: setmode.c,v 1.30 2003/08/07 16:42:56 agc Exp $	*/
+
+/*
+ * Copyright (c) 1989, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Dave Borman at Cray Research, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*#include <sys/cdefs.h>*/
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)setmode.c	8.2 (Berkeley) 3/25/94";
+#else
+__RCSID("$NetBSD: setmode.c,v 1.30 2003/08/07 16:42:56 agc Exp $");
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+/*#include "namespace.h"*/
+#include "config.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdlib.h>
+#ifndef _MSC_VER
+#include <unistd.h>
+#else
+#include "mscfakes.h"
+#endif
+
+#ifdef SETMODE_DEBUG
+#include <stdio.h>
+#endif
+
+/*#ifdef __weak_alias
+__weak_alias(getmode,_getmode)
+__weak_alias(setmode,_setmode)
+#endif*/
+
+#define	SET_LEN	6		/* initial # of bitcmd struct to malloc */
+#define	SET_LEN_INCR 4		/* # of bitcmd structs to add as needed */
+
+typedef struct bitcmd {
+	char	cmd;
+	char	cmd2;
+	mode_t	bits;
+} BITCMD;
+
+#define	CMD2_CLR	0x01
+#define	CMD2_SET	0x02
+#define	CMD2_GBITS	0x04
+#define	CMD2_OBITS	0x08
+#define	CMD2_UBITS	0x10
+
+static BITCMD	*addcmd(BITCMD *, int, int, int, u_int);
+static void	 compress_mode(BITCMD *);
+#ifdef SETMODE_DEBUG
+static void	 dumpmode(BITCMD *);
+#endif
+
+#ifndef _DIAGASSERT
+# define _DIAGASSERT assert
+#endif
+
+#ifndef S_ISTXT
+# ifdef S_ISVTX
+#  define S_ISTXT S_ISVTX
+# else
+#  define S_ISTXT 0
+# endif
+#endif /* !S_ISTXT */
+
+extern mode_t g_fUMask; /* Initialize in main() and keep up to date. */
+
+
+/*
+ * Given the old mode and an array of bitcmd structures, apply the operations
+ * described in the bitcmd structures to the old mode, and return the new mode.
+ * Note that there is no '=' command; a strict assignment is just a '-' (clear
+ * bits) followed by a '+' (set bits).
+ */
+mode_t
+bsd_getmode(bbox, omode)
+	const void *bbox;
+	mode_t omode;
+{
+	const BITCMD *set;
+	mode_t clrval, newmode, value;
+
+	_DIAGASSERT(bbox != NULL);
+
+	set = (const BITCMD *)bbox;
+	newmode = omode;
+	for (value = 0;; set++)
+		switch(set->cmd) {
+		/*
+		 * When copying the user, group or other bits around, we "know"
+		 * where the bits are in the mode so that we can do shifts to
+		 * copy them around.  If we don't use shifts, it gets real
+		 * grundgy with lots of single bit checks and bit sets.
+		 */
+		case 'u':
+			value = (newmode & S_IRWXU) >> 6;
+			goto common;
+
+		case 'g':
+			value = (newmode & S_IRWXG) >> 3;
+			goto common;
+
+		case 'o':
+			value = newmode & S_IRWXO;
+common:			if (set->cmd2 & CMD2_CLR) {
+				clrval =
+				    (set->cmd2 & CMD2_SET) ?  S_IRWXO : value;
+				if (set->cmd2 & CMD2_UBITS)
+					newmode &= ~((clrval<<6) & set->bits);
+				if (set->cmd2 & CMD2_GBITS)
+					newmode &= ~((clrval<<3) & set->bits);
+				if (set->cmd2 & CMD2_OBITS)
+					newmode &= ~(clrval & set->bits);
+			}
+			if (set->cmd2 & CMD2_SET) {
+				if (set->cmd2 & CMD2_UBITS)
+					newmode |= (value<<6) & set->bits;
+				if (set->cmd2 & CMD2_GBITS)
+					newmode |= (value<<3) & set->bits;
+				if (set->cmd2 & CMD2_OBITS)
+					newmode |= value & set->bits;
+			}
+			break;
+
+		case '+':
+			newmode |= set->bits;
+			break;
+
+		case '-':
+			newmode &= ~set->bits;
+			break;
+
+		case 'X':
+			if (omode & (S_IFDIR|S_IXUSR|S_IXGRP|S_IXOTH))
+				newmode |= set->bits;
+			break;
+
+		case '\0':
+		default:
+#ifdef SETMODE_DEBUG
+			(void)printf("getmode:%04o -> %04o\n", omode, newmode);
+#endif
+			return (newmode);
+		}
+}
+
+#define	ADDCMD(a, b, c, d) do {						\
+	if (set >= endset) {						\
+		BITCMD *newset;						\
+		setlen += SET_LEN_INCR;					\
+		newset = realloc(saveset, sizeof(BITCMD) * setlen);	\
+		if (newset == NULL) {					\
+			free(saveset);					\
+			return (NULL);					\
+		}							\
+		set = newset + (set - saveset);				\
+		saveset = newset;					\
+		endset = newset + (setlen - 2);				\
+	}								\
+	set = addcmd(set, (a), (b), (c), (d));				\
+} while (/*CONSTCOND*/0)
+
+#define	STANDARD_BITS	(S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
+
+void *
+bsd_setmode(p)
+	const char *p;
+{
+	int perm, who;
+	char op, *ep;
+	BITCMD *set, *saveset, *endset;
+#ifndef _MSC_VER
+	sigset_t signset, sigoset;
+#endif
+	mode_t mask;
+	int equalopdone = 0;	/* pacify gcc */
+	int permXbits, setlen;
+
+	if (!*p)
+		return (NULL);
+
+	/*
+	 * Get a copy of the mask for the permissions that are mask relative.
+	 * Flip the bits, we want what's not set.  Since it's possible that
+	 * the caller is opening files inside a signal handler, protect them
+	 * as best we can.
+	 */
+#ifndef _MSC_VER
+	sigfillset(&signset);
+	(void)sigprocmask(SIG_BLOCK, &signset, &sigoset);
+#endif
+	mask = g_fUMask;
+	assert(mask == umask(g_fUMask));
+	mask = ~mask;
+#ifndef _MSC_VER
+	(void)sigprocmask(SIG_SETMASK, &sigoset, NULL);
+#endif
+
+	setlen = SET_LEN + 2;
+
+	if ((set = malloc((u_int)(sizeof(BITCMD) * setlen))) == NULL)
+		return (NULL);
+	saveset = set;
+	endset = set + (setlen - 2);
+
+	/*
+	 * If an absolute number, get it and return; disallow non-octal digits
+	 * or illegal bits.
+	 */
+	if (isdigit((unsigned char)*p)) {
+		perm = (mode_t)strtol(p, &ep, 8);
+		if (*ep || perm & ~(STANDARD_BITS|S_ISTXT)) {
+			free(saveset);
+			return (NULL);
+		}
+		ADDCMD('=', (STANDARD_BITS|S_ISTXT), perm, mask);
+		set->cmd = 0;
+		return (saveset);
+	}
+
+	/*
+	 * Build list of structures to set/clear/copy bits as described by
+	 * each clause of the symbolic mode.
+	 */
+	for (;;) {
+		/* First, find out which bits might be modified. */
+		for (who = 0;; ++p) {
+			switch (*p) {
+			case 'a':
+				who |= STANDARD_BITS;
+				break;
+			case 'u':
+				who |= S_ISUID|S_IRWXU;
+				break;
+			case 'g':
+				who |= S_ISGID|S_IRWXG;
+				break;
+			case 'o':
+				who |= S_IRWXO;
+				break;
+			default:
+				goto getop;
+			}
+		}
+
+getop:		if ((op = *p++) != '+' && op != '-' && op != '=') {
+			free(saveset);
+			return (NULL);
+		}
+		if (op == '=')
+			equalopdone = 0;
+
+		who &= ~S_ISTXT;
+		for (perm = 0, permXbits = 0;; ++p) {
+			switch (*p) {
+			case 'r':
+				perm |= S_IRUSR|S_IRGRP|S_IROTH;
+				break;
+			case 's':
+				/*
+				 * If specific bits where requested and
+				 * only "other" bits ignore set-id.
+				 */
+				if (who == 0 || (who & ~S_IRWXO))
+					perm |= S_ISUID|S_ISGID;
+				break;
+			case 't':
+				/*
+				 * If specific bits where requested and
+				 * only "other" bits ignore set-id.
+				 */
+				if (who == 0 || (who & ~S_IRWXO)) {
+					who |= S_ISTXT;
+					perm |= S_ISTXT;
+				}
+				break;
+			case 'w':
+				perm |= S_IWUSR|S_IWGRP|S_IWOTH;
+				break;
+			case 'X':
+				permXbits = S_IXUSR|S_IXGRP|S_IXOTH;
+				break;
+			case 'x':
+				perm |= S_IXUSR|S_IXGRP|S_IXOTH;
+				break;
+			case 'u':
+			case 'g':
+			case 'o':
+				/*
+				 * When ever we hit 'u', 'g', or 'o', we have
+				 * to flush out any partial mode that we have,
+				 * and then do the copying of the mode bits.
+				 */
+				if (perm) {
+					ADDCMD(op, who, perm, mask);
+					perm = 0;
+				}
+				if (op == '=')
+					equalopdone = 1;
+				if (op == '+' && permXbits) {
+					ADDCMD('X', who, permXbits, mask);
+					permXbits = 0;
+				}
+				ADDCMD(*p, who, op, mask);
+				break;
+
+			default:
+				/*
+				 * Add any permissions that we haven't already
+				 * done.
+				 */
+				if (perm || (op == '=' && !equalopdone)) {
+					if (op == '=')
+						equalopdone = 1;
+					ADDCMD(op, who, perm, mask);
+					perm = 0;
+				}
+				if (permXbits) {
+					ADDCMD('X', who, permXbits, mask);
+					permXbits = 0;
+				}
+				goto apply;
+			}
+		}
+
+apply:		if (!*p)
+			break;
+		if (*p != ',')
+			goto getop;
+		++p;
+	}
+	set->cmd = 0;
+#ifdef SETMODE_DEBUG
+	(void)printf("Before compress_mode()\n");
+	dumpmode(saveset);
+#endif
+	compress_mode(saveset);
+#ifdef SETMODE_DEBUG
+	(void)printf("After compress_mode()\n");
+	dumpmode(saveset);
+#endif
+	return (saveset);
+}
+
+static BITCMD *
+addcmd(set, op, who, oparg, mask)
+	BITCMD *set;
+	int oparg, who;
+	int op;
+	u_int mask;
+{
+
+	_DIAGASSERT(set != NULL);
+
+	switch (op) {
+	case '=':
+		set->cmd = '-';
+		set->bits = who ? who : STANDARD_BITS;
+		set++;
+
+		op = '+';
+		/* FALLTHROUGH */
+	case '+':
+	case '-':
+	case 'X':
+		set->cmd = op;
+		set->bits = (who ? (mode_t)who : mask) & oparg;
+		break;
+
+	case 'u':
+	case 'g':
+	case 'o':
+		set->cmd = op;
+		if (who) {
+			set->cmd2 = ((who & S_IRUSR) ? CMD2_UBITS : 0) |
+				    ((who & S_IRGRP) ? CMD2_GBITS : 0) |
+				    ((who & S_IROTH) ? CMD2_OBITS : 0);
+			set->bits = (mode_t)~0;
+		} else {
+			set->cmd2 = CMD2_UBITS | CMD2_GBITS | CMD2_OBITS;
+			set->bits = mask;
+		}
+
+		if (oparg == '+')
+			set->cmd2 |= CMD2_SET;
+		else if (oparg == '-')
+			set->cmd2 |= CMD2_CLR;
+		else if (oparg == '=')
+			set->cmd2 |= CMD2_SET|CMD2_CLR;
+		break;
+	}
+	return (set + 1);
+}
+
+#ifdef SETMODE_DEBUG
+static void
+dumpmode(set)
+	BITCMD *set;
+{
+
+	_DIAGASSERT(set != NULL);
+
+	for (; set->cmd; ++set)
+		(void)printf("cmd: '%c' bits %04o%s%s%s%s%s%s\n",
+		    set->cmd, set->bits, set->cmd2 ? " cmd2:" : "",
+		    set->cmd2 & CMD2_CLR ? " CLR" : "",
+		    set->cmd2 & CMD2_SET ? " SET" : "",
+		    set->cmd2 & CMD2_UBITS ? " UBITS" : "",
+		    set->cmd2 & CMD2_GBITS ? " GBITS" : "",
+		    set->cmd2 & CMD2_OBITS ? " OBITS" : "");
+}
+#endif
+
+/*
+ * Given an array of bitcmd structures, compress by compacting consecutive
+ * '+', '-' and 'X' commands into at most 3 commands, one of each.  The 'u',
+ * 'g' and 'o' commands continue to be separate.  They could probably be
+ * compacted, but it's not worth the effort.
+ */
+static void
+compress_mode(set)
+	BITCMD *set;
+{
+	BITCMD *nset;
+	int setbits, clrbits, Xbits, op;
+
+	_DIAGASSERT(set != NULL);
+
+	for (nset = set;;) {
+		/* Copy over any 'u', 'g' and 'o' commands. */
+		while ((op = nset->cmd) != '+' && op != '-' && op != 'X') {
+			*set++ = *nset++;
+			if (!op)
+				return;
+		}
+
+		for (setbits = clrbits = Xbits = 0;; nset++) {
+			if ((op = nset->cmd) == '-') {
+				clrbits |= nset->bits;
+				setbits &= ~nset->bits;
+				Xbits &= ~nset->bits;
+			} else if (op == '+') {
+				setbits |= nset->bits;
+				clrbits &= ~nset->bits;
+				Xbits &= ~nset->bits;
+			} else if (op == 'X')
+				Xbits |= nset->bits & ~setbits;
+			else
+				break;
+		}
+		if (clrbits) {
+			set->cmd = '-';
+			set->cmd2 = 0;
+			set->bits = clrbits;
+			set++;
+		}
+		if (setbits) {
+			set->cmd = '+';
+			set->cmd2 = 0;
+			set->bits = setbits;
+			set++;
+		}
+		if (Xbits) {
+			set->cmd = 'X';
+			set->cmd2 = 0;
+			set->bits = Xbits;
+			set++;
+		}
+	}
+}
diff --git a/src/kmk/kmkbuiltin/sleep.c b/src/kmk/kmkbuiltin/sleep.c
new file mode 100644
index 0000000..044ed9c
--- /dev/null
+++ b/src/kmk/kmkbuiltin/sleep.c
@@ -0,0 +1,179 @@
+/* $Id: sleep.c 3192 2018-03-26 20:25:56Z bird $ */
+/** @file
+ * kmk_sleep - suspend execution for an interval of time.
+ */
+
+/*
+ * Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#if defined(_MSC_VER)
+# include <Windows.h>
+#else
+# include <unistd.h>
+# include <time.h>
+#endif
+
+#include "err.h"
+#include "../kmkbuiltin.h"
+
+
+static int kmk_builtin_sleep_usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+    kmk_builtin_ctx_printf(pCtx, fIsErr,
+                           "usage: %s <seconds>[s]\n"
+                           "   or: %s <milliseconds>ms\n"
+                           "   or: %s <minutes>m\n"
+                           "   or: %s <hours>h\n"
+                           "   or: %s <days>d\n"
+                           "   or: %s --help\n"
+                           "   or: %s --version\n"
+                           "\n"
+                           "Only integer values are accepted.\n"
+                           ,
+                           pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName,
+                           pCtx->pszProgName, pCtx->pszProgName, pCtx->pszProgName);
+    return 1;
+}
+
+
+int kmk_builtin_sleep(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+    long cMsToSleep;
+    long lTmp;
+    unsigned long ulFactor;
+    char *pszInterval;
+    char *pszSuff;
+
+    /*
+     * Parse arguments.
+     */
+    if (argc != 2)
+        return kmk_builtin_sleep_usage(pCtx, 1);
+
+    /* help request */
+    if (   !strcmp(argv[1], "-h")
+        || !strcmp(argv[1], "-?")
+        || !strcmp(argv[1], "-H")
+        || !strcmp(argv[1], "--help"))
+    {
+        kmk_builtin_sleep_usage(pCtx, 0);
+        return 0;
+    }
+
+    /* version request */
+    if (   !strcmp(argv[1], "-V")
+        || !strcmp(argv[1], "--version"))
+    {
+        printf("kmk_sleep - kBuild version %d.%d.%d (r%u)\n"
+               "Copyright (c) 2008-2009 knut st. osmundsen\n",
+               KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH,
+               KBUILD_SVN_REV);
+        return 0;
+    }
+
+    /*
+     * Try convert the argument to a time period.
+     * Allow spaces before, between and after the different parts.
+     */
+    pszInterval = argv[1];
+    while (isspace(*pszInterval))
+        pszInterval++;
+
+    cMsToSleep = strtol(pszInterval, &pszSuff, 0);
+    if (pszSuff == pszInterval)
+        return errx(pCtx, 1, "malformed interval '%s'!\n", pszInterval);
+
+    while (isspace(*pszSuff))
+        pszSuff++;
+
+    if (!*pszSuff)
+        ulFactor = 1000; /* s */
+    else
+    {
+        /* find the suffix length and check that it's only white space following it. */
+        int cchSuff;
+        int i = 1;
+        while (pszSuff[i] && !isspace(pszSuff[i]))
+            i++;
+        cchSuff = i;
+        while (pszSuff[i])
+        {
+            if (!isspace(pszSuff[i]))
+                return errx(pCtx, 1, "malformed interval '%s'!\n", pszInterval);
+            i++;
+        }
+
+        if (cchSuff == 2 && !strncmp (pszSuff, "ms", 2))
+            ulFactor = 1;
+        else if (cchSuff == 1 && *pszSuff == 's')
+            ulFactor = 1000;
+        else if (cchSuff == 1 && *pszSuff == 'm')
+            ulFactor = 60*1000;
+        else if (cchSuff == 1 && *pszSuff == 'h')
+            ulFactor = 60*60*1000;
+        else if (cchSuff == 1 && *pszSuff == 'd')
+            ulFactor = 24*60*60*1000;
+        else
+            return errx(pCtx, 1, "unknown suffix '%.*s'!\n", cchSuff, pszSuff);
+    }
+
+    lTmp = cMsToSleep;
+    cMsToSleep *= ulFactor;
+    if ((cMsToSleep / ulFactor) != (unsigned long)lTmp)
+        return errx(pCtx, 1, "time interval overflow!\n");
+
+    /*
+     * Do the actual sleeping.
+     */
+    if (cMsToSleep > 0)
+    {
+#if defined(_MSC_VER)
+        Sleep(cMsToSleep);
+#else
+        if (cMsToSleep)
+        {
+            struct timespec TimeSpec;
+            TimeSpec.tv_nsec = (cMsToSleep % 1000) * 1000000;
+            TimeSpec.tv_sec  =  cMsToSleep / 1000;
+            nanosleep(&TimeSpec, NULL);
+        }
+#endif
+    }
+
+    return 0;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_sleep", NULL };
+    return kmk_builtin_sleep(argc, argv, envp, &Ctx);
+}
+#endif
+
diff --git a/src/kmk/kmkbuiltin/solfakes.c b/src/kmk/kmkbuiltin/solfakes.c
new file mode 100644
index 0000000..6996ab4
--- /dev/null
+++ b/src/kmk/kmkbuiltin/solfakes.c
@@ -0,0 +1,99 @@
+/* $Id: solfakes.c 2901 2016-09-09 15:10:24Z bird $ */
+/** @file
+ * Fake Unix stuff for Solaris.
+ */
+
+/*
+ * Copyright (c) 2005-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "config.h"
+#include <errno.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include "solfakes.h"
+
+
+int asprintf(char **strp, const char *fmt, ...)
+{
+    int rc;
+    va_list va;
+    va_start(va, fmt);
+    rc = vasprintf(strp, fmt, va);
+    va_end(va);
+    return rc;
+}
+
+
+int vasprintf(char **strp, const char *fmt, va_list va)
+{
+    int rc;
+    char *psz;
+    size_t cb = 1024;
+
+    *strp = NULL;
+    for (;;)
+    {
+        va_list va2;
+
+        psz = malloc(cb);
+        if (!psz)
+            return -1;
+
+#ifdef va_copy
+        va_copy(va2, va);
+        rc = vsnprintf(psz, cb, fmt, va2);
+        va_end(va2);
+#else
+        va2 = va;
+        rc = vsnprintf(psz, cb, fmt, va2);
+#endif
+        if (rc < 0 || (size_t)rc < cb)
+            break;
+        cb *= 2;
+        free(psz);
+    }
+
+    *strp = psz;
+    return rc;
+}
+
+
+
+int sol_lchmod(const char *pszPath, mode_t mode)
+{
+    /*
+     * Weed out symbolic links.
+     */
+    struct stat s;
+    if (    !lstat(pszPath, &s)
+        &&  S_ISLNK(s.st_mode))
+    {
+        errno = -ENOSYS;
+        return -1;
+    }
+
+    return chmod(pszPath, mode);
+}
+
diff --git a/src/kmk/kmkbuiltin/solfakes.h b/src/kmk/kmkbuiltin/solfakes.h
new file mode 100644
index 0000000..30519cc
--- /dev/null
+++ b/src/kmk/kmkbuiltin/solfakes.h
@@ -0,0 +1,51 @@
+/* $Id: solfakes.h 3213 2018-03-30 21:03:28Z bird $ */
+/** @file
+ * Unix fakes for Solaris.
+ */
+
+/*
+ * Copyright (c) 2005-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef ___solfakes_h
+#define ___solfakes_h
+#ifdef __sun__
+
+#include <stdarg.h>
+#include <sys/types.h>
+#ifndef FAKES_NO_GETOPT_H
+# include "getopt.h"
+#endif
+
+#define _PATH_DEVNULL "/dev/null"
+#define ALLPERMS 0000777
+#define lutimes(path, tvs) utimes(path, tvs)
+#define lchmod sol_lchmod
+#define MAX(a,b) ((a) >= (b) ? (a) : (b))
+#ifndef USHRT_MAX
+# define USHRT_MAX 65535
+#endif
+
+int vasprintf(char **strp, const char *fmt, va_list va);
+int asprintf(char **strp, const char *fmt, ...);
+int sol_lchmod(const char *pszPath, mode_t mode);
+
+#endif /* __sun__ */
+#endif /* !___solfakes_h */
+
diff --git a/src/kmk/kmkbuiltin/strlcpy.c b/src/kmk/kmkbuiltin/strlcpy.c
new file mode 100644
index 0000000..e1be568
--- /dev/null
+++ b/src/kmk/kmkbuiltin/strlcpy.c
@@ -0,0 +1,78 @@
+/*	$OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp $	*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char *rcsid = "$OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp $");
+#include <sys/cdefs.h>
+//__FBSDID("$FreeBSD: src/lib/libc/string/strlcpy.c,v 1.7 2003/05/01 19:03:14 nectar Exp $");
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <string.h>
+
+/* This trick is for bootstrap.gmk. */
+#if defined(__DARWIN_C_LEVEL) && defined(__DARWIN_C_FULL)
+# define SKIP_STRLCPY
+#endif
+#ifndef SKIP_STRLCPY
+
+/*
+ * Copy src to string dst of size siz.  At most siz-1 characters
+ * will be copied.  Always NUL terminates (unless siz == 0).
+ * Returns strlen(src); if retval >= siz, truncation occurred.
+ */
+size_t strlcpy(dst, src, siz)
+	char *dst;
+	const char *src;
+	size_t siz;
+{
+	char *d = dst;
+	const char *s = src;
+	size_t n = siz;
+
+	/* Copy as many bytes as will fit */
+	if (n != 0 && --n != 0) {
+		do {
+			if ((*d++ = *s++) == 0)
+				break;
+		} while (--n != 0);
+	}
+
+	/* Not enough room in dst, add NUL and traverse rest of src */
+	if (n == 0) {
+		if (siz != 0)
+			*d = '\0';		/* NUL-terminate dst */
+		while (*s++)
+			;
+	}
+
+	return(s - src - 1);	/* count does not include NUL */
+}
+
+#endif /* !SKIP_STRLCPY */
diff --git a/src/kmk/kmkbuiltin/strmode.c b/src/kmk/kmkbuiltin/strmode.c
new file mode 100644
index 0000000..c2a99de
--- /dev/null
+++ b/src/kmk/kmkbuiltin/strmode.c
@@ -0,0 +1,197 @@
+/*	$NetBSD: strmode.c,v 1.16 2004/06/20 22:20:15 jmc Exp $	*/
+
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*#include <sys/cdefs.h>*/
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)strmode.c	8.3 (Berkeley) 8/15/94";
+#else
+__RCSID("$NetBSD: strmode.c,v 1.16 2004/06/20 22:20:15 jmc Exp $");
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+#include "config.h"
+/*#include "namespace.h"*/
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <assert.h>
+#ifndef _MSC_VER
+#include <unistd.h>
+#else
+#include "mscfakes.h"
+#endif
+
+#ifndef _DIAGASSERT
+#define _DIAGASSERT assert
+#endif
+
+void
+bsd_strmode(mode, p)
+	mode_t mode;
+	char *p;
+{
+
+	_DIAGASSERT(p != NULL);
+
+	 /* print type */
+	switch (mode & S_IFMT) {
+	case S_IFDIR:			/* directory */
+		*p++ = 'd';
+		break;
+	case S_IFCHR:			/* character special */
+		*p++ = 'c';
+		break;
+#ifdef S_IFBLK
+	case S_IFBLK:			/* block special */
+		*p++ = 'b';
+		break;
+#endif
+	case S_IFREG:			/* regular */
+#ifdef S_ARCH2
+		if ((mode & S_ARCH2) != 0) {
+			*p++ = 'A';
+		} else if ((mode & S_ARCH1) != 0) {
+			*p++ = 'a';
+		} else {
+#endif
+			*p++ = '-';
+#ifdef S_ARCH2
+		}
+#endif
+		break;
+#ifdef S_IFLNK
+	case S_IFLNK:			/* symbolic link */
+		*p++ = 'l';
+		break;
+#endif
+#ifdef S_IFSOCK
+	case S_IFSOCK:			/* socket */
+		*p++ = 's';
+		break;
+#endif
+#ifdef S_IFIFO
+	case S_IFIFO:			/* fifo */
+		*p++ = 'p';
+		break;
+#endif
+#ifdef S_IFWHT
+	case S_IFWHT:			/* whiteout */
+		*p++ = 'w';
+		break;
+#endif
+#ifdef S_IFDOOR
+	case S_IFDOOR:			/* door */
+		*p++ = 'D';
+		break;
+#endif
+	default:			/* unknown */
+		*p++ = '?';
+		break;
+	}
+	/* usr */
+	if (mode & S_IRUSR)
+		*p++ = 'r';
+	else
+		*p++ = '-';
+	if (mode & S_IWUSR)
+		*p++ = 'w';
+	else
+		*p++ = '-';
+	switch (mode & (S_IXUSR | S_ISUID)) {
+	case 0:
+		*p++ = '-';
+		break;
+	case S_IXUSR:
+		*p++ = 'x';
+		break;
+	case S_ISUID:
+		*p++ = 'S';
+		break;
+	case S_IXUSR | S_ISUID:
+		*p++ = 's';
+		break;
+	}
+	/* group */
+	if (mode & S_IRGRP)
+		*p++ = 'r';
+	else
+		*p++ = '-';
+	if (mode & S_IWGRP)
+		*p++ = 'w';
+	else
+		*p++ = '-';
+	switch (mode & (S_IXGRP | S_ISGID)) {
+	case 0:
+		*p++ = '-';
+		break;
+	case S_IXGRP:
+		*p++ = 'x';
+		break;
+	case S_ISGID:
+		*p++ = 'S';
+		break;
+	case S_IXGRP | S_ISGID:
+		*p++ = 's';
+		break;
+	}
+	/* other */
+	if (mode & S_IROTH)
+		*p++ = 'r';
+	else
+		*p++ = '-';
+	if (mode & S_IWOTH)
+		*p++ = 'w';
+	else
+		*p++ = '-';
+#ifdef S_ISVTX
+	switch (mode & (S_IXOTH | S_ISVTX)) {
+#else
+	switch (mode & (S_IXOTH)) {
+#endif
+	case 0:
+		*p++ = '-';
+		break;
+	case S_IXOTH:
+		*p++ = 'x';
+		break;
+#ifdef S_ISVTX
+	case S_ISVTX:
+		*p++ = 'T';
+		break;
+	case S_IXOTH | S_ISVTX:
+		*p++ = 't';
+		break;
+#endif
+	}
+	*p++ = ' ';		/* will be a '+' if ACL's implemented */
+	*p = '\0';
+}
diff --git a/src/kmk/kmkbuiltin/test.c b/src/kmk/kmkbuiltin/test.c
new file mode 100644
index 0000000..259f223
--- /dev/null
+++ b/src/kmk/kmkbuiltin/test.c
@@ -0,0 +1,869 @@
+/* $NetBSD: test.c,v 1.33 2007/06/24 18:54:58 christos Exp $ */
+
+/*
+ * test(1); version 7-like  --  author Erik Baalbergen
+ * modified by Eric Gisin to be used as built-in.
+ * modified by Arnold Robbins to add SVR3 compatibility
+ * (-x -c -b -p -u -g -k) plus Korn's -L -nt -ot -ef and new -S (socket).
+ * modified by J.T. Conklin for NetBSD.
+ *
+ * This program is in the Public Domain.
+ */
+
+/*#include <sys/cdefs.h>
+#ifndef lint
+__RCSID("$NetBSD: test.c,v 1.33 2007/06/24 18:54:58 christos Exp $");
+#endif*/
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "config.h"
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <ctype.h>
+#include "err.h"
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef _MSC_VER
+# include <direct.h>
+# include <io.h>
+# include <process.h>
+# include "mscfakes.h"
+# include "quote_argv.h"
+#else
+# include <unistd.h>
+#endif
+#include <stdarg.h>
+#include <sys/stat.h>
+
+#include "kmkbuiltin.h"
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+#ifndef __arraycount
+# define __arraycount(a) 	( sizeof(a) / sizeof(a[0]) )
+#endif
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+/* test(1) accepts the following grammar:
+	oexpr	::= aexpr | aexpr "-o" oexpr ;
+	aexpr	::= nexpr | nexpr "-a" aexpr ;
+	nexpr	::= primary | "!" primary
+	primary	::= unary-operator operand
+		| operand binary-operator operand
+		| operand
+		| "(" oexpr ")"
+		;
+	unary-operator ::= "-r"|"-w"|"-x"|"-f"|"-d"|"-c"|"-b"|"-p"|
+		"-u"|"-g"|"-k"|"-s"|"-t"|"-z"|"-n"|"-o"|"-O"|"-G"|"-L"|"-S";
+
+	binary-operator ::= "="|"!="|"-eq"|"-ne"|"-ge"|"-gt"|"-le"|"-lt"|
+			"-nt"|"-ot"|"-ef";
+	operand ::= <any legal UNIX file name>
+*/
+
+enum token {
+	EOI,
+	FILRD,
+	FILWR,
+	FILEX,
+	FILEXIST,
+	FILREG,
+	FILDIR,
+	FILCDEV,
+	FILBDEV,
+	FILFIFO,
+	FILSOCK,
+	FILSYM,
+	FILGZ,
+	FILTT,
+	FILSUID,
+	FILSGID,
+	FILSTCK,
+	FILNT,
+	FILOT,
+	FILEQ,
+	FILUID,
+	FILGID,
+	STREZ,
+	STRNZ,
+	STREQ,
+	STRNE,
+	STRLT,
+	STRGT,
+	INTEQ,
+	INTNE,
+	INTGE,
+	INTGT,
+	INTLE,
+	INTLT,
+	UNOT,
+	BAND,
+	BOR,
+	LPAREN,
+	RPAREN,
+	OPERAND
+};
+
+enum token_types {
+	UNOP,
+	BINOP,
+	BUNOP,
+	BBINOP,
+	PAREN
+};
+
+struct t_op {
+	const char *op_text;
+	short op_num, op_type;
+};
+
+/** kmk_test instance data.   */
+typedef struct TESTINSTANCE
+{
+    PKMKBUILTINCTX pCtx;
+    char **t_wp;
+    struct t_op const *t_wp_op;
+} TESTINSTANCE;
+typedef TESTINSTANCE *PTESTINSTANCE;
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static const struct t_op cop[] = {
+	{"!",	UNOT,	BUNOP},
+	{"(",	LPAREN,	PAREN},
+	{")",	RPAREN,	PAREN},
+	{"<",	STRLT,	BINOP},
+	{"=",	STREQ,	BINOP},
+	{">",	STRGT,	BINOP},
+};
+
+static const struct t_op cop2[] = {
+	{"!=",	STRNE,	BINOP},
+};
+
+static const struct t_op mop3[] = {
+	{"ef",	FILEQ,	BINOP},
+	{"eq",	INTEQ,	BINOP},
+	{"ge",	INTGE,	BINOP},
+	{"gt",	INTGT,	BINOP},
+	{"le",	INTLE,	BINOP},
+	{"lt",	INTLT,	BINOP},
+	{"ne",	INTNE,	BINOP},
+	{"nt",	FILNT,	BINOP},
+	{"ot",	FILOT,	BINOP},
+};
+
+static const struct t_op mop2[] = {
+	{"G",	FILGID,	UNOP},
+	{"L",	FILSYM,	UNOP},
+	{"O",	FILUID,	UNOP},
+	{"S",	FILSOCK,UNOP},
+	{"a",	BAND,	BBINOP},
+	{"b",	FILBDEV,UNOP},
+	{"c",	FILCDEV,UNOP},
+	{"d",	FILDIR,	UNOP},
+	{"e",	FILEXIST,UNOP},
+	{"f",	FILREG,	UNOP},
+	{"g",	FILSGID,UNOP},
+	{"h",	FILSYM,	UNOP},		/* for backwards compat */
+	{"k",	FILSTCK,UNOP},
+	{"n",	STRNZ,	UNOP},
+	{"o",	BOR,	BBINOP},
+	{"p",	FILFIFO,UNOP},
+	{"r",	FILRD,	UNOP},
+	{"s",	FILGZ,	UNOP},
+	{"t",	FILTT,	UNOP},
+	{"u",	FILSUID,UNOP},
+	{"w",	FILWR,	UNOP},
+	{"x",	FILEX,	UNOP},
+	{"z",	STREZ,	UNOP},
+};
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+static int syntax(PTESTINSTANCE, const char *, const char *);
+static int oexpr(PTESTINSTANCE, enum token);
+static int aexpr(PTESTINSTANCE, enum token);
+static int nexpr(PTESTINSTANCE, enum token);
+static int primary(PTESTINSTANCE, enum token);
+static int binop(PTESTINSTANCE);
+static int test_access(struct stat *, mode_t);
+static int filstat(char *, enum token);
+static enum token t_lex(PTESTINSTANCE, char *);
+static int isoperand(PTESTINSTANCE);
+static int getn(PTESTINSTANCE, const char *);
+static int newerf(const char *, const char *);
+static int olderf(const char *, const char *);
+static int equalf(const char *, const char *);
+static int usage(PKMKBUILTINCTX, int);
+
+#if !defined(KMK_BUILTIN_STANDALONE) || defined(ELECTRIC_HEAP)
+extern void *xmalloc(unsigned int);
+#else
+extern void *xmalloc(unsigned int sz)
+{
+    void *p = malloc(sz);
+    if (!p) {
+	    fprintf(stderr, "kmk_test: malloc(%u) failed\n", sz);
+	    exit(1);
+    }
+    return p;
+}
+#endif
+
+
+
+int kmk_builtin_test(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx, char ***ppapszArgvSpawn)
+{
+	TESTINSTANCE This;
+	int res;
+	char **argv_spawn;
+	int i;
+
+	This.pCtx = pCtx;
+	This.t_wp = NULL;
+	This.t_wp_op = NULL;
+
+	/* look for the '--', '--help' and '--version'. */
+	argv_spawn = NULL;
+	for (i = 1; i < argc; i++) {
+		if (   argv[i][0] == '-'
+		    && argv[i][1] == '-') {
+    			if (argv[i][2] == '\0') {
+				argc = i;
+				argv[i] = NULL;
+
+                                /* skip blank arguments (happens inside kmk) */
+                                while (argv[++i]) {
+                                        const char *psz = argv[i];
+                                        while (isspace(*psz))
+                                                psz++;
+                                        if (*psz)
+                                                break;
+                                }
+				argv_spawn = &argv[i];
+				break;
+			}
+			if (!strcmp(argv[i], "--help"))
+				return usage(pCtx, 0);
+			if (!strcmp(argv[i], "--version"))
+				return kbuild_version(argv[0]);
+		}
+	}
+
+	/* are we '['? then check for ']'. */
+	if (strcmp(argv[0], "[") == 0) { /** @todo should skip the path in g_progname */
+		if (strcmp(argv[--argc], "]"))
+			return errx(pCtx, 1, "missing ]");
+		argv[argc] = NULL;
+	}
+
+	/* evaluate the expression */
+	if (argc < 2)
+		res = 1;
+	else {
+		This.t_wp = &argv[1];
+		res = oexpr(&This, t_lex(&This, *This.t_wp));
+		if (res != -42 && *This.t_wp != NULL && *++This.t_wp != NULL)
+			res = syntax(&This, *This.t_wp, "unexpected operator");
+		if (res == -42)
+			return 1; /* don't mix syntax errors with the argv_spawn ignore */
+		res = !res;
+	}
+
+	/* anything to execute on success? */
+	if (argv_spawn) {
+		if (res != 0 || !argv_spawn[0])
+			res = 0; /* ignored */
+		else {
+#ifdef KMK_BUILTIN_STANDALONE
+			/* try exec the specified process */
+# if defined(_MSC_VER)
+			int argc_spawn = 0;
+			while (argv_spawn[argc_spawn])
+				argc_spawn++;
+			if (quote_argv(argc, argv_spawn, 0 /*fWatcomBrainDamage*/, 0/*fFreeOrLeak*/) != -1)
+			{
+			    res = _spawnvp(_P_WAIT, argv_spawn[0], argv_spawn);
+			    if (res == -1)
+				res = err(pCtx, 1, "_spawnvp(_P_WAIT,%s,..)", argv_spawn[0]);
+			}
+			else
+			    res = err(pCtx, 1, "quote_argv: out of memory");
+# else
+			execvp(argv_spawn[0], argv_spawn);
+			res = err(pCtx, 1, "execvp(%s,..)", argv_spawn[0]);
+# endif
+#else /* in kmk */
+			/* let job.c spawn the process, make a job.c style argv_spawn copy. */
+			char *cur, **argv_new;
+			size_t sz = 0;
+			int argc_new = 0;
+			while (argv_spawn[argc_new]) {
+    				size_t len = strlen(argv_spawn[argc_new]) + 1;
+				sz += (len + sizeof(void *) - 1) & ~(sizeof(void *) - 1);
+				argc_new++;
+			}
+
+			argv_new = xmalloc((argc_new + 1) * sizeof(char *));
+			cur = xmalloc(sz);
+			for (i = 0; i < argc_new; i++) {
+				size_t len = strlen(argv_spawn[i]) + 1;
+				argv_new[i] = memcpy(cur, argv_spawn[i], len);
+				cur += (len + sizeof(void *) - 1) & ~(sizeof(void *) - 1);
+			}
+			argv_new[i] = NULL;
+
+			*ppapszArgvSpawn = argv_new;
+			res = 0;
+#endif /* in kmk */
+		}
+	}
+
+	return res;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_test", NULL };
+    return kmk_builtin_test(argc, argv, envp, &Ctx, NULL);
+}
+#endif
+
+static int
+syntax(PTESTINSTANCE pThis, const char *op, const char *msg)
+{
+
+	if (op && *op)
+		errx(pThis->pCtx, 1, "%s: %s", op, msg);
+	else
+		errx(pThis->pCtx, 1, "%s", msg);
+	return -42;
+}
+
+static int
+oexpr(PTESTINSTANCE pThis, enum token n)
+{
+	int res;
+
+	res = aexpr(pThis, n);
+	if (res == -42 || *pThis->t_wp == NULL)
+		return res;
+	if (t_lex(pThis, *++(pThis->t_wp)) == BOR) {
+		int res2 = oexpr(pThis, t_lex(pThis, *++(pThis->t_wp)));
+		return res2 != -42 ? res2 || res : res2;
+	}
+	pThis->t_wp--;
+	return res;
+}
+
+static int
+aexpr(PTESTINSTANCE pThis, enum token n)
+{
+	int res;
+
+	res = nexpr(pThis, n);
+	if (res == -42 || *pThis->t_wp == NULL)
+		return res;
+	if (t_lex(pThis, *++(pThis->t_wp)) == BAND) {
+		int res2 = aexpr(pThis, t_lex(pThis, *++(pThis->t_wp)));
+		return res2 != -42 ? res2 && res : res2;
+	}
+	pThis->t_wp--;
+	return res;
+}
+
+static int
+nexpr(PTESTINSTANCE pThis, enum token n)
+{
+	if (n == UNOT) {
+		int res = nexpr(pThis, t_lex(pThis, *++(pThis->t_wp)));
+		return res != -42 ? !res : res;
+	}
+	return primary(pThis, n);
+}
+
+static int
+primary(PTESTINSTANCE pThis, enum token n)
+{
+	enum token nn;
+	int res;
+
+	if (n == EOI)
+		return 0;		/* missing expression */
+	if (n == LPAREN) {
+		if ((nn = t_lex(pThis, *++(pThis->t_wp))) == RPAREN)
+			return 0;	/* missing expression */
+		res = oexpr(pThis, nn);
+		if (res != -42 && t_lex(pThis, *++(pThis->t_wp)) != RPAREN)
+			return syntax(pThis, NULL, "closing paren expected");
+		return res;
+	}
+	if (pThis->t_wp_op && pThis->t_wp_op->op_type == UNOP) {
+		/* unary expression */
+		if (*++(pThis->t_wp) == NULL)
+			return syntax(pThis, pThis->t_wp_op->op_text, "argument expected");
+		switch (n) {
+		case STREZ:
+			return strlen(*pThis->t_wp) == 0;
+		case STRNZ:
+			return strlen(*pThis->t_wp) != 0;
+		case FILTT:
+			return isatty(getn(pThis, *pThis->t_wp));
+		default:
+			return filstat(*pThis->t_wp, n);
+		}
+	}
+
+	if (t_lex(pThis, pThis->t_wp[1]), pThis->t_wp_op && pThis->t_wp_op->op_type == BINOP) {
+		return binop(pThis);
+	}
+
+	return strlen(*pThis->t_wp) > 0;
+}
+
+static int
+binop(PTESTINSTANCE pThis)
+{
+	const char *opnd1, *opnd2;
+	struct t_op const *op;
+
+	opnd1 = *pThis->t_wp;
+	(void) t_lex(pThis, *++(pThis->t_wp));
+	op = pThis->t_wp_op;
+
+	if ((opnd2 = *++(pThis->t_wp)) == NULL)
+		return syntax(pThis, op->op_text, "argument expected");
+
+	switch (op->op_num) {
+	case STREQ:
+		return strcmp(opnd1, opnd2) == 0;
+	case STRNE:
+		return strcmp(opnd1, opnd2) != 0;
+	case STRLT:
+		return strcmp(opnd1, opnd2) < 0;
+	case STRGT:
+		return strcmp(opnd1, opnd2) > 0;
+	case INTEQ:
+		return getn(pThis, opnd1) == getn(pThis, opnd2);
+	case INTNE:
+		return getn(pThis, opnd1) != getn(pThis, opnd2);
+	case INTGE:
+		return getn(pThis, opnd1) >= getn(pThis, opnd2);
+	case INTGT:
+		return getn(pThis, opnd1) > getn(pThis, opnd2);
+	case INTLE:
+		return getn(pThis, opnd1) <= getn(pThis, opnd2);
+	case INTLT:
+		return getn(pThis, opnd1) < getn(pThis, opnd2);
+	case FILNT:
+		return newerf(opnd1, opnd2);
+	case FILOT:
+		return olderf(opnd1, opnd2);
+	case FILEQ:
+		return equalf(opnd1, opnd2);
+	default:
+		abort();
+		/* NOTREACHED */
+#ifdef _MSC_VER
+		return -42;
+#endif
+	}
+}
+
+/*
+ * The manual, and IEEE POSIX 1003.2, suggests this should check the mode bits,
+ * not use access():
+ *
+ *	True shall indicate only that the write flag is on.  The file is not
+ *	writable on a read-only file system even if this test indicates true.
+ *
+ * Unfortunately IEEE POSIX 1003.1-2001, as quoted in SuSv3, says only:
+ *
+ *	True shall indicate that permission to read from file will be granted,
+ *	as defined in "File Read, Write, and Creation".
+ *
+ * and that section says:
+ *
+ *	When a file is to be read or written, the file shall be opened with an
+ *	access mode corresponding to the operation to be performed.  If file
+ *	access permissions deny access, the requested operation shall fail.
+ *
+ * and of course access permissions are described as one might expect:
+ *
+ *     * If a process has the appropriate privilege:
+ *
+ *        * If read, write, or directory search permission is requested,
+ *          access shall be granted.
+ *
+ *        * If execute permission is requested, access shall be granted if
+ *          execute permission is granted to at least one user by the file
+ *          permission bits or by an alternate access control mechanism;
+ *          otherwise, access shall be denied.
+ *
+ *   * Otherwise:
+ *
+ *        * The file permission bits of a file contain read, write, and
+ *          execute/search permissions for the file owner class, file group
+ *          class, and file other class.
+ *
+ *        * Access shall be granted if an alternate access control mechanism
+ *          is not enabled and the requested access permission bit is set for
+ *          the class (file owner class, file group class, or file other class)
+ *          to which the process belongs, or if an alternate access control
+ *          mechanism is enabled and it allows the requested access; otherwise,
+ *          access shall be denied.
+ *
+ * and when I first read this I thought:  surely we can't go about using
+ * open(O_WRONLY) to try this test!  However the POSIX 1003.1-2001 Rationale
+ * section for test does in fact say:
+ *
+ *	On historical BSD systems, test -w directory always returned false
+ *	because test tried to open the directory for writing, which always
+ *	fails.
+ *
+ * and indeed this is in fact true for Seventh Edition UNIX, UNIX 32V, and UNIX
+ * System III, and thus presumably also for BSD up to and including 4.3.
+ *
+ * Secondly I remembered why using open() and/or access() are bogus.  They
+ * don't work right for detecting read and write permissions bits when called
+ * by root.
+ *
+ * Interestingly the 'test' in 4.4BSD was closer to correct (as per
+ * 1003.2-1992) and it was implemented efficiently with stat() instead of
+ * open().
+ *
+ * This was apparently broken in NetBSD around about 1994/06/30 when the old
+ * 4.4BSD implementation was replaced with a (arguably much better coded)
+ * implementation derived from pdksh.
+ *
+ * Note that modern pdksh is yet different again, but still not correct, at
+ * least not w.r.t. 1003.2-1992.
+ *
+ * As I think more about it and read more of the related IEEE docs I don't like
+ * that wording about 'test -r' and 'test -w' in 1003.1-2001 at all.  I very
+ * much prefer the original wording in 1003.2-1992.  It is much more useful,
+ * and so that's what I've implemented.
+ *
+ * (Note that a strictly conforming implementation of 1003.1-2001 is in fact
+ * totally useless for the case in question since its 'test -w' and 'test -r'
+ * can never fail for root for any existing files, i.e. files for which 'test
+ * -e' succeeds.)
+ *
+ * The rationale for 1003.1-2001 suggests that the wording was "clarified" in
+ * 1003.1-2001 to align with the 1003.2b draft.  1003.2b Draft 12 (July 1999),
+ * which is the latest copy I have, does carry the same suggested wording as is
+ * in 1003.1-2001, with its rationale saying:
+ *
+ * 	This change is a clarification and is the result of interpretation
+ * 	request PASC 1003.2-92 #23 submitted for IEEE Std 1003.2-1992.
+ *
+ * That interpretation can be found here:
+ *
+ *   http://www.pasc.org/interps/unofficial/db/p1003.2/pasc-1003.2-23.html
+ *
+ * Not terribly helpful, unfortunately.  I wonder who that fence sitter was.
+ *
+ * Worse, IMVNSHO, I think the authors of 1003.2b-D12 have mis-interpreted the
+ * PASC interpretation and appear to be gone against at least one widely used
+ * implementation (namely 4.4BSD).  The problem is that for file access by root
+ * this means that if test '-r' and '-w' are to behave as if open() were called
+ * then there's no way for a shell script running as root to check if a file
+ * has certain access bits set other than by the grotty means of interpreting
+ * the output of 'ls -l'.  This was widely considered to be a bug in V7's
+ * "test" and is, I believe, one of the reasons why direct use of access() was
+ * avoided in some more recent implementations!
+ *
+ * I have always interpreted '-r' to match '-w' and '-x' as per the original
+ * wording in 1003.2-1992, not the other way around.  I think 1003.2b goes much
+ * too far the wrong way without any valid rationale and that it's best if we
+ * stick with 1003.2-1992 and test the flags, and not mimic the behaviour of
+ * open() since we already know very well how it will work -- existance of the
+ * file is all that matters to open() for root.
+ *
+ * Unfortunately the SVID is no help at all (which is, I guess, partly why
+ * we're in this mess in the first place :-).
+ *
+ * The SysV implementation (at least in the 'test' builtin in /bin/sh) does use
+ * access(name, 2) even though it also goes to much greater lengths for '-x'
+ * matching the 1003.2-1992 definition (which is no doubt where that definition
+ * came from).
+ *
+ * The ksh93 implementation uses access() for '-r' and '-w' if
+ * (euid==uid&&egid==gid), but uses st_mode for '-x' iff running as root.
+ * i.e. it does strictly conform to 1003.1-2001 (and presumably 1003.2b).
+ */
+static int
+test_access(struct stat *sp, mode_t stmode)
+{
+#ifdef _MSC_VER
+	/* just pretend to be root for now. */
+	stmode = (stmode << 6) | (stmode << 3) | stmode;
+	return !!(sp->st_mode & stmode);
+#else
+	gid_t *groups;
+	register int n;
+	uid_t euid;
+	int maxgroups;
+
+	/*
+	 * I suppose we could use access() if not running as root and if we are
+	 * running with ((euid == uid) && (egid == gid)), but we've already
+	 * done the stat() so we might as well just test the permissions
+	 * directly instead of asking the kernel to do it....
+	 */
+	euid = geteuid();
+	if (euid == 0)				/* any bit is good enough */
+		stmode = (stmode << 6) | (stmode << 3) | stmode;
+ 	else if (sp->st_uid == euid)
+		stmode <<= 6;
+	else if (sp->st_gid == getegid())
+		stmode <<= 3;
+	else {
+		/* XXX stolen almost verbatim from ksh93.... */
+		/* on some systems you can be in several groups */
+		if ((maxgroups = getgroups(0, NULL)) <= 0)
+			maxgroups = NGROUPS_MAX;	/* pre-POSIX system? */
+		groups = xmalloc((maxgroups + 1) * sizeof(gid_t));
+		n = getgroups(maxgroups, groups);
+		while (--n >= 0) {
+			if (groups[n] == sp->st_gid) {
+				stmode <<= 3;
+				break;
+			}
+		}
+		free(groups);
+	}
+
+	return !!(sp->st_mode & stmode);
+#endif
+}
+
+static int
+filstat(char *nm, enum token mode)
+{
+	struct stat s;
+
+	if (mode == FILSYM ? lstat(nm, &s) : stat(nm, &s))
+		return 0;
+
+	switch (mode) {
+	case FILRD:
+		return test_access(&s, S_IROTH);
+	case FILWR:
+		return test_access(&s, S_IWOTH);
+	case FILEX:
+		return test_access(&s, S_IXOTH);
+	case FILEXIST:
+		return 1; /* the successful lstat()/stat() is good enough */
+	case FILREG:
+		return S_ISREG(s.st_mode);
+	case FILDIR:
+		return S_ISDIR(s.st_mode);
+	case FILCDEV:
+#ifdef S_ISCHR
+		return S_ISCHR(s.st_mode);
+#else
+		return 0;
+#endif
+	case FILBDEV:
+#ifdef S_ISBLK
+		return S_ISBLK(s.st_mode);
+#else
+		return 0;
+#endif
+	case FILFIFO:
+#ifdef S_ISFIFO
+		return S_ISFIFO(s.st_mode);
+#else
+		return 0;
+#endif
+	case FILSOCK:
+#ifdef S_ISSOCK
+		return S_ISSOCK(s.st_mode);
+#else
+		return 0;
+#endif
+	case FILSYM:
+#ifdef S_ISLNK
+		return S_ISLNK(s.st_mode);
+#else
+		return 0;
+#endif
+	case FILSUID:
+		return (s.st_mode & S_ISUID) != 0;
+	case FILSGID:
+		return (s.st_mode & S_ISGID) != 0;
+	case FILSTCK:
+#ifdef S_ISVTX
+		return (s.st_mode & S_ISVTX) != 0;
+#else
+		return 0;
+#endif
+	case FILGZ:
+		return s.st_size > (off_t)0;
+	case FILUID:
+		return s.st_uid == geteuid();
+	case FILGID:
+		return s.st_gid == getegid();
+	default:
+		return 1;
+	}
+}
+
+#define VTOC(x)	(const unsigned char *)((const struct t_op *)x)->op_text
+
+static int
+compare1(const void *va, const void *vb)
+{
+	const unsigned char *a = va;
+	const unsigned char *b = VTOC(vb);
+
+	return a[0] - b[0];
+}
+
+static int
+compare2(const void *va, const void *vb)
+{
+	const unsigned char *a = va;
+	const unsigned char *b = VTOC(vb);
+	int z = a[0] - b[0];
+
+	return z ? z : (a[1] - b[1]);
+}
+
+static struct t_op const *
+findop(const char *s)
+{
+	if (s[0] == '-') {
+		if (s[1] == '\0')
+			return NULL;
+		if (s[2] == '\0')
+			return bsearch(s + 1, mop2, __arraycount(mop2), sizeof(*mop2), compare1);
+		else if (s[3] != '\0')
+			return NULL;
+		else
+			return bsearch(s + 1, mop3, __arraycount(mop3), sizeof(*mop3), compare2);
+	} else {
+		if (s[1] == '\0')
+			return bsearch(s, cop, __arraycount(cop), sizeof(*cop), compare1);
+		else if (strcmp(s, cop2[0].op_text) == 0)
+			return cop2;
+		else
+			return NULL;
+	}
+}
+
+static enum token
+t_lex(PTESTINSTANCE pThis, char *s)
+{
+	struct t_op const *op;
+
+	if (s == NULL) {
+		pThis->t_wp_op = NULL;
+		return EOI;
+	}
+
+	if ((op = findop(s)) != NULL) {
+		if (!((op->op_type == UNOP && isoperand(pThis)) ||
+		    (op->op_num == LPAREN && *(pThis->t_wp+1) == 0))) {
+			pThis->t_wp_op = op;
+			return op->op_num;
+		}
+	}
+	pThis->t_wp_op = NULL;
+	return OPERAND;
+}
+
+static int
+isoperand(PTESTINSTANCE pThis)
+{
+	struct t_op const *op;
+	char *s, *t;
+
+	if ((s  = *(pThis->t_wp+1)) == 0)
+		return 1;
+	if ((t = *(pThis->t_wp+2)) == 0)
+		return 0;
+	if ((op = findop(s)) != NULL)
+		return op->op_type == BINOP && (t[0] != ')' || t[1] != '\0');
+	return 0;
+}
+
+/* atoi with error detection */
+static int
+getn(PTESTINSTANCE pThis, const char *s)
+{
+	char *p;
+	long r;
+
+	errno = 0;
+	r = strtol(s, &p, 10);
+
+	if (errno != 0)
+	      return errx(pThis->pCtx, -42, "%s: out of range", s);
+
+	while (isspace((unsigned char)*p))
+	      p++;
+
+	if (*p)
+	      return errx(pThis->pCtx, -42, "%s: bad number", s);
+
+	return (int) r;
+}
+
+static int
+newerf(const char *f1, const char *f2)
+{
+	struct stat b1, b2;
+
+	return (stat(f1, &b1) == 0 &&
+		stat(f2, &b2) == 0 &&
+		b1.st_mtime > b2.st_mtime);
+}
+
+static int
+olderf(const char *f1, const char *f2)
+{
+	struct stat b1, b2;
+
+	return (stat(f1, &b1) == 0 &&
+		stat(f2, &b2) == 0 &&
+		b1.st_mtime < b2.st_mtime);
+}
+
+static int
+equalf(const char *f1, const char *f2)
+{
+	struct stat b1, b2;
+
+	return (stat(f1, &b1) == 0 &&
+		stat(f2, &b2) == 0 &&
+		b1.st_dev == b2.st_dev &&
+		b1.st_ino == b2.st_ino);
+}
+
+static int
+usage(PKMKBUILTINCTX pCtx, int fIsErr)
+{
+	kmk_builtin_ctx_printf(pCtx, fIsErr, "usage: %s expression [-- <prog> [args]]\n", pCtx->pszProgName);
+	return 0; /* only used in --help. */
+}
+
diff --git a/src/kmk/kmkbuiltin/touch.c b/src/kmk/kmkbuiltin/touch.c
new file mode 100644
index 0000000..046b0d3
--- /dev/null
+++ b/src/kmk/kmkbuiltin/touch.c
@@ -0,0 +1,952 @@
+/* $Id: touch.c 3282 2019-01-05 00:57:52Z bird $ */
+/** @file
+ * kmk_touch - Simple touch implementation.
+ */
+
+/*
+ * Copyright (c) 2017 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "makeint.h"
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#if defined(_MSC_VER)
+# include <ctype.h>
+# include <io.h>
+# include <sys/timeb.h>
+#else
+# include <unistd.h>
+#endif
+
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+#include "err.h"
+#include "kbuild_version.h"
+#include "kmkbuiltin.h"
+
+#ifdef _MSC_VER
+# include "nt/ntstat.h"
+# undef FILE_TIMESTAMP_HI_RES
+# define FILE_TIMESTAMP_HI_RES 1
+#endif
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/** The program name to use in message. */
+#ifdef KMK
+# define TOUCH_NAME  "kmk_builtin_touch"
+#else
+# define TOUCH_NAME  "kmk_touch"
+#endif
+/** Converts a two digit decimal field to a number. */
+#define TWO_CHARS_TO_INT(chHigh, chLow)  ( ((unsigned)(chHigh) - (unsigned)'0') * 10 + ((unsigned)(chLow) - (unsigned)'0') )
+/** Checks an alleged digit. */
+#define IS_DIGIT(chDigit, uMax)          ( ((unsigned)(chDigit) - (unsigned)'0') <= (unsigned)(uMax) )
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef enum KMKTOUCHTARGET
+{
+    kTouchAccessAndModify,
+    kTouchAccessOnly,
+    kTouchModifyOnly
+} KMKTOUCHTARGET;
+
+typedef enum KMKTOUCHACTION
+{
+    kTouchActionCurrent,
+    kTouchActionSet,
+    kTouchActionAdjust
+} KMKTOUCHACTION;
+
+
+typedef struct KMKTOUCHOPTS
+{
+    /** Command execution context. */
+    PKMKBUILTINCTX  pCtx;
+    /** What timestamps to modify on the files. */
+    KMKTOUCHTARGET  enmWhatToTouch;
+    /** How to update the time. */
+    KMKTOUCHACTION  enmAction;
+    /** Whether to create files (K_TRUE) or ignore missing (K_FALSE). */
+    KBOOL           fCreate;
+    /** Whether to dereference files. */
+    KBOOL           fDereference;
+    /** The new access time value. */
+    struct timeval  NewATime;
+    /** The new modified time value. */
+    struct timeval  NewMTime;
+
+    /** Number of files. */
+    int             cFiles;
+    /** The specified files.   */
+    char          **papszFiles;
+} KMKTOUCHOPTS;
+typedef KMKTOUCHOPTS *PKMKTOUCHOPTS;
+
+
+static int touch_usage(void)
+{
+    fputs("Usage: " TOUCH_NAME " [options] [MMDDhhmm[YY]] <file1> [.. [fileN]]\n"
+          "\n"
+          "Options:\n"
+          "  -A [-][[hh]mm]SS, --adjust=[-][[hh]mm]SS\n"
+          "    Adjust timestamps by given delta.\n"
+          "  -a, --time=atime, --time=access\n"
+          "    Only change the accessed timestamp.\n"
+          "  -c, --no-create\n"
+          "    Ignore missing files and don't create them. (default create empty file)\n"
+          "  -d YYYY-MM-DDThh:mm:SS[.frac][tz], --date=YYYY-MM-DDThh:mm:SS[.frac][tz]\n"
+          "    Set the timestamps to the given one.\n"
+          "  -f\n"
+          "    Ignored for compatbility reasons.\n"
+          "  -h, --no-dereference\n"
+          "    Don't follow links, touch links. (Not applicable to -r.)\n"
+          "  -m, --time=mtime, --time=modify\n"
+          "    Only changed the modified timestamp.\n"
+          "  -r <file>, --reference=<file>\n"
+          "    Take the timestamps from <file>.\n"
+          "  -t [[CC]YY]MMDDhhmm[.SS]\n"
+          "    Set the timestamps to the given one.\n"
+          "\n"
+          "Note. For compatibility reasons the first file can be taken to be a 8 or 10\n"
+          "      character long timestamp if it matches the given pattern and none of\n"
+          "      the -A, -d, --date, -r, --reference, or -t options are given.  So, use\n"
+          "      absolute or relative paths when specifying more than one file.\n"
+          , stdout);
+    return 0;
+}
+
+
+#if K_OS == K_OS_SOLARIS
+/**
+ * Solaris doesn't have lutimes because System V doesn't believe in stuff like file modes on symbolic links.
+ */
+static int lutimes(const char *pszFile, struct timeval aTimes[2])
+{
+    struct stat Stat;
+    if (stat(pszFile, &Stat) != -1)
+    {
+        if (!S_ISLNK(Stat.st_mode))
+            return utimes(pszFile, aTimes);
+        return 0;
+    }
+    return -1;
+}
+#endif 
+
+
+/**
+ * Parses adjustment value: [-][[hh]mm]SS
+ */
+static int touch_parse_adjust(PKMKBUILTINCTX pCtx, const char *pszValue, int *piAdjustValue)
+{
+    const char * const  pszInValue = pszValue;
+    size_t              cchValue  = strlen(pszValue);
+    KBOOL               fNegative = K_FALSE;
+
+    /* Deal with negativity */
+    if (pszValue[0] == '-')
+    {
+        fNegative = K_TRUE;
+        pszValue++;
+        cchValue--;
+    }
+
+    /* Validate and convert. */
+    *piAdjustValue = 0;
+    switch (cchValue)
+    {
+        case 6:
+            if (   !IS_DIGIT(pszValue[0], 9)
+                || !IS_DIGIT(pszValue[0], 9))
+                return errx(pCtx, 2, "Malformed hour part of -A value: %s", pszInValue);
+            *piAdjustValue = TWO_CHARS_TO_INT(pszValue[0], pszValue[1]) * 60 * 60;
+            /* fall thru */
+        case 4:
+            if (   !IS_DIGIT(pszValue[cchValue - 4], 9) /* don't bother limit to 60 minutes */
+                || !IS_DIGIT(pszValue[cchValue - 3], 9))
+                return errx(pCtx, 2, "Malformed minute part of -A value: %s", pszInValue);
+            *piAdjustValue += TWO_CHARS_TO_INT(pszValue[cchValue - 4], pszValue[cchValue - 3]) * 60;
+            /* fall thru */
+        case 2:
+            if (   !IS_DIGIT(pszValue[cchValue - 2], 9) /* don't bother limit to 60 seconds */
+                || !IS_DIGIT(pszValue[cchValue - 1], 9))
+                return errx(pCtx, 2, "Malformed second part of -A value: %s", pszInValue);
+            *piAdjustValue += TWO_CHARS_TO_INT(pszValue[cchValue - 2], pszValue[cchValue - 1]);
+            break;
+
+        default:
+            return errx(pCtx, 2, "Invalid -A value (length): %s", pszInValue);
+    }
+
+    /* Apply negativity. */
+    if (fNegative)
+        *piAdjustValue = -*piAdjustValue;
+
+    return 0;
+}
+
+
+/**
+ * Parse -d timestamp: YYYY-MM-DDThh:mm:SS[.frac][tz]
+ */
+static int touch_parse_d_ts(PKMKBUILTINCTX pCtx, const char *pszTs, struct timeval *pDst)
+{
+    const char * const  pszTsIn = pszTs;
+    struct tm           ExpTime;
+
+    /*
+     * Validate and parse the timestamp into the tm structure.
+     */
+    memset(&ExpTime, 0, sizeof(ExpTime));
+
+    /* year */
+    if (   !IS_DIGIT(pszTs[0], 9)
+        || !IS_DIGIT(pszTs[1], 9)
+        || !IS_DIGIT(pszTs[2], 9)
+        || !IS_DIGIT(pszTs[3], 9)
+        || pszTs[4] != '-')
+        return errx(pCtx, 2, "Malformed timestamp '%s' given to -d: expected to start with 4 digit year followed by a dash",
+                    pszTsIn);
+    ExpTime.tm_year = TWO_CHARS_TO_INT(pszTs[0], pszTs[1]) * 100
+                    + TWO_CHARS_TO_INT(pszTs[2], pszTs[3])
+                    - 1900;
+    pszTs += 5;
+
+    /* month */
+    if (   !IS_DIGIT(pszTs[0], 1)
+        || !IS_DIGIT(pszTs[1], 9)
+        || pszTs[2] != '-')
+        return errx(pCtx, 2, "Malformed timestamp '%s' given to -d: expected to two digit month at position 6 followed by a dash",
+                    pszTsIn);
+    ExpTime.tm_mon = TWO_CHARS_TO_INT(pszTs[0], pszTs[1]) - 1;
+    pszTs += 3;
+
+    /* day */
+    if (   !IS_DIGIT(pszTs[0], 3)
+        || !IS_DIGIT(pszTs[1], 9)
+        || (pszTs[2] != 'T' && pszTs[2] != 't' && pszTs[2] != ' ') )
+        return errx(pCtx, 2, "Malformed timestamp '%s' given to -d: expected to two digit day of month at position 9 followed by 'T' or space",
+                    pszTsIn);
+    ExpTime.tm_mday = TWO_CHARS_TO_INT(pszTs[0], pszTs[1]);
+    pszTs += 3;
+
+    /* hour */
+    if (   !IS_DIGIT(pszTs[0], 2)
+        || !IS_DIGIT(pszTs[1], 9)
+        || pszTs[2] != ':')
+        return errx(pCtx, 2, "Malformed timestamp '%s' given to -d: expected to two digit hour at position 12 followed by colon",
+                    pszTsIn);
+    ExpTime.tm_hour = TWO_CHARS_TO_INT(pszTs[0], pszTs[1]);
+    pszTs += 3;
+
+    /* minute */
+    if (   !IS_DIGIT(pszTs[0], 5)
+        || !IS_DIGIT(pszTs[1], 9)
+        || pszTs[2] != ':')
+        return errx(pCtx, 2, "Malformed timestamp '%s' given to -d: expected to two digit minute at position 15 followed by colon",
+                    pszTsIn);
+    ExpTime.tm_min = TWO_CHARS_TO_INT(pszTs[0], pszTs[1]);
+    pszTs += 3;
+
+    /* seconds */
+    if (   !IS_DIGIT(pszTs[0], 5)
+        || !IS_DIGIT(pszTs[1], 9))
+        return errx(pCtx, 2, "Malformed timestamp '%s' given to -d: expected to two digit seconds at position 12", pszTsIn);
+    ExpTime.tm_sec = TWO_CHARS_TO_INT(pszTs[0], pszTs[1]);
+    pszTs += 2;
+
+    /* fraction */
+    pDst->tv_usec = 0;
+    if (*pszTs == '.' || *pszTs == ',')
+    {
+        int iFactor;
+
+        pszTs++;
+        if (!IS_DIGIT(*pszTs, 9))
+            return errx(pCtx, 2, "Malformed timestamp '%s' given to -d: empty fraction", pszTsIn);
+
+        iFactor = 100000;
+        do
+        {
+            pDst->tv_usec += ((unsigned)*pszTs - (unsigned)'0') * iFactor;
+            iFactor /= 10;
+            pszTs++;
+        } while (IS_DIGIT(*pszTs, 9));
+    }
+
+    /* zulu time indicator */
+    ExpTime.tm_isdst = -1;
+    if (*pszTs == 'Z' || *pszTs == 'z')
+    {
+        ExpTime.tm_isdst = 0;
+        pszTs++;
+        if (*pszTs != '\0')
+            return errx(pCtx, 2,
+                        "Malformed timestamp '%s' given to -d: Unexpected character(s) after zulu time indicator at end of timestamp",
+                        pszTsIn);
+    }
+    else if (*pszTs != '\0')
+        return errx(pCtx, 2, "Malformed timestamp '%s' given to -d: expected to 'Z' (zulu) or nothing at end of timestamp", pszTsIn);
+
+    /*
+     * Convert to UTC seconds using either timegm or mktime.
+     */
+    ExpTime.tm_yday  = -1;
+    ExpTime.tm_wday  = -1;
+    if (ExpTime.tm_isdst == 0)
+    {
+#if K_OS == K_OS_SOLARIS || K_OS == K_OS_OS2
+        pDst->tv_sec = mktime(&ExpTime) - timezone; /* best we can do for now */
+#else
+        pDst->tv_sec = timegm(&ExpTime);
+#endif
+        if (pDst->tv_sec == -1)
+            return errx(pCtx, 1, "timegm failed on '%s': %s", pszTs, strerror(errno));
+    }
+    else
+    {
+        pDst->tv_sec = mktime(&ExpTime);
+        if (pDst->tv_sec == -1)
+            return errx(pCtx, 1, "mktime failed on '%s': %s", pszTs, strerror(errno));
+    }
+    return 0;
+}
+
+
+/**
+ * Parse -t timestamp: [[CC]YY]MMDDhhmm[.SS]
+ */
+static int touch_parse_ts(PKMKBUILTINCTX pCtx, const char *pszTs, struct timeval *pDst)
+{
+    size_t const    cchTs = strlen(pszTs);
+    size_t          cchTsNoSec;
+    struct tm       ExpTime;
+    struct tm      *pExpTime;
+    struct timeval  Now;
+    int rc;
+
+    /*
+     * Do some input validations first.
+     */
+    if ((cchTs & 1) && pszTs[cchTs - 3] != '.')
+        return errx(pCtx, 2, "Invalid timestamp given to -t: %s", pszTs);
+    switch (cchTs)
+    {
+        case 8:             /*     MMDDhhmm */
+        case 8 + 2:         /*   YYMMDDhhmm */
+        case 8 + 2 + 2:     /* CCYYMMDDhhmm */
+            cchTsNoSec = cchTs;
+            break;
+        case 8 + 3:         /*     MMDDhhmm.SS */
+        case 8 + 3 + 2:     /*   YYMMDDhhmm.SS */
+        case 8 + 3 + 2 + 2: /* CCYYMMDDhhmm.SS */
+            if (pszTs[cchTs - 3] != '.')
+                return errx(pCtx, 2, "Invalid timestamp (-t) '%s': missing dot for seconds part", pszTs);
+            if (   !IS_DIGIT(pszTs[cchTs - 2], 5)
+                || !IS_DIGIT(pszTs[cchTs - 1], 9))
+                return errx(pCtx, 2, "Invalid timestamp (-t) '%s': malformed seconds part", pszTs);
+            cchTsNoSec = cchTs - 3;
+            break;
+        default:
+            return errx(pCtx, 1, "Invalid timestamp (-t) '%s': wrong length (%d)", pszTs, (int)cchTs);
+    }
+
+    switch (cchTsNoSec)
+    {
+        case 8 + 2 + 2:     /* CCYYMMDDhhmm */
+            if (   !IS_DIGIT(pszTs[cchTsNoSec - 12], 9)
+                || !IS_DIGIT(pszTs[cchTsNoSec - 11], 9))
+                return errx(pCtx, 2, "Invalid timestamp (-t) '%s': malformed CC part", pszTs);
+            /* fall thru */
+        case 8 + 2:         /*   YYMMDDhhmm */
+            if (   !IS_DIGIT(pszTs[cchTsNoSec - 10], 9)
+                || !IS_DIGIT(pszTs[cchTsNoSec -  9], 9))
+                return errx(pCtx, 2, "Invalid timestamp (-t) '%s': malformed YY part", pszTs);
+            /* fall thru */
+        case 8:             /*     MMDDhhmm */
+            if (   !IS_DIGIT(pszTs[cchTsNoSec - 8], 1)
+                || !IS_DIGIT(pszTs[cchTsNoSec - 7], 9) )
+                return errx(pCtx, 2, "Invalid timestamp (-t) '%s': malformed month part", pszTs);
+            if (   !IS_DIGIT(pszTs[cchTsNoSec - 6], 3)
+                || !IS_DIGIT(pszTs[cchTsNoSec - 5], 9) )
+                return errx(pCtx, 2, "Invalid timestamp (-t) '%s': malformed day part", pszTs);
+            if (   !IS_DIGIT(pszTs[cchTsNoSec - 4], 2)
+                || !IS_DIGIT(pszTs[cchTsNoSec - 3], 9) )
+                return errx(pCtx, 2, "Invalid timestamp (-t) '%s': malformed hour part", pszTs);
+            if (   !IS_DIGIT(pszTs[cchTsNoSec - 2], 5)
+                || !IS_DIGIT(pszTs[cchTsNoSec - 1], 9) )
+                return errx(pCtx, 2, "Invalid timestamp (-t) '%s': malformed minute part", pszTs);
+            break;
+    }
+
+    /*
+     * Get the current time and explode it.
+     */
+    rc = gettimeofday(&Now, NULL);
+    if (rc != 0)
+        return errx(pCtx, 1, "gettimeofday failed: %s", strerror(errno));
+
+    pExpTime = localtime_r(&Now.tv_sec, &ExpTime);
+    if (pExpTime == NULL)
+        return errx(pCtx, 1, "localtime_r failed: %s", strerror(errno));
+
+    /*
+     * Do the decoding.
+     */
+    if (cchTs & 1)
+        pExpTime->tm_sec = TWO_CHARS_TO_INT(pszTs[cchTs - 2], pszTs[cchTs - 1]);
+    else
+        pExpTime->tm_sec = 0;
+
+    if (cchTsNoSec == 8 + 2 + 2) /* CCYY */
+        pExpTime->tm_year = TWO_CHARS_TO_INT(pszTs[0], pszTs[1]) * 100
+                          + TWO_CHARS_TO_INT(pszTs[2], pszTs[3])
+                          - 1900;
+    else  if (cchTsNoSec == 8 + 2) /* YY */
+    {
+        pExpTime->tm_year = TWO_CHARS_TO_INT(pszTs[0], pszTs[1]);
+        if (pExpTime->tm_year < 69)
+            pExpTime->tm_year += 100;
+    }
+
+    pExpTime->tm_mon  = TWO_CHARS_TO_INT(pszTs[cchTsNoSec - 8], pszTs[cchTsNoSec - 7]) - 1;
+    pExpTime->tm_mday = TWO_CHARS_TO_INT(pszTs[cchTsNoSec - 6], pszTs[cchTsNoSec - 5]);
+    pExpTime->tm_hour = TWO_CHARS_TO_INT(pszTs[cchTsNoSec - 4], pszTs[cchTsNoSec - 3]);
+    pExpTime->tm_min  = TWO_CHARS_TO_INT(pszTs[cchTsNoSec - 2], pszTs[cchTsNoSec - 1]);
+
+    /*
+     * Use mktime to convert to UTC seconds.
+     */
+    pExpTime->tm_isdst = -1;
+    pExpTime->tm_yday  = -1;
+    pExpTime->tm_wday  = -1;
+    pDst->tv_usec = 0;
+    pDst->tv_sec  = mktime(pExpTime);
+    if (pDst->tv_sec != -1)
+        return 0;
+    return errx(pCtx, 1, "mktime failed on '%s': %s", pszTs, strerror(errno));
+}
+
+
+/**
+ * Check for old timestamp: MMDDhhmm[YY]
+ */
+static int touch_parse_old_ts(PKMKBUILTINCTX pCtx, const char *pszOldTs, time_t Now, struct timeval *pDst)
+{
+    /*
+     * Check if this is a valid timestamp.
+     */
+    size_t const cchOldTs = strlen(pszOldTs);
+    if (   (   cchOldTs == 8
+            || cchOldTs == 10)
+        && IS_DIGIT(pszOldTs[0], 1)
+        && IS_DIGIT(pszOldTs[1], 9)
+        && IS_DIGIT(pszOldTs[2], 3)
+        && IS_DIGIT(pszOldTs[3], 9)
+        && IS_DIGIT(pszOldTs[4], 2)
+        && IS_DIGIT(pszOldTs[5], 9)
+        && IS_DIGIT(pszOldTs[6], 5)
+        && IS_DIGIT(pszOldTs[7], 9)
+        && (   cchOldTs == 8
+            || (   IS_DIGIT(pszOldTs[8], 9)
+                && IS_DIGIT(pszOldTs[9], 9) )) )
+    {
+        /*
+         * Explode the current time as local.
+         */
+        struct tm   ExpTime;
+        struct tm  *pExpTime;
+        pExpTime = localtime_r(&Now, &ExpTime);
+        if (pExpTime == NULL)
+            return errx(pCtx, 1, "localtime_r failed: %s", strerror(errno));
+
+        /*
+         * Decode the bits we've got.
+         */
+        pExpTime->tm_mon  = TWO_CHARS_TO_INT(pszOldTs[0], pszOldTs[1]) - 1;
+        pExpTime->tm_mday = TWO_CHARS_TO_INT(pszOldTs[2], pszOldTs[3]);
+        pExpTime->tm_hour = TWO_CHARS_TO_INT(pszOldTs[4], pszOldTs[5]);
+        pExpTime->tm_min  = TWO_CHARS_TO_INT(pszOldTs[6], pszOldTs[7]);
+        if (cchOldTs == 10)
+        {
+            pExpTime->tm_year = TWO_CHARS_TO_INT(pszOldTs[8], pszOldTs[9]);
+            if (pExpTime->tm_year <= 38)  /* up to 2038, 32-bit time_t style logic. */
+                pExpTime->tm_year += 100;
+        }
+
+        /*
+         * Use mktime to convert to UTC seconds.
+         */
+        pExpTime->tm_isdst = -1;
+        pExpTime->tm_yday  = -1;
+        pExpTime->tm_wday  = -1;
+        pDst->tv_usec = 0;
+        pDst->tv_sec  = mktime(pExpTime);
+        if (pDst->tv_sec != -1)
+            return 0;
+        return errx(pCtx, 1, "mktime failed on '%s': %s", pszOldTs, strerror(errno));
+    }
+
+    /* No valid timestamp present. */
+    return -1;
+}
+
+
+/**
+ * Parses the arguments into pThis.
+ *
+ * @returns exit code.
+ * @param   pThis               Options structure to return the parsed info in.
+ *                              Caller initalizes this with defaults.
+ * @param   cArgs               The number of arguments.
+ * @param   papszArgs           The arguments.
+ * @param   pfExit              Indicates whether to exit or to start processing
+ *                              files.
+ */
+static int touch_parse_args(PKMKTOUCHOPTS pThis, int cArgs, char **papszArgs, KBOOL *pfExit)
+{
+    int iAdjustValue = 0;
+    int iArg;
+    int rc;
+
+    *pfExit = K_TRUE;
+    /*
+     * Parse arguments, skipping all files (GNU style).
+     */
+    for (iArg = 1; iArg < cArgs; iArg++)
+    {
+        const char *pszArg = papszArgs[iArg];
+        if (*pszArg == '-')
+        {
+            const char *pszLongValue = NULL;
+            char ch = *++pszArg;
+            pszArg++;
+
+            /*
+             * Deal with long options first, preferably translating them into short ones.
+             */
+            if (ch == '-')
+            {
+                const char *pszLong = pszArg;
+                ch = *pszArg++;
+                if (!ch)
+                {
+                    while (++iArg < cArgs)
+                        pThis->papszFiles[pThis->cFiles++] = papszArgs[iArg];
+                    break; /* '--' */
+                }
+
+                /* Translate long options. */
+                pszArg = "";
+                if (strcmp(pszLong, "adjust") == 0)
+                    ch = 'A';
+                else if (strncmp(pszLong, "adjust=", sizeof("adjust=") - 1) == 0)
+                {
+                    ch = 'A';
+                    pszLongValue = pszArg = pszLong + sizeof("adjust=") - 1;
+                }
+                else if (strcmp(pszLong, "no-create") == 0)
+                    ch = 'c';
+                else if (strcmp(pszLong, "date") == 0)
+                    ch = 'd';
+                else if (strncmp(pszLong, "date=", sizeof("date=") - 1) == 0)
+                {
+                    ch = 'd';
+                    pszLongValue = pszArg = pszLong + sizeof("date=") - 1;
+                }
+                else if (strcmp(pszLong, "no-dereference") == 0)
+                    ch = 'h';
+                else if (strcmp(pszLong, "reference") == 0)
+                    ch = 'r';
+                else if (strncmp(pszLong, "reference=", sizeof("reference=") - 1) == 0)
+                {
+                    ch = 'r';
+                    pszLongValue = pszArg = pszLong + sizeof("reference=") - 1;
+                }
+                else if (strcmp(pszLong, "time") == 0)
+                    ch = 'T';
+                else if (strncmp(pszLong, "time=", sizeof("time=") - 1) == 0)
+                {
+                    ch = 'T';
+                    pszLongValue = pszArg = pszLong + sizeof("time=") - 1;
+                }
+                else if (strcmp(pszLong, "help") == 0)
+                    return touch_usage();
+                else if (strcmp(pszLong, "version") == 0)
+                    return kbuild_version(papszArgs[0]);
+                else
+                    return errx(pThis->pCtx, 2, "Unknown option: --%s", pszLong);
+            }
+
+            /*
+             * Process short options.
+             */
+            do
+            {
+                /* Some options takes a value. */
+                const char *pszValue;
+                switch (ch)
+                {
+                    case 'A':
+                    case 'd':
+                    case 'r':
+                    case 't':
+                    case 'T':
+                        if (*pszArg || pszLongValue)
+                        {
+                            pszValue = pszArg;
+                            pszArg = "";
+                        }
+                        else if (iArg + 1 < cArgs)
+                            pszValue = papszArgs[++iArg];
+                        else
+                            return errx(pThis->pCtx, 2, "Option -%c requires a value", ch);
+                        break;
+
+                    default:
+                        pszValue = NULL;
+                        break;
+                }
+
+                switch (ch)
+                {
+                    /* -A [-][[HH]MM]SS */
+                    case 'A':
+                        rc = touch_parse_adjust(pThis->pCtx, pszValue, &iAdjustValue);
+                        if (rc != 0)
+                            return rc;
+                        if (pThis->enmAction != kTouchActionSet)
+                        {
+                            pThis->enmAction = kTouchActionAdjust;
+                            pThis->NewATime.tv_sec  = iAdjustValue;
+                            pThis->NewATime.tv_usec = 0;
+                            pThis->NewMTime = pThis->NewATime;
+                        }
+                        /* else: applied after parsing everything. */
+                        break;
+
+                    case 'a':
+                        pThis->enmWhatToTouch = kTouchAccessOnly;
+                        break;
+
+                    case 'c':
+                        pThis->fCreate = K_FALSE;
+                        break;
+
+                    case 'd':
+                        rc = touch_parse_d_ts(pThis->pCtx, pszValue, &pThis->NewATime);
+                        if (rc != 0)
+                            return rc;
+                        pThis->enmAction = kTouchActionSet;
+                        pThis->NewMTime  = pThis->NewATime;
+                        break;
+
+                    case 'f':
+                        /* some historical thing, ignored. */
+                        break;
+
+                    case 'h':
+                        pThis->fDereference = K_FALSE;
+                        break;
+
+                    case 'm':
+                        pThis->enmWhatToTouch = kTouchModifyOnly;
+                        break;
+
+                    case 'r':
+                    {
+                        struct stat St;
+                        if (stat(pszValue, &St) != 0)
+                            return errx(pThis->pCtx, 1, "Failed to stat '%s' (-r option): %s", pszValue, strerror(errno));
+
+                        pThis->enmAction = kTouchActionSet;
+                        pThis->NewATime.tv_sec  = St.st_atime;
+                        pThis->NewMTime.tv_sec  = St.st_mtime;
+#if FILE_TIMESTAMP_HI_RES
+                        pThis->NewATime.tv_usec = St.ST_ATIM_NSEC / 1000;
+                        pThis->NewMTime.tv_usec = St.ST_MTIM_NSEC / 1000;
+#else
+                        pThis->NewATime.tv_usec = 0;
+                        pThis->NewMTime.tv_usec = 0;
+#endif
+                        break;
+                    }
+
+                    case 't':
+                        rc = touch_parse_ts(pThis->pCtx, pszValue, &pThis->NewATime);
+                        if (rc != 0)
+                            return rc;
+                        pThis->enmAction = kTouchActionSet;
+                        pThis->NewMTime  = pThis->NewATime;
+                        break;
+
+                    case 'T':
+                        if (   strcmp(pszValue, "atime") == 0
+                            || strcmp(pszValue, "access") == 0)
+                            pThis->enmWhatToTouch = kTouchAccessOnly;
+                        else if (   strcmp(pszValue, "mtime") == 0
+                                 || strcmp(pszValue, "modify") == 0)
+                            pThis->enmWhatToTouch = kTouchModifyOnly;
+                        else
+                            return errx(pThis->pCtx, 2, "Unknown --time value: %s", pszValue);
+                        break;
+
+                    case 'V':
+                        return kbuild_version(papszArgs[0]);
+
+                    default:
+                        return errx(pThis->pCtx, 2, "Unknown option: -%c (%c%s)", ch, ch, pszArg);
+                }
+
+            } while ((ch = *pszArg++) != '\0');
+        }
+        else
+            pThis->papszFiles[pThis->cFiles++] = papszArgs[iArg];
+    }
+
+    /*
+     * Allow adjusting specified timestamps too like BSD does.
+     */
+    if (   pThis->enmAction == kTouchActionSet
+        && iAdjustValue != 0)
+    {
+        if (   pThis->enmWhatToTouch == kTouchAccessAndModify
+            || pThis->enmWhatToTouch == kTouchAccessOnly)
+            pThis->NewATime.tv_sec += iAdjustValue;
+        if (   pThis->enmWhatToTouch == kTouchAccessAndModify
+            || pThis->enmWhatToTouch == kTouchModifyOnly)
+            pThis->NewMTime.tv_sec += iAdjustValue;
+    }
+
+    /*
+     * Check for old timestamp: MMDDhhmm[YY]
+     */
+    if (   pThis->enmAction == kTouchActionCurrent
+        && pThis->cFiles >= 2)
+    {
+        struct timeval OldTs;
+        rc = touch_parse_old_ts(pThis->pCtx, pThis->papszFiles[0], pThis->NewATime.tv_sec, &OldTs);
+        if (rc == 0)
+        {
+            int iFile;
+
+            pThis->NewATime = OldTs;
+            pThis->NewMTime = OldTs;
+            pThis->enmAction = kTouchActionSet;
+
+            for (iFile = 1; iFile < pThis->cFiles; iFile++)
+                pThis->papszFiles[iFile - 1] = pThis->papszFiles[iFile];
+            pThis->cFiles--;
+        }
+        else if (rc > 0)
+            return rc;
+    }
+
+    /*
+     * Check that we've found at least one file argument.
+     */
+    if (pThis->cFiles > 0)
+    {
+        *pfExit = K_FALSE;
+        return 0;
+    }
+    return errx(pThis->pCtx, 2, "No file specified");
+}
+
+
+/**
+ * Touches one file.
+ *
+ * @returns exit code.
+ * @param   pThis               The options.
+ * @param   pszFile             The file to touch.
+ */
+static int touch_process_file(PKMKTOUCHOPTS pThis, const char *pszFile)
+{
+    int             fd;
+    int             rc;
+    struct stat     St;
+    struct timeval  aTimes[2];
+
+    /*
+     * Create the file if it doesn't exists.  If the --no-create/-c option is
+     * in effect, we silently skip the file if it doesn't already exist.
+     */
+    if (pThis->fDereference)
+        rc = stat(pszFile, &St);
+    else
+        rc = lstat(pszFile, &St);
+    if (rc != 0)
+    {
+        if (errno != ENOENT)
+            return errx(pThis->pCtx, 1, "Failed to stat '%s': %s", pszFile, strerror(errno));
+
+        if (!pThis->fCreate)
+            return 0;
+        fd = open(pszFile, O_WRONLY | O_CREAT | KMK_OPEN_NO_INHERIT, 0666);
+        if (fd == -1)
+            return errx(pThis->pCtx, 1, "Failed to create '%s': %s", pszFile, strerror(errno));
+
+        /* If we're not setting the current time, we may need value stat info
+           on the file, so get it thru the file descriptor before closing it. */
+        if (pThis->enmAction == kTouchActionCurrent)
+            rc = 0;
+        else
+            rc = fstat(fd, &St);
+        if (close(fd) != 0)
+            return errx(pThis->pCtx, 1, "Failed to close '%s' after creation: %s", pszFile, strerror(errno));
+        if (rc != 0)
+            return errx(pThis->pCtx, 1, "Failed to fstat '%s' after creation: %s", pszFile, strerror(errno));
+
+        /* We're done now if we're setting the current time. */
+        if (pThis->enmAction == kTouchActionCurrent)
+            return 0;
+    }
+
+    /*
+     * Create aTimes and call utimes/lutimes.
+     */
+    aTimes[0].tv_sec  = St.st_atime;
+    aTimes[1].tv_sec  = St.st_mtime;
+#if FILE_TIMESTAMP_HI_RES
+    aTimes[0].tv_usec = St.ST_ATIM_NSEC / 1000;
+    aTimes[1].tv_usec = St.ST_MTIM_NSEC / 1000;
+#else
+    aTimes[0].tv_usec = 0;
+    aTimes[1].tv_usec = 0;
+#endif
+    if (   pThis->enmWhatToTouch == kTouchAccessAndModify
+        || pThis->enmWhatToTouch == kTouchAccessOnly)
+    {
+        if (   pThis->enmAction == kTouchActionCurrent
+            || pThis->enmAction == kTouchActionSet)
+            aTimes[0] = pThis->NewATime;
+        else
+            aTimes[0].tv_sec += pThis->NewATime.tv_sec;
+    }
+    if (   pThis->enmWhatToTouch == kTouchAccessAndModify
+        || pThis->enmWhatToTouch == kTouchModifyOnly)
+    {
+        if (   pThis->enmAction == kTouchActionCurrent
+            || pThis->enmAction == kTouchActionSet)
+            aTimes[1] = pThis->NewMTime;
+        else
+            aTimes[1].tv_sec += pThis->NewMTime.tv_sec;
+    }
+
+    /*
+     * Try set the times.  If we're setting current time, fall back on calling
+     * [l]utimes with a NULL timeval vector since that has slightly different
+     * permissions checks.  (Note that we don't do that by default because it
+     * may do more than what we want (st_ctime).)
+     */
+    if (pThis->fDereference)
+        rc = utimes(pszFile, aTimes);
+    else
+        rc = lutimes(pszFile, aTimes);
+    if (rc != 0)
+    {
+        if (pThis->enmAction == kTouchActionCurrent)
+        {
+            if (pThis->fDereference)
+                rc = utimes(pszFile, NULL);
+            else
+                rc = lutimes(pszFile, NULL);
+        }
+        if (rc != 0)
+            rc = errx(pThis->pCtx, 1, "%stimes failed on '%s': %s", pThis->fDereference ? "" : "l", pszFile, strerror(errno));
+    }
+
+    return rc;
+}
+
+
+/**
+ * Actual main function for the touch command.
+ */
+int kmk_builtin_touch(int argc, char **argv, char **envp, PKMKBUILTINCTX pCtx)
+{
+    int             rc;
+    KMKTOUCHOPTS    This;
+    K_NOREF(envp);
+
+    /*
+     * Initialize options with defaults and parse them.
+     */
+    This.pCtx           = pCtx;
+    This.enmWhatToTouch = kTouchAccessAndModify;
+    This.enmAction      = kTouchActionCurrent;
+    This.fCreate        = K_TRUE;
+    This.fDereference   = K_TRUE;
+    This.cFiles         = 0;
+    This.papszFiles     = (char **)calloc(argc, sizeof(char *));
+    if (This.papszFiles)
+    {
+        rc = gettimeofday(&This.NewATime, NULL);
+        if (rc == 0)
+        {
+            KBOOL fExit;
+            This.NewMTime = This.NewATime;
+
+            rc = touch_parse_args(&This, argc, argv, &fExit);
+            if (rc == 0 && !fExit)
+            {
+                /*
+                 * Process the files.
+                 */
+                int iFile;
+                for (iFile = 0; iFile < This.cFiles; iFile++)
+                {
+                    int rc2 = touch_process_file(&This, This.papszFiles[iFile]);
+                    if (rc2 != 0 && rc == 0)
+                        rc = rc2;
+                }
+            }
+        }
+        else
+            rc = errx(pCtx, 2, "gettimeofday failed: %s", strerror(errno));
+        free(This.papszFiles);
+    }
+    else
+        rc = errx(pCtx, 2, "calloc failed");
+    return rc;
+}
+
+#ifdef KMK_BUILTIN_STANDALONE
+int main(int argc, char **argv, char **envp)
+{
+    KMKBUILTINCTX Ctx = { "kmk_touch", NULL };
+    return kmk_builtin_touch(argc, argv, envp, &Ctx);
+}
+#endif
+
diff --git a/src/kmk/load.c b/src/kmk/load.c
new file mode 100644
index 0000000..37e7b8e
--- /dev/null
+++ b/src/kmk/load.c
@@ -0,0 +1,267 @@
+/* Loading dynamic objects for GNU Make.
+Copyright (C) 2012-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#if MAKE_LOAD
+
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <dlfcn.h>
+#include <errno.h>
+
+#define SYMBOL_EXTENSION        "_gmk_setup"
+
+#include "debug.h"
+#include "filedef.h"
+#include "variable.h"
+
+/* Tru64 V4.0 does not have this flag */
+#ifndef RTLD_GLOBAL
+# define RTLD_GLOBAL 0
+#endif
+
+struct load_list
+  {
+    struct load_list *next;
+    const char *name;
+    void *dlp;
+  };
+
+static struct load_list *loaded_syms = NULL;
+
+static load_func_t
+load_object (const floc *flocp, int noerror, const char *ldname,
+             const char *symname)
+{
+  static void *global_dl = NULL;
+  load_func_t symp;
+
+  if (! global_dl)
+    {
+      global_dl = dlopen (NULL, RTLD_NOW|RTLD_GLOBAL);
+      if (! global_dl)
+        {
+          const char *err = dlerror ();
+          OS (fatal, flocp, _("Failed to open global symbol table: %s"), err);
+        }
+    }
+
+  symp = (load_func_t) dlsym (global_dl, symname);
+  if (! symp)
+    {
+      struct load_list *new;
+      void *dlp = NULL;
+
+    /* If the path has no "/", try the current directory first.  */
+      if (! strchr (ldname, '/')
+#ifdef HAVE_DOS_PATHS
+          && ! strchr (ldname, '\\')
+#endif
+         )
+        dlp = dlopen (concat (2, "./", ldname), RTLD_LAZY|RTLD_GLOBAL);
+
+      /* If we haven't opened it yet, try the default search path.  */
+      if (! dlp)
+        dlp = dlopen (ldname, RTLD_LAZY|RTLD_GLOBAL);
+
+      /* Still no?  Then fail.  */
+      if (! dlp)
+        {
+          const char *err = dlerror ();
+          if (noerror)
+            DB (DB_BASIC, ("%s", err));
+          else
+            OS (error, flocp, "%s", err);
+          return NULL;
+        }
+
+      /* Assert that the GPL license symbol is defined.  */
+      symp = (load_func_t) dlsym (dlp, "plugin_is_GPL_compatible");
+      if (! symp)
+        OS (fatal, flocp,
+             _("Loaded object %s is not declared to be GPL compatible"),
+             ldname);
+
+      symp = (load_func_t) dlsym (dlp, symname);
+      if (! symp)
+        {
+          const char *err = dlerror ();
+          OSSS (fatal, flocp, _("Failed to load symbol %s from %s: %s"),
+                symname, ldname, err);
+        }
+
+      /* Add this symbol to a trivial lookup table.  This is not efficient but
+         it's highly unlikely we'll be loading lots of objects, and we only
+         need it to look them up on unload, if we rebuild them.  */
+      new = xmalloc (sizeof (struct load_list));
+      new->name = xstrdup (ldname);
+      new->dlp = dlp;
+      new->next = loaded_syms;
+      loaded_syms = new;
+    }
+
+  return symp;
+}
+
+int
+load_file (const floc *flocp, const char **ldname, int noerror)
+{
+  int nmlen = strlen (*ldname);
+  char *new = alloca (nmlen + CSTRLEN (SYMBOL_EXTENSION) + 1);
+  char *symname = NULL;
+  char *loaded;
+  const char *fp;
+  int r;
+  load_func_t symp;
+
+  /* Break the input into an object file name and a symbol name.  If no symbol
+     name was provided, compute one from the object file name.  */
+  fp = strchr (*ldname, '(');
+  if (fp)
+    {
+      const char *ep;
+
+      /* There's an open paren, so see if there's a close paren: if so use
+         that as the symbol name.  We can't have whitespace: it would have
+         been chopped up before this function is called.  */
+      ep = strchr (fp+1, ')');
+      if (ep && ep[1] == '\0')
+        {
+          int l = fp - *ldname;;
+
+          ++fp;
+          if (fp == ep)
+            OS (fatal, flocp, _("Empty symbol name for load: %s"), *ldname);
+
+          /* Make a copy of the ldname part.  */
+          memcpy (new, *ldname, l);
+          new[l] = '\0';
+          *ldname = new;
+          nmlen = l;
+
+          /* Make a copy of the symbol name part.  */
+          symname = new + l + 1;
+          memcpy (symname, fp, ep - fp);
+          symname[ep - fp] = '\0';
+        }
+    }
+
+  /* Add this name to the string cache so it can be reused later.  */
+  *ldname = strcache_add (*ldname);
+
+  /* If this object has been loaded, we're done.  */
+  loaded = allocated_variable_expand ("$(.LOADED)");
+  fp = strstr (loaded, *ldname);
+  r = fp && (fp==loaded || fp[-1]==' ') && (fp[nmlen]=='\0' || fp[nmlen]==' ');
+  if (r)
+    goto exit;
+
+  /* If we didn't find a symbol name yet, construct it from the ldname.  */
+  if (! symname)
+    {
+      char *p = new;
+
+      fp = strrchr (*ldname, '/');
+#ifdef HAVE_DOS_PATHS
+      if (fp)
+        {
+          const char *fp2 = strchr (fp, '\\');
+
+          if (fp2 > fp)
+            fp = fp2;
+        }
+      else
+        fp = strrchr (*ldname, '\\');
+      /* The (improbable) case of d:foo.  */
+      if (fp && *fp && fp[1] == ':')
+        fp++;
+#endif
+      if (!fp)
+        fp = *ldname;
+      else
+        ++fp;
+      while (isalnum (*fp) || *fp == '_')
+        *(p++) = *(fp++);
+      strcpy (p, SYMBOL_EXTENSION);
+      symname = new;
+    }
+
+  DB (DB_VERBOSE, (_("Loading symbol %s from %s\n"), symname, *ldname));
+
+  /* Load it!  */
+  symp = load_object (flocp, noerror, *ldname, symname);
+  if (! symp)
+    return 0;
+
+  /* Invoke the symbol.  */
+  r = (*symp) (flocp);
+
+  /* If it succeeded, add the load file to the loaded variable.  */
+  if (r > 0)
+    {
+      size_t loadlen = strlen (loaded);
+      char *newval = alloca (loadlen + strlen (*ldname) + 2);
+      /* Don't add a space if it's empty.  */
+      if (loadlen)
+        {
+          memcpy (newval, loaded, loadlen);
+          newval[loadlen++] = ' ';
+        }
+      strcpy (&newval[loadlen], *ldname);
+      do_variable_definition (flocp, ".LOADED", newval, o_default, f_simple, 0);
+    }
+
+ exit:
+  free (loaded);
+  return r;
+}
+
+void
+unload_file (const char *name)
+{
+  struct load_list *d;
+
+  for (d = loaded_syms; d != NULL; d = d->next)
+    if (streq (d->name, name) && d->dlp)
+      {
+        if (dlclose (d->dlp))
+          perror_with_name ("dlclose", d->name);
+        d->dlp = NULL;
+        break;
+      }
+}
+
+#else
+
+int
+load_file (const floc *flocp, const char **ldname UNUSED, int noerror)
+{
+  if (! noerror)
+    O (fatal, flocp,
+       _("The 'load' operation is not supported on this platform."));
+
+  return 0;
+}
+
+void
+unload_file (const char *name UNUSED)
+{
+  O (fatal, NILF, "INTERNAL: Cannot unload when load is not supported!");
+}
+
+#endif  /* MAKE_LOAD */
diff --git a/src/kmk/loadapi.c b/src/kmk/loadapi.c
new file mode 100644
index 0000000..677bc33
--- /dev/null
+++ b/src/kmk/loadapi.c
@@ -0,0 +1,82 @@
+/* API for GNU Make dynamic objects.
+Copyright (C) 2013-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include "filedef.h"
+#include "variable.h"
+#include "dep.h"
+
+/* Allocate a buffer in our context, so we can free it.  */
+char *
+gmk_alloc (unsigned int len)
+{
+  return xmalloc (len);
+}
+
+/* Free a buffer returned by gmk_expand().  */
+void
+gmk_free (char *s)
+{
+  free (s);
+}
+
+/* Evaluate a buffer as make syntax.
+   Ideally eval_buffer() will take const char *, but not yet.  */
+void
+gmk_eval (const char *buffer, const gmk_floc *gfloc)
+{
+  /* Preserve existing variable buffer context.  */
+  char *pbuf;
+  unsigned int plen;
+  char *s;
+  floc fl;
+  floc *flp;
+
+  if (gfloc)
+    {
+      fl.filenm = gfloc->filenm;
+      fl.lineno = gfloc->lineno;
+      fl.offset = 0;
+      flp = &fl;
+    }
+  else
+    flp = NULL;
+
+  install_variable_buffer (&pbuf, &plen);
+
+  s = xstrdup (buffer);
+  eval_buffer (s, flp IF_WITH_VALUE_LENGTH_PARAM (strlen (s) /** @todo suboptimal */));
+  free (s);
+
+  restore_variable_buffer (pbuf, plen);
+}
+
+/* Expand a string and return an allocated buffer.
+   Caller must call gmk_free() with this buffer.  */
+char *
+gmk_expand (const char *ref)
+{
+  return allocated_variable_expand (ref);
+}
+
+/* Register a function to be called from makefiles.  */
+void
+gmk_add_function (const char *name, gmk_func_ptr func,
+                  unsigned int min, unsigned int max, unsigned int flags)
+{
+  define_new_function (reading_file, name, min, max, flags, func);
+}
diff --git a/src/kmk/main.c b/src/kmk/main.c
new file mode 100644
index 0000000..d56af0a
--- /dev/null
+++ b/src/kmk/main.c
@@ -0,0 +1,4482 @@
+/* Argument parsing and main program of GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "os.h"
+#include "filedef.h"
+#include "dep.h"
+#include "variable.h"
+#include "job.h"
+#include "commands.h"
+#include "rule.h"
+#include "debug.h"
+#include "getopt.h"
+#ifdef KMK
+# include "kbuild.h"
+#endif
+#ifdef CONFIG_WITH_KMK_BUILTIN_STATS
+# include "kmkbuiltin.h"
+#endif
+
+#include <assert.h>
+#ifdef _AMIGA
+# include <dos/dos.h>
+# include <proto/dos.h>
+#endif
+#ifdef WINDOWS32
+# include <windows.h>
+# include <io.h>
+# include "pathstuff.h"
+# ifndef CONFIG_NEW_WIN_CHILDREN
+#  include "sub_proc.h"
+# else
+#  include "w32/winchildren.h"
+# endif
+# include "w32err.h"
+#endif
+#ifdef __EMX__
+# include <sys/types.h>
+# include <sys/wait.h>
+#endif
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#endif
+#ifdef CONFIG_WITH_COMPILER
+# include "kmk_cc_exec.h"
+#endif
+
+#ifdef KMK /* for get_online_cpu_count */
+# if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#  include <sys/sysctl.h>
+# endif
+# ifdef __OS2__
+#  define INCL_BASE
+#  include <os2.h>
+# endif
+# ifdef __HAIKU__
+#  include <OS.h>
+# endif
+#endif /* KMK*/
+
+#if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT)
+# define SET_STACK_SIZE
+#endif
+
+#ifdef SET_STACK_SIZE
+# include <sys/resource.h>
+#endif
+
+#ifdef _AMIGA
+int __stack = 20000; /* Make sure we have 20K of stack space */
+#endif
+#ifdef VMS
+int vms_use_mcr_command = 0;
+int vms_always_use_cmd_file = 0;
+int vms_gnv_shell = 0;
+int vms_legacy_behavior = 0;
+int vms_comma_separator = 0;
+int vms_unix_simulation = 0;
+int vms_report_unix_paths = 0;
+
+/* Evaluates if a VMS environment option is set, only look at first character */
+static int
+get_vms_env_flag (const char *name, int default_value)
+{
+char * value;
+char x;
+
+  value = getenv (name);
+  if (value == NULL)
+    return default_value;
+
+  x = toupper (value[0]);
+  switch (x)
+    {
+    case '1':
+    case 'T':
+    case 'E':
+      return 1;
+      break;
+    case '0':
+    case 'F':
+    case 'D':
+      return 0;
+    }
+}
+#endif
+
+#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
+void print_variable_stats (void);
+void print_dir_stats (void);
+void print_file_stats (void);
+#endif
+
+#if defined HAVE_WAITPID || defined HAVE_WAIT3
+# define HAVE_WAIT_NOHANG
+#endif
+
+#if !defined(HAVE_UNISTD_H) && !defined(_MSC_VER) /* bird */
+int chdir ();
+#endif
+#ifndef STDC_HEADERS
+# ifndef sun                    /* Sun has an incorrect decl in a header.  */
+void exit (int) __attribute__ ((noreturn));
+# endif
+double atof ();
+#endif
+
+static void clean_jobserver (int status);
+static void print_data_base (void);
+static void print_version (void);
+static void decode_switches (int argc, const char **argv, int env);
+static void decode_env_switches (const char *envar, unsigned int len);
+static struct variable *define_makeflags (int all, int makefile);
+static char *quote_for_env (char *out, const char *in);
+static void initialize_global_hash_tables (void);
+
+
+/* The structure that describes an accepted command switch.  */
+
+struct command_switch
+  {
+    int c;                      /* The switch character.  */
+
+    enum                        /* Type of the value.  */
+      {
+        flag,                   /* Turn int flag on.  */
+        flag_off,               /* Turn int flag off.  */
+        string,                 /* One string per invocation.  */
+        strlist,                /* One string per switch.  */
+        filename,               /* A string containing a file name.  */
+        positive_int,           /* A positive integer.  */
+        floating,               /* A floating-point number (double).  */
+        ignore                  /* Ignored.  */
+      } type;
+
+    void *value_ptr;    /* Pointer to the value-holding variable.  */
+
+    unsigned int env:1;         /* Can come from MAKEFLAGS.  */
+    unsigned int toenv:1;       /* Should be put in MAKEFLAGS.  */
+    unsigned int no_makefile:1; /* Don't propagate when remaking makefiles.  */
+
+    const void *noarg_value;    /* Pointer to value used if no arg given.  */
+    const void *default_value;  /* Pointer to default value.  */
+
+    const char *long_name;      /* Long option name.  */
+  };
+
+/* True if C is a switch value that corresponds to a short option.  */
+
+#define short_option(c) ((c) <= CHAR_MAX)
+
+/* The structure used to hold the list of strings given
+   in command switches of a type that takes strlist arguments.  */
+
+struct stringlist
+  {
+    const char **list;  /* Nil-terminated list of strings.  */
+    unsigned int idx;   /* Index into above.  */
+    unsigned int max;   /* Number of pointers allocated.  */
+  };
+
+
+/* The recognized command switches.  */
+
+/* Nonzero means do extra verification (that may slow things down).  */
+
+int verify_flag;
+
+/* Nonzero means do not print commands to be executed (-s).  */
+
+int silent_flag;
+
+/* Nonzero means just touch the files
+   that would appear to need remaking (-t)  */
+
+int touch_flag;
+
+/* Nonzero means just print what commands would need to be executed,
+   don't actually execute them (-n).  */
+
+int just_print_flag;
+
+#ifdef CONFIG_PRETTY_COMMAND_PRINTING
+/* Nonzero means to print commands argument for argument skipping blanks. */
+
+int pretty_command_printing;
+#endif
+
+#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
+/* Nonzero means to print internal statistics before exiting. */
+
+int print_stats_flag;
+#endif
+
+#ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+/* Minimum number of seconds to report, -1 if disabled. */
+
+int print_time_min = -1;
+static int default_print_time_min = -1;
+static int no_val_print_time_min = 0;
+static big_int make_start_ts = -1;
+int print_time_width = 5;
+#endif
+
+/* Print debugging info (--debug).  */
+
+static struct stringlist *db_flags = 0;
+static int debug_flag = 0;
+
+int db_level = 0;
+
+/* Synchronize output (--output-sync).  */
+
+char *output_sync_option = 0;
+
+#ifdef WINDOWS32
+/* Suspend make in main for a short time to allow debugger to attach */
+
+int suspend_flag = 0;
+#endif
+
+/* Environment variables override makefile definitions.  */
+
+int env_overrides = 0;
+
+/* Nonzero means ignore status codes returned by commands
+   executed to remake files.  Just treat them all as successful (-i).  */
+
+int ignore_errors_flag = 0;
+
+/* Nonzero means don't remake anything, just print the data base
+   that results from reading the makefile (-p).  */
+
+int print_data_base_flag = 0;
+
+/* Nonzero means don't remake anything; just return a nonzero status
+   if the specified targets are not up to date (-q).  */
+
+int question_flag = 0;
+
+/* Nonzero means do not use any of the builtin rules (-r) / variables (-R).  */
+
+int no_builtin_rules_flag = 0;
+int no_builtin_variables_flag = 0;
+
+/* Nonzero means keep going even if remaking some file fails (-k).  */
+
+int keep_going_flag;
+int default_keep_going_flag = 0;
+
+/* Nonzero means check symlink mtimes.  */
+
+int check_symlink_flag = 0;
+
+/* Nonzero means print directory before starting and when done (-w).  */
+
+int print_directory_flag = 0;
+
+/* Nonzero means ignore print_directory_flag and never print the directory.
+   This is necessary because print_directory_flag is set implicitly.  */
+
+int inhibit_print_directory_flag = 0;
+
+/* Nonzero means print version information.  */
+
+int print_version_flag = 0;
+
+/* List of makefiles given with -f switches.  */
+
+static struct stringlist *makefiles = 0;
+
+/* Size of the stack when we started.  */
+
+#ifdef SET_STACK_SIZE
+struct rlimit stack_limit;
+#endif
+
+
+/* Number of job slots for parallelism.  */
+
+unsigned int job_slots;
+
+#define INVALID_JOB_SLOTS (-1)
+static unsigned int master_job_slots = 0;
+static int arg_job_slots = INVALID_JOB_SLOTS;
+
+#ifdef KMK
+static int default_job_slots = INVALID_JOB_SLOTS;
+#else
+static const int default_job_slots = INVALID_JOB_SLOTS;
+#endif
+
+/* Value of job_slots that means no limit.  */
+
+static const int inf_jobs = 0;
+
+/* Authorization for the jobserver.  */
+
+static char *jobserver_auth = NULL;
+
+/* Handle for the mutex used on Windows to synchronize output of our
+   children under -O.  */
+
+char *sync_mutex = NULL;
+
+/* Maximum load average at which multiple jobs will be run.
+   Negative values mean unlimited, while zero means limit to
+   zero load (which could be useful to start infinite jobs remotely
+   but one at a time locally).  */
+#ifndef NO_FLOAT
+double max_load_average = -1.0;
+double default_load_average = -1.0;
+#else
+int max_load_average = -1;
+int default_load_average = -1;
+#endif
+
+/* List of directories given with -C switches.  */
+
+static struct stringlist *directories = 0;
+
+/* List of include directories given with -I switches.  */
+
+static struct stringlist *include_directories = 0;
+
+/* List of files given with -o switches.  */
+
+static struct stringlist *old_files = 0;
+
+/* List of files given with -W switches.  */
+
+static struct stringlist *new_files = 0;
+
+/* List of strings to be eval'd.  */
+static struct stringlist *eval_strings = 0;
+
+/* If nonzero, we should just print usage and exit.  */
+
+static int print_usage_flag = 0;
+
+/* If nonzero, we should print a warning message
+   for each reference to an undefined variable.  */
+
+int warn_undefined_variables_flag;
+
+/* If nonzero, always build all targets, regardless of whether
+   they appear out of date or not.  */
+
+static int always_make_set = 0;
+int always_make_flag = 0;
+
+/* If nonzero, we're in the "try to rebuild makefiles" phase.  */
+
+int rebuilding_makefiles = 0;
+
+/* Remember the original value of the SHELL variable, from the environment.  */
+
+struct variable shell_var;
+
+/* This character introduces a command: it's the first char on the line.  */
+
+char cmd_prefix = '\t';
+
+#ifdef KMK
+/* Process priority.
+    0 = no change;
+    1 = idle / max nice;
+    2 = below normal / nice 10;
+    3 = normal / nice 0;
+    4 = high / nice -10;
+    5 = realtime / nice -19; */
+
+int process_priority = 0;
+
+/* Process affinity mask; 0 means any CPU. */
+
+int process_affinity = 0;
+#endif /* KMK */
+
+#if defined (CONFIG_WITH_MAKE_STATS) || defined (CONFIG_WITH_MINIMAL_STATS)
+/* When set, we'll gather expensive statistics like for the heap. */
+
+int make_expensive_statistics = 0;
+#endif
+
+#if defined (WINDOWS32) && defined (CONFIG_NEW_WIN_CHILDREN)
+/* --job-object[=mode]. */
+char *win_job_object_mode = NULL;
+
+/* --job-object-name=name */
+char *win_job_object_name = NULL;
+
+/** --job-object-no-kill.   */
+int win_job_object_no_kill = 0;
+#endif
+
+
+/* The usage output.  We write it this way to make life easier for the
+   translators, especially those trying to translate to right-to-left
+   languages like Hebrew.  */
+
+static const char *const usage[] =
+  {
+    N_("Options:\n"),
+    N_("\
+  -b, -m                      Ignored for compatibility.\n"),
+    N_("\
+  -B, --always-make           Unconditionally make all targets.\n"),
+    N_("\
+  -C DIRECTORY, --directory=DIRECTORY\n\
+                              Change to DIRECTORY before doing anything.\n"),
+    N_("\
+  -d                          Print lots of debugging information.\n"),
+    N_("\
+  --debug[=FLAGS]             Print various types of debugging information.\n"),
+    N_("\
+  -e, --environment-overrides\n\
+                              Environment variables override makefiles.\n"),
+    N_("\
+  --eval=STRING               Evaluate STRING as a makefile statement.\n"),
+    N_("\
+  -f FILE, --file=FILE, --makefile=FILE\n\
+                              Read FILE as a makefile.\n"),
+    N_("\
+  -h, --help                  Print this message and exit.\n"),
+    N_("\
+  -i, --ignore-errors         Ignore errors from recipes.\n"),
+    N_("\
+  -I DIRECTORY, --include-dir=DIRECTORY\n\
+                              Search DIRECTORY for included makefiles.\n"),
+#ifdef KMK
+    N_("\
+  -j [N], --jobs[=N]          Allow N jobs at once; infinite jobs with no arg.\n\
+                              The default is the number of active CPUs.\n"),
+#else
+    N_("\
+  -j [N], --jobs[=N]          Allow N jobs at once; infinite jobs with no arg.\n"),
+#endif
+    N_("\
+  -k, --keep-going            Keep going when some targets can't be made.\n"),
+    N_("\
+  -l [N], --load-average[=N], --max-load[=N]\n\
+                              Don't start multiple jobs unless load is below N.\n"),
+    N_("\
+  -L, --check-symlink-times   Use the latest mtime between symlinks and target.\n"),
+    N_("\
+  -n, --just-print, --dry-run, --recon\n\
+                              Don't actually run any recipe; just print them.\n"),
+    N_("\
+  -o FILE, --old-file=FILE, --assume-old=FILE\n\
+                              Consider FILE to be very old and don't remake it.\n"),
+#ifndef KMK
+    N_("\
+  -O[TYPE], --output-sync[=TYPE]\n\
+                              Synchronize output of parallel jobs by TYPE.\n"),
+#elif defined(KBUILD_OS_WINDOWS)
+    N_("\
+  -O[TYPE], --output-sync[=TYPE]\n\
+                              Synchronize output of parallel jobs by TYPE:\n\
+                                none    = no synchronization.\n\
+                                line    = receip line output\n\
+                                target  = entire receip output (default)\n\
+                                recurse = entire recursive invocation\n"),
+#else
+    N_("\
+  -O[TYPE], --output-sync[=TYPE]\n\
+                              Synchronize output of parallel jobs by TYPE:\n\
+                                none    = no synchronization (default).\n\
+                                line    = receip line output\n\
+                                target  = entire receip output\n\
+                                recurse = entire recursive invocation\n"),
+#endif
+    N_("\
+  -p, --print-data-base       Print make's internal database.\n"),
+    N_("\
+  -q, --question              Run no recipe; exit status says if up to date.\n"),
+    N_("\
+  -r, --no-builtin-rules      Disable the built-in implicit rules.\n"),
+    N_("\
+  -R, --no-builtin-variables  Disable the built-in variable settings.\n"),
+    N_("\
+  -s, --silent, --quiet       Don't echo recipes.\n"),
+    N_("\
+  -S, --no-keep-going, --stop\n\
+                              Turns off -k.\n"),
+    N_("\
+  -t, --touch                 Touch targets instead of remaking them.\n"),
+    N_("\
+  --trace                     Print tracing information.\n"),
+    N_("\
+  -v, --version               Print the version number of make and exit.\n"),
+    N_("\
+  -w, --print-directory       Print the current directory.\n"),
+    N_("\
+  --no-print-directory        Turn off -w, even if it was turned on implicitly.\n"),
+    N_("\
+  -W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE\n\
+                              Consider FILE to be infinitely new.\n"),
+    N_("\
+  --warn-undefined-variables  Warn when an undefined variable is referenced.\n"),
+#ifdef KMK
+    N_("\
+  --affinity=mask             Sets the CPU affinity on some hosts.\n"),
+    N_("\
+  --priority=1-5              Sets the process priority / nice level:\n\
+                                1 = idle / max nice;\n\
+                                2 = below normal / nice 10;\n\
+                                3 = normal / nice 0;\n\
+                                4 = high / nice -10;\n\
+                                5 = realtime / nice -19;\n"),
+    N_("\
+  --nice                      Alias for --priority=1\n"),
+#endif /* KMK */
+#ifdef CONFIG_PRETTY_COMMAND_PRINTING
+    N_("\
+  --pretty-command-printing   Makes the command echo easier to read.\n"),
+#endif
+#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
+    N_("\
+  --print-stats               Print make statistics.\n"),
+#endif
+#ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+    N_("\
+  --print-time[=MIN-SEC]      Print file build times starting at arg.\n"),
+#endif
+#ifdef CONFIG_WITH_MAKE_STATS
+    N_("\
+  --statistics                Gather extra statistics for $(make-stats ).\n"),
+#endif
+#if defined (WINDOWS32) && defined (CONFIG_NEW_WIN_CHILDREN)
+    N_("\
+  --job-object=mode           Windows job object mode:\n\
+                                login = Per login session (default).\n\
+                                root  = Root make instance only.\n\
+                                each  = Each make instances.\n\
+                                none  = No job objects.\n"),
+    N_("\
+  --job-object-name=name      Name of windows job object to open or create.\n\
+                              The default name depends on the level.\n"),
+    N_("\
+  --job-object-no-kill        Do not kill orphaned child processes when done.\n"),
+#endif
+    NULL
+  };
+
+/* The table of command switches.
+   Order matters here: this is the order MAKEFLAGS will be constructed.
+   So be sure all simple flags (single char, no argument) come first.  */
+
+static const struct command_switch switches[] =
+  {
+    { 'b', ignore, 0, 0, 0, 0, 0, 0, 0 },
+    { 'B', flag, &always_make_set, 1, 1, 0, 0, 0, "always-make" },
+    { 'd', flag, &debug_flag, 1, 1, 0, 0, 0, 0 },
+#ifdef WINDOWS32
+    { 'D', flag, &suspend_flag, 1, 1, 0, 0, 0, "suspend-for-debug" },
+#endif
+    { 'e', flag, &env_overrides, 1, 1, 0, 0, 0, "environment-overrides", },
+    { 'h', flag, &print_usage_flag, 0, 0, 0, 0, 0, "help" },
+    { 'i', flag, &ignore_errors_flag, 1, 1, 0, 0, 0, "ignore-errors" },
+    { 'k', flag, &keep_going_flag, 1, 1, 0, 0, &default_keep_going_flag,
+      "keep-going" },
+    { 'L', flag, &check_symlink_flag, 1, 1, 0, 0, 0, "check-symlink-times" },
+    { 'm', ignore, 0, 0, 0, 0, 0, 0, 0 },
+    { 'n', flag, &just_print_flag, 1, 1, 1, 0, 0, "just-print" },
+    { 'p', flag, &print_data_base_flag, 1, 1, 0, 0, 0, "print-data-base" },
+#ifdef CONFIG_PRETTY_COMMAND_PRINTING
+    { CHAR_MAX+50, flag, (char *) &pretty_command_printing, 1, 1, 1, 0, 0,
+       "pretty-command-printing" },
+#endif
+#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
+    { CHAR_MAX+51, flag, (char *) &print_stats_flag, 1, 1, 1, 0, 0,
+       "print-stats" },
+#endif
+#ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+    { CHAR_MAX+52, positive_int, (char *) &print_time_min, 1, 1, 0,
+      (char *) &no_val_print_time_min, (char *) &default_print_time_min,
+      "print-time" },
+#endif
+#ifdef KMK
+    { CHAR_MAX+54, positive_int, (char *) &process_priority, 1, 1, 0,
+      (char *) &process_priority, (char *) &process_priority, "priority" },
+    { CHAR_MAX+55, positive_int, (char *) &process_affinity, 1, 1, 0,
+      (char *) &process_affinity, (char *) &process_affinity, "affinity" },
+    { CHAR_MAX+56, flag, (char *) &process_priority, 1, 1, 0, 0, 0, "nice" },
+#endif
+    { 'q', flag, &question_flag, 1, 1, 1, 0, 0, "question" },
+    { 'r', flag, &no_builtin_rules_flag, 1, 1, 0, 0, 0, "no-builtin-rules" },
+    { 'R', flag, &no_builtin_variables_flag, 1, 1, 0, 0, 0,
+      "no-builtin-variables" },
+    { 's', flag, &silent_flag, 1, 1, 0, 0, 0, "silent" },
+    { 'S', flag_off, &keep_going_flag, 1, 1, 0, 0, &default_keep_going_flag,
+      "no-keep-going" },
+#if defined (CONFIG_WITH_MAKE_STATS) || defined (CONFIG_WITH_MINIMAL_STATS)
+    { CHAR_MAX+57, flag, (char *) &make_expensive_statistics, 1, 1, 1, 0, 0,
+       "statistics" },
+#endif
+    { 't', flag, &touch_flag, 1, 1, 1, 0, 0, "touch" },
+    { 'v', flag, &print_version_flag, 1, 1, 0, 0, 0, "version" },
+    { 'w', flag, &print_directory_flag, 1, 1, 0, 0, 0, "print-directory" },
+
+    /* These options take arguments.  */
+    { 'C', filename, &directories, 0, 0, 0, 0, 0, "directory" },
+    { 'f', filename, &makefiles, 0, 0, 0, 0, 0, "file" },
+    { 'I', filename, &include_directories, 1, 1, 0, 0, 0,
+      "include-dir" },
+    { 'j', positive_int, &arg_job_slots, 1, 1, 0, &inf_jobs, &default_job_slots,
+      "jobs" },
+#ifndef NO_FLOAT
+    { 'l', floating, &max_load_average, 1, 1, 0, &default_load_average,
+      &default_load_average, "load-average" },
+#else
+    { 'l', positive_int, &max_load_average, 1, 1, 0, &default_load_average,
+      &default_load_average, "load-average" },
+#endif
+    { 'o', filename, &old_files, 0, 0, 0, 0, 0, "old-file" },
+    { 'O', string, &output_sync_option, 1, 1, 0, "target", 0, "output-sync" },
+    { 'W', filename, &new_files, 0, 0, 0, 0, 0, "what-if" },
+
+    /* These are long-style options.  */
+    { CHAR_MAX+1, strlist, &db_flags, 1, 1, 0, "basic", 0, "debug" },
+    { CHAR_MAX+2, string, &jobserver_auth, 1, 1, 0, 0, 0, "jobserver-auth" },
+    { CHAR_MAX+3, flag, &trace_flag, 1, 1, 0, 0, 0, "trace" },
+    { CHAR_MAX+4, flag, &inhibit_print_directory_flag, 1, 1, 0, 0, 0,
+      "no-print-directory" },
+    { CHAR_MAX+5, flag, &warn_undefined_variables_flag, 1, 1, 0, 0, 0,
+      "warn-undefined-variables" },
+    { CHAR_MAX+6, strlist, &eval_strings, 1, 0, 0, 0, 0, "eval" },
+    { CHAR_MAX+7, string, &sync_mutex, 1, 1, 0, 0, 0, "sync-mutex" },
+#if defined (WINDOWS32) && defined (CONFIG_NEW_WIN_CHILDREN)
+    { CHAR_MAX+58, string, &win_job_object_mode, 1, 1, 1, 0, 0, "job-object" },
+    { CHAR_MAX+59, string, &win_job_object_name, 1, 1, 1, 0, 0,
+      "job-object-name" },
+    { CHAR_MAX+60, flag, &win_job_object_no_kill, 1, 1, 1, 0, 0,
+      "job-object-no-kill" },
+#endif
+    { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
+  };
+
+/* Secondary long names for options.  */
+
+static struct option long_option_aliases[] =
+  {
+    { "quiet",          no_argument,            0, 's' },
+    { "stop",           no_argument,            0, 'S' },
+    { "new-file",       required_argument,      0, 'W' },
+    { "assume-new",     required_argument,      0, 'W' },
+    { "assume-old",     required_argument,      0, 'o' },
+    { "max-load",       optional_argument,      0, 'l' },
+    { "dry-run",        no_argument,            0, 'n' },
+    { "recon",          no_argument,            0, 'n' },
+    { "makefile",       required_argument,      0, 'f' },
+  };
+
+/* List of goal targets.  */
+
+#ifndef KMK
+static
+#endif
+struct goaldep *goals, *lastgoal;
+
+/* List of variables which were defined on the command line
+   (or, equivalently, in MAKEFLAGS).  */
+
+struct command_variable
+  {
+    struct command_variable *next;
+    struct variable *variable;
+  };
+static struct command_variable *command_variables;
+
+/* The name we were invoked with.  */
+
+#ifdef WINDOWS32
+/* On MS-Windows, we chop off the .exe suffix in 'main', so this
+   cannot be 'const'.  */
+char *program;
+#else
+const char *program;
+#endif
+
+/* Our current directory before processing any -C options.  */
+
+char *directory_before_chdir;
+
+/* Our current directory after processing all -C options.  */
+
+char *starting_directory;
+
+/* Value of the MAKELEVEL variable at startup (or 0).  */
+
+unsigned int makelevel;
+
+/* Pointer to the value of the .DEFAULT_GOAL special variable.
+   The value will be the name of the goal to remake if the command line
+   does not override it.  It can be set by the makefile, or else it's
+   the first target defined in the makefile whose name does not start
+   with '.'.  */
+
+struct variable * default_goal_var;
+
+/* Pointer to structure for the file .DEFAULT
+   whose commands are used for any file that has none of its own.
+   This is zero if the makefiles do not define .DEFAULT.  */
+
+struct file *default_file;
+
+/* Nonzero if we have seen the magic '.POSIX' target.
+   This turns on pedantic compliance with POSIX.2.  */
+
+int posix_pedantic;
+
+/* Nonzero if we have seen the '.SECONDEXPANSION' target.
+   This turns on secondary expansion of prerequisites.  */
+
+int second_expansion;
+
+#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
+/* Nonzero if we have seen the '.SECONDTARGETEXPANSION' target.
+   This turns on secondary expansion of targets.  */
+
+int second_target_expansion;
+#endif
+
+/* Nonzero if we have seen the '.ONESHELL' target.
+   This causes the entire recipe to be handed to SHELL
+   as a single string, potentially containing newlines.  */
+
+int one_shell;
+
+/* One of OUTPUT_SYNC_* if the "--output-sync" option was given.  This
+   attempts to synchronize the output of parallel jobs such that the results
+   of each job stay together.  */
+
+#ifdef KMK
+int output_sync = OUTPUT_SYNC_TARGET;
+#else
+int output_sync = OUTPUT_SYNC_NONE;
+#endif
+
+/* Nonzero if the "--trace" option was given.  */
+
+int trace_flag = 0;
+
+#ifndef CONFIG_WITH_EXTENDED_NOTPARALLEL
+
+/* Nonzero if we have seen the '.NOTPARALLEL' target.
+   This turns off parallel builds for this invocation of make.  */
+
+#else  /* CONFIG_WITH_EXTENDED_NOTPARALLEL */
+
+/* Negative if we have seen the '.NOTPARALLEL' target with an
+   empty dependency list.
+
+   Zero if no '.NOTPARALLEL' or no file in the dependency list
+   is being executed.
+
+   Positive when a file in the '.NOTPARALLEL' dependency list
+   is in progress, the value is the number of notparallel files
+   in progress (running or queued for running).
+
+   In short, any nonzero value means no more parallel builing. */
+#endif /* CONFIG_WITH_EXTENDED_NOTPARALLEL */
+
+int not_parallel;
+
+/* Nonzero if some rule detected clock skew; we keep track so (a) we only
+   print one warning about it during the run, and (b) we can print a final
+   warning at the end of the run. */
+
+int clock_skew_detected;
+
+/* Map of possible stop characters for searching strings.  */
+#ifndef UCHAR_MAX
+# define UCHAR_MAX 255
+#endif
+#ifdef _MSC_VER
+__declspec(align(512)) /* bird: improve cacheline & tlb mojo  */
+#endif
+unsigned short stopchar_map[UCHAR_MAX + 1] = {0};
+
+/* If output-sync is enabled we'll collect all the output generated due to
+   options, while reading makefiles, etc.  */
+
+struct output make_sync;
+
+#ifdef KMK
+/** Current umask() value. */
+mode_t g_fUMask = 0022;
+#endif
+
+
+/* Mask of signals that are being caught with fatal_error_signal.  */
+
+#ifdef POSIX
+sigset_t fatal_signal_set;
+#else
+# ifdef HAVE_SIGSETMASK
+int fatal_signal_mask;
+# endif
+#endif
+
+#if !HAVE_DECL_BSD_SIGNAL && !defined bsd_signal
+# if !defined HAVE_SIGACTION
+#  define bsd_signal signal
+# else
+typedef RETSIGTYPE (*bsd_signal_ret_t) (int);
+
+static bsd_signal_ret_t
+bsd_signal (int sig, bsd_signal_ret_t func)
+{
+  struct sigaction act, oact;
+  act.sa_handler = func;
+  act.sa_flags = SA_RESTART;
+  sigemptyset (&act.sa_mask);
+  sigaddset (&act.sa_mask, sig);
+  if (sigaction (sig, &act, &oact) != 0)
+    return SIG_ERR;
+  return oact.sa_handler;
+}
+# endif
+#endif
+
+#ifdef CONFIG_WITH_ALLOC_CACHES
+struct alloccache dep_cache;
+struct alloccache goaldep_cache;
+struct alloccache nameseq_cache;
+struct alloccache file_cache;
+struct alloccache commands_cache;
+struct alloccache variable_cache;
+struct alloccache variable_set_cache;
+struct alloccache variable_set_list_cache;
+
+static void
+initialize_global_alloc_caches (void)
+{
+  alloccache_init (&dep_cache,               sizeof (struct dep),               "dep",               NULL, NULL);
+  alloccache_init (&goaldep_cache,           sizeof (struct goaldep),           "goaldep",           NULL, NULL);
+  alloccache_init (&nameseq_cache,           sizeof (struct nameseq),           "nameseq",           NULL, NULL);
+  alloccache_init (&file_cache,              sizeof (struct file),              "file",              NULL, NULL);
+  alloccache_init (&commands_cache,          sizeof (struct commands),          "commands",          NULL, NULL);
+  alloccache_init (&variable_cache,          sizeof (struct variable),          "variable",          NULL, NULL);
+  alloccache_init (&variable_set_cache,      sizeof (struct variable_set),      "variable_set",      NULL, NULL);
+  alloccache_init (&variable_set_list_cache, sizeof (struct variable_set_list), "variable_set_list", NULL, NULL);
+}
+#endif /* CONFIG_WITH_ALLOC_CACHES */
+
+static void
+initialize_global_hash_tables (void)
+{
+  init_hash_global_variable_set ();
+  strcache_init ();
+  init_hash_files ();
+  hash_init_directories ();
+  hash_init_function_table ();
+}
+
+/* This character map locate stop chars when parsing GNU makefiles.
+   Each element is true if we should stop parsing on that character.  */
+
+static void
+initialize_stopchar_map (void)
+{
+  int i;
+
+  stopchar_map[(int)'\0'] = MAP_NUL;
+  stopchar_map[(int)'#'] = MAP_COMMENT;
+  stopchar_map[(int)';'] = MAP_SEMI;
+  stopchar_map[(int)'='] = MAP_EQUALS;
+  stopchar_map[(int)':'] = MAP_COLON;
+  stopchar_map[(int)'%'] = MAP_PERCENT;
+  stopchar_map[(int)'|'] = MAP_PIPE;
+  stopchar_map[(int)'.'] = MAP_DOT | MAP_USERFUNC;
+  stopchar_map[(int)','] = MAP_COMMA;
+  stopchar_map[(int)'$'] = MAP_VARIABLE;
+
+  stopchar_map[(int)'-'] = MAP_USERFUNC;
+  stopchar_map[(int)'_'] = MAP_USERFUNC;
+
+  stopchar_map[(int)' '] = MAP_BLANK;
+  stopchar_map[(int)'\t'] = MAP_BLANK;
+
+  stopchar_map[(int)'/'] = MAP_DIRSEP;
+#if defined(VMS)
+  stopchar_map[(int)':'] |= MAP_DIRSEP;
+  stopchar_map[(int)']'] |= MAP_DIRSEP;
+  stopchar_map[(int)'>'] |= MAP_DIRSEP;
+#elif defined(HAVE_DOS_PATHS)
+  stopchar_map[(int)'\\'] |= MAP_DIRSEP;
+#endif
+
+  for (i = 1; i <= UCHAR_MAX; ++i)
+    {
+      if (isspace (i) && NONE_SET (stopchar_map[i], MAP_BLANK))
+        /* Don't mark blank characters as newline characters.  */
+        stopchar_map[i] |= MAP_NEWLINE;
+      else if (isalnum (i))
+        stopchar_map[i] |= MAP_USERFUNC;
+    }
+}
+
+static const char *
+expand_command_line_file (const char *name)
+{
+  const char *cp;
+  char *expanded = 0;
+
+  if (name[0] == '\0')
+    O (fatal, NILF, _("empty string invalid as file name"));
+
+  if (name[0] == '~')
+    {
+      expanded = tilde_expand (name);
+      if (expanded && expanded[0] != '\0')
+        name = expanded;
+    }
+
+  /* This is also done in parse_file_seq, so this is redundant
+     for names read from makefiles.  It is here for names passed
+     on the command line.  */
+  while (name[0] == '.' && name[1] == '/')
+    {
+      name += 2;
+      while (name[0] == '/')
+        /* Skip following slashes: ".//foo" is "foo", not "/foo".  */
+        ++name;
+    }
+
+  if (name[0] == '\0')
+    {
+      /* Nothing else but one or more "./", maybe plus slashes!  */
+      name = "./";
+    }
+
+  cp = strcache_add (name);
+
+  free (expanded);
+
+  return cp;
+}
+
+/* Toggle -d on receipt of SIGUSR1.  */
+
+#ifdef SIGUSR1
+static RETSIGTYPE
+debug_signal_handler (int sig UNUSED)
+{
+  db_level = db_level ? DB_NONE : DB_BASIC;
+}
+#endif
+
+static void
+decode_debug_flags (void)
+{
+  const char **pp;
+
+  if (debug_flag)
+    db_level = DB_ALL;
+
+  if (db_flags)
+    for (pp=db_flags->list; *pp; ++pp)
+      {
+        const char *p = *pp;
+
+        while (1)
+          {
+            switch (tolower (p[0]))
+              {
+              case 'a':
+                db_level |= DB_ALL;
+                break;
+              case 'b':
+                db_level |= DB_BASIC;
+                break;
+              case 'i':
+                db_level |= DB_BASIC | DB_IMPLICIT;
+                break;
+              case 'j':
+                db_level |= DB_JOBS;
+                break;
+              case 'm':
+                db_level |= DB_BASIC | DB_MAKEFILES;
+                break;
+              case 'n':
+                db_level = 0;
+                break;
+              case 'v':
+                db_level |= DB_BASIC | DB_VERBOSE;
+                break;
+#ifdef DB_KMK
+              case 'k':
+                db_level |= DB_KMK;
+                break;
+#endif /* DB_KMK */
+              default:
+                OS (fatal, NILF,
+                    _("unknown debug level specification '%s'"), p);
+              }
+
+            while (*(++p) != '\0')
+              if (*p == ',' || *p == ' ')
+                {
+                  ++p;
+                  break;
+                }
+
+            if (*p == '\0')
+              break;
+          }
+      }
+
+  if (db_level)
+    verify_flag = 1;
+
+  if (! db_level)
+    debug_flag = 0;
+}
+
+static void
+decode_output_sync_flags (void)
+{
+#ifdef NO_OUTPUT_SYNC
+  output_sync = OUTPUT_SYNC_NONE;
+#else
+  if (output_sync_option)
+    {
+      if (streq (output_sync_option, "none"))
+        output_sync = OUTPUT_SYNC_NONE;
+      else if (streq (output_sync_option, "line"))
+        output_sync = OUTPUT_SYNC_LINE;
+      else if (streq (output_sync_option, "target"))
+        output_sync = OUTPUT_SYNC_TARGET;
+      else if (streq (output_sync_option, "recurse"))
+        output_sync = OUTPUT_SYNC_RECURSE;
+      else
+        OS (fatal, NILF,
+            _("unknown output-sync type '%s'"), output_sync_option);
+    }
+
+  if (sync_mutex)
+    RECORD_SYNC_MUTEX (sync_mutex);
+#endif
+}
+
+
+#ifdef KMK
+static void
+set_make_priority_and_affinity (void)
+{
+# ifdef WINDOWS32
+  DWORD dwClass, dwPriority;
+
+  if (process_affinity)
+    if (!SetProcessAffinityMask (GetCurrentProcess (), process_affinity))
+      fprintf (stderr, "warning: SetProcessAffinityMask (,%#x) failed with last error %d\n",
+               process_affinity, GetLastError ());
+
+  switch (process_priority)
+    {
+      case 0:     return;
+      case 1:     dwClass = IDLE_PRIORITY_CLASS;         dwPriority = THREAD_PRIORITY_IDLE; break;
+      case 2:     dwClass = BELOW_NORMAL_PRIORITY_CLASS; dwPriority = THREAD_PRIORITY_BELOW_NORMAL; break;
+      case 3:     dwClass = NORMAL_PRIORITY_CLASS;       dwPriority = THREAD_PRIORITY_NORMAL; break;
+      case 4:     dwClass = HIGH_PRIORITY_CLASS;         dwPriority = 0xffffffff; break;
+      case 5:     dwClass = REALTIME_PRIORITY_CLASS;     dwPriority = 0xffffffff; break;
+      default:    ON (fatal, NILF, _("invalid priority %d\n"), process_priority);
+    }
+  if (!SetPriorityClass (GetCurrentProcess (), dwClass))
+    fprintf (stderr, "warning: SetPriorityClass (,%#x) failed with last error %d\n",
+             dwClass, GetLastError ());
+  if (dwPriority != 0xffffffff
+      && !SetThreadPriority (GetCurrentThread (), dwPriority))
+    fprintf (stderr, "warning: SetThreadPriority (,%#x) failed with last error %d\n",
+             dwPriority, GetLastError ());
+
+#elif defined(__HAIKU__)
+  int32 iNewPriority;
+  status_t error;
+
+  switch (process_priority)
+    {
+      case 0:     return;
+      case 1:     iNewPriority = B_LOWEST_ACTIVE_PRIORITY; break;
+      case 2:     iNewPriority = B_LOW_PRIORITY; break;
+      case 3:     iNewPriority = B_NORMAL_PRIORITY; break;
+      case 4:     iNewPriority = B_URGENT_DISPLAY_PRIORITY; break;
+      case 5:     iNewPriority = B_REAL_TIME_DISPLAY_PRIORITY; break;
+      default:    ON (fatal, NILF, _("invalid priority %d\n"), process_priority);
+    }
+  error = set_thread_priority (find_thread (NULL), iNewPriority);
+  if (error != B_OK)
+    fprintf (stderr, "warning: set_thread_priority (,%d) failed: %s\n",
+             iNewPriority, strerror (error));
+
+# else /*#elif HAVE_NICE */
+  int nice_level = 0;
+  switch (process_priority)
+    {
+      case 0:     return;
+      case 1:     nice_level = 19; break;
+      case 2:     nice_level = 10; break;
+      case 3:     nice_level = 0; break;
+      case 4:     nice_level = -10; break;
+      case 5:     nice_level = -19; break;
+      default:    ON (fatal, NILF, _("invalid priority %d\n"), process_priority);
+    }
+  errno = 0;
+  if (nice (nice_level) == -1 && errno != 0)
+    fprintf (stderr, "warning: nice (%d) failed: %s\n",
+             nice_level, strerror (errno));
+# endif
+}
+#endif /* KMK */
+
+
+#ifdef WINDOWS32
+
+#ifndef NO_OUTPUT_SYNC
+
+/* This is called from start_job_command when it detects that
+   output_sync option is in effect.  The handle to the synchronization
+   mutex is passed, as a string, to sub-makes via the --sync-mutex
+   command-line argument.  */
+void
+# ifdef CONFIG_NEW_WIN_CHILDREN
+prepare_mutex_handle_string (const char *mtxname)
+{
+  if (!sync_mutex)
+    {
+      sync_mutex = xstrdup(mtxname);
+      define_makeflags (1, 0);
+    }
+}
+# else
+prepare_mutex_handle_string (sync_handle_t handle)
+{
+  if (!sync_mutex)
+    {
+      /* Prepare the mutex handle string for our children.  */
+      /* 2 hex digits per byte + 2 characters for "0x" + null.  */
+      sync_mutex = xmalloc ((2 * sizeof (sync_handle_t)) + 2 + 1);
+      sprintf (sync_mutex, "0x%Ix", handle);
+      define_makeflags (1, 0);
+    }
+}
+# endif
+
+#endif  /* NO_OUTPUT_SYNC */
+
+# ifndef KMK /* I'd rather have WER collect dumps. */
+/*
+ * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
+ * exception and print it to stderr instead.
+ *
+ * If ! DB_VERBOSE, just print a simple message and exit.
+ * If DB_VERBOSE, print a more verbose message.
+ * If compiled for DEBUG, let exception pass through to GUI so that
+ *   debuggers can attach.
+ */
+LONG WINAPI
+handle_runtime_exceptions (struct _EXCEPTION_POINTERS *exinfo)
+{
+  PEXCEPTION_RECORD exrec = exinfo->ExceptionRecord;
+  LPSTR cmdline = GetCommandLine ();
+  LPSTR prg = strtok (cmdline, " ");
+  CHAR errmsg[1024];
+#ifdef USE_EVENT_LOG
+  HANDLE hEventSource;
+  LPTSTR lpszStrings[1];
+#endif
+
+  if (! ISDB (DB_VERBOSE))
+    {
+      sprintf (errmsg,
+               _("%s: Interrupt/Exception caught (code = 0x%lx, addr = 0x%p)\n"),
+               prg, exrec->ExceptionCode, exrec->ExceptionAddress);
+      fprintf (stderr, errmsg);
+      exit (255);
+    }
+
+  sprintf (errmsg,
+           _("\nUnhandled exception filter called from program %s\nExceptionCode = %lx\nExceptionFlags = %lx\nExceptionAddress = 0x%p\n"),
+           prg, exrec->ExceptionCode, exrec->ExceptionFlags,
+           exrec->ExceptionAddress);
+
+  if (exrec->ExceptionCode == EXCEPTION_ACCESS_VIOLATION
+      && exrec->NumberParameters >= 2)
+    sprintf (&errmsg[strlen(errmsg)],
+             (exrec->ExceptionInformation[0]
+              ? _("Access violation: write operation at address 0x%p\n")
+              : _("Access violation: read operation at address 0x%p\n")),
+             (PVOID)exrec->ExceptionInformation[1]);
+
+  /* turn this on if we want to put stuff in the event log too */
+#ifdef USE_EVENT_LOG
+  hEventSource = RegisterEventSource (NULL, "GNU Make");
+  lpszStrings[0] = errmsg;
+
+  if (hEventSource != NULL)
+    {
+      ReportEvent (hEventSource,         /* handle of event source */
+                   EVENTLOG_ERROR_TYPE,  /* event type */
+                   0,                    /* event category */
+                   0,                    /* event ID */
+                   NULL,                 /* current user's SID */
+                   1,                    /* strings in lpszStrings */
+                   0,                    /* no bytes of raw data */
+                   lpszStrings,          /* array of error strings */
+                   NULL);                /* no raw data */
+
+      (VOID) DeregisterEventSource (hEventSource);
+    }
+#endif
+
+  /* Write the error to stderr too */
+  fprintf (stderr, errmsg);
+
+#ifdef DEBUG
+  return EXCEPTION_CONTINUE_SEARCH;
+#else
+  exit (255);
+  return (255); /* not reached */
+#endif
+}
+# endif /* !KMK */
+
+/*
+ * On WIN32 systems we don't have the luxury of a /bin directory that
+ * is mapped globally to every drive mounted to the system. Since make could
+ * be invoked from any drive, and we don't want to propagate /bin/sh
+ * to every single drive. Allow ourselves a chance to search for
+ * a value for default shell here (if the default path does not exist).
+ */
+
+int
+find_and_set_default_shell (const char *token)
+{
+  int sh_found = 0;
+  char *atoken = 0;
+  const char *search_token;
+  const char *tokend;
+  PATH_VAR(sh_path);
+  extern const char *default_shell;
+
+  if (!token)
+    search_token = default_shell;
+  else
+    search_token = atoken = xstrdup (token);
+
+  /* If the user explicitly requests the DOS cmd shell, obey that request.
+     However, make sure that's what they really want by requiring the value
+     of SHELL either equal, or have a final path element of, "cmd" or
+     "cmd.exe" case-insensitive.  */
+  tokend = search_token + strlen (search_token) - 3;
+  if (((tokend == search_token
+        || (tokend > search_token
+            && (tokend[-1] == '/' || tokend[-1] == '\\')))
+       && !strcasecmp (tokend, "cmd"))
+      || ((tokend - 4 == search_token
+           || (tokend - 4 > search_token
+               && (tokend[-5] == '/' || tokend[-5] == '\\')))
+          && !strcasecmp (tokend - 4, "cmd.exe")))
+    {
+      batch_mode_shell = 1;
+      unixy_shell = 0;
+# if 1  /* bird: sprintf? wtf. */
+      default_shell = unix_slashes (xstrdup (search_token));
+# else
+      sprintf (sh_path, "%s", search_token);
+      default_shell = xstrdup (w32ify (sh_path, 0));
+# endif
+      DB (DB_VERBOSE, (_("find_and_set_shell() setting default_shell = %s\n"),
+                       default_shell));
+      sh_found = 1;
+    }
+  else if (!no_default_sh_exe
+           && (token == NULL || !strcmp (search_token, default_shell)))
+    {
+      /* no new information, path already set or known */
+      sh_found = 1;
+    }
+  else if (_access (search_token, 0) == 0)
+    {
+      /* search token path was found */
+# if 1  /* bird: sprintf? wtf. */
+      default_shell = unix_slashes (xstrdup (search_token));
+# else
+      sprintf (sh_path, "%s", search_token);
+      default_shell = xstrdup (w32ify (sh_path, 0));
+# endif
+      DB (DB_VERBOSE, (_("find_and_set_shell() setting default_shell = %s\n"),
+                       default_shell));
+      sh_found = 1;
+    }
+  else
+    {
+      char *p;
+      struct variable *v = lookup_variable (STRING_SIZE_TUPLE ("PATH"));
+
+      /* Search Path for shell */
+      if (v && v->value)
+        {
+          char *ep;
+
+          p  = v->value;
+          ep = strchr (p, PATH_SEPARATOR_CHAR);
+
+          while (ep && *ep)
+            {
+              *ep = '\0';
+
+# if 1 /* bird: insanity insurance */
+              _snprintf (sh_path, GET_PATH_MAX, "%s/%s", p, search_token);
+# else
+              sprintf (sh_path, "%s/%s", p, search_token);
+# endif
+              if (_access (sh_path, 0) == 0)
+                {
+# if 1  /* bird: we can modify sh_path directly. */
+                  default_shell = xstrdup (unix_slashes (sh_path));
+# else
+                  default_shell = xstrdup (w32ify (sh_path, 0));
+# endif
+                  sh_found = 1;
+                  *ep = PATH_SEPARATOR_CHAR;
+
+                  /* terminate loop */
+                  p += strlen (p);
+                }
+              else
+                {
+                  *ep = PATH_SEPARATOR_CHAR;
+                  p = ++ep;
+                }
+
+              ep = strchr (p, PATH_SEPARATOR_CHAR);
+            }
+
+          /* be sure to check last element of Path */
+          if (p && *p)
+            {
+# if 1 /* bird: insanity insurance */
+              _snprintf (sh_path, GET_PATH_MAX, "%s/%s", p, search_token);
+# else
+              sprintf (sh_path, "%s/%s", p, search_token);
+# endif
+              if (_access (sh_path, 0) == 0)
+                {
+# if 1  /* bird: we can modify sh_path directly. */
+                  default_shell = xstrdup (unix_slashes (sh_path));
+# else
+                  default_shell = xstrdup (w32ify (sh_path, 0));
+# endif
+                  sh_found = 1;
+                }
+            }
+
+          if (sh_found)
+            DB (DB_VERBOSE,
+                (_("find_and_set_shell() path search set default_shell = %s\n"),
+                 default_shell));
+        }
+    }
+
+  /* naive test */
+  if (!unixy_shell && sh_found
+      && (strstr (default_shell, "sh") || strstr (default_shell, "SH")))
+    {
+      unixy_shell = 1;
+      batch_mode_shell = 0;
+    }
+
+#ifdef BATCH_MODE_ONLY_SHELL
+  batch_mode_shell = 1;
+#endif
+
+  free (atoken);
+
+  return (sh_found);
+}
+
+/* bird: */
+#ifdef CONFIG_NEW_WIN32_CTRL_EVENT
+#include <process.h>
+static UINT g_tidMainThread = 0;
+static int volatile g_sigPending = 0; /* lazy bird */
+# ifndef _M_IX86
+static LONG volatile g_lTriggered = 0;
+static CONTEXT g_Ctx;
+# endif
+
+# ifdef _M_IX86
+static __declspec(naked) void dispatch_stub(void)
+{
+    __asm  {
+        pushfd
+        pushad
+        cld
+    }
+    fflush(stdout);
+    /*fprintf(stderr, "dbg: raising %s on the main thread (%d)\n", g_sigPending == SIGINT ? "SIGINT" : "SIGBREAK", _getpid());*/
+    raise(g_sigPending);
+    __asm  {
+        popad
+        popfd
+        ret
+    }
+}
+# else /* !_M_IX86 */
+static void dispatch_stub(void)
+{
+    fflush(stdout);
+    /*fprintf(stderr, "dbg: raising %s on the main thread (%d)\n", g_sigPending == SIGINT ? "SIGINT" : "SIGBREAK", _getpid());*/
+    raise(g_sigPending);
+
+    SetThreadContext(GetCurrentThread(), &g_Ctx);
+    fprintf(stderr, "fatal error: SetThreadContext failed with last error %d\n", GetLastError());
+    for (;;)
+        exit(131);
+}
+# endif /* !_M_IX86 */
+
+static BOOL WINAPI ctrl_event(DWORD CtrlType)
+{
+    int sig = (CtrlType == CTRL_C_EVENT) ? SIGINT : SIGBREAK;
+    HANDLE hThread;
+    CONTEXT Ctx;
+
+    /*fprintf(stderr, "dbg: ctrl_event sig=%d\n", sig);*/
+#ifndef _M_IX86
+    /* only once. */
+    if (InterlockedExchange(&g_lTriggered, 1))
+    {
+        Sleep(1);
+        return TRUE;
+    }
+#endif
+
+    /* open the main thread and suspend it. */
+    hThread = OpenThread(THREAD_ALL_ACCESS, FALSE, g_tidMainThread);
+    SuspendThread(hThread);
+
+    /* Get the thread context and if we've get a valid Esp, dispatch
+       it on the main thread otherwise raise the signal in the
+       ctrl-event thread (this). */
+    memset(&Ctx, 0, sizeof(Ctx));
+    Ctx.ContextFlags = CONTEXT_FULL;
+    if (GetThreadContext(hThread, &Ctx)
+#ifdef _M_IX86
+        && Ctx.Esp >= 0x1000
+#else
+        && Ctx.Rsp >= 0x1000
+#endif
+       )
+    {
+#ifdef _M_IX86
+        ((uintptr_t *)Ctx.Esp)[-1] = Ctx.Eip;
+        Ctx.Esp -= sizeof(uintptr_t);
+        Ctx.Eip = (uintptr_t)&dispatch_stub;
+#else
+        g_Ctx = Ctx;
+        Ctx.Rsp -= 0x80;
+        Ctx.Rsp &= ~(uintptr_t)0xf;
+        Ctx.Rsp += 8;   /* (Stack aligned before call instruction, not after.) */
+        Ctx.Rip  = (uintptr_t)&dispatch_stub;
+#endif
+
+        SetThreadContext(hThread, &Ctx);
+        g_sigPending = sig;
+        ResumeThread(hThread);
+        CloseHandle(hThread);
+    }
+    else
+    {
+        fprintf(stderr, "dbg: raising %s on the ctrl-event thread (%d)\n", sig == SIGINT ? "SIGINT" : "SIGBREAK", _getpid());
+        raise(sig);
+        ResumeThread(hThread);
+        CloseHandle(hThread);
+        exit(130);
+    }
+
+    Sleep(1);
+    return TRUE;
+}
+#endif /* CONFIG_NEW_WIN32_CTRL_EVENT */
+
+#endif  /* WINDOWS32 */
+
+#ifdef KMK
+/* Determins the number of CPUs that are currently online.
+   This is used to setup the default number of job slots. */
+static int
+get_online_cpu_count(void)
+{
+# ifdef WINDOWS32
+    /* Windows: Count the active CPUs. */
+    int cpus;
+
+    /* Process groups (W7+). */
+    typedef DWORD (WINAPI *PFNGETACTIVEPROCESSORCOUNT)(DWORD);
+    PFNGETACTIVEPROCESSORCOUNT pfnGetActiveProcessorCount;
+    pfnGetActiveProcessorCount = (PFNGETACTIVEPROCESSORCOUNT)GetProcAddress(GetModuleHandleW(L"kernel32.dll"),
+                                                                            "GetActiveProcessorCount");
+    if (pfnGetActiveProcessorCount)
+      cpus = pfnGetActiveProcessorCount(ALL_PROCESSOR_GROUPS);
+    /* Legacy (<= Vista). */
+    else
+      {
+        int i;
+        SYSTEM_INFO si;
+        GetSystemInfo(&si);
+        for (i = cpus = 0; i < sizeof(si.dwActiveProcessorMask) * 8; i++)
+          {
+            if (si.dwActiveProcessorMask & 1)
+              cpus++;
+            si.dwActiveProcessorMask >>= 1;
+          }
+      }
+    if (!cpus)
+      cpus = 1;
+#  ifndef CONFIG_NEW_WIN_CHILDREN
+    if (cpus > 64)
+      cpus = 64; /* (wait for multiple objects limit) */
+#  endif
+    return cpus;
+
+# elif defined(__OS2__)
+    /* OS/2: Count the active CPUs. */
+    int cpus, i, j;
+    MPAFFINITY mp;
+    if (DosQueryThreadAffinity(AFNTY_SYSTEM, &mp))
+      return 1;
+    for (j = cpus = 0; j < sizeof(mp.mask) / sizeof(mp.mask[0]); j++)
+      for (i = 0; i < 32; i++)
+        if (mp.mask[j] & (1UL << i))
+          cpus++;
+    return cpus ? cpus : 1;
+
+# else
+  /* UNIX like systems, try sysconf and sysctl. */
+  int cpus = -1;
+#  if defined(CTL_HW)
+  int mib[2];
+  size_t sz;
+#  endif
+
+#  ifdef _SC_NPROCESSORS_ONLN
+  cpus = sysconf(_SC_NPROCESSORS_ONLN);
+  if (cpus >= 1)
+      return cpus;
+  cpus = -1;
+#  endif
+
+#  if defined(CTL_HW)
+#   ifdef HW_AVAILCPU
+  sz = sizeof(cpus);
+  mib[0] = CTL_HW;
+  mib[1] = HW_AVAILCPU;
+  if (!sysctl(mib, 2, &cpus, &sz, NULL, 0)
+      && cpus >= 1)
+    return cpus;
+  cpus = -1;
+#   endif /* HW_AVAILCPU */
+
+  sz = sizeof(cpus);
+  mib[0] = CTL_HW;
+  mib[1] = HW_NCPU;
+  if (!sysctl(mib, 2, &cpus, &sz, NULL, 0)
+      && cpus >= 1)
+    return cpus;
+  cpus = -1;
+#  endif /* CTL_HW */
+
+  /* no idea / failure, just return 1. */
+  return 1;
+# endif
+}
+#endif /* KMK */
+
+#ifdef __MSDOS__
+static void
+msdos_return_to_initial_directory (void)
+{
+  if (directory_before_chdir)
+    chdir (directory_before_chdir);
+}
+#endif  /* __MSDOS__ */
+
+static void
+reset_jobserver (void)
+{
+  jobserver_clear ();
+  free (jobserver_auth);
+  jobserver_auth = NULL;
+}
+
+#ifdef _AMIGA
+int
+main (int argc, char **argv)
+#else
+int
+main (int argc, char **argv, char **envp)
+#endif
+{
+  static char *stdin_nm = 0;
+#ifdef CONFIG_WITH_MAKE_STATS
+  unsigned long long uStartTick = CURRENT_CLOCK_TICK();
+#endif
+  int makefile_status = MAKE_SUCCESS;
+  struct goaldep *read_files;
+  PATH_VAR (current_directory);
+  unsigned int restarts = 0;
+  unsigned int syncing = 0;
+  int argv_slots;
+#ifdef WINDOWS32
+  const char *unix_path = NULL;
+  const char *windows32_path = NULL;
+
+# ifndef ELECTRIC_HEAP /* Drop this because it prevents JIT debugging. */
+#  ifndef KMK /* Don't want none of this crap. */
+  SetUnhandledExceptionFilter (handle_runtime_exceptions);
+#  endif
+# endif /* !ELECTRIC_HEAP */
+
+# ifdef KMK
+  /* Clear the SEM_NOGPFAULTERRORBOX flag so WER will generate dumps when we run
+     under cygwin.  To void popups, set WER registry value DontShowUI to 1. */
+  if (getenv("KMK_NO_SET_ERROR_MODE") == NULL)
+    SetErrorMode(SetErrorMode(0) & ~SEM_NOGPFAULTERRORBOX);
+# endif
+
+  /* start off assuming we have no shell */
+  unixy_shell = 0;
+  no_default_sh_exe = 1;
+#endif
+#ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+  make_start_ts = nano_timestamp ();
+#endif
+
+  output_init (&make_sync);
+
+  initialize_stopchar_map();
+
+#ifdef SET_STACK_SIZE
+ /* Get rid of any avoidable limit on stack size.  */
+  {
+    struct rlimit rlim;
+
+    /* Set the stack limit huge so that alloca does not fail.  */
+    if (getrlimit (RLIMIT_STACK, &rlim) == 0
+        && rlim.rlim_cur > 0 && rlim.rlim_cur < rlim.rlim_max)
+      {
+        stack_limit = rlim;
+        rlim.rlim_cur = rlim.rlim_max;
+        setrlimit (RLIMIT_STACK, &rlim);
+      }
+    else
+      stack_limit.rlim_cur = 0;
+  }
+#endif
+
+  /* Needed for OS/2 */
+  initialize_main (&argc, &argv);
+
+#ifdef KMK
+  init_kbuild (argc, argv);
+#endif
+
+#ifdef MAKE_MAINTAINER_MODE
+  /* In maintainer mode we always enable verification.  */
+  verify_flag = 1;
+#endif
+
+#if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
+  /* Request the most powerful version of 'system', to
+     make up for the dumb default shell.  */
+  __system_flags = (__system_redirect
+                    | __system_use_shell
+                    | __system_allow_multiple_cmds
+                    | __system_allow_long_cmds
+                    | __system_handle_null_commands
+                    | __system_emulate_chdir);
+
+#endif
+
+  /* Set up gettext/internationalization support.  */
+  setlocale (LC_ALL, "");
+  /* The cast to void shuts up compiler warnings on systems that
+     disable NLS.  */
+#ifdef LOCALEDIR /* bird */
+  (void)bindtextdomain (PACKAGE, LOCALEDIR);
+  (void)textdomain (PACKAGE);
+#endif
+
+#ifdef  POSIX
+  sigemptyset (&fatal_signal_set);
+#define ADD_SIG(sig)    sigaddset (&fatal_signal_set, sig)
+#else
+#ifdef  HAVE_SIGSETMASK
+  fatal_signal_mask = 0;
+#define ADD_SIG(sig)    fatal_signal_mask |= sigmask (sig)
+#else
+#define ADD_SIG(sig)    (void)sig
+#endif
+#endif
+
+#define FATAL_SIG(sig)                                                        \
+  if (bsd_signal (sig, fatal_error_signal) == SIG_IGN)                        \
+    bsd_signal (sig, SIG_IGN);                                                \
+  else                                                                        \
+    ADD_SIG (sig);
+
+#ifdef SIGHUP
+  FATAL_SIG (SIGHUP);
+#endif
+#ifdef SIGQUIT
+  FATAL_SIG (SIGQUIT);
+#endif
+  FATAL_SIG (SIGINT);
+  FATAL_SIG (SIGTERM);
+
+#ifdef __MSDOS__
+  /* Windows 9X delivers FP exceptions in child programs to their
+     parent!  We don't want Make to die when a child divides by zero,
+     so we work around that lossage by catching SIGFPE.  */
+  FATAL_SIG (SIGFPE);
+#endif
+
+#ifdef  SIGDANGER
+  FATAL_SIG (SIGDANGER);
+#endif
+#ifdef SIGXCPU
+  FATAL_SIG (SIGXCPU);
+#endif
+#ifdef SIGXFSZ
+  FATAL_SIG (SIGXFSZ);
+#endif
+
+#ifdef KMK
+  /* Get the incoming umask so we don't have to modify it later to get it. */
+  umask(g_fUMask = umask(0077));
+#endif
+
+#ifdef CONFIG_NEW_WIN32_CTRL_EVENT
+  /* bird: dispatch signals in our own way to try avoid deadlocks. */
+  g_tidMainThread = GetCurrentThreadId ();
+  SetConsoleCtrlHandler (ctrl_event, TRUE);
+#endif /* CONFIG_NEW_WIN32_CTRL_EVENT */
+
+#undef  FATAL_SIG
+
+  /* Do not ignore the child-death signal.  This must be done before
+     any children could possibly be created; otherwise, the wait
+     functions won't work on systems with the SVR4 ECHILD brain
+     damage, if our invoker is ignoring this signal.  */
+
+#ifdef HAVE_WAIT_NOHANG
+# if defined SIGCHLD
+  (void) bsd_signal (SIGCHLD, SIG_DFL);
+# endif
+# if defined SIGCLD && SIGCLD != SIGCHLD
+  (void) bsd_signal (SIGCLD, SIG_DFL);
+# endif
+#endif
+
+  output_init (NULL);
+
+  /* Figure out where this program lives.  */
+
+  if (argv[0] == 0)
+    argv[0] = (char *)"";
+  if (argv[0][0] == '\0')
+#ifdef KMK
+    program = "kmk";
+#else
+    program = "make";
+#endif
+  else
+    {
+      program = strrchr (argv[0], '/');
+#if defined(__MSDOS__) || defined(__EMX__)
+      if (program == 0)
+        program = strrchr (argv[0], '\\');
+      else
+        {
+          /* Some weird environments might pass us argv[0] with
+             both kinds of slashes; we must find the rightmost.  */
+          char *p = strrchr (argv[0], '\\');
+          if (p && p > program)
+            program = p;
+        }
+      if (program == 0 && argv[0][1] == ':')
+        program = argv[0] + 1;
+#endif
+#ifdef WINDOWS32
+      if (program == 0)
+        {
+          /* Extract program from full path */
+          program = strrchr (argv[0], '\\');
+          if (program)
+            {
+              int argv0_len = strlen (program);
+              if (argv0_len > 4 && streq (&program[argv0_len - 4], ".exe"))
+                /* Remove .exe extension */
+                program[argv0_len - 4] = '\0';
+            }
+        }
+#endif
+#ifdef VMS
+      set_program_name (argv[0]);
+      program = program_name;
+      {
+        const char *shell;
+        char pwdbuf[256];
+        char *pwd;
+        shell = getenv ("SHELL");
+        if (shell != NULL)
+          vms_gnv_shell = 1;
+
+        /* Need to know if CRTL set to report UNIX paths.  Use getcwd as
+           it works on all versions of VMS. */
+        pwd = getcwd(pwdbuf, 256);
+        if (pwd[0] == '/')
+          vms_report_unix_paths = 1;
+
+        vms_use_mcr_command = get_vms_env_flag ("GNV$MAKE_USE_MCR", 0);
+
+        vms_always_use_cmd_file = get_vms_env_flag ("GNV$MAKE_USE_CMD_FILE", 0);
+
+        /* Legacy behavior is on VMS is older behavior that needed to be
+           changed to be compatible with standard make behavior.
+           For now only completely disable when running under a Bash shell.
+           TODO: Update VMS built in recipes and macros to not need this
+           behavior, at which time the default may change. */
+        vms_legacy_behavior = get_vms_env_flag ("GNV$MAKE_OLD_VMS",
+                                                !vms_gnv_shell);
+
+        /* VMS was changed to use a comma separator in the past, but that is
+           incompatible with built in functions that expect space separated
+           lists.  Allow this to be selectively turned off. */
+        vms_comma_separator = get_vms_env_flag ("GNV$MAKE_COMMA",
+                                                vms_legacy_behavior);
+
+        /* Some Posix shell syntax options are incompatible with VMS syntax.
+           VMS requires double quotes for strings and escapes quotes
+           differently.  When this option is active, VMS will try
+           to simulate Posix shell simulations instead of using
+           VMS DCL behavior. */
+        vms_unix_simulation = get_vms_env_flag ("GNV$MAKE_SHELL_SIM",
+                                                !vms_legacy_behavior);
+
+      }
+      if (need_vms_symbol () && !vms_use_mcr_command)
+        create_foreign_command (program_name, argv[0]);
+#else
+      if (program == 0)
+        program = argv[0];
+      else
+        ++program;
+#endif
+    }
+
+  /* Set up to access user data (files).  */
+  user_access ();
+
+# ifdef CONFIG_WITH_COMPILER
+  kmk_cc_init ();
+# endif
+#ifdef CONFIG_WITH_ALLOC_CACHES
+  initialize_global_alloc_caches ();
+#endif
+  initialize_global_hash_tables ();
+#ifdef KMK
+  init_kbuild_object ();
+#endif
+
+  /* Figure out where we are.  */
+
+#ifdef WINDOWS32
+  if (getcwd_fs (current_directory, GET_PATH_MAX) == 0)
+#else
+  if (getcwd (current_directory, GET_PATH_MAX) == 0)
+#endif
+    {
+#ifdef  HAVE_GETCWD
+      perror_with_name ("getcwd", "");
+#else
+      OS (error, NILF, "getwd: %s", current_directory);
+#endif
+      current_directory[0] = '\0';
+      directory_before_chdir = 0;
+    }
+  else
+    directory_before_chdir = xstrdup (current_directory);
+
+#ifdef  __MSDOS__
+  /* Make sure we will return to the initial directory, come what may.  */
+  atexit (msdos_return_to_initial_directory);
+#endif
+
+  /* Initialize the special variables.  */
+  define_variable_cname (".VARIABLES", "", o_default, 0)->special = 1;
+  /* define_variable_cname (".TARGETS", "", o_default, 0)->special = 1; */
+  define_variable_cname (".RECIPEPREFIX", "", o_default, 0)->special = 1;
+  define_variable_cname (".SHELLFLAGS", "-c", o_default, 0);
+  define_variable_cname (".LOADED", "", o_default, 0);
+
+  /* Set up .FEATURES
+     Use a separate variable because define_variable_cname() is a macro and
+     some compilers (MSVC) don't like conditionals in macros.  */
+  {
+    const char *features = "target-specific order-only second-expansion"
+                           " else-if shortest-stem undefine oneshell"
+#ifndef NO_ARCHIVES
+                           " archives"
+#endif
+#ifdef MAKE_JOBSERVER
+                           " jobserver"
+#endif
+#ifndef NO_OUTPUT_SYNC
+                           " output-sync"
+#endif
+#ifdef MAKE_SYMLINKS
+                           " check-symlink"
+#endif
+#ifdef HAVE_GUILE
+                           " guile"
+#endif
+#ifdef MAKE_LOAD
+                           " load"
+#endif
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+                           " explicit-multitarget"
+#endif
+#ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
+                           " prepend-assignment"
+#endif
+                           ;
+
+    define_variable_cname (".FEATURES", features, o_default, 0);
+  }
+
+#ifdef KMK
+  /* Initialize the default number of jobs to the cpu/core/smt count. */
+  default_job_slots = arg_job_slots = job_slots = get_online_cpu_count ();
+#endif /* KMK */
+
+  /* Configure GNU Guile support */
+  guile_gmake_setup (NILF);
+
+  /* Read in variables from the environment.  It is important that this be
+     done before $(MAKE) is figured out so its definitions will not be
+     from the environment.  */
+
+#ifndef _AMIGA
+  {
+    unsigned int i;
+
+    for (i = 0; envp[i] != 0; ++i)
+      {
+        struct variable *v;
+        const char *ep = envp[i];
+        /* By default, export all variables culled from the environment.  */
+        enum variable_export export = v_export;
+        unsigned int len;
+
+        while (! STOP_SET (*ep, MAP_EQUALS))
+          ++ep;
+
+        /* If there's no equals sign it's a malformed environment.  Ignore.  */
+        if (*ep == '\0')
+          continue;
+
+#ifdef WINDOWS32
+        if (!unix_path && strneq (envp[i], "PATH=", 5))
+          unix_path = ep+1;
+        else if (!strnicmp (envp[i], "Path=", 5))
+          {
+            if (!windows32_path)
+              windows32_path = ep+1;
+            /* PATH gets defined after the loop exits.  */
+            continue;
+          }
+#endif
+
+        /* Length of the variable name, and skip the '='.  */
+        len = ep++ - envp[i];
+
+        /* If this is MAKE_RESTARTS, check to see if the "already printed
+           the enter statement" flag is set.  */
+        if (len == 13 && strneq (envp[i], "MAKE_RESTARTS", 13))
+          {
+            if (*ep == '-')
+              {
+                OUTPUT_TRACED ();
+                ++ep;
+              }
+            restarts = (unsigned int) atoi (ep);
+            export = v_noexport;
+          }
+
+        v = define_variable (envp[i], len, ep, o_env, 1);
+
+        /* POSIX says the value of SHELL set in the makefile won't change the
+           value of SHELL given to subprocesses.  */
+        if (streq (v->name, "SHELL"))
+          {
+#ifndef __MSDOS__
+            export = v_noexport;
+#endif
+#ifndef CONFIG_WITH_STRCACHE2
+            shell_var.name = xstrdup ("SHELL");
+#else
+            shell_var.name = v->name;
+#endif
+            shell_var.length = 5;
+#ifndef CONFIG_WITH_VALUE_LENGTH
+            shell_var.value = xstrdup (ep);
+#else
+            shell_var.value = xstrndup (v->value, v->value_length);
+            shell_var.value_length = v->value_length;
+#endif
+          }
+
+        v->export = export;
+      }
+  }
+#ifdef WINDOWS32
+    /* If we didn't find a correctly spelled PATH we define PATH as
+     * either the first misspelled value or an empty string
+     */
+    if (!unix_path)
+      define_variable_cname ("PATH", windows32_path ? windows32_path : "",
+                             o_env, 1)->export = v_export;
+#endif
+#else /* For Amiga, read the ENV: device, ignoring all dirs */
+    {
+        BPTR env, file, old;
+        char buffer[1024];
+        int len;
+        __aligned struct FileInfoBlock fib;
+
+        env = Lock ("ENV:", ACCESS_READ);
+        if (env)
+          {
+            old = CurrentDir (DupLock (env));
+            Examine (env, &fib);
+
+            while (ExNext (env, &fib))
+              {
+                if (fib.fib_DirEntryType < 0) /* File */
+                  {
+                    /* Define an empty variable. It will be filled in
+                       variable_lookup(). Makes startup quite a bit faster. */
+                    define_variable (fib.fib_FileName,
+                                     strlen (fib.fib_FileName),
+                                     "", o_env, 1)->export = v_export;
+                  }
+              }
+            UnLock (env);
+            UnLock (CurrentDir (old));
+          }
+    }
+#endif
+
+  /* Decode the switches.  */
+  decode_env_switches (STRING_SIZE_TUPLE ("GNUMAKEFLAGS"));
+
+  /* Clear GNUMAKEFLAGS to avoid duplication.  */
+  define_variable_cname ("GNUMAKEFLAGS", "", o_env, 0);
+
+#ifdef KMK
+  decode_env_switches (STRING_SIZE_TUPLE ("KMK_FLAGS"));
+#else /* !KMK */
+  decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
+
+#if 0
+  /* People write things like:
+        MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
+     and we set the -p, -i and -e switches.  Doesn't seem quite right.  */
+  decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
+#endif
+#endif /* !KMK */
+
+  /* In output sync mode we need to sync any output generated by reading the
+     makefiles, such as in $(info ...) or stderr from $(shell ...) etc.  */
+
+  syncing = make_sync.syncout = (output_sync == OUTPUT_SYNC_LINE
+                                 || output_sync == OUTPUT_SYNC_TARGET);
+  OUTPUT_SET (&make_sync);
+
+  /* Remember the job slots set through the environment vs. command line.  */
+  {
+    int env_slots = arg_job_slots;
+    arg_job_slots = INVALID_JOB_SLOTS;
+
+    decode_switches (argc, (const char **)argv, 0);
+    argv_slots = arg_job_slots;
+
+    if (arg_job_slots == INVALID_JOB_SLOTS)
+      arg_job_slots = env_slots;
+  }
+
+  /* Set a variable specifying whether stdout/stdin is hooked to a TTY.  */
+#ifdef HAVE_ISATTY
+  if (isatty (fileno (stdout)))
+    if (! lookup_variable (STRING_SIZE_TUPLE ("MAKE_TERMOUT")))
+      {
+        const char *tty = TTYNAME (fileno (stdout));
+        define_variable_cname ("MAKE_TERMOUT", tty ? tty : DEFAULT_TTYNAME,
+                               o_default, 0)->export = v_export;
+      }
+  if (isatty (fileno (stderr)))
+    if (! lookup_variable (STRING_SIZE_TUPLE ("MAKE_TERMERR")))
+      {
+        const char *tty = TTYNAME (fileno (stderr));
+        define_variable_cname ("MAKE_TERMERR", tty ? tty : DEFAULT_TTYNAME,
+                               o_default, 0)->export = v_export;
+      }
+#endif
+
+  /* Reset in case the switches changed our minds.  */
+  syncing = (output_sync == OUTPUT_SYNC_LINE
+             || output_sync == OUTPUT_SYNC_TARGET);
+
+#ifdef KMK
+  set_make_priority_and_affinity ();
+#endif
+
+  if (make_sync.syncout && ! syncing)
+    output_close (&make_sync);
+
+  make_sync.syncout = syncing;
+  OUTPUT_SET (&make_sync);
+
+  /* Figure out the level of recursion.  */
+  {
+    struct variable *v = lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME));
+    if (v && v->value[0] != '\0' && v->value[0] != '-')
+      makelevel = (unsigned int) atoi (v->value);
+    else
+      makelevel = 0;
+  }
+
+#ifdef WINDOWS32
+  if (suspend_flag)
+    {
+      fprintf (stderr, "%s (pid = %ld)\n", argv[0], GetCurrentProcessId ());
+      fprintf (stderr, _("%s is suspending for 30 seconds..."), argv[0]);
+      Sleep (30 * 1000);
+      fprintf (stderr, _("done sleep(30). Continuing.\n"));
+    }
+#endif
+
+  /* Set always_make_flag if -B was given and we've not restarted already.  */
+  always_make_flag = always_make_set && (restarts == 0);
+
+  /* Print version information, and exit.  */
+  if (print_version_flag)
+    {
+      print_version ();
+      die (MAKE_SUCCESS);
+    }
+
+  if (ISDB (DB_BASIC))
+    print_version ();
+
+#ifndef VMS
+  /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
+     (If it is a relative pathname with a slash, prepend our directory name
+     so the result will run the same program regardless of the current dir.
+     If it is a name with no slash, we can only hope that PATH did not
+     find it in the current directory.)  */
+#ifdef WINDOWS32
+  /*
+   * Convert from backslashes to forward slashes for
+   * programs like sh which don't like them. Shouldn't
+   * matter if the path is one way or the other for
+   * CreateProcess().
+   */
+  if (strpbrk (argv[0], "/:\\") || strstr (argv[0], "..")
+      || strneq (argv[0], "//", 2))
+# if 1  /* bird */
+    {
+      PATH_VAR (tmp_path_buf);
+      argv[0] = xstrdup (unix_slashes_resolved (argv[0], tmp_path_buf,
+                                                GET_PATH_MAX));
+    }
+# else  /* bird */
+      //argv[0] = xstrdup (w32ify (argv[0], 1));
+# endif /* bird */
+#else /* WINDOWS32 */
+#if defined (__MSDOS__) || defined (__EMX__)
+  if (strchr (argv[0], '\\'))
+    {
+      char *p;
+
+      argv[0] = xstrdup (argv[0]);
+      for (p = argv[0]; *p; p++)
+        if (*p == '\\')
+          *p = '/';
+    }
+  /* If argv[0] is not in absolute form, prepend the current
+     directory.  This can happen when Make is invoked by another DJGPP
+     program that uses a non-absolute name.  */
+  if (current_directory[0] != '\0'
+      && argv[0] != 0
+      && (argv[0][0] != '/' && (argv[0][0] == '\0' || argv[0][1] != ':'))
+# ifdef __EMX__
+      /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
+      && (strchr (argv[0], '/') != 0 || strchr (argv[0], '\\') != 0)
+# endif
+      )
+    argv[0] = xstrdup (concat (3, current_directory, "/", argv[0]));
+#else  /* !__MSDOS__ */
+  if (current_directory[0] != '\0'
+      && argv[0] != 0 && argv[0][0] != '/' && strchr (argv[0], '/') != 0
+#ifdef HAVE_DOS_PATHS
+      && (argv[0][0] != '\\' && (!argv[0][0] || argv[0][1] != ':'))
+      && strchr (argv[0], '\\') != 0
+#endif
+      )
+    argv[0] = xstrdup (concat (3, current_directory, "/", argv[0]));
+#endif /* !__MSDOS__ */
+#endif /* WINDOWS32 */
+#endif
+
+  /* We may move, but until we do, here we are.  */
+  starting_directory = current_directory;
+
+  /* Set up the job_slots value and the jobserver.  This can't be usefully set
+     in the makefile, and we want to verify the authorization is valid before
+     make has a chance to start using it for something else.  */
+
+  if (jobserver_auth)
+    {
+      if (argv_slots == INVALID_JOB_SLOTS)
+        {
+          if (jobserver_parse_auth (jobserver_auth))
+            {
+              /* Success!  Use the jobserver.  */
+              job_slots = 0;
+              goto job_setup_complete;
+            }
+
+          O (error, NILF, _("warning: jobserver unavailable: using -j1.  Add '+' to parent make rule."));
+          arg_job_slots = 1;
+        }
+
+      /* The user provided a -j setting on the command line: use it.  */
+      else if (!restarts)
+        /* If restarts is >0 we already printed this message.  */
+        O (error, NILF,
+           _("warning: -jN forced in submake: disabling jobserver mode."));
+
+      /* We failed to use our parent's jobserver.  */
+      reset_jobserver ();
+      job_slots = (unsigned int)arg_job_slots;
+    }
+  else if (arg_job_slots == INVALID_JOB_SLOTS)
+#ifdef KMK
+    job_slots = default_job_slots; /* The default is set to CPU count early in main. */
+#else
+    /* The default is one job at a time.  */
+    job_slots = 1;
+#endif
+  else
+    /* Use whatever was provided.  */
+    job_slots = (unsigned int)arg_job_slots;
+
+ job_setup_complete:
+
+#if defined (WINDOWS32) && defined(CONFIG_NEW_WIN_CHILDREN)
+  /* Initialize the windows child management. */
+  MkWinChildInit(job_slots);
+#endif
+
+  /* The extra indirection through $(MAKE_COMMAND) is done
+     for hysterical raisins.  */
+
+#ifdef VMS
+  if (vms_use_mcr_command)
+    define_variable_cname ("MAKE_COMMAND", vms_command (argv[0]), o_default, 0);
+  else
+    define_variable_cname ("MAKE_COMMAND", program, o_default, 0);
+#else
+  define_variable_cname ("MAKE_COMMAND", argv[0], o_default, 0);
+#endif
+  define_variable_cname ("MAKE", "$(MAKE_COMMAND)", o_default, 1);
+#ifdef KMK
+  (void) define_variable ("KMK", 3, argv[0], o_default, 1);
+#endif
+
+  if (command_variables != 0)
+    {
+      struct command_variable *cv;
+      struct variable *v;
+      unsigned int len = 0;
+      char *value, *p;
+
+      /* Figure out how much space will be taken up by the command-line
+         variable definitions.  */
+      for (cv = command_variables; cv != 0; cv = cv->next)
+        {
+          v = cv->variable;
+          len += 2 * strlen (v->name);
+          if (! v->recursive)
+            ++len;
+          ++len;
+          len += 2 * strlen (v->value);
+          ++len;
+        }
+
+      /* Now allocate a buffer big enough and fill it.  */
+      p = value = alloca (len);
+      for (cv = command_variables; cv != 0; cv = cv->next)
+        {
+          v = cv->variable;
+          p = quote_for_env (p, v->name);
+          if (! v->recursive)
+            *p++ = ':';
+          *p++ = '=';
+          p = quote_for_env (p, v->value);
+          *p++ = ' ';
+        }
+      p[-1] = '\0';             /* Kill the final space and terminate.  */
+
+      /* Define an unchangeable variable with a name that no POSIX.2
+         makefile could validly use for its own variable.  */
+      define_variable_cname ("-*-command-variables-*-", value, o_automatic, 0);
+
+      /* Define the variable; this will not override any user definition.
+         Normally a reference to this variable is written into the value of
+         MAKEFLAGS, allowing the user to override this value to affect the
+         exported value of MAKEFLAGS.  In POSIX-pedantic mode, we cannot
+         allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
+         a reference to this hidden variable is written instead. */
+#ifdef KMK
+      define_variable_cname ("KMK_OVERRIDES", "${-*-command-variables-*-}",
+                             o_env, 1);
+#else
+      define_variable_cname ("MAKEOVERRIDES", "${-*-command-variables-*-}",
+                             o_env, 1);
+#endif
+#ifdef VMS
+      vms_export_dcl_symbol ("MAKEOVERRIDES", "${-*-command-variables-*-}");
+#endif
+    }
+
+  /* If there were -C flags, move ourselves about.  */
+  if (directories != 0)
+    {
+      unsigned int i;
+      for (i = 0; directories->list[i] != 0; ++i)
+        {
+          const char *dir = directories->list[i];
+#ifdef WINDOWS32
+          /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
+             But allow -C/ just in case someone wants that.  */
+          {
+            char *p = (char *)dir + strlen (dir) - 1;
+            while (p > dir && (p[0] == '/' || p[0] == '\\'))
+              --p;
+            p[1] = '\0';
+          }
+#endif
+          if (chdir (dir) < 0)
+            pfatal_with_name (dir);
+        }
+    }
+
+#ifdef KMK
+  /* Check for [Mm]akefile.kup and change directory when found.
+     Makefile.kmk overrides Makefile.kup but not plain Makefile.
+     If no -C arguments were given, fake one to indicate chdir. */
+  if (makefiles == 0)
+    {
+      struct stat st;
+      if ((   (   stat ("Makefile.kup", &st) == 0
+               && S_ISREG (st.st_mode) )
+           || (   stat ("makefile.kup", &st) == 0
+               && S_ISREG (st.st_mode) ) )
+       && stat ("Makefile.kmk", &st) < 0
+       && stat ("makefile.kmk", &st) < 0)
+        {
+          static char fake_path[3*16 + 32] = "..";
+          char *cur = &fake_path[2];
+          int   up_levels = 1;
+          while (up_levels < 16)
+            {
+              /* File with higher precedence.s */
+              strcpy (cur, "/Makefile.kmk");
+              if (stat (fake_path, &st) == 0)
+                break;
+              strcpy (cur, "/makefile.kmk");
+              if (stat (fake_path, &st) == 0)
+                break;
+
+              /* the .kup files */
+              strcpy (cur, "/Makefile.kup");
+              if (   stat (fake_path, &st) != 0
+                  || !S_ISREG (st.st_mode))
+                {
+                  strcpy (cur, "/makefile.kup");
+                  if (   stat (fake_path, &st) != 0
+                      || !S_ISREG (st.st_mode))
+                    break;
+                }
+
+              /* ok */
+              strcpy (cur, "/..");
+              cur += 3;
+              up_levels++;
+            }
+
+          if (up_levels >= 16)
+            O (fatal, NILF, _("Makefile.kup recursion is too deep."));
+
+          /* attempt to change to the directory. */
+          *cur = '\0';
+          if (chdir (fake_path) < 0)
+            pfatal_with_name (fake_path);
+
+          /* add the string to the directories. */
+          if (!directories)
+            {
+              directories = xmalloc (sizeof(*directories));
+              directories->list = xmalloc (5 * sizeof (char *));
+              directories->max = 5;
+              directories->idx = 0;
+            }
+          else if (directories->idx == directories->max - 1)
+            {
+              directories->max += 5;
+              directories->list = xrealloc ((void *)directories->list,
+                                   directories->max * sizeof (char *));
+            }
+          directories->list[directories->idx++] = fake_path;
+        }
+    }
+#endif /* KMK */
+
+#ifdef WINDOWS32
+  /*
+   * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
+   * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
+   *
+   * The functions in dir.c can incorrectly cache information for "."
+   * before we have changed directory and this can cause file
+   * lookups to fail because the current directory (.) was pointing
+   * at the wrong place when it was first evaluated.
+   */
+#ifdef KMK /* this is really a candidate for all platforms... */
+  {
+    extern const char *default_shell;
+    const char *bin = get_kbuild_bin_path();
+    char *newshell;
+    size_t len = strlen (bin);
+    default_shell = newshell = xmalloc (len + sizeof("/kmk_ash.exe"));
+    memcpy (newshell, bin, len);
+    strcpy (newshell + len, "/kmk_ash.exe");
+    no_default_sh_exe = 0;
+    batch_mode_shell = 1;
+    unixy_shell = 1;
+  }
+#else /* !KMK */
+   no_default_sh_exe = !find_and_set_default_shell (NULL);
+#endif /* !KMK */
+#endif /* WINDOWS32 */
+
+  /* Except under -s, always do -w in sub-makes and under -C.  */
+  if (!silent_flag && (directories != 0 || makelevel > 0))
+    print_directory_flag = 1;
+
+  /* Let the user disable that with --no-print-directory.  */
+  if (inhibit_print_directory_flag)
+    print_directory_flag = 0;
+
+  /* If -R was given, set -r too (doesn't make sense otherwise!)  */
+  if (no_builtin_variables_flag)
+    no_builtin_rules_flag = 1;
+
+  /* Construct the list of include directories to search.  */
+
+  construct_include_path (include_directories == 0
+                          ? 0 : include_directories->list);
+
+  /* If we chdir'ed, figure out where we are now.  */
+  if (directories)
+    {
+#ifdef WINDOWS32
+      if (getcwd_fs (current_directory, GET_PATH_MAX) == 0)
+#else
+      if (getcwd (current_directory, GET_PATH_MAX) == 0)
+#endif
+        {
+#ifdef  HAVE_GETCWD
+          perror_with_name ("getcwd", "");
+#else
+          OS (error, NILF, "getwd: %s", current_directory);
+#endif
+          starting_directory = 0;
+        }
+      else
+        starting_directory = current_directory;
+    }
+
+  define_variable_cname ("CURDIR", current_directory, o_file, 0);
+
+  /* Read any stdin makefiles into temporary files.  */
+
+  if (makefiles != 0)
+    {
+      unsigned int i;
+      for (i = 0; i < makefiles->idx; ++i)
+        if (makefiles->list[i][0] == '-' && makefiles->list[i][1] == '\0')
+          {
+            /* This makefile is standard input.  Since we may re-exec
+               and thus re-read the makefiles, we read standard input
+               into a temporary file and read from that.  */
+            FILE *outfile;
+            char *template;
+            const char *tmpdir;
+
+            if (stdin_nm)
+              O (fatal, NILF,
+                 _("Makefile from standard input specified twice."));
+
+#ifdef VMS
+# define DEFAULT_TMPDIR     "/sys$scratch/"
+#else
+# ifdef P_tmpdir
+#  define DEFAULT_TMPDIR    P_tmpdir
+# else
+#  define DEFAULT_TMPDIR    "/tmp"
+# endif
+#endif
+#define DEFAULT_TMPFILE     "GmXXXXXX"
+
+            if (((tmpdir = getenv ("TMPDIR")) == NULL || *tmpdir == '\0')
+#if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
+                /* These are also used commonly on these platforms.  */
+                && ((tmpdir = getenv ("TEMP")) == NULL || *tmpdir == '\0')
+                && ((tmpdir = getenv ("TMP")) == NULL || *tmpdir == '\0')
+#endif
+               )
+              tmpdir = DEFAULT_TMPDIR;
+
+            template = alloca (strlen (tmpdir) + CSTRLEN (DEFAULT_TMPFILE) + 2);
+            strcpy (template, tmpdir);
+
+#ifdef HAVE_DOS_PATHS
+            if (strchr ("/\\", template[strlen (template) - 1]) == NULL)
+              strcat (template, "/");
+#else
+# ifndef VMS
+            if (template[strlen (template) - 1] != '/')
+              strcat (template, "/");
+# endif /* !VMS */
+#endif /* !HAVE_DOS_PATHS */
+
+            strcat (template, DEFAULT_TMPFILE);
+            outfile = output_tmpfile (&stdin_nm, template);
+            if (outfile == 0)
+              pfatal_with_name (_("fopen (temporary file)"));
+            while (!feof (stdin) && ! ferror (stdin))
+              {
+                char buf[2048];
+                unsigned int n = fread (buf, 1, sizeof (buf), stdin);
+                if (n > 0 && fwrite (buf, 1, n, outfile) != n)
+                  pfatal_with_name (_("fwrite (temporary file)"));
+              }
+            fclose (outfile);
+
+            /* Replace the name that read_all_makefiles will
+               see with the name of the temporary file.  */
+            makefiles->list[i] = strcache_add (stdin_nm);
+
+            /* Make sure the temporary file will not be remade.  */
+            {
+              struct file *f = enter_file (strcache_add (stdin_nm));
+              f->updated = 1;
+              f->update_status = us_success;
+              f->command_state = cs_finished;
+              /* Can't be intermediate, or it'll be removed too early for
+                 make re-exec.  */
+              f->intermediate = 0;
+              f->dontcare = 0;
+            }
+          }
+    }
+
+#if !defined(__EMX__) || defined(__KLIBC__) /* Don't use a SIGCHLD handler for good old EMX (bird) */
+#if !defined(HAVE_WAIT_NOHANG) || defined(MAKE_JOBSERVER)
+  /* Set up to handle children dying.  This must be done before
+     reading in the makefiles so that 'shell' function calls will work.
+
+     If we don't have a hanging wait we have to fall back to old, broken
+     functionality here and rely on the signal handler and counting
+     children.
+
+     If we're using the jobs pipe we need a signal handler so that SIGCHLD is
+     not ignored; we need it to interrupt the read(2) of the jobserver pipe if
+     we're waiting for a token.
+
+     If none of these are true, we don't need a signal handler at all.  */
+  {
+# if defined SIGCHLD
+    bsd_signal (SIGCHLD, child_handler);
+# endif
+# if defined SIGCLD && SIGCLD != SIGCHLD
+    bsd_signal (SIGCLD, child_handler);
+# endif
+  }
+
+#ifdef HAVE_PSELECT
+  /* If we have pselect() then we need to block SIGCHLD so it's deferred.  */
+  {
+    sigset_t block;
+    sigemptyset (&block);
+    sigaddset (&block, SIGCHLD);
+    if (sigprocmask (SIG_SETMASK, &block, NULL) < 0)
+      pfatal_with_name ("sigprocmask(SIG_SETMASK, SIGCHLD)");
+  }
+#endif
+
+#endif
+#endif
+
+  /* Let the user send us SIGUSR1 to toggle the -d flag during the run.  */
+#ifdef SIGUSR1
+  bsd_signal (SIGUSR1, debug_signal_handler);
+#endif
+
+  /* Define the initial list of suffixes for old-style rules.  */
+  set_default_suffixes ();
+
+  /* Define the file rules for the built-in suffix rules.  These will later
+     be converted into pattern rules.  We used to do this in
+     install_default_implicit_rules, but since that happens after reading
+     makefiles, it results in the built-in pattern rules taking precedence
+     over makefile-specified suffix rules, which is wrong.  */
+  install_default_suffix_rules ();
+
+  /* Define some internal and special variables.  */
+  define_automatic_variables ();
+
+  /* Set up the MAKEFLAGS and MFLAGS variables for makefiles to see.
+     Initialize it to be exported but allow the makefile to reset it.  */
+  define_makeflags (0, 0)->export = v_export;
+
+  /* Define the default variables.  */
+  define_default_variables ();
+
+  default_file = enter_file (strcache_add (".DEFAULT"));
+
+  default_goal_var = define_variable_cname (".DEFAULT_GOAL", "", o_file, 0);
+
+  /* Evaluate all strings provided with --eval.
+     Also set up the $(-*-eval-flags-*-) variable.  */
+
+  if (eval_strings)
+    {
+      char *p, *value;
+      unsigned int i;
+      unsigned int len = (CSTRLEN ("--eval=") + 1) * eval_strings->idx;
+
+      for (i = 0; i < eval_strings->idx; ++i)
+        {
+#ifndef CONFIG_WITH_VALUE_LENGTH
+          p = xstrdup (eval_strings->list[i]);
+          len += 2 * strlen (p);
+          eval_buffer (p, NULL);
+#else
+          unsigned int sub_len = strlen(eval_strings->list[i]);
+          p = xstrndup (eval_strings->list[i], sub_len);
+          len += 2 * sub_len;
+          eval_buffer (p, NULL, p + sub_len);
+#endif
+          free (p);
+        }
+
+      p = value = alloca (len);
+      for (i = 0; i < eval_strings->idx; ++i)
+        {
+          strcpy (p, "--eval=");
+          p += CSTRLEN ("--eval=");
+          p = quote_for_env (p, eval_strings->list[i]);
+          *(p++) = ' ';
+        }
+      p[-1] = '\0';
+
+      define_variable_cname ("-*-eval-flags-*-", value, o_automatic, 0);
+    }
+
+  /* Read all the makefiles.  */
+
+  read_files = read_all_makefiles (makefiles == 0 ? 0 : makefiles->list);
+
+#ifdef WINDOWS32
+  /* look one last time after reading all Makefiles */
+  if (no_default_sh_exe)
+    no_default_sh_exe = !find_and_set_default_shell (NULL);
+#endif /* WINDOWS32 */
+
+#if defined (__MSDOS__) || defined (__EMX__) || defined (VMS)
+  /* We need to know what kind of shell we will be using.  */
+  {
+    extern int _is_unixy_shell (const char *_path);
+    struct variable *shv = lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
+    extern int unixy_shell;
+    extern const char *default_shell;
+
+    if (shv && *shv->value)
+      {
+        char *shell_path = recursively_expand (shv);
+
+        if (shell_path && _is_unixy_shell (shell_path))
+          unixy_shell = 1;
+        else
+          unixy_shell = 0;
+        if (shell_path)
+          default_shell = shell_path;
+      }
+  }
+#endif /* __MSDOS__ || __EMX__ */
+
+  {
+    int old_builtin_rules_flag = no_builtin_rules_flag;
+    int old_builtin_variables_flag = no_builtin_variables_flag;
+
+    /* Decode switches again, for variables set by the makefile.  */
+    decode_env_switches (STRING_SIZE_TUPLE ("GNUMAKEFLAGS"));
+
+    /* Clear GNUMAKEFLAGS to avoid duplication.  */
+    define_variable_cname ("GNUMAKEFLAGS", "", o_override, 0);
+
+#ifdef KMK
+    decode_env_switches (STRING_SIZE_TUPLE ("KMK_FLAGS"));
+#else /* !KMK */
+    decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
+#if 0
+    decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
+#endif
+#endif /* !KMK */
+
+    /* Reset in case the switches changed our mind.  */
+    syncing = (output_sync == OUTPUT_SYNC_LINE
+               || output_sync == OUTPUT_SYNC_TARGET);
+
+    if (make_sync.syncout && ! syncing)
+      output_close (&make_sync);
+
+    make_sync.syncout = syncing;
+    OUTPUT_SET (&make_sync);
+
+    /* If we've disabled builtin rules, get rid of them.  */
+    if (no_builtin_rules_flag && ! old_builtin_rules_flag)
+      {
+        if (suffix_file->builtin)
+          {
+            free_dep_chain (suffix_file->deps);
+            suffix_file->deps = 0;
+          }
+        define_variable_cname ("SUFFIXES", "", o_default, 0);
+      }
+
+    /* If we've disabled builtin variables, get rid of them.  */
+    if (no_builtin_variables_flag && ! old_builtin_variables_flag)
+      undefine_default_variables ();
+  }
+
+#if defined (__MSDOS__) || defined (__EMX__) || defined (VMS)
+  if (arg_job_slots != 1
+# ifdef __EMX__
+      && _osmode != OS2_MODE /* turn off -j if we are in DOS mode */
+# endif
+      )
+    {
+      O (error, NILF,
+         _("Parallel jobs (-j) are not supported on this platform."));
+      O (error, NILF, _("Resetting to single job (-j1) mode."));
+      arg_job_slots = job_slots = 1;
+    }
+#endif
+
+  /* If we have >1 slot at this point, then we're a top-level make.
+     Set up the jobserver.
+
+     Every make assumes that it always has one job it can run.  For the
+     submakes it's the token they were given by their parent.  For the top
+     make, we just subtract one from the number the user wants.  */
+
+  if (job_slots > 1 && jobserver_setup (job_slots - 1))
+    {
+      /* Fill in the jobserver_auth for our children.  */
+      jobserver_auth = jobserver_get_auth ();
+
+      if (jobserver_auth)
+        {
+          /* We're using the jobserver so set job_slots to 0.  */
+          master_job_slots = job_slots;
+          job_slots = 0;
+        }
+    }
+
+  /* If we're not using parallel jobs, then we don't need output sync.
+     This is so people can enable output sync in GNUMAKEFLAGS or similar, but
+     not have it take effect unless parallel builds are enabled.  */
+  if (syncing && job_slots == 1)
+    {
+      OUTPUT_UNSET ();
+      output_close (&make_sync);
+      syncing = 0;
+      output_sync = OUTPUT_SYNC_NONE;
+    }
+
+#ifndef MAKE_SYMLINKS
+  if (check_symlink_flag)
+    {
+      O (error, NILF, _("Symbolic links not supported: disabling -L."));
+      check_symlink_flag = 0;
+    }
+#endif
+
+  /* Set up MAKEFLAGS and MFLAGS again, so they will be right.  */
+
+  define_makeflags (1, 0);
+
+  /* Make each 'struct goaldep' point at the 'struct file' for the file
+     depended on.  Also do magic for special targets.  */
+
+  snap_deps ();
+
+  /* Convert old-style suffix rules to pattern rules.  It is important to
+     do this before installing the built-in pattern rules below, so that
+     makefile-specified suffix rules take precedence over built-in pattern
+     rules.  */
+
+  convert_to_pattern ();
+
+  /* Install the default implicit pattern rules.
+     This used to be done before reading the makefiles.
+     But in that case, built-in pattern rules were in the chain
+     before user-defined ones, so they matched first.  */
+
+  install_default_implicit_rules ();
+
+  /* Compute implicit rule limits.  */
+
+  count_implicit_rule_limits ();
+
+  /* Construct the listings of directories in VPATH lists.  */
+
+  build_vpath_lists ();
+
+  /* Mark files given with -o flags as very old and as having been updated
+     already, and files given with -W flags as brand new (time-stamp as far
+     as possible into the future).  If restarts is set we'll do -W later.  */
+
+  if (old_files != 0)
+    {
+      const char **p;
+      for (p = old_files->list; *p != 0; ++p)
+        {
+          struct file *f = enter_file (*p);
+          f->last_mtime = f->mtime_before_update = OLD_MTIME;
+          f->updated = 1;
+          f->update_status = us_success;
+          f->command_state = cs_finished;
+        }
+    }
+
+  if (!restarts && new_files != 0)
+    {
+      const char **p;
+      for (p = new_files->list; *p != 0; ++p)
+        {
+          struct file *f = enter_file (*p);
+          f->last_mtime = f->mtime_before_update = NEW_MTIME;
+        }
+    }
+
+  /* Initialize the remote job module.  */
+  remote_setup ();
+
+  /* Dump any output we've collected.  */
+
+  OUTPUT_UNSET ();
+  output_close (&make_sync);
+
+  if (read_files != 0)
+    {
+      /* Update any makefiles if necessary.  */
+
+      FILE_TIMESTAMP *makefile_mtimes = 0;
+      unsigned int mm_idx = 0;
+      char **aargv = NULL;
+      const char **nargv;
+      int nargc;
+      enum update_status status;
+
+      DB (DB_BASIC, (_("Updating makefiles....\n")));
+
+      /* Remove any makefiles we don't want to try to update.
+         Also record the current modtimes so we can compare them later.  */
+      {
+        register struct goaldep *d, *last;
+        last = 0;
+        d = read_files;
+        while (d != 0)
+          {
+            struct file *f = d->file;
+            if (f->double_colon)
+              for (f = f->double_colon; f != NULL; f = f->prev)
+                {
+                  if (f->deps == 0 && f->cmds != 0)
+                    {
+                      /* This makefile is a :: target with commands, but
+                         no dependencies.  So, it will always be remade.
+                         This might well cause an infinite loop, so don't
+                         try to remake it.  (This will only happen if
+                         your makefiles are written exceptionally
+                         stupidly; but if you work for Athena, that's how
+                         you write your makefiles.)  */
+
+                      DB (DB_VERBOSE,
+                          (_("Makefile '%s' might loop; not remaking it.\n"),
+                           f->name));
+
+                      if (last == 0)
+                        read_files = d->next;
+                      else
+                        last->next = d->next;
+
+                      /* Free the storage.  */
+                      free_goaldep (d);
+
+                      d = last == 0 ? read_files : last->next;
+
+                      break;
+                    }
+                }
+
+            if (f == NULL || !f->double_colon)
+              {
+                makefile_mtimes = xrealloc (makefile_mtimes,
+                                            (mm_idx+1)
+                                            * sizeof (FILE_TIMESTAMP));
+                makefile_mtimes[mm_idx++] = file_mtime_no_search (d->file);
+                last = d;
+                d = d->next;
+              }
+          }
+      }
+
+      /* Set up 'MAKEFLAGS' specially while remaking makefiles.  */
+      define_makeflags (1, 1);
+
+      {
+        int orig_db_level = db_level;
+
+        if (! ISDB (DB_MAKEFILES))
+          db_level = DB_NONE;
+
+        rebuilding_makefiles = 1;
+        status = update_goal_chain (read_files);
+        rebuilding_makefiles = 0;
+
+        db_level = orig_db_level;
+      }
+
+      switch (status)
+        {
+        case us_question:
+          /* The only way this can happen is if the user specified -q and asked
+             for one of the makefiles to be remade as a target on the command
+             line.  Since we're not actually updating anything with -q we can
+             treat this as "did nothing".  */
+
+        case us_none:
+          /* Did nothing.  */
+          break;
+
+        case us_failed:
+          /* Failed to update.  Figure out if we care.  */
+          {
+            /* Nonzero if any makefile was successfully remade.  */
+            int any_remade = 0;
+            /* Nonzero if any makefile we care about failed
+               in updating or could not be found at all.  */
+            int any_failed = 0;
+            unsigned int i;
+            struct goaldep *d;
+
+            for (i = 0, d = read_files; d != 0; ++i, d = d->next)
+              {
+                if (d->file->updated)
+                  {
+                    /* This makefile was updated.  */
+                    if (d->file->update_status == us_success)
+                      {
+                        /* It was successfully updated.  */
+                        any_remade |= (file_mtime_no_search (d->file)
+                                       != makefile_mtimes[i]);
+                      }
+                    else if (! (d->flags & RM_DONTCARE))
+                      {
+                        FILE_TIMESTAMP mtime;
+                        /* The update failed and this makefile was not
+                           from the MAKEFILES variable, so we care.  */
+                        OS (error, NILF, _("Failed to remake makefile '%s'."),
+                            d->file->name);
+                        mtime = file_mtime_no_search (d->file);
+                        any_remade |= (mtime != NONEXISTENT_MTIME
+                                       && mtime != makefile_mtimes[i]);
+                        makefile_status = MAKE_FAILURE;
+                      }
+                  }
+                else
+                  /* This makefile was not found at all.  */
+                  if (! (d->flags & RM_DONTCARE))
+                    {
+                      const char *dnm = dep_name (d);
+                      size_t l = strlen (dnm);
+
+                      /* This is a makefile we care about.  See how much.  */
+                      if (d->flags & RM_INCLUDED)
+                        /* An included makefile.  We don't need to die, but we
+                           do want to complain.  */
+                        error (NILF, l,
+                               _("Included makefile '%s' was not found."), dnm);
+                      else
+                        {
+                          /* A normal makefile.  We must die later.  */
+                          error (NILF, l,
+                                 _("Makefile '%s' was not found"), dnm);
+                          any_failed = 1;
+                        }
+                    }
+              }
+            /* Reset this to empty so we get the right error message below.  */
+            read_files = 0;
+
+            if (any_remade)
+              goto re_exec;
+            if (any_failed)
+              die (MAKE_FAILURE);
+            break;
+          }
+
+        case us_success:
+        re_exec:
+          /* Updated successfully.  Re-exec ourselves.  */
+
+          remove_intermediates (0);
+
+          if (print_data_base_flag)
+            print_data_base ();
+
+          clean_jobserver (0);
+
+          if (makefiles != 0)
+            {
+              /* These names might have changed.  */
+              int i, j = 0;
+              for (i = 1; i < argc; ++i)
+                if (strneq (argv[i], "-f", 2)) /* XXX */
+                  {
+                    if (argv[i][2] == '\0')
+                      /* This cast is OK since we never modify argv.  */
+                      argv[++i] = (char *) makefiles->list[j];
+                    else
+                      argv[i] = xstrdup (concat (2, "-f", makefiles->list[j]));
+                    ++j;
+                  }
+            }
+
+          /* Add -o option for the stdin temporary file, if necessary.  */
+          nargc = argc;
+          if (stdin_nm)
+            {
+              void *m = xmalloc ((nargc + 2) * sizeof (char *));
+              aargv = m;
+              memcpy (aargv, argv, argc * sizeof (char *));
+              aargv[nargc++] = xstrdup (concat (2, "-o", stdin_nm));
+              aargv[nargc] = 0;
+              nargv = m;
+            }
+          else
+            nargv = (const char**)argv;
+
+          if (directories != 0 && directories->idx > 0)
+            {
+              int bad = 1;
+              if (directory_before_chdir != 0)
+                {
+                  if (chdir (directory_before_chdir) < 0)
+                      perror_with_name ("chdir", "");
+                  else
+                    bad = 0;
+                }
+              if (bad)
+                O (fatal, NILF,
+                   _("Couldn't change back to original directory."));
+            }
+
+          ++restarts;
+
+          if (ISDB (DB_BASIC))
+            {
+              const char **p;
+              printf (_("Re-executing[%u]:"), restarts);
+              for (p = nargv; *p != 0; ++p)
+                printf (" %s", *p);
+              putchar ('\n');
+              fflush (stdout);
+            }
+
+#ifndef _AMIGA
+          {
+            char **p;
+            for (p = environ; *p != 0; ++p)
+              {
+                if (strneq (*p, MAKELEVEL_NAME "=", MAKELEVEL_LENGTH+1))
+                  {
+                    *p = alloca (40);
+                    sprintf (*p, "%s=%u", MAKELEVEL_NAME, makelevel);
+#ifdef VMS
+                    vms_putenv_symbol (*p);
+#endif
+                  }
+                else if (strneq (*p, "MAKE_RESTARTS=", CSTRLEN ("MAKE_RESTARTS=")))
+                  {
+                    *p = alloca (40);
+                    sprintf (*p, "MAKE_RESTARTS=%s%u",
+                             OUTPUT_IS_TRACED () ? "-" : "", restarts);
+                    restarts = 0;
+                  }
+              }
+          }
+#else /* AMIGA */
+          {
+            char buffer[256];
+
+            sprintf (buffer, "%u", makelevel);
+            SetVar (MAKELEVEL_NAME, buffer, -1, GVF_GLOBAL_ONLY);
+
+            sprintf (buffer, "%s%u", OUTPUT_IS_TRACED () ? "-" : "", restarts);
+            SetVar ("MAKE_RESTARTS", buffer, -1, GVF_GLOBAL_ONLY);
+            restarts = 0;
+          }
+#endif
+
+          /* If we didn't set the restarts variable yet, add it.  */
+          if (restarts)
+            {
+              char *b = alloca (40);
+              sprintf (b, "MAKE_RESTARTS=%s%u",
+                       OUTPUT_IS_TRACED () ? "-" : "", restarts);
+              putenv (b);
+            }
+
+          fflush (stdout);
+          fflush (stderr);
+
+#ifdef _AMIGA
+          exec_command (nargv);
+          exit (0);
+#elif defined (__EMX__)
+          {
+            /* It is not possible to use execve() here because this
+               would cause the parent process to be terminated with
+               exit code 0 before the child process has been terminated.
+               Therefore it may be the best solution simply to spawn the
+               child process including all file handles and to wait for its
+               termination. */
+            int pid;
+            int r;
+            pid = child_execute_job (NULL, 1, nargv, environ);
+
+            /* is this loop really necessary? */
+            do {
+              pid = wait (&r);
+            } while (pid <= 0);
+            /* use the exit code of the child process */
+            exit (WIFEXITED(r) ? WEXITSTATUS(r) : EXIT_FAILURE);
+          }
+#else
+#ifdef SET_STACK_SIZE
+          /* Reset limits, if necessary.  */
+          if (stack_limit.rlim_cur)
+            setrlimit (RLIMIT_STACK, &stack_limit);
+#endif
+# if !defined(WINDOWS32) || !defined(CONFIG_NEW_WIN_CHILDREN)
+          exec_command ((char **)nargv, environ);
+# else
+          MkWinChildReExecMake ((char **)nargv, environ);
+# endif
+#endif
+          free (aargv);
+          break;
+        }
+
+      /* Free the makefile mtimes.  */
+      free (makefile_mtimes);
+    }
+
+  /* Set up 'MAKEFLAGS' again for the normal targets.  */
+  define_makeflags (1, 0);
+
+  /* Set always_make_flag if -B was given.  */
+  always_make_flag = always_make_set;
+
+  /* If restarts is set we haven't set up -W files yet, so do that now.  */
+  if (restarts && new_files != 0)
+    {
+      const char **p;
+      for (p = new_files->list; *p != 0; ++p)
+        {
+          struct file *f = enter_file (*p);
+          f->last_mtime = f->mtime_before_update = NEW_MTIME;
+        }
+    }
+
+  /* If there is a temp file from reading a makefile from stdin, get rid of
+     it now.  */
+  if (stdin_nm && unlink (stdin_nm) < 0 && errno != ENOENT)
+    perror_with_name (_("unlink (temporary file): "), stdin_nm);
+
+  /* If there were no command-line goals, use the default.  */
+  if (goals == 0)
+    {
+      char *p;
+
+      if (default_goal_var->recursive)
+        p = variable_expand (default_goal_var->value);
+      else
+        {
+          p = variable_buffer_output (variable_buffer, default_goal_var->value,
+                                      strlen (default_goal_var->value));
+          *p = '\0';
+          p = variable_buffer;
+        }
+
+      if (*p != '\0')
+        {
+          struct file *f = lookup_file (p);
+
+          /* If .DEFAULT_GOAL is a non-existent target, enter it into the
+             table and let the standard logic sort it out. */
+          if (f == 0)
+            {
+              struct nameseq *ns;
+
+              ns = PARSE_SIMPLE_SEQ (&p, struct nameseq);
+              if (ns)
+                {
+                  /* .DEFAULT_GOAL should contain one target. */
+                  if (ns->next != 0)
+                    O (fatal, NILF,
+                       _(".DEFAULT_GOAL contains more than one target"));
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+                  f = enter_file (strcache_add (ns->name));
+#else
+                  f = enter_file (ns->name);
+#endif
+
+                  ns->name = 0; /* It was reused by enter_file(). */
+                  free_ns_chain (ns);
+                }
+            }
+
+          if (f)
+            {
+              goals = alloc_goaldep ();
+              goals->file = f;
+            }
+        }
+    }
+  else
+    lastgoal->next = 0;
+
+
+  if (!goals)
+    {
+      if (read_files == 0)
+        O (fatal, NILF, _("No targets specified and no makefile found"));
+
+      O (fatal, NILF, _("No targets"));
+    }
+
+  /* Update the goals.  */
+
+  DB (DB_BASIC, (_("Updating goal targets....\n")));
+
+  {
+    switch (update_goal_chain (goals))
+    {
+      case us_none:
+        /* Nothing happened.  */
+        /* FALLTHROUGH */
+      case us_success:
+        /* Keep the previous result.  */
+        break;
+      case us_question:
+        /* We are under -q and would run some commands.  */
+        makefile_status = MAKE_TROUBLE;
+        break;
+      case us_failed:
+        /* Updating failed.  POSIX.2 specifies exit status >1 for this; */
+        makefile_status = MAKE_FAILURE;
+        break;
+    }
+
+    /* If we detected some clock skew, generate one last warning */
+    if (clock_skew_detected)
+      O (error, NILF,
+         _("warning:  Clock skew detected.  Your build may be incomplete."));
+
+    MAKE_STATS_2(if (uStartTick) printf("main ticks elapsed: %llu\n", (unsigned long long)(CURRENT_CLOCK_TICK() - uStartTick)) );
+    /* Exit.  */
+    die (makefile_status);
+  }
+
+  /* NOTREACHED */
+  exit (MAKE_SUCCESS);
+}
+
+/* Parsing of arguments, decoding of switches.  */
+
+static char options[1 + sizeof (switches) / sizeof (switches[0]) * 3];
+static struct option long_options[(sizeof (switches) / sizeof (switches[0])) +
+                                  (sizeof (long_option_aliases) /
+                                   sizeof (long_option_aliases[0]))];
+
+/* Fill in the string and vector for getopt.  */
+static void
+init_switches (void)
+{
+  char *p;
+  unsigned int c;
+  unsigned int i;
+
+  if (options[0] != '\0')
+    /* Already done.  */
+    return;
+
+  p = options;
+
+  /* Return switch and non-switch args in order, regardless of
+     POSIXLY_CORRECT.  Non-switch args are returned as option 1.  */
+  *p++ = '-';
+
+  for (i = 0; switches[i].c != '\0'; ++i)
+    {
+      long_options[i].name = (switches[i].long_name == 0 ? "" :
+                              switches[i].long_name);
+      long_options[i].flag = 0;
+      long_options[i].val = switches[i].c;
+      if (short_option (switches[i].c))
+        *p++ = switches[i].c;
+      switch (switches[i].type)
+        {
+        case flag:
+        case flag_off:
+        case ignore:
+          long_options[i].has_arg = no_argument;
+          break;
+
+        case string:
+        case strlist:
+        case filename:
+        case positive_int:
+        case floating:
+          if (short_option (switches[i].c))
+            *p++ = ':';
+          if (switches[i].noarg_value != 0)
+            {
+              if (short_option (switches[i].c))
+                *p++ = ':';
+              long_options[i].has_arg = optional_argument;
+            }
+          else
+            long_options[i].has_arg = required_argument;
+          break;
+        }
+    }
+  *p = '\0';
+  for (c = 0; c < (sizeof (long_option_aliases) /
+                   sizeof (long_option_aliases[0]));
+       ++c)
+    long_options[i++] = long_option_aliases[c];
+  long_options[i].name = 0;
+}
+
+
+/* Non-option argument.  It might be a variable definition.  */
+static void
+handle_non_switch_argument (const char *arg, int env)
+{
+  struct variable *v;
+
+  if (arg[0] == '-' && arg[1] == '\0')
+    /* Ignore plain '-' for compatibility.  */
+    return;
+
+#ifdef VMS
+  {
+    /* VMS DCL quoting can result in foo="bar baz" showing up here.
+       Need to remove the double quotes from the value. */
+    char * eq_ptr;
+    char * new_arg;
+    eq_ptr = strchr (arg, '=');
+    if ((eq_ptr != NULL) && (eq_ptr[1] == '"'))
+      {
+         int len;
+         int seg1;
+         int seg2;
+         len = strlen(arg);
+         new_arg = alloca(len);
+         seg1 = eq_ptr - arg + 1;
+         strncpy(new_arg, arg, (seg1));
+         seg2 = len - seg1 - 1;
+         strncpy(&new_arg[seg1], &eq_ptr[2], seg2);
+         new_arg[seg1 + seg2] = 0;
+         if (new_arg[seg1 + seg2 - 1] == '"')
+           new_arg[seg1 + seg2 - 1] = 0;
+         arg = new_arg;
+      }
+  }
+#endif
+  v = try_variable_definition (0, arg IF_WITH_VALUE_LENGTH_PARAM(NULL), o_command, 0);
+  if (v != 0)
+    {
+      /* It is indeed a variable definition.  If we don't already have this
+         one, record a pointer to the variable for later use in
+         define_makeflags.  */
+      struct command_variable *cv;
+
+      for (cv = command_variables; cv != 0; cv = cv->next)
+        if (cv->variable == v)
+          break;
+
+      if (! cv)
+        {
+          cv = xmalloc (sizeof (*cv));
+          cv->variable = v;
+          cv->next = command_variables;
+          command_variables = cv;
+        }
+    }
+  else if (! env)
+    {
+      /* Not an option or variable definition; it must be a goal
+         target!  Enter it as a file and add it to the dep chain of
+         goals.  */
+      struct file *f = enter_file (strcache_add (expand_command_line_file (arg)));
+      f->cmd_target = 1;
+
+      if (goals == 0)
+        {
+          goals = alloc_goaldep ();
+          lastgoal = goals;
+        }
+      else
+        {
+          lastgoal->next = alloc_goaldep ();
+          lastgoal = lastgoal->next;
+        }
+
+      lastgoal->file = f;
+
+      {
+        /* Add this target name to the MAKECMDGOALS variable. */
+        struct variable *gv;
+        const char *value;
+
+        gv = lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
+        if (gv == 0)
+          value = f->name;
+        else
+          {
+            /* Paste the old and new values together */
+            unsigned int oldlen, newlen;
+            char *vp;
+
+            oldlen = strlen (gv->value);
+            newlen = strlen (f->name);
+            vp = alloca (oldlen + 1 + newlen + 1);
+            memcpy (vp, gv->value, oldlen);
+            vp[oldlen] = ' ';
+            memcpy (&vp[oldlen + 1], f->name, newlen + 1);
+            value = vp;
+          }
+        define_variable_cname ("MAKECMDGOALS", value, o_default, 0);
+      }
+    }
+}
+
+/* Print a nice usage method.  */
+
+static void
+print_usage (int bad)
+{
+  const char *const *cpp;
+  FILE *usageto;
+
+  if (print_version_flag)
+    print_version ();
+
+  usageto = bad ? stderr : stdout;
+
+  fprintf (usageto, _("Usage: %s [options] [target] ...\n"), program);
+
+  for (cpp = usage; *cpp; ++cpp)
+    fputs (_(*cpp), usageto);
+
+#ifdef KMK
+  if (!remote_description || *remote_description == '\0')
+    fprintf (usageto, _("\nThis program is built for %s/%s/%s [" __DATE__ " " __TIME__ "]\n"),
+             KBUILD_HOST, KBUILD_HOST_ARCH, KBUILD_HOST_CPU);
+  else
+    fprintf (usageto, _("\nThis program is built for %s/%s/%s (%s) [" __DATE__ " " __TIME__ "]\n"),
+             KBUILD_HOST, KBUILD_HOST_ARCH, KBUILD_HOST_CPU, remote_description);
+#else  /* !KMK */
+  if (!remote_description || *remote_description == '\0')
+    fprintf (usageto, _("\nThis program built for %s\n"), make_host);
+  else
+    fprintf (usageto, _("\nThis program built for %s (%s)\n"),
+             make_host, remote_description);
+#endif /* !KMK */
+
+  fprintf (usageto, _("Report bugs to <bug-make@gnu.org>\n"));
+}
+
+/* Decode switches from ARGC and ARGV.
+   They came from the environment if ENV is nonzero.  */
+
+static void
+decode_switches (int argc, const char **argv, int env)
+{
+  int bad = 0;
+  register const struct command_switch *cs;
+  register struct stringlist *sl;
+  register int c;
+
+  /* getopt does most of the parsing for us.
+     First, get its vectors set up.  */
+
+  init_switches ();
+
+  /* Let getopt produce error messages for the command line,
+     but not for options from the environment.  */
+  opterr = !env;
+  /* Reset getopt's state.  */
+  optind = 0;
+
+  while (optind < argc)
+    {
+      const char *coptarg;
+
+      /* Parse the next argument.  */
+      c = getopt_long (argc, (char*const*)argv, options, long_options, NULL);
+      coptarg = optarg;
+      if (c == EOF)
+        /* End of arguments, or "--" marker seen.  */
+        break;
+      else if (c == 1)
+        /* An argument not starting with a dash.  */
+        handle_non_switch_argument (coptarg, env);
+      else if (c == '?')
+        /* Bad option.  We will print a usage message and die later.
+           But continue to parse the other options so the user can
+           see all he did wrong.  */
+        bad = 1;
+      else
+        for (cs = switches; cs->c != '\0'; ++cs)
+          if (cs->c == c)
+            {
+              /* Whether or not we will actually do anything with
+                 this switch.  We test this individually inside the
+                 switch below rather than just once outside it, so that
+                 options which are to be ignored still consume args.  */
+              int doit = !env || cs->env;
+
+              switch (cs->type)
+                {
+                default:
+                  abort ();
+
+                case ignore:
+                  break;
+
+                case flag:
+                case flag_off:
+                  if (doit)
+                    *(int *) cs->value_ptr = cs->type == flag;
+                  break;
+
+                case string:
+                case strlist:
+                case filename:
+                  if (!doit)
+                    break;
+
+                  if (! coptarg)
+                    coptarg = xstrdup (cs->noarg_value);
+                  else if (*coptarg == '\0')
+                    {
+                      char opt[2] = "c";
+                      const char *op = opt;
+
+                      if (short_option (cs->c))
+                        opt[0] = cs->c;
+                      else
+                        op = cs->long_name;
+
+                      error (NILF, strlen (op),
+                             _("the '%s%s' option requires a non-empty string argument"),
+                             short_option (cs->c) ? "-" : "--", op);
+                      bad = 1;
+                      break;
+                    }
+
+                  if (cs->type == string)
+                    {
+                      char **val = (char **)cs->value_ptr;
+                      free (*val);
+                      *val = xstrdup (coptarg);
+                      break;
+                    }
+
+                  sl = *(struct stringlist **) cs->value_ptr;
+                  if (sl == 0)
+                    {
+                      sl = xmalloc (sizeof (struct stringlist));
+                      sl->max = 5;
+                      sl->idx = 0;
+                      sl->list = xmalloc (5 * sizeof (char *));
+                      *(struct stringlist **) cs->value_ptr = sl;
+                    }
+                  else if (sl->idx == sl->max - 1)
+                    {
+                      sl->max += 5;
+                      /* MSVC erroneously warns without a cast here.  */
+                      sl->list = xrealloc ((void *)sl->list,
+                                           sl->max * sizeof (char *));
+                    }
+                  if (cs->type == filename)
+                    sl->list[sl->idx++] = expand_command_line_file (coptarg);
+                  else
+                    sl->list[sl->idx++] = xstrdup (coptarg);
+                  sl->list[sl->idx] = 0;
+                  break;
+
+                case positive_int:
+                  /* See if we have an option argument; if we do require that
+                     it's all digits, not something like "10foo".  */
+                  if (coptarg == 0 && argc > optind)
+                    {
+                      const char *cp;
+                      for (cp=argv[optind]; ISDIGIT (cp[0]); ++cp)
+                        ;
+                      if (cp[0] == '\0')
+                        coptarg = argv[optind++];
+                    }
+
+                  if (!doit)
+                    break;
+
+                  if (coptarg)
+                    {
+                      int i = atoi (coptarg);
+                      const char *cp;
+
+                      /* Yes, I realize we're repeating this in some cases.  */
+                      for (cp = coptarg; ISDIGIT (cp[0]); ++cp)
+                        ;
+
+                      if (i < 1 || cp[0] != '\0')
+                        {
+                          error (NILF, 0,
+                                 _("the '-%c' option requires a positive integer argument"),
+                                 cs->c);
+                          bad = 1;
+                        }
+                      else
+                        *(unsigned int *) cs->value_ptr = i;
+                    }
+                  else
+                    *(unsigned int *) cs->value_ptr
+                      = *(unsigned int *) cs->noarg_value;
+                  break;
+
+#ifndef NO_FLOAT
+                case floating:
+                  if (coptarg == 0 && optind < argc
+                      && (ISDIGIT (argv[optind][0]) || argv[optind][0] == '.'))
+                    coptarg = argv[optind++];
+
+                  if (doit)
+                    *(double *) cs->value_ptr
+                      = (coptarg != 0 ? atof (coptarg)
+                         : *(double *) cs->noarg_value);
+
+                  break;
+#endif
+                }
+
+              /* We've found the switch.  Stop looking.  */
+              break;
+            }
+    }
+
+  /* There are no more options according to getting getopt, but there may
+     be some arguments left.  Since we have asked for non-option arguments
+     to be returned in order, this only happens when there is a "--"
+     argument to prevent later arguments from being options.  */
+  while (optind < argc)
+    handle_non_switch_argument (argv[optind++], env);
+
+  if (!env && (bad || print_usage_flag))
+    {
+      print_usage (bad);
+      die (bad ? MAKE_FAILURE : MAKE_SUCCESS);
+    }
+
+  /* If there are any options that need to be decoded do it now.  */
+  decode_debug_flags ();
+  decode_output_sync_flags ();
+
+#if defined (WINDOWS32) && defined (CONFIG_NEW_WIN_CHILDREN)
+  /* validate the job object mode value . */
+  if (win_job_object_mode == NULL)
+    win_job_object_mode = xstrdup ("login");
+  else if (   strcmp (win_job_object_mode, "none") != 0
+           && strcmp (win_job_object_mode, "login") != 0
+           && strcmp (win_job_object_mode, "root") != 0
+           && strcmp (win_job_object_mode, "each") != 0)
+    OS (fatal, NILF, _("unknown job object mode '%s'"), win_job_object_mode);
+#endif
+}
+
+/* Decode switches from environment variable ENVAR (which is LEN chars long).
+   We do this by chopping the value into a vector of words, prepending a
+   dash to the first word if it lacks one, and passing the vector to
+   decode_switches.  */
+
+static void
+decode_env_switches (const char *envar, unsigned int len)
+{
+  char *varref = alloca (2 + len + 2);
+  char *value, *p, *buf;
+  int argc;
+  const char **argv;
+
+  /* Get the variable's value.  */
+  varref[0] = '$';
+  varref[1] = '(';
+  memcpy (&varref[2], envar, len);
+  varref[2 + len] = ')';
+  varref[2 + len + 1] = '\0';
+  value = variable_expand (varref);
+
+  /* Skip whitespace, and check for an empty value.  */
+  NEXT_TOKEN (value);
+  len = strlen (value);
+  if (len == 0)
+    return;
+
+  /* Allocate a vector that is definitely big enough.  */
+  argv = alloca ((1 + len + 1) * sizeof (char *));
+
+  /* getopt will look at the arguments starting at ARGV[1].
+     Prepend a spacer word.  */
+  argv[0] = 0;
+  argc = 1;
+
+  /* We need a buffer to copy the value into while we split it into words
+     and unquote it.  Set up in case we need to prepend a dash later.  */
+  buf = alloca (1 + len + 1);
+  buf[0] = '-';
+  p = buf+1;
+  argv[argc] = p;
+  while (*value != '\0')
+    {
+      if (*value == '\\' && value[1] != '\0')
+        ++value;                /* Skip the backslash.  */
+      else if (ISBLANK (*value))
+        {
+          /* End of the word.  */
+          *p++ = '\0';
+          argv[++argc] = p;
+          do
+            ++value;
+          while (ISBLANK (*value));
+          continue;
+        }
+      *p++ = *value++;
+    }
+  *p = '\0';
+  argv[++argc] = 0;
+  assert (p < buf + len + 2);
+
+  if (argv[1][0] != '-' && strchr (argv[1], '=') == 0)
+    /* The first word doesn't start with a dash and isn't a variable
+       definition, so add a dash.  */
+    argv[1] = buf;
+
+  /* Parse those words.  */
+  decode_switches (argc, argv, 1);
+}
+
+/* Quote the string IN so that it will be interpreted as a single word with
+   no magic by decode_env_switches; also double dollar signs to avoid
+   variable expansion in make itself.  Write the result into OUT, returning
+   the address of the next character to be written.
+   Allocating space for OUT twice the length of IN is always sufficient.  */
+
+static char *
+quote_for_env (char *out, const char *in)
+{
+  while (*in != '\0')
+    {
+      if (*in == '$')
+        *out++ = '$';
+      else if (ISBLANK (*in) || *in == '\\')
+        *out++ = '\\';
+      *out++ = *in++;
+    }
+
+  return out;
+}
+
+/* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
+   command switches.  Include options with args if ALL is nonzero.
+   Don't include options with the 'no_makefile' flag set if MAKEFILE.  */
+
+static struct variable *
+define_makeflags (int all, int makefile)
+{
+#ifdef KMK
+  static const char ref[] = "$(KMK_OVERRIDES)";
+#else
+  static /*<- bird*/ const char ref[] = "$(MAKEOVERRIDES)";
+#endif
+  static /*<- bird*/ const char posixref[] = "$(-*-command-variables-*-)";
+  static /*<- bird*/ const char evalref[] = "$(-*-eval-flags-*-)";
+  const struct command_switch *cs;
+  char *flagstring;
+  char *p;
+
+  /* We will construct a linked list of 'struct flag's describing
+     all the flags which need to go in MAKEFLAGS.  Then, once we
+     know how many there are and their lengths, we can put them all
+     together in a string.  */
+
+  struct flag
+    {
+      struct flag *next;
+      const struct command_switch *cs;
+      const char *arg;
+    };
+  struct flag *flags = 0;
+  struct flag *last = 0;
+  unsigned int flagslen = 0;
+#define ADD_FLAG(ARG, LEN) \
+  do {                                                                        \
+    struct flag *new = alloca (sizeof (struct flag));                         \
+    new->cs = cs;                                                             \
+    new->arg = (ARG);                                                         \
+    new->next = 0;                                                            \
+    if (! flags)                                                              \
+      flags = new;                                                            \
+    else                                                                      \
+      last->next = new;                                                       \
+    last = new;                                                               \
+    if (new->arg == 0)                                                        \
+      /* Just a single flag letter: " -x"  */                                 \
+      flagslen += 3;                                                          \
+    else                                                                      \
+      /* " -xfoo", plus space to escape "foo".  */                            \
+      flagslen += 1 + 1 + 1 + (3 * (LEN));                                    \
+    if (!short_option (cs->c))                                                \
+      /* This switch has no single-letter version, so we use the long.  */    \
+      flagslen += 2 + strlen (cs->long_name);                                 \
+  } while (0)
+
+  for (cs = switches; cs->c != '\0'; ++cs)
+    if (cs->toenv && (!makefile || !cs->no_makefile))
+      switch (cs->type)
+        {
+        case ignore:
+          break;
+
+        case flag:
+        case flag_off:
+          if ((!*(int *) cs->value_ptr) == (cs->type == flag_off)
+              && (cs->default_value == 0
+                  || *(int *) cs->value_ptr != *(int *) cs->default_value))
+            ADD_FLAG (0, 0);
+          break;
+
+        case positive_int:
+          if (all)
+            {
+              if ((cs->default_value != 0
+                   && (*(unsigned int *) cs->value_ptr
+                       == *(unsigned int *) cs->default_value)))
+                break;
+              else if (cs->noarg_value != 0
+                       && (*(unsigned int *) cs->value_ptr ==
+                           *(unsigned int *) cs->noarg_value))
+                ADD_FLAG ("", 0); /* Optional value omitted; see below.  */
+              else
+                {
+                  char *buf = alloca (30);
+                  sprintf (buf, "%u", *(unsigned int *) cs->value_ptr);
+                  ADD_FLAG (buf, strlen (buf));
+                }
+            }
+          break;
+
+#ifndef NO_FLOAT
+        case floating:
+          if (all)
+            {
+              if (cs->default_value != 0
+                  && (*(double *) cs->value_ptr
+                      == *(double *) cs->default_value))
+                break;
+              else if (cs->noarg_value != 0
+                       && (*(double *) cs->value_ptr
+                           == *(double *) cs->noarg_value))
+                ADD_FLAG ("", 0); /* Optional value omitted; see below.  */
+              else
+                {
+                  char *buf = alloca (100);
+                  sprintf (buf, "%g", *(double *) cs->value_ptr);
+                  ADD_FLAG (buf, strlen (buf));
+                }
+            }
+          break;
+#endif
+
+        case string:
+          if (all)
+            {
+              p = *((char **)cs->value_ptr);
+              if (p)
+                ADD_FLAG (p, strlen (p));
+            }
+          break;
+
+        case filename:
+        case strlist:
+          if (all)
+            {
+              struct stringlist *sl = *(struct stringlist **) cs->value_ptr;
+              if (sl != 0)
+                {
+                  unsigned int i;
+                  for (i = 0; i < sl->idx; ++i)
+                    ADD_FLAG (sl->list[i], strlen (sl->list[i]));
+                }
+            }
+          break;
+
+        default:
+          abort ();
+        }
+
+#undef  ADD_FLAG
+
+  /* Four more for the possible " -- ", plus variable references.  */
+  flagslen += 4 + CSTRLEN (posixref) + 1 + CSTRLEN (evalref) + 1;
+
+  /* Construct the value in FLAGSTRING.
+     We allocate enough space for a preceding dash and trailing null.  */
+  flagstring = alloca (1 + flagslen + 1);
+  memset (flagstring, '\0', 1 + flagslen + 1);
+  p = flagstring;
+
+  /* Start with a dash, for MFLAGS.  */
+  *p++ = '-';
+
+  /* Add simple options as a group.  */
+  while (flags != 0 && !flags->arg && short_option (flags->cs->c))
+    {
+      *p++ = flags->cs->c;
+      flags = flags->next;
+    }
+
+  /* Now add more complex flags: ones with options and/or long names.  */
+  while (flags)
+    {
+      *p++ = ' ';
+      *p++ = '-';
+
+      /* Add the flag letter or name to the string.  */
+      if (short_option (flags->cs->c))
+        *p++ = flags->cs->c;
+      else
+        {
+          /* Long options require a double-dash.  */
+          *p++ = '-';
+          strcpy (p, flags->cs->long_name);
+          p += strlen (p);
+        }
+      /* An omitted optional argument has an ARG of "".  */
+      if (flags->arg && flags->arg[0] != '\0')
+        {
+          if (!short_option (flags->cs->c))
+            /* Long options require '='.  */
+            *p++ = '=';
+          p = quote_for_env (p, flags->arg);
+        }
+      flags = flags->next;
+    }
+
+  /* If no flags at all, get rid of the initial dash.  */
+  if (p == &flagstring[1])
+    {
+      flagstring[0] = '\0';
+      p = flagstring;
+    }
+
+#ifdef KMK
+  /* Define MFLAGS before appending variable definitions.  Omit an initial
+     empty dash.  Since MFLAGS is not parsed for flags, there is no reason to
+     override any makefile redefinition.  */
+  define_variable_cname ("MFLAGS",
+                         flagstring + (flagstring[0] == '-' && flagstring[1] == ' ' ? 2 : 0),
+                         o_env, 1);
+#endif /* !KMK */
+
+  /* Write a reference to -*-eval-flags-*-, which contains all the --eval
+     flag options.  */
+  if (eval_strings)
+    {
+      *p++ = ' ';
+      memcpy (p, evalref, CSTRLEN (evalref));
+      p += CSTRLEN (evalref);
+    }
+
+  if (all && command_variables)
+    {
+      /* Write a reference to $(MAKEOVERRIDES), which contains all the
+         command-line variable definitions.  Separate the variables from the
+         switches with a "--" arg.  */
+
+      strcpy (p, " -- ");
+      p += 4;
+
+      /* Copy in the string.  */
+      if (posix_pedantic)
+        {
+          memcpy (p, posixref, CSTRLEN (posixref));
+          p += CSTRLEN (posixref);
+        }
+      else
+        {
+          memcpy (p, ref, CSTRLEN (ref));
+          p += CSTRLEN (ref);
+        }
+    }
+
+  /* If there is a leading dash, omit it.  */
+  if (flagstring[0] == '-')
+    ++flagstring;
+
+#ifdef KMK
+  /* Provide simple access to some of the options. */
+  {
+    char val[32];
+    sprintf (val, "%u", job_slots ? job_slots : master_job_slots);
+    define_variable_cname ("KMK_OPTS_JOBS", val, o_default, 1);
+    sprintf (val, "%u", default_job_slots);
+    define_variable_cname ("KMK_OPTS_JOBS_DEFAULT", val, o_default, 1);
+    define_variable_cname ("KMK_OPTS_KEEP_GOING", keep_going_flag ? "1" : "0", o_default, 1);
+    define_variable_cname ("KMK_OPTS_JUST_PRINT", just_print_flag ? "1" : "0", o_default, 1);
+    define_variable_cname ("KMK_OPTS_PRETTY_COMMAND_PRINTING",
+                           pretty_command_printing ? "1" : "0", o_default, 1);
+    sprintf (val, "%u", process_priority);
+    define_variable_cname ("KMK_OPTS_PRORITY", val, o_default, 1);
+    sprintf (val, "%u", process_affinity);
+    define_variable_cname ("KMK_OPTS_AFFINITY", val, o_default, 1);
+# if defined (CONFIG_WITH_MAKE_STATS) || defined (CONFIG_WITH_MINIMAL_STATS)
+    define_variable_cname ("KMK_OPTS_STATISTICS", make_expensive_statistics ? "1" : "0",
+                           o_default, 1);
+# endif
+# ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+    sprintf (val, "%u", print_time_min);
+    define_variable_cname ("KMK_OPTS_PRINT_TIME", val, o_default, 1);
+# endif
+  }
+#endif
+
+  /* This used to use o_env, but that lost when a makefile defined MAKEFLAGS.
+     Makefiles set MAKEFLAGS to add switches, but we still want to redefine
+     its value with the full set of switches.  Then we used o_file, but that
+     lost when users added -e, causing a previous MAKEFLAGS env. var. to take
+     precedence over the new one.  Of course, an override or command
+     definition will still take precedence.  */
+#ifdef KMK
+  return define_variable_cname ("KMK_FLAGS", flagstring,
+                                env_overrides ? o_env_override : o_file, 1);
+#else
+  return define_variable_cname ("MAKEFLAGS", flagstring,
+                                env_overrides ? o_env_override : o_file, 1);
+#endif
+}
+
+/* Print version information.  */
+
+static void
+print_version (void)
+{
+  static int printed_version = 0;
+
+  const char *precede = print_data_base_flag ? "# " : "";
+
+  if (printed_version)
+    /* Do it only once.  */
+    return;
+
+#ifdef KMK
+  printf ("%skmk - kBuild version %d.%d.%d (r%u)\n\
+\n",
+          precede, KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR,
+          KBUILD_VERSION_PATCH, KBUILD_SVN_REV);
+
+  printf("%sBased on GNU Make %s:\n", precede, version_string);
+
+#else  /* !KMK */
+  printf ("%sGNU Make %s\n", precede, version_string);
+
+  if (!remote_description || *remote_description == '\0')
+    printf (_("%sBuilt for %s\n"), precede, make_host);
+  else
+    printf (_("%sBuilt for %s (%s)\n"),
+            precede, make_host, remote_description);
+#endif /* !KMK */
+
+  /* Print this untranslated.  The coding standards recommend translating the
+     (C) to the copyright symbol, but this string is going to change every
+     year, and none of the rest of it should be translated (including the
+     word "Copyright"), so it hardly seems worth it.  */
+
+  printf ("%sCopyright (C) 1988-2016 Free Software Foundation, Inc.\n",
+          precede);
+
+  printf (_("%sLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
+%sThis is free software: you are free to change and redistribute it.\n\
+%sThere is NO WARRANTY, to the extent permitted by law.\n"),
+            precede, precede, precede);
+
+#ifdef KMK
+  printf ("\n\
+%skBuild modifications:\n\
+%s Copyright (c) 2005-2018 knut st. osmundsen.\n\
+\n\
+%skmkbuiltin commands derived from *BSD sources:\n\
+%s Copyright (c) 1983 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994\n\
+%s  The Regents of the University of California. All rights reserved.\n\
+%s Copyright (c) 1998  Todd C. Miller <Todd.Miller@courtesan.com>\n",
+          precede, precede, precede, precede, precede, precede);
+
+# ifdef KBUILD_PATH
+  printf (_("\n\
+%sKBUILD_PATH:     '%s' (default '%s')\n\
+%sKBUILD_BIN_PATH: '%s' (default '%s')\n\
+\n"),
+          precede, get_kbuild_path(), KBUILD_PATH,
+          precede, get_kbuild_bin_path(), KBUILD_BIN_PATH);
+# else  /* !KBUILD_PATH */
+  printf ("\n\
+%sKBUILD_PATH:     '%s'\n\
+%sKBUILD_BIN_PATH: '%s'\n\
+\n",
+          precede, get_kbuild_path(),
+          precede, get_kbuild_bin_path());
+# endif /* !KBUILD_PATH */
+
+  if (!remote_description || *remote_description == '\0')
+    printf (_("%sThis program is a %s build, built for %s/%s/%s [" __DATE__ " " __TIME__ "]\n\n"),
+            precede, KBUILD_TYPE, KBUILD_HOST, KBUILD_HOST_ARCH, KBUILD_HOST_CPU);
+  else
+    printf (_("%sThis program is a %s build, built for %s/%s/%s (%s) [" __DATE__ " " __TIME__ "]\n\n"),
+            precede, KBUILD_TYPE, KBUILD_HOST, KBUILD_HOST_ARCH, KBUILD_HOST_CPU, remote_description);
+
+#endif /* KMK */
+
+  printed_version = 1;
+
+  /* Flush stdout so the user doesn't have to wait to see the
+     version information while make thinks about things.  */
+  fflush (stdout);
+}
+
+/* Print a bunch of information about this and that.  */
+
+static void
+print_data_base (void)
+{
+  time_t when = time ((time_t *) 0);
+
+  print_version ();
+
+  printf (_("\n# Make data base, printed on %s"), ctime (&when));
+
+  print_variable_data_base ();
+  print_dir_data_base ();
+  print_rule_data_base ();
+  print_file_data_base ();
+  print_vpath_data_base ();
+#ifdef KMK
+  print_kbuild_data_base ();
+#endif
+#ifndef CONFIG_WITH_STRCACHE2
+  strcache_print_stats ("#");
+#else
+  strcache2_print_stats_all ("#");
+#endif
+#ifdef CONFIG_WITH_ALLOC_CACHES
+  alloccache_print_all ();
+#endif
+#ifdef CONFIG_WITH_COMPILER
+  kmk_cc_print_stats ();
+#endif
+
+  when = time ((time_t *) 0);
+  printf (_("\n# Finished Make data base on %s\n"), ctime (&when));
+}
+#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
+
+static void
+print_stats ()
+{
+  time_t when;
+
+  when = time ((time_t *) 0);
+  printf (_("\n# Make statistics, printed on %s"), ctime (&when));
+
+  /* Allocators: */
+# ifdef CONFIG_WITH_COMPILER
+  kmk_cc_print_stats ();
+# endif
+# ifndef CONFIG_WITH_STRCACHE2
+  strcache_print_stats ("#");
+# else
+  strcache2_print_stats_all ("#");
+# endif
+# ifdef CONFIG_WITH_ALLOC_CACHES
+  alloccache_print_all ();
+# endif
+  print_heap_stats ();
+
+  /* Make stuff: */
+  print_variable_stats ();
+  print_file_stats ();
+  print_dir_stats ();
+# ifdef KMK
+  print_kbuild_define_stats ();
+# endif
+# ifdef CONFIG_WITH_KMK_BUILTIN_STATS
+  kmk_builtin_print_stats (stdout, "# ");
+# endif
+# ifdef CONFIG_WITH_COMPILER
+  kmk_cc_print_stats ();
+# endif
+
+  when = time ((time_t *) 0);
+  printf (_("\n# Finished Make statistics on %s\n"), ctime (&when));
+}
+#endif /* CONFIG_WITH_PRINT_STATS_SWITCH */
+
+static void
+clean_jobserver (int status)
+{
+  /* Sanity: have we written all our jobserver tokens back?  If our
+     exit status is 2 that means some kind of syntax error; we might not
+     have written all our tokens so do that now.  If tokens are left
+     after any other error code, that's bad.  */
+
+  if (jobserver_enabled() && jobserver_tokens)
+    {
+      if (status != 2)
+        ON (error, NILF,
+            "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
+            jobserver_tokens);
+      else
+        /* Don't write back the "free" token */
+        while (--jobserver_tokens)
+          jobserver_release (0);
+    }
+
+
+  /* Sanity: If we're the master, were all the tokens written back?  */
+
+  if (master_job_slots)
+    {
+      /* We didn't write one for ourself, so start at 1.  */
+      unsigned int tokens = 1 + jobserver_acquire_all ();
+
+      if (tokens != master_job_slots)
+        ONN (error, NILF,
+             "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
+             tokens, master_job_slots);
+
+      reset_jobserver ();
+    }
+}
+
+/* Exit with STATUS, cleaning up as necessary.  */
+
+void
+#ifdef KMK
+die_with_job_output (int status, struct output *out)
+#else
+die (int status)
+#endif
+{
+  static char dying = 0;
+#ifdef KMK
+  static char need_2nd_error = 0;
+  static char need_2nd_error_output = 0;
+#endif
+
+  if (!dying)
+    {
+      int err;
+
+      dying = 1;
+
+      if (print_version_flag)
+        print_version ();
+
+#ifdef KMK
+      /*  Flag 2nd error message. */
+      if (status != 0
+          && (   job_slots_used > 0
+              || print_data_base_flag
+              || print_stats_flag))
+        {
+          need_2nd_error = 1;
+          need_2nd_error_output = job_slots_used >= 2
+                               && out != NULL
+                               && out != &make_sync;
+          if (need_2nd_error_output)
+            output_metered = 0;
+        }
+#endif /* KMK */
+
+      /* Wait for children to die.  */
+      err = (status != 0);
+      while (job_slots_used > 0)
+        reap_children (1, err);
+
+      /* Let the remote job module clean up its state.  */
+      remote_cleanup ();
+
+      /* Remove the intermediate files.  */
+      remove_intermediates (0);
+
+      if (print_data_base_flag)
+        print_data_base ();
+
+#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
+      if (print_stats_flag)
+        print_stats ();
+#endif
+      if (verify_flag)
+        verify_file_data_base ();
+
+#ifdef NDEBUG /* bird: Don't waste time on debug sanity checks.  */
+      if (print_data_base_flag || db_level)
+#endif
+        verify_file_data_base ();
+
+      clean_jobserver (status);
+
+      if (output_context)
+        {
+          /* die() might be called in a recipe output context due to an
+             $(error ...) function.  */
+          output_close (output_context);
+
+          if (output_context != &make_sync)
+            output_close (&make_sync);
+
+          OUTPUT_UNSET ();
+        }
+
+      output_close (NULL);
+
+      /* Try to move back to the original directory.  This is essential on
+         MS-DOS (where there is really only one process), and on Unix it
+         puts core files in the original directory instead of the -C
+         directory.  Must wait until after remove_intermediates(), or unlinks
+         of relative pathnames fail.  */
+      if (directory_before_chdir != 0)
+        {
+          /* If it fails we don't care: shut up GCC.  */
+          int _x UNUSED;
+          _x = chdir (directory_before_chdir);
+        }
+
+#ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+      if (print_time_min != -1)
+        {
+          big_int elapsed = nano_timestamp () - make_start_ts;
+          if (elapsed >= print_time_min * BIG_INT_C(1000000000))
+            {
+              char buf[64];
+              format_elapsed_nano (buf, sizeof (buf), elapsed);
+              message (1, strlen (buf), _("%*s"), print_time_width, buf);
+            }
+        }
+#endif
+    }
+
+#ifdef KMK
+  /* The failure might be lost in a -j <lots> run, so mention the
+     failure again before exiting. */
+  if (need_2nd_error != 0)
+    ON (error, NILF, _("*** Exiting with status %d"), status);
+  if (out)
+  {
+      out->dont_truncate = 0;
+      if (need_2nd_error_output && output_metered > 20)
+        output_dump (out);
+      else
+        output_reset (out);
+      output_close (out);
+  }
+#endif
+
+  exit (status);
+}
+
+#ifdef KMK
+void die (int status)
+{
+    die_with_job_output (status, NULL);
+}
+#endif
diff --git a/src/kmk/maintMakefile b/src/kmk/maintMakefile
new file mode 100644
index 0000000..d817efc
--- /dev/null
+++ b/src/kmk/maintMakefile
@@ -0,0 +1,414 @@
+# Maintainer-only makefile segment.  This contains things that are relevant
+# only if you have the full copy of the GNU make sources from the Git
+# tree, not a dist copy.
+
+BUGLIST := bug-make@gnu.org
+
+# These are related to my personal setup.
+GPG_FINGERPRINT := 6338B6D4
+
+# SRCROOTDIR is just a handy location to keep source files in
+SRCROOTDIR ?= $(HOME)/src
+
+# Where the gnulib project has been locally cloned
+GNULIBDIR ?= $(SRCROOTDIR)/gnulib
+
+# Where to put the CVS checkout of the GNU web repository
+GNUWEBDIR ?= $(SRCROOTDIR)/gnu-www
+
+# Where to put the CVS checkout of the GNU make web repository
+MAKEWEBDIR ?= $(SRCROOTDIR)/make/make-web
+
+# We like mondo-warnings!
+ifeq ($(KBUILD_TARGET),openbsd) # bird
+AM_CFLAGS += -Wall -Wwrite-strings -Wshadow -Wpointer-arith -Wbad-function-cast
+else
+AM_CFLAGS += -Wall -Wwrite-strings -Wextra -Wdeclaration-after-statement -Wshadow -Wpointer-arith -Wbad-function-cast
+endif
+
+MAKE_MAINTAINER_MODE := -DMAKE_MAINTAINER_MODE
+AM_CPPFLAGS += $(MAKE_MAINTAINER_MODE)
+
+# I want this one but I have to wait for the const cleanup!
+# -Wwrite-strings
+
+# Find the glob source files... this might be dangerous, but we're maintainers!
+globsrc := $(wildcard glob/*.c)
+globhdr := $(wildcard glob/*.h)
+
+TEMPLATES = README README.DOS README.W32 README.OS2 \
+	    config.ami configh.dos config.h.W32 config.h-vms
+MTEMPLATES = Makefile.DOS SMakefile
+
+# These are built as a side-effect of the dist rule
+#all-am: $(TEMPLATES) $(MTEMPLATES) build.sh.in
+
+# Create preprocessor output files--GCC specific!
+%.i : %.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) -E -dD -o $@ $<
+
+# General rule for turning a .template into a regular file.
+#
+$(TEMPLATES) : % : %.template Makefile
+	rm -f $@
+	sed -e 's@%VERSION%@$(VERSION)@g' \
+	    -e 's@%PACKAGE%@$(PACKAGE)@g' \
+	  $< > $@
+	chmod a-w $@
+
+# Construct Makefiles by adding on dependencies, etc.
+#
+$(MTEMPLATES) : % : %.template .dep_segment Makefile
+	rm -f $@
+	sed -e 's@%VERSION%@$(VERSION)@g' \
+	    -e 's@%PROGRAMS%@$(bin_PROGRAMS)@g' \
+	    -e 's@%SOURCES%@$(filter-out remote-%,$(make_SOURCES)) remote-$$(REMOTE).c@g' \
+	    -e 's@%OBJECTS%@$(filter-out remote-%,$(make_OBJECTS)) remote-$$(REMOTE).o@g' \
+	    -e 's@%GLOB_SOURCES%@$(globsrc) $(globhdr)@g' \
+	    -e 's@%GLOB_OBJECTS%@$(globsrc:glob/%.c=%.o)@g' \
+	  $< > $@
+	echo >>$@; echo '# --------------- DEPENDENCIES' >>$@; echo '#' >>$@; \
+	  cat $(word 2,$^) >>$@
+	chmod a-w $@
+
+NMakefile: NMakefile.template .dep_segment Makefile
+	rm -f $@
+	cp $< $@
+	echo >>$@; echo '# --------------- DEPENDENCIES' >>$@; echo '#' >>$@; \
+	  sed 's/^\([^ ]*\)\.o:/$$(OUTDIR)\/\1.obj:/' $(word 2,$^) >>$@
+	chmod a-w $@
+
+# Construct build.sh.in
+#
+build.sh.in: build.template Makefile
+	rm -f $@
+	sed -e 's@%objs%@$(patsubst %.o,%.$${OBJEXT},$(filter-out remote-%,$(make_OBJECTS)))@g' \
+	    -e 's@%globobjs%@$(patsubst %.c,%.$${OBJEXT},$(globsrc))@g' \
+	  $< > $@
+	chmod a-w+x $@
+
+
+# Use automake to build a dependency list file, for "foreign" makefiles like
+# Makefile.DOS.
+#
+# Automake used to have a --generate-deps flag, but it's gone now, so we have
+# to do it ourselves.
+#
+DEP_FILES := $(wildcard $(DEPDIR)/*.Po)
+.dep_segment: Makefile.am maintMakefile $(DEP_FILES)
+	rm -f $@
+	(for f in $(DEPDIR)/*.Po; do \
+	   echo ""; \
+	   echo "# $$f"; \
+	   sed	-e '/^[^:]*\.[ch] *:/d' \
+		-e 's, /usr/[^ ]*,,g' \
+		-e 's, $(srcdir)/, ,g' \
+		-e '/^ *\\$$/d' \
+		-e '/^ *$$/d' \
+		< $$f; \
+	 done) > $@
+
+# Cleaning
+
+GIT :=	git
+
+# git-clean:      Clean all "ignored" files.  Leave untracked files.
+# git-very-clean: Clean all files that aren't stored in source control.
+
+.PHONY: git-clean git-very-clean
+git-clean:
+	-$(GIT) clean -fdX
+git-very-clean: git-clean
+	-$(GIT) clean -fd
+
+
+
+## ---------------------- ##
+## Generating ChangeLog.  ##
+## ---------------------- ##
+
+gl2cl-date := 2013-10-10
+gl2cl := $(GNULIBDIR)/build-aux/gitlog-to-changelog
+
+# Rebuild the changelog whenever a new commit is added
+ChangeLog: .check-git-HEAD
+	if test -f '$(gl2cl)'; then \
+	    '$(gl2cl)' --since='$(gl2cl-date)' > '$@'; \
+	else \
+	    echo "WARNING: $(gl2cl) is not available.  No $@ generated."; \
+	fi
+
+.PHONY: .check-git-HEAD
+.check-git-HEAD:
+	sha="`git rev-parse HEAD`"; \
+	[ -f '$@' ] && [ "`cat '$@' 2>/dev/null`" = "$$sha" ] \
+	    || echo "$$sha" > '$@'
+
+
+## ---------------- ##
+## Updating files.  ##
+## ---------------- ##
+RSYNC = rsync -Lrtvz
+WGET = wget --passive-ftp -np -nv
+ftp-gnu = ftp://ftp.gnu.org/gnu
+
+move_if_change =  if test -r $(target) && cmp -s $(target).t $(target); then \
+		    echo $(target) is unchanged; rm -f $(target).t; \
+		  else \
+		    mv -f $(target).t $(target); \
+		  fi
+
+# ------------------- #
+# Updating PO files.  #
+# ------------------- #
+
+# PO archive mirrors --- Be careful; some might not be fully populated!
+#   ftp://ftp.unex.es/pub/gnu-i18n/po/maint/
+#   http://translation.sf.net/maint/
+#   ftp://tiger.informatik.hu-berlin.de/pub/po/maint/
+
+po_wget_flags =	--recursive --level=1 --no-directories --no-check-certificate
+po_repo = http://translationproject.org/latest/$(PACKAGE)
+po_sync = translationproject.org::tp/latest/$(PACKAGE)/
+
+.PHONY: do-po-update po-update
+do-po-update:
+	tmppo="/tmp/po-$(PACKAGE)-$(VERSION).$$$$" \
+	  && rm -rf "$$tmppo" \
+	  && mkdir "$$tmppo" \
+	  && $(RSYNC) $(po_sync)  "$$tmppo" \
+	  && cp "$$tmppo"/*.po $(top_srcdir)/po \
+	  && rm -rf "$$tmppo"
+	cd po && $(MAKE) update-po
+	$(MAKE) po-check
+
+po-update:
+	[ -d "po" ] && $(MAKE) do-po-update
+
+# -------------------------- #
+# Updating GNU build files.  #
+# -------------------------- #
+
+# The following pseudo table associates a local directory and a URL
+# with each of the files that belongs to some other package and is
+# regularly updated from the specified URL.
+
+cvs-url = http://savannah.gnu.org/cgi-bin/viewcvs/~checkout~
+git-url = http://git.savannah.gnu.org/cgit
+target = $(patsubst get-%,%,$@)
+
+config-url = $(git-url)/config.git/plain/$(patsubst get-config/%,%,$@)
+get-config/config.guess get-config/config.sub:
+	@echo $(WGET) $(config-url) -O $(target) \
+	  && $(WGET) $(config-url) -O $(target).t \
+	  && $(move_if_change)
+
+gnulib-url = $(git-url)/gnulib.git/plain/build-aux/$(patsubst get-config/%,%,$@)
+get-config/texinfo.tex:
+	@echo $(WGET) $(gnulib-url) -O $(target) \
+	  && $(WGET) $(gnulib-url) -O $(target).t \
+	  && $(move_if_change)
+
+gnustandards-url = $(cvs-url)/gnustandards/gnustandards/$(patsubst get-doc/%,%,$@)
+get-doc/make-stds.texi get-doc/fdl.texi:
+	@echo $(WGET) $(gnustandards-url) -O $(target) \
+	  && $(WGET) $(gnustandards-url) -O $(target).t \
+	  && $(move_if_change)
+
+.PHONY: scm-update
+scm-update: get-config/texinfo.tex get-config/config.guess get-config/config.sub get-doc/make-stds.texi get-doc/fdl.texi
+
+
+# --------------------- #
+# Updating everything.  #
+# --------------------- #
+
+.PHONY: update
+update: po-update scm-update
+
+
+# ---------------------------------- #
+# Alternative configuration checks.  #
+# ---------------------------------- #
+
+.PHONY: check-alt-config
+check-alt-config: \
+	checkcfg.--disable-job-server \
+	checkcfg.--disable-load \
+	checkcfg.--without-guile \
+	checkcfg.CPPFLAGS^-DNO_OUTPUT_SYNC \
+	checkcfg.CPPFLAGS^-DNO_ARCHIVES
+
+# Trick GNU make so it doesn't run the submake as a recursive make.
+NR_MAKE = $(MAKE)
+
+# Check builds both with build.sh and with make
+checkcfg.%: distdir
+	@echo "Building $@ (output in checkcfg.$*.log)"
+	@exec >'checkcfg.$*.log' 2>&1; \
+	   rm -rf $(distdir)/_build \
+	&& mkdir $(distdir)/_build \
+	&& cd $(distdir)/_build \
+	&& echo "Testing configure with $(subst ^,=,$*)" \
+	&& ../configure --srcdir=.. $(subst ^,=,$*) \
+		$(AM_DISTCHECK_CONFIGURE_FLAGS) $(DISTCHECK_CONFIGURE_FLAGS) \
+		CFLAGS='$(AM_CFLAGS)' \
+	&& ./build.sh \
+	&& ./make $(AM_MAKEFLAGS) check \
+	&& rm -f *.o make \
+	&& $(NR_MAKE) $(AM_MAKEFLAGS) \
+	&& ./make $(AM_MAKEFLAGS) check
+
+
+## --------------- ##
+## Sanity checks.  ##
+## --------------- ##
+
+# Before we build a distribution be sure we run our local checks
+#distdir: local-check
+
+.PHONY: local-check po-check changelog-check
+
+# Checks that don't require Git.  Run 'changelog-check' last as
+# previous test may reveal problems requiring new ChangeLog entries.
+local-check: po-check changelog-check
+
+# copyright-check writable-files
+
+changelog-check:
+	if head $(top_srcdir)/ChangeLog | grep 'Version $(VERSION)' >/dev/null; then \
+	  :; \
+	else \
+	  echo "$(VERSION) not in ChangeLog" 1>&2; \
+	  exit 1; \
+	fi
+
+# Verify that all source files using _() are listed in po/POTFILES.in.
+# Ignore makeint.h; it defines _().
+po-check:
+	if test -f po/POTFILES.in; then \
+	  grep '^[^#]' po/POTFILES.in | sort > $@-1; \
+	  $(PERL) -wn -e 'if (/\b_\(/) { $$ARGV eq "./makeint.h" || print "$$ARGV\n" and close ARGV }' `find . -name '*.[ch]'` | sed 's,^\./,,' | sort > $@-2; \
+	  diff -u $@-1 $@-2 || exit 1; \
+	  rm -f $@-1 $@-2; \
+	fi
+
+
+## --------------- ##
+## Generate docs.  ##
+## --------------- ##
+
+.PHONY: update-makeweb gendocs
+
+CVS = cvs
+
+makeweb-repo = $(USER)@cvs.sv.gnu.org:/web/make
+gnuweb-repo = :pserver:anonymous@cvs.sv.gnu.org:/web/www
+gnuweb-dir = www/server/standards
+
+# Get the GNU make web page boilerplate etc.
+update-makeweb:
+	[ -d '$(MAKEWEBDIR)' ] || mkdir -p '$(MAKEWEBDIR)'
+	[ -d '$(MAKEWEBDIR)'/CVS ] \
+	    && { cd '$(MAKEWEBDIR)' && $(CVS) update; } \
+	    || { mkdir -p '$(dir $(MAKEWEBDIR))' && cd '$(dir $(MAKEWEBDIR))' \
+		 && $(CVS) -d $(makeweb-repo) co -d '$(notdir $(MAKEWEBDIR))' make; }
+
+# Get the GNU web page boilerplate etc.
+update-gnuweb:
+	[ -d '$(GNUWEBDIR)' ] || mkdir -p '$(GNUWEBDIR)'
+	[ -d '$(GNUWEBDIR)/$(gnuweb-dir)'/CVS ] \
+	    && { cd '$(GNUWEBDIR)/$(gnuweb-dir)' && $(CVS) update; } \
+	    || { cd '$(GNUWEBDIR)' && $(CVS) -d $(gnuweb-repo) co '$(gnuweb-dir)'; }
+
+gendocs: update-gnuweb update-makeweb
+	cp $(GNULIBDIR)/doc/gendocs_template doc
+	cd doc \
+	  && rm -rf doc/manual \
+	  && $(GNULIBDIR)/build-aux/gendocs.sh --email '$(BUGLIST)' \
+		make 'GNU Make Manual'
+	find '$(MAKEWEBDIR)'/manual \( -name CVS -prune \) -o \( -name '[!.]*' -type f -exec rm -f '{}' \; \)
+	cp -r doc/manual '$(MAKEWEBDIR)'
+	@echo 'Status of $(MAKEWEBDIR) repo:' && cd '$(MAKEWEBDIR)' \
+	    && cvs -q -n update | grep -v '^M ' \
+	    && echo '- cvs add <new files>' \
+	    && echo '- cvs remove <deleted files>' \
+	    && echo '- cvs commit' \
+	    && echo '- cvs tag make-$(subst .,-,$(VERSION))'
+
+## ------------------------- ##
+## Make release targets.     ##
+## ------------------------- ##
+
+.PHONY: tag-release
+tag-release:
+	case '$(VERSION)' in \
+	    (*.*.9*) message=" candidate" ;; \
+	    (*)      message= ;; \
+	esac; \
+	$(GIT) tag -m "GNU Make release$$message $(VERSION)" -u '$(GPG_FINGERPRINT)' '$(VERSION)'
+
+## ------------------------- ##
+## GNU FTP upload artifacts. ##
+## ------------------------- ##
+
+# This target creates the upload artifacts.
+# Sign it with my key.  If you don't have my key/passphrase then sorry,
+# you're SOL! :)
+
+GPG = gpg
+GPGFLAGS = -u $(GPG_FINGERPRINT)
+
+DIST_ARCHIVES_SIG = $(addsuffix .sig,$(DIST_ARCHIVES))
+DIST_ARCHIVES_DIRECTIVE = $(addsuffix .directive.asc,$(DIST_ARCHIVES))
+
+# A simple rule to test signing, etc.
+.PHONY: distsign
+distsign: $(DIST_ARCHIVES_SIG) $(DIST_ARCHIVES_DIRECTIVE)
+
+%.sig : %
+	@echo "Signing file '$<':"
+	$(GPG) $(GPGFLAGS) -o "$@" -b "$<"
+
+%.directive.asc: %
+	@echo "Creating directive file '$@':"
+	@( \
+	   echo 'version: 1.1'; \
+	   echo 'directory: make'; \
+	   echo 'filename: $*'; \
+	   echo 'comment: Official upload of GNU make version $(VERSION)'; \
+	 ) > "$*.directive"
+	$(GPG) $(GPGFLAGS) -o "$@" --clearsign "$*.directive"
+	@rm -f "$*.directive"
+
+# Upload the artifacts
+
+FTPPUT = ncftpput
+gnu-upload-host = ftp-upload.gnu.org
+gnu-upload-dir  = /incoming
+
+
+UPLOADS = upload-alpha upload-ftp
+.PHONY: $(UPLOADS)
+$(UPLOADS): $(DIST_ARCHIVES) $(DIST_ARCHIVES_SIG) $(DIST_ARCHIVES_DIRECTIVE)
+	$(FTPPUT) "$(gnu-upload-host)" "$(gnu-upload-dir)/$(@:upload-%=%)" $^
+
+
+# Rebuild Makefile.in if this file is modifed.
+Makefile.in: maintMakefile
+
+# Copyright (C) 1997-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/make.1 b/src/kmk/make.1
new file mode 100644
index 0000000..d4bd284
--- /dev/null
+++ b/src/kmk/make.1
@@ -0,0 +1,381 @@
+.TH MAKE 1 "28 February 2016" "GNU" "User Commands"
+.SH NAME
+make \- GNU make utility to maintain groups of programs
+.SH SYNOPSIS
+.B make
+[\fIOPTION\fR]... [\fITARGET\fR]...
+.SH DESCRIPTION
+.LP
+The
+.I make
+utility will determine automatically which pieces of a large program need to
+be recompiled, and issue the commands to recompile them.  The manual describes
+the GNU implementation of
+.BR make ,
+which was written by Richard Stallman and Roland McGrath, and is currently
+maintained by Paul Smith.  Our examples show C programs, since they are very
+common, but you can use
+.B make
+with any programming language whose compiler can be run with a shell command.
+In fact,
+.B make
+is not limited to programs.  You can use it to describe any task where some
+files must be updated automatically from others whenever the others change.
+.LP
+To prepare to use
+.BR make ,
+you must write a file called the
+.I makefile
+that describes the relationships among files in your program, and the states
+the commands for updating each file.  In a program, typically the executable
+file is updated from object files, which are in turn made by compiling source
+files.
+.LP
+Once a suitable makefile exists, each time you change some source files,
+this simple shell command:
+.sp 1
+.RS
+.B make
+.RE
+.sp 1
+suffices to perform all necessary recompilations.
+The
+.B make
+program uses the makefile description and the last-modification times of the
+files to decide which of the files need to be updated.  For each of those
+files, it issues the commands recorded in the makefile.
+.LP
+.B make
+executes commands in the
+.I makefile
+to update one or more target
+.IR names ,
+where
+.I name
+is typically a program.
+If no
+.B \-f
+option is present,
+.B make
+will look for the makefiles
+.IR GNUmakefile ,
+.IR makefile ,
+and
+.IR Makefile ,
+in that order.
+.LP
+Normally you should call your makefile either
+.I makefile
+or
+.IR Makefile .
+(We recommend
+.I Makefile
+because it appears prominently near the beginning of a directory
+listing, right near other important files such as
+.IR  README .)
+The first name checked,
+.IR GNUmakefile ,
+is not recommended for most makefiles.  You should use this name if you have a
+makefile that is specific to GNU
+.BR make ,
+and will not be understood by other versions of
+.BR make .
+If
+.I makefile
+is '\-', the standard input is read.
+.LP
+.B make
+updates a target if it depends on prerequisite files
+that have been modified since the target was last modified,
+or if the target does not exist.
+.SH OPTIONS
+.sp 1
+.TP 0.5i
+\fB\-b\fR, \fB\-m\fR
+These options are ignored for compatibility with other versions of
+.BR make .
+.TP 0.5i
+\fB\-B\fR, \fB\-\-always\-make\fR
+Unconditionally make all targets.
+.TP 0.5i
+\fB\-C\fR \fIdir\fR, \fB\-\-directory\fR=\fIdir\fR
+Change to directory
+.I dir
+before reading the makefiles or doing anything else.
+If multiple
+.B \-C
+options are specified, each is interpreted relative to the
+previous one:
+.BR "\-C " /
+.BR "\-C " etc
+is equivalent to
+.BR "\-C " /etc.
+This is typically used with recursive invocations of
+.BR make .
+.TP 0.5i
+.B \-d
+Print debugging information in addition to normal processing.
+The debugging information says which files are being considered for
+remaking, which file-times are being compared and with what results,
+which files actually need to be remade, which implicit rules are
+considered and which are applied---everything interesting about how
+.B make
+decides what to do.
+.TP 0.5i
+.BI \-\-debug "[=FLAGS]"
+Print debugging information in addition to normal processing.
+If the
+.I FLAGS
+are omitted, then the behavior is the same as if
+.B \-d
+was specified.
+.I FLAGS
+may be
+.I a
+for all debugging output (same as using
+.BR \-d ),
+.I b
+for basic debugging,
+.I v
+for more verbose basic debugging,
+.I i
+for showing implicit rules,
+.I j
+for details on invocation of commands, and
+.I m
+for debugging while remaking makefiles.  Use
+.I n
+to disable all previous debugging flags.
+.TP 0.5i
+\fB\-e\fR, \fB\-\-environment\-overrides\fR
+Give variables taken from the environment precedence
+over variables from makefiles.
+.TP 0.5i
+\fB\-f\fR \fIfile\fR, \fB\-\-file\fR=\fIfile\fR, \fB\-\-makefile\fR=\fIFILE\fR
+Use
+.I file
+as a makefile.
+.TP 0.5i
+\fB\-i\fR, \fB\-\-ignore\-errors\fR
+Ignore all errors in commands executed to remake files.
+.TP 0.5i
+\fB\-I\fR \fIdir\fR, \fB\-\-include\-dir\fR=\fIdir\fR
+Specifies a directory
+.I dir
+to search for included makefiles.
+If several
+.B \-I
+options are used to specify several directories, the directories are
+searched in the order specified.
+Unlike the arguments to other flags of
+.BR make ,
+directories given with
+.B \-I
+flags may come directly after the flag:
+.BI \-I dir
+is allowed, as well as
+.B \-I
+.IR dir .
+This syntax is allowed for compatibility with the C
+preprocessor's
+.B \-I
+flag.
+.TP 0.5i
+\fB\-j\fR [\fIjobs\fR], \fB\-\-jobs\fR[=\fIjobs\fR]
+Specifies the number of
+.I jobs
+(commands) to run simultaneously.
+If there is more than one
+.B \-j
+option, the last one is effective.
+If the
+.B \-j
+option is given without an argument,
+.BR make
+will not limit the number of jobs that can run simultaneously.
+.TP 0.5i
+\fB\-k\fR, \fB\-\-keep\-going\fR
+Continue as much as possible after an error.
+While the target that failed, and those that depend on it, cannot
+be remade, the other dependencies of these targets can be processed
+all the same.
+.TP 0.5i
+\fB\-l\fR [\fIload\fR], \fB\-\-load\-average\fR[=\fIload\fR]
+Specifies that no new jobs (commands) should be started if there are
+others jobs running and the load average is at least
+.I load
+(a floating-point number).
+With no argument, removes a previous load limit.
+.TP 0.5i
+\fB\-L\fR, \fB\-\-check\-symlink\-times\fR
+Use the latest mtime between symlinks and target.
+.TP 0.5i
+\fB\-n\fR, \fB\-\-just\-print\fR, \fB\-\-dry\-run\fR, \fB\-\-recon\fR
+Print the commands that would be executed, but do not execute them (except in
+certain circumstances).
+.TP 0.5i
+\fB\-o\fR \fIfile\fR, \fB\-\-old\-file\fR=\fIfile\fR, \fB\-\-assume\-old\fR=\fIfile\fR
+Do not remake the file
+.I file
+even if it is older than its dependencies, and do not remake anything
+on account of changes in
+.IR file .
+Essentially the file is treated as very old and its rules are ignored.
+.TP 0.5i
+\fB\-O\fR[\fItype\fR], \fB\-\-output\-sync\fR[=\fItype\fR]
+When running multiple jobs in parallel with \fB-j\fR, ensure the output of
+each job is collected together rather than interspersed with output from
+other jobs.  If
+.I type
+is not specified or is
+.B target
+the output from the entire recipe for each target is grouped together.  If
+.I type
+is
+.B line
+the output from each command line within a recipe is grouped together.
+If
+.I type
+is
+.B recurse
+output from an entire recursive make is grouped together.  If
+.I type
+is
+.B none
+output synchronization is disabled.
+.TP 0.5i
+\fB\-p\fR, \fB\-\-print\-data\-base\fR
+Print the data base (rules and variable values) that results from
+reading the makefiles; then execute as usual or as otherwise
+specified.
+This also prints the version information given by the
+.B \-v
+switch (see below).
+To print the data base without trying to remake any files, use
+.IR "make \-p \-f/dev/null" .
+.TP 0.5i
+\fB\-q\fR, \fB\-\-question\fR
+``Question mode''.
+Do not run any commands, or print anything; just return an exit status
+that is zero if the specified targets are already up to date, nonzero
+otherwise.
+.TP 0.5i
+\fB\-r\fR, \fB\-\-no\-builtin\-rules\fR
+Eliminate use of the built\-in implicit rules.
+Also clear out the default list of suffixes for suffix rules.
+.TP 0.5i
+\fB\-R\fR, \fB\-\-no\-builtin\-variables\fR
+Don't define any built\-in variables.
+.TP 0.5i
+\fB\-s\fR, \fB\-\-silent\fR, \fB\-\-quiet\fR
+Silent operation; do not print the commands as they are executed.
+.TP 0.5i
+\fB\-S\fR, \fB\-\-no\-keep\-going\fR, \fB\-\-stop\fR
+Cancel the effect of the
+.B \-k
+option.
+This is never necessary except in a recursive
+.B make
+where
+.B \-k
+might be inherited from the top-level
+.B make
+via MAKEFLAGS or if you set
+.B \-k
+in MAKEFLAGS in your environment.
+.TP 0.5i
+\fB\-t\fR, \fB\-\-touch\fR
+Touch files (mark them up to date without really changing them)
+instead of running their commands.
+This is used to pretend that the commands were done, in order to fool
+future invocations of
+.BR make .
+.TP 0.5i
+.B \-\-trace
+Information about the disposition of each target is printed (why the target is
+being rebuilt and what commands are run to rebuild it).
+.TP 0.5i
+\fB\-v\fR, \fB\-\-version\fR
+Print the version of the
+.B make
+program plus a copyright, a list of authors and a notice that there
+is no warranty.
+.TP 0.5i
+\fB\-w\fR, \fB\-\-print\-directory\fR
+Print a message containing the working directory
+before and after other processing.
+This may be useful for tracking down errors from complicated nests of
+recursive
+.B make
+commands.
+.TP 0.5i
+.B \-\-no\-print\-directory
+Turn off
+.BR \-w ,
+even if it was turned on implicitly.
+.TP 0.5i
+\fB\-W\fR \fIfile\fR, \fB\-\-what\-if\fR=\fIfile\fR, \fB\-\-new\-file\fR=\fIfile\fR, \fB\-\-assume\-new\fR=\fIfile\fR
+Pretend that the target
+.I file
+has just been modified.
+When used with the
+.B \-n
+flag, this shows you what would happen if you were to modify that file.
+Without
+.BR \-n ,
+it is almost the same as running a
+.I touch
+command on the given file before running
+.BR make ,
+except that the modification time is changed only in the imagination of
+.BR make .
+.TP 0.5i
+.B \-\-warn\-undefined\-variables
+Warn when an undefined variable is referenced.
+.SH "EXIT STATUS"
+GNU
+.B make
+exits with a status of zero if all makefiles were successfully parsed
+and no targets that were built failed.  A status of one will be returned
+if the
+.B \-q
+flag was used and
+.B make
+determines that a target needs to be rebuilt.  A status of two will be
+returned if any errors were encountered.
+.SH "SEE ALSO"
+The full documentation for
+.B make
+is maintained as a Texinfo manual.  If the
+.B info
+and
+.B make
+programs are properly installed at your site, the command
+.IP
+.B info make
+.PP
+should give you access to the complete manual.
+.SH BUGS
+See the chapter ``Problems and Bugs'' in
+.IR "The GNU Make Manual" .
+.SH AUTHOR
+This manual page contributed by Dennis Morse of Stanford University.
+Further updates contributed by Mike Frysinger.  It has been reworked by Roland
+McGrath.  Maintained by Paul Smith.
+.SH "COPYRIGHT"
+Copyright \(co 1992-1993, 1996-2016 Free Software Foundation, Inc.
+This file is part of
+.IR "GNU make" .
+.LP
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+.LP
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+.LP
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see
+.IR http://www.gnu.org/licenses/ .
diff --git a/src/kmk/make.lnk b/src/kmk/make.lnk
new file mode 100644
index 0000000..0d983bf
--- /dev/null
+++ b/src/kmk/make.lnk
@@ -0,0 +1,5 @@
+FROM LIB:cres.o "commands.o"+"job.o"+"dir.o"+"file.o"+"misc.o"+"main.o"+"read.o"+"remake.o"+"rule.o"+"implicit.o"+"default.o"+"variable.o"+"expand.o"+"function.o"+"vpath.o"+"version.o"+"ar.o"+"arscan.o"+"signame.o"+"remote-stub.o"+"getopt.o"+"getopt1.o"+"alloca.o"+"amiga.o"+"hash.o"+"strcache.o"+"output.o"
+TO "make.new"
+LIB glob/glob.lib LIB:sc.lib LIB:amiga.lib
+QUIET
+
diff --git a/src/kmk/make_msvc_net2003.sln b/src/kmk/make_msvc_net2003.sln
new file mode 100644
index 0000000..e993896
--- /dev/null
+++ b/src/kmk/make_msvc_net2003.sln
@@ -0,0 +1,21 @@
+Microsoft Visual Studio Solution File, Format Version 8.00

+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_msvc.net2003", "make_msvc_net2003.vcproj", "{E96B5060-3240-4723-91C9-E64F1C877A04}"

+	ProjectSection(ProjectDependencies) = postProject

+	EndProjectSection

+EndProject

+Global

+	GlobalSection(SolutionConfiguration) = preSolution

+		Debug = Debug

+		Release = Release

+	EndGlobalSection

+	GlobalSection(ProjectConfiguration) = postSolution

+		{E96B5060-3240-4723-91C9-E64F1C877A04}.Debug.ActiveCfg = Debug|Win32

+		{E96B5060-3240-4723-91C9-E64F1C877A04}.Debug.Build.0 = Debug|Win32

+		{E96B5060-3240-4723-91C9-E64F1C877A04}.Release.ActiveCfg = Release|Win32

+		{E96B5060-3240-4723-91C9-E64F1C877A04}.Release.Build.0 = Release|Win32

+	EndGlobalSection

+	GlobalSection(ExtensibilityGlobals) = postSolution

+	EndGlobalSection

+	GlobalSection(ExtensibilityAddIns) = postSolution

+	EndGlobalSection

+EndGlobal

diff --git a/src/kmk/make_msvc_net2003.vcproj b/src/kmk/make_msvc_net2003.vcproj
new file mode 100644
index 0000000..bcc2e8b
--- /dev/null
+++ b/src/kmk/make_msvc_net2003.vcproj
@@ -0,0 +1,340 @@
+<?xml version="1.0" encoding="Windows-1252"?>

+<VisualStudioProject

+	ProjectType="Visual C++"

+	Version="7.10"

+	Name="make_msvc.net2003"

+	ProjectGUID="{E96B5060-3240-4723-91C9-E64F1C877A04}"

+	Keyword="Win32Proj">

+	<Platforms>

+		<Platform

+			Name="Win32"/>

+	</Platforms>

+	<Configurations>

+		<Configuration

+			Name="Debug|Win32"

+			OutputDirectory="Debug"

+			IntermediateDirectory="Debug"

+			ConfigurationType="1"

+			CharacterSet="2">

+			<Tool

+				Name="VCCLCompilerTool"

+				Optimization="0"

+				AdditionalIncludeDirectories=".;w32/include;glob"

+				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE;HAVE_CONFIG_H=1;WINDOWS32=1"

+				MinimalRebuild="TRUE"

+				BasicRuntimeChecks="3"

+				RuntimeLibrary="1"

+				ForceConformanceInForLoopScope="TRUE"

+				UsePrecompiledHeader="0"

+				WarningLevel="4"

+				SuppressStartupBanner="TRUE"

+				Detect64BitPortabilityProblems="FALSE"

+				DebugInformationFormat="4"/>

+			<Tool

+				Name="VCCustomBuildTool"/>

+			<Tool

+				Name="VCLinkerTool"

+				OutputFile="$(OutDir)/make_msvc.net2003.exe"

+				LinkIncremental="2"

+				GenerateDebugInformation="TRUE"

+				ProgramDatabaseFile="$(OutDir)/make_msvc.net2003.pdb"

+				SubSystem="1"

+				TargetMachine="1"/>

+			<Tool

+				Name="VCMIDLTool"/>

+			<Tool

+				Name="VCPostBuildEventTool"/>

+			<Tool

+				Name="VCPreBuildEventTool"

+				Description="Copying config.h.W32 to config.h"

+				CommandLine="if not exist config.h copy config.h.W32 config.h"/>

+			<Tool

+				Name="VCPreLinkEventTool"/>

+			<Tool

+				Name="VCResourceCompilerTool"/>

+			<Tool

+				Name="VCWebServiceProxyGeneratorTool"/>

+			<Tool

+				Name="VCXMLDataGeneratorTool"/>

+			<Tool

+				Name="VCWebDeploymentTool"/>

+			<Tool

+				Name="VCManagedWrapperGeneratorTool"/>

+			<Tool

+				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>

+		</Configuration>

+		<Configuration

+			Name="Release|Win32"

+			OutputDirectory="Release"

+			IntermediateDirectory="Release"

+			ConfigurationType="1"

+			CharacterSet="2">

+			<Tool

+				Name="VCCLCompilerTool"

+				AdditionalIncludeDirectories=".;w32/include;glob"

+				PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE;HAVE_CONFIG_H=1;WINDOWS32=1"

+				RuntimeLibrary="0"

+				ForceConformanceInForLoopScope="TRUE"

+				UsePrecompiledHeader="0"

+				WarningLevel="4"

+				Detect64BitPortabilityProblems="FALSE"

+				DebugInformationFormat="3"/>

+			<Tool

+				Name="VCCustomBuildTool"/>

+			<Tool

+				Name="VCLinkerTool"

+				OutputFile="$(OutDir)/make_msvc.net2003.exe"

+				LinkIncremental="1"

+				GenerateDebugInformation="TRUE"

+				SubSystem="1"

+				OptimizeReferences="2"

+				EnableCOMDATFolding="2"

+				TargetMachine="1"/>

+			<Tool

+				Name="VCMIDLTool"/>

+			<Tool

+				Name="VCPostBuildEventTool"/>

+			<Tool

+				Name="VCPreBuildEventTool"

+				Description="Copying config.h.W32 to config.h"

+				CommandLine="if not exist config.h copy config.h.W32 config.h"/>

+			<Tool

+				Name="VCPreLinkEventTool"/>

+			<Tool

+				Name="VCResourceCompilerTool"/>

+			<Tool

+				Name="VCWebServiceProxyGeneratorTool"/>

+			<Tool

+				Name="VCXMLDataGeneratorTool"/>

+			<Tool

+				Name="VCWebDeploymentTool"/>

+			<Tool

+				Name="VCManagedWrapperGeneratorTool"/>

+			<Tool

+				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>

+		</Configuration>

+	</Configurations>

+	<References>

+	</References>

+	<Files>

+		<Filter

+			Name="src"

+			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"

+			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">

+			<File

+				RelativePath=".\ar.c">

+			</File>

+			<File

+				RelativePath=".\arscan.c">

+			</File>

+			<File

+				RelativePath=".\commands.c">

+			</File>

+			<File

+				RelativePath=".\default.c">

+			</File>

+			<File

+				RelativePath=".\dir.c">

+			</File>

+			<File

+				RelativePath=".\expand.c">

+			</File>

+			<File

+				RelativePath=".\file.c">

+			</File>

+			<File

+				RelativePath=".\function.c">

+			</File>

+			<File

+				RelativePath=".\getloadavg.c">

+			</File>

+			<File

+				RelativePath=".\getopt.c">

+			</File>

+			<File

+				RelativePath=".\getopt1.c">

+			</File>

+

+			<File

+				RelativePath=".\guile.c">

+			</File>

+

+			<File

+				RelativePath=".\hash.c">

+			</File>

+			<File

+				RelativePath=".\strcache.c">

+			</File>

+			<File

+				RelativePath=".\implicit.c">

+			</File>

+			<File

+				RelativePath=".\job.c">

+			</File>

+			<File

+				RelativePath=".\load.c">

+			</File>

+			<File

+				RelativePath=".\output.c">

+			</File>

+			<File

+				RelativePath=".\main.c">

+			</File>

+			<File

+				RelativePath=".\misc.c">

+			</File>

+			<File

+				RelativePath=".\read.c">

+			</File>

+			<File

+				RelativePath=".\remake.c">

+			</File>

+			<File

+				RelativePath=".\remote-stub.c">

+			</File>

+			<File

+				RelativePath=".\rule.c">

+			</File>

+			<File

+				RelativePath=".\signame.c">

+			</File>

+			<File

+				RelativePath=".\variable.c">

+			</File>

+			<File

+				RelativePath=".\version.c">

+			</File>

+			<File

+				RelativePath=".\vpath.c">

+			</File>

+			<Filter

+				Name="w32"

+				Filter="">

+				<File

+					RelativePath=".\w32\compat\dirent.c">

+				</File>

+				<File

+					RelativePath=".\w32\compat\posixfcn.c">

+				</File>

+				<File

+					RelativePath=".\w32\subproc\misc.c">

+					<FileConfiguration

+						Name="Debug|Win32">

+						<Tool

+							Name="VCCLCompilerTool"

+							ObjectFile="$(IntDir)/$(InputName)1.obj"/>

+					</FileConfiguration>

+					<FileConfiguration

+						Name="Release|Win32">

+						<Tool

+							Name="VCCLCompilerTool"

+							ObjectFile="$(IntDir)/$(InputName)1.obj"/>

+					</FileConfiguration>

+				</File>

+				<File

+					RelativePath=".\w32\pathstuff.c">

+				</File>

+				<File

+					RelativePath=".\w32\w32os.c">

+				</File>

+				<File

+					RelativePath=".\w32\subproc\sub_proc.c">

+				</File>

+				<File

+					RelativePath=".\w32\subproc\w32err.c">

+				</File>

+			</Filter>

+			<Filter

+				Name="glob"

+				Filter="">

+				<File

+					RelativePath=".\glob\fnmatch.c">

+				</File>

+				<File

+					RelativePath=".\glob\glob.c">

+				</File>

+			</Filter>

+		</Filter>

+		<Filter

+			Name="include"

+			Filter="h;hpp;hxx;hm;inl;inc;xsd"

+			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">

+			<File

+				RelativePath=".\commands.h">

+			</File>

+			<File

+				RelativePath=".\config.h">

+			</File>

+			<File

+				RelativePath=".\debug.h">

+			</File>

+			<File

+				RelativePath=".\dep.h">

+			</File>

+			<File

+				RelativePath=".\filedef.h">

+			</File>

+			<File

+				RelativePath=".\getopt.h">

+			</File>

+			<File

+				RelativePath=".\gettext.h">

+			</File>

+			<File

+				RelativePath=".\gmk-default.h">

+			</File>

+			<File

+				RelativePath=".\hash.h">

+			</File>

+			<File

+				RelativePath=".\job.h">

+			</File>

+			<File

+				RelativePath=".\output.h">

+			</File>

+			<File

+				RelativePath=".\makeint.h">

+			</File>

+			<File

+				RelativePath=".\rule.h">

+			</File>

+			<File

+				RelativePath=".\variable.h">

+			</File>

+			<File

+				RelativePath=".\vmsdir.h">

+			</File>

+			<Filter

+				Name="w32"

+				Filter="">

+				<File

+					RelativePath=".\w32\include\dirent.h">

+				</File>

+				<File

+					RelativePath=".\w32\include\pathstuff.h">

+				</File>

+				<File

+					RelativePath=".\w32\subproc\proc.h">

+				</File>

+				<File

+					RelativePath=".\w32\include\sub_proc.h">

+				</File>

+				<File

+					RelativePath=".\w32\include\w32err.h">

+				</File>

+			</Filter>

+			<Filter

+				Name="glob"

+				Filter="">

+				<File

+					RelativePath=".\glob\fnmatch.h">

+				</File>

+				<File

+					RelativePath=".\glob\glob.h">

+				</File>

+			</Filter>

+		</Filter>

+	</Files>

+	<Globals>

+	</Globals>

+</VisualStudioProject>

diff --git a/src/kmk/makefile.com b/src/kmk/makefile.com
new file mode 100644
index 0000000..f579695
--- /dev/null
+++ b/src/kmk/makefile.com
@@ -0,0 +1,166 @@
+$!
+$! Makefile.com - builds GNU Make for VMS
+$!
+$! P1 = LIST will provide compiler listings.
+$! P2 = DEBUG will build an image with debug information
+$! P3 = WALL will enable all warning messages (some are suppressed since
+$!      one macro intentionally causes an error condition)
+$!
+$! In case of problems with the install you might contact me at
+$! zinser@decus.de (preferred) or zinser@sysdev.deutsche-boerse.com
+$
+$! hb
+$! But don't ask Martin Zinser about the lines, I added/changed.
+$! In case of an error do some cleanup
+$ on error then $ goto cleanup
+$! in case somebody set up her/his own symbol for cc
+$ set symbol/scope=(nolocal,noglobal)
+$!
+$! Just some general constants...
+$!
+$ true  = 1
+$ false = 0
+$ tmpnam = "temp_" + f$getjpi("","pid")
+$ tt = tmpnam + ".txt"
+$ tc = tmpnam + ".c"
+$!
+$! Look for the compiler used
+$!
+$ lval = ""
+$ if f$search("SYS$SYSTEM:DECC$COMPILER.EXE").eqs.""
+$  then
+$   if f$trnlnm("SYS").eqs."" then def/nolog sys sys$library:
+$   ccopt = ""
+$  else
+$   ccopt = "/decc/prefix=(all,except=(globfree,glob))"
+$   if f$trnlnm("SYS").eqs.""
+$    then
+$     if f$trnlnm("DECC$LIBRARY_INCLUDE").nes.""
+$      then
+$       define sys decc$library_include:
+$      else
+$       if f$search("SYS$COMMON:[DECC$LIB.REFERENCE]DECC$RTLDEF.DIR").nes."" -
+           then lval = "SYS$COMMON:[DECC$LIB.REFERENCE.DECC$RTLDEF],"
+$       if f$search("SYS$COMMON:[DECC$LIB.REFERENCE]SYS$STARLET_C.DIR").nes."" -
+           then lval = lval+"SYS$COMMON:[DECC$LIB.REFERENCE.SYS$STARLET_C],"
+$       lval=lval+"SYS$LIBRARY:"
+$       define sys 'lval
+$      endif
+$   endif
+$ endif
+$!
+$!
+$ if (p1 .eqs. "LIST")
+$ then
+$   ccopt = ccopt + "/list/show=(expan,inclu)"
+$ endif
+$!
+$! Should we build a debug image
+$!
+$ if (p2.eqs."DEBUG")
+$  then
+$   ccopt = ccopt + "/noopt/debug"
+$   lopt = "/debug"
+$ else
+$   lopt = ""
+$ endif
+$!
+$! Do we want to see all warnings
+$!
+$ if (p3.nes."WALL")
+$ then
+$   gosub check_cc_qual
+$ endif
+$ filelist = "alloca ar arscan commands default dir expand file function " + -
+             "guile hash implicit job load main misc read remake " + -
+             "remote-stub rule output signame variable version " + -
+             "vmsfunctions vmsify vpath vms_progname vms_exit " + -
+	     "vms_export_symbol [.glob]glob [.glob]fnmatch getopt1 " + -
+             "getopt strcache"
+$!
+$ copy config.h-vms config.h
+$ n=0
+$ open/write optf make.opt
+$ loop:
+$ cfile = f$elem(n," ",filelist)
+$ if cfile .eqs. " " then goto linkit
+$ write sys$output "Compiling ''cfile'..."
+$ call compileit 'cfile'
+$ n = n + 1
+$ goto loop
+$ linkit:
+$ close optf
+$ link/exe=make make.opt/opt'lopt
+$ goto cleanup
+$
+$ cleanup:
+$ if f$trnlnm("SYS").nes."" then $ deassign sys
+$ if f$trnlnm("OPTF").nes."" then $ close optf
+$ if f$search("make.opt").nes."" then $ del make.opt;*
+$ exit
+$!
+$!-----------------------------------------------------------------------------
+$!
+$! Check if this is a define relating to the properties of the C/C++
+$! compiler
+$!
+$CHECK_CC_QUAL:
+$ open/write tmpc 'tc
+$ ccqual = "/warn=(disable=questcompare)"
+$ write tmpc "#include <stdio.h>"
+$ write tmpc "unsigned int i = 1;"
+$ write tmpc "int main(){"
+$ write tmpc "if (i < 0){printf(""Mission impossible\n"");}}"
+$ close tmpc
+$ gosub cc_qual_check
+$ return
+$!
+$!-----------------------------------------------------------------------------
+$!
+$! Check for properties of C/C++ compiler
+$!
+$CC_QUAL_CHECK:
+$ cc_qual = false
+$ set message/nofac/noident/nosever/notext
+$ cc 'ccqual' 'tmpnam'
+$ if $status then cc_qual = true
+$ set message/fac/ident/sever/text
+$ delete/nolog 'tmpnam'.*;*
+$ if cc_qual then ccopt = ccopt + ccqual
+$ return
+$!-----------------------------------------------------------------------------
+$!
+$ compileit : subroutine
+$ ploc = f$locate("]",p1)
+$! filnam = p1
+$ if ploc .lt. f$length(p1)
+$ then
+$   objdir = f$extract(0, ploc+1, p1)
+$   write optf p1
+$ else
+$   objdir := []
+$   write optf objdir+p1
+$ endif
+$ cc'ccopt'/nested=none/include=([],[.glob])/obj='objdir' -
+  /define=("allocated_variable_expand_for_file=alloc_var_expand_for_file",-
+  "unlink=remove","HAVE_CONFIG_H","VMS") -
+  'p1'
+$ exit
+$ endsubroutine : compileit
+$!
+$!-----------------------------------------------------------------------------
+$!Copyright (C) 1996-2016 Free Software Foundation, Inc.
+$!This file is part of GNU Make.
+$!
+$!GNU Make is free software; you can redistribute it and/or modify it under
+$!the terms of the GNU General Public License as published by the Free Software
+$!Foundation; either version 3 of the License, or (at your option) any later
+$!version.
+$!
+$!GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+$!WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+$!FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+$!details.
+$!
+$!You should have received a copy of the GNU General Public License along with
+$!this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/makefile.vms b/src/kmk/makefile.vms
new file mode 100644
index 0000000..37702d5
--- /dev/null
+++ b/src/kmk/makefile.vms
@@ -0,0 +1,180 @@
+# -*-Makefile-*- to build GNU make on VMS
+#
+# Copyright (C) 1996-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# VMS extensions from GNU Make 3.60 imported by
+#  Klaus Kämpf (kkaempf@rmi.de)
+# Modified for version 3.78.1 by Hartmut.Becker@compaq.com.
+# Modified for version 3.80 by zinser@decus.de
+# Modified for versions 3.81, 3.99.90 by Hartmut Becker
+
+CC = cc
+CP = copy
+
+%.obj: %.c
+	$(CC) $(CFLAGS)/obj=$@ $<
+#
+#	Makefile for GNU Make
+#
+
+ifeq ($(CC),cc)
+cinclude = /nested=none/include=([],[.glob])
+cprefix = /prefix=(all,except=(glob,globfree))
+cwarn = /standard=relaxed/warn=(disable=questcompare)
+CFLAGS = $(defines) $(cinclude)$(cprefix)$(cwarn)
+else
+CFLAGS = $(defines) $(cinclude)
+endif
+#LDFLAGS = /deb
+LDFLAGS =
+
+ifeq ($(CC),cc)
+defines = /define=("unlink=remove","HAVE_CONFIG_H","VMS","allocated_variable_expand_for_file=alloc_var_expand_for_file")
+else
+ifeq ($(ARCH),VAX)
+defines = /define=("HAVE_CONFIG_H","GCC_IS_NATIVE","VAX")
+else
+defines = /define=("HAVE_CONFIG_H","GCC_IS_NATIVE")
+endif
+endif
+
+LOAD_AVG = /define="NO_LDAV"
+
+# If you don't want archive support, comment these out.
+ARCHIVES = ,ar.obj,arscan.obj
+ARCHIVES_SRC = ar.c arscan.c
+
+# If your system needs extra libraries loaded in, define them here.
+# System V probably need -lPW for alloca.
+# if on vax, uncomment the following line
+#LOADLIBES = ,c.opt/opt
+ifeq ($(CC),cc)
+#LOADLIBES =,sys$$library:vaxcrtl.olb/lib
+CRT0 =
+else
+LOADLIBES =,gnu_cc_library:libgcc.olb/lib
+endif
+
+# If your system doesn't have alloca, or the one provided is bad,
+# get it from the Emacs distribution and define these.
+#ALLOCA = ,alloca.obj
+#ALLOCASRC = alloca.c
+
+# If there are remote execution facilities defined,
+# enable them with switches here (see remote-*.c).
+REMOTE =
+
+# Any extra object files your system needs.
+extras = ,signame.obj,remote-stub.obj,vmsfunctions.obj,vmsify.obj
+#,directory.obj
+# as an alternative:
+glob = ,[.glob]glob.obj,[.glob]fnmatch.obj
+getopt = ,getopt.obj,getopt1.obj
+# Directory to install 'make' in.
+bindir = []
+# Directory to install the man page in.
+mandir = []
+# Number to put on the man page filename.
+manext = 1
+
+guile = ,guile.obj
+
+objs = commands.obj,job.obj,output.obj,dir.obj,file.obj,misc.obj,hash.obj,\
+       load.obj,main.obj,read.obj,remake.obj,rule.obj,implicit.obj,\
+       default.obj,variable.obj,expand.obj,function.obj,strcache.obj,\
+       vpath.obj,version.obj,vms_progname.obj,vms_exit.obj,\
+       vms_export_symbol.obj$(guile)$(ARCHIVES)$(extras)$(getopt)$(glob)
+
+srcs = commands.c job.c output.c dir.c file.c misc.c guile.c hash.c \
+	load.c main.c read.c remake.c rule.c implicit.c \
+	default.c variable.c expand.c function.c strcache.c \
+	vpath.c version.c vmsfunctions.c vmsify.c vms_progname.c vms_exit.c \
+	vms_export_symbol.c $(ARCHIVES_SRC) $(ALLOCASRC) \
+	commands.h dep.h filedef.h job.h output.h makeint.h rule.h variable.h
+
+
+.PHONY: all doc
+all: config.h make.exe
+
+doc: make.info make.dvi
+
+
+make.exe: $(objs)
+	$(LD)$(LDFLAGS)/exe=$@ $^$(LOADLIBES)$(CRT0)
+
+.PHONY: clean realclean
+clean:
+	-purge [...]
+	-$(RM) make.exe;,*.obj;
+	-$(RM) [.glob]*.obj;
+
+ar.obj: ar.c makeint.h config.h gnumake.h gettext.h filedef.h hash.h dep.h \
+     [.glob]fnmatch.h
+arscan.obj: arscan.c makeint.h config.h gnumake.h gettext.h
+commands.obj: commands.c makeint.h config.h gnumake.h gettext.h filedef.h \
+     hash.h dep.h variable.h job.h output.h commands.h
+default.obj: default.c makeint.h config.h gnumake.h gettext.h filedef.h \
+     hash.h variable.h rule.h dep.h job.h output.h commands.h
+dir.obj: dir.c makeint.h config.h gnumake.h gettext.h hash.h filedef.h \
+     dep.h [.glob]glob.h
+expand.obj: expand.c makeint.h config.h gnumake.h gettext.h filedef.h \
+     hash.h job.h output.h commands.h variable.h rule.h
+file.obj: file.c makeint.h config.h gnumake.h gettext.h filedef.h hash.h \
+     dep.h job.h output.h commands.h variable.h debug.h
+[.glob]fnmatch.obj: [.glob]fnmatch.c config.h [.glob]fnmatch.h
+function.obj: function.c makeint.h config.h gnumake.h gettext.h filedef.h \
+     hash.h variable.h dep.h job.h output.h commands.h debug.h
+getopt.obj: getopt.c config.h gettext.h getopt.h
+getopt1.obj: getopt1.c config.h getopt.h
+[.glob]glob.obj: [.glob]glob.c config.h [.glob]fnmatch.h [.glob]glob.h
+guile.obj: guile.c makeint.h config.h gnumake.h gettext.h
+hash.obj: hash.c makeint.h config.h gnumake.h gettext.h hash.h
+implicit.obj: implicit.c makeint.h config.h gnumake.h gettext.h filedef.h \
+     hash.h rule.h dep.h debug.h variable.h job.h output.h commands.h
+job.obj: job.c makeint.h config.h gnumake.h gettext.h job.h output.h debug.h \
+     filedef.h hash.h commands.h variable.h debug.h vmsjobs.c
+load.obj: load.c makeint.h config.h gnumake.h gettext.h
+main.obj: main.c makeint.h config.h gnumake.h gettext.h filedef.h hash.h \
+     dep.h variable.h job.h output.h commands.h rule.h debug.h getopt.h
+misc.obj: misc.c makeint.h config.h gnumake.h gettext.h filedef.h hash.h \
+     dep.h debug.h
+output.obj: output.c makeint.h config.h gnumake.h gettext.h job.h output.h
+read.obj: read.c makeint.h config.h gnumake.h gettext.h [.glob]glob.h \
+     filedef.h hash.h dep.h job.h output.h commands.h variable.h rule.h \
+     debug.h
+remake.obj: remake.c makeint.h config.h gnumake.h gettext.h filedef.h \
+     hash.h job.h output.h commands.h dep.h variable.h debug.h
+remote-stub.obj: remote-stub.c makeint.h config.h gnumake.h gettext.h \
+     filedef.h hash.h job.h output.h commands.h
+rule.obj: rule.c makeint.h config.h gnumake.h gettext.h filedef.h hash.h \
+     dep.h job.h output.h commands.h variable.h rule.h
+signame.obj: signame.c makeint.h config.h gnumake.h gettext.h
+strcache.obj: strcache.c makeint.h config.h gnumake.h gettext.h hash.h
+variable.obj: variable.c makeint.h config.h gnumake.h gettext.h filedef.h \
+     hash.h dep.h job.h output.h commands.h variable.h rule.h
+version.obj: version.c config.h
+vmsfunctions.obj: vmsfunctions.c makeint.h config.h gnumake.h gettext.h \
+     debug.h job.h output.h vmsdir.h
+vmsify.obj: vmsify.c
+vpath.obj: vpath.c makeint.h config.h gnumake.h gettext.h filedef.h hash.h \
+     variable.h
+vms_progname.obj: vms_progname.c
+vms_exit.obj: vms_exit.c
+vms_export_symbol.obj: vms_export_symbol.c
+
+config.h: config.h-vms
+	$(CP) $< $@
diff --git a/src/kmk/makeint.h b/src/kmk/makeint.h
new file mode 100644
index 0000000..9924cb9
--- /dev/null
+++ b/src/kmk/makeint.h
@@ -0,0 +1,1195 @@
+/* Miscellaneous global declarations and portability cruft for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* We use <config.h> instead of "config.h" so that a compilation
+   using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
+   (which it would do because makeint.h was found in $srcdir).  */
+#include <config.h>
+#undef  HAVE_CONFIG_H
+#define HAVE_CONFIG_H 1
+
+#include <k/kDefs.h> /* bird */
+
+/* Specify we want GNU source code.  This must be defined before any
+   system headers are included.  */
+
+#define _GNU_SOURCE 1
+
+/* AIX requires this to be the first thing in the file.  */
+#if HAVE_ALLOCA_H
+# include <alloca.h>
+#else
+# ifdef _AIX
+ #pragma alloca
+# else
+#  if !defined(__GNUC__) && !defined(WINDOWS32)
+#   ifndef alloca /* predefined by HP cc +Olibcalls */
+char *alloca ();
+#   endif
+#  endif
+# endif
+#endif
+
+/* Disable assert() unless we're a maintainer.
+   Some asserts are compute-intensive.  */
+#ifndef MAKE_MAINTAINER_MODE
+# define NDEBUG 1
+#endif
+
+/* Include the externally-visible content.
+   Be sure to use the local one, and not one installed on the system.
+   Define GMK_BUILDING_MAKE for proper selection of dllexport/dllimport
+   declarations for MS-Windows.  */
+#ifdef WINDOWS32
+# define GMK_BUILDING_MAKE
+#endif
+#include "gnumake.h"
+
+#ifdef  CRAY
+/* This must happen before #include <signal.h> so
+   that the declaration therein is changed.  */
+# define signal bsdsignal
+#endif
+
+/* If we're compiling for the dmalloc debugger, turn off string inlining.  */
+#if defined(HAVE_DMALLOC_H) && defined(__GNUC__)
+# define __NO_STRING_INLINES
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <signal.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#ifdef HAVE_SYS_TIMEB_H
+/* SCO 3.2 "devsys 4.2" has a prototype for 'ftime' in <time.h> that bombs
+   unless <sys/timeb.h> has been included first.  */
+# include <sys/timeb.h>
+#endif
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+
+#include <errno.h>
+
+#ifndef errno
+extern int errno;
+#endif
+
+#ifdef __VMS
+/* In strict ANSI mode, VMS compilers should not be defining the
+   VMS macro.  Define it here instead of a bulk edit for the correct code.
+ */
+# ifndef VMS
+#  define VMS
+# endif
+#endif
+
+#ifdef  HAVE_UNISTD_H
+# include <unistd.h>
+/* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
+   POSIX.1 behavior with 'cc -YPOSIX', which predefines POSIX itself!  */
+# if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
+#  define POSIX 1
+# endif
+#endif
+
+/* Some systems define _POSIX_VERSION but are not really POSIX.1.  */
+#if (defined (butterfly) || defined (__arm) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386)))
+# undef POSIX
+#endif
+
+#if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
+# define POSIX 1
+#endif
+
+#ifndef RETSIGTYPE
+# define RETSIGTYPE     void
+#endif
+
+#ifndef sigmask
+# define sigmask(sig)   (1 << ((sig) - 1))
+#endif
+
+#ifndef HAVE_SA_RESTART
+# define SA_RESTART 0
+#endif
+
+#ifdef HAVE_VFORK_H
+# include <vfork.h>
+#endif
+
+#ifdef  HAVE_LIMITS_H
+# include <limits.h>
+#endif
+#ifdef  HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+
+#ifndef PATH_MAX
+# ifndef POSIX
+#  define PATH_MAX      MAXPATHLEN
+# endif
+#endif
+#ifndef MAXPATHLEN
+# define MAXPATHLEN 1024
+#endif
+
+#ifdef  PATH_MAX
+# define GET_PATH_MAX   PATH_MAX
+# define PATH_VAR(var)  char var[PATH_MAX]
+#else
+# define NEED_GET_PATH_MAX 1
+# define GET_PATH_MAX   (get_path_max ())
+# define PATH_VAR(var)  char *var = alloca (GET_PATH_MAX)
+unsigned int get_path_max (void);
+#endif
+
+#if defined (KMK) || defined (CONFIG_WITH_VALUE_LENGTH) \
+ || defined (CONFIG_WITH_ALLOC_CACHES) \
+ || defined (CONFIG_WITH_STRCACHE2)
+# ifdef _MSC_VER
+#  define MY_INLINE     _inline static
+# elif defined(__GNUC__)
+#  define MY_INLINE     static __inline__
+# else
+#  define MY_INLINE     static
+# endif
+
+# ifdef __GNUC__
+#  define MY_PREDICT_TRUE(expr)  __builtin_expect(!!(expr), 1)
+#  define MY_PREDICT_FALSE(expr) __builtin_expect(!!(expr), 0)
+# else
+#  define MY_PREDICT_TRUE(expr)  (expr)
+#  define MY_PREDICT_FALSE(expr) (expr)
+# endif
+#endif
+
+#if defined (KMK) || defined (CONFIG_WITH_VALUE_LENGTH) \
+ || defined (CONFIG_WITH_STRCACHE2)
+# ifdef _MSC_VER
+#  define MY_DBGBREAK   __debugbreak()
+# elif defined(__GNUC__)
+#  if defined(__i386__) || defined(__x86_64__)
+#   define MY_DBGBREAK  __asm__ __volatile__ ("int3")
+#  else
+#   define MY_DBGBREAK  assert(0)
+#  endif
+# else
+#  define MY_DBGBREAK   assert(0)
+# endif
+# ifndef NDEBUG
+#  define MY_ASSERT_MSG(expr, printfargs) \
+    do { if (!(expr)) { printf printfargs; MY_DBGBREAK; } } while (0)
+# else
+#  define MY_ASSERT_MSG(expr, printfargs)   do { } while (0)
+# endif
+#endif
+
+#ifdef KMK
+/** @todo measure performance diff here!   */
+# if 0 /* See if this speeds things up (Windows is doing this anyway, so,
+          we might as well try be consistent in speed + features).  */
+#  define MY_IS_BLANK(ch)           ((ch) == ' ' || (ch) == '\t')
+#  define MY_IS_BLANK_OR_EOS(ch)    ((ch) == ' ' || (ch) == '\t' || (ch) == '\0')
+# else
+#  define MY_IS_BLANK(ch)           ISBLANK ((ch))
+#  define MY_IS_BLANK_OR_EOS(ch)    (ISBLANK ((ch)) || (ch) == '\0')
+# endif
+#endif
+
+#ifdef CONFIG_WITH_MAKE_STATS
+extern long make_stats_allocations;
+extern long make_stats_reallocations;
+extern unsigned long make_stats_allocated;
+extern unsigned long make_stats_ht_lookups;
+extern unsigned long make_stats_ht_collisions;
+
+# ifdef __APPLE__
+#  include <malloc/malloc.h>
+#  define SIZE_OF_HEAP_BLOCK(ptr)   malloc_size(ptr)
+
+# elif defined(__linux__) /* glibc */
+#  include <malloc.h>
+#  define SIZE_OF_HEAP_BLOCK(ptr)   malloc_usable_size(ptr)
+
+# elif defined(_MSC_VER) || defined(__OS2__)
+#  define SIZE_OF_HEAP_BLOCK(ptr)   _msize(ptr)
+
+# else
+#  include <stdlib.h>
+#  define SIZE_OF_HEAP_BLOCK(ptr)   0
+#endif
+
+# define MAKE_STATS_3(expr) do { expr; } while (0)
+# define MAKE_STATS_2(expr) do { expr; } while (0)
+# define MAKE_STATS(expr)   do { expr; } while (0)
+#else
+# define MAKE_STATS_3(expr) do { } while (0)
+# define MAKE_STATS_2(expr) do { } while (0)
+# define MAKE_STATS(expr)   do { } while (0)
+#endif
+
+/* bird - start */
+#ifdef _MSC_VER
+# include <intrin.h>
+# define CURRENT_CLOCK_TICK() __rdtsc()
+#else
+# define CURRENT_CLOCK_TICK() 0
+#endif
+
+#define COMMA ,
+#ifdef CONFIG_WITH_VALUE_LENGTH
+# define IF_WITH_VALUE_LENGTH(a_Expr)           a_Expr
+# define IF_WITH_VALUE_LENGTH_PARAM(a_Expr)     , a_Expr
+#else
+# define IF_WITH_VALUE_LENGTH(a_Expr)
+# define IF_WITH_VALUE_LENGTH_PARAM(a_Expr)
+#endif
+
+#ifdef CONFIG_WITH_ALLOC_CACHES
+# define IF_WITH_ALLOC_CACHES(a_Expr)           a_Expr
+# define IF_WITH_ALLOC_CACHES_PARAM(a_Expr)     , a_Expr
+#else
+# define IF_WITH_ALLOC_CACHES(a_Expr)
+# define IF_WITH_ALLOC_CACHES_PARAM(a_Expr)
+#endif
+
+#ifdef CONFIG_WITH_COMMANDS_FUNC
+# define IF_WITH_COMMANDS_FUNC(a_Expr)          a_Expr
+# define IF_WITH_COMMANDS_FUNC_PARAM(a_Expr)    , a_Expr
+#else
+# define IF_WITH_COMMANDS_FUNC(a_Expr)
+# define IF_WITH_COMMANDS_FUNC_PARAM(a_Expr)
+#endif
+
+/* bird - end */
+
+
+#ifndef CHAR_BIT
+# define CHAR_BIT 8
+#endif
+
+#ifndef USHRT_MAX
+# define USHRT_MAX 65535
+#endif
+
+/* Nonzero if the integer type T is signed.
+   Use <= to avoid GCC warnings about always-false expressions.  */
+#define INTEGER_TYPE_SIGNED(t) ((t) -1 <= 0)
+
+/* The minimum and maximum values for the integer type T.
+   Use ~ (t) 0, not -1, for portability to 1's complement hosts.  */
+#define INTEGER_TYPE_MINIMUM(t) \
+  (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
+#define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
+
+#ifndef CHAR_MAX
+# define CHAR_MAX INTEGER_TYPE_MAXIMUM (char)
+#endif
+
+#ifdef STAT_MACROS_BROKEN
+# ifdef S_ISREG
+#  undef S_ISREG
+# endif
+# ifdef S_ISDIR
+#  undef S_ISDIR
+# endif
+#endif  /* STAT_MACROS_BROKEN.  */
+
+#ifndef S_ISREG
+# define S_ISREG(mode)  (((mode) & S_IFMT) == S_IFREG)
+#endif
+#ifndef S_ISDIR
+# define S_ISDIR(mode)  (((mode) & S_IFMT) == S_IFDIR)
+#endif
+
+#ifdef VMS
+# include <fcntl.h>
+# include <types.h>
+# include <unixlib.h>
+# include <unixio.h>
+# include <perror.h>
+/* Needed to use alloca on VMS.  */
+# include <builtins.h>
+
+extern int vms_use_mcr_command;
+extern int vms_always_use_cmd_file;
+extern int vms_gnv_shell;
+extern int vms_comma_separator;
+extern int vms_legacy_behavior;
+extern int vms_unix_simulation;
+#endif
+
+#ifndef __attribute__
+/* This feature is available in gcc versions 2.5 and later.  */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
+#  define __attribute__(x)
+# endif
+/* The __-protected variants of 'format' and 'printf' attributes
+   are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+#  define __format__ format
+#  define __printf__ printf
+# endif
+#endif
+#define UNUSED  __attribute__ ((unused))
+
+#if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__)
+# include <stdlib.h>
+# include <string.h>
+# define ANSI_STRING 1
+#else   /* No standard headers.  */
+# ifdef HAVE_STRING_H
+#  include <string.h>
+#  define ANSI_STRING 1
+# else
+#  include <strings.h>
+# endif
+# ifdef HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# else
+void *malloc (int);
+void *realloc (void *, int);
+void free (void *);
+
+void abort (void) __attribute__ ((noreturn));
+void exit (int) __attribute__ ((noreturn));
+# endif /* HAVE_STDLIB_H.  */
+
+#endif /* Standard headers.  */
+
+/* These should be in stdlib.h.  Make sure we have them.  */
+#ifndef EXIT_SUCCESS
+# define EXIT_SUCCESS 0
+#endif
+#ifndef EXIT_FAILURE
+# define EXIT_FAILURE 1
+#endif
+
+#ifndef  ANSI_STRING
+
+/* SCO Xenix has a buggy macro definition in <string.h>.  */
+#undef  strerror
+#if !defined(__DECC)
+char *strerror (int errnum);
+#endif
+
+#endif  /* !ANSI_STRING.  */
+#undef  ANSI_STRING
+
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#if HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#define FILE_TIMESTAMP uintmax_t
+
+#if !defined(HAVE_STRSIGNAL)
+char *strsignal (int signum);
+#endif
+
+/* ISDIGIT offers the following features:
+   - Its arg may be any int or unsigned int; it need not be an unsigned char.
+   - It's guaranteed to evaluate its argument exactly once.
+      NOTE!  Make relies on this behavior, don't change it!
+   - It's typically faster.
+   POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
+   only '0' through '9' are digits.  Prefer ISDIGIT to isdigit() unless
+   it's important to use the locale's definition of 'digit' even when the
+   host does not conform to POSIX.  */
+#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
+
+/* Test if two strings are equal. Is this worthwhile?  Should be profiled.  */
+#define streq(a, b) \
+   ((a) == (b) || \
+    (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
+
+/* Test if two strings are equal, but match case-insensitively on systems
+   which have case-insensitive filesystems.  Should only be used for
+   filenames!  */
+#ifdef HAVE_CASE_INSENSITIVE_FS
+# define patheq(a, b) \
+    ((a) == (b) \
+     || (tolower((unsigned char)*(a)) == tolower((unsigned char)*(b)) \
+         && (*(a) == '\0' || !strcasecmp ((a) + 1, (b) + 1))))
+#else
+# define patheq(a, b) streq(a, b)
+#endif
+
+#define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
+
+#if (defined(__GNUC__) || defined(ENUM_BITFIELDS)) && !defined(NO_ENUM_BITFIELDS) /* bird: NO_ENUM_BITFIELDS */
+# define ENUM_BITFIELD(bits)    :bits
+#else
+# define ENUM_BITFIELD(bits)
+#endif
+
+/* Handle gettext and locales.  */
+
+#if HAVE_LOCALE_H
+# include <locale.h>
+#else
+# define setlocale(category, locale)
+#endif
+
+#include <gettext.h>
+
+#define _(msgid)            gettext (msgid)
+#define N_(msgid)           gettext_noop (msgid)
+#define S_(msg1,msg2,num)   ngettext (msg1,msg2,num)
+
+/* This is needed for getcwd() and chdir(), on some W32 systems.  */
+#if defined(HAVE_DIRECT_H)
+# include <direct.h>
+#endif
+
+#ifdef WINDOWS32
+# include <fcntl.h>
+# include <malloc.h>
+# define pipe(_p)        _pipe((_p), 512, O_BINARY)
+# ifndef CONFIG_NEW_WIN_CHILDREN /* (only used by commands.c) */
+# define kill(_pid,_sig) w32_kill((_pid),(_sig))
+# endif
+/* MSVC and Watcom C don't have ftruncate.  */
+# if defined(_MSC_VER) || defined(__WATCOMC__)
+#  define ftruncate(_fd,_len) _chsize(_fd,_len)
+# endif
+/* MinGW64 doesn't have _S_ISDIR.  */
+# ifndef _S_ISDIR
+#  define _S_ISDIR(m)  S_ISDIR(m)
+# endif
+
+void sync_Path_environment (void);
+# ifndef CONFIG_NEW_WIN_CHILDREN /* (only used by commands.c) */
+int w32_kill (pid_t pid, int sig);
+# endif
+int find_and_set_default_shell (const char *token);
+
+/* indicates whether or not we have Bourne shell */
+extern int no_default_sh_exe;
+
+/* is default_shell unixy? */
+extern int unixy_shell;
+
+/* We don't have a preferred fixed value for LOCALEDIR.  */
+# ifndef LOCALEDIR
+#  define LOCALEDIR NULL
+# endif
+
+/* Include only the minimal stuff from windows.h.   */
+# define WIN32_LEAN_AND_MEAN
+#endif  /* WINDOWS32 */
+
+#define ANY_SET(_v,_m)  (((_v)&(_m)) != 0)
+#define NONE_SET(_v,_m) (! ANY_SET ((_v),(_m)))
+
+#define MAP_NUL         0x0001
+#define MAP_BLANK       0x0002
+#define MAP_NEWLINE     0x0004
+#define MAP_COMMENT     0x0008
+#define MAP_SEMI        0x0010
+#define MAP_EQUALS      0x0020
+#define MAP_COLON       0x0040
+#define MAP_PERCENT     0x0080
+#define MAP_PIPE        0x0100
+#define MAP_DOT         0x0200
+#define MAP_COMMA       0x0400
+
+/* These are the valid characters for a user-defined function.  */
+#define MAP_USERFUNC    0x2000
+/* This means not only a '$', but skip the variable reference.  */
+#define MAP_VARIABLE    0x4000
+/* The set of characters which are directory separators is OS-specific.  */
+#define MAP_DIRSEP      0x8000
+
+#ifdef VMS
+# define MAP_VMSCOMMA   MAP_COMMA
+#else
+# define MAP_VMSCOMMA   0x0000
+#endif
+
+#define MAP_SPACE       (MAP_BLANK|MAP_NEWLINE)
+
+/* Handle other OSs.
+   To overcome an issue parsing paths in a DOS/Windows environment when
+   built in a unix based environment, override the PATH_SEPARATOR_CHAR
+   definition unless being built for Cygwin. */
+#if defined(HAVE_DOS_PATHS) && !defined(__CYGWIN__)
+# undef PATH_SEPARATOR_CHAR
+# define PATH_SEPARATOR_CHAR ';'
+# define MAP_PATHSEP    MAP_SEMI
+#elif !defined(PATH_SEPARATOR_CHAR)
+# if defined (VMS)
+#  define PATH_SEPARATOR_CHAR (vms_comma_separator ? ',' : ':')
+#  define MAP_PATHSEP    (vms_comma_separator ? MAP_COMMA : MAP_SEMI)
+# else
+#  define PATH_SEPARATOR_CHAR ':'
+#  define MAP_PATHSEP    MAP_COLON
+# endif
+#elif PATH_SEPARATOR_CHAR == ':'
+# define MAP_PATHSEP     MAP_COLON
+#elif PATH_SEPARATOR_CHAR == ';'
+# define MAP_PATHSEP     MAP_SEMI
+#elif PATH_SEPARATOR_CHAR == ','
+# define MAP_PATHSEP     MAP_COMMA
+#else
+# error "Unknown PATH_SEPARATOR_CHAR"
+#endif
+
+#define STOP_SET(_v,_m) ANY_SET(stopchar_map[(unsigned char)(_v)],(_m))
+
+#define ISBLANK(c)      STOP_SET((c),MAP_BLANK)
+#define ISSPACE(c)      STOP_SET((c),MAP_SPACE)
+#define NEXT_TOKEN(s)   while (ISSPACE (*(s))) ++(s)
+#define END_OF_TOKEN(s) while (! STOP_SET (*(s), MAP_SPACE|MAP_NUL)) ++(s)
+
+#if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT)
+# define SET_STACK_SIZE
+#endif
+#ifdef SET_STACK_SIZE
+# include <sys/resource.h>
+extern struct rlimit stack_limit;
+#endif
+
+#include "glob.h" /* bird double quotes */
+
+#define NILF ((floc *)0)
+
+#define CSTRLEN(_s)           (sizeof (_s)-1)
+#define STRING_SIZE_TUPLE(_s) (_s), CSTRLEN(_s) /* The number of bytes needed to represent the largest integer as a string.  */
+#define INTSTR_LENGTH         CSTRLEN ("18446744073709551616")
+
+#define DEFAULT_TTYNAME "true"
+#ifdef HAVE_TTYNAME
+#  define TTYNAME(_f) ttyname (_f)
+#else
+#  define TTYNAME(_f) DEFAULT_TTYNAME
+#endif
+
+
+
+/* Specify the location of elements read from makefiles.  */
+typedef struct
+  {
+    const char *filenm;
+    unsigned long lineno;
+    unsigned long offset;
+  } floc;
+
+#if defined (CONFIG_WITH_MATH) /* bird start */ \
+ || defined (CONFIG_WITH_NANOTS) \
+ || defined (CONFIG_WITH_FILE_SIZE) \
+ || defined (CONFIG_WITH_PRINT_TIME_SWITCH)
+# ifdef _MSC_VER
+typedef __int64 big_int;
+#  define BIG_INT_C(c)      (c ## LL)
+typedef unsigned __int64 big_uint;
+#  define BIG_UINT_C(c)     (c ## ULL)
+# else
+#  include <stdint.h>
+typedef int64_t big_int;
+#  define BIG_INT_C(c)      INT64_C(c)
+typedef uint64_t big_uint;
+#  define BIG_UINT_C(c)     UINT64_C(c)
+# endif
+#endif /* bird end */
+
+const char *concat (unsigned int, ...);
+void message (int prefix, size_t length, const char *fmt, ...)
+              __attribute__ ((__format__ (__printf__, 3, 4)));
+void error (const floc *flocp, size_t length, const char *fmt, ...)
+            __attribute__ ((__format__ (__printf__, 3, 4)));
+void fatal (const floc *flocp, size_t length, const char *fmt, ...)
+            __attribute__ ((noreturn, __format__ (__printf__, 3, 4)));
+
+#define O(_t,_a,_f)           _t((_a), 0, (_f))
+#define OS(_t,_a,_f,_s)       _t((_a), strlen (_s), (_f), (_s))
+#define OSS(_t,_a,_f,_s1,_s2) _t((_a), strlen (_s1) + strlen (_s2), \
+                                 (_f), (_s1), (_s2))
+#define OSSS(_t,_a,_f,_s1,_s2,_s3) _t((_a), strlen (_s1) + strlen (_s2) + strlen (_s3), \
+                                      (_f), (_s1), (_s2), (_s3))
+#define ON(_t,_a,_f,_n)       _t((_a), INTSTR_LENGTH, (_f), (_n))
+#define ONN(_t,_a,_f,_n1,_n2) _t((_a), INTSTR_LENGTH*2, (_f), (_n1), (_n2))
+
+#define OSN(_t,_a,_f,_s,_n)   _t((_a), strlen (_s) + INTSTR_LENGTH, \
+                                 (_f), (_s), (_n))
+#define ONS(_t,_a,_f,_n,_s)   _t((_a), INTSTR_LENGTH + strlen (_s), \
+                                 (_f), (_n), (_s))
+
+/* bird: more wrappers */
+#define OSNN(_t,_a,_f,_s,_n1,_n2)   _t((_a), strlen (_s) + INTSTR_LENGTH + INTSTR_LENGTH, \
+                                       (_f), (_s), (_n1), (_n2))                    /* bird */
+#define OSNS(_t,_a,_f,_s1,_n,_s2)   _t((_a), strlen (_s1) + strlen (_s2) + INTSTR_LENGTH, \
+                                      (_f), (_s1), (_n), (_s2))                     /* bird */
+#define OSSSS(_t,_a,_f,_s1,_s2,_s3,_s4) _t((_a), strlen (_s1) + strlen (_s2) + strlen (_s3) + strlen (_s4), \
+                                           (_f), (_s1), (_s2), (_s3), (_s4))        /* bird */
+#define OSSN(_t,_a,_f,_s1,_s2,_n)       _t((_a), strlen (_s1) + strlen (_s2) + INTSTR_LENGTH, \
+                                          (_f), (_s1), (_s2), (_n))                 /* bird */
+#define OSSNS(_t,_a,_f,_s1,_s2,_n,_s3) _t((_a), strlen (_s1) + strlen (_s2) + strlen (_s3) + INTSTR_LENGTH, \
+                                          (_f), (_s1), (_s2), (_n), (_s3))          /* bird */
+#define ONNS(_t,_a,_f,_n1,_n2,_s1)     _t((_a), INTSTR_LENGTH * 2 + strlen (_s1), \
+                                          (_f), (_n1), (_n2), (_s1))                /* bird */
+#define ONNNS(_t,_a,_f,_n1,_n2,_n3,_s1) _t((_a), INTSTR_LENGTH * 3 + strlen (_s1), \
+                                          (_f), (_n1), (_n2), (_n3), (_s1))         /* bird */
+
+#define OUT_OF_MEM() O (fatal, NILF, _("virtual memory exhausted"))
+
+void die (int) __attribute__ ((noreturn));
+struct output;
+void die_with_job_output (int, struct output *) __attribute__ ((noreturn));
+void pfatal_with_name (const char *) __attribute__ ((noreturn));
+void perror_with_name (const char *, const char *);
+#define xstrlen(_s) ((_s)==NULL ? 0 : strlen (_s))
+void *xmalloc (unsigned int);
+void *xcalloc (unsigned int);
+void *xrealloc (void *, unsigned int);
+char *xstrdup (const char *);
+char *xstrndup (const char *, unsigned int);
+#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
+void print_heap_stats (void);
+#endif
+char *find_next_token (const char **, unsigned int *);
+char *next_token (const char *);
+char *end_of_token (const char *);
+#ifdef KMK
+char *find_next_token_eos (const char **ptr, const char *eos, unsigned int *lengthptr);
+char *find_next_file_token (const char **ptr, const char *eos, unsigned int *lengthptr);
+#endif
+#ifndef CONFIG_WITH_VALUE_LENGTH
+void collapse_continuations (char *);
+#else
+char *collapse_continuations (char *, unsigned int);
+#endif
+#ifdef CONFIG_WITH_OPTIMIZATION_HACKS /* memchr is usually compiler intrinsic, thus faster. */
+# define lindex(s, limit, c) ((char *)memchr((s), (c), (limit) - (s)))
+#else
+char *lindex (const char *, const char *, int);
+#endif
+int alpha_compare (const void *, const void *);
+void print_spaces (unsigned int);
+char *find_percent (char *);
+const char *find_percent_cached (const char **);
+
+#ifndef NO_ARCHIVES
+int ar_name (const char *);
+void ar_parse_name (const char *, char **, char **);
+int ar_touch (const char *);
+time_t ar_member_date (const char *);
+
+typedef long int (*ar_member_func_t) (int desc, const char *mem, int truncated,
+                                      long int hdrpos, long int datapos,
+                                      long int size, long int date, int uid,
+                                      int gid, unsigned int mode,
+                                      const void *arg);
+
+long int ar_scan (const char *archive, ar_member_func_t function, const void *arg);
+int ar_name_equal (const char *name, const char *mem, int truncated);
+#ifndef VMS
+int ar_member_touch (const char *arname, const char *memname);
+#endif
+#endif
+
+int dir_file_exists_p (const char *, const char *);
+int file_exists_p (const char *);
+int file_impossible_p (const char *);
+void file_impossible (const char *);
+const char *dir_name (const char *);
+void print_dir_data_base (void);
+void dir_setup_glob (glob_t *);
+void hash_init_directories (void);
+#if defined (KMK) && defined (KBUILD_OS_WINDOWS)
+int utf16_regular_file_p(const wchar_t *pwszPath);
+#endif
+
+void define_default_variables (void);
+void undefine_default_variables (void);
+void set_default_suffixes (void);
+void install_default_suffix_rules (void);
+void install_default_implicit_rules (void);
+
+void build_vpath_lists (void);
+void construct_vpath_list (char *pattern, char *dirpath);
+const char *vpath_search (const char *file, FILE_TIMESTAMP *mtime_ptr,
+                          unsigned int* vpath_index, unsigned int* path_index);
+int gpath_search (const char *file, unsigned int len);
+
+void construct_include_path (const char **arg_dirs);
+
+void user_access (void);
+void make_access (void);
+void child_access (void);
+
+char *strip_whitespace (const char **begpp, const char **endpp);
+
+void show_goal_error (void);
+
+
+#ifdef CONFIG_WITH_ALLOC_CACHES /* bird start */
+/* alloccache (misc.c) */
+
+struct alloccache_free_ent
+{
+  struct alloccache_free_ent *next;
+};
+
+struct alloccache
+{
+  char *free_start;
+  char *free_end;
+  struct alloccache_free_ent *free_head;
+  unsigned int size;
+  unsigned int total_count;
+  unsigned long alloc_count;
+  unsigned long free_count;
+  const char *name;
+  struct alloccache *next;
+  void *grow_arg;
+  void *(*grow_alloc)(void *grow_arg, unsigned int size);
+};
+
+void alloccache_init (struct alloccache *cache, unsigned int size, const char *name,
+                      void *(*grow_alloc)(void *grow_arg, unsigned int size), void *grow_arg);
+void alloccache_term (struct alloccache *cache,
+                      void (*term_free)(void *term_arg, void *ptr, unsigned int size), void *term_arg);
+void alloccache_join (struct alloccache *cache, struct alloccache *eat);
+void alloccache_print (struct alloccache *cache);
+void alloccache_print_all (void);
+struct alloccache_free_ent *alloccache_alloc_grow (struct alloccache *cache);
+void alloccache_free (struct alloccache *cache, void *item);
+
+/* Allocate an item. */
+MY_INLINE void *
+alloccache_alloc (struct alloccache *cache)
+{
+  struct alloccache_free_ent *f;
+# ifndef CONFIG_WITH_ALLOCCACHE_DEBUG
+  f = cache->free_head;
+  if (f)
+    cache->free_head = f->next;
+  else if (cache->free_start != cache->free_end)
+    {
+      f = (struct alloccache_free_ent *)cache->free_start;
+      cache->free_start += cache->size;
+    }
+  else
+# endif
+    f = alloccache_alloc_grow (cache);
+  MAKE_STATS(cache->alloc_count++;);
+  return f;
+}
+
+/* Allocate a cleared item. */
+MY_INLINE void *
+alloccache_calloc (struct alloccache *cache)
+{
+  void *item = alloccache_alloc (cache);
+  memset (item, '\0', cache->size);
+  return item;
+}
+
+
+/* the alloc caches */
+extern struct alloccache dep_cache;
+extern struct alloccache goaldep_cache;
+extern struct alloccache nameseq_cache;
+extern struct alloccache file_cache;
+extern struct alloccache commands_cache;
+extern struct alloccache variable_cache;
+extern struct alloccache variable_set_cache;
+extern struct alloccache variable_set_list_cache;
+
+#endif /* CONFIG_WITH_ALLOC_CACHES - bird end*/
+
+
+/* String caching  */
+void strcache_init (void);
+void strcache_print_stats (const char *prefix);
+#ifndef CONFIG_WITH_STRCACHE2 /* bird */
+int strcache_iscached (const char *str);
+const char *strcache_add (const char *str);
+const char *strcache_add_len (const char *str, unsigned int len);
+#else  /* CONFIG_WITH_STRCACHE2 */
+
+# include "strcache2.h"
+extern struct strcache2 file_strcache;
+extern const char *suffixes_strcached;
+
+# define strcache_iscached(str)     strcache2_is_cached(&file_strcache, str)
+# define strcache_add(str)          strcache2_add_file(&file_strcache, str, strlen (str))
+# define strcache_add_len(str, len) strcache2_add_file(&file_strcache, str, len)
+# define strcache_get_len(str)      strcache2_get_len(&file_strcache, str) /* FIXME: replace this and related checks ... */
+
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+/* Guile support  */
+int guile_gmake_setup (const floc *flocp);
+
+/* Loadable object support.  Sets to the strcached name of the loaded file.  */
+typedef int (*load_func_t)(const floc *flocp);
+int load_file (const floc *flocp, const char **filename, int noerror);
+void unload_file (const char *name);
+
+/* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
+   because such systems often declare them in header files anyway.  */
+
+#if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
+
+long int atol ();
+# ifndef VMS
+long int lseek ();
+# endif
+
+# ifdef  HAVE_GETCWD
+#  if !defined(VMS) && !defined(__DECC) && !defined(_MSC_VER) /* bird: MSC */
+char *getcwd ();
+#  endif
+# else
+char *getwd ();
+#  define getcwd(buf, len)       getwd (buf)
+# endif
+
+#endif  /* Not GNU C library or POSIX.  */
+
+#if !HAVE_STRCASECMP
+# if HAVE_STRICMP
+#  define strcasecmp stricmp
+# elif HAVE_STRCMPI
+#  define strcasecmp strcmpi
+# else
+/* Create our own, in misc.c */
+int strcasecmp (const char *s1, const char *s2);
+# endif
+#endif
+
+#if !HAVE_STRNCASECMP
+# if HAVE_STRNICMP
+#  define strncasecmp strnicmp
+# elif HAVE_STRNCMPI
+#  define strncasecmp strncmpi
+# else
+/* Create our own, in misc.c */
+int strncasecmp (const char *s1, const char *s2, int n);
+# endif
+#endif
+
+#define OUTPUT_SYNC_NONE    0
+#define OUTPUT_SYNC_LINE    1
+#define OUTPUT_SYNC_TARGET  2
+#define OUTPUT_SYNC_RECURSE 3
+
+#if !defined(_MSC_VER) /* bird */
+/* Non-GNU systems may not declare this in unistd.h.  */
+extern char **environ;
+#endif
+
+extern const floc *reading_file;
+extern const floc **expanding_var;
+
+extern unsigned short stopchar_map[];
+
+extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
+extern int print_data_base_flag, question_flag, touch_flag, always_make_flag;
+extern int env_overrides, no_builtin_rules_flag, no_builtin_variables_flag;
+extern int print_version_flag, print_directory_flag, check_symlink_flag;
+extern int warn_undefined_variables_flag, trace_flag, posix_pedantic;
+extern int not_parallel, second_expansion, clock_skew_detected;
+extern int rebuilding_makefiles, one_shell, output_sync, verify_flag;
+
+#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION /* bird start */
+extern int second_target_expansion;
+#endif
+#ifdef CONFIG_PRETTY_COMMAND_PRINTING
+extern int pretty_command_printing;
+#endif
+#ifdef CONFIG_WITH_PRINT_TIME_SWITCH
+extern int print_time_min, print_time_width;
+#endif
+#if defined (CONFIG_WITH_MAKE_STATS) || defined (CONFIG_WITH_MINIMAL_STATS)
+extern int make_expensive_statistics;
+#endif                                  /* bird end */
+
+extern const char *default_shell;
+
+/* can we run commands via 'sh -c xxx' or must we use batch files? */
+extern int batch_mode_shell;
+
+/* Resetting the command script introduction prefix character.  */
+#define RECIPEPREFIX_NAME          ".RECIPEPREFIX"
+#define RECIPEPREFIX_DEFAULT       '\t'
+extern char cmd_prefix;
+
+extern unsigned int job_slots;
+#ifndef NO_FLOAT
+extern double max_load_average;
+#else
+extern int max_load_average;
+#endif
+
+#ifdef WINDOWS32
+extern char *program;
+#else
+extern const char *program;
+#endif
+
+#ifdef VMS
+const char *vms_command (const char *argv0);
+const char *vms_progname (const char *argv0);
+
+void vms_exit (int);
+# define _exit(foo) vms_exit(foo)
+# define exit(foo) vms_exit(foo)
+
+extern char *program_name;
+
+void
+set_program_name (const char *arv0);
+
+int
+need_vms_symbol (void);
+
+int
+create_foreign_command (const char *command, const char *image);
+
+int
+vms_export_dcl_symbol (const char *name, const char *value);
+
+int
+vms_putenv_symbol (const char *string);
+
+void
+vms_restore_symbol (const char *string);
+
+#endif
+
+void remote_setup (void);
+void remote_cleanup (void);
+int start_remote_job_p (int);
+int start_remote_job (char **, char **, int, int *, int *, int *);
+int remote_status (int *, int *, int *, int);
+void block_remote_children (void);
+void unblock_remote_children (void);
+int remote_kill (int id, int sig);
+void print_variable_data_base (void);
+void print_vpath_data_base (void);
+
+extern char *starting_directory;
+extern unsigned int makelevel;
+extern char *version_string, *remote_description, *make_host;
+
+extern unsigned int commands_started;
+
+extern int handling_fatal_signal;
+
+
+#ifndef MIN
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+#ifndef MAX
+#define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
+#endif
+
+
+#define MAKE_SUCCESS 0
+#define MAKE_TROUBLE 1
+#define MAKE_FAILURE 2
+
+/* Set up heap debugging library dmalloc.  */
+
+#ifdef HAVE_DMALLOC_H
+#include <dmalloc.h>
+#endif
+
+#ifndef initialize_main
+# ifdef __EMX__
+#  define initialize_main(pargc, pargv) \
+                          { _wildcard(pargc, pargv); _response(pargc, pargv); }
+# else
+#  define initialize_main(pargc, pargv)
+# endif
+#endif
+
+#ifdef __EMX__
+# if !defined chdir
+#  define chdir _chdir2
+# endif
+# if !defined getcwd
+#  define getcwd _getcwd2
+# endif
+
+/* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of
+   chdir() and getcwd(). This avoids some error messages for the
+   make testsuite but restricts the drive letter support. */
+# ifdef NO_CHDIR2
+#  warning NO_CHDIR2: usage of drive letters restricted
+#  undef chdir
+#  undef getcwd
+# endif
+#endif
+
+#ifndef initialize_main
+# define initialize_main(pargc, pargv)
+#endif
+
+
+/* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag
+   properly according to POSIX.  So, we try to wrap common system calls with
+   checks for EINTR.  Note that there are still plenty of system calls that
+   can fail with EINTR but this, reportedly, gets the vast majority of
+   failure cases.  If you still experience failures you'll need to either get
+   a system where SA_RESTART works, or you need to avoid -j.  */
+
+#define EINTRLOOP(_v,_c)   while (((_v)=_c)==-1 && errno==EINTR)
+
+/* While system calls that return integers are pretty consistent about
+   returning -1 on failure and setting errno in that case, functions that
+   return pointers are not always so well behaved.  Sometimes they return
+   NULL for expected behavior: one good example is readdir() which returns
+   NULL at the end of the directory--and _doesn't_ reset errno.  So, we have
+   to do it ourselves here.  */
+
+#define ENULLLOOP(_v,_c)   do { errno = 0; (_v) = _c; } \
+                           while((_v)==0 && errno==EINTR)
+
+
+#if defined(__EMX__) && defined(CONFIG_WITH_OPTIMIZATION_HACKS) /* bird: saves 40-100ms on libc. */
+static inline void *__my_rawmemchr (const void *__s, int __c);
+#undef strchr
+#define strchr(s, c) \
+  (__extension__ (__builtin_constant_p (c)				      \
+		  ? ((c) == '\0'					      \
+		     ? (char *) __my_rawmemchr ((s), (c))			      \
+		     : __my_strchr_c ((s), ((c) & 0xff) << 8))		      \
+		  : __my_strchr_g ((s), (c))))
+static inline char *__my_strchr_c (const char *__s, int __c)
+{
+  register unsigned long int __d0;
+  register char *__res;
+  __asm__ __volatile__
+    ("1:\n\t"
+     "movb	(%0),%%al\n\t"
+     "cmpb	%%ah,%%al\n\t"
+     "je	2f\n\t"
+     "leal	1(%0),%0\n\t"
+     "testb	%%al,%%al\n\t"
+     "jne	1b\n\t"
+     "xorl	%0,%0\n"
+     "2:"
+     : "=r" (__res), "=&a" (__d0)
+     : "0" (__s), "1" (__c),
+       "m" ( *(struct { char __x[0xfffffff]; } *)__s)
+     : "cc");
+  return __res;
+}
+
+static inline char *__my_strchr_g (__const char *__s, int __c)
+{
+  register unsigned long int __d0;
+  register char *__res;
+  __asm__ __volatile__
+    ("movb	%%al,%%ah\n"
+     "1:\n\t"
+     "movb	(%0),%%al\n\t"
+     "cmpb	%%ah,%%al\n\t"
+     "je	2f\n\t"
+     "leal	1(%0),%0\n\t"
+     "testb	%%al,%%al\n\t"
+     "jne	1b\n\t"
+     "xorl	%0,%0\n"
+     "2:"
+     : "=r" (__res), "=&a" (__d0)
+     : "0" (__s), "1" (__c),
+       "m" ( *(struct { char __x[0xfffffff]; } *)__s)
+     : "cc");
+  return __res;
+}
+
+static inline void *__my_rawmemchr (const void *__s, int __c)
+{
+  register unsigned long int __d0;
+  register unsigned char *__res;
+  __asm__ __volatile__
+    ("cld\n\t"
+     "repne; scasb\n\t"
+     : "=D" (__res), "=&c" (__d0)
+     : "a" (__c), "0" (__s), "1" (0xffffffff),
+       "m" ( *(struct { char __x[0xfffffff]; } *)__s)
+     : "cc");
+  return __res - 1;
+}
+
+#undef memchr
+#define memchr(a,b,c) __my_memchr((a),(b),(c))
+static inline void *__my_memchr (__const void *__s, int __c, size_t __n)
+{
+  register unsigned long int __d0;
+  register unsigned char *__res;
+  if (__n == 0)
+    return NULL;
+  __asm__ __volatile__
+    ("repne; scasb\n\t"
+     "je	1f\n\t"
+     "movl	$1,%0\n"
+     "1:"
+     : "=D" (__res), "=&c" (__d0)
+     : "a" (__c), "0" (__s), "1" (__n),
+       "m" ( *(struct { __extension__ char __x[__n]; } *)__s)
+     : "cc");
+  return __res - 1;
+}
+
+#endif /* __EMX__ (bird) */
+
+#ifdef CONFIG_WITH_IF_CONDITIONALS
+extern int expr_eval_if_conditionals(const char *line, const floc *flocp);
+extern char *expr_eval_to_string(char *o, const char *expr);
+#endif
+
+#ifdef KMK
+extern char *abspath(const char *name, char *apath);
+extern char *func_breakpoint(char *o, char **argv, const char *funcname);
+# ifdef KBUILD_OS_WINDOWS
+extern void dir_cache_invalid_after_job (void);
+extern void dir_cache_invalid_all (void);
+extern void dir_cache_invalid_all_and_close_dirs (int including_root);
+extern void dir_cache_invalid_missing (void);
+extern int dir_cache_volatile_dir (const char *dir);
+extern int dir_cache_deleted_directory(const char *pszDir);
+# endif
+#endif
+
+#if defined (CONFIG_WITH_NANOTS) || defined (CONFIG_WITH_PRINT_TIME_SWITCH) || defined(CONFIG_WITH_KMK_BUILTIN_STATS)
+/* misc.c */
+extern big_int nano_timestamp (void);
+extern int format_elapsed_nano (char *buf, size_t size, big_int ts);
+#endif
+
+#ifdef KMK
+/* main.c */
+extern mode_t g_fUMask;
+#endif
diff --git a/src/kmk/misc.c b/src/kmk/misc.c
new file mode 100644
index 0000000..dec450a
--- /dev/null
+++ b/src/kmk/misc.c
@@ -0,0 +1,1358 @@
+/* Miscellaneous generic support functions for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "dep.h"
+#include "debug.h"
+
+/* GNU make no longer supports pre-ANSI89 environments.  */
+
+#include <stdarg.h>
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#else
+# include <sys/file.h>
+#endif
+
+#if defined (CONFIG_WITH_VALUE_LENGTH) || defined (CONFIG_WITH_ALLOC_CACHES)
+# include <assert.h>
+#endif
+#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
+# ifdef __APPLE__
+#  include <malloc/malloc.h>
+# endif
+# if defined(__GLIBC__) || defined(HAVE_MALLINFO)
+#  include <malloc.h>
+# endif
+#endif
+#if defined (CONFIG_WITH_NANOTS) || defined (CONFIG_WITH_PRINT_TIME_SWITCH)
+# ifdef WINDOWS32
+#  include <Windows.h>
+# endif
+#endif
+
+/* All bcopy calls in this file can be replaced by memcpy and save a tick or two. */
+#ifdef CONFIG_WITH_OPTIMIZATION_HACKS
+# undef bcopy
+# if defined(__GNUC__) && defined(CONFIG_WITH_OPTIMIZATION_HACKS)
+#  define bcopy(src, dst, size)   __builtin_memcpy ((dst), (src), (size))
+# else
+#  define bcopy(src, dst, size)   memcpy ((dst), (src), (size))
+# endif
+#endif
+
+
+/* Compare strings *S1 and *S2.
+   Return negative if the first is less, positive if it is greater,
+   zero if they are equal.  */
+
+int
+alpha_compare (const void *v1, const void *v2)
+{
+  const char *s1 = *((char **)v1);
+  const char *s2 = *((char **)v2);
+
+  if (*s1 != *s2)
+    return *s1 - *s2;
+  return strcmp (s1, s2);
+}
+
+/* Discard each backslash-newline combination from LINE.
+   Backslash-backslash-newline combinations become backslash-newlines.
+   This is done by copying the text at LINE into itself.  */
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+void
+collapse_continuations (char *line)
+#else
+char *
+collapse_continuations (char *line, unsigned int linelen)
+#endif
+{
+  char *in, *out, *p;
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  in = strchr (line, '\n');
+  if (in == 0)
+    return;
+#else
+  assert (strlen (line) == linelen);
+  in = memchr (line, '\n', linelen);
+  if (in == 0)
+      return line + linelen;
+  if (in == line || in[-1] != '\\')
+    {
+      do
+        {
+          unsigned int off_in = in - line;
+          if (off_in == linelen)
+            return in;
+          in = memchr (in + 1, '\n', linelen - off_in - 1);
+          if (in == 0)
+            return line + linelen;
+        }
+      while (in[-1] != '\\');
+    }
+#endif
+
+  out = in;
+  while (out > line && out[-1] == '\\')
+    --out;
+
+  while (*in != '\0')
+    {
+      /* BS_WRITE gets the number of quoted backslashes at
+         the end just before IN, and BACKSLASH gets nonzero
+         if the next character is quoted.  */
+      unsigned int backslash = 0;
+      unsigned int bs_write = 0;
+      for (p = in - 1; p >= line && *p == '\\'; --p)
+        {
+          if (backslash)
+            ++bs_write;
+          backslash = !backslash;
+
+          /* It should be impossible to go back this far without exiting,
+             but if we do, we can't get the right answer.  */
+          if (in == out - 1)
+            abort ();
+        }
+
+      /* Output the appropriate number of backslashes.  */
+      while (bs_write-- > 0)
+        *out++ = '\\';
+
+      /* Skip the newline.  */
+      ++in;
+
+      if (backslash)
+        {
+          /* Backslash/newline handling:
+             In traditional GNU make all trailing whitespace, consecutive
+             backslash/newlines, and any leading non-newline whitespace on the
+             next line is reduced to a single space.
+             In POSIX, each backslash/newline and is replaced by a space.  */
+          while (ISBLANK (*in))
+            ++in;
+          if (! posix_pedantic)
+            while (out > line && ISBLANK (out[-1]))
+              --out;
+          *out++ = ' ';
+        }
+      else
+        /* If the newline isn't quoted, put it in the output.  */
+        *out++ = '\n';
+
+      /* Now copy the following line to the output.
+         Stop when we find backslashes followed by a newline.  */
+      while (*in != '\0')
+        if (*in == '\\')
+          {
+            p = in + 1;
+            while (*p == '\\')
+              ++p;
+            if (*p == '\n')
+              {
+                in = p;
+                break;
+              }
+            while (in < p)
+              *out++ = *in++;
+          }
+        else
+          *out++ = *in++;
+    }
+
+  *out = '\0';
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  assert (strchr (line, '\0') == out);
+  return out;
+#endif
+}
+
+/* Print N spaces (used in debug for target-depth).  */
+
+void
+print_spaces (unsigned int n)
+{
+  while (n-- > 0)
+    putchar (' ');
+}
+
+
+/* Return a string whose contents concatenate the NUM strings provided
+   This string lives in static, re-used memory.  */
+
+const char *
+concat (unsigned int num, ...)
+{
+  static unsigned int rlen = 0;
+  static char *result = NULL;
+  unsigned int ri = 0;
+  va_list args;
+
+  va_start (args, num);
+
+  while (num-- > 0)
+    {
+      const char *s = va_arg (args, const char *);
+      unsigned int l = xstrlen (s);
+
+      if (l == 0)
+        continue;
+
+      if (ri + l > rlen)
+        {
+          rlen = ((rlen ? rlen : 60) + l) * 2;
+          result = xrealloc (result, rlen);
+        }
+
+      memcpy (result + ri, s, l);
+      ri += l;
+    }
+
+  va_end (args);
+
+  /* Get some more memory if we don't have enough space for the
+     terminating '\0'.   */
+  if (ri == rlen)
+    {
+      rlen = (rlen ? rlen : 60) * 2;
+      result = xrealloc (result, rlen);
+    }
+
+  result[ri] = '\0';
+
+  return result;
+}
+
+
+#ifndef HAVE_STRERROR
+#undef  strerror
+char *
+strerror (int errnum)
+{
+  extern int errno, sys_nerr;
+#ifndef __DECC
+  extern char *sys_errlist[];
+#endif
+  static char buf[] = "Unknown error 12345678901234567890";
+
+  if (errno < sys_nerr)
+    return sys_errlist[errnum];
+
+  sprintf (buf, _("Unknown error %d"), errnum);
+  return buf;
+}
+#endif
+
+/* Like malloc but get fatal error if memory is exhausted.  */
+/* Don't bother if we're using dmalloc; it provides these for us.  */
+
+#if !defined(HAVE_DMALLOC_H) && !defined(ELECTRIC_HEAP) /* bird */
+
+#undef xmalloc
+#undef xcalloc
+#undef xrealloc
+#undef xstrdup
+
+void *
+xmalloc (unsigned int size)
+{
+  /* Make sure we don't allocate 0, for pre-ISO implementations.  */
+  void *result = malloc (size ? size : 1);
+  if (result == 0)
+    OUT_OF_MEM();
+
+#ifdef CONFIG_WITH_MAKE_STATS
+  make_stats_allocations++;
+  if (make_expensive_statistics)
+    make_stats_allocated += SIZE_OF_HEAP_BLOCK (result);
+  else
+    make_stats_allocated += size;
+#endif
+  return result;
+}
+
+
+void *
+xcalloc (unsigned int size)
+{
+  /* Make sure we don't allocate 0, for pre-ISO implementations.  */
+  void *result = calloc (size ? size : 1, 1);
+  if (result == 0)
+    OUT_OF_MEM();
+
+#ifdef CONFIG_WITH_MAKE_STATS
+  make_stats_allocations++;
+  if (make_expensive_statistics)
+    make_stats_allocated += SIZE_OF_HEAP_BLOCK (result);
+  else
+    make_stats_allocated += size;
+#endif
+  return result;
+}
+
+
+void *
+xrealloc (void *ptr, unsigned int size)
+{
+  void *result;
+#ifdef CONFIG_WITH_MAKE_STATS
+  if (make_expensive_statistics && ptr != NULL)
+    make_stats_allocated -= SIZE_OF_HEAP_BLOCK (ptr);
+  if (ptr)
+    make_stats_reallocations++;
+  else
+    make_stats_allocations++;
+#endif
+
+  /* Some older implementations of realloc() don't conform to ISO.  */
+  if (! size)
+    size = 1;
+  result = ptr ? realloc (ptr, size) : malloc (size);
+  if (result == 0)
+    OUT_OF_MEM();
+
+#ifdef CONFIG_WITH_MAKE_STATS
+  if (make_expensive_statistics)
+    make_stats_allocated += SIZE_OF_HEAP_BLOCK (result);
+  else
+    make_stats_allocated += size;
+#endif
+  return result;
+}
+
+
+char *
+xstrdup (const char *ptr)
+{
+  char *result;
+
+#ifdef HAVE_STRDUP
+  result = strdup (ptr);
+#else
+  result = malloc (strlen (ptr) + 1);
+#endif
+
+  if (result == 0)
+    OUT_OF_MEM();
+
+#ifdef CONFIG_WITH_MAKE_STATS
+  make_stats_allocations++;
+  if (make_expensive_statistics)
+    make_stats_allocated += SIZE_OF_HEAP_BLOCK (result);
+  else
+    make_stats_allocated += strlen (ptr) + 1;
+#endif
+#ifdef HAVE_STRDUP
+  return result;
+#else
+  return strcpy (result, ptr);
+#endif
+}
+
+#endif  /* HAVE_DMALLOC_H */
+
+char *
+xstrndup (const char *str, unsigned int length)
+{
+  char *result;
+
+#if defined(HAVE_STRNDUP) && !defined(KMK)
+  result = strndup (str, length);
+  if (result == 0)
+    OUT_OF_MEM();
+#else
+  result = xmalloc (length + 1);
+  if (length > 0)
+    strncpy (result, str, length);
+  result[length] = '\0';
+#endif
+
+  return result;
+}
+
+
+#ifndef CONFIG_WITH_OPTIMIZATION_HACKS /* This is really a reimplemntation of
+   memchr, only slower. It's been replaced by a macro in the header file. */
+
+/* Limited INDEX:
+   Search through the string STRING, which ends at LIMIT, for the character C.
+   Returns a pointer to the first occurrence, or nil if none is found.
+   Like INDEX except that the string searched ends where specified
+   instead of at the first null.  */
+
+char *
+lindex (const char *s, const char *limit, int c)
+{
+  while (s < limit)
+    if (*s++ == c)
+      return (char *)(s - 1);
+
+  return 0;
+}
+#endif /* CONFIG_WITH_OPTIMIZATION_HACKS */
+
+/* Return the address of the first whitespace or null in the string S.  */
+
+char *
+end_of_token (const char *s)
+{
+#if 0 /* @todo def KMK */
+    for (;;)
+      {
+        unsigned char ch0, ch1, ch2, ch3;
+
+        ch0 = *s;
+        if (MY_PREDICT_FALSE(MY_IS_BLANK_OR_EOS(ch0)))
+          return (char *)s;
+        ch1 = s[1];
+        if (MY_PREDICT_FALSE(MY_IS_BLANK_OR_EOS(ch1)))
+          return (char *)s + 1;
+        ch2 = s[2];
+        if (MY_PREDICT_FALSE(MY_IS_BLANK_OR_EOS(ch2)))
+          return (char *)s + 2;
+        ch3 = s[3];
+        if (MY_PREDICT_FALSE(MY_IS_BLANK_OR_EOS(ch3)))
+          return (char *)s + 3;
+
+        s += 4;
+      }
+
+#else
+  END_OF_TOKEN (s);
+  return (char *)s;
+#endif
+}
+
+/* Return the address of the first nonwhitespace or null in the string S.  */
+
+char *
+next_token (const char *s)
+{
+#if 0 /* @todo def KMK */
+  for (;;)
+    {
+      unsigned char ch0, ch1, ch2, ch3;
+
+      ch0 = *s;
+      if (MY_PREDICT_FALSE(!MY_IS_BLANK(ch0)))
+          return (char *)s;
+      ch1 = s[1];
+      if (MY_PREDICT_TRUE(!MY_IS_BLANK(ch1)))
+        return (char *)s + 1;
+      ch2 = s[2];
+      if (MY_PREDICT_FALSE(!MY_IS_BLANK(ch2)))
+        return (char *)s + 2;
+      ch3 = s[3];
+      if (MY_PREDICT_TRUE(!MY_IS_BLANK(ch3)))
+        return (char *)s + 3;
+
+      s += 4;
+    }
+
+#else  /* !KMK */
+  NEXT_TOKEN (s);
+  return (char *)s;
+#endif /* !KMK */
+}
+
+/* Find the next token in PTR; return the address of it, and store the length
+   of the token into *LENGTHPTR if LENGTHPTR is not nil.  Set *PTR to the end
+   of the token, so this function can be called repeatedly in a loop.  */
+
+char *
+find_next_token (const char **ptr, unsigned int *lengthptr)
+{
+#ifdef KMK
+  const char *p = *ptr;
+  const char *e;
+
+  /* skip blanks */
+# if 0 /* a moderate version */
+  for (;; p++)
+    {
+      unsigned char ch = *p;
+      if (!MY_IS_BLANK(ch))
+        {
+          if (!ch)
+            return NULL;
+          break;
+        }
+    }
+
+# else  /* (too) big unroll */
+  for (;; p += 4)
+    {
+      unsigned char ch0, ch1, ch2, ch3;
+
+      ch0 = *p;
+      if (MY_PREDICT_FALSE(!MY_IS_BLANK(ch0)))
+        {
+          if (!ch0)
+            return NULL;
+          break;
+        }
+      ch1 = p[1];
+      if (MY_PREDICT_TRUE(!MY_IS_BLANK(ch1)))
+        {
+          if (!ch1)
+            return NULL;
+          p += 1;
+          break;
+        }
+      ch2 = p[2];
+      if (MY_PREDICT_FALSE(!MY_IS_BLANK(ch2)))
+        {
+          if (!ch2)
+            return NULL;
+          p += 2;
+          break;
+        }
+      ch3 = p[3];
+      if (MY_PREDICT_TRUE(!MY_IS_BLANK(ch3)))
+        {
+          if (!ch3)
+            return NULL;
+          p += 3;
+          break;
+        }
+    }
+# endif
+
+  /* skip ahead until EOS or blanks. */
+# if 0 /* a moderate version */
+  for (e = p + 1;  ; e++)
+    {
+      unsigned char ch = *e;
+      if (MY_PREDICT_FALSE(MY_IS_BLANK_OR_EOS(ch)))
+        break;
+    }
+# else  /* (too) big unroll */
+  for (e = p + 1;  ; e += 4)
+    {
+      unsigned char ch0, ch1, ch2, ch3;
+
+      ch0 = *e;
+      if (MY_PREDICT_FALSE(MY_IS_BLANK_OR_EOS(ch0)))
+        break;
+      ch1 = e[1];
+      if (MY_PREDICT_FALSE(MY_IS_BLANK_OR_EOS(ch1)))
+        {
+          e += 1;
+          break;
+        }
+      ch2 = e[2];
+      if (MY_PREDICT_FALSE(MY_IS_BLANK_OR_EOS(ch2)))
+        {
+          e += 2;
+          break;
+        }
+      ch3 = e[3];
+      if (MY_PREDICT_FALSE(MY_IS_BLANK_OR_EOS(ch3)))
+        {
+          e += 3;
+          break;
+        }
+    }
+# endif
+  *ptr = e;
+
+  if (lengthptr != 0)
+    *lengthptr = e - p;
+
+  return (char *)p;
+
+#else
+  const char *p = next_token (*ptr);
+
+  if (*p == '\0')
+    return 0;
+
+  *ptr = end_of_token (p);
+  if (lengthptr != 0)
+    *lengthptr = *ptr - p;
+
+  return (char *)p;
+#endif
+}
+
+#ifdef KMK
+/* Finds the ends of the variable expansion starting at S, stopping at EOS if
+   not found before. */
+static char *find_end_of_variable_expansion (const char *s, char const *eos)
+{
+  char const openparen  = s[1];
+  char const closeparen = openparen == '(' ? ')' : '}';
+  int levels = 0;
+
+  assert (s[0] == '$');
+  assert (s[1] == '(' || s[1] == '{');
+
+  s += 2;
+  while (s != eos)
+    {
+      unsigned char ch = *s;
+      if (ch != '\0')
+        {
+          if (ch != closeparen)
+            {
+              if (ch != openparen)
+                { /* likely */ }
+              else
+                levels++;
+            }
+          else if (levels <= 1)
+            break;
+          else
+            levels--;
+        }
+      else
+        break;
+      s++;
+    }
+
+  return (char *)s;
+}
+
+/* Same as find_next_token with two exception:
+      - The string ends at EOS or '\0'.
+      - We keep track of $() and ${}, allowing functions to be used. */
+
+char *
+find_next_token_eos (const char **ptr, const char *eos, unsigned int *lengthptr)
+{
+  const char *p = *ptr;
+  const char *e;
+
+  /* skip blanks */
+  while (p != eos)
+    {
+      unsigned char const ch = *p;
+      unsigned int const map = stopchar_map[ch] & (MAP_NUL | MAP_BLANK);
+      if (map & MAP_BLANK)
+        p++;
+      else if (!(map & MAP_NUL))
+        break;
+      else
+        return NULL;
+    }
+  if (p == eos)
+    return NULL;
+
+  /* skip ahead until EOS or blanks. */
+  e = p;
+  while (e != eos)
+    {
+      unsigned char const ch = *e;
+      unsigned int const map = stopchar_map[ch] & (MAP_NUL | MAP_BLANK | MAP_VARIABLE);
+      if (!map)
+        e++; /* likely */
+      /* Dollar can be escaped by duplication ($$) and when not, they need to
+         be skipped over. */
+      else if (map & MAP_VARIABLE)
+        {
+          e++;
+          if (&e[1] != eos)
+            {
+              unsigned ch2 = *e;
+              if (ch2 == ch)
+                e++; /* escaped */
+              else if (ch == '(' || ch == '}')
+                e = find_end_of_variable_expansion (e - 1, eos);
+            }
+          else
+            break;
+        }
+      else
+        break; /* MAP_NUL or MAP_BLANK */
+    }
+
+  *ptr = e;
+  if (lengthptr != 0)
+    *lengthptr = e - p;
+
+  return (char *)p;
+}
+
+/* Same as find_next_token_eos but takes GNU make quoting into account,
+   but without doing any unquoting like find_char_unquote & parse_file_seq. */
+
+char *
+find_next_file_token (const char **ptr, const char *eos, unsigned int *lengthptr)
+{
+  const char *p = *ptr;
+  const char *e;
+
+  /* skip blanks */
+  while (p != eos)
+    {
+      unsigned char const ch = *p;
+      unsigned int const map = stopchar_map[ch] & (MAP_NUL | MAP_BLANK);
+      if (map & MAP_BLANK)
+        p++;
+      else if (!(map & MAP_NUL))
+        break;
+      else
+        return NULL;
+    }
+  if (p == eos)
+    return NULL;
+
+  /* skip ahead until EOS or blanks. */
+  e = p;
+  while (e != eos)
+    {
+      unsigned char const ch = *e;
+      unsigned int const map = stopchar_map[ch] & (MAP_NUL | MAP_BLANK | MAP_VARIABLE);
+      if (!map)
+        e++; /* likely */
+      /* Dollar can be escaped by duplication ($$) and when not, they need to
+         be skipped over. */
+      else if (map & MAP_VARIABLE)
+        {
+          e++;
+          if (&e[1] != eos)
+            {
+              unsigned ch2 = *e;
+              if (ch2 == ch)
+                e++; /* escaped */
+              else if (ch == '(' || ch == '}')
+                e = find_end_of_variable_expansion (e - 1, eos);
+            }
+          else
+            break;
+        }
+      else if (map & MAP_NUL)
+        break;
+      /* A blank can be escaped using a backslash. */
+      else if (e[-1] != '\\')
+        break;
+      else
+        {
+          int slashes = 1;
+          while (&e[-slashes] != p && e[-slashes - 1] == '\\')
+            slashes++;
+          if (slashes & 1)
+            e++;
+          else
+            break;
+        }
+    }
+
+  *ptr = e;
+  if (lengthptr != 0)
+    *lengthptr = e - p;
+
+  return (char *)p;
+}
+
+#endif /* KMK */
+
+
+/* Copy a chain of 'struct dep'.  For 2nd expansion deps, dup the name.  */
+
+struct dep *
+copy_dep_chain (const struct dep *d)
+{
+  struct dep *firstnew = 0;
+  struct dep *lastnew = 0;
+
+  while (d != 0)
+    {
+#ifndef CONFIG_WITH_ALLOC_CACHES
+      struct dep *c = xmalloc (sizeof (struct dep));
+#else
+      struct dep *c = alloccache_alloc(&dep_cache);
+#endif
+      memcpy (c, d, sizeof (struct dep));
+
+      /** @todo KMK: Check if we need this duplication! */
+      if (c->need_2nd_expansion)
+        c->name = xstrdup (c->name);
+
+      c->next = 0;
+      if (firstnew == 0)
+        firstnew = lastnew = c;
+      else
+        lastnew = lastnew->next = c;
+
+      d = d->next;
+    }
+
+  return firstnew;
+}
+
+/* Free a chain of struct nameseq.
+   For struct dep chains use free_dep_chain.  */
+
+void
+free_ns_chain (struct nameseq *ns)
+{
+  while (ns != 0)
+    {
+      struct nameseq *t = ns;
+      ns = ns->next;
+#ifndef CONFIG_WITH_ALLOC_CACHES
+      free_ns (t);
+#else
+      alloccache_free (&nameseq_cache, t);
+#endif
+    }
+}
+
+
+#ifdef CONFIG_WITH_ALLOC_CACHES
+
+void
+free_dep_chain (struct dep *d)
+{
+  while (d != 0)
+    {
+      struct dep *tofree = d;
+      d = d->next;
+      alloccache_free (&dep_cache, tofree);
+    }
+}
+
+void
+free_goal_chain (struct goaldep *g)
+{
+  while (g != 0)
+    {
+      struct goaldep *tofree = g;
+      g = g->next;
+      alloccache_free (&dep_cache, tofree);
+    }
+}
+
+#endif /* CONFIG_WITH_ALLOC_CACHES */
+
+
+#if !HAVE_STRCASECMP && !HAVE_STRICMP && !HAVE_STRCMPI
+/* If we don't have strcasecmp() (from POSIX), or anything that can substitute
+   for it, define our own version.  */
+
+int
+strcasecmp (const char *s1, const char *s2)
+{
+  while (1)
+    {
+      int c1 = (int) *(s1++);
+      int c2 = (int) *(s2++);
+
+      if (isalpha (c1))
+        c1 = tolower (c1);
+      if (isalpha (c2))
+        c2 = tolower (c2);
+
+      if (c1 != '\0' && c1 == c2)
+        continue;
+
+      return (c1 - c2);
+    }
+}
+#endif
+
+#if !HAVE_STRNCASECMP && !HAVE_STRNICMP && !HAVE_STRNCMPI
+/* If we don't have strncasecmp() (from POSIX), or anything that can
+   substitute for it, define our own version.  */
+
+int
+strncasecmp (const char *s1, const char *s2, int n)
+{
+  while (n-- > 0)
+    {
+      int c1 = (int) *(s1++);
+      int c2 = (int) *(s2++);
+
+      if (isalpha (c1))
+        c1 = tolower (c1);
+      if (isalpha (c2))
+        c2 = tolower (c2);
+
+      if (c1 != '\0' && c1 == c2)
+        continue;
+
+      return (c1 - c2);
+    }
+
+  return 0;
+}
+#endif
+
+#ifdef  GETLOADAVG_PRIVILEGED
+
+#ifdef POSIX
+
+/* Hopefully if a system says it's POSIX.1 and has the setuid and setgid
+   functions, they work as POSIX.1 says.  Some systems (Alpha OSF/1 1.2,
+   for example) which claim to be POSIX.1 also have the BSD setreuid and
+   setregid functions, but they don't work as in BSD and only the POSIX.1
+   way works.  */
+
+#undef HAVE_SETREUID
+#undef HAVE_SETREGID
+
+#else   /* Not POSIX.  */
+
+/* Some POSIX.1 systems have the seteuid and setegid functions.  In a
+   POSIX-like system, they are the best thing to use.  However, some
+   non-POSIX systems have them too but they do not work in the POSIX style
+   and we must use setreuid and setregid instead.  */
+
+#undef HAVE_SETEUID
+#undef HAVE_SETEGID
+
+#endif  /* POSIX.  */
+
+#ifndef HAVE_UNISTD_H
+extern int getuid (), getgid (), geteuid (), getegid ();
+extern int setuid (), setgid ();
+#ifdef HAVE_SETEUID
+extern int seteuid ();
+#else
+#ifdef  HAVE_SETREUID
+extern int setreuid ();
+#endif  /* Have setreuid.  */
+#endif  /* Have seteuid.  */
+#ifdef HAVE_SETEGID
+extern int setegid ();
+#else
+#ifdef  HAVE_SETREGID
+extern int setregid ();
+#endif  /* Have setregid.  */
+#endif  /* Have setegid.  */
+#endif  /* No <unistd.h>.  */
+
+/* Keep track of the user and group IDs for user- and make- access.  */
+static int user_uid = -1, user_gid = -1, make_uid = -1, make_gid = -1;
+#define access_inited   (user_uid != -1)
+static enum { make, user } current_access;
+
+
+/* Under -d, write a message describing the current IDs.  */
+
+static void
+log_access (const char *flavor)
+{
+  if (! ISDB (DB_JOBS))
+    return;
+
+  /* All the other debugging messages go to stdout,
+     but we write this one to stderr because it might be
+     run in a child fork whose stdout is piped.  */
+
+  fprintf (stderr, _("%s: user %lu (real %lu), group %lu (real %lu)\n"),
+           flavor, (unsigned long) geteuid (), (unsigned long) getuid (),
+           (unsigned long) getegid (), (unsigned long) getgid ());
+  fflush (stderr);
+}
+
+
+static void
+init_access (void)
+{
+#ifndef VMS
+  user_uid = getuid ();
+  user_gid = getgid ();
+
+  make_uid = geteuid ();
+  make_gid = getegid ();
+
+  /* Do these ever fail?  */
+  if (user_uid == -1 || user_gid == -1 || make_uid == -1 || make_gid == -1)
+    pfatal_with_name ("get{e}[gu]id");
+
+  log_access (_("Initialized access"));
+
+  current_access = make;
+#endif
+}
+
+#endif  /* GETLOADAVG_PRIVILEGED */
+
+/* Give the process appropriate permissions for access to
+   user data (i.e., to stat files, or to spawn a child process).  */
+void
+user_access (void)
+{
+#ifdef  GETLOADAVG_PRIVILEGED
+
+  if (!access_inited)
+    init_access ();
+
+  if (current_access == user)
+    return;
+
+  /* We are in "make access" mode.  This means that the effective user and
+     group IDs are those of make (if it was installed setuid or setgid).
+     We now want to set the effective user and group IDs to the real IDs,
+     which are the IDs of the process that exec'd make.  */
+
+#ifdef  HAVE_SETEUID
+
+  /* Modern systems have the seteuid/setegid calls which set only the
+     effective IDs, which is ideal.  */
+
+  if (seteuid (user_uid) < 0)
+    pfatal_with_name ("user_access: seteuid");
+
+#else   /* Not HAVE_SETEUID.  */
+
+#ifndef HAVE_SETREUID
+
+  /* System V has only the setuid/setgid calls to set user/group IDs.
+     There is an effective ID, which can be set by setuid/setgid.
+     It can be set (unless you are root) only to either what it already is
+     (returned by geteuid/getegid, now in make_uid/make_gid),
+     the real ID (return by getuid/getgid, now in user_uid/user_gid),
+     or the saved set ID (what the effective ID was before this set-ID
+     executable (make) was exec'd).  */
+
+  if (setuid (user_uid) < 0)
+    pfatal_with_name ("user_access: setuid");
+
+#else   /* HAVE_SETREUID.  */
+
+  /* In 4BSD, the setreuid/setregid calls set both the real and effective IDs.
+     They may be set to themselves or each other.  So you have two alternatives
+     at any one time.  If you use setuid/setgid, the effective will be set to
+     the real, leaving only one alternative.  Using setreuid/setregid, however,
+     you can toggle between your two alternatives by swapping the values in a
+     single setreuid or setregid call.  */
+
+  if (setreuid (make_uid, user_uid) < 0)
+    pfatal_with_name ("user_access: setreuid");
+
+#endif  /* Not HAVE_SETREUID.  */
+#endif  /* HAVE_SETEUID.  */
+
+#ifdef  HAVE_SETEGID
+  if (setegid (user_gid) < 0)
+    pfatal_with_name ("user_access: setegid");
+#else
+#ifndef HAVE_SETREGID
+  if (setgid (user_gid) < 0)
+    pfatal_with_name ("user_access: setgid");
+#else
+  if (setregid (make_gid, user_gid) < 0)
+    pfatal_with_name ("user_access: setregid");
+#endif
+#endif
+
+  current_access = user;
+
+  log_access (_("User access"));
+
+#endif  /* GETLOADAVG_PRIVILEGED */
+}
+
+/* Give the process appropriate permissions for access to
+   make data (i.e., the load average).  */
+void
+make_access (void)
+{
+#ifdef  GETLOADAVG_PRIVILEGED
+
+  if (!access_inited)
+    init_access ();
+
+  if (current_access == make)
+    return;
+
+  /* See comments in user_access, above.  */
+
+#ifdef  HAVE_SETEUID
+  if (seteuid (make_uid) < 0)
+    pfatal_with_name ("make_access: seteuid");
+#else
+#ifndef HAVE_SETREUID
+  if (setuid (make_uid) < 0)
+    pfatal_with_name ("make_access: setuid");
+#else
+  if (setreuid (user_uid, make_uid) < 0)
+    pfatal_with_name ("make_access: setreuid");
+#endif
+#endif
+
+#ifdef  HAVE_SETEGID
+  if (setegid (make_gid) < 0)
+    pfatal_with_name ("make_access: setegid");
+#else
+#ifndef HAVE_SETREGID
+  if (setgid (make_gid) < 0)
+    pfatal_with_name ("make_access: setgid");
+#else
+  if (setregid (user_gid, make_gid) < 0)
+    pfatal_with_name ("make_access: setregid");
+#endif
+#endif
+
+  current_access = make;
+
+  log_access (_("Make access"));
+
+#endif  /* GETLOADAVG_PRIVILEGED */
+}
+
+/* Give the process appropriate permissions for a child process.
+   This is like user_access, but you can't get back to make_access.  */
+void
+child_access (void)
+{
+#ifdef  GETLOADAVG_PRIVILEGED
+
+  if (!access_inited)
+    abort ();
+
+  /* Set both the real and effective UID and GID to the user's.
+     They cannot be changed back to make's.  */
+
+#ifndef HAVE_SETREUID
+  if (setuid (user_uid) < 0)
+    pfatal_with_name ("child_access: setuid");
+#else
+  if (setreuid (user_uid, user_uid) < 0)
+    pfatal_with_name ("child_access: setreuid");
+#endif
+
+#ifndef HAVE_SETREGID
+  if (setgid (user_gid) < 0)
+    pfatal_with_name ("child_access: setgid");
+#else
+  if (setregid (user_gid, user_gid) < 0)
+    pfatal_with_name ("child_access: setregid");
+#endif
+
+  log_access (_("Child access"));
+
+#endif  /* GETLOADAVG_PRIVILEGED */
+}
+
+#ifdef NEED_GET_PATH_MAX
+unsigned int
+get_path_max (void)
+{
+  static unsigned int value;
+
+  if (value == 0)
+    {
+      long int x = pathconf ("/", _PC_PATH_MAX);
+      if (x > 0)
+        value = x;
+      else
+        return MAXPATHLEN;
+    }
+
+  return value;
+}
+#endif
+
+#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
+/* Print heap statistics if supported by the platform. */
+void
+print_heap_stats (void)
+{
+  /* Darwin / Mac OS X */
+# ifdef __APPLE__
+  malloc_statistics_t s;
+
+  malloc_zone_statistics (NULL, &s);
+  printf (_("\n# CRT Heap: %u bytes in use, in %u blocks, avg %u bytes/block\n"),
+          (unsigned)s.size_in_use, (unsigned)s.blocks_in_use,
+          s.blocks_in_use ? (unsigned)(s.size_in_use / s.blocks_in_use) : 0);
+  printf (_("#           %u bytes max in use (high water mark)\n"),
+          (unsigned)s.max_size_in_use);
+  printf (_("#           %u bytes reserved,  %u bytes free (estimate)\n"),
+          (unsigned)s.size_allocated,
+          (unsigned)(s.size_allocated - s.size_in_use));
+# endif /* __APPLE__ */
+
+  /* MSC / Windows  */
+# ifdef _MSC_VER
+  unsigned int blocks_used = 0;
+  unsigned int bytes_used = 0;
+  unsigned int blocks_avail = 0;
+  unsigned int bytes_avail = 0;
+  _HEAPINFO hinfo;
+
+  memset (&hinfo, '\0', sizeof (hinfo));
+  while (_heapwalk(&hinfo) == _HEAPOK)
+    {
+      if (hinfo._useflag == _USEDENTRY)
+        {
+          blocks_used++;
+          bytes_used += hinfo._size;
+        }
+      else
+        {
+          blocks_avail++;
+          bytes_avail += hinfo._size;
+        }
+    }
+
+  printf (_("\n# CRT Heap: %u bytes in use, in %u blocks, avg %u bytes/block\n"),
+          bytes_used, blocks_used, blocks_used ? bytes_used / blocks_used : 0);
+  printf (_("#           %u bytes avail, in %u blocks, avg %u bytes/block\n"),
+          bytes_avail, blocks_avail, blocks_avail ? bytes_avail / blocks_avail : 0);
+# endif /* _MSC_VER */
+
+  /* Darwin Libc sources indicates that something like this may be
+     found in GLIBC, however, it's not in any current one...  */
+# if 0 /* ??? */
+  struct mstats m;
+
+  m = mstats();
+  printf (_("\n# CRT Heap: %zu blocks / %zu bytes in use,  %zu blocks / %zu bytes free\n"),
+          m.chunks_used, m.bytes_used, m.chunks_free, m.bytes_free);
+  printf (_("#           %zu bytes reserved\n"),
+          m.bytes_total);
+# endif /* ??? */
+
+   /* XVID2/XPG mallinfo (displayed per GLIBC documentation).  */
+# if defined(__GLIBC__) || defined(HAVE_MALLINFO)
+  struct mallinfo m;
+
+  m = mallinfo();
+  printf (_("\n# CRT Heap: %d bytes in use,  %d bytes free\n"),
+          m.uordblks, m.fordblks);
+
+  printf (_("#           # free chunks=%d,  # fastbin blocks=%d\n"),
+          m.ordblks, m.smblks);
+  printf (_("#           # mapped regions=%d,  space in mapped regions=%d\n"),
+          m.hblks, m.hblkhd);
+  printf (_("#           non-mapped space allocated from system=%d\n"),
+          m.arena);
+  printf (_("#           maximum total allocated space=%d\n"),
+          m.usmblks);
+  printf (_("#           top-most releasable space=%d\n"),
+          m.keepcost);
+# endif /* __GLIBC__ || HAVE_MALLINFO */
+
+# ifdef CONFIG_WITH_MAKE_STATS
+  printf(_("#            %lu malloc calls,  %lu realloc calls\n"),
+         make_stats_allocations, make_stats_reallocations);
+  printf(_("#            %lu MBs alloc sum, not counting freed, add pinch of salt\n"), /* XXX: better wording */
+         make_stats_allocated / (1024*1024));
+# endif
+
+  /* XXX: windows */
+}
+#endif /* CONFIG_WITH_PRINT_STATS_SWITCH */
+
+#if defined(CONFIG_WITH_PRINT_TIME_SWITCH) || defined(CONFIG_WITH_KMK_BUILTIN_STATS)
+/* Get a nanosecond timestamp, from a monotonic time source if
+   possible.  Returns -1 after calling error() on failure.  */
+
+big_int
+nano_timestamp (void)
+{
+  big_int ts;
+#if defined (WINDOWS32)
+  static int s_state = -1;
+  static LARGE_INTEGER s_freq;
+
+  if (s_state == -1)
+    s_state = QueryPerformanceFrequency (&s_freq);
+  if (s_state)
+    {
+      LARGE_INTEGER pc;
+      if (!QueryPerformanceCounter (&pc))
+        {
+          s_state = 0;
+          return nano_timestamp ();
+        }
+      ts = (big_int)((long double)pc.QuadPart / (long double)s_freq.QuadPart * 1000000000);
+    }
+  else
+    {
+      /* fall back to low resolution system time. */
+      LARGE_INTEGER bigint;
+      FILETIME ft = {0,0};
+      GetSystemTimeAsFileTime (&ft);
+      bigint.u.LowPart = ft.dwLowDateTime;
+      bigint.u.HighPart = ft.dwLowDateTime;
+      ts = bigint.QuadPart * 100;
+    }
+
+#elif HAVE_GETTIMEOFDAY
+/* FIXME: Linux and others have the realtime clock_* api, detect and use it. */
+  struct timeval tv;
+  if (!gettimeofday (&tv, NULL))
+    ts = (big_int)tv.tv_sec * 1000000000
+       + tv.tv_usec * 1000;
+  else
+    {
+      O (error, NILF, _("gettimeofday failed"));
+      ts = -1;
+    }
+
+#else
+# error "PORTME"
+#endif
+
+  return ts;
+}
+
+/* Formats the elapsed time (nano seconds) in the manner easiest
+   to read, with millisecond percision for larger numbers.  */
+
+int
+format_elapsed_nano (char *buf, size_t size, big_int ts)
+{
+  unsigned sz;
+  if (ts < 1000)
+    sz = sprintf (buf, "%uns", (unsigned)ts);
+  else if (ts < 100000)
+    sz = sprintf (buf, "%u.%03uus",
+                  (unsigned)(ts / 1000),
+                  (unsigned)(ts % 1000));
+  else
+    {
+      ts /= 1000;
+      if (ts < 1000)
+        sz = sprintf (buf, "%uus", (unsigned)ts);
+      else if (ts < 100000)
+        sz = sprintf (buf, "%u.%03ums",
+                      (unsigned)(ts / 1000),
+                      (unsigned)(ts % 1000));
+      else
+        {
+          ts /= 1000;
+          if (ts < BIG_INT_C(60000))
+            sz = sprintf (buf,
+                          "%u.%03us",
+                          (unsigned)(ts / 1000),
+                          (unsigned)(ts % 1000));
+          else
+            sz = sprintf (buf,
+                          "%um%u.%03us",
+                          (unsigned)( ts / BIG_INT_C(60000)),
+                          (unsigned)((ts % BIG_INT_C(60000)) / 1000),
+                          (unsigned)((ts % BIG_INT_C(60000)) % 1000));
+        }
+    }
+  if (sz >= size)
+    ONN (fatal, NILF, _("format_elapsed_nano buffer overflow: %u written, %lu buffer"),
+         sz, (unsigned long)size);
+  return sz;
+}
+#endif /* CONFIG_WITH_PRINT_TIME_SWITCH || defined(CONFIG_WITH_KMK_BUILTIN_STATS) */
+
diff --git a/src/kmk/os.h b/src/kmk/os.h
new file mode 100644
index 0000000..c1a19e1
--- /dev/null
+++ b/src/kmk/os.h
@@ -0,0 +1,84 @@
+/* Declarations for operating system interfaces for GNU Make.
+Copyright (C) 2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* This section provides OS-specific functions to support the jobserver.  */
+
+#ifdef MAKE_JOBSERVER
+
+/* Returns 1 if the jobserver is enabled, else 0.  */
+unsigned int jobserver_enabled (void);
+
+/* Called in the master instance to set up the jobserver initially.  */
+unsigned int jobserver_setup (int job_slots);
+
+/* Called in a child instance to connect to the jobserver.  */
+unsigned int jobserver_parse_auth (const char* auth);
+
+/* Returns an allocated buffer used to pass to child instances.  */
+char *jobserver_get_auth (void);
+
+/* Clear this instance's jobserver configuration.  */
+void jobserver_clear (void);
+
+/* Recover all the jobserver tokens and return the number we got.  */
+unsigned int jobserver_acquire_all (void);
+
+/* Release a jobserver token.  If it fails and is_fatal is 1, fatal.  */
+void jobserver_release (int is_fatal);
+
+/* Notify the jobserver that a child exited.  */
+void jobserver_signal (void);
+
+/* Get ready to start a non-recursive child.  */
+void jobserver_pre_child (int);
+
+/* Complete starting a non-recursive child.  */
+void jobserver_post_child (int);
+
+/* Set up to acquire a new token.  */
+void jobserver_pre_acquire (void);
+
+/* Wait until we can acquire a jobserver token.
+   TIMEOUT is 1 if we have other jobs waiting for the load to go down;
+   in this case we won't wait forever, so we can check the load.
+   Returns 1 if we got a token, or 0 if we stopped waiting due to a child
+   exiting or a timeout.    */
+unsigned int jobserver_acquire (int timeout);
+
+#else
+
+#define jobserver_enabled()         (0)
+#define jobserver_setup(_slots)     (0)
+#define jobserver_parse_auth(_auth) (0)
+#define jobserver_get_auth()        (NULL)
+#define jobserver_clear()           (void)(0)
+#define jobserver_release(_fatal)   (void)(0)
+#define jobserver_acquire_all()     (0)
+#define jobserver_signal()          (void)(0)
+#define jobserver_pre_child(_r)     (void)(0)
+#define jobserver_post_child(_r)    (void)(0)
+#define jobserver_pre_acquire()     (void)(0)
+#define jobserver_acquire(_tmout)   (0)
+
+#endif
+
+/* Create a "bad" file descriptor for stdin when parallel jobs are run.  */
+#if !defined(VMD) && !defined(WINDOWS32) && !defined(_AMIGA) && !defined(__MSDOS__)
+int get_bad_stdin (void);
+#else
+# define get_bad_stdin() (-1)
+#endif
diff --git a/src/kmk/output.c b/src/kmk/output.c
new file mode 100644
index 0000000..e37680e
--- /dev/null
+++ b/src/kmk/output.c
@@ -0,0 +1,1392 @@
+/* Output to stdout / stderr for GNU make
+Copyright (C) 2013-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "job.h"
+
+/* GNU make no longer supports pre-ANSI89 environments.  */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#else
+# include <sys/file.h>
+#endif
+
+#ifdef WINDOWS32
+# include <windows.h>
+# include <io.h>
+# ifndef CONFIG_NEW_WIN_CHILDREN
+#  include "sub_proc.h"
+# else
+#  include "w32/winchildren.h"
+# endif
+#endif /* WINDOWS32 */
+#ifdef KBUILD_OS_WINDOWS
+# include "console.h"
+#endif
+
+struct output *output_context = NULL;
+unsigned int stdio_traced = 0;
+
+#define OUTPUT_NONE (-1)
+
+#define OUTPUT_ISSET(_out) ((_out)->out >= 0 || (_out)->err >= 0)
+
+#ifdef HAVE_FCNTL_H
+# define STREAM_OK(_s) ((fcntl (fileno (_s), F_GETFD) != -1) || (errno != EBADF))
+#else
+# define STREAM_OK(_s) 1
+#endif
+
+
+#if defined(KMK) && !defined(NO_OUTPUT_SYNC)
+/* Non-negative if we're counting output lines.
+
+   This is used by die_with_job_output to decide whether the initial build
+   error needs to be repeated because there was too much output from parallel
+   jobs between it and the actual make termination. */
+int output_metered = -1;
+
+static void meter_output_block (char const *buffer, size_t len)
+{
+  while (len > 0)
+    {
+      char *nl = (char *)memchr (buffer, '\n', len);
+      size_t linelen;
+      if (nl)
+        {
+          linelen = nl - buffer + 1;
+          output_metered++;
+        }
+      else
+          linelen = len;
+      output_metered += linelen / 132;
+
+      /* advance */
+      buffer += linelen;
+      len    -= linelen;
+    }
+}
+#endif
+
+
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+# define MEMBUF_MIN_SEG_SIZE  4096
+# define MEMBUF_MAX_SEG_SIZE  (512*1024)
+# define MEMBUF_MAX_MOVE_LEN  (  MEMBUF_MIN_SEG_SIZE \
+                               - offsetof (struct output_segment, runs) \
+                               - sizeof (struct output_run))
+# define MEMBUF_MAX_TOTAL     (  sizeof (void *) <= 4 \
+                               ? (size_t)512*1024 : (size_t)16*1024*1024 )
+
+static void *acquire_semaphore (void);
+static void  release_semaphore (void *);
+static int   log_working_directory (int);
+
+/* Is make's stdout going to the same place as stderr?
+   Also, did we already sync_init (== -1)?  */
+static int combined_output = -1;
+
+/* Helper for membuf_reset and output_reset */
+static membuf_reset (struct output *out)
+{
+  struct output_segment *seg;
+  while ((seg = out->out.head_seg))
+    {
+     out->out.head_seg = seg->next;
+     free (seg);
+    }
+  out->out.tail_seg = NULL;
+  out->out.tail_run = NULL;
+  out->out.head_run = NULL;
+  out->out.left     = 0;
+  out->out.total    = 0;
+
+  while ((seg = out->err.head_seg))
+    {
+     out->err.head_seg = seg->next;
+     free (seg);
+    }
+  out->err.tail_seg = NULL;
+  out->err.tail_run = NULL;
+  out->err.head_run = NULL;
+  out->err.left     = 0;
+  out->err.total    = 0;
+
+  out->seqno = 0;
+}
+
+/* Used by die_with_job_output to suppress output when it shouldn't be repeated. */
+void output_reset (struct output *out)
+{
+  if (out && (out->out.total || out->err.total))
+    membuf_reset (out);
+}
+
+/* Internal worker for output_dump and membuf_dump_most. */
+static void membuf_dump (struct output *out)
+{
+  if (out->out.total || out->err.total)
+    {
+      int traced = 0;
+      struct output_run *err_run;
+      struct output_run *out_run;
+      FILE *prevdst;
+
+      /* Try to acquire the semaphore.  If it fails, dump the output
+         unsynchronized; still better than silently discarding it.
+         We want to keep this lock for as little time as possible.  */
+      void *sem = acquire_semaphore ();
+# if defined (KBUILD_OS_WINDOWS) || defined (KBUILD_OS_OS2) || defined (KBUILD_OS_DOS)
+      int prev_mode_out = _setmode (fileno (stdout), _O_BINARY);
+      int prev_mode_err = _setmode (fileno (stderr), _O_BINARY);
+# endif
+
+# ifndef KMK /* this drives me bananas. */
+      /* Log the working directory for this dump.  */
+      if (print_directory_flag && output_sync != OUTPUT_SYNC_RECURSE)
+        traced = log_working_directory (1);
+# endif
+
+      /* Work the out and err sequences in parallel. */
+      out_run = out->out.head_run;
+      err_run = out->err.head_run;
+      prevdst = NULL;
+      while (err_run || out_run)
+        {
+          FILE       *dst;
+          const void *src;
+          size_t      len;
+          if (out_run && (!err_run || out_run->seqno <= err_run->seqno))
+            {
+              src = out_run + 1;
+              len = out_run->len;
+              dst = stdout;
+              out_run = out_run->next;
+            }
+          else
+            {
+              src = err_run + 1;
+              len = err_run->len;
+              dst = stderr;
+              err_run = err_run->next;
+            }
+          if (dst != prevdst)
+            fflush(prevdst);
+          prevdst = dst;
+#ifdef KMK
+          if (output_metered < 0)
+            { /* likely */ }
+          else
+            meter_output_block (src, len);
+#endif
+# if 0 /* for debugging */
+          while (len > 0)
+            {
+              const char *nl = (const char *)memchr (src, '\n', len);
+              size_t line_len = nl ? nl - (const char *)src + 1 : len;
+              char *tmp = (char *)xmalloc (1 + line_len + 1 + 1);
+              tmp[0] = '{';
+              memcpy (&tmp[1], src, line_len);
+              tmp[1 + line_len] = '}';
+#  ifdef KBUILD_OS_WINDOWS
+              maybe_con_fwrite (tmp, 1 + line_len + 1, 1, dst);
+#  else
+              fwrite (tmp, 1 + line_len + 1, 1, dst);
+#  endif
+              free (tmp);
+              src  = (const char *)src + line_len;
+              len -= line_len;
+            }
+#else
+#  ifdef KBUILD_OS_WINDOWS
+          maybe_con_fwrite (src, len, 1, dst);
+#  else
+          fwrite (src, len, 1, dst);
+#  endif
+# endif
+        }
+      if (prevdst)
+        fflush (prevdst);
+
+# ifndef KMK /* this drives me bananas. */
+      if (traced)
+        log_working_directory (0);
+# endif
+
+      /* Exit the critical section.  */
+# if defined (KBUILD_OS_WINDOWS) || defined (KBUILD_OS_OS2) || defined (KBUILD_OS_DOS)
+      _setmode (fileno (stdout), prev_mode_out);
+      _setmode (fileno (stderr), prev_mode_err);
+# endif
+      if (sem)
+        release_semaphore (sem);
+
+# ifdef KMK
+      if (!out->dont_truncate)
+        { /* likely */ }
+      else return;
+# endif
+
+      /* Free the segments and reset the state. */
+      membuf_reset (out);
+    }
+  else
+    assert (out->out.head_seg == NULL && out->err.head_seg == NULL);
+}
+
+/* Writes up to LEN bytes to the given segment.
+   Returns how much was actually written.  */
+static size_t
+membuf_write_segment (struct output_membuf *membuf, struct output_segment *seg,
+                      const char *src, size_t len, unsigned int *pseqno)
+{
+  size_t written = 0;
+  if (seg && membuf->left > 0)
+    {
+      struct output_run *run = membuf->tail_run;
+      char  *dst = (char *)(run + 1) + run->len;
+      assert ((uintptr_t)run - (uintptr_t)seg < seg->size);
+
+      /* If the sequence number didn't change, then we can append
+         to the current run without further considerations. */
+      if (run->seqno == *pseqno)
+          written = len;
+      /* If the current run does not end with a newline, don't start a new
+         run till we encounter one. */
+      else if (dst[-1] != '\n')
+        {
+          char const *srcnl = (const char *)memchr (src, '\n', len);
+          written = srcnl ? srcnl - src + 1 : len;
+        }
+      /* Try create a new empty run and append to it. */
+      else
+        {
+          size_t const offnextrun = (  (uintptr_t)dst - (uintptr_t)(seg)
+                                     + sizeof(void *) - 1)
+                                  & ~(sizeof(void *) - 1);
+          if (offnextrun > seg->size - sizeof (struct output_run) * 2)
+            return 0; /* need new segment */
+
+          run = run->next = (struct output_run *)((char *)seg + offnextrun);
+          run->next  = NULL;
+          run->seqno = ++(*pseqno);
+          run->len   = 0;
+          membuf->tail_run = run;
+          membuf->left = seg->size - (offnextrun + sizeof (*run));
+          dst = (char *)(run + 1);
+          written = len;
+        }
+
+      /* Append to the current run. */
+      if (written > membuf->left)
+        written = membuf->left;
+      memcpy (dst, src, written);
+      run->len += written;
+      membuf->left -= written;
+    }
+  return written;
+}
+
+/* Helper for membuf_write_new_segment and membuf_dump_most that figures out
+   now much data needs to be moved from the previous run in order to make it
+   end with a newline.  */
+static size_t membuf_calc_move_len (struct output_run *tail_run)
+{
+  size_t to_move = 0;
+  if (tail_run)
+    {
+      const char *data = (const char *)(tail_run + 1);
+      size_t off = tail_run->len;
+      while (off > 0 && data[off - 1] != '\n')
+        off--;
+      to_move = tail_run->len - off;
+      if (to_move  >=  MEMBUF_MAX_MOVE_LEN)
+        to_move = 0;
+    }
+  return to_move;
+}
+
+/* Allocates a new segment and writes to it.
+   This will take care to make sure the previous run terminates with
+   a newline so that we pass whole lines to fwrite when dumping. */
+static size_t
+membuf_write_new_segment (struct output_membuf *membuf, const char *src,
+                          size_t len, unsigned int *pseqno)
+{
+  struct output_run     *prev_run = membuf->tail_run;
+  struct output_segment *prev_seg = membuf->tail_seg;
+  size_t const           to_move  = membuf_calc_move_len (prev_run);
+  struct output_segment *new_seg;
+  size_t written;
+  char *dst;
+
+  /* Figure the the segment size.  We start with MEMBUF_MIN_SEG_SIZE and double
+     it each time till we reach MEMBUF_MAX_SEG_SIZE. */
+  size_t const offset_runs = offsetof (struct output_segment, runs);
+  size_t segsize = !prev_seg ? MEMBUF_MIN_SEG_SIZE
+                 : prev_seg->size >= MEMBUF_MAX_SEG_SIZE ? MEMBUF_MAX_SEG_SIZE
+                 : prev_seg->size * 2;
+  while (   segsize < to_move + len + offset_runs + sizeof (struct output_run) * 2
+         && segsize < MEMBUF_MAX_SEG_SIZE)
+    segsize *= 2;
+
+  /* Allocate the segment and link it and the first run. */
+  new_seg = (struct output_segment *)xmalloc (segsize);
+  new_seg->size = segsize;
+  new_seg->next = NULL;
+  new_seg->runs[0].next = NULL;
+  if (!prev_seg)
+    {
+      membuf->head_seg = new_seg;
+      membuf->head_run = &new_seg->runs[0];
+    }
+  else
+    {
+      prev_seg->next = new_seg;
+      prev_run->next = &new_seg->runs[0];
+    }
+  membuf->tail_seg = new_seg;
+  membuf->tail_run = &new_seg->runs[0];
+  membuf->total += segsize;
+  membuf->left = segsize - sizeof (struct output_run) - offset_runs;
+
+  /* Initialize and write data to the first run. */
+  dst = (char *)&new_seg->runs[0]; /* Try bypass gcc array size cleverness. */
+  dst += sizeof (struct output_run);
+  assert (MEMBUF_MAX_MOVE_LEN < MEMBUF_MIN_SEG_SIZE);
+  if (to_move > 0)
+    {
+      /* Move to_move bytes from the previous run in hope that we'll get a
+         newline to soon.  Afterwards call membuf_segment_write to work SRC. */
+      assert (prev_run != NULL);
+      assert (membuf->left >= to_move);
+      prev_run->len -= to_move;
+      new_seg->runs[0].len = to_move;
+      new_seg->runs[0].seqno = prev_run->seqno;
+      memcpy (dst, (const char *)(prev_run + 1) + prev_run->len, to_move);
+      membuf->left -= to_move;
+
+      written = membuf_write_segment (membuf, new_seg, src, len, pseqno);
+    }
+  else
+    {
+      /* Create a run with up to LEN from SRC. */
+      written = len;
+      if (written > membuf->left)
+        written = membuf->left;
+      new_seg->runs[0].len = written;
+      new_seg->runs[0].seqno = ++(*pseqno);
+      memcpy (dst, src, written);
+      membuf->left -= written;
+    }
+  return written;
+}
+
+/* Worker for output_write that will dump most of the output when we hit
+   MEMBUF_MAX_TOTAL on either of the two membuf structures, then free all the
+   output segments.  Incomplete lines will be held over to the next buffers
+   and copied into new segments. */
+static void
+membuf_dump_most (struct output *out)
+{
+  size_t out_to_move = membuf_calc_move_len (out->out.tail_run);
+  size_t err_to_move = membuf_calc_move_len (out->err.tail_run);
+  if (!out_to_move && !err_to_move)
+    membuf_dump (out);
+  else
+    {
+      /* Allocate a stack buffer for holding incomplete lines.  This should be
+         fine since we're only talking about max 2 * MEMBUF_MAX_MOVE_LEN.
+         The -1 on the sequence numbers, ise because membuf_write_new_segment
+         will increment them before use. */
+      unsigned int out_seqno = out_to_move ? out->out.tail_run->seqno - 1 : 0;
+      unsigned int err_seqno = err_to_move ? out->err.tail_run->seqno - 1 : 0;
+      char *tmp = alloca (out_to_move + err_to_move);
+      if (out_to_move)
+        {
+          out->out.tail_run->len -= out_to_move;
+          memcpy (tmp,
+                  (char *)(out->out.tail_run + 1) + out->out.tail_run->len,
+                  out_to_move);
+        }
+      if (err_to_move)
+        {
+          out->err.tail_run->len -= err_to_move;
+          memcpy (tmp + out_to_move,
+                  (char *)(out->err.tail_run + 1) + out->err.tail_run->len,
+                  err_to_move);
+        }
+
+      membuf_dump (out);
+
+      if (out_to_move)
+        {
+          size_t written = membuf_write_new_segment (&out->out, tmp,
+                                                     out_to_move, &out_seqno);
+          assert (written == out_to_move); (void)written;
+        }
+      if (err_to_move)
+        {
+          size_t written = membuf_write_new_segment (&out->err,
+                                                     tmp + out_to_move,
+                                                     err_to_move, &err_seqno);
+          assert (written == err_to_move); (void)written;
+        }
+    }
+}
+
+
+/* write/fwrite like function, binary mode. */
+ssize_t
+output_write_bin (struct output *out, int is_err, const char *src, size_t len)
+{
+  size_t ret = len;
+  if (!out || !out->syncout)
+    {
+      FILE *f = is_err ? stderr : stdout;
+# if defined (KBUILD_OS_WINDOWS) || defined (KBUILD_OS_OS2) || defined (KBUILD_OS_DOS)
+      /* On DOS platforms we need to disable \n -> \r\n converts that is common on
+         standard output/error.  Also optimize for console output. */
+      int saved_errno;
+      int fd = fileno (f);
+      int prev_mode = _setmode (fd, _O_BINARY);
+      maybe_con_fwrite (src, len, 1, f);
+      if (fflush (f) == EOF)
+        ret = -1;
+      saved_errno = errno;
+      _setmode (fd, prev_mode);
+      errno = saved_errno;
+# else
+      fwrite (src, len, 1, f);
+      if (fflush (f) == EOF)
+        ret = -1;
+# endif
+    }
+  else
+    {
+      struct output_membuf *membuf = is_err ? &out->err : &out->out;
+      while (len > 0)
+        {
+          size_t runlen = membuf_write_segment (membuf, membuf->tail_seg, src, len, &out->seqno);
+          if (!runlen)
+            {
+              if (membuf->total < MEMBUF_MAX_TOTAL)
+                runlen = membuf_write_new_segment (membuf, src, len, &out->seqno);
+              else
+                membuf_dump_most (out);
+            }
+          /* advance */
+          len -= runlen;
+          src += runlen;
+        }
+    }
+  return ret;
+}
+
+#endif /* CONFIG_WITH_OUTPUT_IN_MEMORY */
+
+/* write/fwrite like function, text mode. */
+ssize_t
+output_write_text (struct output *out, int is_err, const char *src, size_t len)
+{
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+# if defined (KBUILD_OS_WINDOWS) || defined (KBUILD_OS_OS2) || defined (KBUILD_OS_DOS)
+  ssize_t ret = len;
+  if (!out || !out->syncout)
+    {
+      /* ASSUME fwrite does the desired conversion. */
+      FILE *f = is_err ? stderr : stdout;
+# ifdef KBUILD_OS_WINDOWS
+      if (maybe_con_fwrite (src, len, 1, f) < 0)
+        ret = -1;
+# else
+      fwrite (src, len, 1, f);
+# endif
+      if (fflush (f) == EOF)
+        ret = -1;
+    }
+  else
+    {
+      /* Work the buffer line by line, replacing each \n with \r\n. */
+      while (len > 0)
+        {
+          const char *nl = memchr ( src, '\n', len);
+          size_t line_len = nl ? nl - src : len;
+          output_write_bin (out, is_err, src, line_len);
+          if (!nl)
+              break;
+          output_write_bin (out, is_err, "\r\n", 2);
+          len -= line_len + 1;
+          src += line_len + 1;
+        }
+    }
+  return ret;
+# else
+  return output_write_bin (out, is_err, src, len);
+# endif
+#else
+  ssize_t ret = len;
+  if (! out || ! out->syncout)
+    {
+      FILE *f = is_err ? stderr : stdout;
+# ifdef KBUILD_OS_WINDOWS
+      maybe_con_fwrite(src, len, 1, f);
+# else
+      fwrite (src, len, 1, f);
+# endif
+      fflush (f);
+    }
+  else
+    {
+      int fd = is_err ? out->err : out->out;
+      int r;
+
+      EINTRLOOP (r, lseek (fd, 0, SEEK_END));
+      while (1)
+        {
+          EINTRLOOP (r, write (fd, src, len));
+          if ((size_t)r == len || r <= 0)
+            break;
+          len -= r;
+          src += r;
+        }
+    }
+  return ret;
+#endif
+}
+
+
+
+/* Write a string to the current STDOUT or STDERR.  */
+static void
+_outputs (struct output *out, int is_err, const char *msg)
+{
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+  output_write_text (out, is_err, msg, strlen (msg));
+#else  /* !CONFIG_WITH_OUTPUT_IN_MEMORY */
+  if (! out || ! out->syncout)
+    {
+      FILE *f = is_err ? stderr : stdout;
+# ifdef KBUILD_OS_WINDOWS
+      maybe_con_fwrite(msg, strlen(msg), 1, f);
+# else
+      fputs (msg, f);
+# endif
+      fflush (f);
+    }
+  else
+    {
+      int fd = is_err ? out->err : out->out;
+      int len = strlen (msg);
+      int r;
+
+      EINTRLOOP (r, lseek (fd, 0, SEEK_END));
+      while (1)
+        {
+          EINTRLOOP (r, write (fd, msg, len));
+          if (r == len || r <= 0)
+            break;
+          len -= r;
+          msg += r;
+        }
+    }
+#endif /* !CONFIG_WITH_OUTPUT_IN_MEMORY */
+}
+
+/* Write a message indicating that we've just entered or
+   left (according to ENTERING) the current directory.  */
+
+static int
+log_working_directory (int entering)
+{
+  static char *buf = NULL;
+  static unsigned int len = 0;
+  unsigned int need;
+  const char *fmt;
+  char *p;
+
+  /* Get enough space for the longest possible output.  */
+  need = strlen (program) + INTSTR_LENGTH + 2 + 1;
+  if (starting_directory)
+    need += strlen (starting_directory);
+
+  /* Use entire sentences to give the translators a fighting chance.  */
+  if (makelevel == 0)
+    if (starting_directory == 0)
+      if (entering)
+        fmt = _("%s: Entering an unknown directory\n");
+      else
+        fmt = _("%s: Leaving an unknown directory\n");
+    else
+      if (entering)
+        fmt = _("%s: Entering directory '%s'\n");
+      else
+        fmt = _("%s: Leaving directory '%s'\n");
+  else
+    if (starting_directory == 0)
+      if (entering)
+        fmt = _("%s[%u]: Entering an unknown directory\n");
+      else
+        fmt = _("%s[%u]: Leaving an unknown directory\n");
+    else
+      if (entering)
+        fmt = _("%s[%u]: Entering directory '%s'\n");
+      else
+        fmt = _("%s[%u]: Leaving directory '%s'\n");
+
+  need += strlen (fmt);
+
+  if (need > len)
+    {
+      buf = xrealloc (buf, need);
+      len = need;
+    }
+
+  p = buf;
+  if (print_data_base_flag)
+    {
+      *(p++) = '#';
+      *(p++) = ' ';
+    }
+
+  if (makelevel == 0)
+    if (starting_directory == 0)
+      sprintf (p, fmt , program);
+    else
+      sprintf (p, fmt, program, starting_directory);
+  else if (starting_directory == 0)
+    sprintf (p, fmt, program, makelevel);
+  else
+    sprintf (p, fmt, program, makelevel, starting_directory);
+
+  _outputs (NULL, 0, buf);
+
+  return 1;
+}
+
+/* Set a file descriptor to be in O_APPEND mode.
+   If it fails, just ignore it.  */
+
+static void
+set_append_mode (int fd)
+{
+#if defined(F_GETFL) && defined(F_SETFL) && defined(O_APPEND)
+  int flags = fcntl (fd, F_GETFL, 0);
+  if (flags >= 0)
+    fcntl (fd, F_SETFL, flags | O_APPEND);
+#endif
+}
+
+
+#ifndef NO_OUTPUT_SYNC
+
+/* Semaphore for use in -j mode with output_sync. */
+static sync_handle_t sync_handle = -1;
+
+#define FD_NOT_EMPTY(_f) ((_f) != OUTPUT_NONE && lseek ((_f), 0, SEEK_END) > 0)
+
+/* Set up the sync handle.  Disables output_sync on error.  */
+static int
+sync_init (void)
+{
+  int combined_output = 0;
+
+#ifdef WINDOWS32
+# ifdef CONFIG_NEW_WIN_CHILDREN
+  if (STREAM_OK (stdout))
+    {
+      if (STREAM_OK (stderr))
+        {
+          char mtxname[256];
+          sync_handle = create_mutex (mtxname, sizeof (mtxname));
+          if (sync_handle != -1)
+            {
+              prepare_mutex_handle_string (mtxname);
+              return same_stream (stdout, stderr);
+            }
+          perror_with_name ("output-sync suppressed: ", "create_mutex");
+        }
+      else
+        perror_with_name ("output-sync suppressed: ", "stderr");
+    }
+  else
+    perror_with_name ("output-sync suppressed: ", "stdout");
+  output_sync = OUTPUT_SYNC_NONE;
+
+# else  /* !CONFIG_NEW_WIN_CHILDREN */
+  if ((!STREAM_OK (stdout) && !STREAM_OK (stderr))
+      || (sync_handle = create_mutex ()) == -1)
+    {
+      perror_with_name ("output-sync suppressed: ", "stderr");
+      output_sync = 0;
+    }
+  else
+    {
+      combined_output = same_stream (stdout, stderr);
+      prepare_mutex_handle_string (sync_handle);
+    }
+# endif /* !CONFIG_NEW_WIN_CHILDREN */
+
+#else
+  if (STREAM_OK (stdout))
+    {
+      struct stat stbuf_o, stbuf_e;
+
+      sync_handle = fileno (stdout);
+      combined_output = (fstat (fileno (stdout), &stbuf_o) == 0
+                         && fstat (fileno (stderr), &stbuf_e) == 0
+                         && stbuf_o.st_dev == stbuf_e.st_dev
+                         && stbuf_o.st_ino == stbuf_e.st_ino);
+    }
+  else if (STREAM_OK (stderr))
+    sync_handle = fileno (stderr);
+  else
+    {
+      perror_with_name ("output-sync suppressed: ", "stderr");
+      output_sync = 0;
+    }
+#endif
+
+  return combined_output;
+}
+
+#ifndef CONFIG_WITH_OUTPUT_IN_MEMORY
+/* Support routine for output_sync() */
+static void
+pump_from_tmp (int from, FILE *to)
+{
+# ifdef KMK
+  char buffer[8192];
+# else
+  static char buffer[8192];
+#endif
+
+# if defined (KBUILD_OS_WINDOWS) || defined (KBUILD_OS_OS2) || defined (KBUILD_OS_DOS)
+  int prev_mode;
+
+  /* "from" is opened by open_tmpfd, which does it in binary mode, so
+     we need the mode of "to" to match that.  */
+  prev_mode = _setmode (fileno (to), O_BINARY);
+#endif
+
+  if (lseek (from, 0, SEEK_SET) == -1)
+    perror ("lseek()");
+
+  while (1)
+    {
+      int len;
+      EINTRLOOP (len, read (from, buffer, sizeof (buffer)));
+      if (len < 0)
+        perror ("read()");
+      if (len <= 0)
+        break;
+#ifdef KMK
+      if (output_metered < 0)
+        { /* likely */ }
+      else
+        meter_output_block (buffer, len);
+#endif
+      if (fwrite (buffer, len, 1, to) < 1)
+        {
+          perror ("fwrite()");
+          break;
+        }
+      fflush (to);
+    }
+
+# if defined (KBUILD_OS_WINDOWS) || defined (KBUILD_OS_OS2) || defined (KBUILD_OS_DOS)
+  /* Switch "to" back to its original mode, so that log messages by
+     Make have the same EOL format as without --output-sync.  */
+  _setmode (fileno (to), prev_mode);
+#endif
+}
+#endif /* CONFIG_WITH_OUTPUT_IN_MEMORY */
+
+/* Obtain the lock for writing output.  */
+static void *
+acquire_semaphore (void)
+{
+  static struct flock fl;
+
+  fl.l_type = F_WRLCK;
+  fl.l_whence = SEEK_SET;
+  fl.l_start = 0;
+  fl.l_len = 1;
+  if (fcntl (sync_handle, F_SETLKW, &fl) != -1)
+    return &fl;
+#ifdef KBUILD_OS_DARWIN /* F_SETLKW isn't supported on pipes */
+  if (errno != EBADF)
+#endif  
+  perror ("fcntl()");
+  return NULL;
+}
+
+/* Release the lock for writing output.  */
+static void
+release_semaphore (void *sem)
+{
+  struct flock *flp = (struct flock *)sem;
+  flp->l_type = F_UNLCK;
+  if (fcntl (sync_handle, F_SETLKW, flp) == -1)
+    perror ("fcntl()");
+}
+
+#ifndef CONFIG_WITH_OUTPUT_IN_MEMORY
+
+/* Returns a file descriptor to a temporary file.  The file is automatically
+   closed/deleted on exit.  Don't use a FILE* stream.  */
+int
+output_tmpfd (void)
+{
+  int fd = -1;
+  FILE *tfile = tmpfile ();
+
+  if (! tfile)
+    {
+#ifdef KMK
+      if (output_context && output_context->syncout)
+        output_context->syncout = 0; /* Avoid inifinit recursion. */
+#endif
+      pfatal_with_name ("tmpfile");
+    }
+
+  /* Create a duplicate so we can close the stream.  */
+  fd = dup (fileno (tfile));
+  if (fd < 0)
+    {
+#ifdef KMK
+      if (output_context && output_context->syncout)
+        output_context->syncout = 0; /* Avoid inifinit recursion. */
+#endif
+      pfatal_with_name ("dup");
+    }
+
+  fclose (tfile);
+
+  set_append_mode (fd);
+
+  return fd;
+}
+
+/* Adds file descriptors to the child structure to support output_sync; one
+   for stdout and one for stderr as long as they are open.  If stdout and
+   stderr share a device they can share a temp file too.
+   Will reset output_sync on error.  */
+static void
+setup_tmpfile (struct output *out)
+{
+  /* Is make's stdout going to the same place as stderr?  */
+  static int combined_output = -1;
+
+  if (combined_output < 0)
+    {
+#ifdef KMK /* prevent infinite recursion if sync_init() calls perror_with_name. */
+      combined_output = 0;
+#endif
+      combined_output = sync_init ();
+    }
+
+  if (STREAM_OK (stdout))
+    {
+      int fd = output_tmpfd ();
+      if (fd < 0)
+        goto error;
+      CLOSE_ON_EXEC (fd);
+      out->out = fd;
+    }
+
+  if (STREAM_OK (stderr))
+    {
+      if (out->out != OUTPUT_NONE && combined_output)
+        out->err = out->out;
+      else
+        {
+          int fd = output_tmpfd ();
+          if (fd < 0)
+            goto error;
+          CLOSE_ON_EXEC (fd);
+          out->err = fd;
+        }
+    }
+
+  return;
+
+  /* If we failed to create a temp file, disable output sync going forward.  */
+ error:
+  output_close (out);
+  output_sync = OUTPUT_SYNC_NONE;
+}
+
+#endif /* CONFIG_WITH_OUTPUT_IN_MEMORY */
+
+/* Synchronize the output of jobs in -j mode to keep the results of
+   each job together. This is done by holding the results in temp files,
+   one for stdout and potentially another for stderr, and only releasing
+   them to "real" stdout/stderr when a semaphore can be obtained. */
+
+void
+output_dump (struct output *out)
+{
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+  membuf_dump (out);
+#else
+  int outfd_not_empty = FD_NOT_EMPTY (out->out);
+  int errfd_not_empty = FD_NOT_EMPTY (out->err);
+
+  if (outfd_not_empty || errfd_not_empty)
+    {
+# ifndef KMK /* this drives me bananas. */
+      int traced = 0;
+# endif
+
+      /* Try to acquire the semaphore.  If it fails, dump the output
+         unsynchronized; still better than silently discarding it.
+         We want to keep this lock for as little time as possible.  */
+      void *sem = acquire_semaphore ();
+
+# ifndef KMK /* this drives me bananas. */
+      /* Log the working directory for this dump.  */
+      if (print_directory_flag && output_sync != OUTPUT_SYNC_RECURSE)
+        traced = log_working_directory (1);
+# endif
+
+      if (outfd_not_empty)
+        pump_from_tmp (out->out, stdout);
+      if (errfd_not_empty && out->err != out->out)
+        pump_from_tmp (out->err, stderr);
+
+# ifndef KMK /* this drives me bananas. */
+      if (traced)
+        log_working_directory (0);
+# endif
+
+      /* Exit the critical section.  */
+      if (sem)
+        release_semaphore (sem);
+
+# ifdef KMK
+      if (!out->dont_truncate)
+        { /* likely */ }
+      else return;
+# endif
+      /* Truncate and reset the output, in case we use it again.  */
+      if (out->out != OUTPUT_NONE)
+        {
+          int e;
+          lseek (out->out, 0, SEEK_SET);
+          EINTRLOOP (e, ftruncate (out->out, 0));
+        }
+      if (out->err != OUTPUT_NONE && out->err != out->out)
+        {
+          int e;
+          lseek (out->err, 0, SEEK_SET);
+          EINTRLOOP (e, ftruncate (out->err, 0));
+        }
+    }
+#endif
+}
+
+# if defined(KMK) && !defined(CONFIG_WITH_OUTPUT_IN_MEMORY)
+/* Used by die_with_job_output to suppress output when it shouldn't be repeated. */
+void output_reset (struct output *out)
+{
+  if (out)
+    {
+      if (out->out != OUTPUT_NONE)
+        {
+          int e;
+          lseek (out->out, 0, SEEK_SET);
+          EINTRLOOP (e, ftruncate (out->out, 0));
+        }
+      if (out->err != OUTPUT_NONE && out->err != out->out)
+        {
+          int e;
+          lseek (out->err, 0, SEEK_SET);
+          EINTRLOOP (e, ftruncate (out->err, 0));
+        }
+    }
+}
+# endif
+#endif /* NO_OUTPUT_SYNC */
+
+
+/* Provide support for temporary files.  */
+
+#ifndef HAVE_STDLIB_H
+# ifdef HAVE_MKSTEMP
+int mkstemp (char *template);
+# else
+char *mktemp (char *template);
+# endif
+#endif
+
+FILE *
+output_tmpfile (char **name, const char *template)
+{
+#ifdef HAVE_FDOPEN
+  int fd;
+#endif
+
+#if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
+# define TEMPLATE_LEN   strlen (template)
+#else
+# define TEMPLATE_LEN   L_tmpnam
+#endif
+  *name = xmalloc (TEMPLATE_LEN + 1);
+  strcpy (*name, template);
+
+#if defined HAVE_MKSTEMP && defined HAVE_FDOPEN
+  /* It's safest to use mkstemp(), if we can.  */
+  fd = mkstemp (*name);
+  if (fd == -1)
+    return 0;
+  return fdopen (fd, "w");
+#else
+# ifdef HAVE_MKTEMP
+  (void) mktemp (*name);
+# else
+  (void) tmpnam (*name);
+# endif
+
+# ifdef HAVE_FDOPEN
+  /* Can't use mkstemp(), but guard against a race condition.  */
+  EINTRLOOP (fd, open (*name, O_CREAT|O_EXCL|O_WRONLY, 0600));
+  if (fd == -1)
+    return 0;
+  return fdopen (fd, "w");
+# else
+  /* Not secure, but what can we do?  */
+  return fopen (*name, "w");
+# endif
+#endif
+}
+
+
+/* This code is stolen from gnulib.
+   If/when we abandon the requirement to work with K&R compilers, we can
+   remove this (and perhaps other parts of GNU make!) and migrate to using
+   gnulib directly.
+
+   This is called only through atexit(), which means die() has already been
+   invoked.  So, call exit() here directly.  Apparently that works...?
+*/
+
+/* Close standard output, exiting with status 'exit_failure' on failure.
+   If a program writes *anything* to stdout, that program should close
+   stdout and make sure that it succeeds before exiting.  Otherwise,
+   suppose that you go to the extreme of checking the return status
+   of every function that does an explicit write to stdout.  The last
+   printf can succeed in writing to the internal stream buffer, and yet
+   the fclose(stdout) could still fail (due e.g., to a disk full error)
+   when it tries to write out that buffered data.  Thus, you would be
+   left with an incomplete output file and the offending program would
+   exit successfully.  Even calling fflush is not always sufficient,
+   since some file systems (NFS and CODA) buffer written/flushed data
+   until an actual close call.
+
+   Besides, it's wasteful to check the return value from every call
+   that writes to stdout -- just let the internal stream state record
+   the failure.  That's what the ferror test is checking below.
+
+   It's important to detect such failures and exit nonzero because many
+   tools (most notably 'make' and other build-management systems) depend
+   on being able to detect failure in other tools via their exit status.  */
+
+static void
+close_stdout (void)
+{
+  int prev_fail = ferror (stdout);
+  int fclose_fail = fclose (stdout);
+
+  if (prev_fail || fclose_fail)
+    {
+      if (fclose_fail)
+        perror_with_name (_("write error: stdout"), "");
+      else
+        O (error, NILF, _("write error: stdout"));
+      exit (MAKE_TROUBLE);
+    }
+}
+
+
+void
+output_init (struct output *out)
+{
+  if (out)
+    {
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+      out->out.head_seg  = NULL;
+      out->out.tail_seg  = NULL;
+      out->out.head_run  = NULL;
+      out->out.tail_run  = NULL;
+      out->err.head_seg  = NULL;
+      out->err.tail_seg  = NULL;
+      out->err.head_run  = NULL;
+      out->err.tail_run  = NULL;
+      out->err.total     = 0;
+      out->out.total     = 0;
+      out->seqno         = 0;
+#else
+      out->out = out->err = OUTPUT_NONE;
+#endif
+      out->syncout = !!output_sync;
+#ifdef KMK
+      out->dont_truncate = 0;
+#endif
+      return;
+    }
+
+  /* Configure this instance of make.  Be sure stdout is line-buffered.  */
+
+#ifdef HAVE_SETVBUF
+# ifdef SETVBUF_REVERSED
+  setvbuf (stdout, _IOLBF, xmalloc (BUFSIZ), BUFSIZ);
+# else  /* setvbuf not reversed.  */
+  /* Some buggy systems lose if we pass 0 instead of allocating ourselves.  */
+  setvbuf (stdout, 0, _IOLBF, BUFSIZ);
+# endif /* setvbuf reversed.  */
+#elif HAVE_SETLINEBUF
+  setlinebuf (stdout);
+#endif  /* setlinebuf missing.  */
+
+  /* Force stdout/stderr into append mode.  This ensures parallel jobs won't
+     lose output due to overlapping writes.  */
+  set_append_mode (fileno (stdout));
+  set_append_mode (fileno (stderr));
+
+#ifdef HAVE_ATEXIT
+  if (STREAM_OK (stdout))
+    atexit (close_stdout);
+#endif
+}
+
+void
+output_close (struct output *out)
+{
+  if (! out)
+    {
+      if (stdio_traced)
+        log_working_directory (0);
+      return;
+    }
+
+#ifndef NO_OUTPUT_SYNC
+  output_dump (out);
+#endif
+
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+  assert (out->out.total == 0);
+  assert (out->out.head_seg == NULL);
+  assert (out->err.total == 0);
+  assert (out->err.head_seg == NULL);
+#else
+  if (out->out >= 0)
+    close (out->out);
+  if (out->err >= 0 && out->err != out->out)
+    close (out->err);
+#endif
+
+  output_init (out);
+}
+
+/* We're about to generate output: be sure it's set up.  */
+void
+output_start (void)
+{
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+  /* If we're syncing output make sure the sempahore (win) is set up. */
+  if (output_context && output_context->syncout)
+    if (combined_output < 0)
+      combined_output = sync_init ();
+#else
+#ifndef NO_OUTPUT_SYNC
+  /* If we're syncing output make sure the temporary file is set up.  */
+  if (output_context && output_context->syncout)
+    if (! OUTPUT_ISSET(output_context))
+      setup_tmpfile (output_context);
+#endif
+#endif
+
+#ifndef KMK
+  /* If we're not syncing this output per-line or per-target, make sure we emit
+     the "Entering..." message where appropriate.  */
+  if (output_sync == OUTPUT_SYNC_NONE || output_sync == OUTPUT_SYNC_RECURSE)
+#else
+  /* Indiscriminately output "Entering..." and "Leaving..." message for each
+     command line or target is plain annoying!  And when there is no recursion
+     it's actually inappropriate.   Haven't got a simple way of detecting that,
+     so back to the old behavior for now.  [bird] */
+#endif
+    if (! stdio_traced && print_directory_flag)
+      stdio_traced = log_working_directory (1);
+}
+
+void
+outputs (int is_err, const char *msg)
+{
+  if (! msg || *msg == '\0')
+    return;
+
+  output_start ();
+
+  _outputs (output_context, is_err, msg);
+}
+
+
+static struct fmtstring
+  {
+    char *buffer;
+    size_t size;
+  } fmtbuf = { NULL, 0 };
+
+static char *
+get_buffer (size_t need)
+{
+  /* Make sure we have room.  NEED includes space for \0.  */
+  if (need > fmtbuf.size)
+    {
+      fmtbuf.size += need * 2;
+      fmtbuf.buffer = xrealloc (fmtbuf.buffer, fmtbuf.size);
+    }
+
+  fmtbuf.buffer[need-1] = '\0';
+
+  return fmtbuf.buffer;
+}
+
+/* Print a message on stdout.  */
+
+void
+message (int prefix, size_t len, const char *fmt, ...)
+{
+  va_list args;
+  char *p;
+
+  len += strlen (fmt) + strlen (program) + INTSTR_LENGTH + 4 + 1 + 1;
+  p = get_buffer (len);
+
+  if (prefix)
+    {
+      if (makelevel == 0)
+        sprintf (p, "%s: ", program);
+      else
+        sprintf (p, "%s[%u]: ", program, makelevel);
+      p += strlen (p);
+    }
+
+  va_start (args, fmt);
+  vsprintf (p, fmt, args);
+  va_end (args);
+
+  strcat (p, "\n");
+
+  assert (fmtbuf.buffer[len-1] == '\0');
+  outputs (0, fmtbuf.buffer);
+}
+
+/* Print an error message.  */
+
+void
+error (const floc *flocp, size_t len, const char *fmt, ...)
+{
+  va_list args;
+  char *p;
+
+  len += (strlen (fmt) + strlen (program)
+          + (flocp && flocp->filenm ? strlen (flocp->filenm) : 0)
+          + INTSTR_LENGTH + 4 + 1 + 1);
+  p = get_buffer (len);
+
+  if (flocp && flocp->filenm)
+    sprintf (p, "%s:%lu: ", flocp->filenm, flocp->lineno + flocp->offset);
+  else if (makelevel == 0)
+    sprintf (p, "%s: ", program);
+  else
+    sprintf (p, "%s[%u]: ", program, makelevel);
+  p += strlen (p);
+
+  va_start (args, fmt);
+  vsprintf (p, fmt, args);
+  va_end (args);
+
+  strcat (p, "\n");
+
+  assert (fmtbuf.buffer[len-1] == '\0');
+  outputs (1, fmtbuf.buffer);
+}
+
+/* Print an error message and exit.  */
+
+void
+fatal (const floc *flocp, size_t len, const char *fmt, ...)
+{
+  va_list args;
+  const char *stop = _(".  Stop.\n");
+  char *p;
+
+  len += (strlen (fmt) + strlen (program)
+          + (flocp && flocp->filenm ? strlen (flocp->filenm) : 0)
+          + INTSTR_LENGTH + 8 + strlen (stop) + 1);
+  p = get_buffer (len);
+
+  if (flocp && flocp->filenm)
+    sprintf (p, "%s:%lu: *** ", flocp->filenm, flocp->lineno + flocp->offset);
+  else if (makelevel == 0)
+    sprintf (p, "%s: *** ", program);
+  else
+    sprintf (p, "%s[%u]: *** ", program, makelevel);
+  p += strlen (p);
+
+  va_start (args, fmt);
+  vsprintf (p, fmt, args);
+  va_end (args);
+
+  strcat (p, stop);
+
+  assert (fmtbuf.buffer[len-1] == '\0');
+  outputs (1, fmtbuf.buffer);
+
+  die (MAKE_FAILURE);
+}
+
+/* Print an error message from errno.  */
+
+void
+perror_with_name (const char *str, const char *name)
+{
+  const char *err = strerror (errno);
+  OSSS (error, NILF, _("%s%s: %s"), str, name, err);
+}
+
+/* Print an error message from errno and exit.  */
+
+void
+pfatal_with_name (const char *name)
+{
+  const char *err = strerror (errno);
+  OSS (fatal, NILF, _("%s: %s"), name, err);
+
+  /* NOTREACHED */
+}
diff --git a/src/kmk/output.h b/src/kmk/output.h
new file mode 100644
index 0000000..d34d052
--- /dev/null
+++ b/src/kmk/output.h
@@ -0,0 +1,107 @@
+/* Output to stdout / stderr for GNU make
+Copyright (C) 2013-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef INCLUDED_MAKE_OUTPUT_H
+#define INCLUDED_MAKE_OUTPUT_H
+#include <stdio.h> /* darwin*/
+
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+/*  Output run. */
+struct output_run
+{
+    unsigned int seqno;         /* For interleaving out/err output. */
+    unsigned int len;           /* The length of the output. */
+    struct output_run *next;    /* Pointer to the next run. */
+};
+
+/* Output segment. */
+struct output_segment
+{
+    struct output_segment *next;
+    size_t size;                 /* Segment size, everything included. */
+    struct output_run runs[1];
+};
+
+/* Output memory buffer. */
+struct output_membuf
+{
+    struct output_run     *head_run;
+    struct output_run     *tail_run; /* Always in tail_seg. */
+    struct output_segment *head_seg;
+    struct output_segment *tail_seg;
+    size_t left;                /* Number of bytes that can be appended to
+                                   the tail_run.  */
+    size_t total;               /* Total segment allocation size.  */
+};
+#endif /* CONFIG_WITH_OUTPUT_IN_MEMORY */
+
+struct output
+  {
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+    struct output_membuf out;
+    struct output_membuf err;
+    unsigned int seqno;         /* The current run sequence number. */
+#else
+    int out;
+    int err;
+#endif
+    unsigned int syncout:1;     /* True if we want to synchronize output.  */
+#ifdef KMK
+    unsigned int dont_truncate:1; /* For die_with_child_output repeat.  */
+#endif
+ };
+
+extern struct output *output_context;
+extern unsigned int stdio_traced;
+#if defined(KMK) && !defined(NO_OUTPUT_SYNC)
+extern int output_metered;
+#endif
+
+#define OUTPUT_SET(_new)    do{ output_context = (_new)->syncout ? (_new) : NULL; }while(0)
+#define OUTPUT_UNSET()      do{ output_context = NULL; }while(0)
+
+#define OUTPUT_TRACED()     do{ stdio_traced = 1; }while(0)
+#define OUTPUT_IS_TRACED()  (!!stdio_traced)
+
+FILE *output_tmpfile (char **, const char *);
+
+/* Initialize and close a child output structure: if NULL do this program's
+   output (this should only be done once).  */
+void output_init (struct output *out);
+void output_close (struct output *out);
+
+/* In situations where output may be about to be displayed but we're not
+   sure if we've set it up yet, call this.  */
+void output_start (void);
+
+/* Show a message on stdout or stderr.  Will start the output if needed.  */
+void outputs (int is_err, const char *msg);
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+ssize_t output_write_bin (struct output *out, int is_err, const char *src, size_t len);
+#endif
+ssize_t output_write_text (struct output *out, int is_err, const char *src, size_t len);
+
+#ifndef NO_OUTPUT_SYNC
+int output_tmpfd (void);
+/* Dump any child output content to stdout, and reset it.  */
+void output_dump (struct output *out);
+# ifdef KMK
+void output_reset (struct output *out);
+# endif
+#endif
+
+#endif /* INLCUDED_MAKE_OUTPUT_H */
+
diff --git a/src/kmk/po/.gitignore b/src/kmk/po/.gitignore
new file mode 100644
index 0000000..d7261f5
--- /dev/null
+++ b/src/kmk/po/.gitignore
@@ -0,0 +1,15 @@
+Makefile.in.in
+Makevars.template
+POTFILES
+Rules-quot
+boldquot.sed
+en@boldquot.header
+en@quot.header
+insert-header.sin
+make.pot
+quot.sed
+remove-potcdate.sin
+remove-potcdate.sed
+stamp-po
+*.gmo
+*.po
diff --git a/src/kmk/po/LINGUAS b/src/kmk/po/LINGUAS
new file mode 100644
index 0000000..d9ba7f4
--- /dev/null
+++ b/src/kmk/po/LINGUAS
@@ -0,0 +1,5 @@
+# Set of available languages: 25 languages
+
+be cs da de es fi fr ga gl he hr id it ja ko lt nl pl pt_BR ru sv tr uk vi zh_CN
+
+# Can't seem to get en@quot and en@boldquot to build properly?
diff --git a/src/kmk/po/Makevars b/src/kmk/po/Makevars
new file mode 100644
index 0000000..ee01884
--- /dev/null
+++ b/src/kmk/po/Makevars
@@ -0,0 +1,59 @@
+# This is a -*-Makefile-*-
+# Copyright (C) 2002-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation; either version 3 of the License, or (at your option)
+# any later version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+# Makefile variables for PO directory in any package using GNU gettext.
+
+# Usually the message domain is the same as the package name.
+DOMAIN = $(PACKAGE)
+
+# These two variables depend on the location of this directory.
+subdir = po
+top_builddir = ..
+
+# These options get passed to xgettext.
+XGETTEXT_OPTIONS = --keyword=_ --keyword=N_
+
+# This is the copyright holder that gets inserted into the header of the
+# $(DOMAIN).pot file.  Set this to the copyright holder of the surrounding
+# package.  (Note that the msgstr strings, extracted from the package's
+# sources, belong to the copyright holder of the package.)  Translators are
+# expected to transfer the copyright for their translations to this person
+# or entity, or to disclaim their copyright.  The empty string stands for
+# the public domain; in this case the translators are expected to disclaim
+# their copyright.
+COPYRIGHT_HOLDER = Free Software Foundation, Inc.
+
+# This is the email address or URL to which the translators shall report
+# bugs in the untranslated strings:
+# - Strings which are not entire sentences, see the maintainer guidelines
+#   in the GNU gettext documentation, section 'Preparing Strings'.
+# - Strings which use unclear terms or require additional context to be
+#   understood.
+# - Strings which make invalid assumptions about notation of date, time or
+#   money.
+# - Pluralisation problems.
+# - Incorrect English spelling.
+# - Incorrect formatting.
+# It can be your email address, or a mailing list address where translators
+# can write to without being subscribed, or the URL of a web page through
+# which the translators can contact you.
+MSGID_BUGS_ADDRESS = bug-make@gnu.org
+
+# This is the list of locale categories, beyond LC_MESSAGES, for which the
+# message catalogs shall be used.  It is usually empty.
+EXTRA_LOCALE_CATEGORIES =
diff --git a/src/kmk/po/POTFILES.in b/src/kmk/po/POTFILES.in
new file mode 100644
index 0000000..8b0e500
--- /dev/null
+++ b/src/kmk/po/POTFILES.in
@@ -0,0 +1,48 @@
+# List of source files containing translatable strings.
+# Copyright (C) 2000-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+ar.c
+arscan.c
+commands.c
+dir.c
+expand.c
+file.c
+function.c
+getopt.c
+guile.c
+hash.c
+implicit.c
+job.c
+job.h
+kbuild.c
+load.c
+main.c
+misc.c
+output.c
+posixos.c
+read.c
+remake.c
+remote-cstms.c
+rule.c
+signame.c
+strcache.c
+variable.c
+variable.h
+vmsfunctions.c
+vmsjobs.c
+vpath.c
+w32/w32os.c
diff --git a/src/kmk/posixos.c b/src/kmk/posixos.c
new file mode 100644
index 0000000..e032648
--- /dev/null
+++ b/src/kmk/posixos.c
@@ -0,0 +1,480 @@
+/* POSIX-based operating system interface for GNU Make.
+Copyright (C) 2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <stdio.h>
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#endif
+#if defined(HAVE_PSELECT) && defined(HAVE_SYS_SELECT_H)
+# include <sys/select.h>
+#endif
+
+#include "debug.h"
+#include "job.h"
+#include "os.h"
+
+#ifdef MAKE_JOBSERVER
+
+/* This section provides OS-specific functions to support the jobserver.  */
+
+/* These track the state of the jobserver pipe.  Passed to child instances.  */
+static int job_fds[2] = { -1, -1 };
+
+/* Used to signal read() that a SIGCHLD happened.  Always CLOEXEC.
+   If we use pselect() this will never be created and always -1.
+ */
+static int volatile job_rfd = -1; /* bird: added volatile to try ensure atomic update.  */
+
+/* Token written to the pipe (could be any character...)  */
+static char token = '+';
+
+static int
+make_job_rfd (void)
+{
+#ifdef HAVE_PSELECT
+  /* Pretend we succeeded.  */
+  return 0;
+#else
+  /* bird: modified to use local variable and only update job_rfd once, otherwise
+           we're racing the signal handler clearing and closing this. */
+  int new_job_rfd;
+  EINTRLOOP (new_job_rfd, dup (job_fds[0]));
+  if (new_job_rfd >= 0)
+    CLOSE_ON_EXEC (new_job_rfd);
+
+  job_rfd = new_job_rfd;
+  return new_job_rfd;
+#endif
+}
+
+static void
+set_blocking (int fd, int blocking)
+{
+  // If we're not using pselect() don't change the blocking
+#ifdef HAVE_PSELECT
+  int flags;
+  EINTRLOOP (flags, fcntl (fd, F_GETFL));
+  if (flags >= 0)
+    {
+      int r;
+      flags = blocking ? (flags & ~O_NONBLOCK) : (flags | O_NONBLOCK);
+      EINTRLOOP (r, fcntl (fd, F_SETFL, flags));
+      if (r < 0)
+        pfatal_with_name ("fcntl(O_NONBLOCK)");
+    }
+#endif
+}
+
+unsigned int
+jobserver_setup (int slots)
+{
+  int r;
+
+  EINTRLOOP (r, pipe (job_fds));
+  if (r < 0)
+    pfatal_with_name (_("creating jobs pipe"));
+
+  if (make_job_rfd () < 0)
+    pfatal_with_name (_("duping jobs pipe"));
+
+  while (slots--)
+    {
+      EINTRLOOP (r, write (job_fds[1], &token, 1));
+      if (r != 1)
+        pfatal_with_name (_("init jobserver pipe"));
+    }
+
+  /* When using pselect() we want the read to be non-blocking.  */
+  set_blocking (job_fds[0], 0);
+
+  return 1;
+}
+
+unsigned int
+jobserver_parse_auth (const char *auth)
+{
+  /* Given the command-line parameter, parse it.  */
+  if (sscanf (auth, "%d,%d", &job_fds[0], &job_fds[1]) != 2)
+    OS (fatal, NILF,
+        _("internal error: invalid --jobserver-auth string '%s'"), auth);
+
+  DB (DB_JOBS,
+      (_("Jobserver client (fds %d,%d)\n"), job_fds[0], job_fds[1]));
+
+#ifdef HAVE_FCNTL_H
+# define FD_OK(_f) (fcntl ((_f), F_GETFD) != -1)
+#else
+# define FD_OK(_f) 1
+#endif
+
+  /* Make sure our pipeline is valid, and (possibly) create a duplicate pipe,
+     that will be closed in the SIGCHLD handler.  If this fails with EBADF,
+     the parent has closed the pipe on us because it didn't think we were a
+     submake.  If so, warn and default to -j1.  */
+
+  if (!FD_OK (job_fds[0]) || !FD_OK (job_fds[1]) || make_job_rfd () < 0)
+    {
+      if (errno != EBADF)
+        pfatal_with_name (_("jobserver pipeline"));
+
+      job_fds[0] = job_fds[1] = -1;
+
+      return 0;
+    }
+
+  /* When using pselect() we want the read to be non-blocking.  */
+  set_blocking (job_fds[0], 0);
+
+  return 1;
+}
+
+char *
+jobserver_get_auth (void)
+{
+  char *auth = xmalloc ((INTSTR_LENGTH * 2) + 2);
+  sprintf (auth, "%d,%d", job_fds[0], job_fds[1]);
+  return auth;
+}
+
+unsigned int
+jobserver_enabled (void)
+{
+  return job_fds[0] >= 0;
+}
+
+void
+jobserver_clear (void)
+{
+  if (job_fds[0] >= 0)
+    close (job_fds[0]);
+  if (job_fds[1] >= 0)
+    close (job_fds[1]);
+  if (job_rfd >= 0)
+    close (job_rfd);
+
+  job_fds[0] = job_fds[1] = job_rfd = -1;
+}
+
+void
+jobserver_release (int is_fatal)
+{
+  int r;
+  EINTRLOOP (r, write (job_fds[1], &token, 1));
+  if (r != 1)
+    {
+      if (is_fatal)
+        pfatal_with_name (_("write jobserver"));
+      perror_with_name ("write", "");
+    }
+}
+
+unsigned int
+jobserver_acquire_all (void)
+{
+  unsigned int tokens = 0;
+
+  /* Use blocking reads to wait for all outstanding jobs.  */
+  set_blocking (job_fds[0], 1);
+
+  /* Close the write side, so the read() won't hang forever.  */
+  close (job_fds[1]);
+  job_fds[1] = -1;
+
+  while (1)
+    {
+      char intake;
+      int r;
+      EINTRLOOP (r, read (job_fds[0], &intake, 1));
+      if (r != 1)
+        return tokens;
+      ++tokens;
+    }
+}
+
+/* Prepare the jobserver to start a child process.  */
+void
+jobserver_pre_child (int recursive)
+{
+  /* If it's not a recursive make, avoid polutting the jobserver pipes.  */
+  if (!recursive && job_fds[0] >= 0)
+    {
+      CLOSE_ON_EXEC (job_fds[0]);
+      CLOSE_ON_EXEC (job_fds[1]);
+    }
+}
+
+void
+jobserver_post_child (int recursive)
+{
+#if defined(F_GETFD) && defined(F_SETFD)
+  if (!recursive && job_fds[0] >= 0)
+    {
+      unsigned int i;
+      for (i = 0; i < 2; ++i)
+        {
+          int flags;
+          EINTRLOOP (flags, fcntl (job_fds[i], F_GETFD));
+          if (flags >= 0)
+            {
+              int r;
+              EINTRLOOP (r, fcntl (job_fds[i], F_SETFD, flags & ~FD_CLOEXEC));
+            }
+        }
+    }
+#endif
+}
+
+void
+jobserver_signal (void)
+{
+  if (job_rfd >= 0)
+    {
+      close (job_rfd);
+      job_rfd = -1;
+    }
+}
+
+void
+jobserver_pre_acquire (void)
+{
+  /* Make sure we have a dup'd FD.  */
+  if (job_rfd < 0 && job_fds[0] >= 0 && make_job_rfd () < 0)
+    pfatal_with_name (_("duping jobs pipe"));
+}
+
+#ifdef HAVE_PSELECT
+
+/* Use pselect() to atomically wait for both a signal and a file descriptor.
+   It also provides a timeout facility so we don't need to use SIGALRM.
+
+   This method relies on the fact that SIGCHLD will be blocked everywhere,
+   and only unblocked (atomically) within the pselect() call, so we can
+   never miss a SIGCHLD.
+ */
+unsigned int
+jobserver_acquire (int timeout)
+{
+  struct timespec spec;
+  struct timespec *specp = NULL;
+  sigset_t empty;
+
+  sigemptyset (&empty);
+
+  if (timeout)
+    {
+      /* Alarm after one second (is this too granular?)  */
+      spec.tv_sec = 1;
+      spec.tv_nsec = 0;
+      specp = &spec;
+    }
+
+  while (1)
+    {
+      fd_set readfds;
+      int r;
+      char intake;
+
+      FD_ZERO (&readfds);
+      FD_SET (job_fds[0], &readfds);
+
+      r = pselect (job_fds[0]+1, &readfds, NULL, NULL, specp, &empty);
+      if (r < 0)
+        switch (errno)
+          {
+          case EINTR:
+            /* SIGCHLD will show up as an EINTR.  */
+            return 0;
+
+          case EBADF:
+            /* Someone closed the jobs pipe.
+               That shouldn't happen but if it does we're done.  */
+              O (fatal, NILF, _("job server shut down"));
+
+          default:
+            pfatal_with_name (_("pselect jobs pipe"));
+          }
+
+      if (r == 0)
+        /* Timeout.  */
+        return 0;
+
+      /* The read FD is ready: read it!  This is non-blocking.  */
+      EINTRLOOP (r, read (job_fds[0], &intake, 1));
+
+      if (r < 0)
+        {
+          /* Someone sniped our token!  Try again.  */
+          if (errno == EAGAIN)
+            continue;
+
+          pfatal_with_name (_("read jobs pipe"));
+        }
+
+      /* read() should never return 0: only the master make can reap all the
+         tokens and close the write side...??  */
+      return r > 0;
+    }
+}
+
+#else
+
+/* This method uses a "traditional" UNIX model for waiting on both a signal
+   and a file descriptor.  However, it's complex and since we have a SIGCHLD
+   handler installed we need to check ALL system calls for EINTR: painful!
+
+   Read a token.  As long as there's no token available we'll block.  We
+   enable interruptible system calls before the read(2) so that if we get a
+   SIGCHLD while we're waiting, we'll return with EINTR and we can process the
+   death(s) and return tokens to the free pool.
+
+   Once we return from the read, we immediately reinstate restartable system
+   calls.  This allows us to not worry about checking for EINTR on all the
+   other system calls in the program.
+
+   There is one other twist: there is a span between the time reap_children()
+   does its last check for dead children and the time the read(2) call is
+   entered, below, where if a child dies we won't notice.  This is extremely
+   serious as it could cause us to deadlock, given the right set of events.
+
+   To avoid this, we do the following: before we reap_children(), we dup(2)
+   the read FD on the jobserver pipe.  The read(2) call below uses that new
+   FD.  In the signal handler, we close that FD.  That way, if a child dies
+   during the section mentioned above, the read(2) will be invoked with an
+   invalid FD and will return immediately with EBADF.  */
+
+static RETSIGTYPE
+job_noop (int sig UNUSED)
+{
+}
+
+/* Set the child handler action flags to FLAGS.  */
+static void
+set_child_handler_action_flags (int set_handler, int set_alarm)
+{
+  struct sigaction sa;
+
+#ifdef __EMX__
+  /* The child handler must be turned off here.  */
+  signal (SIGCHLD, SIG_DFL);
+#endif
+
+  memset (&sa, '\0', sizeof sa);
+  sa.sa_handler = child_handler;
+  sa.sa_flags = set_handler ? 0 : SA_RESTART;
+
+#if defined SIGCHLD
+  if (sigaction (SIGCHLD, &sa, NULL) < 0)
+    pfatal_with_name ("sigaction: SIGCHLD");
+#endif
+
+#if defined SIGCLD && SIGCLD != SIGCHLD
+  if (sigaction (SIGCLD, &sa, NULL) < 0)
+    pfatal_with_name ("sigaction: SIGCLD");
+#endif
+
+#if defined SIGALRM
+  if (set_alarm)
+    {
+      /* If we're about to enter the read(), set an alarm to wake up in a
+         second so we can check if the load has dropped and we can start more
+         work.  On the way out, turn off the alarm and set SIG_DFL.  */
+      if (set_handler)
+        {
+          sa.sa_handler = job_noop;
+          sa.sa_flags = 0;
+          if (sigaction (SIGALRM, &sa, NULL) < 0)
+            pfatal_with_name ("sigaction: SIGALRM");
+          alarm (1);
+        }
+      else
+        {
+          alarm (0);
+          sa.sa_handler = SIG_DFL;
+          sa.sa_flags = 0;
+          if (sigaction (SIGALRM, &sa, NULL) < 0)
+            pfatal_with_name ("sigaction: SIGALRM");
+        }
+    }
+#endif
+}
+
+unsigned int
+jobserver_acquire (int timeout)
+{
+  char intake;
+  int got_token;
+  int saved_errno;
+
+  /* Set interruptible system calls, and read() for a job token.  */
+  set_child_handler_action_flags (1, timeout);
+
+  EINTRLOOP (got_token, read (job_rfd, &intake, 1));
+  saved_errno = errno;
+
+  set_child_handler_action_flags (0, timeout);
+
+  if (got_token == 1)
+    return 1;
+
+  /* If the error _wasn't_ expected (EINTR or EBADF), fatal.  Otherwise,
+     go back and reap_children(), and try again.  */
+  errno = saved_errno;
+
+  if (errno != EINTR && errno != EBADF)
+    pfatal_with_name (_("read jobs pipe"));
+
+  if (errno == EBADF)
+    DB (DB_JOBS, ("Read returned EBADF.\n"));
+
+  return 0;
+}
+
+#endif
+
+#endif /* MAKE_JOBSERVER */
+
+/* Create a "bad" file descriptor for stdin when parallel jobs are run.  */
+int
+get_bad_stdin (void)
+{
+  static int bad_stdin = -1;
+
+  /* Set up a bad standard input that reads from a broken pipe.  */
+
+  if (bad_stdin == -1)
+    {
+      /* Make a file descriptor that is the read end of a broken pipe.
+         This will be used for some children's standard inputs.  */
+      int pd[2];
+      if (pipe (pd) == 0)
+        {
+          /* Close the write side.  */
+          (void) close (pd[1]);
+          /* Save the read side.  */
+          bad_stdin = pd[0];
+
+          /* Set the descriptor to close on exec, so it does not litter any
+             child's descriptor table.  When it is dup2'd onto descriptor 0,
+             that descriptor will not close on exec.  */
+          CLOSE_ON_EXEC (bad_stdin);
+        }
+    }
+
+  return bad_stdin;
+}
diff --git a/src/kmk/prepare_vms.com b/src/kmk/prepare_vms.com
new file mode 100644
index 0000000..04f581f
--- /dev/null
+++ b/src/kmk/prepare_vms.com
@@ -0,0 +1,59 @@
+$!
+$! prepare_vms.com  - Build config.h-vms from master on VMS.
+$!
+$! This is used for building off the master instead of a release tarball.
+$!
+$!
+$!
+$! First try ODS-5, Pathworks V6 or UNZIP name.
+$!
+$ config_template = f$search("sys$disk:[]config*h-vms.template")
+$ if config_template .eqs. ""
+$ then
+$!
+$!  Try NFS, VMStar, or Pathworks V5 ODS-2 encoded name.
+$!
+$   config_template = f$search("sys$disk:[]config.h-vms*template")
+$   if config_template .eqs. ""
+$   then
+$       write sys$output "Could not find config.h-vms*template!"
+$       exit 44
+$   endif
+$ endif
+$ config_template_file = f$parse(config_template,,,"name")
+$ config_template_type = f$parse(config_template,,,"type")
+$ config_template = "sys$disk:[]" + config_template_file + config_template_type
+$!
+$!
+$! Pull the package and version from configure.ac
+$!
+$ open/read ac_file sys$disk:[]configure.ac
+$ac_read_loop:
+$ read ac_file/end=ac_read_loop_end line_in
+$ key = f$extract(0, 7, line_in)
+$ if key .nes. "AC_INIT" then goto ac_read_loop
+$ package = f$element (1,"[",line_in)
+$ package = f$element (0,"]",package)
+$ version = f$element (2,"[",line_in)
+$ version = f$element (0,"]",version)
+$ac_read_loop_end:
+$ close ac_file
+$!
+$ if (package .eqs. "") .or. (version .eqs. "")
+$ then
+$    write sys$output "Unable to determine package and/or version!"
+$    exit 44
+$ endif
+$!
+$!
+$ outfile = "sys$disk:[]config.h-vms"
+$!
+$! Note the pipe command is close to the length of 255, which is the
+$! maximum token length prior to VMS V8.2:
+$! %DCL-W-TKNOVF, command element is too long - shorten
+$ pipe (write sys$output "sub/%PACKAGE%/''package'/WHOLE/NOTYPE" ;-
+        write sys$output "sub/%VERSION%/''version'/WHOLE/NOTYPE" ;-
+        write sys$output "exit") |-
+       edit/edt 'config_template'/out='outfile'/command=sys$pipe >nla0:
+$!
+$ write sys$output package, ", version: ", version, " prepared for VMS"
diff --git a/src/kmk/prepare_w32.bat b/src/kmk/prepare_w32.bat
new file mode 100644
index 0000000..7591e27
--- /dev/null
+++ b/src/kmk/prepare_w32.bat
@@ -0,0 +1,6 @@
+@echo off

+@echo Windows32 SCM build preparation of config.h.W32 and NMakefile.

+if not exist config.h.W32 copy config.h.W32.template config.h.W32

+if not exist config.h copy config.h.W32 config.h

+if not exist NMakefile copy NMakefile.template NMakefile

+@echo Preparation complete.  Run build_w32.bat to compile and link.

diff --git a/src/kmk/read.c b/src/kmk/read.c
new file mode 100644
index 0000000..6ecac0c
--- /dev/null
+++ b/src/kmk/read.c
@@ -0,0 +1,4101 @@
+/* Reading and parsing of makefiles for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <assert.h>
+
+#include "filedef.h"
+#include "dep.h"
+#include "job.h"
+#include "commands.h"
+#include "variable.h"
+#include "rule.h"
+#include "debug.h"
+#include "hash.h"
+#ifdef KMK
+# include "kbuild.h"
+#endif
+
+#ifdef WINDOWS32
+#include <windows.h>
+# ifndef _MSC_VER
+#  ifndef CONFIG_NEW_WIN_CHILDREN
+#   include "sub_proc.h"
+#  else
+#   include "w32/winchildren.h"
+#  endif
+# endif
+#else  /* !WINDOWS32 */
+#ifndef _AMIGA
+#ifndef VMS
+#include <pwd.h>
+#else
+struct passwd *getpwnam (char *name);
+#endif
+#endif
+#endif /* !WINDOWS32 */
+
+/* A 'struct ebuffer' controls the origin of the makefile we are currently
+   eval'ing.
+*/
+
+struct ebuffer
+  {
+    char *buffer;       /* Start of the current line in the buffer.  */
+    char *bufnext;      /* Start of the next line in the buffer.  */
+    char *bufstart;     /* Start of the entire buffer.  */
+#ifdef CONFIG_WITH_VALUE_LENGTH
+    char *eol;          /* End of the current line in the buffer. */
+#endif
+    unsigned int size;  /* Malloc'd size of buffer. */
+    FILE *fp;           /* File, or NULL if this is an internal buffer.  */
+    floc floc;          /* Info on the file in fp (if any).  */
+  };
+
+/* Track the modifiers we can have on variable assignments */
+
+struct vmodifiers
+  {
+    unsigned int assign_v:1;
+    unsigned int define_v:1;
+    unsigned int undefine_v:1;
+    unsigned int export_v:1;
+    unsigned int override_v:1;
+    unsigned int private_v:1;
+  };
+
+/* Types of "words" that can be read in a makefile.  */
+enum make_word_type
+  {
+     w_bogus, w_eol, w_static, w_variable, w_colon, w_dcolon, w_semicolon,
+     w_varassign
+  };
+
+
+/* A 'struct conditionals' contains the information describing
+   all the active conditionals in a makefile.
+
+   The global variable 'conditionals' contains the conditionals
+   information for the current makefile.  It is initialized from
+   the static structure 'toplevel_conditionals' and is later changed
+   to new structures for included makefiles.  */
+
+struct conditionals
+  {
+    unsigned int if_cmds;       /* Depth of conditional nesting.  */
+    unsigned int allocated;     /* Elts allocated in following arrays.  */
+    char *ignoring;             /* Are we ignoring or interpreting?
+                                   0=interpreting, 1=not yet interpreted,
+                                   2=already interpreted */
+    char *seen_else;            /* Have we already seen an 'else'?  */
+#ifdef KMK
+    char ignoring_first[8];
+    char seen_else_first[8];
+#endif
+  };
+
+#ifdef KMK
+static struct conditionals toplevel_conditionals =
+{
+    0,
+    sizeof (toplevel_conditionals.ignoring_first),
+    &toplevel_conditionals.ignoring_first[0],
+    &toplevel_conditionals.seen_else_first[0],
+    "", ""
+};
+#else /* !KMK */
+static struct conditionals toplevel_conditionals;
+#endif /* !KMK */
+static struct conditionals *conditionals = &toplevel_conditionals;
+
+
+/* Default directories to search for include files in  */
+
+static const char *default_include_directories[] =
+  {
+#ifndef KMK
+#if defined(WINDOWS32) && !defined(INCLUDEDIR)
+/* This completely up to the user when they install MSVC or other packages.
+   This is defined as a placeholder.  */
+# define INCLUDEDIR "."
+#endif
+# ifdef INCLUDEDIR  /* bird */
+    INCLUDEDIR,
+# else              /* bird */
+    ".",            /* bird */
+# endif             /* bird */
+#ifndef _AMIGA
+    "/usr/gnu/include",
+    "/usr/local/include",
+    "/usr/include",
+#endif
+#endif /* !KMK */
+    0
+  };
+
+/* List of directories to search for include files in  */
+
+static const char **include_directories;
+
+/* Maximum length of an element of the above.  */
+
+static unsigned int max_incl_len;
+
+/* The filename and pointer to line number of the
+   makefile currently being read in.  */
+
+const floc *reading_file = 0;
+
+/* The chain of files read by read_all_makefiles.  */
+
+static struct goaldep *read_files = 0;
+
+static struct goaldep *eval_makefile (const char *filename, int flags);
+static void eval (struct ebuffer *buffer, int flags);
+
+static long readline (struct ebuffer *ebuf);
+static void do_undefine (char *name, enum variable_origin origin,
+                         struct ebuffer *ebuf);
+static struct variable *do_define (char *name IF_WITH_VALUE_LENGTH_PARAM(char *eos),
+                                   enum variable_origin origin, struct ebuffer *ebuf);
+#ifndef CONFIG_WITH_VALUE_LENGTH
+static int conditional_line (char *line, int len, const floc *flocp);
+#else
+static int conditional_line (char *line, char *eol, int len, const floc *flocp);
+#endif
+static void record_files (struct nameseq *filenames, const char *pattern,
+                          const char *pattern_percent, char *depstr,
+                          unsigned int cmds_started, char *commands,
+                          unsigned int commands_idx, int two_colon,
+                          char prefix, const floc *flocp);
+static void record_target_var (struct nameseq *filenames, char *defn,
+                               enum variable_origin origin,
+                               struct vmodifiers *vmod,
+                               const floc *flocp);
+static enum make_word_type get_next_mword (char *buffer, char *delim,
+                                           char **startp, unsigned int *length);
+#ifndef CONFIG_WITH_VALUE_LENGTH
+static void remove_comments (char *line);
+static char *find_char_unquote (char *string, int map);
+#else /* CONFIG_WITH_VALUE_LENGTH */
+static char *remove_comments (char *line, char *eos);
+static char *find_char_unquote (char *string, int map, unsigned int string_len);
+K_INLINE char *find_char_unquote_0 (char *string, int stop1, int map, char **eosp);
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+static char *unescape_char (char *string, int c);
+
+
+/* Compare a word, both length and contents.
+   P must point to the word to be tested, and WLEN must be the length.
+*/
+#define word1eq(s)      (wlen == CSTRLEN (s) && strneq (s, p, CSTRLEN (s)))
+
+
+/* Read in all the makefiles and return a chain of targets to rebuild.  */
+
+struct goaldep *
+read_all_makefiles (const char **makefiles)
+{
+  unsigned int num_makefiles = 0;
+
+  /* Create *_LIST variables, to hold the makefiles, targets, and variables
+     we will be reading. */
+
+  define_variable_cname ("MAKEFILE_LIST", "", o_file, 0);
+
+  DB (DB_BASIC, (_("Reading makefiles...\n")));
+
+  /* If there's a non-null variable MAKEFILES, its value is a list of
+     files to read first thing.  But don't let it prevent reading the
+     default makefiles and don't let the default goal come from there.  */
+
+  {
+    char *value;
+    char *name, *p;
+    unsigned int length;
+
+    {
+      /* Turn off --warn-undefined-variables while we expand MAKEFILES.  */
+      int save = warn_undefined_variables_flag;
+      warn_undefined_variables_flag = 0;
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      value = allocated_variable_expand ("$(MAKEFILES)");
+#else
+      value = allocated_variable_expand_2 (STRING_SIZE_TUPLE("$(MAKEFILES)"), NULL);
+#endif
+
+      warn_undefined_variables_flag = save;
+    }
+
+    /* Set NAME to the start of next token and LENGTH to its length.
+       MAKEFILES is updated for finding remaining tokens.  */
+    p = value;
+
+    while ((name = find_next_token ((const char **)&p, &length)) != 0)
+      {
+        if (*p != '\0')
+          *p++ = '\0';
+        eval_makefile (name, RM_NO_DEFAULT_GOAL|RM_INCLUDED|RM_DONTCARE);
+      }
+
+    free (value);
+  }
+
+  /* Read makefiles specified with -f switches.  */
+
+  if (makefiles != 0)
+    while (*makefiles != 0)
+      {
+        struct goaldep *d = eval_makefile (*makefiles, 0);
+
+        if (errno)
+          perror_with_name ("", *makefiles);
+
+        /* Reuse the storage allocated for the read_file.  */
+        *makefiles = dep_name (d);
+        ++num_makefiles;
+        ++makefiles;
+      }
+
+  /* If there were no -f switches, try the default names.  */
+
+  if (num_makefiles == 0)
+    {
+      static const char *default_makefiles[] =
+#ifdef VMS
+        /* all lower case since readdir() (the vms version) 'lowercasifies' */
+        /* TODO: Above is not always true, this needs more work */
+# ifdef KMK
+        { "makefile.kmk", "makefile.vms", "gnumakefile.", "makefile.", 0 };
+# else
+        { "makefile.vms", "gnumakefile", "makefile", 0 };
+# endif
+#else
+#ifdef _AMIGA
+# ifdef KMK
+        { "Makefile.kmk", "makefile.kmk", "GNUmakefile", "Makefile", "SMakefile", 0 };
+# else
+        { "GNUmakefile", "Makefile", "SMakefile", 0 };
+# endif
+#else /* !Amiga && !VMS */
+#ifdef WINDOWS32
+# ifdef KMK
+        { "Makefile.kmk", "makefile.kmk", "GNUmakefile", "makefile", "Makefile", "makefile.mak", 0 };
+# else
+        { "GNUmakefile", "makefile", "Makefile", "makefile.mak", 0 };
+# endif       
+#else /* !Amiga && !VMS && !WINDOWS32 */
+# ifdef KMK
+        { "Makefile.kmk", "makefile.kmk", "GNUmakefile", "makefile", "Makefile", 0 };
+# else
+        { "GNUmakefile", "makefile", "Makefile", 0 };
+# endif
+#endif /* !Amiga && !VMS && !WINDOWS32 */
+#endif /* AMIGA */
+#endif /* VMS */
+      const char **p = default_makefiles;
+      while (*p != 0 && !file_exists_p (*p))
+        ++p;
+
+      if (*p != 0)
+        {
+          eval_makefile (*p, 0);
+          if (errno)
+            perror_with_name ("", *p);
+        }
+      else
+        {
+          /* No default makefile was found.  Add the default makefiles to the
+             'read_files' chain so they will be updated if possible.  */
+          struct goaldep *tail = read_files;
+          /* Add them to the tail, after any MAKEFILES variable makefiles.  */
+          while (tail != 0 && tail->next != 0)
+            tail = tail->next;
+          for (p = default_makefiles; *p != 0; ++p)
+            {
+              struct goaldep *d = alloc_goaldep ();
+              d->file = enter_file (strcache_add (*p));
+              /* Tell update_goal_chain to bail out as soon as this file is
+                 made, and main not to die if we can't make this file.  */
+              d->flags = RM_DONTCARE;
+              if (tail == 0)
+                read_files = d;
+              else
+                tail->next = d;
+              tail = d;
+            }
+          if (tail != 0)
+            tail->next = 0;
+        }
+    }
+
+  return read_files;
+}
+
+/* Install a new conditional and return the previous one.  */
+
+static struct conditionals *
+install_conditionals (struct conditionals *new)
+{
+  struct conditionals *save = conditionals;
+
+#ifndef KMK
+  memset (new, '\0', sizeof (*new));
+#else  /* KMK */
+  new->if_cmds   = 0;
+  new->allocated = sizeof (new->ignoring_first);
+  new->ignoring  = new->ignoring_first;
+  new->seen_else = new->seen_else_first;
+#endif /* KMK */
+  conditionals = new;
+
+  return save;
+}
+
+/* Free the current conditionals and reinstate a saved one.  */
+
+static void
+restore_conditionals (struct conditionals *saved)
+{
+  /* Free any space allocated by conditional_line.  */
+#ifdef KMK
+ if (conditionals->allocated > sizeof (conditionals->ignoring_first))
+ {
+#endif
+  free (conditionals->ignoring);
+  free (conditionals->seen_else);
+#ifdef KMK
+ }
+#endif
+
+  /* Restore state.  */
+  conditionals = saved;
+}
+
+static struct goaldep *
+eval_makefile (const char *filename, int flags)
+{
+  struct goaldep *deps;
+  struct ebuffer ebuf;
+  const floc *curfile;
+  char *expanded = 0;
+  int makefile_errno;
+
+  ebuf.floc.filenm = filename; /* Use the original file name.  */
+  ebuf.floc.lineno = 1;
+  ebuf.floc.offset = 0;
+
+  if (ISDB (DB_VERBOSE))
+    {
+      printf (_("Reading makefile '%s'"), filename);
+      if (flags & RM_NO_DEFAULT_GOAL)
+        printf (_(" (no default goal)"));
+      if (flags & RM_INCLUDED)
+        printf (_(" (search path)"));
+      if (flags & RM_DONTCARE)
+        printf (_(" (don't care)"));
+      if (flags & RM_NO_TILDE)
+        printf (_(" (no ~ expansion)"));
+      puts ("...");
+    }
+
+  /* First, get a stream to read.  */
+
+  /* Expand ~ in FILENAME unless it came from 'include',
+     in which case it was already done.  */
+  if (!(flags & RM_NO_TILDE) && filename[0] == '~')
+    {
+      expanded = tilde_expand (filename);
+      if (expanded != 0)
+        filename = expanded;
+    }
+
+#ifdef _MSC_VER
+  ENULLLOOP (ebuf.fp, fopen (filename, "rN")); /* N == noinherit */
+#else
+  ENULLLOOP (ebuf.fp, fopen (filename, "r"));
+#endif
+
+  /* Save the error code so we print the right message later.  */
+  makefile_errno = errno;
+
+  /* Check for unrecoverable errors: out of mem or FILE slots.  */
+  switch (makefile_errno)
+    {
+#ifdef EMFILE
+    case EMFILE:
+#endif
+#ifdef ENFILE
+    case ENFILE:
+#endif
+    case ENOMEM:
+      {
+        const char *err = strerror (makefile_errno);
+        OS (fatal, reading_file, "%s", err);
+      }
+    }
+
+  /* If the makefile wasn't found and it's either a makefile from
+     the 'MAKEFILES' variable or an included makefile,
+     search the included makefile search path for this makefile.  */
+  if (ebuf.fp == 0 && (flags & RM_INCLUDED) && *filename != '/')
+    {
+      unsigned int i;
+      for (i = 0; include_directories[i] != 0; ++i)
+        {
+          const char *included = concat (3, include_directories[i],
+                                         "/", filename);
+#ifdef _MSC_VER
+          ebuf.fp = fopen (included, "rN"); /* N == noinherit */
+#else
+          ebuf.fp = fopen (included, "r");
+#endif
+          if (ebuf.fp)
+            {
+              filename = included;
+              break;
+            }
+        }
+    }
+
+  /* Now we have the final name for this makefile. Enter it into
+     the cache.  */
+  filename = strcache_add (filename);
+
+  /* Add FILENAME to the chain of read makefiles.  */
+  deps = alloc_goaldep ();
+  deps->next = read_files;
+  read_files = deps;
+#ifndef CONFIG_WITH_STRCACHE2
+  deps->file = lookup_file (filename);
+#else
+  deps->file = lookup_file_cached (filename);
+#endif
+  if (deps->file == 0)
+    deps->file = enter_file (filename);
+  filename = deps->file->name;
+  deps->flags = flags;
+
+  free (expanded);
+
+  /* If the makefile can't be found at all, give up entirely.  */
+
+  if (ebuf.fp == 0)
+    {
+      /* If we did some searching, errno has the error from the last
+         attempt, rather from FILENAME itself.  Store it in case the
+         caller wants to use it in a message.  */
+      errno = makefile_errno;
+      return deps;
+    }
+
+  /* Set close-on-exec to avoid leaking the makefile to children, such as
+     $(shell ...).  */
+#ifndef _MSC_VER /* not necessary, see fopen calls above. */
+#ifdef HAVE_FILENO
+  CLOSE_ON_EXEC (fileno (ebuf.fp));
+#endif
+#endif
+
+  /* Add this makefile to the list. */
+  do_variable_definition (&ebuf.floc, "MAKEFILE_LIST", filename, o_file,
+                          f_append, 0);
+
+#ifdef CONFIG_WITH_COMPILER
+  /* Execute compiled version if repeatedly evaluating this file.
+     ASSUMES file content is unmodified since compilation. */
+  deps->file->eval_count++;
+  if (   deps->file->evalprog
+# ifdef CONFIG_WITH_COMPILE_EVERYTHING
+      || (   deps->file->eval_count == 1
+# else
+      || (   deps->file->eval_count == 3
+# endif
+          && (deps->file->evalprog = kmk_cc_compile_file_for_eval (ebuf.fp, filename)) != NULL) )
+    {
+      curfile = reading_file;
+      reading_file = &ebuf.floc;
+
+      kmk_exec_eval_file (deps->file->evalprog);
+
+      reading_file = curfile;
+      fclose (ebuf.fp);
+      alloca (0);
+      return 1;
+    }
+#elif defined (CONFIG_WITH_MAKE_STATS)
+  deps->file->eval_count++;
+#endif
+
+#ifdef KMK
+  /* Buffer the entire file or at least 256KB (footer.kmk) of it. */
+  {
+    void *stream_buf = NULL;
+    struct stat st;
+# ifdef KBUILD_OS_WINDOWS
+    if (!birdStatOnFdJustSize(fileno(ebuf.fp), &st.st_size))
+# else
+    if (!fstat (fileno (ebuf.fp), &st))
+# endif
+      {
+        int stream_buf_size = 256*1024;
+        if (st.st_size < stream_buf_size)
+          {
+            if (st.st_size)
+              stream_buf_size = (st.st_size + 0xfff) & ~0xfff;
+            else
+              stream_buf_size = 0x1000;
+          }
+        stream_buf = xmalloc (stream_buf_size);
+        setvbuf (ebuf.fp, stream_buf, _IOFBF, stream_buf_size);
+      }
+#endif
+
+  /* Evaluate the makefile */
+
+  ebuf.size = 200;
+  ebuf.buffer = ebuf.bufnext = ebuf.bufstart = xmalloc (ebuf.size);
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  ebuf.eol = NULL;
+#endif
+
+  curfile = reading_file;
+  reading_file = &ebuf.floc;
+
+  eval (&ebuf, !(flags & RM_NO_DEFAULT_GOAL));
+
+  reading_file = curfile;
+
+  fclose (ebuf.fp);
+
+#ifdef KMK
+   if (stream_buf)
+     free (stream_buf);
+  }
+#endif
+  free (ebuf.bufstart);
+  alloca (0);
+
+  errno = 0;
+  return deps;
+}
+
+void
+eval_buffer (char *buffer, const floc *flocp IF_WITH_VALUE_LENGTH_PARAM(char *eos))
+{
+  struct ebuffer ebuf;
+  struct conditionals *saved;
+  struct conditionals new;
+  const floc *curfile;
+
+  /* Evaluate the buffer */
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  ebuf.size = strlen (buffer);
+#else
+  ebuf.size = eos - buffer;
+  ebuf.eol = eos;
+  assert(strchr(buffer, '\0') == eos);
+#endif
+  ebuf.buffer = ebuf.bufnext = ebuf.bufstart = buffer;
+  ebuf.fp = NULL;
+
+  if (flocp)
+    ebuf.floc = *flocp;
+  else if (reading_file)
+    ebuf.floc = *reading_file;
+  else
+    {
+      ebuf.floc.filenm = NULL;
+      ebuf.floc.lineno = 1;
+      ebuf.floc.offset = 0;
+    }
+
+  curfile = reading_file;
+  reading_file = &ebuf.floc;
+
+  saved = install_conditionals (&new);
+
+  eval (&ebuf, 1);
+
+  restore_conditionals (saved);
+
+  reading_file = curfile;
+
+  alloca (0);
+}
+
+/* Check LINE to see if it's a variable assignment or undefine.
+
+   It might use one of the modifiers "export", "override", "private", or it
+   might be one of the conditional tokens like "ifdef", "include", etc.
+
+   If it's not a variable assignment or undefine, VMOD.V_ASSIGN is 0.
+   Returns LINE.
+
+   Returns a pointer to the first non-modifier character, and sets VMOD
+   based on the modifiers found if any, plus V_ASSIGN is 1.
+ */
+static char *
+parse_var_assignment (const char *line, struct vmodifiers *vmod)
+{
+  const char *p;
+  memset (vmod, '\0', sizeof (*vmod));
+
+  /* Find the start of the next token.  If there isn't one we're done.  */
+  NEXT_TOKEN (line);
+  if (*line == '\0')
+    return (char *)line;
+
+  p = line;
+  while (1)
+    {
+      int wlen;
+      const char *p2;
+      struct variable v;
+
+      p2 = parse_variable_definition (p, &v);
+
+      /* If this is a variable assignment, we're done.  */
+      if (p2)
+        break;
+
+      /* It's not a variable; see if it's a modifier.  */
+      p2 = end_of_token (p);
+      wlen = p2 - p;
+
+      if (word1eq ("export"))
+        vmod->export_v = 1;
+      else if (word1eq ("override"))
+        vmod->override_v = 1;
+      else if (word1eq ("private"))
+        vmod->private_v = 1;
+      else if (word1eq ("define"))
+        {
+          /* We can't have modifiers after 'define' */
+          vmod->define_v = 1;
+          p = next_token (p2);
+          break;
+        }
+      else if (word1eq ("undefine"))
+        {
+          /* We can't have modifiers after 'undefine' */
+          vmod->undefine_v = 1;
+          p = next_token (p2);
+          break;
+        }
+      else
+        /* Not a variable or modifier: this is not a variable assignment.  */
+        return (char *)line;
+
+      /* It was a modifier.  Try the next word.  */
+      p = next_token (p2);
+      if (*p == '\0')
+        return (char *)line;
+    }
+
+  /* Found a variable assignment or undefine.  */
+  vmod->assign_v = 1;
+  return (char *)p;
+}
+
+
+/* Read file FILENAME as a makefile and add its contents to the data base.
+
+   SET_DEFAULT is true if we are allowed to set the default goal.  */
+
+static void
+eval (struct ebuffer *ebuf, int set_default)
+{
+  char *collapsed = 0;
+  unsigned int collapsed_length = 0;
+  unsigned int commands_len = 200;
+  char *commands;
+  unsigned int commands_idx = 0;
+  unsigned int cmds_started, tgts_started;
+  int ignoring = 0, in_ignored_define = 0;
+  int no_targets = 0;           /* Set when reading a rule without targets.  */
+  struct nameseq *filenames = 0;
+  char *depstr = 0;
+  long nlines = 0;
+  int two_colon = 0;
+  char prefix = cmd_prefix;
+  const char *pattern = 0;
+  const char *pattern_percent;
+  floc *fstart;
+  floc fi;
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  unsigned int tmp_len;
+#endif
+#ifdef KMK
+  struct kbuild_eval_data *kdata = 0;
+  int krc;
+#endif
+
+#define record_waiting_files()                                                \
+  do                                                                          \
+    {                                                                         \
+      if (filenames != 0)                                                     \
+        {                                                                     \
+          fi.lineno = tgts_started;                                           \
+          fi.offset = 0;                                                      \
+          record_files (filenames, pattern, pattern_percent, depstr,          \
+                        cmds_started, commands, commands_idx, two_colon,      \
+                        prefix, &fi);                                         \
+          filenames = 0;                                                      \
+        }                                                                     \
+      commands_idx = 0;                                                       \
+      no_targets = 0;                                                         \
+      pattern = 0;                                                            \
+    } while (0)
+
+  pattern_percent = 0;
+  cmds_started = tgts_started = 1;
+
+  fstart = &ebuf->floc;
+  fi.filenm = ebuf->floc.filenm;
+
+  /* Loop over lines in the file.
+     The strategy is to accumulate target names in FILENAMES, dependencies
+     in DEPS and commands in COMMANDS.  These are used to define a rule
+     when the start of the next rule (or eof) is encountered.
+
+     When you see a "continue" in the loop below, that means we are moving on
+     to the next line.  If you see record_waiting_files(), then the statement
+     we are parsing also finishes the previous rule.  */
+
+  commands = xmalloc (200);
+
+  while (1)
+    {
+      unsigned int linelen;
+#ifdef CONFIG_WITH_VALUE_LENGTH
+      char *eol;
+#endif
+      char *line;
+      unsigned int wlen;
+      char *p;
+      char *p2;
+      struct vmodifiers vmod;
+
+      /* At the top of this loop, we are starting a brand new line.  */
+      /* Grab the next line to be evaluated */
+      ebuf->floc.lineno += nlines;
+      nlines = readline (ebuf);
+
+      /* If there is nothing left to eval, we're done.  */
+      if (nlines < 0)
+        break;
+
+      line = ebuf->buffer;
+
+      /* If this is the first line, check for a UTF-8 BOM and skip it.  */
+      if (ebuf->floc.lineno == 1 && line[0] == (char)0xEF
+          && line[1] == (char)0xBB && line[2] == (char)0xBF)
+        {
+          line += 3;
+          if (ISDB(DB_BASIC))
+            {
+              if (ebuf->floc.filenm)
+                printf (_("Skipping UTF-8 BOM in makefile '%s'\n"),
+                        ebuf->floc.filenm);
+              else
+                printf (_("Skipping UTF-8 BOM in makefile buffer\n"));
+            }
+        }
+
+      /* If this line is empty, skip it.  */
+      if (line[0] == '\0')
+        continue;
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      linelen = strlen (line);
+#else
+      linelen = ebuf->eol - line;
+      assert (strlen (line) == linelen);
+#endif
+
+      /* Check for a shell command line first.
+         If it is not one, we can stop treating cmd_prefix specially.  */
+      if (line[0] == cmd_prefix)
+        {
+          if (no_targets)
+            /* Ignore the commands in a rule with no targets.  */
+            continue;
+
+          /* If there is no preceding rule line, don't treat this line
+             as a command, even though it begins with a recipe prefix.
+             SunOS 4 make appears to behave this way.  */
+
+          if (filenames != 0)
+            {
+              if (ignoring)
+                /* Yep, this is a shell command, and we don't care.  */
+                continue;
+
+              if (commands_idx == 0)
+                cmds_started = ebuf->floc.lineno;
+
+              /* Append this command line to the line being accumulated.
+                 Skip the initial command prefix character.  */
+              if (linelen + commands_idx > commands_len)
+                {
+                  commands_len = (linelen + commands_idx) * 2;
+                  commands = xrealloc (commands, commands_len);
+                }
+              memcpy (&commands[commands_idx], line + 1, linelen - 1);
+              commands_idx += linelen - 1;
+              commands[commands_idx++] = '\n';
+              continue;
+            }
+        }
+
+      /* This line is not a shell command line.  Don't worry about whitespace.
+         Get more space if we need it; we don't need to preserve the current
+         contents of the buffer.  */
+
+      if (collapsed_length < linelen+1)
+        {
+          collapsed_length = linelen+1;
+          free (collapsed);
+          /* Don't need xrealloc: we don't need to preserve the content.  */
+          collapsed = xmalloc (collapsed_length);
+        }
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      strcpy (collapsed, line);
+      /* Collapse continuation lines.  */
+      collapse_continuations (collapsed);
+      remove_comments (collapsed);
+#else
+      memcpy (collapsed, line, linelen + 1);
+      /* Collapse continuation lines.  */
+      eol = collapse_continuations (collapsed, linelen);
+      assert (strchr (collapsed, '\0') == eol);
+      eol = remove_comments (collapsed, eol);
+      assert (strchr (collapsed, '\0') == eol);
+#endif
+
+      /* Get rid if starting space (including formfeed, vtab, etc.)  */
+      p = collapsed;
+      NEXT_TOKEN (p);
+
+      /* See if this is a variable assignment.  We need to do this early, to
+         allow variables with names like 'ifdef', 'export', 'private', etc.  */
+      p = parse_var_assignment (p, &vmod);
+      if (vmod.assign_v)
+        {
+          struct variable *v;
+          enum variable_origin origin = vmod.override_v ? o_override : o_file;
+
+          /* If we're ignoring then we're done now.  */
+          if (ignoring)
+            {
+              if (vmod.define_v)
+                in_ignored_define = 1;
+              continue;
+            }
+
+          /* Variable assignment ends the previous rule.  */
+          record_waiting_files ();
+
+          if (vmod.undefine_v)
+          {
+            do_undefine (p, origin, ebuf);
+            continue;
+          }
+          else if (vmod.define_v)
+            v = do_define (p IF_WITH_VALUE_LENGTH_PARAM(NULL), origin, ebuf);
+          else
+            v = try_variable_definition (fstart, p IF_WITH_VALUE_LENGTH_PARAM(NULL), origin, 0);
+
+          assert (v != NULL);
+
+          if (vmod.export_v)
+            v->export = v_export;
+          if (vmod.private_v)
+            v->private_var = 1;
+
+          /* This line has been dealt with.  */
+          continue;
+        }
+
+      /* If this line is completely empty, ignore it.  */
+      if (*p == '\0')
+        continue;
+
+      p2 = end_of_token (p);
+      wlen = p2 - p;
+      NEXT_TOKEN (p2);
+
+      /* If we're in an ignored define, skip this line (but maybe get out).  */
+      if (in_ignored_define)
+        {
+          /* See if this is an endef line (plus optional comment).  */
+          if (word1eq ("endef") && STOP_SET (*p2, MAP_COMMENT|MAP_NUL))
+            in_ignored_define = 0;
+
+          continue;
+        }
+
+      /* Check for conditional state changes.  */
+      {
+#ifndef CONFIG_WITH_VALUE_LENGTH
+        int i = conditional_line (p, wlen, fstart);
+#else
+        int i = conditional_line (p, eol, wlen, fstart);
+#endif
+        if (i != -2)
+          {
+            if (i == -1)
+              O (fatal, fstart, _("invalid syntax in conditional"));
+
+            ignoring = i;
+            continue;
+          }
+      }
+
+      /* Nothing to see here... move along.  */
+      if (ignoring)
+        continue;
+
+#ifdef CONFIG_WITH_LOCAL_VARIABLES
+      if (word1eq ("local"))
+        {
+          if (*p2 == '\0')
+            O (error, fstart, _("empty `local' directive"));
+
+          if (strneq (p2, "define", 6)
+              && (ISBLANK (p2[6]) || p2[6] == '\0'))
+            {
+              if (ignoring)
+                in_ignored_define = 1;
+              else
+                {
+                  p2 = next_token (p2 + 6);
+                  if (*p2 == '\0')
+                    O (fatal, fstart, _("empty variable name"));
+
+                  /* Let the variable name be the whole rest of the line,
+                     with trailing blanks stripped (comments have already been
+                     removed), so it could be a complex variable/function
+                     reference that might contain blanks.  */
+                  p = strchr (p2, '\0');
+                  while (ISBLANK (p[-1]))
+                    --p;
+                  do_define (p2 IF_WITH_VALUE_LENGTH_PARAM(p), o_local, ebuf);
+                }
+            }
+          else if (!ignoring
+                   && !try_variable_definition (fstart, p2 IF_WITH_VALUE_LENGTH_PARAM(eol), o_local, 0))
+            O (error, fstart, _("invalid `local' directive"));
+
+          continue;
+        }
+#endif /* CONFIG_WITH_LOCAL_VARIABLES */
+
+#ifdef KMK
+      /* Check for the kBuild language extensions. */
+      if (   wlen > sizeof("kBuild-")
+          && strneq (p, "kBuild-", sizeof("kBuild-") - 1))
+        {
+          krc = eval_kbuild_read_hook (&kdata, fstart, p, wlen, p2, eol, ignoring);
+          if (krc != 42)
+            {
+              if (krc != 0)
+                ON (error, fstart, _("krc=%d"), krc);
+              continue;
+            }
+        }
+#endif /* KMK */
+
+      /* Manage the "export" keyword used outside of variable assignment
+         as well as "unexport".  */
+      if (word1eq ("export") || word1eq ("unexport"))
+        {
+          int exporting = *p == 'u' ? 0 : 1;
+
+          /* Export/unexport ends the previous rule.  */
+          record_waiting_files ();
+
+          /* (un)export by itself causes everything to be (un)exported. */
+          if (*p2 == '\0')
+            export_all_variables = exporting;
+          else
+            {
+              unsigned int l;
+              const char *cp;
+              char *ap;
+
+              /* Expand the line so we can use indirect and constructed
+                 variable names in an (un)export command.  */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+              cp = ap = allocated_variable_expand (p2);
+#else
+              unsigned int buf_len;
+              cp = ap = allocated_variable_expand_3 (p2, eol - p2, NULL, &buf_len);
+#endif
+
+              for (p = find_next_token (&cp, &l); p != 0;
+                   p = find_next_token (&cp, &l))
+                {
+                  struct variable *v = lookup_variable (p, l);
+                  if (v == 0)
+                    v = define_variable_global (p, l, "", o_file, 0, fstart);
+                  v->export = exporting ? v_export : v_noexport;
+                }
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+              free (ap);
+#else
+              recycle_variable_buffer (ap, buf_len);
+#endif
+            }
+          continue;
+        }
+
+      /* Handle the special syntax for vpath.  */
+      if (word1eq ("vpath"))
+        {
+          const char *cp;
+          char *vpat;
+          unsigned int l;
+
+          /* vpath ends the previous rule.  */
+          record_waiting_files ();
+
+          cp = variable_expand (p2);
+          p = find_next_token (&cp, &l);
+          if (p != 0)
+            {
+              vpat = xstrndup (p, l);
+              p = find_next_token (&cp, &l);
+              /* No searchpath means remove all previous
+                 selective VPATH's with the same pattern.  */
+            }
+          else
+            /* No pattern means remove all previous selective VPATH's.  */
+            vpat = 0;
+          construct_vpath_list (vpat, p);
+          free (vpat);
+
+          continue;
+        }
+
+#ifdef CONFIG_WITH_INCLUDEDEP
+      assert (strchr (p2, '\0') == eol);
+      if (word1eq ("includedep") || word1eq ("includedep-queue") || word1eq ("includedep-flush"))
+        {
+          /* We have found an `includedep' line specifying one or more dep files
+             to be read at this point. This include variation does no
+             globbing and do not support multiple names. It's trying to save
+             time by being dead simple as well as ignoring errors. */
+          enum incdep_op op = p[wlen - 1] == 'p'
+                            ? incdep_read_it
+                            : p[wlen - 1] == 'e'
+                            ? incdep_queue : incdep_flush;
+          char *free_me = NULL;
+          unsigned int buf_len;
+          char *name = p2;
+
+          if (memchr (name, '$', eol - name))
+            {
+              unsigned int name_len;
+              free_me = name = allocated_variable_expand_3 (name, eol - name, &name_len, &buf_len);
+              eol = name + name_len;
+              while (ISSPACE (*name))
+                ++name;
+            }
+
+          while (eol > name && ISSPACE (eol[-1]))
+            --eol;
+
+          *eol = '\0';
+          eval_include_dep (name, fstart, op);
+
+          if (free_me)
+            recycle_variable_buffer (free_me, buf_len);
+          continue;
+        }
+#endif /* CONFIG_WITH_INCLUDEDEP */
+
+      /* Handle include and variants.  */
+      if (word1eq ("include") || word1eq ("-include") || word1eq ("sinclude"))
+        {
+          /* We have found an 'include' line specifying a nested
+             makefile to be read at this point.  */
+          struct conditionals *save;
+          struct conditionals new_conditionals;
+          struct nameseq *files;
+          /* "-include" (vs "include") says no error if the file does not
+             exist.  "sinclude" is an alias for this from SGI.  */
+          int noerror = (p[0] != 'i');
+#ifdef CONFIG_WITH_VALUE_LENGTH
+          unsigned int buf_len;
+#endif
+
+          /* Include ends the previous rule.  */
+          record_waiting_files ();
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+          p = allocated_variable_expand (p2);
+#else
+	  p = allocated_variable_expand_3 (p2, eol - p2, NULL, &buf_len);
+#endif
+
+
+          /* If no filenames, it's a no-op.  */
+          if (*p == '\0')
+            {
+#ifndef CONFIG_WITH_VALUE_LENGTH
+              free (p);
+#else
+              recycle_variable_buffer (p, buf_len);
+#endif
+              continue;
+            }
+
+          /* Parse the list of file names.  Don't expand archive references!  */
+          p2 = p;
+          files = PARSE_FILE_SEQ (&p2, struct nameseq, MAP_NUL, NULL,
+                                  PARSEFS_NOAR);
+#ifndef CONFIG_WITH_VALUE_LENGTH
+          free (p);
+#else
+          recycle_variable_buffer (p, buf_len);
+#endif
+
+          /* Save the state of conditionals and start
+             the included makefile with a clean slate.  */
+          save = install_conditionals (&new_conditionals);
+
+          /* Record the rules that are waiting so they will determine
+             the default goal before those in the included makefile.  */
+          record_waiting_files ();
+
+          /* Read each included makefile.  */
+          while (files != 0)
+            {
+              struct nameseq *next = files->next;
+              int flags = (RM_INCLUDED | RM_NO_TILDE
+                           | (noerror ? RM_DONTCARE : 0)
+                           | (set_default ? 0 : RM_NO_DEFAULT_GOAL));
+
+              struct goaldep *d = eval_makefile (files->name, flags);
+
+              if (errno)
+                {
+                  d->error = (unsigned short)errno;
+                  d->floc = *fstart;
+                }
+
+              free_ns (files);
+              files = next;
+            }
+
+          /* Restore conditional state.  */
+          restore_conditionals (save);
+
+          continue;
+        }
+
+      /* Handle the load operations.  */
+      if (word1eq ("load") || word1eq ("-load"))
+        {
+          /* A 'load' line specifies a dynamic object to load.  */
+          struct nameseq *files;
+          int noerror = (p[0] == '-');
+
+          /* Load ends the previous rule.  */
+          record_waiting_files ();
+
+          p = allocated_variable_expand (p2);
+
+          /* If no filenames, it's a no-op.  */
+          if (*p == '\0')
+            {
+              free (p);
+              continue;
+            }
+
+          /* Parse the list of file names.
+             Don't expand archive references or strip "./"  */
+          p2 = p;
+          files = PARSE_FILE_SEQ (&p2, struct nameseq, MAP_NUL, NULL,
+                                  PARSEFS_NOAR);
+          free (p);
+
+          /* Load each file.  */
+          while (files != 0)
+            {
+              struct nameseq *next = files->next;
+              const char *name = files->name;
+              struct goaldep *deps;
+              int r;
+
+              /* Load the file.  0 means failure.  */
+              r = load_file (&ebuf->floc, &name, noerror);
+              if (! r && ! noerror)
+                OS (fatal, &ebuf->floc, _("%s: failed to load"), name);
+
+              free_ns (files);
+              files = next;
+
+              /* Return of -1 means a special load: don't rebuild it.  */
+              if (r == -1)
+                continue;
+
+              /* It succeeded, so add it to the list "to be rebuilt".  */
+              deps = alloc_goaldep ();
+              deps->next = read_files;
+              read_files = deps;
+              deps->file = lookup_file (name);
+              if (deps->file == 0)
+                deps->file = enter_file (name);
+              deps->file->loaded = 1;
+            }
+
+          continue;
+        }
+
+      /* This line starts with a tab but was not caught above because there
+         was no preceding target, and the line might have been usable as a
+         variable definition.  But now we know it is definitely lossage.  */
+      if (line[0] == cmd_prefix)
+        O (fatal, fstart, _("recipe commences before first target"));
+
+      /* This line describes some target files.  This is complicated by
+         the existence of target-specific variables, because we can't
+         expand the entire line until we know if we have one or not.  So
+         we expand the line word by word until we find the first ':',
+         then check to see if it's a target-specific variable.
+
+         In this algorithm, 'lb_next' will point to the beginning of the
+         unexpanded parts of the input buffer, while 'p2' points to the
+         parts of the expanded buffer we haven't searched yet. */
+
+      {
+        enum make_word_type wtype;
+        char *cmdleft, *semip, *lb_next;
+        unsigned int plen = 0;
+        char *colonp;
+        const char *end, *beg; /* Helpers for whitespace stripping. */
+
+        /* Record the previous rule.  */
+
+        record_waiting_files ();
+        tgts_started = fstart->lineno;
+
+        /* Search the line for an unquoted ; that is not after an
+           unquoted #.  */
+        cmdleft = find_char_unquote (line, MAP_SEMI|MAP_COMMENT|MAP_VARIABLE IF_WITH_VALUE_LENGTH_PARAM(ebuf->eol - line));
+        if (cmdleft != 0 && *cmdleft == '#')
+          {
+            /* We found a comment before a semicolon.  */
+            *cmdleft = '\0';
+            cmdleft = 0;
+          }
+        else if (cmdleft != 0)
+          /* Found one.  Cut the line short there before expanding it.  */
+          *(cmdleft++) = '\0';
+        semip = cmdleft;
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+        collapse_continuations (line);
+#else
+        collapse_continuations (line, strlen (line)); /**@todo fix this */
+#endif
+
+        /* We can't expand the entire line, since if it's a per-target
+           variable we don't want to expand it.  So, walk from the
+           beginning, expanding as we go, and looking for "interesting"
+           chars.  The first word is always expandable.  */
+        wtype = get_next_mword (line, NULL, &lb_next, &wlen);
+        switch (wtype)
+          {
+          case w_eol:
+            if (cmdleft != 0)
+              O (fatal, fstart, _("missing rule before recipe"));
+            /* This line contained something but turned out to be nothing
+               but whitespace (a comment?).  */
+            continue;
+
+          case w_colon:
+          case w_dcolon:
+            /* We accept and ignore rules without targets for
+               compatibility with SunOS 4 make.  */
+            no_targets = 1;
+            continue;
+
+          default:
+            break;
+          }
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+        p2 = variable_expand_string (NULL, lb_next, wlen);
+#else
+        p2 = variable_expand_string_2 (NULL, lb_next, wlen, &eol);
+        assert (strchr (p2, '\0') == eol);
+#endif
+
+        while (1)
+          {
+            lb_next += wlen;
+            if (cmdleft == 0)
+              {
+                /* Look for a semicolon in the expanded line.  */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+                cmdleft = find_char_unquote (p2, MAP_SEMI);
+#else
+                cmdleft = find_char_unquote_0 (p2, ';', MAP_SEMI, &eol); 
+#endif
+
+                if (cmdleft != 0)
+                  {
+                    unsigned long p2_off = p2 - variable_buffer;
+                    unsigned long cmd_off = cmdleft - variable_buffer;
+#ifndef CONFIG_WITH_VALUE_LENGTH
+                    char *pend = p2 + strlen (p2);
+#endif
+
+                    /* Append any remnants of lb, then cut the line short
+                       at the semicolon.  */
+                    *cmdleft = '\0';
+
+                    /* One school of thought says that you shouldn't expand
+                       here, but merely copy, since now you're beyond a ";"
+                       and into a command script.  However, the old parser
+                       expanded the whole line, so we continue that for
+                       backwards-compatibility.  Also, it wouldn't be
+                       entirely consistent, since we do an unconditional
+                       expand below once we know we don't have a
+                       target-specific variable. */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+                    (void)variable_expand_string (pend, lb_next, (long)-1);
+                    lb_next += strlen (lb_next);
+#else
+                    tmp_len = strlen (lb_next);
+                    variable_expand_string_2 (eol, lb_next, tmp_len, &eol);
+                    lb_next += tmp_len;
+#endif
+                    p2 = variable_buffer + p2_off;
+                    cmdleft = variable_buffer + cmd_off + 1;
+                  }
+              }
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+            colonp = find_char_unquote (p2, MAP_COLON);
+#else
+            colonp = find_char_unquote_0 (p2, ':', MAP_COLON, &eol);
+#endif
+#ifdef HAVE_DOS_PATHS
+            /* The drive spec brain-damage strikes again...  */
+            /* Note that the only separators of targets in this context
+               are whitespace and a left paren.  If others are possible,
+               they should be added to the string in the call to index.  */
+            while (colonp && (colonp[1] == '/' || colonp[1] == '\\') &&
+                   colonp > p2 && isalpha ((unsigned char)colonp[-1]) &&
+                   (colonp == p2 + 1 || strchr (" \t(", colonp[-2]) != 0))
+# ifndef CONFIG_WITH_VALUE_LENGTH
+              colonp = find_char_unquote (colonp + 1, MAP_COLON);
+# else
+              colonp = find_char_unquote_0 (colonp + 1, ':', MAP_COLON, &eol);
+# endif
+#endif
+            if (colonp != 0)
+              break;
+
+            wtype = get_next_mword (lb_next, NULL, &lb_next, &wlen);
+            if (wtype == w_eol)
+              break;
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+            p2 += strlen (p2);
+            *(p2++) = ' ';
+            p2 = variable_expand_string (p2, lb_next, wlen);
+#else
+            *(eol++) = ' ';
+            p2 = variable_expand_string_2 (eol, lb_next, wlen, &eol);
+#endif
+            /* We don't need to worry about cmdleft here, because if it was
+               found in the variable_buffer the entire buffer has already
+               been expanded... we'll never get here.  */
+          }
+
+        p2 = next_token (variable_buffer);
+
+        /* If the word we're looking at is EOL, see if there's _anything_
+           on the line.  If not, a variable expanded to nothing, so ignore
+           it.  If so, we can't parse this line so punt.  */
+        if (wtype == w_eol)
+          {
+            if (*p2 == '\0')
+              continue;
+
+            /* There's no need to be ivory-tower about this: check for
+               one of the most common bugs found in makefiles...  */
+            if (cmd_prefix == '\t' && strneq (line, "        ", 8))
+              O (fatal, fstart, _("missing separator (did you mean TAB instead of 8 spaces?)"));
+            else
+              O (fatal, fstart, _("missing separator"));
+          }
+
+        /* Make the colon the end-of-string so we know where to stop
+           looking for targets.  Start there again once we're done.  */
+        *colonp = '\0';
+        filenames = PARSE_SIMPLE_SEQ (&p2, struct nameseq);
+        *colonp = ':';
+        p2 = colonp;
+
+        if (!filenames)
+          {
+            /* We accept and ignore rules without targets for
+               compatibility with SunOS 4 make.  */
+            no_targets = 1;
+            continue;
+          }
+        /* This should never be possible; we handled it above.  */
+        assert (*p2 != '\0');
+        ++p2;
+
+        /* Is this a one-colon or two-colon entry?  */
+        two_colon = *p2 == ':';
+        if (two_colon)
+          p2++;
+
+        /* Test to see if it's a target-specific variable.  Copy the rest
+           of the buffer over, possibly temporarily (we'll expand it later
+           if it's not a target-specific variable).  PLEN saves the length
+           of the unparsed section of p2, for later.  */
+        if (*lb_next != '\0')
+          {
+            unsigned int l = p2 - variable_buffer;
+            plen = strlen (p2);
+            variable_buffer_output (p2+plen, lb_next, strlen (lb_next)+1);
+            p2 = variable_buffer + l;
+          }
+
+        p2 = parse_var_assignment (p2, &vmod);
+        if (vmod.assign_v)
+          {
+            /* If there was a semicolon found, add it back, plus anything
+               after it.  */
+            if (semip)
+              {
+                unsigned int l = p2 - variable_buffer;
+                *(--semip) = ';';
+#ifndef CONFIG_WITH_VALUE_LENGTH
+                collapse_continuations (semip);
+#else
+                collapse_continuations (semip, strlen(semip)); /** @todo fix this */
+#endif
+                variable_buffer_output (p2 + strlen (p2),
+                                        semip, strlen (semip)+1);
+                p2 = variable_buffer + l;
+              }
+            record_target_var (filenames, p2,
+                               vmod.override_v ? o_override : o_file,
+                               &vmod, fstart);
+            filenames = 0;
+            continue;
+          }
+
+        /* This is a normal target, _not_ a target-specific variable.
+           Unquote any = in the dependency list.  */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+        find_char_unquote (lb_next, MAP_EQUALS);
+#else
+        {
+          char *tmp_eos = strchr(lb_next, '\0'); /** @todo see if we can optimize this away... */
+          find_char_unquote_0 (lb_next, '=', MAP_EQUALS, &tmp_eos);
+        }
+#endif
+
+        /* Remember the command prefix for this target.  */
+        prefix = cmd_prefix;
+
+        /* We have some targets, so don't ignore the following commands.  */
+        no_targets = 0;
+
+        /* Expand the dependencies, etc.  */
+        if (*lb_next != '\0')
+          {
+            unsigned int l = p2 - variable_buffer;
+#ifndef CONFIG_WITH_VALUE_LENGTH
+            (void) variable_expand_string (p2 + plen, lb_next, (long)-1);
+#else
+            char *eos;
+            (void) variable_expand_string_2 (p2 + plen, lb_next, (long)-1, &eos);
+#endif
+            p2 = variable_buffer + l;
+
+            /* Look for a semicolon in the expanded line.  */
+            if (cmdleft == 0)
+              {
+#ifndef CONFIG_WITH_VALUE_LENGTH
+                cmdleft = find_char_unquote (p2, MAP_SEMI);
+#else
+                cmdleft = find_char_unquote_0 (p2, ';', MAP_SEMI, &eos);
+#endif
+                if (cmdleft != 0)
+                  *(cmdleft++) = '\0';
+              }
+          }
+
+        /* Is this a static pattern rule: 'target: %targ: %dep; ...'?  */
+        p = strchr (p2, ':');
+        while (p != 0 && p[-1] == '\\')
+          {
+            char *q = &p[-1];
+            int backslash = 0;
+            while (*q-- == '\\')
+              backslash = !backslash;
+            if (backslash)
+              p = strchr (p + 1, ':');
+            else
+              break;
+          }
+#ifdef _AMIGA
+        /* Here, the situation is quite complicated. Let's have a look
+           at a couple of targets:
+
+           install: dev:make
+
+           dev:make: make
+
+           dev:make:: xyz
+
+           The rule is that it's only a target, if there are TWO :'s
+           OR a space around the :.
+        */
+        if (p && !(ISSPACE (p[1]) || !p[1] || ISSPACE (p[-1])))
+          p = 0;
+#endif
+#ifdef HAVE_DOS_PATHS
+        {
+          int check_again;
+          do {
+            check_again = 0;
+            /* For DOS-style paths, skip a "C:\..." or a "C:/..." */
+            if (p != 0 && (p[1] == '\\' || p[1] == '/') &&
+                isalpha ((unsigned char)p[-1]) &&
+                (p == p2 + 1 || strchr (" \t:(", p[-2]) != 0)) {
+              p = strchr (p + 1, ':');
+              check_again = 1;
+            }
+          } while (check_again);
+        }
+#endif
+        if (p != 0)
+          {
+            struct nameseq *target;
+            target = PARSE_FILE_SEQ (&p2, struct nameseq, MAP_COLON, NULL,
+                                     PARSEFS_NOGLOB);
+            ++p2;
+            if (target == 0)
+              O (fatal, fstart, _("missing target pattern"));
+            else if (target->next != 0)
+              OS (fatal, fstart, _("multiple target patterns (target '%s')"), target->name); /* bird added target */
+            pattern_percent = find_percent_cached (&target->name);
+            pattern = target->name;
+            if (pattern_percent == 0)
+              OS (fatal, fstart, _("target pattern contains no '%%' (target '%s')"), target->name); /* bird added target */
+            free_ns (target);
+          }
+        else
+          pattern = 0;
+
+        /* Strip leading and trailing whitespaces. */
+        beg = p2;
+        end = beg + strlen (beg) - 1;
+        strip_whitespace (&beg, &end);
+
+        /* Put all the prerequisites here; they'll be parsed later.  */
+        if (beg <= end && *beg != '\0')
+          depstr = xstrndup (beg, end - beg + 1);
+        else
+          depstr = 0;
+
+        commands_idx = 0;
+        if (cmdleft != 0)
+          {
+            /* Semicolon means rest of line is a command.  */
+            unsigned int l = strlen (cmdleft);
+
+            cmds_started = fstart->lineno;
+
+            /* Add this command line to the buffer.  */
+            if (l + 2 > commands_len)
+              {
+                commands_len = (l + 2) * 2;
+                commands = xrealloc (commands, commands_len);
+              }
+            memcpy (commands, cmdleft, l);
+            commands_idx += l;
+            commands[commands_idx++] = '\n';
+          }
+
+        /* Determine if this target should be made default. We used to do
+           this in record_files() but because of the delayed target recording
+           and because preprocessor directives are legal in target's commands
+           it is too late. Consider this fragment for example:
+
+           foo:
+
+           ifeq ($(.DEFAULT_GOAL),foo)
+              ...
+           endif
+
+           Because the target is not recorded until after ifeq directive is
+           evaluated the .DEFAULT_GOAL does not contain foo yet as one
+           would expect. Because of this we have to move the logic here.  */
+
+        if (set_default && default_goal_var->value[0] == '\0')
+          {
+            struct dep *d;
+            struct nameseq *t = filenames;
+
+            for (; t != 0; t = t->next)
+              {
+                int reject = 0;
+                const char *name = t->name;
+
+                /* We have nothing to do if this is an implicit rule. */
+                if (strchr (name, '%') != 0)
+                  break;
+
+                /* See if this target's name does not start with a '.',
+                   unless it contains a slash.  */
+                if (*name == '.' && strchr (name, '/') == 0
+#ifdef HAVE_DOS_PATHS
+                    && strchr (name, '\\') == 0
+#endif
+                    )
+                  continue;
+
+
+                /* If this file is a suffix, don't let it be
+                   the default goal file.  */
+                for (d = suffix_file->deps; d != 0; d = d->next)
+                  {
+                    register struct dep *d2;
+                    if (*dep_name (d) != '.' && streq (name, dep_name (d)))
+                      {
+                        reject = 1;
+                        break;
+                      }
+                    for (d2 = suffix_file->deps; d2 != 0; d2 = d2->next)
+                      {
+#ifndef CONFIG_WITH_STRCACHE2
+                        unsigned int l = strlen (dep_name (d2));
+#else
+                        unsigned int l = strcache2_get_len (&file_strcache, dep_name (d2));
+#endif
+                        if (!strneq (name, dep_name (d2), l))
+                          continue;
+                        if (streq (name + l, dep_name (d)))
+                          {
+                            reject = 1;
+                            break;
+                          }
+                      }
+
+                    if (reject)
+                      break;
+                  }
+
+                if (!reject)
+                  {
+                    define_variable_global (".DEFAULT_GOAL", 13, t->name,
+                                            o_file, 0, NILF);
+                    break;
+                  }
+              }
+          }
+
+        continue;
+      }
+
+      /* We get here except in the case that we just read a rule line.
+         Record now the last rule we read, so following spurious
+         commands are properly diagnosed.  */
+      record_waiting_files ();
+    }
+
+#undef word1eq
+
+  if (conditionals->if_cmds)
+    O (fatal, fstart, _("missing 'endif'"));
+#ifdef KMK
+
+  if (kdata != NULL)
+    O (fatal, fstart, _("missing `kBuild-endef-*'"));
+#endif
+
+  /* At eof, record the last rule.  */
+  record_waiting_files ();
+
+  free (collapsed);
+  free (commands);
+}
+
+
+/* Remove comments from LINE.
+   This is done by copying the text at LINE onto itself.  */
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+static void
+remove_comments (char *line)
+#else
+static char *
+remove_comments (char *line, char *eos)
+#endif
+{
+  char *comment;
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  comment = find_char_unquote (line, MAP_COMMENT);
+
+  if (comment != 0)
+    /* Cut off the line at the #.  */
+    *comment = '\0';
+#else
+  comment = find_char_unquote_0 (line, '#', MAP_COMMENT, &eos);
+  if (comment)
+    {
+      /* Cut off the line at the #.  */
+      *comment = '\0';
+      return comment;
+    }
+  return eos;
+#endif
+}
+
+/* Execute a 'undefine' directive.
+   The undefine line has already been read, and NAME is the name of
+   the variable to be undefined. */
+
+static void
+do_undefine (char *name, enum variable_origin origin, struct ebuffer *ebuf)
+{
+  char *p, *var;
+
+  /* Expand the variable name and find the beginning (NAME) and end.  */
+  var = allocated_variable_expand (name);
+  name = next_token (var);
+  if (*name == '\0')
+    O (fatal, &ebuf->floc, _("empty variable name"));
+  p = name + strlen (name) - 1;
+  while (p > name && ISBLANK (*p))
+    --p;
+  p[1] = '\0';
+
+  undefine_variable_global (name, p - name + 1, origin);
+  free (var);
+}
+
+/* Execute a 'define' directive.
+   The first line has already been read, and NAME is the name of
+   the variable to be defined.  The following lines remain to be read.  */
+
+static struct variable *
+do_define (char *name IF_WITH_VALUE_LENGTH_PARAM(char *eos),
+           enum variable_origin origin, struct ebuffer *ebuf)
+{
+  struct variable *v;
+  struct variable var;
+  floc defstart;
+  int nlevels = 1;
+  unsigned int length = 100;
+  char *definition = xmalloc (length);
+  unsigned int idx = 0;
+  char *p, *n;
+
+  defstart = ebuf->floc;
+
+  p = parse_variable_definition (name, &var);
+  if (p == NULL)
+    /* No assignment token, so assume recursive.  */
+    var.flavor = f_recursive;
+  else
+    {
+      if (var.value[0] != '\0')
+        O (error, &defstart, _("extraneous text after 'define' directive"));
+
+      /* Chop the string before the assignment token to get the name.  */
+#ifndef CONFIG_WITH_STRCACHE2
+      var.name[var.length] = '\0';
+#else
+      assert (!strcache2_is_cached (&variable_strcache, var.name));
+      ((char *)var.name)[var.length] = '\0';
+#endif
+    }
+
+  /* Expand the variable name and find the beginning (NAME) and end.  */
+  n = allocated_variable_expand (name);
+  name = next_token (n);
+  if (name[0] == '\0')
+    O (fatal, &defstart, _("empty variable name"));
+  p = name + strlen (name) - 1;
+  while (p > name && ISBLANK (*p))
+    --p;
+  p[1] = '\0';
+
+  /* Now read the value of the variable.  */
+  while (1)
+    {
+      unsigned int len;
+      char *line;
+      long nlines = readline (ebuf);
+
+      /* If there is nothing left to be eval'd, there's no 'endef'!!  */
+      if (nlines < 0)
+        O (fatal, &defstart, _("missing 'endef', unterminated 'define'"));
+
+      ebuf->floc.lineno += nlines;
+      line = ebuf->buffer;
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      collapse_continuations (line);
+#else
+      ebuf->eol = collapse_continuations (line, ebuf->eol - line);
+#endif
+
+      /* If the line doesn't begin with a tab, test to see if it introduces
+         another define, or ends one.  Stop if we find an 'endef' */
+      if (line[0] != cmd_prefix)
+        {
+          p = next_token (line);
+#ifndef CONFIG_WITH_VALUE_LENGTH
+          len = strlen (p);
+#else
+          len = ebuf->eol - p;
+          assert (len == strlen (p));
+#endif
+
+          /* If this is another 'define', increment the level count.  */
+          if ((len == 6 || (len > 6 && ISBLANK (p[6])))
+              && strneq (p, "define", 6))
+            ++nlevels;
+
+          /* If this is an 'endef', decrement the count.  If it's now 0,
+             we've found the last one.  */
+          else if ((len == 5 || (len > 5 && ISBLANK (p[5])))
+                   && strneq (p, "endef", 5))
+            {
+              p += 5;
+#ifndef CONFIG_WITH_VALUE_LENGTH
+              remove_comments (p);
+#else
+              ebuf->eol = remove_comments (p, ebuf->eol);
+#endif
+              if (*(next_token (p)) != '\0')
+                O (error, &ebuf->floc,
+                   _("extraneous text after 'endef' directive"));
+
+              if (--nlevels == 0)
+                break;
+            }
+        }
+
+      /* Add this line to the variable definition.  */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      len = strlen (line);
+#else
+      len = ebuf->eol - line;
+      assert (len == strlen (line));
+#endif
+      if (idx + len + 1 > length)
+        {
+          length = (idx + len) * 2;
+          definition = xrealloc (definition, length + 1);
+        }
+
+      memcpy (&definition[idx], line, len);
+      idx += len;
+      /* Separate lines with a newline.  */
+      definition[idx++] = '\n';
+    }
+
+  /* We've got what we need; define the variable.  */
+  if (idx == 0)
+    definition[0] = '\0';
+  else
+    definition[idx - 1] = '\0';
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  v = do_variable_definition (&defstart, name,
+                              definition, origin, var.flavor, 0);
+#else
+  v = do_variable_definition_2 (&defstart, name, definition,
+                                idx ? idx - 1 : idx,  var.flavor == f_simple,
+                                0 /* free_value */, origin, var.flavor,
+                                0 /*target_var*/);
+#endif
+  free (definition);
+  free (n);
+  return (v);
+}
+
+/* Interpret conditional commands "ifdef", "ifndef", "ifeq",
+   "ifneq", "if1of", "ifn1of", "else" and "endif".
+   LINE is the input line, with the command as its first word.
+
+   FILENAME and LINENO are the filename and line number in the
+   current makefile.  They are used for error messages.
+
+   Value is -2 if the line is not a conditional at all,
+   -1 if the line is an invalid conditional,
+   0 if following text should be interpreted,
+   1 if following text should be ignored.  */
+
+static int
+conditional_line (char *line IF_WITH_VALUE_LENGTH_PARAM(char *eol), int len, const floc *flocp)
+{
+  const char *cmdname;
+  enum { c_ifdef, c_ifndef, c_ifeq, c_ifneq,
+#ifdef CONFIG_WITH_SET_CONDITIONALS
+    c_if1of, c_ifn1of,
+#endif
+#ifdef CONFIG_WITH_IF_CONDITIONALS
+    c_ifcond,
+#endif
+    c_else, c_endif
+  } cmdtype;
+  unsigned int i;
+  unsigned int o;
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  assert (strchr (line, '\0') == eol);
+#endif
+
+  /* Compare a word, both length and contents. */
+#define word1eq(s)      (len == CSTRLEN (s) && strneq (s, line, CSTRLEN (s)))
+#define chkword(s, t)   if (word1eq (s)) { cmdtype = (t); cmdname = (s); }
+
+  /* Make sure this line is a conditional.  */
+  chkword ("ifdef", c_ifdef)
+  else chkword ("ifndef", c_ifndef)
+  else chkword ("ifeq", c_ifeq)
+  else chkword ("ifneq", c_ifneq)
+#ifdef CONFIG_WITH_SET_CONDITIONALS
+  else chkword ("if1of", c_if1of)
+  else chkword ("ifn1of", c_ifn1of)
+#endif
+#ifdef CONFIG_WITH_IF_CONDITIONALS
+  else chkword ("if", c_ifcond)
+#endif
+  else chkword ("else", c_else)
+  else chkword ("endif", c_endif)
+  else
+    return -2;
+
+  /* Found one: skip past it and any whitespace after it.  */
+  line += len;
+  NEXT_TOKEN (line);
+
+#define EXTRATEXT() OS (error, flocp, _("extraneous text after '%s' directive"), cmdname)
+#define EXTRACMD()  OS (fatal, flocp, _("extraneous '%s'"), cmdname)
+
+  /* An 'endif' cannot contain extra text, and reduces the if-depth by 1  */
+  if (cmdtype == c_endif)
+    {
+      if (*line != '\0')
+        EXTRATEXT ();
+
+      if (!conditionals->if_cmds)
+        EXTRACMD ();
+
+      --conditionals->if_cmds;
+
+      goto DONE;
+    }
+
+  /* An 'else' statement can either be simple, or it can have another
+     conditional after it.  */
+  if (cmdtype == c_else)
+    {
+      const char *p;
+
+      if (!conditionals->if_cmds)
+        EXTRACMD ();
+
+      o = conditionals->if_cmds - 1;
+
+      if (conditionals->seen_else[o])
+        O (fatal, flocp, _("only one 'else' per conditional"));
+
+      /* Change the state of ignorance.  */
+      switch (conditionals->ignoring[o])
+        {
+          case 0:
+            /* We've just been interpreting.  Never do it again.  */
+            conditionals->ignoring[o] = 2;
+            break;
+          case 1:
+            /* We've never interpreted yet.  Maybe this time!  */
+            conditionals->ignoring[o] = 0;
+            break;
+        }
+
+      /* It's a simple 'else'.  */
+      if (*line == '\0')
+        {
+          conditionals->seen_else[o] = 1;
+          goto DONE;
+        }
+
+      /* The 'else' has extra text.  That text must be another conditional
+         and cannot be an 'else' or 'endif'.  */
+
+      /* Find the length of the next word.  */
+      for (p = line+1; ! STOP_SET (*p, MAP_SPACE|MAP_NUL); ++p)
+        ;
+      len = p - line;
+
+      /* If it's 'else' or 'endif' or an illegal conditional, fail.  */
+      if (word1eq ("else") || word1eq ("endif")
+          || conditional_line (line IF_WITH_VALUE_LENGTH_PARAM(eol), len, flocp) < 0)
+        EXTRATEXT ();
+      else
+        {
+          /* conditional_line() created a new level of conditional.
+             Raise it back to this level.  */
+          if (conditionals->ignoring[o] < 2)
+            conditionals->ignoring[o] = conditionals->ignoring[o+1];
+          --conditionals->if_cmds;
+        }
+
+      goto DONE;
+    }
+
+#ifndef KMK
+  if (conditionals->allocated == 0)
+    {
+      conditionals->allocated = 5;
+      conditionals->ignoring = xmalloc (conditionals->allocated);
+      conditionals->seen_else = xmalloc (conditionals->allocated);
+    }
+#endif
+
+  o = conditionals->if_cmds++;
+  if (conditionals->if_cmds > conditionals->allocated)
+    {
+#ifdef KMK
+      if (conditionals->allocated <= sizeof (conditionals->ignoring_first))
+        {
+          assert (conditionals->allocated == sizeof (conditionals->ignoring_first));
+          conditionals->allocated += 16;
+          conditionals->ignoring = xmalloc (conditionals->allocated);
+          memcpy (conditionals->ignoring, conditionals->ignoring_first,
+                  sizeof (conditionals->ignoring_first));
+          conditionals->seen_else = xmalloc (conditionals->allocated);
+          memcpy (conditionals->seen_else, conditionals->seen_else_first,
+                  sizeof (conditionals->seen_else_first));
+        }
+      else
+        {
+          conditionals->allocated *= 2;
+#else  /* !KMK */
+          conditionals->allocated += 5;
+#endif /* !KMK */
+          conditionals->ignoring = xrealloc (conditionals->ignoring,
+                                             conditionals->allocated);
+          conditionals->seen_else = xrealloc (conditionals->seen_else,
+                                              conditionals->allocated);
+#ifdef KMK
+        }
+#endif
+    }
+
+  /* Record that we have seen an 'if...' but no 'else' so far.  */
+  conditionals->seen_else[o] = 0;
+
+  /* Search through the stack to see if we're already ignoring.  */
+  for (i = 0; i < o; ++i)
+    if (conditionals->ignoring[i])
+      {
+        /* We are already ignoring, so just push a level to match the next
+           "else" or "endif", and keep ignoring.  We don't want to expand
+           variables in the condition.  */
+        conditionals->ignoring[o] = 1;
+        return 1;
+      }
+
+  if (cmdtype == c_ifdef || cmdtype == c_ifndef)
+    {
+      char *var;
+      struct variable *v;
+      char *p;
+
+      /* Expand the thing we're looking up, so we can use indirect and
+         constructed variable names.  */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      var = allocated_variable_expand (line);
+#else
+      var = variable_expand_string_2 (NULL, line, eol - line, &p);
+#endif
+
+      /* Make sure there's only one variable name to test.  */
+      p = end_of_token (var);
+      i = p - var;
+      NEXT_TOKEN (p);
+      if (*p != '\0')
+        return -1;
+
+      var[i] = '\0';
+      v = lookup_variable (var, i);
+
+      conditionals->ignoring[o] =
+        ((v != 0 && *v->value != '\0') == (cmdtype == c_ifndef));
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      free (var);
+#endif
+    }
+#ifdef CONFIG_WITH_IF_CONDITIONALS
+  else if (cmdtype == c_ifcond)
+    {
+      int rval = expr_eval_if_conditionals (line, flocp);
+      if (rval == -1)
+          return rval;
+      conditionals->ignoring[o] = rval;
+    }
+#endif
+  else
+    {
+#ifdef CONFIG_WITH_SET_CONDITIONALS
+      /* "ifeq", "ifneq", "if1of" or "ifn1of". */
+#else
+      /* "ifeq" or "ifneq".  */
+#endif
+      char *s1, *s2;
+      unsigned int l;
+      char termin = *line == '(' ? ',' : *line;
+#ifdef CONFIG_WITH_VALUE_LENGTH
+      char *s1_end, *s2_end;
+#endif
+
+      if (termin != ',' && termin != '"' && termin != '\'')
+        return -1;
+
+      s1 = ++line;
+      /* Find the end of the first string.  */
+      if (termin == ',')
+        {
+          int count = 0;
+          for (; *line != '\0'; ++line)
+            if (*line == '(')
+              ++count;
+            else if (*line == ')')
+              --count;
+            else if (*line == ',' && count <= 0)
+              break;
+        }
+      else
+        while (*line != '\0' && *line != termin)
+          ++line;
+
+      if (*line == '\0')
+        return -1;
+
+      if (termin == ',')
+        {
+          /* Strip blanks after the first string.  */
+          char *p = line++;
+          while (ISBLANK (p[-1]))
+            --p;
+          *p = '\0';
+#ifdef CONFIG_WITH_VALUE_LENGTH
+          l = p - s1;
+#endif
+        }
+      else
+        {
+#ifdef CONFIG_WITH_VALUE_LENGTH
+          l = line - s1;
+#endif
+          *line++ = '\0';
+        }
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      s2 = variable_expand (s1);
+      /* We must allocate a new copy of the expanded string because
+         variable_expand re-uses the same buffer.  */
+      l = strlen (s2);
+      s1 = alloca (l + 1);
+      memcpy (s1, s2, l + 1);
+#else
+      s1 = variable_expand_string_2 (NULL, s1, l, &s1_end);
+#endif
+
+      if (termin != ',')
+        /* Find the start of the second string.  */
+        NEXT_TOKEN (line);
+
+      termin = termin == ',' ? ')' : *line;
+      if (termin != ')' && termin != '"' && termin != '\'')
+        return -1;
+
+      /* Find the end of the second string.  */
+      if (termin == ')')
+        {
+          int count = 0;
+          s2 = next_token (line);
+          for (line = s2; *line != '\0'; ++line)
+            {
+              if (*line == '(')
+                ++count;
+              else if (*line == ')')
+                {
+                  if (count <= 0)
+                    break;
+                  else
+                    --count;
+                }
+            }
+        }
+      else
+        {
+          ++line;
+          s2 = line;
+          while (*line != '\0' && *line != termin)
+            ++line;
+        }
+
+      if (*line == '\0')
+        return -1;
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+      l = line - s2;
+#endif
+      *(line++) = '\0';
+      NEXT_TOKEN (line);
+      if (*line != '\0')
+        EXTRATEXT ();
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      s2 = variable_expand (s2);
+#else
+      s2 = variable_expand_string_2 (s1_end + 1, s2, l, &s2_end);
+      if (s2 != s1_end + 1)
+        s1 += s2 - s1_end - 1;  /* the variable buffer was reallocated */
+#endif
+#ifdef CONFIG_WITH_SET_CONDITIONALS
+      if (cmdtype == c_if1of || cmdtype == c_ifn1of)
+        {
+          const char *s1_cur;
+          unsigned int s1_len;
+          const char *s1_iterator = s1;
+
+          conditionals->ignoring[o] = (cmdtype == c_if1of); /* if not found */
+          while ((s1_cur = find_next_token (&s1_iterator, &s1_len)) != 0)
+            {
+              const char *s2_cur;
+              unsigned int s2_len;
+              const char *s2_iterator = s2;
+              while ((s2_cur = find_next_token (&s2_iterator, &s2_len)) != 0)
+                if (s2_len == s1_len
+                 && strneq (s2_cur, s1_cur, s1_len) )
+                  {
+                    conditionals->ignoring[o] = (cmdtype != c_if1of); /* found */
+                    break;
+                  }
+            }
+        }
+      else
+        conditionals->ignoring[o] = (streq (s1, s2) == (cmdtype == c_ifneq));
+#else
+      conditionals->ignoring[o] = (streq (s1, s2) == (cmdtype == c_ifneq));
+#endif
+    }
+
+ DONE:
+  /* Search through the stack to see if we're ignoring.  */
+  for (i = 0; i < conditionals->if_cmds; ++i)
+    if (conditionals->ignoring[i])
+      return 1;
+  return 0;
+}
+
+/* Record target-specific variable values for files FILENAMES.
+   TWO_COLON is nonzero if a double colon was used.
+
+   The links of FILENAMES are freed, and so are any names in it
+   that are not incorporated into other data structures.
+
+   If the target is a pattern, add the variable to the pattern-specific
+   variable value list.  */
+
+static void
+record_target_var (struct nameseq *filenames, char *defn,
+                   enum variable_origin origin, struct vmodifiers *vmod,
+                   const floc *flocp)
+{
+  struct nameseq *nextf;
+  struct variable_set_list *global;
+
+  global = current_variable_set_list;
+
+  /* If the variable is an append version, store that but treat it as a
+     normal recursive variable.  */
+
+  for (; filenames != 0; filenames = nextf)
+    {
+      struct variable *v;
+      const char *name = filenames->name;
+      const char *percent;
+      struct pattern_var *p;
+#ifdef CONFIG_WITH_VALUE_LENGTH
+      const char *fname;
+#endif
+
+      nextf = filenames->next;
+      free_ns (filenames);
+
+      /* If it's a pattern target, then add it to the pattern-specific
+         variable list.  */
+      percent = find_percent_cached (&name);
+      if (percent)
+        {
+          /* Get a reference for this pattern-specific variable struct.  */
+          p = create_pattern_var (name, percent);
+          p->variable.fileinfo = *flocp;
+          /* I don't think this can fail since we already determined it was a
+             variable definition.  */
+          v = assign_variable_definition (&p->variable, defn IF_WITH_VALUE_LENGTH_PARAM(NULL));
+          assert (v != 0);
+
+          v->origin = origin;
+#ifndef CONFIG_WITH_VALUE_LENGTH
+          if (v->flavor == f_simple)
+            v->value = allocated_variable_expand (v->value);
+          else
+            v->value = xstrdup (v->value);
+#else
+          v->value_length = strlen (v->value);
+          if (v->flavor == f_simple)
+            v->value = allocated_variable_expand_2 (v->value, v->value_length, &v->value_length);
+          else
+            v->value = (char *)memcpy (xmalloc (v->value_length + 1), v->value, v->value_length + 1);
+          v->value_alloc_len = v->value_length + 1;
+#endif
+        }
+      else
+        {
+          struct file *f;
+
+          /* Get a file reference for this file, and initialize it.
+             We don't want to just call enter_file() because that allocates a
+             new entry if the file is a double-colon, which we don't want in
+             this situation.  */
+#ifndef CONFIG_WITH_STRCACHE2
+          f = lookup_file (name);
+          if (!f)
+            f = enter_file (strcache_add (name));
+#else  /* CONFIG_WITH_STRCACHE2 */
+           /* XXX: this is probably already a cached string. */
+          fname = strcache_add (name);
+          f = lookup_file_cached (fname);
+          if (!f)
+            f = enter_file (fname);
+#endif /* CONFIG_WITH_STRCACHE2 */
+          else if (f->double_colon)
+            f = f->double_colon;
+
+          initialize_file_variables (f, 1);
+
+          current_variable_set_list = f->variables;
+          v = try_variable_definition (flocp, defn IF_WITH_VALUE_LENGTH_PARAM(NULL), origin, 1);
+          if (!v)
+            O (fatal, flocp, _("Malformed target-specific variable definition"));
+          current_variable_set_list = global;
+        }
+
+      /* Set up the variable to be *-specific.  */
+      v->per_target = 1;
+      v->private_var = vmod->private_v;
+      v->export = vmod->export_v ? v_export : v_default;
+
+      /* If it's not an override, check to see if there was a command-line
+         setting.  If so, reset the value.  */
+      if (v->origin != o_override)
+        {
+          struct variable *gv;
+#ifndef CONFIG_WITH_STRCACHE2
+          int len = strlen (v->name);
+#else
+          int len = !percent
+                  ? strcache2_get_len (&variable_strcache, v->name)
+                  : strlen(v->name);
+#endif
+
+          gv = lookup_variable (v->name, len);
+          if (gv && v != gv
+              && (gv->origin == o_env_override || gv->origin == o_command))
+            {
+#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+              assert (!v->rdonly_val); /* paranoia */
+#endif
+              free (v->value);
+#ifndef CONFIG_WITH_VALUE_LENGTH
+              v->value = xstrdup (gv->value);
+#else
+              v->value = xstrndup (gv->value, gv->value_length);
+              v->value_length = gv->value_length;
+#endif
+              v->origin = gv->origin;
+              v->recursive = gv->recursive;
+              v->append = 0;
+              VARIABLE_CHANGED (v);
+            }
+        }
+    }
+}
+
+/* Record a description line for files FILENAMES,
+   with dependencies DEPS, commands to execute described
+   by COMMANDS and COMMANDS_IDX, coming from FILENAME:COMMANDS_STARTED.
+   TWO_COLON is nonzero if a double colon was used.
+   If not nil, PATTERN is the '%' pattern to make this
+   a static pattern rule, and PATTERN_PERCENT is a pointer
+   to the '%' within it.
+
+   The links of FILENAMES are freed, and so are any names in it
+   that are not incorporated into other data structures.  */
+
+static void
+record_files (struct nameseq *filenames, const char *pattern,
+              const char *pattern_percent, char *depstr,
+              unsigned int cmds_started, char *commands,
+              unsigned int commands_idx, int two_colon,
+              char prefix, const floc *flocp)
+{
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  struct file *prev_file = 0;
+  enum multitarget_mode { m_unsettled, m_no, m_yes, m_yes_maybe }
+    multi_mode = !two_colon && !pattern ? m_unsettled : m_no;
+#endif
+  struct commands *cmds;
+  struct dep *deps;
+  const char *implicit_percent;
+  const char *name;
+
+  /* If we've already snapped deps, that means we're in an eval being
+     resolved after the makefiles have been read in.  We can't add more rules
+     at this time, since they won't get snapped and we'll get core dumps.
+     See Savannah bug # 12124.  */
+  if (snapped_deps)
+    O (fatal, flocp, _("prerequisites cannot be defined in recipes"));
+
+  /* Determine if this is a pattern rule or not.  */
+  name = filenames->name;
+  implicit_percent = find_percent_cached (&name);
+
+  /* If there's a recipe, set up a struct for it.  */
+  if (commands_idx > 0)
+    {
+#ifndef CONFIG_WITH_ALLOC_CACHES
+      cmds = xmalloc (sizeof (struct commands));
+#else
+      cmds = alloccache_alloc (&commands_cache);
+#endif
+      cmds->fileinfo.filenm = flocp->filenm;
+      cmds->fileinfo.lineno = cmds_started;
+      cmds->fileinfo.offset = 0;
+      cmds->commands = xstrndup (commands, commands_idx);
+      cmds->command_lines = 0;
+      cmds->recipe_prefix = prefix;
+#ifdef CONFIG_WITH_MEMORY_OPTIMIZATIONS
+      cmds->refs = 0;
+#endif
+    }
+  else
+     cmds = 0;
+
+  /* If there's a prereq string then parse it--unless it's eligible for 2nd
+     expansion: if so, snap_deps() will do it.  */
+  if (depstr == 0)
+    deps = 0;
+  else
+    {
+      depstr = unescape_char (depstr, ':');
+      if (second_expansion && strchr (depstr, '$'))
+        {
+          deps = alloc_dep ();
+          deps->name = depstr;
+          deps->need_2nd_expansion = 1;
+          deps->staticpattern = pattern != 0;
+        }
+      else
+        {
+          deps = split_prereqs (depstr);
+          free (depstr);
+
+          /* We'll enter static pattern prereqs later when we have the stem.
+             We don't want to enter pattern rules at all so that we don't
+             think that they ought to exist (make manual "Implicit Rule Search
+             Algorithm", item 5c).  */
+          if (! pattern && ! implicit_percent)
+            deps = enter_prereqs (deps, NULL);
+        }
+    }
+
+  /* For implicit rules, _all_ the targets must have a pattern.  That means we
+     can test the first one to see if we're working with an implicit rule; if
+     so we handle it specially. */
+
+  if (implicit_percent)
+    {
+      struct nameseq *nextf;
+      const char **targets, **target_pats;
+      unsigned int c;
+
+      if (pattern != 0)
+        O (fatal, flocp, _("mixed implicit and static pattern rules"));
+
+      /* Count the targets to create an array of target names.
+         We already have the first one.  */
+      nextf = filenames->next;
+      free_ns (filenames);
+      filenames = nextf;
+
+      for (c = 1; nextf; ++c, nextf = nextf->next)
+        ;
+      targets = xmalloc (c * sizeof (const char *));
+      target_pats = xmalloc (c * sizeof (const char *));
+
+      targets[0] = name;
+      target_pats[0] = implicit_percent;
+
+      c = 1;
+      while (filenames)
+        {
+          name = filenames->name;
+          implicit_percent = find_percent_cached (&name);
+
+          if (implicit_percent == 0)
+            O (fatal, flocp, _("mixed implicit and normal rules"));
+
+          targets[c] = name;
+          target_pats[c] = implicit_percent;
+          ++c;
+
+          nextf = filenames->next;
+          free_ns (filenames);
+          filenames = nextf;
+        }
+
+      create_pattern_rule (targets, target_pats, c, two_colon, deps, cmds, 1);
+
+      return;
+    }
+
+
+  /* Walk through each target and create it in the database.
+     We already set up the first target, above.  */
+  while (1)
+    {
+      struct nameseq *nextf = filenames->next;
+      struct file *f;
+      struct dep *this = 0;
+
+      free_ns (filenames);
+
+      /* Check for special targets.  Do it here instead of, say, snap_deps()
+         so that we can immediately use the value.  */
+      if (streq (name, ".POSIX"))
+        {
+          posix_pedantic = 1;
+          define_variable_cname (".SHELLFLAGS", "-ec", o_default, 0);
+          /* These default values are based on IEEE Std 1003.1-2008.  */
+          define_variable_cname ("ARFLAGS", "-rv", o_default, 0);
+          define_variable_cname ("CC", "c99", o_default, 0);
+          define_variable_cname ("CFLAGS", "-O", o_default, 0);
+          define_variable_cname ("FC", "fort77", o_default, 0);
+          define_variable_cname ("FFLAGS", "-O 1", o_default, 0);
+          define_variable_cname ("SCCSGETFLAGS", "-s", o_default, 0);
+        }
+      else if (streq (name, ".SECONDEXPANSION"))
+        second_expansion = 1;
+#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
+      else if (streq (name, ".SECONDTARGETEXPANSION"))
+        second_target_expansion = 1;
+#endif
+#if !defined (__MSDOS__) && !defined (__EMX__)
+      else if (streq (name, ".ONESHELL"))
+        one_shell = 1;
+#endif
+
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+      /* Check for the explicit multitarget mode operators. For this to be
+         identified as an explicit multiple target rule, the first + or +|
+         operator *must* appear between the first two files. If not found as
+         the 2nd file or if found as the 1st file, the rule will be rejected
+         as a potential multiple first target rule. For the subsequent files
+         the operator is only required to switch between maybe and non-maybe
+         mode:
+         `primary + 2nd 3rd +| 4th-maybe + 5th-for-sure: deps; cmds'
+
+         The whole idea of the maybe-updated files is this:
+            timestamp +| maybe.h: src1.c src2.c
+                grep goes-into-maybe.h $* > timestamp
+                cmp timestamp maybe.h || cp -f timestamp maybe.h
+
+        This is implemented in remake.c where we don't consider the mtime of
+        the maybe-updated targets. */
+      if (multi_mode != m_no && name[0] == '+'
+        && (name[1] == '\0' || (name[1] == '|' && name[2] == '\0')))
+        {
+          if (!prev_file)
+            multi_mode = m_no; /* first */
+          else
+            {
+              if (multi_mode == m_unsettled)
+                {
+                  prev_file->multi_head = prev_file;
+
+                  /* Only the primary file needs the dependencies. */
+                  if (deps)
+                    {
+                      free_dep_chain (deps);
+                      deps = NULL;
+                    }
+                }
+              multi_mode = name[1] == '\0' ? m_yes : m_yes_maybe;
+              goto l_next;
+            }
+        }
+      else if (multi_mode == m_unsettled && prev_file)
+        multi_mode = m_no;
+#endif
+
+      /* If this is a static pattern rule:
+         'targets: target%pattern: prereq%pattern; recipe',
+         make sure the pattern matches this target name.  */
+      if (pattern && !pattern_matches (pattern, pattern_percent, name))
+        OS (error, flocp,
+            _("target '%s' doesn't match the target pattern"), name);
+      else if (deps)
+        /* If there are multiple targets, copy the chain DEPS for all but the
+           last one.  It is not safe for the same deps to go in more than one
+           place in the database.  */
+        this = nextf != 0 ? copy_dep_chain (deps) : deps;
+
+      /* Find or create an entry in the file database for this target.  */
+      if (!two_colon)
+        {
+          /* Single-colon.  Combine this rule with the file's existing record,
+             if any.  */
+#ifndef KMK
+          f = enter_file (strcache_add (name));
+#else  /* KMK - the name is already in the cache, don't waste time.  */
+	  f = enter_file (name);
+#endif
+          if (f->double_colon)
+            OS (fatal, flocp,
+                _("target file '%s' has both : and :: entries"), f->name);
+
+          /* If CMDS == F->CMDS, this target was listed in this rule
+             more than once.  Just give a warning since this is harmless.  */
+          if (cmds != 0 && cmds == f->cmds)
+            OS (error, flocp,
+                _("target '%s' given more than once in the same rule"),
+                f->name);
+
+          /* Check for two single-colon entries both with commands.
+             Check is_target so that we don't lose on files such as .c.o
+             whose commands were preinitialized.  */
+          else if (cmds != 0 && f->cmds != 0 && f->is_target)
+            {
+              size_t l = strlen (f->name);
+              error (&cmds->fileinfo, l,
+                     _("warning: overriding recipe for target '%s'"),
+                     f->name);
+              error (&f->cmds->fileinfo, l,
+                     _("warning: ignoring old recipe for target '%s'"),
+                     f->name);
+            }
+
+          /* Defining .DEFAULT with no deps or cmds clears it.  */
+          if (f == default_file && this == 0 && cmds == 0)
+            f->cmds = 0;
+          if (cmds != 0)
+            f->cmds = cmds;
+
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+          /* If this is an explicit multi target rule, add it to the
+             target chain and set the multi_maybe flag according to
+             the current mode. */
+
+          if (multi_mode >= m_yes)
+            {
+              f->multi_maybe = multi_mode == m_yes_maybe;
+              prev_file->multi_next = f;
+              assert (prev_file->multi_head != 0);
+              f->multi_head = prev_file->multi_head;
+
+              if (f == suffix_file)
+                O (error, flocp,
+                   _(".SUFFIXES encountered in an explicit multi target rule"));
+            }
+          prev_file = f;
+#endif
+
+          /* Defining .SUFFIXES with no dependencies clears out the list of
+             suffixes.  */
+          if (f == suffix_file && this == 0)
+            {
+              free_dep_chain (f->deps);
+              f->deps = 0;
+            }
+        }
+      else
+        {
+          /* Double-colon.  Make a new record even if there already is one.  */
+#ifndef CONFIG_WITH_STRCACHE2
+	  f = lookup_file (name);
+#else  /* CONFIG_WITH_STRCACHE2 - the name is already in the cache, don't waste time.  */
+	  f = lookup_file_cached (name);
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+          /* Check for both : and :: rules.  Check is_target so we don't lose
+             on default suffix rules or makefiles.  */
+          if (f != 0 && f->is_target && !f->double_colon)
+            OS (fatal, flocp,
+                _("target file '%s' has both : and :: entries"), f->name);
+
+#ifndef KMK
+          f = enter_file (strcache_add (name));
+#else  /* KMK - the name is already in the cache, don't waste time.  */
+          f = enter_file (name);
+#endif
+          /* If there was an existing entry and it was a double-colon entry,
+             enter_file will have returned a new one, making it the prev
+             pointer of the old one, and setting its double_colon pointer to
+             the first one.  */
+          if (f->double_colon == 0)
+            /* This is the first entry for this name, so we must set its
+               double_colon pointer to itself.  */
+            f->double_colon = f;
+
+          f->cmds = cmds;
+        }
+
+      f->is_target = 1;
+
+      /* If this is a static pattern rule, set the stem to the part of its
+         name that matched the '%' in the pattern, so you can use $* in the
+         commands.  If we didn't do it before, enter the prereqs now.  */
+      if (pattern)
+        {
+          static const char *percent = "%";
+          char *buffer = variable_expand ("");
+          const size_t buffer_offset = buffer - variable_buffer; /* bird */
+          char *o = patsubst_expand_pat (buffer, name, pattern, percent,
+                                         pattern_percent+1, percent+1);
+          buffer = variable_buffer + buffer_offset; /* bird - variable_buffer may have been reallocated. */
+          f->stem = strcache_add_len (buffer, o - buffer);
+          if (this)
+            {
+              if (! this->need_2nd_expansion)
+                this = enter_prereqs (this, f->stem);
+              else
+                this->stem = f->stem;
+            }
+        }
+
+      /* Add the dependencies to this file entry.  */
+      if (this != 0)
+        {
+          /* Add the file's old deps and the new ones in THIS together.  */
+          if (f->deps == 0)
+            f->deps = this;
+          else if (cmds != 0)
+            {
+              struct dep *d = this;
+
+              /* If this rule has commands, put these deps first.  */
+              while (d->next != 0)
+                d = d->next;
+
+              d->next = f->deps;
+              f->deps = this;
+            }
+          else
+            {
+              struct dep *d = f->deps;
+
+              /* A rule without commands: put its prereqs at the end.  */
+              while (d->next != 0)
+                d = d->next;
+
+              d->next = this;
+            }
+        }
+
+      name = f->name;
+
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+l_next:
+#endif
+      /* All done!  Set up for the next one.  */
+      if (nextf == 0)
+        break;
+
+      filenames = nextf;
+
+      /* Reduce escaped percents.  If there are any unescaped it's an error  */
+      name = filenames->name;
+      if (find_percent_cached (&name))
+        O (error, flocp,
+           _("*** mixed implicit and normal rules: deprecated syntax"));
+    }
+}
+
+/* Search STRING for an unquoted STOPCHAR or blank (if BLANK is nonzero).
+   Backslashes quote STOPCHAR, blanks if BLANK is nonzero, and backslash.
+   Quoting backslashes are removed from STRING by compacting it into
+   itself.  Returns a pointer to the first unquoted STOPCHAR if there is
+   one, or nil if there are none.  STOPCHARs inside variable references are
+   ignored if IGNOREVARS is true.
+
+   STOPCHAR _cannot_ be '$' if IGNOREVARS is true.  */
+
+static char *
+find_char_unquote (char *string, int map IF_WITH_VALUE_LENGTH_PARAM(unsigned int string_len))
+{
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  unsigned int string_len = 0;
+#endif
+  char *p = string;
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  assert (string_len == 0 || string_len == strlen (string));
+#endif
+
+  /* Always stop on NUL.  */
+  map |= MAP_NUL;
+
+  while (1)
+    {
+      while (! STOP_SET (*p, map))
+        ++p;
+
+      if (*p == '\0')
+        break;
+
+      /* If we stopped due to a variable reference, skip over its contents.  */
+      if (STOP_SET (*p, MAP_VARIABLE))
+        {
+          char openparen = p[1];
+
+          /* Check if '$' is the last character in the string.  */
+          if (openparen == '\0')
+            break;
+
+          p += 2;
+
+          /* Skip the contents of a non-quoted, multi-char variable ref.  */
+          if (openparen == '(' || openparen == '{')
+            {
+              unsigned int pcount = 1;
+              char closeparen = (openparen == '(' ? ')' : '}');
+              char ch; /* bird */
+
+              while ((ch = *p))
+                {
+                  if (ch == openparen)
+                    ++pcount;
+                  else if (ch == closeparen)
+                    if (--pcount == 0)
+                      {
+                        ++p;
+                        break;
+                      }
+                  ++p;
+                }
+            }
+
+          /* Skipped the variable reference: look for STOPCHARS again.  */
+          continue;
+        }
+
+      if (p > string && p[-1] == '\\')
+        {
+          /* Search for more backslashes.  */
+          int i = -2;
+          while (&p[i] >= string && p[i] == '\\')
+            --i;
+          ++i;
+          /* Only compute the length if really needed.  */
+          if (string_len == 0)
+            string_len = strlen (string);
+          /* The number of backslashes is now -I.
+             Copy P over itself to swallow half of them.  */
+          memmove (&p[i], &p[i/2], (string_len - (p - string)) - (i/2) + 1);
+          p += i/2;
+          if (i % 2 == 0)
+            /* All the backslashes quoted each other; the STOPCHAR was
+               unquoted.  */
+            return p;
+
+          /* The STOPCHAR was quoted by a backslash.  Look for another.  */
+        }
+      else
+        /* No backslash in sight.  */
+        return p;
+    }
+
+  /* Never hit a STOPCHAR or blank (with BLANK nonzero).  */
+  return 0;
+}
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+/* Special case version of find_char_unquote that only takes stop character.
+   This is so common that it makes a lot of sense to specialize this. */
+
+K_INLINE char *
+find_char_unquote_0 (char *string, int stop1, int map, char **eosp)
+{
+  unsigned int string_len = *eosp - string;
+  char *p;
+
+  assert (strlen (string) == string_len);
+  assert (!(map & MAP_VARIABLE) && map != 0);
+  assert ((stopchar_map[(unsigned char)stop1] & map) == map);
+
+  p = (char *)memchr (string, stop1, string_len);
+  if (!p)
+    return NULL;
+  if (p <= string || p[-1] != '\\') 
+    return p;
+
+  p = find_char_unquote (string, map, string_len);
+  *eosp = memchr (string, '\0', string_len);
+  return p;
+}
+#endif
+
+/* Unescape a character in a string.  The string is compressed onto itself.  */
+
+static char *
+unescape_char (char *string, int c)
+{
+  char *p = string;
+  char *s = string;
+
+  while (*s != '\0')
+    {
+      if (*s == '\\')
+        {
+          char *e = s;
+          int l;
+
+          /* We found a backslash.  See if it's escaping our character.  */
+          while (*e == '\\')
+            ++e;
+          l = e - s;
+
+          if (*e != c || l%2 == 0)
+            {
+              /* It's not; just take it all without unescaping.  */
+              memmove (p, s, l);
+              p += l;
+
+              // If we hit the end of the string, we're done
+              if (*e == '\0')
+                break;
+            }
+          else if (l > 1)
+            {
+              /* It is, and there's >1 backslash.  Take half of them.  */
+              l /= 2;
+              memmove (p, s, l);
+              p += l;
+            }
+
+          s = e;
+        }
+
+      *(p++) = *(s++);
+    }
+
+  *p = '\0';
+  return string;
+}
+
+/* Search PATTERN for an unquoted % and handle quoting.  */
+
+char *
+find_percent (char *pattern)
+{
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  return find_char_unquote (pattern, MAP_PERCENT);
+#else
+  char *eos = strchr (pattern, '\0');
+  return find_char_unquote_0 (pattern, '%', MAP_PERCENT, &eos);
+#endif
+}
+
+/* Search STRING for an unquoted % and handle quoting.  Returns a pointer to
+   the % or NULL if no % was found.
+   This version is used with strings in the string cache: if there's a need to
+   modify the string a new version will be added to the string cache and
+   *STRING will be set to that.  */
+
+const char *
+find_percent_cached (const char **string)
+{
+  const char *p = *string;
+  char *new = 0;
+  int slen = 0;
+
+  /* If the first char is a % return now.  This lets us avoid extra tests
+     inside the loop.  */
+  if (*p == '%')
+    return p;
+
+  while (1)
+    {
+      while (! STOP_SET (*p, MAP_PERCENT|MAP_NUL))
+        ++p;
+
+      if (*p == '\0')
+        break;
+
+      /* See if this % is escaped with a backslash; if not we're done.  */
+      if (p[-1] != '\\')
+        break;
+
+      {
+        /* Search for more backslashes.  */
+        char *pv;
+        int i = -2;
+
+        while (&p[i] >= *string && p[i] == '\\')
+          --i;
+        ++i;
+
+        /* At this point we know we'll need to allocate a new string.
+           Make a copy if we haven't yet done so.  */
+        if (! new)
+          {
+            slen = strlen (*string);
+            new = alloca (slen + 1);
+            memcpy (new, *string, slen + 1);
+            p = new + (p - *string);
+            *string = new;
+          }
+
+        /* At this point *string, p, and new all point into the same string.
+           Get a non-const version of p so we can modify new.  */
+        pv = new + (p - *string);
+
+        /* The number of backslashes is now -I.
+           Copy P over itself to swallow half of them.  */
+        memmove (&pv[i], &pv[i/2], (slen - (pv - new)) - (i/2) + 1);
+        p += i/2;
+
+        /* If the backslashes quoted each other; the % was unquoted.  */
+        if (i % 2 == 0)
+          break;
+      }
+    }
+
+  /* If we had to change STRING, add it to the strcache.  */
+  if (new)
+    {
+      *string = strcache_add (*string);
+      p = *string + (p - new);
+    }
+
+  /* If we didn't find a %, return NULL.  Otherwise return a ptr to it.  */
+  return (*p == '\0') ? NULL : p;
+}
+
+/* Find the next line of text in an eval buffer, combining continuation lines
+   into one line.
+   Return the number of actual lines read (> 1 if continuation lines).
+   Returns -1 if there's nothing left in the buffer.
+
+   After this function, ebuf->buffer points to the first character of the
+   line we just found.
+ */
+
+/* Read a line of text from a STRING.
+   Since we aren't really reading from a file, don't bother with linenumbers.
+ */
+
+static long
+readstring (struct ebuffer *ebuf)
+{
+  char *eol;
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  char *end;
+#endif
+
+  /* If there is nothing left in this buffer, return 0.  */
+  if (ebuf->bufnext >= ebuf->bufstart + ebuf->size)
+    return -1;
+
+  /* Set up a new starting point for the buffer, and find the end of the
+     next logical line (taking into account backslash/newline pairs).  */
+
+  eol = ebuf->buffer = ebuf->bufnext;
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  end = ebuf->bufstart + ebuf->size;
+#endif
+
+  while (1)
+    {
+      int backslash = 0;
+      const char *bol = eol;
+      const char *p;
+
+      /* Find the next newline.  At EOS, stop.  */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      p = eol = strchr (eol , '\n');
+#else
+      p = (char *)memchr (eol, '\n', end - eol);
+      assert (!memchr (eol, '\0', p != 0 ? p - eol : end - eol));
+      eol = (char *)p;
+#endif
+      if (!eol)
+        {
+          ebuf->bufnext = ebuf->bufstart + ebuf->size + 1;
+#ifdef CONFIG_WITH_VALUE_LENGTH
+          ebuf->eol = end;
+#endif
+          return 0;
+        }
+
+      /* Found a newline; if it's escaped continue; else we're done.  */
+      while (p > bol && *(--p) == '\\')
+        backslash = !backslash;
+      if (!backslash)
+        break;
+      ++eol;
+    }
+
+  /* Overwrite the newline char.  */
+  *eol = '\0';
+  ebuf->bufnext = eol+1;
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  ebuf->eol = eol;
+#endif
+
+  return 0;
+}
+
+static long
+readline (struct ebuffer *ebuf)
+{
+  char *p;
+  char *end;
+  char *start;
+  long nlines = 0;
+
+  /* The behaviors between string and stream buffers are different enough to
+     warrant different functions.  Do the Right Thing.  */
+
+  if (!ebuf->fp)
+    return readstring (ebuf);
+
+  /* When reading from a file, we always start over at the beginning of the
+     buffer for each new line.  */
+
+  p = start = ebuf->bufstart;
+  end = p + ebuf->size;
+  *p = '\0';
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  ebuf->eol = p;
+#endif
+
+  while (fgets (p, end - p, ebuf->fp) != 0)
+    {
+      char *p2;
+      unsigned long len;
+      int backslash;
+
+      len = strlen (p);
+      if (len == 0)
+        {
+          /* This only happens when the first thing on the line is a '\0'.
+             It is a pretty hopeless case, but (wonder of wonders) Athena
+             lossage strikes again!  (xmkmf puts NULs in its makefiles.)
+             There is nothing really to be done; we synthesize a newline so
+             the following line doesn't appear to be part of this line.  */
+          O (error, &ebuf->floc,
+             _("warning: NUL character seen; rest of line ignored"));
+          p[0] = '\n';
+          len = 1;
+        }
+
+      /* Jump past the text we just read.  */
+      p += len;
+
+      /* If the last char isn't a newline, the whole line didn't fit into the
+         buffer.  Get some more buffer and try again.  */
+      if (p[-1] != '\n')
+        goto more_buffer;
+
+      /* We got a newline, so add one to the count of lines.  */
+      ++nlines;
+
+#if !defined(WINDOWS32) && !defined(__MSDOS__) && !defined(__EMX__)
+      /* Check to see if the line was really ended with CRLF; if so ignore
+         the CR.  */
+      if ((p - start) > 1 && p[-2] == '\r')
+        {
+          --p;
+          memmove (p-1, p, strlen (p) + 1);
+        }
+#endif
+
+      backslash = 0;
+      for (p2 = p - 2; p2 >= start; --p2)
+        {
+          if (*p2 != '\\')
+            break;
+          backslash = !backslash;
+        }
+
+      if (!backslash)
+        {
+          p[-1] = '\0';
+#ifdef CONFIG_WITH_VALUE_LENGTH
+          ebuf->eol = p - 1;
+#endif
+          break;
+        }
+
+      /* It was a backslash/newline combo.  If we have more space, read
+         another line.  */
+      if (end - p >= 80)
+        {
+#ifdef CONFIG_WITH_VALUE_LENGTH
+          ebuf->eol = p;
+#endif
+          continue;
+        }
+
+      /* We need more space at the end of our buffer, so realloc it.
+         Make sure to preserve the current offset of p.  */
+    more_buffer:
+      {
+        unsigned long off = p - start;
+        ebuf->size *= 2;
+        start = ebuf->buffer = ebuf->bufstart = xrealloc (start, ebuf->size);
+        p = start + off;
+        end = start + ebuf->size;
+        *p = '\0';
+#ifdef CONFIG_WITH_VALUE_LENGTH
+        ebuf->eol = p;
+#endif
+      }
+    }
+
+  if (ferror (ebuf->fp))
+    pfatal_with_name (ebuf->floc.filenm);
+
+  /* If we found some lines, return how many.
+     If we didn't, but we did find _something_, that indicates we read the last
+     line of a file with no final newline; return 1.
+     If we read nothing, we're at EOF; return -1.  */
+
+  return nlines ? nlines : p == ebuf->bufstart ? -1 : 1;
+}
+
+/* Parse the next "makefile word" from the input buffer, and return info
+   about it.
+
+   A "makefile word" is one of:
+
+     w_bogus        Should never happen
+     w_eol          End of input
+     w_static       A static word; cannot be expanded
+     w_variable     A word containing one or more variables/functions
+     w_colon        A colon
+     w_dcolon       A double-colon
+     w_semicolon    A semicolon
+     w_varassign    A variable assignment operator (=, :=, ::=, +=, >=, ?=, or !=)
+
+   Note that this function is only used when reading certain parts of the
+   makefile.  Don't use it where special rules hold sway (RHS of a variable,
+   in a command list, etc.)  */
+
+static enum make_word_type
+get_next_mword (char *buffer, char *delim, char **startp, unsigned int *length)
+{
+  enum make_word_type wtype = w_bogus;
+  char *p = buffer, *beg;
+  char c;
+
+  /* Skip any leading whitespace.  */
+  while (ISBLANK (*p))
+    ++p;
+
+  beg = p;
+  c = *(p++);
+  switch (c)
+    {
+    case '\0':
+      wtype = w_eol;
+      break;
+
+    case ';':
+      wtype = w_semicolon;
+      break;
+
+    case '=':
+      wtype = w_varassign;
+      break;
+
+    case ':':
+      wtype = w_colon;
+      switch (*p)
+        {
+        case ':':
+          ++p;
+          if (p[1] != '=')
+            wtype = w_dcolon;
+          else
+            {
+              wtype = w_varassign;
+              ++p;
+            }
+          break;
+
+        case '=':
+          ++p;
+          wtype = w_varassign;
+          break;
+        }
+      break;
+
+    case '+':
+    case '?':
+    case '!':
+#ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
+    case '>':
+#endif
+      if (*p == '=')
+        {
+          ++p;
+          wtype = w_varassign;
+          break;
+        }
+      /* fall thru */
+
+    default:
+      if (delim && strchr (delim, c))
+        wtype = w_static;
+      break;
+    }
+
+  /* Did we find something?  If so, return now.  */
+  if (wtype != w_bogus)
+    goto done;
+
+  /* This is some non-operator word.  A word consists of the longest
+     string of characters that doesn't contain whitespace, one of [:=#],
+     or [?+!]=, or one of the chars in the DELIM string.  */
+
+  /* We start out assuming a static word; if we see a variable we'll
+     adjust our assumptions then.  */
+  wtype = w_static;
+
+  /* We already found the first value of "c", above.  */
+  while (1)
+    {
+      char closeparen;
+      int count;
+
+      switch (c)
+        {
+        case '\0':
+        case ' ':
+        case '\t':
+        case '=':
+          goto done_word;
+
+        case ':':
+#ifdef HAVE_DOS_PATHS
+          /* A word CAN include a colon in its drive spec.  The drive
+             spec is allowed either at the beginning of a word, or as part
+             of the archive member name, like in "libfoo.a(d:/foo/bar.o)".  */
+          if (!(p - beg >= 2
+                && (*p == '/' || *p == '\\') && isalpha ((unsigned char)p[-2])
+                && (p - beg == 2 || p[-3] == '(')))
+#endif
+          goto done_word;
+
+        case '$':
+          c = *(p++);
+          if (c == '$')
+            break;
+          if (c == '\0')
+            goto done_word;
+
+          /* This is a variable reference, so note that it's expandable.
+             Then read it to the matching close paren.  */
+          wtype = w_variable;
+
+          if (c == '(')
+            closeparen = ')';
+          else if (c == '{')
+            closeparen = '}';
+          else
+            /* This is a single-letter variable reference.  */
+            break;
+
+          for (count=0; *p != '\0'; ++p)
+            {
+              if (*p == c)
+                ++count;
+              else if (*p == closeparen && --count < 0)
+                {
+                  ++p;
+                  break;
+                }
+            }
+          break;
+
+        case '?':
+        case '+':
+#ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
+        case '>':
+#endif
+          if (*p == '=')
+            goto done_word;
+          break;
+
+        case '\\':
+          switch (*p)
+            {
+            case ':':
+            case ';':
+            case '=':
+            case '\\':
+              ++p;
+              break;
+            }
+          break;
+
+        default:
+          if (delim && strchr (delim, c))
+            goto done_word;
+          break;
+        }
+
+      c = *(p++);
+    }
+ done_word:
+  --p;
+
+ done:
+  if (startp)
+    *startp = beg;
+  if (length)
+    *length = p - beg;
+  return wtype;
+}
+
+/* Construct the list of include directories
+   from the arguments and the default list.  */
+
+void
+construct_include_path (const char **arg_dirs)
+{
+#ifdef VAXC             /* just don't ask ... */
+  stat_t stbuf;
+#else
+  struct stat stbuf;
+#endif
+  const char **dirs;
+  const char **cpp;
+  unsigned int idx;
+
+  /* Compute the number of pointers we need in the table.  */
+  idx = sizeof (default_include_directories) / sizeof (const char *);
+  if (arg_dirs)
+    for (cpp = arg_dirs; *cpp != 0; ++cpp)
+      ++idx;
+
+#ifdef  __MSDOS__
+  /* Add one for $DJDIR.  */
+  ++idx;
+#endif
+#ifdef KMK
+  /* Add one for the kBuild directory. */
+  ++idx;
+#endif
+
+  dirs = xmalloc (idx * sizeof (const char *));
+
+  idx = 0;
+  max_incl_len = 0;
+
+  /* First consider any dirs specified with -I switches.
+     Ignore any that don't exist.  Remember the maximum string length.  */
+
+  if (arg_dirs)
+    while (*arg_dirs != 0)
+      {
+        const char *dir = *(arg_dirs++);
+        char *expanded = 0;
+        int e;
+
+        if (dir[0] == '~')
+          {
+            expanded = tilde_expand (dir);
+            if (expanded != 0)
+              dir = expanded;
+          }
+
+        EINTRLOOP (e, stat (dir, &stbuf));
+        if (e == 0 && S_ISDIR (stbuf.st_mode))
+          {
+            unsigned int len = strlen (dir);
+            /* If dir name is written with trailing slashes, discard them.  */
+            while (len > 1 && dir[len - 1] == '/')
+              --len;
+            if (len > max_incl_len)
+              max_incl_len = len;
+            dirs[idx++] = strcache_add_len (dir, len);
+          }
+
+        free (expanded);
+      }
+
+  /* Now add the standard default dirs at the end.  */
+
+#ifdef  __MSDOS__
+  {
+    /* The environment variable $DJDIR holds the root of the DJGPP directory
+       tree; add ${DJDIR}/include.  */
+    struct variable *djdir = lookup_variable ("DJDIR", 5);
+
+    if (djdir)
+      {
+        unsigned int len = strlen (djdir->value) + 8;
+        char *defdir = alloca (len + 1);
+
+        strcat (strcpy (defdir, djdir->value), "/include");
+        dirs[idx++] = strcache_add (defdir);
+
+        if (len > max_incl_len)
+          max_incl_len = len;
+      }
+  }
+#endif
+#ifdef KMK
+  /* Add $(KBUILD_PATH). */
+  {
+    size_t len = strlen (get_kbuild_path ());
+    dirs[idx++] = strcache_add_len (get_kbuild_path (), len);
+    if (len > max_incl_len)
+      max_incl_len = len;
+  }
+#endif
+
+  for (cpp = default_include_directories; *cpp != 0; ++cpp)
+    {
+      int e;
+
+      EINTRLOOP (e, stat (*cpp, &stbuf));
+      if (e == 0 && S_ISDIR (stbuf.st_mode))
+        {
+          unsigned int len = strlen (*cpp);
+          /* If dir name is written with trailing slashes, discard them.  */
+          while (len > 1 && (*cpp)[len - 1] == '/')
+            --len;
+          if (len > max_incl_len)
+            max_incl_len = len;
+          dirs[idx++] = strcache_add_len (*cpp, len);
+        }
+    }
+
+  dirs[idx] = 0;
+
+  /* Now add each dir to the .INCLUDE_DIRS variable.  */
+
+  for (cpp = dirs; *cpp != 0; ++cpp)
+    do_variable_definition (NILF, ".INCLUDE_DIRS", *cpp,
+                            o_default, f_append, 0);
+
+  include_directories = dirs;
+}
+
+/* Expand ~ or ~USER at the beginning of NAME.
+   Return a newly malloc'd string or 0.  */
+
+char *
+tilde_expand (const char *name)
+{
+#ifndef VMS
+  if (name[1] == '/' || name[1] == '\0')
+    {
+      char *home_dir;
+      int is_variable;
+
+      {
+        /* Turn off --warn-undefined-variables while we expand HOME.  */
+        int save = warn_undefined_variables_flag;
+        warn_undefined_variables_flag = 0;
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+        home_dir = allocated_variable_expand ("$(HOME)");
+#else
+        home_dir = allocated_variable_expand_2 (STRING_SIZE_TUPLE("$(HOME)"), NULL);
+#endif
+
+        warn_undefined_variables_flag = save;
+      }
+
+      is_variable = home_dir[0] != '\0';
+      if (!is_variable)
+        {
+          free (home_dir);
+          home_dir = getenv ("HOME");
+        }
+# if !defined(_AMIGA) && !defined(WINDOWS32)
+      if (home_dir == 0 || home_dir[0] == '\0')
+        {
+          char *logname = getlogin ();
+          home_dir = 0;
+          if (logname != 0)
+            {
+              struct passwd *p = getpwnam (logname);
+              if (p != 0)
+                home_dir = p->pw_dir;
+            }
+        }
+# endif /* !AMIGA && !WINDOWS32 */
+      if (home_dir != 0)
+        {
+          char *new = xstrdup (concat (2, home_dir, name + 1));
+          if (is_variable)
+            free (home_dir);
+          return new;
+        }
+    }
+# if !defined(_AMIGA) && !defined(WINDOWS32)
+  else
+    {
+      struct passwd *pwent;
+      char *userend = strchr (name + 1, '/');
+      if (userend != 0)
+        *userend = '\0';
+      pwent = getpwnam (name + 1);
+      if (pwent != 0)
+        {
+          if (userend == 0)
+            return xstrdup (pwent->pw_dir);
+          else
+            return xstrdup (concat (3, pwent->pw_dir, "/", userend + 1));
+        }
+      else if (userend != 0)
+        *userend = '/';
+    }
+# endif /* !AMIGA && !WINDOWS32 */
+#endif /* !VMS */
+  return 0;
+}
+
+/* Parse a string into a sequence of filenames represented as a chain of
+   struct nameseq's and return that chain.  Optionally expand the strings via
+   glob().
+
+   The string is passed as STRINGP, the address of a string pointer.
+   The string pointer is updated to point at the first character
+   not parsed, which either is a null char or equals STOPCHAR.
+
+   SIZE is how big to construct chain elements.
+   This is useful if we want them actually to be other structures
+   that have room for additional info.
+
+   PREFIX, if non-null, is added to the beginning of each filename.
+
+   FLAGS allows one or more of the following bitflags to be set:
+        PARSEFS_NOSTRIP - Do no strip './'s off the beginning
+        PARSEFS_NOAR    - Do not check filenames for archive references
+        PARSEFS_NOGLOB  - Do not expand globbing characters
+        PARSEFS_EXISTS  - Only return globbed files that actually exist
+                          (cannot also set NOGLOB)
+        PARSEFS_NOCACHE - Do not add filenames to the strcache (caller frees)
+  */
+
+void *
+parse_file_seq (char **stringp, unsigned int size, int stopmap,
+                const char *prefix, int flags
+                IF_WITH_ALLOC_CACHES_PARAM(struct alloccache *alloc_cache) )
+{
+  /* tmp points to tmpbuf after the prefix, if any.
+     tp is the end of the buffer. */
+  static char *tmpbuf = NULL;
+
+  int cachep = NONE_SET (flags, PARSEFS_NOCACHE);
+
+  struct nameseq *new = 0;
+  struct nameseq **newp = &new;
+#ifndef CONFIG_WITH_ALLOC_CACHES
+#define NEWELT(_n)  do { \
+                        const char *__n = (_n); \
+                        *newp = xcalloc (size); \
+                        (*newp)->name = (cachep ? strcache_add (__n) : xstrdup (__n)); \
+                        newp = &(*newp)->next; \
+                    } while(0)
+#else
+# define NEWELT(_n)  do { \
+                        const char *__n = (_n); \
+                        *newp = alloccache_calloc (alloc_cache); \
+                        (*newp)->name = (cachep ? strcache_add (__n) : xstrdup (__n)); \
+                        newp = &(*newp)->next; \
+                    } while(0)
+#endif
+
+  char *p;
+  glob_t gl;
+  char *tp;
+
+  /* Always stop on NUL.  */
+  stopmap |= MAP_NUL;
+
+  if (size < sizeof (struct nameseq))
+    size = sizeof (struct nameseq);
+
+  if (NONE_SET (flags, PARSEFS_NOGLOB))
+    dir_setup_glob (&gl);
+
+  /* Get enough temporary space to construct the largest possible target.  */
+  {
+    static int tmpbuf_len = 0;
+    int l = strlen (*stringp) + 1;
+    if (l > tmpbuf_len)
+      {
+        tmpbuf = xrealloc (tmpbuf, l);
+        tmpbuf_len = l;
+      }
+  }
+  tp = tmpbuf;
+
+  /* Parse STRING.  P will always point to the end of the parsed content.  */
+  p = *stringp;
+  while (1)
+    {
+      const char *name;
+      const char **nlist = 0;
+      char *tildep = 0;
+      int globme = 1;
+#ifndef NO_ARCHIVES
+      char *arname = 0;
+      char *memname = 0;
+#endif
+      char *s;
+      int nlen;
+      int i;
+
+      /* Skip whitespace; at the end of the string or STOPCHAR we're done.  */
+      NEXT_TOKEN (p);
+      if (STOP_SET (*p, stopmap))
+        break;
+
+      /* There are names left, so find the end of the next name.
+         Throughout this iteration S points to the start.  */
+      s = p;
+      p = find_char_unquote (p, stopmap|MAP_VMSCOMMA|MAP_BLANK IF_WITH_VALUE_LENGTH_PARAM(0));
+#ifdef VMS
+        /* convert comma separated list to space separated */
+      if (p && *p == ',')
+        *p =' ';
+#endif
+#ifdef _AMIGA
+      if (p && STOP_SET (*p, stopmap & MAP_COLON)
+          && !(ISSPACE (p[1]) || !p[1] || ISSPACE (p[-1])))
+        p = find_char_unquote (p+1, stopmap|MAP_VMSCOMMA|MAP_BLANK);
+#endif
+#ifdef HAVE_DOS_PATHS
+    /* For DOS paths, skip a "C:\..." or a "C:/..." until we find the
+       first colon which isn't followed by a slash or a backslash.
+       Note that tokens separated by spaces should be treated as separate
+       tokens since make doesn't allow path names with spaces */
+    if (stopmap | MAP_COLON)
+      while (p != 0 && !ISSPACE (*p) &&
+             (p[1] == '\\' || p[1] == '/') && isalpha ((unsigned char)p[-1]))
+        p = find_char_unquote (p + 1, stopmap|MAP_VMSCOMMA|MAP_BLANK IF_WITH_VALUE_LENGTH_PARAM(0));
+#endif
+      if (p == 0)
+        p = s + strlen (s);
+
+      /* Strip leading "this directory" references.  */
+      if (NONE_SET (flags, PARSEFS_NOSTRIP))
+#ifdef VMS
+        /* Skip leading '[]'s. should only be one set or bug somwhere else */
+        if (p - s > 2 && s[0] == '[' && s[1] == ']')
+            s += 2;
+        /* Skip leading '<>'s. should only be one set or bug somwhere else */
+        if (p - s > 2 && s[0] == '<' && s[1] == '>')
+            s += 2;
+#endif
+        /* Skip leading './'s.  */
+        while (p - s > 2 && s[0] == '.' && s[1] == '/')
+          {
+            /* Skip "./" and all following slashes.  */
+            s += 2;
+            while (*s == '/')
+              ++s;
+          }
+
+      /* Extract the filename just found, and skip it.
+         Set NAME to the string, and NLEN to its length.  */
+
+      if (s == p)
+        {
+        /* The name was stripped to empty ("./"). */
+#if defined(_AMIGA)
+          /* PDS-- This cannot be right!! */
+          tp[0] = '\0';
+          nlen = 0;
+#else
+          tp[0] = '.';
+          tp[1] = '/';
+          tp[2] = '\0';
+          nlen = 2;
+#endif
+        }
+      else
+        {
+#ifdef VMS
+/* VMS filenames can have a ':' in them but they have to be '\'ed but we need
+ *  to remove this '\' before we can use the filename.
+ * xstrdup called because S may be read-only string constant.
+ */
+          char *n = tp;
+          while (s < p)
+            {
+              if (s[0] == '\\' && s[1] == ':')
+                ++s;
+              *(n++) = *(s++);
+            }
+          n[0] = '\0';
+          nlen = strlen (tp);
+#else
+          nlen = p - s;
+          memcpy (tp, s, nlen);
+          tp[nlen] = '\0';
+#endif
+        }
+
+      /* At this point, TP points to the element and NLEN is its length.  */
+
+#ifndef NO_ARCHIVES
+      /* If this is the start of an archive group that isn't complete, set up
+         to add the archive prefix for future files.  A file list like:
+         "libf.a(x.o y.o z.o)" needs to be expanded as:
+         "libf.a(x.o) libf.a(y.o) libf.a(z.o)"
+
+         TP == TMP means we're not already in an archive group.  Ignore
+         something starting with '(', as that cannot actually be an
+         archive-member reference (and treating it as such results in an empty
+         file name, which causes much lossage).  Also if it ends in ")" then
+         it's a complete reference so we don't need to treat it specially.
+
+         Finally, note that archive groups must end with ')' as the last
+         character, so ensure there's some word ending like that before
+         considering this an archive group.  */
+      if (NONE_SET (flags, PARSEFS_NOAR)
+          && tp == tmpbuf && tp[0] != '(' && tp[nlen-1] != ')')
+        {
+          char *n = strchr (tp, '(');
+          if (n)
+            {
+              /* This looks like the first element in an open archive group.
+                 A valid group MUST have ')' as the last character.  */
+              const char *e = p;
+              do
+                {
+                  const char *o = e;
+                  NEXT_TOKEN (e);
+                  /* Find the end of this word.  We don't want to unquote and
+                     we don't care about quoting since we're looking for the
+                     last char in the word. */
+                  while (! STOP_SET (*e, stopmap|MAP_BLANK|MAP_VMSCOMMA))
+                    ++e;
+                  /* If we didn't move, we're done now.  */
+                  if (e == o)
+                    break;
+                  if (e[-1] == ')')
+                    {
+                      /* Found the end, so this is the first element in an
+                         open archive group.  It looks like "lib(mem".
+                         Reset TP past the open paren.  */
+                      nlen -= (n + 1) - tp;
+                      tp = n + 1;
+
+                      /* We can stop looking now.  */
+                      break;
+                    }
+                }
+              while (*e != '\0');
+
+              /* If we have just "lib(", part of something like "lib( a b)",
+                 go to the next item.  */
+              if (! nlen)
+                continue;
+            }
+        }
+
+      /* If we are inside an archive group, make sure it has an end.  */
+      if (tp > tmpbuf)
+        {
+          if (tp[nlen-1] == ')')
+            {
+              /* This is the natural end; reset TP.  */
+              tp = tmpbuf;
+
+              /* This is just ")", something like "lib(a b )": skip it.  */
+              if (nlen == 1)
+                continue;
+            }
+          else
+            {
+              /* Not the end, so add a "fake" end.  */
+              tp[nlen++] = ')';
+              tp[nlen] = '\0';
+            }
+        }
+#endif
+
+      /* If we're not globbing we're done: add it to the end of the chain.
+         Go to the next item in the string.  */
+      if (ANY_SET (flags, PARSEFS_NOGLOB))
+        {
+          NEWELT (concat (2, prefix, tmpbuf));
+          continue;
+        }
+
+      /* If we get here we know we're doing glob expansion.
+         TP is a string in tmpbuf.  NLEN is no longer used.
+         We may need to do more work: after this NAME will be set.  */
+      name = tmpbuf;
+
+      /* Expand tilde if applicable.  */
+      if (tmpbuf[0] == '~')
+        {
+          tildep = tilde_expand (tmpbuf);
+          if (tildep != 0)
+            name = tildep;
+        }
+
+#ifndef NO_ARCHIVES
+      /* If NAME is an archive member reference replace it with the archive
+         file name, and save the member name in MEMNAME.  We will glob on the
+         archive name and then reattach MEMNAME later.  */
+      if (NONE_SET (flags, PARSEFS_NOAR) && ar_name (name))
+        {
+          ar_parse_name (name, &arname, &memname);
+          name = arname;
+        }
+#endif /* !NO_ARCHIVES */
+
+      /* glob() is expensive: don't call it unless we need to.  */
+      if (NONE_SET (flags, PARSEFS_EXISTS) && strpbrk (name, "?*[") == NULL)
+        {
+          globme = 0;
+          i = 1;
+          nlist = &name;
+        }
+      else
+        switch (glob (name, GLOB_NOSORT|GLOB_ALTDIRFUNC, NULL, &gl))
+          {
+          case GLOB_NOSPACE:
+            OUT_OF_MEM();
+
+          case 0:
+            /* Success.  */
+            i = gl.gl_pathc;
+            nlist = (const char **)gl.gl_pathv;
+            break;
+
+          case GLOB_NOMATCH:
+            /* If we want only existing items, skip this one.  */
+            if (ANY_SET (flags, PARSEFS_EXISTS))
+              {
+                i = 0;
+                break;
+              }
+            /* FALLTHROUGH */
+
+          default:
+            /* By default keep this name.  */
+            i = 1;
+            nlist = &name;
+            break;
+          }
+
+      /* For each matched element, add it to the list.  */
+      while (i-- > 0)
+#ifndef NO_ARCHIVES
+        if (memname != 0)
+          {
+            /* Try to glob on MEMNAME within the archive.  */
+            struct nameseq *found = ar_glob (nlist[i], memname, size);
+            if (! found)
+              /* No matches.  Use MEMNAME as-is.  */
+              NEWELT (concat (5, prefix, nlist[i], "(", memname, ")"));
+            else
+              {
+                /* We got a chain of items.  Attach them.  */
+                if (*newp)
+                  (*newp)->next = found;
+                else
+                  *newp = found;
+
+                /* Find and set the new end.  Massage names if necessary.  */
+                while (1)
+                  {
+                    if (! cachep)
+                      found->name = xstrdup (concat (2, prefix, name));
+                    else if (prefix)
+                      found->name = strcache_add (concat (2, prefix, name));
+
+                    if (found->next == 0)
+                      break;
+
+                    found = found->next;
+                  }
+                newp = &found->next;
+              }
+          }
+        else
+#endif /* !NO_ARCHIVES */
+          NEWELT (concat (2, prefix, nlist[i]));
+
+      if (globme)
+        globfree (&gl);
+
+#ifndef NO_ARCHIVES
+      free (arname);
+#endif
+
+      free (tildep);
+    }
+
+  *stringp = p;
+  return new;
+}
+
diff --git a/src/kmk/remake.c b/src/kmk/remake.c
new file mode 100644
index 0000000..2551816
--- /dev/null
+++ b/src/kmk/remake.c
@@ -0,0 +1,2124 @@
+/* Basic dependency engine for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "job.h"
+#include "commands.h"
+#include "dep.h"
+#include "variable.h"
+#include "debug.h"
+
+#include <assert.h>
+
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#else
+#include <sys/file.h>
+#endif
+
+#ifdef VMS
+#include <starlet.h>
+#endif
+#ifdef WINDOWS32
+#include <io.h>
+#endif
+
+
+/* The test for circular dependencies is based on the 'updating' bit in
+   'struct file'.  However, double colon targets have separate 'struct
+   file's; make sure we always use the base of the double colon chain. */
+
+#define start_updating(_f)  (((_f)->double_colon ? (_f)->double_colon : (_f))\
+                             ->updating = 1)
+#define finish_updating(_f) (((_f)->double_colon ? (_f)->double_colon : (_f))\
+                             ->updating = 0)
+#define is_updating(_f)     (((_f)->double_colon ? (_f)->double_colon : (_f))\
+                             ->updating)
+
+
+/* Incremented when a command is started (under -n, when one would be).  */
+unsigned int commands_started = 0;
+
+/* Set to the goal dependency.  Mostly needed for remaking makefiles.  */
+static struct goaldep *goal_list;
+static struct dep *goal_dep;
+
+/* Current value for pruning the scan of the goal chain.
+   All files start with considered == 0.  */
+static unsigned int considered = 0;
+
+static enum update_status update_file (struct file *file, unsigned int depth);
+static enum update_status update_file_1 (struct file *file, unsigned int depth);
+static enum update_status check_dep (struct file *file, unsigned int depth,
+                                     FILE_TIMESTAMP this_mtime, int *must_make);
+static enum update_status touch_file (struct file *file);
+static void remake_file (struct file *file);
+static FILE_TIMESTAMP name_mtime (const char *name);
+static const char *library_search (const char *lib, FILE_TIMESTAMP *mtime_ptr);
+
+#ifdef CONFIG_WITH_DOT_MUST_MAKE
+static int call_must_make_target_var (struct file *file, unsigned int depth);
+#endif
+#ifdef CONFIG_WITH_DOT_IS_CHANGED
+static int call_is_changed_target_var (struct file *file);
+#endif
+
+
+/* Remake all the goals in the 'struct dep' chain GOALS.  Return -1 if nothing
+   was done, 0 if all goals were updated successfully, or 1 if a goal failed.
+
+   If rebuilding_makefiles is nonzero, these goals are makefiles, so -t, -q,
+   and -n should be disabled for them unless they were also command-line
+   targets, and we should only make one goal at a time and return as soon as
+   one goal whose 'changed' member is nonzero is successfully made.  */
+
+enum update_status
+update_goal_chain (struct goaldep *goaldeps)
+{
+  int t = touch_flag, q = question_flag, n = just_print_flag;
+  enum update_status status = us_none;
+
+  /* Duplicate the chain so we can remove things from it.  */
+
+  struct dep *goals = copy_dep_chain ((struct dep *)goaldeps);
+
+  goal_list = rebuilding_makefiles ? goaldeps : NULL;
+
+#define MTIME(file) (rebuilding_makefiles ? file_mtime_no_search (file) \
+                     : file_mtime (file))
+
+  /* Start a fresh batch of consideration.  */
+  ++considered;
+
+  /* Update all the goals until they are all finished.  */
+
+  while (goals != 0)
+    {
+      register struct dep *g, *lastgoal;
+
+      /* Start jobs that are waiting for the load to go down.  */
+
+      start_waiting_jobs ();
+
+      /* Wait for a child to die.  */
+
+      reap_children (1, 0);
+
+      lastgoal = 0;
+      g = goals;
+      while (g != 0)
+        {
+          /* Iterate over all double-colon entries for this file.  */
+          struct file *file;
+          int stop = 0, any_not_updated = 0;
+
+          goal_dep = g;
+
+          for (file = g->file->double_colon ? g->file->double_colon : g->file;
+               file != NULL;
+               file = file->prev)
+            {
+              unsigned int ocommands_started;
+              enum update_status fail;
+
+              file->dontcare = ANY_SET (g->flags, RM_DONTCARE);
+
+              check_renamed (file);
+              if (rebuilding_makefiles)
+                {
+                  if (file->cmd_target)
+                    {
+                      touch_flag = t;
+                      question_flag = q;
+                      just_print_flag = n;
+                    }
+                  else
+                    touch_flag = question_flag = just_print_flag = 0;
+                }
+
+              /* Save the old value of 'commands_started' so we can compare
+                 later.  It will be incremented when any commands are
+                 actually run.  */
+              ocommands_started = commands_started;
+
+              fail = update_file (file, rebuilding_makefiles ? 1 : 0);
+              check_renamed (file);
+
+              /* Set the goal's 'changed' flag if any commands were started
+                 by calling update_file above.  We check this flag below to
+                 decide when to give an "up to date" diagnostic.  */
+              if (commands_started > ocommands_started)
+                g->changed = 1;
+
+              stop = 0;
+              if ((fail || file->updated) && status < us_question)
+                {
+                  /* We updated this goal.  Update STATUS and decide whether
+                     to stop.  */
+                  if (file->update_status)
+                    {
+                      /* Updating failed, or -q triggered.  The STATUS value
+                         tells our caller which.  */
+                      status = file->update_status;
+                      /* If -q just triggered, stop immediately.  It doesn't
+                         matter how much more we run, since we already know
+                         the answer to return.  */
+                      stop = (question_flag && !keep_going_flag
+                              && !rebuilding_makefiles);
+                    }
+                  else
+                    {
+                      FILE_TIMESTAMP mtime = MTIME (file);
+                      check_renamed (file);
+
+                      if (file->updated && g->changed &&
+                           mtime != file->mtime_before_update)
+                        {
+                          /* Updating was done.  If this is a makefile and
+                             just_print_flag or question_flag is set (meaning
+                             -n or -q was given and this file was specified
+                             as a command-line target), don't change STATUS.
+                             If STATUS is changed, we will get re-exec'd, and
+                             enter an infinite loop.  */
+                          if (!rebuilding_makefiles
+                              || (!just_print_flag && !question_flag))
+                            status = us_success;
+                          if (rebuilding_makefiles && file->dontcare)
+                            /* This is a default makefile; stop remaking.  */
+                            stop = 1;
+                        }
+                    }
+                }
+
+              /* Keep track if any double-colon entry is not finished.
+                 When they are all finished, the goal is finished.  */
+              any_not_updated |= !file->updated;
+
+              file->dontcare = 0;
+
+              if (stop)
+                break;
+            }
+
+          /* Reset FILE since it is null at the end of the loop.  */
+          file = g->file;
+
+          if (stop || !any_not_updated)
+            {
+              /* If we have found nothing whatever to do for the goal,
+                 print a message saying nothing needs doing.  */
+
+              if (!rebuilding_makefiles
+                  /* If the update_status is success, we updated successfully
+                     or not at all.  G->changed will have been set above if
+                     any commands were actually started for this goal.  */
+                  && file->update_status == us_success && !g->changed
+                  /* Never give a message under -s or -q.  */
+                  && !silent_flag && !question_flag)
+                OS (message, 1, ((file->phony || file->cmds == 0)
+                                 ? _("Nothing to be done for '%s'.")
+                                 : _("'%s' is up to date.")),
+                    file->name);
+
+              /* This goal is finished.  Remove it from the chain.  */
+              if (lastgoal == 0)
+                goals = g->next;
+              else
+                lastgoal->next = g->next;
+
+              /* Free the storage.  */
+#ifndef CONFIG_WITH_ALLOC_CACHES
+              free (g);
+#else
+              free_dep (g);
+#endif
+
+              g = lastgoal == 0 ? goals : lastgoal->next;
+
+              if (stop)
+                break;
+            }
+          else
+            {
+              lastgoal = g;
+              g = g->next;
+            }
+        }
+
+      /* If we reached the end of the dependency graph update CONSIDERED
+         for the next pass.  */
+      if (g == 0)
+        ++considered;
+    }
+
+  if (rebuilding_makefiles)
+    {
+      touch_flag = t;
+      question_flag = q;
+      just_print_flag = n;
+    }
+
+  return status;
+}
+
+/* If we're rebuilding an included makefile that failed, and we care
+   about errors, show an error message the first time.  */
+
+void
+show_goal_error (void)
+{
+  struct goaldep *goal;
+
+  if ((goal_dep->flags & (RM_INCLUDED|RM_DONTCARE)) != RM_INCLUDED)
+    return;
+
+  for (goal = goal_list; goal; goal = goal->next)
+    if (goal_dep->file == goal->file)
+      {
+        if (goal->error)
+          {
+            OSS (error, &goal->floc, "%s: %s",
+                 goal->file->name, strerror ((int)goal->error));
+            goal->error = 0;
+          }
+        return;
+      }
+}
+
+/* If FILE is not up to date, execute the commands for it.
+   Return 0 if successful, non-0 if unsuccessful;
+   but with some flag settings, just call 'exit' if unsuccessful.
+
+   DEPTH is the depth in recursions of this function.
+   We increment it during the consideration of our dependencies,
+   then decrement it again after finding out whether this file
+   is out of date.
+
+   If there are multiple double-colon entries for FILE,
+   each is considered in turn.  */
+
+static enum update_status
+update_file (struct file *file, unsigned int depth)
+{
+  enum update_status status = us_success;
+  struct file *f;
+
+  f = file->double_colon ? file->double_colon : file;
+
+  /* Prune the dependency graph: if we've already been here on _this_
+     pass through the dependency graph, we don't have to go any further.
+     We won't reap_children until we start the next pass, so no state
+     change is possible below here until then.  */
+  if (f->considered == considered)
+    {
+      /* Check for the case where a target has been tried and failed but
+         the diagnostics haven't been issued. If we need the diagnostics
+         then we will have to continue. */
+      if (!(f->updated && f->update_status > us_none
+            && !f->dontcare && f->no_diag))
+        {
+          DBF (DB_VERBOSE, _("Pruning file '%s'.\n"));
+          return f->command_state == cs_finished ? f->update_status : us_success;
+        }
+    }
+
+  /* This loop runs until we start commands for a double colon rule, or until
+     the chain is exhausted. */
+  for (; f != 0; f = f->prev)
+    {
+      enum update_status new;
+
+      f->considered = considered;
+
+      new = update_file_1 (f, depth);
+      check_renamed (f);
+
+      /* Clean up any alloca() used during the update.  */
+      alloca (0);
+
+      /* If we got an error, don't bother with double_colon etc.  */
+      if (new && !keep_going_flag)
+        return new;
+
+      if (f->command_state == cs_running
+          || f->command_state == cs_deps_running)
+        /* Don't run other :: rules for this target until
+           this rule is finished.  */
+        return us_success;
+
+      if (new > status)
+        status = new;
+    }
+
+  /* Process the remaining rules in the double colon chain so they're marked
+     considered.  Start their prerequisites, too.  */
+  if (file->double_colon)
+    for (; f != 0 ; f = f->prev)
+      {
+        struct dep *d;
+
+        f->considered = considered;
+
+        for (d = f->deps; d != 0; d = d->next)
+          {
+            enum update_status new = update_file (d->file, depth + 1);
+            if (new > status)
+              status = new;
+          }
+      }
+
+  return status;
+}
+
+/* Show a message stating the target failed to build.  */
+
+static void
+complain (struct file *file)
+{
+  /* If this file has no_diag set then it means we tried to update it
+     before in the dontcare mode and failed. The target that actually
+     failed is not necessarily this file but could be one of its direct
+     or indirect dependencies. So traverse this file's dependencies and
+     find the one that actually caused the failure. */
+
+  struct dep *d;
+
+  for (d = file->deps; d != 0; d = d->next)
+    {
+      if (d->file->updated && d->file->update_status > us_none && file->no_diag)
+        {
+          complain (d->file);
+          break;
+        }
+    }
+
+  if (d == 0)
+    {
+      show_goal_error ();
+
+      /* Didn't find any dependencies to complain about. */
+
+#ifdef KMK
+      /* jokes */
+      if (!keep_going_flag && file->parent == 0)
+        {
+          const char *msg_joke = 0;
+          extern struct dep *goals;
+
+          /* classics */
+          if (!strcmp (file->name, "fire")
+           || !strcmp (file->name, "Fire"))
+            msg_joke = "No matches.\n";
+          else if (!strcmp (file->name, "love")
+                || !strcmp (file->name, "Love")
+                || !strcmp (file->name, "peace")
+                || !strcmp (file->name, "Peace"))
+            msg_joke = "Not war.\n";
+          else if (!strcmp (file->name, "war"))
+            msg_joke = "Don't know how to make war.\n";
+
+          /* http://xkcd.com/149/ - GNU Make bug #23273. */
+          else if ((   !strcmp (file->name, "me")
+                    && goals != 0
+                    && !strcmp (dep_name(goals), "me")
+                    && goals->next != 0
+                    && !strcmp (dep_name(goals->next), "a")
+                    && goals->next->next != 0)
+                || !strncmp (file->name, "me a ", 5))
+            msg_joke =
+# ifdef HAVE_UNISTD_H
+                   getuid () == 0 ? "Okay.\n" :
+# endif
+                       "What? Make it yourself!\n";
+          if (msg_joke)
+            {
+              fputs (msg_joke, stderr);
+              die (2);
+            }
+        }
+#endif /* KMK */
+
+      if (file->parent)
+        {
+          size_t l = strlen (file->name) + strlen (file->parent->name) + 4;
+          const char *m = _("%sNo rule to make target '%s', needed by '%s'%s");
+
+          if (!keep_going_flag)
+            fatal (NILF, l, m, "", file->name, file->parent->name, "");
+
+          error (NILF, l, m, "*** ", file->name, file->parent->name, ".");
+        }
+      else
+        {
+          size_t l = strlen (file->name) + 4;
+          const char *m = _("%sNo rule to make target '%s'%s");
+
+          if (!keep_going_flag)
+            fatal (NILF, l, m, "", file->name, "");
+
+          error (NILF, l, m, "*** ", file->name, ".");
+        }
+
+      file->no_diag = 0;
+    }
+}
+
+/* Consider a single 'struct file' and update it as appropriate.
+   Return 0 on success, or non-0 on failure.  */
+
+static enum update_status
+update_file_1 (struct file *file, unsigned int depth)
+{
+  enum update_status dep_status = us_success;
+  FILE_TIMESTAMP this_mtime;
+  int noexist, must_make, deps_changed;
+  struct file *ofile;
+  struct dep *d, *ad;
+  struct dep amake;
+  int running = 0;
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  struct file *org_file;
+  struct file *req_file;
+  struct file *f2, *f3;
+
+  /* Secondary target expansion leaves renamed files around, skip any rename
+     files to simplify multi target handling. */
+
+  check_renamed(file);
+
+  /* Remember the request file and find the primary multi target file. Always
+     work on the primary file in a multi target recipe.  */
+
+  req_file = file;
+  org_file = file;
+  if (file->multi_head != NULL)
+    {
+      if (file->multi_head == file)
+        DBS (DB_VERBOSE, (_("Considering target file '%s'  (multi head).\n"), file->name));
+      else
+        {
+          org_file = file = file->multi_head;
+          DBS (DB_VERBOSE, (_("Considering target file '%s' -> multi head '%s'.\n"),
+                              req_file->name, file->name));
+          assert (file->multi_head == file);
+        }
+    }
+  else
+#endif /* CONFIG_WITH_EXPLICIT_MULTITARGET */
+    DBF (DB_VERBOSE, _("Considering target file '%s'.\n"));
+
+  if (file->updated)
+    {
+      if (file->update_status > us_none)
+        {
+          DBF (DB_VERBOSE,
+               _("Recently tried and failed to update file '%s'.\n"));
+
+          /* If the file we tried to make is marked no_diag then no message
+             was printed about it when it failed during the makefile rebuild.
+             If we're trying to build it again in the normal rebuild, print a
+             message now.  */
+          if (file->no_diag && !file->dontcare)
+              complain (file);
+
+          return file->update_status;
+        }
+
+      DBF (DB_VERBOSE, _("File '%s' was considered already.\n"));
+      return 0;
+    }
+
+  switch (file->command_state)
+    {
+    case cs_not_started:
+    case cs_deps_running:
+      break;
+    case cs_running:
+      DBF (DB_VERBOSE, _("Still updating file '%s'.\n"));
+      return 0;
+    case cs_finished:
+      DBF (DB_VERBOSE, _("Finished updating file '%s'.\n"));
+      return file->update_status;
+    default:
+      abort ();
+    }
+
+  /* Determine whether the diagnostics will be issued should this update
+     fail. */
+  file->no_diag = file->dontcare;
+
+  ++depth;
+
+  /* Notice recursive update of the same file.  */
+  start_updating (file);
+
+  /* We might change file if we find a different one via vpath;
+     remember this one to turn off updating.  */
+  ofile = file;
+
+  /* Looking at the file's modtime beforehand allows the possibility
+     that its name may be changed by a VPATH search, and thus it may
+     not need an implicit rule.  If this were not done, the file
+     might get implicit commands that apply to its initial name, only
+     to have that name replaced with another found by VPATH search.
+
+     For multi target files check the other files and use the time
+     of the oldest / non-existing file. */
+
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  this_mtime = file_mtime (file);
+  check_renamed (file);
+  f3 = file;
+  for (f2 = file->multi_next;
+       f2 != NULL && this_mtime != NONEXISTENT_MTIME;
+       f2 = f2->multi_next)
+    if (!f2->multi_maybe)
+      {
+        FILE_TIMESTAMP second_mtime = file_mtime (f2);
+        if (second_mtime < this_mtime)
+          {
+            this_mtime = second_mtime;
+            f3 = f2;
+          }
+      }
+    /** @todo this isn't sufficient, need to introduce a truly optional type and
+     *        make |+ ignore mtime. let's hope that doesn't break too much... */
+    /* If the requested file doesn't exist, always do a remake in the
+       hope that it is recreated even if it's "maybe" target. */
+    else if (f2 == req_file && file_mtime (f2) == NONEXISTENT_MTIME)
+      {
+        this_mtime = NONEXISTENT_MTIME;
+        f3 = f2;
+        break;
+      }
+  check_renamed (f3);
+  noexist = this_mtime == NONEXISTENT_MTIME;
+  if (noexist)
+    DBS (DB_BASIC, (_("File '%s' does not exist.\n"), f3->name));
+#else /* !CONFIG_WITH_EXPLICIT_MULTITARGET */
+  this_mtime = file_mtime (file);
+  check_renamed (file);
+  noexist = this_mtime == NONEXISTENT_MTIME;
+  if (noexist)
+    DBF (DB_BASIC, _("File '%s' does not exist.\n"));
+#endif /* !CONFIG_WITH_EXPLICIT_MULTITARGET */
+  else if (ORDINARY_MTIME_MIN <= this_mtime && this_mtime <= ORDINARY_MTIME_MAX
+           && file->low_resolution_time)
+    {
+      /* Avoid spurious rebuilds due to low resolution time stamps.  */
+      int ns = FILE_TIMESTAMP_NS (this_mtime);
+      if (ns != 0)
+        OS (error, NILF,
+            _("*** Warning: .LOW_RESOLUTION_TIME file '%s' has a high resolution time stamp"),
+            file->name);
+      this_mtime += FILE_TIMESTAMPS_PER_S - 1 - ns;
+    }
+
+  must_make = noexist;
+
+  /* If file was specified as a target with no commands,
+     come up with some default commands.  */
+
+  if (!file->phony && file->cmds == 0 && !file->tried_implicit)
+    {
+      if (try_implicit_rule (file, depth))
+        DBF (DB_IMPLICIT, _("Found an implicit rule for '%s'.\n"));
+      else
+        DBF (DB_IMPLICIT, _("No implicit rule found for '%s'.\n"));
+      file->tried_implicit = 1;
+    }
+  if (file->cmds == 0 && !file->is_target
+      && default_file != 0 && default_file->cmds != 0)
+    {
+      DBF (DB_IMPLICIT, _("Using default recipe for '%s'.\n"));
+      file->cmds = default_file->cmds;
+    }
+
+  /* Update all non-intermediate files we depend on, if necessary, and see
+     whether any of them is more recent than this file.  We need to walk our
+     deps, AND the deps of any also_make targets to ensure everything happens
+     in the correct order.
+
+     bird: For explicit multitarget rules we must iterate all the output
+     files to get the correct picture.  The special .MUST_MAKE
+     target variable call is also done from this context. */
+
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+ assert (file == org_file);
+ for (f2 = file; f2; file = f2 = f2->multi_next)
+ {
+#endif
+  amake.file = file;
+  amake.next = file->also_make;
+  ad = &amake;
+  while (ad)
+    {
+      struct dep *lastd = 0;
+
+      /* Find the deps we're scanning */
+      d = ad->file->deps;
+      ad = ad->next;
+
+      while (d)
+        {
+          enum update_status new;
+          FILE_TIMESTAMP mtime;
+          int maybe_make;
+          int dontcare = 0;
+
+          check_renamed (d->file);
+
+          mtime = file_mtime (d->file);
+          check_renamed (d->file);
+
+          if (is_updating (d->file))
+            {
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+              /* silently ignore the order-only dep hack. */
+              if (file->multi_maybe && d->file == org_file)
+                {
+                  lastd = d;
+                  d = d->next;
+                  continue;
+                }
+#endif
+
+              OSS (error, NILF, _("Circular %s <- %s dependency dropped."),
+                   file->name, d->file->name);
+              /* We cannot free D here because our the caller will still have
+                 a reference to it when we were called recursively via
+                 check_dep below.  */
+              if (lastd == 0)
+                file->deps = d->next;
+              else
+                lastd->next = d->next;
+              d = d->next;
+              continue;
+            }
+
+          d->file->parent = file;
+          maybe_make = must_make;
+
+          /* Inherit dontcare flag from our parent. */
+          if (rebuilding_makefiles)
+            {
+              dontcare = d->file->dontcare;
+              d->file->dontcare = file->dontcare;
+            }
+
+          new = check_dep (d->file, depth, this_mtime, &maybe_make);
+          if (new > dep_status)
+            dep_status = new;
+
+          /* Restore original dontcare flag. */
+          if (rebuilding_makefiles)
+            d->file->dontcare = dontcare;
+
+          if (! d->ignore_mtime)
+            must_make = maybe_make;
+
+          check_renamed (d->file);
+
+          {
+            register struct file *f = d->file;
+            if (f->double_colon)
+              f = f->double_colon;
+            do
+              {
+                running |= (f->command_state == cs_running
+                            || f->command_state == cs_deps_running);
+                f = f->prev;
+              }
+            while (f != 0);
+          }
+
+          if (dep_status && !keep_going_flag)
+            break;
+
+          if (!running)
+            /* The prereq is considered changed if the timestamp has changed
+               while it was built, OR it doesn't exist.  */
+            d->changed = ((file_mtime (d->file) != mtime)
+                          || (mtime == NONEXISTENT_MTIME));
+
+          lastd = d;
+          d = d->next;
+        }
+    }
+
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+    if (dep_status != 0 && !keep_going_flag)
+      break;
+  }
+  file = org_file;
+#endif
+
+#ifdef CONFIG_WITH_DOT_MUST_MAKE
+  /* Check with the .MUST_MAKE target variable if it's
+     not already decided to make the file.  */
+
+# ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  if (!must_make)
+    for (f2 = org_file; f2 && !must_make; f2 = f2->multi_next)
+      must_make = call_must_make_target_var (f2, depth);
+# else
+  if (!must_make)
+    must_make = call_must_make_target_var (file, depth);
+# endif
+#endif /* CONFIG_WITH_DOT_MUST_MAKE */
+
+  /* Now we know whether this target needs updating.
+     If it does, update all the intermediate files we depend on.  */
+
+  if (must_make || always_make_flag)
+    {
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+     for (file = f2 = org_file; f2; file = f2 = f2->multi_next)
+#endif
+      for (d = file->deps; d != 0; d = d->next)
+        if (d->file->intermediate)
+          {
+            enum update_status new;
+            int dontcare = 0;
+
+            FILE_TIMESTAMP mtime = file_mtime (d->file);
+            check_renamed (d->file);
+            d->file->parent = file;
+
+            /* Inherit dontcare flag from our parent. */
+            if (rebuilding_makefiles)
+              {
+                dontcare = d->file->dontcare;
+                d->file->dontcare = file->dontcare;
+              }
+
+            /* We may have already considered this file, when we didn't know
+               we'd need to update it.  Force update_file() to consider it and
+               not prune it.  */
+            d->file->considered = 0;
+
+            new = update_file (d->file, depth);
+            if (new > dep_status)
+              dep_status = new;
+
+            /* Restore original dontcare flag. */
+            if (rebuilding_makefiles)
+              d->file->dontcare = dontcare;
+
+            check_renamed (d->file);
+
+            {
+              register struct file *f = d->file;
+              if (f->double_colon)
+                f = f->double_colon;
+              do
+                {
+                  running |= (f->command_state == cs_running
+                              || f->command_state == cs_deps_running);
+                  f = f->prev;
+                }
+              while (f != 0);
+            }
+
+            if (dep_status && !keep_going_flag)
+              break;
+
+            if (!running)
+              d->changed = ((file->phony && file->cmds != 0)
+                            || file_mtime (d->file) != mtime);
+          }
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+      file = org_file;
+#endif
+    }
+
+  finish_updating (file);
+  finish_updating (ofile);
+
+  DBF (DB_VERBOSE, _("Finished prerequisites of target file '%s'.\n"));
+
+  if (running)
+    {
+      set_command_state (file, cs_deps_running);
+      --depth;
+      DBF (DB_VERBOSE, _("The prerequisites of '%s' are being made.\n"));
+      return 0;
+    }
+
+  /* If any dependency failed, give up now.  */
+
+  if (dep_status)
+    {
+      /* I'm not sure if we can't just assign dep_status...  */
+      file->update_status = dep_status == us_none ? us_failed : dep_status;
+      notice_finished_file (file);
+
+      --depth;
+
+      DBF (DB_VERBOSE, _("Giving up on target file '%s'.\n"));
+
+      if (depth == 0 && keep_going_flag
+          && !just_print_flag && !question_flag)
+        OS (error, NILF,
+            _("Target '%s' not remade because of errors."), file->name);
+
+      return dep_status;
+    }
+
+  if (file->command_state == cs_deps_running)
+    /* The commands for some deps were running on the last iteration, but
+       they have finished now.  Reset the command_state to not_started to
+       simplify later bookkeeping.  It is important that we do this only
+       when the prior state was cs_deps_running, because that prior state
+       was definitely propagated to FILE's also_make's by set_command_state
+       (called above), but in another state an also_make may have
+       independently changed to finished state, and we would confuse that
+       file's bookkeeping (updated, but not_started is bogus state).  */
+    set_command_state (file, cs_not_started);
+
+  /* Now record which prerequisites are more
+     recent than this file, so we can define $?.  */
+
+  deps_changed = 0;
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+ for (file = f2 = org_file; f2; file = f2 = f2->multi_next)
+#endif
+  for (d = file->deps; d != 0; d = d->next)
+    {
+      FILE_TIMESTAMP d_mtime = file_mtime (d->file);
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+        if (d->file == file && file->multi_maybe)
+          continue;
+#endif
+      check_renamed (d->file);
+
+      if (! d->ignore_mtime)
+        {
+#if 1
+          /* %%% In version 4, remove this code completely to
+           implement not remaking deps if their deps are newer
+           than their parents.  */
+          if (d_mtime == NONEXISTENT_MTIME && !d->file->intermediate)
+            /* We must remake if this dep does not
+               exist and is not intermediate.  */
+            must_make = 1;
+#endif
+
+          /* Set DEPS_CHANGED if this dep actually changed.  */
+          deps_changed |= d->changed;
+        }
+
+      /* Set D->changed if either this dep actually changed,
+         or its dependent, FILE, is older or does not exist.  */
+      d->changed |= noexist || d_mtime > this_mtime;
+
+      if (!noexist && ISDB (DB_BASIC|DB_VERBOSE))
+        {
+          const char *fmt = 0;
+
+          if (d->ignore_mtime)
+            {
+              if (ISDB (DB_VERBOSE))
+                fmt = _("Prerequisite '%s' is order-only for target '%s'.\n");
+            }
+          else if (d_mtime == NONEXISTENT_MTIME)
+            {
+              if (ISDB (DB_BASIC))
+                fmt = _("Prerequisite '%s' of target '%s' does not exist.\n");
+            }
+          else if (d->changed)
+            {
+              if (ISDB (DB_BASIC))
+                fmt = _("Prerequisite '%s' is newer than target '%s'.\n");
+            }
+          else if (ISDB (DB_VERBOSE))
+            fmt = _("Prerequisite '%s' is older than target '%s'.\n");
+
+          if (fmt)
+            {
+              print_spaces (depth);
+              printf (fmt, dep_name (d), file->name);
+              fflush (stdout);
+            }
+        }
+    }
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  file = org_file;
+#endif
+
+  /* Here depth returns to the value it had when we were called.  */
+  depth--;
+
+  if (file->double_colon && file->deps == 0)
+    {
+      must_make = 1;
+      DBF (DB_BASIC,
+           _("Target '%s' is double-colon and has no prerequisites.\n"));
+    }
+  else if (!noexist && file->is_target && !deps_changed && file->cmds == 0
+           && !always_make_flag)
+    {
+      must_make = 0;
+      DBF (DB_VERBOSE,
+           _("No recipe for '%s' and no prerequisites actually changed.\n"));
+    }
+  else if (!must_make && file->cmds != 0 && always_make_flag)
+    {
+      must_make = 1;
+      DBF (DB_VERBOSE, _("Making '%s' due to always-make flag.\n"));
+    }
+
+  if (!must_make)
+    {
+      if (ISDB (DB_VERBOSE))
+        {
+          print_spaces (depth);
+          printf (_("No need to remake target '%s'"), file->name);
+          if (!streq (file->name, file->hname))
+              printf (_("; using VPATH name '%s'"), file->hname);
+          puts (".");
+          fflush (stdout);
+        }
+
+      notice_finished_file (file);
+
+      /* Since we don't need to remake the file, convert it to use the
+         VPATH filename if we found one.  hfile will be either the
+         local name if no VPATH or the VPATH name if one was found.  */
+
+      while (file)
+        {
+          file->name = file->hname;
+          file = file->prev;
+        }
+
+      return 0;
+    }
+
+  DBF (DB_BASIC, _("Must remake target '%s'.\n"));
+
+  /* It needs to be remade.  If it's VPATH and not reset via GPATH, toss the
+     VPATH.  */
+  if (!streq (file->name, file->hname))
+    {
+      DB (DB_BASIC, (_("  Ignoring VPATH name '%s'.\n"), file->hname));
+      file->ignore_vpath = 1;
+    }
+
+  /* Now, take appropriate actions to remake the file.  */
+  remake_file (file);
+
+  if (file->command_state != cs_finished)
+    {
+      DBF (DB_VERBOSE, _("Recipe of '%s' is being run.\n"));
+      return 0;
+    }
+
+  switch (file->update_status)
+    {
+    case us_failed:
+      DBF (DB_BASIC, _("Failed to remake target file '%s'.\n"));
+      break;
+    case us_success:
+      DBF (DB_BASIC, _("Successfully remade target file '%s'.\n"));
+      break;
+    case us_question:
+      DBF (DB_BASIC, _("Target file '%s' needs to be remade under -q.\n"));
+      break;
+    case us_none:
+      break;
+    }
+
+  file->updated = 1;
+  return file->update_status;
+}
+
+#ifdef CONFIG_WITH_DOT_MUST_MAKE
+/* Consider the .MUST_MAKE target variable if present.
+
+   Returns 1 if must remake, 0 if not.
+
+   The deal is that .MUST_MAKE returns non-zero if it thinks the target needs
+   updating.  We have to initialize file variables (for the sake of pattern
+   vars) and set the most important file variables before calling (expanding)
+   the .MUST_MAKE variable.
+
+   The file variables keeping the dependency lists, $+, $^, $? and $| are not
+   available at this point because $? depends on things happening after we've
+   decided to make the file.  So, to keep things simple all 4 of them are
+   undefined in this call.  */
+static int
+call_must_make_target_var (struct file *file, unsigned int depth)
+{
+  struct variable *var;
+  unsigned char ch;
+  const char *str;
+
+  if (file->variables)
+    {
+      var = lookup_variable_in_set (".MUST_MAKE", sizeof (".MUST_MAKE") - 1,
+                                    file->variables->set);
+      if (var)
+        {
+          initialize_file_variables (file, 0);
+          set_file_variables (file, 1 /* called early, no dep lists please */);
+
+          str = variable_expand_for_file_2 (NULL,
+                                            var->value, var->value_length,
+                                            file, NULL);
+
+          /* Stripped string should be non-zero.  */
+
+          ch = *str;
+          while (ISSPACE (ch))
+            ch = *++str;
+
+          if (ch != '\0')
+            {
+              if (ISDB (DB_BASIC))
+                {
+                  print_spaces (depth);
+                  printf (_(".MUST_MAKE returned `%s' for target `%s'.\n"),
+                          str, file->name);
+                }
+              return 1;
+            }
+        }
+    }
+  return 0;
+}
+#endif /* CONFIG_WITH_DOT_MUST_MAKE */
+
+#ifdef CONFIG_WITH_DOT_IS_CHANGED
+/* Consider the .IS_CHANGED target variable if present.
+
+   Returns 1 if the file should be considered modified, 0 if not.
+
+   The calling context and restrictions are the same as for .MUST_MAKE.
+   Make uses the information from this 'function' for determining whether to
+   make a file which lists this as a prerequisite.  So, this is the feature you
+   use to check MD5 sums, file sizes, time stamps and the like with data from
+   a previous run.
+
+   FIXME: Would be nice to know which file is currently being considered.
+   FIXME: Is currently not invoked for intermediate files.  */
+static int
+call_is_changed_target_var (struct file *file)
+{
+  struct variable *var;
+  unsigned char ch;
+  const char *str;
+
+  if (file->variables)
+    {
+      var = lookup_variable_in_set (".IS_CHANGED", sizeof (".IS_CHANGED") - 1,
+                                    file->variables->set);
+      if (var)
+        {
+          initialize_file_variables (file, 0);
+          set_file_variables (file, 1 /* called early, no dep lists please */);
+
+          str = variable_expand_for_file_2 (NULL,
+                                            var->value, var->value_length,
+                                            file, NULL);
+
+          /* stripped string should be non-zero.  */
+          do
+            ch = *str++;
+          while (ISSPACE (ch));
+
+          return (ch != '\0');
+        }
+    }
+  return 0;
+}
+#endif /* CONFIG_WITH_DOT_IS_CHANGED */
+
+/* Set FILE's 'updated' flag and re-check its mtime and the mtime's of all
+   files listed in its 'also_make' member.  Under -t, this function also
+   touches FILE.
+
+   On return, FILE->update_status will no longer be us_none if it was.  */
+
+void
+notice_finished_file (struct file *file)
+{
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  struct file *f2;
+#endif
+  struct dep *d;
+  int ran = file->command_state == cs_running;
+  int touched = 0;
+  DB (DB_JOBS, (_("notice_finished_file - entering: file=%p `%s' update_status=%d command_state=%d\n"), /* bird */
+                  (void *) file, file->name, file->update_status, file->command_state));
+
+  file->command_state = cs_finished;
+  file->updated = 1;
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  if (file->multi_head)
+    {
+      assert (file == file->multi_head);
+      for (f2 = file->multi_next; f2 != 0; f2 = f2->multi_next)
+        {
+          f2->command_state = cs_finished;
+          f2->updated = 1;
+        }
+    }
+#endif
+
+#ifdef CONFIG_WITH_EXTENDED_NOTPARALLEL
+  /* update not_parallel if the file was flagged for that. */
+  if (   ran
+      && (file->command_flags & (COMMANDS_NOTPARALLEL | COMMANDS_NO_COMMANDS))
+         == COMMANDS_NOTPARALLEL)
+    {
+      DB (DB_KMK, (_("not_parallel %d -> %d (file=%p `%s') [notice_finished_file]\n"), not_parallel,
+                   not_parallel - 1, (void *) file, file->name));
+      assert(not_parallel >= 1);
+      --not_parallel;
+    }
+#endif
+
+  if (touch_flag
+      /* The update status will be:
+           us_success   if 0 or more commands (+ or ${MAKE}) were run and won;
+           us_none      if this target was not remade;
+           >us_none     if some commands were run and lost.
+         We touch the target if it has commands which either were not run
+         or won when they ran (i.e. status is 0).  */
+      && file->update_status == us_success)
+    {
+      if (file->cmds != 0 && file->cmds->any_recurse)
+        {
+          /* If all the command lines were recursive,
+             we don't want to do the touching.  */
+          unsigned int i;
+          for (i = 0; i < file->cmds->ncommand_lines; ++i)
+            if (!(file->cmds->lines_flags[i] & COMMANDS_RECURSE))
+              goto have_nonrecursing;
+        }
+      else
+        {
+        have_nonrecursing:
+          if (file->phony)
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+            {
+              file->update_status = us_success;
+              if (file->multi_head)
+                for (f2 = file->multi_next; f2 != 0; f2 = f2->multi_next)
+                  f2->update_status = us_success;
+            }
+#else
+            file->update_status = us_success;
+#endif
+          /* According to POSIX, -t doesn't affect targets with no cmds.  */
+          else if (file->cmds != 0)
+            {
+              /* Should set file's modification date and do nothing else.  */
+              file->update_status = touch_file (file);
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+              if (file->multi_head)
+                for (f2 = file->multi_next; f2 != 0; f2 = f2->multi_next)
+                  {
+                    /* figure out this, touch if it exist ignore otherwise? */
+                  }
+#endif
+
+              /* Pretend we ran a real touch command, to suppress the
+                 "'foo' is up to date" message.  */
+              commands_started++;
+
+              /* Request for the timestamp to be updated (and distributed
+                 to the double-colon entries). Simply setting ran=1 would
+                 almost have done the trick, but messes up with the also_make
+                 updating logic below.  */
+              touched = 1;
+            }
+        }
+    }
+
+  if (file->mtime_before_update == UNKNOWN_MTIME)
+    file->mtime_before_update = file->last_mtime;
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  if (file->multi_head)
+    for (f2 = file->multi_next; f2 != 0; f2 = f2->multi_next)
+      if (f2->mtime_before_update == UNKNOWN_MTIME)
+        f2->mtime_before_update = f2->last_mtime;
+#endif
+
+  if ((ran && !file->phony) || touched)
+    {
+      int i = 0;
+
+      /* If -n, -t, or -q and all the commands are recursive, we ran them so
+         really check the target's mtime again.  Otherwise, assume the target
+         would have been updated. */
+
+      if ((question_flag || just_print_flag || touch_flag) && file->cmds)
+        {
+          for (i = file->cmds->ncommand_lines; i > 0; --i)
+            if (! (file->cmds->lines_flags[i-1] & COMMANDS_RECURSE))
+              break;
+        }
+
+      /* If there were no commands at all, it's always new. */
+
+      else if (file->is_target && file->cmds == 0)
+        i = 1;
+
+      file->last_mtime = i == 0 ? UNKNOWN_MTIME : NEW_MTIME;
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+      if (file->multi_head)
+        for (f2 = file->multi_next; f2 != 0; f2 = f2->multi_next)
+          file->last_mtime = i == 0 ? UNKNOWN_MTIME : NEW_MTIME; /*??*/
+#endif
+    }
+
+  if (file->double_colon)
+    {
+      /* If this is a double colon rule and it is the last one to be
+         updated, propagate the change of modification time to all the
+         double-colon entries for this file.
+
+         We do it on the last update because it is important to handle
+         individual entries as separate rules with separate timestamps
+         while they are treated as targets and then as one rule with the
+         unified timestamp when they are considered as a prerequisite
+         of some target.  */
+
+      struct file *f;
+      FILE_TIMESTAMP max_mtime = file->last_mtime;
+
+      /* Check that all rules were updated and at the same time find
+         the max timestamp.  We assume UNKNOWN_MTIME is newer then
+         any other value.  */
+      for (f = file->double_colon; f != 0 && f->updated; f = f->prev)
+        if (max_mtime != UNKNOWN_MTIME
+            && (f->last_mtime == UNKNOWN_MTIME || f->last_mtime > max_mtime))
+          max_mtime = f->last_mtime;
+
+      if (f == 0)
+        for (f = file->double_colon; f != 0; f = f->prev)
+          f->last_mtime = max_mtime;
+    }
+
+  if (ran && file->update_status != us_none)
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+   {
+#endif
+    /* We actually tried to update FILE, which has
+       updated its also_make's as well (if it worked).
+       If it didn't work, it wouldn't work again for them.
+       So mark them as updated with the same status.  */
+    for (d = file->also_make; d != 0; d = d->next)
+      {
+        d->file->command_state = cs_finished;
+        d->file->updated = 1;
+        d->file->update_status = file->update_status;
+
+        if (ran && !d->file->phony)
+          /* Fetch the new modification time.
+             We do this instead of just invalidating the cached time
+             so that a vpath_search can happen.  Otherwise, it would
+             never be done because the target is already updated.  */
+          f_mtime (d->file, 0);
+      }
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+    /* Same as above but for explicit multi target rules. */
+    if (file->multi_head)
+      for (f2 = file->multi_next; f2 != 0; f2 = f2->multi_next)
+        {
+          f2->update_status = file->update_status;
+          if (!f2->phony)
+            f_mtime (f2, 0);
+        }
+   }
+#endif
+  else if (file->update_status == us_none)
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+    {
+      /* Nothing was done for FILE, but it needed nothing done.
+         So mark it now as "succeeded".  */
+      file->update_status = 0;
+      if (file->multi_head)
+        for (f2 = file->multi_next; f2 != 0; f2 = f2->multi_next)
+          f2->update_status = 0;
+    }
+#else
+    /* Nothing was done for FILE, but it needed nothing done.
+       So mark it now as "succeeded".  */
+    file->update_status = us_success;
+#endif
+
+#ifdef CONFIG_WITH_MEMORY_OPTIMIZATIONS
+    /* We're done with this command, so free the memory held by the chopped
+       command lines. Saves heap for the compilers & linkers. */
+    if (file->cmds && file->cmds->command_lines)
+      free_chopped_commands (file->cmds);
+#endif
+}
+
+/* Check whether another file (whose mtime is THIS_MTIME) needs updating on
+   account of a dependency which is file FILE.  If it does, store 1 in
+   *MUST_MAKE_PTR.  In the process, update any non-intermediate files that
+   FILE depends on (including FILE itself).  Return nonzero if any updating
+   failed.  */
+
+static enum update_status
+check_dep (struct file *file, unsigned int depth,
+           FILE_TIMESTAMP this_mtime, int *must_make_ptr)
+{
+  struct file *ofile;
+  struct dep *d;
+  enum update_status dep_status = us_success;
+
+  ++depth;
+  start_updating (file);
+
+  /* We might change file if we find a different one via vpath;
+     remember this one to turn off updating.  */
+  ofile = file;
+
+  if (file->phony || !file->intermediate)
+    {
+      /* If this is a non-intermediate file, update it and record whether it
+         is newer than THIS_MTIME.  */
+      FILE_TIMESTAMP mtime;
+      dep_status = update_file (file, depth);
+      check_renamed (file);
+      mtime = file_mtime (file);
+      check_renamed (file);
+      if (mtime == NONEXISTENT_MTIME || mtime > this_mtime)
+        *must_make_ptr = 1;
+#ifdef CONFIG_WITH_DOT_IS_CHANGED
+      else if (   *must_make_ptr == 0
+               && call_is_changed_target_var (file))
+        *must_make_ptr = 1;
+#endif /* CONFIG_WITH_DOT_IS_CHANGED */
+    }
+  else
+    {
+      /* FILE is an intermediate file.  */
+      FILE_TIMESTAMP mtime;
+
+      if (!file->phony && file->cmds == 0 && !file->tried_implicit)
+        {
+          if (try_implicit_rule (file, depth))
+            DBF (DB_IMPLICIT, _("Found an implicit rule for '%s'.\n"));
+          else
+            DBF (DB_IMPLICIT, _("No implicit rule found for '%s'.\n"));
+          file->tried_implicit = 1;
+        }
+      if (file->cmds == 0 && !file->is_target
+          && default_file != 0 && default_file->cmds != 0)
+        {
+          DBF (DB_IMPLICIT, _("Using default commands for '%s'.\n"));
+          file->cmds = default_file->cmds;
+        }
+
+      check_renamed (file);
+      mtime = file_mtime (file);
+      check_renamed (file);
+      if (mtime != NONEXISTENT_MTIME && mtime > this_mtime)
+        /* If the intermediate file actually exists and is newer, then we
+           should remake from it.  */
+        *must_make_ptr = 1;
+      else
+        {
+          /* Otherwise, update all non-intermediate files we depend on, if
+             necessary, and see whether any of them is more recent than the
+             file on whose behalf we are checking.  */
+          struct dep *ld;
+          int deps_running = 0;
+
+          /* If this target is not running, set it's state so that we check it
+             fresh.  It could be it was checked as part of an order-only
+             prerequisite and so wasn't rebuilt then, but should be now.  */
+          if (file->command_state != cs_running)
+            {
+              /* If the target was waiting for a dependency it has to be
+                 reconsidered, as that dependency might have finished.  */
+              if (file->command_state == cs_deps_running)
+                file->considered = 0;
+
+              set_command_state (file, cs_not_started);
+            }
+
+          ld = 0;
+          d = file->deps;
+          while (d != 0)
+            {
+              enum update_status new;
+              int maybe_make;
+
+              if (is_updating (d->file))
+                {
+                  OSS (error, NILF, _("Circular %s <- %s dependency dropped."),
+                       file->name, d->file->name);
+                  if (ld == 0)
+                    {
+                      file->deps = d->next;
+                      free_dep (d);
+                      d = file->deps;
+                    }
+                  else
+                    {
+                      ld->next = d->next;
+                      free_dep (d);
+                      d = ld->next;
+                    }
+                  continue;
+                }
+
+              d->file->parent = file;
+              maybe_make = *must_make_ptr;
+              new = check_dep (d->file, depth, this_mtime, &maybe_make);
+              if (new > dep_status)
+                dep_status = new;
+
+              if (! d->ignore_mtime)
+                *must_make_ptr = maybe_make;
+              check_renamed (d->file);
+              if (dep_status && !keep_going_flag)
+                break;
+
+              if (d->file->command_state == cs_running
+                  || d->file->command_state == cs_deps_running)
+                deps_running = 1;
+
+              ld = d;
+              d = d->next;
+            }
+
+          if (deps_running)
+            /* Record that some of FILE's deps are still being made.
+               This tells the upper levels to wait on processing it until the
+               commands are finished.  */
+            set_command_state (file, cs_deps_running);
+        }
+    }
+
+  finish_updating (file);
+  finish_updating (ofile);
+
+  return dep_status;
+}
+
+/* Touch FILE.  Return us_success if successful, us_failed if not.  */
+
+#define TOUCH_ERROR(call) do{ perror_with_name ((call), file->name);    \
+                              return us_failed; }while(0)
+
+static enum update_status
+touch_file (struct file *file)
+{
+  if (!silent_flag)
+    OS (message, 0, "touch %s", file->name);
+
+  /* Print-only (-n) takes precedence over touch (-t).  */
+  if (just_print_flag)
+    return us_success;
+
+#ifndef NO_ARCHIVES
+  if (ar_name (file->name))
+    return ar_touch (file->name) ? us_failed : us_success;
+  else
+#endif
+    {
+      int fd;
+
+      EINTRLOOP (fd, open (file->name, O_RDWR | O_CREAT, 0666));
+      if (fd < 0)
+        TOUCH_ERROR ("touch: open: ");
+      else
+        {
+          struct stat statbuf;
+          char buf = 'x';
+          int e;
+
+          EINTRLOOP (e, fstat (fd, &statbuf));
+          if (e < 0)
+            TOUCH_ERROR ("touch: fstat: ");
+          /* Rewrite character 0 same as it already is.  */
+          EINTRLOOP (e, read (fd, &buf, 1));
+          if (e < 0)
+            TOUCH_ERROR ("touch: read: ");
+          {
+            off_t o;
+            EINTRLOOP (o, lseek (fd, 0L, 0));
+            if (o < 0L)
+              TOUCH_ERROR ("touch: lseek: ");
+          }
+          EINTRLOOP (e, write (fd, &buf, 1));
+          if (e < 0)
+            TOUCH_ERROR ("touch: write: ");
+
+          /* If file length was 0, we just changed it, so change it back.  */
+          if (statbuf.st_size == 0)
+            {
+              (void) close (fd);
+              EINTRLOOP (fd, open (file->name, O_RDWR | O_TRUNC, 0666));
+              if (fd < 0)
+                TOUCH_ERROR ("touch: open: ");
+            }
+          (void) close (fd);
+        }
+    }
+
+  return us_success;
+}
+
+/* Having checked and updated the dependencies of FILE,
+   do whatever is appropriate to remake FILE itself.
+   Return the status from executing FILE's commands.  */
+
+static void
+remake_file (struct file *file)
+{
+#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
+  assert(file->multi_head == NULL || file->multi_head == file);
+#endif
+
+  if (file->cmds == 0)
+    {
+      if (file->phony)
+        /* Phony target.  Pretend it succeeded.  */
+        file->update_status = us_success;
+      else if (file->is_target)
+        /* This is a nonexistent target file we cannot make.
+           Pretend it was successfully remade.  */
+        file->update_status = us_success;
+      else
+        {
+          /* This is a dependency file we cannot remake.  Fail.  */
+          if (!rebuilding_makefiles || !file->dontcare)
+            complain (file);
+          file->update_status = us_failed;
+        }
+    }
+  else
+    {
+      chop_commands (file->cmds);
+
+      /* The normal case: start some commands.  */
+      if (!touch_flag || file->cmds->any_recurse)
+        {
+          execute_file_commands (file);
+          return;
+        }
+
+      /* This tells notice_finished_file it is ok to touch the file.  */
+      file->update_status = us_success;
+    }
+
+  /* This does the touching under -t.  */
+  notice_finished_file (file);
+}
+
+/* Return the mtime of a file, given a 'struct file'.
+   Caches the time in the struct file to avoid excess stat calls.
+
+   If the file is not found, and SEARCH is nonzero, VPATH searching and
+   replacement is done.  If that fails, a library (-lLIBNAME) is tried and
+   the library's actual name (/lib/libLIBNAME.a, etc.) is substituted into
+   FILE.  */
+
+FILE_TIMESTAMP
+f_mtime (struct file *file, int search)
+{
+  FILE_TIMESTAMP mtime;
+  int propagate_timestamp;
+
+  /* File's mtime is not known; must get it from the system.  */
+
+#ifndef NO_ARCHIVES
+  if (ar_name (file->name))
+    {
+      /* This file is an archive-member reference.  */
+
+      char *arname, *memname;
+      struct file *arfile;
+      time_t member_date;
+
+      /* Find the archive's name.  */
+      ar_parse_name (file->name, &arname, &memname);
+
+      /* Find the modification time of the archive itself.
+         Also allow for its name to be changed via VPATH search.  */
+      arfile = lookup_file (arname);
+      if (arfile == 0)
+        arfile = enter_file (strcache_add (arname));
+      mtime = f_mtime (arfile, search);
+      check_renamed (arfile);
+      if (search && strcmp (arfile->hname, arname))
+        {
+          /* The archive's name has changed.
+             Change the archive-member reference accordingly.  */
+
+          char *name;
+          unsigned int arlen, memlen;
+
+          arlen = strlen (arfile->hname);
+          memlen = strlen (memname);
+
+          name = alloca (arlen + 1 + memlen + 2);
+          memcpy (name, arfile->hname, arlen);
+          name[arlen] = '(';
+          memcpy (name + arlen + 1, memname, memlen);
+          name[arlen + 1 + memlen] = ')';
+          name[arlen + 1 + memlen + 1] = '\0';
+
+          /* If the archive was found with GPATH, make the change permanent;
+             otherwise defer it until later.  */
+          if (arfile->name == arfile->hname)
+            rename_file (file, strcache_add (name));
+          else
+            rehash_file (file, strcache_add (name));
+          check_renamed (file);
+        }
+
+      free (arname);
+
+      file->low_resolution_time = 1;
+
+      if (mtime == NONEXISTENT_MTIME)
+        /* The archive doesn't exist, so its members don't exist either.  */
+        return NONEXISTENT_MTIME;
+
+      member_date = ar_member_date (file->hname);
+      mtime = (member_date == (time_t) -1
+               ? NONEXISTENT_MTIME
+               : file_timestamp_cons (file->hname, member_date, 0));
+    }
+  else
+#endif
+    {
+      mtime = name_mtime (file->name);
+
+      if (mtime == NONEXISTENT_MTIME && search && !file->ignore_vpath)
+        {
+          /* If name_mtime failed, search VPATH.  */
+          const char *name = vpath_search (file->name, &mtime, NULL, NULL);
+          if (name
+              /* Last resort, is it a library (-lxxx)?  */
+              || (file->name[0] == '-' && file->name[1] == 'l'
+                  && (name = library_search (file->name, &mtime)) != 0))
+            {
+              int name_len;
+
+              if (mtime != UNKNOWN_MTIME)
+                /* vpath_search and library_search store UNKNOWN_MTIME
+                   if they didn't need to do a stat call for their work.  */
+                file->last_mtime = mtime;
+
+              /* If we found it in VPATH, see if it's in GPATH too; if so,
+                 change the name right now; if not, defer until after the
+                 dependencies are updated. */
+#ifndef VMS
+              name_len = strlen (name) - strlen (file->name) - 1;
+#else
+              name_len = strlen (name) - strlen (file->name);
+              if (name[name_len - 1] == '/')
+                  name_len--;
+#endif
+              if (gpath_search (name, name_len))
+                {
+                  rename_file (file, name);
+                  check_renamed (file);
+                  return file_mtime (file);
+                }
+
+              rehash_file (file, name);
+              check_renamed (file);
+              /* If the result of a vpath search is -o or -W, preserve it.
+                 Otherwise, find the mtime of the resulting file.  */
+              if (mtime != OLD_MTIME && mtime != NEW_MTIME)
+                mtime = name_mtime (name);
+            }
+        }
+    }
+
+  /* Files can have bogus timestamps that nothing newly made will be
+     "newer" than.  Updating their dependents could just result in loops.
+     So notify the user of the anomaly with a warning.
+
+     We only need to do this once, for now. */
+
+  if (!clock_skew_detected
+      && mtime != NONEXISTENT_MTIME && mtime != NEW_MTIME
+      && !file->updated)
+    {
+      static FILE_TIMESTAMP adjusted_now;
+
+      FILE_TIMESTAMP adjusted_mtime = mtime;
+
+#if defined(WINDOWS32) || defined(__MSDOS__)
+      /* Experimentation has shown that FAT filesystems can set file times
+         up to 3 seconds into the future!  Play it safe.  */
+
+#define FAT_ADJ_OFFSET  (FILE_TIMESTAMP) 3
+
+      FILE_TIMESTAMP adjustment = FAT_ADJ_OFFSET << FILE_TIMESTAMP_LO_BITS;
+      if (ORDINARY_MTIME_MIN + adjustment <= adjusted_mtime)
+        adjusted_mtime -= adjustment;
+#elif defined(__EMX__)
+      /* FAT filesystems round time to the nearest even second!
+         Allow for any file (NTFS or FAT) to perhaps suffer from this
+         brain damage.  */
+      FILE_TIMESTAMP adjustment = (((FILE_TIMESTAMP_S (adjusted_mtime) & 1) == 0
+                     && FILE_TIMESTAMP_NS (adjusted_mtime) == 0)
+                    ? (FILE_TIMESTAMP) 1 << FILE_TIMESTAMP_LO_BITS
+                    : 0);
+#endif
+
+      /* If the file's time appears to be in the future, update our
+         concept of the present and try once more.  */
+      if (adjusted_now < adjusted_mtime)
+        {
+          int resolution;
+          FILE_TIMESTAMP now = file_timestamp_now (&resolution);
+          adjusted_now = now + (resolution - 1);
+          if (adjusted_now < adjusted_mtime)
+            {
+#ifdef NO_FLOAT
+              OS (error, NILF,
+                  _("Warning: File '%s' has modification time in the future"),
+                  file->name);
+#else
+              double from_now =
+                (FILE_TIMESTAMP_S (mtime) - FILE_TIMESTAMP_S (now)
+                 + ((FILE_TIMESTAMP_NS (mtime) - FILE_TIMESTAMP_NS (now))
+                    / 1e9));
+              char from_now_string[100];
+
+              if (from_now >= 99 && from_now <= ULONG_MAX)
+                sprintf (from_now_string, "%lu", (unsigned long) from_now);
+              else
+                sprintf (from_now_string, "%.2g", from_now);
+              OSS (error, NILF,
+                   _("Warning: File '%s' has modification time %s s in the future"),
+                   file->name, from_now_string);
+#endif
+              clock_skew_detected = 1;
+            }
+        }
+    }
+
+  /* Store the mtime into all the entries for this file for which it is safe
+     to do so: avoid propagating timestamps to double-colon rules that haven't
+     been examined so they're run or not based on the pre-update timestamp.  */
+  if (file->double_colon)
+    file = file->double_colon;
+
+  propagate_timestamp = file->updated;
+  do
+    {
+      /* If this file is not implicit but it is intermediate then it was
+         made so by the .INTERMEDIATE target.  If this file has never
+         been built by us but was found now, it existed before make
+         started.  So, turn off the intermediate bit so make doesn't
+         delete it, since it didn't create it.  */
+      if (mtime != NONEXISTENT_MTIME && file->command_state == cs_not_started
+          && !file->tried_implicit && file->intermediate)
+        file->intermediate = 0;
+
+      if (file->updated == propagate_timestamp)
+        file->last_mtime = mtime;
+      file = file->prev;
+    }
+  while (file != 0);
+
+  return mtime;
+}
+
+
+/* Return the mtime of the file or archive-member reference NAME.  */
+
+/* First, we check with stat().  If the file does not exist, then we return
+   NONEXISTENT_MTIME.  If it does, and the symlink check flag is set, then
+   examine each indirection of the symlink and find the newest mtime.
+   This causes one duplicate stat() when -L is being used, but the code is
+   much cleaner.  */
+
+static FILE_TIMESTAMP
+name_mtime (const char *name)
+{
+  FILE_TIMESTAMP mtime;
+  struct stat st;
+  int e;
+
+#if defined(KMK) && defined(KBUILD_OS_WINDOWS)
+  extern int stat_only_mtime(const char *pszPath, struct stat *pStat);
+  e = stat_only_mtime (name, &st);
+#else
+  EINTRLOOP (e, stat (name, &st));
+#endif
+  if (e == 0)
+    mtime = FILE_TIMESTAMP_STAT_MODTIME (name, st);
+  else if (errno == ENOENT || errno == ENOTDIR)
+    mtime = NONEXISTENT_MTIME;
+  else
+    {
+      perror_with_name ("stat: ", name);
+      return NONEXISTENT_MTIME;
+    }
+
+  /* If we get here we either found it, or it doesn't exist.
+     If it doesn't exist see if we can use a symlink mtime instead.  */
+
+#ifdef MAKE_SYMLINKS
+#ifndef S_ISLNK
+# define S_ISLNK(_m)     (((_m)&S_IFMT)==S_IFLNK)
+#endif
+  if (check_symlink_flag)
+    {
+      PATH_VAR (lpath);
+
+      /* Check each symbolic link segment (if any).  Find the latest mtime
+         amongst all of them (and the target file of course).
+         Note that we have already successfully dereferenced all the links
+         above.  So, if we run into any error trying to lstat(), or
+         readlink(), or whatever, something bizarre-o happened.  Just give up
+         and use whatever mtime we've already computed at that point.  */
+      strcpy (lpath, name);
+      while (1)
+        {
+          FILE_TIMESTAMP ltime;
+          PATH_VAR (lbuf);
+          long llen;
+          char *p;
+
+          EINTRLOOP (e, lstat (lpath, &st));
+          if (e)
+            {
+              /* Just take what we have so far.  */
+              if (errno != ENOENT && errno != ENOTDIR)
+                perror_with_name ("lstat: ", lpath);
+              break;
+            }
+
+          /* If this is not a symlink, we're done (we started with the real
+             file's mtime so we don't need to test it again).  */
+          if (!S_ISLNK (st.st_mode))
+            break;
+
+          /* If this mtime is newer than what we had, keep the new one.  */
+          ltime = FILE_TIMESTAMP_STAT_MODTIME (lpath, st);
+          if (ltime > mtime)
+            mtime = ltime;
+
+          /* Set up to check the file pointed to by this link.  */
+          EINTRLOOP (llen, readlink (lpath, lbuf, GET_PATH_MAX));
+          if (llen < 0)
+            {
+              /* Eh?  Just take what we have.  */
+              perror_with_name ("readlink: ", lpath);
+              break;
+            }
+          lbuf[llen] = '\0';
+
+          /* If the target is fully-qualified or the source is just a
+             filename, then the new path is the target.  Otherwise it's the
+             source directory plus the target.  */
+          if (lbuf[0] == '/' || (p = strrchr (lpath, '/')) == NULL)
+            strcpy (lpath, lbuf);
+          else if ((p - lpath) + llen + 2 > GET_PATH_MAX)
+            /* Eh?  Path too long!  Again, just go with what we have.  */
+            break;
+          else
+            /* Create the next step in the symlink chain.  */
+            strcpy (p+1, lbuf);
+        }
+    }
+#endif
+
+  return mtime;
+}
+
+
+/* Search for a library file specified as -lLIBNAME, searching for a
+   suitable library file in the system library directories and the VPATH
+   directories.  */
+
+static const char *
+library_search (const char *lib, FILE_TIMESTAMP *mtime_ptr)
+{
+  static const char *dirs[] =
+    {
+#ifdef KMK
+      ".",
+#else /* !KMK */
+#ifndef _AMIGA
+      "/lib",
+      "/usr/lib",
+#endif
+#if defined(WINDOWS32) && !defined(LIBDIR)
+/*
+ * This is completely up to the user at product install time. Just define
+ * a placeholder.
+ */
+#define LIBDIR "."
+#endif
+# ifdef LIBDIR      /* bird */
+      LIBDIR,                   /* Defined by configuration.  */
+# else              /* bird */
+      ".",          /* bird */
+# endif             /* bird */
+#endif /* !KMK */
+      0
+    };
+
+  const char *file = 0;
+  char *libpatterns;
+  FILE_TIMESTAMP mtime;
+
+  /* Loop variables for the libpatterns value.  */
+  char *p;
+  const char *p2;
+  unsigned int len;
+  unsigned int liblen;
+
+  /* Information about the earliest (in the vpath sequence) match.  */
+  unsigned int best_vpath = 0, best_path = 0;
+
+  const char **dp;
+
+  libpatterns = xstrdup (variable_expand ("$(.LIBPATTERNS)"));
+
+  /* Skip the '-l'.  */
+  lib += 2;
+  liblen = strlen (lib);
+
+  /* Loop through all the patterns in .LIBPATTERNS, and search on each one.
+     To implement the linker-compatible behavior we have to search through
+     all entries in .LIBPATTERNS and choose the "earliest" one.  */
+  p2 = libpatterns;
+  while ((p = find_next_token (&p2, &len)) != 0)
+    {
+      static char *buf = NULL;
+      static unsigned int buflen = 0;
+      static int libdir_maxlen = -1;
+      static unsigned int std_dirs = 0;
+      char *libbuf = variable_expand ("");
+      const size_t libbuf_offset = libbuf - variable_buffer; /* bird */
+
+      /* Expand the pattern using LIB as a replacement.  */
+      {
+        char c = p[len];
+        char *p3, *p4;
+
+        p[len] = '\0';
+        p3 = find_percent (p);
+        if (!p3)
+          {
+            /* Give a warning if there is no pattern.  */
+            OS (error, NILF,
+                _(".LIBPATTERNS element '%s' is not a pattern"), p);
+            p[len] = c;
+            continue;
+          }
+        p4 = variable_buffer_output (libbuf, p, p3-p);
+        p4 = variable_buffer_output (p4, lib, liblen);
+        p4 = variable_buffer_output (p4, p3+1, len - (p3-p));
+        p[len] = c;
+	libbuf = variable_buffer + libbuf_offset; /* bird - variable_buffer may have been reallocated. UPSTREAM */
+      }
+
+      /* Look first for 'libNAME.a' in the current directory.  */
+      mtime = name_mtime (libbuf);
+      if (mtime != NONEXISTENT_MTIME)
+        {
+          if (mtime_ptr != 0)
+            *mtime_ptr = mtime;
+          file = strcache_add (libbuf);
+          /* This by definition will have the best index, so stop now.  */
+          break;
+        }
+
+      /* Now try VPATH search on that.  */
+
+      {
+        unsigned int vpath_index, path_index;
+        const char* f = vpath_search (libbuf, mtime_ptr ? &mtime : NULL,
+                                      &vpath_index, &path_index);
+        if (f)
+          {
+            /* If we have a better match, record it.  */
+            if (file == 0 ||
+                vpath_index < best_vpath ||
+                (vpath_index == best_vpath && path_index < best_path))
+              {
+                file = f;
+                best_vpath = vpath_index;
+                best_path = path_index;
+
+                if (mtime_ptr != 0)
+                  *mtime_ptr = mtime;
+              }
+          }
+      }
+
+      /* Now try the standard set of directories.  */
+
+      if (!buflen)
+        {
+          for (dp = dirs; *dp != 0; ++dp)
+            {
+              int l = strlen (*dp);
+              if (l > libdir_maxlen)
+                libdir_maxlen = l;
+              std_dirs++;
+            }
+          buflen = strlen (libbuf);
+          buf = xmalloc (libdir_maxlen + buflen + 2);
+        }
+      else if (buflen < strlen (libbuf))
+        {
+          buflen = strlen (libbuf);
+          buf = xrealloc (buf, libdir_maxlen + buflen + 2);
+        }
+
+      {
+        /* Use the last std_dirs index for standard directories. This
+           was it will always be greater than the VPATH index.  */
+        unsigned int vpath_index = ~((unsigned int)0) - std_dirs;
+
+        for (dp = dirs; *dp != 0; ++dp)
+          {
+            sprintf (buf, "%s/%s", *dp, libbuf);
+            mtime = name_mtime (buf);
+            if (mtime != NONEXISTENT_MTIME)
+              {
+                if (file == 0 || vpath_index < best_vpath)
+                  {
+                    file = strcache_add (buf);
+                    best_vpath = vpath_index;
+
+                    if (mtime_ptr != 0)
+                      *mtime_ptr = mtime;
+                  }
+              }
+
+            vpath_index++;
+          }
+      }
+
+    }
+
+  free (libpatterns);
+  return file;
+}
diff --git a/src/kmk/remote-cstms.c b/src/kmk/remote-cstms.c
new file mode 100644
index 0000000..7c36b9d
--- /dev/null
+++ b/src/kmk/remote-cstms.c
@@ -0,0 +1,300 @@
+/* GNU Make remote job exportation interface to the Customs daemon.
+   THIS CODE IS NOT SUPPORTED BY THE GNU PROJECT.
+   Please do not send bug reports or questions about it to
+   the Make maintainers.
+
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "commands.h"
+#include "job.h"
+#include "debug.h"
+
+#include <sys/time.h>
+#include <netdb.h>
+
+#include "customs.h"
+
+char *remote_description = "Customs";
+
+/* File name of the Customs 'export' client command.
+   A full path name can be used to avoid some path-searching overhead.  */
+#define EXPORT_COMMAND  "/usr/local/bin/export"
+
+/* ExportPermit gotten by start_remote_job_p, and used by start_remote_job.  */
+static ExportPermit permit;
+
+/* Normalized path name of the current directory.  */
+static char *normalized_cwd;
+
+/* Call once at startup even if no commands are run.  */
+
+void
+remote_setup (void)
+{
+}
+
+/* Called before exit.  */
+
+void
+remote_cleanup (void)
+{
+}
+
+/* Return nonzero if the next job should be done remotely.  */
+
+int
+start_remote_job_p (int first_p)
+{
+  static int inited = 0;
+  int status;
+  int njobs;
+
+  if (!inited)
+    {
+      /* Allow the user to turn off job exportation (useful while he is
+         debugging Customs, for example).  */
+      if (getenv ("GNU_MAKE_NO_CUSTOMS") != 0)
+        {
+          inited = -1;
+          return 0;
+        }
+
+      /* For secure Customs, make is installed setuid root and
+         Customs requires a privileged source port be used.  */
+      make_access ();
+
+      if (ISDB (DB_JOBS))
+        Rpc_Debug (1);
+
+      /* Ping the daemon once to see if it is there.  */
+      inited = Customs_Ping () == RPC_SUCCESS ? 1 : -1;
+
+      /* Return to normal user access.  */
+      user_access ();
+
+      if (starting_directory == 0)
+        /* main couldn't figure it out.  */
+        inited = -1;
+      else
+        {
+          /* Normalize the current directory path name to something
+             that should work on all machines exported to.  */
+
+          normalized_cwd = xmalloc (GET_PATH_MAX);
+          strcpy (normalized_cwd, starting_directory);
+          if (Customs_NormPath (normalized_cwd, GET_PATH_MAX) < 0)
+            /* Path normalization failure means using Customs
+               won't work, but it's not really an error.  */
+            inited = -1;
+        }
+    }
+
+  if (inited < 0)
+    return 0;
+
+  njobs = job_slots_used;
+  if (!first_p)
+    njobs -= 1;         /* correction for being called from reap_children() */
+
+  /* the first job should run locally, or, if the -l flag is given, we use
+     that as clue as to how many local jobs should be scheduled locally */
+  if (max_load_average < 0 && njobs == 0 || njobs < max_load_average)
+     return 0;
+
+  status = Customs_Host (EXPORT_SAME, &permit);
+  if (status != RPC_SUCCESS)
+    {
+      DB (DB_JOBS, (_("Customs won't export: %s\n"),
+                    Rpc_ErrorMessage (status)));
+      return 0;
+    }
+
+  return !CUSTOMS_FAIL (&permit.addr);
+}
+
+/* Start a remote job running the command in ARGV, with environment from
+   ENVP.  It gets standard input from STDIN_FD.  On failure, return
+   nonzero.  On success, return zero, and set *USED_STDIN to nonzero if it
+   will actually use STDIN_FD, zero if not, set *ID_PTR to a unique
+   identification, and set *IS_REMOTE to nonzero if the job is remote, zero
+   if it is local (meaning *ID_PTR is a process ID).  */
+
+int
+start_remote_job (char **argv, char **envp, int stdin_fd,
+                  int *is_remote, int *id_ptr, int *used_stdin)
+{
+  char waybill[MAX_DATA_SIZE], msg[128];
+  struct hostent *host;
+  struct timeval timeout;
+  struct sockaddr_in sin;
+  int len;
+  int retsock, retport, sock;
+  Rpc_Stat status;
+  int pid;
+
+  /* Create the return socket.  */
+  retsock = Rpc_UdpCreate (True, 0);
+  if (retsock < 0)
+    {
+      O (error, NILF, "exporting: Couldn't create return socket.");
+      return 1;
+    }
+
+  /* Get the return socket's port number.  */
+  len = sizeof (sin);
+  if (getsockname (retsock, (struct sockaddr *) &sin, &len) < 0)
+    {
+      (void) close (retsock);
+      perror_with_name ("exporting: ", "getsockname");
+      return 1;
+    }
+  retport = sin.sin_port;
+
+  /* Create the TCP socket for talking to the remote child.  */
+  sock = Rpc_TcpCreate (False, 0);
+
+  /* Create a WayBill to give to the server.  */
+  len = Customs_MakeWayBill (&permit, normalized_cwd, argv[0], argv,
+                             envp, retport, waybill);
+
+  /* Modify the waybill as if the remote child had done 'child_access ()'.  */
+  {
+    WayBill *wb = (WayBill *) waybill;
+    wb->ruid = wb->euid;
+    wb->rgid = wb->egid;
+  }
+
+  /* Send the request to the server, timing out in 20 seconds.  */
+  timeout.tv_usec = 0;
+  timeout.tv_sec = 20;
+  sin.sin_family = AF_INET;
+  sin.sin_port = htons (Customs_Port ());
+  sin.sin_addr = permit.addr;
+  status = Rpc_Call (sock, &sin, (Rpc_Proc) CUSTOMS_IMPORT,
+                     len, (Rpc_Opaque) waybill,
+                     sizeof (msg), (Rpc_Opaque) msg,
+                     1, &timeout);
+
+  host = gethostbyaddr ((char *)&permit.addr, sizeof(permit.addr), AF_INET);
+
+  {
+    const char *hnm = host ? host->h_name : inet_ntoa (permit.addr);
+    size_t hlen = strlen (hnm);
+
+    if (status != RPC_SUCCESS)
+      {
+        const char *err = Rpc_ErrorMessage (status);
+        (void) close (retsock);
+        (void) close (sock);
+        error (NILF, hlen + strlen (err),
+               "exporting to %s: %s", hnm, err);
+        return 1;
+      }
+    else if (msg[0] != 'O' || msg[1] != 'k' || msg[2] != '\0')
+      {
+        (void) close (retsock);
+        (void) close (sock);
+        error (NILF, hlen + strlen (msg), "exporting to %s: %s", hnm, msg);
+        return 1;
+      }
+    else
+      {
+        error (NILF, hlen + INTSTR_LENGTH,
+               "*** exported to %s (id %u)", hnm, permit.id);
+      }
+
+    fflush (stdout);
+    fflush (stderr);
+  }
+
+  pid = vfork ();
+  if (pid < 0)
+    {
+      /* The fork failed!  */
+      perror_with_name ("fork", "");
+      return 1;
+    }
+  else if (pid == 0)
+    {
+      /* Child side.  Run 'export' to handle the connection.  */
+      static char sock_buf[20], retsock_buf[20], id_buf[20];
+      static char *new_argv[6] =
+        { EXPORT_COMMAND, "-id", sock_buf, retsock_buf, id_buf, 0 };
+
+      /* Set up the arguments.  */
+      (void) sprintf (sock_buf, "%d", sock);
+      (void) sprintf (retsock_buf, "%d", retsock);
+      (void) sprintf (id_buf, "%x", permit.id);
+
+      /* Get the right stdin.  */
+      if (stdin_fd != 0)
+        (void) dup2 (stdin_fd, 0);
+
+      /* Unblock signals in the child.  */
+      unblock_sigs ();
+
+      /* Run the command.  */
+      exec_command (new_argv, envp);
+    }
+
+  /* Parent side.  Return the 'export' process's ID.  */
+  (void) close (retsock);
+  (void) close (sock);
+  *is_remote = 0;
+  *id_ptr = pid;
+  *used_stdin = 1;
+  return 0;
+}
+
+/* Get the status of a dead remote child.  Block waiting for one to die
+   if BLOCK is nonzero.  Set *EXIT_CODE_PTR to the exit status, *SIGNAL_PTR
+   to the termination signal or zero if it exited normally, and *COREDUMP_PTR
+   nonzero if it dumped core.  Return the ID of the child that died,
+   0 if we would have to block and !BLOCK, or < 0 if there were none.  */
+
+int
+remote_status (int *exit_code_ptr, int *signal_ptr, int *coredump_ptr,
+               int block)
+{
+  return -1;
+}
+
+/* Block asynchronous notification of remote child death.
+   If this notification is done by raising the child termination
+   signal, do not block that signal.  */
+void
+block_remote_children (void)
+{
+  return;
+}
+
+/* Restore asynchronous notification of remote child death.
+   If this is done by raising the child termination signal,
+   do not unblock that signal.  */
+void
+unblock_remote_children (void)
+{
+  return;
+}
+
+/* Send signal SIG to child ID.  Return 0 if successful, -1 if not.  */
+int
+remote_kill (int id, int sig)
+{
+  return -1;
+}
diff --git a/src/kmk/remote-stub.c b/src/kmk/remote-stub.c
new file mode 100644
index 0000000..8e31a20
--- /dev/null
+++ b/src/kmk/remote-stub.c
@@ -0,0 +1,99 @@
+/* Template for the remote job exportation interface to GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "job.h"
+#include "commands.h"
+
+
+char *remote_description = 0;
+
+/* Call once at startup even if no commands are run.  */
+
+void
+remote_setup (void)
+{
+}
+
+/* Called before exit.  */
+
+void
+remote_cleanup (void)
+{
+}
+
+/* Return nonzero if the next job should be done remotely.  */
+
+int
+start_remote_job_p (int first_p UNUSED)
+{
+  return 0;
+}
+
+/* Start a remote job running the command in ARGV,
+   with environment from ENVP.  It gets standard input from STDIN_FD.  On
+   failure, return nonzero.  On success, return zero, and set *USED_STDIN
+   to nonzero if it will actually use STDIN_FD, zero if not, set *ID_PTR to
+   a unique identification, and set *IS_REMOTE to zero if the job is local,
+   nonzero if it is remote (meaning *ID_PTR is a process ID).  */
+
+int
+start_remote_job (char **argv UNUSED, char **envp UNUSED, int stdin_fd UNUSED,
+                  int *is_remote UNUSED, int *id_ptr UNUSED,
+                  int *used_stdin UNUSED)
+{
+  return -1;
+}
+
+/* Get the status of a dead remote child.  Block waiting for one to die
+   if BLOCK is nonzero.  Set *EXIT_CODE_PTR to the exit status, *SIGNAL_PTR
+   to the termination signal or zero if it exited normally, and *COREDUMP_PTR
+   nonzero if it dumped core.  Return the ID of the child that died,
+   0 if we would have to block and !BLOCK, or < 0 if there were none.  */
+
+int
+remote_status (int *exit_code_ptr UNUSED, int *signal_ptr UNUSED,
+               int *coredump_ptr UNUSED, int block UNUSED)
+{
+  errno = ECHILD;
+  return -1;
+}
+
+/* Block asynchronous notification of remote child death.
+   If this notification is done by raising the child termination
+   signal, do not block that signal.  */
+void
+block_remote_children (void)
+{
+  return;
+}
+
+/* Restore asynchronous notification of remote child death.
+   If this is done by raising the child termination signal,
+   do not unblock that signal.  */
+void
+unblock_remote_children (void)
+{
+  return;
+}
+
+/* Send signal SIG to child ID.  Return 0 if successful, -1 if not.  */
+int
+remote_kill (int id UNUSED, int sig UNUSED)
+{
+  return -1;
+}
diff --git a/src/kmk/rule.c b/src/kmk/rule.c
new file mode 100644
index 0000000..5e4f5d9
--- /dev/null
+++ b/src/kmk/rule.c
@@ -0,0 +1,546 @@
+/* Pattern and suffix rule internals for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <assert.h>
+
+#include "filedef.h"
+#include "dep.h"
+#include "job.h"
+#include "commands.h"
+#include "variable.h"
+#include "rule.h"
+
+static void freerule (struct rule *rule, struct rule *lastrule);
+
+/* Chain of all pattern rules.  */
+
+struct rule *pattern_rules;
+
+/* Pointer to last rule in the chain, so we can add onto the end.  */
+
+struct rule *last_pattern_rule;
+
+/* Number of rules in the chain.  */
+
+unsigned int num_pattern_rules;
+
+/* Maximum number of target patterns of any pattern rule.  */
+
+unsigned int max_pattern_targets;
+
+/* Maximum number of dependencies of any pattern rule.  */
+
+unsigned int max_pattern_deps;
+
+/* Maximum length of the name of a dependencies of any pattern rule.  */
+
+unsigned int max_pattern_dep_length;
+
+/* Pointer to structure for the file .SUFFIXES
+   whose dependencies are the suffixes to be searched.  */
+
+struct file *suffix_file;
+
+/* Maximum length of a suffix.  */
+
+unsigned int maxsuffix;
+
+/* Compute the maximum dependency length and maximum number of
+   dependencies of all implicit rules.  Also sets the subdir
+   flag for a rule when appropriate, possibly removing the rule
+   completely when appropriate.  */
+
+void
+count_implicit_rule_limits (void)
+{
+  char *name;
+  int namelen;
+  struct rule *rule;
+
+  num_pattern_rules = max_pattern_targets = max_pattern_deps = 0;
+  max_pattern_dep_length = 0;
+
+  name = 0;
+  namelen = 0;
+  rule = pattern_rules;
+  while (rule != 0)
+    {
+      unsigned int ndeps = 0;
+      struct dep *dep;
+      struct rule *next = rule->next;
+
+      ++num_pattern_rules;
+
+      if (rule->num > max_pattern_targets)
+        max_pattern_targets = rule->num;
+
+      for (dep = rule->deps; dep != 0; dep = dep->next)
+        {
+          const char *dname = dep_name (dep);
+          unsigned int len = strlen (dname);
+
+#ifdef VMS
+          const char *p = strrchr (dname, ']');
+          const char *p2;
+          if (p == 0)
+            p = strrchr (dname, ':');
+          p2 = p != 0 ? strchr (dname, '%') : 0;
+#else
+          const char *p = strrchr (dname, '/');
+          const char *p2 = p != 0 ? strchr (dname, '%') : 0;
+#endif
+          ndeps++;
+
+          if (len > max_pattern_dep_length)
+            max_pattern_dep_length = len;
+
+          if (p != 0 && p2 > p)
+            {
+              /* There is a slash before the % in the dep name.
+                 Extract the directory name.  */
+              if (p == dname)
+                ++p;
+              if (p - dname > namelen)
+                {
+                  namelen = p - dname;
+                  name = xrealloc (name, namelen + 1);
+                }
+              memcpy (name, dname, p - dname);
+              name[p - dname] = '\0';
+
+              /* In the deps of an implicit rule the 'changed' flag
+                 actually indicates that the dependency is in a
+                 nonexistent subdirectory.  */
+
+              dep->changed = !dir_file_exists_p (name, "");
+            }
+          else
+            /* This dependency does not reside in a subdirectory.  */
+            dep->changed = 0;
+        }
+
+      if (ndeps > max_pattern_deps)
+        max_pattern_deps = ndeps;
+
+      rule = next;
+    }
+
+  free (name);
+}
+
+/* Create a pattern rule from a suffix rule.
+   TARGET is the target suffix; SOURCE is the source suffix.
+   CMDS are the commands.
+   If TARGET is nil, it means the target pattern should be '(%.o)'.
+   If SOURCE is nil, it means there should be no deps.  */
+
+static void
+convert_suffix_rule (const char *target, const char *source,
+                     struct commands *cmds)
+{
+  const char **names, **percents;
+  struct dep *deps;
+
+  names = xmalloc (sizeof (const char *));
+  percents = xmalloc (sizeof (const char *));
+
+  if (target == 0)
+    {
+      /* Special case: TARGET being nil means we are defining a '.X.a' suffix
+         rule; the target pattern is always '(%.o)'.  */
+#ifdef VMS
+      *names = strcache_add_len ("(%.obj)", 7);
+#else
+      *names = strcache_add_len ("(%.o)", 5);
+#endif
+      *percents = *names + 1;
+    }
+  else
+    {
+      /* Construct the target name.  */
+      unsigned int len = strlen (target);
+      char *p = alloca (1 + len + 1);
+      p[0] = '%';
+      memcpy (p + 1, target, len + 1);
+      *names = strcache_add_len (p, len + 1);
+      *percents = *names;
+    }
+
+  if (source == 0)
+    deps = 0;
+  else
+    {
+      /* Construct the dependency name.  */
+      unsigned int len = strlen (source);
+      char *p = alloca (1 + len + 1);
+      p[0] = '%';
+      memcpy (p + 1, source, len + 1);
+      deps = alloc_dep ();
+      deps->name = strcache_add_len (p, len + 1);
+    }
+
+  create_pattern_rule (names, percents, 1, 0, deps, cmds, 0);
+}
+
+/* Convert old-style suffix rules to pattern rules.
+   All rules for the suffixes on the .SUFFIXES list are converted and added to
+   the chain of pattern rules.  */
+
+void
+convert_to_pattern (void)
+{
+  struct dep *d, *d2;
+  char *rulename;
+
+  /* We will compute every potential suffix rule (.x.y) from the list of
+     suffixes in the .SUFFIXES target's dependencies and see if it exists.
+     First find the longest of the suffixes.  */
+
+  maxsuffix = 0;
+  for (d = suffix_file->deps; d != 0; d = d->next)
+    {
+      unsigned int l = strlen (dep_name (d));
+      if (l > maxsuffix)
+        maxsuffix = l;
+    }
+
+  /* Space to construct the suffix rule target name.  */
+  rulename = alloca ((maxsuffix * 2) + 1);
+
+  for (d = suffix_file->deps; d != 0; d = d->next)
+    {
+      unsigned int slen;
+
+      /* Make a rule that is just the suffix, with no deps or commands.
+         This rule exists solely to disqualify match-anything rules.  */
+      convert_suffix_rule (dep_name (d), 0, 0);
+
+      if (d->file->cmds != 0)
+        /* Record a pattern for this suffix's null-suffix rule.  */
+        convert_suffix_rule ("", dep_name (d), d->file->cmds);
+
+      /* Add every other suffix to this one and see if it exists as a
+         two-suffix rule.  */
+      slen = strlen (dep_name (d));
+      memcpy (rulename, dep_name (d), slen);
+
+      for (d2 = suffix_file->deps; d2 != 0; d2 = d2->next)
+        {
+          struct file *f;
+          unsigned int s2len;
+
+          s2len = strlen (dep_name (d2));
+
+          /* Can't build something from itself.  */
+          if (slen == s2len && streq (dep_name (d), dep_name (d2)))
+            continue;
+
+          memcpy (rulename + slen, dep_name (d2), s2len + 1);
+          f = lookup_file (rulename);
+          if (f == 0 || f->cmds == 0)
+            continue;
+
+          if (s2len == 2 && rulename[slen] == '.' && rulename[slen + 1] == 'a')
+            /* A suffix rule '.X.a:' generates the pattern rule '(%.o): %.X'.
+               It also generates a normal '%.a: %.X' rule below.  */
+            convert_suffix_rule (NULL, /* Indicates '(%.o)'.  */
+                                 dep_name (d),
+                                 f->cmds);
+
+          /* The suffix rule '.X.Y:' is converted
+             to the pattern rule '%.Y: %.X'.  */
+          convert_suffix_rule (dep_name (d2), dep_name (d), f->cmds);
+        }
+    }
+}
+
+
+/* Install the pattern rule RULE (whose fields have been filled in) at the end
+   of the list (so that any rules previously defined will take precedence).
+   If this rule duplicates a previous one (identical target and dependencies),
+   the old one is replaced if OVERRIDE is nonzero, otherwise this new one is
+   thrown out.  When an old rule is replaced, the new one is put at the end of
+   the list.  Return nonzero if RULE is used; zero if not.  */
+
+static int
+new_pattern_rule (struct rule *rule, int override)
+{
+  struct rule *r, *lastrule;
+  unsigned int i, j;
+
+  rule->in_use = 0;
+  rule->terminal = 0;
+
+  rule->next = 0;
+
+  /* Search for an identical rule.  */
+  lastrule = 0;
+  for (r = pattern_rules; r != 0; lastrule = r, r = r->next)
+    for (i = 0; i < rule->num; ++i)
+      {
+        for (j = 0; j < r->num; ++j)
+          if (!streq (rule->targets[i], r->targets[j]))
+            break;
+        /* If all the targets matched...  */
+        if (j == r->num)
+          {
+            struct dep *d, *d2;
+            for (d = rule->deps, d2 = r->deps;
+                 d != 0 && d2 != 0; d = d->next, d2 = d2->next)
+              if (!streq (dep_name (d), dep_name (d2)))
+                break;
+            if (d == 0 && d2 == 0)
+              {
+                /* All the dependencies matched.  */
+                if (override)
+                  {
+                    /* Remove the old rule.  */
+                    freerule (r, lastrule);
+                    /* Install the new one.  */
+                    if (pattern_rules == 0)
+                      pattern_rules = rule;
+                    else
+                      last_pattern_rule->next = rule;
+                    last_pattern_rule = rule;
+
+                    /* We got one.  Stop looking.  */
+                    goto matched;
+                  }
+                else
+                  {
+                    /* The old rule stays intact.  Destroy the new one.  */
+                    freerule (rule, (struct rule *) 0);
+                    return 0;
+                  }
+              }
+          }
+      }
+
+ matched:;
+
+  if (r == 0)
+    {
+      /* There was no rule to replace.  */
+      if (pattern_rules == 0)
+        pattern_rules = rule;
+      else
+        last_pattern_rule->next = rule;
+      last_pattern_rule = rule;
+    }
+
+  return 1;
+}
+
+
+/* Install an implicit pattern rule based on the three text strings
+   in the structure P points to.  These strings come from one of
+   the arrays of default implicit pattern rules.
+   TERMINAL specifies what the 'terminal' field of the rule should be.  */
+
+void
+install_pattern_rule (struct pspec *p, int terminal)
+{
+  struct rule *r;
+  const char *ptr;
+
+  r = xmalloc (sizeof (struct rule));
+
+  r->num = 1;
+  r->targets = xmalloc (sizeof (const char *));
+  r->suffixes = xmalloc (sizeof (const char *));
+  r->lens = xmalloc (sizeof (unsigned int));
+
+  r->lens[0] = strlen (p->target);
+  r->targets[0] = p->target;
+  r->suffixes[0] = find_percent_cached (&r->targets[0]);
+  assert (r->suffixes[0] != NULL);
+  ++r->suffixes[0];
+
+  ptr = p->dep;
+  r->deps = PARSE_SIMPLE_SEQ ((char **)&ptr, struct dep);
+
+  if (new_pattern_rule (r, 0))
+    {
+      r->terminal = terminal;
+#ifndef CONFIG_WITH_ALLOC_CACHES
+      r->cmds = xmalloc (sizeof (struct commands));
+#else
+      r->cmds = alloccache_alloc (&commands_cache);
+#endif
+      r->cmds->fileinfo.filenm = 0;
+      r->cmds->fileinfo.lineno = 0;
+      r->cmds->fileinfo.offset = 0;
+      /* These will all be string literals, but we malloc space for them
+         anyway because somebody might want to free them later.  */
+      r->cmds->commands = xstrdup (p->commands);
+      r->cmds->command_lines = 0;
+      r->cmds->recipe_prefix = RECIPEPREFIX_DEFAULT;
+
+#ifdef CONFIG_WITH_MEMORY_OPTIMIZATIONS
+      r->cmds->refs = 1000;
+#endif
+    }
+}
+
+
+/* Free all the storage used in RULE and take it out of the
+   pattern_rules chain.  LASTRULE is the rule whose next pointer
+   points to RULE.  */
+
+static void
+freerule (struct rule *rule, struct rule *lastrule)
+{
+  struct rule *next = rule->next;
+
+  free_dep_chain (rule->deps);
+
+  /* MSVC erroneously warns without a cast here.  */
+  free ((void *)rule->targets);
+  free ((void *)rule->suffixes);
+  free (rule->lens);
+
+  /* We can't free the storage for the commands because there
+     are ways that they could be in more than one place:
+       * If the commands came from a suffix rule, they could also be in
+       the 'struct file's for other suffix rules or plain targets given
+       on the same makefile line.
+       * If two suffixes that together make a two-suffix rule were each
+       given twice in the .SUFFIXES list, and in the proper order, two
+       identical pattern rules would be created and the second one would
+       be discarded here, but both would contain the same 'struct commands'
+       pointer from the 'struct file' for the suffix rule.  */
+
+  free (rule);
+
+  if (pattern_rules == rule)
+    if (lastrule != 0)
+      abort ();
+    else
+      pattern_rules = next;
+  else if (lastrule != 0)
+    lastrule->next = next;
+  if (last_pattern_rule == rule)
+    last_pattern_rule = lastrule;
+}
+
+/* Create a new pattern rule with the targets in the nil-terminated array
+   TARGETS.  TARGET_PERCENTS is an array of pointers to the % in each element
+   of TARGETS.  N is the number of items in the array (not counting the nil
+   element).  The new rule has dependencies DEPS and commands from COMMANDS.
+   It is a terminal rule if TERMINAL is nonzero.  This rule overrides
+   identical rules with different commands if OVERRIDE is nonzero.
+
+   The storage for TARGETS and its elements and TARGET_PERCENTS is used and
+   must not be freed until the rule is destroyed.  */
+
+void
+create_pattern_rule (const char **targets, const char **target_percents,
+                     unsigned int n, int terminal, struct dep *deps,
+                     struct commands *commands, int override)
+{
+  unsigned int i;
+  struct rule *r = xmalloc (sizeof (struct rule));
+
+  r->num = n;
+  r->cmds = commands;
+  r->deps = deps;
+  r->targets = targets;
+  r->suffixes = target_percents;
+  r->lens = xmalloc (n * sizeof (unsigned int));
+
+  for (i = 0; i < n; ++i)
+    {
+      r->lens[i] = strlen (targets[i]);
+      assert (r->suffixes[i] != NULL);
+      ++r->suffixes[i];
+    }
+
+  if (new_pattern_rule (r, override))
+    r->terminal = terminal;
+#ifdef CONFIG_WITH_MEMORY_OPTIMIZATIONS
+  if (commands != NULL)
+    commands->refs = 1000;
+#endif
+}
+
+/* Print the data base of rules.  */
+
+static void                     /* Useful to call from gdb.  */
+print_rule (struct rule *r)
+{
+  unsigned int i;
+
+  for (i = 0; i < r->num; ++i)
+    {
+      fputs (r->targets[i], stdout);
+      putchar ((i + 1 == r->num) ? ':' : ' ');
+    }
+  if (r->terminal)
+    putchar (':');
+
+  print_prereqs (r->deps);
+
+  if (r->cmds != 0)
+    print_commands (r->cmds);
+}
+
+void
+print_rule_data_base (void)
+{
+  unsigned int rules, terminal;
+  struct rule *r;
+
+  puts (_("\n# Implicit Rules"));
+
+  rules = terminal = 0;
+  for (r = pattern_rules; r != 0; r = r->next)
+    {
+      ++rules;
+
+      putchar ('\n');
+      print_rule (r);
+
+      if (r->terminal)
+        ++terminal;
+    }
+
+  if (rules == 0)
+    puts (_("\n# No implicit rules."));
+  else
+    {
+      printf (_("\n# %u implicit rules, %u"), rules, terminal);
+#ifndef NO_FLOAT
+      printf (" (%.1f%%)", (double) terminal / (double) rules * 100.0);
+#else
+      {
+        int f = (terminal * 1000 + 5) / rules;
+        printf (" (%d.%d%%)", f/10, f%10);
+      }
+#endif
+      puts (_(" terminal."));
+    }
+
+  if (num_pattern_rules != rules)
+    {
+      /* This can happen if a fatal error was detected while reading the
+         makefiles and thus count_implicit_rule_limits wasn't called yet.  */
+      if (num_pattern_rules != 0)
+        ONN (fatal, NILF, _("BUG: num_pattern_rules is wrong!  %u != %u"),
+             num_pattern_rules, rules);
+    }
+}
diff --git a/src/kmk/rule.h b/src/kmk/rule.h
new file mode 100644
index 0000000..9156b8e
--- /dev/null
+++ b/src/kmk/rule.h
@@ -0,0 +1,58 @@
+/* Definitions for using pattern rules in GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Structure used for pattern (implicit) rules.  */
+
+struct rule
+  {
+    struct rule *next;
+    const char **targets;       /* Targets of the rule.  */
+    unsigned int *lens;         /* Lengths of each target.  */
+    const char **suffixes;      /* Suffixes (after '%') of each target.  */
+    struct dep *deps;           /* Dependencies of the rule.  */
+    struct commands *cmds;      /* Commands to execute.  */
+    unsigned short num;         /* Number of targets.  */
+    char terminal;              /* If terminal (double-colon).  */
+    char in_use;                /* If in use by a parent pattern_search.  */
+  };
+
+/* For calling install_pattern_rule.  */
+struct pspec
+  {
+    const char *target, *dep, *commands;
+  };
+
+
+extern struct rule *pattern_rules;
+extern struct rule *last_pattern_rule;
+extern unsigned int num_pattern_rules;
+
+extern unsigned int max_pattern_deps;
+extern unsigned int max_pattern_targets;
+extern unsigned int max_pattern_dep_length;
+
+extern struct file *suffix_file;
+extern unsigned int maxsuffix;
+
+
+void count_implicit_rule_limits (void);
+void convert_to_pattern (void);
+void install_pattern_rule (struct pspec *p, int terminal);
+void create_pattern_rule (const char **targets, const char **target_percents,
+                          unsigned int num, int terminal, struct dep *deps,
+                          struct commands *commands, int override);
+void print_rule_data_base (void);
diff --git a/src/kmk/signame.c b/src/kmk/signame.c
new file mode 100644
index 0000000..55646e9
--- /dev/null
+++ b/src/kmk/signame.c
@@ -0,0 +1,254 @@
+/* Convert between signal names and numbers.
+Copyright (C) 1990-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+/* If the system provides strsignal, we don't need it. */
+
+#if !HAVE_STRSIGNAL
+
+/* If the system provides sys_siglist, we'll use that.
+   Otherwise create our own.
+ */
+
+#if !HAVE_DECL_SYS_SIGLIST
+
+/* Some systems do not define NSIG in <signal.h>.  */
+#ifndef NSIG
+#ifdef  _NSIG
+#define NSIG    _NSIG
+#else
+#define NSIG    32
+#endif
+#endif
+
+/* There is too much variation in Sys V signal numbers and names, so
+   we must initialize them at runtime.  */
+
+static const char *undoc;
+
+static const char *sys_siglist[NSIG];
+
+/* Table of abbreviations for signals.  Note:  A given number can
+   appear more than once with different abbreviations.  */
+#define SIG_TABLE_SIZE  (NSIG*2)
+
+typedef struct
+  {
+    int number;
+    const char *abbrev;
+  } num_abbrev;
+
+static num_abbrev sig_table[SIG_TABLE_SIZE];
+
+/* Number of elements of sig_table used.  */
+static int sig_table_nelts = 0;
+
+/* Enter signal number NUMBER into the tables with ABBREV and NAME.  */
+
+static void
+init_sig (int number, const char *abbrev, const char *name)
+{
+  /* If this value is ever greater than NSIG it seems like it'd be a bug in
+     the system headers, but... better safe than sorry.  We know, for
+     example, that this isn't always true on VMS.  */
+
+  if (number >= 0 && number < NSIG)
+    sys_siglist[number] = name;
+
+  if (sig_table_nelts < SIG_TABLE_SIZE)
+    {
+      sig_table[sig_table_nelts].number = number;
+      sig_table[sig_table_nelts++].abbrev = abbrev;
+    }
+}
+
+static int
+signame_init (void)
+{
+  int i;
+
+  undoc = xstrdup (_("unknown signal"));
+
+  /* Initialize signal names.  */
+  for (i = 0; i < NSIG; i++)
+    sys_siglist[i] = undoc;
+
+  /* Initialize signal names.  */
+#if defined (SIGHUP)
+  init_sig (SIGHUP, "HUP", _("Hangup"));
+#endif
+#if defined (SIGINT)
+  init_sig (SIGINT, "INT", _("Interrupt"));
+#endif
+#if defined (SIGQUIT)
+  init_sig (SIGQUIT, "QUIT", _("Quit"));
+#endif
+#if defined (SIGILL)
+  init_sig (SIGILL, "ILL", _("Illegal Instruction"));
+#endif
+#if defined (SIGTRAP)
+  init_sig (SIGTRAP, "TRAP", _("Trace/breakpoint trap"));
+#endif
+  /* If SIGIOT == SIGABRT, we want to print it as SIGABRT because
+     SIGABRT is in ANSI and POSIX.1 and SIGIOT isn't.  */
+#if defined (SIGABRT)
+  init_sig (SIGABRT, "ABRT", _("Aborted"));
+#endif
+#if defined (SIGIOT)
+  init_sig (SIGIOT, "IOT", _("IOT trap"));
+#endif
+#if defined (SIGEMT)
+  init_sig (SIGEMT, "EMT", _("EMT trap"));
+#endif
+#if defined (SIGFPE)
+  init_sig (SIGFPE, "FPE", _("Floating point exception"));
+#endif
+#if defined (SIGKILL)
+  init_sig (SIGKILL, "KILL", _("Killed"));
+#endif
+#if defined (SIGBUS)
+  init_sig (SIGBUS, "BUS", _("Bus error"));
+#endif
+#if defined (SIGSEGV)
+  init_sig (SIGSEGV, "SEGV", _("Segmentation fault"));
+#endif
+#if defined (SIGSYS)
+  init_sig (SIGSYS, "SYS", _("Bad system call"));
+#endif
+#if defined (SIGPIPE)
+  init_sig (SIGPIPE, "PIPE", _("Broken pipe"));
+#endif
+#if defined (SIGALRM)
+  init_sig (SIGALRM, "ALRM", _("Alarm clock"));
+#endif
+#if defined (SIGTERM)
+  init_sig (SIGTERM, "TERM", _("Terminated"));
+#endif
+#if defined (SIGUSR1)
+  init_sig (SIGUSR1, "USR1", _("User defined signal 1"));
+#endif
+#if defined (SIGUSR2)
+  init_sig (SIGUSR2, "USR2", _("User defined signal 2"));
+#endif
+  /* If SIGCLD == SIGCHLD, we want to print it as SIGCHLD because that
+     is what is in POSIX.1.  */
+#if defined (SIGCHLD)
+  init_sig (SIGCHLD, "CHLD", _("Child exited"));
+#endif
+#if defined (SIGCLD)
+  init_sig (SIGCLD, "CLD", _("Child exited"));
+#endif
+#if defined (SIGPWR)
+  init_sig (SIGPWR, "PWR", _("Power failure"));
+#endif
+#if defined (SIGTSTP)
+  init_sig (SIGTSTP, "TSTP", _("Stopped"));
+#endif
+#if defined (SIGTTIN)
+  init_sig (SIGTTIN, "TTIN", _("Stopped (tty input)"));
+#endif
+#if defined (SIGTTOU)
+  init_sig (SIGTTOU, "TTOU", _("Stopped (tty output)"));
+#endif
+#if defined (SIGSTOP)
+  init_sig (SIGSTOP, "STOP", _("Stopped (signal)"));
+#endif
+#if defined (SIGXCPU)
+  init_sig (SIGXCPU, "XCPU", _("CPU time limit exceeded"));
+#endif
+#if defined (SIGXFSZ)
+  init_sig (SIGXFSZ, "XFSZ", _("File size limit exceeded"));
+#endif
+#if defined (SIGVTALRM)
+  init_sig (SIGVTALRM, "VTALRM", _("Virtual timer expired"));
+#endif
+#if defined (SIGPROF)
+  init_sig (SIGPROF, "PROF", _("Profiling timer expired"));
+#endif
+#if defined (SIGWINCH)
+  /* "Window size changed" might be more accurate, but even if that
+     is all that it means now, perhaps in the future it will be
+     extended to cover other kinds of window changes.  */
+  init_sig (SIGWINCH, "WINCH", _("Window changed"));
+#endif
+#if defined (SIGCONT)
+  init_sig (SIGCONT, "CONT", _("Continued"));
+#endif
+#if defined (SIGURG)
+  init_sig (SIGURG, "URG", _("Urgent I/O condition"));
+#endif
+#if defined (SIGIO)
+  /* "I/O pending" has also been suggested.  A disadvantage is that signal
+     only happens when the process has asked for it, not every time I/O is
+     pending.  Another disadvantage is the confusion from giving it a
+     different name than under Unix.  */
+  init_sig (SIGIO, "IO", _("I/O possible"));
+#endif
+#if defined (SIGWIND)
+  init_sig (SIGWIND, "WIND", _("SIGWIND"));
+#endif
+#if defined (SIGPHONE)
+  init_sig (SIGPHONE, "PHONE", _("SIGPHONE"));
+#endif
+#if defined (SIGPOLL)
+  init_sig (SIGPOLL, "POLL", _("I/O possible"));
+#endif
+#if defined (SIGLOST)
+  init_sig (SIGLOST, "LOST", _("Resource lost"));
+#endif
+#if defined (SIGDANGER)
+  init_sig (SIGDANGER, "DANGER", _("Danger signal"));
+#endif
+#if defined (SIGINFO)
+  init_sig (SIGINFO, "INFO", _("Information request"));
+#endif
+#if defined (SIGNOFP)
+  init_sig (SIGNOFP, "NOFP", _("Floating point co-processor not available"));
+#endif
+
+  return 1;
+}
+
+#endif  /* HAVE_DECL_SYS_SIGLIST */
+
+
+char *
+strsignal (int sig)
+{
+  static char buf[] = "Signal 12345678901234567890";
+
+#if ! HAVE_DECL_SYS_SIGLIST
+# if HAVE_DECL__SYS_SIGLIST
+#  define sys_siglist _sys_siglist
+# elif HAVE_DECL___SYS_SIGLIST
+#  define sys_siglist __sys_siglist
+# else
+  static char sig_initted = 0;
+
+  if (!sig_initted)
+    sig_initted = signame_init ();
+# endif
+#endif
+
+  if (sig > 0 && sig < NSIG)
+    return (char *) sys_siglist[sig];
+
+  sprintf (buf, "Signal %d", sig);
+  return buf;
+}
+
+#endif  /* HAVE_STRSIGNAL */
diff --git a/src/kmk/strcache.c b/src/kmk/strcache.c
new file mode 100644
index 0000000..6f5c500
--- /dev/null
+++ b/src/kmk/strcache.c
@@ -0,0 +1,368 @@
+/* Constant string caching for GNU Make.
+Copyright (C) 2006-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#ifndef CONFIG_WITH_STRCACHE2
+
+#include <stddef.h>
+#include <assert.h>
+
+#include "hash.h"
+
+/* A string cached here will never be freed, so we don't need to worry about
+   reference counting.  We just store the string, and then remember it in a
+   hash so it can be looked up again. */
+
+typedef unsigned short int sc_buflen_t;
+
+struct strcache {
+  struct strcache *next;    /* The next block of strings.  Must be first!  */
+  sc_buflen_t end;          /* Offset to the beginning of free space.  */
+  sc_buflen_t bytesfree;    /* Free space left in this buffer.  */
+  sc_buflen_t count;        /* # of strings in this buffer (for stats).  */
+  char buffer[1];           /* The buffer comes after this.  */
+};
+
+/* The size (in bytes) of each cache buffer.
+   Try to pick something that will map well into the heap.
+   This must be able to be represented by a short int (<=65535).  */
+#define CACHE_BUFFER_BASE       (8192)
+#define CACHE_BUFFER_ALLOC(_s)  ((_s) - (2 * sizeof (size_t)))
+#define CACHE_BUFFER_OFFSET     (offsetof (struct strcache, buffer))
+#define CACHE_BUFFER_SIZE(_s)   (CACHE_BUFFER_ALLOC(_s) - CACHE_BUFFER_OFFSET)
+#define BUFSIZE                 CACHE_BUFFER_SIZE (CACHE_BUFFER_BASE)
+
+static struct strcache *strcache = NULL;
+static struct strcache *fullcache = NULL;
+
+static unsigned long total_buffers = 0;
+static unsigned long total_strings = 0;
+static unsigned long total_size = 0;
+
+/* Add a new buffer to the cache.  Add it at the front to reduce search time.
+   This can also increase the overhead, since it's less likely that older
+   buffers will be filled in.  However, GNU make has so many smaller strings
+   that this doesn't seem to be much of an issue in practice.
+ */
+static struct strcache *
+new_cache (struct strcache **head, sc_buflen_t buflen)
+{
+  struct strcache *new = xmalloc (buflen + CACHE_BUFFER_OFFSET);
+  new->end = 0;
+  new->count = 0;
+  new->bytesfree = buflen;
+
+  new->next = *head;
+  *head = new;
+
+  ++total_buffers;
+  return new;
+}
+
+static const char *
+copy_string (struct strcache *sp, const char *str, unsigned int len)
+{
+  /* Add the string to this cache.  */
+  char *res = &sp->buffer[sp->end];
+
+  memmove (res, str, len);
+  res[len++] = '\0';
+  sp->end += len;
+  sp->bytesfree -= len;
+  ++sp->count;
+
+  return res;
+}
+
+static const char *
+add_string (const char *str, unsigned int len)
+{
+  const char *res;
+  struct strcache *sp;
+  struct strcache **spp = &strcache;
+  /* We need space for the nul char.  */
+  unsigned int sz = len + 1;
+
+  ++total_strings;
+  total_size += sz;
+
+  /* If the string we want is too large to fit into a single buffer, then
+     no existing cache is large enough.  Add it directly to the fullcache.  */
+  if (sz > BUFSIZE)
+    {
+      sp = new_cache (&fullcache, sz);
+      return copy_string (sp, str, len);
+    }
+
+  /* Find the first cache with enough free space.  */
+  for (; *spp != NULL; spp = &(*spp)->next)
+    if ((*spp)->bytesfree > sz)
+      break;
+  sp = *spp;
+
+  /* If nothing is big enough, make a new cache at the front.  */
+  if (sp == NULL)
+    {
+      sp = new_cache (&strcache, BUFSIZE);
+      spp = &strcache;
+    }
+
+  /* Add the string to this cache.  */
+  res = copy_string (sp, str, len);
+
+  /* If the amount free in this cache is less than the average string size,
+     consider it full and move it to the full list.  */
+  if (total_strings > 20 && sp->bytesfree < (total_size / total_strings) + 1)
+    {
+      *spp = sp->next;
+      sp->next = fullcache;
+      fullcache = sp;
+    }
+
+  return res;
+}
+
+/* For strings too large for the strcache, we just save them in a list.  */
+struct hugestring {
+  struct hugestring *next;  /* The next string.  */
+  char buffer[1];           /* The string.  */
+};
+
+static struct hugestring *hugestrings = NULL;
+
+static const char *
+add_hugestring (const char *str, unsigned int len)
+{
+  struct hugestring *new = xmalloc (sizeof (struct hugestring) + len);
+  memcpy (new->buffer, str, len);
+  new->buffer[len] = '\0';
+
+  new->next = hugestrings;
+  hugestrings = new;
+
+  return new->buffer;
+}
+
+/* Hash table of strings in the cache.  */
+
+static unsigned long
+str_hash_1 (const void *key)
+{
+  return_ISTRING_HASH_1 ((const char *) key);
+}
+
+static unsigned long
+str_hash_2 (const void *key)
+{
+  return_ISTRING_HASH_2 ((const char *) key);
+}
+
+static int
+str_hash_cmp (const void *x, const void *y)
+{
+  return_ISTRING_COMPARE ((const char *) x, (const char *) y);
+}
+
+static struct hash_table strings;
+static unsigned long total_adds = 0;
+
+static const char *
+add_hash (const char *str, unsigned int len)
+{
+  char *const *slot;
+  const char *key;
+
+  /* If it's too large for the string cache, just copy it.
+     We don't bother trying to match these.  */
+  if (len > USHRT_MAX - 1)
+    return add_hugestring (str, len);
+
+  /* Look up the string in the hash.  If it's there, return it.  */
+  slot = (char *const *) hash_find_slot (&strings, str);
+  key = *slot;
+
+  /* Count the total number of add operations we performed.  */
+  ++total_adds;
+
+  if (!HASH_VACANT (key))
+    return key;
+
+  /* Not there yet so add it to a buffer, then into the hash table.  */
+  key = add_string (str, len);
+  hash_insert_at (&strings, key, slot);
+  return key;
+}
+
+/* Returns true if the string is in the cache; false if not.  */
+int
+strcache_iscached (const char *str)
+{
+  struct strcache *sp;
+
+  for (sp = strcache; sp != 0; sp = sp->next)
+    if (str >= sp->buffer && str < sp->buffer + sp->end)
+      return 1;
+  for (sp = fullcache; sp != 0; sp = sp->next)
+    if (str >= sp->buffer && str < sp->buffer + sp->end)
+      return 1;
+
+  {
+    struct hugestring *hp;
+    for (hp = hugestrings; hp != 0; hp = hp->next)
+      if (str == hp->buffer)
+        return 1;
+  }
+
+  return 0;
+}
+
+/* If the string is already in the cache, return a pointer to the cached
+   version.  If not, add it then return a pointer to the cached version.
+   Note we do NOT take control of the string passed in.  */
+const char *
+strcache_add (const char *str)
+{
+  return add_hash (str, strlen (str));
+}
+
+const char *
+strcache_add_len (const char *str, unsigned int len)
+{
+  /* If we're not given a nul-terminated string we have to create one, because
+     the hashing functions expect it.  */
+  if (str[len] != '\0')
+    {
+      char *key = alloca (len + 1);
+      memcpy (key, str, len);
+      key[len] = '\0';
+      str = key;
+    }
+
+  return add_hash (str, len);
+}
+
+void
+strcache_init (void)
+{
+  hash_init (&strings, 8000, str_hash_1, str_hash_2, str_hash_cmp);
+}
+
+
+/* Generate some stats output.  */
+
+void
+strcache_print_stats (const char *prefix)
+{
+  const struct strcache *sp;
+  unsigned long numbuffs = 0, fullbuffs = 0;
+  unsigned long totfree = 0, maxfree = 0, minfree = BUFSIZE;
+
+  if (! strcache)
+    {
+      printf (_("\n%s No strcache buffers\n"), prefix);
+      return;
+    }
+
+  /* Count the first buffer separately since it's not full.  */
+  for (sp = strcache->next; sp != NULL; sp = sp->next)
+    {
+      sc_buflen_t bf = sp->bytesfree;
+
+      totfree += bf;
+      maxfree = (bf > maxfree ? bf : maxfree);
+      minfree = (bf < minfree ? bf : minfree);
+
+      ++numbuffs;
+    }
+  for (sp = fullcache; sp != NULL; sp = sp->next)
+    {
+      sc_buflen_t bf = sp->bytesfree;
+
+      totfree += bf;
+      maxfree = (bf > maxfree ? bf : maxfree);
+      minfree = (bf < minfree ? bf : minfree);
+
+      ++numbuffs;
+      ++fullbuffs;
+    }
+
+  /* Make sure we didn't lose any buffers.  */
+  assert (total_buffers == numbuffs + 1);
+
+  printf (_("\n%s strcache buffers: %lu (%lu) / strings = %lu / storage = %lu B / avg = %lu B\n"),
+          prefix, numbuffs + 1, fullbuffs, total_strings, total_size,
+          (total_size / total_strings));
+
+  printf (_("%s current buf: size = %hu B / used = %hu B / count = %hu / avg = %hu B\n"),
+          prefix, (sc_buflen_t)BUFSIZE, strcache->end, strcache->count,
+          (strcache->end / strcache->count));
+
+  if (numbuffs)
+    {
+      /* Show information about non-current buffers.  */
+      unsigned long sz = total_size - strcache->end;
+      unsigned long cnt = total_strings - strcache->count;
+      sc_buflen_t avgfree = totfree / numbuffs;
+
+      printf (_("%s other used: total = %lu B / count = %lu / avg = %lu B\n"),
+              prefix, sz, cnt, sz / cnt);
+
+      printf (_("%s other free: total = %lu B / max = %lu B / min = %lu B / avg = %hu B\n"),
+              prefix, totfree, maxfree, minfree, avgfree);
+    }
+
+  printf (_("\n%s strcache performance: lookups = %lu / hit rate = %lu%%\n"),
+          prefix, total_adds, (long unsigned)(100.0 * (total_adds - total_strings) / total_adds));
+  fputs (_("# hash-table stats:\n# "), stdout);
+  hash_print_stats (&strings, stdout);
+}
+
+#else /* CONFIG_WITH_STRCACHE2 */
+
+#include "strcache2.h"
+
+const char *suffixes_strcached;
+
+/* The file string cache. */
+struct strcache2 file_strcache;
+
+void strcache_init (void)
+{
+  strcache2_init(&file_strcache,
+                 "file",        /* name */
+                 131072,        /* hash size */
+                 0,             /* default segment size*/
+#ifdef HAVE_CASE_INSENSITIVE_FS
+                 1,             /* case insensitive */
+#else
+                 0,             /* case insensitive */
+#endif
+                 0);            /* thread safe */
+
+  /* .SUFFIXES is referenced in several loops, keep the added pointer in a
+     global var so these can be optimized. */
+
+  suffixes_strcached = strcache_add_len (".SUFFIXES", sizeof (".SUFFIXES")-1);
+}
+
+void
+strcache_print_stats (const char *prefix)
+{
+  strcache2_print_stats (&file_strcache, prefix);
+}
+
+#endif /* CONFIG_WITH_STRCACHE2 */
+
diff --git a/src/kmk/strcache2.c b/src/kmk/strcache2.c
new file mode 100644
index 0000000..c2bad20
--- /dev/null
+++ b/src/kmk/strcache2.c
@@ -0,0 +1,1327 @@
+/* $Id: strcache2.c 3140 2018-03-14 21:28:10Z bird $ */
+/** @file
+ * strcache2 - New string cache.
+ */
+
+/*
+ * Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "makeint.h"
+#include "strcache2.h"
+
+#include <assert.h>
+
+#include "debug.h"
+
+#ifdef _MSC_VER
+typedef unsigned char  uint8_t;
+typedef unsigned short uint16_t;
+typedef unsigned int   uint32_t;
+typedef signed char    int8_t;
+typedef signed short   int16_t;
+typedef signed int     int32_t;
+#else
+# include <stdint.h>
+#endif
+
+#ifdef WINDOWS32
+# include <io.h>
+# include <process.h>
+# include <Windows.h>
+# define PARSE_IN_WORKER
+#endif
+
+#ifdef __OS2__
+# include <sys/fmutex.h>
+#endif
+
+#ifdef HAVE_PTHREAD
+# include <pthread.h>
+#endif
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/* The default size of a memory segment (1MB). */
+#define STRCACHE2_SEG_SIZE              (1024U*1024U)
+/* The default hash table shift (hash size give as a power of two). */
+#define STRCACHE2_HASH_SHIFT            16
+/** Does the modding / masking of a hash number into an index. */
+#ifdef STRCACHE2_USE_MASK
+# define STRCACHE2_MOD_IT(cache, hash)  ((hash) & (cache)->hash_mask)
+#else
+# define STRCACHE2_MOD_IT(cache, hash)  ((hash) % (cache)->hash_div)
+#endif
+
+# if (   defined(__amd64__) || defined(__x86_64__) || defined(__AMD64__) || defined(_M_X64) || defined(__amd64) \
+      || defined(__i386__) || defined(__x86__) || defined(__X86__) || defined(_M_IX86) || defined(__i386)) \
+  && !defined(GCC_ADDRESS_SANITIZER)
+#  define strcache2_get_unaligned_16bits(ptr)   ( *((const uint16_t *)(ptr)))
+# else
+   /* (endian doesn't matter) */
+#  define strcache2_get_unaligned_16bits(ptr)   (   (((const uint8_t *)(ptr))[0] << 8) \
+                                                  | (((const uint8_t *)(ptr))[1]) )
+# endif
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/* List of initialized string caches. */
+static struct strcache2 *strcache_head;
+
+
+#ifndef STRCACHE2_USE_MASK
+/** Finds the closest primary number for power of two value (or something else
+ *  useful if not support).   */
+MY_INLINE unsigned int strcache2_find_prime(unsigned int shift)
+{
+  switch (shift)
+    {
+      case  5:  return 31;
+      case  6:  return 61;
+      case  7:  return 127;
+      case  8:  return 251;
+      case  9:  return 509;
+      case 10:  return 1021;
+      case 11:  return 2039;
+      case 12:  return 4093;
+      case 13:  return 8191;
+      case 14:  return 16381;
+      case 15:  return 32749;
+      case 16:  return 65521;
+      case 17:  return 131063;
+      case 18:  return 262139;
+      case 19:  return 524269;
+      case 20:  return 1048573;
+      case 21:  return 2097143;
+      case 22:  return 4194301;
+      case 23:  return 8388593;
+
+      default:
+          assert (0);
+          return (1 << shift) - 1;
+    }
+}
+#endif
+
+/* The following is a bit experiment. It produces longer chains, i.e. worse
+   distribution of the strings in the table, however the actual make
+   performances is better (<time).  The explanation is probably that the
+   collisions only really increase for entries that aren't looked up that
+   much and that it actually improoves the situation for those that is. Or
+   that we spend so much less time hashing that it makes up (and more) for
+   the pentalty we suffer from the longer chains and worse distribution.
+
+   XXX: Check how this works out with different path lengths. I suspect it
+        might depend on the length of PATH_ROOT and the depth of the files
+        in the project as well. If it does, this might make matters worse
+        for some and better for others which isn't very cool...  */
+
+#if 0
+# define BIG_HASH_SIZE  32 /* kinda fast */
+# define BIG_HASH_HEAD  16
+# define BIG_HASH_TAIL  12
+#elif 0
+# define BIG_HASH_SIZE  68 /* kinda safe */
+# define BIG_HASH_HEAD  24
+# define BIG_HASH_TAIL  24
+#elif 0
+# define BIG_HASH_SIZE 128 /* safe */
+# define BIG_HASH_HEAD  32
+# define BIG_HASH_TAIL  32
+#endif
+
+#ifdef BIG_HASH_SIZE
+/* long string: hash head and tail, drop the middle. */
+MY_INLINE unsigned int
+strcache2_case_sensitive_hash_big (const char *str, unsigned int len)
+{
+  uint32_t hash = len;
+  uint32_t tmp;
+  unsigned int head;
+
+  /* head BIG_HASH_HEAD bytes */
+  head = (BIG_HASH_HEAD >> 2);
+  while (head-- > 0)
+    {
+      hash += strcache2_get_unaligned_16bits (str);
+      tmp   = (strcache2_get_unaligned_16bits (str + 2) << 11) ^ hash;
+      hash  = (hash << 16) ^ tmp;
+      str  += 2 * sizeof (uint16_t);
+      hash += hash >> 11;
+    }
+
+  /* tail BIG_HASH_TAIL bytes (minus the odd ones) */
+  str += (len - BIG_HASH_HEAD - BIG_HASH_TAIL) & ~3U;
+  head = (BIG_HASH_TAIL >> 2);
+  while (head-- > 0)
+    {
+      hash += strcache2_get_unaligned_16bits (str);
+      tmp   = (strcache2_get_unaligned_16bits (str + 2) << 11) ^ hash;
+      hash  = (hash << 16) ^ tmp;
+      str  += 2 * sizeof (uint16_t);
+      hash += hash >> 11;
+    }
+
+  /* force "avalanching" of final 127 bits. */
+  hash ^= hash << 3;
+  hash += hash >> 5;
+  hash ^= hash << 4;
+  hash += hash >> 17;
+  hash ^= hash << 25;
+  hash += hash >> 6;
+
+  return hash;
+}
+#endif /* BIG_HASH_SIZE */
+
+MY_INLINE unsigned int
+strcache2_case_sensitive_hash (const char *str, unsigned int len)
+{
+#if 1
+  /* Paul Hsieh hash SuperFast function:
+     http://www.azillionmonkeys.com/qed/hash.html
+
+     This performs very good and as a sligtly better distribution than
+     STRING_N_HASH_1 on a typical kBuild run.
+
+     It is also 37% faster than return_STRING_N_HASH_1 when running the
+     two 100 times over typical kBuild strings that end up here (did a
+     fprintf here and built kBuild). Compiler was 32-bit gcc 4.0.1, darwin,
+     with -O2.
+
+     FIXME: A path for well aligned data should be added to speed up
+            execution on alignment sensitive systems.  */
+  unsigned int rem;
+  uint32_t hash;
+  uint32_t tmp;
+
+  assert (sizeof (uint8_t) == sizeof (char));
+
+# ifdef BIG_HASH_SIZE
+  /* long string? */
+#  if 0 /*BIG_HASH_SIZE > 128*/
+  if (MY_PREDICT_FALSE(len >= BIG_HASH_SIZE))
+#  else
+  if (len >= BIG_HASH_SIZE)
+#  endif
+    return strcache2_case_sensitive_hash_big (str, len);
+# endif
+
+  /* short string: main loop, walking on 2 x uint16_t */
+  hash = len;
+  rem = len & 3;
+  len >>= 2;
+  while (len > 0)
+    {
+      hash += strcache2_get_unaligned_16bits (str);
+      tmp   = (strcache2_get_unaligned_16bits (str + 2) << 11) ^ hash;
+      hash  = (hash << 16) ^ tmp;
+      str  += 2 * sizeof (uint16_t);
+      hash += hash >> 11;
+      len--;
+    }
+
+  /* the remainder */
+  switch (rem)
+    {
+      case 3:
+        hash += strcache2_get_unaligned_16bits (str);
+        hash ^= hash << 16;
+        hash ^= str[sizeof (uint16_t)] << 18;
+        hash += hash >> 11;
+        break;
+      case 2:
+        hash += strcache2_get_unaligned_16bits (str);
+        hash ^= hash << 11;
+        hash += hash >> 17;
+        break;
+      case 1:
+        hash += *str;
+        hash ^= hash << 10;
+        hash += hash >> 1;
+        break;
+    }
+
+  /* force "avalanching" of final 127 bits. */
+  hash ^= hash << 3;
+  hash += hash >> 5;
+  hash ^= hash << 4;
+  hash += hash >> 17;
+  hash ^= hash << 25;
+  hash += hash >> 6;
+
+  return hash;
+
+#elif 1
+  /* Note! This implementation is 18% faster than return_STRING_N_HASH_1
+           when running the two 100 times over typical kBuild strings that
+           end up here (did a fprintf here and built kBuild).
+           Compiler was 32-bit gcc 4.0.1, darwin, with -O2. */
+
+  unsigned int hash = 0;
+  if (MY_PREDICT_TRUE(len >= 2))
+    {
+      unsigned int ch0 = *str++;
+      hash = 0;
+      len--;
+      while (len >= 2)
+        {
+          unsigned int ch1 = *str++;
+          hash += ch0 << (ch1 & 0xf);
+
+          ch0 = *str++;
+          hash += ch1 << (ch0 & 0xf);
+
+          len -= 2;
+        }
+      if (len == 1)
+        {
+          unsigned ch1 = *str;
+          hash += ch0 << (ch1 & 0xf);
+
+          hash += ch1;
+        }
+      else
+        hash += ch0;
+    }
+  else if (len)
+    {
+      hash = *str;
+      hash += hash << (hash & 0xf);
+    }
+  else
+    hash = 0;
+  return hash;
+
+#elif 1
+# if 0
+  /* This is SDBM.  This specific form/unroll was benchmarked to be 28% faster
+     than return_STRING_N_HASH_1.  (Now the weird thing is that putting the (ch)
+     first in the assignment made it noticably slower.)
+
+     However, it is noticably slower in practice, most likely because of more
+     collisions.  Hrmpf.  */
+
+#  define UPDATE_HASH(ch) hash = (hash << 6) + (hash << 16) - hash + (ch)
+  unsigned int hash = 0;
+
+# else
+ /* This is DJB2.  This specific form/unroll was benchmarked to be 27%
+    fast than return_STRING_N_HASH_1.
+
+    Ditto.  */
+
+#  define UPDATE_HASH(ch) hash = (hash << 5) + hash + (ch)
+  unsigned int hash = 5381;
+# endif
+
+
+  while (len >= 4)
+    {
+      UPDATE_HASH (str[0]);
+      UPDATE_HASH (str[1]);
+      UPDATE_HASH (str[2]);
+      UPDATE_HASH (str[3]);
+      str += 4;
+      len -= 4;
+    }
+  switch (len)
+    {
+      default:
+      case 0:
+        return hash;
+      case 1:
+        UPDATE_HASH (str[0]);
+        return hash;
+      case 2:
+        UPDATE_HASH (str[0]);
+        UPDATE_HASH (str[1]);
+        return hash;
+      case 3:
+        UPDATE_HASH (str[0]);
+        UPDATE_HASH (str[1]);
+        UPDATE_HASH (str[2]);
+        return hash;
+    }
+#endif
+}
+
+MY_INLINE unsigned int
+strcache2_case_insensitive_hash (const char *str, unsigned int len)
+{
+  unsigned int hash = 0;
+  if (MY_PREDICT_TRUE(len >= 2))
+    {
+      unsigned int ch0 = *str++;
+      ch0 = tolower (ch0);
+      hash = 0;
+      len--;
+      while (len >= 2)
+        {
+          unsigned int ch1 = *str++;
+          ch1 = tolower (ch1);
+          hash += ch0 << (ch1 & 0xf);
+
+          ch0 = *str++;
+          ch0 = tolower (ch0);
+          hash += ch1 << (ch0 & 0xf);
+
+          len -= 2;
+        }
+      if (len == 1)
+        {
+          unsigned ch1 = *str;
+          ch1 = tolower (ch1);
+          hash += ch0 << (ch1 & 0xf);
+
+          hash += ch1;
+        }
+      else
+        hash += ch0;
+    }
+  else if (len)
+    {
+      hash = *str;
+      hash += hash << (hash & 0xf);
+    }
+  else
+    hash = 0;
+  return hash;
+}
+
+#if 0
+MY_INLINE int
+strcache2_memcmp_inline_short (const char *xs, const char *ys, unsigned int length)
+{
+  if (length <= 8)
+    {
+      /* short string compare - ~50% of the kBuild calls. */
+      assert ( !((size_t)ys & 3) );
+      if (!((size_t)xs & 3))
+        {
+          /* aligned */
+          int result;
+          switch (length)
+            {
+              default: /* memcmp for longer strings */
+                  return memcmp (xs, ys, length);
+              case 8:
+                  result  = *(int32_t*)(xs + 4) - *(int32_t*)(ys + 4);
+                  result |= *(int32_t*)xs - *(int32_t*)ys;
+                  return result;
+              case 7:
+                  result  = xs[6] - ys[6];
+                  result |= xs[5] - ys[5];
+                  result |= xs[4] - ys[4];
+                  result |= *(int32_t*)xs - *(int32_t*)ys;
+                  return result;
+              case 6:
+                  result  = xs[5] - ys[5];
+                  result |= xs[4] - ys[4];
+                  result |= *(int32_t*)xs - *(int32_t*)ys;
+                  return result;
+              case 5:
+                  result  = xs[4] - ys[4];
+                  result |= *(int32_t*)xs - *(int32_t*)ys;
+                  return result;
+              case 4:
+                  return *(int32_t*)xs - *(int32_t*)ys;
+              case 3:
+                  result  = xs[2] - ys[2];
+                  result |= xs[1] - ys[1];
+                  result |= xs[0] - ys[0];
+                  return result;
+              case 2:
+                  result  = xs[1] - ys[1];
+                  result |= xs[0] - ys[0];
+                  return result;
+              case 1:
+                  return *xs - *ys;
+              case 0:
+                  return 0;
+            }
+        }
+      else
+        {
+          /* unaligned */
+          int result = 0;
+          switch (length)
+            {
+              case 8: result |= xs[7] - ys[7];
+              case 7: result |= xs[6] - ys[6];
+              case 6: result |= xs[5] - ys[5];
+              case 5: result |= xs[4] - ys[4];
+              case 4: result |= xs[3] - ys[3];
+              case 3: result |= xs[2] - ys[2];
+              case 2: result |= xs[1] - ys[1];
+              case 1: result |= xs[0] - ys[0];
+              case 0:
+                  return result;
+            }
+        }
+    }
+
+  /* memcmp for longer strings */
+  return memcmp (xs, ys, length);
+}
+#endif
+
+MY_INLINE int
+strcache2_memcmp_inlined (const char *xs, const char *ys, unsigned int length)
+{
+#ifndef ELECTRIC_HEAP
+  assert ( !((size_t)ys & 3) );
+#endif
+  if (!((size_t)xs & 3))
+    {
+      /* aligned */
+      int result;
+      unsigned reminder = length & 7;
+      length >>= 3;
+      while (length-- > 0)
+        {
+          result  = *(int32_t*)xs - *(int32_t*)ys;
+          result |= *(int32_t*)(xs + 4) - *(int32_t*)(ys + 4);
+          if (MY_PREDICT_FALSE(result))
+            return result;
+          xs += 8;
+          ys += 8;
+        }
+      switch (reminder)
+        {
+          case 7:
+              result  = *(int32_t*)xs - *(int32_t*)ys;
+              result |= xs[6] - ys[6];
+              result |= xs[5] - ys[5];
+              result |= xs[4] - ys[4];
+              return result;
+          case 6:
+              result  = *(int32_t*)xs - *(int32_t*)ys;
+              result |= xs[5] - ys[5];
+              result |= xs[4] - ys[4];
+              return result;
+          case 5:
+              result  = *(int32_t*)xs - *(int32_t*)ys;
+              result |= xs[4] - ys[4];
+              return result;
+          case 4:
+              return *(int32_t*)xs - *(int32_t*)ys;
+          case 3:
+              result  = xs[2] - ys[2];
+              result |= xs[1] - ys[1];
+              result |= xs[0] - ys[0];
+              return result;
+          case 2:
+              result  = xs[1] - ys[1];
+              result |= xs[0] - ys[0];
+              return result;
+          case 1:
+              return *xs - *ys;
+          default:
+          case 0:
+              return 0;
+        }
+    }
+  else
+    {
+      /* unaligned */
+      int result;
+      unsigned reminder = length & 7;
+      length >>= 3;
+      while (length-- > 0)
+        {
+#if defined(__i386__) || defined(__x86_64__)
+          result  = (  ((int32_t)xs[3] << 24)
+                     | ((int32_t)xs[2] << 16)
+                     | ((int32_t)xs[1] <<  8)
+                     |           xs[0]       )
+                  - *(int32_t*)ys;
+          result |= (  ((int32_t)xs[7] << 24)
+                     | ((int32_t)xs[6] << 16)
+                     | ((int32_t)xs[5] <<  8)
+                     |           xs[4]       )
+                  - *(int32_t*)(ys + 4);
+#else
+          result  = xs[3] - ys[3];
+          result |= xs[2] - ys[2];
+          result |= xs[1] - ys[1];
+          result |= xs[0] - ys[0];
+          result |= xs[7] - ys[7];
+          result |= xs[6] - ys[6];
+          result |= xs[5] - ys[5];
+          result |= xs[4] - ys[4];
+#endif
+          if (MY_PREDICT_FALSE(result))
+            return result;
+          xs += 8;
+          ys += 8;
+        }
+
+      result = 0;
+      switch (reminder)
+        {
+          case 7: result |= xs[6] - ys[6]; /* fall thru */
+          case 6: result |= xs[5] - ys[5]; /* fall thru */
+          case 5: result |= xs[4] - ys[4]; /* fall thru */
+          case 4: result |= xs[3] - ys[3]; /* fall thru */
+          case 3: result |= xs[2] - ys[2]; /* fall thru */
+          case 2: result |= xs[1] - ys[1]; /* fall thru */
+          case 1: result |= xs[0] - ys[0]; /* fall thru */
+              return result;
+          default:
+          case 0:
+              return 0;
+        }
+    }
+}
+
+MY_INLINE int
+strcache2_is_equal (struct strcache2 *cache, struct strcache2_entry const *entry,
+                    const char *str, unsigned int length, unsigned int hash)
+{
+  assert (!cache->case_insensitive);
+
+  /* the simple stuff first. */
+  if (   entry->hash != hash
+      || entry->length != length)
+      return 0;
+
+#if 0
+  return memcmp (str, entry + 1, length) == 0;
+#elif 1
+  return strcache2_memcmp_inlined (str, (const char *)(entry + 1), length) == 0;
+#else
+  return strcache2_memcmp_inline_short (str, (const char *)(entry + 1), length) == 0;
+#endif
+}
+
+#if defined(HAVE_CASE_INSENSITIVE_FS)
+MY_INLINE int
+strcache2_is_iequal (struct strcache2 *cache, struct strcache2_entry const *entry,
+                     const char *str, unsigned int length, unsigned int hash)
+{
+  assert (cache->case_insensitive);
+
+  /* the simple stuff first. */
+  if (   entry->hash != hash
+      || entry->length != length)
+      return 0;
+
+# if defined(_MSC_VER) || defined(__OS2__)
+  return _memicmp (entry + 1, str, length) == 0;
+# else
+  return strncasecmp ((const char *)(entry + 1), str, length) == 0;
+# endif
+}
+#endif /* HAVE_CASE_INSENSITIVE_FS */
+
+static void
+strcache2_rehash (struct strcache2 *cache)
+{
+  unsigned int src = cache->hash_size;
+  struct strcache2_entry **src_tab = cache->hash_tab;
+  struct strcache2_entry **dst_tab;
+#ifndef STRCACHE2_USE_MASK
+  unsigned int hash_shift;
+#endif
+
+  /* Allocate a new hash table twice the size of the current. */
+  cache->hash_size <<= 1;
+#ifdef STRCACHE2_USE_MASK
+  cache->hash_mask <<= 1;
+  cache->hash_mask |= 1;
+#else
+  for (hash_shift = 1; (1U << hash_shift) < cache->hash_size; hash_shift++)
+    /* nothing */;
+  cache->hash_div = strcache2_find_prime (hash_shift);
+#endif
+  cache->rehash_count <<= 1;
+  cache->hash_tab = dst_tab = (struct strcache2_entry **)
+    xmalloc (cache->hash_size * sizeof (struct strcache2_entry *));
+  memset (dst_tab, '\0', cache->hash_size * sizeof (struct strcache2_entry *));
+
+  /* Copy the entries from the old to the new hash table. */
+  cache->collision_count = 0;
+  while (src-- > 0)
+    {
+      struct strcache2_entry *entry = src_tab[src];
+      while (entry)
+        {
+          struct strcache2_entry *next = entry->next;
+          unsigned int dst = STRCACHE2_MOD_IT (cache, entry->hash);
+          if ((entry->next = dst_tab[dst]) != 0)
+            cache->collision_count++;
+          dst_tab[dst] = entry;
+
+          entry = next;
+        }
+    }
+
+  /* That's it, just free the old table and we're done. */
+  free (src_tab);
+}
+
+static struct strcache2_seg *
+strcache2_new_seg (struct strcache2 *cache, unsigned int minlen)
+{
+  struct strcache2_seg *seg;
+  size_t size;
+  size_t off;
+
+  size = cache->def_seg_size;
+  if (size < (size_t)minlen + sizeof (struct strcache2_seg) + STRCACHE2_ENTRY_ALIGNMENT)
+    {
+      size = (size_t)minlen * 2;
+      size = (size + 0xfff) & ~(size_t)0xfff;
+    }
+
+  seg = xmalloc (size);
+  seg->start = (char *)(seg + 1);
+  seg->size  = size - sizeof (struct strcache2_seg);
+  off = (size_t)seg->start & (STRCACHE2_ENTRY_ALIGNMENT - 1);
+  if (off)
+    {
+      off = STRCACHE2_ENTRY_ALIGNMENT - off;
+      seg->start += off;
+      seg->size  -= off;
+    }
+  assert (seg->size > minlen);
+  seg->cursor = seg->start;
+  seg->avail  = seg->size;
+
+  seg->next = cache->seg_head;
+  cache->seg_head = seg;
+
+  return seg;
+}
+
+/* Internal worker that enters a new string into the cache. */
+static const char *
+strcache2_enter_string (struct strcache2 *cache, unsigned int idx,
+                        const char *str, unsigned int length,
+                        unsigned int hash)
+{
+  struct strcache2_entry *entry;
+  struct strcache2_seg *seg;
+  unsigned int size;
+  char *str_copy;
+
+  /* Allocate space for the string. */
+
+  size = length + 1 + sizeof (struct strcache2_entry);
+  size = (size + STRCACHE2_ENTRY_ALIGNMENT - 1) & ~(STRCACHE2_ENTRY_ALIGNMENT - 1U);
+
+  seg = cache->seg_head;
+  if (MY_PREDICT_FALSE(seg->avail < size))
+    {
+      do
+        seg = seg->next;
+      while (seg && seg->avail < size);
+      if (!seg)
+        seg = strcache2_new_seg (cache, size);
+    }
+
+  entry = (struct strcache2_entry *) seg->cursor;
+  assert (!((size_t)entry & (STRCACHE2_ENTRY_ALIGNMENT - 1)));
+  seg->cursor += size;
+  seg->avail -= size;
+
+  /* Setup the entry, copy the string and insert it into the hash table. */
+
+  entry->user = NULL;
+  entry->length = length;
+  entry->hash = hash;
+  str_copy = (char *) memcpy (entry + 1, str, length);
+  str_copy[length] = '\0';
+
+  if ((entry->next = cache->hash_tab[idx]) != 0)
+    cache->collision_count++;
+  cache->hash_tab[idx] = entry;
+  cache->count++;
+  if (cache->count >= cache->rehash_count)
+    strcache2_rehash (cache);
+
+  return str_copy;
+}
+
+/* The public add string interface. */
+const char *
+strcache2_add (struct strcache2 *cache, const char *str, unsigned int length)
+{
+  struct strcache2_entry const *entry;
+  unsigned int hash = strcache2_case_sensitive_hash (str, length);
+  unsigned int idx;
+
+  assert (!cache->case_insensitive);
+  assert (!memchr (str, '\0', length));
+
+  MAKE_STATS (cache->lookup_count++);
+
+  /* Lookup the entry in the hash table, hoping for an
+     early match.  If not found, enter the string at IDX. */
+  idx = STRCACHE2_MOD_IT (cache, hash);
+  entry = cache->hash_tab[idx];
+  if (!entry)
+    return strcache2_enter_string (cache, idx, str, length, hash);
+  if (strcache2_is_equal (cache, entry, str, length, hash))
+    return (const char *)(entry + 1);
+  MAKE_STATS (cache->collision_1st_count++);
+
+  entry = entry->next;
+  if (!entry)
+    return strcache2_enter_string (cache, idx, str, length, hash);
+  if (strcache2_is_equal (cache, entry, str, length, hash))
+    return (const char *)(entry + 1);
+  MAKE_STATS (cache->collision_2nd_count++);
+
+  /* Loop the rest.  */
+  for (;;)
+    {
+      entry = entry->next;
+      if (!entry)
+        return strcache2_enter_string (cache, idx, str, length, hash);
+      if (strcache2_is_equal (cache, entry, str, length, hash))
+        return (const char *)(entry + 1);
+      MAKE_STATS (cache->collision_3rd_count++);
+    }
+  /* not reached */
+}
+
+/* The public add string interface for prehashed strings.
+   Use strcache2_hash_str to calculate the hash of a string. */
+const char *
+strcache2_add_hashed (struct strcache2 *cache, const char *str,
+                      unsigned int length, unsigned int hash)
+{
+  struct strcache2_entry const *entry;
+  unsigned int idx;
+#ifndef NDEBUG
+  unsigned correct_hash;
+
+  assert (!cache->case_insensitive);
+  assert (!memchr (str, '\0', length));
+  correct_hash = strcache2_case_sensitive_hash (str, length);
+  MY_ASSERT_MSG (hash == correct_hash, ("%#x != %#x\n", hash, correct_hash));
+#endif /* NDEBUG */
+
+  MAKE_STATS (cache->lookup_count++);
+
+  /* Lookup the entry in the hash table, hoping for an
+     early match.  If not found, enter the string at IDX. */
+  idx = STRCACHE2_MOD_IT (cache, hash);
+  entry = cache->hash_tab[idx];
+  if (!entry)
+    return strcache2_enter_string (cache, idx, str, length, hash);
+  if (strcache2_is_equal (cache, entry, str, length, hash))
+    return (const char *)(entry + 1);
+  MAKE_STATS (cache->collision_1st_count++);
+
+  entry = entry->next;
+  if (!entry)
+    return strcache2_enter_string (cache, idx, str, length, hash);
+  if (strcache2_is_equal (cache, entry, str, length, hash))
+    return (const char *)(entry + 1);
+  MAKE_STATS (cache->collision_2nd_count++);
+
+  /* Loop the rest.  */
+  for (;;)
+    {
+      entry = entry->next;
+      if (!entry)
+        return strcache2_enter_string (cache, idx, str, length, hash);
+      if (strcache2_is_equal (cache, entry, str, length, hash))
+        return (const char *)(entry + 1);
+      MAKE_STATS (cache->collision_3rd_count++);
+    }
+  /* not reached */
+}
+
+/* The public lookup (case sensitive) string interface. */
+const char *
+strcache2_lookup (struct strcache2 *cache, const char *str, unsigned int length)
+{
+  struct strcache2_entry const *entry;
+  unsigned int hash = strcache2_case_sensitive_hash (str, length);
+  unsigned int idx;
+
+  assert (!cache->case_insensitive);
+  assert (!memchr (str, '\0', length));
+
+  MAKE_STATS (cache->lookup_count++);
+
+  /* Lookup the entry in the hash table, hoping for an
+     early match. */
+  idx = STRCACHE2_MOD_IT (cache, hash);
+  entry = cache->hash_tab[idx];
+  if (!entry)
+    return NULL;
+  if (strcache2_is_equal (cache, entry, str, length, hash))
+    return (const char *)(entry + 1);
+  MAKE_STATS (cache->collision_1st_count++);
+
+  entry = entry->next;
+  if (!entry)
+    return NULL;
+  if (strcache2_is_equal (cache, entry, str, length, hash))
+    return (const char *)(entry + 1);
+  MAKE_STATS (cache->collision_2nd_count++);
+
+  /* Loop the rest. */
+  for (;;)
+    {
+      entry = entry->next;
+      if (!entry)
+        return NULL;
+      if (strcache2_is_equal (cache, entry, str, length, hash))
+        return (const char *)(entry + 1);
+      MAKE_STATS (cache->collision_3rd_count++);
+    }
+  /* not reached */
+}
+
+#if defined(HAVE_CASE_INSENSITIVE_FS)
+
+/* The public add string interface for case insensitive strings. */
+const char *
+strcache2_iadd (struct strcache2 *cache, const char *str, unsigned int length)
+{
+  struct strcache2_entry const *entry;
+  unsigned int hash = strcache2_case_insensitive_hash (str, length);
+  unsigned int idx;
+
+  assert (cache->case_insensitive);
+  assert (!memchr (str, '\0', length));
+
+  MAKE_STATS (cache->lookup_count++);
+
+  /* Lookup the entry in the hash table, hoping for an
+     early match.  If not found, enter the string at IDX. */
+  idx = STRCACHE2_MOD_IT (cache, hash);
+  entry = cache->hash_tab[idx];
+  if (!entry)
+    return strcache2_enter_string (cache, idx, str, length, hash);
+  if (strcache2_is_iequal (cache, entry, str, length, hash))
+    return (const char *)(entry + 1);
+  MAKE_STATS (cache->collision_1st_count++);
+
+  entry = entry->next;
+  if (!entry)
+    return strcache2_enter_string (cache, idx, str, length, hash);
+  if (strcache2_is_iequal (cache, entry, str, length, hash))
+    return (const char *)(entry + 1);
+  MAKE_STATS (cache->collision_2nd_count++);
+
+  /* Loop the rest. */
+  for (;;)
+    {
+      entry = entry->next;
+      if (!entry)
+        return strcache2_enter_string (cache, idx, str, length, hash);
+      if (strcache2_is_iequal (cache, entry, str, length, hash))
+        return (const char *)(entry + 1);
+      MAKE_STATS (cache->collision_3rd_count++);
+    }
+  /* not reached */
+}
+
+/* The public add string interface for prehashed case insensitive strings.
+   Use strcache2_hash_istr to calculate the hash of a string. */
+const char *
+strcache2_iadd_hashed (struct strcache2 *cache, const char *str,
+                       unsigned int length, unsigned int hash)
+{
+  struct strcache2_entry const *entry;
+  unsigned int idx;
+#ifndef NDEBUG
+  unsigned correct_hash;
+
+  assert (cache->case_insensitive);
+  assert (!memchr (str, '\0', length));
+  correct_hash = strcache2_case_insensitive_hash (str, length);
+  MY_ASSERT_MSG (hash == correct_hash, ("%#x != %#x\n", hash, correct_hash));
+#endif /* NDEBUG */
+
+  MAKE_STATS (cache->lookup_count++);
+
+  /* Lookup the entry in the hash table, hoping for an
+     early match.  If not found, enter the string at IDX. */
+  idx = STRCACHE2_MOD_IT (cache, hash);
+  entry = cache->hash_tab[idx];
+  if (!entry)
+    return strcache2_enter_string (cache, idx, str, length, hash);
+  if (strcache2_is_iequal (cache, entry, str, length, hash))
+    return (const char *)(entry + 1);
+  MAKE_STATS (cache->collision_1st_count++);
+
+  entry = entry->next;
+  if (!entry)
+    return strcache2_enter_string (cache, idx, str, length, hash);
+  if (strcache2_is_iequal (cache, entry, str, length, hash))
+    return (const char *)(entry + 1);
+  MAKE_STATS (cache->collision_2nd_count++);
+
+  /* Loop the rest. */
+  for (;;)
+    {
+      entry = entry->next;
+      if (!entry)
+        return strcache2_enter_string (cache, idx, str, length, hash);
+      if (strcache2_is_iequal (cache, entry, str, length, hash))
+        return (const char *)(entry + 1);
+      MAKE_STATS (cache->collision_3rd_count++);
+    }
+  /* not reached */
+}
+
+/* The public lookup (case insensitive) string interface. */
+const char *
+strcache2_ilookup (struct strcache2 *cache, const char *str, unsigned int length)
+{
+  struct strcache2_entry const *entry;
+  unsigned int hash = strcache2_case_insensitive_hash (str, length);
+  unsigned int idx;
+
+  assert (cache->case_insensitive);
+  assert (!memchr (str, '\0', length));
+
+  MAKE_STATS (cache->lookup_count++);
+
+  /* Lookup the entry in the hash table, hoping for an
+     early match. */
+  idx = STRCACHE2_MOD_IT (cache, hash);
+  entry = cache->hash_tab[idx];
+  if (!entry)
+    return NULL;
+  if (strcache2_is_iequal (cache, entry, str, length, hash))
+    return (const char *)(entry + 1);
+  MAKE_STATS (cache->collision_1st_count++);
+
+  entry = entry->next;
+  if (!entry)
+    return NULL;
+  if (strcache2_is_iequal (cache, entry, str, length, hash))
+    return (const char *)(entry + 1);
+  MAKE_STATS (cache->collision_2nd_count++);
+
+  /* Loop the rest. */
+  for (;;)
+    {
+      entry = entry->next;
+      if (!entry)
+        return NULL;
+      if (strcache2_is_iequal (cache, entry, str, length, hash))
+        return (const char *)(entry + 1);
+      MAKE_STATS (cache->collision_3rd_count++);
+    }
+  /* not reached */
+}
+
+#endif /* HAVE_CASE_INSENSITIVE_FS */
+
+/* Is the given string cached? returns 1 if it is, 0 if it isn't. */
+int
+strcache2_is_cached (struct strcache2 *cache, const char *str)
+{
+  /* Check mandatory alignment first. */
+  if (!((size_t)str & (sizeof (void *) - 1)))
+    {
+      /* Check the segment list and consider the question answered if the
+         string is within one of them. (Could check it more thoroughly...) */
+      struct strcache2_seg const *seg;
+      for (seg = cache->seg_head; seg; seg = seg->next)
+        if ((size_t)(str - seg->start) < seg->size)
+            return 1;
+    }
+
+  return 0;
+}
+
+
+/* Verify the integrity of the specified string, returning 0 if OK. */
+int
+strcache2_verify_entry (struct strcache2 *cache, const char *str)
+{
+  struct strcache2_entry const *entry;
+  unsigned int hash;
+  unsigned int length;
+  const char *end;
+
+  entry = (struct strcache2_entry const *)str - 1;
+  if ((size_t)entry & (STRCACHE2_ENTRY_ALIGNMENT - 1))
+    {
+      fprintf (stderr,
+               "strcache2[%s]: missaligned entry %p\nstring: %p=%s\n",
+               cache->name, (void *)entry, (void *)str, str);
+      return -1;
+    }
+
+  end = memchr (str, '\0', entry->length + 1);
+  length = end - str;
+  if (length != entry->length)
+    {
+      fprintf (stderr,
+               "strcache2[%s]: corrupt entry %p, length: %u, expected %u;\nstring: %s\n",
+               cache->name, (void *)entry, length, entry->length, str);
+      return -1;
+    }
+
+  hash = cache->case_insensitive
+    ? strcache2_case_insensitive_hash (str, entry->length)
+    : strcache2_case_sensitive_hash (str, entry->length);
+  if (hash != entry->hash)
+    {
+      fprintf (stderr,
+               "strcache2[%s]: corrupt entry %p, hash: %x, expected %x;\nstring: %s\n",
+               cache->name, (void *)entry, hash, entry->hash, str);
+      return -1;
+    }
+
+  return 0;
+}
+
+
+/* Calculates the case sensitive hash values of the string.
+   The first hash is returned, the other is put at HASH2P. */
+unsigned int strcache2_hash_str (const char *str, unsigned int length, unsigned int *hash2p)
+{
+  *hash2p = 1;
+  return    strcache2_case_sensitive_hash (str, length);
+}
+
+/* Calculates the case insensitive hash values of the string.
+   The first hash is returned, the other is put at HASH2P. */
+unsigned int strcache2_hash_istr (const char *str, unsigned int length, unsigned int *hash2p)
+{
+  *hash2p = 1;
+  return    strcache2_case_insensitive_hash (str, length);
+}
+
+
+
+/* Initalizes a new cache. */
+void
+strcache2_init (struct strcache2 *cache, const char *name, unsigned int size,
+                unsigned int def_seg_size, int case_insensitive, int thread_safe)
+{
+  unsigned hash_shift;
+  assert (!thread_safe);
+
+  /* calc the size as a power of two */
+  if (!size)
+    hash_shift = STRCACHE2_HASH_SHIFT;
+  else
+    {
+      assert (size <= (~0U / 2 + 1));
+      for (hash_shift = 8; (1U << hash_shift) < size; hash_shift++)
+        /* nothing */;
+    }
+
+  /* adjust the default segment size */
+  if (!def_seg_size)
+    def_seg_size = STRCACHE2_SEG_SIZE;
+  else if (def_seg_size < sizeof (struct strcache2_seg) * 10)
+    def_seg_size = sizeof (struct strcache2_seg) * 10;
+  else if ((def_seg_size & 0xfff) < 0xf00)
+    def_seg_size = ((def_seg_size + 0xfff) & ~0xfffU);
+
+
+  /* init the structure. */
+  cache->case_insensitive = case_insensitive;
+#ifdef STRCACHE2_USE_MASK
+  cache->hash_mask = (1U << hash_shift) - 1U;
+#else
+  cache->hash_div = strcache2_find_prime(hash_shift);
+#endif
+  cache->count = 0;
+  cache->collision_count = 0;
+  cache->lookup_count = 0;
+  cache->collision_1st_count = 0;
+  cache->collision_2nd_count = 0;
+  cache->collision_3rd_count = 0;
+  cache->rehash_count = (1U << hash_shift) / 4 * 3;   /* rehash at 75% */
+  cache->init_size = 1U << hash_shift;
+  cache->hash_size = 1U << hash_shift;
+  cache->def_seg_size = def_seg_size;
+  cache->lock = NULL;
+  cache->name = name;
+
+  /* allocate the hash table and first segment. */
+  cache->hash_tab = (struct strcache2_entry **)
+    xmalloc (cache->init_size * sizeof (struct strcache2_entry *));
+  memset (cache->hash_tab, '\0', cache->init_size * sizeof (struct strcache2_entry *));
+  strcache2_new_seg (cache, 0);
+
+  /* link it */
+  cache->next = strcache_head;
+  strcache_head = cache;
+}
+
+
+/* Terminates a string cache, freeing all memory and other
+   associated resources. */
+void
+strcache2_term (struct strcache2 *cache)
+{
+  /* unlink it */
+  if (strcache_head == cache)
+    strcache_head = cache->next;
+  else
+    {
+      struct strcache2 *prev = strcache_head;
+      while (prev->next != cache)
+        prev = prev->next;
+      assert (prev);
+      prev->next = cache->next;
+    }
+
+  /* free the memory segments */
+  do
+    {
+      void *free_it = cache->seg_head;
+      cache->seg_head = cache->seg_head->next;
+      free (free_it);
+    }
+  while (cache->seg_head);
+
+  /* free the hash and clear the structure. */
+  free (cache->hash_tab);
+  memset (cache, '\0', sizeof (struct strcache2));
+}
+
+/* Print statistics a string cache. */
+void
+strcache2_print_stats (struct strcache2 *cache, const char *prefix)
+{
+  unsigned int  seg_count = 0;
+  unsigned long seg_total_bytes = 0;
+  unsigned long seg_avg_bytes;
+  unsigned long seg_avail_bytes = 0;
+  unsigned long seg_max_bytes = 0;
+  struct strcache2_seg *seg;
+  unsigned int  str_count = 0;
+  unsigned long str_total_len = 0;
+  unsigned int  str_avg_len;
+  unsigned int  str_min_len = ~0U;
+  unsigned int  str_max_len = 0;
+  unsigned int  idx;
+  unsigned int  rehashes;
+  unsigned int  chain_depths[32];
+
+  printf (_("\n%s strcache2: %s\n"), prefix, cache->name);
+
+  /* Segment statistics. */
+  for (seg = cache->seg_head; seg; seg = seg->next)
+    {
+      seg_count++;
+      seg_total_bytes += seg->size;
+      seg_avail_bytes += seg->avail;
+      if (seg->size > seg_max_bytes)
+        seg_max_bytes = seg->size;
+    }
+  seg_avg_bytes = seg_total_bytes / seg_count;
+  printf (_("%s  %u segments: total = %lu / max = %lu / avg = %lu / def = %u  avail = %lu\n"),
+          prefix, seg_count, seg_total_bytes, seg_max_bytes, seg_avg_bytes,
+          cache->def_seg_size, seg_avail_bytes);
+
+  /* String statistics. */
+  memset (chain_depths, '\0', sizeof (chain_depths));
+  idx = cache->hash_size;
+  while (idx-- > 0)
+    {
+      struct strcache2_entry const *entry = cache->hash_tab[idx];
+      unsigned int depth = 0;
+      for (; entry != 0; entry = entry->next, depth++)
+        {
+          unsigned int length = entry->length;
+          str_total_len += length;
+          if (length > str_max_len)
+            str_max_len = length;
+          if (length < str_min_len)
+            str_min_len = length;
+          str_count++;
+        }
+      chain_depths[depth >= 32 ? 31 : depth]++;
+    }
+  str_avg_len = cache->count ? str_total_len / cache->count : 0;
+  printf (_("%s  %u strings: total len = %lu / max = %u / avg = %u / min = %u\n"),
+          prefix, cache->count, str_total_len, str_max_len, str_avg_len, str_min_len);
+  if (str_count != cache->count)
+    printf (_("%s  string count mismatch! cache->count=%u, actual count is %u\n"), prefix,
+            cache->count, str_count);
+
+  /* Hash statistics. */
+  idx = cache->init_size;
+  rehashes = 0;
+  while (idx < cache->hash_size)
+    {
+      idx *= 2;
+      rehashes++;
+    }
+
+#ifdef STRCACHE2_USE_MASK
+  printf (_("%s  hash size = %u  mask = %#x  rehashed %u times"),
+          prefix, cache->hash_size, cache->hash_mask, rehashes);
+#else
+  printf (_("%s  hash size = %u  div = %#x  rehashed %u times"),
+          prefix, cache->hash_size, cache->hash_div, rehashes);
+#endif
+  if (cache->lookup_count)
+    printf (_("%s  lookups = %lu\n"
+              "%s  hash collisions 1st = %lu (%u%%)  2nd = %lu (%u%%)  3rd = %lu (%u%%)"),
+            prefix, cache->lookup_count,
+            prefix,
+            cache->collision_1st_count,  (unsigned int)((100.0 * cache->collision_1st_count) / cache->lookup_count),
+            cache->collision_2nd_count,  (unsigned int)((100.0 * cache->collision_2nd_count) / cache->lookup_count),
+            cache->collision_3rd_count,  (unsigned int)((100.0 * cache->collision_3rd_count) / cache->lookup_count));
+  printf (_("\n%s  hash insert collisions = %u (%u%%)\n"),
+          prefix, cache->collision_count,(unsigned int)((100.0 * cache->collision_count) / cache->count));
+  printf (_("%s  %5u (%u%%) empty hash table slots\n"),
+          prefix, chain_depths[0],       (unsigned int)((100.0 * chain_depths[0])  / cache->hash_size));
+  printf (_("%s  %5u (%u%%) occupied hash table slots\n"),
+          prefix, chain_depths[1],       (unsigned int)((100.0 * chain_depths[1])  / cache->hash_size));
+  for (idx = 2; idx < 32; idx++)
+    {
+      unsigned strs_at_this_depth = chain_depths[idx];
+      unsigned i;
+      for (i = idx + 1; i < 32; i++)
+        strs_at_this_depth += chain_depths[i];
+      if (strs_at_this_depth)
+        printf (_("%s  %5u (%2u%%) with %u string%s chained on; %5u (%2u%%) strings at depth %u.\n"),
+                prefix, chain_depths[idx], (unsigned int)((100.0 * chain_depths[idx]) / (cache->count - cache->collision_count)),
+                idx - 1, idx == 2 ? " " : "s",
+                strs_at_this_depth,        (unsigned int)((100.0 * strs_at_this_depth) / cache->count), idx - 1);
+    }
+}
+
+/* Print statistics for all string caches. */
+void
+strcache2_print_stats_all (const char *prefix)
+{
+  struct strcache2 *cur;
+  for (cur = strcache_head; cur; cur = cur->next)
+    strcache2_print_stats (cur, prefix);
+}
+
diff --git a/src/kmk/strcache2.h b/src/kmk/strcache2.h
new file mode 100644
index 0000000..8ef8650
--- /dev/null
+++ b/src/kmk/strcache2.h
@@ -0,0 +1,182 @@
+/* $Id: strcache2.h 2413 2010-09-11 17:43:04Z bird $ */
+/** @file
+ * strcache - New string cache.
+ */
+
+/*
+ * Copyright (c) 2006-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef ___strcache2_h
+#define ___strcache2_h
+
+#ifndef CHAR_BIT
+# error "include after make.h!"
+#endif
+
+#define STRCACHE2_USE_MASK 1
+
+/* string cache memory segment. */
+struct strcache2_seg
+{
+    struct strcache2_seg *next;         /* The next cache segment. */
+    char *start;                        /* The first byte in the segment. */
+    size_t size;                        /* The size of the segment. */
+    size_t avail;                       /* The number of available bytes. */
+    char *cursor;                       /* Allocation cursor. */
+};
+
+/* string cache hash table entry. */
+struct strcache2_entry
+{
+    struct strcache2_entry *next;       /* Collision chain. */
+    void *user;
+    unsigned int hash;
+    unsigned int length;
+};
+
+/* The entry alignment, cacheline size if it's known & sensible.
+
+   On x86/AMD64 we assume a 64-byte cacheline size.  As it is difficult to
+   guess other right now, these default 16 chars as that shouldn't cause
+   much trouble, even if it not the most optimial value.  Override, or modify
+   for other platforms.  */
+#ifndef STRCACHE2_ENTRY_ALIGN_SHIFT
+# if defined (__i386__) || defined(__x86_64__)
+#  define STRCACHE2_ENTRY_ALIGN_SHIFT    6
+# else
+#  define STRCACHE2_ENTRY_ALIGN_SHIFT    4
+# endif
+#endif
+#define STRCACHE2_ENTRY_ALIGNMENT       (1 << STRCACHE2_ENTRY_ALIGN_SHIFT)
+
+
+struct strcache2
+{
+    struct strcache2_entry **hash_tab;  /* The hash table. */
+    int case_insensitive;               /* case insensitive or not. */
+#ifdef STRCACHE2_USE_MASK
+    unsigned int hash_mask;             /* The AND mask matching hash_size.*/
+#else
+    unsigned int hash_div;              /* The number (prime) to mod by. */
+#endif
+    unsigned long lookup_count;         /* The number of lookups. */
+    unsigned long collision_1st_count;  /* The number of 1st level collisions. */
+    unsigned long collision_2nd_count;  /* The number of 2nd level collisions. */
+    unsigned long collision_3rd_count;  /* The number of 3rd level collisions. */
+    unsigned int count;                 /* Number entries in the cache. */
+    unsigned int collision_count;       /* Number of entries in chains. */
+    unsigned int rehash_count;          /* When to rehash the table. */
+    unsigned int init_size;             /* The initial hash table size. */
+    unsigned int hash_size;             /* The hash table size. */
+    unsigned int def_seg_size;          /* The default segment size. */
+    void *lock;                         /* The lock handle. */
+    struct strcache2_seg *seg_head;     /* The memory segment list. */
+    struct strcache2 *next;             /* The next string cache. */
+    const char *name;                   /* Cache name. */
+};
+
+
+void strcache2_init (struct strcache2 *cache, const char *name, unsigned int size,
+                     unsigned int def_seg_size, int case_insensitive, int thread_safe);
+void strcache2_term (struct strcache2 *cache);
+void strcache2_print_stats (struct strcache2 *cache, const char *prefix);
+void strcache2_print_stats_all (const char *prefix);
+const char *strcache2_add (struct strcache2 *cache, const char *str, unsigned int length);
+const char *strcache2_iadd (struct strcache2 *cache, const char *str, unsigned int length);
+const char *strcache2_add_hashed (struct strcache2 *cache, const char *str,
+                                  unsigned int length, unsigned int hash);
+const char *strcache2_iadd_hashed (struct strcache2 *cache, const char *str,
+                                   unsigned int length, unsigned int hash);
+const char *strcache2_lookup (struct strcache2 *cache, const char *str, unsigned int length);
+const char *strcache2_ilookup (struct strcache2 *cache, const char *str, unsigned int length);
+#ifdef HAVE_CASE_INSENSITIVE_FS
+# define strcache2_add_file         strcache2_iadd
+# define strcache2_add_hashed_file  strcache2_iadd_hashed
+# define strcache2_lookup_file      strcache2_ilookup
+#else
+# define strcache2_add_file         strcache2_add
+# define strcache2_add_hashed_file  strcache2_add_hashed
+# define strcache2_lookup_file      strcache2_lookup
+#endif
+int strcache2_is_cached (struct strcache2 *cache, const char *str);
+int strcache2_verify_entry (struct strcache2 *cache, const char *str);
+unsigned int strcache2_get_hash2_fallback (struct strcache2 *cache, const char *str);
+unsigned int strcache2_hash_str (const char *str, unsigned int length, unsigned int *hash2p);
+unsigned int strcache2_hash_istr (const char *str, unsigned int length, unsigned int *hash2p);
+
+/* Get the hash table entry pointer. */
+MY_INLINE struct strcache2_entry const *
+strcache2_get_entry (struct strcache2 *cache, const char *str)
+{
+#ifndef NDEBUG
+  strcache2_verify_entry (cache, str);
+#endif
+  return (struct strcache2_entry const *)str - 1;
+}
+
+/* Get the string length. */
+MY_INLINE unsigned int
+strcache2_get_len (struct strcache2 *cache, const char *str)
+{
+  return strcache2_get_entry (cache, str)->length;
+}
+
+/* Get the first hash value for the string. */
+MY_INLINE unsigned int
+strcache2_get_hash (struct strcache2 *cache, const char *str)
+{
+  return strcache2_get_entry (cache, str)->hash;
+}
+
+/* Calc the pointer hash value for the string.
+
+   This takes the string address, shift out the bits that are always zero
+   due to alignment, and then returns the unsigned integer value of it.
+
+   The results from using this is generally better than for any of the
+   other hash values.  It is also sligtly faster code as it does not
+   involve any memory accesses, just a right SHIFT and an optional AND. */
+MY_INLINE unsigned int
+strcache2_calc_ptr_hash (struct strcache2 *cache, const char *str)
+{
+  (void)cache;
+  return (size_t)str >> STRCACHE2_ENTRY_ALIGN_SHIFT;
+}
+
+/* Get the user value for the string. */
+MY_INLINE void *
+strcache2_get_user_val (struct strcache2 *cache, const char *str)
+{
+  return strcache2_get_entry (cache, str)->user;
+}
+
+/* Get the user value for the string. */
+MY_INLINE void
+strcache2_set_user_val (struct strcache2 *cache, const char *str, void *value)
+{
+  struct strcache2_entry *entry = (struct strcache2_entry *)str - 1;
+#ifndef NDEBUG
+  strcache2_verify_entry (cache, str);
+#endif
+  entry->user = value;
+}
+
+#endif
+
diff --git a/src/kmk/subproc.bat b/src/kmk/subproc.bat
new file mode 100644
index 0000000..685ed9d
--- /dev/null
+++ b/src/kmk/subproc.bat
@@ -0,0 +1,24 @@
+@echo off

+rem Copyright (C) 1996-2016 Free Software Foundation, Inc.

+rem This file is part of GNU Make.

+rem

+rem GNU Make is free software; you can redistribute it and/or modify it under

+rem the terms of the GNU General Public License as published by the Free

+rem Software Foundation; either version 3 of the License, or (at your option)

+rem any later version.

+rem

+rem GNU Make is distributed in the hope that it will be useful, but WITHOUT

+rem ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

+rem FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.

+rem more details.

+rem

+rem You should have received a copy of the GNU General Public License along

+rem with this program.  If not, see <http://www.gnu.org/licenses/>.

+

+cd w32\subproc

+set MAKE=%2

+set MAKEFILE=%1

+if x%2 == x set MAKE=nmake

+%MAKE% /f %MAKEFILE%

+if ERRORLEVEL 1 exit /B

+cd ..\..

diff --git a/src/kmk/testcase-2ndtargetexp.kmk b/src/kmk/testcase-2ndtargetexp.kmk
new file mode 100644
index 0000000..1e19a8b
--- /dev/null
+++ b/src/kmk/testcase-2ndtargetexp.kmk
@@ -0,0 +1,68 @@
+# $Id: testcase-2ndtargetexp.kmk 2413 2010-09-11 17:43:04Z bird $
+## @file
+# kBuild - testcase for the 2nd target expansion feature.
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+DEPTH = ../..
+include $(PATH_KBUILD)/header.kmk
+
+#
+# Enable it.
+#
+.SECONDTARGETEXPANSION:
+
+
+#
+# This is expanded immediately.
+#
+foo1 = foo1
+$(foo1):
+	$(if $(eq $@,foo1),$(ECHO) "foo1 works",$(ECHO) "foo1 is busted @=$@"; exit 1)
+
+# Mostly for making sure the ifeq test works below.
+flush_command_recoding := 1 # see record_waiting_files() in read.c
+ifeq ($(strip $(commands foo1)),)
+$(error No commands for foo1: $(commands foo1))
+endif
+
+
+#
+# This is expanded in the 2nd round.
+#
+$$(foo2):
+	$(if $(eq $@,foo2),$(ECHO) "foo2 works",$(ECHO) "foo2 is busted @=$@"; exit 1)
+
+# Check that a $(foo2) file exists.
+flush_command_recoding := 1 # see record_waiting_files() in read.c
+# $ (info $$(foo2) commands: $(commands $$(foo2)))
+ifeq ($(strip $(commands $$(foo2))),)
+$(error No commands for $$(foo2): $(commands $$(foo2)))
+endif
+
+
+all_recursive: foo1 foo2
+	$(ECHO) "2nd target expansion passes smoke testing"
+
+# define this last
+foo2 = foo2
+
diff --git a/src/kmk/testcase-assignments.kmk b/src/kmk/testcase-assignments.kmk
new file mode 100644
index 0000000..1ef2431
--- /dev/null
+++ b/src/kmk/testcase-assignments.kmk
@@ -0,0 +1,29 @@
+# $Id: testcase-assignments.kmk 3154 2018-03-15 23:35:33Z bird $
+# Testcase for weird various assignment operators and parsing.
+
+
+
+SIMPLE1 := simple1
+ifneq ($(SIMPLE1),simple1)
+ $(error simple1 assignment no 1 failed: SIMPLE1=$(SIMPLE1))
+endif
+
+SIMPLE2 := simple2-$(SIMPLE1)
+ifneq ($(SIMPLE2),simple2-simple1)
+ $(error simple assignment no 2 failed: $(SIMPLE2))
+endif
+
+$(SIMPLE1)-3 := simple3-$(SIMPLE1)
+ifneq ($(simple1-3),simple3-simple1)
+ $(error simple assignment no 3 failed: $($(SIMPLE1)-3))
+endif
+
+$(subst 1,4,$(SIMPLE1)) := simple4
+ifneq ($(simple4),simple4)
+ $(error simple assignment no 4 failed: simple4=$(simple4)) # (Including an equal inside the error call here.)
+endif
+
+all:
+	@echo okay
+
+
diff --git a/src/kmk/testcase-if1of.kmk b/src/kmk/testcase-if1of.kmk
new file mode 100644
index 0000000..dc878ba
--- /dev/null
+++ b/src/kmk/testcase-if1of.kmk
@@ -0,0 +1,80 @@
+# $Id: testcase-if1of.kmk 2413 2010-09-11 17:43:04Z bird $
+## @file
+# kBuild - testcase for the if1of and ifn1of conditionals.
+#
+
+#
+# Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+DEPTH = ../..
+include $(PATH_KBUILD)/header.kmk
+
+# the basics.
+if1of (asdf,asdf)
+else
+ $(error busted)
+endif
+ifn1of (asdf,asdf)
+ $(error busted)
+endif
+
+# larger sets.
+if1of (1,2 3 4 5 6 7 8 9 0)
+ $(error busted)
+endif
+if1of (1,12 3 4 5 6 7 8 9 0)
+ $(error busted)
+endif
+if1of (1,2 31 4 5 6 7 8 9 0)
+ $(error busted)
+endif
+ifn1of (1,1 2 3 4 5 6 7 8 9 0)
+ $(error busted)
+endif
+ifn1of (8,1 2 3 4 5 6 7 8 9 0)
+ $(error busted)
+endif
+ifn1of (asdf,asdf)
+ $(error busted)
+endif
+ifn1of (asdf,asdf asdf)
+ $(error busted)
+endif
+
+# any in set 1 match any in set 2.
+if1of (1 3 5 7 9, 2 4 6 8)
+ $(error busted)
+endif
+ifn1of (1 2 3 4 5, 2 4 6 8)
+ $(error busted)
+endif
+
+# real life.
+ifn1of (win linux, linux)
+ $(error busted)
+endif
+ifn1of (win.x86, win.amd64 linux.x86 darwin.x86 win.x86 os2.x86)
+ $(error busted)
+endif
+
+
+all_recursive:
+	$(ECHO) "if1of and ifn1of work fine"
+
diff --git a/src/kmk/testcase-ifeq-escape.kmk b/src/kmk/testcase-ifeq-escape.kmk
new file mode 100644
index 0000000..500b812
--- /dev/null
+++ b/src/kmk/testcase-ifeq-escape.kmk
@@ -0,0 +1,18 @@
+# $Id: testcase-ifeq-escape.kmk 3154 2018-03-15 23:35:33Z bird $
+# Testcase for weird 'ifeq' and funny escapes.
+
+ifeq "1        	 \
+ \
+ \
+   \
+ \
+ " \
+"1 "
+$(info info: ifeq -> equal)
+else
+$(error info: ifeq -> not equal - wrong)
+endif
+
+all:
+	@echo okay
+
diff --git a/src/kmk/testcase-includedep-esc-sub.kmk b/src/kmk/testcase-includedep-esc-sub.kmk
new file mode 100644
index 0000000..fe132d5
--- /dev/null
+++ b/src/kmk/testcase-includedep-esc-sub.kmk
@@ -0,0 +1,113 @@
+# $Id: testcase-includedep-esc-sub.kmk 3318 2020-04-01 07:05:32Z bird $
+## @file
+# kBuild - testcase for the includdep directive with filename escaping, helper
+#          file that gets included.
+#
+
+#
+# Copyright (c) 2007-2020 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+testcase-includedep-esc-sub.kmk=included
+
+# spaces
+/phoney/file-with-two-spaces\ \ .c: \
+		/phoney/header-file-with-two-spaces\ \ .h
+
+
+#
+# From example-spaces.kmk
+#
+/phoney-dep-ignore:
+
+phoney\ space\ \ 1: /phoney-dep\ space\ \ 1
+
+phoney\ colon\:\ 2: /phoney-dep\ colon\:\ 2 \
+
+phoney\ hash\#\ 3 : /phoney-dep\ hash\#\ 3 
+
+phoney\ dollar$$\ 4 : /phoney-dep\ dollar$$\ 4 \
+
+phoney\ slash-space\\\ 5: /phoney-dep\ slash-space\\\ 5
+
+phoney\ slash-hash\\\#\ 6: /phoney-dep\ slash-hash\\\#\ 6 \
+
+phoney\ slash-slash-hash\\\\\#\ 7:  /phoney-dep\ slash-slash-hash\\\\\#\ 7
+
+phoney\ equal\=\ 8: /phoney-dep\ equal\=\ 8
+
+phoney\ semI\;\ 9: /phoney-dep\ semi\;\ 9
+
+# Note! The percent is only escaped on the target side!
+phoney\ percent\%\ 10:	/phoney-dep\ percent%\ 10 \
+
+# Note! The pipe is only escaped on the dependency list side!
+phoney\ pipe|\ 11: /phoney-dep\ pipe\|\ 11    
+
+phoney\ plus+\ 12: \
+	/phoney-dep\ plus+\ 12
+
+phoney\ trailing-slash13\\: /phoney-dep\ trailing-slash13\ \
+
+phoney\ trailing-slash13b\\: /phoney-dep\ trailing-slash13b\ \
+	\
+	\
+	\
+
+phoney\ trailing-slash14\\: \
+	/phoney-dep\ trailing-slash14\\ \
+	/phoney-dep-ignore
+
+phoney\ 15-trailing-space\ : /phoney-dep\ 15-trailing-space\  /phoney-dep-ignore
+
+# Note! No stripping spaces! Trailing space here that gets stripped instead of escaped.
+phoney\ 16-no-trailing-space\\: /phoney-dep\ 16-no-trailing-space\ 
+
+phoney\ 17-3x-escaped-newlines\ becomes-single-space: /phoney-dep\ 17-3x-escaped-newlines\ \
+\
+\
+	becomes-single-space
+
+# Note! Must have a trailing space or comment.
+phoney\ 18-3x-escaped-trailing-spaces-no-newline\ \ \\: \
+	/phoney-dep\ 18-3x-escaped-trailing-spaces-no-newline\ \ \ 
+
+phoney\ 19-target-trailing-space-with-padding\   : /phoney-dep\ 19-target-trailing-space-with-padding\  /phoney-dep-ignore
+
+phoney\ 20-target-trailing-space-with-newline-padding\   \
+\
+: /phoney-dep\ 20-target-trailing-space-with-newline-padding\  /phoney-dep-ignore
+
+phoney\ 21-target-trailing-space-with-newline-padding-and-tail\ \
+\
+ \
+		\
+my-tail-21: /phoney-dep\ 21-target-trailing-space-with-newline-padding-and-tail\ \
+\
+\
+my-tail-21
+
+
+all-trailing-slashes1: /phoney-dep\ trailing-slash13\ \
+
+all-trailing-slashes2: /phoney-dep\ trailing-slash13b\ \
+	\
+	\
+	\
+
diff --git a/src/kmk/testcase-includedep-esc.kmk b/src/kmk/testcase-includedep-esc.kmk
new file mode 100644
index 0000000..0f08b79
--- /dev/null
+++ b/src/kmk/testcase-includedep-esc.kmk
@@ -0,0 +1,133 @@
+# $Id: testcase-includedep-esc.kmk 3318 2020-04-01 07:05:32Z bird $
+## @file
+# kBuild - testcase for the includedep directive with filename escaping.
+#
+
+#
+# Copyright (c) 2008-2020 knut st. osmundsen <bird-kBuild-spamxx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+all_recursive:
+	$(ECHO) "includedep works fine"
+
+# Include before header to avoid secondary expansion in the noraml 
+# include scenario.
+ifndef USE_NORMAL_INCLUDE
+includedep testcase-includedep-esc-sub.kmk
+else
+include testcase-includedep-esc-sub.kmk
+endif
+
+# We need the header for variables for special characters.
+DEPTH = ../..
+include $(PATH_KBUILD)/header.kmk
+
+
+ifneq ("$(deps-all /phoney/file-with-two-spaces  .c)","/phoney/header-file-with-two-spaces  .h")
+$(error /phoney/file-with-two-spaces  .c: $(deps-all /phoney/file-with-two-spaces  .c))
+endif
+
+ifneq ("$(deps-all phoney space  1)","/phoney-dep space  1")
+$(error phoney space  1: $(deps-all phoney space  1))
+endif
+
+ifneq ("$(deps-all phoney colon: 2)","/phoney-dep colon: 2")
+$(error phoney colon: 2: $(deps-all phoney colon: 2))
+endif
+
+ifneq ("$(deps-all phoney hash$(HASH) 3)","/phoney-dep hash$(HASH) 3")
+$(error phoney hash$(HASH) 3: $(deps-all phoney hash$(HASH) 3))
+endif
+
+ifeq ("$(deps-all phoney dollar$$ 4)","$/phoney-dep dollar$(DOLLAR) 4")
+$(error phoney dollar$$ 4: $(deps-all phoney dollar$$ 4))
+endif
+
+ifneq ("$(deps-all phoney slash-space\ 5)","/phoney-dep slash-space\ 5")
+$(error phoney slash-space\ 5: $(deps-all phoney slash-space\ 5))
+endif
+
+ifneq ("$(deps-all phoney slash-hash\$(HASH) 6)","/phoney-dep slash-hash\$(HASH) 6")
+$(error phoney slash-hash\$(HASH) 6: $(deps-all phoney slash-hash\$(HASH) 6))
+endif
+
+ifneq ("$(deps-all phoney slash-slash-hash\\$(HASH) 7)","/phoney-dep slash-slash-hash\\$(HASH) 7")
+$(error phoney slash-slash-hash\\$(HASH) 7: $(deps-all phoney slash-slash-hash\\$(HASH) 7))
+endif
+
+ifneq ("$(deps-all phoney equal= 8)","/phoney-dep equal= 8")
+$(error phoney equal= 8: $(deps-all phoney equal= 8))
+endif
+
+ifneq ("$(deps-all phoney semI; 9)","/phoney-dep semi; 9")
+$(error phoney semI; 9: $(deps-all phoney semI; 9))
+endif
+
+ifneq ("$(deps-all phoney percent% 10)","/phoney-dep percent% 10")
+$(error phoney percent% 10: $(deps-all phoney percent% 10))
+endif
+
+ifneq ("$(deps-all phoney pipe| 11)","/phoney-dep pipe| 11")
+$(error phoney pipe| 11: $(deps-all phoney pipe| 11))
+endif
+
+ifneq ("$(deps-all phoney plus+ 12)","/phoney-dep plus+ 12")
+$(error phoney plus+ 12: $(deps-all phoney plus+ 12))
+endif
+
+ifneq ("$(deps-all phoney trailing-slash13\)","/phoney-dep trailing-slash13\")
+$(error phoney trailing-slash13\: $(deps-all phoney trailing-slash13\))
+endif
+
+ifneq ("$(deps-all phoney trailing-slash13b\)","/phoney-dep trailing-slash13b\")
+$(error phoney trailing-slash13b\: $(deps-all phoney trailing-slash13b\))
+endif
+
+ifneq ("$(deps-all phoney trailing-slash14\)","/phoney-dep trailing-slash14\ /phoney-dep-ignore")
+$(error phoney trailing-slash14\: $(deps-all phoney trailing-slash14\))
+endif
+
+ifneq ("$(deps-all phoney 15-trailing-space )","/phoney-dep 15-trailing-space  /phoney-dep-ignore")
+$(error phoney 15-trailing-space : $(deps-all phoney 15-trailing-space ))
+endif
+
+ifneq ("$(deps-all phoney 16-no-trailing-space\)","/phoney-dep 16-no-trailing-space\")
+$(error phoney 16-no-trailing-space\: $(deps-all phoney 16-no-trailing-space\))
+endif
+
+ifneq ("$(deps-all phoney 17-3x-escaped-newlines becomes-single-space)","/phoney-dep 17-3x-escaped-newlines becomes-single-space")
+$(error phoney 17-3x-escaped-newlines becomes-single-space: $(deps-all phoney 17-3x-escaped-newlines becomes-single-space))
+endif
+
+ifneq ("$(deps-all phoney 18-3x-escaped-trailing-spaces-no-newline  \)","/phoney-dep 18-3x-escaped-trailing-spaces-no-newline  \")
+$(error phoney 18-3x-escaped-trailing-spaces-no-newline  \: $(deps-all phoney 18-3x-escaped-trailing-spaces-no-newline  \))
+endif
+
+ifneq ("$(deps-all phoney 19-target-trailing-space-with-padding )","/phoney-dep 19-target-trailing-space-with-padding  /phoney-dep-ignore")
+$(error phoney 19-target-trailing-space-with-padding : $(deps-all phoney 19-target-trailing-space-with-padding ))
+endif
+
+ifneq ("$(deps-all phoney 20-target-trailing-space-with-newline-padding )","/phoney-dep 20-target-trailing-space-with-newline-padding  /phoney-dep-ignore")
+$(error phoney 20-target-trailing-space-with-newline-padding : $(deps-all phoney 20-target-trailing-space-with-newline-padding ))
+endif
+
+ifneq ("$(deps-all phoney 21-target-trailing-space-with-newline-padding-and-tail my-tail-21)","/phoney-dep 21-target-trailing-space-with-newline-padding-and-tail my-tail-21")
+$(error 21-target-trailing-space-with-newline-padding-and-tail my-tail-21: $(deps-all 21-target-trailing-space-with-newline-padding-and-tail my-tail-21))
+endif
+
diff --git a/src/kmk/testcase-includedep-sub.kmk b/src/kmk/testcase-includedep-sub.kmk
new file mode 100644
index 0000000..b5bf546
--- /dev/null
+++ b/src/kmk/testcase-includedep-sub.kmk
@@ -0,0 +1,28 @@
+# $Id: testcase-includedep-sub.kmk 2413 2010-09-11 17:43:04Z bird $
+## @file
+# kBuild - testcase for the includdep directive, helper file
+#          that gets included all the time.
+#
+
+#
+# Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+testcase-includedep-sub.kmk=included
+
diff --git a/src/kmk/testcase-includedep.kmk b/src/kmk/testcase-includedep.kmk
new file mode 100644
index 0000000..685f527
--- /dev/null
+++ b/src/kmk/testcase-includedep.kmk
@@ -0,0 +1,90 @@
+# $Id: testcase-includedep.kmk 2413 2010-09-11 17:43:04Z bird $
+## @file
+# kBuild - testcase for the includedep directive.
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+DEPTH = ../..
+include $(PATH_KBUILD)/header.kmk
+
+ifdef testcase-includedep-sub.kmk
+$(error testcase-includedep-sub.kmk is defined at the start of the testcase.)
+endif
+
+
+foo = testcase-includedep-sub
+includedep $(foo).kmk
+ifneq ($(testcase-includedep-sub.kmk),included)
+$(error The first test failed.)
+endif
+testcase-includedep-sub.kmk :=
+ifdef testcase-includedep-sub.kmk
+$(error testcase-includedep-sub.kmk is persistent and does not want to be undefed.)
+endif
+
+
+foo = includedep
+includedep testcase-$(foo)-sub.kmk
+ifneq ($(testcase-includedep-sub.kmk),included)
+$(error The second test failed.)
+endif
+testcase-includedep-sub.kmk :=
+ifdef testcase-includedep-sub.kmk
+$(error testcase-includedep-sub.kmk is persistent and does not want to be undefed.)
+endif
+
+
+foo = kmk
+includedep testcase-includedep-sub.$(foo)
+ifneq ($(testcase-includedep-sub.kmk),included)
+$(error The thrid test failed.)
+endif
+testcase-includedep-sub.kmk :=
+ifdef testcase-includedep-sub.kmk
+$(error testcase-includedep-sub.kmk is persistent and does not want to be undefed.)
+endif
+
+
+includedep testcase-includedep-sub.kmk
+ifneq ($(testcase-includedep-sub.kmk),included)
+$(error The forth test failed.)
+endif
+testcase-includedep-sub.kmk :=
+ifdef testcase-includedep-sub.kmk
+$(error testcase-includedep-sub.kmk is persistent and does not want to be undefed.)
+endif
+
+
+foo = asdf
+includedep testcase-$(foo)-sub.kmk
+ifeq ($(testcase-includedep-sub.kmk),included)
+$(error The fifth test failed.)
+endif
+testcase-includedep-sub.kmk :=
+ifdef testcase-includedep-sub.kmk
+$(error testcase-includedep-sub.kmk is persistent and does not want to be undefed.)
+endif
+
+
+all_recursive:
+	$(ECHO) "includedep works fine"
+
diff --git a/src/kmk/testcase-kBuild-define.kmk b/src/kmk/testcase-kBuild-define.kmk
new file mode 100644
index 0000000..1074e72
--- /dev/null
+++ b/src/kmk/testcase-kBuild-define.kmk
@@ -0,0 +1,141 @@
+# $Id: testcase-kBuild-define.kmk 2720 2014-01-01 22:59:50Z bird $
+## @file
+# kBuild - testcase for the kBuild-define-* directives.
+#
+
+#
+# Copyright (c) 2011-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+#DEPTH = ../..
+#include $(PATH_KBUILD)/header.kmk
+
+##
+# Test if $($1) == $2 and raises an error if it isn't.
+#
+# @param   1   Something to apply '$' to.
+# @param   2   The expected value.
+TEST_EQ = $(if-expr "$($1)" == "$2",,$(error $1 is '$($1)' not '$2'))
+
+if 0
+# object definition syntax:
+#      kobject <type> <name> [extends <object> [by <||>]] [object specific args...]
+#      kendobj [<type> [name]]
+kobject kb-target MyTarget
+.TOOL = GCC
+.SOURCES = file.c
+kendobj
+else
+# Target definition.
+#      kBuild-define-target <name> [extends <target> [by <||>]] [using <template>]
+#      kBuild-endef-target [name]
+kBuild-define-target MyTarget
+_TOOL = GCC
+_SOURCES = file.c
+kBuild-endef-target
+endif
+
+if 0
+# accesses an already defined object.
+# syntax:
+#      kaccess <type> <name>
+#      kendacc [<type> [name]]
+kaccess kb-target MyTarget
+.SOURCES += file2.c
+kendacc
+else
+#kBuild-access-target MyTarget
+#_SOURCES += file2.c
+#kBuild-endacc-target
+endif
+
+
+# Referencing an object variable, the object must exist.
+# syntax: [<type>@<name>].<property>
+[target@MyTarget]_SOURCES += file3.c
+$(info [target@MyTarget]_SOURCES is $([target@MyTarget]_SOURCES))
+
+
+# Test #1
+kBuild-define-target BaseTarget using DUMMY
+_SOURCES = BaseTargetSource.c
+kBuild-endef-target BaseTarget
+$(if-expr "$([target@BaseTarget]_SOURCES)" == "BaseTargetSource.c",,$(error [target@BaseTarget]_SOURCES is '$([target@BaseTarget]_SOURCES)' not 'BaseTargetSource.c'))
+$(if-expr "$(BaseTarget_SOURCES)" == "BaseTargetSource.c",,$(error BaseTarget's _SOURCES wasn't set correctly in the global space))
+
+$(if-expr "$([target@BaseTarget]_TEMPLATE)" == "DUMMY",,$(error [target@BaseTarget]_TEMPLATE is '$([target@BaseTarget]_TEMPLATE)' not 'DUMMY'))
+$(if-expr "$(BaseTarget_TEMPLATE)" == "DUMMY",,$(error BaseTarget's _TEMPLATE wasn't set correctly in the global space))
+
+# Test #2
+kBuild-define-target TargetWithLocals
+local _LOCAL_PROP = no global alias
+kBuild-endef-target
+$(if-expr "$([target@TargetWithLocals]_LOCAL_PROP)" == "no global alias",,$(error [target@TargetWithLocals]_LOCAL_PROP is '$([target@TargetWithLocals]_LOCAL_PROP)' not 'no global alias'))
+$(if-expr "$(TargetWithLocals_LOCAL_PROP)" == "",,$(error TargetWithLocals_LOCAL_PROP's local property 'LOCAL_PROP' was exposed globally.))
+
+# Test #3
+kBuild-define-target OutsideMod
+_SOURCES = file3.c
+_OTHER   = inside-value
+kBuild-endef-target
+[target@OutsideMod]_SOURCES += file4.c
+[target@OutsideMod]_SOURCES <= file2.c
+[target@OutsideMod]_OTHER   = outside-value
+$(if-expr "$([target@OutsideMod]_SOURCES)" == "file2.c file3.c file4.c",,$(error [target@OutsideMod]_SOURCES is '$([target@OutsideMod]_SOURCES)' not 'file2.c file3.c file4.c'))
+$(if-expr "$(OutsideMod_SOURCES)"          == "file2.c file3.c file4.c",,$(error OutsideMod_SOURCES is '$(OutsideMod_SOURCES)' not 'file2.c file3.c file4.c'))
+
+$(if-expr "$([target@OutsideMod]_OTHER)" == "outside-value",,$(error [target@OutsideMod]_OTHER is '$([target@OutsideMod]_OTHER)' not 'outside-value'))
+$(if-expr "$(OutsideMod_OTHER)"          == "outside-value",,$(error OutsideMod_OTHER is '$(OutsideMod_OTHER)' not 'outside-value'))
+
+# Test #4
+kBuild-define-target SpecialBase
+_SOURCES = file1.c file2.c
+_DEFS.win.x86 = XXX YYY
+_DEFS.win.amd64 = $(filter-out YYY,$([@self]_DEFS.win.x86))
+# Unnecessary use of [@self].
+[@self]_LIBS = MyLib
+kBuild-endef-target
+
+kBuild-define-target SpecialChild extending SpecialBase
+_SOURCES = file1-child.c $(filter-out file1.c,$([@super]_SOURCES))
+# Rare use of [@super].
+[@super]_SET_BY_CHILD = 42
+kBuild-endef-target
+
+$(call TEST_EQ,[target@SpecialBase]_LIBS,MyLib)
+$(call TEST_EQ,SpecialBase_LIBS,MyLib)
+
+$(call TEST_EQ,[target@SpecialBase]_SET_BY_CHILD,42)
+$(call TEST_EQ,SpecialBase_SET_BY_CHILD,42)
+$(call TEST_EQ,[target@SpecialChild]_SET_BY_CHILD,42)
+#$(call TEST_EQ,SpecialChild_SET_BY_CHILD,42) ## @todo
+
+$(call TEST_EQ,[target@SpecialBase]_DEFS.win.x86,XXX YYY)
+$(call TEST_EQ,[target@SpecialBase]_DEFS.win.amd64,XXX)
+$(call TEST_EQ,SpecialBase_DEFS.win.amd64,XXX)
+$(call TEST_EQ,[target@SpecialChild]_DEFS.win.x86,XXX YYY)
+$(call TEST_EQ,[target@SpecialChild]_DEFS.win.amd64,XXX)
+#$(call TEST_EQ,SpecialChild_DEFS.win.amd64,XXX) ## @todo
+
+$(call TEST_EQ,[target@SpecialChild]_SOURCES,file1-child.c file2.c)
+$(call TEST_EQ,SpecialChild_SOURCES,file1-child.c file2.c)
+
+all_recursive:
+	@kmk_echo "kBuild-define-xxxx works fine"
+
diff --git a/src/kmk/testcase-lazy-deps-vars.kmk b/src/kmk/testcase-lazy-deps-vars.kmk
new file mode 100644
index 0000000..75b6b9b
--- /dev/null
+++ b/src/kmk/testcase-lazy-deps-vars.kmk
@@ -0,0 +1,72 @@
+# $Id: testcase-lazy-deps-vars.kmk 2413 2010-09-11 17:43:04Z bird $
+## @file
+# kBuild - testcase for the lazy dependency lists.
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+DEPTH = ../..
+include $(PATH_KBUILD)/header.kmk
+
+ifneq ($(not 1),)
+ $(error The 'not' function is missing)
+endif
+ifneq ($(eq 1,1),1)
+ $(error The 'eq' function is missing)
+endif
+
+
+all: simple_1
+
+
+simple_1: variable.c variable.h variable.c variable.c variable.h function.c | variable.h read.c
+	@$(ECHO) "testcase-lazy-deps-vars.kmk::$@: TESTING..."
+	@$(ECHO) "pluss: $+"
+	$(if $(eq $+,variable.c variable.h variable.c variable.c variable.h function.c),,exit 1)
+	$(if $(eq $(deps-all $@,1),variable.c),,exit 1)
+	$(if $(eq $(deps-all $@,2),variable.h),,exit 2)
+	$(if $(eq $(deps-all $@,3),variable.c),,exit 3)
+	$(if $(eq $(deps-all $@,4),variable.c),,exit 4)
+	$(if $(eq $(deps-all $@,5),variable.h),,exit 5)
+	$(if $(eq $(deps-all $@,6),function.c),,exit 6)
+	$(if $(eq $(deps-all $@,7),),,exit 7)
+
+	@$(ECHO) "caret: $^"
+	$(if $(eq $^,variable.c variable.h function.c),,exit 1)
+	$(if $(eq $(deps $@,1),variable.c),,exit 1)
+	$(if $(eq $(deps $@,2),variable.h),,exit 2)
+	$(if $(eq $(deps $@,3),function.c),,exit 3)
+	$(if $(eq $(deps $@,4),),,exit 4)
+
+	@$(ECHO) "qmark: $?"
+	$(if $(eq $?,variable.c variable.h function.c),,exit 1)
+	$(if $(eq $(deps-newer $@,1),variable.c),,exit 1)
+	$(if $(eq $(deps-newer $@,2),variable.h),,exit 2)
+	$(if $(eq $(deps-newer $@,3),function.c),,exit 3)
+	$(if $(eq $(deps-newer $@,4),),,exit 4)
+
+	@$(ECHO) "  bar: $|"
+	$(if $(eq $|,read.c),,exit 1)
+	$(if $(eq $(deps-oo $@,1),read.c),,exit 1)
+	$(if $(eq $(deps-oo $@,2),),,exit 2)
+
+	@$(ECHO) "testcase-lazy-deps-vars.kmk::simple_1: SUCCESS"
+
diff --git a/src/kmk/testcase-libpath.kmk b/src/kmk/testcase-libpath.kmk
new file mode 100644
index 0000000..c5c0efc
--- /dev/null
+++ b/src/kmk/testcase-libpath.kmk
@@ -0,0 +1,20 @@
+
+all:
+	@kmk_builtin_echo ""
+	@kmk_builtin_echo "Warning: This testcase requires manual inspection and is intended for OS/2 only."
+	@kmk_builtin_echo ""
+	@kmk_builtin_echo "getting:"
+	@kmk_builtin_echo "libpath BEGINLIBPATH:  $(libpath BEGINLIBPATH)"
+	@kmk_builtin_echo "libpath LIBPATH:       $(libpath LIBPATH)"
+	@kmk_builtin_echo "libpath ENDLIBPATH:    $(libpath ENDLIBPATH)"
+	@kmk_builtin_echo "libpath LIBPATHSTRICT: $(libpath LIBPATHSTRICT)"
+	@kmk_builtin_echo "setting:"
+	@kmk_builtin_echo "libpath ENDLIBPATH,\foobar:   $(libpath ENDLIBPATH,\foobar) -> $(libpath ENDLIBPATH)"
+	@kmk_builtin_echo "libpath ENDLIBPATH,:          $(libpath ENDLIBPATH,) -> $(libpath ENDLIBPATH)"
+	@kmk_builtin_echo "libpath BEGINLIBPATH,\qwerty: $(libpath BEGINLIBPATH,\qwerty) -> $(libpath BEGINLIBPATH)"
+	@kmk_builtin_echo "libpath BEGINLIBPATH,:        $(libpath BEGINLIBPATH,) -> $(libpath BEGINLIBPATH)"
+	@kmk_builtin_echo "libpath LIBPATHSTRICT,T:      $(libpath LIBPATHSTRICT,T) -> $(libpath LIBPATHSTRICT)"
+	@kmk_builtin_echo "libpath LIBPATHSTRICT,qwerty: $(libpath LIBPATHSTRICT,qwerty) -> $(libpath LIBPATHSTRICT)"
+	@kmk_builtin_echo "libpath LIBPATHSTRICT,F:      $(libpath LIBPATHSTRICT,F) -> $(libpath LIBPATHSTRICT)"
+	@kmk_builtin_echo "libpath LIBPATHSTRICT,:       $(libpath LIBPATHSTRICT,) -> $(libpath LIBPATHSTRICT)"
+
diff --git a/src/kmk/testcase-local.kmk b/src/kmk/testcase-local.kmk
new file mode 100644
index 0000000..710f0e9
--- /dev/null
+++ b/src/kmk/testcase-local.kmk
@@ -0,0 +1,127 @@
+#
+# local variables:
+#	o The keyword will make sure the variable is defined in
+#     current variable context instead of the global one.
+#   o Local variables are readable by children but not writable,
+#     writes goes to the globle space (a sideeffect / feature).
+#   o Local variables hides global and parent variables.
+#
+
+
+# global variable.
+var_exists1 = 1
+
+
+
+##
+# A simple define that is $(eval)uated.
+define def_test1
+
+# check that the existing variable is accessible.
+ifneq ($(var_exists1),1)
+ $(error var_exists1=$(var_exists1) (def_test1/1))
+endif
+
+# Quick check with a couple of local variables.
+local var_local1 = 2
+ifneq ($(var_local1),2)
+ $(error var_local1=$(var_local1) (def_test1/2))
+endif
+local var_local2 = 3
+ifneq ($(var_local2),3)
+ $(error var_local2=$(var_local2) (def_test1/3))
+endif
+
+# var_local1 and var_local2 should remain unchanged, var_local3 shouldn't exist.
+$(evalctx $(value def_test2))
+
+ifneq ($(var_local1),2)
+ $(error var_local1=$(var_local1) (def_test1/4))
+endif
+ifneq ($(var_local2),3)
+ $(error var_local2=$(var_local2) (def_test1/5))
+endif
+ifneq ($(var_local3),)
+ $(error var_local3=$(var_local3) (def_test1/6))
+endif
+
+endef # def_test1
+
+
+
+##
+# Called by def_test1, this checks that the locals of def_test1
+# are accessible and can be hidden by another local variable
+# or updated if assigned to.
+define def_test2
+
+# check that the existing variables are accessible, including the def_test1 ones.
+ifneq ($(var_exists1),1)
+ $(error var_exists1=$(var_exists1) (def_test2/1))
+endif
+ifneq ($(var_local1),2)
+ $(error var_local1=$(var_local1) (def_test2/2))
+endif
+ifneq ($(var_local2),3)
+ $(error var_local2=$(var_local2) (def_test2/3))
+endif
+
+# Make a local var_local1 that hides the one in def_test1.
+local var_local1 = 20
+ifneq ($(var_local1),20)
+ $(error var_local1=$(var_local1) (def_test2/4))
+endif
+
+# FEATURE: Update the var_local2 variable, this should be visible in the global space and not the local.
+var_local2 = 30
+ifneq ($(var_local2),3)
+ $(error var_local2=$(var_local2) (def_test2/5))
+endif
+
+# create a new local variable that isn't accessible from def_test1.
+local var_local3 = 4
+ifneq ($(var_local3),4)
+ $(error var_local3=$(var_local3) (def_test2/6))
+endif
+
+endef # def_test2
+
+
+
+#
+# The test body
+#
+
+# None of the local variables should exist.
+ifneq ($(var_local1),)
+ $(error var_local1=$(var_local1))
+endif
+ifneq ($(var_local2),)
+ $(error var_local2=$(var_local2))
+endif
+ifneq ($(var_local3),)
+ $(error var_local3=$(var_local3))
+endif
+
+# Evaluate the function in a local context.
+$(evalctx $(value def_test1))
+
+# FEATURE: see var_local2 = 30 in def_test2.
+ifneq ($(var_local2),30)
+ $(error var_local2=$(var_local2))
+endif
+
+# None of the other local variables should exist.
+ifneq ($(var_local1),)
+ $(error var_local1=$(var_local1))
+endif
+ifneq ($(var_local3),)
+ $(error var_local3=$(var_local3))
+endif
+
+
+
+# dummy
+all:
+	echo local variables works.
+
diff --git a/src/kmk/testcase-math.kmk b/src/kmk/testcase-math.kmk
new file mode 100644
index 0000000..bd4fb7e
--- /dev/null
+++ b/src/kmk/testcase-math.kmk
@@ -0,0 +1,98 @@
+# $Id: testcase-math.kmk 2413 2010-09-11 17:43:04Z bird $
+## @file
+# kBuild - testcase for the math functions.
+#
+
+#
+# Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+DEPTH = ../..
+include $(PATH_KBUILD)/header.kmk
+
+ifneq ($(not 1),)
+ $(error The 'not' function is missing)
+endif
+ifneq ($(eq 1,1),1)
+ $(error The 'eq' function is missing)
+endif
+
+
+ASSERT_TRUE  = $(if $(not $(1)),$(error failure: '$(1)' isn't true))
+ASSERT_FALSE = $(if       $(1) ,$(error failure: '$(1)' isn't false))
+
+$(call ASSERT_TRUE, $(int-eq 0x0, 0))
+$(call ASSERT_FALSE,$(int-eq 1, 0))
+$(call ASSERT_FALSE,$(int-eq 1123123123, 9898787987))
+$(call ASSERT_TRUE, $(int-eq 1234567890, 1234567890))
+$(call ASSERT_TRUE, $(int-eq 0x1c, 28))
+$(call ASSERT_TRUE, $(int-eq 1c, 28))
+$(call ASSERT_TRUE, $(int-ne 0x123, -0x123))
+$(call ASSERT_TRUE, $(int-ne 123, -0x123))
+$(call ASSERT_FALSE,$(int-ne 0x100, 256))
+$(call ASSERT_FALSE,$(int-ne 0x0, 0))
+$(call ASSERT_FALSE,$(int-ne 0x1c, 28))
+$(call ASSERT_TRUE, $(int-le 0, 0))
+$(call ASSERT_TRUE, $(int-le -0, 0))
+$(call ASSERT_FALSE,$(int-le 5, 1))
+$(call ASSERT_FALSE,$(int-lt 5, 1))
+$(call ASSERT_FALSE,$(int-lt 5, 5))
+$(call ASSERT_TRUE, $(int-lt 9, 10))
+$(call ASSERT_TRUE, $(int-lt -9, -8))
+$(call ASSERT_TRUE, $(int-ge 0, 0))
+$(call ASSERT_TRUE, $(int-ge -0, 0))
+$(call ASSERT_TRUE, $(int-ge 1, 0))
+$(call ASSERT_TRUE, $(int-ge -55, -55))
+$(call ASSERT_TRUE, $(int-ge 512, 400))
+$(call ASSERT_TRUE, $(int-ge -18, -19))
+$(call ASSERT_FALSE,$(int-ge -19, -18))
+$(call ASSERT_FALSE,$(int-ge 15, 20))
+$(call ASSERT_FALSE,$(int-gt 15, 20))
+$(call ASSERT_FALSE,$(int-gt 15, 15))
+$(call ASSERT_TRUE, $(int-gt 20, 15))
+
+ASSERT2 = $(if $(not $(int-eq $(1),$(2))),$(error failure: '$(1)' -ne '$(2)'))
+$(call ASSERT2,$(int-add 1, 1),0x2)
+$(call ASSERT2,$(int-add 1, 1, 1, 1, 1, 1, 1),7)
+$(call ASSERT2,$(int-add 1, -1),0)
+$(call ASSERT2,$(int-sub 1, -1),2)
+$(call ASSERT2,$(int-sub 1, 5),-4)
+$(call ASSERT2,$(int-mul 0x10, 0x20),0x200)
+$(call ASSERT2,$(int-mul 0x20, 0x10),0x200)
+$(call ASSERT2,$(int-mul 4, 7),28)
+$(call ASSERT2,$(int-mul 2, 2, 2, 2, 2, 4, 1, 1, 1, 1),128)
+$(call ASSERT2,$(int-div 0x1000, 0x100),0x10)
+$(call ASSERT2,$(int-div 999, 10),99)
+$(call ASSERT2,$(int-div 4096, 4,2,2,2,2),64)
+#$(call ASSERT2,$(int-div 0x1230023213, 0),0x0)
+$(call ASSERT2,$(int-mod 19, 10),9)
+$(call ASSERT2,$(int-mod 9, 10),9)
+$(call ASSERT2,$(int-mod 30, 10),0)
+$(call ASSERT2,$(int-not 0),-1)
+$(call ASSERT2,$(int-and 1, 1),1)
+$(call ASSERT2,$(int-and 0x123123214, 0xfff),0x214)
+$(call ASSERT2,$(int-and 0x123123214, 0xf0f, 0xf),4)
+$(call ASSERT2,$(int-or 1, 1, 1, 2, 2),3)
+$(call ASSERT2,$(int-xor 1, 1, 2, 2),0)
+$(call ASSERT2,$(int-xor 1, 2, 4),7)
+
+
+all_recursive:
+	$(ECHO) The math works. 6 * 7 = $(int-mul 6,7)
+
diff --git a/src/kmk/testcase-root.kmk b/src/kmk/testcase-root.kmk
new file mode 100644
index 0000000..92de5c5
--- /dev/null
+++ b/src/kmk/testcase-root.kmk
@@ -0,0 +1,30 @@
+#
+# The $(root ...) and $(notroot ) functions.
+#
+
+
+
+x := $(root /a)
+y := $(notroot /a)
+ifneq ($x,/)
+ $(error x=$x)
+endif
+ifneq ($y,a)
+ $(error y=$y)
+endif
+
+x := $(root /a /b /)
+y := $(notroot /a /b /)
+ifneq ($x,/ / /)
+ $(error x=$x)
+endif
+ifneq ($y,a b .)
+ $(error y=$y)
+endif
+
+
+# dummy
+all:
+	echo The root and notroot functions works.
+
+
diff --git a/src/kmk/testcase-stack.kmk b/src/kmk/testcase-stack.kmk
new file mode 100644
index 0000000..e610319
--- /dev/null
+++ b/src/kmk/testcase-stack.kmk
@@ -0,0 +1,86 @@
+# $Id: testcase-stack.kmk 2413 2010-09-11 17:43:04Z bird $
+## @file
+# kBuild - testcase for the functions.
+#
+
+#
+# Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+DEPTH = ../..
+include $(PATH_KBUILD)/header.kmk
+
+ifneq ($(not 1),)
+ $(error The 'not' function is missing)
+endif
+ifneq ($(eq 1,1),1)
+ $(error The 'eq' function is missing)
+endif
+
+ASSERT1 = $(if $(not $(eq $(STACK1),$(1))),$(error failure: STACK1:='$(STACK1)' expected='$(1)'))
+$(call stack-push,STACK1,1)
+$(call ASSERT,1)
+$(call stack-push,STACK1,2)
+$(call ASSERT,1 2)
+$(call stack-push,STACK1,3)
+$(call ASSERT,1 2 3)
+$(call stack-push,STACK1,4)
+$(call ASSERT,1 2 3 4)
+$(call stack-push,STACK1,5)
+$(call ASSERT,1 2 3 4 5)
+$(call stack-popv,STACK1)
+$(call ASSERT,1 2 3 4)
+$(call stack-push,STACK1,5)
+$(call ASSERT,1 2 3 4 5)
+$(call stack-popv,STACK1)
+$(call ASSERT,1 2 3 4)
+$(call stack-popv,STACK1)
+$(call ASSERT,1 2 3)
+$(call stack-push,STACK1,4)
+$(call ASSERT,1 2 3 4)
+$(call stack-push,STACK1,5)
+$(call ASSERT,1 2 3 4 5)
+top := $(call stack-top,STACK1)
+$(if $(not $(eq $(top),5)),$(error failure STACK1:='$(STACK1)' top:='$(top)' expected='5'))
+$(call ASSERT,1 2 3 4 5)
+top := $(call stack-pop,STACK1)
+$(if $(not $(eq $(top),5)),$(error failure STACK1:='$(STACK1)' top:='$(top)' expected='5'))
+$(call ASSERT,1 2 3 4)
+top := $(call stack-pop,STACK1)
+$(if $(not $(eq $(top),4)),$(error failure STACK1:='$(STACK1)' top:='$(top)' expected='4'))
+$(call ASSERT,1 2 3)
+top := $(call stack-pop,STACK1)
+$(if $(not $(eq $(top),3)),$(error failure STACK1:='$(STACK1)' top:='$(top)' expected='3'))
+$(call ASSERT,1 2)
+top := $(call stack-pop,STACK1)
+$(if $(not $(eq $(top),2)),$(error failure STACK1:='$(STACK1)' top:='$(top)' expected='2'))
+$(call ASSERT,1)
+top := $(call stack-top,STACK1)
+$(if $(not $(eq $(top),1)),$(error failure STACK1:='$(STACK1)' top:='$(top)' expected='1'))
+$(call ASSERT,1)
+top := $(call stack-pop,STACK1)
+$(if $(not $(eq $(top),1)),$(error failure STACK1:='$(STACK1)' top:='$(top)' expected='1'))
+$(call ASSERT,)
+top := $(call stack-pop,STACK1)
+$(if $(not $(eq $(top),)),$(error failure STACK1:='$(STACK1)' top:='$(top)' expected=''))
+$(call ASSERT,)
+
+all_recursive:
+	$(ECHO) The stack works.$(STACK1)
+
diff --git a/src/kmk/testcase-which.kmk b/src/kmk/testcase-which.kmk
new file mode 100644
index 0000000..9ff82c7
--- /dev/null
+++ b/src/kmk/testcase-which.kmk
@@ -0,0 +1,5 @@
+
+all:
+	@echo which kmk: $(which kmk)
+	@echo which kmk: $(which kmk kmk kmk )
+
diff --git a/src/kmk/testcase-xargs.kmk b/src/kmk/testcase-xargs.kmk
new file mode 100644
index 0000000..ee6b5a8
--- /dev/null
+++ b/src/kmk/testcase-xargs.kmk
@@ -0,0 +1,59 @@
+# $Id: testcase-xargs.kmk 2413 2010-09-11 17:43:04Z bird $
+## @file
+# kBuild - testcase for the xargs function.
+#          Requires manual inspection of the output.
+#
+
+#
+# Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+DEPTH = ../..
+include $(PATH_KBUILD)/header.kmk
+
+ifneq ($(not 1),)
+ $(error The 'not' function is missing)
+endif
+ifneq ($(eq 1,1),1)
+ $(error The 'eq' function is missing)
+endif
+
+
+ASSERT_TRUE  = $(if $(not $(1)),$(error failure: '$(1)' isn't true))
+ASSERT_FALSE = $(if       $(1) ,$(error failure: '$(1)' isn't false))
+
+# 94 bytes
+ONEARG = abcdefghijklmnopqrstuvwxyz_abcdefghijklmnopqrstuvwxyz_abcdefghijklmnopqrstuvwxyz_xxxxxxxxxxxx
+ITERATIONS := 0 1 2 3 4 5 6 7 8 9
+ITERATIONS := $(foreach i, 0 1 2 3 4 5 6 7 8 9,$(addprefix $(i),$(ITERATIONS)))
+ITERATIONS := $(foreach i, 0 1 2 3 4 5 6 7 8 9,$(addprefix $(i),$(ITERATIONS)))
+ITERATIONS := $(foreach i, 0 1 2 3 4 5 6 7 8 9,$(addprefix $(i),$(ITERATIONS)))
+ITERATIONS := $(foreach i, 0 1 2 3 4 5 6 7 8 9,$(addprefix $(i),$(ITERATIONS)))
+
+# add a 5 bytes sequence number and a space, then duplicate it 10000 times:
+#	100 bytes * 10000 = 1,000,000 bytes.
+REALLY_LONG := $(foreach i,$(ITERATIONS),$(i)$(ONEARG))
+
+
+#$(call ASSERT_TRUE, $(xargs $(ECHO) 1:, $(ECHO) 2:, $(ECHO) 3:, asdf asdf asdf asdf asdf asdf asdf adf asdf asdf))
+
+all_recursive:
+	$(xargs @$(ECHO_EXT) 1:, @$(ECHO_EXT) 2:, @$(ECHO_EXT) 3:, $(REALLY_LONG))
+	$(ECHO) done
+
diff --git a/src/kmk/testcase/testcase-export.kmk b/src/kmk/testcase/testcase-export.kmk
new file mode 100644
index 0000000..5d0c4b4
--- /dev/null
+++ b/src/kmk/testcase/testcase-export.kmk
@@ -0,0 +1,48 @@
+
+
+var0 = value0
+var1 = value1
+var2 = value2
+var3 = value3
+var4 = value4
+var5 = value5
+var6 = value6
+var7 = value7
+var8 = value8
+var9 = value9
+
+varname1 = var1
+varname2 = var2
+varname3 = var3
+varname4 = var4
+varname5 = var5
+varname5 = var5
+varname6 = var6
+varname7 = var7
+varname8 = var8
+varname9 = var9
+
+export var0 var8 $(varname1) $(subst foo,var,   foo2   )
+export $(foreach x, 3 4 \
+,$(subst \
+odd(, \
+   parenthesis parsing behaviour), dont-mind-this-type{ except if you put a ${dollar} in front of it, \
+$(varname$(x)) \
+)\
+)
+
+export ${foreach x, 5 \
+,${subst \
+odd{, \
+   parenthesis parsing behaviour}, dont-mind-this-type( \
+   except if you put a $(dollar) in front of it; two dollars $$(does do the trick though, \
+${varname$x}} \
+}\
+}
+
+export $ ${varname6}
+export $(varname7$)
+
+all:
+	kmk_ash -c "export | kmk_sed '/var/!d'
+
diff --git a/src/kmk/tests/.gitignore b/src/kmk/tests/.gitignore
new file mode 100644
index 0000000..a30a689
--- /dev/null
+++ b/src/kmk/tests/.gitignore
@@ -0,0 +1,2 @@
+config-flags.pm
+work
diff --git a/src/kmk/tests/COPYING b/src/kmk/tests/COPYING
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/src/kmk/tests/COPYING
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
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+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
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+Additional permissions that are applicable to the entire Program shall
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+  9. Acceptance Not Required for Having Copies.
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+  10. Automatic Licensing of Downstream Recipients.
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+  A "contributor" is a copyright holder who authorizes use under this
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+  A patent license is "discriminatory" if it does not include within
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+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
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+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
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+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
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+
+  14. Revised Versions of this License.
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+  The Free Software Foundation may publish revised and/or new versions of
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+  If the Program specifies that a proxy can decide which future
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+  Later license versions may give you additional or different
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+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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+  16. Limitation of Liability.
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+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
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+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
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+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
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+    This program is free software: you can redistribute it and/or modify
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+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
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+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
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+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
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+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/src/kmk/tests/ChangeLog.1 b/src/kmk/tests/ChangeLog.1
new file mode 100644
index 0000000..684af03
--- /dev/null
+++ b/src/kmk/tests/ChangeLog.1
@@ -0,0 +1,1429 @@
+2013-10-09  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/patspecific_vars: Typo fixes.
+
+2013-10-05  Paul Smith  <psmith@gnu.org>
+
+	* test_driver.pl (run_all_tests): Rewrite to be more clear.
+	* scripts/features/jobserver: Avoid using $ENV{HOME} as it doesn't
+	exist everywhere.
+	* scripts/features/default_names: End with 1;
+
+	* scripts/features/loadapi: Use new calling signatures.  Verify
+	the NOEXPAND flag works.  Test with all valid function name
+	characters.
+
+2013-09-29  Paul Smith  <psmith@gnu.org>
+
+	* scripts/variables/SHELL: Solaris /bin/sh can't handle options in
+	multiple words; skip that test.
+	* scripts/targets/ONESHELL: Ditto.
+
+	* scripts/variables/GNUMAKEFLAGS: Verify that GNUMAKEFLAGS is
+	cleared and options are not duplicated.
+
+2013-09-23  Paul Smith  <psmith@gnu.org>
+
+	* scripts/options/print-directory: Rename dash-w to
+	print-directory to avoid conflicts with dash-W on case-insensitive
+	filesystems.
+
+2013-09-22  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/se_implicit: Verify that order-only tokens
+	inside second expansion are parsed correctly.
+	Test for Savannah bug #31155.
+
+	* run_make_tests.pl (set_more_defaults): If we can't find
+	gnumake.h based on the make program we might be running from a
+	remote build directory.  Parse the Makefile for the right path.
+
+	Fix some test issues on Solaris.
+
+	* scripts/features/archives: Determine what output ar gives when
+	adding and replacing objects and compare with that.
+	* scripts/features/escape: Solaris /bin/sh doesn't properly handle
+	backslashes inside single quotes, so don't rely on it.
+	* scripts/features/output-sync: false(1) gives different exit
+	codes on different systems; use "exit 1" instead.
+	* scripts/features/parallelism: Increase the timeout for slower systems.
+
+2013-09-21  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/archives: Some versions of ar (MacOSX) generate
+	different output when creating archives.  Run it and verify the
+	real output.
+	* scripts/features/default_names: MacOSX is, like Windows,
+	case-preserving / case-insensitive.  Redo the test to avoid
+	checking for "UNIX".
+	* test_driver.pl (attach_default_output): Don't dup stdout into
+	stderr.  Reported by Denis Excoffier <bug-tar@Denis-Excoffier.org>
+
+	* scripts/features/se_explicit: Fix a test that behaves
+	differently with/without archive capability enabled.
+	* scripts/features/output-sync: Don't test output-sync if it's not
+	enabled.  We also skip it if parallelism is not enabled, although
+	strictly speaking some of the output-sync tests are valid even
+	without parallelism.
+	* scripts/features/jobserver: Move some tests that require the
+	jobserver from features/parallelism to a separate suite.  Only run
+	this if jobserver mode is enabled.
+
+	* scripts/features/output-sync: Test shell functions writing to
+	stderr in recipes: ensure it's captured via output-sync.  Test
+	output generated while reading makefiles and make sure it's
+	captured via output-sync.  Make sure that fatal errors dump the
+	output so it's not lost.
+
+	* scripts/options/dash-w: Add a test for -w flag.
+
+2013-09-15  Paul Smith  <psmith@gnu.org>
+
+	* scripts/misc/fopen-fail: Check for failure on infinite recursion.
+	* run_make_tests.pl (run_make_test): Allow the answer string to be
+	undef, which means that we shouldn't compare it at all.  Only the
+	exit code matters in this case.
+	* test_driver.pl (compare_output): Ditto.
+	Test for Savannah bug #27374.
+
+	* scripts/features/parallelism: Test broken jobserver on recursion.
+	Test for Savannah bug #39934.
+
+	* scripts/options/eval: Verify --eval during restart.
+	Test for Savannah bug #39203.
+
+2013-09-14  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/output-sync: Verify -Orecurse properly.
+
+2013-09-12  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/output-sync: Modify for output sync behavior.
+	* scripts/variables/MAKE_RESTARTS: Ditto.
+	* scripts/variables/MAKEFLAGS: Remove mode for --trace.
+	* scripts/variables/GNUMAKEFLAGS: Ditto.
+
+2013-07-22  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/rule_glob: Add tests for wildcards in rules.
+	Test for Savannah bug #39310.
+
+2013-07-09  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/se_implicit: Add a test for SE rules depending
+	on other SE rules to be built.
+
+2013-05-26  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/archives: Test for Savannah bug #38442.
+
+	* scripts/misc/bs-nl: Test for Savannah bug #39035.
+	Add a test for Savannah bug #38945.
+
+2013-05-22  Paul Smith  <psmith@gnu.org>
+
+	* scripts/options/dash-n: Fix results after MAKEFLAGS fixes.
+	* scripts/variables/MAKEFLAGS: Ditto.
+	* scripts/variables/GNUMAKEFLAGS: Ditto.
+
+2013-05-14  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/loadapi: Add plugin_is_GPL_compatible symbol.
+	* scripts/features/load: Ditto.
+
+2013-05-13  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/output-sync (output_sync_set): Update for new
+	--trace behavior.
+
+2013-05-05  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/output-sync (output_sync_set): Remove
+	extraneous enter/leave lines, which are no longer printed.
+	Add tests for syncing command line printing.
+	(output_sync_set): Rename options: "job"->"line"; "make"->"recurse"
+
+2013-05-04  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/loadapi: Use the new alloc functions.
+
+	* scripts/features/output-sync (output_sync_set): New test for
+	ordered recursive output for -Ojob / -Otarget.
+
+2013-05-03  Eli Zaretskii  <eliz@gnu.org>
+
+	* scripts/features/load: Fix signatures of testload_gmk_setup and
+	explicit_setup, to bring them in line with the documentation.
+
+2013-04-28  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/output-sync (output_sync_set): Add tests for
+	the per-job syntax mode.
+	(output_sync_set): Test improved error message location.
+
+2013-04-15  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/output-sync (output_sync_set): New arg syntax.
+
+2013-04-14  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/output-sync: Rewrite to be more reliable.
+
+	* test_driver.pl (_run_command): Don't set SIGALRM until after we
+	start the child.  Print errors to the top-level output, which will
+	be stderr.
+	(attach_default_output): Use a list of file handles as the stack.
+	(detach_default_output): Ditto.
+
+	* scripts/features/output-sync: Add a test for output-sync.
+
+2013-02-25  Paul Smith  <psmith@gnu.org>
+
+	* run_make_tests.pl (valid_option): Support the -srcdir flag.
+	(set_more_defaults): Set up $srcdir if it's not set yet.
+
+	* scripts/functions/guile: Verify gmk-eval doesn't expand twice.
+	* scripts/features/load: Rework to test just the load capability.
+	* scripts/features/loadapi: New set of tests for the load API.
+
+2013-01-19  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/load: Test loaded files with and without "./"
+	prefix.  Add tests for automatically rebuilding loaded files if
+	they are out of date or non-existent.
+
+2013-01-13  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/archives: Add a check targets that have parens,
+	but are not archives.  See Savannah bug #37878.
+
+	* scripts/options/dash-n: Verify -n is preserved after recursive /
+	re-exec.  See Savannah bug #38051.
+
+2013-01-12  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/parallelism: Change rule so it doesn't depend
+	on invocation order, etc.
+
+2012-10-29  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/load: New test suite for the "load" directive.
+
+2012-09-09  Paul Smith  <psmith@gnu.org>
+
+	* scripts/functions/file: Get errors in the C locale, not the
+	current locale.  Fixes Savannah bug #35764.
+
+	* scripts/features/escape: Check that backslashes before
+	non-special characters are not removed.
+
+	* scripts/features/utf8: New test for UTF-8 support.
+	See Savannah bug #36529.
+
+	* scripts/targets/POSIX: Add tests for default macro values as
+	specified by IEEE Std 1003.1-2008.  See Savannah bug #37069.
+
+2012-03-04  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/se_explicit: Test $(x:%=%) format in secondary
+	expansion prerequisite lists.  See Savannah bug #16545.
+
+	* scripts/features/escape: Test escaped ":" in prerequisite lists.
+	See Savannah bug #12126.
+
+	* scripts/variables/private: Test appending private variables in
+	pattern-specific target rules.  See Savannah bug #35468.
+
+2012-03-03  Paul Smith  <psmith@gnu.org>
+
+	* scripts/variables/SHELL: Ensure .SHELLFLAGS works with options
+	separated by whitespace.
+
+	* scripts/targets/ONESHELL: Try .ONESHELL in combination with
+	whitespace-separated options in .SHELLFLAGS.  See Savannah bug #35397.
+
+	* scripts/functions/filter-out: Add filter tests and test escape
+	operations.  See Savannah bug #35410.
+
+	* guile.supp: Suppress valgrind errors from Guile
+	* run_make_tests.pl: Use the Guile suppression file.
+
+	* scripts/misc/bs-nl: Check for POSIX and non-POSIX
+	backslash/newline handling.  Addresses Savannah bug #16670.
+
+2012-01-29  Paul Smith  <psmith@gnu.org>
+
+	* scripts/variables/flavors: Add tests for ::=
+	* scripts/variables/define: Ditto
+
+	* scripts/functions/file: Test the new $(file ...) function.
+
+2012-01-12  Paul Smith  <psmith@gnu.org>
+
+	* scripts/functions/guile: New regression tests for Guile support.
+
+2011-12-10  Paul Smith  <psmith@gnu.org>
+
+	* scripts/targets/SECONDARY: Add prereq statements to ensure rules
+	are printed in the right order for test #9
+
+2011-11-14  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/double_colon: Check double-colon with escaped
+	filenames.  See Savannah bug #33399.
+
+2011-09-18  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/parallelism: On re-exec make sure we preserve
+	the value of MAKEFLAGS when necessary.  See Savannah bug #33873.
+
+	* scripts/features/vpath3: Verify handling of -lfoo libraries
+	found via vpath vs. the standard directory search.
+	See Savannah bug #32511.
+
+2011-09-12  Paul Smith  <psmith@gnu.org>
+
+	* scripts/functions/call: Verify that using export in a $(call ...)
+	context creates a global variable.  See Savannah bug #32498.
+
+2011-09-02  Paul Smith  <psmith@gnu.org>
+
+	* scripts/options/dash-n: Verify that in "-n -t", the -n takes
+	priority.  Patch from Michael Witten <mfwitten@gmail.com>.
+
+2011-08-29  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/varnesting: Test resetting of variables while
+	expanding them.  See Savannah patch #7534
+
+2011-06-12  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/archives: Check archives with whitespace at the
+	beginning, end, and extra in the middle.
+	Another test for Savannah bug #30612.
+
+2011-05-07  Paul Smith  <psmith@gnu.org>
+
+	* scripts/variables/private: Ensure we skip private variables when
+	appending.  Test for Savannah bug #32872.
+
+	* scripts/functions/wildcard: Verify wildcard used to test for
+	file existence/non-existence.
+
+2011-05-02  Paul Smith  <psmith@gnu.org>
+
+	* scripts/functions/sort: Add a test for Savannah bug #33125.
+
+2011-04-17  David A. Wheeler  <dwheeler@dwheeler.com>
+
+	* scripts/features/shell_assignment: Regression for "!=" feature
+
+2010-11-06  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/targetvars: Fix known-good output for BS/NL changes.
+	* scripts/functions/call: Ditto.
+	* scripts/variables/special: Ditto.
+
+	* scripts/misc/bs-nl: New test suite for backslash/newline testing.
+
+2010-08-29  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/errors: Add new error message to output text.
+	* scripts/variables/SHELL: Ditto.
+	* scripts/targets/POSIX: Ditto.
+	* scripts/options/dash-k: Ditto.
+	* scripts/features/vpathplus: Ditto.
+	* scripts/features/patternrules: Ditto.
+	* scripts/features/parallelism: Ditto.
+
+2010-08-13  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/archives: New regression tests for archive
+	support.  Test for fix to Savannah bug #30612.
+
+	* run_make_tests.pl (set_more_defaults): Set a %FEATURES hash to
+	the features available in $(.FEATURES).
+
+2010-08-10  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/reinvoke: Ensure command line variable settings
+	are preserved across make re-exec.  Tests Savannah bug #30723.
+
+2010-07-28  Paul Smith  <psmith@gnu.org>
+
+	* scripts/targets/POSIX: Compatibility issues with Solaris (and
+	Tru64?); "false" returns different exit codes, and set -x shows
+	output with extra whitespace.  Run the commands by hand first to
+	find out what the real shell would do, then compare what make does.
+	* scripts/variables/SHELL: Ditto.
+
+2010-07-12  Paul Smith  <psmith@gnu.org>
+
+	* test_driver.pl: Add a new $perl_name containing the path to Perl.
+	* run_make_tests.pl (run_make_test): Replace the special string
+	#PERL# in a makefile etc. with the path the Perl executable so
+	makefiles can use it.
+
+	* scripts/targets/ONESHELL: Add a new set of regression tests for
+	the .ONESHELL feature.
+
+2010-07-06  Paul Smith  <psmith@gnu.org>
+
+	* scripts/variables/SHELL: Test the new .SHELLFLAGS variable.
+
+	* scripts/targets/POSIX: New file.  Test the .POSIX special target.
+	Verify that enabling .POSIX changes the shell flags to set -e.
+
+2010-07-01  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/recursion: Add a space to separate command-line
+	args.  Fixes Savannah bug #29968.
+
+2009-11-12  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* scripts/features/vpath3: Test for the new library search
+	behavior.
+
+2009-10-06  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* scripts/features/se_explicit: Enable the test for now fixed
+	Savannah bug 25780.
+
+2009-10-06  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* scripts/variables/undefine: Tests for the new undefine feature.
+
+2009-10-03  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/parallelism: Test for open Savannah bug #26846.
+
+	* scripts/variables/MAKE: Rewrite for new run_make_test() format.
+
+	* scripts/variables/MAKEFLAGS: Created.
+	Add test for Savannah bug #2216 (still open).
+
+	* scripts/features/include: Test for Savannah bug #102 (still open).
+
+2009-09-30  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* scripts/features/include: Add diagnostics issuing tests for
+	cases where targets have been updated and failed with the
+	dontcare flag. Savannah bugs #15110, #25493, #12686, #17740.
+
+2009-09-28  Paul Smith  <psmith@gnu.org>
+
+	* scripts/functions/shell: Add regression test for Savannah bug
+	#20513 (still open).
+
+	* scripts/features/se_explicit: Add regression tests for Savannah
+	bug #25780 (still open).
+
+	* run_make_tests.pl (valid_option): Add a new flag, -all([-_]?tests)?
+	that runs tests we know will fail.  This allows us to add
+	regression tests to the test suite for bugs that haven't been
+	fixed yet.
+
+2009-09-28  Boris Kolpackov  <boris@codesynthesis.com>
+
+	* scripts/features/patspecific_vars: Add a test for the shortest
+	stem first order.
+
+	* scripts/features/patternrules: Add a test for the shortest stem
+	first order.
+
+2009-09-24  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/se_implicit: Add a test for order-only
+	secondary expansion prerequisites.
+
+2009-09-23  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/patternrules: Test that we can remove pattern
+	rules, both single and multiple prerequisites.  Savannah bug #18622.
+
+	* scripts/features/echoing: Rework for run_make_test().
+
+2009-06-14  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/vpath: Verify we don't get bogus circular
+	dependency warnings if we choose a different file via vpath during
+	update.  Savannah bug #13529.
+
+2009-06-13  Paul Smith  <psmith@gnu.org>
+
+	* scripts/variables/MAKEFILES: Verify that MAKEFILES included
+	files (and files included by them) don't set the default goal.
+	Savannah bug #13401.
+
+	* scripts/functions/wildcard: Test that wildcards with
+	non-existent glob matchers return empty.
+
+2009-06-09  Paul Smith  <psmith@gnu.org>
+
+	* scripts/options/dash-B: Test the $? works correctly with -B.
+	Savannah bug #17825.
+
+	* scripts/features/patternrules: Test that dependencies of
+	"also_make" targets are created properly.  Savannah bug #19108.
+
+	* test_driver.pl (compare_output): Create a "run" file for failed
+	tests containing the command that was run.
+	(get_runfile): New function.
+
+	* run_make_tests.pl (valid_option): Enhanced support for valgrind:
+	allow memcheck and massif tools.
+
+	* scripts/features/patternrules: Have to comment out a line in the
+	first test due to backing out a change that broke the implicit
+	rule search algorithm.  Savannah bug #17752.
+	* scripts/misc/general4: Remove a test that is redundant with
+	patternrules.
+
+	* scripts/features/parallelism: Add a test for re-exec with
+	jobserver master override.  Savannah bug #18124.
+
+2009-06-08  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/targetvars: Add a test for continued target
+	vars after a semicolon.  Savannah bug #17521.
+
+2009-06-07  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/se_explicit: Make sure we catch defining
+	prereqs during snap_deps().  Savannah bug #24622.
+
+	* scripts/variables/automatic: Check prereq ordering when the
+	target with the recipe has no prereqs.  Savannah bug #21198.
+
+	* scripts/variables/LIBPATTERNS: Add a new set of test for
+	$(.LIBPATTERNS) (previously untested!)
+
+2009-06-04  Paul Smith  <psmith@gnu.org>
+
+	* scripts/variables/SHELL: The export target-specific SHELL test
+	has an incorrect known-good-value.
+
+	* scripts/misc/general4: Check for whitespace (ffeed, vtab, etc.)
+
+	* scripts/features/se_explicit: Add tests for Savannah bug #24588.
+
+2009-05-31  Paul Smith  <psmith@gnu.org>
+
+	* scripts/variables/DEFAULT_GOAL: Add tests for Savannah bug #25697.
+
+	* scripts/features/targetvars: Add tests of overrides for Savannah
+	bug #26207.
+	* scripts/features/patspecific_vars: Ditto.
+
+	* scripts/features/patternrules: Add a test for Savannah bug #26593.
+
+2009-05-30  Paul Smith  <psmith@gnu.org>
+
+	* scripts/variables/flavors: Update with new variable flavor tests.
+	* scripts/variables/define: Create a new set of tests for
+	define/endef and move those aspects of the flavors suite here.
+
+2009-05-25  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/targetvars: Ditto.
+
+	* scripts/features/export: Test new variable parsing abilities.
+
+2009-02-23  Ramon Garcia  <ramon.garcia.f@gmail.com>
+
+	* scripts/variables/private: Create a new suite of tests for 'private'.
+
+2007-11-04  Paul Smith  <psmith@gnu.org>
+
+	* scripts/functions/eval: Update error message for command -> recipe.
+
+	* test_driver.pl (compare_output): Allow the answer to be a regex,
+	if surrounded by '/'.
+	* scripts/misc/close_stdout: Use a regex for the answer, since
+	sometimes the error will have a description and sometimes it won't.
+
+2007-09-10  Paul Smith  <psmith@gnu.org>
+
+	* scripts/variables/special: Add tests for .RECIPEPREFIX variable.
+
+2007-08-15  Paul Smith  <psmith@gnu.org>
+
+	These test cases were contributed by
+	Icarus Sparry <savannah@icarus.freeuk.com> and J. David Bryan for
+	Savannah bugs #3330 and #15919.
+
+	* scripts/targets/SECONDARY: Add tests for Savannah bugs 3330 and
+	15919.
+
+	* scripts/features/parallelism: Add tests for wrong answer/hang
+	combining INTERMEDIATE, order-only prereqs, and parallelism.
+	See Savannah bugs 3330 and 15919.
+
+2007-07-13  Paul Smith  <psmith@gnu.org>
+
+	Install a timeout so tests can never loop infinitely.
+	Original idea and patch for a single-test version provided by
+	Icarus Sparry <savannah@icarus.freeuk.com>
+
+	* test_driver.pl (_run_command): New function: this is called by
+	other functions to actually run a command.  Before we run it,
+	install a SIGALRM handler and set up a timer to go off in the
+	future (default is 5s; this can be overridden by individual tests).
+	(run_command): Call it.
+	(run_command_with_output): Call it.
+
+	* run_make_tests.pl (run_make_with_options): Override the default
+	timeout if the caller requests it.
+	(run_make_test): Pass any timeout override to run_make_with_options.
+
+	* scripts/features/parallelism: Increase the timeout for long tests.
+	* scripts/options/dash-l: Ditto.
+
+2006-10-01  Paul Smith  <psmith@paulandlesley.org>
+
+	* run_make_tests.pl (set_more_defaults): Remove setting of LANG in
+	ENV here.  This doesn't always work.
+	* test_driver.pl (toplevel): Set LC_ALL to 'C' in the make
+	environment.  Fixes Savannah bug #16698.
+
+2006-09-30  Paul Smith  <psmith@paulandlesley.org>
+
+	* scripts/variables/automatic: Add back the test for bug #8154.
+
+2006-04-01  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/realpath: Don't run tests with multiple
+	initial slashes on Windows: those paths mean something different.
+
+2006-03-19  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/parallelism: Test that the jobserver is
+	properly managed when we have to re-exec the master instance of
+	make.
+
+2006-03-17  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/statipattrules: Add tests for bug #16053.
+
+2006-03-09  Paul Smith  <psmith@gnu.org>
+
+	* scripts/features/escape: Use "pre:" not "p:" to avoid conflicts
+	with DOS drive letters.  Fixes Savannah bug #15947.
+
+	* test_driver.pl (run_each_test): Set the status properly even
+	when a test fails to execute.  Fixes Savannah bug #15942.
+
+	* scripts/functions/foreach: Use a different environment variable
+	other than PATH to avoid differences with Windows platforms.
+	Fixes Savannah bug #15938.
+
+2006-03-05  Paul D. Smith  <psmith@gnu.org>
+
+	* run_make_tests.pl (set_more_defaults): Add CYGWIN_NT as a port
+	type W32.  Fixed Savannah bug #15937.
+
+	* scripts/features/default_names: Don't call error() when the test
+	fails.  Fixes Savannah bug #15941.
+
+2006-02-17  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/targetvars: Test a complex construction which
+	guarantees that we have to merge variable lists of different
+	sizes.  Tests for Savannah bug #15757.
+
+2006-02-15  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/error: Make sure filename/lineno information
+	is related to where the error is expanded, not where it's set.
+	* scripts/functions/warning: Ditto.
+	* scripts/functions/foreach: Check for different error conditions.
+	* scripts/functions/word: Ditto.
+	* scripts/variables/negative: Test some variable reference failure
+	conditions.
+	* scripts/options/warn-undefined-variables: Test the
+	--warn-undefined-variables flag.
+
+2006-02-09  Paul D. Smith  <psmith@gnu.org>
+
+	* run_make_tests.pl (set_more_defaults): Update valgrind support
+	for newer versions.
+	* test_driver.pl (toplevel): Skip all hidden files/directories (ones
+	beginning with ".").
+
+	* scripts/functions/andor: Tests for $(and ...) and $(or ...)
+	functions.
+
+2006-02-08  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/parallelism: Add a test for bug #15641.
+
+2006-02-06  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/options/dash-W: Add a test for bug #15341.
+
+2006-01-03  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/variables/automatic: Add a test for bug #8154.
+
+	* README: Update to reflect the current state of the test suite.
+
+2005-12-12  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/parallelism, scripts/functions/wildcard,
+	scripts/targets/FORCE, scripts/targets/PHONY,
+	scripts/targets/SILENT: Use the default setting for
+	$delete_command.  Fixes bug #15085.
+
+	* run_make_tests.pl (get_this_pwd) [VMS]: Use -no_ask with delete_file.
+
+2005-12-11  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/misc/general4: Test implicit rules with '$' in the
+	prereq list & prereq patterns.
+	* scripts/features/se_implicit: Add in .SECONDEXPANSION settings.
+
+2005-12-09  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/patternrules: Add a test for bug #13022.
+
+2005-12-07  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/double_colon: Add a test for bug #14334.
+
+2005-11-17  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/functions/flavor: Add a test for the flavor function.
+
+2005-11-14  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/variables/INCLUDE_DIRS: Add a test for the .INCLUDE_DIRS
+	special variable.
+
+2005-10-24  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/misc/general4: Test '$$' in prerequisites list.
+	* scripts/features/statipattrules: Rewrite to use run_make_test().
+	Add various static pattern info.
+	* scripts/features/se_statpat: Enable .SECONDEXPANSION target.
+	* scripts/features/se_explicit: Add tests for handling '$$' in
+	prerequisite lists with and without setting .SECONDEXPANSION.
+	* scripts/features/order_only: Convert to run_make_test().
+	* run_make_tests.pl (set_more_defaults): If we can't get the value
+	of $(MAKE) from make, then fatal immediately.
+
+2005-08-31  Paul D. Smith  <psmith@gnu.org>
+
+	* run_make_tests.pl (get_this_pwd): Require the POSIX module (in
+	an eval to trap errors) and if it exists, use POSIX::getcwd to
+	find the working directory.  If it doesn't exist, go back to the
+	previous methods.  This tries to be more accurate on Windows
+	systems.
+
+2005-08-29  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/abspath: Add some text to the error messages
+	to get a better idea of what's wrong.  Make warnings instead of
+	errors.
+
+	* scripts/features/patspecific_vars: Don't use "test", which is
+	UNIX specific.  Print the values and let the test script match
+	them.
+
+2005-08-25  Paul Smith  <psmith@gnu.org>
+
+	* scripts/variables/SHELL: Use a /./ prefix instead of //: the
+	former works better with non-UNIX environments.  Fixes Savannah
+	bug #14129.
+
+2005-08-13  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/functions/wildcard: Wrap calls to $(wildcard) with
+	$(sort) so that the resulting order is no longer filesystem-
+	dependent.
+
+2005-08-10  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/statipattrules: Add a test for Savannah bug #13881.
+
+2005-08-07  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/parallelism: Add a test for a bug reported by
+	Michael Matz (matz@suse.de) in which make exits without waiting
+	for all its children in some situations during parallel builds.
+
+2005-07-08  Paul D. Smith  <psmith@gnu.org>
+
+	* test_driver.pl: Reset the environment to a clean value every
+	time before we invoke make.  I'm suspicious that the environment
+	isn't handled the same way in Windows as it is in UNIX, and some
+	variables are leaking out beyond the tests they are intended for.
+	Create an %extraENV hash tests can set to add more env. vars.
+	* tests/scripts/features/export: Change to use %extraENV.
+	* tests/scripts/functions/eval: Ditto.
+	* tests/scripts/functions/origin: Ditto.
+	* tests/scripts/options/dash-e: Ditto.
+	* tests/scripts/variables/SHELL: Ditto.
+
+2005-06-27  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/options/dash-W: Use 'echo >>' instead of touch to update
+	files.
+	* scripts/features/reinvoke: Rewrite to be safer on systems with
+	subsecond timestamps.
+	* scripts/features/patternrules: False exits with different error
+	codes on different systems (for example, Linux => 1, Solaris => 255).
+
+	* scripts/options/dash-W: Set the timestamp to foo.x in the future,
+	to be sure it will be considered updated when it's remade.
+
+2005-06-26  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/shell: New test suite for the shell function.
+
+2005-06-25  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/include: Test include/-include/sinclude with no
+	arguments.  Tests fix for Savannah bug #1761.
+
+	* scripts/misc/general3: Implement comprehensive testing of
+	backslash-newline behavior in command scripts: various types of
+	quoting, fast path / slow path, etc.
+	Tests fix for Savannah bug #1332.
+
+	* scripts/options/symlinks: Test symlinks to non-existent files.
+	Tests fix for Savannah bug #13280.
+
+	* scripts/misc/general3: Test semicolons in variable references.
+	Tests fix for Savannah bug #1454.
+
+	* scripts/variables/MAKE_RESTARTS: New file: test the
+	MAKE_RESTARTS variable.
+	* scripts/options/dash-B: Test re-exec doesn't loop infinitely.
+	Tests fix for Savannah bug #7566.
+	* scripts/options/dash-W: New file: test the -W flag, including
+	re-exec infinite looping.
+
+2005-06-12  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/misc/close_stdout: Add a test for Savannah bug #1328.
+	This test only works on systems that have /dev/full (e.g., Linux).
+
+2005-06-09  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/foreach: Add a test for Savannah bug #11913.
+
+2005-05-31  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/include: Add a test for Savannah bug #13216.
+	* scripts/features/patternrules: Add a test for Savannah bug #13218.
+
+2005-05-13  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/conditionals: Add tests for the new if... else
+	if... endif syntax.
+
+2005-05-03  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/variables/DEFAULT_GOAL: Rename DEFAULT_TARGET to
+	DEFAULT_GOAL.
+
+2005-05-02  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/parallelism: Add a test for exporting recursive
+	variables containing $(shell) calls.  Rewrite this script to use
+	run_make_test() everywhere.
+
+2005-04-07  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/targets/SECONDARY: Add a test for Savannah bug #12331.
+
+2005-03-15  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/variables/automatic: Add a test for Savannah bug #12320.
+
+2005-03-10  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/patternrules: Add a test for Savannah bug #12267.
+
+2005-03-09  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/variables/DEFAULT_TARGET: Add a test for Savannah
+	bug #12266.
+
+2005-03-04  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/patternrules: Add a test for Savannah bug #12202.
+
+2005-03-03  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/se_implicit: Add a test for stem
+	termination bug. Add a test for stem triple-expansion bug.
+
+	* scripts/features/se_statpat: Add a test for stem
+	triple-expansion bug.
+
+	* scripts/features/statipattrules: Change test #4 to reflect
+	new way empty prerequisite list is handled.
+
+
+2005-03-01  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/statipattrules: Add a test for
+	Savannah bug #12180.
+
+2005-02-28  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/options/dash-q: Add a test for Savannah bug # 7144.
+
+	* scripts/options/symlinks: New file to test checking of symlink
+	timestamps.  Can't use filename dash-L because it conflicts with
+	dash-l on case-insensitive filesystems.
+
+	* scripts/variables/MAKEFILE_LIST, scripts/variables/MFILE_LIST:
+	Rename MAKEFILE_LIST test to MFILE_LIST, for systems that need 8.3
+	unique filenames.
+
+2005-02-28  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/variables/DEFAULT_TARGET: Test the .DEFAULT_TARGET
+	special variable.
+
+2005-02-27  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/se_explicit: Test the second expansion in
+	explicit rules.
+	* scripts/features/se_implicit: Test the second expansion in
+	implicit rules.
+	* scripts/features/se_statpat: Test the second expansion in
+	static pattern rules.
+	* scripts/variables/automatic: Fix to work with the second
+	expansion.
+
+	* scripts/misc/general4: Add a test for bug #12091.
+
+2005-02-27  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/eval: Check that eval of targets within
+	command scripts fails.  See Savannah bug # 12124.
+
+2005-02-26  Paul D. Smith  <psmith@gnu.org>
+
+	* test_driver.pl (compare_output): If a basic comparison of the
+	log and answer doesn't match, try harder: change all backslashes
+	to slashes and all CRLF to LF.  This helps on DOS/Windows systems.
+
+2005-02-09  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/recursion: Test command line variable settings:
+	only one instance of a given variable should be provided.
+
+2004-11-30  Boris Kolpackov  <boris@kolpackov.net>
+
+	* tests/scripts/functions/abspath: New file: test `abspath'
+	built-in function.
+
+	* tests/scripts/functions/realpath: New file: test `realpath'
+	built-in function.
+
+2004-11-28  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/options/dash-C [WINDOWS32]: Add a test for bug #10252;
+	this doesn't really test anything useful in UNIX but...
+
+	* scripts/variables/SHELL: New file: test proper handling of SHELL
+	according to POSIX rules.  Fixes bug #1276.
+
+2004-10-21  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/functions/word: Test $(firstword ) and $(lastword ).
+
+2004-10-05  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/patspecific_vars: Test simple/recursive
+	variable expansion.
+
+2004-09-28  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/include: Test dontcare flag inheritance
+	when rebuilding makefiles.
+
+2004-09-27  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/patspecific_vars: Test exported variables.
+
+2004-09-22  Paul D. Smith  <psmith@gnu.org>
+
+	* run_make_tests.pl (run_make_test): Don't add newlines to the
+	makestring or answer if they are completely empty.
+
+	* scripts/features/patternrules: Rename from implicit_prereq_eval.
+
+	* scripts/test_template: Rework the template.
+
+2004-09-21  Boris Kolpackov  <boris@kolpackov.net>
+
+	* run_make_tests.pl: Change `#!/usr/local/bin/perl' to be
+	`#!/usr/bin/env perl'.
+
+	* scripts/features/implicit_prereq_eval: Test implicit rule
+	prerequisite evaluation code.
+
+2004-09-21  Paul D. Smith  <psmith@gnu.org>
+
+	* run_make_tests.pl (run_make_test): Enhance to allow the make
+	string to be undef: in that case it reuses the previous make
+	string.  Allows multiple tests on the same makefile.
+
+	* scripts/variables/flavors: Add some tests for prefix characters
+	interacting with define/endef variables.
+
+2004-09-20  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/substitution: Rewrite to use run_make_test()
+	interface, and add test for substitution failures reported by
+	Markus Mauhart <qwe123@chello.at>.
+
+2004-03-22  Paul D. Smith  <psmith@gnu.org>
+
+	* test_driver.pl (run_each_test, toplevel, compare_output): Change
+	to track both the testing categories _AND_ the number of
+	individual tests, and report both sets of numbers.
+
+2004-02-21  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/origin: Set our own environment variable
+	rather than relying on $HOME.
+
+2004-01-21  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/conditionals: Test arguments to ifn?def which
+	contain whitespace (such as a function that is evaluated).  Bug
+	#7257.
+
+2004-01-07  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/order_only: Test order-only prerequisites in
+	pattern rules (patch #2349).
+
+2003-11-02  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/if: Test if on conditionals with trailing
+	whitespace--bug #5798.
+
+	* scripts/functions/eval: Test eval in a non-file context--bug #6195.
+
+2003-04-19  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/patspecific_vars: Test multiple patterns
+	matching the same target--Bug #1405.
+
+2003-04-09  Paul D. Smith  <psmith@gnu.org>
+
+	* run_make_tests.pl (set_more_defaults): A new $port_type of
+	'OS/2' for (surprise!) OS/2.  Also choose a wait time of 2 seconds
+	for OS/2.
+
+2003-03-28  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/targets/SECONDARY: Test the "global" .SECONDARY (with
+	not prerequisites)--Bug #2515.
+
+2003-01-30  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/targetvars: Test very long target-specific
+	variable definition lines (longer than the default make buffer
+	length).  Tests patch # 1022.
+
+	* scripts/functions/eval: Test very recursive $(eval ...) calls
+	with simple variable expansion (bug #2238).
+
+	* scripts/functions/word: Test error handling for word and
+	wordlist functions (bug #2407).
+
+2003-01-22  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/call: Test recursive argument masking (bug
+	#1744).
+
+2002-10-25  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/eval: Test using $(eval ...) inside
+	conditionals (Bug #1516).
+
+2002-10-14  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/options/dash-t: Add a test for handling -t on targets
+	with no commands (Bug #1418).
+
+2002-10-13  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/targetvars: Add a test for exporting
+	target-specific vars (Bug #1391).
+
+2002-10-05  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/variables/automatic: Add tests for $$(@), $${@}, $${@D},
+	and $${@F}.
+
+2002-09-23  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/escape: Test handling of escaped comment
+	characters in targets and prerequisites.
+
+2002-09-18  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/export: Test export/unexport of multiple
+	variables in a single command.
+
+2002-09-17  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/targetvars: Tests for Bug #940: test
+	target-specific and pattern-specific variables in conjunction with
+	double-colon targets.
+
+2002-09-10  Paul D. Smith  <psmith@gnu.org>
+
+	* test_driver.pl (compare_output): Match the new format for time
+	skew error messages.
+
+	* scripts/features/export: Created.  Add tests for export/unexport
+	capabilities, including exporting/unexporting expanded variables.
+
+	* scripts/features/conditionals: Add a test for expanded variables
+	in ifdef conditionals.
+
+2002-09-04  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/reinvoke: Change touch/sleep combos to utouch
+	invocations.
+	* scripts/features/vpathgpath: Ditto.
+	* scripts/features/vpathplus: Ditto.
+	* scripts/options/dash-n: Ditto.
+	* scripts/targets/INTERMEDIATE: Ditto.
+	* scripts/targets/SECONDARY: Ditto.
+
+	* scripts/options/dash-t: Added a test for the -t bug fixed by
+	Henning Makholm.  This test was also contributed by Henning.
+
+	* scripts/misc/general4: Add a test suite for obscure algorithmic
+	features of make.  First test: make sure creation subdirectories
+	as prerequisites of targets works properly.
+
+	* scripts/misc/version: Remove this bogus test.
+
+2002-08-07  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/misc/general3: Add a test for makefiles that don't end
+	in newlines.
+
+	* scripts/variables/special: Create tests for the special
+	variables (.VARIABLES and .TARGETS).  Comment out .TARGETS test
+	for now as it's not yet supported.
+
+2002-08-01  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/options/dash-B: Add a test for the new -B option.
+
+2002-07-11  Paul D. Smith  <psmith@gnu.org>
+
+	* run_make_tests.pl (valid_option): Add support for Valgrind.  Use
+	-valgrind option to the test suite.
+	(set_more_defaults): Set up the file descriptor to capture
+	Valgrind output.  We have to unset its close-on-exec flag; we
+	hardcode the value for F_SETFD (2) rather than load it; hopefully
+	this will help us avoid breaking the Windows/DOS test suite.
+
+2002-07-10  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/variables/automatic: Add some tests for $$@, $$(@D), and
+	$$(@F).
+
+	* test_driver.pl (utouch): Create a new function that creates a
+	file with a specific timestamp offset.  Use of this function will
+	let us avoid lots of annoying sleep() invocations in the tests
+	just to get proper timestamping, which will make the tests run a
+	lot faster.  So far it's only used in the automatic test suite.
+
+2002-07-09  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/variables/automatic: Create a test for automatic variables.
+
+2002-07-08  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/order_only: Test new order-only prerequisites.
+
+2002-07-07  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/eval: Test new function.
+	* scripts/functions/value: Test new function.
+	* scripts/variables/MAKEFILE_LIST: Test new variable.
+
+2002-04-28  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/call: New test: transitive closure
+	implementation using $(call ...) to test variable recursion.
+
+2002-04-21  Paul D. Smith  <psmith@gnu.org>
+
+	* test_driver.pl (compare_dir_tree): Ignore CVS and RCS
+	directories in the script directories.
+
+2001-05-02  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/variables/flavors: Test define/endef scripts where only
+	one of the command lines is quiet.
+
+2000-06-22  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/options/dash-q: New file; test the -q option.  Includes
+	a test for PR/1780.
+
+2000-06-21  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/targetvars: Added a test for PR/1709: allowing
+	semicolons in target-specific variable values.
+
+2000-06-19  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/addsuffix: Test for an empty final argument.
+	Actually this bug might have happened for any function, but this
+	one was handy.
+
+2000-06-17  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* scripts/options/general: If parallel jobs are not supported,
+	expect a warning message from Make.
+
+2000-06-15  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* scripts/options/general: Don't try -jN with N != 1 if parallel
+	jobs are not supported.
+
+2000-05-24  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/options/general: Test general option processing (PR/1716).
+
+2000-04-11  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/strip: Test empty value to strip (PR/1689).
+
+2000-04-08  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* scripts/features/reinvoke: Sleep before updating the target
+	files in the first test, to ensure its time stamp really gets
+	newer; otherwise Make might re-exec more than once.
+
+2000-04-07  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* scripts/features/double_colon: Don't run the parallel tests if
+	parallel jobs aren't supported.
+
+2000-04-04  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/word: wordlist doesn't swap arguments anymore.
+
+2000-03-27  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/statipattrules: Test that static pattern rules
+	whose prerequisite patterns resolve to empty strings throw an
+	error (instead of dumping core).  Fixes PR/1670.
+
+	* scripts/features/reinvoke: Make more robust by touching "b"
+	first, to ensure it's not newer than "a".
+	Reported by Marco Franzen <Marco.Franzen@Thyron.com>.
+	* scripts/options/dash-n: Ditto.
+
+	* scripts/functions/call: Whoops.  The fix to PR/1527 caused
+	recursive invocations of $(call ...) to break.  I can't come up
+	with any way to get both working at the same time, so I backed out
+	the fix to 1527 and added a test case for recursive calls.  This
+	also tests the fix for PR/1610.
+
+	* scripts/features/double_colon: Test that circular dependencies
+	in double-colon rule sets are detected correctly (PR/1671).
+
+2000-03-26  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/targets/INTERMEDIATE: Test that make doesn't remove
+	.INTERMEDIATE files when given on the command line (PR/1669).
+
+2000-03-08  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/options/dash-k: Add a test for error detection by
+	multiple targets depending on the same prerequisite with -k.
+	For PR/1634.
+
+2000-02-07  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/escape: Add a test for backslash-escaped spaces
+	in a target name (PR/1586).
+
+2000-02-04  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/patspecific_vars: Add a test for pattern-specific
+	target variables inherited from the parent target (PR/1407).
+
+2000-02-02  Paul D. Smith  <psmith@gnu.org>
+
+	* run_make_tests.pl (set_more_defaults): Hard-code the LANG to C
+	to make sure sorting order, etc. is predictable.
+	Reported by Andreas Jaeger <aj@suse.de>.
+
+	* run_make_tests.pl (set_more_defaults): Set the $wtime variable
+	depending on the OS.  Eli Zaretskii <eliz@is.elta.co.il> reports
+	this seems to need to be *4* on DOS/Windows, not just 2.  Keep it
+	1 for other systems.
+	* scripts/features/vpathplus (touchfiles): Use the $wtime value
+	instead of hardcoding 2.
+	* scripts/targets/SECONDARY: Ditto.
+	* scripts/targets/INTERMEDIATE: Ditto.
+
+2000-01-27  Paul D. Smith  <psmith@gnu.org>
+
+	* test_driver.pl (toplevel): Don't try to run test scripts which
+	are really directories.
+
+2000-01-23  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/include: Remove a check; the fix caused more
+	problems than the error, so I removed it and removed the test for
+	it.
+
+2000-01-11  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/call: Add a test for PR/1517 and PR/1527: make
+	sure $(call ...) doesn't eval its arguments and that you can
+	invoke foreach from it without looping forever.
+
+1999-12-15  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/targets/INTERMEDIATE: Add a test for PR/1423: make sure
+	.INTERMEDIATE settings on files don't disable them as implicit
+	intermediate possibilities.
+
+1999-12-01  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/double_colon: Add a test for PR/1476: Try
+	double-colon rules as non-goal targets and during parallel builds
+	to make sure they're handled serially.
+
+1999-11-17  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/if: Add a test for PR/1429: put some text
+	after an if-statement to make sure it works.
+
+	* scripts/features/targetvars: Add a test for PR/1380: handling +=
+	in target-specific variable definitions correctly.
+
+1999-10-15  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/variables/MAKEFILES: This was really broken: it didn't
+	test anything at all, really.  Rewrote it, plus added a test for
+	PR/1394.
+
+1999-10-13  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/options/dash-n: Add a test for PR/1379: "-n doesn't
+	behave properly when used with recursive targets".
+
+1999-10-08  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/targetvars: Add a check for PR/1378:
+	"Target-specific vars don't inherit correctly"
+
+1999-09-29  Paul D. Smith  <psmith@gnu.org>
+
+	* test_driver.pl (get_osname): Change $fancy_file_names to
+	$short_filenames and reverse the logic.
+	(run_each_test): Change test of non-existent $port_host to use
+	$short_filenames--problem reported by Eli Zaretskii.
+
+1999-09-23  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/parallelism: Add a check to ensure that the
+	jobserver works when we re-invoke.  Also cleaned up the tests a
+	little, reducing the number of rules we use so the test won't need
+	as many "sleep" commands.
+
+1999-09-16  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/features/reinvoke: Remove invocations of "touch" in
+	makefiles.  See the comments on the touch function rewrite below.
+	Note that UNIX touch behaves the same way if the file already
+	exists: it sets the time to the _local_ time.  We don't want
+	this.  This is probably a good tip for makefile writers in
+	general, actually... where practical.
+	* scripts/options/dash-l: Ditto.
+	* scripts/options/dash-n: Ditto.
+
+	* test_driver.pl (run_each_test): In retrospect, I don't like the
+	.lN/.bN/.dN postfix required by DOS.  So, for non-DOS systems I
+	changed it back to use .log, .base, and .diff.
+
+	* run_make_tests.pl (set_more_defaults): Move the check for the
+	make pathname to here from set_defaults (that's too early since it
+	happens before the command line processing).
+	Create a new variable $port_type, calculated from $osname, to
+	specify what kind of system we're running on.  We should integrate
+	the VOS stuff here, too.
+	(valid_option): Comment out the workdir/-work stuff so people
+	won't be fooled into thinking it works... someone needs to fix
+	this, though!
+
+	* scripts/functions/origin: Use $port_type instead of $osname.
+	* scripts/functions/foreach: Ditto.
+	* scripts/features/default_names: Ditto.
+
+1999-09-15  Paul D. Smith  <psmith@gnu.org>
+
+	* test_driver.pl (touch): Rewrite this function.  Previously it
+	used to use utime() to hard-set the time based on the current
+	local clock, or, if the file didn't exist, it merely created it.
+	This mirrors exactly what real UNIX touch does, but it fails badly
+	on networked filesystems where the FS server clock is skewed from
+	the local clock: normally modifying a file causes it to get a mod
+	time based on the _server's_ clock.  Hard-setting it based on the
+	_local_ clock causes gratuitous errors and makes the tests
+	unreliable except on local filesystems.  The new function will
+	simply modify the file, allowing the filesystem to set the mod
+	time as it sees fit.
+
+	* scripts/features/parallelism: The second test output could
+	change depending on how fast some scripts completed; use "sleep"
+	to force the order we want.
+
+	* test_driver.pl (toplevel): A bug in Perl 5.000 to Perl 5.004
+	means that "%ENV = ();" doesn't do the right thing.  This worked
+	in Perl 4 and was fixed in Perl 5.004_01, but use a loop to delete
+	the environment rather than require specific versions.
+
+	* run_make_tests.pl (set_more_defaults): Don't use Perl 5 s///
+	modifier "s", so the tests will run with Perl 4.
+	(set_more_defaults): Set $pure_log to empty if there's no -logfile
+	option in PURIFYOPTIONS.
+	(setup_for_test): Don't remove any logs unless $pure_log is set.
+
+1999-09-15  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* scripts/features/reinvoke: Put the SHELL definition in the right
+	test makefile.
+
+1999-09-15  Paul D. Smith  <psmith@gnu.org>
+
+	ChangeLog file for the test suite created.
+
+
+Copyright (C) 1992-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/tests/NEWS b/src/kmk/tests/NEWS
new file mode 100644
index 0000000..f55e4ba
--- /dev/null
+++ b/src/kmk/tests/NEWS
@@ -0,0 +1,178 @@
+Changes from 0.4.9 to 3.78 (Sep 6, 1999):
+
+    Lots of new tests.  Renamed to follow the GNU make scheme.  Also
+    added some support for using Purify with make.
+
+    Rob Tulloh contributed some changes to get the test suite running on
+    NT; I tweaked them a bit (hopefully I didn't break anything!)  Note
+    that NT doesn't grok the self-exec funkiness that Unix shells use,
+    so instead I broke that out into a separate shell script
+    "run_make_tests" that invokes perl with the (renamed) script
+    run_make_tests.pl.
+
+    Eli Zaretski contributed changes to get the test suite running on
+    DOS with DJGPP.  I also meddled in these somewhat.
+
+    If you're on DOS or NT you should run "perl.exe run_make_tests.pl ..."
+    If you're on Unix, you can continue to run "./run_make_tests ..." as
+    before.
+
+Changes from 0.4.8 to 0.4.9 (May 14, 1998):
+
+    Release by Paul D. Smith <psmith@baynetworks.com>; I'm the one to
+    blame for problems in this version :).
+
+    Add some perl to test_driver.pl to strip out GNU make clock skew
+    warning messages from the output before comparing it to the
+    known-good output.
+
+    A new test for escaped :'s in filenames (someone on VMS found this
+    didn't work anymore in 3.77): scripts/features/escape.
+
+Changes from 0.4.7 to 0.4.8 (May 14, 1998):
+
+    Release by Paul D. Smith <psmith@baynetworks.com>; I'm the one to
+    blame for problems in this version :).
+
+    New tests for features to be included in GNU make 3.77.
+
+Changes from 0.4.6 to 0.4.7 (August 18, 1997):
+
+    Release by Paul D. Smith <psmith@baynetworks.com>; I'm the one to
+    blame for problems in this version :).
+
+    Reworked some tests to make sure they all work with both perl4 and perl5.
+
+    Work around a bug in perl 5.004 which doesn't clean the environment
+    correctly in all cases (fixed in at least 5.004_02).
+
+    Updated functions/strip to test for newline stripping.
+
+    Keep a $PURIFYOPTIONS env variable if present.
+
+Changes from 0.4.5 to 0.4.6 (April 07, 1997):
+
+    Release by Paul D. Smith <psmith@baynetworks.com>; I'm the one to
+    blame for problems in this version :).
+
+    Updated to work with GNU make 3.76 (and pretests).
+
+    Added new tests and updated existing ones.  Note that the new tests
+    weren't tested with perl 4, however I think they should work.
+
+    Ignore any tests whose filenames end in "~", so that Emacs backup
+    files aren't run.
+
+Changes from 0.4.4 to 0.4.5 (April 29, 1995):
+
+    Updated to be compatible with perl 5.001 as well as 4.036.
+
+    Note: the test suite still won't work on 14-char filesystems
+    (sorry, Kaveh), but I will get to it.
+
+    Also, some tests and stuff still haven't made it in because I
+    haven't had time to write the test scripts for them.  But they,
+    too, will get in eventually.  Contributions of scripts (i.e., tests
+    that I can just drop in) are particularly welcome and will be
+    incorporated immediately.
+
+Changes from 0.4.3 to 0.4.4 (March 1995):
+
+    Updated for changes in make 3.72.12, and to ignore CVS directories
+    (thanks go to Jim Meyering for the patches for this).
+
+    Fixed uname call to not make a mess on BSD/OS 2.0 (whose uname -a
+    is very verbose).  Let me know if this doesn't work correctly on
+    your system.
+
+    Changed to display test name while it is running, not just when it
+    finishes.
+
+    Note: the test suite still won't work on 14-char filesystems
+    (sorry, Kaveh), but I will get to it.
+
+    Also, some tests and stuff still haven't made it in because I
+    haven't had time to write the test scripts for them.  But they,
+    too, will get in eventually.
+
+Changes from 0.4 to 0.4.3 (October 1994):
+
+    Fixed bugs (like dependencies on environment variables).
+
+    Caught up with changes in make.
+
+    The load_limit test should now silently ignore a failure due to
+    make not being able to read /dev/kmem.
+
+    Reorganized tests into subdirs and renamed lots of things so that
+    those poor souls who still have to deal with 14-char filename
+    limits won't hate me any more.  Thanks very much to Kaveh R. Ghazi
+    <ghazi@noc.rutgers.edu> for helping me with the implementation and
+    testing of these changes, and for putting up with all my whining
+    about it...
+
+    Added a $| = 1 so that systems that don't seem to automatically
+    flush their output for some reason will still print all the
+    output.  I'd hate for someone to miss out on the smiley that
+    you're supposed to get when all the tests pass... :-)
+
+Changes from 0.3 to 0.4 (August 1993):
+
+    Lost in the mists of time (and my hurry to get it out before I
+    left my job).
+
+Changes from 0.2 to 0.3 (9-30-92):
+
+    Several tests fixed to match the fact that MAKELEVEL > 0 or -C now
+    imply -w.
+
+    parallel_execution test fixed to not use double colon rules any
+    more since their behavior has changed.
+
+    errors_in_commands test fixed to handle different error messages
+    and return codes from rm.
+
+    Several tests fixed to handle -make_path with a relative path
+    and/or a name other than "make" for make.
+
+    dash-e-option test fixed to use $PATH instead of $USER (since the
+    latter does not exist on some System V systems).  This also
+    removes the dependency on getlogin (which fails under certain
+    weird conditions).
+
+    test_driver_core changed so that you can give a test name like
+    scripts/errors_in_commands and it will be handled correctly (handy
+    if you have a shell with filename completion).
+
+Changes from 0.1 to 0.2 (5-4-92):
+
+    README corrected to require perl 4.019, not 4.010.
+
+    -make_path replaces -old.
+
+    errors_in_commands test updated for change in format introduced in
+    make 3.62.6.
+
+    test_driver_core now uses a better way of figuring what OS it is
+    running on (thanks to meyering@cs.utexas.edu (Jim Meyering) for
+    suggesting this, as well as discovering the hard way that the old
+    way (testing for /mnt) fails on his machine).
+
+    Some new tests were added.
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1992-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/kmk/tests/README b/src/kmk/tests/README
new file mode 100644
index 0000000..0213159
--- /dev/null
+++ b/src/kmk/tests/README
@@ -0,0 +1,102 @@
+The test suite was originally written by Steve McGee and Chris Arthur.
+It is covered by the GNU General Public License (Version 2), described
+in the file COPYING.  It has been maintained as part of GNU make proper
+since GNU make 3.78.
+
+This entire test suite, including all test files, are copyright and
+distributed under the following terms:
+
+ -----------------------------------------------------------------------------
+ Copyright (C) 1992-2016 Free Software Foundation, Inc.
+ This file is part of GNU Make.
+
+ GNU Make is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3 of the License, or (at your option) any later
+ version.
+
+ GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ this program.  If not, see <http://www.gnu.org/licenses/>.
+ -----------------------------------------------------------------------------
+
+The test suite requires Perl.  These days, you should have at least Perl
+5.004 (available from ftp.gnu.org, and portable to many machines).  It
+used to work with Perl 4.036 but official support for Perl 4.x was
+abandoned a long time ago, due to lack of testbeds, as well as interest.
+
+The test suite assumes that the first "diff" it finds on your PATH is
+GNU diff, but that only matters if a test fails.
+
+To run the test suite on a UNIX system, use "perl ./run_make_tests"
+(or just "./run_make_tests" if you have a perl on your PATH).
+
+To run the test suite on Windows NT or DOS systems, use
+"perl.exe ./run_make-tests.pl".
+
+By default, the test engine picks up the first executable called "make"
+that it finds in your path.  You may use the -make_path option (i.e.,
+"perl run_make_tests -make_path /usr/local/src/make-3.78/make") if
+you want to run a particular copy.  This now works correctly with
+relative paths and when make is called something other than "make" (like
+"gmake").
+
+Tests cannot end with a "~" character, as the test suite will ignore any
+that do (I was tired of having it run my Emacs backup files as tests :))
+
+Also, sometimes the tests may behave strangely on networked
+filesystems.  You can use mkshadow to create a copy of the test suite in
+/tmp or similar, and try again.  If the error disappears, it's an issue
+with your network or file server, not GNU make (I believe).  This
+shouldn't happen very often anymore: I've done a lot of work on the
+tests to reduce the impacts of this situation.
+
+The options/dash-l test will not really test anything if the copy of
+make you are using can't obtain the system load.  Some systems require
+make to be setgid sys or kmem for this; if you don't want to install
+make just to test it, make it setgid to kmem or whatever group /dev/kmem
+is (i.e., "chgrp kmem make;chmod g+s make" as root).  In any case, the
+options/dash-l test should no longer *fail* because make can't read
+/dev/kmem.
+
+A directory named "work" will be created when the tests are run which
+will contain any makefiles and "diff" files of tests that fail so that
+you may look at them afterward to see the output of make and the
+expected result.
+
+There is a -help option which will give you more information about the
+other possible options for the test suite.
+
+
+Open Issues
+-----------
+
+The test suite has a number of problems which should be addressed.  One
+VERY serious one is that there is no real documentation.  You just have
+to see the existing tests.  Use the newer tests: many of the tests
+haven't been updated to use the latest/greatest test methods.  See the
+ChangeLog in the tests directory for pointers.
+
+The second serious problem is that it's not parallelizable: it scribbles
+all over its installation directory and so can only test one make at a
+time.  The third serious problem is that it's not relocatable: the only
+way it works when you build out of the source tree is to create
+symlinks, which doesn't work on every system and is bogus to boot.  The
+fourth serious problem is that it doesn't create its own sandbox when
+running tests, so that if a test forgets to clean up after itself that
+can impact future tests.
+
+
+Bugs
+----
+
+Any complaints/suggestions/bugs/etc. for the test suite itself (as
+opposed to problems in make that the suite finds) should be handled the
+same way as normal GNU make bugs/problems (see the README for GNU make).
+
+
+                                                Paul D. Smith
+						Chris Arthur
diff --git a/src/kmk/tests/config-flags.pm.in b/src/kmk/tests/config-flags.pm.in
new file mode 100644
index 0000000..29ba146
--- /dev/null
+++ b/src/kmk/tests/config-flags.pm.in
@@ -0,0 +1,19 @@
+# This is a -*-perl-*- script
+#
+# Set variables that were defined by configure, in case we need them
+# during the tests.
+
+%CONFIG_FLAGS = (
+    AM_LDFLAGS   => '@AM_LDFLAGS@',
+    AR           => '@AR@',
+    CC           => '@CC@',
+    CFLAGS       => '@CFLAGS@',
+    CPP          => '@CPP@',
+    CPPFLAGS     => '@CPPFLAGS@',
+    GUILE_CFLAGS => '@GUILE_CFLAGS@',
+    GUILE_LIBS   => '@GUILE_LIBS@',
+    LDFLAGS      => '@LDFLAGS@',
+    LIBS         => '@LIBS@'
+);
+
+1;
diff --git a/src/kmk/tests/config_flags_pm.com b/src/kmk/tests/config_flags_pm.com
new file mode 100644
index 0000000..a4271b6
--- /dev/null
+++ b/src/kmk/tests/config_flags_pm.com
@@ -0,0 +1,53 @@
+$!
+$! config_flags_pm.com  - Build config-flags.pm on VMS.
+$!
+$! Just good enough to run the self tests for now.
+$!
+$! Copyright (C) 2014-2016 Free Software Foundation, Inc.
+$! This file is part of GNU Make.
+$!
+$! GNU Make is free software; you can redistribute it and/or modify it under
+$! the terms of the GNU General Public License as published by the Free Software
+$! Foundation; either version 3 of the License, or (at your option) any later
+$! version.
+$!
+$! GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+$! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+$! FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+$! details.
+$!
+$! You should have received a copy of the GNU General Public License along with
+$! this program.  If not, see <http://www.gnu.org/licenses/>.
+$!
+$!
+$ open/read cfpm_in config-flags.pm.in
+$!
+$ outfile = "sys$disk:[]config-flags.pm"
+$!
+$ cflags = "/include=([],[.glob]"
+$!
+$ create 'outfile'
+$ open/append cfpm 'outfile'
+$!
+$cfpm_read_loop:
+$   read cfpm_in/end=cfpm_read_loop_end line_in
+$   line_in_len = f$length(line_in)
+$   if f$locate("@", line_in) .lt. line_in_len
+$   then
+$       part1 = f$element(0, "@", line_in)
+$       key = f$element(1, "@", line_in)
+$       part2 = f$element(2, "@", line_in)
+$       value = ""
+$       if key .eqs. "CC" then value = "CC"
+$       if key .eqs. "CPP" then value = "CPP"
+$       if key .eqs. "CFLAGS" then value = cflags
+$       if key .eqs. "GUILE_CFLAGS" then value = cflags
+$       write cfpm part1, value, part2
+$       goto cfpm_read_loop
+$   endif
+$   write cfpm line_in
+$   goto cfpm_read_loop
+$cfpm_read_loop_end:
+$ close cfpm_in
+$ close cfpm
+$!
diff --git a/src/kmk/tests/guile.supp b/src/kmk/tests/guile.supp
new file mode 100644
index 0000000..9e9b01b
--- /dev/null
+++ b/src/kmk/tests/guile.supp
@@ -0,0 +1,31 @@
+# Guile valgrind suppression file
+# Created with Guile 1.8.7
+
+# --- Garbage collection
+{
+  guilegc
+  Memcheck:Cond
+  ...
+  fun:scm_gc_for_newcell
+}
+{
+  guilegc
+  Memcheck:Value4
+  ...
+  fun:scm_gc_for_newcell
+}
+{
+  guilegc
+  Memcheck:Value8
+  ...
+  fun:scm_gc_for_newcell
+}
+
+
+# -- scm_alloc_struct
+{
+  guileheap
+  Memcheck:Leak
+  ...
+  fun:scm_alloc_struct
+}
diff --git a/src/kmk/tests/mkshadow b/src/kmk/tests/mkshadow
new file mode 100755
index 0000000..23c7ab0
--- /dev/null
+++ b/src/kmk/tests/mkshadow
@@ -0,0 +1,57 @@
+#!/bin/sh
+#
+# Simple script to make a "shadow" test directory, using symbolic links.
+# Typically you'd put the shadow in /tmp or another local disk
+#
+# Copyright (C) 1992-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+case "$1" in
+  "") echo 'Usage: mkshadow <destdir>'; exit 1 ;;
+esac
+
+dest="$1"
+
+if [ ! -d "$dest" ]; then
+  echo "Destination directory '$dest' must exist!"
+  exit 1
+fi
+
+if [ ! -f run_make_tests ]; then
+  echo "The current directory doesn't appear to contain the test suite!"
+  exit 1
+fi
+
+suite=`pwd | sed 's%^/tmp_mnt%%'`
+name=`basename "$suite"`
+
+files=`echo *`
+
+set -e
+
+mkdir "$dest/$name"
+cd "$dest/$name"
+
+ln -s "$suite" .testdir
+
+for f in $files; do
+  ln -s .testdir/$f .
+done
+
+rm -rf work
+
+echo "Shadow test suite created in '$dest/$name'."
+exit 0
diff --git a/src/kmk/tests/run_make_tests b/src/kmk/tests/run_make_tests
new file mode 100755
index 0000000..b68b784
--- /dev/null
+++ b/src/kmk/tests/run_make_tests
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec perl $0.pl ${1+"$@"}
diff --git a/src/kmk/tests/run_make_tests.com b/src/kmk/tests/run_make_tests.com
new file mode 100644
index 0000000..de79a91
--- /dev/null
+++ b/src/kmk/tests/run_make_tests.com
@@ -0,0 +1,272 @@
+$! Test_make.com
+$!
+$! This is a wrapper for the GNU make perl test programs on VMS.
+$!
+$! Parameter "-help" for description on how to use described below.
+$!
+$! Copyright (C) 2014-2016 Free Software Foundation, Inc.
+$! This file is part of GNU Make.
+$!
+$! GNU Make is free software; you can redistribute it and/or modify it under
+$! the terms of the GNU General Public License as published by the Free Software
+$! Foundation; either version 3 of the License, or (at your option) any later
+$! version.
+$!
+$! GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+$! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+$! FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+$! details.
+$!
+$! You should have received a copy of the GNU General Public License along with
+$! this program.  If not, see <http://www.gnu.org/licenses/>.
+$!
+$!
+$! Allow more than 8 paramters with using commas as a delimiter.
+$!
+$ params = "''p1',''p2',''p3',''p4',''p5',''p6',''p7',''p8'"
+$!
+$ test_flags = ",verbose,detail,keep,usage,help,debug,"
+$ test_flags_len = f$length(test_flags)
+$ verbose_flag = ""
+$ detail_flag = ""
+$ keep_flag = ""
+$ usage_flag = ""
+$ help_flag = ""
+$ debug_flag = ""
+$!
+$ ignored_options = "profile,make,srcdir,valgrind,memcheck,massif,"
+$ ignored_option_len = f$length(ignored_options)
+$!
+$ testname = ""
+$ make :== $bin:make.exe"
+$!
+$ i = 0
+$param_loop:
+$ param = f$element(i, ",", params)
+$ i = i + 1
+$ if param .eqs. "" then goto param_loop
+$ if param .eqs. "," then goto param_loop_end
+$ param_len = f$length(param)
+$ if f$locate("/", param) .lt. param_len
+$ then
+$   if testname .nes. ""
+$   then
+$       write sys$output "Only the last test name specified will be run!"
+$   endif
+$   testname = param
+$   goto param_loop
+$ endif
+$ lc_param = f$edit(param,"LOWERCASE") - "-"
+$ if f$locate(",''lc_param',", ignored_options) .lt. ignored_option_len
+$ then
+$   write sys$output "parameter ''param' is ignored on VMS for now."
+$   goto param_loop
+$ endif
+$ if f$locate(",''lc_param',", test_flags) .lt. test_flags_len
+$ then
+$   'lc_param'_flag = "-" + lc_param
+$   goto param_loop
+$ endif
+$   write sys$output "parameter ''param' is not known to VMS."
+$ goto param_loop
+$!
+$param_loop_end:
+$!
+$no_gnv = 1
+$no_perl = 1
+$!
+$!  Find GNV 2.1.3 + manditory updates
+$!  If properly updated, the GNV$GNU logical name is present.
+$!  Updated GNV utilities have a gnv$ prefix on them.
+$   gnv_root = f$trnlnm("GNV$GNU", "LNM$SYSTEM_TABLE")
+$   if gnv_root .nes. ""
+$   then
+$       no_gnv = 0
+$       ! Check for update ar utility.
+$       new_ar = "gnv$gnu:[usr.bin]gnv$ar.exe"
+$       if f$search(new_ar) .nes. ""
+$       then
+$           ! See if a new port of ar exists.
+$           ar :== $'new_ar'
+$       else
+$           ! Fall back to legacy GNV AR wrapper.
+$           old_ar = "gnv$gnu:[bin]ar.exe"
+$           if f$search(old_ar) .nes. ""
+$           then
+$               ar :== $'old_ar'
+$           else
+$               no_gnv = 1
+$           endif
+$       endif
+$       ! Check for updated bash
+$       if no_gnv .eq. 0
+$       then
+$           new_bash = "gnv$gnu:[bin]gnv$bash.exe"
+$           if f$search(new_bash) .nes. ""
+$           then
+$               bash :== $'new_bash'
+$               sh :== $'new_bash'
+$           else
+$               no_gnv = 1
+$           endif
+$       endif
+$       ! Check for updated coreutils
+$       if no_gnv .eq. 0
+$       then
+$           new_cat = "gnv$gnu:[bin]gnv$cat.exe"
+$           if f$search(new_cat) .nes. ""
+$           then
+$               cat :== $'new_cat'
+$               cp :== $gnv$gnu:[bin]gnv$cp.exe
+$               echo :== $gnv$gnu:[bin]gnv$echo.exe
+$               false :== $gnv$gnu:[bin]gnv$false.exe
+$               true :== $gnv$gnu:[bin]gnv$true.exe
+$               touch :== $gnv$gnu:[bin]gnv$touch.exe
+$               mkdir :== $gnv$gnu:[bin]gnv$mkdir.exe
+$               rm :== $gnv$gnu:[bin]gnv$rm.exe
+$               sleep :== $gnv$gnu:[bin]gnv$sleep.exe
+$           else
+$               no_gnv = 1
+$           endif
+$       endif
+$       ! Check for updated diff utility.
+$       if no_gnv .eq. 0
+$       then
+$           new_diff = "gnv$gnu:[usr.bin]gnv$diff.exe"
+$           if f$search(new_diff) .nes. ""
+$           then
+$               ! See if a new port of diff exists.
+$               diff :== $'new_diff'
+$           else
+$               ! Fall back to legacy GNV diff
+$               old_diff = "gnv$gnu:[bin]diff.exe"
+$               if f$search(old_diff) .nes. ""
+$               then
+$                   diff :== $'old_diff'
+$               else
+$                   no_gnv = 1
+$               endif
+$           endif
+$       endif
+$   endif
+$!
+$if no_gnv
+$then
+$   write sys$output "Could not find an up to date GNV installed!"
+$   help_flag = 1
+$endif
+$!
+$! Find perl 5.18.1 or later.
+$!
+$! look in perl_root:[000000]perl_setup.com
+$ perl_root = f$trnlnm("perl_root")
+$ ! This works with known perl installed from PCSI kits.
+$ if perl_root .nes. ""
+$ then
+$   perl_ver = f$element(1, ".", perl_root)
+$   if f$locate("-", perl_ver) .lt. f$length(perl_ver)
+$   then
+$       no_perl = 0
+$   endif
+$ endif
+$ if no_perl
+$ then
+$!  look for sys$common:[perl-*]perl_setup.com
+$   perl_setup = f$search("sys$common:[perl-*]perl_setup.com")
+$   if perl_setup .eqs. ""
+$   then
+$       if gnv_root .nes. ""
+$       then
+$           gnv_device = f$parse(gnv_root,,,"DEVICE")
+$           perl_templ = "[vms$common.perl-*]perl_setup.com"
+$           perl_search = f$parse(perl_templ, gnv_device)
+$           perl_setup = f$search(perl_search)
+$       endif
+$   endif
+$   if perl_setup .nes. ""
+$   then
+$       @'perl_setup'
+$       no_perl = 0
+$   endif
+$ endif
+$!
+$ if no_perl
+$ then
+$   write sys$output "Could not find an up to date Perl installed!"
+$   help_flag = "-help"
+$ endif
+$!
+$!
+$ if help_flag .nes. ""
+$ then
+$   type sys$input
+$DECK
+This is a test script wrapper for the run_make_tests.pl script.
+
+This wrapper makes sure that the DCL symbols and logical names needed to
+run the perl script are in place.
+
+The test wrapper currently requires that the DCL symbols be global symbols.
+Those symbols will be left behind after the procedure is run.
+
+The PERL_ROOT will be set to a compatible perl if such a perl is found and
+is not the default PERL_ROOT:.  This setting will persist after the test.
+
+This wrapper should be run with the default set to the base directory
+of the make source.
+
+The HELP parameter will bring up this text and then run the help script
+for the Perl wrapper.  Not all options for the perl script have been
+implemented, such as valgrind or specifying the make path or source path.
+
+Running the wrapper script requires:
+  Perl 5.18 or later.
+  PCSI kits available from http://sourceforge.net/projects/vmsperlkit/files/
+
+  GNV 2.1.3 or later.  GNV 3.0.1 has not tested with this script.
+  Bash 4.2.47 or later.
+  Coreutils 8.21 or later.
+  http://sourceforge.net/projects/gnv/files/
+  Read before installing:
+     http://sourceforge.net/p/gnv/wiki/InstallingGNVPackages/
+  As updates for other GNV components get posted, those updates should
+  be used.
+
+$EOD
+$ endif
+$!
+$ if no_gnv .or. no_perl then exit 44
+$!
+$!
+$ default = f$environment("DEFAULT")
+$ default_dev = f$element(0, ":", default) + ":"
+$ this = f$environment("PROCEDURE")
+$ on error then goto all_error
+$ set default 'default_dev''f$parse(this,,,"DIRECTORY")'
+$!
+$! Need to make sure that the config-flags.pm exists.
+$ if f$search("config-flags.pm") .eqs. ""
+$ then
+$   @config_flags_pm.com
+$ endif
+$ define/user bin 'default_dev'[-],gnv$gnu:[bin]
+$ define/user decc$filename_unix_noversion enable
+$ define/user decc$filename_unix_report enable
+$ define/user decc$readdir_dropdotnotype enable
+$ flags = ""
+$ if verbose_flag .nes. "" then flags = verbose_flag
+$ if detail_flag .nes. "" then flags = flags + " " + detail_flag
+$ if keep_flag .nes. "" then flags = flags + " " + keep_flag
+$ if usage_flag .nes. "" then flags = flags + " " + usage_flag
+$ if help_flag .nes. "" then flags = flags + " " + help_flag
+$ if debug_flag .nes. "" then flags = flags + " " + debug_flag
+$ flags = f$edit(flags, "TRIM, COMPRESS")
+$ if testname .nes. ""
+$ then
+$   perl run_make_tests.pl "''testname'" 'flags'
+$ else
+$   perl run_make_tests.pl 'flags'
+$ endif
+$all_error:
+$ set default 'default'
+$!
diff --git a/src/kmk/tests/run_make_tests.pl b/src/kmk/tests/run_make_tests.pl
new file mode 100755
index 0000000..dfd1dda
--- /dev/null
+++ b/src/kmk/tests/run_make_tests.pl
@@ -0,0 +1,507 @@
+#!/usr/bin/env perl
+# -*-perl-*-
+
+# Test driver for the Make test suite
+
+# Usage:  run_make_tests  [testname]
+#                         [-debug]
+#                         [-help]
+#                         [-verbose]
+#                         [-keep]
+#                         [-make <make prog>]
+#                        (and others)
+
+# Copyright (C) 1992-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+%FEATURES = ();
+
+$valgrind = 0;              # invoke make with valgrind
+$valgrind_args = '';
+$memcheck_args = '--num-callers=15 --tool=memcheck --leak-check=full --suppressions=guile.supp';
+$massif_args = '--num-callers=15 --tool=massif --alloc-fn=xmalloc --alloc-fn=xcalloc --alloc-fn=xrealloc --alloc-fn=xstrdup --alloc-fn=xstrndup';
+$pure_log = undef;
+
+# The location of the GNU make source directory
+$srcdir = '';
+
+$command_string = '';
+
+$all_tests = 0;
+
+# rmdir broken in some Perls on VMS.
+if ($^O eq 'VMS')
+{
+  require VMS::Filespec;
+  VMS::Filespec->import();
+
+  sub vms_rmdir {
+    my $vms_file = vmspath($_[0]);
+    $vms_file = fileify($vms_file);
+    my $ret = unlink(vmsify($vms_file));
+    return $ret
+  };
+
+  *CORE::GLOBAL::rmdir = \&vms_rmdir;
+}
+
+require "test_driver.pl";
+require "config-flags.pm";
+
+# Some target systems might not have the POSIX module...
+$has_POSIX = eval { require "POSIX.pm" };
+
+#$SIG{INT} = sub { print STDERR "Caught a signal!\n"; die @_; };
+
+sub valid_option
+{
+   local($option) = @_;
+
+   if ($option =~ /^-make([-_]?path)?$/i) {
+       $make_path = shift @argv;
+       if (!-f $make_path) {
+           print "$option $make_path: Not found.\n";
+           exit 0;
+       }
+       return 1;
+   }
+
+   if ($option =~ /^-srcdir$/i) {
+       $srcdir = shift @argv;
+       if (! -f "$srcdir/gnumake.h") {
+           print "$option $srcdir: Not a valid GNU make source directory.\n";
+           exit 0;
+       }
+       return 1;
+   }
+
+   if ($option =~ /^-all([-_]?tests)?$/i) {
+       $all_tests = 1;
+       return 1;
+   }
+
+   if ($option =~ /^-(valgrind|memcheck)$/i) {
+       $valgrind = 1;
+       $valgrind_args = $memcheck_args;
+       return 1;
+   }
+
+   if ($option =~ /^-massif$/i) {
+       $valgrind = 1;
+       $valgrind_args = $massif_args;
+       return 1;
+   }
+
+# This doesn't work--it _should_!  Someone badly needs to fix this.
+#
+#   elsif ($option =~ /^-work([-_]?dir)?$/)
+#   {
+#      $workdir = shift @argv;
+#      return 1;
+#   }
+
+   return 0;
+}
+
+
+# This is an "all-in-one" function.  Arguments are as follows:
+#
+#  [0] (string):  The makefile to be tested.  undef means use the last one.
+#  [1] (string):  Arguments to pass to make.
+#  [2] (string):  Answer we should get back.
+#  [3] (integer): Exit code we expect.  A missing code means 0 (success)
+
+$old_makefile = undef;
+
+sub subst_make_string
+{
+    local $_ = shift;
+    $makefile and s/#MAKEFILE#/$makefile/g;
+    s/#MAKEPATH#/$mkpath/g;
+    s/#MAKE#/$make_name/g;
+    s/#PERL#/$perl_name/g;
+    s/#PWD#/$pwd/g;
+    return $_;
+}
+
+sub run_make_test
+{
+  local ($makestring, $options, $answer, $err_code, $timeout) = @_;
+  my @call = caller;
+
+  # If the user specified a makefile string, create a new makefile to contain
+  # it.  If the first value is not defined, use the last one (if there is
+  # one).
+
+  if (! defined $makestring) {
+    defined $old_makefile
+      || die "run_make_test(undef) invoked before run_make_test('...')\n";
+    $makefile = $old_makefile;
+  } else {
+    if (! defined($makefile)) {
+      $makefile = &get_tmpfile();
+    }
+
+    # Make sure it ends in a newline and substitute any special tokens.
+    $makestring && $makestring !~ /\n$/s and $makestring .= "\n";
+    $makestring = subst_make_string($makestring);
+
+    # Populate the makefile!
+    open(MAKEFILE, "> $makefile") || die "Failed to open $makefile: $!\n";
+    print MAKEFILE $makestring;
+    close(MAKEFILE) || die "Failed to write $makefile: $!\n";
+  }
+
+  # Do the same processing on $answer as we did on $makestring.
+  if (defined $answer) {
+      $answer && $answer !~ /\n$/s and $answer .= "\n";
+      $answer = subst_make_string($answer);
+  }
+
+  run_make_with_options($makefile, $options, &get_logfile(0),
+                        $err_code, $timeout, @call);
+  &compare_output($answer, &get_logfile(1));
+
+  $old_makefile = $makefile;
+  $makefile = undef;
+}
+
+# The old-fashioned way...
+sub run_make_with_options {
+  my ($filename,$options,$logname,$expected_code,$timeout,@call) = @_;
+  @call = caller unless @call;
+  local($code);
+  local($command) = $make_path;
+
+  $expected_code = 0 unless defined($expected_code);
+
+  # Reset to reflect this one test.
+  $test_passed = 1;
+
+  if ($filename) {
+    $command .= " -f $filename";
+  }
+
+  if ($options) {
+    if ($^O eq 'VMS') {
+      # Try to make sure arguments are properly quoted.
+      # This does not handle all cases.
+
+      # VMS uses double quotes instead of single quotes.
+      $options =~ s/\'/\"/g;
+
+      # If the leading quote is inside non-whitespace, then the
+      # quote must be doubled, because it will be enclosed in another
+      # set of quotes.
+      $options =~ s/(\S)(\".*\")/$1\"$2\"/g;
+
+      # Options must be quoted to preserve case if not already quoted.
+      $options =~ s/(\S+)/\"$1\"/g;
+
+      # Special fixup for embedded quotes.
+      $options =~ s/(\"\".+)\"(\s+)\"(.+\"\")/$1$2$3/g;
+
+      $options =~ s/(\A)(?:\"\")(.+)(?:\"\")/$1\"$2\"/g;
+
+      # Special fixup for misc/general4 test.
+      $options =~ s/""\@echo" "cc""/\@echo cc"/;
+      $options =~ s/"\@echo link"""/\@echo link"/;
+
+      # Remove shell escapes expected to be removed by bash
+      if ($options !~ /path=pre/) {
+        $options =~ s/\\//g;
+      }
+
+      # special fixup for options/eval
+      $options =~ s/"--eval=\$\(info" "eval/"--eval=\$\(info eval/;
+
+      print ("Options fixup = -$options-\n") if $debug;
+    }
+    $command .= " $options";
+  }
+
+  $command_string = "";
+  if (@call) {
+      $command_string = "#$call[1]:$call[2]\n";
+  }
+  $command_string .= "$command\n";
+
+  if ($valgrind) {
+    print VALGRIND "\n\nExecuting: $command\n";
+  }
+
+
+  {
+      my $old_timeout = $test_timeout;
+      $timeout and $test_timeout = $timeout;
+
+      # If valgrind is enabled, turn off the timeout check
+      $valgrind and $test_timeout = 0;
+
+      $code = &run_command_with_output($logname,$command);
+      $test_timeout = $old_timeout;
+  }
+
+  # Check to see if we have Purify errors.  If so, keep the logfile.
+  # For this to work you need to build with the Purify flag -exit-status=yes
+
+  if ($pure_log && -f $pure_log) {
+    if ($code & 0x7000) {
+      $code &= ~0x7000;
+
+      # If we have a purify log, save it
+      $tn = $pure_testname . ($num_of_logfiles ? ".$num_of_logfiles" : "");
+      print("Renaming purify log file to $tn\n") if $debug;
+      rename($pure_log, "$tn")
+        || die "Can't rename $log to $tn: $!\n";
+      ++$purify_errors;
+    } else {
+      unlink($pure_log);
+    }
+  }
+
+  if ($code != $expected_code) {
+    print "Error running $make_path (expected $expected_code; got $code): $command\n";
+    $test_passed = 0;
+    $runf = &get_runfile;
+    &create_file (&get_runfile, $command_string);
+    # If it's a SIGINT, stop here
+    if ($code & 127) {
+      print STDERR "\nCaught signal ".($code & 127)."!\n";
+      ($code & 127) == 2 and exit($code);
+    }
+    return 0;
+  }
+
+  if ($profile & $vos) {
+    system "add_profile $make_path";
+  }
+
+  return 1;
+}
+
+sub print_usage
+{
+   &print_standard_usage ("run_make_tests",
+                          "[-make MAKE_PATHNAME] [-srcdir SRCDIR] [-memcheck] [-massif]",);
+}
+
+sub print_help
+{
+   &print_standard_help (
+        "-make",
+        "\tYou may specify the pathname of the copy of make to run.",
+        "-srcdir",
+        "\tSpecify the make source directory.",
+        "-valgrind",
+        "-memcheck",
+        "\tRun the test suite under valgrind's memcheck tool.",
+        "\tChange the default valgrind args with the VALGRIND_ARGS env var.",
+        "-massif",
+        "\tRun the test suite under valgrind's massif toool.",
+        "\tChange the default valgrind args with the VALGRIND_ARGS env var."
+       );
+}
+
+sub get_this_pwd {
+  $delete_command = 'rm -f';
+  if ($has_POSIX) {
+    $__pwd = POSIX::getcwd();
+  } elsif ($vos) {
+    $delete_command = "delete_file -no_ask";
+    $__pwd = `++(current_dir)`;
+  } else {
+    # No idea... just try using pwd as a last resort.
+    chop ($__pwd = `pwd`);
+  }
+
+  return $__pwd;
+}
+
+sub set_defaults
+{
+   # $profile = 1;
+   $testee = "GNU make";
+   $make_path = "make";
+   $tmpfilesuffix = "mk";
+   $pwd = &get_this_pwd;
+}
+
+sub set_more_defaults
+{
+   local($string);
+   local($index);
+
+   # find the type of the port.  We do this up front to have a single
+   # point of change if it needs to be tweaked.
+   #
+   # This is probably not specific enough.
+   #
+   if ($osname =~ /Windows/i || $osname =~ /MINGW32/i || $osname =~ /CYGWIN_NT/i) {
+     $port_type = 'W32';
+   }
+   # Bleah, the osname is so variable on DOS.  This kind of bites.
+   # Well, as far as I can tell if we check for some text at the
+   # beginning of the line with either no spaces or a single space, then
+   # a D, then either "OS", "os", or "ev" and a space.  That should
+   # match and be pretty specific.
+   elsif ($osname =~ /^([^ ]*|[^ ]* [^ ]*)D(OS|os|ev) /) {
+     $port_type = 'DOS';
+   }
+   # Check for OS/2
+   elsif ($osname =~ m%OS/2%) {
+     $port_type = 'OS/2';
+   }
+
+   # VMS has a GNV Unix mode or a DCL mode.
+   # The SHELL environment variable should not be defined in VMS-DCL mode.
+   elsif ($osname eq 'VMS' && !defined $ENV{"SHELL"}) {
+     $port_type = 'VMS-DCL';
+   }
+   # Everything else, right now, is UNIX.  Note that we should integrate
+   # the VOS support into this as well and get rid of $vos; we'll do
+   # that next time.
+   else {
+     $port_type = 'UNIX';
+   }
+
+   # On DOS/Windows system the filesystem apparently can't track
+   # timestamps with second granularity (!!).  Change the sleep time
+   # needed to force a file to be considered "old".
+   $wtime = $port_type eq 'UNIX' ? 1 : $port_type eq 'OS/2' ? 2 : 4;
+
+   print "Port type: $port_type\n" if $debug;
+   print "Make path: $make_path\n" if $debug;
+   print "fs type  : case insensitive\n" if $debug && $case_insensitive_fs;
+
+   # Find the full pathname of Make.  For DOS systems this is more
+   # complicated, so we ask make itself.
+   if ($osname eq 'VMS') {
+     $port_type = 'VMS-DCL' unless defined $ENV{"SHELL"};
+     # On VMS pre-setup make to be found with simply 'make'.
+     $make_path = 'make';
+   } else {
+     my $mk = `sh -c 'echo "all:;\@echo \\\$(MAKE)" | $make_path -f-'`;
+     chop $mk;
+     $mk or die "FATAL ERROR: Cannot determine the value of \$(MAKE):\n
+'echo \"all:;\@echo \\\$(MAKE)\" | $make_path -f-' failed!\n";
+     $make_path = $mk;
+   }
+   print "Make\t= '$make_path'\n" if $debug;
+
+   my $redir2 = '2> /dev/null';
+   $redir2 = '' if os_name eq 'VMS';
+   $string = `$make_path -v -f /dev/null $redir2`;
+
+   $string =~ /^(GNU Make [^,\n]*)/;
+   $testee_version = "$1\n";
+
+   my $redir = '2>&1';
+   $redir = '' if os_name eq 'VMS';
+   $string = `sh -c "$make_path -f /dev/null $redir"`;
+   if ($string =~ /(.*): \*\*\* No targets\.  Stop\./) {
+     $make_name = $1;
+   }
+   else {
+     $make_path =~ /^(?:.*$pathsep)?(.+)$/;
+     $make_name = $1;
+   }
+
+   # prepend pwd if this is a relative path (ie, does not
+   # start with a slash, but contains one).  Thanks for the
+   # clue, Roland.
+
+   if (index ($make_path, ":") != 1 && index ($make_path, "/") > 0)
+   {
+      $mkpath = "$pwd$pathsep$make_path";
+   }
+   else
+   {
+      $mkpath = $make_path;
+   }
+
+   # If srcdir wasn't provided on the command line, see if the
+   # location of the make program gives us a clue.  Don't fail if not;
+   # we'll assume it's been installed into /usr/include or wherever.
+   if (! $srcdir) {
+       $make_path =~ /^(.*$pathsep)?/;
+       my $d = $1 || '../';
+       -f "${d}gnumake.h" and $srcdir = $d;
+   }
+
+   # Not with the make program, so see if we can get it out of the makefile
+   if (! $srcdir && open(MF, "< ../Makefile")) {
+       local $/ = undef;
+       $_ = <MF>;
+       close(MF);
+       /^abs_srcdir\s*=\s*(.*?)\s*$/m;
+       -f "$1/gnumake.h" and $srcdir = $1;
+   }
+
+   # Get Purify log info--if any.
+
+   if (exists $ENV{PURIFYOPTIONS}
+       && $ENV{PURIFYOPTIONS} =~ /.*-logfile=([^ ]+)/) {
+     $pure_log = $1 || '';
+     $pure_log =~ s/%v/$make_name/;
+     $purify_errors = 0;
+   }
+
+   $string = `sh -c "$make_path -j 2 -f /dev/null $redir"`;
+   if ($string =~ /not supported/) {
+     $parallel_jobs = 0;
+   }
+   else {
+     $parallel_jobs = 1;
+   }
+
+   %FEATURES = map { $_ => 1 } split /\s+/, `sh -c "echo '\\\$(info \\\$(.FEATURES))' | $make_path -f- 2>/dev/null"`;
+
+   # Set up for valgrind, if requested.
+
+   $make_command = $make_path;
+
+   if ($valgrind) {
+     my $args = $valgrind_args;
+     open(VALGRIND, "> valgrind.out")
+       || die "Cannot open valgrind.out: $!\n";
+     #  -q --leak-check=yes
+     exists $ENV{VALGRIND_ARGS} and $args = $ENV{VALGRIND_ARGS};
+     $make_path = "valgrind --log-fd=".fileno(VALGRIND)." $args $make_path";
+     # F_SETFD is 2
+     fcntl(VALGRIND, 2, 0) or die "fcntl(setfd) failed: $!\n";
+     system("echo Starting on `date` 1>&".fileno(VALGRIND));
+     print "Enabled valgrind support.\n";
+   }
+}
+
+sub setup_for_test
+{
+  $makefile = &get_tmpfile;
+  if (-f $makefile) {
+    unlink $makefile;
+  }
+
+  # Get rid of any Purify logs.
+  if ($pure_log) {
+    ($pure_testname = $testname) =~ tr,/,_,;
+    $pure_testname = "$pure_log.$pure_testname";
+    system("rm -f $pure_testname*");
+    print("Purify testfiles are: $pure_testname*\n") if $debug;
+  }
+}
+
+exit !&toplevel;
diff --git a/src/kmk/tests/scripts/features/archives b/src/kmk/tests/scripts/features/archives
new file mode 100644
index 0000000..a064dd4
--- /dev/null
+++ b/src/kmk/tests/scripts/features/archives
@@ -0,0 +1,213 @@
+#                                                              -*-mode: perl-*-
+
+$description = "Test GNU make's archive management features.";
+
+$details = "\
+This only works on systems that support it.";
+
+# If this instance of make doesn't support archives, skip it
+exists $FEATURES{archives} or return -1;
+
+# Create some .o files to work with
+if ($osname eq 'VMS') {
+  use Cwd;
+  my $pwd = getcwd;
+  # VMS AR needs real object files at this time.
+  foreach $afile ('a1', 'a2', 'a3') {
+    # Use non-standard extension to prevent implicit rules from recreating
+    # objects when the test tampers with the timestamp.
+    1 while unlink "$afile.c1";
+    1 while unlink "$afile.o";
+    open (MYFILE, ">$afile.c1");
+    print MYFILE "int $afile(void) {return 1;}\n";
+    close MYFILE;
+    system("cc $afile.c1 /object=$afile.o");
+  }
+} else {
+  utouch(-60, qw(a1.o a2.o a3.o));
+}
+
+my $ar = $CONFIG_FLAGS{AR};
+
+# Fallback if configure did not find AR, such as VMS
+# which does not run configure.
+$ar = 'ar' if $ar eq '';
+
+my $redir = '2>&1';
+$redir = '' if $osname eq 'VMS';
+
+my $arflags = 'rv';
+my $arvar = "AR=$ar";
+
+# Newer versions of binutils can be built with --enable-deterministic-archives
+# which forces all timestamps (among other things) to always be 0, defeating
+# GNU make's archive support.  See if ar supports the U option to disable it.
+unlink('libxx.a');
+$_ = `$ar U$arflags libxx.a a1.o $redir`;
+if ($? == 0) {
+    $arflags = 'Urv';
+    $arvar = "$arvar ARFLAGS=$arflags";
+}
+
+# Some versions of ar print different things on creation.  Find out.
+unlink('libxx.a');
+my $created = `$ar $arflags libxx.a a1.o $redir`;
+
+# Some versions of ar print different things on add.  Find out.
+my $add = `$ar $arflags libxx.a a2.o $redir`;
+$add =~ s/a2\.o/#OBJECT#/g;
+
+# Some versions of ar print different things on replacement.  Find out.
+my $repl = `$ar $arflags libxx.a a2.o $redir`;
+$repl =~ s/a2\.o/#OBJECT#/g;
+
+unlink('libxx.a');
+
+# Very simple
+my $answer = "$ar $arflags libxx.a a1.o\n$created";
+if ($port_type eq 'VMS-DCL') {
+  $answer = 'library /replace libxx.a a1.o';
+}
+run_make_test('all: libxx.a(a1.o)', $arvar, $answer);
+
+# Multiple .o's.  Add a new one to the existing library
+($_ = $add) =~ s/#OBJECT#/a2.o/g;
+
+$answer = "$ar $arflags libxx.a a2.o\n$_";
+if ($port_type eq 'VMS-DCL') {
+  $answer = 'library /replace libxx.a a2.o';
+}
+run_make_test('all: libxx.a(a1.o a2.o)', $arvar, $answer);
+
+# Touch one of the .o's so it's rebuilt
+if ($port_type eq 'VMS-DCL') {
+  # utouch is not changing what VMS library compare is testing for.
+  # So do a real change by regenerating the file.
+  1 while unlink('a1.o');
+  # Later time stamp than last insertion.
+  sleep(2);
+  system('cc a1.c1 /object=a1.o');
+  # Next insertion will have a later timestamp.
+  sleep(2);
+} else {
+  utouch(-40, 'a1.o');
+}
+
+($_ = $repl) =~ s/#OBJECT#/a1.o/g;
+$answer = "$ar $arflags libxx.a a1.o\n$_";
+if ($port_type eq 'VMS-DCL') {
+  $answer = 'library /replace libxx.a a1.o';
+}
+run_make_test(undef, $arvar, $answer);
+
+# Use wildcards
+$answer = "#MAKE#: Nothing to be done for 'all'.\n";
+run_make_test('all: libxx.a(*.o)', $arvar, $answer);
+
+# Touch one of the .o's so it's rebuilt
+if ($port_type eq 'VMS-DCL') {
+  # utouch is not changing what VMS library compare is testing for.
+  # So do a real change by regenerating the file.
+  1 while unlink('a1.o');
+  # Make timestamp later than last insertion.
+  sleep(2);
+  system('cc a1.c1 /object=a1.o');
+} else {
+  utouch(-30, 'a1.o');
+}
+($_ = $repl) =~ s/#OBJECT#/a1.o/g;
+$answer = "$ar $arflags libxx.a a1.o\n$_";
+if ($port_type eq 'VMS-DCL') {
+  $answer = 'library /replace libxx.a a1.o';
+}
+run_make_test(undef, $arvar, $answer);
+
+# Use both wildcards and simple names
+if ($port_type eq 'VMS-DCL') {
+  # utouch is not changing what VMS library compare is testing for.
+  # So do a real change by regenerating the file.
+  1 while unlink('a2.o');
+  sleep(2);
+  system('cc a2.c1 /object=a2.o');
+} else {
+  utouch(-50, 'a2.o');
+}
+($_ = $add) =~ s/#OBJECT#/a3.o/g;
+$_ .= "$ar $arflags libxx.a a2.o\n";
+($_ .= $repl) =~ s/#OBJECT#/a2.o/g;
+$answer = "$ar $arflags libxx.a a3.o\n$_";
+if ($port_type eq 'VMS-DCL') {
+  $answer = 'library /replace libxx.a a3.o';
+}
+
+run_make_test('all: libxx.a(a3.o *.o)', $arvar, $answer);
+
+# Check whitespace handling
+if ($port_type eq 'VMS-DCL') {
+  # utouch is not changing what VMS library compare is testing for.
+  # So do a real change by regenerating the file.
+  1 while unlink('a2.o');
+  sleep(2);
+  system('cc a2.c1 /object=a2.o');
+} else {
+  utouch(-40, 'a2.o');
+}
+($_ = $repl) =~ s/#OBJECT#/a2.o/g;
+$answer = "$ar $arflags libxx.a a2.o\n$_";
+if ($port_type eq 'VMS-DCL') {
+  $answer = 'library /replace libxx.a a2.o';
+}
+run_make_test('all: libxx.a(  a3.o    *.o     )', $arvar, $answer);
+
+rmfiles(qw(a1.c1 a2.c1 a3.c1 a1.o a2.o a3.o libxx.a));
+
+# Check non-archive targets
+# See Savannah bug #37878
+$mk_string = q!
+all: foo(bar).baz
+foo(bar).baz: ; @echo '$@'
+!;
+
+if ($port_type eq 'VMS-DCL') {
+    $mk_string =~ s/echo/write sys\$\$output/;
+    $mk_string =~ s/\'/\"/g;
+}
+run_make_test($mk_string, $arvar, "foo(bar).baz\n");
+
+# Check renaming of archive targets.
+# See Savannah bug #38442
+
+mkdir('artest', 0777);
+touch('foo.vhd');
+$mk_string = q!
+DIR = artest
+vpath % $(DIR)
+default: lib(foo)
+(%): %.vhd ; @cd $(DIR) && touch $(*F) && $(AR) $(ARFLAGS) $@ $(*F) >/dev/null 2>&1 && rm $(*F)
+.PHONY: default
+!;
+if ($port_type eq 'VMS-DCL') {
+  $mk_string =~ s#= artest#= sys\$\$disk:\[.artest\]#;
+  $mk_string =~ s#lib\(foo\)#lib.tlb\(foo\)#;
+  $mk_string =~ s#; \@cd#; pipe SET DEFAULT#;
+  $mk_string =~
+    s#touch \$\(\*F\)#touch \$\(\*F\) && library/create/text sys\$\$disk:\$\@#;
+  $mk_string =~
+    s#library#if f\$\$search(\"\$\@\") \.eqs\. \"\" then library#;
+  # VMS needs special handling for null extension
+  $mk_string =~ s#\@ \$\(\*F\)#\@ \$\(\*F\)\.#;
+  $mk_string =~ s#>/dev/null 2>&1 ##;
+}
+run_make_test($mk_string, $arvar, "");
+
+run_make_test(undef, $arvar, "#MAKE#: Nothing to be done for 'default'.\n");
+
+unlink('foo.vhd');
+if ($osname eq 'VMS') {
+  remove_directory_tree("$pwd/artest");
+} else {
+  remove_directory_tree('artest');
+}
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/features/comments b/src/kmk/tests/scripts/features/comments
new file mode 100644
index 0000000..9257955
--- /dev/null
+++ b/src/kmk/tests/scripts/features/comments
@@ -0,0 +1,35 @@
+$description = "The following test creates a makefile to test comments\n"
+              ."and comment continuation to the next line using a \n"
+              ."backslash within makefiles.";
+
+$details = "To test comments within a makefile, a semi-colon was placed \n"
+          ."after a comment was started.  This should not be reported as\n"
+          ."an error since it is within a comment.  We then continue the \n"
+          ."comment to the next line using a backslash.  To test whether\n"
+          ."the comment really continued, we place an echo command with some\n"
+          ."text on the line which should never execute since it should be \n"
+          ."within a comment\n";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE <<\EOF;
+# Test comment vs semicolon parsing and line continuation
+target: # this ; is just a comment \
+	@echo This is within a comment. 
+	@echo There should be no errors for this makefile.
+EOF
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile,"",&get_logfile);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "There should be no errors for this makefile.\n";
+
+# COMPARE RESULTS
+
+&compare_output($answer,&get_logfile(1))
diff --git a/src/kmk/tests/scripts/features/conditionals b/src/kmk/tests/scripts/features/conditionals
new file mode 100644
index 0000000..78344b9
--- /dev/null
+++ b/src/kmk/tests/scripts/features/conditionals
@@ -0,0 +1,162 @@
+#                                                                    -*-perl-*-
+$description = "Check GNU make conditionals.";
+
+$details = "Attempt various different flavors of GNU make conditionals.";
+
+run_make_test('
+arg1 = first
+arg2 = second
+arg3 = third
+arg4 = cc
+arg5 = second
+
+all:
+ifeq ($(arg1),$(arg2))
+	@echo arg1 equals arg2
+else
+	@echo arg1 NOT equal arg2
+endif
+
+ifeq \'$(arg2)\' "$(arg5)"
+	@echo arg2 equals arg5
+else
+	@echo arg2 NOT equal arg5
+endif
+
+ifneq \'$(arg3)\' \'$(arg4)\'
+	@echo arg3 NOT equal arg4
+else
+	@echo arg3 equal arg4
+endif
+
+ifndef undefined
+	@echo variable is undefined
+else
+	@echo variable undefined is defined
+endif
+ifdef arg4
+	@echo arg4 is defined
+else
+	@echo arg4 is NOT defined
+endif',
+              '',
+              'arg1 NOT equal arg2
+arg2 equals arg5
+arg3 NOT equal arg4
+variable is undefined
+arg4 is defined');
+
+
+# Test expansion of variables inside ifdef.
+
+run_make_test('
+foo = 1
+
+FOO = foo
+F = f
+
+DEF = no
+DEF2 = no
+
+ifdef $(FOO)
+DEF = yes
+endif
+
+ifdef $(F)oo
+DEF2 = yes
+endif
+
+
+DEF3 = no
+FUNC = $1
+ifdef $(call FUNC,DEF)3
+  DEF3 = yes
+endif
+
+all:; @echo DEF=$(DEF) DEF2=$(DEF2) DEF3=$(DEF3)',
+              '',
+              'DEF=yes DEF2=yes DEF3=yes');
+
+
+# Test all the different "else if..." constructs
+
+run_make_test('
+arg1 = first
+arg2 = second
+arg3 = third
+arg4 = cc
+arg5 = fifth
+
+result =
+
+ifeq ($(arg1),$(arg2))
+  result += arg1 equals arg2
+else ifeq \'$(arg2)\' "$(arg5)"
+  result += arg2 equals arg5
+else ifneq \'$(arg3)\' \'$(arg3)\'
+  result += arg3 NOT equal arg4
+else ifndef arg5
+  result += variable is undefined
+else ifdef undefined
+  result += arg4 is defined
+else
+  result += success
+endif
+
+
+all: ; @echo $(result)',
+              '',
+              'success');
+
+
+# Test some random "else if..." construct nesting
+
+run_make_test('
+arg1 = first
+arg2 = second
+arg3 = third
+arg4 = cc
+arg5 = second
+
+ifeq ($(arg1),$(arg2))
+  $(info failed 1)
+else ifeq \'$(arg2)\' "$(arg2)"
+  ifdef undefined
+    $(info failed 2)
+  else
+    $(info success)
+  endif
+else ifneq \'$(arg3)\' \'$(arg3)\'
+  $(info failed 3)
+else ifdef arg5
+  $(info failed 4)
+else ifdef undefined
+  $(info failed 5)
+else
+  $(info failed 6)
+endif
+
+.PHONY: all
+all: ; @:',
+              '',
+              'success');
+
+# SV 47960 : ensure variable assignments in non-taken legs don't cause problems
+run_make_test('
+ifneq ($(FOO),yes)
+target:
+else
+BAR = bar
+target:
+endif
+	@echo one
+',
+              '', "one\n");
+
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/features/default_names b/src/kmk/tests/scripts/features/default_names
new file mode 100644
index 0000000..2e83880
--- /dev/null
+++ b/src/kmk/tests/scripts/features/default_names
@@ -0,0 +1,44 @@
+#                                                                    -*-perl-*-
+
+$description = "This script tests to make sure that Make looks for
+default makefiles in the correct order (GNUmakefile,makefile,Makefile)";
+
+# Create a makefile called "GNUmakefile"
+$makefile = "GNUmakefile";
+
+open(MAKEFILE,"> $makefile");
+print MAKEFILE "FIRST: ; \@echo It chose GNUmakefile\n";
+close(MAKEFILE);
+
+# Create another makefile called "makefile"
+open(MAKEFILE,"> makefile");
+print MAKEFILE "SECOND: ; \@echo It chose makefile\n";
+close(MAKEFILE);
+
+# DOS/WIN32/MacOSX platforms are case-insensitive / case-preserving, so
+# Makefile is the same file as makefile.  Just test what we can here.
+
+my $case_sensitive = 0;
+if (! -f 'Makefile') {
+    # Create another makefile called "Makefile"
+    $case_sensitive = 1;
+    open(MAKEFILE,"> Makefile");
+    print MAKEFILE "THIRD: ; \@echo It chose Makefile\n";
+    close(MAKEFILE);
+}
+
+run_make_with_options("","",&get_logfile);
+compare_output("It chose GNUmakefile\n",&get_logfile(1));
+unlink($makefile);
+
+run_make_with_options("","",&get_logfile);
+compare_output("It chose makefile\n",&get_logfile(1));
+unlink("makefile");
+
+if ($case_sensitive) {
+    run_make_with_options("","",&get_logfile);
+    compare_output("It chose Makefile\n",&get_logfile(1));
+    unlink("Makefile");
+}
+
+1;
diff --git a/src/kmk/tests/scripts/features/double_colon b/src/kmk/tests/scripts/features/double_colon
new file mode 100644
index 0000000..58f126f
--- /dev/null
+++ b/src/kmk/tests/scripts/features/double_colon
@@ -0,0 +1,220 @@
+#                                                                    -*-perl-*-
+$description = "Test handling of double-colon rules.";
+
+$details = "\
+We test these features:
+
+  - Multiple commands for the same (double-colon) target
+  - Different prerequisites for targets: only out-of-date
+    ones are rebuilt.
+  - Double-colon targets that aren't the goal target.
+
+Then we do the same thing for parallel builds: double-colon
+targets should always be built serially.";
+
+# The Contents of the MAKEFILE ...
+
+open(MAKEFILE,"> $makefile");
+
+print MAKEFILE <<'EOF';
+
+all: baz
+
+foo:: f1.h ; @echo foo FIRST
+foo:: f2.h ; @echo foo SECOND
+
+bar:: ; @echo aaa; sleep 1; echo aaa done
+bar:: ; @echo bbb
+
+baz:: ; @echo aaa
+baz:: ; @echo bbb
+
+biz:: ; @echo aaa
+biz:: two ; @echo bbb
+
+two: ; @echo two
+
+f1.h f2.h: ; @echo $@
+
+d :: ; @echo ok
+d :: d ; @echo oops
+
+EOF
+
+close(MAKEFILE);
+
+# TEST 0: A simple double-colon rule that isn't the goal target.
+
+&run_make_with_options($makefile, "all", &get_logfile, 0);
+$answer = "aaa\nbbb\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST 1: As above, in parallel
+
+if ($parallel_jobs) {
+  &run_make_with_options($makefile, "-j10 all", &get_logfile, 0);
+  $answer = "aaa\nbbb\n";
+  &compare_output($answer, &get_logfile(1));
+}
+
+# TEST 2: A simple double-colon rule that is the goal target
+
+&run_make_with_options($makefile, "bar", &get_logfile, 0);
+$answer = "aaa\naaa done\nbbb\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST 3: As above, in parallel
+
+if ($parallel_jobs) {
+  &run_make_with_options($makefile, "-j10 bar", &get_logfile, 0);
+  $answer = "aaa\naaa done\nbbb\n";
+  &compare_output($answer, &get_logfile(1));
+}
+
+# TEST 4: Each double-colon rule is supposed to be run individually
+
+&utouch(-5, 'f2.h');
+&touch('foo');
+
+&run_make_with_options($makefile, "foo", &get_logfile, 0);
+$answer = "f1.h\nfoo FIRST\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST 5: Again, in parallel.
+
+if ($parallel_jobs) {
+  &run_make_with_options($makefile, "-j10 foo", &get_logfile, 0);
+  $answer = "f1.h\nfoo FIRST\n";
+  &compare_output($answer, &get_logfile(1));
+}
+
+# TEST 6: Each double-colon rule is supposed to be run individually
+
+&utouch(-5, 'f1.h');
+unlink('f2.h');
+&touch('foo');
+
+&run_make_with_options($makefile, "foo", &get_logfile, 0);
+$answer = "f2.h\nfoo SECOND\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST 7: Again, in parallel.
+
+if ($parallel_jobs) {
+  &run_make_with_options($makefile, "-j10 foo", &get_logfile, 0);
+  $answer = "f2.h\nfoo SECOND\n";
+  &compare_output($answer, &get_logfile(1));
+}
+
+# TEST 8: Test circular dependency check; PR/1671
+
+&run_make_with_options($makefile, "d", &get_logfile, 0);
+$answer = "ok\n$make_name: Circular d <- d dependency dropped.\noops\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST 8: I don't grok why this is different than the above, but it is...
+#
+# Hmm... further testing indicates this might be timing-dependent?
+#
+#if ($parallel_jobs) {
+#  &run_make_with_options($makefile, "-j10 biz", &get_logfile, 0);
+#  $answer = "aaa\ntwo\nbbb\n";
+#  &compare_output($answer, &get_logfile(1));
+#}
+
+unlink('foo','f1.h','f2.h');
+
+
+# TEST 9: make sure all rules in s double colon family get executed
+#         (Savannah bug #14334).
+#
+
+&touch('one');
+&touch('two');
+
+run_make_test('
+.PHONY: all
+all: result
+
+result:: one
+	@echo $^ >>$@
+	@echo $^
+
+result:: two
+	@echo $^ >>$@
+	@echo $^
+
+',
+'',
+'one
+two');
+
+unlink('result','one','two');
+
+# TEST 10: SV 33399 : check for proper backslash handling
+
+run_make_test('
+a\ xb :: ; @echo one
+a\ xb :: ; @echo two
+',
+              '', "one\ntwo\n");
+
+# Test 11: SV 44742 : All double-colon rules should be run in parallel build.
+
+run_make_test('result :: 01
+	@echo update
+	@touch $@
+result :: 02
+	@echo update
+	@touch $@
+result :: 03
+	@echo update
+	@touch $@
+result :: 04
+	@echo update
+	@touch $@
+result :: 05
+	@echo update
+	@touch $@
+01 02 03 04 05:
+	@touch 01 02 03 04 05
+',
+              '-j10 result', "update\nupdate\nupdate\nupdate\nupdate\n");
+
+unlink('result', '01', '02', '03', '04', '05');
+
+# Test 12: SV 44742 : Double-colon rules with parallelism
+
+run_make_test('
+root: all
+	echo root
+all::
+	echo all_one
+all:: 3
+	echo all_two
+%:
+	sleep $*
+',
+              '-rs -j2 1 2 root', "all_one\nall_two\nroot\n");
+
+# SV 47995 : Parallel double-colon rules with FORCE
+
+run_make_test('
+all:: ; @echo one
+
+all:: joe ; @echo four
+
+joe: FORCE ; touch joe-is-forced
+
+FORCE:
+',
+              '-j5', "one\ntouch joe-is-forced\nfour\n");
+
+unlink('joe-is-forced');
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/features/echoing b/src/kmk/tests/scripts/features/echoing
new file mode 100644
index 0000000..40debf5
--- /dev/null
+++ b/src/kmk/tests/scripts/features/echoing
@@ -0,0 +1,64 @@
+#                                                                    -*-perl-*-
+$description = "The following test creates a makefile to test command
+echoing.  It tests that when a command line starts with
+a '\@', the echoing of that line is suppressed.  It also
+tests the -n option which tells make to ONLY echo the
+commands and no execution happens.  In this case, even
+the commands with '\@' are printed. Lastly, it tests the
+-s flag which tells make to prevent all echoing, as if
+all commands started with a '\@'.";
+
+$details = "This test is similar to the 'clean' test except that a '\@' has
+been placed in front of the delete command line.  Four tests
+are run here.  First, make is run normally and the first echo
+command should be executed.  In this case there is no '\@' so
+we should expect make to display the command AND display the
+echoed message.  Secondly, make is run with the clean target,
+but since there is a '\@' at the beginning of the command, we
+expect no output; just the deletion of a file which we check
+for.  Third, we give the clean target again except this time
+we give make the -n option.  We now expect the command to be
+displayed but not to be executed.  In this case we need only
+to check the output since an error message would be displayed
+if it actually tried to run the delete command again and the
+file didn't exist. Lastly, we run the first test again with
+the -s option and check that make did not echo the echo
+command before printing the message.\n";
+
+$example = "EXAMPLE_FILE";
+
+touch($example);
+
+# TEST #1
+# -------
+
+run_make_test("
+all:
+\techo This makefile did not clean the dir... good
+clean:
+\t\@$delete_command $example\n",
+              '', 'echo This makefile did not clean the dir... good
+This makefile did not clean the dir... good');
+
+# TEST #2
+# -------
+
+run_make_test(undef, 'clean', '');
+if (-f $example) {
+  $test_passed = 0;
+  unlink($example);
+}
+
+# TEST #3
+# -------
+
+run_make_test(undef, '-n clean', "$delete_command $example\n");
+
+
+# TEST #4
+# -------
+
+run_make_test(undef, '-s', "This makefile did not clean the dir... good\n");
+
+
+1;
diff --git a/src/kmk/tests/scripts/features/errors b/src/kmk/tests/scripts/features/errors
new file mode 100644
index 0000000..ebd4383
--- /dev/null
+++ b/src/kmk/tests/scripts/features/errors
@@ -0,0 +1,107 @@
+#                                                                    -*-perl-*-
+
+$description = "The following tests the -i option and the '-' in front of \n"
+              ."commands to test that make ignores errors in these commands\n"
+              ."and continues processing.";
+
+$details = "This test runs two makes.  The first runs on a target with a \n"
+          ."command that has a '-' in front of it (and a command that is \n"
+          ."intended to fail) and then a delete command after that is \n"
+          ."intended to succeed.  If make ignores the failure of the first\n"
+          ."command as it is supposed to, then the second command should \n"
+          ."delete a file and this is what we check for.  The second make\n"
+          ."that is run in this test is identical except that the make \n"
+          ."command is given with the -i option instead of the '-' in \n"
+          ."front of the command.  They should run the same. ";
+
+if ($vos)
+{
+   $rm_command = "delete_file";
+}
+else
+{
+   $rm_command = "rm";
+}
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "clean:\n"
+              ."\t-$rm_command cleanit\n"
+              ."\t$rm_command foo\n"
+              ."clean2: \n"
+              ."\t$rm_command cleanit\n"
+              ."\t$rm_command foo\n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&touch("foo");
+
+unlink("cleanit");
+$cleanit_error = `sh -c "$rm_command cleanit 2>&1"`;
+chomp $cleanit_error;
+$delete_error_code = $? >> 8;
+
+# TEST #1
+# -------
+
+$answer = "$rm_command cleanit
+$cleanit_error
+$make_name: [$makefile:2: clean] Error $delete_error_code (ignored)
+$rm_command foo\n";
+
+&run_make_with_options($makefile,"",&get_logfile);
+
+# If make acted as planned, it should ignore the error from the first
+# command in the target and execute the second which deletes the file "foo"
+# This file, therefore, should not exist if the test PASSES.
+if (-f "foo") {
+  $test_passed = 0;
+}
+
+# The output for this on VOS is too hard to replicate, so we only check it
+# on unix.
+if (!$vos)
+{
+   &compare_output($answer,&get_logfile(1));
+}
+
+
+&touch("foo");
+
+# TEST #2
+# -------
+
+$answer = "$rm_command cleanit
+$cleanit_error
+$make_name: [$makefile:5: clean2] Error $delete_error_code (ignored)
+$rm_command foo\n";
+
+&run_make_with_options($makefile,"clean2 -i",&get_logfile);
+
+if (-f "foo") {
+  $test_passed = 0;
+}
+
+if (!$vos) {
+   &compare_output($answer,&get_logfile(1));
+}
+
+# Test that error line offset works
+
+run_make_test(q!
+all:
+	@echo hi
+	@echo there
+	@exit 1
+!,
+              '', "hi\nthere\n#MAKE#: *** [#MAKEFILE#:5: all] Error 1", 512);
+
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/features/escape b/src/kmk/tests/scripts/features/escape
new file mode 100644
index 0000000..5fcb023
--- /dev/null
+++ b/src/kmk/tests/scripts/features/escape
@@ -0,0 +1,74 @@
+#                                                                    -*-perl-*-
+$description = "Test various types of escaping in makefiles.";
+
+$details = "\
+Make sure that escaping of ':' works in target names.
+Make sure escaping of whitespace works in target names.
+Make sure that escaping of '#' works.
+Make sure that backslash before non-special characters are kept.";
+
+
+# TEST 1
+
+run_make_test('
+$(path)foo : ; @echo "touch ($@)"
+
+foo\ bar: ; @echo "touch ($@)"
+
+sharp: foo\#bar.ext
+foo\#bar.ext: ; @echo "foo#bar.ext = ($@)"',
+	      '',
+	      'touch (foo)');
+
+# TEST 2: This one should fail, since the ":" is unquoted.
+
+run_make_test(undef,
+	      'path=pre:',
+	      "#MAKEFILE#:2: *** target pattern contains no '%' (target 'foo').  Stop.",
+	      512);
+
+# TEST 3: This one should work, since we escape the ":".
+
+run_make_test(undef,
+	      "'path=pre\\:'",
+	      'touch (pre:foo)');
+
+# TEST 4: This one should fail, since the escape char is escaped.
+
+run_make_test(undef,
+	      "'path=pre\\\\:'",
+	      "#MAKEFILE#:2: *** target pattern contains no '%'  (target 'foo').  Stop.",
+	      512);
+
+# TEST 5: This one should work
+
+run_make_test(undef,
+	      "'foo bar'",
+	      'touch (foo bar)');
+
+# TEST 6: Test escaped comments
+
+run_make_test(undef,
+	      'sharp',
+	      'foo#bar.ext = (foo#bar.ext)');
+
+# Test escaped colons in prerequisites
+# Quoting of backslashes in q!! is kind of messy.
+# Solaris sh does not properly handle backslashes even in '' so just
+# check the output make prints, not what the shell interprets.
+run_make_test(q!
+foo: foo\\:bar foo\\\\\\:bar foo\\\\\\\\\\:bar
+foo foo\\:bar foo\\\\\\:bar foo\\\\\\\\\\:bar: ; : '$@'
+!,
+              '', ": 'foo:bar'\n: 'foo\\:bar'\n: 'foo\\\\:bar'\n: 'foo'\n");
+
+# Test backslash before non-special chars: should be kept as-is
+
+run_make_test(q!
+all: ..\foo
+.DEFAULT: ; : '$@'
+!,
+              '', ": '..\\foo'\n");
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/features/export b/src/kmk/tests/scripts/features/export
new file mode 100644
index 0000000..81bff0c
--- /dev/null
+++ b/src/kmk/tests/scripts/features/export
@@ -0,0 +1,186 @@
+#                                                                    -*-perl-*-
+$description = "Check GNU make export/unexport commands.";
+
+$details = "";
+
+# The test driver cleans out our environment for us so we don't have to worry
+# about that here.
+
+&run_make_test('
+FOO = foo
+BAR = bar
+BOZ = boz
+
+export BAZ = baz
+export BOZ
+
+BITZ = bitz
+BOTZ = botz
+
+export BITZ BOTZ
+unexport BOTZ
+
+ifdef EXPORT_ALL
+export
+endif
+
+ifdef UNEXPORT_ALL
+unexport
+endif
+
+ifdef EXPORT_ALL_PSEUDO
+.EXPORT_ALL_VARIABLES:
+endif
+
+all:
+	@echo "FOO=$(FOO) BAR=$(BAR) BAZ=$(BAZ) BOZ=$(BOZ) BITZ=$(BITZ) BOTZ=$(BOTZ)"
+	@echo "FOO=$$FOO BAR=$$BAR BAZ=$$BAZ BOZ=$$BOZ BITZ=$$BITZ BOTZ=$$BOTZ"
+',
+           '', "FOO=foo BAR=bar BAZ=baz BOZ=boz BITZ=bitz BOTZ=botz
+FOO= BAR= BAZ=baz BOZ=boz BITZ=bitz BOTZ=\n");
+
+# TEST 1: make sure vars inherited from the parent are exported
+
+$extraENV{FOO} = 1;
+
+&run_make_test(undef, '', "FOO=foo BAR=bar BAZ=baz BOZ=boz BITZ=bitz BOTZ=botz
+FOO=foo BAR= BAZ=baz BOZ=boz BITZ=bitz BOTZ=\n");
+
+# TEST 2: global export.  Explicit unexport takes precedence.
+
+run_make_test(undef, "EXPORT_ALL=1" ,
+              "FOO=foo BAR=bar BAZ=baz BOZ=boz BITZ=bitz BOTZ=botz
+FOO=foo BAR=bar BAZ=baz BOZ=boz BITZ=bitz BOTZ=\n");
+
+# TEST 3: global unexport.  Explicit export takes precedence.
+
+&run_make_test(undef, "UNEXPORT_ALL=1",
+               "FOO=foo BAR=bar BAZ=baz BOZ=boz BITZ=bitz BOTZ=botz
+FOO= BAR= BAZ=baz BOZ=boz BITZ=bitz BOTZ=\n");
+
+# TEST 4: both: in the above makefile the unexport comes last so that rules.
+
+&run_make_test(undef, "EXPORT_ALL=1 UNEXPORT_ALL=1",
+               "FOO=foo BAR=bar BAZ=baz BOZ=boz BITZ=bitz BOTZ=botz
+FOO= BAR= BAZ=baz BOZ=boz BITZ=bitz BOTZ=\n");
+
+# TEST 5: test the pseudo target.
+
+&run_make_test(undef, "EXPORT_ALL_PSEUDO=1",
+               "FOO=foo BAR=bar BAZ=baz BOZ=boz BITZ=bitz BOTZ=botz
+FOO=foo BAR=bar BAZ=baz BOZ=boz BITZ=bitz BOTZ=\n");
+
+# TEST 6: Test the expansion of variables inside export
+
+&run_make_test('
+foo = f-ok
+bar = b-ok
+
+FOO = foo
+F = f
+
+BAR = bar
+B = b
+
+export $(FOO)
+export $(B)ar
+
+all:
+	@echo foo=$(foo) bar=$(bar)
+	@echo foo=$$foo bar=$$bar
+',
+             "", "foo=f-ok bar=b-ok\nfoo=f-ok bar=b-ok\n");
+
+# TEST 7: Test the expansion of variables inside unexport
+
+&run_make_test('
+foo = f-ok
+bar = b-ok
+
+FOO = foo
+F = f
+
+BAR = bar
+B = b
+
+export foo bar
+
+unexport $(FOO)
+unexport $(B)ar
+
+all:
+	@echo foo=$(foo) bar=$(bar)
+	@echo foo=$$foo bar=$$bar
+',
+              '', "foo=f-ok bar=b-ok\nfoo= bar=\n");
+
+# TEST 7: Test exporting multiple variables on the same line
+
+&run_make_test('
+A = a
+B = b
+C = c
+D = d
+E = e
+F = f
+G = g
+H = h
+I = i
+J = j
+
+SOME = A B C
+
+export F G H I J
+
+export D E $(SOME)
+
+all: ; @echo A=$$A B=$$B C=$$C D=$$D E=$$E F=$$F G=$$G H=$$H I=$$I J=$$J
+',
+               '', "A=a B=b C=c D=d E=e F=f G=g H=h I=i J=j\n");
+
+# TEST 8: Test unexporting multiple variables on the same line
+
+@extraENV{qw(A B C D E F G H I J)} = qw(1 2 3 4 5 6 7 8 9 10);
+
+&run_make_test('
+A = a
+B = b
+C = c
+D = d
+E = e
+F = f
+G = g
+H = h
+I = i
+J = j
+
+SOME = A B C
+
+unexport F G H I J
+
+unexport D E $(SOME)
+
+all: ; @echo A=$$A B=$$B C=$$C D=$$D E=$$E F=$$F G=$$G H=$$H I=$$I J=$$J
+',
+               '', "A= B= C= D= E= F= G= H= I= J=\n");
+
+# TEST 9: Check setting a variable named "export"
+
+&run_make_test('
+export = 123
+export export
+export export = 456
+a: ; @echo "\$$(export)=$(export) / \$$export=$$export"
+',
+               '', "\$(export)=456 / \$export=456\n");
+
+# TEST 9: Check "export" as a target
+
+&run_make_test('
+a: export
+export: ; @echo "$@"
+',
+               '', "export\n");
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/features/ifcond b/src/kmk/tests/scripts/features/ifcond
new file mode 100644
index 0000000..b492e77
--- /dev/null
+++ b/src/kmk/tests/scripts/features/ifcond
@@ -0,0 +1,950 @@
+# $Id: ifcond 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# if conditionals.
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the if conditionals";
+
+$details = "...";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(if-expr 1+1,1,0),1)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - A more comprehensive, yet a bit large, test.
+   # ------------------------------------------------------
+   run_make_test('
+
+#
+# Note! The testcase are ordered by ascending operator precedence
+#       with the exception of equal and not-equal because these
+#       are kind of useful for performing tests on non-logical ops.
+#
+
+.PHONY: all
+all: ; @:
+
+#
+# Parenthesis
+#
+$(info unary operators: ( and ))
+if (1)
+else
+$(error )
+endif
+
+if ((((1))))
+else
+$(error )
+endif
+
+
+#
+# Equal and Not Equal w/ some fundamental bits thrown in.
+#
+$(info binary operators: == and !=)
+
+if 1 == 1
+else
+$(error )
+endif
+
+if 2 == 3
+$(error )
+else
+endif
+
+if 2 != 3
+else
+$(error )
+endif
+
+if a != b
+else
+$(error )
+endif
+
+if asdf == asdf
+else
+$(error )
+endif
+
+if "asdf" == asdf
+else
+$(error )
+endif
+
+if \'asdf\' == asdf
+else
+$(error )
+endif
+
+if \'asdf\' == "asdf"
+else
+$(error )
+endif
+
+if \'asdf\' == \'asdf\'
+else
+$(error )
+endif
+
+if "asdf" == "asdf"
+else
+$(error )
+endif
+
+if 0x1 == 1
+else
+$(error )
+endif
+
+if 0xfff == 4095
+else
+$(error )
+endif
+
+if 0xfff == 4095
+else
+$(error )
+endif
+
+if 0d10 == 10
+else
+$(error )
+endif
+
+if 0d10 == 10
+else
+$(error )
+endif
+
+if 0xa == 012
+else
+$(error )
+endif
+
+if 0b1110 == 016
+else
+$(error )
+endif
+
+
+#
+# Logical OR
+#
+$(info binary operator: ||)
+if 1
+else
+$(error busted)
+endif
+
+if 1 || 1
+else
+$(error )
+endif
+
+if 0 || 0
+$(error )
+else
+endif
+
+if 1 || 0
+else
+$(error )
+endif
+
+if 0 || 1
+else
+$(error )
+endif
+
+if 0 || 0 || 0 || 0 || 0 || 0 || 0
+$(error )
+else
+endif
+
+if 0 || 0 || 0 || 1 || 0 || 0 || 0
+else
+$(error )
+endif
+
+if "asdf" || 0
+else
+$(error )
+endif
+
+if 0 || "asdf"
+else
+$(error )
+endif
+
+if \'asdf\' || 0
+else
+$(error )
+endif
+
+if "" || 0
+$(error )
+endif
+if "" || 1
+else
+$(error )
+endif
+if \'\' || 0
+$(error )
+endif
+if \'\' || 1
+else
+$(error )
+endif
+
+if "" || \'\'
+$(error )
+endif
+if "1" || \'\'
+else
+$(error )
+endif
+if "1" || \'1\'
+else
+$(error )
+endif
+if "" || \'1\'
+else
+$(error )
+endif
+
+
+#
+# Logical AND
+#
+$(info binary operator: &&)
+if 1 && 1
+else
+$(error )
+endif
+if 1 && 0
+$(error )
+endif
+if 1234 && 0
+$(error )
+endif
+if 123434 && 0 && 123435 && 1
+$(error )
+endif
+
+if "" && 1
+$(error )
+endif
+if ("asdf" && 1) != 1
+$(error )
+endif
+if "1" && \'asdf\'
+else
+$(error )
+endif
+if "1" && \'asdf\' && 0
+$(error )
+endif
+
+if 0 || 1 && 0
+$(error )
+endif
+
+
+#
+# Bitwise OR
+#
+$(info binary operator: |)
+if 1 | 0
+else
+$(error )
+endif
+if 1 | 1
+else
+$(error )
+endif
+if 11234 | 343423
+else
+$(error )
+endif
+if (1|2)!=3
+$(error )
+endif
+if 1|2 != 3
+else
+$(error )
+endif
+if (1|2|4|8)!=0xf
+$(error )
+endif
+
+
+#
+# Bitwise XOR
+#
+$(info binary operator: ^)
+if 1 ^ 1
+$(error )
+endif
+
+if (2 ^ 1) != 3
+$(error )
+endif
+
+if 7 != (2 ^ 1 ^ 4)
+$(error )
+endif
+
+if (2 ^ 1 | 2) != 3
+$(error )
+endif
+
+
+#
+# Bitwise AND
+#
+$(info binary operator: &)
+if (4097 & 1) != 1
+$(error )
+endif
+if (0xfff & 0x0f0) != 0xf0
+$(error )
+endif
+if (0x1e3 & 0x100 | 3) != 0x103
+$(error )
+endif
+
+
+#
+# Greater than
+#
+$(info binary operator: >)
+if 1 > 0
+else
+$(error )
+endif
+
+if 1024 > 1023
+else
+$(error )
+endif
+
+if 999 > 1023
+$(error )
+endif
+
+if (5 > 4 | 2) != 3
+$(error )
+endif
+
+if (1 & 8 > 4) != 1
+$(error )
+endif
+
+if (8 > 4 ^ 16) != 17
+$(error )
+endif
+
+if "b" > \'a\'
+else
+$(error )
+endif
+if "abcdef" > \'ffdas\'
+$(error )
+endif
+if abcdef > ffdas
+$(error )
+endif
+
+
+#
+# Greater or equal than
+#
+$(info binary operator: >=)
+if 20 > 0
+else
+$(error )
+endif
+
+if 20 >= 20
+else
+$(error )
+endif
+
+if 19 >= 20
+$(error )
+endif
+
+if (1 & 8 >= 4) != 1
+$(error )
+endif
+
+if "x" >= \'x\'
+else
+$(error )
+endif
+if "abdc" >= \'abcd\'
+else
+$(error )
+endif
+if "ffdaaa" >= \'ffdasd\'
+$(error )
+endif
+if asdf >= asdf
+else
+$(error )
+endif
+
+
+#
+# Less than
+#
+if 1 < 1
+$(error )
+endif
+if -123 < -134
+$(error )
+endif
+if 123 <= 7777
+else
+$(error )
+endif
+
+if "b" < \'a\'
+$(error )
+endif
+if b < a
+$(error )
+endif
+if \'foobar\' < \'a$\'
+$(error )
+endif
+if hhhh < ggggg
+$(error )
+endif
+if qwerty < qwerty0
+else
+$(error )
+endif
+
+
+#
+# Less or equal than
+#
+$(info binary operator: >>)
+if 1 <= 0
+$(error )
+endif
+if 1 <= 1
+else
+$(error )
+endif
+if 123 <= 123 != 1
+$(error )
+endif
+if 560 <= 456
+$(error )
+endif
+
+if "a" <= \'a\'
+else
+$(error )
+endif
+if "abcdef" <= \'abcdef\'
+else
+$(error )
+endif
+if q12345z6 <= q12345z
+$(error )
+endif
+if QWERTY <= ABCDE
+$(error )
+endif
+
+
+#
+# Shift right
+#
+$(info binary operator: >>)
+if 1 >> 0 != 1
+$(error )
+endif
+if 1024 >> 2 != 256
+$(error )
+endif
+if 102435 >> 4 > 1234 != 1
+$(error )
+endif
+
+
+#
+# Shift left
+#
+$(info binary operator: <<)
+if 1 << 0 != 1
+$(error )
+endif
+if 1 << 1 != 2
+$(error )
+endif
+if 1 << 4 != 16
+$(error )
+endif
+if 1 << 10 != 1024
+$(error )
+endif
+if 34 << 10 != 0x8800
+$(error )
+endif
+if 1099511627776 << 21 != 2305843009213693952
+$(error )
+endif
+if 1 << 61 != 2305843009213693952
+$(error )
+endif
+
+if 2 << 60 > 123434323 != 1
+$(error )
+endif
+
+
+#
+# Subtraction
+#
+$(info binary operator: -)
+if 1-1 != 0
+$(error )
+endif
+if 1023-511 != 512
+$(error )
+endif
+if 4 - 3 << 3 != 8
+$(error )
+endif
+
+
+#
+# Addition
+#
+$(info binary operator: +)
+if 1+1 != 2
+$(error )
+endif
+if 1234+1000 != 2234
+$(error )
+endif
+if 2 + 2 << 4 != 64
+$(error )
+endif
+
+
+#
+# Modulus
+#
+$(info binary operator: %)
+if 0%2 != 0
+$(error )
+endif
+if 10%7 != 3
+$(error )
+endif
+if 10 + 100%70 - 3 != 37
+$(error )
+endif
+
+
+#
+# Division
+#
+$(info binary operator: /)
+if 0/1 != 0
+$(error )
+endif
+if 1000/2 != 500
+$(error )
+endif
+if 1000/2 + 4 != 504
+$(error )
+endif
+if 5 + 1000/4 != 255
+$(error )
+endif
+
+
+#
+# Multiplication
+#
+$(info binary operator: *)
+if 1*1 != 1
+$(error )
+endif
+if 10*10 != 100
+$(error )
+endif
+if 1024*64 != 65536
+$(error )
+endif
+if 10*10 - 10 != 90
+$(error )
+endif
+if 1000 - 10*10 != 900
+$(error )
+endif
+
+
+#
+# Logical NOT
+#
+$(info unary operator: !)
+if !1
+$(error )
+endif
+
+if !42 == 0
+else
+$(error )
+endif
+
+if !0 == 1
+else
+$(error )
+endif
+
+if !!0 == 0
+else
+$(error )
+endif
+
+if !0 * 123 != 123
+$(error )
+endif
+if !!!0 * 512 != 512
+$(error )
+endif
+
+
+#
+# Bitwise NOT
+#
+$(info unary operator: ~)
+if ~0xfff != 0xfffffffffffff000
+$(error )
+endif
+
+
+#
+# Pluss
+#
+$(info unary operator: +)
+if +2 != 2
+$(error )
+endif
+if 1++++++++++++2134 != 2135
+$(error )
+endif
+
+
+#
+# Minus (negation)
+#
+$(info unary operator: -)
+if --2 != 2
+$(error )
+endif
+
+if 1 - -2 != 3
+$(error )
+endif
+
+
+#
+# target
+#
+trg_deps_only: foobar
+trg_with_cmds: foobar
+	echo $@
+
+$(info unary operator: target) # This flushes stuff in read.c
+
+if target trg_with_cmds
+else
+$(error target trg_with_cmds)
+endif
+if target(trg_deps_only)
+$(error target trg_deps_only)
+endif
+if target ( foobar )
+$(error target foobar)
+endif
+
+
+#
+# defined
+#
+$(info unary operator: defined)
+var_defined := 1
+var_not_defined :=
+
+if defined var_defined
+else
+$(error )
+endif
+if defined(var_defined)
+else
+$(error )
+endif
+if defined (var_defined)
+else
+$(error )
+endif
+if !defined(var_defined)
+$(error )
+endif
+if defined (var_not_defined)
+$(error )
+endif
+
+
+#
+# bool
+#
+$(info unary operator: bool)
+if bool("Asdf") != 1
+$(error )
+endif
+if bool("") != 0
+$(error )
+endif
+
+
+#
+# bool
+#
+$(info unary operator: num)
+if num("1234") != 1235 - 1
+$(error )
+endif
+if num(\'1234\') != 1233 + 1
+$(error )
+endif
+
+
+#
+# str
+#
+$(info unary operator: str)
+if str(a < b) != 1
+$(error )
+endif
+if str(a < b) != \'1\'
+$(error )
+endif
+if str( 1 ) != "1"
+$(error )
+endif
+if str( 1 ) != "1"
+$(error )
+endif
+if str( num(0x1000) ) != "4096"
+$(error )
+endif
+if str(0x1000) != 0x1000
+$(error )
+endif
+
+
+
+#
+# Quick check of $(if-expr ) and $(expr ).
+#
+$(info $$(if-expr ,,))
+ifeq ($(if-expr 0 || 2,42,500),42)
+else
+$(error )
+endif
+ifeq ($(if-expr 5+3 == 231,42,500),42)
+$(error )
+endif
+
+$(info $$(expr ))
+ifeq ($(expr 5+3),8)
+else
+$(error expr:$(expr 5+3) expected 8)
+endif
+ifeq ($(expr 25*25),625)
+else
+$(error expr:$(expr 25*25) expected 625)
+endif
+ifeq ($(expr 100/3),3)
+$(error )
+endif
+',
+'',
+'unary operators: ( and )
+binary operators: == and !=
+binary operator: ||
+binary operator: &&
+binary operator: |
+binary operator: ^
+binary operator: &
+binary operator: >
+binary operator: >=
+binary operator: >>
+binary operator: >>
+binary operator: <<
+binary operator: -
+binary operator: +
+binary operator: %
+binary operator: /
+binary operator: *
+unary operator: !
+unary operator: ~
+unary operator: +
+unary operator: -
+unary operator: target
+unary operator: defined
+unary operator: bool
+unary operator: num
+unary operator: str
+$(if-expr ,,)
+$(expr )
+');
+
+}
+
+
+   # TEST #2 - A bug.
+   # ------------------------------------------------------
+   run_make_test('
+.PHONY: all
+all: ; @:
+
+#
+# Assert sanity first on simple strings.
+#
+if abcd != "abcd"
+$(error )
+endif
+
+if \'abcd\' != abcd
+$(error )
+endif
+
+if abcd != abcd
+$(error )
+endif
+
+
+#
+# String by reference, start with a few simple cases.
+#
+STR1 = abcd
+
+if "$(STR1)" != "abcd"
+$(error )
+endif
+
+if \'$(STR1)\' == "abcd" # not expanded.
+$(error )
+endif
+
+if \'$(STR1)\' != \'$(STR1)\'
+$(error )
+endif
+
+if "$(STR1)" != "$(STR1)"
+$(error )
+endif
+
+#
+# Now for the kmk 0.1.4 bug...
+#
+if $(STR1) != "$(STR1)"
+$(error )
+endif
+
+if "$(STR1)" != $(STR1)
+$(error )
+endif
+
+if $(STR1) != $(STR1)
+$(error )
+endif
+
+#
+# And some extra for good measure.
+#
+STR2 = STR
+NUM1 = 1
+
+if $($(STR2)$(NUM1)) != "abcd"
+$(error )
+endif
+
+if "abcd" != $($(STR2)$(NUM1))
+$(error )
+endif
+
+if "abcd" != $(${STR2}$(NUM1))
+$(error )
+endif
+
+if "abcd" != ${$(STR2)$(NUM1)}
+$(error )
+endif
+
+if "abcd" != ${${STR2}${NUM1}}
+$(error )
+endif
+
+if ${${STR2}${NUM1}} != \'abcd\'
+$(error )
+endif
+
+if "${${STR2}${NUM1}}" != \'abcd\'
+$(error )
+endif
+
+
+',
+'',
+'');
+
+
+
+# Indicate that we're done.
+1;
+
+
diff --git a/src/kmk/tests/scripts/features/include b/src/kmk/tests/scripts/features/include
new file mode 100644
index 0000000..f78563f
--- /dev/null
+++ b/src/kmk/tests/scripts/features/include
@@ -0,0 +1,243 @@
+#                                     -*-mode: perl; rm-trailing-spaces: nil-*-
+
+$description = "Test various forms of the GNU make 'include' command.";
+
+$details = "\
+Test include, -include, sinclude and various regressions involving them.
+Test extra whitespace at the end of the include, multiple -includes and
+sincludes (should not give an error) and make sure that errors are reported
+for targets that were also -included.";
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE,"> $makefile");
+
+# The contents of the Makefile ...
+
+print MAKEFILE <<EOF;
+\#Extra space at the end of the following file name
+include $makefile2
+all: ; \@echo There should be no errors for this makefile.
+
+-include nonexistent.mk
+-include nonexistent.mk
+sinclude nonexistent.mk
+sinclude nonexistent-2.mk
+-include makeit.mk
+sinclude makeit.mk
+
+error: makeit.mk
+EOF
+
+close(MAKEFILE);
+
+
+open(MAKEFILE,"> $makefile2");
+
+print MAKEFILE "ANOTHER: ; \@echo This is another included makefile\n";
+
+close(MAKEFILE);
+
+# Create the answer to what should be produced by this Makefile
+&run_make_with_options($makefile, "all", &get_logfile);
+$answer = "There should be no errors for this makefile.\n";
+&compare_output($answer, &get_logfile(1));
+
+&run_make_with_options($makefile, "ANOTHER", &get_logfile);
+$answer = "This is another included makefile\n";
+&compare_output($answer, &get_logfile(1));
+
+$makefile = undef;
+
+# Try to build the "error" target; this will fail since we don't know
+# how to create makeit.mk, but we should also get a message (even though
+# the -include suppressed it during the makefile read phase, we should
+# see one during the makefile run phase).
+
+run_make_test
+  ('
+-include foo.mk
+error: foo.mk ; @echo $@
+',
+   '',
+   "#MAKE#: *** No rule to make target 'foo.mk', needed by 'error'.  Stop.\n",
+   512
+  );
+
+# Make sure that target-specific variables don't impact things.  This could
+# happen because a file record is created when a target-specific variable is
+# set.
+
+run_make_test
+  ('
+bar.mk: foo := baz
+-include bar.mk
+hello: ; @echo hello
+',
+   '',
+   "hello\n"
+  );
+
+
+# Test inheritance of dontcare flag when rebuilding makefiles.
+#
+run_make_test('
+.PHONY: all
+all: ; @:
+
+-include foo
+
+foo: bar; @:
+', '', '');
+
+
+# Make sure that we don't die when the command fails but we dontcare.
+# (Savannah bug #13216).
+#
+run_make_test('
+.PHONY: all
+all:; @:
+
+-include foo
+
+foo: bar; @:
+
+bar:; @exit 1
+', '', '');
+
+# Check include, sinclude, -include with no filenames.
+# (Savannah bug #1761).
+
+run_make_test('
+.PHONY: all
+all:; @:
+include
+-include
+sinclude', '', '');
+
+
+# Test that the diagnostics is issued even if the target has been
+# tried before with the dontcare flag (direct dependency case).
+#
+run_make_test('
+-include foo
+
+all: bar
+
+foo: baz
+bar: baz
+',
+'',
+"#MAKE#: *** No rule to make target 'baz', needed by 'bar'.  Stop.\n",
+512);
+
+# Test that the diagnostics is issued even if the target has been
+# tried before with the dontcare flag (indirect dependency case).
+#
+run_make_test('
+-include foo
+
+all: bar
+
+foo: baz
+bar: baz
+baz: end
+',
+'',
+"#MAKE#: *** No rule to make target 'end', needed by 'baz'.  Stop.\n",
+512);
+
+# Test that the diagnostics is issued even if the target has been
+# tried before with the dontcare flag (include/-include case).
+#
+run_make_test('
+include bar
+-include foo
+
+all:
+
+foo: baz
+bar: baz
+baz: end
+',
+'',
+"#MAKEFILE#:2: bar: No such file or directory
+#MAKE#: *** No rule to make target 'end', needed by 'baz'.  Stop.\n",
+512);
+
+# Test include of make-able file doesn't show an error (Savannah #102)
+run_make_test(q!
+.PHONY: default
+default:; @echo DONE
+
+inc1:; echo > $@
+include inc1
+include inc2
+inc2:; echo > $@
+!,
+              '', "echo > inc2\necho > inc1\nDONE\n");
+
+rmfiles('inc1', 'inc2');
+
+# Test include of non-make-able file does show an error (Savannah #102)
+run_make_test(q!
+.PHONY: default
+default:; @echo DONE
+
+inc1:; echo > $@
+include inc1
+include inc2
+!,
+              '', "#MAKEFILE#:7: inc2: No such file or directory\n#MAKE#: *** No rule to make target 'inc2'.  Stop.\n", 512);
+
+rmfiles('inc1');
+
+# Include same file multiple times
+
+run_make_test(q!
+default:; @echo DEFAULT
+include inc1
+inc1:; echo > $@
+include inc1
+!,
+              '', "echo > inc1\nDEFAULT\n");
+
+rmfiles('inc1');
+
+# Included file has a prerequisite that fails to build
+
+run_make_test(q!
+default:; @echo DEFAULT
+include inc1
+inc1: foo; echo > $@
+foo:; exit 1
+!,
+              '', "exit 1\n#MAKEFILE#:3: inc1: No such file or directory\n#MAKE#: *** [#MAKEFILE#:5: foo] Error 1\n", 512);
+
+rmfiles('inc1');
+
+# Included file has a prerequisite we don't know how to build
+
+run_make_test(q!
+default:; @echo DEFAULT
+include inc1
+inc1: foo; echo > $@
+!,
+              '', "#MAKEFILE#:3: inc1: No such file or directory\n#MAKE#: *** No rule to make target 'foo', needed by 'inc1'.  Stop.\n", 512);
+
+rmfiles('inc1');
+
+# include a directory
+
+if ($all_tests) {
+    # Test that include of a rebuild-able file doesn't show a warning
+    # Savannah bug #102
+    run_make_test(q!
+include foo
+foo: ; @echo foo = bar > $@
+!,
+                  '', "#MAKE#: 'foo' is up to date.\n");
+    rmfiles('foo');
+}
+
+1;
diff --git a/src/kmk/tests/scripts/features/jobserver b/src/kmk/tests/scripts/features/jobserver
new file mode 100644
index 0000000..7da4a65
--- /dev/null
+++ b/src/kmk/tests/scripts/features/jobserver
@@ -0,0 +1,107 @@
+#                                                                    -*-perl-*-
+
+$description = "Test jobserver.";
+
+$details = "These tests are ones that specifically are different when the
+jobserver feature is available.  Most -j tests are the same whether or not
+jobserver is available, and those appear in the 'parallelism' test suite.";
+
+exists $FEATURES{'jobserver'} or return -1;
+
+if (!$parallel_jobs) {
+  return -1;
+}
+
+# Shorthand
+my $np = '--no-print-directory';
+
+# Simple test of MAKEFLAGS settings
+run_make_test(q!
+SHOW = $(patsubst --jobserver-auth=%,--jobserver-auth=<auth>,$(MAKEFLAGS))
+recurse: ; @echo $@: "/$(SHOW)/"; $(MAKE) -f #MAKEFILE# all
+all:;@echo $@: "/$(SHOW)/"
+!,
+              "-j2 $np", "recurse: /-j2 --jobserver-auth=<auth> $np/\nall: /-j2 --jobserver-auth=<auth> $np/\n");
+
+# Setting parallelism with the environment
+# Command line should take precedence over the environment
+$extraENV{MAKEFLAGS} = "-j2 $np";
+run_make_test(q!
+SHOW = $(patsubst --jobserver-auth=%,--jobserver-auth=<auth>,$(MAKEFLAGS))
+recurse: ; @echo $@: "/$(SHOW)/"; $(MAKE) -f #MAKEFILE# all
+all:;@echo $@: "/$(SHOW)/"
+!,
+              '', "recurse: /-j2 --jobserver-auth=<auth> $np/\nall: /-j2 --jobserver-auth=<auth> $np/\n");
+delete $extraENV{MAKEFLAGS};
+
+# Test override of -jN
+$extraENV{MAKEFLAGS} = "-j9 $np";
+run_make_test(q!
+SHOW = $(patsubst --jobserver-auth=%,--jobserver-auth=<auth>,$(MAKEFLAGS))
+recurse: ; @echo $@: "/$(SHOW)/"; $(MAKE) -j3 -f #MAKEFILE# recurse2
+recurse2: ; @echo $@: "/$(SHOW)/"; $(MAKE) -f #MAKEFILE# all
+all:;@echo $@: "/$(SHOW)/"
+!,
+              "-j2 $np", "recurse: /-j2 --jobserver-auth=<auth> $np/\n#MAKE#[1]: warning: -jN forced in submake: disabling jobserver mode.\nrecurse2: /-j3 --jobserver-auth=<auth> $np/\nall: /-j3 --jobserver-auth=<auth> $np/\n");
+delete $extraENV{MAKEFLAGS};
+
+# Test override of -jN with -j
+run_make_test(q!
+SHOW = $(patsubst --jobserver-auth=%,--jobserver-auth=<auth>,$(MAKEFLAGS))
+recurse: ; @echo $@: "/$(SHOW)/"; $(MAKE) -j -f #MAKEFILE# recurse2
+recurse2: ; @echo $@: "/$(SHOW)/"; $(MAKE) -f #MAKEFILE# all
+all:;@echo $@: "/$(SHOW)/"
+!,
+              "-j2 $np", "recurse: /-j2 --jobserver-auth=<auth> $np/\n#MAKE#[1]: warning: -jN forced in submake: disabling jobserver mode.\nrecurse2: /-j $np/\nall: /-j $np/\n");
+
+# Don't put --jobserver-auth into a re-exec'd MAKEFLAGS.
+# We can't test this directly because there's no way a makefile can
+# show the value of MAKEFLAGS we were re-exec'd with.  We can intuit it
+# by looking for "disabling jobserver mode" warnings; we should only
+# get one from the original invocation and none from the re-exec.
+# See Savannah bug #18124
+
+unlink('inc.mk');
+
+run_make_test(q!
+-include inc.mk
+recur:
+#	@echo 'MAKEFLAGS = $(MAKEFLAGS)'
+	@rm -f inc.mk
+	@$(MAKE) -j2 -f #MAKEFILE# all
+all:
+#	@echo 'MAKEFLAGS = $(MAKEFLAGS)'
+	@echo $@
+inc.mk:
+#	@echo 'MAKEFLAGS = $(MAKEFLAGS)'
+	@echo 'FOO = bar' > $@
+!,
+              "$np -j2", "#MAKE#[1]: warning: -jN forced in submake: disabling jobserver mode.\nall\n");
+
+unlink('inc.mk');
+
+# Test recursion when make doesn't think it exists.
+# See Savannah bug #39934
+# Or Red Hat bug https://bugzilla.redhat.com/show_bug.cgi?id=885474
+
+open(MAKEFILE,"> Makefile2");
+print MAKEFILE '
+vpath %.c ../
+foo:
+';
+close(MAKEFILE);
+
+run_make_test(q!
+default: ; @ #MAKEPATH# -f Makefile2
+!,
+              "-j2 $np",
+"#MAKE#[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.
+#MAKE#[1]: Nothing to be done for 'foo'.");
+
+rmfiles('Makefile2');
+
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/features/load b/src/kmk/tests/scripts/features/load
new file mode 100644
index 0000000..2e9318d
--- /dev/null
+++ b/src/kmk/tests/scripts/features/load
@@ -0,0 +1,110 @@
+#                                                                    -*-perl-*-
+$description = "Test the load operator.";
+
+$details = "Test dynamic loading of modules.";
+
+# Don't do anything if this system doesn't support "load"
+exists $FEATURES{load} or return -1;
+
+# First build a shared object
+# Provide both a default and non-default load symbol
+
+unlink(qw(testload.c testload.so));
+
+open(my $F, '> testload.c') or die "open: testload.c: $!\n";
+print $F <<'EOF' ;
+#include <string.h>
+#include <stdio.h>
+
+#include "gnumake.h"
+
+int plugin_is_GPL_compatible;
+
+int
+testload_gmk_setup (gmk_floc *pos)
+{
+    (void)pos;
+    gmk_eval ("TESTLOAD = implicit", 0);
+    return 1;
+}
+
+int
+explicit_setup (gmk_floc *pos)
+{
+    (void)pos;
+    gmk_eval ("TESTLOAD = explicit", 0);
+    return 1;
+}
+EOF
+close($F) or die "close: testload.c: $!\n";
+
+# Make sure we can compile
+# CONFIG_FLAGS are loaded from config-flags.pm and set by configure
+
+my $sobuild = "$CONFIG_FLAGS{CC} ".($srcdir? "-I$srcdir":'')." $CONFIG_FLAGS{CPPFLAGS} $CONFIG_FLAGS{CFLAGS} -shared -fPIC $CONFIG_FLAGS{LDFLAGS} -o testload.so testload.c";
+
+my $clog = `$sobuild 2>&1`;
+if ($? != 0) {
+    $verbose and print "Failed to build testload.so:\n$sobuild\n$_";
+    return -1;
+}
+
+# TEST 1
+run_make_test(q!
+PRE := $(.LOADED)
+load testload.so
+POST := $(.LOADED)
+all: ; @echo pre=$(PRE) post=$(POST) $(TESTLOAD)
+!,
+              '--warn-undefined-variables', "pre= post=testload.so implicit\n");
+
+# TEST 2
+# Load using an explicit function
+run_make_test(q!
+PRE := $(.LOADED)
+load ./testload.so(explicit_setup)
+POST := $(.LOADED)
+all: ; @echo pre=$(PRE) post=$(POST) $(TESTLOAD)
+!,
+              '', "pre= post=testload.so explicit\n");
+
+# TEST 4
+# Check multiple loads
+run_make_test(q!
+PRE := $(.LOADED)
+load ./testload.so
+load testload.so(explicit_setup)
+POST := $(.LOADED)
+all: ; @echo pre=$(PRE) post=$(POST) $(TESTLOAD)
+!,
+              '', "pre= post=testload.so implicit\n");
+
+# TEST 5
+# Check auto-rebuild of loaded file that's out of date
+utouch(-10, 'testload.so');
+touch('testload.c');
+
+run_make_test(q!
+PRE := $(.LOADED)
+load ./testload.so
+POST := $(.LOADED)
+all: ; @echo pre=$(PRE) post=$(POST) $(TESTLOAD)
+testload.so: testload.c ; @echo "rebuilding $@"; !.$sobuild,
+              '', "rebuilding testload.so\npre= post=testload.so implicit\n");
+
+# TEST 5
+# Check auto-rebuild of loaded file when it doesn't exist
+unlink('testload.so');
+
+run_make_test(q!
+PRE := $(.LOADED)
+-load ./testload.so(explicit_setup)
+POST := $(.LOADED)
+all: ; @echo pre=$(PRE) post=$(POST) $(TESTLOAD)
+%.so: %.c ; @echo "rebuilding $@"; !.$sobuild,
+              '', "rebuilding testload.so\npre= post=testload.so explicit\n");
+
+unlink(qw(testload.c testload.so)) unless $keep;
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/features/loadapi b/src/kmk/tests/scripts/features/loadapi
new file mode 100644
index 0000000..8c824c0
--- /dev/null
+++ b/src/kmk/tests/scripts/features/loadapi
@@ -0,0 +1,116 @@
+#                                                                    -*-perl-*-
+$description = "Test the shared object load API.";
+
+$details = "Verify the different aspects of the shared object API.";
+
+# Don't do anything if this system doesn't support "load"
+exists $FEATURES{load} or return -1;
+
+# First build a shared object
+# Provide both a default and non-default load symbol
+
+unlink(qw(testapi.c testapi.so));
+
+open(my $F, '> testapi.c') or die "open: testapi.c: $!\n";
+print $F <<'EOF' ;
+#include <string.h>
+#include <stdio.h>
+
+#include "gnumake.h"
+
+int plugin_is_GPL_compatible;
+
+static char *
+test_eval (const char *buf)
+{
+    gmk_eval (buf, 0);
+    return NULL;
+}
+
+static char *
+test_expand (const char *val)
+{
+    return gmk_expand (val);
+}
+
+static char *
+test_noexpand (const char *val)
+{
+    char *str = gmk_alloc (strlen (val) + 1);
+    strcpy (str, val);
+    return str;
+}
+
+static char *
+func_test (const char *funcname, unsigned int argc, char **argv)
+{
+    char *mem;
+
+    if (strcmp (funcname, "test-expand") == 0)
+        return test_expand (argv[0]);
+
+    if (strcmp (funcname, "test-eval") == 0)
+        return test_eval (argv[0]);
+
+    if (strcmp (funcname, "test-noexpand") == 0)
+        return test_noexpand (argv[0]);
+
+    mem = gmk_alloc (sizeof ("unknown"));
+    strcpy (mem, "unknown");
+    return mem;
+}
+
+int
+testapi_gmk_setup ()
+{
+    gmk_add_function ("test-expand", func_test, 1, 1, GMK_FUNC_DEFAULT);
+    gmk_add_function ("test-noexpand", func_test, 1, 1, GMK_FUNC_NOEXPAND);
+    gmk_add_function ("test-eval", func_test, 1, 1, GMK_FUNC_DEFAULT);
+    gmk_add_function ("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.", func_test, 0, 0, 0);
+    return 1;
+}
+EOF
+close($F) or die "close: testapi.c: $!\n";
+
+my $sobuild = "$CONFIG_FLAGS{CC} ".($srcdir? "-I$srcdir":'')." $CONFIG_FLAGS{CPPFLAGS} $CONFIG_FLAGS{CFLAGS} -shared -fPIC $CONFIG_FLAGS{LDFLAGS} -o testapi.so testapi.c";
+
+my $clog = `$sobuild 2>&1`;
+if ($? != 0) {
+    $verbose and print "Failed to build testapi.so:\n$sobuild\n$_";
+    return -1;
+}
+
+# TEST 1
+# Check the gmk_expand() function
+run_make_test(q!
+EXPAND = expansion
+all: ; @echo $(test-expand $$(EXPAND))
+load testapi.so
+!,
+              '', "expansion\n");
+
+# TEST 2
+# Check the eval operation.  Prove that the argument is expanded only once
+run_make_test(q!
+load testapi.so
+TEST = bye
+ASSIGN = VAR = $(TEST) $(shell echo there)
+$(test-eval $(value ASSIGN))
+TEST = hi
+all:;@echo '$(VAR)'
+!,
+              '', "hi there\n");
+
+# TEST 2
+# Check the no-expand capability
+run_make_test(q!
+load testapi.so
+TEST = hi
+all:;@echo '$(test-noexpand $(TEST))'
+!,
+              '', "\$(TEST)\n");
+
+unlink(qw(testapi.c testapi.so)) unless $keep;
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/features/mult_rules b/src/kmk/tests/scripts/features/mult_rules
new file mode 100644
index 0000000..e706e17
--- /dev/null
+++ b/src/kmk/tests/scripts/features/mult_rules
@@ -0,0 +1,78 @@
+$description = "\
+The following test creates a makefile to test the presence
+of multiple rules for one target.  One file can be the
+target of several rules if at most one rule has commands;
+the other rules can only have dependencies.";
+
+$details = "\
+The makefile created in this test contains two hardcoded rules
+for foo.o and bar.o.  It then gives another multiple target rule
+with the same names as above but adding more dependencies.
+Additionally, another variable extradeps is listed as a
+dependency but is defined to be null.  It can however be defined
+on the make command line as extradeps=extra.h which adds yet
+another dependency to the targets.";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE <<EOF;
+objects = foo.o bar.o
+foo.o : defs.h
+bar.o : defs.h test.h
+extradeps = 
+\$(objects) : config.h \$(extradeps) 
+\t\@echo EXTRA EXTRA
+EOF
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&touch("defs.h","test.h","config.h");
+
+if ($vos)
+{
+   $error_code = 3307;
+}
+else 
+{
+   $error_code = 512;
+}
+
+&run_make_with_options($makefile,
+                       "extradeps=extra.h",
+                       &get_logfile,
+                       $error_code);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "$make_name: *** No rule to make target 'extra.h', needed by 'foo.o'.  Stop.\n";
+
+&compare_output($answer,&get_logfile(1));
+
+
+# TEST #2
+# -------
+
+&touch("extra.h");
+
+&run_make_with_options($makefile,
+                       "extradeps=extra.h",
+                       &get_logfile,
+                       0);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "EXTRA EXTRA\n";
+
+&compare_output($answer,&get_logfile(1));
+
+unlink("defs.h","test.h","config.h","extra.h");
+
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/features/mult_targets b/src/kmk/tests/scripts/features/mult_targets
new file mode 100644
index 0000000..c8ff418
--- /dev/null
+++ b/src/kmk/tests/scripts/features/mult_targets
@@ -0,0 +1,46 @@
+$description = "The following test creates a makefile to test that a \n "
+              ."rule with multiple targets is equivalent to writing \n"
+              ."many rules, each with one target, and all identical aside\n"
+              ."from that.";
+
+$details = "A makefile is created with one rule and two targets.  Make \n"
+          ."is called twice, once for each target, and the output which \n"
+          ."contains the target name with \$@ is looked at for the changes.\n"
+          ."This test also tests the substitute function by replacing \n"
+          ."the word output with nothing in the target name giving either\n"
+          ."an output of \"I am little\" or \"I am big\"";  
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "bigoutput littleoutput: test.h\n";
+print MAKEFILE "\t\@echo I am \$(subst output,,\$@)\n";  
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&touch("test.h");
+
+&run_make_with_options($makefile,"bigoutput",&get_logfile);
+
+
+# Create the answer to what should be produced by this Makefile
+$answer = "I am big\n";
+
+&compare_output($answer,&get_logfile(1));
+
+&run_make_with_options($makefile,"littleoutput",&get_logfile);
+$answer = "I am little\n";
+&compare_output($answer,&get_logfile(1));
+
+unlink "test.h";
+
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/features/order_only b/src/kmk/tests/scripts/features/order_only
new file mode 100644
index 0000000..4ebdc2b
--- /dev/null
+++ b/src/kmk/tests/scripts/features/order_only
@@ -0,0 +1,118 @@
+#                                                                    -*-perl-*-
+$description = "Test order-only prerequisites.";
+
+$details = "\
+Create makefiles with various combinations of normal and order-only
+prerequisites and ensure they behave properly.  Test the \$| variable.";
+
+# TEST #0 -- Basics
+
+run_make_test('
+%r: | baz ; @echo $< $^ $|
+bar: foo
+foo:;@:
+baz:;@:',
+              '', "foo foo baz\n");
+
+# TEST #1 -- First try: the order-only prereqs need to be built.
+
+run_make_test(q!
+foo: bar | baz
+	@echo '$$^ = $^'
+	@echo '$$| = $|'
+	touch $@
+
+.PHONY: baz
+
+bar baz:
+	touch $@!,
+              '', "touch bar\ntouch baz\n\$^ = bar\n\$| = baz\ntouch foo\n");
+
+
+# TEST #2 -- now we do it again: baz is PHONY but foo should _NOT_ be updated
+
+run_make_test(undef, '', "touch baz\n");
+
+unlink(qw(foo bar baz));
+
+# TEST #3 -- Make sure the order-only prereq was promoted to normal.
+
+run_make_test(q!
+foo: bar | baz
+	@echo '$$^ = $^'
+	@echo '$$| = $|'
+	touch $@
+
+foo: baz
+
+.PHONY: baz
+
+bar baz:
+	touch $@!,
+              '', "touch bar\ntouch baz\n\$^ = bar baz\n\$| = \ntouch foo\n");
+
+
+# TEST #4 -- now we do it again
+
+run_make_test(undef, '', "touch baz\n\$^ = bar baz\n\$| = \ntouch foo\n");
+
+unlink(qw(foo bar baz));
+
+# Test empty normal prereqs
+
+# TEST #5 -- make sure the parser was correct.
+
+run_make_test(q!
+foo:| baz
+	@echo '$$^ = $^'
+	@echo '$$| = $|'
+	touch $@
+
+.PHONY: baz
+
+baz:
+	touch $@!,
+              '', "touch baz\n\$^ = \n\$| = baz\ntouch foo\n");
+
+# TEST #6 -- now we do it again: this time foo won't be built
+
+run_make_test(undef, '', "touch baz\n");
+
+unlink(qw(foo baz));
+
+# Test order-only in pattern rules
+
+# TEST #7 -- make sure the parser was correct.
+
+run_make_test(q!
+%.w : %.x | baz
+	@echo '$$^ = $^'
+	@echo '$$| = $|'
+	touch $@
+
+all: foo.w
+
+.PHONY: baz
+foo.x baz:
+	touch $@!,
+              '',
+              "touch foo.x\ntouch baz\n\$^ = foo.x\n\$| = baz\ntouch foo.w\n");
+
+# TEST #8 -- now we do it again: this time foo.w won't be built
+
+run_make_test(undef, '', "touch baz\n");
+
+unlink(qw(foo.w foo.x baz));
+
+# TEST #9 -- make sure that $< is set correctly in the face of order-only
+# prerequisites in pattern rules.
+
+run_make_test('
+%r: | baz ; @echo $< $^ $|
+bar: foo
+foo:;@:
+baz:;@:',
+              '', "foo foo baz\n");
+
+
+1;
diff --git a/src/kmk/tests/scripts/features/output-sync b/src/kmk/tests/scripts/features/output-sync
new file mode 100644
index 0000000..7237e65
--- /dev/null
+++ b/src/kmk/tests/scripts/features/output-sync
@@ -0,0 +1,349 @@
+#                                                                    -*-perl-*-
+
+$description = "Test --output-sync (-O) option.";
+
+$details = "Test the synchronization of output from parallel jobs.";
+
+# If we don't have output sync support, never mind.
+exists $FEATURES{'output-sync'} or return -1;
+
+# Output sync can't be tested without parallelization
+$parallel_jobs or return -1;
+
+
+if ($vos) {
+  $sleep_command = "sleep -seconds";
+}
+else {
+  $sleep_command = "sleep";
+}
+
+# The following subdirectories with Makefiles are used in several
+# of the following tests.  The model is:
+#   foo/Makefile - has a "foo" target that waits for the bar target
+#   bar/Makefile - has a "bar" target that runs immediately
+#                - has a "baz" target that waits for the foo target
+#
+# So, you start the two sub-makes in parallel and first the "bar" target is
+# built, followed by "foo", followed by "baz".  The trick is that first each
+# target prints a "start" statement, then waits (if appropriate), then prints
+# an end statement.  Thus we can tell if the -O flag is working, since
+# otherwise these statements would be mixed together.
+
+@syncfiles = ();
+
+sub output_sync_clean {
+    rmfiles('foo/Makefile', 'bar/Makefile', @syncfiles);
+    rmdir('foo');
+    rmdir('bar');
+}
+
+# We synchronize the different jobs by having them wait for a sentinel file to
+# be created, instead of relying on a certain amount of time passing.
+# Unfortunately in this test we have to sleep after we see the sync file,
+# since we also want to make the obtaining of the write synchronization lock
+# reliable.  If things are too fast, then sometimes a different job will steal
+# the output sync lock and the output is mis-ordered from what we expect.
+sub output_sync_wait {
+    return "while [ ! -f ../mksync.$_[0] ]; do :; done; rm -f ../mksync.$_[0].wait; $sleep_command 1";
+}
+sub output_sync_set {
+    return "date > ../mksync.$_[0]";
+}
+
+@syncfiles = qw(mksync.foo mksync.foo_start mksync.bar mksync.bar_start);
+
+$tmout = 30;
+
+output_sync_clean();
+mkdir('foo', 0777);
+mkdir('bar', 0777);
+
+$set_foo = output_sync_set('foo');
+$set_bar = output_sync_set('bar');
+$set_foo_start = output_sync_set('foo_start');
+$set_bar_start = output_sync_set('bar_start');
+
+$wait_foo = output_sync_wait('foo');
+$wait_bar = output_sync_wait('bar');
+$wait_foo_start = output_sync_set('foo_start');
+$wait_bar_start = output_sync_set('bar_start');
+
+open(MAKEFILE,"> foo/Makefile");
+print MAKEFILE <<EOF;
+all: foo
+
+foo: foo-base ; \@$set_foo
+
+foo-base:
+\t\@echo foo: start
+\t\@$wait_bar
+\t\@echo foo: end
+
+foo-job: foo-job-base ; \@$set_foo
+
+foo-job-base:
+\t\@$wait_bar_start
+\t\@echo foo: start
+\t\@$set_foo_start
+\t\@$wait_bar
+\t\@echo foo: end
+
+foo-fail:
+\t\@echo foo-fail: start
+\t\@$wait_bar
+\t\@echo foo-fail: end
+\t\@exit 1
+EOF
+close(MAKEFILE);
+
+open(MAKEFILE,"> bar/Makefile");
+print MAKEFILE <<EOF;
+all: bar baz
+
+bar: bar-base ; \@$set_bar
+bar-base:
+\t\@echo bar: start
+\t\@echo bar: end
+
+bar-job: bar-job-base ; \@$set_bar
+
+bar-job-base:
+\t\@echo bar: start
+\t\@$set_bar_start
+\t\@$wait_foo_start
+\t\@echo bar: end
+
+baz: baz-base
+baz-base:
+\t\@echo baz: start
+\t\@$wait_foo
+\t\@echo baz: end
+EOF
+close(MAKEFILE);
+
+# Test per-make synchronization.
+unlink(@syncfiles);
+run_make_test(qq!
+all: make-foo make-bar
+
+make-foo: ; \$(MAKE) -C foo
+
+make-bar: ; \$(MAKE) -C bar!,
+              '-j -Orecurse',
+"#MAKEPATH# -C foo
+#MAKE#[1]: Entering directory '#PWD#/foo'
+foo: start
+foo: end
+#MAKE#[1]: Leaving directory '#PWD#/foo'
+#MAKEPATH# -C bar
+#MAKE#[1]: Entering directory '#PWD#/bar'
+bar: start
+bar: end
+baz: start
+baz: end
+#MAKE#[1]: Leaving directory '#PWD#/bar'\n", 0, $tmout);
+
+# Test per-target synchronization.
+# Note we have to sleep again here after starting the foo makefile before
+# starting the bar makefile, otherwise the "entering/leaving" messages for the
+# submakes might be ordered differently than we expect.
+
+unlink(@syncfiles);
+run_make_test(qq!
+x=1
+\$xMAKEFLAGS += --no-print-directory
+
+all: make-foo make-bar
+
+make-foo: ; \$(MAKE) -C foo
+
+make-bar: ; $sleep_command 1 ; \$(MAKE) -C bar!,
+              '-j --output-sync=target',
+"#MAKEPATH# -C foo
+$sleep_command 1 ; #MAKEPATH# -C bar
+#MAKE#[1]: Entering directory '#PWD#/bar'
+bar: start
+bar: end
+#MAKE#[1]: Leaving directory '#PWD#/bar'
+#MAKE#[1]: Entering directory '#PWD#/foo'
+foo: start
+foo: end
+#MAKE#[1]: Leaving directory '#PWD#/foo'
+#MAKE#[1]: Entering directory '#PWD#/bar'
+baz: start
+baz: end
+#MAKE#[1]: Leaving directory '#PWD#/bar'\n", 0, $tmout);
+
+# Rerun but this time suppress the directory tracking
+unlink(@syncfiles);
+run_make_test(undef, '-j --output-sync=target x=',
+              "#MAKEPATH# -C foo
+$sleep_command 1 ; #MAKEPATH# -C bar
+bar: start
+bar: end
+foo: start
+foo: end
+baz: start
+baz: end\n", 0, $tmout);
+
+# Test that messages from make itself are enclosed with
+# "Entering/Leaving directory" messages.
+unlink(@syncfiles);
+run_make_test(qq!
+all: make-foo-fail make-bar-bar
+
+make-foo-fail: ; \$(MAKE) -C foo foo-fail
+
+make-bar-bar: ; $sleep_command 1 ; \$(MAKE) -C bar bar!,
+              '-j -O',
+"#MAKEPATH# -C foo foo-fail
+$sleep_command 1 ; #MAKEPATH# -C bar bar
+#MAKE#[1]: Entering directory '#PWD#/bar'
+bar: start
+bar: end
+#MAKE#[1]: Leaving directory '#PWD#/bar'
+#MAKE#[1]: Entering directory '#PWD#/foo'
+foo-fail: start
+foo-fail: end
+#MAKE#[1]: *** [Makefile:23: foo-fail] Error 1
+#MAKE#[1]: Leaving directory '#PWD#/foo'
+#MAKE#: *** [#MAKEFILE#:4: make-foo-fail] Error 2\n",
+512);
+
+# Test the per-job synchronization.
+# For this we'll have bar-job:
+#   print start, invoke bar-start, wait for foo-start, print end, print-bar-end
+# And foo-job:
+#   wait for bar-start, print foo-start, wait for bar-end, print end
+
+unlink(@syncfiles);
+run_make_test(qq!
+all: make-foo make-bar
+
+make-foo: ; \$(MAKE) -C foo foo-job
+
+make-bar: ; $sleep_command 1 ; \$(MAKE) -C bar bar-job!,
+              '-j --output-sync=line',
+"#MAKEPATH# -C foo foo-job
+$sleep_command 1 ; #MAKEPATH# -C bar bar-job
+#MAKE#[1]: Entering directory '#PWD#/foo'
+foo: start
+#MAKE#[1]: Leaving directory '#PWD#/foo'
+#MAKE#[1]: Entering directory '#PWD#/bar'
+bar: start
+#MAKE#[1]: Leaving directory '#PWD#/bar'
+#MAKE#[1]: Entering directory '#PWD#/bar'
+bar: end
+#MAKE#[1]: Leaving directory '#PWD#/bar'
+#MAKE#[1]: Entering directory '#PWD#/foo'
+foo: end
+#MAKE#[1]: Leaving directory '#PWD#/foo'\n", 0, $tmout);
+
+
+# Remove temporary directories and contents.
+output_sync_clean();
+
+# Ensure recursion doesn't mis-order or double-print output
+run_make_test(qq!
+all:
+\t\@echo foo
+\t\@+echo bar
+!,
+              '-j -Oline', "foo\nbar\n");
+
+run_make_test(undef, '-j -Otarget', "foo\nbar\n");
+
+# Ensure when make writes out command it's not misordered
+run_make_test(qq!
+all:
+\t\@echo foobar
+\ttrue
+!,
+              '-j -Oline', "foobar\ntrue\n");
+
+run_make_test(undef, '-j -Otarget', "foobar\ntrue\n");
+
+# Ensure that shell functions inside recipes write stderr to the sync file
+run_make_test(q!
+all: ; @: $(shell echo foo 1>&2)
+!,
+              '-w -Oline', "#MAKE#: Entering directory '#PWD#'\nfoo\n#MAKE#: Leaving directory '#PWD#'\n");
+
+# Ensure that output generated while parsing makefiles is synced
+# when appropriate.
+run_make_test(q!
+$(shell echo foo 1>&2)
+all: ; echo bar
+!,
+              '-s -w -Otarget', "#MAKE#: Entering directory '#PWD#'\nfoo\n#MAKE#: Leaving directory '#PWD#'\n#MAKE#: Entering directory '#PWD#'\nbar\n#MAKE#: Leaving directory '#PWD#'\n");
+
+# Test recursion
+$m1 = get_tmpfile();
+$m2 = get_tmpfile();
+
+open(M1, "> $m1");
+print M1 <<'EOF';
+$(shell echo d1 stderr 1>&2)
+$(info d1 stdout)
+all:; @:
+EOF
+close(M1);
+
+open(M2, "> $m2");
+print M2 <<'EOF';
+$(shell echo d2 stderr 1>&2)
+$(info d2 stdout)
+all:; @:
+# Force an ordering on the output
+$(shell sleep 1)
+EOF
+close(M2);
+
+run_make_test(qq!
+all: t1 t2
+t1: ; \@\$(MAKE) -f $m1
+t2: ; \@\$(MAKE) -f $m2
+!,
+              "-j -Oline", "#MAKE#[1]: Entering directory '#PWD#'\nd1 stderr\nd1 stdout\n#MAKE#[1]: Leaving directory '#PWD#'\n#MAKE#[1]: Entering directory '#PWD#'\nd2 stderr\nd2 stdout\n#MAKE#[1]: Leaving directory '#PWD#'\n");
+
+rmfiles($m1, $m2);
+
+# Ensure that output generated while parsing makefiles is synced
+# when appropriate.
+$m1 = get_tmpfile();
+
+open(M1, "> $m1");
+print M1 <<'EOF';
+$(shell echo d1 stderr 1>&2)
+$(info d1 stdout)
+$(error d1 failed)
+all:; @:
+EOF
+close(M1);
+
+run_make_test(qq!
+all: t1
+t1: ; -\@\$(MAKE) -f $m1
+!,
+              "-j -Oline", "#MAKE#[1]: Entering directory '#PWD#'\nd1 stderr\nd1 stdout\n$m1:3: *** d1 failed.  Stop.\n#MAKE#[1]: Leaving directory '#PWD#'\n#MAKE#: [#MAKEFILE#:3: t1] Error 2 (ignored)\n");
+
+rmfiles($m1);
+
+# Test $(error ...) functions in recipes
+
+run_make_test(q!
+foo: $(OBJS) ; echo $(or $(filter %.o,$^),$(error fail))
+!,
+              '-O', "#MAKEFILE#:2: *** fail.  Stop.\n", 512);
+
+# SV 47365: Make sure exec failure error messages are shown
+# Is "127" not always the same everywhere?  We may have to detect it?
+
+run_make_test(q!
+all:: ; @./foo bar baz
+!,
+              '-O', "#MAKE#: ./foo: Command not found\n#MAKE#: *** [#MAKEFILE#:2: all] Error 127\n", 512);
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/features/override b/src/kmk/tests/scripts/features/override
new file mode 100644
index 0000000..fff6c4e
--- /dev/null
+++ b/src/kmk/tests/scripts/features/override
@@ -0,0 +1,45 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the override directive on variable assignments.";
+
+$details = "";
+
+# TEST 0: Basic override
+
+run_make_test('
+X = start
+override recur = $(X)
+override simple := $(X)
+X = end
+all: ; @echo "$(recur) $(simple)"
+',
+              'recur=I simple=J', "end start\n");
+
+# TEST 1: Override with append
+
+run_make_test('
+X += X1
+override X += X2
+override Y += Y1
+Y += Y2
+all: ; @echo "$(X) $(Y)"
+',
+              '', "X1 X2 Y1\n");
+
+# TEST 2: Override with append to the command line
+
+run_make_test(undef, 'X=C Y=C', "C X2 C Y1\n");
+
+# Test override of define/endef
+
+run_make_test('
+override define foo
+@echo First comes the definition.
+@echo Then comes the override.
+endef
+all: ; $(foo)
+',
+              'foo=Hello', "First comes the definition.\nThen comes the override.\n");
+
+
+1;
diff --git a/src/kmk/tests/scripts/features/parallelism b/src/kmk/tests/scripts/features/parallelism
new file mode 100644
index 0000000..ee3846d
--- /dev/null
+++ b/src/kmk/tests/scripts/features/parallelism
@@ -0,0 +1,231 @@
+#                                                                    -*-perl-*-
+
+$description = "Test parallelism (-j) option.";
+
+
+$details = "This test creates a makefile with two double-colon default
+rules.  The first rule has a series of sleep and echo commands
+intended to run in series.  The second and third have just an
+echo statement.  When make is called in this test, it is given
+the -j option with a value of 4.  This tells make that it may
+start up to four jobs simultaneously.  In this case, since the
+first command is a sleep command, the output of the second
+and third commands will appear before the first if indeed
+make is running all of these commands in parallel.";
+
+if (!$parallel_jobs) {
+  return -1;
+}
+
+if ($vos) {
+  $sleep_command = "sleep -seconds";
+}
+else {
+  $sleep_command = "sleep";
+}
+
+
+run_make_test("
+all : def_1 def_2 def_3
+def_1 : ; \@echo ONE; $sleep_command 3 ; echo TWO
+def_2 : ; \@$sleep_command 2 ; echo THREE
+def_3 : ; \@$sleep_command 1 ; echo FOUR",
+              '-j4', "ONE\nFOUR\nTHREE\nTWO");
+
+# Test parallelism with included files.  Here we sleep/echo while
+# building the included files, to test that they are being built in
+# parallel.
+run_make_test("
+all: 1 2; \@echo success
+-include 1.inc 2.inc
+1.inc: ; \@echo ONE.inc; $sleep_command 2; echo TWO.inc; echo '1: ; \@echo ONE; $sleep_command 2; echo TWO' > \$\@
+2.inc: ; \@$sleep_command 1; echo THREE.inc; echo '2: ; \@$sleep_command 1; echo THREE' > \$\@",
+              "-j4",
+              "ONE.inc\nTHREE.inc\nTWO.inc\nONE\nTHREE\nTWO\nsuccess\n", 0, 7);
+
+rmfiles(qw(1.inc 2.inc));
+
+
+# Test parallelism with included files--this time recurse first and make
+# sure the jobserver works.
+run_make_test("
+recurse: ; \@\$(MAKE) --no-print-directory -f #MAKEFILE# INC=yes all
+all: 1 2; \@echo success
+
+INC = no
+ifeq (\$(INC),yes)
+-include 1.inc 2.inc
+endif
+
+1.inc: ; \@echo ONE.inc; $sleep_command 2; echo TWO.inc; echo '1: ; \@echo ONE; $sleep_command 2; echo TWO' > \$\@
+2.inc: ; \@$sleep_command 1; echo THREE.inc; echo '2: ; \@$sleep_command 1; echo THREE' > \$\@",
+              "-j4",
+              "ONE.inc\nTHREE.inc\nTWO.inc\nONE\nTHREE\nTWO\nsuccess\n", 0, 7);
+
+rmfiles(qw(1.inc 2.inc));
+
+# Grant Taylor reports a problem where tokens can be lost (not written back
+# to the pipe when they should be): this happened when there is a $(shell ...)
+# function in an exported recursive variable.  I added some code to check
+# for this situation and print a message if it occurred.  This test used
+# to trigger this code when I added it but no longer does after the fix.
+# We have to increase the timeout from the default (5s) on this test.
+
+run_make_test("
+export HI = \$(shell \$(\$\@.CMD))
+first.CMD = echo hi
+second.CMD = $sleep_command 4; echo hi
+
+.PHONY: all first second
+all: first second
+
+first second: ; \@echo \$\@; $sleep_command 1; echo \$\@",
+              '-j2', "first\nfirst\nsecond\nsecond", 0, 7);
+
+# Michael Matz <matz@suse.de> reported a bug where if make is running in
+# parallel without -k and two jobs die in a row, but not too close to each
+# other, then make will quit without waiting for the rest of the jobs to die.
+
+run_make_test("
+.PHONY: all fail.1 fail.2 fail.3 ok
+all: fail.1 ok fail.2 fail.3
+
+fail.1 fail.2 fail.3:
+	\@$sleep_command \$(patsubst fail.%,%,\$\@)
+	\@echo Fail
+	\@exit 1
+
+ok:
+	\@$sleep_command 4
+	\@echo Ok done",
+              '-rR -j5', (!$is_kmk) ? "Fail
+#MAKE#: *** [#MAKEFILE#:8: fail.1] Error 1
+#MAKE#: *** Waiting for unfinished jobs....
+Fail
+#MAKE#: *** [#MAKEFILE#:8: fail.2] Error 1
+Fail
+#MAKE#: *** [#MAKEFILE#:8: fail.3] Error 1
+Ok done" : 'Fail
+#MAKE#: *** [fail.1] Error 1
+The failing command:
+@exit 1
+#MAKE#: *** Waiting for unfinished jobs....
+Fail
+#MAKE#: *** [fail.2] Error 1
+The failing command:
+@exit 1
+Fail
+#MAKE#: *** [fail.3] Error 1
+The failing command:
+@exit 1
+Ok done
+#MAKE#: *** Exiting with status 2',
+             512);
+
+
+# Test for Savannah bug #15641.
+#
+run_make_test('
+.PHONY: all
+all:; @:
+
+-include foo.d
+
+foo.d: comp
+	@echo building $@
+
+comp: mod_a.o mod_b.o; @:
+
+mod_a.o mod_b.o:
+	@exit 1
+', '-j2', '');
+
+
+# TEST #9 -- Savannah bugs 3330 and 15919
+# In earlier versions of make this will either give the wrong answer, or hang.
+
+utouch(-10, 'target');
+run_make_test('target: intermed ; touch $@
+
+.INTERMEDIATE: intermed
+intermed: | phony ; touch $@
+
+.PHONY: phony
+phony: ; : phony', '-rR -j', ': phony');
+rmfiles('target');
+
+# TEST #11: Make sure -jN from MAKEFLAGS is processed even when we re-exec
+# See Savannah bug #33873
+
+$extraENV{MAKEFLAGS} = '-j4';
+
+run_make_test(q!
+things = thing1 thing2
+all: $(things)
+thing1:; @sleep 1; echo '$@ start'; sleep 2; echo '$@ end'
+thing2:; @echo '$@ start'; sleep 2; echo '$@ end'
+-include inc.mk
+inc.mk: ; @touch $@
+!,
+              '', "thing2 start\nthing1 start\nthing2 end\nthing1 end\n");
+
+delete $extraENV{MAKEFLAGS};
+rmfiles('inc.mk');
+
+# Ensure intermediate/secondary files are not pruned incorrectly.
+# See Savannah bug #30653
+
+utouch(-15, 'file2');
+utouch(-10, 'file4');
+utouch(-5,  'file1');
+
+run_make_test(q!
+.INTERMEDIATE: file3
+file4: file3 ; @mv -f $< $@
+file3: file2 ; touch $@
+file2: file1 ; @touch $@
+!,
+              '--no-print-directory -j2', "touch file3");
+
+rmfiles('file1', 'file2', 'file3', 'file4');
+
+# Make sure that all jobserver FDs are closed if we need to re-exec the
+# master copy.
+#
+# First, find the "default" file descriptors we normally use
+# Then make sure they're still used.
+#
+# Right now we don't have a way to run a makefile and capture the output
+# without checking it, so we can't really write this test.
+
+# run_make_test('
+# submake: ; @$(MAKE) --no-print-directory -f #MAKEFILE# fdprint 5>output
+
+# dependfile: ; @echo FOO=bar > $@
+
+# INCL := true
+
+# FOO=foo
+# ifeq ($(INCL),true)
+# -include dependfile
+# endif
+
+# fdprint: ; @echo $(filter --jobserver%,$(MAKEFLAGS))
+
+# recurse: ; @$(MAKE) --no-print-directory -f #MAKEFILE# submake INCL=true',
+#               '-j2 INCL=false fdprint',
+#               'bar');
+
+# rmfiles(qw(dependfile output));
+
+
+# # Do it again, this time where the include is done by the non-master make.
+# run_make_test(undef, '-j2 recurse INCL=false', 'bar');
+
+# rmfiles(qw(dependfile output));
+
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/features/patspecific_vars b/src/kmk/tests/scripts/features/patspecific_vars
new file mode 100644
index 0000000..bbeda64
--- /dev/null
+++ b/src/kmk/tests/scripts/features/patspecific_vars
@@ -0,0 +1,148 @@
+#                                                                    -*-perl-*-
+$description = "Test pattern-specific variable settings.";
+
+$details = "\
+Create a makefile containing various flavors of pattern-specific variable
+settings, override and non-override, and using various variable expansion
+rules, semicolon interference, etc.";
+
+open(MAKEFILE,"> $makefile");
+
+print MAKEFILE <<'EOF';
+all: one.x two.x three.x
+FOO = foo
+BAR = bar
+BAZ = baz
+one.x: override FOO = one
+%.x: BAR = two
+t%.x: BAR = four
+thr% : override BAZ = three
+one.x two.x three.x: ; @echo $@: $(FOO) $(BAR) $(BAZ)
+four.x: baz ; @echo $@: $(FOO) $(BAR) $(BAZ)
+baz: ; @echo $@: $(FOO) $(BAR) $(BAZ)
+
+# test matching multiple patterns
+a%: AAA = aaa
+%b: BBB = ccc
+a%: BBB += ddd
+%b: AAA ?= xxx
+%b: AAA += bbb
+.PHONY: ab
+ab: ; @echo $(AAA); echo $(BBB)
+EOF
+
+close(MAKEFILE);
+
+
+# TEST #1 -- basics
+
+&run_make_with_options($makefile, "-j1", &get_logfile);
+$answer = "one.x: one two baz\ntwo.x: foo four baz\nthree.x: foo four three\n";
+&compare_output($answer,&get_logfile(1));
+
+
+# TEST #2 -- try the override feature
+
+&run_make_with_options($makefile, "-j1 BAZ=five", &get_logfile);
+$answer = "one.x: one two five\ntwo.x: foo four five\nthree.x: foo four three\n";
+&compare_output($answer,&get_logfile(1));
+
+
+# TEST #3 -- make sure patterns are inherited properly
+
+&run_make_with_options($makefile, "-j1 four.x", &get_logfile);
+$answer = "baz: foo two baz\nfour.x: foo two baz\n";
+&compare_output($answer,&get_logfile(1));
+
+
+# TEST #4 -- test multiple patterns matching the same target
+
+&run_make_with_options($makefile, "-j1 ab", &get_logfile);
+$answer = "aaa bbb\nccc ddd\n";
+&compare_output($answer,&get_logfile(1));
+
+# TEST #5 -- test pattern-specific exported variables
+#
+run_make_test('
+/%: export foo := foo
+
+/bar:
+	@echo $(foo) $$foo
+', '-j1', 'foo foo');
+
+
+# TEST #6 -- test expansion of pattern-specific simple variables
+#
+run_make_test('
+.PHONY: all
+
+all: inherit := good $$t
+all: bar baz
+
+b%: pattern := good $$t
+
+global := original $$t
+
+
+# normal target
+#
+ifdef rec
+bar: a = global: $(global) pattern: $(pattern) inherit: $(inherit)
+else
+bar: a := global: $(global) pattern: $(pattern) inherit: $(inherit)
+endif
+
+bar: ; @echo \'normal: $a;\'
+
+
+# pattern target
+#
+ifdef rec
+%z: a = global: $(global) pattern: $(pattern) inherit: $(inherit)
+else
+%z: a := global: $(global) pattern: $(pattern) inherit: $(inherit)
+endif
+
+%z: ; @echo \'pattern: $a;\'
+
+
+global := new $$t
+',
+'-j1',
+'normal: global: original $t pattern:  inherit: ;
+pattern: global: original $t pattern:  inherit: ;');
+
+
+# TEST #7 -- test expansion of pattern-specific recursive variables
+#
+run_make_test(undef, # reuse previous makefile
+'-j1 rec=1',
+'normal: global: new $t pattern: good $t inherit: good $t;
+pattern: global: new $t pattern: good $t inherit: good $t;');
+
+# TEST #8: override in pattern-specific variables
+
+run_make_test('
+a%: override FOO += f1
+a%: FOO += f2
+ab: ; @echo "$(FOO)"
+',
+              '', "f1\n");
+
+run_make_test(undef, 'FOO=C', "C f1\n");
+
+# TEST #9: Test shortest stem selection in pattern-specific variables.
+
+run_make_test('
+%-mt.x: x := two
+%.x: x := one
+
+all: foo.x foo-mt.x
+
+foo.x: ;@echo $x
+foo-mt.x: ;@echo $x
+',
+'',
+"one\ntwo");
+
+1;
diff --git a/src/kmk/tests/scripts/features/patternrules b/src/kmk/tests/scripts/features/patternrules
new file mode 100644
index 0000000..9aa4f62
--- /dev/null
+++ b/src/kmk/tests/scripts/features/patternrules
@@ -0,0 +1,232 @@
+#                                                                    -*-perl-*-
+
+$description = "Test pattern rules.";
+
+$details = "";
+
+use Cwd;
+
+$dir = cwd;
+$dir =~ s,.*/([^/]+)$,../$1,;
+
+
+# TEST #0: Make sure that multiple patterns where the same target
+#          can be built are searched even if the first one fails
+#          to match properly.
+#
+
+run_make_test(q!
+.PHONY: all
+
+all: case.1 case.2 case.3
+
+# We can't have this, due to "Implicit Rule Search Algorithm" step 5c
+#xxx: void
+
+# 1 - existing file
+%.1: void
+	@exit 1
+%.1: #MAKEFILE#
+	@exit 0
+
+# 2 - phony
+%.2: void
+	@exit 1
+%.2: 2.phony
+	@exit 0
+.PHONY: 2.phony
+
+# 3 - implicit-phony
+%.3: void
+	@exit 1
+%.3: 3.implicit-phony
+	@exit 0
+
+3.implicit-phony:
+!, '', '');
+
+# TEST #1: make sure files that are built via implicit rules are marked
+#          as targets (Savannah bug #12202).
+#
+run_make_test('
+TARGETS := foo foo.out
+
+.PHONY: all foo.in
+
+all: $(TARGETS)
+
+%: %.in
+	@echo $@
+
+%.out: %
+	@echo $@
+
+foo.in: ; @:
+
+',
+'',
+'foo
+foo.out');
+
+
+# TEST #2: make sure intermediate files that also happened to be
+#          prerequisites are not removed (Savannah bug #12267).
+#
+run_make_test('
+$(dir)/foo.o:
+
+$(dir)/foo.y:
+	@echo $@
+
+%.c: %.y
+	touch $@
+
+%.o: %.c
+	@echo $@
+
+.PHONY: install
+install: $(dir)/foo.c
+
+',
+"dir=$dir",
+"$dir/foo.y
+touch $dir/foo.c
+$dir/foo.o");
+
+unlink("$dir/foo.c");
+
+
+# TEST #3: make sure precious flag is set properly for targets
+#          that are built via implicit rules (Savannah bug #13218).
+#
+run_make_test('
+.DELETE_ON_ERROR:
+
+.PRECIOUS: %.bar
+
+%.bar:; @touch $@ && exit 1
+
+$(dir)/foo.bar:
+
+',
+"dir=$dir",
+(!$is_kmk) ?
+"#MAKE#: *** [#MAKEFILE#:6: $dir/foo.bar] Error 1":
+"#MAKE#: *** [$dir/foo.bar] Error 1" . '
+The failing command:
+ @touch $@ && exit 1',
+512);
+
+unlink("$dir/foo.bar");
+
+
+# TEST #4: make sure targets of a matched implicit pattern rule are
+#          never considered intermediate (Savannah bug #13022).
+#
+run_make_test('
+.PHONY: all
+all: foo.c foo.o
+
+%.h %.c: %.in
+	touch $*.h
+	touch $*.c
+
+%.o: %.c %.h
+	echo $+ >$@
+
+%.o: %.c
+	@echo wrong rule
+
+foo.in:
+	touch $@
+
+',
+'-j1',
+'touch foo.in
+touch foo.h
+touch foo.c
+echo foo.c foo.h >foo.o');
+
+unlink('foo.in', 'foo.h', 'foo.c', 'foo.o');
+
+# TEST #5: make sure both prefix and suffix patterns work with multiple
+#          target patterns (Savannah bug #26593).
+#
+run_make_test('
+all: foo.s1 foo.s2 p1.foo p2.foo
+
+p1.% p2.%: %.orig
+	@echo $@
+%.s1 %.s2: %.orig
+	@echo $@
+
+.PHONY: foo.orig
+',
+              '', "foo.s1\np1.foo\n");
+
+# TEST 6: Make sure that non-target files are still eligible to be created
+# as part of implicit rule chaining.  Savannah bug #17752.
+
+run_make_test(q!
+BIN = xyz
+COPY = $(BIN).cp
+SRC = $(BIN).c
+allbroken: $(COPY) $(BIN) ; @echo ok
+$(SRC): ; @echo 'main(){}' > $@
+%.cp: % ; @cp $< $@
+% : %.c ; @cp $< $@
+clean: ; @rm -rf $(SRC) $(COPY) $(BIN)
+!,
+              '', "ok\n");
+
+unlink(qw(xyz xyz.cp xyz.c));
+
+# TEST 7: Make sure that all prereqs of all "also_make" targets get created
+# before any of the things that depend on any of them.  Savannah bug #19108.
+
+run_make_test(q!
+final: x ; @echo $@
+x: x.t1 x.t2 ; @echo $@
+x.t2: dep
+dep: ; @echo $@
+%.t1 %.t2: ; @echo $*.t1 ; echo $*.t2
+!,
+              '', "dep\nx.t1\nx.t2\nx\nfinal\n");
+
+
+# TEST 8: Verify we can remove pattern rules.  Savannah bug #18622.
+
+my @f = (qw(foo.w foo.ch));
+touch(@f);
+
+run_make_test(q!
+CWEAVE := :
+
+# Disable builtin rules
+%.tex : %.w
+%.tex : %.w %.ch
+!,
+              'foo.tex',
+              "#MAKE#: *** No rule to make target 'foo.tex'.  Stop.", 512);
+
+unlink(@f);
+
+# TEST #9: Test shortest stem selection in pattern rules.
+
+run_make_test('
+%.x: ;@echo one
+%-mt.x: ;@echo two
+
+all: foo.x foo-mt.x
+',
+'',
+"one\ntwo");
+
+1;
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/features/quoting b/src/kmk/tests/scripts/features/quoting
new file mode 100644
index 0000000..916681c
--- /dev/null
+++ b/src/kmk/tests/scripts/features/quoting
@@ -0,0 +1,32 @@
+#                                                                    -*-perl-*-
+
+$description = "The following test creates a makefile to test using \n" .
+               "quotes within makefiles.";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE <<'EOM';
+SHELL = /bin/sh
+TEXFONTS = NICEFONT
+DEFINES = -DDEFAULT_TFM_PATH=\".:$(TEXFONTS)\"
+test: ; @"echo" 'DEFINES = $(DEFINES)'
+EOM
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+
+&run_make_with_options($makefile,"",&get_logfile);
+
+
+# Create the answer to what should be produced by this Makefile
+$answer = 'DEFINES = -DDEFAULT_TFM_PATH=\".:NICEFONT\"' . "\n";
+
+# COMPARE RESULTS
+
+&compare_output($answer,&get_logfile(1));
+
+1;
diff --git a/src/kmk/tests/scripts/features/recursion b/src/kmk/tests/scripts/features/recursion
new file mode 100644
index 0000000..862b6c4
--- /dev/null
+++ b/src/kmk/tests/scripts/features/recursion
@@ -0,0 +1,55 @@
+#                                                                    -*-perl-*-
+$description = "Test recursion.";
+
+$details = "DETAILS";
+
+# Test some basic recursion.
+run_make_test('
+all:
+	$(MAKE) -f #MAKEFILE# foo
+foo:
+	@echo $(MAKE)
+	@echo MAKELEVEL = $('. (!$is_kmk ? 'MAKELEVEL' : 'KMK_LEVEL') .')
+	$(MAKE) -f #MAKEFILE# last
+last:
+	@echo $(MAKE)
+	@echo MAKELEVEL = $('. (!$is_kmk ? 'MAKELEVEL' : 'KMK_LEVEL') .')
+	@echo THE END
+',
+              ('CFLAGS=-O -w' . ($parallel_jobs ? ' -j 2' : '')),
+              ($vos
+               ? "#MAKE#: Entering directory '#PWD#'
+make 'CFLAGS=-O' -f #MAKEFILE# foo
+make CFLAGS=-O
+MAKELEVEL = 0
+make 'CFLAGS=-O' -f #MAKEFILE# last
+make CFLAGS=-O
+MAKELEVEL = 0
+THE END
+#MAKE#: Leaving directory '#PWD#'"
+               : "#MAKE#: Entering directory '#PWD#'
+#MAKEPATH# -f #MAKEFILE# foo
+#MAKE#[1]: Entering directory '#PWD#'
+#MAKEPATH#
+MAKELEVEL = 1
+#MAKEPATH# -f #MAKEFILE# last
+#MAKE#[2]: Entering directory '#PWD#'
+#MAKEPATH#
+MAKELEVEL = 2
+THE END
+#MAKE#[2]: Leaving directory '#PWD#'
+#MAKE#[1]: Leaving directory '#PWD#'
+#MAKE#: Leaving directory '#PWD#'"));
+
+
+# Test command line overrides.
+run_make_test('
+recur: all ; @$(MAKE) --no-print-directory -f #MAKEFILE# a=AA all
+all: ; @echo "MAKEOVERRIDES = $('. (!$is_kmk ? 'MAKEOVERRIDES' : 'KMK_OVERRIDES') .')"
+',
+              'a=ZZ',
+              'MAKEOVERRIDES = a=ZZ
+MAKEOVERRIDES = a=AA
+');
+
+1;
diff --git a/src/kmk/tests/scripts/features/reinvoke b/src/kmk/tests/scripts/features/reinvoke
new file mode 100644
index 0000000..eb1a349
--- /dev/null
+++ b/src/kmk/tests/scripts/features/reinvoke
@@ -0,0 +1,80 @@
+#                                                              -*-mode: perl-*-
+
+$description = "Test GNU make's auto-reinvocation feature.";
+
+$details = "\
+If the makefile or one it includes can be rebuilt then it is, and make
+is reinvoked.  We create a rule to rebuild the makefile from a temp
+file, then touch the temp file to make it newer than the makefile.";
+
+$omkfile = $makefile;
+
+&utouch(-600, 'incl.mk');
+# For some reason if we don't do this then the test fails for systems
+# with sub-second timestamps, maybe + NFS?  Not sure.
+&utouch(-1, 'incl-1.mk');
+
+run_make_test('
+all: ; @echo running rules.
+
+#MAKEFILE# incl.mk: incl-1.mk
+	@echo rebuilding $@
+	@echo >> $@
+
+include incl.mk',
+              '', "rebuilding incl.mk\nrunning rules.\n");
+
+# Make sure updating the makefile itself also works
+
+&utouch(-600, $omkfile);
+
+run_make_test(undef, '', "rebuilding #MAKEFILE#\nrunning rules.\n");
+
+&rmfiles('incl.mk', 'incl-1.mk');
+
+
+# In this test we create an included file that's out-of-date, but then
+# the rule doesn't update it.  Make shouldn't re-exec.
+
+&utouch(-600, 'b','a');
+#&utouch(-10, 'a');
+&touch('c');
+
+run_make_test('
+SHELL = /bin/sh
+
+all: ; @echo hello
+
+a : b ; echo >> $@
+
+b : c ; [ -f $@ ] || echo >> $@
+
+c: ; echo >> $@
+
+include $(F)',
+              'F=a', "[ -f b ] || echo >> b\nhello\n");
+
+# Now try with the file we're not updating being the actual file we're
+# including: this and the previous one test different parts of the code.
+
+run_make_test(undef, 'F=b', "[ -f b ] || echo >> b\nhello\n")
+
+&rmfiles('a','b','c');
+
+# Ensure command line variables are preserved properly across re-exec
+# Tests for Savannah bug #30723
+
+run_make_test('
+ifdef RECURSE
+-include foo30723
+endif
+recurse: ; @$(MAKE) -f $(MAKEFILE_LIST) RECURSE=1 test
+test: ; @echo F.O=$(F.O)
+foo30723: ; @touch $@
+',
+              '--no-print-directory F.O=bar', "F.O=bar\n");
+
+unlink('foo30723');
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/features/rule_glob b/src/kmk/tests/scripts/features/rule_glob
new file mode 100644
index 0000000..2d377e7
--- /dev/null
+++ b/src/kmk/tests/scripts/features/rule_glob
@@ -0,0 +1,37 @@
+#                                                                    -*-perl-*-
+
+$description = "Test globbing in targets and prerequisites.";
+
+$details = "";
+
+touch(qw(a.one a.two a.three));
+
+# Test wildcards in regular targets and prerequisites
+run_make_test(q{
+.PHONY: all a.one a.two a.three
+all: a.one* a.t[a-z0-9]o a.th[!q]ee
+a.o[Nn][Ee] a.t*: ; @echo $@
+},
+              '', "a.one\na.two\na.three");
+
+# Test wildcards in pattern targets and prerequisites
+run_make_test(q{
+.PHONY: all
+all: a.four
+%.four : %.t* ; @echo $@: $(sort $^)
+},
+              '', "a.four: a.three a.two");
+
+# Test wildcards in second expansion targets and prerequisites
+run_make_test(q{
+.PHONY: all
+all: a.four
+.SECONDEXPANSION:
+%.four : $$(sort %.t*) ; @echo $@: $(sort $^)
+},
+              '', "a.four: a.three a.two");
+
+unlink(qw(a.one a.two a.three));
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/features/se_explicit b/src/kmk/tests/scripts/features/se_explicit
new file mode 100644
index 0000000..ab7c26f
--- /dev/null
+++ b/src/kmk/tests/scripts/features/se_explicit
@@ -0,0 +1,169 @@
+#                                                                    -*-perl-*-
+$description = "Test second expansion in ordinary rules.";
+
+$details = "";
+
+# TEST #0: Test handing of '$' in prerequisites with and without second
+# expansion.
+# bird: Modified this test to use ${PRE} instead of $(PRE) as it failes
+#       when make is built with NO_ARCHIVES defined.
+
+# If we don't support archives then the prerequisite is different
+my $prereq = exists $FEATURES{'archives'} ? '$' : '$(PRE)';
+
+run_make_test(q!
+ifdef SE
+  .SECONDEXPANSION:
+endif
+foo$$bar: bar$$baz bar$$biz ; @echo '$@ : $^'
+PRE = one two
+bar$$baz: $${PRE}
+baraz: $${PRE}
+PRE = three four
+.DEFAULT: ; @echo '$@'
+!,
+              '',
+              "$prereq\nbar\$biz\nfoo\$bar : bar\$baz bar\$biz");
+
+run_make_test(undef, 'SE=1', "three\nfour\nbariz\nfoo\$bar : baraz bariz");
+
+# TEST #1: automatic variables.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+.DEFAULT: ; @echo '$@'
+
+foo: bar baz
+
+foo: biz | buz
+
+foo: $$@.1 \
+     $$<.2 \
+     $$(addsuffix .3,$$^) \
+     $$(addsuffix .4,$$+) \
+     $$|.5 \
+     $$*.6
+
+!,
+'-j1',
+'bar
+baz
+biz
+buz
+foo.1
+bar.2
+bar.3
+baz.3
+biz.3
+bar.4
+baz.4
+biz.4
+buz.5
+.6
+');
+
+
+# Test #2: target/pattern -specific variables.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+.DEFAULT: ; @echo '$@'
+
+foo.x: $$a $$b
+
+foo.x: a := bar
+
+%.x: b := baz
+!,
+'',
+'bar
+baz
+');
+
+
+# Test #3: order of prerequisites.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+.DEFAULT: ; @echo '$@'
+
+all: foo bar baz
+
+# Subtest #1
+foo: foo.1; @:
+foo: foo.2
+foo: foo.3
+
+# Subtest #2
+bar: bar.2
+bar: bar.1; @:
+bar: bar.3
+
+# Subtest #3
+baz: baz.1
+baz: baz.2
+baz: ; @:
+!,
+'-j1',
+'foo.1
+foo.2
+foo.3
+bar.1
+bar.2
+bar.3
+baz.1
+baz.2
+');
+
+# TEST #4: eval in a context where there is no reading_file
+run_make_test(q!
+.SECONDEXPANSION:
+all : $$(eval $$(info test))
+!,
+            '', "test\n#MAKE#: Nothing to be done for 'all'.\n");
+
+# TEST #5: (NEGATIVE) catch eval in a prereq list trying to create new
+# target/prereq relationships.
+
+run_make_test(q!
+.SECONDEXPANSION:
+proj1.exe : proj1.o $$(eval $$(test))
+define test
+proj1.o : proj1.c
+proj1.c: proj1.h
+endef
+!,
+              '', "#MAKE#: *** prerequisites cannot be defined in recipes.  Stop.\n", 512);
+
+
+# Automatic $$+ variable expansion issue.  Savannah bug #25780
+run_make_test(q!
+all : foo foo
+.SECONDEXPANSION:
+all : $$+ ; @echo '$+'
+foo : ;
+!,
+                  '', "foo foo foo foo\n");
+
+
+# Automatic $$+ variable expansion issue.  Savannah bug #25780
+run_make_test(q!
+all : bar bar
+bar : ;
+q%x : ;
+.SECONDEXPANSION:
+a%l: q1x $$+ q2x ; @echo '$+'
+!,
+                  '', "q1x bar bar q2x bar bar\n");
+
+
+# Allow patsubst shorthand in second expansion context.
+# Requires the colon to be quoted.  Savannah bug #16545
+run_make_test(q!
+.PHONY: foo.bar
+.SECONDEXPANSION:
+foo: $$(@\\:%=%.bar); @echo '$^'
+!,
+              '', "foo.bar\n");
+
+1;
diff --git a/src/kmk/tests/scripts/features/se_implicit b/src/kmk/tests/scripts/features/se_implicit
new file mode 100644
index 0000000..e40270f
--- /dev/null
+++ b/src/kmk/tests/scripts/features/se_implicit
@@ -0,0 +1,260 @@
+#                                                                    -*-perl-*-
+$description = "Test second expansion in ordinary rules.";
+
+$details = "";
+
+use Cwd;
+
+$dir = cwd;
+$dir =~ s,.*/([^/]+)$,../$1,;
+
+
+# Test #1: automatic variables.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+.DEFAULT: ; @echo '$@'
+
+foo.a: bar baz
+
+foo.a: biz | buz
+
+foo.%: 1.$$@ \
+       2.$$< \
+       $$(addprefix 3.,$$^) \
+       $$(addprefix 4.,$$+) \
+       5.$$| \
+       6.$$*
+	@:
+
+1.foo.a \
+2.bar \
+3.bar \
+3.baz \
+3.biz \
+4.bar \
+4.baz \
+4.biz \
+5.buz \
+6.a:
+	@echo '$@'
+
+!,
+'-j1',
+'1.foo.a
+2.bar
+3.bar
+3.baz
+3.biz
+4.bar
+4.baz
+4.biz
+5.buz
+6.a
+bar
+baz
+biz
+buz
+');
+
+
+# Test #2: target/pattern -specific variables.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+foo.x:
+
+foo.%: $$(%_a) $$(%_b) bar
+	@:
+
+foo.x: x_a := bar
+
+%.x: x_b := baz
+
+bar baz: ; @echo '$@'
+!,
+              '', "bar\nbaz\n");
+
+
+# Test #3: order of prerequisites.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+.DEFAULT: ; @echo '$@'
+
+all: foo bar baz
+
+
+# Subtest #1
+#
+%oo: %oo.1; @:
+
+foo: foo.2
+
+foo: foo.3
+
+foo.1: ; @echo '$@'
+
+
+# Subtest #2
+#
+bar: bar.2
+
+%ar: %ar.1; @:
+
+bar: bar.3
+
+bar.1: ; @echo '$@'
+
+
+# Subtest #3
+#
+baz: baz.1
+
+baz: baz.2
+
+%az: ; @:
+!,
+              '-j1',
+'foo.1
+foo.2
+foo.3
+bar.1
+bar.2
+bar.3
+baz.1
+baz.2
+');
+
+
+# Test #4: stem splitting logic.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+$(dir)/tmp/bar.o:
+
+$(dir)/tmp/foo/bar.c: ; @echo '$@'
+$(dir)/tmp/bar/bar.c: ; @echo '$@'
+foo.h: ; @echo '$@'
+
+%.o: $$(addsuffix /%.c,foo bar) foo.h
+	@echo '$@: {$<} $^'
+!,
+              "dir=$dir", "$dir/tmp/foo/bar.c
+$dir/tmp/bar/bar.c
+foo.h
+$dir/tmp/bar.o: {$dir/tmp/foo/bar.c} $dir/tmp/foo/bar.c $dir/tmp/bar/bar.c foo.h
+");
+
+
+# Test #5: stem splitting logic and order-only prerequisites.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+$(dir)/tmp/foo.o: $(dir)/tmp/foo.c
+$(dir)/tmp/foo.c: ; @echo '$@'
+bar.h: ; @echo '$@'
+
+%.o: %.c|bar.h
+	@echo '$@: {$<} {$|} $^'
+
+!,
+              "dir=$dir", "$dir/tmp/foo.c
+bar.h
+$dir/tmp/foo.o: {$dir/tmp/foo.c} {bar.h} $dir/tmp/foo.c
+");
+
+
+# Test #6: lack of implicit prerequisites.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+foo.o: foo.c
+foo.c: ; @echo '$@'
+
+%.o:
+	@echo '$@: {$<} $^'
+!,
+              '', "foo.c\nfoo.o: {foo.c} foo.c\n");
+
+
+# Test #7: Test stem from the middle of the name.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+foobarbaz:
+
+foo%baz: % $$*.1
+	@echo '$*'
+
+bar bar.1:
+	@echo '$@'
+!,
+              '', "bar\nbar.1\nbar\n");
+
+
+# Test #8: Make sure stem triple-expansion does not happen.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+foo$$bar:
+
+f%r: % $$*.1
+	@echo '$*'
+
+oo$$ba oo$$ba.1:
+	@echo '$@'
+!,
+              '', 'oo$ba
+oo$ba.1
+oo$ba
+');
+
+# Test #9: Check the value of $^
+run_make_test(q!
+.SECONDEXPANSION:
+
+%.so: | $$(extra) ; @echo $^
+
+foo.so: extra := foo.o
+foo.so:
+foo.o:
+!,
+              '', "\n");
+
+# Test #10: Test second expansion with second expansion prerequisites
+# Ensures pattern_search() recurses with SE prereqs.
+touch('a');
+run_make_test(q!
+.SECONDEXPANSION:
+sim_base_rgg := just_a_name
+sim_base_src := a
+sim_base_f := a a a
+sim_%.f: $${sim_$$*_f}
+	echo $@
+sim_%.src: $${sim_$$*_src}
+	echo $@
+sim_%: \
+	$$(if $$(sim_$$*_src),sim_%.src) \
+	$$(if $$(sim_$$*_f),sim_%.f) \
+	$$(if $$(sim_$$*_rgg),$$(sim_$$*_rgg).s)
+	echo $@
+!,
+              '-s sim_base', "#MAKE#: *** No rule to make target 'sim_base'.  Stop.", 512);
+
+unlink('a');
+
+# Ensure that order-only tokens embedded in second expansions are parsed
+run_make_test(q!
+.SECONDEXPANSION:
+PREREQS=p1|p2
+P2=p2
+all : foo bar
+f%o: $$(PREREQS) ; @echo '$@' from '$^' and '$|'
+b%r: p1|$$(P2)   ; @echo '$@' from '$^' and '$|'
+p% : ; : $@
+!,
+              "", ": p1\n: p2\nfoo from p1 and p2\nbar from p1 and p2\n");
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/features/se_statpat b/src/kmk/tests/scripts/features/se_statpat
new file mode 100644
index 0000000..828afa2
--- /dev/null
+++ b/src/kmk/tests/scripts/features/se_statpat
@@ -0,0 +1,109 @@
+#                                                                    -*-perl-*-
+$description = "Test second expansion in static pattern rules.";
+
+$details = "";
+
+# Test #1: automatic variables.
+#
+# bird: Had to add -j1 here earlier...
+run_make_test(q!
+.SECONDEXPANSION:
+.DEFAULT: ; @echo '$@'
+
+foo.a foo.b: foo.%: bar.% baz.%
+foo.a foo.b: foo.%: biz.% | buz.%
+
+foo.a foo.b: foo.%: $$@.1 \
+                    $$<.2 \
+                    $$(addsuffix .3,$$^) \
+                    $$(addsuffix .4,$$+) \
+                    $$|.5 \
+                    $$*.6
+!,
+              '', 'bar.a
+baz.a
+biz.a
+buz.a
+foo.a.1
+bar.a.2
+bar.a.3
+baz.a.3
+biz.a.3
+bar.a.4
+baz.a.4
+biz.a.4
+buz.a.5
+a.6
+');
+
+
+# Test #2: target/pattern -specific variables.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+.DEFAULT: ; @echo '$@'
+
+foo.x foo.y: foo.%: $$(%_a) $$($$*_b)
+
+foo.x: x_a := bar
+
+%.x: x_b := baz
+!,
+              '', "bar\nbaz\n");
+
+
+# Test #3: order of prerequisites.
+#
+# bird: Had to add -j1 here earlier...
+run_make_test(q!
+.SECONDEXPANSION:
+.DEFAULT: ; @echo '$@'
+
+all: foo.a bar.a baz.a
+
+# Subtest #1
+foo.a foo.b: foo.%: foo.%.1; @:
+foo.a foo.b: foo.%: foo.%.2
+foo.a foo.b: foo.%: foo.%.3
+
+
+# Subtest #2
+bar.a bar.b: bar.%: bar.%.2
+bar.a bar.b: bar.%: bar.%.1; @:
+bar.a bar.b: bar.%: bar.%.3
+
+
+# Subtest #3
+baz.a baz.b: baz.%: baz.%.1
+baz.a baz.b: baz.%: baz.%.2
+baz.a baz.b: ; @:
+!,
+             '', 'foo.a.1
+foo.a.2
+foo.a.3
+bar.a.1
+bar.a.2
+bar.a.3
+baz.a.1
+baz.a.2
+');
+
+
+# Test #4: Make sure stem triple-expansion does not happen.
+#
+run_make_test(q!
+.SECONDEXPANSION:
+foo$$bar: f%r: % $$*.1
+	@echo '$*'
+
+oo$$ba oo$$ba.1:
+	@echo '$@'
+!,
+              '', 'oo$ba
+oo$ba.1
+oo$ba
+');
+
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/features/shell_assignment b/src/kmk/tests/scripts/features/shell_assignment
new file mode 100644
index 0000000..686e4bd
--- /dev/null
+++ b/src/kmk/tests/scripts/features/shell_assignment
@@ -0,0 +1,65 @@
+#                                                                    -*-perl-*-
+
+$description = "Test BSD-style shell assignments (VAR != VAL) for variables.";
+
+$details = "";
+
+# TEST 0: Basic shell assignment (!=).
+
+run_make_test('
+.POSIX:
+
+demo1!=printf \'  1   2 3\n4\n\n5 \n \n 6\n\n\n\n\'
+demo2 != printf \'7 8\n \'
+demo3 != printf \'$$(demo2)\'
+demo4 != printf \' 2 3 \n\'
+demo5 != printf \' 2 3 \n\n\'
+all: ; @echo "<$(demo1)> <$(demo2)> <$(demo3)> <$(demo4)> <${demo5}>"
+',
+              '', "<  1   2 3 4  5     6   > <7 8  > <7 8  > < 2 3 > < 2 3  >\n");
+
+# TEST 1: Handle '#' the same way as BSD make
+
+run_make_test('
+foo1!=echo bar#baz
+hash != printf \'\043\'
+foo2!= echo "bar$(hash)baz"
+
+all: ; @echo "<$(foo1)> <$(hash)> <$(foo2)>"
+',
+              '', "<bar> <#> <bar#baz>\n");
+
+# TEST 2: shell assignment variables (from !=) should be recursive.
+# Note that variables are re-evaluated later, so the shell can output
+# a value like $(XYZZY) as part of !=.  The $(XYZZY) will be EVALUATED
+# when the value containing it is evaluated.  On the negative side, this
+# means if you don't want this, you need to escape dollar signs as $$.
+# On the positive side, it means that shell programs can output macros
+# that are then evaluated as they are traditionally evaluated.. and that
+# you can use traditional macro evaluation semantics to implement !=.
+
+run_make_test('
+XYZZY = fiddle-dee-dee
+dollar = $$
+VAR3 != printf \'%s\' \'$(dollar)(XYZZY)\'
+
+all: ; @echo "<$(VAR3)>"
+',
+              '', "<fiddle-dee-dee>\n");
+
+
+# TEST 3: Overrides invoke shell anyway; they just don't store the result
+# in a way that is visible.
+
+run_make_test('
+
+override != echo abc > ,abc ; cat ,abc
+
+all: ; @echo "<$(override)>" ; cat ,abc
+',
+              'override=xyz', "<xyz>\nabc\n");
+
+unlink(',abc');
+
+
+1;
diff --git a/src/kmk/tests/scripts/features/statipattrules b/src/kmk/tests/scripts/features/statipattrules
new file mode 100644
index 0000000..6b3c565
--- /dev/null
+++ b/src/kmk/tests/scripts/features/statipattrules
@@ -0,0 +1,111 @@
+#                                                                    -*-perl-*-
+$description = "Test handling of static pattern rules.";
+
+$details = "\
+The makefile created in this test has three targets.  The
+filter command is used to get those target names ending in
+.o and statically creates a compile command with the target
+name and the target name with .c.  It also does the same thing
+for another target filtered with .elc and creates a command
+to emacs a .el file";
+
+&touch('bar.c', 'lose.c');
+
+#   TEST #0
+#   -------
+
+run_make_test('
+files = foo.elc bar.o lose.o
+
+$(filter %.o,$(files)): %.o: %.c ; @echo CC -c $(CFLAGS) $< -o $@
+
+$(filter %.elc,$(files)): %.elc: %.el ; @echo emacs $<
+',
+              '',
+              'CC -c bar.c -o bar.o');
+
+#  TEST #1
+#  -------
+
+run_make_test(undef, 'lose.o', 'CC -c lose.c -o lose.o');
+
+
+#   TEST #2
+#   -------
+&touch("foo.el");
+
+run_make_test(undef, 'foo.elc', 'emacs foo.el');
+
+# Clean up after the first tests.
+unlink('foo.el', 'bar.c', 'lose.c');
+
+
+# TEST #3 -- PR/1670: don't core dump on invalid static pattern rules
+# -------
+
+run_make_test('
+.DEFAULT: ; @echo $@
+foo: foo%: % %.x % % % y.% % ; @echo $@
+',
+              '-j1', ".x\ny.\nfoo");
+
+
+# TEST #4 -- bug #12180: core dump on a stat pattern rule with an empty
+#                        prerequisite list.
+run_make_test('
+foo.x bar.x: %.x : ; @echo $@
+
+',
+              '', 'foo.x');
+
+
+# TEST #5 -- bug #13881: double colon static pattern rule does not
+#                        substitute %.
+run_make_test('
+foo.bar:: %.bar: %.baz
+foo.baz: ;@:
+',
+              '', '');
+
+
+# TEST #6: make sure the second stem does not overwrite the first
+#          perprerequisite's stem (Savannah bug #16053).
+#
+run_make_test('
+all.foo.bar: %.foo.bar: %.one
+
+all.foo.bar: %.bar: %.two
+
+all.foo.bar:
+	@echo $*
+	@echo $^
+
+.DEFAULT:;@:
+',
+'',
+'all.foo
+all.one all.foo.two');
+
+
+# TEST #7: make sure the second stem does not overwrite the first
+#          perprerequisite's stem when second expansion is enabled
+#          (Savannah bug #16053).
+#
+run_make_test('
+.SECONDEXPANSION:
+
+all.foo.bar: %.foo.bar: %.one $$*-one
+
+all.foo.bar: %.bar: %.two $$*-two
+
+all.foo.bar:
+	@echo $*
+	@echo $^
+
+.DEFAULT:;@:
+',
+'',
+'all.foo
+all.one all-one all.foo.two all.foo-two');
+
+1;
diff --git a/src/kmk/tests/scripts/features/targetvars b/src/kmk/tests/scripts/features/targetvars
new file mode 100644
index 0000000..a9b8dbe
--- /dev/null
+++ b/src/kmk/tests/scripts/features/targetvars
@@ -0,0 +1,273 @@
+#                                                                    -*-perl-*-
+$description = "Test target-specific variable settings.";
+
+$details = "\
+Create a makefile containing various flavors of target-specific variable
+values, override and non-override, and using various variable expansion
+rules, semicolon interference, etc.";
+
+run_make_test('
+SHELL = /bin/sh
+export FOO = foo
+export BAR = bar
+one: override FOO = one
+one two: ; @echo $(FOO) $(BAR)
+two: BAR = two
+three: ; BAR=1000
+	@echo $(FOO) $(BAR)
+# Some things that shouldn not be target vars
+funk : override
+funk : override adelic
+adelic override : ; echo $@
+# Test per-target recursive variables
+four:FOO=x
+four:VAR$(FOO)=ok
+four: ; @echo "$(FOO) $(VAR$(FOO)) $(VAR) $(VARx)"
+five:FOO=x
+five six : VAR$(FOO)=good
+five six: ;@echo "$(FOO) $(VAR$(FOO)) $(VAR) $(VARx) $(VARfoo)"
+# Test per-target variable inheritance
+seven: eight
+seven eight: ; @echo $@: $(FOO) $(BAR)
+seven: BAR = seven
+seven: FOO = seven
+eight: BAR = eight
+# Test the export keyword with per-target variables
+nine: ; @echo $(FOO) $(BAR) $$FOO $$BAR
+nine: FOO = wallace
+nine-a: export BAZ = baz
+nine-a: ; @echo $$BAZ
+# Test = escaping
+EQ = =
+ten: one$(EQ)two
+ten: one $(EQ) two
+ten one$(EQ)two $(EQ):;@echo $@
+.PHONY: one two three four five six seven eight nine ten $(EQ) one$(EQ)two
+# Test target-specific vars with pattern/suffix rules
+QVAR = qvar
+RVAR = =
+%.q : ; @echo $(QVAR) $(RVAR)
+foo.q : RVAR += rvar
+# Target-specific vars with multiple LHS pattern rules
+%.r %.s %.t: ; @echo $(QVAR) $(RVAR) $(SVAR) $(TVAR)
+foo.r : RVAR += rvar
+foo.t : TVAR := $(QVAR)
+',
+                 "one two three", "one bar\nfoo two\nBAR=1000\nfoo bar\n");
+
+# TEST #2
+
+run_make_test(undef, "one two FOO=1 BAR=2", "one 2\n1 2\n");
+
+# TEST #3
+
+run_make_test(undef, "four", "x ok  ok\n");
+
+# TEST #4
+
+run_make_test(undef, "seven", "eight: seven eight\nseven: seven seven\n");
+
+# TEST #5
+
+run_make_test(undef, "nine", "wallace bar wallace bar\n");
+
+# TEST #5-a
+
+run_make_test(undef, "nine-a", "baz\n");
+
+# TEST #6
+
+run_make_test(undef, "ten", "one=two\none bar\n=\nfoo two\nten\n");
+
+# TEST #6
+
+run_make_test(undef, "foo.q bar.q", "qvar = rvar\nqvar =\n");
+
+# TEST #7
+
+run_make_test(undef, "foo.t bar.s", "qvar = qvar\nqvar =\n");
+
+
+# TEST #8
+# For PR/1378: Target-specific vars don't inherit correctly
+
+run_make_test('
+foo: FOO = foo
+bar: BAR = bar
+foo: bar
+bar: baz
+baz: ; @echo $(FOO) $(BAR)
+', "", "foo bar\n");
+
+# TEST #9
+# For PR/1380: Using += assignment in target-specific variables sometimes fails
+# Also PR/1831
+
+run_make_test('
+.PHONY: all one
+all: FOO += baz
+all: one; @echo $(FOO)
+
+FOO = bar
+
+one: FOO += biz
+one: FOO += boz
+one: ; @echo $(FOO)
+',
+              '', "bar baz biz boz\nbar baz\n");
+
+# Test #10
+
+run_make_test(undef, 'one', "bar biz boz\n");
+
+# Test #11
+# PR/1709: Test semicolons in target-specific variable values
+
+run_make_test('
+foo : FOO = ; ok
+foo : ; @echo "$(FOO)"
+',
+              '', "; ok\n");
+
+# Test #12
+# PR/2020: More hassles with += target-specific vars.  I _really_ think
+# I nailed it this time :-/.
+
+run_make_test('
+.PHONY: a
+
+BLAH := foo
+COMMAND = echo $(BLAH)
+
+a: ; @$(COMMAND)
+
+a: BLAH := bar
+a: COMMAND += snafu $(BLAH)
+',
+              '', "bar snafu bar\n");
+
+# Test #13
+# Test double-colon rules with target-specific variable values
+
+run_make_test('
+W = bad
+X = bad
+foo: W = ok
+foo:: ; @echo $(W) $(X) $(Y) $(Z)
+foo:: ; @echo $(W) $(X) $(Y) $(Z)
+foo: X = ok
+
+Y = foo
+bar: foo
+bar: Y = bar
+
+Z = nopat
+ifdef PATTERN
+  fo% : Z = pat
+endif
+',
+             'foo', "ok ok foo nopat\nok ok foo nopat\n");
+
+# Test #14
+# Test double-colon rules with target-specific variable values and
+# inheritance
+
+run_make_test(undef, 'bar', "ok ok bar nopat\nok ok bar nopat\n");
+
+# Test #15
+# Test double-colon rules with pattern-specific variable values
+
+run_make_test(undef, 'foo PATTERN=yes', "ok ok foo pat\nok ok foo pat\n");
+
+# Test #16
+# Test target-specific variables with very long command line
+# (> make default buffer length)
+
+run_make_test('
+base_metals_fmd_reports.sun5 base_metals_fmd_reports CreateRealPositions        CreateMarginFunds deals_changed_since : BUILD_OBJ=$(shell if [ -f               "build_information.generate" ]; then echo "$(OBJ_DIR)/build_information.o"; else echo "no build information"; fi  )
+
+deals_changed_since: ; @echo $(BUILD_OBJ)
+',
+              '', "no build information\n");
+
+# TEST #17
+
+# Test a merge of set_lists for files, where one list is much longer
+# than the other.  See Savannah bug #15757.
+
+mkdir('t1', 0777);
+touch('t1/rules.mk');
+
+run_make_test('
+VPATH = t1
+include rules.mk
+.PHONY: all
+all: foo.x
+foo.x : rules.mk ; @echo MYVAR=$(MYVAR) FOOVAR=$(FOOVAR) ALLVAR=$(ALLVAR)
+all: ALLVAR = xxx
+foo.x: FOOVAR = bar
+rules.mk : MYVAR = foo
+.INTERMEDIATE: foo.x rules.mk
+',
+              '-I t1', 'MYVAR= FOOVAR=bar ALLVAR=xxx');
+
+rmfiles('t1/rules.mk');
+rmdir('t1');
+
+# TEST #18
+
+# Test appending to a simple variable containing a "$": avoid a
+# double-expansion.  See Savannah bug #15913.
+
+run_make_test('
+VAR := $$FOO
+foo: VAR += BAR
+foo: ; @echo '."'".'$(VAR)'."'".'
+',
+              '', '$FOO BAR');
+
+# TEST #19: Override with append variables
+
+run_make_test('
+a: override FOO += f1
+a: FOO += f2
+a: ; @echo "$(FOO)"
+',
+              '', "f1\n");
+
+run_make_test(undef, 'FOO=C', "C f1\n");
+
+# TEST #19: Conditional variables with command-line settings
+
+run_make_test('
+a: FOO ?= f1
+a: ; @echo "$(FOO)"
+',
+              '', "f1\n");
+
+run_make_test(undef, 'FOO=C', "C\n");
+
+# TEST #20: Check for continuation after semicolons
+
+run_make_test(q!
+a: A = 'hello;\
+world'
+a: ; @echo $(A)
+!,
+              '', "hello; world\n");
+
+# TEST #19: Test define/endef variables as target-specific vars
+
+# run_make_test('
+# define b
+# @echo global
+# endef
+# a: define b
+# @echo local
+# endef
+
+# a: ; $(b)
+# ',
+#               '', "local\n");
+
+1;
diff --git a/src/kmk/tests/scripts/features/utf8 b/src/kmk/tests/scripts/features/utf8
new file mode 100644
index 0000000..54bc471
--- /dev/null
+++ b/src/kmk/tests/scripts/features/utf8
@@ -0,0 +1,11 @@
+#                                                                    -*-perl-*-
+
+$description = "Test support for UTF-8.";
+
+$details = "";
+
+# Verify that the UTF-8 BOM is ignored.
+run_make_test("\xEF\xBB\xBFall: ; \@echo \$\@\n", '', "all");
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/features/varnesting b/src/kmk/tests/scripts/features/varnesting
new file mode 100644
index 0000000..d8f3ffb
--- /dev/null
+++ b/src/kmk/tests/scripts/features/varnesting
@@ -0,0 +1,35 @@
+#                                                                    -*-perl-*-
+$description = "Test recursive variables";
+
+$details = "";
+
+run_make_test('
+x = variable1
+variable2 := Hello
+y = $(subst 1,2,$(x))
+z = y
+a := $($($(z)))
+all: 
+	@echo $(a)
+',
+              '', "Hello\n");
+
+# This tests resetting the value of a variable while expanding it.
+# You may only see problems with this if you're using valgrind or
+# some other memory checker that poisons freed memory.
+# See Savannah patch #7534
+
+run_make_test('
+VARIABLE = $(eval VARIABLE := echo hi)$(VARIABLE)
+wololo:
+	@$(VARIABLE)
+',
+              '', "hi\n");
+
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/features/vpath b/src/kmk/tests/scripts/features/vpath
new file mode 100644
index 0000000..530d9e5
--- /dev/null
+++ b/src/kmk/tests/scripts/features/vpath
@@ -0,0 +1,82 @@
+#                                                                     -*-perl-*-
+
+$description = "The following test creates a makefile to test the \n"
+              ."vpath directive which allows you to specify a search \n"
+              ."path for a particular class of filenames, those that\n"
+              ."match a particular pattern.";
+
+$details = "This tests the vpath directive by specifying search directories\n"
+         ."for one class of filenames with the form: vpath pattern directories"
+         ."\nIn this test, we specify the working directory for all files\n"
+         ."that end in c or h.  We also test the variables $@ (which gives\n"
+         ."target name) and $^ (which is a list of all dependencies \n"
+         ."including the directories in which they were found).  It also\n"
+         ."uses the function firstword used to extract just the first\n"
+         ."dependency from the entire list.";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "vpath %.c foo\n";
+print MAKEFILE "vpath %.c $workdir\n";
+print MAKEFILE "vpath %.h $workdir\n";
+print MAKEFILE "objects = main.o kbd.o commands.o display.o insert.o\n";
+print MAKEFILE "edit:  \$(objects)\n";
+print MAKEFILE "\t\@echo cc -o \$@ \$^\n";
+print MAKEFILE "main.o : main.c defs.h\n";
+print MAKEFILE "\t\@echo cc -c \$(firstword \$^)\n";
+print MAKEFILE "kbd.o : kbd.c defs.h command.h\n";
+print MAKEFILE "\t\@echo cc -c kbd.c\n";
+print MAKEFILE "commands.o : command.c defs.h command.h\n";
+print MAKEFILE "\t\@echo cc -c commands.c\n";
+print MAKEFILE "display.o : display.c defs.h buffer.h\n";
+print MAKEFILE "\t\@echo cc -c display.c\n";
+print MAKEFILE "insert.o : insert.c defs.h buffer.h\n";
+print MAKEFILE "\t\@echo cc -c insert.c\n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+
+@files_to_touch = ("$workdir${pathsep}main.c","$workdir${pathsep}defs.h",
+               "$workdir${pathsep}kbd.c","$workdir${pathsep}command.h",
+               "$workdir${pathsep}commands.c","$workdir${pathsep}display.c",
+               "$workdir${pathsep}buffer.h","$workdir${pathsep}insert.c",
+	       "$workdir${pathsep}command.c");
+
+&touch(@files_to_touch);
+
+# kmk: this requires -j1 because of ordering.
+&run_make_with_options($makefile,"-j1",&get_logfile);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "cc -c $workdir${pathsep}main.c\ncc -c kbd.c\ncc -c commands.c\n"
+         ."cc -c display.c\n"
+         ."cc -c insert.c\ncc -o edit main.o kbd.o commands.o display.o "
+         ."insert.o\n";
+
+if (&compare_output($answer,&get_logfile(1)))
+{
+  unlink @files_to_touch;
+}
+
+# TEST 2: after vpath lookup ensure we don't get incorrect circular dependency
+# warnings due to change of struct file ptr.  Savannah bug #13529.
+
+mkdir('vpath-d', 0777);
+
+run_make_test(q!
+vpath %.te vpath-d/
+.SECONDARY:
+default: vpath-d/a vpath-d/b
+vpath-d/a: fail.te
+vpath-d/b : fail.te
+vpath-d/fail.te:
+!,
+              '', "#MAKE#: Nothing to be done for 'default'.\n");
+
+rmdir('vpath-d');
+
+1;
diff --git a/src/kmk/tests/scripts/features/vpath2 b/src/kmk/tests/scripts/features/vpath2
new file mode 100644
index 0000000..7e970a7
--- /dev/null
+++ b/src/kmk/tests/scripts/features/vpath2
@@ -0,0 +1,45 @@
+$description = "This is part 2 in a series to test the vpath directive\n"
+              ."It tests the three forms of the directive:\n"
+              ."     vpath pattern directive\n"
+              ."     vpath pattern  (clears path associated with pattern)\n"
+              ."     vpath          (clears all paths specified with vpath)\n";
+
+$details = "This test simply adds many search paths using various vpath\n"
+          ."directive forms and clears them afterwards.  It has a simple\n"
+          ."rule to print a message at the end to confirm that the makefile\n"
+          ."ran with no errors.\n";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "VPATH = $workdir:$sourcedir\n";
+print MAKEFILE "vpath %.c foo\n";
+print MAKEFILE "vpath %.c $workdir\n";
+print MAKEFILE "vpath %.c $sourcedir\n";
+print MAKEFILE "vpath %.h $workdir\n";
+print MAKEFILE "vpath %.c\n";
+print MAKEFILE "vpath\n";
+print MAKEFILE "all:\n";
+print MAKEFILE "\t\@echo ALL IS WELL\n";
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile,"",&get_logfile);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "ALL IS WELL\n";
+
+&compare_output($answer,&get_logfile(1));
+
+1;
+
+
+
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/features/vpath3 b/src/kmk/tests/scripts/features/vpath3
new file mode 100644
index 0000000..839fb72
--- /dev/null
+++ b/src/kmk/tests/scripts/features/vpath3
@@ -0,0 +1,41 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the interaction of the -lfoo feature and vpath";
+$details = "";
+
+my @dirs_to_make = qw(a1 b1 a2 b2 b3);
+for my $d (@dirs_to_make) {
+    mkdir($d, 0777);
+}
+
+my @files_to_touch = ("a1${pathsep}lib1.a",
+                      "a1${pathsep}libc.a",
+                      "b1${pathsep}lib1.so",
+                      "a2${pathsep}lib2.a",
+                      "b2${pathsep}lib2.so",
+                      "lib3.a",
+                      "b3${pathsep}lib3.so");
+&touch(@files_to_touch);
+
+my $answer = "a1${pathsep}lib1.a a1${pathsep}libc.a " .
+             "a2${pathsep}lib2.a lib3.a\n";
+if ($port_type eq 'VMS-DCL') {
+    $answer =~ s/ /,/g;
+}
+
+run_make_test('
+vpath %.h b3
+vpath %.a a1
+vpath %.so b1
+vpath % a2 b2
+vpath % b3
+all: -l1 -lc -l2 -l3; @echo $^
+',
+              '', $answer);
+
+unlink(@files_to_touch);
+for my $d (@dirs_to_make) {
+    rmdir($d);
+}
+
+1;
diff --git a/src/kmk/tests/scripts/features/vpathgpath b/src/kmk/tests/scripts/features/vpathgpath
new file mode 100644
index 0000000..5e6217b
--- /dev/null
+++ b/src/kmk/tests/scripts/features/vpathgpath
@@ -0,0 +1,66 @@
+#                                                                    -*-perl-*-
+$description = "Tests VPATH+/GPATH functionality.";
+
+$details = "";
+
+$VP = "$workdir$pathsep";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "VPATH = $VP\n";
+
+print MAKEFILE <<'EOMAKE';
+
+GPATH = $(VPATH)
+
+.SUFFIXES: .a .b .c .d
+.PHONY: general rename notarget intermediate
+
+%.a:
+%.b:
+%.c:
+%.d:
+
+%.a : %.b ; cat $^ > $@
+%.b : %.c ; cat $^ > $@
+%.c :: %.d ; cat $^ > $@
+
+# General testing info:
+
+general: foo.b
+foo.b: foo.c bar.c
+
+EOMAKE
+
+close(MAKEFILE);
+
+@touchedfiles = ();
+
+$off = -500;
+
+sub touchfiles {
+  foreach (@_) {
+    ($f = $_) =~ s,VP/,$VP,g;
+    &utouch($off, $f);
+    $off += 10;
+    push(@touchedfiles, $f);
+  }
+}
+
+# Run the general-case test
+
+&touchfiles("VP/foo.d", "VP/bar.d", "VP/foo.c", "VP/bar.c", "foo.b", "bar.d");
+
+&run_make_with_options($makefile,"general",&get_logfile());
+
+push(@touchedfiles, "bar.c");
+
+$answer = "$make_name: Nothing to be done for 'general'.\n";
+
+&compare_output($answer,&get_logfile(1));
+
+unlink(@touchedfiles) unless $keep;
+
+1;
diff --git a/src/kmk/tests/scripts/features/vpathplus b/src/kmk/tests/scripts/features/vpathplus
new file mode 100644
index 0000000..9ade3f0
--- /dev/null
+++ b/src/kmk/tests/scripts/features/vpathplus
@@ -0,0 +1,132 @@
+#                                                                    -*-perl-*-
+$description = "Tests the new VPATH+ functionality added in 3.76.";
+
+$details = "";
+
+$VP = "$workdir$pathsep";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "VPATH = $VP\n";
+
+print MAKEFILE <<'EOMAKE';
+
+SHELL = /bin/sh
+
+.SUFFIXES: .a .b .c .d
+.PHONY: general rename notarget intermediate
+
+%.a:
+%.b:
+%.c:
+%.d:
+
+%.a : %.b
+	cat $^ > $@
+%.b : %.c
+	cat $^ > $@ 2>/dev/null || exit 1
+%.c :: %.d
+	cat $^ > $@
+
+# General testing info:
+
+general: foo.b
+foo.b: foo.c bar.c
+
+# Rename testing info:
+
+rename: $(VPATH)/foo.c foo.d
+
+# Target not made testing info:
+
+notarget: notarget.b
+notarget.c: notarget.d
+	-@echo "not creating $@ from $^"
+
+# Intermediate files:
+
+intermediate: inter.a
+
+EOMAKE
+
+close(MAKEFILE);
+
+@touchedfiles = ();
+
+$off = -500;
+
+sub touchfiles {
+  foreach (@_) {
+    &utouch($off, $_);
+    $off += 10;
+    push(@touchedfiles, $_);
+  }
+}
+
+# Run the general-case test
+
+&touchfiles("$VP/foo.d", "$VP/bar.d", "$VP/foo.c", "$VP/bar.c", "foo.b", "bar.d");
+
+&run_make_with_options($makefile,"general",&get_logfile);
+
+push(@touchedfiles, "bar.c");
+
+$answer = "cat bar.d > bar.c
+cat ${VP}foo.c bar.c > foo.b 2>/dev/null || exit 1
+";
+&compare_output($answer,&get_logfile(1));
+
+# Test rules that don't make the target correctly
+
+&touchfiles("$VP/notarget.c", "notarget.b", "notarget.d");
+
+&run_make_with_options($makefile,"notarget",&get_logfile,512);
+
+$answer = "not creating notarget.c from notarget.d
+cat notarget.c > notarget.b 2>/dev/null || exit 1
+$make_name: *** [$makefile:16: notarget.b] Error 1
+";
+
+&compare_output($answer,&get_logfile(1));
+
+# Test intermediate file handling (part 1)
+
+&touchfiles("$VP/inter.d");
+
+&run_make_with_options($makefile,"intermediate",&get_logfile);
+
+push(@touchedfiles, "inter.a", "inter.b");
+
+$answer = "cat ${VP}inter.d > inter.c
+cat inter.c > inter.b 2>/dev/null || exit 1
+cat inter.b > inter.a
+rm inter.b inter.c
+";
+&compare_output($answer,&get_logfile(1));
+
+# Test intermediate file handling (part 2)
+
+&utouch(-20, "inter.a");
+&utouch(-10, "$VP/inter.b");
+&touch("$VP/inter.d");
+
+push(@touchedfiles, "$VP/inter.b", "$VP/inter.d");
+
+&run_make_with_options($makefile,"intermediate",&get_logfile);
+
+$answer = "cat ${VP}inter.d > inter.c
+cat inter.c > inter.b 2>/dev/null || exit 1
+cat inter.b > inter.a
+rm inter.c
+";
+&compare_output($answer,&get_logfile(1));
+
+unlink @touchedfiles unless $keep;
+
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/functions/abspath b/src/kmk/tests/scripts/functions/abspath
new file mode 100644
index 0000000..84c30ab
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/abspath
@@ -0,0 +1,81 @@
+#                                                                    -*-perl-*-
+$description = "Test the abspath functions.";
+
+$details = "";
+
+run_make_test('
+ifneq ($(realpath $(abspath .)),$(CURDIR))
+  $(warning .: abs="$(abspath .)" real="$(realpath $(abspath .))" curdir="$(CURDIR)")
+endif
+
+ifneq ($(realpath $(abspath ./)),$(CURDIR))
+  $(warning ./: abs="$(abspath ./)" real="$(realpath $(abspath ./))" curdir="$(CURDIR)")
+endif
+
+ifneq ($(realpath $(abspath .///)),$(CURDIR))
+  $(warning .///: abs="$(abspath .///)" real="$(realpath $(abspath .///))" curdir="$(CURDIR)")
+endif
+
+ifneq ($(abspath /),/)
+  $(warning /: abspath="$(abspath /)")
+endif
+
+ifneq ($(abspath ///),/)
+  $(warning ///: abspath="$(abspath ///)")
+endif
+
+ifneq ($(abspath /.),/)
+  $(warning /.: abspath="$(abspath /.)")
+endif
+
+ifneq ($(abspath ///.),/)
+  $(warning ///.: abspath="$(abspath ///.)")
+endif
+
+ifneq ($(abspath /./),/)
+  $(warning /./: abspath="$(abspath /./)")
+endif
+
+ifneq ($(abspath /.///),/)
+  $(warning /.///: abspath="$(abspath /.///)")
+endif
+
+ifneq ($(abspath /..),/)
+  $(warning /..: abspath="$(abspath /..)")
+endif
+
+ifneq ($(abspath ///..),/)
+  $(warning ///..: abspath="$(abspath ///..)")
+endif
+
+ifneq ($(abspath /../),/)
+  $(warning /../: abspath="$(abspath /../)")
+endif
+
+ifneq ($(abspath /..///),/)
+  $(warning /..///: abspath="$(abspath /..///)")
+endif
+
+
+ifneq ($(abspath /foo/bar/..),/foo)
+  $(warning /foo/bar/..: abspath="$(abspath /foo/bar/..)")
+endif
+
+ifneq ($(abspath /foo/bar/../../../baz),/baz)
+  $(warning /foo/bar/../../../baz: abspath="$(abspath /foo/bar/../../../baz)")
+endif
+
+ifneq ($(abspath /foo/bar/../ /..),/foo /)
+  $(warning /foo/bar/../ /..: abspath="$(abspath /foo/bar/../ /..)")
+endif
+
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/functions/addprefix b/src/kmk/tests/scripts/functions/addprefix
new file mode 100644
index 0000000..1845552
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/addprefix
@@ -0,0 +1,44 @@
+$description = "The following test creates a makefile to test the addprefix "
+              ."function.";
+
+$details = "";
+
+# IF YOU NEED >1 MAKEFILE FOR THIS TEST, USE &get_tmpfile; TO GET
+# THE NAME OF THE MAKEFILE.  THIS INSURES CONSISTENCY AND KEEPS TRACK OF
+# HOW MANY MAKEFILES EXIST FOR EASY DELETION AT THE END.
+# EXAMPLE: $makefile2 = &get_tmpfile;
+
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "string := \$(addprefix src${pathsep},a.b.z.foo hacks) \n"
+              ."all: \n"
+              ."\t\@echo \$(string) \n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile,"",&get_logfile,0);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "src${pathsep}a.b.z.foo src${pathsep}hacks\n";
+
+# COMPARE RESULTS
+
+# In this call to compare output, you should use the call &get_logfile(1)
+# to send the name of the last logfile created.  You may also use
+# the special call &get_logfile(1) which returns the same as &get_logfile(1).
+
+&compare_output($answer,&get_logfile(1));
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/functions/addsuffix b/src/kmk/tests/scripts/functions/addsuffix
new file mode 100644
index 0000000..da4fbb7
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/addsuffix
@@ -0,0 +1,36 @@
+#                                                                    -*-perl-*-
+$description = "Test the addsuffix function.";
+
+$details = "";
+
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE <<EOMAKE;
+string := \$(addsuffix .c,src${pathsep}a.b.z.foo hacks)
+one: ; \@echo \$(string)
+
+two: ; \@echo \$(addsuffix foo,)
+EOMAKE
+
+close(MAKEFILE);
+
+
+# TEST 0
+
+&run_make_with_options($makefile, "", &get_logfile);
+$answer = "src${pathsep}a.b.z.foo.c hacks.c\n";
+&compare_output($answer,&get_logfile(1));
+
+
+# TEST 1
+
+&run_make_with_options($makefile, "two", &get_logfile);
+$answer = "\n";
+&compare_output($answer,&get_logfile(1));
+
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/functions/andor b/src/kmk/tests/scripts/functions/andor
new file mode 100644
index 0000000..62e0c2e
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/andor
@@ -0,0 +1,50 @@
+#                                                                    -*-perl-*-
+$description = "Test the and & or functions.\n";
+
+$details = "Try various uses of and & or to ensure they all give the correct
+results.\n";
+
+# TEST #0
+# For $(and ...), it will either be empty or the last value
+run_make_test('
+NEQ = $(subst $1,,$2)
+f =
+t = true
+
+all:
+	@echo 1 $(and    ,$t)
+	@echo 2 $(and $t)
+	@echo 3 $(and $t,)
+	@echo 4 $(and z,true,$f,false)
+	@echo 5 $(and $t,$f,$(info bad short-circuit))
+	@echo 6 $(and $(call NEQ,a,b),true)
+	@echo 7 $(and $(call NEQ,a,a),true)
+	@echo 8 $(and z,true,fal,se) hi
+	@echo 9 $(and ,true,fal,se)there
+	@echo 10 $(and   $(e) ,$t)',
+              '',
+              "1\n2 true\n3\n4\n5\n6 true\n7\n8 se hi\n9 there\n10\n");
+
+# TEST #1
+# For $(or ...), it will either be empty or the first true value
+run_make_test('
+NEQ = $(subst $1,,$2)
+f =
+t = true
+
+all:
+	@echo 1 $(or    ,    )
+	@echo 2 $(or $t)
+	@echo 3 $(or ,$t)
+	@echo 4 $(or z,true,$f,false)
+	@echo 5 $(or $t,$(info bad short-circuit))
+	@echo 6 $(or $(info short-circuit),$t)
+	@echo 7 $(or $(call NEQ,a,b),true)
+	@echo 8 $(or $(call NEQ,a,a),true)
+	@echo 9 $(or z,true,fal,se) hi
+	@echo 10 $(or ,true,fal,se)there
+	@echo 11 $(or   $(e) ,$f)',
+              '',
+              "short-circuit\n1\n2 true\n3 true\n4 z\n5 true\n6 true\n7 b\n8 true\n9 z hi\n10 truethere\n11\n");
+
+1;
diff --git a/src/kmk/tests/scripts/functions/basename b/src/kmk/tests/scripts/functions/basename
new file mode 100644
index 0000000..08f2ea5
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/basename
@@ -0,0 +1,44 @@
+$description = "The following test creates a makefile to test the suffix "
+              ."function.";
+
+$details = "";
+
+# IF YOU NEED >1 MAKEFILE FOR THIS TEST, USE &get_tmpfile; TO GET
+# THE NAME OF THE MAKEFILE.  THIS INSURES CONSISTENCY AND KEEPS TRACK OF
+# HOW MANY MAKEFILES EXIST FOR EASY DELETION AT THE END.
+# EXAMPLE: $makefile2 = &get_tmpfile;
+
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "string := \$(basename src${pathsep}a.b.z.foo.c src${pathsep}hacks src.bar${pathsep}a.b.z.foo.c src.bar${pathsep}hacks hacks) \n"
+              ."all: \n"
+              ."\t\@echo \$(string) \n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile,"",&get_logfile,0);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "src${pathsep}a.b.z.foo src${pathsep}hacks src.bar${pathsep}a.b.z.foo src.bar${pathsep}hacks hacks\n";
+
+# COMPARE RESULTS
+
+# In this call to compare output, you should use the call &get_logfile(1)
+# to send the name of the last logfile created.  You may also use
+# the special call &get_logfile(1) which returns the same as &get_logfile(1).
+
+&compare_output($answer,&get_logfile(1));
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/functions/call b/src/kmk/tests/scripts/functions/call
new file mode 100644
index 0000000..dc1a623
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/call
@@ -0,0 +1,92 @@
+#                                                                    -*-perl-*-
+$description = "Test the call function.\n";
+
+$details = "Try various uses of call and ensure they all give the correct
+results.\n";
+
+run_make_test(q!
+# Simple, just reverse two things
+#
+reverse = $2 $1
+
+# A complex 'map' function, using recursive 'call'.
+#
+map = $(foreach a,$2,$(call $1,$a))
+
+# Test using a builtin; this is silly as it's simpler to do without call
+#
+my-notdir = $(call notdir,$(1))
+
+# Test using non-expanded builtins
+#
+my-foreach = $(foreach $(1),$(2),$(3))
+my-if      = $(if $(1),$(2),$(3))
+
+# Test recursive invocations of call with different arguments
+#
+one = $(1) $(2) $(3)
+two = $(call one,$(1),foo,$(2))
+
+# Test recursion on the user-defined function.  As a special case make
+# won't error due to this.
+# Implement transitive closure using $(call ...)
+#
+DEP_foo = bar baz quux
+DEP_baz = quux blarp
+rest = $(wordlist 2,$(words ${1}),${1})
+tclose = $(if $1,$(firstword $1)\
+		$(call tclose,$(sort ${DEP_$(firstword $1)} $(call rest,$1))))
+
+all: ; @echo '$(call reverse,bar,foo)'; \
+        echo '$(call map,origin,MAKE reverse map)'; \
+        echo '$(call my-notdir,a/b   c/d      e/f)'; \
+        echo '$(call my-foreach)'; \
+        echo '$(call my-foreach,a,,,)'; \
+        echo '$(call my-if,a,b,c)'; \
+        echo '$(call two,bar,baz)'; \
+	echo '$(call tclose,foo)';
+!,
+              "", "foo bar\ndefault file file\nb d f\n\n\nb\nbar foo baz\nfoo bar baz blarp quux \n");
+
+# These won't work because call expands all its arguments first, before
+# passing them on, then marks them as resolved/simple, so they're not
+# expanded again by the function.
+#
+#        echo '$(call my-foreach,a,x y z,$$(a)$$(a))'; \
+#        echo '$(call my-if,,$$(info don't print this),$$(info do print this))'
+#
+# $answer = "xx yy zz\ndo print this\n";
+
+# TEST eclipsing of arguments when invoking sub-calls
+
+run_make_test(q!
+all = $1 $2 $3 $4 $5 $6 $7 $8 $9
+
+level1 = $(call all,$1,$2,$3,$4,$5)
+level2 = $(call level1,$1,$2,$3)
+level3 = $(call level2,$1,$2,$3,$4,$5)
+
+all:
+	@echo $(call all,1,2,3,4,5,6,7,8,9,10,11)
+	@echo $(call level1,1,2,3,4,5,6,7,8)
+	@echo $(call level2,1,2,3,4,5,6,7,8)
+	@echo $(call level3,1,2,3,4,5,6,7,8)
+!,
+              "", "1 2 3 4 5 6 7 8 9\n1 2 3 4 5\n1 2 3\n1 2 3\n");
+
+# Ensure that variables are defined in global scope even in a $(call ...)
+
+delete $ENV{X123};
+
+run_make_test('
+tst = $(eval export X123)
+$(call tst)
+all: ; @echo "$${X123-not set}"
+',
+              '', "\n");
+
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/functions/dir b/src/kmk/tests/scripts/functions/dir
new file mode 100644
index 0000000..f48fb8c
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/dir
@@ -0,0 +1,44 @@
+$description = "The following test creates a makefile to test the dir "
+              ."function.";
+
+$details = "";
+
+# IF YOU NEED >1 MAKEFILE FOR THIS TEST, USE &get_tmpfile; TO GET
+# THE NAME OF THE MAKEFILE.  THIS INSURES CONSISTENCY AND KEEPS TRACK OF
+# HOW MANY MAKEFILES EXIST FOR EASY DELETION AT THE END.
+# EXAMPLE: $makefile2 = &get_tmpfile;
+
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "string := \$(dir src${pathsep}foo.c hacks) \n"
+              ."all: \n"
+              ."\t\@echo \$(string) \n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile,"",&get_logfile,0);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "src${pathsep} .${pathsep}\n";
+
+# COMPARE RESULTS
+
+# In this call to compare output, you should use the call &get_logfile(1)
+# to send the name of the last logfile created.  You may also use
+# the special call &get_logfile(1) which returns the same as &get_logfile(1).
+
+&compare_output($answer,&get_logfile(1));
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/functions/error b/src/kmk/tests/scripts/functions/error
new file mode 100644
index 0000000..998afe4
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/error
@@ -0,0 +1,71 @@
+#                                                                    -*-Perl-*-
+
+$description = "\
+The following test creates a makefile to test the error function.";
+
+$details = "";
+
+open(MAKEFILE,"> $makefile");
+
+print MAKEFILE 'err = $(error Error found!)
+
+ifdef ERROR1
+$(error error is $(ERROR1))
+endif
+
+ifdef ERROR2
+$(error error is $(ERROR2))
+endif
+
+ifdef ERROR3
+all: some; @echo $(error error is $(ERROR3))
+endif
+
+ifdef ERROR4
+all: some; @echo error is $(ERROR4)
+	@echo $(error error is $(ERROR4))
+endif
+
+some: ; @echo Some stuff
+
+testvar: ; @: $(err)
+';
+
+close(MAKEFILE);
+
+# Test #1
+
+&run_make_with_options($makefile, "ERROR1=yes", &get_logfile, 512);
+$answer = "$makefile:4: *** error is yes.  Stop.\n";
+&compare_output($answer,&get_logfile(1));
+
+# Test #2
+
+&run_make_with_options($makefile, "ERROR2=no", &get_logfile, 512);
+$answer = "$makefile:8: *** error is no.  Stop.\n";
+&compare_output($answer,&get_logfile(1));
+
+# Test #3
+
+&run_make_with_options($makefile, "ERROR3=maybe", &get_logfile, 512);
+$answer = "Some stuff\n$makefile:12: *** error is maybe.  Stop.\n";
+&compare_output($answer,&get_logfile(1));
+
+# Test #4
+
+&run_make_with_options($makefile, "ERROR4=definitely", &get_logfile, 512);
+$answer = "Some stuff\n$makefile:17: *** error is definitely.  Stop.\n";
+&compare_output($answer,&get_logfile(1));
+
+# Test #5
+
+&run_make_with_options($makefile, "testvar", &get_logfile, 512);
+$answer = "$makefile:22: *** Error found!.  Stop.\n";
+&compare_output($answer,&get_logfile(1));
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/functions/eval b/src/kmk/tests/scripts/functions/eval
new file mode 100644
index 0000000..90513bd
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/eval
@@ -0,0 +1,169 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the eval function.";
+
+$details = "This is a test of the eval function in GNU make.
+This function will evaluate inline makefile syntax and incorporate the
+results into its internal database.\n";
+
+open(MAKEFILE,"> $makefile");
+
+print MAKEFILE <<'EOF';
+define Y
+  all:: ; @echo $AA
+  A = B
+endef
+
+X = $(eval $(value Y))
+
+$(eval $(shell echo A = A))
+$(eval $(Y))
+$(eval A = C)
+$(eval $(X))
+EOF
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile, "", &get_logfile);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "AA\nBA\n";
+
+&compare_output($answer,&get_logfile(1));
+
+# Test to make sure defining variables when we have extra scope pushed works
+# as expected.
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE,"> $makefile2");
+
+print MAKEFILE <<'EOF';
+VARS = A B
+
+VARSET = $(1) = $(2)
+
+$(foreach v,$(VARS),$(eval $(call VARSET,$v,$v)))
+
+all: ; @echo A = $(A) B = $(B)
+EOF
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile2, "", &get_logfile);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "A = A B = B\n";
+
+&compare_output($answer,&get_logfile(1));
+
+# Test to make sure eval'ing inside conditionals works properly
+
+$makefile3 = &get_tmpfile;
+
+open(MAKEFILE,"> $makefile3");
+
+print MAKEFILE <<'EOF';
+FOO = foo
+
+all:: ; @echo it
+
+define Y
+  all:: ; @echo worked
+endef
+
+ifdef BAR
+$(eval $(Y))
+endif
+
+EOF
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile3, "", &get_logfile);
+$answer = "it\n";
+&compare_output($answer,&get_logfile(1));
+
+&run_make_with_options($makefile3, "BAR=1", &get_logfile);
+$answer = "it\nworked\n";
+&compare_output($answer,&get_logfile(1));
+
+
+# TEST very recursive invocation of eval
+
+$makefile3 = &get_tmpfile;
+
+open(MAKEFILE,"> $makefile3");
+
+print MAKEFILE <<'EOF';
+..9 := 0 1 2 3 4 5 6 7 8 9
+rev=$(eval res:=)$(foreach word,$1,$(eval res:=${word} ${res}))${res}
+a:=$(call rev,${..9})
+all: ; @echo '[$(a)]'
+
+EOF
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile3, "", &get_logfile);
+$answer = "[         9 8 7 6 5 4 3 2 1 0 ]\n";
+&compare_output($answer,&get_logfile(1));
+
+
+# TEST eval with no filename context.
+# The trick here is that because EVAR is taken from the environment, it must
+# be evaluated before every command is invoked.  Make sure that works, when
+# we have no file context for reading_file (bug # 6195)
+
+$makefile4 = &get_tmpfile;
+
+open(MAKEFILE,"> $makefile4");
+
+print MAKEFILE <<'EOF';
+EVAR = $(eval FOBAR = 1)
+all: ; @echo "OK"
+
+EOF
+
+close(MAKEFILE);
+
+$extraENV{EVAR} = '1';
+&run_make_with_options($makefile4, "", &get_logfile);
+$answer = "OK\n";
+&compare_output($answer,&get_logfile(1));
+
+
+# Clean out previous information to allow new run_make_test() interface.
+# If we ever convert all the above to run_make_test() we can remove this line.
+$makefile = undef;
+
+# Test handling of backslashes in strings to be evaled.
+
+run_make_test('
+define FOO
+all: ; @echo hello \
+world
+endef
+$(eval $(FOO))
+', '', 'hello world');
+
+run_make_test('
+define FOO
+all: ; @echo '."'".'he\llo'."'".'
+	@echo world
+endef
+$(eval $(FOO))
+', '', 'he\llo
+world');
+
+
+# We don't allow new target/prerequisite relationships to be defined within a
+# command script, because these are evaluated after snap_deps() and that
+# causes lots of problems (like core dumps!)
+# See Savannah bug # 12124.
+
+run_make_test('deps: ; $(eval deps: foo)', '',
+              '#MAKEFILE#:1: *** prerequisites cannot be defined in recipes.  Stop.',
+              512);
+
+1;
diff --git a/src/kmk/tests/scripts/functions/evalcall b/src/kmk/tests/scripts/functions/evalcall
new file mode 100644
index 0000000..f0213c2
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/evalcall
@@ -0,0 +1,119 @@
+# $Id: evalcall 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(evalcall var,argN...)
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(evalcall ) function";
+
+$details = "A few simple tests, nothing spectacular.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+FUNC = local .RETURN = $2 $1
+ifneq ($(evalcall FUNC,a,b),b a)
+$(error sub-test 0 failed: $(evalcall FUNC,a,b))
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+
+FUNC = local .RETURN = $2 $1
+ifneq ($(evalcall FUNC,a,b),b a)
+$(error sub-test 0 failed)
+endif
+
+ADD = local .RETURN = $(expr $1 + $2)
+ifneq ($(evalcall ADD,1,2),3)
+$(error sub-test 1 failed)
+endif
+
+define POP
+local words := $(words $($1))
+local .RETURN := $(word $(words), $($1))
+$1 := $(wordlist 1, $(expr $(words) - 1), $($1))
+endef
+stack-var = a b c d
+ifneq ($(evalcall POP,stack-var),d)
+$(error sub-test 2d failed)
+endif
+ifneq ($(evalcall POP,stack-var),c)
+$(error sub-test 2c failed)
+endif
+ifneq ($(evalcall POP,stack-var),b)
+$(error sub-test 2b failed)
+endif
+ifneq ($(evalcall POP,stack-var),a)
+$(error sub-test 2a failed)
+endif
+
+
+# Negative tests:
+
+.RETURN = $2 $1
+FUNC =
+ifneq ($(evalcall FUNC,a,b),)
+$(error sub-test 10 failed)
+endif
+
+.RETURN =
+FUNC = .RETURN = $2 $1
+ifneq ($(evalcall FUNC,a,b),)
+$(error sub-test 11 failed)
+endif
+
+
+# Test .ARGC:
+
+FUNC = local .RETURN = $(.ARGC)
+ifneq ($(evalcall FUNC,a,b),2)
+$(error sub-test 20 failed)
+endif
+ifneq ($(evalcall FUNC),0)
+$(error sub-test 21 failed)
+endif
+ifneq ($(evalcall FUNC,aasdfasdf),1)
+$(error sub-test 22 failed)
+endif
+
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/expr b/src/kmk/tests/scripts/functions/expr
new file mode 100644
index 0000000..a68205f
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/expr
@@ -0,0 +1,74 @@
+# $Id: expr 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(expr expr)
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the \$(expr ) function";
+
+$details = "Much of the basic testing is taken care of by features/ifcond.
+We only make sure \$(expr ) works here).";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(expr 1+1),2)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - basics, the $(expr test checks the rest).
+   # ---------------------------------------------------
+   run_make_test('
+ifneq ($(expr 1==1),1)
+$(error sub-test 0 failed)
+endif
+ifneq ($(expr 1!=1),0)
+$(error sub-test 1 failed)
+endif
+ifneq ($(expr 2*2),4)
+$(error sub-test 1 failed)
+endif
+ifneq ($(expr 25*25),625)
+$(error sub-test 1 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+}
+
+
+
+# Indicate that we're done.
+1;
+
+
diff --git a/src/kmk/tests/scripts/functions/file b/src/kmk/tests/scripts/functions/file
new file mode 100644
index 0000000..904db79
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/file
@@ -0,0 +1,161 @@
+#                                                                    -*-perl-*-
+
+$description = 'Test the $(file ...) function.';
+
+# Test > and >>
+run_make_test(q!
+define A
+a
+b
+endef
+B = c d
+$(file >file.out,$(A))
+$(foreach L,$(B),$(file >>     file.out,$L))
+x:;@echo hi; cat file.out
+!,
+              '', "hi\na\nb\nc\nd");
+
+unlink('file.out');
+
+# Test >> to a non-existent file
+run_make_test(q!
+define A
+a
+b
+endef
+$(file     >>     file.out,$(A))
+x:;@cat file.out
+!,
+              '', "a\nb");
+
+unlink('file.out');
+
+# Test > with no content
+run_make_test(q!
+$(file >4touch)
+.PHONY:x
+x:;@cat 4touch
+!,
+              '', '');
+
+# Test >> with no content
+run_make_test(q!
+$(file >>4touch)
+.PHONY:x
+x:;@cat 4touch
+!,
+              '', '');
+unlink('4touch');
+
+# Test > to a read-only file
+touch('file.out');
+chmod(0444, 'file.out');
+
+# Find the error that will be printed
+# This seems complicated, but we need the message from the C locale
+my $loc = undef;
+if ($has_POSIX) {
+    $loc = POSIX::setlocale(POSIX::LC_MESSAGES);
+    POSIX::setlocale(POSIX::LC_MESSAGES, 'C');
+}
+my $e;
+open(my $F, '>', 'file.out') and die "Opened read-only file!\n";
+$e = "$!";
+$loc and POSIX::setlocale(POSIX::LC_MESSAGES, $loc);
+
+run_make_test(q!
+define A
+a
+b
+endef
+$(file     >     file.out,$(A))
+x:;@cat file.out
+!,
+              '', "#MAKEFILE#:6: *** open: file.out: $e.  Stop.",
+              512);
+
+unlink('file.out');
+
+# Use variables for operator and filename
+run_make_test(q!
+define A
+a
+b
+endef
+OP = >
+FN = file.out
+$(file     $(OP)     $(FN),$(A))
+x:;@cat file.out
+!,
+              '', "a\nb");
+
+unlink('file.out');
+
+# Don't add newlines if one already exists
+run_make_test(q!
+define A
+a
+b
+
+endef
+$(file >file.out,$(A))
+x:;@cat file.out
+!,
+              '', "a\nb");
+
+unlink('file.out');
+
+# Empty text
+run_make_test(q!
+$(file >file.out,)
+$(file >>file.out,)
+x:;@cat file.out
+!,
+              '', "\n\n");
+
+unlink('file.out');
+
+# Reading files
+run_make_test(q!
+$(file >file.out,A = foo)
+X1 := $(file <file.out)
+$(file >>file.out,B = bar)
+$(eval $(file <file.out))
+
+x:;@echo '$(X1)'; echo '$(A)'; echo '$(B)'
+!,
+              '', "A = foo\nfoo\nbar\n");
+
+unlink('file.out');
+
+# Reading from non-existent file
+run_make_test(q!
+X1 := $(file <file.out)
+x:;@echo '$(X1)';
+!,
+              '', "\n");
+
+# Extra arguments in read mode
+run_make_test(q!
+X1 := $(file <file.out,foo)
+x:;@echo '$(X1)';
+!,
+              '', "#MAKEFILE#:2: *** file: too many arguments.  Stop.\n", 512);
+
+
+# Missing filename
+run_make_test('$(file >)', '',
+              "#MAKEFILE#:1: *** file: missing filename.  Stop.\n", 512);
+
+run_make_test('$(file >>)', '',
+              "#MAKEFILE#:1: *** file: missing filename.  Stop.\n", 512);
+
+run_make_test('$(file <)', '',
+              "#MAKEFILE#:1: *** file: missing filename.  Stop.\n", 512);
+
+# Bad call
+
+run_make_test('$(file foo)', '',
+              "#MAKEFILE#:1: *** file: invalid file operation: foo.  Stop.\n", 512);
+
+1;
diff --git a/src/kmk/tests/scripts/functions/filter-out b/src/kmk/tests/scripts/functions/filter-out
new file mode 100644
index 0000000..1fe4819
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/filter-out
@@ -0,0 +1,42 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the filter and filter-out functions.";
+
+$details = "The makefile created in this test has two variables.  The
+filter-out function is first used to discard names ending in
+.o with a single simple pattern.  The second filter-out function
+augments the simple pattern with three literal names, which are
+also added to the text argument.  This tests an internal hash table
+which is only used if there are multiple literals present in both
+the pattern and text arguments.  The result of both filter-out
+functions is the same single .elc name.\n";
+
+# Basic test -- filter
+run_make_test(q!
+files1 := $(filter %.o, foo.elc bar.o lose.o)
+files2 := $(filter %.o foo.i, foo.i bar.i lose.i foo.elc bar.o lose.o)
+all: ; @echo '$(files1) $(files2)'
+!,
+              '', "bar.o lose.o foo.i bar.o lose.o\n");
+
+# Basic test -- filter-out
+run_make_test(q!
+files1 := $(filter-out %.o, foo.elc bar.o lose.o)
+files2 := $(filter-out foo.i bar.i lose.i %.o, foo.i bar.i lose.i foo.elc bar.o lose.o)
+all: ; @echo '$(files1) $(files2)'
+!,
+              '', "foo.elc foo.elc\n");
+
+# Escaped patterns
+run_make_test(q!all:;@echo '$(filter foo\%bar,foo%bar fooXbar)'!,
+              '', "foo%bar\n");
+
+run_make_test(q!all:;@echo '$(filter foo\%\%\\\\\%\%bar,foo%%\\%%bar fooX\\Ybar)'!,
+              '', "foo%%\\%%bar\n");
+
+run_make_test(q!
+X = $(filter foo\\\\\%bar,foo\%bar foo\Xbar)
+all:;@echo '$(X)'!,
+              '', "foo\\%bar\n");
+
+1;
diff --git a/src/kmk/tests/scripts/functions/findstring b/src/kmk/tests/scripts/functions/findstring
new file mode 100644
index 0000000..48abede
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/findstring
@@ -0,0 +1,47 @@
+$description = "The following test creates a makefile to test the findstring "
+              ."function.";
+
+$details = "";
+
+# IF YOU NEED >1 MAKEFILE FOR THIS TEST, USE &get_tmpfile; TO GET
+# THE NAME OF THE MAKEFILE.  THIS INSURES CONSISTENCY AND KEEPS TRACK OF
+# HOW MANY MAKEFILES EXIST FOR EASY DELETION AT THE END.
+# EXAMPLE: $makefile2 = &get_tmpfile;
+
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "string := \$(findstring port, reporter)\n"
+              ."all: \n"
+              ."\t\@echo \$(string) \n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile,
+                       "",
+                       &get_logfile,
+                       0);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "port\n";
+
+# COMPARE RESULTS
+
+# In this call to compare output, you should use the call &get_logfile(1)
+# to send the name of the last logfile created.  You may also use
+# the special call &get_logfile(1) which returns the same as &get_logfile(1).
+
+&compare_output($answer,&get_logfile(1));
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/functions/flavor b/src/kmk/tests/scripts/functions/flavor
new file mode 100644
index 0000000..80d6be7
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/flavor
@@ -0,0 +1,44 @@
+#                                                                    -*-perl-*-
+$description = "Test the flavor function.";
+
+$details = "";
+
+
+# Test #1: Test general logic.
+#
+run_make_test('
+s := s
+r = r
+
+$(info u $(flavor u))
+$(info s $(flavor s))
+$(info r $(flavor r))
+
+ra += ra
+rc ?= rc
+
+$(info ra $(flavor ra))
+$(info rc $(flavor rc))
+
+s += s
+r += r
+
+$(info s $(flavor s))
+$(info r $(flavor r))
+
+
+.PHONY: all
+all:;@:
+',
+'',
+'u undefined
+s simple
+r recursive
+ra recursive
+rc recursive
+s simple
+r recursive');
+
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/functions/for b/src/kmk/tests/scripts/functions/for
new file mode 100644
index 0000000..0152395
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/for
@@ -0,0 +1,69 @@
+# $Id: for 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(for init,condition,next,body)
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(for ) loop function";
+
+$details = "A few simple tests, nothing spectacular.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(for local i=0, $i <= 10, local i := $(expr $i + 1),$i),0 1 2 3 4 5 6 7 8 9 10)
+$(error sub-test 0 failed:$(for local i=0, $i <= 10, local i := $(expr $i + 1),$i))
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+ifneq ($(for local i=0, $i <= 10, local i := $(expr $i + 1),$i),0 1 2 3 4 5 6 7 8 9 10)
+$(error sub-test 0 failed)
+endif
+ifneq (.$(for local i=0, $i <= 3, local i := $(expr $i + 1), $i ).,. 0   1   2   3 .)
+$(error sub-test 1 failed)
+endif
+ifneq (.$(foreach i,0 1 2 3, $i ).,. 0   1   2   3 .)
+$(error sub-test 1b failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/foreach b/src/kmk/tests/scripts/functions/foreach
new file mode 100644
index 0000000..88ef0a7
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/foreach
@@ -0,0 +1,97 @@
+#                                                                    -*-perl-*-
+# $Id$
+
+$description = "Test the foreach function.";
+
+$details = "This is a test of the foreach function in gnu make.
+This function starts with a space separated list of
+names and a variable. Each name in the list is subsituted
+into the variable and the given text evaluated. The general
+form of the command is $(foreach var,$list,$text). Several
+types of foreach loops are tested\n";
+
+
+# TEST 0
+
+# Set an environment variable that we can test in the makefile.
+# kmk: CC isn't a default.
+$extraENV{FOOFOO} = 'foo foo';
+$CC_origin = $is_kmk ? "undefined" : "default";
+
+run_make_test("space = ' '".'
+null :=
+auto_var = udef space CC null FOOFOO MAKE foo CFLAGS WHITE @ <
+foo = bletch null @ garf
+av = $(foreach var, $(auto_var), $(origin $(var)) )
+override WHITE := BLACK
+for_var = $(addsuffix .c,foo $(null) $(foo) $(space) $(av) )
+fe = $(foreach var2, $(for_var),$(subst .c,.o, $(var2) ) )
+all: auto for2
+auto : ; @echo $(av)
+for2: ; @echo $(fe)',
+              '-j1 -e WHITE=WHITE CFLAGS=',
+              "undefined file ". $CC_origin ." file environment default file command line override automatic automatic
+foo.o bletch.o null.o @.o garf.o .o    .o undefined.o file.o ". $CC_origin .".o file.o environment.o default.o file.o command.o line.o override.o automatic.o automatic.o");
+
+delete $extraENV{FOOFOO};
+
+# TEST 1: Test that foreach variables take precedence over global
+# variables in a global scope (like inside an eval).  Tests bug #11913
+
+run_make_test('
+.PHONY: all target
+all: target
+
+x := BAD
+
+define mktarget
+target: x := $(x)
+target: ; @echo "$(x)"
+endef
+
+x := GLOBAL
+
+$(foreach x,FOREACH,$(eval $(value mktarget)))',
+              '',
+              'FOREACH');
+
+# Allow variable names with trailing space
+run_make_test(q!
+$(foreach \
+  a \
+, b c d \
+, $(info $a))
+all:;@:
+!,
+              "", "b\nc\nd\n");
+
+# Allow empty variable names.  We still expand the body.
+
+run_make_test('
+x = $(foreach ,1 2 3,a)
+y := $x
+
+all: ; @echo $y',
+              '', "a a a\n");
+
+# Check some error conditions.
+
+run_make_test('
+x = $(foreach )
+y = $x
+
+all: ; @echo $y',
+              '',
+              "#MAKEFILE#:2: *** insufficient number of arguments (1) to function 'foreach'.  Stop.",
+              512);
+
+run_make_test('
+x = $(foreach x,y)
+y := $x
+
+all: ; @echo $y',
+              '',
+              "#MAKEFILE#:2: *** insufficient number of arguments (2) to function 'foreach'.  Stop.",
+              512);
+
+1;
diff --git a/src/kmk/tests/scripts/functions/guile b/src/kmk/tests/scripts/functions/guile
new file mode 100644
index 0000000..c63bec9
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/guile
@@ -0,0 +1,99 @@
+#                                                                    -*-perl-*-
+
+$description = 'Test the $(guile ...) function.';
+
+$details = 'This only works on systems that support it.';
+
+# If this instance of make doesn't support GNU Guile, skip it
+# This detects if guile is loaded using the "load" directive
+# $makefile = get_tmpfile();
+# open(MAKEFILE, "> $makefile") || die "Failed to open $makefile: $!\n";
+# print MAKEFILE q!
+# -load guile
+# all: ; @echo $(filter guile,$(.LOADED))
+# !;
+# close(MAKEFILE) || die "Failed to write $makefile: $!\n";
+# $cmd = subst_make_string("#MAKEPATH# -f $makefile");
+# $log = get_logfile(0);
+# $code = run_command_with_output($log, $cmd);
+# read_file_into_string ($log) eq "guile\n" and $FEATURES{guile} = 1;
+
+# If we don't have Guile support, never mind.
+exists $FEATURES{guile} or return -1;
+
+# Verify simple data type conversions
+# Currently we don't support vectors:
+#    echo '$(guile (vector 1 2 3))'; \
+run_make_test(q!
+x:;@echo '$(guile #f)'; \
+    echo '$(guile #t)'; \
+    echo '$(guile #\c)'; \
+    echo '$(guile 1234)'; \
+    echo '$(guile 'foo)'; \
+    echo '$(guile "bar")'; \
+    echo '$(guile (cons 'a 'b))'; \
+    echo '$(guile '(a b (c . d) 1 (2) 3))'
+!,
+              '', "\n#t\nc\n1234\nfoo\nbar\na b\na b c d 1 2 3");
+
+# Verify the gmk-expand function
+run_make_test(q!
+VAR = $(guile (gmk-expand "$(shell echo hi)"))
+x:;@echo '$(VAR)'
+!,
+              '', "hi");
+
+# Verify the gmk-eval function
+# Prove that the string is expanded only once (by eval)
+run_make_test(q!
+TEST = bye
+EVAL = VAR = $(TEST) $(shell echo there)
+$(guile (gmk-eval "$(value EVAL)"))
+TEST = hi
+x:;@echo '$(VAR)'
+!,
+              '', "hi there");
+
+# Verify the gmk-eval function with a list
+run_make_test(q!
+$(guile (gmk-eval '(VAR = 1 (2) () 3)))
+x:;@echo '$(VAR)'
+!,
+              '', "1 2 3");
+
+# Verify the gmk-var function
+run_make_test(q!
+VALUE = hi $(shell echo there)
+VAR = $(guile (gmk-var "VALUE"))
+x:;@echo '$(VAR)'
+!,
+              '', "hi there");
+
+# Verify the gmk-var function with a symbol
+run_make_test(q!
+VALUE = hi $(shell echo there)
+VAR = $(guile (gmk-var 'VALUE))
+x:;@echo '$(VAR)'
+!,
+              '', "hi there");
+
+# Write a Guile program using define and run it
+run_make_test(q!
+# Define the "fib" function in Guile
+define fib
+;; A procedure for counting the n:th Fibonacci number
+;; See SICP, p. 37
+(define (fib n)
+  (cond ((= n 0) 0)
+        ((= n 1) 1)
+        (else (+ (fib (- n 1))
+                 (fib (- n 2))))))
+endef
+$(guile $(fib))
+
+# Now run it
+x:;@echo $(guile (fib $(FIB)))
+!,
+              'FIB=10', "55");
+
+1;
diff --git a/src/kmk/tests/scripts/functions/if b/src/kmk/tests/scripts/functions/if
new file mode 100644
index 0000000..8604e4f
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/if
@@ -0,0 +1,33 @@
+#                                                                    -*-perl-*-
+$description = "Test the if function.\n";
+
+$details = "Try various uses of if and ensure they all give the correct
+results.\n";
+
+open(MAKEFILE, "> $makefile");
+
+print MAKEFILE <<EOMAKE;
+NEQ = \$(subst \$1,,\$2)
+e =
+
+all:
+\t\@echo 1 \$(if    ,true,false)
+\t\@echo 2 \$(if ,true,)
+\t\@echo 3 \$(if ,true)
+\t\@echo 4 \$(if z,true,false)
+\t\@echo 5 \$(if z,true,\$(shell echo hi))
+\t\@echo 6 \$(if ,\$(shell echo hi),false)
+\t\@echo 7 \$(if \$(call NEQ,a,b),true,false)
+\t\@echo 8 \$(if \$(call NEQ,a,a),true,false)
+\t\@echo 9 \$(if z,true,fal,se) hi
+\t\@echo 10 \$(if ,true,fal,se)there
+\t\@echo 11 \$(if \$(e) ,true,false)
+EOMAKE
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile, "", &get_logfile);
+$answer = "1 false\n2\n3\n4 true\n5 true\n6 false\n7 true\n8 false\n9 true hi\n10 fal,sethere\n11 false\n";
+&compare_output($answer, &get_logfile(1));
+
+1;
diff --git a/src/kmk/tests/scripts/functions/if-expr b/src/kmk/tests/scripts/functions/if-expr
new file mode 100644
index 0000000..764522d
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/if-expr
@@ -0,0 +1,84 @@
+# $Id: if-expr 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(if-expr expr, if-expand, else-expand)
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the \$(if-expr ) function";
+
+$details = "A few simple tests, nothing spectacular. More comprehensive testing
+is preformed by functions/expr and features/ifcond.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(if-expr 1+1,1,0),1)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - basics, the $(expr test checks the rest).
+   # ---------------------------------------------------
+   run_make_test('
+IF-EXPAND = 7
+ELSE-EXPAND = -7
+ifneq ($(if-expr 1==1,$(IF-EXPAND),$(ELSE-EXPAND)),7)
+$(error sub-test 0 failed)
+endif
+ifneq ($(if-expr 1!=1,$(IF-EXPAND),$(ELSE-EXPAND)),-7)
+$(error sub-test 1 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+
+   # TEST #2 - Checks that the optional 3 argument can be omitted.
+   # -------------------------------------------------------------
+   run_make_test('
+ifneq ($(if-expr 1==1,true),true)
+$(error sub-test 0 failed)
+endif
+ifneq ($(if-expr 2==1,true),)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+}
+
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/insert b/src/kmk/tests/scripts/functions/insert
new file mode 100644
index 0000000..6a597c6
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/insert
@@ -0,0 +1,106 @@
+# $Id: insert 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(insert in, str[, n[, length[, pad]]])
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(insert ) function";
+
+$details = "Testing edges and some simple stuff.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(insert a,b),ab)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+ifneq ($(insert a,b,1),ab)
+$(error sub-test 0 failed)
+endif
+ifneq ($(insert a,b,2),ba)
+$(error sub-test 1 failed)
+endif
+ifneq ($(insert a,b,3),b a)
+$(error sub-test 2 failed)
+endif
+ifneq ($(insert a,b,0),ba)
+$(error sub-test 3 failed)
+endif
+ifneq ($(insert a,b,-1),ab)
+$(error sub-test 4 failed)
+endif
+ifneq ($(insert a,b,-2),ab)
+$(error sub-test 5 failed)
+endif
+ifneq ($(insert a,b,-10),ab)
+$(error sub-test 6 failed)
+endif
+
+ifneq ($(insert a,b,-10,0),b)
+$(error sub-test 10 failed)
+endif
+ifneq ($(insert aAAA,b,4,1),b  a)
+$(error sub-test 11 failed)
+endif
+ifneq ($(insert a,bBbBbBb,4,4),bBba   BbBb)
+$(error sub-test 12 failed)
+endif
+
+ifneq ($(insert a,bBbBbBb,4,4,z),bBbazzzBbBb)
+$(error sub-test 20 failed)
+endif
+ifneq ($(insert a,bBbBbBb,4,4,xy),bBbaxyxBbBb)
+$(error sub-test 21 failed)
+endif
+ifneq ($(insert a,bBbBbBb,4,4,xyz),bBbaxyzBbBb)
+$(error sub-test 22 failed)
+endif
+ifneq ($(insert a,bBbBbBb,4,4,xyzXYZ),bBbaxyzBbBb)
+$(error sub-test 23 failed)
+endif
+ifneq ($(insert a,bBbBbBb,4,4,),bBba   BbBb)
+$(error sub-test 24 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/intersects b/src/kmk/tests/scripts/functions/intersects
new file mode 100644
index 0000000..8d136fb
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/intersects
@@ -0,0 +1,94 @@
+# $Id: intersects 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(intersects set-a,set-b)
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(intersecs ) predicate function";
+
+$details = "A few simple tests, nothing spectacular.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(intersects a b c d e f, a),1)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+ifneq ($(intersects a b c d e f, f),1)
+$(error sub-test 0 failed)
+endif
+ifneq ($(intersects a b c d e f, f),1)
+$(error sub-test 1 failed)
+endif
+ifneq ($(intersects a b c d e f, d),1)
+$(error sub-test 2 failed)
+endif
+ifneq ($(intersects b c d e f, a),)
+$(error sub-test 3 failed)
+endif
+ifneq ($(intersects a b c d e f, a b c d e f),1)
+$(error sub-test 4 failed)
+endif
+ifneq ($(intersects a b c d e f, f e d c b a),1)
+$(error sub-test 5 failed)
+endif
+ifneq ($(intersects f e d c b a, a b c d e f),1)
+$(error sub-test 6 failed)
+endif
+
+SET-A = make foo bar
+SET-B = $(SET-A)
+ifeq ($(intersects $(SET-A),$(SET-B)),)
+$(error sub-test 7 failed)
+endif
+SET-B = foo
+ifeq ($(intersects $(SET-A),$(SET-B)),)
+$(error sub-test 8 failed)
+endif
+SET-B = foobar
+ifneq ($(intersects $(SET-A),$(SET-B)),)
+$(error sub-test 9 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/join b/src/kmk/tests/scripts/functions/join
new file mode 100644
index 0000000..302c307
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/join
@@ -0,0 +1,44 @@
+$description = "The following test creates a makefile to test the join "
+              ."function.";
+
+$details = "";
+
+# IF YOU NEED >1 MAKEFILE FOR THIS TEST, USE &get_tmpfile; TO GET
+# THE NAME OF THE MAKEFILE.  THIS INSURES CONSISTENCY AND KEEPS TRACK OF
+# HOW MANY MAKEFILES EXIST FOR EASY DELETION AT THE END.
+# EXAMPLE: $makefile2 = &get_tmpfile;
+
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "string := \$(join a b c,foo      hacks .pl1) \n"
+              ."all: \n"
+              ."\t\@echo \$(string) \n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile,"",&get_logfile,0);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "afoo bhacks c.pl1\n";
+
+# COMPARE RESULTS
+
+# In this call to compare output, you should use the call &get_logfile(1)
+# to send the name of the last logfile created.  You may also use
+# the special call &get_logfile(1) which returns the same as &get_logfile(1).
+
+&compare_output($answer,&get_logfile(1));
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/functions/lastpos b/src/kmk/tests/scripts/functions/lastpos
new file mode 100644
index 0000000..248db2b
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/lastpos
@@ -0,0 +1,118 @@
+# $Id: lastpos 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(lastpos needle, haystack[, start])
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(lastpos ) function";
+
+$details = "A few simple tests, nothing spectacular.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(lastpos b,abc),2)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+ifneq ($(lastpos t,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 0 failed)
+endif
+ifneq ($(lastpos tu,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 1 failed)
+endif
+ifneq ($(lastpos tuv,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 2 failed)
+endif
+ifneq ($(lastpos tuvw,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 3 failed)
+endif
+ifneq ($(lastpos tuvwx,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 4 failed)
+endif
+ifneq ($(lastpos tuvwxy,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 5 failed)
+endif
+ifneq ($(lastpos tuvwxyz,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 6 failed)
+endif
+ifneq ($(lastpos tuvwxyz!,abcdefghijklmnopqrstuvwxyz),0)
+$(error sub-test 7 failed)
+endif
+
+ifneq ($(lastpos a,ababababab),9)
+$(error sub-test 10 failed)
+endif
+ifneq ($(lastpos a,ababababab,8),7)
+$(error sub-test 11 failed)
+endif
+ifneq ($(lastpos a,ababababab,7),7)
+$(error sub-test 12 failed)
+endif
+ifneq ($(lastpos a,ababababab,4),3)
+$(error sub-test 13 failed)
+endif
+ifneq ($(lastpos a,ababababab,3),3)
+$(error sub-test 14 failed)
+endif
+ifneq ($(lastpos a,ababababab,2),1)
+$(error sub-test 15 failed)
+endif
+ifneq ($(lastpos a,ababababab,1),1)
+$(error sub-test 16 failed)
+endif
+ifneq ($(lastpos a,ababababab,-1),9)
+$(error sub-test 17 failed)
+endif
+ifneq ($(lastpos a,ababababab,-2),9)
+$(error sub-test 18 failed)
+endif
+ifneq ($(lastpos a,ababababab,-10),1)
+$(error sub-test 19 failed)
+endif
+ifneq ($(lastpos a,ababababab,-11),0)
+$(error sub-test 20 failed)
+endif
+
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/length b/src/kmk/tests/scripts/functions/length
new file mode 100644
index 0000000..c8ea34d
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/length
@@ -0,0 +1,71 @@
+# $Id: length 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(length text)
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(length ) function";
+
+$details = "A few simple tests, nothing spectacular.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(length abcd),4)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+ifneq ($(length   asdf),4)
+$(error sub-test 0 failed)
+endif
+ifneq ($(length a),1)
+$(error sub-test 1 failed)
+endif
+ifneq ($(length 0123456789),10)
+$(error sub-test 2 failed)
+endif
+ifneq ($(length 0123456789 ),11)
+$(error sub-test 3 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/length-var b/src/kmk/tests/scripts/functions/length-var
new file mode 100644
index 0000000..0583713
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/length-var
@@ -0,0 +1,75 @@
+# $Id: length-var 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(length-var var)
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(length-var ) function";
+
+$details = "A few simple tests, nothing spectacular.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(length-var non-existing-variable),0)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+VAR0 := asdf
+ifneq ($(length-var VAR0),4)
+$(error sub-test 0 failed)
+endif
+VAR1 = a
+ifneq ($(length-var VAR1),1)
+$(error sub-test 1 failed)
+endif
+VAR2 = 0123456789
+ifneq ($(length-var VAR2),10)
+$(error sub-test 2 failed)
+endif
+VAR2 = $(VAR1) $(VAR0)
+ifneq ($(length-var VAR2),15)
+$(error sub-test 3 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/notdir b/src/kmk/tests/scripts/functions/notdir
new file mode 100644
index 0000000..4ed8f9c
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/notdir
@@ -0,0 +1,44 @@
+$description = "The following test creates a makefile to test the notdir "
+              ."function.";
+
+$details = "";
+
+# IF YOU NEED >1 MAKEFILE FOR THIS TEST, USE &get_tmpfile; TO GET
+# THE NAME OF THE MAKEFILE.  THIS INSURES CONSISTENCY AND KEEPS TRACK OF
+# HOW MANY MAKEFILES EXIST FOR EASY DELETION AT THE END.
+# EXAMPLE: $makefile2 = &get_tmpfile;
+
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "string := \$(notdir ${pathsep}src${pathsep}foo.c hacks) \n"
+              ."all: \n"
+              ."\t\@echo \$(string) \n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile,"",&get_logfile,0);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "foo.c hacks\n";
+
+# COMPARE RESULTS
+
+# In this call to compare output, you should use the call &get_logfile(1)
+# to send the name of the last logfile created.  You may also use
+# the special call &get_logfile(1) which returns the same as &get_logfile(1).
+
+&compare_output($answer,&get_logfile(1));
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/functions/origin b/src/kmk/tests/scripts/functions/origin
new file mode 100644
index 0000000..7a6a9fa
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/origin
@@ -0,0 +1,54 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the origin function.";
+
+$details = "This is a test of the origin function in gnu make.
+This function will report on where a variable was
+defined per the following list:
+
+'undefined'            never defined
+'default'              default definition
+'environment'          environment var without -e
+'environment override' environment var with    -e
+'file'                 defined in makefile
+'command line'         defined on the command line
+'override'             defined by override in makefile
+'automatic'            Automatic variable\n";
+
+# kmk: CC isn't a default.
+$CC_origin = $is_kmk ? "undefined" : "default";
+
+# Set an environment variable
+$extraENV{MAKETEST} = 1;
+
+run_make_test('
+foo := bletch garf
+auto_var = undefined CC MAKETEST MAKE foo CFLAGS WHITE @
+av = $(foreach var, $(auto_var), $(origin $(var)) )
+override WHITE := BLACK
+all: auto
+	@echo $(origin undefined)
+	@echo $(origin CC)
+	@echo $(origin MAKETEST)
+	@echo $(origin MAKE)
+	@echo $(origin foo)
+	@echo $(origin CFLAGS)
+	@echo $(origin WHITE)
+	@echo $(origin @)
+auto :
+	@echo $(av)',
+	      '-e WHITE=WHITE CFLAGS=',
+	      'undefined '. $CC_origin .' environment default file command line override automatic
+undefined
+'. $CC_origin .'
+environment
+default
+file
+command line
+override
+automatic');
+
+# Reset an environment variable
+delete $extraENV{MAKETEST};
+
+1;
diff --git a/src/kmk/tests/scripts/functions/pos b/src/kmk/tests/scripts/functions/pos
new file mode 100644
index 0000000..bdc3d40
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/pos
@@ -0,0 +1,118 @@
+# $Id: pos 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(pos needle, haystack[, start])
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(pos ) function";
+
+$details = "A few simple tests, nothing spectacular.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(pos b,abc),2)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+ifneq ($(pos t,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 0 failed)
+endif
+ifneq ($(pos tu,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 1 failed)
+endif
+ifneq ($(pos tuv,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 2 failed)
+endif
+ifneq ($(pos tuvw,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 3 failed)
+endif
+ifneq ($(pos tuvwx,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 4 failed)
+endif
+ifneq ($(pos tuvwxy,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 5 failed)
+endif
+ifneq ($(pos tuvwxyz,abcdefghijklmnopqrstuvwxyz),20)
+$(error sub-test 6 failed)
+endif
+ifneq ($(pos tuvwxyz!,abcdefghijklmnopqrstuvwxyz),0)
+$(error sub-test 7 failed)
+endif
+
+ifneq ($(pos a,ababababab),1)
+$(error sub-test 10 failed)
+endif
+ifneq ($(pos a,ababababab,2),3)
+$(error sub-test 11 failed)
+endif
+ifneq ($(pos a,ababababab,3),3)
+$(error sub-test 12 failed)
+endif
+ifneq ($(pos a,ababababab,8),9)
+$(error sub-test 13 failed)
+endif
+ifneq ($(pos a,ababababab,8),9)
+$(error sub-test 14 failed)
+endif
+ifneq ($(pos a,ababababab,9),9)
+$(error sub-test 15 failed)
+endif
+ifneq ($(pos a,ababababab,10),0)
+$(error sub-test 16 failed)
+endif
+ifneq ($(pos a,ababababab,-1),0)
+$(error sub-test 17 failed)
+endif
+ifneq ($(pos a,ababababab,-2),9)
+$(error sub-test 18 failed)
+endif
+ifneq ($(pos a,ababababab,-10),1)
+$(error sub-test 19 failed)
+endif
+ifneq ($(pos a,ababababab,-11),0)
+$(error sub-test 20 failed)
+endif
+
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/printf b/src/kmk/tests/scripts/functions/printf
new file mode 100644
index 0000000..cb20168
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/printf
@@ -0,0 +1,80 @@
+# $Id: printf 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(printf fmt[,args...])
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(printf ) function";
+
+$details = "A few simple tests, nothing spectacular.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(printf abcd),abcd)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+ifneq ($(printf %s,abcde),abcde)
+$(error sub-test 0 failed)
+endif
+ifneq ($(printf %.4s,abcde),abcd)
+$(error sub-test 1 failed)
+endif
+ifneq ($(printf %.8s,abc),abc)
+$(error sub-test 2 failed)
+endif
+ifneq ($(printf %.2s%.3s,abc,zde),abzde)
+$(error sub-test 3 failed)
+endif
+define HASH
+#
+endef
+ifneq ($(printf %$(HASH)x,127),0x7f)
+$(error sub-test 4 failed)
+endif
+ifneq ($(printf %$(HASH)X,127),0X7F)
+$(error sub-test 5 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/realpath b/src/kmk/tests/scripts/functions/realpath
new file mode 100644
index 0000000..9b503b4
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/realpath
@@ -0,0 +1,82 @@
+#                                                                    -*-perl-*-
+$description = "Test the realpath functions.";
+
+$details = "";
+
+run_make_test('
+ifneq ($(realpath .),$(CURDIR))
+  $(error )
+endif
+
+ifneq ($(realpath ./),$(CURDIR))
+  $(error )
+endif
+
+ifneq ($(realpath .///),$(CURDIR))
+  $(error )
+endif
+
+ifneq ($(realpath /),/)
+  $(error )
+endif
+
+ifneq ($(realpath /.),/)
+  $(error )
+endif
+
+ifneq ($(realpath /./),/)
+  $(error )
+endif
+
+ifneq ($(realpath /.///),/)
+  $(error )
+endif
+
+ifneq ($(realpath /..),/)
+  $(error )
+endif
+
+ifneq ($(realpath /../),/)
+  $(error )
+endif
+
+ifneq ($(realpath /..///),/)
+  $(error )
+endif
+
+ifneq ($(realpath . /..),$(CURDIR) /)
+  $(error )
+endif
+
+.PHONY: all
+all: ; @:
+',
+              '',
+              '');
+
+# On Windows platforms, "//" means something special.  So, don't do these
+# tests there.
+
+if ($port_type ne 'W32') {
+  run_make_test('
+ifneq ($(realpath ///),/)
+  $(error )
+endif
+
+ifneq ($(realpath ///.),/)
+  $(error )
+endif
+
+ifneq ($(realpath ///..),/)
+  $(error )
+endif
+
+.PHONY: all
+all: ; @:',
+                '',
+                '');
+}
+
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/functions/root b/src/kmk/tests/scripts/functions/root
new file mode 100644
index 0000000..46abbd1
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/root
@@ -0,0 +1,172 @@
+# $Id: root 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(root path...)
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(path ) function";
+
+$details = "Testing edges and some simple stuff.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(root /a),/)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+ifneq ($(root /asdf/asdf/adsf),/)
+$(error sub-test 0 failed:$(root /asdf/asdf/adsf))
+endif
+ifneq ($(root asdf/asdf/adsf),)
+$(error sub-test 1 failed)
+endif
+ifneq ($(root asdf/asdf/adsf/),)
+$(error sub-test 2 failed)
+endif
+ifneq ($(root asdf/asdf/adsf/),)
+$(error sub-test 3 failed)
+endif
+ifneq ($(root a),)
+$(error sub-test 4 failed)
+endif
+ifneq ($(root ),)
+$(error sub-test 5 failed)
+endif
+ifneq ($(root //a),//)
+$(error sub-test 6 failed)
+endif
+ifneq ($(root /a),/)
+$(error sub-test 7 failed)
+endif
+ifneq ($(root ///a),///)
+$(error sub-test 8 failed)
+endif
+ifneq ($(root /a /b /c d /e),/ / / /)
+$(error sub-test 9 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+
+   # TEST #2 - DOS PATH stuff.
+   # ------------------------
+   if ($port_type eq 'W32' || $port_type eq 'OS/2' || $port_type eq 'DOS') {
+      run_make_test('
+ifneq ($(root D:),D:)
+$(error sub-test 0 failed)
+endif
+ifneq ($(root D:/),D:/)
+$(error sub-test 1 failed)
+endif
+ifneq ($(root D:\\),D:\\)
+$(error sub-test 2 failed)
+endif
+ifneq ($(root D:\\\\),D:\\\\)
+$(error sub-test 3 failed)
+endif
+ifneq ($(root D:\\\\a),D:\\\\)
+$(error sub-test 4 failed)
+endif
+ifneq ($(root D:\\/a),D:\\/)
+$(error sub-test 5 failed)
+endif
+ifneq ($(root a:\\\\//asdf/asdf\\asdf),a:\\\\//)
+$(error sub-test 6 failed)
+endif
+ifneq ($(root z://\\\\asdf/asdf\\asdf),z://\\\\)
+$(error sub-test 7 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+      }
+
+   # TEST #3 - UNC PATH stuff.
+   # ------------------------
+   if ($port_type eq 'W32' || $port_type eq 'OS/2') {
+      run_make_test('
+ifneq ($(root //./),//./)
+$(error sub-test 0 failed)
+endif
+ifneq ($(root \\\\.\\),\\\\.\\)
+$(error sub-test 1 failed)
+endif
+ifneq ($(root \\\\\\.\\),\\\\\\)
+$(error sub-test 2 failed)
+endif
+ifneq ($(root ///.\\),///)
+$(error sub-test 3 failed)
+endif
+ifneq ($(root /\\.\\),/\\.\\)
+$(error sub-test 4 failed)
+endif
+ifneq ($(root \\/.\\),\\/.\\)
+$(error sub-test 5 failed)
+endif
+ifneq ($(root //srv/),//srv/)
+$(error sub-test 6 failed)
+endif
+ifneq ($(root //srv),)
+$(error sub-test 7 failed)
+endif
+ifneq ($(root //srv/share),//srv/share)
+$(error sub-test 8 failed)
+endif
+ifneq ($(root //srv/share/),//srv/share/)
+$(error sub-test 9 failed)
+endif
+ifneq ($(root //srv/share/asdf),//srv/share/)
+$(error sub-test 10 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+      }
+
+}
+
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/select b/src/kmk/tests/scripts/functions/select
new file mode 100644
index 0000000..843ff2e
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/select
@@ -0,0 +1,96 @@
+# $Id: select 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(select when1-cond, when1-body[,whenN-cond, whenN-body])
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(select ) conditional function";
+
+$details = "A few simple tests, nothing spectacular.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(select 0,failed,1,success),success)
+$(error sub-test 0 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+
+ifneq ($(select 0,failed,1-1,failed2,otherwise,success),success)
+$(error sub-test 0 failed)
+endif
+ifneq ($(select 0,failed,1-1,failed2,otherwise:,success),success)
+$(error sub-test 1 failed)
+endif
+ifneq ($(select 0,failed,1-1,failed2, otherwise:,success),success)
+$(error sub-test 2 failed)
+endif
+ifneq ($(select 0,failed,1-1,failed2, otherwise: ,success),success)
+$(error sub-test 3 failed)
+endif
+ifneq ($(select 0,failed,1-1,failed2, otherwise : ,success),success)
+$(error sub-test 4 failed)
+endif
+ifneq ($(select 0,failed,1-1,failed2, default: ,success),success)
+$(error sub-test 5 failed)
+endif
+ifneq ($(select 0,failed,1-1,failed2,default,success),success)
+$(error sub-test 6 failed)
+endif
+
+ifneq ($(select 0,failed),)
+$(error sub-test 10 failed)
+endif
+ifneq ($(select 1,works),works)
+$(error sub-test 11 failed)
+endif
+ifneq ($(select 0,failed,1,success,1,failed3,otherwise,failed4),success)
+$(error sub-test 12 failed)
+endif
+
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+
+# Indicate that we're done.
+1;
+
+
+
+
diff --git a/src/kmk/tests/scripts/functions/shell b/src/kmk/tests/scripts/functions/shell
new file mode 100644
index 0000000..809c77f
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/shell
@@ -0,0 +1,60 @@
+#                                                                    -*-perl-*-
+
+$description = 'Test the $(shell ...) function.';
+
+$details = '';
+
+# Test standard shell
+run_make_test('.PHONY: all
+OUT := $(shell echo hi)
+all: ; @echo $(OUT)
+              ','','hi');
+
+# Test shells inside rules.
+run_make_test('.PHONY: all
+all: ; @echo $(shell echo hi)
+              ','','hi');
+
+# Verify .SHELLSTATUS
+run_make_test('.PHONY: all
+PRE := $(.SHELLSTATUS)
+$(shell exit 0)
+OK := $(.SHELLSTATUS)
+$(shell exit 1)
+BAD := $(.SHELLSTATUS)
+all: ; @echo PRE=$(PRE) OK=$(OK) BAD=$(BAD)
+              ','','PRE= OK=0 BAD=1');
+
+
+# Test unescaped comment characters in shells.  Savannah bug #20513
+if ($all_tests) {
+    run_make_test(q!
+FOO := $(shell echo '#')
+foo: ; echo '$(FOO)'
+!,
+              '', "#\n");
+}
+
+# Test shells inside exported environment variables.
+# This is the test that fails if we try to put make exported variables into
+# the environment for a $(shell ...) call.
+run_make_test('
+export HI = $(shell echo hi)
+.PHONY: all
+all: ; @echo $$HI
+    ','','hi');
+
+# Test shell errors in recipes including offset
+run_make_test('
+all:
+	@echo hi
+	$(shell ./basdfdfsed there)
+	@echo there
+',
+              '', "#MAKE#: ./basdfdfsed: Command not found\nhi\nthere\n");
+
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/functions/sort b/src/kmk/tests/scripts/functions/sort
new file mode 100644
index 0000000..e6e1343
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/sort
@@ -0,0 +1,51 @@
+#                                                                    -*-perl-*-
+
+$description = "The following test creates a makefile to verify
+the ability of make to sort lists of object. Sort
+will also remove any duplicate entries. This will also
+be tested.";
+
+$details = "The make file is built with a list of object in a random order
+and includes some duplicates. Make should sort all of the elements
+remove all duplicates\n";
+
+run_make_test('
+foo := moon_light days
+foo1:= jazz
+bar := captured 
+bar2 = boy end, has rise A midnight 
+bar3:= $(foo)
+s1  := _by
+s2  := _and_a
+t1  := $(addsuffix $(s1), $(bar) )
+t2  := $(addsuffix $(s2), $(foo1) )
+t3  := $(t2) $(t2) $(t2) $(t2) $(t2) $(t2) $(t2) $(t2) $(t2) $(t2) 
+t4  := $(t3) $(t3) $(t3) $(t3) $(t3) $(t3) $(t3) $(t3) $(t3) $(t3) 
+t5  := $(t4) $(t4) $(t4) $(t4) $(t4) $(t4) $(t4) $(t4) $(t4) $(t4) 
+t6  := $(t5) $(t5) $(t5) $(t5) $(t5) $(t5) $(t5) $(t5) $(t5) $(t5) 
+t7  := $(t6) $(t6) $(t6) 
+p1  := $(addprefix $(foo1), $(s2) )
+blank:= 
+all:
+	@echo $(sort $(bar2) $(foo)  $(addsuffix $(s1), $(bar) ) $(t2) $(bar2) $(bar3))
+	@echo $(sort $(blank) $(foo) $(bar2) $(t1) $(p1) )
+	@echo $(sort $(foo) $(bar2) $(t1) $(t4) $(t5) $(t7) $(t6) )
+',
+              '', 'A boy captured_by days end, has jazz_and_a midnight moon_light rise
+A boy captured_by days end, has jazz_and_a midnight moon_light rise
+A boy captured_by days end, has jazz_and_a midnight moon_light rise
+');
+
+
+# Test with non-space/tab whitespace.  Note that you can't see the
+# original bug except using valgrind.
+
+run_make_test("FOO = a b\tc\rd\fe \f \f \f \f \ff
+all: ; \@echo \$(words \$(sort \$(FOO)))\n",
+              '', "6\n");
+
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/functions/strip b/src/kmk/tests/scripts/functions/strip
new file mode 100644
index 0000000..8222433
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/strip
@@ -0,0 +1,57 @@
+#                                                                    -*-perl-*-
+$description = "The following test creates a makefile to verify
+the ability of make to strip white space from lists of object.\n";
+
+
+$details = "The make file is built with a list of objects that contain white space
+These are then run through the strip command to remove it. This is then
+verified by echoing the result.\n";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE <<'EOMAKE';
+TEST1 := "Is this TERMINAL fun?                                                               What makes you believe is this terminal fun?                                                                                                                                               JAPAN is a WONDERFUL planet -- I wonder if we will ever reach                                         their level of COMPARATIVE SHOPPING..."
+E :=
+TEST2 := $E   try this     and		this     	$E
+
+define TEST3
+
+and these	        test out
+
+
+some
+blank lines
+
+
+
+endef
+
+.PHONY: all
+all:
+	@echo '$(strip  $(TEST1) )'
+	@echo '$(strip  $(TEST2) )'
+	@echo '$(strip  $(TEST3) )'
+
+space: ; @echo '$(strip ) $(strip  	   )'
+
+EOMAKE
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile,"",&get_logfile);
+$answer = "\"Is this TERMINAL fun? What makes you believe is this terminal fun? JAPAN is a WONDERFUL planet -- I wonder if we will ever reach their level of COMPARATIVE SHOPPING...\"
+try this and this
+and these test out some blank lines
+";
+&compare_output($answer,&get_logfile(1));
+
+
+&run_make_with_options($makefile,"space",&get_logfile);
+$answer = " \n";
+&compare_output($answer,&get_logfile(1));
+
+1;
diff --git a/src/kmk/tests/scripts/functions/substitution b/src/kmk/tests/scripts/functions/substitution
new file mode 100644
index 0000000..0d2f6a2
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/substitution
@@ -0,0 +1,38 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the subst and patsubst functions";
+
+$details = "";
+
+# Generic patsubst test: test both the function and variable form.
+
+run_make_test('
+foo := a.o b.o c.o
+bar := $(foo:.o=.c)
+bar2:= $(foo:%.o=%.c)
+bar3:= $(patsubst %.c,%.o,x.c.c bar.c)
+all:;@echo $(bar); echo $(bar2); echo $(bar3)',
+'',
+'a.c b.c c.c
+a.c b.c c.c
+x.c.o bar.o');
+
+# Patsubst without '%'--shouldn't match because the whole word has to match
+# in patsubst.  Based on a bug report by Markus Mauhart <qwe123@chello.at>
+
+run_make_test('all:;@echo $(patsubst Foo,Repl,FooFoo)', '', 'FooFoo');
+
+# Variable subst where a pattern matches multiple times in a single word.
+# Based on a bug report by Markus Mauhart <qwe123@chello.at>
+
+run_make_test('
+A := fooBARfooBARfoo
+all:;@echo $(A:fooBARfoo=REPL)', '', 'fooBARREPL');
+
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/functions/substr b/src/kmk/tests/scripts/functions/substr
new file mode 100644
index 0000000..bf0eba9
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/substr
@@ -0,0 +1,125 @@
+# $Id: substr 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(substr str, start[, length[, pad]])
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(substr ) function";
+
+$details = "A few simple tests and edge cases.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(substr asdf,4),f)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,20),tuvwxyz)
+$(error sub-test 0 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,20,1),t)
+$(error sub-test 1 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,20,2),tu)
+$(error sub-test 2 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,20,0),)
+$(error sub-test 3 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-1),z)
+$(error sub-test 4 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-2),yz)
+$(error sub-test 5 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-2,2),yz)
+$(error sub-test 6 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-2,3),yz)
+$(error sub-test 7 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-2,5,XYZ),yzXYZ)
+$(error sub-test 8 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-25,1),b)
+$(error sub-test 9 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-26,1),a)
+$(error sub-test 10 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-27,1),)
+$(error sub-test 11 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-27,2),a)
+$(error sub-test 12 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-27,3),ab)
+$(error sub-test 13 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-27,3,_),_ab)
+$(error sub-test 14 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-28,4,.^),.^ab)
+$(error sub-test 15 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-50,4),)
+$(error sub-test 16 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,-50,4,.^),.^.^)
+$(error sub-test 17 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,27,4,.^),.^.^)
+$(error sub-test 18 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,28,3,.^),.^.)
+$(error sub-test 19 failed)
+endif
+SP := $(subst ., ,.)
+ifneq (.$(substr abcdefghijklmnopqrstuvwxyz,100,3, ).,.   .)
+$(error sub-test 20 failed)
+endif
+ifneq ($(substr abcdefghijklmnopqrstuvwxyz,100,3, ),$(SP)$(SP)$(SP))
+$(error sub-test 21 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/suffix b/src/kmk/tests/scripts/functions/suffix
new file mode 100644
index 0000000..0c4f919
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/suffix
@@ -0,0 +1,57 @@
+$description = "The following test creates a makefile to test the suffix\n"
+              ."function. \n";
+
+$details = "The suffix function will return the string following the last _._\n"
+          ."the list provided. It will provide all of the unique suffixes found\n"
+          ."in the list. The long strings are sorted to remove duplicates.\n";
+
+# IF YOU NEED >1 MAKEFILE FOR THIS TEST, USE &get_tmpfile; TO GET
+# THE NAME OF THE MAKEFILE.  THIS INSURES CONSISTENCY AND KEEPS TRACK OF
+# HOW MANY MAKEFILES EXIST FOR EASY DELETION AT THE END.
+# EXAMPLE: $makefile2 = &get_tmpfile;
+
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "string  := word.pl general_test2.pl1 FORCE.pl word.pl3 generic_test.perl /tmp.c/bar foo.baz/bar.c MAKEFILES_variable.c\n"
+              ."string2 := \$(string) \$(string) \$(string) \$(string) \$(string) \$(string) \$(string)\n"
+              ."string3 := \$(string2) \$(string2) \$(string2) \$(string2) \$(string2) \$(string2) \$(string2)\n"
+              ."string4 := \$(string3) \$(string3) \$(string3) \$(string3) \$(string3) \$(string3) \$(string3)\n"
+              ."all: \n"
+              ."\t\@echo \$(suffix \$(string)) \n"
+              ."\t\@echo \$(sort \$(suffix \$(string4))) \n"
+              ."\t\@echo \$(suffix \$(string) a.out) \n"
+              ."\t\@echo \$(sort \$(suffix \$(string3))) \n";
+
+
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile,"",&get_logfile,0);
+
+# Create the answer to what should be produced by this Makefile
+
+# COMPARE RESULTS
+$answer = ".pl .pl1 .pl .pl3 .perl .c .c\n"
+         .".c .perl .pl .pl1 .pl3\n"
+         .".pl .pl1 .pl .pl3 .perl .c .c .out\n"
+         .".c .perl .pl .pl1 .pl3\n";
+
+# In this call to compare output, you should use the call &get_logfile(1)
+# to send the name of the last logfile created.  You may also use
+# the special call &get_logfile(1) which returns the same as &get_logfile(1).
+
+&compare_output($answer,&get_logfile(1));
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/functions/translate b/src/kmk/tests/scripts/functions/translate
new file mode 100644
index 0000000..2dcf83f
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/translate
@@ -0,0 +1,76 @@
+# $Id: translate 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(translate string, from-set[, to-set[, pad-char]])
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(translate ) function";
+
+$details = "A few simple tests and edge cases.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+ifneq ($(translate abcdefghijklmnopqrstuvwxyz,abcde,01234),01234fghijklmnopqrstuvwxyz)
+$(error sub-test 0 failed)
+endif
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+ifneq ($(translate abcdefghijklmnopqrstuvwxyz,abcde,01234),01234fghijklmnopqrstuvwxyz)
+$(error sub-test 0 failed)
+endif
+ifneq ($(translate abcdefghijklmnopqrstuvwxyz,abcde,,.),.....fghijklmnopqrstuvwxyz)
+$(error sub-test 1 failed)
+endif
+ifneq ($(translate abcdefghijklmnopqrstuvwxyz,abcde,),fghijklmnopqrstuvwxyz)
+$(error sub-test 2 failed)
+endif
+ifneq ($(translate abcdefghijklmnopqrstuvwxyz,abcde,x1),x1fghijklmnopqrstuvwxyz)
+$(error sub-test 3 failed)
+endif
+ifneq ($(translate abcdefghijklmnopqrstuvwxyz,bfh),acdegijklmnopqrstuvwxyz)
+$(error sub-test 4 failed)
+endif
+ifneq ($(translate abcdefghijklmnopqrstuvwxyz,z,Z),abcdefghijklmnopqrstuvwxyZ)
+$(error sub-test 5 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+# Indicate that we're done.
+1;
+
diff --git a/src/kmk/tests/scripts/functions/value b/src/kmk/tests/scripts/functions/value
new file mode 100644
index 0000000..8e1a6f0
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/value
@@ -0,0 +1,30 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the value function.";
+
+$details = "This is a test of the value function in GNU make.
+This function will evaluate to the value of the named variable with no
+further expansion performed on it.\n";
+
+open(MAKEFILE,"> $makefile");
+
+print MAKEFILE <<'EOF';
+export FOO = foo
+
+recurse = FOO = $FOO
+static := FOO = $(value FOO)
+
+all: ; @echo $(recurse) $(value recurse) $(static) $(value static)
+EOF
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile, "", &get_logfile);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "FOO = OO FOO = foo FOO = foo FOO = foo\n";
+
+
+&compare_output($answer,&get_logfile(1));
+
+1;
diff --git a/src/kmk/tests/scripts/functions/warning b/src/kmk/tests/scripts/functions/warning
new file mode 100644
index 0000000..16eb83b
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/warning
@@ -0,0 +1,83 @@
+#                                                                    -*-Perl-*-
+
+$description = "\
+The following test creates a makefile to test the warning function.";
+
+$details = "";
+
+open(MAKEFILE,"> $makefile");
+
+print MAKEFILE <<'EOF';
+ifdef WARNING1
+$(warning warning is $(WARNING1))
+endif
+
+ifdef WARNING2
+$(warning warning is $(WARNING2))
+endif
+
+ifdef WARNING3
+all: some; @echo hi $(warning warning is $(WARNING3))
+endif
+
+ifdef WARNING4
+all: some; @echo hi
+	@echo there $(warning warning is $(WARNING4))
+endif
+
+some: ; @echo Some stuff
+
+EOF
+
+close(MAKEFILE);
+
+# Test #1
+
+&run_make_with_options($makefile, "WARNING1=yes", &get_logfile, 0);
+$answer = "$makefile:2: warning is yes\nSome stuff\n";
+&compare_output($answer,&get_logfile(1));
+
+# Test #2
+
+&run_make_with_options($makefile, "WARNING2=no", &get_logfile, 0);
+$answer = "$makefile:6: warning is no\nSome stuff\n";
+&compare_output($answer,&get_logfile(1));
+
+# Test #3
+
+&run_make_with_options($makefile, "WARNING3=maybe", &get_logfile, 0);
+$answer = "Some stuff\n$makefile:10: warning is maybe\nhi\n";
+&compare_output($answer,&get_logfile(1));
+
+# Test #4
+
+&run_make_with_options($makefile, "WARNING4=definitely", &get_logfile, 0);
+$answer = "Some stuff\n$makefile:15: warning is definitely\nhi\nthere\n";
+&compare_output($answer,&get_logfile(1));
+
+# Test linenumber offset
+
+run_make_test(q!
+all: one two
+	$(warning in $@ line 3)
+	@true
+	$(warning in $@ line 5)
+
+one two:
+	$(warning in $@ line 8)
+	@true
+	$(warning in $@ line 10)
+!,
+              '', "#MAKEFILE#:8: in one line 8
+#MAKEFILE#:10: in one line 10
+#MAKEFILE#:8: in two line 8
+#MAKEFILE#:10: in two line 10
+#MAKEFILE#:3: in all line 3
+#MAKEFILE#:5: in all line 5\n");
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/functions/while b/src/kmk/tests/scripts/functions/while
new file mode 100644
index 0000000..c0e6481
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/while
@@ -0,0 +1,73 @@
+# $Id: while 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# $(while condition,body)
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the $(while ) loop function";
+
+$details = "A few simple tests, nothing spectacular.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check that the feature is present.
+   # --------------------------------------------
+   run_make_test('
+VAR    := 0
+OUTPUT := $(while $(VAR)==0,$(eval VAR=1)works)
+ifneq ($(OUTPUT),works)
+$(error sub-test 0 failed:$(OUTPUT))
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+
+   # TEST #1 - the real test.
+   # ------------------------
+   run_make_test('
+VAR    := 0
+OUTPUT := $(while $(VAR) < 3,$(eval VAR:=$(expr $(VAR) + 1))$(VAR))
+ifneq ($(OUTPUT),1 2 3)
+$(error sub-test 0 failed:$(OUTPUT))
+endif
+
+ifneq (.$(while 0,asdfasdfadsf).,..)
+$(error sub-test 1 failed)
+endif
+
+.PHONY: all
+all: ; @:
+',
+'',
+'');
+}
+
+
+
+# Indicate that we're done.
+1;
+
+
+
diff --git a/src/kmk/tests/scripts/functions/wildcard b/src/kmk/tests/scripts/functions/wildcard
new file mode 100644
index 0000000..bcd84ad
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/wildcard
@@ -0,0 +1,103 @@
+#                                                                    -*-perl-*-
+
+$description = "The following test creates a makefile to test wildcard
+expansions and the ability to put a command on the same
+line as the target name separated by a semi-colon.";
+
+$details = "\
+This test creates 4 files by the names of 1.example,
+two.example and 3.example.  We execute three tests.  The first
+executes the print1 target which tests the '*' wildcard by
+echoing all filenames by the name of '*.example'.  The second
+test echo's all files which match '?.example' and
+[a-z0-9].example.  Lastly we clean up all of the files using
+the '*' wildcard as in the first test";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE <<EOM;
+.PHONY: print1 print2 clean
+print1: ;\@echo \$(sort \$(wildcard example.*))
+print2:
+\t\@echo \$(sort \$(wildcard example.?))
+\t\@echo \$(sort \$(wildcard example.[a-z0-9]))
+\t\@echo \$(sort \$(wildcard example.[!A-Za-z_\\!]))
+clean:
+\t$delete_command \$(sort \$(wildcard example.*))
+EOM
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&touch("example.1");
+&touch("example.two");
+&touch("example.3");
+&touch("example.for");
+&touch("example._");
+
+# TEST #1
+# -------
+
+$answer = "example.1 example.3 example._ example.for example.two\n";
+
+&run_make_with_options($makefile,"print1",&get_logfile);
+
+&compare_output($answer,&get_logfile(1));
+
+
+# TEST #2
+# -------
+
+$answer = "example.1 example.3 example._\n"
+         ."example.1 example.3\n"
+         ."example.1 example.3\n";
+
+&run_make_with_options($makefile,"print2",&get_logfile);
+
+&compare_output($answer,&get_logfile(1));
+
+
+# TEST #3
+# -------
+
+$answer = "$delete_command example.1 example.3 example._ example.for example.two";
+if ($vos)
+{
+   $answer .= " \n";
+}
+else
+{
+   $answer .= "\n";
+}
+
+&run_make_with_options($makefile,"clean",&get_logfile);
+
+if ((-f "example.1")||(-f "example.two")||(-f "example.3")||(-f "example.for")) {
+   $test_passed = 0;
+}
+
+&compare_output($answer,&get_logfile(1));
+
+# TEST #4: Verify that failed wildcards don't return the pattern
+
+run_make_test(q!
+all: ; @echo $(wildcard xz--y*.7)
+!,
+              '', "\n");
+
+# TEST #5: wildcard used to verify file existence
+
+touch('xxx.yyy');
+
+run_make_test(q!exists: ; @echo file=$(wildcard xxx.yyy)!,
+              '', "file=xxx.yyy\n");
+
+unlink('xxx.yyy');
+
+run_make_test(q!exists: ; @echo file=$(wildcard xxx.yyy)!,
+              '', "file=\n");
+
+1;
diff --git a/src/kmk/tests/scripts/functions/word b/src/kmk/tests/scripts/functions/word
new file mode 100644
index 0000000..4dcc940
--- /dev/null
+++ b/src/kmk/tests/scripts/functions/word
@@ -0,0 +1,167 @@
+#                                                                    -*-perl-*-
+$description = "\
+Test the word, words, wordlist, firstword, and lastword functions.\n";
+
+$details = "\
+Produce a variable with a large number of words in it,
+determine the number of words, and then read each one back.\n";
+
+open(MAKEFILE,"> $makefile");
+print MAKEFILE <<'EOF';
+string  := word.pl general_test2.pl   FORCE.pl word.pl generic_test.perl MAKEFILES_variable.pl
+string2 := $(string) $(string) $(string) $(string) $(string) $(string) $(string)
+string3 := $(string2) $(string2) $(string2) $(string2) $(string2) $(string2) $(string2)
+string4 := $(string3) $(string3) $(string3) $(string3) $(string3) $(string3) $(string3)
+all:
+	@echo $(words $(string))
+	@echo $(words $(string4))
+	@echo $(word 1, $(string))
+	@echo $(word 100, $(string))
+	@echo $(word 1, $(string))
+	@echo $(word 1000, $(string3))
+	@echo $(wordlist 3, 4, $(string))
+	@echo $(wordlist 4, 3, $(string))
+	@echo $(wordlist 1, 6, $(string))
+	@echo $(wordlist 5, 7, $(string))
+	@echo $(wordlist 100, 110, $(string))
+	@echo $(wordlist 7, 10, $(string2))
+EOF
+close(MAKEFILE);
+
+&run_make_with_options($makefile, "", &get_logfile);
+$answer = "6\n"
+         ."2058\n"
+         ."word.pl\n"
+         ."\n"
+         ."word.pl\n"
+         ."\n"
+	 ."FORCE.pl word.pl\n"
+	 ."\n"
+	 ."word.pl general_test2.pl FORCE.pl word.pl generic_test.perl MAKEFILES_variable.pl\n"
+	 ."generic_test.perl MAKEFILES_variable.pl\n"
+	 ."\n"
+	 ."word.pl general_test2.pl FORCE.pl word.pl\n";
+&compare_output($answer, &get_logfile(1));
+
+
+# Test error conditions
+
+run_make_test('FOO = foo bar biz baz
+
+word-e1: ; @echo $(word ,$(FOO))
+word-e2: ; @echo $(word abc ,$(FOO))
+word-e3: ; @echo $(word 1a,$(FOO))
+
+wordlist-e1: ; @echo $(wordlist ,,$(FOO))
+wordlist-e2: ; @echo $(wordlist abc ,,$(FOO))
+wordlist-e3: ; @echo $(wordlist 1, 12a ,$(FOO))',
+              'word-e1',
+              "#MAKEFILE#:3: *** non-numeric first argument to 'word' function: ''.  Stop.",
+              512);
+
+run_make_test(undef,
+              'word-e2',
+              "#MAKEFILE#:4: *** non-numeric first argument to 'word' function: 'abc '.  Stop.",
+              512);
+
+run_make_test(undef,
+              'word-e3',
+              "#MAKEFILE#:5: *** non-numeric first argument to 'word' function: '1a'.  Stop.",
+              512);
+
+run_make_test(undef,
+              'wordlist-e1',
+              "#MAKEFILE#:7: *** non-numeric first argument to 'wordlist' function: ''.  Stop.",
+              512);
+
+run_make_test(undef,
+              'wordlist-e2',
+              "#MAKEFILE#:8: *** non-numeric first argument to 'wordlist' function: 'abc '.  Stop.",
+              512);
+
+run_make_test(undef,
+              'wordlist-e3',
+              "#MAKEFILE#:9: *** non-numeric second argument to 'wordlist' function: ' 12a '.  Stop.",
+              512);
+
+# Test error conditions again, but this time in a variable reference
+
+run_make_test('FOO = foo bar biz baz
+
+W = $(word $x,$(FOO))
+WL = $(wordlist $s,$e,$(FOO))
+
+word-e: ; @echo $(W)
+wordlist-e: ; @echo $(WL)',
+              'word-e x=',
+              "#MAKEFILE#:3: *** non-numeric first argument to 'word' function: ''.  Stop.",
+              512);
+
+run_make_test(undef,
+              'word-e x=abc',
+              "#MAKEFILE#:3: *** non-numeric first argument to 'word' function: 'abc'.  Stop.",
+              512);
+
+run_make_test(undef,
+              'word-e x=0',
+              "#MAKEFILE#:3: *** first argument to 'word' function must be greater than 0.  Stop.",
+              512);
+
+run_make_test(undef,
+              'wordlist-e s= e=',
+              "#MAKEFILE#:4: *** non-numeric first argument to 'wordlist' function: ''.  Stop.",
+              512);
+
+run_make_test(undef,
+              'wordlist-e s=abc e=',
+              "#MAKEFILE#:4: *** non-numeric first argument to 'wordlist' function: 'abc'.  Stop.",
+              512);
+
+run_make_test(undef,
+              'wordlist-e s=4 e=12a',
+              "#MAKEFILE#:4: *** non-numeric second argument to 'wordlist' function: '12a'.  Stop.",
+              512);
+
+run_make_test(undef,
+              'wordlist-e s=0 e=12',
+              "#MAKEFILE#:4: *** invalid first argument to 'wordlist' function: '0'.  Stop.",
+              512);
+
+
+# TEST #8 -- test $(firstword )
+#
+run_make_test('
+void :=
+list := $(void) foo bar baz #
+
+a := $(word 1,$(list))
+b := $(firstword $(list))
+
+.PHONY: all
+
+all:
+	@test "$a" = "$b" && echo $a
+',
+'',
+'foo');
+
+
+# TEST #9 -- test $(lastword )
+#
+run_make_test('
+void :=
+list := $(void) foo bar baz #
+
+a := $(word $(words $(list)),$(list))
+b := $(lastword $(list))
+
+.PHONY: all
+
+all:
+	@test "$a" = "$b" && echo $a
+',
+'',
+'baz');
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/misc/bs-nl b/src/kmk/tests/scripts/misc/bs-nl
new file mode 100644
index 0000000..fc323ce
--- /dev/null
+++ b/src/kmk/tests/scripts/misc/bs-nl
@@ -0,0 +1,227 @@
+#                                                                    -*-perl-*-
+$description = "Test backslash-newline handling.";
+
+$details = "";
+
+# TEST #1
+# -------
+
+# Backslash-newlines in recipes
+
+# These are basic backslash-newlines with no tricks
+run_make_test("fast:;\@echo fa\\\nst\n",
+              '', 'fast');
+
+run_make_test("slow:;\@: no-op; echo sl\\\now\n",
+              '', 'slow');
+
+run_make_test("dquote:;\@echo \"dqu\\\note\"\n",
+              '', 'dquote');
+
+run_make_test("squote:;\@echo 'squ\\\note'\n",
+              '', "squ\\\note");
+
+# Ensure that a leading prefix character is omitted
+run_make_test("fast:;\@echo fa\\\n\tst\n",
+              '', 'fast');
+
+run_make_test("slow:;\@: no-op; echo sl\\\n\tow\n",
+              '', 'slow');
+
+run_make_test("dquote:;\@echo \"dqu\\\n\tote\"\n",
+              '', 'dquote');
+
+run_make_test("squote:;\@echo 'squ\\\n\tote'\n",
+              '', "squ\\\note");
+
+# Ensure that ONLY the leading prefix character is omitted
+run_make_test("fast:;\@echo fa\\\n\t  st\n",
+              '', 'fa st');
+
+run_make_test("slow:;\@: no-op; echo sl\\\n\t\tow\n",
+              '', "sl ow");
+
+run_make_test("dquote:;\@echo \"dqu\\\n\t    ote\"\n",
+              '', 'dqu    ote');
+
+run_make_test("squote:;\@echo 'squ\\\n\t\t   ote'\n",
+              '', "squ\\\n\t   ote");
+
+# Backslash-newlines in variable values
+
+# Simple
+run_make_test(q!
+var = he\
+llo
+var:;@echo '|$(var)|'!,
+              '', "|he llo|");
+
+# Condense trailing space
+run_make_test(q!
+var = he  \
+llo
+var:;@echo '|$(var)|'!,
+              '', "|he llo|");
+
+# Remove leading space
+run_make_test(q!
+var = he\
+    llo
+var:;@echo '|$(var)|'!,
+              '', "|he llo|");
+
+# Multiple bs/nl condensed
+run_make_test(q!
+var = he\
+\
+\
+    llo
+var:;@echo '|$(var)|'!,
+              '', "|he llo|");
+
+# POSIX: Preserve trailing space
+run_make_test(q!
+.POSIX:
+x = y
+var = he  \
+llo
+var:;@echo '|$(var)|'!,
+              '', "|he   llo|");
+
+# POSIX: One space per bs-nl
+run_make_test(q!
+.POSIX:
+x = y
+var = he\
+\
+\
+    llo
+var:;@echo '|$(var)|'!,
+              '', "|he   llo|");
+
+# Savannah #39035: handle whitespace in call
+run_make_test(q!
+f = echo $(1)
+t:; @$(call f,"a \
+            b"); \
+        $(call f,"a \
+            b")
+!,
+              '', "a b\na b\n");
+
+# Savannah #38945: handle backslash CRLF
+# We need our own makefile so we can set binmode
+my $m1 = get_tmpfile();
+open(MAKEFILE, "> $m1");
+binmode(MAKEFILE);
+print MAKEFILE "FOO = foo \\\r\n";
+close(MAKEFILE);
+
+my $m2 = get_tmpfile();
+open(MAKEFILE, "> $m2");
+print MAKEFILE "include $m1\ndefine BAR\nall: ; \@echo \$(FOO) bar\nendef\n\$(eval \$(BAR))\n";
+close(MAKEFILE);
+
+run_make_with_options($m2, '', get_logfile());
+compare_output("foo bar\n", get_logfile(1));
+
+# Test different types of whitespace, and bsnl inside functions
+
+sub xlate
+{
+    $_ = $_[0];
+    s/\\r/\r/g;
+    s/\\t/\t/g;
+    s/\\f/\f/g;
+    s/\\v/\v/g;
+    s/\\n/\n/g;
+    return $_;
+}
+
+run_make_test(xlate(q!
+$(foreach\r  a \t , b\t  c \r ,$(info    $a  \r  )      )
+all:;@:
+!),
+              '', "b  \r  \nc  \r  \n");
+
+run_make_test(xlate(q!
+all:;@:$(foreach\r  a \t , b\t  c \r ,$(info    $a  \r  )      )
+!),
+              '', "b  \r  \nc  \r  \n");
+
+run_make_test(xlate(q!
+$(foreach \
+\r  a \t\
+ , b\t \
+ c \r ,$(info  \
+  $a  \r  )  \
+    )
+all:;@:
+!),
+              '', "b  \r  \nc  \r  \n");
+
+run_make_test(xlate(q!
+all:;@:$(foreach \
+\r  a \t\
+ , b\t \
+ c \r ,$(info  \
+  $a  \r  )  \
+    )
+!),
+              '', "b  \r  \nc  \r  \n");
+
+run_make_test(xlate(q!
+define FOO
+$(foreach
+\r  a \t
+ , b\t
+ c \r ,$(info
+  $a  \r  )
+    )
+endef
+$(FOO)
+all:;@:
+!),
+              '', "b  \r  \nc  \r  \n");
+
+run_make_test(xlate(q!
+define FOO
+$(foreach
+\r  a \t
+ , b\t
+ c \r ,$(info
+  $a  \r  )
+    )
+endef
+all:;@:$(FOO)
+!),
+              '', "b  \r  \nc  \r  \n");
+
+# Test variables in recipes that expand to multiple lines
+
+run_make_test(q!
+define var
+
+echo foo
+
+
+echo bar
+endef
+all:;$(var)
+!,
+              '', "echo foo\nfoo\necho bar\nbar\n");
+
+run_make_test(q!
+define var
+
+echo foo
+
+@
+
+echo bar
+endef
+all:;$(var)
+!,
+              '', "echo foo\nfoo\necho bar\nbar\n");
+
+1;
diff --git a/src/kmk/tests/scripts/misc/close_stdout b/src/kmk/tests/scripts/misc/close_stdout
new file mode 100644
index 0000000..18606c3
--- /dev/null
+++ b/src/kmk/tests/scripts/misc/close_stdout
@@ -0,0 +1,9 @@
+#                                                                    -*-perl-*-
+
+$description = "Make sure make exits with an error if stdout is full.";
+
+if (-e '/dev/full') {
+  run_make_test('', '-v > /dev/full', '/^#MAKE#: write error/', 256);
+}
+
+1;
diff --git a/src/kmk/tests/scripts/misc/fopen-fail b/src/kmk/tests/scripts/misc/fopen-fail
new file mode 100644
index 0000000..2ec9810
--- /dev/null
+++ b/src/kmk/tests/scripts/misc/fopen-fail
@@ -0,0 +1,18 @@
+#                                                                    -*-perl-*-
+
+$description = "Make sure make exits with an error if fopen fails.";
+
+# Recurse infinitely until we run out of open files, and ensure we
+# fail with a non-zero exit code.  Don't bother to test the output
+# since it's hard to know what it will be, exactly.
+# See Savannah bug #27374.
+
+# Use a longer-than-normal timeout: some systems have more FDs available?
+# We also set ulimit -n 512 in check-regression in Makefile.am, which see.
+# See Savannah bug #42390.
+run_make_test(q!
+include $(lastword $(MAKEFILE_LIST))
+!,
+              '', undef, 512, 300);
+
+1;
diff --git a/src/kmk/tests/scripts/misc/general1 b/src/kmk/tests/scripts/misc/general1
new file mode 100644
index 0000000..352fc6a
--- /dev/null
+++ b/src/kmk/tests/scripts/misc/general1
@@ -0,0 +1,51 @@
+#                                                                    -*-perl-*-
+
+$description = "The following test creates a makefile to test the
+simple functionality of make.  It mimics the
+rebuilding of a product with dependencies.
+It also tests the simple definition of VPATH.";
+
+open(MAKEFILE,"> $makefile");
+
+print MAKEFILE <<EOF;
+VPATH = $workdir
+edit:  main.o kbd.o commands.o display.o \\
+       insert.o
+\t\@echo cc -o edit main.o kbd.o commands.o display.o \\
+                  insert.o
+main.o : main.c defs.h
+\t\@echo cc -c main.c
+kbd.o : kbd.c defs.h command.h
+\t\@echo cc -c kbd.c
+commands.o : command.c defs.h command.h
+\t\@echo cc -c commands.c
+display.o : display.c defs.h buffer.h
+\t\@echo cc -c display.c
+insert.o : insert.c defs.h buffer.h
+\t\@echo cc -c insert.c
+EOF
+
+close(MAKEFILE);
+
+
+@files_to_touch = ("$workdir${pathsep}main.c","$workdir${pathsep}defs.h",
+               "$workdir${pathsep}kbd.c","$workdir${pathsep}command.h",
+               "$workdir${pathsep}commands.c","$workdir${pathsep}display.c",
+               "$workdir${pathsep}buffer.h","$workdir${pathsep}insert.c",
+	       "$workdir${pathsep}command.c");
+
+&touch(@files_to_touch);
+
+&run_make_with_options($makefile,"",&get_logfile);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "cc -c main.c\ncc -c kbd.c\ncc -c commands.c\ncc -c display.c
+cc -c insert.c\ncc -o edit main.o kbd.o commands.o display.o insert.o\n";
+
+# COMPARE RESULTS
+
+if (&compare_output($answer,&get_logfile(1))) {
+  unlink @files_to_touch;
+}
+
+1;
diff --git a/src/kmk/tests/scripts/misc/general2 b/src/kmk/tests/scripts/misc/general2
new file mode 100644
index 0000000..d4e008a
--- /dev/null
+++ b/src/kmk/tests/scripts/misc/general2
@@ -0,0 +1,50 @@
+#                                                                    -*-perl-*-
+
+$description = "The following test creates a makefile to test the
+simple functionality of make.  It is the same as
+general_test1 except that this one tests the
+definition of a variable to hold the object filenames.";
+
+open(MAKEFILE,"> $makefile");
+
+# The contents of the Makefile ...
+
+print MAKEFILE <<EOF;
+VPATH = $workdir
+objects = main.o kbd.o commands.o display.o insert.o
+edit:  \$(objects)
+\t\@echo cc -o edit \$(objects)
+main.o : main.c defs.h
+\t\@echo cc -c main.c
+kbd.o : kbd.c defs.h command.h
+\t\@echo cc -c kbd.c
+commands.o : command.c defs.h command.h
+\t\@echo cc -c commands.c
+display.o : display.c defs.h buffer.h
+\t\@echo cc -c display.c
+insert.o : insert.c defs.h buffer.h
+\t\@echo cc -c insert.c
+EOF
+
+close(MAKEFILE);
+
+
+@files_to_touch = ("$workdir${pathsep}main.c","$workdir${pathsep}defs.h",
+               "$workdir${pathsep}kbd.c","$workdir${pathsep}command.h",
+               "$workdir${pathsep}commands.c","$workdir${pathsep}display.c",
+               "$workdir${pathsep}buffer.h","$workdir${pathsep}insert.c",
+	       "$workdir${pathsep}command.c");
+
+&touch(@files_to_touch);
+
+&run_make_with_options($makefile,"-j1",&get_logfile);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "cc -c main.c\ncc -c kbd.c\ncc -c commands.c\ncc -c display.c
+cc -c insert.c\ncc -o edit main.o kbd.o commands.o display.o insert.o\n";
+
+if (&compare_output($answer,&get_logfile(1))) {
+  unlink @files_to_touch;
+}
+
+1;
diff --git a/src/kmk/tests/scripts/misc/general3 b/src/kmk/tests/scripts/misc/general3
new file mode 100644
index 0000000..7bbff1c
--- /dev/null
+++ b/src/kmk/tests/scripts/misc/general3
@@ -0,0 +1,315 @@
+#                                                                    -*-perl-*-
+
+$description = "\
+This tests random features of the parser that need to be supported, and
+which have either broken at some point in the past or seem likely to
+break.";
+
+run_make_test("
+# We want to allow both empty commands _and_ commands that resolve to empty.
+EMPTY =
+
+.PHONY: all a1 a2 a3 a4
+all: a1 a2 a3 a4
+
+a1:;
+a2:
+\t
+a3:;\$(EMPTY)
+a4:
+\t\$(EMPTY)
+
+\# Non-empty lines that expand to nothing should also be ignored.
+STR =     \# Some spaces
+TAB =   \t  \# A TAB and some spaces
+
+\$(STR)
+
+\$(STR) \$(TAB)",
+              '', "#MAKE#: Nothing to be done for 'all'.");
+
+# TEST 2
+
+# Make sure files without trailing newlines are handled properly.
+# Have to use the old style invocation to test this.
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE, "> $makefile2");
+print MAKEFILE "all:;\@echo FOO = \$(FOO)\nFOO = foo";
+close(MAKEFILE);
+
+&run_make_with_options($makefile2,"",&get_logfile);
+$answer = "FOO = foo\n";
+&compare_output($answer,&get_logfile(1));
+
+# TEST 3
+
+# Check semicolons in variable references
+
+run_make_test('
+$(if true,$(info true; true))
+all: ; @:
+',
+              '', 'true; true');
+
+# TEST 4
+
+# Check that backslashes in command scripts are handled according to POSIX.
+# Checks Savannah bug # 1332.
+
+# Test the fastpath / no quotes
+run_make_test('
+all:
+	@echo foo\
+bar
+	@echo foo\
+	bar
+	@echo foo\
+    bar
+	@echo foo\
+	    bar
+	@echo foo \
+bar
+	@echo foo \
+	bar
+	@echo foo \
+    bar
+	@echo foo \
+	    bar
+',
+              '', 'foobar
+foobar
+foo bar
+foo bar
+foo bar
+foo bar
+foo bar
+foo bar');
+
+# Test the fastpath / single quotes
+run_make_test("
+all:
+	\@echo 'foo\\
+bar'
+	\@echo 'foo\\
+	bar'
+	\@echo 'foo\\
+    bar'
+	\@echo 'foo\\
+	    bar'
+	\@echo 'foo \\
+bar'
+	\@echo 'foo \\
+	bar'
+	\@echo 'foo \\
+    bar'
+	\@echo 'foo \\
+	    bar'
+",
+              '', 'foo\
+bar
+foo\
+bar
+foo\
+    bar
+foo\
+    bar
+foo \
+bar
+foo \
+bar
+foo \
+    bar
+foo \
+    bar');
+
+# Test the fastpath / double quotes
+run_make_test('
+all:
+	@echo "foo\
+bar"
+	@echo "foo\
+	bar"
+	@echo "foo\
+    bar"
+	@echo "foo\
+	    bar"
+	@echo "foo \
+bar"
+	@echo "foo \
+	bar"
+	@echo "foo \
+    bar"
+	@echo "foo \
+	    bar"
+',
+              '', 'foobar
+foobar
+foo    bar
+foo    bar
+foo bar
+foo bar
+foo     bar
+foo     bar');
+
+# Test the slow path / no quotes
+run_make_test('
+all:
+	@echo hi; echo foo\
+bar
+	@echo hi; echo foo\
+	bar
+	@echo hi; echo foo\
+ bar
+	@echo hi; echo foo\
+	 bar
+	@echo hi; echo foo \
+bar
+	@echo hi; echo foo \
+	bar
+	@echo hi; echo foo \
+ bar
+	@echo hi; echo foo \
+	 bar
+',
+              '', 'hi
+foobar
+hi
+foobar
+hi
+foo bar
+hi
+foo bar
+hi
+foo bar
+hi
+foo bar
+hi
+foo bar
+hi
+foo bar');
+
+# Test the slow path / no quotes.  This time we put the slow path
+# determination _after_ the backslash-newline handling.
+run_make_test('
+all:
+	@echo foo\
+bar; echo hi
+	@echo foo\
+	bar; echo hi
+	@echo foo\
+ bar; echo hi
+	@echo foo\
+	 bar; echo hi
+	@echo foo \
+bar; echo hi
+	@echo foo \
+	bar; echo hi
+	@echo foo \
+ bar; echo hi
+	@echo foo \
+	 bar; echo hi
+',
+              '', 'foobar
+hi
+foobar
+hi
+foo bar
+hi
+foo bar
+hi
+foo bar
+hi
+foo bar
+hi
+foo bar
+hi
+foo bar
+hi');
+
+# Test the slow path / single quotes
+run_make_test("
+all:
+	\@echo hi; echo 'foo\\
+bar'
+	\@echo hi; echo 'foo\\
+	bar'
+	\@echo hi; echo 'foo\\
+    bar'
+	\@echo hi; echo 'foo\\
+	    bar'
+	\@echo hi; echo 'foo \\
+bar'
+	\@echo hi; echo 'foo \\
+	bar'
+	\@echo hi; echo 'foo \\
+    bar'
+	\@echo hi; echo 'foo \\
+	    bar'
+",
+              '', 'hi
+foo\
+bar
+hi
+foo\
+bar
+hi
+foo\
+    bar
+hi
+foo\
+    bar
+hi
+foo \
+bar
+hi
+foo \
+bar
+hi
+foo \
+    bar
+hi
+foo \
+    bar');
+
+# Test the slow path / double quotes
+run_make_test('
+all:
+	@echo hi; echo "foo\
+bar"
+	@echo hi; echo "foo\
+	bar"
+	@echo hi; echo "foo\
+    bar"
+	@echo hi; echo "foo\
+	    bar"
+	@echo hi; echo "foo \
+bar"
+	@echo hi; echo "foo \
+	bar"
+	@echo hi; echo "foo \
+    bar"
+	@echo hi; echo "foo \
+	    bar"
+',
+              '', 'hi
+foobar
+hi
+foobar
+hi
+foo    bar
+hi
+foo    bar
+hi
+foo bar
+hi
+foo bar
+hi
+foo     bar
+hi
+foo     bar');
+
+run_make_test('x:;@-exit 1', '', "#MAKE#: [#MAKEFILE#:1: x] Error 1 (ignored)\n");
+
+1;
diff --git a/src/kmk/tests/scripts/misc/general4 b/src/kmk/tests/scripts/misc/general4
new file mode 100644
index 0000000..dd9475c
--- /dev/null
+++ b/src/kmk/tests/scripts/misc/general4
@@ -0,0 +1,85 @@
+#                                                                    -*-perl-*-
+
+$description = "\
+This tests random features of make's algorithms, often somewhat obscure,
+which have either broken at some point in the past or seem likely to
+break.";
+
+run_make_test('
+# Make sure that subdirectories built as prerequisites are actually handled
+# properly.
+
+all: dir/subdir/file.a
+
+dir/subdir: ; @echo mkdir -p dir/subdir
+
+dir/subdir/file.b: dir/subdir ; @echo touch dir/subdir/file.b
+
+dir/subdir/%.a: dir/subdir/%.b ; @echo cp $< $@',
+              '', "mkdir -p dir/subdir\ntouch dir/subdir/file.b\ncp dir/subdir/file.b dir/subdir/file.a\n");
+
+# Test implicit rules
+# kmk: No default implicit rules.
+
+&touch('foo.c');
+run_make_test('foo: foo.o',
+              'CC="@echo cc" OUTPUT_OPTION=',
+	      !$is_kmk ? 'cc -c foo.c
+cc foo.o -o foo' :
+"#MAKE#: *** No rule to make target `foo.o', needed by `foo'.  Stop.",
+!$is_kmk ? 0 : 512);
+unlink('foo.c');
+
+
+# Test implicit rules with '$' in the name (see se_implicit)
+
+run_make_test(q!
+%.foo : baz$$bar ; @echo 'done $<'
+%.foo : bar$$baz ; @echo 'done $<'
+test.foo:
+baz$$bar bar$$baz: ; @echo '$@'
+!,
+              '',
+              "baz\$bar\ndone baz\$bar");
+
+
+# Test implicit rules with '$' in the name (see se_implicit)
+# Use the '$' in the pattern.
+
+run_make_test(q!
+%.foo : %$$bar ; @echo 'done $<'
+test.foo:
+test$$bar: ; @echo '$@'
+!,
+              '',
+              "test\$bar\ndone test\$bar");
+
+# Make sure that subdirectories built as prerequisites are actually handled
+# properly... this time with '$'
+
+run_make_test(q!
+
+all: dir/subdir/file.$$a
+
+dir/subdir: ; @echo mkdir -p '$@'
+
+dir/subdir/file.$$b: dir/subdir ; @echo touch '$@'
+
+dir/subdir/%.$$a: dir/subdir/%.$$b ; @echo 'cp $< $@'
+!,
+              '', "mkdir -p dir/subdir\ntouch dir/subdir/file.\$b\ncp dir/subdir/file.\$b dir/subdir/file.\$a\n");
+
+# Test odd whitespace at the beginning of a line
+
+run_make_test("
+all:
+   \f
+
+    \\
+ \f  \\
+    \013 \\
+all: ; \@echo hi
+",
+              '', "hi\n");
+
+1;
diff --git a/src/kmk/tests/scripts/misc/utf8 b/src/kmk/tests/scripts/misc/utf8
new file mode 100644
index 0000000..2adcd07
--- /dev/null
+++ b/src/kmk/tests/scripts/misc/utf8
@@ -0,0 +1,14 @@
+#                                                                    -*-perl-*-
+$description = "Test utf8 handling.";
+
+$details = "";
+
+# Variable names containing UTF8 characters
+run_make_test("
+\xe2\x96\xaa := hello
+\$(info \$(\xe2\x96\xaa))
+all:
+",
+              '', "hello\n#MAKE#: Nothing to be done for 'all'.");
+
+1;
diff --git a/src/kmk/tests/scripts/options/dash-B b/src/kmk/tests/scripts/options/dash-B
new file mode 100644
index 0000000..4c4c4cf
--- /dev/null
+++ b/src/kmk/tests/scripts/options/dash-B
@@ -0,0 +1,87 @@
+#                                                                    -*-perl-*-
+
+$description = "Test make -B (always remake) option.\n";
+
+$details = "\
+Construct a simple makefile that builds a target.
+Invoke make once, so it builds everything.  Invoke it again and verify
+that nothing is built.  Then invoke it with -B and verify that everything
+is built again.";
+
+&touch('bar.x');
+
+run_make_test('
+.SUFFIXES:
+
+.PHONY: all
+all: foo
+
+foo: bar.x
+	@echo cp $< $@
+	@echo "" > $@
+',
+              '', 'cp bar.x foo');
+
+run_make_test(undef, '', "#MAKE#: Nothing to be done for 'all'.");
+run_make_test(undef, '-B', 'cp bar.x foo');
+
+# Put the timestamp for foo into the future; it should still be remade.
+
+utouch(1000, 'foo');
+run_make_test(undef, '', "#MAKE#: Nothing to be done for 'all'.");
+run_make_test(undef, '-B', 'cp bar.x foo');
+
+# Clean up
+
+rmfiles('bar.x', 'foo');
+
+# Test -B with the re-exec feature: we don't want to re-exec forever
+# Savannah bug # 7566
+
+run_make_test('
+all: ; @:
+$(info MAKE_RESTARTS=$(MAKE_RESTARTS))
+include foo.x
+foo.x: ; @touch $@
+',
+              '-B', 'MAKE_RESTARTS=
+MAKE_RESTARTS=1');
+
+rmfiles('foo.x');
+
+# Test -B with the re-exec feature: we DO want -B in the "normal" part of the
+# makefile.
+
+&touch('blah.x');
+
+run_make_test('
+all: blah.x ; @echo $@
+$(info MAKE_RESTARTS=$(MAKE_RESTARTS))
+include foo.x
+foo.x: ; @touch $@
+blah.x: ; @echo $@
+',
+              '-B', 'MAKE_RESTARTS=
+MAKE_RESTARTS=1
+blah.x
+all');
+
+rmfiles('foo.x', 'blah.x');
+
+# Test that $? is set properly with -B; all prerequisites will be newer!
+
+utouch(-10, 'x.b');
+touch('x.a');
+
+run_make_test(q!
+x.a: x.b ; @echo $?
+!,
+              '-B', "x.b\n");
+
+unlink(qw(x.a x.b));
+
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/options/dash-C b/src/kmk/tests/scripts/options/dash-C
new file mode 100644
index 0000000..42d0a8b
--- /dev/null
+++ b/src/kmk/tests/scripts/options/dash-C
@@ -0,0 +1,71 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the -C option to GNU make.";
+
+$details = "\
+This test is similar to the clean test except that this test creates the file
+to delete in the work directory instead of the current directory.  Make is
+called from another directory using the -C workdir option so that it can both
+find the makefile and the file to delete in the work directory.";
+
+$example = $workdir . $pathsep . "EXAMPLE";
+
+open(MAKEFILE,"> $makefile");
+print MAKEFILE <<EOF;
+all: ; \@echo This makefile did not clean the dir ... good
+clean: ; $delete_command EXAMPLE\$(ext)
+EOF
+close(MAKEFILE);
+
+# TEST #1
+# -------
+&touch($example);
+
+&run_make_with_options("${testname}.mk",
+	               "-C $workdir clean",
+		       &get_logfile);
+
+chdir $workdir;
+$wpath = &get_this_pwd;
+chdir $pwd;
+
+if (-f $example) {
+  $test_passed = 0;
+}
+
+# Create the answer to what should be produced by this Makefile
+$answer = "$make_name: Entering directory '$wpath'\n"
+        . "$delete_command EXAMPLE\n"
+        . "$make_name: Leaving directory '$wpath'\n";
+
+&compare_output($answer,&get_logfile(1));
+
+
+# TEST #2
+# -------
+# Do it again with trailing "/"; this should work the same
+
+$example .= "slash";
+
+&touch($example);
+
+&run_make_with_options("${testname}.mk",
+	               "-C $workdir/ clean ext=slash",
+		       &get_logfile);
+
+chdir $workdir;
+$wpath = &get_this_pwd;
+chdir $pwd;
+
+if (-f $example) {
+  $test_passed = 0;
+}
+
+# Create the answer to what should be produced by this Makefile
+$answer = "$make_name: Entering directory '$wpath'\n"
+        . "$delete_command EXAMPLEslash\n"
+        . "$make_name: Leaving directory '$wpath'\n";
+
+&compare_output($answer,&get_logfile(1));
+
+1;
diff --git a/src/kmk/tests/scripts/options/dash-I b/src/kmk/tests/scripts/options/dash-I
new file mode 100644
index 0000000..d47a8d8
--- /dev/null
+++ b/src/kmk/tests/scripts/options/dash-I
@@ -0,0 +1,59 @@
+#                                                                    -*-perl-*-
+
+$description ="The following test creates a makefile to test the -I option.";
+
+$details = "\
+This test tests the -I option by including a filename in
+another directory and giving make that directory name
+under -I in the command line.  Without this option, the make
+would fail to find the included file.  It also checks to make
+sure that the -I option gets passed to recursive makes.";
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+$mf2 = substr ($makefile2, index ($makefile2, $pathsep) + 1);
+print MAKEFILE <<EOF;
+include $mf2
+all:
+\t\@echo There should be no errors for this makefile.
+EOF
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+
+open(MAKEFILE,"> $makefile2");
+
+print MAKEFILE <<EOF;
+ANOTHER:
+\t\@echo This is another included makefile
+recurse:
+\t\$(MAKE) ANOTHER -f $makefile
+EOF
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile,"-I $workdir all",&get_logfile);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "There should be no errors for this makefile.\n";
+&compare_output($answer,&get_logfile(1));
+
+
+$answer = "This is another included makefile\n";
+&run_make_with_options($makefile,"-I $workdir ANOTHER",&get_logfile);
+&compare_output($answer,&get_logfile(1));
+
+
+$answer = "$mkpath ANOTHER -f $makefile
+${make_name}[1]: Entering directory '$pwd'
+This is another included makefile
+${make_name}[1]: Leaving directory '$pwd'\n";
+
+&run_make_with_options($makefile,"-I $workdir recurse",&get_logfile);
+&compare_output($answer,&get_logfile(1));
diff --git a/src/kmk/tests/scripts/options/dash-W b/src/kmk/tests/scripts/options/dash-W
new file mode 100644
index 0000000..857b1cc
--- /dev/null
+++ b/src/kmk/tests/scripts/options/dash-W
@@ -0,0 +1,91 @@
+#                                                                    -*-perl-*-
+
+$description = "Test make -W (what if) option.\n";
+
+# Basic build
+
+run_make_test('
+a.x: b.x
+a.x b.x: ; echo >> $@
+',
+              '', "echo >> b.x\necho >> a.x");
+
+# Run it again: nothing should happen
+
+run_make_test(undef, '', "#MAKE#: 'a.x' is up to date.");
+
+# Now run it with -W b.x: should rebuild a.x
+
+run_make_test(undef, '-W b.x', 'echo >> a.x');
+
+# Put the timestamp for a.x into the future; it should still be remade.
+
+utouch(1000, 'a.x');
+run_make_test(undef, '', "#MAKE#: 'a.x' is up to date.");
+run_make_test(undef, '-W b.x', 'echo >> a.x');
+
+# Clean up
+
+rmfiles('a.x', 'b.x');
+
+# Test -W with the re-exec feature: we don't want to re-exec forever
+# Savannah bug # 7566
+
+# First set it up with a normal build
+
+run_make_test('
+all: baz.x ; @:
+include foo.x
+foo.x: bar.x
+	@echo "\$$(info restarts=\$$(MAKE_RESTARTS))" > $@
+	@echo "touch $@"
+bar.x: ; echo >> $@
+baz.x: bar.x ; @echo "touch $@"
+',
+              '', 'echo >> bar.x
+touch foo.x
+restarts=1
+touch baz.x');
+
+# Now run with -W bar.x
+
+# Tweak foo.x's timestamp so the update will change it.
+&utouch(1000, 'foo.x');
+
+run_make_test(undef, '-W bar.x', "restarts=\ntouch foo.x\nrestarts=1\ntouch baz.x");
+
+rmfiles('foo.x', 'bar.x');
+
+# Test -W on vpath-found files: it should take effect.
+# Savannah bug # 15341
+
+mkdir('x-dir', 0777);
+utouch(-20, 'x-dir/x');
+touch('y');
+
+run_make_test('
+y: x ; @echo cp $< $@
+',
+              '-W x-dir/x VPATH=x-dir',
+              'cp x-dir/x y');
+
+# Make sure ./ stripping doesn't interfere with the match.
+
+run_make_test('
+y: x ; @echo cp $< $@
+',
+              '-W ./x-dir/x VPATH=x-dir',
+              'cp x-dir/x y');
+
+run_make_test(undef,
+              '-W x-dir/x VPATH=./x-dir',
+              'cp ./x-dir/x y');
+
+unlink(qw(y x-dir/x));
+rmdir('x-dir');
+
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/options/dash-e b/src/kmk/tests/scripts/options/dash-e
new file mode 100644
index 0000000..17c3fc8
--- /dev/null
+++ b/src/kmk/tests/scripts/options/dash-e
@@ -0,0 +1,24 @@
+#                                                                    -*-perl-*-
+
+$description = "The following test creates a makefile to ...";
+
+$details = "";
+
+$extraENV{GOOGLE} = 'boggle';
+
+open(MAKEFILE,"> $makefile");
+
+print MAKEFILE <<'EOF';
+GOOGLE = bazzle
+all:; @echo "$(GOOGLE)"
+EOF
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile, '-e' ,&get_logfile);
+
+$answer = "boggle\n";
+
+&compare_output($answer,&get_logfile(1));
+
+1;
diff --git a/src/kmk/tests/scripts/options/dash-f b/src/kmk/tests/scripts/options/dash-f
new file mode 100644
index 0000000..3aa4746
--- /dev/null
+++ b/src/kmk/tests/scripts/options/dash-f
@@ -0,0 +1,85 @@
+$description = "The following test tests that if you specify greater \n"
+              ."than one '-f makefilename' on the command line, \n"
+              ."that make concatenates them.  This test creates three \n"
+              ."makefiles and specifies all of them with the -f option \n"
+              ."on the command line.  To make sure they were concatenated, \n"
+              ."we then call make with the rules from the concatenated \n"
+              ."makefiles one at a time.  Finally, it calls all three \n"
+              ."rules in one call to make and checks that the output\n"
+              ."is in the correct order.";
+
+$makefile2 = &get_tmpfile;
+$makefile3 = &get_tmpfile;
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "all: \n";
+print MAKEFILE "\t\@echo This is the output from the original makefile\n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+# Create a second makefile
+open(MAKEFILE,"> $makefile2");
+print MAKEFILE "TWO: \n";
+print MAKEFILE "\t\@echo This is the output from makefile 2\n";
+close(MAKEFILE);
+
+# Create a third makefile
+open(MAKEFILE,"> $makefile3");
+print MAKEFILE "THREE: \n";
+print MAKEFILE "\t\@echo This is the output from makefile 3\n";
+close(MAKEFILE);
+
+
+# Create the answer to what should be produced by this Makefile
+$answer = "This is the output from the original makefile\n";
+
+# Run make to catch the default rule
+&run_make_with_options($makefile,"-f $makefile2 -f $makefile3",&get_logfile,0);
+
+&compare_output($answer,&get_logfile(1));
+
+
+# Run Make again with the rule from the second makefile: TWO
+$answer = "This is the output from makefile 2\n";
+
+&run_make_with_options($makefile,"-f $makefile2 -f $makefile3 TWO",&get_logfile,0);
+
+&compare_output($answer,&get_logfile(1));
+     
+
+# Run Make again with the rule from the third makefile: THREE
+
+$answer = "This is the output from makefile 3\n";
+&run_make_with_options($makefile,
+                       "-f $makefile2 -f $makefile3 THREE",
+                       &get_logfile,
+                       0);
+&compare_output($answer,&get_logfile(1));
+
+
+# Run Make again with ALL three rules in the order 2 1 3 to make sure
+# that all rules are executed in the proper order
+
+$answer = "This is the output from makefile 2\n";
+$answer .= "This is the output from the original makefile\n";
+$answer .= "This is the output from makefile 3\n";
+&run_make_with_options($makefile,
+                       "-f $makefile2 -f $makefile3 TWO all THREE",
+		       &get_logfile,
+                       0);
+&compare_output($answer,&get_logfile(1));
+       
+
+
+
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/options/dash-k b/src/kmk/tests/scripts/options/dash-k
new file mode 100644
index 0000000..e2bb7c9
--- /dev/null
+++ b/src/kmk/tests/scripts/options/dash-k
@@ -0,0 +1,114 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the make -k (don't stop on error) option.\n";
+
+$details = "\
+The makefile created in this test is a simulation of building
+a small product.  However, the trick to this one is that one
+of the dependencies of the main target does not exist.
+Without the -k option, make would fail immediately and not
+build any part of the target.  What we are looking for here,
+is that make builds the rest of the dependencies even though
+it knows that at the end it will fail to rebuild the main target.";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE <<EOF;
+VPATH = $workdir
+edit:  main.o kbd.o commands.o display.o
+\t\@echo cc -o edit main.o kbd.o commands.o display.o
+
+main.o : main.c defs.h
+\t\@echo cc -c main.c
+
+kbd.o : kbd.c defs.h command.h
+\t\@echo cc -c kbd.c
+
+commands.o : command.c defs.h command.h
+\t\@echo cc -c commands.c
+
+display.o : display.c defs.h buffer.h
+\t\@echo cc -c display.c
+EOF
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+
+@files_to_touch = ("$workdir${pathsep}main.c","$workdir${pathsep}defs.h",
+               "$workdir${pathsep}command.h",
+               "$workdir${pathsep}commands.c","$workdir${pathsep}display.c",
+               "$workdir${pathsep}buffer.h",
+               "$workdir${pathsep}command.c");
+
+&touch(@files_to_touch);
+
+if ($vos) {
+  $error_code = 3307;
+}
+else {
+  $error_code = 512;
+}
+
+&run_make_with_options($makefile, "-j1 -k", &get_logfile, $error_code);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "cc -c main.c
+$make_name: *** No rule to make target 'kbd.c', needed by 'kbd.o'.
+cc -c commands.c
+cc -c display.c
+$make_name: Target 'edit' not remade because of errors.\n";
+
+# COMPARE RESULTS
+
+&compare_output($answer, &get_logfile(1));
+
+unlink(@files_to_touch) unless $keep;
+
+
+# TEST 1: Make sure that top-level targets that depend on targets that
+# previously failed to build, aren't attempted.  Regression for PR/1634.
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE, "> $makefile2");
+print MAKEFILE <<'EOF';
+.SUFFIXES:
+
+all: exe1 exe2; @echo making $@
+
+exe1 exe2: lib; @echo cp $^ $@
+
+lib: foo.o; @echo cp $^ $@
+
+foo.o: ; exit 1
+EOF
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile2, "-k", &get_logfile, $error_code);
+
+$answer = "exit 1
+$make_name: *** [$makefile2:9: foo.o] Error 1
+$make_name: Target 'all' not remade because of errors.\n";
+
+&compare_output($answer, &get_logfile(1));
+
+# TEST -- make sure we keep the error code if we can't create an included
+# makefile.
+
+run_make_test('all: ; @echo hi
+include ifile
+ifile: no-such-file; @false
+',
+              '-k',
+              "#MAKEFILE#:2: ifile: No such file or directory
+#MAKE#: *** No rule to make target 'no-such-file', needed by 'ifile'.
+#MAKE#: Failed to remake makefile 'ifile'.
+hi\n",
+              512);
+
+1;
diff --git a/src/kmk/tests/scripts/options/dash-l b/src/kmk/tests/scripts/options/dash-l
new file mode 100644
index 0000000..0b0f196
--- /dev/null
+++ b/src/kmk/tests/scripts/options/dash-l
@@ -0,0 +1,56 @@
+#                                                                    -*-perl-*-
+# Date: Tue, 11 Aug 1992 09:34:26 -0400
+# From: pds@lemming.webo.dg.com (Paul D. Smith)
+
+$description = "Test load balancing (-l) option.";
+
+$details = "\
+This test creates a makefile where all depends on three rules
+which contain the same body.  Each rule checks for the existence
+of a temporary file; if it exists an error is generated.  If it
+doesn't exist then it is created, the rule sleeps, then deletes
+the temp file again.  Thus if any of the rules are run in
+parallel the test will fail.  When make is called in this test,
+it is given the -l option with a value of 0.0001.  This ensures
+that the load will be above this number and make will therefore
+decide that it cannot run more than one job even though -j 4 was
+also specified on the command line.";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE <<'EOF';
+SHELL = /bin/sh
+
+define test
+if [ ! -f test-file ]; then \
+  echo >> test-file; sleep 2; rm -f test-file; \
+else \
+  echo $@ FAILED; \
+fi
+endef
+
+all : ONE TWO THREE
+ONE : ; @$(test)
+TWO : ; @$(test)
+THREE : ; @$(test)
+EOF
+
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+$mkoptions = "-l 0.0001";
+$mkoptions .= " -j 4" if ($parallel_jobs);
+
+# We have to wait longer than the default (5s).
+&run_make_with_options($makefile, $mkoptions, &get_logfile, 0, 8);
+
+$slurp = &read_file_into_string (&get_logfile(1));
+if ($slurp !~ /cannot enforce load limit/) {
+  &compare_output("", &get_logfile(1));
+}
+
+1;
diff --git a/src/kmk/tests/scripts/options/dash-n b/src/kmk/tests/scripts/options/dash-n
new file mode 100644
index 0000000..02ae4a9
--- /dev/null
+++ b/src/kmk/tests/scripts/options/dash-n
@@ -0,0 +1,100 @@
+#                                                                    -*-perl-*-
+$description = "Test the -n option.\n";
+
+$details = "Try various uses of -n and ensure they all give the correct results.\n";
+
+touch('orig');
+
+run_make_test(q!
+final: intermediate ; echo >> $@
+intermediate: orig ; echo >> $@
+!,
+              '', "echo >> intermediate\necho >> final\n");
+
+# TEST 1
+
+run_make_test(undef, '-Worig -n', "echo >> intermediate\necho >> final\n");
+
+rmfiles(qw(orig intermediate final));
+
+# We consider the actual updated timestamp of targets with all
+# recursive commands, even with -n.  Switching this to the new model
+# is non-trivial because we use a trick below to change the log content
+# before we compare it ...
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE, "> $makefile2");
+
+print MAKEFILE <<'EOF';
+.SUFFIXES:
+BAR =     # nothing
+FOO = +$(BAR)
+a: b; echo > $@
+b: c; $(FOO)
+EOF
+
+close(MAKEFILE);
+
+&utouch(-20, 'b');
+&utouch(-10, 'a');
+&touch('c');
+
+# TEST 2
+
+&run_make_with_options($makefile2, "", &get_logfile);
+$answer = "$make_name: 'a' is up to date.\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST 3
+
+&run_make_with_options($makefile2, "-n", &get_logfile);
+$answer = "$make_name: 'a' is up to date.\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST 4
+
+unlink(qw(a b));
+
+&run_make_with_options($makefile2, "-t -n", &get_logfile);
+
+open(DASH_N_LOG, ">>" . &get_logfile(1));
+print DASH_N_LOG "a exists but should not!\n" if -e 'a';
+print DASH_N_LOG "b exists but should not!\n" if -e 'b';
+close(DASH_N_LOG);
+
+&compare_output("touch b\ntouch a\n", &get_logfile(1));
+
+# CLEANUP
+
+unlink(qw(a b c));
+
+# Ensure -n continues to be included with recursive/re-execed make
+# See Savannah bug #38051
+
+$topmake = &get_tmpfile;
+$submake = &get_tmpfile;
+
+open(MAKEFILE, "> $topmake");
+print MAKEFILE <<"EOF";
+foo: ; \@\$(MAKE) -f "$submake" bar
+EOF
+close(MAKEFILE);
+
+
+# The bar target should print what would happen, but not actually run
+open(MAKEFILE, "> $submake");
+print MAKEFILE <<'EOF';
+inc: ; touch $@
+-include inc
+bar: ; @echo $(strip $(MAKEFLAGS))
+EOF
+close(MAKEFILE);
+
+&run_make_with_options($topmake, '-n --no-print-directory', &get_logfile);
+$answer = "$make_command -f \"$submake\" bar\ntouch inc\necho n --no-print-directory\n";
+&compare_output($answer, &get_logfile(1));
+
+unlink('inc');
+
+1;
diff --git a/src/kmk/tests/scripts/options/dash-q b/src/kmk/tests/scripts/options/dash-q
new file mode 100644
index 0000000..e67b55d
--- /dev/null
+++ b/src/kmk/tests/scripts/options/dash-q
@@ -0,0 +1,86 @@
+#                                                                    -*-perl-*-
+$description = "Test the -q option.\n";
+
+$details = "Try various uses of -q and ensure they all give the correct results.\n";
+
+# TEST 0
+
+run_make_test(qq!
+one:
+two: ;
+three: ; :
+four: ; \$(.XY)
+five: ; \\
+ \$(.XY)
+six: ; \\
+ \$(.XY)
+\t\$(.XY)
+seven: ; \\
+ \$(.XY)
+\t: foo
+\t\$(.XY)
+!,
+              '-q one', '');
+
+# TEST 1
+
+run_make_test(undef, '-q two', '');
+
+# TEST 2
+
+run_make_test(undef, '-q three', '', 256);
+
+# TEST 3
+
+run_make_test(undef, '-q four', '');
+
+# TEST 4
+
+run_make_test(undef, '-q five', '');
+
+# TEST 5
+
+run_make_test(undef, '-q six', '');
+
+# TEST 6
+
+run_make_test(undef, '-q seven', '', 256);
+
+# TEST 7 : Savannah bug # 7144
+
+run_make_test('
+one:: ; @echo one
+one:: ; @echo two
+',
+              '-q', '', 256);
+
+# TEST 7 : Savannah bug # 42249
+# Make sure we exit with 1 even for prerequisite updates
+run_make_test('
+build-stamp: ; echo $@
+build-arch: build-stamp
+build-x: build-arch
+build-y: build-x
+',
+              '-q build-y', '', 256);
+
+# TEST 8
+# Make sure we exit with 2 on error even with -q
+run_make_test('
+build-stamp: ; echo $@
+build-arch: build-stamp-2
+build-x: build-arch
+build-y: build-x
+',
+              '-q build-y', "#MAKE#: *** No rule to make target 'build-stamp-2', needed by 'build-arch'.  Stop.\n", 512);
+
+# TEST 9 : Savannah bug # 47151
+# Make sure we exit with 1 when invoking a recursive make
+run_make_test('
+foo: bar ; echo foo
+bar: ; @$(MAKE) -f #MAKEFILE# baz
+baz: ; echo baz
+',
+              '-q foo', '', 256);
+
+1;
diff --git a/src/kmk/tests/scripts/options/dash-t b/src/kmk/tests/scripts/options/dash-t
new file mode 100644
index 0000000..ec27d7a
--- /dev/null
+++ b/src/kmk/tests/scripts/options/dash-t
@@ -0,0 +1,58 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the -t option.\n";
+
+$details = "Look out for regressions of prior bugs related to -t.\n";
+# That means, nobody has even tried to make the tests below comprehensive
+
+# TEST 0
+# bug reported by Henning Makholm <henning@makholm.net> on 2001-11-03:
+#   make 3.79.1 touches only interm-[ab] but reports final-[a] as
+#   'up to date' without touching them.
+# The 'obvious' fix didn't work for double-colon rules, so pay special
+# attention to them.
+
+open(MAKEFILE, "> $makefile");
+print MAKEFILE <<'EOMAKE';
+final-a: interm-a ; echo >> $@
+final-b: interm-b ; echo >> $@
+interm-a:: orig1-a ; echo >> $@
+interm-a:: orig2-a ; echo >> $@
+interm-b:: orig1-b ; echo >> $@
+interm-b:: orig2-b ; echo >> $@
+EOMAKE
+close(MAKEFILE);
+
+&utouch(-30, 'orig1-a','orig2-b');
+&utouch(-20, 'interm-a','interm-b');
+&utouch(-10, 'final-a','final-b');
+&touch('orig2-a','orig1-b');
+
+&run_make_with_options($makefile, "-t final-a final-b", &get_logfile);
+$answer = "touch interm-a\ntouch final-a\ntouch interm-b\ntouch final-b\n";
+&compare_output($answer, &get_logfile(1));
+
+unlink('orig1-a', 'orig2-a', 'interm-a', 'final-a');
+unlink('orig1-b', 'orig2-b', 'interm-b', 'final-b');
+
+# TEST 1
+# -t should not touch files with no commands.
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE, "> $makefile2");
+print MAKEFILE <<'EOMAKE';
+
+PHOOEY: xxx
+xxx: ; @:
+
+EOMAKE
+close(MAKEFILE);
+
+&run_make_with_options($makefile2, "-t", &get_logfile);
+$answer = "touch xxx\n";
+&compare_output($answer, &get_logfile(1));
+
+unlink('xxx');
+
+1;
diff --git a/src/kmk/tests/scripts/options/eval b/src/kmk/tests/scripts/options/eval
new file mode 100644
index 0000000..0f82409
--- /dev/null
+++ b/src/kmk/tests/scripts/options/eval
@@ -0,0 +1,29 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the --eval option.";
+
+$details = "Verify that --eval options take effect,
+and are passed to sub-makes.";
+
+# Verify that --eval is evaluated first
+run_make_test(q!
+BAR = bar
+all: ; @echo all
+recurse: ; @$(MAKE) -f #MAKEFILE# && echo recurse!,
+              '--eval=\$\(info\ eval\) FOO=\$\(BAR\)', "eval\nall");
+
+# Make sure that --eval is handled correctly during recursion
+run_make_test(undef, '--no-print-directory --eval=\$\(info\ eval\) recurse',
+              "eval\neval\nall\nrecurse");
+
+# Make sure that --eval is handled correctly during restarting
+run_make_test(q!
+all: ; @echo $@
+-include gen.mk
+gen.mk: ; @echo > $@
+!,
+              '--eval=\$\(info\ eval\)', "eval\neval\nall");
+
+unlink('gen.mk');
+
+1;
diff --git a/src/kmk/tests/scripts/options/general b/src/kmk/tests/scripts/options/general
new file mode 100644
index 0000000..d35bb35
--- /dev/null
+++ b/src/kmk/tests/scripts/options/general
@@ -0,0 +1,35 @@
+#                                                                    -*-perl-*-
+$description = "Test generic option processing.\n";
+
+open(MAKEFILE, "> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "foo 1foo: ; \@echo \$\@\n";
+
+close(MAKEFILE);
+
+# TEST 0
+
+&run_make_with_options($makefile, "-j 1foo", &get_logfile);
+if (!$parallel_jobs) {
+  $answer = "$make_name: Parallel jobs (-j) are not supported on this platform.\n$make_name: Resetting to single job (-j1) mode.\n1foo\n";
+}
+else {
+  $answer = "1foo\n";
+}
+
+# TEST 1
+
+# This test prints the usage string; I don't really know a good way to
+# test it.  I guess I could invoke make with a known-bad option to see
+# what the usage looks like, then compare it to what I get here... :(
+
+# If I were always on UNIX, I could invoke it with 2>/dev/null, then
+# just check the error code.
+
+&run_make_with_options($makefile, "-j1foo 2>/dev/null", &get_logfile, 512);
+$answer = "";
+&compare_output($answer, &get_logfile(1));
+
+1;
diff --git a/src/kmk/tests/scripts/options/print-directory b/src/kmk/tests/scripts/options/print-directory
new file mode 100644
index 0000000..db762b2
--- /dev/null
+++ b/src/kmk/tests/scripts/options/print-directory
@@ -0,0 +1,33 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the -w option to GNU make.";
+
+# Simple test without -w
+run_make_test(q!
+all: ; @echo hi
+!,
+        "", "hi\n");
+
+# Simple test with -w
+run_make_test(undef, "-w",
+              "#MAKE#: Entering directory '#PWD#'\nhi\n#MAKE#: Leaving directory '#PWD#'\n");
+
+# Test makefile rebuild to ensure no enter/leave
+run_make_test(q!
+include foo
+all: ;@:
+foo: ; touch foo
+!,
+        "", "touch foo\n");
+unlink('foo');
+
+# Test makefile rebuild with -w
+run_make_test(q!
+include foo
+all: ;@:
+foo: ; touch foo
+!,
+        "-w", "#MAKE#: Entering directory '#PWD#'\ntouch foo\n#MAKE#: Leaving directory '#PWD#'\n");
+unlink('foo');
+
+1;
diff --git a/src/kmk/tests/scripts/options/symlinks b/src/kmk/tests/scripts/options/symlinks
new file mode 100644
index 0000000..a1bfce0
--- /dev/null
+++ b/src/kmk/tests/scripts/options/symlinks
@@ -0,0 +1,68 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the -L option.";
+
+$details = "Verify that symlink handling with and without -L works properly.";
+
+# Only run these tests if the system sypports symlinks
+
+# Apparently the Windows port of Perl reports that it does support symlinks
+# (in that the symlink() function doesn't fail) but it really doesn't, so
+# check for it explicitly.
+
+if ($port_type eq 'W32' || !( eval { symlink("",""); 1 })) {
+  # This test is N/A 
+  -1;
+} else {
+
+  # Set up a symlink sym -> dep
+  # We'll make both dep and targ older than sym
+  $pwd =~ m%/([^/]+)$%;
+  $dirnm = $1;
+  &utouch(-10, 'dep');
+  &utouch(-5, 'targ');
+  symlink("../$dirnm/dep", 'sym');
+
+  # Without -L, nothing should happen
+  # With -L, it should update targ
+  run_make_test('targ: sym ; @echo make $@ from $<', '',
+                "#MAKE#: 'targ' is up to date.");
+  run_make_test(undef, '-L', "make targ from sym");
+
+  # Now update dep; in all cases targ should be out of date.
+  &touch('dep');
+  run_make_test(undef, '', "make targ from sym");
+  run_make_test(undef, '-L', "make targ from sym");
+
+  # Now update targ; in all cases targ should be up to date.
+  &touch('targ');
+  run_make_test(undef, '', "#MAKE#: 'targ' is up to date.");
+  run_make_test(undef, '-L', "#MAKE#: 'targ' is up to date.");
+
+  # Add in a new link between sym and dep.  Be sure it's newer than targ.
+  sleep(1);
+  rename('dep', 'dep1');
+  symlink('dep1', 'dep');
+
+  # Without -L, nothing should happen
+  # With -L, it should update targ
+  run_make_test(undef, '', "#MAKE#: 'targ' is up to date.");
+  run_make_test(undef, '-L', "make targ from sym");
+
+  rmfiles('targ', 'dep', 'sym', 'dep1');
+
+  # Check handling when symlinks point to non-existent files.  Without -L we
+  # should get an error: with -L we should use the timestamp of the symlink.
+
+  symlink("../$dirname/dep", 'sym');
+  run_make_test('targ: sym ; @echo make $@ from $<', '',
+                "#MAKE#: *** No rule to make target 'sym', needed by 'targ'.  Stop.", 512);
+
+  run_make_test('targ: sym ; @echo make $@ from $<', '-L',
+                'make targ from sym');
+
+
+  rmfiles('targ', 'sym');
+
+  1;
+}
diff --git a/src/kmk/tests/scripts/options/warn-undefined-variables b/src/kmk/tests/scripts/options/warn-undefined-variables
new file mode 100644
index 0000000..ce15507
--- /dev/null
+++ b/src/kmk/tests/scripts/options/warn-undefined-variables
@@ -0,0 +1,25 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the --warn-undefined-variables option.";
+
+$details = "Verify that warnings are printed for referencing undefined variables.";
+
+# Without --warn-undefined-variables, nothing should happen
+run_make_test('
+EMPTY =
+EREF = $(EMPTY)
+UREF = $(UNDEFINED)
+
+SEREF := $(EREF)
+SUREF := $(UREF)
+
+all: ; @echo ref $(EREF) $(UREF)',
+              '', 'ref');
+
+# With --warn-undefined-variables, it should warn me
+run_make_test(undef, '--warn-undefined-variables',
+              "#MAKEFILE#:7: warning: undefined variable 'UNDEFINED'
+#MAKEFILE#:9: warning: undefined variable 'UNDEFINED'
+ref");
+
+1;
diff --git a/src/kmk/tests/scripts/targets/DEFAULT b/src/kmk/tests/scripts/targets/DEFAULT
new file mode 100644
index 0000000..f3d5148
--- /dev/null
+++ b/src/kmk/tests/scripts/targets/DEFAULT
@@ -0,0 +1,53 @@
+$description = "The following test creates a makefile to override part\n"
+              ."of one Makefile with Another Makefile with the .DEFAULT\n"
+              ."rule.";
+
+$details = "This tests the use of the .DEFAULT special target to say that \n"
+          ."to remake any target that cannot be made fram the information\n"
+          ."in the containing makefile, make should look in another makefile\n"
+          ."This test gives this makefile the target bar which is not \n"
+          ."defined here but passes the target bar on to another makefile\n"
+          ."which does have the target bar defined.\n";
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "foo:\n";
+print MAKEFILE "\t\@echo Executing rule FOO\n\n";
+print MAKEFILE ".DEFAULT:\n";
+print MAKEFILE "\t\@\$(MAKE) -f $makefile2 \$\@ \n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+
+open(MAKEFILE,"> $makefile2");
+
+print MAKEFILE "bar:\n";
+print MAKEFILE "\t\@echo Executing rule BAR\n\n";
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile,'bar',&get_logfile);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "${make_name}[1]: Entering directory '$pwd'\n"
+        . "Executing rule BAR\n"
+        . "${make_name}[1]: Leaving directory '$pwd'\n";
+
+# COMPARE RESULTS
+
+&compare_output($answer,&get_logfile(1));
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/targets/DELETE_ON_ERROR b/src/kmk/tests/scripts/targets/DELETE_ON_ERROR
new file mode 100644
index 0000000..f0d9f9b
--- /dev/null
+++ b/src/kmk/tests/scripts/targets/DELETE_ON_ERROR
@@ -0,0 +1,22 @@
+#! -*-perl-*-
+
+$description = "Test the behaviour of the .DELETE_ON_ERROR target.";
+
+$details = "";
+
+run_make_test('
+.DELETE_ON_ERROR:
+all: ; exit 1 > $@
+',
+              '', "exit 1 > all\n#MAKE#: *** [#MAKEFILE#:3: all] Error 1\n#MAKE#: *** Deleting file 'all'", 512);
+
+run_make_test('
+.DELETE_ON_ERROR:
+all: foo.x ;
+%.x : %.q ; echo > $@
+%.q : ; exit 1 > $@
+',
+              '', "exit 1 > foo.q\n#MAKE#: *** [#MAKEFILE#:5: foo.q] Error 1\n#MAKE#: *** Deleting file 'foo.q'", 512);
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/targets/FORCE b/src/kmk/tests/scripts/targets/FORCE
new file mode 100644
index 0000000..eb8f251
--- /dev/null
+++ b/src/kmk/tests/scripts/targets/FORCE
@@ -0,0 +1,40 @@
+#                                                                    -*-perl-*-
+
+$description = "The following tests rules without Commands or Dependencies.";
+
+$details = "If the rule ...\n";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE ".IGNORE :\n";
+print MAKEFILE "clean: FORCE\n";
+print MAKEFILE "\t$delete_command clean\n";
+print MAKEFILE "FORCE:\n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+
+# Create a file named "clean".  This is the same name as the target clean
+# and tricks the target into thinking that it is up to date.  (Unless you
+# use the .PHONY target.
+&touch("clean");
+
+$answer = "$delete_command clean\n";
+&run_make_with_options($makefile,"clean",&get_logfile);
+
+&compare_output($answer,&get_logfile(1));
+
+1;
+
+
+
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/targets/INTERMEDIATE b/src/kmk/tests/scripts/targets/INTERMEDIATE
new file mode 100644
index 0000000..e2f08bf
--- /dev/null
+++ b/src/kmk/tests/scripts/targets/INTERMEDIATE
@@ -0,0 +1,112 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the behaviour of the .INTERMEDIATE target.";
+
+$details = "\
+Test the behavior of the .INTERMEDIATE special target.
+Create a makefile where a file would not normally be considered
+intermediate, then specify it as .INTERMEDIATE.  Build and ensure it's
+deleted properly.  Rebuild to ensure that it's not created if it doesn't
+exist but doesn't need to be built.  Change the original and ensure
+that the intermediate file and the ultimate target are both rebuilt, and
+that the intermediate file is again deleted.
+
+Try this with implicit rules and explicit rules: both should work.\n";
+
+open(MAKEFILE,"> $makefile");
+
+print MAKEFILE <<'EOF';
+
+.INTERMEDIATE: foo.e bar.e
+
+# Implicit rule test
+%.d : %.e ; cp $< $@
+%.e : %.f ; cp $< $@
+
+foo.d: foo.e
+
+# Explicit rule test
+foo.c: foo.e bar.e; cat $^ > $@
+EOF
+
+close(MAKEFILE);
+
+# TEST #0
+
+&utouch(-20, 'foo.f', 'bar.f');
+
+&run_make_with_options($makefile,'foo.d',&get_logfile);
+$answer = "cp foo.f foo.e\ncp foo.e foo.d\nrm foo.e\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST #1
+
+&run_make_with_options($makefile,'foo.d',&get_logfile);
+$answer = "$make_name: 'foo.d' is up to date.\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST #2
+
+&utouch(-10, 'foo.d');
+&touch('foo.f');
+
+&run_make_with_options($makefile,'foo.d',&get_logfile);
+$answer = "cp foo.f foo.e\ncp foo.e foo.d\nrm foo.e\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST #3
+# kmk+fast: differs because of different hashing.
+
+&run_make_with_options($makefile,'foo.c',&get_logfile);
+$answer = "cp foo.f foo.e\ncp bar.f bar.e\ncat foo.e bar.e > foo.c\n"
+        . (!$is_kmk && !$is_fast ? "rm bar.e foo.e\n" : "rm foo.e bar.e\n");
+&compare_output($answer, &get_logfile(1));
+
+# TEST #4
+
+&run_make_with_options($makefile,'foo.c',&get_logfile);
+$answer = "$make_name: 'foo.c' is up to date.\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST #5
+# kmk+fast: differs because of different hashing.
+
+&utouch(-10, 'foo.c');
+&touch('foo.f');
+
+&run_make_with_options($makefile,'foo.c',&get_logfile);
+$answer = "cp foo.f foo.e\ncp bar.f bar.e\ncat foo.e bar.e > foo.c\n"
+        . (!$is_kmk && !$is_fast ? "rm bar.e foo.e\n" : "rm foo.e bar.e\n");
+&compare_output($answer, &get_logfile(1));
+
+# TEST #6 -- added for PR/1669: don't remove files mentioned on the cmd line.
+
+&run_make_with_options($makefile,'foo.e',&get_logfile);
+$answer = "cp foo.f foo.e\n";
+&compare_output($answer, &get_logfile(1));
+
+unlink('foo.f', 'foo.e', 'foo.d', 'foo.c', 'bar.f', 'bar.e', 'bar.d', 'bar.c');
+
+# TEST #7 -- added for PR/1423
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE, "> $makefile2");
+
+print MAKEFILE <<'EOF';
+all: foo
+foo.a: ; touch $@
+%: %.a ; touch $@
+.INTERMEDIATE: foo.a
+EOF
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile2, '-R', &get_logfile);
+$answer = "touch foo.a\ntouch foo\nrm foo.a\n";
+&compare_output($answer, &get_logfile(1));
+
+unlink('foo');
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/targets/ONESHELL b/src/kmk/tests/scripts/targets/ONESHELL
new file mode 100644
index 0000000..87713da
--- /dev/null
+++ b/src/kmk/tests/scripts/targets/ONESHELL
@@ -0,0 +1,88 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the behaviour of the .ONESHELL target.";
+
+$details = "";
+
+# Some shells (*shakes fist at Solaris*) cannot handle multiple flags in
+# separate arguments.
+my $t = `/bin/sh -e -c true 2>/dev/null`;
+my $multi_ok = $? == 0;
+
+# Simple
+
+run_make_test(q!
+.ONESHELL:
+all:
+	a=$$$$
+	[ 0"$$a" -eq "$$$$" ] || echo fail
+!,
+              '', 'a=$$
+[ 0"$a" -eq "$$" ] || echo fail
+');
+
+# Simple but use multi-word SHELLFLAGS
+
+if ($multi_ok) {
+    run_make_test(q!
+.ONESHELL:
+.SHELLFLAGS = -e -c
+all:
+	a=$$$$
+	[ 0"$$a" -eq "$$$$" ] || echo fail
+!,
+              '', 'a=$$
+[ 0"$a" -eq "$$" ] || echo fail
+');
+}
+
+# Again, but this time with inner prefix chars
+
+run_make_test(q!
+.ONESHELL:
+all:
+	a=$$$$
+	@-+    [ 0"$$a" -eq "$$$$" ] || echo fail
+!,
+              '', 'a=$$
+[ 0"$a" -eq "$$" ] || echo fail
+');
+
+# This time with outer prefix chars
+
+run_make_test(q!
+.ONESHELL:
+all:
+	   @a=$$$$
+	    [ 0"$$a" -eq "$$$$" ] || echo fail
+!,
+              '', '');
+
+
+# This time with outer and inner prefix chars
+
+run_make_test(q!
+.ONESHELL:
+all:
+	   @a=$$$$
+	    -@     +[ 0"$$a" -eq "$$$$" ] || echo fail
+!,
+              '', '');
+
+
+# Now try using a different interpreter
+
+run_make_test(q!
+.RECIPEPREFIX = >
+.ONESHELL:
+SHELL = #PERL#
+.SHELLFLAGS = -e
+all:
+>	   @$$a=5
+>	    +7;
+>	@y=qw(a b c);
+>print "a = $$a, y = (@y)\n";
+!,
+              '', "a = 12, y = (a b c)\n");
+
+1;
diff --git a/src/kmk/tests/scripts/targets/PHONY b/src/kmk/tests/scripts/targets/PHONY
new file mode 100644
index 0000000..c8e2110
--- /dev/null
+++ b/src/kmk/tests/scripts/targets/PHONY
@@ -0,0 +1,54 @@
+#                                                                    -*-perl-*-
+
+$description = "The following tests the use of a PHONY target.  It makes\n"
+              ."sure that the rules under a target get executed even if\n"
+              ."a filename of the same name of the target exists in the\n"
+              ."directory.\n";
+
+$details = "This makefile in this test declares the target clean to be a \n"
+          ."PHONY target.  We then create a file named \"clean\" in the \n"
+          ."directory.  Although this file exists, the rule under the target\n"
+          ."clean should still execute because of it's phony status.";
+
+$example = "EXAMPLE_FILE";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE ".PHONY : clean \n";
+print MAKEFILE "all: \n";
+print MAKEFILE "\t\@echo This makefile did not clean the dir ... good\n";
+print MAKEFILE "clean: \n";
+print MAKEFILE "\t$delete_command $example clean\n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&touch($example);
+
+# Create a file named "clean".  This is the same name as the target clean
+# and tricks the target into thinking that it is up to date.  (Unless you
+# use the .PHONY target.
+&touch("clean");
+
+$answer = "$delete_command $example clean\n";
+&run_make_with_options($makefile,"clean",&get_logfile);
+
+if (-f $example) {
+  $test_passed = 0;
+}
+
+&compare_output($answer,&get_logfile(1));
+
+1;
+
+
+
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/targets/POSIX b/src/kmk/tests/scripts/targets/POSIX
new file mode 100644
index 0000000..5c3c7f8
--- /dev/null
+++ b/src/kmk/tests/scripts/targets/POSIX
@@ -0,0 +1,56 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the behaviour of the .POSIX target.";
+
+$details = "";
+
+
+# Ensure turning on .POSIX enables the -e flag for the shell
+# We can't assume the exit value of "false" because on different systems it's
+# different.
+
+my $script = 'false; true';
+my $flags = '-ec';
+my $out = `/bin/sh $flags '$script' 2>&1`;
+my $err = $? >> 8;
+run_make_test(qq!
+.POSIX:
+all: ; \@$script
+!,
+              '', "#MAKE#: *** [#MAKEFILE#:3: all] Error $err\n", 512);
+
+# User settings must override .POSIX
+$flags = '-xc';
+$out = `/bin/sh $flags '$script' 2>&1`;
+run_make_test(qq!
+.SHELLFLAGS = $flags
+.POSIX:
+all: ; \@$script
+!,
+              '', $out);
+
+# Test the default value of various POSIX-specific variables
+my %POSIX = (AR => 'ar', ARFLAGS => '-rv',
+             YACC => 'yacc', YFLAGS => '',
+             LEX => 'lex', LFLAGS => '',
+             LDFLAGS => '',
+             CC => 'c99', CFLAGS => '-O',
+             FC => 'fort77', FFLAGS => '-O 1',
+             GET => 'get', GFLAGS => '',
+             SCCSFLAGS => '', SCCSGETFLAGS => '-s');
+my $make = join('', map { "\t\@echo '$_=\$($_)'\n" } sort keys %POSIX);
+my $r = join('', map { "$_=$POSIX{$_}\n"} sort keys %POSIX);
+run_make_test(qq!
+.POSIX:
+all:
+$make
+!,
+              '', $r);
+
+# Make sure that local settings take precedence
+%extraENV = map { $_ => "xx-$_" } keys %POSIX;
+$r = join('', map { "$_=xx-$_\n"} sort keys %POSIX);
+run_make_test(undef, '', $r);
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/targets/SECONDARY b/src/kmk/tests/scripts/targets/SECONDARY
new file mode 100644
index 0000000..447c275
--- /dev/null
+++ b/src/kmk/tests/scripts/targets/SECONDARY
@@ -0,0 +1,190 @@
+#! -*-perl-*-
+
+$description = "Test the behaviour of the .SECONDARY target.";
+
+$details = "\
+Test the behavior of the .SECONDARY special target.
+Create a makefile where a file would not normally be considered
+intermediate, then specify it as .SECONDARY.  Build and note that it's
+not automatically deleted.  Delete the file.  Rebuild to ensure that
+it's not created if it doesn't exist but doesn't need to be built.
+Change the original and ensure that the secondary file and the ultimate
+target are both rebuilt, and that the secondary file is not deleted.
+
+Try this with implicit rules and explicit rules: both should work.\n";
+
+open(MAKEFILE,"> $makefile");
+
+print MAKEFILE <<'EOF';
+
+.SECONDARY: foo.e
+
+# Implicit rule test
+%.d : %.e ; cp $< $@
+%.e : %.f ; cp $< $@
+
+foo.d: foo.e
+
+# Explicit rule test
+foo.c: foo.e ; cp $< $@
+EOF
+
+close(MAKEFILE);
+
+# TEST #1
+
+&utouch(-20, 'foo.f');
+
+&run_make_with_options($makefile,'foo.d',&get_logfile);
+$answer = "cp foo.f foo.e\ncp foo.e foo.d\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST #2
+
+unlink('foo.e');
+
+&run_make_with_options($makefile,'foo.d',&get_logfile);
+$answer = "$make_name: 'foo.d' is up to date.\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST #3
+
+&utouch(-10, 'foo.d');
+&touch('foo.f');
+
+&run_make_with_options($makefile,'foo.d',&get_logfile);
+$answer = "cp foo.f foo.e\ncp foo.e foo.d\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST #4
+
+&run_make_with_options($makefile,'foo.c',&get_logfile);
+$answer = "cp foo.e foo.c\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST #5
+
+unlink('foo.e');
+
+&run_make_with_options($makefile,'foo.c',&get_logfile);
+$answer = "$make_name: 'foo.c' is up to date.\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST #6
+
+&utouch(-10, 'foo.c');
+&touch('foo.f');
+
+&run_make_with_options($makefile,'foo.c',&get_logfile);
+$answer = "cp foo.f foo.e\ncp foo.e foo.c\n";
+&compare_output($answer, &get_logfile(1));
+
+unlink('foo.f', 'foo.e', 'foo.d', 'foo.c');
+
+# TEST #7 -- test the "global" .SECONDARY, with no targets.
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE, "> $makefile2");
+
+print MAKEFILE <<'EOF';
+.SECONDARY:
+
+final: intermediate
+intermediate: source
+
+final intermediate source:
+	echo $< > $@
+EOF
+
+close(MAKEFILE);
+
+&utouch(-10, 'source');
+touch('final');
+
+&run_make_with_options($makefile2, '', &get_logfile);
+$answer = "$make_name: 'final' is up to date.\n";
+&compare_output($answer, &get_logfile(1));
+
+unlink('source', 'final', 'intermediate');
+
+
+# TEST #8 -- test the "global" .SECONDARY, with .PHONY.
+
+touch('version2');
+run_make_test('
+.PHONY: version
+.SECONDARY:
+version2: version ; @echo GOOD
+all: version2',
+              'all', 'GOOD');
+
+unlink('version2');
+
+# TEST #9 -- Savannah bug #15919
+# The original fix for this bug caused a new bug, shown here.
+
+touch(qw(1.a 2.a));
+
+run_make_test('
+%.c : %.b ; cp $< $@
+%.b : %.a ; cp $< $@
+all : 1.c 2.c
+2.a: 1.c', '-rR -j',
+'cp 1.a 1.b
+cp 1.b 1.c
+cp 2.a 2.b
+cp 2.b 2.c
+rm 1.b 2.b');
+
+unlink(qw(1.a 2.a 1.c 2.c));
+
+# TEST #10 -- Savannah bug #15919
+touch('test.0');
+run_make_test('
+.SECONDARY : test.1 test.2 test.3
+
+test : test.4
+
+%.4 : %.int %.3 ; touch $@
+
+%.int : %.3 %.2 ; touch $@
+
+%.3 : | %.2 ; touch $@
+
+%.2 : %.1 ; touch $@
+
+%.1 : %.0 ; touch $@', '-rR -j 2',
+'touch test.1
+touch test.2
+touch test.3
+touch test.int
+touch test.4
+rm test.int');
+
+# After a touch of test.0 it should give the same output, except we don't need
+# to rebuild test.3 (order-only)
+sleep(1);
+touch('test.0');
+run_make_test(undef, '-rR -j 2',
+'touch test.1
+touch test.2
+touch test.int
+touch test.4
+rm test.int');
+
+# With both test.0 and test.3 updated it should still build everything except
+# test.3
+sleep(1);
+touch('test.0', 'test.3');
+run_make_test(undef, '-rR -j 2',
+'touch test.1
+touch test.2
+touch test.int
+touch test.4
+rm test.int');
+
+unlink(qw(test.0 test.1 test.2 test.3 test.4));
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/targets/SILENT b/src/kmk/tests/scripts/targets/SILENT
new file mode 100644
index 0000000..4bb0a0f
--- /dev/null
+++ b/src/kmk/tests/scripts/targets/SILENT
@@ -0,0 +1,42 @@
+#                                                                    -*-perl-*-
+
+$description = "The following tests the special target .SILENT.  By simply\n"
+              ."mentioning this as a target, it tells make not to print\n"
+              ."commands before executing them.";
+
+$details = "This test is the same as the clean test except that it should\n"
+          ."not echo its command before deleting the specified file.\n";
+
+$example = "EXAMPLE_FILE";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE ".SILENT : clean\n";
+print MAKEFILE "clean: \n";
+print MAKEFILE "\t$delete_command EXAMPLE_FILE\n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&touch($example);
+
+$answer = "";
+&run_make_with_options($makefile,"clean",&get_logfile,0);
+if (-f $example) {
+  $test_passed = 0;
+}
+&compare_output($answer,&get_logfile(1));
+
+1;
+
+
+
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/targets/clean b/src/kmk/tests/scripts/targets/clean
new file mode 100644
index 0000000..b32c976
--- /dev/null
+++ b/src/kmk/tests/scripts/targets/clean
@@ -0,0 +1,50 @@
+#                                                                    -*-perl-*-
+
+$description = "The following test creates a makefile to delete a \n"
+              ."file in the directory.  It tests to see if make will \n"
+              ."NOT execute the command unless the rule is given in \n"
+              ."the make command line.";
+
+$example = "EXAMPLE_FILE";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+print MAKEFILE "all: \n";
+print MAKEFILE "\t\@echo This makefile did not clean the dir... good\n";
+print MAKEFILE "clean: \n";
+print MAKEFILE "\t$delete_command EXAMPLE_FILE\n";
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+&touch($example);
+
+
+&run_make_with_options($makefile,"",&get_logfile,0);
+
+# Create the answer to what should be produced by this Makefile
+$answer = "This makefile did not clean the dir... good\n";
+
+&compare_output($answer,&get_logfile(1)) || &error ("abort");
+
+
+$answer = "$delete_command $example\n";
+&run_make_with_options($makefile,"clean",&get_logfile,0);
+if (-f $example) {
+  $test_passed = 0;
+}
+&compare_output($answer,&get_logfile(1)) || &error ("abort");
+
+1;
+
+
+
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/test_template b/src/kmk/tests/scripts/test_template
new file mode 100644
index 0000000..3fd3f95
--- /dev/null
+++ b/src/kmk/tests/scripts/test_template
@@ -0,0 +1,29 @@
+#                                                                    -*-perl-*-
+
+$description = "<FILL IN SHORT DESCRIPTION HERE>";
+$details = "<FILL IN DETAILS OF HOW YOU TEST WHAT YOU SAY YOU ARE TESTING>";
+
+# Run a make test.  See the documentation of run_make_test() in
+# run_make_tests.pl, but briefly the first argument is a string with the
+# contents of a makefile to be tested, the second is a string containing the
+# arguments to be passed to the make invocation, the third is a string
+# containing the expected output.  The fourth is the expected exit code for
+# make.  If not specified, it's assumed that the make program should succeed
+# (exit with 0).
+
+run_make_test('Your test makefile goes here',
+              'Arguments to pass to make go here',
+              'Expected output from the invocation goes here');
+
+# There are various special tokens, options, etc.  See the full documentation
+# in run_make_tests.pl.
+
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/variables/CURDIR b/src/kmk/tests/scripts/variables/CURDIR
new file mode 100644
index 0000000..ee7cacb
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/CURDIR
@@ -0,0 +1,20 @@
+#                                                                    -*-perl-*-
+
+$description = "This tests the CURDIR varaible.";
+
+$details = "Echo CURDIR both with and without -C.  Also ensure overrides work.";
+
+open(MAKEFILE,"> $makefile");
+print MAKEFILE "all: ; \@echo \$(CURDIR)\n";
+close(MAKEFILE);
+
+
+# TEST #1
+# -------
+
+&run_make_with_options($makefile,"",&get_logfile);
+$answer = "$pwd\n";
+&compare_output($answer,&get_logfile(1));
+
+
+1;
diff --git a/src/kmk/tests/scripts/variables/DEFAULT_GOAL b/src/kmk/tests/scripts/variables/DEFAULT_GOAL
new file mode 100644
index 0000000..8188ce7
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/DEFAULT_GOAL
@@ -0,0 +1,87 @@
+#                                                                    -*-perl-*-
+$description = "Test the .DEFAULT_GOAL special variable.";
+
+$details = "";
+
+
+# Test #1: basic logic.
+#
+run_make_test('
+# Basics.
+#
+foo: ; @:
+
+ifneq ($(.DEFAULT_GOAL),foo)
+$(error )
+endif
+
+# Reset to empty.
+#
+.DEFAULT_GOAL :=
+
+bar: ; @:
+
+ifneq ($(.DEFAULT_GOAL),bar)
+$(error )
+endif
+
+# Change to a different goal.
+#
+
+.DEFAULT_GOAL := baz
+
+baz: ; @echo $@
+',
+'',
+'baz');
+
+
+# Test #2: unknown goal.
+#
+run_make_test('
+.DEFAULT_GOAL = foo
+',
+'',
+"#MAKE#: *** No rule to make target 'foo'.  Stop.",
+512);
+
+
+# Test #3: more than one goal.
+#
+run_make_test('
+.DEFAULT_GOAL := foo bar
+',
+'',
+'#MAKE#: *** .DEFAULT_GOAL contains more than one target.  Stop.',
+512);
+
+
+# Test #4: Savannah bug #12226.
+#
+run_make_test('
+define rule
+foo: ; @echo $$@
+endef
+
+define make-rule
+$(eval $(rule))
+endef
+
+$(call make-rule)
+
+',
+'',
+'foo');
+
+# TEST #5: .DEFAULT_GOAL containing just whitespace (Savannah bug #25697)
+
+run_make_test('
+N =
+.DEFAULT_GOAL = $N  $N  # Just whitespace
+
+foo: ; @echo "boo"
+',
+              '', "#MAKE#: *** No targets.  Stop.\n", 512);
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/variables/GNUMAKEFLAGS b/src/kmk/tests/scripts/variables/GNUMAKEFLAGS
new file mode 100644
index 0000000..6e50794
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/GNUMAKEFLAGS
@@ -0,0 +1,42 @@
+#                                                                    -*-perl-*-
+
+$description = "Test proper behavior of GNUMAKEFLAGS";
+
+# Accept flags from GNUMAKEFLAGS as well as MAKEFLAGS
+# Results always go in MAKEFLAGS
+
+$extraENV{'GNUMAKEFLAGS'} = '-e -r -R';
+
+run_make_test(q!
+all: ; @echo $(MAKEFLAGS)
+!,
+              '', 'erR');
+
+# Long arguments mean everything is prefixed with "-"
+
+$extraENV{'GNUMAKEFLAGS'} = '--no-print-directory -e -r -R --trace';
+
+run_make_test(q!
+all: ; @echo $(MAKEFLAGS)
+!,
+              '', "#MAKEFILE#:2: target 'all' does not exist
+echo erR --trace --no-print-directory
+erR --trace --no-print-directory");
+
+# Verify that re-exec / recursion doesn't duplicate flags from GNUMAKEFLAGS
+
+unlink('x.mk');
+
+$extraENV{GNUMAKEFLAGS} = '-Itst/bad';
+
+run_make_test(q!
+recurse: ; @echo $@; echo MAKEFLAGS = $$MAKEFLAGS; echo GNUMAKEFLAGS = $$GNUMAKEFLAGS; #MAKEPATH# -f #MAKEFILE# all
+all: ; @echo $@; echo MAKEFLAGS = $$MAKEFLAGS; echo GNUMAKEFLAGS = $$GNUMAKEFLAGS
+-include x.mk
+x.mk: ; @echo $@; echo MAKEFLAGS = $$MAKEFLAGS; echo GNUMAKEFLAGS = $$GNUMAKEFLAGS; echo > $@
+!,
+              "", "x.mk\nMAKEFLAGS = -Itst/bad\nGNUMAKEFLAGS =\nrecurse\nMAKEFLAGS = -Itst/bad\nGNUMAKEFLAGS =\n#MAKE#[1]: Entering directory '#PWD#'\nall\nMAKEFLAGS = w -Itst/bad\nGNUMAKEFLAGS =\n#MAKE#[1]: Leaving directory '#PWD#'\n");
+
+unlink('x.mk');
+
+1;
diff --git a/src/kmk/tests/scripts/variables/INCLUDE_DIRS b/src/kmk/tests/scripts/variables/INCLUDE_DIRS
new file mode 100644
index 0000000..c9662e9
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/INCLUDE_DIRS
@@ -0,0 +1,46 @@
+#                                                                    -*-perl-*-
+$description = "Test the .INCLUDE_DIRS special variable.";
+
+$details = "";
+
+use Cwd;
+
+$dir = cwd;
+$dir =~ s,.*/([^/]+)$,../$1,;
+
+# Test #1: The content of .INCLUDE_DIRS depends on the platform for which
+#          make was built. What we know for sure is that it shouldn't be
+#          empty.
+#
+run_make_test('
+ifeq ($(.INCLUDE_DIRS),)
+$(warning .INCLUDE_DIRS is empty)
+endif
+
+.PHONY: all
+all:;@:
+',
+'',
+'');
+
+
+# Test #2: Make sure -I paths end up in .INCLUDE_DIRS.
+#
+run_make_test('
+ifeq ($(dir),)
+$(warning dir is empty)
+endif
+
+ifeq ($(filter $(dir),$(.INCLUDE_DIRS)),)
+$(warning .INCLUDE_DIRS does not contain $(dir))
+endif
+
+.PHONY: all
+all:;@:
+',
+"-I$dir dir=$dir",
+'');
+
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/scripts/variables/LIBPATTERNS b/src/kmk/tests/scripts/variables/LIBPATTERNS
new file mode 100644
index 0000000..9182954
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/LIBPATTERNS
@@ -0,0 +1,38 @@
+#                                                                    -*-perl-*-
+
+$description = "Test .LIBPATTERNS special variable.";
+
+$details = "";
+
+# TEST 0: basics
+
+touch('mtest_foo.a');
+
+run_make_test('
+.LIBPATTERNS = mtest_%.a
+all: -lfoo ; @echo "build $@ from $<"
+',
+              '', "build all from mtest_foo.a\n");
+
+# TEST 1: Handle elements that are not patterns.
+
+run_make_test('
+.LIBPATTERNS = mtest_foo.a mtest_%.a
+all: -lfoo ; @echo "build $@ from $<"
+',
+              '', "#MAKE#: .LIBPATTERNS element 'mtest_foo.a' is not a pattern
+build all from mtest_foo.a\n");
+
+# TEST 2: target-specific override
+
+# Uncomment this when we add support, see Savannah bug #25703
+# run_make_test('
+# .LIBPATTERNS = mbad_%.a
+# all: .LIBPATTERNS += mtest_%.a
+# all: -lfoo ; @echo "build $@ from $<"
+# ',
+#               '', "build all from mtest_foo.a\n");
+
+unlink('mtest_foo.a');
+
+1;
diff --git a/src/kmk/tests/scripts/variables/MAKE b/src/kmk/tests/scripts/variables/MAKE
new file mode 100644
index 0000000..dc62160
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/MAKE
@@ -0,0 +1,24 @@
+#								     -*-perl-*-
+
+$description = "Test proper behavior of the MAKE variable";
+
+$details = "DETAILS";
+
+run_make_test(q!
+TMP  := $(MAKE)
+MAKE := $(subst X=$(X),,$(MAKE))
+all:
+	@echo $(TMP)
+	$(MAKE) -f #MAKEFILE# foo
+
+foo:
+	@echo $(MAKE)
+!,
+              '',
+              "#MAKEPATH#\n#MAKEPATH# -f #MAKEFILE# foo\n"
+              . "#MAKE#[1]: Entering directory '#PWD#'\n"
+              . "#MAKEPATH#\n#MAKE#[1]: Leaving directory '#PWD#'\n");
+
+rmfiles("foo");
+
+1;
diff --git a/src/kmk/tests/scripts/variables/MAKECMDGOALS b/src/kmk/tests/scripts/variables/MAKECMDGOALS
new file mode 100644
index 0000000..879283b
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/MAKECMDGOALS
@@ -0,0 +1,52 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the MAKECMDGOALS variable.";
+
+$details = "\
+We construct a makefile with various targets, all of which print out
+\$(MAKECMDGOALS), then call it different ways.";
+
+open(MAKEFILE,"> $makefile");
+print MAKEFILE "\
+.DEFAULT all:
+	\@echo \$(MAKECMDGOALS)
+";
+close(MAKEFILE);
+
+# TEST #1
+
+&run_make_with_options($makefile,
+                       "",
+                       &get_logfile,
+                       0);
+$answer = "\n";
+&compare_output($answer,&get_logfile(1));
+
+# TEST #2
+
+&run_make_with_options($makefile,
+                       "all",
+                       &get_logfile,
+                       0);
+$answer = "all\n";
+&compare_output($answer,&get_logfile(1));
+
+
+# TEST #3
+
+&run_make_with_options($makefile,
+                       "foo bar baz yaz",
+                       &get_logfile,
+                       0);
+$answer = "foo bar baz yaz\nfoo bar baz yaz\nfoo bar baz yaz\nfoo bar baz yaz\n";
+&compare_output($answer,&get_logfile(1));
+
+
+# This tells the test driver that the perl test script executed properly.
+1;
+
+
+
+
+
+
diff --git a/src/kmk/tests/scripts/variables/MAKEFILES b/src/kmk/tests/scripts/variables/MAKEFILES
new file mode 100644
index 0000000..b23da8e
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/MAKEFILES
@@ -0,0 +1,53 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the MAKEFILES variable.";
+
+$makefile2 = &get_tmpfile;
+$makefile3 = &get_tmpfile;
+
+open(MAKEFILE,"> $makefile");
+print MAKEFILE 'all: ; @echo DEFAULT RULE: M2=$(M2) M3=$(M3)', "\n";
+close(MAKEFILE);
+
+
+open(MAKEFILE,"> $makefile2");
+print MAKEFILE <<EOF;
+M2 = m2
+NDEF: ; \@echo RULE FROM MAKEFILE 2
+EOF
+close(MAKEFILE);
+
+
+open(MAKEFILE,"> $makefile3");
+print MAKEFILE <<EOF;
+M3 = m3
+NDEF3: ; \@echo RULE FROM MAKEFILE 3
+EOF
+close(MAKEFILE);
+
+
+&run_make_with_options($makefile, "MAKEFILES='$makefile2 $makefile3'",
+                       &get_logfile);
+$answer = "DEFAULT RULE: M2=m2 M3=m3\n";
+&compare_output($answer,&get_logfile(1));
+
+# TEST 2: Verify that included makefiles don't set the default goal.
+# See Savannah bug #13401.
+
+create_file('xx-inc.mk', '
+include_goal: ; @echo $@
+include xx-ind.mk
+');
+
+create_file('xx-ind.mk', '
+indirect_goal: ; @echo $@
+');
+
+run_make_test(q!
+top: ; @echo $@
+!,
+              'MAKEFILES=xx-inc.mk', "top\n");
+
+unlink(qw(xx-inc.mk xx-ind.mk));
+
+1;
diff --git a/src/kmk/tests/scripts/variables/MAKEFILE_LIST b/src/kmk/tests/scripts/variables/MAKEFILE_LIST
new file mode 100644
index 0000000..076e42d
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/MAKEFILE_LIST
@@ -0,0 +1,30 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the MAKEFILE_LIST variable.";
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE,"> $makefile");
+print MAKEFILE <<EOF;
+m1 := \$(MAKEFILE_LIST)
+include $makefile2
+m3 := \$(MAKEFILE_LIST)
+
+all:
+\t\@echo \$(m1)
+\t\@echo \$(m2)
+\t\@echo \$(m3)
+EOF
+close(MAKEFILE);
+
+
+open(MAKEFILE,"> $makefile2");
+print MAKEFILE "m2 := \$(MAKEFILE_LIST)\n";
+close(MAKEFILE);
+
+
+&run_make_with_options($makefile, "", &get_logfile);
+$answer = "$makefile\n$makefile $makefile2\n$makefile $makefile2\n";
+&compare_output($answer,&get_logfile(1));
+
+1;
diff --git a/src/kmk/tests/scripts/variables/MAKEFLAGS b/src/kmk/tests/scripts/variables/MAKEFLAGS
new file mode 100644
index 0000000..0fac74a
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/MAKEFLAGS
@@ -0,0 +1,45 @@
+#                                                                    -*-perl-*-
+
+$description = "Test proper behavior of MAKEFLAGS";
+
+$details = "DETAILS";
+
+# Normal flags aren't prefixed with "-"
+run_make_test(q!
+all: ; @echo $(MAKEFLAGS)
+!,
+              '-e -r -R', 'erR');
+
+# Long arguments mean everything is prefixed with "-"
+run_make_test(q!
+all: ; @echo $(MAKEFLAGS)
+!,
+              '--no-print-directory -e -r -R --trace', "#MAKEFILE#:2: target 'all' does not exist
+echo erR --trace --no-print-directory
+erR --trace --no-print-directory");
+
+
+# Recursive invocations of make should accumulate MAKEFLAGS values.
+# Savannah bug #2216
+run_make_test(q!
+MSG = Fails
+all:
+	@echo '$@: MAKEFLAGS=$(MAKEFLAGS)'
+	@MSG=Works $(MAKE) -e -f #MAKEFILE# jump
+jump:
+	@echo '$@ $(MSG): MAKEFLAGS=$(MAKEFLAGS)'
+	@$(MAKE) -f #MAKEFILE# print
+print:
+	@echo '$@ $(MSG): MAKEFLAGS=$(MAKEFLAGS)'
+.PHONY: all jump print
+!,
+                  '--no-print-directory',
+                  'all: MAKEFLAGS= --no-print-directory
+jump Works: MAKEFLAGS=e --no-print-directory
+print Works: MAKEFLAGS=e --no-print-directory');
+
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/variables/MAKELEVEL b/src/kmk/tests/scripts/variables/MAKELEVEL
new file mode 100644
index 0000000..0db3a68
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/MAKELEVEL
@@ -0,0 +1,45 @@
+#                                                                    -*-perl-*-
+
+$description = "The following test creates a makefile to test
+makelevels in Make. It prints \$(MAKELEVEL) and then
+prints the environment variable MAKELEVEL";
+
+open(MAKEFILE,"> $makefile");
+
+# The Contents of the MAKEFILE ...
+
+if (!$is_kmk) {
+  print MAKEFILE <<EOF;
+all:
+\t\@echo MAKELEVEL is \$(MAKELEVEL)
+\techo \$\$MAKELEVEL
+EOF
+} else {
+  print MAKEFILE <<EOF;
+all:
+\t\@echo KMK_LEVEL is \$(KMK_LEVEL)
+\techo \$\$KMK_LEVEL
+EOF
+}
+
+# END of Contents of MAKEFILE
+
+close(MAKEFILE);
+
+# RUN MAKE
+
+&run_make_with_options($makefile,"",&get_logfile);
+
+# SET ANSWER
+
+if (!$is_kmk) {
+  $answer = "MAKELEVEL is 0\necho \$MAKELEVEL\n1\n";
+} else {
+  $answer = "KMK_LEVEL is 0\necho \$KMK_LEVEL\n1\n";
+}
+
+# COMPARE RESULTS
+
+&compare_output($answer,&get_logfile(1));
+
+1;
diff --git a/src/kmk/tests/scripts/variables/MAKE_RESTARTS b/src/kmk/tests/scripts/variables/MAKE_RESTARTS
new file mode 100644
index 0000000..01bf55e
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/MAKE_RESTARTS
@@ -0,0 +1,61 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the MAKE_RESTARTS variable.";
+
+# Test basic capability
+
+run_make_test('
+all: ; @:
+$(info MAKE_RESTARTS=$(MAKE_RESTARTS))
+include foo.x
+foo.x: ; @touch $@
+',
+              '', 'MAKE_RESTARTS=
+MAKE_RESTARTS=1');
+
+rmfiles('foo.x');
+
+# Test multiple restarts
+
+run_make_test('
+all: ; @:
+$(info MAKE_RESTARTS=$(MAKE_RESTARTS))
+include foo.x
+foo.x: ; @echo "include bar.x" > $@
+bar.x: ; @touch $@
+',
+              '', 'MAKE_RESTARTS=
+MAKE_RESTARTS=1
+MAKE_RESTARTS=2');
+
+rmfiles('foo.x', 'bar.x');
+
+# Test multiple restarts and make sure the variable is cleaned up
+
+run_make_test('
+recurse:
+	@echo recurse MAKE_RESTARTS=$$MAKE_RESTARTS
+	@$(MAKE) -f #MAKEFILE# all
+all:
+	@echo all MAKE_RESTARTS=$$MAKE_RESTARTS
+$(info MAKE_RESTARTS=$(MAKE_RESTARTS))
+include foo.x
+foo.x: ; @echo "include bar.x" > $@
+bar.x: ; @touch $@
+',
+              '', "MAKE_RESTARTS=
+MAKE_RESTARTS=1
+MAKE_RESTARTS=2
+recurse MAKE_RESTARTS=
+#MAKE#[1]: Entering directory '#PWD#'
+MAKE_RESTARTS=
+all MAKE_RESTARTS=
+#MAKE#[1]: Leaving directory '#PWD#'");
+
+rmfiles('foo.x', 'bar.x');
+
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/variables/MFILE_LIST b/src/kmk/tests/scripts/variables/MFILE_LIST
new file mode 100644
index 0000000..076e42d
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/MFILE_LIST
@@ -0,0 +1,30 @@
+#                                                                    -*-perl-*-
+
+$description = "Test the MAKEFILE_LIST variable.";
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE,"> $makefile");
+print MAKEFILE <<EOF;
+m1 := \$(MAKEFILE_LIST)
+include $makefile2
+m3 := \$(MAKEFILE_LIST)
+
+all:
+\t\@echo \$(m1)
+\t\@echo \$(m2)
+\t\@echo \$(m3)
+EOF
+close(MAKEFILE);
+
+
+open(MAKEFILE,"> $makefile2");
+print MAKEFILE "m2 := \$(MAKEFILE_LIST)\n";
+close(MAKEFILE);
+
+
+&run_make_with_options($makefile, "", &get_logfile);
+$answer = "$makefile\n$makefile $makefile2\n$makefile $makefile2\n";
+&compare_output($answer,&get_logfile(1));
+
+1;
diff --git a/src/kmk/tests/scripts/variables/SHELL b/src/kmk/tests/scripts/variables/SHELL
new file mode 100644
index 0000000..9d56796
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/SHELL
@@ -0,0 +1,103 @@
+#                                                                    -*-perl-*-
+
+$description = "Test proper handling of SHELL.";
+
+# Find the default value when SHELL is not set.  On UNIX it will be /bin/sh,
+# but on other platforms who knows?
+resetENV();
+delete $ENV{SHELL};
+$mshell = `echo 'all:;\@echo \$(SHELL)' | $make_path -f-`;
+chop $mshell;
+
+# According to POSIX, the value of SHELL in the environment has no impact on
+# the value in the makefile.
+# Note %extraENV takes precedence over the default value for the shell.
+
+$extraENV{SHELL} = '/dev/null';
+run_make_test('all:;@echo "$(SHELL)"', '', $mshell);
+
+# According to POSIX, any value of SHELL set in the makefile should _NOT_ be
+# exported to the subshell!  I wanted to set SHELL to be $^X (perl) in the
+# makefile, but make runs $(SHELL) -c 'commandline' and that doesn't work at
+# all when $(SHELL) is perl :-/.  So, we just add an extra initial /./ which
+# works well on UNIX and seems to work OK on at least some non-UNIX systems.
+
+$extraENV{SHELL} = $mshell;
+
+run_make_test("SHELL := /./$mshell\n".'
+all:;@echo "$(SHELL) $$SHELL"
+', '', "/./$mshell $mshell");
+
+# As a GNU make extension, if make's SHELL variable is explicitly exported,
+# then we really _DO_ export it.
+
+$extraENV{SHELL} = $mshell;
+
+run_make_test("export SHELL := /./$mshell\n".'
+all:;@echo "$(SHELL) $$SHELL"
+', '', "/./$mshell /./$mshell");
+
+
+# Test out setting of SHELL, both exported and not, as a target-specific
+# variable.
+
+$extraENV{SHELL} = $mshell;
+
+run_make_test("all: SHELL := /./$mshell\n".'
+all:;@echo "$(SHELL) $$SHELL"
+', '', "/./$mshell $mshell");
+
+$extraENV{SHELL} = $mshell;
+
+# bird: This was wrong at some point, see Savannah bug #24655. Was first fixed in kBuild.
+run_make_test("
+SHELL := /././$mshell
+one: two
+two: export SHELL := /./$mshell\n".'
+one two:;@echo "$@: $(SHELL) $$SHELL"
+', '', "two: /./$mshell /./$mshell\none: /././$mshell $mshell\n");
+
+# Test .SHELLFLAGS
+
+# We don't know the output here: on Solaris for example, every line printed
+# by the shell in -x mode has a trailing space (!!)
+my $script = 'true; true';
+my $flags = '-xc';
+my $out = `/bin/sh $flags '$script' 2>&1`;
+
+run_make_test(qq!
+.SHELLFLAGS = $flags
+all: ; \@$script
+!,
+              '', $out);
+
+# Do it again but add spaces to SHELLFLAGS
+
+# Some shells (*shakes fist at Solaris*) cannot handle multiple flags in
+# separate arguments.
+my $t = `/bin/sh -e -c true 2>/dev/null`;
+my $multi_ok = $? == 0;
+
+if ($multi_ok) {
+    $flags = '-x -c';
+    run_make_test(qq!
+.SHELLFLAGS = $flags
+all: ; \@$script
+!,
+              '', $out);
+}
+
+# We can't just use "false" because on different systems it provides a
+# different exit code--once again Solaris: false exits with 255 not 1
+$script = 'true; false; true';
+$flags = '-xec';
+$out = `/bin/sh $flags '$script' 2>&1`;
+my $err = $? >> 8;
+
+run_make_test(qq!
+.SHELLFLAGS = $flags
+all: ; \@$script
+!,
+              '', "$out#MAKE#: *** [#MAKEFILE#:3: all] Error $err\n", 512);
+
+1;
diff --git a/src/kmk/tests/scripts/variables/automatic b/src/kmk/tests/scripts/variables/automatic
new file mode 100644
index 0000000..2304fa0
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/automatic
@@ -0,0 +1,122 @@
+#                                                                    -*-perl-*-
+
+$description = "Test automatic variable setting.";
+
+$details = "";
+
+use Cwd;
+
+$dir = cwd;
+$dir =~ s,.*/([^/]+)$,../$1,;
+
+open(MAKEFILE, "> $makefile");
+print MAKEFILE "dir = $dir\n";
+print MAKEFILE <<'EOF';
+.SUFFIXES:
+.SUFFIXES: .x .y .z
+$(dir)/foo.x : baz.z $(dir)/bar.y baz.z
+	@echo '$$@ = $@, $$(@D) = $(@D), $$(@F) = $(@F)'
+	@echo '$$* = $*, $$(*D) = $(*D), $$(*F) = $(*F)'
+	@echo '$$< = $<, $$(<D) = $(<D), $$(<F) = $(<F)'
+	@echo '$$^ = $^, $$(^D) = $(^D), $$(^F) = $(^F)'
+	@echo '$$+ = $+, $$(+D) = $(+D), $$(+F) = $(+F)'
+	@echo '$$? = $?, $$(?D) = $(?D), $$(?F) = $(?F)'
+	touch $@
+
+$(dir)/bar.y baz.z : ; touch $@
+EOF
+close(MAKEFILE);
+
+# TEST #0 -- simple test
+# -------
+
+# Touch these into the past
+&utouch(-10, qw(foo.x baz.z));
+
+&run_make_with_options($makefile, "", &get_logfile);
+$answer = "touch $dir/bar.y
+\$\@ = $dir/foo.x, \$(\@D) = $dir, \$(\@F) = foo.x
+\$* = $dir/foo, \$(*D) = $dir, \$(*F) = foo
+\$< = baz.z, \$(<D) = ., \$(<F) = baz.z
+\$^ = baz.z $dir/bar.y, \$(^D) = . $dir, \$(^F) = baz.z bar.y
+\$+ = baz.z $dir/bar.y baz.z, \$(+D) = . $dir ., \$(+F) = baz.z bar.y baz.z
+\$? = $dir/bar.y, \$(?D) = $dir, \$(?F) = bar.y
+touch $dir/foo.x\n";
+&compare_output($answer, &get_logfile(1));
+
+unlink(qw(foo.x bar.y baz.z));
+
+# TEST #1 -- test the SysV emulation of $$@ etc.
+# -------
+
+$makefile2 = &get_tmpfile;
+
+open(MAKEFILE, "> $makefile2");
+print MAKEFILE "dir = $dir\n";
+print MAKEFILE <<'EOF';
+.SECONDEXPANSION:
+.SUFFIXES:
+.DEFAULT: ; @echo '$@'
+
+$(dir)/foo $(dir)/bar: $@.x $$@.x $$$@.x $$$$@.x $$(@D).x $$(@F).x
+
+$(dir)/x.z $(dir)/y.z: $(dir)/%.z : $@.% $$@.% $$$@.% $$$$@.% $$(@D).% $$(@F).%
+
+$(dir)/biz: $$(@).x $${@}.x $${@D}.x $${@F}.x
+EOF
+
+close(MAKEFILE);
+
+&run_make_with_options($makefile2, "-j1 $dir/foo $dir/bar", &get_logfile);
+$answer = ".x\n$dir/foo.x\nx\n\$@.x\n$dir.x\nfoo.x\n$dir/bar.x\nbar.x\n";
+&compare_output($answer, &get_logfile(1));
+
+&run_make_with_options($makefile2, "-j1 $dir/x.z $dir/y.z", &get_logfile);
+$answer = ".x\n$dir/x.z.x\nx\n\$@.x\n$dir.x\nx.z.x\n.y\n$dir/y.z.y\n\y\n\$@.y\n$dir.y\ny.z.y\n";
+&compare_output($answer, &get_logfile(1));
+
+&run_make_with_options($makefile2, "-j1 $dir/biz", &get_logfile);
+$answer = "$dir/biz.x\n$dir.x\nbiz.x\n";
+&compare_output($answer, &get_logfile(1));
+
+# TEST #2 -- test for Savannah bug #12320.
+#
+run_make_test('
+.SUFFIXES: .b .src
+
+mbr.b: mbr.src
+	@echo $*
+
+mbr.src: ; @:',
+              '',
+              'mbr');
+
+# TEST #3 -- test for Savannah bug #8154
+# Make sure that nonexistent prerequisites are listed in $?, since they are
+# considered reasons for the target to be rebuilt.
+#
+# See also Savannah bugs #16002 and #16051.
+
+touch('foo');
+
+run_make_test('
+foo: bar ; @echo "\$$? = $?"
+bar: ;',
+              '',
+              '$? = bar');
+
+unlink('foo');
+
+# TEST #4: ensure prereq ordering is correct when the commmand target has none
+# See Savannah bug #21198
+
+run_make_test('
+all : A B
+all : ; @echo $@ -- $^ -- $<
+all : C D
+all : E F
+A B C D E F G H : ; @:
+',
+              '', "all -- A B C D E F -- A\n");
+
+1;
diff --git a/src/kmk/tests/scripts/variables/define b/src/kmk/tests/scripts/variables/define
new file mode 100644
index 0000000..7324cbc
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/define
@@ -0,0 +1,282 @@
+#                                                                    -*-perl-*-
+
+$description = "Test define/endef variable assignments.";
+
+$details = "";
+
+# TEST 0: old-style basic define/endef
+
+run_make_test('
+define multi
+@echo hi
+echo there
+endef
+
+all: ; $(multi)
+',
+              '', "hi\necho there\nthere\n");
+
+# TEST 1: Various new-style define/endef
+
+run_make_test('
+FOO = foo
+
+define multi =
+echo hi
+@echo $(FOO)
+endef # this is the end
+
+define simple :=
+@echo $(FOO)
+endef
+
+define posix ::=
+@echo $(FOO)
+endef
+
+append = @echo a
+
+define append +=
+
+@echo b
+endef
+
+define cond ?= # this is a conditional
+@echo first
+endef
+
+define cond ?=
+@echo second
+endef
+
+FOO = there
+
+all: ; $(multi)
+	$(simple)
+	$(posix)
+	$(append)
+	$(cond)
+',
+              '', "echo hi\nhi\nthere\nfoo\nfoo\na\nb\nfirst\n");
+
+# TEST 1a: Various new-style define/endef, with no spaces
+
+run_make_test('
+FOO = foo
+
+define multi=
+echo hi
+@echo $(FOO)
+endef # this is the end
+
+define simple:=
+@echo $(FOO)
+endef
+
+define posix::=
+@echo $(FOO)
+endef
+
+append = @echo a
+
+define append+=
+
+@echo b
+endef
+
+define cond?= # this is a conditional
+@echo first
+endef
+
+define cond?=
+@echo second
+endef
+
+FOO = there
+
+all: ; $(multi)
+	$(simple)
+	$(posix)
+	$(append)
+	$(cond)
+',
+              '', "echo hi\nhi\nthere\nfoo\nfoo\na\nb\nfirst\n");
+
+# TEST 2: define in true section of conditional (containing conditional)
+
+run_make_test('
+FOO = foo
+NAME = def
+def =
+ifdef BOGUS
+ define  $(subst e,e,$(NAME))     =
+  ifeq (1,1)
+   FOO = bar
+  endif
+ endef
+endif
+
+$(eval $(def))
+all: ; @echo $(FOO)
+',
+              'BOGUS=1', "bar\n");
+
+# TEST 3: define in false section of conditional (containing conditional)
+
+run_make_test(undef, '', "foo\n");
+
+# TEST 4: nested define (supported?)
+
+run_make_test('
+define outer
+ define inner
+  A = B
+ endef
+endef
+
+$(eval $(outer))
+
+outer: ; @echo $(inner)
+',
+              '', "A = B\n");
+
+# TEST 5: NEGATIVE: Missing variable name
+
+run_make_test('
+NAME =
+define $(NAME)  =
+ouch
+endef
+all: ; @echo ouch
+',
+              '', "#MAKEFILE#:3: *** empty variable name.  Stop.\n", 512);
+
+# TEST 6: NEGATIVE: extra text after define
+
+run_make_test('
+NAME =
+define NAME = $(NAME)
+ouch
+endef
+all: ; @echo ok
+',
+              '', "#MAKEFILE#:3: extraneous text after 'define' directive\nok\n");
+
+# TEST 7: NEGATIVE: extra text after endef
+
+run_make_test('
+NAME =
+define NAME =
+ouch
+endef $(NAME)
+all: ; @echo ok
+',
+              '', "#MAKEFILE#:5: extraneous text after 'endef' directive\nok\n");
+
+# TEST 8: NEGATIVE: missing endef
+
+run_make_test('
+NAME =
+all: ; @echo ok
+define NAME =
+ouch
+endef$(NAME)
+',
+              '', "#MAKEFILE#:4: *** missing 'endef', unterminated 'define'.  Stop.\n", 512);
+
+# -------------------------
+# Make sure that prefix characters apply properly to define/endef values.
+#
+# There's a bit of oddness here if you try to use a variable to hold the
+# prefix character for a define.  Even though something like this:
+#
+#       define foo
+#       echo bar
+#       endef
+#
+#       all: ; $(V)$(foo)
+#
+# (where V=@) can be seen by the user to be obviously different than this:
+#
+#       define foo
+#       $(V)echo bar
+#       endef
+#
+#       all: ; $(foo)
+#
+# and the user thinks it should behave the same as when the "@" is literal
+# instead of in a variable, that can't happen because by the time make
+# expands the variables for the command line and sees it begins with a "@" it
+# can't know anymore whether the prefix character came before the variable
+# reference or was included in the first line of the variable reference.
+
+# TEST #5
+# -------
+
+run_make_test('
+define FOO
+$(V1)echo hello
+$(V2)echo world
+endef
+all: ; @$(FOO)
+', '', 'hello
+world');
+
+# TEST #6
+# -------
+
+run_make_test(undef, 'V1=@ V2=@', 'hello
+world');
+
+# TEST #7
+# -------
+
+run_make_test('
+define FOO
+$(V1)echo hello
+$(V2)echo world
+endef
+all: ; $(FOO)
+', 'V1=@', 'hello
+echo world
+world');
+
+# TEST #8
+# -------
+
+run_make_test(undef, 'V2=@', 'echo hello
+hello
+world');
+
+# TEST #9
+# -------
+
+run_make_test(undef, 'V1=@ V2=@', 'hello
+world');
+
+# TEST #10
+# -------
+# Test the basics; a "@" internally to the variable applies to only one line.
+# A "@" before the variable applies to the entire variable.
+
+run_make_test('
+define FOO
+@echo hello
+echo world
+endef
+define BAR
+echo hello
+echo world
+endef
+
+all: foo bar
+foo: ; $(FOO)
+bar: ; @$(BAR)
+', '', 'hello
+echo world
+world
+hello
+world
+');
+
+1;
diff --git a/src/kmk/tests/scripts/variables/flavors b/src/kmk/tests/scripts/variables/flavors
new file mode 100644
index 0000000..ba133ea
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/flavors
@@ -0,0 +1,96 @@
+#                                                                    -*-perl-*-
+
+$description = "Test various flavors of make variable setting.";
+
+$details = "";
+
+# TEST 0: Recursive
+
+run_make_test('
+ugh = Goodbye
+foo = $(bar)
+bar = ${ugh}
+ugh = Hello
+all: ; @echo $(foo)
+',
+              '', "Hello\n");
+
+# TEST 1: Simple
+
+run_make_test('
+bar = Goodbye
+foo := $(bar)
+bar = ${ugh}
+ugh = Hello
+all: ; @echo $(foo)
+',
+              '', "Goodbye\n");
+
+# TEST 2: Append to recursive
+
+run_make_test('
+foo = Hello
+ugh = Goodbye
+foo += $(bar)
+bar = ${ugh}
+ugh = Hello
+all: ; @echo $(foo)
+',
+              '', "Hello Hello\n");
+
+# TEST 3: Append to simple
+
+run_make_test('
+foo := Hello
+ugh = Goodbye
+bar = ${ugh}
+foo += $(bar)
+ugh = Hello
+all: ; @echo $(foo)
+',
+              '', "Hello Goodbye\n");
+
+# TEST 4: Conditional pre-set
+
+run_make_test('
+foo = Hello
+ugh = Goodbye
+bar = ${ugh}
+foo ?= $(bar)
+ugh = Hello
+all: ; @echo $(foo)
+',
+              '', "Hello\n");
+
+# TEST 5: Conditional unset
+
+run_make_test('
+ugh = Goodbye
+bar = ${ugh}
+foo ?= $(bar)
+ugh = Hello
+all: ; @echo $(foo)
+',
+              '', "Hello\n");
+
+# TEST 6: Simple using POSIX syntax
+run_make_test('
+bar = Goodbye
+foo ::= $(bar)
+bar = ${ugh}
+ugh = Hello
+all: ; @echo $(foo)
+',
+              '', "Goodbye\n");
+
+# TEST 7: POSIX syntax no spaces
+run_make_test('
+bar = Goodbye
+foo::=$(bar)
+bar = ${ugh}
+ugh = Hello
+all: ; @echo $(foo)
+',
+              '', "Goodbye\n");
+
+1;
diff --git a/src/kmk/tests/scripts/variables/must_make b/src/kmk/tests/scripts/variables/must_make
new file mode 100644
index 0000000..83a8275
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/must_make
@@ -0,0 +1,81 @@
+# $Id: must_make 2413 2010-09-11 17:43:04Z bird $                                        -*-perl-*-
+## @file
+# .MUST_MAKE target variable.
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+$description = "Tests the .MUST_MAKE target variable";
+
+$details = "The .MUST_MAKE target variable is expanded when make is deciding
+whether a file needs to be made or not.  If it returns a non-empty string,
+when stripped, it will force the file to be made.  If it returns an empty
+string GNU make decides the normal way.  Note that .MUST_MAKE does NOT have
+to be expanded if make already knows the file needs building.  Also, note
+that for multi target rules it may be invoked for each file.";
+
+if ($is_kmk) {
+
+   # TEST #0 - check to see that it gets called and is made.
+   # -------------------------------------------------------
+   &touch('foobar.1');
+   run_make_test('
+
+foobar.1: .MUST_MAKE = $(info mustmake:{@=$@,<=$<})FORCE
+foobar.1: ;touch $@
+',
+'',
+'mustmake:{@=foobar.1,<=}
+touch foobar.1'
+);
+   unlink('foobar.1');
+
+   # TEST #1 - check to see that it gets called and isn't made.
+   # ----------------------------------------------------------
+   &touch('foobar.1');
+   run_make_test('
+
+foobar.1: .MUST_MAKE = $(info mustmake:{@=$@,<=$<})
+foobar.1: ;touch $@
+',
+'',
+'mustmake:{@=foobar.1,<=}
+#MAKE#: `foobar.1\' is up to date.'
+);
+   unlink('foobar.1');
+
+   # TEST #2 - check to see that it doesn't get called unnecessary.
+   # --------------------------------------------------------------
+   run_make_test('
+foobar.1: .MUST_MAKE = $(info mustmake:{@=$@,<=$})FORCE
+foobar.1: ;@echo making $@
+',
+'',
+'making foobar.1');
+
+}
+
+
+
+# Indicate that we're done.
+1;
+
+
diff --git a/src/kmk/tests/scripts/variables/negative b/src/kmk/tests/scripts/variables/negative
new file mode 100644
index 0000000..16a72b8
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/negative
@@ -0,0 +1,46 @@
+#                                                                    -*-perl-*-
+
+$description = "Run some negative tests (things that should fail).";
+
+# TEST #0
+# Check that non-terminated variable references are detected (and
+# reported using the best filename/lineno info
+run_make_test('
+foo = bar
+x = $(foo
+y = $x
+
+all: ; @echo $y
+',
+              '', '#MAKEFILE#:3: *** unterminated variable reference.  Stop.',
+              512);
+
+# TEST #1
+# Bogus variable value passed on the command line.
+run_make_test(undef,
+              'x=\$\(other',
+              '#MAKEFILE#:4: *** unterminated variable reference.  Stop.',
+              512);
+
+# TEST #2
+# Again, but this time while reading the makefile.
+run_make_test('
+foo = bar
+x = $(foo
+y = $x
+
+z := $y
+
+all: ; @echo $y
+',
+              '', '#MAKEFILE#:3: *** unterminated variable reference.  Stop.',
+              512);
+
+# TEST #3
+# Bogus variable value passed on the command line.
+run_make_test(undef,
+              'x=\$\(other',
+              '#MAKEFILE#:4: *** unterminated variable reference.  Stop.',
+              512);
+
+1;
diff --git a/src/kmk/tests/scripts/variables/private b/src/kmk/tests/scripts/variables/private
new file mode 100644
index 0000000..8967ffb
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/private
@@ -0,0 +1,122 @@
+#                                                                    -*-perl-*-
+
+$description = "Test 'private' variables.";
+
+$details = "";
+
+# 1: Simple verification that private variables are not inherited
+&run_make_test('
+a:
+F = g
+a: F = a
+b: private F = b
+
+a b c: ; @echo $@: F=$(F)
+a: b
+b: c
+',
+              '', "c: F=a\nb: F=b\na: F=a\n");
+
+# 2: Again, but this time we start with "b" so "a"'s variable is not in scope
+&run_make_test(undef, 'b', "c: F=g\nb: F=b\n");
+
+# 3: Verification with pattern-specific variables
+&run_make_test('
+t.a:
+
+F1 = g
+F2 = g
+%.a: private F1 = a
+%.a: F2 = a
+
+t.a t.b: ; @echo $@: F1=$(F1) / F2=$(F2)
+t.a: t.b
+',
+               '', "t.b: F1=g / F2=a\nt.a: F1=a / F2=a\n");
+
+# 4: Test private global variables
+&run_make_test('
+a:
+private F = g
+G := $(F)
+a:
+b: F = b
+
+a b: ; @echo $@: F=$(F) / G=$(G)
+a: b
+',
+               '', "b: F=b / G=g\na: F= / G=g\n");
+
+# 5: Multiple conditions on the same variable.  Test export.
+delete $ENV{'_X'};
+&run_make_test('
+_X = x
+a: export override private _X = a
+a: ; @echo _X=$(_X) / _X=$$_X
+',
+               '', "_X=a / _X=a");
+
+# 6: Test override.
+&run_make_test(undef, '_X=c', "_X=a / _X=a\n");
+
+# 7: Ensure keywords still work as targets
+&run_make_test('
+a: export override private foo bar
+foo bar export override private: ; @echo $@
+',
+               '', "export\noverride\nprivate\nfoo\nbar\n");
+
+# 8: Ensure keywords still work as variables
+&run_make_test('
+private = g
+a: private = a
+a: b
+a b: ; @echo $@=$(private)
+',
+               '', "b=a\na=a\n");
+
+# 9: make sure private suppresses inheritance
+run_make_test(q!
+DEFS = FOO
+all: bar1
+bar1: private DEFS += 1
+bar3: private DEFS += 3
+bar1: bar2
+bar2: bar3
+bar1 bar2 bar3: ; @echo '$@: $(DEFS)'
+!,
+              '', "bar3: FOO 3\nbar2: FOO\nbar1: FOO 1\n");
+
+# 10: Test append with pattern-specific variables and private
+
+run_make_test(q!
+IA = global
+PA = global
+PS = global
+S = global
+PS = global
+SV = global
+b%: IA += b%
+b%: private PA += b%
+b%: private PS = b%
+bar: all
+bar: IA += bar
+bar: private PA += bar
+bar: private PS = bar
+a%: IA += a%
+a%: private PA += a%
+a%: private PS = a%
+all: IA += all
+all: private PA += all
+all: private PS = all
+
+bar all: ; @echo '$@: IA=$(IA)'; echo '$@: PA=$(PA)'; echo '$@: PS=$(PS)'
+!,
+              '', "all: IA=global b% bar a% all
+all: PA=global a% all
+all: PS=all
+bar: IA=global b% bar
+bar: PA=global b% bar
+bar: PS=bar\n");
+
+1;
diff --git a/src/kmk/tests/scripts/variables/special b/src/kmk/tests/scripts/variables/special
new file mode 100644
index 0000000..7e8a64f
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/special
@@ -0,0 +1,150 @@
+#                                                                    -*-perl-*-
+
+$description = "Test special GNU make variables.";
+
+$details = "";
+
+&run_make_test('
+
+X1 := $(sort $(filter FOO BAR,$(.VARIABLES)))
+
+FOO := foo
+
+X2 := $(sort $(filter FOO BAR,$(.VARIABLES)))
+
+BAR := bar
+
+all: ; @echo X1 = $(X1); echo X2 = $(X2); echo LAST = $(sort $(filter FOO BAR,$(.VARIABLES)))
+',
+               '', "X1 =\nX2 = FOO\nLAST = BAR FOO\n");
+
+# SV 45728: Test that undefining a variable is reflected properly
+
+&run_make_test('
+FOO := foo
+BAR := bar
+$(info one: $(sort $(filter FOO BAR BAZ,$(.VARIABLES))))
+undefine BAR
+BAZ := baz
+$(info two: $(sort $(filter FOO BAR BAZ,$(.VARIABLES))))
+all:;@:
+',
+               '', "one: BAR FOO\ntwo: BAZ FOO\n");
+
+# $makefile2 = &get_tmpfile;
+# open(MAKEFILE, "> $makefile2");
+
+# print MAKEFILE <<'EOF';
+
+# X1 := $(sort $(.TARGETS))
+
+# all: foo
+#	@echo X1 = $(X1)
+#	@echo X2 = $(X2)
+#	@echo LAST = $(sort $(.TARGETS))
+
+# X2 := $(sort $(.TARGETS))
+
+# foo:
+
+# EOF
+
+# close(MAKEFILE);
+
+# # TEST #2
+# # -------
+
+# &run_make_with_options($makefile2, "", &get_logfile);
+# $answer = "X1 =\nX2 = all\nLAST = all foo\n";
+# &compare_output($answer, &get_logfile(1));
+
+# Test the .RECIPEPREFIX variable
+# kmk: This test isn't -j1 safe, haven't bother looking into why yet.
+&run_make_test('
+define foo
+: foo-one\
+foo-two
+: foo-three
+	: foo-four
+endef
+
+orig: ; : orig-one
+	: orig-two \
+orig-three \
+	orig-four \
+		orig-five \\\\
+	: orig-six
+	$(foo)
+
+.RECIPEPREFIX = >
+test: ; : test-one
+>: test-two \
+test-three \
+>test-four \
+>	test-five \\\\
+>: test-six
+>$(foo)
+
+.RECIPEPREFIX =
+reset: ; : reset-one
+	: reset-two \
+reset-three \
+	reset-four \
+		reset-five \\\\
+	: reset-six
+	$(foo)
+',
+               '-j1 orig test reset',
+               ': orig-one
+: orig-two \
+orig-three \
+orig-four \
+	orig-five \\\\
+: orig-six
+: foo-one foo-two
+: foo-three
+: foo-four
+: test-one
+: test-two \
+test-three \
+test-four \
+	test-five \\\\
+: test-six
+: foo-one foo-two
+: foo-three
+: foo-four
+: reset-one
+: reset-two \
+reset-three \
+reset-four \
+	reset-five \\\\
+: reset-six
+: foo-one foo-two
+: foo-three
+: foo-four');
+
+# Test that the "did you mean TAB" message is printed properly
+
+run_make_test(q!
+$x.
+!,
+              '', '#MAKEFILE#:2: *** missing separator.  Stop.', 512);
+
+run_make_test(q!
+foo:
+        bar
+!,
+              '', '#MAKEFILE#:3: *** missing separator (did you mean TAB instead of 8 spaces?).  Stop.', 512);
+
+run_make_test(q!
+.RECIPEPREFIX = :
+foo:
+        bar
+!,
+              '', '#MAKEFILE#:4: *** missing separator.  Stop.', 512);
+
+1;
+
+### Local Variables:
+### eval: (setq whitespace-action (delq 'auto-cleanup whitespace-action))
+### End:
diff --git a/src/kmk/tests/scripts/variables/undefine b/src/kmk/tests/scripts/variables/undefine
new file mode 100644
index 0000000..38707b8
--- /dev/null
+++ b/src/kmk/tests/scripts/variables/undefine
@@ -0,0 +1,73 @@
+#                                                                    -*-perl-*-
+
+$description = "Test variable undefine.";
+
+$details = "";
+
+# TEST 0: basic undefine functionality
+
+run_make_test('
+a = a
+b := b
+define c
+c
+endef
+
+$(info $(flavor a) $(flavor b) $(flavor c))
+
+n := b
+
+undefine a
+undefine $n
+undefine c
+
+$(info $(flavor a) $(flavor b) $(flavor c))
+
+
+all: ;@:
+',
+'', "recursive simple recursive\nundefined undefined undefined");
+
+
+# TEST 1: override
+
+run_make_test('
+undefine a
+override undefine b
+
+$(info $(flavor a) $(flavor b))
+
+
+all: ;@:
+',
+'a=a b=b', "recursive undefined");
+
+1;
+
+# TEST 2: undefine in eval (make sure we undefine from the global var set)
+
+run_make_test('
+define undef
+$(eval undefine $$1)
+endef
+
+a := a
+$(call undef,a)
+$(info $(flavor a))
+
+
+all: ;@:
+',
+'', "undefined");
+
+
+# TEST 3: Missing variable name
+
+run_make_test('
+a =
+undefine $a
+all: ;@echo ouch
+',
+'', "#MAKEFILE#:3: *** empty variable name.  Stop.\n", 512);
+
+1;
diff --git a/src/kmk/tests/scripts/vms/library b/src/kmk/tests/scripts/vms/library
new file mode 100644
index 0000000..9a64951
--- /dev/null
+++ b/src/kmk/tests/scripts/vms/library
@@ -0,0 +1,73 @@
+#                                                              -*-mode: perl-*-
+
+$description = "Test GNU make's VMS Library management features.";
+
+$details = "\
+This only works on VMS systems.";
+
+return -1 if $osname ne 'VMS';
+
+# Help library
+$mk_string = "help : help.hlb(file1.hlp)\n\n" .
+"file1.hlp :\n" .
+"\t\@pipe open/write xxx file1.hlp ; write xxx \"1 help\" ; close xxx\n";
+
+my $answer = "library /replace help.hlb file1.hlp";
+
+run_make_test($mk_string,
+              '', $answer);
+
+unlink('help.hlb');
+unlink('file1.hlp');
+
+#Text library
+$mk_string = "text : text.tlb(file1.txt)\n\n" .
+"file1.txt :\n" .
+"\t\@pipe open/write xxx file1.txt ; write xxx \"text file\" ; close xxx\n";
+
+my $answer = "library /replace text.tlb file1.txt";
+
+run_make_test($mk_string,
+              '', $answer);
+
+unlink('text.tlb');
+unlink('file1.txt');
+
+
+#Macro library
+$mk_string = "macro : macro.mlb(file1.mar)\n\n" .
+"file1.mar :\n" .
+"\t\pipe open/write xxx file1.mar ; " .
+"write xxx \".macro a b\" ; write xxx \".endm\" ; close xxx\n";
+
+my $answer = "library /replace macro.mlb file1.mar";
+
+run_make_test($mk_string,
+              '', $answer);
+
+unlink('macro.mlb');
+unlink('file1.mar');
+
+$mk_string =
+"all:imagelib.olb(file2.exe)\n" .
+"file2.exe : file2.obj file2.opt\n" .
+"\t\@link /share=\$\@ \$\*,\$\*/opt\n\n" .
+"file2.opt :\n" .
+"\t\@pipe open/write xxx file2.opt ; " .
+"write xxx \"CASE_SENSITIVE=YES\" ; close xxx\n" .
+"file2.c :\n" .
+"\t\@pipe open/write xxx file2.c ; write xxx \"file2(){}\" ; close xxx\n";
+
+my $answer = "library /replace imagelib.olb file2.exe";
+
+run_make_test($mk_string,
+              '', $answer);
+
+unlink('imagelib.olb');
+unlink('file2.c');
+unlink('file2.obj');
+unlink('file2.exe');
+unlink('file2.opt');
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/src/kmk/tests/test_driver.pl b/src/kmk/tests/test_driver.pl
new file mode 100644
index 0000000..799a65d
--- /dev/null
+++ b/src/kmk/tests/test_driver.pl
@@ -0,0 +1,1498 @@
+#!/usr/bin/perl
+# -*-perl-*-
+#
+# Modification history:
+# Written 91-12-02 through 92-01-01 by Stephen McGee.
+# Modified 92-02-11 through 92-02-22 by Chris Arthur to further generalize.
+#
+# Copyright (C) 1991-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+# Test driver routines used by a number of test suites, including
+# those for SCS, make, roll_dir, and scan_deps (?).
+#
+# this routine controls the whole mess; each test suite sets up a few
+# variables and then calls &toplevel, which does all the real work.
+
+# $Id$
+
+
+# The number of test categories we've run
+$categories_run = 0;
+# The number of test categroies that have passed
+$categories_passed = 0;
+# The total number of individual tests that have been run
+$total_tests_run = 0;
+# The total number of individual tests that have passed
+$total_tests_passed = 0;
+# The number of tests in this category that have been run
+$tests_run = 0;
+# The number of tests in this category that have passed
+$tests_passed = 0;
+
+
+# Yeesh.  This whole test environment is such a hack!
+$test_passed = 1;
+
+# Timeout in seconds.  If the test takes longer than this we'll fail it.
+$test_timeout = 5;
+$test_timeout = 10 if $^O eq 'VMS';
+
+# Path to Perl
+$perl_name = $^X;
+
+# %makeENV is the cleaned-out environment.
+%makeENV = ();
+
+# %extraENV are any extra environment variables the tests might want to set.
+# These are RESET AFTER EVERY TEST!
+%extraENV = ();
+
+sub vms_get_process_logicals {
+  # Sorry for the long note here, but to keep this test running on
+  # VMS, it is needed to be understood.
+  #
+  # Perl on VMS by default maps the %ENV array to the system wide logical
+  # name table.
+  #
+  # This is a very large dynamically changing table.
+  # On Linux, this would be the equivalent of a table that contained
+  # every mount point, temporary pipe, and symbolic link on every
+  # file system.  You normally do not have permission to clear or replace it,
+  # and if you did, the results would be catastrophic.
+  #
+  # On VMS, added/changed %ENV items show up in the process logical
+  # name table.  So to track changes, a copy of it needs to be captured.
+
+  my $raw_output = `show log/process/access_mode=supervisor`;
+  my @raw_output_lines = split('\n',$raw_output);
+  my %log_hash;
+  foreach my $line (@raw_output_lines) {
+    if ($line =~ /^\s+"([A-Za-z\$_]+)"\s+=\s+"(.+)"$/) {
+      $log_hash{$1} = $2;
+    }
+  }
+  return \%log_hash
+}
+
+# %origENV is the caller's original environment
+if ($^O ne 'VMS') {
+  %origENV = %ENV;
+} else {
+  my $proc_env = vms_get_process_logicals;
+  %origENV = %{$proc_env};
+}
+
+sub resetENV
+{
+  # We used to say "%ENV = ();" but this doesn't work in Perl 5.000
+  # through Perl 5.004.  It was fixed in Perl 5.004_01, but we don't
+  # want to require that here, so just delete each one individually.
+
+  if ($^O ne 'VMS') {
+    foreach $v (keys %ENV) {
+      delete $ENV{$v};
+    }
+
+    %ENV = %makeENV;
+  } else {
+    my $proc_env = vms_get_process_logicals();
+    my %delta = %{$proc_env};
+    foreach my $v (keys %delta) {
+      if (exists $origENV{$v}) {
+        if ($origENV{$v} ne $delta{$v}) {
+          $ENV{$v} = $origENV{$v};
+        }
+      } else {
+        delete $ENV{$v};
+      }
+    }
+  }
+
+  foreach $v (keys %extraENV) {
+    $ENV{$v} = $extraENV{$v};
+    delete $extraENV{$v};
+  }
+}
+
+sub toplevel
+{
+  # Pull in benign variables from the user's environment
+
+  foreach (# UNIX-specific things
+           'TZ', 'TMPDIR', 'HOME', 'USER', 'LOGNAME', 'PATH',
+           'LD_LIBRARY_PATH',
+           # Purify things
+           'PURIFYOPTIONS',
+           # Windows NT-specific stuff
+           'Path', 'SystemRoot',
+           # DJGPP-specific stuff
+           'DJDIR', 'DJGPP', 'SHELL', 'COMSPEC', 'HOSTNAME', 'LFN',
+           'FNCASE', '387', 'EMU387', 'GROUP'
+          ) {
+    $makeENV{$_} = $ENV{$_} if $ENV{$_};
+  }
+
+  # Make sure our compares are not foiled by locale differences
+
+  $makeENV{LC_ALL} = 'C';
+
+  # Replace the environment with the new one
+  #
+  %origENV = %ENV unless $^O eq 'VMS';
+
+  resetENV();
+
+  $| = 1;                     # unbuffered output
+
+  $debug = 0;                 # debug flag
+  $profile = 0;               # profiling flag
+  $verbose = 0;               # verbose mode flag
+  $detail = 0;                # detailed verbosity
+  $keep = 0;                  # keep temp files around
+  $workdir = "work";          # The directory where the test will start running
+  $scriptdir = "scripts";     # The directory where we find the test scripts
+  $tmpfilesuffix = "t";       # the suffix used on tmpfiles
+  $default_output_stack_level = 0;  # used by attach_default_output, etc.
+  $default_input_stack_level = 0;   # used by attach_default_input, etc.
+  $cwd = ".";                 # don't we wish we knew
+  $cwdslash = "";             # $cwd . $pathsep, but "" rather than "./"
+  $is_kmk = 0;                # kmk flag.
+  $is_fast = 0;               # kmk_fgmake flag.
+
+  &get_osname;  # sets $osname, $vos, $pathsep, $short_filenames,
+                # and $case_insensitive_fs
+
+  &set_defaults;  # suite-defined
+
+  &parse_command_line (@ARGV);
+
+  print "OS name = '$osname'\n" if $debug;
+
+  $workpath = "$cwdslash$workdir";
+  $scriptpath = "$cwdslash$scriptdir";
+
+  &set_more_defaults;  # suite-defined
+
+  &print_banner;
+
+  if ($osname eq 'VMS' && $cwdslash eq "")
+  {
+    # Porting this script to VMS revealed a small bug in opendir() not
+    # handling search lists correctly when the directory only exists in
+    # one of the logical_devices.  Need to find the first directory in
+    # the search list, as that is where things will be written to.
+    my @dirs = split("/", $pwd);
+
+    my $logical_device = $ENV{$dirs[1]};
+    if ($logical_device =~ /([A-Za-z0-9_]+):(:?.+:)+/)
+    {
+        # A search list was found.  Grab the first logical device
+        # and use it instead of the search list.
+        $dirs[1]=$1;
+        my $lcl_pwd = join('/', @dirs);
+        $workpath = $lcl_pwd . '/' . $workdir
+    }
+  }
+
+  if (-d $workpath)
+  {
+    print "Clearing $workpath...\n";
+    &remove_directory_tree("$workpath/")
+          || &error ("Couldn't wipe out $workpath\n");
+  }
+  else
+  {
+    mkdir ($workpath, 0777) || &error ("Couldn't mkdir $workpath: $!\n");
+  }
+
+  if (!-d $scriptpath)
+  {
+    &error ("Failed to find $scriptpath containing perl test scripts.\n");
+  }
+
+  if (@TESTS)
+  {
+    print "Making work dirs...\n";
+    foreach $test (@TESTS)
+    {
+      if ($test =~ /^([^\/]+)\//)
+      {
+        $dir = $1;
+        push (@rmdirs, $dir);
+        -d "$workpath/$dir"
+           || mkdir ("$workpath/$dir", 0777)
+           || &error ("Couldn't mkdir $workpath/$dir: $!\n");
+      }
+    }
+  }
+  else
+  {
+    print "Finding tests...\n";
+    opendir (SCRIPTDIR, $scriptpath)
+        || &error ("Couldn't opendir $scriptpath: $!\n");
+    @dirs = grep (!/^(\..*|CVS|RCS)$/, readdir (SCRIPTDIR) );
+    closedir (SCRIPTDIR);
+    foreach $dir (@dirs)
+    {
+      next if ($dir =~ /^(\..*|CVS|RCS)$/ || ! -d "$scriptpath/$dir");
+      push (@rmdirs, $dir);
+      # VMS can have overlayed file systems, so directories may repeat.
+      next if -d "$workpath/$dir";
+      mkdir ("$workpath/$dir", 0777)
+          || &error ("Couldn't mkdir $workpath/$dir: $!\n");
+      opendir (SCRIPTDIR, "$scriptpath/$dir")
+          || &error ("Couldn't opendir $scriptpath/$dir: $!\n");
+      @files = grep (!/^(\..*|CVS|RCS|.*~)$/, readdir (SCRIPTDIR) );
+      closedir (SCRIPTDIR);
+      foreach $test (@files)
+      {
+        -d $test and next;
+        push (@TESTS, "$dir/$test");
+      }
+    }
+  }
+
+  if (@TESTS == 0)
+  {
+    &error ("\nNo tests in $scriptpath, and none were specified.\n");
+  }
+
+  print "\n";
+
+  run_all_tests();
+
+  foreach $dir (@rmdirs)
+  {
+    rmdir ("$workpath/$dir");
+  }
+
+  $| = 1;
+
+  $categories_failed = $categories_run - $categories_passed;
+  $total_tests_failed = $total_tests_run - $total_tests_passed;
+
+  if ($total_tests_failed)
+  {
+    print "\n$total_tests_failed Test";
+    print "s" unless $total_tests_failed == 1;
+    print " in $categories_failed Categor";
+    print ($categories_failed == 1 ? "y" : "ies");
+    print " Failed (See .$diffext* files in $workdir dir for details) :-(\n\n";
+    return 0;
+  }
+  else
+  {
+    print "\n$total_tests_passed Test";
+    print "s" unless $total_tests_passed == 1;
+    print " in $categories_passed Categor";
+    print ($categories_passed == 1 ? "y" : "ies");
+    print " Complete ... No Failures :-)\n\n";
+    return 1;
+  }
+}
+
+sub get_osname
+{
+  # Set up an initial value.  In perl5 we can do it the easy way.
+  $osname = defined($^O) ? $^O : '';
+
+  if ($osname eq 'VMS')
+  {
+    $vos = 0;
+    $pathsep = "/";
+    return;
+  }
+
+  # Find a path to Perl
+
+  # See if the filesystem supports long file names with multiple
+  # dots.  DOS doesn't.
+  $short_filenames = 0;
+  (open (TOUCHFD, "> fancy.file.name") && close (TOUCHFD))
+      || ($short_filenames = 1);
+  unlink ("fancy.file.name") || ($short_filenames = 1);
+
+  if (! $short_filenames) {
+    # Thanks go to meyering@cs.utexas.edu (Jim Meyering) for suggesting a
+    # better way of doing this.  (We used to test for existence of a /mnt
+    # dir, but that apparently fails on an SGI Indigo (whatever that is).)
+    # Because perl on VOS translates /'s to >'s, we need to test for
+    # VOSness rather than testing for Unixness (ie, try > instead of /).
+
+    mkdir (".ostest", 0777) || &error ("Couldn't create .ostest: $!\n", 1);
+    open (TOUCHFD, "> .ostest>ick") && close (TOUCHFD);
+    chdir (".ostest") || &error ("Couldn't chdir to .ostest: $!\n", 1);
+  }
+
+  if (! $short_filenames && -f "ick")
+  {
+    $osname = "vos";
+    $vos = 1;
+    $pathsep = ">";
+  }
+  else
+  {
+    # the following is regrettably knarly, but it seems to be the only way
+    # to not get ugly error messages if uname can't be found.
+    # Hmmm, BSD/OS 2.0's uname -a is excessively verbose.  Let's try it
+    # with switches first.
+    eval "chop (\$osname = `sh -c 'uname -nmsr 2>&1'`)";
+    if ($osname =~ /not found/i)
+    {
+        $osname = "(something posixy with no uname)";
+    }
+    elsif ($@ ne "" || $?)
+    {
+        eval "chop (\$osname = `sh -c 'uname -a 2>&1'`)";
+        if ($@ ne "" || $?)
+        {
+            $osname = "(something posixy)";
+        }
+    }
+    $vos = 0;
+    $pathsep = "/";
+  }
+
+  if (! $short_filenames) {
+    chdir ("..") || &error ("Couldn't chdir to ..: $!\n", 1);
+    unlink (".ostest>ick");
+    rmdir (".ostest") || &error ("Couldn't rmdir .ostest: $!\n", 1);
+  }
+
+  # Check for case insensitive file system (bird)
+  # The deal is that the 2nd unlink will fail because the first one
+  # will already have removed the file if the fs ignore case.
+  $case_insensitive_fs = 0;
+  my $testfile1 = $short_filenames ? "CaseFs.rmt" : "CaseInSensitiveFs.check";
+  my $testfile2 = $short_filenames ? "casEfS.rmt" : "casEiNsensitivEfS.Check";
+  (open (TOUCHFD, "> $testfile1") &&  close (TOUCHFD))
+    || &error ("Couldn't create $testfile1: $!\n", 1);
+  (open (TOUCHFD, "> $testfile2") &&  close (TOUCHFD))
+    || &error ("Couldn't create $testfile2: $!\n", 1);
+  unlink ($testfile1) || &error ("Couldn't unlink $testfile1: $!\n", 1);
+  unlink ($testfile2) || ($case_insensitive_fs = 1);
+}
+
+sub parse_command_line
+{
+  @argv = @_;
+
+  # use @ARGV if no args were passed in
+
+  if (@argv == 0)
+  {
+    @argv = @ARGV;
+  }
+
+  # look at each option; if we don't recognize it, maybe the suite-specific
+  # command line parsing code will...
+
+  while (@argv)
+  {
+    $option = shift @argv;
+    if ($option =~ /^-debug$/i)
+    {
+      print "\nDEBUG ON\n";
+      $debug = 1;
+    }
+    elsif ($option =~ /^-usage$/i)
+    {
+      &print_usage;
+      exit 0;
+    }
+    elsif ($option =~ /^-(h|help)$/i)
+    {
+      &print_help;
+      exit 0;
+    }
+    elsif ($option =~ /^-profile$/i)
+    {
+      $profile = 1;
+    }
+    elsif ($option =~ /^-verbose$/i)
+    {
+      $verbose = 1;
+    }
+    elsif ($option =~ /^-detail$/i)
+    {
+      $detail = 1;
+      $verbose = 1;
+    }
+    elsif ($option =~ /^-keep$/i)
+    {
+      $keep = 1;
+    }
+    elsif ($option =~ /^-kmk/i)
+    {
+      $is_kmk = 1;
+    }
+    elsif ($option =~ /^-fast/i)
+    {
+      $is_fast = 1;
+    }
+    elsif (&valid_option($option))
+    {
+      # The suite-defined subroutine takes care of the option
+    }
+    elsif ($option =~ /^-/)
+    {
+      print "Invalid option: $option\n";
+      &print_usage;
+      exit 0;
+    }
+    else # must be the name of a test
+    {
+      $option =~ s/\.pl$//;
+      push(@TESTS,$option);
+    }
+  }
+}
+
+sub max
+{
+  local($num) = shift @_;
+  local($newnum);
+
+  while (@_)
+  {
+    $newnum = shift @_;
+    if ($newnum > $num)
+    {
+      $num = $newnum;
+    }
+  }
+
+  return $num;
+}
+
+sub print_centered
+{
+  local($width, $string) = @_;
+  local($pad);
+
+  if (length ($string))
+  {
+    $pad = " " x ( ($width - length ($string) + 1) / 2);
+    print "$pad$string";
+  }
+}
+
+sub print_banner
+{
+  local($info);
+  local($line);
+  local($len);
+
+  $info = "Running tests for $testee on $osname\n";  # $testee is suite-defined
+  $len = &max (length ($line), length ($testee_version),
+               length ($banner_info), 73) + 5;
+  $line = ("-" x $len) . "\n";
+  if ($len < 78)
+  {
+    $len = 78;
+  }
+
+  &print_centered ($len, $line);
+  &print_centered ($len, $info);
+  &print_centered ($len, $testee_version);  # suite-defined
+  &print_centered ($len, $banner_info);     # suite-defined
+  &print_centered ($len, $line);
+  print "\n";
+}
+
+sub run_all_tests
+{
+    $categories_run = 0;
+
+    $lasttest = '';
+    foreach $testname (sort @TESTS) {
+        # Skip duplicates on VMS caused by logical name search lists.
+        next if $testname eq $lasttest;
+        $lasttest = $testname;
+        $suite_passed = 1;       # reset by test on failure
+        $num_of_logfiles = 0;
+        $num_of_tmpfiles = 0;
+        $description = "";
+        $details = "";
+        $old_makefile = undef;
+        $testname =~ s/^$scriptpath$pathsep//;
+        $perl_testname = "$scriptpath$pathsep$testname";
+        $testname =~ s/(\.pl|\.perl)$//;
+        $testpath = "$workpath$pathsep$testname";
+        # Leave enough space in the extensions to append a number, even
+        # though it needs to fit into 8+3 limits.
+        if ($short_filenames) {
+            $logext = 'l';
+            $diffext = 'd';
+            $baseext = 'b';
+            $runext = 'r';
+            $extext = '';
+        } else {
+            $logext = 'log';
+            $diffext = 'diff';
+            $baseext = 'base';
+            $runext = 'run';
+            $extext = '.';
+        }
+        $extext = '_' if $^O eq 'VMS';
+        $log_filename = "$testpath.$logext";
+        $diff_filename = "$testpath.$diffext";
+        $base_filename = "$testpath.$baseext";
+        $run_filename = "$testpath.$runext";
+        $tmp_filename = "$testpath.$tmpfilesuffix";
+
+        setup_for_test();
+
+        $output = "........................................................ ";
+
+        substr($output,0,length($testname)) = "$testname ";
+
+        print $output;
+
+        $tests_run = 0;
+        $tests_passed = 0;
+
+        # Run the test!
+        $code = do $perl_testname;
+
+        ++$categories_run;
+        $total_tests_run += $tests_run;
+        $total_tests_passed += $tests_passed;
+
+        # How did it go?
+        if (!defined($code)) {
+            # Failed to parse or called die
+            if (length ($@)) {
+                warn "\n*** Test died ($testname): $@\n";
+            } else {
+                warn "\n*** Couldn't parse $perl_testname\n";
+            }
+            $status = "FAILED ($tests_passed/$tests_run passed)";
+        }
+
+        elsif ($code == -1) {
+            # Skipped... not supported
+            $status = "N/A";
+            --$categories_run;
+        }
+
+        elsif ($code != 1) {
+            # Bad result... this shouldn't really happen.  Usually means that
+            # the suite forgot to end with "1;".
+            warn "\n*** Test returned $code\n";
+            $status = "FAILED ($tests_passed/$tests_run passed)";
+        }
+
+        elsif ($tests_run == 0) {
+            # Nothing was done!!
+            $status = "FAILED (no tests found!)";
+        }
+
+        elsif ($tests_run > $tests_passed) {
+            # Lose!
+            $status = "FAILED ($tests_passed/$tests_run passed)";
+        }
+
+        else {
+            # Win!
+            ++$categories_passed;
+            $status = "ok     ($tests_passed passed)";
+
+            # Clean up
+            for ($i = $num_of_tmpfiles; $i; $i--) {
+                rmfiles($tmp_filename . num_suffix($i));
+            }
+            for ($i = $num_of_logfiles ? $num_of_logfiles : 1; $i; $i--) {
+                rmfiles($log_filename . num_suffix($i));
+                rmfiles($base_filename . num_suffix($i));
+            }
+        }
+
+        # If the verbose option has been specified, then a short description
+        # of each test is printed before displaying the results of each test
+        # describing WHAT is being tested.
+
+        if ($verbose) {
+            if ($detail) {
+                print "\nWHAT IS BEING TESTED\n";
+                print "--------------------";
+            }
+            print "\n\n$description\n\n";
+        }
+
+        # If the detail option has been specified, then the details of HOW
+        # the test is testing what it says it is testing in the verbose output
+        # will be displayed here before the results of the test are displayed.
+
+        if ($detail) {
+            print "\nHOW IT IS TESTED\n";
+            print "----------------";
+            print "\n\n$details\n\n";
+        }
+
+        print "$status\n";
+    }
+}
+
+# If the keep flag is not set, this subroutine deletes all filenames that
+# are sent to it.
+
+sub rmfiles
+{
+  local(@files) = @_;
+
+  if (!$keep)
+  {
+    return (unlink @files);
+  }
+
+  return 1;
+}
+
+sub print_standard_usage
+{
+  local($plname,@moreusage) = @_;
+  local($line);
+
+  print "usage:\t$plname [testname] [-verbose] [-detail] [-keep]\n";
+  print "\t\t\t[-profile] [-usage] [-help] [-debug]\n";
+  foreach (@moreusage) {
+    print "\t\t\t$_\n";
+  }
+}
+
+sub print_standard_help
+{
+  local(@morehelp) = @_;
+  local($line);
+  local($tline);
+  local($t) = "      ";
+
+  $line = "Test Driver For $testee";
+  print "$line\n";
+  $line = "=" x length ($line);
+  print "$line\n";
+
+  &print_usage;
+
+  print "\ntestname\n"
+      . "${t}You may, if you wish, run only ONE test if you know the name\n"
+      . "${t}of that test and specify this name anywhere on the command\n"
+      . "${t}line.  Otherwise ALL existing tests in the scripts directory\n"
+      . "${t}will be run.\n"
+      . "-verbose\n"
+      . "${t}If this option is given, a description of every test is\n"
+      . "${t}displayed before the test is run. (Not all tests may have\n"
+      . "${t}descriptions at this time)\n"
+      . "-detail\n"
+      . "${t}If this option is given, a detailed description of every\n"
+      . "${t}test is displayed before the test is run. (Not all tests\n"
+      . "${t}have descriptions at this time)\n"
+      . "-profile\n"
+      . "${t}If this option is given, then the profile file\n"
+      . "${t}is added to other profiles every time $testee is run.\n"
+      . "${t}This option only works on VOS at this time.\n"
+      . "-keep\n"
+      . "${t}You may give this option if you DO NOT want ANY\n"
+      . "${t}of the files generated by the tests to be deleted. \n"
+      . "${t}Without this option, all files generated by the test will\n"
+      . "${t}be deleted IF THE TEST PASSES.\n"
+      . "-debug\n"
+      . "${t}Use this option if you would like to see all of the system\n"
+      . "${t}calls issued and their return status while running the tests\n"
+      . "${t}This can be helpful if you're having a problem adding a test\n"
+      . "${t}to the suite, or if the test fails!\n";
+
+  foreach $line (@morehelp)
+  {
+    $tline = $line;
+    if (substr ($tline, 0, 1) eq "\t")
+    {
+      substr ($tline, 0, 1) = $t;
+    }
+    print "$tline\n";
+  }
+}
+
+#######################################################################
+###########         Generic Test Driver Subroutines         ###########
+#######################################################################
+
+sub get_caller
+{
+  local($depth);
+  local($package);
+  local($filename);
+  local($linenum);
+
+  $depth = defined ($_[0]) ? $_[0] : 1;
+  ($package, $filename, $linenum) = caller ($depth + 1);
+  return "$filename: $linenum";
+}
+
+sub error
+{
+  local($message) = $_[0];
+  local($caller) = &get_caller (1);
+
+  if (defined ($_[1]))
+  {
+    $caller = &get_caller ($_[1] + 1) . " -> $caller";
+  }
+
+  die "$caller: $message";
+}
+
+sub compare_output
+{
+  local($answer,$logfile) = @_;
+  local($slurp, $answer_matched) = ('', 0);
+
+  ++$tests_run;
+
+  if (! defined $answer) {
+      print "Ignoring output ........ " if $debug;
+      $answer_matched = 1;
+  } else {
+      print "Comparing Output ........ " if $debug;
+
+      $slurp = &read_file_into_string ($logfile);
+
+      # For make, get rid of any time skew error before comparing--too bad this
+      # has to go into the "generic" driver code :-/
+      $slurp =~ s/^.*modification time .*in the future.*\n//gm;
+      $slurp =~ s/^.*Clock skew detected.*\n//gm;
+
+      if ($slurp eq $answer) {
+          $answer_matched = 1;
+      } else {
+          # See if it is a slash or CRLF problem
+          local ($answer_mod, $slurp_mod) = ($answer, $slurp);
+
+          $answer_mod =~ tr,\\,/,;
+          $answer_mod =~ s,\r\n,\n,gs;
+
+          $slurp_mod =~ tr,\\,/,;
+          $slurp_mod =~ s,\r\n,\n,gs;
+
+          $answer_matched = ($slurp_mod eq $answer_mod);
+          if ($^O eq 'VMS') {
+
+            # VMS has extra blank lines in output sometimes.
+            # Ticket #41760
+            if (!$answer_matched) {
+              $slurp_mod =~ s/\n\n+/\n/gm;
+              $slurp_mod =~ s/\A\n+//g;
+              $answer_matched = ($slurp_mod eq $answer_mod);
+            }
+
+            # VMS adding a "Waiting for unfinished jobs..."
+            # Remove it for now to see what else is going on.
+            if (!$answer_matched) {
+              $slurp_mod =~ s/^.+\*\*\* Waiting for unfinished jobs.+$//m;
+              $slurp_mod =~ s/\n\n/\n/gm;
+              $slurp_mod =~ s/^\n+//gm;
+              $answer_matched = ($slurp_mod eq $answer_mod);
+            }
+
+            # VMS wants target device to exist or generates an error,
+            # Some test tagets look like VMS devices and trip this.
+            if (!$answer_matched) {
+              $slurp_mod =~ s/^.+\: no such device or address.*$//gim;
+              $slurp_mod =~ s/\n\n/\n/gm;
+              $slurp_mod =~ s/^\n+//gm;
+              $answer_matched = ($slurp_mod eq $answer_mod);
+            }
+
+            # VMS error message has a different case
+            if (!$answer_matched) {
+              $slurp_mod =~ s/no such file /No such file /gm;
+              $answer_matched = ($slurp_mod eq $answer_mod);
+            }
+
+            # VMS is putting comas instead of spaces in output
+            if (!$answer_matched) {
+              $slurp_mod =~ s/,/ /gm;
+              $answer_matched = ($slurp_mod eq $answer_mod);
+            }
+
+            # VMS Is sometimes adding extra leading spaces to output?
+            if (!$answer_matched) {
+               my $slurp_mod = $slurp_mod;
+               $slurp_mod =~ s/^ +//gm;
+               $answer_matched = ($slurp_mod eq $answer_mod);
+            }
+
+            # VMS port not handling POSIX encoded child status
+            # Translate error case it for now.
+            if (!$answer_matched) {
+              $slurp_mod =~ s/0x1035a00a/1/gim;
+              $answer_matched = 1 if $slurp_mod =~ /\Q$answer_mod\E/i;
+
+            }
+            if (!$answer_matched) {
+              $slurp_mod =~ s/0x1035a012/2/gim;
+              $answer_matched = ($slurp_mod eq $answer_mod);
+            }
+
+            # Tests are using a UNIX null command, temp hack
+            # until this can be handled by the VMS port.
+            # ticket # 41761
+            if (!$answer_matched) {
+              $slurp_mod =~ s/^.+DCL-W-NOCOMD.*$//gim;
+              $slurp_mod =~ s/\n\n+/\n/gm;
+              $slurp_mod =~ s/^\n+//gm;
+              $answer_matched = ($slurp_mod eq $answer_mod);
+            }
+            # Tests are using exit 0;
+            # this generates a warning that should stop the make, but does not
+            if (!$answer_matched) {
+              $slurp_mod =~ s/^.+NONAME-W-NOMSG.*$//gim;
+              $slurp_mod =~ s/\n\n+/\n/gm;
+              $slurp_mod =~ s/^\n+//gm;
+              $answer_matched = ($slurp_mod eq $answer_mod);
+            }
+
+            # VMS is sometimes adding single quotes to output?
+            if (!$answer_matched) {
+              my $noq_slurp_mod = $slurp_mod;
+              $noq_slurp_mod =~ s/\'//gm;
+              $answer_matched = ($noq_slurp_mod eq $answer_mod);
+
+              # And missing an extra space in output
+              if (!$answer_matched) {
+                $noq_answer_mod = $answer_mod;
+                $noq_answer_mod =~ s/\h\h+/ /gm;
+                $answer_matched = ($noq_slurp_mod eq $noq_answer_mod);
+              }
+
+              # VMS adding ; to end of some lines.
+              if (!$answer_matched) {
+                $noq_slurp_mod =~ s/;\n/\n/gm;
+                $answer_matched = ($noq_slurp_mod eq $noq_answer_mod);
+              }
+
+              # VMS adding trailing space to end of some quoted lines.
+              if (!$answer_matched) {
+                $noq_slurp_mod =~ s/\h+\n/\n/gm;
+                $answer_matched = ($noq_slurp_mod eq $noq_answer_mod);
+              }
+
+              # And VMS missing leading blank line
+              if (!$answer_matched) {
+                $noq_answer_mod =~ s/\A\n//g;
+                $answer_matched = ($noq_slurp_mod eq $noq_answer_mod);
+              }
+
+              # Unix double quotes showing up as single quotes on VMS.
+              if (!$answer_matched) {
+                $noq_answer_mod =~ s/\"//g;
+                $answer_matched = ($noq_slurp_mod eq $noq_answer_mod);
+              }
+            }
+          }
+
+          # If it still doesn't match, see if the answer might be a regex.
+          if (!$answer_matched && $answer =~ m,^/(.+)/$,) {
+              $answer_matched = ($slurp =~ /$1/);
+              if (!$answer_matched && $answer_mod =~ m,^/(.+)/$,) {
+                  $answer_matched = ($slurp_mod =~ /$1/);
+              }
+          }
+      }
+  }
+
+  if ($answer_matched && $test_passed)
+  {
+    print "ok\n" if $debug;
+    ++$tests_passed;
+    return 1;
+  }
+
+  if (! $answer_matched) {
+    print "DIFFERENT OUTPUT\n" if $debug;
+
+    &create_file (&get_basefile, $answer);
+    &create_file (&get_runfile, $command_string);
+
+    print "\nCreating Difference File ...\n" if $debug;
+
+    # Create the difference file
+
+    local($command) = "diff -c " . &get_basefile . " " . $logfile;
+    &run_command_with_output(&get_difffile,$command);
+  }
+
+  return 0;
+}
+
+sub read_file_into_string
+{
+  local($filename) = @_;
+  local($oldslash) = $/;
+
+  undef $/;
+
+  open (RFISFILE, $filename) || return "";
+  local ($slurp) = <RFISFILE>;
+  close (RFISFILE);
+
+  $/ = $oldslash;
+
+  return $slurp;
+}
+
+my @OUTSTACK = ();
+my @ERRSTACK = ();
+
+sub attach_default_output
+{
+  local ($filename) = @_;
+  local ($code);
+
+  if ($vos)
+  {
+    $code = system "++attach_default_output_hack $filename";
+    $code == -2 || &error ("adoh death\n", 1);
+    return 1;
+  }
+
+  my $dup = undef;
+  open($dup, '>&', STDOUT) or error("ado: $! duping STDOUT\n", 1);
+  push @OUTSTACK, $dup;
+
+  $dup = undef;
+  open($dup, '>&', STDERR) or error("ado: $! duping STDERR\n", 1);
+  push @ERRSTACK, $dup;
+
+  open(STDOUT, '>', $filename) or error("ado: $filename: $!\n", 1);
+  open(STDERR, ">&STDOUT") or error("ado: $filename: $!\n", 1);
+}
+
+# close the current stdout/stderr, and restore the previous ones from
+# the "stack."
+
+sub detach_default_output
+{
+  local ($code);
+
+  if ($vos)
+  {
+    $code = system "++detach_default_output_hack";
+    $code == -2 || &error ("ddoh death\n", 1);
+    return 1;
+  }
+
+  @OUTSTACK or error("default output stack has flown under!\n", 1);
+
+  close(STDOUT);
+  close(STDERR) unless $^O eq 'VMS';
+
+
+  open (STDOUT, '>&', pop @OUTSTACK) or error("ddo: $! duping STDOUT\n", 1);
+  open (STDERR, '>&', pop @ERRSTACK) or error("ddo: $! duping STDERR\n", 1);
+}
+
+# This runs a command without any debugging info.
+sub _run_command
+{
+  my $code;
+
+  # We reset this before every invocation.  On Windows I think there is only
+  # one environment, not one per process, so I think that variables set in
+  # test scripts might leak into subsequent tests if this isn't reset--???
+  resetENV();
+
+  eval {
+      if ($^O eq 'VMS') {
+          local $SIG{ALRM} = sub {
+              my $e = $ERRSTACK[0];
+              print $e "\nTest timed out after $test_timeout seconds\n";
+              die "timeout\n"; };
+#          alarm $test_timeout;
+          system(@_);
+          my $severity = ${^CHILD_ERROR_NATIVE} & 7;
+          $code = 0;
+          if (($severity & 1) == 0) {
+              $code = 512;
+          }
+
+          # Get the vms status.
+          my $vms_code = ${^CHILD_ERROR_NATIVE};
+
+          # Remove the print status bit
+          $vms_code &= ~0x10000000;
+
+          # Posix code translation.
+          if (($vms_code & 0xFFFFF000) == 0x35a000) {
+              $code = (($vms_code & 0xFFF) >> 3) * 256;
+          }
+      } else {
+          my $pid = fork();
+          if (! $pid) {
+              exec(@_) or die "Cannot execute $_[0]\n";
+          }
+          local $SIG{ALRM} = sub { my $e = $ERRSTACK[0]; print $e "\nTest timed out after $test_timeout seconds\n"; die "timeout\n"; };
+          alarm $test_timeout;
+          waitpid($pid, 0) > 0 or die "No such pid: $pid\n";
+          $code = $?;
+      }
+      alarm 0;
+  };
+  if ($@) {
+      # The eval failed.  If it wasn't SIGALRM then die.
+      $@ eq "timeout\n" or die "Command failed: $@";
+
+      # Timed out.  Resend the alarm to our process group to kill the children.
+      $SIG{ALRM} = 'IGNORE';
+      kill -14, $$;
+      $code = 14;
+  }
+
+  return $code;
+}
+
+# run one command (passed as a list of arg 0 - n), returning 0 on success
+# and nonzero on failure.
+
+sub run_command
+{
+  print "\nrun_command: @_\n" if $debug;
+  my $code = _run_command(@_);
+  print "run_command returned $code.\n" if $debug;
+  print "vms status = ${^CHILD_ERROR_NATIVE}\n" if $debug and $^O eq 'VMS';
+  return $code;
+}
+
+# run one command (passed as a list of arg 0 - n, with arg 0 being the
+# second arg to this routine), returning 0 on success and non-zero on failure.
+# The first arg to this routine is a filename to connect to the stdout
+# & stderr of the child process.
+
+sub run_command_with_output
+{
+  my $filename = shift;
+
+  print "\nrun_command_with_output($filename,$runname): @_\n" if $debug;
+  &attach_default_output ($filename);
+  my $code = eval { _run_command(@_) };
+  my $err = $@;
+  &detach_default_output;
+
+  $err and die $err;
+
+  print "run_command_with_output returned $code.\n" if $debug;
+  print "vms status = ${^CHILD_ERROR_NATIVE}\n" if $debug and $^O eq 'VMS';
+  return $code;
+}
+
+# performs the equivalent of an "rm -rf" on the first argument.  Like
+# rm, if the path ends in /, leaves the (now empty) directory; otherwise
+# deletes it, too.
+
+sub remove_directory_tree
+{
+  local ($targetdir) = @_;
+  local ($nuketop) = 1;
+  local ($ch);
+
+  $ch = substr ($targetdir, length ($targetdir) - 1);
+  if ($ch eq "/" || $ch eq $pathsep)
+  {
+    $targetdir = substr ($targetdir, 0, length ($targetdir) - 1);
+    $nuketop = 0;
+  }
+
+  if (! -e $targetdir)
+  {
+    return 1;
+  }
+
+  &remove_directory_tree_inner ("RDT00", $targetdir) || return 0;
+  if ($nuketop)
+  {
+    rmdir $targetdir || return 0;
+  }
+
+  return 1;
+}
+
+sub remove_directory_tree_inner
+{
+  local ($dirhandle, $targetdir) = @_;
+  local ($object);
+  local ($subdirhandle);
+
+  opendir ($dirhandle, $targetdir) || return 0;
+  $subdirhandle = $dirhandle;
+  $subdirhandle++;
+  while ($object = readdir ($dirhandle))
+  {
+    if ($object =~ /^(\.\.?|CVS|RCS)$/)
+    {
+      next;
+    }
+
+    $object = "$targetdir$pathsep$object";
+    lstat ($object);
+
+    if (-d _ && &remove_directory_tree_inner ($subdirhandle, $object))
+    {
+      rmdir $object || return 0;
+    }
+    else
+    {
+      if ($^O ne 'VMS')
+      {
+        unlink $object || return 0;
+      }
+      else
+      {
+        # VMS can have multiple versions of a file.
+        1 while unlink $object;
+      }
+    }
+  }
+  closedir ($dirhandle);
+  return 1;
+}
+
+# We used to use this behavior for this function:
+#
+#sub touch
+#{
+#  local (@filenames) = @_;
+#  local ($now) = time;
+#  local ($file);
+#
+#  foreach $file (@filenames)
+#  {
+#    utime ($now, $now, $file)
+#          || (open (TOUCHFD, ">> $file") && close (TOUCHFD))
+#               || &error ("Couldn't touch $file: $!\n", 1);
+#  }
+#  return 1;
+#}
+#
+# But this behaves badly on networked filesystems where the time is
+# skewed, because it sets the time of the file based on the _local_
+# host.  Normally when you modify a file, it's the _remote_ host that
+# determines the modtime, based on _its_ clock.  So, instead, now we open
+# the file and write something into it to force the remote host to set
+# the modtime correctly according to its clock.
+#
+
+sub touch
+{
+  local ($file);
+
+  foreach $file (@_) {
+    (open(T, ">> $file") && print(T "\n") && close(T))
+        || &error("Couldn't touch $file: $!\n", 1);
+  }
+}
+
+# Touch with a time offset.  To DTRT, call touch() then use stat() to get the
+# access/mod time for each file and apply the offset.
+
+sub utouch
+{
+  local ($off) = shift;
+  local ($file);
+
+  &touch(@_);
+
+  local (@s) = stat($_[0]);
+
+  utime($s[8]+$off, $s[9]+$off, @_);
+}
+
+# open a file, write some stuff to it, and close it.
+
+sub create_file
+{
+  local ($filename, @lines) = @_;
+
+  open (CF, "> $filename") || &error ("Couldn't open $filename: $!\n", 1);
+  foreach $line (@lines)
+  {
+    print CF $line;
+  }
+  close (CF);
+}
+
+# create a directory tree described by an associative array, wherein each
+# key is a relative pathname (using slashes) and its associated value is
+# one of:
+#    DIR            indicates a directory
+#    FILE:contents  indicates a file, which should contain contents +\n
+#    LINK:target    indicates a symlink, pointing to $basedir/target
+# The first argument is the dir under which the structure will be created
+# (the dir will be made and/or cleaned if necessary); the second argument
+# is the associative array.
+
+sub create_dir_tree
+{
+  local ($basedir, %dirtree) = @_;
+  local ($path);
+
+  &remove_directory_tree ("$basedir");
+  mkdir ($basedir, 0777) || &error ("Couldn't mkdir $basedir: $!\n", 1);
+
+  foreach $path (sort keys (%dirtree))
+  {
+    if ($dirtree {$path} =~ /^DIR$/)
+    {
+      mkdir ("$basedir/$path", 0777)
+               || &error ("Couldn't mkdir $basedir/$path: $!\n", 1);
+    }
+    elsif ($dirtree {$path} =~ /^FILE:(.*)$/)
+    {
+      &create_file ("$basedir/$path", $1 . "\n");
+    }
+    elsif ($dirtree {$path} =~ /^LINK:(.*)$/)
+    {
+      symlink ("$basedir/$1", "$basedir/$path")
+        || &error ("Couldn't symlink $basedir/$path -> $basedir/$1: $!\n", 1);
+    }
+    else
+    {
+      &error ("Bogus dirtree type: \"$dirtree{$path}\"\n", 1);
+    }
+  }
+  if ($just_setup_tree)
+  {
+    die "Tree is setup...\n";
+  }
+}
+
+# compare a directory tree with an associative array in the format used
+# by create_dir_tree, above.
+# The first argument is the dir under which the structure should be found;
+# the second argument is the associative array.
+
+sub compare_dir_tree
+{
+  local ($basedir, %dirtree) = @_;
+  local ($path);
+  local ($i);
+  local ($bogus) = 0;
+  local ($contents);
+  local ($target);
+  local ($fulltarget);
+  local ($found);
+  local (@files);
+  local (@allfiles);
+
+  opendir (DIR, $basedir) || &error ("Couldn't open $basedir: $!\n", 1);
+  @allfiles = grep (!/^(\.\.?|CVS|RCS)$/, readdir (DIR) );
+  closedir (DIR);
+  if ($debug)
+  {
+    print "dirtree: (%dirtree)\n$basedir: (@allfiles)\n";
+  }
+
+  foreach $path (sort keys (%dirtree))
+  {
+    if ($debug)
+    {
+      print "Checking $path ($dirtree{$path}).\n";
+    }
+
+    $found = 0;
+    foreach $i (0 .. $#allfiles)
+    {
+      if ($allfiles[$i] eq $path)
+      {
+        splice (@allfiles, $i, 1);  # delete it
+        if ($debug)
+        {
+          print "     Zapped $path; files now (@allfiles).\n";
+        }
+        lstat ("$basedir/$path");
+        $found = 1;
+        last;
+      }
+    }
+
+    if (!$found)
+    {
+      print "compare_dir_tree: $path does not exist.\n";
+      $bogus = 1;
+      next;
+    }
+
+    if ($dirtree {$path} =~ /^DIR$/)
+    {
+      if (-d _ && opendir (DIR, "$basedir/$path") )
+      {
+        @files = readdir (DIR);
+        closedir (DIR);
+        @files = grep (!/^(\.\.?|CVS|RCS)$/ && ($_ = "$path/$_"), @files);
+        push (@allfiles, @files);
+        if ($debug)
+        {
+          print "     Read in $path; new files (@files).\n";
+        }
+      }
+      else
+      {
+        print "compare_dir_tree: $path is not a dir.\n";
+        $bogus = 1;
+      }
+    }
+    elsif ($dirtree {$path} =~ /^FILE:(.*)$/)
+    {
+      if (-l _ || !-f _)
+      {
+        print "compare_dir_tree: $path is not a file.\n";
+        $bogus = 1;
+        next;
+      }
+
+      if ($1 ne "*")
+      {
+        $contents = &read_file_into_string ("$basedir/$path");
+        if ($contents ne "$1\n")
+        {
+          print "compare_dir_tree: $path contains wrong stuff."
+              . "  Is:\n$contentsShould be:\n$1\n";
+          $bogus = 1;
+        }
+      }
+    }
+    elsif ($dirtree {$path} =~ /^LINK:(.*)$/)
+    {
+      $target = $1;
+      if (!-l _)
+      {
+        print "compare_dir_tree: $path is not a link.\n";
+        $bogus = 1;
+        next;
+      }
+
+      $contents = readlink ("$basedir/$path");
+      $contents =~ tr/>/\//;
+      $fulltarget = "$basedir/$target";
+      $fulltarget =~ tr/>/\//;
+      if (!($contents =~ /$fulltarget$/))
+      {
+        if ($debug)
+        {
+          $target = $fulltarget;
+        }
+        print "compare_dir_tree: $path should be link to $target, "
+            . "not $contents.\n";
+        $bogus = 1;
+      }
+    }
+    else
+    {
+      &error ("Bogus dirtree type: \"$dirtree{$path}\"\n", 1);
+    }
+  }
+
+  if ($debug)
+  {
+    print "leftovers: (@allfiles).\n";
+  }
+
+  foreach $file (@allfiles)
+  {
+    print "compare_dir_tree: $file should not exist.\n";
+    $bogus = 1;
+  }
+
+  return !$bogus;
+}
+
+# this subroutine generates the numeric suffix used to keep tmp filenames,
+# log filenames, etc., unique.  If the number passed in is 1, then a null
+# string is returned; otherwise, we return ".n", where n + 1 is the number
+# we were given.
+
+sub num_suffix
+{
+  local($num) = @_;
+
+  if (--$num > 0) {
+    return "$extext$num";
+  }
+
+  return "";
+}
+
+# This subroutine returns a log filename with a number appended to
+# the end corresponding to how many logfiles have been created in the
+# current running test.  An optional parameter may be passed (0 or 1).
+# If a 1 is passed, then it does NOT increment the logfile counter
+# and returns the name of the latest logfile.  If either no parameter
+# is passed at all or a 0 is passed, then the logfile counter is
+# incremented and the new name is returned.
+
+sub get_logfile
+{
+  local($no_increment) = @_;
+
+  $num_of_logfiles += !$no_increment;
+
+  return ($log_filename . &num_suffix ($num_of_logfiles));
+}
+
+# This subroutine returns a base (answer) filename with a number
+# appended to the end corresponding to how many logfiles (and thus
+# base files) have been created in the current running test.
+# NO PARAMETERS ARE PASSED TO THIS SUBROUTINE.
+
+sub get_basefile
+{
+  return ($base_filename . &num_suffix ($num_of_logfiles));
+}
+
+# This subroutine returns a difference filename with a number appended
+# to the end corresponding to how many logfiles (and thus diff files)
+# have been created in the current running test.
+
+sub get_difffile
+{
+  return ($diff_filename . &num_suffix ($num_of_logfiles));
+}
+
+# This subroutine returns a command filename with a number appended
+# to the end corresponding to how many logfiles (and thus command files)
+# have been created in the current running test.
+
+sub get_runfile
+{
+  return ($run_filename . &num_suffix ($num_of_logfiles));
+}
+
+# just like logfile, only a generic tmp filename for use by the test.
+# they are automatically cleaned up unless -keep was used, or the test fails.
+# Pass an argument of 1 to return the same filename as the previous call.
+
+sub get_tmpfile
+{
+  local($no_increment) = @_;
+
+  $num_of_tmpfiles += !$no_increment;
+
+  return ($tmp_filename . &num_suffix ($num_of_tmpfiles));
+}
+
+1;
diff --git a/src/kmk/variable.c b/src/kmk/variable.c
new file mode 100644
index 0000000..c79601d
--- /dev/null
+++ b/src/kmk/variable.c
@@ -0,0 +1,3475 @@
+/* Internals of variables for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <assert.h>
+
+#include "filedef.h"
+#include "dep.h"
+#include "job.h"
+#include "commands.h"
+#include "variable.h"
+#include "rule.h"
+#ifdef WINDOWS32
+#include "pathstuff.h"
+#endif
+#include "hash.h"
+#ifdef KMK
+# include "kbuild.h"
+# ifdef WINDOWS32
+#  include <Windows.h>
+# else
+#  include <sys/utsname.h>
+# endif
+#endif
+#ifdef CONFIG_WITH_STRCACHE2
+# include <stddef.h>
+#endif
+#ifdef CONFIG_WITH_COMPILER
+# include "kmk_cc_exec.h"
+#endif
+
+#ifdef KMK
+/** Gets the real variable if alias.  For use when looking up variables. */
+# define RESOLVE_ALIAS_VARIABLE(v) \
+  do { \
+    if ((v) != NULL && (v)->alias) \
+      { \
+        (v) = (struct variable *)(v)->value; \
+        assert ((v)->aliased); \
+        assert (!(v)->alias); \
+      } \
+  } while (0)
+#endif
+
+#ifdef KMK
+/* Incremented every time a variable is modified, so that target_environment
+   knows when to regenerate the table of exported global variables.  */
+static size_t global_variable_generation = 0;
+#endif
+
+/* Incremented every time we add or remove a global variable.  */
+static unsigned long variable_changenum;
+
+/* Chain of all pattern-specific variables.  */
+
+static struct pattern_var *pattern_vars;
+
+/* Pointer to the last struct in the pack of a specific size, from 1 to 255.*/
+
+static struct pattern_var *last_pattern_vars[256];
+
+/* Create a new pattern-specific variable struct. The new variable is
+   inserted into the PATTERN_VARS list in the shortest patterns first
+   order to support the shortest stem matching (the variables are
+   matched in the reverse order so the ones with the longest pattern
+   will be considered first). Variables with the same pattern length
+   are inserted in the definition order. */
+
+struct pattern_var *
+create_pattern_var (const char *target, const char *suffix)
+{
+  register unsigned int len = strlen (target);
+  register struct pattern_var *p = xmalloc (sizeof (struct pattern_var));
+
+  if (pattern_vars != 0)
+    {
+      if (len < 256 && last_pattern_vars[len] != 0)
+        {
+          p->next = last_pattern_vars[len]->next;
+          last_pattern_vars[len]->next = p;
+        }
+      else
+        {
+          /* Find the position where we can insert this variable. */
+          register struct pattern_var **v;
+
+          for (v = &pattern_vars; ; v = &(*v)->next)
+            {
+              /* Insert at the end of the pack so that patterns with the
+                 same length appear in the order they were defined .*/
+
+              if (*v == 0 || (*v)->len > len)
+                {
+                  p->next = *v;
+                  *v = p;
+                  break;
+                }
+            }
+        }
+    }
+  else
+    {
+      pattern_vars = p;
+      p->next = 0;
+    }
+
+  p->target = target;
+  p->len = len;
+  p->suffix = suffix + 1;
+
+  if (len < 256)
+    last_pattern_vars[len] = p;
+
+  return p;
+}
+
+/* Look up a target in the pattern-specific variable list.  */
+
+static struct pattern_var *
+lookup_pattern_var (struct pattern_var *start, const char *target)
+{
+  struct pattern_var *p;
+  unsigned int targlen = strlen (target);
+
+  for (p = start ? start->next : pattern_vars; p != 0; p = p->next)
+    {
+      const char *stem;
+      unsigned int stemlen;
+
+      if (p->len > targlen)
+        /* It can't possibly match.  */
+        continue;
+
+      /* From the lengths of the filename and the pattern parts,
+         find the stem: the part of the filename that matches the %.  */
+      stem = target + (p->suffix - p->target - 1);
+      stemlen = targlen - p->len + 1;
+
+      /* Compare the text in the pattern before the stem, if any.  */
+      if (stem > target && !strneq (p->target, target, stem - target))
+        continue;
+
+      /* Compare the text in the pattern after the stem, if any.
+         We could test simply using streq, but this way we compare the
+         first two characters immediately.  This saves time in the very
+         common case where the first character matches because it is a
+         period.  */
+      if (*p->suffix == stem[stemlen]
+          && (*p->suffix == '\0' || streq (&p->suffix[1], &stem[stemlen+1])))
+        break;
+    }
+
+  return p;
+}
+
+#ifdef CONFIG_WITH_STRCACHE2
+struct strcache2 variable_strcache;
+#endif
+
+/* Hash table of all global variable definitions.  */
+
+#ifndef CONFIG_WITH_STRCACHE2
+static unsigned long
+variable_hash_1 (const void *keyv)
+{
+  struct variable const *key = (struct variable const *) keyv;
+  return_STRING_N_HASH_1 (key->name, key->length);
+}
+
+static unsigned long
+variable_hash_2 (const void *keyv)
+{
+  struct variable const *key = (struct variable const *) keyv;
+  return_STRING_N_HASH_2 (key->name, key->length);
+}
+
+static int
+variable_hash_cmp (const void *xv, const void *yv)
+{
+  struct variable const *x = (struct variable const *) xv;
+  struct variable const *y = (struct variable const *) yv;
+  int result = x->length - y->length;
+  if (result)
+    return result;
+
+  return_STRING_N_COMPARE (x->name, y->name, x->length);
+}
+#endif /* !CONFIG_WITH_STRCACHE2 */
+
+#ifndef VARIABLE_BUCKETS
+# ifdef KMK /* Move to Makefile.kmk? (insanely high, but wtf, it gets the collitions down) */
+#  define VARIABLE_BUCKETS              65535
+# else  /*!KMK*/
+#define VARIABLE_BUCKETS                523
+# endif /*!KMK*/
+#endif
+#ifndef PERFILE_VARIABLE_BUCKETS
+# ifdef KMK /* Move to Makefile.kmk? */
+#  define PERFILE_VARIABLE_BUCKETS      127
+# else
+#define PERFILE_VARIABLE_BUCKETS        23
+# endif
+#endif
+#ifndef SMALL_SCOPE_VARIABLE_BUCKETS
+# ifdef KMK /* Move to Makefile.kmk? */
+#  define SMALL_SCOPE_VARIABLE_BUCKETS  63
+# else
+#define SMALL_SCOPE_VARIABLE_BUCKETS    13
+# endif
+#endif
+#ifndef ENVIRONMENT_VARIABLE_BUCKETS    /* added by bird. */
+# define ENVIRONMENT_VARIABLE_BUCKETS   256
+#endif
+
+
+#ifdef KMK /* Drop the 'static' */
+struct variable_set global_variable_set;
+struct variable_set_list global_setlist
+#else
+static struct variable_set global_variable_set;
+static struct variable_set_list global_setlist
+#endif
+  = { 0, &global_variable_set, 0 };
+struct variable_set_list *current_variable_set_list = &global_setlist;
+
+/* Implement variables.  */
+
+void
+init_hash_global_variable_set (void)
+{
+#ifndef CONFIG_WITH_STRCACHE2
+  hash_init (&global_variable_set.table, VARIABLE_BUCKETS,
+             variable_hash_1, variable_hash_2, variable_hash_cmp);
+#else  /* CONFIG_WITH_STRCACHE2 */
+  strcache2_init (&variable_strcache, "variable", 262144, 0, 0, 0);
+  hash_init_strcached (&global_variable_set.table, VARIABLE_BUCKETS,
+                       &variable_strcache, offsetof (struct variable, name));
+#endif /* CONFIG_WITH_STRCACHE2 */
+}
+
+/* Define variable named NAME with value VALUE in SET.  VALUE is copied.
+   LENGTH is the length of NAME, which does not need to be null-terminated.
+   ORIGIN specifies the origin of the variable (makefile, command line
+   or environment).
+   If RECURSIVE is nonzero a flag is set in the variable saying
+   that it should be recursively re-expanded.  */
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+struct variable *
+define_variable_in_set (const char *name, unsigned int length,
+                        const char *value, unsigned int value_len,
+                        int duplicate_value, enum variable_origin origin,
+                        int recursive, struct variable_set *set,
+                        const floc *flocp)
+#else
+struct variable *
+define_variable_in_set (const char *name, unsigned int length,
+                        const char *value, enum variable_origin origin,
+                        int recursive, struct variable_set *set,
+                        const floc *flocp)
+#endif
+{
+  struct variable *v;
+  struct variable **var_slot;
+  struct variable var_key;
+
+#ifdef KMK
+  if (set == NULL || set == &global_variable_set)
+    global_variable_generation++;
+#endif
+
+  if (env_overrides && origin == o_env)
+    origin = o_env_override;
+
+#ifndef KMK
+  if (set == NULL)
+    set = &global_variable_set;
+#else /* KMK */
+  /* Intercept kBuild object variable definitions. */
+  if (name[0] == '[' && length > 3)
+    {
+      v = try_define_kbuild_object_variable_via_accessor (name, length,
+                                                          value, value_len, duplicate_value,
+                                                          origin, recursive, flocp);
+      if (v != VAR_NOT_KBUILD_ACCESSOR)
+        return v;
+    }
+  if (set == NULL)
+    {
+      if (g_pTopKbEvalData)
+        return define_kbuild_object_variable_in_top_obj (name, length,
+                                                         value, value_len, duplicate_value,
+                                                         origin, recursive, flocp);
+      set = &global_variable_set;
+    }
+#endif /* KMK */
+
+#ifndef CONFIG_WITH_STRCACHE2
+  var_key.name = (char *) name;
+  var_key.length = length;
+  var_slot = (struct variable **) hash_find_slot (&set->table, &var_key);
+  v = *var_slot;
+
+#ifdef VMS
+  /* VMS does not populate envp[] with DCL symbols and logical names which
+     historically are mapped to environent variables.
+     If the variable is not yet defined, then we need to check if getenv()
+     can find it.  Do not do this for origin == o_env to avoid infinte
+     recursion */
+  if (HASH_VACANT (v) && (origin != o_env))
+    {
+      struct variable * vms_variable;
+      char * vname = alloca (length + 1);
+      char * vvalue;
+
+      strncpy (vname, name, length);
+      vvalue = getenv(vname);
+
+      /* Values starting with '$' are probably foreign commands.
+         We want to treat them as Shell aliases and not look them up here */
+      if ((vvalue != NULL) && (vvalue[0] != '$'))
+        {
+          vms_variable =  lookup_variable(name, length);
+          /* Refresh the slot */
+          var_slot = (struct variable **) hash_find_slot (&set->table,
+                                                          &var_key);
+          v = *var_slot;
+        }
+    }
+#endif
+
+  /* if (env_overrides && origin == o_env)
+    origin = o_env_override; - bird moved this up */
+
+#else  /* CONFIG_WITH_STRCACHE2 */
+  name = strcache2_add (&variable_strcache, name, length);
+  if (   set != &global_variable_set
+      || !(v = strcache2_get_user_val (&variable_strcache, name)))
+    {
+      var_key.name = name;
+      var_key.length = length;
+      var_slot = (struct variable **) hash_find_slot_strcached (&set->table, &var_key);
+      v = *var_slot;
+    }
+  else
+    {
+      assert (!v || (v->name == name && !HASH_VACANT (v)));
+      var_slot = 0;
+    }
+#endif /* CONFIG_WITH_STRCACHE2 */
+  if (! HASH_VACANT (v))
+    {
+#ifdef KMK
+      RESOLVE_ALIAS_VARIABLE(v);
+#endif
+      if (env_overrides && v->origin == o_env)
+        /* V came from in the environment.  Since it was defined
+           before the switches were parsed, it wasn't affected by -e.  */
+        v->origin = o_env_override;
+
+      /* A variable of this name is already defined.
+         If the old definition is from a stronger source
+         than this one, don't redefine it.  */
+      if ((int) origin >= (int) v->origin)
+        {
+#ifdef CONFIG_WITH_VALUE_LENGTH
+          if (value_len == ~0U)
+            value_len = strlen (value);
+          else
+            assert (value_len == strlen (value));
+          if (!duplicate_value || duplicate_value == -1)
+            {
+# ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+              if (v->value != 0 && !v->rdonly_val)
+                  free (v->value);
+              v->rdonly_val = duplicate_value == -1;
+              v->value = (char *) value;
+              v->value_alloc_len = 0;
+# else
+              if (v->value != 0)
+                free (v->value);
+              v->value = (char *) value;
+              v->value_alloc_len = value_len + 1;
+# endif
+            }
+          else
+            {
+              if (v->value_alloc_len <= value_len)
+                {
+# ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+                  if (v->rdonly_val)
+                    v->rdonly_val = 0;
+                  else
+# endif
+                    free (v->value);
+                  v->value_alloc_len = VAR_ALIGN_VALUE_ALLOC (value_len + 1);
+                  v->value = xmalloc (v->value_alloc_len);
+                  MAKE_STATS_2(v->reallocs++);
+                }
+              memcpy (v->value, value, value_len + 1);
+            }
+          v->value_length = value_len;
+#else  /* !CONFIG_WITH_VALUE_LENGTH */
+          free (v->value);
+          v->value = xstrdup (value);
+#endif /* !CONFIG_WITH_VALUE_LENGTH */
+          if (flocp != 0)
+            v->fileinfo = *flocp;
+          else
+            v->fileinfo.filenm = 0;
+          v->origin = origin;
+          v->recursive = recursive;
+          VARIABLE_CHANGED (v);
+        }
+      return v;
+    }
+
+  /* Create a new variable definition and add it to the hash table.  */
+
+#ifndef CONFIG_WITH_ALLOC_CACHES
+  v = xmalloc (sizeof (struct variable));
+#else
+  v = alloccache_alloc (&variable_cache);
+#endif
+#ifndef CONFIG_WITH_STRCACHE2
+  v->name = xstrndup (name, length);
+#else
+  v->name = name; /* already cached. */
+#endif
+  v->length = length;
+  hash_insert_at (&set->table, v, var_slot);
+  if (set == &global_variable_set)
+    ++variable_changenum;
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  if (value_len == ~0U)
+    value_len = strlen (value);
+  else
+    assert (value_len == strlen (value));
+  v->value_length = value_len;
+  if (!duplicate_value || duplicate_value == -1)
+    {
+# ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+      v->rdonly_val = duplicate_value == -1;
+      v->value_alloc_len = v->rdonly_val ? 0 : value_len + 1;
+# endif
+      v->value = (char *)value;
+    }
+  else
+    {
+# ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+      v->rdonly_val = 0;
+# endif
+      v->value_alloc_len = VAR_ALIGN_VALUE_ALLOC (value_len + 1);
+      v->value = xmalloc (v->value_alloc_len);
+      memcpy (v->value, value, value_len + 1);
+    }
+#else  /* !CONFIG_WITH_VALUE_LENGTH */
+  v->value = xstrdup (value);
+#endif /* !CONFIG_WITH_VALUE_LENGTH */
+  if (flocp != 0)
+    v->fileinfo = *flocp;
+  else
+    v->fileinfo.filenm = 0;
+  v->origin = origin;
+  v->recursive = recursive;
+  v->special = 0;
+  v->expanding = 0;
+  v->exp_count = 0;
+  v->per_target = 0;
+  v->append = 0;
+  v->private_var = 0;
+#ifdef KMK
+  v->alias = 0;
+  v->aliased = 0;
+#endif
+  v->export = v_default;
+#ifdef CONFIG_WITH_COMPILER
+  v->recursive_without_dollar = 0;
+  v->evalprog = 0;
+  v->expandprog = 0;
+  v->evalval_count = 0;
+  v->expand_count = 0;
+#else
+  MAKE_STATS_2(v->expand_count = 0);
+  MAKE_STATS_2(v->evalval_count = 0);
+#endif
+  MAKE_STATS_2(v->changes = 0);
+  MAKE_STATS_2(v->reallocs = 0);
+  MAKE_STATS_2(v->references = 0);
+  MAKE_STATS_2(v->cTicksEvalVal = 0);
+
+  v->exportable = 1;
+  if (*name != '_' && (*name < 'A' || *name > 'Z')
+      && (*name < 'a' || *name > 'z'))
+    v->exportable = 0;
+  else
+    {
+      for (++name; *name != '\0'; ++name)
+        if (*name != '_' && (*name < 'a' || *name > 'z')
+            && (*name < 'A' || *name > 'Z') && !ISDIGIT(*name))
+          break;
+
+      if (*name != '\0')
+        v->exportable = 0;
+    }
+
+#ifdef CONFIG_WITH_STRCACHE2
+  /* If it's the global set, remember the variable. */
+  if (set == &global_variable_set)
+    strcache2_set_user_val (&variable_strcache, v->name, v);
+#endif
+  return v;
+}
+
+
+/* Undefine variable named NAME in SET. LENGTH is the length of NAME, which
+   does not need to be null-terminated. ORIGIN specifies the origin of the
+   variable (makefile, command line or environment). */
+
+static void
+free_variable_name_and_value (const void *item)
+{
+  struct variable *v = (struct variable *) item;
+#ifndef CONFIG_WITH_STRCACHE2
+  free (v->name);
+#endif
+#ifdef CONFIG_WITH_COMPILER
+  if (v->evalprog || v->expandprog)
+    kmk_cc_variable_deleted (v);
+#endif
+#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+  if (!v->rdonly_val)
+#endif
+    free (v->value);
+}
+
+void
+free_variable_set (struct variable_set_list *list)
+{
+  hash_map (&list->set->table, free_variable_name_and_value);
+#ifndef CONFIG_WITH_ALLOC_CACHES
+  hash_free (&list->set->table, 1);
+  free (list->set);
+  free (list);
+#else
+  hash_free_cached (&list->set->table, 1, &variable_cache);
+  alloccache_free (&variable_set_cache, list->set);
+  alloccache_free (&variable_set_list_cache, list);
+#endif
+}
+
+void
+undefine_variable_in_set (const char *name, unsigned int length,
+                          enum variable_origin origin,
+                          struct variable_set *set)
+{
+  struct variable *v;
+  struct variable **var_slot;
+  struct variable var_key;
+
+  if (set == NULL)
+    set = &global_variable_set;
+
+#ifndef CONFIG_WITH_STRCACHE2
+  var_key.name = (char *) name;
+  var_key.length = length;
+  var_slot = (struct variable **) hash_find_slot (&set->table, &var_key);
+#else
+  var_key.name = strcache2_lookup(&variable_strcache, name, length);
+  if (!var_key.name)
+    return;
+  var_key.length = length;
+  var_slot = (struct variable **) hash_find_slot_strcached (&set->table, &var_key);
+#endif
+#ifdef KMK
+  if (set == &global_variable_set)
+    global_variable_generation++;
+#endif
+
+  if (env_overrides && origin == o_env)
+    origin = o_env_override;
+
+  v = *var_slot;
+  if (! HASH_VACANT (v))
+    {
+#ifdef KMK
+      if (v->aliased || v->alias)
+        {
+           if (v->aliased)
+             OS (error, NULL, _("Cannot undefine the aliased variable '%s'"), v->name);
+           else
+             OS (error, NULL, _("Cannot undefine the variable alias '%s'"), v->name);
+          return;
+        }
+#endif
+
+      if (env_overrides && v->origin == o_env)
+        /* V came from in the environment.  Since it was defined
+           before the switches were parsed, it wasn't affected by -e.  */
+        v->origin = o_env_override;
+
+      /* Undefine only if this undefinition is from an equal or stronger
+         source than the variable definition.  */
+      if ((int) origin >= (int) v->origin)
+        {
+          hash_delete_at (&set->table, var_slot);
+#ifdef CONFIG_WITH_STRCACHE2
+          if (set == &global_variable_set)
+            strcache2_set_user_val (&variable_strcache, v->name, NULL);
+#endif
+          free_variable_name_and_value (v);
+#ifndef CONFIG_WITH_ALLOC_CACHES
+          free (v);
+#else
+          alloccache_free (&variable_cache, v);
+#endif
+          if (set == &global_variable_set)
+            ++variable_changenum;
+        }
+    }
+}
+
+#ifdef KMK
+/* Define variable named NAME as an alias of the variable TARGET.
+   SET defaults to the global set if NULL. FLOCP is just for completeness. */
+
+struct variable *
+define_variable_alias_in_set (const char *name, unsigned int length,
+                              struct variable *target, enum variable_origin origin,
+                              struct variable_set *set, const floc *flocp)
+{
+  struct variable     *v;
+  struct variable     **var_slot;
+
+#ifdef KMK
+  if (set == NULL || set == &global_variable_set)
+    global_variable_generation++;
+#endif
+
+  /* Look it up the hash table slot for it. */
+  name = strcache2_add (&variable_strcache, name, length);
+  if (   set != &global_variable_set
+      || !(v = strcache2_get_user_val (&variable_strcache, name)))
+    {
+      struct variable var_key;
+
+      var_key.name = name;
+      var_key.length = length;
+      var_slot = (struct variable **) hash_find_slot_strcached (&set->table, &var_key);
+      v = *var_slot;
+    }
+  else
+    {
+      assert (!v || (v->name == name && !HASH_VACANT (v)));
+      var_slot = 0;
+    }
+  if (! HASH_VACANT (v))
+    {
+      /* A variable of this name is already defined.
+         If the old definition is from a stronger source
+         than this one, don't redefine it.  */
+
+      if (env_overrides && v->origin == o_env)
+        /* V came from in the environment.  Since it was defined
+           before the switches were parsed, it wasn't affected by -e.  */
+        v->origin = o_env_override;
+
+      if ((int) origin < (int) v->origin)
+        return v;
+
+      if (v->value != 0 && !v->rdonly_val)
+          free (v->value);
+      VARIABLE_CHANGED (v);
+    }
+  else
+    {
+      /* Create a new variable definition and add it to the hash table.  */
+      v = alloccache_alloc (&variable_cache);
+      v->name = name; /* already cached. */
+      v->length = length;
+      hash_insert_at (&set->table, v, var_slot);
+      v->special = 0;
+      v->expanding = 0;
+      v->exp_count = 0;
+      v->per_target = 0;
+      v->append = 0;
+      v->private_var = 0;
+      v->aliased = 0;
+      v->export = v_default;
+#ifdef CONFIG_WITH_COMPILER
+      v->recursive_without_dollar = 0;
+      v->evalprog = 0;
+      v->expandprog = 0;
+      v->evalval_count = 0;
+      v->expand_count = 0;
+#else
+      MAKE_STATS_2(v->expand_count = 0);
+      MAKE_STATS_2(v->evalval_count = 0);
+#endif
+      MAKE_STATS_2(v->changes = 0);
+      MAKE_STATS_2(v->reallocs = 0);
+      MAKE_STATS_2(v->references = 0);
+      MAKE_STATS_2(v->cTicksEvalVal = 0);
+      v->exportable = 1;
+      if (*name != '_' && (*name < 'A' || *name > 'Z')
+          && (*name < 'a' || *name > 'z'))
+        v->exportable = 0;
+      else
+        {
+          for (++name; *name != '\0'; ++name)
+            if (*name != '_' && (*name < 'a' || *name > 'z')
+                && (*name < 'A' || *name > 'Z') && !ISDIGIT(*name))
+              break;
+
+          if (*name != '\0')
+            v->exportable = 0;
+        }
+
+     /* If it's the global set, remember the variable. */
+     if (set == &global_variable_set)
+       strcache2_set_user_val (&variable_strcache, v->name, v);
+    }
+
+  /* Common variable setup. */
+  v->alias = 1;
+  v->rdonly_val = 1;
+  v->value = (char *)target;
+  v->value_length = sizeof(*target); /* Non-zero to provoke trouble. */
+  v->value_alloc_len = sizeof(*target);
+  if (flocp != 0)
+    v->fileinfo = *flocp;
+  else
+    v->fileinfo.filenm = 0;
+  v->origin = origin;
+  v->recursive = 0;
+
+  /* Mark the target as aliased. */
+  target->aliased = 1;
+
+  return v;
+}
+#endif /* KMK */
+
+/* If the variable passed in is "special", handle its special nature.
+   Currently there are two such variables, both used for introspection:
+   .VARIABLES expands to a list of all the variables defined in this instance
+   of make.
+   .TARGETS expands to a list of all the targets defined in this
+   instance of make.
+   Returns the variable reference passed in.  */
+
+#define EXPANSION_INCREMENT(_l)  ((((_l) / 500) + 1) * 500)
+
+static struct variable *
+lookup_special_var (struct variable *var)
+{
+  static unsigned long last_changenum = 0;
+
+
+  /* This one actually turns out to be very hard, due to the way the parser
+     records targets.  The way it works is that target information is collected
+     internally until make knows the target is completely specified.  It unitl
+     it sees that some new construct (a new target or variable) is defined that
+     it knows the previous one is done.  In short, this means that if you do
+     this:
+
+       all:
+
+       TARGS := $(.TARGETS)
+
+     then $(TARGS) won't contain "all", because it's not until after the
+     variable is created that the previous target is completed.
+
+     Changing this would be a major pain.  I think a less complex way to do it
+     would be to pre-define the target files as soon as the first line is
+     parsed, then come back and do the rest of the definition as now.  That
+     would allow $(.TARGETS) to be correct without a major change to the way
+     the parser works.
+
+  if (streq (var->name, ".TARGETS"))
+    var->value = build_target_list (var->value);
+  else
+  */
+
+  if (variable_changenum != last_changenum && streq (var->name, ".VARIABLES"))
+    {
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      unsigned long max = EXPANSION_INCREMENT (strlen (var->value));
+#else
+      unsigned long max = EXPANSION_INCREMENT (var->value_length);
+#endif
+      unsigned long len;
+      char *p;
+      struct variable **vp = (struct variable **) global_variable_set.table.ht_vec;
+      struct variable **end = &vp[global_variable_set.table.ht_size];
+
+      /* Make sure we have at least MAX bytes in the allocated buffer.  */
+      var->value = xrealloc (var->value, max);
+      MAKE_STATS_2(var->reallocs++);
+
+      /* Walk through the hash of variables, constructing a list of names.  */
+      p = var->value;
+      len = 0;
+      for (; vp < end; ++vp)
+        if (!HASH_VACANT (*vp))
+          {
+            struct variable *v = *vp;
+            int l = v->length;
+
+            len += l + 1;
+            if (len > max)
+              {
+                unsigned long off = p - var->value;
+
+                max += EXPANSION_INCREMENT (l + 1);
+                var->value = xrealloc (var->value, max);
+                p = &var->value[off];
+                MAKE_STATS_2(var->reallocs++);
+              }
+
+            memcpy (p, v->name, l);
+            p += l;
+            *(p++) = ' ';
+          }
+      *(p-1) = '\0';
+#ifdef CONFIG_WITH_VALUE_LENGTH
+      var->value_length = p - var->value - 1;
+      var->value_alloc_len = max;
+#endif
+      VARIABLE_CHANGED (var);
+
+      /* Remember the current variable change number.  */
+      last_changenum = variable_changenum;
+    }
+
+  return var;
+}
+
+
+#if 0 /*FIX THIS - def KMK*/ /* bird: speed */
+MY_INLINE struct variable *
+lookup_cached_variable (const char *name)
+{
+  const struct variable_set_list *setlist = current_variable_set_list;
+  struct hash_table *ht;
+  unsigned int hash_1;
+  unsigned int hash_2;
+  unsigned int idx;
+  struct variable *v;
+
+  /* first set, first entry, both unrolled. */
+
+  if (setlist->set == &global_variable_set)
+    {
+      v = (struct variable *) strcache2_get_user_val (&variable_strcache, name);
+      if (MY_PREDICT_TRUE (v))
+        return MY_PREDICT_FALSE (v->special) ? lookup_special_var (v) : v;
+      assert (setlist->next == 0);
+      return 0;
+    }
+
+  hash_1 = strcache2_calc_ptr_hash (&variable_strcache, name);
+  ht = &setlist->set->table;
+  MAKE_STATS (ht->ht_lookups++);
+  idx = hash_1 & (ht->ht_size - 1);
+  v = ht->ht_vec[idx];
+  if (v != 0)
+    {
+      if (   (void *)v != hash_deleted_item
+          && v->name == name)
+        return MY_PREDICT_FALSE (v->special) ? lookup_special_var (v) : v;
+
+      /* the rest of the loop  */
+      hash_2 = strcache2_get_hash (&variable_strcache, name) | 1;
+      for (;;)
+        {
+          idx += hash_2;
+          idx &= (ht->ht_size - 1);
+          v = (struct variable *) ht->ht_vec[idx];
+          MAKE_STATS (ht->ht_collisions++); /* there are hardly any deletions, so don't bother with not counting deleted clashes. */
+
+          if (v == 0)
+            break;
+          if (   (void *)v != hash_deleted_item
+              && v->name == name)
+            return MY_PREDICT_FALSE (v->special) ? lookup_special_var (v) : v;
+        } /* inner collision loop */
+    }
+  else
+    hash_2 = strcache2_get_hash (&variable_strcache, name) | 1;
+
+
+  /* The other sets, if any. */
+
+  setlist = setlist->next;
+  while (setlist)
+    {
+      if (setlist->set == &global_variable_set)
+        {
+          v = (struct variable *) strcache2_get_user_val (&variable_strcache, name);
+          if (MY_PREDICT_TRUE (v))
+            return MY_PREDICT_FALSE (v->special) ? lookup_special_var (v) : v;
+          assert (setlist->next == 0);
+          return 0;
+        }
+
+      /* first iteration unrolled */
+      ht = &setlist->set->table;
+      MAKE_STATS (ht->ht_lookups++);
+      idx = hash_1 & (ht->ht_size - 1);
+      v = ht->ht_vec[idx];
+      if (v != 0)
+        {
+          if (   (void *)v != hash_deleted_item
+              && v->name == name)
+            return MY_PREDICT_FALSE (v->special) ? lookup_special_var (v) : v;
+
+          /* the rest of the loop  */
+          for (;;)
+            {
+              idx += hash_2;
+              idx &= (ht->ht_size - 1);
+              v = (struct variable *) ht->ht_vec[idx];
+              MAKE_STATS (ht->ht_collisions++); /* see reason above */
+
+              if (v == 0)
+                break;
+              if (   (void *)v != hash_deleted_item
+                  && v->name == name)
+                return MY_PREDICT_FALSE (v->special) ? lookup_special_var (v) : v;
+            } /* inner collision loop */
+        }
+
+      /* next */
+      setlist = setlist->next;
+    }
+
+  return 0;
+}
+
+# ifndef NDEBUG
+struct variable *
+lookup_variable_for_assert (const char *name, unsigned int length)
+{
+  const struct variable_set_list *setlist;
+  struct variable var_key;
+  var_key.name = name;
+  var_key.length = length;
+
+  for (setlist = current_variable_set_list;
+       setlist != 0; setlist = setlist->next)
+    {
+      struct variable *v;
+      v = (struct variable *) hash_find_item_strcached (&setlist->set->table, &var_key);
+      if (v)
+        return MY_PREDICT_FALSE (v->special) ? lookup_special_var (v) : v;
+    }
+  return 0;
+}
+# endif  /* !NDEBUG */
+#endif /* KMK - need for speed */
+
+/* Lookup a variable whose name is a string starting at NAME
+   and with LENGTH chars.  NAME need not be null-terminated.
+   Returns address of the 'struct variable' containing all info
+   on the variable, or nil if no such variable is defined.  */
+
+struct variable *
+lookup_variable (const char *name, unsigned int length)
+{
+#if 1 /*FIX THIS - ndef KMK*/
+  const struct variable_set_list *setlist;
+  struct variable var_key;
+#else /* KMK */
+  struct variable *v;
+#endif /* KMK */
+  int is_parent = 0;
+#ifdef CONFIG_WITH_STRCACHE2
+  const char *cached_name;
+#endif
+
+# ifdef KMK
+  /* Check for kBuild-define- local variable accesses and handle these first. */
+  if (length > 3 && name[0] == '[')
+    {
+      struct variable *v = lookup_kbuild_object_variable_accessor(name, length);
+      if (v != VAR_NOT_KBUILD_ACCESSOR)
+        {
+          MAKE_STATS_2 (v->references++);
+          return v;
+        }
+    }
+# endif
+
+#ifdef CONFIG_WITH_STRCACHE2
+  /* lookup the name in the string case, if it's not there it won't
+     be in any of the sets either. */
+  cached_name = strcache2_lookup (&variable_strcache, name, length);
+  if (!cached_name)
+    return NULL;
+  name = cached_name;
+#endif /* CONFIG_WITH_STRCACHE2 */
+#if 1  /*FIX THIS - ndef KMK */
+
+  var_key.name = (char *) name;
+  var_key.length = length;
+
+  for (setlist = current_variable_set_list;
+       setlist != 0; setlist = setlist->next)
+    {
+      const struct variable_set *set = setlist->set;
+      struct variable *v;
+
+# ifndef CONFIG_WITH_STRCACHE2
+      v = (struct variable *) hash_find_item ((struct hash_table *) &set->table, &var_key);
+# else  /* CONFIG_WITH_STRCACHE2 */
+      v = (struct variable *) hash_find_item_strcached ((struct hash_table *) &set->table, &var_key);
+# endif /* CONFIG_WITH_STRCACHE2 */
+      if (v && (!is_parent || !v->private_var))
+        {
+# ifdef KMK
+          RESOLVE_ALIAS_VARIABLE(v);
+# endif
+          MAKE_STATS_2 (v->references++);
+          return v->special ? lookup_special_var (v) : v;
+        }
+
+      is_parent |= setlist->next_is_parent;
+    }
+
+#else  /* KMK - need for speed */
+
+  v = lookup_cached_variable (name);
+  assert (lookup_variable_for_assert(name, length) == v);
+#ifdef VMS
+  if (v)
+#endif
+    return v;
+#endif /* KMK - need for speed */
+#ifdef VMS
+  /* VMS does not populate envp[] with DCL symbols and logical names which
+     historically are mapped to enviroment varables and returned by getenv() */
+  {
+    char *vname = alloca (length + 1);
+    char *value;
+    strncpy (vname, name, length);
+    vname[length] = 0;
+    value = getenv (vname);
+    if (value != 0)
+      {
+        char *sptr;
+        int scnt;
+
+        sptr = value;
+        scnt = 0;
+
+        while ((sptr = strchr (sptr, '$')))
+          {
+            scnt++;
+            sptr++;
+          }
+
+        if (scnt > 0)
+          {
+            char *nvalue;
+            char *nptr;
+
+            nvalue = alloca (strlen (value) + scnt + 1);
+            sptr = value;
+            nptr = nvalue;
+
+            while (*sptr)
+              {
+                if (*sptr == '$')
+                  {
+                    *nptr++ = '$';
+                    *nptr++ = '$';
+                  }
+                else
+                  {
+                    *nptr++ = *sptr;
+                  }
+                sptr++;
+              }
+
+            *nptr = '\0';
+            return define_variable (vname, length, nvalue, o_env, 1);
+
+          }
+
+        return define_variable (vname, length, value, o_env, 1);
+      }
+  }
+#endif /* VMS */
+
+  return 0;
+}
+
+#ifdef CONFIG_WITH_STRCACHE2
+/* Alternative version of lookup_variable that takes a name that's already in
+   the variable string cache. */
+struct variable *
+lookup_variable_strcached (const char *name)
+{
+  struct variable *v;
+#if 1 /*FIX THIS - ndef KMK*/
+  const struct variable_set_list *setlist;
+  struct variable var_key;
+#endif /* KMK */
+  int is_parent = 0;
+
+#ifndef NDEBUG
+  strcache2_verify_entry (&variable_strcache, name);
+#endif
+
+#ifdef KMK
+  /* Check for kBuild-define- local variable accesses and handle these first. */
+  if (strcache2_get_len(&variable_strcache, name) > 3 && name[0] == '[')
+    {
+      v = lookup_kbuild_object_variable_accessor(name, strcache2_get_len(&variable_strcache, name));
+      if (v != VAR_NOT_KBUILD_ACCESSOR)
+        {
+          MAKE_STATS_2 (v->references++);
+          return v;
+        }
+    }
+#endif
+
+#if 1  /*FIX THIS - ndef KMK */
+
+  var_key.name = (char *) name;
+  var_key.length = strcache2_get_len(&variable_strcache, name);
+
+  for (setlist = current_variable_set_list;
+       setlist != 0; setlist = setlist->next)
+    {
+      const struct variable_set *set = setlist->set;
+
+      v = (struct variable *) hash_find_item_strcached ((struct hash_table *) &set->table, &var_key);
+      if (v && (!is_parent || !v->private_var))
+        {
+# ifdef KMK
+          RESOLVE_ALIAS_VARIABLE(v);
+# endif
+          MAKE_STATS_2 (v->references++);
+	   return v->special ? lookup_special_var (v) : v;
+        }
+
+      is_parent |= setlist->next_is_parent;
+    }
+
+#else  /* KMK - need for speed */
+
+  v = lookup_cached_variable (name);
+  assert (lookup_variable_for_assert(name, length) == v);
+#ifdef VMS
+  if (v)
+#endif
+    return v;
+#endif /* KMK - need for speed */
+#ifdef VMS
+# error "Port me (split out the relevant code from lookup_varaible and call it)"
+#endif
+  return 0;
+}
+#endif
+
+
+/* Lookup a variable whose name is a string starting at NAME
+   and with LENGTH chars in set SET.  NAME need not be null-terminated.
+   Returns address of the 'struct variable' containing all info
+   on the variable, or nil if no such variable is defined.  */
+
+struct variable *
+lookup_variable_in_set (const char *name, unsigned int length,
+                        const struct variable_set *set)
+{
+  struct variable var_key;
+#ifndef CONFIG_WITH_STRCACHE2
+  var_key.name = (char *) name;
+  var_key.length = length;
+
+  return (struct variable *) hash_find_item ((struct hash_table *) &set->table, &var_key);
+#else  /* CONFIG_WITH_STRCACHE2 */
+  const char *cached_name;
+  struct variable *v;
+
+# ifdef KMK
+  /* Check for kBuild-define- local variable accesses and handle these first. */
+  if (length > 3 && name[0] == '[' && set == &global_variable_set)
+    {
+      v = lookup_kbuild_object_variable_accessor(name, length);
+      if (v != VAR_NOT_KBUILD_ACCESSOR)
+        {
+          RESOLVE_ALIAS_VARIABLE(v);
+          MAKE_STATS_2 (v->references++);
+          return v;
+        }
+    }
+# endif
+
+  /* lookup the name in the string case, if it's not there it won't
+     be in any of the sets either.  Optimize lookups in the global set. */
+  cached_name = strcache2_lookup(&variable_strcache, name, length);
+  if (!cached_name)
+    return NULL;
+
+  if (set == &global_variable_set)
+    {
+      v = strcache2_get_user_val (&variable_strcache, cached_name);
+      assert (!v || v->name == cached_name);
+    }
+  else
+    {
+      var_key.name = cached_name;
+      var_key.length = length;
+
+      v = (struct variable *) hash_find_item_strcached (
+        (struct hash_table *) &set->table, &var_key);
+    }
+# ifdef KMK
+  RESOLVE_ALIAS_VARIABLE(v);
+# endif
+  MAKE_STATS_2 (if (v) v->references++);
+  return v;
+#endif /* CONFIG_WITH_STRCACHE2 */
+}
+
+/* Initialize FILE's variable set list.  If FILE already has a variable set
+   list, the topmost variable set is left intact, but the the rest of the
+   chain is replaced with FILE->parent's setlist.  If FILE is a double-colon
+   rule, then we will use the "root" double-colon target's variable set as the
+   parent of FILE's variable set.
+
+   If we're READING a makefile, don't do the pattern variable search now,
+   since the pattern variable might not have been defined yet.  */
+
+void
+initialize_file_variables (struct file *file, int reading)
+{
+  struct variable_set_list *l = file->variables;
+
+  if (l == 0)
+    {
+#ifndef CONFIG_WITH_ALLOC_CACHES
+      l = (struct variable_set_list *)
+        xmalloc (sizeof (struct variable_set_list));
+      l->set = xmalloc (sizeof (struct variable_set));
+#else  /* CONFIG_WITH_ALLOC_CACHES */
+      l = (struct variable_set_list *)
+        alloccache_alloc (&variable_set_list_cache);
+      l->set = (struct variable_set *)
+        alloccache_alloc (&variable_set_cache);
+#endif /* CONFIG_WITH_ALLOC_CACHES */
+#ifndef CONFIG_WITH_STRCACHE2
+      hash_init (&l->set->table, PERFILE_VARIABLE_BUCKETS,
+                 variable_hash_1, variable_hash_2, variable_hash_cmp);
+#else  /* CONFIG_WITH_STRCACHE2 */
+      hash_init_strcached (&l->set->table, PERFILE_VARIABLE_BUCKETS,
+                           &variable_strcache, offsetof (struct variable, name));
+#endif /* CONFIG_WITH_STRCACHE2 */
+      file->variables = l;
+    }
+
+  /* If this is a double-colon, then our "parent" is the "root" target for
+     this double-colon rule.  Since that rule has the same name, parent,
+     etc. we can just use its variables as the "next" for ours.  */
+
+  if (file->double_colon && file->double_colon != file)
+    {
+      initialize_file_variables (file->double_colon, reading);
+      l->next = file->double_colon->variables;
+      l->next_is_parent = 0;
+      return;
+    }
+
+  if (file->parent == 0)
+    l->next = &global_setlist;
+  else
+    {
+      initialize_file_variables (file->parent, reading);
+      l->next = file->parent->variables;
+    }
+  l->next_is_parent = 1;
+
+  /* If we're not reading makefiles and we haven't looked yet, see if
+     we can find pattern variables for this target.  */
+
+  if (!reading && !file->pat_searched)
+    {
+      struct pattern_var *p;
+
+      p = lookup_pattern_var (0, file->name);
+      if (p != 0)
+        {
+          struct variable_set_list *global = current_variable_set_list;
+
+          /* We found at least one.  Set up a new variable set to accumulate
+             all the pattern variables that match this target.  */
+
+          file->pat_variables = create_new_variable_set ();
+          current_variable_set_list = file->pat_variables;
+
+          do
+            {
+              /* We found one, so insert it into the set.  */
+
+              struct variable *v;
+
+              if (p->variable.flavor == f_simple)
+                {
+                  v = define_variable_loc (
+                    p->variable.name, strlen (p->variable.name),
+                    p->variable.value, p->variable.origin,
+                    0, &p->variable.fileinfo);
+
+                  v->flavor = f_simple;
+                }
+              else
+                {
+#ifndef CONFIG_WITH_VALUE_LENGTH
+                  v = do_variable_definition (
+                    &p->variable.fileinfo, p->variable.name,
+                    p->variable.value, p->variable.origin,
+                    p->variable.flavor, 1);
+#else
+                  v = do_variable_definition_2 (
+                    &p->variable.fileinfo, p->variable.name,
+                    p->variable.value, p->variable.value_length, 0, 0,
+                    p->variable.origin, p->variable.flavor, 1);
+#endif
+                }
+
+              /* Also mark it as a per-target and copy export status. */
+              v->per_target = p->variable.per_target;
+              v->export = p->variable.export;
+              v->private_var = p->variable.private_var;
+            }
+          while ((p = lookup_pattern_var (p, file->name)) != 0);
+
+          current_variable_set_list = global;
+        }
+      file->pat_searched = 1;
+    }
+
+  /* If we have a pattern variable match, set it up.  */
+
+  if (file->pat_variables != 0)
+    {
+      file->pat_variables->next = l->next;
+      file->pat_variables->next_is_parent = l->next_is_parent;
+      l->next = file->pat_variables;
+      l->next_is_parent = 0;
+    }
+}
+
+/* Pop the top set off the current variable set list,
+   and free all its storage.  */
+
+struct variable_set_list *
+create_new_variable_set (void)
+{
+  register struct variable_set_list *setlist;
+  register struct variable_set *set;
+
+#ifndef CONFIG_WITH_ALLOC_CACHES
+  set = xmalloc (sizeof (struct variable_set));
+#else
+  set = (struct variable_set *) alloccache_alloc (&variable_set_cache);
+#endif
+#ifndef CONFIG_WITH_STRCACHE2
+  hash_init (&set->table, SMALL_SCOPE_VARIABLE_BUCKETS,
+             variable_hash_1, variable_hash_2, variable_hash_cmp);
+#else  /* CONFIG_WITH_STRCACHE2 */
+  hash_init_strcached (&set->table, SMALL_SCOPE_VARIABLE_BUCKETS,
+                       &variable_strcache, offsetof (struct variable, name));
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+#ifndef CONFIG_WITH_ALLOC_CACHES
+  setlist = (struct variable_set_list *)
+    xmalloc (sizeof (struct variable_set_list));
+#else
+  setlist = (struct variable_set_list *)
+    alloccache_alloc (&variable_set_list_cache);
+#endif
+  setlist->set = set;
+  setlist->next = current_variable_set_list;
+  setlist->next_is_parent = 0;
+
+  return setlist;
+}
+
+/* Create a new variable set and push it on the current setlist.
+   If we're pushing a global scope (that is, the current scope is the global
+   scope) then we need to "push" it the other way: file variable sets point
+   directly to the global_setlist so we need to replace that with the new one.
+ */
+
+struct variable_set_list *
+push_new_variable_scope (void)
+{
+  current_variable_set_list = create_new_variable_set ();
+  if (current_variable_set_list->next == &global_setlist)
+    {
+      /* It was the global, so instead of new -> &global we want to replace
+         &global with the new one and have &global -> new, with current still
+         pointing to &global  */
+      struct variable_set *set = current_variable_set_list->set;
+      current_variable_set_list->set = global_setlist.set;
+      global_setlist.set = set;
+      current_variable_set_list->next = global_setlist.next;
+      global_setlist.next = current_variable_set_list;
+      current_variable_set_list = &global_setlist;
+    }
+  return (current_variable_set_list);
+}
+
+void
+pop_variable_scope (void)
+{
+  struct variable_set_list *setlist;
+  struct variable_set *set;
+
+  /* Can't call this if there's no scope to pop!  */
+  assert (current_variable_set_list->next != NULL);
+
+  if (current_variable_set_list != &global_setlist)
+    {
+      /* We're not pointing to the global setlist, so pop this one.  */
+      setlist = current_variable_set_list;
+      set = setlist->set;
+      current_variable_set_list = setlist->next;
+    }
+  else
+    {
+      /* This set is the one in the global_setlist, but there is another global
+         set beyond that.  We want to copy that set to global_setlist, then
+         delete what used to be in global_setlist.  */
+      setlist = global_setlist.next;
+      set = global_setlist.set;
+      global_setlist.set = setlist->set;
+      global_setlist.next = setlist->next;
+      global_setlist.next_is_parent = setlist->next_is_parent;
+    }
+
+  /* Free the one we no longer need.  */
+#ifndef CONFIG_WITH_ALLOC_CACHES
+  free (setlist);
+  hash_map (&set->table, free_variable_name_and_value);
+  hash_free (&set->table, 1);
+  free (set);
+#else
+  alloccache_free (&variable_set_list_cache, setlist);
+  hash_map (&set->table, free_variable_name_and_value);
+  hash_free_cached (&set->table, 1, &variable_cache);
+  alloccache_free (&variable_set_cache, set);
+#endif
+}
+
+/* Merge FROM_SET into TO_SET, freeing unused storage in FROM_SET.  */
+
+static void
+merge_variable_sets (struct variable_set *to_set,
+                     struct variable_set *from_set)
+{
+  struct variable **from_var_slot = (struct variable **) from_set->table.ht_vec;
+  struct variable **from_var_end = from_var_slot + from_set->table.ht_size;
+
+  int inc = to_set == &global_variable_set ? 1 : 0;
+
+  for ( ; from_var_slot < from_var_end; from_var_slot++)
+    if (! HASH_VACANT (*from_var_slot))
+      {
+        struct variable *from_var = *from_var_slot;
+        struct variable **to_var_slot
+#ifndef CONFIG_WITH_STRCACHE2
+          = (struct variable **) hash_find_slot (&to_set->table, *from_var_slot);
+#else  /* CONFIG_WITH_STRCACHE2 */
+	  = (struct variable **) hash_find_slot_strcached (&to_set->table,
+                                                           *from_var_slot);
+#endif /* CONFIG_WITH_STRCACHE2 */
+        if (HASH_VACANT (*to_var_slot))
+          {
+            hash_insert_at (&to_set->table, from_var, to_var_slot);
+            variable_changenum += inc;
+          }
+        else
+          {
+            /* GKM FIXME: delete in from_set->table */
+#ifdef KMK
+            if (from_var->aliased)
+              OS (fatal, NULL, ("Attempting to delete aliased variable '%s'"), from_var->name);
+            if (from_var->alias)
+              OS (fatal, NULL, ("Attempting to delete variable aliased '%s'"), from_var->name);
+#endif
+#ifdef CONFIG_WITH_COMPILER
+            if (from_var->evalprog || from_var->expandprog)
+              kmk_cc_variable_deleted (from_var);
+#endif
+#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+            if (!from_var->rdonly_val)
+#endif
+              free (from_var->value);
+            free (from_var);
+          }
+      }
+}
+
+/* Merge SETLIST1 into SETLIST0, freeing unused storage in SETLIST1.  */
+
+void
+merge_variable_set_lists (struct variable_set_list **setlist0,
+                          struct variable_set_list *setlist1)
+{
+  struct variable_set_list *to = *setlist0;
+  struct variable_set_list *last0 = 0;
+
+  /* If there's nothing to merge, stop now.  */
+  if (!setlist1)
+    return;
+
+  /* This loop relies on the fact that all setlists terminate with the global
+     setlist (before NULL).  If that's not true, arguably we SHOULD die.  */
+  if (to)
+    while (setlist1 != &global_setlist && to != &global_setlist)
+      {
+        struct variable_set_list *from = setlist1;
+        setlist1 = setlist1->next;
+
+        merge_variable_sets (to->set, from->set);
+
+        last0 = to;
+        to = to->next;
+      }
+
+  if (setlist1 != &global_setlist)
+    {
+      if (last0 == 0)
+        *setlist0 = setlist1;
+      else
+        last0->next = setlist1;
+    }
+}
+
+#if defined(KMK) && !defined(WINDOWS32)
+/* Parses out the next number from the uname release level string.  Fast
+   forwards to the end of the string when encountering some non-conforming
+   chars. */
+
+static unsigned long parse_release_number (const char **ppsz)
+{
+  unsigned long ul;
+  char *psz = (char *)*ppsz;
+  if (ISDIGIT (*psz))
+  {
+      ul = strtoul (psz, &psz, 10);
+      if (psz != NULL && *psz == '.')
+          psz++;
+      else
+          psz = strchr (*ppsz, '\0');
+      *ppsz = psz;
+  }
+  else
+      ul = 0;
+  return ul;
+}
+#endif
+
+/* Define the automatic variables, and record the addresses
+   of their structures so we can change their values quickly.  */
+
+void
+define_automatic_variables (void)
+{
+  struct variable *v;
+#ifndef KMK
+  char buf[200];
+#else
+  char buf[1024];
+  const char *val;
+  struct variable *envvar1;
+  struct variable *envvar2;
+# ifndef WINDOWS32
+  struct utsname uts;
+# endif
+  unsigned long ulMajor = 0, ulMinor = 0, ulPatch = 0, ul4th = 0;
+#endif
+
+  sprintf (buf, "%u", makelevel);
+  define_variable_cname (MAKELEVEL_NAME, buf, o_env, 0);
+
+  sprintf (buf, "%s%s%s",
+           version_string,
+           (remote_description == 0 || remote_description[0] == '\0')
+           ? "" : "-",
+           (remote_description == 0 || remote_description[0] == '\0')
+           ? "" : remote_description);
+#ifndef KMK
+  define_variable_cname ("MAKE_VERSION", buf, o_default, 0);
+  define_variable_cname ("MAKE_HOST", make_host, o_default, 0);
+#else /* KMK */
+
+  /* Define KMK_VERSION to indicate kMk. */
+  define_variable_cname ("KMK_VERSION", buf, o_default, 0);
+
+  /* Define KBUILD_VERSION* */
+  sprintf (buf, "%d", KBUILD_VERSION_MAJOR);
+  define_variable_cname ("KBUILD_VERSION_MAJOR", buf, o_default, 0);
+  sprintf (buf, "%d", KBUILD_VERSION_MINOR);
+  define_variable_cname ("KBUILD_VERSION_MINOR", buf, o_default, 0);
+  sprintf (buf, "%d", KBUILD_VERSION_PATCH);
+  define_variable_cname ("KBUILD_VERSION_PATCH", buf, o_default, 0);
+  sprintf (buf, "%d", KBUILD_SVN_REV);
+  define_variable_cname ("KBUILD_KMK_REVISION", buf, o_default, 0);
+
+  sprintf (buf, "%d.%d.%d-r%d", KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR,
+           KBUILD_VERSION_PATCH, KBUILD_SVN_REV);
+  define_variable_cname ("KBUILD_VERSION", buf, o_default, 0);
+
+  /* The host defaults. The BUILD_* stuff will be replaced by KBUILD_* soon. */
+  envvar1 = lookup_variable (STRING_SIZE_TUPLE ("KBUILD_HOST"));
+  envvar2 = lookup_variable (STRING_SIZE_TUPLE ("BUILD_PLATFORM"));
+  val = envvar1 ? envvar1->value : envvar2 ? envvar2->value : KBUILD_HOST;
+  if (envvar1 && envvar2 && strcmp (envvar1->value, envvar2->value))
+    OS (error, NULL, _("KBUILD_HOST and BUILD_PLATFORM differs, using KBUILD_HOST=%s."), val);
+  if (!envvar1)
+    define_variable_cname ("KBUILD_HOST", val, o_default, 0);
+  if (!envvar2)
+    define_variable_cname ("BUILD_PLATFORM", "$(KBUILD_HOST)", o_default, 1);
+
+  envvar1 = lookup_variable (STRING_SIZE_TUPLE ("KBUILD_HOST_ARCH"));
+  envvar2 = lookup_variable (STRING_SIZE_TUPLE ("BUILD_PLATFORM_ARCH"));
+  val = envvar1 ? envvar1->value : envvar2 ? envvar2->value : KBUILD_HOST_ARCH;
+  if (envvar1 && envvar2 && strcmp (envvar1->value, envvar2->value))
+    OS (error, NULL, _("KBUILD_HOST_ARCH and BUILD_PLATFORM_ARCH differs, using KBUILD_HOST_ARCH=%s."), val);
+  if (!envvar1)
+    define_variable_cname ("KBUILD_HOST_ARCH", val, o_default, 0);
+  if (!envvar2)
+    define_variable_cname ("BUILD_PLATFORM_ARCH", "$(KBUILD_HOST_ARCH)", o_default, 1);
+
+  envvar1 = lookup_variable (STRING_SIZE_TUPLE ("KBUILD_HOST_CPU"));
+  envvar2 = lookup_variable (STRING_SIZE_TUPLE ("BUILD_PLATFORM_CPU"));
+  val = envvar1 ? envvar1->value : envvar2 ? envvar2->value : KBUILD_HOST_CPU;
+  if (envvar1 && envvar2 && strcmp (envvar1->value, envvar2->value))
+    OS (error, NULL, _("KBUILD_HOST_CPU and BUILD_PLATFORM_CPU differs, using KBUILD_HOST_CPU=%s."), val);
+  if (!envvar1)
+    define_variable_cname ("KBUILD_HOST_CPU", val, o_default, 0);
+  if (!envvar2)
+    define_variable_cname ("BUILD_PLATFORM_CPU", "$(KBUILD_HOST_CPU)", o_default, 1);
+
+  /* The host kernel version. */
+# if defined(WINDOWS32)
+  {
+    OSVERSIONINFOEXW oix;
+    NTSTATUS (WINAPI *pfnRtlGetVersion)(OSVERSIONINFOEXW *);
+    *(FARPROC *)&pfnRtlGetVersion = GetProcAddress (GetModuleHandleW (L"NTDLL.DLL"),
+                                                    "RtlGetVersion"); /* GetVersionEx lies */
+    memset (&oix, '\0', sizeof (oix));
+    oix.dwOSVersionInfoSize = sizeof (OSVERSIONINFOEXW);
+    if (!pfnRtlGetVersion || pfnRtlGetVersion (&oix) < 0)
+      {
+        memset (&oix, '\0', sizeof (oix));
+        oix.dwOSVersionInfoSize = sizeof (OSVERSIONINFOEXW);
+        if (!GetVersionExW((LPOSVERSIONINFOW)&oix))
+          {
+            memset (&oix, '\0', sizeof (oix));
+            oix.dwOSVersionInfoSize = sizeof (OSVERSIONINFOW);
+            GetVersionExW ((LPOSVERSIONINFOW)&oix);
+          }
+      }
+    if (oix.dwPlatformId == VER_PLATFORM_WIN32_NT)
+      {
+        ulMajor = oix.dwMajorVersion;
+        ulMinor = oix.dwMinorVersion;
+        ulPatch = oix.wServicePackMajor;
+        ul4th   = oix.wServicePackMinor;
+      }
+    else
+      {
+        ulMajor = oix.dwPlatformId == 1 ? 0 /*Win95/98/ME*/
+                : oix.dwPlatformId == 3 ? 1 /*WinCE*/
+                : 2; /*??*/
+        ulMinor = oix.dwMajorVersion;
+        ulPatch = oix.dwMinorVersion;
+        ul4th   = oix.wServicePackMajor;
+      }
+    oix.dwBuildNumber &= 0x3fffffff;
+    sprintf (buf, "%lu", oix.dwBuildNumber);
+    define_variable_cname ("KBUILD_HOST_VERSION_BUILD", buf, o_default, 0);
+
+    sprintf (buf, "%lu.%lu.%lu.%lu.%lu", ulMajor, ulMinor, ulPatch, ul4th, oix.dwBuildNumber);
+    define_variable_cname ("KBUILD_HOST_VERSION", buf, o_default, 0);
+  }
+# else
+  memset (&uts, 0, sizeof(uts));
+  uname (&uts);
+  val = uts.release;
+  ulMajor = parse_release_number (&val);
+  ulMinor = parse_release_number (&val);
+  ulPatch = parse_release_number (&val);
+  ul4th   = parse_release_number (&val);
+
+  define_variable_cname ("KBUILD_HOST_UNAME_SYSNAME", uts.sysname, o_default, 0);
+  define_variable_cname ("KBUILD_HOST_UNAME_RELEASE", uts.release, o_default, 0);
+  define_variable_cname ("KBUILD_HOST_UNAME_VERSION", uts.version, o_default, 0);
+  define_variable_cname ("KBUILD_HOST_UNAME_MACHINE", uts.machine, o_default, 0);
+  define_variable_cname ("KBUILD_HOST_UNAME_NODENAME", uts.nodename, o_default, 0);
+
+  sprintf (buf, "%lu.%lu.%lu.%lu", ulMajor, ulMinor, ulPatch, ul4th);
+  define_variable_cname ("KBUILD_HOST_VERSION", buf, o_default, 0);
+# endif
+
+  sprintf (buf, "%lu", ulMajor);
+  define_variable_cname ("KBUILD_HOST_VERSION_MAJOR", buf, o_default, 0);
+
+  sprintf (buf, "%lu", ulMinor);
+  define_variable_cname ("KBUILD_HOST_VERSION_MINOR", buf, o_default, 0);
+
+  sprintf (buf, "%lu", ulPatch);
+  define_variable_cname ("KBUILD_HOST_VERSION_PATCH", buf, o_default, 0);
+
+  /* The kBuild locations. */
+  define_variable_cname ("KBUILD_PATH", get_kbuild_path (), o_default, 0);
+  define_variable_cname ("KBUILD_BIN_PATH", get_kbuild_bin_path (), o_default, 0);
+
+  define_variable_cname ("PATH_KBUILD", "$(KBUILD_PATH)", o_default, 1);
+  define_variable_cname ("PATH_KBUILD_BIN", "$(KBUILD_BIN_PATH)", o_default, 1);
+
+  /* Define KMK_FEATURES to indicate various working KMK features. */
+# if defined (CONFIG_WITH_RSORT) \
+  && defined (CONFIG_WITH_ABSPATHEX) \
+  && defined (CONFIG_WITH_TOUPPER_TOLOWER) \
+  && defined (CONFIG_WITH_DEFINED) \
+  && defined (CONFIG_WITH_VALUE_LENGTH) \
+  && defined (CONFIG_WITH_COMPARE) \
+  && defined (CONFIG_WITH_STACK) \
+  && defined (CONFIG_WITH_MATH) \
+  && defined (CONFIG_WITH_XARGS) \
+  && defined (CONFIG_WITH_EXPLICIT_MULTITARGET) \
+  && defined (CONFIG_WITH_DOT_MUST_MAKE) \
+  && defined (CONFIG_WITH_PREPEND_ASSIGNMENT) \
+  && defined (CONFIG_WITH_SET_CONDITIONALS) \
+  && defined (CONFIG_WITH_DATE) \
+  && defined (CONFIG_WITH_FILE_SIZE) \
+  && defined (CONFIG_WITH_WHERE_FUNCTION) \
+  && defined (CONFIG_WITH_WHICH) \
+  && defined (CONFIG_WITH_EVALPLUS) \
+  && (defined (CONFIG_WITH_MAKE_STATS) || defined (CONFIG_WITH_MINIMAL_STATS)) \
+  && defined (CONFIG_WITH_COMMANDS_FUNC) \
+  && defined (CONFIG_WITH_PRINTF) \
+  && defined (CONFIG_WITH_LOOP_FUNCTIONS) \
+  && defined (CONFIG_WITH_ROOT_FUNC) \
+  && defined (CONFIG_WITH_STRING_FUNCTIONS) \
+  && defined (CONFIG_WITH_DEFINED_FUNCTIONS) \
+  && defined (KMK_HELPERS)
+  define_variable_cname ("KMK_FEATURES",
+                         "append-dash-n abspath includedep-queue install-hard-linking umask quote versort"
+                         " kBuild-define"
+                         " rsort"
+                         " abspathex"
+                         " toupper tolower"
+                         " defined"
+                         " comp-vars comp-cmds comp-cmds-ex"
+                         " stack"
+                         " math-int"
+                         " xargs"
+                         " explicit-multitarget"
+                         " dot-must-make"
+                         " prepend-assignment"
+                         " set-conditionals intersects"
+                         " date"
+                         " file-size"
+                         " expr if-expr select"
+                         " where"
+                         " which"
+                         " evalctx evalval evalvalctx evalcall evalcall2 eval-opt-var"
+                         " make-stats"
+                         " commands"
+                         " printf"
+                         " for while"
+                         " root"
+                         " length insert pos lastpos substr translate"
+                         " kb-src-tool kb-obj-base kb-obj-suff kb-src-prop kb-src-one kb-exp-tmpl"
+                         " firstdefined lastdefined"
+                         , o_default, 0);
+# else /* MSC can't deal with strings mixed with #if/#endif, thus the slow way. */
+#  error "All features should be enabled by default!"
+  strcpy (buf, "append-dash-n abspath includedep-queue install-hard-linking umask quote versort"
+               " kBuild-define");
+#  if defined (CONFIG_WITH_RSORT)
+  strcat (buf, " rsort");
+#  endif
+#  if defined (CONFIG_WITH_ABSPATHEX)
+  strcat (buf, " abspathex");
+#  endif
+#  if defined (CONFIG_WITH_TOUPPER_TOLOWER)
+  strcat (buf, " toupper tolower");
+#  endif
+#  if defined (CONFIG_WITH_DEFINED)
+  strcat (buf, " defined");
+#  endif
+#  if defined (CONFIG_WITH_VALUE_LENGTH) && defined(CONFIG_WITH_COMPARE)
+  strcat (buf, " comp-vars comp-cmds comp-cmds-ex");
+#  endif
+#  if defined (CONFIG_WITH_STACK)
+  strcat (buf, " stack");
+#  endif
+#  if defined (CONFIG_WITH_MATH)
+  strcat (buf, " math-int");
+#  endif
+#  if defined (CONFIG_WITH_XARGS)
+  strcat (buf, " xargs");
+#  endif
+#  if defined (CONFIG_WITH_EXPLICIT_MULTITARGET)
+  strcat (buf, " explicit-multitarget");
+#  endif
+#  if defined (CONFIG_WITH_DOT_MUST_MAKE)
+  strcat (buf, " dot-must-make");
+#  endif
+#  if defined (CONFIG_WITH_PREPEND_ASSIGNMENT)
+  strcat (buf, " prepend-assignment");
+#  endif
+#  if defined (CONFIG_WITH_SET_CONDITIONALS)
+  strcat (buf, " set-conditionals intersects");
+#  endif
+#  if defined (CONFIG_WITH_DATE)
+  strcat (buf, " date");
+#  endif
+#  if defined (CONFIG_WITH_FILE_SIZE)
+  strcat (buf, " file-size");
+#  endif
+#  if defined (CONFIG_WITH_IF_CONDITIONALS)
+  strcat (buf, " expr if-expr select");
+#  endif
+#  if defined (CONFIG_WITH_WHERE_FUNCTION)
+  strcat (buf, " where");
+#  endif
+#  if defined (CONFIG_WITH_WHICH)
+  strcat (buf, " which");
+#  endif
+#  if defined (CONFIG_WITH_EVALPLUS)
+  strcat (buf, " evalctx evalval evalvalctx evalcall evalcall2 eval-opt-var");
+#  endif
+#  if defined (CONFIG_WITH_MAKE_STATS) || defined (CONFIG_WITH_MINIMAL_STATS)
+  strcat (buf, " make-stats");
+#  endif
+#  if defined (CONFIG_WITH_COMMANDS_FUNC)
+  strcat (buf, " commands");
+#  endif
+#  if defined (CONFIG_WITH_PRINTF)
+  strcat (buf, " printf");
+#  endif
+#  if defined (CONFIG_WITH_LOOP_FUNCTIONS)
+  strcat (buf, " for while");
+#  endif
+#  if defined (CONFIG_WITH_ROOT_FUNC)
+  strcat (buf, " root");
+#  endif
+#  if defined (CONFIG_WITH_STRING_FUNCTIONS)
+  strcat (buf, " length insert pos lastpos substr translate");
+#  endif
+#  if defined (CONFIG_WITH_DEFINED_FUNCTIONS)
+  strcat (buf, " firstdefined lastdefined");
+#  endif
+#  if defined (KMK_HELPERS)
+  strcat (buf, " kb-src-tool kb-obj-base kb-obj-suff kb-src-prop kb-src-one kb-exp-tmpl");
+#  endif
+  define_variable_cname ("KMK_FEATURES", buf, o_default, 0);
+# endif
+
+#endif /* KMK */
+
+#ifdef CONFIG_WITH_KMK_BUILTIN
+  /* The supported kMk Builtin commands. */
+  define_variable_cname ("KMK_BUILTIN", "append cat chmod cp cmp echo expr install kDepIDB ln md5sum mkdir mv printf rm rmdir sleep test", o_default, 0);
+#endif
+
+#ifdef  __MSDOS__
+  /* Allow to specify a special shell just for Make,
+     and use $COMSPEC as the default $SHELL when appropriate.  */
+  {
+    static char shell_str[] = "SHELL";
+    const int shlen = sizeof (shell_str) - 1;
+    struct variable *mshp = lookup_variable ("MAKESHELL", 9);
+    struct variable *comp = lookup_variable ("COMSPEC", 7);
+
+    /* $(MAKESHELL) overrides $(SHELL) even if -e is in effect.  */
+    if (mshp)
+      (void) define_variable (shell_str, shlen,
+                              mshp->value, o_env_override, 0);
+    else if (comp)
+      {
+        /* $(COMSPEC) shouldn't override $(SHELL).  */
+        struct variable *shp = lookup_variable (shell_str, shlen);
+
+        if (!shp)
+          (void) define_variable (shell_str, shlen, comp->value, o_env, 0);
+      }
+  }
+#elif defined(__EMX__)
+  {
+    static char shell_str[] = "SHELL";
+    const int shlen = sizeof (shell_str) - 1;
+    struct variable *shell = lookup_variable (shell_str, shlen);
+    struct variable *replace = lookup_variable ("MAKESHELL", 9);
+
+    /* if $MAKESHELL is defined in the environment assume o_env_override */
+    if (replace && *replace->value && replace->origin == o_env)
+      replace->origin = o_env_override;
+
+    /* if $MAKESHELL is not defined use $SHELL but only if the variable
+       did not come from the environment */
+    if (!replace || !*replace->value)
+      if (shell && *shell->value && (shell->origin == o_env
+          || shell->origin == o_env_override))
+        {
+          /* overwrite whatever we got from the environment */
+          free (shell->value);
+          shell->value = xstrdup (default_shell);
+          shell->origin = o_default;
+        }
+
+    /* Some people do not like cmd to be used as the default
+       if $SHELL is not defined in the Makefile.
+       With -DNO_CMD_DEFAULT you can turn off this behaviour */
+# ifndef NO_CMD_DEFAULT
+    /* otherwise use $COMSPEC */
+    if (!replace || !*replace->value)
+      replace = lookup_variable ("COMSPEC", 7);
+
+    /* otherwise use $OS2_SHELL */
+    if (!replace || !*replace->value)
+      replace = lookup_variable ("OS2_SHELL", 9);
+# else
+#   warning NO_CMD_DEFAULT: GNU make will not use CMD.EXE as default shell
+# endif
+
+    if (replace && *replace->value)
+      /* overwrite $SHELL */
+      (void) define_variable (shell_str, shlen, replace->value,
+                              replace->origin, 0);
+    else
+      /* provide a definition if there is none */
+      (void) define_variable (shell_str, shlen, default_shell,
+                              o_default, 0);
+  }
+
+#endif
+
+  /* This won't override any definition, but it will provide one if there
+     isn't one there.  */
+  v = define_variable_cname ("SHELL", default_shell, o_default, 0);
+#ifdef __MSDOS__
+  v->export = v_export;  /*  Export always SHELL.  */
+#endif
+
+  /* On MSDOS we do use SHELL from environment, since it isn't a standard
+     environment variable on MSDOS, so whoever sets it, does that on purpose.
+     On OS/2 we do not use SHELL from environment but we have already handled
+     that problem above. */
+#if !defined(__MSDOS__) && !defined(__EMX__)
+  /* Don't let SHELL come from the environment.  */
+  if (*v->value == '\0' || v->origin == o_env || v->origin == o_env_override)
+    {
+# ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+      if (v->rdonly_val)
+        v->rdonly_val = 0;
+      else
+# endif
+        free (v->value);
+      v->origin = o_file;
+      v->value = xstrdup (default_shell);
+# ifdef CONFIG_WITH_VALUE_LENGTH
+      v->value_length = strlen (v->value);
+      v->value_alloc_len = v->value_length + 1;
+# endif
+    }
+#endif
+
+  /* Make sure MAKEFILES gets exported if it is set.  */
+  v = define_variable_cname ("MAKEFILES", "", o_default, 0);
+  v->export = v_ifset;
+
+  /* Define the magic D and F variables in terms of
+     the automatic variables they are variations of.  */
+
+#if defined(__MSDOS__) || defined(WINDOWS32)
+  /* For consistency, remove the trailing backslash as well as slash.  */
+  define_variable_cname ("@D", "$(patsubst %/,%,$(patsubst %\\,%,$(dir $@)))",
+                         o_automatic, 1);
+  define_variable_cname ("%D", "$(patsubst %/,%,$(patsubst %\\,%,$(dir $%)))",
+                         o_automatic, 1);
+  define_variable_cname ("*D", "$(patsubst %/,%,$(patsubst %\\,%,$(dir $*)))",
+                         o_automatic, 1);
+  define_variable_cname ("<D", "$(patsubst %/,%,$(patsubst %\\,%,$(dir $<)))",
+                         o_automatic, 1);
+  define_variable_cname ("?D", "$(patsubst %/,%,$(patsubst %\\,%,$(dir $?)))",
+                         o_automatic, 1);
+  define_variable_cname ("^D", "$(patsubst %/,%,$(patsubst %\\,%,$(dir $^)))",
+                         o_automatic, 1);
+  define_variable_cname ("+D", "$(patsubst %/,%,$(patsubst %\\,%,$(dir $+)))",
+                         o_automatic, 1);
+#else  /* not __MSDOS__, not WINDOWS32 */
+  define_variable_cname ("@D", "$(patsubst %/,%,$(dir $@))", o_automatic, 1);
+  define_variable_cname ("%D", "$(patsubst %/,%,$(dir $%))", o_automatic, 1);
+  define_variable_cname ("*D", "$(patsubst %/,%,$(dir $*))", o_automatic, 1);
+  define_variable_cname ("<D", "$(patsubst %/,%,$(dir $<))", o_automatic, 1);
+  define_variable_cname ("?D", "$(patsubst %/,%,$(dir $?))", o_automatic, 1);
+  define_variable_cname ("^D", "$(patsubst %/,%,$(dir $^))", o_automatic, 1);
+  define_variable_cname ("+D", "$(patsubst %/,%,$(dir $+))", o_automatic, 1);
+#endif
+  define_variable_cname ("@F", "$(notdir $@)", o_automatic, 1);
+  define_variable_cname ("%F", "$(notdir $%)", o_automatic, 1);
+  define_variable_cname ("*F", "$(notdir $*)", o_automatic, 1);
+  define_variable_cname ("<F", "$(notdir $<)", o_automatic, 1);
+  define_variable_cname ("?F", "$(notdir $?)", o_automatic, 1);
+  define_variable_cname ("^F", "$(notdir $^)", o_automatic, 1);
+  define_variable_cname ("+F", "$(notdir $+)", o_automatic, 1);
+#ifdef CONFIG_WITH_LAZY_DEPS_VARS
+  define_variable ("^", 1, "$(deps $@)", o_automatic, 1);
+  define_variable ("+", 1, "$(deps-all $@)", o_automatic, 1);
+  define_variable ("?", 1, "$(deps-newer $@)", o_automatic, 1);
+  define_variable ("|", 1, "$(deps-oo $@)", o_automatic, 1);
+#endif /* CONFIG_WITH_LAZY_DEPS_VARS */
+}
+
+int export_all_variables;
+
+#ifdef KMK
+/* Cached table containing the exports of the global_variable_set.  When
+   there are many global variables, it can be so expensive to construct the
+   child environment that we have a majority of job slot idle.  */
+static size_t             global_variable_set_exports_generation = ~(size_t)0;
+static struct hash_table  global_variable_set_exports;
+
+static void update_global_variable_set_exports(void)
+{
+  struct variable **v_slot;
+  struct variable **v_end;
+
+  /* Re-initialize the table. */
+  if (global_variable_set_exports_generation != ~(size_t)0)
+    hash_free (&global_variable_set_exports, 0);
+  hash_init_strcached (&global_variable_set_exports, ENVIRONMENT_VARIABLE_BUCKETS,
+                       &variable_strcache, offsetof (struct variable, name));
+
+  /* do pretty much the same as target_environment. */
+  v_slot = (struct variable **) global_variable_set.table.ht_vec;
+  v_end = v_slot + global_variable_set.table.ht_size;
+  for ( ; v_slot < v_end; v_slot++)
+    if (! HASH_VACANT (*v_slot))
+      {
+        struct variable **new_slot;
+        struct variable *v = *v_slot;
+
+        switch (v->export)
+          {
+          case v_default:
+            if (v->origin == o_default || v->origin == o_automatic)
+              /* Only export default variables by explicit request.  */
+              continue;
+
+            /* The variable doesn't have a name that can be exported.  */
+            if (! v->exportable)
+              continue;
+
+            if (! export_all_variables
+                && v->origin != o_command
+                && v->origin != o_env && v->origin != o_env_override)
+              continue;
+            break;
+
+          case v_export:
+            break;
+
+          case v_noexport:
+            {
+              /* If this is the SHELL variable and it's not exported,
+                 then add the value from our original environment, if
+                 the original environment defined a value for SHELL.  */
+              extern struct variable shell_var;
+              if (streq (v->name, "SHELL") && shell_var.value)
+                {
+                  v = &shell_var;
+                  break;
+                }
+              continue;
+            }
+
+          case v_ifset:
+            if (v->origin == o_default)
+              continue;
+            break;
+          }
+
+        assert (strcache2_is_cached (&variable_strcache, v->name));
+        new_slot = (struct variable **) hash_find_slot_strcached (&global_variable_set_exports, v);
+        if (HASH_VACANT (*new_slot))
+          hash_insert_at (&global_variable_set_exports, v, new_slot);
+      }
+
+  /* done */
+  global_variable_set_exports_generation = global_variable_generation;
+}
+
+#endif
+
+/* Create a new environment for FILE's commands.
+   If FILE is nil, this is for the 'shell' function.
+   The child's MAKELEVEL variable is incremented.  */
+
+char **
+target_environment (struct file *file)
+{
+  struct variable_set_list *set_list;
+  register struct variable_set_list *s;
+  struct hash_table table;
+  struct variable **v_slot;
+  struct variable **v_end;
+  struct variable makelevel_key;
+  char **result_0;
+  char **result;
+#ifdef CONFIG_WITH_STRCACHE2
+  const char *cached_name;
+#endif
+
+#ifdef KMK
+  if (global_variable_set_exports_generation != global_variable_generation)
+    update_global_variable_set_exports();
+#endif
+
+  if (file == 0)
+    set_list = current_variable_set_list;
+  else
+    set_list = file->variables;
+
+#ifndef CONFIG_WITH_STRCACHE2
+  hash_init (&table, ENVIRONMENT_VARIABLE_BUCKETS,
+             variable_hash_1, variable_hash_2, variable_hash_cmp);
+#else  /* CONFIG_WITH_STRCACHE2 */
+  hash_init_strcached (&table, ENVIRONMENT_VARIABLE_BUCKETS,
+                       &variable_strcache, offsetof (struct variable, name));
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+  /* Run through all the variable sets in the list,
+     accumulating variables in TABLE.  */
+  for (s = set_list; s != 0; s = s->next)
+    {
+      struct variable_set *set = s->set;
+#ifdef KMK
+      if (set == &global_variable_set)
+        {
+          assert(s->next == NULL);
+          break;
+        }
+#endif
+      v_slot = (struct variable **) set->table.ht_vec;
+      v_end = v_slot + set->table.ht_size;
+      for ( ; v_slot < v_end; v_slot++)
+        if (! HASH_VACANT (*v_slot))
+          {
+            struct variable **new_slot;
+            struct variable *v = *v_slot;
+
+            /* If this is a per-target variable and it hasn't been touched
+               already then look up the global version and take its export
+               value.  */
+            if (v->per_target && v->export == v_default)
+              {
+                struct variable *gv;
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+                gv = lookup_variable_in_set (v->name, strlen (v->name),
+                                             &global_variable_set);
+#else
+                assert ((int)strlen(v->name) == v->length);
+                gv = lookup_variable_in_set (v->name, v->length,
+                                             &global_variable_set);
+#endif
+                if (gv)
+                  v->export = gv->export;
+              }
+
+            switch (v->export)
+              {
+              case v_default:
+                if (v->origin == o_default || v->origin == o_automatic)
+                  /* Only export default variables by explicit request.  */
+                  continue;
+
+                /* The variable doesn't have a name that can be exported.  */
+                if (! v->exportable)
+                  continue;
+
+                if (! export_all_variables
+                    && v->origin != o_command
+                    && v->origin != o_env && v->origin != o_env_override)
+                  continue;
+                break;
+
+              case v_export:
+                break;
+
+              case v_noexport:
+                {
+                  /* If this is the SHELL variable and it's not exported,
+                     then add the value from our original environment, if
+                     the original environment defined a value for SHELL.  */
+                  if (streq (v->name, "SHELL") && shell_var.value)
+                    {
+                      v = &shell_var;
+                      break;
+                    }
+                  continue;
+                }
+
+              case v_ifset:
+                if (v->origin == o_default)
+                  continue;
+                break;
+              }
+
+#ifndef CONFIG_WITH_STRCACHE2
+            new_slot = (struct variable **) hash_find_slot (&table, v);
+#else  /* CONFIG_WITH_STRCACHE2 */
+	    assert (strcache2_is_cached (&variable_strcache, v->name));
+	    new_slot = (struct variable **) hash_find_slot_strcached (&table, v);
+#endif /* CONFIG_WITH_STRCACHE2 */
+            if (HASH_VACANT (*new_slot))
+              hash_insert_at (&table, v, new_slot);
+          }
+    }
+
+#ifdef KMK
+  /* Add the global exports to table. */
+  v_slot = (struct variable **) global_variable_set_exports.ht_vec;
+  v_end = v_slot + global_variable_set_exports.ht_size;
+  for ( ; v_slot < v_end; v_slot++)
+    if (! HASH_VACANT (*v_slot))
+      {
+        struct variable **new_slot;
+        struct variable *v = *v_slot;
+	assert (strcache2_is_cached (&variable_strcache, v->name));
+	new_slot = (struct variable **) hash_find_slot_strcached (&table, v);
+	if (HASH_VACANT (*new_slot))
+	  hash_insert_at (&table, v, new_slot);
+      }
+#endif
+
+#ifndef CONFIG_WITH_STRCACHE2
+  makelevel_key.name = (char *)MAKELEVEL_NAME;
+  makelevel_key.length = MAKELEVEL_LENGTH;
+  hash_delete (&table, &makelevel_key);
+#else  /* CONFIG_WITH_STRCACHE2 */
+  /* lookup the name in the string case, if it's not there it won't
+     be in any of the sets either. */
+  cached_name = strcache2_lookup (&variable_strcache,
+                                  MAKELEVEL_NAME, MAKELEVEL_LENGTH);
+  if (cached_name)
+    {
+      makelevel_key.name = cached_name;
+      makelevel_key.length = MAKELEVEL_LENGTH;
+      hash_delete_strcached (&table, &makelevel_key);
+    }
+#endif /* CONFIG_WITH_STRCACHE2 */
+
+  result = result_0 = xmalloc ((table.ht_fill + 2) * sizeof (char *));
+
+  v_slot = (struct variable **) table.ht_vec;
+  v_end = v_slot + table.ht_size;
+  for ( ; v_slot < v_end; v_slot++)
+    if (! HASH_VACANT (*v_slot))
+      {
+        struct variable *v = *v_slot;
+
+        /* If V is recursively expanded and didn't come from the environment,
+           expand its value.  If it came from the environment, it should
+           go back into the environment unchanged.  */
+        if (v->recursive
+            && v->origin != o_env && v->origin != o_env_override)
+          {
+#ifndef CONFIG_WITH_VALUE_LENGTH
+            char *value = recursively_expand_for_file (v, file);
+#else
+	    char *value = recursively_expand_for_file (v, file, NULL);
+#endif
+#ifdef WINDOWS32
+            if (strcmp (v->name, "Path") == 0 ||
+                strcmp (v->name, "PATH") == 0)
+              convert_Path_to_windows32 (value, ';');
+#endif
+            *result++ = xstrdup (concat (3, v->name, "=", value));
+            free (value);
+          }
+        else
+          {
+#ifdef WINDOWS32
+            if (strcmp (v->name, "Path") == 0 ||
+                strcmp (v->name, "PATH") == 0)
+              convert_Path_to_windows32 (v->value, ';');
+#endif
+            *result++ = xstrdup (concat (3, v->name, "=", v->value));
+          }
+      }
+
+  *result = xmalloc (100);
+  sprintf (*result, "%s=%u", MAKELEVEL_NAME, makelevel + 1);
+  *++result = 0;
+
+  hash_free (&table, 0);
+
+  return result_0;
+}
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+/* Worker function for do_variable_definition_append() and
+   append_expanded_string_to_variable().
+   The APPEND argument indicates whether it's an append or prepend operation. */
+void append_string_to_variable (struct variable *v, const char *value, unsigned int value_len, int append)
+{
+  /* The previous definition of the variable was recursive.
+     The new value is the unexpanded old and new values. */
+  unsigned int new_value_len = value_len + (v->value_length != 0 ? 1 + v->value_length : 0);
+  int done_1st_prepend_copy = 0;
+#ifdef KMK
+  assert (!v->alias);
+#endif
+
+  /* Drop empty strings. Use $(NO_SUCH_VARIABLE) if a space is wanted. */
+  if (!value_len)
+      return;
+
+  /* adjust the size. */
+  if (v->value_alloc_len <= new_value_len + 1)
+    {
+      if (v->value_alloc_len < 256)
+        v->value_alloc_len = 256;
+      else
+        v->value_alloc_len *= 2;
+      if (v->value_alloc_len < new_value_len + 1)
+        v->value_alloc_len = VAR_ALIGN_VALUE_ALLOC (new_value_len + 1 + value_len /*future*/ );
+# ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+      if ((append || !v->value_length) && !v->rdonly_val)
+# else
+      if (append || !v->value_length)
+# endif
+        v->value = xrealloc (v->value, v->value_alloc_len);
+      else
+        {
+          /* avoid the extra memcpy the xrealloc may have to do */
+          char *new_buf = xmalloc (v->value_alloc_len);
+          memcpy (&new_buf[value_len + 1], v->value, v->value_length + 1);
+          done_1st_prepend_copy = 1;
+# ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+          if (v->rdonly_val)
+            v->rdonly_val = 0;
+          else
+# endif
+            free (v->value);
+          v->value = new_buf;
+        }
+      MAKE_STATS_2(v->reallocs++);
+    }
+
+  /* insert the new bits */
+  if (v->value_length != 0)
+    {
+      if (append)
+        {
+          v->value[v->value_length] = ' ';
+          memcpy (&v->value[v->value_length + 1], value, value_len + 1);
+        }
+      else
+        {
+          if (!done_1st_prepend_copy)
+            memmove (&v->value[value_len + 1], v->value, v->value_length + 1);
+          v->value[value_len] = ' ';
+          memcpy (v->value, value, value_len);
+        }
+    }
+  else
+    memcpy (v->value, value, value_len + 1);
+  v->value_length = new_value_len;
+  VARIABLE_CHANGED (v);
+}
+
+struct variable *
+do_variable_definition_append (const floc *flocp, struct variable *v,
+                               const char *value, unsigned int value_len,
+                               int simple_value, enum variable_origin origin,
+                               int append)
+{
+  if (env_overrides && origin == o_env)
+    origin = o_env_override;
+
+  if (env_overrides && v->origin == o_env)
+    /* V came from in the environment.  Since it was defined
+       before the switches were parsed, it wasn't affected by -e.  */
+    v->origin = o_env_override;
+
+  /* A variable of this name is already defined.
+     If the old definition is from a stronger source
+     than this one, don't redefine it.  */
+  if ((int) origin < (int) v->origin)
+    return v;
+  v->origin = origin;
+
+  /* location */
+  if (flocp != 0)
+    v->fileinfo = *flocp;
+
+  /* The juicy bits, append the specified value to the variable
+     This is a heavily exercised code path in kBuild. */
+  if (value_len == ~0U)
+    value_len = strlen (value);
+  if (v->recursive || simple_value)
+    append_string_to_variable (v, value, value_len, append);
+  else
+    /* The previous definition of the variable was simple.
+       The new value comes from the old value, which was expanded
+       when it was set; and from the expanded new value. */
+    append_expanded_string_to_variable (v, value, value_len, append);
+
+  /* update the variable */
+  return v;
+}
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+
+static struct variable *
+set_special_var (struct variable *var)
+{
+  if (streq (var->name, RECIPEPREFIX_NAME))
+    {
+      /* The user is resetting the command introduction prefix.  This has to
+         happen immediately, so that subsequent rules are interpreted
+         properly.  */
+      cmd_prefix = var->value[0]=='\0' ? RECIPEPREFIX_DEFAULT : var->value[0];
+    }
+
+  return var;
+}
+
+/* Given a string, shell-execute it and return a malloc'ed string of the
+ * result. This removes only ONE newline (if any) at the end, for maximum
+ * compatibility with the *BSD makes.  If it fails, returns NULL. */
+
+static char *
+shell_result (const char *p)
+{
+  char *buf;
+  unsigned int len;
+  char *args[2];
+  char *result;
+
+  install_variable_buffer (&buf, &len);
+
+  args[0] = (char *) p;
+  args[1] = NULL;
+  variable_buffer_output (func_shell_base (variable_buffer, args, 0), "\0", 1);
+  result = strdup (variable_buffer);
+
+  restore_variable_buffer (buf, len);
+  return result;
+}
+
+/* Given a variable, a value, and a flavor, define the variable.
+   See the try_variable_definition() function for details on the parameters. */
+
+struct variable *
+#ifndef CONFIG_WITH_VALUE_LENGTH
+do_variable_definition (const floc *flocp, const char *varname,
+                        const char *value, enum variable_origin origin,
+                        enum variable_flavor flavor, int target_var)
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+do_variable_definition_2 (const floc *flocp,
+                          const char *varname, const char *value,
+                          unsigned int value_len, int simple_value,
+                          char *free_value,
+                          enum variable_origin origin,
+                          enum variable_flavor flavor,
+                          int target_var)
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+{
+  const char *p;
+  char *alloc_value = NULL;
+  struct variable *v;
+  int append = 0;
+  int conditional = 0;
+  const size_t varname_len = strlen (varname); /* bird */
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  if (value_len == ~0U)
+    value_len = strlen (value);
+  else
+    assert (value_len == strlen (value));
+#endif
+
+  /* Calculate the variable's new value in VALUE.  */
+
+  switch (flavor)
+    {
+    default:
+    case f_bogus:
+      /* Should not be possible.  */
+      abort ();
+    case f_simple:
+      /* A simple variable definition "var := value".  Expand the value.
+         We have to allocate memory since otherwise it'll clobber the
+         variable buffer, and we may still need that if we're looking at a
+         target-specific variable.  */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+      p = alloc_value = allocated_variable_expand (value);
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+      if (!simple_value)
+        p = alloc_value = allocated_variable_expand_2 (value, value_len, &value_len);
+      else
+      {
+        if (value_len == ~0U)
+          value_len = strlen (value);
+        if (!free_value)
+          p = alloc_value = xstrndup (value, value_len);
+        else
+          {
+            assert (value == free_value);
+            p = alloc_value = free_value;
+            free_value = 0;
+          }
+      }
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+      break;
+    case f_shell:
+      {
+        /* A shell definition "var != value".  Expand value, pass it to
+           the shell, and store the result in recursively-expanded var. */
+        char *q = allocated_variable_expand (value);
+        p = alloc_value = shell_result (q);
+        free (q);
+        flavor = f_recursive;
+        break;
+      }
+    case f_conditional:
+      /* A conditional variable definition "var ?= value".
+         The value is set IFF the variable is not defined yet. */
+      v = lookup_variable (varname, varname_len);
+      if (v)
+#ifndef CONFIG_WITH_VALUE_LENGTH
+        return v->special ? set_special_var (v) : v;
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+        {
+          if (free_value)
+            free (free_value);
+          return v->special ? set_special_var (v) : v;
+        }
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+
+      conditional = 1;
+      flavor = f_recursive;
+      /* FALLTHROUGH */
+    case f_recursive:
+      /* A recursive variable definition "var = value".
+         The value is used verbatim.  */
+      p = value;
+      break;
+#ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
+    case f_append:
+    case f_prepend:
+      {
+        const enum variable_flavor org_flavor = flavor;
+#else
+    case f_append:
+      {
+#endif
+
+        /* If we have += but we're in a target variable context, we want to
+           append only with other variables in the context of this target.  */
+        if (target_var)
+          {
+            append = 1;
+            v = lookup_variable_in_set (varname, varname_len,
+                                        current_variable_set_list->set);
+
+            /* Don't append from the global set if a previous non-appending
+               target-specific variable definition exists. */
+            if (v && !v->append)
+              append = 0;
+          }
+#ifdef KMK
+        else if (   g_pTopKbEvalData
+                 || (   varname_len > 3
+                     && varname[0] == '['
+                     && is_kbuild_object_variable_accessor (varname, varname_len)) )
+          {
+            v = kbuild_object_variable_pre_append (varname, varname_len,
+                                                   value, value_len, simple_value,
+                                                   origin, org_flavor == f_append, flocp);
+            if (free_value)
+               free (free_value);
+            return v;
+          }
+#endif
+#ifdef CONFIG_WITH_LOCAL_VARIABLES
+        /* If 'local', restrict it to the current variable context. */
+        else if (origin == o_local)
+          v = lookup_variable_in_set (varname, varname_len,
+                                      current_variable_set_list->set);
+#endif
+        else
+          v = lookup_variable (varname, varname_len);
+
+        if (v == 0)
+          {
+            /* There was no old value.
+               This becomes a normal recursive definition.  */
+            p = value;
+            flavor = f_recursive;
+          }
+        else
+          {
+#ifdef CONFIG_WITH_VALUE_LENGTH
+            v->append = append;
+            v = do_variable_definition_append (flocp, v, value, value_len,
+                                               simple_value, origin,
+# ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
+                                               org_flavor == f_append);
+# else
+                                               1);
+# endif
+            if (free_value)
+               free (free_value);
+            return v;
+#else /* !CONFIG_WITH_VALUE_LENGTH */
+
+            /* Paste the old and new values together in VALUE.  */
+
+            unsigned int oldlen, vallen;
+            const char *val;
+            char *tp = NULL;
+
+            val = value;
+            if (v->recursive)
+              /* The previous definition of the variable was recursive.
+                 The new value is the unexpanded old and new values. */
+              flavor = f_recursive;
+            else
+              /* The previous definition of the variable was simple.
+                 The new value comes from the old value, which was expanded
+                 when it was set; and from the expanded new value.  Allocate
+                 memory for the expansion as we may still need the rest of the
+                 buffer if we're looking at a target-specific variable.  */
+              val = tp = allocated_variable_expand (val);
+
+            oldlen = strlen (v->value);
+            vallen = strlen (val);
+            p = alloc_value = xmalloc (oldlen + 1 + vallen + 1);
+# ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
+            if (org_flavor == f_prepend)
+              {
+                memcpy (alloc_value, val, vallen);
+                alloc_value[oldlen] = ' ';
+                memcpy (&alloc_value[oldlen + 1], v->value, oldlen + 1);
+              }
+            else
+# endif /* CONFIG_WITH_PREPEND_ASSIGNMENT */
+              {
+                memcpy (alloc_value, v->value, oldlen);
+                alloc_value[oldlen] = ' ';
+                memcpy (&alloc_value[oldlen + 1], val, vallen + 1);
+              }
+
+            free (tp);
+#endif /* !CONFIG_WITH_VALUE_LENGTH */
+          }
+      }
+    }
+
+#ifdef __MSDOS__
+  /* Many Unix Makefiles include a line saying "SHELL=/bin/sh", but
+     non-Unix systems don't conform to this default configuration (in
+     fact, most of them don't even have '/bin').  On the other hand,
+     $SHELL in the environment, if set, points to the real pathname of
+     the shell.
+     Therefore, we generally won't let lines like "SHELL=/bin/sh" from
+     the Makefile override $SHELL from the environment.  But first, we
+     look for the basename of the shell in the directory where SHELL=
+     points, and along the $PATH; if it is found in any of these places,
+     we define $SHELL to be the actual pathname of the shell.  Thus, if
+     you have bash.exe installed as d:/unix/bash.exe, and d:/unix is on
+     your $PATH, then SHELL=/usr/local/bin/bash will have the effect of
+     defining SHELL to be "d:/unix/bash.exe".  */
+  if ((origin == o_file || origin == o_override)
+      && strcmp (varname, "SHELL") == 0)
+    {
+      PATH_VAR (shellpath);
+      extern char * __dosexec_find_on_path (const char *, char *[], char *);
+
+      /* See if we can find "/bin/sh.exe", "/bin/sh.com", etc.  */
+      if (__dosexec_find_on_path (p, NULL, shellpath))
+        {
+          char *tp;
+
+          for (tp = shellpath; *tp; tp++)
+            if (*tp == '\\')
+              *tp = '/';
+
+          v = define_variable_loc (varname, varname_len,
+                                   shellpath, origin, flavor == f_recursive,
+                                   flocp);
+        }
+      else
+        {
+          const char *shellbase, *bslash;
+          struct variable *pathv = lookup_variable ("PATH", 4);
+          char *path_string;
+          char *fake_env[2];
+          size_t pathlen = 0;
+
+          shellbase = strrchr (p, '/');
+          bslash = strrchr (p, '\\');
+          if (!shellbase || bslash > shellbase)
+            shellbase = bslash;
+          if (!shellbase && p[1] == ':')
+            shellbase = p + 1;
+          if (shellbase)
+            shellbase++;
+          else
+            shellbase = p;
+
+          /* Search for the basename of the shell (with standard
+             executable extensions) along the $PATH.  */
+          if (pathv)
+            pathlen = strlen (pathv->value);
+          path_string = xmalloc (5 + pathlen + 2 + 1);
+          /* On MSDOS, current directory is considered as part of $PATH.  */
+          sprintf (path_string, "PATH=.;%s", pathv ? pathv->value : "");
+          fake_env[0] = path_string;
+          fake_env[1] = 0;
+          if (__dosexec_find_on_path (shellbase, fake_env, shellpath))
+            {
+              char *tp;
+
+              for (tp = shellpath; *tp; tp++)
+                if (*tp == '\\')
+                  *tp = '/';
+
+              v = define_variable_loc (varname, varname_len,
+                                       shellpath, origin,
+                                       flavor == f_recursive, flocp);
+	    }
+          else
+            v = lookup_variable (varname, varname_len);
+
+          free (path_string);
+        }
+    }
+  else
+#endif /* __MSDOS__ */
+#ifdef WINDOWS32
+  if (   varname_len == sizeof("SHELL") - 1 /* bird */
+      && (origin == o_file || origin == o_override || origin == o_command)
+      && streq (varname, "SHELL"))
+    {
+      extern const char *default_shell;
+
+      /* Call shell locator function. If it returns TRUE, then
+         set no_default_sh_exe to indicate sh was found and
+         set new value for SHELL variable.  */
+
+      if (find_and_set_default_shell (p))
+        {
+          v = define_variable_in_set (varname, varname_len, default_shell,
+# ifdef CONFIG_WITH_VALUE_LENGTH
+                                      ~0U, 1 /* duplicate_value */,
+# endif
+                                      origin, flavor == f_recursive,
+                                      (target_var
+                                       ? current_variable_set_list->set
+                                       : NULL),
+                                      flocp);
+          no_default_sh_exe = 0;
+        }
+      else
+        {
+          char *tp = alloc_value;
+
+          alloc_value = allocated_variable_expand (p);
+
+          if (find_and_set_default_shell (alloc_value))
+            {
+              v = define_variable_in_set (varname, varname_len, p,
+#ifdef CONFIG_WITH_VALUE_LENGTH
+                                          ~0U, 1 /* duplicate_value */,
+#endif
+                                          origin, flavor == f_recursive,
+                                          (target_var
+                                           ? current_variable_set_list->set
+                                           : NULL),
+                                          flocp);
+              no_default_sh_exe = 0;
+            }
+          else
+            v = lookup_variable (varname, varname_len);
+
+          free (tp);
+        }
+    }
+  else
+#endif
+
+  /* If we are defining variables inside an $(eval ...), we might have a
+     different variable context pushed, not the global context (maybe we're
+     inside a $(call ...) or something.  Since this function is only ever
+     invoked in places where we want to define globally visible variables,
+     make sure we define this variable in the global set.  */
+
+  v = define_variable_in_set (varname, varname_len, p,
+#ifdef CONFIG_WITH_VALUE_LENGTH
+                              value_len, !alloc_value,
+#endif
+                              origin, flavor == f_recursive,
+#ifdef CONFIG_WITH_LOCAL_VARIABLES
+                              (target_var || origin == o_local
+#else
+                              (target_var
+#endif
+                               ? current_variable_set_list->set : NULL),
+                              flocp);
+  v->append = append;
+  v->conditional = conditional;
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  free (alloc_value);
+#else
+  if (free_value)
+    free (free_value);
+#endif
+
+  return v->special ? set_special_var (v) : v;
+}
+
+/* Parse P (a null-terminated string) as a variable definition.
+
+   If it is not a variable definition, return NULL and the contents of *VAR
+   are undefined, except NAME is set to the first non-space character or NIL.
+
+   If it is a variable definition, return a pointer to the char after the
+   assignment token and set the following fields (only) of *VAR:
+    name   : name of the variable (ALWAYS SET) (NOT NUL-TERMINATED!)
+    length : length of the variable name
+    value  : value of the variable (nul-terminated)
+    flavor : flavor of the variable
+   Other values in *VAR are unchanged.
+  */
+
+char *
+parse_variable_definition (const char *p, struct variable *var)
+{
+  int wspace = 0;
+  const char *e = NULL;
+
+/** @todo merge 4.2.1: parse_variable_definition does more now */
+  NEXT_TOKEN (p);
+  var->name = (char *)p;
+  var->length = 0;
+
+  while (1)
+    {
+      int c = *p++;
+
+      /* If we find a comment or EOS, it's not a variable definition.  */
+      if (STOP_SET (c, MAP_COMMENT|MAP_NUL))
+        return NULL;
+
+      if (c == '$')
+        {
+          /* This begins a variable expansion reference.  Make sure we don't
+             treat chars inside the reference as assignment tokens.  */
+          char closeparen;
+          unsigned int count;
+
+          c = *p++;
+          if (c == '(')
+            closeparen = ')';
+          else if (c == '{')
+            closeparen = '}';
+          else if (c == '\0')
+            return NULL;
+          else
+            /* '$$' or '$X'.  Either way, nothing special to do here.  */
+            continue;
+
+          /* P now points past the opening paren or brace.
+             Count parens or braces until it is matched.  */
+          for (count = 1; *p != '\0'; ++p)
+            {
+              if (*p == closeparen && --count == 0)
+                {
+                  ++p;
+                  break;
+                }
+              if (*p == c)
+                ++count;
+            }
+          continue;
+        }
+
+      /* If we find whitespace skip it, and remember we found it.  */
+      if (ISBLANK (c))
+        {
+          wspace = 1;
+          e = p - 1;
+          NEXT_TOKEN (p);
+          c = *p;
+          if (c == '\0')
+            return NULL;
+          ++p;
+        }
+
+
+      if (c == '=')
+        {
+          var->flavor = f_recursive;
+          if (! e)
+            e = p - 1;
+          break;
+        }
+
+      /* Match assignment variants (:=, +=, ?=, !=)  */
+      if (*p == '=')
+        {
+          switch (c)
+            {
+              case ':':
+                var->flavor = f_simple;
+                break;
+              case '+':
+                var->flavor = f_append;
+                break;
+#ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
+              case '<':
+                var->flavor = f_prepend;
+                break;
+#endif
+              case '?':
+                var->flavor = f_conditional;
+                break;
+              case '!':
+                var->flavor = f_shell;
+                break;
+              default:
+                /* If we skipped whitespace, non-assignments means no var.  */
+                if (wspace)
+                  return NULL;
+
+                /* Might be assignment, or might be $= or #=.  Check.  */
+                continue;
+            }
+          if (! e)
+            e = p - 1;
+          ++p;
+          break;
+        }
+
+      /* Check for POSIX ::= syntax  */
+      if (c == ':')
+        {
+          /* A colon other than :=/::= is not a variable defn.  */
+          if (*p != ':' || p[1] != '=')
+            return NULL;
+
+          /* POSIX allows ::= to be the same as GNU make's := */
+          var->flavor = f_simple;
+          if (! e)
+            e = p - 1;
+          p += 2;
+          break;
+        }
+
+      /* If we skipped whitespace, non-assignments means no var.  */
+      if (wspace)
+        return NULL;
+    }
+
+  var->length = e - var->name;
+  var->value = next_token (p);
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  var->value_alloc_len = ~(unsigned int)0;
+  var->value_length =  -1;
+# ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+  var->rdonly_val = 0;
+# endif
+#endif
+  return (char *)p;
+}
+
+/* Try to interpret LINE (a null-terminated string) as a variable definition.
+
+   If LINE was recognized as a variable definition, a pointer to its 'struct
+   variable' is returned.  If LINE is not a variable definition, NULL is
+   returned.  */
+
+struct variable *
+assign_variable_definition (struct variable *v, const char *line IF_WITH_VALUE_LENGTH_PARAM(char *eos))
+{
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  char *name;
+#endif
+
+  if (!parse_variable_definition (line, v))
+    return NULL;
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+  if (eos)
+    {
+      v->value_length = eos - v->value;
+      assert (strchr (v->value, '\0') == eos);
+    }
+#endif
+
+  /* Expand the name, so "$(foo)bar = baz" works.  */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  name = alloca (v->length + 1);
+  memcpy (name, v->name, v->length);
+  name[v->length] = '\0';
+  v->name = allocated_variable_expand (name);
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+  v->name = allocated_variable_expand_2 (v->name, v->length, NULL);
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+
+  if (v->name[0] == '\0')
+    O (fatal, &v->fileinfo, _("empty variable name"));
+
+  return v;
+}
+
+/* Try to interpret LINE (a null-terminated string) as a variable definition.
+
+   ORIGIN may be o_file, o_override, o_env, o_env_override, o_local,
+   or o_command specifying that the variable definition comes
+   from a makefile, an override directive, the environment with
+   or without the -e switch, or the command line.
+
+   See the comments for assign_variable_definition().
+
+   If LINE was recognized as a variable definition, a pointer to its 'struct
+   variable' is returned.  If LINE is not a variable definition, NULL is
+   returned.  */
+
+struct variable *
+try_variable_definition (const floc *flocp, const char *line
+                         IF_WITH_VALUE_LENGTH_PARAM(char *eos),
+                         enum variable_origin origin, int target_var)
+{
+  struct variable v;
+  struct variable *vp;
+
+  if (flocp != 0)
+    v.fileinfo = *flocp;
+  else
+    v.fileinfo.filenm = 0;
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+  if (!assign_variable_definition (&v, line))
+    return 0;
+
+  vp = do_variable_definition (flocp, v.name, v.value,
+                               origin, v.flavor, target_var);
+#else
+  if (!assign_variable_definition (&v, line, eos))
+    return 0;
+
+  vp = do_variable_definition_2 (flocp, v.name, v.value, v.value_length,
+                                 0, NULL, origin, v.flavor, target_var);
+#endif
+
+#ifndef CONFIG_WITH_STRCACHE2
+  free (v.name);
+#else
+  free ((char *)v.name);
+#endif
+
+  return vp;
+}
+
+#if defined (CONFIG_WITH_COMPILER) || defined (CONFIG_WITH_MAKE_STATS)
+static unsigned long var_stats_evalvals, var_stats_evalvaled;
+static unsigned long var_stats_expands, var_stats_expanded;
+#endif
+#ifdef CONFIG_WITH_COMPILER
+static unsigned long var_stats_expandprogs, var_stats_evalprogs;
+#endif
+#ifdef CONFIG_WITH_MAKE_STATS
+static unsigned long var_stats_changes, var_stats_changed;
+static unsigned long var_stats_reallocs, var_stats_realloced;
+static unsigned long var_stats_references, var_stats_referenced;
+static unsigned long var_stats_val_len, var_stats_val_alloc_len;
+static unsigned long var_stats_val_rdonly_len;
+#endif
+
+/* Print information for variable V, prefixing it with PREFIX.  */
+
+static void
+print_variable (const void *item, void *arg)
+{
+  const struct variable *v = item;
+  const char *prefix = arg;
+  const char *origin;
+#ifdef KMK
+  const struct variable *alias = v;
+  RESOLVE_ALIAS_VARIABLE(v);
+#endif
+
+  switch (v->origin)
+    {
+    case o_automatic:
+      origin = _("automatic");
+      break;
+    case o_default:
+      origin = _("default");
+      break;
+    case o_env:
+      origin = _("environment");
+      break;
+    case o_file:
+      origin = _("makefile");
+      break;
+    case o_env_override:
+      origin = _("environment under -e");
+      break;
+    case o_command:
+      origin = _("command line");
+      break;
+    case o_override:
+      origin = _("'override' directive");
+      break;
+#ifdef CONFIG_WITH_LOCAL_VARIABLES
+    case o_local:
+      origin = _("`local' directive");
+      break;
+#endif
+    case o_invalid:
+    default:
+      abort ();
+    }
+  fputs ("# ", stdout);
+  fputs (origin, stdout);
+  if (v->private_var)
+    fputs (" private", stdout);
+#ifndef KMK
+  if (v->fileinfo.filenm)
+    printf (_(" (from '%s', line %lu)"),
+            v->fileinfo.filenm, v->fileinfo.lineno + v->fileinfo.offset);
+#else  /* KMK */
+  if (alias->fileinfo.filenm)
+    printf (_(" (from '%s', line %lu)"),
+            alias->fileinfo.filenm, alias->fileinfo.lineno);
+  if (alias->aliased)
+    fputs (" aliased", stdout);
+  if (alias->alias)
+    printf (_(", alias for '%s'"), v->name);
+#endif /* KMK */
+
+#if defined (CONFIG_WITH_COMPILER) || defined (CONFIG_WITH_MAKE_STATS)
+  if (v->evalval_count != 0)
+    {
+# ifdef CONFIG_WITH_MAKE_STATS
+      printf (_(", %u evalvals (%llu ticks)"), v->evalval_count, v->cTicksEvalVal);
+# else
+      printf (_(", %u evalvals"), v->evalval_count);
+# endif
+      var_stats_evalvaled++;
+    }
+  var_stats_evalvals += v->evalval_count;
+
+  if (v->expand_count != 0)
+    {
+      printf (_(", %u expands"), v->expand_count);
+      var_stats_expanded++;
+    }
+  var_stats_expands += v->expand_count;
+
+# ifdef CONFIG_WITH_COMPILER
+  if (v->evalprog != 0)
+    {
+      printf (_(", evalprog"));
+      var_stats_evalprogs++;
+    }
+  if (v->expandprog != 0)
+    {
+      printf (_(", expandprog"));
+      var_stats_expandprogs++;
+    }
+# endif
+#endif
+
+#ifdef CONFIG_WITH_MAKE_STATS
+  if (v->changes != 0)
+    {
+      printf (_(", %u changes"), v->changes);
+      var_stats_changed++;
+    }
+  var_stats_changes += v->changes;
+
+  if (v->reallocs != 0)
+    {
+      printf (_(", %u reallocs"), v->reallocs);
+      var_stats_realloced++;
+    }
+  var_stats_reallocs += v->reallocs;
+
+  if (v->references != 0)
+    {
+      printf (_(", %u references"), v->references);
+      var_stats_referenced++;
+    }
+  var_stats_references += v->references;
+
+  var_stats_val_len += v->value_length;
+  if (v->value_alloc_len)
+    var_stats_val_alloc_len += v->value_alloc_len;
+  else
+    var_stats_val_rdonly_len += v->value_length;
+  assert (v->value_length == strlen (v->value));
+  /*assert (v->rdonly_val ? !v->value_alloc_len : v->value_alloc_len > v->value_length); - FIXME */
+#endif /* CONFIG_WITH_MAKE_STATS */
+  putchar ('\n');
+  fputs (prefix, stdout);
+
+  /* Is this a 'define'?  */
+  if (v->recursive && strchr (v->value, '\n') != 0)
+#ifndef KMK /** @todo language feature for aliases */
+    printf ("define %s\n%s\nendef\n", v->name, v->value);
+#else
+    printf ("define %s\n%s\nendef\n", alias->name, v->value);
+#endif
+  else
+    {
+      char *p;
+
+#ifndef KMK /** @todo language feature for aliases */
+      printf ("%s %s= ", v->name, v->recursive ? v->append ? "+" : "" : ":");
+#else
+      printf ("%s %s= ", alias->name, v->recursive ? v->append ? "+" : "" : ":");
+#endif
+
+      /* Check if the value is just whitespace.  */
+      p = next_token (v->value);
+      if (p != v->value && *p == '\0')
+        /* All whitespace.  */
+        printf ("$(subst ,,%s)", v->value);
+      else if (v->recursive)
+        fputs (v->value, stdout);
+      else
+        /* Double up dollar signs.  */
+        for (p = v->value; *p != '\0'; ++p)
+          {
+            if (*p == '$')
+              putchar ('$');
+            putchar (*p);
+          }
+      putchar ('\n');
+    }
+}
+
+
+static void
+print_auto_variable (const void *item, void *arg)
+{
+  const struct variable *v = item;
+
+  if (v->origin == o_automatic)
+    print_variable (item, arg);
+}
+
+
+static void
+print_noauto_variable (const void *item, void *arg)
+{
+  const struct variable *v = item;
+
+  if (v->origin != o_automatic)
+    print_variable (item, arg);
+}
+
+
+/* Print all the variables in SET.  PREFIX is printed before
+   the actual variable definitions (everything else is comments).  */
+
+#ifndef KMK
+static
+#endif
+void
+print_variable_set (struct variable_set *set, const char *prefix, int pauto)
+{
+#if defined (CONFIG_WITH_COMPILER) || defined (CONFIG_WITH_MAKE_STATS)
+  var_stats_expands = var_stats_expanded = var_stats_evalvals
+    = var_stats_evalvaled = 0;
+#endif
+#ifdef CONFIG_WITH_COMPILER
+  var_stats_expandprogs = var_stats_evalprogs = 0;
+#endif
+#ifdef CONFIG_WITH_MAKE_STATS
+  var_stats_changes = var_stats_changed = var_stats_reallocs
+    = var_stats_realloced = var_stats_references = var_stats_referenced
+    = var_stats_val_len = var_stats_val_alloc_len
+    = var_stats_val_rdonly_len = 0;
+#endif
+
+  hash_map_arg (&set->table, (pauto ? print_auto_variable : print_variable),
+                (void *)prefix);
+
+  if (set->table.ht_fill)
+    {
+#ifdef CONFIG_WITH_MAKE_STATS
+      unsigned long fragmentation;
+
+      fragmentation = var_stats_val_alloc_len - (var_stats_val_len - var_stats_val_rdonly_len);
+      printf(_("# variable set value stats:\n\
+#     strings %7lu bytes,       readonly %6lu bytes\n"),
+             var_stats_val_len, var_stats_val_rdonly_len);
+
+      if (var_stats_val_alloc_len)
+        printf(_("#   allocated %7lu bytes,  fragmentation %6lu bytes (%u%%)\n"),
+               var_stats_val_alloc_len, fragmentation,
+               (unsigned int)((100.0 * fragmentation) / var_stats_val_alloc_len));
+
+      if (var_stats_changed)
+        printf(_("#     changed %5lu (%2u%%),          changes %6lu\n"),
+               var_stats_changed,
+               (unsigned int)((100.0 * var_stats_changed) / set->table.ht_fill),
+               var_stats_changes);
+
+      if (var_stats_realloced)
+        printf(_("# reallocated %5lu (%2u%%),    reallocations %6lu\n"),
+               var_stats_realloced,
+               (unsigned int)((100.0 * var_stats_realloced) / set->table.ht_fill),
+               var_stats_reallocs);
+
+      if (var_stats_referenced)
+        printf(_("#  referenced %5lu (%2u%%),       references %6lu\n"),
+               var_stats_referenced,
+               (unsigned int)((100.0 * var_stats_referenced) / set->table.ht_fill),
+               var_stats_references);
+#endif
+#if defined (CONFIG_WITH_COMPILER) || defined (CONFIG_WITH_MAKE_STATS)
+      if (var_stats_evalvals)
+        printf(_("#   evalvaled %5lu (%2u%%),    evalval calls %6lu\n"),
+               var_stats_evalvaled,
+               (unsigned int)((100.0 * var_stats_evalvaled) / set->table.ht_fill),
+               var_stats_evalvals);
+      if (var_stats_expands)
+        printf(_("#    expanded %5lu (%2u%%),          expands %6lu\n"),
+               var_stats_expanded,
+               (unsigned int)((100.0 * var_stats_expanded) / set->table.ht_fill),
+               var_stats_expands);
+#endif
+#ifdef CONFIG_WITH_COMPILER
+      if (var_stats_expandprogs || var_stats_evalprogs)
+        printf(_("#  eval progs %5lu (%2u%%),     expand progs %6lu (%2u%%)\n"),
+               var_stats_evalprogs,
+               (unsigned int)((100.0 * var_stats_evalprogs) / set->table.ht_fill),
+               var_stats_expandprogs,
+               (unsigned int)((100.0 * var_stats_expandprogs) / set->table.ht_fill));
+#endif
+      }
+
+  fputs (_("# variable set hash-table stats:\n"), stdout);
+  fputs ("# ", stdout);
+  hash_print_stats (&set->table, stdout);
+  putc ('\n', stdout);
+}
+
+/* Print the data base of variables.  */
+
+void
+print_variable_data_base (void)
+{
+  puts (_("\n# Variables\n"));
+
+  print_variable_set (&global_variable_set, "", 0);
+
+  puts (_("\n# Pattern-specific Variable Values"));
+
+  {
+    struct pattern_var *p;
+    unsigned int rules = 0;
+
+    for (p = pattern_vars; p != 0; p = p->next)
+      {
+        ++rules;
+        printf ("\n%s :\n", p->target);
+        print_variable (&p->variable, (void *)"# ");
+      }
+
+    if (rules == 0)
+      puts (_("\n# No pattern-specific variable values."));
+    else
+      printf (_("\n# %u pattern-specific variable values"), rules);
+  }
+
+#ifdef CONFIG_WITH_STRCACHE2
+  strcache2_print_stats (&variable_strcache, "# ");
+#endif
+}
+
+#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
+void
+print_variable_stats (void)
+{
+  fputs (_("\n# Global variable hash-table stats:\n# "), stdout);
+  hash_print_stats (&global_variable_set.table, stdout);
+  fputs ("\n", stdout);
+}
+#endif
+
+/* Print all the local variables of FILE.  */
+
+void
+print_file_variables (const struct file *file)
+{
+  if (file->variables != 0)
+    print_variable_set (file->variables->set, "# ", 1);
+}
+
+void
+print_target_variables (const struct file *file)
+{
+  if (file->variables != 0)
+    {
+      int l = strlen (file->name);
+      char *t = alloca (l + 3);
+
+      strcpy (t, file->name);
+      t[l] = ':';
+      t[l+1] = ' ';
+      t[l+2] = '\0';
+
+      hash_map_arg (&file->variables->set->table, print_noauto_variable, t);
+    }
+}
+
+#ifdef WINDOWS32
+void
+sync_Path_environment (void)
+{
+  char *path = allocated_variable_expand ("$(PATH)");
+  static char *environ_path = NULL;
+
+  if (!path)
+    return;
+
+  /* If done this before, free the previous entry before allocating new one.  */
+  free (environ_path);
+
+  /* Create something WINDOWS32 world can grok.  */
+  convert_Path_to_windows32 (path, ';');
+  environ_path = xstrdup (concat (3, "PATH", "=", path));
+  putenv (environ_path);
+  free (path);
+}
+#endif
diff --git a/src/kmk/variable.h b/src/kmk/variable.h
new file mode 100644
index 0000000..db13b92
--- /dev/null
+++ b/src/kmk/variable.h
@@ -0,0 +1,551 @@
+/* Definitions for using variables in GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "hash.h"
+#ifdef CONFIG_WITH_COMPILER
+# include "kmk_cc_exec.h"
+#endif
+
+/* Codes in a variable definition saying where the definition came from.
+   Increasing numeric values signify less-overridable definitions.  */
+enum variable_origin
+  {
+    o_default,          /* Variable from the default set.  */
+    o_env,              /* Variable from environment.  */
+    o_file,             /* Variable given in a makefile.  */
+    o_env_override,     /* Variable from environment, if -e.  */
+    o_command,          /* Variable given by user.  */
+    o_override,         /* Variable from an 'override' directive.  */
+#ifdef CONFIG_WITH_LOCAL_VARIABLES
+    o_local,            /* Variable from an 'local' directive.  */
+#endif
+    o_automatic,        /* Automatic variable -- cannot be set.  */
+    o_invalid           /* Core dump time.  */
+  };
+
+enum variable_flavor
+  {
+    f_bogus,            /* Bogus (error) */
+    f_simple,           /* Simple definition (:= or ::=) */
+    f_recursive,        /* Recursive definition (=) */
+    f_append,           /* Appending definition (+=) */
+#ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
+    f_prepend,          /* Prepending definition (>=) */
+#endif
+    f_conditional,      /* Conditional definition (?=) */
+    f_shell             /* Shell assignment (!=) */
+  };
+
+/* Structure that represents one variable definition.
+   Each bucket of the hash table is a chain of these,
+   chained through 'next'.  */
+
+#define EXP_COUNT_BITS  15      /* This gets all the bitfields into 32 bits */
+#define EXP_COUNT_MAX   ((1<<EXP_COUNT_BITS)-1)
+#ifdef CONFIG_WITH_VALUE_LENGTH
+# define VAR_ALIGN_VALUE_ALLOC(len)  ( ((len) + (unsigned int)15) & ~(unsigned int)15 )
+#endif
+
+struct variable
+  {
+#ifndef CONFIG_WITH_STRCACHE2
+    char *name;                 /* Variable name.  */
+#else
+    const char *name;		/* Variable name (in varaible_strcache).  */
+#endif
+    char *value;                /* Variable value.  */
+    floc fileinfo;              /* Where the variable was defined.  */
+    int length;                 /* strlen (name) */
+#ifdef CONFIG_WITH_VALUE_LENGTH
+    unsigned int value_length;	/* The length of the value.  */
+    unsigned int value_alloc_len; /* The amount of memory we've actually allocated. */
+    /* FIXME: make lengths unsigned! */
+#endif
+    unsigned int recursive:1;   /* Gets recursively re-evaluated.  */
+    unsigned int append:1;      /* Nonzero if an appending target-specific
+                                   variable.  */
+    unsigned int conditional:1; /* Nonzero if set with a ?=. */
+    unsigned int per_target:1;  /* Nonzero if a target-specific variable.  */
+    unsigned int special:1;     /* Nonzero if this is a special variable. */
+    unsigned int exportable:1;  /* Nonzero if the variable _could_ be
+                                   exported.  */
+    unsigned int expanding:1;   /* Nonzero if currently being expanded.  */
+    unsigned int private_var:1; /* Nonzero avoids inheritance of this
+                                   target-specific variable.  */
+    unsigned int exp_count:EXP_COUNT_BITS;
+                                /* If >1, allow this many self-referential
+                                   expansions.  */
+#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
+    unsigned int rdonly_val:1;  /* VALUE is read only (strcache/const). */
+#endif
+#ifdef KMK
+    unsigned int alias:1;       /* Nonzero if alias. VALUE points to the real variable. */
+    unsigned int aliased:1;     /* Nonzero if aliased. Cannot be undefined. */
+#endif
+    enum variable_flavor
+      flavor ENUM_BITFIELD (3); /* Variable flavor.  */
+    enum variable_origin
+#ifdef CONFIG_WITH_LOCAL_VARIABLES
+      origin ENUM_BITFIELD (4);	/* Variable origin.  */
+#else
+      origin ENUM_BITFIELD (3); /* Variable origin.  */
+#endif
+    enum variable_export
+      {
+        v_export,               /* Export this variable.  */
+        v_noexport,             /* Don't export this variable.  */
+        v_ifset,                /* Export it if it has a non-default value.  */
+        v_default               /* Decide in target_environment.  */
+      } export ENUM_BITFIELD (2);
+#ifdef CONFIG_WITH_COMPILER
+    int recursive_without_dollar : 2; /* 0 if undetermined, 1 if value has no '$' chars, -1 if it has. */
+#endif
+#ifdef CONFIG_WITH_MAKE_STATS
+    unsigned int changes;      /* Variable modification count.  */
+    unsigned int reallocs;     /* Realloc on value count.  */
+    unsigned int references;   /* Lookup count.  */
+    unsigned long long cTicksEvalVal; /* Number of ticks spend in cEvalVal. */
+#endif
+#if defined (CONFIG_WITH_COMPILER) || defined (CONFIG_WITH_MAKE_STATS)
+    unsigned int evalval_count; /* Times used with $(evalval ) or $(evalctx ) since last change. */
+    unsigned int expand_count;  /* Times expanded since last change (not to be confused with exp_count). */
+#endif
+#ifdef CONFIG_WITH_COMPILER
+    struct kmk_cc_evalprog *evalprog;     /* Pointer to evalval/evalctx "program". */
+    struct kmk_cc_expandprog *expandprog; /* Pointer to variable expand "program". */
+#endif
+  };
+
+/* Update statistics and invalidates optimizations when a variable changes. */
+#ifdef CONFIG_WITH_COMPILER
+# define VARIABLE_CHANGED(v) \
+  do { \
+      MAKE_STATS_2((v)->changes++); \
+      if ((v)->evalprog || (v)->expandprog) kmk_cc_variable_changed(v); \
+      (v)->expand_count = 0; \
+      (v)->evalval_count = 0; \
+      (v)->recursive_without_dollar = 0; \
+    } while (0)
+#else
+# define VARIABLE_CHANGED(v) MAKE_STATS_2((v)->changes++)
+#endif
+
+/* Macro that avoids a lot of CONFIG_WITH_COMPILER checks when
+   accessing recursive_without_dollar. */
+#ifdef CONFIG_WITH_COMPILER
+# define IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR(v) ((v)->recursive_without_dollar > 0)
+#else
+# define IS_VARIABLE_RECURSIVE_WITHOUT_DOLLAR(v) 0
+#endif
+
+
+
+/* Structure that represents a variable set.  */
+
+struct variable_set
+  {
+    struct hash_table table;    /* Hash table of variables.  */
+  };
+
+/* Structure that represents a list of variable sets.  */
+
+struct variable_set_list
+  {
+    struct variable_set_list *next;     /* Link in the chain.  */
+    struct variable_set *set;           /* Variable set.  */
+    int next_is_parent;                 /* True if next is a parent target.  */
+  };
+
+/* Structure used for pattern-specific variables.  */
+
+struct pattern_var
+  {
+    struct pattern_var *next;
+    const char *suffix;
+    const char *target;
+    unsigned int len;
+    struct variable variable;
+  };
+
+extern char *variable_buffer;
+extern struct variable_set_list *current_variable_set_list;
+extern struct variable *default_goal_var;
+extern struct variable shell_var;
+
+#ifdef KMK
+extern struct variable_set global_variable_set;
+extern struct variable_set_list global_setlist;
+extern unsigned int variable_buffer_length;
+# define VARIABLE_BUFFER_ZONE   5
+#endif
+
+/* expand.c */
+#ifndef KMK
+char *
+variable_buffer_output (char *ptr, const char *string, unsigned int length);
+#else /* KMK */
+# include <k/kDefs.h>
+/* Subroutine of variable_expand and friends:
+   The text to add is LENGTH chars starting at STRING to the variable_buffer.
+   The text is added to the buffer at PTR, and the updated pointer into
+   the buffer is returned as the value.  Thus, the value returned by
+   each call to variable_buffer_output should be the first argument to
+   the following call.  */
+
+K_INLINE char *variable_buffer_output (char *ptr, const char *string, unsigned int length)
+{
+  register unsigned int newlen = length + (ptr - variable_buffer);
+
+  if ((newlen + VARIABLE_BUFFER_ZONE) > variable_buffer_length)
+    {
+      unsigned int offset = ptr - variable_buffer;
+      variable_buffer_length = variable_buffer_length <= 1024
+                             ? 2048 : variable_buffer_length * 4;
+      if (variable_buffer_length < newlen + 100)
+          variable_buffer_length = (newlen + 100 + 1023) & ~1023U;
+      variable_buffer = xrealloc (variable_buffer, variable_buffer_length);
+      ptr = variable_buffer + offset;
+    }
+
+# ifndef _MSC_VER
+  switch (length)
+    {
+      case 4: ptr[3] = string[3]; /* fall thru */
+      case 3: ptr[2] = string[2]; /* fall thru */
+      case 2: ptr[1] = string[1]; /* fall thru */
+      case 1: ptr[0] = string[0]; /* fall thru */
+      case 0:
+          break;
+      default:
+          memcpy (ptr, string, length);
+          break;
+    }
+# else
+  memcpy (ptr, string, length);
+# endif
+  return ptr + length;
+}
+#endif /* KMK */
+
+char *variable_expand (const char *line);
+char *variable_expand_for_file (const char *line, struct file *file);
+#if defined (CONFIG_WITH_VALUE_LENGTH) || defined (CONFIG_WITH_COMMANDS_FUNC)
+char *variable_expand_for_file_2 (char *o, const char *line, unsigned int lenght,
+                                  struct file *file, unsigned int *value_lenp);
+#endif
+char *allocated_variable_expand_for_file (const char *line, struct file *file);
+#ifndef CONFIG_WITH_VALUE_LENGTH
+#define allocated_variable_expand(line) \
+  allocated_variable_expand_for_file (line, (struct file *) 0)
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+# define allocated_variable_expand(line) \
+  allocated_variable_expand_2 (line, -1, NULL)
+char *allocated_variable_expand_2 (const char *line, unsigned int length, unsigned int *value_lenp);
+char *allocated_variable_expand_3 (const char *line, unsigned int length,
+                                   unsigned int *value_lenp, unsigned int *buffer_lengthp);
+void recycle_variable_buffer (char *buffer, unsigned int length);
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+char *expand_argument (const char *str, const char *end);
+#ifndef CONFIG_WITH_VALUE_LENGTH
+char *
+variable_expand_string (char *line, const char *string, long length);
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+# include <k/kDefs.h>
+char *
+variable_expand_string_2 (char *line, const char *string, long length, char **eol);
+K_INLINE char *variable_expand_string (char *line, const char *string, long length)
+{
+    char *ignored;
+    return variable_expand_string_2 (line, string, length, &ignored);
+}
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+void install_variable_buffer (char **bufp, unsigned int *lenp);
+void restore_variable_buffer (char *buf, unsigned int len);
+char *install_variable_buffer_with_hint (char **bufp, unsigned int *lenp, unsigned int size_hint); /* bird */
+char *ensure_variable_buffer_space (char *ptr, unsigned int size); /* bird */
+#ifdef CONFIG_WITH_VALUE_LENGTH
+void append_expanded_string_to_variable (struct variable *v, const char *value,
+                                         unsigned int value_len, int append);
+#endif
+
+/* function.c */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+int handle_function (char **op, const char **stringp);
+#else
+int handle_function (char **op, const char **stringp, const char *nameend, const char *eol);
+#endif
+#ifdef CONFIG_WITH_COMPILER
+typedef char *(*make_function_ptr_t) (char *, char **, const char *);
+make_function_ptr_t lookup_function_for_compiler (const char *name, unsigned int len,
+                                                  unsigned char *minargsp, unsigned char *maxargsp,
+                                                  char *expargsp, const char **funcnamep);
+#endif
+int pattern_matches (const char *pattern, const char *percent, const char *str);
+char *subst_expand (char *o, const char *text, const char *subst,
+                    const char *replace, unsigned int slen, unsigned int rlen,
+                    int by_word);
+char *patsubst_expand_pat (char *o, const char *text, const char *pattern,
+                           const char *replace, const char *pattern_percent,
+                           const char *replace_percent);
+char *patsubst_expand (char *o, const char *text, char *pattern, char *replace);
+char *func_shell_base (char *o, char **argv, int trim_newlines);
+void shell_completed (int exit_code, int exit_sig);
+
+#ifdef CONFIG_WITH_COMMANDS_FUNC /* for append.c */
+char *func_commands (char *o, char **argv, const char *funcname);
+#endif
+
+#if defined (CONFIG_WITH_VALUE_LENGTH)
+/* Avoid calling handle_function for every variable, do the
+   basic checks in variable_expand_string_2. */
+extern char func_char_map[256];
+# define MAX_FUNCTION_LENGTH    14
+# define MIN_FUNCTION_LENGTH    2
+K_INLINE const char *may_be_function_name (const char *name, const char *eos)
+{
+  unsigned char ch;
+  unsigned int len = name - eos;
+
+  /* Minimum length is MIN + whitespace. Check this directly.
+     ASSUMES: MIN_FUNCTION_LENGTH == 2 */
+
+  if (MY_PREDICT_TRUE(len < MIN_FUNCTION_LENGTH + 1
+                      || !func_char_map[(int)(name[0])]
+                      || !func_char_map[(int)(name[1])]))
+    return 0;
+  if (MY_PREDICT_TRUE(!func_char_map[ch = name[2]]))
+    return ISSPACE (ch) ? name + 2 : 0;
+
+  name += 3;
+  if (len > MAX_FUNCTION_LENGTH)
+    len = MAX_FUNCTION_LENGTH - 3;
+  else if (len == 3)
+    len -= 3;
+  if (!len)
+    return 0;
+
+  /* Loop over the remaining possiblities. */
+
+  while (func_char_map[ch = *name])
+    {
+      if (!len--)
+        return 0;
+      name++;
+    }
+  if (ch == '\0' || ISBLANK (ch))
+    return name;
+  return 0;
+}
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+
+/* expand.c */
+#ifndef CONFIG_WITH_VALUE_LENGTH
+char *recursively_expand_for_file (struct variable *v, struct file *file);
+#define recursively_expand(v)   recursively_expand_for_file (v, NULL)
+#else
+char *recursively_expand_for_file (struct variable *v, struct file *file,
+                                   unsigned int *value_lenp);
+# define recursively_expand(v)  recursively_expand_for_file (v, NULL, NULL)
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+#ifdef CONFIG_WITH_COMPILER
+char *reference_recursive_variable (char *o, struct variable *v);
+#endif
+
+/* variable.c */
+struct variable_set_list *create_new_variable_set (void);
+void free_variable_set (struct variable_set_list *);
+struct variable_set_list *push_new_variable_scope (void);
+void pop_variable_scope (void);
+void define_automatic_variables (void);
+void initialize_file_variables (struct file *file, int reading);
+void print_file_variables (const struct file *file);
+void print_target_variables (const struct file *file);
+void merge_variable_set_lists (struct variable_set_list **to_list,
+                               struct variable_set_list *from_list);
+#ifdef KMK
+void print_variable_set (struct variable_set *set, const char *prefix, int pauto);
+#endif
+
+#ifndef CONFIG_WITH_VALUE_LENGTH
+struct variable *do_variable_definition (const floc *flocp,
+                                         const char *name, const char *value,
+                                         enum variable_origin origin,
+                                         enum variable_flavor flavor,
+                                         int target_var);
+#else  /* CONFIG_WITH_VALUE_LENGTH */
+# define do_variable_definition(flocp, varname, value, origin, flavor, target_var) \
+    do_variable_definition_2 ((flocp), (varname), (value), ~0U, 0, NULL, \
+                              (origin), (flavor), (target_var))
+struct variable *do_variable_definition_2 (const floc *flocp,
+                                           const char *varname,
+                                           const char *value,
+                                           unsigned int value_len,
+                                           int simple_value, char *free_value,
+                                           enum variable_origin origin,
+                                           enum variable_flavor flavor,
+                                           int target_var);
+#endif /* CONFIG_WITH_VALUE_LENGTH */
+char *parse_variable_definition (const char *line,
+                                 struct variable *v);
+struct variable *assign_variable_definition (struct variable *v, const char *line IF_WITH_VALUE_LENGTH_PARAM(char *eos));
+struct variable *try_variable_definition (const floc *flocp, const char *line
+                                          IF_WITH_VALUE_LENGTH_PARAM(char *eos),
+                                          enum variable_origin origin,
+                                          int target_var);
+void init_hash_global_variable_set (void);
+void hash_init_function_table (void);
+void define_new_function(const floc *flocp, const char *name,
+                         unsigned int min, unsigned int max, unsigned int flags,
+                         gmk_func_ptr func);
+struct variable *lookup_variable (const char *name, unsigned int length);
+struct variable *lookup_variable_in_set (const char *name, unsigned int length,
+                                         const struct variable_set *set);
+#ifdef CONFIG_WITH_STRCACHE2
+struct variable *lookup_variable_strcached (const char *name);
+#endif
+
+#ifdef CONFIG_WITH_VALUE_LENGTH
+void append_string_to_variable (struct variable *v, const char *value,
+                                unsigned int value_len, int append);
+struct variable * do_variable_definition_append (const floc *flocp, struct variable *v,
+                                                 const char *value, unsigned int value_len,
+                                                 int simple_value, enum variable_origin origin,
+                                                 int append);
+
+struct variable *define_variable_in_set (const char *name, unsigned int length,
+                                         const char *value,
+                                         unsigned int value_length,
+                                         int duplicate_value,
+                                         enum variable_origin origin,
+                                         int recursive,
+                                         struct variable_set *set,
+                                         const floc *flocp);
+
+/* Define a variable in the current variable set.  */
+
+#define define_variable(n,l,v,o,r) \
+          define_variable_in_set((n),(l),(v),~0U,1,(o),(r),\
+                                 current_variable_set_list->set,NILF)
+
+#define define_variable_vl(n,l,v,vl,dv,o,r) \
+          define_variable_in_set((n),(l),(v),(vl),(dv),(o),(r),\
+                                 current_variable_set_list->set,NILF)
+
+/* Define a variable with a constant name in the current variable set.  */
+
+#define define_variable_cname(n,v,o,r) \
+          define_variable_in_set((n),(sizeof (n) - 1),(v),~0U,1,(o),(r),\
+                                 current_variable_set_list->set,NILF)
+
+/* Define a variable with a location in the current variable set.  */
+
+#define define_variable_loc(n,l,v,o,r,f) \
+          define_variable_in_set((n),(l),(v),~0U,1,(o),(r),\
+                                 current_variable_set_list->set,(f))
+
+/* Define a variable with a location in the global variable set.  */
+
+#define define_variable_global(n,l,v,o,r,f) \
+          define_variable_in_set((n),(l),(v),~0U,1,(o),(r),NULL,(f))
+
+#define define_variable_vl_global(n,l,v,vl,dv,o,r,f) \
+          define_variable_in_set((n),(l),(v),(vl),(dv),(o),(r),NULL,(f))
+
+/* Define a variable in FILE's variable set.  */
+
+#define define_variable_for_file(n,l,v,o,r,f) \
+          define_variable_in_set((n),(l),(v),~0U,1,(o),(r),(f)->variables->set,NILF)
+
+#else  /* !CONFIG_WITH_VALUE_LENGTH */
+
+struct variable *define_variable_in_set (const char *name, unsigned int length,
+                                         const char *value,
+                                         enum variable_origin origin,
+                                         int recursive,
+                                         struct variable_set *set,
+                                         const floc *flocp);
+
+/* Define a variable in the current variable set.  */
+
+#define define_variable(n,l,v,o,r) \
+          define_variable_in_set((n),(l),(v),(o),(r),\
+                                 current_variable_set_list->set,NILF)           /* force merge conflict */
+
+/* Define a variable with a constant name in the current variable set.  */
+
+#define define_variable_cname(n,v,o,r) \
+          define_variable_in_set((n),(sizeof (n) - 1),(v),(o),(r),\
+                                 current_variable_set_list->set,NILF)           /* force merge conflict */
+
+/* Define a variable with a location in the current variable set.  */
+
+#define define_variable_loc(n,l,v,o,r,f) \
+          define_variable_in_set((n),(l),(v),(o),(r),\
+                                 current_variable_set_list->set,(f))            /* force merge conflict */
+
+/* Define a variable with a location in the global variable set.  */
+
+#define define_variable_global(n,l,v,o,r,f) \
+          define_variable_in_set((n),(l),(v),(o),(r),NULL,(f))                  /* force merge conflict */
+
+/* Define a variable in FILE's variable set.  */
+
+#define define_variable_for_file(n,l,v,o,r,f) \
+          define_variable_in_set((n),(l),(v),(o),(r),(f)->variables->set,NILF)  /* force merge conflict */
+
+#endif /* !CONFIG_WITH_VALUE_LENGTH */
+
+void undefine_variable_in_set (const char *name, unsigned int length,
+                               enum variable_origin origin,
+                               struct variable_set *set);
+
+/* Remove variable from the current variable set. */
+
+#define undefine_variable_global(n,l,o) \
+          undefine_variable_in_set((n),(l),(o),NULL)
+
+#ifdef KMK
+struct variable *
+define_variable_alias_in_set (const char *name, unsigned int length,
+                              struct variable *target, enum variable_origin origin,
+                              struct variable_set *set, const floc *flocp);
+#endif
+
+/* Warn that NAME is an undefined variable.  */
+
+#define warn_undefined(n,l) do{\
+                              if (warn_undefined_variables_flag)        \
+                                error (reading_file, (l),               \
+                                       _("warning: undefined variable '%.*s'"), \
+                                       (int)(l), (n));                  \
+                              }while(0)
+
+char **target_environment (struct file *file);
+
+struct pattern_var *create_pattern_var (const char *target,
+                                        const char *suffix);
+
+extern int export_all_variables;
+#ifdef CONFIG_WITH_STRCACHE2
+extern struct strcache2 variable_strcache;
+#endif
+
+#ifdef KMK
+# define MAKELEVEL_NAME "KMK_LEVEL"
+#else
+#define MAKELEVEL_NAME "MAKELEVEL"
+#endif
+#define MAKELEVEL_LENGTH (CSTRLEN (MAKELEVEL_NAME))
diff --git a/src/kmk/version.c b/src/kmk/version.c
new file mode 100644
index 0000000..e6d822d
--- /dev/null
+++ b/src/kmk/version.c
@@ -0,0 +1,33 @@
+/* Record version and build host architecture for GNU make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* We use <config.h> instead of "config.h" so that a compilation
+   using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
+   (which it would do because makeint.h was found in $srcdir).  */
+#include <config.h>
+
+#ifndef MAKE_HOST
+# define MAKE_HOST "unknown"
+#endif
+
+const char *version_string = VERSION;
+const char *make_host = MAKE_HOST;
+
+/*
+  Local variables:
+  version-control: never
+  End:
+ */
diff --git a/src/kmk/vms_exit.c b/src/kmk/vms_exit.c
new file mode 100644
index 0000000..b08d84d
--- /dev/null
+++ b/src/kmk/vms_exit.c
@@ -0,0 +1,95 @@
+/* vms_exit.c
+ *
+ * Wrapper for the VMS exit() command to tranlate UNIX codes to be
+ * encoded for POSIX, but also have VMS severity levels.
+ * The posix_exit() variant only sets a severity level for status code 1.
+ *
+ * Author: John E. Malmberg
+ */
+
+/* Copyright (C) 2014-2016 Free Software Foundation, Inc.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Per copyright assignment agreement with the Free Software Foundation
+   this software may be available under under other license agreements
+   and copyrights. */
+
+#include <makeint.h>
+
+#include <stsdef.h>
+void
+decc$exit (int status);
+#ifndef C_FACILITY_NO
+# define C_FACILITY_NO 0x350000
+#endif
+
+/* Lowest legal non-success VMS exit code is 8 */
+/* GNU make only defines codes 0, 1, 2 */
+/* So assume any exit code > 8 is a VMS exit code */
+
+#ifndef MAX_EXPECTED_EXIT_CODE
+# define MAX_EXPECTED_EXIT_CODE 7
+#endif
+
+/* Build a Posix Exit with VMS severity */
+void
+vms_exit (int status)
+{
+  int vms_status;
+  /* Fake the __posix_exit with severity added */
+  /* Undocumented correct way to do this. */
+  vms_status = 0;
+
+  /* The default DECC definition is not compatible with doing a POSIX_EXIT */
+  /* So fix it. */
+  if (status == EXIT_FAILURE)
+    status = MAKE_FAILURE;
+
+  /* Trivial case exit success */
+  if (status == 0)
+    decc$exit (STS$K_SUCCESS);
+
+  /* Is this a VMS status then just take it */
+  if (status > MAX_EXPECTED_EXIT_CODE)
+    {
+      /* Make sure that the message inhibit is set since message has */
+      /* already been displayed. */
+      vms_status = status | STS$M_INHIB_MSG;
+      decc$exit (vms_status);
+    }
+
+  /* Unix status codes are limited to 1 byte, so anything larger */
+  /* is a probably a VMS exit code and needs to be passed through */
+  /* A lower value can be set for a macro. */
+  /* Status 0 is always passed through as it is converted to SS$_NORMAL */
+  /* Always set the message inhibit bit */
+  vms_status = C_FACILITY_NO | 0xA000 | STS$M_INHIB_MSG;
+  vms_status |= (status << 3);
+
+  /* STS$K_ERROR is for status that stops makefile that a simple */
+  /* Rerun of the makefile will not fix. */
+
+  if (status == MAKE_FAILURE)
+    vms_status |= STS$K_ERROR;
+  else if (status == MAKE_TROUBLE)
+    {
+      /* Make trouble is for when make was told to do nothing and */
+      /* found that a target was not up to date.  Since a second */
+      /* of make will produce the same condition, this is of */
+      /* Error severity */
+      vms_status |= STS$K_ERROR;
+    }
+  decc$exit (vms_status);
+}
diff --git a/src/kmk/vms_export_symbol.c b/src/kmk/vms_export_symbol.c
new file mode 100644
index 0000000..954f3f4
--- /dev/null
+++ b/src/kmk/vms_export_symbol.c
@@ -0,0 +1,527 @@
+/* File: vms_export_symbol.c
+ *
+ * Some programs need special environment variables deported as DCL
+ * DCL symbols.
+ */
+
+/* Copyright (C) 2014-2016 Free Software Foundation, Inc.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Per copyright assignment agreement with the Free Software Foundation
+   this software may be available under under other license agreements
+   and copyrights. */
+
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <descrip.h>
+#include <stsdef.h>
+#include <ssdef.h>
+#include <unixlib.h>
+#include <libclidef.h>
+
+#pragma member_alignment save
+#pragma nomember_alignment longword
+struct item_list_3
+{
+  unsigned short len;
+  unsigned short code;
+  void * bufadr;
+  unsigned short * retlen;
+};
+
+
+#pragma member_alignment
+
+int
+LIB$GET_SYMBOL (const struct dsc$descriptor_s * symbol,
+                struct dsc$descriptor_s * value,
+                unsigned short * value_len,
+                const unsigned long * table);
+
+int
+LIB$SET_SYMBOL (const struct dsc$descriptor_s * symbol,
+                const struct dsc$descriptor_s * value,
+                const unsigned long * table);
+
+int
+LIB$DELETE_SYMBOL (const struct dsc$descriptor_s * symbol,
+                   const unsigned long * table);
+
+#define MAX_DCL_SYMBOL_LEN (255)
+#if __CRTL_VER >= 70302000 && !defined(__VAX)
+# define MAX_DCL_SYMBOL_VALUE (8192)
+#else
+# define MAX_DCL_SYMBOL_VALUE (1024)
+#endif
+
+struct dcl_symbol
+{
+  struct dcl_symbol * link;
+  struct dsc$descriptor_s name_desc;
+  struct dsc$descriptor_s value_desc;
+  char name[MAX_DCL_SYMBOL_LEN + 1];    /* + 1 byte for null terminator */
+  char value[MAX_DCL_SYMBOL_VALUE +1];  /* + 1 byte for null terminator */
+  char pad[3]; /* Pad structure to longword allignment */
+};
+
+static struct dcl_symbol * vms_dcl_symbol_head = NULL;
+
+/* Restore symbol state to original condition. */
+static unsigned long
+clear_dcl_symbol (struct dcl_symbol * symbol)
+{
+
+  const unsigned long symtbl = LIB$K_CLI_LOCAL_SYM;
+  int status;
+
+  if (symbol->value_desc.dsc$w_length == (unsigned short)-1)
+    status = LIB$DELETE_SYMBOL (&symbol->name_desc, &symtbl);
+  else
+    status = LIB$SET_SYMBOL (&symbol->name_desc,
+                             &symbol->value_desc, &symtbl);
+  return status;
+}
+
+
+/* Restore all exported symbols to their original conditions */
+static void
+clear_exported_symbols (void)
+{
+
+  struct dcl_symbol * symbol;
+
+  symbol = vms_dcl_symbol_head;
+
+  /* Walk the list of symbols.  This is done durring exit,
+   * so no need to free memory.
+   */
+  while (symbol != NULL)
+  {
+    clear_dcl_symbol (symbol);
+    symbol = symbol->link;
+  }
+
+}
+
+
+/* Restore the symbol back to the original value
+ * symbol name is either a plain name or of the form "symbol=name" where
+ * the name portion is ignored.
+ */
+void
+vms_restore_symbol (const char * string)
+{
+
+  struct dcl_symbol * symbol;
+  char name[MAX_DCL_SYMBOL_LEN + 1];
+  int status;
+  char * value;
+  int name_len;
+
+  symbol = vms_dcl_symbol_head;
+
+  /* Isolate the name from the value */
+  value = strchr (string, '=');
+  if (value != NULL)
+    {
+      /* Copy the name from the string */
+      name_len = (value - string);
+    }
+  else
+    name_len = strlen (string);
+
+  if (name_len > MAX_DCL_SYMBOL_LEN)
+    name_len = MAX_DCL_SYMBOL_LEN;
+
+  strncpy (name, string, name_len);
+  name[name_len] = 0;
+
+  /* Walk the list of symbols.  The saved symbol is not freed
+   * symbols are likely to be overwritten multiple times, so this
+   * saves time in saving them each time.
+   */
+  while (symbol != NULL)
+    {
+      int result;
+      result = strcmp (symbol->name, name);
+      if (result == 0)
+        {
+          clear_dcl_symbol (symbol);
+          break;
+        }
+      symbol = symbol->link;
+    }
+}
+
+int
+vms_export_dcl_symbol (const char * name, const char * value)
+{
+
+  struct dcl_symbol * symbol;
+  struct dcl_symbol * next;
+  struct dcl_symbol * link;
+  int found;
+  const unsigned long symtbl = LIB$K_CLI_LOCAL_SYM;
+  struct dsc$descriptor_s value_desc;
+  int string_len;
+  int status;
+  char new_value[MAX_DCL_SYMBOL_VALUE + 1];
+  char * dollarp;
+
+  next = vms_dcl_symbol_head;
+  link = vms_dcl_symbol_head;
+
+  /* Is symbol already exported? */
+  found = 0;
+  while ((found == 0) && (link != NULL))
+    {
+      int x;
+      found = !strncasecmp (link->name, name, MAX_DCL_SYMBOL_LEN);
+      if (found)
+        symbol = link;
+      next = link;
+      link = link->link;
+    }
+
+  /* New symbol, set it up */
+  if (found == 0)
+    {
+      symbol = malloc (sizeof (struct dcl_symbol));
+      if (symbol == NULL)
+        return SS$_INSFMEM;
+
+      /* Construct the symbol descriptor, used for both saving
+       * the old symbol and creating the new symbol.
+       */
+      symbol->name_desc.dsc$w_length = strlen (name);
+      if (symbol->name_desc.dsc$w_length > MAX_DCL_SYMBOL_LEN)
+        symbol->name_desc.dsc$w_length = MAX_DCL_SYMBOL_LEN;
+
+      strncpy (symbol->name, name, symbol->name_desc.dsc$w_length);
+      symbol->name[symbol->name_desc.dsc$w_length] = 0;
+      symbol->name_desc.dsc$a_pointer = symbol->name;
+      symbol->name_desc.dsc$b_dtype = DSC$K_DTYPE_T;
+      symbol->name_desc.dsc$b_class = DSC$K_CLASS_S;
+
+      /* construct the value descriptor, used only for saving
+       * the old symbol.
+       */
+      symbol->value_desc.dsc$a_pointer = symbol->value;
+      symbol->value_desc.dsc$w_length = MAX_DCL_SYMBOL_VALUE;
+      symbol->value_desc.dsc$b_dtype = DSC$K_DTYPE_T;
+      symbol->value_desc.dsc$b_class = DSC$K_CLASS_S;
+    }
+
+  if (found == 0)
+    {
+      unsigned long old_symtbl;
+      unsigned short value_len;
+
+      /* Look up the symbol */
+      status = LIB$GET_SYMBOL (&symbol->name_desc, &symbol->value_desc,
+                               &value_len, &old_symtbl);
+      if (!$VMS_STATUS_SUCCESS (status))
+        value_len = (unsigned short)-1;
+      else if (old_symtbl != symtbl)
+        value_len = (unsigned short)-1;
+
+      symbol->value_desc.dsc$w_length = value_len;
+
+      /* Store it away */
+      if (value_len != (unsigned short) -1)
+        symbol->value[value_len] = 0;
+
+      /* Make sure atexit scheduled */
+      if (vms_dcl_symbol_head == NULL)
+        {
+          vms_dcl_symbol_head = symbol;
+          atexit (clear_exported_symbols);
+        }
+      else
+        {
+          /* Extend the chain */
+          next->link = symbol;
+        }
+    }
+
+  /* Create or replace a symbol */
+  value_desc.dsc$a_pointer = new_value;
+  string_len = strlen (value);
+  if (string_len > MAX_DCL_SYMBOL_VALUE)
+    string_len = MAX_DCL_SYMBOL_VALUE;
+
+  strncpy (new_value, value, string_len);
+  new_value[string_len] = 0;
+
+  /* Special handling for GNU Make.  GNU Make doubles the dollar signs
+   * in environment variables read in from getenv().  Make exports symbols
+   * with the dollar signs already doubled.  So all $$ must be converted
+   * back to $.
+   * If the first $ is not doubled, then do not convert at all.
+   */
+  dollarp = strchr (new_value, '$');
+  while (dollarp && dollarp[1] == '$')
+    {
+      int left;
+      dollarp++;
+      left = string_len - (dollarp - new_value - 1);
+      string_len--;
+      if (left > 0)
+        {
+          memmove (dollarp, &dollarp[1], left);
+          dollarp = strchr (&dollarp[1], '$');
+        }
+      else
+        {
+          /* Ended with $$, simple case */
+          dollarp[1] = 0;
+          break;
+        }
+    }
+  value_desc.dsc$w_length = string_len;
+  value_desc.dsc$b_dtype = DSC$K_DTYPE_T;
+  value_desc.dsc$b_class = DSC$K_CLASS_S;
+  status = LIB$SET_SYMBOL (&symbol->name_desc, &value_desc, &symtbl);
+  return status;
+}
+
+/* export a DCL symbol using a string in the same syntax as putenv */
+int
+vms_putenv_symbol (const char * string)
+{
+
+  char name[MAX_DCL_SYMBOL_LEN + 1];
+  int status;
+  char * value;
+  int name_len;
+
+  /* Isolate the name from the value */
+  value = strchr (string, '=');
+  if (value == NULL)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  /* Copy the name from the string */
+  name_len = (value - string);
+  if (name_len > MAX_DCL_SYMBOL_LEN)
+    name_len = MAX_DCL_SYMBOL_LEN;
+
+  strncpy (name, string, name_len);
+  name[name_len] = 0;
+
+  /* Skip past the "=" */
+  value++;
+
+  /* Export the symbol */
+  status = vms_export_dcl_symbol (name, value);
+
+  /* Convert the error to Unix format */
+  if (!$VMS_STATUS_SUCCESS (status))
+    {
+      errno = EVMSERR;
+      vaxc$errno = status;
+      return -1;
+    }
+  return 0;
+}
+
+#if __CRTL_VER >= 70301000
+# define transpath_parm transpath
+#else
+static char transpath[MAX_DCL_SYMBOL_VALUE];
+#endif
+
+/* Helper callback routine for converting Unix paths to VMS */
+static int
+to_vms_action (char * vms_spec, int flag, char * transpath_parm)
+{
+  strncpy (transpath, vms_spec, MAX_DCL_SYMBOL_VALUE - 1);
+  transpath[MAX_DCL_SYMBOL_VALUE - 1] = 0;
+  return 0;
+}
+
+#ifdef __DECC
+# pragma message save
+  /* Undocumented extra parameter use triggers a ptrmismatch warning */
+# pragma message disable ptrmismatch
+#endif
+
+/* Create a foreign command only visible to children */
+int
+create_foreign_command (const char * command, const char * image)
+{
+  char vms_command[MAX_DCL_SYMBOL_VALUE + 1];
+  int status;
+
+  vms_command[0] = '$';
+  vms_command[1] = 0;
+  if (image[0] == '/')
+    {
+#if __CRTL_VER >= 70301000
+      /* Current decc$to_vms is reentrant */
+      decc$to_vms (image, to_vms_action, 0, 1, &vms_command[1]);
+#else
+      /* Older decc$to_vms is not reentrant */
+      decc$to_vms (image, to_vms_action, 0, 1);
+      strncpy (&vms_command[1], transpath, MAX_DCL_SYMBOL_VALUE - 1);
+      vms_command[MAX_DCL_SYMBOL_VALUE] = 0;
+#endif
+    }
+  else
+    {
+      strncpy (&vms_command[1], image, MAX_DCL_SYMBOL_VALUE - 1);
+      vms_command[MAX_DCL_SYMBOL_VALUE] = 0;
+    }
+  status = vms_export_dcl_symbol (command, vms_command);
+
+  return status;
+}
+#ifdef __DECC
+# pragma message restore
+#endif
+
+
+#ifdef DEBUG
+
+int
+main(int argc, char ** argv, char **env)
+{
+
+  char value[MAX_DCL_SYMBOL_VALUE +1];
+  int status = 0;
+  int putenv_status;
+  int vms_status;
+  struct dsc$descriptor_s name_desc;
+  struct dsc$descriptor_s value_desc;
+  const unsigned long symtbl = LIB$K_CLI_LOCAL_SYM;
+  unsigned short value_len;
+  unsigned long old_symtbl;
+  int result;
+  const char * vms_command = "vms_export_symbol";
+  const char * vms_image = "test_image.exe";
+  const char * vms_symbol1 = "test_symbol1";
+  const char * value1 = "test_value1";
+  const char * vms_symbol2 = "test_symbol2";
+  const char * putenv_string = "test_symbol2=value2";
+  const char * value2 = "value2";
+
+  /* Test creating a foreign command */
+  vms_status = create_foreign_command (vms_command, vms_image);
+  if (!$VMS_STATUS_SUCCESS (vms_status))
+    {
+      printf("Create foreign command failed: %d\n", vms_status);
+      status = 1;
+    }
+
+  name_desc.dsc$a_pointer = (char *)vms_command;
+  name_desc.dsc$w_length = strlen (vms_command);
+  name_desc.dsc$b_dtype = DSC$K_DTYPE_T;
+  name_desc.dsc$b_class = DSC$K_CLASS_S;
+
+  value_desc.dsc$a_pointer = value;
+  value_desc.dsc$w_length = MAX_DCL_SYMBOL_VALUE;
+  value_desc.dsc$b_dtype = DSC$K_DTYPE_T;
+  value_desc.dsc$b_class = DSC$K_CLASS_S;
+
+  vms_status = LIB$GET_SYMBOL (&name_desc, &value_desc,
+                               &value_len, &old_symtbl);
+  if (!$VMS_STATUS_SUCCESS (vms_status))
+    {
+      printf ("lib$get_symbol for command failed: %d\n", vms_status);
+      status = 1;
+    }
+
+  value[value_len] = 0;
+  result = strncasecmp (&value[1], vms_image, value_len - 1);
+  if (result != 0)
+    {
+      printf ("create_foreign_command failed!  expected '%s', got '%s'\n",
+              vms_image, &value[1]);
+      status = 1;
+    }
+
+  /* Test exporting a symbol */
+  vms_status = vms_export_dcl_symbol (vms_symbol1, value1);
+  if (!$VMS_STATUS_SUCCESS (vms_status))
+    {
+      printf ("vms_export_dcl_symbol for command failed: %d\n", vms_status);
+      status = 1;
+    }
+
+  name_desc.dsc$a_pointer = (char *)vms_symbol1;
+  name_desc.dsc$w_length = strlen (vms_symbol1);
+  vms_status = LIB$GET_SYMBOL(&name_desc, &value_desc,
+                              &value_len, &old_symtbl);
+  if (!$VMS_STATUS_SUCCESS(vms_status))
+    {
+      printf ("lib$get_symbol for command failed: %d\n", vms_status);
+      status = 1;
+    }
+
+  value[value_len] = 0;
+  result = strncmp (value, value1, value_len);
+  if (result != 0)
+    {
+      printf ("vms_export_dcl_symbol failed!  expected '%s', got '%s'\n",
+              value1, value);
+      status = 1;
+    }
+
+  /* Test putenv for DCL symbols */
+  putenv_status = vms_putenv_symbol (putenv_string);
+  if (putenv_status != 0)
+    {
+      perror ("vms_putenv_symbol");
+      status = 1;
+    }
+
+  name_desc.dsc$a_pointer = (char *)vms_symbol2;
+  name_desc.dsc$w_length = strlen(vms_symbol2);
+  vms_status = LIB$GET_SYMBOL (&name_desc, &value_desc,
+                               &value_len, &old_symtbl);
+  if (!$VMS_STATUS_SUCCESS (vms_status))
+    {
+      printf ("lib$get_symbol for command failed: %d\n", vms_status);
+      status = 1;
+    }
+
+  value[value_len] = 0;
+  result = strncmp (value, value2, value_len);
+  if (result != 0)
+  {
+    printf ("vms_putenv_symbol failed!  expected '%s', got '%s'\n",
+            value2, value);
+    status = 1;
+  }
+
+  vms_restore_symbol (putenv_string);
+  vms_status = LIB$GET_SYMBOL (&name_desc, &value_desc,
+                               &value_len, &old_symtbl);
+  if ($VMS_STATUS_SUCCESS (vms_status))
+    {
+      printf ("lib$get_symbol for command succeeded, should have failed\n");
+      status = 1;
+    }
+
+  exit (status);
+}
+
+#endif
diff --git a/src/kmk/vms_export_symbol_test.com b/src/kmk/vms_export_symbol_test.com
new file mode 100644
index 0000000..4345f44
--- /dev/null
+++ b/src/kmk/vms_export_symbol_test.com
@@ -0,0 +1,37 @@
+$! VMS_EXPORT_SYMBOL_TEST.COM
+$!
+$! Verify the VMS_EXPORT_SYMBOL.C module
+$!
+$! 22-May-2014   J. Malmberg
+$!
+$!=========================================================================
+$!
+$ cc/names=(as_is)/define=(DEBUG=1,_POSIX_EXIT=1) vms_export_symbol.c
+$!
+$ link vms_export_symbol
+$!
+$ delete vms_export_symbol.obj;*
+$!
+$! Need a foreign command to test.
+$ vms_export_symbol := $sys$disk:[]vms_export_symbol.exe
+$ save_export_symbol = vms_export_symbol
+$!
+$ vms_export_symbol
+$ if $severity .ne. 1
+$ then
+$    write sys$output "Test program failed!";
+$ endif
+$!
+$ if vms_export_symbol .nes. save_export_symbol
+$ then
+$   write sys$output "Test failed to restore foreign command!"
+$ endif
+$ if f$type(test_export_symbol) .nes. ""
+$ then
+$   write sys$output "Test failed to clear exported symbol!"
+$ endif
+$ if f$type(test_putenv_symbol) .nes. ""
+$ then
+$   write sys$output "Test failed to clear putenv exported symbol!"
+$ endif
+$!
diff --git a/src/kmk/vms_progname.c b/src/kmk/vms_progname.c
new file mode 100644
index 0000000..0665a54
--- /dev/null
+++ b/src/kmk/vms_progname.c
@@ -0,0 +1,463 @@
+/* File: vms_progname.c
+ *
+ * This module provides a fixup of the program name.
+ *
+ * This module is designed to be a plug in replacement for the
+ * progname module used by many GNU utilities with a few enhancements
+ * needed for GNU Make.
+ *
+ * It does not support the HAVE_DECL_PROGRAM_INVOCATION_* macros at this
+ * time.
+ *
+ * Make sure that the program_name string is set as close as possible to
+ *    what the original command was given.
+ *
+ * When run from DCL, The argv[0] element is initialized with an absolute
+ * path name.  The decc$ feature logical names can control the format
+ * of this pathname.  In some cases it causes the UNIX format name to be
+ * formatted incorrectly.
+ *
+ * This DCL provided name is usually incompatible with what is expected to
+ * be provided by Unix programs and needs to be replaced.
+ *
+ * When run from an exec() call, the argv[0] element is initialized by the
+ * program.  This name is compatible with what is expected to be provided
+ * by Unix programs and should be passed through unchanged.
+ *
+ * The DCL provided name can be detected because it always contains the
+ * device name.
+ *
+ * DCL examples:
+ *    devname:[dir]program.exe;1         Normal VMS - remove path and .EXE;n
+ *    devname:[dir]facility$program.exe;1   Facility also needs removal.
+ *    /devname/dir/program.exe
+ *    /DISK$VOLUME/dir/program.exe.1     Bug version should not be there.
+ *    /DISK$VOLUME/dir/program.          Bug Period should not be there.
+ *
+ */
+
+/* Copyright (C) 2014-2016 Free Software Foundation, Inc.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Per copyright assignment agreement with the Free Software Foundation
+   this software may be available under under other license agreements
+   and copyrights. */
+
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+#include <descrip.h>
+#include <dvidef.h>
+#include <efndef.h>
+#include <fscndef.h>
+#include <stsdef.h>
+
+#ifdef USE_PROGNAME_H
+# include "progname.h"
+#endif
+
+#pragma member_alignment save
+#pragma nomember_alignment longword
+struct item_list_3
+{
+  unsigned short len;
+  unsigned short code;
+  void * bufadr;
+  unsigned short * retlen;
+};
+
+struct filescan_itmlst_2
+{
+  unsigned short length;
+  unsigned short itmcode;
+  char * component;
+};
+
+#pragma member_alignment
+
+int
+SYS$GETDVIW (unsigned long efn,
+             unsigned short chan,
+             const struct dsc$descriptor_s * devnam,
+             const struct item_list_3 * itmlst,
+             void * iosb,
+             void (* astadr)(unsigned long),
+             unsigned long astprm,
+             void * nullarg);
+
+int
+SYS$FILESCAN (const struct dsc$descriptor_s * srcstr,
+              struct filescan_itmlst_2 * valuelist,
+              unsigned long * fldflags,
+              struct dsc$descriptor_s *auxout,
+              unsigned short * retlen);
+
+/* String containing name the program is called with.
+   To be initialized by main().  */
+
+const char *program_name = NULL;
+
+static int internal_need_vms_symbol = 0;
+
+static char vms_new_nam[256];
+
+int
+need_vms_symbol (void)
+{
+  return internal_need_vms_symbol;
+}
+
+
+void
+set_program_name (const char *argv0)
+{
+  int status;
+  int result;
+
+#ifdef DEBUG
+  printf ("original argv0 = %s\n", argv0);
+#endif
+
+  /* Posix requires non-NULL argv[0] */
+  if (argv0 == NULL)
+    {
+      fputs ("A NULL argv[0] was passed through an exec system call.\n",
+             stderr);
+      abort ();
+    }
+
+  program_name = argv0;
+  result = 0;
+  internal_need_vms_symbol = 0;
+
+  /* If the path name starts with a /, then it is an absolute path         */
+  /* that may have been generated by the CRTL instead of the command name  */
+  /* If it is the device name between the slashes, then this was likely    */
+  /* from the run command and needs to be fixed up.                        */
+  /* If the DECC$POSIX_COMPLIANT_PATHNAMES is set to 2, then it is the     */
+  /* DISK$VOLUME that will be present, and it will still need to be fixed. */
+  if (argv0[0] == '/')
+    {
+      char * nextslash;
+      int length;
+      struct item_list_3 itemlist[3];
+      unsigned short dvi_iosb[4];
+      char alldevnam[64];
+      unsigned short alldevnam_len;
+      struct dsc$descriptor_s devname_dsc;
+      char diskvolnam[256];
+      unsigned short diskvolnam_len;
+
+      internal_need_vms_symbol = 1;
+
+       /* Get some information about the disk */
+      /*--------------------------------------*/
+      itemlist[0].len = (sizeof alldevnam) - 1;
+      itemlist[0].code = DVI$_ALLDEVNAM;
+      itemlist[0].bufadr = alldevnam;
+      itemlist[0].retlen = &alldevnam_len;
+      itemlist[1].len = (sizeof diskvolnam) - 1 - 5;
+      itemlist[1].code = DVI$_VOLNAM;
+      itemlist[1].bufadr = &diskvolnam[5];
+      itemlist[1].retlen = &diskvolnam_len;
+      itemlist[2].len = 0;
+      itemlist[2].code = 0;
+
+      /* Add the prefix for the volume name. */
+      /* SYS$GETDVI will append the volume name to this */
+      strcpy (diskvolnam, "DISK$");
+
+      nextslash = strchr (&argv0[1], '/');
+      if (nextslash != NULL)
+        {
+          length = nextslash - argv0 - 1;
+
+          /* Cast needed for HP C compiler diagnostic */
+          devname_dsc.dsc$a_pointer = (char *)&argv0[1];
+          devname_dsc.dsc$w_length = length;
+          devname_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
+          devname_dsc.dsc$b_class = DSC$K_CLASS_S;
+
+          status = SYS$GETDVIW (EFN$C_ENF, 0, &devname_dsc, itemlist,
+                                dvi_iosb, NULL, 0, 0);
+          if (!$VMS_STATUS_SUCCESS (status))
+            {
+              /* If the sys$getdviw fails, then this path was passed by */
+              /* An exec() program and not from DCL, so do nothing */
+              /* An example is "/tmp/program" where tmp: does not exist */
+#ifdef DEBUG
+              printf ("sys$getdviw failed with status %d\n", status);
+#endif
+              result = 0;
+             }
+           else if (!$VMS_STATUS_SUCCESS (dvi_iosb[0]))
+             {
+#ifdef DEBUG
+                printf ("sys$getdviw failed with iosb %d\n", dvi_iosb[0]);
+#endif
+                result = 0;
+              }
+            else
+              {
+                char * devnam;
+                int devnam_len;
+                char argv_dev[64];
+
+                /* Null terminate the returned alldevnam */
+                alldevnam[alldevnam_len] = 0;
+                devnam = alldevnam;
+                devnam_len = alldevnam_len;
+
+                /* Need to skip past any leading underscore */
+                if (devnam[0] == '_')
+                  {
+                    devnam++;
+                    devnam_len--;
+                  }
+
+                /* And remove the trailing colon */
+                if (devnam[devnam_len - 1] == ':')
+                  {
+                    devnam_len--;
+                    devnam[devnam_len] = 0;
+                  }
+
+                /* Null terminate the returned volnam */
+                diskvolnam_len += 5;
+                diskvolnam[diskvolnam_len] = 0;
+
+                /* Check first for normal CRTL behavior */
+                if (devnam_len == length)
+                  {
+                    strncpy (vms_new_nam, &argv0[1], length);
+                    vms_new_nam[length] = 0;
+                    result = (strcasecmp (devnam, vms_new_nam) == 0);
+                  }
+
+                /* If we have not got a match, check for POSIX Compliant */
+                /* behavior.  To be more accurate, we could also check */
+                /* to see if that feature is active. */
+                if ((result == 0) && (diskvolnam_len == length))
+                  {
+                    strncpy (vms_new_nam, &argv0[1], length);
+                    vms_new_nam[length] = 0;
+                    result = (strcasecmp (diskvolnam, vms_new_nam) == 0);
+                  }
+              }
+        }
+      }
+    else
+      {
+        /* The path did not start with a slash, so it could be VMS format */
+        /* If it is vms format, it has a volume/device in it as it must   */
+        /* be an absolute path */
+        struct dsc$descriptor_s path_desc;
+        int status;
+        unsigned long field_flags;
+        struct filescan_itmlst_2 item_list[5];
+        char * volume;
+        char * name;
+        int name_len;
+        char * ext;
+
+        path_desc.dsc$a_pointer = (char *)argv0; /* cast ok */
+        path_desc.dsc$w_length = strlen (argv0);
+        path_desc.dsc$b_dtype = DSC$K_DTYPE_T;
+        path_desc.dsc$b_class = DSC$K_CLASS_S;
+
+        /* Don't actually need to initialize anything buf itmcode */
+        /* I just do not like uninitialized input values */
+
+        /* Sanity check, this must be the same length as input */
+        item_list[0].itmcode = FSCN$_FILESPEC;
+        item_list[0].length = 0;
+        item_list[0].component = NULL;
+
+        /* If the device is present, then it if a VMS spec */
+        item_list[1].itmcode = FSCN$_DEVICE;
+        item_list[1].length = 0;
+        item_list[1].component = NULL;
+
+        /* we need the program name and type */
+        item_list[2].itmcode = FSCN$_NAME;
+        item_list[2].length = 0;
+        item_list[2].component = NULL;
+
+        item_list[3].itmcode = FSCN$_TYPE;
+        item_list[3].length = 0;
+        item_list[3].component = NULL;
+
+        /* End the list */
+        item_list[4].itmcode = 0;
+        item_list[4].length = 0;
+        item_list[4].component = NULL;
+
+        status = SYS$FILESCAN ((const struct dsc$descriptor_s *)&path_desc,
+                               item_list, &field_flags, NULL, NULL);
+
+
+        if ($VMS_STATUS_SUCCESS (status) &&
+           (item_list[0].length == path_desc.dsc$w_length) &&
+           (item_list[1].length != 0))
+          {
+
+            char * dollar;
+            int keep_ext;
+            int i;
+
+            /* We need the filescan to be successful, */
+            /* same length as input, and a volume to be present */
+            internal_need_vms_symbol = 1;
+
+            /* We will assume that we only get to this path on a version */
+            /* of VMS that does not support the EFS character set */
+
+            /* There may be a xxx$ prefix on the image name.  Linux */
+            /* programs do not handle that well, so strip the prefix */
+            name = item_list[2].component;
+            name_len = item_list[2].length;
+            dollar = strrchr (name, '$');
+            if (dollar != NULL)
+              {
+                dollar++;
+                name_len = name_len - (dollar - name);
+                name = dollar;
+              }
+
+            strncpy (vms_new_nam, name, name_len);
+            vms_new_nam[name_len] = 0;
+
+            /* Commit to using the new name */
+            program_name = vms_new_nam;
+
+            /* We only keep the extension if it is not ".exe" */
+            keep_ext = 0;
+            ext = item_list[3].component;
+
+            if (item_list[3].length != 1)
+              {
+                keep_ext = 1;
+                if (item_list[3].length == 4)
+                  {
+                    if ((ext[1] == 'e' || ext[1] == 'E') &&
+                        (ext[2] == 'x' || ext[2] == 'X') &&
+                        (ext[3] == 'e' || ext[3] == 'E'))
+                      keep_ext = 0;
+                  }
+              }
+
+            if (keep_ext == 1)
+              strncpy (&vms_new_nam[name_len], ext, item_list[3].length);
+          }
+      }
+
+    if (result)
+      {
+        char * lastslash;
+        char * dollar;
+        char * dotexe;
+        char * lastdot;
+        char * extension;
+
+        /* This means it is probably the name from a DCL command */
+        /* Find the last slash which separates the file from the */
+        /* path. */
+        lastslash = strrchr (argv0, '/');
+
+        if (lastslash != NULL) {
+            int i;
+
+            lastslash++;
+
+            /* There may be a xxx$ prefix on the image name.  Linux */
+            /* programs do not handle that well, so strip the prefix */
+            dollar = strrchr (lastslash, '$');
+
+            if (dollar != NULL) {
+                dollar++;
+                lastslash = dollar;
+            }
+
+            strcpy (vms_new_nam, lastslash);
+
+            /* In UNIX mode + EFS character set, there should not be a */
+            /* version present, as it is not possible when parsing to  */
+            /* tell if it is a version or part of the UNIX filename as */
+            /* UNIX programs use numeric extensions for many reasons.  */
+
+            lastdot = strrchr (vms_new_nam, '.');
+            if (lastdot != NULL) {
+                int i;
+
+                i = 1;
+                while (isdigit (lastdot[i])) {
+                    i++;
+                }
+                if (lastdot[i] == 0) {
+                    *lastdot = 0;
+                }
+            }
+
+            /* Find the .exe on the name (case insenstive) and toss it */
+            dotexe = strrchr (vms_new_nam, '.');
+            if (dotexe != NULL) {
+                if ((dotexe[1] == 'e' || dotexe[1] == 'E') &&
+                    (dotexe[2] == 'x' || dotexe[2] == 'X') &&
+                    (dotexe[3] == 'e' || dotexe[3] == 'E') &&
+                    (dotexe[4] == 0)) {
+
+                    *dotexe = 0;
+                } else {
+                     /* Also need to handle a null extension because of a */
+                     /* CRTL bug. */
+                     if (dotexe[1] == 0) {
+                         *dotexe = 0;
+                    }
+                }
+            }
+
+            /* Commit to new name */
+            program_name = vms_new_nam;
+
+        } else {
+            /* There is no way that the code should ever get here */
+            /* As we already verified that the '/' was present */
+            fprintf (stderr, "Sanity failure somewhere we lost a '/'\n");
+        }
+    }
+}
+
+#ifdef DEBUG
+
+int
+main (int argc, char ** argv, char **env)
+{
+
+  char command[1024];
+
+  set_program_name (argv[0]);
+
+  printf ("modified argv[0] = %s\n", program_name);
+
+  return 0;
+}
+#endif
diff --git a/src/kmk/vmsdir.h b/src/kmk/vmsdir.h
new file mode 100644
index 0000000..814b89d
--- /dev/null
+++ b/src/kmk/vmsdir.h
@@ -0,0 +1,76 @@
+/* dirent.h for vms
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef VMSDIR_H
+#define VMSDIR_H
+
+#include <rms.h>
+
+#define	MAXNAMLEN	255
+
+#ifndef __DECC
+#if !defined (__GNUC__) && !defined (__ALPHA)
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+#endif
+
+struct direct
+{
+  off_t d_off;
+  u_long d_fileno;
+  u_short d_reclen;
+  u_short d_namlen;
+  char d_name[MAXNAMLEN + 1];
+};
+
+#undef DIRSIZ
+#define DIRSIZ(dp)		\
+  (((sizeof (struct direct)	\
+     - (MAXNAMLEN+1)		\
+     + ((dp)->d_namlen+1))	\
+    + 3) & ~3)
+
+#define d_ino	d_fileno		/* compatibility */
+
+
+/*
+ * Definitions for library routines operating on directories.
+ */
+
+typedef struct DIR
+{
+  struct direct dir;
+  char d_result[MAXNAMLEN + 1];
+#if defined (__ALPHA) || defined (__DECC)
+  struct FAB fab;
+#else
+  struct fabdef fab;
+#endif
+} DIR;
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#define rewinddir(dirp)	seekdir((dirp), (long)0)
+
+DIR *opendir ();
+struct direct *readdir (DIR *dfd);
+int closedir (DIR *dfd);
+const char *vmsify (const char *name, int type);
+
+#endif /* VMSDIR_H */
diff --git a/src/kmk/vmsfunctions.c b/src/kmk/vmsfunctions.c
new file mode 100644
index 0000000..e422d48
--- /dev/null
+++ b/src/kmk/vmsfunctions.c
@@ -0,0 +1,226 @@
+/* VMS functions
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "debug.h"
+#include "job.h"
+
+#include <ctype.h>
+#include <string.h>
+
+#ifdef __DECC
+#include <starlet.h>
+#endif
+
+#include <rms.h>
+#include "vmsdir.h"
+
+#ifdef HAVE_VMSDIR_H
+
+DIR *
+opendir (char *dspec)
+{
+  struct DIR *dir  = xcalloc (sizeof (struct DIR));
+  struct NAM *dnam = xmalloc (sizeof (struct NAM));
+  struct FAB *dfab = &dir->fab;
+  char *searchspec = xmalloc (MAXNAMLEN + 1);
+
+  *dfab = cc$rms_fab;
+  *dnam = cc$rms_nam;
+  sprintf (searchspec, "%s*.*;", dspec);
+
+  dfab->fab$l_fna = searchspec;
+  dfab->fab$b_fns = strlen (searchspec);
+  dfab->fab$l_nam = dnam;
+
+  *dnam = cc$rms_nam;
+  dnam->nam$l_esa = searchspec;
+  dnam->nam$b_ess = MAXNAMLEN;
+
+  if (! (sys$parse (dfab) & 1))
+    {
+      free (dir);
+      free (dnam);
+      free (searchspec);
+      return (NULL);
+    }
+
+  return dir;
+}
+
+#define uppercasify(str) \
+  do \
+    { \
+      char *tmp; \
+      for (tmp = (str); *tmp != '\0'; tmp++) \
+        if (islower ((unsigned char)*tmp)) \
+          *tmp = toupper ((unsigned char)*tmp); \
+    } \
+  while (0)
+
+struct direct *
+readdir (DIR *dir)
+{
+  struct FAB *dfab = &dir->fab;
+  struct NAM *dnam = (struct NAM *)(dfab->fab$l_nam);
+  struct direct *dentry = &dir->dir;
+  int i;
+
+  memset (dentry, 0, sizeof *dentry);
+
+  dnam->nam$l_rsa = dir->d_result;
+  dnam->nam$b_rss = MAXNAMLEN;
+
+  DB (DB_VERBOSE, ("."));
+
+  if (!((i = sys$search (dfab)) & 1))
+    {
+      DB (DB_VERBOSE, (_("sys$search() failed with %d\n"), i));
+      return (NULL);
+    }
+
+  dentry->d_off = 0;
+  if (dnam->nam$w_fid == 0)
+    dentry->d_fileno = 1;
+  else
+    dentry->d_fileno = dnam->nam$w_fid[0] + (dnam->nam$w_fid[1] << 16);
+
+  dentry->d_reclen = sizeof (struct direct);
+  dentry->d_namlen = dnam->nam$b_name + dnam->nam$b_type;
+  strncpy (dentry->d_name, dnam->nam$l_name, dentry->d_namlen);
+  dentry->d_name[dentry->d_namlen] = '\0';
+
+#ifdef HAVE_CASE_INSENSITIVE_FS
+  uppercasify (dentry->d_name);
+#endif
+
+  return (dentry);
+}
+
+int
+closedir (DIR *dir)
+{
+  if (dir != NULL)
+    {
+      struct FAB *dfab = &dir->fab;
+      struct NAM *dnam = (struct NAM *)(dfab->fab$l_nam);
+      if (dnam != NULL)
+        free (dnam->nam$l_esa);
+      free (dnam);
+      free (dir);
+    }
+
+  return 0;
+}
+#endif /* compiled for OpenVMS prior to V7.x */
+
+/* Argv0 will be a full vms file specification, like
+   node$dka100:[utils.gnumake]make.exe;47
+   prefix it with "mcr " to make it a vms command, executable for DCL. */
+const char *
+vms_command(const char* argv0)
+{
+  size_t l = strlen(argv0) + 1;
+  char* s = xmalloc(l + 4);
+  memcpy(s, "mcr ", 4);
+  memcpy(s+4, argv0, l);
+  return s;
+}
+
+/* Argv0 aka argv[0] will be a full vms file specification, like
+   node$dka100:[utils.gnumake]make.exe;47, set up by the CRTL.
+   The vms progname should be ^^^^, the file name without
+   file type .exe and ;version.
+   Use sys$parse to get the name part of the file specification. That is
+   in the above example, pick up "make" and return a copy of that string.
+   If something goes wrong in sys$parse (unlikely, this is a VMS/CRTL supplied
+   file specification) or if there is an empty name part (not easy to produce,
+   but it is possible) just return "make".
+   Somes notes ...
+   NAM[L]$M_SYNCHK requests a syntax check, only.
+   NAM is for ODS2 names (shorter parts, output usually converted to UPPERCASE).
+   NAML is for ODS2/ODS5 names (longer parts, output unchanged).
+   NAM$M_NO_SHORT_UPCASE may not be available for older versions of VMS.
+   NAML is not available on older versions of VMS (NAML$C_BID not defined).
+   argv[0] on older versions of VMS (no extended parse style and no
+   CRTL feature DECC$ARGV_PARSE_STYLE) is always in lowercase. */
+const char *
+vms_progname(const char* argv0)
+{
+  int status;
+  static struct FAB fab;
+  char *progname;
+  const char *fallback = "make";
+
+#ifdef NAML$C_BID
+  static char esa[NAML$C_MAXRSS];
+  static struct NAML naml;
+#else
+  static char esa[NAM$C_MAXRSS];
+  static struct NAM nam;
+#endif
+
+  fab = cc$rms_fab;
+  fab.fab$l_fna = (char*)argv0;
+  fab.fab$b_fns = strlen(argv0);
+
+#ifdef NAML$C_BID
+  fab.fab$l_naml = &naml;
+  naml = cc$rms_naml;
+  naml.naml$l_long_expand = esa;
+  naml.naml$l_long_expand_alloc = NAML$C_MAXRSS;
+  naml.naml$b_nop = NAML$M_SYNCHK;
+  naml.naml$l_input_flags = NAML$M_NO_SHORT_OUTPUT;
+#else
+  fab.fab$l_nam = &nam;
+  nam = cc$rms_nam;
+  nam.nam$l_esa = esa;
+  nam.nam$b_ess = NAM$C_MAXRSS;
+# ifdef NAM$M_NO_SHORT_UPCASE
+  nam.nam$b_nop = NAM$M_SYNCHK | NAM$M_NO_SHORT_UPCASE;
+# else
+  nam.nam$b_nop = NAM$M_SYNCHK;
+# endif
+#endif
+
+  status = sys$parse(&fab);
+  if (!(status & 1))
+    return fallback;
+
+#ifdef NAML$C_BID
+  if (naml.naml$l_long_name_size == 0)
+    return fallback;
+  progname = xmalloc(naml.naml$l_long_name_size + 1);
+  memcpy(progname, naml.naml$l_long_name, naml.naml$l_long_name_size);
+  progname[naml.naml$l_long_name_size] = '\0';
+#else
+  if (nam.nam$b_name == 0)
+    return fallback;
+  progname = xmalloc(nam.nam$b_name + 1);
+# ifdef NAM$M_NO_SHORT_UPCASE
+  memcpy(progname, nam.nam$l_name, nam.nam$b_name);
+# else
+    {
+      int i;
+      for (i = 0; i < nam.nam$b_name; i++)
+        progname[i] = tolower(nam.nam$l_name[i]);
+    }
+# endif
+  progname[nam.nam$b_name] = '\0';
+#endif
+
+  return progname;
+}
diff --git a/src/kmk/vmsify.c b/src/kmk/vmsify.c
new file mode 100644
index 0000000..e504a09
--- /dev/null
+++ b/src/kmk/vmsify.c
@@ -0,0 +1,1005 @@
+/* vmsify.c -- Module for vms <-> unix file name conversion
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Written by Klaus Kämpf (kkaempf@progis.de)
+   of proGIS Software, Aachen, Germany */
+
+
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "makeint.h"
+
+#if VMS
+#include <unixlib.h>
+#include <stdlib.h>
+#include <jpidef.h>
+#include <descrip.h>
+#include <uaidef.h>
+#include <ssdef.h>
+#include <starlet.h>
+#include <lib$routines.h>
+/* Initialize a string descriptor (struct dsc$descriptor_s) for an
+   arbitrary string.   ADDR is a pointer to the first character
+   of the string, and LEN is the length of the string. */
+
+#define INIT_DSC_S(dsc, addr, len) do { \
+  (dsc).dsc$b_dtype = DSC$K_DTYPE_T;    \
+  (dsc).dsc$b_class = DSC$K_CLASS_S;    \
+  (dsc).dsc$w_length = (len);           \
+  (dsc).dsc$a_pointer = (addr);         \
+} while (0)
+
+/* Initialize a string descriptor (struct dsc$descriptor_s) for a
+   NUL-terminated string.  S is a pointer to the string; the length
+   is determined by calling strlen(). */
+
+#define INIT_DSC_CSTRING(dsc, s) INIT_DSC_S(dsc, s, strlen(s))
+#endif
+
+/*
+  copy 'from' to 'to' up to but not including 'upto'
+  return 0 if eos on from
+  return 1 if upto found
+
+  return 'to' at last char + 1
+  return 'from' at match + 1 or eos if no match
+
+  if as_dir == 1, change all '.' to '_'
+  else change all '.' but the last to '_'
+*/
+
+static int
+copyto (char **to, const char **from, char upto, int as_dir)
+{
+  const char *s;
+
+  s = strrchr (*from, '.');
+
+  while (**from)
+    {
+      if (**from == upto)
+	{
+	  do
+	    {
+	      (*from)++;
+	    }
+	  while (**from == upto);
+	  return 1;
+	}
+      if (**from == '.')
+	{
+	  if ((as_dir == 1)
+	      || (*from != s))
+	    **to = '_';
+	  else
+	    **to = '.';
+	}
+      else
+	{
+#ifdef HAVE_CASE_INSENSITIVE_FS
+	  if (isupper ((unsigned char)**from))
+	    **to = tolower ((unsigned char)**from);
+	  else
+#endif
+	    **to = **from;
+	}
+      (*to)++;
+      (*from)++;
+    }
+
+  return 0;
+}
+
+
+/*
+  get translation of logical name
+
+*/
+
+static char *
+trnlog (const char *name)
+{
+  int stat;
+  static char reslt[1024];
+  $DESCRIPTOR (reslt_dsc, reslt);
+  short resltlen;
+  struct dsc$descriptor_s name_dsc;
+  char *s;
+
+  /*
+   * the string isn't changed, but there is no string descriptor with
+   * "const char *dsc$a_pointer"
+   */
+  INIT_DSC_CSTRING (name_dsc, (char *)name);
+
+  stat = lib$sys_trnlog (&name_dsc, &resltlen, &reslt_dsc);
+
+  if ((stat&1) == 0)
+    {
+      return "";
+    }
+  if (stat == SS$_NOTRAN)
+    {
+      return "";
+    }
+  reslt[resltlen] = '\0';
+
+  s = xmalloc (resltlen+1);
+  strcpy (s, reslt);
+  return s;
+}
+
+static char *
+showall (char *s)
+{
+  static char t[512];
+  char *pt;
+
+  pt = t;
+  if (strchr (s, '\\') == 0)
+    return s;
+  while (*s)
+    {
+      if (*s == '\\')
+	{
+	  *pt++ = *s;
+	}
+      *pt++ = *s++;
+    }
+  return pt;
+}
+
+
+enum namestate { N_START, N_DEVICE, N_OPEN, N_DOT, N_CLOSED, N_DONE };
+
+/*
+  convert unix style name to vms style
+  type = 0 -> name is a full name (directory and filename part)
+  type = 1 -> name is a directory
+  type = 2 -> name is a filename without directory
+
+  The following conversions are applied
+			(0)		(1)			(2)
+	input		full name	dir name		file name
+
+1	./		<cwd>		[]			<current directory>.dir
+2	../		<home of cwd>	<home of cwd>		<home of cwd>.dir
+
+3	//		<dev of cwd>:	<dev of cwd>:[000000]	<dev of cwd>:000000.dir
+4	//a		a:		a:			a:
+5	//a/		a:		a:			a:000000.dir
+
+9	/		[000000]	[000000]		000000.dir
+10	/a		[000000]a	[a]			[000000]a
+11	/a/		[a]		[a]			[000000]a.dir
+12	/a/b		[a]b		[a.b]			[a]b
+13	/a/b/		[a.b]		[a.b]			[a]b.dir
+14	/a/b/c		[a.b]c		[a.b.c]			[a.b]c
+15	/a/b/c/		[a.b.c]		[a.b.c]			[a.b]c.dir
+
+16	a		a		[.a]			a
+17	a/		[.a]		[.a]			a.dir
+18	a/b		[.a]b		[.a.b]			[.a]b
+19	a/b/		[.a.b]		[.a.b]			[.a]b.dir
+20	a/b/c		[.a.b]c		[.a.b.c]		[.a.b]c
+21	a/b/c/		[.a.b.c]	[.a.b.c]		[.a.b]c.dir
+
+22	a.b.c		a_b.c		[.a_b_c]		a_b_c.dir
+
+23	[x][y]z		[x.y]z		[x.y]z			[x.y]z
+24	[x][.y]z	[x.y]z		[x.y]z			[x.y]z
+
+25  filenames with '$'  are left unchanged if they contain no '/'
+25  filenames with ':' are left unchanged
+26  filenames with a single pair of '[' ']' are left unchanged
+
+  The input string is not written to.  The result is also const because
+  it's a static buffer; we don't want to change it.
+*/
+
+const char *
+vmsify (const char *name, int type)
+{
+/* max 255 device
+   max 39 directory
+   max 39 filename
+   max 39 filetype
+   max 5 version
+*/
+/* todo: VMSMAXPATHLEN is defined for ODS2 names: it needs to be adjusted. */
+#define VMSMAXPATHLEN 512
+
+  enum namestate nstate;
+  static char vmsname[VMSMAXPATHLEN+1];
+  const char *fptr;
+  const char *t;
+  char *vptr;
+  int as_dir;
+  int count;
+  const char *s;
+  const char *s1;
+  const char *s2;
+
+  if (name == 0)
+    return 0;
+  fptr = name;
+  vptr = vmsname;
+  nstate = N_START;
+
+  /* case 25a */
+  t = strpbrk (name, "$:");
+
+  if (t != 0)
+    {
+//      const char *s1;
+//      const char *s2;
+
+      if (type == 1)
+        {
+          s1 = strchr (t+1, '[');
+          s2 = strchr (t+1, ']');
+        }
+
+      if (*t == '$')
+        {
+          if (strchr (name, '/') == 0)
+            {
+              strcpy (vmsname, name);
+              if ((type == 1) && (s1 != 0) && (s2 == 0))
+                strcat (vmsname, "]");
+              return vmsname;
+            }
+        }
+      else
+        {
+          strcpy (vmsname, name);
+          if ((type == 1) && (s1 != 0) && (s2 == 0))
+            strcat (vmsname, "]");
+          return vmsname;
+        }
+    }
+
+  /* case 26 */
+  t = strchr (name, '[');
+
+  if (t != 0)
+    {
+//      const char *s;
+//      const char *s1 = strchr (t+1, '[');
+      s1 = strchr (t+1, '[');
+      if (s1 == 0)
+	{
+          strcpy (vmsname, name);
+	  if ((type == 1) && (strchr (t+1, ']') == 0))
+            strcat (vmsname, "]");
+          return vmsname;
+	}
+      s1--;
+      if (*s1 != ']')
+	{
+          strcpy (vmsname, name);
+	  return vmsname;		/* not ][, keep unchanged */
+	}
+
+      /* we have ][ */
+
+      s = name;
+
+      /* s  -> starting char
+	 s1 -> ending ']'  */
+      do
+	{
+	  strncpy (vptr, s, s1-s);	/* copy up to but not including ']' */
+	  vptr += s1-s;
+	  if (*s1 == 0)
+	    break;
+	  s = s1 + 1;			/* s -> char behind ']' */
+	  if (*s != '[')		/* was '][' ? */
+	    break;			/* no, last ] found, exit */
+	  s++;
+	  if (*s != '.')
+	    *vptr++ = '.';
+	  s1 = strchr (s, ']');
+	  if (s1 == 0)			/* no closing ] */
+	    s1 = s + strlen (s);
+	}
+      while (1);
+
+      *vptr++ = ']';
+
+      fptr = s;
+
+    }
+  else		/* no [ in name */
+    {
+      int state = 0;
+      int rooted = 1;	/* flag if logical is rooted, else insert [000000] */
+
+      do
+	{
+      switch (state)
+	{
+	  case 0:				/* start of loop */
+	    if (*fptr == '/')
+	      {
+		fptr++;
+		state = 1;
+	      }
+	    else if (*fptr == '.')
+	      {
+		fptr++;
+		state = 10;
+	      }
+	    else
+	      state = 2;
+	    break;
+
+	  case 1:				/* '/' at start */
+	    if (*fptr == '/')
+	      {
+		fptr++;
+		state = 3;
+	      }
+	    else
+	      state = 4;
+	    break;
+
+	  case 2:				/* no '/' at start */
+            {
+            const char *s = strchr (fptr, '/');
+	    if (s == 0)			/* no '/' (16) */
+	      {
+		if (type == 1)
+		  {
+		    strcpy (vptr, "[.");
+		    vptr += 2;
+		  }
+		copyto (&vptr, &fptr, 0, (type==1));
+		if (type == 1)
+		  *vptr++ = ']';
+		state = -1;
+	      }
+	    else			/* found '/' (17..21) */
+	      {
+		if ((type == 2)
+		    && (*(s+1) == 0))	/* 17(2) */
+		  {
+		    copyto (&vptr, &fptr, '/', 1);
+		    state = 7;
+		  }
+		else
+		  {
+		    strcpy (vptr, "[.");
+		    vptr += 2;
+		    copyto (&vptr, &fptr, '/', 1);
+		    nstate = N_OPEN;
+		    state = 9;
+		  }
+	      }
+	    break;
+            }
+
+	  case 3:				/* '//' at start */
+            {
+//            const char *s;
+//            const char *s1;
+            char *vp;
+	    while (*fptr == '/')	/* collapse all '/' */
+	      fptr++;
+	    if (*fptr == 0)		/* just // */
+	      {
+		char cwdbuf[VMSMAXPATHLEN+1];
+
+		s1 = getcwd(cwdbuf, VMSMAXPATHLEN);
+		if (s1 == 0)
+		  {
+                    vmsname[0] = '\0';
+		    return vmsname;	/* FIXME, err getcwd */
+		  }
+		s = strchr (s1, ':');
+		if (s == 0)
+		  {
+                    vmsname[0] = '\0';
+		    return vmsname;	/* FIXME, err no device */
+		  }
+		strncpy (vptr, s1, s-s1+1);
+		vptr += s-s1+1;
+		state = -1;
+		break;
+	      }
+
+	    s = vptr;
+
+	    if (copyto (&vptr, &fptr, '/', 1) == 0)	/* copy device part */
+	      {
+		*vptr++ = ':';
+		state = -1;
+		break;
+	      }
+	    *vptr = ':';
+	    nstate = N_DEVICE;
+	    if (*fptr == 0)	/* just '//a/' */
+	      {
+		strcpy (vptr+1, "[000000]");
+		vptr += 9;
+		state = -1;
+		break;
+	      }
+	    *vptr = 0;
+				/* check logical for [000000] insertion */
+	    vp = trnlog (s);
+	    if (*vp != '\0')
+	      {			/* found translation */
+		for (;;)	/* loop over all nested logicals */
+		  {
+		    char *vp2 = vp + strlen (vp) - 1;
+		    if (*vp2 == ':')	/* translation ends in ':' */
+		      {
+			vp2 = trnlog (vp);
+			free (vp);
+			if (*vp2 == 0)
+			  {
+			    rooted = 0;
+			    break;
+			  }
+			vp = vp2;
+			continue;	/* next iteration */
+		      }
+		    if (*vp2 == ']')	/* translation ends in ']' */
+		      {
+			if (*(vp2-1) == '.')	/* ends in '.]' */
+			  {
+			    if (strncmp (fptr, "000000", 6) != 0)
+			      rooted = 0;
+			  }
+			else
+			  {
+			    strcpy (vmsname, s1);
+			    vp = strchr (vmsname, ']');
+			    *vp = '.';
+			    nstate = N_DOT;
+			    vptr = vp;
+			  }
+		      }
+		    break;
+		  }
+		free (vp);
+	      }
+	    else
+	      rooted = 0;
+
+	    if (*vptr == 0)
+	      {
+		nstate = N_DEVICE;
+	        *vptr++ = ':';
+	      }
+	    else
+	      vptr++;
+
+	    if (rooted == 0)
+	      {
+		nstate = N_DOT;
+	        strcpy (vptr, "[000000.");
+		vptr += 8;
+		vp = vptr-1;
+	      }
+	    else
+	      vp = 0;
+
+            /* vp-> '.' after 000000 or NULL */
+
+	    s = strchr (fptr, '/');
+	    if (s == 0)
+	      {				/* no next '/' */
+		if (*(vptr-1) == '.')
+		  *(vptr-1) = ']';
+		else if (rooted == 0)
+		  *vptr++ = ']';
+		copyto (&vptr, &fptr, 0, (type == 1));
+		state = -1;
+		break;
+	      }
+	    else
+	      {
+		while (*(s+1) == '/')	/* skip multiple '/' */
+		  s++;
+	      }
+
+	    if ((rooted != 0)
+	        && (*(vptr-1) != '.'))
+	      {
+		*vptr++ = '[';
+		nstate = N_DOT;
+	      }
+	    else
+	      if ((nstate == N_DOT)
+		 && (vp != 0)
+		 && (*(s+1) == 0))
+		{
+		  if (type == 2)
+		    {
+		      *vp = ']';
+		      nstate = N_CLOSED;
+		    }
+		}
+	    state = 9;
+	    break;
+            }
+	  case 4:				/* single '/' at start (9..15) */
+	    if (*fptr == 0)
+	      state = 5;
+	    else
+	      state = 6;
+	    break;
+
+	  case 5:				/* just '/' at start (9) */
+	    if (type != 2)
+	      {
+	        *vptr++ = '[';
+		nstate = N_OPEN;
+	      }
+	    strcpy (vptr, "000000");
+	    vptr += 6;
+	    if (type == 2)
+	      state = 7;
+	    else
+	      state = 8;
+	    break;
+
+	  case 6:		/* chars following '/' at start 10..15 */
+            {
+            const char *s;
+	    *vptr++ = '[';
+	    nstate = N_OPEN;
+	    s = strchr (fptr, '/');
+	    if (s == 0)			/* 10 */
+	      {
+		if (type != 1)
+		  {
+		    strcpy (vptr, "000000]");
+		    vptr += 7;
+		  }
+		copyto (&vptr, &fptr, 0, (type == 1));
+		if (type == 1)
+		  {
+		    *vptr++ = ']';
+		  }
+		state = -1;
+	      }
+	    else			/* 11..15 */
+	      {
+		if ( (type == 2)
+		   && (*(s+1) == 0))	/* 11(2) */
+		  {
+		    strcpy (vptr, "000000]");
+		    nstate = N_CLOSED;
+		    vptr += 7;
+		  }
+		copyto (&vptr, &fptr, '/', (*(vptr-1) != ']'));
+		state = 9;
+	      }
+	    break;
+            }
+
+	  case 7:				/* add '.dir' and exit */
+	    if ((nstate == N_OPEN)
+		|| (nstate == N_DOT))
+	      {
+		char *vp = vptr-1;
+		while (vp > vmsname)
+		  {
+		    if (*vp == ']')
+		      {
+			break;
+		      }
+		    if (*vp == '.')
+		      {
+			*vp = ']';
+			break;
+		      }
+		    vp--;
+		  }
+	      }
+	    strcpy (vptr, ".dir");
+	    vptr += 4;
+	    state = -1;
+	    break;
+
+	  case 8:				/* add ']' and exit */
+	    *vptr++ = ']';
+	    state = -1;
+	    break;
+
+	  case 9:			/* 17..21, fptr -> 1st '/' + 1 */
+            {
+            const char *s;
+	    if (*fptr == 0)
+	      {
+		if (type == 2)
+		  {
+		    state = 7;
+		  }
+		else
+		  state = 8;
+		break;
+	      }
+	    s = strchr (fptr, '/');
+	    if (s == 0)
+	      {
+		if (type != 1)
+		  {
+		    if (nstate == N_OPEN)
+		      {
+			*vptr++ = ']';
+			nstate = N_CLOSED;
+		      }
+		    as_dir = 0;
+		  }
+		else
+		  {
+		    if (nstate == N_OPEN)
+		      {
+			*vptr++ = '.';
+			nstate = N_DOT;
+		      }
+		    as_dir = 1;
+		  }
+	      }
+	    else
+	      {
+		while (*(s+1) == '/')
+		  s++;
+		if ( (type == 2)
+		    && (*(s+1) == 0))		/* 19(2), 21(2)*/
+		  {
+		    if (nstate != N_CLOSED)
+		      {
+			*vptr++ = ']';
+			nstate = N_CLOSED;
+		      }
+		    as_dir = 1;
+		  }
+		else
+		  {
+		    if (nstate == N_OPEN)
+		      {
+			*vptr++ = '.';
+			nstate = N_DOT;
+		      }
+		    as_dir = 1;
+		  }
+	      }
+	    if ( (*fptr == '.')			/* check for '..' or '../' */
+		&& (*(fptr+1) == '.')
+		&& ((*(fptr+2) == '/')
+		    || (*(fptr+2) == 0)) )
+	      {
+                char *vp;
+		fptr += 2;
+		if (*fptr == '/')
+		  {
+		    do
+		      {
+			fptr++;
+		      }
+		    while (*fptr == '/');
+		  }
+		else if (*fptr == 0)
+		  type = 1;
+		vptr--;				/* vptr -> '.' or ']' */
+		vp = vptr;
+		for (;;)
+		  {
+		    vp--;
+		    if (*vp == '.')		/* one back */
+		      {
+			vptr = vp;
+			nstate = N_OPEN;
+			break;
+		      }
+		    if (*vp == '[')		/* top level reached */
+		      {
+			if (*fptr == 0)
+			  {
+			    strcpy (vp, "[000000]");
+			    vptr = vp + 8;
+			    nstate = N_CLOSED;
+			    s = 0;
+			    break;
+			  }
+			else
+			  {
+			    vptr = vp+1;
+			    nstate = N_OPEN;
+			    break;
+			  }
+		      }
+		  }
+	      }
+	    else
+	      {
+		copyto (&vptr, &fptr, '/', as_dir);
+		if (nstate == N_DOT)
+		  nstate = N_OPEN;
+	      }
+	    if (s == 0)
+	      {					/* 18,20 */
+		if (type == 1)
+		  *vptr++ = ']';
+		state = -1;
+	      }
+	    else
+	      {
+		if (*(s+1) == 0)
+		  {
+		    if (type == 2)		/* 19,21 */
+		      {
+		        state = 7;
+		      }
+		    else
+		      {
+			*vptr++ = ']';
+			state = -1;
+		      }
+		  }
+	      }
+	    break;
+            }
+
+	  case 10:				/* 1,2 first is '.' */
+	    if (*fptr == '.')
+	      {
+		fptr++;
+		state = 11;
+	      }
+	    else
+	      state = 12;
+	    break;
+
+	  case 11:				/* 2, '..' at start */
+	    count = 1;
+	    if (*fptr != 0)
+	      {
+		if (*fptr != '/')		/* got ..xxx */
+		  {
+                    strcpy (vmsname, name);
+		    return vmsname;
+		  }
+		do				/* got ../ */
+		  {
+		    fptr++;
+		    while (*fptr == '/') fptr++;
+		    if (*fptr != '.')
+		      break;
+		    if (*(fptr+1) != '.')
+		      break;
+		    fptr += 2;
+		    if ((*fptr == 0)
+			|| (*fptr == '/'))
+		      count++;
+		  }
+		while (*fptr == '/');
+	      }
+	    {					/* got '..' or '../' */
+              char *vp;
+	      char cwdbuf[VMSMAXPATHLEN+1];
+
+	      vp = getcwd(cwdbuf, VMSMAXPATHLEN);
+	      if (vp == 0)
+		{
+                  vmsname[0] = '\0';
+		  return vmsname;    /* FIXME, err getcwd */
+		}
+	      strcpy (vptr, vp);
+	      vp = strchr (vptr, ']');
+	      if (vp != 0)
+		{
+		  nstate = N_OPEN;
+		  while (vp > vptr)
+		    {
+		      vp--;
+		      if (*vp == '[')
+			{
+			  vp++;
+			  strcpy (vp, "000000]");
+			  state = -1;
+			  break;
+			}
+		      else if (*vp == '.')
+			{
+			  if (--count == 0)
+			    {
+			      if (*fptr == 0)	/* had '..' or '../' */
+				{
+				  *vp++ = ']';
+				  state = -1;
+				}
+			      else			/* had '../xxx' */
+				{
+				  state = 9;
+				}
+			      *vp = '\0';
+			      break;
+			    }
+			}
+		    }
+		}
+	      vptr += strlen (vptr);
+	    }
+	    break;
+
+	  case 12:				/* 1, '.' at start */
+	    if (*fptr != 0)
+	      {
+		if (*fptr != '/')
+		  {
+                    strcpy (vmsname, name);
+		    return vmsname;
+		  }
+		while (*fptr == '/')
+		  fptr++;
+	      }
+
+	    {
+              char *vp;
+	      char cwdbuf[VMSMAXPATHLEN+1];
+
+	      vp = getcwd(cwdbuf, VMSMAXPATHLEN);
+	      if (vp == 0)
+		{
+                  vmsname[0] = '\0';
+		  return vmsname;    /*FIXME, err getcwd */
+		}
+	      strcpy (vptr, vp);
+            }
+            if (*fptr == 0)
+              {
+                state = -1;
+                break;
+              }
+            else
+              {
+                char *vp = strchr (vptr, ']');
+                if (vp == 0)
+                  {
+                    state = -1;
+                    break;
+                  }
+                *vp = '\0';
+                nstate = N_OPEN;
+                vptr += strlen (vptr);
+                state = 9;
+              }
+	    break;
+	}
+
+	}
+      while (state > 0);
+
+
+    }
+
+
+  /* directory conversion done
+     fptr -> filename part of input string
+     vptr -> free space in vmsname
+  */
+
+  *vptr++ = 0;
+
+  return vmsname;
+}
+
+
+
+/*
+  convert from vms-style to unix-style
+
+  dev:[dir1.dir2]	//dev/dir1/dir2/
+*/
+
+const char *
+unixify (const char *name)
+{
+  static char piece[512];
+  const char *s;
+  char *p;
+
+  if (strchr (name, '/') != 0)		/* already in unix style */
+    {
+      strcpy (piece, name);
+      return piece;
+    }
+
+  p = piece;
+  *p = 0;
+
+  /* device part */
+
+  s = strchr (name, ':');
+
+  if (s != 0)
+    {
+      int l = s - name;
+      *p++ = '/';
+      *p++ = '/';
+      strncpy (p, name, l);
+      p += l;
+    }
+
+  /* directory part */
+
+  *p++ = '/';
+  s = strchr (name, '[');
+
+  if (s != 0)
+    {
+      s++;
+      switch (*s)
+        {
+	  case ']':		/* [] */
+	    strcat (p, "./");
+	    break;
+	  case '-':		/* [- */
+	    strcat (p, "../");
+	    break;
+	  case '.':
+	    strcat (p, "./");	/* [. */
+	    break;
+	  default:
+	    s--;
+	    break;
+        }
+      s++;
+      while (*s)
+        {
+	  if (*s == '.')
+	    *p++ = '/';
+	  else
+	    *p++ = *s;
+	  s++;
+	  if (*s == ']')
+	    {
+	      s++;
+	      break;
+	    }
+        }
+      if (*s != 0)		/* more after ']' ?? */
+        {
+	  if (*(p-1) != '/')
+	    *p++ = '/';
+	  strcpy (p, s);		/* copy it anyway */
+        }
+    }
+
+  else		/* no '[' anywhere */
+
+    {
+      *p++ = 0;
+    }
+
+  /* force end with '/' */
+
+  if (*(p-1) != '/')
+    *p++ = '/';
+  *p = 0;
+
+  return piece;
+}
+
+/* EOF */
diff --git a/src/kmk/vmsjobs.c b/src/kmk/vmsjobs.c
new file mode 100644
index 0000000..f45c8a8
--- /dev/null
+++ b/src/kmk/vmsjobs.c
@@ -0,0 +1,1468 @@
+/* --------------- Moved here from job.c ---------------
+   This file must be #included in job.c, as it accesses static functions.
+
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <string.h>
+#include <descrip.h>
+#include <clidef.h>
+
+/* TODO - VMS specific header file conditionally included in makeint.h */
+
+#include <stsdef.h>
+#include <ssdef.h>
+void
+decc$exit (int status);
+
+/* Lowest legal non-success VMS exit code is 8 */
+/* GNU make only defines codes 0, 1, 2 */
+/* So assume any exit code > 8 is a VMS exit code */
+
+#ifndef MAX_EXPECTED_EXIT_CODE
+# define MAX_EXPECTED_EXIT_CODE 7
+#endif
+
+
+#if __CRTL_VER >= 70302000 && !defined(__VAX)
+# define MAX_DCL_LINE_LENGTH 4095
+# define MAX_DCL_CMD_LINE_LENGTH 8192
+#else
+# define MAX_DCL_LINE_LENGTH 255
+# define MAX_DCL_CMD_LINE_LENGTH 1024
+#endif
+#define MAX_DCL_TOKEN_LENGTH 255
+#define MAX_DCL_TOKENS 127
+
+enum auto_pipe { nopipe, add_pipe, dcl_pipe };
+
+char *vmsify (char *name, int type);
+
+static int vms_jobsefnmask = 0;
+
+/* returns whether path is assumed to be a unix like shell. */
+int
+_is_unixy_shell (const char *path)
+{
+  return vms_gnv_shell;
+}
+
+#define VMS_GETMSG_MAX 256
+static char vms_strsignal_text[VMS_GETMSG_MAX + 2];
+
+char *
+vms_strsignal (int status)
+{
+  if (status <= MAX_EXPECTED_EXIT_CODE)
+    sprintf (vms_strsignal_text, "lib$spawn returned %x", status);
+  else
+    {
+      int vms_status;
+      unsigned short * msg_len;
+      unsigned char out[4];
+      vms_status = SYS$GETMSG (status, &msg_len,
+                               vms_strsignal_text, 7, *out);
+    }
+
+  return vms_strsignal_text;
+}
+
+
+/* Wait for nchildren children to terminate */
+static void
+vmsWaitForChildren (int *status)
+{
+  while (1)
+    {
+      if (!vms_jobsefnmask)
+        {
+          *status = 0;
+          return;
+        }
+
+      *status = sys$wflor (32, vms_jobsefnmask);
+    }
+  return;
+}
+
+static int ctrlYPressed= 0;
+/* This is called at main or AST level. It is at AST level for DONTWAITFORCHILD
+   and at main level otherwise. In any case it is called when a child process
+   terminated. At AST level it won't get interrupted by anything except a
+   inner mode level AST.
+*/
+static int
+vmsHandleChildTerm (struct child *child)
+{
+  int exit_code;
+  register struct child *lastc, *c;
+  int child_failed;
+
+  /* The child efn is 0 when a built-in or null command is executed
+     successfully with out actually creating a child.
+  */
+  if (child->efn > 0)
+  {
+    vms_jobsefnmask &= ~(1 << (child->efn - 32));
+
+    lib$free_ef (&child->efn);
+  }
+  if (child->comname)
+    {
+      if (!ISDB (DB_JOBS) && !ctrlYPressed)
+        unlink (child->comname);
+      free (child->comname);
+    }
+
+  (void) sigblock (fatal_signal_mask);
+
+  /* First check to see if this is a POSIX exit status and handle */
+  if ((child->cstatus & VMS_POSIX_EXIT_MASK) == VMS_POSIX_EXIT_MASK)
+    {
+      exit_code = (child->cstatus >> 3) & 255;
+      if (exit_code != MAKE_SUCCESS)
+        child_failed = 1;
+    }
+  else
+    {
+      child_failed = !$VMS_STATUS_SUCCESS (child->cstatus);
+      if (child_failed)
+        exit_code = child->cstatus;
+    }
+
+  /* Search for a child matching the deceased one.  */
+  lastc = 0;
+#if defined(RECURSIVEJOBS)
+  /* I've had problems with recursive stuff and process handling */
+  for (c = children; c != 0 && c != child; lastc = c, c = c->next)
+    ;
+#else
+  c = child;
+#endif
+
+  if ($VMS_STATUS_SUCCESS (child->vms_launch_status))
+    {
+      /* Convert VMS success status to 0 for UNIX code to be happy */
+      child->vms_launch_status = 0;
+    }
+
+  /* Set the state flag to say the commands have finished.  */
+  c->file->command_state = cs_finished;
+  notice_finished_file (c->file);
+
+  (void) sigsetmask (sigblock (0) & ~(fatal_signal_mask));
+
+  return 1;
+}
+
+/* VMS:
+   Spawn a process executing the command in ARGV and return its pid. */
+
+/* local helpers to make ctrl+c and ctrl+y working, see below */
+#include <iodef.h>
+#include <libclidef.h>
+#include <ssdef.h>
+
+static int ctrlMask= LIB$M_CLI_CTRLY;
+static int oldCtrlMask;
+static int setupYAstTried= 0;
+static unsigned short int chan= 0;
+
+static void
+reEnableAst(void)
+{
+  lib$enable_ctrl (&oldCtrlMask,0);
+}
+
+static int
+astYHandler (void)
+{
+  struct child *c;
+  for (c = children; c != 0; c = c->next)
+    sys$delprc (&c->pid, 0, 0);
+  ctrlYPressed= 1;
+  kill (getpid(),SIGQUIT);
+  return SS$_NORMAL;
+}
+
+static void
+tryToSetupYAst(void)
+{
+  $DESCRIPTOR(inputDsc,"SYS$COMMAND");
+  int     status;
+  struct {
+    short int       status, count;
+    int     dvi;
+  } iosb;
+  unsigned short int loc_chan;
+
+  setupYAstTried++;
+
+  if (chan)
+    loc_chan= chan;
+  else
+    {
+      status= sys$assign(&inputDsc,&loc_chan,0,0);
+      if (!(status&SS$_NORMAL))
+        {
+          lib$signal(status);
+          return;
+        }
+    }
+  status= sys$qiow (0, loc_chan, IO$_SETMODE|IO$M_CTRLYAST,&iosb,0,0,
+                    astYHandler,0,0,0,0,0);
+  if (status==SS$_NORMAL)
+    status= iosb.status;
+  if (status!=SS$_NORMAL)
+    {
+      if (!chan)
+        sys$dassgn(loc_chan);
+      if (status!=SS$_ILLIOFUNC && status!=SS$_NOPRIV)
+        lib$signal(status);
+      return;
+    }
+
+  /* called from AST handler ? */
+  if (setupYAstTried>1)
+    return;
+  if (atexit(reEnableAst))
+    fprintf (stderr,
+             _("-warning, you may have to re-enable CTRL-Y handling from DCL.\n"));
+  status= lib$disable_ctrl (&ctrlMask, &oldCtrlMask);
+  if (!(status&SS$_NORMAL))
+    {
+      lib$signal(status);
+      return;
+    }
+  if (!chan)
+    chan = loc_chan;
+}
+
+/* Check if a token is too long */
+#define INC_TOKEN_LEN_OR_RETURN(x) {token->length++; \
+  if (token->length >= MAX_DCL_TOKEN_LENGTH) \
+    { token->cmd_errno = ERANGE; return x; }}
+
+#define INC_TOKEN_LEN_OR_BREAK {token->length++; \
+  if (token->length >= MAX_DCL_TOKEN_LENGTH) \
+    { token->cmd_errno = ERANGE; break; }}
+
+#define ADD_TOKEN_LEN_OR_RETURN(add_len, x) {token->length += add_len; \
+  if (token->length >= MAX_DCL_TOKEN_LENGTH) \
+    { token->cmd_errno = ERANGE; return x; }}
+
+/* Check if we are out of space for more tokens */
+#define V_NEXT_TOKEN { if (cmd_tkn_index < MAX_DCL_TOKENS) \
+  cmd_tokens[++cmd_tkn_index] = NULL; \
+  else { token.cmd_errno = E2BIG; break; } \
+  token.length = 0;}
+
+
+#define UPDATE_TOKEN {cmd_tokens[cmd_tkn_index] = strdup(token.text); \
+  V_NEXT_TOKEN;}
+
+#define EOS_ERROR(x) { if (*x == 0) { token->cmd_errno = ERANGE; break; }}
+
+struct token_info
+  {
+    char *text;       /* Parsed text */
+    int length;       /* Length of parsed text */
+    char *src;        /* Pointer to source text */
+    int cmd_errno;    /* Error status of parse */
+    int use_cmd_file; /* Force use of a command file */
+  };
+
+
+/* Extract a Posix single quoted string from input line */
+static char *
+posix_parse_sq (struct token_info *token)
+{
+  /* A Posix quoted string with no expansion unless in a string
+     Unix simulation means no lexical functions present.
+  */
+  char * q;
+  char * p;
+  q = token->text;
+  p = token->src;
+
+  *q++ = '"';
+  p++;
+  INC_TOKEN_LEN_OR_RETURN (p);
+
+  while (*p != '\'' && (token->length < MAX_DCL_TOKEN_LENGTH))
+    {
+      EOS_ERROR (p);
+      if (*p == '"')
+        {
+          /* Embedded double quotes need to be doubled */
+          *q++ = '"';
+          INC_TOKEN_LEN_OR_BREAK;
+          *q = '"';
+        }
+      else
+        *q = *p;
+
+      q++;
+      p++;
+      INC_TOKEN_LEN_OR_BREAK;
+    }
+  *q++ = '"';
+  p++;
+  INC_TOKEN_LEN_OR_RETURN (p);
+  *q = 0;
+  return p;
+}
+
+/* Extract a Posix double quoted string from input line */
+static char *
+posix_parse_dq (struct token_info *token)
+{
+  /* Unix mode:  Any imbedded \" becomes doubled.
+                 \t is tab, \\, \$ leading character stripped.
+                 $ character replaced with \' unless escaped.
+  */
+  char * q;
+  char * p;
+  q = token->text;
+  p = token->src;
+  *q++ = *p++;
+  INC_TOKEN_LEN_OR_RETURN (p);
+  while (*p != 0)
+    {
+      if (*p == '\\')
+        {
+          switch(p[1])
+            {
+            case 't':     /* Convert tabs */
+              *q = '\t';
+              p++;
+              break;
+            case '\\':     /* Just remove leading backslash */
+            case '$':
+              p++;
+              *q = *p;
+              break;
+            case '"':
+              p++;
+              *q = *p;
+              *q++ = '"';
+              INC_TOKEN_LEN_OR_BREAK;
+            default:      /* Pass through unchanged */
+              *q++ = *p++;
+              INC_TOKEN_LEN_OR_BREAK;
+            }
+          INC_TOKEN_LEN_OR_BREAK;
+        }
+      else if (*p == '$' && isalpha (p[1]))
+        {
+          /* A symbol we should be able to substitute */
+          *q++ = '\'';
+          INC_TOKEN_LEN_OR_BREAK;
+          *q = '\'';
+          INC_TOKEN_LEN_OR_BREAK;
+          token->use_cmd_file = 1;
+        }
+      else
+        {
+          *q = *p;
+          INC_TOKEN_LEN_OR_BREAK;
+          if (*p == '"')
+            {
+              p++;
+              q++;
+              break;
+            }
+        }
+      p++;
+      q++;
+    }
+  *q = 0;
+  return p;
+}
+
+/* Extract a VMS quoted string or substitution string from input line */
+static char *
+vms_parse_quotes (struct token_info *token)
+{
+  /* VMS mode, the \' means that a symbol substitution is starting
+     so while you might think you can just copy until the next
+     \'.  Unfortunately the substitution can be a lexical function
+     which can contain embedded strings and lexical functions.
+     Messy, so both types need to be handled together.
+  */
+  char * q;
+  char * p;
+  q = token->text;
+  p = token->src;
+  int parse_level[MAX_DCL_TOKENS + 1];
+  int nest = 0;
+
+  parse_level[0] = *p;
+  if (parse_level[0] == '\'')
+    token->use_cmd_file = 1;
+
+  *q++ = *p++;
+  INC_TOKEN_LEN_OR_RETURN (p);
+
+
+  /* Copy everything until after the next single quote at nest == 0 */
+  while (token->length < MAX_DCL_TOKEN_LENGTH)
+    {
+      EOS_ERROR (p);
+      *q = *p;
+      INC_TOKEN_LEN_OR_BREAK;
+      if ((*p == parse_level[nest]) && (p[1] != '"'))
+        {
+          if (nest == 0)
+            {
+              *q++ = *p++;
+              break;
+            }
+          nest--;
+        }
+      else
+        {
+          switch(*p)
+            {
+            case '\\':
+              /* Handle continuation on to next line */
+              if (p[1] != '\n')
+                break;
+              p++;
+              p++;
+              *q = *p;
+              break;
+            case '(':
+              /* Parenthesis only in single quote level */
+              if (parse_level[nest] == '\'')
+                {
+                  nest++;
+                  parse_level[nest] == ')';
+                }
+              break;
+            case '"':
+              /* Double quotes only in parenthesis */
+              if (parse_level[nest] == ')')
+                {
+                  nest++;
+                  parse_level[nest] == '"';
+                }
+              break;
+            case '\'':
+              /* Symbol substitution ony in double quotes */
+              if ((p[1] == '\'') && (parse_level[nest] == '"'))
+                {
+                  nest++;
+                  parse_level[nest] == '\'';
+                  *p++ = *q++;
+                  token->use_cmd_file = 1;
+                  INC_TOKEN_LEN_OR_BREAK;
+                  break;
+                }
+              *q = *p;
+            }
+        }
+      p++;
+      q++;
+      /* Pass through doubled double quotes */
+      if ((*p == '"') && (p[1] == '"') && (parse_level[nest] == '"'))
+      {
+        *p++ = *q++;
+        INC_TOKEN_LEN_OR_BREAK;
+        *p++ = *q++;
+        INC_TOKEN_LEN_OR_BREAK;
+      }
+    }
+  *q = 0;
+  return p;
+}
+
+/* Extract a $ string from the input line */
+static char *
+posix_parse_dollar (struct token_info *token)
+{
+  /* $foo becomes 'foo' */
+  char * q;
+  char * p;
+  q = token->text;
+  p = token->src;
+  token->use_cmd_file = 1;
+
+  p++;
+  *q++ = '\'';
+  INC_TOKEN_LEN_OR_RETURN (p);
+
+  while ((isalnum (*p)) || (*p == '_'))
+    {
+      *q++ = *p++;
+      INC_TOKEN_LEN_OR_BREAK;
+    }
+  *q++ = '\'';
+  while (1)
+    {
+      INC_TOKEN_LEN_OR_BREAK;
+      break;
+    }
+  *q = 0;
+  return p;
+}
+
+const char *vms_filechars = "0123456789abcdefghijklmnopqrstuvwxyz" \
+   "ABCDEFGHIJKLMNOPQRSTUVWXYZ[]<>:/_-.$";
+
+/* Simple text copy */
+static char *
+parse_text (struct token_info *token, int assignment_hack)
+{
+  char * q;
+  char * p;
+  int str_len;
+  q = token->text;
+  p = token->src;
+
+  /* If assignment hack, then this text needs to be double quoted. */
+  if (vms_unix_simulation && (assignment_hack == 2))
+    {
+      *q++ = '"';
+      INC_TOKEN_LEN_OR_RETURN (p);
+    }
+
+  *q++ = *p++;
+  INC_TOKEN_LEN_OR_RETURN (p);
+
+  while (*p != 0)
+    {
+      str_len = strspn (p, vms_filechars);
+      if (str_len == 0)
+        {
+          /* Pass through backslash escapes in Unix simulation
+             probably will not work anyway.
+             All any character after a ^ otherwise to support EFS.
+          */
+          if (vms_unix_simulation && (p[0] == '\\') && (p[1] != 0))
+            str_len = 2;
+          else if ((p[0] == '^') && (p[1] != 0))
+            str_len = 2;
+          else if (!vms_unix_simulation && (p[0] == ';'))
+            str_len = 1;
+
+          if (str_len == 0)
+            {
+              /* If assignment hack, then this needs to be double quoted. */
+              if (vms_unix_simulation && (assignment_hack == 2))
+              {
+                *q++ = '"';
+                INC_TOKEN_LEN_OR_RETURN (p);
+              }
+              *q = 0;
+              return p;
+            }
+        }
+      if (str_len > 0)
+        {
+          ADD_TOKEN_LEN_OR_RETURN (str_len, p);
+          strncpy (q, p, str_len);
+          p += str_len;
+          q += str_len;
+          *q = 0;
+        }
+    }
+  /* If assignment hack, then this text needs to be double quoted. */
+  if (vms_unix_simulation && (assignment_hack == 2))
+    {
+      *q++ = '"';
+      INC_TOKEN_LEN_OR_RETURN (p);
+    }
+  return p;
+}
+
+/* single character copy */
+static char *
+parse_char (struct token_info *token, int count)
+{
+  char * q;
+  char * p;
+  q = token->text;
+  p = token->src;
+
+  while (count > 0)
+    {
+      *q++ = *p++;
+      INC_TOKEN_LEN_OR_RETURN (p);
+      count--;
+    }
+  *q = 0;
+  return p;
+}
+
+/* Build a command string from the collected tokens
+   and process built-ins now
+*/
+static struct dsc$descriptor_s *
+build_vms_cmd (char **cmd_tokens,
+               enum auto_pipe use_pipe_cmd,
+               int append_token)
+{
+  struct dsc$descriptor_s *cmd_dsc;
+  int cmd_tkn_index;
+  char * cmd;
+  int cmd_len;
+  int semicolon_seen;
+
+  cmd_tkn_index = 0;
+  cmd_dsc = xmalloc (sizeof (struct dsc$descriptor_s));
+
+  /* Empty command? */
+  if (cmd_tokens[0] == NULL)
+    {
+      cmd_dsc->dsc$a_pointer = NULL;
+      cmd_dsc->dsc$w_length = 0;
+      return cmd_dsc;
+    }
+
+  /* Max DCL command + 1 extra token and trailing space */
+  cmd = xmalloc (MAX_DCL_CMD_LINE_LENGTH + 256);
+
+  cmd[0] = '$';
+  cmd[1] = 0;
+  cmd_len = 1;
+
+  /* Handle real or auto-pipe */
+  if (use_pipe_cmd == add_pipe)
+    {
+      /* We need to auto convert to a pipe command */
+      strcat (cmd, "pipe ");
+      cmd_len += 5;
+    }
+
+  semicolon_seen = 0;
+  while (cmd_tokens[cmd_tkn_index] != NULL)
+    {
+
+      /* Check for buffer overflow */
+      if (cmd_len > MAX_DCL_CMD_LINE_LENGTH)
+        {
+          errno = E2BIG;
+          break;
+        }
+
+      /* Eliminate double ';' */
+      if (semicolon_seen && (cmd_tokens[cmd_tkn_index][0] == ';'))
+        {
+          semicolon_seen = 0;
+          free (cmd_tokens[cmd_tkn_index++]);
+          if (cmd_tokens[cmd_tkn_index] == NULL)
+            break;
+        }
+
+      /* Special handling for CD built-in */
+      if (strncmp (cmd_tokens[cmd_tkn_index], "builtin_cd", 11) == 0)
+        {
+          int result;
+          semicolon_seen = 0;
+          free (cmd_tokens[cmd_tkn_index]);
+          cmd_tkn_index++;
+          if (cmd_tokens[cmd_tkn_index] == NULL)
+            break;
+          DB(DB_JOBS, (_("BUILTIN CD %s\n"), cmd_tokens[cmd_tkn_index]));
+
+          /* TODO: chdir fails with some valid syntaxes */
+          result = chdir (cmd_tokens[cmd_tkn_index]);
+          if (result != 0)
+            {
+              /* TODO: Handle failure better */
+              free (cmd);
+              while (cmd_tokens[cmd_tkn_index] == NULL)
+                free (cmd_tokens[cmd_tkn_index++]);
+              cmd_dsc->dsc$w_length = -1;
+              cmd_dsc->dsc$a_pointer = NULL;
+              return cmd_dsc;
+            }
+        }
+      else if (strncmp (cmd_tokens[cmd_tkn_index], "exit", 5) == 0)
+        {
+          /* Copy the exit command */
+          semicolon_seen = 0;
+          strcpy (&cmd[cmd_len], cmd_tokens[cmd_tkn_index]);
+          cmd_len += strlen (cmd_tokens[cmd_tkn_index]);
+          free (cmd_tokens[cmd_tkn_index++]);
+          if (cmd_len > MAX_DCL_CMD_LINE_LENGTH)
+            {
+              errno = E2BIG;
+              break;
+            }
+
+          /* Optional whitespace */
+          if (isspace (cmd_tokens[cmd_tkn_index][0]))
+            {
+              strcpy (&cmd[cmd_len], cmd_tokens[cmd_tkn_index]);
+              cmd_len += strlen (cmd_tokens[cmd_tkn_index]);
+              free (cmd_tokens[cmd_tkn_index++]);
+              if (cmd_len > MAX_DCL_CMD_LINE_LENGTH)
+              {
+                errno = E2BIG;
+                break;
+              }
+            }
+
+          /* There should be a status, but it is optional */
+          if (cmd_tokens[cmd_tkn_index][0] == ';')
+            continue;
+
+          /* If Unix simulation, add '((' */
+          if (vms_unix_simulation)
+            {
+              strcpy (&cmd[cmd_len], "((");
+              cmd_len += 2;
+              if (cmd_len > MAX_DCL_CMD_LINE_LENGTH)
+                {
+                  errno = E2BIG;
+                  break;
+                }
+            }
+
+          /* Add the parameter */
+          strcpy (&cmd[cmd_len], cmd_tokens[cmd_tkn_index]);
+          cmd_len += strlen (cmd_tokens[cmd_tkn_index]);
+          free (cmd_tokens[cmd_tkn_index++]);
+          if (cmd_len > MAX_DCL_CMD_LINE_LENGTH)
+            {
+              errno = E2BIG;
+              break;
+            }
+
+          /* Add " * 8) .and. %x7f8) .or. %x1035a002" */
+          if (vms_unix_simulation)
+            {
+              const char *end_str = " * 8) .and. %x7f8) .or. %x1035a002";
+              strcpy (&cmd[cmd_len], end_str);
+              cmd_len += strlen (end_str);
+              if (cmd_len > MAX_DCL_CMD_LINE_LENGTH)
+                {
+                  errno = E2BIG;
+                  break;
+                }
+            }
+          continue;
+        }
+
+      /* auto pipe needs spaces before semicolon */
+      if (use_pipe_cmd == add_pipe)
+        if (cmd_tokens[cmd_tkn_index][0] == ';')
+          {
+            cmd[cmd_len++] = ' ';
+            semicolon_seen = 1;
+            if (cmd_len > MAX_DCL_CMD_LINE_LENGTH)
+              {
+                errno = E2BIG;
+                break;
+              }
+          }
+        else
+          {
+            char ch;
+            ch = cmd_tokens[cmd_tkn_index][0];
+            if (!(ch == ' ' || ch == '\t'))
+              semicolon_seen = 0;
+          }
+
+      strcpy (&cmd[cmd_len], cmd_tokens[cmd_tkn_index]);
+      cmd_len += strlen (cmd_tokens[cmd_tkn_index]);
+
+      free (cmd_tokens[cmd_tkn_index++]);
+
+      /* Skip the append tokens if they exist */
+      if (cmd_tkn_index == append_token)
+        {
+          free (cmd_tokens[cmd_tkn_index++]);
+          if (isspace (cmd_tokens[cmd_tkn_index][0]))
+            free (cmd_tokens[cmd_tkn_index++]);
+          free (cmd_tokens[cmd_tkn_index++]);
+        }
+    }
+
+  cmd[cmd_len] = 0;
+  cmd_dsc->dsc$w_length = cmd_len;
+  cmd_dsc->dsc$a_pointer = cmd;
+  cmd_dsc->dsc$b_dtype = DSC$K_DTYPE_T;
+  cmd_dsc->dsc$b_class = DSC$K_CLASS_S;
+
+  return cmd_dsc;
+}
+
+int
+child_execute_job (struct child *child, char *argv)
+{
+  int i;
+
+  static struct dsc$descriptor_s *cmd_dsc;
+  static struct dsc$descriptor_s pnamedsc;
+  int spflags = CLI$M_NOWAIT;
+  int status;
+  int comnamelen;
+  char procname[100];
+
+  char *p;
+  char *cmd_tokens[(MAX_DCL_TOKENS * 2) + 1]; /* whitespace does not count */
+  char token_str[MAX_DCL_TOKEN_LENGTH + 1];
+  struct token_info token;
+  int cmd_tkn_index;
+  int paren_level = 0;
+  enum auto_pipe use_pipe_cmd = nopipe;
+  int append_token = -1;
+  char *append_file = NULL;
+  int unix_echo_cmd = 0;  /* Special handle Unix echo command */
+  int assignment_hack = 0; /* Handle x=y command as piped command */
+
+  /* Parse IO redirection.  */
+
+  child->comname = NULL;
+
+  DB (DB_JOBS, ("child_execute_job (%s)\n", argv));
+
+  while (isspace ((unsigned char)*argv))
+    argv++;
+
+  if (*argv == 0)
+    {
+      /* Only a built-in or a null command - Still need to run term AST */
+      child->cstatus = VMS_POSIX_EXIT_MASK;
+      child->vms_launch_status = SS$_NORMAL;
+      /* TODO what is this "magic number" */
+      child->pid = 270163; /* Special built-in */
+      child->efn = 0;
+      vmsHandleChildTerm (child);
+      return 1;
+    }
+
+  sprintf (procname, "GMAKE_%05x", getpid () & 0xfffff);
+  pnamedsc.dsc$w_length = strlen (procname);
+  pnamedsc.dsc$a_pointer = procname;
+  pnamedsc.dsc$b_dtype = DSC$K_DTYPE_T;
+  pnamedsc.dsc$b_class = DSC$K_CLASS_S;
+
+  /* Old */
+  /* Handle comments and redirection.
+     For ONESHELL, the redirection must be on the first line. Any other
+     redirection token is handled by DCL, that is, the pipe command with
+     redirection can be used, but it should not be used on the first line
+     for ONESHELL. */
+
+  /* VMS parser notes:
+     1. A token is any of DCL verbs, qualifiers, parameters, or punctuation.
+     2. Only MAX_DCL_TOKENS per line in both one line or command file mode.
+     3. Each token limited to MAC_DCL_TOKEN_LENGTH
+     4. If the line to DCL is greater than MAX_DCL_LINE_LENGTH then a
+        command file must be used.
+     5. Currently a command file must be used symbol substitution is to
+        be performed.
+     6. Currently limiting command files to 2 * MAX_DCL_TOKENS.
+
+     Build both a command file token list and command line token list
+     until it is determined that the command line limits are exceeded.
+  */
+
+  cmd_tkn_index = 0;
+  cmd_tokens[cmd_tkn_index] = NULL;
+  p = argv;
+
+  token.text = token_str;
+  token.length = 0;
+  token.cmd_errno = 0;
+  token.use_cmd_file = 0;
+
+  while (*p != 0)
+    {
+      /* We can not build this command so give up */
+      if (token.cmd_errno != 0)
+        break;
+
+      token.src = p;
+
+      switch (*p)
+        {
+        case '\'':
+          if (vms_unix_simulation || unix_echo_cmd)
+            {
+              p = posix_parse_sq (&token);
+              UPDATE_TOKEN;
+              break;
+            }
+
+          /* VMS mode, the \' means that a symbol substitution is starting
+             so while you might think you can just copy until the next
+             \'.  Unfortunately the substitution can be a lexical function
+             which can contain embedded strings and lexical functions.
+             Messy.
+          */
+          p = vms_parse_quotes (&token);
+          UPDATE_TOKEN;
+          break;
+        case '"':
+          if (vms_unix_simulation)
+            {
+              p = posix_parse_dq (&token);
+              UPDATE_TOKEN;
+              break;
+            }
+
+          /* VMS quoted string, can contain lexical functions with
+             quoted strings and nested lexical functions.
+          */
+          p = vms_parse_quotes (&token);
+          UPDATE_TOKEN;
+          break;
+
+        case '$':
+          if (vms_unix_simulation)
+            {
+              p = posix_parse_dollar (&token);
+              UPDATE_TOKEN;
+              break;
+            }
+
+          /* Otherwise nothing special */
+          p = parse_text (&token, 0);
+          UPDATE_TOKEN;
+          break;
+        case '\\':
+          if (p[1] == '\n')
+            {
+              /* Line continuation, remove it */
+              p += 2;
+              break;
+            }
+
+          /* Ordinary character otherwise */
+          if (assignment_hack != 0)
+            assignment_hack++;
+          if (assignment_hack > 2)
+            {
+              assignment_hack = 0;          /* Reset */
+              if (use_pipe_cmd == nopipe)   /* force pipe use */
+                use_pipe_cmd = add_pipe;
+              token_str[0] = ';';              /* add ; token */
+              token_str[1] = 0;
+              UPDATE_TOKEN;
+            }
+          p = parse_text (&token, assignment_hack);
+          UPDATE_TOKEN;
+          break;
+        case '!':
+        case '#':
+          /* Unix '#' is VMS '!' which comments out the rest of the line.
+             Historically the rest of the line has been skipped.
+             Not quite the right thing to do, as the f$verify lexical
+             function works in comments.  But this helps keep the line
+             lengths short.
+          */
+          unix_echo_cmd = 0;
+          while (*p != '\n' && *p != 0)
+            p++;
+          break;
+        case '(':
+          /* Subshell, equation, or lexical function argument start */
+          p = parse_char (&token, 1);
+          UPDATE_TOKEN;
+          paren_level++;
+          break;
+        case ')':
+          /* Close out a paren level */
+          p = parse_char (&token, 1);
+          UPDATE_TOKEN;
+          paren_level--;
+          /* TODO: Should we diagnose if paren_level goes negative? */
+          break;
+        case '&':
+          if (isalpha (p[1]) && !vms_unix_simulation)
+            {
+              /* VMS symbol substitution */
+              p = parse_text (&token, 0);
+              token.use_cmd_file = 1;
+              UPDATE_TOKEN;
+              break;
+            }
+          if (use_pipe_cmd == nopipe)
+            use_pipe_cmd = add_pipe;
+          if (p[1] != '&')
+            p = parse_char (&token, 1);
+          else
+            p = parse_char (&token, 2);
+          UPDATE_TOKEN;
+          break;
+        case '|':
+          if (use_pipe_cmd == nopipe)
+            use_pipe_cmd = add_pipe;
+          if (p[1] != '|')
+            p = parse_char (&token, 1);
+          else
+            p = parse_char (&token, 2);
+          UPDATE_TOKEN;
+          break;
+        case ';':
+          /* Separator - convert to a pipe command. */
+          unix_echo_cmd = 0;
+        case '<':
+          if (use_pipe_cmd == nopipe)
+            use_pipe_cmd = add_pipe;
+          p = parse_char (&token, 1);
+          UPDATE_TOKEN;
+          break;
+        case '>':
+          if (use_pipe_cmd == nopipe)
+            use_pipe_cmd = add_pipe;
+          if (p[1] == '>')
+            {
+              /* Parsing would have been simple until support for the >>
+                 append redirect was added.
+                 Implementation needs:
+                 * if not exist output file create empty
+                 * open/append gnv$make_temp??? output_file
+                 * define/user sys$output gnv$make_temp???
+                 ** And all this done before the command previously tokenized.
+                 * command previously tokenized
+                 * close gnv$make_temp???
+              */
+              p = parse_char (&token, 2);
+              append_token = cmd_tkn_index;
+              token.use_cmd_file = 1;
+            }
+          else
+            p = parse_char (&token, 1);
+          UPDATE_TOKEN;
+          break;
+        case '/':
+          /* Unix path or VMS option start, read until non-path symbol */
+          if (assignment_hack != 0)
+            assignment_hack++;
+          if (assignment_hack > 2)
+            {
+              assignment_hack = 0;          /* Reset */
+              if (use_pipe_cmd == nopipe)   /* force pipe use */
+                use_pipe_cmd = add_pipe;
+              token_str[0] = ';';              /* add ; token */
+              token_str[1] = 0;
+              UPDATE_TOKEN;
+            }
+          p = parse_text (&token, assignment_hack);
+          UPDATE_TOKEN;
+          break;
+        case ':':
+          if ((p[1] == 0) || isspace (p[1]))
+            {
+              /* Unix Null command - treat as comment until next command */
+              unix_echo_cmd = 0;
+              p++;
+              while (*p != 0)
+                {
+                  if (*p == ';')
+                    {
+                      /* Remove Null command from pipeline */
+                      p++;
+                      break;
+                    }
+                  p++;
+                }
+              break;
+            }
+
+          /* String assignment */
+          /* := :== or : */
+          if (p[1] != '=')
+            p = parse_char (&token, 1);
+          else if (p[2] != '=')
+            p = parse_char (&token, 2);
+          else
+            p = parse_char (&token, 3);
+          UPDATE_TOKEN;
+          break;
+        case '=':
+          /* = or == */
+          /* If this is not an echo statement, this could be a shell
+             assignment.  VMS requires the target to be quoted if it
+             is not a macro substitution */
+          if (!unix_echo_cmd && vms_unix_simulation && (assignment_hack == 0))
+            assignment_hack = 1;
+          if (p[1] != '=')
+            p = parse_char (&token, 1);
+          else
+            p = parse_char (&token, 2);
+          UPDATE_TOKEN;
+          break;
+        case '+':
+        case '-':
+        case '*':
+          p = parse_char (&token, 1);
+          UPDATE_TOKEN;
+          break;
+        case '.':
+          /* .xxx. operation, VMS does not require the trailing . */
+          p = parse_text (&token, 0);
+          UPDATE_TOKEN;
+          break;
+        default:
+          /* Skip repetitive whitespace */
+          if (isspace (*p))
+            {
+              p = parse_char (&token, 1);
+
+              /* Force to a space or a tab */
+              if ((token_str[0] != ' ') ||
+                  (token_str[0] != '\t'))
+                token_str[0] = ' ';
+              UPDATE_TOKEN;
+
+              while (isspace (*p))
+                p++;
+              if (assignment_hack != 0)
+                assignment_hack++;
+              break;
+            }
+
+          if (assignment_hack != 0)
+            assignment_hack++;
+          if (assignment_hack > 2)
+            {
+              assignment_hack = 0;          /* Reset */
+              if (use_pipe_cmd == nopipe)   /* force pipe use */
+                use_pipe_cmd = add_pipe;
+              token_str[0] = ';';              /* add ; token */
+              token_str[1] = 0;
+              UPDATE_TOKEN;
+            }
+          p = parse_text (&token, assignment_hack);
+          if (strncasecmp (token.text, "echo", 4) == 0)
+            unix_echo_cmd = 1;
+          else if (strncasecmp (token.text, "pipe", 4) == 0)
+            use_pipe_cmd = dcl_pipe;
+          UPDATE_TOKEN;
+          break;
+        }
+    }
+
+  /* End up here with a list of tokens to build a command line.
+     Deal with errors detected during parsing.
+   */
+  if (token.cmd_errno != 0)
+    {
+      while (cmd_tokens[cmd_tkn_index] == NULL)
+        free (cmd_tokens[cmd_tkn_index++]);
+      child->cstatus = VMS_POSIX_EXIT_MASK | (MAKE_TROUBLE << 3);
+      child->vms_launch_status = SS$_ABORT;
+      /* TODO what is this "magic number" */
+      child->pid = 270163; /* Special built-in */
+      child->efn = 0;
+      errno = token.cmd_errno;
+      return 0;
+    }
+
+  /* Save any redirection to append file */
+  if (append_token != -1)
+    {
+      int file_token;
+      char * lastdot;
+      char * lastdir;
+      char * raw_append_file;
+      file_token = append_token;
+      file_token++;
+      if (isspace (cmd_tokens[file_token][0]))
+        file_token++;
+      raw_append_file = vmsify (cmd_tokens[file_token], 0);
+      /* VMS DCL needs a trailing dot if null file extension */
+      lastdot = strrchr(raw_append_file, '.');
+      lastdir = strrchr(raw_append_file, ']');
+      if (lastdir == NULL)
+        lastdir = strrchr(raw_append_file, '>');
+      if (lastdir == NULL)
+        lastdir = strrchr(raw_append_file, ':');
+      if ((lastdot == NULL) || (lastdot > lastdir))
+        {
+          append_file = xmalloc (strlen (raw_append_file) + 1);
+          strcpy (append_file, raw_append_file);
+          strcat (append_file, ".");
+        }
+      else
+        append_file = strdup(raw_append_file);
+    }
+
+  cmd_dsc = build_vms_cmd (cmd_tokens, use_pipe_cmd, append_token);
+  if (cmd_dsc->dsc$a_pointer == NULL)
+    {
+      if (cmd_dsc->dsc$w_length < 0)
+        {
+          free (cmd_dsc);
+          child->cstatus = VMS_POSIX_EXIT_MASK | (MAKE_TROUBLE << 3);
+          child->vms_launch_status = SS$_ABORT;
+          /* TODO what is this "magic number" */
+          child->pid = 270163; /* Special built-in */
+          child->efn = 0;
+          return 0;
+        }
+
+      /* Only a built-in or a null command - Still need to run term AST */
+      free (cmd_dsc);
+      child->cstatus = VMS_POSIX_EXIT_MASK;
+      child->vms_launch_status = SS$_NORMAL;
+      /* TODO what is this "magic number" */
+      child->pid = 270163; /* Special built-in */
+      child->efn = 0;
+      vmsHandleChildTerm (child);
+      return 1;
+    }
+
+  if (cmd_dsc->dsc$w_length > MAX_DCL_LINE_LENGTH)
+    token.use_cmd_file = 1;
+
+  DB(DB_JOBS, (_("DCL: %s\n"), cmd_dsc->dsc$a_pointer));
+
+  /* Enforce the creation of a command file if "vms_always_use_cmd_file" is
+     non-zero.
+     Further, this way DCL reads the input stream and therefore does
+     'forced' symbol substitution, which it doesn't do for one-liners when
+     they are 'lib$spawn'ed.
+
+     Otherwise the behavior is:
+
+     Create a *.com file if either the command is too long for
+     lib$spawn, or if a redirect appending to a file is desired, or
+     symbol substitition.
+  */
+
+  if (vms_always_use_cmd_file || token.use_cmd_file)
+    {
+      FILE *outfile;
+      int cmd_len;
+
+      outfile = output_tmpfile (&child->comname,
+                                "sys$scratch:gnv$make_cmdXXXXXX.com");
+      /*                                          012345678901234567890 */
+      if (outfile == 0)
+        pfatal_with_name (_("fopen (temporary file)"));
+      comnamelen = strlen (child->comname);
+
+      /* The whole DCL "script" is executed as one action, and it behaves as
+         any DCL "script", that is errors stop it but warnings do not. Usually
+         the command on the last line, defines the exit code.  However, with
+         redirections there is a prolog and possibly an epilog to implement
+         the redirection.  Both are part of the script which is actually
+         executed. So if the redirection encounters an error in the prolog,
+         the user actions will not run; if in the epilog, the user actions
+         ran, but output is not captured. In both error cases, the error of
+         redirection is passed back and not the exit code of the actions. The
+         user should be able to enable DCL "script" verification with "set
+         verify". However, the prolog and epilog commands are not shown. Also,
+         if output redirection is used, the verification output is redirected
+         into that file as well. */
+      fprintf (outfile, "$ gnv$$make_verify = \"''f$verify(0)'\"\n");
+      fprintf (outfile, "$ gnv$$make_pid = f$getjpi(\"\",\"pid\")\n");
+      fprintf (outfile, "$ on error then $ goto gnv$$make_error\n");
+
+      /* Handle append redirection */
+      if (append_file != NULL)
+        {
+          /* If file does not exist, create it */
+          fprintf (outfile,
+                   "$ gnv$$make_al = \"gnv$$make_append''gnv$$make_pid'\"\n");
+          fprintf (outfile,
+                   "$ if f$search(\"%s\") .eqs. \"\" then create %s\n",
+                   append_file, append_file);
+
+          fprintf (outfile,
+                   "$ open/append 'gnv$$make_al' %s\n", append_file);
+
+          /* define sys$output to that file */
+          fprintf (outfile,
+                   "$ define/user sys$output 'gnv$$make_al'\n");
+          DB (DB_JOBS, (_("Append output to %s\n"), append_file));
+          free(append_file);
+        }
+
+      fprintf (outfile, "$ gnv$$make_verify = f$verify(gnv$$make_verify)\n");
+
+      /* TODO:
+         Only for ONESHELL there will be several commands separated by
+         '\n'. But there can always be multiple continuation lines.
+      */
+
+      fprintf (outfile, "%s\n", cmd_dsc->dsc$a_pointer);
+      fprintf (outfile, "$ gnv$$make_status_2 = $status\n");
+      fprintf (outfile, "$ goto gnv$$make_exit\n");
+
+      /* Exit and clean up */
+      fprintf (outfile, "$ gnv$$make_error: ! 'f$verify(0)\n");
+      fprintf (outfile, "$ gnv$$make_status_2 = $status\n");
+
+      if (append_token != -1)
+        {
+          fprintf (outfile, "$ deassign sys$output\n");
+          fprintf (outfile, "$ close 'gnv$$make_al'\n");
+
+          DB (DB_JOBS,
+              (_("Append %.*s and cleanup\n"), comnamelen-3, child->comname));
+        }
+      fprintf (outfile, "$ gnv$$make_exit: ! 'f$verify(0)\n");
+      fprintf (outfile,
+             "$ exit 'gnv$$make_status_2' + (0*f$verify(gnv$$make_verify))\n");
+
+      fclose (outfile);
+
+      free (cmd_dsc->dsc$a_pointer);
+      cmd_dsc->dsc$a_pointer = xmalloc (256 + 4);
+      sprintf (cmd_dsc->dsc$a_pointer, "$ @%s", child->comname);
+      cmd_dsc->dsc$w_length = strlen (cmd_dsc->dsc$a_pointer);
+
+      DB (DB_JOBS, (_("Executing %s instead\n"), child->comname));
+    }
+
+  child->efn = 0;
+  while (child->efn < 32 || child->efn > 63)
+    {
+      status = LIB$GET_EF ((unsigned long *)&child->efn);
+      if (!$VMS_STATUS_SUCCESS (status))
+        {
+          if (child->comname)
+            {
+              if (!ISDB (DB_JOBS))
+                unlink (child->comname);
+              free (child->comname);
+            }
+          return 0;
+        }
+    }
+
+  SYS$CLREF (child->efn);
+
+  vms_jobsefnmask |= (1 << (child->efn - 32));
+
+  /* Export the child environment into DCL symbols */
+  if (child->environment != 0)
+    {
+      char **ep = child->environment;
+      while (*ep != 0)
+        {
+          vms_putenv_symbol (*ep);
+          *ep++;
+        }
+    }
+
+  /*
+    LIB$SPAWN  [command-string]
+    [,input-file]
+    [,output-file]
+    [,flags]
+    [,process-name]
+    [,process-id] [,completion-status-address] [,byte-integer-event-flag-num]
+    [,AST-address] [,varying-AST-argument]
+    [,prompt-string] [,cli] [,table]
+  */
+
+#ifndef DONTWAITFORCHILD
+  /*
+   * Code to make ctrl+c and ctrl+y working.
+   * The problem starts with the synchronous case where after lib$spawn is
+   * called any input will go to the child. But with input re-directed,
+   * both control characters won't make it to any of the programs, neither
+   * the spawning nor to the spawned one. Hence the caller needs to spawn
+   * with CLI$M_NOWAIT to NOT give up the input focus. A sys$waitfr
+   * has to follow to simulate the wanted synchronous behaviour.
+   * The next problem is ctrl+y which isn't caught by the crtl and
+   * therefore isn't converted to SIGQUIT (for a signal handler which is
+   * already established). The only way to catch ctrl+y, is an AST
+   * assigned to the input channel. But ctrl+y handling of DCL needs to be
+   * disabled, otherwise it will handle it. Not to mention the previous
+   * ctrl+y handling of DCL needs to be re-established before make exits.
+   * One more: At the time of LIB$SPAWN signals are blocked. SIGQUIT will
+   * make it to the signal handler after the child "normally" terminates.
+   * This isn't enough. It seems reasonable for simple command lines like
+   * a 'cc foobar.c' spawned in a subprocess but it is unacceptable for
+   * spawning make. Therefore we need to abort the process in the AST.
+   *
+   * Prior to the spawn it is checked if an AST is already set up for
+   * ctrl+y, if not one is set up for a channel to SYS$COMMAND. In general
+   * this will work except if make is run in a batch environment, but there
+   * nobody can press ctrl+y. During the setup the DCL handling of ctrl+y
+   * is disabled and an exit handler is established to re-enable it.
+   * If the user interrupts with ctrl+y, the assigned AST will fire, force
+   * an abort to the subprocess and signal SIGQUIT, which will be caught by
+   * the already established handler and will bring us back to common code.
+   * After the spawn (now /nowait) a sys$waitfr simulates the /wait and
+   * enables the ctrl+y be delivered to this code. And the ctrl+c too,
+   * which the crtl converts to SIGINT and which is caught by the common
+   * signal handler. Because signals were blocked before entering this code
+   * sys$waitfr will always complete and the SIGQUIT will be processed after
+   * it (after termination of the current block, somewhere in common code).
+   * And SIGINT too will be delayed. That is ctrl+c can only abort when the
+   * current command completes. Anyway it's better than nothing :-)
+   */
+
+  if (!setupYAstTried)
+    tryToSetupYAst();
+  child->vms_launch_status = lib$spawn (cmd_dsc,               /* cmd-string */
+                     NULL, /* input-file */
+                     NULL, /* output-file */
+                     &spflags,                                 /* flags */
+                     &pnamedsc,                                /* proc name */
+                     &child->pid, &child->cstatus, &child->efn,
+                     0, 0,
+                     0, 0, 0);
+
+  status = child->vms_launch_status;
+  if ($VMS_STATUS_SUCCESS (status))
+    {
+      status = sys$waitfr (child->efn);
+      vmsHandleChildTerm (child);
+    }
+#else
+  child->vms_launch_status = lib$spawn (cmd_dsc,
+                      NULL,
+                      NULL,
+                      &spflags,
+                      &pnamedsc,
+                      &child->pid, &child->cstatus, &child->efn,
+                      vmsHandleChildTerm, child,
+                      0, 0, 0);
+   status = child->vms_launch_status;
+#endif
+
+  /* Free the pointer if not a command file */
+  if (!vms_always_use_cmd_file && !token.use_cmd_file)
+    free (cmd_dsc->dsc$a_pointer);
+  free (cmd_dsc);
+
+  if (!$VMS_STATUS_SUCCESS (status))
+    {
+      switch (status)
+        {
+        case SS$_EXQUOTA:
+          errno = EPROCLIM;
+          break;
+        default:
+          errno = EFAIL;
+        }
+    }
+
+  /* Restore the VMS symbols that were changed */
+  if (child->environment != 0)
+    {
+      char **ep = child->environment;
+      while (*ep != 0)
+        {
+          vms_restore_symbol (*ep);
+          *ep++;
+        }
+    }
+
+  return (status & 1);
+}
diff --git a/src/kmk/vpath.c b/src/kmk/vpath.c
new file mode 100644
index 0000000..ed70208
--- /dev/null
+++ b/src/kmk/vpath.c
@@ -0,0 +1,647 @@
+/* Implementation of pattern-matching file search paths for GNU Make.
+Copyright (C) 1988-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "variable.h"
+#ifdef WINDOWS32
+#include "pathstuff.h"
+#endif
+
+
+/* Structure used to represent a selective VPATH searchpath.  */
+
+struct vpath
+  {
+    struct vpath *next; /* Pointer to next struct in the linked list.  */
+    const char *pattern;/* The pattern to match.  */
+    const char *percent;/* Pointer into 'pattern' where the '%' is.  */
+    unsigned int patlen;/* Length of the pattern.  */
+    const char **searchpath; /* Null-terminated list of directories.  */
+    unsigned int maxlen;/* Maximum length of any entry in the list.  */
+  };
+
+/* Linked-list of all selective VPATHs.  */
+
+static struct vpath *vpaths;
+
+/* Structure for the general VPATH given in the variable.  */
+
+static struct vpath *general_vpath;
+
+/* Structure for GPATH given in the variable.  */
+
+static struct vpath *gpaths;
+
+
+/* Reverse the chain of selective VPATH lists so they will be searched in the
+   order given in the makefiles and construct the list from the VPATH
+   variable.  */
+
+void
+build_vpath_lists (void)
+{
+  register struct vpath *new = 0;
+  register struct vpath *old, *nexto;
+  register char *p;
+#ifdef CONFIG_WITH_OPTIMIZATION_HACKS
+  char expr[64];
+#endif 
+
+  /* Reverse the chain.  */
+  for (old = vpaths; old != 0; old = nexto)
+    {
+      nexto = old->next;
+      old->next = new;
+      new = old;
+    }
+
+  vpaths = new;
+
+  /* If there is a VPATH variable with a nonnull value, construct the
+     general VPATH list from it.  We use variable_expand rather than just
+     calling lookup_variable so that it will be recursively expanded.  */
+
+  {
+    /* Turn off --warn-undefined-variables while we expand SHELL and IFS.  */
+    int save = warn_undefined_variables_flag;
+    warn_undefined_variables_flag = 0;
+#ifdef CONFIG_WITH_OPTIMIZATION_HACKS
+    p = variable_expand (strcpy (expr, "$(strip $(VPATH))"));
+#else
+    p = variable_expand ("$(strip $(VPATH))");
+#endif 
+
+    warn_undefined_variables_flag = save;
+  }
+
+  if (*p != '\0')
+    {
+      /* Save the list of vpaths.  */
+      struct vpath *save_vpaths = vpaths;
+      char gp[] = "%";
+
+      /* Empty 'vpaths' so the new one will have no next, and 'vpaths'
+         will still be nil if P contains no existing directories.  */
+      vpaths = 0;
+
+      /* Parse P.  */
+      construct_vpath_list (gp, p);
+
+      /* Store the created path as the general path,
+         and restore the old list of vpaths.  */
+      general_vpath = vpaths;
+      vpaths = save_vpaths;
+    }
+
+  /* If there is a GPATH variable with a nonnull value, construct the
+     GPATH list from it.  We use variable_expand rather than just
+     calling lookup_variable so that it will be recursively expanded.  */
+
+  {
+    /* Turn off --warn-undefined-variables while we expand SHELL and IFS.  */
+    int save = warn_undefined_variables_flag;
+    warn_undefined_variables_flag = 0;
+
+#ifdef CONFIG_WITH_OPTIMIZATION_HACKS
+    p = variable_expand (strcpy (expr, "$(strip $(GPATH))"));
+#else
+    p = variable_expand ("$(strip $(GPATH))");
+#endif 
+
+    warn_undefined_variables_flag = save;
+  }
+
+  if (*p != '\0')
+    {
+      /* Save the list of vpaths.  */
+      struct vpath *save_vpaths = vpaths;
+      char gp[] = "%";
+
+      /* Empty 'vpaths' so the new one will have no next, and 'vpaths'
+         will still be nil if P contains no existing directories.  */
+      vpaths = 0;
+
+      /* Parse P.  */
+      construct_vpath_list (gp, p);
+
+      /* Store the created path as the GPATH,
+         and restore the old list of vpaths.  */
+      gpaths = vpaths;
+      vpaths = save_vpaths;
+    }
+}
+
+/* Construct the VPATH listing for the PATTERN and DIRPATH given.
+
+   This function is called to generate selective VPATH lists and also for
+   the general VPATH list (which is in fact just a selective VPATH that
+   is applied to everything).  The returned pointer is either put in the
+   linked list of all selective VPATH lists or in the GENERAL_VPATH
+   variable.
+
+   If DIRPATH is nil, remove all previous listings with the same
+   pattern.  If PATTERN is nil, remove all VPATH listings.  Existing
+   and readable directories that are not "." given in the DIRPATH
+   separated by the path element separator (defined in makeint.h) are
+   loaded into the directory hash table if they are not there already
+   and put in the VPATH searchpath for the given pattern with trailing
+   slashes stripped off if present (and if the directory is not the
+   root, "/").  The length of the longest entry in the list is put in
+   the structure as well.  The new entry will be at the head of the
+   VPATHS chain.  */
+
+void
+construct_vpath_list (char *pattern, char *dirpath)
+{
+  unsigned int elem;
+  char *p;
+  const char **vpath;
+  unsigned int maxvpath;
+  unsigned int maxelem;
+  const char *percent = NULL;
+
+  if (pattern != 0)
+    percent = find_percent (pattern);
+
+  if (dirpath == 0)
+    {
+      /* Remove matching listings.  */
+      struct vpath *path, *lastpath;
+
+      lastpath = 0;
+      path = vpaths;
+      while (path != 0)
+        {
+          struct vpath *next = path->next;
+
+          if (pattern == 0
+              || (((percent == 0 && path->percent == 0)
+                   || (percent - pattern == path->percent - path->pattern))
+                  && streq (pattern, path->pattern)))
+            {
+              /* Remove it from the linked list.  */
+              if (lastpath == 0)
+                vpaths = path->next;
+              else
+                lastpath->next = next;
+
+              /* Free its unused storage.  */
+              /* MSVC erroneously warns without a cast here.  */
+              free ((void *)path->searchpath);
+              free (path);
+            }
+          else
+            lastpath = path;
+
+          path = next;
+        }
+
+      return;
+    }
+
+#ifdef WINDOWS32
+    convert_vpath_to_windows32 (dirpath, ';');
+#endif
+
+  /* Skip over any initial separators and blanks.  */
+  while (STOP_SET (*dirpath, MAP_BLANK|MAP_PATHSEP))
+    ++dirpath;
+
+  /* Figure out the maximum number of VPATH entries and put it in
+     MAXELEM.  We start with 2, one before the first separator and one
+     nil (the list terminator) and increment our estimated number for
+     each separator or blank we find.  */
+  maxelem = 2;
+  p = dirpath;
+  while (*p != '\0')
+    if (STOP_SET (*p++, MAP_BLANK|MAP_PATHSEP))
+      ++maxelem;
+
+  vpath = xmalloc (maxelem * sizeof (const char *));
+  maxvpath = 0;
+
+  elem = 0;
+  p = dirpath;
+  while (*p != '\0')
+    {
+      char *v;
+      unsigned int len;
+
+      /* Find the end of this entry.  */
+      v = p;
+      while (*p != '\0'
+#if defined(HAVE_DOS_PATHS) && (PATH_SEPARATOR_CHAR == ':')
+             /* Platforms whose PATH_SEPARATOR_CHAR is ':' and which
+                also define HAVE_DOS_PATHS would like us to recognize
+                colons after the drive letter in the likes of
+                "D:/foo/bar:C:/xyzzy".  */
+             && (*p != PATH_SEPARATOR_CHAR
+                 || (p == v + 1 && (p[1] == '/' || p[1] == '\\')))
+#else
+             && *p != PATH_SEPARATOR_CHAR
+#endif
+             && !ISBLANK (*p))
+        ++p;
+
+      len = p - v;
+      /* Make sure there's no trailing slash,
+         but still allow "/" as a directory.  */
+#if defined(__MSDOS__) || defined(__EMX__) || defined(HAVE_DOS_PATHS)
+      /* We need also to leave alone a trailing slash in "d:/".  */
+      if (len > 3 || (len > 1 && v[1] != ':'))
+#endif
+      if (len > 1 && p[-1] == '/')
+        --len;
+
+      /* Put the directory on the vpath list.  */
+      if (len > 1 || *v != '.')
+        {
+          vpath[elem++] = dir_name (strcache_add_len (v, len));
+          if (len > maxvpath)
+            maxvpath = len;
+        }
+
+      /* Skip over separators and blanks between entries.  */
+      while (STOP_SET (*p, MAP_BLANK|MAP_PATHSEP))
+        ++p;
+    }
+
+  if (elem > 0)
+    {
+      struct vpath *path;
+      /* ELEM is now incremented one element past the last
+         entry, to where the nil-pointer terminator goes.
+         Usually this is maxelem - 1.  If not, shrink down.  */
+      if (elem < (maxelem - 1))
+        vpath = xrealloc ((void *)vpath, (elem+1) * sizeof (const char *)); /* bird: Weird cast for msc. */
+
+      /* Put the nil-pointer terminator on the end of the VPATH list.  */
+      vpath[elem] = NULL;
+
+      /* Construct the vpath structure and put it into the linked list.  */
+      path = xmalloc (sizeof (struct vpath));
+      path->searchpath = vpath;
+      path->maxlen = maxvpath;
+      path->next = vpaths;
+      vpaths = path;
+
+      /* Set up the members.  */
+      path->pattern = strcache_add (pattern);
+      path->patlen = strlen (pattern);
+      path->percent = percent ? path->pattern + (percent - pattern) : 0;
+    }
+  else
+    /* There were no entries, so free whatever space we allocated.  */
+    /* MSVC erroneously warns without a cast here.  */
+    free ((void *)vpath);
+}
+
+/* Search the GPATH list for a pathname string that matches the one passed
+   in.  If it is found, return 1.  Otherwise we return 0.  */
+
+int
+gpath_search (const char *file, unsigned int len)
+{
+  if (gpaths && (len <= gpaths->maxlen))
+    {
+      const char **gp;
+      for (gp = gpaths->searchpath; *gp != NULL; ++gp)
+        if (strneq (*gp, file, len) && (*gp)[len] == '\0')
+          return 1;
+    }
+
+  return 0;
+}
+
+
+/* Search the given VPATH list for a directory where the name pointed to by
+   FILE exists.  If it is found, we return a cached name of the existing file
+   and set *MTIME_PTR (if MTIME_PTR is not NULL) to its modtime (or zero if no
+   stat call was done). Also set the matching directory index in PATH_INDEX
+   if it is not NULL. Otherwise we return NULL.  */
+
+static const char *
+selective_vpath_search (struct vpath *path, const char *file,
+                        FILE_TIMESTAMP *mtime_ptr, unsigned int* path_index)
+{
+  int not_target;
+  char *name;
+  const char *n;
+  const char *filename;
+  const char **vpath = path->searchpath;
+  unsigned int maxvpath = path->maxlen;
+  unsigned int i;
+  unsigned int flen, name_dplen;
+  int exists = 0;
+
+  /* Find out if *FILE is a target.
+     If and only if it is NOT a target, we will accept prospective
+     files that don't exist but are mentioned in a makefile.  */
+  {
+    struct file *f = lookup_file (file);
+    not_target = f == 0 || !f->is_target;
+  }
+
+  flen = strlen (file);
+
+  /* Split *FILE into a directory prefix and a name-within-directory.
+     NAME_DPLEN gets the length of the prefix; FILENAME gets the pointer to
+     the name-within-directory and FLEN is its length.  */
+
+  n = strrchr (file, '/');
+#ifdef HAVE_DOS_PATHS
+  /* We need the rightmost slash or backslash.  */
+  {
+    const char *bslash = strrchr (file, '\\');
+    if (!n || bslash > n)
+      n = bslash;
+  }
+#endif
+  name_dplen = n != 0 ? n - file : 0;
+  filename = name_dplen > 0 ? n + 1 : file;
+  if (name_dplen > 0)
+    flen -= name_dplen + 1;
+
+  /* Get enough space for the biggest VPATH entry, a slash, the directory
+     prefix that came with FILE, another slash (although this one may not
+     always be necessary), the filename, and a null terminator.  */
+  name = alloca (maxvpath + 1 + name_dplen + 1 + flen + 1);
+
+  /* Try each VPATH entry.  */
+  for (i = 0; vpath[i] != 0; ++i)
+    {
+      int exists_in_cache = 0;
+      char *p = name;
+      unsigned int vlen = strlen (vpath[i]);
+
+      /* Put the next VPATH entry into NAME at P and increment P past it.  */
+      memcpy (p, vpath[i], vlen);
+      p += vlen;
+
+      /* Add the directory prefix already in *FILE.  */
+      if (name_dplen > 0)
+        {
+#ifndef VMS
+          *p++ = '/';
+#else
+          /* VMS: if this is not in VMS format, treat as Unix format */
+          if ((*p != ':') && (*p != ']') && (*p != '>'))
+            *p++ = '/';
+#endif
+          memcpy (p, file, name_dplen);
+          p += name_dplen;
+        }
+
+#ifdef HAVE_DOS_PATHS
+      /* Cause the next if to treat backslash and slash alike.  */
+      if (p != name && p[-1] == '\\' )
+        p[-1] = '/';
+#endif
+      /* Now add the name-within-directory at the end of NAME.  */
+#ifndef VMS
+      if (p != name && p[-1] != '/')
+        {
+          *p = '/';
+          memcpy (p + 1, filename, flen + 1);
+        }
+      else
+#else
+      /* VMS use a slash if no directory terminator present */
+      if (p != name && p[-1] != '/' && p[-1] != ':' &&
+          p[-1] != '>' && p[-1] != ']')
+        {
+          *p = '/';
+          memcpy (p + 1, filename, flen + 1);
+        }
+      else
+#endif
+        memcpy (p, filename, flen + 1);
+
+      /* Check if the file is mentioned in a makefile.  If *FILE is not
+         a target, that is enough for us to decide this file exists.
+         If *FILE is a target, then the file must be mentioned in the
+         makefile also as a target to be chosen.
+
+         The restriction that *FILE must not be a target for a
+         makefile-mentioned file to be chosen was added by an
+         inadequately commented change in July 1990; I am not sure off
+         hand what problem it fixes.
+
+         In December 1993 I loosened this restriction to allow a file
+         to be chosen if it is mentioned as a target in a makefile.  This
+         seem logical.
+
+         Special handling for -W / -o: make sure we preserve the special
+         values here.  Actually this whole thing is a little bogus: I think
+         we should ditch the name/hname thing and look into the renamed
+         capability that already exists for files: that is, have a new struct
+         file* entry for the VPATH-found file, and set the renamed field if
+         we use it.
+      */
+      {
+        struct file *f = lookup_file (name);
+        if (f != 0)
+          {
+            exists = not_target || f->is_target;
+            if (exists && mtime_ptr
+                && (f->last_mtime == OLD_MTIME || f->last_mtime == NEW_MTIME))
+              {
+                *mtime_ptr = f->last_mtime;
+                mtime_ptr = 0;
+              }
+          }
+      }
+
+      if (!exists)
+        {
+          /* That file wasn't mentioned in the makefile.
+             See if it actually exists.  */
+
+#ifdef VMS
+          /* For VMS syntax just use the original vpath */
+          if (*p != '/')
+            exists_in_cache = exists = dir_file_exists_p (vpath[i], filename);
+          else
+#endif
+            {
+              /* Clobber a null into the name at the last slash.
+                 Now NAME is the name of the directory to look in.  */
+              *p = '\0';
+              /* We know the directory is in the hash table now because either
+                 construct_vpath_list or the code just above put it there.
+                 Does the file we seek exist in it?  */
+              exists_in_cache = exists = dir_file_exists_p (name, filename);
+            }
+        }
+
+      if (exists)
+        {
+          /* The file is in the directory cache.
+             Now check that it actually exists in the filesystem.
+             The cache may be out of date.  When vpath thinks a file
+             exists, but stat fails for it, confusion results in the
+             higher levels.  */
+
+          struct stat st;
+
+#ifndef VMS
+          /* Put the slash back in NAME.  */
+          *p = '/';
+#else
+          /* If the slash was removed, put it back */
+          if (*p == 0)
+            *p = '/';
+#endif
+
+          if (exists_in_cache)  /* Makefile-mentioned file need not exist.  */
+            {
+              int e;
+
+              EINTRLOOP (e, stat (name, &st)); /* Does it really exist?  */
+              if (e != 0)
+                {
+                  exists = 0;
+                  continue;
+                }
+
+              /* Store the modtime into *MTIME_PTR for the caller.  */
+              if (mtime_ptr != 0)
+                {
+                  *mtime_ptr = FILE_TIMESTAMP_STAT_MODTIME (name, st);
+                  mtime_ptr = 0;
+                }
+            }
+
+          /* We have found a file.
+             If we get here and mtime_ptr hasn't been set, record
+             UNKNOWN_MTIME to indicate this.  */
+          if (mtime_ptr != 0)
+            *mtime_ptr = UNKNOWN_MTIME;
+
+          /* Store the name we found and return it.  */
+
+          if (path_index)
+            *path_index = i;
+
+          return strcache_add_len (name, (p + 1 - name) + flen);
+        }
+    }
+
+  return 0;
+}
+
+
+/* Search the VPATH list whose pattern matches FILE for a directory where FILE
+   exists.  If it is found, return the cached name of an existing file, and
+   set *MTIME_PTR (if MTIME_PTR is not NULL) to its modtime (or zero if no
+   stat call was done). Also set the matching directory index in VPATH_INDEX
+   and PATH_INDEX if they are not NULL.  Otherwise we return 0.  */
+
+const char *
+vpath_search (const char *file, FILE_TIMESTAMP *mtime_ptr,
+              unsigned int* vpath_index, unsigned int* path_index)
+{
+  struct vpath *v;
+
+  /* If there are no VPATH entries or FILENAME starts at the root,
+     there is nothing we can do.  */
+
+  if (file[0] == '/'
+#ifdef HAVE_DOS_PATHS
+      || file[0] == '\\' || file[1] == ':'
+#endif
+      || (vpaths == 0 && general_vpath == 0))
+    return 0;
+
+  if (vpath_index)
+    {
+      *vpath_index = 0;
+      *path_index = 0;
+    }
+
+  for (v = vpaths; v != 0; v = v->next)
+    {
+      if (pattern_matches (v->pattern, v->percent, file))
+        {
+          const char *p = selective_vpath_search (
+            v, file, mtime_ptr, path_index);
+          if (p)
+            return p;
+        }
+
+      if (vpath_index)
+        ++*vpath_index;
+    }
+
+
+  if (general_vpath != 0)
+    {
+      const char *p = selective_vpath_search (
+        general_vpath, file, mtime_ptr, path_index);
+      if (p)
+        return p;
+    }
+
+  return 0;
+}
+
+
+
+
+/* Print the data base of VPATH search paths.  */
+
+void
+print_vpath_data_base (void)
+{
+  unsigned int nvpaths;
+  struct vpath *v;
+
+  puts (_("\n# VPATH Search Paths\n"));
+
+  nvpaths = 0;
+  for (v = vpaths; v != 0; v = v->next)
+    {
+      register unsigned int i;
+
+      ++nvpaths;
+
+      printf ("vpath %s ", v->pattern);
+
+      for (i = 0; v->searchpath[i] != 0; ++i)
+        printf ("%s%c", v->searchpath[i],
+                v->searchpath[i + 1] == 0 ? '\n' : PATH_SEPARATOR_CHAR);
+    }
+
+  if (vpaths == 0)
+    puts (_("# No 'vpath' search paths."));
+  else
+    printf (_("\n# %u 'vpath' search paths.\n"), nvpaths);
+
+  if (general_vpath == 0)
+    puts (_("\n# No general ('VPATH' variable) search path."));
+  else
+    {
+      const char **path = general_vpath->searchpath;
+      unsigned int i;
+
+      fputs (_("\n# General ('VPATH' variable) search path:\n# "), stdout);
+
+      for (i = 0; path[i] != 0; ++i)
+        printf ("%s%c", path[i],
+                path[i + 1] == 0 ? '\n' : PATH_SEPARATOR_CHAR);
+    }
+}
diff --git a/src/kmk/w32/Makefile.am b/src/kmk/w32/Makefile.am
new file mode 100644
index 0000000..5527f77
--- /dev/null
+++ b/src/kmk/w32/Makefile.am
@@ -0,0 +1,26 @@
+# Makefile.am to create libw32.a for mingw32 host.
+# Copyright (C) 1997-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+AUTOMAKE_OPTIONS = subdir-objects
+
+noinst_LIBRARIES = libw32.a
+
+libw32_a_SOURCES =  subproc/misc.c subproc/sub_proc.c subproc/w32err.c \
+		    compat/posixfcn.c pathstuff.c w32os.c
+
+libw32_a_CPPFLAGS = -I$(srcdir)/include -I$(srcdir)/subproc -I$(top_srcdir) \
+		    -I$(top_srcdir)/glob
diff --git a/src/kmk/w32/Makefile.kup b/src/kmk/w32/Makefile.kup
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/kmk/w32/Makefile.kup
diff --git a/src/kmk/w32/compat/Makefile.kup b/src/kmk/w32/compat/Makefile.kup
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/kmk/w32/compat/Makefile.kup
diff --git a/src/kmk/w32/compat/dirent.c b/src/kmk/w32/compat/dirent.c
new file mode 100644
index 0000000..9f992ec
--- /dev/null
+++ b/src/kmk/w32/compat/dirent.c
@@ -0,0 +1,212 @@
+/* Directory entry code for Window platforms.
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+#include <config.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#ifdef KMK_PRF
+# include <stdio.h>
+#endif
+#include "dirent.h"
+
+
+DIR*
+opendir(const char* pDirName)
+{
+        struct stat sb;
+        DIR*    pDir;
+        char*   pEndDirName;
+        int     nBufferLen;
+
+        /* sanity checks */
+        if (!pDirName) {
+                errno = EINVAL;
+                return NULL;
+        }
+        if (stat(pDirName, &sb) != 0) {
+                errno = ENOENT;
+                return NULL;
+        }
+        if ((sb.st_mode & S_IFMT) != S_IFDIR) {
+                errno = ENOTDIR;
+                return NULL;
+        }
+
+        /* allocate a DIR structure to return */
+        pDir = (DIR *) malloc(sizeof (DIR));
+
+        if (!pDir)
+                return NULL;
+
+        /* input directory name length */
+        nBufferLen = strlen(pDirName);
+
+        /* copy input directory name to DIR buffer */
+        strcpy(pDir->dir_pDirectoryName, pDirName);
+
+        /* point to end of the copied directory name */
+        pEndDirName = &pDir->dir_pDirectoryName[nBufferLen - 1];
+
+        /* if directory name did not end in '/' or '\', add '/' */
+        if ((*pEndDirName != '/') && (*pEndDirName != '\\')) {
+                pEndDirName++;
+                *pEndDirName = '/';
+        }
+
+        /* now append the wildcard character to the buffer */
+        pEndDirName++;
+        *pEndDirName = '*';
+        pEndDirName++;
+        *pEndDirName = '\0';
+
+        /* other values defaulted */
+        pDir->dir_nNumFiles = 0;
+        pDir->dir_hDirHandle = INVALID_HANDLE_VALUE;
+        pDir->dir_ulCookie = __DIRENT_COOKIE;
+
+#ifdef KMK_PRF
+        fprintf(stderr, "opendir(%s) -> %p\n", pDirName, pDir);
+#endif
+        return pDir;
+}
+
+void
+closedir(DIR *pDir)
+{
+        /* got a valid pointer? */
+        if (!pDir) {
+                errno = EINVAL;
+                return;
+        }
+
+        /* sanity check that this is a DIR pointer */
+        if (pDir->dir_ulCookie != __DIRENT_COOKIE) {
+                errno = EINVAL;
+                return;
+        }
+
+        /* close the WINDOWS32 directory handle */
+        if (pDir->dir_hDirHandle != INVALID_HANDLE_VALUE)
+                FindClose(pDir->dir_hDirHandle);
+
+        free(pDir);
+
+        return;
+}
+
+struct dirent *
+readdir(DIR* pDir)
+{
+        WIN32_FIND_DATA wfdFindData;
+
+        if (!pDir) {
+                errno = EINVAL;
+                return NULL;
+        }
+
+        /* sanity check that this is a DIR pointer */
+        if (pDir->dir_ulCookie != __DIRENT_COOKIE) {
+                errno = EINVAL;
+                return NULL;
+        }
+
+        if (pDir->dir_nNumFiles == 0) {
+                pDir->dir_hDirHandle = FindFirstFile(pDir->dir_pDirectoryName, &wfdFindData);
+                if (pDir->dir_hDirHandle == INVALID_HANDLE_VALUE)
+                        return NULL;
+        } else if (!FindNextFile(pDir->dir_hDirHandle, &wfdFindData))
+                        return NULL;
+
+        /* bump count for next call to readdir() or telldir() */
+        pDir->dir_nNumFiles++;
+
+        /* fill in struct dirent values */
+        pDir->dir_sdReturn.d_ino = (ino_t)-1;
+        strcpy(pDir->dir_sdReturn.d_name, wfdFindData.cFileName);
+
+        return &pDir->dir_sdReturn;
+}
+
+void
+rewinddir(DIR* pDir)
+{
+        if (!pDir) {
+                errno = EINVAL;
+                return;
+        }
+
+        /* sanity check that this is a DIR pointer */
+        if (pDir->dir_ulCookie != __DIRENT_COOKIE) {
+                errno = EINVAL;
+                return;
+        }
+
+        /* close the WINDOWS32 directory handle */
+        if (pDir->dir_hDirHandle != INVALID_HANDLE_VALUE)
+                if (!FindClose(pDir->dir_hDirHandle))
+                        errno = EBADF;
+
+        /* reset members which control readdir() */
+        pDir->dir_hDirHandle = INVALID_HANDLE_VALUE;
+        pDir->dir_nNumFiles = 0;
+
+        return;
+}
+
+int
+telldir(DIR* pDir)
+{
+        if (!pDir) {
+                errno = EINVAL;
+                return -1;
+        }
+
+        /* sanity check that this is a DIR pointer */
+        if (pDir->dir_ulCookie != __DIRENT_COOKIE) {
+                errno = EINVAL;
+                return -1;
+        }
+
+        /* return number of times readdir() called */
+        return pDir->dir_nNumFiles;
+}
+
+void
+seekdir(DIR* pDir, long nPosition)
+{
+        if (!pDir)
+                return;
+
+        /* sanity check that this is a DIR pointer */
+        if (pDir->dir_ulCookie != __DIRENT_COOKIE)
+                return;
+
+        /* go back to beginning of directory */
+        rewinddir(pDir);
+
+        /* loop until we have found position we care about */
+        for (--nPosition; nPosition && readdir(pDir); nPosition--);
+
+        /* flag invalid nPosition value */
+        if (nPosition)
+                errno = EINVAL;
+
+        return;
+}
diff --git a/src/kmk/w32/compat/posixfcn.c b/src/kmk/w32/compat/posixfcn.c
new file mode 100644
index 0000000..a537ca2
--- /dev/null
+++ b/src/kmk/w32/compat/posixfcn.c
@@ -0,0 +1,516 @@
+/* Replacements for Posix functions and Posix functionality for MS-Windows.
+
+Copyright (C) 2013-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <string.h>
+#include <io.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <windows.h>
+
+#include "dlfcn.h"
+
+#include "makeint.h"
+#include "job.h"
+
+#ifndef NO_OUTPUT_SYNC
+/* Support for OUTPUT_SYNC and related functionality.  */
+
+/* Emulation of fcntl that supports only F_GETFD and F_SETLKW.  */
+int
+fcntl (intptr_t fd, int cmd, ...)
+{
+  va_list ap;
+
+  va_start (ap, cmd);
+
+  switch (cmd)
+    {
+      case F_GETFD:
+        va_end (ap);
+        /* Could have used GetHandleInformation, but that isn't
+           supported on Windows 9X.  */
+        if (_get_osfhandle (fd) == -1)
+          return -1;
+        return 0;
+      case F_SETLKW:
+        {
+          void *buf = va_arg (ap, void *);
+          struct flock *fl = (struct flock *)buf;
+          HANDLE hmutex = (HANDLE)fd;
+          static struct flock last_fl;
+          short last_type = last_fl.l_type;
+
+          va_end (ap);
+
+          if (hmutex == INVALID_HANDLE_VALUE || !hmutex)
+            return -1;
+
+          last_fl = *fl;
+
+          switch (fl->l_type)
+            {
+
+              case F_WRLCK:
+                {
+                  DWORD result;
+
+                  if (last_type == F_WRLCK)
+                    {
+                      /* Don't call WaitForSingleObject if we already
+                         own the mutex, because doing so will require
+                         us to call ReleaseMutex an equal number of
+                         times, before the mutex is actually
+                         released.  */
+                      return 0;
+                    }
+
+                  result = WaitForSingleObject (hmutex, INFINITE);
+                  switch (result)
+                    {
+                      case WAIT_OBJECT_0:
+                        /* We don't care if the mutex owner crashed or
+                           exited.  */
+                      case WAIT_ABANDONED:
+                        return 0;
+                      case WAIT_FAILED:
+                      case WAIT_TIMEOUT: /* cannot happen, really */
+                        {
+                          DWORD err = GetLastError ();
+
+                          /* Invalidate the last command.  */
+                          memset (&last_fl, 0, sizeof (last_fl));
+
+                          switch (err)
+                            {
+                              case ERROR_INVALID_HANDLE:
+                              case ERROR_INVALID_FUNCTION:
+                                errno = EINVAL;
+                                return -1;
+                              default:
+                                errno = EDEADLOCK;
+                                return -1;
+                            }
+                        }
+                    }
+                }
+              case F_UNLCK:
+                {
+                  /* FIXME: Perhaps we should call ReleaseMutex
+                     repatedly until it errors out, to make sure the
+                     mutext is released even if we somehow managed to
+                     to take ownership multiple times?  */
+                  BOOL status = ReleaseMutex (hmutex);
+
+                  if (status)
+                    return 0;
+                  else
+                    {
+                      DWORD err = GetLastError ();
+
+                      if (err == ERROR_NOT_OWNER)
+                        errno = EPERM;
+                      else
+                        {
+                          memset (&last_fl, 0, sizeof (last_fl));
+                          errno = EINVAL;
+                        }
+                      return -1;
+                    }
+                }
+              default:
+                errno = ENOSYS;
+                return -1;
+            }
+        }
+      default:
+        errno = ENOSYS;
+        va_end (ap);
+        return -1;
+    }
+}
+
+static intptr_t mutex_handle = -1;
+
+/* Record in a static variable the mutex handle we were requested to
+   use.  That nameless mutex was created by the top-level Make, and
+   its handle was passed to us via inheritance.  The value of that
+   handle is passed via the command-line arguments, so that we know
+   which handle to use.  */
+void
+record_sync_mutex (const char *str)
+{
+#ifdef CONFIG_NEW_WIN_CHILDREN
+  HANDLE hmtx = OpenMutexA(SYNCHRONIZE, FALSE /*fInheritable*/, str);
+  if (hmtx)
+    mutex_handle = (intptr_t)hmtx;
+  else
+    {
+      mutex_handle = -1;
+      errno = ENOENT;
+    }
+#else
+  char *endp;
+  intptr_t hmutex = strtol (str, &endp, 16);
+
+  if (*endp == '\0')
+    mutex_handle = hmutex;
+  else
+    {
+      mutex_handle = -1;
+      errno = EINVAL;
+    }
+#endif
+}
+
+/* Create a new mutex or reuse one created by our parent.  */
+intptr_t
+#ifdef CONFIG_NEW_WIN_CHILDREN
+create_mutex (char *mtxname, size_t size)
+#else
+create_mutex (void)
+#endif
+{
+#ifndef CONFIG_NEW_WIN_CHILDREN
+  SECURITY_ATTRIBUTES secattr;
+#endif
+  intptr_t hmutex = -1;
+
+  /* If we have a mutex handle passed from the parent Make, just use
+     that.  */
+  if (mutex_handle > 0)
+    {
+#ifdef CONFIG_NEW_WIN_CHILDREN
+      mtxname[0] = '\0';
+#endif
+      return mutex_handle;
+    }
+
+#ifdef CONFIG_NEW_WIN_CHILDREN
+  /* We're the top-level Make. Child Make processes will open our mutex, since
+     children does not inherit any handles other than the three standard ones. */
+  snprintf(mtxname, size, "Make-output-%u-%u-%u", GetCurrentProcessId(),
+           GetCurrentThreadId(), GetTickCount());
+  hmutex = (intptr_t)CreateMutexA (NULL, FALSE /*Locked*/, mtxname);
+#else
+  /* We are the top-level Make, and we want the handle to be inherited
+     by our child processes.  */
+  secattr.nLength = sizeof (secattr);
+  secattr.lpSecurityDescriptor = NULL; /* use default security descriptor */
+  secattr.bInheritHandle = TRUE;
+
+  hmutex = (intptr_t)CreateMutex (&secattr, FALSE, NULL);
+#endif
+  if (!hmutex)
+    {
+      DWORD err = GetLastError ();
+
+      fprintf (stderr, "CreateMutex: error %lu\n", err);
+      errno = ENOLCK;
+      hmutex = -1;
+    }
+
+  mutex_handle = hmutex;
+  return hmutex;
+}
+
+/* Return non-zero if F1 and F2 are 2 streams representing the same
+   file or pipe or device.  */
+int
+same_stream (FILE *f1, FILE *f2)
+{
+  HANDLE fh1 = (HANDLE)_get_osfhandle (fileno (f1));
+  HANDLE fh2 = (HANDLE)_get_osfhandle (fileno (f2));
+
+  /* Invalid file descriptors get treated as different streams.  */
+  if (fh1 && fh1 != INVALID_HANDLE_VALUE
+      && fh2 && fh2 != INVALID_HANDLE_VALUE)
+    {
+      if (fh1 == fh2)
+        return 1;
+      else
+        {
+          DWORD ftyp1 = GetFileType (fh1), ftyp2 = GetFileType (fh2);
+
+          if (ftyp1 != ftyp2
+              || ftyp1 == FILE_TYPE_UNKNOWN || ftyp2 == FILE_TYPE_UNKNOWN)
+            return 0;
+          else if (ftyp1 == FILE_TYPE_CHAR)
+            {
+              /* For character devices, check if they both refer to a
+                 console.  This loses if both handles refer to the
+                 null device (FIXME!), but in that case we don't care
+                 in the context of Make.  */
+              DWORD conmode1, conmode2;
+
+              /* Each process on Windows can have at most 1 console,
+                 so if both handles are for the console device, they
+                 are the same.  We also compare the console mode to
+                 distinguish between stdin and stdout/stderr.  */
+              if (GetConsoleMode (fh1, &conmode1)
+                  && GetConsoleMode (fh2, &conmode2)
+                  && conmode1 == conmode2)
+                return 1;
+            }
+          else
+            {
+              /* For disk files and pipes, compare their unique
+                 attributes.  */
+              BY_HANDLE_FILE_INFORMATION bhfi1, bhfi2;
+
+              /* Pipes get zero in the volume serial number, but do
+                 appear to have meaningful information in file index
+                 attributes.  We test file attributes as well, for a
+                 good measure.  */
+              if (GetFileInformationByHandle (fh1, &bhfi1)
+                  && GetFileInformationByHandle (fh2, &bhfi2))
+                return (bhfi1.dwVolumeSerialNumber == bhfi2.dwVolumeSerialNumber
+                        && bhfi1.nFileIndexLow == bhfi2.nFileIndexLow
+                        && bhfi1.nFileIndexHigh == bhfi2.nFileIndexHigh
+                        && bhfi1.dwFileAttributes == bhfi2.dwFileAttributes);
+            }
+        }
+    }
+  return 0;
+}
+
+/* A replacement for tmpfile, since the MSVCRT implementation creates
+   the file in the root directory of the current drive, which might
+   not be writable by our user.  Most of the code borrowed from
+   create_batch_file, see job.c.  */
+FILE *
+tmpfile (void)
+{
+  char temp_path[MAXPATHLEN];
+  unsigned path_size = GetTempPath (sizeof temp_path, temp_path);
+  int path_is_dot = 0;
+  /* The following variable is static so we won't try to reuse a name
+     that was generated a little while ago, because that file might
+     not be on disk yet, since we use FILE_ATTRIBUTE_TEMPORARY below,
+     which tells the OS it doesn't need to flush the cache to disk.
+     If the file is not yet on disk, we might think the name is
+     available, while it really isn't.  This happens in parallel
+     builds, where Make doesn't wait for one job to finish before it
+     launches the next one.  */
+  static unsigned uniq = 0;
+  static int second_loop = 0;
+  const char base[] = "gmake_tmpf";
+  const unsigned sizemax = sizeof base - 1 + 4 + 10 + 10;
+  unsigned pid = GetCurrentProcessId ();
+
+  if (path_size == 0)
+    {
+      path_size = GetCurrentDirectory (sizeof temp_path, temp_path);
+      path_is_dot = 1;
+    }
+
+  ++uniq;
+  if (uniq >= 0x10000 && !second_loop)
+    {
+      /* If we already had 64K batch files in this
+         process, make a second loop through the numbers,
+         looking for free slots, i.e. files that were
+         deleted in the meantime.  */
+      second_loop = 1;
+      uniq = 1;
+    }
+  while (path_size > 0 &&
+         path_size + sizemax < sizeof temp_path &&
+         !(uniq >= 0x10000 && second_loop))
+    {
+      HANDLE h;
+
+      sprintf (temp_path + path_size,
+               "%s%s%u-%x.tmp",
+               temp_path[path_size - 1] == '\\' ? "" : "\\",
+               base, pid, uniq);
+      h = CreateFile (temp_path,  /* file name */
+                      GENERIC_READ | GENERIC_WRITE | DELETE, /* desired access */
+                      FILE_SHARE_READ | FILE_SHARE_WRITE,    /* share mode */
+                      NULL,                                  /* default security attributes */
+                      CREATE_NEW,                            /* creation disposition */
+                      FILE_ATTRIBUTE_NORMAL |                /* flags and attributes */
+                      FILE_ATTRIBUTE_TEMPORARY |
+                      FILE_FLAG_DELETE_ON_CLOSE,
+                      NULL);                                 /* no template file */
+
+      if (h == INVALID_HANDLE_VALUE)
+        {
+          const DWORD er = GetLastError ();
+
+          if (er == ERROR_FILE_EXISTS || er == ERROR_ALREADY_EXISTS)
+            {
+              ++uniq;
+              if (uniq == 0x10000 && !second_loop)
+                {
+                  second_loop = 1;
+                  uniq = 1;
+                }
+            }
+
+          /* The temporary path is not guaranteed to exist, or might
+             not be writable by user.  Use the current directory as
+             fallback.  */
+          else if (path_is_dot == 0)
+            {
+              path_size = GetCurrentDirectory (sizeof temp_path, temp_path);
+              path_is_dot = 1;
+            }
+
+          else
+            {
+              errno = EACCES;
+              break;
+            }
+        }
+      else
+        {
+          int fd = _open_osfhandle ((intptr_t)h, 0);
+
+          return _fdopen (fd, "w+b");
+        }
+    }
+
+  if (uniq >= 0x10000)
+    errno = EEXIST;
+  return NULL;
+}
+
+#endif  /* !NO_OUTPUT_SYNC */
+
+#if MAKE_LOAD
+
+/* Support for dynamic loading of objects.  */
+
+
+static DWORD last_err;
+
+void *
+dlopen (const char *file, int mode)
+{
+  char dllfn[MAX_PATH], *p;
+  HANDLE dllhandle;
+
+  if ((mode & ~(RTLD_LAZY | RTLD_NOW | RTLD_GLOBAL)) != 0)
+    {
+      errno = EINVAL;
+      last_err = ERROR_INVALID_PARAMETER;
+      return NULL;
+    }
+
+  if (!file)
+    dllhandle = GetModuleHandle (NULL);
+  else
+    {
+      /* MSDN says to be sure to use backslashes in the DLL file name.  */
+      strcpy (dllfn, file);
+      for (p = dllfn; *p; p++)
+        if (*p == '/')
+          *p = '\\';
+
+      dllhandle = LoadLibrary (dllfn);
+    }
+  if (!dllhandle)
+    last_err = GetLastError ();
+
+  return dllhandle;
+}
+
+char *
+dlerror (void)
+{
+  static char errbuf[1024];
+  DWORD ret;
+
+  if (!last_err)
+    return NULL;
+
+  ret = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM
+                       | FORMAT_MESSAGE_IGNORE_INSERTS,
+                       NULL, last_err, 0, errbuf, sizeof (errbuf), NULL);
+  while (ret > 0 && (errbuf[ret - 1] == '\n' || errbuf[ret - 1] == '\r'))
+    --ret;
+
+  errbuf[ret] = '\0';
+  if (!ret)
+    sprintf (errbuf, "Error code %lu", last_err);
+
+  last_err = 0;
+  return errbuf;
+}
+
+void *
+dlsym (void *handle, const char *name)
+{
+  FARPROC addr = NULL;
+
+  if (!handle || handle == INVALID_HANDLE_VALUE)
+    {
+      last_err = ERROR_INVALID_PARAMETER;
+      return NULL;
+    }
+
+  addr = GetProcAddress (handle, name);
+  if (!addr)
+    last_err = GetLastError ();
+
+  return (void *)addr;
+}
+
+int
+dlclose (void *handle)
+{
+  if (!handle || handle == INVALID_HANDLE_VALUE)
+    return -1;
+  if (!FreeLibrary (handle))
+    return -1;
+
+  return 0;
+}
+
+
+#endif  /* MAKE_LOAD */
+
+
+/* MS runtime's isatty returns non-zero for any character device,
+   including the null device, which is not what we want.  */
+int
+isatty (int fd)
+{
+  HANDLE fh = (HANDLE) _get_osfhandle (fd);
+  DWORD con_mode;
+
+  if (fh == INVALID_HANDLE_VALUE)
+    {
+      errno = EBADF;
+      return 0;
+    }
+  if (GetConsoleMode (fh, &con_mode))
+    return 1;
+
+  errno = ENOTTY;
+  return 0;
+}
+
+char *
+ttyname (int fd)
+{
+  /* This "knows" that Make only asks about stdout and stderr.  A more
+     sophisticated implementation should test whether FD is open for
+     input or output.  We can do that by looking at the mode returned
+     by GetConsoleMode.  */
+  return "CONOUT$";
+}
diff --git a/src/kmk/w32/imagecache.c b/src/kmk/w32/imagecache.c
new file mode 100644
index 0000000..2b26dac
--- /dev/null
+++ b/src/kmk/w32/imagecache.c
@@ -0,0 +1,219 @@
+/* $Id: imagecache.c 3195 2018-03-27 18:09:23Z bird $ */
+/** @file
+ * kBuild specific executable image cache for Windows.
+ */
+
+/*
+ * Copyright (c) 2012 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/* No GNU coding style here! */
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "makeint.h"
+
+#include <Windows.h>
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct EXECCACHEENTRY
+{
+    /** The name hash value. */
+    unsigned                uHash;
+    /** The name length. */
+    unsigned                cwcName;
+    /** Pointer to the next name with the same hash. */
+    struct EXECCACHEENTRY  *pNext;
+    /** When it was last referenced. */
+    unsigned                uLastRef;
+    /** The module handle, LOAD_LIBRARY_AS_DATAFILE. */
+    HMODULE                 hmod1;
+    /** The module handle, DONT_RESOLVE_DLL_REFERENCES. */
+    HMODULE                 hmod2;
+    /** The executable path. */
+    wchar_t                 wszName[1];
+} EXECCACHEENTRY;
+typedef EXECCACHEENTRY *PEXECCACHEENTRY;
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** Critical section serializing all access. */
+static CRITICAL_SECTION g_CritSect;
+/** Set if initialized. */
+static int volatile     g_fInitialized = 0;
+/** The number of cached images. */
+static unsigned         g_cCached;
+/** Used noting when entries was last used.
+ * Increased on each kmk_cache_exec_image call.  */
+static unsigned         g_uNow;
+
+/** The size of the hash table. */
+#define EXECCACHE_HASHTAB_SIZE  128
+/** The hash table. */
+static PEXECCACHEENTRY  g_apHashTab[EXECCACHE_HASHTAB_SIZE];
+
+
+/** A sleepy approach to do-once. */
+static void kmk_cache_lazy_init(void)
+{
+    if (_InterlockedCompareExchange(&g_fInitialized, -1, 0) == 0)
+    {
+        InitializeCriticalSection(&g_CritSect);
+        _InterlockedExchange(&g_fInitialized, 1);
+    }
+    else
+        while (g_fInitialized != 1)
+            Sleep(1);
+}
+
+
+/* sdbm:
+   This algorithm was created for sdbm (a public-domain reimplementation of
+   ndbm) database library. it was found to do well in scrambling bits,
+   causing better distribution of the keys and fewer splits. it also happens
+   to be a good general hashing function with good distribution. the actual
+   function is hash(i) = hash(i - 1) * 65599 + str[i]; what is included below
+   is the faster version used in gawk. [there is even a faster, duff-device
+   version] the magic constant 65599 was picked out of thin air while
+   experimenting with different constants, and turns out to be a prime.
+   this is one of the algorithms used in berkeley db (see sleepycat) and
+   elsewhere. */
+
+static unsigned execcache_calc_hash(const wchar_t *pwsz, size_t *pcch)
+{
+    wchar_t const  * const pwszStart = pwsz;
+    unsigned               hash = 0;
+    int                    ch;
+
+    while ((ch = *pwsz++) != L'\0')
+        hash = ch + (hash << 6) + (hash << 16) - hash;
+
+    *pcch = (size_t)(pwsz - pwszStart - 1);
+    return hash;
+}
+
+/**
+ * Caches two memory mappings of the specified image so that it isn't flushed
+ * from the kernel's cache mananger.
+ *
+ * Not sure exactly how much this actually helps, but whatever...
+ *
+ * @param   pwszExec    The executable.
+ */
+extern void kmk_cache_exec_image_w(const wchar_t *pwszExec)
+{
+    /*
+     * Prepare name lookup and to lazy init.
+     */
+    size_t              cwcName;
+    const unsigned      uHash = execcache_calc_hash(pwszExec, &cwcName);
+    PEXECCACHEENTRY    *ppCur = &g_apHashTab[uHash % EXECCACHE_HASHTAB_SIZE];
+    PEXECCACHEENTRY     pCur;
+
+    if (g_fInitialized != 1)
+        kmk_cache_lazy_init();
+
+    /*
+     * Do the lookup.
+     */
+    EnterCriticalSection(&g_CritSect);
+    pCur = *ppCur;
+    while (pCur)
+    {
+        if (   pCur->uHash   == uHash
+            && pCur->cwcName == cwcName
+            && !memcmp(pCur->wszName, pwszExec, cwcName * sizeof(wchar_t)))
+        {
+            pCur->uLastRef = ++g_uNow;
+            LeaveCriticalSection(&g_CritSect);
+            return;
+        }
+        ppCur = &pCur->pNext;
+        pCur = pCur->pNext;
+    }
+    LeaveCriticalSection(&g_CritSect);
+
+    /*
+     * Not found, create a new entry.
+     */
+    pCur = xmalloc(sizeof(*pCur) + cwcName * sizeof(wchar_t));
+    pCur->uHash    = uHash;
+    pCur->cwcName  = (unsigned)cwcName;
+    pCur->pNext    = NULL;
+    pCur->uLastRef = ++g_uNow;
+    memcpy(pCur->wszName, pwszExec, (cwcName + 1) * sizeof(wchar_t));
+    pCur->hmod1 = LoadLibraryExW(pwszExec, NULL, LOAD_LIBRARY_AS_DATAFILE);
+    if (pCur->hmod1 != NULL)
+        pCur->hmod2 = LoadLibraryExW(pwszExec, NULL, DONT_RESOLVE_DLL_REFERENCES);
+    else
+        pCur->hmod2 = NULL;
+
+    /*
+     * Insert it.
+     * Take into account that we might've been racing other threads,
+     * fortunately we don't evict anything from the cache.
+     */
+    EnterCriticalSection(&g_CritSect);
+    if (*ppCur != NULL)
+    {
+        /* Find new end of chain and check for duplicate. */
+        PEXECCACHEENTRY pCur2 = *ppCur;
+        while (pCur2)
+        {
+            if (   pCur->uHash   == uHash
+                && pCur->cwcName == cwcName
+                && !memcmp(pCur->wszName, pwszExec, cwcName * sizeof(wchar_t)))
+                break;
+            ppCur = &pCur->pNext;
+            pCur = pCur->pNext;
+        }
+
+    }
+    if (*ppCur == NULL)
+    {
+        *ppCur = pCur;
+        g_cCached++;
+        LeaveCriticalSection(&g_CritSect);
+    }
+    else
+    {
+        LeaveCriticalSection(&g_CritSect);
+
+        if (pCur->hmod1 != NULL)
+            FreeLibrary(pCur->hmod1);
+        if (pCur->hmod2 != NULL)
+            FreeLibrary(pCur->hmod2);
+        free(pCur);
+    }
+}
+
+extern void kmk_cache_exec_image_a(const char *pszExec)
+{
+    wchar_t wszExec[260];
+    int cwc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszExec, strlen(pszExec) + 1, wszExec, 260);
+    if (cwc > 0)
+        kmk_cache_exec_image_w(wszExec);
+}
+
diff --git a/src/kmk/w32/include/dirent.h b/src/kmk/w32/include/dirent.h
new file mode 100644
index 0000000..c349e85
--- /dev/null
+++ b/src/kmk/w32/include/dirent.h
@@ -0,0 +1,66 @@
+/* Windows version of dirent.h
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _DIRENT_H
+#define _DIRENT_H
+
+#ifdef KMK
+# include <windows.h>
+# include "nt/ntdir.h"
+
+#else /* !KMK */
+
+#ifdef __MINGW32__
+# include <windows.h>
+# include_next <dirent.h>
+#else
+
+#include <stdlib.h>
+#include <windows.h>
+#include <limits.h>
+#include <sys/types.h>
+
+#ifndef NAME_MAX
+#define NAME_MAX 255
+#endif
+
+#define __DIRENT_COOKIE 0xfefeabab
+
+
+struct dirent
+{
+  ino_t d_ino;                  /* unused - no equivalent on WINDOWS32 */
+  char d_name[NAME_MAX+1];
+};
+
+typedef struct dir_struct {
+        ULONG   dir_ulCookie;
+        HANDLE  dir_hDirHandle;
+        DWORD   dir_nNumFiles;
+        char    dir_pDirectoryName[NAME_MAX+1];
+        struct dirent dir_sdReturn;
+} DIR;
+
+DIR *opendir(const char *);
+struct dirent *readdir(DIR *);
+void rewinddir(DIR *);
+void closedir(DIR *);
+int telldir(DIR *);
+void seekdir(DIR *, long);
+
+#endif  /* !__MINGW32__ */
+#endif  /* !KMK */
+#endif
diff --git a/src/kmk/w32/include/dlfcn.h b/src/kmk/w32/include/dlfcn.h
new file mode 100644
index 0000000..5a2ae28
--- /dev/null
+++ b/src/kmk/w32/include/dlfcn.h
@@ -0,0 +1,29 @@
+/* dlfcn.h replacement for MS-Windows build.
+Copyright (C) 2013-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef DLFCN_H
+#define DLFCN_H
+
+#define RTLD_LAZY   1
+#define RTLD_NOW    2
+#define RTLD_GLOBAL 4
+
+extern void *dlopen (const char *, int);
+extern void *dlsym (void *, const char *);
+extern char *dlerror (void);
+extern int   dlclose (void *);
+
+#endif  /* DLFCN_H */
diff --git a/src/kmk/w32/include/pathstuff.h b/src/kmk/w32/include/pathstuff.h
new file mode 100644
index 0000000..3f839ec
--- /dev/null
+++ b/src/kmk/w32/include/pathstuff.h
@@ -0,0 +1,30 @@
+/* Definitions for Windows path manipulation.
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _PATHSTUFF_H
+#define _PATHSTUFF_H
+
+char *convert_Path_to_windows32(char *Path, char to_delim);
+char *convert_vpath_to_windows32(char *Path, char to_delim);
+#if 1
+char *unix_slashes(char *filename); /* bird */
+char *unix_slashes_resolved(const char *src, char *dst, unsigned len); /* bird */
+#else
+char *w32ify(const char *filename, int resolve);
+#endif
+char *getcwd_fs(char *buf, int len);
+
+#endif
diff --git a/src/kmk/w32/include/sub_proc.h b/src/kmk/w32/include/sub_proc.h
new file mode 100644
index 0000000..51e3830
--- /dev/null
+++ b/src/kmk/w32/include/sub_proc.h
@@ -0,0 +1,72 @@
+/* Definitions for Windows process invocation.
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef SUB_PROC_H
+#define SUB_PROC_H
+#ifdef CONFIG_NEW_WIN_CHILDREN
+# error "Just checking..."
+#endif
+
+/*
+ * Component Name:
+ *
+ * $Date$
+ *
+ * $Source$
+ *
+ * $Id$
+ */
+
+#define EXTERN_DECL(entry, args) extern entry args
+#define VOID_DECL void
+
+EXTERN_DECL(HANDLE process_init, (VOID_DECL));
+EXTERN_DECL(HANDLE process_init_fd, (HANDLE stdinh, HANDLE stdouth,
+                                     HANDLE stderrh));
+EXTERN_DECL(long process_begin, (HANDLE proc, char **argv, char **envp,
+                                 char *exec_path, char *as_user));
+EXTERN_DECL(long process_pipe_io, (HANDLE proc, char *stdin_data,
+                                   int stdin_data_len));
+#ifndef KMK /* unused */
+EXTERN_DECL(long process_file_io, (HANDLE proc));
+#endif
+EXTERN_DECL(void process_cleanup, (HANDLE proc));
+EXTERN_DECL(HANDLE process_wait_for_any, (int block, DWORD* pdwWaitStatus));
+EXTERN_DECL(void process_register, (HANDLE proc));
+EXTERN_DECL(HANDLE process_easy, (char** argv, char** env,
+                                  int outfd, int errfd));
+EXTERN_DECL(BOOL process_kill, (HANDLE proc, int signal));
+EXTERN_DECL(int process_used_slots, (VOID_DECL));
+EXTERN_DECL(DWORD process_set_handles, (HANDLE *handles));
+
+#ifdef KMK
+EXTERN_DECL(int process_kmk_register_submit, (HANDLE hEvent, intptr_t clue, pid_t *pPid));
+EXTERN_DECL(int process_kmk_register_redirect, (HANDLE hProcess, pid_t *pPid));
+#endif
+
+/* support routines */
+EXTERN_DECL(long process_errno, (HANDLE proc));
+EXTERN_DECL(long process_last_err, (HANDLE proc));
+EXTERN_DECL(long process_exit_code, (HANDLE proc));
+EXTERN_DECL(long process_signal, (HANDLE proc));
+EXTERN_DECL(char * process_outbuf, (HANDLE proc));
+EXTERN_DECL(char * process_errbuf, (HANDLE proc));
+EXTERN_DECL(int process_outcnt, (HANDLE proc));
+EXTERN_DECL(int process_errcnt, (HANDLE proc));
+EXTERN_DECL(void process_pipes, (HANDLE proc, int pipes[3]));
+EXTERN_DECL(void process_noinherit, (int fildes));
+
+#endif
diff --git a/src/kmk/w32/include/w32err.h b/src/kmk/w32/include/w32err.h
new file mode 100644
index 0000000..b4292f2
--- /dev/null
+++ b/src/kmk/w32/include/w32err.h
@@ -0,0 +1,26 @@
+/* Definitions for Windows error handling.
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _W32ERR_H_
+#define _W32ERR_H_
+
+#ifndef EXTERN_DECL
+#define EXTERN_DECL(entry, args) entry args
+#endif
+
+EXTERN_DECL(const char * map_windows32_error_to_string, (DWORD error));
+
+#endif /* !_W32ERR_H */
diff --git a/src/kmk/w32/pathstuff.c b/src/kmk/w32/pathstuff.c
new file mode 100644
index 0000000..f80cbf1
--- /dev/null
+++ b/src/kmk/w32/pathstuff.c
@@ -0,0 +1,321 @@
+/* Path conversion for Windows pathnames.
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include <string.h>
+#include <stdlib.h>
+#include "pathstuff.h"
+#if 1 /* bird */
+# include "nt_fullpath.h"
+# include <assert.h>
+#endif
+
+/*
+ * Convert delimiter separated vpath to Canonical format.
+ */
+char *
+convert_vpath_to_windows32(char *Path, char to_delim)
+{
+    char *etok;            /* token separator for old Path */
+
+        /*
+         * Convert all spaces to delimiters. Note that pathnames which
+         * contain blanks get trounced here. Use 8.3 format as a workaround.
+         */
+        for (etok = Path; etok && *etok; etok++)
+                if (ISBLANK ((unsigned char) *etok))
+                        *etok = to_delim;
+
+        return (convert_Path_to_windows32(Path, to_delim));
+}
+
+/*
+ * Convert delimiter separated path to Canonical format.
+ */
+char *
+convert_Path_to_windows32(char *Path, char to_delim)
+{
+    char *etok;            /* token separator for old Path */
+    char *p;            /* points to element of old Path */
+
+    /* is this a multi-element Path ? */
+    /* FIXME: Perhaps use ":;\"" in strpbrk to convert all quotes to
+       delimiters as well, as a way to handle quoted directories in
+       PATH?  */
+    for (p = Path, etok = strpbrk(p, ":;");
+         etok;
+         etok = strpbrk(p, ":;"))
+        if ((etok - p) == 1) {
+            if (*(etok - 1) == ';' ||
+                *(etok - 1) == ':') {
+                etok[-1] = to_delim;
+                etok[0] = to_delim;
+                p = ++etok;
+                continue;    /* ignore empty bucket */
+            } else if (!isalpha ((unsigned char) *p)) {
+                /* found one to count, handle things like '.' */
+                *etok = to_delim;
+                p = ++etok;
+            } else if ((*etok == ':') && (etok = strpbrk(etok+1, ":;"))) {
+                /* found one to count, handle drive letter */
+                *etok = to_delim;
+                p = ++etok;
+            } else
+                /* all finished, force abort */
+                p += strlen(p);
+        } else if (*p == '"') { /* a quoted directory */
+            for (p++; *p && *p != '"'; p++) /* skip quoted part */
+                ;
+            etok = strpbrk(p, ":;");        /* find next delimiter */
+            if (etok) {
+                *etok = to_delim;
+                p = ++etok;
+            } else
+                p += strlen(p);
+        } else {
+            /* found another one, no drive letter */
+            *etok = to_delim;
+            p = ++etok;
+        }
+
+    return Path;
+}
+
+/*
+ * Convert to forward slashes directly (w32ify(filename, 0)).
+ */
+char *unix_slashes(char *filename) /* bird */
+{
+    char *slash = filename ;
+    while ((slash = strchr(slash, '\\')) != NULL)
+        *slash++ = '/';
+    return filename;
+}
+
+/*
+ * Resolve and convert to forward slashes directly (w32ify(filename, 1)).
+ * Returns if out of buffer space.
+ */
+char *unix_slashes_resolved(const char *src, char *dst, unsigned len)
+{
+    assert(len >= FILENAME_MAX);
+    *dst = '\0'; /** @todo nt_fullpath_cached needs to return some indication of overflow. */
+#if 1
+    nt_fullpath_cached(src, dst, len);
+#else
+    _fullpath(dst, src, len);
+#endif
+
+    return unix_slashes(dst);
+}
+
+#if 0 /* bird: replaced by unix_slashes and unix_slahes_resolved. */
+/*
+ * Convert to forward slashes. Resolve to full pathname optionally
+ */
+char *
+w32ify(const char *filename, int resolve)
+{
+    static char w32_path[FILENAME_MAX];
+#if 1 /* bird */
+
+    if (resolve) {
+        nt_fullpath_cached(filename, w32_path, sizeof(w32_path));
+    } else {
+        w32_path[0] = '\0';
+        strncat(w32_path, filename, sizeof(w32_path));
+    }
+    return unix_slashes(w32_path);
+
+#else   /* !bird */
+    char *p;
+
+    if (resolve) {
+        _fullpath(w32_path, filename, sizeof (w32_path));
+    } else
+        strncpy(w32_path, filename, sizeof (w32_path));
+
+    for (p = w32_path; p && *p; p++)
+        if (*p == '\\')
+            *p = '/';
+
+    return w32_path;
+#endif  /* !bird */
+}
+#endif
+
+char *
+getcwd_fs(char* buf, int len)
+{
+        char *p = getcwd(buf, len);
+
+        if (p) {
+#if 1
+                p = unix_slashes(p);
+#else
+                char *q = w32ify(buf, 0);
+#if 1  /* bird - UPSTREAM? */
+                buf[0] = '\0';
+                strncat(buf, q, len);
+#else  /* !bird */
+                strncpy(buf, q, len);
+#endif
+#endif
+        }
+
+        return p;
+}
+
+#ifdef unused
+/*
+ * Convert delimiter separated pathnames (e.g. PATH) or single file pathname
+ * (e.g. c:/foo, c:\bar) to NutC format. If we are handed a string that
+ * _NutPathToNutc() fails to convert, just return the path we were handed
+ * and assume the caller will know what to do with it (It was probably
+ * a mistake to try and convert it anyway due to some of the bizarre things
+ * that might look like pathnames in makefiles).
+ */
+char *
+convert_path_to_nutc(char *path)
+{
+    int  count;            /* count of path elements */
+    char *nutc_path;     /* new NutC path */
+    int  nutc_path_len;    /* length of buffer to allocate for new path */
+    char *pathp;        /* pointer to nutc_path used to build it */
+    char *etok;            /* token separator for old path */
+    char *p;            /* points to element of old path */
+    char sep;            /* what flavor of separator used in old path */
+    char *rval;
+
+    /* is this a multi-element path ? */
+    for (p = path, etok = strpbrk(p, ":;"), count = 0;
+         etok;
+         etok = strpbrk(p, ":;"))
+        if ((etok - p) == 1) {
+            if (*(etok - 1) == ';' ||
+                *(etok - 1) == ':') {
+                p = ++etok;
+                continue;    /* ignore empty bucket */
+            } else if (etok = strpbrk(etok+1, ":;"))
+                /* found one to count, handle drive letter */
+                p = ++etok, count++;
+            else
+                /* all finished, force abort */
+                p += strlen(p);
+        } else
+            /* found another one, no drive letter */
+            p = ++etok, count++;
+
+    if (count) {
+        count++;    /* x1;x2;x3 <- need to count x3 */
+
+        /*
+         * Hazard a guess on how big the buffer needs to be.
+         * We have to convert things like c:/foo to /c=/foo.
+         */
+        nutc_path_len = strlen(path) + (count*2) + 1;
+        nutc_path = xmalloc(nutc_path_len);
+        pathp = nutc_path;
+        *pathp = '\0';
+
+        /*
+         * Loop through PATH and convert one elemnt of the path at at
+         * a time. Single file pathnames will fail this and fall
+         * to the logic below loop.
+         */
+        for (p = path, etok = strpbrk(p, ":;");
+             etok;
+             etok = strpbrk(p, ":;")) {
+
+            /* don't trip up on device specifiers or empty path slots */
+            if ((etok - p) == 1)
+                if (*(etok - 1) == ';' ||
+                    *(etok - 1) == ':') {
+                    p = ++etok;
+                    continue;
+                } else if ((etok = strpbrk(etok+1, ":;")) == NULL)
+                    break;    /* thing found was a WINDOWS32 pathname */
+
+            /* save separator */
+            sep = *etok;
+
+            /* terminate the current path element -- temporarily */
+            *etok = '\0';
+
+#ifdef __NUTC__
+            /* convert to NutC format */
+            if (_NutPathToNutc(p, pathp, 0) == FALSE) {
+                free(nutc_path);
+                rval = savestring(path, strlen(path));
+                return rval;
+            }
+#else
+            *pathp++ = '/';
+            *pathp++ = p[0];
+            *pathp++ = '=';
+            *pathp++ = '/';
+            strcpy(pathp, &p[2]);
+#endif
+
+            pathp += strlen(pathp);
+            *pathp++ = ':';     /* use Unix style path separtor for new path */
+            *pathp   = '\0'; /* make sure we are null terminaed */
+
+            /* restore path separator */
+            *etok = sep;
+
+            /* point p to first char of next path element */
+            p = ++etok;
+
+        }
+    } else {
+        nutc_path_len = strlen(path) + 3;
+        nutc_path = xmalloc(nutc_path_len);
+        pathp = nutc_path;
+        *pathp = '\0';
+        p = path;
+    }
+
+    /*
+      * OK, here we handle the last element in PATH (e.g. c of a;b;c)
+     * or the path was a single filename and will be converted
+     * here. Note, testing p here assures that we don't trip up
+     * on paths like a;b; which have trailing delimiter followed by
+     * nothing.
+     */
+    if (*p != '\0') {
+#ifdef __NUTC__
+        if (_NutPathToNutc(p, pathp, 0) == FALSE) {
+            free(nutc_path);
+            rval = savestring(path, strlen(path));
+            return rval;
+        }
+#else
+        *pathp++ = '/';
+        *pathp++ = p[0];
+        *pathp++ = '=';
+        *pathp++ = '/';
+        strcpy(pathp, &p[2]);
+#endif
+    } else
+        *(pathp-1) = '\0'; /* we're already done, don't leave trailing : */
+
+    rval = savestring(nutc_path, strlen(nutc_path));
+    free(nutc_path);
+    return rval;
+}
+
+#endif
diff --git a/src/kmk/w32/subproc/Makefile.kup b/src/kmk/w32/subproc/Makefile.kup
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/kmk/w32/subproc/Makefile.kup
diff --git a/src/kmk/w32/subproc/NMakefile b/src/kmk/w32/subproc/NMakefile
new file mode 100644
index 0000000..325e55c
--- /dev/null
+++ b/src/kmk/w32/subproc/NMakefile
@@ -0,0 +1,60 @@
+# NOTE: If you have no 'make' program at all to process this makefile, run
+# 'build.bat' instead.
+#
+# Copyright (C) 1996-2016 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#
+#       NMakefile for GNU Make (subproc library)
+#
+LIB = lib
+CC = cl
+MAKE = nmake
+
+OUTDIR=.
+MAKEFILE=NMakefile
+
+CFLAGS_any = /nologo /MT /W4 /GX /Z7 /YX /D WIN32 /D WINDOWS32 /D _WINDOWS  -I. -I../include -I../../
+CFLAGS_debug = $(CFLAGS_any) /Od /D _DEBUG /FR.\WinDebug\ /Fp.\WinDebug\subproc.pch /Fo.\WinDebug/
+CFLAGS_release = $(CFLAGS_any) /O2 /FR.\WinRel\ /Fp.\WinRel\subproc.pch /Fo.\WinRel/
+
+all: Release Debug
+
+Release:
+	$(MAKE) /f $(MAKEFILE) OUTDIR=WinRel CFLAGS="$(CFLAGS_release)" WinRel/subproc.lib
+Debug:
+	$(MAKE) /f $(MAKEFILE) OUTDIR=WinDebug CFLAGS="$(CFLAGS_debug)" WinDebug/subproc.lib
+
+clean:
+	rmdir /s /q WinRel WinDebug
+	erase *.pdb
+
+$(OUTDIR):
+	if not exist .\$@\nul mkdir .\$@
+
+OBJS = $(OUTDIR)/misc.obj $(OUTDIR)/w32err.obj $(OUTDIR)/sub_proc.obj
+
+$(OUTDIR)/subproc.lib: $(OUTDIR) $(OBJS)
+	$(LIB) -out:$@ @<<
+		$(OBJS)
+<<
+
+.c{$(OUTDIR)}.obj:
+	$(CC) $(CFLAGS) /c $<
+
+$(OUTDIR)/misc.obj: misc.c proc.h
+$(OUTDIR)/sub_proc.obj: sub_proc.c  ../include/sub_proc.h ../include/w32err.h proc.h
+$(OUTDIR)/w32err.obj: w32err.c ../include/w32err.h
diff --git a/src/kmk/w32/subproc/misc.c b/src/kmk/w32/subproc/misc.c
new file mode 100644
index 0000000..8b17413
--- /dev/null
+++ b/src/kmk/w32/subproc/misc.c
@@ -0,0 +1,83 @@
+/* Process handling for Windows
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <windows.h>
+#include "proc.h"
+
+
+/*
+ * Description:  Convert a NULL string terminated UNIX environment block to
+ *              an environment block suitable for a windows32 system call
+ *
+ * Returns:  TRUE= success, FALSE=fail
+ *
+ * Notes/Dependencies:  the environment block is sorted in case-insensitive
+ *      order, is double-null terminated, and is a char *, not a char **
+ */
+int _cdecl compare(const void *a1, const void *a2)
+{
+        return _stricoll(*((char**)a1),*((char**)a2));
+}
+bool_t
+arr2envblk(char **arr, char **envblk_out, int *envsize_needed)
+{
+        char **tmp;
+        int size_needed;
+        int arrcnt;
+        char *ptr;
+
+        arrcnt = 0;
+        while (arr[arrcnt]) {
+                arrcnt++;
+        }
+
+        tmp = (char**) calloc(arrcnt + 1, sizeof(char *));
+        if (!tmp) {
+                return FALSE;
+        }
+
+        arrcnt = 0;
+        size_needed = *envsize_needed = 0;
+        while (arr[arrcnt]) {
+                tmp[arrcnt] = arr[arrcnt];
+                size_needed += strlen(arr[arrcnt]) + 1;
+                arrcnt++;
+        }
+        size_needed++;
+        *envsize_needed = size_needed;
+
+        qsort((void *) tmp, (size_t) arrcnt, sizeof (char*), compare);
+
+        ptr = *envblk_out = calloc(size_needed, 1);
+        if (!ptr) {
+                free(tmp);
+                return FALSE;
+        }
+
+        arrcnt = 0;
+        while (tmp[arrcnt]) {
+                strcpy(ptr, tmp[arrcnt]);
+                ptr += strlen(tmp[arrcnt]) + 1;
+                arrcnt++;
+        }
+
+        free(tmp);
+        return TRUE;
+}
diff --git a/src/kmk/w32/subproc/proc.h b/src/kmk/w32/subproc/proc.h
new file mode 100644
index 0000000..7ccb5ea
--- /dev/null
+++ b/src/kmk/w32/subproc/proc.h
@@ -0,0 +1,29 @@
+/* Definitions for Windows
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef  _PROC_H
+#define _PROC_H
+
+typedef int bool_t;
+
+#define E_SCALL         101
+#define E_IO            102
+#define E_NO_MEM        103
+#define E_FORK          104
+
+extern bool_t arr2envblk(char **arr, char **envblk_out, int *envsize_needed);
+
+#endif
diff --git a/src/kmk/w32/subproc/sub_proc.c b/src/kmk/w32/subproc/sub_proc.c
new file mode 100644
index 0000000..6ccfa47
--- /dev/null
+++ b/src/kmk/w32/subproc/sub_proc.c
@@ -0,0 +1,1714 @@
+/* Process handling for Windows.
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <io.h>         /* for _get_osfhandle */
+#ifdef _MSC_VER
+# include <stddef.h>    /* for intptr_t */
+#else
+# include <stdint.h>
+#endif
+#include <string.h>
+#include <process.h>  /* for msvc _beginthreadex, _endthreadex */
+#include <signal.h>
+#include <windows.h>
+
+#include "makeint.h"
+#include "filedef.h"
+#include "variable.h"
+#include "sub_proc.h"
+#include "proc.h"
+#include "w32err.h"
+#include "debug.h"
+
+#ifdef KMK
+# include <assert.h>
+# include "kmkbuiltin.h"
+extern void kmk_cache_exec_image_a(const char *); /* imagecache.c */
+#endif
+
+static char *make_command_line(char *shell_name, char *exec_path, char **argv);
+
+typedef struct sub_process_t {
+#ifdef KMK
+        enum { kRegular = 0, kSubmit, kSubProcFreed } enmType;
+        intptr_t clue;
+#endif
+        intptr_t sv_stdin[2];
+        intptr_t sv_stdout[2];
+        intptr_t sv_stderr[2];
+        int using_pipes;
+        char *inp;
+        DWORD incnt;
+        char * volatile outp;
+        volatile DWORD outcnt;
+        char * volatile errp;
+        volatile DWORD errcnt;
+        pid_t pid;
+        int exit_code;
+        int signal;
+        long last_err;
+        long lerrno;
+} sub_process;
+
+static long process_file_io_private(sub_process *pproc, BOOL fNeedToWait); /* bird */
+
+/* keep track of children so we can implement a waitpid-like routine */
+static sub_process *proc_array[MAXIMUM_WAIT_OBJECTS];
+static int proc_index = 0;
+static int fake_exits_pending = 0;
+
+
+/*
+ * Fill a HANDLE list with handles to wait for.
+ */
+DWORD
+process_set_handles(HANDLE *handles)
+{
+    DWORD count = 0;
+    int i;
+
+    /* Build array of handles to wait for */
+    for (i = 0; i < proc_index; i++) {
+        /* Don't wait on child processes that have already finished */
+        if (fake_exits_pending && proc_array[i]->exit_code)
+            continue;
+
+        handles[count++] = (HANDLE) proc_array[i]->pid;
+    }
+
+    return count;
+}
+
+#ifndef KMK /* Inefficient! */
+/*
+ * When a process has been waited for, adjust the wait state
+ * array so that we don't wait for it again
+ */
+static void
+process_adjust_wait_state(sub_process* pproc)
+{
+        int i;
+
+        if (!proc_index)
+                return;
+
+        for (i = 0; i < proc_index; i++)
+                if (proc_array[i]->pid == pproc->pid)
+                        break;
+
+        if (i < proc_index) {
+                proc_index--;
+                if (i != proc_index)
+                        memmove(&proc_array[i], &proc_array[i+1],
+                                (proc_index-i) * sizeof(sub_process*));
+                proc_array[proc_index] = NULL;
+        }
+}
+
+#endif /* !KMK */
+
+/*
+ * Waits for any of the registered child processes to finish.
+ */
+static sub_process *
+process_wait_for_any_private(int block, DWORD* pdwWaitStatus)
+{
+        HANDLE handles[MAXIMUM_WAIT_OBJECTS];
+        DWORD retval, which;
+        int i;
+
+        if (!proc_index)
+                return NULL;
+
+        /* build array of handles to wait for */
+        for (i = 0; i < proc_index; i++) {
+                handles[i] = (HANDLE) proc_array[i]->pid;
+
+                if (fake_exits_pending && proc_array[i]->exit_code)
+                        break;
+        }
+
+        /* wait for someone to exit */
+        if (!fake_exits_pending) {
+#ifdef KMK
+l_wait_again:
+#endif
+                retval = WaitForMultipleObjects(proc_index, handles, FALSE, (block ? INFINITE : 0));
+                which = retval - WAIT_OBJECT_0;
+        } else {
+                fake_exits_pending--;
+                retval = !WAIT_FAILED;
+                which = i;
+        }
+
+        /* If the pointer is not NULL, set the wait status result variable. */
+        if (pdwWaitStatus)
+            *pdwWaitStatus = retval;
+
+        /* return pointer to process */
+        if ((retval == WAIT_TIMEOUT) || (retval == WAIT_FAILED)) {
+                return NULL;
+        }
+        else {
+                sub_process* pproc = proc_array[which];
+#ifdef KMK
+                if (pproc->enmType == kSubmit) {
+                        /* Try get the result from kSubmit.c.  This may not succeed if the whole
+                           result hasn't arrived yet, in which we just restart the wait. */
+                        if (kSubmitSubProcGetResult(pproc->clue, &pproc->exit_code, &pproc->signal) != 0) {
+                                goto l_wait_again;
+                        }
+                }
+#endif
+#ifndef KMK /* Inefficient! */
+                process_adjust_wait_state(pproc);
+#else
+                proc_index--;
+                if ((int)which < proc_index)
+                        proc_array[which] = proc_array[proc_index];
+                proc_array[proc_index] = NULL;
+#endif
+                return pproc;
+        }
+}
+
+/*
+ * Terminate a process.
+ */
+BOOL
+ process_kill(HANDLE proc, int signal)
+{
+        sub_process* pproc = (sub_process*) proc;
+#ifdef KMK
+    if (pproc->enmType == kRegular) {
+#endif
+        pproc->signal = signal;
+        return (TerminateProcess((HANDLE) pproc->pid, signal));
+#ifdef KMK
+    } else if (pproc->enmType == kSubmit)
+        return kSubmitSubProcKill(pproc->clue, signal) == 0;
+    assert(0);
+    return FALSE;
+#endif
+}
+
+/*
+ * Use this function to register processes you wish to wait for by
+ * calling process_file_io(NULL) or process_wait_any(). This must be done
+ * because it is possible for callers of this library to reuse the same
+ * handle for multiple processes launches :-(
+ */
+void
+process_register(HANDLE proc)
+{
+#ifdef KMK
+        assert(((sub_process *)proc)->enmType == kRegular);
+#endif
+        if (proc_index < MAXIMUM_WAIT_OBJECTS)
+                proc_array[proc_index++] = (sub_process *) proc;
+}
+
+#ifdef KMK
+
+/**
+ * Interface used by kmkbuiltin/kSubmit.c to register stuff going down in a
+ * worker process.
+ *
+ * @returns 0 on success, -1 if there are too many sub-processes already.
+ * @param   hEvent              The event semaphore to wait on.
+ * @param   clue                The clue to base.
+ * @param   pPid                Where to return the pid that job.c expects.
+ */
+int
+process_kmk_register_submit(HANDLE hEvent, intptr_t clue, pid_t *pPid)
+{
+	if (proc_index < MAXIMUM_WAIT_OBJECTS) {
+		sub_process *pSubProc = (sub_process *)xcalloc(sizeof(*pSubProc));
+		pSubProc->enmType = kSubmit;
+		pSubProc->clue    = clue;
+		pSubProc->pid     = (intptr_t)hEvent;
+
+		proc_array[proc_index++] = pSubProc;
+		*pPid = (intptr_t)pSubProc;
+		return 0;
+	}
+	return -1;
+}
+
+/**
+ * Interface used by kmkbuiltin/kRedirect.c to register a spawned process.
+ *
+ * @returns 0 on success, -1 if there are too many sub-processes already.
+ * @param   hProcess            The process handle.
+ * @param   pPid                Where to return the pid that job.c expects.
+ */
+int
+process_kmk_register_redirect(HANDLE hProcess, pid_t *pPid)
+{
+	if (proc_index < MAXIMUM_WAIT_OBJECTS) {
+		sub_process *pSubProc = (sub_process *)xcalloc(sizeof(*pSubProc));
+		pSubProc->enmType = kRegular;
+		pSubProc->pid     = (intptr_t)hProcess;
+
+		proc_array[proc_index++] = pSubProc;
+		*pPid = (intptr_t)pSubProc;
+		return 0;
+	}
+	return -1;
+}
+
+#endif /* KMK */
+
+/*
+ * Return the number of processes that we are still waiting for.
+ */
+int
+process_used_slots(void)
+{
+        return proc_index;
+}
+
+/*
+ * Public function which works kind of like waitpid(). Wait for any
+ * of the children to die and return results. To call this function,
+ * you must do 1 of things:
+ *
+ *      x = process_easy(...);
+ *
+ * or
+ *
+ *      x = process_init_fd();
+ *      process_register(x);
+ *
+ * or
+ *
+ *      x = process_init();
+ *      process_register(x);
+ *
+ * You must NOT then call process_pipe_io() because this function is
+ * not capable of handling automatic notification of any child
+ * death.
+ */
+
+HANDLE
+process_wait_for_any(int block, DWORD* pdwWaitStatus)
+{
+        sub_process* pproc = process_wait_for_any_private(block, pdwWaitStatus);
+
+        if (!pproc)
+                return NULL;
+        else {
+                /*
+                 * Ouch! can't tell caller if this fails directly. Caller
+                 * will have to use process_last_err()
+                 */
+#ifdef KMK
+                /* Invalidate negative directory cache entries now that a
+                   job has completed and possibly created new files that
+                   was missing earlier. */
+                dir_cache_invalid_after_job ();
+
+                if (pproc->enmType == kRegular) {
+                        (void)process_file_io_private(pproc, FALSE);
+                }
+#else
+                (void) process_file_io(pproc);
+#endif
+                return ((HANDLE) pproc);
+        }
+}
+
+long
+process_signal(HANDLE proc)
+{
+        if (proc == INVALID_HANDLE_VALUE) return 0;
+        return (((sub_process *)proc)->signal);
+}
+
+long
+process_last_err(HANDLE proc)
+{
+        if (proc == INVALID_HANDLE_VALUE) return ERROR_INVALID_HANDLE;
+        return (((sub_process *)proc)->last_err);
+}
+
+long
+process_exit_code(HANDLE proc)
+{
+        if (proc == INVALID_HANDLE_VALUE) return EXIT_FAILURE;
+        return (((sub_process *)proc)->exit_code);
+}
+
+void
+process_noinherit(int fd)
+{
+  HANDLE fh = (HANDLE)_get_osfhandle(fd);
+
+  if (fh && fh != INVALID_HANDLE_VALUE)
+        SetHandleInformation(fh, HANDLE_FLAG_INHERIT, 0);
+}
+
+/*
+2006-02:
+All the following functions are currently unused.
+All of them would crash gmake if called with argument INVALID_HANDLE_VALUE.
+Hence whoever wants to use one of this functions must invent and implement
+a reasonable error handling for this function.
+
+char *
+process_outbuf(HANDLE proc)
+{
+        return (((sub_process *)proc)->outp);
+}
+
+char *
+process_errbuf(HANDLE proc)
+{
+        return (((sub_process *)proc)->errp);
+}
+
+int
+process_outcnt(HANDLE proc)
+{
+        return (((sub_process *)proc)->outcnt);
+}
+
+int
+process_errcnt(HANDLE proc)
+{
+        return (((sub_process *)proc)->errcnt);
+}
+
+void
+process_pipes(HANDLE proc, int pipes[3])
+{
+        pipes[0] = ((sub_process *)proc)->sv_stdin[0];
+        pipes[1] = ((sub_process *)proc)->sv_stdout[0];
+        pipes[2] = ((sub_process *)proc)->sv_stderr[0];
+        return;
+}
+*/
+
+        HANDLE
+process_init()
+{
+        sub_process *pproc;
+        /*
+         * open file descriptors for attaching stdin/stdout/sterr
+         */
+        HANDLE stdin_pipes[2];
+        HANDLE stdout_pipes[2];
+        HANDLE stderr_pipes[2];
+        SECURITY_ATTRIBUTES inherit;
+        BYTE sd[SECURITY_DESCRIPTOR_MIN_LENGTH];
+
+        pproc = malloc(sizeof(*pproc));
+        memset(pproc, 0, sizeof(*pproc));
+
+        /* We can't use NULL for lpSecurityDescriptor because that
+           uses the default security descriptor of the calling process.
+           Instead we use a security descriptor with no DACL.  This
+           allows nonrestricted access to the associated objects. */
+
+        if (!InitializeSecurityDescriptor((PSECURITY_DESCRIPTOR)(&sd),
+                                          SECURITY_DESCRIPTOR_REVISION)) {
+                pproc->last_err = GetLastError();
+                pproc->lerrno = E_SCALL;
+                return((HANDLE)pproc);
+        }
+
+        inherit.nLength = sizeof(inherit);
+        inherit.lpSecurityDescriptor = (PSECURITY_DESCRIPTOR)(&sd);
+        inherit.bInheritHandle = TRUE;
+
+        // By convention, parent gets pipe[0], and child gets pipe[1]
+        // This means the READ side of stdin pipe goes into pipe[1]
+        // and the WRITE side of the stdout and stderr pipes go into pipe[1]
+        if (CreatePipe( &stdin_pipes[1], &stdin_pipes[0], &inherit, 0) == FALSE ||
+        CreatePipe( &stdout_pipes[0], &stdout_pipes[1], &inherit, 0) == FALSE ||
+        CreatePipe( &stderr_pipes[0], &stderr_pipes[1], &inherit, 0) == FALSE) {
+
+                pproc->last_err = GetLastError();
+                pproc->lerrno = E_SCALL;
+                return((HANDLE)pproc);
+        }
+
+        //
+        // Mark the parent sides of the pipes as non-inheritable
+        //
+        if (SetHandleInformation(stdin_pipes[0],
+                                HANDLE_FLAG_INHERIT, 0) == FALSE ||
+                SetHandleInformation(stdout_pipes[0],
+                                HANDLE_FLAG_INHERIT, 0) == FALSE ||
+                SetHandleInformation(stderr_pipes[0],
+                                HANDLE_FLAG_INHERIT, 0) == FALSE) {
+
+                pproc->last_err = GetLastError();
+                pproc->lerrno = E_SCALL;
+                return((HANDLE)pproc);
+        }
+        pproc->sv_stdin[0]  = (intptr_t) stdin_pipes[0];
+        pproc->sv_stdin[1]  = (intptr_t) stdin_pipes[1];
+        pproc->sv_stdout[0] = (intptr_t) stdout_pipes[0];
+        pproc->sv_stdout[1] = (intptr_t) stdout_pipes[1];
+        pproc->sv_stderr[0] = (intptr_t) stderr_pipes[0];
+        pproc->sv_stderr[1] = (intptr_t) stderr_pipes[1];
+
+        pproc->using_pipes = 1;
+
+        pproc->lerrno = 0;
+
+        return((HANDLE)pproc);
+}
+
+
+        HANDLE
+process_init_fd(HANDLE stdinh, HANDLE stdouth, HANDLE stderrh)
+{
+        sub_process *pproc;
+
+        pproc = malloc(sizeof(*pproc));
+        if (pproc) {
+                memset(pproc, 0, sizeof(*pproc));
+
+                /*
+                 * Just pass the provided file handles to the 'child
+                 * side' of the pipe, bypassing pipes altogether.
+                 */
+                pproc->sv_stdin[1]  = (intptr_t) stdinh;
+                pproc->sv_stdout[1] = (intptr_t) stdouth;
+                pproc->sv_stderr[1] = (intptr_t) stderrh;
+
+                pproc->last_err = pproc->lerrno = 0;
+        }
+
+        return((HANDLE)pproc);
+}
+
+
+static HANDLE
+find_file(const char *exec_path, const char *path_var,
+          char *full_fname, DWORD full_len)
+{
+        HANDLE exec_handle;
+        char *fname;
+        char *ext;
+        DWORD req_len;
+        int i;
+        static const char *extensions[] =
+          /* Should .com come before no-extension case?  */
+          { ".exe", ".cmd", ".bat", "", ".com", NULL };
+
+        fname = xmalloc(strlen(exec_path) + 5);
+        strcpy(fname, exec_path);
+        ext = fname + strlen(fname);
+
+        for (i = 0; extensions[i]; i++) {
+                strcpy(ext, extensions[i]);
+                if (((req_len = SearchPath (path_var, fname, NULL, full_len,
+                                            full_fname, NULL)) > 0
+                     /* For compatibility with previous code, which
+                        used OpenFile, and with Windows operation in
+                        general, also look in various default
+                        locations, such as Windows directory and
+                        Windows System directory.  Warning: this also
+                        searches PATH in the Make's environment, which
+                        might not be what the Makefile wants, but it
+                        seems to be OK as a fallback, after the
+                        previous SearchPath failed to find on child's
+                        PATH.  */
+                     || (req_len = SearchPath (NULL, fname, NULL, full_len,
+                                               full_fname, NULL)) > 0)
+                    && req_len <= full_len
+                    && (exec_handle =
+                                CreateFile(full_fname,
+                                           GENERIC_READ,
+                                           FILE_SHARE_READ | FILE_SHARE_WRITE,
+                                           NULL,
+                                           OPEN_EXISTING,
+                                           FILE_ATTRIBUTE_NORMAL,
+                                           NULL)) != INVALID_HANDLE_VALUE) {
+                        free(fname);
+                        return(exec_handle);
+                }
+        }
+
+        free(fname);
+        return INVALID_HANDLE_VALUE;
+}
+
+/*
+ * Return non-zero of FNAME specifies a batch file and its name
+ * includes embedded whitespace.
+ */
+
+static int
+batch_file_with_spaces(const char *fname)
+{
+        size_t fnlen = strlen(fname);
+
+        return (fnlen > 4
+                && (_strnicmp(fname + fnlen - 4, ".bat", 4) == 0
+                    || _strnicmp(fname + fnlen - 4, ".cmd", 4) == 0)
+                /* The set of characters in the 2nd arg to strpbrk
+                   should be the same one used by make_command_line
+                   below to decide whether an argv[] element needs
+                   quoting.  */
+                && strpbrk(fname, " \t") != NULL);
+}
+
+
+/*
+ * Description:   Create the child process to be helped
+ *
+ * Returns: success <=> 0
+ *
+ * Notes/Dependencies:
+ */
+long
+process_begin(
+        HANDLE proc,
+        char **argv,
+        char **envp,
+        char *exec_path,
+        char *as_user)
+{
+        sub_process *pproc = (sub_process *)proc;
+        char *shell_name = 0;
+        int file_not_found=0;
+        HANDLE exec_handle;
+        char exec_fname[MAX_PATH];
+        const char *path_var = NULL;
+        char **ep;
+        char buf[MAX_PATH];
+        DWORD bytes_returned;
+        DWORD flags;
+        char *command_line;
+        STARTUPINFO startInfo;
+        PROCESS_INFORMATION procInfo;
+        char *envblk=NULL;
+        int envsize_needed = 0;
+        int pass_null_exec_path = 0;
+#ifdef KMK
+        size_t exec_path_len;
+	extern int process_priority;
+
+	assert (pproc->enmType == kRegular);
+#endif
+
+        /*
+         *  Shell script detection...  if the exec_path starts with #! then
+         *  we want to exec shell-script-name exec-path, not just exec-path
+         *  NT doesn't recognize #!/bin/sh or #!/etc/Tivoli/bin/perl.  We do not
+         *  hard-code the path to the shell or perl or whatever:  Instead, we
+         *  assume it's in the path somewhere (generally, the NT tools
+         *  bin directory)
+         */
+
+#ifdef KMK
+        /* kmk performance: Don't bother looking for shell scripts in .exe files. */
+        exec_path_len = strlen(exec_path);
+        if (exec_path_len > 4
+            && exec_path[exec_path_len - 4] == '.'
+            && !stricmp(exec_path + exec_path_len - 3, "exe")) {
+                exec_handle =  INVALID_HANDLE_VALUE;
+		exec_fname[0] = '\0';
+        }
+        else {
+#endif /* KMK */
+
+        /* Use the Makefile's value of PATH to look for the program to
+           execute, because it could be different from Make's PATH
+           (e.g., if the target sets its own value.  */
+        if (envp)
+                for (ep = envp; *ep; ep++) {
+                        if (strncmp (*ep, "PATH=", 5) == 0
+                            || strncmp (*ep, "Path=", 5) == 0) {
+                                path_var = *ep + 5;
+                                break;
+                        }
+                }
+        exec_handle = find_file(exec_path, path_var,
+                                exec_fname, sizeof(exec_fname));
+#ifdef KMK
+        }
+#endif
+
+        /*
+         * If we couldn't open the file, just assume that Windows will be
+         * somehow able to find and execute it.  If the first character
+         * of the command is '/', assume they set SHELL to a Unixy shell
+         * that have some magic mounts known only to it, and run the whole
+         * command via $SHELL -c "COMMAND" instead.
+         */
+        if (exec_handle == INVALID_HANDLE_VALUE) {
+                if (exec_path[0] == '/') {
+                        char *new_argv0;
+                        char **argvi = argv;
+                        int arglen = 0;
+
+                        strcpy(buf, variable_expand ("$(SHELL)"));
+                        shell_name = &buf[0];
+                        strcpy(exec_fname, "-c");
+                        /* Construct a single command string in argv[0].  */
+                        while (*argvi) {
+                                arglen += strlen(*argvi) + 1;
+                                argvi++;
+                        }
+                        new_argv0 = xmalloc(arglen + 1);
+                        new_argv0[0] = '\0';
+                        for (argvi = argv; *argvi; argvi++) {
+                                strcat(new_argv0, *argvi);
+                                strcat(new_argv0, " ");
+                        }
+                        /* Remove the extra blank at the end.  */
+                        new_argv0[arglen-1] = '\0';
+                        free(argv[0]);
+                        argv[0] = new_argv0;
+                        argv[1] = NULL;
+                }
+                else
+                        file_not_found++;
+        }
+        else {
+                /* Attempt to read the first line of the file */
+                if (ReadFile( exec_handle,
+                                buf, sizeof(buf) - 1, /* leave room for trailing NULL */
+                                &bytes_returned, 0) == FALSE || bytes_returned < 2) {
+
+                        pproc->last_err = GetLastError();
+                        pproc->lerrno = E_IO;
+                        CloseHandle(exec_handle);
+                        return(-1);
+                }
+                if (buf[0] == '#' && buf[1] == '!') {
+                        /*
+                         *  This is a shell script...  Change the command line from
+                         *      exec_path args to shell_name exec_path args
+                         */
+                        char *p;
+
+                        /*  Make sure buf is NULL terminated */
+                        buf[bytes_returned] = 0;
+                        /*
+                         * Depending on the file system type, etc. the first line
+                         * of the shell script may end with newline or newline-carriage-return
+                         * Whatever it ends with, cut it off.
+                         */
+                        p= strchr(buf, '\n');
+                        if (p)
+                                *p = 0;
+                        p = strchr(buf, '\r');
+                        if (p)
+                                *p = 0;
+
+                        /*
+                         *  Find base name of shell
+                         */
+                        shell_name = strrchr( buf, '/');
+                        if (shell_name) {
+                                shell_name++;
+                        } else {
+                                shell_name = &buf[2];/* skipping "#!" */
+                        }
+
+                }
+                CloseHandle(exec_handle);
+        }
+
+        flags = 0;
+
+        if (file_not_found)
+                command_line = make_command_line( shell_name, exec_path, argv);
+        else {
+                /* If exec_fname includes whitespace, CreateProcess
+                   behaves erratically and unreliably, and often fails
+                   if argv[0] also includes whitespace (and thus will
+                   be quoted by make_command_line below).  So in that
+                   case, we don't pass exec_fname as the 1st arg to
+                   CreateProcess, but instead replace argv[0] with
+                   exec_fname (to keep its leading directories and
+                   extension as found by find_file), and pass NULL to
+                   CreateProcess as its 1st arg.  This works around
+                   the bugs in CreateProcess, which are probably
+                   caused by its passing the command to cmd.exe with
+                   some incorrect quoting.  */
+                if (!shell_name
+                    && batch_file_with_spaces(exec_fname)
+                    && _stricmp(exec_path, argv[0]) == 0) {
+                        char *new_argv, *p;
+                        char **argvi;
+                        int arglen, i;
+                        pass_null_exec_path = 1;
+                        /* Rewrite argv[] replacing argv[0] with exec_fname.  */
+                        for (argvi = argv + 1, arglen = strlen(exec_fname) + 1;
+                             *argvi;
+                             argvi++) {
+                                arglen += strlen(*argvi) + 1;
+                        }
+                        new_argv = xmalloc(arglen);
+                        p = strcpy(new_argv, exec_fname) + strlen(exec_fname) + 1;
+                        for (argvi = argv + 1, i = 1; *argvi; argvi++, i++) {
+                                strcpy(p, *argvi);
+                                argv[i] = p;
+                                p += strlen(*argvi) + 1;
+                        }
+                        argv[i] = NULL;
+                        free (argv[0]);
+                        argv[0] = new_argv;
+                }
+                command_line = make_command_line( shell_name, exec_fname, argv);
+        }
+
+        if ( command_line == NULL ) {
+                pproc->last_err = 0;
+                pproc->lerrno = E_NO_MEM;
+                return(-1);
+        }
+
+        if (envp) {
+                if (arr2envblk(envp, &envblk, &envsize_needed) == FALSE) {
+                        pproc->lerrno = E_NO_MEM;
+                        free( command_line );
+                        if ((pproc->last_err == ERROR_INVALID_PARAMETER
+                             || pproc->last_err == ERROR_MORE_DATA)
+                            && envsize_needed > 32*1024) {
+                                fprintf (stderr, "CreateProcess failed, probably because environment is too large (%d bytes).\n",
+                                         envsize_needed);
+                        }
+                        pproc->last_err = 0;
+                        return(-1);
+                }
+        }
+
+        if (shell_name || file_not_found || pass_null_exec_path) {
+                exec_path = 0;  /* Search for the program in %Path% */
+        } else {
+                exec_path = exec_fname;
+        }
+
+        /*
+         *  Set up inherited stdin, stdout, stderr for child
+         */
+        memset(&startInfo, '\0', sizeof(startInfo));
+        GetStartupInfo(&startInfo);
+#ifndef KMK
+        startInfo.dwFlags = STARTF_USESTDHANDLES;
+#endif
+        startInfo.lpReserved = 0;
+        startInfo.cbReserved2 = 0;
+        startInfo.lpReserved2 = 0;
+#ifndef KMK
+        startInfo.hStdInput = (HANDLE)pproc->sv_stdin[1];
+        startInfo.hStdOutput = (HANDLE)pproc->sv_stdout[1];
+        startInfo.hStdError = (HANDLE)pproc->sv_stderr[1];
+#else
+        if (   ((HANDLE)pproc->sv_stdin[1]  != INVALID_HANDLE_VALUE && pproc->sv_stdin[1])
+            || ((HANDLE)pproc->sv_stdout[1] != INVALID_HANDLE_VALUE && pproc->sv_stdout[1])
+            || ((HANDLE)pproc->sv_stderr[1] != INVALID_HANDLE_VALUE && pproc->sv_stderr[1]) ) {
+                startInfo.dwFlags = STARTF_USESTDHANDLES;
+                startInfo.hStdInput = (HANDLE)pproc->sv_stdin[1];
+                startInfo.hStdOutput = (HANDLE)pproc->sv_stdout[1];
+                startInfo.hStdError = (HANDLE)pproc->sv_stderr[1];
+        } else {
+                startInfo.dwFlags = 0;
+                startInfo.hStdInput = 0;
+                startInfo.hStdOutput = 0;
+                startInfo.hStdError = 0;
+        }
+#endif
+
+        if (as_user) {
+                free(envblk);
+                return -1;
+        } else {
+                DB (DB_JOBS, ("CreateProcess(%s,%s,...)\n",
+                        exec_path ? exec_path : "NULL",
+                        command_line ? command_line : "NULL"));
+#ifdef KMK
+		if (exec_fname[0])
+			kmk_cache_exec_image_a(exec_fname);
+		else if (exec_path)
+			kmk_cache_exec_image_a(exec_path);
+		else if (argv[0])
+			kmk_cache_exec_image_a(argv[0]);
+
+		switch (process_priority) {
+		case 1: flags |= CREATE_SUSPENDED | IDLE_PRIORITY_CLASS; break;
+		case 2: flags |= CREATE_SUSPENDED | BELOW_NORMAL_PRIORITY_CLASS; break;
+		case 3: flags |= CREATE_SUSPENDED | NORMAL_PRIORITY_CLASS; break;
+		case 4: flags |= CREATE_SUSPENDED | HIGH_PRIORITY_CLASS; break;
+		case 5: flags |= CREATE_SUSPENDED | REALTIME_PRIORITY_CLASS; break;
+		}
+#endif
+                if (CreateProcess(
+                        exec_path,
+                        command_line,
+                        NULL,
+                        0, /* default security attributes for thread */
+                        TRUE, /* inherit handles (e.g. helper pipes, oserv socket) */
+                        flags,
+                        envblk,
+                        0, /* default starting directory */
+                        &startInfo,
+                        &procInfo) == FALSE) {
+
+                        pproc->last_err = GetLastError();
+                        pproc->lerrno = E_FORK;
+                        fprintf(stderr, "process_begin: CreateProcess(%s, %s, ...) failed.\n",
+                                exec_path ? exec_path : "NULL", command_line);
+                        free(envblk);
+                        free( command_line );
+                        return(-1);
+                }
+#ifdef KMK
+                switch (process_priority) {
+                case 1: SetThreadPriority(procInfo.hThread, THREAD_PRIORITY_IDLE); break;
+                case 2: SetThreadPriority(procInfo.hThread, THREAD_PRIORITY_BELOW_NORMAL); break;
+                case 3: SetThreadPriority(procInfo.hThread, THREAD_PRIORITY_NORMAL); break;
+                case 4: SetThreadPriority(procInfo.hThread, THREAD_PRIORITY_HIGHEST); break;
+                case 5: SetThreadPriority(procInfo.hThread, THREAD_PRIORITY_TIME_CRITICAL); break;
+                }
+                ResumeThread(procInfo.hThread);
+#endif
+        }
+
+        pproc->pid = (pid_t)procInfo.hProcess;
+        /* Close the thread handle -- we'll just watch the process */
+        CloseHandle(procInfo.hThread);
+
+        /* Close the halves of the pipes we don't need */
+        if ((HANDLE)pproc->sv_stdin[1] != INVALID_HANDLE_VALUE && pproc->sv_stdin[1])
+          CloseHandle((HANDLE)pproc->sv_stdin[1]);
+        if ((HANDLE)pproc->sv_stdout[1] != INVALID_HANDLE_VALUE && pproc->sv_stdout[1])
+          CloseHandle((HANDLE)pproc->sv_stdout[1]);
+        if ((HANDLE)pproc->sv_stderr[1] != INVALID_HANDLE_VALUE && pproc->sv_stderr[1])
+          CloseHandle((HANDLE)pproc->sv_stderr[1]);
+        pproc->sv_stdin[1] = 0;
+        pproc->sv_stdout[1] = 0;
+        pproc->sv_stderr[1] = 0;
+
+        free( command_line );
+        free(envblk);
+        pproc->lerrno=0;
+        return 0;
+}
+
+
+
+#if 0   /* unused */
+static DWORD
+proc_stdin_thread(sub_process *pproc)
+{
+        DWORD in_done;
+        for (;;) {
+                if (WriteFile( (HANDLE) pproc->sv_stdin[0], pproc->inp, pproc->incnt,
+                                         &in_done, NULL) == FALSE)
+                        _endthreadex(0);
+                // This if should never be true for anonymous pipes, but gives
+                // us a chance to change I/O mechanisms later
+                if (in_done < pproc->incnt) {
+                        pproc->incnt -= in_done;
+                        pproc->inp += in_done;
+                } else {
+                        _endthreadex(0);
+                }
+        }
+        return 0; // for compiler warnings only.. not reached
+}
+
+static DWORD
+proc_stdout_thread(sub_process *pproc)
+{
+        DWORD bufsize = 1024;
+        char c;
+        DWORD nread;
+        pproc->outp = malloc(bufsize);
+        if (pproc->outp == NULL)
+                _endthreadex(0);
+        pproc->outcnt = 0;
+
+        for (;;) {
+                if (ReadFile( (HANDLE)pproc->sv_stdout[0], &c, 1, &nread, NULL)
+                                        == FALSE) {
+/*                      map_windows32_error_to_string(GetLastError());*/
+                        _endthreadex(0);
+                }
+                if (nread == 0)
+                        _endthreadex(0);
+                if (pproc->outcnt + nread > bufsize) {
+                        bufsize += nread + 512;
+                        pproc->outp = realloc(pproc->outp, bufsize);
+                        if (pproc->outp == NULL) {
+                                pproc->outcnt = 0;
+                                _endthreadex(0);
+                        }
+                }
+                pproc->outp[pproc->outcnt++] = c;
+        }
+        return 0;
+}
+
+static DWORD
+proc_stderr_thread(sub_process *pproc)
+{
+        DWORD bufsize = 1024;
+        char c;
+        DWORD nread;
+        pproc->errp = malloc(bufsize);
+        if (pproc->errp == NULL)
+                _endthreadex(0);
+        pproc->errcnt = 0;
+
+        for (;;) {
+                if (ReadFile( (HANDLE)pproc->sv_stderr[0], &c, 1, &nread, NULL) == FALSE) {
+                        map_windows32_error_to_string(GetLastError());
+                        _endthreadex(0);
+                }
+                if (nread == 0)
+                        _endthreadex(0);
+                if (pproc->errcnt + nread > bufsize) {
+                        bufsize += nread + 512;
+                        pproc->errp = realloc(pproc->errp, bufsize);
+                        if (pproc->errp == NULL) {
+                                pproc->errcnt = 0;
+                                _endthreadex(0);
+                        }
+                }
+                pproc->errp[pproc->errcnt++] = c;
+        }
+        return 0;
+}
+
+
+/*
+ * Purpose: collects output from child process and returns results
+ *
+ * Description:
+ *
+ * Returns:
+ *
+ * Notes/Dependencies:
+ */
+        long
+process_pipe_io(
+        HANDLE proc,
+        char *stdin_data,
+        int stdin_data_len)
+{
+        sub_process *pproc = (sub_process *)proc;
+        bool_t stdin_eof = FALSE, stdout_eof = FALSE, stderr_eof = FALSE;
+        HANDLE childhand = (HANDLE) pproc->pid;
+        HANDLE tStdin = NULL, tStdout = NULL, tStderr = NULL;
+        unsigned int dwStdin, dwStdout, dwStderr;
+        HANDLE wait_list[4];
+        DWORD wait_count;
+        DWORD wait_return;
+        HANDLE ready_hand;
+        bool_t child_dead = FALSE;
+        BOOL GetExitCodeResult;
+#ifdef KMK
+	assert (pproc->enmType == kRegular);
+#endif
+
+        /*
+         *  Create stdin thread, if needed
+         */
+        pproc->inp = stdin_data;
+        pproc->incnt = stdin_data_len;
+        if (!pproc->inp) {
+                stdin_eof = TRUE;
+                CloseHandle((HANDLE)pproc->sv_stdin[0]);
+                pproc->sv_stdin[0] = 0;
+        } else {
+                tStdin = (HANDLE) _beginthreadex( 0, 1024,
+                        (unsigned (__stdcall *) (void *))proc_stdin_thread,
+                                                  pproc, 0, &dwStdin);
+                if (tStdin == 0) {
+                        pproc->last_err = GetLastError();
+                        pproc->lerrno = E_SCALL;
+                        goto done;
+                }
+        }
+
+        /*
+         *   Assume child will produce stdout and stderr
+         */
+        tStdout = (HANDLE) _beginthreadex( 0, 1024,
+                (unsigned (__stdcall *) (void *))proc_stdout_thread, pproc, 0,
+                &dwStdout);
+        tStderr = (HANDLE) _beginthreadex( 0, 1024,
+                (unsigned (__stdcall *) (void *))proc_stderr_thread, pproc, 0,
+                &dwStderr);
+
+        if (tStdout == 0 || tStderr == 0) {
+
+                pproc->last_err = GetLastError();
+                pproc->lerrno = E_SCALL;
+                goto done;
+        }
+
+
+        /*
+         *  Wait for all I/O to finish and for the child process to exit
+         */
+
+        while (!stdin_eof || !stdout_eof || !stderr_eof || !child_dead) {
+                wait_count = 0;
+                if (!stdin_eof) {
+                        wait_list[wait_count++] = tStdin;
+                }
+                if (!stdout_eof) {
+                        wait_list[wait_count++] = tStdout;
+                }
+                if (!stderr_eof) {
+                        wait_list[wait_count++] = tStderr;
+                }
+                if (!child_dead) {
+                        wait_list[wait_count++] = childhand;
+                }
+
+                wait_return = WaitForMultipleObjects(wait_count, wait_list,
+                         FALSE, /* don't wait for all: one ready will do */
+                         child_dead? 1000 :INFINITE); /* after the child dies, subthreads have
+                                one second to collect all remaining output */
+
+                if (wait_return == WAIT_FAILED) {
+/*                      map_windows32_error_to_string(GetLastError());*/
+                        pproc->last_err = GetLastError();
+                        pproc->lerrno = E_SCALL;
+                        goto done;
+                }
+
+                ready_hand = wait_list[wait_return - WAIT_OBJECT_0];
+
+                if (ready_hand == tStdin) {
+                        CloseHandle((HANDLE)pproc->sv_stdin[0]);
+                        pproc->sv_stdin[0] = 0;
+                        CloseHandle(tStdin);
+                        tStdin = 0;
+                        stdin_eof = TRUE;
+
+                } else if (ready_hand == tStdout) {
+
+                        CloseHandle((HANDLE)pproc->sv_stdout[0]);
+                        pproc->sv_stdout[0] = 0;
+                        CloseHandle(tStdout);
+                        tStdout = 0;
+                        stdout_eof = TRUE;
+
+                } else if (ready_hand == tStderr) {
+
+                        CloseHandle((HANDLE)pproc->sv_stderr[0]);
+                        pproc->sv_stderr[0] = 0;
+                        CloseHandle(tStderr);
+                        tStderr = 0;
+                        stderr_eof = TRUE;
+
+                } else if (ready_hand == childhand) {
+
+                        DWORD ierr;
+                        GetExitCodeResult = GetExitCodeProcess(childhand, &ierr);
+                        if (ierr == CONTROL_C_EXIT) {
+                                pproc->signal = SIGINT;
+                        } else {
+                                pproc->exit_code = ierr;
+                        }
+                        if (GetExitCodeResult == FALSE) {
+                                pproc->last_err = GetLastError();
+                                pproc->lerrno = E_SCALL;
+                                goto done;
+                        }
+                        child_dead = TRUE;
+
+                } else {
+
+                        /* ?? Got back a handle we didn't query ?? */
+                        pproc->last_err = 0;
+                        pproc->lerrno = E_FAIL;
+                        goto done;
+                }
+        }
+
+ done:
+        if (tStdin != 0)
+                CloseHandle(tStdin);
+        if (tStdout != 0)
+                CloseHandle(tStdout);
+        if (tStderr != 0)
+                CloseHandle(tStderr);
+
+        if (pproc->lerrno)
+                return(-1);
+        else
+                return(0);
+
+}
+#endif  /* unused */
+
+#ifndef KMK /* unused */
+/*
+ * Purpose: collects output from child process and returns results
+ *
+ * Description:
+ *
+ * Returns:
+ *
+ * Notes/Dependencies:
+ */
+        long
+process_file_io(
+        HANDLE proc)
+{
+        sub_process *pproc;
+
+        if (proc == NULL)
+                pproc = process_wait_for_any_private(1, 0);
+        else
+                pproc = (sub_process *)proc;
+
+        /* some sort of internal error */
+        if (!pproc)
+                return -1;
+
+	return process_file_io_private(proc, TRUE);
+}
+#endif /* !KMK - unused */
+
+/* private function, avoid some kernel calls. (bird) */
+static long
+process_file_io_private(
+	sub_process *pproc,
+	BOOL fNeedToWait)
+{
+	HANDLE childhand;
+	DWORD wait_return;
+	BOOL GetExitCodeResult;
+	DWORD ierr;
+
+        childhand = (HANDLE) pproc->pid;
+
+        /*
+         * This function is poorly named, and could also be used just to wait
+         * for child death if you're doing your own pipe I/O.  If that is
+         * the case, close the pipe handles here.
+         */
+        if (pproc->sv_stdin[0]) {
+                CloseHandle((HANDLE)pproc->sv_stdin[0]);
+                pproc->sv_stdin[0] = 0;
+        }
+        if (pproc->sv_stdout[0]) {
+                CloseHandle((HANDLE)pproc->sv_stdout[0]);
+                pproc->sv_stdout[0] = 0;
+        }
+        if (pproc->sv_stderr[0]) {
+                CloseHandle((HANDLE)pproc->sv_stderr[0]);
+                pproc->sv_stderr[0] = 0;
+        }
+
+#ifdef KMK
+	if (childhand == NULL || childhand == INVALID_HANDLE_VALUE) {
+		goto done2;
+	}
+#endif
+
+        /*
+         *  Wait for the child process to exit
+         */
+
+    if (fNeedToWait) { /* bird */
+        wait_return = WaitForSingleObject(childhand, INFINITE);
+
+        if (wait_return != WAIT_OBJECT_0) {
+/*              map_windows32_error_to_string(GetLastError());*/
+                pproc->last_err = GetLastError();
+                pproc->lerrno = E_SCALL;
+                goto done2;
+        }
+    } /* bird */
+
+        GetExitCodeResult = GetExitCodeProcess(childhand, &ierr);
+        if (ierr == CONTROL_C_EXIT) {
+                pproc->signal = SIGINT;
+        } else {
+                pproc->exit_code = ierr;
+        }
+        if (GetExitCodeResult == FALSE) {
+                pproc->last_err = GetLastError();
+                pproc->lerrno = E_SCALL;
+        }
+
+done2:
+        if (pproc->lerrno)
+                return(-1);
+        else
+                return(0);
+
+}
+
+/*
+ * Description:  Clean up any leftover handles, etc.  It is up to the
+ * caller to manage and free the input, output, and stderr buffers.
+ */
+        void
+process_cleanup(
+        HANDLE proc)
+{
+        sub_process *pproc = (sub_process *)proc;
+        int i;
+
+#ifdef KMK
+    if (pproc->enmType == kRegular) {
+#endif
+        if (pproc->using_pipes) {
+                for (i= 0; i <= 1; i++) {
+                        if ((HANDLE)pproc->sv_stdin[i]
+                            && (HANDLE)pproc->sv_stdin[i] != INVALID_HANDLE_VALUE)
+                                CloseHandle((HANDLE)pproc->sv_stdin[i]);
+                        if ((HANDLE)pproc->sv_stdout[i]
+                            && (HANDLE)pproc->sv_stdout[i] != INVALID_HANDLE_VALUE)
+                                CloseHandle((HANDLE)pproc->sv_stdout[i]);
+                        if ((HANDLE)pproc->sv_stderr[i]
+                            && (HANDLE)pproc->sv_stderr[i] != INVALID_HANDLE_VALUE)
+                                CloseHandle((HANDLE)pproc->sv_stderr[i]);
+                }
+        }
+        if ((HANDLE)pproc->pid)
+                CloseHandle((HANDLE)pproc->pid);
+#ifdef KMK
+    } else if (pproc->enmType == kSubmit) {
+        kSubmitSubProcCleanup(pproc->clue);
+    } else {
+       assert(0);
+       return;
+    }
+        pproc->enmType = kSubProcFreed;
+#endif
+
+        free(pproc);
+}
+
+
+/*
+ * Description:
+ *       Create a command line buffer to pass to CreateProcess
+ *
+ * Returns:  the buffer or NULL for failure
+ *      Shell case:  sh_name a:/full/path/to/script argv[1] argv[2] ...
+ *  Otherwise:   argv[0] argv[1] argv[2] ...
+ *
+ * Notes/Dependencies:
+ *   CreateProcess does not take an argv, so this command creates a
+ *   command line for the executable.
+ */
+
+static char *
+make_command_line( char *shell_name, char *full_exec_path, char **argv)
+{
+        int             argc = 0;
+        char**          argvi;
+        int*            enclose_in_quotes = NULL;
+        int*            enclose_in_quotes_i;
+        unsigned int    bytes_required = 0;
+        char*           command_line;
+        char*           command_line_i;
+        int  cygwin_mode = 0; /* HAVE_CYGWIN_SHELL */
+        int have_sh = 0; /* HAVE_CYGWIN_SHELL */
+#undef HAVE_CYGWIN_SHELL /* bird: paranoia */
+#ifdef HAVE_CYGWIN_SHELL
+        have_sh = (shell_name != NULL || strstr(full_exec_path, "sh.exe"));
+        cygwin_mode = 1;
+#endif
+
+        if (shell_name && full_exec_path) {
+                bytes_required
+                  = strlen(shell_name) + 1 + strlen(full_exec_path);
+                /*
+                 * Skip argv[0] if any, when shell_name is given.
+                 * The special case of "-c" in full_exec_path means
+                 * argv[0] is not the shell name, but the command string
+                 * to pass to the shell.
+                 */
+                if (*argv && strcmp(full_exec_path, "-c")) argv++;
+                /*
+                 * Add one for the intervening space.
+                 */
+                if (*argv) bytes_required++;
+        }
+
+        argvi = argv;
+        while (*(argvi++)) argc++;
+
+        if (argc) {
+                enclose_in_quotes = (int*) calloc(1, argc * sizeof(int));
+
+                if (!enclose_in_quotes) {
+                        return NULL;
+                }
+        }
+
+        /* We have to make one pass through each argv[i] to see if we need
+         * to enclose it in ", so we might as well figure out how much
+         * memory we'll need on the same pass.
+         */
+
+        argvi = argv;
+        enclose_in_quotes_i = enclose_in_quotes;
+        while(*argvi) {
+                char* p = *argvi;
+                unsigned int backslash_count = 0;
+
+                /*
+                 * We have to enclose empty arguments in ".
+                 */
+                if (!(*p)) *enclose_in_quotes_i = 1;
+
+                while(*p) {
+                        switch (*p) {
+                        case '\"':
+                                /*
+                                 * We have to insert a backslash for each "
+                                 * and each \ that precedes the ".
+                                 */
+                                bytes_required += (backslash_count + 1);
+                                backslash_count = 0;
+                                break;
+
+#if !defined(HAVE_MKS_SHELL) && !defined(HAVE_CYGWIN_SHELL)
+                        case '\\':
+                                backslash_count++;
+                                break;
+#endif
+        /*
+         * At one time we set *enclose_in_quotes_i for '*' or '?' to suppress
+         * wildcard expansion in programs linked with MSVC's SETARGV.OBJ so
+         * that argv in always equals argv out. This was removed.  Say you have
+         * such a program named glob.exe.  You enter
+         * glob '*'
+         * at the sh command prompt.  Obviously the intent is to make glob do the
+         * wildcarding instead of sh.  If we set *enclose_in_quotes_i for '*' or '?',
+         * then the command line that glob would see would be
+         * glob "*"
+         * and the _setargv in SETARGV.OBJ would _not_ expand the *.
+         */
+                        case ' ':
+                        case '\t':
+                                *enclose_in_quotes_i = 1;
+                                /* fall through */
+
+                        default:
+                                backslash_count = 0;
+                                break;
+                        }
+
+                        /*
+                         * Add one for each character in argv[i].
+                         */
+                        bytes_required++;
+
+                        p++;
+                }
+
+                if (*enclose_in_quotes_i) {
+                        /*
+                         * Add one for each enclosing ",
+                         * and one for each \ that precedes the
+                         * closing ".
+                         */
+                        bytes_required += (backslash_count + 2);
+                }
+
+                /*
+                 * Add one for the intervening space.
+                 */
+                if (*(++argvi)) bytes_required++;
+                enclose_in_quotes_i++;
+        }
+
+        /*
+         * Add one for the terminating NULL.
+         */
+        bytes_required++;
+#ifdef KMK /* for the space before the final " in case we need it. */
+	bytes_required++;
+#endif
+
+        command_line = (char*) malloc(bytes_required);
+
+        if (!command_line) {
+                free(enclose_in_quotes);
+                return NULL;
+        }
+
+        command_line_i = command_line;
+
+        if (shell_name && full_exec_path) {
+                while(*shell_name) {
+                        *(command_line_i++) = *(shell_name++);
+                }
+
+                *(command_line_i++) = ' ';
+
+                while(*full_exec_path) {
+                        *(command_line_i++) = *(full_exec_path++);
+                }
+
+                if (*argv) {
+                        *(command_line_i++) = ' ';
+                }
+        }
+
+        argvi = argv;
+        enclose_in_quotes_i = enclose_in_quotes;
+
+        while(*argvi) {
+                char* p = *argvi;
+                unsigned int backslash_count = 0;
+
+                if (*enclose_in_quotes_i) {
+                        *(command_line_i++) = '\"';
+                }
+
+                while(*p) {
+                        if (*p == '\"') {
+                                if (cygwin_mode && have_sh) { /* HAVE_CYGWIN_SHELL */
+                                        /* instead of a \", cygwin likes "" */
+                                        *(command_line_i++) = '\"';
+                                } else {
+
+                                /*
+                                 * We have to insert a backslash for the "
+                                 * and each \ that precedes the ".
+                                 */
+                                backslash_count++;
+
+                                while(backslash_count) {
+                                        *(command_line_i++) = '\\';
+                                        backslash_count--;
+                                };
+                                }
+#if !defined(HAVE_MKS_SHELL) && !defined(HAVE_CYGWIN_SHELL)
+                        } else if (*p == '\\') {
+                                backslash_count++;
+                        } else {
+                                backslash_count = 0;
+#endif
+                        }
+
+                        /*
+                         * Copy the character.
+                         */
+                        *(command_line_i++) = *(p++);
+                }
+
+                if (*enclose_in_quotes_i) {
+#if !defined(HAVE_MKS_SHELL) && !defined(HAVE_CYGWIN_SHELL)
+                        /*
+                         * Add one \ for each \ that precedes the
+                         * closing ".
+                         */
+                        while(backslash_count--) {
+                                *(command_line_i++) = '\\';
+                        };
+#endif
+#ifdef KMK
+                        /*
+                         * ash it put off by echo "hello world" ending up as:
+                         *  G:/.../kmk_ash.exe -c "echo ""hello world"""
+                         * It wants a space before the last '"'.
+			 * (The 'test_shell' goals in Makefile.kmk tests this problem.)
+                         */
+                        if (command_line_i[-1] == '\"' /* && cygwin_mode && have_sh*/ && !argvi[1]) {
+                            *(command_line_i++) = ' ';
+                        }
+#endif
+
+                        *(command_line_i++) = '\"';
+                }
+
+                /*
+                 * Append an intervening space.
+                 */
+                if (*(++argvi)) {
+                        *(command_line_i++) = ' ';
+                }
+
+                enclose_in_quotes_i++;
+        }
+
+        /*
+         * Append the terminating NULL.
+         */
+        *command_line_i = '\0';
+
+        free(enclose_in_quotes);
+        return command_line;
+}
+
+/*
+ * Description: Given an argv and optional envp, launch the process
+ *              using the default stdin, stdout, and stderr handles.
+ *              Also, register process so that process_wait_for_any_private()
+ *              can be used via process_file_io(NULL) or
+ *              process_wait_for_any().
+ *
+ * Returns:
+ *
+ * Notes/Dependencies:
+ */
+HANDLE
+process_easy(
+        char **argv,
+        char **envp,
+        int outfd,
+        int errfd)
+{
+  HANDLE hIn = INVALID_HANDLE_VALUE;
+  HANDLE hOut = INVALID_HANDLE_VALUE;
+  HANDLE hErr = INVALID_HANDLE_VALUE;
+  HANDLE hProcess, tmpIn, tmpOut, tmpErr;
+  DWORD e;
+
+  if (proc_index >= MAXIMUM_WAIT_OBJECTS) {
+        DB (DB_JOBS, ("process_easy: All process slots used up\n"));
+        return INVALID_HANDLE_VALUE;
+  }
+#ifdef KMK /* We can effort here by lettering CreateProcess/kernel do the standard handle duplication. */
+ if (outfd != -1 || errfd != -1) {
+#endif
+  /* Standard handles returned by GetStdHandle can be NULL or
+     INVALID_HANDLE_VALUE if the parent process closed them.  If that
+     happens, we open the null device and pass its handle to
+     CreateProcess as the corresponding handle to inherit.  */
+  tmpIn = GetStdHandle(STD_INPUT_HANDLE);
+  if (DuplicateHandle(GetCurrentProcess(),
+                      tmpIn,
+                      GetCurrentProcess(),
+                      &hIn,
+                      0,
+                      TRUE,
+                      DUPLICATE_SAME_ACCESS) == FALSE) {
+    if ((e = GetLastError()) == ERROR_INVALID_HANDLE) {
+      tmpIn = CreateFile("NUL", GENERIC_READ,
+                         FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+                         OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+      if (tmpIn != INVALID_HANDLE_VALUE
+          && DuplicateHandle(GetCurrentProcess(),
+                             tmpIn,
+                             GetCurrentProcess(),
+                             &hIn,
+                             0,
+                             TRUE,
+                             DUPLICATE_SAME_ACCESS) == FALSE)
+        CloseHandle(tmpIn);
+    }
+    if (hIn == INVALID_HANDLE_VALUE) {
+      fprintf(stderr, "process_easy: DuplicateHandle(In) failed (e=%ld)\n", e);
+      return INVALID_HANDLE_VALUE;
+    }
+  }
+  if (outfd >= 0)
+    tmpOut = (HANDLE)_get_osfhandle (outfd);
+  else
+    tmpOut = GetStdHandle (STD_OUTPUT_HANDLE);
+  if (DuplicateHandle(GetCurrentProcess(),
+                      tmpOut,
+                      GetCurrentProcess(),
+                      &hOut,
+                      0,
+                      TRUE,
+                      DUPLICATE_SAME_ACCESS) == FALSE) {
+    if ((e = GetLastError()) == ERROR_INVALID_HANDLE) {
+      tmpOut = CreateFile("NUL", GENERIC_WRITE,
+                          FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+                          OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+      if (tmpOut != INVALID_HANDLE_VALUE
+          && DuplicateHandle(GetCurrentProcess(),
+                             tmpOut,
+                             GetCurrentProcess(),
+                             &hOut,
+                             0,
+                             TRUE,
+                             DUPLICATE_SAME_ACCESS) == FALSE)
+        CloseHandle(tmpOut);
+    }
+    if (hOut == INVALID_HANDLE_VALUE) {
+      fprintf(stderr, "process_easy: DuplicateHandle(Out) failed (e=%ld)\n", e);
+      return INVALID_HANDLE_VALUE;
+    }
+  }
+  if (errfd >= 0)
+    tmpErr = (HANDLE)_get_osfhandle (errfd);
+  else
+    tmpErr = GetStdHandle(STD_ERROR_HANDLE);
+  if (DuplicateHandle(GetCurrentProcess(),
+                      tmpErr,
+                      GetCurrentProcess(),
+                      &hErr,
+                      0,
+                      TRUE,
+                      DUPLICATE_SAME_ACCESS) == FALSE) {
+    if ((e = GetLastError()) == ERROR_INVALID_HANDLE) {
+      tmpErr = CreateFile("NUL", GENERIC_WRITE,
+                          FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+                          OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+      if (tmpErr != INVALID_HANDLE_VALUE
+          && DuplicateHandle(GetCurrentProcess(),
+                             tmpErr,
+                             GetCurrentProcess(),
+                             &hErr,
+                             0,
+                             TRUE,
+                             DUPLICATE_SAME_ACCESS) == FALSE)
+        CloseHandle(tmpErr);
+    }
+    if (hErr == INVALID_HANDLE_VALUE) {
+      fprintf(stderr, "process_easy: DuplicateHandle(Err) failed (e=%ld)\n", e);
+      return INVALID_HANDLE_VALUE;
+    }
+  }
+#ifdef KMK /* saving effort */
+ }
+#endif
+
+  hProcess = process_init_fd(hIn, hOut, hErr);
+
+  if (process_begin(hProcess, argv, envp, argv[0], NULL)) {
+    fake_exits_pending++;
+    /* process_begin() failed: make a note of that.  */
+    if (!((sub_process*) hProcess)->last_err)
+      ((sub_process*) hProcess)->last_err = -1;
+#ifdef KMK
+    if (!((sub_process*) hProcess)->exit_code)
+#endif
+      ((sub_process*) hProcess)->exit_code = process_last_err(hProcess);
+
+    /* close up unused handles */
+    if (hIn != INVALID_HANDLE_VALUE)
+      CloseHandle(hIn);
+    if (hOut != INVALID_HANDLE_VALUE)
+      CloseHandle(hOut);
+    if (hErr != INVALID_HANDLE_VALUE)
+      CloseHandle(hErr);
+  }
+
+  process_register(hProcess);
+
+  return hProcess;
+}
diff --git a/src/kmk/w32/subproc/w32err.c b/src/kmk/w32/subproc/w32err.c
new file mode 100644
index 0000000..14eebed
--- /dev/null
+++ b/src/kmk/w32/subproc/w32err.c
@@ -0,0 +1,85 @@
+/* Error handling for Windows
+Copyright (C) 1996-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <stdlib.h>
+#include <windows.h>
+#include "makeint.h"
+#include "w32err.h"
+
+/*
+ * Description: the windows32 version of perror()
+ *
+ * Returns:  a pointer to a static error
+ *
+ * Notes/Dependencies:  I got this from
+ *      comp.os.ms-windows.programmer.win32
+ */
+const char *
+map_windows32_error_to_string (DWORD ercode) {
+/*
+ * We used to have an MSVC-specific '__declspec (thread)' qualifier
+ * here, with the following comment:
+ *
+ * __declspec (thread) necessary if you will use multiple threads on MSVC
+ *
+ * However, Make was never multithreaded on Windows (except when
+ * Ctrl-C is hit, in which case the main thread is stopped
+ * immediately, so it doesn't matter in this context).  The functions
+ * on sub_proc.c that started and stopped additional threads were
+ * never used, and are now #ifdef'ed away.  Until we need more than
+ * one thread, we have no problems with the following buffer being
+ * static.  (If and when we do need it to be in thread-local storage,
+ * the corresponding GCC qualifier is '__thread'.)
+ */
+    static char szMessageBuffer[128];
+        /* Fill message buffer with a default message in
+         * case FormatMessage fails
+         */
+    wsprintf (szMessageBuffer, "Error %ld\n", ercode);
+
+        /*
+         *  Special code for winsock error handling.
+         */
+        if (ercode > WSABASEERR) {
+#if 0
+                HMODULE hModule = GetModuleHandle("wsock32");
+                if (hModule != NULL) {
+                        FormatMessage(FORMAT_MESSAGE_FROM_HMODULE,
+                                hModule,
+                                ercode,
+                                LANG_NEUTRAL,
+                                szMessageBuffer,
+                                sizeof(szMessageBuffer),
+                                NULL);
+                        FreeLibrary(hModule);
+                }
+#else
+                O (fatal, NILF, szMessageBuffer);
+#endif
+        } else {
+                /*
+                 *  Default system message handling
+                 */
+                FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
+                        NULL,
+                        ercode,
+                        LANG_NEUTRAL,
+                        szMessageBuffer,
+                        sizeof(szMessageBuffer),
+                        NULL);
+        }
+    return szMessageBuffer;
+}
diff --git a/src/kmk/w32/tstFileInfo.c b/src/kmk/w32/tstFileInfo.c
new file mode 100644
index 0000000..94d47bb
--- /dev/null
+++ b/src/kmk/w32/tstFileInfo.c
@@ -0,0 +1,151 @@
+/* $Id: $ */
+/** @file
+ * Test program for some NtQueryInformationFile functionality.
+ */
+
+/*
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+
+#include <stdio.h>
+#include <Windows.h>
+
+typedef enum _FILE_INFORMATION_CLASS {
+    FileDirectoryInformation       = 1,
+    FileFullDirectoryInformation,   // 2
+    FileBothDirectoryInformation,   // 3
+    FileBasicInformation,           // 4  wdm
+    FileStandardInformation,        // 5  wdm
+    FileInternalInformation,        // 6
+    FileEaInformation,              // 7
+    FileAccessInformation,          // 8
+    FileNameInformation,            // 9
+    FileRenameInformation,          // 10
+    FileLinkInformation,            // 11
+    FileNamesInformation,           // 12
+    FileDispositionInformation,     // 13
+    FilePositionInformation,        // 14 wdm
+    FileFullEaInformation,          // 15
+    FileModeInformation,            // 16
+    FileAlignmentInformation,       // 17
+    FileAllInformation,             // 18
+    FileAllocationInformation,      // 19
+    FileEndOfFileInformation,       // 20 wdm
+    FileAlternateNameInformation,   // 21
+    FileStreamInformation,          // 22
+    FilePipeInformation,            // 23
+    FilePipeLocalInformation,       // 24
+    FilePipeRemoteInformation,      // 25
+    FileMailslotQueryInformation,   // 26
+    FileMailslotSetInformation,     // 27
+    FileCompressionInformation,     // 28
+    FileObjectIdInformation,        // 29
+    FileCompletionInformation,      // 30
+    FileMoveClusterInformation,     // 31
+    FileQuotaInformation,           // 32
+    FileReparsePointInformation,    // 33
+    FileNetworkOpenInformation,     // 34
+    FileAttributeTagInformation,    // 35
+    FileTrackingInformation,        // 36
+    FileIdBothDirectoryInformation, // 37
+    FileIdFullDirectoryInformation, // 38
+    FileMaximumInformation
+} FILE_INFORMATION_CLASS, *PFILE_INFORMATION_CLASS;
+
+typedef struct _FILE_NAME_INFORMATION
+{
+    ULONG FileNameLength;
+    WCHAR FileName[1];
+} FILE_NAME_INFORMATION, *PFILE_NAME_INFORMATION;
+
+typedef LONG NTSTATUS;
+
+typedef struct _IO_STATUS_BLOCK
+{
+    union
+    {
+        NTSTATUS Status;
+        PVOID Pointer;
+    };
+    ULONG_PTR Information;
+} IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;
+
+NTSYSAPI
+NTSTATUS
+NTAPI
+NtQueryInformationFile(HANDLE FileHandle, PIO_STATUS_BLOCK IoStatusBlock, PVOID FileInformation,
+                       ULONG Length, FILE_INFORMATION_CLASS FileInformationClass);
+
+
+
+int main(int argc, char **argv)
+{
+    int rc = 0;
+    int i;
+
+    NTSTATUS (NTAPI *pfnNtQueryInformationFile)(HANDLE FileHandle, PIO_STATUS_BLOCK IoStatusBlock, PVOID FileInformation,
+                                                ULONG Length, FILE_INFORMATION_CLASS FileInformationClass);
+
+    pfnNtQueryInformationFile = GetProcAddress(LoadLibrary("ntdll.dll"), "NtQueryInformationFile");
+
+    for (i = 1; i < argc; i++)
+    {
+        HANDLE hFile = CreateFile(argv[i],
+                                  GENERIC_READ,
+                                  FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                  NULL,
+                                  OPEN_EXISTING,
+                                  FILE_FLAG_BACKUP_SEMANTICS,
+                                  NULL);
+        if (hFile)
+        {
+            long rcNt;
+            char abBuf[4096];
+            IO_STATUS_BLOCK Ios;
+
+            memset(abBuf, 0, sizeof(abBuf));
+            memset(&Ios, 0, sizeof(Ios));
+            rcNt = pfnNtQueryInformationFile(hFile, &Ios, abBuf, sizeof(abBuf), FileNameInformation);
+            if (rcNt >= 0)
+            {
+                PFILE_NAME_INFORMATION pFileNameInfo = (PFILE_NAME_INFORMATION)abBuf;
+                printf("#%d: %s - rcNt=%#x - FileNameInformation:\n"
+                       "        FileName: %ls\n"
+                       "  FileNameLength: %lu\n",
+                       i, argv[i], rcNt,
+                       pFileNameInfo->FileName,
+                       pFileNameInfo->FileNameLength
+                       );
+            }
+            else
+                printf("#%d: %s - rcNt=%#x - FileNameInformation!\n", i, argv[i], rcNt);
+
+            CloseHandle(hFile);
+        }
+        else
+        {
+            printf("#%d: %s - open failed, last error %d\n", i, argv[i], GetLastError());
+            rc = 1;
+        }
+    }
+    return rc;
+}
+
diff --git a/src/kmk/w32/w32os.c b/src/kmk/w32/w32os.c
new file mode 100644
index 0000000..fd30661
--- /dev/null
+++ b/src/kmk/w32/w32os.c
@@ -0,0 +1,220 @@
+/* Windows32-based operating system interface for GNU Make.
+Copyright (C) 2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include <windows.h>
+#include <process.h>
+#include <io.h>
+#include "pathstuff.h"
+#ifndef CONFIG_NEW_WIN_CHILDREN
+# include "sub_proc.h"
+#else
+# include "winchildren.h"
+#endif
+#include "w32err.h"
+#include "os.h"
+#include "debug.h"
+
+/* This section provides OS-specific functions to support the jobserver.  */
+
+static char jobserver_semaphore_name[MAX_PATH + 1];
+static HANDLE jobserver_semaphore = NULL;
+
+unsigned int
+jobserver_setup (int slots)
+{
+#ifndef CONFIG_NEW_WIN_CHILDREN
+  /* sub_proc.c cannot wait for more than MAXIMUM_WAIT_OBJECTS objects
+   * and one of them is the job-server semaphore object.  Limit the
+   * number of available job slots to (MAXIMUM_WAIT_OBJECTS - 1). */
+
+  if (slots >= MAXIMUM_WAIT_OBJECTS)
+    {
+      slots = MAXIMUM_WAIT_OBJECTS - 1;
+      DB (DB_JOBS, (_("Jobserver slots limited to %d\n"), slots));
+    }
+#endif
+
+  sprintf (jobserver_semaphore_name, "gmake_semaphore_%d", _getpid ());
+
+  jobserver_semaphore = CreateSemaphore (
+      NULL,                           /* Use default security descriptor */
+      slots,                          /* Initial count */
+      slots,                          /* Maximum count */
+      jobserver_semaphore_name);      /* Semaphore name */
+
+  if (jobserver_semaphore == NULL)
+    {
+      DWORD err = GetLastError ();
+      const char *estr = map_windows32_error_to_string (err);
+      ONS (fatal, NILF,
+           _("creating jobserver semaphore: (Error %ld: %s)"), err, estr);
+    }
+
+  return 1;
+}
+
+unsigned int
+jobserver_parse_auth (const char *auth)
+{
+  jobserver_semaphore = OpenSemaphore (
+      SEMAPHORE_ALL_ACCESS,   /* Semaphore access setting */
+      FALSE,                  /* Child processes DON'T inherit */
+      auth);                  /* Semaphore name */
+
+  if (jobserver_semaphore == NULL)
+    {
+      DWORD err = GetLastError ();
+      const char *estr = map_windows32_error_to_string (err);
+      fatal (NILF, strlen (auth) + INTSTR_LENGTH + strlen (estr),
+             _("internal error: unable to open jobserver semaphore '%s': (Error %ld: %s)"),
+             auth, err, estr);
+    }
+  DB (DB_JOBS, (_("Jobserver client (semaphore %s)\n"), auth));
+
+  return 1;
+}
+
+char *
+jobserver_get_auth ()
+{
+  return xstrdup (jobserver_semaphore_name);
+}
+
+unsigned int
+jobserver_enabled ()
+{
+  return jobserver_semaphore != NULL;
+}
+
+/* Close jobserver semaphore */
+void
+jobserver_clear ()
+{
+  if (jobserver_semaphore != NULL)
+    {
+      CloseHandle (jobserver_semaphore);
+      jobserver_semaphore = NULL;
+    }
+}
+
+void
+jobserver_release (int is_fatal)
+{
+  if (! ReleaseSemaphore (
+          jobserver_semaphore,    /* handle to semaphore */
+          1,                      /* increase count by one */
+          NULL))                  /* not interested in previous count */
+    {
+      if (is_fatal)
+        {
+          DWORD err = GetLastError ();
+          const char *estr = map_windows32_error_to_string (err);
+          ONS (fatal, NILF,
+               _("release jobserver semaphore: (Error %ld: %s)"), err, estr);
+        }
+      perror_with_name ("release_jobserver_semaphore", "");
+    }
+}
+
+unsigned int
+jobserver_acquire_all ()
+{
+  unsigned int tokens = 0;
+  while (1)
+    {
+      DWORD dwEvent = WaitForSingleObject (
+          jobserver_semaphore,    /* Handle to semaphore */
+          0);                     /* DON'T wait on semaphore */
+
+      if (dwEvent != WAIT_OBJECT_0)
+        return tokens;
+
+      ++tokens;
+    }
+}
+
+void
+jobserver_signal ()
+{
+}
+
+void jobserver_pre_child (int recursive)
+{
+}
+
+void jobserver_post_child (int recursive)
+{
+}
+
+void
+jobserver_pre_acquire ()
+{
+}
+
+/* Returns 1 if we got a token, or 0 if a child has completed.
+   The Windows implementation doesn't support load detection.  */
+unsigned int
+jobserver_acquire (int timeout)
+{
+#ifndef CONFIG_NEW_WIN_CHILDREN
+    HANDLE handles[MAXIMUM_WAIT_OBJECTS + 1]; /* bird: + 1 to prevent trashing the stack. */
+#else
+    HANDLE handles[2];
+#endif
+    DWORD dwHandleCount;
+    DWORD dwEvent;
+
+    /* Add jobserver semaphore to first slot. */
+    handles[0] = jobserver_semaphore;
+
+#ifndef CONFIG_NEW_WIN_CHILDREN
+    /* Build array of handles to wait for.  */
+    dwHandleCount = 1 + process_set_handles (&handles[1]);
+    dwEvent = WaitForMultipleObjects (
+        dwHandleCount,  /* number of objects in array */
+        handles,        /* array of objects */
+        FALSE,          /* wait for any object */
+        INFINITE);      /* wait until object is signalled */
+#else
+    /* Add the completed children event as the 2nd one. */
+    handles[1] = (HANDLE)MkWinChildGetCompleteEventHandle ();
+    if (handles[1] == NULL)
+      return 0;
+    dwHandleCount = 2;
+    dwEvent = WaitForMultipleObjectsEx (dwHandleCount,
+                                        handles,
+                                        FALSE /*bWaitAll*/,
+                                        256, /* INFINITE - paranoia, only wait 256 ms before checking again. */
+                                        TRUE /*bAlertable*/);
+#endif
+
+    if (dwEvent == WAIT_FAILED)
+      {
+        DWORD err = GetLastError ();
+        const char *estr = map_windows32_error_to_string (err);
+        ONS (fatal, NILF,
+             _("semaphore or child process wait: (Error %ld: %s)"),
+             err, estr);
+      }
+
+    /* WAIT_OBJECT_0 indicates that the semaphore was signalled.  */
+    return dwEvent == WAIT_OBJECT_0;
+}
diff --git a/src/kmk/w32/winchildren.c b/src/kmk/w32/winchildren.c
new file mode 100644
index 0000000..635fe99
--- /dev/null
+++ b/src/kmk/w32/winchildren.c
@@ -0,0 +1,3729 @@
+/* $Id: winchildren.c 3359 2020-06-05 16:17:17Z bird $ */
+/** @file
+ * Child process creation and management for kmk.
+ */
+
+/*
+ * Copyright (c) 2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/* No GNU coding style here atm, convert if upstreamed. */
+
+/** @page pg_win_children   Windows child process creation and managment
+ *
+ * This new implementation aims at addressing the following:
+ *
+ *      1. Speed up process creation by doing the expensive CreateProcess call
+ *         in a worker thread.
+ *
+ *      2. No 64 process limit imposed by WaitForMultipleObjects.
+ *
+ *      3. Better distribute jobs among processor groups.
+ *
+ *      4. Offloading more expensive kmkbuiltin operations to worker threads,
+ *         making the main thread focus on managing child processes.
+ *
+ *      5. Output synchronization using reusable pipes.
+ *
+ *
+ * To be quite honest, the first item (CreateProcess expense) didn't occur to me
+ * at first and was more of a sideeffect discovered along the way.  A test
+ * rebuilding IPRT went from 4m52s to 3m19s on a 8 thread system.
+ *
+ * The 2nd and 3rd goals are related to newer build servers that have lots of
+ * CPU threads and various Windows NT (aka NT OS/2 at the time) design choices
+ * made in the late 1980ies.
+ *
+ * WaitForMultipleObjects does not support waiting for more than 64 objects,
+ * unlike poll and select.  This is just something everyone ends up having to
+ * work around in the end.
+ *
+ * Affinity masks are uintptr_t sized, so 64-bit hosts can only manage 64
+ * processors and 32-bit only 32.  Workaround was introduced with Windows 7
+ * (IIRC) and is called processor groups.  The CPU threads are grouped into 1 or
+ * more groups of up to 64 processors.  Processes are generally scheduled to a
+ * signle processor group at first, but threads may be changed to be scheduled
+ * on different groups.  This code will try distribute children evenly among the
+ * processor groups, using a very simple algorithm (see details in code).
+ *
+ *
+ * @section sec_win_children_av     Remarks on Microsoft Defender and other AV
+ *
+ * Part of the motivation for writing this code was horrible CPU utilization on
+ * a brand new AMD Threadripper 1950X system with lots of memory and SSDs,
+ * running 64-bit Windows 10 build 16299.
+ *
+ * Turns out Microsoft defender adds some overhead to CreateProcess
+ * and other stuff:
+ *     - Old make with CreateProcess on main thread:
+ *          - With runtime defender enabled: 14 min  6 seconds
+ *          - With runtime defender disabled: 4 min 49 seconds
+ *     - New make with CreateProcess on worker thread (this code):
+ *          - With runtime defender enabled:  6 min 29 seconds
+ *          - With runtime defender disabled: 4 min 36 seconds
+ *          - With runtime defender disabled out dir only: 5 min 59 seconds
+ *
+ * See also kWorker / kSubmit for more bickering about AV & disk encryption.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <Windows.h>
+#include <Winternl.h>
+
+#include "../makeint.h"
+#include "../job.h"
+#include "../filedef.h"
+#include "../debug.h"
+#include "../kmkbuiltin.h"
+#include "winchildren.h"
+
+#include <assert.h>
+#include <process.h>
+#include <intrin.h>
+
+#include "nt/nt_child_inject_standard_handles.h"
+#include "console.h"
+
+#ifndef KMK_BUILTIN_STANDALONE
+extern void kmk_cache_exec_image_w(const wchar_t *); /* imagecache.c */
+#endif
+
+/* Option values from main.c: */
+extern const char *win_job_object_mode;
+extern const char *win_job_object_name;
+extern int         win_job_object_no_kill;
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+#define MKWINCHILD_MAX_PATH     1024
+
+#define MKWINCHILD_DO_SET_PROCESSOR_GROUP
+
+/** Checks the UTF-16 environment variable pointed to is the PATH. */
+#define IS_PATH_ENV_VAR(a_cwcVar, a_pwszVar) \
+    (   (a_cwcVar) >= 5 \
+     &&  (a_pwszVar)[4] == L'=' \
+     && ((a_pwszVar)[0] == L'P' || (a_pwszVar)[0] == L'p') \
+     && ((a_pwszVar)[1] == L'A' || (a_pwszVar)[1] == L'a') \
+     && ((a_pwszVar)[2] == L'T' || (a_pwszVar)[2] == L't') \
+     && ((a_pwszVar)[3] == L'H' || (a_pwszVar)[3] == L'h') )
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+/** Pointer to a childcare worker thread.   */
+typedef struct WINCHILDCAREWORKER *PWINCHILDCAREWORKER;
+/** Pointer to a windows child process. */
+typedef struct WINCHILD *PWINCHILD;
+
+
+/**
+ * Child process type.
+ */
+typedef enum WINCHILDTYPE
+{
+    WINCHILDTYPE_INVALID = 0,
+    /** Normal child process. */
+    WINCHILDTYPE_PROCESS,
+#ifdef KMK
+    /** kmkbuiltin command. */
+    WINCHILDTYPE_BUILT_IN,
+    /** kmkbuiltin_append result write out. */
+    WINCHILDTYPE_APPEND,
+    /** kSubmit job. */
+    WINCHILDTYPE_SUBMIT,
+    /** kmk_redirect job. */
+    WINCHILDTYPE_REDIRECT,
+#endif
+    /** End of valid child types. */
+    WINCHILDTYPE_END
+} WINCHILDTYPE;
+
+
+/**
+ * Windows child process.
+ */
+typedef struct WINCHILD
+{
+    /** Magic / eyecatcher (WINCHILD_MAGIC). */
+    ULONG                   uMagic;
+    /** Child type. */
+    WINCHILDTYPE            enmType;
+    /** Pointer to the next child process. */
+    PWINCHILD               pNext;
+    /** The pid for this child. */
+    pid_t                   pid;
+    /** The make child structure associated with this child. */
+    struct child           *pMkChild;
+
+    /** The process exit code. */
+    int                     iExitCode;
+    /** Kill signal, in case we or someone else killed it. */
+    int                     iSignal;
+    /** Set if core was dumped. */
+    int                     fCoreDumped;
+    /** Set if the a child process is a candidate for cl.exe where we supress
+     * annoying source name output. */
+    BOOL                    fProbableClExe;
+    /** The worker executing this child. */
+    PWINCHILDCAREWORKER     pWorker;
+
+    /** Type specific data. */
+    union
+    {
+        /** Data for WINCHILDTYPE_PROCESS.   */
+        struct
+        {
+            /** Argument vector (single allocation, strings following array). */
+            char          **papszArgs;
+            /** Length of the argument strings. */
+            size_t          cbArgsStrings;
+            /** Environment vector.  Only a copy if fEnvIsCopy is set. */
+            char          **papszEnv;
+            /** If we made a copy of the environment, this is the size of the
+             * strings and terminator string (not in array).  This is done to
+             * speed up conversion, since MultiByteToWideChar can handle '\0'. */
+            size_t          cbEnvStrings;
+            /** The make shell to use (copy). */
+            char           *pszShell;
+            /** Handle to use for standard out. */
+            HANDLE          hStdOut;
+            /** Handle to use for standard out. */
+            HANDLE          hStdErr;
+            /** Whether to close hStdOut after creating the process.  */
+            BOOL            fCloseStdOut;
+            /** Whether to close hStdErr after creating the process.  */
+            BOOL            fCloseStdErr;
+            /** Whether to catch output from the process. */
+            BOOL            fCatchOutput;
+
+            /** Child process handle. */
+            HANDLE          hProcess;
+        } Process;
+
+        /** Data for WINCHILDTYPE_BUILT_IN.   */
+        struct
+        {
+            /** The built-in command. */
+            PCKMKBUILTINENTRY pBuiltIn;
+            /** Number of arguments. */
+            int             cArgs;
+            /** Argument vector (single allocation, strings following array). */
+            char          **papszArgs;
+            /** Environment vector.  Only a copy if fEnvIsCopy is set. */
+            char          **papszEnv;
+        } BuiltIn;
+
+        /** Data for WINCHILDTYPE_APPEND.   */
+        struct
+        {
+            /** The filename. */
+            char           *pszFilename;
+            /** How much to append. */
+            size_t          cbAppend;
+            /** What to append. */
+            char           *pszAppend;
+            /** Whether to truncate the file. */
+            int             fTruncate;
+        } Append;
+
+        /** Data for WINCHILDTYPE_SUBMIT.   */
+        struct
+        {
+            /** The event we're to wait on (hooked up to a pipe) */
+            HANDLE          hEvent;
+            /** Parameter for the cleanup callback. */
+            void           *pvSubmitWorker;
+            /** Standard output catching pipe. Optional. */
+            PWINCCWPIPE     pStdOut;
+            /** Standard error catching pipe. Optional. */
+            PWINCCWPIPE     pStdErr;
+        } Submit;
+
+        /** Data for WINCHILDTYPE_REDIRECT.   */
+        struct
+        {
+            /** Child process handle. */
+            HANDLE          hProcess;
+        } Redirect;
+    } u;
+
+} WINCHILD;
+/** WINCHILD::uMagic value. */
+#define WINCHILD_MAGIC      0xbabebabeU
+
+
+/**
+ * Data for a windows childcare worker thread.
+ *
+ * We use one worker thread per child, reusing the threads when possible.
+ *
+ * This setup helps avoid the 64-bit handle with the WaitForMultipleObject API.
+ *
+ * It also helps using all CPUs on systems with more than one CPU group
+ * (typically systems with more than 64 CPU threads or/and multiple sockets, or
+ * special configs).
+ *
+ * This helps facilitates using pipes for collecting output child rather
+ * than temporary files.  Pipes doesn't involve NTFS and can easily be reused.
+ *
+ * Finally, kBuild specific, this allows running kmkbuiltin_xxxx commands in
+ * threads.
+ */
+typedef struct WINCHILDCAREWORKER
+{
+    /** Magic / eyecatcher (WINCHILDCAREWORKER_MAGIC). */
+    ULONG                   uMagic;
+    /** The worker index. */
+    unsigned int            idxWorker;
+    /** The processor group for this worker. */
+    unsigned int            iProcessorGroup;
+    /** The thread ID. */
+    unsigned int            tid;
+    /** The thread handle. */
+    HANDLE                  hThread;
+    /** The event the thread is idling on. */
+    HANDLE                  hEvtIdle;
+    /** The pipe catching standard output from a child. */
+    PWINCCWPIPE             pStdOut;
+    /** The pipe catching standard error from a child. */
+    PWINCCWPIPE             pStdErr;
+
+    /** Pointer to the current child. */
+    PWINCHILD volatile      pCurChild;
+    /** List of children pending execution on this worker.
+     * This is updated atomitically just like g_pTailCompletedChildren.  */
+    PWINCHILD volatile      pTailTodoChildren;
+    /** TRUE if idle, FALSE if not. */
+    long volatile           fIdle;
+} WINCHILDCAREWORKER;
+/** WINCHILD::uMagic value. */
+#define WINCHILDCAREWORKER_MAGIC    0xdad0dad0U
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** Whether it's initialized or not. */
+static BOOL                 g_fInitialized = FALSE;
+/** Set when we're shutting down everything. */
+static BOOL volatile        g_fShutdown = FALSE;
+/** Event used to wait for children. */
+static HANDLE               g_hEvtWaitChildren = INVALID_HANDLE_VALUE;
+/** Number of childcare workers currently in g_papChildCareworkers. */
+static unsigned             g_cChildCareworkers = 0;
+/** Maximum number of childcare workers in g_papChildCareworkers. */
+static unsigned             g_cChildCareworkersMax = 0;
+/** Pointer to childcare workers. */
+static PWINCHILDCAREWORKER *g_papChildCareworkers = NULL;
+/** The processor group allocator state. */
+static MKWINCHILDCPUGROUPALLOCSTATE g_ProcessorGroupAllocator;
+/** Number of processor groups in the system.   */
+static unsigned             g_cProcessorGroups = 1;
+/** Array detailing how many active processors there are in each group. */
+static unsigned const      *g_pacProcessorsInGroup = &g_cProcessorGroups;
+/** Kernel32!GetActiveProcessorGroupCount */
+static WORD (WINAPI        *g_pfnGetActiveProcessorGroupCount)(VOID);
+/** Kernel32!GetActiveProcessorCount */
+static DWORD (WINAPI       *g_pfnGetActiveProcessorCount)(WORD);
+/** Kernel32!SetThreadGroupAffinity */
+static BOOL (WINAPI        *g_pfnSetThreadGroupAffinity)(HANDLE, CONST GROUP_AFFINITY *, GROUP_AFFINITY *);
+/** NTDLL!NtQueryInformationProcess */
+static NTSTATUS (NTAPI     *g_pfnNtQueryInformationProcess)(HANDLE, PROCESSINFOCLASS, PVOID, ULONG, PULONG);
+/** Set if the windows host is 64-bit. */
+static BOOL                 g_f64BitHost = (K_ARCH_BITS == 64);
+/** Windows version info.
+ * @note Putting this before the volatile stuff, hoping to keep it in a
+ *       different cache line than the static bits above. */
+static OSVERSIONINFOA       g_VersionInfo = { sizeof(g_VersionInfo), 4, 0, 1381, VER_PLATFORM_WIN32_NT, {0} };
+
+/** Children that has been completed.
+ * This is updated atomically, pushing completed children in LIFO fashion
+ * (thus 'tail'), then hitting g_hEvtWaitChildren if head. */
+static PWINCHILD volatile   g_pTailCompletedChildren = NULL;
+
+/** Number of idle pending children.
+ * This is updated before g_hEvtWaitChildren is signalled. */
+static unsigned volatile    g_cPendingChildren = 0;
+
+/** Number of idle childcare worker threads. */
+static unsigned volatile    g_cIdleChildcareWorkers = 0;
+/** Index of the last idle child careworker (just a hint). */
+static unsigned volatile    g_idxLastChildcareWorker = 0;
+
+#ifdef WITH_RW_LOCK
+/** RW lock for serializing kmkbuiltin_redirect and CreateProcess. */
+static SRWLOCK              g_RWLock;
+#endif
+
+/** The job object for this make instance, if we created/opened one. */
+static HANDLE               g_hJob = NULL;
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+static void mkWinChildInitJobObjectAssociation(void);
+
+#if K_ARCH_BITS == 32 && !defined(_InterlockedCompareExchangePointer)
+/** _InterlockedCompareExchangePointer is missing? (VS2010) */
+K_INLINE void *_InterlockedCompareExchangePointer(void * volatile *ppvDst, void *pvNew, void *pvOld)
+{
+    return (void *)_InterlockedCompareExchange((long volatile *)ppvDst, (intptr_t)pvNew, (intptr_t)pvOld);
+}
+#endif
+
+
+/**
+ * Initializes the windows child module.
+ *
+ * @param   cJobSlots           The number of job slots.
+ */
+void MkWinChildInit(unsigned int cJobSlots)
+{
+    HMODULE hmod;
+
+    /*
+     * Figure out how many childcare workers first.
+     */
+    static unsigned int const s_cMaxWorkers = 4096;
+    unsigned cWorkers;
+    if (cJobSlots >= 1 && cJobSlots < s_cMaxWorkers)
+        cWorkers = cJobSlots;
+    else
+        cWorkers = s_cMaxWorkers;
+
+    /*
+     * Allocate the array and the child completed event object.
+     */
+    g_papChildCareworkers = (PWINCHILDCAREWORKER *)xcalloc(cWorkers * sizeof(g_papChildCareworkers[0]));
+    g_cChildCareworkersMax = cWorkers;
+
+    g_hEvtWaitChildren = CreateEvent(NULL, FALSE /*fManualReset*/, FALSE /*fInitialState*/, NULL /*pszName*/);
+    if (!g_hEvtWaitChildren)
+        fatal(NILF, INTSTR_LENGTH, _("MkWinChildInit: CreateEvent failed: %u"), GetLastError());
+
+    /*
+     * NTDLL imports that we need.
+     */
+    hmod = GetModuleHandleA("NTDLL.DLL");
+    *(FARPROC *)&g_pfnNtQueryInformationProcess = GetProcAddress(hmod, "NtQueryInformationProcess");
+    if (!g_pfnNtQueryInformationProcess)
+        fatal(NILF, 0, _("MkWinChildInit: NtQueryInformationProcess not found"));
+
+#if K_ARCH_BITS == 32
+    /*
+     * Initialize g_f64BitHost.
+     */
+    if (!IsWow64Process(GetCurrentProcess(), &g_f64BitHost))
+        fatal(NILF, INTSTR_LENGTH, _("MkWinChildInit: IsWow64Process failed: %u"), GetLastError());
+#elif K_ARCH_BITS == 64
+    assert(g_f64BitHost);
+#else
+# error "K_ARCH_BITS is bad/missing"
+#endif
+
+    /*
+     * Figure out how many processor groups there are.
+     * For that we need to first figure the windows version.
+     */
+    if (!GetVersionExA(&g_VersionInfo))
+    {
+        DWORD uRawVer = GetVersion();
+        g_VersionInfo.dwMajorVersion = uRawVer & 0xff;
+        g_VersionInfo.dwMinorVersion = (uRawVer >>  8) &   0xff;
+        g_VersionInfo.dwBuildNumber  = (uRawVer >> 16) & 0x7fff;
+    }
+    if (g_VersionInfo.dwMajorVersion >= 6)
+    {
+        hmod = GetModuleHandleA("KERNEL32.DLL");
+        *(FARPROC *)&g_pfnGetActiveProcessorGroupCount = GetProcAddress(hmod, "GetActiveProcessorGroupCount");
+        *(FARPROC *)&g_pfnGetActiveProcessorCount      = GetProcAddress(hmod, "GetActiveProcessorCount");
+        *(FARPROC *)&g_pfnSetThreadGroupAffinity       = GetProcAddress(hmod, "SetThreadGroupAffinity");
+        if (   g_pfnSetThreadGroupAffinity
+            && g_pfnGetActiveProcessorCount
+            && g_pfnGetActiveProcessorGroupCount)
+        {
+            unsigned int *pacProcessorsInGroup;
+            unsigned      iGroup;
+            g_cProcessorGroups = g_pfnGetActiveProcessorGroupCount();
+            if (g_cProcessorGroups == 0)
+                g_cProcessorGroups = 1;
+
+            pacProcessorsInGroup = (unsigned int *)xmalloc(sizeof(g_pacProcessorsInGroup[0]) * g_cProcessorGroups);
+            g_pacProcessorsInGroup = pacProcessorsInGroup;
+            for (iGroup = 0; iGroup < g_cProcessorGroups; iGroup++)
+                pacProcessorsInGroup[iGroup] = g_pfnGetActiveProcessorCount(iGroup);
+
+            MkWinChildInitCpuGroupAllocator(&g_ProcessorGroupAllocator);
+        }
+        else
+        {
+            g_pfnSetThreadGroupAffinity       = NULL;
+            g_pfnGetActiveProcessorCount      = NULL;
+            g_pfnGetActiveProcessorGroupCount = NULL;
+        }
+    }
+
+#ifdef WITH_RW_LOCK
+    /*
+     * For serializing with standard file handle manipulation (kmkbuiltin_redirect).
+     */
+    InitializeSRWLock(&g_RWLock);
+#endif
+
+    /*
+     * Associate with a job object.
+     */
+    mkWinChildInitJobObjectAssociation();
+
+    /*
+     * This is dead code that was thought to fix a problem observed doing
+     * `tcc.exe /c "kmk |& tee bld.log"` and leading to a crash in cl.exe
+     * when spawned with fInheritHandles = FALSE, see hStdErr=NULL in the
+     * child.  However, it turns out this was probably caused by not clearing
+     * the CRT file descriptor and handle table in the startup info.
+     * Leaving the code here in case it comes in handy after all.
+     */
+#if 0
+    {
+        struct
+        {
+            DWORD  uStdHandle;
+            HANDLE hHandle;
+        } aHandles[3] = { { STD_INPUT_HANDLE, NULL }, { STD_OUTPUT_HANDLE, NULL }, { STD_ERROR_HANDLE, NULL } };
+        int i;
+
+        for (i = 0; i < 3; i++)
+            aHandles[i].hHandle = GetStdHandle(aHandles[i].uStdHandle);
+
+        for (i = 0; i < 3; i++)
+            if (   aHandles[i].hHandle == NULL
+                || aHandles[i].hHandle == INVALID_HANDLE_VALUE)
+            {
+                int fd = open("nul", _O_RDWR);
+                if (fd >= 0)
+                {
+                    if (_dup2(fd, i) >= 0)
+                    {
+                        assert((HANDLE)_get_osfhandle(i) != aHandles[i].hHandle);
+                        assert((HANDLE)_get_osfhandle(i) == GetStdHandle(aHandles[i].uStdHandle));
+                    }
+                    else
+                        ONNNS(fatal, NILF, "_dup2(%d('nul'), %d) failed: %u (%s)", fd, i, errno, strerror(errno));
+                    if (fd != i)
+                        close(fd);
+                }
+                else
+                    ONNS(fatal, NILF, "open(nul,RW) failed: %u (%s)", i, errno, strerror(errno));
+            }
+            else
+            {
+                int j;
+                for (j = i + 1; j < 3; j++)
+                    if (aHandles[j].hHandle == aHandles[i].hHandle)
+                    {
+                        int fd = _dup(j);
+                        if (fd >= 0)
+                        {
+                            if (_dup2(fd, j) >= 0)
+                            {
+                                aHandles[j].hHandle = (HANDLE)_get_osfhandle(j);
+                                assert(aHandles[j].hHandle != aHandles[i].hHandle);
+                                assert(aHandles[j].hHandle == GetStdHandle(aHandles[j].uStdHandle));
+                            }
+                            else
+                                ONNNS(fatal, NILF, "_dup2(%d, %d) failed: %u (%s)", fd, j, errno, strerror(errno));
+                            if (fd != j)
+                                close(fd);
+                        }
+                        else
+                            ONNS(fatal, NILF, "_dup(%d) failed: %u (%s)", j, errno, strerror(errno));
+                    }
+            }
+    }
+#endif
+}
+
+/**
+ * Create or open a job object for this make instance and its children.
+ *
+ * Depending on the --job-object=mode value, we typically create/open a job
+ * object here if we're the root make instance.  The job object is then
+ * typically configured to kill all remaining processes when the root make
+ * terminates, so that there aren't any stuck processes around messing up
+ * subsequent builds.  This is very handy on build servers.
+ *
+ * If we're it no-kill mode, the job object is pretty pointless for manual
+ * cleanup as the job object becomes invisible (or something) when the last
+ * handle to it closes, i.e. g_hJob.  On windows 8 and later it looks
+ * like any orphaned children are immediately assigned to the parent job
+ * object.  Too bad for kmk_kill and such.
+ *
+ * win_job_object_mode values: login, root, each, none
+ */
+static void mkWinChildInitJobObjectAssociation(void)
+{
+    BOOL        fCreate   = TRUE;
+    char        szJobName[128];
+    const char *pszJobName = win_job_object_name;
+
+    /* Skip if disabled. */
+    if (strcmp(win_job_object_mode, "none") == 0)
+        return;
+
+    /* Skip if not root make instance, unless we're having one job object
+       per make instance. */
+    if (   makelevel != 0
+        && strcmp(win_job_object_mode, "each") != 0)
+        return;
+
+    /* Format the the default job object name if --job-object-name
+       wasn't given. */
+    if (!pszJobName || *pszJobName == '\0')
+    {
+        pszJobName = szJobName;
+        if (strcmp(win_job_object_mode, "login") == 0)
+        {
+            /* Use the AuthenticationId like mspdbsrv.exe does. */
+            HANDLE hToken;
+            if (OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
+            {
+                TOKEN_STATISTICS TokenStats;
+                DWORD            cbRet = 0;
+                memset(&TokenStats, 0, sizeof(TokenStats));
+                if (GetTokenInformation(hToken, TokenStatistics, &TokenStats, sizeof(TokenStats), &cbRet))
+                    snprintf(szJobName, sizeof(szJobName), "kmk-job-obj-login-%08x.%08x",
+                             (unsigned)TokenStats.AuthenticationId.HighPart, (unsigned)TokenStats.AuthenticationId.LowPart);
+                else
+                {
+                    ONN(message, 0, _("GetTokenInformation failed: %u (cbRet=%u)"), GetLastError(), cbRet);
+                    return;
+                }
+                CloseHandle(hToken);
+            }
+            else
+            {
+                ON(message, 0, _("OpenProcessToken failed: %u"), GetLastError());
+                return;
+            }
+        }
+        else
+        {
+            SYSTEMTIME Now = {0};
+            GetSystemTime(&Now);
+            snprintf(szJobName, sizeof(szJobName), "kmk-job-obj-%04u-%02u-%02uT%02u-%02u-%02uZ%u",
+                     Now.wYear, Now.wMonth, Now.wDay, Now.wHour, Now.wMinute, Now.wSecond, getpid());
+        }
+    }
+
+    /* In login mode and when given a job object name, we try open it first. */
+    if (   win_job_object_name
+        || strcmp(win_job_object_mode, "login") == 0)
+    {
+        g_hJob = OpenJobObjectA(JOB_OBJECT_ASSIGN_PROCESS, win_job_object_no_kill /*bInheritHandle*/, pszJobName);
+        if (g_hJob)
+            fCreate = FALSE;
+        else
+        {
+            DWORD dwErr = GetLastError();
+            if (dwErr != ERROR_PATH_NOT_FOUND && dwErr != ERROR_FILE_NOT_FOUND)
+            {
+                OSN(message, 0, _("OpenJobObjectA(,,%s) failed: %u"), pszJobName, GetLastError());
+                return;
+            }
+        }
+    }
+
+    if (fCreate)
+    {
+        SECURITY_ATTRIBUTES SecAttr = { sizeof(SecAttr), NULL, TRUE /*bInheritHandle*/ };
+        g_hJob = CreateJobObjectA(win_job_object_no_kill ? &SecAttr : NULL, pszJobName);
+        if (g_hJob)
+        {
+            /* We need to set the BREAKAWAY_OK flag, as we don't want make CreateProcess
+               fail if someone tries to break way.  Also set KILL_ON_JOB_CLOSE unless
+               --job-object-no-kill is given. */
+            JOBOBJECT_EXTENDED_LIMIT_INFORMATION Info;
+            DWORD cbActual = 0;
+            memset(&Info, 0, sizeof(Info));
+            if (QueryInformationJobObject(g_hJob, JobObjectExtendedLimitInformation, &Info, sizeof(Info), &cbActual))
+            {
+                Info.BasicLimitInformation.LimitFlags |= JOB_OBJECT_LIMIT_BREAKAWAY_OK;
+                if (!win_job_object_no_kill)
+                    Info.BasicLimitInformation.LimitFlags |= JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
+                else
+                    Info.BasicLimitInformation.LimitFlags &= ~JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
+                if (!SetInformationJobObject(g_hJob, JobObjectExtendedLimitInformation, &Info, sizeof(Info)))
+                    OSSN(message, 0, _("SetInformationJobObject(%s,JobObjectExtendedLimitInformation,{%s},) failed: %u"),
+                         pszJobName, win_job_object_mode, GetLastError());
+            }
+            else
+                OSN(message, 0, _("QueryInformationJobObject(%s,JobObjectExtendedLimitInformation,,,) failed: %u"),
+                    pszJobName, GetLastError());
+        }
+        else
+        {
+            OSN(message, 0, _("CreateJobObjectA(NULL,%s) failed: %u"), pszJobName, GetLastError());
+            return;
+        }
+    }
+
+    /* Make it our job object. */
+    if (!(AssignProcessToJobObject(g_hJob, GetCurrentProcess())))
+        OSN(message, 0, _("AssignProcessToJobObject(%s, me) failed: %u"), pszJobName, GetLastError());
+}
+
+/**
+ * Used by mkWinChildcareWorkerThread() and MkWinChildWait() to get the head
+ * child from a lifo (g_pTailCompletedChildren, pTailTodoChildren).
+ *
+ * @returns Head child.
+ * @param   ppTail          Pointer to the child variable.
+ * @param   pChild          Tail child.
+ */
+static PWINCHILD mkWinChildDequeFromLifo(PWINCHILD volatile *ppTail, PWINCHILD pChild)
+{
+    if (pChild->pNext)
+    {
+        PWINCHILD pPrev;
+        do
+        {
+            pPrev = pChild;
+            pChild = pChild->pNext;
+        } while (pChild->pNext);
+        pPrev->pNext = NULL;
+    }
+    else
+    {
+        PWINCHILD const pWantedChild = pChild;
+        pChild = _InterlockedCompareExchangePointer(ppTail, NULL, pWantedChild);
+        if (pChild != pWantedChild)
+        {
+            PWINCHILD pPrev;
+            do
+            {
+                pPrev = pChild;
+                pChild = pChild->pNext;
+            } while (pChild->pNext);
+            pPrev->pNext = NULL;
+            assert(pChild == pWantedChild);
+        }
+    }
+    return pChild;
+}
+
+/**
+ * Output error message while running on a worker thread.
+ *
+ * @returns -1
+ * @param   pWorker             The calling worker.  Mainly for getting the
+ *                              current child and its stderr output unit.  Pass
+ *                              NULL if the output should go thru the child
+ *                              stderr buffering.
+ * @param   iType               The error type:
+ *                                  - 0: more of a info directly to stdout,
+ *                                  - 1: child related error,
+ *                                  - 2: child related error for immedate release.
+ * @param   pszFormat           The message format string.
+ * @param   ...                 Argument for the message.
+ */
+static int MkWinChildError(PWINCHILDCAREWORKER pWorker, int iType, const char *pszFormat, ...)
+{
+    /*
+     * Format the message into stack buffer.
+     */
+    char        szMsg[4096];
+    int         cchMsg;
+    int         cchPrefix;
+    va_list     va;
+
+    /* Compose the prefix, being paranoid about it not exceeding the buffer in any way. */
+    const char *pszInfix = iType == 0 ? "info: " : "error: ";
+    const char *pszProgram = program;
+    if (strlen(pszProgram) > 80)
+    {
+#ifdef KMK
+        pszProgram = "kmk";
+#else
+        pszProgram = "gnumake";
+#endif
+    }
+    if (makelevel == 0)
+        cchPrefix = snprintf(szMsg, sizeof(szMsg) / 2, "%s: %s", pszProgram, pszInfix);
+    else
+        cchPrefix = snprintf(szMsg, sizeof(szMsg) / 2, "%s[%u]: %s", pszProgram, makelevel, pszInfix);
+    assert(cchPrefix < sizeof(szMsg) / 2 && cchPrefix > 0);
+
+    /* Format the user specified message. */
+    va_start(va, pszFormat);
+    cchMsg = vsnprintf(&szMsg[cchPrefix], sizeof(szMsg) - 2 - cchPrefix, pszFormat, va);
+    va_end(va);
+    szMsg[sizeof(szMsg) - 2] = '\0';
+    cchMsg = strlen(szMsg);
+
+    /* Make sure there's a newline at the end of it (we reserved space for that). */
+    if (cchMsg <= 0 || szMsg[cchMsg - 1] != '\n')
+    {
+        szMsg[cchMsg++] = '\n';
+        szMsg[cchMsg]   = '\0';
+    }
+
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+    /*
+     * Try use the stderr of the current child of the worker.
+     */
+    if (   iType != 0
+        && iType != 3
+        && pWorker)
+    {
+        PWINCHILD pChild = pWorker->pCurChild;
+        if (pChild)
+        {
+            struct child *pMkChild = pChild->pMkChild;
+            if (pMkChild)
+            {
+                output_write_text(&pMkChild->output, 1 /*is_err*/, szMsg, cchMsg);
+                return -1;
+            }
+        }
+    }
+#endif
+
+    /*
+     * Fallback to writing directly to stderr.
+     */
+    maybe_con_fwrite(szMsg, cchMsg, 1, iType == 0 ? stdout : stderr);
+    return -1;
+}
+
+/**
+ * Duplicates the given UTF-16 string.
+ *
+ * @returns 0
+ * @param   pwszSrc             The UTF-16 string to duplicate.
+ * @param   cwcSrc              Length, may include the terminator.
+ * @param   ppwszDst            Where to return the duplicate.
+ */
+static int mkWinChildDuplicateUtf16String(const WCHAR *pwszSrc, size_t cwcSrc, WCHAR **ppwszDst)
+{
+    size_t cb = sizeof(WCHAR) * cwcSrc;
+    if (cwcSrc > 0 && pwszSrc[cwcSrc - 1] == L'\0')
+        *ppwszDst = (WCHAR *)memcpy(xmalloc(cb), pwszSrc, cb);
+    else
+    {
+        WCHAR *pwszDst = (WCHAR *)xmalloc(cb + sizeof(WCHAR));
+        memcpy(pwszDst, pwszSrc, cb);
+        pwszDst[cwcSrc] = L'\0';
+        *ppwszDst = pwszDst;
+    }
+    return 0;
+}
+
+
+/**
+ * Used to flush data we're read but not yet written at the termination of a
+ * process.
+ *
+ * @param   pChild          The child.
+ * @param   pPipe           The pipe.
+ */
+static void mkWinChildcareWorkerFlushUnwritten(PWINCHILD pChild, PWINCCWPIPE pPipe)
+{
+    DWORD cbUnwritten = pPipe->offPendingRead - pPipe->cbWritten;
+    assert(pPipe->cbWritten      <= pPipe->cbBuffer - 16);
+    assert(pPipe->offPendingRead <= pPipe->cbBuffer - 16);
+    if (cbUnwritten)
+    {
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+        if (pChild && pChild->pMkChild)
+        {
+            output_write_bin(&pChild->pMkChild->output, pPipe->iWhich == 2, &pPipe->pbBuffer[pPipe->cbWritten], cbUnwritten);
+            pPipe->cbWritten += cbUnwritten;
+        }
+        else
+#endif
+        {
+            DWORD cbWritten = 0;
+            if (WriteFile(GetStdHandle(pPipe->iWhich == 1 ? STD_OUTPUT_HANDLE : STD_ERROR_HANDLE),
+                          &pPipe->pbBuffer[pPipe->cbWritten], cbUnwritten, &cbWritten, NULL))
+                pPipe->cbWritten += cbWritten <= cbUnwritten ? cbWritten : cbUnwritten; /* paranoia */
+        }
+        pPipe->fHaveWrittenOut = TRUE;
+    }
+}
+
+/**
+ * This logic mirrors kwSandboxConsoleFlushAll.
+ *
+ * @returns TRUE if it looks like a CL.EXE source line, otherwise FALSE.
+ * @param   pPipe               The pipe.
+ * @param   offStart            The start of the output in the pipe buffer.
+ * @param   offEnd              The end of the output in the pipe buffer.
+ */
+static BOOL mkWinChildcareWorkerIsClExeSourceLine(PWINCCWPIPE pPipe, DWORD offStart, DWORD offEnd)
+{
+    if (offEnd < offStart + 2)
+        return FALSE;
+    if (offEnd - offStart > 80)
+        return FALSE;
+
+    if (   pPipe->pbBuffer[offEnd - 2] != '\r'
+        || pPipe->pbBuffer[offEnd - 1] != '\n')
+        return FALSE;
+
+    offEnd -= 2;
+    while (offEnd-- > offStart)
+    {
+        char ch = pPipe->pbBuffer[offEnd];
+        if (isalnum(ch) || ch == '.' || ch == ' ' || ch == '_' || ch == '-')
+        { /* likely */ }
+        else
+            return FALSE;
+    }
+
+    return TRUE;
+}
+
+/**
+ * Adds output to the given standard output for the child.
+ *
+ * There is no pending read when this function is called, so we're free to
+ * reshuffle the buffer if desirable.
+ *
+ * @param   pChild          The child. Optional (kSubmit).
+ * @param   iWhich          Which standard descriptor number.
+ * @param   cbNewData       How much more output was caught.
+ */
+static void mkWinChildcareWorkerCaughtMoreOutput(PWINCHILD pChild, PWINCCWPIPE pPipe, DWORD cbNewData)
+{
+    DWORD offStart = pPipe->cbWritten;
+    assert(offStart <= pPipe->offPendingRead);
+    assert(offStart <= pPipe->cbBuffer - 16);
+    assert(pPipe->offPendingRead <= pPipe->cbBuffer - 16);
+    if (cbNewData > 0)
+    {
+        DWORD offRest;
+
+        /* Move offPendingRead ahead by cbRead. */
+        pPipe->offPendingRead += cbNewData;
+        assert(pPipe->offPendingRead <= pPipe->cbBuffer);
+        if (pPipe->offPendingRead > pPipe->cbBuffer)
+            pPipe->offPendingRead = pPipe->cbBuffer;
+
+        /* Locate the last newline in the buffer. */
+        offRest = pPipe->offPendingRead;
+        while (offRest > offStart && pPipe->pbBuffer[offRest - 1] != '\n')
+            offRest--;
+
+        /* If none were found and we've less than 16 bytes left in the buffer, try
+           find a word boundrary to flush on instead. */
+        if (   offRest <= offStart
+            && pPipe->cbBuffer - pPipe->offPendingRead + offStart < 16)
+        {
+            offRest = pPipe->offPendingRead;
+            while (   offRest > offStart
+                   && isalnum(pPipe->pbBuffer[offRest - 1]))
+                offRest--;
+            if (offRest == offStart)
+                offRest = pPipe->offPendingRead;
+        }
+        /* If this is a potential CL.EXE process, we will keep the source
+           filename unflushed and maybe discard it at the end. */
+        else if (   pChild
+                 && pChild->fProbableClExe
+                 && pPipe->iWhich == 1
+                 && offRest == pPipe->offPendingRead
+                 && mkWinChildcareWorkerIsClExeSourceLine(pPipe, offStart, offRest))
+            offRest = offStart;
+
+        if (offRest > offStart)
+        {
+            /* Write out offStart..offRest. */
+            DWORD cbToWrite = offRest - offStart;
+#ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
+            if (pChild && pChild->pMkChild)
+            {
+                output_write_bin(&pChild->pMkChild->output, pPipe->iWhich == 2, &pPipe->pbBuffer[offStart], cbToWrite);
+                offStart += cbToWrite;
+                pPipe->cbWritten = offStart;
+            }
+            else
+#endif
+            {
+                DWORD cbWritten = 0;
+                if (WriteFile(GetStdHandle(pPipe->iWhich == 1 ? STD_OUTPUT_HANDLE : STD_ERROR_HANDLE),
+                              &pPipe->pbBuffer[offStart], cbToWrite, &cbWritten, NULL))
+                {
+                    offStart += cbWritten <= cbToWrite ? cbWritten : cbToWrite; /* paranoia */
+                    pPipe->cbWritten = offStart;
+                }
+            }
+            pPipe->fHaveWrittenOut = TRUE;
+        }
+    }
+
+    /* Shuffle the data to the front of the buffer.  */
+    if (offStart > 0)
+    {
+        DWORD cbUnwritten = pPipe->offPendingRead - offStart;
+        if (cbUnwritten > 0)
+            memmove(pPipe->pbBuffer, &pPipe->pbBuffer[offStart], cbUnwritten);
+        pPipe->offPendingRead -= pPipe->cbWritten;
+        pPipe->cbWritten       = 0;
+    }
+}
+
+/**
+ * Catches output from the given pipe.
+ *
+ * @param   pChild          The child. Optional (kSubmit).
+ * @param   pPipe           The pipe.
+ * @param   fDraining       Set if we're draining the pipe after the process
+ *                          terminated.
+ */
+static void mkWinChildcareWorkerCatchOutput(PWINCHILD pChild, PWINCCWPIPE pPipe, BOOL fDraining)
+{
+    /*
+     * Deal with already pending read.
+     */
+    if (pPipe->fReadPending)
+    {
+        DWORD cbRead = 0;
+        if (GetOverlappedResult(pPipe->hPipeMine, &pPipe->Overlapped, &cbRead, !fDraining))
+        {
+            mkWinChildcareWorkerCaughtMoreOutput(pChild, pPipe, cbRead);
+            pPipe->fReadPending = FALSE;
+        }
+        else if (fDraining && GetLastError() == ERROR_IO_INCOMPLETE)
+            return;
+        else
+        {
+            MkWinChildError(pChild ? pChild->pWorker : NULL, 2, "GetOverlappedResult failed: %u\n", GetLastError());
+            pPipe->fReadPending = FALSE;
+            if (fDraining)
+                return;
+        }
+    }
+
+    /*
+     * Read data till one becomes pending.
+     */
+    for (;;)
+    {
+        DWORD cbRead;
+
+        memset(&pPipe->Overlapped, 0, sizeof(pPipe->Overlapped));
+        pPipe->Overlapped.hEvent = pPipe->hEvent;
+        ResetEvent(pPipe->hEvent);
+
+        assert(pPipe->offPendingRead < pPipe->cbBuffer);
+        SetLastError(0);
+        cbRead = 0;
+        if (!ReadFile(pPipe->hPipeMine, &pPipe->pbBuffer[pPipe->offPendingRead],
+                      pPipe->cbBuffer - pPipe->offPendingRead, &cbRead, &pPipe->Overlapped))
+        {
+            DWORD dwErr = GetLastError();
+            if (dwErr == ERROR_IO_PENDING)
+                pPipe->fReadPending = TRUE;
+            else
+                MkWinChildError(pChild ? pChild->pWorker : NULL, 2,
+                                "ReadFile failed on standard %s: %u\n",
+                                pPipe->iWhich == 1 ? "output" : "error",  GetLastError());
+            return;
+        }
+
+        mkWinChildcareWorkerCaughtMoreOutput(pChild, pPipe, cbRead);
+    }
+}
+
+/**
+ * Makes sure the output pipes are drained and pushed to output.
+ *
+ * @param   pChild              The child. Optional (kSubmit).
+ * @param   pStdOut             The standard output pipe structure.
+ * @param   pStdErr             The standard error pipe structure.
+ */
+void MkWinChildcareWorkerDrainPipes(PWINCHILD pChild, PWINCCWPIPE pStdOut, PWINCCWPIPE pStdErr)
+{
+    mkWinChildcareWorkerCatchOutput(pChild, pStdOut, TRUE /*fDraining*/);
+    mkWinChildcareWorkerCatchOutput(pChild, pStdErr, TRUE /*fDraining*/);
+
+    /* Drop lone 'source.c' line from CL.exe, but only if no other output at all. */
+    if (   pChild
+        && pChild->fProbableClExe
+        && !pStdOut->fHaveWrittenOut
+        && !pStdErr->fHaveWrittenOut
+        && pStdErr->cbWritten == pStdErr->offPendingRead
+        && pStdOut->cbWritten < pStdOut->offPendingRead
+        && mkWinChildcareWorkerIsClExeSourceLine(pStdOut, pStdOut->cbWritten, pStdOut->offPendingRead))
+    {
+        if (!pStdOut->fReadPending)
+            pStdOut->cbWritten = pStdOut->offPendingRead = 0;
+        else
+            pStdOut->cbWritten = pStdOut->offPendingRead;
+    }
+    else
+    {
+        mkWinChildcareWorkerFlushUnwritten(pChild, pStdOut);
+        mkWinChildcareWorkerFlushUnwritten(pChild, pStdErr);
+    }
+}
+
+/**
+ * Commmon worker for waiting on a child process and retrieving the exit code.
+ *
+ * @returns Child exit code.
+ * @param   pWorker             The worker.
+ * @param   pChild              The child.
+ * @param   hProcess            The process handle.
+ * @param   pwszJob             The job name.
+ * @param   fCatchOutput        Set if we need to work the output pipes
+ *                              associated with the worker.
+ */
+static int mkWinChildcareWorkerWaitForProcess(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild, HANDLE hProcess,
+                                              WCHAR const *pwszJob, BOOL fCatchOutput)
+{
+    DWORD const msStart = GetTickCount();
+    DWORD       msNextMsg = msStart + 15000;
+
+    /* Reset the written indicators on the pipes before we start loop. */
+    pWorker->pStdOut->fHaveWrittenOut = FALSE;
+    pWorker->pStdErr->fHaveWrittenOut = FALSE;
+
+    for (;;)
+    {
+        /*
+         * Do the waiting and output catching.
+         */
+        DWORD dwStatus;
+        if (!fCatchOutput)
+            dwStatus = WaitForSingleObject(hProcess, 15001 /*ms*/);
+        else
+        {
+            HANDLE ahHandles[3] = { hProcess, pWorker->pStdOut->hEvent, pWorker->pStdErr->hEvent };
+            dwStatus = WaitForMultipleObjects(3, ahHandles, FALSE /*fWaitAll*/, 1000 /*ms*/);
+            if (dwStatus == WAIT_OBJECT_0 + 1)
+                mkWinChildcareWorkerCatchOutput(pChild, pWorker->pStdOut, FALSE /*fDraining*/);
+            else if (dwStatus == WAIT_OBJECT_0 + 2)
+                mkWinChildcareWorkerCatchOutput(pChild, pWorker->pStdErr, FALSE /*fDraining*/);
+        }
+        assert(dwStatus != WAIT_FAILED);
+
+        /*
+         * Get the exit code and return if the process was signalled as done.
+         */
+        if (dwStatus == WAIT_OBJECT_0)
+        {
+            DWORD dwExitCode = -42;
+            if (GetExitCodeProcess(hProcess, &dwExitCode))
+            {
+                pChild->iExitCode = (int)dwExitCode;
+                if (fCatchOutput)
+                    MkWinChildcareWorkerDrainPipes(pChild, pWorker->pStdOut, pWorker->pStdErr);
+                return dwExitCode;
+            }
+        }
+        /*
+         * Loop again if just a timeout or pending output?
+         * Put out a message every 15 or 30 seconds if the job takes a while.
+         */
+        else if (   dwStatus == WAIT_TIMEOUT
+                 || dwStatus == WAIT_OBJECT_0 + 1
+                 || dwStatus == WAIT_OBJECT_0 + 2
+                 || dwStatus == WAIT_IO_COMPLETION)
+        {
+            DWORD msNow = GetTickCount();
+            if (msNow >= msNextMsg)
+            {
+                if (   !pChild->pMkChild
+                    || !pChild->pMkChild->recursive) /* ignore make recursions */
+                {
+                    if (   !pChild->pMkChild
+                        || !pChild->pMkChild->file
+                        || !pChild->pMkChild->file->name)
+                        MkWinChildError(NULL, 0, "Pid %u ('%ls') still running after %u seconds\n",
+                                        GetProcessId(hProcess), pwszJob, (msNow - msStart) / 1000);
+                    else
+                        MkWinChildError(NULL, 0, "Target '%s' (pid %u) still running after %u seconds\n",
+                                        pChild->pMkChild->file->name, GetProcessId(hProcess), (msNow - msStart) / 1000);
+                }
+
+                /* After 15s, 30s, 60s, 120s, 180s, ... */
+                if (msNextMsg == msStart + 15000)
+                    msNextMsg += 15000;
+                else
+                    msNextMsg += 30000;
+            }
+            continue;
+        }
+
+        /* Something failed. */
+        pChild->iExitCode = GetLastError();
+        if (pChild->iExitCode == 0)
+            pChild->iExitCode = -4242;
+        return pChild->iExitCode;
+    }
+}
+
+
+/**
+ * Closes standard handles that need closing before destruction.
+ *
+ * @param   pChild          The child (WINCHILDTYPE_PROCESS).
+ */
+static void mkWinChildcareWorkerCloseStandardHandles(PWINCHILD pChild)
+{
+    if (   pChild->u.Process.fCloseStdOut
+        && pChild->u.Process.hStdOut != INVALID_HANDLE_VALUE)
+    {
+        CloseHandle(pChild->u.Process.hStdOut);
+        pChild->u.Process.hStdOut      = INVALID_HANDLE_VALUE;
+        pChild->u.Process.fCloseStdOut = FALSE;
+    }
+    if (   pChild->u.Process.fCloseStdErr
+        && pChild->u.Process.hStdErr != INVALID_HANDLE_VALUE)
+    {
+        CloseHandle(pChild->u.Process.hStdErr);
+        pChild->u.Process.hStdErr      = INVALID_HANDLE_VALUE;
+        pChild->u.Process.fCloseStdErr = FALSE;
+    }
+}
+
+
+/**
+ * Does the actual process creation.
+ *
+ * @returns 0 if there is anything to wait on, otherwise non-zero windows error.
+ * @param   pWorker             The childcare worker.
+ * @param   pChild              The child.
+ * @param   pwszImageName       The image path.
+ * @param   pwszCommandLine     The command line.
+ * @param   pwszzEnvironment    The enviornment block.
+ */
+static int mkWinChildcareWorkerCreateProcess(PWINCHILDCAREWORKER pWorker, WCHAR const *pwszImageName,
+                                             WCHAR const *pwszCommandLine, WCHAR const *pwszzEnvironment, WCHAR const *pwszCwd,
+                                             BOOL pafReplace[3], HANDLE pahChild[3], BOOL fCatchOutput, HANDLE *phProcess)
+{
+    PROCESS_INFORMATION ProcInfo;
+    STARTUPINFOW        StartupInfo;
+    DWORD               fFlags       = CREATE_UNICODE_ENVIRONMENT;
+    BOOL const          fHaveHandles = pafReplace[0] | pafReplace[1] | pafReplace[2];
+    BOOL                fRet;
+    DWORD               dwErr;
+#ifdef KMK
+    extern int          process_priority;
+#endif
+
+    /*
+     * Populate startup info.
+     *
+     * Turns out we can get away without passing TRUE for the inherit handles
+     * parameter to CreateProcess when we're not using STARTF_USESTDHANDLES.
+     * At least on NT, which is all worth caring about at this point + context IMO.
+     *
+     * Not inherting the handles is a good thing because it means we won't
+     * accidentally end up with a pipe handle or such intended for a different
+     * child process, potentially causing the EOF/HUP event to be delayed.
+     *
+     * Since the present handle inhertiance requirements only involves standard
+     * output and error, we'll never set the inherit handles flag and instead
+     * do manual handle duplication and planting.
+     */
+    memset(&StartupInfo, 0, sizeof(StartupInfo));
+    StartupInfo.cb = sizeof(StartupInfo);
+    GetStartupInfoW(&StartupInfo);
+    StartupInfo.lpReserved2 = 0; /* No CRT file handle + descriptor info possible, sorry. */
+    StartupInfo.cbReserved2 = 0;
+    if (   !fHaveHandles
+        && !fCatchOutput)
+        StartupInfo.dwFlags &= ~STARTF_USESTDHANDLES;
+    else
+    {
+        fFlags |= CREATE_SUSPENDED;
+        StartupInfo.dwFlags &= ~STARTF_USESTDHANDLES;
+    }
+
+    /*
+     * Flags.
+     */
+#ifdef KMK
+    switch (process_priority)
+    {
+        case 1: fFlags |= CREATE_SUSPENDED | IDLE_PRIORITY_CLASS; break;
+        case 2: fFlags |= CREATE_SUSPENDED | BELOW_NORMAL_PRIORITY_CLASS; break;
+        case 3: fFlags |= CREATE_SUSPENDED | NORMAL_PRIORITY_CLASS; break;
+        case 4: fFlags |= CREATE_SUSPENDED | HIGH_PRIORITY_CLASS; break;
+        case 5: fFlags |= CREATE_SUSPENDED | REALTIME_PRIORITY_CLASS; break;
+    }
+#endif
+    if (g_cProcessorGroups > 1)
+        fFlags |= CREATE_SUSPENDED;
+
+    /*
+     * Try create the process.
+     */
+    DB(DB_JOBS, ("CreateProcessW(%ls, %ls,,, TRUE, %#x...)\n", pwszImageName, pwszCommandLine, fFlags));
+    memset(&ProcInfo, 0, sizeof(ProcInfo));
+#ifdef WITH_RW_LOCK
+    AcquireSRWLockShared(&g_RWLock);
+#endif
+
+    fRet = CreateProcessW((WCHAR *)pwszImageName, (WCHAR *)pwszCommandLine, NULL /*pProcSecAttr*/, NULL /*pThreadSecAttr*/,
+                          FALSE /*fInheritHandles*/, fFlags, (WCHAR *)pwszzEnvironment, pwszCwd, &StartupInfo, &ProcInfo);
+    dwErr = GetLastError();
+
+#ifdef WITH_RW_LOCK
+    ReleaseSRWLockShared(&g_RWLock);
+#endif
+    if (fRet)
+        *phProcess = ProcInfo.hProcess;
+    else
+    {
+        MkWinChildError(pWorker, 1, "CreateProcess(%ls) failed: %u\n", pwszImageName, dwErr);
+        return (int)dwErr;
+    }
+
+    /*
+     * If the child is suspended, we've got some adjustment work to be done.
+     */
+    dwErr = ERROR_SUCCESS;
+    if (fFlags & CREATE_SUSPENDED)
+    {
+        /*
+         * First do handle inhertiance as that's the most complicated.
+         */
+        if (fHaveHandles || fCatchOutput)
+        {
+            char szErrMsg[128];
+            if (fCatchOutput)
+            {
+                if (!pafReplace[1])
+                {
+                    pafReplace[1] = TRUE;
+                    pahChild[1]   = pWorker->pStdOut->hPipeChild;
+                }
+                if (!pafReplace[2])
+                {
+                    pafReplace[2] = TRUE;
+                    pahChild[2]   = pWorker->pStdErr->hPipeChild;
+                }
+            }
+            dwErr = nt_child_inject_standard_handles(ProcInfo.hProcess, pafReplace, pahChild, szErrMsg, sizeof(szErrMsg));
+            if (dwErr != 0)
+                MkWinChildError(pWorker, 1, "%s\n", szErrMsg);
+        }
+
+        /*
+         * Assign processor group (ignore failure).
+         */
+#ifdef MKWINCHILD_DO_SET_PROCESSOR_GROUP
+        if (g_cProcessorGroups > 1)
+        {
+            GROUP_AFFINITY Affinity = { 0 /* == all active apparently */, pWorker->iProcessorGroup, { 0, 0, 0 } };
+            fRet = g_pfnSetThreadGroupAffinity(ProcInfo.hThread, &Affinity, NULL);
+            assert(fRet);
+        }
+#endif
+
+#ifdef KMK
+        /*
+         * Set priority (ignore failure).
+         */
+        switch (process_priority)
+        {
+            case 1: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_IDLE); break;
+            case 2: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_BELOW_NORMAL); break;
+            case 3: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_NORMAL); break;
+            case 4: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_HIGHEST); break;
+            case 5: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_TIME_CRITICAL); break;
+            default: fRet = TRUE;
+        }
+        assert(fRet);
+#endif
+
+        /*
+         * Inject the job object if we're in a non-killing mode, to postpone
+         * the closing of the job object and maybe make it more useful.
+         */
+        if (win_job_object_no_kill && g_hJob)
+        {
+            HANDLE hWhatever = INVALID_HANDLE_VALUE;
+            DuplicateHandle(GetCurrentProcess(), g_hJob, ProcInfo.hProcess, &hWhatever, GENERIC_ALL,
+                            TRUE /*bInheritHandle*/, DUPLICATE_SAME_ACCESS);
+        }
+
+        /*
+         * Resume the thread if the adjustments succeeded, otherwise kill it.
+         */
+        if (dwErr == ERROR_SUCCESS)
+        {
+            fRet = ResumeThread(ProcInfo.hThread);
+            assert(fRet);
+            if (!fRet)
+            {
+                dwErr = GetLastError();
+                MkWinChildError(pWorker, 1, "ResumeThread failed on child process: %u\n", dwErr);
+            }
+        }
+        if (dwErr != ERROR_SUCCESS)
+            TerminateProcess(ProcInfo.hProcess, dwErr);
+    }
+
+    /*
+     * Close unnecessary handles and cache the image.
+     */
+    CloseHandle(ProcInfo.hThread);
+    kmk_cache_exec_image_w(pwszImageName);
+    return 0;
+}
+
+/**
+ * Converts a argument vector that has already been quoted correctly.
+ *
+ * The argument vector is typically the result of quote_argv().
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pWorker             The childcare worker.
+ * @param   papszArgs           The argument vector to convert.
+ * @param   ppwszCommandLine    Where to return the command line.
+ */
+static int mkWinChildcareWorkerConvertQuotedArgvToCommandline(PWINCHILDCAREWORKER pWorker, char **papszArgs,
+                                                              WCHAR **ppwszCommandLine)
+{
+    WCHAR   *pwszCmdLine;
+    WCHAR   *pwszDst;
+
+    /*
+     * Calc length the converted length.
+     */
+    unsigned cwcNeeded = 1;
+    unsigned i = 0;
+    const char *pszSrc;
+    while ((pszSrc = papszArgs[i]) != NULL)
+    {
+        int cwcThis = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, -1, NULL, 0);
+        if (cwcThis > 0 || *pszSrc == '\0')
+            cwcNeeded += cwcThis + 1;
+        else
+        {
+            DWORD dwErr = GetLastError();
+            MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert argv[%u] (%s): %u\n"), i, pszSrc, dwErr);
+            return dwErr;
+        }
+        i++;
+    }
+
+    /*
+     * Allocate and do the conversion.
+     */
+    pwszCmdLine = pwszDst = (WCHAR *)xmalloc(cwcNeeded * sizeof(WCHAR));
+    i = 0;
+    while ((pszSrc = papszArgs[i]) != NULL)
+    {
+        int cwcThis;
+        if (i > 0)
+        {
+            *pwszDst++ = ' ';
+            cwcNeeded--;
+        }
+
+        cwcThis = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, -1, pwszDst, cwcNeeded);
+        if (!cwcThis && *pszSrc != '\0')
+        {
+            DWORD dwErr = GetLastError();
+            MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert argv[%u] (%s): %u\n"), i, pszSrc, dwErr);
+            free(pwszCmdLine);
+            return dwErr;
+        }
+        if (cwcThis > 0 && pwszDst[cwcThis - 1] == '\0')
+            cwcThis--;
+        pwszDst += cwcThis;
+        cwcNeeded -= cwcThis;
+        i++;
+    }
+    *pwszDst++ = '\0';
+
+    *ppwszCommandLine = pwszCmdLine;
+    return 0;
+}
+
+
+#define MKWCCWCMD_F_CYGWIN_SHELL    1
+#define MKWCCWCMD_F_MKS_SHELL       2
+#define MKWCCWCMD_F_HAVE_SH         4
+#define MKWCCWCMD_F_HAVE_KASH_C     8 /**< kmk_ash -c "..." */
+
+/*
+ * @param   pWorker         The childcare worker if on one, otherwise NULL.
+ */
+static int mkWinChildcareWorkerConvertCommandline(PWINCHILDCAREWORKER pWorker, char **papszArgs, unsigned fFlags,
+                                                  WCHAR **ppwszCommandLine)
+{
+    struct ARGINFO
+    {
+        size_t   cchSrc;
+        size_t   cwcDst;           /**< converted size w/o terminator. */
+        size_t   cwcDstExtra : 24; /**< Only set with fSlowly. */
+        size_t   fSlowly     : 1;
+        size_t   fQuoteIt    : 1;
+        size_t   fEndSlashes : 1; /**< if escapes needed for trailing backslashes. */
+        size_t   fExtraSpace : 1; /**< if kash -c "" needs an extra space before the quote. */
+    }     *paArgInfo;
+    size_t cArgs;
+    size_t i;
+    size_t cwcNeeded;
+    WCHAR *pwszDst;
+    WCHAR *pwszCmdLine;
+
+    /*
+     * Count them first so we can allocate an info array of the stack.
+     */
+    cArgs = 0;
+    while (papszArgs[cArgs] != NULL)
+        cArgs++;
+    paArgInfo = (struct ARGINFO *)alloca(sizeof(paArgInfo[0]) * cArgs);
+
+    /*
+     * Preprocess them and calculate the exact command line length.
+     */
+    cwcNeeded = 1;
+    for (i = 0; i < cArgs; i++)
+    {
+        char  *pszSrc = papszArgs[i];
+        size_t cchSrc = strlen(pszSrc);
+        paArgInfo[i].cchSrc = cchSrc;
+        if (cchSrc == 0)
+        {
+            /* empty needs quoting. */
+            paArgInfo[i].cwcDst      = 2;
+            paArgInfo[i].cwcDstExtra = 0;
+            paArgInfo[i].fSlowly     = 0;
+            paArgInfo[i].fQuoteIt    = 1;
+            paArgInfo[i].fExtraSpace = 0;
+            paArgInfo[i].fEndSlashes = 0;
+        }
+        else
+        {
+            const char *pszSpace  = memchr(pszSrc, ' ', cchSrc);
+            const char *pszTab    = memchr(pszSrc, '\t', cchSrc);
+            const char *pszDQuote = memchr(pszSrc, '"', cchSrc);
+            const char *pszEscape = memchr(pszSrc, '\\', cchSrc);
+            int cwcDst = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, cchSrc + 1, NULL, 0);
+            if (cwcDst >= 0)
+                --cwcDst;
+            else
+            {
+                DWORD dwErr = GetLastError();
+                MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert argv[%u] (%s): %u\n"), i, pszSrc, dwErr);
+                return dwErr;
+            }
+#if 0
+            if (!pszSpace && !pszTab && !pszDQuote && !pszEscape)
+            {
+                /* no special handling needed. */
+                paArgInfo[i].cwcDst      = cwcDst;
+                paArgInfo[i].cwcDstExtra = 0;
+                paArgInfo[i].fSlowly     = 0;
+                paArgInfo[i].fQuoteIt    = 0;
+                paArgInfo[i].fExtraSpace = 0;
+                paArgInfo[i].fEndSlashes = 0;
+            }
+            else if (!pszDQuote && !pszEscape)
+            {
+                /* Just double quote it. */
+                paArgInfo[i].cwcDst      = cwcDst + 2;
+                paArgInfo[i].cwcDstExtra = 0;
+                paArgInfo[i].fSlowly     = 0;
+                paArgInfo[i].fQuoteIt    = 1;
+                paArgInfo[i].fExtraSpace = 0;
+                paArgInfo[i].fEndSlashes = 0;
+            }
+            else
+#endif
+            {
+                /* Complicated, need to scan the string to figure out what to do. */
+                size_t cwcDstExtra;
+                int cBackslashes;
+                char ch;
+
+                paArgInfo[i].fQuoteIt    = 0;
+                paArgInfo[i].fSlowly     = 1;
+                paArgInfo[i].fExtraSpace = 0;
+                paArgInfo[i].fEndSlashes = 0;
+
+                cwcDstExtra  = 0;
+                cBackslashes = 0;
+                while ((ch = *pszSrc++) != '\0')
+                {
+                    switch (ch)
+                    {
+                        default:
+                            cBackslashes = 0;
+                            break;
+
+                        case '\\':
+                            cBackslashes++;
+                            break;
+
+                        case '"':
+                            if (fFlags & (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_MKS_SHELL))
+                                cwcDstExtra += 1; /* just an extra '"' */
+                            else
+                                cwcDstExtra += 1 + cBackslashes; /* extra '\\' for the '"' and for each preceeding slash. */
+                            cBackslashes = 0;
+                            break;
+
+                        case ' ':
+                        case '\t':
+                            if (!paArgInfo[i].fQuoteIt)
+                            {
+                                paArgInfo[i].fQuoteIt = 1;
+                                cwcDstExtra += 2;
+                            }
+                            cBackslashes = 0;
+                            break;
+                    }
+                }
+
+                /* If we're quoting the argument and it ends with trailing '\\', it/they must be escaped. */
+                if (   cBackslashes > 0
+                    && paArgInfo[i].fQuoteIt
+                    && !(fFlags & (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_MKS_SHELL)))
+                {
+                    cwcDstExtra += cBackslashes;
+                    paArgInfo[i].fEndSlashes = 1;
+                }
+
+                paArgInfo[i].cwcDst      = cwcDst + cwcDstExtra;
+                paArgInfo[i].cwcDstExtra = cwcDstExtra;
+            }
+        }
+
+        if (   (fFlags & MKWCCWCMD_F_HAVE_KASH_C)
+            && paArgInfo[i].fQuoteIt)
+        {
+            paArgInfo[i].fExtraSpace = 1;
+            paArgInfo[i].cwcDst++;
+            paArgInfo[i].cwcDstExtra++;
+        }
+
+        cwcNeeded += (i != 0) + paArgInfo[i].cwcDst;
+    }
+
+    /*
+     * Allocate the result buffer and do the actual conversion.
+     */
+    pwszDst = pwszCmdLine = (WCHAR *)xmalloc(sizeof(WCHAR) * cwcNeeded);
+    for (i = 0; i < cArgs; i++)
+    {
+        char  *pszSrc = papszArgs[i];
+        size_t cwcDst = paArgInfo[i].cwcDst;
+
+        if (i != 0)
+            *pwszDst++ = L' ';
+
+        if (paArgInfo[i].fQuoteIt)
+        {
+            *pwszDst++ = L'"';
+            cwcDst -= 2;
+        }
+
+        if (!paArgInfo[i].fSlowly)
+        {
+            int cwcDst2 = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, paArgInfo[i].cchSrc, pwszDst, cwcDst + 1);
+            assert(cwcDst2 >= 0);
+            pwszDst += cwcDst;
+        }
+        else
+        {
+            /* Do the conversion into the end of the output buffer, then move
+               it up to where it should be char by char.  */
+            int             cBackslashes;
+            size_t          cwcLeft     = paArgInfo[i].cwcDst - paArgInfo[i].cwcDstExtra;
+            WCHAR volatile *pwchSlowSrc = pwszDst + paArgInfo[i].cwcDstExtra;
+            WCHAR volatile *pwchSlowDst = pwszDst;
+            int cwcDst2 = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, paArgInfo[i].cchSrc,
+                                              (WCHAR *)pwchSlowSrc, cwcLeft + 1);
+            assert(cwcDst2 >= 0);
+
+            cBackslashes = 0;
+            while (cwcLeft-- > 0)
+            {
+                WCHAR wcSrc = *pwchSlowSrc++;
+                if (wcSrc != L'\\' && wcSrc != L'"')
+                    cBackslashes = 0;
+                else if (wcSrc == L'\\')
+                    cBackslashes++;
+                else if (   (fFlags & (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_HAVE_SH))
+                         ==           (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_HAVE_SH))
+                {
+                    *pwchSlowDst++ = L'"'; /* cygwin: '"' instead of '\\', no escaped slashes. */
+                    cBackslashes = 0;
+                }
+                else
+                {
+                    if (!(fFlags & (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_MKS_SHELL)))
+                        cBackslashes += 1; /* one extra escape the '"' and one for each preceeding slash. */
+                    while (cBackslashes > 0)
+                    {
+                        *pwchSlowDst++ = L'\\';
+                        cBackslashes--;
+                    }
+                }
+                *pwchSlowDst++ = wcSrc;
+                assert((uintptr_t)pwchSlowDst <= (uintptr_t)pwchSlowSrc);
+            }
+
+            if (paArgInfo[i].fEndSlashes)
+                while (cBackslashes-- > 0)
+                    *pwchSlowDst++ = L'\\';
+
+            pwszDst += cwcDst;
+            assert(pwszDst == (WCHAR *)pwchSlowDst);
+        }
+
+        if (paArgInfo[i].fExtraSpace)
+            *pwszDst++ = L' ';
+        if (paArgInfo[i].fQuoteIt)
+            *pwszDst++ = L'"';
+    }
+    *pwszDst = L'\0';
+    *ppwszCommandLine = pwszCmdLine;
+    return 0;
+}
+
+static int mkWinChildcareWorkerConvertCommandlineWithShell(PWINCHILDCAREWORKER pWorker, const WCHAR *pwszShell, char **papszArgs,
+                                                           WCHAR **ppwszCommandLine)
+{
+    MkWinChildError(pWorker, 1, "%s: not found!\n", papszArgs[0]);
+//__debugbreak();
+    return ERROR_FILE_NOT_FOUND;
+}
+
+/**
+ * Searches the environment block for the PATH variable.
+ *
+ * @returns Pointer to the path in the block or "." in pwszPathFallback.
+ * @param   pwszzEnv            The UTF-16 environment block to search.
+ * @param   pwszPathFallback    Fallback.
+ */
+static const WCHAR *mkWinChildcareWorkerFindPathValue(const WCHAR *pwszzEnv, WCHAR pwszPathFallback[4])
+{
+    while (*pwszzEnv)
+    {
+        size_t cwcVar = wcslen(pwszzEnv);
+        if (!IS_PATH_ENV_VAR(cwcVar, pwszzEnv))
+            pwszzEnv += cwcVar + 1;
+        else if (cwcVar > 5)
+            return &pwszzEnv[5];
+        else
+            break;
+    }
+    pwszPathFallback[0] = L'.';
+    pwszPathFallback[1] = L'\0';
+    return pwszPathFallback;
+}
+
+/**
+ * Checks if we need to had this executable file to the shell.
+ *
+ * @returns TRUE if it's shell fooder, FALSE if we think windows can handle it.
+ * @param   hFile               Handle to the file in question
+ */
+static BOOL mkWinChildcareWorkerCheckIfNeedShell(HANDLE hFile)
+{
+    /*
+     * Read the first 512 bytes and check for an executable image header.
+     */
+    union
+    {
+        DWORD dwSignature;
+        WORD  wSignature;
+        BYTE  ab[128];
+    } uBuf;
+    DWORD cbRead;
+    uBuf.dwSignature = 0;
+    if (   ReadFile(hFile, &uBuf, sizeof(uBuf), &cbRead, NULL /*pOverlapped*/)
+        && cbRead == sizeof(uBuf))
+    {
+        if (uBuf.wSignature == IMAGE_DOS_SIGNATURE)
+            return FALSE;
+        if (uBuf.dwSignature == IMAGE_NT_SIGNATURE)
+            return FALSE;
+        if (   uBuf.wSignature == IMAGE_OS2_SIGNATURE    /* NE */
+            || uBuf.wSignature == 0x5d4c                 /* LX */
+            || uBuf.wSignature == IMAGE_OS2_SIGNATURE_LE /* LE */)
+            return FALSE;
+    }
+    return TRUE;
+}
+
+/**
+ * Checks if the image path looks like microsoft CL.exe.
+ *
+ * @returns TRUE / FALSE.
+ * @param   pwszImagePath   The executable image path to evalutate.
+ * @param   cwcImagePath    The length of the image path.
+ */
+static BOOL mkWinChildIsProbableClExe(WCHAR const *pwszImagePath, size_t cwcImagePath)
+{
+    assert(pwszImagePath[cwcImagePath] == '\0');
+    return cwcImagePath > 7
+        && (pwszImagePath[cwcImagePath - 7] == L'/' || pwszImagePath[cwcImagePath - 7] == L'\\')
+        && (pwszImagePath[cwcImagePath - 6] == L'c' || pwszImagePath[cwcImagePath - 6] == L'C')
+        && (pwszImagePath[cwcImagePath - 5] == L'l' || pwszImagePath[cwcImagePath - 5] == L'L')
+        &&  pwszImagePath[cwcImagePath - 4] == L'.'
+        && (pwszImagePath[cwcImagePath - 3] == L'e' || pwszImagePath[cwcImagePath - 3] == L'E')
+        && (pwszImagePath[cwcImagePath - 2] == L'x' || pwszImagePath[cwcImagePath - 2] == L'X')
+        && (pwszImagePath[cwcImagePath - 1] == L'e' || pwszImagePath[cwcImagePath - 1] == L'E');
+}
+
+/**
+ * Temporary workaround for seemingly buggy kFsCache.c / dir-nt-bird.c.
+ *
+ * Something is not invalidated / updated correctly!
+ */
+static BOOL mkWinChildcareWorkerIsRegularFileW(PWINCHILDCAREWORKER pWorker, wchar_t const *pwszPath)
+{
+    BOOL fRet = FALSE;
+#ifdef KMK
+    if (utf16_regular_file_p(pwszPath))
+        fRet = TRUE;
+    else
+#endif
+    {
+        /* Don't believe the cache. */
+        DWORD dwAttr = GetFileAttributesW(pwszPath);
+        if (dwAttr != INVALID_FILE_ATTRIBUTES)
+        {
+            if (!(dwAttr & FILE_ATTRIBUTE_DIRECTORY))
+            {
+#ifdef KMK
+                extern void dir_cache_invalid_volatile(void);
+                dir_cache_invalid_volatile();
+                if (utf16_regular_file_p(pwszPath))
+                    MkWinChildError(pWorker, 1, "kFsCache was out of sync! pwszPath=%S\n", pwszPath);
+                else
+                {
+                    dir_cache_invalid_all();
+                    if (utf16_regular_file_p(pwszPath))
+                        MkWinChildError(pWorker, 1, "kFsCache was really out of sync! pwszPath=%S\n", pwszPath);
+                    else
+                        MkWinChildError(pWorker, 1, "kFsCache is really out of sync!! pwszPath=%S\n", pwszPath);
+                }
+#endif
+                fRet = TRUE;
+            }
+        }
+    }
+    return fRet;
+}
+
+
+/**
+ * Tries to locate the image file, searching the path and maybe falling back on
+ * the shell in case it knows more (think cygwin with its own view of the file
+ * system).
+ *
+ * This will also check for shell script, falling back on the shell too to
+ * handle those.
+ *
+ * @returns 0 on success, windows error code on failure.
+ * @param   pWorker         The childcare worker.
+ * @param   pszArg0         The first argument.
+ * @param   pwszSearchPath  In case mkWinChildcareWorkerConvertEnvironment
+ *                          had a chance of locating the search path already.
+ * @param   pwszzEnv        The environment block, in case we need to look for
+ *                          the path.
+ * @param   pszShell        The shell.
+ * @param   ppwszImagePath  Where to return the pointer to the image path.  This
+ *                          could be the shell.
+ * @param   pfNeedShell     Where to return shell vs direct execution indicator.
+ * @param   pfProbableClExe Where to return an indicator of probably CL.EXE.
+ */
+static int mkWinChildcareWorkerFindImage(PWINCHILDCAREWORKER pWorker, char const *pszArg0, WCHAR *pwszSearchPath,
+                                         WCHAR const *pwszzEnv, const char *pszShell,
+                                         WCHAR **ppwszImagePath, BOOL *pfNeedShell, BOOL *pfProbableClExe)
+{
+    /** @todo Slap a cache on this code. We usually end up executing the same
+     *        stuff over and over again (e.g. compilers, linkers, etc).
+     *        Hitting the file system is slow on windows. */
+
+    /*
+     * Convert pszArg0 to unicode so we can work directly on that.
+     */
+    WCHAR     wszArg0[MKWINCHILD_MAX_PATH + 4]; /* +4 for painless '.exe' appending */
+    DWORD     dwErr;
+    size_t    cbArg0  = strlen(pszArg0) + 1;
+    int const cwcArg0 = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszArg0, cbArg0, wszArg0, MKWINCHILD_MAX_PATH);
+    if (cwcArg0 > 0)
+    {
+        HANDLE hFile = INVALID_HANDLE_VALUE;
+        WCHAR  wszPathBuf[MKWINCHILD_MAX_PATH + 4]; /* +4 for painless '.exe' appending */
+        int    cwc;
+
+        /*
+         * If there isn't an .exe suffix, we may have to add one.
+         * Also we ASSUME that .exe suffixes means no hash bang detection needed.
+         */
+        int const fHasExeSuffix = cwcArg0 > CSTRLEN(".exe")
+                               &&  wszArg0[cwcArg0 - 4] == '.'
+                               && (wszArg0[cwcArg0 - 3] == L'e' || wszArg0[cwcArg0 - 3] == L'E')
+                               && (wszArg0[cwcArg0 - 2] == L'x' || wszArg0[cwcArg0 - 2] == L'X')
+                               && (wszArg0[cwcArg0 - 1] == L'e' || wszArg0[cwcArg0 - 1] == L'E');
+
+        /*
+         * If there isn't any path specified, we need to search the PATH env.var.
+         */
+        int const fHasPath =  wszArg0[1] == L':'
+                           || wszArg0[0] == L'\\'
+                           || wszArg0[0] == L'/'
+                           || wmemchr(wszArg0, L'/', cwcArg0)
+                           || wmemchr(wszArg0, L'\\', cwcArg0);
+
+        /* Before we do anything, flip UNIX slashes to DOS ones. */
+        WCHAR *pwc = wszArg0;
+        while ((pwc = wcschr(pwc, L'/')) != NULL)
+            *pwc++ = L'\\';
+
+        /* Don't need to set these all the time... */
+        *pfNeedShell = FALSE;
+        *pfProbableClExe = FALSE;
+
+        /*
+         * If any kind of path is specified in arg0, we will not search the
+         * PATH env.var and can limit ourselves to maybe slapping a .exe on to it.
+         */
+        if (fHasPath)
+        {
+            /*
+             * If relative to a CWD, turn it into an absolute one.
+             */
+            unsigned  cwcPath  = cwcArg0;
+            WCHAR    *pwszPath = wszArg0;
+            if (   *pwszPath != L'\\'
+                && (pwszPath[1] != ':' || pwszPath[2] != L'\\') )
+            {
+                DWORD cwcAbsPath = GetFullPathNameW(wszArg0, MKWINCHILD_MAX_PATH, wszPathBuf, NULL);
+                if (cwcAbsPath > 0)
+                {
+                    cwcPath  = cwcAbsPath + 1; /* include terminator, like MultiByteToWideChar does. */
+                    pwszPath = wszPathBuf;
+                }
+            }
+
+            /*
+             * Check with .exe suffix first.
+             * We don't open .exe files and look for hash bang stuff, we just
+             * assume they are executable images that CreateProcess can deal with.
+             */
+            if (!fHasExeSuffix)
+            {
+                pwszPath[cwcPath - 1] = L'.';
+                pwszPath[cwcPath    ] = L'e';
+                pwszPath[cwcPath + 1] = L'x';
+                pwszPath[cwcPath + 2] = L'e';
+                pwszPath[cwcPath + 3] = L'\0';
+            }
+
+            if (mkWinChildcareWorkerIsRegularFileW(pWorker, pwszPath))
+            {
+                *pfProbableClExe = mkWinChildIsProbableClExe(pwszPath, cwcPath + 4 - 1);
+                return mkWinChildDuplicateUtf16String(pwszPath, cwcPath + 4, ppwszImagePath);
+            }
+
+            /*
+             * If no suffix was specified, try without .exe too, but now we need
+             * to see if it's for the shell or CreateProcess.
+             */
+            if (!fHasExeSuffix)
+            {
+                pwszPath[cwcPath - 1] = L'\0';
+#ifdef KMK
+                if (mkWinChildcareWorkerIsRegularFileW(pWorker, pwszPath))
+#endif
+                {
+                    hFile = CreateFileW(pwszPath, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_DELETE | FILE_SHARE_WRITE,
+                                        NULL /*pSecAttr*/, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+                    if (hFile != INVALID_HANDLE_VALUE)
+                    {
+                        *pfNeedShell = mkWinChildcareWorkerCheckIfNeedShell(hFile);
+                        CloseHandle(hFile);
+                        if (!*pfNeedShell)
+                        {
+                            *pfProbableClExe = mkWinChildIsProbableClExe(pwszPath, cwcPath - 1);
+                            return mkWinChildDuplicateUtf16String(pwszPath, cwcPath, ppwszImagePath);
+                        }
+                    }
+                }
+            }
+        }
+        /*
+         * No path, need to search the PATH env.var. for the executable, maybe
+         * adding an .exe suffix while do so if that is missing.
+         */
+        else
+        {
+            BOOL  fSearchedCwd = FALSE;
+            WCHAR wszPathFallback[4];
+            if (!pwszSearchPath)
+                pwszSearchPath = (WCHAR *)mkWinChildcareWorkerFindPathValue(pwszzEnv, wszPathFallback);
+
+            for (;;)
+            {
+                size_t cwcCombined;
+
+                /*
+                 * Find the end of the current PATH component.
+                 */
+                size_t cwcSkip;
+                WCHAR  wcEnd;
+                size_t cwcComponent = 0;
+                WCHAR  wc;
+                while ((wc = pwszSearchPath[cwcComponent]) != L'\0')
+                {
+                    if (wc != ';' && wc != ':')
+                    { /* likely */ }
+                    else if (wc == ';')
+                        break;
+                    else if (cwcComponent != (pwszSearchPath[cwcComponent] != L'"' ? 1 : 2))
+                        break;
+                   cwcComponent++;
+                }
+                wcEnd = wc;
+
+                /* Trim leading spaces and double quotes. */
+                while (   cwcComponent > 0
+                       && ((wc = *pwszSearchPath) == L'"' || wc == L' ' || wc == L'\t'))
+                {
+                    pwszSearchPath++;
+                    cwcComponent--;
+                }
+                cwcSkip = cwcComponent;
+
+                /* Trim trailing spaces & double quotes. */
+                while (   cwcComponent > 0
+                       && ((wc = pwszSearchPath[cwcComponent - 1]) == L'"' || wc == L' ' || wc == L'\t'))
+                    cwcComponent--;
+
+                /*
+                 * Skip empty components.  Join the component and the filename, making sure to
+                 * resolve any CWD relative stuff first.
+                 */
+                cwcCombined = cwcComponent + 1 + cwcArg0;
+                if (cwcComponent > 0 && cwcCombined <= MKWINCHILD_MAX_PATH)
+                {
+                    /* Copy the component into wszPathBuf, maybe abspath'ing it. */
+                    DWORD  cwcAbsPath = 0;
+                    if (   *pwszSearchPath != L'\\'
+                        && (pwszSearchPath[1] != ':' || pwszSearchPath[2] != L'\\') )
+                    {
+                        /* To save an extra buffer + copying, we'll temporarily modify the PATH
+                           value in our converted UTF-16 environment block.  */
+                        WCHAR const wcSaved = pwszSearchPath[cwcComponent];
+                        pwszSearchPath[cwcComponent] = L'\0';
+                        cwcAbsPath = GetFullPathNameW(pwszSearchPath, MKWINCHILD_MAX_PATH, wszPathBuf, NULL);
+                        pwszSearchPath[cwcComponent] = wcSaved;
+                        if (cwcAbsPath > 0 && cwcAbsPath + 1 + cwcArg0 <= MKWINCHILD_MAX_PATH)
+                            cwcCombined = cwcAbsPath + 1 + cwcArg0;
+                        else
+                            cwcAbsPath = 0;
+                    }
+                    if (cwcAbsPath == 0)
+                    {
+                        memcpy(wszPathBuf, pwszSearchPath, cwcComponent * sizeof(WCHAR));
+                        cwcAbsPath = cwcComponent;
+                    }
+
+                    /* Append the filename. */
+                    if ((wc = wszPathBuf[cwcAbsPath - 1]) == L'\\' || wc == L'/' || wc == L':')
+                    {
+                        memcpy(&wszPathBuf[cwcAbsPath], wszArg0, cwcArg0 * sizeof(WCHAR));
+                        cwcCombined--;
+                    }
+                    else
+                    {
+                        wszPathBuf[cwcAbsPath] = L'\\';
+                        memcpy(&wszPathBuf[cwcAbsPath + 1], wszArg0, cwcArg0 * sizeof(WCHAR));
+                    }
+                    assert(wszPathBuf[cwcCombined - 1] == L'\0');
+
+                    /* DOS slash conversion */
+                    pwc = wszPathBuf;
+                    while ((pwc = wcschr(pwc, L'/')) != NULL)
+                        *pwc++ = L'\\';
+
+                    /*
+                     * Search with exe suffix first.
+                     */
+                    if (!fHasExeSuffix)
+                    {
+                        wszPathBuf[cwcCombined - 1] = L'.';
+                        wszPathBuf[cwcCombined    ] = L'e';
+                        wszPathBuf[cwcCombined + 1] = L'x';
+                        wszPathBuf[cwcCombined + 2] = L'e';
+                        wszPathBuf[cwcCombined + 3] = L'\0';
+                    }
+                    if (mkWinChildcareWorkerIsRegularFileW(pWorker, wszPathBuf))
+                    {
+                        *pfProbableClExe = mkWinChildIsProbableClExe(wszPathBuf, cwcCombined + (fHasExeSuffix ? 0 : 4) - 1);
+                        return mkWinChildDuplicateUtf16String(wszPathBuf, cwcCombined + (fHasExeSuffix ? 0 : 4), ppwszImagePath);
+                    }
+                    if (!fHasExeSuffix)
+                    {
+                        wszPathBuf[cwcCombined - 1] = L'\0';
+#ifdef KMK
+                        if (mkWinChildcareWorkerIsRegularFileW(pWorker, wszPathBuf))
+#endif
+                        {
+                            /*
+                             * Check if the file exists w/o the added '.exe' suffix.  If it does,
+                             * we need to check if we can pass it to CreateProcess or need the shell.
+                             */
+                            hFile = CreateFileW(wszPathBuf, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_DELETE | FILE_SHARE_WRITE,
+                                                NULL /*pSecAttr*/, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+                            if (hFile != INVALID_HANDLE_VALUE)
+                            {
+                                *pfNeedShell = mkWinChildcareWorkerCheckIfNeedShell(hFile);
+                                CloseHandle(hFile);
+                                if (!*pfNeedShell)
+                                {
+                                    *pfProbableClExe = mkWinChildIsProbableClExe(wszPathBuf, cwcCombined - 1);
+                                    return mkWinChildDuplicateUtf16String(wszPathBuf, cwcCombined, ppwszImagePath);
+                                }
+                                break;
+                            }
+                        }
+                    }
+                }
+
+                /*
+                 * Advance to the next component.
+                 */
+                if (wcEnd != '\0')
+                    pwszSearchPath += cwcSkip + 1;
+                else if (fSearchedCwd)
+                    break;
+                else
+                {
+                    fSearchedCwd = TRUE;
+                    wszPathFallback[0] = L'.';
+                    wszPathFallback[1] = L'\0';
+                    pwszSearchPath = wszPathFallback;
+                }
+            }
+        }
+
+        /*
+         * We need the shell.  It will take care of finding/reporting missing
+         * image files and such.
+         */
+        *pfNeedShell = TRUE;
+        if (pszShell)
+        {
+            cwc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszShell, strlen(pszShell) + 1, wszPathBuf, MKWINCHILD_MAX_PATH);
+            if (cwc > 0)
+                return mkWinChildDuplicateUtf16String(wszPathBuf, cwc, ppwszImagePath);
+            dwErr = GetLastError();
+            MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert shell (%s): %u\n"), pszShell, dwErr);
+        }
+        else
+        {
+            MkWinChildError(pWorker, 1, "%s: not found!\n", pszArg0);
+            dwErr = ERROR_FILE_NOT_FOUND;
+        }
+    }
+    else
+    {
+        dwErr = GetLastError();
+        MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert argv[0] (%s): %u\n"), pszArg0, dwErr);
+    }
+    return dwErr == ERROR_INSUFFICIENT_BUFFER ? ERROR_FILENAME_EXCED_RANGE : dwErr;
+}
+
+/**
+ * Creates the environment block.
+ *
+ * @returns 0 on success, windows error code on failure.
+ * @param   pWorker         The childcare worker if on one, otherwise NULL.
+ * @param   papszEnv        The environment vector to convert.
+ * @param   cbEnvStrings    The size of the environment strings, iff they are
+ *                          sequential in a block.  Otherwise, zero.
+ * @param   ppwszEnv        Where to return the pointer to the environment
+ *                          block.
+ * @param   ppwszSearchPath Where to return the pointer to the path value
+ *                          within the environment block.  This will not be set
+ *                          if cbEnvStrings is non-zero, more efficient to let
+ *                          mkWinChildcareWorkerFindImage() search when needed.
+ */
+static int mkWinChildcareWorkerConvertEnvironment(PWINCHILDCAREWORKER pWorker, char **papszEnv, size_t cbEnvStrings,
+                                                  WCHAR **ppwszEnv, WCHAR const **ppwszSearchPath)
+{
+    DWORD  dwErr;
+    int    cwcRc;
+    int    cwcDst;
+    WCHAR *pwszzDst;
+
+    *ppwszSearchPath = NULL;
+
+    /*
+     * We've got a little optimization here with help from mkWinChildCopyStringArray.
+     */
+    if (cbEnvStrings)
+    {
+        cwcDst = cbEnvStrings + 32;
+        pwszzDst = (WCHAR *)xmalloc(cwcDst * sizeof(WCHAR));
+        cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, papszEnv[0], cbEnvStrings, pwszzDst, cwcDst);
+        if (cwcRc != 0)
+        {
+            *ppwszEnv = pwszzDst;
+            return 0;
+        }
+
+        /* Resize the allocation and try again. */
+        dwErr = GetLastError();
+        if (dwErr == ERROR_INSUFFICIENT_BUFFER)
+        {
+            cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, papszEnv[0], cbEnvStrings, NULL, 0);
+            if (cwcRc > 0)
+                cwcDst = cwcRc + 32;
+            else
+                cwcDst *= 2;
+            pwszzDst = (WCHAR *)xrealloc(pwszzDst, cwcDst);
+            cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, papszEnv[0], cbEnvStrings, pwszzDst, cwcDst);
+            if (cwcRc != 0)
+            {
+                *ppwszEnv = pwszzDst;
+                return 0;
+            }
+            dwErr = GetLastError();
+        }
+        MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert environment block: %u\n"), dwErr);
+    }
+    /*
+     * Need to convert it string by string.
+     */
+    else
+    {
+        size_t offPathValue = ~(size_t)0;
+        size_t offDst;
+
+        /*
+         * Estimate the size first.
+         */
+        size_t      cEnvVars;
+        size_t      cwcDst = 32;
+        size_t      iVar   = 0;
+        const char *pszSrc;
+        while ((pszSrc = papszEnv[iVar]) != NULL)
+        {
+            cwcDst += strlen(pszSrc) + 1;
+            iVar++;
+        }
+        cEnvVars = iVar;
+
+        /* Allocate estimated WCHARs and convert the variables one by one, reallocating
+           the block as needed. */
+        pwszzDst = (WCHAR *)xmalloc(cwcDst * sizeof(WCHAR));
+        cwcDst--; /* save one wchar for the terminating empty string. */
+        offDst = 0;
+        for (iVar = 0; iVar < cEnvVars; iVar++)
+        {
+            size_t       cwcLeft = cwcDst - offDst;
+            size_t const cbSrc   = strlen(pszSrc = papszEnv[iVar]) + 1;
+            assert(cwcDst >= offDst);
+
+
+            cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, cbSrc, &pwszzDst[offDst], cwcLeft);
+            if (cwcRc > 0)
+            { /* likely */ }
+            else
+            {
+                dwErr = GetLastError();
+                if (dwErr == ERROR_INSUFFICIENT_BUFFER)
+                {
+                    /* Need more space.  So, calc exacly how much and resize the block accordingly. */
+                    size_t cbSrc2 = cbSrc;
+                    size_t iVar2  = iVar;
+                    cwcLeft = 1;
+                    for (;;)
+                    {
+                        size_t cwcRc2 = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, cbSrc, NULL, 0);
+                        if (cwcRc2 > 0)
+                            cwcLeft += cwcRc2;
+                        else
+                            cwcLeft += cbSrc * 4;
+
+                        /* advance */
+                        iVar2++;
+                        if (iVar2 >= cEnvVars)
+                            break;
+                        pszSrc = papszEnv[iVar2];
+                        cbSrc2 = strlen(pszSrc) + 1;
+                    }
+                    pszSrc = papszEnv[iVar];
+
+                    /* Grow the allocation and repeat the conversion. */
+                    if (offDst + cwcLeft > cwcDst + 1)
+                    {
+                        cwcDst   = offDst + cwcLeft;
+                        pwszzDst = (WCHAR *)xrealloc(pwszzDst, cwcDst * sizeof(WCHAR));
+                        cwcDst--; /* save one wchar for the terminating empty string. */
+                        cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, cbSrc, &pwszzDst[offDst], cwcLeft - 1);
+                        if (cwcRc <= 0)
+                            dwErr = GetLastError();
+                    }
+                }
+                if (cwcRc <= 0)
+                {
+                    MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert environment string #%u (%s): %u\n"),
+                                    iVar, pszSrc, dwErr);
+                    free(pwszzDst);
+                    return dwErr;
+                }
+            }
+
+            /* Look for the PATH. */
+            if (   offPathValue == ~(size_t)0
+                && IS_PATH_ENV_VAR(cwcRc, &pwszzDst[offDst]) )
+                offPathValue = offDst + 4 + 1;
+
+            /* Advance. */
+            offDst += cwcRc;
+        }
+        pwszzDst[offDst++] = '\0';
+
+        if (offPathValue != ~(size_t)0)
+            *ppwszSearchPath = &pwszzDst[offPathValue];
+        *ppwszEnv = pwszzDst;
+        return 0;
+    }
+    free(pwszzDst);
+    return dwErr;
+}
+
+/**
+ * Childcare worker: handle regular process.
+ *
+ * @param   pWorker             The worker.
+ * @param   pChild              The kSubmit child.
+ */
+static void mkWinChildcareWorkerThreadHandleProcess(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
+{
+    WCHAR  *pwszSearchPath   = NULL;
+    WCHAR  *pwszzEnvironment = NULL;
+    WCHAR  *pwszCommandLine  = NULL;
+    WCHAR  *pwszImageName    = NULL;
+    BOOL    fNeedShell       = FALSE;
+    BOOL    fProbableClExe   = FALSE;
+    int     rc;
+
+    /*
+     * First we convert the environment so we get the PATH we need to
+     * search for the executable.
+     */
+    rc = mkWinChildcareWorkerConvertEnvironment(pWorker, pChild->u.Process.papszEnv ? pChild->u.Process.papszEnv : environ,
+                                                pChild->u.Process.cbEnvStrings,
+                                                &pwszzEnvironment, &pwszSearchPath);
+    /*
+     * Find the executable and maybe checking if it's a shell script, then
+     * convert it to a command line.
+     */
+    if (rc == 0)
+        rc = mkWinChildcareWorkerFindImage(pWorker, pChild->u.Process.papszArgs[0], pwszSearchPath, pwszzEnvironment,
+                                           pChild->u.Process.pszShell, &pwszImageName, &fNeedShell, &pChild->fProbableClExe);
+    if (rc == 0)
+    {
+        if (!fNeedShell)
+            rc = mkWinChildcareWorkerConvertCommandline(pWorker, pChild->u.Process.papszArgs, 0 /*fFlags*/, &pwszCommandLine);
+        else
+            rc = mkWinChildcareWorkerConvertCommandlineWithShell(pWorker, pwszImageName, pChild->u.Process.papszArgs,
+                                                                 &pwszCommandLine);
+
+        /*
+         * Create the child process.
+         */
+        if (rc == 0)
+        {
+            BOOL afReplace[3] = { FALSE, pChild->u.Process.hStdOut != INVALID_HANDLE_VALUE, pChild->u.Process.hStdErr != INVALID_HANDLE_VALUE };
+            HANDLE ahChild[3] = { INVALID_HANDLE_VALUE, pChild->u.Process.hStdOut, pChild->u.Process.hStdErr };
+            rc = mkWinChildcareWorkerCreateProcess(pWorker, pwszImageName, pwszCommandLine, pwszzEnvironment,
+                                                   NULL /*pwszCwd*/, afReplace, ahChild, pChild->u.Process.fCatchOutput,
+                                                   &pChild->u.Process.hProcess);
+            mkWinChildcareWorkerCloseStandardHandles(pChild);
+            if (rc == 0)
+            {
+                /*
+                 * Wait for the child to complete.
+                 */
+                mkWinChildcareWorkerWaitForProcess(pWorker, pChild, pChild->u.Process.hProcess, pwszImageName,
+                                                   pChild->u.Process.fCatchOutput);
+            }
+            else
+                pChild->iExitCode = rc;
+        }
+        else
+            pChild->iExitCode = rc;
+    }
+    else
+        pChild->iExitCode = rc;
+    free(pwszCommandLine);
+    free(pwszImageName);
+    free(pwszzEnvironment);
+
+    /* In case we failed, we must make sure the child end of pipes
+       used by $(shell no_such_command.exe) are closed, otherwise
+       the main thread will be stuck reading the parent end.  */
+    mkWinChildcareWorkerCloseStandardHandles(pChild);
+}
+
+#ifdef KMK
+
+/**
+ * Childcare worker: handle builtin command.
+ *
+ * @param   pWorker             The worker.
+ * @param   pChild              The kSubmit child.
+ */
+static void mkWinChildcareWorkerThreadHandleBuiltIn(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
+{
+    PCKMKBUILTINENTRY pBuiltIn = pChild->u.BuiltIn.pBuiltIn;
+    KMKBUILTINCTX Ctx =
+    {
+        pBuiltIn->uName.s.sz,
+        pChild->pMkChild ? &pChild->pMkChild->output : NULL,
+        pWorker,
+    };
+    if (pBuiltIn->uFnSignature == FN_SIG_MAIN)
+        pChild->iExitCode = pBuiltIn->u.pfnMain(pChild->u.BuiltIn.cArgs, pChild->u.BuiltIn.papszArgs,
+                                                pChild->u.BuiltIn.papszEnv, &Ctx);
+    else if (pBuiltIn->uFnSignature == FN_SIG_MAIN_SPAWNS)
+        pChild->iExitCode = pBuiltIn->u.pfnMainSpawns(pChild->u.BuiltIn.cArgs, pChild->u.BuiltIn.papszArgs,
+                                                      pChild->u.BuiltIn.papszEnv, &Ctx, pChild->pMkChild, NULL /*pPid*/);
+    else
+    {
+        assert(0);
+        pChild->iExitCode = 98;
+    }
+}
+
+/**
+ * Childcare worker: handle append write-out.
+ *
+ * @param   pWorker             The worker.
+ * @param   pChild              The kSubmit child.
+ */
+static void mkWinChildcareWorkerThreadHandleAppend(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
+{
+    int fd = open(pChild->u.Append.pszFilename,
+                  pChild->u.Append.fTruncate
+                  ? O_WRONLY | O_TRUNC  | O_CREAT | _O_NOINHERIT | _O_BINARY
+                  : O_WRONLY | O_APPEND | O_CREAT | _O_NOINHERIT | _O_BINARY,
+                  0666);
+    if (fd >= 0)
+    {
+        ssize_t cbWritten = write(fd, pChild->u.Append.pszAppend, pChild->u.Append.cbAppend);
+        if (cbWritten == (ssize_t)pChild->u.Append.cbAppend)
+        {
+            if (close(fd) >= 0)
+            {
+                pChild->iExitCode = 0;
+                return;
+            }
+            MkWinChildError(pWorker, 1, "kmk_builtin_append: close failed on '%s': %u (%s)\n",
+                            pChild->u.Append.pszFilename, errno, strerror(errno));
+        }
+        else
+            MkWinChildError(pWorker, 1, "kmk_builtin_append: error writing %lu bytes to on '%s': %u (%s)\n",
+                            pChild->u.Append.cbAppend, pChild->u.Append.pszFilename, errno, strerror(errno));
+        close(fd);
+    }
+    else
+        MkWinChildError(pWorker, 1, "kmk_builtin_append: error opening '%s': %u (%s)\n",
+                        pChild->u.Append.pszFilename, errno, strerror(errno));
+    pChild->iExitCode = 1;
+}
+
+/**
+ * Childcare worker: handle kSubmit job.
+ *
+ * @param   pWorker             The worker.
+ * @param   pChild              The kSubmit child.
+ */
+static void mkWinChildcareWorkerThreadHandleSubmit(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
+{
+    void  *pvSubmitWorker = pChild->u.Submit.pvSubmitWorker;
+
+    /*
+     * Prep the wait handles.
+     */
+    HANDLE ahHandles[3]   = { pChild->u.Submit.hEvent, NULL, NULL };
+    DWORD  cHandles       = 1;
+    if (pChild->u.Submit.pStdOut)
+    {
+        assert(pChild->u.Submit.pStdErr);
+        pChild->u.Submit.pStdOut->fHaveWrittenOut = FALSE;
+        ahHandles[cHandles++] = pChild->u.Submit.pStdOut->hEvent;
+        pChild->u.Submit.pStdErr->fHaveWrittenOut = FALSE;
+        ahHandles[cHandles++] = pChild->u.Submit.pStdErr->hEvent;
+    }
+
+    /*
+     * Wait loop.
+     */
+    for (;;)
+    {
+        int   iExitCode = -42;
+        int   iSignal   = -1;
+        DWORD dwStatus;
+        if (cHandles == 1)
+            dwStatus = WaitForSingleObject(ahHandles[0], INFINITE);
+        else
+        {
+            dwStatus = WaitForMultipleObjects(cHandles, ahHandles, FALSE /*fWaitAll*/, INFINITE);
+            assert(dwStatus != WAIT_FAILED);
+            if (dwStatus == WAIT_OBJECT_0 + 1)
+                mkWinChildcareWorkerCatchOutput(pChild, pChild->u.Submit.pStdOut, FALSE /*fDraining*/);
+            else if (dwStatus == WAIT_OBJECT_0 + 2)
+                mkWinChildcareWorkerCatchOutput(pChild, pChild->u.Submit.pStdErr, FALSE /*fDraining*/);
+        }
+        if (kSubmitSubProcGetResult((intptr_t)pvSubmitWorker, dwStatus == WAIT_OBJECT_0 /*fBlock*/, &iExitCode, &iSignal) == 0)
+        {
+            if (pChild->u.Submit.pStdOut)
+                MkWinChildcareWorkerDrainPipes(pChild, pChild->u.Submit.pStdOut, pChild->u.Submit.pStdErr);
+
+            pChild->iExitCode = iExitCode;
+            pChild->iSignal   = iSignal;
+            /* Cleanup must be done on the main thread. */
+            return;
+        }
+
+        if (pChild->iSignal != 0)
+            kSubmitSubProcKill((intptr_t)pvSubmitWorker, pChild->iSignal);
+    }
+}
+
+/**
+ * Childcare worker: handle kmk_redirect process.
+ *
+ * @param   pWorker             The worker.
+ * @param   pChild              The redirect child.
+ */
+static void mkWinChildcareWorkerThreadHandleRedirect(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
+{
+    mkWinChildcareWorkerWaitForProcess(pWorker, pChild, pChild->u.Redirect.hProcess, L"kmk_redirect", FALSE /*fCatchOutput*/);
+}
+
+#endif /* KMK */
+
+/**
+ * Childcare worker thread.
+ *
+ * @returns 0
+ * @param   pvUser              The worker instance.
+ */
+static unsigned int __stdcall mkWinChildcareWorkerThread(void *pvUser)
+{
+    PWINCHILDCAREWORKER pWorker = (PWINCHILDCAREWORKER)pvUser;
+    assert(pWorker->uMagic == WINCHILDCAREWORKER_MAGIC);
+
+#ifdef MKWINCHILD_DO_SET_PROCESSOR_GROUP
+    /*
+     * Adjust process group if necessary.
+     *
+     * Note! It seems that setting the mask to zero means that we select all
+     *       active processors.  Couldn't find any alternative API for getting
+     *       the correct active processor mask.
+     */
+    if (g_cProcessorGroups > 1)
+    {
+        GROUP_AFFINITY Affinity = { 0 /* == all active apparently */, pWorker->iProcessorGroup, { 0, 0, 0 } };
+        BOOL fRet = g_pfnSetThreadGroupAffinity(GetCurrentThread(), &Affinity, NULL);
+        assert(fRet); (void)fRet;
+# ifndef NDEBUG
+        {
+            GROUP_AFFINITY ActualAffinity = { 0xbeefbeefU, 0xbeef, { 0xbeef, 0xbeef, 0xbeef } };
+            fRet = GetThreadGroupAffinity(GetCurrentThread(), &ActualAffinity);
+            assert(fRet); (void)fRet;
+            assert(ActualAffinity.Group == pWorker->iProcessorGroup);
+        }
+# endif
+    }
+#endif
+
+    /*
+     * Work loop.
+     */
+    while (!g_fShutdown)
+    {
+        /*
+         * Try go idle.
+         */
+        PWINCHILD pChild = pWorker->pTailTodoChildren;
+        if (!pChild)
+        {
+            _InterlockedExchange(&pWorker->fIdle, TRUE);
+            pChild = pWorker->pTailTodoChildren;
+            if (!pChild)
+            {
+                DWORD dwStatus;
+
+                _InterlockedIncrement((long *)&g_cIdleChildcareWorkers);
+                _InterlockedExchange((long *)&g_idxLastChildcareWorker, pWorker->idxWorker);
+                dwStatus = WaitForSingleObject(pWorker->hEvtIdle, INFINITE);
+                _InterlockedExchange(&pWorker->fIdle, FALSE);
+                _InterlockedDecrement((long *)&g_cIdleChildcareWorkers);
+
+                assert(dwStatus != WAIT_FAILED);
+                if (dwStatus == WAIT_FAILED)
+                    Sleep(20);
+
+                pChild = pWorker->pTailTodoChildren;
+            }
+            else
+                _InterlockedExchange(&pWorker->fIdle, FALSE);
+        }
+        if (pChild)
+        {
+            /*
+             * We got work to do.  First job is to deque the job.
+             */
+            pChild = mkWinChildDequeFromLifo(&pWorker->pTailTodoChildren, pChild);
+            assert(pChild);
+            if (pChild)
+            {
+                PWINCHILD pTailExpect;
+
+                pChild->pWorker = pWorker;
+                pWorker->pCurChild = pChild;
+                switch (pChild->enmType)
+                {
+                    case WINCHILDTYPE_PROCESS:
+                        mkWinChildcareWorkerThreadHandleProcess(pWorker, pChild);
+                        break;
+#ifdef KMK
+                    case WINCHILDTYPE_BUILT_IN:
+                        mkWinChildcareWorkerThreadHandleBuiltIn(pWorker, pChild);
+                        break;
+                    case WINCHILDTYPE_APPEND:
+                        mkWinChildcareWorkerThreadHandleAppend(pWorker, pChild);
+                        break;
+                    case WINCHILDTYPE_SUBMIT:
+                        mkWinChildcareWorkerThreadHandleSubmit(pWorker, pChild);
+                        break;
+                    case WINCHILDTYPE_REDIRECT:
+                        mkWinChildcareWorkerThreadHandleRedirect(pWorker, pChild);
+                        break;
+#endif
+                    default:
+                        assert(0);
+                }
+                pWorker->pCurChild = NULL;
+                pChild->pWorker = NULL;
+
+                /*
+                 * Move the child to the completed list.
+                 */
+                pTailExpect = NULL;
+                for (;;)
+                {
+                    PWINCHILD pTailActual;
+                    pChild->pNext = pTailExpect;
+                    pTailActual = _InterlockedCompareExchangePointer(&g_pTailCompletedChildren, pChild, pTailExpect);
+                    if (pTailActual != pTailExpect)
+                        pTailExpect = pTailActual;
+                    else
+                    {
+                        _InterlockedDecrement(&g_cPendingChildren);
+                        if (pTailExpect)
+                            break;
+                        if (SetEvent(g_hEvtWaitChildren))
+                            break;
+                        MkWinChildError(pWorker, 1, "SetEvent(g_hEvtWaitChildren=%p) failed: %u\n",
+                                        g_hEvtWaitChildren, GetLastError());
+                        break;
+                    }
+                }
+            }
+        }
+    }
+
+    _endthreadex(0);
+    return 0;
+}
+
+/**
+ * Creates a pipe for catching child output.
+ *
+ * This is a custom CreatePipe implementation that allows for overlapped I/O on
+ * our end of the pipe.  Silly that they don't offer an API that does this.
+ *
+ * @returns The pipe that was created. NULL on failure.
+ * @param   pPipe               The structure for the pipe.
+ * @param   iWhich              Which standard descriptor this is a pipe for.
+ * @param   idxWorker           The worker index.
+ */
+PWINCCWPIPE MkWinChildcareCreateWorkerPipe(unsigned iWhich, unsigned int idxWorker)
+{
+    /*
+     * We try generate a reasonably unique name from the get go, so this retry
+     * loop shouldn't really ever be needed.  But you never know.
+     */
+    static unsigned s_iSeqNo = 0;
+    DWORD const     cMaxInstances = 1;
+    DWORD const     cbPipe        = 4096;
+    DWORD const     cMsTimeout    = 0;
+    unsigned        cTries        = 256;
+    while (cTries-- > 0)
+    {
+        /* Create the pipe (our end). */
+        HANDLE hPipeRead;
+        DWORD  fOpenMode = PIPE_ACCESS_INBOUND | FILE_FLAG_OVERLAPPED | FILE_FLAG_FIRST_PIPE_INSTANCE;
+        DWORD  fPipeMode = PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT | PIPE_REJECT_REMOTE_CLIENTS;
+        WCHAR  wszName[MAX_PATH];
+        s_iSeqNo++;
+        _snwprintf(wszName, MAX_PATH, L"\\\\.\\pipe\\kmk-winchildren-%u-%u-%u-%s-%u-%u",
+                   GetCurrentProcessId(), GetCurrentThreadId(), idxWorker, iWhich == 1 ? L"out" : L"err", s_iSeqNo, GetTickCount());
+        hPipeRead = CreateNamedPipeW(wszName, fOpenMode, fPipeMode, cMaxInstances, cbPipe, cbPipe, cMsTimeout, NULL /*pSecAttr*/);
+        if (hPipeRead == INVALID_HANDLE_VALUE && GetLastError() == ERROR_INVALID_PARAMETER)
+        {
+            fOpenMode &= ~FILE_FLAG_FIRST_PIPE_INSTANCE;
+            fPipeMode &= ~PIPE_REJECT_REMOTE_CLIENTS;
+            hPipeRead = CreateNamedPipeW(wszName, fOpenMode, fPipeMode, cMaxInstances, cbPipe, cbPipe, cMsTimeout, NULL /*pSecAttr*/);
+        }
+        if (hPipeRead != INVALID_HANDLE_VALUE)
+        {
+            /* Connect the other end. */
+            HANDLE hPipeWrite = CreateFileW(wszName, GENERIC_WRITE | FILE_READ_ATTRIBUTES, 0 /*fShareMode*/, NULL /*pSecAttr*/,
+                                            OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL /*hTemplateFile*/);
+            if (hPipeWrite != INVALID_HANDLE_VALUE)
+            {
+                /*
+                 * Create the event object and we're done.
+                 *
+                 * It starts in signalled stated so we don't need special code
+                 * for handing when we start waiting.
+                 */
+                HANDLE hEvent = CreateEventW(NULL /*pSecAttr*/, TRUE /*fManualReset*/, TRUE /*fInitialState*/, NULL /*pwszName*/);
+                if (hEvent != NULL)
+                {
+                    PWINCCWPIPE pPipe = (PWINCCWPIPE)xcalloc(sizeof(*pPipe));
+                    pPipe->hPipeMine    = hPipeRead;
+                    pPipe->hPipeChild   = hPipeWrite;
+                    pPipe->hEvent       = hEvent;
+                    pPipe->iWhich       = iWhich;
+                    pPipe->fReadPending = FALSE;
+                    pPipe->cbBuffer     = cbPipe;
+                    pPipe->pbBuffer     = xcalloc(cbPipe);
+                    return pPipe;
+                }
+
+                CloseHandle(hPipeWrite);
+                CloseHandle(hPipeRead);
+                return NULL;
+            }
+            CloseHandle(hPipeRead);
+        }
+    }
+    return NULL;
+}
+
+/**
+ * Destroys a childcare worker pipe.
+ *
+ * @param   pPipe       The pipe.
+ */
+void MkWinChildcareDeleteWorkerPipe(PWINCCWPIPE pPipe)
+{
+    if (pPipe->hPipeChild != NULL)
+    {
+        CloseHandle(pPipe->hPipeChild);
+        pPipe->hPipeChild = NULL;
+    }
+
+    if (pPipe->hPipeMine != NULL)
+    {
+        if (pPipe->fReadPending)
+            if (!CancelIo(pPipe->hPipeMine))
+                WaitForSingleObject(pPipe->hEvent, INFINITE);
+        CloseHandle(pPipe->hPipeMine);
+        pPipe->hPipeMine = NULL;
+    }
+
+    if (pPipe->hEvent != NULL)
+    {
+        CloseHandle(pPipe->hEvent);
+        pPipe->hEvent = NULL;
+    }
+
+    if (pPipe->pbBuffer)
+    {
+        free(pPipe->pbBuffer);
+        pPipe->pbBuffer = NULL;
+    }
+}
+
+/**
+ * Initializes the processor group allocator.
+ *
+ * @param   pState              The allocator to initialize.
+ */
+void MkWinChildInitCpuGroupAllocator(PMKWINCHILDCPUGROUPALLOCSTATE pState)
+{
+    /* We shift the starting group with the make nesting level as part of
+       our very simple distribution strategy. */
+    pState->idxGroup = makelevel;
+    pState->idxProcessorInGroup = 0;
+}
+
+/**
+ * Allocate CPU group for the next child process.
+ *
+ * @returns CPU group.
+ * @param   pState              The allocator state.  Must be initialized by
+ *                              MkWinChildInitCpuGroupAllocator().
+ */
+unsigned int MkWinChildAllocateCpuGroup(PMKWINCHILDCPUGROUPALLOCSTATE pState)
+{
+    unsigned int iGroup = 0;
+    if (g_cProcessorGroups > 1)
+    {
+        unsigned int cMaxInGroup;
+        unsigned int cInGroup;
+
+        iGroup = pState->idxGroup % g_cProcessorGroups;
+
+        /* Advance.  We employ a very simple strategy that does 50% in
+           each group for each group cycle.  Odd processor counts are
+           caught in odd group cycles.  The init function selects the
+           starting group based on make nesting level to avoid stressing
+           out the first group. */
+        cInGroup = ++pState->idxProcessorInGroup;
+        cMaxInGroup = g_pacProcessorsInGroup[iGroup];
+        if (   !(cMaxInGroup & 1)
+            || !((pState->idxGroup / g_cProcessorGroups) & 1))
+            cMaxInGroup /= 2;
+        else
+            cMaxInGroup = cMaxInGroup / 2 + 1;
+        if (cInGroup >= cMaxInGroup)
+        {
+            pState->idxProcessorInGroup = 0;
+            pState->idxGroup++;
+        }
+    }
+    return iGroup;
+}
+
+/**
+ * Creates another childcare worker.
+ *
+ * @returns The new worker, if we succeeded.
+ */
+static PWINCHILDCAREWORKER mkWinChildcareCreateWorker(void)
+{
+    PWINCHILDCAREWORKER pWorker = (PWINCHILDCAREWORKER)xcalloc(sizeof(*pWorker));
+    pWorker->uMagic    = WINCHILDCAREWORKER_MAGIC;
+    pWorker->idxWorker = g_cChildCareworkers;
+    pWorker->hEvtIdle  = CreateEventW(NULL, FALSE /*fManualReset*/, FALSE /*fInitialState*/, NULL /*pwszName*/);
+    if (pWorker->hEvtIdle)
+    {
+        pWorker->pStdOut = MkWinChildcareCreateWorkerPipe(1, pWorker->idxWorker);
+        if (pWorker->pStdOut)
+        {
+            pWorker->pStdErr = MkWinChildcareCreateWorkerPipe(2, pWorker->idxWorker);
+            if (pWorker->pStdErr)
+            {
+                /* Before we start the thread, assign it to a processor group. */
+                pWorker->iProcessorGroup = MkWinChildAllocateCpuGroup(&g_ProcessorGroupAllocator);
+
+                /* Try start the thread. */
+                pWorker->hThread = (HANDLE)_beginthreadex(NULL, 0 /*cbStack*/, mkWinChildcareWorkerThread, pWorker,
+                                                          0, &pWorker->tid);
+                if (pWorker->hThread != NULL)
+                {
+                    pWorker->idxWorker = g_cChildCareworkers++; /* paranoia */
+                    g_papChildCareworkers[pWorker->idxWorker] = pWorker;
+                    return pWorker;
+                }
+
+                /* Bail out! */
+                ONS (error, NILF, "_beginthreadex failed: %u (%s)\n", errno, strerror(errno));
+                MkWinChildcareDeleteWorkerPipe(pWorker->pStdErr);
+            }
+            else
+                ON (error, NILF, "Failed to create stderr pipe: %u\n", GetLastError());
+            MkWinChildcareDeleteWorkerPipe(pWorker->pStdOut);
+        }
+        else
+            ON (error, NILF, "Failed to create stdout pipe: %u\n", GetLastError());
+        CloseHandle(pWorker->hEvtIdle);
+    }
+    else
+        ON (error, NILF, "CreateEvent failed: %u\n", GetLastError());
+    pWorker->uMagic = ~WINCHILDCAREWORKER_MAGIC;
+    free(pWorker);
+    return NULL;
+}
+
+/**
+ * Helper for copying argument and environment vectors.
+ *
+ * @returns Single alloc block copy.
+ * @param   papszSrc    The source vector.
+ * @param   pcbStrings  Where to return the size of the strings & terminator.
+ */
+static char **mkWinChildCopyStringArray(char **papszSrc, size_t *pcbStrings)
+{
+    const char *psz;
+    char      **papszDstArray;
+    char       *pszDstStr;
+    size_t      i;
+
+    /* Calc sizes first. */
+    size_t      cbStrings = 1; /* (one extra for terminator string) */
+    size_t      cStrings = 0;
+    while ((psz = papszSrc[cStrings]) != NULL)
+    {
+        cbStrings += strlen(psz) + 1;
+        cStrings++;
+    }
+    *pcbStrings = cbStrings;
+
+    /* Allocate destination. */
+    papszDstArray = (char **)xmalloc(cbStrings + (cStrings + 1) * sizeof(papszDstArray[0]));
+    pszDstStr = (char *)&papszDstArray[cStrings + 1];
+
+    /* Copy it. */
+    for (i = 0; i < cStrings; i++)
+    {
+        const char *pszSource = papszSrc[i];
+        size_t      cchString = strlen(pszSource);
+        papszDstArray[i] = pszDstStr;
+        memcpy(pszDstStr, pszSource, cchString);
+        pszDstStr += cchString;
+        *pszDstStr++ = '\0';
+    }
+    *pszDstStr = '\0';
+    assert(&pszDstStr[1] - papszDstArray[0] == cbStrings);
+    papszDstArray[i] = NULL;
+    return papszDstArray;
+}
+
+/**
+ * Allocate and init a WINCHILD.
+ *
+ * @returns The new windows child structure.
+ * @param   enmType         The child type.
+ */
+static PWINCHILD mkWinChildNew(WINCHILDTYPE enmType)
+{
+    PWINCHILD pChild = xcalloc(sizeof(*pChild));
+    pChild->enmType     = enmType;
+    pChild->fCoreDumped = 0;
+    pChild->iSignal     = 0;
+    pChild->iExitCode   = 222222;
+    pChild->uMagic      = WINCHILD_MAGIC;
+    pChild->pid         = (intptr_t)pChild;
+    return pChild;
+}
+
+/**
+ * Destructor for WINCHILD.
+ *
+ * @param   pChild              The child structure to destroy.
+ */
+static void mkWinChildDelete(PWINCHILD pChild)
+{
+    assert(pChild->uMagic == WINCHILD_MAGIC);
+    pChild->uMagic = ~WINCHILD_MAGIC;
+
+    switch (pChild->enmType)
+    {
+        case WINCHILDTYPE_PROCESS:
+        {
+            if (pChild->u.Process.papszArgs)
+            {
+                free(pChild->u.Process.papszArgs);
+                pChild->u.Process.papszArgs = NULL;
+            }
+            if (pChild->u.Process.cbEnvStrings && pChild->u.Process.papszEnv)
+            {
+                free(pChild->u.Process.papszEnv);
+                pChild->u.Process.papszEnv = NULL;
+            }
+            if (pChild->u.Process.pszShell)
+            {
+                free(pChild->u.Process.pszShell);
+                pChild->u.Process.pszShell = NULL;
+            }
+            if (pChild->u.Process.hProcess)
+            {
+                CloseHandle(pChild->u.Process.hProcess);
+                pChild->u.Process.hProcess = NULL;
+            }
+            mkWinChildcareWorkerCloseStandardHandles(pChild);
+            break;
+        }
+
+#ifdef KMK
+        case WINCHILDTYPE_BUILT_IN:
+            if (pChild->u.BuiltIn.papszArgs)
+            {
+                free(pChild->u.BuiltIn.papszArgs);
+                pChild->u.BuiltIn.papszArgs = NULL;
+            }
+            if (pChild->u.BuiltIn.papszEnv)
+            {
+                free(pChild->u.BuiltIn.papszEnv);
+                pChild->u.BuiltIn.papszEnv = NULL;
+            }
+            break;
+
+        case WINCHILDTYPE_APPEND:
+            if (pChild->u.Append.pszFilename)
+            {
+                free(pChild->u.Append.pszFilename);
+                pChild->u.Append.pszFilename = NULL;
+            }
+            if (pChild->u.Append.pszAppend)
+            {
+                free(pChild->u.Append.pszAppend);
+                pChild->u.Append.pszAppend = NULL;
+            }
+            break;
+
+        case WINCHILDTYPE_SUBMIT:
+            if (pChild->u.Submit.pvSubmitWorker)
+            {
+                kSubmitSubProcCleanup((intptr_t)pChild->u.Submit.pvSubmitWorker);
+                pChild->u.Submit.pvSubmitWorker = NULL;
+            }
+            break;
+
+        case WINCHILDTYPE_REDIRECT:
+            if (pChild->u.Redirect.hProcess)
+            {
+                CloseHandle(pChild->u.Redirect.hProcess);
+                pChild->u.Redirect.hProcess = NULL;
+            }
+            break;
+#endif /* KMK */
+
+        default:
+            assert(0);
+    }
+
+    free(pChild);
+}
+
+/**
+ * Queues the child with a worker, creating new workers if necessary.
+ *
+ * @returns 0 on success, windows error code on failure (child destroyed).
+ * @param   pChild          The child.
+ * @param   pPid            Where to return the PID (optional).
+ */
+static int mkWinChildPushToCareWorker(PWINCHILD pChild, pid_t *pPid)
+{
+    PWINCHILDCAREWORKER pWorker = NULL;
+    PWINCHILD pOldChild;
+    PWINCHILD pCurChild;
+
+    /*
+     * There are usually idle workers around, except for at the start.
+     */
+    if (g_cIdleChildcareWorkers > 0)
+    {
+        /*
+         * Try the idle hint first and move forward from it.
+         */
+        unsigned int const cWorkers = g_cChildCareworkers;
+        unsigned int       iHint    = g_idxLastChildcareWorker;
+        unsigned int       i;
+        for (i = iHint; i < cWorkers; i++)
+        {
+            PWINCHILDCAREWORKER pPossibleWorker = g_papChildCareworkers[i];
+            if (pPossibleWorker->fIdle)
+            {
+                pWorker = pPossibleWorker;
+                break;
+            }
+        }
+        if (!pWorker)
+        {
+            /* Scan from the start. */
+            if (iHint > cWorkers)
+                iHint = cWorkers;
+            for (i = 0; i < iHint; i++)
+            {
+                PWINCHILDCAREWORKER pPossibleWorker = g_papChildCareworkers[i];
+                if (pPossibleWorker->fIdle)
+                {
+                    pWorker = pPossibleWorker;
+                    break;
+                }
+            }
+        }
+    }
+    if (!pWorker)
+    {
+        /*
+         * Try create more workers if we haven't reached the max yet.
+         */
+        if (g_cChildCareworkers < g_cChildCareworkersMax)
+            pWorker = mkWinChildcareCreateWorker();
+
+        /*
+         * Queue it with an existing worker.  Look for one without anthing extra scheduled.
+         */
+        if (!pWorker)
+        {
+            unsigned int i = g_cChildCareworkers;
+            if (i == 0)
+                fatal(NILF, 0, _("Failed to create worker threads for managing child processes!\n"));
+            pWorker = g_papChildCareworkers[--i];
+            if (pWorker->pTailTodoChildren)
+                while (i-- > 0)
+                {
+                    PWINCHILDCAREWORKER pPossibleWorker = g_papChildCareworkers[i];
+                    if (!pPossibleWorker->pTailTodoChildren)
+                    {
+                        pWorker = pPossibleWorker;
+                        break;
+                    }
+                }
+        }
+    }
+
+    /*
+     * Do the queueing.
+     */
+    pOldChild = NULL;
+    for (;;)
+    {
+        pChild->pNext = pOldChild;
+        pCurChild = _InterlockedCompareExchangePointer((void **)&pWorker->pTailTodoChildren, pChild, pOldChild);
+        if (pCurChild == pOldChild)
+        {
+            DWORD volatile dwErr;
+            _InterlockedIncrement(&g_cPendingChildren);
+            if (   !pWorker->fIdle
+                || SetEvent(pWorker->hEvtIdle))
+            {
+                *pPid = pChild->pid;
+                return 0;
+            }
+
+            _InterlockedDecrement(&g_cPendingChildren);
+            dwErr = GetLastError();
+            assert(0);
+            mkWinChildDelete(pChild);
+            return dwErr ? dwErr : -20;
+        }
+        pOldChild = pCurChild;
+    }
+}
+
+/**
+ * Creates a regular child process (job.c).
+ *
+ * Will copy the information and push it to a childcare thread that does the
+ * actual process creation.
+ *
+ * @returns 0 on success, windows status code on failure.
+ * @param   papszArgs           The arguments.
+ * @param   papszEnv            The environment (optional).
+ * @param   pszShell            The SHELL variable value (optional).
+ * @param   pMkChild            The make child structure (optional).
+ * @param   pPid                Where to return the pid.
+ */
+int MkWinChildCreate(char **papszArgs, char **papszEnv, const char *pszShell, struct child *pMkChild, pid_t *pPid)
+{
+    PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_PROCESS);
+    pChild->pMkChild = pMkChild;
+
+    pChild->u.Process.papszArgs = mkWinChildCopyStringArray(papszArgs, &pChild->u.Process.cbArgsStrings);
+    if (   !papszEnv
+        || !pMkChild
+        || pMkChild->environment == papszEnv)
+    {
+        pChild->u.Process.cbEnvStrings = 0;
+        pChild->u.Process.papszEnv = papszEnv;
+    }
+    else
+        pChild->u.Process.papszEnv = mkWinChildCopyStringArray(papszEnv, &pChild->u.Process.cbEnvStrings);
+    if (pszShell)
+        pChild->u.Process.pszShell = xstrdup(pszShell);
+    pChild->u.Process.hStdOut = INVALID_HANDLE_VALUE;
+    pChild->u.Process.hStdErr = INVALID_HANDLE_VALUE;
+
+    /* We always catch the output in order to prevent character soups courtesy
+       of the microsoft CRT and/or linkers writing character by character to the
+       console.  Always try write whole lines, even when --output-sync is none. */
+    pChild->u.Process.fCatchOutput = TRUE;
+
+    return mkWinChildPushToCareWorker(pChild, pPid);
+}
+
+/**
+ * Creates a chile process with a pipe hooked up to stdout.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   papszArgs       The argument vector.
+ * @param   papszEnv        The environment vector (optional).
+ * @param   fdErr           File descriptor to hook up to stderr.
+ * @param   pPid            Where to return the pid.
+ * @param   pfdReadPipe     Where to return the read end of the pipe.
+ */
+int MkWinChildCreateWithStdOutPipe(char **papszArgs, char **papszEnv, int fdErr, pid_t *pPid, int *pfdReadPipe)
+{
+    /*
+     * Create the pipe.
+     */
+    HANDLE hReadPipe;
+    HANDLE hWritePipe;
+    if (CreatePipe(&hReadPipe, &hWritePipe, NULL, 0 /* default size */))
+    {
+        //if (SetHandleInformation(hWritePipe, HANDLE_FLAG_INHERIT /* clear */ , HANDLE_FLAG_INHERIT /*set*/))
+        {
+            int fdReadPipe = _open_osfhandle((intptr_t)hReadPipe, O_RDONLY);
+            if (fdReadPipe >= 0)
+            {
+                PWINCHILD pChild;
+                int rc;
+
+                /*
+                 * Get a handle for fdErr.  Ignore failure.
+                 */
+                HANDLE hStdErr = INVALID_HANDLE_VALUE;
+                if (fdErr >= 0)
+                {
+                    HANDLE hNative = (HANDLE)_get_osfhandle(fdErr);
+                    if (!DuplicateHandle(GetCurrentProcess(), hNative, GetCurrentProcess(),
+                                         &hStdErr, 0 /*DesiredAccess*/, TRUE /*fInherit*/, DUPLICATE_SAME_ACCESS))
+                    {
+                        ONN(error, NILF, _("DuplicateHandle failed on stderr descriptor (%u): %u\n"), fdErr, GetLastError());
+                        hStdErr = INVALID_HANDLE_VALUE;
+                    }
+                }
+
+                /*
+                 * Push it off to the worker thread.
+                 */
+                pChild = mkWinChildNew(WINCHILDTYPE_PROCESS);
+                pChild->u.Process.papszArgs = mkWinChildCopyStringArray(papszArgs, &pChild->u.Process.cbArgsStrings);
+                pChild->u.Process.papszEnv  = mkWinChildCopyStringArray(papszEnv ? papszEnv : environ,
+                                                                        &pChild->u.Process.cbEnvStrings);
+                //if (pszShell)
+                //    pChild->u.Process.pszShell = xstrdup(pszShell);
+                pChild->u.Process.hStdOut   = hWritePipe;
+                pChild->u.Process.hStdErr   = hStdErr;
+                pChild->u.Process.fCloseStdErr = TRUE;
+                pChild->u.Process.fCloseStdOut = TRUE;
+
+                rc = mkWinChildPushToCareWorker(pChild, pPid);
+                if (rc == 0)
+                    *pfdReadPipe = fdReadPipe;
+                else
+                {
+                    ON(error, NILF, _("mkWinChildPushToCareWorker failed on pipe: %d\n"), rc);
+                    close(fdReadPipe);
+                    *pfdReadPipe = -1;
+                    *pPid = -1;
+                }
+                return rc;
+            }
+
+            ON(error, NILF, _("_open_osfhandle failed on pipe: %u\n"), errno);
+        }
+        //else
+        //    ON(error, NILF, _("SetHandleInformation failed on pipe: %u\n"), GetLastError());
+        if (hReadPipe != INVALID_HANDLE_VALUE)
+            CloseHandle(hReadPipe);
+        CloseHandle(hWritePipe);
+    }
+    else
+        ON(error, NILF, _("CreatePipe failed: %u\n"), GetLastError());
+    *pfdReadPipe = -1;
+    *pPid = -1;
+    return -1;
+}
+
+#ifdef KMK
+
+/**
+ * Interface used by kmkbuiltin.c for executing builtin commands on threads.
+ *
+ * @returns 0 on success, windows status code on failure.
+ * @param   pBuiltIn        The kmk built-in command entry.
+ * @param   cArgs           The number of arguments in papszArgs.
+ * @param   papszArgs       The argument vector.
+ * @param   papszEnv        The environment vector, optional.
+ * @param   pMkChild        The make child structure.
+ * @param   pPid            Where to return the pid.
+ */
+int MkWinChildCreateBuiltIn(PCKMKBUILTINENTRY pBuiltIn, int cArgs, char **papszArgs, char **papszEnv,
+                            struct child *pMkChild, pid_t *pPid)
+{
+    size_t    cbIgnored;
+    PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_BUILT_IN);
+    pChild->pMkChild            = pMkChild;
+    pChild->u.BuiltIn.pBuiltIn  = pBuiltIn;
+    pChild->u.BuiltIn.cArgs     = cArgs;
+    pChild->u.BuiltIn.papszArgs = mkWinChildCopyStringArray(papszArgs, &cbIgnored);
+    pChild->u.BuiltIn.papszEnv  = papszEnv ? mkWinChildCopyStringArray(papszEnv, &cbIgnored) : NULL;
+    return mkWinChildPushToCareWorker(pChild, pPid);
+}
+
+/**
+ * Interface used by append.c for do the slow file system part.
+ *
+ * This will append the given buffer to the specified file and free the buffer.
+ *
+ * @returns 0 on success, windows status code on failure.
+ *
+ * @param   pszFilename     The name of the file to append to.
+ * @param   ppszAppend      What to append.  The pointer pointed to is set to
+ *                          NULL once we've taken ownership of the buffer and
+ *                          promise to free it.
+ * @param   cbAppend        How much to append.
+ * @param   fTruncate       Whether to truncate the file before appending to it.
+ * @param   pMkChild        The make child structure.
+ * @param   pPid            Where to return the pid.
+ */
+int MkWinChildCreateAppend(const char *pszFilename, char **ppszAppend, size_t cbAppend, int fTruncate,
+                           struct child *pMkChild, pid_t *pPid)
+{
+    size_t    cbFilename = strlen(pszFilename) + 1;
+    PWINCHILD pChild     = mkWinChildNew(WINCHILDTYPE_APPEND);
+    pChild->pMkChild            = pMkChild;
+    pChild->u.Append.fTruncate  = fTruncate;
+    pChild->u.Append.pszAppend  = *ppszAppend;
+    pChild->u.Append.cbAppend   = cbAppend;
+    pChild->u.Append.pszFilename = (char *)memcpy(xmalloc(cbFilename), pszFilename, cbFilename);
+    *ppszAppend = NULL;
+    return mkWinChildPushToCareWorker(pChild, pPid);
+}
+
+/**
+ * Interface used by kSubmit.c for registering stuff to wait on.
+ *
+ * @returns 0 on success, windows status code on failure.
+ * @param   hEvent          The event object handle to wait on.
+ * @param   pvSubmitWorker  The argument to pass back to kSubmit to clean up.
+ * @param   pStdOut         Standard output pipe for the worker. Optional.
+ * @param   pStdErr         Standard error pipe for the worker. Optional.
+ * @param   pMkChild        The make child structure.
+ * @param   pPid            Where to return the pid.
+ */
+int MkWinChildCreateSubmit(intptr_t hEvent, void *pvSubmitWorker, PWINCCWPIPE pStdOut, PWINCCWPIPE pStdErr,
+                           struct child *pMkChild, pid_t *pPid)
+{
+    PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_SUBMIT);
+    pChild->pMkChild                = pMkChild;
+    pChild->u.Submit.hEvent         = (HANDLE)hEvent;
+    pChild->u.Submit.pvSubmitWorker = pvSubmitWorker;
+    pChild->u.Submit.pStdOut        = pStdOut;
+    pChild->u.Submit.pStdErr        = pStdErr;
+    return mkWinChildPushToCareWorker(pChild, pPid);
+}
+
+/**
+ * Interface used by redirect.c for registering stuff to wait on.
+ *
+ * @returns 0 on success, windows status code on failure.
+ * @param   hProcess        The process object to wait on.
+ * @param   pPid            Where to return the pid.
+ */
+int MkWinChildCreateRedirect(intptr_t hProcess, pid_t *pPid)
+{
+    PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_REDIRECT);
+    pChild->u.Redirect.hProcess = (HANDLE)hProcess;
+    return mkWinChildPushToCareWorker(pChild, pPid);
+}
+
+
+/**
+ * New interface used by redirect.c for spawning and waitin on a child.
+ *
+ * This interface is only used when kmk_builtin_redirect is already running on
+ * a worker thread.
+ *
+ * @returns exit status.
+ * @param   pvWorker        The worker instance.
+ * @param   pszExecutable   The executable image to run.
+ * @param   papszArgs       Argument vector.
+ * @param   fQuotedArgv     Whether the argument vector is already quoted and
+ *                          just need some space to be turned into a command
+ *                          line.
+ * @param   papszEnvVars    Environment vector.
+ * @param   pszCwd          The working directory of the child.  Optional.
+ * @param   pafReplace      Which standard handles to replace. Maybe modified!
+ * @param   pahReplace      The replacement handles.  Maybe modified!
+ *
+ */
+int MkWinChildBuiltInExecChild(void *pvWorker, const char *pszExecutable, char **papszArgs, BOOL fQuotedArgv,
+                               char **papszEnvVars, const char *pszCwd, BOOL pafReplace[3], HANDLE pahReplace[3])
+{
+    PWINCHILDCAREWORKER pWorker = (PWINCHILDCAREWORKER)pvWorker;
+    WCHAR              *pwszSearchPath   = NULL;
+    WCHAR              *pwszzEnvironment = NULL;
+    WCHAR              *pwszCommandLine  = NULL;
+    WCHAR              *pwszImageName    = NULL;
+    WCHAR              *pwszCwd          = NULL;
+    BOOL                fNeedShell       = FALSE;
+    PWINCHILD           pChild;
+    int                 rc;
+    assert(pWorker->uMagic == WINCHILDCAREWORKER_MAGIC);
+    pChild = pWorker->pCurChild;
+    assert(pChild != NULL && pChild->uMagic == WINCHILD_MAGIC);
+
+    /*
+     * Convert the CWD first since it's optional and we don't need to clean
+     * up anything here if it fails.
+     */
+    if (pszCwd)
+    {
+        size_t cchCwd = strlen(pszCwd);
+        int    cwcCwd = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszCwd, cchCwd + 1, NULL, 0);
+        pwszCwd = xmalloc((cwcCwd + 1) * sizeof(WCHAR)); /* (+1 in case cwcCwd is 0) */
+        cwcCwd = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszCwd, cchCwd + 1, pwszCwd, cwcCwd + 1);
+        if (!cwcCwd)
+        {
+            rc = GetLastError();
+            MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert CWD (%s): %u\n"), pszCwd, (unsigned)rc);
+            return rc;
+        }
+    }
+
+    /*
+     * Before we search for the image, we convert the environment so we don't
+     * have to traverse it twice to find the PATH.
+     */
+    rc = mkWinChildcareWorkerConvertEnvironment(pWorker, papszEnvVars ? papszEnvVars : environ, 0/*cbEnvStrings*/,
+                                                &pwszzEnvironment, &pwszSearchPath);
+    /*
+     * Find the executable and maybe checking if it's a shell script, then
+     * convert it to a command line.
+     */
+    if (rc == 0)
+        rc = mkWinChildcareWorkerFindImage(pWorker, pszExecutable, pwszSearchPath, pwszzEnvironment, NULL /*pszShell*/,
+                                           &pwszImageName, &fNeedShell, &pChild->fProbableClExe);
+    if (rc == 0)
+    {
+        assert(!fNeedShell);
+        if (!fQuotedArgv)
+            rc = mkWinChildcareWorkerConvertCommandline(pWorker, papszArgs, 0 /*fFlags*/, &pwszCommandLine);
+        else
+            rc = mkWinChildcareWorkerConvertQuotedArgvToCommandline(pWorker, papszArgs, &pwszCommandLine);
+
+        /*
+         * Create the child process.
+         */
+        if (rc == 0)
+        {
+            HANDLE hProcess;
+            rc = mkWinChildcareWorkerCreateProcess(pWorker, pwszImageName, pwszCommandLine, pwszzEnvironment,
+                                                   pwszCwd, pafReplace, pahReplace, TRUE /*fCatchOutput*/, &hProcess);
+            if (rc == 0)
+            {
+                /*
+                 * Wait for the child to complete.
+                 */
+                rc = mkWinChildcareWorkerWaitForProcess(pWorker, pChild, hProcess, pwszImageName, TRUE /*fCatchOutput*/);
+                CloseHandle(hProcess);
+            }
+        }
+    }
+
+    free(pwszCwd);
+    free(pwszCommandLine);
+    free(pwszImageName);
+    free(pwszzEnvironment);
+
+    return rc;
+}
+
+#endif /* CONFIG_NEW_WIN_CHILDREN */
+
+/**
+ * Interface used to kill process when processing Ctrl-C and fatal errors.
+ *
+ * @returns 0 on success, -1 & errno on error.
+ * @param   pid                 The process to kill (PWINCHILD).
+ * @param   iSignal             What to kill it with.
+ * @param   pMkChild            The make child structure for validation.
+ */
+int MkWinChildKill(pid_t pid, int iSignal, struct child *pMkChild)
+{
+    PWINCHILD pChild = (PWINCHILD)pid;
+    if (pChild)
+    {
+        assert(pChild->uMagic == WINCHILD_MAGIC);
+        if (pChild->uMagic == WINCHILD_MAGIC)
+        {
+            switch (pChild->enmType)
+            {
+                case WINCHILDTYPE_PROCESS:
+                    assert(pChild->pMkChild == pMkChild);
+                    TerminateProcess(pChild->u.Process.hProcess, DBG_TERMINATE_PROCESS);
+                    pChild->iSignal = iSignal;
+                    break;
+#ifdef KMK
+                case WINCHILDTYPE_SUBMIT:
+                {
+                    pChild->iSignal = iSignal;
+                    SetEvent(pChild->u.Submit.hEvent);
+                    break;
+                }
+
+                case WINCHILDTYPE_REDIRECT:
+                    TerminateProcess(pChild->u.Redirect.hProcess, DBG_TERMINATE_PROCESS);
+                    pChild->iSignal = iSignal;
+                    break;
+
+                case WINCHILDTYPE_BUILT_IN:
+                    break;
+
+#endif /* KMK */
+                default:
+                    assert(0);
+            }
+        }
+    }
+    return -1;
+}
+
+/**
+ * Wait for a child process to complete
+ *
+ * @returns 0 on success, windows error code on failure.
+ * @param   fBlock          Whether to block.
+ * @param   pPid            Where to return the pid if a child process
+ *                          completed.  This is set to zero if none.
+ * @param   piExitCode      Where to return the exit code.
+ * @param   piSignal        Where to return the exit signal number.
+ * @param   pfCoreDumped    Where to return the core dumped indicator.
+ * @param   ppMkChild       Where to return the associated struct child pointer.
+ */
+int MkWinChildWait(int fBlock, pid_t *pPid, int *piExitCode, int *piSignal, int *pfCoreDumped, struct child **ppMkChild)
+{
+    PWINCHILD pChild;
+
+    *pPid         = 0;
+    *piExitCode   = -222222;
+    *pfCoreDumped = 0;
+    *ppMkChild    = NULL;
+
+    /*
+     * Wait if necessary.
+     */
+    if (fBlock && !g_pTailCompletedChildren && g_cPendingChildren > 0)
+    {
+        DWORD dwStatus = WaitForSingleObject(g_hEvtWaitChildren, INFINITE);
+        if (dwStatus == WAIT_FAILED)
+            return (int)GetLastError();
+    }
+
+    /*
+     * Try unlink the last child in the LIFO.
+     */
+    pChild = g_pTailCompletedChildren;
+    if (!pChild)
+        return 0;
+    pChild = mkWinChildDequeFromLifo(&g_pTailCompletedChildren, pChild);
+    assert(pChild);
+
+    /*
+     * Set return values and ditch the child structure.
+     */
+    *pPid         = pChild->pid;
+    *piExitCode   = pChild->iExitCode;
+    *pfCoreDumped = pChild->fCoreDumped;
+    *ppMkChild    = pChild->pMkChild;
+    switch (pChild->enmType)
+    {
+        case WINCHILDTYPE_PROCESS:
+            break;
+#ifdef KMK
+        case WINCHILDTYPE_BUILT_IN:
+        case WINCHILDTYPE_APPEND:
+        case WINCHILDTYPE_SUBMIT:
+        case WINCHILDTYPE_REDIRECT:
+            break;
+#endif /* KMK */
+        default:
+            assert(0);
+    }
+    mkWinChildDelete(pChild);
+
+#ifdef KMK
+    /* Flush the volatile directory cache. */
+    dir_cache_invalid_after_job();
+#endif
+    return 0;
+}
+
+/**
+ * Get the child completed event handle.
+ *
+ * Needed when w32os.c is waiting for a job token to become available, given
+ * that completed children is the typical source of these tokens (esp. for kmk).
+ *
+ * @returns Zero if no active children, event handle if waiting is required.
+ */
+intptr_t MkWinChildGetCompleteEventHandle(void)
+{
+    /* We don't return the handle if we've got completed children.  This
+       is a safe guard against being called twice in a row without any
+       MkWinChildWait call inbetween. */
+    if (!g_pTailCompletedChildren)
+        return (intptr_t)g_hEvtWaitChildren;
+    return 0;
+}
+
+/**
+ * Emulate execv() for restarting kmk after one or more makefiles has been made.
+ *
+ * Does not return.
+ *
+ * @param   papszArgs           The arguments.
+ * @param   papszEnv            The environment.
+ */
+void MkWinChildReExecMake(char **papszArgs, char **papszEnv)
+{
+    PROCESS_INFORMATION     ProcInfo;
+    STARTUPINFOW            StartupInfo;
+    WCHAR                  *pwszCommandLine;
+    WCHAR                  *pwszzEnvironment;
+    WCHAR                  *pwszPathIgnored;
+    int                     rc;
+
+    /*
+     * Get the executable name.
+     */
+    WCHAR wszImageName[MKWINCHILD_MAX_PATH];
+    DWORD cwcImageName = GetModuleFileNameW(GetModuleHandle(NULL), wszImageName, MKWINCHILD_MAX_PATH);
+    if (cwcImageName == 0)
+        ON(fatal, NILF, _("MkWinChildReExecMake: GetModuleFileName failed: %u\n"), GetLastError());
+
+    /*
+     * Create the command line and environment.
+     */
+    rc = mkWinChildcareWorkerConvertCommandline(NULL, papszArgs, 0 /*fFlags*/, &pwszCommandLine);
+    if (rc != 0)
+        ON(fatal, NILF, _("MkWinChildReExecMake: mkWinChildcareWorkerConvertCommandline failed: %u\n"), rc);
+
+    rc = mkWinChildcareWorkerConvertEnvironment(NULL, papszEnv ? papszEnv : environ, 0 /*cbEnvStrings*/,
+                                                &pwszzEnvironment, &pwszPathIgnored);
+    if (rc != 0)
+        ON(fatal, NILF, _("MkWinChildReExecMake: mkWinChildcareWorkerConvertEnvironment failed: %u\n"), rc);
+
+#ifdef KMK
+    /*
+     * Flush the file system cache to avoid messing up tools fetching
+     * going on in the "exec'ed" make by keeping directories open.
+     */
+    dir_cache_invalid_all_and_close_dirs(1);
+#endif
+
+    /*
+     * Fill out the startup info and try create the process.
+     */
+    memset(&ProcInfo, 0, sizeof(ProcInfo));
+    memset(&StartupInfo, 0, sizeof(StartupInfo));
+    StartupInfo.cb = sizeof(StartupInfo);
+    GetStartupInfoW(&StartupInfo);
+    if (!CreateProcessW(wszImageName, pwszCommandLine, NULL /*pProcSecAttr*/, NULL /*pThreadSecAttr*/,
+                        TRUE /*fInheritHandles*/, CREATE_UNICODE_ENVIRONMENT, pwszzEnvironment, NULL /*pwsz*/,
+                        &StartupInfo, &ProcInfo))
+        ON(fatal, NILF, _("MkWinChildReExecMake: CreateProcessW failed: %u\n"), GetLastError());
+    CloseHandle(ProcInfo.hThread);
+
+    /*
+     * Wait for it to complete and forward the status code to our parent.
+     */
+    for (;;)
+    {
+        DWORD dwExitCode = -2222;
+        DWORD dwStatus = WaitForSingleObject(ProcInfo.hProcess, INFINITE);
+        if (   dwStatus == WAIT_IO_COMPLETION
+            || dwStatus == WAIT_TIMEOUT /* whatever */)
+            continue; /* however unlikely, these aren't fatal. */
+
+        /* Get the status code and terminate. */
+        if (dwStatus == WAIT_OBJECT_0)
+        {
+            if (!GetExitCodeProcess(ProcInfo.hProcess, &dwExitCode))
+            {
+                ON(fatal, NILF, _("MkWinChildReExecMake: GetExitCodeProcess failed: %u\n"), GetLastError());
+                dwExitCode = -2222;
+            }
+        }
+        else if (dwStatus)
+            dwExitCode = dwStatus;
+
+        CloseHandle(ProcInfo.hProcess);
+        for (;;)
+            exit(dwExitCode);
+    }
+}
+
+#ifdef WITH_RW_LOCK
+/** Serialization with kmkbuiltin_redirect. */
+void MkWinChildExclusiveAcquire(void)
+{
+    AcquireSRWLockExclusive(&g_RWLock);
+}
+
+/** Serialization with kmkbuiltin_redirect. */
+void MkWinChildExclusiveRelease(void)
+{
+    ReleaseSRWLockExclusive(&g_RWLock);
+}
+#endif /* WITH_RW_LOCK */
+
+/**
+ * Implementation of the CLOSE_ON_EXEC macro.
+ *
+ * @returns errno value.
+ * @param   fd          The file descriptor to hide from children.
+ */
+int MkWinChildUnrelatedCloseOnExec(int fd)
+{
+    if (fd >= 0)
+    {
+        HANDLE hNative = (HANDLE)_get_osfhandle(fd);
+        if (hNative != INVALID_HANDLE_VALUE && hNative != NULL)
+        {
+            if (SetHandleInformation(hNative, HANDLE_FLAG_INHERIT /*clear*/ , 0 /*set*/))
+                return 0;
+        }
+        return errno;
+    }
+    return EINVAL;
+}
+
diff --git a/src/kmk/w32/winchildren.h b/src/kmk/w32/winchildren.h
new file mode 100644
index 0000000..e70bd1e
--- /dev/null
+++ b/src/kmk/w32/winchildren.h
@@ -0,0 +1,115 @@
+/* $Id: winchildren.h 3313 2020-03-16 02:31:38Z bird $ */
+/** @file
+ * Child process creation and management for kmk.
+ */
+
+/*
+ * Copyright (c) 2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef INCLUDED_WINCHILDREN_H
+#define INCLUDED_WINCHILDREN_H
+
+/** Child processor group allocator state. */
+typedef struct MKWINCHILDCPUGROUPALLOCSTATE
+{
+    /** The group index for the worker allocator.
+     * This is ever increasing and must be modded by g_cProcessorGroups. */
+    unsigned int    idxGroup;
+    /** The processor in group index for the worker allocator. */
+    unsigned int    idxProcessorInGroup;
+} MKWINCHILDCPUGROUPALLOCSTATE;
+/** Pointer to a CPU group allocator state.   */
+typedef MKWINCHILDCPUGROUPALLOCSTATE *PMKWINCHILDCPUGROUPALLOCSTATE;
+
+#ifdef DECLARE_HANDLE
+/**
+ * A childcare worker pipe.
+ */
+typedef struct WINCCWPIPE
+{
+    /** My end of the pipe. */
+    HANDLE              hPipeMine;
+    /** The child end of the pipe. */
+    HANDLE              hPipeChild;
+    /** The event for asynchronous reading. */
+    HANDLE              hEvent;
+    /** Which pipe this is (1 == stdout, 2 == stderr). */
+    unsigned char       iWhich;
+    /** Set if we've got a read pending already. */
+    BOOL                fReadPending;
+    /** Indicator that we've written out something.  This is cleared before
+     * we start catching output from a new child and use in the CL.exe
+     * supression heuristics. */
+    BOOL                fHaveWrittenOut;
+    /** Number of bytes at the start of the buffer that we've already
+     * written out.  We try write out whole lines. */
+    DWORD               cbWritten;
+    /** The buffer offset of the read currently pending. */
+    DWORD               offPendingRead;
+    /** Read buffer size. */
+    DWORD               cbBuffer;
+    /** The read buffer allocation. */
+    unsigned char      *pbBuffer;
+    /** Overlapped I/O structure. */
+    OVERLAPPED          Overlapped;
+} WINCCWPIPE;
+#endif
+
+typedef struct WINCCWPIPE *PWINCCWPIPE;
+
+void    MkWinChildInit(unsigned int cJobSlot);
+void    MkWinChildReExecMake(char **papszArgs, char **papszEnv);
+intptr_t MkWinChildGetCompleteEventHandle(void);
+int     MkWinChildCreate(char **papszArgs, char **papszEnv, const char *pszShell, struct child *pMkChild, pid_t *pPid);
+int     MkWinChildCreateWithStdOutPipe(char **papszArgs, char **papszEnv, int fdErr, pid_t *pPid, int *pfdReadPipe);
+void    MkWinChildInitCpuGroupAllocator(PMKWINCHILDCPUGROUPALLOCSTATE pState);
+unsigned int MkWinChildAllocateCpuGroup(PMKWINCHILDCPUGROUPALLOCSTATE pState);
+
+#ifdef KMK
+struct KMKBUILTINENTRY;
+int     MkWinChildCreateBuiltIn(struct KMKBUILTINENTRY const *pBuiltIn, int cArgs, char **papszArgs,
+                                char **papszEnv, struct child *pMkChild, pid_t *pPid);
+int     MkWinChildCreateAppend(const char *pszFilename, char **ppszAppend, size_t cbAppend, int fTruncate,
+                               struct child *pMkChild, pid_t *pPid);
+
+int     MkWinChildCreateSubmit(intptr_t hEvent, void *pvSubmitWorker, PWINCCWPIPE pStdOut, PWINCCWPIPE pStdErr,
+                               struct child *pMkChild, pid_t *pPid);
+PWINCCWPIPE MkWinChildcareCreateWorkerPipe(unsigned iWhich, unsigned int idxWorker);
+void    MkWinChildcareWorkerDrainPipes(struct WINCHILD *pChild, PWINCCWPIPE pStdOut, PWINCCWPIPE pStdErr);
+void    MkWinChildcareDeleteWorkerPipe(PWINCCWPIPE pPipe);
+
+int     MkWinChildCreateRedirect(intptr_t hProcess, pid_t *pPid);
+# ifdef DECLARE_HANDLE
+int     MkWinChildBuiltInExecChild(void *pvWorker, const char *pszExecutable, char **papszArgs, BOOL fQuotedArgv,
+                                   char **papszEnvVars, const char *pszCwd, BOOL pafReplace[3], HANDLE pahReplace[3]);
+# endif
+#endif /* KMK */
+int     MkWinChildKill(pid_t pid, int iSignal, struct child *pMkChild);
+int     MkWinChildWait(int fBlock, pid_t *pPid, int *piExitCode, int *piSignal, int *pfCoreDumped, struct child **ppMkChild);
+void    MkWinChildExclusiveAcquire(void);
+void    MkWinChildExclusiveRelease(void);
+
+#undef  CLOSE_ON_EXEC
+#define CLOSE_ON_EXEC(a_fd) MkWinChildUnrelatedCloseOnExec(a_fd)
+int     MkWinChildUnrelatedCloseOnExec(int fd);
+
+
+#endif
+
diff --git a/src/lib/Makefile.kmk b/src/lib/Makefile.kmk
new file mode 100644
index 0000000..a281d28
--- /dev/null
+++ b/src/lib/Makefile.kmk
@@ -0,0 +1,109 @@
+# $Id: Makefile.kmk 3551 2022-01-29 02:57:33Z bird $
+## @file
+# Sub-makefile for various libraries and stuff.
+#
+
+#
+# Copyright (c) 2006-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ../..
+include $(KBUILD_PATH)/subheader.kmk
+
+LIBRARIES += kDep
+kDep_TEMPLATE = LIB
+kDep_DEFS.win += NEED_ISBLANK=1 __WIN32__=1
+kDep_SOURCES = kDep.c
+kDep_NOINST = 1
+
+LIBRARIES += kUtil
+kUtil_TEMPLATE = LIB
+kUtil_DEFS.win = __WIN__
+kUtil_SOURCES = \
+	crc32.c \
+	md5.c \
+	maybe_con_write.c \
+	maybe_con_fwrite.c \
+	is_console.c \
+       dos2unix.c \
+	kbuild_version.c \
+	version_compare.c
+kUtil_SOURCES.win = \
+	get_codepage.c \
+	msc_buffered_printf.c \
+	win_get_processor_group_active_mask.c \
+	nt_fullpath.c \
+	nt_fullpath_cached.c \
+	quote_argv.c \
+	quoted_spawn.c \
+       nt/nthlpcore.c \
+       nt/nthlpfs.c \
+       nt/ntdir.c \
+       nt/ntstat.c \
+       nt/ntunlink.c \
+       nt/ntutimes.c \
+       nt/nt_child_inject_standard_handles.c \
+       nt/fts-nt.c \
+       nt/kFsCache.c \
+       kStuff/kHlp/CRT/kHlpCRTString.cpp \
+       kStuff/kHlp/CRT/kHlpCRTAlloc.cpp
+kUtil_SOURCES.solaris = \
+	restartable-syscall-wrappers.c
+#kUtil_SOURCES.linux = \
+#	restartable-syscall-wrappers.c
+kUtil_NOINST = 1
+
+kbuild_version.c_DEFS = KBUILD_SVN_REV=$(KBUILD_SVN_REV)
+
+LIBRARIES.win += kWinStartup
+kWinStartup_TEMPLATE = LIB
+kWinStartup_SOURCES = startuphacks-win.c
+kWinStartup_NOINST = 1
+
+PROGRAMS += wrapper
+wrapper_TEMPLATE = BIN
+wrapper_SOURCES = wrapper.c
+wrapper_NOINST = 1
+
+PROGRAMS.win += tstNtStat
+tstNtStat_TEMPLATE = BIN
+tstNtStat_SOURCES = nt/tstNtStat.c
+tstNtStat_LIBS = $(LIB_KUTIL)
+tstNtStat_NOINST = 1
+
+PROGRAMS.win += tstNtFts
+tstNtFts_TEMPLATE = BIN
+tstNtFts_SOURCES = nt/tstNtFts.c nt/fts-nt.c
+tstNtFts_LIBS = $(LIB_KUTIL)
+tstNtFts_NOINST = 1
+
+PROGRAMS.win += tstkFsCache
+tstkFsCache_TEMPLATE = BIN
+tstkFsCache_SOURCES = nt/tstkFsCache.c
+tstkFsCache_LIBS = $(LIB_KUTIL)
+tstkFsCache_NOINST = 1
+
+PROGRAMS += tstVersionCompare
+tstVersionCompare_TEMPLATE = BIN
+tstVersionCompare_SOURCES = version_compare.c
+tstVersionCompare_DEFS = TEST
+tstVersionCompare_NOINST = 1
+
+include $(FILE_KBUILD_SUB_FOOTER)
+
diff --git a/src/lib/console.h b/src/lib/console.h
new file mode 100644
index 0000000..01408a8
--- /dev/null
+++ b/src/lib/console.h
@@ -0,0 +1,55 @@
+/* $Id: console.h 3547 2022-01-29 02:39:47Z bird $ */
+/** @file
+ * console related functions.
+ */
+
+/*
+ * Copyright (c) 2016-2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+#ifndef ___lib_console_h___
+#define ___lib_console_h___
+
+#include <stdio.h>
+#ifdef _MSC_VER
+# include <io.h>
+# ifndef ssize_t
+typedef intptr_t ssize_t;
+# endif
+#else
+# include <unistd.h>
+#endif
+#ifdef KBUILD_OS_WINDOWS
+# include "get_codepage.h"
+#endif
+
+
+#ifdef KBUILD_OS_WINDOWS
+extern int      is_console_handle(intptr_t hHandle);
+#endif
+extern int      is_console(int fd);
+extern ssize_t  maybe_con_write(int fd, void const *pvBuf, size_t cbToWrite);
+extern size_t   maybe_con_fwrite(void const *pvBuf, size_t cbUnit, size_t cUnits, FILE *pFile);
+#endif
+
diff --git a/src/lib/crc32.c b/src/lib/crc32.c
new file mode 100644
index 0000000..5a289f5
--- /dev/null
+++ b/src/lib/crc32.c
@@ -0,0 +1,170 @@
+/*	$NetBSD: crc.c,v 1.18 2006/09/04 20:01:10 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * James W. Williams of NASA Goddard Space Flight Center.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*#if HAVE_NBTOOL_CONFIG_H
+#include "nbtool_config.h"
+#endif*/
+
+/*#include <sys/cdefs.h> 
+#if defined(__RCSID) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)crc.c	8.1 (Berkeley) 6/17/93";
+#else 
+__RCSID("$NetBSD: crc.c,v 1.18 2006/09/04 20:01:10 dsl Exp $");
+#endif
+#endif*/ /* not lint */
+
+#include <sys/types.h>
+/*#include <unistd.h>
+
+#include "extern.h"*/
+
+#include "mytypes.h"
+#define u_int32_t uint32_t
+
+static const u_int32_t crctab[] = {
+	0x0,
+	0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
+	0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6,
+	0x2b4bcb61, 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd,
+	0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9, 0x5f15adac,
+	0x5bd4b01b, 0x569796c2, 0x52568b75, 0x6a1936c8, 0x6ed82b7f,
+	0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3, 0x709f7b7a,
+	0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
+	0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58,
+	0xbaea46ef, 0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033,
+	0xa4ad16ea, 0xa06c0b5d, 0xd4326d90, 0xd0f37027, 0xddb056fe,
+	0xd9714b49, 0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95,
+	0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1, 0xe13ef6f4,
+	0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0,
+	0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5,
+	0x2ac12072, 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16,
+	0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca, 0x7897ab07,
+	0x7c56b6b0, 0x71159069, 0x75d48dde, 0x6b93dddb, 0x6f52c06c,
+	0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1,
+	0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
+	0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b,
+	0xbb60adfc, 0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698,
+	0x832f1041, 0x87ee0df6, 0x99a95df3, 0x9d684044, 0x902b669d,
+	0x94ea7b2a, 0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e,
+	0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2, 0xc6bcf05f,
+	0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34,
+	0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80,
+	0x644fc637, 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb,
+	0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f, 0x5c007b8a,
+	0x58c1663d, 0x558240e4, 0x51435d53, 0x251d3b9e, 0x21dc2629,
+	0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5, 0x3f9b762c,
+	0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
+	0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e,
+	0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65,
+	0xeba91bbc, 0xef68060b, 0xd727bbb6, 0xd3e6a601, 0xdea580d8,
+	0xda649d6f, 0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3,
+	0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7, 0xae3afba2,
+	0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71,
+	0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74,
+	0x857130c3, 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640,
+	0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c, 0x7b827d21,
+	0x7f436096, 0x7200464f, 0x76c15bf8, 0x68860bfd, 0x6c47164a,
+	0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e, 0x18197087,
+	0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
+	0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d,
+	0x2056cd3a, 0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce,
+	0xcc2b1d17, 0xc8ea00a0, 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb,
+	0xdbee767c, 0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18,
+	0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4, 0x89b8fd09,
+	0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662,
+	0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf,
+	0xa2f33668, 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
+};
+
+#if 0
+/*
+ * Compute a POSIX 1003.2 checksum.  This routine has been broken out so that
+ * other programs can use it.  It takes a file descriptor to read from and
+ * locations to store the crc and the number of bytes read.  It returns 0 on
+ * success and 1 on failure.  Errno is set on failure.
+ */
+int
+crc(int fd, u_int32_t *cval, off_t *clen)
+{
+	u_char *p;
+	int nr;
+	u_int32_t thecrc;
+	off_t len;
+	u_char buf[16 * 1024];
+#endif 
+#define	COMPUTE(var, ch)	(var) = (var) << 8 ^ crctab[(var) >> 24 ^ (ch)]
+#if 0
+
+	thecrc = 0;
+	len = 0;
+	while ((nr = read(fd, buf, sizeof(buf))) > 0)
+		for (len += nr, p = buf; nr--; ++p) {
+			COMPUTE(thecrc, *p);
+		}
+	if (nr < 0)
+		return 1;
+
+	*clen = len;
+
+	/* Include the length of the file. */
+	for (; len != 0; len >>= 8) {
+		COMPUTE(thecrc, len & 0xff);
+	}
+
+	*cval = ~thecrc;
+	return 0;
+}
+#endif
+
+/* These two are rather more useful to the outside world */
+
+uint32_t
+crc32(uint32_t thecrc, const void *buf, size_t len)
+{
+	const uint8_t *p = buf;
+
+	for (p = buf; len; p++, len--)
+		COMPUTE(thecrc, *p);
+	return thecrc;
+}
+
+#if 0
+uint32_t
+crc_byte(uint32_t thecrc, unsigned int byte_val)
+{
+	COMPUTE(thecrc, byte_val & 0xff);
+	return thecrc;
+}
+#endif
diff --git a/src/lib/crc32.h b/src/lib/crc32.h
new file mode 100644
index 0000000..878b015
--- /dev/null
+++ b/src/lib/crc32.h
@@ -0,0 +1,7 @@
+#ifndef ___crc32_h__
+#define ___crc32_h__
+
+#include "mytypes.h"
+uint32_t crc32(uint32_t, const void *, size_t);
+
+#endif
diff --git a/src/lib/dos2unix.c b/src/lib/dos2unix.c
new file mode 100644
index 0000000..308a58f
--- /dev/null
+++ b/src/lib/dos2unix.c
@@ -0,0 +1,302 @@
+/* $Id: dos2unix.c 3114 2017-10-29 18:02:04Z bird $ */
+/** @file
+ * dos2unix - Line ending conversion routines.
+ */
+
+/*
+ * Copyright (c) 2017 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "dos2unix.h"
+#include <k/kDefs.h>
+#include <errno.h>
+#include <fcntl.h>
+#if K_OS == K_OS_WINDOWS
+# include <io.h>
+#else
+# include <unistd.h>
+#endif
+#include <assert.h>
+
+#ifndef O_BINARY
+# ifdef _O_BINARY
+#  define O_BINARY   _O_BINARY
+# else
+#  define O_BINARY   0
+# endif
+#endif
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+#define STACK_BUF_SIZE  0x20000
+
+#define DOS2UNIX_LF     0x0a
+#define DOS2UNIX_CR     0x0d
+
+
+
+/**
+ * Does a line ending analysis of the given file.
+ *
+ * @returns 0 on success, errno value on open or read error.
+ * @param   pszFilename         The path to the file
+ * @param   pfStyle             Where to return the DOS2UNIX_STYLE_XXX and
+ *                              DOS2UNIX_F_XXX flags.
+ * @param   pcDosEols           Where to return the number of DOS end-of-line
+ *                              sequences found.  Optional.
+ * @param   pcUnixEols          Where to return the number of UNIX end-of-line
+ *                              sequences found.
+ */
+int dos2unix_analyze_file(const char *pszFilename, KU32 *pfStyle, KSIZE *pcDosEols, KSIZE *pcUnixEols)
+{
+    int iRet = 0;
+    int fd = open(pszFilename, O_RDONLY | O_BINARY);
+    if (fd >= 0)
+    {
+        iRet = dos2unix_analyze_fd(fd, pfStyle, pcDosEols, pcUnixEols);
+        close(fd);
+    }
+    else
+    {
+        iRet = errno;
+        *pfStyle = DOS2UNIX_STYLE_NONE;
+        if (pcUnixEols)
+            *pcUnixEols = 0;
+        if (pcDosEols)
+            *pcDosEols = 0;
+    }
+    return iRet;
+}
+
+/**
+ * Does a line ending analysis of the given file descriptor.
+ *
+ * @returns 0 on success, errno value on open or read error.
+ * @param   fd                  The file descriptor to analyze.  Caller must
+ *                              place this as the desired position.
+ * @param   pfStyle             Where to return the DOS2UNIX_STYLE_XXX and
+ *                              DOS2UNIX_F_XXX flags.
+ * @param   pcDosEols           Where to return the number of DOS end-of-line
+ *                              sequences found.  Optional.
+ * @param   pcUnixEols          Where to return the number of UNIX end-of-line
+ *                              sequences found.
+ */
+int dos2unix_analyze_fd(int fd, KU32 *pfStyle, KSIZE *pcDosEols, KSIZE *pcUnixEols)
+{
+    KSIZE   cUnixEols  = 0;
+    KSIZE   cDosEols   = 0;
+    KSIZE   cLoneCrs   = 0;
+    KBOOL   fPendingCr = K_FALSE;
+    int     iRet       = 0;
+
+    /*
+     * Do the analysis.
+     */
+    *pfStyle = DOS2UNIX_STYLE_NONE;
+    for (;;)
+    {
+        char achBuf[STACK_BUF_SIZE];
+        int  cchRead = read(fd, achBuf, sizeof(achBuf));
+        if (cchRead > 0)
+        {
+            int off = 0;
+            if (fPendingCr)
+            {
+                if (achBuf[0] == DOS2UNIX_LF)
+                {
+                    off++;
+                    cDosEols++;
+                }
+                else
+                    cLoneCrs++;
+                fPendingCr = K_FALSE;
+            }
+
+            while (off < cchRead)
+            {
+                char ch = achBuf[off++];
+                if ((unsigned char)ch > (unsigned char)DOS2UNIX_CR)
+                { /* likely */ }
+                else if (ch == DOS2UNIX_CR)
+                {
+                    if (off < cchRead && achBuf[off] == DOS2UNIX_CR)
+                        cDosEols++;
+                    else
+                    {
+                        fPendingCr = K_TRUE;
+                        while (off < cchRead)
+                        {
+                            ch = achBuf[off++];
+                            if (ch != DOS2UNIX_CR)
+                            {
+                                if (ch == DOS2UNIX_LF)
+                                    cDosEols++;
+                                else
+                                    cLoneCrs++;
+                                fPendingCr = K_FALSE;
+                                break;
+                            }
+                            cLoneCrs++;
+                        }
+                    }
+                }
+                else if (ch == DOS2UNIX_LF)
+                    cUnixEols++;
+                else if (ch == '\0')
+                    *pfStyle |= DOS2UNIX_F_BINARY;
+            }
+        }
+        else
+        {
+            if (cchRead < 0)
+                iRet = errno;
+            if (fPendingCr)
+                cLoneCrs++;
+            break;
+        }
+    }
+
+    /*
+     * Set return values.
+     */
+    if (cUnixEols > 0 && cDosEols == 0)
+        *pfStyle |= DOS2UNIX_STYLE_UNIX;
+    else if (cDosEols > 0 && cUnixEols == 0)
+        *pfStyle |= DOS2UNIX_STYLE_DOS;
+    else if (cDosEols != 0 && cUnixEols != 0)
+        *pfStyle |= DOS2UNIX_STYLE_MIXED;
+    if (pcUnixEols)
+        *pcUnixEols = cUnixEols;
+    if (pcDosEols)
+        *pcDosEols = cDosEols;
+
+    return iRet;
+}
+
+
+/**
+ * Converts a buffer to unix line (LF) endings.
+ *
+ * @retval  K_TRUE if pending CR.  The caller must handle this case.
+ * @retval  K_FALSE if no pending CR.
+ *
+ * @param   pchSrc          The input buffer.
+ * @param   cchSrc          Number of characters to convert from the input
+ *                          buffer.
+ * @param   pchDst          The output buffer.  This must be at least as big as
+ *                          the input.  It is okay if this overlaps with the
+ *                          source buffer, as long as this is at the same or a
+ *                          lower address.
+ * @param   pcchDst         Where to return the number of characters in the
+ *                          output buffer.
+ */
+KBOOL dos2unix_convert_to_unix(const char *pchSrc, KSIZE cchSrc, char *pchDst, KSIZE *pcchDst)
+{
+    KSIZE offDst = 0;
+    while (cchSrc-- > 0)
+    {
+        char ch = *pchSrc++;
+        if ((unsigned char)ch != (unsigned char)DOS2UNIX_CR)
+            pchDst[offDst++] = ch;
+        else if (cchSrc > 0 && *pchSrc == DOS2UNIX_LF)
+        {
+            pchDst[offDst++] = DOS2UNIX_LF;
+            cchSrc--;
+            pchSrc++;
+        }
+        else if (cchSrc == 0)
+        {
+            *pcchDst = offDst;
+            return K_TRUE;
+        }
+        else
+            pchDst[offDst++] = ch;
+    }
+
+    *pcchDst = offDst;
+    return K_FALSE;
+}
+
+
+/**
+ * Converts a buffer to DOS (CRLF) endings.
+ *
+ * @retval  K_TRUE if pending CR.  The caller must handle this case.
+ * @retval  K_FALSE if no pending CR.
+ *
+ * @param   pchSrc          The input buffer.
+ * @param   cchSrc          Number of characters to convert from the input
+ *                          buffer.
+ * @param   pchDst          The output buffer.  This must be at least _twice_ as
+ *                          big as the input.  It is okay if the top half of the
+ *                          buffer overlaps with the source buffer.
+ * @param   pcchDst         Where to return the number of characters in the
+ *                          output buffer.
+ */
+KBOOL dos2unix_convert_to_dos(const char *pchSrc, KSIZE cchSrc, char *pchDst, KSIZE *pcchDst)
+{
+    KSIZE offDst = 0;
+    while (cchSrc-- > 0)
+    {
+        char ch = *pchSrc++;
+        if ((unsigned char)ch > (unsigned char)DOS2UNIX_CR)
+            pchDst[offDst++] = ch;
+        else if (ch == DOS2UNIX_CR)
+        {
+            /* We treat CR kind of like an escape character. */
+            do
+            {
+                if (cchSrc > 0)
+                {
+                    pchDst[offDst++] = ch;
+                    cchSrc--;
+                    ch = *pchSrc++;
+                }
+                else
+                {
+                    *pcchDst = offDst;
+                    return K_TRUE;
+                }
+            } while (ch == DOS2UNIX_CR);
+            pchDst[offDst++] = ch;
+        }
+        else if (ch == DOS2UNIX_LF)
+        {
+            pchDst[offDst++] = DOS2UNIX_CR;
+            pchDst[offDst++] = DOS2UNIX_LF;
+        }
+        else
+            pchDst[offDst++] = ch;
+    }
+
+    *pcchDst = offDst;
+    return K_FALSE;
+}
+
diff --git a/src/lib/dos2unix.h b/src/lib/dos2unix.h
new file mode 100644
index 0000000..bb85137
--- /dev/null
+++ b/src/lib/dos2unix.h
@@ -0,0 +1,50 @@
+/* $Id: dos2unix.h 3114 2017-10-29 18:02:04Z bird $ */
+/** @file
+ * dos2unix - Line ending conversion routines.
+ */
+
+/*
+ * Copyright (c) 2017 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+#ifndef ___lib_dos2unix_h___
+#define ___lib_dos2unix_h___
+
+#include <k/kTypes.h>
+
+#define DOS2UNIX_STYLE_NONE     0x00
+#define DOS2UNIX_STYLE_DOS      0x01
+#define DOS2UNIX_STYLE_UNIX     0x02
+#define DOS2UNIX_STYLE_MIXED    0x03
+#define DOS2UNIX_STYLE_MASK     0x03
+#define DOS2UNIX_F_BINARY       0x80 /**< Probably a binary file. */
+
+int dos2unix_analyze_file(const char *pszFilename, KU32 *pfStyle, KSIZE *pcDosEols, KSIZE *pcUnixEols);
+int dos2unix_analyze_fd(int fd, KU32 *pfStyle, KSIZE *pcDosEols, KSIZE *pcUnixEols);
+
+KBOOL dos2unix_convert_to_unix(const char *pchSrc, KSIZE cchSrc, char *pchDst, KSIZE *pcchDst);
+KBOOL dos2unix_convert_to_dos(const char *pchSrc, KSIZE cchSrc, char *pchDst, KSIZE *pcchDst);
+
+#endif
+
diff --git a/src/lib/get_codepage.c b/src/lib/get_codepage.c
new file mode 100644
index 0000000..74cc211
--- /dev/null
+++ b/src/lib/get_codepage.c
@@ -0,0 +1,66 @@
+/* $Id: get_codepage.c 3546 2022-01-29 02:37:06Z bird $ */
+/** @file
+ * get_codepage - Gets the current codepage (as per CRT).
+ */
+
+/*
+ * Copyright (c) 2016-2021 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "console.h"
+#include <Windows.h>
+#include <locale.h>
+#if _MSC_VER < 1900
+_CRTIMP UINT __cdecl ___lc_codepage_func(void);
+#endif
+
+
+/**
+ * Returns the active codepage as per the CRT.
+ *
+ * @returns Code page.
+ */
+unsigned get_crt_codepage(void)
+{
+    /* We use the CRT internal function ___lc_codepage_func for getting
+       the codepage.  It was made public/official in UCRT. */
+    unsigned uCodepage = ___lc_codepage_func();
+    if (uCodepage == 0)
+        uCodepage = GetACP();
+    return uCodepage;
+}
+
+
+/**
+ * Returns GetACP().
+ */
+unsigned get_ansi_codepage(void)
+{
+    return GetACP();
+}
+
diff --git a/src/lib/get_codepage.h b/src/lib/get_codepage.h
new file mode 100644
index 0000000..36bb8e5
--- /dev/null
+++ b/src/lib/get_codepage.h
@@ -0,0 +1,42 @@
+/* $Id: get_codepage.h 3546 2022-01-29 02:37:06Z bird $ */
+/** @file
+ * Codepage related functions.
+ */
+
+/*
+ * Copyright (c) 2021 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+#ifndef ___lib_get_codepage_h___
+#define ___lib_get_codepage_h___
+
+#include <locale.h>
+
+extern unsigned get_crt_codepage(void);
+extern unsigned get_ansi_codepage(void);
+
+#define MY_CP_UTF8 65001
+
+#endif
+
diff --git a/src/lib/is_console.c b/src/lib/is_console.c
new file mode 100644
index 0000000..c9f7bdc
--- /dev/null
+++ b/src/lib/is_console.c
@@ -0,0 +1,75 @@
+/* $Id: is_console.c 3188 2018-03-24 15:32:26Z bird $ */
+/** @file
+ * is_console - checks if a file descriptor is the console.
+ */
+
+/*
+ * Copyright (c) 2016-2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "console.h"
+#ifdef KBUILD_OS_WINDOWS
+# include <Windows.h>
+#endif
+#ifdef _MSC_VER
+# include <io.h>
+#else
+# include <unistd.h>
+#endif
+
+
+#ifdef KBUILD_OS_WINDOWS
+/**
+ * Checks if @a hHandle is a console handle.
+ * @returns 1 if it is, 0 if not.
+ */
+int is_console_handle(intptr_t hHandle)
+{
+    DWORD fMode;
+    if (GetConsoleMode((HANDLE)hHandle, &fMode))
+        return 1;
+    return 0;
+}
+#endif
+
+/**
+ * Checks if @a fd is a console handle.
+ * @returns 1 if it is, 0 if not.
+ */
+int is_console(int fd)
+{
+#ifdef KBUILD_OS_WINDOWS
+    intptr_t hNative = _get_osfhandle(fd);
+    if (hNative != (intptr_t)INVALID_HANDLE_VALUE)
+        return is_console_handle(hNative);
+    return 0;
+#else
+    return isatty(fd);
+#endif
+}
+
diff --git a/src/lib/kDep.c b/src/lib/kDep.c
new file mode 100644
index 0000000..5ee053e
--- /dev/null
+++ b/src/lib/kDep.c
@@ -0,0 +1,726 @@
+/* $Id: kDep.c 3315 2020-03-31 01:12:19Z bird $ */
+/** @file
+ * kDep - Common Dependency Managemnt Code.
+ */
+
+/*
+ * Copyright (c) 2004-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#ifdef KMK /* For when it gets compiled and linked into kmk. */
+# include "makeint.h"
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+#include <limits.h>
+#include <sys/stat.h>
+#include "k/kDefs.h"
+#include "k/kTypes.h"
+#if K_OS == K_OS_WINDOWS
+# define USE_WIN_MMAP
+# include <io.h>
+# include <Windows.h>
+# include "nt_fullpath.h"
+# include "nt/ntstat.h"
+#else
+# include <dirent.h>
+# include <unistd.h>
+# include <stdint.h>
+#endif
+
+#include "kDep.h"
+
+#ifdef KWORKER
+extern int kwFsPathExists(const char *pszPath);
+#endif
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/* For the GNU/hurd weirdo. */
+#if !defined(PATH_MAX) && !defined(_MAX_PATH)
+# define PATH_MAX 4096
+#endif
+
+
+/**
+ * Initializes the dep instance.
+ *
+ * @param   pThis       The dep instance to init.
+ */
+void depInit(PDEPGLOBALS pThis)
+{
+    pThis->pDeps = NULL;
+}
+
+
+/**
+ * Cleans up the dep instance (frees resources).
+ *
+ * @param   pThis       The dep instance to cleanup.
+ */
+void depCleanup(PDEPGLOBALS pThis)
+{
+    PDEP pDep = pThis->pDeps;
+    pThis->pDeps = NULL;
+    while (pDep)
+    {
+        PDEP pFree = pDep;
+        pDep = pDep->pNext;
+        free(pFree);
+    }
+}
+
+
+/**
+ * Corrects all slashes to unix slashes.
+ *
+ * @returns pszFilename.
+ * @param   pszFilename     The filename to correct.
+ */
+static char *fixslash(char *pszFilename)
+{
+    char *psz = pszFilename;
+    while ((psz = strchr(psz, '\\')) != NULL)
+        *psz++ = '/';
+    return pszFilename;
+}
+
+
+#if K_OS == K_OS_OS2
+
+/**
+ * Corrects the case of a path.
+ *
+ * @param   pszPath     Pointer to the path, both input and output.
+ *                      The buffer must be able to hold one more byte than the string length.
+ */
+static void fixcase(char *pszFilename)
+{
+    return;
+}
+
+#elif K_OS != K_OS_WINDOWS
+
+/**
+ * Corrects the case of a path.
+ *
+ * @param   pszPath     Pointer to the path, both input and output.
+ */
+static void fixcase(char *pszFilename)
+{
+    char *psz;
+
+    /*
+     * Skip the root.
+     */
+    psz = pszFilename;
+    while (*psz == '/')
+        psz++;
+
+    /*
+     * Iterate all the components.
+     */
+    while (*psz)
+    {
+        char  chSlash;
+        struct stat s;
+        char   *pszStart = psz;
+
+        /*
+         * Find the next slash (or end of string) and terminate the string there.
+         */
+        while (*psz != '/' && *psz)
+            psz++;
+        chSlash = *psz;
+        *psz = '\0';
+
+        /*
+         * Does this part exist?
+         * If not we'll enumerate the directory and search for an case-insensitive match.
+         */
+        if (stat(pszFilename, &s))
+        {
+            struct dirent  *pEntry;
+            DIR            *pDir;
+            if (pszStart == pszFilename)
+                pDir = opendir(*pszFilename ? pszFilename : ".");
+            else
+            {
+                pszStart[-1] = '\0';
+                pDir = opendir(pszFilename);
+                pszStart[-1] = '/';
+            }
+            if (!pDir)
+            {
+                *psz = chSlash;
+                break; /* giving up, if we fail to open the directory. */
+            }
+
+            while ((pEntry = readdir(pDir)) != NULL)
+            {
+                if (!strcasecmp(pEntry->d_name, pszStart))
+                {
+                    strcpy(pszStart, pEntry->d_name);
+                    break;
+                }
+            }
+            closedir(pDir);
+            if (!pEntry)
+            {
+                *psz = chSlash;
+                break;  /* giving up if not found. */
+            }
+        }
+
+        /* restore the slash and press on. */
+        *psz = chSlash;
+        while (*psz == '/')
+            psz++;
+    }
+
+    return;
+}
+
+#endif /* !OS/2 && !Windows */
+
+
+/**
+ * 'Optimizes' and corrects the dependencies.
+ */
+void depOptimize(PDEPGLOBALS pThis, int fFixCase, int fQuiet, const char *pszIgnoredExt)
+{
+    /*
+     * Walk the list correct the names and re-insert them.
+     */
+    size_t  cchIgnoredExt = pszIgnoredExt ? strlen(pszIgnoredExt) : 0;
+    PDEP    pDepOrg = pThis->pDeps;
+    PDEP    pDep = pThis->pDeps;
+    pThis->pDeps = NULL;
+    for (; pDep; pDep = pDep->pNext)
+    {
+#ifndef PATH_MAX
+        char        szFilename[_MAX_PATH + 1];
+#else
+        char        szFilename[PATH_MAX + 1];
+#endif
+        char       *pszFilename;
+#if !defined(KWORKER) && !defined(KMK)
+        struct stat s;
+#endif
+
+        /*
+         * Skip some fictive names like <built-in> and <command line>.
+         */
+        if (    pDep->szFilename[0] == '<'
+            &&  pDep->szFilename[pDep->cchFilename - 1] == '>')
+            continue;
+        pszFilename = pDep->szFilename;
+
+        /*
+         * Skip pszIgnoredExt if given.
+         */
+        if (   pszIgnoredExt
+            && pDep->cchFilename > cchIgnoredExt
+            && memcmp(&pDep->szFilename[pDep->cchFilename - cchIgnoredExt], pszIgnoredExt, cchIgnoredExt) == 0)
+            continue;
+
+#if K_OS != K_OS_OS2 && K_OS != K_OS_WINDOWS
+        /*
+         * Skip any drive letters from compilers running in wine.
+         */
+        if (pszFilename[1] == ':')
+            pszFilename += 2;
+#endif
+
+        /*
+         * The microsoft compilers are notoriously screwing up the casing.
+         * This will screw up kmk (/ GNU Make).
+         */
+        if (fFixCase)
+        {
+#if K_OS == K_OS_WINDOWS
+            nt_fullpath_cached(pszFilename, szFilename, sizeof(szFilename));
+            fixslash(szFilename);
+#else
+            strcpy(szFilename, pszFilename);
+            fixslash(szFilename);
+            fixcase(szFilename);
+#endif
+            pszFilename = szFilename;
+        }
+
+        /*
+         * Check that the file exists before we start depending on it.
+         */
+        errno = 0;
+#ifdef KWORKER
+        if (!kwFsPathExists(pszFilename))
+#elif defined(KMK)
+        if (!file_exists_p(pszFilename))
+#elif K_OS == K_OS_WINDOWS
+        if (birdStatModTimeOnly(pszFilename, &s.st_mtim, 1 /*fFollowLink*/) != 0)
+#else
+        if (stat(pszFilename, &s) != 0)
+#endif
+        {
+            if (   !fQuiet
+                || errno != ENOENT
+                || (   pszFilename[0] != '/'
+                    && pszFilename[0] != '\\'
+                    && (   !isalpha(pszFilename[0])
+                        || pszFilename[1] != ':'
+                        || (    pszFilename[2] != '/'
+                            &&  pszFilename[2] != '\\')))
+               )
+                fprintf(stderr, "kDep: Skipping '%s' - %s!\n", pszFilename, strerror(errno));
+            continue;
+        }
+
+        /*
+         * Insert the corrected dependency.
+         */
+        depAdd(pThis, pszFilename, strlen(pszFilename));
+    }
+
+    /*
+     * Free the old ones.
+     */
+    while (pDepOrg)
+    {
+        pDep = pDepOrg;
+        pDepOrg = pDepOrg->pNext;
+        free(pDep);
+    }
+}
+
+
+/**
+ * Write a filename that contains characters that needs escaping.
+ *
+ * @param   pOutput The output stream.
+ * @param   pszFile The filename.
+ * @param   cchFile The length of the filename.
+ * @param   fDep    Whether this is for a dependency file or a target file.
+ */
+int depNeedsEscaping(const char *pszFile, size_t cchFile, int fDependency)
+{
+    return memchr(pszFile, ' ',  cchFile) != NULL
+        || memchr(pszFile, '\t', cchFile) != NULL
+        || memchr(pszFile, '#',  cchFile) != NULL
+        || memchr(pszFile, '=',  cchFile) != NULL
+        || memchr(pszFile, ';',  cchFile) != NULL
+        || memchr(pszFile, '$',  cchFile) != NULL
+        || memchr(pszFile, fDependency ? '|' : '%',  cchFile) != NULL;
+}
+
+
+/**
+ * Write a filename that contains characters that needs escaping.
+ *
+ * @param   pOutput The output stream.
+ * @param   pszFile The filename.
+ * @param   cchFile The length of the filename.
+ * @param   fDep    Whether this is for a dependency file or a target file.
+ */
+void depEscapedWrite(FILE *pOutput, const char *pszFile, size_t cchFile, int fDepenency)
+{
+    size_t cchWritten = 0;
+    size_t off        = 0;
+    while (off < cchFile)
+    {
+        char const ch = pszFile[off];
+        switch (ch)
+        {
+            default:
+                off++;
+                break;
+
+            /*
+             * Escaped by slash, but any preceeding slashes must be escaped too.
+             * A couple of characters are only escaped on one side of the ':'.
+             */
+            case '%': /* target side only */
+            case '|': /* dependency side only */
+                if (ch != (fDepenency ? '|' : '%'))
+                {
+                    off++;
+                    break;
+                }
+                /* fall thru */
+            case ' ':
+            case '\t':
+            case '#':
+            case '=': /** @todo buggy GNU make handling */
+            case ';': /** @todo buggy GNU make handling */
+                if (cchWritten < off)
+                    fwrite(&pszFile[cchWritten], off - cchWritten, 1, pOutput);
+                if (off == 0 || pszFile[off - 1] != '\\')
+                {
+                    fputc('\\', pOutput);
+                    cchWritten = off; /* We write the escaped character with the next bunch. */
+                }
+                else
+                {
+                    size_t cchSlashes = 1;
+                    while (cchSlashes < off && pszFile[off - cchSlashes - 1] == '\\')
+                        cchSlashes++;
+                    fwrite(&pszFile[off - cchSlashes], cchSlashes, 1, pOutput);
+                    cchWritten = off - 1; /* Write a preceeding slash and the escaped character with the next bunch. */
+                }
+                off += 1;
+                break;
+
+            /*
+             * Escaped by doubling it.
+             * Implemented by including in the pending writeout job as well as in the next one.
+             */
+            case '$':
+                fwrite(&pszFile[cchWritten], off - cchWritten + 1, 1, pOutput);
+                cchWritten = off++; /* write it again the next time */
+                break;
+        }
+    }
+
+    /* Remainder: */
+    if (cchWritten < cchFile)
+        fwrite(&pszFile[cchWritten], cchFile - cchWritten, 1, pOutput);
+}
+
+
+/**
+ * Escapes all trailing trailing slashes in a filename that ends with such.
+ */
+static void depPrintTrailngSlashEscape(FILE *pOutput, const char *pszFilename, size_t cchFilename)
+{
+    size_t cchSlashes = 1;
+    while (cchSlashes < cchFilename && pszFilename[cchFilename - cchSlashes - 1] == '\\')
+        cchSlashes++;
+    fwrite(&pszFilename[cchFilename - cchSlashes], cchSlashes, 1, pOutput);
+}
+
+
+/**
+ * Prints the dependency chain.
+ *
+ * @param   pThis       The 'dep' instance.
+ * @param   pOutput     Output stream.
+ */
+void depPrintChain(PDEPGLOBALS pThis, FILE *pOutput)
+{
+    static char const g_szEntryText[]     = " \\\n\t";
+    static char const g_szTailText[]      = "\n\n";
+    static char const g_szTailSlashText[] = " \\\n\n";
+    PDEP              pDep;
+    for (pDep = pThis->pDeps; pDep; pDep = pDep->pNext)
+    {
+        fwrite(g_szEntryText, sizeof(g_szEntryText) - 1, 1, pOutput);
+        if (!pDep->fNeedsEscaping)
+            fwrite(pDep->szFilename, pDep->cchFilename, 1, pOutput);
+        else
+            depEscapedWrite(pOutput, pDep->szFilename, pDep->cchFilename, 1 /*fDependency*/);
+        if (pDep->fTrailingSlash)
+        {   /* Escape only if more dependencies.  If last, we must add a line continuation or it won't work. */
+            if (pDep->pNext)
+                depPrintTrailngSlashEscape(pOutput, pDep->szFilename, pDep->cchFilename);
+            else
+            {
+                fwrite(g_szTailSlashText, sizeof(g_szTailSlashText), 1, pOutput);
+                return;
+            }
+        }
+    }
+
+    fwrite(g_szTailText, sizeof(g_szTailText) - 1, 1, pOutput);
+}
+
+
+/**
+ * Prints the dependency chain with a preceeding target.
+ *
+ * @param   pThis           The 'dep' instance.
+ * @param   pOutput         Output stream.
+ * @param   pszTarget       The target filename.
+ * @param   fEscapeTarget   Whether to consider escaping the target.
+ */
+void depPrintTargetWithDeps(PDEPGLOBALS pThis, FILE *pOutput, const char *pszTarget, int fEscapeTarget)
+{
+    static char const g_szSeparator[] = ":";
+    size_t const cchTarget = strlen(pszTarget);
+    if (!fEscapeTarget || !depNeedsEscaping(pszTarget, cchTarget, 0 /*fDependency*/))
+        fwrite(pszTarget, cchTarget, 1, pOutput);
+    else
+        depEscapedWrite(pOutput, pszTarget, cchTarget, 0 /*fDependency*/);
+
+    if (cchTarget == 0 || pszTarget[cchTarget - 1] != '\\')
+    { /* likely */ }
+    else
+        depPrintTrailngSlashEscape(pOutput, pszTarget, cchTarget);
+    fwrite(g_szSeparator, sizeof(g_szSeparator) - 1, 1, pOutput);
+
+    depPrintChain(pThis, pOutput);
+}
+
+
+/**
+ * Prints empty dependency stubs for all dependencies.
+ *
+ * @param   pThis       The 'dep' instance.
+ * @param   pOutput     Output stream.
+ */
+void depPrintStubs(PDEPGLOBALS pThis, FILE *pOutput)
+{
+    static char g_szTailText[] = ":\n\n";
+    PDEP pDep;
+    for (pDep = pThis->pDeps; pDep; pDep = pDep->pNext)
+    {
+        if (!pDep->fNeedsEscaping && memchr(pDep->szFilename, '%', pDep->cchFilename) == 0)
+            fwrite(pDep->szFilename, pDep->cchFilename, 1, pOutput);
+        else
+            depEscapedWrite(pOutput, pDep->szFilename, pDep->cchFilename, 0 /*fDependency*/);
+
+        if (pDep->cchFilename == 0 || !pDep->fTrailingSlash)
+        { /* likely */ }
+        else
+            depPrintTrailngSlashEscape(pOutput, pDep->szFilename, pDep->cchFilename);
+        fwrite(g_szTailText, sizeof(g_szTailText) - 1, 1, pOutput);
+    }
+}
+
+
+/* sdbm:
+   This algorithm was created for sdbm (a public-domain reimplementation of
+   ndbm) database library. it was found to do well in scrambling bits,
+   causing better distribution of the keys and fewer splits. it also happens
+   to be a good general hashing function with good distribution. the actual
+   function is hash(i) = hash(i - 1) * 65599 + str[i]; what is included below
+   is the faster version used in gawk. [there is even a faster, duff-device
+   version] the magic constant 65599 was picked out of thin air while
+   experimenting with different constants, and turns out to be a prime.
+   this is one of the algorithms used in berkeley db (see sleepycat) and
+   elsewhere. */
+static unsigned sdbm(const char *str, size_t size)
+{
+    unsigned hash = 0;
+    int c;
+
+    while (size-- > 0 && (c = *(unsigned const char *)str++))
+        hash = c + (hash << 6) + (hash << 16) - hash;
+
+    return hash;
+}
+
+
+/**
+ * Adds a dependency.
+ *
+ * @returns Pointer to the allocated dependency.
+ * @param   pThis       The 'dep' instance.
+ * @param   pszFilename     The filename. Does not need to be terminated.
+ * @param   cchFilename     The length of the filename.
+ */
+PDEP depAdd(PDEPGLOBALS pThis, const char *pszFilename, size_t cchFilename)
+{
+    unsigned    uHash = sdbm(pszFilename, cchFilename);
+    PDEP        pDep;
+    PDEP        pDepPrev;
+
+    /*
+     * Check if we've already got this one.
+     */
+    pDepPrev = NULL;
+    for (pDep = pThis->pDeps; pDep; pDepPrev = pDep, pDep = pDep->pNext)
+        if (    pDep->uHash == uHash
+            &&  pDep->cchFilename == cchFilename
+            &&  !memcmp(pDep->szFilename, pszFilename, cchFilename))
+            return pDep;
+
+    /*
+     * Add it.
+     */
+    pDep = (PDEP)malloc(sizeof(*pDep) + cchFilename);
+    if (!pDep)
+    {
+        fprintf(stderr, "\nOut of memory! (requested %lx bytes)\n\n",
+                (unsigned long)(sizeof(*pDep) + cchFilename));
+        exit(1);
+    }
+
+    pDep->cchFilename = cchFilename;
+    memcpy(pDep->szFilename, pszFilename, cchFilename);
+    pDep->szFilename[cchFilename] = '\0';
+    pDep->fNeedsEscaping = depNeedsEscaping(pszFilename, cchFilename, 1 /*fDependency*/);
+    pDep->fTrailingSlash = cchFilename > 0 && pszFilename[cchFilename - 1] == '\\';
+    pDep->uHash = uHash;
+
+    if (pDepPrev)
+    {
+        pDep->pNext = pDepPrev->pNext;
+        pDepPrev->pNext = pDep;
+    }
+    else
+    {
+        pDep->pNext = pThis->pDeps;
+        pThis->pDeps = pDep;
+    }
+    return pDep;
+}
+
+
+/**
+ * Performs a hexdump.
+ */
+void depHexDump(const KU8 *pb, size_t cb, size_t offBase)
+{
+    const unsigned      cchWidth = 16;
+    size_t              off = 0;
+    while (off < cb)
+    {
+        unsigned i;
+        printf("%s%0*lx %04lx:", off ? "\n" : "", (int)sizeof(pb) * 2,
+               (unsigned long)offBase + (unsigned long)off, (unsigned long)off);
+        for (i = 0; i < cchWidth && off + i < cb ; i++)
+            printf(off + i < cb ? !(i & 7) && i ? "-%02x" : " %02x" : "   ", pb[i]);
+
+        while (i++ < cchWidth)
+                printf("   ");
+        printf(" ");
+
+        for (i = 0; i < cchWidth && off + i < cb; i++)
+        {
+            const KU8 u8 = pb[i];
+            printf("%c", u8 < 127 && u8 >= 32 ? u8 : '.');
+        }
+        off += cchWidth;
+        pb  += cchWidth;
+    }
+    printf("\n");
+}
+
+
+/**
+ * Reads the file specified by the pInput file stream into memory.
+ *
+ * @returns The address of the memory mapping on success. This must be
+ *          freed by calling depFreeFileMemory.
+ *
+ * @param   pInput      The file stream to load or map into memory.
+ * @param   pcbFile     Where to return the mapping (file) size.
+ * @param   ppvOpaque   Opaque data when mapping, otherwise NULL.
+ */
+void *depReadFileIntoMemory(FILE *pInput, size_t *pcbFile, void **ppvOpaque)
+{
+    void       *pvFile;
+    long        cbFile;
+
+    /*
+     * Figure out file size.
+     */
+#if defined(_MSC_VER)
+    cbFile = _filelength(fileno(pInput));
+    if (cbFile < 0)
+#else
+    if (    fseek(pInput, 0, SEEK_END) < 0
+        ||  (cbFile = ftell(pInput)) < 0
+        ||  fseek(pInput, 0, SEEK_SET))
+#endif
+    {
+        fprintf(stderr, "kDep: error: Failed to determin file size.\n");
+        return NULL;
+    }
+    if (pcbFile)
+        *pcbFile = cbFile;
+
+    /*
+     * Try mmap first.
+     */
+#ifdef USE_WIN_MMAP
+    {
+        HANDLE hMapObj = CreateFileMapping((HANDLE)_get_osfhandle(fileno(pInput)),
+                                           NULL, PAGE_READONLY, 0, cbFile, NULL);
+        if (hMapObj != NULL)
+        {
+            pvFile = MapViewOfFile(hMapObj, FILE_MAP_READ, 0, 0, cbFile);
+            if (pvFile)
+            {
+                *ppvOpaque = hMapObj;
+                return pvFile;
+            }
+            fprintf(stderr, "kDep: warning: MapViewOfFile failed, %d.\n", GetLastError());
+            CloseHandle(hMapObj);
+        }
+        else
+            fprintf(stderr, "kDep: warning: CreateFileMapping failed, %d.\n", GetLastError());
+    }
+
+#endif
+
+    /*
+     * Allocate memory and read the file.
+     */
+    pvFile = malloc(cbFile + 1);
+    if (pvFile)
+    {
+        if (fread(pvFile, cbFile, 1, pInput))
+        {
+            ((KU8 *)pvFile)[cbFile] = '\0';
+            *ppvOpaque = NULL;
+            return pvFile;
+        }
+        fprintf(stderr, "kDep: error: Failed to read %ld bytes.\n", cbFile);
+        free(pvFile);
+    }
+    else
+        fprintf(stderr, "kDep: error: Failed to allocate %ld bytes (file mapping).\n", cbFile);
+    return NULL;
+}
+
+
+/**
+ * Free resources allocated by depReadFileIntoMemory.
+ *
+ * @param   pvFile      The address of the memory mapping.
+ * @param   pvOpaque    The opaque value returned together with the mapping.
+ */
+void depFreeFileMemory(void *pvFile, void *pvOpaque)
+{
+#if defined(USE_WIN_MMAP)
+    if (pvOpaque)
+    {
+        UnmapViewOfFile(pvFile);
+        CloseHandle(pvOpaque);
+        return;
+    }
+#endif
+    free(pvFile);
+}
+
diff --git a/src/lib/kDep.h b/src/lib/kDep.h
new file mode 100644
index 0000000..62917a6
--- /dev/null
+++ b/src/lib/kDep.h
@@ -0,0 +1,77 @@
+/* $Id: kDep.h 3315 2020-03-31 01:12:19Z bird $ */
+/** @file
+ * kDep - Common Dependency Managemnt Code.
+ */
+
+/*
+ * Copyright (c) 2004-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+#ifndef ___kDep_h
+#define ___kDep_h
+
+/** A dependency. */
+typedef struct DEP
+{
+    /** Next dependency in the list. */
+    struct DEP *pNext;
+    /** The filename hash. */
+    unsigned    uHash;
+    /** Set if needs escaping. */
+    char        fNeedsEscaping;
+    /** Set if filename ends with a slash and may require special processing. */
+    char        fTrailingSlash;
+    /** The length of the filename. */
+    size_t      cchFilename;
+    /** The filename. */
+    char        szFilename[4];
+} DEP, *PDEP;
+
+typedef struct DEPGLOBALS
+{
+    /** List of dependencies. */
+    PDEP pDeps;
+
+} DEPGLOBALS;
+typedef DEPGLOBALS *PDEPGLOBALS;
+
+extern void depInit(PDEPGLOBALS pThis);
+extern void depCleanup(PDEPGLOBALS pThis);
+extern PDEP depAdd(PDEPGLOBALS pThis, const char *pszFilename, size_t cchFilename);
+extern void depOptimize(PDEPGLOBALS pThis, int fFixCase, int fQuiet, const char *pszIgnoredExt);
+extern int  depNeedsEscaping(const char *pszFile, size_t cchFile, int fDependency);
+extern void depEscapedWrite(FILE *pOutput, const char *pszFile, size_t cchFile, int fDepenency);
+extern void depPrintChain(PDEPGLOBALS pThis, FILE *pOutput);
+extern void depPrintTargetWithDeps(PDEPGLOBALS pThis, FILE *pOutput, const char *pszTarget, int fEscapeTarget);
+extern void depPrintStubs(PDEPGLOBALS pThis, FILE *pOutput);
+
+extern void *depReadFileIntoMemory(FILE *pInput, size_t *pcbFile, void **ppvOpaque);
+extern void depFreeFileMemory(void *pvFile, void *pvOpaque);
+#ifdef ___k_kTypes_h___
+extern void depHexDump(const KU8 *pb, size_t cb, size_t offBase);
+#endif
+
+#endif
+
diff --git a/src/lib/kStuff/Config.kmk b/src/lib/kStuff/Config.kmk
new file mode 100644
index 0000000..df3bf4a
--- /dev/null
+++ b/src/lib/kStuff/Config.kmk
@@ -0,0 +1,138 @@
+# $Id: Config.kmk 29 2009-07-01 20:30:29Z bird $
+## @file
+# kBuild configuration for kStuff
+#
+
+#
+# Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+#
+# This is where we install during the build.
+#
+PATH_INS := $(PATH_OUT)/kStuff
+
+
+#
+# Templates for the kStuff.
+#
+TEMPLATE_kStuff = kStuff Template
+TEMPLATE_kStuff_TOOL             = GXX3
+TEMPLATE_kStuff_TOOL.darwin      = GXX4MACHO
+TEMPLATE_kStuff_TOOL.os2         = GXX3OMF
+TEMPLATE_kStuff_TOOL.solaris     = GXX3PLAIN
+TEMPLATE_kStuff_TOOL.win.x86     = VCC70
+TEMPLATE_kStuff_TOOL.win.amd64   = VCC80AMD64
+
+TEMPLATE_kStuff_SDKS.win.x86     = WINPSDK W2K3DDKX86
+TEMPLATE_kStuff_SDKS.win.amd64   = WINPSDK W2K3DDKAMD64
+
+TEMPLATE_kStuff_DEFS.freebsd     = KS_OS_FREEBSD
+TEMPLATE_kStuff_DEFS.darwin      = KS_OS_DARWIN
+TEMPLATE_kStuff_DEFS.linux       = KS_OS_LINUX
+TEMPLATE_kStuff_DEFS.netbsd      = KS_OS_NETBSD
+TEMPLATE_kStuff_DEFS.openbsd     = KS_OS_OPENBSD
+TEMPLATE_kStuff_DEFS.os2         = KS_OS_OS2
+TEMPLATE_kStuff_DEFS.solaris     = KS_OS_SOLARIS
+TEMPLATE_kStuff_DEFS.win         = KS_OS_WINDOWS _CRT_SECURE_NO_DEPRECATE _CRT_NONSTDC_NO_WARNINGS
+
+TEMPLATE_kStuff_DEFS.x86         = KS_BITS=32
+TEMPLATE_kStuff_DEFS.amd64       = KS_BITS=64
+
+TEMPLATE_kStuff_INCS             = $(PATH_ROOT)/include
+
+TEMPLATE_kStuff_ASTOOL           = YASM
+TEMPLATE_kStuff_ASTOOL.os2       = NASM
+TEMPLATE_kStuff_ASFLAGS.freebsd  = -f elf
+TEMPLATE_kStuff_ASFLAGS.linux    = -f elf
+TEMPLATE_kStuff_ASFLAGS.os2      = -f omf
+TEMPLATE_kStuff_ASFLAGS.win.x86  = -f win32 -g cv8
+TEMPLATE_kStuff_ASFLAGS.win.amd64= -f win64 -g cv8
+
+TEMPLATE_kStuff_CFLAGS.darwin    = -g -fno-common
+TEMPLATE_kStuff_CFLAGS.freebsd   = -g
+TEMPLATE_kStuff_CFLAGS.linux     = -g
+TEMPLATE_kStuff_CFLAGS.os2       = -g
+TEMPLATE_kStuff_CFLAGS.win       = -Zi -Zl -W3 -GF -GR-
+TEMPLATE_kStuff_CFLAGS.win.x86   = -MD
+TEMPLATE_kStuff_CFLAGS.win.amd64 = -MT
+ifneq ($(BUILD_TYPE),debug)
+TEMPLATE_kStuff_CFLAGS.freebsd  += -O3
+TEMPLATE_kStuff_CFLAGS.linux    += -O3
+TEMPLATE_kStuff_CFLAGS.os2      += -O3
+TEMPLATE_kStuff_CFLAGS.win      += -O2b2
+else
+TEMPLATE_kStuff_CFLAGS.win      += -Od
+endif
+
+TEMPLATE_kStuff_CXXFLAGS.darwin  = -g -fno-exceptions -fno-common
+TEMPLATE_kStuff_CXXFLAGS.freebsd = -g -fno-exceptions
+TEMPLATE_kStuff_CXXFLAGS.linux   = -g -fno-exceptions
+TEMPLATE_kStuff_CXXFLAGS.os2     = -g -fno-exceptions
+TEMPLATE_kStuff_CXXFLAGS.win     = -Zi -Zl -W3 -GF -GR-
+TEMPLATE_kStuff_CXXFLAGS.win.x86 = -MD
+TEMPLATE_kStuff_CXXFLAGS.win.amd64 = -MT
+ifneq ($(BUILD_TYPE),debug)
+TEMPLATE_kStuff_CXXFLAGS.freebsd+= -O3
+TEMPLATE_kStuff_CXXFLAGS.linux  += -O3
+TEMPLATE_kStuff_CXXFLAGS.os2    += -O3
+TEMPLATE_kStuff_CXXFLAGS.win    += -O2b2
+else
+TEMPLATE_kStuff_CXXFLAGS.win    += -Od
+endif
+
+TEMPLATE_kStuff_LDFLAGS.freebsd  = -g
+TEMPLATE_kStuff_LDFLAGS.linux    = -g
+TEMPLATE_kStuff_LDFLAGS.os2      = -g
+TEMPLATE_kStuff_LDFLAGS.win      = /DEBUG /NODEFAULTLIB
+
+TEMPLATE_kStuff_LIBS.freebsd     =
+TEMPLATE_kStuff_LIBS.linux       =
+TEMPLATE_kStuff_LIBS.os2         =
+TEMPLATE_kStuff_LIBS.win         = \
+	$(PATH_SDK_WINPSDK_LIB)/psapi.Lib
+TEMPLATE_kStuff_LIBS.win.x86     = \
+	$(PATH_TOOL_VCC70_LIB)/msvcrt.lib \
+	$(PATH_TOOL_VCC70_LIB)/msvcprt.lib \
+	$(PATH_TOOL_VCC70_LIB)/oldnames.lib \
+	$(PATH_SDK_W2K3DDKX86_LIB)/ntdll.lib
+TEMPLATE_kStuff_LIBS.win.amd64   = \
+	$(PATH_TOOL_VCC80AMD64_LIB)/libcmt.lib \
+	$(PATH_TOOL_VCC80AMD64_LIB)/oldnames.lib \
+	$(PATH_SDK_W2K3DDKAMD64_LIB)/ntdll.lib
+
+TEMPLATE_kStuffEXE = kStuff Executable Template
+TEMPLATE_kStuffEXE_EXTENDS = kStuff
+TEMPLATE_kStuffEXE_DEFS = $(TEMPLATE_kStuff) KS_EXE_TARGET
+
+TEMPLATE_kStuffLIB = kStuff Library Template
+TEMPLATE_kStuffLIB_EXTENDS = kStuff
+TEMPLATE_kStuffLIB_DEFS = $(TEMPLATE_kStuff) KS_LIB_TARGET
+
+TEMPLATE_kStuffDLL = kStuff DLL Template
+TEMPLATE_kStuffDLL_EXTENDS = kStuff
+TEMPLATE_kStuffDLL_DEFS = $(TEMPLATE_kStuff) KS_DLL_TARGET
+TEMPLATE_kStuffDLL_LDFLAGS.os2 = $(TEMPLATE_kStuff_LDFLAGS.os2) -Zdll
+
+
diff --git a/src/lib/kStuff/Copyright b/src/lib/kStuff/Copyright
new file mode 100644
index 0000000..ff0902b
--- /dev/null
+++ b/src/lib/kStuff/Copyright
@@ -0,0 +1,25 @@
+All kStuff files are:
+
+ Copyright (c) 2006-2008 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
diff --git a/src/lib/kStuff/Makefile.kmk b/src/lib/kStuff/Makefile.kmk
new file mode 100644
index 0000000..e06f67a
--- /dev/null
+++ b/src/lib/kStuff/Makefile.kmk
@@ -0,0 +1,55 @@
+# $Id: Makefile.kmk 29 2009-07-01 20:30:29Z bird $
+## @file
+# kStuff - Top-level makefile.
+#
+
+#
+# Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+DEPTH = .
+include $(PATH_KBUILD)/subheader.kmk
+
+include $(PATH_SUB_CURRENT)/kCpu/Makefile.kmk
+include $(PATH_SUB_CURRENT)/kDbg/Makefile.kmk
+include $(PATH_SUB_CURRENT)/kErr/Makefile.kmk
+include $(PATH_SUB_CURRENT)/kLdr/Makefile.kmk
+include $(PATH_SUB_CURRENT)/kRdr/Makefile.kmk
+
+include $(PATH_SUB_CURRENT)/kHlp/Makefile.kmk
+ifn1of ($(KBUILD_TARGET), darwin)
+ include $(PATH_SUB_CURRENT)/kProfiler2/Makefile.kmk
+endif
+
+LIBRARIES += kStuffStatic
+kStuffStatic_TEMPLATE = kStuffLIB
+kStuffStatic_SOURCES = \
+	$(TARGET_kCpuStatic) \
+	$(TARGET_kDbgStatic) \
+	$(TARGET_kErrStatic) \
+	$(TARGET_kLdrStatic) \
+	$(TARGET_kRdrStatic)
+
+include $(PATH_KBUILD)/subfooter.kmk
+
diff --git a/src/lib/kStuff/include/k/kAvlTmpl/kAvlBase.h b/src/lib/kStuff/include/k/kAvlTmpl/kAvlBase.h
new file mode 100644
index 0000000..90efdee
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvlTmpl/kAvlBase.h
@@ -0,0 +1,626 @@
+/* $Id: kAvlBase.h 36 2009-11-09 22:49:02Z bird $ */
+/** @file
+ * kAvlTmpl - Templated AVL Trees, The Mandatory Base Code.
+ */
+
+/*
+ * Copyright (c) 2001-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/** @page pg_kAvlTmpl   Template Configuration.
+ *
+ *  This is a templated implementation of AVL trees in C. The template
+ *  parameters relates to the kind of key used and how duplicates are
+ *  treated.
+ *
+ *  \#define KAVL_EQUAL_ALLOWED
+ *  Define this to tell us that equal keys are allowed.
+ *  Then Equal keys will be put in a list pointed to by KAVLNODE::pList.
+ *  This is by default not defined.
+ *
+ *  \#define KAVL_CHECK_FOR_EQUAL_INSERT
+ *  Define this to enable insert check for equal nodes.
+ *  This is by default not defined.
+ *
+ *  \#define KAVL_MAX_STACK
+ *  Use this to specify the max number of stack entries the stack will use when
+ *  inserting and removing nodes from the tree. The size should be something like
+ *      log2(<max nodes>) + 3
+ *  Must be defined.
+ *
+ *  \#define KAVL_RANGE
+ *  Define this to enable key ranges.
+ *
+ *  \#define KAVL_OFFSET
+ *  Define this to link the tree together using self relative offset
+ *  instead of memory pointers, thus making the entire tree relocatable
+ *  provided all the nodes - including the root node variable - are moved
+ *  the exact same distance.
+ *
+ *  \#define KAVL_LOOKTHRU
+ *  Define this to employ a lookthru cache (direct) to speed up lookup for
+ *  some usage patterns. The value should be the number of members of the
+ *   array.
+ *
+ *  \#define KAVL_LOOKTHRU_HASH(Key)
+ *  Define this to specify a more efficient translation of the key into
+ *  a lookthru array index. The default is key % size.
+ *  For some key types this is required as the default will not compile.
+ *
+ *  \#define KAVL_LOCKED
+ *  Define this if you wish for the tree to be locked via the
+ *  KAVL_WRITE_LOCK,  KAVL_WRITE_UNLOCK, KAVL_READ_LOCK and
+ *  KAVL_READ_UNLOCK macros. If not defined the tree will not be subject
+ *  do any kind of locking and the problem of concurrency is left the user.
+ *
+ *  \#define KAVL_WRITE_LOCK(pRoot)
+ *  Lock the tree for writing.
+ *
+ *  \#define KAVL_WRITE_UNLOCK(pRoot)
+ *  Counteracts KAVL_WRITE_LOCK.
+ *
+ *  \#define KAVL_READ_LOCK(pRoot)
+ *  Lock the tree for reading.
+ *
+ *  \#define KAVL_READ_UNLOCK(pRoot)
+ *  Counteracts KAVL_READ_LOCK.
+ *
+ *  \#define KAVLKEY
+ *  Define this to the name of the AVL key type.
+ *
+ *  \#define KAVL_STD_KEY_COMP
+ *  Define this to use the standard key compare macros. If not set all the
+ *  compare operations for KAVLKEY have to be defined: KAVL_G, KAVL_E, KAVL_NE,
+ *  KAVL_R_IS_IDENTICAL, KAVL_R_IS_INTERSECTING and KAVL_R_IS_IN_RANGE. The
+ *  latter three are only required when KAVL_RANGE is defined.
+ *
+ *  \#define KAVLNODE
+ *  Define this to the name (typedef) of the AVL node structure. This
+ *  structure must have a mpLeft, mpRight, mKey and mHeight member.
+ *  If KAVL_RANGE is defined a mKeyLast is also required.
+ *  If KAVL_EQUAL_ALLOWED is defined a mpList member is required.
+ *  It's possible to use other member names by redefining the names.
+ *
+ *  \#define KAVLTREEPTR
+ *  Define this to the name (typedef) of the tree pointer type. This is
+ *  required when KAVL_OFFSET is defined. When not defined it defaults
+ *  to KAVLNODE *.
+ *
+ *  \#define KAVLROOT
+ *  Define this to the name (typedef) of the AVL root structure. This
+ *  is optional. However, if specified it must at least have a mpRoot
+ *  member of KAVLTREEPTR type. If KAVL_LOOKTHRU is non-zero a
+ *  maLookthru[KAVL_LOOKTHRU] member of the KAVLTREEPTR type is also
+ *  required.
+ *
+ *  \#define KAVL_FN
+ *  Use this to alter the names of the AVL functions.
+ *  Must be defined.
+ *
+ *  \#define KAVL_TYPE(prefix, name)
+ *  Use this to make external type names and unique. The prefix may be empty.
+ *  Must be defined.
+ *
+ *  \#define KAVL_INT(name)
+ *  Use this to make internal type names and unique. The prefix may be empty.
+ *  Must be defined.
+ *
+ *  \#define KAVL_DECL(rettype)
+ *  Function declaration macro that should be set according to the scope
+ *  the instantiated template should have. For instance an inlined scope
+ *  (private or public) should K_DECL_INLINE(rettype) here.
+ *
+ *  This version of the kAVL tree offers the option of inlining the entire
+ *  implementation. This depends on the compiler doing a decent job in both
+ *  making use of the inlined code and to eliminate const variables.
+ */
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+#include <k/kHlpAssert.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+#define KAVL_HEIGHTOF(pNode) ((KU8)((pNode) != NULL ? (pNode)->mHeight : 0))
+
+/** @def KAVL_GET_POINTER
+ * Reads a 'pointer' value.
+ *
+ * @returns The native pointer.
+ * @param   pp      Pointer to the pointer to read.
+ * @internal
+ */
+
+/** @def KAVL_GET_POINTER_NULL
+ * Reads a 'pointer' value which can be KAVL_NULL.
+ *
+ * @returns The native pointer.
+ * @returns NULL pointer if KAVL_NULL.
+ * @param   pp      Pointer to the pointer to read.
+ * @internal
+ */
+
+/** @def KAVL_SET_POINTER
+ * Writes a 'pointer' value.
+ * For offset-based schemes offset relative to pp is calculated and assigned to *pp.
+ *
+ * @returns stored pointer.
+ * @param   pp      Pointer to where to store the pointer.
+ * @param   p       Native pointer to assign to *pp.
+ * @internal
+ */
+
+/** @def KAVL_SET_POINTER_NULL
+ * Writes a 'pointer' value which can be KAVL_NULL.
+ *
+ * For offset-based schemes offset relative to pp is calculated and assigned to *pp,
+ * if p is not KAVL_NULL of course.
+ *
+ * @returns stored pointer.
+ * @param   pp      Pointer to where to store the pointer.
+ * @param   pp2     Pointer to where to pointer to assign to pp. This can be KAVL_NULL
+ * @internal
+ */
+
+#ifndef KAVLTREEPTR
+# define KAVLTREEPTR                        KAVLNODE *
+#endif
+
+#ifndef KAVLROOT
+# define KAVLROOT                           KAVL_TYPE(,ROOT)
+# define KAVL_NEED_KAVLROOT
+#endif
+
+#ifdef KAVL_LOOKTHRU
+# ifndef KAVL_LOOKTHRU_HASH
+#  define KAVL_LOOKTHRU_HASH(Key)           ( (Key) % (KAVL_LOOKTHRU) )
+# endif
+#elif defined(KAVL_LOOKTHRU_HASH)
+# error "KAVL_LOOKTHRU_HASH without KAVL_LOOKTHRU!"
+#endif
+
+#ifdef KAVL_LOOKTHRU
+# define KAVL_LOOKTHRU_INVALIDATE_NODE(pRoot, pNode, Key) \
+    do { \
+        KAVLTREEPTR **ppEntry = &pRoot->maLookthru[KAVL_LOOKTHRU_HASH(Key)]; \
+        if ((pNode) == KAVL_GET_POINTER_NULL(ppEntry)) \
+            *ppEntry = KAVL_NULL; \
+    } while (0)
+#else
+# define KAVL_LOOKTHRU_INVALIDATE_NODE(pRoot, pNode, Key) do { } while (0)
+#endif
+
+#ifndef KAVL_LOCKED
+# define KAVL_WRITE_LOCK(pRoot)             do { } while (0)
+# define KAVL_WRITE_UNLOCK(pRoot)           do { } while (0)
+# define KAVL_READ_LOCK(pRoot)              do { } while (0)
+# define KAVL_READ_UNLOCK(pRoot)            do { } while (0)
+#endif
+
+#ifdef KAVL_OFFSET
+# define KAVL_GET_POINTER(pp)               ( (KAVLNODE *)((KIPTR)(pp) + *(pp)) )
+# define KAVL_GET_POINTER_NULL(pp)          ( *(pp) != KAVL_NULL ? KAVL_GET_POINTER(pp) : NULL )
+# define KAVL_SET_POINTER(pp, p)            ( (*(pp)) = ((KIPTR)(p) - (KIPTR)(pp)) )
+# define KAVL_SET_POINTER_NULL(pp, pp2)     ( (*(pp)) = *(pp2) != KAVL_NULL ? (KIPTR)KAVL_GET_POINTER(pp2) - (KIPTR)(pp) : KAVL_NULL )
+#else
+# define KAVL_GET_POINTER(pp)               ( *(pp) )
+# define KAVL_GET_POINTER_NULL(pp)          ( *(pp) )
+# define KAVL_SET_POINTER(pp, p)            ( (*(pp)) = (p) )
+# define KAVL_SET_POINTER_NULL(pp, pp2)     ( (*(pp)) = *(pp2) )
+#endif
+
+
+/** @def KAVL_NULL
+ * The NULL 'pointer' equivalent.
+ */
+#ifdef KAVL_OFFSET
+# define KAVL_NULL     0
+#else
+# define KAVL_NULL     NULL
+#endif
+
+#ifdef KAVL_STD_KEY_COMP
+# define KAVL_G(key1, key2)                 ( (key1) >  (key2) )
+# define KAVL_E(key1, key2)                 ( (key1) == (key2) )
+# define KAVL_NE(key1, key2)                ( (key1) != (key2) )
+# ifdef KAVL_RANGE
+#  define KAVL_R_IS_IDENTICAL(key1B, key2B, key1E, key2E)       ( (key1B) == (key2B) && (key1E) == (key2E) )
+#  define KAVL_R_IS_INTERSECTING(key1B, key2B, key1E, key2E)    ( (key1B) <= (key2E) && (key1E) >= (key2B) )
+#  define KAVL_R_IS_IN_RANGE(key1B, key1E, key2)                KAVL_R_IS_INTERSECTING(key1B, key2, key1E, key2)
+# endif
+#endif
+
+#ifndef KAVL_RANGE
+# define KAVL_R_IS_INTERSECTING(key1B, key2B, key1E, key2E)     KAVL_E(key1B, key2B)
+# define KAVL_R_IS_IDENTICAL(key1B, key2B, key1E, key2E)        KAVL_E(key1B, key2B)
+#endif
+
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Stack used to avoid recursive calls during insert and removal.
+ */
+typedef struct
+{
+    unsigned        cEntries;
+    KAVLTREEPTR    *aEntries[KAVL_MAX_STACK];
+} KAVL_INT(STACK);
+
+/**
+ * The callback used by the Destroy and DoWithAll functions.
+ */
+typedef int (* KAVL_TYPE(PFN,CALLBACK))(KAVLNODE *, void *);
+
+#ifdef KAVL_NEED_KAVLROOT
+/**
+ * The AVL root structure.
+ */
+typedef struct
+{
+    KAVLTREEPTR     mpRoot;
+# ifdef KAVL_LOOKTHRU
+    KAVLTREEPTR     maLookthru[KAVL_LOOKTHRU];
+# endif
+} KAVLROOT;
+#endif
+
+
+/**
+ * Rewinds a stack of node pointer pointers, rebalancing the tree.
+ *
+ * @param     pStack  Pointer to stack to rewind.
+ * @sketch    LOOP thru all stack entries
+ *            BEGIN
+ *                Get pointer to pointer to node (and pointer to node) from the stack.
+ *                IF 2 higher left subtree than in right subtree THEN
+ *                BEGIN
+ *                    IF higher (or equal) left-sub-subtree than right-sub-subtree THEN
+ *                                *                       n+2|n+3
+ *                              /   \                     /     \
+ *                            n+2    n       ==>         n+1   n+1|n+2
+ *                           /   \                             /     \
+ *                         n+1 n|n+1                          n|n+1  n
+ *
+ *                         Or with keys:
+ *
+ *                               4                           2
+ *                             /   \                       /   \
+ *                            2     5        ==>          1     4
+ *                           / \                               / \
+ *                          1   3                             3   5
+ *
+ *                    ELSE
+ *                                *                         n+2
+ *                              /   \                      /   \
+ *                            n+2    n                   n+1   n+1
+ *                           /   \           ==>        /  \   /  \
+ *                          n    n+1                    n  L   R   n
+ *                               / \
+ *                              L   R
+ *
+ *                         Or with keys:
+ *                               6                           4
+ *                             /   \                       /   \
+ *                            2     7        ==>          2     6
+ *                          /   \                       /  \  /  \
+ *                          1    4                      1  3  5  7
+ *                              / \
+ *                             3   5
+ *                END
+ *                ELSE IF 2 higher in right subtree than in left subtree THEN
+ *                BEGIN
+ *                    Same as above but left <==> right. (invert the picture)
+ *                ELSE
+ *                    IF correct height THEN break
+ *                    ELSE correct height.
+ *            END
+ */
+K_DECL_INLINE(void) KAVL_FN(Rebalance)(KAVL_INT(STACK) *pStack)
+{
+    while (pStack->cEntries > 0)
+    {
+        KAVLTREEPTR     *ppNode = pStack->aEntries[--pStack->cEntries];
+        KAVLNODE        *pNode = KAVL_GET_POINTER(ppNode);
+        KAVLNODE        *pLeftNode = KAVL_GET_POINTER_NULL(&pNode->mpLeft);
+        KU8              uLeftHeight = KAVL_HEIGHTOF(pLeftNode);
+        KAVLNODE        *pRightNode = KAVL_GET_POINTER_NULL(&pNode->mpRight);
+        KU8              uRightHeight = KAVL_HEIGHTOF(pRightNode);
+
+        if (uRightHeight + 1 < uLeftHeight)
+        {
+            KAVLNODE    *pLeftLeftNode = KAVL_GET_POINTER_NULL(&pLeftNode->mpLeft);
+            KAVLNODE    *pLeftRightNode = KAVL_GET_POINTER_NULL(&pLeftNode->mpRight);
+            KU8          uLeftRightHeight = KAVL_HEIGHTOF(pLeftRightNode);
+
+            if (KAVL_HEIGHTOF(pLeftLeftNode) >= uLeftRightHeight)
+            {
+                KAVL_SET_POINTER_NULL(&pNode->mpLeft, &pLeftNode->mpRight);
+                KAVL_SET_POINTER(&pLeftNode->mpRight, pNode);
+                pLeftNode->mHeight = (KU8)(1 + (pNode->mHeight = (KU8)(1 + uLeftRightHeight)));
+                KAVL_SET_POINTER(ppNode, pLeftNode);
+            }
+            else
+            {
+                KAVL_SET_POINTER_NULL(&pLeftNode->mpRight, &pLeftRightNode->mpLeft);
+                KAVL_SET_POINTER_NULL(&pNode->mpLeft, &pLeftRightNode->mpRight);
+                KAVL_SET_POINTER(&pLeftRightNode->mpLeft, pLeftNode);
+                KAVL_SET_POINTER(&pLeftRightNode->mpRight, pNode);
+                pLeftNode->mHeight = pNode->mHeight = uLeftRightHeight;
+                pLeftRightNode->mHeight = uLeftHeight;
+                KAVL_SET_POINTER(ppNode, pLeftRightNode);
+            }
+        }
+        else if (uLeftHeight + 1 < uRightHeight)
+        {
+            KAVLNODE    *pRightLeftNode = KAVL_GET_POINTER_NULL(&pRightNode->mpLeft);
+            KU8          uRightLeftHeight = KAVL_HEIGHTOF(pRightLeftNode);
+            KAVLNODE    *pRightRightNode = KAVL_GET_POINTER_NULL(&pRightNode->mpRight);
+
+            if (KAVL_HEIGHTOF(pRightRightNode) >= uRightLeftHeight)
+            {
+                KAVL_SET_POINTER_NULL(&pNode->mpRight, &pRightNode->mpLeft);
+                KAVL_SET_POINTER(&pRightNode->mpLeft, pNode);
+                pRightNode->mHeight = (KU8)(1 + (pNode->mHeight = (KU8)(1 + uRightLeftHeight)));
+                KAVL_SET_POINTER(ppNode, pRightNode);
+            }
+            else
+            {
+                KAVL_SET_POINTER_NULL(&pRightNode->mpLeft, &pRightLeftNode->mpRight);
+                KAVL_SET_POINTER_NULL(&pNode->mpRight, &pRightLeftNode->mpLeft);
+                KAVL_SET_POINTER(&pRightLeftNode->mpRight, pRightNode);
+                KAVL_SET_POINTER(&pRightLeftNode->mpLeft, pNode);
+                pRightNode->mHeight = pNode->mHeight = uRightLeftHeight;
+                pRightLeftNode->mHeight = uRightHeight;
+                KAVL_SET_POINTER(ppNode, pRightLeftNode);
+            }
+        }
+        else
+        {
+            KU8 uHeight = (KU8)(K_MAX(uLeftHeight, uRightHeight) + 1);
+            if (uHeight == pNode->mHeight)
+                break;
+            pNode->mHeight = uHeight;
+        }
+    }
+
+}
+
+
+/**
+ * Initializes the root of the AVL-tree.
+ *
+ * @param     pTree     Pointer to the root structure.
+ */
+KAVL_DECL(void) KAVL_FN(Init)(KAVLROOT *pRoot)
+{
+#ifdef KAVL_LOOKTHRU
+    unsigned i;
+#endif
+
+    pRoot->mpRoot = KAVL_NULL;
+#ifdef KAVL_LOOKTHRU
+    for (i = 0; i < (KAVL_LOOKTHRU); i++)
+        pRoot->maLookthru[i] = KAVL_NULL;
+#endif
+}
+
+
+/**
+ * Inserts a node into the AVL-tree.
+ * @returns   K_TRUE if inserted.
+ *            K_FALSE if node exists in tree.
+ * @param     pRoot     Pointer to the AVL-tree root structure.
+ * @param     pNode     Pointer to the node which is to be added.
+ * @sketch    Find the location of the node (using binary tree algorithm.):
+ *            LOOP until NULL leaf pointer
+ *            BEGIN
+ *                Add node pointer pointer to the AVL-stack.
+ *                IF new-node-key < node key THEN
+ *                    left
+ *                ELSE
+ *                    right
+ *            END
+ *            Fill in leaf node and insert it.
+ *            Rebalance the tree.
+ */
+KAVL_DECL(KBOOL) KAVL_FN(Insert)(KAVLROOT *pRoot, KAVLNODE *pNode)
+{
+    KAVL_INT(STACK)     AVLStack;
+    KAVLTREEPTR        *ppCurNode = &pRoot->mpRoot;
+    register KAVLKEY    Key = pNode->mKey;
+#ifdef KAVL_RANGE
+    register KAVLKEY    KeyLast = pNode->mKeyLast;
+#endif
+
+#ifdef KAVL_RANGE
+    if (Key > KeyLast)
+        return K_FALSE;
+#endif
+
+    KAVL_WRITE_LOCK(pRoot);
+
+    AVLStack.cEntries = 0;
+    while (*ppCurNode != KAVL_NULL)
+    {
+        register KAVLNODE *pCurNode = KAVL_GET_POINTER(ppCurNode);
+
+        kHlpAssert(AVLStack.cEntries < KAVL_MAX_STACK);
+        AVLStack.aEntries[AVLStack.cEntries++] = ppCurNode;
+#ifdef KAVL_EQUAL_ALLOWED
+        if (KAVL_R_IS_IDENTICAL(pCurNode->mKey, Key, pCurNode->mKeyLast, KeyLast))
+        {
+            /*
+             * If equal then we'll use a list of equal nodes.
+             */
+            pNode->mpLeft = pNode->mpRight = KAVL_NULL;
+            pNode->mHeight = 0;
+            KAVL_SET_POINTER_NULL(&pNode->mpList, &pCurNode->mpList);
+            KAVL_SET_POINTER(&pCurNode->mpList, pNode);
+            KAVL_WRITE_UNLOCK(pRoot);
+            return K_TRUE;
+        }
+#endif
+#ifdef KAVL_CHECK_FOR_EQUAL_INSERT
+        if (KAVL_R_IS_INTERSECTING(pCurNode->mKey, Key, pCurNode->mKeyLast, KeyLast))
+        {
+            KAVL_WRITE_UNLOCK(pRoot);
+            return K_FALSE;
+        }
+#endif
+        if (KAVL_G(pCurNode->mKey, Key))
+            ppCurNode = &pCurNode->mpLeft;
+        else
+            ppCurNode = &pCurNode->mpRight;
+    }
+
+    pNode->mpLeft = pNode->mpRight = KAVL_NULL;
+#ifdef KAVL_EQUAL_ALLOWED
+    pNode->mpList = KAVL_NULL;
+#endif
+    pNode->mHeight = 1;
+    KAVL_SET_POINTER(ppCurNode, pNode);
+
+    KAVL_FN(Rebalance)(&AVLStack);
+
+    KAVL_WRITE_UNLOCK(pRoot);
+    return K_TRUE;
+}
+
+
+/**
+ * Removes a node from the AVL-tree.
+ * @returns   Pointer to the node.
+ * @param     pRoot     Pointer to the AVL-tree root structure.
+ * @param     Key       Key value of the node which is to be removed.
+ * @sketch    Find the node which is to be removed:
+ *            LOOP until not found
+ *            BEGIN
+ *                Add node pointer pointer to the AVL-stack.
+ *                IF the keys matches THEN break!
+ *                IF remove key < node key THEN
+ *                    left
+ *                ELSE
+ *                    right
+ *            END
+ *            IF found THEN
+ *            BEGIN
+ *                IF left node not empty THEN
+ *                BEGIN
+ *                    Find the right most node in the left tree while adding the pointer to the pointer to it's parent to the stack:
+ *                    Start at left node.
+ *                    LOOP until right node is empty
+ *                    BEGIN
+ *                        Add to stack.
+ *                        go right.
+ *                    END
+ *                    Link out the found node.
+ *                    Replace the node which is to be removed with the found node.
+ *                    Correct the stack entry for the pointer to the left tree.
+ *                END
+ *                ELSE
+ *                BEGIN
+ *                    Move up right node.
+ *                    Remove last stack entry.
+ *                END
+ *                Balance tree using stack.
+ *            END
+ *            return pointer to the removed node (if found).
+ */
+KAVL_DECL(KAVLNODE *) KAVL_FN(Remove)(KAVLROOT *pRoot, KAVLKEY Key)
+{
+    KAVL_INT(STACK)     AVLStack;
+    KAVLTREEPTR        *ppDeleteNode = &pRoot->mpRoot;
+    register KAVLNODE  *pDeleteNode;
+
+    KAVL_WRITE_LOCK(pRoot);
+
+    AVLStack.cEntries = 0;
+    for (;;)
+    {
+        if (*ppDeleteNode == KAVL_NULL)
+        {
+            KAVL_WRITE_UNLOCK(pRoot);
+            return NULL;
+        }
+        pDeleteNode = KAVL_GET_POINTER(ppDeleteNode);
+
+        kHlpAssert(AVLStack.cEntries < KAVL_MAX_STACK);
+        AVLStack.aEntries[AVLStack.cEntries++] = ppDeleteNode;
+        if (KAVL_E(pDeleteNode->mKey, Key))
+            break;
+
+        if (KAVL_G(pDeleteNode->mKey, Key))
+            ppDeleteNode = &pDeleteNode->mpLeft;
+        else
+            ppDeleteNode = &pDeleteNode->mpRight;
+    }
+
+    if (pDeleteNode->mpLeft != KAVL_NULL)
+    {
+        /* find the rightmost node in the left tree. */
+        const unsigned      iStackEntry = AVLStack.cEntries;
+        KAVLTREEPTR        *ppLeftLeast = &pDeleteNode->mpLeft;
+        register KAVLNODE  *pLeftLeast = KAVL_GET_POINTER(ppLeftLeast);
+
+        while (pLeftLeast->mpRight != KAVL_NULL)
+        {
+            kHlpAssert(AVLStack.cEntries < KAVL_MAX_STACK);
+            AVLStack.aEntries[AVLStack.cEntries++] = ppLeftLeast;
+            ppLeftLeast = &pLeftLeast->mpRight;
+            pLeftLeast  = KAVL_GET_POINTER(ppLeftLeast);
+        }
+
+        /* link out pLeftLeast */
+        KAVL_SET_POINTER_NULL(ppLeftLeast, &pLeftLeast->mpLeft);
+
+        /* link it in place of the delete node. */
+        KAVL_SET_POINTER_NULL(&pLeftLeast->mpLeft, &pDeleteNode->mpLeft);
+        KAVL_SET_POINTER_NULL(&pLeftLeast->mpRight, &pDeleteNode->mpRight);
+        pLeftLeast->mHeight = pDeleteNode->mHeight;
+        KAVL_SET_POINTER(ppDeleteNode, pLeftLeast);
+        AVLStack.aEntries[iStackEntry] = &pLeftLeast->mpLeft;
+    }
+    else
+    {
+        KAVL_SET_POINTER_NULL(ppDeleteNode, &pDeleteNode->mpRight);
+        AVLStack.cEntries--;
+    }
+
+    KAVL_FN(Rebalance)(&AVLStack);
+
+    KAVL_LOOKTHRU_INVALIDATE_NODE(pRoot, pDeleteNode, Key);
+
+    KAVL_WRITE_UNLOCK(pRoot);
+    return pDeleteNode;
+}
+
diff --git a/src/lib/kStuff/include/k/kAvlTmpl/kAvlDestroy.h b/src/lib/kStuff/include/k/kAvlTmpl/kAvlDestroy.h
new file mode 100644
index 0000000..17115f3
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvlTmpl/kAvlDestroy.h
@@ -0,0 +1,129 @@
+/* $Id: kAvlDestroy.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kAvlTmpl - Templated AVL Trees, Destroy the tree.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Destroys the specified tree, starting with the root node and working our way down.
+ *
+ * @returns 0 on success.
+ * @returns Return value from callback on failure. On failure, the tree will be in
+ *          an unbalanced condition and only further calls to the Destroy should be
+ *          made on it. Note that the node we fail on will be considered dead and
+ *          no action is taken to link it back into the tree.
+ * @param   pRoot           Pointer to the AVL-tree root structure.
+ * @param   pfnCallBack     Pointer to callback function.
+ * @param   pvUser          User parameter passed on to the callback function.
+ */
+KAVL_DECL(int) KAVL_FN(Destroy)(KAVLROOT *pRoot, KAVL_TYPE(PFN,CALLBACK) pfnCallBack, void *pvUser)
+{
+#ifdef KAVL_LOOKTHRU
+    unsigned    i;
+#endif
+    unsigned    cEntries;
+    KAVLNODE   *apEntries[KAVL_MAX_STACK];
+    int         rc;
+
+    KAVL_WRITE_LOCK(pRoot);
+    if (pRoot->mpRoot == KAVL_NULL)
+    {
+        KAVL_WRITE_UNLOCK(pRoot);
+        return 0;
+    }
+
+#ifdef KAVL_LOOKTHRU
+    /*
+     * Kill the lookthru cache.
+     */
+    for (i = 0; i < (KAVL_LOOKTHRU); i++)
+        pRoot->maLookthru[i] = KAVL_NULL;
+#endif
+
+    cEntries = 1;
+    apEntries[0] = KAVL_GET_POINTER(&pRoot->mpRoot);
+    while (cEntries > 0)
+    {
+        /*
+         * Process the subtrees first.
+         */
+        KAVLNODE *pNode = apEntries[cEntries - 1];
+        if (pNode->mpLeft != KAVL_NULL)
+            apEntries[cEntries++] = KAVL_GET_POINTER(&pNode->mpLeft);
+        else if (pNode->mpRight != KAVL_NULL)
+            apEntries[cEntries++] = KAVL_GET_POINTER(&pNode->mpRight);
+        else
+        {
+#ifdef KAVL_EQUAL_ALLOWED
+            /*
+             * Process nodes with the same key.
+             */
+            while (pNode->pList != KAVL_NULL)
+            {
+                KAVLNODE *pEqual = KAVL_GET_POINTER(&pNode->pList);
+                KAVL_SET_POINTER(&pNode->pList, KAVL_GET_POINTER_NULL(&pEqual->pList));
+                pEqual->pList = KAVL_NULL;
+
+                rc = pfnCallBack(pEqual, pvUser);
+                if (rc)
+                {
+                    KAVL_WRITE_UNLOCK(pRoot);
+                    return rc;
+                }
+            }
+#endif
+
+            /*
+             * Unlink the node.
+             */
+            if (--cEntries > 0)
+            {
+                KAVLNODE *pParent = apEntries[cEntries - 1];
+                if (KAVL_GET_POINTER(&pParent->mpLeft) == pNode)
+                    pParent->mpLeft = KAVL_NULL;
+                else
+                    pParent->mpRight = KAVL_NULL;
+            }
+            else
+                pRoot->mpRoot = KAVL_NULL;
+
+            kHlpAssert(pNode->mpLeft == KAVL_NULL);
+            kHlpAssert(pNode->mpRight == KAVL_NULL);
+            rc = pfnCallBack(pNode, pvUser);
+            if (rc)
+            {
+                KAVL_WRITE_UNLOCK(pRoot);
+                return rc;
+            }
+        }
+    } /* while */
+    kHlpAssert(pRoot->mpRoot == KAVL_NULL);
+
+    KAVL_WRITE_UNLOCK(pRoot);
+    return 0;
+}
+
diff --git a/src/lib/kStuff/include/k/kAvlTmpl/kAvlDoWithAll.h b/src/lib/kStuff/include/k/kAvlTmpl/kAvlDoWithAll.h
new file mode 100644
index 0000000..f2eaba1
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvlTmpl/kAvlDoWithAll.h
@@ -0,0 +1,166 @@
+/* $Id: kAvlDoWithAll.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kAvlTmpl - Templated AVL Trees, The Callback Iterator.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Stack used by DoWithAll to avoid recusive function calls.
+ */
+typedef struct
+{
+    unsigned        cEntries;
+    KAVLNODE       *aEntries[KAVL_MAX_STACK];
+    char            achFlags[KAVL_MAX_STACK];
+    KAVLROOT        pRoot;
+} KAVL_INT(STACK2);
+
+
+/**
+ * Iterates thru all nodes in the given tree.
+ *
+ * @returns   0 on success. Return from callback on failure.
+ * @param     pRoot        Pointer to the AVL-tree root structure.
+ * @param     fFromLeft    K_TRUE:  Left to right.
+ *                         K_FALSE: Right to left.
+ * @param     pfnCallBack  Pointer to callback function.
+ * @param     pvUser       User parameter passed on to the callback function.
+ */
+KAVL_DECL(int) KAVL_FN(DoWithAll)(KAVLROOT *pRoot, KBOOL fFromLeft, KAVL_TYPE(PFN,CALLBACK) pfnCallBack, void *pvUser)
+{
+    KAVL_INT(STACK2)    AVLStack;
+    KAVLNODE           *pNode;
+#ifdef KAVL_EQUAL_ALLOWED
+    KAVLNODE           *pEqual;
+#endif
+    int                 rc;
+
+    KAVL_READ_LOCK(pRoot);
+    if (pRoot->mpRoot == KAVL_NULL)
+    {
+        KAVL_READ_UNLOCK(pRoot);
+        return 0;
+    }
+
+    AVLStack.cEntries = 1;
+    AVLStack.achFlags[0] = 0;
+    AVLStack.aEntries[0] = KAVL_GET_POINTER(&pRoot->mpRoot);
+
+    if (fFromLeft)
+    {   /* from left */
+        while (AVLStack.cEntries > 0)
+        {
+            pNode = AVLStack.aEntries[AVLStack.cEntries - 1];
+
+            /* left */
+            if (!AVLStack.achFlags[AVLStack.cEntries - 1]++)
+            {
+                if (pNode->mpLeft != KAVL_NULL)
+                {
+                    AVLStack.achFlags[AVLStack.cEntries] = 0; /* 0 first, 1 last */
+                    AVLStack.aEntries[AVLStack.cEntries++] = KAVL_GET_POINTER(&pNode->mpLeft);
+                    continue;
+                }
+            }
+
+            /* center */
+            rc = pfnCallBack(pNode, pvUser);
+            if (rc)
+                return rc;
+#ifdef KAVL_EQUAL_ALLOWED
+            if (pNode->mpList != KAVL_NULL)
+                for (pEqual = KAVL_GET_POINTER(&pNode->mpList); pEqual; pEqual = KAVL_GET_POINTER_NULL(&pEqual->mpList))
+                {
+                    rc = pfnCallBack(pEqual, pvUser);
+                    if (rc)
+                    {
+                        KAVL_READ_UNLOCK(pRoot);
+                        return rc;
+                    }
+                }
+#endif
+
+            /* right */
+            AVLStack.cEntries--;
+            if (pNode->mpRight != KAVL_NULL)
+            {
+                AVLStack.achFlags[AVLStack.cEntries] = 0;
+                AVLStack.aEntries[AVLStack.cEntries++] = KAVL_GET_POINTER(&pNode->mpRight);
+            }
+        } /* while */
+    }
+    else
+    {   /* from right */
+        while (AVLStack.cEntries > 0)
+        {
+            pNode = AVLStack.aEntries[AVLStack.cEntries - 1];
+
+            /* right */
+            if (!AVLStack.achFlags[AVLStack.cEntries - 1]++)
+            {
+                if (pNode->mpRight != KAVL_NULL)
+                {
+                    AVLStack.achFlags[AVLStack.cEntries] = 0;  /* 0 first, 1 last */
+                    AVLStack.aEntries[AVLStack.cEntries++] = KAVL_GET_POINTER(&pNode->mpRight);
+                    continue;
+                }
+            }
+
+            /* center */
+            rc = pfnCallBack(pNode, pvUser);
+            if (rc)
+                return rc;
+#ifdef KAVL_EQUAL_ALLOWED
+            if (pNode->mpList != KAVL_NULL)
+                for (pEqual = KAVL_GET_POINTER(&pNode->mpList); pEqual; pEqual = KAVL_GET_POINTER_NULL(&pEqual->pList))
+                {
+                    rc = pfnCallBack(pEqual, pvUser);
+                    if (rc)
+                    {
+                        KAVL_READ_UNLOCK(pRoot);
+                        return rc;
+                    }
+                }
+#endif
+
+            /* left */
+            AVLStack.cEntries--;
+            if (pNode->mpLeft != KAVL_NULL)
+            {
+                AVLStack.achFlags[AVLStack.cEntries] = 0;
+                AVLStack.aEntries[AVLStack.cEntries++] = KAVL_GET_POINTER(&pNode->mpLeft);
+            }
+        } /* while */
+    }
+
+    KAVL_READ_UNLOCK(pRoot);
+    return 0;
+}
+
diff --git a/src/lib/kStuff/include/k/kAvlTmpl/kAvlEnum.h b/src/lib/kStuff/include/k/kAvlTmpl/kAvlEnum.h
new file mode 100644
index 0000000..da151d1
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvlTmpl/kAvlEnum.h
@@ -0,0 +1,187 @@
+/* $Id: kAvlEnum.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kAvlTmpl - Templated AVL Trees, Node Enumeration.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Enumeration control data.
+ *
+ * This is initialized by BeginEnum and used by GetNext to figure out what
+ * to do next.
+ */
+typedef struct KAVL_TYPE(,ENUMDATA)
+{
+    KBOOL               fFromLeft;
+    KI8                 cEntries;
+    KU8                 achFlags[KAVL_MAX_STACK];
+    KAVLNODE *          aEntries[KAVL_MAX_STACK];
+} KAVL_TYPE(,ENUMDATA), *KAVL_TYPE(P,ENUMDATA);
+
+
+/**
+ * Ends an enumeration.
+ *
+ * The purpose of this function is to unlock the tree should the
+ * AVL implementation include locking. It's good practice to call
+ * it anyway even if the tree doesn't do any locking.
+ *
+ * @param   pEnumData   Pointer to enumeration control data.
+ */
+KAVL_DECL(void) KAVL_FN(EndEnum)(KAVL_TYPE(,ENUMDATA) *pEnumData)
+{
+    KAVLROOT pRoot = pEnumData->pRoot;
+    pEnumData->pRoot = NULL;
+    if (pRoot)
+        KAVL_READ_UNLOCK(pEnumData->pRoot);
+}
+
+
+/**
+ * Get the next node in the tree enumeration.
+ *
+ * The current implementation of this function willl not walk the mpList
+ * chain like the DoWithAll function does. This may be changed later.
+ *
+ * @returns Pointer to the next node in the tree.
+ *          NULL is returned when the end of the tree has been reached,
+ *          it is not necessary to call EndEnum in this case.
+ * @param   pEnumData   Pointer to enumeration control data.
+ */
+KAVL_DECL(KAVLNODE *) KAVL_FN(GetNext)(KAVL_TYPE(,ENUMDATA) *pEnumData)
+{
+    if (pEnumData->fFromLeft)
+    {   /* from left */
+        while (pEnumData->cEntries > 0)
+        {
+            KAVLNODE *pNode = pEnumData->aEntries[pEnumData->cEntries - 1];
+
+            /* left */
+            if (pEnumData->achFlags[pEnumData->cEntries - 1] == 0)
+            {
+                pEnumData->achFlags[pEnumData->cEntries - 1]++;
+                if (pNode->mpLeft != KAVL_NULL)
+                {
+                    pEnumData->achFlags[pEnumData->cEntries] = 0; /* 0 left, 1 center, 2 right */
+                    pEnumData->aEntries[pEnumData->cEntries++] = KAVL_GET_POINTER(&pNode->mpLeft);
+                    continue;
+                }
+            }
+
+            /* center */
+            if (pEnumData->achFlags[pEnumData->cEntries - 1] == 1)
+            {
+                pEnumData->achFlags[pEnumData->cEntries - 1]++;
+                return pNode;
+            }
+
+            /* right */
+            pEnumData->cEntries--;
+            if (pNode->mpRight != KAVL_NULL)
+            {
+                pEnumData->achFlags[pEnumData->cEntries] = 0;
+                pEnumData->aEntries[pEnumData->cEntries++] = KAVL_GET_POINTER(&pNode->mpRight);
+            }
+        } /* while */
+    }
+    else
+    {   /* from right */
+        while (pEnumData->cEntries > 0)
+        {
+            KAVLNODE *pNode = pEnumData->aEntries[pEnumData->cEntries - 1];
+
+            /* right */
+            if (pEnumData->achFlags[pEnumData->cEntries - 1] == 0)
+            {
+                pEnumData->achFlags[pEnumData->cEntries - 1]++;
+                if (pNode->mpRight != KAVL_NULL)
+                {
+                    pEnumData->achFlags[pEnumData->cEntries] = 0;  /* 0 right, 1 center, 2 left */
+                    pEnumData->aEntries[pEnumData->cEntries++] = KAVL_GET_POINTER(&pNode->mpRight);
+                    continue;
+                }
+            }
+
+            /* center */
+            if (pEnumData->achFlags[pEnumData->cEntries - 1] == 1)
+            {
+                pEnumData->achFlags[pEnumData->cEntries - 1]++;
+                return pNode;
+            }
+
+            /* left */
+            pEnumData->cEntries--;
+            if (pNode->mpLeft != KAVL_NULL)
+            {
+                pEnumData->achFlags[pEnumData->cEntries] = 0;
+                pEnumData->aEntries[pEnumData->cEntries++] = KAVL_GET_POINTER(&pNode->mpLeft);
+            }
+        } /* while */
+    }
+
+    /*
+     * Call EndEnum.
+     */
+    KAVL_FN(EndEnum)(pEnumData);
+    return NULL;
+}
+
+
+/**
+ * Starts an enumeration of all nodes in the given AVL tree.
+ *
+ * The current implementation of this function will not walk the mpList
+ * chain like the DoWithAll function does. This may be changed later.
+ *
+ * @returns Pointer to the first node in the enumeration.
+ *          If NULL is returned the tree is empty calling EndEnum isn't
+ *          strictly necessary (although it will do no harm).
+ * @param   pRoot           Pointer to the AVL-tree root structure.
+ * @param   pEnumData       Pointer to enumeration control data.
+ * @param   fFromLeft       K_TRUE:  Left to right.
+ *                          K_FALSE: Right to left.
+ */
+KAVL_DECL(KAVLNODE *) KAVL_FN(BeginEnum)(KAVLROOT *pRoot, KAVL_TYPE(,ENUMDATA) *pEnumData, KBOOL fFromLeft)
+{
+    KAVL_READ_LOCK(pRoot);
+    pEnumData->pRoot = pRoot;
+    if (pRoot->mpRoot != KAVL_NULL)
+    {
+        pEnumData->fFromLeft = fFromLeft;
+        pEnumData->cEntries = 1;
+        pEnumData->aEntries[0] = KAVL_GET_POINTER(pRoot->mpRoot);
+        pEnumData->achFlags[0] = 0;
+    }
+    else
+        pEnumData->cEntries = 0;
+
+    return KAVL_FN(GetNext)(pEnumData);
+}
+
diff --git a/src/lib/kStuff/include/k/kAvlTmpl/kAvlGet.h b/src/lib/kStuff/include/k/kAvlTmpl/kAvlGet.h
new file mode 100644
index 0000000..a80eb49
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvlTmpl/kAvlGet.h
@@ -0,0 +1,89 @@
+/* $Id: kAvlGet.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kAvlTmpl - Templated AVL Trees, Get a Node.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Gets a node from the tree (does not remove it!)
+ *
+ * @returns Pointer to the node holding the given key.
+ * @param   pRoot       Pointer to the AVL-tree root structure.
+ * @param   Key         Key value of the node which is to be found.
+ */
+KAVL_DECL(KAVLNODE *) KAVL_FN(Get)(KAVLROOT *pRoot, KAVLKEY Key)
+{
+    KAVLNODE *pNode;
+#ifdef KAVL_LOOKTHRU_CACHE
+    KAVLTREEPTR *ppEntry;
+#endif
+
+    KAVL_READ_LOCK(pRoot);
+    if (pRoot->mpRoot == KAVL_NULL)
+    {
+        KAVL_READ_UNLOCK(pRoot);
+        return NULL;
+    }
+
+#ifdef KAVL_LOOKTHRU_CACHE
+    ppEntry = &pRoot->maLookthru[KAVL_LOOKTHRU_HASH(Key)];
+    pNode = KAVL_GET_POINTER_NULL(ppEntry);
+    if (!pNode || KAVL_NE(pNode->mKey, Key))
+#endif
+    {
+        pNode = KAVL_GET_POINTER(&pRoot->mpRoot);
+        while (KAVL_NE(pNode->mKey, Key))
+        {
+            if (KAVL_G(pNode->mKey, Key))
+            {
+                if (pNode->mpLeft == KAVL_NULL)
+                {
+                    KAVL_READ_UNLOCK(pRoot);
+                    return NULL;
+                }
+                pNode = KAVL_GET_POINTER(&pNode->mpLeft);
+            }
+            else
+            {
+                if (pNode->mpRight == KAVL_NULL)
+                {
+                    KAVL_READ_UNLOCK(pRoot);
+                    return NULL;
+                }
+                pNode = KAVL_GET_POINTER(&pNode->mpRight);
+            }
+        }
+
+#ifdef KAVL_LOOKTHRU_CACHE
+        KAVL_SET_POINTER(ppEntry, pNode);
+#endif
+    }
+
+    KAVL_READ_UNLOCK(pRoot);
+    return pNode;
+}
+
diff --git a/src/lib/kStuff/include/k/kAvlTmpl/kAvlGetBestFit.h b/src/lib/kStuff/include/k/kAvlTmpl/kAvlGetBestFit.h
new file mode 100644
index 0000000..1d51709
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvlTmpl/kAvlGetBestFit.h
@@ -0,0 +1,112 @@
+/* $Id: kAvlGetBestFit.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kAvlTmpl - Templated AVL Trees, Get Best Fitting Node.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Finds the best fitting node in the tree for the given Key value.
+ *
+ * @returns Pointer to the best fitting node found.
+ * @param   pRoot           Pointer to the AVL-tree root structure.
+ * @param   Key             The Key of which is to be found a best fitting match for..
+ * @param   fAbove          K_TRUE:  Returned node is have the closest key to Key from above.
+ *                          K_FALSE: Returned node is have the closest key to Key from below.
+ * @sketch  The best fitting node is always located in the searchpath above you.
+ *          >= (above): The node where you last turned left.
+ *          <= (below): the node where you last turned right.
+ */
+KAVL_DECL(KAVLNODE *) KAVL_FN(GetBestFit)(KAVLROOT *pRoot, KAVLKEY Key, KBOOL fAbove)
+{
+    register KAVLNODE  *pNode;
+    KAVLNODE           *pNodeLast;
+
+    KAVL_READ_LOCK(pLook);
+    if (pRoot->mpRoot == KAVL_NULL)
+    {
+        KAVL_READ_UNLOCK(pLook);
+        return NULL;
+    }
+
+    pNode = KAVL_GET_POINTER(&pRoot->mpRoot);
+    pNodeLast = NULL;
+    if (fAbove)
+    {   /* pNode->mKey >= Key */
+        while (KAVL_NE(pNode->mKey, Key))
+        {
+            if (KAVL_G(pNode->mKey, Key))
+            {
+                if (pNode->mpLeft == KAVL_NULL)
+                {
+                    KAVL_READ_UNLOCK(pLook);
+                    return pNode;
+                }
+                pNodeLast = pNode;
+                pNode = KAVL_GET_POINTER(&pNode->mpLeft);
+            }
+            else
+            {
+                if (pNode->mpRight == KAVL_NULL)
+                {
+                    KAVL_READ_UNLOCK(pLook);
+                    return pNodeLast;
+                }
+                pNode = KAVL_GET_POINTER(&pNode->mpRight);
+            }
+        }
+    }
+    else
+    {   /* pNode->mKey <= Key */
+        while (KAVL_NE(pNode->mKey, Key))
+        {
+            if (KAVL_G(pNode->mKey, Key))
+            {
+                if (pNode->mpLeft == KAVL_NULL)
+                {
+                    KAVL_READ_UNLOCK(pLook);
+                    return pNodeLast;
+                }
+                pNode = KAVL_GET_POINTER(&pNode->mpLeft);
+            }
+            else
+            {
+                if (pNode->mpRight == KAVL_NULL)
+                {
+                    KAVL_READ_UNLOCK(pLook);
+                    return pNode;
+                }
+                pNodeLast = pNode;
+                pNode = KAVL_GET_POINTER(&pNode->mpRight);
+            }
+        }
+    }
+
+    /* perfect match or nothing. */
+    KAVL_READ_UNLOCK(pLook);
+    return pNode;
+}
+
diff --git a/src/lib/kStuff/include/k/kAvlTmpl/kAvlGetWithParent.h b/src/lib/kStuff/include/k/kAvlTmpl/kAvlGetWithParent.h
new file mode 100644
index 0000000..997c394
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvlTmpl/kAvlGetWithParent.h
@@ -0,0 +1,65 @@
+/* $Id: kAvlGetWithParent.h 34 2009-11-08 19:38:40Z bird $ */
+/** @file
+ * kAvlTmpl - Templated AVL Trees, Get Node With Parent.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Gets a node from the tree and its parent node (if any).
+ * The tree remains unchanged.
+ *
+ * @returns Pointer to the node holding the given key.
+ * @param   pRoot       Pointer to the AVL-tree root structure.
+ * @param   ppParent    Pointer to a variable which will hold the pointer to the partent node on
+ *                      return. When no node is found, this will hold the last searched node.
+ * @param   Key         Key value of the node which is to be found.
+ */
+KAVL_DECL(KAVLNODE *) KAVL_FN(GetWithParent)(KAVLROOT *pRoot, KAVLNODE **ppParent, KAVLKEY Key)
+{
+    register KAVLNODE *pNode;
+    register KAVLNODE *pParent;
+
+    KAVL_READ_LOCK(pRoot);
+
+    pParent = NULL;
+    pNode = KAVL_GET_POINTER_NULL(&pRoot->mpRoot);
+    while (     pNode != NULL
+           &&   KAVL_NE(pNode->mKey, Key))
+    {
+        pParent = pNode;
+        if (KAVL_G(pNode->mKey, Key))
+            pNode = KAVL_GET_POINTER_NULL(&pNode->mpLeft);
+        else
+            pNode = KAVL_GET_POINTER_NULL(&pNode->mpRight);
+    }
+
+    KAVL_READ_UNLOCK(pRoot);
+
+    *ppParent = pParent;
+    return pNode;
+}
+
diff --git a/src/lib/kStuff/include/k/kAvlTmpl/kAvlRemove2.h b/src/lib/kStuff/include/k/kAvlTmpl/kAvlRemove2.h
new file mode 100644
index 0000000..d027014
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvlTmpl/kAvlRemove2.h
@@ -0,0 +1,133 @@
+/* $Id: kAvlRemove2.h 34 2009-11-08 19:38:40Z bird $ */
+/** @file
+ * kAvlTmpl - Templated AVL Trees, Remove A Specific Node.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Removes the specified node from the tree.
+ *
+ * @returns Pointer to the removed node (NULL if not in the tree)
+ * @param   pRoot       Pointer to the AVL-tree root structure.
+ * @param   Key         The Key of which is to be found a best fitting match for..
+ *
+ * @remark  This implementation isn't the most efficient, but this short and
+ *          easier to manage.
+ */
+KAVL_DECL(KAVLNODE *) KAVL_FN(Remove2)(KAVLROOT *pRoot, KAVLNODE *pNode)
+{
+#ifdef KAVL_EQUAL_ALLOWED
+    /*
+     * Find the right node by key and see if it's what we want.
+     */
+    KAVLNODE *pParent;
+    KAVLNODE *pCurNode = KAVL_FN(GetWithParent)(pRoot, pNode->mKey, &pParent);
+    if (!pCurNode)
+        return NULL;
+    KAVL_WRITE_LOCK(pRoot); /** @todo the locking here isn't 100% sane. The only way to archive that is by no calling worker functions. */
+    if (pCurNode != pNode)
+    {
+        /*
+         * It's not the one we want, but it could be in the duplicate list.
+         */
+        while (pCurNode->mpList != KAVL_NULL)
+        {
+            KAVLNODE *pNext = KAVL_GET_POINTER(&pCurNode->mpList);
+            if (pNext == pNode)
+            {
+                KAVL_SET_POINTER_NULL(&pCurNode->mpList, KAVL_GET_POINTER_NULL(&pNode->mpList));
+                pNode->mpList = KAVL_NULL;
+                KAVL_LOOKTHRU_INVALIDATE_NODE(pRoot, pNode, pNode->mKey);
+                KAVL_WRITE_UNLOCK(pRoot);
+                return pNode;
+            }
+            pCurNode = pNext;
+        }
+        KAVL_WRITE_UNLOCK(pRoot);
+        return NULL;
+    }
+
+    /*
+     * Ok, it's the one we want alright.
+     *
+     * Simply remove it if it's the only one with they Key,
+     * if there are duplicates we'll have to unlink it and
+     * insert the first duplicate in our place.
+     */
+    if (pNode->mpList == KAVL_NULL)
+    {
+        KAVL_WRITE_UNLOCK(pRoot);
+        KAVL_FN(Remove)(pRoot, pNode->mKey);
+    }
+    else
+    {
+        KAVLNODE *pNewUs = KAVL_GET_POINTER(&pNode->mpList);
+
+        pNewUs->mHeight = pNode->mHeight;
+
+        if (pNode->mpLeft != KAVL_NULL)
+            KAVL_SET_POINTER(&pNewUs->mpLeft, KAVL_GET_POINTER(&pNode->mpLeft))
+        else
+            pNewUs->mpLeft = KAVL_NULL;
+
+        if (pNode->mpRight != KAVL_NULL)
+            KAVL_SET_POINTER(&pNewUs->mpRight, KAVL_GET_POINTER(&pNode->mpRight))
+        else
+            pNewUs->mpRight = KAVL_NULL;
+
+        if (pParent)
+        {
+            if (KAVL_GET_POINTER_NULL(&pParent->mpLeft) == pNode)
+                KAVL_SET_POINTER(&pParent->mpLeft, pNewUs);
+            else
+                KAVL_SET_POINTER(&pParent->mpRight, pNewUs);
+        }
+        else
+            KAVL_SET_POINTER(&pRoot->mpRoot, pNewUs);
+
+        KAVL_LOOKTHRU_INVALIDATE_NODE(pRoot, pNode, pNode->mKey);
+        KAVL_WRITE_UNLOCK(pRoot);
+    }
+
+    return pNode;
+
+#else
+    /*
+     * Delete it, if we got the wrong one, reinsert it.
+     *
+     * This ASSUMS that the caller is NOT going to hand us a lot
+     * of wrong nodes but just uses this API for his convenience.
+     */
+    KAVLNODE *pRemovedNode = KAVL_FN(Remove)(pRoot, pNode->mKey);
+    if (pRemovedNode == pNode)
+        return pRemovedNode;
+
+    KAVL_FN(Insert)(pRoot, pRemovedNode);
+    return NULL;
+#endif
+}
+
diff --git a/src/lib/kStuff/include/k/kAvlTmpl/kAvlRemoveBestFit.h b/src/lib/kStuff/include/k/kAvlTmpl/kAvlRemoveBestFit.h
new file mode 100644
index 0000000..3c9ed98
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvlTmpl/kAvlRemoveBestFit.h
@@ -0,0 +1,70 @@
+/* $Id: kAvlRemoveBestFit.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kAvlTmpl - Templated AVL Trees, Remove Best Fitting Node.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Finds the best fitting node in the tree for the given Key value and removes the node.
+ *
+ * @returns Pointer to the removed node.
+ * @param   pRoot       Pointer to the AVL-tree root structure.
+ * @param   Key         The Key of which is to be found a best fitting match for..
+ * @param   fAbove      K_TRUE:  Returned node is have the closest key to Key from above.
+ *                      K_FALSE: Returned node is have the closest key to Key from below.
+ *
+ * @remark  This implementation uses GetBestFit and then Remove and might therefore
+ *          not be the most optimal kind of implementation, but it reduces the complexity
+ *          code size, and the likelyhood for bugs.
+ */
+KAVL_DECL(KAVLNODE *) KAVL_FN(RemoveBestFit)(KAVLROOT *pRoot, KAVLKEY Key, KBOOL fAbove)
+{
+    /*
+     * If we find anything we'll have to remove the node and return it.
+     * Now, if duplicate keys are allowed we'll remove a duplicate before
+     * removing the in-tree node as this is way cheaper.
+     */
+    KAVLNODE *pNode = KAVL_FN(GetBestFit)(pRoot, Key, fAbove);
+    if (pNode != NULL)
+    {
+#ifdef KAVL_EQUAL_ALLOWED
+        KAVL_WRITE_LOCK(pRoot); /** @todo the locking isn't quite sane here. :-/ */
+        if (pNode->mpList != KAVL_NULL)
+        {
+            KAVLNODE *pRet = KAVL_GET_POINTER(&pNode->mpList);
+            KAVL_SET_POINTER_NULL(&pNode->mpList, &pRet->mpList);
+            KAVL_LOOKTHRU_INVALIDATE_NODE(pRoot, pNode, pNode->mKey);
+            KAVL_WRITE_UNLOCK(pRoot);
+            return pRet;
+        }
+        KAVL_WRITE_UNLOCK(pRoot);
+#endif
+        pNode = KAVL_FN(Remove)(pRoot, pNode->mKey);
+    }
+    return pNode;
+}
+
diff --git a/src/lib/kStuff/include/k/kAvlTmpl/kAvlUndef.h b/src/lib/kStuff/include/k/kAvlTmpl/kAvlUndef.h
new file mode 100644
index 0000000..bd6957f
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvlTmpl/kAvlUndef.h
@@ -0,0 +1,79 @@
+/* $Id: kAvlUndef.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kAvlTmpl - Undefines All Macros (both config and temp).
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * The configuration.
+ */
+#undef KAVL_EQUAL_ALLOWED
+#undef KAVL_CHECK_FOR_EQUAL_INSERT
+#undef KAVL_MAX_STACK
+#undef KAVL_RANGE
+#undef KAVL_OFFSET
+#undef KAVL_STD_KEY_COMP
+#undef KAVL_LOOKTHRU
+#undef KAVL_LOOKTHRU_HASH
+#undef KAVL_LOCKED
+#undef KAVL_WRITE_LOCK
+#undef KAVL_WRITE_UNLOCK
+#undef KAVL_READ_LOCK
+#undef KAVL_READ_UNLOCK
+#undef KAVLKEY
+#undef KAVLNODE
+#undef KAVLTREEPTR
+#undef KAVLROOT
+#undef KAVL_FN
+#undef KAVL_TYPE
+#undef KAVL_INT
+#undef KAVL_DECL
+#undef mKey
+#undef mKeyLast
+#undef mHeight
+#undef mpLeft
+#undef mpRight
+#undef mpList
+#undef mpRoot
+#undef maLookthru
+
+/*
+ * The internal macros.
+ */
+#undef KAVL_HEIGHTOF
+#undef KAVL_GET_POINTER
+#undef KAVL_GET_POINTER_NULL
+#undef KAVL_SET_POINTER
+#undef KAVL_SET_POINTER_NULL
+#undef KAVL_NULL
+#undef KAVL_G
+#undef KAVL_E
+#undef KAVL_NE
+#undef KAVL_R_IS_IDENTICAL
+#undef KAVL_R_IS_INTERSECTING
+#undef KAVL_R_IS_IN_RANGE
+
diff --git a/src/lib/kStuff/include/k/kAvlU32.h b/src/lib/kStuff/include/k/kAvlU32.h
new file mode 100644
index 0000000..7aacb15
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvlU32.h
@@ -0,0 +1,66 @@
+/* $Id: kAvlU32.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kAvl - AVL Tree Implementation, KU32 keys.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kAvlU32_h___
+#define ___k_kAvlU32_h___
+
+typedef struct KAVLU32
+{
+    KU32                mKey;
+    KU8                 mHeight;
+    struct KAVLU32     *mpLeft;
+    struct KAVLU32     *mpRight;
+} KAVLU32, *PKAVLU32, **PPKAVLU32;
+
+/*#define KAVL_EQUAL_ALLOWED*/
+#define KAVL_CHECK_FOR_EQUAL_INSERT
+#define KAVL_MAX_STACK          32
+/*#define KAVL_RANGE */
+/*#define KAVL_OFFSET */
+#define KAVL_STD_KEY_COMP
+#define KAVLKEY                 KU32
+#define KAVLNODE            KAVLU32
+#define KAVL_FN(name)           kAvlU32 ## name
+#define KAVL_TYPE(prefix,name)  prefix ## KAVLU32 ## name
+#define KAVL_INT(name)          KAVLU32INT ## name
+#define KAVL_DECL(rettype)      K_DECL_INLINE(rettype)
+
+#include <k/kAvlTmpl/kAvlBase.h>
+#include <k/kAvlTmpl/kAvlDoWithAll.h>
+#include <k/kAvlTmpl/kAvlEnum.h>
+#include <k/kAvlTmpl/kAvlGet.h>
+#include <k/kAvlTmpl/kAvlGetBestFit.h>
+#include <k/kAvlTmpl/kAvlGetWithParent.h>
+#include <k/kAvlTmpl/kAvlRemove2.h>
+#include <k/kAvlTmpl/kAvlRemoveBestFit.h>
+#include <k/kAvlTmpl/kAvlUndef.h>
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kAvloU32.h b/src/lib/kStuff/include/k/kAvloU32.h
new file mode 100644
index 0000000..e9ad305
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvloU32.h
@@ -0,0 +1,75 @@
+/* $Id: kAvloU32.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kAvl - AVL Tree Implementation, KU32 keys, Offset Based.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kAvloU32_h___
+#define ___k_kAvloU32_h___
+
+typedef KI32 KAVLOU32PTR;
+
+typedef struct KAVLOU32
+{
+    KU32                u32;
+    KU8                 cFloorsToGo;
+    KAVLOU32PTR         offLeft;
+    KAVLOU32PTR         offRight;
+} KAVLOU32, *PKAVLOU32, **PPKAVLOU32;
+
+#define mKey                    u32
+#define mHeight                 cFloorsToGo
+#define mpLeft                  offLeft
+#define mpRight                 offRight
+
+/*#define KAVL_EQUAL_ALLOWED*/
+#define KAVL_CHECK_FOR_EQUAL_INSERT
+#define KAVL_MAX_STACK          32
+/*#define KAVL_RANGE */
+#define KAVL_OFFSET
+#define KAVL_STD_KEY_COMP
+#define KAVLKEY                 KU32
+#define KAVLTREEPTR             KAVLOU32PTR
+#define KAVLNODE                KAVLOU32
+#define KAVL_FN(name)           kAvloU32 ## name
+#define KAVL_TYPE(prefix,name)  prefix ## KAVLOU32 ## name
+#define KAVL_INT(name)          KAVLOU32INT ## name
+#define KAVL_DECL(rettype)      K_DECL_INLINE(rettype)
+
+#include <k/kAvlTmpl/kAvlBase.h>
+#include <k/kAvlTmpl/kAvlDoWithAll.h>
+#include <k/kAvlTmpl/kAvlEnum.h>
+#include <k/kAvlTmpl/kAvlGet.h>
+#include <k/kAvlTmpl/kAvlGetBestFit.h>
+#include <k/kAvlTmpl/kAvlGetWithParent.h>
+#include <k/kAvlTmpl/kAvlRemove2.h>
+#include <k/kAvlTmpl/kAvlRemoveBestFit.h>
+#include <k/kAvlTmpl/kAvlUndef.h>
+
+#endif
+
+
diff --git a/src/lib/kStuff/include/k/kAvlrU32.h b/src/lib/kStuff/include/k/kAvlrU32.h
new file mode 100644
index 0000000..532a55d
--- /dev/null
+++ b/src/lib/kStuff/include/k/kAvlrU32.h
@@ -0,0 +1,71 @@
+/* $Id: kAvlrU32.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kAvl - AVL Tree Implementation, KU32 key ranges.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kAvlrU32_h___
+#define ___k_kAvlrU32_h___
+
+typedef struct KAVLRU32
+{
+    KU32                u32Start;
+    KU32                u32Last;
+    struct KAVLRU32    *mpLeft;
+    struct KAVLRU32    *mpRight;
+    KU8                 mHeight;
+} KAVLRU32, *PKAVLRU32, **PPKAVLRU32;
+
+#define mKey                    u32Start
+#define mKeyLast                u32Last
+
+/*#define KAVL_EQUAL_ALLOWED*/
+#define KAVL_CHECK_FOR_EQUAL_INSERT
+#define KAVL_MAX_STACK          32
+#define KAVL_RANGE
+/*#define KAVL_OFFSET */
+#define KAVL_STD_KEY_COMP
+#define KAVLKEY                 KU32
+#define KAVLNODE                KAVLRU32
+#define KAVL_FN(name)           kAvlrU32 ## name
+#define KAVL_TYPE(prefix,name)  prefix ## KAVLRU32 ## name
+#define KAVL_INT(name)          KAVLRU32INT ## name
+#define KAVL_DECL(rettype)      K_DECL_INLINE(rettype)
+
+#include <k/kAvlTmpl/kAvlBase.h>
+#include <k/kAvlTmpl/kAvlDoWithAll.h>
+#include <k/kAvlTmpl/kAvlEnum.h>
+#include <k/kAvlTmpl/kAvlGet.h>
+#include <k/kAvlTmpl/kAvlGetBestFit.h>
+#include <k/kAvlTmpl/kAvlGetWithParent.h>
+#include <k/kAvlTmpl/kAvlRemove2.h>
+#include <k/kAvlTmpl/kAvlRemoveBestFit.h>
+#include <k/kAvlTmpl/kAvlUndef.h>
+
+#endif
+
+
diff --git a/src/lib/kStuff/include/k/kCpu.h b/src/lib/kStuff/include/k/kCpu.h
new file mode 100644
index 0000000..bbbf815
--- /dev/null
+++ b/src/lib/kStuff/include/k/kCpu.h
@@ -0,0 +1,68 @@
+/* $Id: kCpu.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kCpu - The CPU and Architecture API.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kCpu_h___
+#define ___k_kCpu_h___
+
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+#include <k/kCpus.h>
+
+
+/** @defgroup grp_kCpu      kCpu  - The CPU And Architecture API
+ * @{
+ */
+
+/** @def KCPU_DECL
+ * Declares a kCpu function according to build context.
+ * @param type          The return type.
+ */
+#if defined(KCPU_BUILDING_DYNAMIC)
+# define KCPU_DECL(type)        K_DECL_EXPORT(type)
+#elif defined(KCPU_BUILT_DYNAMIC)
+# define KCPU_DECL(type)        K_DECL_IMPORT(type)
+#else
+# define KCPU_DECL(type)        type
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+KCPU_DECL(void) kCpuGetArchAndCpu(PKCPUARCH penmArch, PKCPU penmCpu);
+KCPU_DECL(int)  kCpuCompare(KCPUARCH enmCodeArch, KCPU enmCodeCpu, KCPUARCH enmArch, KCPU enmCpu);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+
+#endif
diff --git a/src/lib/kStuff/include/k/kCpus.h b/src/lib/kStuff/include/k/kCpus.h
new file mode 100644
index 0000000..6fa8400
--- /dev/null
+++ b/src/lib/kStuff/include/k/kCpus.h
@@ -0,0 +1,157 @@
+/* $Id: kCpus.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kCpus - CPU Identifiers.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kCpus_h___
+#define ___k_kCpus_h___
+
+/** @defgroup grp_kCpus     kCpus - CPU Identifiers
+ * @see the kCpu API for functions operating on the CPU type.
+ * @{
+ */
+
+/**
+ * CPU Architectures.
+ *
+ * The constants used by this enum has the same values as
+ * the K_ARCH_* #defines defined by k/kDefs.h.
+ */
+typedef enum KCPUARCH
+{
+    /** @copydoc K_ARCH_UNKNOWN */
+    KCPUARCH_UNKNOWN = K_ARCH_UNKNOWN,
+    /** @copydoc K_ARCH_X86_16 */
+    KCPUARCH_X86_16 = K_ARCH_X86_16,
+    /** @copydoc K_ARCH_X86_32 */
+    KCPUARCH_X86_32 = K_ARCH_X86_32,
+    /** @copydoc K_ARCH_AMD64 */
+    KCPUARCH_AMD64 = K_ARCH_AMD64,
+    /** @copydoc K_ARCH_IA64 */
+    KCPUARCH_IA64 = K_ARCH_IA64,
+    /** @copydoc K_ARCH_ALPHA */
+    KCPUARCH_ALPHA = K_ARCH_ALPHA,
+    /** @copydoc K_ARCH_ALPHA_32 */
+    KCPUARCH_ALPHA_32 = K_ARCH_ALPHA_32,
+    /** @copydoc K_ARCH_ARM_32 */
+    KCPUARCH_ARM_32 = K_ARCH_ARM_32,
+    /** @copydoc K_ARCH_ARM_64 */
+    KCPUARCH_ARM_64 = K_ARCH_ARM_64,
+    /** @copydoc K_ARCH_MIPS_32 */
+    KCPUARCH_MIPS_32 = K_ARCH_MIPS_32,
+    /** @copydoc K_ARCH_MIPS_64 */
+    KCPUARCH_MIPS_64 = K_ARCH_MIPS_64,
+    /** @copydoc K_ARCH_POWERPC_32 */
+    KCPUARCH_POWERPC_32 = K_ARCH_POWERPC_32,
+    /** @copydoc K_ARCH_POWERPC_64 */
+    KCPUARCH_POWERPC_64 = K_ARCH_POWERPC_64,
+    /** @copydoc K_ARCH_SPARC_32 */
+    KCPUARCH_SPARC_32 = K_ARCH_SPARC_32,
+    /** @copydoc K_ARCH_SPARC_64 */
+    KCPUARCH_SPARC_64 = K_ARCH_SPARC_64,
+
+    /** Hack to blow the type up to 32-bit. */
+    KCPUARCH_32BIT_HACK = 0x7fffffff
+} KCPUARCH;
+
+/** Pointer to a CPU architecture type. */
+typedef KCPUARCH *PKCPUARCH;
+/** Pointer to a const CPU architecture type. */
+typedef const KCPUARCH *PCKCPUARCH;
+
+
+/**
+ * CPU models.
+ */
+typedef enum KCPU
+{
+    /** The usual invalid cpu. */
+    KCPU_INVALID = 0,
+
+    /** @name K_ARCH_X86_16
+     * @{ */
+    KCPU_I8086,
+    KCPU_I8088,
+    KCPU_I80186,
+    KCPU_I80286,
+    KCPU_I386_16,
+    KCPU_I486_16,
+    KCPU_I486SX_16,
+    KCPU_I586_16,
+    KCPU_I686_16,
+    KCPU_P4_16,
+    KCPU_CORE2_16,
+    KCPU_K6_16,
+    KCPU_K7_16,
+    KCPU_K8_16,
+    KCPU_FIRST_X86_16 = KCPU_I8086,
+    KCPU_LAST_X86_16 = KCPU_K8_16,
+    /** @} */
+
+    /** @name K_ARCH_X86_32
+     * @{ */
+    KCPU_X86_32_BLEND,
+    KCPU_I386,
+    KCPU_I486,
+    KCPU_I486SX,
+    KCPU_I586,
+    KCPU_I686,
+    KCPU_P4,
+    KCPU_CORE2_32,
+    KCPU_K6,
+    KCPU_K7,
+    KCPU_K8_32,
+    KCPU_FIRST_X86_32 = KCPU_I386,
+    KCPU_LAST_X86_32 = KCPU_K8_32,
+    /** @} */
+
+    /** @name K_ARCH_AMD64
+     * @{ */
+    KCPU_AMD64_BLEND,
+    KCPU_K8,
+    KCPU_P4_64,
+    KCPU_CORE2,
+    KCPU_FIRST_AMD64 = KCPU_K8,
+    KCPU_LAST_AMD64 = KCPU_CORE2,
+    /** @} */
+
+    /** The end of the valid cpu values (exclusive). */
+    KCPU_END,
+    /** Hack to blow the type up to 32-bit. */
+    KCPU_32BIT_HACK = 0x7fffffff
+} KCPU;
+
+/** Pointer to a CPU type. */
+typedef KCPU *PKCPU;
+/** Pointer to a const CPU type. */
+typedef const KCPU *PCKCPU;
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kDbg.h b/src/lib/kStuff/include/k/kDbg.h
new file mode 100644
index 0000000..07ee431
--- /dev/null
+++ b/src/lib/kStuff/include/k/kDbg.h
@@ -0,0 +1,243 @@
+/* $Id: kDbg.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kDbg - The Debug Info Reader.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kDbg_h___
+#define ___k_kDbg_h___
+
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+#include <k/kRdr.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @defgroup grp_kDbg      Debug Info Reader
+ * @{
+ */
+
+/** @def KDBG_DECL
+ * Declares a kDbg function according to build context.
+ * @param type          The return type.
+ */
+#if defined(KDBG_BUILDING_DYNAMIC)
+# define KDBG_DECL(type)        K_DECL_EXPORT(type)
+#elif defined(KDBG_BUILT_DYNAMIC)
+# define KDBG_DECL(type)        K_DECL_IMPORT(type)
+#else
+# define KDBG_DECL(type)        type
+#endif
+
+
+/** The kDbg address type. */
+typedef KU64                    KDBGADDR;
+/** Pointer to a kDbg address. */
+typedef KDBGADDR               *PKDBGADDR;
+/** Pointer to a const kDbg address. */
+typedef const KDBGADDR         *PCKDBGADDR;
+/** @def KDBGADDR_PRI
+ * printf format type. */
+#define KDBGADDR_PRI            KX64_PRI
+/** @def KDBGADDR_MAX
+ * Max kDbg address value. */
+#define KDBGADDR_MAX            KU64_C(0xfffffffffffffffe)
+/** @def KDBGADDR_C
+ * kDbg address constant.
+ * @param c         The constant value. */
+#define KDBGADDR_C(c)           KU64_C(c)
+/** NIL address. */
+#define NIL_KDBGADDR            KU64_MAX
+
+
+/** @name   Special Segments
+ * @{ */
+/** Relative Virtual Address.
+ * The specified offset is relative to the image base. The image base is the lowest memory
+ * address used by the image when loaded with the address assignments indicated in the image. */
+#define KDBGSEG_RVA             (-1)
+/** Absolute segment. The offset isn't relative to anything. */
+#define KDBGSEG_ABS             (-2)
+/** @} */
+
+
+/** The max filename path length used by the debug reader. */
+#define KDBG_PATH_MAX           260
+
+/**
+ * Line number details.
+ */
+typedef struct KDBGLINE
+{
+    /** The relative virtual address. */
+    KDBGADDR    RVA;
+    /** The offset into the segment. */
+    KDBGADDR    offSegment;
+    /** The segment number. */
+    KI32        iSegment;
+    /** The Line number. */
+    KU32        iLine;
+    /** The actual size of this structure. */
+    KU16        cbSelf;
+    /** The length of the filename. */
+    KU16        cchFile;
+    /** The name of the file this line number relates to. */
+    char        szFile[KDBG_PATH_MAX];
+} KDBGLINE;
+/** Pointer to line number details. */
+typedef KDBGLINE *PKDBGLINE;
+/** Pointer to const line number details. */
+typedef const KDBGLINE *PCKDBGLINE;
+/** Pointer to a pointer to line number details. */
+typedef PKDBGLINE *PPKDBGLINE;
+
+/**
+ * Duplicates a line number.
+ *
+ * To save heap space, the returned line number will not own more heap space
+ * than it strictly need to. So, it's not possible to append stuff to the symbol
+ * or anything of that kind.
+ *
+ * @returns Pointer to the duplicate.
+ *          This must be freed using RTDbgSymbolFree().
+ * @param   pLine       The line number to be duplicated.
+ */
+KDBG_DECL(PKDBGLINE) kDbgLineDup(PCKDBGLINE pLine);
+
+/**
+ * Frees a line number obtained from the RTDbg API.
+ *
+ * @returns VINF_SUCCESS on success.
+ * @returns KERR_INVALID_POINTER if a NULL pointer or an !KDBG_VALID_PTR() is passed in.
+ *
+ * @param   pLine       The line number to be freed.
+ */
+KDBG_DECL(int) kDbgLineFree(PKDBGLINE pLine);
+
+
+/** @name Symbol Flags.
+ * @{ */
+/** The symbol is weak. */
+#define KDBGSYM_FLAGS_WEAK      KU32_C(0x00000000)
+/** The symbol is absolute.
+ * (This also indicated by the segment number.) */
+#define KDBGSYM_FLAGS_ABS       KU32_C(0x00000001)
+/** The symbol is exported. */
+#define KDBGSYM_FLAGS_EXPORTED  KU32_C(0x00000002)
+/** The symbol is a function/method/procedure/whatever-executable-code. */
+#define KDBGSYM_FLAGS_CODE      KU32_C(0x00000004)
+/** The symbol is some kind of data. */
+#define KDBGSYM_FLAGS_DATA      KU32_C(0x00000008)
+/** @} */
+
+/** The max symbol name length used by the debug reader. */
+#define KDBG_SYMBOL_MAX         384
+
+/**
+ * Symbol details.
+ */
+typedef struct KDBGSYMBOL
+{
+    /** The adddress of this symbol in the relevant space.
+     * This is NIL_KDBGADDR unless the information was
+     * returned by a kDbgSpace API. */
+    KDBGADDR    Address;
+    /** The relative virtual address. */
+    KDBGADDR    RVA;
+    /** The symbol size.
+     * This is not a reliable field, it could be a bad guess. Ignore if zero. */
+    KDBGADDR    cb;
+    /** The offset into the segment. */
+    KDBGADDR    offSegment;
+    /** The segment number. */
+    KI32        iSegment;
+    /** The symbol flags. */
+    KU32        fFlags;
+/** @todo type info. */
+    /** The actual size of this structure. */
+    KU16        cbSelf;
+    /** The length of the symbol name. */
+    KU16        cchName;
+    /** The symbol name. */
+    char        szName[KDBG_SYMBOL_MAX];
+} KDBGSYMBOL;
+/** Pointer to symbol details. */
+typedef KDBGSYMBOL *PKDBGSYMBOL;
+/** Pointer to const symbol details. */
+typedef const KDBGSYMBOL *PCKDBGSYMBOL;
+/** Pointer to a pointer to symbol details. */
+typedef PKDBGSYMBOL *PPKDBGSYMBOL;
+
+/**
+ * Duplicates a symbol.
+ *
+ * To save heap space, the returned symbol will not own more heap space than
+ * it strictly need to. So, it's not possible to append stuff to the symbol
+ * or anything of that kind.
+ *
+ * @returns Pointer to the duplicate.
+ *          This must be freed using kDbgSymbolFree().
+ * @param   pSymbol     The symbol to be freed.
+ */
+KDBG_DECL(PKDBGSYMBOL) kDbgSymbolDup(PCKDBGSYMBOL pSymbol);
+
+/**
+ * Frees a symbol obtained from the kDbg API.
+ *
+ * @returns VINF_SUCCESS on success.
+ * @returns KERR_INVALID_POINTER if a NULL pointer or an !KDBG_VALID_PTR() is passed in.
+ *
+ * @param   pSymbol     The symbol to be freed.
+ */
+KDBG_DECL(int) kDbgSymbolFree(PKDBGSYMBOL pSymbol);
+
+
+/** Pointer to a debug module. */
+typedef struct KDBGMOD *PKDBGMOD;
+/** Pointer to a debug module pointer. */
+typedef PKDBGMOD *PPKDBGMOD;
+
+
+KDBG_DECL(int) kDbgModuleOpen(PPKDBGMOD ppDbgMod, const char *pszFilename, struct KLDRMOD *pLdrMod);
+KDBG_DECL(int) kDbgModuleOpenFile(PPKDBGMOD ppDbgMod, PKRDR pRdr, struct KLDRMOD *pLdrMod);
+KDBG_DECL(int) kDbgModuleOpenFilePart(PPKDBGMOD ppDbgMod, PKRDR pRdr, KFOFF off, KFOFF cb, struct KLDRMOD *pLdrMod);
+KDBG_DECL(int) kDbgModuleClose(PKDBGMOD pMod);
+KDBG_DECL(int) kDbgModuleQuerySymbol(PKDBGMOD pMod, KI32 iSegment, KDBGADDR off, PKDBGSYMBOL pSym);
+KDBG_DECL(int) kDbgModuleQuerySymbolA(PKDBGMOD pMod, KI32 iSegment, KDBGADDR off, PPKDBGSYMBOL ppSym);
+KDBG_DECL(int) kDbgModuleQueryLine(PKDBGMOD pMod, KI32 iSegment, KDBGADDR off, PKDBGLINE pLine);
+KDBG_DECL(int) kDbgModuleQueryLineA(PKDBGMOD pMod, KI32 iSegment, KDBGADDR off, PPKDBGLINE ppLine);
+
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/lib/kStuff/include/k/kDbgAll.h b/src/lib/kStuff/include/k/kDbgAll.h
new file mode 100644
index 0000000..fde7c0f
--- /dev/null
+++ b/src/lib/kStuff/include/k/kDbgAll.h
@@ -0,0 +1,168 @@
+/* $Id: kDbgAll.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kDbg - The Debug Info Read, All Details and Dependencies Included.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kDbgAll_h___
+#define ___k_kDbgAll_h___
+
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+#include <k/kRdr.h>
+#include <k/kLdr.h>
+#include <k/kDbg.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @defgroup grp_kDbgAll   All
+ * @addtogroup grp_kDbg
+ * @{
+ */
+
+/**
+ * The debug module method table.
+ */
+typedef struct KDBGMODOPS
+{
+    /** The name of the reader. */
+    const char *pszName;
+
+    /** Pointer to the next debug module readers.
+     * This is only used for dynamically registered readers. */
+    struct KDBGMODOPS  *pNext;
+
+    /**
+     * Tries to open the module.
+     *
+     * @returns 0 on success, KDBG_ERR on failure.
+     * @param   ppMod           Where to store the module that's been opened.
+     * @param   pRdr            The file provider.
+     * @param   fCloseRdrs       Whether the reader should be closed or not when the module is destroyed.
+     * @param   off             The file offset of the debug info. This is 0 if there isn't
+     *                          any specfic debug info section and the reader should start
+     *                          looking for debug info at the start of the file.
+     * @param   cb              The size of the debug info in the file. INT64_MAX if we don't
+     *                          know or there isn't any particular debug info section in the file.
+     * @param   pLdrMod         The associated loader module. This can be NULL.
+     */
+    int (*pfnOpen)(PKDBGMOD *ppMod, PKRDR pRdr, KBOOL fCloseRdr, KFOFF off, KFOFF cb, struct KLDRMOD *pLdrMod);
+
+    /**
+     * Closes the module.
+     *
+     * This should free all resources associated with the module
+     * except the pMod which is freed by the caller.
+     *
+     * @returns IPRT status code.
+     * @param   pMod        The module.
+     */
+    int (*pfnClose)(PKDBGMOD pMod);
+
+    /**
+     * Gets a symbol by segment:offset.
+     * This will be approximated to the nearest symbol if there is no exact match.
+     *
+     * @returns 0 on success. KLDR_ERR_* on failure.
+     * @param   pMod        The module.
+     * @param   iSegment    The segment this offset is relative to.
+     *                      The -1 segment is special, it means that the addres is relative to
+     *                      the image base. The image base is where the first bit of the image
+     *                      is mapped during load.
+     * @param   off         The offset into the segment.
+     * @param   pSym        Where to store the symbol details.
+     */
+    int (*pfnQuerySymbol)(PKDBGMOD pMod, KI32 iSegment, KDBGADDR off, PKDBGSYMBOL pSym);
+
+    /**
+     * Gets a line number entry by segment:offset.
+     * This will be approximated to the nearest line number there is no exact match.
+     *
+     * @returns 0 on success. KLDR_ERR_* on failure.
+     * @param   pMod        The module.
+     * @param   iSegment    The segment this offset is relative to.
+     *                      The -1 segment is special, it means that the addres is relative to
+     *                      the image base. The image base is where the first bit of the image
+     *                      is mapped during load.
+     * @param   off         The offset into the segment.
+     * @param   pLine       Where to store the line number details.
+     */
+    int (*pfnQueryLine)(PKDBGMOD pMod, KI32 iSegment, KDBGADDR uOffset, PKDBGLINE pLine);
+
+    /** This is just to make sure you've initialized all the fields.
+     * Must be identical to pszName. */
+    const char *pszName2;
+} KDBGMODOPS;
+/** Pointer to a module method table. */
+typedef KDBGMODOPS *PKDBGMODOPS;
+/** Pointer to a const module method table. */
+typedef const KDBGMODOPS *PCKDBGMODOPS;
+
+/**
+ * Register a debug module reader with the kDbgModule component.
+ *
+ * Dynamically registered readers are kept in FIFO order, and external
+ * readers will be tried after the builtin ones.
+ *
+ * @returns 0 on success.
+ * @returns KERR_INVALID_POINTER if pOps is missing bits.
+ * @returns KERR_INVALID_PARAMETER if pOps is already in the list.
+ * @param   pOps        The reader method table, kDbg takes owner ship of
+ *                      this. This must be writeable as the pNext pointer
+ *                      will be update. It must also stick around for as
+ *                      long as kDbg is in use.
+ */
+KDBG_DECL(int) kDbgModuleRegisterReader(PKDBGMODOPS pOps);
+
+
+
+/**
+ * Internal representation of a debug module.
+ */
+typedef struct KDBGMOD
+{
+    /** Magic value (KDBGMOD_MAGIC). */
+    KI32            u32Magic;
+    /** Pointer to the method table. */
+    PCKDBGMODOPS    pOps;
+    /** The file provider for the file containing the debug info. */
+    PKRDR           pRdr;
+    /** Whether or not to close pRdr. */
+    KBOOL           fCloseRdr;
+    /** The associated kLdr module. This may be NULL. */
+    PKLDRMOD        pLdrMod;
+} KDBGMOD;
+
+/** @}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/lib/kStuff/include/k/kDbgBase.h b/src/lib/kStuff/include/k/kDbgBase.h
new file mode 100644
index 0000000..5ae31fb
--- /dev/null
+++ b/src/lib/kStuff/include/k/kDbgBase.h
@@ -0,0 +1,248 @@
+/* $Id: kDbgBase.h 40 2010-02-02 16:02:15Z bird $ */
+/** @file
+ * kDbg - The Debug Info Reader, Base Definitions and Typedefs.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___kDbgBase_h___
+#define ___kDbgBase_h___
+
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+
+
+/** @defgroup grp_kDbgBase  kDbgBase - Base Definitions And Typedefs
+ * @{ */
+
+/*
+ * kDbg depend on size_t, [u]intNN_t, [u]intptr_t and some related constants.
+ * If KDBG_ALREADY_INCLUDED_STD_TYPES or KCOMMON_ALREADY_INCLUDED_STD_TYPES
+ * is defined, these has already been defined.
+ */
+#if !defined(KDBG_ALREADY_INCLUDED_STD_TYPES) && !defined(KCOMMON_ALREADY_INCLUDED_STD_TYPES)
+# define KCOMMON_ALREADY_INCLUDED_STD_TYPES 1
+# include <sys/types.h>
+# include <stddef.h>
+# ifdef _MSC_VER
+   typedef signed char          int8_t;
+   typedef unsigned char        uint8_t;
+   typedef signed short         int16_t;
+   typedef unsigned short       uint16_t;
+   typedef signed int           int32_t;
+   typedef unsigned int         uint32_t;
+   typedef signed __int64       int64_t;
+   typedef unsigned __int64     uint64_t;
+   typedef int64_t              intmax_t;
+   typedef uint64_t             uintmax_t;
+#  define UINT8_C(c)            (c)
+#  define UINT16_C(c)           (c)
+#  define UINT32_C(c)           (c ## U)
+#  define UINT64_C(c)           (c ## ULL)
+#  define INT8_C(c)             (c)
+#  define INT16_C(c)            (c)
+#  define INT32_C(c)            (c)
+#  define INT64_C(c)            (c ## LL)
+#  define INT8_MIN              (INT8_C(-0x7f) - 1)
+#  define INT16_MIN             (INT16_C(-0x7fff) - 1)
+#  define INT32_MIN             (INT32_C(-0x7fffffff) - 1)
+#  define INT64_MIN             (INT64_C(-0x7fffffffffffffff) - 1)
+#  define INT8_MAX              INT8_C(0x7f)
+#  define INT16_MAX             INT16_C(0x7fff)
+#  define INT32_MAX             INT32_C(0x7fffffff)
+#  define INT64_MAX             INT64_C(0x7fffffffffffffff)
+#  define UINT8_MAX             UINT8_C(0xff)
+#  define UINT16_MAX            UINT16_C(0xffff)
+#  define UINT32_MAX            UINT32_C(0xffffffff)
+#  define UINT64_MAX            UINT64_C(0xffffffffffffffff)
+# else
+#  include <stdint.h>
+# endif
+#endif /* !KDBG_ALREADY_INCLUDED_STD_TYPES && !KCOMMON_ALREADY_INCLUDED_STD_TYPES */
+
+
+/** @def KDBG_CALL
+ * The calling convention used by the kDbg functions. */
+#if defined(_MSC_VER) || defined(__OS2__)
+# define KDBG_CALL  __cdecl
+#else
+# define KDBG_CALL
+#endif
+
+#ifdef DOXYGEN_RUNNING
+/** @def KDBG_BUILDING
+ * Define KDBG_BUILDING to indicate that kDbg is being built.
+ */
+# define KDBG_BUILDING
+/** @def KDBG_RESIDES_IN_DLL
+ * Define KDBG_RESIDES_IN_DLL to indicate that kDbg resides in a DLL.
+ */
+# define KDBG_RESIDES_IN_DLL
+#endif
+
+/** @def KDBG_DECL
+ * Macro for defining public functions. */
+#if defined(KDBG_RESIDES_IN_DLL) \
+ && (defined(_MSC_VER) || defined(__OS2__))
+# ifdef KDBG_BUILDING
+#  define KDBG_DECL(type) __declspec(dllexport) type
+# else
+#  define KDBG_DECL(type) __declspec(dllimport) type
+# endif
+#else
+# define KDBG_DECL(type) type
+#endif
+
+/** @def KDBG_INLINE
+ * Macro for defining an inline function. */
+#ifdef __cplusplus
+# if defined(__GNUC__)
+#  define KDBG_INLINE(type) static inline type
+# else
+#  define KDBG_INLINE(type) inline type
+# endif
+#else
+# if defined(__GNUC__)
+#  define KDBG_INLINE(type) static __inline__ type
+# elif defined(_MSC_VER)
+#  define KDBG_INLINE(type) _inline type
+# else
+#  error "Port me"
+# endif
+#endif
+
+
+/** The kDbg address type. */
+typedef uint64_t KDBGADDR;
+/** Pointer to a kLdr address. */
+typedef KDBGADDR *PKDBGADDR;
+/** Pointer to a const kLdr address. */
+typedef const KDBGADDR *PCKDBGADDR;
+
+/** NIL address. */
+#define NIL_KDBGADDR    (~(uint64_t)0)
+
+/** @def PRI_KDBGADDR
+ * printf format type. */
+#ifdef _MSC_VER
+# define PRI_KDBGADDR    "I64x"
+#else
+# define PRI_KDBGADDR    "llx"
+#endif
+
+
+/** Get the minimum of two values. */
+#define KDBG_MIN(a, b)              ((a) <= (b) ? (a) : (b))
+/** Get the maximum of two values. */
+#define KDBG_MAX(a, b)              ((a) >= (b) ? (a) : (b))
+/** Calculate the offset of a structure member. */
+#define KDBG_OFFSETOF(strct, memb)  ( (size_t)( &((strct *)0)->memb ) )
+/** Align a size_t value. */
+#define KDBG_ALIGN_Z(val, align)    ( ((val) + ((align) - 1)) & ~(size_t)((align) - 1) )
+/** Align a void * value. */
+#define KDBG_ALIGN_P(pv, align)     ( (void *)( ((uintptr_t)(pv) + ((align) - 1)) & ~(uintptr_t)((align) - 1) ) )
+/** Align a size_t value. */
+#define KDBG_ALIGN_ADDR(val, align) ( ((val) + ((align) - 1)) & ~(KDBGADDR)((align) - 1) )
+/** Number of elements in an array. */
+#define KDBG_ELEMENTS(a)            ( sizeof(a) / sizeof((a)[0]) )
+/** @def KDBG_VALID_PTR
+ * Checks if the specified pointer is a valid address or not. */
+#define KDBG_VALID_PTR(ptr)         ( (uintptr_t)(ptr) + 0x1000U >= 0x2000U )
+
+
+/** @def KDBG_LITTLE_ENDIAN
+ * The kDbg build is for a little endian target. */
+/** @def KDBG_BIG_ENDIAN
+ * The kDbg build is for a big endian target. */
+#if !defined(KDBG_LITTLE_ENDIAN) && !defined(KDBG_BIG_ENDIAN)
+# define KDBG_LITTLE_ENDIAN
+#endif
+#ifdef DOXYGEN_RUNNING
+# define KDBG_BIG_ENDIAN
+#endif
+
+
+/** @name Endian Conversion
+ * @{ */
+
+/** @def KDBG_E2E_U16
+ * Convert the endian of an unsigned 16-bit value. */
+# define KDBG_E2E_U16(u16)      ( (uint16_t) (((u16) >> 8) | ((u16) << 8)) )
+/** @def KDBG_E2E_U32
+ * Convert the endian of an unsigned 32-bit value. */
+# define KDBG_E2E_U32(u32)      (   ( ((u32) & UINT32_C(0xff000000)) >> 24 ) \
+                                  | ( ((u32) & UINT32_C(0x00ff0000)) >>  8 ) \
+                                  | ( ((u32) & UINT32_C(0x0000ff00)) <<  8 ) \
+                                  | ( ((u32) & UINT32_C(0x000000ff)) << 24 ) \
+                                )
+/** @def KDBG_E2E_U64
+ * Convert the endian of an unsigned 64-bit value. */
+# define KDBG_E2E_U64(u64)      (   ( ((u64) & UINT64_C(0xff00000000000000)) >> 56 ) \
+                                  | ( ((u64) & UINT64_C(0x00ff000000000000)) >> 40 ) \
+                                  | ( ((u64) & UINT64_C(0x0000ff0000000000)) >> 24 ) \
+                                  | ( ((u64) & UINT64_C(0x000000ff00000000)) >>  8 ) \
+                                  | ( ((u64) & UINT64_C(0x00000000ff000000)) <<  8 ) \
+                                  | ( ((u64) & UINT64_C(0x0000000000ff0000)) << 24 ) \
+                                  | ( ((u64) & UINT64_C(0x000000000000ff00)) << 40 ) \
+                                  | ( ((u64) & UINT64_C(0x00000000000000ff)) << 56 ) \
+                                )
+
+/** @def KDBG_LE2H_U16
+ * Unsigned 16-bit little-endian to host endian. */
+/** @def KDBG_LE2H_U32
+ * Unsigned 32-bit little-endian to host endian. */
+/** @def KDBG_LE2H_U64
+ * Unsigned 64-bit little-endian to host endian. */
+/** @def KDBG_BE2H_U16
+ * Unsigned 16-bit big-endian to host endian. */
+/** @def KDBG_BE2H_U32
+ * Unsigned 32-bit big-endian to host endian. */
+/** @def KDBG_BE2H_U64
+ * Unsigned 64-bit big-endian to host endian. */
+#ifdef KDBG_LITTLE_ENDIAN
+# define KDBG_LE2H_U16(u16)  ((uint16_t)(u16))
+# define KDBG_LE2H_U32(u32)  ((uint32_t)(u32))
+# define KDBG_LE2H_U64(u64)  ((uint32_t)(u32))
+# define KDBG_BE2H_U16(u16)  KDBG_E2E_U16(u16)
+# define KDBG_BE2H_U32(u32)  KDBG_E2E_U32(u32)
+# define KDBG_BE2H_U64(u64)  KDBG_E2E_U64(u64)
+#elif defined(KDBG_BIG_ENDIAN)
+# define KDBG_LE2H_U16(u16)  KDBG_E2E_U16(u16)
+# define KDBG_LE2H_U32(u32)  KDBG_E2E_U32(u32)
+# define KDBG_LE2H_U32(u64)  KDBG_E2E_U64(u64)
+# define KDBG_BE2H_U16(u16)  ((uint16_t)(u16))
+# define KDBG_BE2H_U32(u32)  ((uint32_t)(u32))
+# define KDBG_BE2H_U64(u64)  ((uint32_t)(u32))
+#else
+# error "KDBG_BIG_ENDIAN or KDBG_LITTLE_ENDIAN is supposed to be defined."
+#endif
+
+/** @} */
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kDefs.h b/src/lib/kStuff/include/k/kDefs.h
new file mode 100644
index 0000000..ffa1cf2
--- /dev/null
+++ b/src/lib/kStuff/include/k/kDefs.h
@@ -0,0 +1,596 @@
+/* $Id: kDefs.h 120 2022-02-18 02:00:53Z bird $ */
+/** @file
+ * kTypes - Defines and Macros.
+ */
+
+/*
+ * Copyright (c) 2006-2017 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kDefs_h___
+#define ___k_kDefs_h___
+
+/** @defgroup grp_kDefs  kDefs - Defines and Macros
+ * @{ */
+
+/** @name Operative System Identifiers.
+ * These are the value that the K_OS \#define can take.
+ * @{
+ */
+/** Unknown OS. */
+#define K_OS_UNKNOWN    0
+/** Darwin - aka Mac OS X. */
+#define K_OS_DARWIN     1
+/** DragonFly BSD. */
+#define K_OS_DRAGONFLY  2
+/** FreeBSD. */
+#define K_OS_FREEBSD    3
+/** GNU/Hurd. */
+#define K_OS_GNU_HURD   4
+/** GNU/kFreeBSD. */
+#define K_OS_GNU_KFBSD  5
+/** GNU/kNetBSD or GNU/NetBSD or whatever the decide to call it. */
+#define K_OS_GNU_KNBSD  6
+/** Haiku. */
+#define K_OS_HAIKU      7
+/** Linux. */
+#define K_OS_LINUX      8
+/** NetBSD. */
+#define K_OS_NETBSD     9
+/** NT (native). */
+#define K_OS_NT         10
+/** OpenBSD*/
+#define K_OS_OPENBSD    11
+/** OS/2 */
+#define K_OS_OS2        12
+/** Solaris */
+#define K_OS_SOLARIS    13
+/** Windows. */
+#define K_OS_WINDOWS    14
+/** The max K_OS_* value (exclusive). */
+#define K_OS_MAX        15
+/** @} */
+
+/** @def K_OS
+ * Indicates which OS we're targetting. It's a \#define with is
+ * assigned one of the K_OS_* defines above.
+ *
+ * So to test if we're on FreeBSD do the following:
+ * @code
+ *  #if K_OS == K_OS_FREEBSD
+ *  some_funky_freebsd_specific_stuff();
+ *  #endif
+ * @endcode
+ */
+#ifndef K_OS
+# if defined(__APPLE__)
+#  define K_OS      K_OS_DARWIN
+# elif defined(__DragonFly__)
+#  define K_OS      K_OS_DRAGONFLY
+# elif defined(__FreeBSD__)
+#  define K_OS      K_OS_FREEBSD
+# elif defined(__FreeBSD_kernel__)
+#  define K_OS      K_OS_GNU_KFBSD
+# elif defined(__gnu_hurd__)
+#  define K_OS      K_OS_GNU_HURD
+# elif defined(__gnu_linux__)
+#  define K_OS      K_OS_LINUX
+# elif defined(__NetBSD__) /*??*/
+#  define K_OS      K_OS_NETBSD
+# elif defined(__NetBSD_kernel__)
+#  define K_OS      K_OS_GNU_KNBSD
+# elif defined(__OpenBSD__) /*??*/
+#  define K_OS      K_OS_OPENBSD
+# elif defined(__OS2__)
+#  define K_OS      K_OS_OS2
+# elif defined(__sun__) || defined(__SunOS__) || defined(__sun) || defined(__SunOS)
+#  define K_OS      K_OS_SOLARIS
+# elif defined(_WIN32) || defined(_WIN64)
+#  define K_OS      K_OS_WINDOWS
+# elif defined(__haiku__) || defined(__HAIKU__)
+#  define K_OS      K_OS_HAIKU
+# else
+#  error "Port Me"
+# endif
+#endif
+#if K_OS < K_OS_UNKNOWN || K_OS >= K_OS_MAX
+# error "Invalid K_OS value."
+#endif
+
+
+
+/** @name   Architecture bit width.
+ * @{ */
+#define K_ARCH_BIT_8            0x0100  /**< 8-bit */
+#define K_ARCH_BIT_16           0x0200  /**< 16-bit */
+#define K_ARCH_BIT_32           0x0400  /**< 32-bit */
+#define K_ARCH_BIT_64           0x0800  /**< 64-bit */
+#define K_ARCH_BIT_128          0x1000  /**< 128-bit */
+#define K_ARCH_BIT_MASK         0x1f00  /**< The bit mask. */
+#define K_ARCH_BIT_SHIFT        5       /**< Shift count for producing the width in bits. */
+#define K_ARCH_BYTE_SHIFT       8       /**< Shift count for producing the width in bytes. */
+/** @} */
+
+/** @name   Architecture Endianness.
+ * @{ */
+#define K_ARCH_END_LITTLE       0x2000  /**< Little-endian. */
+#define K_ARCH_END_BIG          0x4000  /**< Big-endian. */
+#define K_ARCH_END_BI           0x6000  /**< Bi-endian, can be switched. */
+#define K_ARCH_END_MASK         0x6000  /**< The endian mask. */
+#define K_ARCH_END_SHIFT        13      /**< Shift count for converting between this K_ENDIAN_*. */
+/** @} */
+
+/** @name Architecture Identifiers.
+ * These are the value that the K_ARCH \#define can take.
+ *@{ */
+/** Unknown CPU architecture. */
+#define K_ARCH_UNKNOWN          ( 0 )
+/** Clone or Intel 16-bit x86. */
+#define K_ARCH_X86_16           ( 1 | K_ARCH_BIT_16 | K_ARCH_END_LITTLE)
+/** Clone or Intel 32-bit x86. */
+#define K_ARCH_X86_32           ( 1 | K_ARCH_BIT_32 | K_ARCH_END_LITTLE)
+/** AMD64 (including clones). */
+#define K_ARCH_AMD64            ( 2 | K_ARCH_BIT_64 | K_ARCH_END_LITTLE)
+/** Itanic (64-bit). */
+#define K_ARCH_IA64             ( 3 | K_ARCH_BIT_64 | K_ARCH_END_BI)
+/** ALPHA (64-bit). */
+#define K_ARCH_ALPHA            ( 4 | K_ARCH_BIT_64 | K_ARCH_END_BI)
+/** ALPHA limited to 32-bit. */
+#define K_ARCH_ALPHA_32         ( 4 | K_ARCH_BIT_32 | K_ARCH_END_BI)
+/** 32-bit ARM. */
+#define K_ARCH_ARM_32           ( 5 | K_ARCH_BIT_32 | K_ARCH_END_BI)
+/** 64-bit ARM. */
+#define K_ARCH_ARM_64           ( 5 | K_ARCH_BIT_64 | K_ARCH_END_BI)
+/** Motorola 68000 (32-bit). */
+#define K_ARCH_M68K             ( 6 | K_ARCH_BIT_32 | K_ARCH_END_BIG)
+/** 32-bit MIPS. */
+#define K_ARCH_MIPS_32          ( 7 | K_ARCH_BIT_32 | K_ARCH_END_BI)
+/** 64-bit MIPS. */
+#define K_ARCH_MIPS_64          ( 7 | K_ARCH_BIT_64 | K_ARCH_END_BI)
+/** 32-bit PA-RISC. */
+#define K_ARCH_PARISC_32        ( 8 | K_ARCH_BIT_32 | K_ARCH_END_BI)
+/** 64-bit PA-RISC. */
+#define K_ARCH_PARISC_64        ( 8 | K_ARCH_BIT_64 | K_ARCH_END_BI)
+/** 32-bit PowerPC. */
+#define K_ARCH_POWERPC_32       ( 9 | K_ARCH_BIT_32 | K_ARCH_END_BI)
+/** 64-bit PowerPC. */
+#define K_ARCH_POWERPC_64       ( 9 | K_ARCH_BIT_64 | K_ARCH_END_BI)
+/** 32(31)-bit S390. */
+#define K_ARCH_S390_32          (10 | K_ARCH_BIT_32 | K_ARCH_END_BIG)
+/** 64-bit S390. */
+#define K_ARCH_S390_64          (10 | K_ARCH_BIT_64 | K_ARCH_END_BIG)
+/** 32-bit SuperH. */
+#define K_ARCH_SH_32            (11 | K_ARCH_BIT_32 | K_ARCH_END_BI)
+/** 64-bit SuperH. */
+#define K_ARCH_SH_64            (11 | K_ARCH_BIT_64 | K_ARCH_END_BI)
+/** 32-bit SPARC. */
+#define K_ARCH_SPARC_32         (12 | K_ARCH_BIT_32 | K_ARCH_END_BIG)
+/** 64-bit SPARC. */
+#define K_ARCH_SPARC_64         (12 | K_ARCH_BIT_64 | K_ARCH_END_BI)
+/** 32-bit RISC-V, little endian. */
+#define K_ARCH_RISCV_32         (13 | K_ARCH_BIT_32 | K_ARCH_END_LITTLE)
+/** 32-bit RISC-V, big endian. */
+#define K_ARCH_RISCV_32_BE      (13 | K_ARCH_BIT_32 | K_ARCH_END_BIG)
+/** 64-bit RISC-V, little endian. */
+#define K_ARCH_RISCV_64         (13 | K_ARCH_BIT_64 | K_ARCH_END_LITTLE)
+/** 64-bit RISC-V, big endian. */
+#define K_ARCH_RISCV_64_BE      (13 | K_ARCH_BIT_64 | K_ARCH_END_BIG)
+/** The end of the valid architecture values (exclusive). */
+#define K_ARCH_MAX              (12+1)
+/** @} */
+
+
+/** @def K_ARCH
+ * The value of this \#define indicates which architecture we're targetting.
+ */
+#ifndef K_ARCH
+  /* detection based on compiler defines. */
+# if defined(__amd64__) || defined(__x86_64__) || defined(__AMD64__) || defined(_M_X64) || defined(__amd64)
+#  define K_ARCH    K_ARCH_AMD64
+# elif defined(__i386__) || defined(__x86__) || defined(__X86__) || defined(_M_IX86) || defined(__i386)
+#  define K_ARCH    K_ARCH_X86_32
+# elif defined(__ia64__) || defined(__IA64__) || defined(_M_IA64)
+#  define K_ARCH    K_ARCH_IA64
+# elif defined(__alpha__)
+#  define K_ARCH    K_ARCH_ALPHA
+# elif defined(__arm__) || defined(__arm32__)
+#  define K_ARCH    K_ARCH_ARM_32
+# elif defined(__aarch64__) || defined(__arm64__)
+#  define K_ARCH    K_ARCH_ARM_64
+# elif defined(__hppa__) && defined(__LP64__)
+#  define K_ARCH    K_ARCH_PARISC_64
+# elif defined(__hppa__)
+#  define K_ARCH    K_ARCH_PARISC_32
+# elif defined(__m68k__)
+#  define K_ARCH    K_ARCH_M68K
+# elif defined(__mips64)
+#  define K_ARCH    K_ARCH_MIPS_64
+# elif defined(__mips__)
+#  define K_ARCH    K_ARCH_MIPS_32
+# elif defined(__powerpc64__) || defined(__ppc64__) || defined(__PPC64__)
+#  define K_ARCH    K_ARCH_POWERPC_64
+# elif defined(__powerpc__) || defined(__ppc__) || defined(__PPC__)
+#  define K_ARCH    K_ARCH_POWERPC_32
+# elif defined(__riscv)
+#  if __BYTE_ORDER__ == WORDS_BIG_ENDIAN
+#   if defined(__riscv32) || __riscv_xlen+0 == 32
+#    define K_ARCH  K_ARCH_RISCV_32_BE
+#   else
+#    define K_ARCH  K_ARCH_RISCV_64_BE
+#   endif
+#  elif defined(__riscv32) || __riscv_xlen+0 == 32
+#   define K_ARCH   K_ARCH_RISCV_32
+#  else
+#   define K_ARCH   K_ARCH_RISCV_64
+#  endif
+# elif defined(__sparcv9__) || defined(__sparcv9)
+#  define K_ARCH    K_ARCH_SPARC_64
+# elif defined(__sparc__) || defined(__sparc)
+#  define K_ARCH    K_ARCH_SPARC_32
+# elif defined(__s390x__)
+#  define K_ARCH    K_ARCH_S390_64
+# elif defined(__s390__)
+#  define K_ARCH    K_ARCH_S390_32
+# elif defined(__sh__)
+#  if !defined(__SH5__)
+#   define K_ARCH   K_ARCH_SH_32
+#  else
+#   if __SH5__ == 64
+#    define K_ARCH  K_ARCH_SH_64
+#   else
+#    define K_ARCH  K_ARCH_SH_32
+#   endif
+#  endif
+# else
+#  error "Port Me"
+# endif
+#else
+  /* validate the user specified value. */
+# if (K_ARCH & K_ARCH_BIT_MASK) != K_ARCH_BIT_8 \
+  && (K_ARCH & K_ARCH_BIT_MASK) != K_ARCH_BIT_16 \
+  && (K_ARCH & K_ARCH_BIT_MASK) != K_ARCH_BIT_32 \
+  && (K_ARCH & K_ARCH_BIT_MASK) != K_ARCH_BIT_64 \
+  && (K_ARCH & K_ARCH_BIT_MASK) != K_ARCH_BIT_128
+#  error "Invalid K_ARCH value (bit)"
+# endif
+# if (K_ARCH & K_ARCH_END_MASK) != K_ARCH_END_LITTLE \
+  && (K_ARCH & K_ARCH_END_MASK) != K_ARCH_END_BIG \
+  && (K_ARCH & K_ARCH_END_MASK) != K_ARCH_END_BI
+#  error "Invalid K_ARCH value (endian)"
+# endif
+# if (K_ARCH & ~(K_ARCH_BIT_MASK | K_ARCH_BIT_END_MASK)) < K_ARCH_UNKNOWN \
+  || (K_ARCH & ~(K_ARCH_BIT_MASK | K_ARCH_BIT_END_MASK)) >= K_ARCH_MAX
+#  error "Invalid K_ARCH value"
+# endif
+#endif
+
+/** @def K_ARCH_IS_VALID
+ * Check if the architecture identifier is valid.
+ * @param   arch            The K_ARCH_* define to examin.
+ */
+#define K_ARCH_IS_VALID(arch)   (   (   ((arch) & K_ARCH_BIT_MASK) == K_ARCH_BIT_8 \
+                                     || ((arch) & K_ARCH_BIT_MASK) == K_ARCH_BIT_16 \
+                                     || ((arch) & K_ARCH_BIT_MASK) == K_ARCH_BIT_32 \
+                                     || ((arch) & K_ARCH_BIT_MASK) == K_ARCH_BIT_64 \
+                                     || ((arch) & K_ARCH_BIT_MASK) == K_ARCH_BIT_128) \
+                                 && \
+                                    (   ((arch) & K_ARCH_END_MASK) == K_ARCH_END_LITTLE \
+                                     || ((arch) & K_ARCH_END_MASK) == K_ARCH_END_BIG \
+                                     || ((arch) & K_ARCH_END_MASK) == K_ARCH_END_BI) \
+                                 && \
+                                    (   ((arch) & ~(K_ARCH_BIT_MASK | K_ARCH_END_MASK)) >= K_ARCH_UNKNOWN \
+                                     && ((arch) & ~(K_ARCH_BIT_MASK | K_ARCH_END_MASK)) < K_ARCH_MAX) \
+                                )
+
+/** @def K_ARCH_BITS_EX
+ * Determin the architure byte width of the specified architecture.
+ * @param   arch            The K_ARCH_* define to examin.
+ */
+#define K_ARCH_BITS_EX(arch)    ( ((arch) & K_ARCH_BIT_MASK) >> K_ARCH_BIT_SHIFT )
+
+/** @def K_ARCH_BYTES_EX
+ * Determin the architure byte width of the specified architecture.
+ * @param   arch            The K_ARCH_* define to examin.
+ */
+#define K_ARCH_BYTES_EX(arch)   ( ((arch) & K_ARCH_BIT_MASK) >> K_ARCH_BYTE_SHIFT )
+
+/** @def K_ARCH_ENDIAN_EX
+ * Determin the K_ENDIAN value for the specified architecture.
+ * @param   arch            The K_ARCH_* define to examin.
+ */
+#define K_ARCH_ENDIAN_EX(arch)  ( ((arch) & K_ARCH_END_MASK) >> K_ARCH_END_SHIFT )
+
+/** @def K_ARCH_BITS
+ * Determin the target architure bit width.
+ */
+#define K_ARCH_BITS             K_ARCH_BITS_EX(K_ARCH)
+
+/** @def K_ARCH_BYTES
+ * Determin the target architure byte width.
+ */
+#define K_ARCH_BYTES            K_ARCH_BYTES_EX(K_ARCH)
+
+/** @def K_ARCH_ENDIAN
+ * Determin the target K_ENDIAN value.
+ */
+#define K_ARCH_ENDIAN           K_ARCH_ENDIAN_EX(K_ARCH)
+
+
+
+/** @name Endianness Identifiers.
+ * These are the value that the K_ENDIAN \#define can take.
+ * @{ */
+#define K_ENDIAN_LITTLE         1       /**< Little-endian. */
+#define K_ENDIAN_BIG            2       /**< Big-endian. */
+#define K_ENDIAN_BI             3       /**< Bi-endian, can be switched. Only used with K_ARCH. */
+/** @} */
+
+/** @def K_ENDIAN
+ * The value of this \#define indicates the target endianness.
+ *
+ * @remark  It's necessary to define this (or add the necessary deduction here)
+ *          on bi-endian architectures.
+ */
+#ifndef K_ENDIAN
+  /* use K_ARCH if possible. */
+# if K_ARCH_ENDIAN != K_ENDIAN_BI
+#  define K_ENDIAN K_ARCH_ENDIAN
+# elif defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && defined(__ORDER_BIG_ENDIAN__)
+#  if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#  define K_ENDIAN K_ENDIAN_LITTLE
+#  elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#  define K_ENDIAN K_ENDIAN_BIG
+#  else
+#   error "Port Me or define K_ENDIAN."
+#  endif
+# else
+#  error "Port Me or define K_ENDIAN."
+# endif
+#else
+  /* validate the user defined value. */
+# if K_ENDIAN != K_ENDIAN_LITTLE \
+  && K_ENDIAN != K_ENDIAN_BIG
+#  error "K_ENDIAN must either be defined as K_ENDIAN_LITTLE or as K_ENDIAN_BIG."
+# endif
+#endif
+
+/** @name Endian Conversion
+ * @{ */
+
+/** @def K_E2E_U16
+ * Convert the endian of an unsigned 16-bit value. */
+# define K_E2E_U16(u16)         ( (KU16) (((u16) >> 8) | ((u16) << 8)) )
+/** @def K_E2E_U32
+ * Convert the endian of an unsigned 32-bit value. */
+# define K_E2E_U32(u32)         (   ( ((u32) & KU32_C(0xff000000)) >> 24 ) \
+                                  | ( ((u32) & KU32_C(0x00ff0000)) >>  8 ) \
+                                  | ( ((u32) & KU32_C(0x0000ff00)) <<  8 ) \
+                                  | ( ((u32) & KU32_C(0x000000ff)) << 24 ) \
+                                )
+/** @def K_E2E_U64
+ * Convert the endian of an unsigned 64-bit value. */
+# define K_E2E_U64(u64)         (   ( ((u64) & KU64_C(0xff00000000000000)) >> 56 ) \
+                                  | ( ((u64) & KU64_C(0x00ff000000000000)) >> 40 ) \
+                                  | ( ((u64) & KU64_C(0x0000ff0000000000)) >> 24 ) \
+                                  | ( ((u64) & KU64_C(0x000000ff00000000)) >>  8 ) \
+                                  | ( ((u64) & KU64_C(0x00000000ff000000)) <<  8 ) \
+                                  | ( ((u64) & KU64_C(0x0000000000ff0000)) << 24 ) \
+                                  | ( ((u64) & KU64_C(0x000000000000ff00)) << 40 ) \
+                                  | ( ((u64) & KU64_C(0x00000000000000ff)) << 56 ) \
+                                )
+
+/** @def K_LE2H_U16
+ * Unsigned 16-bit little-endian to host endian. */
+/** @def K_LE2H_U32
+ * Unsigned 32-bit little-endian to host endian. */
+/** @def K_LE2H_U64
+ * Unsigned 64-bit little-endian to host endian. */
+/** @def K_BE2H_U16
+ * Unsigned 16-bit big-endian to host endian. */
+/** @def K_BE2H_U32
+ * Unsigned 32-bit big-endian to host endian. */
+/** @def K_BE2H_U64
+ * Unsigned 64-bit big-endian to host endian. */
+#if K_ENDIAN == K_ENDIAN_LITTLE
+# define K_LE2H_U16(u16)        ((KU16)(u16))
+# define K_LE2H_U32(u32)        ((KU32)(u32))
+# define K_LE2H_U64(u64)        ((KU64)(u32))
+# define K_BE2H_U16(u16)        K_E2E_U16(u16)
+# define K_BE2H_U32(u32)        K_E2E_U32(u32)
+# define K_BE2H_U64(u64)        K_E2E_U64(u64)
+#else
+# define K_LE2H_U16(u16)        K_E2E_U16(u16)
+# define K_LE2H_U32(u32)        K_E2E_U32(u32)
+# define K_LE2H_U64(u64)        K_E2E_U64(u64)
+# define K_BE2H_U16(u16)        ((KU16)(u16))
+# define K_BE2H_U32(u32)        ((KU32)(u32))
+# define K_BE2H_U64(u64)        ((KU64)(u32))
+#endif
+
+
+
+/** @def K_INLINE
+ * How to say 'inline' in both C and C++ dialects.
+ * @param   type        The return type.
+ */
+#ifdef __cplusplus
+# if defined(__GNUC__)
+#  define K_INLINE              static inline
+# else
+#  define K_INLINE              inline
+# endif
+#else
+# if defined(__GNUC__)
+#  define K_INLINE              static __inline__
+# elif defined(_MSC_VER)
+#  define K_INLINE              static __inline
+# else
+#  error "Port Me"
+# endif
+#endif
+
+/** @def K_EXPORT
+ * What to put in front of an exported function.
+ */
+#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS
+# define K_EXPORT               __declspec(dllexport)
+#else
+# define K_EXPORT
+#endif
+
+/** @def K_IMPORT
+ * What to put in front of an imported function.
+ */
+#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS
+# define K_IMPORT               __declspec(dllimport)
+#else
+# define K_IMPORT               extern
+#endif
+
+/** @def K_DECL_EXPORT
+ * Declare an exported function.
+ * @param type      The return type.
+ */
+#define K_DECL_EXPORT(type)     K_EXPORT type
+
+/** @def K_DECL_IMPORT
+ * Declare an import function.
+ * @param type      The return type.
+ */
+#define K_DECL_IMPORT(type)     K_IMPORT type
+
+/** @def K_DECL_INLINE
+ * Declare an inline function.
+ * @param type      The return type.
+ * @remark  Don't use on (class) methods.
+ */
+#define K_DECL_INLINE(type)     K_INLINE type
+
+
+/** Get the minimum of two values. */
+#define K_MIN(a, b)             ( (a) <= (b) ? (a) : (b) )
+/** Get the maximum of two values. */
+#define K_MAX(a, b)             ( (a) >= (b) ? (a) : (b) )
+/** Calculate the offset of a structure member. */
+#define K_OFFSETOF(strct, memb) ( (KSIZE)( &((strct *)0)->memb ) )
+/** Align a size_t value. */
+#define K_ALIGN_Z(val, align)   ( ((val) + ((align) - 1)) & ~(KSIZE)((align) - 1) )
+/** Align a void * value. */
+#define K_ALIGN_P(pv, align)    ( (void *)( ((KUPTR)(pv) + ((align) - 1)) & ~(KUPTR)((align) - 1) ) )
+/** Number of elements in an array. */
+#define K_ELEMENTS(a)           ( sizeof(a) / sizeof((a)[0]) )
+/** Checks if the specified pointer is a valid address or not. */
+#define K_VALID_PTR(ptr)        ( (KUPTR)(ptr) + 0x1000U >= 0x2000U )
+/** Makes a 32-bit bit mask. */
+#define K_BIT32(bit)            ( KU32_C(1) << (bit))
+/** Makes a 64-bit bit mask. */
+#define K_BIT64(bit)            ( KU64_C(1) << (bit))
+/** Shuts up unused parameter and unused variable warnings. */
+#define K_NOREF(var)            ( (void)(var) )
+
+
+/** @name Parameter validation macros
+ * @{ */
+
+/** Return/Crash validation of a string argument. */
+#define K_VALIDATE_STRING(str) \
+    do { \
+        if (!K_VALID_PTR(str)) \
+            return KERR_INVALID_POINTER; \
+        kHlpStrLen(str); \
+    } while (0)
+
+/** Return/Crash validation of an optional string argument. */
+#define K_VALIDATE_OPTIONAL_STRING(str) \
+    do { \
+        if (str) \
+            K_VALIDATE_STRING(str); \
+    } while (0)
+
+/** Return/Crash validation of an output buffer. */
+#define K_VALIDATE_BUFFER(buf, cb) \
+    do { \
+        if (!K_VALID_PTR(buf)) \
+            return KERR_INVALID_POINTER; \
+        if ((cb) != 0) \
+        { \
+            KU8             __b; \
+            KU8 volatile   *__pb = (KU8 volatile *)(buf); \
+            KSIZE           __cbPage1 = 0x1000 - ((KUPTR)(__pb) & 0xfff); /* ASSUMES page size! */ \
+            __b = *__pb; *__pb = 0xff; *__pb = __b; \
+            if ((cb) > __cbPage1) \
+            { \
+                KSIZE __cb = (cb) - __cbPage1; \
+                __pb -= __cbPage1; \
+                for (;;) \
+                { \
+                    __b = *__pb; *__pb = 0xff; *__pb = __b; \
+                    if (__cb < 0x1000) \
+                        break; \
+                    __pb += 0x1000; \
+                    __cb -= 0x1000; \
+                } \
+            } \
+        } \
+        else \
+            return KERR_INVALID_PARAMETER; \
+    } while (0)
+
+/** Return/Crash validation of an optional output buffer. */
+#define K_VALIDATE_OPTIONAL_BUFFER(buf, cb) \
+    do { \
+        if ((buf) && (cb) != 0) \
+            K_VALIDATE_BUFFER(buf, cb); \
+    } while (0)
+
+/** Return validation of an enum argument. */
+#define K_VALIDATE_ENUM(arg, enumname) \
+    do { \
+        if ((arg) <= enumname##_INVALID || (arg) >= enumname##_END) \
+            return KERR_INVALID_PARAMETER; \
+    } while (0)
+
+/** Return validation of a flags argument. */
+#define K_VALIDATE_FLAGS(arg, AllowedMask) \
+    do { \
+        if ((arg) & ~(AllowedMask)) \
+            return KERR_INVALID_PARAMETER; \
+    } while (0)
+
+/** @} */
+
+/** @def NULL
+ * The nil pointer value. */
+#ifndef NULL
+# ifdef __cplusplus
+#  define NULL          0
+# else
+#  define NULL          ((void *)0)
+# endif
+#endif
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kErr.h b/src/lib/kStuff/include/k/kErr.h
new file mode 100644
index 0000000..f183ef4
--- /dev/null
+++ b/src/lib/kStuff/include/k/kErr.h
@@ -0,0 +1,68 @@
+/* $Id: kErr.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kErr - Status Code API.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kErr_h___
+#define ___k_kErr_h___
+
+/** @defgroup   grp_kErr        kErr - Status Code API
+ * @{
+ */
+
+/** @def KERR_DECL
+ * Declares a kRdr function according to build context.
+ * @param type          The return type.
+ */
+#if defined(KERR_BUILDING_DYNAMIC)
+# define KERR_DECL(type)    K_DECL_EXPORT(type)
+#elif defined(KRDR_BUILT_DYNAMIC)
+# define KERR_DECL(type)    K_DECL_IMPORT(type)
+#else
+# define KERR_DECL(type)    type
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+KERR_DECL(const char *) kErrName(int rc);
+KERR_DECL(int)  kErrFromErrno(int);
+KERR_DECL(int)  kErrFromOS2(unsigned long rcOs2);
+KERR_DECL(int)  kErrFromNtStatus(long rcNtStatus);
+KERR_DECL(int)  kErrFromMach(int rcMach);
+KERR_DECL(int)  kErrFromDarwin(int rcDarwin);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kErrors.h b/src/lib/kStuff/include/k/kErrors.h
new file mode 100644
index 0000000..be179ce
--- /dev/null
+++ b/src/lib/kStuff/include/k/kErrors.h
@@ -0,0 +1,327 @@
+/* $Id: kErrors.h 58 2013-10-12 20:18:21Z bird $ */
+/** @file
+ * kErrors - Status Codes.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kErrors_h___
+#define ___k_kErrors_h___
+
+/** @defgroup grp_kErrors   Status Codes.
+ * @{
+ */
+/** The base of the kErrors status codes. */
+#define KERR_BASE                                       42000
+
+/** @name General
+ * @{
+ */
+/** The base of the general status codes. */
+#define KERR_GENERAL_BASE                               (KERR_BASE)
+/** Generic error. */
+#define KERR_GENERAL_FAILURE                            (KERR_GENERAL_BASE + 1)
+/** Out of memory. */
+#define KERR_NO_MEMORY                                  (KERR_GENERAL_BASE + 2)
+/** Hit some unimplemented functionality - feel free to implement it :-) . */
+#define KERR_NOT_IMPLEMENTED                            (KERR_GENERAL_BASE + 3)
+/** An environment variable wasn't found. */
+#define KERR_ENVVAR_NOT_FOUND                           (KERR_GENERAL_BASE + 4)
+/** Buffer overflow. */
+#define KERR_BUFFER_OVERFLOW                            (KERR_GENERAL_BASE + 5)
+/** @}*/
+
+/** @name Input Validation
+ * @{
+ */
+/** The base of the input validation status codes. */
+#define KERR_INPUT_BASE                                 (KERR_GENERAL_BASE + 6)
+/** An API was given an invalid parameter. */
+#define KERR_INVALID_PARAMETER                          (KERR_INPUT_BASE + 0)
+/** A pointer argument is not valid. */
+#define KERR_INVALID_POINTER                            (KERR_INPUT_BASE + 1)
+/** A handle argument is not valid. */
+#define KERR_INVALID_HANDLE                             (KERR_INPUT_BASE + 2)
+/** An offset argument is not valid. */
+#define KERR_INVALID_OFFSET                             (KERR_INPUT_BASE + 3)
+/** A size argument is not valid. */
+#define KERR_INVALID_SIZE                               (KERR_INPUT_BASE + 4)
+/** A range argument is not valid. */
+#define KERR_INVALID_RANGE                              (KERR_INPUT_BASE + 5)
+/** A parameter is out of range. */
+#define KERR_OUT_OF_RANGE                               (KERR_INPUT_BASE + 6)
+/** @} */
+
+/** @name File System and I/O
+ * @{
+ */
+/** The base of the file system and I/O status cdoes. */
+#define KERR_FILE_SYSTEM_AND_IO_BASE                    (KERR_INPUT_BASE + 7)
+/** The specified file was not found. */
+#define KERR_FILE_NOT_FOUND                             (KERR_FILE_SYSTEM_AND_IO_BASE + 0)
+/** End of file. */
+#define KERR_EOF                                        (KERR_FILE_SYSTEM_AND_IO_BASE + 1)
+/** @} */
+
+/** @name   kDbg Specific
+ * @{
+ */
+/** The base of the kDbg specific status codes. */
+#define KDBG_ERR_BASE                                   (KERR_FILE_SYSTEM_AND_IO_BASE + 2)
+/** The (module) format isn't known to use. */
+#define KDBG_ERR_UNKOWN_FORMAT                          (KDBG_ERR_BASE + 0)
+/** The (module) format isn't supported by this kDbg build. */
+#define KDBG_ERR_FORMAT_NOT_SUPPORTED                   (KDBG_ERR_BASE + 1)
+/** The (module) format isn't supported by this kDbg build. */
+#define KDBG_ERR_BAD_EXE_FORMAT                         (KDBG_ERR_BASE + 2)
+/** A specified address or an address found in the debug info is invalid. */
+#define KDBG_ERR_INVALID_ADDRESS                        (KDBG_ERR_BASE + 3)
+/** The dbghelp.dll is too old or something like that. */
+#define KDBG_ERR_DBGHLP_VERSION_MISMATCH                (KDBG_ERR_BASE + 4)
+/** @} */
+
+/** @name   kRdr Specific
+ * @{
+ */
+/** the base of the kRdr specific status codes. */
+#define KRDR_ERR_BASE                                   (KDBG_ERR_BASE + 5)
+/** The file reader can't take more concurrent mappings. */
+#define KRDR_ERR_TOO_MANY_MAPPINGS                      (KRDR_ERR_BASE + 0)
+/** The pRdr instance passed to a kRdrBuf* API isn't a buffered instance. */
+#define KRDR_ERR_NOT_BUFFERED_RDR                       (KRDR_ERR_BASE + 1)
+/** The line is too long to fit in the buffer passed to kRdrBufLine or kRdrBufLineEx. */
+#define KRDR_ERR_LINE_TOO_LONG                          (KRDR_ERR_BASE + 2)
+/** @} */
+
+/** @name   kLdr Specific
+ * @{
+ */
+/** The base of the kLdr specific status codes. */
+#define KLDR_ERR_BASE                                   (KRDR_ERR_BASE + 3)
+
+/** The image format is unknown. */
+#define KLDR_ERR_UNKNOWN_FORMAT                         (KLDR_ERR_BASE + 0)
+/** The MZ image format isn't supported by this kLdr build. */
+#define KLDR_ERR_MZ_NOT_SUPPORTED                       (KLDR_ERR_BASE + 1)
+/** The NE image format isn't supported by this kLdr build. */
+#define KLDR_ERR_NE_NOT_SUPPORTED                       (KLDR_ERR_BASE + 2)
+/** The LX image format isn't supported by this kLdr build. */
+#define KLDR_ERR_LX_NOT_SUPPORTED                       (KLDR_ERR_BASE + 3)
+/** The LE image format isn't supported by this kLdr build. */
+#define KLDR_ERR_LE_NOT_SUPPORTED                       (KLDR_ERR_BASE + 4)
+/** The PE image format isn't supported by this kLdr build. */
+#define KLDR_ERR_PE_NOT_SUPPORTED                       (KLDR_ERR_BASE + 5)
+/** The ELF image format isn't supported by this kLdr build. */
+#define KLDR_ERR_ELF_NOT_SUPPORTED                      (KLDR_ERR_BASE + 6)
+/** The mach-o image format isn't supported by this kLdr build. */
+#define KLDR_ERR_MACHO_NOT_SUPPORTED                    (KLDR_ERR_BASE + 7)
+/** The FAT image format isn't supported by this kLdr build or
+ * a direct open was attempt without going thru the FAT file provider.
+ * FAT images are also known as Universal Binaries. */
+#define KLDR_ERR_FAT_NOT_SUPPORTED                      (KLDR_ERR_BASE + 8)
+/** The a.out image format isn't supported by this kLdr build. */
+#define KLDR_ERR_AOUT_NOT_SUPPORTED                     (KLDR_ERR_BASE + 9)
+
+/** The module wasn't loaded dynamically. */
+#define KLDR_ERR_NOT_LOADED_DYNAMICALLY                 (KLDR_ERR_BASE + 10)
+/** The module wasn't found. */
+#define KLDR_ERR_MODULE_NOT_FOUND                       (KLDR_ERR_BASE + 11)
+/** A prerequisit module wasn't found. */
+#define KLDR_ERR_PREREQUISITE_MODULE_NOT_FOUND          (KLDR_ERR_BASE + 12)
+/** The module is being terminated and can therefore not be loaded. */
+#define KLDR_ERR_MODULE_TERMINATING                     (KLDR_ERR_BASE + 13)
+/** A prerequisit module is being terminated and can therefore not be loaded. */
+#define KLDR_ERR_PREREQUISITE_MODULE_TERMINATING        (KLDR_ERR_BASE + 14)
+/** The module initialization failed. */
+#define KLDR_ERR_MODULE_INIT_FAILED                     (KLDR_ERR_BASE + 15)
+/** The initialization of a prerequisite module failed. */
+#define KLDR_ERR_PREREQUISITE_MODULE_INIT_FAILED        (KLDR_ERR_BASE + 16)
+/** The module has already failed initialization and can't be attempted reloaded until
+ * after we've finished garbage collection. */
+#define KLDR_ERR_MODULE_INIT_FAILED_ALREADY             (KLDR_ERR_BASE + 17)
+/** A prerequisite module has already failed initialization and can't be attempted
+ * reloaded until after we've finished garbage collection. */
+#define KLDR_ERR_PREREQUISITE_MODULE_INIT_FAILED_ALREADY (KLDR_ERR_BASE + 18)
+/** Prerequisite recursed too deeply. */
+#define KLDR_ERR_PREREQUISITE_RECURSED_TOO_DEEPLY       (KLDR_ERR_BASE + 19)
+/** Failed to allocate the main stack. */
+#define KLDR_ERR_MAIN_STACK_ALLOC_FAILED                (KLDR_ERR_BASE + 20)
+/** Symbol not found. */
+#define KLDR_ERR_SYMBOL_NOT_FOUND                       (KLDR_ERR_BASE + 21)
+/** A forward symbol was encountered but the caller didn't provide any means to resolve it. */
+#define KLDR_ERR_FORWARDER_SYMBOL                       (KLDR_ERR_BASE + 22)
+/** Encountered a bad fixup. */
+#define KLDR_ERR_BAD_FIXUP                              (KLDR_ERR_BASE + 23)
+/** The import ordinal was out of bounds. */
+#define KLDR_ERR_IMPORT_ORDINAL_OUT_OF_BOUNDS           (KLDR_ERR_BASE + 24)
+/** A forwarder chain was too long. */
+#define KLDR_ERR_TOO_LONG_FORWARDER_CHAIN               (KLDR_ERR_BASE + 25)
+/** The module has no debug info. */
+#define KLDR_ERR_NO_DEBUG_INFO                          (KLDR_ERR_BASE + 26)
+/** The module is already mapped.
+ * kLdrModMap() can only be called once (without kLdrModUnmap() in between). */
+#define KLDR_ERR_ALREADY_MAPPED                         (KLDR_ERR_BASE + 27)
+/** The module was not mapped.
+ * kLdrModUnmap() should not called without being preceeded by a kLdrModMap(). */
+#define KLDR_ERR_NOT_MAPPED                             (KLDR_ERR_BASE + 28)
+/** Couldn't fit the address value into the field. Typically a relocation kind of error. */
+#define KLDR_ERR_ADDRESS_OVERFLOW                       (KLDR_ERR_BASE + 29)
+/** Couldn't fit a calculated size value into the native size type of the host. */
+#define KLDR_ERR_SIZE_OVERFLOW                          (KLDR_ERR_BASE + 30)
+/** Thread attach failed. */
+#define KLDR_ERR_THREAD_ATTACH_FAILED                   (KLDR_ERR_BASE + 31)
+/** The module wasn't a DLL or object file. */
+#define KLDR_ERR_NOT_DLL                                (KLDR_ERR_BASE + 32)
+/** The module wasn't an EXE. */
+#define KLDR_ERR_NOT_EXE                                (KLDR_ERR_BASE + 33)
+/** Not implemented yet. */
+#define KLDR_ERR_TODO                                   (KLDR_ERR_BASE + 34)
+/** No image matching the requested CPU. */
+#define KLDR_ERR_CPU_ARCH_MISMATCH                      (KLDR_ERR_BASE + 35)
+/** Invalid FAT image header. */
+#define KLDR_ERR_FAT_INVALID                            (KLDR_ERR_BASE + 36)
+/** Unsupported CPU subtype found in a FAT entry. */
+#define KLDR_ERR_FAT_UNSUPPORTED_CPU_SUBTYPE            (KLDR_ERR_BASE + 37)
+/** The image has no UUID. */
+#define KLDR_ERR_NO_IMAGE_UUID                          (KLDR_ERR_BASE + 38)
+/** Duplicate segment name. */
+#define KLDR_ERR_DUPLICATE_SEGMENT_NAME                 (KLDR_ERR_BASE + 39)
+/** @} */
+
+/** @name kLdrModPE Specific
+ * @{
+ */
+/** The base of the kLdrModPE specific status codes. */
+#define KLDR_ERR_PE_BASE                                (KLDR_ERR_BASE + 40)
+/** The machine isn't supported by the interpreter. */
+#define KLDR_ERR_PE_UNSUPPORTED_MACHINE                 (KLDR_ERR_PE_BASE + 0)
+/** The file handler isn't valid. */
+#define KLDR_ERR_PE_BAD_FILE_HEADER                     (KLDR_ERR_PE_BASE + 1)
+/** The the optional headers isn't valid. */
+#define KLDR_ERR_PE_BAD_OPTIONAL_HEADER                 (KLDR_ERR_PE_BASE + 2)
+/** One of the section headers aren't valid. */
+#define KLDR_ERR_PE_BAD_SECTION_HEADER                  (KLDR_ERR_PE_BASE + 3)
+/** Bad forwarder entry. */
+#define KLDR_ERR_PE_BAD_FORWARDER                       (KLDR_ERR_PE_BASE + 4)
+/** Forwarder module not found in the import descriptor table. */
+#define KLDR_ERR_PE_FORWARDER_IMPORT_NOT_FOUND          (KLDR_ERR_PE_BASE + 5)
+/** Bad PE fixups. */
+#define KLDR_ERR_PE_BAD_FIXUP                           (KLDR_ERR_PE_BASE + 6)
+/** Bad PE import (thunk). */
+#define KLDR_ERR_PE_BAD_IMPORT                          (KLDR_ERR_PE_BASE + 7)
+/** @} */
+
+/** @name kLdrModLX Specific
+ * @{
+ */
+/** The base of the kLdrModLX specific status codes. */
+#define KLDR_ERR_LX_BASE                                (KLDR_ERR_PE_BASE + 8)
+/** validation of LX header failed. */
+#define KLDR_ERR_LX_BAD_HEADER                          (KLDR_ERR_LX_BASE + 0)
+/** validation of the loader section (in the LX header) failed. */
+#define KLDR_ERR_LX_BAD_LOADER_SECTION                  (KLDR_ERR_LX_BASE + 1)
+/** validation of the fixup section (in the LX header) failed. */
+#define KLDR_ERR_LX_BAD_FIXUP_SECTION                   (KLDR_ERR_LX_BASE + 2)
+/** validation of the LX object table failed. */
+#define KLDR_ERR_LX_BAD_OBJECT_TABLE                    (KLDR_ERR_LX_BASE + 3)
+/** A bad page map entry was encountered. */
+#define KLDR_ERR_LX_BAD_PAGE_MAP                        (KLDR_ERR_LX_BASE + 4)
+/** Bad iterdata (EXEPACK) data. */
+#define KLDR_ERR_LX_BAD_ITERDATA                        (KLDR_ERR_LX_BASE + 5)
+/** Bad iterdata2 (EXEPACK2) data. */
+#define KLDR_ERR_LX_BAD_ITERDATA2                       (KLDR_ERR_LX_BASE + 6)
+/** Bad bundle data. */
+#define KLDR_ERR_LX_BAD_BUNDLE                          (KLDR_ERR_LX_BASE + 7)
+/** No soname. */
+#define KLDR_ERR_LX_NO_SONAME                           (KLDR_ERR_LX_BASE + 8)
+/** Bad soname. */
+#define KLDR_ERR_LX_BAD_SONAME                          (KLDR_ERR_LX_BASE + 9)
+/** Bad forwarder entry. */
+#define KLDR_ERR_LX_BAD_FORWARDER                       (KLDR_ERR_LX_BASE + 10)
+/** internal fixup chain isn't implemented yet. */
+#define KLDR_ERR_LX_NRICHAIN_NOT_SUPPORTED              (KLDR_ERR_LX_BASE + 11)
+/** @} */
+
+/** @name kLdrModMachO Specific
+ * @{
+ */
+/** The base of the kLdrModMachO specific status codes. */
+#define KLDR_ERR_MACHO_BASE                             (KLDR_ERR_LX_BASE + 12)
+/** Only native endian Mach-O files are supported. */
+#define KLDR_ERR_MACHO_OTHER_ENDIAN_NOT_SUPPORTED       (KLDR_ERR_MACHO_BASE + 0)
+/** The Mach-O header is bad or contains new and unsupported features. */
+#define KLDR_ERR_MACHO_BAD_HEADER                       (KLDR_ERR_MACHO_BASE + 1)
+/** The file type isn't supported. */
+#define KLDR_ERR_MACHO_UNSUPPORTED_FILE_TYPE            (KLDR_ERR_MACHO_BASE + 2)
+/** The machine (cputype / cpusubtype combination) isn't supported. */
+#define KLDR_ERR_MACHO_UNSUPPORTED_MACHINE              (KLDR_ERR_MACHO_BASE + 3)
+/** Bad load command(s). */
+#define KLDR_ERR_MACHO_BAD_LOAD_COMMAND                 (KLDR_ERR_MACHO_BASE + 4)
+/** Encountered an unknown load command.*/
+#define KLDR_ERR_MACHO_UNKNOWN_LOAD_COMMAND             (KLDR_ERR_MACHO_BASE + 5)
+/** Encountered a load command that's not implemented.*/
+#define KLDR_ERR_MACHO_UNSUPPORTED_LOAD_COMMAND         (KLDR_ERR_MACHO_BASE + 6)
+/** Bad section. */
+#define KLDR_ERR_MACHO_BAD_SECTION                      (KLDR_ERR_MACHO_BASE + 7)
+/** Encountered a section type that's not implemented.*/
+#define KLDR_ERR_MACHO_UNSUPPORTED_SECTION              (KLDR_ERR_MACHO_BASE + 8)
+/** Encountered a init function section.   */
+#define KLDR_ERR_MACHO_UNSUPPORTED_INIT_SECTION         (KLDR_ERR_MACHO_BASE + 9)
+/** Encountered a term function section.   */
+#define KLDR_ERR_MACHO_UNSUPPORTED_TERM_SECTION         (KLDR_ERR_MACHO_BASE + 10)
+/** Encountered a section type that's not known to the loader. (probably invalid) */
+#define KLDR_ERR_MACHO_UNKNOWN_SECTION                  (KLDR_ERR_MACHO_BASE + 11)
+/** The sections aren't ordered by segment as expected by the loader. */
+#define KLDR_ERR_MACHO_BAD_SECTION_ORDER                (KLDR_ERR_MACHO_BASE + 12)
+/** The image is 32-bit and contains 64-bit load commands or vise versa. */
+#define KLDR_ERR_MACHO_BIT_MIX                          (KLDR_ERR_MACHO_BASE + 13)
+/** Bad MH_OBJECT file. */
+#define KLDR_ERR_MACHO_BAD_OBJECT_FILE                  (KLDR_ERR_MACHO_BASE + 14)
+/** Bad symbol table entry. */
+#define KLDR_ERR_MACHO_BAD_SYMBOL                       (KLDR_ERR_MACHO_BASE + 15)
+/** Unsupported fixup type. */
+#define KLDR_ERR_MACHO_UNSUPPORTED_FIXUP_TYPE           (KLDR_ERR_MACHO_BASE + 16)
+/** Both debug and non-debug sections in segment. */
+#define KLDR_ERR_MACHO_MIXED_DEBUG_SECTION_FLAGS        (KLDR_ERR_MACHO_BASE + 17)
+/** The segment bits are non-contiguous in the file. */
+#define KLDR_ERR_MACHO_NON_CONT_SEG_BITS                (KLDR_ERR_MACHO_BASE + 18)
+/** @} */
+
+/** @name kCpu Specific
+ * @{
+ */
+/** The base of the kCpu specific status codes. */
+#define KCPU_ERR_BASE                                   (KLDR_ERR_MACHO_BASE + 19)
+/** The specified ARCH+CPU pairs aren't compatible. */
+#define KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE                (KCPU_ERR_BASE + 0)
+/** @} */
+
+/** End of the valid status codes. */
+#define KERR_END                                        (KCPU_ERR_BASE + 1)
+/** @}*/
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kHlp.h b/src/lib/kStuff/include/k/kHlp.h
new file mode 100644
index 0000000..7e83b85
--- /dev/null
+++ b/src/lib/kStuff/include/k/kHlp.h
@@ -0,0 +1,53 @@
+/* $Id: kHlp.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlp - Helpers, All Of Them.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kHlp_h___
+#define ___k_kHlp_h___
+
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+#include <k/kErrors.h>
+#include <k/kHlpAlloc.h>
+#include <k/kHlpAssert.h>
+#include <k/kHlpEnv.h>
+#include <k/kHlpPath.h>
+#include <k/kHlpProcess.h>
+#include <k/kHlpSem.h>
+#include <k/kHlpString.h>
+#include <k/kHlpThread.h>
+
+/** @defgroup grp_kHlp  kHlp - Helper Functions
+ * @{ */
+
+/** @} */
+
+#endif
+
+
diff --git a/src/lib/kStuff/include/k/kHlpAlloc.h b/src/lib/kStuff/include/k/kHlpAlloc.h
new file mode 100644
index 0000000..99ae8b6
--- /dev/null
+++ b/src/lib/kStuff/include/k/kHlpAlloc.h
@@ -0,0 +1,78 @@
+/* $Id: kHlpAlloc.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpAlloc - Memory Allocation.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kHlpAlloc_h___
+#define ___k_kHlpAlloc_h___
+
+#include <k/kHlpDefs.h>
+#include <k/kTypes.h>
+
+/** @defgroup grp_kHlpAlloc kHlpAlloc - Memory Allocation
+ * @addtogroup grp_kHlp
+ * @{*/
+
+/** @def kHlpAllocA
+ * The alloca() wrapper. */
+#ifdef __GNUC__
+# define kHlpAllocA(a)      __builtin_alloca(a)
+#elif defined(_MSC_VER)
+# include <malloc.h>
+# define kHlpAllocA(a)      alloca(a)
+#else
+# error "Port Me."
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+KHLP_DECL(void *)   kHlpAlloc(KSIZE cb);
+KHLP_DECL(void *)   kHlpAllocZ(KSIZE cb);
+KHLP_DECL(void *)   kHlpDup(const void *pv, KSIZE cb);
+KHLP_DECL(char *)   kHlpStrDup(const char *psz);
+KHLP_DECL(void *)   kHlpRealloc(void *pv, KSIZE cb);
+KHLP_DECL(void)     kHlpFree(void *pv);
+
+KHLP_DECL(int)      kHlpPageAlloc(void **ppv, KSIZE cb, KPROT enmProt, KBOOL fFixed);
+KHLP_DECL(int)      kHlpPageProtect(void *pv, KSIZE cb, KPROT enmProt);
+KHLP_DECL(int)      kHlpPageFree(void *pv, KSIZE cb);
+
+KHLP_DECL(int)      kHlpHeapInit(void);
+KHLP_DECL(void)     kHlpHeapTerm(void);
+KHLP_DECL(void)     kHlpHeapDonate(void *pv, KSIZE cb);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kHlpAssert.h b/src/lib/kStuff/include/k/kHlpAssert.h
new file mode 100644
index 0000000..45105d1
--- /dev/null
+++ b/src/lib/kStuff/include/k/kHlpAssert.h
@@ -0,0 +1,369 @@
+/* $Id: kHlpAssert.h 119 2021-12-19 13:01:47Z bird $ */
+/** @file
+ * kHlpAssert - Assertion Macros.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___kHlpAssert_h___
+#define ___kHlpAssert_h___
+
+#include <k/kHlpDefs.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @defgroup   grp_kHlpAssert - Assertion Macros
+ * @addtogroup grp_kHlp
+ * @{ */
+
+/** @def K_STRICT
+ * Assertions are enabled when K_STRICT is \#defined. */
+
+/** @def kHlpAssertBreakpoint
+ * Emits a breakpoint instruction or somehow triggers a debugger breakpoint.
+ */
+#ifdef _MSC_VER
+# define kHlpAssertBreakpoint() do { __debugbreak(); } while (0)
+#elif defined(__GNUC__) && K_OS == K_OS_SOLARIS && (K_ARCH == K_ARCH_AMD64 || K_ARCH == K_ARCH_X86_32)
+# define kHlpAssertBreakpoint() do { __asm__ __volatile__ ("int $3"); } while (0)
+#elif defined(__GNUC__) && (K_ARCH == K_ARCH_AMD64 || K_ARCH == K_ARCH_X86_32 || K_ARCH == K_ARCH_X86_16)
+# define kHlpAssertBreakpoint() do { __asm__ __volatile__ ("int3"); } while (0)
+#elif defined(__GNUC__) && (K_ARCH == K_ARCH_ARM_64 || K_ARCH == K_ARCH_ARM_32) /* probably not supported by older ARM CPUs */
+# define kHlpAssertBreakpoint() do { __asm__ __volatile__ ("brk	#0x1"); } while (0)
+#elif defined(__GNUC__) && (K_ARCH == K_ARCH_SPARC_32)
+# define kHlpAssertBreakpoint() do { __asm__ __volatile__ ("unimp 0"); } while (0) /*??*/
+#elif defined(__GNUC__) && (K_ARCH == K_ARCH_SPARC_64)
+# define kHlpAssertBreakpoint() do { __asm__ __volatile__ ("illtrap 0"); } while (0) /*??*/
+#else
+# error "Port Me"
+#endif
+
+/** @def K_FUNCTION
+ * Undecorated function name macro expanded by the compiler.
+ */
+#if defined(__GNUC__)
+# define K_FUNCTION __func__
+#else
+# define K_FUNCTION __FUNCTION__
+#endif
+
+#ifdef K_STRICT
+
+# define kHlpAssert(expr) \
+    do { \
+        if (!(expr)) \
+        { \
+            kHlpAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kHlpAssertBreakpoint(); \
+        } \
+    } while (0)
+
+# define kHlpAssertStmt(expr, stmt) \
+    do { \
+        if (!(expr)) \
+        { \
+            kHlpAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kHlpAssertBreakpoint(); \
+            stmt; \
+        } \
+    } while (0)
+
+# define kHlpAssertReturn(expr, rcRet) \
+    do { \
+        if (!(expr)) \
+        { \
+            kHlpAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kHlpAssertBreakpoint(); \
+            return (rcRet); \
+        } \
+    } while (0)
+
+# define kHlpAssertStmtReturn(expr, stmt, rcRet) \
+    do { \
+        if (!(expr)) \
+        { \
+            kHlpAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kHlpAssertBreakpoint(); \
+            stmt; \
+            return (rcRet); \
+        } \
+    } while (0)
+
+# define kHlpAssertReturnVoid(expr) \
+    do { \
+        if (!(expr)) \
+        { \
+            kHlpAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kHlpAssertBreakpoint(); \
+            return; \
+        } \
+    } while (0)
+
+# define kHlpAssertStmtReturnVoid(expr, stmt) \
+    do { \
+        if (!(expr)) \
+        { \
+            kHlpAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kHlpAssertBreakpoint(); \
+            stmt; \
+            return; \
+        } \
+    } while (0)
+
+# define kHlpAssertMsg(expr, msg) \
+    do { \
+        if (!(expr)) \
+        { \
+            kHlpAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kHlpAssertMsg2 msg; \
+            kHlpAssertBreakpoint(); \
+        } \
+    } while (0)
+
+# define kHlpAssertMsgStmt(expr, msg, stmt) \
+    do { \
+        if (!(expr)) \
+        { \
+            kHlpAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kHlpAssertMsg2 msg; \
+            kHlpAssertBreakpoint(); \
+            stmt; \
+        } \
+    } while (0)
+
+# define kHlpAssertMsgReturn(expr, msg, rcRet) \
+    do { \
+        if (!(expr)) \
+        { \
+            kHlpAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kHlpAssertMsg2 msg; \
+            kHlpAssertBreakpoint(); \
+            return (rcRet); \
+        } \
+    } while (0)
+
+# define kHlpAssertMsgStmtReturn(expr, msg, stmt, rcRet) \
+    do { \
+        if (!(expr)) \
+        { \
+            kHlpAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kHlpAssertMsg2 msg; \
+            kHlpAssertBreakpoint(); \
+            stmt; \
+            return (rcRet); \
+        } \
+    } while (0)
+
+# define kHlpAssertMsgReturnVoid(expr, msg) \
+    do { \
+        if (!(expr)) \
+        { \
+            kHlpAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kHlpAssertMsg2 msg; \
+            kHlpAssertBreakpoint(); \
+            return; \
+        } \
+    } while (0)
+
+# define kHlpAssertMsgStmtReturnVoid(expr, msg, stmt) \
+    do { \
+        if (!(expr)) \
+        { \
+            kHlpAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kHlpAssertMsg2 msg; \
+            kHlpAssertBreakpoint(); \
+            stmt; \
+            return; \
+        } \
+    } while (0)
+
+/* Same as above, only no expression. */
+
+# define kHlpAssertFailed() \
+    do { \
+        kHlpAssertMsg1("failed", __FILE__, __LINE__, K_FUNCTION); \
+        kHlpAssertBreakpoint(); \
+    } while (0)
+
+# define kHlpAssertFailedStmt(stmt) \
+    do { \
+        kHlpAssertMsg1("failed", __FILE__, __LINE__, K_FUNCTION); \
+        kHlpAssertBreakpoint(); \
+        stmt; \
+    } while (0)
+
+# define kHlpAssertFailedReturn(rcRet) \
+    do { \
+        kHlpAssertMsg1("failed", __FILE__, __LINE__, K_FUNCTION); \
+        kHlpAssertBreakpoint(); \
+        return (rcRet); \
+    } while (0)
+
+# define kHlpAssertFailedStmtReturn(stmt, rcRet) \
+    do { \
+        kHlpAssertMsg1("failed", __FILE__, __LINE__, K_FUNCTION); \
+        kHlpAssertBreakpoint(); \
+        stmt; \
+        return (rcRet); \
+    } while (0)
+
+# define kHlpAssertFailedReturnVoid() \
+    do { \
+        kHlpAssertMsg1("failed", __FILE__, __LINE__, K_FUNCTION); \
+        kHlpAssertBreakpoint(); \
+        return; \
+    } while (0)
+
+# define kHlpAssertFailedStmtReturnVoid(stmt) \
+    do { \
+        kHlpAssertMsg1("failed", __FILE__, __LINE__, K_FUNCTION); \
+        kHlpAssertBreakpoint(); \
+        stmt; \
+        return; \
+    } while (0)
+
+# define kHlpAssertMsgFailed(msg) \
+    do { \
+        kHlpAssertMsg1("failed", __FILE__, __LINE__, K_FUNCTION); \
+        kHlpAssertMsg2 msg; \
+        kHlpAssertBreakpoint(); \
+    } while (0)
+
+# define kHlpAssertMsgFailedStmt(msg, stmt) \
+    do { \
+        kHlpAssertMsg1("failed", __FILE__, __LINE__, K_FUNCTION); \
+        kHlpAssertMsg2 msg; \
+        kHlpAssertBreakpoint(); \
+        stmt; \
+    } while (0)
+
+# define kHlpAssertMsgFailedReturn(msg, rcRet) \
+    do { \
+        kHlpAssertMsg1("failed", __FILE__, __LINE__, K_FUNCTION); \
+        kHlpAssertMsg2 msg; \
+        kHlpAssertBreakpoint(); \
+        return (rcRet); \
+    } while (0)
+
+# define kHlpAssertMsgFailedStmtReturn(msg, stmt, rcRet) \
+    do { \
+        kHlpAssertMsg1("failed", __FILE__, __LINE__, K_FUNCTION); \
+        kHlpAssertMsg2 msg; \
+        kHlpAssertBreakpoint(); \
+        stmt; \
+        return (rcRet); \
+    } while (0)
+
+# define kHlpAssertMsgFailedReturnVoid(msg) \
+    do { \
+        kHlpAssertMsg1("failed", __FILE__, __LINE__, K_FUNCTION); \
+        kHlpAssertMsg2 msg; \
+        kHlpAssertBreakpoint(); \
+        return; \
+    } while (0)
+
+# define kHlpAssertMsgFailedStmtReturnVoid(msg, stmt) \
+    do { \
+        kHlpAssertMsg1("failed", __FILE__, __LINE__, K_FUNCTION); \
+        kHlpAssertMsg2 msg; \
+        kHlpAssertBreakpoint(); \
+        stmt; \
+        return; \
+    } while (0)
+
+
+#else   /* !K_STRICT */
+
+# define kHlpAssert(expr)                                   do { } while (0)
+# define kHlpAssertStmt(expr, stmt)                         do { if (!(expr)) { stmt; }  } while (0)
+# define kHlpAssertReturn(expr, rcRet)                      do { if (!(expr)) return (rcRet); } while (0)
+# define kHlpAssertStmtReturn(expr, stmt, rcRet)            do { if (!(expr)) { stmt; return (rcRet); } } while (0)
+# define kHlpAssertReturnVoid(expr)                         do { if (!(expr)) return; } while (0)
+# define kHlpAssertStmtReturnVoid(expr, stmt)               do { if (!(expr)) { stmt; return; } } while (0)
+# define kHlpAssertMsg(expr, msg)                           do { } while (0)
+# define kHlpAssertMsgStmt(expr, msg, stmt)                 do { if (!(expr)) { stmt; } } while (0)
+# define kHlpAssertMsgReturn(expr, msg, rcRet)              do { if (!(expr)) return (rcRet); } while (0)
+# define kHlpAssertMsgStmtReturn(expr, msg, stmt, rcRet)    do { if (!(expr)) { stmt; return (rcRet); } } while (0)
+# define kHlpAssertMsgReturnVoid(expr, msg)                 do { if (!(expr)) return; } while (0)
+# define kHlpAssertMsgStmtReturnVoid(expr, msg, stmt)       do { if (!(expr)) { stmt; return; } } while (0)
+/* Same as above, only no expression: */
+# define kHlpAssertFailed()                                 do { } while (0)
+# define kHlpAssertFailedStmt(stmt)                         do { stmt; } while (0)
+# define kHlpAssertFailedReturn(rcRet)                      do { return (rcRet); } while (0)
+# define kHlpAssertFailedStmtReturn(stmt, rcRet)            do { stmt; return (rcRet);  } while (0)
+# define kHlpAssertFailedReturnVoid()                       do { return; } while (0)
+# define kHlpAssertFailedStmtReturnVoid(stmt)               do { stmt; return; }  while (0)
+# define kHlpAssertMsgFailed(msg)                           do { } while (0)
+# define kHlpAssertMsgFailedStmt(msg, stmt)                 do { stmt; } while (0)
+# define kHlpAssertMsgFailedReturn(msg, rcRet)              do { return (rcRet); } while (0)
+# define kHlpAssertMsgFailedStmtReturn(msg, stmt, rcRet)    do { { stmt; return (rcRet); } } while (0)
+# define kHlpAssertMsgFailedReturnVoid(msg)                 do { return; } while (0)
+# define kHlpAssertMsgFailedStmtReturnVoid(msg, stmt)       do { stmt; return; } while (0)
+
+#endif  /* !K_STRICT */
+
+#define kHlpAssertPtr(ptr)                      kHlpAssertMsg(K_VALID_PTR(ptr), ("%s = %p\n", #ptr, (ptr)))
+#define kHlpAssertPtrReturn(ptr, rcRet)         kHlpAssertMsgReturn(K_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)), (rcRet))
+#define kHlpAssertPtrReturn(ptr, rcRet)         kHlpAssertMsgReturn(K_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)), (rcRet))
+#define kHlpAssertPtrReturnVoid(ptr)            kHlpAssertMsgReturnVoid(K_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)))
+#define kHlpAssertPtrNull(ptr)                  kHlpAssertMsg(!(ptr) || K_VALID_PTR(ptr), ("%s = %p\n", #ptr, (ptr)))
+#define kHlpAssertPtrNullReturn(ptr, rcRet)     kHlpAssertMsgReturn(!(ptr) || K_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)), (rcRet))
+#define kHlpAssertPtrNullReturnVoid(ptr)        kHlpAssertMsgReturnVoid(!(ptr) || K_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)))
+#define kHlpAssertRC(rc)                        kHlpAssertMsg((rc) == 0, ("%s = %d\n", #rc, (rc)))
+#define kHlpAssertRCReturn(rc, rcRet)           kHlpAssertMsgReturn((rc) == 0, ("%s = %d -> %d\n", #rc, (rc), (rcRet)), (rcRet))
+#define kHlpAssertRCReturnVoid(rc)              kHlpAssertMsgReturnVoid((rc) == 0, ("%s = %d -> %d\n", #rc, (rc), (rcRet)))
+
+
+/**
+ * Helper function that displays the first part of the assertion message.
+ *
+ * @param   pszExpr         The expression.
+ * @param   pszFile         The file name.
+ * @param   iLine           The line number is the file.
+ * @param   pszFunction     The function name.
+ * @internal
+ */
+KHLP_DECL(void) kHlpAssertMsg1(const char *pszExpr, const char *pszFile, unsigned iLine, const char *pszFunction);
+
+/**
+ * Helper function that displays custom assert message.
+ *
+ * @param   pszFormat       Format string that get passed to vprintf.
+ * @param   ...             Format arguments.
+ * @internal
+ */
+KHLP_DECL(void) kHlpAssertMsg2(const char *pszFormat, ...);
+
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/lib/kStuff/include/k/kHlpDefs.h b/src/lib/kStuff/include/k/kHlpDefs.h
new file mode 100644
index 0000000..bcda10a
--- /dev/null
+++ b/src/lib/kStuff/include/k/kHlpDefs.h
@@ -0,0 +1,55 @@
+/* $Id: kHlpDefs.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpDefs - Helper Definitions.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kHlpDefs_h___
+#define ___k_kHlpDefs_h___
+
+#include <k/kDefs.h>
+
+/** @defgroup grp_kHlpDefs - Definitions
+ * @addtogroup grp_kHlp
+ * @{ */
+
+/** @def KHLP_DECL
+ * Declares a kHlp function according to build context.
+ * @param type          The return type.
+ */
+#if defined(KHLP_BUILDING_DYNAMIC)
+# define KHLP_DECL(type)    K_DECL_EXPORT(type)
+#elif defined(KHLP_BUILT_DYNAMIC)
+# define KHLP_DECL(type)    K_DECL_IMPORT(type)
+#else
+# define KHLP_DECL(type)    type
+#endif
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kHlpEnv.h b/src/lib/kStuff/include/k/kHlpEnv.h
new file mode 100644
index 0000000..95c2bda
--- /dev/null
+++ b/src/lib/kStuff/include/k/kHlpEnv.h
@@ -0,0 +1,55 @@
+/* $Id: kHlpEnv.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpEnv - Environment Manipulation.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kHlpEnv_h___
+#define ___k_kHlpEnv_h___
+
+#include <k/kHlpDefs.h>
+#include <k/kTypes.h>
+
+/** @defgroup grp_kHlpEnv kHlpEnv - Environment Manipulation
+ * @addtogroup grp_kHlp
+ * @{*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+KHLP_DECL(int)  kHlpGetEnv(const char *pszVar, char *pszVal, KSIZE cchVal);
+KHLP_DECL(int)  kHlpGetEnvUZ(const char *pszVar, KSIZE *pcb);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kHlpPath.h b/src/lib/kStuff/include/k/kHlpPath.h
new file mode 100644
index 0000000..c9d6ce5
--- /dev/null
+++ b/src/lib/kStuff/include/k/kHlpPath.h
@@ -0,0 +1,57 @@
+/* $Id: kHlpPath.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpPath - Path Manipulation.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kHlpPath_h___
+#define ___k_kHlpPath_h___
+
+#include <k/kHlpDefs.h>
+#include <k/kTypes.h>
+
+/** @defgroup grp_kHlpPath kHlpPath - Path Manipulation
+ * @addtogroup grp_kHlp
+ * @{*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+KHLP_DECL(char *)  kHlpGetFilename(const char *pszFilename);
+KHLP_DECL(char *)  kHlpGetSuff(const char *pszFilename);
+KHLP_DECL(char *)  kHlpGetExt(const char *pszFilename);
+KHLP_DECL(int)     kHlpIsFilenameOnly(const char *pszFilename);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kHlpProcess.h b/src/lib/kStuff/include/k/kHlpProcess.h
new file mode 100644
index 0000000..c637545
--- /dev/null
+++ b/src/lib/kStuff/include/k/kHlpProcess.h
@@ -0,0 +1,54 @@
+/* $Id: kHlpProcess.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpProcess - Process Management.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kHlpProcess_h___
+#define ___k_kHlpProcess_h___
+
+#include <k/kHlpDefs.h>
+#include <k/kTypes.h>
+
+/** @defgroup grp_kHlpProcess   kHlpProcess - Process Management
+ * @addtogroup grp_kHlp
+ * @{*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+KHLP_DECL(void) kHlpExit(int rc);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kHlpSem.h b/src/lib/kStuff/include/k/kHlpSem.h
new file mode 100644
index 0000000..72c6407
--- /dev/null
+++ b/src/lib/kStuff/include/k/kHlpSem.h
@@ -0,0 +1,54 @@
+/* $Id: kHlpSem.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpSem - Semaphores.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kHlpSem_h___
+#define ___k_kHlpSem_h___
+
+#include <k/kHlpDefs.h>
+#include <k/kTypes.h>
+
+/** @defgroup grp_kHlpSem kHlpSem - Semaphore
+ * @addtogroup grp_kHlp
+ * @{*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+
+#endif
+
+
diff --git a/src/lib/kStuff/include/k/kHlpString.h b/src/lib/kStuff/include/k/kHlpString.h
new file mode 100644
index 0000000..23da03d
--- /dev/null
+++ b/src/lib/kStuff/include/k/kHlpString.h
@@ -0,0 +1,156 @@
+/* $Id: kHlpString.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - String And Memory Routines.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kHlpString_h___
+#define ___k_kHlpString_h___
+
+#include <k/kHlpDefs.h>
+#include <k/kTypes.h>
+
+#if 0 /* optimize / fix this later */
+#ifdef __GNUC__
+/** memchr */
+# define kHlpMemChr(a,b,c)      __builtin_memchr(a,b,c)
+/** memcmp */
+# define kHlpMemComp(a,b,c)     __builtin_memcmp(a,b,c)
+/** memcpy */
+# define kHlpMemCopy(a,b,c)     __builtin_memcpy(a,b,c)
+/** memset */
+# define kHlpMemSet(a,b,c)      __builtin_memset(a,b,c)
+/** strchr */
+# define kHlpStrChr(a, b)       __builtin_strchr(a, b)
+/** strcmp */
+# define kHlpStrComp(a, b)      __builtin_strcmp(a, b)
+/** strncmp */
+# define kHlpStrNComp(a,b,c)    __builtin_strncmp(a, b, c)
+/** strlen */
+# define kHlpStrLen(a)          __builtin_strlen(a)
+
+#elif defined(_MSC_VER)
+# pragma intrinsic(memcmp, memcpy, memset, strcmp, strlen)
+/** memcmp */
+# define kHlpMemComp(a,b,c)     memcmp(a,b,c)
+/** memcpy */
+# define kHlpMemCopy(a,b,c)     memcpy(a,b,c)
+/** memset */
+# define kHlpMemSet(a,b,c)      memset(a,b,c)
+/** strcmp */
+# define kHlpStrComp(a, b)      strcmp(a, b)
+/** strlen */
+# define kHlpStrLen(a)          strlen(a)
+#else
+# error "Port Me"
+#endif
+#endif /* disabled */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef kHlpMemChr
+KHLP_DECL(void *)   kHlpMemChr(const void *pv, int ch, KSIZE cb);
+#endif
+#ifndef kHlpMemComp
+KHLP_DECL(int)      kHlpMemComp(const void *pv1, const void *pv2, KSIZE cb);
+#endif
+#ifndef kHlpMemComp
+KHLP_DECL(void *)   kHlpMemPComp(const void *pv1, const void *pv2, KSIZE cb);
+#endif
+#ifndef kHlpMemCopy
+KHLP_DECL(void *)   kHlpMemCopy(void *pv1, const void *pv2, KSIZE cb);
+#endif
+#ifndef kHlpMemPCopy
+KHLP_DECL(void *)   kHlpMemPCopy(void *pv1, const void *pv2, KSIZE cb);
+#endif
+#ifndef kHlpMemMove
+KHLP_DECL(void *)   kHlpMemMove(void *pv1, const void *pv2, KSIZE cb);
+#endif
+#ifndef kHlpMemPMove
+KHLP_DECL(void *)   kHlpMemPMove(void *pv1, const void *pv2, KSIZE cb);
+#endif
+#ifndef kHlpMemSet
+KHLP_DECL(void *)   kHlpMemSet(void *pv1, int ch, KSIZE cb);
+#endif
+#ifndef kHlpMemPSet
+KHLP_DECL(void *)   kHlpMemPSet(void *pv1, int ch, KSIZE cb);
+#endif
+KHLP_DECL(int)      kHlpMemICompAscii(const void *pv1, const void *pv2, KSIZE cb);
+
+#ifndef kHlpStrCat
+KHLP_DECL(char *)   kHlpStrCat(char *psz1, const char *psz2);
+#endif
+#ifndef kHlpStrPCat
+KHLP_DECL(char *)   kHlpStrPCat(char *psz1, const char *psz2);
+#endif
+#ifndef kHlpStrNCat
+KHLP_DECL(char *)   kHlpStrNCat(char *psz1, const char *psz2, KSIZE cb);
+#endif
+#ifndef kHlpStrPNCat
+KHLP_DECL(char *)   kHlpStrNPCat(char *psz1, const char *psz2, KSIZE cb);
+#endif
+#ifndef kHlpStrChr
+KHLP_DECL(char *)   kHlpStrChr(const char *psz, int ch);
+#endif
+#ifndef kHlpStrRChr
+KHLP_DECL(char *)   kHlpStrRChr(const char *psz, int ch);
+#endif
+#ifndef kHlpStrComp
+KHLP_DECL(int)      kHlpStrComp(const char *psz1, const char *psz2);
+#endif
+KHLP_DECL(char *)   kHlpStrPComp(const char *psz1, const char *psz2);
+#ifndef kHlpStrNComp
+KHLP_DECL(int)      kHlpStrNComp(const char *psz1, const char *psz2, KSIZE cch);
+#endif
+KHLP_DECL(char *)   kHlpStrNPComp(const char *psz1, const char *psz2, KSIZE cch);
+KHLP_DECL(int)      kHlpStrICompAscii(const char *pv1, const char *pv2);
+KHLP_DECL(char *)   kHlpStrIPCompAscii(const char *pv1, const char *pv2);
+KHLP_DECL(int)      kHlpStrNICompAscii(const char *pv1, const char *pv2, KSIZE cch);
+KHLP_DECL(char *)   kHlpStrNIPCompAscii(const char *pv1, const char *pv2, KSIZE cch);
+#ifndef kHlpStrCopy
+KHLP_DECL(char *)   kHlpStrCopy(char *psz1, const char *psz2);
+#endif
+#ifndef kHlpStrPCopy
+KHLP_DECL(char *)   kHlpStrPCopy(char *psz1, const char *psz2);
+#endif
+#ifndef kHlpStrLen
+KHLP_DECL(KSIZE)    kHlpStrLen(const char *psz1);
+#endif
+#ifndef kHlpStrNLen
+KHLP_DECL(KSIZE)    kHlpStrNLen(const char *psz, KSIZE cchMax);
+#endif
+
+KHLP_DECL(char *)   kHlpInt2Ascii(char *psz, KSIZE cch, long lVal, unsigned iBase);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kHlpSys.h b/src/lib/kStuff/include/k/kHlpSys.h
new file mode 100644
index 0000000..63aeaee
--- /dev/null
+++ b/src/lib/kStuff/include/k/kHlpSys.h
@@ -0,0 +1,79 @@
+/* $Id: kHlpSys.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpSys - System Call Prototypes.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kHlpSys_h___
+#define ___k_kHlpSys_h___
+
+#include <k/kHlpDefs.h>
+#include <k/kTypes.h>
+
+/** @defgroup grp_kHlpSys kHlpSys - System Call Prototypes
+ * @addtogroup grp_kHlp
+ * @{*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* common unix stuff. */
+#if K_OS == K_OS_DARWIN \
+ || K_OS == K_OS_FREEBSD \
+ || K_OS == K_OS_LINUX \
+ || K_OS == K_OS_NETBSD \
+ || K_OS == K_OS_OPENBSD \
+ || K_OS == K_OS_SOLARIS
+KSSIZE      kHlpSys_readlink(const char *pszPath, char *pszBuf, KSIZE cbBuf);
+int         kHlpSys_open(const char *filename, int flags, int mode);
+int         kHlpSys_close(int fd);
+KFOFF       kHlpSys_lseek(int fd, int whench, KFOFF off);
+KSSIZE      kHlpSys_read(int fd, void *pvBuf, KSIZE cbBuf);
+KSSIZE      kHlpSys_write(int fd, const void *pvBuf, KSIZE cbBuf);
+void       *kHlpSys_mmap(void *addr, KSIZE len, int prot, int flags, int fd, KI64 off);
+int         kHlpSys_mprotect(void *addr, KSIZE len, int prot);
+int         kHlpSys_munmap(void *addr, KSIZE len);
+void        kHlpSys_exit(int rc);
+#endif
+
+/* specific */
+#if K_OS == K_OS_DARWIN
+
+#elif K_OS == K_OS_LINUX
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+
+#endif
+
+
diff --git a/src/lib/kStuff/include/k/kHlpThread.h b/src/lib/kStuff/include/k/kHlpThread.h
new file mode 100644
index 0000000..1b2f233
--- /dev/null
+++ b/src/lib/kStuff/include/k/kHlpThread.h
@@ -0,0 +1,55 @@
+/* $Id: kHlpThread.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpThread - Thread Manipulation.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kHlpThread_h___
+#define ___k_kHlpThread_h___
+
+#include <k/kHlpDefs.h>
+#include <k/kTypes.h>
+
+/** @defgroup grp_kHlpThread kHlpThread - Thread Management
+ * @addtogroup grp_kHlp
+ * @{*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+KHLP_DECL(void)    kHlpSleep(unsigned cMillies);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+
+#endif
+
+
diff --git a/src/lib/kStuff/include/k/kLdr.h b/src/lib/kStuff/include/k/kLdr.h
new file mode 100644
index 0000000..4aefb66
--- /dev/null
+++ b/src/lib/kStuff/include/k/kLdr.h
@@ -0,0 +1,959 @@
+/* $Id: kLdr.h 117 2020-03-15 15:23:36Z bird $ */
+/** @file
+ * kLdr - The Dynamic Loader.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kLdr_h___
+#define ___k_kLdr_h___
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Include the base typedefs and macros.
+ */
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+#include <k/kCpus.h>
+
+
+/** @defgroup grp_kLdrBasic     kLdr Basic Types
+ * @{ */
+
+/** The kLdr address type. */
+typedef KU64 KLDRADDR;
+/** Pointer to a kLdr address. */
+typedef KLDRADDR *PKLDRADDR;
+/** Pointer to a const kLdr address. */
+typedef const KLDRADDR *PCKLDRADDR;
+
+/** NIL address. */
+#define NIL_KLDRADDR    (~(KU64)0)
+
+/** @def PRI_KLDRADDR
+ * printf format type. */
+#ifdef _MSC_VER
+# define PRI_KLDRADDR    "I64x"
+#else
+# define PRI_KLDRADDR    "llx"
+#endif
+
+/** Align a KSIZE value. */
+#define KLDR_ALIGN_ADDR(val, align) ( ((val) + ((align) - 1)) & ~(KLDRADDR)((align) - 1) )
+
+
+/** The kLdr size type. */
+typedef KU64 KLDRSIZE;
+/** Pointer to a kLdr size. */
+typedef KLDRSIZE *PKLDRSIZE;
+/** Pointer to a const kLdr size. */
+typedef const KLDRSIZE *PCKLDRSIZE;
+
+/** @def PRI_KLDRSIZE
+ * printf format type. */
+#ifdef _MSC_VER
+# define PRI_KLDRSIZE    "I64x"
+#else
+# define PRI_KLDRSIZE    "llx"
+#endif
+
+
+/** The kLdr file offset type. */
+typedef long KLDRFOFF;
+/** Pointer to a kLdr file offset type. */
+typedef KLDRFOFF *PKLDRFOFF;
+/** Pointer to a const kLdr file offset type. */
+typedef const KLDRFOFF *PCKLDRFOFF;
+
+/** @def PRI_KLDRFOFF
+ * printf format type. */
+#define PRI_KLDRFOFF     "lx"
+
+
+/**
+ * Union of all the integer types.
+ */
+typedef union KLDRU
+{
+    KI8             i8;     /**< KI8 view. */
+    KU8             u8;     /**< KU8 view. */
+    KI16            i16;    /**< KI16 view. */
+    KU16            u16;    /**< KU16 view. */
+    KI32            i32;    /**< KI32 view. */
+    KU32            u32;    /**< KU32 view. */
+    KI64            i64;    /**< KI64 view. */
+    KU64            u64;    /**< KU64 view. */
+
+    KI8             ai8[8]; /**< KI8 array view . */
+    KU8             au8[8]; /**< KU8 array view. */
+    KI16            ai16[4];/**< KI16 array view . */
+    KU16            au16[4];/**< KU16 array view. */
+    KI32            ai32[2];/**< KI32 array view . */
+    KU32            au32[2];/**< KU32 array view. */
+
+    signed char     ch;     /**< signed char view. */
+    unsigned char   uch;    /**< unsigned char view. */
+    signed short    s;      /**< signed short view. */
+    unsigned short  us;     /**< unsigned short view. */
+    signed int      i;      /**< signed int view. */
+    unsigned int    u;      /**< unsigned int view. */
+    signed long     l;      /**< signed long view. */
+    unsigned long   ul;     /**< unsigned long view. */
+    void           *pv;     /**< void pointer view. */
+
+    KLDRADDR        Addr;   /**< kLdr address view. */
+    KLDRSIZE        Size;   /**< kLdr size view. */
+} KLDRU;
+/** Pointer to an integer union. */
+typedef KLDRU *PKLDRU;
+/** Pointer to a const integer union. */
+typedef const KLDRU *PCKLDRU;
+
+
+/**
+ * Union of pointers to all the integer types.
+ */
+typedef union KLDRPU
+{
+    KI8            *pi8;    /**< KI8 view. */
+    KU8            *pu8;    /**< KU8 view. */
+    KI16           *pi16;   /**< KI16 view. */
+    KU16           *pu16;   /**< KU16 view. */
+    KI32           *pi32;   /**< KI32 view. */
+    KU32           *pu32;   /**< KU32 view. */
+    KI64           *pi64;   /**< KI64 view. */
+    KU64           *pu64;   /**< KU64 view. */
+
+    signed char    *pch;    /**< signed char view. */
+    unsigned char  *puch;   /**< unsigned char view. */
+    signed short   *ps;     /**< signed short view. */
+    unsigned short *pus;    /**< unsigned short view. */
+    signed int     *pi;     /**< signed int view. */
+    unsigned int   *pu;     /**< unsigned int view. */
+    signed long    *pl;     /**< signed long view. */
+    unsigned long  *pul;    /**< unsigned long view. */
+    void           *pv;     /**< void pointer view. */
+} KLDRPU;
+/** Pointer to an integer pointer union. */
+typedef KLDRPU *PKLDRPU;
+/** Pointer to a const integer pointer union. */
+typedef const KLDRPU *PCKLDRPU;
+
+/** @} */
+
+
+/** @defgroup grp_kLdrMod   kLdrMod - The executable image intepreter
+ * @{ */
+
+/**
+ * Debug info type (from the loader point of view).
+ */
+typedef enum KLDRDBGINFOTYPE
+{
+    /** The usual invalid enum value. */
+    KLDRDBGINFOTYPE_INVALID = 0,
+    /** Unknown debug info format. */
+    KLDRDBGINFOTYPE_UNKNOWN,
+    /** Stabs. */
+    KLDRDBGINFOTYPE_STABS,
+    /** Debug With Arbitrary Record Format (DWARF). */
+    KLDRDBGINFOTYPE_DWARF,
+    /** Microsoft Codeview debug info. */
+    KLDRDBGINFOTYPE_CODEVIEW,
+    /** Watcom debug info. */
+    KLDRDBGINFOTYPE_WATCOM,
+    /** IBM High Level Language debug info.. */
+    KLDRDBGINFOTYPE_HLL,
+    /** The end of the valid debug info values (exclusive). */
+    KLDRDBGINFOTYPE_END,
+    /** Blow the type up to 32-bit. */
+    KLDRDBGINFOTYPE_32BIT_HACK = 0x7fffffff
+} KLDRDBGINFOTYPE;
+/** Pointer to a kLdr debug info type. */
+typedef KLDRDBGINFOTYPE *PKLDRDBGINFOTYPE;
+
+
+/**
+ * Stack information.
+ */
+typedef struct KLDRSTACKINFO
+{
+    /** The base address of the stack (sub) segment.
+     * Set this to NIL_KLDRADDR if the module doesn't include any stack segment. */
+    KLDRADDR        Address;
+    /** The base address of the stack (sub) segment, link address.
+     * Set this to NIL_KLDRADDR if the module doesn't include any stack (sub)segment. */
+    KLDRADDR        LinkAddress;
+    /** The stack size of the main thread.
+     * If no stack (sub)segment in the module, this is the stack size of the main thread.
+     * If the module doesn't contain this kind of information this field will be set to 0. */
+    KLDRSIZE        cbStack;
+    /** The stack size of non-main threads.
+     * If the module doesn't contain this kind of information this field will be set to 0. */
+    KLDRSIZE        cbStackThread;
+} KLDRSTACKINFO;
+/** Pointer to stack information. */
+typedef KLDRSTACKINFO *PKLDRSTACKINFO;
+/** Pointer to const stack information. */
+typedef const KLDRSTACKINFO *PCKLDRSTACKINFO;
+
+
+/**
+ * Loader segment.
+ */
+typedef struct KLDRSEG
+{
+    /** Variable free to use for the kLdr user. */
+    void           *pvUser;
+    /** The segment name. (Might not be zero terminated!) */
+    const char     *pchName;
+    /** The length of the segment name. */
+    KU32            cchName;
+    /** The flat selector to use for the segment (i.e. data/code).
+     * Primarily a way for the user to specify selectors for the LX/LE and NE interpreters. */
+    KU16            SelFlat;
+    /** The 16-bit selector to use for the segment.
+     * Primarily a way for the user to specify selectors for the LX/LE and NE interpreters. */
+    KU16            Sel16bit;
+    /** Segment flags. */
+    KU32            fFlags;
+    /** The segment protection. */
+    KPROT           enmProt;
+    /** The size of the segment. */
+    KLDRSIZE        cb;
+    /** The required segment alignment.
+     * The to 0 if the segment isn't supposed to be mapped. */
+    KLDRADDR        Alignment;
+    /** The link address.
+     * Set to NIL_KLDRADDR if the segment isn't supposed to be
+     * mapped or if the image doesn't have link addresses. */
+    KLDRADDR        LinkAddress;
+    /** File offset of the segment.
+     * Set to -1 if no file backing (like BSS). */
+    KLDRFOFF        offFile;
+    /** Size of the file bits of the segment.
+     * Set to -1 if no file backing (like BSS). */
+    KLDRFOFF        cbFile;
+    /** The relative virtual address when mapped.
+     * Set to NIL_KLDRADDR if the segment isn't supposed to be mapped. */
+    KLDRADDR        RVA;
+    /** The size of the segment including the alignment gap up to the next segment when mapped. */
+    KSIZE           cbMapped;
+    /** The address the segment was mapped at by kLdrModMap().
+     * Set to 0 if not mapped. */
+    KUPTR           MapAddress;
+} KLDRSEG;
+
+
+/** @name Segment flags
+ * @{ */
+/** The segment is 16-bit. When not set the default of the target architecture is assumed. */
+#define KLDRSEG_FLAG_16BIT          1
+/** The segment requires a 16-bit selector alias. (OS/2) */
+#define KLDRSEG_FLAG_OS2_ALIAS16    2
+/** Conforming segment (x86 weirdness). (OS/2) */
+#define KLDRSEG_FLAG_OS2_CONFORM    4
+/** IOPL (ring-2) segment. (OS/2) */
+#define KLDRSEG_FLAG_OS2_IOPL       8
+/** @} */
+
+
+/**
+ * Loader module format.
+ */
+typedef enum KLDRFMT
+{
+    /** The usual invalid 0 format. */
+    KLDRFMT_INVALID = 0,
+    /** The native OS loader. */
+    KLDRFMT_NATIVE,
+    /** The AOUT loader. */
+    KLDRFMT_AOUT,
+    /** The ELF loader. */
+    KLDRFMT_ELF,
+    /** The LX loader. */
+    KLDRFMT_LX,
+    /** The Mach-O loader. */
+    KLDRFMT_MACHO,
+    /** The PE loader. */
+    KLDRFMT_PE,
+    /** The end of the valid format values (exclusive). */
+    KLDRFMT_END,
+    /** Hack to blow the type up to 32-bit. */
+    KLDRFMT_32BIT_HACK = 0x7fffffff
+} KLDRFMT;
+
+
+/**
+ * Loader module type.
+ */
+typedef enum KLDRTYPE
+{
+    /** The usual invalid 0 type. */
+    KLDRTYPE_INVALID = 0,
+    /** Object file. */
+    KLDRTYPE_OBJECT,
+    /** Executable module, fixed load address. */
+    KLDRTYPE_EXECUTABLE_FIXED,
+    /** Executable module, relocatable, non-fixed load address. */
+    KLDRTYPE_EXECUTABLE_RELOCATABLE,
+    /** Executable module, position independent code, non-fixed load address. */
+    KLDRTYPE_EXECUTABLE_PIC,
+    /** Shared library, fixed load address.
+     * Typically a system library. */
+    KLDRTYPE_SHARED_LIBRARY_FIXED,
+    /** Shared library, relocatable, non-fixed load address. */
+    KLDRTYPE_SHARED_LIBRARY_RELOCATABLE,
+    /** Shared library, position independent code, non-fixed load address. */
+    KLDRTYPE_SHARED_LIBRARY_PIC,
+    /** DLL that contains no code or data only imports and exports. (Chiefly OS/2.) */
+    KLDRTYPE_FORWARDER_DLL,
+    /** Core or dump. */
+    KLDRTYPE_CORE,
+    /** Debug module (debug info with empty code & data segments). */
+    KLDRTYPE_DEBUG_INFO,
+    /** The end of the valid types values (exclusive). */
+    KLDRTYPE_END,
+    /** Hack to blow the type up to 32-bit. */
+    KLDRTYPE_32BIT_HACK = 0x7fffffff
+} KLDRTYPE;
+
+
+/**
+ * Loader endian indicator.
+ */
+typedef enum KLDRENDIAN
+{
+    /** The usual invalid endian. */
+    KLDRENDIAN_INVALID,
+    /** Little endian. */
+    KLDRENDIAN_LITTLE,
+    /** Bit endian. */
+    KLDRENDIAN_BIG,
+    /** Endianness doesn't have a meaning in the context. */
+    KLDRENDIAN_NA,
+    /** The end of the valid endian values (exclusive). */
+    KLDRENDIAN_END,
+    /** Hack to blow the type up to 32-bit. */
+    KLDRENDIAN_32BIT_HACK = 0x7fffffff
+} KLDRENDIAN;
+
+
+/** @name KLDRMOD::fFlags
+ * @{ */
+/** The link address doesn't form a contiguous image, from the first to the
+ * last segment.   */
+#define KLDRMOD_FLAGS_NON_CONTIGUOUS_LINK_ADDRS         K_BIT32(0)
+/** @} */
+
+/** Pointer to a module interpreter method table. */
+typedef struct KLDRMODOPS *PKLDRMODOPS;
+/** Pointer to const module interpreter methods table. */
+typedef const struct KLDRMODOPS *PCKLDRMODOPS;
+
+/**
+ * Module interpreter instance.
+ * All members are read only unless you're kLdrMod or the module interpreter.
+ */
+typedef struct KLDRMOD
+{
+    /** Magic number (KLDRMOD_MAGIC). */
+    KU32                u32Magic;
+    /** The format of this module. */
+    KLDRFMT             enmFmt;
+    /** The type of module. */
+    KLDRTYPE            enmType;
+    /** The CPU architecture this module was built for. */
+    KCPUARCH            enmArch;
+    /** The minium cpu this module was built for.
+     * This might not be accurate, so use kLdrModCanExecuteOn() to check. */
+    KCPU                enmCpu;
+    /** The endian used by the module. */
+    KLDRENDIAN          enmEndian;
+    /** Module open flags, KLDRMOD_OPEN_FLAGS_XXX. */
+    KU32                fFlags;
+    /** The filename length (bytes). */
+    KU32                cchFilename;
+    /** The filename. */
+    const char         *pszFilename;
+    /** The module name. */
+    const char         *pszName;
+    /** The module name length (bytes). */
+    KU32                cchName;
+    /** The number of segments in the module. */
+    KU32                cSegments;
+    /** Pointer to the loader methods.
+     * Not meant for calling directly thru! */
+    PCKLDRMODOPS        pOps;
+    /** Pointer to the read instance. (Can be NULL after kLdrModDone().)*/
+    PKRDR               pRdr;
+    /** The module data. */
+    void               *pvData;
+    /** Segments. (variable size, can be zero) */
+    KLDRSEG             aSegments[1];
+} KLDRMOD, *PKLDRMOD, **PPKLDRMOD;
+
+/** The magic for KLDRMOD::u32Magic. (Kosuke Fujishima) */
+#define KLDRMOD_MAGIC   0x19640707
+
+
+/** Special base address value alias for the link address. */
+#define KLDRMOD_BASEADDRESS_LINK            (~(KLDRADDR)1)
+/** Special base address value alias for the actual load address (must be mapped). */
+#define KLDRMOD_BASEADDRESS_MAP             (~(KLDRADDR)2)
+
+/** Special import module ordinal value used to indicate that there is no
+ * specific module associated with the requested symbol. */
+#define NIL_KLDRMOD_IMPORT                  (~(KU32)0)
+
+/** Special symbol ordinal value used to indicate that the symbol
+ * only has a string name. */
+#define NIL_KLDRMOD_SYM_ORDINAL             (~(KU32)0)
+
+
+/** @name Load symbol kind flags.
+ * @{ */
+/** The bitness doesn't matter. */
+#define KLDRSYMKIND_NO_BIT                  0x00000000
+/** 16-bit symbol. */
+#define KLDRSYMKIND_16BIT                   0x00000001
+/** 32-bit symbol. */
+#define KLDRSYMKIND_32BIT                   0x00000002
+/** 64-bit symbol. */
+#define KLDRSYMKIND_64BIT                   0x00000003
+/** Mask out the bit.*/
+#define KLDRSYMKIND_BIT_MASK                0x00000003
+/** We don't know the type of symbol. */
+#define KLDRSYMKIND_NO_TYPE                 0x00000000
+/** The symbol is a code object (method/function/procedure/whateveryouwannacallit). */
+#define KLDRSYMKIND_CODE                    0x00000010
+/** The symbol is a data object. */
+#define KLDRSYMKIND_DATA                    0x00000020
+/** Mask out the symbol type. */
+#define KLDRSYMKIND_TYPE_MASK               0x00000030
+/** Valid symbol kind mask. */
+#define KLDRSYMKIND_MASK                    0x00000033
+/** Weak symbol. */
+#define KLDRSYMKIND_WEAK                    0x00000100
+/** Forwarder symbol. */
+#define KLDRSYMKIND_FORWARDER               0x00000200
+/** Request a flat symbol address. */
+#define KLDRSYMKIND_REQ_FLAT                0x00000000
+/** Request a segmented symbol address. */
+#define KLDRSYMKIND_REQ_SEGMENTED           0x40000000
+/** Request type mask. */
+#define KLDRSYMKIND_REQ_TYPE_MASK           0x40000000
+/** @} */
+
+/** @name kLdrModEnumSymbols flags.
+ * @{ */
+/** Returns ALL kinds of symbols. The default is to only return public/exported symbols. */
+#define KLDRMOD_ENUM_SYMS_FLAGS_ALL         0x00000001
+/** @} */
+
+
+/**
+ * Callback for resolving imported symbols when applying fixups.
+ *
+ * @returns 0 on success and *pValue and *pfKind filled.
+ * @returns Non-zero OS specific or kLdr status code on failure.
+ *
+ * @param   pMod        The module which fixups are begin applied.
+ * @param   iImport     The import module ordinal number or NIL_KLDRMOD_IMPORT.
+ * @param   iSymbol     The symbol ordinal number or NIL_KLDRMOD_SYM_ORDINAL.
+ * @param   pchSymbol   The symbol name. Can be NULL if iSymbol isn't nil. Doesn't have to be null-terminated.
+ * @param   cchSymbol   The length of the symbol.
+ * @param   pszVersion  The symbol version. NULL if not versioned.
+ * @param   puValue     Where to store the symbol value.
+ * @param   pfKind      Where to store the symbol kind flags.
+ * @param   pvUser      The user parameter specified to the relocation function.
+ */
+typedef int FNKLDRMODGETIMPORT(PKLDRMOD pMod, KU32 iImport, KU32 iSymbol, const char *pchSymbol, KSIZE cchSymbol,
+                               const char *pszVersion, PKLDRADDR puValue, KU32 *pfKind, void *pvUser);
+/** Pointer to a import callback. */
+typedef FNKLDRMODGETIMPORT *PFNKLDRMODGETIMPORT;
+
+/**
+ * Symbol enumerator callback.
+ *
+ * @returns 0 if enumeration should continue.
+ * @returns non-zero if the enumeration should stop. This status code will then be returned by kLdrModEnumSymbols().
+ *
+ * @param   pMod        The module which symbols are being enumerated.s
+ * @param   iSymbol     The symbol ordinal number or NIL_KLDRMOD_SYM_ORDINAL.
+ * @param   pchSymbol   The symbol name. This can be NULL if there is a symbol ordinal.
+ *                      This can also be an empty string if the symbol doesn't have a name
+ *                      or it's name has been stripped.
+ *                      Important, this doesn't have to be a null-terminated string.
+ * @param   cchSymbol   The length of the symbol.
+ * @param   pszVersion  The symbol version. NULL if not versioned.
+ * @param   uValue      The symbol value.
+ * @param   fKind       The symbol kind flags.
+ * @param   pvUser      The user parameter specified to kLdrModEnumSymbols().
+ */
+typedef int FNKLDRMODENUMSYMS(PKLDRMOD pMod, KU32 iSymbol, const char *pchSymbol, KSIZE cchSymbol, const char *pszVersion,
+                              KLDRADDR uValue, KU32 fKind, void *pvUser);
+/** Pointer to a symbol enumerator callback. */
+typedef FNKLDRMODENUMSYMS *PFNKLDRMODENUMSYMS;
+
+/**
+ * Debug info enumerator callback.
+ *
+ * @returns 0 to continue the enumeration.
+ * @returns non-zero if the enumeration should stop. This status code will then be returned by kLdrModEnumDbgInfo().
+ *
+ * @param   pMod        The module.
+ * @param   iDbgInfo    The debug info ordinal number / id.
+ * @param   enmType     The debug info type.
+ * @param   iMajorVer   The major version number of the debug info format. -1 if unknow - implies invalid iMinorVer.
+ * @param   iMinorVer   The minor version number of the debug info format. -1 when iMajorVer is -1.
+ * @param   pszPartNm   The name of the debug info part, NULL if not applicable.
+ * @param   offFile     The file offset *if* this type has one specific location in the executable image file.
+ *                      This is -1 if there isn't any specific file location.
+ * @param   LinkAddress The link address of the debug info if it's loadable. NIL_KLDRADDR if not loadable.
+ * @param   cb          The size of the debug information. -1 is used if this isn't applicable.
+ * @param   pszExtFile  This points to the name of an external file containing the debug info.
+ *                      This is NULL if there isn't any external file.
+ * @param   pvUser      The user parameter specified to kLdrModEnumDbgInfo.
+ */
+typedef int FNKLDRENUMDBG(PKLDRMOD pMod, KU32 iDbgInfo, KLDRDBGINFOTYPE enmType, KI16 iMajorVer, KI16 iMinorVer,
+                          const char *pszPartNm, KLDRFOFF offFile, KLDRADDR LinkAddress, KLDRSIZE cb,
+                          const char *pszExtFile, void *pvUser);
+/** Pointer to a debug info enumerator callback. */
+typedef FNKLDRENUMDBG *PFNKLDRENUMDBG;
+
+/**
+ * Resource enumerator callback.
+ *
+ * @returns 0 to continue the enumeration.
+ * @returns non-zero if the enumeration should stop. This status code will then be returned by kLdrModEnumResources().
+ *
+ * @param   pMod        The module.
+ * @param   idType      The resource type id. NIL_KLDRMOD_RSRC_TYPE_ID if no type id.
+ * @param   pszType     The resource type name. NULL if no type name.
+ * @param   idName      The resource id. NIL_KLDRMOD_RSRC_NAME_ID if no id.
+ * @param   pszName     The resource name. NULL if no name.
+ * @param   idLang      The language id.
+ * @param   AddrRsrc    The address value for the resource.
+ * @param   cbRsrc      The size of the resource.
+ * @param   pvUser      The user parameter specified to kLdrModEnumDbgInfo.
+ */
+typedef int FNKLDRENUMRSRC(PKLDRMOD pMod, KU32 idType, const char *pszType, KU32 idName, const char *pszName,
+                           KU32 idLang, KLDRADDR AddrRsrc, KLDRSIZE cbRsrc, void *pvUser);
+/** Pointer to a resource enumerator callback. */
+typedef FNKLDRENUMRSRC *PFNKLDRENUMRSRC;
+
+/** NIL resource name ID. */
+#define NIL_KLDRMOD_RSRC_NAME_ID    ( ~(KU32)0 )
+/** NIL resource type ID. */
+#define NIL_KLDRMOD_RSRC_TYPE_ID    ( ~(KU32)0 )
+/** @name Language ID
+ *
+ * Except for the special IDs #defined here, the values are considered
+ * format specific for now since it's only used by the PE resources.
+ *
+ * @{ */
+/** NIL language ID. */
+#define NIL_KLDR_LANG_ID                ( ~(KU32)0 )
+/** Special language id value for matching any language. */
+#define KLDR_LANG_ID_ANY                ( ~(KU32)1 )
+/** Special language id value indicating language neutral. */
+#define KLDR_LANG_ID_NEUTRAL            ( ~(KU32)2 )
+/** Special language id value indicating user default language. */
+#define KLDR_LANG_ID_USER_DEFAULT       ( ~(KU32)3 )
+/** Special language id value indicating system default language. */
+#define KLDR_LANG_ID_SYS_DEFAULT        ( ~(KU32)4 )
+/** Special language id value indicating default custom locale. */
+#define KLDR_LANG_ID_CUSTOM_DEFAULT     ( ~(KU32)5 )
+/** Special language id value indicating unspecified custom locale. */
+#define KLDR_LANG_ID_CUSTOM_UNSPECIFIED ( ~(KU32)6 )
+/** Special language id value indicating default custom MUI locale. */
+#define KLDR_LANG_ID_UI_CUSTOM_DEFAULT  ( ~(KU32)7 )
+/** @} */
+
+/** @name KLDRMOD_OPEN_FLAGS_XXX - Module Open Flags
+ * @{ */
+/** Indicates that we won't be loading the module, we're just getting
+ *  information (like symbols and line numbers) out of it. */
+#define KLDRMOD_OPEN_FLAGS_FOR_INFO                 K_BIT32(0)
+/** Native: Non-stub kLdrModCallInit & kLdrModCallTerm. */
+#define KLDRMOD_OPEN_FLAGS_NATIVE_ALLOW_INIT_TERM   K_BIT32(1)
+/** Mask of valid flags. */
+#define KLDRMOD_OPEN_FLAGS_VALID_MASK               KU32_C(0x00000003)
+/** @} */
+
+int     kLdrModOpen(const char *pszFilename, KU32 fFlags, KCPUARCH enmCpuArch, PPKLDRMOD ppMod);
+int     kLdrModOpenFromRdr(PKRDR pRdr, KU32 fFlags, KCPUARCH enmCpuArch, PPKLDRMOD ppMod);
+int     kLdrModOpenNative(const char *pszFilename, KU32 fFlags, PPKLDRMOD ppMod);
+int     kLdrModOpenNativeByHandle(KUPTR uHandle, KU32 fFlags, PPKLDRMOD ppMod);
+int     kLdrModClose(PKLDRMOD pMod);
+
+int     kLdrModQuerySymbol(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 iSymbol,
+                           const char *pchSymbol, KSIZE cchSymbol, const char *pszVersion,
+                           PFNKLDRMODGETIMPORT pfnGetForwarder, void *pvUser, PKLDRADDR puValue, KU32 *pfKind);
+int     kLdrModEnumSymbols(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress,
+                           KU32 fFlags, PFNKLDRMODENUMSYMS pfnCallback, void *pvUser);
+int     kLdrModGetImport(PKLDRMOD pMod, const void *pvBits, KU32 iImport, char *pszName, KSIZE cchName);
+KI32    kLdrModNumberOfImports(PKLDRMOD pMod, const void *pvBits);
+int     kLdrModCanExecuteOn(PKLDRMOD pMod, const void *pvBits, KCPUARCH enmArch, KCPU enmCpu);
+int     kLdrModGetStackInfo(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRSTACKINFO pStackInfo);
+int     kLdrModQueryMainEntrypoint(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRADDR pMainEPAddress);
+int     kLdrModQueryImageUuid(PKLDRMOD pMod, const void *pvBits, void *pvUuid, KSIZE cbUuid);
+int     kLdrModQueryResource(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 idType, const char *pszType,
+                             KU32 idName, const char *pszName, KU32 idLang, PKLDRADDR pAddrRsrc, KSIZE *pcbRsrc);
+int     kLdrModEnumResources(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 idType, const char *pszType,
+                             KU32 idName, const char *pszName, KU32 idLang, PFNKLDRENUMRSRC pfnCallback, void *pvUser);
+int     kLdrModEnumDbgInfo(PKLDRMOD pMod, const void *pvBits, PFNKLDRENUMDBG pfnCallback, void *pvUser);
+int     kLdrModHasDbgInfo(PKLDRMOD pMod, const void *pvBits);
+int     kLdrModMostlyDone(PKLDRMOD pMod);
+
+
+/** @name Operations On The Internally Managed Mapping
+ * @{ */
+int     kLdrModMap(PKLDRMOD pMod);
+int     kLdrModUnmap(PKLDRMOD pMod);
+int     kLdrModReload(PKLDRMOD pMod);
+int     kLdrModFixupMapping(PKLDRMOD pMod, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+/** @} */
+
+/** @name Operations On The Externally Managed Mappings
+ * @{ */
+KLDRADDR kLdrModSize(PKLDRMOD pMod);
+int     kLdrModGetBits(PKLDRMOD pMod, void *pvBits, KLDRADDR BaseAddress, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+int     kLdrModRelocateBits(PKLDRMOD pMod, void *pvBits, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress,
+                            PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+/** @} */
+
+/** @name Operations on both internally and externally managed mappings.
+ * @{ */
+/** Special pvMapping value to pass to kLdrModAllocTLS,
+ * kLdrModFreeTLS, kLdrModCallInit, kLdrModCallTerm, and kLdrModCallThread that
+ * specifies the internal mapping (kLdrModMap). */
+#define KLDRMOD_INT_MAP    ((void *)~(KUPTR)0)
+int     kLdrModAllocTLS(PKLDRMOD pMod, void *pvMapping);
+void    kLdrModFreeTLS(PKLDRMOD pMod, void *pvMapping);
+int     kLdrModCallInit(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle);
+int     kLdrModCallTerm(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle);
+int     kLdrModCallThread(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle, unsigned fAttachingOrDetaching);
+/** @} */
+
+
+/**
+ * The loader module operation.
+ */
+typedef struct KLDRMODOPS
+{
+    /** The name of this module interpreter. */
+    const char         *pszName;
+    /** Pointer to the next module interpreter. */
+    PCKLDRMODOPS        pNext;
+
+    /**
+     * Create a loader module instance interpreting the executable image found
+     * in the specified file provider instance.
+     *
+     * @returns 0 on success and *ppMod pointing to a module instance.
+     *          On failure, a non-zero OS specific error code is returned.
+     * @param   pOps            Pointer to the registered method table.
+     * @param   pRdr            The file provider instance to use.
+     * @param   fFlags          Flags, MBZ.
+     * @param   enmCpuArch      The desired CPU architecture. KCPUARCH_UNKNOWN means
+     *                          anything goes, but with a preference for the current
+     *                          host architecture.
+     * @param   offNewHdr       The offset of the new header in MZ files. -1 if not found.
+     * @param   ppMod           Where to store the module instance pointer.
+     */
+    int (* pfnCreate)(PCKLDRMODOPS pOps, PKRDR pRdr, KU32 fFlags, KCPUARCH enmCpuArch, KLDRFOFF offNewHdr, PPKLDRMOD ppMod);
+    /**
+     * Destroys an loader module instance.
+     *
+     * The caller is responsible for calling kLdrModUnmap() and kLdrFreeTLS() first.
+     *
+     * @returns 0 on success, non-zero on failure. The module instance state
+     *          is unknown on failure, it's best not to touch it.
+     * @param   pMod    The module.
+     */
+    int (* pfnDestroy)(PKLDRMOD pMod);
+
+    /** @copydoc kLdrModQuerySymbol */
+    int (* pfnQuerySymbol)(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 iSymbol,
+                           const char *pchSymbol, KSIZE cchSymbol, const char *pszVersion,
+                           PFNKLDRMODGETIMPORT pfnGetForwarder, void *pvUser, PKLDRADDR puValue, KU32 *pfKind);
+    /** @copydoc kLdrModEnumSymbols */
+    int (* pfnEnumSymbols)(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 fFlags,
+                           PFNKLDRMODENUMSYMS pfnCallback, void *pvUser);
+    /** @copydoc kLdrModGetImport */
+    int (* pfnGetImport)(PKLDRMOD pMod, const void *pvBits, KU32 iImport, char *pszName, KSIZE cchName);
+    /** @copydoc kLdrModNumberOfImports */
+    KI32 (* pfnNumberOfImports)(PKLDRMOD pMod, const void *pvBits);
+    /** @copydoc kLdrModCanExecuteOn */
+    int (* pfnCanExecuteOn)(PKLDRMOD pMod, const void *pvBits, KCPUARCH enmArch, KCPU enmCpu);
+    /** @copydoc kLdrModGetStackInfo */
+    int (* pfnGetStackInfo)(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRSTACKINFO pStackInfo);
+    /** @copydoc kLdrModQueryMainEntrypoint */
+    int (* pfnQueryMainEntrypoint)(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRADDR pMainEPAddress);
+    /** @copydoc kLdrModQueryImageUuid  */
+    int (* pfnQueryImageUuid)(PKLDRMOD pMod, const void *pvBits, void *pvUuid, KSIZE pcbUuid);
+    /** @copydoc kLdrModQueryResource */
+    int (* pfnQueryResource)(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 idType, const char *pszType,
+                             KU32 idName, const char *pszName, KU32 idLang, PKLDRADDR pAddrRsrc, KSIZE *pcbRsrc);
+    /** @copydoc kLdrModEnumResources */
+    int (* pfnEnumResources)(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 idType, const char *pszType,
+                             KU32 idName, const char *pszName, KU32 idLang, PFNKLDRENUMRSRC pfnCallback, void *pvUser);
+    /** @copydoc kLdrModEnumDbgInfo */
+    int (* pfnEnumDbgInfo)(PKLDRMOD pMod, const void *pvBits, PFNKLDRENUMDBG pfnCallback, void *pvUser);
+    /** @copydoc kLdrModHasDbgInfo */
+    int (* pfnHasDbgInfo)(PKLDRMOD pMod, const void *pvBits);
+    /** @copydoc kLdrModMap */
+    int (* pfnMap)(PKLDRMOD pMod);
+    /** @copydoc kLdrModUnmap */
+    int (* pfnUnmap)(PKLDRMOD pMod);
+    /** @copydoc kLdrModAllocTLS */
+    int (* pfnAllocTLS)(PKLDRMOD pMod, void *pvMapping);
+    /** @copydoc kLdrModFreeTLS */
+    void (*pfnFreeTLS)(PKLDRMOD pMod, void *pvMapping);
+    /** @copydoc kLdrModReload */
+    int (* pfnReload)(PKLDRMOD pMod);
+    /** @copydoc kLdrModFixupMapping */
+    int (* pfnFixupMapping)(PKLDRMOD pMod, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+    /** @copydoc kLdrModCallInit */
+    int (* pfnCallInit)(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle);
+    /** @copydoc kLdrModCallTerm */
+    int (* pfnCallTerm)(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle);
+    /** @copydoc kLdrModCallThread */
+    int (* pfnCallThread)(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle, unsigned fAttachingOrDetaching);
+    /** @copydoc kLdrModSize */
+    KLDRADDR (* pfnSize)(PKLDRMOD pMod);
+    /** @copydoc kLdrModGetBits */
+    int (* pfnGetBits)(PKLDRMOD pMod, void *pvBits, KLDRADDR BaseAddress, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+    /** @copydoc kLdrModRelocateBits */
+    int (* pfnRelocateBits)(PKLDRMOD pMod, void *pvBits, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress,
+                            PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+    /** @copydoc kLdrModMostlyDone */
+    int (* pfnMostlyDone)(PKLDRMOD pMod);
+    /** Dummy which should be assigned a non-zero value. */
+    KU32 uEndOfStructure;
+} KLDRMODOPS;
+
+
+/** @} */
+
+
+
+
+/** @defgroup grp_kLdrDyld   kLdrDyld - The dynamic loader
+ * @{ */
+
+/** The handle to a dynamic loader module. */
+typedef struct KLDRDYLDMOD *HKLDRMOD;
+/** Pointer to the handle to a dynamic loader module. */
+typedef HKLDRMOD *PHKLDRMOD;
+/** NIL handle value. */
+#define NIL_HKLDRMOD    ((HKLDRMOD)0)
+
+
+/**
+ * File search method.
+ *
+ * In addition to it's own way of finding files, kLdr emulates
+ * the methods employed by the most popular systems.
+ */
+typedef enum KLDRDYLDSEARCH
+{
+    /** The usual invalid file search method. */
+    KLDRDYLD_SEARCH_INVALID = 0,
+    /** Uses the kLdr file search method.
+     * @todo invent me. */
+    KLDRDYLD_SEARCH_KLDR,
+    /** Use the emulation closest to the host system. */
+    KLDRDYLD_SEARCH_HOST,
+    /** Emulate the OS/2 file search method.
+     * On non-OS/2 systems, BEGINLIBPATH, LIBPATH, ENDLIBPATH and LIBPATHSTRICT are
+     * taken form the environment. */
+    KLDRDYLD_SEARCH_OS2,
+    /** Emulate the standard window file search method. */
+    KLDRDYLD_SEARCH_WINDOWS,
+    /** Emulate the alternative window file search method. */
+    KLDRDYLD_SEARCH_WINDOWS_ALTERED,
+    /** Emulate the most common UNIX file search method. */
+    KLDRDYLD_SEARCH_UNIX_COMMON,
+    /** End of the valid file search method values. */
+    KLDRDYLD_SEARCH_END,
+    /** Hack to blow the type up to 32-bit. */
+    KLDRDYLD_SEARCH_32BIT_HACK = 0x7fffffff
+} KLDRDYLDSEARCH;
+
+/** @name kLdrDyldLoad and kLdrDyldFindByName flags.
+ * @{ */
+/** The symbols in the module should be loaded into the global unix namespace.
+ * If not specified, the symbols are local and can only be referenced directly. */
+#define KLDRYDLD_LOAD_FLAGS_GLOBAL_SYMBOLS      0x00000001
+/** The symbols in the module should be loaded into the global unix namespace and
+ * it's symbols should take precedence over all currently loaded modules.
+ * This implies KLDRYDLD_LOAD_FLAGS_GLOBAL_SYMBOLS. */
+#define KLDRYDLD_LOAD_FLAGS_DEEP_SYMBOLS        0x00000002
+/** The module shouldn't be found by a global module search.
+ * If not specified, the module can be found by unspecified module searches,
+ * typical used when loading import/dep modules. */
+#define KLDRYDLD_LOAD_FLAGS_SPECIFIC_MODULE     0x00000004
+/** Do a recursive initialization calls instead of defering them to the outermost call. */
+#define KLDRDYLD_LOAD_FLAGS_RECURSIVE_INIT      0x00000008
+/** We're loading the executable module.
+ * @internal */
+#define KLDRDYLD_LOAD_FLAGS_EXECUTABLE          0x40000000
+/** @} */
+
+
+int     kLdrDyldLoad(const char *pszDll, const char *pszPrefix, const char *pszSuffix, KLDRDYLDSEARCH enmSearch,
+                     unsigned fFlags, PHKLDRMOD phMod, char *pszErr, KSIZE cchErr);
+int     kLdrDyldUnload(HKLDRMOD hMod);
+int     kLdrDyldFindByName(const char *pszDll, const char *pszPrefix, const char *pszSuffix, KLDRDYLDSEARCH enmSearch,
+                           unsigned fFlags, PHKLDRMOD phMod);
+int     kLdrDyldFindByAddress(KUPTR Address, PHKLDRMOD phMod, KU32 *piSegment, KUPTR *poffSegment);
+int     kLdrDyldGetName(HKLDRMOD hMod, char *pszName, KSIZE cchName);
+int     kLdrDyldGetFilename(HKLDRMOD hMod, char *pszFilename, KSIZE cchFilename);
+int     kLdrDyldQuerySymbol(HKLDRMOD hMod, KU32 uSymbolOrdinal, const char *pszSymbolName,
+                            const char *pszSymbolVersion, KUPTR *pValue, KU32 *pfKind);
+int     kLdrDyldQueryResource(HKLDRMOD hMod, KU32 idType, const char *pszType, KU32 idName,
+                              const char *pszName, KU32 idLang, void **pvRsrc, KSIZE *pcbRsrc);
+int     kLdrDyldEnumResources(HKLDRMOD hMod, KU32 idType, const char *pszType, KU32 idName,
+                              const char *pszName, KU32 idLang, PFNKLDRENUMRSRC pfnCallback, void *pvUser);
+
+
+/** @name OS/2 like API
+ * @{ */
+#if defined(__OS2__)
+# define KLDROS2API _System
+#else
+# define KLDROS2API
+#endif
+int     kLdrDosLoadModule(char *pszObject, KSIZE cbObject, const char *pszModule, PHKLDRMOD phMod);
+int     kLdrDosFreeModule(HKLDRMOD hMod);
+int     kLdrDosQueryModuleHandle(const char *pszModname, PHKLDRMOD phMod);
+int     kLdrDosQueryModuleName(HKLDRMOD hMod, KSIZE cchName, char *pszName);
+int     kLdrDosQueryProcAddr(HKLDRMOD hMod, KU32 iOrdinal, const char *pszProcName, void **ppvProcAddr);
+int     kLdrDosQueryProcType(HKLDRMOD hMod, KU32 iOrdinal, const char *pszProcName, KU32 *pfProcType);
+int     kLdrDosQueryModFromEIP(PHKLDRMOD phMod, KU32 *piObject, KSIZE cbName, char *pszName, KUPTR *poffObject, KUPTR ulEIP);
+int     kLdrDosReplaceModule(const char *pszOldModule, const char *pszNewModule, const char *pszBackupModule);
+int     kLdrDosGetResource(HKLDRMOD hMod, KU32 idType, KU32 idName, void **pvResAddr);
+int     kLdrDosQueryResourceSize(HKLDRMOD hMod, KU32 idType, KU32 idName, KU32 *pcb);
+int     kLdrDosFreeResource(void *pvResAddr);
+/** @} */
+
+/** @name POSIX like API
+ * @{ */
+HKLDRMOD    kLdrDlOpen(const char *pszLibrary, int fFlags);
+const char *kLdrDlError(void);
+void *      kLdrDlSym(HKLDRMOD hMod, const char *pszSymbol);
+int         kLdrDlClose(HKLDRMOD hMod);
+/** @todo GNU extensions */
+/** @} */
+
+/** @name Win32 like API
+ * @{ */
+#if defined(_MSC_VER)
+# define KLDRWINAPI __stdcall
+#else
+# define KLDRWINAPI
+#endif
+HKLDRMOD KLDRWINAPI kLdrWLoadLibrary(const char *pszFilename);
+HKLDRMOD KLDRWINAPI kLdrWLoadLibraryEx(const char *pszFilename, void *hFileReserved, KU32 fFlags);
+KU32     KLDRWINAPI kLdrWGetModuleFileName(HKLDRMOD hMod, char *pszModName, KSIZE cchModName);
+HKLDRMOD KLDRWINAPI kLdrWGetModuleHandle(const char *pszFilename);
+int      KLDRWINAPI kLdrWGetModuleHandleEx(KU32 fFlags, const char *pszFilename, HKLDRMOD hMod);
+void *   KLDRWINAPI kLdrWGetProcAddress(HKLDRMOD hMod, const char *pszProcName);
+KU32     KLDRWINAPI kLdrWGetDllDirectory(KSIZE cchDir, char *pszDir);
+int      KLDRWINAPI kLdrWSetDllDirectory(const char *pszDir);
+int      KLDRWINAPI kLdrWFreeLibrary(HKLDRMOD hMod);
+int      KLDRWINAPI kLdrWDisableThreadLibraryCalls(HKLDRMOD hMod);
+
+/** The handle to a resource that's been found. */
+typedef struct KLDRWRSRCFOUND *HKLDRWRSRCFOUND;
+/** The handle to a loaded resource. */
+typedef struct KLDRWRSRCLOADED *HKLDRWRSRCLOADED;
+HKLDRWRSRCFOUND  KLDRWINAPI kLdrWFindResource(HKLDRMOD hMod, const char *pszType, const char *pszName);
+HKLDRWRSRCFOUND  KLDRWINAPI kLdrWFindResourceEx(HKLDRMOD hMod, const char *pszType, const char *pszName, KU16 idLang);
+KU32             KLDRWINAPI kLdrWSizeofResource(HKLDRMOD hMod, HKLDRWRSRCFOUND hFoundRsrc);
+HKLDRWRSRCLOADED KLDRWINAPI kLdrWLoadResource(HKLDRMOD hMod, HKLDRWRSRCFOUND hFoundRsrc);
+void    *KLDRWINAPI kLdrWLockResource(HKLDRMOD hMod, HKLDRWRSRCLOADED hLoadedRsrc);
+int      KLDRWINAPI kLdrWFreeResource(HKLDRMOD hMod, HKLDRWRSRCLOADED hLoadedRsrc);
+
+typedef int (KLDRWINAPI *PFNKLDRWENUMRESTYPE)(HKLDRMOD hMod, const char *pszType, KUPTR uUser);
+int      KLDRWINAPI kLdrWEnumResourceTypes(HKLDRMOD hMod, PFNKLDRWENUMRESTYPE pfnEnum, KUPTR uUser);
+int      KLDRWINAPI kLdrWEnumResourceTypesEx(HKLDRMOD hMod, PFNKLDRWENUMRESTYPE pfnEnum, KUPTR uUser, KU32 fFlags, KU16 idLang);
+
+typedef int (KLDRWINAPI *PFNKLDRWENUMRESNAME)(HKLDRMOD hMod, const char *pszType, char *pszName, KUPTR uUser);
+int      KLDRWINAPI kLdrWEnumResourceNames(HKLDRMOD hMod, const char *pszType, PFNKLDRWENUMRESNAME pfnEnum, KUPTR uUser);
+int      KLDRWINAPI kLdrWEnumResourceNamesEx(HKLDRMOD hMod, const char *pszType, PFNKLDRWENUMRESNAME pfnEnum, KUPTR uUser, KU32 fFlags, KU16 idLang);
+
+typedef int (KLDRWINAPI *PFNKLDRWENUMRESLANG)(HKLDRMOD hMod, const char *pszType, const char *pszName, KU16 idLang, KUPTR uUser);
+int      KLDRWINAPI kLdrWEnumResourceLanguages(HKLDRMOD hMod, const char *pszType, const char *pszName, PFNKLDRWENUMRESLANG pfnEnum, KUPTR uUser);
+int      KLDRWINAPI kLdrWEnumResourceLanguagesEx(HKLDRMOD hMod, const char *pszType, const char *pszName,
+                                                 PFNKLDRWENUMRESLANG pfnEnum, KUPTR uUser, KU32 fFlags, KU16 idLang);
+/** @} */
+
+
+/** @name Process Bootstrapping
+ * @{ */
+
+/**
+ * Argument package from the stub.
+ */
+typedef struct KLDREXEARGS
+{
+    /** Load & search flags, some which will become defaults. */
+    KU32            fFlags;
+    /** The default search method. */
+    KLDRDYLDSEARCH  enmSearch;
+    /** The executable file that the stub is supposed to load. */
+    char            szExecutable[260];
+    /** The default prefix used when searching for DLLs. */
+    char            szDefPrefix[16];
+    /** The default suffix used when searching for DLLs. */
+    char            szDefSuffix[16];
+    /** The LD_LIBRARY_PATH prefix for the process.. */
+    char            szLibPath[4096 - sizeof(KU32) - sizeof(KLDRDYLDSEARCH) - 16 - 16 - 260];
+} KLDREXEARGS, *PKLDREXEARGS;
+/** Pointer to a const argument package from the stub. */
+typedef const KLDREXEARGS *PCKLDREXEARGS;
+
+void kLdrLoadExe(PCKLDREXEARGS pArgs, void *pvOS); /** @todo fix this mess... */
+void kLdrDyldLoadExe(PCKLDREXEARGS pArgs, void *pvOS);
+/** @} */
+
+/** @} */
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kLdrFmts/lx.h b/src/lib/kStuff/include/k/kLdrFmts/lx.h
new file mode 100644
index 0000000..fc1d1e2
--- /dev/null
+++ b/src/lib/kStuff/include/k/kLdrFmts/lx.h
@@ -0,0 +1,485 @@
+/* $Id $ */
+/** @file
+ * LX structures, types and defines.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kLdrFmts_lx_h___
+#define ___k_kLdrFmts_lx_h___
+
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+
+
+#ifndef IMAGE_OS2_SIGNATURE_LX
+/** LX signature ("LX") */
+# define IMAGE_LX_SIGNATURE  K_LE2H_U16('L' | ('X' << 8))
+#endif
+
+#pragma pack(1)
+
+/**
+ * Linear eXecutable header.
+ * This structure is exactly 196 bytes long.
+ */
+struct e32_exe
+{
+    KU8                 e32_magic[2];
+    KU8                 e32_border;
+    KU8                 e32_worder;
+    KU32                e32_level;
+    KU16                e32_cpu;
+    KU16                e32_os;
+    KU32                e32_ver;
+    KU32                e32_mflags;
+    KU32                e32_mpages;
+    KU32                e32_startobj;
+    KU32                e32_eip;
+    KU32                e32_stackobj;
+    KU32                e32_esp;
+    KU32                e32_pagesize;
+    KU32                e32_pageshift;
+    /** The size of the fixup section.
+     * The fixup section consists of the fixup page table, the fixup record table,
+     * the import module table, and the import procedure name table.
+     */
+    KU32                e32_fixupsize;
+    KU32                e32_fixupsum;
+    /** The size of the resident loader section.
+     * This includes the object table, the object page map table, the resource table, the resident name table,
+     * the entry table, the module format directives table, and the page checksum table (?). */
+    KU32                e32_ldrsize;
+    /** The checksum of the loader section. 0 if not calculated. */
+    KU32                e32_ldrsum;
+    /** The offset of the object table relative to this structure. */
+    KU32                e32_objtab;
+    /** Count of objects. */
+    KU32                e32_objcnt;
+    /** The offset of the object page map table relative to this structure. */
+    KU32                e32_objmap;
+    /** The offset of the object iterated pages (whatever this is used for) relative to the start of the file. */
+    KU32                e32_itermap;
+    /** The offset of the resource table relative to this structure. */
+    KU32                e32_rsrctab;
+    /** The number of entries in the resource table. */
+    KU32                e32_rsrccnt;
+    /** The offset of the resident name table relative to this structure. */
+    KU32                e32_restab;
+    /** The offset of the entry (export) table relative to this structure. */
+    KU32                e32_enttab;
+    /** The offset of the module format directives table relative to this structure. */
+    KU32                e32_dirtab;
+    /** The number of entries in the module format directives table. */
+    KU32                e32_dircnt;
+    /** The offset of the fixup page table relative to this structure. */
+    KU32                e32_fpagetab;
+    /** The offset of the fixup record table relative to this structure. */
+    KU32                e32_frectab;
+    /** The offset of the import module name table relative to this structure. */
+    KU32                e32_impmod;
+    /** The number of entries in the import module name table. */
+    KU32                e32_impmodcnt;
+    /** The offset of the import procedure name table relative to this structure. */
+    KU32                e32_impproc;
+    /** The offset of the page checksum table relative to this structure. */
+    KU32                e32_pagesum;
+    /** The offset of the data pages relative to the start of the file. */
+    KU32                e32_datapage;
+    /** The number of preload pages (ignored). */
+    KU32                e32_preload;
+    /** The offset of the non-resident name table relative to the start of the file. */
+    KU32                e32_nrestab;
+    /** The size of the non-resident name table. */
+    KU32                e32_cbnrestab;
+    KU32                e32_nressum;
+    KU32                e32_autodata;
+    KU32                e32_debuginfo;
+    KU32                e32_debuglen;
+    KU32                e32_instpreload;
+    KU32                e32_instdemand;
+    KU32                e32_heapsize;
+    KU32                e32_stacksize;
+    KU8                 e32_res3[20];
+};
+
+/** e32_magic[0] */
+#define E32MAGIC1       'L'
+/** e32_magic[1] */
+#define E32MAGIC2       'X'
+/** MAKEWORD(e32_magic[0], e32_magic[1]) */
+#define E32MAGIC        0x584c
+/** e32_border - little endian */
+#define E32LEBO         0
+/** e32_border - big endian */
+#define E32BEBO         1
+/** e32_worder - little endian */
+#define E32LEWO         0
+/** e32_worder - big endian */
+#define E32BEWO         1
+/** e32_level */
+#define E32LEVEL        KU32_C(0)
+/** e32_cpu - 80286 */
+#define E32CPU286       1
+/** e32_cpu - 80386 */
+#define E32CPU386       2
+/** e32_cpu - 80486 */
+#define E32CPU486       3
+/** e32_pagesize */
+#define OBJPAGELEN      KU32_C(0x1000)
+
+
+/** @name e32_mflags
+ * @{ */
+/** App Type: Fullscreen only. */
+#define E32NOPMW         KU32_C(0x00000100)
+/** App Type: PM API. */
+#define E32PMAPI         KU32_C(0x00000300)
+/** App Type: PM VIO compatible. */
+#define E32PMW           KU32_C(0x00000200)
+/** Application type mask. */
+#define E32APPMASK       KU32_C(0x00000300)
+/** Executable module. */
+#define E32MODEXE        KU32_C(0x00000000)
+/** Dynamic link library (DLL / library) module. */
+#define E32MODDLL        KU32_C(0x00008000)
+/** Protected memory DLL. */
+#define E32PROTDLL       KU32_C(0x00010000)
+/** Physical Device Driver. */
+#define E32MODPDEV       KU32_C(0x00020000)
+/** Virtual Device Driver. */
+#define E32MODVDEV       KU32_C(0x00028000)
+/** Device driver */
+#define E32DEVICE        E32MODPDEV
+/** Dynamic link library (DLL / library) module. */
+#define E32NOTP          E32MODDLL
+/** Protected memory DLL. */
+#define E32MODPROTDLL    (E32MODDLL | E32PROTDLL)
+/** Module Type mask. */
+#define E32MODMASK       KU32_C(0x00038000)
+/** Not loadable (linker error). */
+#define E32NOLOAD        KU32_C(0x00002000)
+/** No internal fixups. */
+#define E32NOINTFIX      KU32_C(0x00000010)
+/** No external fixups (i.e. imports). */
+#define E32NOEXTFIX      KU32_C(0x00000020)
+/** System DLL, no internal fixups. */
+#define E32SYSDLL        KU32_C(0x00000008)
+/** Global (set) or per instance (cleared) library initialization. */
+#define E32LIBINIT       KU32_C(0x00000004)
+/** Global (set) or per instance (cleared) library termination. */
+#define E32LIBTERM       KU32_C(0x40000000)
+/** Indicates when set in an executable that the process isn't SMP safe. */
+#define E32NOTMPSAFE     KU32_C(0x00080000)
+/** @} */
+
+/** @name Relocations (aka Fixups).
+ * @{ */
+typedef union _offset
+{
+    KU16                offset16;
+    KU32                offset32;
+} offset;
+
+/** A relocation.
+ * @remark this structure isn't very usable since LX relocations comes in too many size variations.
+ */
+struct r32_rlc
+{
+    KU8                 nr_stype;
+    KU8                 nr_flags;
+    KI16                r32_soff;
+    KU16                r32_objmod;
+
+    union targetid
+    {
+        offset          intref;
+        union extfixup
+        {
+            offset      proc;
+            KU32        ord;
+        } extref;
+        struct addfixup
+        {
+            KU16        entry;
+            offset      addval;
+        } addfix;
+    } r32_target;
+    KU16                r32_srccount;
+    KU16                r32_chain;
+};
+
+/** @name Some attempt at size constanstants.
+ * @{
+ */
+#define RINTSIZE16      8
+#define RINTSIZE32      10
+#define RORDSIZE        8
+#define RNAMSIZE16      8
+#define RNAMSIZE32      10
+#define RADDSIZE16      10
+#define RADDSIZE32      12
+/** @} */
+
+/** @name nr_stype (source flags)
+ * @{ */
+#define NRSBYT          0x00
+#define NRSSEG          0x02
+#define NRSPTR          0x03
+#define NRSOFF          0x05
+#define NRPTR48         0x06
+#define NROFF32         0x07
+#define NRSOFF32        0x08
+#define NRSTYP          0x0f
+#define NRSRCMASK       0x0f
+#define NRALIAS         0x10
+#define NRCHAIN         0x20
+/** @} */
+
+/** @name nr_flags (target flags)
+ * @{ */
+#define NRRINT          0x00
+#define NRRORD          0x01
+#define NRRNAM          0x02
+#define NRRENT          0x03
+#define NRRTYP          0x03
+#define NRADD           0x04
+#define NRICHAIN        0x08
+#define NR32BITOFF      0x10
+#define NR32BITADD      0x20
+#define NR16OBJMOD      0x40
+#define NR8BITORD       0x80
+/** @} */
+
+/** @} */
+
+
+/** @name The Object Table (aka segment table)
+ * @{ */
+
+/** The Object Table Entry. */
+struct o32_obj
+{
+    /** The size of the object. */
+    KU32                o32_size;
+    /** The base address of the object. */
+    KU32                o32_base;
+    /** Object flags. */
+    KU32                o32_flags;
+    /** Page map index. */
+    KU32                o32_pagemap;
+    /** Page map size. (doesn't need to be o32_size >> page shift). */
+    KU32                o32_mapsize;
+    /** Reserved */
+    KU32                o32_reserved;
+};
+
+/** @name o32_flags
+ * @{ */
+/** Read access. */
+#define OBJREAD         KU32_C(0x00000001)
+/** Write access. */
+#define OBJWRITE        KU32_C(0x00000002)
+/** Execute access. */
+#define OBJEXEC         KU32_C(0x00000004)
+/** Resource object. */
+#define OBJRSRC         KU32_C(0x00000008)
+/** The object is discarable (i.e. don't swap, just load in pages from the executable).
+ * This overlaps a bit with object type. */
+#define OBJDISCARD      KU32_C(0x00000010)
+/** The object is shared. */
+#define OBJSHARED       KU32_C(0x00000020)
+/** The object has preload pages. */
+#define OBJPRELOAD      KU32_C(0x00000040)
+/** The object has invalid pages. */
+#define OBJINVALID      KU32_C(0x00000080)
+/** Non-permanent, link386 bug. */
+#define LNKNONPERM      KU32_C(0x00000600)
+/** Non-permanent, correct 'value'. */
+#define OBJNONPERM      KU32_C(0x00000000)
+/** Obj Type: The object is permanent and swappable. */
+#define OBJPERM         KU32_C(0x00000100)
+/** Obj Type: The object is permanent and resident (i.e. not swappable). */
+#define OBJRESIDENT     KU32_C(0x00000200)
+/** Obj Type: The object is resident and contigious. */
+#define OBJCONTIG       KU32_C(0x00000300)
+/** Obj Type: The object is permanent and long locable. */
+#define OBJDYNAMIC      KU32_C(0x00000400)
+/** Object type mask. */
+#define OBJTYPEMASK     KU32_C(0x00000700)
+/** x86: The object require an 16:16 alias. */
+#define OBJALIAS16      KU32_C(0x00001000)
+/** x86: Big/Default selector setting, i.e. toggle 32-bit or 16-bit. */
+#define OBJBIGDEF       KU32_C(0x00002000)
+/** x86: conforming selector setting (weird stuff). */
+#define OBJCONFORM      KU32_C(0x00004000)
+/** x86: IOPL. */
+#define OBJIOPL         KU32_C(0x00008000)
+/** @} */
+
+/** A Object Page Map Entry. */
+struct o32_map
+{
+    /** The file offset of the page. */
+    KU32                o32_pagedataoffset;
+    /** The number of bytes of raw page data. */
+    KU16                o32_pagesize;
+    /** Per page flags describing how the page is encoded in the file. */
+    KU16                o32_pageflags;
+};
+
+/** @name o32 o32_pageflags
+ * @{
+ */
+/** Raw page (uncompressed) in the file. */
+#define VALID           KU16_C(0x0000)
+/** RLE encoded page in file. */
+#define ITERDATA        KU16_C(0x0001)
+/** Invalid page, nothing in the file. */
+#define INVALID         KU16_C(0x0002)
+/** Zero page, nothing in file. */
+#define ZEROED          KU16_C(0x0003)
+/** range of pages (what is this?) */
+#define RANGE           KU16_C(0x0004)
+/** Compressed page in file. */
+#define ITERDATA2       KU16_C(0x0005)
+/** @} */
+
+
+/** Iteration Record format (RLE compressed page). */
+struct LX_Iter
+{
+    /** Number of iterations. */
+    KU16                LX_nIter;
+    /** The number of bytes that's being iterated. */
+    KU16                LX_nBytes;
+    /** The bytes. */
+    KU8                 LX_Iterdata;
+};
+
+/** @} */
+
+
+/** A Resource Table Entry */
+struct rsrc32
+{
+    /** Resource Type. */
+    KU16                type;
+    /** Resource ID. */
+    KU16                name;
+    /** Resource size in bytes. */
+    KU32                cb;
+    /** The index of the object containing the resource. */
+    KU16                obj;
+    /** Offset of the resource that within the object. */
+    KU32                offset;
+};
+
+
+/** @name The Entry Table (aka Export Table)
+ * @{ */
+
+/** Entry bundle.
+ * Header descripting up to 255 entries that follows immediatly after this structure. */
+struct b32_bundle
+{
+    /** The number of entries. */
+    KU8                 b32_cnt;
+    /** The type of bundle. */
+    KU8                 b32_type;
+    /** The index of the object containing these entry points. */
+    KU16                b32_obj;
+};
+
+/** @name b32_type
+ * @{ */
+/** Empty bundle, filling up unused ranges of ordinals. */
+#define EMPTY           0x00
+/** 16-bit offset entry point. */
+#define ENTRY16         0x01
+/** 16-bit callgate entry point. */
+#define GATE16          0x02
+/** 32-bit offset entry point. */
+#define ENTRY32         0x03
+/** Forwarder entry point. */
+#define ENTRYFWD        0x04
+/** Typing information present indicator. */
+#define TYPEINFO        0x80
+/** @} */
+
+
+/** Entry point. */
+struct e32_entry
+{
+    /** Entry point flags */
+    KU8                 e32_flags;      /* Entry point flags */
+    union entrykind
+    {
+        /** ENTRY16 or ENTRY32. */
+        offset          e32_offset;
+        /** GATE16 */
+        struct callgate
+        {
+            /** Offset into segment. */
+            KU16        offset;
+            /** The callgate selector */
+            KU16        callgate;
+        } e32_callgate;
+        /** ENTRYFWD */
+        struct fwd
+        {
+            /** Module ordinal number (i.e. into the import module table). */
+            KU16        modord;
+            /** Procedure name or ordinal number. */
+            KU32        value;
+        } e32_fwd;
+    } e32_variant;
+};
+
+/** @name e32_flags
+ * @{ */
+/** Exported entry (set) or private entry (clear). */
+#define E32EXPORT       0x01
+/** Uses shared data. */
+#define E32SHARED       0x02
+/** Parameter word count mask. */
+#define E32PARAMS       0xf8
+/** ENTRYFWD: Imported by ordinal (set) or by name (clear). */
+#define FWD_ORDINAL     0x01
+/** @} */
+
+/** @name dunno
+ * @{ */
+#define FIXENT16        3
+#define FIXENT32        5
+#define GATEENT16       5
+#define FWDENT          7
+/** @} */
+
+#pragma pack()
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kLdrFmts/mach-o.h b/src/lib/kStuff/include/k/kLdrFmts/mach-o.h
new file mode 100644
index 0000000..61f908c
--- /dev/null
+++ b/src/lib/kStuff/include/k/kLdrFmts/mach-o.h
@@ -0,0 +1,997 @@
+/* $Id: mach-o.h 63 2013-10-30 02:00:14Z bird $ */
+/** @file
+ * Mach-0 structures, types and defines.
+ */
+
+/*
+ * Copyright (c) 2006-2012 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kLdrFmts_mach_o_h___
+#define ___k_kLdrFmts_mach_o_h___
+
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+
+
+/** @defgroup grp_mach_o    The Mach-O Structures, Types, and Defines.
+ * @{
+ */
+
+
+#ifndef IMAGE_FAT_SIGNATURE
+/** The FAT signature (universal binaries). */
+# define IMAGE_FAT_SIGNATURE            KU32_C(0xcafebabe)
+#endif
+#ifndef IMAGE_FAT_SIGNATURE_OE
+/** The FAT signature (universal binaries), other endian. */
+# define IMAGE_FAT_SIGNATURE_OE         KU32_C(0xbebafeca)
+#endif
+
+/**
+ * The fat header found at the start of universal binaries.
+ * It is followed by \a nfat_arch numbers of \a fat_arch structures.
+ */
+typedef struct fat_header
+{
+    KU32            magic;
+    KU32            nfat_arch;
+} fat_header_t;
+
+/**
+ * Description of fat file item.
+ */
+typedef struct fat_arch
+{
+    KI32            cputype;
+    KI32            cpusubtype;
+    KU32            offset;
+    KU32            size;
+    KU32            align;          /**< Power of 2. */
+} fat_arch_t;
+
+
+
+#ifndef IMAGE_MACHO32_SIGNATURE
+/** The 32-bit Mach-O signature. */
+# define IMAGE_MACHO32_SIGNATURE        KU32_C(0xfeedface)
+#endif
+#ifndef IMAGE_MACHO32_SIGNATURE_OE
+/** The 32-bit Mach-O signature, other endian. */
+# define IMAGE_MACHO32_SIGNATURE_OE     KU32_C(0xcefaedfe)
+#endif
+#define MH_MAGIC    IMAGE_MACHO32_SIGNATURE
+#define MH_CIGAM    IMAGE_MACHO32_SIGNATURE_OE
+
+/**
+ * 32-bit Mach-O header.
+ * This is followed by \a ncmds number of load commands.
+ * @see mach_header_64
+ */
+typedef struct mach_header_32
+{
+    KU32            magic;
+    KI32            cputype;
+    KI32            cpusubtype;
+    KU32            filetype;
+    KU32            ncmds;
+    KU32            sizeofcmds;
+    KU32            flags;
+} mach_header_32_t;
+
+
+
+#ifndef IMAGE_MACHO64_SIGNATURE
+/** The 64-bit Mach-O signature. */
+# define IMAGE_MACHO64_SIGNATURE        KU32_C(0xfeedfacf)
+#endif
+#ifndef IMAGE_MACHO64_SIGNATURE_OE
+/** The 64-bit Mach-O signature, other endian. */
+# define IMAGE_MACHO64_SIGNATURE_OE     KU32_C(0xfefaedfe)
+#endif
+#define MH_MAGIC_64 IMAGE_MACHO64_SIGNATURE
+#define MH_CIGAM_64 IMAGE_MACHO64_SIGNATURE_OE
+
+/**
+ * 64-bit Mach-O header.
+ * This is followed by \a ncmds number of load commands.
+ * @see mach_header
+ */
+typedef struct mach_header_64
+{
+    KU32            magic;
+    KI32            cputype;
+    KI32            cpusubtype;
+    KU32            filetype;
+    KU32            ncmds;
+    KU32            sizeofcmds;
+    KU32            flags;
+    KU32            reserved;       /**< (for proper struct and command alignment I guess) */
+} mach_header_64_t;
+
+
+/** @name File types (mach_header_64::filetype, mach_header_32::filetype)
+ * @{
+ */
+#define MH_OBJECT           KU32_C(1) /**< Object (relocatable). */
+#define MH_EXECUTE          KU32_C(2) /**< Executable (demand paged). */
+#define MH_FVMLIB           KU32_C(3) /**< Fixed VM shared library. */
+#define MH_CORE             KU32_C(4) /**< Core file. */
+#define MH_PRELOAD          KU32_C(5) /**< Preloaded executable. */
+#define MH_DYLIB            KU32_C(6) /**< Dynamically bound shared library. */
+#define MH_DYLINKER         KU32_C(7) /**< Dynamic linker. */
+#define MH_BUNDLE           KU32_C(8) /**< Dymamically bound bundle. */
+#define MH_DYLIB_STUB       KU32_C(9) /**< Shared library stub for static linking. */
+#define MH_DSYM             KU32_C(10)/**< Debug symbols. */
+#define MH_KEXT_BUNDLE      KU32_C(11)/**< Kernel extension (introduced with the AMD64 kernel). */
+
+/** @} */
+
+
+/** @name Mach-O Header flags (mach_header_64::flags, mach_header_32::flags)
+ * @{
+ */
+#define MH_NOUNDEFS                 KU32_C(0x00000001) /**< No undefined symbols. */
+#define MH_INCRLINK                 KU32_C(0x00000002) /**< Partial increment link output. */
+#define MH_DYLDLINK                 KU32_C(0x00000004) /**< Food for the dynamic linker, not for ld. */
+#define MH_BINDATLOAD               KU32_C(0x00000008) /**< Bind all undefined symbols at load time. */
+#define MH_PREBOUND                 KU32_C(0x00000010) /**< Contains prebound undefined symbols. */
+#define MH_SPLIT_SEGS               KU32_C(0x00000020) /**< Read-only and read-write segments are split. */
+#define MH_LAZY_INIT                KU32_C(0x00000040) /**< Obsolete flag for doing lazy init when data is written. */
+#define MH_TWOLEVEL                 KU32_C(0x00000080) /**< Uses two-level name space bindings. */
+#define MH_FORCE_FLAT               KU32_C(0x00000100) /**< Task: The executable forces all images to use flat name space bindings. */
+#define MH_NOMULTIDEFS              KU32_C(0x00000200) /**< No multiple symbol definitions, safe to use two-level namespace hints. */
+#define MH_NOFIXPREBINDING          KU32_C(0x00000400) /**< The dynamic linker should not notify the prebinding agent about this executable. */
+#define MH_PREBINDABLE              KU32_C(0x00000800) /**< Not prebound, but it can be. Invalid if MH_PREBOUND is set. */
+#define MH_ALLMODSBOUND             KU32_C(0x00001000) /**< Binds to all two-level namespace modules of preqs. Requires MH_PREBINDABLE and MH_TWOLEVEL to be set. */
+#define MH_SUBSECTIONS_VIA_SYMBOLS  KU32_C(0x00002000) /**< Safe to divide sections into sub-sections via symbols for dead code stripping. */
+#define MH_CANONICAL                KU32_C(0x00004000) /**< Canonicalized via unprebind. */
+#define MH_WEAK_DEFINES             KU32_C(0x00008000) /**< The (finally) linked image has weak symbols. */
+#define MH_BINDS_TO_WEAK            KU32_C(0x00010000) /**< The (finally) linked image uses weak symbols. */
+#define MH_ALLOW_STACK_EXECUTION    KU32_C(0x00020000) /**< Task: allow stack execution. (MH_EXECUTE only) */
+#define MH_ROOT_SAFE                KU32_C(0x00040000) /**< Binary safe for root execution. */
+#define MH_SETUID_SAFE              KU32_C(0x00080000) /**< Binary safe for set-uid execution. */
+#define MH_NO_REEXPORTED_DYLIBS     KU32_C(0x00100000) /**< No reexported dylibs. */
+#define MH_PIE                      KU32_C(0x00200000) /**< Address space randomization. (MH_EXECUTE only) */
+#define MH_DEAD_STRIPPABLE_DYLIB    KU32_C(0x00400000) /**< Drop dylib dependency if not used. (MH_DYLIB only) */
+#define MH_HAS_TLV_DESCRIPTORS      KU32_C(0x00800000) /**< Has a S_TRHEAD_LOCAL_VARIABLES section.  TLS support. */
+#define MH_NO_HEAP_EXECUTION        KU32_C(0x01000000) /**< Task: no heap execution. (MH_EXECUTE only) */
+#define MH_VALID_FLAGS              KU32_C(0x01ffffff) /**< Mask containing the defined flags. */
+/** @} */
+
+
+/** @name CPU types / bits (mach_header_64::cputype, mach_header_32::cputype, fat_arch::cputype)
+ * @{
+ */
+#define CPU_ARCH_MASK               KI32_C(0xff000000)
+#define CPU_ARCH_ABI64              KI32_C(0x01000000)
+#define CPU_TYPE_ANY                KI32_C(-1)
+#define CPU_TYPE_VAX                KI32_C(1)
+#define CPU_TYPE_MC680x0            KI32_C(6)
+#define CPU_TYPE_X86                KI32_C(7)
+#define CPU_TYPE_I386               CPU_TYPE_X86
+#define CPU_TYPE_X86_64             (CPU_TYPE_X86 | CPU_ARCH_ABI64)
+#define CPU_TYPE_MC98000            KI32_C(10)
+#define CPU_TYPE_HPPA               KI32_C(11)
+#define CPU_TYPE_MC88000            KI32_C(13)
+#define CPU_TYPE_SPARC              KI32_C(14)
+#define CPU_TYPE_I860               KI32_C(15)
+#define CPU_TYPE_POWERPC            KI32_C(18)
+#define CPU_TYPE_POWERPC64          (CPU_TYPE_POWERPC | CPU_ARCH_ABI64)
+/** @} */
+
+
+/** @name CPU subtypes (mach_header_64::cpusubtype, mach_header_32::cpusubtype, fat_arch::cpusubtype)
+ * @{ */
+#define CPU_SUBTYPE_MULTIPLE        KI32_C(-1)
+#define CPU_SUBTYPE_LITTLE_ENDIAN   KI32_C(0)  /**< figure this one out. */
+#define CPU_SUBTYPE_BIG_ENDIAN      KI32_C(1)  /**< ditto */
+
+/* VAX */
+#define CPU_SUBTYPE_VAX_ALL         KI32_C(0)
+#define CPU_SUBTYPE_VAX780          KI32_C(1)
+#define CPU_SUBTYPE_VAX785          KI32_C(2)
+#define CPU_SUBTYPE_VAX750          KI32_C(3)
+#define CPU_SUBTYPE_VAX730          KI32_C(4)
+#define CPU_SUBTYPE_UVAXI           KI32_C(5)
+#define CPU_SUBTYPE_UVAXII          KI32_C(6)
+#define CPU_SUBTYPE_VAX8200         KI32_C(7)
+#define CPU_SUBTYPE_VAX8500         KI32_C(8)
+#define CPU_SUBTYPE_VAX8600         KI32_C(9)
+#define CPU_SUBTYPE_VAX8650         KI32_C(10)
+#define CPU_SUBTYPE_VAX8800         KI32_C(11)
+#define CPU_SUBTYPE_UVAXIII         KI32_C(12)
+
+/* MC680xx */
+#define CPU_SUBTYPE_MC680x0_ALL     KI32_C(1)
+#define CPU_SUBTYPE_MC68030         KI32_C(1)
+#define CPU_SUBTYPE_MC68040         KI32_C(2)
+#define CPU_SUBTYPE_MC68030_ONLY    KI32_C(3)
+
+/* I386 */
+#define CPU_SUBTYPE_INTEL(fam, model)       ( (KI32)(((model) << 4) | (fam)) )
+#define CPU_SUBTYPE_INTEL_FAMILY(subtype)   ( (subtype) & 0xf )
+#define CPU_SUBTYPE_INTEL_MODEL(subtype)    ( (subtype) >> 4 )
+#define CPU_SUBTYPE_INTEL_FAMILY_MAX        0xf
+#define CPU_SUBTYPE_INTEL_MODEL_ALL         0
+
+#define CPU_SUBTYPE_I386_ALL        CPU_SUBTYPE_INTEL(3, 0)
+#define CPU_SUBTYPE_386             CPU_SUBTYPE_INTEL(3, 0)
+#define CPU_SUBTYPE_486             CPU_SUBTYPE_INTEL(4, 0)
+#define CPU_SUBTYPE_486SX           CPU_SUBTYPE_INTEL(4, 8)
+#define CPU_SUBTYPE_586             CPU_SUBTYPE_INTEL(5, 0)
+#define CPU_SUBTYPE_PENT            CPU_SUBTYPE_INTEL(5, 0)
+#define CPU_SUBTYPE_PENTPRO         CPU_SUBTYPE_INTEL(6, 1)
+#define CPU_SUBTYPE_PENTII_M3       CPU_SUBTYPE_INTEL(6, 3)
+#define CPU_SUBTYPE_PENTII_M5       CPU_SUBTYPE_INTEL(6, 5)
+#define CPU_SUBTYPE_CELERON         CPU_SUBTYPE_INTEL(7, 6)
+#define CPU_SUBTYPE_CELERON_MOBILE  CPU_SUBTYPE_INTEL(7, 7)
+#define CPU_SUBTYPE_PENTIUM_3       CPU_SUBTYPE_INTEL(8, 0)
+#define CPU_SUBTYPE_PENTIUM_3_M     CPU_SUBTYPE_INTEL(8, 1)
+#define CPU_SUBTYPE_PENTIUM_3_XEON  CPU_SUBTYPE_INTEL(8, 2)
+#define CPU_SUBTYPE_PENTIUM_M       CPU_SUBTYPE_INTEL(9, 0)
+#define CPU_SUBTYPE_PENTIUM_4       CPU_SUBTYPE_INTEL(10, 0)
+#define CPU_SUBTYPE_PENTIUM_4_M     CPU_SUBTYPE_INTEL(10, 1)
+#define CPU_SUBTYPE_ITANIUM         CPU_SUBTYPE_INTEL(11, 0)
+#define CPU_SUBTYPE_ITANIUM_2       CPU_SUBTYPE_INTEL(11, 1)
+#define CPU_SUBTYPE_XEON            CPU_SUBTYPE_INTEL(12, 0)
+#define CPU_SUBTYPE_XEON_MP         CPU_SUBTYPE_INTEL(12, 1)
+
+/* X86 */
+#define CPU_SUBTYPE_X86_ALL         KI32_C(3) /* CPU_SUBTYPE_I386_ALL */
+#define CPU_SUBTYPE_X86_64_ALL      KI32_C(3) /* CPU_SUBTYPE_I386_ALL */
+#define CPU_SUBTYPE_X86_ARCH1       KI32_C(4) /* CPU_SUBTYPE_I486_ALL */
+
+/* MIPS */
+#define CPU_SUBTYPE_MIPS_ALL        KI32_C(0)
+#define CPU_SUBTYPE_MIPS_R2300      KI32_C(1)
+#define CPU_SUBTYPE_MIPS_R2600      KI32_C(2)
+#define CPU_SUBTYPE_MIPS_R2800      KI32_C(3)
+#define CPU_SUBTYPE_MIPS_R2000a     KI32_C(4)
+#define CPU_SUBTYPE_MIPS_R2000      KI32_C(5)
+#define CPU_SUBTYPE_MIPS_R3000a     KI32_C(6)
+#define CPU_SUBTYPE_MIPS_R3000      KI32_C(7)
+
+/* MC98000 (PowerPC) */
+#define CPU_SUBTYPE_MC98000_ALL     KI32_C(0)
+#define CPU_SUBTYPE_MC98601         KI32_C(1)
+
+/* HP-PA */
+#define CPU_SUBTYPE_HPPA_ALL        KI32_C(0)
+#define CPU_SUBTYPE_HPPA_7100       KI32_C(0)
+#define CPU_SUBTYPE_HPPA_7100LC     KI32_C(1)
+
+/* MC88000 */
+#define CPU_SUBTYPE_MC88000_ALL     KI32_C(0)
+#define CPU_SUBTYPE_MC88100         KI32_C(1)
+#define CPU_SUBTYPE_MC88110         KI32_C(2)
+
+/* SPARC */
+#define CPU_SUBTYPE_SPARC_ALL       KI32_C(0)
+
+/* I860 */
+#define CPU_SUBTYPE_I860_ALL        KI32_C(0)
+#define CPU_SUBTYPE_I860_860        KI32_C(1)
+
+/* PowerPC */
+#define CPU_SUBTYPE_POWERPC_ALL     KI32_C(0)
+#define CPU_SUBTYPE_POWERPC_601     KI32_C(1)
+#define CPU_SUBTYPE_POWERPC_602     KI32_C(2)
+#define CPU_SUBTYPE_POWERPC_603     KI32_C(3)
+#define CPU_SUBTYPE_POWERPC_603e    KI32_C(4)
+#define CPU_SUBTYPE_POWERPC_603ev   KI32_C(5)
+#define CPU_SUBTYPE_POWERPC_604     KI32_C(6)
+#define CPU_SUBTYPE_POWERPC_604e    KI32_C(7)
+#define CPU_SUBTYPE_POWERPC_620     KI32_C(8)
+#define CPU_SUBTYPE_POWERPC_750     KI32_C(9)
+#define CPU_SUBTYPE_POWERPC_7400    KI32_C(10)
+#define CPU_SUBTYPE_POWERPC_7450    KI32_C(11)
+#define CPU_SUBTYPE_POWERPC_Max     KI32_C(10)
+#define CPU_SUBTYPE_POWERPC_SCVger  KI32_C(11)
+#define CPU_SUBTYPE_POWERPC_970     KI32_C(100)
+
+/* Subtype capability / feature bits, added in 10.5. X86 only? */
+#define CPU_SUBTYPE_MASK            KU32_C(0xff000000)
+#define CPU_SUBTYPE_LIB64           KU32_C(0x8000000)
+
+/** @} */
+
+
+
+/** @defgroup grp_macho_o_lc        Load Commands
+ * @{ */
+
+/**
+ * The load command common core structure.
+ *
+ * After the Mach-O header follows an array of variable sized
+ * load command which all has this header in common.
+ */
+typedef struct load_command
+{
+    KU32            cmd;            /**< The load command id. */
+    KU32            cmdsize;        /**< The size of the command (including this header). */
+} load_command_t;
+
+/** @name Load Command IDs (load_command::cmd)
+ * @{
+ */
+/** Flag that when set requires the dynamic linker to fail if it doesn't
+ * grok the command. The dynamic linker will otherwise ignore commands it
+ * doesn't understand. Introduced with Mac OS X 10.1. */
+#define LC_REQ_DYLD         KU32_C(0x80000000)
+
+#define LC_SEGMENT_32       KU32_C(0x01)  /**< Segment to be mapped (32-bit). See segment_command_32. */
+#define LC_SYMTAB           KU32_C(0x02)  /**< 'stab' symbol table. See symtab_command. */
+#define LC_SYMSEG           KU32_C(0x03)  /**< Obsoleted gdb symbol table. */
+#define LC_THREAD           KU32_C(0x04)  /**< Thread. See thread_command. */
+#define LC_UNIXTHREAD       KU32_C(0x05)  /**< Unix thread (includes stack and stuff). See thread_command. */
+#define LC_LOADFVMLIB       KU32_C(0x06)  /**< Load a specified fixed VM shared library  (obsolete?). See fvmlib_command. */
+#define LC_IDFVMLIB         KU32_C(0x07)  /**< Fixed VM shared library id (obsolete?). See fvmlib_command. */
+#define LC_IDENT            KU32_C(0x08)  /**< Identification info (obsolete). See ident_command. */
+#define LC_FVMFILE          KU32_C(0x09)  /**< Fixed VM file inclusion (internal). See fvmfile_command. */
+#define LC_PREPAGE          KU32_C(0x0a)  /**< Prepage command (internal). See ?? */
+#define LC_DYSYMTAB         KU32_C(0x0b)  /**< Symbol table for dynamic linking. See dysymtab_command. */
+#define LC_LOAD_DYLIB       KU32_C(0x0c)  /**< Load a dynamically linked shared library. See dylib_command. */
+#define LC_ID_DYLIB         KU32_C(0x0d)  /**< Dynamically linked share library ident. See dylib_command. */
+#define LC_LOAD_DYLINKER    KU32_C(0x0e)  /**< Load a dynamical link editor. See dylinker_command. */
+#define LC_ID_DYLINKER      KU32_C(0x0f)  /**< Dynamic link editor ident. See dylinker_command. */
+#define LC_PREBOUND_DYLIB   KU32_C(0x10)  /**< Prebound modules for dynamically linking of a shared lib. See prebound_dylib_command. */
+#define LC_ROUTINES         KU32_C(0x11)  /**< Image routines. See routines_command_32. */
+#define LC_SUB_FRAMEWORK    KU32_C(0x12)  /**< Sub framework. See sub_framework_command. */
+#define LC_SUB_UMBRELLA     KU32_C(0x13)  /**< Sub umbrella. See sub_umbrella_command. */
+#define LC_SUB_CLIENT       KU32_C(0x14)  /**< Sub client. See sub_client_command. */
+#define LC_SUB_LIBRARY      KU32_C(0x15)  /**< Sub library. See sub_library_command. */
+#define LC_TWOLEVEL_HINTS   KU32_C(0x16)  /**< Two-level namespace lookup hints. See twolevel_hints_command. */
+#define LC_PREBIND_CKSUM    KU32_C(0x17)  /**< Prebind checksum. See prebind_cksum_command. */
+#define LC_LOAD_WEAK_DYLIB (KU32_C(0x18) | LC_REQ_DYLD) /**< Dylib that can be missing, all symbols weak. See dylib_command. */
+#define LC_SEGMENT_64       KU32_C(0x19)  /**< segment to be mapped (64-bit). See segment_command_32. */
+#define LC_ROUTINES_64      KU32_C(0x1a)  /**< Image routines (64-bit). See routines_command_32. */
+#define LC_UUID             KU32_C(0x1b)  /**< The UUID of the object module. See uuid_command.  */
+#define LC_RPATH           (KU32_C(0x1c) | LC_REQ_DYLD) /**< Runpth additions. See rpath_command. */
+#define LC_CODE_SIGNATURE   KU32_C(0x1d)  /**< Code signature location. See linkedit_data_command. */
+#define LC_SEGMENT_SPLIT_INFO KU32_C(0x1e)/**< Segment split info location. See linkedit_data_command. */
+#define LC_REEXPORT_DYLIB  (KU32_C(0x1f) | LC_REQ_DYLD)/**< Load and re-export the given dylib - DLL forwarding. See dylib_command. */
+#define LC_LAZY_LOAD_DYLIB  KU32_C(0x20)  /**< Delays loading of the given dylib until used. See dylib_command? */
+#define LC_ENCRYPTION_INFO  KU32_C(0x21)  /**< Segment encryption information. See encryption_info_command. */
+#define LC_DYLD_INFO        KU32_C(0x22)  /**< Compressed dylib relocation information, alternative present. See dyld_info_command. */
+#define LC_DYLD_INFO_ONLY  (KU32_C(0x22) | LC_REQ_DYLD) /**< Compressed dylib relocation information, no alternative. See dyld_info_command. */
+#define LC_LOAD_UPWARD_DYLIB KU32_C(0x23) /**< ???? */
+#define LC_VERSION_MIN_MACOSX KU32_C(0x24)   /**< The image requires the given Mac OS X version. See version_min_command. */
+#define LC_VERSION_MIN_IPHONEOS KU32_C(0x25) /**< The image requires the given iOS version. See version_min_command. */
+#define LC_FUNCTION_STARTS  KU32_C(0x26)  /**< Where to find the compress function start addresses. See linkedit_data_command. */
+#define LC_DYLD_ENVIRONMENT KU32_C(0x27)  /**< Environment variable for the dynamic linker. See dylinker_command. */
+#define LC_MAIN            (KU32_C(0x28) | LC_REQ_DYLD) /**< Simpler alternative to LC_UNIXTHREAD. */
+#define LC_DATA_IN_CODE     KU32_C(0x29)  /**< Table of data in the the text section. */
+#define LC_SOURCE_VERSION   KU32_C(0x2a)  /**< Source code revision / version hint. */
+#define LC_DYLIB_CODE_SIGN_DRS KU32_C(0x2b) /**< Code signing designated requirements copied from dylibs prequisites. */
+/** @} */
+
+
+/**
+ * Load Command String.
+ */
+typedef struct lc_str
+{
+    /** Offset of the string relative to the load_command structure.
+     * The string is zero-terminated. the size of the load command
+     * is zero padded up to a multiple of 4 bytes. */
+    KU32            offset;
+} lc_str_t;
+
+
+/**
+ * Segment load command (32-bit).
+ */
+typedef struct segment_command_32
+{
+    KU32            cmd;            /**< LC_SEGMENT */
+    KU32            cmdsize;        /**< sizeof(self) + sections. */
+    char            segname[16];    /**< The segment name. */
+    KU32            vmaddr;         /**< Memory address of this segment. */
+    KU32            vmsize;         /**< Size of this segment. */
+    KU32            fileoff;        /**< The file location of the segment. */
+    KU32            filesize;       /**< The file size of the segment. */
+    KU32            maxprot;        /**< Maximum VM protection. */
+    KU32            initprot;       /**< Initial VM protection. */
+    KU32            nsects;         /**< Number of section desciptors following this structure. */
+    KU32            flags;          /**< Flags (SG_*). */
+} segment_command_32_t;
+
+
+/**
+ * Segment load command (64-bit).
+ * Same as segment_command_32 except 4 members has been blown up to 64-bit.
+ */
+typedef struct segment_command_64
+{
+    KU32            cmd;            /**< LC_SEGMENT */
+    KU32            cmdsize;        /**< sizeof(self) + sections. */
+    char            segname[16];    /**< The segment name. */
+    KU64            vmaddr;         /**< Memory address of this segment. */
+    KU64            vmsize;         /**< Size of this segment. */
+    KU64            fileoff;        /**< The file location of the segment. */
+    KU64            filesize;       /**< The file size of the segment. */
+    KU32            maxprot;        /**< Maximum VM protection. */
+    KU32            initprot;       /**< Initial VM protection. */
+    KU32            nsects;         /**< Number of section desciptors following this structure. */
+    KU32            flags;          /**< Flags (SG_*). */
+} segment_command_64_t;
+
+/** @name Segment flags (segment_command_64::flags, segment_command_32::flags)
+ * @{ */
+/** Map the file bits in the top end of the memory area for the segment
+ * instead of the low end. Intended for stacks in core dumps.
+ * The part of the segment memory not covered by file bits will be zeroed. */
+#define SG_HIGHVM           KU32_C(0x00000001)
+/** This segment is the virtual memory allocated by a fixed VM library.
+ * (Used for overlap checking in the linker.) */
+#define SG_FVMLIB           KU32_C(0x00000002)
+/** No relocations for or symbols that's relocated to in this segment.
+ * The segment can therefore safely be replaced. */
+#define SG_NORELOC          KU32_C(0x00000004)
+/** The segment is protected.
+ * The first page isn't protected if it starts at file offset 0
+ * (so that the mach header and this load command can be easily mapped). */
+#define SG_PROTECTED_VERSION_1 KU32_C(0x00000008)
+/** @} */
+
+
+/**
+ * 32-bit section (part of a segment load command).
+ */
+typedef struct section_32
+{
+    char            sectname[16];   /**< The section name. */
+    char            segname[16];    /**< The name of the segment this section goes into. */
+    KU32            addr;           /**< The memory address of this section. */
+    KU32            size;           /**< The size of this section. */
+    KU32            offset;         /**< The file offset of this section. */
+    KU32            align;          /**< The section alignment (**2). */
+    KU32            reloff;         /**< The file offset of the relocations. */
+    KU32            nreloc;         /**< The number of relocations. */
+    KU32            flags;          /**< The section flags; section type and attribs */
+    KU32            reserved1;      /**< Reserved / offset / index. */
+    KU32            reserved2;      /**< Reserved / count / sizeof. */
+} section_32_t;
+
+/**
+ * 64-bit section (part of a segment load command).
+ */
+typedef struct section_64
+{
+    char            sectname[16];   /**< The section name. */
+    char            segname[16];    /**< The name of the segment this section goes into. */
+    KU64            addr;           /**< The memory address of this section. */
+    KU64            size;           /**< The size of this section. */
+    KU32            offset;         /**< The file offset of this section. */
+    KU32            align;          /**< The section alignment (**2). */
+    KU32            reloff;         /**< The file offset of the relocations. */
+    KU32            nreloc;         /**< The number of relocations. */
+    KU32            flags;          /**< The section flags; section type and attribs */
+    KU32            reserved1;      /**< Reserved / offset / index. */
+    KU32            reserved2;      /**< Reserved / count / sizeof. */
+    KU32            reserved3;      /**< (Just) Reserved. */
+} section_64_t;
+
+/** @name Section flags (section_64::flags, section_32::flags)
+ * @{
+ */
+/** Section type mask. */
+#define SECTION_TYPE                    KU32_C(0x000000ff)
+/** Regular section. */
+#define S_REGULAR                       0x00
+/** Zero filled section. */
+#define S_ZEROFILL                      0x01
+/** C literals. */
+#define S_CSTRING_LITERALS              0x02
+/** 4 byte literals. */
+#define S_4BYTE_LITERALS                0x03
+/** 8 byte literals. */
+#define S_8BYTE_LITERALS                0x04
+/** Pointer to literals. */
+#define S_LITERAL_POINTERS              0x05
+/** Section containing non-lazy symbol pointers.
+ * Reserved1 == start index in the indirect symbol table. */
+#define S_NON_LAZY_SYMBOL_POINTERS      0x06
+/** Section containing lazy symbol pointers.
+ * Reserved1 == start index in the indirect symbol table. */
+#define S_LAZY_SYMBOL_POINTERS          0x07
+/** Section containing symbol stubs.
+ * Reserved2 == stub size. */
+#define S_SYMBOL_STUBS                  0x08
+/** Section containing function pointers for module initialization. . */
+#define S_MOD_INIT_FUNC_POINTERS        0x09
+/** Section containing function pointers for module termination. . */
+#define S_MOD_TERM_FUNC_POINTERS        0x0a
+/** Section containing symbols that are to be coalesced. */
+#define S_COALESCED                     0x0b
+/** Zero filled section that be larger than 4GB. */
+#define S_GB_ZEROFILL                   0x0c
+/** Section containing pairs of function pointers for interposing. */
+#define S_INTERPOSING                   0x0d
+/** 16 byte literals. */
+#define S_16BYTE_LITERALS               0x0e
+/** DTrace byte code / definitions (DOF = DTrace object format). */
+#define S_DTRACE_DOF                    0x0f
+/** Section containing pointers to symbols in lazily loaded dylibs. */
+#define S_LAZY_DYLIB_SYMBOL_POINTERS    0x10
+
+/** Section attribute mask. */
+#define SECTION_ATTRIBUTES          KU32_C(0xffffff00)
+
+/** User settable attribute mask. */
+#define SECTION_ATTRIBUTES_USR      KU32_C(0xff000000)
+/** Pure instruction (code). */
+#define S_ATTR_PURE_INSTRUCTIONS    KU32_C(0x80000000)
+/** ranlib, ignore my symbols... */
+#define S_ATTR_NO_TOC               KU32_C(0x40000000)
+/** May strip static symbols when linking int a MH_DYLDLINK file. */
+#define S_ATTR_STRIP_STATIC_SYMS    KU32_C(0x20000000)
+/** No dead stripping. */
+#define S_ATTR_NO_DEAD_STRIP        KU32_C(0x10000000)
+/** Live support. */
+#define S_ATTR_LIVE_SUPPORT         KU32_C(0x08000000)
+/** Contains self modifying code (generally i386 code stub for dyld). */
+#define S_ATTR_SELF_MODIFYING_CODE  KU32_C(0x04000000)
+/** Debug info (DWARF usually). */
+#define S_ATTR_DEBUG                KU32_C(0x02000000)
+
+/** System settable attribute mask. */
+#define SECTION_ATTRIBUTES_SYS      KU32_C(0x00ffff00)
+/** Contains some instructions (code). */
+#define S_ATTR_SOME_INSTRUCTIONS    KU32_C(0x00000400)
+/** Has external relocations. */
+#define S_ATTR_EXT_RELOC            KU32_C(0x00000200)
+/** Has internal (local) relocations. */
+#define S_ATTR_LOC_RELOC            KU32_C(0x00000100)
+/** @} */
+
+/** @name Known Segment and Section Names.
+ * Some of these implies special linker behaviour.
+ * @{
+ */
+/** Page zero - not-present page for catching invalid access. (MH_EXECUTE typically) */
+#define SEG_PAGEZERO        "__PAGEZERO"
+/** Traditional UNIX text segment.
+ * Defaults to R-X. */
+#define SEG_TEXT            "__TEXT"
+/** The text part of SEG_TEXT. */
+#define SECT_TEXT               "__text"
+/** The fvmlib initialization. */
+#define SECT_FVMLIB_INIT0       "__fvmlib_init0"
+/** The section following the fvmlib initialization. */
+#define SECT_FVMLIB_INIT1       "__fvmlib_init1"
+/** The traditional UNIX data segment. (DGROUP to DOS and OS/2 people.) */
+#define SEG_DATA            "__DATA"
+/** The initialized data section. */
+#define SECT_DATA               "__data"
+/** The uninitialized data section. */
+#define SECT_BSS                "__bss"
+/** The common symbol section. */
+#define SECT_COMMON             "__common"
+/** Objective-C runtime segment. */
+#define SEG_OBJC            "__OBJC"
+/** Objective-C symbol table section. */
+#define SECT_OBJC_SYMBOLS       "__symbol_table"
+/** Objective-C module information section. */
+#define SECT_OBJC_MODULES       "__module_info"
+/** Objective-C string table section. */
+#define SECT_OBJC_STRINGS       "__selector_strs"
+/** Objective-C string table section. */
+#define SECT_OBJC_REFS          "__selector_refs"
+/** Icon segment. */
+#define SEG_ICON            "__ICON"
+/** The icon headers. */
+#define SECT_ICON_HEADER        "__header"
+/** The icons in the TIFF format. */
+#define SECT_ICON_TIFF          "__tiff"
+/** ld -seglinkedit segment containing all the structs create and maintained
+ * by the linker. MH_EXECUTE and MH_FVMLIB only. */
+#define SEG_LINKEDIT        "__LINKEDIT"
+/** The unix stack segment. */
+#define SEG_UNIXSTACK       "__UNIXSTACK"
+/** The segment for the self modifying code for dynamic linking.
+ * Implies RWX permissions. */
+#define SEG_IMPORT          "__IMPORT"
+/** @} */
+
+
+/** @todo fvmlib */
+/** @todo fvmlib_command (LC_IDFVMLIB or LC_LOADFVMLIB) */
+/** @todo dylib */
+/** @todo dylib_command (LC_ID_DYLIB, LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB,
+ *        LC_REEXPORT_DYLIB, LC_LAZY_LOAD_DYLIB) */
+/** @todo sub_framework_command (LC_SUB_FRAMEWORK) */
+/** @todo sub_client_command (LC_SUB_CLIENT) */
+/** @todo sub_umbrella_command (LC_SUB_UMBRELLA) */
+/** @todo sub_library_command (LC_SUB_LIBRARY) */
+/** @todo prebound_dylib_command (LC_PREBOUND_DYLIB) */
+/** @todo dylinker_command (LC_ID_DYLINKER or LC_LOAD_DYLINKER,
+ *        LC_DYLD_ENVIRONMENT) */
+
+/**
+ * Thread command.
+ *
+ * State description of a thread that is to be created. The description
+ * is made up of a number of state structures preceded by a 32-bit flavor
+ * and 32-bit count field stating the kind of stat structure and it's size
+ * in KU32 items respecitvly.
+ *
+ * LC_UNIXTHREAD differs from LC_THREAD in that it implies stack creation
+ * and that it's started with the typical main(int, char **, char **) frame
+ * on the stack.
+ */
+typedef struct thread_command
+{
+    KU32            cmd;        /**< LC_UNIXTHREAD or LC_THREAD. */
+    KU32            cmdsize;    /**< The size of the command (including this header). */
+} thread_command_t;
+
+
+/** @todo routines_command (LC_ROUTINES) */
+/** @todo routines_command_64 (LC_ROUTINES_64) */
+
+
+/**
+ * Symbol table command.
+ * Contains a.out style symbol table with some tricks.
+ */
+typedef struct symtab_command
+{
+    KU32            cmd;        /**< LC_SYMTAB */
+    KU32            cmdsize;    /** sizeof(symtab_command_t) */
+    KU32            symoff;     /** The file offset of the symbol table. */
+    KU32            nsyms;      /** The number of symbols in the symbol table. */
+    KU32            stroff;     /** The file offset of the string table. */
+    KU32            strsize;    /** The size of the string table. */
+} symtab_command_t;
+
+
+/** @todo dysymtab_command (LC_DYSYMTAB)  */
+/** @todo dylib_table_of_contents */
+/** @todo dylib_module_32 */
+/** @todo dylib_module_64 */
+/** @todo dylib_reference */
+/** @todo twolevel_hints_command (LC_TWOLEVEL_HINTS) */
+/** @todo twolevel_hint */
+/** @todo prebind_cksum_command (LC_PREBIND_CKSUM) */
+
+
+/**
+ * UUID generated by ld.
+ */
+typedef struct uuid_command
+{
+    KU32            cmd;        /**< LC_UUID */
+    KU32            cmdsize;    /**< sizeof(uuid_command_t) */
+    KU8             uuid[16];   /** The UUID bytes. */
+} uuid_command_t;
+
+
+/** @todo symseg_command (LC_SYMSEG) */
+/** @todo ident_command (LC_IDENT) */
+/** @todo fvmfile_command (LC_FVMFILE) */
+/** @todo rpath_command (LC_RPATH) */
+
+typedef struct linkedit_data_command 
+{
+    KU32            cmd;        /**< LC_CODE_SIGNATURE, LC_SEGMENT_SPLIT_INFO, LC_FUNCTION_STARTS */
+    KU32            cmdsize;    /**< size of this structure. */
+    KU32            dataoff;    /**< Offset into the file of the data. */
+    KU32            datasize;   /**< The size of the data. */
+} linkedit_data_command_t;
+
+/** @todo encryption_info_command (LC_ENCRYPTION_INFO) */
+/** @todo dyld_info_command (LC_DYLD_INFO, LC_DYLD_INFO_ONLY) */
+
+typedef struct version_min_command
+{
+    KU32            cmd;        /**< LC_VERSION_MIN_MACOSX, LC_VERSION_MIN_IPHONEOS */
+    KU32            cmdsize;    /**< size of this structure. */
+    KU32            version;    /**< 31..16=major, 15..8=minor, 7..0=patch. */
+    KU32            reserved;   /**< MBZ. */
+} version_min_command_t;
+
+/** @} */
+
+
+
+/** @defgroup grp_macho_o_syms  Symbol Table
+ * @{ */
+
+/**
+ * The 32-bit Mach-O version of the nlist structure.
+ *
+ * This differs from the a.out nlist struct in that the unused n_other field
+ * was renamed to n_sect and used for keeping the relevant section number.
+ * @remark  This structure is not name mach_nlist_32 in the Apple headers, but nlist.
+ */
+typedef struct macho_nlist_32
+{
+    union
+    {
+        KI32    n_strx;         /**< Offset (index) into the string table. 0 means "". */
+    }           n_un;
+    KU8         n_type;         /**< Symbol type. */
+    KU8         n_sect;         /**< Section number of NO_SECT. */
+    KI16        n_desc;         /**< Type specific, debug info details mostly.*/
+    KU32        n_value;        /**< The symbol value or stab offset. */
+} macho_nlist_32_t;
+
+
+/**
+ * The 64-bit Mach-O version of the nlist structure.
+ * @see macho_nlist_32
+ */
+typedef struct macho_nlist_64
+{
+    union
+    {
+        KU32    n_strx;         /**< Offset (index) into the string table. 0 means "". */
+    }           n_un;
+    KU8         n_type;         /**< Symbol type. */
+    KU8         n_sect;         /**< Section number of NO_SECT. */
+    KI16        n_desc;         /**< Type specific, debug info details mostly.*/
+    KU64        n_value;        /**< The symbol value or stab offset. */
+} macho_nlist_64_t;
+
+
+/** @name Symbol Type Constants (macho_nlist_32_t::n_type, macho_nlist_64_t::n_type)
+ *
+ * In the Mach-O world n_type is somewhat similar to a.out, meaning N_EXT, N_UNDF, N_ABS
+ * and the debug symbols are essentially the same, but the remaining stuff is different.
+ * The main reason for this is that the encoding of section has been moved to n_sect
+ * to permit up to 255 sections instead of the fixed 3 a.out sections (not counting
+ * the abs symbols and set vectors).
+ *
+ * To avoid confusion with a.out the Mach-O constants has been fitted with a MACHO_
+ * prefix here.
+ *
+ * Common symbols (aka communal symbols and comdefs) are represented by
+ * n_type = MACHO_N_EXT | MACHO_N_UNDF, n_sect = NO_SECT and n_value giving
+ * the size.
+ *
+ *
+ * Symbol table entries can be inserted directly in the assembly code using
+ * this notation:
+ * @code
+ *      .stabs "n_name", n_type, n_sect, n_desc, n_value
+ * @endcode
+ *
+ * (1) The line number is optional, GCC doesn't set it.
+ * (2) The type is optional, GCC doesn't set it.
+ * (3) The binutil header is "skeptical" about the line. I'm skeptical about the whole thing... :-)
+ * (M) Mach-O specific?
+ * (S) Sun specific?
+ * @{
+ */
+
+/* Base masks. */
+#define MACHO_N_EXT     KU8_C(0x01)   /**< External symbol (when set) (N_EXT). */
+#define MACHO_N_TYPE    KU8_C(0x0e)   /**< Symbol type (N_TYPE without the 8th bit). */
+#define MACHO_N_PEXT    KU8_C(0x10)   /**< Private extern symbol (when set). (M) */
+#define MACHO_N_STAB    KU8_C(0xe0)   /**< Debug symbol mask (N_STAB). */
+
+/* MACHO_N_TYPE values. */
+#define MACHO_N_UNDF    KU8_C(0x00)   /**< MACHO_N_TYPE: Undefined symbol (N_UNDF). n_sect = NO_SECT. */
+#define MACHO_N_ABS     KU8_C(0x02)   /**< MACHO_N_TYPE: Absolute symbol (N_UNDF). n_sect = NO_SECT. */
+#define MACHO_N_INDR    KU8_C(0x0a)   /**< MACHO_N_TYPE: Indirect symbol, n_value is the index of the symbol. (M) */
+#define MACHO_N_PBUD    KU8_C(0x0c)   /**< MACHO_N_TYPE: Prebound undefined symbo (defined in a dylib). (M) */
+#define MACHO_N_SECT    KU8_C(0x0e)   /**< MACHO_N_TYPE: Defined in the section given by n_sects. (M) */
+
+/* Debug symbols. */
+#define MACHO_N_GSYM    KU8_C(0x20)   /**< Global variable.       "name",, NO_SECT, type, 0       (2) */
+#define MACHO_N_FNAME   KU8_C(0x22)   /**< Function name (F77).   "name",, NO_SECT, 0, 0 */
+#define MACHO_N_FUN     KU8_C(0x24)   /**< Function / text var.   "name",, section, line, address (1) */
+#define MACHO_N_STSYM   KU8_C(0x26)   /**< Static data symbol.    "name",, section, type, address (2) */
+#define MACHO_N_LCSYM   KU8_C(0x28)   /**< static bss symbol.     "name",, section, type, address (2) */
+    /* omits N_MAIN and N_ROSYM. */
+#define MACHO_N_BNSYM   KU8_C(0x2e)   /**< Begin nsect symbol.         0,, section, 0, address (M) */
+#define MACHO_N_PC      KU8_C(0x30)   /**< Global pascal symbol.  "name",, NO_SECT, subtype?, line (3) */
+    /* omits N_NSYMS, N_NOMAP and N_OBJ. */
+#define MACHO_N_OPT     KU8_C(0x3c)   /**< Options for the debugger related to the language of the
+                                             source file.           "options?",,,, */
+#define MACHO_N_RSYM    KU8_C(0x40)   /**< Register variable.     "name",, NO_SECT, type, register */
+    /* omits N_M2C */
+#define MACHO_N_SLINE   KU8_C(0x44)   /**< Source line.                0,, section, line, address */
+    /* omits N_DSLINE, N_BSLINE / N_BROWS, N_DEFD and N_FLINE. */
+#define MACHO_N_ENSYM   KU8_C(0x4e)   /**< End nsect symbol.           0,, section, 0, address (M) */
+    /* omits N_EHDECL / N_MOD2 and N_CATCH. */
+#define MACHO_N_SSYM    KU8_C(0x60)   /**< Struct/union element.  "name",, NO_SECT, type, offset */
+    /* omits N_ENDM */
+#define MACHO_N_SO      KU8_C(0x64)   /**< Source file name.      "fname",, section, 0, address */
+#define MACHO_N_OSO     KU8_C(0x66)   /**< Object file name.      "fname",, 0, 0, st_mtime (M?) */
+    /* omits N_ALIAS */
+#define MACHO_N_LSYM    KU8_C(0x80)   /**< Stack variable.        "name",, NO_SECT, type, frame_offset */
+#define MACHO_N_BINCL   KU8_C(0x82)   /**< Begin #include.        "fname",, NO_SECT, 0, sum? */
+#define MACHO_N_SOL     KU8_C(0x84)   /**< #included file.        "fname",, section, 0, start_address (S) */
+#define MACHO_N_PARAMS  KU8_C(0x86)   /**< Compiler params.       "params",, NO_SECT, 0, 0 */
+#define MACHO_N_VERSION KU8_C(0x88)   /**< Compiler version.      "version",, NO_SECT, 0, 0 */
+#define MACHO_N_OLEVEL  KU8_C(0x8A)   /**< Compiler -O level.     "level",, NO_SECT, 0, 0 */
+#define MACHO_N_PSYM    KU8_C(0xa0)   /**< Parameter variable.    "name",, NO_SECT, type, frame_offset */
+#define MACHO_N_EINCL   KU8_C(0xa2)   /**< End #include.          "fname",, NO_SECT, 0, 0 (S) */
+#define MACHO_N_ENTRY   KU8_C(0xa4)   /**< Alternate entry point. "name",, section, line, address */
+#define MACHO_N_LBRAC   KU8_C(0xc0)   /**< Left bracket.               0,, NO_SECT, nesting_level, address */
+#define MACHO_N_EXCL    KU8_C(0xc2)   /**< Deleted include file.  "fname",, NO_SECT, 0, sum?  (S) */
+    /* omits N_SCOPE */
+#define MACHO_N_RBRAC   KU8_C(0xe0)   /**< Right bracket.              0,, NO_SECT, nesting_level, address */
+#define MACHO_N_BCOMM   KU8_C(0xe2)   /**< Begin common.          "name",, NO_SECT?, 0, 0 */
+#define MACHO_N_ECOMM   KU8_C(0xe4)   /**< End common.            "name",, section, 0, 0 */
+#define MACHO_N_ECOML   KU8_C(0xe8)   /**< End local common.           0,, section, 0, address */
+#define MACHO_N_LENG    KU8_C(0xfe)   /**< Length-value of the preceding entry.
+                                                                    "name",, NO_SECT, 0, length */
+
+/** @} */
+
+/** @name Symbol Description Bits (macho_nlist_32_t::n_desc, macho_nlist_64_t::n_desc)
+ *
+ * Mach-O puts the n_desc field to a number of uses, like lazy binding , library
+ * ordinal numbers for -twolevel_namespace, stripping and weak symbol handling.
+ *
+ * @remark The REFERENCE_FLAGS_* are really not flags in the normal sense (bit),
+ *         they are more like enum values.
+ * @{
+ */
+
+#define REFERENCE_TYPE                  KU16_C(0x000f)    /**< The reference type mask. */
+#define REFERENCE_FLAG_UNDEFINED_NON_LAZY             0     /**< Normal undefined symbol. */
+#define REFERENCE_FLAG_UNDEFINED_LAZY                 1     /**< Lazy undefined symbol. */
+#define REFERENCE_FLAG_DEFINED                        2     /**< Defined symbol (dynamic linking). */
+#define REFERENCE_FLAG_PRIVATE_DEFINED                3     /**< Defined private symbol (dynamic linking). */
+#define REFERENCE_FLAG_PRIVATE_UNDEFINED_NON_LAZY     4     /**< Normal undefined private symbol. */
+#define REFERENCE_FLAG_PRIVATE_UNDEFINED_LAZY         5     /**< Lazy undefined private symbol. */
+
+#define REFERENCED_DYNAMICALLY          KU16_C(0x0010)    /**< Don't strip. */
+
+
+/** Get the dynamic library ordinal. */
+#define GET_LIBRARY_ORDINAL(n_desc)     \
+    (((n_desc) >> 8) & 0xff)
+/** Set the dynamic library ordinal. */
+#define SET_LIBRARY_ORDINAL(n_desc, ordinal) \
+    (n_desc) = (((n_desc) & 0xff) | (((ordinal) & 0xff) << 8))
+#define SELF_LIBRARY_ORDINAL            0x00                /**< Special ordinal for refering to onself. */
+#define MAX_LIBRARY_ORDINAL             0xfd                /**< Maximum ordinal number. */
+#define DYNAMIC_LOOKUP_ORDINAL          0xfe                /**< Special ordinal number for dynamic lookup. (Mac OS X 10.3 and later) */
+#define EXECUTABLE_ORDINAL              0xff                /**< Special ordinal number for the executable.  */
+
+
+/** Only MH_OBJECT: Never dead strip me! */
+#define N_NO_DEAD_STRIP                 KU16_C(0x0020)
+/** Not MH_OBJECT: Discarded symbol. */
+#define N_DESC_DISCARDED                KU16_C(0x0020)
+/** Weak external symbol. Symbol can be missing, in which case it's will have the value 0. */
+#define N_WEAK_REF                      KU16_C(0x0040)
+/** Weak symbol definition. The symbol can be overridden by another weak
+ * symbol already present or by a non-weak (strong) symbol definition.
+ * Currently only supported for coalesed symbols.
+ * @remark This bit means something differently for undefined symbols, see N_REF_TO_WEAK.
+ */
+#define N_WEAK_DEF                      KU16_C(0x0080)
+/** Reference to a weak symbol, resolve using flat namespace searching.
+ * @remark This bit means something differently for defined symbols, see N_WEAK_DEF. */
+#define N_REF_TO_WEAK                   KU16_C(0x0080)
+
+/** @} */
+
+/** @} */
+
+
+/** @defgroup grp_macho_o_relocs    Relocations
+ * @{ */
+
+/**
+ * Relocation entry.
+ *
+ * Differs from a.out in the meaning of r_symbolnum when r_extern=0 and
+ * that r_pad is made into r_type.
+ *
+ * @remark  This structure and type has been prefixed with macho_ to avoid
+ *          confusion with the original a.out type.
+ */
+typedef struct macho_relocation_info
+{
+    KI32        r_address;          /**< Section relative address of the fixup.
+                                         The top bit (signed) indicates that this is a scattered
+                                         relocation if set, see scattered_relocation_info_t. */
+    KU32        r_symbolnum : 24,   /**< r_extern=1: Symbol table index, relocate with the address of this symbol.
+                                         r_extern=0: Section ordinal, relocate with the address of this section. */
+                r_pcrel : 1,        /**< PC (program counter) relative fixup; subtract the fixup address. */
+                r_length : 2,       /**< Fixup length: 0=KU8, 1=KU16, 2=KU32, 3=KU64. */
+                r_extern : 1,       /**< External or internal fixup, decides the r_symbolnum interpretation.. */
+                r_type : 4;         /**< Relocation type; 0 is standard, non-zero are machine specific. */
+} macho_relocation_info_t;
+
+/** Special section ordinal value for absolute relocations. */
+#define R_ABS           0
+
+/** Flag in r_address indicating that the relocation is of the
+ * scattered_relocation_info_t kind and not macho_relocation_info_t. */
+#define R_SCATTERED     KU32_C(0x80000000)
+
+/**
+ * Scattered relocation.
+ *
+ * This is a hack mainly for RISC machines which restricts section size
+ * to 16MB among other things.
+ *
+ * The reason for the big/little endian differences here is of course because
+ * of the R_SCATTERED mask and the way bitfields are implemented by the
+ * C/C++ compilers.
+ */
+typedef struct scattered_relocation_info
+{
+#if K_ENDIAN == K_ENDIAN_LITTLE
+    KU32        r_address : 24,     /**< Section relative address of the fixup. (macho_relocation_info_t::r_address) */
+                r_type : 4,         /**< Relocation type; 0 is standard, non-zero are machine specific. (macho_relocation_info_t::r_type) */
+                r_length : 2,       /**< Fixup length: 0=KU8, 1=KU16, 2=KU32, 3=KU64. (macho_relocation_info_t::r_length) */
+                r_pcrel : 1,        /**< PC (program counter) relative fixup; subtract the fixup address. (macho_relocation_info_t::r_pcrel) */
+                r_scattered : 1;    /**< Set if scattered relocation, clear if normal relocation. */
+#elif K_ENDIAN == K_ENDIAN_BIG
+    KU32        r_scattered : 1,    /**< Set if scattered relocation, clear if normal relocation. */
+                r_pcrel : 1,        /**< PC (program counter) relative fixup; subtract the fixup address. (macho_relocation_info_t::r_pcrel) */
+                r_length : 2,       /**< Fixup length: 0=KU8, 1=KU16, 2=KU32, 3=KU64. (macho_relocation_info_t::r_length) */
+                r_type : 4,         /**< Relocation type; 0 is standard, non-zero are machine specific. (macho_relocation_info_t::r_type) */
+                r_address : 24;     /**< Section relative address of the fixup. (macho_relocation_info_t::r_address) */
+#else
+# error "Neither K_ENDIAN isn't LITTLE or BIG!"
+#endif
+    KI32        r_value;            /**< The value the fixup is refering to (without offset added). */
+} scattered_relocation_info_t;
+
+/**
+ * Relocation type values for a generic implementation (for r_type).
+ */
+typedef enum reloc_type_generic
+{
+    GENERIC_RELOC_VANILLA = 0,      /**< Standard relocation. */
+    GENERIC_RELOC_PAIR,             /**< Follows GENERIC_RELOC_SECTDIFF. */
+    GENERIC_RELOC_SECTDIFF,         /**< ??? */
+    GENERIC_RELOC_PB_LA_PTR,        /**< Prebound lazy pointer whatever that. */
+    GENERIC_RELOC_LOCAL_SECTDIFF    /**< ??? */
+} reloc_type_generic_t;
+
+/**
+ * Relocation type values for AMD64 (for r_type).
+ */
+typedef enum reloc_type_x86_64
+{
+    X86_64_RELOC_UNSIGNED = 0,      /**< Absolute address. */
+    X86_64_RELOC_SIGNED,            /**< Signed displacement. */
+    X86_64_RELOC_BRANCH,            /**< Branch displacement (jmp/call, adj by size). */
+    X86_64_RELOC_GOT_LOAD,          /**< GOT entry load. */
+    X86_64_RELOC_GOT,               /**< GOT reference. */
+    X86_64_RELOC_SUBTRACTOR,        /**< ??. */
+    X86_64_RELOC_SIGNED_1,          /**< Signed displacement with a -1 added. */
+    X86_64_RELOC_SIGNED_2,          /**< Signed displacement with a -2 added. */
+    X86_64_RELOC_SIGNED_4           /**< Signed displacement with a -4 added. */
+} reloc_type_x86_64_t;
+
+/** @} */
+
+
+/** @} */
+#endif
+
diff --git a/src/lib/kStuff/include/k/kLdrFmts/mz.h b/src/lib/kStuff/include/k/kLdrFmts/mz.h
new file mode 100644
index 0000000..b159cac
--- /dev/null
+++ b/src/lib/kStuff/include/k/kLdrFmts/mz.h
@@ -0,0 +1,70 @@
+/* $Id: mz.h 31 2009-07-01 21:08:06Z bird $ */
+/** @file
+ * MZ structures, types and defines.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kLdrFmts_mz_h___
+#define ___k_kLdrFmts_mz_h___
+
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+
+#pragma pack(1) /* not required */
+
+typedef struct _IMAGE_DOS_HEADER
+{
+    KU16       e_magic;
+    KU16       e_cblp;
+    KU16       e_cp;
+    KU16       e_crlc;
+    KU16       e_cparhdr;
+    KU16       e_minalloc;
+    KU16       e_maxalloc;
+    KU16       e_ss;
+    KU16       e_sp;
+    KU16       e_csum;
+    KU16       e_ip;
+    KU16       e_cs;
+    KU16       e_lfarlc;
+    KU16       e_ovno;
+    KU16       e_res[4];
+    KU16       e_oemid;
+    KU16       e_oeminfo;
+    KU16       e_res2[10];
+    KU32       e_lfanew;
+} IMAGE_DOS_HEADER;
+typedef IMAGE_DOS_HEADER *PIMAGE_DOS_HEADER;
+
+#ifndef IMAGE_DOS_SIGNATURE
+# define IMAGE_DOS_SIGNATURE K_LE2H_U16('M' | ('Z' << 8))
+#endif
+
+#pragma pack()
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kLdrFmts/pe.h b/src/lib/kStuff/include/k/kLdrFmts/pe.h
new file mode 100644
index 0000000..42af4df
--- /dev/null
+++ b/src/lib/kStuff/include/k/kLdrFmts/pe.h
@@ -0,0 +1,566 @@
+/* $Id: pe.h 92 2016-09-08 15:31:37Z bird $ */
+/** @file
+ * PE structures, types and defines.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kLdrFmts_pe_h___
+#define ___k_kLdrFmts_pe_h___
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kTypes.h>
+#include <k/kDefs.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+#ifndef IMAGE_NT_SIGNATURE
+# define  IMAGE_NT_SIGNATURE K_LE2H_U32('P' | ('E' << 8))
+#endif
+
+/* file header */
+#define  IMAGE_FILE_MACHINE_UNKNOWN  0x0000
+#define  IMAGE_FILE_MACHINE_I386  0x014c
+#define  IMAGE_FILE_MACHINE_AMD64  0x8664
+#define  IMAGE_FILE_MACHINE_ARM  0x01c0
+#define  IMAGE_FILE_MACHINE_ARMNT 0x01c4
+#define  IMAGE_FILE_MACHINE_ARM64  0xaa64
+#define  IMAGE_FILE_MACHINE_EBC  0x0ebc
+
+#define  IMAGE_FILE_RELOCS_STRIPPED  0x0001
+#define  IMAGE_FILE_EXECUTABLE_IMAGE  0x0002
+#define  IMAGE_FILE_LINE_NUMS_STRIPPED  0x0004
+#define  IMAGE_FILE_LOCAL_SYMS_STRIPPED  0x0008
+#define  IMAGE_FILE_AGGRESIVE_WS_TRIM  0x0010
+#define  IMAGE_FILE_LARGE_ADDRESS_AWARE  0x0020
+#define  IMAGE_FILE_16BIT_MACHINE  0x0040
+#define  IMAGE_FILE_BYTES_REVERSED_LO  0x0080
+#define  IMAGE_FILE_32BIT_MACHINE  0x0100
+#define  IMAGE_FILE_DEBUG_STRIPPED  0x0200
+#define  IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP  0x0400
+#define  IMAGE_FILE_NET_RUN_FROM_SWAP  0x0800
+#define  IMAGE_FILE_SYSTEM  0x1000
+#define  IMAGE_FILE_DLL  0x2000
+#define  IMAGE_FILE_UP_SYSTEM_ONLY  0x4000
+#define  IMAGE_FILE_BYTES_REVERSED_HI  0x8000
+
+/** Raw UUID byte for the ANON_OBJECT_HEADER_BIGOBJ::ClassID value.
+ * These make out {d1baa1c7-baee-4ba9-af20-faf66aa4dcb8}. */
+#define  ANON_OBJECT_HEADER_BIGOBJ_CLS_ID_BYTES \
+        0xc7, 0xa1, 0xba, 0xd1,/*-*/ 0xee, 0xba,/*-*/ 0xa9, 0x4b,/*-*/ 0xaf, 0x20,/*-*/ 0xfa, 0xf6, 0x6a, 0xa4, 0xdc, 0xb8
+
+/* optional header */
+#define  IMAGE_NT_OPTIONAL_HDR32_MAGIC  0x10B
+#define  IMAGE_NT_OPTIONAL_HDR64_MAGIC  0x20B
+
+#define  IMAGE_SUBSYSTEM_UNKNOWN  0x0
+#define  IMAGE_SUBSYSTEM_NATIVE  0x1
+#define  IMAGE_SUBSYSTEM_WINDOWS_GUI  0x2
+#define  IMAGE_SUBSYSTEM_WINDOWS_CUI  0x3
+#define  IMAGE_SUBSYSTEM_OS2_GUI  0x4
+#define  IMAGE_SUBSYSTEM_OS2_CUI  0x5
+#define  IMAGE_SUBSYSTEM_POSIX_CUI  0x7
+
+#define  IMAGE_LIBRARY_PROCESS_INIT  0x0001
+#define  IMAGE_LIBRARY_PROCESS_TERM  0x0002
+#define  IMAGE_LIBRARY_THREAD_INIT  0x0004
+#define  IMAGE_LIBRARY_THREAD_TERM  0x0008
+#define  IMAGE_DLLCHARACTERISTICS_NO_ISOLATION  0x0200
+#define  IMAGE_DLLCHARACTERISTICS_NO_SEH  0x0400
+#define  IMAGE_DLLCHARACTERISTICS_NO_BIND  0x0800
+#define  IMAGE_DLLCHARACTERISTICS_WDM_DRIVER  0x2000
+#define  IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE  0x8000
+
+#define  IMAGE_NUMBEROF_DIRECTORY_ENTRIES  0x10
+
+#define  IMAGE_DIRECTORY_ENTRY_EXPORT  0x0
+#define  IMAGE_DIRECTORY_ENTRY_IMPORT  0x1
+#define  IMAGE_DIRECTORY_ENTRY_RESOURCE  0x2
+#define  IMAGE_DIRECTORY_ENTRY_EXCEPTION  0x3
+#define  IMAGE_DIRECTORY_ENTRY_SECURITY  0x4
+#define  IMAGE_DIRECTORY_ENTRY_BASERELOC  0x5
+#define  IMAGE_DIRECTORY_ENTRY_DEBUG  0x6
+#define  IMAGE_DIRECTORY_ENTRY_ARCHITECTURE  0x7
+#define  IMAGE_DIRECTORY_ENTRY_COPYRIGHT IMAGE_DIRECTORY_ENTRY_ARCHITECTURE
+#define  IMAGE_DIRECTORY_ENTRY_GLOBALPTR  0x8
+#define  IMAGE_DIRECTORY_ENTRY_TLS  0x9
+#define  IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG  0xa
+#define  IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT  0xb
+#define  IMAGE_DIRECTORY_ENTRY_IAT  0xc
+#define  IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT  0xd
+#define  IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR  0xe
+
+
+/* section header */
+#define  IMAGE_SIZEOF_SHORT_NAME  0x8
+
+#define  IMAGE_SCN_TYPE_REG  0x00000000
+#define  IMAGE_SCN_TYPE_DSECT  0x00000001
+#define  IMAGE_SCN_TYPE_NOLOAD  0x00000002
+#define  IMAGE_SCN_TYPE_GROUP  0x00000004
+#define  IMAGE_SCN_TYPE_NO_PAD  0x00000008
+#define  IMAGE_SCN_TYPE_COPY  0x00000010
+
+#define  IMAGE_SCN_CNT_CODE  0x00000020
+#define  IMAGE_SCN_CNT_INITIALIZED_DATA  0x00000040
+#define  IMAGE_SCN_CNT_UNINITIALIZED_DATA  0x00000080
+
+#define  IMAGE_SCN_LNK_OTHER  0x00000100
+#define  IMAGE_SCN_LNK_INFO  0x00000200
+#define  IMAGE_SCN_TYPE_OVER  0x00000400
+#define  IMAGE_SCN_LNK_REMOVE  0x00000800
+#define  IMAGE_SCN_LNK_COMDAT  0x00001000
+#define  IMAGE_SCN_MEM_PROTECTED  0x00004000
+#define  IMAGE_SCN_NO_DEFER_SPEC_EXC  0x00004000
+#define  IMAGE_SCN_GPREL  0x00008000
+#define  IMAGE_SCN_MEM_FARDATA  0x00008000
+#define  IMAGE_SCN_MEM_SYSHEAP  0x00010000
+#define  IMAGE_SCN_MEM_PURGEABLE  0x00020000
+#define  IMAGE_SCN_MEM_16BIT  0x00020000
+#define  IMAGE_SCN_MEM_LOCKED  0x00040000
+#define  IMAGE_SCN_MEM_PRELOAD  0x00080000
+
+#define  IMAGE_SCN_ALIGN_1BYTES  0x00100000
+#define  IMAGE_SCN_ALIGN_2BYTES  0x00200000
+#define  IMAGE_SCN_ALIGN_4BYTES  0x00300000
+#define  IMAGE_SCN_ALIGN_8BYTES  0x00400000
+#define  IMAGE_SCN_ALIGN_16BYTES  0x00500000
+#define  IMAGE_SCN_ALIGN_32BYTES  0x00600000
+#define  IMAGE_SCN_ALIGN_64BYTES  0x00700000
+#define  IMAGE_SCN_ALIGN_128BYTES  0x00800000
+#define  IMAGE_SCN_ALIGN_256BYTES  0x00900000
+#define  IMAGE_SCN_ALIGN_512BYTES  0x00A00000
+#define  IMAGE_SCN_ALIGN_1024BYTES  0x00B00000
+#define  IMAGE_SCN_ALIGN_2048BYTES  0x00C00000
+#define  IMAGE_SCN_ALIGN_4096BYTES  0x00D00000
+#define  IMAGE_SCN_ALIGN_8192BYTES  0x00E00000
+#define  IMAGE_SCN_ALIGN_MASK  0x00F00000
+
+#define  IMAGE_SCN_LNK_NRELOC_OVFL  0x01000000
+#define  IMAGE_SCN_MEM_DISCARDABLE  0x02000000
+#define  IMAGE_SCN_MEM_NOT_CACHED  0x04000000
+#define  IMAGE_SCN_MEM_NOT_PAGED  0x08000000
+#define  IMAGE_SCN_MEM_SHARED  0x10000000
+#define  IMAGE_SCN_MEM_EXECUTE  0x20000000
+#define  IMAGE_SCN_MEM_READ  0x40000000
+#define  IMAGE_SCN_MEM_WRITE  0x80000000
+
+
+/* relocations */
+#define  IMAGE_REL_BASED_ABSOLUTE  0x0
+#define  IMAGE_REL_BASED_HIGH  0x1
+#define  IMAGE_REL_BASED_LOW  0x2
+#define  IMAGE_REL_BASED_HIGHLOW  0x3
+#define  IMAGE_REL_BASED_HIGHADJ  0x4
+#define  IMAGE_REL_BASED_MIPS_JMPADDR  0x5
+#define  IMAGE_REL_BASED_SECTION  0x6
+#define  IMAGE_REL_BASED_REL32  0x7
+/*#define  IMAGE_REL_BASED_RESERVED1 0x8 */
+#define  IMAGE_REL_BASED_MIPS_JMPADDR16 0x9
+#define  IMAGE_REL_BASED_IA64_IMM64  0x9
+#define  IMAGE_REL_BASED_DIR64  0xa
+#define  IMAGE_REL_BASED_HIGH3ADJ 0xb
+
+/* imports */
+#define  IMAGE_ORDINAL_FLAG32  0x80000000
+#define  IMAGE_ORDINAL32(ord)  ((ord) &  0xffff)
+#define  IMAGE_SNAP_BY_ORDINAL32(ord)  (!!((ord) & IMAGE_ORDINAL_FLAG32))
+
+#define  IMAGE_ORDINAL_FLAG64  0x8000000000000000ULL
+#define  IMAGE_ORDINAL64(ord)  ((ord) &  0xffff)
+#define  IMAGE_SNAP_BY_ORDINAL64(ord)  (!!((ord) & IMAGE_ORDINAL_FLAG64))
+
+
+/* dll/tls entry points argument */
+#define DLL_PROCESS_DETACH      0
+#define DLL_PROCESS_ATTACH      1
+#define DLL_THREAD_ATTACH       2
+#define DLL_THREAD_DETACH       3
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+#pragma pack(4)
+
+typedef struct _IMAGE_FILE_HEADER
+{
+    KU16      Machine;
+    KU16      NumberOfSections;
+    KU32      TimeDateStamp;
+    KU32      PointerToSymbolTable;
+    KU32      NumberOfSymbols;
+    KU16      SizeOfOptionalHeader;
+    KU16      Characteristics;
+} IMAGE_FILE_HEADER;
+typedef IMAGE_FILE_HEADER *PIMAGE_FILE_HEADER;
+
+
+typedef struct _ANON_OBJECT_HEADER
+{
+    KU16        Sig1;
+    KU16        Sig2;
+    KU16        Version;                /**< >= 1 */
+    KU16        Machine;
+    KU32        TimeDataStamp;
+    KU8         ClassID[16];
+    KU32        SizeOfData;
+} ANON_OBJECT_HEADER;
+typedef ANON_OBJECT_HEADER *PANON_OBJECT_HEADER;
+
+
+typedef struct _ANON_OBJECT_HEADER_V2
+{
+    KU16        Sig1;
+    KU16        Sig2;
+    KU16        Version;                /**< >= 2 */
+    KU16        Machine;
+    KU32        TimeDataStamp;
+    KU8         ClassID[16];
+    KU32        SizeOfData;
+    /* New fields for Version >= 2: */
+    KU32        Flags;
+    KU32        MetaDataSize;           /**< CLR metadata  */
+    KU32        MetaDataOffset;
+} ANON_OBJECT_HEADER_V2;
+typedef ANON_OBJECT_HEADER_V2 *PANON_OBJECT_HEADER_V2;
+
+
+typedef struct _ANON_OBJECT_HEADER_BIGOBJ
+{
+    KU16        Sig1;
+    KU16        Sig2;
+    KU16        Version;                /**< >= 2 */
+    KU16        Machine;
+    KU32        TimeDataStamp;
+    KU8         ClassID[16];            /**< ANON_OBJECT_HEADER_BIGOBJ_CLS_ID_BYTES */
+    KU32        SizeOfData;
+    /* New fields for Version >= 2: */
+    KU32        Flags;
+    KU32        MetaDataSize;           /**< CLR metadata  */
+    KU32        MetaDataOffset;
+    /* Specific for bigobj: */
+    KU32        NumberOfSections;
+    KU32        PointerToSymbolTable;
+    KU32        NumberOfSymbols;
+} ANON_OBJECT_HEADER_BIGOBJ;
+typedef ANON_OBJECT_HEADER_BIGOBJ *PANON_OBJECT_HEADER_BIGOBJ;
+
+
+typedef struct _IMAGE_DATA_DIRECTORY
+{
+    KU32      VirtualAddress;
+    KU32      Size;
+} IMAGE_DATA_DIRECTORY;
+typedef IMAGE_DATA_DIRECTORY *PIMAGE_DATA_DIRECTORY;
+
+
+typedef struct _IMAGE_OPTIONAL_HEADER32
+{
+    KU16    Magic;
+    KU8     MajorLinkerVersion;
+    KU8     MinorLinkerVersion;
+    KU32    SizeOfCode;
+    KU32    SizeOfInitializedData;
+    KU32    SizeOfUninitializedData;
+    KU32    AddressOfEntryPoint;
+    KU32    BaseOfCode;
+    KU32    BaseOfData;
+    KU32    ImageBase;
+    KU32    SectionAlignment;
+    KU32    FileAlignment;
+    KU16    MajorOperatingSystemVersion;
+    KU16    MinorOperatingSystemVersion;
+    KU16    MajorImageVersion;
+    KU16    MinorImageVersion;
+    KU16    MajorSubsystemVersion;
+    KU16    MinorSubsystemVersion;
+    KU32    Win32VersionValue;
+    KU32    SizeOfImage;
+    KU32    SizeOfHeaders;
+    KU32    CheckSum;
+    KU16    Subsystem;
+    KU16    DllCharacteristics;
+    KU32    SizeOfStackReserve;
+    KU32    SizeOfStackCommit;
+    KU32    SizeOfHeapReserve;
+    KU32    SizeOfHeapCommit;
+    KU32    LoaderFlags;
+    KU32    NumberOfRvaAndSizes;
+    IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
+} IMAGE_OPTIONAL_HEADER32;
+typedef IMAGE_OPTIONAL_HEADER32 *PIMAGE_OPTIONAL_HEADER32;
+
+typedef struct _IMAGE_OPTIONAL_HEADER64
+{
+    KU16    Magic;
+    KU8     MajorLinkerVersion;
+    KU8     MinorLinkerVersion;
+    KU32    SizeOfCode;
+    KU32    SizeOfInitializedData;
+    KU32    SizeOfUninitializedData;
+    KU32    AddressOfEntryPoint;
+    KU32    BaseOfCode;
+    KU64    ImageBase;
+    KU32    SectionAlignment;
+    KU32    FileAlignment;
+    KU16    MajorOperatingSystemVersion;
+    KU16    MinorOperatingSystemVersion;
+    KU16    MajorImageVersion;
+    KU16    MinorImageVersion;
+    KU16    MajorSubsystemVersion;
+    KU16    MinorSubsystemVersion;
+    KU32    Win32VersionValue;
+    KU32    SizeOfImage;
+    KU32    SizeOfHeaders;
+    KU32    CheckSum;
+    KU16    Subsystem;
+    KU16    DllCharacteristics;
+    KU64    SizeOfStackReserve;
+    KU64    SizeOfStackCommit;
+    KU64    SizeOfHeapReserve;
+    KU64    SizeOfHeapCommit;
+    KU32    LoaderFlags;
+    KU32    NumberOfRvaAndSizes;
+    IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
+} IMAGE_OPTIONAL_HEADER64;
+typedef IMAGE_OPTIONAL_HEADER64 *PIMAGE_OPTIONAL_HEADER64;
+
+
+typedef struct _IMAGE_NT_HEADERS
+{
+    KU32 Signature;
+    IMAGE_FILE_HEADER FileHeader;
+    IMAGE_OPTIONAL_HEADER32 OptionalHeader;
+} IMAGE_NT_HEADERS32;
+typedef IMAGE_NT_HEADERS32 *PIMAGE_NT_HEADERS32;
+
+typedef struct _IMAGE_NT_HEADERS64
+{
+    KU32 Signature;
+    IMAGE_FILE_HEADER FileHeader;
+    IMAGE_OPTIONAL_HEADER64 OptionalHeader;
+} IMAGE_NT_HEADERS64;
+typedef IMAGE_NT_HEADERS64 *PIMAGE_NT_HEADERS64;
+
+
+typedef struct _IMAGE_SECTION_HEADER
+{
+    KU8      Name[IMAGE_SIZEOF_SHORT_NAME];
+    union
+    {
+        KU32      PhysicalAddress;
+        KU32      VirtualSize;
+    } Misc;
+    KU32      VirtualAddress;
+    KU32      SizeOfRawData;
+    KU32      PointerToRawData;
+    KU32      PointerToRelocations;
+    KU32      PointerToLinenumbers;
+    KU16      NumberOfRelocations;
+    KU16      NumberOfLinenumbers;
+    KU32      Characteristics;
+} IMAGE_SECTION_HEADER;
+typedef IMAGE_SECTION_HEADER *PIMAGE_SECTION_HEADER;
+
+
+typedef struct _IMAGE_BASE_RELOCATION
+{
+    KU32      VirtualAddress;
+    KU32      SizeOfBlock;
+} IMAGE_BASE_RELOCATION;
+typedef IMAGE_BASE_RELOCATION *PIMAGE_BASE_RELOCATION;
+
+
+typedef struct _IMAGE_EXPORT_DIRECTORY
+{
+    KU32      Characteristics;
+    KU32      TimeDateStamp;
+    KU16      MajorVersion;
+    KU16      MinorVersion;
+    KU32      Name;
+    KU32      Base;
+    KU32      NumberOfFunctions;
+    KU32      NumberOfNames;
+    KU32      AddressOfFunctions;
+    KU32      AddressOfNames;
+    KU32      AddressOfNameOrdinals;
+} IMAGE_EXPORT_DIRECTORY, *PIMAGE_EXPORT_DIRECTORY;
+
+
+typedef struct _IMAGE_IMPORT_DESCRIPTOR
+{
+    union
+    {
+        KU32      Characteristics;
+        KU32      OriginalFirstThunk;
+    } u;
+    KU32      TimeDateStamp;
+    KU32      ForwarderChain;
+    KU32      Name;
+    KU32      FirstThunk;
+} IMAGE_IMPORT_DESCRIPTOR;
+typedef IMAGE_IMPORT_DESCRIPTOR *PIMAGE_IMPORT_DESCRIPTOR;
+
+
+typedef struct _IMAGE_IMPORT_BY_NAME
+{
+    KU16      Hint;
+    KU8       Name[1];
+} IMAGE_IMPORT_BY_NAME;
+typedef IMAGE_IMPORT_BY_NAME *PIMAGE_IMPORT_BY_NAME;
+
+
+/* The image_thunk_data32/64 structures are not very helpful except for getting RSI. keep them around till all the code has been converted. */
+typedef struct _IMAGE_THUNK_DATA64
+{
+    union
+    {
+        KU64      ForwarderString;
+        KU64      Function;
+        KU64      Ordinal;
+        KU64      AddressOfData;
+    } u1;
+} IMAGE_THUNK_DATA64;
+typedef IMAGE_THUNK_DATA64 *PIMAGE_THUNK_DATA64;
+
+typedef struct _IMAGE_THUNK_DATA32
+{
+    union
+    {
+        KU32      ForwarderString;
+        KU32      Function;
+        KU32      Ordinal;
+        KU32      AddressOfData;
+    } u1;
+} IMAGE_THUNK_DATA32;
+typedef IMAGE_THUNK_DATA32 *PIMAGE_THUNK_DATA32;
+
+
+typedef struct _IMAGE_LOAD_CONFIG_DIRECTORY32
+{
+    KU32      Size;
+    KU32      TimeDateStamp;
+    KU16      MajorVersion;
+    KU16      MinorVersion;
+    KU32      GlobalFlagsClear;
+    KU32      GlobalFlagsSet;
+    KU32      CriticalSectionDefaultTimeout;
+    KU32      DeCommitFreeBlockThreshold;
+    KU32      DeCommitTotalFreeThreshold;
+    KU32      LockPrefixTable;
+    KU32      MaximumAllocationSize;
+    KU32      VirtualMemoryThreshold;
+    KU32      ProcessHeapFlags;
+    KU32      ProcessAffinityMask;
+    KU16      CSDVersion;
+    KU16      Reserved1;
+    KU32      EditList;
+    KU32      SecurityCookie;
+    KU32      SEHandlerTable;
+    KU32      SEHandlerCount;
+} IMAGE_LOAD_CONFIG_DIRECTORY32;
+typedef IMAGE_LOAD_CONFIG_DIRECTORY32 PIMAGE_LOAD_CONFIG_DIRECTORY32;
+
+typedef struct _IMAGE_LOAD_CONFIG_DIRECTORY64
+{
+    KU32      Size;
+    KU32      TimeDateStamp;
+    KU16      MajorVersion;
+    KU16      MinorVersion;
+    KU32      GlobalFlagsClear;
+    KU32      GlobalFlagsSet;
+    KU32      CriticalSectionDefaultTimeout;
+    KU64      DeCommitFreeBlockThreshold;
+    KU64      DeCommitTotalFreeThreshold;
+    KU64      LockPrefixTable;
+    KU64      MaximumAllocationSize;
+    KU64      VirtualMemoryThreshold;
+    KU64      ProcessAffinityMask;
+    KU32      ProcessHeapFlags;
+    KU16      CSDVersion;
+    KU16      Reserved1;
+    KU64      EditList;
+    KU64      SecurityCookie;
+    KU64      SEHandlerTable;
+    KU64      SEHandlerCount;
+} IMAGE_LOAD_CONFIG_DIRECTORY64;
+typedef IMAGE_LOAD_CONFIG_DIRECTORY64 *PIMAGE_LOAD_CONFIG_DIRECTORY64;
+
+typedef struct _IMAGE_DEBUG_DIRECTORY
+{
+    KU32      Characteristics;
+    KU32      TimeDateStamp;
+    KU16      MajorVersion;
+    KU16      MinorVersion;
+    KU32      Type;
+    KU32      SizeOfData;
+    KU32      AddressOfRawData;
+    KU32      PointerToRawData;
+} IMAGE_DEBUG_DIRECTORY;
+typedef IMAGE_DEBUG_DIRECTORY *PIMAGE_DEBUG_DIRECTORY;
+
+#define IMAGE_DEBUG_TYPE_UNKNOWN  0
+#define IMAGE_DEBUG_TYPE_COFF 1
+#define IMAGE_DEBUG_TYPE_CODEVIEW 2 /* 4.0 */
+#define IMAGE_DEBUG_TYPE_FPO 3 /* FPO = frame pointer omission */
+#define IMAGE_DEBUG_TYPE_MISC 4
+#define IMAGE_DEBUG_TYPE_EXCEPTION 5
+#define IMAGE_DEBUG_TYPE_FIXUP 6
+#define IMAGE_DEBUG_TYPE_BORLAND 9
+
+typedef struct _IMAGE_TLS_DIRECTORY32
+{
+    KU32      StartAddressOfRawData;
+    KU32      EndAddressOfRawData;
+    KU32      AddressOfIndex;
+    KU32      AddressOfCallBacks;
+    KU32      SizeOfZeroFill;
+    KU32      Characteristics;
+} IMAGE_TLS_DIRECTORY32;
+typedef IMAGE_TLS_DIRECTORY32 *PIMAGE_TLS_DIRECTORY32;
+
+typedef struct _IMAGE_TLS_DIRECTORY64
+{
+    KU64      StartAddressOfRawData;
+    KU64      EndAddressOfRawData;
+    KU64      AddressOfIndex;
+    KU64      AddressOfCallBacks;
+    KU32      SizeOfZeroFill;
+    KU32      Characteristics;
+} IMAGE_TLS_DIRECTORY64;
+typedef IMAGE_TLS_DIRECTORY64 *PIMAGE_TLS_DIRECTORY64;
+
+
+#pragma pack()
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kMagics.h b/src/lib/kStuff/include/k/kMagics.h
new file mode 100644
index 0000000..9690b9b
--- /dev/null
+++ b/src/lib/kStuff/include/k/kMagics.h
@@ -0,0 +1,43 @@
+/* $Id: kMagics.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kMagics - Various Magic Constants.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#ifndef ___k_kMagics_h___
+#define ___k_kMagics_h___
+
+/** The magic for KRDR::u32Magic. (Katsu Aki (Katsuaki Nakamura))
+ * @ingroup grp_kRdrAll */
+#define KRDR_MAGIC          0x19610919
+/** The magic value for the debug module structure. (Some manga artist)
+ * @ingroup grp_kDbgAll */
+#define KDBGMOD_MAGIC       0x19200501
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kRbTmpl/kRbAssert.h b/src/lib/kStuff/include/k/kRbTmpl/kRbAssert.h
new file mode 100644
index 0000000..03c17a4
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRbTmpl/kRbAssert.h
@@ -0,0 +1,136 @@
+/* $Id: kRbAssert.h 38 2009-11-10 00:01:38Z bird $ */
+/** @file
+ * kRbTmpl - Templated Red-Black Trees, Assert Valid Tree.
+ */
+
+/*
+ * Copyright (c) 2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * Internal helper for KRB_FN(Assert)
+ *
+ * @returns The number of black nodes. -1 is return if the tree is invalid.
+ * @param   pRoot       The root of the (sub-)tree to assert.
+ */
+K_DECL_INLINE(int) KRB_FN(AssertRecurse)(KRBNODE *pRoot)
+{
+    int cLeft;
+    int cRight;
+
+    if (!pRoot)
+        /* leafs are black. */
+        return 1;
+
+#ifdef KRB_EQUAL_ALLOWED
+    /* equal nodes are equal :) */
+    if (pNode->mpList != KRB_NULL)
+    {
+        KRBROOT *pEqual;
+        for (pEqual = KRB_GET_POINTER(&pNode->mpList); pEqual; pEqual = KRB_GET_POINTER_NULL(&pEqual->mpList))
+            kHlpAssertReturn(K_CMP_E(pEqual->mKey, pNode->mKey), -1);
+    }
+#endif
+
+    /* binary tree. */
+    kHlpAssertReturn(pRoot->mpLeft  != KRB_NULL && KRB_CMP_G(KRB_GET_POINTER(&pRoot->mpLeft)->mpKey, pRoot->mKey), -1);
+    kHlpAssertReturn(pRoot->mpRight != KRB_NULL && KRB_CMP_G(pRoot->mKey, KRB_GET_POINTER(&pRoot->mpRigth)->mpKey), -1);
+
+    /* both children of red nodes are black. */
+    kHlpAssertReturn(!KRB_IS_RED(pRoot) || (!KRB_IS_RED(pRoot->mpLeft) && !KRB_IS_RED(pRoot->mpRight)), -1);
+
+    /* all paths to leafs contains the same number of black nodes. */
+    cLeft  = KRB_FN(AssertRecurse)(KRB_GET_POINTER_NULL(&pRoot->mpLeft));
+    cRight = KRB_FN(AssertRecurse)(KRB_GET_POINTER_NULL(&pRoot->mpRight));
+    kHlpAssertMsgReturn(cLeft == cRight || cLeft == -1 || cRight == -1, ("%d vs. %d\n", cLeft, cRight), -1);
+
+    return cLeft + !KRB_IS_RED(pRoot);
+}
+
+
+/**
+ * Asserts the validity of the Red-Black tree.
+ *
+ * This method is using recursion and may therefore consume quite a bit of stack
+ * on a large tree.
+ *
+ * @returns K_TRUE if valid.
+ * @returns K_FALSE if invalid, assertion raised on each violation.
+ * @param   pRoot           Pointer to the Red-Back tree's root structure.
+ */
+KRB_DECL(KBOOL) KRB_FN(Assert)(KRBROOT *pRoot)
+{
+    KBOOL       fRc = K_TRUE;
+#ifdef KRB_CACHE_SIZE
+    unsigned    i;
+#endif
+    KRBNODE    *pNode;
+
+    KRB_READ_LOCK(pRoot);
+    if (pRoot->mpRoot == KRB_NULL)
+    {
+        KRB_READ_UNLOCK(pRoot);
+        return 0;
+    }
+
+#ifdef KRB_CACHE_SIZE
+    /*
+     * Validate the cache.
+     */
+    for (i = 0; i < (KRB_CACHE_SIZE); i++)
+        if (pRoot->maLookthru[i] != KRB_NULL)
+        {
+            KRBNODE pCache = KRB_GET_POINTER(&pRoot->maLookthru[i]);
+
+            /** @todo ranges */
+            kHlpAssertMsgStmt(i == KRB_CACHE_HASH(pCache->Key), ("Invalid cache entry %u, hashed to %u\n", i, KRB_CACHE_HASH(pCache->Key)), fRc = K_FALSE);
+
+            pNode = KRB_GET_POINTER(&pRoot->mpRoot);
+            while (pNode)
+            {
+                if (KRB_CMP_E(pCache->mKey, pNode->mKey))
+                {
+                    kHlpAssertMsgStmt(pNode == pCache, ("Invalid cache entry %u=%p, found %p\n", i, pCache, pNode), fRc = K_FALSE);
+                    break;
+                }
+                if (KRB_CMP_G(pCache->mKey, pNode->mKey))
+                    pNode = KRB_GET_POINTER_NULL(&pNode->mRight);
+                else
+                    pNode = KRB_GET_POINTER_NULL(&pNode->mLeft);
+            }
+            kHlpAssertMsgStmt(pNode, ("Invalid cache entry %u/%p - not found\n", i, pCache), fRc = K_FALSE);
+        }
+#endif
+
+    /*
+     * Recurse thru the tree.
+     */
+    if (KRB_FN(AssertRecurse)(KRB_GET_POINTER(&pRoot->mpRoot)) == -1)
+        fRc = K_FALSE;
+
+    KRB_READ_UNLOCK(pRoot);
+    return fRc;
+}
+
diff --git a/src/lib/kStuff/include/k/kRbTmpl/kRbBase.h b/src/lib/kStuff/include/k/kRbTmpl/kRbBase.h
new file mode 100644
index 0000000..c79f7ce
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRbTmpl/kRbBase.h
@@ -0,0 +1,609 @@
+/* $Id: kRbBase.h 38 2009-11-10 00:01:38Z bird $ */
+/** @file
+ * kRbTmpl - Templated Red-Black Trees, The Mandatory Base Code.
+ */
+
+/*
+ * Copyright (c) 2001-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/** @page pg_kAvlTmpl   Template Configuration.
+ *
+ *  This is a templated implementation of Red-Black trees in C.  The template
+ *  parameters relates to the kind of key used and how duplicates are treated.
+ *
+ *  \#define KRB_EQUAL_ALLOWED
+ *  Define this to tell us that equal keys are allowed.
+ *  Then Equal keys will be put in a list pointed to by KRBNODE::pList.
+ *  This is by default not defined.
+ *
+ *  \#define KRB_CHECK_FOR_EQUAL_INSERT
+ *  Define this to enable insert check for equal nodes.
+ *  This is by default not defined.
+ *
+ *  \#define KRB_MAX_STACK
+ *  Use this to specify the max number of stack entries the stack will use when
+ *  inserting and removing nodes from the tree. The size should be something like
+ *      log2(<max nodes>) + 3
+ *  Must be defined.
+ *
+ *  \#define KRB_RANGE
+ *  Define this to enable key ranges.
+ *
+ *  \#define KRB_OFFSET
+ *  Define this to link the tree together using self relative offset
+ *  instead of memory pointers, thus making the entire tree relocatable
+ *  provided all the nodes - including the root node variable - are moved
+ *  the exact same distance.
+ *
+ *  \#define KRB_CACHE_SIZE
+ *  Define this to employ a lookthru cache (direct) to speed up lookup for
+ *  some usage patterns. The value should be the number of members of the array.
+ *
+ *  \#define KRB_CACHE_HASH(Key)
+ *  Define this to specify a more efficient translation of the key into
+ *  a lookthru array index. The default is key % size.
+ *  For some key types this is required as the default will not compile.
+ *
+ *  \#define KRB_LOCKED
+ *  Define this if you wish for the tree to be locked via the
+ *  KRB_WRITE_LOCK,  KRB_WRITE_UNLOCK, KRB_READ_LOCK and
+ *  KRB_READ_UNLOCK macros. If not defined the tree will not be subject
+ *  do any kind of locking and the problem of concurrency is left the user.
+ *
+ *  \#define KRB_WRITE_LOCK(pRoot)
+ *  Lock the tree for writing.
+ *
+ *  \#define KRB_WRITE_UNLOCK(pRoot)
+ *  Counteracts KRB_WRITE_LOCK.
+ *
+ *  \#define KRB_READ_LOCK(pRoot)
+ *  Lock the tree for reading.
+ *
+ *  \#define KRB_READ_UNLOCK(pRoot)
+ *  Counteracts KRB_READ_LOCK.
+ *
+ *  \#define KRBKEY
+ *  Define this to the name of the AVL key type.
+ *
+ *  \#define KRB_STD_KEY_COMP
+ *  Define this to use the standard key compare macros. If not set all the
+ *  compare operations for KRBKEY have to be defined: KRB_CMP_G, KRB_CMP_E, KRB_CMP_NE,
+ *  KRB_R_IS_IDENTICAL, KRB_R_IS_INTERSECTING and KRB_R_IS_IN_RANGE. The
+ *  latter three are only required when KRB_RANGE is defined.
+ *
+ *  \#define KRBNODE
+ *  Define this to the name (typedef) of the AVL node structure. This
+ *  structure must have a mpLeft, mpRight, mKey and mHeight member.
+ *  If KRB_RANGE is defined a mKeyLast is also required.
+ *  If KRB_EQUAL_ALLOWED is defined a mpList member is required.
+ *  It's possible to use other member names by redefining the names.
+ *
+ *  \#define KRBTREEPTR
+ *  Define this to the name (typedef) of the tree pointer type. This is
+ *  required when KRB_OFFSET is defined. When not defined it defaults
+ *  to KRBNODE *.
+ *
+ *  \#define KRBROOT
+ *  Define this to the name (typedef) of the AVL root structure. This
+ *  is optional. However, if specified it must at least have a mpRoot
+ *  member of KRBTREEPTR type. If KRB_CACHE_SIZE is non-zero a
+ *  maLookthru[KRB_CACHE_SIZE] member of the KRBTREEPTR type is also
+ *  required.
+ *
+ *  \#define KRB_FN
+ *  Use this to alter the names of the AVL functions.
+ *  Must be defined.
+ *
+ *  \#define KRB_TYPE(prefix, name)
+ *  Use this to make external type names and unique. The prefix may be empty.
+ *  Must be defined.
+ *
+ *  \#define KRB_INT(name)
+ *  Use this to make internal type names and unique. The prefix may be empty.
+ *  Must be defined.
+ *
+ *  \#define KRB_DECL(rettype)
+ *  Function declaration macro that should be set according to the scope
+ *  the instantiated template should have. For instance an inlined scope
+ *  (private or public) should K_DECL_INLINE(rettype) here.
+ *
+ *  This version of the kAVL tree offers the option of inlining the entire
+ *  implementation. This depends on the compiler doing a decent job in both
+ *  making use of the inlined code and to eliminate const variables.
+ */
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+#include <k/kHlpAssert.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** @def KRB_GET_POINTER
+ * Reads a 'pointer' value.
+ *
+ * @returns The native pointer.
+ * @param   pp      Pointer to the pointer to read.
+ * @internal
+ */
+
+/** @def KRB_GET_POINTER_NULL
+ * Reads a 'pointer' value which can be KRB_NULL.
+ *
+ * @returns The native pointer.
+ * @returns NULL pointer if KRB_NULL.
+ * @param   pp      Pointer to the pointer to read.
+ * @internal
+ */
+
+/** @def KRB_SET_POINTER
+ * Writes a 'pointer' value.
+ * For offset-based schemes offset relative to pp is calculated and assigned to *pp.
+ *
+ * @returns stored pointer.
+ * @param   pp      Pointer to where to store the pointer.
+ * @param   p       Native pointer to assign to *pp.
+ * @internal
+ */
+
+/** @def KRB_SET_POINTER_NULL
+ * Writes a 'pointer' value which can be KRB_NULL.
+ *
+ * For offset-based schemes offset relative to pp is calculated and assigned to *pp,
+ * if p is not KRB_NULL of course.
+ *
+ * @returns stored pointer.
+ * @param   pp      Pointer to where to store the pointer.
+ * @param   pp2     Pointer to where to pointer to assign to pp. This can be KRB_NULL
+ * @internal
+ */
+
+#ifndef KRBTREEPTR
+# define KRBTREEPTR                         KRBNODE *
+#endif
+
+#ifndef KRBROOT
+# define KRBROOT                            KRB_TYPE(,ROOT)
+# define KRB_NEED_KRBROOT
+#endif
+
+#ifdef KRB_CACHE_SIZE
+# ifndef KRB_CACHE_HASH
+#  define KRB_CACHE_HASH(Key)               ( (Key) % (KRB_CACHE_SIZE) )
+# endif
+#elif defined(KRB_CACHE_HASH)
+# error "KRB_CACHE_HASH without KRB_CACHE_SIZE!"
+#endif
+
+#ifdef KRB_CACHE_SIZE
+# define KRB_CACHE_INVALIDATE_NODE(pRoot, pNode, Key) \
+    do { \
+        KRBTREEPTR **ppEntry = &pRoot->maLookthru[KRB_CACHE_HASH(Key)]; \
+        if ((pNode) == KRB_GET_POINTER_NULL(ppEntry)) \
+            *ppEntry = KRB_NULL; \
+    } while (0)
+#else
+# define KRB_CACHE_INVALIDATE_NODE(pRoot, pNode, Key) do { } while (0)
+#endif
+
+#ifndef KRB_LOCKED
+# define KRB_WRITE_LOCK(pRoot)              do { } while (0)
+# define KRB_WRITE_UNLOCK(pRoot)            do { } while (0)
+# define KRB_READ_LOCK(pRoot)               do { } while (0)
+# define KRB_READ_UNLOCK(pRoot)             do { } while (0)
+#endif
+
+#ifdef KRB_OFFSET
+# define KRB_GET_POINTER(pp)                ( (KRBNODE *)((KIPTR)(pp) + *(pp)) )
+# define KRB_GET_POINTER_NULL(pp)           ( *(pp) != KRB_NULL ? KRB_GET_POINTER(pp) : NULL )
+# define KRB_SET_POINTER(pp, p)             ( (*(pp)) = ((KIPTR)(p) - (KIPTR)(pp)) )
+# define KRB_SET_POINTER_NULL(pp, pp2)      ( (*(pp)) = *(pp2) != KRB_NULL ? (KIPTR)KRB_GET_POINTER(pp2) - (KIPTR)(pp) : KRB_NULL )
+#else
+# define KRB_GET_POINTER(pp)                ( *(pp) )
+# define KRB_GET_POINTER_NULL(pp)           ( *(pp) )
+# define KRB_SET_POINTER(pp, p)             ( (*(pp)) = (p) )
+# define KRB_SET_POINTER_NULL(pp, pp2)      ( (*(pp)) = *(pp2) )
+#endif
+
+
+/** @def KRB_NULL
+ * The NULL 'pointer' equivalent.
+ */
+#ifdef KRB_OFFSET
+# define KRB_NULL     0
+#else
+# define KRB_NULL     NULL
+#endif
+
+#ifdef KRB_STD_KEY_COMP
+# define KRB_CMP_G(key1, key2)              ( (key1) >  (key2) )
+# define KRB_CMP_E(key1, key2)              ( (key1) == (key2) )
+# define KRB_CMP_NE(key1, key2)             ( (key1) != (key2) )
+# ifdef KRB_RANGE
+#  define KRB_R_IS_IDENTICAL(key1B, key2B, key1E, key2E)       ( (key1B) == (key2B) && (key1E) == (key2E) )
+#  define KRB_R_IS_INTERSECTING(key1B, key2B, key1E, key2E)    ( (key1B) <= (key2E) && (key1E) >= (key2B) )
+#  define KRB_R_IS_IN_RANGE(key1B, key1E, key2)                KRB_R_IS_INTERSECTING(key1B, key2, key1E, key2)
+# endif
+#endif
+
+#ifndef KRB_RANGE
+# define KRB_R_IS_INTERSECTING(key1B, key2B, key1E, key2E)     KRB_CMP_E(key1B, key2B)
+# define KRB_R_IS_IDENTICAL(key1B, key2B, key1E, key2E)        KRB_CMP_E(key1B, key2B)
+#endif
+
+
+/** Is the node red or black?
+ * @returns true / false
+ * @param   pNode       Pointer to the node in question.
+ * @remarks All NULL pointers are considered black leaf nodes.
+ */
+#define KRB_IS_RED(pNode)                   ( (pNode) != NULL && (pNode)->mfIsRed )
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Stack used to avoid recursive calls during insert and removal.
+ */
+typedef struct
+{
+    unsigned        cEntries;
+    KRBTREEPTR    *aEntries[KRB_MAX_STACK];
+} KRB_INT(STACK);
+
+/**
+ * The callback used by the Destroy and DoWithAll functions.
+ */
+typedef int (* KRB_TYPE(PFN,CALLBACK))(KRBNODE *, void *);
+
+#ifdef KRB_NEED_KRBROOT
+/**
+ * The Red-Black tree root structure.
+ */
+typedef struct
+{
+    KRBTREEPTR     mpRoot;
+# ifdef KRB_CACHE_SIZE
+    KRBTREEPTR     maLookthru[KRB_CACHE_SIZE];
+# endif
+} KRBROOT;
+#endif
+
+
+
+/**
+ * Initializes the root of the Red-Black tree.
+ *
+ * @param     pTree     Pointer to the root structure.
+ */
+KRB_DECL(void) KRB_FN(Init)(KRBROOT *pRoot)
+{
+#ifdef KRB_CACHE_SIZE
+    unsigned i;
+#endif
+
+    pRoot->mpRoot = KRB_NULL;
+#ifdef KRB_CACHE_SIZE
+    for (i = 0; i < (KRB_CACHE_SIZE); i++)
+        pRoot->maLookthru[i] = KRB_NULL;
+#endif
+}
+
+
+/**
+ * Rotates the tree to the left (shift direction) and recolors the nodes.
+ *
+ * @pre
+ *
+ *       2                 4
+ *      / \               / \
+ *     1   4     ==>     2   5
+ *        / \           / \
+ *       3   5         1   3
+ *
+ * @endpre
+ *
+ * @returns The new root node.
+ * @param   pRoot           The root node.
+ *
+ * @remarks This will not update any pointer <tt>to</tt> the root node!
+ */
+K_DECL_INLINE(KRBNODE *) KAVL_FN(RotateLeft)(KRBNODE *pRoot)
+{
+    KRBNODE *pNewRoot = pRoot->mRight;
+    pRoot->mRight     = pNewRoot->mLeft;
+    pNewRoot->mLeft   = pRoot;
+
+    pRoot->mfIsRed    = 1;
+    pNewRoot->mfIsRed = 0;
+    return pNewRoot;
+}
+
+
+/**
+ * Rotates the tree to the right (shift direction) and recolors the nodes.
+ *
+ * @pre
+ *
+ *         4             2
+ *        / \           / \
+ *       2   5   ==>   1   4
+ *      / \               / \
+ *     1   3             3   5
+ *
+ * @endpre
+ *
+ * @returns The new root node.
+ * @param   pRoot           The root node.
+ *
+ * @remarks This will not update any pointer <tt>to</tt> the root node!
+ */
+K_DECL_INLINE(KRBNODE *) KAVL_FN(RotateRight)(KRBNODE *pRoot)
+{
+    KRBNODE *pNewRoot = pRoot->mLeft;
+    pRoot->mLeft      = pNewRoot->mRight;
+    pNewRoot->mRight  = pRoot;
+
+    pRoot->mfIsRed    = 1;
+    pNewRoot->mfIsRed = 0;
+    return pNewRoot;
+}
+
+
+/**
+ * Performs a double left rotation with recoloring.
+ *
+ * @pre
+ *
+ *       2               2                    4
+ *      / \             / \                 /   \
+ *     1   6     ==>   1   4       ==>     2     6
+ *        / \             / \             / \   / \
+ *       4   7           3   6           1   3 5   7
+ *      / \                 / \
+ *     3   5               5   7
+ * @endpre
+ *
+ * @returns The new root node.
+ * @param   pRoot           The root node.
+ *
+ * @remarks This will not update any pointer <tt>to</tt> the root node!
+ */
+K_DECL_INLINE(KRBNODE *) KAVL_FN(DoubleRotateLeft)(KRBNODE *pRoot)
+{
+    pRoot->mRight = KAVL_FN(RotateRight)(pRoot->mRight);
+    return KAVL_FN(RotateLeft)(pRoot);
+}
+
+
+/**
+ * Performs a double right rotation with recoloring.
+ *
+ * @pre
+ *         6                 6                4
+ *        / \               / \             /   \
+ *       2   7             4   7           2     6
+ *      / \      ==>      / \      ==>    / \   / \
+ *     1   4             2   5           1   3 5   7
+ *        / \           / \
+ *       3   5         1   3
+ *
+ * @endpre
+ *
+ * @returns The new root node.
+ * @param   pRoot           The root node.
+ *
+ * @remarks This will not update any pointer <tt>to</tt> the root node!
+ */
+K_DECL_INLINE(KRBNODE *) KAVL_FN(DoubleRotateRight)(KRBNODE *pRoot)
+{
+    pRoot->mLeft = KAVL_FN(RotateLeft)(pRoot->mLeft);
+    return KAVL_FN(RotateRight)(pRoot);
+}
+
+
+/**
+ * Inserts a node into the Red-Black tree.
+ * @returns   K_TRUE if inserted.
+ *            K_FALSE if node exists in tree.
+ * @param     pRoot     Pointer to the Red-Back tree's root structure.
+ * @param     pNode     Pointer to the node which is to be added.
+ */
+KRB_DECL(KBOOL) KRB_FN(Insert)(KRBROOT *pRoot, KRBNODE *pNode)
+{
+    KRBTREEPTR        *ppCurNode = &pRoot->mpRoot;
+    register KRBKEY    Key       = pNode->mKey;
+#ifdef KRB_RANGE
+    register KRBKEY    KeyLast   = pNode->mKeyLast;
+#endif
+
+#ifdef KRB_RANGE
+    if (Key > KeyLast)
+        return K_FALSE;
+#endif
+
+    KRB_WRITE_LOCK(pRoot);
+
+    Stack.cEntries = 0;
+    while (*ppCurNode != KRB_NULL)
+    {
+        register KRBNODE *pCurNode = KRB_GET_POINTER(ppCurNode);
+
+        kHlpAssert(Stack.cEntries < KRB_MAX_STACK);
+        Stack.aEntries[Stack.cEntries++] = ppCurNode;
+#ifdef KRB_EQUAL_ALLOWED
+        if (KRB_R_IS_IDENTICAL(pCurNode->mKey, Key, pCurNode->mKeyLast, KeyLast))
+        {
+            /*
+             * If equal then we'll use a list of equal nodes.
+             */
+            pNode->mpLeft = pNode->mpRight = KRB_NULL;
+            pNode->mHeight = 0;
+            KRB_SET_POINTER_NULL(&pNode->mpList, &pCurNode->mpList);
+            KRB_SET_POINTER(&pCurNode->mpList, pNode);
+            KRB_WRITE_UNLOCK(pRoot);
+            return K_TRUE;
+        }
+#endif
+#ifdef KRB_CHECK_FOR_EQUAL_INSERT
+        if (KRB_R_IS_INTERSECTING(pCurNode->mKey, Key, pCurNode->mKeyLast, KeyLast))
+        {
+            KRB_WRITE_UNLOCK(pRoot);
+            return K_FALSE;
+        }
+#endif
+        if (KRB_CMP_G(pCurNode->mKey, Key))
+            ppCurNode = &pCurNode->mpLeft;
+        else
+            ppCurNode = &pCurNode->mpRight;
+    }
+
+    pNode->mpLeft = pNode->mpRight = KRB_NULL;
+#ifdef KRB_EQUAL_ALLOWED
+    pNode->mpList = KRB_NULL;
+#endif
+    pNode->mHeight = 1;
+    KRB_SET_POINTER(ppCurNode, pNode);
+
+    KRB_FN(Rebalance)(&Stack);
+
+    KRB_WRITE_UNLOCK(pRoot);
+    return K_TRUE;
+}
+
+
+/**
+ * Removes a node from the Red-Black tree.
+ * @returns   Pointer to the node.
+ * @param     pRoot     Pointer to the Red-Back tree's root structure.
+ * @param     Key       Key value of the node which is to be removed.
+ * @sketch    Find the node which is to be removed:
+ *            LOOP until not found
+ *            BEGIN
+ *                Add node pointer pointer to the AVL-stack.
+ *                IF the keys matches THEN break!
+ *                IF remove key < node key THEN
+ *                    left
+ *                ELSE
+ *                    right
+ *            END
+ *            IF found THEN
+ *            BEGIN
+ *                IF left node not empty THEN
+ *                BEGIN
+ *                    Find the right most node in the left tree while adding the pointer to the pointer to it's parent to the stack:
+ *                    Start at left node.
+ *                    LOOP until right node is empty
+ *                    BEGIN
+ *                        Add to stack.
+ *                        go right.
+ *                    END
+ *                    Link out the found node.
+ *                    Replace the node which is to be removed with the found node.
+ *                    Correct the stack entry for the pointer to the left tree.
+ *                END
+ *                ELSE
+ *                BEGIN
+ *                    Move up right node.
+ *                    Remove last stack entry.
+ *                END
+ *                Balance tree using stack.
+ *            END
+ *            return pointer to the removed node (if found).
+ */
+KRB_DECL(KRBNODE *) KRB_FN(Remove)(KRBROOT *pRoot, KRBKEY Key)
+{
+    KRB_INT(STACK)     Stack;
+    KRBTREEPTR        *ppDeleteNode = &pRoot->mpRoot;
+    register KRBNODE  *pDeleteNode;
+
+    KRB_WRITE_LOCK(pRoot);
+
+    Stack.cEntries = 0;
+    for (;;)
+    {
+        if (*ppDeleteNode == KRB_NULL)
+        {
+            KRB_WRITE_UNLOCK(pRoot);
+            return NULL;
+        }
+        pDeleteNode = KRB_GET_POINTER(ppDeleteNode);
+
+        kHlpAssert(Stack.cEntries < KRB_MAX_STACK);
+        Stack.aEntries[Stack.cEntries++] = ppDeleteNode;
+        if (KRB_CMP_E(pDeleteNode->mKey, Key))
+            break;
+
+        if (KRB_CMP_G(pDeleteNode->mKey, Key))
+            ppDeleteNode = &pDeleteNode->mpLeft;
+        else
+            ppDeleteNode = &pDeleteNode->mpRight;
+    }
+
+    if (pDeleteNode->mpLeft != KRB_NULL)
+    {
+        /* find the rightmost node in the left tree. */
+        const unsigned      iStackEntry = Stack.cEntries;
+        KRBTREEPTR        *ppLeftLeast = &pDeleteNode->mpLeft;
+        register KRBNODE  *pLeftLeast = KRB_GET_POINTER(ppLeftLeast);
+
+        while (pLeftLeast->mpRight != KRB_NULL)
+        {
+            kHlpAssert(Stack.cEntries < KRB_MAX_STACK);
+            Stack.aEntries[Stack.cEntries++] = ppLeftLeast;
+            ppLeftLeast = &pLeftLeast->mpRight;
+            pLeftLeast  = KRB_GET_POINTER(ppLeftLeast);
+        }
+
+        /* link out pLeftLeast */
+        KRB_SET_POINTER_NULL(ppLeftLeast, &pLeftLeast->mpLeft);
+
+        /* link it in place of the delete node. */
+        KRB_SET_POINTER_NULL(&pLeftLeast->mpLeft, &pDeleteNode->mpLeft);
+        KRB_SET_POINTER_NULL(&pLeftLeast->mpRight, &pDeleteNode->mpRight);
+        pLeftLeast->mHeight = pDeleteNode->mHeight;
+        KRB_SET_POINTER(ppDeleteNode, pLeftLeast);
+        Stack.aEntries[iStackEntry] = &pLeftLeast->mpLeft;
+    }
+    else
+    {
+        KRB_SET_POINTER_NULL(ppDeleteNode, &pDeleteNode->mpRight);
+        Stack.cEntries--;
+    }
+
+    KRB_FN(Rebalance)(&Stack);
+
+    KRB_CACHE_INVALIDATE_NODE(pRoot, pDeleteNode, Key);
+
+    KRB_WRITE_UNLOCK(pRoot);
+    return pDeleteNode;
+}
+
diff --git a/src/lib/kStuff/include/k/kRbTmpl/kRbDestroy.h b/src/lib/kStuff/include/k/kRbTmpl/kRbDestroy.h
new file mode 100644
index 0000000..0300a9a
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRbTmpl/kRbDestroy.h
@@ -0,0 +1,129 @@
+/* $Id: kRbDestroy.h 35 2009-11-08 19:39:03Z bird $ */
+/** @file
+ * kRbTmpl - Templated Red-Black Trees, Destroy the tree.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Destroys the specified tree, starting with the root node and working our way down.
+ *
+ * @returns 0 on success.
+ * @returns Return value from callback on failure. On failure, the tree will be in
+ *          an unbalanced condition and only further calls to the Destroy should be
+ *          made on it. Note that the node we fail on will be considered dead and
+ *          no action is taken to link it back into the tree.
+ * @param   pRoot           Pointer to the Red-Back tree's root structure.
+ * @param   pfnCallBack     Pointer to callback function.
+ * @param   pvUser          User parameter passed on to the callback function.
+ */
+KRB_DECL(int) KRB_FN(Destroy)(KRBROOT *pRoot, KRB_TYPE(PFN,CALLBACK) pfnCallBack, void *pvUser)
+{
+#ifdef KRB_CACHE_SIZE
+    unsigned    i;
+#endif
+    unsigned    cEntries;
+    KRBNODE    *apEntries[KRB_MAX_STACK];
+    int         rc;
+
+    KRB_WRITE_LOCK(pRoot);
+    if (pRoot->mpRoot == KRB_NULL)
+    {
+        KRB_WRITE_UNLOCK(pRoot);
+        return 0;
+    }
+
+#ifdef KRB_CACHE_SIZE
+    /*
+     * Kill the lookthru cache.
+     */
+    for (i = 0; i < (KRB_CACHE_SIZE); i++)
+        pRoot->maLookthru[i] = KRB_NULL;
+#endif
+
+    cEntries = 1;
+    apEntries[0] = KRB_GET_POINTER(&pRoot->mpRoot);
+    while (cEntries > 0)
+    {
+        /*
+         * Process the subtrees first.
+         */
+        KRBNODE *pNode = apEntries[cEntries - 1];
+        if (pNode->mpLeft != KRB_NULL)
+            apEntries[cEntries++] = KRB_GET_POINTER(&pNode->mpLeft);
+        else if (pNode->mpRight != KRB_NULL)
+            apEntries[cEntries++] = KRB_GET_POINTER(&pNode->mpRight);
+        else
+        {
+#ifdef KRB_EQUAL_ALLOWED
+            /*
+             * Process nodes with the same key.
+             */
+            while (pNode->pList != KRB_NULL)
+            {
+                KRBNODE *pEqual = KRB_GET_POINTER(&pNode->pList);
+                KRB_SET_POINTER(&pNode->pList, KRB_GET_POINTER_NULL(&pEqual->pList));
+                pEqual->pList = KRB_NULL;
+
+                rc = pfnCallBack(pEqual, pvUser);
+                if (rc)
+                {
+                    KRB_WRITE_UNLOCK(pRoot);
+                    return rc;
+                }
+            }
+#endif
+
+            /*
+             * Unlink the node.
+             */
+            if (--cEntries > 0)
+            {
+                KRBNODE *pParent = apEntries[cEntries - 1];
+                if (KRB_GET_POINTER(&pParent->mpLeft) == pNode)
+                    pParent->mpLeft = KRB_NULL;
+                else
+                    pParent->mpRight = KRB_NULL;
+            }
+            else
+                pRoot->mpRoot = KRB_NULL;
+
+            kHlpAssert(pNode->mpLeft == KRB_NULL);
+            kHlpAssert(pNode->mpRight == KRB_NULL);
+            rc = pfnCallBack(pNode, pvUser);
+            if (rc)
+            {
+                KRB_WRITE_UNLOCK(pRoot);
+                return rc;
+            }
+        }
+    } /* while */
+    kHlpAssert(pRoot->mpRoot == KRB_NULL);
+
+    KRB_WRITE_UNLOCK(pRoot);
+    return 0;
+}
+
diff --git a/src/lib/kStuff/include/k/kRbTmpl/kRbDoWithAll.h b/src/lib/kStuff/include/k/kRbTmpl/kRbDoWithAll.h
new file mode 100644
index 0000000..a9de71c
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRbTmpl/kRbDoWithAll.h
@@ -0,0 +1,166 @@
+/* $Id: kRbDoWithAll.h 35 2009-11-08 19:39:03Z bird $ */
+/** @file
+ * kRbTmpl - Templated Red-Black Trees, The Callback Iterator.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Stack used by DoWithAll to avoid recusive function calls.
+ */
+typedef struct
+{
+    unsigned        cEntries;
+    KRBNODE        *aEntries[KRB_MAX_STACK];
+    char            achFlags[KRB_MAX_STACK];
+    KRBROOT        pRoot;
+} KRB_INT(STACK2);
+
+
+/**
+ * Iterates thru all nodes in the given tree.
+ *
+ * @returns   0 on success. Return from callback on failure.
+ * @param     pRoot        Pointer to the Red-Back tree's root structure.
+ * @param     fFromLeft    K_TRUE:  Left to right.
+ *                         K_FALSE: Right to left.
+ * @param     pfnCallBack  Pointer to callback function.
+ * @param     pvUser       User parameter passed on to the callback function.
+ */
+KRB_DECL(int) KRB_FN(DoWithAll)(KRBROOT *pRoot, KBOOL fFromLeft, KRB_TYPE(PFN,CALLBACK) pfnCallBack, void *pvUser)
+{
+    KRB_INT(STACK2)     Stack;
+    KRBNODE            *pNode;
+#ifdef KRB_EQUAL_ALLOWED
+    KRBNODE            *pEqual;
+#endif
+    int                 rc;
+
+    KRB_READ_LOCK(pRoot);
+    if (pRoot->mpRoot == KRB_NULL)
+    {
+        KRB_READ_UNLOCK(pRoot);
+        return 0;
+    }
+
+    Stack.cEntries = 1;
+    Stack.achFlags[0] = 0;
+    Stack.aEntries[0] = KRB_GET_POINTER(&pRoot->mpRoot);
+
+    if (fFromLeft)
+    {   /* from left */
+        while (Stack.cEntries > 0)
+        {
+            pNode = Stack.aEntries[Stack.cEntries - 1];
+
+            /* left */
+            if (!Stack.achFlags[Stack.cEntries - 1]++)
+            {
+                if (pNode->mpLeft != KRB_NULL)
+                {
+                    Stack.achFlags[Stack.cEntries] = 0; /* 0 first, 1 last */
+                    Stack.aEntries[Stack.cEntries++] = KRB_GET_POINTER(&pNode->mpLeft);
+                    continue;
+                }
+            }
+
+            /* center */
+            rc = pfnCallBack(pNode, pvUser);
+            if (rc)
+                return rc;
+#ifdef KRB_EQUAL_ALLOWED
+            if (pNode->mpList != KRB_NULL)
+                for (pEqual = KRB_GET_POINTER(&pNode->mpList); pEqual; pEqual = KRB_GET_POINTER_NULL(&pEqual->mpList))
+                {
+                    rc = pfnCallBack(pEqual, pvUser);
+                    if (rc)
+                    {
+                        KRB_READ_UNLOCK(pRoot);
+                        return rc;
+                    }
+                }
+#endif
+
+            /* right */
+            Stack.cEntries--;
+            if (pNode->mpRight != KRB_NULL)
+            {
+                Stack.achFlags[Stack.cEntries] = 0;
+                Stack.aEntries[Stack.cEntries++] = KRB_GET_POINTER(&pNode->mpRight);
+            }
+        } /* while */
+    }
+    else
+    {   /* from right */
+        while (Stack.cEntries > 0)
+        {
+            pNode = Stack.aEntries[Stack.cEntries - 1];
+
+            /* right */
+            if (!Stack.achFlags[Stack.cEntries - 1]++)
+            {
+                if (pNode->mpRight != KRB_NULL)
+                {
+                    Stack.achFlags[Stack.cEntries] = 0;  /* 0 first, 1 last */
+                    Stack.aEntries[Stack.cEntries++] = KRB_GET_POINTER(&pNode->mpRight);
+                    continue;
+                }
+            }
+
+            /* center */
+            rc = pfnCallBack(pNode, pvUser);
+            if (rc)
+                return rc;
+#ifdef KRB_EQUAL_ALLOWED
+            if (pNode->mpList != KRB_NULL)
+                for (pEqual = KRB_GET_POINTER(&pNode->mpList); pEqual; pEqual = KRB_GET_POINTER_NULL(&pEqual->pList))
+                {
+                    rc = pfnCallBack(pEqual, pvUser);
+                    if (rc)
+                    {
+                        KRB_READ_UNLOCK(pRoot);
+                        return rc;
+                    }
+                }
+#endif
+
+            /* left */
+            Stack.cEntries--;
+            if (pNode->mpLeft != KRB_NULL)
+            {
+                Stack.achFlags[Stack.cEntries] = 0;
+                Stack.aEntries[Stack.cEntries++] = KRB_GET_POINTER(&pNode->mpLeft);
+            }
+        } /* while */
+    }
+
+    KRB_READ_UNLOCK(pRoot);
+    return 0;
+}
+
diff --git a/src/lib/kStuff/include/k/kRbTmpl/kRbEnum.h b/src/lib/kStuff/include/k/kRbTmpl/kRbEnum.h
new file mode 100644
index 0000000..d022410
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRbTmpl/kRbEnum.h
@@ -0,0 +1,187 @@
+/* $Id: kRbEnum.h 35 2009-11-08 19:39:03Z bird $ */
+/** @file
+ * kRbTmpl - Templated Red-Black Trees, Node Enumeration.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Enumeration control data.
+ *
+ * This is initialized by BeginEnum and used by GetNext to figure out what
+ * to do next.
+ */
+typedef struct KRB_TYPE(,ENUMDATA)
+{
+    KBOOL               fFromLeft;
+    KI8                 cEntries;
+    KU8                 achFlags[KRB_MAX_STACK];
+    KRBNODE *           aEntries[KRB_MAX_STACK];
+} KRB_TYPE(,ENUMDATA), *KRB_TYPE(P,ENUMDATA);
+
+
+/**
+ * Ends an enumeration.
+ *
+ * The purpose of this function is to unlock the tree should the Red-Black tree
+ * implementation include locking.  It's good practice to call it anyway even if
+ * the tree doesn't do any locking.
+ *
+ * @param   pEnumData   Pointer to enumeration control data.
+ */
+KRB_DECL(void) KRB_FN(EndEnum)(KRB_TYPE(,ENUMDATA) *pEnumData)
+{
+    KRBROOT pRoot = pEnumData->pRoot;
+    pEnumData->pRoot = NULL;
+    if (pRoot)
+        KRB_READ_UNLOCK(pEnumData->pRoot);
+}
+
+
+/**
+ * Get the next node in the tree enumeration.
+ *
+ * The current implementation of this function willl not walk the mpList
+ * chain like the DoWithAll function does. This may be changed later.
+ *
+ * @returns Pointer to the next node in the tree.
+ *          NULL is returned when the end of the tree has been reached,
+ *          it is not necessary to call EndEnum in this case.
+ * @param   pEnumData   Pointer to enumeration control data.
+ */
+KRB_DECL(KRBNODE *) KRB_FN(GetNext)(KRB_TYPE(,ENUMDATA) *pEnumData)
+{
+    if (pEnumData->fFromLeft)
+    {   /* from left */
+        while (pEnumData->cEntries > 0)
+        {
+            KRBNODE *pNode = pEnumData->aEntries[pEnumData->cEntries - 1];
+
+            /* left */
+            if (pEnumData->achFlags[pEnumData->cEntries - 1] == 0)
+            {
+                pEnumData->achFlags[pEnumData->cEntries - 1]++;
+                if (pNode->mpLeft != KRB_NULL)
+                {
+                    pEnumData->achFlags[pEnumData->cEntries] = 0; /* 0 left, 1 center, 2 right */
+                    pEnumData->aEntries[pEnumData->cEntries++] = KRB_GET_POINTER(&pNode->mpLeft);
+                    continue;
+                }
+            }
+
+            /* center */
+            if (pEnumData->achFlags[pEnumData->cEntries - 1] == 1)
+            {
+                pEnumData->achFlags[pEnumData->cEntries - 1]++;
+                return pNode;
+            }
+
+            /* right */
+            pEnumData->cEntries--;
+            if (pNode->mpRight != KRB_NULL)
+            {
+                pEnumData->achFlags[pEnumData->cEntries] = 0;
+                pEnumData->aEntries[pEnumData->cEntries++] = KRB_GET_POINTER(&pNode->mpRight);
+            }
+        } /* while */
+    }
+    else
+    {   /* from right */
+        while (pEnumData->cEntries > 0)
+        {
+            KRBNODE *pNode = pEnumData->aEntries[pEnumData->cEntries - 1];
+
+            /* right */
+            if (pEnumData->achFlags[pEnumData->cEntries - 1] == 0)
+            {
+                pEnumData->achFlags[pEnumData->cEntries - 1]++;
+                if (pNode->mpRight != KRB_NULL)
+                {
+                    pEnumData->achFlags[pEnumData->cEntries] = 0;  /* 0 right, 1 center, 2 left */
+                    pEnumData->aEntries[pEnumData->cEntries++] = KRB_GET_POINTER(&pNode->mpRight);
+                    continue;
+                }
+            }
+
+            /* center */
+            if (pEnumData->achFlags[pEnumData->cEntries - 1] == 1)
+            {
+                pEnumData->achFlags[pEnumData->cEntries - 1]++;
+                return pNode;
+            }
+
+            /* left */
+            pEnumData->cEntries--;
+            if (pNode->mpLeft != KRB_NULL)
+            {
+                pEnumData->achFlags[pEnumData->cEntries] = 0;
+                pEnumData->aEntries[pEnumData->cEntries++] = KRB_GET_POINTER(&pNode->mpLeft);
+            }
+        } /* while */
+    }
+
+    /*
+     * Call EndEnum.
+     */
+    KRB_FN(EndEnum)(pEnumData);
+    return NULL;
+}
+
+
+/**
+ * Starts an enumeration of all nodes in the given tree.
+ *
+ * The current implementation of this function will not walk the mpList
+ * chain like the DoWithAll function does. This may be changed later.
+ *
+ * @returns Pointer to the first node in the enumeration.
+ *          If NULL is returned the tree is empty calling EndEnum isn't
+ *          strictly necessary (although it will do no harm).
+ * @param   pRoot           Pointer to the Red-Back tree's root structure.
+ * @param   pEnumData       Pointer to enumeration control data.
+ * @param   fFromLeft       K_TRUE:  Left to right.
+ *                          K_FALSE: Right to left.
+ */
+KRB_DECL(KRBNODE *) KRB_FN(BeginEnum)(KRBROOT *pRoot, KRB_TYPE(,ENUMDATA) *pEnumData, KBOOL fFromLeft)
+{
+    KRB_READ_LOCK(pRoot);
+    pEnumData->pRoot = pRoot;
+    if (pRoot->mpRoot != KRB_NULL)
+    {
+        pEnumData->fFromLeft = fFromLeft;
+        pEnumData->cEntries = 1;
+        pEnumData->aEntries[0] = KRB_GET_POINTER(pRoot->mpRoot);
+        pEnumData->achFlags[0] = 0;
+    }
+    else
+        pEnumData->cEntries = 0;
+
+    return KRB_FN(GetNext)(pEnumData);
+}
+
diff --git a/src/lib/kStuff/include/k/kRbTmpl/kRbGet.h b/src/lib/kStuff/include/k/kRbTmpl/kRbGet.h
new file mode 100644
index 0000000..b03d4e1
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRbTmpl/kRbGet.h
@@ -0,0 +1,89 @@
+/* $Id: kRbGet.h 35 2009-11-08 19:39:03Z bird $ */
+/** @file
+ * kRbTmpl - Templated Red-Black Trees, Get a Node.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Gets a node from the tree (does not remove it!)
+ *
+ * @returns Pointer to the node holding the given key.
+ * @param   pRoot       Pointer to the Red-Back tree's root structure.
+ * @param   Key         Key value of the node which is to be found.
+ */
+KRB_DECL(KRBNODE *) KRB_FN(Get)(KRBROOT *pRoot, KRBKEY Key)
+{
+    KRBNODE *pNode;
+#ifdef KRB_CACHE_SIZE
+    KRBTREEPTR *ppEntry;
+#endif
+
+    KRB_READ_LOCK(pRoot);
+    if (pRoot->mpRoot == KRB_NULL)
+    {
+        KRB_READ_UNLOCK(pRoot);
+        return NULL;
+    }
+
+#ifdef KRB_CACHE_SIZE
+    ppEntry = &pRoot->maLookthru[KRB_CACHE_HASH(Key)];
+    pNode = KRB_GET_POINTER_NULL(ppEntry);
+    if (!pNode || KRB_CMP_NE(pNode->mKey, Key))
+#endif
+    {
+        pNode = KRB_GET_POINTER(&pRoot->mpRoot);
+        while (KRB_CMP_NE(pNode->mKey, Key))
+        {
+            if (KRB_CMP_G(pNode->mKey, Key))
+            {
+                if (pNode->mpLeft == KRB_NULL)
+                {
+                    KRB_READ_UNLOCK(pRoot);
+                    return NULL;
+                }
+                pNode = KRB_GET_POINTER(&pNode->mpLeft);
+            }
+            else
+            {
+                if (pNode->mpRight == KRB_NULL)
+                {
+                    KRB_READ_UNLOCK(pRoot);
+                    return NULL;
+                }
+                pNode = KRB_GET_POINTER(&pNode->mpRight);
+            }
+        }
+
+#ifdef KRB_CACHE_SIZE
+        KRB_SET_POINTER(ppEntry, pNode);
+#endif
+    }
+
+    KRB_READ_UNLOCK(pRoot);
+    return pNode;
+}
+
diff --git a/src/lib/kStuff/include/k/kRbTmpl/kRbGetBestFit.h b/src/lib/kStuff/include/k/kRbTmpl/kRbGetBestFit.h
new file mode 100644
index 0000000..bfda27a
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRbTmpl/kRbGetBestFit.h
@@ -0,0 +1,112 @@
+/* $Id: kRbGetBestFit.h 35 2009-11-08 19:39:03Z bird $ */
+/** @file
+ * kRbTmpl - Templated Red-Black Trees, Get Best Fitting Node.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Finds the best fitting node in the tree for the given Key value.
+ *
+ * @returns Pointer to the best fitting node found.
+ * @param   pRoot           Pointer to the Red-Back tree's root structure.
+ * @param   Key             The Key of which is to be found a best fitting match for..
+ * @param   fAbove          K_TRUE:  Returned node is have the closest key to Key from above.
+ *                          K_FALSE: Returned node is have the closest key to Key from below.
+ * @sketch  The best fitting node is always located in the searchpath above you.
+ *          >= (above): The node where you last turned left.
+ *          <= (below): the node where you last turned right.
+ */
+KRB_DECL(KRBNODE *) KRB_FN(GetBestFit)(KRBROOT *pRoot, KRBKEY Key, KBOOL fAbove)
+{
+    register KRBNODE  *pNode;
+    KRBNODE           *pNodeLast;
+
+    KRB_READ_LOCK(pLook);
+    if (pRoot->mpRoot == KRB_NULL)
+    {
+        KRB_READ_UNLOCK(pLook);
+        return NULL;
+    }
+
+    pNode = KRB_GET_POINTER(&pRoot->mpRoot);
+    pNodeLast = NULL;
+    if (fAbove)
+    {   /* pNode->mKey >= Key */
+        while (KRB_CMP_NE(pNode->mKey, Key))
+        {
+            if (KRB_CMP_G(pNode->mKey, Key))
+            {
+                if (pNode->mpLeft == KRB_NULL)
+                {
+                    KRB_READ_UNLOCK(pLook);
+                    return pNode;
+                }
+                pNodeLast = pNode;
+                pNode = KRB_GET_POINTER(&pNode->mpLeft);
+            }
+            else
+            {
+                if (pNode->mpRight == KRB_NULL)
+                {
+                    KRB_READ_UNLOCK(pLook);
+                    return pNodeLast;
+                }
+                pNode = KRB_GET_POINTER(&pNode->mpRight);
+            }
+        }
+    }
+    else
+    {   /* pNode->mKey <= Key */
+        while (KRB_CMP_NE(pNode->mKey, Key))
+        {
+            if (KRB_CMP_G(pNode->mKey, Key))
+            {
+                if (pNode->mpLeft == KRB_NULL)
+                {
+                    KRB_READ_UNLOCK(pLook);
+                    return pNodeLast;
+                }
+                pNode = KRB_GET_POINTER(&pNode->mpLeft);
+            }
+            else
+            {
+                if (pNode->mpRight == KRB_NULL)
+                {
+                    KRB_READ_UNLOCK(pLook);
+                    return pNode;
+                }
+                pNodeLast = pNode;
+                pNode = KRB_GET_POINTER(&pNode->mpRight);
+            }
+        }
+    }
+
+    /* perfect match or nothing. */
+    KRB_READ_UNLOCK(pLook);
+    return pNode;
+}
+
diff --git a/src/lib/kStuff/include/k/kRbTmpl/kRbGetWithParent.h b/src/lib/kStuff/include/k/kRbTmpl/kRbGetWithParent.h
new file mode 100644
index 0000000..05a7d8c
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRbTmpl/kRbGetWithParent.h
@@ -0,0 +1,65 @@
+/* $Id: kRbGetWithParent.h 35 2009-11-08 19:39:03Z bird $ */
+/** @file
+ * kRbTmpl - Templated Red-Black Trees, Get Node With Parent.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Gets a node from the tree and its parent node (if any).
+ * The tree remains unchanged.
+ *
+ * @returns Pointer to the node holding the given key.
+ * @param   pRoot       Pointer to the Red-Back tree's root structure.
+ * @param   ppParent    Pointer to a variable which will hold the pointer to the partent node on
+ *                      return. When no node is found, this will hold the last searched node.
+ * @param   Key         Key value of the node which is to be found.
+ */
+KRB_DECL(KRBNODE *) KRB_FN(GetWithParent)(KRBROOT *pRoot, KRBNODE **ppParent, KRBKEY Key)
+{
+    register KRBNODE *pNode;
+    register KRBNODE *pParent;
+
+    KRB_READ_LOCK(pRoot);
+
+    pParent = NULL;
+    pNode = KRB_GET_POINTER_NULL(&pRoot->mpRoot);
+    while (     pNode != NULL
+           &&   KRB_CMP_NE(pNode->mKey, Key))
+    {
+        pParent = pNode;
+        if (KRB_CMP_G(pNode->mKey, Key))
+            pNode = KRB_GET_POINTER_NULL(&pNode->mpLeft);
+        else
+            pNode = KRB_GET_POINTER_NULL(&pNode->mpRight);
+    }
+
+    KRB_READ_UNLOCK(pRoot);
+
+    *ppParent = pParent;
+    return pNode;
+}
+
diff --git a/src/lib/kStuff/include/k/kRbTmpl/kRbRemove2.h b/src/lib/kStuff/include/k/kRbTmpl/kRbRemove2.h
new file mode 100644
index 0000000..deed81d
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRbTmpl/kRbRemove2.h
@@ -0,0 +1,133 @@
+/* $Id: kRbRemove2.h 35 2009-11-08 19:39:03Z bird $ */
+/** @file
+ * kRbTmpl - Templated Red-Black Trees, Remove A Specific Node.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Removes the specified node from the tree.
+ *
+ * @returns Pointer to the removed node (NULL if not in the tree)
+ * @param   pRoot       Pointer to the Red-Back tree's root structure.
+ * @param   Key         The Key of which is to be found a best fitting match for..
+ *
+ * @remark  This implementation isn't the most efficient, but this short and
+ *          easier to manage.
+ */
+KRB_DECL(KRBNODE *) KRB_FN(Remove2)(KRBROOT *pRoot, KRBNODE *pNode)
+{
+#ifdef KRB_EQUAL_ALLOWED
+    /*
+     * Find the right node by key and see if it's what we want.
+     */
+    KRBNODE *pParent;
+    KRBNODE *pCurNode = KRB_FN(GetWithParent)(pRoot, pNode->mKey, &pParent);
+    if (!pCurNode)
+        return NULL;
+    KRB_WRITE_LOCK(pRoot); /** @todo the locking here isn't 100% sane. The only way to archive that is by no calling worker functions. */
+    if (pCurNode != pNode)
+    {
+        /*
+         * It's not the one we want, but it could be in the duplicate list.
+         */
+        while (pCurNode->mpList != KRB_NULL)
+        {
+            KRBNODE *pNext = KRB_GET_POINTER(&pCurNode->mpList);
+            if (pNext == pNode)
+            {
+                KRB_SET_POINTER_NULL(&pCurNode->mpList, KRB_GET_POINTER_NULL(&pNode->mpList));
+                pNode->mpList = KRB_NULL;
+                KRB_CACHE_INVALIDATE_NODE(pRoot, pNode, pNode->mKey);
+                KRB_WRITE_UNLOCK(pRoot);
+                return pNode;
+            }
+            pCurNode = pNext;
+        }
+        KRB_WRITE_UNLOCK(pRoot);
+        return NULL;
+    }
+
+    /*
+     * Ok, it's the one we want alright.
+     *
+     * Simply remove it if it's the only one with they Key,
+     * if there are duplicates we'll have to unlink it and
+     * insert the first duplicate in our place.
+     */
+    if (pNode->mpList == KRB_NULL)
+    {
+        KRB_WRITE_UNLOCK(pRoot);
+        KRB_FN(Remove)(pRoot, pNode->mKey);
+    }
+    else
+    {
+        KRBNODE *pNewUs = KRB_GET_POINTER(&pNode->mpList);
+
+        pNewUs->mHeight = pNode->mHeight;
+
+        if (pNode->mpLeft != KRB_NULL)
+            KRB_SET_POINTER(&pNewUs->mpLeft, KRB_GET_POINTER(&pNode->mpLeft))
+        else
+            pNewUs->mpLeft = KRB_NULL;
+
+        if (pNode->mpRight != KRB_NULL)
+            KRB_SET_POINTER(&pNewUs->mpRight, KRB_GET_POINTER(&pNode->mpRight))
+        else
+            pNewUs->mpRight = KRB_NULL;
+
+        if (pParent)
+        {
+            if (KRB_GET_POINTER_NULL(&pParent->mpLeft) == pNode)
+                KRB_SET_POINTER(&pParent->mpLeft, pNewUs);
+            else
+                KRB_SET_POINTER(&pParent->mpRight, pNewUs);
+        }
+        else
+            KRB_SET_POINTER(&pRoot->mpRoot, pNewUs);
+
+        KRB_CACHE_INVALIDATE_NODE(pRoot, pNode, pNode->mKey);
+        KRB_WRITE_UNLOCK(pRoot);
+    }
+
+    return pNode;
+
+#else
+    /*
+     * Delete it, if we got the wrong one, reinsert it.
+     *
+     * This ASSUMS that the caller is NOT going to hand us a lot
+     * of wrong nodes but just uses this API for his convenience.
+     */
+    KRBNODE *pRemovedNode = KRB_FN(Remove)(pRoot, pNode->mKey);
+    if (pRemovedNode == pNode)
+        return pRemovedNode;
+
+    KRB_FN(Insert)(pRoot, pRemovedNode);
+    return NULL;
+#endif
+}
+
diff --git a/src/lib/kStuff/include/k/kRbTmpl/kRbRemoveBestFit.h b/src/lib/kStuff/include/k/kRbTmpl/kRbRemoveBestFit.h
new file mode 100644
index 0000000..17fc66d
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRbTmpl/kRbRemoveBestFit.h
@@ -0,0 +1,70 @@
+/* $Id: kRbRemoveBestFit.h 35 2009-11-08 19:39:03Z bird $ */
+/** @file
+ * kRbTmpl - Templated Red-Black Trees, Remove Best Fitting Node.
+ */
+
+/*
+ * Copyright (c) 1999-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Finds the best fitting node in the tree for the given Key value and removes the node.
+ *
+ * @returns Pointer to the removed node.
+ * @param   pRoot       Pointer to the Red-Back tree's root structure.
+ * @param   Key         The Key of which is to be found a best fitting match for..
+ * @param   fAbove      K_TRUE:  Returned node is have the closest key to Key from above.
+ *                      K_FALSE: Returned node is have the closest key to Key from below.
+ *
+ * @remark  This implementation uses GetBestFit and then Remove and might therefore
+ *          not be the most optimal kind of implementation, but it reduces the complexity
+ *          code size, and the likelyhood for bugs.
+ */
+KRB_DECL(KRBNODE *) KRB_FN(RemoveBestFit)(KRBROOT *pRoot, KRBKEY Key, KBOOL fAbove)
+{
+    /*
+     * If we find anything we'll have to remove the node and return it.
+     * Now, if duplicate keys are allowed we'll remove a duplicate before
+     * removing the in-tree node as this is way cheaper.
+     */
+    KRBNODE *pNode = KRB_FN(GetBestFit)(pRoot, Key, fAbove);
+    if (pNode != NULL)
+    {
+#ifdef KRB_EQUAL_ALLOWED
+        KRB_WRITE_LOCK(pRoot); /** @todo the locking isn't quite sane here. :-/ */
+        if (pNode->mpList != KRB_NULL)
+        {
+            KRBNODE *pRet = KRB_GET_POINTER(&pNode->mpList);
+            KRB_SET_POINTER_NULL(&pNode->mpList, &pRet->mpList);
+            KRB_CACHE_INVALIDATE_NODE(pRoot, pNode, pNode->mKey);
+            KRB_WRITE_UNLOCK(pRoot);
+            return pRet;
+        }
+        KRB_WRITE_UNLOCK(pRoot);
+#endif
+        pNode = KRB_FN(Remove)(pRoot, pNode->mKey);
+    }
+    return pNode;
+}
+
diff --git a/src/lib/kStuff/include/k/kRbTmpl/kRbUndef.h b/src/lib/kStuff/include/k/kRbTmpl/kRbUndef.h
new file mode 100644
index 0000000..793108b
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRbTmpl/kRbUndef.h
@@ -0,0 +1,79 @@
+/* $Id: kRbUndef.h 35 2009-11-08 19:39:03Z bird $ */
+/** @file
+ * kRbTmpl - Undefines All Macros (both config and temp).
+ */
+
+/*
+ * Copyright (c) 2006-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * The configuration.
+ */
+#undef KRB_EQUAL_ALLOWED
+#undef KRB_CHECK_FOR_EQUAL_INSERT
+#undef KRB_MAX_STACK
+#undef KRB_RANGE
+#undef KRB_OFFSET
+#undef KRB_STD_KEY_COMP
+#undef KRB_CACHE_SIZE
+#undef KRB_CACHE_HASH
+#undef KRB_LOCKED
+#undef KRB_WRITE_LOCK
+#undef KRB_WRITE_UNLOCK
+#undef KRB_READ_LOCK
+#undef KRB_READ_UNLOCK
+#undef KRBKEY
+#undef KRBNODE
+#undef KRBTREEPTR
+#undef KRBROOT
+#undef KRB_FN
+#undef KRB_TYPE
+#undef KRB_INT
+#undef KRB_DECL
+#undef mKey
+#undef mKeyLast
+#undef mfIsRed
+#undef mpLeft
+#undef mpRight
+#undef mpList
+#undef mpRoot
+#undef maLookthru
+#undef KRB_CMP_G
+#undef KRB_CMP_E
+#undef KRB_CMP_NE
+#undef KRB_R_IS_IDENTICAL
+#undef KRB_R_IS_INTERSECTING
+#undef KRB_R_IS_IN_RANGE
+
+/*
+ * Internal ones.
+ */
+#undef KRB_IS_RED
+#undef KRB_NULL
+#undef KRB_GET_POINTER
+#undef KRB_GET_POINTER_NULL
+#undef KRB_SET_POINTER
+#undef KRB_SET_POINTER_NULL
+
diff --git a/src/lib/kStuff/include/k/kRbU32.h b/src/lib/kStuff/include/k/kRbU32.h
new file mode 100644
index 0000000..3b68b5e
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRbU32.h
@@ -0,0 +1,68 @@
+/* $Id: kRbU32.h 35 2009-11-08 19:39:03Z bird $ */
+/** @file
+ * kRb - Red-Black Tree Implementation, KU32 keys.
+ */
+
+/*
+ * Copyright (c) 2006-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kRbU32_h___
+#define ___k_kRbU32_h___
+
+typedef struct KRBU32
+{
+    KU32                mKey;
+    KBOOL               mfRed;
+    struct KRBU32      *mpLeft;
+    struct KRBU32      *mpRight;
+} KRBU32;
+typedef KRBU32  *PRBU32;
+typedef KRBU32 **PPRBU32;
+
+/*#define KRB_EQUAL_ALLOWED*/
+#define KRB_CHECK_FOR_EQUAL_INSERT
+/*#define KRB_RANGE */
+/*#define KRB_OFFSET */
+#define KRB_MAX_STACK           48
+#define KRB_STD_KEY_COMP
+#define KRBKEY                  KU32
+#define KRBNODE                 KRBU32
+#define KRB_FN(name)            kRbU32 ## name
+#define KRB_TYPE(prefix,name)   prefix ## KRBU32 ## name
+#define KRB_INT(name)           KRBU32INT ## name
+#define KRB_DECL(rettype)       K_DECL_INLINE(rettype)
+
+#include <k/kRbTmpl/kRbBase.h>
+#include <k/kRbTmpl/kRbDoWithAll.h>
+#include <k/kRbTmpl/kRbEnum.h>
+#include <k/kRbTmpl/kRbGet.h>
+#include <k/kRbTmpl/kRbGetBestFit.h>
+#include <k/kRbTmpl/kRbGetWithParent.h>
+#include <k/kRbTmpl/kRbRemove2.h>
+#include <k/kRbTmpl/kRbRemoveBestFit.h>
+#include <k/kRbTmpl/kRbUndef.h>
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kRdr.h b/src/lib/kStuff/include/k/kRdr.h
new file mode 100644
index 0000000..7e0b5e8
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRdr.h
@@ -0,0 +1,86 @@
+/* $Id: kRdr.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kRdr - The File Provider.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___kRdr_h___
+#define ___kRdr_h___
+
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+
+/** @defgroup grp_kRdr      kRdr - The File Provider
+ * @{ */
+
+/** @def KRDR_DECL
+ * Declares a kRdr function according to build context.
+ * @param type          The return type.
+ */
+#if defined(KRDR_BUILDING_DYNAMIC)
+# define KRDR_DECL(type)    K_DECL_EXPORT(type)
+#elif defined(KRDR_BUILT_DYNAMIC)
+# define KRDR_DECL(type)    K_DECL_IMPORT(type)
+#else
+# define KRDR_DECL(type)    type
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+KRDR_DECL(int)      kRdrOpen(   PPKRDR ppRdr, const char *pszFilename);
+KRDR_DECL(int)      kRdrClose(    PKRDR pRdr);
+KRDR_DECL(int)      kRdrRead(     PKRDR pRdr, void *pvBuf, KSIZE cb, KFOFF off);
+KRDR_DECL(int)      kRdrAllMap(   PKRDR pRdr, const void **ppvBits);
+KRDR_DECL(int)      kRdrAllUnmap( PKRDR pRdr, const void *pvBits);
+KRDR_DECL(KFOFF)    kRdrSize(     PKRDR pRdr);
+KRDR_DECL(KFOFF)    kRdrTell(     PKRDR pRdr);
+KRDR_DECL(const char *) kRdrName( PKRDR pRdr);
+KRDR_DECL(KIPTR)    kRdrNativeFH( PKRDR pRdr);
+KRDR_DECL(KSIZE)    kRdrPageSize( PKRDR pRdr);
+KRDR_DECL(int)      kRdrMap(      PKRDR pRdr, void **ppvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fFixed);
+KRDR_DECL(int)      kRdrRefresh(  PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments);
+KRDR_DECL(int)      kRdrProtect(  PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fUnprotectOrProtect);
+KRDR_DECL(int)      kRdrUnmap(    PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments);
+KRDR_DECL(void)     kRdrDone(     PKRDR pRdr);
+
+KRDR_DECL(int)      kRdrBufOpen(PPKRDR ppRdr, const char *pszFilename);
+KRDR_DECL(int)      kRdrBufWrap(PPKRDR ppRdr, PKRDR pRdr, KBOOL fCloseIt);
+KRDR_DECL(KBOOL)    kRdrBufIsBuffered(PKRDR pRdr);
+KRDR_DECL(int)      kRdrBufLine(PKRDR pRdr, char *pszLine, KSIZE cbLine);
+KRDR_DECL(int)      kRdrBufLineEx(PKRDR pRdr, char *pszLine, KSIZE *pcbLine);
+KRDR_DECL(const char *) kRdrBufLineQ(PKRDR pRdr);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kRdrAll.h b/src/lib/kStuff/include/k/kRdrAll.h
new file mode 100644
index 0000000..78f946f
--- /dev/null
+++ b/src/lib/kStuff/include/k/kRdrAll.h
@@ -0,0 +1,127 @@
+/* $Id: kRdrAll.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kRdr - The File Provider, All Details and Dependencies Included.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kRdrAll_h___
+#define ___k_kRdrAll_h___
+
+#include <k/kDefs.h>
+#include <k/kLdr.h>
+#include <k/kRdr.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/** @defgroup grp_kRdrAll   All
+ * @addtogroup grp_kRdr
+ * @{
+ */
+
+/**
+ * File provider instance operations.
+ */
+typedef struct KRDROPS
+{
+    /** The name of this file provider. */
+    const char *pszName;
+    /** Pointer to the next file provider. */
+    const struct KRDROPS *pNext;
+
+    /** Try create a new file provider instance.
+     *
+     * @returns 0 on success, OS specific error code on failure.
+     * @param   ppRdr       Where to store the file provider instance.
+     * @param   pszFilename The filename to open.
+     */
+    int     (* pfnCreate)(  PPKRDR ppRdr, const char *pszFilename);
+    /** Destroy the file provider instance.
+     *
+     * @returns 0 on success, OS specific error code on failure.
+     *          On failure, the file provider instance will be in an indeterminate state - don't touch it!
+     * @param   pRdr        The file provider instance.
+     */
+    int     (* pfnDestroy)( PKRDR pRdr);
+    /** @copydoc kRdrRead */
+    int     (* pfnRead)(    PKRDR pRdr, void *pvBuf, KSIZE cb, KFOFF off);
+    /** @copydoc kRdrAllMap */
+    int     (* pfnAllMap)(  PKRDR pRdr, const void **ppvBits);
+    /** @copydoc kRdrAllUnmap */
+    int     (* pfnAllUnmap)(PKRDR pRdr, const void *pvBits);
+    /** @copydoc kRdrSize */
+    KFOFF   (* pfnSize)(    PKRDR pRdr);
+    /** @copydoc kRdrTell */
+    KFOFF   (* pfnTell)(    PKRDR pRdr);
+    /** @copydoc kRdrName */
+    const char * (* pfnName)(PKRDR pRdr);
+    /** @copydoc kRdrNativeFH */
+    KIPTR  (* pfnNativeFH)(PKRDR pRdr);
+    /** @copydoc kRdrPageSize */
+    KSIZE   (* pfnPageSize)(PKRDR pRdr);
+    /** @copydoc kRdrMap */
+    int     (* pfnMap)(     PKRDR pRdr, void **ppvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fFixed);
+    /** @copydoc kRdrRefresh */
+    int     (* pfnRefresh)( PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments);
+    /** @copydoc kRdrProtect */
+    int     (* pfnProtect)( PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fUnprotectOrProtect);
+    /** @copydoc kRdrUnmap */
+    int     (* pfnUnmap)(   PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments);
+    /** @copydoc kRdrDone */
+    void    (* pfnDone)(    PKRDR pRdr);
+    /** The usual non-zero dummy that makes sure we've initialized all members. */
+    KU32    u32Dummy;
+} KRDROPS;
+/** Pointer to file provider operations. */
+typedef KRDROPS *PKRDROPS;
+/** Pointer to const file provider operations. */
+typedef const KRDROPS *PCKRDROPS;
+
+
+/**
+ * File provider instance core.
+ */
+typedef struct KRDR
+{
+    /** Magic number (KRDR_MAGIC). */
+    KU32        u32Magic;
+    /** Pointer to the file provider operations. */
+    PCKRDROPS   pOps;
+} KRDR;
+
+void    kRdrAddProvider(PKRDROPS pAdd);
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/src/lib/kStuff/include/k/kTypes.h b/src/lib/kStuff/include/k/kTypes.h
new file mode 100644
index 0000000..c957566
--- /dev/null
+++ b/src/lib/kStuff/include/k/kTypes.h
@@ -0,0 +1,531 @@
+/* $Id: kTypes.h 95 2016-09-26 07:23:08Z bird $ */
+/** @file
+ * kTypes - Typedefs And Related Constants And Macros.
+ */
+
+/*
+ * Copyright (c) 2006-2009 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___k_kTypes_h___
+#define ___k_kTypes_h___
+
+#include <k/kDefs.h>
+
+/** @defgroup grp_kTypes    kTypes - Typedefs And Related Constants And Macros
+ * @{
+ */
+
+/** @typedef KI64
+ * 64-bit signed integer. */
+/** @typedef KU64
+ * 64-bit unsigned integer. */
+/** @def KI64_C
+ * 64-bit signed integer constant.
+ * @param c         The constant value. */
+/** @def KU64_C
+ * 64-bit unsigned integer constant.
+ * @param c         The constant value. */
+/** @def KI64_PRI
+ * 64-bit signed integer printf format. */
+/** @def KU64_PRI
+ * 64-bit unsigned integer printf format. */
+/** @def KX64_PRI
+ * 64-bit signed and unsigned integer hexadecimal printf format. */
+
+/** @typedef KI32
+ * 32-bit signed integer. */
+/** @typedef KU32
+ * 32-bit unsigned integer. */
+/** @def KI32_C
+ * 32-bit signed integer constant.
+ * @param c         The constant value. */
+/** @def KU32_C
+ * 32-bit unsigned integer constant.
+ * @param c         The constant value. */
+/** @def KI32_PRI
+ * 32-bit signed integer printf format. */
+/** @def KU32_PRI
+ * 32-bit unsigned integer printf format. */
+/** @def KX32_PRI
+ * 32-bit signed and unsigned integer hexadecimal printf format. */
+
+/** @typedef KI16
+ * 16-bit signed integer. */
+/** @typedef KU16
+ * 16-bit unsigned integer. */
+/** @def KI16_C
+ * 16-bit signed integer constant.
+ * @param c         The value. */
+/** @def KU16_C
+ * 16-bit unsigned integer constant.
+ * @param c         The value. */
+/** @def KI16_PRI
+ * 16-bit signed integer printf format. */
+/** @def KU16_PRI
+ * 16-bit unsigned integer printf format. */
+/** @def KX16_PRI
+ * 16-bit signed and unsigned integer hexadecimal printf format. */
+
+/** @typedef KI8
+ * 8-bit signed integer. */
+/** @typedef KU8
+ * 8-bit unsigned integer. */
+/** @def KI8_C
+ * 8-bit signed integer constant.
+ * @param c         The constant value. */
+/** @def KU8_C
+ * 8-bit unsigned integer constant.
+ * @param c         The constant value. */
+/** @def KI8_PRI
+ * 8-bit signed integer printf format. */
+/** @def KU8_PRI
+ * 8-bit unsigned integer printf format. */
+/** @def KX8_PRI
+ * 8-bit signed and unsigned integer hexadecimal printf format. */
+
+/** @typedef KSIZE
+ * Memory size type; unsigned integer. */
+/** @typedef KSSIZE
+ * Memory size type; signed integer. */
+/** @def KSIZE_C
+ * Memory size constant.
+ * @param c         The constant value. */
+/** @def KSSIZE_C
+ * Memory size constant.
+ * @param c         The constant value. */
+/** @def KSIZE_MAX
+ * Memory size max constant.*/
+/** @def KSSIZE_MAX
+ * Memory size max constant.*/
+/** @def KSSIZE_MIN
+ * Memory size min constant.*/
+/** @def KSIZE_PRI
+ * Memory size default printf format (hex). */
+/** @def KSIZE_PRI_U
+ * Memory size unsigned decimal printf format. */
+/** @def KSIZE_PRI_I
+ * Memory size signed decimal printf format. */
+/** @def KSIZE_PRI_X
+ * Memory size hexadecimal printf format. */
+/** @def KSSIZE_PRI
+ * Memory size default printf format (hex). */
+/** @def KSSIZE_PRI_U
+ * Memory size unsigned decimal printf format. */
+/** @def KSSIZE_PRI_I
+ * Memory size signed decimal printf format. */
+/** @def KSSIZE_PRI_X
+ * Memory size hexadecimal printf format. */
+
+/** @typedef KIPTR
+ * Signed integer type capable of containing a pointer value.  */
+/** @typedef KUPTR
+ * Unsigned integer type capable of containing a pointer value.  */
+/** @def KIPTR_C
+ * Signed pointer constant.
+ * @param c         The constant value. */
+/** @def KUPTR_C
+ * Unsigned pointer constant.
+ * @param c         The constant value. */
+/** @def KIPTR_MAX
+ * Signed pointer max constant.*/
+/** @def KIPTR_MIN
+ * Signed pointer min constant.*/
+/** @def KUPTR_MAX
+ * Unsigned pointer max constant.*/
+/** @def KIPTR_PRI
+ * Signed pointer printf format. */
+/** @def KUPTR_PRI
+ * Unsigned pointer printf format. */
+
+
+#if K_ARCH_BITS == 32
+  /* ASSUMES int == long == 32-bit, short == 16-bit, char == 8-bit. */
+# ifdef _MSC_VER
+typedef signed __int64          KI64;
+typedef unsigned __int64        KU64;
+#define KI64_PRI                "I64d"
+#define KU64_PRI                "I64u"
+#define KX64_PRI                "I64x"
+# else
+typedef signed long long int    KI64;
+typedef unsigned long long int  KU64;
+#define KI64_PRI                "lld"
+#define KU64_PRI                "llu"
+#define KX64_PRI                "llx"
+# endif
+typedef signed int              KI32;
+typedef unsigned int            KU32;
+typedef signed short int        KI16;
+typedef unsigned short int      KU16;
+typedef signed char             KI8;
+typedef unsigned char           KU8;
+#define KI64_C(c)               (c ## LL)
+#define KU64_C(c)               (c ## ULL)
+#define KI32_C(c)               (c)
+#define KU32_C(c)               (c ## U)
+#define KI16_C(c)               (c)
+#define KU16_C(c)               (c)
+#define KI8_C(c)                (c)
+#define KU8_C(c)                (c)
+
+#define KI32_PRI                "d"
+#define KU32_PRI                "u"
+#define KX32_PRI                "x"
+#define KI16_PRI                "d"
+#define KU16_PRI                "u"
+#define KX16_PRI                "x"
+#define KI8_PRI                 "d"
+#define KU8_PRI                 "u"
+#define KX8_PRI                 "x"
+
+typedef KI32                    KSSIZE;
+#define KSSIZE(c)               KI32_C(c)
+#define KSSIZE_MAX              KI32_MAX
+#define KSSIZE_MIN              KI32_MIN
+#define KSSIZE_PRI              KX32_PRI
+
+typedef KU32                    KSIZE;
+#define KSIZE_C(c)              KU32_C(c)
+#define KSIZE_MAX               KU32_MAX
+#define KSIZE_PRI               KX32_PRI
+#define KSIZE_PRI_U             KU32_PRI
+#define KSIZE_PRI_I             KI32_PRI
+#define KSIZE_PRI_X             KX32_PRI
+#define KIPTR_C(c)              KI32_C(c)
+
+typedef KI32                    KIPTR;
+#define KIPTR_MAX               KI32_MAX
+#define KIPTR_MIN               KI32_MIN
+#define KIPTR_PRI               KX32_PRI
+
+typedef KU32                    KUPTR;
+#define KUPTR_C(c)              KU32_C(c)
+#define KUPTR_MAX               KU32_MAX
+#define KUPTR_PRI               KX32_PRI
+
+
+#elif K_ARCH_BITS == 64
+
+# if K_OS == K_OS_WINDOWS
+#  if _MSC_VER
+typedef signed __int64          KI64;
+typedef unsigned __int64        KU64;
+#   define KI64_PRI             "I64d"
+#   define KU64_PRI             "I64u"
+#   define KX64_PRI             "I64x"
+#  else
+typedef signed long long int    KI64;
+typedef unsigned long long int  KU64;
+#   define KI64_PRI              "lld"
+#   define KU64_PRI              "llu"
+#   define KX64_PRI              "llx"
+#  endif
+#  define KI64_C(c)             (c ## LL)
+#  define KU64_C(c)             (c ## ULL)
+# else
+typedef signed long int         KI64;
+typedef unsigned long int       KU64;
+#  define KI64_C(c)             (c ## L)
+#  define KU64_C(c)             (c ## UL)
+#  define KI64_PRI              "ld"
+#  define KU64_PRI              "lu"
+#  define KX64_PRI              "lx"
+# endif
+typedef signed int              KI32;
+typedef unsigned int            KU32;
+typedef signed short            KI16;
+typedef unsigned short          KU16;
+typedef signed char             KI8;
+typedef unsigned char           KU8;
+#define KI32_C(c)               (c)
+#define KU32_C(c)               (c ## U)
+#define KI16_C(c)               (c)
+#define KU16_C(c)               (c)
+#define KI8_C(c)                (c)
+#define KU8_C(c)                (c)
+
+#define KI32_PRI                "d"
+#define KU32_PRI                "u"
+#define KX32_PRI                "x"
+#define KI16_PRI                "d"
+#define KU16_PRI                "u"
+#define KX16_PRI                "x"
+#define KI8_PRI                 "d"
+#define KU8_PRI                 "u"
+#define KX8_PRI                 "x"
+
+typedef KI64                    KSSIZE;
+#define KSSIZE(c)               KI64_C(c)
+#define KSSIZE_MAX              KI64_MAX
+#define KSSIZE_MIN              KI64_MIN
+#define KSSIZE_PRI              KX64_PRI
+#define KSSIZE_PRI_U            KU64_PRI
+#define KSSIZE_PRI_I            KI64_PRI
+#define KSSIZE_PRI_X            KX64_PRI
+
+typedef KU64                    KSIZE;
+#define KSIZE_C(c)              KU64_C(c)
+#define KSIZE_MAX               KU64_MAX
+#define KSIZE_PRI_U             KU64_PRI
+#define KSIZE_PRI_I             KI64_PRI
+#define KSIZE_PRI_X             KX64_PRI
+#define KSIZE_PRI               KX64_PRI
+
+typedef KI64                    KIPTR;
+#define KIPTR_C(c)              KI64_C(c)
+#define KIPTR_MAX               KI64_MAX
+#define KIPTR_MIN               KI64_MIN
+#define KIPTR_PRI               KX64_PRI
+
+typedef KU64                    KUPTR;
+#define KUPTR_C(c)              KU64_C(c)
+#define KUPTR_MAX               KU64_MAX
+#define KUPTR_PRI               KX64_PRI
+
+#else
+# error "Port Me"
+#endif
+
+
+/** Min KI8 value. */
+#define KI8_MIN                 (KI8_C(-0x7f) - 1)
+/** Min KI16 value. */
+#define KI16_MIN                (KI16_C(-0x7fff) - 1)
+/** Min KI32 value. */
+#define KI32_MIN                (KI32_C(-0x7fffffff) - 1)
+/** Min KI64 value. */
+#define KI64_MIN                (KI64_C(-0x7fffffffffffffff) - 1)
+/** Max KI8 value. */
+#define KI8_MAX                 KI8_C(0x7f)
+/** Max KI16 value. */
+#define KI16_MAX                KI16_C(0x7fff)
+/** Max KI32 value. */
+#define KI32_MAX                KI32_C(0x7fffffff)
+/** Max KI64 value. */
+#define KI64_MAX                KI64_C(0x7fffffffffffffff)
+/** Max KU8 value. */
+#define KU8_MAX                 KU8_C(0xff)
+/** Max KU16 value. */
+#define KU16_MAX                KU16_C(0xffff)
+/** Max KU32 value. */
+#define KU32_MAX                KU32_C(0xffffffff)
+/** Max KU64 value. */
+#define KU64_MAX                KU64_C(0xffffffffffffffff)
+
+/** File offset. */
+typedef KI64                    KFOFF;
+/** Pointer a file offset. */
+typedef KFOFF                  *PFOFF;
+/** Pointer a const file offset. */
+typedef KFOFF                  *PCFOFF;
+/** The min value for the KFOFF type. */
+#define KFOFF_MIN               KI64_MIN
+/** The max value for the KFOFF type. */
+#define KFOFF_MAX               KI64_MAX
+/** File offset contstant.
+ * @param c         The constant value. */
+#define KFOFF_C(c)              KI64_C(c)
+/** File offset printf format. */
+#define KFOFF_PRI               KI64_PRI
+
+
+/**
+ * Memory Protection.
+ */
+typedef enum KPROT
+{
+    /** The usual invalid 0. */
+    KPROT_INVALID = 0,
+    /** No access (page not present). */
+    KPROT_NOACCESS,
+    /** Read only. */
+    KPROT_READONLY,
+    /** Read & write. */
+    KPROT_READWRITE,
+    /** Read & copy on write. */
+    KPROT_WRITECOPY,
+    /** Execute only. */
+    KPROT_EXECUTE,
+    /** Execute & read. */
+    KPROT_EXECUTE_READ,
+    /** Execute, read & write. */
+    KPROT_EXECUTE_READWRITE,
+    /** Execute, read & copy on write. */
+    KPROT_EXECUTE_WRITECOPY,
+    /** The usual end value. (exclusive) */
+    KPROT_END,
+    /** Blow the type up to 32-bits. */
+    KPROT_32BIT_HACK = 0x7fffffff
+} KPROT;
+/** Pointer to a memory protection enum. */
+typedef KPROT                  *PKPROT;
+/** Pointer to a const memory protection enum. */
+typedef KPROT const            *PCKPROT;
+
+/** Boolean.
+ * This can be used as a tri-state type, but then you *must* do == checks. */
+typedef KI8                     KBOOL;
+/** Pointer to a boolean value. */
+typedef KBOOL                  *PKBOOL;
+/** Pointer to a const boolean value. */
+typedef KBOOL const            *PCKBOOL;
+/** Maxium value the KBOOL type can hold (officially). */
+#define KBOOL_MIN               KI8_C(-1)
+/** Maxium value the KBOOL type can hold (officially). */
+#define KBOOL_MAX               KI8_C(1)
+/** The KBOOL printf format. */
+#define KBOOL_PRI               KU8_PRI
+/** Boolean true constant. */
+#define K_TRUE                  KI8_C(1)
+/** Boolean false constant. */
+#define K_FALSE                 KI8_C(0)
+/** Boolean unknown constant (the third state). */
+#define K_UNKNOWN               KI8_C(-1)
+
+
+/**
+ * Integer union.
+ */
+typedef union KUINT
+{
+    KFOFF           iBig;               /**< The biggest member. */
+    KBOOL           fBool;              /**< Boolean. */
+    KU8             b;                  /**< unsigned 8-bit. */
+    KU8             u8;                 /**< unsigned 8-bit. */
+    KI8             i8;                 /**< signed 8-bit.  */
+    KU16            u16;                /**< unsigned 16-bit. */
+    KI16            i16;                /**< signed 16-bit. */
+    KU32            u32;                /**< unsigned 32-bit. */
+    KI32            i32;                /**< signed 32-bit. */
+    KU64            u64;                /**< unsigned 64-bit. */
+    KI64            i64;                /**< signed 64-bit. */
+    KSIZE           cbUnsign;           /**< unsigned size. */
+    KSSIZE          cbSign;             /**< signed size. */
+    KFOFF           offFile;            /**< file offset. */
+    KUPTR           uPtr;               /**< unsigned pointer. */
+    KIPTR           iPtr;               /**< signed pointer. */
+    void           *pv;                 /**< void pointer. */
+    char            ch;                 /**< char. */
+    unsigned char   uch;                /**< unsigned char. */
+    signed char     chSigned;           /**< signed char. */
+    unsigned short  uShort;             /**< Unsigned short. */
+    signed short    iShort;             /**< Signed short. */
+    unsigned int    uInt;               /**< Unsigned int. */
+    signed int      iInt;               /**< Signed int. */
+    unsigned long   uLong;              /**< Unsigned long. */
+    signed long     iLong;              /**< Signed long. */
+} KUINT;
+
+
+/**
+ * Integer pointer union.
+ */
+typedef union KPUINT
+{
+    KFOFF          *piBig;              /**< The biggest member. */
+    KBOOL          *pfBool;             /**< Boolean. */
+    KU8            *pb;                 /**< unsigned 8-bit. */
+    KU8            *pu8;                /**< unsigned 8-bit. */
+    KI8            *pi8;                /**< signed 8-bit. */
+    KU16           *pu16;               /**< unsigned 16-bit. */
+    KI16           *pi16;               /**< signed 16-bit. */
+    KU32           *pu32;               /**< unsigned 32-bit. */
+    KI32           *pi32;               /**< signed 32-bit. */
+    KU64           *pu64;               /**< unsigned 64-bit. */
+    KI64           *pi64;               /**< signed 64-bit. */
+    KSIZE          *pcbUnsign;          /**< unsigned size. */
+    KSSIZE         *pcbSign;            /**< signed size. */
+    KFOFF          *poffFile;           /**< file offset. */
+    KUPTR          *puPtr;              /**< unsigned pointer. */
+    KIPTR          *piPtr;              /**< signed pointer. */
+    void          **ppv;                /**< void pointer pointer. */
+    void           *pv;                 /**< void pointer. */
+    char           *pch;                /**< char. */
+    char           *psz;                /**< zero terminated string. */
+    unsigned char  *puch;               /**< unsigned char. */
+    signed char    *pchSigned;          /**< signed char. */
+    unsigned short *puShort;            /**< Unsigned short. */
+    signed short   *piShort;            /**< Signed short. */
+    unsigned int   *puInt;              /**< Unsigned int. */
+    signed int     *piInt;              /**< Signed int. */
+    unsigned long  *puLong;             /**< Unsigned long. */
+    signed long    *piLong;             /**< Signed long. */
+} KPUINT;
+
+/**
+ * Integer const pointer union.
+ */
+typedef union KPCUINT
+{
+    KFOFF  const   *piBig;              /**< The biggest member. */
+    KBOOL  const   *pfBool;             /**< Boolean. */
+    KU8    const   *pb;                 /**< byte.  */
+    KU8    const   *pu8;                /**< unsigned 8-bit.  */
+    KI8    const   *pi8;                /**< signed 8-bit.  */
+    KU16   const   *pu16;               /**< unsigned 16-bit. */
+    KI16   const   *pi16;               /**< signed 16-bit. */
+    KU32   const   *pu32;               /**< unsigned 32-bit. */
+    KI32   const   *pi32;               /**< signed 32-bit. */
+    KU64   const   *pu64;               /**< unsigned 64-bit. */
+    KI64   const   *pi64;               /**< signed 64-bit. */
+    KSIZE  const   *pcbUnsign;          /**< unsigned size. */
+    KSSIZE const   *pcbSign;            /**< signed size. */
+    KFOFF  const   *poffFile;           /**< file offset. */
+    KUPTR  const   *puPtr;              /**< unsigned pointer. */
+    KIPTR  const   *piPtr;              /**< signed pointer. */
+    void   const  **ppv;                /**< void pointer pointer. */
+    void   const   *pv;                 /**< void pointer. */
+    char   const   *pch;                /**< char. */
+    char   const   *psz;                /**< zero terminated string. */
+    unsigned char  const *puch;         /**< unsigned char. */
+    signed char    const *pchSigned;    /**< signed char. */
+    unsigned short const *puShort;      /**< Unsigned short. */
+    signed short   const *piShort;      /**< Signed short. */
+    unsigned int   const *puInt;        /**< Unsigned int. */
+    signed int     const *piInt;        /**< Signed int. */
+    unsigned long  const *puLong;       /**< Unsigned long. */
+    signed long    const *piLong;       /**< Signed long. */
+} KPCUINT;
+
+
+/** @name   Forward Declarations / Handle Types.
+ * @{ */
+
+/** Pointer to a file provider instance. */
+typedef struct KRDR *PKRDR;
+/** Pointer to a file provider instance pointer. */
+typedef struct KRDR **PPKRDR;
+
+/** Pointer to a loader segment. */
+typedef struct KLDRSEG *PKLDRSEG;
+/** Pointer to a loader segment. */
+typedef const struct KLDRSEG *PCKLDRSEG;
+
+/** @} */
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/kStuff/kCpu/Makefile.kmk b/src/lib/kStuff/kCpu/Makefile.kmk
new file mode 100644
index 0000000..505d438
--- /dev/null
+++ b/src/lib/kStuff/kCpu/Makefile.kmk
@@ -0,0 +1,42 @@
+# $Id: Makefile.kmk 29 2009-07-01 20:30:29Z bird $
+## @file
+# kCpu - The CPU and Architecture API, sub-makefile.
+#
+
+#
+# Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+DEPTH ?= ..
+SUB_DEPTH = ..
+include $(PATH_KBUILD)/subheader.kmk
+
+LIBRARIES += kCpuStatic
+kCpuStatic_TEMPLATE = kStuffLIB
+kCpuStatic_SOURCES = \
+	kCpuCompare.c \
+	kCpuGetArchAndCpu.c
+
+include $(PATH_KBUILD)/subfooter.kmk
+
diff --git a/src/lib/kStuff/kCpu/kCpuCompare.c b/src/lib/kStuff/kCpu/kCpuCompare.c
new file mode 100644
index 0000000..0d351a0
--- /dev/null
+++ b/src/lib/kStuff/kCpu/kCpuCompare.c
@@ -0,0 +1,131 @@
+/* $Id: kCpuCompare.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kCpu - kCpuCompare.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kCpu.h>
+#include <k/kErrors.h>
+
+
+/**
+ * Compares arch+cpu some code was generated for with a arch+cpu for executing it
+ * to see if it'll work out fine or not.
+ *
+ * @returns 0 if the code is compatible with the cpu.
+ * @returns KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE if the arch+cpu isn't compatible with the code.
+ *
+ * @param   enmCodeArch The architecture the code was generated for.
+ * @param   enmCodeCpu  The cpu the code was generated for.
+ * @param   enmArch     The architecture to run it on.
+ * @param   enmCpu      The cpu to run it on.
+ */
+KCPU_DECL(int) kCpuCompare(KCPUARCH enmCodeArch, KCPU enmCodeCpu, KCPUARCH enmArch, KCPU enmCpu)
+{
+    /*
+     * Compare arch and cpu.
+     */
+    if (enmCodeArch != enmArch)
+        return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
+
+    /* exact match is nice. */
+    if (enmCodeCpu == enmCpu)
+        return 0;
+
+    switch (enmArch)
+    {
+        case K_ARCH_X86_16:
+            if (enmCpu < KCPU_FIRST_X86_16 || enmCpu > KCPU_LAST_X86_16)
+                return KERR_INVALID_PARAMETER;
+
+            /* intel? */
+            if (enmCodeCpu <= KCPU_CORE2_16)
+            {
+                /* also intel? */
+                if (enmCpu <= KCPU_CORE2_16)
+                    return enmCodeCpu <= enmCpu ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
+                switch (enmCpu)
+                {
+                    case KCPU_K6_16:
+                        return enmCodeCpu <= KCPU_I586 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
+                    case KCPU_K7_16:
+                    case KCPU_K8_16:
+                    default:
+                        return enmCodeCpu <= KCPU_I686 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
+                }
+            }
+            /* amd */
+            return enmCpu >= KCPU_K6_16 && enmCpu <= KCPU_K8_16
+                    ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
+
+        case K_ARCH_X86_32:
+            if (enmCpu < KCPU_FIRST_X86_32 || enmCpu > KCPU_LAST_X86_32)
+                return KERR_INVALID_PARAMETER;
+
+            /* blend? */
+            if (enmCodeCpu == KCPU_X86_32_BLEND)
+                return 0;
+
+            /* intel? */
+            if (enmCodeCpu <= KCPU_CORE2_32)
+            {
+                /* also intel? */
+                if (enmCpu <= KCPU_CORE2_32)
+                    return enmCodeCpu <= enmCpu ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
+                switch (enmCpu)
+                {
+                    case KCPU_K6:
+                        return enmCodeCpu <= KCPU_I586 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
+                    case KCPU_K7:
+                    case KCPU_K8_32:
+                    default:
+                        return enmCodeCpu <= KCPU_I686 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
+                }
+            }
+            /* amd */
+            return enmCpu >= KCPU_K6 && enmCpu <= KCPU_K8_32
+                    ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
+
+        case K_ARCH_AMD64:
+            if (enmCpu < KCPU_FIRST_AMD64 || enmCpu > KCPU_LAST_AMD64)
+                return KERR_INVALID_PARAMETER;
+
+            /* blend? */
+            if (enmCodeCpu == KCPU_AMD64_BLEND)
+                return 0;
+            /* this is simple for now. */
+            return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
+
+        default:
+            break;
+    }
+    return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
+}
+
diff --git a/src/lib/kStuff/kCpu/kCpuGetArchAndCpu.c b/src/lib/kStuff/kCpu/kCpuGetArchAndCpu.c
new file mode 100644
index 0000000..8e0c00b
--- /dev/null
+++ b/src/lib/kStuff/kCpu/kCpuGetArchAndCpu.c
@@ -0,0 +1,57 @@
+/* $Id: kCpuGetArchAndCpu.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kCpu - kCpuGetArchAndCpu.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kCpu.h>
+
+
+/**
+ * Gets the arch+cpu of the calling cpu.
+ *
+ * @param   penmArch    Where to store the cpu architecture.
+ * @param   penmCpu     Where to store the cpu brand/model.
+ */
+KCPU_DECL(void) kCpuGetArchAndCpu(PKCPUARCH penmArch, PKCPU penmCpu)
+{
+#if K_ARCH == K_ARCH_AMD64
+    *penmArch = KCPUARCH_AMD64;
+    *penmCpu = KCPU_AMD64_BLEND; /** @todo check it using cpu. */
+
+#elif K_ARCH == K_ARCH_X86_32
+    *penmArch = KCPUARCH_X86_32;
+    *penmCpu = KCPU_X86_32_BLEND; /** @todo check it using cpu. */
+
+#else
+# error "Port me"
+#endif
+}
+
diff --git a/src/lib/kStuff/kDbg/Makefile.kmk b/src/lib/kStuff/kDbg/Makefile.kmk
new file mode 100644
index 0000000..af8bed3
--- /dev/null
+++ b/src/lib/kStuff/kDbg/Makefile.kmk
@@ -0,0 +1,73 @@
+# $Id: Makefile.kmk 29 2009-07-01 20:30:29Z bird $
+## @file
+# kDbg - The Debug Info Reader, sub-makefile.
+#
+
+#
+# Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+DEPTH ?= ..
+SUB_DEPTH = ..
+include $(PATH_KBUILD)/subheader.kmk
+
+#
+# kDbg - The profiler module.
+#
+#DLLS += kDbg - disabled for now.
+kDbg_TEMPLATE = kStuffDLL
+kDbg_DEFS = KDBG_BUILDING KDBG_RESIDES_IN_DLL
+kDbg_SOURCES := \
+	kDbgModule.cpp \
+	kDbgModLdr.cpp \
+	kDbgLine.cpp \
+	kDbgSymbol.cpp
+
+kDbg_SOURCES.win += \
+	kDbgModWinDbgHelp.cpp
+
+#
+# kDbgStatic - The profiler module.
+#
+LIBRARIES += kDbgStatic
+kDbgStatic_TEMPLATE = kStuffLIB
+kDbgStatic_DEFS = KDBG_BUILDING
+kDbgStatic_SOURCES = $(kDbg_SOURCES)
+kDbgStatic_SOURCES.win = $(kDbg_SOURCES.win)
+
+#
+# kDbgDump - Test program which dumps whatever is thrown at it.
+#
+PROGRAMS += kDbgDump
+kDbgDump_TEMPLATE = kStuffEXE
+kDbgDump_SOURCES = kDbgDump.cpp
+kDbgDump_LIBS = \
+	$(TARGET_kDbgStatic) \
+	$(subst kDbg,kLdr,$(TARGET_kDbgStatic)) \
+	$(subst kDbg,kRdr,$(TARGET_kDbgStatic)) \
+	$(subst kDbg,kHlpCRT,$(TARGET_kDbgStatic))
+
+# Generate the rules
+include $(PATH_KBUILD)/subfooter.kmk
+
diff --git a/src/lib/kStuff/kDbg/kDbgDump.cpp b/src/lib/kStuff/kDbg/kDbgDump.cpp
new file mode 100644
index 0000000..83cb36b
--- /dev/null
+++ b/src/lib/kStuff/kDbg/kDbgDump.cpp
@@ -0,0 +1,174 @@
+/* $Id: kDbgDump.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kDbgDump - Debug Info Dumper.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kDbg.h>
+#include <string.h>
+#include <stdio.h>
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** @name Options
+ * @{ */
+static int g_fGlobalSyms = 1;
+static int g_fPrivateSyms = 1;
+static int g_fLineNumbers = 0;
+/** @} */
+
+
+/**
+ * Dumps one file.
+ *
+ * @returns main exit status.
+ * @param   pszFile     The file to dump (path to it).
+ */
+static int DumpFile(const char *pszFile)
+{
+    PKDBGMOD pDbgMod;
+    int rc = kDbgModuleOpen(&pDbgMod, pszFile, NULL);
+    if (rc)
+    {
+        printf("kDbgDump: error: kDbgModuleOpen('%s',) failed with rc=%d.\n", pszFile, rc);
+        return 1;
+    }
+
+
+
+    return 0;
+}
+
+
+/**
+ * Prints the version number
+ * @return 0
+ */
+static int ShowVersion()
+{
+    printf("kDbgDump v0.0.1\n");
+    return 0;
+}
+
+
+/**
+ * Prints the program syntax.
+ *
+ * @returns 1
+ * @param   argv0   The program name.
+ */
+static int ShowSyntax(const char *argv0)
+{
+    ShowVersion();
+    printf("syntax: %s [options] <files>\n"
+           "\n",
+           argv0);
+    return 1;
+}
+
+int main(int argc, char **argv)
+{
+    int rcRet = 0;
+
+    /*
+     * Parse arguments.
+     */
+    int fArgsDone = 0;
+    for (int i = 1; i < argc; i++)
+    {
+        const char *psz = argv[i];
+
+        if (!fArgsDone && psz[0] == '-' && psz[1])
+        {
+            /* convert long option to short. */
+            if (*++psz == '-')
+            {
+                psz++;
+                if (!*psz) /* -- */
+                {
+                    fArgsDone = 1;
+                    continue;
+                }
+                if (!strcmp(psz, "line-numbers"))
+                    psz = "l";
+                else if (!strcmp(psz, "no-line-numbers"))
+                    psz = "L";
+                else if (!strcmp(psz, "global-syms")    || !strcmp(psz, "public-syms"))
+                    psz = "g";
+                else if (!strcmp(psz, "no-global-syms") || !strcmp(psz, "no-public-syms"))
+                    psz = "G";
+                else if (!strcmp(psz, "privat-syms")    || !strcmp(psz, "local-syms"))
+                    psz = "p";
+                else if (!strcmp(psz, "no-privat-syms") || !strcmp(psz, "no-local-syms"))
+                    psz = "P";
+                else if (!strcmp(psz, "version"))
+                    psz = "v";
+                else if (!strcmp(psz, "help"))
+                    psz = "h";
+                else
+                {
+                    fprintf(stderr, "%s: syntax error: unknown option '--%s'\n", argv[0], psz);
+                    return 1;
+                }
+            }
+
+            /* eat short options. */
+            while (*psz)
+                switch (*psz++)
+                {
+                    case 'l': g_fLineNumbers = 1; break;
+                    case 'L': g_fLineNumbers = 0; break;
+                    case 'p': g_fPrivateSyms = 1; break;
+                    case 'P': g_fPrivateSyms = 0; break;
+                    case 'g': g_fGlobalSyms = 1; break;
+                    case 'G': g_fGlobalSyms = 0; break;
+                    case '?':
+                    case 'H':
+                    case 'h': return ShowSyntax(argv[0]);
+                    case 'v': return ShowVersion();
+                    default:
+                        fprintf(stderr, "%s: syntax error: unknown option '-%c'.\n", argv[0], psz[-1]);
+                        return 1;
+                }
+        }
+        else
+        {
+            /* Dump does it's own bitching if something goes wrong. */
+            int rc = DumpFile(psz);
+            if (rc && !rcRet)
+                rc = rcRet;
+        }
+    }
+
+    return rcRet;
+}
+
diff --git a/src/lib/kStuff/kDbg/kDbgHlp.h b/src/lib/kStuff/kDbg/kDbgHlp.h
new file mode 100644
index 0000000..cd5116d
--- /dev/null
+++ b/src/lib/kStuff/kDbg/kDbgHlp.h
@@ -0,0 +1,306 @@
+/* $Id: kDbgHlp.h 78 2016-07-13 15:52:04Z bird $ */
+/** @file
+ * kDbg - The Debug Info Reader, Internal Header.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___kDbgHlp_h___
+#define ___kDbgHlp_h___
+
+#include <k/kDbgBase.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/** @defgroup grp_kDbgHlpHeap   kDbg Internal Heap APIs.
+ * @internal
+ * @{
+ */
+
+/**
+ * Allocates memory.
+ *
+ * @returns Pointer to the allocated memory.
+ *          NULL on failure.
+ * @param   cb      The number of bytes to allocate.
+ */
+void *kDbgHlpAlloc(size_t cb);
+
+/**
+ * Allocates memory like kDbgHlpAlloc, except that it's zeroed.
+ *
+ * @returns Pointer to the allocated memory.
+ *          NULL on failure.
+ * @param   cb      The number of bytes to allocate.
+ */
+void *kDbgHlpAllocZ(size_t cb);
+
+/**
+ * Combination of kDbgHlpAlloc and memcpy.
+ *
+ * @returns Pointer to the duplicate.
+ *          NULL on failure.
+ *
+ * @param   pv      The memory to be duplicate.
+ * @param   cb      The size of the block.
+ */
+void *kDbgHlpAllocDup(const void *pv, size_t cb);
+
+/**
+ * Reallocates a memory block returned by kDbgHlpAlloc, kDbgHlpAllocZ
+ * kDbgHlpAllocDup or this function.
+ *
+ * The content of new memory added to the memory block is undefined.
+ *
+ * @returns Pointer to the allocated memory.
+ *          NULL on failure, the old block remains intact.
+ * @param   pv      The memory block to reallocate.
+ *                  If NULL this function will work like kDbgHlpAlloc.
+ * @param   cb      The number of bytes to allocate.
+ *                  If 0 this function will work like kDbgHlpFree.
+ */
+void *kDbgHlpRealloc(void *pv, size_t cb);
+
+/**
+ * Frees memory allocated by kDbgHlpAlloc, kDbgHlpAllocZ
+ * kDbgHlpAllocDup, or kDbgHlpRealloc.
+ *
+ * @param pv
+ */
+void kDbgHlpFree(void *pv);
+
+/** @} */
+
+
+/** @defgroup grp_kDbgHlpFile   kDbg Internal File Access APIs.
+ * @internal
+ * @{
+ */
+/**
+ * Opens the specified file as read-only, buffered if possible.
+ *
+ * @returns 0 on success, or the appropriate KDBG_ERR_* on failure.
+ *
+ * @param   pszFilename     The file to open.
+ * @param   ppFile          Where to store the handle to the open file.
+ */
+int kDbgHlpOpenRO(const char *pszFilename, PKDBGHLPFILE *ppFile);
+
+
+/**
+ * Closes a file opened by kDbgHlpOpenRO.
+ *
+ * @param   pFile           The file handle.
+ */
+void kDbgHlpClose(PKDBGHLPFILE pFile);
+
+/**
+ * Gets the native file handle.
+ *
+ * @return  The native file handle.
+ *          -1 on failure.
+ * @param   pFile           The file handle.
+ */
+uintptr_t kDbgHlpNativeFileHandle(PKDBGHLPFILE pFile);
+
+/**
+ * Gets the size of an open file.
+ *
+ * @returns The file size in bytes on success.
+ *          On failure -1 is returned.
+ * @param   pFile           The file handle.
+ */
+int64_t kDbgHlpFileSize(PKDBGHLPFILE pFile);
+
+/**
+ * Reads a number of bytes at a specified file location.
+ *
+ * This will change the current file position to off + cb on success,
+ * while on failure the position will be undefined.
+ *
+ * @returns The file size in bytes on success.
+ *          On failure -1 is returned.
+ * @param   pFile           The file handle.
+ * @param   off             Where to read.
+ * @param   pv              Where to store the data.
+ * @param   cb              How much to read.
+ */
+int kDbgHlpReadAt(PKDBGHLPFILE pFile, int64_t off, void *pv, size_t cb);
+
+/**
+ * Reads a number of bytes at the current file position.
+ *
+ * This will advance the current file position by cb bytes on success
+ * while on failure the position will be undefined.
+ *
+ * @returns The file size in bytes on success.
+ *          On failure -1 is returned.
+ * @param   pFile           The file handle.
+ * @param   pv              Where to store the data.
+ * @param   cb              How much to read.
+ * @param   off             Where to read.
+ */
+int kDbgHlpRead(PKDBGHLPFILE pFile, void *pv, size_t cb);
+
+/**
+ * Sets the current file position.
+ *
+ * @returns 0 on success, and KDBG_ERR_* on failure.
+ * @param   pFile           The file handle.
+ * @param   off             The desired file position.
+ */
+int kDbgHlpSeek(PKDBGHLPFILE pFile, int64_t off);
+
+/**
+ * Move the file position relative to the current one.
+ *
+ * @returns 0 on success, and KDBG_ERR_* on failure.
+ * @param   pFile           The file handle.
+ * @param   off             How much to move the file position by.
+ */
+int kDbgHlpSeekByCur(PKDBGHLPFILE pFile, int64_t off);
+
+/**
+ * Move the file position relative to the end of the file.
+ *
+ * @returns 0 on success, and KDBG_ERR_* on failure.
+ * @param   pFile           The file handle.
+ * @param   off             The offset relative to the end, positive number.
+ */
+int kDbgHlpSeekByEnd(PKDBGHLPFILE pFile, int64_t off);
+
+/**
+ * Gets the current file position.
+ *
+ * @returns The current file position on success.
+ *          -1 on failure.
+ * @param   pFile           The file handle.
+ */
+int64_t kDbgHlpTell(PKDBGHLPFILE pFile);
+
+/** @} */
+
+/** @defgroup grp_kDbgHlpAssert     kDbg Internal Assertion Macros.
+ * @internal
+ * @{
+ */
+
+#ifdef _MSC_VER
+# define kDbgAssertBreakpoint() do { __debugbreak(); } while (0)
+#else
+# define kDbgAssertBreakpoint() do { __asm__ __volatile__ ("int3"); } while (0)
+#endif
+
+/**
+ * Helper function that displays the first part of the assertion message.
+ *
+ * @param   pszExpr         The expression.
+ * @param   pszFile         The file name.
+ * @param   iLine           The line number is the file.
+ * @param   pszFunction     The function name.
+ */
+void kDbgAssertMsg1(const char *pszExpr, const char *pszFile, unsigned iLine, const char *pszFunction);
+
+/**
+ * Helper function that displays custom assert message.
+ *
+ * @param   pszFormat       Format string that get passed to vprintf.
+ * @param   ...             Format arguments.
+ */
+void kDbgAssertMsg2(const char *pszFormat, ...);
+
+
+#ifdef KDBG_STRICT
+
+# define kDbgAssert(expr) \
+    do { \
+        if (!(expr)) \
+        { \
+            kDbgAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kDbgAssertBreakpoint(); \
+        } \
+    } while (0)
+
+# define kDbgAssertReturn(expr, rcRet) \
+    do { \
+        if (!(expr)) \
+        { \
+            kDbgAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kDbgAssertBreakpoint(); \
+            return (rcRet); \
+        } \
+    } while (0)
+
+# define kDbgAssertMsg(expr, msg) \
+    do { \
+        if (!(expr)) \
+        { \
+            kDbgAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kDbgAssertMsg2 msg; \
+            kDbgAssertBreakpoint(); \
+        } \
+    } while (0)
+
+# define kDbgAssertMsgReturn(expr, msg, rcRet) \
+    do { \
+        if (!(expr)) \
+        { \
+            kDbgAssertMsg1(#expr, __FILE__, __LINE__, K_FUNCTION); \
+            kDbgAssertMsg2 msg; \
+            kDbgAssertBreakpoint(); \
+            return (rcRet); \
+        } \
+    } while (0)
+
+#else   /* !KDBG_STRICT */
+# define kDbgAssert(expr)                       do { } while (0)
+# define kDbgAssertReturn(expr, rcRet)          do { if (!(expr)) return (rcRet); } while (0)
+# define kDbgAssertMsg(expr, msg)               do { } while (0)
+# define kDbgAssertMsgReturn(expr, msg, rcRet)  do { if (!(expr)) return (rcRet); } while (0)
+#endif  /* !KDBG_STRICT */
+
+#define kDbgAssertPtr(ptr)                      kDbgAssertMsg(KDBG_VALID_PTR(ptr), ("%s = %p\n", #ptr, (ptr)))
+#define kDbgAssertPtrReturn(ptr, rcRet)         kDbgAssertMsgReturn(KDBG_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)), (rcRet))
+#define kDbgAssertPtrNull(ptr)                  kDbgAssertMsg(!(ptr) || KDBG_VALID_PTR(ptr), ("%s = %p\n", #ptr, (ptr)))
+#define kDbgAssertPtrNullReturn(ptr, rcRet)     kDbgAssertMsgReturn(!(ptr) || KDBG_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)), (rcRet))
+#define kDbgAssertRC(rc)                        kDbgAssertMsg((rc) == 0, ("%s = %d\n", #rc, (rc)))
+#define kDbgAssertRCReturn(rc, rcRet)           kDbgAssertMsgReturn((rc) == 0, ("%s = %d -> %d\n", #rc, (rc), (rcRet)), (rcRet))
+#define kDbgAssertFailed()                      kDbgAssert(0)
+#define kDbgAssertFailedReturn(rcRet)           kDbgAssertReturn(0, (rcRet))
+#define kDbgAssertMsgFailed(msg)                kDbgAssertMsg(0, msg)
+#define kDbgAssertMsgFailedReturn(msg, rcRet)   kDbgAssertMsgReturn(0, msg, (rcRet))
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/src/lib/kStuff/kDbg/kDbgHlpCrt.cpp b/src/lib/kStuff/kDbg/kDbgHlpCrt.cpp
new file mode 100644
index 0000000..a218404
--- /dev/null
+++ b/src/lib/kStuff/kDbg/kDbgHlpCrt.cpp
@@ -0,0 +1,239 @@
+/* $Id: kDbgHlpCrt.cpp 77 2016-06-22 17:03:55Z bird $ */
+/** @file
+ * kDbg - The Debug Info Reader, Helpers, CRT Based Implementation.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "kDbgHlp.h"
+#include "kDbg.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#ifdef _MSC_VER
+# include <io.h>
+#endif
+
+
+
+/**
+ * The stdio base implementation of KDBGHLPFILE.
+ */
+typedef struct KDBGHLPFILE
+{
+    /** Pointer to the stdio file stream. */
+    FILE *pStrm;
+} KDBGHLPFILE;
+
+/** @def HAVE_FSEEKO
+ * Define HAVE_FSEEKO to indicate that fseeko and ftello should be used. */
+#if !defined(_MSC_VER)
+# define HAVE_FSEEKO
+#endif
+
+
+void *kDbgHlpAlloc(size_t cb)
+{
+    return malloc(cb);
+}
+
+
+void *kDbgHlpAllocZ(size_t cb)
+{
+    return calloc(1, cb);
+}
+
+
+void *kDbgHlpAllocDup(const void *pv, size_t cb)
+{
+    void *pvNew = malloc(cb);
+    if (pvNew)
+        memcpy(pvNew, pv, cb);
+    return pvNew;
+}
+
+
+void *kDbgHlpReAlloc(void *pv, size_t cb)
+{
+    return realloc(pv, cb);
+}
+
+
+void kDbgHlpFree(void *pv)
+{
+    free(pv);
+}
+
+
+int kDbgHlpCrtConvErrno(int rc)
+{
+    switch (rc)
+    {
+        case 0:             return 0;
+        case EINVAL:        return KERR_INVALID_PARAMETER;
+        case ENOMEM:        return KERR_NO_MEMORY;
+        case EISDIR:
+        case ENOENT:        return KERR_FILE_NOT_FOUND;
+        default:            return KERR_GENERAL_FAILURE;
+    }
+}
+
+
+int kDbgHlpOpenRO(const char *pszFilename, PKDBGHLPFILE *ppFile)
+{
+    PKDBGHLPFILE pFile = (PKDBGHLPFILE)kDbgHlpAlloc(sizeof(*pFile));
+    if (!pFile)
+        return KERR_NO_MEMORY;
+
+    pFile->pStrm = fopen(pszFilename, "rb");
+    if (pFile->pStrm)
+    {
+        *ppFile = pFile;
+        return 0;
+    }
+    return kDbgHlpCrtConvErrno(errno);
+}
+
+
+void kDbgHlpClose(PKDBGHLPFILE pFile)
+{
+    if (pFile)
+    {
+        fclose(pFile->pStrm);
+        pFile->pStrm = NULL;
+        kDbgHlpFree(pFile);
+    }
+}
+
+
+uintptr_t kDbgHlpNativeFileHandle(PKDBGHLPFILE pFile)
+{
+    int fd = fileno(pFile->pStrm);
+#ifdef _MSC_VER
+    return _get_osfhandle(fd);
+#else
+    return fd;
+#endif
+}
+
+
+int64_t kDbgHlpFileSize(PKDBGHLPFILE pFile)
+{
+    int64_t cbFile;
+    int64_t offCur = kDbgHlpTell(pFile);
+    if (offCur >= 0)
+    {
+        if (kDbgHlpSeekByEnd(pFile, 0) == 0)
+            cbFile = kDbgHlpTell(pFile);
+        else
+            cbFile = -1;
+        kDbgHlpSeek(pFile, offCur);
+    }
+    else
+        cbFile = -1;
+    return cbFile;
+}
+
+
+int kDbgHlpReadAt(PKDBGHLPFILE pFile, int64_t off, void *pv, size_t cb)
+{
+    int rc  = kDbgHlpSeek(pFile, off);
+    if (!rc)
+        rc = kDbgHlpRead(pFile, pv, cb);
+    return rc;
+}
+
+
+int kDbgHlpRead(PKDBGHLPFILE pFile, void *pv, size_t cb)
+{
+    if (fread(pv, cb, 1, pFile->pStrm) == 1)
+        return 0;
+    return -1;
+}
+
+
+int kDbgHlpSeek(PKDBGHLPFILE pFile, int64_t off)
+{
+#ifdef HAVE_FSEEKO
+    if (!fseeko(pFile->pStrm, off, SEEK_SET))
+        return 0;
+#else
+    long l = (long)off;
+    if (l != off)
+        return KERR_OUT_OF_RANGE;
+    if (!fseek(pFile->pStrm, l, SEEK_SET))
+        return 0;
+#endif
+    return kDbgHlpCrtConvErrno(errno);
+}
+
+
+int kDbgHlpSeekByCur(PKDBGHLPFILE pFile, int64_t off)
+{
+#ifdef HAVE_FSEEKO
+    if (!fseeko(pFile->pStrm, off, SEEK_CUR))
+        return 0;
+#else
+    long l = (long)off;
+    if (l != off)
+        return KERR_OUT_OF_RANGE;
+    if (!fseek(pFile->pStrm, l, SEEK_CUR))
+        return 0;
+#endif
+    return kDbgHlpCrtConvErrno(errno);
+}
+
+
+int kDbgHlpSeekByEnd(PKDBGHLPFILE pFile, int64_t off)
+{
+#ifdef HAVE_FSEEKO
+    if (!fseeko(pFile->pStrm, -off, SEEK_END))
+        return 0;
+#else
+    long l = (long)off;
+    if (l != off)
+        return KERR_OUT_OF_RANGE;
+    if (!fseek(pFile->pStrm, -l, SEEK_END))
+        return 0;
+#endif
+    return kDbgHlpCrtConvErrno(errno);
+}
+
+
+int64_t kDbgHlpTell(PKDBGHLPFILE pFile)
+{
+#ifdef HAVE_FSEEKO
+    return ftello(pFile->pStrm);
+#else
+    return ftell(pFile->pStrm);
+#endif
+}
+
diff --git a/src/lib/kStuff/kDbg/kDbgInternal.h b/src/lib/kStuff/kDbg/kDbgInternal.h
new file mode 100644
index 0000000..fdb3fcd
--- /dev/null
+++ b/src/lib/kStuff/kDbg/kDbgInternal.h
@@ -0,0 +1,137 @@
+/* $Id: kDbgInternal.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kDbg - The Debug Info Reader, Internal Header.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___kDbgInternal_h___
+#define ___kDbgInternal_h___
+
+#include <k/kHlpAssert.h>
+#include <k/kMagics.h>
+#include <k/kErrors.h>
+#include <k/kDbgAll.h>
+
+
+/** @defgroup grp_kDbgInternal  Internal
+ * @internal
+ * @addtogroup grp_kDbg
+ * @{
+ */
+
+/** @def KDBG_STRICT
+ * If defined the kDbg assertions and other runtime checks will be enabled. */
+#ifdef K_ALL_STRICT
+# undef KDBG_STRICT
+# define KDBG_STRICT
+#endif
+
+/** @name Our Assert macros
+ * @{ */
+#ifdef KDBG_STRICT
+# define kDbgAssert(expr)                       kHlpAssert(expr)
+# define kDbgAssertReturn(expr, rcRet)          kHlpAssertReturn(expr, rcRet)
+# define kDbgAssertReturnVoid(expr)             kHlpAssertReturnVoid(expr)
+# define kDbgAssertMsg(expr, msg)               kHlpAssertMsg(expr, msg)
+# define kDbgAssertMsgReturn(expr, msg, rcRet)  kHlpAssertMsgReturn(expr, msg, rcRet)
+# define kDbgAssertMsgReturnVoid(expr, msg)     kHlpAssertMsgReturnVoid(expr, msg)
+#else   /* !KDBG_STRICT */
+# define kDbgAssert(expr)                       do { } while (0)
+# define kDbgAssertReturn(expr, rcRet)          do { if (!(expr)) return (rcRet); } while (0)
+# define kDbgAssertMsg(expr, msg)               do { } while (0)
+# define kDbgAssertMsgReturn(expr, msg, rcRet)  do { if (!(expr)) return (rcRet); } while (0)
+#endif  /* !KDBG_STRICT */
+
+#define kDbgAssertPtr(ptr)                      kDbgAssertMsg(K_VALID_PTR(ptr), ("%s = %p\n", #ptr, (ptr)))
+#define kDbgAssertPtrReturn(ptr, rcRet)         kDbgAssertMsgReturn(K_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)), (rcRet))
+#define kDbgAssertPtrReturnVoid(ptr)            kDbgAssertMsgReturnVoid(K_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)))
+#define kDbgAssertPtrNull(ptr)                  kDbgAssertMsg(!(ptr) || K_VALID_PTR(ptr), ("%s = %p\n", #ptr, (ptr)))
+#define kDbgAssertPtrNullReturn(ptr, rcRet)     kDbgAssertMsgReturn(!(ptr) || K_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)), (rcRet))
+#define kDbgAssertPtrNullReturnVoid(ptr)        kDbgAssertMsgReturnVoid(!(ptr) || K_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)))
+#define kDbgAssertRC(rc)                        kDbgAssertMsg((rc) == 0, ("%s = %d\n", #rc, (rc)))
+#define kDbgAssertRCReturn(rc, rcRet)           kDbgAssertMsgReturn((rc) == 0, ("%s = %d -> %d\n", #rc, (rc), (rcRet)), (rcRet))
+#define kDbgAssertRCReturnVoid(rc)              kDbgAssertMsgReturnVoid((rc) == 0, ("%s = %d -> %d\n", #rc, (rc), (rcRet)))
+#define kDbgAssertFailed()                      kDbgAssert(0)
+#define kDbgAssertFailedReturn(rcRet)           kDbgAssertReturn(0, (rcRet))
+#define kDbgAssertFailedReturnVoid()            kDbgAssertReturnVoid(0)
+#define kDbgAssertMsgFailed(msg)                kDbgAssertMsg(0, msg)
+#define kDbgAssertMsgFailedReturn(msg, rcRet)   kDbgAssertMsgReturn(0, msg, (rcRet))
+#define kDbgAssertMsgFailedReturnVoid(msg)      kDbgAssertMsgReturnVoid(0, msg)
+/** @} */
+
+/** Return / crash validation of a reader argument. */
+#define KDBGMOD_VALIDATE_EX(pDbgMod, rc) \
+    do  { \
+        kDbgAssertPtrReturn((pDbgMod), (rc)); \
+        kDbgAssertReturn((pDbgMod)->u32Magic == KDBGMOD_MAGIC, (rc)); \
+        kDbgAssertReturn((pDbgMod)->pOps != NULL, (rc)); \
+    } while (0)
+
+/** Return / crash validation of a reader argument. */
+#define KDBGMOD_VALIDATE(pDbgMod) \
+    do  { \
+        kDbgAssertPtrReturn((pDbgMod), KERR_INVALID_POINTER); \
+        kDbgAssertReturn((pDbgMod)->u32Magic == KDBGMOD_MAGIC, KERR_INVALID_HANDLE); \
+        kDbgAssertReturn((pDbgMod)->pOps != NULL, KERR_INVALID_HANDLE); \
+    } while (0)
+
+/** Return / crash validation of a reader argument. */
+#define KDBGMOD_VALIDATE_VOID(pDbgMod) \
+    do  { \
+        kDbgAssertPtrReturnVoid((pDbgMod)); \
+        kDbgAssertReturnVoid((pDbgMod)->u32Magic == KDBGMOD_MAGIC); \
+        kDbgAssertReturnVoid((pDbgMod)->pOps != NULL); \
+    } while (0)
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @name Built-in Debug Module Readers
+ * @{ */
+extern KDBGMODOPS const g_kDbgModWinDbgHelpOpen;
+extern KDBGMODOPS const g_kDbgModLdr;
+extern KDBGMODOPS const g_kDbgModCv8;
+extern KDBGMODOPS const g_kDbgModDwarf;
+extern KDBGMODOPS const g_kDbgModHll;
+extern KDBGMODOPS const g_kDbgModStabs;
+extern KDBGMODOPS const g_kDbgModSym;
+extern KDBGMODOPS const g_kDbgModMapILink;
+extern KDBGMODOPS const g_kDbgModMapMSLink;
+extern KDBGMODOPS const g_kDbgModMapNm;
+extern KDBGMODOPS const g_kDbgModMapWLink;
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/kStuff/kDbg/kDbgLine.cpp b/src/lib/kStuff/kDbg/kDbgLine.cpp
new file mode 100644
index 0000000..52e573f
--- /dev/null
+++ b/src/lib/kStuff/kDbg/kDbgLine.cpp
@@ -0,0 +1,78 @@
+/* $Id: kDbgLine.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kDbg - The Debug Info Read, Line Numbers.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "kDbgInternal.h"
+#include <k/kHlpAlloc.h>
+
+
+/**
+ * Duplicates a line number.
+ *
+ * To save heap space, the returned line number will not own more heap space
+ * than it strictly need to. So, it's not possible to append stuff to the symbol
+ * or anything of that kind.
+ *
+ * @returns Pointer to the duplicate.
+ *          This must be freed using kDbgSymbolFree().
+ * @param   pLine       The line number to be duplicated.
+ */
+KDBG_DECL(PKDBGLINE) kDbgLineDup(PCKDBGLINE pLine)
+{
+    kDbgAssertPtrReturn(pLine, NULL);
+    KSIZE cb = K_OFFSETOF(KDBGLINE, szFile[pLine->cchFile + 1]);
+    PKDBGLINE pNewLine = (PKDBGLINE)kHlpDup(pLine, cb);
+    if (pNewLine)
+        pNewLine->cbSelf = cb;
+    return pNewLine;
+}
+
+
+/**
+ * Frees a line number obtained from the kDbg API.
+ *
+ * @returns 0 on success.
+ * @returns KERR_INVALID_POINTER if pLine isn't a valid pointer.
+ *
+ * @param   pLine       The line number to be freed. The null pointer is ignored.
+ */
+KDBG_DECL(int) kDbgLineFree(PKDBGLINE pLine)
+{
+    if (pLine)
+    {
+        kDbgAssertPtrReturn(pLine, KERR_INVALID_POINTER);
+        pLine->cbSelf = 0;
+        kHlpFree(pLine);
+    }
+    return 0;
+}
+
diff --git a/src/lib/kStuff/kDbg/kDbgModLdr.cpp b/src/lib/kStuff/kDbg/kDbgModLdr.cpp
new file mode 100644
index 0000000..5e77095
--- /dev/null
+++ b/src/lib/kStuff/kDbg/kDbgModLdr.cpp
@@ -0,0 +1,109 @@
+/* $Id: kDbgModLdr.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kDbg - The Debug Info Reader, kLdr Based.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kDbg.h>
+#include <k/kLdr.h>
+#include "kDbgInternal.h"
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * A kLdr based debug reader.
+ */
+typedef struct KDBGMODLDR
+{
+    /** The common module core. */
+    KDBGMOD     Core;
+    /** Pointer to the loader module. */
+    PKLDRMOD    pLdrMod;
+} KDBGMODLDR, *PKDBGMODLDR;
+
+
+/**
+ * @copydoc KDBGMODOPS::pfnQueryLine
+ */
+static int kDbgModLdrQueryLine(PKDBGMOD pMod, KI32 iSegment, KDBGADDR uOffset, PKDBGLINE pLine)
+{
+    //PKDBGMODLDR pThis = (PKDBGMODLDR)pMod;
+    return KERR_NOT_IMPLEMENTED;
+}
+
+
+/**
+ * @copydoc KDBGMODOPS::pfnQuerySymbol
+ */
+static int kDbgModLdrQuerySymbol(PKDBGMOD pMod, KI32 iSegment, KDBGADDR off, PKDBGSYMBOL pSym)
+{
+    //PKDBGMODLDR pThis = (PKDBGMODLDR)pMod;
+    return KERR_NOT_IMPLEMENTED;
+}
+
+
+/**
+ * @copydoc KDBGMODOPS::pfnClose
+ */
+static int kDbgModLdrClose(PKDBGMOD pMod)
+{
+    //PKDBGMODLDr pThis = (PKDBGMODLDR)pMod;
+    return KERR_NOT_IMPLEMENTED;
+}
+
+
+/**
+ * @copydocs  KDBGMODOPS::pfnOpen.
+ */
+static int kDbgModLdrOpen(PKDBGMOD *ppMod, PKRDR pRdr, KBOOL fCloseRdr, KFOFF off, KFOFF cb, struct KLDRMOD *pLdrMod)
+{
+    return KERR_NOT_IMPLEMENTED;
+}
+
+
+/**
+ * Methods for a PE module.
+ */
+const KDBGMODOPS g_kDbgModLdr =
+{
+    "kLdr",
+    NULL,
+    kDbgModLdrOpen,
+    kDbgModLdrClose,
+    kDbgModLdrQuerySymbol,
+    kDbgModLdrQueryLine,
+    "kLdr"
+};
+
+
+
+
diff --git a/src/lib/kStuff/kDbg/kDbgModPE.cpp b/src/lib/kStuff/kDbg/kDbgModPE.cpp
new file mode 100644
index 0000000..85de91c
--- /dev/null
+++ b/src/lib/kStuff/kDbg/kDbgModPE.cpp
@@ -0,0 +1,384 @@
+/* $Id: kDbgModPE.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kDbg - The Debug Info Reader, PE Module (Generic).
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "kDbg.h"
+#include "kDbgInternal.h"
+#include <kLdrModPE.h>
+#include <string.h>
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * A dbghelp based PE debug reader.
+ */
+typedef struct KDBGMODPE
+{
+    /** The common module core. */
+    KDBGMOD     Core;
+    /** The image size. */
+    uint32_t    cbImage;
+    /** The number of sections. (We've added the implicit header section.) */
+    int32_t     cSections;
+    /** The section headers (variable size). The first section is the
+     * implicit header section.*/
+    IMAGE_SECTION_HEADER aSections[1];
+} KDBGMODPE, *PKDBGMODPE;
+
+
+/**
+ * Calcs the RVA for a segment:offset address.
+ *
+ * @returns IPRT status code.
+ *
+ * @param   pModPe      The PE debug module instance.
+ * @param   iSegment    The segment number. Special segments are dealt with as well.
+ * @param   off         The segment offset.
+ * @param   puRVA       Where to store the RVA on success.
+ */
+static int kDbgModPeSegOffToRVA(PKDBGMODPE pModPe, int32_t iSegment, KDBGADDR off, uint32_t *puRVA)
+{
+    if (iSegment >= 0)
+    {
+        kDbgAssertMsgReturn(iSegment < pModPe->cSections, ("iSegment=%x cSections=%x\n", iSegment, pModPe->cSections),
+                        KDBG_ERR_INVALID_ADDRESS);
+        kDbgAssertMsgReturn(off < pModPe->aSections[iSegment].Misc.VirtualSize,
+                        ("off=" PRI_KDBGADDR " VirtualSize=%x\n", off, pModPe->aSections[iSegment].Misc.VirtualSize),
+                        KDBG_ERR_INVALID_ADDRESS);
+        *puRVA = pModPe->aSections[iSegment].VirtualAddress + (uint32_t)off;
+        return 0;
+    }
+
+    if (iSegment == KDBGSEG_RVA)
+    {
+        kDbgAssertMsgReturn(off < pModPe->cbImage, ("off=" PRI_KDBGADDR ", cbImage=%x\n", off, pModPe->cbImage),
+                            KDBG_ERR_INVALID_ADDRESS);
+        *puRVA = (uint32_t)off;
+        return 0;
+    }
+    kDbgAssertMsgFailedReturn(("iSegment=%d\n", iSegment), KDBG_ERR_INVALID_ADDRESS);
+}
+
+
+/**
+ * Calcs the segment:offset address for a RVA.
+ *
+ * @returns IPRT status code.
+ *
+ * @param   pModPe      The PE debug module instance.
+ * @param   uRVA        The RVA.
+ * @param   piSegment   Where to store the segment number.
+ * @param   poff        Where to store the segment offset.
+ */
+static int kDbgModPeRVAToSegOff(PKDBGMODPE pModPe, uint32_t uRVA, int32_t *piSegment, KDBGADDR *poff)
+{
+    kDbgAssertMsgReturn(uRVA < pModPe->cbImage, ("uRVA=%x, cbImage=%x\n", uRVA, pModPe->cbImage),
+                        KDBG_ERR_INVALID_ADDRESS);
+    for (int32_t iSegment = 0; iSegment < pModPe->cSections; iSegment++)
+    {
+        /** @todo should probably be less strict about address in the alignment gaps. */
+        uint32_t off = uRVA - pModPe->aSections[iSegment].VirtualAddress;
+        if (off < pModPe->aSections[iSegment].Misc.VirtualSize)
+        {
+            *poff = off;
+            *piSegment = iSegment;
+            return 0;
+        }
+    }
+    kDbgAssertMsgFailedReturn(("uRVA=%x\n", uRVA), KDBG_ERR_INVALID_ADDRESS);
+}
+
+
+/**
+ * @copydoc KDBGMODOPS::pfnQueryLine
+ */
+static int kDbgModPeQueryLine(PKDBGMOD pMod, int32_t iSegment, KDBGADDR off, PKDBGLINE pLine)
+{
+    PKDBGMODPE pModPe = (PKDBGMODPE)pMod;
+
+    /*
+     * Translate the address to an RVA.
+     */
+    uint32_t uRVA;
+    int rc = kDbgModPeSegOffToRVA(pModPe, iSegment, off, &uRVA);
+    if (!rc)
+    {
+#if 0
+        DWORD64 off;
+        IMAGEHLP_LINE64 Line;
+        Line.SizeOfStruct = sizeof(Line);
+        if (g_pfnSymGetLineFromAddr64(pModPe->hSymInst, pModPe->ImageBase + uRVA, &off, &Line))
+        {
+            pLine->RVA = (KDBGADDR)(Line.Address - pModPe->ImageBase);
+            rc = kDbgModPeRVAToSegOff(pModPe, pLine->RVA, &pLine->iSegment, &pLine->offSegment);
+            pLine->iLine = Line.LineNumber;
+            pLine->cchFile = strlen(Line.FileName);
+            if (pLine->cchFile >= sizeof(pLine->szFile))
+                pLine->cchFile = sizeof(pLine->szFile) - 1;
+            memcpy(pLine->szFile, Line.FileName, pLine->cchFile + 1);
+        }
+        else
+        {
+            DWORD Err = GetLastError();
+            rc = kDbgModPeConvWinError(Err);
+        }
+#endif
+        rc = KERR_NOT_IMPLEMENTED;
+    }
+    return rc;
+}
+
+
+/**
+ * @copydoc KDBGMODOPS::pfnQuerySymbol
+ */
+static int kDbgModPeQuerySymbol(PKDBGMOD pMod, int32_t iSegment, KDBGADDR off, PKDBGSYMBOL pSym)
+{
+    PKDBGMODPE pModPe = (PKDBGMODPE)pMod;
+
+    /*
+     * Translate the address to an RVA.
+     */
+    uint32_t uRVA;
+    int rc = kDbgModPeSegOffToRVA(pModPe, iSegment, off, &uRVA);
+    if (!rc)
+    {
+#if 0
+        DWORD64 off;
+        union
+        {
+            SYMBOL_INFO Sym;
+            char        achBuffer[sizeof(SYMBOL_INFO) + KDBG_SYMBOL_MAX];
+        } Buf;
+        Buf.Sym.SizeOfStruct = sizeof(SYMBOL_INFO);
+        Buf.Sym.MaxNameLen = KDBG_SYMBOL_MAX;
+        if (g_pfnSymFromAddr(pModPe->hSymInst, pModPe->ImageBase + uRVA, &off, &Buf.Sym))
+        {
+            pSym->cb     = Buf.Sym.Size;
+            pSym->fFlags = 0;
+            if (Buf.Sym.Flags & SYMFLAG_FUNCTION)
+                pSym->fFlags |= KDBGSYM_FLAGS_CODE;
+            else if (Buf.Sym.Flags & SYMFLAG_CONSTANT)
+                pSym->fFlags |= KDBGSYM_FLAGS_ABS; /** @todo SYMFLAG_CONSTANT must be tested - documentation is too brief to say what is really meant here.*/
+            else
+                pSym->fFlags |= KDBGSYM_FLAGS_DATA;
+            if (Buf.Sym.Flags & SYMFLAG_EXPORT)
+                pSym->fFlags |= KDBGSYM_FLAGS_EXPORTED;
+            if ((Buf.Sym.Flags & (SYMFLAG_VALUEPRESENT | SYMFLAG_CONSTANT)) == (SYMFLAG_VALUEPRESENT | SYMFLAG_CONSTANT))
+            {
+                pSym->iSegment   = KDBGSEG_ABS;
+                pSym->offSegment = (KDBGADDR)Buf.Sym.Value;
+                pSym->RVA        = (KDBGADDR)Buf.Sym.Value;
+            }
+            else
+            {
+                pSym->RVA        = (KDBGADDR)(Buf.Sym.Address - pModPe->ImageBase);
+                rc = kDbgModPeRVAToSegOff(pModPe, pSym->RVA, &pSym->iSegment, &pSym->offSegment);
+            }
+            pSym->cchName = (uint16_t)Buf.Sym.NameLen;
+            if (pSym->cchName >= sizeof(pSym->szName))
+                pSym->cchName = sizeof(pSym->szName) - 1;
+            memcpy(pSym->szName, Buf.Sym.Name, Buf.Sym.NameLen);
+            pSym->szName[Buf.Sym.NameLen] = '\0';
+        }
+        else
+        {
+            DWORD Err = GetLastError();
+            rc = kDbgModPeConvWinError(Err);
+        }
+#endif
+        rc = KERR_NOT_IMPLEMENTED;
+    }
+    return rc;
+}
+
+
+/**
+ * @copydoc KDBGMODOPS::pfnClose
+ */
+static int kDbgModPeClose(PKDBGMOD pMod)
+{
+    PKDBGMODPE pModPe = (PKDBGMODPE)pMod;
+
+    //if (g_pfnSymCleanup(pModPe->hSymInst))
+    //    return 0;
+    //
+    //DWORD Err = GetLastError();
+    //int rc = kDbgModPeConvWinError(Err);
+    //kDbgAssertMsgFailed(("SymInitialize failed: Err=%d rc=%Rrc\n", Err, rc));
+    //return rc;
+    return KERR_NOT_IMPLEMENTED;
+}
+
+
+/**
+ * Opens the debug info for a PE image using the windows dbghelp library.
+ *
+ * @returns IPRT status code.
+ *
+ * @param   pFile               The handle to the module.
+ * @param   offHdr              The offset of the PE header.
+ * @param   pszModulePath       The path to the module.
+ * @param   ppDbgMod            Where to store the module handle.
+ *
+ */
+int kdbgModPEOpen(PKDBGHLPFILE pFile, int64_t offHdr, const char *pszModulePath, PKDBGMOD *ppDbgMod)
+{
+    /*
+     * We need to read the section headers and get the image size.
+     */
+    IMAGE_FILE_HEADER FHdr;
+    int rc = kDbgHlpReadAt(pFile, offHdr + KDBG_OFFSETOF(IMAGE_NT_HEADERS32, FileHeader), &FHdr, sizeof(FHdr));
+    kDbgAssertRCReturn(rc, rc);
+
+    uint32_t cbImage;
+    if (FHdr.SizeOfOptionalHeader == sizeof(IMAGE_OPTIONAL_HEADER32))
+        rc = kDbgHlpReadAt(pFile, offHdr + KDBG_OFFSETOF(IMAGE_NT_HEADERS32, OptionalHeader.SizeOfImage),
+                           &cbImage, sizeof(cbImage));
+    else if (FHdr.SizeOfOptionalHeader == sizeof(IMAGE_OPTIONAL_HEADER64))
+        rc = kDbgHlpReadAt(pFile, offHdr + KDBG_OFFSETOF(IMAGE_NT_HEADERS64, OptionalHeader.SizeOfImage),
+                           &cbImage, sizeof(cbImage));
+    else
+        kDbgAssertFailedReturn(KDBG_ERR_BAD_EXE_FORMAT);
+    kDbgAssertRCReturn(rc, rc);
+
+    /*
+     * Allocate the module and read/construct the section headers.
+     */
+    PKDBGMODPE pModPe = (PKDBGMODPE)kDbgHlpAlloc(KDBG_OFFSETOF(KDBGMODPE, aSections[FHdr.NumberOfSections + 2]));
+    kDbgAssertReturn(pModPe, KERR_NO_MEMORY);
+    pModPe->Core.u32Magic   = KDBGMOD_MAGIC;
+    pModPe->Core.pOps       = &g_kDbgModPeOps;
+    pModPe->Core.pFile      = pFile;
+    pModPe->cbImage         = cbImage;
+    pModPe->cSections       = 1 + FHdr.NumberOfSections;
+    rc = kDbgHlpReadAt(pFile, offHdr + KDBG_OFFSETOF(IMAGE_NT_HEADERS32, OptionalHeader) + FHdr.SizeOfOptionalHeader,
+                       &pModPe->aSections[1], sizeof(pModPe->aSections[0]) * FHdr.NumberOfSections);
+    if (!rc)
+    {
+        PIMAGE_SECTION_HEADER pSH = &pModPe->aSections[0];
+        memcpy(pSH->Name, "headers", sizeof(pSH->Name));
+        pSH->Misc.VirtualSize       = pModPe->aSections[1].VirtualAddress;
+        pSH->VirtualAddress         = 0;
+        pSH->SizeOfRawData          = pSH->Misc.VirtualSize;
+        pSH->PointerToRawData       = 0;
+        pSH->PointerToRelocations   = 0;
+        pSH->PointerToLinenumbers   = 0;
+        pSH->NumberOfRelocations    = 0;
+        pSH->NumberOfLinenumbers    = 0;
+        pSH->Characteristics        = IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_ALIGN_4BYTES | IMAGE_SCN_MEM_READ;
+
+        uint32_t uTheEnd = pModPe->aSections[FHdr.NumberOfSections].VirtualAddress
+                         + pModPe->aSections[FHdr.NumberOfSections].Misc.VirtualSize;
+        if (uTheEnd < cbImage)
+        {
+            pSH = &pModPe->aSections[pModPe->cSections++];
+            memcpy(pSH->Name, "tail\0\0\0", sizeof(pSH->Name));
+            pSH->Misc.VirtualSize       = cbImage - uTheEnd;
+            pSH->VirtualAddress         = uTheEnd;
+            pSH->SizeOfRawData          = pSH->Misc.VirtualSize;
+            pSH->PointerToRawData       = 0;
+            pSH->PointerToRelocations   = 0;
+            pSH->PointerToLinenumbers   = 0;
+            pSH->NumberOfRelocations    = 0;
+            pSH->NumberOfLinenumbers    = 0;
+            pSH->Characteristics        = IMAGE_SCN_CNT_UNINITIALIZED_DATA | IMAGE_SCN_ALIGN_1BYTES | IMAGE_SCN_MEM_READ;
+        }
+
+#if 0
+        /*
+         * Find a new dbghelp handle.
+         *
+         * We assume 4GB of handles outlast most debugging sessions, or in anyways that
+         * when we start reusing handles they are no longer in use. :-)
+         */
+        static volatile uint32_t s_u32LastHandle = 1;
+        HANDLE hSymInst = (HANDLE)ASMAtomicIncU32(&s_u32LastHandle);
+        while (     hSymInst == INVALID_HANDLE_VALUE
+               ||   hSymInst == (HANDLE)0
+               ||   hSymInst == GetCurrentProcess())
+            hSymInst = (HANDLE)ASMAtomicIncU32(&s_u32LastHandle);
+
+        /*
+         * Initialize dbghelp and try open the specified module.
+         */
+        if (g_pfnSymInitialize(hSymInst, NULL, FALSE))
+        {
+            g_pfnSymSetOptions(SYMOPT_LOAD_LINES | SYMOPT_AUTO_PUBLICS | SYMOPT_ALLOW_ABSOLUTE_SYMBOLS);
+
+            kDbgHlpSeek(pFile, 0); /* don't know if this is required or not... */
+            DWORD64 ImageBase = g_pfnSymLoadModule64(hSymInst, (HANDLE)File, pszModulePath, NULL, 0x00400000, 0);
+            if (ImageBase)
+            {
+                pModPe->hSymInst    = hSymInst;
+                pModPe->ImageBase   = ImageBase;
+                *ppDbgMod = &pModPe->Core;
+                return rc;
+            }
+
+            DWORD Err = GetLastError();
+            rc = kDbgModPeConvWinError(Err);
+            kDbgAssertMsgFailed(("SymLoadModule64 failed: Err=%d rc=%Rrc\n", Err, rc));
+            g_pfnSymCleanup(hSymInst);
+        }
+        else
+        {
+            DWORD Err = GetLastError();
+            rc = kDbgModPeConvWinError(Err);
+            kDbgAssertMsgFailed(("SymInitialize failed: Err=%d rc=%Rrc\n", Err, rc));
+        }
+#endif
+        rc = KERR_NOT_IMPLEMENTED;
+    }
+    else
+        kDbgAssertRC(rc);
+
+    kDbgHlpFree(pModPe);
+    return rc;
+}
+
+
+/**
+ * Methods for a PE module.
+ */
+const KDBGMODOPS g_kDbgModPeOps =
+{
+    "PE",
+    kDbgModPeClose,
+    kDbgModPeQuerySymbol,
+    kDbgModPeQueryLine
+};
+
+
+
diff --git a/src/lib/kStuff/kDbg/kDbgModWinDbgHelp.cpp b/src/lib/kStuff/kDbg/kDbgModWinDbgHelp.cpp
new file mode 100644
index 0000000..3c30773
--- /dev/null
+++ b/src/lib/kStuff/kDbg/kDbgModWinDbgHelp.cpp
@@ -0,0 +1,724 @@
+/* $Id: kDbgModWinDbgHelp.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kDbg - The Debug Info Reader, DbgHelp Based Reader.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <Windows.h>
+#define _IMAGEHLP64
+#include <DbgHelp.h>
+
+#include "kDbgInternal.h"
+#include <k/kHlpAlloc.h>
+#include <k/kHlpString.h>
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** The dbghelp.dll module handle. */
+static HMODULE g_hDbgHelp = NULL;
+/** Pointer to the dbhelp.dll SymInitialize function. */
+static BOOL (WINAPI *g_pfnSymInitialize)(IN HANDLE,IN LPSTR,IN BOOL);
+/** Pointer to the dbhelp.dll SymCleanup function. */
+static BOOL (WINAPI *g_pfnSymCleanup)(IN HANDLE);
+/** Pointer to the dbhelp.dll SymSetOptions function. */
+static DWORD (WINAPI *g_pfnSymSetOptions)(IN DWORD);
+/** Pointer to the dbhelp.dll SymLoadModule64 function. */
+static DWORD64 (WINAPI *g_pfnSymLoadModule64)(IN HANDLE, IN HANDLE, IN PCSTR, IN PCSTR ModuleName, IN DWORD64, IN DWORD);
+/** Pointer to the dbhelp.dll SymFromAddr function. */
+static DWORD (WINAPI *g_pfnSymFromAddr)(IN HANDLE, IN DWORD64, OUT PDWORD64, OUT PSYMBOL_INFO);
+/** Pointer to the dbhelp.dll SymGetLineFromAddr64 function. */
+static DWORD (WINAPI *g_pfnSymGetLineFromAddr64)(IN HANDLE, IN DWORD64, OUT PDWORD64, OUT PIMAGEHLP_LINE64);
+
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * A dbghelp based PE debug reader.
+ */
+typedef struct KDBGMODDBGHELP
+{
+    /** The common module core. */
+    KDBGMOD     Core;
+    /** The image base. */
+    DWORD64     ImageBase;
+    /** The "process" handle we present dbghelp. */
+    HANDLE      hSymInst;
+    /** The image size. */
+    KU32        cbImage;
+    /** The number of sections. (We've added the implicit header section.) */
+    KI32        cSections;
+    /** The section headers (variable size). The first section is the
+     * implicit header section.*/
+    IMAGE_SECTION_HEADER    aSections[1];
+} KDBGMODDBGHELP, *PKDBGMODDBGHELP;
+
+
+/**
+ * Convers a Windows error to kDbg error code.
+ *
+ * @returns kDbg status code.
+ * @param   rc          The Windows error.
+ */
+static int kdbgModDHConvWinError(DWORD rc)
+{
+    switch (rc)
+    {
+        case 0:                     return 0;
+        default:                    return KERR_GENERAL_FAILURE;
+    }
+}
+
+
+/**
+ * Calcs the RVA for a segment:offset address.
+ *
+ * @returns IPRT status code.
+ *
+ * @param   pModDH      The PE debug module instance.
+ * @param   iSegment    The segment number. Special segments are dealt with as well.
+ * @param   off         The segment offset.
+ * @param   puRVA       Where to store the RVA on success.
+ */
+static int kdbgModDHSegOffToRVA(PKDBGMODDBGHELP pModDH, KI32 iSegment, KDBGADDR off, KU32 *puRVA)
+{
+    if (iSegment >= 0)
+    {
+        kDbgAssertMsgReturn(iSegment < pModDH->cSections, ("iSegment=%x cSections=%x\n", iSegment, pModDH->cSections),
+                            KDBG_ERR_INVALID_ADDRESS);
+        kDbgAssertMsgReturn(off < pModDH->aSections[iSegment].Misc.VirtualSize,
+                            ("off=" PRI_KDBGADDR " VirtualSize=%x\n", off, pModDH->aSections[iSegment].Misc.VirtualSize),
+                            KDBG_ERR_INVALID_ADDRESS);
+        *puRVA = pModDH->aSections[iSegment].VirtualAddress + (KU32)off;
+        return 0;
+    }
+
+    if (iSegment == KDBGSEG_RVA)
+    {
+        kDbgAssertMsgReturn(off < pModDH->cbImage, ("off=" PRI_KDBGADDR ", cbImage=%x\n", off, pModDH->cbImage),
+                            KDBG_ERR_INVALID_ADDRESS);
+        *puRVA = (KU32)off;
+        return 0;
+    }
+    kDbgAssertMsgFailedReturn(("iSegment=%d\n", iSegment), KDBG_ERR_INVALID_ADDRESS);
+}
+
+
+/**
+ * Calcs the segment:offset address for a RVA.
+ *
+ * @returns IPRT status code.
+ *
+ * @param   pModDH      The PE debug module instance.
+ * @param   uRVA        The RVA.
+ * @param   piSegment   Where to store the segment number.
+ * @param   poff        Where to store the segment offset.
+ */
+static int kdbgModDHRVAToSegOff(PKDBGMODDBGHELP pModDH, KU32 uRVA, KI32 *piSegment, KDBGADDR *poff)
+{
+    kDbgAssertMsgReturn(uRVA < pModDH->cbImage, ("uRVA=%x, cbImage=%x\n", uRVA, pModDH->cbImage),
+                        KDBG_ERR_INVALID_ADDRESS);
+    for (KI32 iSegment = 0; iSegment < pModDH->cSections; iSegment++)
+    {
+        /** @todo should probably be less strict about address in the alignment gaps. */
+        KU32 off = uRVA - pModDH->aSections[iSegment].VirtualAddress;
+        if (off < pModDH->aSections[iSegment].Misc.VirtualSize)
+        {
+            *poff = off;
+            *piSegment = iSegment;
+            return 0;
+        }
+    }
+    kDbgAssertMsgFailedReturn(("uRVA=%x\n", uRVA), KDBG_ERR_INVALID_ADDRESS);
+}
+
+
+/**
+ * @copydoc KDBGMODOPS::pfnQueryLine
+ */
+static int kdbgModDHQueryLine(PKDBGMOD pMod, KI32 iSegment, KDBGADDR off, PKDBGLINE pLine)
+{
+    PKDBGMODDBGHELP pModDH = (PKDBGMODDBGHELP)pMod;
+
+    /*
+     * Translate the address to an RVA.
+     */
+    KU32 uRVA;
+    int rc = kdbgModDHSegOffToRVA(pModDH, iSegment, off, &uRVA);
+    if (!rc)
+    {
+        DWORD64 off;
+        IMAGEHLP_LINE64 Line;
+        Line.SizeOfStruct = sizeof(Line);
+        if (g_pfnSymGetLineFromAddr64(pModDH->hSymInst, pModDH->ImageBase + uRVA, &off, &Line))
+        {
+            pLine->RVA = (KDBGADDR)(Line.Address - pModDH->ImageBase);
+            rc = kdbgModDHRVAToSegOff(pModDH, (KU32)pLine->RVA, &pLine->iSegment, &pLine->offSegment);
+            pLine->iLine = Line.LineNumber;
+            KSIZE cchFile = kHlpStrLen(Line.FileName);
+            pLine->cchFile = cchFile < sizeof(pLine->szFile)
+                           ? (KU16)cchFile
+                           : (KU16)sizeof(pLine->szFile) - 1;
+            kHlpMemCopy(pLine->szFile, Line.FileName, pLine->cchFile);
+            pLine->szFile[pLine->cchFile] = '\0';
+        }
+        else
+        {
+            DWORD Err = GetLastError();
+            rc = kdbgModDHConvWinError(Err);
+        }
+    }
+    return rc;
+}
+
+
+/**
+ * @copydoc KDBGMODOPS::pfnQuerySymbol
+ */
+static int kdbgModDHQuerySymbol(PKDBGMOD pMod, KI32 iSegment, KDBGADDR off, PKDBGSYMBOL pSym)
+{
+    PKDBGMODDBGHELP pModDH = (PKDBGMODDBGHELP)pMod;
+
+    /*
+     * Translate the address to an RVA.
+     */
+    KU32 uRVA;
+    int rc = kdbgModDHSegOffToRVA(pModDH, iSegment, off, &uRVA);
+    if (!rc)
+    {
+        DWORD64 off;
+        union
+        {
+            SYMBOL_INFO Sym;
+            char        achBuffer[sizeof(SYMBOL_INFO) + KDBG_SYMBOL_MAX];
+        } Buf;
+        Buf.Sym.SizeOfStruct = sizeof(SYMBOL_INFO);
+        Buf.Sym.MaxNameLen = KDBG_SYMBOL_MAX;
+        if (g_pfnSymFromAddr(pModDH->hSymInst, pModDH->ImageBase + uRVA, &off, &Buf.Sym))
+        {
+            pSym->cb      = Buf.Sym.Size;
+            pSym->Address = NIL_KDBGADDR;
+            pSym->fFlags  = 0;
+            if (Buf.Sym.Flags & SYMFLAG_FUNCTION)
+                pSym->fFlags |= KDBGSYM_FLAGS_CODE;
+            else if (Buf.Sym.Flags & SYMFLAG_CONSTANT)
+                pSym->fFlags |= KDBGSYM_FLAGS_ABS; /** @todo SYMFLAG_CONSTANT must be tested - documentation is too brief to say what is really meant here.*/
+            else
+                pSym->fFlags |= KDBGSYM_FLAGS_DATA;
+            if (Buf.Sym.Flags & SYMFLAG_EXPORT)
+                pSym->fFlags |= KDBGSYM_FLAGS_EXPORTED;
+            if ((Buf.Sym.Flags & (SYMFLAG_VALUEPRESENT | SYMFLAG_CONSTANT)) == (SYMFLAG_VALUEPRESENT | SYMFLAG_CONSTANT))
+            {
+                pSym->iSegment   = KDBGSEG_ABS;
+                pSym->offSegment = (KDBGADDR)Buf.Sym.Value;
+                pSym->RVA        = (KDBGADDR)Buf.Sym.Value;
+            }
+            else
+            {
+                pSym->RVA        = (KDBGADDR)(Buf.Sym.Address - pModDH->ImageBase);
+                rc = kdbgModDHRVAToSegOff(pModDH, (KU32)pSym->RVA, &pSym->iSegment, &pSym->offSegment);
+            }
+            pSym->cchName = (KU16)Buf.Sym.NameLen;
+            if (pSym->cchName >= sizeof(pSym->szName))
+                pSym->cchName = sizeof(pSym->szName) - 1;
+            kHlpMemCopy(pSym->szName, Buf.Sym.Name, Buf.Sym.NameLen);
+            pSym->szName[Buf.Sym.NameLen] = '\0';
+        }
+        else
+        {
+            DWORD Err = GetLastError();
+            rc = kdbgModDHConvWinError(Err);
+        }
+    }
+    return rc;
+}
+
+
+/**
+ * @copydoc KDBGMODOPS::pfnClose
+ */
+static int kdbgModDHClose(PKDBGMOD pMod)
+{
+    PKDBGMODDBGHELP pModDH = (PKDBGMODDBGHELP)pMod;
+
+    if (g_pfnSymCleanup(pModDH->hSymInst))
+        return 0;
+
+    DWORD Err = GetLastError();
+    int rc = kdbgModDHConvWinError(Err);
+    kDbgAssertMsgFailed(("SymInitialize failed: Err=%d rc=%d\n", Err, rc));
+    return rc;
+}
+
+
+/**
+ * Checks if the specified dbghelp.dll is usable.
+ *
+ * @returns IPRT status code.
+ *
+ * @param   pszPath     the path to the dbghelp.dll.
+ */
+static int kdbgModDHTryDbgHelp(const char *pszPath, KU32 *pu32FileVersionMS, KU32 *pu32FileVersionLS)
+{
+    int rc;
+    DWORD dwHandle = 0;
+    DWORD cb = GetFileVersionInfoSize(pszPath, &dwHandle);
+    if (cb > 0)
+    {
+        void *pvBuf = alloca(cb);
+        if (GetFileVersionInfo(pszPath, dwHandle, cb, pvBuf))
+        {
+            UINT cbValue = 0;
+            VS_FIXEDFILEINFO *pFileInfo;
+            if (VerQueryValue(pvBuf, "\\", (void **)&pFileInfo, &cbValue))
+            {
+                /** @todo somehow reject 64-bit .dlls when in 32-bit mode... dwFileOS is completely useless. */
+                if (    *pu32FileVersionMS < pFileInfo->dwFileVersionMS
+                    ||  (   *pu32FileVersionMS == pFileInfo->dwFileVersionMS
+                         && *pu32FileVersionLS  > pFileInfo->dwFileVersionLS))
+                {
+                    *pu32FileVersionMS = pFileInfo->dwFileVersionMS;
+                    *pu32FileVersionLS = pFileInfo->dwFileVersionLS;
+                }
+                if (pFileInfo->dwFileVersionMS >= 0x60004)
+                    rc = 0;
+                else
+                    rc = KDBG_ERR_DBGHLP_VERSION_MISMATCH;
+            }
+            else
+                rc = KERR_GENERAL_FAILURE;
+        }
+        else
+            rc = kdbgModDHConvWinError(GetLastError());
+    }
+    else
+        rc = kdbgModDHConvWinError(GetLastError());
+    return rc;
+}
+
+
+/**
+ * Find the dbghelp.dll
+ */
+static int kdbgModDHFindDbgHelp(char *pszPath, KSIZE cchPath)
+{
+    /*
+     * Try the current directory.
+     */
+    KU32 FileVersionMS = 0;
+    KU32 FileVersionLS = 0;
+    int rc = KERR_GENERAL_FAILURE;
+    static char s_szDbgHelp[] = "\\dbghelp.dll";
+    if (GetCurrentDirectory((DWORD)(cchPath - sizeof(s_szDbgHelp) + 1), pszPath))
+    {
+        strcat(pszPath, s_szDbgHelp);
+        int rc2 = kdbgModDHTryDbgHelp(pszPath, &FileVersionMS, &FileVersionLS);
+        if (!rc2)
+            return rc2;
+        if (rc != KDBG_ERR_DBGHLP_VERSION_MISMATCH)
+            rc = rc2;
+    }
+
+    /*
+     * Try the application directory.
+     */
+    if (GetModuleFileName(NULL, pszPath, (DWORD)(cchPath - sizeof(s_szDbgHelp) + 1)))
+    {
+        kHlpStrCat(kHlpStrRChr(pszPath, '\\'), s_szDbgHelp);
+        int rc2 = kdbgModDHTryDbgHelp(pszPath, &FileVersionMS, &FileVersionLS);
+        if (!rc)
+            return rc2;
+        if (rc != KDBG_ERR_DBGHLP_VERSION_MISMATCH)
+            rc = rc2;
+    }
+
+    /*
+     * Try the windows directory.
+     */
+    if (GetSystemDirectory(pszPath, (DWORD)(cchPath - sizeof(s_szDbgHelp) + 1)))
+    {
+        kHlpStrCat(pszPath, s_szDbgHelp);
+        int rc2 = kdbgModDHTryDbgHelp(pszPath, &FileVersionMS, &FileVersionLS);
+        if (!rc2)
+            return rc2;
+        if (rc != KDBG_ERR_DBGHLP_VERSION_MISMATCH)
+            rc = rc2;
+    }
+
+    /*
+     * Try the windows directory.
+     */
+    if (GetWindowsDirectory(pszPath, (DWORD)(cchPath - sizeof(s_szDbgHelp) + 1)))
+    {
+        kHlpStrCat(pszPath, s_szDbgHelp);
+        int rc2 = kdbgModDHTryDbgHelp(pszPath, &FileVersionMS, &FileVersionLS);
+        if (!rc2)
+            return rc2;
+        if (rc != KDBG_ERR_DBGHLP_VERSION_MISMATCH)
+            rc = rc2;
+    }
+
+    /*
+     * Try the path.
+     */
+    /** @todo find the actual path specs, I'm probably not doing this 100% correctly here. */
+    DWORD cb = GetEnvironmentVariable("PATH", NULL, 0) + 64;
+    char *pszSearchPath = (char *) alloca(cb);
+    if (GetEnvironmentVariable("PATH", pszSearchPath, cb) < cb)
+    {
+        char *psz = pszSearchPath;
+        while (*psz)
+        {
+            /* find the end of the path. */
+            char *pszEnd = kHlpStrChr(psz, ';');
+            if (!pszEnd)
+                pszEnd = kHlpStrChr(psz, '\0');
+            if (pszEnd != psz)
+            {
+                /* construct filename and try it out */
+                kHlpMemCopy(pszPath, psz, pszEnd - psz);
+                kHlpMemCopy(&pszPath[pszEnd - psz], s_szDbgHelp, sizeof(s_szDbgHelp));
+                int rc2 = kdbgModDHTryDbgHelp(pszPath, &FileVersionMS, &FileVersionLS);
+                if (!rc2)
+                    return rc2;
+                if (rc != KDBG_ERR_DBGHLP_VERSION_MISMATCH)
+                    rc = rc2;
+            }
+
+            /* next path */
+            if (!*pszEnd)
+                break;
+            psz = pszEnd + 1;
+        }
+    }
+
+    if (rc == KDBG_ERR_DBGHLP_VERSION_MISMATCH)
+        kDbgAssertMsgFailed(("dbghelp.dll found, but it was ancient! The highest file version found was 0x%08x'%08x.\n"
+                             "This program require a file version of at least 0x00060004'00000000. Please download\n"
+                             "the latest windbg and use the dbghelp.dll from that package. Just put it somewhere in\n"
+                             "the PATH and we'll find it.\n", FileVersionMS, FileVersionLS));
+    else
+        kDbgAssertMsgFailed(("dbghelp.dll was not found! Download the latest windbg and use the dbghelp.dll\n"
+                             "from that package - just put it somewhere in the PATH and we'll find it.\n"));
+    return rc;
+}
+
+
+/**
+ * Loads the dbghelp.dll, check that it's the right version, and
+ * resolves all the symbols we need.
+ *
+ * @returns IPRT status code.
+ */
+static int kdbgModDHLoadDbgHelp(void)
+{
+    if (g_hDbgHelp)
+        return 0;
+
+    /* primitive locking - make some useful API for this kind of spinning! */
+    static volatile long s_lLock = 0;
+    while (InterlockedCompareExchange(&s_lLock, 1, 0))
+        while (s_lLock)
+            Sleep(1);
+    if (g_hDbgHelp)
+    {
+        InterlockedExchange(&s_lLock, 0);
+        return 0;
+    }
+
+    /*
+     * Load it - try current dir first.
+     */
+    char szPath[260];
+    int rc = kdbgModDHFindDbgHelp(szPath, sizeof(szPath));
+    if (rc)
+    {
+        InterlockedExchange(&s_lLock, 0);
+        return rc;
+    }
+
+    HMODULE hmod = LoadLibraryEx(szPath, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
+    if (!hmod)
+    {
+        DWORD Err = GetLastError();
+        int rc = kdbgModDHConvWinError(Err);
+        InterlockedExchange(&s_lLock, 0);
+        kDbgAssertMsgFailedReturn(("Failed to load '%s', Err=%d rc=%d\n", szPath, Err, rc), rc);
+    }
+
+    /*
+     * Check the API version (too).
+     */
+    LPAPI_VERSION (WINAPI *pfnImagehlpApiVersion)(VOID);
+    FARPROC *ppfn = (FARPROC *)&pfnImagehlpApiVersion;
+    *ppfn = GetProcAddress(hmod, "ImagehlpApiVersion");
+    if (*ppfn)
+    {
+        LPAPI_VERSION pVersion = pfnImagehlpApiVersion();
+        if (    pVersion
+            &&  (   pVersion->MajorVersion > 4
+                 || (pVersion->MajorVersion == 4 && pVersion->MinorVersion > 0)
+                 || (pVersion->MajorVersion == 4 && pVersion->MinorVersion == 0 && pVersion->Revision >= 5)
+                )
+           )
+        {
+            /*
+             * Resolve the entrypoints we need.
+             */
+            static const struct
+            {
+                const char *pszName;
+                FARPROC *ppfn;
+            }   s_aFunctions[] =
+            {
+                { "SymInitialize",      (FARPROC *)&g_pfnSymInitialize },
+                { "SymCleanup",         (FARPROC *)&g_pfnSymCleanup },
+                { "SymSetOptions",      (FARPROC *)&g_pfnSymSetOptions },
+                { "SymLoadModule64",    (FARPROC *)&g_pfnSymLoadModule64 },
+                { "SymFromAddr",        (FARPROC *)&g_pfnSymFromAddr },
+                { "SymFromAddr",        (FARPROC *)&g_pfnSymFromAddr },
+                { "SymGetLineFromAddr64", (FARPROC *)&g_pfnSymGetLineFromAddr64 },
+            };
+            for (unsigned i = 0; i < K_ELEMENTS(s_aFunctions); i++)
+            {
+                FARPROC pfn = GetProcAddress(hmod, s_aFunctions[i].pszName);
+                if (!pfn)
+                {
+                    DWORD Err = GetLastError();
+                    rc = kdbgModDHConvWinError(Err);
+                    kDbgAssertMsgFailed(("Failed to resolve %s in dbghelp, Err=%d rc=%d\n",
+                                         s_aFunctions[i].pszName, Err, rc));
+                    break;
+                }
+                *s_aFunctions[i].ppfn = pfn;
+            }
+            if (!rc)
+            {
+                g_hDbgHelp = hmod;
+                Sleep(1);
+                InterlockedExchange(&s_lLock, 0);
+                return 0;
+            }
+        }
+        else
+        {
+            rc = KDBG_ERR_DBGHLP_VERSION_MISMATCH;
+            kDbgAssertMsgFailed(("ImagehlpApiVersion -> %p and MajorVersion=%d.\n", pVersion, pVersion ? pVersion->MajorVersion : 0));
+        }
+    }
+    else
+    {
+        DWORD Err = GetLastError();
+        rc = kdbgModDHConvWinError(Err);
+        kDbgAssertMsgFailed(("Failed to resolve ImagehlpApiVersionEx in dbghelp, Err=%d rc=%d\n", Err, rc));
+    }
+    FreeLibrary(hmod);
+    InterlockedExchange(&s_lLock, 0);
+    return rc;
+}
+
+
+/**
+ * @copydoc KDBGMODOPS::pfnOpen
+ */
+static int kdbgModDHOpen(PKDBGMOD *ppMod, PKRDR pRdr, KBOOL fCloseRdr, KFOFF off, KFOFF cb, struct KLDRMOD *pLdrMod)
+{
+    /*
+     * This reader doesn't support partial files.
+     * Also weed out small files early on as they cannot be
+     * PE images and will only cause read errors
+     */
+    if (    off != 0
+        ||  cb != KFOFF_MAX)
+        return KDBG_ERR_UNKOWN_FORMAT;
+    if (kRdrSize(pRdr) < sizeof(IMAGE_NT_HEADERS32) + sizeof(IMAGE_SECTION_HEADER))
+        return KDBG_ERR_UNKOWN_FORMAT;
+
+    /*
+     * We need to read the section headers and get the image size.
+     */
+    /* Find the PE header magic. */
+    KU32 offHdr = 0;
+    KU32 u32Magic;
+    int rc = kRdrRead(pRdr, &u32Magic, sizeof(u32Magic), 0);
+    kDbgAssertRCReturn(rc, rc);
+    if ((KU16)u32Magic == IMAGE_DOS_SIGNATURE)
+    {
+        rc = kRdrRead(pRdr, &offHdr, sizeof(offHdr), K_OFFSETOF(IMAGE_DOS_HEADER, e_lfanew));
+        kDbgAssertRCReturn(rc, rc);
+        if (!offHdr)
+            return KDBG_ERR_FORMAT_NOT_SUPPORTED;
+        if (    offHdr < sizeof(IMAGE_DOS_SIGNATURE)
+            ||  offHdr >= kRdrSize(pRdr) - 4)
+            return KDBG_ERR_BAD_EXE_FORMAT;
+
+        rc = kRdrRead(pRdr, &u32Magic, sizeof(u32Magic), offHdr);
+        kDbgAssertRCReturn(rc, rc);
+    }
+    if (u32Magic != IMAGE_NT_SIGNATURE)
+        return KDBG_ERR_FORMAT_NOT_SUPPORTED;
+
+    /* read the file header and the image size in the optional header.. */
+    IMAGE_FILE_HEADER FHdr;
+    rc = kRdrRead(pRdr, &FHdr, sizeof(FHdr), offHdr + K_OFFSETOF(IMAGE_NT_HEADERS32, FileHeader));
+    kDbgAssertRCReturn(rc, rc);
+
+    KU32 cbImage;
+    if (FHdr.SizeOfOptionalHeader == sizeof(IMAGE_OPTIONAL_HEADER32))
+        rc = kRdrRead(pRdr, &cbImage, sizeof(cbImage),
+                      offHdr + K_OFFSETOF(IMAGE_NT_HEADERS32, OptionalHeader.SizeOfImage));
+    else if (FHdr.SizeOfOptionalHeader == sizeof(IMAGE_OPTIONAL_HEADER64))
+        rc = kRdrRead(pRdr, &cbImage, sizeof(cbImage),
+                      offHdr + K_OFFSETOF(IMAGE_NT_HEADERS64, OptionalHeader.SizeOfImage));
+    else
+        kDbgAssertFailedReturn(KDBG_ERR_BAD_EXE_FORMAT);
+    kDbgAssertRCReturn(rc, rc);
+
+    /*
+     * Load dbghelp.dll.
+     */
+    rc = kdbgModDHLoadDbgHelp();
+    if (rc)
+        return rc;
+
+    /*
+     * Allocate the module and read/construct the section headers.
+     */
+    PKDBGMODDBGHELP pModDH = (PKDBGMODDBGHELP)kHlpAlloc(K_OFFSETOF(KDBGMODDBGHELP, aSections[FHdr.NumberOfSections + 2]));
+    kDbgAssertReturn(pModDH, KERR_NO_MEMORY);
+    pModDH->Core.u32Magic   = KDBGMOD_MAGIC;
+    pModDH->Core.pOps       = &g_kDbgModWinDbgHelpOpen;
+    pModDH->Core.pRdr       = pRdr;
+    pModDH->Core.fCloseRdr  = fCloseRdr;
+    pModDH->Core.pLdrMod    = pLdrMod;
+    pModDH->cbImage         = cbImage;
+    pModDH->cSections       = 1 + FHdr.NumberOfSections;
+
+    rc = kRdrRead(pRdr, &pModDH->aSections[1], sizeof(pModDH->aSections[0]) * FHdr.NumberOfSections,
+                  offHdr + K_OFFSETOF(IMAGE_NT_HEADERS32, OptionalHeader) + FHdr.SizeOfOptionalHeader);
+    if (!rc)
+    {
+        PIMAGE_SECTION_HEADER pSH = &pModDH->aSections[0];
+        kHlpMemCopy(pSH->Name, "headers", sizeof(pSH->Name));
+        pSH->Misc.VirtualSize       = pModDH->aSections[1].VirtualAddress;
+        pSH->VirtualAddress         = 0;
+        pSH->SizeOfRawData          = pSH->Misc.VirtualSize;
+        pSH->PointerToRawData       = 0;
+        pSH->PointerToRelocations   = 0;
+        pSH->PointerToLinenumbers   = 0;
+        pSH->NumberOfRelocations    = 0;
+        pSH->NumberOfLinenumbers    = 0;
+        pSH->Characteristics        = IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_ALIGN_4BYTES | IMAGE_SCN_MEM_READ;
+
+        KU32 uTheEnd = pModDH->aSections[FHdr.NumberOfSections].VirtualAddress
+                     + pModDH->aSections[FHdr.NumberOfSections].Misc.VirtualSize;
+        if (uTheEnd < cbImage)
+        {
+            pSH = &pModDH->aSections[pModDH->cSections++];
+            kHlpMemCopy(pSH->Name, "tail\0\0\0", sizeof(pSH->Name));
+            pSH->Misc.VirtualSize       = cbImage - uTheEnd;
+            pSH->VirtualAddress         = uTheEnd;
+            pSH->SizeOfRawData          = pSH->Misc.VirtualSize;
+            pSH->PointerToRawData       = 0;
+            pSH->PointerToRelocations   = 0;
+            pSH->PointerToLinenumbers   = 0;
+            pSH->NumberOfRelocations    = 0;
+            pSH->NumberOfLinenumbers    = 0;
+            pSH->Characteristics        = IMAGE_SCN_CNT_UNINITIALIZED_DATA | IMAGE_SCN_ALIGN_1BYTES | IMAGE_SCN_MEM_READ;
+        }
+
+        /*
+         * Find a new dbghelp handle.
+         *
+         * We assume 4GB of handles outlast most debugging sessions, or in anyways that
+         * when we start reusing handles they are no longer in use. :-)
+         */
+        static volatile long s_u32LastHandle = 1;
+        HANDLE hSymInst = (HANDLE)InterlockedIncrement(&s_u32LastHandle);
+        while (     hSymInst == INVALID_HANDLE_VALUE
+               ||   hSymInst == (HANDLE)0
+               ||   hSymInst == GetCurrentProcess())
+            hSymInst = (HANDLE)InterlockedIncrement(&s_u32LastHandle);
+
+        /*
+         * Initialize dbghelp and try open the specified module.
+         */
+        if (g_pfnSymInitialize(hSymInst, NULL, FALSE))
+        {
+            g_pfnSymSetOptions(SYMOPT_LOAD_LINES | SYMOPT_AUTO_PUBLICS | SYMOPT_ALLOW_ABSOLUTE_SYMBOLS);
+
+            KIPTR NativeFH = kRdrNativeFH(pRdr);
+            DWORD64 ImageBase = g_pfnSymLoadModule64(hSymInst, NativeFH == -1 ? NULL : (HANDLE)NativeFH,
+                                                     kRdrName(pRdr), NULL, 0x00400000, 0);
+            if (ImageBase)
+            {
+                pModDH->hSymInst        = hSymInst;
+                pModDH->ImageBase       = ImageBase;
+                *ppMod = &pModDH->Core;
+                return rc;
+            }
+
+            DWORD Err = GetLastError();
+            rc = kdbgModDHConvWinError(Err);
+            kDbgAssertMsgFailed(("SymLoadModule64 failed: Err=%d rc=%d\n", Err, rc));
+            g_pfnSymCleanup(hSymInst);
+        }
+        else
+        {
+            DWORD Err = GetLastError();
+            rc = kdbgModDHConvWinError(Err);
+            kDbgAssertMsgFailed(("SymInitialize failed: Err=%d rc=%d\n", Err, rc));
+        }
+    }
+    else
+        kDbgAssertRC(rc);
+
+    kHlpFree(pModDH);
+    return rc;
+}
+
+
+/**
+ * Methods for a PE module.
+ */
+KDBGMODOPS const g_kDbgModWinDbgHelpOpen =
+{
+    "Windows DbgHelp",
+    NULL,
+    kdbgModDHOpen,
+    kdbgModDHClose,
+    kdbgModDHQuerySymbol,
+    kdbgModDHQueryLine,
+    "Windows DbgHelp"
+};
+
diff --git a/src/lib/kStuff/kDbg/kDbgModule.cpp b/src/lib/kStuff/kDbg/kDbgModule.cpp
new file mode 100644
index 0000000..c43fb16
--- /dev/null
+++ b/src/lib/kStuff/kDbg/kDbgModule.cpp
@@ -0,0 +1,440 @@
+/* $Id: kDbgModule.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kDbg - The Debug Info Reader, Module API.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "kDbgInternal.h"
+#include <k/kHlpString.h>
+#include <k/kHlpAlloc.h>
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/**
+ * The built-in debug module readers.
+ */
+static PCKDBGMODOPS const g_aBuiltIns[] =
+{
+#if K_OS == K_OS_WINDOWS
+    &g_kDbgModWinDbgHelpOpen,
+#endif
+    &g_kDbgModLdr,
+//    &g_kDbgModCv8,
+//    &g_kDbgModDwarf,
+//    &g_kDbgModHll,
+//    &g_kDbgModStabs,
+//    &g_kDbgModSym,
+//    &g_kDbgModMapILink,
+//    &g_kDbgModMapMSLink,
+//    &g_kDbgModMapNm,
+//    &g_kDbgModMapWLink
+};
+
+/**
+ * The debug module readers registered at runtime.
+ */
+static PKDBGMODOPS g_pHead = NULL;
+
+
+/**
+ * Register a debug module reader with the kDbgModule component.
+ *
+ * Dynamically registered readers are kept in FIFO order, and external
+ * readers will be tried after the builtin ones.
+ *
+ * Like all other kDbg APIs serializing is left to the caller.
+ *
+ * @returns 0 on success.
+ * @returns KERR_INVALID_POINTER if pOps is missing bits.
+ * @returns KERR_INVALID_PARAMETER if pOps is already in the list.
+ * @param   pOps        The reader method table, kDbg takes owner ship of
+ *                      this. This must be writeable as the pNext pointer
+ *                      will be update. It must also stick around for as
+ *                      long as kDbg is in use.
+ */
+KDBG_DECL(int) kDbgModuleRegisterReader(PKDBGMODOPS pOps)
+{
+    /*
+     * Validate input.
+     */
+    kDbgAssertPtrReturn(pOps, KERR_INVALID_POINTER);
+    kDbgAssertPtrReturn(pOps->pszName, KERR_INVALID_POINTER);
+    kDbgAssertPtrReturn(pOps->pfnOpen, KERR_INVALID_POINTER);
+    kDbgAssertPtrReturn(pOps->pfnClose, KERR_INVALID_POINTER);
+    kDbgAssertPtrReturn(pOps->pfnQuerySymbol, KERR_INVALID_POINTER);
+    kDbgAssertPtrReturn(pOps->pfnQueryLine, KERR_INVALID_POINTER);
+    kDbgAssertPtrReturn(pOps->pszName2, KERR_INVALID_POINTER);
+    if (kHlpStrComp(pOps->pszName, pOps->pszName2))
+        return KERR_INVALID_PARAMETER;
+    kDbgAssertReturn(pOps->pNext == NULL, KERR_INVALID_PARAMETER);
+
+    /*
+     * Link it into the list.
+     */
+    if (!g_pHead)
+        g_pHead = pOps;
+    else
+    {
+        PKDBGMODOPS pPrev = g_pHead;
+        while (pPrev->pNext)
+            pPrev = pPrev->pNext;
+        kDbgAssertReturn(pPrev != pOps, KERR_INVALID_PARAMETER);
+        pPrev->pNext = pOps;
+    }
+    return 0;
+}
+
+
+/**
+ * Deregister a debug module reader previously registered using
+ * the kDbgModuleRegisterReader API.
+ *
+ * Deregistering a reader does not mean that non of its functions
+ * will be called after successful return, it only means that it
+ * will no longer be subjected to new module.
+ *
+ * @returns 0 on success.
+ * @returns KERR_INVALID_POINTER if pOps isn't a valid pointer.
+ * @returns KERR_INVALID_PARAMETER if pOps wasn't registered.
+ * @param   pOps    The debug module method table to deregister.
+ */
+KDBG_DECL(int) kDbgModuleDeregisterReader(PKDBGMODOPS pOps)
+{
+    /*
+     * Validate the pointer.
+     */
+    kDbgAssertPtrReturn(pOps, KERR_INVALID_POINTER);
+
+    /*
+     * Find it in the list and unlink it.
+     */
+    if (g_pHead == pOps)
+        g_pHead = pOps->pNext;
+    else
+    {
+        PKDBGMODOPS pPrev = g_pHead;
+        while (pPrev && pPrev->pNext != pOps)
+            pPrev = pPrev->pNext;
+        if (!pPrev)
+            return KERR_INVALID_PARAMETER;
+        pPrev->pNext = pOps->pNext;
+    }
+    pOps->pNext = NULL;
+    return 0;
+}
+
+
+
+/**
+ * Worker for the kDbgModuleOpen* APIs.
+ *
+ * This will make sure the reader is buffered. I will also take care of
+ * closing the reader opened by kDbgModuleOpen on failure.
+ *
+ * @returns 0 on success. An appropriate kErrors status code on failure.
+ * @param   ppDbgMod        Where to store the new debug module reader instance.
+ * @param   pRdr            The file provider.
+ * @param   fCloseRdr       Whether pRdr should be close or not. This applies both
+ *                          to the failure path and to the success path, where it'll
+ *                          be close when the module is closed by kDbgModuleClose().
+ * @param   off             The offset into the file where the debug info is supposed
+ *                          to be found.
+ *                          This is 0 if the entire file is the subject.
+ * @param   cb              The size of the debug info part of the file.
+ *                          This is KFOFF_MAX if the entire file is the subject.
+ * @param   pLdrMod         An optional kLdrMod association.
+ */
+static int kdbgModuleOpenWorker(PPKDBGMOD ppDbgMod, PKRDR pRdr, KBOOL fCloseRdr, KFOFF off, KFOFF cb, struct KLDRMOD *pLdrMod)
+{
+    /*
+     * If the reader isn't buffered create a buffered wrapper for it.
+     */
+    int rc;
+    PKRDR pRdrWrapped = NULL;
+    if (!kRdrBufIsBuffered(pRdr))
+    {
+        rc = kRdrBufWrap(&pRdrWrapped, pRdr, fCloseRdr);
+        if (rc)
+        {
+            if (fCloseRdr)
+                kRdrClose(pRdr);
+            return rc;
+        }
+        pRdr = pRdrWrapped;
+    }
+
+    /*
+     * Walk the built-in table and the list of registered readers
+     * and let each of them have a go at the file. Stop and return
+     * on the first one returning successfully.
+     */
+    rc = KDBG_ERR_UNKOWN_FORMAT;
+    for (KSIZE i = 0; i < K_ELEMENTS(g_aBuiltIns); i++)
+        if (g_aBuiltIns[i]->pfnOpen)
+        {
+            int rc2 = g_aBuiltIns[i]->pfnOpen(ppDbgMod, pRdr, fCloseRdr, off, cb, pLdrMod);
+            if (!rc2)
+                return 0;
+            if (rc2 != KDBG_ERR_UNKOWN_FORMAT && rc == KDBG_ERR_UNKOWN_FORMAT)
+                rc = rc2;
+        }
+
+    for (PKDBGMODOPS pCur = g_pHead; pCur; pCur = pCur->pNext)
+        if (pCur->pfnOpen)
+        {
+            int rc2 = pCur->pfnOpen(ppDbgMod, pRdr, fCloseRdr, off, cb, pLdrMod);
+            if (!rc2)
+                return 0;
+            if (rc2 != KDBG_ERR_UNKOWN_FORMAT && rc == KDBG_ERR_UNKOWN_FORMAT)
+                rc = rc2;
+        }
+
+    if (pRdrWrapped)
+        kRdrClose(pRdrWrapped);
+    else if (fCloseRdr)
+        kRdrClose(pRdr);
+    return rc;
+}
+
+
+/**
+ * Opens a debug module reader for the specified file or file section
+ *
+ * @returns kStuff status code.
+ * @param   ppDbgMod            Where to store the debug module reader handle.
+ * @param   pRdr                The file reader.
+ * @param   off                 The offset of the file section. If the entire file, pass 0.
+ * @param   cb                  The size of the file section. If the entire file, pass KFOFF_MAX.
+ * @param   pLdrMod             Associated kLdr module that the kDbg component can use to
+ *                              verify and suplement the debug info found in the file specified
+ *                              by pszFilename. The module will be used by kDbg for as long as
+ *                              the returned kDbg module remains open.
+ *                              This is an optional parameter, pass NULL if no kLdr module at hand.
+ */
+KDBG_DECL(int) kDbgModuleOpenFilePart(PPKDBGMOD ppDbgMod, PKRDR pRdr, KFOFF off, KFOFF cb, struct KLDRMOD *pLdrMod)
+{
+    /*
+     * Validate input.
+     */
+    kDbgAssertPtrReturn(ppDbgMod, KERR_INVALID_POINTER);
+    kDbgAssertPtrReturn(pRdr, KERR_INVALID_POINTER);
+    kDbgAssertPtrNullReturn(pLdrMod, KERR_INVALID_POINTER);
+    kDbgAssertMsgReturn(off >= 0 && off < KFOFF_MAX, (KFOFF_PRI "\n", off), KERR_INVALID_OFFSET);
+    kDbgAssertMsgReturn(cb >= 0 && cb <= KFOFF_MAX, (KFOFF_PRI "\n", cb), KERR_INVALID_SIZE);
+    kDbgAssertMsgReturn(off + cb > off, ("off=" KFOFF_PRI " cb=" KFOFF_PRI "\n", off, cb), KERR_INVALID_RANGE);
+    *ppDbgMod = NULL;
+
+    /*
+     * Hand it over to the internal worker.
+     */
+    return kdbgModuleOpenWorker(ppDbgMod, pRdr, K_FALSE /* fCloseRdr */, off, cb, pLdrMod);
+}
+
+
+/**
+ * Opens a debug module reader for the specified file.
+ *
+ * @returns kStuff status code.
+ * @param   ppDbgMod            Where to store the debug module reader handle.
+ * @param   pRdr                The file reader.
+ * @param   pLdrMod             Associated kLdr module that the kDbg component can use to
+ *                              verify and suplement the debug info found in the file specified
+ *                              by pszFilename. The module will be used by kDbg for as long as
+ *                              the returned kDbg module remains open.
+ *                              This is an optional parameter, pass NULL if no kLdr module at hand.
+ */
+KDBG_DECL(int) kDbgModuleOpenFile(PPKDBGMOD ppDbgMod, PKRDR pRdr, struct KLDRMOD *pLdrMod)
+{
+    return kDbgModuleOpenFilePart(ppDbgMod, pRdr, 0, KFOFF_MAX, pLdrMod);
+}
+
+
+/**
+ * Opens the debug info for a specified executable module.
+ *
+ * @returns kStuff status code.
+ * @param   ppDbgMod            Where to store the debug module handle.
+ * @param   pszFilename         The name of the file containing debug info and/or which
+ *                              debug info is wanted.
+ * @param   pLdrMod             Associated kLdr module that the kDbg component can use to
+ *                              verify and suplement the debug info found in the file specified
+ *                              by pszFilename. The module will be used by kDbg for as long as
+ *                              the returned kDbg module remains open.
+ *                              This is an optional parameter, pass NULL if no kLdr module at hand.
+ */
+KDBG_DECL(int) kDbgModuleOpen(PPKDBGMOD ppDbgMod, const char *pszFilename, struct KLDRMOD *pLdrMod)
+{
+    /*
+     * Validate input.
+     */
+    kDbgAssertPtrReturn(ppDbgMod, KERR_INVALID_POINTER);
+    kDbgAssertPtrReturn(pszFilename, KERR_INVALID_POINTER);
+    kDbgAssertMsgReturn(*pszFilename, ("%p\n", pszFilename), KERR_INVALID_PARAMETER);
+    kDbgAssertPtrNullReturn(pLdrMod, KERR_INVALID_POINTER);
+    *ppDbgMod = NULL;
+
+    /*
+     * Open the file and see if we can read it.
+     */
+    PKRDR pRdr;
+    int rc = kRdrBufOpen(&pRdr, pszFilename);
+    if (rc)
+        return rc;
+    rc = kdbgModuleOpenWorker(ppDbgMod, pRdr, K_TRUE /* fCloseRdr */, 0, KFOFF_MAX, pLdrMod);
+    return rc;
+}
+
+
+/**
+ * Closes the module.
+ *
+ * @returns IPRT status code.
+ * @param   pMod        The module handle.
+ */
+KDBG_DECL(int) kDbgModuleClose(PKDBGMOD pMod)
+{
+    KDBGMOD_VALIDATE(pMod);
+    int rc = pMod->pOps->pfnClose(pMod);
+    if (!rc)
+    {
+        pMod->u32Magic++;
+        kHlpFree(pMod);
+    }
+    return rc;
+}
+
+
+/**
+ * Gets a symbol by segment:offset.
+ * This will be approximated to the nearest symbol if there is no exact match.
+ *
+ * @returns IPRT status code.
+ * @param   pMod        The module.
+ * @param   iSegment    The segment this offset is relative to.
+ *                      The -1 segment is special, it means that the addres is relative to
+ *                      the image base. The image base is where the first bit of the image
+ *                      is mapped during load.
+ * @param   off         The offset into the segment.
+ * @param   pSym        Where to store the symbol details.
+ */
+KDBG_DECL(int) kDbgModuleQuerySymbol(PKDBGMOD pMod, KI32 iSegment, KDBGADDR off, PKDBGSYMBOL pSym)
+{
+    KDBGMOD_VALIDATE(pMod);
+    kDbgAssertPtrReturn(pSym, KERR_INVALID_POINTER);
+    return pMod->pOps->pfnQuerySymbol(pMod, iSegment, off, pSym);
+}
+
+
+/**
+ * Gets & allocates a symbol by segment:offset.
+ * This will be approximated to the nearest symbol if there is no exact match.
+ *
+ * @returns IPRT status code.
+ * @param   pMod        The module.
+ * @param   iSegment    The segment this offset is relative to.
+ *                      The -1 segment is special, it means that the addres is relative to
+ *                      the image base. The image base is where the first bit of the image
+ *                      is mapped during load.
+ * @param   off         The offset into the segment.
+ * @param   ppSym       Where to store the pointer to the symbol info.
+ *                      Free the returned symbol using kDbgSymbolFree().
+ */
+KDBG_DECL(int) kDbgModuleQuerySymbolA(PKDBGMOD pMod, KI32 iSegment, KDBGADDR off, PPKDBGSYMBOL ppSym)
+{
+    kDbgAssertPtrReturn(ppSym, KERR_INVALID_POINTER);
+
+    KDBGSYMBOL Sym;
+    int rc = kDbgModuleQuerySymbol(pMod, iSegment, off, &Sym);
+    if (!rc)
+    {
+        *ppSym = kDbgSymbolDup(&Sym);
+        if (!*ppSym)
+            rc = KERR_NO_MEMORY;
+    }
+    else
+        *ppSym = NULL;
+    return rc;
+}
+
+
+/**
+ * Gets a line number entry by segment:offset.
+ * This will be approximated to the nearest line number there is no exact match.
+ *
+ * @returns IPRT status code.
+ * @param   pMod        The module.
+ * @param   iSegment    The segment this offset is relative to.
+ *                      The -1 segment is special, it means that the addres is relative to
+ *                      the image base. The image base is where the first bit of the image
+ *                      is mapped during load.
+ * @param   off         The offset into the segment.
+ * @param   pLine       Where to store the line number details.
+ */
+KDBG_DECL(int) kDbgModuleQueryLine(PKDBGMOD pMod, KI32 iSegment, KDBGADDR off, PKDBGLINE pLine)
+{
+    KDBGMOD_VALIDATE(pMod);
+    kDbgAssertPtrReturn(pLine, KERR_INVALID_POINTER);
+    return pMod->pOps->pfnQueryLine(pMod, iSegment, off, pLine);
+}
+
+
+/**
+ * Gets & allocates a line number entry by segment:offset.
+ * This will be approximated to the nearest line number there is no exact match.
+ *
+ * @returns IPRT status code.
+ * @param   pMod        The module.
+ * @param   iSegment    The segment this offset is relative to.
+ *                      The -1 segment is special, it means that the addres is relative to
+ *                      the image base. The image base is where the first bit of the image
+ *                      is mapped during load.
+ * @param   off         The offset into the segment.
+ * @param   ppLine      Where to store the pointer to the line number info.
+ *                      Free the returned line number using kDbgLineFree().
+ */
+KDBG_DECL(int) kDbgModuleQueryLineA(PKDBGMOD pMod, KI32 iSegment, KDBGADDR off, PPKDBGLINE ppLine)
+{
+    kDbgAssertPtrReturn(ppLine, KERR_INVALID_POINTER);
+
+    KDBGLINE Line;
+    int rc = kDbgModuleQueryLine(pMod, iSegment, off, &Line);
+    if (!rc)
+    {
+        *ppLine = kDbgLineDup(&Line);
+        if (!*ppLine)
+            rc = KERR_NO_MEMORY;
+    }
+    else
+        *ppLine = NULL;
+    return rc;
+}
+
diff --git a/src/lib/kStuff/kDbg/kDbgSpace.cpp b/src/lib/kStuff/kDbg/kDbgSpace.cpp
new file mode 100644
index 0000000..2d6f1c0
--- /dev/null
+++ b/src/lib/kStuff/kDbg/kDbgSpace.cpp
@@ -0,0 +1,192 @@
+/* $Id: kDbgSpace.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kDbg - The Debug Info Reader, Address Space Manager.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "kDbgInternal.h"
+#include <k/kHlpAlloc.h>
+#include <k/kHlpString.h>
+#include <k/kAvl.h>
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/** Pointer to a name space module. */
+typedef struct KDBGSPACEMOD *PKDBGSPACEMOD;
+
+/**
+ * Tracks a module segment in the address space.
+ *
+ * These segments are organized in two trees, by address in the
+ * KDBGSPACE::pSegRoot tree and by selector value in the
+ * KDBGSPACE::pSegSelRoot tree.
+ *
+ * While the debug module reader could easily provide us with
+ * segment names and it could perhaps be interesting to lookup
+ * a segment by its name in some situations, this has been
+ * considered too much bother for now. :-)
+ */
+typedef struct KDBGSPACESEG
+{
+    /** The module segment index. */
+    KI32                    iSegment;
+    /** The address space module structure this segment belongs to. */
+    PKDBGSPACEMOD           pSpaceMod;
+} KDBGSPACESEG;
+typedef KDBGSPACESEG *PKDBGSPACESEG;
+
+
+/**
+ * Track a module in the name space.
+ *
+ * Each module in the address space can be addressed efficiently
+ * by module name. The module name has to be unique.
+ */
+typedef struct KDBGSPACEMOD
+{
+    /** The module name hash. */
+    KU32                    u32Hash;
+    /** The length of the module name. */
+    KU32                    cchName;
+    /** The module name. */
+    char                   *pszName;
+    /** The next module in the same bucket. */
+    PKDBGSPACEMOD           pNext;
+    /** Pointer to the debug module reader. */
+    PKDBGMOD                pMod;
+    /** The number of segments. */
+    KU32                    cSegs;
+    /** The segment array. (variable length) */
+    KDBGSPACESEG            aSegs[1];
+} KDBGSPACEMOD;
+
+
+typedef struct KDBGCACHEDSYM *PKDBGCACHEDSYM;
+/**
+ * A cached symbol.
+ */
+typedef struct KDBGCACHEDSYM
+{
+    /** The symbol name hash. */
+    KU32                    u32Hash;
+    /** The next symbol in the same bucket. */
+    PKDBGCACHEDSYM          pNext;
+    /** The next symbol belonging to the same module as this. */
+    PKDBGCACHEDSYM          pNextMod;
+    /** The cached symbol information. */
+    KDBGSYMBOL              Sym;
+} KDBGCACHEDSYM;
+
+
+/**
+ * A symbol cache.
+ */
+typedef struct KDBGSYMCACHE
+{
+    /** The symbol cache magic. (KDBGSYMCACHE_MAGIC) */
+    KU32                    u32Magic;
+    /** The maximum number of symbols.*/
+    KU32                    cMax;
+    /** The current number of symbols.*/
+    KU32                    cCur;
+    /** The number of hash buckets. */
+    KU32                    cBuckets;
+    /** The address lookup tree. */
+    PKDBGADDRAVL            pAddrTree;
+    /** Array of hash buckets.
+     * The size is selected according to the cache size. */
+    PKDBGCACHEDSYM         *paBuckets[1];
+} KDBGSYMCACHE;
+typedef KDBGSYMCACHE *PKDBGSYMCACHE;
+
+
+/**
+ * A user symbol record.
+ *
+ * The user symbols are organized in the KDBGSPACE::pUserRoot tree
+ * and form an overlay that overrides the debug info retrieved from
+ * the KDBGSPACE::pSegRoot tree.
+ *
+ * In the current implementation the user symbols are unique and
+ * one would have to first delete a symbol in order to add another
+ * at the same address. This may be changed later, perhaps.
+ */
+typedef struct KDBGSPACEUSERSYM
+{
+
+} KDBGSPACEUSERSYM;
+typedef KDBGSPACEUSERSYM *PKDBGSPACEUSERSYM;
+
+
+
+/**
+ * Address space.
+ */
+typedef struct KDBGSPACE
+{
+    /** The addresspace magic. (KDBGSPACE_MAGIC) */
+    KU32            u32Magic;
+    /** User defined address space identifier or data pointer. */
+    KUPTR           uUser;
+    /** The name of the address space. (Optional) */
+    const char     *pszName;
+
+
+} KDBGSPACE;
+/** Pointer to an address space. */
+typedef struct KDBGSPACE *PKDBGSPACE;
+/** Pointer to an address space pointer. */
+typedef PKDBGSPACE *PPKDBGSPACE;
+
+
+KDBG_DECL(int) kDbgSpaceCreate(PPDBGSPACE ppSpace, KDBGADDR LowAddr, DBGADDR HighAddr,
+                               KUPTR uUser, const char *pszName)
+{
+    /*
+     * Validate input.
+     */
+    kDbgAssertPtrReturn(ppSpace);
+    *ppSpace = NULL;
+    kDbgAssertPtrNullReturn(pszName);
+    kDbgAssertReturn(LowAddr < HighAddr);
+
+    /*
+     * Create and initialize the address space.
+     */
+    PKDBGSPACE pSpace = (PKDBGSPACE)kHlpAlloc(sizeof(*pSpace));
+    if (!pSpace)
+        return KERR_NO_MEMORY;
+    pSpace->u32Magic = KDBGSPACE_MAGIC;
+    pSpace->uUser = uUser;
+    pSpace->pszName = pszName;
+
+}
diff --git a/src/lib/kStuff/kDbg/kDbgSymbol.cpp b/src/lib/kStuff/kDbg/kDbgSymbol.cpp
new file mode 100644
index 0000000..d542807
--- /dev/null
+++ b/src/lib/kStuff/kDbg/kDbgSymbol.cpp
@@ -0,0 +1,78 @@
+/* $Id: kDbgSymbol.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kDbg - The Debug Info Reader, Symbols.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "kDbgInternal.h"
+#include <k/kHlpAlloc.h>
+
+
+/**
+ * Duplicates a symbol.
+ *
+ * To save heap space, the returned symbol will not own more heap space than
+ * it strictly need to. So, it's not possible to append stuff to the symbol
+ * or anything of that kind.
+ *
+ * @returns Pointer to the duplicate.
+ *          This must be freed using kDbgSymbolFree().
+ * @param   pSymbol     The symbol to be duplicated.
+ */
+KDBG_DECL(PKDBGSYMBOL) kDbgSymbolDup(PCKDBGSYMBOL pSymbol)
+{
+    kDbgAssertPtrReturn(pSymbol, NULL);
+    KSIZE cb = K_OFFSETOF(KDBGSYMBOL, szName[pSymbol->cchName + 1]);
+    PKDBGSYMBOL pNewSymbol = (PKDBGSYMBOL)kHlpDup(pSymbol, cb);
+    if (pNewSymbol)
+        pNewSymbol->cbSelf = cb;
+    return pNewSymbol;
+}
+
+
+/**
+ * Frees a symbol obtained from the kDbg API.
+ *
+ * @returns 0 on success.
+ * @returns KERR_INVALID_POINTER if pSymbol isn't a valid pointer.
+ *
+ * @param   pSymbol     The symbol to be freed. The null pointer is ignored.
+ */
+KDBG_DECL(int) kDbgSymbolFree(PKDBGSYMBOL pSymbol)
+{
+    if (!pSymbol)
+    {
+        kDbgAssertPtrReturn(pSymbol, KERR_INVALID_POINTER);
+        pSymbol->cbSelf = 0;
+        kHlpFree(pSymbol);
+    }
+    return 0;
+}
+
diff --git a/src/lib/kStuff/kErr/Makefile.kmk b/src/lib/kStuff/kErr/Makefile.kmk
new file mode 100644
index 0000000..de11e20
--- /dev/null
+++ b/src/lib/kStuff/kErr/Makefile.kmk
@@ -0,0 +1,61 @@
+# $Id: Makefile.kmk 29 2009-07-01 20:30:29Z bird $
+## @file
+# kErr - The Status Code API, sub-makefile.
+#
+
+#
+# Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+DEPTH ?= ..
+SUB_DEPTH = ..
+include $(PATH_KBUILD)/subheader.kmk
+
+#
+# kHlpBaseStatic
+#
+LIBRARIES += kErrStatic
+kErrStatic_TEMPLATE = kStuffLIB
+kErrStatic_SOURCES = \
+	kErrName.c
+
+kErrName.c_DEPS = $(PATH_TARGET)/kErrNameConsts.h
+kErrName.c_INCS = $(PATH_TARGET)
+
+#
+# Generate case statements for kErrName().
+#
+$(PATH_TARGET)/kErrNameConsts.h: $(PATH_SUB_ROOT)/include/k/kErrors.h $(MAKEFILE_CURRENT) | $(call DIRDEP,$(PATH_TARGET))
+	$(RM) -f $@
+	$(SED) \
+		-e '/^#define  *\(K[A-Z_]*ERR_[^ ()]*\) .*$$/!d' \
+		-e 's/^#define  *\(K[A-Z_]*ERR_[^ ()]*\) .*$$/ERR_CONST(\1)/' \
+		-e '/K[A-Z_]*ERR_[A-Z0-9_]*BASE/d' \
+		-e '/K[A-Z_]*ERR_[A-Z0-9_]*END/d' \
+		$< > $@
+
+
+# Generate the rules
+include $(PATH_KBUILD)/subfooter.kmk
+
diff --git a/src/lib/kStuff/kErr/kErrName.c b/src/lib/kStuff/kErr/kErrName.c
new file mode 100644
index 0000000..a412e2a
--- /dev/null
+++ b/src/lib/kStuff/kErr/kErrName.c
@@ -0,0 +1,57 @@
+/* $Id: kErrName.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kErr - Status Code API, kErrName.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kErr.h>
+#include <k/kErrors.h>
+
+
+/**
+ * Translate the error code into a string containing
+ * the error constant.
+ *
+ * @returns Read only string with the constant name.
+ * @param   rc      The kErrors status code.
+ */
+KERR_DECL(const char *) kErrName(int rc)
+{
+    switch (rc)
+    {
+        case 0: return "SUCCESS";
+#define ERR_CONST(c) case c: return #c;
+#include "kErrNameConsts.h"
+#undef ERR_CONST
+        default:
+            return "KERR_UNKNOWN_ERROR";
+    }
+}
+
diff --git a/src/lib/kStuff/kHlp/Bare/Makefile.kup b/src/lib/kStuff/kHlp/Bare/Makefile.kup
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Bare/Makefile.kup
diff --git a/src/lib/kStuff/kHlp/Bare/kHlpBare-gcc.c b/src/lib/kStuff/kHlp/Bare/kHlpBare-gcc.c
new file mode 100644
index 0000000..889e48f
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Bare/kHlpBare-gcc.c
@@ -0,0 +1,223 @@
+/* $Id: kHlpBare-gcc.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpBare - The Dynamic Loader, Helper Functions for GCC.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <k/kLdr.h>
+#include "kHlp.h"
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+
+
+void *memchr(const void *pv, int ch, KSIZE cb)
+{
+    const char *pb = pv;
+    while (cb-- > 0)
+    {
+        if (*pb == ch)
+            return (void *)pb;
+        pb++;
+    }
+    return 0;
+}
+
+
+int memcmp(const void *pv1, const void *pv2, KSIZE cb)
+{
+    /*
+     * Pointer size pointer size.
+     */
+    if (    cb > 16
+        &&  !((KUPTR)pv1 & (sizeof(void *) - 1))
+        &&  !((KUPTR)pv2 & (sizeof(void *) - 1)) )
+    {
+        const KUPTR *pu1 = pv1;
+        const KUPTR *pu2 = pv2;
+        while (cb >= sizeof(KUPTR))
+        {
+            const KUPTR u1 = *pu1++;
+            const KUPTR u2 = *pu2++;
+            if (u1 != u2)
+                return u1 > u2 ? 1 : -1;
+            cb -= sizeof(KUPTR);
+        }
+        if (!cb)
+            return 0;
+        pv1 = (const void *)pu1;
+        pv2 = (const void *)pu2;
+    }
+
+    /*
+     * Byte by byte.
+     */
+    if (cb)
+    {
+        const unsigned char *pb1 = pv1;
+        const unsigned char *pb2 = pv2;
+        while (cb-- > 0)
+        {
+            const unsigned char b1 = *pb1++;
+            const unsigned char b2 = *pb2++;
+            if (b1 != b2)
+                return b1 > b2 ? 1 : -1;
+        }
+    }
+    return 0;
+}
+
+
+void *memcpy(void *pv1, const void *pv2, KSIZE cb)
+{
+    void *pv1Start = pv1;
+
+    /*
+     * Pointer size pointer size.
+     */
+    if (    cb > 16
+        &&  !((KUPTR)pv1 & (sizeof(void *) - 1))
+        &&  !((KUPTR)pv2 & (sizeof(void *) - 1)) )
+    {
+        KUPTR       *pu1 = pv1;
+        const KUPTR *pu2 = pv2;
+        while (cb >= sizeof(KUPTR))
+        {
+            cb -= sizeof(KUPTR);
+            *pu1++ = *pu2++;
+        }
+        if (!cb)
+            return 0;
+        pv1 = (void *)pu1;
+        pv2 = (const void *)pu2;
+    }
+
+    /*
+     * byte by byte
+     */
+    if (cb)
+    {
+        unsigned char       *pb1 = pv1;
+        const unsigned char *pb2 = pv2;
+        while (cb-- > 0)
+            *pb1++ = *pb2++;
+    }
+
+    return pv1Start;
+}
+
+void *memset(void *pv, int ch, KSIZE cb)
+{
+    void *pvStart = pv;
+
+    /*
+     * Pointer size pointer size.
+     */
+    if (    cb > 16
+        &&  !((KUPTR)pv & (sizeof(void *) - 1)))
+    {
+        KUPTR  *pu = pv;
+        KUPTR   u = ch | (ch << 8);
+        u |= u << 16;
+#if K_ARCH_BITS >= 64
+        u |= u << 32;
+#endif
+#if K_ARCH_BITS >= 128
+        u |= u << 64;
+#endif
+
+        while (cb >= sizeof(KUPTR))
+        {
+            cb -= sizeof(KUPTR);
+            *pu++ = u;
+        }
+    }
+
+    /*
+     * Byte by byte
+     */
+    if (cb)
+    {
+        unsigned char *pb = pv;
+        while (cb-- > 0)
+            *pb++ = ch;
+    }
+    return pvStart;
+}
+
+
+int strcmp(const char *psz1, const char *psz2)
+{
+    for (;;)
+    {
+        const char ch1 = *psz1++;
+        const char ch2 = *psz2++;
+        if (ch1 != ch2)
+            return (int)ch1 - (int)ch2;
+        if (!ch1)
+            return 0;
+    }
+}
+
+
+int strncmp(const char *psz1, const char *psz2, KSIZE cch)
+{
+    while (cch-- > 0)
+    {
+        const char ch1 = *psz1++;
+        const char ch2 = *psz2++;
+        if (ch1 != ch2)
+            return (int)ch1 - (int)ch2;
+        if (!ch1)
+            break;
+    }
+    return 0;
+}
+
+char *strchr(const char *psz, int ch)
+{
+    for (;;)
+    {
+        const char chCur = *psz;
+        if (chCur == ch)
+            return (char *)psz;
+        if (!chCur)
+            return 0;
+        psz++;
+    }
+}
+
+KSIZE strlen(const char *psz)
+{
+    const char *pszStart = psz;
+    while (*psz)
+        psz++;
+    return psz - pszStart;
+}
+
diff --git a/src/lib/kStuff/kHlp/Bare/kHlpBareAssert.c b/src/lib/kStuff/kHlp/Bare/kHlpBareAssert.c
new file mode 100644
index 0000000..138e73e
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Bare/kHlpBareAssert.c
@@ -0,0 +1,138 @@
+/* $Id: kHlpBareAssert.c 82 2016-08-22 21:01:51Z bird $ */
+/** @file
+ * kHlpBare - Assert Backend.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpAssert.h>
+#include <k/kHlpString.h>
+
+#if K_OS == K_OS_DARWIN \
+ || K_OS == K_OS_FREEBSD \
+ || K_OS == K_OS_LINUX \
+ || K_OS == K_OS_NETBSD \
+ || K_OS == K_OS_OPENBSD \
+ || K_OS == K_OS_SOLARIS
+# include <k/kHlpSys.h>
+
+#elif K_OS == K_OS_OS2
+# define INCL_BASE
+# define INCL_ERRORS
+# include <os2.h>
+
+#elif  K_OS == K_OS_WINDOWS
+# include <Windows.h>
+
+#else
+# error "port me"
+#endif
+
+
+/**
+ * Writes a assert string with unix lineendings.
+ *
+ * @param   pszMsg  The string.
+ */
+static void kHlpAssertWrite(const char *pszMsg)
+{
+#if K_OS == K_OS_DARWIN \
+ || K_OS == K_OS_FREEBSD \
+ || K_OS == K_OS_LINUX \
+ || K_OS == K_OS_NETBSD \
+ || K_OS == K_OS_OPENBSD \
+ || K_OS == K_OS_SOLARIS
+    KSIZE cchMsg = kHlpStrLen(pszMsg);
+    kHlpSys_write(2 /* stderr */, pszMsg, cchMsg);
+
+#elif K_OS == K_OS_OS2 ||  K_OS == K_OS_WINDOWS
+    /*
+     * Line by line.
+     */
+    ULONG       cbWritten;
+    const char *pszNl = kHlpStrChr(pszMsg, '\n');
+    while (pszNl)
+    {
+        cbWritten = pszNl - pszMsg;
+
+# if K_OS == K_OS_OS2
+        if (cbWritten)
+            DosWrite((HFILE)2, pszMsg, cbWritten, &cbWritten);
+        DosWrite((HFILE)2, "\r\n", 2, &cbWritten);
+# else /* K_OS == K_OS_WINDOWS */
+        if (cbWritten)
+            WriteFile((HANDLE)STD_ERROR_HANDLE, pszMsg, cbWritten, &cbWritten, NULL);
+        WriteFile((HANDLE)STD_ERROR_HANDLE, "\r\n", 2, &cbWritten, NULL);
+# endif
+
+        /* next */
+        pszMsg = pszNl + 1;
+        pszNl = kHlpStrChr(pszMsg, '\n');
+    }
+
+    /*
+     * Remaining incomplete line.
+     */
+    if (*pszMsg)
+    {
+        cbWritten = kHlpStrLen(pszMsg);
+# if K_OS == K_OS_OS2
+        DosWrite((HFILE)2, pszMsg, cbWritten, &cbWritten);
+# else /* K_OS == K_OS_WINDOWS */
+        WriteFile((HANDLE)STD_ERROR_HANDLE, pszMsg, cbWritten, &cbWritten, NULL);
+# endif
+    }
+
+#else
+# error "port me"
+#endif
+}
+
+
+KHLP_DECL(void) kHlpAssertMsg1(const char *pszExpr, const char *pszFile, unsigned iLine, const char *pszFunction)
+{
+    char szLine[16];
+
+    kHlpAssertWrite("\n!!!kLdr Assertion Failed!!!\nExpression: ");
+    kHlpAssertWrite(pszExpr);
+    kHlpAssertWrite("\nAt: ");
+    kHlpAssertWrite(pszFile);
+    kHlpAssertWrite("(");
+    kHlpAssertWrite(kHlpInt2Ascii(szLine, sizeof(szLine), iLine, 10));
+    kHlpAssertWrite(") ");
+    kHlpAssertWrite(pszFunction);
+    kHlpAssertWrite("\n");
+}
+
+
+KHLP_DECL(void) kHlpAssertMsg2(const char *pszFormat, ...)
+{
+    kHlpAssertWrite(pszFormat);
+}
+
diff --git a/src/lib/kStuff/kHlp/Bare/kHlpBareEnv.c b/src/lib/kStuff/kHlp/Bare/kHlpBareEnv.c
new file mode 100644
index 0000000..353c19e
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Bare/kHlpBareEnv.c
@@ -0,0 +1,102 @@
+/* $Id: kHlpBareEnv.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpBare - Environment Manipulation.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpEnv.h>
+#include <k/kHlpString.h>
+#include <k/kErrors.h>
+
+#if K_OS == K_OS_DARWIN
+
+#elif K_OS == K_OS_LINUX
+
+#elif K_OS == K_OS_OS2
+# define INCL_BASE
+# define INCL_ERRORS
+# include <os2.h>
+
+#elif  K_OS == K_OS_WINDOWS
+# include <Windows.h>
+
+#else
+# error "port me"
+#endif
+
+
+KHLP_DECL(int) kHlpGetEnv(const char *pszVar, char *pszVal, KSIZE cchVal)
+{
+#if K_OS == K_OS_DARWIN
+    /** @todo need to figure out where the stuff is or how it's inherited on darwin ... */
+    return KERR_ENVVAR_NOT_FOUND;
+
+#elif K_OS == K_OS_LINUX
+    /** @todo either read /proc/self/environ or figure out where in the memory the initial environment is... */
+    return KERR_ENVVAR_NOT_FOUND;
+
+#elif K_OS == K_OS_OS2
+    PSZ pszValue = NULL;
+    int rc;
+
+    *pszVal = '\0';
+    rc = DosScanEnv((PCSZ)pszVar, &pszValue);
+    if (!rc)
+    {
+        KSIZE  cch = kHlpStrLen((const char *)pszValue);
+        if (cchVal > cch)
+            kHlpMemCopy(pszVal, pszValue, cch + 1);
+        else
+            rc = KERR_BUFFER_OVERFLOW;
+    }
+    else
+        rc = KERR_ENVVAR_NOT_FOUND;
+    return rc;
+
+#elif K_OS == K_OS_WINDOWS
+    DWORD cch;
+
+    SetLastError(0);
+    cch = GetEnvironmentVariable(pszVar, pszVal, cchVal);
+    if (cch > 0 && cch < cchVal)
+        return 0;
+
+    *pszVal = '\0';
+    if (cch >= cchVal)
+        return KERR_BUFFER_OVERFLOW;
+    if (GetLastError() == ERROR_ENVVAR_NOT_FOUND)
+        return KERR_ENVVAR_NOT_FOUND;
+    return GetLastError();
+
+#else
+# error "Port me"
+#endif
+}
+
diff --git a/src/lib/kStuff/kHlp/Bare/kHlpBareHeap.c b/src/lib/kStuff/kHlp/Bare/kHlpBareHeap.c
new file mode 100644
index 0000000..d5e44b4
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Bare/kHlpBareHeap.c
@@ -0,0 +1,763 @@
+/* $Id: kHlpBareHeap.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpBare - Heap.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#define KHLPHEAP_STRICT
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpAlloc.h>
+#include <k/kHlpString.h>
+#include <k/kHlpAssert.h>
+
+#if K_OS == K_OS_OS2
+# define INCL_BASE
+# define INCL_ERRORS
+# include <os2.h>
+
+#elif  K_OS == K_OS_WINDOWS
+# include <Windows.h>
+
+#else
+# include <k/kHlpAlloc.h>
+#endif
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * A heap block.
+ */
+typedef struct KHLPHEAPBLOCK
+{
+    /** Next block in the global list. */
+    struct KHLPHEAPBLOCK   *pNext;
+    /** Previous block in the global list. */
+    struct KHLPHEAPBLOCK   *pPrev;
+    /** The size of this block including this header. */
+    KSIZE                   cb;
+    /** The flags. */
+    KSIZE                   fFlags;
+} KHLPHEAPBLOCK, *PKHLPHEAPBLOCK;
+
+/** Indicates whether the block is free (set) or allocated (clear). */
+#define KHLPHEAPBLOCK_FLAG_FREE     ((KSIZE)1)
+/** Valid flag mask. */
+#define KHLPHEAPBLOCK_FLAG_MASK     ((KSIZE)1)
+
+/** Checks if the block is freed. */
+#define KHLPHEAPBLOCK_IS_FREE(pB)       ( (pB)->fFlags & KHLPHEAPBLOCK_FLAG_FREE )
+/** Check if the block is allocated. */
+#define KHLPHEAPBLOCK_IS_ALLOCATED(pB)  !KHLPHEAPBLOCK_IS_FREE(pB)
+/** Checks if the two blocks are adjacent.
+ * Assumes pB1 < pB2. */
+#define KHLPHEAPBLOCK_IS_ADJACENT(pB1, pB2) \
+    ( ((KUPTR)(pB1) + (pB1)->cb) == (KUPTR)(pB2) )
+
+/** The block alignment. */
+#define KHLPHEAPBLOCK_ALIGNMENT     sizeof(KHLPHEAPBLOCK)
+
+/** @def KHLPHEAP_ASSERT
+ * Heap assertion. */
+/** @def KHLPHEAP_ASSERT_BLOCK
+ * Assert that a heap block is valid. */
+/** @def KHLPHEAP_ASSERT_FREE
+ * Assert that a heap free block is valid. */
+#ifdef KHLPHEAP_STRICT
+# define KHLPHEAP_ASSERT(expr)      kHlpAssert(expr)
+
+# define KHLPHEAP_ASSERT_BLOCK(pHeap, pBlock) \
+    do { \
+        KHLPHEAP_ASSERT(!((pBlock)->fFlags & ~KHLPHEAPBLOCK_FLAG_MASK)); \
+        KHLPHEAP_ASSERT(!((pBlock)->cb & (KHLPHEAPBLOCK_ALIGNMENT - 1))); \
+        KHLPHEAP_ASSERT((KUPTR)(pBlock)->pPrev < (KUPTR)(pBlock)); \
+        KHLPHEAP_ASSERT((KUPTR)(pBlock)->pNext > (KUPTR)(pBlock) || !(pBlock)->pNext); \
+    } while (0)
+
+# define KHLPHEAP_ASSERT_FREE(pHeap, pFree) \
+    do { \
+        KHLPHEAP_ASSERT_BLOCK(pHeap, &(pFree)->Core); \
+        KHLPHEAP_ASSERT((KUPTR)(pFree)->pPrev < (KUPTR)(pFree)); \
+        KHLPHEAP_ASSERT((KUPTR)(pFree)->pNext > (KUPTR)(pFree) || !(pFree)->pNext); \
+    } while (0)
+
+#else
+# define KHLPHEAP_ASSERT(expr)          do { } while (0)
+# define KHLPHEAP_ASSERT_BLOCK(pH, pB)  do { } while (0)
+# define KHLPHEAP_ASSERT_FREE(pH, pF)   do { } while (0)
+#endif
+
+
+/**
+ * A free heap block.
+ */
+typedef struct KHLPHEAPFREE
+{
+    /** The core bit which we have in common with used blocks. */
+    KHLPHEAPBLOCK           Core;
+    /** The next free block. */
+    struct KHLPHEAPFREE    *pNext;
+    /** The previous free block. */
+    struct KHLPHEAPFREE    *pPrev;
+} KHLPHEAPFREE, *PKHLPHEAPFREE;
+
+
+/**
+ * A heap segment.
+ */
+typedef struct KHLPHEAPSEG
+{
+    /** The base address of the segment. */
+    void                   *pvBase;
+    /** The length of the segment (in bytes). */
+    KSIZE                   cb;
+} KHLPHEAPSEG, *PKHLPHEAPSEG;
+
+/**
+ * Bundle of heap segments.
+ */
+typedef struct KHLPHEAPSEGS
+{
+    /** Pointer to the next segment bundle. */
+    struct KHLPHEAPSEGS    *pNext;
+    /** The number of segments used. */
+    KU32                    cSegs;
+    /** Array of chunks. */
+    KHLPHEAPSEG             aSegs[64];
+} KHLPHEAPSEGS, *PKHLPHEAPSEGS;
+
+
+/**
+ * Heap anchor block.
+ */
+typedef struct KHLPHEAPANCHOR
+{
+    /** Head of the block list. */
+    PKHLPHEAPBLOCK          pHead;
+    /** Tail of the block list. */
+    PKHLPHEAPBLOCK          pTail;
+    /** Head of the free list. */
+    PKHLPHEAPFREE           pFreeHead;
+    /** Head segment bundle.
+     * The order of this list is important, but a bit peculiar.
+     * Logically, SegsHead::pNext is the tail pointer. */
+    KHLPHEAPSEGS            SegsHead;
+} KHLPHEAPANCHOR, *PKHLPHEAPANCHOR;
+
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** The heap anchor block. */
+static KHLPHEAPANCHOR       g_Heap;
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static int      khlpHeapInit(PKHLPHEAPANCHOR pHeap);
+static void     khlpHeapDelete(PKHLPHEAPANCHOR pHeap);
+static void *   khlpHeapAlloc(PKHLPHEAPANCHOR pHeap, KSIZE cb);
+static void     khlpHeapFree(PKHLPHEAPANCHOR pHeap, void *pv);
+static KSIZE    khlpHeapBlockSize(PKHLPHEAPANCHOR pHeap, void *pv);
+static void     khlpHeapDonate(PKHLPHEAPANCHOR pHeap, void *pv, KSIZE cb);
+static int      khlpHeapSegAlloc(PKHLPHEAPSEG pSeg, KSIZE cb);
+static void     khlpHeapSegFree(PKHLPHEAPSEG pSeg);
+
+
+/**
+ * Initializes the kLdr heap.
+ *
+ * @returns 0 on success, non-zero OS specific status code on failure.
+ */
+KHLP_DECL(int) kHlpHeapInit(void)
+{
+    return khlpHeapInit(&g_Heap);
+}
+
+
+/**
+ * Terminates the kLdr heap.
+ */
+KHLP_DECL(void) kHlpHeapTerm(void)
+{
+    khlpHeapDelete(&g_Heap);
+}
+
+
+KHLP_DECL(void *) kHlpAlloc(KSIZE cb)
+{
+    return khlpHeapAlloc(&g_Heap, cb);
+}
+
+
+KHLP_DECL(void *) kHlpAllocZ(KSIZE cb)
+{
+    void *pv = khlpHeapAlloc(&g_Heap, cb);
+    if (pv)
+        kHlpMemSet(pv, 0, cb);
+    return pv;
+}
+
+
+KHLP_DECL(void *) kHlpDup(const void *pv, KSIZE cb)
+{
+    void *pvNew = khlpHeapAlloc(&g_Heap, cb);
+    if (pvNew)
+        kHlpMemCopy(pvNew, pv, cb);
+    return pvNew;
+}
+
+
+KHLP_DECL(char *) kHlpStrDup(const char *psz)
+{
+    return (char *)kHlpDup(psz, kHlpStrLen(psz) + 1);
+}
+
+
+KHLP_DECL(void *) kHlpRealloc(void *pv, KSIZE cb)
+{
+    void *pvNew;
+    if (!cb)
+    {
+        kHlpFree(pv);
+        pvNew = NULL;
+    }
+    else if (!pv)
+        pvNew = khlpHeapAlloc(&g_Heap, cb);
+    else
+    {
+        KSIZE cbToCopy = khlpHeapBlockSize(&g_Heap, pv);
+        pvNew = khlpHeapAlloc(&g_Heap, cb);
+        if (pvNew)
+        {
+            kHlpMemCopy(pvNew, pv, cb);
+            kHlpFree(pv);
+        }
+    }
+    return pvNew;
+}
+
+
+KHLP_DECL(void) kHlpFree(void *pv)
+{
+    khlpHeapFree(&g_Heap, pv);
+}
+
+
+/**
+ * Donates memory to the heap.
+ *
+ * @param   pv      The address of the memory.
+ * @param   cb      The amount of memory.
+ */
+KHLP_DECL(void) kHlpHeapDonate(void *pv, KSIZE cb)
+{
+    khlpHeapDonate(&g_Heap, pv, cb);
+}
+
+
+
+/**
+ * Initializes the heap anchor.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pHeap   The heap anchor to be initialized.
+ */
+static int khlpHeapInit(PKHLPHEAPANCHOR pHeap)
+{
+    pHeap->pHead = NULL;
+    pHeap->pTail = NULL;
+    pHeap->pFreeHead = NULL;
+    pHeap->SegsHead.pNext = NULL;
+    pHeap->SegsHead.cSegs = 0;
+    return 0;
+}
+
+
+/**
+ * Deletes a heap.
+ * This will free all resources (memory) associated with the heap.
+ *
+ * @param   pHeap   The heap to be deleted.
+ */
+static void khlpHeapDelete(PKHLPHEAPANCHOR pHeap)
+{
+    /*
+     * Free the segments, LIFO order.
+     * The head element is the last to be free, while the
+     * head.pNext is really the tail pointer - neat or what?
+     */
+    while (     pHeap->SegsHead.cSegs
+           ||   pHeap->SegsHead.pNext)
+    {
+        /* find the tail. */
+        KU32            iSeg;
+        PKHLPHEAPSEGS   pSegs = pHeap->SegsHead.pNext;
+        if (!pSegs)
+            pSegs = &pHeap->SegsHead;
+        else
+        {
+            pHeap->SegsHead.pNext = pSegs->pNext;
+            pSegs->pNext = NULL;
+        }
+
+        /* free the segments */
+        iSeg = pSegs->cSegs;
+        while (iSeg-- > 0)
+            khlpHeapSegFree(&pSegs->aSegs[iSeg]);
+        pSegs->cSegs = 0;
+    }
+
+    /* Zap the anchor. */
+    pHeap->pHead = NULL;
+    pHeap->pTail = NULL;
+    pHeap->pFreeHead = NULL;
+    pHeap->SegsHead.pNext = NULL;
+    pHeap->SegsHead.cSegs = 0;
+}
+
+
+/**
+ * Internal heap block allocator.
+ */
+static void *   kldrHeapAllocSub(PKHLPHEAPANCHOR pHeap, KSIZE cb)
+{
+    /*
+     * Find a fitting free block.
+     */
+    const KSIZE     cbReq = K_ALIGN_Z(cb + sizeof(KHLPHEAPBLOCK), KHLPHEAPBLOCK_ALIGNMENT);
+    PKHLPHEAPFREE   pCur = pHeap->pFreeHead;
+    while (pCur)
+    {
+        if (pCur->Core.cb >= cbReq)
+        {
+            if (pCur->Core.cb != cbReq)
+            {
+                /* check and see if there is a better match close by. */
+                PKHLPHEAPFREE pCur2 = pCur->pNext;
+                unsigned i = 16;
+                while (i-- > 0 && pCur2)
+                {
+                    if (pCur2->Core.cb >= cbReq)
+                    {
+                        if (pCur2->Core.cb == cbReq)
+                        {
+                            pCur = pCur2;
+                            break;
+                        }
+                        if (pCur2->Core.cb < pCur->Core.cb)
+                            pCur = pCur2;
+                    }
+
+                    /* next */
+                    KHLPHEAP_ASSERT_FREE(pHeap, pCur2);
+                    pCur2 = pCur2->pNext;
+                }
+            }
+            break;
+        }
+
+        /* next */
+        KHLPHEAP_ASSERT_FREE(pHeap, pCur);
+        pCur = pCur->pNext;
+    }
+    if (!pCur)
+        return NULL;
+    KHLPHEAP_ASSERT_FREE(pHeap, pCur);
+
+    /*
+     * Do we need to split out a block?
+     */
+    if (pCur->Core.cb - cbReq >= KHLPHEAPBLOCK_ALIGNMENT * 2)
+    {
+        PKHLPHEAPBLOCK pNew;
+
+        pCur->Core.cb -= cbReq;
+
+        pNew = (PKHLPHEAPBLOCK)((KUPTR)pCur + pCur->Core.cb);
+        pNew->fFlags = 0;
+        pNew->cb = cbReq;
+        pNew->pNext = pCur->Core.pNext;
+        if (pNew->pNext)
+            pNew->pNext->pPrev = pNew;
+        else
+            pHeap->pTail = pNew;
+        pNew->pPrev = &pCur->Core;
+        pCur->Core.pNext = pNew;
+
+        KHLPHEAP_ASSERT_FREE(pHeap, pCur);
+        KHLPHEAP_ASSERT_BLOCK(pHeap, pNew);
+        return pNew + 1;
+    }
+
+    /*
+     * No, just unlink it from the free list and return.
+     */
+    if (pCur->pNext)
+        pCur->pNext->pPrev = pCur->pPrev;
+    if (pCur->pPrev)
+        pCur->pPrev->pNext = pCur->pNext;
+    else
+        pHeap->pFreeHead = pCur->pNext;
+    pCur->Core.fFlags &= ~KHLPHEAPBLOCK_FLAG_FREE;
+
+    KHLPHEAP_ASSERT_BLOCK(pHeap, &pCur->Core);
+    return &pCur->Core + 1;
+}
+
+
+/**
+ * Allocate a heap block.
+ *
+ * @returns Pointer to the allocated heap block on success. On failure NULL is returned.
+ * @param   pHeap   The heap.
+ * @param   cb      The requested heap block size.
+ */
+static void *   khlpHeapAlloc(PKHLPHEAPANCHOR pHeap, KSIZE cb)
+{
+    void *pv;
+
+    /* adjust the requested block size. */
+    cb = K_ALIGN_Z(cb, KHLPHEAPBLOCK_ALIGNMENT);
+    if (!cb)
+        cb = KHLPHEAPBLOCK_ALIGNMENT;
+
+    /* try allocate the block. */
+    pv = kldrHeapAllocSub(pHeap, cb);
+    if (!pv)
+    {
+        /*
+         * Failed, add another segment and try again.
+         */
+        KHLPHEAPSEG Seg;
+        if (khlpHeapSegAlloc(&Seg, cb + sizeof(KHLPHEAPSEGS) + sizeof(KHLPHEAPBLOCK) * 16))
+            return NULL;
+
+        /* donate before insterting the segment, this makes sure we got heap to expand the segment list. */
+        khlpHeapDonate(pHeap, Seg.pvBase, Seg.cb);
+
+        /* insert the segment. */
+        if (pHeap->SegsHead.cSegs < sizeof(pHeap->SegsHead.aSegs) / sizeof(pHeap->SegsHead.aSegs[0]))
+            pHeap->SegsHead.aSegs[pHeap->SegsHead.cSegs++] = Seg;
+        else if (   pHeap->SegsHead.pNext
+                 && pHeap->SegsHead.pNext->cSegs < sizeof(pHeap->SegsHead.aSegs) / sizeof(pHeap->SegsHead.aSegs[0]))
+            pHeap->SegsHead.pNext->aSegs[pHeap->SegsHead.pNext->cSegs++] = Seg;
+        else
+        {
+            PKHLPHEAPSEGS pSegs = (PKHLPHEAPSEGS)kldrHeapAllocSub(pHeap, sizeof(*pSegs));
+            KHLPHEAP_ASSERT(pSegs);
+            pSegs->pNext = pHeap->SegsHead.pNext;
+            pHeap->SegsHead.pNext = pSegs;
+            pSegs->aSegs[0] = Seg;
+            pSegs->cSegs = 1;
+        }
+
+        /* retry (should succeed) */
+        pv = kldrHeapAllocSub(pHeap, cb);
+        KHLPHEAP_ASSERT(pv);
+    }
+
+    return pv;
+}
+
+
+/**
+ * Frees a heap block.
+ *
+ * @param   pHeap   The heap.
+ * @param   pv      The pointer returned by khlpHeapAlloc().
+ */
+static void     khlpHeapFree(PKHLPHEAPANCHOR pHeap, void *pv)
+{
+    PKHLPHEAPFREE pFree, pLeft, pRight;
+
+    /* ignore NULL pointers. */
+    if (!pv)
+        return;
+
+    pFree = (PKHLPHEAPFREE)((PKHLPHEAPBLOCK)pv - 1);
+    KHLPHEAP_ASSERT_BLOCK(pHeap, &pFree->Core);
+    KHLPHEAP_ASSERT(KHLPHEAPBLOCK_IS_ALLOCATED(&pFree->Core));
+
+    /*
+     * Merge or link with left node?
+     */
+    pLeft = (PKHLPHEAPFREE)pFree->Core.pPrev;
+    if (    pLeft
+        &&  KHLPHEAPBLOCK_IS_FREE(&pLeft->Core)
+        &&  KHLPHEAPBLOCK_IS_ADJACENT(&pLeft->Core, &pFree->Core)
+       )
+    {
+        /* merge left */
+        pLeft->Core.pNext = pFree->Core.pNext;
+        if (pFree->Core.pNext)
+            pFree->Core.pNext->pPrev = &pLeft->Core;
+        else
+            pHeap->pTail = &pLeft->Core;
+
+        pLeft->Core.cb += pFree->Core.cb;
+        pFree->Core.fFlags = ~0;
+        pFree = pLeft;
+    }
+    else
+    {
+        /* link left */
+        while (pLeft && !KHLPHEAPBLOCK_IS_FREE(&pLeft->Core))
+            pLeft = (PKHLPHEAPFREE)pLeft->Core.pPrev;
+        if (pLeft)
+        {
+            pFree->pPrev = pLeft;
+            pFree->pNext = pLeft->pNext;
+            if (pLeft->pNext)
+                pLeft->pNext->pPrev = pFree;
+            pLeft->pNext  = pFree;
+        }
+        else
+        {
+            pFree->pPrev = NULL;
+            pFree->pNext = pHeap->pFreeHead;
+            if (pHeap->pFreeHead)
+                pHeap->pFreeHead->pPrev = pFree;
+            pHeap->pFreeHead = pFree;
+        }
+        pFree->Core.fFlags |= KHLPHEAPBLOCK_FLAG_FREE;
+    }
+    KHLPHEAP_ASSERT_FREE(pHeap, pFree);
+
+    /*
+     * Merge right?
+     */
+    pRight = (PKHLPHEAPFREE)pFree->Core.pNext;
+    if (    pRight
+        &&  KHLPHEAPBLOCK_IS_FREE(&pRight->Core)
+        &&  KHLPHEAPBLOCK_IS_ADJACENT(&pFree->Core, pRight)
+       )
+    {
+        /* unlink pRight from the global list. */
+        pFree->Core.pNext = pRight->Core.pNext;
+        if (pRight->Core.pNext)
+            pRight->Core.pNext->pPrev = &pFree->Core;
+        else
+            pHeap->pTail = &pFree->Core;
+
+        /* unlink pRight from the free list. */
+        pFree->pNext = pRight->pNext;
+        if (pRight->pNext)
+            pRight->pNext->pPrev = pFree;
+
+        /* update size and invalidate pRight. */
+        pFree->Core.cb += pRight->Core.cb;
+        pRight->Core.fFlags = ~0;
+    }
+}
+
+
+/**
+ * Calcs the size of a heap block.
+ *
+ * @returns The block size (in bytes).
+ * @param   pHeap       The heap.
+ * @param   pv          Pointer to an in-use heap block.
+ */
+static KSIZE khlpHeapBlockSize(PKHLPHEAPANCHOR pHeap, void *pv)
+{
+    PKHLPHEAPBLOCK pBlock  = (PKHLPHEAPBLOCK)pv - 1;
+    KHLPHEAP_ASSERT_BLOCK(pHeap, pBlock);
+    KHLPHEAP_ASSERT(KHLPHEAPBLOCK_IS_ALLOCATED(pBlock));
+    return (KU8 *)pBlock->pNext - (KU8 *)pv;
+}
+
+
+/**
+ * Donates memory to the heap.
+ *
+ * The donated memory is returned to the donator when the heap is deleted.
+ *
+ * @param pHeap The heap
+ * @param pv    The pointer to the donated memory.
+ * @param cb    Size of the donated memory.
+ */
+static void     khlpHeapDonate(PKHLPHEAPANCHOR pHeap, void *pv, KSIZE cb)
+{
+    PKHLPHEAPBLOCK pBlock;
+
+    /*
+     * Don't bother with small donations.
+     */
+    if (cb < KHLPHEAPBLOCK_ALIGNMENT * 4)
+        return;
+
+    /*
+     * Align the donation on a heap block boundrary.
+     */
+    if ((KUPTR)pv & (KHLPHEAPBLOCK_ALIGNMENT - 1))
+    {
+        cb -= (KUPTR)pv & 31;
+        pv = K_ALIGN_P(pv, KHLPHEAPBLOCK_ALIGNMENT);
+    }
+    cb &= ~(KSIZE)(KHLPHEAPBLOCK_ALIGNMENT - 1);
+
+    /*
+     * Create an allocated block, link it and free it.
+     */
+    pBlock = (PKHLPHEAPBLOCK)pv;
+    pBlock->pNext = NULL;
+    pBlock->pPrev = NULL;
+    pBlock->cb = cb;
+    pBlock->fFlags = 0;
+
+    /* insert */
+    if ((KUPTR)pBlock < (KUPTR)pHeap->pHead)
+    {
+        /* head */
+        pBlock->pNext = pHeap->pHead;
+        pHeap->pHead->pPrev = pBlock;
+        pHeap->pHead = pBlock;
+    }
+    else if ((KUPTR)pBlock > (KUPTR)pHeap->pTail)
+    {
+        if (pHeap->pTail)
+        {
+            /* tail */
+            pBlock->pPrev = pHeap->pTail;
+            pHeap->pTail->pNext = pBlock;
+            pHeap->pTail = pBlock;
+        }
+        else
+        {
+            /* first */
+            pHeap->pHead = pBlock;
+            pHeap->pTail = pBlock;
+        }
+    }
+    else
+    {
+        /* in list (unlikely) */
+        PKHLPHEAPBLOCK pPrev = pHeap->pHead;
+        PKHLPHEAPBLOCK pCur = pPrev->pNext;
+        for (;;)
+        {
+            KHLPHEAP_ASSERT_BLOCK(pHeap, pCur);
+            if ((KUPTR)pCur > (KUPTR)pBlock)
+                break;
+            pPrev = pCur;
+            pCur = pCur->pNext;
+        }
+
+        pBlock->pNext = pCur;
+        pBlock->pPrev = pPrev;
+        pPrev->pNext = pBlock;
+        pCur->pPrev = pBlock;
+    }
+    KHLPHEAP_ASSERT_BLOCK(pHeap, pBlock);
+
+    /* free it */
+    khlpHeapFree(pHeap, pBlock + 1);
+}
+
+
+
+/**
+ * Allocates a new segment.
+ *
+ * @returns 0 on success, non-zero OS status code on failure.
+ * @param   pSeg    Where to put the info about the allocated segment.
+ * @param   cbMin   The minimum segment size.
+ */
+static int khlpHeapSegAlloc(PKHLPHEAPSEG pSeg, KSIZE cbMin)
+{
+#if K_OS == K_OS_OS2
+    APIRET rc;
+
+    pSeg->cb = (cbMin + 0xffff) & ~(KSIZE)0xffff;
+    pSeg->pvBase = NULL;
+    rc = DosAllocMem(&pSeg->pvBase, pSeg->cb, PAG_COMMIT | PAG_READ | PAG_WRITE | OBJ_ANY);
+    if (rc == ERROR_INVALID_PARAMETER)
+        rc = DosAllocMem(&pSeg->pvBase, pSeg->cb, PAG_COMMIT | PAG_READ | PAG_WRITE);
+    if (rc)
+    {
+        pSeg->pvBase = NULL;
+        pSeg->cb = 0;
+        return rc;
+    }
+
+#elif  K_OS == K_OS_WINDOWS
+    pSeg->cb = (cbMin + 0xffff) & ~(KSIZE)0xffff;
+    pSeg->pvBase = VirtualAlloc(NULL, pSeg->cb, MEM_COMMIT, PAGE_READWRITE);
+    if (!pSeg->pvBase)
+    {
+        pSeg->cb = 0;
+        return GetLastError();
+    }
+
+#else
+    int rc;
+
+    pSeg->cb = (cbMin + 0xffff) & ~(KSIZE)0xffff;
+    pSeg->pvBase = NULL;
+    rc = kHlpPageAlloc(&pSeg->pvBase, pSeg->cb, KPROT_READWRITE, K_FALSE);
+    if (rc)
+    {
+        pSeg->pvBase = NULL;
+        pSeg->cb = 0;
+        return rc;
+    }
+
+#endif
+
+    return 0;
+}
+
+
+/**
+ * Frees a segment.
+ *
+ * @param   pSeg    The segment to be freed.
+ */
+static void khlpHeapSegFree(PKHLPHEAPSEG pSeg)
+{
+#if K_OS == K_OS_OS2
+    APIRET rc = DosFreeMem(pSeg->pvBase);
+    KHLPHEAP_ASSERT(!rc); (void)rc;
+
+#elif  K_OS == K_OS_WINDOWS
+    BOOL fRc = VirtualFree(pSeg->pvBase, 0 /*pSeg->cb*/, MEM_RELEASE);
+    KHLPHEAP_ASSERT(fRc); (void)fRc;
+
+#else
+    int rc = kHlpPageFree(pSeg->pvBase, pSeg->cb);
+    KHLPHEAP_ASSERT(!rc); (void)rc;
+
+#endif
+}
+
diff --git a/src/lib/kStuff/kHlp/Bare/kHlpBareProcess.c b/src/lib/kStuff/kHlp/Bare/kHlpBareProcess.c
new file mode 100644
index 0000000..f7db3ff
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Bare/kHlpBareProcess.c
@@ -0,0 +1,85 @@
+/* $Id: kHlpBareProcess.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpBare - Process Management
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpProcess.h>
+#include <k/kHlpAssert.h>
+
+#if K_OS == K_OS_DARWIN \
+ || K_OS == K_OS_FREEBSD \
+ || K_OS == K_OS_LINUX \
+ || K_OS == K_OS_NETBSD \
+ || K_OS == K_OS_OPENBSD \
+ || K_OS == K_OS_SOLARIS
+# include <k/kHlpSys.h>
+
+#elif K_OS == K_OS_OS2
+# define INCL_BASE
+# define INCL_ERRORS
+# include <os2.h>
+#elif  K_OS == K_OS_WINDOWS
+# include <Windows.h>
+#else
+# error "port me"
+#endif
+
+
+/**
+ * Terminate the process.
+ *
+ * @param   rc      The exit status.
+ */
+void    kHlpExit(int rc)
+{
+    for (;;)
+    {
+#if K_OS == K_OS_DARWIN \
+ || K_OS == K_OS_FREEBSD \
+ || K_OS == K_OS_LINUX \
+ || K_OS == K_OS_NETBSD \
+ || K_OS == K_OS_OPENBSD \
+ || K_OS == K_OS_SOLARIS
+        kHlpSys_exit(rc);
+
+#elif K_OS == K_OS_OS2
+        DosExit(EXIT_PROCESS, rc);
+
+#elif  K_OS == K_OS_WINDOWS
+        TerminateProcess(GetCurrentProcess(), rc);
+
+#else
+# error "Port me"
+#endif
+        kHlpAssert(!"Impossible");
+    }
+}
+
diff --git a/src/lib/kStuff/kHlp/Bare/kHlpBareThread.c b/src/lib/kStuff/kHlp/Bare/kHlpBareThread.c
new file mode 100644
index 0000000..b484676
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Bare/kHlpBareThread.c
@@ -0,0 +1,93 @@
+/* $Id: kHlpBareThread.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpBare - Thread Manipulation.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpThread.h>
+
+#if K_OS == K_OS_DARWIN
+# include <mach/mach_time.h>
+
+#elif K_OS == K_OS_LINUX
+# include <k/kHlpSys.h>
+
+#elif K_OS == K_OS_OS2
+# define INCL_BASE
+# define INCL_ERRORS
+# include <os2.h>
+#elif  K_OS == K_OS_WINDOWS
+# include <Windows.h>
+#else
+# error "port me"
+#endif
+
+
+/**
+ * Sleep for a number of milliseconds.
+ * @param   cMillies    Number of milliseconds to sleep.
+ */
+void kHlpSleep(unsigned cMillies)
+{
+#if K_OS == K_OS_DARWIN
+    static struct mach_timebase_info   s_Info;
+    static KBOOL                s_fNanoseconds = K_UNKNOWN;
+    KU64 uNow = mach_absolute_time();
+    KU64 uDeadline;
+    KU64 uPeriod;
+
+    if (s_fNanoseconds == K_UNKNOWN)
+    {
+        if (mach_timebase_info(&s_Info))
+            s_fNanoseconds = K_TRUE; /* the easy way out */
+        else if (s_Info.denom == s_Info.numer)
+            s_fNanoseconds = K_TRUE;
+        else
+            s_fNanoseconds = K_FALSE;
+    }
+
+    uPeriod = (KU64)cMillies * 1000 * 1000;
+    if (!s_fNanoseconds)
+        uPeriod = (double)uPeriod * s_Info.denom / s_Info.numer; /* Use double to avoid 32-bit trouble. */
+    uDeadline = uNow + uPeriod;
+    mach_wait_until(uDeadline);
+
+#elif K_OS == K_OS_LINUX
+    /** @todo find the right syscall... */
+
+#elif K_OS == K_OS_OS2
+    DosSleep(cMillies);
+#elif  K_OS == K_OS_WINDOWS
+    Sleep(cMillies);
+#else
+    usleep(cMillies * 1000);
+#endif
+}
+
diff --git a/src/lib/kStuff/kHlp/Bare/kHlpSys-darwin.c b/src/lib/kStuff/kHlp/Bare/kHlpSys-darwin.c
new file mode 100644
index 0000000..b4153f2
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Bare/kHlpSys-darwin.c
@@ -0,0 +1,345 @@
+/* $Id: kHlpSys-darwin.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpBare -
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <k/kHlpSys.h>
+#include <unistd.h>
+#include <errno.h>
+#include <dlfcn.h>
+#include <sys/mman.h>
+#include <mach/mach_time.h>
+
+
+#define USE_DARWIN_SYSCALLS
+
+#if K_ARCH == K_ARCH_X86_32
+# define DARWIN_SYSCALL(name, code) \
+    asm("\
+    .text                                   \n\
+    .globl _" #name "                       \n\
+    _" #name ":                             \n\
+        mov     $ " #code ", %eax           \n\
+        call    1f                          \n\
+    1:                                      \n\
+        pop     %edx                        \n\
+        mov     %esp, %ecx                  \n\
+        sysenter                            \n\
+        jnae    2f                          \n\
+        ret                                 \n\
+    2:                                      \n\
+        neg     %eax                        \n\
+        ret                                 \n\
+    ")
+
+# define DARWIN_SYSCALL_RET64(name, code) \
+    asm("\
+    .text                                   \n\
+    .globl _" #name "                       \n\
+    _" #name ":                             \n\
+        mov     $ " #code ", %eax           \n\
+        int     $0x80                       \n\
+        jnae    2f                          \n\
+        ret                                 \n\
+    2:                                      \n\
+        neg     %eax                        \n\
+        mov     $0xffffffff, %edx           \n\
+        ret                                 \n\
+    ")
+
+# define DARWIN_SYSCALL_NOERR(name, code) \
+    asm("\
+    .text                                   \n\
+    .globl _" #name "                       \n\
+    _" #name ":                             \n\
+        mov     $ " #code ", %eax           \n\
+        call    1f                          \n\
+    1:                                      \n\
+        pop     %edx                        \n\
+        mov     %esp, %ecx                  \n\
+        sysenter                            \n\
+        ret                                 \n\
+    ")
+
+#elif K_ARCH == K_ARCH_AMD64
+# define DARWIN_SYSCALL(name, code) \
+    asm("\
+    .text                                   \n\
+    .globl _" #name "                       \n\
+    _" #name ":                             \n\
+        mov     $ " #code ", %eax           \n\
+        mov     %rcx, %r10                  \n\
+        sysenter                            \n\
+        jnae    2f                          \n\
+        ret                                 \n\
+    2:                                      \n\
+        neg     %eax                        \n\
+        movsx   %eax, %rax                  \n\
+        ret                                 \n\
+    ")
+
+# define DARWIN_SYSCALL_RET64(name, code) DARWIN_SYSCALL_RET(name, code)
+
+# define DARWIN_SYSCALL_NOERR(name, code) \
+    asm("\
+    .text                                   \n\
+    .globl _" #name "                       \n\
+    _" #name ":                             \n\
+        mov     $ " #code ", %eax           \n\
+        mov     %rcx, %r10                  \n\
+        sysenter                            \n\
+        ret                                 \n\
+    ")
+
+
+#else
+# error later...
+#endif
+
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_readlink, 0x000c003a);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_readlink, 0x0200003a);
+#else
+KSSIZE      kHlpSys_readlink(const char *pszPath, char *pszBuf, KSIZE cbBuf)
+{
+    KSSIZE cbRet = readlink(pszPath, pszBuf, cbBuf);
+    return cbRet >= 0 ? cbRet : -errno;
+}
+#endif
+
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_open, 0x000c0005);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_open, 0x02000005);
+#else
+int         kHlpSys_open(const char *filename, int flags, int mode)
+{
+    int fd = open(filename, flags, mode);
+    return fd >= 0 ? fd : -errno;
+}
+#endif
+
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_close, 0x000c0006);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_close, 0x02000006);
+#else
+int         kHlpSys_close(int fd)
+{
+   if (!close(fd))
+       return 0;
+   return -errno;
+}
+#endif
+
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL_RET64(kHlpSys_lseek, 0x000000c7);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL_RET64(kHlpSys_lseek, 0x020000c7);
+#else
+KFOFF       kHlpSys_lseek(int fd, int whench, KFOFF off)
+{
+    KFOFF offRet = lseek(fd, whench, off);
+    return offRet >= 0 ? offRet : -errno;
+}
+#endif
+
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_read, 0x000c0003);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_read, 0x02000003);
+#else
+KSSIZE      kHlpSys_read(int fd, void *pvBuf, KSIZE cbBuf)
+{
+    KSSIZE cbRead = read(fd, pvBuf, cbBuf);
+    return cbRead >= 0 ? cbRead : -errno;
+}
+#endif
+
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_write, 0x000c0004);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_write, 0x02000004);
+#else
+KSSIZE      kHlpSys_write(int fd, const void *pvBuf, KSIZE cbBuf)
+{
+    KSSIZE cbWritten = write(fd, pvBuf, cbBuf);
+    return cbWritten >= 0 ? cbWritten : -errno;
+}
+#endif
+
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_mmap, 0x020000c5);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_mmap, 0x020000c5);
+#else
+void       *kHlpSys_mmap(void *addr, KSIZE len, int prot, int flags, int fd, KI64 off)
+{
+    void *pv = mmap(addr, len, prot, flags, fd, off);
+    return pv != (void *)-1
+        ? pv
+        : errno < 256 ? (void *)(long)errno : (void *)(long)ENOMEM;
+}
+#endif
+
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_mprotect, 0x000c004a);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_mprotect, 0x0200004a);
+#else
+int         kHlpSys_mprotect(void *addr, KSIZE len, int prot)
+{
+    if (!mprotect(addr, len, prot))
+        return 0;
+    return -errno;
+}
+#endif
+
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_munmap, 0x00080049);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_munmap, 0x02000049);
+#else
+int         kHlpSys_munmap(void *addr, KSIZE len)
+{
+    if (!munmap(addr, len))
+        return 0;
+    return -errno;
+}
+#endif
+
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_exit, 0x00040001);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(kHlpSys_exit, 0x02000001);
+#else
+void        kHlpSys_exit(int rc)
+{
+    _Exit(rc);
+}
+#endif
+
+
+/*
+ * Some other stuff we'll be needing - Move to an appropriate place?
+ */
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL_NOERR(mach_task_self, 0xffffffe4);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL_NOERR(mach_task_self, 0xffffffe4);
+#endif
+
+//#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+//DARWIN_SYSCALL(semaphore_create, 0x00040001);
+//#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+//DARWIN_SYSCALL(semaphore_create, 0x02000001);
+//#endif
+#ifdef USE_DARWIN_SYSCALLS
+kern_return_t semaphore_create(task_t t, semaphore_t *ps, int p, int v)
+{
+    return 0;
+}
+#endif
+
+//#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+//DARWIN_SYSCALL(semaphore_destroy, 0x00040001);
+//#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+//DARWIN_SYSCALL(semaphore_destroy, 0x02000001);
+//#endif
+#ifdef USE_DARWIN_SYSCALLS
+kern_return_t semaphore_destroy(task_t t, semaphore_t s)
+{
+    return 0;
+}
+#endif
+
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(semaphore_wait, 0xffffffdc);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(semaphore_wait, 0xffffffdc);
+#endif
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(semaphore_signal, 0xffffffdf);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(semaphore_signal, 0xffffffdf);
+#endif
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(mach_wait_until, 0xffffffa6);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(mach_wait_until, 0xffffffa6);
+#endif
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(mach_timebase_info, 0xffffffa7);
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+DARWIN_SYSCALL(mach_timebase_info, 0xffffffa7);
+#endif
+
+#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
+asm("\n\
+.text                           \n\
+.globl _mach_absolute_time      \n\
+_mach_absolute_time:            \n\
+    mov     $0xffff1700, %edx   \n\
+    jmp     *%edx\n"); /* common page stuff. */
+#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
+#endif
+
+
+void *dlopen(const char *pszModule, int fFlags)
+{
+    return NULL;
+}
+
+
+int dlclose(void *pvMod)
+{
+
+}
+
+
+void *dlsym(void *pvMod, const char *pszSymbol)
+{
+    return NULL;
+}
+
diff --git a/src/lib/kStuff/kHlp/CRT/kHlpCRTAlloc.cpp b/src/lib/kStuff/kHlp/CRT/kHlpCRTAlloc.cpp
new file mode 100644
index 0000000..fa5f2af
--- /dev/null
+++ b/src/lib/kStuff/kHlp/CRT/kHlpCRTAlloc.cpp
@@ -0,0 +1,78 @@
+/* $Id: kHlpCRTAlloc.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpAlloc - Memory Allocation, CRT based implementation.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpAlloc.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+KHLP_DECL(void *) kHlpAlloc(KSIZE cb)
+{
+    return malloc(cb);
+}
+
+
+KHLP_DECL(void *) kHlpAllocZ(KSIZE cb)
+{
+    return calloc(1, cb);
+}
+
+
+KHLP_DECL(void *) kHlpDup(const void *pv, KSIZE cb)
+{
+    void *pvDup = kHlpAlloc(cb);
+    if (pvDup)
+        return memcpy(pvDup, pv, cb);
+    return NULL;
+}
+
+
+KHLP_DECL(char *) kHlpStrDup(const char *psz)
+{
+    size_t cb = strlen(psz) + 1;
+    return (char *)kHlpDup(psz, cb);
+}
+
+
+KHLP_DECL(void *) kHlpRealloc(void *pv, KSIZE cb)
+{
+    return realloc(pv, cb);
+}
+
+
+KHLP_DECL(void) kHlpFree(void *pv)
+{
+    if (pv)
+        free(pv);
+}
+
diff --git a/src/lib/kStuff/kHlp/CRT/kHlpCRTEnv.cpp b/src/lib/kStuff/kHlp/CRT/kHlpCRTEnv.cpp
new file mode 100644
index 0000000..108c9f1
--- /dev/null
+++ b/src/lib/kStuff/kHlp/CRT/kHlpCRTEnv.cpp
@@ -0,0 +1,56 @@
+/* $Id: kHlpCRTEnv.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpEnv - Environment Manipulation.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpEnv.h>
+#include <k/kHlpString.h>
+#include <k/kErrors.h>
+#include <stdlib.h>
+
+
+KHLP_DECL(int) kHlpGetEnv(const char *pszVar, char *pszVal, KSIZE cchVal)
+{
+    int rc = 0;
+    const char *pszValue = getenv(pszVar);
+    if (pszValue)
+    {
+        KSIZE  cch = kHlpStrLen((const char *)pszValue);
+        if (cchVal > cch)
+            kHlpMemCopy(pszVal, pszValue, cch + 1);
+        else
+            rc = KERR_BUFFER_OVERFLOW;
+    }
+    else
+        rc = KERR_ENVVAR_NOT_FOUND;
+    return rc;
+}
+
diff --git a/src/lib/kStuff/kHlp/CRT/kHlpCRTString.cpp b/src/lib/kStuff/kHlp/CRT/kHlpCRTString.cpp
new file mode 100644
index 0000000..401b378
--- /dev/null
+++ b/src/lib/kStuff/kHlp/CRT/kHlpCRTString.cpp
@@ -0,0 +1,164 @@
+/* $Id: kHlpCRTString.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - String And Memory Routines, CRT based implementation.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+#include <string.h>
+
+
+#ifndef kHlpMemChr
+void   *kHlpMemChr(const void *pv, int ch, KSIZE cb)
+{
+    return (void *)memchr(pv, ch, cb);
+}
+#endif
+
+
+#ifndef kHlpMemComp
+int     kHlpMemComp(const void *pv1, const void *pv2, KSIZE cb)
+{
+    return memcmp(pv1, pv2, cb);
+}
+#endif
+
+
+#ifndef kHlpMemCopy
+void   *kHlpMemCopy(void *pv1, const void *pv2, KSIZE cb)
+{
+    return memcpy(pv1, pv2, cb);
+}
+#endif
+
+
+#ifndef kHlpMemPCopy
+void   *kHlpMemPCopy(void *pv1, const void *pv2, KSIZE cb)
+{
+    return (KU8 *)memcpy(pv1, pv2, cb) + cb;
+}
+#endif
+
+
+#ifndef kHlpMemMove
+void   *kHlpMemMove(void *pv1, const void *pv2, KSIZE cb)
+{
+    return memmove(pv1, pv2, cb);
+}
+#endif
+
+
+#ifndef kHlpMemPMove
+void   *kHlpMemPMove(void *pv1, const void *pv2, KSIZE cb)
+{
+    return (KU8 *)memmove(pv1, pv2, cb) + cb;
+}
+#endif
+
+
+#ifndef kHlpMemSet
+void   *kHlpMemSet(void *pv1, int ch, KSIZE cb)
+{
+    return memset(pv1, ch, cb);
+}
+#endif
+
+
+#ifndef kHlpMemPSet
+void   *kHlpMemPSet(void *pv1, int ch, KSIZE cb)
+{
+    return (KU8 *)memset(pv1, ch, cb) + cb;
+}
+#endif
+
+
+#ifndef kHlpStrCat
+char   *kHlpStrCat(char *psz1, const char *psz2)
+{
+    return strcat(psz1, psz2);
+}
+#endif
+
+
+#ifndef kHlpStrNCat
+char   *kHlpStrNCat(char *psz1, const char *psz2, KSIZE cb)
+{
+    return strncat(psz1, psz2, cb);
+}
+#endif
+
+
+#ifndef kHlpStrChr
+char   *kHlpStrChr(const char *psz, int ch)
+{
+    return (char *)strchr(psz, ch);
+}
+#endif
+
+
+#ifndef kHlpStrRChr
+char   *kHlpStrRChr(const char *psz, int ch)
+{
+    return (char *)strrchr(psz, ch);
+}
+#endif
+
+
+#ifndef kHlpStrComp
+int     kHlpStrComp(const char *psz1, const char *psz2)
+{
+    return strcmp(psz1, psz2);
+}
+#endif
+
+
+#ifndef kHlpStrNComp
+int     kHlpStrNComp(const char *psz1, const char *psz2, KSIZE cch)
+{
+    return strncmp(psz1, psz2, cch);
+}
+#endif
+
+
+#ifndef kHlpStrCopy
+char   *kHlpStrCopy(char *psz1, const char *psz2)
+{
+    return strcpy(psz1, psz2);
+}
+#endif
+
+
+#ifndef kHlpStrLen
+KSIZE   kHlpStrLen(const char *psz1)
+{
+    return strlen(psz1);
+}
+#endif
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpGetEnvUZ.c b/src/lib/kStuff/kHlp/Generic/kHlpGetEnvUZ.c
new file mode 100644
index 0000000..4721af7
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpGetEnvUZ.c
@@ -0,0 +1,108 @@
+/* $Id: kHlpGetEnvUZ.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpEnv - kHlpGetEnvUZ.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpEnv.h>
+#include <k/kHlpString.h>
+
+
+/**
+ * Gets an environment variable and converts it to a KSIZE.
+ *
+ * @returns 0 and *pcb on success.
+ * @returns On failure see kHlpGetEnv.
+ * @param   pszVar  The name of the variable.
+ * @param   pcb     Where to put the value.
+ */
+KHLP_DECL(int) kHlpGetEnvUZ(const char *pszVar, KSIZE *pcb)
+{
+    KSIZE       cb;
+    unsigned    uBase;
+    char        szVal[64];
+    KSIZE       cchVal = sizeof(szVal);
+    const char *psz;
+    int         rc;
+
+    *pcb = 0;
+    rc = kHlpGetEnv(pszVar, szVal, cchVal);
+    if (rc)
+        return rc;
+
+    /* figure out the base. */
+    uBase = 10;
+    psz = szVal;
+    if (    *psz == '0'
+        &&  (psz[1] == 'x' || psz[1] == 'X'))
+    {
+        uBase = 16;
+        psz += 2;
+    }
+
+    /* convert it up to the first unknown char. */
+    cb = 0;
+    for(;;)
+    {
+        const char ch = *psz;
+        unsigned uDigit;
+        if (!ch)
+            break;
+        else if (ch >= '0' && ch <= '9')
+            uDigit = ch - '0';
+        else if (ch >= 'a' && ch <= 'z')
+            uDigit = ch - 'a' + 10;
+        else if (ch >= 'A' && ch <= 'Z')
+            uDigit = ch - 'A' + 10;
+        else
+            break;
+        if (uDigit >= uBase)
+            break;
+
+        /* add the digit */
+        cb *= uBase;
+        cb += uDigit;
+
+        psz++;
+    }
+
+    /* check for unit */
+    if (*psz == 'm' || *psz == 'M')
+        cb *= 1024*1024;
+    else if (*psz == 'k' ||*psz == 'K')
+        cb *= 1024;
+    else if (*psz == 'g' || *psz == 'G')
+        cb *= 1024*1024*1024;
+
+    *pcb = cb;
+    return 0;
+}
+
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpGetExt.c b/src/lib/kStuff/kHlp/Generic/kHlpGetExt.c
new file mode 100644
index 0000000..7e338fa
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpGetExt.c
@@ -0,0 +1,78 @@
+/* $Id: kHlpGetExt.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpPath - kHlpGetExt and kHlpGetSuff.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpPath.h>
+#include <k/kHlpString.h>
+
+
+/**
+ * Gets the filename suffix.
+ *
+ * @returns Pointer to where the suffix starts within the string pointed to by pszFilename.
+ * @returns Pointer to the terminator char if no suffix.
+ * @param   pszFilename     The filename to parse.
+ */
+KHLP_DECL(char *) kHlpGetSuff(const char *pszFilename)
+{
+    const char *pszDot = NULL;
+    pszFilename = kHlpGetFilename(pszFilename);
+    for (;;)
+    {
+        char ch = *pszFilename;
+        if (ch == '.')
+        {
+            while ((ch = *++pszFilename) == '.')
+                /* nothing */;
+            if (ch)
+                pszDot = pszFilename - 1;
+        }
+        if (!ch)
+            return (char *)(pszDot ? pszDot : pszFilename);
+        pszFilename++;
+    }
+}
+
+
+/**
+ * Gets the filename extention.
+ *
+ * @returns Pointer to where the extension starts within the string pointed to by pszFilename.
+ * @returns Pointer to the terminator char if no extension.
+ * @param   pszFilename     The filename to parse.
+ */
+KHLP_DECL(char *) kHlpGetExt(const char *pszFilename)
+{
+    char *psz = kHlpGetSuff(pszFilename);
+    return *psz ? psz + 1 : psz;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpGetFilename.c b/src/lib/kStuff/kHlp/Generic/kHlpGetFilename.c
new file mode 100644
index 0000000..c04293e
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpGetFilename.c
@@ -0,0 +1,72 @@
+/* $Id: kHlpGetFilename.c 85 2016-09-06 03:21:04Z bird $ */
+/** @file
+ * kHlpPath - kHlpGetFilename.
+ */
+
+/*
+ * Copyright (c) 2006-2016 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpPath.h>
+#include <k/kHlpString.h>
+
+
+/**
+ * Get the pointer to the filename part of the name.
+ *
+ * @returns Pointer to where the filename starts within the string pointed to by pszFilename.
+ * @returns Pointer to the terminator char if no filename.
+ * @param   pszFilename     The filename to parse.
+ */
+KHLP_DECL(char *) kHlpGetFilename(const char *pszFilename)
+{
+    const char *pszLast = pszFilename;
+    for (;;)
+    {
+        char ch = *pszFilename;
+#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS
+        if (ch == '/' || ch == '\\' || ch == ':')
+        {
+            while ((ch = *++pszFilename) == '/' || ch == '\\' || ch == ':')
+                /* nothing */;
+            pszLast = pszFilename;
+        }
+#else
+        if (ch == '/')
+        {
+            while ((ch = *++pszFilename) == '/')
+                /* betsuni */;
+            pszLast = pszFilename;
+        }
+#endif
+        if (ch)
+            pszFilename++;
+        else
+            return (char *)pszLast;
+    }
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpInt2Ascii.c b/src/lib/kStuff/kHlp/Generic/kHlpInt2Ascii.c
new file mode 100644
index 0000000..dcea005
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpInt2Ascii.c
@@ -0,0 +1,83 @@
+/* $Id: kHlpInt2Ascii.c 113 2018-07-12 11:34:27Z bird $ */
+/** @file
+ * kHlpString - kHlpInt2Ascii.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+/**
+ * Converts an signed integer to an ascii string.
+ *
+ * @returns psz.
+ * @param   psz         Pointer to the output buffer.
+ * @param   cch         The size of the output buffer.
+ * @param   lVal        The value.
+ * @param   iBase       The base to format it. (2,8,10 or 16)
+ */
+KHLP_DECL(char *) kHlpInt2Ascii(char *psz, KSIZE cch, long lVal, unsigned iBase)
+{
+    static const char s_szDigits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
+    char *pszRet = psz;
+
+    if (psz != NULL)
+    {
+        if (cch >= (lVal < 0 ? 3U : 2U))
+        {
+            /* prefix */
+            if (lVal < 0)
+            {
+                *psz++ = '-';
+                cch--;
+                lVal = -lVal;
+            }
+
+            /* the digits */
+            do
+            {
+                *psz++ = s_szDigits[lVal % iBase];
+                cch--;
+                lVal /= iBase;
+            } while (lVal && cch > 1);
+
+            /* overflow indicator */
+            if (lVal)
+                psz[-1] = '+';
+        }
+        else if (cch > 1)
+            *psz++ = '+';
+        else if (cch < 1)
+            return pszRet;
+        *psz = '\0';
+    }
+    return pszRet;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpIsFilenameOnly.c b/src/lib/kStuff/kHlp/Generic/kHlpIsFilenameOnly.c
new file mode 100644
index 0000000..1cefa61
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpIsFilenameOnly.c
@@ -0,0 +1,61 @@
+/* $Id: kHlpIsFilenameOnly.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpPath - kHlpIsFilenameOnly.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpPath.h>
+#include <k/kHlpString.h>
+
+
+/**
+ * Checks if this is only a filename or if it contains any kind
+ * of drive, directory, or server specs.
+ *
+ * @returns 1 if this is a filename only.
+ * @returns 0 of it's isn't only a filename.
+ * @param   pszFilename     The filename to parse.
+ */
+KHLP_DECL(int) kHlpIsFilenameOnly(const char *pszFilename)
+{
+    for (;;)
+    {
+        const char ch = *pszFilename++;
+#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS
+        if (ch == '/' || ch == '\\' || ch == ':')
+#else
+        if (ch == '/')
+#endif
+            return 0;
+        if (!ch)
+            return 1;
+    }
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpMemChr.c b/src/lib/kStuff/kHlp/Generic/kHlpMemChr.c
new file mode 100644
index 0000000..060916d
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpMemChr.c
@@ -0,0 +1,51 @@
+/* $Id: kHlpMemChr.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpMemChr.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(void *) kHlpMemChr(const void *pv1, int ch, KSIZE cb)
+{
+    const KU8 b = ch;
+    const KU8 *pb = (const KU8 *)pv1;
+
+    while (cb-- > 0)
+    {
+        if (*pb == b)
+            return (void *)pb;
+        pb++;
+    }
+
+    return NULL;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpMemComp.c b/src/lib/kStuff/kHlp/Generic/kHlpMemComp.c
new file mode 100644
index 0000000..54d1999
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpMemComp.c
@@ -0,0 +1,71 @@
+/* $Id: kHlpMemComp.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpMemComp.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(int) kHlpMemComp(const void *pv1, const void *pv2, KSIZE cb)
+{
+    union
+    {
+        const void *pv;
+        const KU8 *pb;
+        const KUPTR *pu;
+    } u1, u2;
+
+    u1.pv = pv1;
+    u2.pv = pv2;
+
+    if (cb >= 32)
+    {
+        while (cb > sizeof(KUPTR))
+        {
+            cb -= sizeof(KUPTR);
+            if (*u1.pu != *u2.pu)
+                return *u1.pu > *u2.pu ? 1 : -1;
+            u1.pu++;
+            u2.pu++;
+        }
+    }
+
+    while (cb-- > 0)
+    {
+        if (u1.pb != u2.pb)
+            return u1.pb > u2.pb ? 1 : -1;
+        u1.pb++;
+        u2.pb++;
+    }
+
+    return 0;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpMemCopy.c b/src/lib/kStuff/kHlp/Generic/kHlpMemCopy.c
new file mode 100644
index 0000000..8674674
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpMemCopy.c
@@ -0,0 +1,69 @@
+/* $Id: kHlpMemCopy.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpMemCopy.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(void *) kHlpMemCopy(void *pv1, const void *pv2, KSIZE cb)
+{
+    union
+    {
+        void *pv;
+        KU8 *pb;
+        KUPTR *pu;
+    } u1;
+    union
+    {
+        const void *pv;
+        const KU8 *pb;
+        const KUPTR *pu;
+    } u2;
+
+    u1.pv = pv1;
+    u2.pv = pv2;
+
+    if (cb >= 32)
+    {
+        while (cb > sizeof(KUPTR))
+        {
+            cb -= sizeof(KUPTR);
+            *u1.pu++ = *u2.pu++;
+        }
+    }
+
+    while (cb-- > 0)
+        *u1.pb++ = *u2.pb++;
+
+    return pv1;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpMemICompAscii.c b/src/lib/kStuff/kHlp/Generic/kHlpMemICompAscii.c
new file mode 100644
index 0000000..6df5767
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpMemICompAscii.c
@@ -0,0 +1,80 @@
+/* $Id: kHlpMemICompAscii.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpMemICompAscii.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(int) kHlpMemICompAscii(const void *pv1, const void *pv2, KSIZE cb)
+{
+    union
+    {
+        const void *pv;
+        const KU8 *pb;
+        const KUPTR *pu;
+    } u1, u2;
+
+    u1.pv = pv1;
+    u2.pv = pv2;
+
+    if (cb >= 32)
+    {
+        while (cb > sizeof(KUPTR))
+        {
+            if (*u1.pu != *u2.pu)
+                break; /* hand it on to the byte-by-byte routine. */
+            u1.pu++;
+            u2.pu++;
+            cb -= sizeof(KUPTR);
+        }
+    }
+
+    while (cb-- > 0)
+    {
+        if (u1.pb != u2.pb)
+        {
+            KU8 ch1 = *u1.pb;
+            KU8 ch2 = *u2.pb;
+            if (ch1 <= 'Z' && ch1 >= 'A')
+                ch1 += 'a' - 'A';
+            if (ch2 <= 'Z' && ch2 >= 'A')
+                ch2 += 'a' - 'A';
+            if (ch1 != ch2)
+                return ch1 > ch2 ? 1 : -1;
+        }
+        u1.pb++;
+        u2.pb++;
+    }
+
+    return 0;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpMemMove.c b/src/lib/kStuff/kHlp/Generic/kHlpMemMove.c
new file mode 100644
index 0000000..438a299
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpMemMove.c
@@ -0,0 +1,100 @@
+/* $Id: kHlpMemMove.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpMemMove.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(void *) kHlpMemMove(void *pv1, const void *pv2, KSIZE cb)
+{
+    union
+    {
+        void *pv;
+        KU8 *pb;
+        KUPTR *pu;
+    } u1;
+    union
+    {
+        const void *pv;
+        volatile KU8 *pb;
+        volatile KUPTR *pu;
+    } u2;
+
+    u1.pv = pv1;
+    u2.pv = pv2;
+
+    if ((KUPTR)u1.pb <= (KUPTR)u2.pb)
+    {
+        /* forward copy */
+        if (cb >= 32)
+        {
+            while (cb > sizeof(KUPTR))
+            {
+                KUPTR u = *u2.pu++;
+                *u1.pu++ = u;
+                cb -= sizeof(KUPTR);
+            }
+        }
+
+        while (cb-- > 0)
+        {
+            KU8 b = *u2.pb++;
+            *u1.pb++ = b;
+        }
+    }
+    else
+    {
+        /* backwards copy */
+        u1.pb += cb;
+        u2.pb += cb;
+
+        if (cb >= 32)
+        {
+            while (cb > sizeof(KUPTR))
+            {
+                KUPTR u = *--u2.pu;
+                *--u1.pu = u;
+                cb -= sizeof(KUPTR);
+            }
+        }
+
+        while (cb-- > 0)
+        {
+            KU8 b = *--u2.pb;
+            *--u1.pb = b;
+        }
+    }
+
+    return pv1;
+}
+
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpMemPComp.c b/src/lib/kStuff/kHlp/Generic/kHlpMemPComp.c
new file mode 100644
index 0000000..d678517
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpMemPComp.c
@@ -0,0 +1,71 @@
+/* $Id: kHlpMemPComp.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpMemPComp.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(void *) kHlpMemPComp(const void *pv1, const void *pv2, KSIZE cb)
+{
+    union
+    {
+        const void *pv;
+        const KU8 *pb;
+        const KUPTR *pu;
+    } u1, u2;
+
+    u1.pv = pv1;
+    u2.pv = pv2;
+
+    if (cb >= 32)
+    {
+        while (cb > sizeof(KUPTR))
+        {
+            if (*u1.pu != *u2.pu)
+                break; /* over to mr. byte-by-byte */
+            u1.pu++;
+            u2.pu++;
+            cb -= sizeof(KUPTR);
+        }
+    }
+
+    while (cb-- > 0)
+    {
+        if (u1.pb != u2.pb)
+            return (void *)u1.pb;
+        u1.pb++;
+        u2.pb++;
+    }
+
+    return NULL;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpMemPCopy.c b/src/lib/kStuff/kHlp/Generic/kHlpMemPCopy.c
new file mode 100644
index 0000000..0b7945e
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpMemPCopy.c
@@ -0,0 +1,69 @@
+/* $Id: kHlpMemPCopy.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpMemPCopy.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(void *) kHlpMemPCopy(void *pv1, const void *pv2, KSIZE cb)
+{
+    union
+    {
+        void *pv;
+        KU8 *pb;
+        KUPTR *pu;
+    } u1;
+    union
+    {
+        const void *pv;
+        const KU8 *pb;
+        const KUPTR *pu;
+    } u2;
+
+    u1.pv = pv1;
+    u2.pv = pv2;
+
+    if (cb >= 32)
+    {
+        while (cb > sizeof(KUPTR))
+        {
+            cb -= sizeof(KUPTR);
+            *u1.pu++ = *u2.pu++;
+        }
+    }
+
+    while (cb-- > 0)
+        *u1.pb++ = *u2.pb++;
+
+    return u1.pb;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpMemPMove.c b/src/lib/kStuff/kHlp/Generic/kHlpMemPMove.c
new file mode 100644
index 0000000..6276519
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpMemPMove.c
@@ -0,0 +1,99 @@
+/* $Id: kHlpMemPMove.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpMemPMove.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(void *) kHlpMemPMove(void *pv1, const void *pv2, KSIZE cb)
+{
+    union
+    {
+        void *pv;
+        KU8 *pb;
+        KUPTR *pu;
+    } u1;
+    union
+    {
+        const void *pv;
+        volatile KU8 *pb;
+        volatile KUPTR *pu;
+    } u2;
+
+    u1.pv = pv1;
+    u2.pv = pv2;
+
+    if ((KUPTR)u1.pb <= (KUPTR)u2.pb)
+    {
+        /* forwards copy */
+        if (cb >= 32)
+        {
+            while (cb > sizeof(KUPTR))
+            {
+                KUPTR u = *u2.pu++;
+                *u1.pu++ = u;
+                cb -= sizeof(KUPTR);
+            }
+        }
+
+        while (cb-- > 0)
+        {
+            KU8 b = *u2.pb++;
+            *u1.pb++ = b;
+        }
+
+        return u1.pb;
+    }
+
+    /* backwards copy */
+    u1.pb += cb;
+    u2.pb += cb;
+
+    if (cb >= 32)
+    {
+        while (cb > sizeof(KUPTR))
+        {
+            KUPTR u = *--u2.pu;
+            *--u1.pu = u;
+            cb -= sizeof(KUPTR);
+        }
+    }
+
+    while (cb-- > 0)
+    {
+        KU8 b = *--u2.pb;
+        *--u1.pb = b;
+    }
+
+    return (KU8 *)pv1 + cb;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpMemPSet.c b/src/lib/kStuff/kHlp/Generic/kHlpMemPSet.c
new file mode 100644
index 0000000..0a77e1a
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpMemPSet.c
@@ -0,0 +1,77 @@
+/* $Id: kHlpMemPSet.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpMemPSet.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(void *) kHlpMemPSet(void *pv1, int ch, KSIZE cb)
+{
+    union
+    {
+        void *pv;
+        KU8 *pb;
+        KUPTR *pu;
+    } u1;
+
+    u1.pv = pv1;
+
+    if (cb >= 32)
+    {
+        KUPTR u = ch & 0xff;
+#if K_ARCH_BITS > 8
+        u |= u << 8;
+#endif
+#if K_ARCH_BITS > 16
+        u |= u << 16;
+#endif
+#if K_ARCH_BITS > 32
+        u |= u << 32;
+#endif
+#if K_ARCH_BITS > 64
+        u |= u << 64;
+#endif
+
+        while (cb > sizeof(KUPTR))
+        {
+            cb -= sizeof(KUPTR);
+            *u1.pu++ = u;
+        }
+    }
+
+    while (cb-- > 0)
+        *u1.pb++ = ch;
+
+    return u1.pb;
+}
+
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpMemSet.c b/src/lib/kStuff/kHlp/Generic/kHlpMemSet.c
new file mode 100644
index 0000000..4e986ae
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpMemSet.c
@@ -0,0 +1,76 @@
+/* $Id: kHlpMemSet.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpMemSet.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(void *) kHlpMemSet(void *pv1, int ch, KSIZE cb)
+{
+    union
+    {
+        void *pv;
+        KU8 *pb;
+        KUPTR *pu;
+    } u1;
+
+    u1.pv = pv1;
+
+    if (cb >= 32)
+    {
+        KUPTR u = ch & 0xff;
+#if K_ARCH_BITS > 8
+        u |= u << 8;
+#endif
+#if K_ARCH_BITS > 16
+        u |= u << 16;
+#endif
+#if K_ARCH_BITS > 32
+        u |= u << 32;
+#endif
+#if K_ARCH_BITS > 64
+        u |= u << 64;
+#endif
+
+        while (cb > sizeof(KUPTR))
+        {
+            cb -= sizeof(KUPTR);
+            *u1.pu++ = u;
+        }
+    }
+
+    while (cb-- > 0)
+        *u1.pb++ = ch;
+
+    return pv1;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpPage.c b/src/lib/kStuff/kHlp/Generic/kHlpPage.c
new file mode 100644
index 0000000..f915f58
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpPage.c
@@ -0,0 +1,371 @@
+/* $Id: kHlpPage.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlp - Generic Page Memory Functions.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpAlloc.h>
+#include <k/kHlpAssert.h>
+
+#if K_OS == K_OS_DARWIN \
+ || K_OS == K_OS_FREEBSD \
+ || K_OS == K_OS_LINUX \
+ || K_OS == K_OS_NETBSD \
+ || K_OS == K_OS_OPENBSD \
+ || K_OS == K_OS_SOLARIS
+# include <k/kHlpSys.h>
+# include <sys/mman.h>
+
+#elif K_OS == K_OS_OS2
+# define INCL_BASE
+# define INCL_ERRORS
+# include <os2.h>
+
+#elif  K_OS == K_OS_WINDOWS
+# include <Windows.h>
+
+#else
+# error "port me"
+#endif
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+#if K_OS == K_OS_DARWIN \
+ || K_OS == K_OS_FREEBSD \
+ || K_OS == K_OS_LINUX \
+ || K_OS == K_OS_NETBSD \
+ || K_OS == K_OS_OPENBSD \
+ || K_OS == K_OS_SOLARIS
+/* nothing */
+#elif K_OS == K_OS_OS2
+/** The base of the loader stub object. <kLdr Hack>
+ * The OS/2 exe stub consists of a single data object. When allocating memory
+ * for an executable, we'll have to reuse this. */
+static void            *g_pvStub = NULL;
+/** The size of the stub object - 0 if no stub. <kLdr Hack> */
+static KSIZE            g_cbStub = 0;
+
+#elif  K_OS == K_OS_WINDOWS
+/** The system info. */
+static SYSTEM_INFO      g_SystemInfo;
+#else
+# error "port me"
+#endif
+
+
+
+#if K_OS == K_OS_DARWIN \
+ || K_OS == K_OS_FREEBSD \
+ || K_OS == K_OS_LINUX \
+ || K_OS == K_OS_NETBSD \
+ || K_OS == K_OS_OPENBSD \
+ || K_OS == K_OS_SOLARIS
+static int kHlpPageProtToNative(KPROT enmProt)
+{
+    switch (enmProt)
+    {
+        case KPROT_NOACCESS:             return PROT_NONE;
+        case KPROT_READONLY:             return PROT_READ;
+        case KPROT_READWRITE:            return PROT_READ | PROT_WRITE;
+        case KPROT_EXECUTE:              return PROT_EXEC;
+        case KPROT_EXECUTE_READ:         return PROT_EXEC | PROT_READ;
+        case KPROT_EXECUTE_READWRITE:    return PROT_EXEC | PROT_READ | PROT_WRITE;
+        default:
+            kHlpAssert(0);
+            return ~0U;
+    }
+}
+
+#elif K_OS == K_OS_OS2
+static ULONG kHlpPageProtToNative(KPROT enmProt)
+{
+    switch (enmProt)
+    {
+        case KPROT_NOACCESS:             return PAG_EXECUTE | PAG_READ | PAG_WRITE;
+        case KPROT_READONLY:             return PAG_COMMIT | PAG_READ;
+        case KPROT_READWRITE:            return PAG_COMMIT | PAG_READ | PAG_WRITE;
+        case KPROT_EXECUTE:              return PAG_COMMIT | PAG_EXECUTE;
+        case KPROT_EXECUTE_READ:         return PAG_COMMIT | PAG_EXECUTE | PAG_READ;
+        case KPROT_EXECUTE_READWRITE:    return PAG_COMMIT | PAG_EXECUTE | PAG_READ | PAG_WRITE;
+        default:
+            kHlpAssert(0);
+            return ~0U;
+    }
+}
+#elif  K_OS == K_OS_WINDOWS
+static DWORD kHlpPageProtToNative(KPROT enmProt)
+{
+    switch (enmProt)
+    {
+        case KPROT_NOACCESS:             return PAGE_NOACCESS;
+        case KPROT_READONLY:             return PAGE_READONLY;
+        case KPROT_READWRITE:            return PAGE_READWRITE;
+        case KPROT_EXECUTE:              return PAGE_EXECUTE;
+        case KPROT_EXECUTE_READ:         return PAGE_EXECUTE_READ;
+        case KPROT_EXECUTE_READWRITE:    return PAGE_EXECUTE_READWRITE;
+        default:
+            kHlpAssert(0);
+            return ~0U;
+    }
+}
+#endif
+
+
+
+/**
+ * Allocate a chunk of memory with page granularity.
+ *
+ * @returns 0 on success, non-zero OS status code on failure.
+ * @param   ppv         Where to store the address of the allocated memory.
+ *                      If fFixed is set, *ppv will on entry contain the desired address (page aligned).
+ * @param   cb          Number of bytes. Page aligned.
+ * @param   enmProt     The new protection. Copy-on-write is invalid.
+ */
+KHLP_DECL(int) kHlpPageAlloc(void **ppv, KSIZE cb, KPROT enmProt, KBOOL fFixed)
+{
+#if K_OS == K_OS_DARWIN \
+ || K_OS == K_OS_FREEBSD \
+ || K_OS == K_OS_LINUX \
+ || K_OS == K_OS_NETBSD \
+ || K_OS == K_OS_OPENBSD \
+ || K_OS == K_OS_SOLARIS
+    void *pv;
+
+    pv = kHlpSys_mmap(fFixed ? *ppv : NULL, cb, kHlpPageProtToNative(enmProt),
+                      fFixed ? MAP_FIXED | MAP_ANON: MAP_ANON, -1, 0);
+    if ((KIPTR)pv < 256)
+    {
+        kHlpAssert(0);
+        return (int)(KIPTR)pv; /** @todo convert errno to kErrors */
+    }
+    *ppv = pv;
+    return 0;
+
+#elif K_OS == K_OS_OS2
+    APIRET  rc;
+    ULONG   fFlags = kHlpPageProtToNative(enmProt);
+
+    if (!fFixed)
+    {
+        /* simple */
+        rc = DosAllocMem(ppv, cb, fFlags | OBJ_ANY);
+        if (rc == ERROR_INVALID_PARAMETER)
+            rc = DosAllocMem(ppv, cb, fFlags);
+    }
+    else
+    {
+        /* not so simple. */
+        /** @todo I've got code for this in libc somewhere. */
+        rc = -1;
+    }
+    if (!rc)
+        return 0;
+    kHlpAssert(0);
+    return rc;
+
+#elif  K_OS == K_OS_WINDOWS
+    /* (We don't have to care about the stub here, because the stub will be unmapped before we get here.) */
+    int     rc;
+    DWORD   fProt = kHlpPageProtToNative(enmProt);
+
+    if (!g_SystemInfo.dwPageSize)
+        GetSystemInfo(&g_SystemInfo);
+
+    *ppv = VirtualAlloc(fFixed ? *ppv : NULL, cb, MEM_COMMIT, fProt);
+    if (*ppv != NULL)
+        return 0;
+    rc = GetLastError();
+    kHlpAssert(0);
+    return rc;
+
+#else
+# error "port me"
+#endif
+}
+
+
+/**
+ * Change the protection of one or more pages in an allocation.
+ *
+ * (This will of course only work correctly on memory allocated by kHlpPageAlloc().)
+ *
+ * @returns 0 on success, non-zero OS status code on failure.
+ * @param   pv          First page. Page aligned.
+ * @param   cb          Number of bytes. Page aligned.
+ * @param   enmProt     The new protection. Copy-on-write is invalid.
+ */
+KHLP_DECL(int) kHlpPageProtect(void *pv, KSIZE cb, KPROT enmProt)
+{
+#if K_OS == K_OS_DARWIN \
+ || K_OS == K_OS_FREEBSD \
+ || K_OS == K_OS_LINUX \
+ || K_OS == K_OS_NETBSD \
+ || K_OS == K_OS_OPENBSD \
+ || K_OS == K_OS_SOLARIS
+    int rc;
+
+    rc = kHlpSys_mprotect(pv, cb, kHlpPageProtToNative(enmProt));
+    if (!rc)
+        return 0;
+    /** @todo convert errno -> kErrors */
+    kHlpAssert(0);
+    return rc;
+
+#elif K_OS == K_OS_OS2
+    APIRET      rc;
+    ULONG       fFlags = kHlpPageProtToNative(enmProt);
+
+    /*
+     * The non-stub pages.
+     */
+    rc = DosSetMem(pv, cb, fFlags);
+    if (rc && fFlags != PAG_DECOMMIT)
+        rc = DosSetMem(pv, cb, fFlags | PAG_COMMIT);
+    if (rc)
+    {
+        /* Try page by page. */
+        while (cb > 0)
+        {
+            rc = DosSetMem(pv, 0x1000, fFlags);
+            if (rc && fFlags != PAG_DECOMMIT)
+                rc = DosSetMem(pv, 0x1000, fFlags | PAG_COMMIT);
+            if (rc)
+                return rc;
+            pv = (void *)((KUPTR)pv + 0x1000);
+            cb -= 0x1000;
+        }
+    }
+    kHlpAssert(!rc);
+    return rc;
+
+#elif  K_OS == K_OS_WINDOWS
+    DWORD fOldProt = 0;
+    DWORD fProt = kHlpPageProtToNative(enmProt);
+    int rc = 0;
+
+    if (!VirtualProtect(pv, cb, fProt, &fOldProt))
+    {
+        rc = GetLastError();
+        kHlpAssert(0);
+    }
+    return rc;
+#else
+# error "port me"
+#endif
+}
+
+
+/**
+ * Free memory allocated by kHlpPageAlloc().
+ *
+ * @returns 0 on success, non-zero OS status code on failure.
+ * @param   pv          The address returned by kHlpPageAlloc().
+ * @param   cb          The byte count requested from kHlpPageAlloc().
+ */
+KHLP_DECL(int) kHlpPageFree(void *pv, KSIZE cb)
+{
+#if K_OS == K_OS_DARWIN \
+ || K_OS == K_OS_FREEBSD \
+ || K_OS == K_OS_LINUX \
+ || K_OS == K_OS_NETBSD \
+ || K_OS == K_OS_OPENBSD \
+ || K_OS == K_OS_SOLARIS
+    int rc;
+
+    rc = kHlpSys_munmap(pv, cb);
+    if (!rc)
+        return 0;
+    /** @todo convert errno -> kErrors */
+    return rc;
+
+#elif K_OS == K_OS_OS2
+    APIRET rc;
+
+    /*
+     * Deal with any portion overlapping with the stub.
+     */
+    KUPTR offStub = (KUPTR)pv - (KUPTR)g_pvStub;
+    if (offStub < g_cbStub)
+    {
+        /* decommit the pages in the stub. */
+        KSIZE cbStub = K_MIN(g_cbStub - offStub, cb);
+        rc = DosSetMem(pv, cbStub, PAG_DECOMMIT);
+        if (rc)
+        {
+            /* Page by page, ignoring errors after the first success. */
+            while (cbStub > 0)
+            {
+                if (!DosSetMem(pv, 0x1000, PAG_DECOMMIT))
+                    rc = 0;
+                pv = (void *)((KUPTR)pv + 0x1000);
+                cbStub -= 0x1000;
+                cb -= 0x1000;
+            }
+            if (rc)
+            {
+                kHlpAssert(!rc);
+                return rc;
+            }
+        }
+        else
+        {
+            cb -= cbStub;
+            if (!cb)
+                return 0;
+            pv = (void *)((KUPTR)pv + cbStub);
+        }
+    }
+
+    /*
+     * Free the object.
+     */
+    rc = DosFreeMem(pv);
+    kHlpAssert(!rc);
+    return rc;
+
+#elif  K_OS == K_OS_WINDOWS
+    /*
+     * Free the object.
+     */
+    int rc = 0;
+    if (!VirtualFree(pv, 0 /*cb*/, MEM_RELEASE))
+    {
+        rc = GetLastError();
+        kHlpAssert(0);
+    }
+    return rc;
+
+#else
+# error "port me"
+#endif
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrCat.c b/src/lib/kStuff/kHlp/Generic/kHlpStrCat.c
new file mode 100644
index 0000000..82900ea
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrCat.c
@@ -0,0 +1,52 @@
+/* $Id: kHlpStrCat.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrCat.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(char *) kHlpStrCat(char *psz1, const char *psz2)
+{
+    char ch;
+    char *pszDst = psz1;
+
+    while (*pszDst != '\0')
+        pszDst++;
+    do
+    {
+        ch = *psz2++;
+        *pszDst++ = ch;
+    } while (ch != '\0');
+
+    return psz1;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrChr.c b/src/lib/kStuff/kHlp/Generic/kHlpStrChr.c
new file mode 100644
index 0000000..acff27c
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrChr.c
@@ -0,0 +1,56 @@
+/* $Id: kHlpStrChr.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrChr.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(char *) kHlpStrChr(const char *psz, int ch)
+{
+    if (!ch)
+    {
+        while (*psz)
+            psz++;
+        return (char *)psz;
+    }
+
+    for (;;)
+    {
+        int chCur = *psz;
+        if (chCur == ch)
+            return (char *)psz;
+        if (!chCur)
+            return NULL;
+        psz++;
+    }
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrComp.c b/src/lib/kStuff/kHlp/Generic/kHlpStrComp.c
new file mode 100644
index 0000000..12bdaaf
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrComp.c
@@ -0,0 +1,52 @@
+/* $Id: kHlpStrComp.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrComp.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(int) kHlpStrComp(const char *psz1, const char *psz2)
+{
+    for (;;)
+    {
+        char ch1 = *psz1;
+        char ch2 = *psz2;
+        if (ch1 != ch2)
+            return ch1 > ch2 ? 1 : -1;
+        if (!ch1)
+            return 0;
+        psz1++;
+        psz2++;
+    }
+}
+
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrCopy.c b/src/lib/kStuff/kHlp/Generic/kHlpStrCopy.c
new file mode 100644
index 0000000..86efbab
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrCopy.c
@@ -0,0 +1,46 @@
+/* $Id: kHlpStrCopy.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrCopy.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(char *) kHlpStrCopy(char *pszDst, const char *pszSrc)
+{
+    char ch;
+    char *psz = pszDst;
+    do
+        *psz++ = ch = *pszSrc;
+    while (ch);
+    return pszDst;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrICompAscii.c b/src/lib/kStuff/kHlp/Generic/kHlpStrICompAscii.c
new file mode 100644
index 0000000..446f61f
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrICompAscii.c
@@ -0,0 +1,58 @@
+/* $Id: kHlpStrICompAscii.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrICompAscii.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(int) kHlpStrICompAscii(const char *psz1, const char *psz2)
+{
+    for (;;)
+    {
+        char ch1 = *psz1;
+        char ch2 = *psz2;
+        if (ch1 != ch2)
+        {
+            if (ch1 <= 'Z' && ch1 >= 'A')
+                ch1 += 'a' - 'A';
+            if (ch2 <= 'Z' && ch2 >= 'A')
+                ch2 += 'a' - 'A';
+            if (ch1 != ch2)
+                return ch1 > ch2 ? 1 : -1;
+        }
+        if (!ch1)
+            return 0;
+        psz1++;
+        psz2++;
+    }
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrIPCompAscii.c b/src/lib/kStuff/kHlp/Generic/kHlpStrIPCompAscii.c
new file mode 100644
index 0000000..40d28f7
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrIPCompAscii.c
@@ -0,0 +1,59 @@
+/* $Id: kHlpStrIPCompAscii.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrIPCompAscii.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(char *) kHlpStrIPCompAscii(const char *psz1, const char *psz2)
+{
+    for (;;)
+    {
+        char ch1 = *psz1;
+        char ch2 = *psz2;
+        if (ch1 != ch2)
+        {
+            if (ch1 <= 'Z' && ch1 >= 'A')
+                ch1 += 'a' - 'A';
+            if (ch2 <= 'Z' && ch2 >= 'A')
+                ch2 += 'a' - 'A';
+            if (ch1 != ch2)
+                return (char *)psz1;
+        }
+        if (!ch1)
+            return (char *)psz1;
+        psz1++;
+        psz2++;
+    }
+}
+
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrLen.c b/src/lib/kStuff/kHlp/Generic/kHlpStrLen.c
new file mode 100644
index 0000000..714c703
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrLen.c
@@ -0,0 +1,44 @@
+/* $Id: kHlpStrLen.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrLen.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(KSIZE) kHlpStrLen(const char *psz)
+{
+    const char *pszEnd = psz;
+    while (*pszEnd)
+        pszEnd++;
+    return pszEnd - psz;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrNCat.c b/src/lib/kStuff/kHlp/Generic/kHlpStrNCat.c
new file mode 100644
index 0000000..a311cb0
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrNCat.c
@@ -0,0 +1,55 @@
+/* $Id: kHlpStrNCat.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrNCat.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(char *) kHlpStrNCat(char *psz1, const char *psz2, KSIZE cb)
+{
+    char ch;
+    char *pszDst = psz1;
+
+    while (*pszDst != '\0')
+        pszDst++;
+    while (cb-- > 0)
+    {
+        ch = *psz2++;
+        if (!ch)
+            break;
+        *pszDst++ = ch;
+    }
+    *pszDst = '\0';
+
+    return psz1;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrNComp.c b/src/lib/kStuff/kHlp/Generic/kHlpStrNComp.c
new file mode 100644
index 0000000..f46aa8a
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrNComp.c
@@ -0,0 +1,52 @@
+/* $Id: kHlpStrNComp.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrNComp.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(int) kHlpStrNComp(const char *psz1, const char *psz2, KSIZE cb)
+{
+    while (cb-- > 0)
+    {
+        char ch1 = *psz1;
+        char ch2 = *psz2;
+        if (ch1 != ch2)
+            return ch1 > ch2 ? 1 : -1;
+        if (!ch1)
+            break;
+        psz1++;
+        psz2++;
+    }
+    return 0;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrNICompAscii.c b/src/lib/kStuff/kHlp/Generic/kHlpStrNICompAscii.c
new file mode 100644
index 0000000..d9670a0
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrNICompAscii.c
@@ -0,0 +1,59 @@
+/* $Id: kHlpStrNICompAscii.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrNICompAscii.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(int) kHlpStrNICompAscii(const char *psz1, const char *psz2, KSIZE cb)
+{
+    while (cb-- > 0)
+    {
+        char ch1 = *psz1;
+        char ch2 = *psz2;
+        if (ch1 != ch2)
+        {
+            if (ch1 <= 'Z' && ch1 >= 'A')
+                ch1 += 'a' - 'A';
+            if (ch2 <= 'Z' && ch2 >= 'A')
+                ch2 += 'a' - 'A';
+            if (ch1 != ch2)
+                return ch1 > ch2 ? 1 : -1;
+        }
+        if (!ch1)
+            break;
+        psz1++;
+        psz2++;
+    }
+    return 0;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrNIPCompAscii.c b/src/lib/kStuff/kHlp/Generic/kHlpStrNIPCompAscii.c
new file mode 100644
index 0000000..976f197
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrNIPCompAscii.c
@@ -0,0 +1,61 @@
+/* $Id: kHlpStrNIPCompAscii.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrNIPCompAscii.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(char *) kHlpStrNIPCompAscii(const char *psz1, const char *psz2, KSIZE cb)
+{
+    while (cb-- > 0)
+    {
+        char ch1 = *psz1;
+        char ch2 = *psz2;
+        if (ch1 != ch2)
+        {
+            if (ch1 <= 'Z' && ch1 >= 'A')
+                ch1 += 'a' - 'A';
+            if (ch2 <= 'Z' && ch2 >= 'A')
+                ch2 += 'a' - 'A';
+            if (ch1 != ch2)
+                return (char *)psz1;
+        }
+        if (!ch1)
+            break;
+        psz1++;
+        psz2++;
+    }
+    return NULL;
+}
+
+
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrNLen.c b/src/lib/kStuff/kHlp/Generic/kHlpStrNLen.c
new file mode 100644
index 0000000..bf1db6c
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrNLen.c
@@ -0,0 +1,44 @@
+/* $Id: kHlpStrNLen.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrNLen.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(KSIZE) kHlpStrNLen(const char *psz, KSIZE cchMax)
+{
+    const char *pszEnd = psz;
+    while (cchMax-- > 0 && *pszEnd)
+        pszEnd++;
+    return pszEnd - psz;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrNPCat.c b/src/lib/kStuff/kHlp/Generic/kHlpStrNPCat.c
new file mode 100644
index 0000000..cec0921
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrNPCat.c
@@ -0,0 +1,54 @@
+/* $Id: kHlpStrNPCat.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrNPCat.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(char *) kHlpStrNPCat(char *pszDst, const char *pszSrc, KSIZE cb)
+{
+    char ch;
+
+    while (*pszDst != '\0')
+        pszDst++;
+    while (cb-- > 0)
+    {
+        ch = *pszSrc++;
+        if (!ch)
+            break;
+        *pszDst++ = ch;
+    }
+    *pszDst = '\0';
+
+    return pszDst;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrNPComp.c b/src/lib/kStuff/kHlp/Generic/kHlpStrNPComp.c
new file mode 100644
index 0000000..bafd05e
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrNPComp.c
@@ -0,0 +1,53 @@
+/* $Id: kHlpStrNPComp.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrNPComp.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(char *) kHlpStrNPComp(const char *psz1, const char *psz2, KSIZE cb)
+{
+    while (cb-- > 0)
+    {
+        char ch1 = *psz1;
+        char ch2 = *psz2;
+        if (ch1 != ch2)
+            return (char *)psz1;
+        if (!ch1)
+            break;
+        psz1++;
+        psz2++;
+    }
+    return NULL;
+}
+
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrPCat.c b/src/lib/kStuff/kHlp/Generic/kHlpStrPCat.c
new file mode 100644
index 0000000..fc80f9c
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrPCat.c
@@ -0,0 +1,51 @@
+/* $Id: kHlpStrPCat.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrPCat.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(char *) kHlpStrPCat(char *pszDst, const char *psz2)
+{
+    char ch;
+
+    while (*pszDst != '\0')
+        pszDst++;
+    do
+    {
+        ch = *psz2++;
+        *pszDst++ = ch;
+    } while (ch != '\0');
+
+    return pszDst - 1;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrPComp.c b/src/lib/kStuff/kHlp/Generic/kHlpStrPComp.c
new file mode 100644
index 0000000..3572427
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrPComp.c
@@ -0,0 +1,53 @@
+/* $Id: kHlpStrPComp.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrPComp.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(char *) kHlpStrPComp(const char *psz1, const char *psz2)
+{
+    for (;;)
+    {
+        char ch1 = *psz1;
+        char ch2 = *psz2;
+        if (ch1 != ch2)
+            return (char *)psz1;
+        if (!ch1)
+            return NULL;
+        psz1++;
+        psz2++;
+    }
+}
+
+
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrPCopy.c b/src/lib/kStuff/kHlp/Generic/kHlpStrPCopy.c
new file mode 100644
index 0000000..821258c
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrPCopy.c
@@ -0,0 +1,45 @@
+/* $Id: kHlpStrPCopy.c 83 2016-08-30 18:38:12Z bird $ */
+/** @file
+ * kHlpString - kHlpStrPCopy.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(char *) kHlpStrPCopy(char *pszDst, const char *pszSrc)
+{
+    char ch;
+    do
+        *pszDst++ = ch = *pszSrc++;
+    while (ch);
+    return pszDst - 1;
+}
+
diff --git a/src/lib/kStuff/kHlp/Generic/kHlpStrRChr.c b/src/lib/kStuff/kHlp/Generic/kHlpStrRChr.c
new file mode 100644
index 0000000..a712840
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Generic/kHlpStrRChr.c
@@ -0,0 +1,59 @@
+/* $Id: kHlpStrRChr.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kHlpString - kHlpStrRChr.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kHlpString.h>
+
+
+KHLP_DECL(char *) kHlpStrRChr(const char *psz, int ch)
+{
+    char *pszLast;
+
+    if (!ch)
+    {
+        while (*psz)
+            psz++;
+        return (char *)psz;
+    }
+
+    pszLast = NULL;
+    for (;;)
+    {
+        int chCur = *psz;
+        if (chCur == ch)
+            pszLast = (char *)psz;
+        else if (!chCur)
+            return pszLast;
+        psz++;
+    }
+}
+
diff --git a/src/lib/kStuff/kHlp/Makefile.kmk b/src/lib/kStuff/kHlp/Makefile.kmk
new file mode 100644
index 0000000..3ba9882
--- /dev/null
+++ b/src/lib/kStuff/kHlp/Makefile.kmk
@@ -0,0 +1,126 @@
+# $Id: Makefile.kmk 29 2009-07-01 20:30:29Z bird $
+## @file
+# kHlp - The Helper API, sub-makefile.
+#
+
+#
+# Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+DEPTH ?= ..
+SUB_DEPTH = ..
+include $(PATH_KBUILD)/subheader.kmk
+
+#
+# kHlpBaseStatic
+#
+LIBRARIES += kHlpBareStatic
+kHlpBareStatic_TEMPLATE = kStuffLIB
+kHlpBareStatic_SOURCES = \
+	Generic/kHlpMemChr.c \
+	Generic/kHlpMemComp.c \
+	Generic/kHlpMemPComp.c \
+	Generic/kHlpMemICompAscii.c \
+	Generic/kHlpMemCopy.c \
+	Generic/kHlpMemPCopy.c \
+	Generic/kHlpMemMove.c \
+	Generic/kHlpMemPMove.c \
+	Generic/kHlpMemSet.c \
+	Generic/kHlpMemPSet.c \
+	Generic/kHlpStrCat.c \
+	Generic/kHlpStrPCat.c \
+	Generic/kHlpStrNCat.c \
+	Generic/kHlpStrNPCat.c \
+	Generic/kHlpStrChr.c \
+	Generic/kHlpStrRChr.c \
+	Generic/kHlpStrComp.c \
+	Generic/kHlpStrPComp.c \
+	Generic/kHlpStrNComp.c \
+	Generic/kHlpStrNPComp.c \
+	Generic/kHlpStrICompAscii.c \
+	Generic/kHlpStrIPCompAscii.c \
+	Generic/kHlpStrNICompAscii.c \
+	Generic/kHlpStrNIPCompAscii.c \
+	Generic/kHlpStrCopy.c \
+	Generic/kHlpStrPCopy.c \
+	Generic/kHlpStrLen.c \
+	Generic/kHlpStrNLen.c \
+	Generic/kHlpInt2Ascii.c \
+	\
+	Generic/kHlpGetEnvUZ.c \
+	\
+	Generic/kHlpGetExt.c \
+	Generic/kHlpGetFilename.c \
+	Generic/kHlpIsFilenameOnly.c \
+	\
+	Generic/kHlpPage.c \
+	\
+	Bare/kHlpBareAssert.c \
+	Bare/kHlpBareHeap.c \
+	Bare/kHlpBareEnv.c \
+	Bare/kHlpBareProcess.c \
+	Bare/kHlpBareThread.c \
+
+kHlpBareStatic_SOURCES.darwin = \
+	Bare/kHlpSys-darwin.c
+
+#
+# kCrtStatic
+#
+LIBRARIES += kHlpCRTStatic
+kHlpCRTStatic_TEMPLATE = kStuffLIB
+kHlpCRTStatic_SOURCES = \
+	Generic/kHlpMemPComp.c \
+	Generic/kHlpMemICompAscii.c \
+	Generic/kHlpStrPCat.c \
+	Generic/kHlpStrNPCat.c \
+	Generic/kHlpStrPComp.c \
+	Generic/kHlpStrNPComp.c \
+	Generic/kHlpStrICompAscii.c \
+	Generic/kHlpStrIPCompAscii.c \
+	Generic/kHlpStrNICompAscii.c \
+	Generic/kHlpStrNIPCompAscii.c \
+	Generic/kHlpStrPCopy.c \
+	Generic/kHlpStrNLen.c \
+	Generic/kHlpInt2Ascii.c \
+	\
+	Generic/kHlpGetEnvUZ.c \
+	\
+	Generic/kHlpGetExt.c \
+	Generic/kHlpGetFilename.c \
+	Generic/kHlpIsFilenameOnly.c \
+	\
+	Generic/kHlpPage.c \
+	\
+	CRT/kHlpCRTAlloc.cpp \
+	CRT/kHlpCRTEnv.cpp \
+	CRT/kHlpCRTString.cpp \
+
+kHlpCRTStatic_SOURCES.darwin = \
+	Bare/kHlpSys-darwin.c
+
+
+# Generate the rules
+include $(PATH_KBUILD)/subfooter.kmk
+
diff --git a/src/lib/kStuff/kLdr/Doxyfile b/src/lib/kStuff/kLdr/Doxyfile
new file mode 100644
index 0000000..d54c1f5
--- /dev/null
+++ b/src/lib/kStuff/kLdr/Doxyfile
@@ -0,0 +1,1252 @@
+# Doxyfile 1.5.0
+
+# This file describes the settings to be used by the documentation system
+# doxygen (www.doxygen.org) for a project
+#
+# All text after a hash (#) is considered a comment and will be ignored
+# The format is:
+#       TAG = value [value, ...]
+# For lists items can also be appended using:
+#       TAG += value [value, ...]
+# Values that contain spaces should be placed between quotes (" ")
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+
+# The PROJECT_NAME tag is a single word (or a sequence of words surrounded
+# by quotes) that should identify the project.
+
+PROJECT_NAME           = kLdr
+
+# The PROJECT_NUMBER tag can be used to enter a project or revision number.
+# This could be handy for archiving the generated documentation or
+# if some version control system is used.
+
+PROJECT_NUMBER         =
+
+# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
+# base path where the generated documentation will be put.
+# If a relative path is entered, it will be relative to the location
+# where doxygen was started. If left blank the current directory will be used.
+
+OUTPUT_DIRECTORY       = docs
+
+# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create
+# 4096 sub-directories (in 2 levels) under the output directory of each output
+# format and will distribute the generated files over these directories.
+# Enabling this option can be useful when feeding doxygen a huge amount of
+# source files, where putting all generated files in the same directory would
+# otherwise cause performance problems for the file system.
+
+CREATE_SUBDIRS         = NO
+
+# The OUTPUT_LANGUAGE tag is used to specify the language in which all
+# documentation generated by doxygen is written. Doxygen will use this
+# information to generate all constant output in the proper language.
+# The default language is English, other supported languages are:
+# Afrikaans, Arabic, Brazilian, Catalan, Chinese, Chinese-Traditional,
+# Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hungarian,
+# Italian, Japanese, Japanese-en (Japanese with English messages), Korean,
+# Korean-en, Lithuanian, Norwegian, Polish, Portuguese, Romanian, Russian,
+# Serbian, Slovak, Slovene, Spanish, Swedish, and Ukrainian.
+
+OUTPUT_LANGUAGE        = English
+
+# This tag can be used to specify the encoding used in the generated output.
+# The encoding is not always determined by the language that is chosen,
+# but also whether or not the output is meant for Windows or non-Windows users.
+# In case there is a difference, setting the USE_WINDOWS_ENCODING tag to YES
+# forces the Windows encoding (this is the default for the Windows binary),
+# whereas setting the tag to NO uses a Unix-style encoding (the default for
+# all platforms other than Windows).
+
+USE_WINDOWS_ENCODING   = YES
+
+# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will
+# include brief member descriptions after the members that are listed in
+# the file and class documentation (similar to JavaDoc).
+# Set to NO to disable this.
+
+BRIEF_MEMBER_DESC      = YES
+
+# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend
+# the brief description of a member or function before the detailed description.
+# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the
+# brief descriptions will be completely suppressed.
+
+REPEAT_BRIEF           = YES
+
+# This tag implements a quasi-intelligent brief description abbreviator
+# that is used to form the text in various listings. Each string
+# in this list, if found as the leading text of the brief description, will be
+# stripped from the text and the result after processing the whole list, is
+# used as the annotated text. Otherwise, the brief description is used as-is.
+# If left blank, the following values are used ("$name" is automatically
+# replaced with the name of the entity): "The $name class" "The $name widget"
+# "The $name file" "is" "provides" "specifies" "contains"
+# "represents" "a" "an" "the"
+
+ABBREVIATE_BRIEF       =
+
+# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then
+# Doxygen will generate a detailed section even if there is only a brief
+# description.
+
+ALWAYS_DETAILED_SEC    = NO
+
+# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all
+# inherited members of a class in the documentation of that class as if those
+# members were ordinary class members. Constructors, destructors and assignment
+# operators of the base classes will not be shown.
+
+INLINE_INHERITED_MEMB  = NO
+
+# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full
+# path before files name in the file list and in the header files. If set
+# to NO the shortest path that makes the file name unique will be used.
+
+FULL_PATH_NAMES        = NO
+
+# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag
+# can be used to strip a user-defined part of the path. Stripping is
+# only done if one of the specified strings matches the left-hand part of
+# the path. The tag can be used to show relative paths in the file list.
+# If left blank the directory from which doxygen is run is used as the
+# path to strip.
+
+STRIP_FROM_PATH        =
+
+# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of
+# the path mentioned in the documentation of a class, which tells
+# the reader which header file to include in order to use a class.
+# If left blank only the name of the header file containing the class
+# definition is used. Otherwise one should specify the include paths that
+# are normally passed to the compiler using the -I flag.
+
+STRIP_FROM_INC_PATH    =
+
+# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter
+# (but less readable) file names. This can be useful is your file systems
+# doesn't support long names like on DOS, Mac, or CD-ROM.
+
+SHORT_NAMES            = NO
+
+# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen
+# will interpret the first line (until the first dot) of a JavaDoc-style
+# comment as the brief description. If set to NO, the JavaDoc
+# comments will behave just like the Qt-style comments (thus requiring an
+# explicit @brief command for a brief description.
+
+JAVADOC_AUTOBRIEF      = YES
+
+# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen
+# treat a multi-line C++ special comment block (i.e. a block of //! or ///
+# comments) as a brief description. This used to be the default behaviour.
+# The new default is to treat a multi-line C++ comment block as a detailed
+# description. Set this tag to YES if you prefer the old behaviour instead.
+
+MULTILINE_CPP_IS_BRIEF = NO
+
+# If the DETAILS_AT_TOP tag is set to YES then Doxygen
+# will output the detailed description near the top, like JavaDoc.
+# If set to NO, the detailed description appears after the member
+# documentation.
+
+DETAILS_AT_TOP         = NO
+
+# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented
+# member inherits the documentation from any documented member that it
+# re-implements.
+
+INHERIT_DOCS           = YES
+
+# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce
+# a new page for each member. If set to NO, the documentation of a member will
+# be part of the file/class/namespace that contains it.
+
+SEPARATE_MEMBER_PAGES  = NO
+
+# The TAB_SIZE tag can be used to set the number of spaces in a tab.
+# Doxygen uses this value to replace tabs by spaces in code fragments.
+
+TAB_SIZE               = 4
+
+# This tag can be used to specify a number of aliases that acts
+# as commands in the documentation. An alias has the form "name=value".
+# For example adding "sideeffect=\par Side Effects:\n" will allow you to
+# put the command \sideeffect (or @sideeffect) in the documentation, which
+# will result in a user-defined paragraph with heading "Side Effects:".
+# You can put \n's in the value part of an alias to insert newlines.
+
+ALIASES                =
+
+# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C
+# sources only. Doxygen will then generate output that is more tailored for C.
+# For instance, some of the names that are used will be different. The list
+# of all members will be omitted, etc.
+
+OPTIMIZE_OUTPUT_FOR_C  = YES
+
+# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java
+# sources only. Doxygen will then generate output that is more tailored for Java.
+# For instance, namespaces will be presented as packages, qualified scopes
+# will look different, etc.
+
+OPTIMIZE_OUTPUT_JAVA   = NO
+
+# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want to
+# include (a tag file for) the STL sources as input, then you should
+# set this tag to YES in order to let doxygen match functions declarations and
+# definitions whose arguments contain STL classes (e.g. func(std::string); v.s.
+# func(std::string) {}). This also make the inheritance and collaboration
+# diagrams that involve STL classes more complete and accurate.
+
+BUILTIN_STL_SUPPORT    = NO
+
+# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC
+# tag is set to YES, then doxygen will reuse the documentation of the first
+# member in the group (if any) for the other members of the group. By default
+# all members of a group must be documented explicitly.
+
+DISTRIBUTE_GROUP_DOC   = NO
+
+# Set the SUBGROUPING tag to YES (the default) to allow class member groups of
+# the same type (for instance a group of public functions) to be put as a
+# subgroup of that type (e.g. under the Public Functions section). Set it to
+# NO to prevent subgrouping. Alternatively, this can be done per class using
+# the \nosubgrouping command.
+
+SUBGROUPING            = YES
+
+#---------------------------------------------------------------------------
+# Build related configuration options
+#---------------------------------------------------------------------------
+
+# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in
+# documentation are documented, even if no documentation was available.
+# Private class members and static file members will be hidden unless
+# the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES
+
+EXTRACT_ALL            = NO
+
+# If the EXTRACT_PRIVATE tag is set to YES all private members of a class
+# will be included in the documentation.
+
+EXTRACT_PRIVATE        = NO
+
+# If the EXTRACT_STATIC tag is set to YES all static members of a file
+# will be included in the documentation.
+
+EXTRACT_STATIC         = NO
+
+# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs)
+# defined locally in source files will be included in the documentation.
+# If set to NO only classes defined in header files are included.
+
+EXTRACT_LOCAL_CLASSES  = YES
+
+# This flag is only useful for Objective-C code. When set to YES local
+# methods, which are defined in the implementation section but not in
+# the interface are included in the documentation.
+# If set to NO (the default) only methods in the interface are included.
+
+EXTRACT_LOCAL_METHODS  = NO
+
+# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all
+# undocumented members of documented classes, files or namespaces.
+# If set to NO (the default) these members will be included in the
+# various overviews, but no documentation section is generated.
+# This option has no effect if EXTRACT_ALL is enabled.
+
+HIDE_UNDOC_MEMBERS     = NO
+
+# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all
+# undocumented classes that are normally visible in the class hierarchy.
+# If set to NO (the default) these classes will be included in the various
+# overviews. This option has no effect if EXTRACT_ALL is enabled.
+
+HIDE_UNDOC_CLASSES     = NO
+
+# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all
+# friend (class|struct|union) declarations.
+# If set to NO (the default) these declarations will be included in the
+# documentation.
+
+HIDE_FRIEND_COMPOUNDS  = NO
+
+# If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any
+# documentation blocks found inside the body of a function.
+# If set to NO (the default) these blocks will be appended to the
+# function's detailed documentation block.
+
+HIDE_IN_BODY_DOCS      = NO
+
+# The INTERNAL_DOCS tag determines if documentation
+# that is typed after a \internal command is included. If the tag is set
+# to NO (the default) then the documentation will be excluded.
+# Set it to YES to include the internal documentation.
+
+INTERNAL_DOCS          = YES
+
+# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate
+# file names in lower-case letters. If set to YES upper-case letters are also
+# allowed. This is useful if you have classes or files whose names only differ
+# in case and if your file system supports case sensitive file names. Windows
+# and Mac users are advised to set this option to NO.
+
+CASE_SENSE_NAMES       = NO
+
+# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen
+# will show members with their full class and namespace scopes in the
+# documentation. If set to YES the scope will be hidden.
+
+HIDE_SCOPE_NAMES       = NO
+
+# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen
+# will put a list of the files that are included by a file in the documentation
+# of that file.
+
+SHOW_INCLUDE_FILES     = YES
+
+# If the INLINE_INFO tag is set to YES (the default) then a tag [inline]
+# is inserted in the documentation for inline members.
+
+INLINE_INFO            = YES
+
+# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen
+# will sort the (detailed) documentation of file and class members
+# alphabetically by member name. If set to NO the members will appear in
+# declaration order.
+
+SORT_MEMBER_DOCS       = YES
+
+# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the
+# brief documentation of file, namespace and class members alphabetically
+# by member name. If set to NO (the default) the members will appear in
+# declaration order.
+
+SORT_BRIEF_DOCS        = NO
+
+# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be
+# sorted by fully-qualified names, including namespaces. If set to
+# NO (the default), the class list will be sorted only by class name,
+# not including the namespace part.
+# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES.
+# Note: This option applies only to the class list, not to the
+# alphabetical list.
+
+SORT_BY_SCOPE_NAME     = NO
+
+# The GENERATE_TODOLIST tag can be used to enable (YES) or
+# disable (NO) the todo list. This list is created by putting \todo
+# commands in the documentation.
+
+GENERATE_TODOLIST      = YES
+
+# The GENERATE_TESTLIST tag can be used to enable (YES) or
+# disable (NO) the test list. This list is created by putting \test
+# commands in the documentation.
+
+GENERATE_TESTLIST      = YES
+
+# The GENERATE_BUGLIST tag can be used to enable (YES) or
+# disable (NO) the bug list. This list is created by putting \bug
+# commands in the documentation.
+
+GENERATE_BUGLIST       = YES
+
+# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or
+# disable (NO) the deprecated list. This list is created by putting
+# \deprecated commands in the documentation.
+
+GENERATE_DEPRECATEDLIST= YES
+
+# The ENABLED_SECTIONS tag can be used to enable conditional
+# documentation sections, marked by \if sectionname ... \endif.
+
+ENABLED_SECTIONS       =
+
+# The MAX_INITIALIZER_LINES tag determines the maximum number of lines
+# the initial value of a variable or define consists of for it to appear in
+# the documentation. If the initializer consists of more lines than specified
+# here it will be hidden. Use a value of 0 to hide initializers completely.
+# The appearance of the initializer of individual variables and defines in the
+# documentation can be controlled using \showinitializer or \hideinitializer
+# command in the documentation regardless of this setting.
+
+MAX_INITIALIZER_LINES  = 30
+
+# Set the SHOW_USED_FILES tag to NO to disable the list of files generated
+# at the bottom of the documentation of classes and structs. If set to YES the
+# list will mention the files that were used to generate the documentation.
+
+SHOW_USED_FILES        = YES
+
+# If the sources in your project are distributed over multiple directories
+# then setting the SHOW_DIRECTORIES tag to YES will show the directory hierarchy
+# in the documentation. The default is NO.
+
+SHOW_DIRECTORIES       = NO
+
+# The FILE_VERSION_FILTER tag can be used to specify a program or script that
+# doxygen should invoke to get the current version for each file (typically from the
+# version control system). Doxygen will invoke the program by executing (via
+# popen()) the command <command> <input-file>, where <command> is the value of
+# the FILE_VERSION_FILTER tag, and <input-file> is the name of an input file
+# provided by doxygen. Whatever the program writes to standard output
+# is used as the file version. See the manual for examples.
+
+FILE_VERSION_FILTER    =
+
+#---------------------------------------------------------------------------
+# configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+
+# The QUIET tag can be used to turn on/off the messages that are generated
+# by doxygen. Possible values are YES and NO. If left blank NO is used.
+
+QUIET                  = NO
+
+# The WARNINGS tag can be used to turn on/off the warning messages that are
+# generated by doxygen. Possible values are YES and NO. If left blank
+# NO is used.
+
+WARNINGS               = YES
+
+# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings
+# for undocumented members. If EXTRACT_ALL is set to YES then this flag will
+# automatically be disabled.
+
+WARN_IF_UNDOCUMENTED   = YES
+
+# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for
+# potential errors in the documentation, such as not documenting some
+# parameters in a documented function, or documenting parameters that
+# don't exist or using markup commands wrongly.
+
+WARN_IF_DOC_ERROR      = YES
+
+# This WARN_NO_PARAMDOC option can be abled to get warnings for
+# functions that are documented, but have no documentation for their parameters
+# or return value. If set to NO (the default) doxygen will only warn about
+# wrong or incomplete parameter documentation, but not about the absence of
+# documentation.
+
+WARN_NO_PARAMDOC       = NO
+
+# The WARN_FORMAT tag determines the format of the warning messages that
+# doxygen can produce. The string should contain the $file, $line, and $text
+# tags, which will be replaced by the file and line number from which the
+# warning originated and the warning text. Optionally the format may contain
+# $version, which will be replaced by the version of the file (if it could
+# be obtained via FILE_VERSION_FILTER)
+
+WARN_FORMAT            = "$file:$line: $text"
+
+# The WARN_LOGFILE tag can be used to specify a file to which warning
+# and error messages should be written. If left blank the output is written
+# to stderr.
+
+WARN_LOGFILE           =
+
+#---------------------------------------------------------------------------
+# configuration options related to the input files
+#---------------------------------------------------------------------------
+
+# The INPUT tag can be used to specify the files and/or directories that contain
+# documented source files. You may enter file names like "myfile.cpp" or
+# directories like "/usr/src/myproject". Separate the files or directories
+# with spaces.
+
+INPUT                  =
+
+# If the value of the INPUT tag contains directories, you can use the
+# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
+# and *.h) to filter out the source-files in the directories. If left
+# blank the following patterns are tested:
+# *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx
+# *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.py
+
+FILE_PATTERNS          = *.c *.h
+
+# The RECURSIVE tag can be used to turn specify whether or not subdirectories
+# should be searched for input files as well. Possible values are YES and NO.
+# If left blank NO is used.
+
+RECURSIVE              = NO
+
+# The EXCLUDE tag can be used to specify files and/or directories that should
+# excluded from the INPUT source files. This way you can easily exclude a
+# subdirectory from a directory tree whose root is specified with the INPUT tag.
+
+EXCLUDE                =
+
+# The EXCLUDE_SYMLINKS tag can be used select whether or not files or
+# directories that are symbolic links (a Unix filesystem feature) are excluded
+# from the input.
+
+EXCLUDE_SYMLINKS       = NO
+
+# If the value of the INPUT tag contains directories, you can use the
+# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
+# certain files from those directories. Note that the wildcards are matched
+# against the file with absolute path, so to exclude all test directories
+# for example use the pattern */test/*
+
+EXCLUDE_PATTERNS       = tst*
+
+# The EXAMPLE_PATH tag can be used to specify one or more files or
+# directories that contain example code fragments that are included (see
+# the \include command).
+
+EXAMPLE_PATH           =
+
+# If the value of the EXAMPLE_PATH tag contains directories, you can use the
+# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
+# and *.h) to filter out the source-files in the directories. If left
+# blank all files are included.
+
+EXAMPLE_PATTERNS       =
+
+# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be
+# searched for input files to be used with the \include or \dontinclude
+# commands irrespective of the value of the RECURSIVE tag.
+# Possible values are YES and NO. If left blank NO is used.
+
+EXAMPLE_RECURSIVE      = NO
+
+# The IMAGE_PATH tag can be used to specify one or more files or
+# directories that contain image that are included in the documentation (see
+# the \image command).
+
+IMAGE_PATH             = tg
+
+# The INPUT_FILTER tag can be used to specify a program that doxygen should
+# invoke to filter for each input file. Doxygen will invoke the filter program
+# by executing (via popen()) the command <filter> <input-file>, where <filter>
+# is the value of the INPUT_FILTER tag, and <input-file> is the name of an
+# input file. Doxygen will then use the output that the filter program writes
+# to standard output.  If FILTER_PATTERNS is specified, this tag will be
+# ignored.
+
+INPUT_FILTER           =
+
+# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern
+# basis.  Doxygen will compare the file name with each pattern and apply the
+# filter if there is a match.  The filters are a list of the form:
+# pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further
+# info on how filters are used. If FILTER_PATTERNS is empty, INPUT_FILTER
+# is applied to all files.
+
+FILTER_PATTERNS        =
+
+# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using
+# INPUT_FILTER) will be used to filter the input files when producing source
+# files to browse (i.e. when SOURCE_BROWSER is set to YES).
+
+FILTER_SOURCE_FILES    = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to source browsing
+#---------------------------------------------------------------------------
+
+# If the SOURCE_BROWSER tag is set to YES then a list of source files will
+# be generated. Documented entities will be cross-referenced with these sources.
+# Note: To get rid of all source code in the generated output, make sure also
+# VERBATIM_HEADERS is set to NO.
+
+SOURCE_BROWSER         = NO
+
+# Setting the INLINE_SOURCES tag to YES will include the body
+# of functions and classes directly in the documentation.
+
+INLINE_SOURCES         = NO
+
+# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct
+# doxygen to hide any special comment blocks from generated source code
+# fragments. Normal C and C++ comments will always remain visible.
+
+STRIP_CODE_COMMENTS    = NO
+
+# If the REFERENCED_BY_RELATION tag is set to YES (the default)
+# then for each documented function all documented
+# functions referencing it will be listed.
+
+REFERENCED_BY_RELATION = NO
+
+# If the REFERENCES_RELATION tag is set to YES (the default)
+# then for each documented function all documented entities
+# called/used by that function will be listed.
+
+REFERENCES_RELATION    = NO
+
+# If the REFERENCES_LINK_SOURCE tag is set to YES (the default)
+# and SOURCE_BROWSER tag is set to YES, then the hyperlinks from
+# functions in REFERENCES_RELATION and REFERENCED_BY_RELATION lists will
+# link to the source code.  Otherwise they will link to the documentstion.
+
+REFERENCES_LINK_SOURCE = NO
+
+# If the USE_HTAGS tag is set to YES then the references to source code
+# will point to the HTML generated by the htags(1) tool instead of doxygen
+# built-in source browser. The htags tool is part of GNU's global source
+# tagging system (see http://www.gnu.org/software/global/global.html). You
+# will need version 4.8.6 or higher.
+
+USE_HTAGS              = NO
+
+# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen
+# will generate a verbatim copy of the header file for each class for
+# which an include is specified. Set to NO to disable this.
+
+VERBATIM_HEADERS       = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+
+# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index
+# of all compounds will be generated. Enable this if the project
+# contains a lot of classes, structs, unions or interfaces.
+
+ALPHABETICAL_INDEX     = NO
+
+# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then
+# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns
+# in which this list will be split (can be a number in the range [1..20])
+
+COLS_IN_ALPHA_INDEX    = 5
+
+# In case all classes in a project start with a common prefix, all
+# classes will be put under the same header in the alphabetical index.
+# The IGNORE_PREFIX tag can be used to specify one or more prefixes that
+# should be ignored while generating the index headers.
+
+IGNORE_PREFIX          =
+
+#---------------------------------------------------------------------------
+# configuration options related to the HTML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_HTML tag is set to YES (the default) Doxygen will
+# generate HTML output.
+
+GENERATE_HTML          = YES
+
+# The HTML_OUTPUT tag is used to specify where the HTML docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `html' will be used as the default path.
+
+HTML_OUTPUT            = html
+
+# The HTML_FILE_EXTENSION tag can be used to specify the file extension for
+# each generated HTML page (for example: .htm,.php,.asp). If it is left blank
+# doxygen will generate files with .html extension.
+
+HTML_FILE_EXTENSION    = .html
+
+# The HTML_HEADER tag can be used to specify a personal HTML header for
+# each generated HTML page. If it is left blank doxygen will generate a
+# standard header.
+
+HTML_HEADER            =
+
+# The HTML_FOOTER tag can be used to specify a personal HTML footer for
+# each generated HTML page. If it is left blank doxygen will generate a
+# standard footer.
+
+HTML_FOOTER            =
+
+# The HTML_STYLESHEET tag can be used to specify a user-defined cascading
+# style sheet that is used by each HTML page. It can be used to
+# fine-tune the look of the HTML output. If the tag is left blank doxygen
+# will generate a default style sheet. Note that doxygen will try to copy
+# the style sheet file to the HTML output directory, so don't put your own
+# stylesheet in the HTML output directory as well, or it will be erased!
+
+HTML_STYLESHEET        =
+
+# If the HTML_ALIGN_MEMBERS tag is set to YES, the members of classes,
+# files or namespaces will be aligned in HTML using tables. If set to
+# NO a bullet list will be used.
+
+HTML_ALIGN_MEMBERS     = YES
+
+# If the GENERATE_HTMLHELP tag is set to YES, additional index files
+# will be generated that can be used as input for tools like the
+# Microsoft HTML help workshop to generate a compressed HTML help file (.chm)
+# of the generated HTML documentation.
+
+GENERATE_HTMLHELP      = NO
+
+# If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can
+# be used to specify the file name of the resulting .chm file. You
+# can add a path in front of the file if the result should not be
+# written to the html output directory.
+
+CHM_FILE               =
+
+# If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can
+# be used to specify the location (absolute path including file name) of
+# the HTML help compiler (hhc.exe). If non-empty doxygen will try to run
+# the HTML help compiler on the generated index.hhp.
+
+HHC_LOCATION           =
+
+# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag
+# controls if a separate .chi index file is generated (YES) or that
+# it should be included in the master .chm file (NO).
+
+GENERATE_CHI           = NO
+
+# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag
+# controls whether a binary table of contents is generated (YES) or a
+# normal table of contents (NO) in the .chm file.
+
+BINARY_TOC             = NO
+
+# The TOC_EXPAND flag can be set to YES to add extra items for group members
+# to the contents of the HTML help documentation and to the tree view.
+
+TOC_EXPAND             = NO
+
+# The DISABLE_INDEX tag can be used to turn on/off the condensed index at
+# top of each HTML page. The value NO (the default) enables the index and
+# the value YES disables it.
+
+DISABLE_INDEX          = NO
+
+# This tag can be used to set the number of enum values (range [1..20])
+# that doxygen will group on one line in the generated HTML documentation.
+
+ENUM_VALUES_PER_LINE   = 4
+
+# If the GENERATE_TREEVIEW tag is set to YES, a side panel will be
+# generated containing a tree-like index structure (just like the one that
+# is generated for HTML Help). For this to work a browser that supports
+# JavaScript, DHTML, CSS and frames is required (for instance Mozilla 1.0+,
+# Netscape 6.0+, Internet explorer 5.0+, or Konqueror). Windows users are
+# probably better off using the HTML help feature.
+
+GENERATE_TREEVIEW      = YES
+
+# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be
+# used to set the initial width (in pixels) of the frame in which the tree
+# is shown.
+
+TREEVIEW_WIDTH         = 250
+
+#---------------------------------------------------------------------------
+# configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will
+# generate Latex output.
+
+GENERATE_LATEX         = NO
+
+# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `latex' will be used as the default path.
+
+LATEX_OUTPUT           = latex
+
+# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be
+# invoked. If left blank `latex' will be used as the default command name.
+
+LATEX_CMD_NAME         = latex
+
+# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to
+# generate index for LaTeX. If left blank `makeindex' will be used as the
+# default command name.
+
+MAKEINDEX_CMD_NAME     = makeindex
+
+# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact
+# LaTeX documents. This may be useful for small projects and may help to
+# save some trees in general.
+
+COMPACT_LATEX          = NO
+
+# The PAPER_TYPE tag can be used to set the paper type that is used
+# by the printer. Possible values are: a4, a4wide, letter, legal and
+# executive. If left blank a4wide will be used.
+
+PAPER_TYPE             = a4wide
+
+# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX
+# packages that should be included in the LaTeX output.
+
+EXTRA_PACKAGES         =
+
+# The LATEX_HEADER tag can be used to specify a personal LaTeX header for
+# the generated latex document. The header should contain everything until
+# the first chapter. If it is left blank doxygen will generate a
+# standard header. Notice: only use this tag if you know what you are doing!
+
+LATEX_HEADER           =
+
+# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated
+# is prepared for conversion to pdf (using ps2pdf). The pdf file will
+# contain links (just like the HTML output) instead of page references
+# This makes the output suitable for online browsing using a pdf viewer.
+
+PDF_HYPERLINKS         = NO
+
+# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of
+# plain latex in the generated Makefile. Set this option to YES to get a
+# higher quality PDF documentation.
+
+USE_PDFLATEX           = NO
+
+# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode.
+# command to the generated LaTeX files. This will instruct LaTeX to keep
+# running if errors occur, instead of asking the user for help.
+# This option is also used when generating formulas in HTML.
+
+LATEX_BATCHMODE        = NO
+
+# If LATEX_HIDE_INDICES is set to YES then doxygen will not
+# include the index chapters (such as File Index, Compound Index, etc.)
+# in the output.
+
+LATEX_HIDE_INDICES     = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the RTF output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output
+# The RTF output is optimized for Word 97 and may not look very pretty with
+# other RTF readers or editors.
+
+GENERATE_RTF           = NO
+
+# The RTF_OUTPUT tag is used to specify where the RTF docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `rtf' will be used as the default path.
+
+RTF_OUTPUT             = rtf
+
+# If the COMPACT_RTF tag is set to YES Doxygen generates more compact
+# RTF documents. This may be useful for small projects and may help to
+# save some trees in general.
+
+COMPACT_RTF            = NO
+
+# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated
+# will contain hyperlink fields. The RTF file will
+# contain links (just like the HTML output) instead of page references.
+# This makes the output suitable for online browsing using WORD or other
+# programs which support those fields.
+# Note: wordpad (write) and others do not support links.
+
+RTF_HYPERLINKS         = NO
+
+# Load stylesheet definitions from file. Syntax is similar to doxygen's
+# config file, i.e. a series of assignments. You only have to provide
+# replacements, missing definitions are set to their default value.
+
+RTF_STYLESHEET_FILE    =
+
+# Set optional variables used in the generation of an rtf document.
+# Syntax is similar to doxygen's config file.
+
+RTF_EXTENSIONS_FILE    =
+
+#---------------------------------------------------------------------------
+# configuration options related to the man page output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_MAN tag is set to YES (the default) Doxygen will
+# generate man pages
+
+GENERATE_MAN           = NO
+
+# The MAN_OUTPUT tag is used to specify where the man pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `man' will be used as the default path.
+
+MAN_OUTPUT             = man
+
+# The MAN_EXTENSION tag determines the extension that is added to
+# the generated man pages (default is the subroutine's section .3)
+
+MAN_EXTENSION          = .3
+
+# If the MAN_LINKS tag is set to YES and Doxygen generates man output,
+# then it will generate one additional man file for each entity
+# documented in the real man page(s). These additional files
+# only source the real man page, but without them the man command
+# would be unable to find the correct page. The default is NO.
+
+MAN_LINKS              = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the XML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_XML tag is set to YES Doxygen will
+# generate an XML file that captures the structure of
+# the code including all documentation.
+
+GENERATE_XML           = NO
+
+# The XML_OUTPUT tag is used to specify where the XML pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `xml' will be used as the default path.
+
+XML_OUTPUT             = xml
+
+# The XML_SCHEMA tag can be used to specify an XML schema,
+# which can be used by a validating XML parser to check the
+# syntax of the XML files.
+
+XML_SCHEMA             =
+
+# The XML_DTD tag can be used to specify an XML DTD,
+# which can be used by a validating XML parser to check the
+# syntax of the XML files.
+
+XML_DTD                =
+
+# If the XML_PROGRAMLISTING tag is set to YES Doxygen will
+# dump the program listings (including syntax highlighting
+# and cross-referencing information) to the XML output. Note that
+# enabling this will significantly increase the size of the XML output.
+
+XML_PROGRAMLISTING     = YES
+
+#---------------------------------------------------------------------------
+# configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will
+# generate an AutoGen Definitions (see autogen.sf.net) file
+# that captures the structure of the code including all
+# documentation. Note that this feature is still experimental
+# and incomplete at the moment.
+
+GENERATE_AUTOGEN_DEF   = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_PERLMOD tag is set to YES Doxygen will
+# generate a Perl module file that captures the structure of
+# the code including all documentation. Note that this
+# feature is still experimental and incomplete at the
+# moment.
+
+GENERATE_PERLMOD       = NO
+
+# If the PERLMOD_LATEX tag is set to YES Doxygen will generate
+# the necessary Makefile rules, Perl scripts and LaTeX code to be able
+# to generate PDF and DVI output from the Perl module output.
+
+PERLMOD_LATEX          = NO
+
+# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be
+# nicely formatted so it can be parsed by a human reader.  This is useful
+# if you want to understand what is going on.  On the other hand, if this
+# tag is set to NO the size of the Perl module output will be much smaller
+# and Perl will parse it just the same.
+
+PERLMOD_PRETTY         = YES
+
+# The names of the make variables in the generated doxyrules.make file
+# are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX.
+# This is useful so different doxyrules.make files included by the same
+# Makefile don't overwrite each other's variables.
+
+PERLMOD_MAKEVAR_PREFIX =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor
+#---------------------------------------------------------------------------
+
+# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will
+# evaluate all C-preprocessor directives found in the sources and include
+# files.
+
+ENABLE_PREPROCESSING   = YES
+
+# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro
+# names in the source code. If set to NO (the default) only conditional
+# compilation will be performed. Macro expansion can be done in a controlled
+# way by setting EXPAND_ONLY_PREDEF to YES.
+
+MACRO_EXPANSION        = NO
+
+# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES
+# then the macro expansion is limited to the macros specified with the
+# PREDEFINED and EXPAND_AS_DEFINED tags.
+
+EXPAND_ONLY_PREDEF     = NO
+
+# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files
+# in the INCLUDE_PATH (see below) will be search if a #include is found.
+
+SEARCH_INCLUDES        = YES
+
+# The INCLUDE_PATH tag can be used to specify one or more directories that
+# contain include files that are not input files but should be processed by
+# the preprocessor.
+
+INCLUDE_PATH           =
+
+# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard
+# patterns (like *.h and *.hpp) to filter out the header-files in the
+# directories. If left blank, the patterns specified with FILE_PATTERNS will
+# be used.
+
+INCLUDE_FILE_PATTERNS  =
+
+# The PREDEFINED tag can be used to specify one or more macro names that
+# are defined before the preprocessor is started (similar to the -D option of
+# gcc). The argument of the tag is a list of macros of the form: name
+# or name=definition (no spaces). If the definition and the = are
+# omitted =1 is assumed. To prevent a macro definition from being
+# undefined via #undef or recursively expanded use the := operator
+# instead of the = operator.
+
+PREDEFINED             =
+
+# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then
+# this tag can be used to specify a list of macro names that should be expanded.
+# The macro definition that is found in the sources will be used.
+# Use the PREDEFINED tag if you want to use a different macro definition.
+
+EXPAND_AS_DEFINED      =
+
+# If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then
+# doxygen's preprocessor will remove all function-like macros that are alone
+# on a line, have an all uppercase name, and do not end with a semicolon. Such
+# function macros are typically used for boiler-plate code, and will confuse
+# the parser if not removed.
+
+SKIP_FUNCTION_MACROS   = YES
+
+#---------------------------------------------------------------------------
+# Configuration::additions related to external references
+#---------------------------------------------------------------------------
+
+# The TAGFILES option can be used to specify one or more tagfiles.
+# Optionally an initial location of the external documentation
+# can be added for each tagfile. The format of a tag file without
+# this location is as follows:
+#   TAGFILES = file1 file2 ...
+# Adding location for the tag files is done as follows:
+#   TAGFILES = file1=loc1 "file2 = loc2" ...
+# where "loc1" and "loc2" can be relative or absolute paths or
+# URLs. If a location is present for each tag, the installdox tool
+# does not have to be run to correct the links.
+# Note that each tag file must have a unique name
+# (where the name does NOT include the path)
+# If a tag file is not located in the directory in which doxygen
+# is run, you must also specify the path to the tagfile here.
+
+TAGFILES               =
+
+# When a file name is specified after GENERATE_TAGFILE, doxygen will create
+# a tag file that is based on the input files it reads.
+
+GENERATE_TAGFILE       =
+
+# If the ALLEXTERNALS tag is set to YES all external classes will be listed
+# in the class index. If set to NO only the inherited external classes
+# will be listed.
+
+ALLEXTERNALS           = NO
+
+# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed
+# in the modules index. If set to NO, only the current project's groups will
+# be listed.
+
+EXTERNAL_GROUPS        = YES
+
+# The PERL_PATH should be the absolute path and name of the perl script
+# interpreter (i.e. the result of `which perl').
+
+PERL_PATH              = /usr/bin/perl
+
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool
+#---------------------------------------------------------------------------
+
+# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will
+# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base
+# or super classes. Setting the tag to NO turns the diagrams off. Note that
+# this option is superseded by the HAVE_DOT option below. This is only a
+# fallback. It is recommended to install and use dot, since it yields more
+# powerful graphs.
+
+CLASS_DIAGRAMS         = NO
+
+# If set to YES, the inheritance and collaboration graphs will hide
+# inheritance and usage relations if the target is undocumented
+# or is not a class.
+
+HIDE_UNDOC_RELATIONS   = YES
+
+# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is
+# available from the path. This tool is part of Graphviz, a graph visualization
+# toolkit from AT&T and Lucent Bell Labs. The other options in this section
+# have no effect if this option is set to NO (the default)
+
+HAVE_DOT               = NO
+
+# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for each documented class showing the direct and
+# indirect inheritance relations. Setting this tag to YES will force the
+# the CLASS_DIAGRAMS tag to NO.
+
+CLASS_GRAPH            = YES
+
+# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for each documented class showing the direct and
+# indirect implementation dependencies (inheritance, containment, and
+# class references variables) of the class with other documented classes.
+
+COLLABORATION_GRAPH    = YES
+
+# If the GROUP_GRAPHS and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for groups, showing the direct groups dependencies
+
+GROUP_GRAPHS           = YES
+
+# If the UML_LOOK tag is set to YES doxygen will generate inheritance and
+# collaboration diagrams in a style similar to the OMG's Unified Modeling
+# Language.
+
+UML_LOOK               = NO
+
+# If set to YES, the inheritance and collaboration graphs will show the
+# relations between templates and their instances.
+
+TEMPLATE_RELATIONS     = NO
+
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT
+# tags are set to YES then doxygen will generate a graph for each documented
+# file showing the direct and indirect include dependencies of the file with
+# other documented files.
+
+INCLUDE_GRAPH          = YES
+
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and
+# HAVE_DOT tags are set to YES then doxygen will generate a graph for each
+# documented header file showing the documented files that directly or
+# indirectly include this file.
+
+INCLUDED_BY_GRAPH      = YES
+
+# If the CALL_GRAPH and HAVE_DOT tags are set to YES then doxygen will
+# generate a call dependency graph for every global function or class method.
+# Note that enabling this option will significantly increase the time of a run.
+# So in most cases it will be better to enable call graphs for selected
+# functions only using the \callgraph command.
+
+CALL_GRAPH             = NO
+
+# If the CALLER_GRAPH and HAVE_DOT tags are set to YES then doxygen will
+# generate a caller dependency graph for every global function or class method.
+# Note that enabling this option will significantly increase the time of a run.
+# So in most cases it will be better to enable caller graphs for selected
+# functions only using the \callergraph command.
+
+CALLER_GRAPH           = YES
+
+# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen
+# will graphical hierarchy of all classes instead of a textual one.
+
+GRAPHICAL_HIERARCHY    = YES
+
+# If the DIRECTORY_GRAPH, SHOW_DIRECTORIES and HAVE_DOT tags are set to YES
+# then doxygen will show the dependencies a directory has on other directories
+# in a graphical way. The dependency relations are determined by the #include
+# relations between the files in the directories.
+
+DIRECTORY_GRAPH        = YES
+
+# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images
+# generated by dot. Possible values are png, jpg, or gif
+# If left blank png will be used.
+
+DOT_IMAGE_FORMAT       = png
+
+# The tag DOT_PATH can be used to specify the path where the dot tool can be
+# found. If left blank, it is assumed the dot tool can be found in the path.
+
+DOT_PATH               =
+
+# The DOTFILE_DIRS tag can be used to specify one or more directories that
+# contain dot files that are included in the documentation (see the
+# \dotfile command).
+
+DOTFILE_DIRS           =
+
+# The MAX_DOT_GRAPH_WIDTH tag can be used to set the maximum allowed width
+# (in pixels) of the graphs generated by dot. If a graph becomes larger than
+# this value, doxygen will try to truncate the graph, so that it fits within
+# the specified constraint. Beware that most browsers cannot cope with very
+# large images.
+
+MAX_DOT_GRAPH_WIDTH    = 1024
+
+# The MAX_DOT_GRAPH_HEIGHT tag can be used to set the maximum allows height
+# (in pixels) of the graphs generated by dot. If a graph becomes larger than
+# this value, doxygen will try to truncate the graph, so that it fits within
+# the specified constraint. Beware that most browsers cannot cope with very
+# large images.
+
+MAX_DOT_GRAPH_HEIGHT   = 1024
+
+# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the
+# graphs generated by dot. A depth value of 3 means that only nodes reachable
+# from the root by following a path via at most 3 edges will be shown. Nodes
+# that lay further from the root node will be omitted. Note that setting this
+# option to 1 or 2 may greatly reduce the computation time needed for large
+# code bases. Also note that a graph may be further truncated if the graph's
+# image dimensions are not sufficient to fit the graph (see MAX_DOT_GRAPH_WIDTH
+# and MAX_DOT_GRAPH_HEIGHT). If 0 is used for the depth value (the default),
+# the graph is not depth-constrained.
+
+MAX_DOT_GRAPH_DEPTH    = 0
+
+# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent
+# background. This is disabled by default, which results in a white background.
+# Warning: Depending on the platform used, enabling this option may lead to
+# badly anti-aliased labels on the edges of a graph (i.e. they become hard to
+# read).
+
+DOT_TRANSPARENT        = NO
+
+# Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output
+# files in one run (i.e. multiple -o and -T options on the command line). This
+# makes dot run faster, but since only newer versions of dot (>1.8.10)
+# support this, this feature is disabled by default.
+
+DOT_MULTI_TARGETS      = NO
+
+# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will
+# generate a legend page explaining the meaning of the various boxes and
+# arrows in the dot generated graphs.
+
+GENERATE_LEGEND        = YES
+
+# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will
+# remove the intermediate dot files that are used to generate
+# the various graphs.
+
+DOT_CLEANUP            = YES
+
+#---------------------------------------------------------------------------
+# Configuration::additions related to the search engine
+#---------------------------------------------------------------------------
+
+# The SEARCHENGINE tag specifies whether or not a search engine should be
+# used. If set to NO the values of all tags below this one will be ignored.
+
+SEARCHENGINE           = NO
diff --git a/src/lib/kStuff/kLdr/Makefile.kmk b/src/lib/kStuff/kLdr/Makefile.kmk
new file mode 100644
index 0000000..fc8455b
--- /dev/null
+++ b/src/lib/kStuff/kLdr/Makefile.kmk
@@ -0,0 +1,224 @@
+# $Id: Makefile.kmk 29 2009-07-01 20:30:29Z bird $
+## @file
+# kLdr - The Dynamic Loader, sub-makefile.
+#
+
+#
+# Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+DEPTH ?= ..
+SUB_DEPTH = ..
+include $(PATH_KBUILD)/subheader.kmk
+
+#todo: include $(PATH_SUB_CURRENT)/testcase/Makefile.kmk
+
+#
+# Template for testcases.
+#
+TEMPLATE_TST = Testcase template
+ifeq ($(BUILD_TARGET),win)
+ ifeq ($(BUILD_TARGET_ARCH), x86)
+  TEMPLATE_TST_TOOL = VCC70
+  TEMPLATE_TST_CFLAGS = -W3 -Zi -Zl -MD
+  TEMPLATE_TST_LIBS = $(PATH_TOOL_VCC70_LIB)/msvcrt.lib
+ else
+  TEMPLATE_TST_TOOL = VCC80AMD64
+  TEMPLATE_TST_CFLAGS = -W3 -Zi -Zl -MD
+  TEMPLATE_TST_LIBS = $(PATH_TOOL_VCC80AMD64_LIB)/msvcrt.lib
+ endif
+ TEMPLATE_TST_CFLAGS.release = -O2
+ TEMPLATE_TST_ASFLAGS = -f win
+ TEMPLATE_TST_DEFS = __WIN__
+ TEMPLATE_TST_SDKS = WINPSDK W2K3DDK
+
+else
+ ifeq ($(BUILD_TARGET),os2)
+  TEMPLATE_TST_TOOL = GCC3OMF
+  TEMPLATE_TST_ASFLAGS = -f obj
+  TEMPLATE_TST_LIBS = os2 gcc end
+ else ifeq ($(BUILD_TARGET),darwin)
+  TEMPLATE_TST_TOOL = GCC4MACHO
+  TEMPLATE_TST_ASFLAGS = -f macho
+  TEMPLATE_TST_LIBS = #os2 gcc end
+ else
+  TEMPLATE_TST_TOOL = GCC3
+  TEMPLATE_TST_ASFLAGS = -f elf
+  TEMPLATE_TST_LIBS = gcc
+ endif
+ TEMPLATE_TST_CFLAGS = -Wall -pedantic -g -std=gnu99
+ TEMPLATE_TST_CFLAGS.release = -O2
+ TEMPLATE_TST_LDFLAGS =
+endif
+TEMPLATE_TST_INCS := $(PATH_SUB_CURRENT) $(PATH_SUB_ROOT)/include
+
+
+#
+# The kLdr DLL.
+#
+DLLS += kLdr
+kLdr_ASTOOL = NASM
+ifeq ($(BUILD_TARGET),win)
+ ifeq ($(BUILD_TARGET_ARCH),x86)
+  kLdr_TOOL = VCC70
+  kLdr_CFLAGS = -W3 -Zl -ML
+  kLdr_LDFLAGS = -Entry:DllMain@12 -Debug
+  kLdr_LIBS = \
+   	$(PATH_TOOL_VCC70_LIB)/LIBC.lib \
+	$(PATH_SDK_W2K3DDKX86_LIB)/ntdll.lib
+ else
+  kLdr_TOOL = VCC80AMD64
+  kLdr_ASTOOL = YASM
+  kLdr_CFLAGS = -W3 -Zl -MT
+  kLdr_LDFLAGS = -Entry:DllMain -Debug
+  kLdr_LIBS = \
+   	$(PATH_TOOL_VCC80AMD64_LIB)/LIBCMT.lib \
+	$(PATH_SDK_W2K3DDKAMD64_LIB)/ntdll.lib
+ endif
+ kLdr_ASFLAGS = -f win
+ kLdr_DEFS = __WIN__
+ kLdr_SDKS.x86 = WIN32SDK W2K3DDKX86
+ kLdr_SDKS.amd64 = WIN64SDK W2K3DDKAMD64
+else
+ ifeq ($(BUILD_TARGET),os2)
+  kLdr_TOOL = GCC3OMF
+  kLdr_ASFLAGS = -f obj
+  kLdr_LIBS = os2 gcc end
+ else ifeq ($(BUILD_TARGET),darwin)
+  kLdr_TOOL = GCC4MACHO
+  kLdr_ASFLAGS = -f macho
+  kLdr_LIBS = #os2 gcc end
+ else
+  kLdr_TOOL = GCC3
+  kLdr_ASFLAGS = -f elf
+  kLdr_LIBS = gcc
+ endif
+ kLdr_CFLAGS = -Wall -pedantic
+ kLdr_LDFLAGS = -nostdlib
+endif
+kLdr_INCS := $(PATH_SUB_CURRENT) $(PATH_SUB_ROOT)/include
+kLdr_SOURCES = \
+	kLdr.c \
+	kLdrDyld.c \
+	kLdrDyldFind.c \
+	kLdrDyldMod.c \
+	kLdrDyldOS.c \
+	kLdrDyLdSem.c \
+	kLdrMod.c \
+	kLdrModLX.c \
+	kLdrModMachO.c \
+	kLdrModNative.c \
+	kLdrModPE.c
+kLdr_SOURCES.os2 = \
+	kLdr-os2.def \
+	kLdr-os2.c \
+	kLdrA-os2.asm
+kLdr_SOURCES.win = \
+	kLdr-win.def \
+	kLdr-win.c
+kLdr_LIBS += \
+	$(PATH_LIB)/kRdrStatic$(SUFF_LIB) \
+	$(PATH_LIB)/kCpuStatic$(SUFF_LIB) \
+	$(PATH_LIB)/kHlpBareStatic$(SUFF_LIB) \
+	$(PATH_LIB)/kErrStatic$(SUFF_LIB)
+
+#
+# A static edition of kLdr.
+#
+LIBRARIES += kLdrStatic
+kLdrStatic_TEMPLATE = kStuffLIB
+kLdrStatic_SDKS.win = WINPSDK W2K3DDK
+kLdrStatic_INCS := $(PATH_SUB_CURRENT) $(PATH_SUB_ROOT)/include
+kLdrStatic_DEFS.darwin = __DARWIN__
+kLdrStatic_DEFS.os2 = __OS2__
+kLdrStatic_DEFS.win = __WIN__
+kLdrStatic_SOURCES = $(kLdr_SOURCES)
+
+#
+# The OS/2 stub program.
+#
+PROGRAMS.os2 = kLdrExeStub-os2
+kLdrExeStub-os2_TOOL = GCC3OMF
+kLdrExeStub-os2_ASTOOL = NASM
+kLdrExeStub-os2_ASFLAGS = -f obj
+#kLdrExeStub-os2_LDFLAGS = -nostdlib
+kLdrExeStub-os2_LDFLAGS = -nostdlib -Zstack 64
+kLdrExeStub-os2_LIBS = $(TARGET_kLdr)
+#kLdrExeStub-os2_SOURCES = kLdrExeStub-os2.asm
+kLdrExeStub-os2_SOURCES =  kLdrExeStub-os2A.asm kLdrExeStub-os2.c
+
+#
+# The Windows stub program.
+#
+PROGRAMS.win = kLdrExeStub-win
+kLdrExeStub-win_TOOL.win.x86 = VCC70
+kLdrExeStub-win_TOOL.win.amd64 = VCC80AMD64
+kLdrExeStub-win_SDKS.x86 = WIN32SDK
+kLdrExeStub-win_SDKS.amd64 = WIN64SDK
+kLdrExeStub-win_INCS := $(PATH_SUB_CURRENT) $(PATH_SUB_ROOT)/include
+kLdrExeStub-win_DEFS = __WIN__
+kLdrExeStub-win_CFLAGS = -W3 -Zl
+kLdrExeStub-win_CFLAGS.debug = -Zi
+kLdrExeStub-win_LDFLAGS = -Entry:WindowsMain -SubSystem:Console -FIXED:NO
+kLdrExeStub-win_LIBS = $(TARGET_kLdr:.dll=.lib)
+kLdrExeStub-win_SOURCES = kLdrExeStub-win.c
+
+
+##
+## The (stub) utility.
+##
+#PROGRAMS = kLdrUtil
+
+
+#
+# Heap testcase.
+#
+#PROGRAMS += tstkLdrHeap
+tstkLdrHeap_TEMPLATE = TST
+tstkLdrHeap_SOURCES = \
+	tstkLdrHeap.c \
+	kHlp.c \
+	kHlpHeap.c \
+	kHlpMem.c \
+	kHlpPath.c \
+	kHlpSem.c \
+	kHlpStr.c \
+
+#
+# Heap testcase.
+#
+PROGRAMS += tstkLdrMod
+tstkLdrMod_TEMPLATE = TST
+tstkLdrMod_SOURCES = \
+	tstkLdrMod.c
+ifeq ($(BUILD_TARGET),win)
+tstkLdrMod_LIBS = $(TARGET_kLdr:.dll=.lib)
+else
+tstkLdrMod_LIBS = $(TARGET_kLdr)
+endif
+
+
+# Generate rules.
+include $(PATH_KBUILD)/subfooter.kmk
+
diff --git a/src/lib/kStuff/kLdr/kLdr-os2.c b/src/lib/kStuff/kLdr/kLdr-os2.c
new file mode 100644
index 0000000..62835ac
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdr-os2.c
@@ -0,0 +1,66 @@
+/* $Id: kLdr-os2.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - The Dynamic Loader, OS/2 Specifics.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#define INCL_BASE
+#include <os2.h>
+
+#include <k/kLdr.h>
+#include "kLdrInternal.h"
+
+
+/**
+ * The DLL main function.
+ *
+ * @returns TRUE / FALSE.
+ * @param   hmod        The dll handle.
+ * @param   fFlags      Flags.
+ */
+ULONG _System _DLL_InitTerm(HMODULE hmod, ULONG fFlags)
+{
+    switch (fFlags)
+    {
+        case 0:
+        {
+            int rc = kldrInit();
+            return rc == 0;
+        }
+
+        case 1:
+            kldrTerm();
+            return TRUE;
+
+        default:
+            return FALSE;
+    }
+}
+
diff --git a/src/lib/kStuff/kLdr/kLdr-os2.def b/src/lib/kStuff/kLdr/kLdr-os2.def
new file mode 100644
index 0000000..e9895f7
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdr-os2.def
@@ -0,0 +1,115 @@
+; $Id: kLdr-os2.def 29 2009-07-01 20:30:29Z bird $
+;; @file
+; kLdr - The Dynamic Loader, OS/2 Linker Definition File.
+;
+
+;
+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+;
+; Permission is hereby granted, free of charge, to any person
+; obtaining a copy of this software and associated documentation
+; files (the "Software"), to deal in the Software without
+; restriction, including without limitation the rights to use,
+; copy, modify, merge, publish, distribute, sublicense, and/or sell
+; copies of the Software, and to permit persons to whom the
+; Software is furnished to do so, subject to the following
+; conditions:
+;
+; The above copyright notice and this permission notice shall be
+; included in all copies or substantial portions of the Software.
+;
+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+; OTHER DEALINGS IN THE SOFTWARE.
+;
+
+LIBRARY kLdr INITINSTANCE TERMINSTANCE
+DATA MULTIPLE
+EXPORTS
+    ; The file reader API
+    _kRdrAddProvider
+    _kRdrOpen
+    _kRdrClose
+    _kRdrRead
+    _kRdrAllMap
+    _kRdrAllUnmap
+    _kRdrSize
+    _kRdrTell
+    _kRdrName
+    _kRdrPageSize
+    _kRdrMap
+    _kRdrRefresh
+    _kRdrProtect
+    _kRdrUnmap
+    _kRdrDone
+
+    ; The module interpreter API
+    _kLdrModOpen
+    _kLdrModOpenFromRdr
+    _kLdrModOpenNative
+    _kLdrModOpenNativeByHandle
+    _kLdrModClose
+    _kLdrModQuerySymbol
+    _kLdrModEnumSymbols
+    _kLdrModGetImport
+    _kLdrModNumberOfImports
+    _kLdrModCanExecuteOn
+    _kLdrModGetStackInfo
+    _kLdrModQueryMainEntrypoint
+    _kLdrModEnumDbgInfo
+    _kLdrModHasDbgInfo
+    _kLdrModMap
+    _kLdrModUnmap
+    _kLdrModAllocTLS
+    _kLdrModFreeTLS
+    _kLdrModReload
+    _kLdrModFixupMapping
+    _kLdrModCallInit
+    _kLdrModCallTerm
+    _kLdrModCallThread
+    _kLdrModSize
+    _kLdrModGetBits
+    _kLdrModRelocateBits
+
+    ; Process Bootstrapping
+    _kLdrDyldLoadExe
+
+    ; Dynamic loading
+    _kLdrDyldLoad
+    _kLdrDyldUnload
+    _kLdrDyldFindByName
+    _kLdrDyldFindByAddress
+    _kLdrDyldGetName
+    _kLdrDyldGetFilename
+    _kLdrDyldQuerySymbol
+
+
+    ; OS/2 API wrappers:
+;    kLdrLoadModule
+;    kLdrFreeModule
+;    kLdrQueryModuleHandle
+;    kLdrQueryModuleName
+;    kLdrQueryProcAddr
+;    kLdrQueryProcType
+;    kLdrQueryModFromEIP
+;    kLdrReplaceModule
+;    kLdrGetResource
+;    kLdrFreeResource
+;    kLdrQueryResourceSize
+
+    ; dlfcn API wrappers:
+;    _kLdrDlOpen
+;    _kLdrDlClose
+;    _kLdrDlError
+;    _kLdrDlSym
+;    _kLdrDlFunc
+
+    ; Error APIs:
+    _kErrStr
+
+
diff --git a/src/lib/kStuff/kLdr/kLdr-win.c b/src/lib/kStuff/kLdr/kLdr-win.c
new file mode 100644
index 0000000..1fe7e59
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdr-win.c
@@ -0,0 +1,77 @@
+/* $Id: kLdr-win.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - The Dynamic Loader, Windows Specifics.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <Windows.h>
+
+#include <k/kLdr.h>
+#include "kLdrInternal.h"
+
+
+/**
+ * The DLL main function.
+ *
+ * @returns TRUE / FALSE.
+ * @param   hDllHandle  The dll handle.
+ * @param   dwReason    The reason we're being called.
+ * @param   lpReserved  Reserved.
+ */
+BOOL __stdcall DllMain(HANDLE hDllHandle, DWORD dwReason, LPVOID lpReserved)
+{
+    switch (dwReason)
+    {
+        case DLL_PROCESS_ATTACH:
+        {
+            int rc = kldrInit();
+            return rc == 0;
+        }
+
+        case DLL_PROCESS_DETACH:
+            kldrTerm();
+            return TRUE;
+
+        case DLL_THREAD_ATTACH:
+        {
+            //int rc = kLdrDyldThreadAttach();
+            //return rc == 0;
+            return TRUE;
+        }
+
+        case DLL_THREAD_DETACH:
+            //kLdrDyldThreadDetach();
+            return TRUE;
+
+        default:
+            return FALSE;
+    }
+}
+
diff --git a/src/lib/kStuff/kLdr/kLdr-win.def b/src/lib/kStuff/kLdr/kLdr-win.def
new file mode 100644
index 0000000..fc36e59
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdr-win.def
@@ -0,0 +1,113 @@
+; $Id: kLdr-win.def 29 2009-07-01 20:30:29Z bird $
+;; @file
+; kLdr - The Dynamic Loader, Windows Linker Definition File.
+;
+
+;
+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+;
+; Permission is hereby granted, free of charge, to any person
+; obtaining a copy of this software and associated documentation
+; files (the "Software"), to deal in the Software without
+; restriction, including without limitation the rights to use,
+; copy, modify, merge, publish, distribute, sublicense, and/or sell
+; copies of the Software, and to permit persons to whom the
+; Software is furnished to do so, subject to the following
+; conditions:
+;
+; The above copyright notice and this permission notice shall be
+; included in all copies or substantial portions of the Software.
+;
+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+; OTHER DEALINGS IN THE SOFTWARE.
+;
+
+LIBRARY kLdr
+EXPORTS
+    ; The file reader API
+    kRdrAddProvider
+    kRdrOpen
+    kRdrClose
+    kRdrRead
+    kRdrAllMap
+    kRdrAllUnmap
+    kRdrSize
+    kRdrTell
+    kRdrName
+    kRdrPageSize
+    kRdrMap
+    kRdrRefresh
+    kRdrProtect
+    kRdrUnmap
+    kRdrDone
+
+    ; The module interpreter API
+    kLdrModOpen
+    kLdrModOpenFromRdr
+    kLdrModOpenNative
+    kLdrModOpenNativeByHandle
+    kLdrModClose
+    kLdrModQuerySymbol
+    kLdrModEnumSymbols
+    kLdrModGetImport
+    kLdrModNumberOfImports
+    kLdrModCanExecuteOn
+    kLdrModGetStackInfo
+    kLdrModQueryMainEntrypoint
+    kLdrModEnumDbgInfo
+    kLdrModHasDbgInfo
+    kLdrModMap
+    kLdrModUnmap
+    kLdrModAllocTLS
+    kLdrModFreeTLS
+    kLdrModReload
+    kLdrModFixupMapping
+    kLdrModCallInit
+    kLdrModCallTerm
+    kLdrModCallThread
+    kLdrModSize
+    kLdrModGetBits
+    kLdrModRelocateBits
+
+    ; Process Bootstrapping
+    kLdrDyldLoadExe
+
+    ; Dynamic loading
+    kLdrDyldLoad
+    kLdrDyldUnload
+    kLdrDyldFindByName
+    kLdrDyldFindByAddress
+    kLdrDyldGetName
+    kLdrDyldGetFilename
+    kLdrDyldQuerySymbol
+
+
+    ; OS/2 API wrappers:
+;    kLdrLoadModule
+;    kLdrFreeModule
+;    kLdrQueryModuleHandle
+;    kLdrQueryModuleName
+;    kLdrQueryProcAddr
+;    kLdrQueryProcType
+;    kLdrQueryModFromEIP
+;    kLdrReplaceModule
+;    kLdrGetResource
+;    kLdrFreeResource
+;    kLdrQueryResourceSize
+
+    ; dlfcn API wrappers:
+;    _kLdrDlOpen
+;    _kLdrDlClose
+;    _kLdrDlError
+;    _kLdrDlSym
+;    _kLdrDlFunc
+
+    ; Error APIs:
+    kErrName
+
diff --git a/src/lib/kStuff/kLdr/kLdr.c b/src/lib/kStuff/kLdr/kLdr.c
new file mode 100644
index 0000000..38f4cfa
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdr.c
@@ -0,0 +1,145 @@
+/* $Id: kLdr.c 29 2009-07-01 20:30:29Z bird $ */

+/** @file

+ * kLdr - The Dynamic Loader.

+ */

+

+/*

+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>

+ *

+ * Permission is hereby granted, free of charge, to any person

+ * obtaining a copy of this software and associated documentation

+ * files (the "Software"), to deal in the Software without

+ * restriction, including without limitation the rights to use,

+ * copy, modify, merge, publish, distribute, sublicense, and/or sell

+ * copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following

+ * conditions:

+ *

+ * The above copyright notice and this permission notice shall be

+ * included in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

+ * OTHER DEALINGS IN THE SOFTWARE.

+ */

+

+

+/** @mainpage   kLdr - The Dynamic Loader

+ *

+ * The purpose of kLdr is to provide a generic interface for querying

+ * information about and loading executable image modules.

+ *

+ * kLdr defines the term executable image to include all kinds of files that contains

+ * binary code that can be executed on a CPU - linker objects (OBJs/Os), shared

+ * objects (SOs), dynamic link libraries (DLLs), executables (EXEs), and all kinds

+ * of kernel modules / device drivers (SYSs).

+ *

+ * kLdr provides two types of services:

+ *      -# Inspect or/and load individual modules (kLdrMod).

+ *      -# Work as a dynamic loader - construct and maintain an address space (kLdrDy).

+ *

+ * The kLdrMod API works on KLDRMOD structures where all the internals are exposed, while

+ * the kLdrDy API works opque KLDRDY structures. KLDRDY are in reality simple wrappers

+ * around KLDRMOD with some extra linking and attributes.

+ *

+ */

+

+

+/*******************************************************************************

+*   Header Files                                                               *

+*******************************************************************************/

+#include <k/kLdr.h>

+#include "kLdrInternal.h"

+

+

+/*******************************************************************************

+*   Global Variables                                                           *

+*******************************************************************************/

+/** Flag indicating whether we've initialized the loader or not.

+ *

+ * 0 if not initialized.

+ * -1 if we're initializing or terminating.

+ * 1 if we've successfully initialized it.

+ * -2 if initialization failed.

+ */

+static int volatile g_fInitialized;

+

+

+

+/**

+ * Initializes the loader.

+ * @returns 0 on success, non-zero OS status code on failure.

+ */

+int kldrInit(void)

+{

+    int rc;

+

+    /* check we're already good. */

+    if (g_fInitialized == 1)

+        return 0;

+

+    /* a tiny serialization effort. */

+    for (;;)

+    {

+        if (g_fInitialized == 1)

+            return 0;

+        if (g_fInitialized == -2)

+            return -1;

+        /** @todo atomic test and set if we care. */

+        if (g_fInitialized == 0)

+        {

+            g_fInitialized = -1;

+            break;

+        }

+        kHlpSleep(1);

+    }

+

+    /*

+     * Do the initialization.

+     */

+    rc = kHlpHeapInit();

+    if (!rc)

+    {

+        rc = kLdrDyldSemInit();

+        if (!rc)

+        {

+            rc = kldrDyldInit();

+            if (!rc)

+            {

+                g_fInitialized = 1;

+                return 0;

+            }

+            kLdrDyldSemTerm();

+        }

+        kHlpHeapTerm();

+    }

+    g_fInitialized = -2;

+    return rc;

+}

+

+

+/**

+ * Terminates the loader.

+ */

+void kldrTerm(void)

+{

+    /* can't terminate unless it's initialized. */

+    if (g_fInitialized != 1)

+        return;

+    g_fInitialized = -1;

+

+    /*

+     * Do the termination.

+     */

+    kLdrDyldSemTerm();

+    kHlpHeapTerm();

+

+    /* done */

+    g_fInitialized = 0;

+}

+

diff --git a/src/lib/kStuff/kLdr/kLdrA-os2.asm b/src/lib/kStuff/kLdr/kLdrA-os2.asm
new file mode 100644
index 0000000..cc9784a
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrA-os2.asm
@@ -0,0 +1,66 @@
+; $Id: kLdrA-os2.asm 29 2009-07-01 20:30:29Z bird $

+;; @file

+; kLdr - The Dynamic Loader, OS/2 Assembly Helpers.

+;

+

+;

+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>

+;

+; Permission is hereby granted, free of charge, to any person

+; obtaining a copy of this software and associated documentation

+; files (the "Software"), to deal in the Software without

+; restriction, including without limitation the rights to use,

+; copy, modify, merge, publish, distribute, sublicense, and/or sell

+; copies of the Software, and to permit persons to whom the

+; Software is furnished to do so, subject to the following

+; conditions:

+;

+; The above copyright notice and this permission notice shall be

+; included in all copies or substantial portions of the Software.

+;

+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

+; OTHER DEALINGS IN THE SOFTWARE.

+;

+

+segment TEXT32 public align=16 CLASS=CODE use32

+

+;

+; _DLL_InitTerm

+;

+..start:

+extern _DLL_InitTerm

+    jmp _DLL_InitTerm

+

+

+;

+; kLdrLoadExe wrapper which loads the bootstrap stack.

+;

+global _kLdrDyldLoadExe

+_kLdrDyldLoadExe:

+    push    ebp

+    mov     ebp, esp

+

+    ; switch stack.

+;    extern _abStack

+;    lea     esp, [_abStack + 8192 - 4]

+    push    dword [ebp + 8 + 20]

+    push    dword [ebp + 8 + 16]

+    push    dword [ebp + 8 + 12]

+    push    dword [ebp + 8 +  8]

+

+    ; call worker on the new stack.

+    extern  _kldrDyldLoadExe

+    call    _kldrDyldLoadExe

+

+    ; we shouldn't return!

+we_re_not_supposed_to_get_here:

+    int3

+    int3

+    jmp short we_re_not_supposed_to_get_here

+

diff --git a/src/lib/kStuff/kLdr/kLdrDyld.c b/src/lib/kStuff/kLdr/kLdrDyld.c
new file mode 100644
index 0000000..9ff3dd8
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrDyld.c
@@ -0,0 +1,1509 @@
+/* $Id: kLdrDyld.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - The Dynamic Loader.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kLdr.h>
+#include "kLdrInternal.h"
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** @def KLDRDYLD_STRICT
+ * Define KLDRDYLD_STRICT to enabled strict checks in kLdrDyld. */
+#define KLDRDYLD_STRICT 1
+
+/** @def KLDRDYLD_ASSERT
+ * Assert that an expression is true when KLDRDYLD_STRICT is defined.
+ */
+#ifdef KLDRDYLD_STRICT
+# define KLDRDYLD_ASSERT(expr)  kHlpAssert(expr)
+#else
+# define KLDRDYLD_ASSERT(expr)  do {} while (0)
+#endif
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** Pointer to the executable module.
+ * (This is exported, so no prefix.) */
+PKLDRDYLDMOD    kLdrDyldExe = NULL;
+/** Pointer to the head module (the executable).
+ * (This is exported, so no prefix.) */
+PKLDRDYLDMOD    kLdrDyldHead = NULL;
+/** Pointer to the tail module.
+ * (This is exported, so no prefix.) */
+PKLDRDYLDMOD    kLdrDyldTail = NULL;
+/** Pointer to the head module of the initialization list.
+ * The outermost load call will pop elements from this list in LIFO order (i.e.
+ * from the tail). The list is only used during non-recursive initialization
+ * and may therefore share the pNext/pPrev members with the termination list
+ * since we don't push a module onto the termination list untill it has been
+ * successfully initialized. */
+PKLDRDYLDMOD    g_pkLdrDyldInitHead;
+/** Pointer to the tail module of the initalization list.*/
+PKLDRDYLDMOD    g_pkLdrDyldInitTail;
+/** Pointer to the head module of the termination order list.
+ * This is a LIFO just like the the init list. */
+PKLDRDYLDMOD    g_pkLdrDyldTermHead;
+/** Pointer to the tail module of the termination order list. */
+PKLDRDYLDMOD    g_pkLdrDyldTermTail;
+/** Pointer to the head module of the bind order list.
+ * The modules in this list makes up the global namespace used when binding symbol unix fashion. */
+PKLDRDYLDMOD    g_pkLdrDyldBindHead;
+/** Pointer to the tail module of the bind order list. */
+PKLDRDYLDMOD    g_pkLdrDyldBindTail;
+
+/** Flag indicating bootstrap time.
+ * When set the error behaviour changes. Any kind of serious failure
+ * is fatal and will terminate the process. */
+int             g_fBootstrapping;
+/** The global error buffer. */
+char            g_szkLdrDyldError[1024];
+
+/** The default flags. */
+KU32            kLdrDyldFlags = 0;
+/** The default search method. */
+KLDRDYLDSEARCH  kLdrDyldSearch = KLDRDYLD_SEARCH_HOST;
+
+
+/** @name The main stack.
+ * @{ */
+/** Indicates that the other MainStack globals have been filled in. */
+unsigned        g_fkLdrDyldDoneMainStack = 0;
+/** Whether the stack was allocated seperatly or was part of the executable. */
+unsigned        g_fkLdrDyldMainStackAllocated = 0;
+/** Pointer to the main stack object. */
+void           *g_pvkLdrDyldMainStack = NULL;
+/** The size of the main stack object. */
+KSIZE           g_cbkLdrDyldMainStack = 0;
+/** @} */
+
+
+/** The load stack.
+ * This contains frames with modules affected by active loads.
+ *
+ * Each kLdrDyldLoad and kLdrDyldLoadExe call will create a new stack frame containing
+ * all the modules involved in the operation. The modules will be ordered in recursive
+ * init order within the frame.
+ */
+static PPKLDRDYLDMOD    g_papStackMods;
+/** The number of used entries in the g_papStackMods array. */
+static KU32             g_cStackMods;
+/** The number of entries allocated for the g_papStackMods array. */
+static KU32             g_cStackModsAllocated;
+/** Number of active load calls. */
+static KU32             g_cActiveLoadCalls;
+/** Number of active unload calls. */
+static KU32             g_cActiveUnloadCalls;
+/** Total number of load calls. */
+static KU32             g_cTotalLoadCalls;
+/** Total mumber of unload calls. */
+static KU32             g_cTotalUnloadCalls;
+/** Boolean flag indicating that GC is active. */
+static KU32             g_fActiveGC;
+
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+/** @name API worker routines.
+ * @internal
+ * @{ */
+void       kldrDyldDoLoadExeStackSwitch(PKLDRDYLDMOD pExe, void *pvStack, KSIZE cbStack);
+static int kldrDyldDoLoad(const char *pszDll, const char *pszPrefix, const char *pszSuffix, KLDRDYLDSEARCH enmSearch,
+                          unsigned fFlags, PPKLDRDYLDMOD ppMod, char *pszErr, KSIZE cchErr);
+static int kldrDyldDoLoad2(PKLDRDYLDMOD pLoadedMod, const char *pszPrefix, const char *pszSuffix,
+                           KLDRDYLDSEARCH enmSearch, unsigned fFlags);
+static int kldrDyldDoLoadPrerequisites(PKLDRDYLDMOD pMod, const char *pszPrefix, const char *pszSuffix,
+                                       KLDRDYLDSEARCH enmSearch, unsigned fFlags);
+static int kldrDyldDoUnload(PKLDRDYLDMOD pMod);
+static int kldrDyldDoFindByName(const char *pszDll, const char *pszPrefix, const char *pszSuffix, KLDRDYLDSEARCH enmSearch,
+                              unsigned fFlags, PPKLDRDYLDMOD ppMod);
+static int kldrDyldDoFindByAddress(KUPTR Address, PPKLDRDYLDMOD ppMod, KU32 *piSegment, KUPTR *poffSegment);
+static int kldrDyldDoGetName(PKLDRDYLDMOD pMod, char *pszName, KSIZE cchName);
+static int kldrDyldDoGetFilename(PKLDRDYLDMOD pMod, char *pszFilename, KSIZE cchFilename);
+static int kldrDyldDoQuerySymbol(PKLDRDYLDMOD pMod, KU32 uSymbolOrdinal, const char *pszSymbolName, KUPTR *pValue, KU32 *pfKind);
+/** @} */
+
+/** @name Misc load/unload workers
+ * @internal
+ * @{
+ */
+static void         kldrDyldDoModuleTerminationAndGarabageCollection(void);
+/** @} */
+
+/** @name The load stack.
+ * @internal
+ * @{ */
+static KU32         kldrDyldStackNewFrame(PKLDRDYLDMOD pMod);
+static int          kldrDyldStackAddModule(PKLDRDYLDMOD pMod);
+static int          kldrDyldStackFrameCompleted(void);
+static void         kldrDyldStackCleanupOne(PKLDRDYLDMOD pMod, int rc);
+static void         kldrDyldStackDropFrame(KU32 iLoad1st, KU32 iLoadEnd, int rc);
+/** @} */
+
+static int          kldrDyldCopyError(int rc, char *pszErr, KSIZE cchErr);
+
+
+
+/**
+ * Initialize the dynamic loader.
+ */
+int kldrDyldInit(void)
+{
+    kLdrDyldHead = kLdrDyldTail = NULL;
+    g_pkLdrDyldTermHead = g_pkLdrDyldTermTail = NULL;
+    g_pkLdrDyldBindHead = g_pkLdrDyldBindTail = NULL;
+    kLdrDyldFlags = 0;
+    g_szkLdrDyldError[0] = '\0';
+
+    g_fkLdrDyldDoneMainStack = 0;
+    g_fkLdrDyldMainStackAllocated = 0;
+    g_pvkLdrDyldMainStack = NULL;
+    g_cbkLdrDyldMainStack = 0;
+
+    return kldrDyldFindInit();
+}
+
+
+/**
+ * Terminate the dynamic loader.
+ */
+void kldrDyldTerm(void)
+{
+
+}
+
+
+/**
+ * Bootstrap an executable.
+ *
+ * This is called from the executable stub to replace the stub and run the
+ * executable specified in the argument package.
+ *
+ * Since this is boostrap time there isn't anything to return to. So, instead
+ * the process will be terminated upon failure.
+ *
+ * We also have to keep in mind that this function is called on a small, small,
+ * stack and therefore any kind of large stack objects or deep recursions must
+ * be avoided. Since loading the executable will involve more or less all
+ * operations in the loader, this restriction really applies everywhere.
+ *
+ * @param   pArgs       Pointer to the argument package residing in the executable stub.
+ * @param   pvOS        OS specific argument.
+ */
+#ifndef __OS2__  /* kLdrDyldLoadExe is implemented in assembly on OS/2. */
+void kLdrDyldLoadExe(PCKLDREXEARGS pArgs, void *pvOS)
+#else
+void kldrDyldLoadExe(PCKLDREXEARGS pArgs, void *pvOS)
+#endif
+{
+    void *pvStack;
+    KSIZE  cbStack;
+    PKLDRDYLDMOD pExe;
+    int rc;
+
+    /*
+     * Indicate that we're boostrapping and ensure that initialization was successful.
+     */
+    g_fBootstrapping = 1;
+    rc = kldrInit();
+    if (rc)
+        kldrDyldFailure(rc, "Init failure, rc=%d", rc);
+
+    /*
+     * Validate the argument package.
+     */
+    if (pArgs->fFlags & ~(  KLDRYDLD_LOAD_FLAGS_GLOBAL_SYMBOLS
+                          | KLDRYDLD_LOAD_FLAGS_DEEP_SYMBOLS
+                          | KLDRDYLD_LOAD_FLAGS_RECURSIVE_INIT
+                          | KLDRYDLD_LOAD_FLAGS_SPECIFIC_MODULE))
+        kldrDyldFailure(KERR_INVALID_PARAMETER, "Bad fFlags=%#x", pArgs->fFlags);
+    if (    pArgs->enmSearch <= KLDRDYLD_SEARCH_INVALID
+        ||  pArgs->enmSearch >= KLDRDYLD_SEARCH_END)
+        kldrDyldFailure(KERR_INVALID_PARAMETER, "Bad enmSearch=%d", pArgs->enmSearch);
+
+    /*
+     * Set defaults.
+     */
+    kLdrDyldFlags |= (pArgs->fFlags & KLDRDYLD_LOAD_FLAGS_RECURSIVE_INIT);
+    kLdrDyldSearch = pArgs->enmSearch;
+
+    /** @todo make sense of this default prefix/suffix stuff. */
+    if (pArgs->szDefPrefix[0] != '\0')
+        kHlpMemCopy(kLdrDyldDefPrefix, pArgs->szDefPrefix, K_MIN(sizeof(pArgs->szDefPrefix), sizeof(kLdrDyldDefPrefix)));
+    if (pArgs->szDefSuffix[0] != '\0')
+        kHlpMemCopy(kLdrDyldDefSuffix, pArgs->szDefSuffix, K_MIN(sizeof(pArgs->szDefSuffix), sizeof(kLdrDyldDefSuffix)));
+
+    /** @todo append that path to the one for the specified search method. */
+    /** @todo create a function for doing this, an exposed api preferably. */
+    /* append path */
+    cbStack = sizeof(kLdrDyldLibraryPath) - kHlpStrLen(kLdrDyldLibraryPath); /* borrow cbStack for a itty bit. */
+    kHlpMemCopy(kLdrDyldLibraryPath, pArgs->szLibPath, K_MIN(sizeof(pArgs->szLibPath), cbStack));
+    kLdrDyldLibraryPath[sizeof(kLdrDyldLibraryPath) - 1] = '\0';
+
+    /*
+     * Make sure we own the loader semaphore (necessary for init).
+     */
+    rc = kLdrDyldSemRequest();
+    if (rc)
+        kldrDyldFailure(rc, "Sem req. failure, rc=%d", rc);
+
+    /*
+     * Open and map the executable module before we join paths with kLdrDyldLoad().
+     */
+    rc = kldrDyldFindNewModule(pArgs->szExecutable, NULL, NULL, pArgs->enmSearch,
+                               pArgs->fFlags | KLDRDYLD_LOAD_FLAGS_EXECUTABLE, &pExe);
+    if (rc)
+        kldrDyldFailure(rc, "Can't find/open the executable '%s', rc=%d", pArgs->szExecutable, rc);
+    rc = kldrDyldModMap(pExe);
+    if (rc)
+        kldrDyldFailure(rc, "Failed to map the executable '%s', rc=%d", pExe->pMod->pszFilename, rc);
+
+    kLdrDyldExe = pExe;
+
+    /*
+     * Query the stack and go to OS specific code to
+     * setup and switch stack. The OS specific code will call us
+     * back at kldrDyldDoLoadExe.
+     */
+    rc = kldrDyldModGetMainStack(pExe, &pvStack, &cbStack);
+    if (rc)
+        kldrDyldFailure(rc, "Failed to map the executable '%s', rc=%d", pExe->pMod->pszFilename, rc);
+    kldrDyldDoLoadExeStackSwitch(pExe, pvStack, cbStack);
+    kldrDyldFailure(-1, "Failed to setup the stack for '%s'.", pExe->pMod->pszFilename);
+}
+
+
+/**
+ * Loads a module into the current process.
+ *
+ * @returns 0 on success, non-zero native OS status code or kLdr status code on failure.
+ * @param   pszDll          The name of the dll to open.
+ * @param   pszPrefix       Prefix to use when searching.
+ * @param   pszSuffix       Suffix to use when searching.
+ * @param   enmSearch       Method to use when locating the module and any modules it may depend on.
+ * @param   fFlags          Flags, a combintation of the KLDRYDLD_LOAD_FLAGS_* \#defines.
+ * @param   phMod           Where to store the handle to the loaded module.
+ * @param   pszErr          Where to store extended error information. (optional)
+ * @param   cchErr          The size of the buffer pointed to by pszErr.
+ */
+int     kLdrDyldLoad(const char *pszDll, const char *pszPrefix, const char *pszSuffix, KLDRDYLDSEARCH enmSearch,
+                     unsigned fFlags, PHKLDRMOD phMod, char *pszErr, KSIZE cchErr)
+{
+    int rc;
+
+    /* validate arguments and initialize return values. */
+    if (pszErr && cchErr)
+        *pszErr = '\0';
+    *phMod = NIL_HKLDRMOD;
+    K_VALIDATE_STRING(pszDll);
+    K_VALIDATE_OPTIONAL_STRING(pszPrefix);
+    K_VALIDATE_OPTIONAL_STRING(pszSuffix);
+    K_VALIDATE_ENUM(enmSearch, KLDRDYLD_SEARCH);
+    K_VALIDATE_OPTIONAL_BUFFER(pszErr, cchErr);
+
+    /* get the semaphore and do the job. */
+    rc = kLdrDyldSemRequest();
+    if (!rc)
+    {
+        PKLDRDYLDMOD pMod = NULL;
+        g_cTotalLoadCalls++;
+        g_cActiveLoadCalls++;
+        rc = kldrDyldDoLoad(pszDll, pszPrefix, pszSuffix, enmSearch, fFlags, &pMod, pszErr, cchErr);
+        g_cActiveLoadCalls--;
+        kldrDyldDoModuleTerminationAndGarabageCollection();
+        kLdrDyldSemRelease();
+        *phMod = pMod ? pMod->hMod : NIL_HKLDRMOD;
+    }
+    return rc;
+}
+
+
+/**
+ * Unloads a module loaded by kLdrDyldLoad.
+ *
+ * @returns 0 on success, non-zero native OS status code or kLdr status code on failure.
+ * @param   hMod            Module handle.
+ */
+int     kLdrDyldUnload(HKLDRMOD hMod)
+{
+    int rc;
+
+    /* validate */
+    KLDRDYLD_VALIDATE_HKLDRMOD(hMod);
+
+    /* get sem & do work */
+    rc = kLdrDyldSemRequest();
+    if (!rc)
+    {
+        g_cTotalUnloadCalls++;
+        g_cActiveUnloadCalls++;
+        rc = kldrDyldDoUnload(hMod);
+        g_cActiveUnloadCalls--;
+        kldrDyldDoModuleTerminationAndGarabageCollection();
+        kLdrDyldSemRelease();
+    }
+    return rc;
+}
+
+
+/**
+ * Finds a module by name or filename.
+ *
+ * This call does not increase any reference counters and must not be
+ * paired with kLdrDyldUnload() like kLdrDyldLoad().
+ *
+ * @returns 0 on success.
+ * @returns KLDR_ERR_MODULE_NOT_FOUND or some I/O error on failure.
+ * @param   pszDll          The name of the dll to look for.
+ * @param   pszPrefix       Prefix than can be used when searching.
+ * @param   pszSuffix       Suffix than can be used when searching.
+ * @param   enmSearch       Method to use when locating the module.
+ * @param   fFlags          Flags, a combintation of the KLDRYDLD_LOAD_FLAGS_* \#defines.
+ * @param   phMod           Where to store the handle of the module on success.
+ */
+int     kLdrDyldFindByName(const char *pszDll, const char *pszPrefix, const char *pszSuffix, KLDRDYLDSEARCH enmSearch,
+                           unsigned fFlags, PHKLDRMOD phMod)
+{
+    int rc;
+
+    /* validate & initialize */
+    *phMod = NIL_HKLDRMOD;
+    K_VALIDATE_STRING(pszDll);
+
+    /* get sem & do work */
+    rc = kLdrDyldSemRequest();
+    if (!rc)
+    {
+        PKLDRDYLDMOD pMod = NULL;
+        rc = kldrDyldDoFindByName(pszDll, pszPrefix, pszSuffix, enmSearch, fFlags, &pMod);
+        kLdrDyldSemRelease();
+        *phMod = pMod ? pMod->hMod : NIL_HKLDRMOD;
+    }
+    return rc;
+}
+
+
+/**
+ * Finds a module by address.
+ *
+ * This call does not increase any reference counters and must not be
+ * paired with kLdrDyldUnload() like kLdrDyldLoad().
+ *
+ * @returns 0 on success.
+ * @returns KLDR_ERR_MODULE_NOT_FOUND on failure.
+ * @param   Address         The address believed to be within some module.
+ * @param   phMod           Where to store the module handle on success.
+ * @param   piSegment       Where to store the segment number. (optional)
+ * @param   poffSegment     Where to store the offset into the segment. (optional)
+ */
+int     kLdrDyldFindByAddress(KUPTR Address, PHKLDRMOD phMod, KU32 *piSegment, KUPTR *poffSegment)
+{
+    int rc;
+
+    /* validate & initialize */
+    *phMod = NIL_HKLDRMOD;
+    if (piSegment)
+        *piSegment = ~(KU32)0;
+    if (poffSegment)
+        *poffSegment = ~(KUPTR)0;
+
+    /* get sem & do work */
+    rc = kLdrDyldSemRequest();
+    if (!rc)
+    {
+        PKLDRDYLDMOD pMod = NULL;
+        rc = kldrDyldDoFindByAddress(Address, &pMod, piSegment, poffSegment);
+        kLdrDyldSemRelease();
+        *phMod = pMod ? pMod->hMod : NIL_HKLDRMOD;
+    }
+    return rc;
+}
+
+
+/**
+ * Gets the module name.
+ *
+ * @returns 0 on success and pszName filled with the name.
+ * @returns KERR_INVALID_HANDLE or KERR_BUFFER_OVERFLOW on failure.
+ * @param   hMod        The module handle.
+ * @param   pszName     Where to put the name.
+ * @param   cchName     The size of the name buffer.
+ * @see kLdrDyldGetFilename
+ */
+int     kLdrDyldGetName(HKLDRMOD hMod, char *pszName, KSIZE cchName)
+{
+    int rc;
+
+    /* validate */
+    if (pszName && cchName)
+        *pszName = '\0';
+    KLDRDYLD_VALIDATE_HKLDRMOD(hMod);
+    K_VALIDATE_BUFFER(pszName, cchName);
+
+    /* get sem & do work */
+    rc = kLdrDyldSemRequest();
+    if (!rc)
+    {
+        rc = kldrDyldDoGetName(hMod, pszName, cchName);
+        kLdrDyldSemRelease();
+    }
+    return rc;
+}
+
+
+/**
+ * Gets the module filename.
+ *
+ * @returns 0 on success and pszFilename filled with the name.
+ * @returns KERR_INVALID_HANDLE or KERR_BUFFER_OVERFLOW on failure.
+ * @param   hMod            The module handle.
+ * @param   pszFilename     Where to put the filename.
+ * @param   cchFilename     The size of the filename buffer.
+ * @see kLdrDyldGetName
+ */
+int     kLdrDyldGetFilename(HKLDRMOD hMod, char *pszFilename, KSIZE cchFilename)
+{
+    int rc;
+
+    /* validate & initialize */
+    if  (pszFilename && cchFilename);
+        *pszFilename = '\0';
+    KLDRDYLD_VALIDATE_HKLDRMOD(hMod);
+    K_VALIDATE_BUFFER(pszFilename, cchFilename);
+
+    /* get sem & do work */
+    rc = kLdrDyldSemRequest();
+    if (!rc)
+    {
+        rc = kldrDyldDoGetFilename(hMod, pszFilename, cchFilename);
+        kLdrDyldSemRelease();
+    }
+    return rc;
+}
+
+
+/**
+ * Queries the value and type of a symbol.
+ *
+ * @returns 0 on success and pValue and pfKind set.
+ * @returns KERR_INVALID_HANDLE or KLDR_ERR_SYMBOL_NOT_FOUND on failure.
+ * @param   hMod                The module handle.
+ * @param   uSymbolOrdinal      The symbol ordinal. This is ignored if pszSymbolName is non-zero.
+ * @param   pszSymbolName       The symbol name.
+ * @param   pszSymbolVersion    The symbol version. Optional.
+ * @param   pValue              Where to put the symbol value. Optional if pfKind is non-zero.
+ * @param   pfKind              Where to put the symbol kind flags. Optional if pValue is non-zero.
+ */
+int     kLdrDyldQuerySymbol(HKLDRMOD hMod, KU32 uSymbolOrdinal, const char *pszSymbolName,
+                            const char *pszSymbolVersion, KUPTR *pValue, KU32 *pfKind)
+{
+    int rc;
+
+    /* validate & initialize */
+    if (pfKind)
+        *pfKind = 0;
+    if (pValue)
+        *pValue = 0;
+    if (!pfKind && !pValue)
+        return KERR_INVALID_PARAMETER;
+    KLDRDYLD_VALIDATE_HKLDRMOD(hMod);
+    K_VALIDATE_OPTIONAL_STRING(pszSymbolName);
+
+    /* get sem & do work */
+    rc = kLdrDyldSemRequest();
+    if (!rc)
+    {
+        rc = kldrDyldDoQuerySymbol(hMod, uSymbolOrdinal, pszSymbolName, pValue, pfKind);
+        kLdrDyldSemRelease();
+    }
+    return rc;
+}
+
+
+/**
+ * Worker kLdrDoLoadExe().
+ * Used after we've switch to the final process stack.
+ *
+ * @param   pExe    The executable module.
+ * @internal
+ */
+void kldrDyldDoLoadExe(PKLDRDYLDMOD pExe)
+{
+    int rc;
+
+    /*
+     * Load the executable module with its prerequisites and initialize them.
+     */
+    g_cActiveLoadCalls++;
+    rc = kldrDyldDoLoad2(pExe, NULL, NULL, kLdrDyldSearch, kLdrDyldFlags | KLDRDYLD_LOAD_FLAGS_EXECUTABLE);
+    if (rc)
+        kldrDyldFailure(rc, "load 2 failed for '%s', rc=%d", pExe->pMod->pszFilename);
+    g_cActiveLoadCalls--;
+    kldrDyldDoModuleTerminationAndGarabageCollection();
+
+    /*
+     * Invoke the executable entry point.
+     */
+    kldrDyldModStartExe(pExe);
+    kldrDyldFailure(-1, "failed to invoke main!");
+}
+
+
+/**
+ * Worker for kLdrDyldLoad() and helper for kLdrDyldLoadExe().
+ * @internal
+ */
+static int kldrDyldDoLoad(const char *pszDll, const char *pszPrefix, const char *pszSuffix, KLDRDYLDSEARCH enmSearch,
+                          unsigned fFlags, PPKLDRDYLDMOD ppMod, char *pszErr, KSIZE cchErr)
+{
+    int rc;
+
+    /*
+     * Try find the module among the ones that's already loaded.
+     */
+    rc = kldrDyldFindExistingModule(pszDll, pszPrefix, pszSuffix, enmSearch, fFlags, ppMod);
+    if (!rc)
+    {
+        switch ((*ppMod)->enmState)
+        {
+            /*
+             * Prerequisites are ok, so nothing to do really.
+             */
+            case KLDRSTATE_GOOD:
+            case KLDRSTATE_INITIALIZING:
+                return kldrDyldModDynamicLoad(*ppMod);
+
+            /*
+             * The module can't be loaded because it failed to initialize.
+             */
+            case KLDRSTATE_INITIALIZATION_FAILED:
+                return KLDR_ERR_MODULE_INIT_FAILED_ALREADY;
+
+            /*
+             * Prerequisites needs loading / reattaching and the module
+             * (may depending on fFlags) needs to be initialized.
+             */
+            case KLDRSTATE_PENDING_INITIALIZATION:
+                break;
+
+            /*
+             * Prerequisites needs to be loaded again
+             */
+            case KLDRSTATE_PENDING_TERMINATION:
+                break;
+
+            /*
+             * The module has been terminated so it need to be reloaded, have it's
+             * prereqs loaded, fixed up and initialized before we can use it again.
+             */
+            case KLDRSTATE_PENDING_GC:
+                rc = kldrDyldModReload(*ppMod);
+                if (rc)
+                    return kldrDyldCopyError(rc, pszErr, cchErr);
+                break;
+
+            /*
+             * Forget it, we don't know how to deal with re-initialization here.
+             */
+            case KLDRSTATE_TERMINATING:
+                KLDRDYLD_ASSERT(!"KLDR_ERR_MODULE_TERMINATING");
+                return KLDR_ERR_MODULE_TERMINATING;
+
+            /*
+             * Invalid state.
+             */
+            default:
+                KLDRDYLD_ASSERT(!"invalid state");
+                break;
+        }
+    }
+    else
+    {
+        /*
+         * We'll have to load it from file.
+         */
+        rc = kldrDyldFindNewModule(pszDll, pszPrefix, pszSuffix, enmSearch, fFlags, ppMod);
+        if (rc)
+            return kldrDyldCopyError(rc, pszErr, cchErr);
+        rc = kldrDyldModMap(*ppMod);
+    }
+
+    /*
+     * Join cause with kLdrDyldLoadExe.
+     */
+    if (!rc)
+        rc = kldrDyldDoLoad2(*ppMod, pszPrefix, pszSuffix, enmSearch, fFlags);
+    else
+        kldrDyldStackCleanupOne(*ppMod, rc);
+
+    /*
+     * Copy any error or warning to the error buffer.
+     */
+    return kldrDyldCopyError(rc, pszErr, cchErr);
+}
+
+
+/**
+ * 2nd half of kLdrDyldLoad() and kLdrDyldLoadExe().
+ *
+ * @internal
+ */
+static int kldrDyldDoLoad2(PKLDRDYLDMOD pLoadedMod, const char *pszPrefix, const char *pszSuffix,
+                           KLDRDYLDSEARCH enmSearch, unsigned fFlags)
+{
+    /*
+     * Load prerequisites.
+     */
+    KU32 i;
+    KU32 iLoad1st = kldrDyldStackNewFrame(pLoadedMod);
+    int rc = kldrDyldDoLoadPrerequisites(pLoadedMod, pszPrefix, pszSuffix, enmSearch, fFlags);
+    KU32 iLoadEnd = kldrDyldStackFrameCompleted();
+    if (rc)
+    {
+        kldrDyldModAddRef(pLoadedMod);
+        kldrDyldStackCleanupOne(pLoadedMod, rc); /* in case it didn't get pushed onto the stack. */
+        kldrDyldModDeref(pLoadedMod);
+    }
+
+    /*
+     * Apply fixups.
+     */
+    for (i = iLoad1st; !rc && i < iLoadEnd; i++)
+    {
+        PKLDRDYLDMOD pMod = g_papStackMods[i];
+        if (    pMod->enmState == KLDRSTATE_LOADED_PREREQUISITES
+            ||  pMod->enmState == KLDRSTATE_RELOADED_LOADED_PREREQUISITES)
+            rc = kldrDyldModFixup(pMod);
+    }
+
+    /*
+     * Advance fixed up module onto initialization.
+     */
+    for (i = iLoad1st; !rc && i < iLoadEnd; i++)
+    {
+        PKLDRDYLDMOD pMod = g_papStackMods[i];
+        if (    pMod->enmState == KLDRSTATE_FIXED_UP
+            ||  pMod->enmState == KLDRSTATE_RELOADED_FIXED_UP)
+            pMod->enmState = KLDRSTATE_PENDING_INITIALIZATION;
+        KLDRDYLD_ASSERT(    pMod->enmState == KLDRSTATE_PENDING_INITIALIZATION
+                        ||  pMod->enmState == KLDRSTATE_GOOD);
+    }
+
+    /*
+     * Call the initializers if we're loading in recursive mode or
+     * if we're the outermost load call.
+     */
+    if (fFlags & KLDRDYLD_LOAD_FLAGS_RECURSIVE_INIT)
+    {
+        for (i = iLoad1st; !rc && i < iLoadEnd; i++)
+        {
+            PKLDRDYLDMOD pMod = g_papStackMods[i];
+            if (pMod->enmState == KLDRSTATE_PENDING_INITIALIZATION)
+                rc = kldrDyldModCallInit(pMod);
+            else if (pMod->enmState == KLDRSTATE_INITIALIZATION_FAILED)
+                rc = KLDR_ERR_PREREQUISITE_MODULE_INIT_FAILED_ALREADY;
+            else
+                KLDRDYLD_ASSERT(g_papStackMods[i]->enmState == KLDRSTATE_GOOD);
+        }
+#ifdef KLDRDYLD_STRICT
+        for (i = iLoad1st; !rc && i < iLoadEnd; i++)
+            KLDRDYLD_ASSERT(g_papStackMods[i]->enmState == KLDRSTATE_GOOD);
+#endif
+    }
+    else if (g_cActiveLoadCalls <= 1)
+    {
+        while (!rc && g_pkLdrDyldInitHead)
+        {
+            PKLDRDYLDMOD pMod = g_pkLdrDyldInitHead;
+            g_pkLdrDyldInitHead = pMod->InitTerm.pNext;
+            if (pMod->InitTerm.pNext)
+                pMod->InitTerm.pNext->InitTerm.pPrev = NULL;
+            else
+                g_pkLdrDyldInitTail = NULL;
+            pMod->fInitList = 0;
+            rc = kldrDyldModCallInit(pMod);
+        }
+    }
+
+    /*
+     * Complete the load by incrementing the dynamic load count of the
+     * requested module (return handle is already set).
+     */
+    if (!rc)
+    {
+        if (fFlags & KLDRDYLD_LOAD_FLAGS_EXECUTABLE)
+        {
+            pLoadedMod->cDepRefs++; /* just make it stick. */
+            pLoadedMod->cRefs++;
+        }
+        else
+            rc = kldrDyldModDynamicLoad(pLoadedMod);
+    }
+
+    kldrDyldStackDropFrame(iLoad1st, iLoadEnd, rc);
+    return rc;
+}
+
+
+/**
+ * kldrDyldDoLoad() helper which will load prerequisites and
+ * build the initialization array / list.
+ *
+ * @returns 0 on success, non-zero error code on failure.
+ * @param   pMod            The module to start at.
+ * @param   pszPrefix       Prefix to use when searching.
+ * @param   pszSuffix       Suffix to use when searching.
+ * @param   enmSearch       Method to use when locating the module and any modules it may depend on.
+ * @param   fFlags          Flags, a combintation of the KLDRYDLD_LOAD_FLAGS_* \#defines.
+ */
+static int kldrDyldDoLoadPrerequisites(PKLDRDYLDMOD pMod, const char *pszPrefix, const char *pszSuffix,
+                                       KLDRDYLDSEARCH enmSearch, unsigned fFlags)
+{
+    static struct
+    {
+        /** The module. */
+        PKLDRDYLDMOD    pMod;
+        /** The number of prerequisite modules left to process.
+         * This starts at ~0U to inidicate that we need to load/check prerequisistes. */
+        unsigned        cLeft;
+    }               s_aEntries[64];
+    unsigned        cEntries;
+    int             rc = 0;
+
+    /* Prerequisites are always global and they just aren't executables. */
+    fFlags &= ~(KLDRYDLD_LOAD_FLAGS_SPECIFIC_MODULE | KLDRDYLD_LOAD_FLAGS_EXECUTABLE);
+
+    /* push the first entry. */
+    s_aEntries[0].pMod = pMod;
+    s_aEntries[0].cLeft = ~0U;
+    cEntries = 1;
+
+    /*
+     * The recursion loop.
+     */
+    while (!rc && cEntries > 0)
+    {
+        const unsigned i = cEntries - 1;
+        pMod = s_aEntries[i].pMod;
+        if (s_aEntries[i].cLeft == ~0U)
+        {
+            /*
+             * Load prerequisite modules.
+             */
+            switch (pMod->enmState)
+            {
+                /*
+                 * Load immediate prerequisite modules and push the ones needing
+                 * attention onto the stack.
+                 */
+                case KLDRSTATE_MAPPED:
+                case KLDRSTATE_RELOADED:
+                case KLDRSTATE_PENDING_TERMINATION:
+                    rc = kldrDyldModLoadPrerequisites(pMod, pszPrefix, pszSuffix, enmSearch, fFlags);
+                    KLDRDYLD_ASSERT(    pMod->enmState == KLDRSTATE_GOOD
+                                    ||  pMod->enmState == KLDRSTATE_RELOADED_LOADED_PREREQUISITES
+                                    ||  pMod->enmState == KLDRSTATE_LOADED_PREREQUISITES
+                                    ||  rc);
+                    if (!rc)
+                        s_aEntries[i].cLeft = pMod->cPrereqs;
+                    break;
+
+                /*
+                 * Check its prerequisite modules the first time around.
+                 */
+                case KLDRSTATE_PENDING_INITIALIZATION:
+                    if (pMod->fAlreadySeen)
+                        break;
+                    pMod->fAlreadySeen = 1;
+                    s_aEntries[i].cLeft = pMod->cPrereqs;
+                    break;
+
+                /*
+                 * These are ok.
+                 */
+                case KLDRSTATE_LOADED_PREREQUISITES:
+                case KLDRSTATE_RELOADED_LOADED_PREREQUISITES:
+                case KLDRSTATE_INITIALIZING:
+                case KLDRSTATE_GOOD:
+                    s_aEntries[i].cLeft = 0;
+                    break;
+
+                /*
+                 * All other stats are invalid.
+                 */
+                default:
+                    KLDRDYLD_ASSERT(!"invalid state");
+                    break;
+            }
+        }
+        else if (s_aEntries[i].cLeft > 0)
+        {
+            /*
+             * Recurse down into the next prereq.
+             */
+            KLDRDYLD_ASSERT(s_aEntries[i].cLeft <= pMod->cPrereqs);
+            if (cEntries < sizeof(s_aEntries) / sizeof(s_aEntries[0]))
+            {
+                s_aEntries[cEntries].cLeft = ~(KU32)0;
+                s_aEntries[cEntries].pMod = pMod->papPrereqs[pMod->cPrereqs - s_aEntries[i].cLeft];
+                s_aEntries[i].cLeft--;
+                cEntries++;
+            }
+            else
+                rc = KLDR_ERR_PREREQUISITE_RECURSED_TOO_DEEPLY;
+        }
+        else
+        {
+            /*
+             * We're done with this module, record it for init/cleanup.
+             */
+            cEntries--;
+            if (pMod->enmState != KLDRSTATE_GOOD)
+            {
+                kldrDyldStackAddModule(pMod);
+                if  (   !(fFlags & KLDRDYLD_LOAD_FLAGS_RECURSIVE_INIT)
+                     && !pMod->fInitList)
+                {
+                    pMod->fInitList = 1;
+                    pMod->InitTerm.pNext = NULL;
+                    pMod->InitTerm.pPrev = g_pkLdrDyldInitTail;
+                    if (g_pkLdrDyldInitTail)
+                        g_pkLdrDyldInitTail->InitTerm.pNext = pMod;
+                    else
+                        g_pkLdrDyldInitHead = pMod;
+                    g_pkLdrDyldInitTail = pMod;
+                }
+            }
+        }
+    }
+
+    return rc;
+}
+
+
+/**
+ * Gets prerequisite module.
+ *
+ * This will try load the requested module if necessary, returning it in the MAPPED state.
+ *
+ * @returns 0 on success.
+ * @returns KLDR_ERR_MODULE_NOT_FOUND or I/O error on failure.
+ * @param   pszDll          The name of the dll to look for.
+ * @param   pszPrefix    Prefix than can be used when searching.
+ * @param   pszSuffix    Suffix than can be used when searching.
+ * @param   enmSearch       Method to use when locating the module.
+ * @param   fFlags          Flags, a combintation of the KLDRYDLD_LOAD_FLAGS_* \#defines.
+ * @param   pDep            The depentant module.
+ * @param   ppMod           Where to put the module we get.
+ */
+int kldrDyldGetPrerequisite(const char *pszDll, const char *pszPrefix, const char *pszSuffix, KLDRDYLDSEARCH enmSearch,
+                            unsigned fFlags, PKLDRDYLDMOD pDep, PPKLDRDYLDMOD ppMod)
+{
+    int             rc;
+    PKLDRDYLDMOD    pMod;
+
+    *ppMod = NULL;
+
+    /*
+     * Try find the module among the ones that's already loaded.
+     *
+     * This is very similar to the kldrDyldDoLoad code, except it has to deal with
+     * a couple of additional states and occurs only during prerequisite loading
+     * and the action taken is a little bit different.
+     */
+    rc = kldrDyldFindExistingModule(pszDll, pszPrefix, pszSuffix, enmSearch, fFlags, &pMod);
+    if (!rc)
+    {
+        switch (pMod->enmState)
+        {
+            /*
+             * These are good.
+             */
+            case KLDRSTATE_MAPPED:
+            case KLDRSTATE_RELOADED:
+            case KLDRSTATE_LOADED_PREREQUISITES:
+            case KLDRSTATE_RELOADED_LOADED_PREREQUISITES:
+            case KLDRSTATE_PENDING_INITIALIZATION:
+            case KLDRSTATE_INITIALIZING:
+            case KLDRSTATE_GOOD:
+            case KLDRSTATE_PENDING_TERMINATION:
+                break;
+
+            /*
+             * The module has been terminated so it need to be reloaded, have it's
+             * prereqs loaded, fixed up and initialized before we can use it again.
+             */
+            case KLDRSTATE_PENDING_GC:
+                rc = kldrDyldModReload(pMod);
+                break;
+
+            /*
+             * The module can't be loaded because it failed to initialize already.
+             */
+            case KLDRSTATE_INITIALIZATION_FAILED:
+                rc = KLDR_ERR_PREREQUISITE_MODULE_INIT_FAILED;
+                break;
+
+            /*
+             * Forget it, no idea how to deal with re-initialization.
+             */
+            case KLDRSTATE_TERMINATING:
+                return KLDR_ERR_PREREQUISITE_MODULE_TERMINATING;
+
+            /*
+             * Invalid state.
+             */
+            default:
+                KLDRDYLD_ASSERT(!"invalid state");
+                break;
+        }
+    }
+    else
+    {
+        /*
+         * We'll have to load it from file.
+         */
+        rc = kldrDyldFindNewModule(pszDll, pszPrefix, pszSuffix, enmSearch, fFlags, &pMod);
+        if (!rc)
+            rc = kldrDyldModMap(pMod);
+    }
+
+    /*
+     * On success add dependency.
+     */
+    if (!rc)
+    {
+        kldrDyldModAddDep(pMod, pDep);
+        *ppMod = pMod;
+    }
+    return rc;
+}
+
+
+/**
+ * Starts a new load stack frame.
+ *
+ * @returns Where the new stack frame starts.
+ * @param   pLoadMod        The module being loaded (only used for asserting).
+ */
+static KU32 kldrDyldStackNewFrame(PKLDRDYLDMOD pLoadMod)
+{
+    /*
+     * Clear the fAlreadySeen flags.
+     */
+    PKLDRDYLDMOD pMod = kLdrDyldHead;
+    while (pMod)
+    {
+        pMod->fAlreadySeen = 0;
+
+#ifdef KLDRDYLD_ASSERT
+        switch (pMod->enmState)
+        {
+            case KLDRSTATE_MAPPED:
+            case KLDRSTATE_RELOADED:
+                /* only the just loaded module can be in this state. */
+                KLDRDYLD_ASSERT(pMod == pLoadMod);
+                break;
+
+            case KLDRSTATE_PENDING_INITIALIZATION:
+            case KLDRSTATE_INITIALIZING:
+            case KLDRSTATE_PENDING_TERMINATION:
+            case KLDRSTATE_PENDING_GC:
+            case KLDRSTATE_TERMINATING:
+            case KLDRSTATE_INITIALIZATION_FAILED:
+            case KLDRSTATE_PENDING_DESTROY:
+                /* requires recursion. */
+                KLDRDYLD_ASSERT(g_cActiveLoadCalls + g_cActiveLoadCalls + g_fActiveGC > 1);
+                break;
+
+            case KLDRSTATE_GOOD:
+                /* requires nothing. */
+                break;
+
+            default:
+                KLDRDYLD_ASSERT(!"Invalid state");
+                break;
+        }
+#endif
+
+        /* next */
+        pMod = pMod->Load.pNext;
+    }
+    return g_cStackMods;
+}
+
+
+/**
+ * Records the module.
+ *
+ * @return 0 on success, KERR_NO_MEMORY if we can't expand the table.
+ * @param   pMod        The module to record.
+ */
+static int kldrDyldStackAddModule(PKLDRDYLDMOD pMod)
+{
+    /*
+     * Grow the stack if necessary.
+     */
+    if (g_cStackMods + 1 > g_cStackModsAllocated)
+    {
+        KU32 cNew = g_cStackModsAllocated ? g_cStackModsAllocated * 2 : 128;
+        void *pvOld = g_papStackMods;
+        void *pvNew = kHlpAlloc(cNew * sizeof(g_papStackMods[0]));
+        if (!pvNew)
+            return KERR_NO_MEMORY;
+        kHlpMemCopy(pvNew, pvOld, g_cStackMods * sizeof(g_papStackMods[0]));
+        g_papStackMods = (PPKLDRDYLDMOD)pvNew;
+        kHlpFree(pvOld);
+    }
+
+    /*
+     * Add a reference and push the module onto the stack.
+     */
+    kldrDyldModAddRef(pMod);
+    g_papStackMods[g_cStackMods++] = pMod;
+    return 0;
+}
+
+
+/**
+ * The frame has been completed.
+ *
+ * @returns Where the frame ends.
+ */
+static int kldrDyldStackFrameCompleted(void)
+{
+    return g_cStackMods;
+}
+
+
+/**
+ * Worker routine for kldrDyldStackDropFrame() and kldrDyldDoLoad().
+ *
+ * @param   pMod            The module to perform cleanups on.
+ * @param   rc              Used for state verification.
+ */
+static void kldrDyldStackCleanupOne(PKLDRDYLDMOD pMod, int rc)
+{
+    switch (pMod->enmState)
+    {
+        /*
+         * Just push it along to the PENDING_DESTROY state.
+         */
+        case KLDRSTATE_MAPPED:
+            KLDRDYLD_ASSERT(rc);
+            kldrDyldModUnmap(pMod);
+            KLDRDYLD_ASSERT(pMod->enmState == KLDRSTATE_PENDING_DESTROY);
+            break;
+
+        /*
+         * Move back to PENDING_GC.
+         */
+        case KLDRSTATE_RELOADED:
+            KLDRDYLD_ASSERT(rc);
+            pMod->enmState = KLDRSTATE_PENDING_GC;
+            break;
+
+        /*
+         * Unload prerequisites and unmap the modules.
+         */
+        case KLDRSTATE_LOADED_PREREQUISITES:
+        case KLDRSTATE_FIXED_UP:
+            KLDRDYLD_ASSERT(rc);
+            kldrDyldModUnloadPrerequisites(pMod);
+            KLDRDYLD_ASSERT(pMod->enmState == KLDRSTATE_PENDING_DESTROY);
+            kldrDyldModUnmap(pMod);
+            KLDRDYLD_ASSERT(pMod->enmState == KLDRSTATE_PENDING_DESTROY);
+            break;
+
+        /*
+         * Unload prerequisites and push it back to PENDING_GC.
+         */
+        case KLDRSTATE_RELOADED_LOADED_PREREQUISITES:
+        case KLDRSTATE_RELOADED_FIXED_UP:
+            kldrDyldModUnloadPrerequisites(pMod);
+            KLDRDYLD_ASSERT(pMod->enmState == KLDRSTATE_PENDING_GC);
+            break;
+
+        /*
+         * Nothing to do, just asserting sanity.
+         */
+        case KLDRSTATE_INITIALIZING:
+            /* Implies there is another load going on. */
+            KLDRDYLD_ASSERT(g_cActiveLoadCalls > 1);
+            break;
+        case KLDRSTATE_TERMINATING:
+            /* GC in progress. */
+            KLDRDYLD_ASSERT(g_fActiveGC);
+            break;
+        case KLDRSTATE_PENDING_TERMINATION:
+        case KLDRSTATE_PENDING_INITIALIZATION:
+        case KLDRSTATE_PENDING_GC:
+        case KLDRSTATE_PENDING_DESTROY:
+            KLDRDYLD_ASSERT(rc);
+            break;
+        case KLDRSTATE_GOOD:
+            break;
+
+        /*
+         * Bad states.
+         */
+        default:
+            KLDRDYLD_ASSERT(!"drop frame bad state (a)");
+            break;
+    }
+}
+
+
+/**
+ * Done with the stack frame, dereference all the modules in it.
+ *
+ * @param   iLoad1st        The start of the stack frame.
+ * @param   iLoadEnd        The end of the stack frame.
+ * @param   rc              Used for state verification.
+ */
+static void kldrDyldStackDropFrame(KU32 iLoad1st, KU32 iLoadEnd, int rc)
+{
+    KU32 i;
+    KLDRDYLD_ASSERT(iLoad1st <= g_cStackMods);
+    KLDRDYLD_ASSERT(iLoadEnd == g_cStackMods);
+
+    /*
+     * First pass: Do all the cleanups we can, but don't destroy anything just yet.
+     */
+    i = iLoadEnd;
+    while (i-- > iLoad1st)
+    {
+        PKLDRDYLDMOD pMod = g_papStackMods[i];
+        kldrDyldStackCleanupOne(pMod, rc);
+    }
+
+    /*
+     * Second pass: Release the references so modules pending destruction
+     *              can be completely removed.
+     */
+    for (i = iLoad1st; i < iLoadEnd ; i++)
+    {
+        PKLDRDYLDMOD pMod = g_papStackMods[i];
+
+        /*
+         * Revalidate the module state.
+         */
+        switch (pMod->enmState)
+        {
+            case KLDRSTATE_INITIALIZING:
+            case KLDRSTATE_TERMINATING:
+            case KLDRSTATE_PENDING_TERMINATION:
+            case KLDRSTATE_PENDING_INITIALIZATION:
+            case KLDRSTATE_PENDING_GC:
+            case KLDRSTATE_PENDING_DESTROY:
+            case KLDRSTATE_GOOD:
+                break;
+            default:
+                KLDRDYLD_ASSERT(!"drop frame bad state (b)");
+                break;
+        }
+
+        /*
+         * Release it.
+         */
+        kldrDyldModDeref(pMod);
+    }
+
+    /*
+     * Drop the stack frame.
+     */
+    g_cStackMods = iLoad1st;
+}
+
+
+/**
+ * Do garbage collection.
+ *
+ * This isn't doing anything unless it's called from the last
+ * load or unload call.
+ */
+static void kldrDyldDoModuleTerminationAndGarabageCollection(void)
+{
+    PKLDRDYLDMOD pMod;
+
+    /*
+     * We don't do anything until we're got rid of all recursive calls.
+     * This will ensure that we get the most optimal termination order and
+     * that we don't unload anything too early.
+     */
+    if (g_cActiveLoadCalls || g_cActiveUnloadCalls || g_fActiveGC)
+        return;
+    g_fActiveGC = 1;
+
+    do
+    {
+        /*
+         * 1. Release prerequisites for any left over modules.
+         */
+        for (pMod = kLdrDyldHead; pMod; pMod = pMod->Load.pNext)
+        {
+            kldrDyldModAddRef(pMod);
+
+            switch (pMod->enmState)
+            {
+                case KLDRSTATE_GOOD:
+                case KLDRSTATE_PENDING_GC:
+                case KLDRSTATE_PENDING_TERMINATION:
+                    break;
+
+                case KLDRSTATE_INITIALIZATION_FAILED: /* just in case */
+                case KLDRSTATE_PENDING_INITIALIZATION:
+                    kldrDyldModUnloadPrerequisites(pMod);
+                    break;
+
+                default:
+                    KLDRDYLD_ASSERT(!"invalid GC state (a)");
+                    break;
+            }
+
+            kldrDyldModDeref(pMod);
+        }
+
+        /*
+         * 2. Do init calls until we encounter somebody calling load/unload.
+         */
+        for (pMod = g_pkLdrDyldTermHead; pMod; pMod = pMod->InitTerm.pNext)
+        {
+            int fRestart = 0;
+            kldrDyldModAddRef(pMod);
+
+            switch (pMod->enmState)
+            {
+                case KLDRSTATE_GOOD:
+                case KLDRSTATE_PENDING_GC:
+                    break;
+
+                case KLDRSTATE_PENDING_TERMINATION:
+                {
+                    const KU32 cTotalLoadCalls = g_cTotalLoadCalls;
+                    const KU32 cTotalUnloadCalls = g_cTotalUnloadCalls;
+                    kldrDyldModCallTerm(pMod);
+                    fRestart = cTotalLoadCalls != g_cTotalLoadCalls
+                            || cTotalUnloadCalls != g_cTotalUnloadCalls;
+                    break;
+                }
+
+                default:
+                    KLDRDYLD_ASSERT(!"invalid GC state (b)");
+                    break;
+            }
+
+            kldrDyldModDeref(pMod);
+            if (fRestart)
+                break;
+        }
+    } while (pMod);
+
+    /*
+     * Unmap and destroy modules pending for GC.
+     */
+    pMod = kLdrDyldHead;
+    while (pMod)
+    {
+        PKLDRDYLDMOD pNext = pMod->Load.pNext;
+        kldrDyldModAddRef(pMod);
+
+        switch (pMod->enmState)
+        {
+            case KLDRSTATE_INITIALIZATION_FAILED:
+            case KLDRSTATE_PENDING_GC:
+                KLDRDYLD_ASSERT(!pMod->cDepRefs);
+                KLDRDYLD_ASSERT(!pMod->cDynRefs);
+                pMod->enmState = KLDRSTATE_GC;
+                kldrDyldModUnmap(pMod);
+                KLDRDYLD_ASSERT(pMod->enmState == KLDRSTATE_PENDING_DESTROY);
+                kldrDyldModDestroy(pMod);
+                KLDRDYLD_ASSERT(pMod->enmState == KLDRSTATE_DESTROYED);
+                break;
+
+            case KLDRSTATE_GOOD:
+                break;
+            default:
+                KLDRDYLD_ASSERT(!"invalid GC state (c)");
+                break;
+        }
+
+        kldrDyldModDeref(pMod);
+
+        /* next */
+        pMod = pNext;
+    }
+
+    g_fActiveGC = 0;
+}
+
+
+/**
+ * Worker for kLdrDyldUnload().
+ * @internal
+ */
+static int kldrDyldDoUnload(PKLDRDYLDMOD pMod)
+{
+    return kldrDyldModDynamicUnload(pMod);
+}
+
+
+/**
+ * Worker for kLdrDyldFindByName().
+ * @internal
+ */
+static int kldrDyldDoFindByName(const char *pszDll, const char *pszPrefix, const char *pszSuffix, KLDRDYLDSEARCH enmSearch,
+                                unsigned fFlags, PPKLDRDYLDMOD ppMod)
+{
+    return kldrDyldFindExistingModule(pszDll, pszPrefix, pszSuffix, enmSearch, fFlags, ppMod);
+}
+
+
+/**
+ * Worker for kLdrDyldFindByAddress().
+ * @internal
+ */
+static int kldrDyldDoFindByAddress(KUPTR Address, PPKLDRDYLDMOD ppMod, KU32 *piSegment, KUPTR *poffSegment)
+{
+    /* Scan the segments of each module in the load list. */
+    PKLDRDYLDMOD pMod = kLdrDyldHead;
+    while (pMod)
+    {
+        KU32 iSeg;
+        for (iSeg = 0; iSeg < pMod->pMod->cSegments; iSeg++)
+        {
+            KLDRADDR off = (KLDRADDR)Address - pMod->pMod->aSegments[iSeg].MapAddress;
+            if (off < pMod->pMod->aSegments[iSeg].cb)
+            {
+                *ppMod = pMod->hMod;
+                if (piSegment)
+                    *piSegment = iSeg;
+                if (poffSegment)
+                    *poffSegment = (KUPTR)off;
+                return 0;
+            }
+        }
+
+        /* next */
+        pMod = pMod->Load.pNext;
+    }
+
+    return KLDR_ERR_MODULE_NOT_FOUND;
+}
+
+
+/**
+ * Worker for kLdrDyldGetName().
+ * @internal
+ */
+static int kldrDyldDoGetName(PKLDRDYLDMOD pMod, char *pszName, KSIZE cchName)
+{
+    return kldrDyldModGetName(pMod, pszName, cchName);
+}
+
+
+/**
+ * Worker for kLdrDyldGetFilename().
+ * @internal
+ */
+static int kldrDyldDoGetFilename(PKLDRDYLDMOD pMod, char *pszFilename, KSIZE cchFilename)
+{
+    return kldrDyldModGetFilename(pMod, pszFilename, cchFilename);
+}
+
+
+/**
+ * Worker for kLdrDyldQuerySymbol().
+ * @internal
+ */
+static int kldrDyldDoQuerySymbol(PKLDRDYLDMOD pMod, KU32 uSymbolOrdinal, const char *pszSymbolName, KUPTR *pValue, KU32 *pfKind)
+{
+    return kldrDyldModQuerySymbol(pMod, uSymbolOrdinal, pszSymbolName, pValue, pfKind);
+}
+
+
+/**
+ * Panic / failure
+ *
+ * @returns rc if we're in a position where we can return.
+ * @param   rc              Return code.
+ * @param   pszFormat       Message string. Limited fprintf like formatted.
+ * @param   ...             Message string arguments.
+ */
+int kldrDyldFailure(int rc, const char *pszFilename, ...)
+{
+    /** @todo print it. */
+    if (g_fBootstrapping);
+        kHlpExit(1);
+    return rc;
+}
+
+
+/**
+ * Copies the error string to the user buffer.
+ *
+ * @returns rc.
+ * @param   rc      The status code.
+ * @param   pszErr  Where to copy the error string to.
+ * @param   cchErr  The size of the destination buffer.
+ */
+static int kldrDyldCopyError(int rc, char *pszErr, KSIZE cchErr)
+{
+    KSIZE  cchToCopy;
+
+    /* if no error string, format the rc into a string. */
+    if (!g_szkLdrDyldError[0] && rc)
+        kHlpInt2Ascii(g_szkLdrDyldError, sizeof(g_szkLdrDyldError), rc, 10);
+
+    /* copy it if we got something. */
+    if (cchErr && pszErr && g_szkLdrDyldError[0])
+    {
+        cchToCopy = kHlpStrLen(g_szkLdrDyldError);
+        if (cchToCopy >= cchErr)
+            cchToCopy = cchErr - 1;
+        kHlpMemCopy(pszErr, g_szkLdrDyldError, cchToCopy);
+        pszErr[cchToCopy] = '\0';
+    }
+
+    return rc;
+}
+
diff --git a/src/lib/kStuff/kLdr/kLdrDyldFind.c b/src/lib/kStuff/kLdr/kLdrDyldFind.c
new file mode 100644
index 0000000..9d6562e
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrDyldFind.c
@@ -0,0 +1,1086 @@
+/* $Id: kLdrDyldFind.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - The Dynamic Loader, File Searching Methods.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kLdr.h>
+#include "kLdrInternal.h"
+
+#if K_OS == K_OS_LINUX
+# include <k/kHlpSys.h>
+
+#elif K_OS == K_OS_OS2
+# define INCL_BASE
+# define INCL_ERRORS
+# include <os2.h>
+# ifndef LIBPATHSTRICT
+#  define LIBPATHSTRICT 3
+# endif
+  extern APIRET APIENTRY DosQueryHeaderInfo(HMODULE hmod, ULONG ulIndex, PVOID pvBuffer, ULONG cbBuffer, ULONG ulSubFunction);
+# define QHINF_EXEINFO       1 /* NE exeinfo. */
+# define QHINF_READRSRCTBL   2 /* Reads from the resource table. */
+# define QHINF_READFILE      3 /* Reads from the executable file. */
+# define QHINF_LIBPATHLENGTH 4 /* Gets the libpath length. */
+# define QHINF_LIBPATH       5 /* Gets the entire libpath. */
+# define QHINF_FIXENTRY      6 /* NE only */
+# define QHINF_STE           7 /* NE only */
+# define QHINF_MAPSEL        8 /* NE only */
+
+#elif K_OS == K_OS_WINDOWS
+# undef IMAGE_DOS_SIGNATURE
+# undef IMAGE_NT_SIGNATURE
+# include <Windows.h>
+
+#endif
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** @def KLDRDYLDFIND_STRICT
+ * Define KLDRDYLDFIND_STRICT to enabled strict checks in kLdrDyldFind. */
+#define KLDRDYLDFIND_STRICT 1
+
+/** @def KLDRDYLDFIND_ASSERT
+ * Assert that an expression is true when KLDRDYLDFIND_STRICT is defined.
+ */
+#ifdef KLDRDYLDFIND_STRICT
+# define KLDRDYLDFIND_ASSERT(expr)  kHlpAssert(expr)
+#else
+# define KLDRDYLDFIND_ASSERT(expr)  do {} while (0)
+#endif
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Search arguments.
+ * This avoids a bunch of unnecessary string lengths and calculations.
+ */
+typedef struct KLDRDYLDFINDARGS
+{
+    const char *pszName;
+    KSIZE       cchName;
+
+    const char *pszPrefix;
+    KSIZE       cchPrefix;
+
+    const char *pszSuffix;
+    KSIZE       cchSuffix;
+
+    KSIZE       cchMaxLength;
+
+    KLDRDYLDSEARCH  enmSearch;
+    KU32            fFlags;
+    PPKRDR          ppRdr;
+} KLDRDYLDFINDARGS, *PKLDRDYLDFINDARGS;
+
+typedef const KLDRDYLDFINDARGS *PCKLDRDYLDFINDARGS;
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** @name The kLdr search method parameters.
+ * @{ */
+/** The kLdr EXE search path.
+ * During EXE searching the it's initialized with the values of the KLDR_PATH and
+ * the PATH env.vars. Both ';' and ':' can be used as separators.
+ */
+char            kLdrDyldExePath[8192];
+/** The kLdr DLL search path.
+ * During initialization the KLDR_LIBRARY_PATH env.var. and the path in the
+ * executable stub is appended. Both ';' and ':' can be used as separators.
+ */
+char            kLdrDyldLibraryPath[8192];
+/** The kLdr application directory.
+ * This is initialized when the executable is 'loaded' or by a kLdr user.
+ */
+char            kLdrDyldAppDir[260];
+/** The default kLdr DLL prefix.
+ * This is initialized with the KLDR_DEF_PREFIX env.var. + the prefix in the executable stub.
+ */
+char            kLdrDyldDefPrefix[16];
+/** The default kLdr DLL suffix.
+ * This is initialized with the KLDR_DEF_SUFFIX env.var. + the prefix in the executable stub.
+ */
+char            kLdrDyldDefSuffix[16];
+/** @} */
+
+
+/** @name The OS/2 search method parameters.
+ * @{
+ */
+/** The OS/2 LIBPATH.
+ * This is queried from the os2krnl on OS/2, while on other systems initialized using
+ * the KLDR_OS2_LIBPATH env.var.
+ */
+char            kLdrDyldOS2Libpath[2048];
+/** The OS/2 LIBPATHSTRICT ("T" or '\0').
+ * This is queried from the os2krnl on OS/2, while on other systems initialized using
+ * the KLDR_OS2_LIBPATHSTRICT env.var.
+ */
+char            kLdrDyldOS2LibpathStrict[8];
+/** The OS/2 BEGINLIBPATH.
+ * This is queried from the os2krnl on OS/2, while on other systems initialized using
+ * the KLDR_OS2_BEGINLIBPATH env.var.
+ */
+char            kLdrDyldOS2BeginLibpath[2048];
+/** The OS/2 ENDLIBPATH.
+ * This is queried from the os2krnl on OS/2, while on other systems initialized using
+ * the KLDR_OS2_ENDLIBPATH env.var.
+ */
+char            kLdrDyldOS2EndLibpath[2048];
+/** @} */
+
+
+/** @name The Windows search method parameters.
+ * @{ */
+/** The Windows application directory.
+ * This is initialized when the executable is 'loaded' or by a kLdr user.
+ */
+char            kLdrDyldWindowsAppDir[260];
+/** The Windows system directory.
+ * This is queried from the Win32/64 subsystem on Windows, while on other systems
+ * initialized using the KLDR_WINDOWS_SYSTEM_DIR env.var.
+ */
+char            kLdrDyldWindowsSystemDir[260];
+/** The Windows directory.
+ * This is queried from the Win32/64 subsystem on Windows, while on other systems
+ * initialized using the KLDR_WINDOWS_DIR env.var.
+ */
+char            kLdrDyldWindowsDir[260];
+/** The Windows path.
+ * This is queried from the PATH env.var. on Windows, while on other systems
+ * initialized using the KLDR_WINDOWS_PATH env.var. and falling back on
+ * the PATH env.var. if it wasn't found.
+ */
+char            kLdrDyldWindowsPath[8192];
+/** @} */
+
+
+/** @name The Common Unix search method parameters.
+ * @{
+ */
+/** The Common Unix library path.
+ * Initialized from the env.var. KLDR_UNIX_LIBRARY_PATH or LD_LIBRARY_PATH or the
+ * former wasn't found.
+ */
+char            kLdrDyldUnixLibraryPath[8192];
+/** The Common Unix system library path. */
+char            kLdrDyldUnixSystemLibraryPath[1024] = "/lib;/usr/lib";
+/** @} */
+
+/** @todo Deal with DT_RUNPATH and DT_RPATH. */
+/** @todo ld.so.cache? */
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static int kldrDyldFindDoDllSearch(const char *pszName, const char *pszPrefix, const char *pszSuffix,
+                                KLDRDYLDSEARCH enmSearch, unsigned fFlags, PPKRDR ppRdr);
+static int kldrDyldFindDoExeSearch(const char *pszName, const char *pszPrefix, const char *pszSuffix,
+                                   KLDRDYLDSEARCH enmSearch, unsigned fFlags, PPKRDR ppRdr);
+static int kldrDyldFindTryOpen(const char *pszFilename, PPKRDR ppRdr);
+static int kldrDyldFindTryOpenPath(const char *pchPath, KSIZE cchPath, PCKLDRDYLDFINDARGS pArgs);
+static int kldrDyldFindEnumeratePath(const char *pszSearchPath, PCKLDRDYLDFINDARGS pArgs);
+static int kldrDyldFindGetDefaults(KLDRDYLDSEARCH *penmSearch, const char **pszPrefix,
+                                   const char **pszSuffix, const char *pszName, KU32 fFlags);
+
+
+/**
+ * Initializes the find paths.
+ *
+ * @returns 0 on success, non-zero on failure.
+ */
+int kldrDyldFindInit(void)
+{
+    KSIZE   cch;
+    int     rc;
+    char    szTmp[sizeof(kLdrDyldDefSuffix)];
+
+    /*
+     * The kLdr search parameters.
+     */
+    rc = kHlpGetEnv("KLDR_LIBRARY_PATH", kLdrDyldLibraryPath, sizeof(kLdrDyldLibraryPath));
+    rc = kHlpGetEnv("KLDR_DEF_PREFIX", szTmp, sizeof(szTmp));
+    if (!rc)
+        kHlpMemCopy(kLdrDyldDefPrefix, szTmp, sizeof(szTmp));
+    rc = kHlpGetEnv("KLDR_DEF_SUFFIX", szTmp, sizeof(szTmp));
+    if (!rc)
+        kHlpMemCopy(kLdrDyldDefSuffix, szTmp, sizeof(szTmp));
+
+    /*
+     * The OS/2 search parameters.
+     */
+#if K_OS == K_OS_OS2
+    rc = DosQueryHeaderInfo(NULLHANDLE, 0, kLdrDyldOS2Libpath, sizeof(kLdrDyldOS2Libpath), QHINF_LIBPATH);
+    if (rc)
+        return rc;
+    rc = DosQueryExtLIBPATH((PSZ)kLdrDyldOS2LibpathStrict, LIBPATHSTRICT);
+    if (rc)
+        kLdrDyldOS2LibpathStrict[0] = '\0';
+    rc = DosQueryExtLIBPATH((PSZ)kLdrDyldOS2BeginLibpath, BEGIN_LIBPATH);
+    if (rc)
+        kLdrDyldOS2BeginLibpath[0] = '\0';
+    rc = DosQueryExtLIBPATH((PSZ)kLdrDyldOS2EndLibpath, END_LIBPATH);
+    if (rc)
+        kLdrDyldOS2EndLibpath[0] = '\0';
+
+#else
+    kHlpGetEnv("KLDR_OS2_LIBPATH", kLdrDyldOS2Libpath, sizeof(kLdrDyldOS2Libpath));
+    kHlpGetEnv("KLDR_OS2_LIBPATHSTRICT", kLdrDyldOS2LibpathStrict, sizeof(kLdrDyldOS2LibpathStrict));
+    if (    kLdrDyldOS2LibpathStrict[0] == 'T'
+        ||  kLdrDyldOS2LibpathStrict[0] == 't')
+        kLdrDyldOS2LibpathStrict[0] = 'T';
+    else
+        kLdrDyldOS2LibpathStrict[0] = '\0';
+    kLdrDyldOS2LibpathStrict[1] = '\0';
+    kHlpGetEnv("KLDR_OS2_BEGINLIBPATH", kLdrDyldOS2BeginLibpath, sizeof(kLdrDyldOS2BeginLibpath));
+    kHlpGetEnv("KLDR_OS2_ENDLIBPATH", kLdrDyldOS2EndLibpath, sizeof(kLdrDyldOS2EndLibpath));
+#endif
+
+    /*
+     * The windows search parameters.
+     */
+#if K_OS == K_OS_WINDOWS
+    cch = GetSystemDirectory(kLdrDyldWindowsSystemDir, sizeof(kLdrDyldWindowsSystemDir));
+    if (cch >= sizeof(kLdrDyldWindowsSystemDir))
+        return (rc = GetLastError()) ? rc : -1;
+    cch = GetWindowsDirectory(kLdrDyldWindowsDir, sizeof(kLdrDyldWindowsDir));
+    if (cch >= sizeof(kLdrDyldWindowsDir))
+        return (rc = GetLastError()) ? rc : -1;
+    kHlpGetEnv("PATH", kLdrDyldWindowsPath, sizeof(kLdrDyldWindowsPath));
+#else
+    kHlpGetEnv("KLDR_WINDOWS_SYSTEM_DIR", kLdrDyldWindowsSystemDir, sizeof(kLdrDyldWindowsSystemDir));
+    kHlpGetEnv("KLDR_WINDOWS_DIR", kLdrDyldWindowsDir, sizeof(kLdrDyldWindowsDir));
+    rc = kHlpGetEnv("KLDR_WINDOWS_PATH", kLdrDyldWindowsPath, sizeof(kLdrDyldWindowsPath));
+    if (rc)
+        kHlpGetEnv("PATH", kLdrDyldWindowsPath, sizeof(kLdrDyldWindowsPath));
+#endif
+
+    /*
+     * The Unix search parameters.
+     */
+    rc = kHlpGetEnv("KLDR_UNIX_LIBRARY_PATH", kLdrDyldUnixLibraryPath, sizeof(kLdrDyldUnixLibraryPath));
+    if (rc)
+        kHlpGetEnv("LD_LIBRARY_PATH", kLdrDyldUnixLibraryPath, sizeof(kLdrDyldUnixLibraryPath));
+
+    (void)cch;
+    return 0;
+}
+
+
+/**
+ * Lazily initialize the two application directory paths.
+ */
+static void kldrDyldFindLazyInitAppDir(void)
+{
+    if (!kLdrDyldAppDir[0])
+    {
+#if K_OS == K_OS_DARWIN
+        /** @todo implement this! */
+        kLdrDyldWindowsAppDir[0] = kLdrDyldAppDir[0] = '.';
+        kLdrDyldWindowsAppDir[1] = kLdrDyldAppDir[1] = '\0';
+
+#elif K_OS == K_OS_LINUX
+        KSSIZE cch = kHlpSys_readlink("/proc/self/exe", kLdrDyldAppDir, sizeof(kLdrDyldAppDir) - 1);
+        if (cch > 0)
+        {
+            kLdrDyldAppDir[cch] = '\0';
+            *kHlpGetFilename(kLdrDyldAppDir) = '\0';
+            kHlpMemCopy(kLdrDyldWindowsAppDir, kLdrDyldAppDir, sizeof(kLdrDyldAppDir));
+        }
+        else
+        {
+            kLdrDyldWindowsAppDir[0] = kLdrDyldAppDir[0] = '.';
+            kLdrDyldWindowsAppDir[1] = kLdrDyldAppDir[1] = '\0';
+        }
+
+#elif K_OS == K_OS_OS2
+        PPIB pPib;
+        PTIB pTib;
+        APIRET rc;
+
+        DosGetInfoBlocks(&pTib, &pPib);
+        rc = DosQueryModuleName(pPib->pib_hmte, sizeof(kLdrDyldAppDir), kLdrDyldAppDir);
+        if (!rc)
+        {
+            *kHlpGetFilename(kLdrDyldAppDir) = '\0';
+             kHlpMemCopy(kLdrDyldWindowsAppDir, kLdrDyldAppDir, sizeof(kLdrDyldAppDir));
+        }
+        else
+        {
+            kLdrDyldWindowsAppDir[0] = kLdrDyldAppDir[0] = '.';
+            kLdrDyldWindowsAppDir[1] = kLdrDyldAppDir[1] = '\0';
+        }
+
+#elif K_OS == K_OS_WINDOWS
+        DWORD dwSize = GetModuleFileName(NULL /* the executable */, kLdrDyldAppDir, sizeof(kLdrDyldAppDir));
+        if (dwSize > 0)
+        {
+            *kHlpGetFilename(kLdrDyldAppDir) = '\0';
+            kHlpMemCopy(kLdrDyldWindowsAppDir, kLdrDyldAppDir, sizeof(kLdrDyldAppDir));
+        }
+        else
+        {
+            kLdrDyldWindowsAppDir[0] = kLdrDyldAppDir[0] = '.';
+            kLdrDyldWindowsAppDir[1] = kLdrDyldAppDir[1] = '\0';
+        }
+
+#else
+# error "Port me"
+#endif
+    }
+}
+
+
+/**
+ * Locates and opens a module using the specified search method.
+ *
+ * @returns 0 and *ppMod on success, non-zero OS specific error on failure.
+ *
+ * @param   pszName         Partial or complete name, it's specific to the search method to determin which.
+ * @param   pszPrefix       Prefix than can be used when searching.
+ * @param   pszSuffix       Suffix than can be used when searching.
+ * @param   enmSearch       The file search method to apply.
+ * @param   fFlags          Search flags.
+ * @param   ppMod           Where to store the file provider instance on success.
+ */
+int kldrDyldFindNewModule(const char *pszName, const char *pszPrefix, const char *pszSuffix,
+                          KLDRDYLDSEARCH enmSearch, unsigned fFlags, PPKLDRDYLDMOD ppMod)
+{
+    int rc;
+    PKRDR pRdr = NULL;
+
+    *ppMod = NULL;
+
+    /*
+     * If this isn't just a filename, we the caller has specified a file
+     * that should be opened directly and not a module name to be searched for.
+     */
+    if (!kHlpIsFilenameOnly(pszName))
+        rc = kldrDyldFindTryOpen(pszName, &pRdr);
+    else if (!(fFlags & KLDRDYLD_LOAD_FLAGS_EXECUTABLE))
+        rc = kldrDyldFindDoDllSearch(pszName, pszPrefix, pszSuffix, enmSearch, fFlags, &pRdr);
+    else
+        rc = kldrDyldFindDoExeSearch(pszName, pszPrefix, pszSuffix, enmSearch, fFlags, &pRdr);
+    if (!rc)
+    {
+#ifdef KLDRDYLDFIND_STRICT
+        /* Sanity check of kldrDyldFindExistingModule. */
+        if (fFlags & KLDRYDLD_LOAD_FLAGS_SPECIFIC_MODULE)
+        {
+            const char     *pszFilename = kRdrName(pRdr);
+            const KSIZE     cchFilename = kHlpStrLen(pszFilename);
+            PKLDRDYLDMOD    pCur;
+            for (pCur = kLdrDyldHead; pCur; pCur = pCur->Load.pNext)
+                KLDRDYLDFIND_ASSERT(    pCur->pMod->cchFilename != cchFilename
+                                    ||  kHlpMemComp(pCur->pMod->pszFilename, pszFilename, cchFilename));
+        }
+#endif
+
+        /*
+         * Check for matching non-global modules that should be promoted.
+         */
+        if (!(fFlags & KLDRYDLD_LOAD_FLAGS_SPECIFIC_MODULE))
+        {
+            const char     *pszFilename = kRdrName(pRdr);
+            const KSIZE     cchFilename = kHlpStrLen(pszFilename);
+            PKLDRDYLDMOD    pCur;
+            for (pCur = kLdrDyldHead; pCur; pCur = pCur->Load.pNext)
+            {
+                if (    !pCur->fGlobalOrSpecific
+                    &&  pCur->pMod->cchFilename == cchFilename
+                    &&  !kHlpMemComp(pCur->pMod->pszFilename, pszFilename, cchFilename))
+                {
+                    kRdrClose(pRdr);
+                    kldrDyldModMarkGlobal(pCur);
+                    *ppMod = pCur;
+                    return 0;
+                }
+                KLDRDYLDFIND_ASSERT(    pCur->pMod->cchFilename != cchFilename
+                                    ||  kHlpMemComp(pCur->pMod->pszFilename, pszFilename, cchFilename));
+            }
+        }
+
+        /*
+         * Create a new module.
+         */
+        rc = kldrDyldModCreate(pRdr, fFlags, ppMod);
+        if (rc)
+            kRdrClose(pRdr);
+    }
+    return rc;
+}
+
+
+/**
+ * Searches for a DLL file using the specified method.
+ *
+ * @returns 0 on success and *ppMod pointing to the new module.
+ * @returns KLDR_ERR_MODULE_NOT_FOUND if the specified file couldn't be opened.
+ * @returns non-zero kLdr or OS specific status code on other failures.
+ * @param   pszName     The name.
+ * @param   pszPrefix   The prefix, optional.
+ * @param   pszSuffix   The suffix, optional.
+ * @param   enmSearch   The search method.
+ * @param   fFlags      The load/search flags.
+ * @param   ppRdr       Where to store the pointer to the file provider instance on success.
+ */
+static int kldrDyldFindDoDllSearch(const char *pszName, const char *pszPrefix, const char *pszSuffix,
+                                   KLDRDYLDSEARCH enmSearch, unsigned fFlags, PPKRDR ppRdr)
+{
+    int rc;
+    KLDRDYLDFINDARGS Args;
+
+    /*
+     * Initialize the argument structure and resolve defaults.
+     */
+    Args.enmSearch = enmSearch;
+    Args.pszPrefix = pszPrefix;
+    Args.pszSuffix = pszSuffix;
+    rc = kldrDyldFindGetDefaults(&Args.enmSearch, &Args.pszPrefix, &Args.pszSuffix, pszName, fFlags);
+    if (rc)
+        return rc;
+    Args.pszName = pszName;
+    Args.cchName = kHlpStrLen(pszName);
+    Args.cchPrefix = Args.pszPrefix ? kHlpStrLen(Args.pszPrefix) : 0;
+    Args.cchSuffix = Args.pszSuffix ? kHlpStrLen(Args.pszSuffix) : 0;
+    Args.cchMaxLength = Args.cchName + Args.cchSuffix + Args.cchPrefix;
+    Args.fFlags = fFlags;
+    Args.ppRdr = ppRdr;
+
+    /*
+     * Apply the specified search method.
+     */
+/** @todo get rid of the strlen() on the various paths here! */
+    switch (Args.enmSearch)
+    {
+        case KLDRDYLD_SEARCH_KLDR:
+        {
+            kldrDyldFindLazyInitAppDir();
+            if (kLdrDyldAppDir[0] != '\0')
+            {
+                rc = kldrDyldFindTryOpenPath(kLdrDyldAppDir, kHlpStrLen(kLdrDyldAppDir), &Args);
+                if (rc != KLDR_ERR_MODULE_NOT_FOUND)
+                    break;
+            }
+            rc = kldrDyldFindTryOpenPath(".", 1, &Args);
+            if (rc != KLDR_ERR_MODULE_NOT_FOUND)
+                break;
+            rc = kldrDyldFindEnumeratePath(kLdrDyldLibraryPath, &Args);
+            break;
+        }
+
+        case KLDRDYLD_SEARCH_OS2:
+        {
+            rc = kldrDyldFindEnumeratePath(kLdrDyldOS2BeginLibpath, &Args);
+            if (rc != KLDR_ERR_MODULE_NOT_FOUND)
+                break;
+            rc = kldrDyldFindEnumeratePath(kLdrDyldOS2Libpath, &Args);
+            if (rc != KLDR_ERR_MODULE_NOT_FOUND)
+                break;
+            rc = kldrDyldFindEnumeratePath(kLdrDyldOS2EndLibpath, &Args);
+            break;
+        }
+
+        case KLDRDYLD_SEARCH_WINDOWS:
+        case KLDRDYLD_SEARCH_WINDOWS_ALTERED:
+        {
+            kldrDyldFindLazyInitAppDir();
+            rc = kldrDyldFindTryOpenPath(kLdrDyldWindowsAppDir, kHlpStrLen(kLdrDyldWindowsAppDir), &Args);
+            if (rc != KLDR_ERR_MODULE_NOT_FOUND)
+                break;
+            if (Args.enmSearch == KLDRDYLD_SEARCH_WINDOWS_ALTERED)
+            {
+                rc = kldrDyldFindTryOpenPath(".", 1, &Args);
+                if (rc != KLDR_ERR_MODULE_NOT_FOUND)
+                    break;
+            }
+            rc = kldrDyldFindTryOpenPath(kLdrDyldWindowsSystemDir, kHlpStrLen(kLdrDyldWindowsSystemDir), &Args);
+            if (rc != KLDR_ERR_MODULE_NOT_FOUND)
+                break;
+            rc = kldrDyldFindTryOpenPath(kLdrDyldWindowsDir, kHlpStrLen(kLdrDyldWindowsDir), &Args);
+            if (rc != KLDR_ERR_MODULE_NOT_FOUND)
+                break;
+            if (Args.enmSearch == KLDRDYLD_SEARCH_WINDOWS)
+            {
+                rc = kldrDyldFindTryOpenPath(".", 1, &Args);
+                if (rc != KLDR_ERR_MODULE_NOT_FOUND)
+                    break;
+            }
+            rc = kldrDyldFindEnumeratePath(kLdrDyldWindowsPath, &Args);
+            break;
+        }
+
+        case KLDRDYLD_SEARCH_UNIX_COMMON:
+        {
+            rc = kldrDyldFindEnumeratePath(kLdrDyldUnixLibraryPath, &Args);
+            if (rc == KLDR_ERR_MODULE_NOT_FOUND)
+                break;
+            rc = kldrDyldFindEnumeratePath(kLdrDyldUnixSystemLibraryPath, &Args);
+            break;
+        }
+
+        default: kHlpAssert(!"internal error"); return -1;
+    }
+    return rc;
+}
+
+
+/**
+ * Searches for an EXE file using the specified method.
+ *
+ * @returns 0 on success and *ppMod pointing to the new module.
+ * @returns KLDR_ERR_MODULE_NOT_FOUND if the specified file couldn't be opened.
+ * @returns non-zero kLdr or OS specific status code on other failures.
+ * @param   pszName     The name.
+ * @param   pszPrefix   The prefix, optional.
+ * @param   pszSuffix   The suffix, optional.
+ * @param   enmSearch   The search method.
+ * @param   fFlags      The load/search flags.
+ * @param   ppRdr       Where to store the pointer to the file provider instance on success.
+ */
+static int kldrDyldFindDoExeSearch(const char *pszName, const char *pszPrefix, const char *pszSuffix,
+                                   KLDRDYLDSEARCH enmSearch, unsigned fFlags, PPKRDR ppRdr)
+{
+    int rc;
+    KLDRDYLDFINDARGS Args;
+
+    /*
+     * Initialize the argument structure and resolve defaults.
+     */
+    Args.enmSearch = enmSearch;
+    Args.pszPrefix = pszPrefix;
+    Args.pszSuffix = pszSuffix;
+    rc = kldrDyldFindGetDefaults(&Args.enmSearch, &Args.pszPrefix, &Args.pszSuffix, pszName, fFlags);
+    if (rc)
+        return rc;
+    Args.pszName = pszName;
+    Args.cchName = kHlpStrLen(pszName);
+    Args.cchPrefix = Args.pszPrefix ? kHlpStrLen(Args.pszPrefix) : 0;
+    Args.cchSuffix = Args.pszSuffix ? kHlpStrLen(Args.pszSuffix) : 0;
+    Args.cchMaxLength = Args.cchName + Args.cchSuffix + Args.cchPrefix;
+    Args.fFlags = fFlags;
+    Args.ppRdr = ppRdr;
+
+    /*
+     * If we're bootstrapping a process, we'll start by looking in the
+     * application directory and the check out the path.
+     */
+    if (g_fBootstrapping)
+    {
+        kldrDyldFindLazyInitAppDir();
+        if (kLdrDyldAppDir[0] != '\0')
+        {
+            rc = kldrDyldFindTryOpenPath(kLdrDyldAppDir, kHlpStrLen(kLdrDyldAppDir), &Args);
+            if (rc != KLDR_ERR_MODULE_NOT_FOUND)
+                return rc;
+        }
+    }
+
+    /*
+     * Search the EXE search path. Initialize it the first time around.
+     */
+    if (!kLdrDyldExePath[0])
+    {
+        KSIZE cch;
+        kHlpGetEnv("KLDR_EXE_PATH", kLdrDyldExePath, sizeof(kLdrDyldExePath) - 10);
+        cch = kHlpStrLen(kLdrDyldExePath);
+        kLdrDyldExePath[cch++] = ';';
+        kHlpGetEnv("PATH", &kLdrDyldExePath[cch], sizeof(kLdrDyldExePath) - cch);
+    }
+    return kldrDyldFindEnumeratePath(kLdrDyldExePath, &Args);
+}
+
+
+/**
+ * Try open the specfied file.
+ *
+ * @returns 0 on success and *ppMod pointing to the new module.
+ * @returns KLDR_ERR_MODULE_NOT_FOUND if the specified file couldn't be opened.
+ * @returns non-zero kLdr or OS specific status code on other failures.
+ * @param   pszFilename     The filename.
+ * @param   ppRdr           Where to store the pointer to the new module.
+ */
+static int kldrDyldFindTryOpen(const char *pszFilename, PPKRDR ppRdr)
+{
+    int rc;
+
+    /*
+     * Try open the file.
+     */
+    rc = kRdrOpen(ppRdr, pszFilename);
+    if (!rc)
+        return 0;
+    /** @todo deal with return codes properly. */
+    if (rc >= KERR_BASE && rc <= KERR_END)
+        return rc;
+
+    return KLDR_ERR_MODULE_NOT_FOUND;
+}
+
+
+/**
+ * Composes a filename from the specified directory path,
+ * prefix (optional), name and suffix (optional, will try with and without).
+ *
+ * @param   pchPath     The directory path - this doesn't have to be null terminated.
+ * @param   cchPath     The length of the path.
+ * @param   pArgs       The search argument structure.
+ *
+ * @returns See kldrDyldFindTryOpen
+ */
+static int kldrDyldFindTryOpenPath(const char *pchPath, KSIZE cchPath, PCKLDRDYLDFINDARGS pArgs)
+{
+    static char s_szFilename[1024];
+    char *psz;
+    int rc;
+
+    /*
+     * Ignore any attempts at opening empty paths.
+     * This can happen when a *Dir globals is empty.
+     */
+    if (!cchPath)
+        return KLDR_ERR_MODULE_NOT_FOUND; /* ignore */
+
+    /*
+     * Limit check first.
+     */
+    if (cchPath + 1 + pArgs->cchMaxLength >= sizeof(s_szFilename))
+    {
+        KLDRDYLDFIND_ASSERT(!"too long");
+        return KLDR_ERR_MODULE_NOT_FOUND; /* ignore */
+    }
+
+    /*
+     * The directory path.
+     */
+    kHlpMemCopy(s_szFilename, pchPath, cchPath);
+    psz = &s_szFilename[cchPath];
+    if (psz[-1] != '/'
+#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS
+        && psz[-1] != '\\'
+        && psz[-1] != ':'
+#endif
+        )
+        *psz++ = '/';
+
+    /*
+     * The name.
+     */
+    if (pArgs->cchPrefix)
+    {
+        kHlpMemCopy(psz, pArgs->pszPrefix, pArgs->cchPrefix);
+        psz += pArgs->cchPrefix;
+    }
+    kHlpMemCopy(psz, pArgs->pszName, pArgs->cchName);
+    psz += pArgs->cchName;
+    if (pArgs->cchSuffix)
+    {
+        kHlpMemCopy(psz, pArgs->pszSuffix, pArgs->cchSuffix);
+        psz += pArgs->cchSuffix;
+    }
+    *psz = '\0';
+
+
+    /*
+     * Try open it.
+     */
+    rc = kldrDyldFindTryOpen(s_szFilename, pArgs->ppRdr);
+    /* If we're opening an executable, try again without the suffix.*/
+    if (    rc
+        &&  pArgs->cchSuffix
+        &&  (pArgs->fFlags & KLDRDYLD_LOAD_FLAGS_EXECUTABLE))
+    {
+        psz -= pArgs->cchSuffix;
+        *psz = '\0';
+        rc = kldrDyldFindTryOpen(s_szFilename, pArgs->ppRdr);
+    }
+    return rc;
+}
+
+
+/**
+ * Enumerates the specfied path.
+ *
+ * @returns Any return code from the kldrDyldFindTryOpenPath() which isn't KLDR_ERR_MODULE_NOT_FOUND.
+ * @returns KLDR_ERR_MODULE_NOT_FOUND if the end of the search path was reached.
+ * @param   pszSearchPath   The search path to enumeare.
+ * @param   pArgs       The search argument structure.
+ */
+static int kldrDyldFindEnumeratePath(const char *pszSearchPath, PCKLDRDYLDFINDARGS pArgs)
+{
+    const char *psz = pszSearchPath;
+    for (;;)
+    {
+        const char *pszEnd;
+        KSIZE       cchPath;
+
+        /*
+         * Trim.
+         */
+        while (*psz == ';' || *psz == ':')
+            psz++;
+        if (*psz == '\0')
+            return KLDR_ERR_MODULE_NOT_FOUND;
+
+        /*
+         * Find the end.
+         */
+        pszEnd = psz + 1;
+        while (     *pszEnd != '\0'
+               &&   *pszEnd != ';'
+#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS
+               && (     *pszEnd != ':'
+                   ||   (   pszEnd - psz == 1
+                         && (   (*psz >= 'A' && *psz <= 'Z')
+                             || (*psz >= 'a' && *psz <= 'z')
+                            )
+                        )
+                  )
+#else
+               && *pszEnd != ':'
+#endif
+              )
+            pszEnd++;
+
+        /*
+         * If not empty path, try open the module using it.
+         */
+        cchPath = pszEnd - psz;
+        if (cchPath > 0)
+        {
+            int rc;
+            rc = kldrDyldFindTryOpenPath(psz, cchPath, pArgs);
+            if (rc != KLDR_ERR_MODULE_NOT_FOUND)
+                return rc;
+        }
+
+        /* next */
+        psz = pszEnd;
+    }
+}
+
+
+/**
+ * Resolve default search method, prefix and suffix.
+ *
+ * @returns 0 on success, KERR_INVALID_PARAMETER on failure.
+ * @param   penmSearch  The search method. In/Out.
+ * @param   ppszPrefix  The prefix. In/Out.
+ * @param   ppszSuffix  The suffix. In/Out.
+ * @param   pszName     The name. In.
+ * @param   fFlags      The load/search flags.
+ */
+static int kldrDyldFindGetDefaults(KLDRDYLDSEARCH *penmSearch, const char **ppszPrefix, const char **ppszSuffix,
+                                   const char *pszName, KU32 fFlags)
+{
+    unsigned fCaseSensitive;
+
+    /*
+     * Fixup search method alias.
+     */
+    if (*penmSearch == KLDRDYLD_SEARCH_HOST)
+#if K_OS == K_OS_DARWIN
+        /** @todo *penmSearch = KLDRDYLD_SEARCH_DARWIN; */
+        *penmSearch = KLDRDYLD_SEARCH_UNIX_COMMON;
+#elif K_OS == K_OS_FREEBSD \
+   || K_OS == K_OS_LINUX \
+   || K_OS == K_OS_NETBSD \
+   || K_OS == K_OS_OPENBSD \
+   || K_OS == K_OS_SOLARIS
+        *penmSearch = KLDRDYLD_SEARCH_UNIX_COMMON;
+#elif K_OS == K_OS_OS2
+        *penmSearch = KLDRDYLD_SEARCH_OS2;
+#elif K_OS == K_OS_WINDOWS
+        *penmSearch = KLDRDYLD_SEARCH_WINDOWS;
+#else
+# error "Port me"
+#endif
+
+    /*
+     * Apply search method specific prefix/suffix.
+     */
+    switch (*penmSearch)
+    {
+        case KLDRDYLD_SEARCH_KLDR:
+            if (!*ppszPrefix && kLdrDyldDefPrefix[0])
+                *ppszPrefix = kLdrDyldDefPrefix;
+            if (!*ppszSuffix && kLdrDyldDefSuffix[0])
+                *ppszSuffix = kLdrDyldDefSuffix;
+            fCaseSensitive = 1;
+            break;
+
+        case KLDRDYLD_SEARCH_OS2:
+            if (!*ppszSuffix)
+                *ppszSuffix = !(fFlags & KLDRDYLD_LOAD_FLAGS_EXECUTABLE) ? ".dll" : ".exe";
+            fCaseSensitive = 0;
+            break;
+
+        case KLDRDYLD_SEARCH_WINDOWS:
+        case KLDRDYLD_SEARCH_WINDOWS_ALTERED:
+            if (!*ppszSuffix)
+                *ppszSuffix = !(fFlags & KLDRDYLD_LOAD_FLAGS_EXECUTABLE) ? ".dll" : ".exe";
+            fCaseSensitive = 0;
+            break;
+
+        case KLDRDYLD_SEARCH_UNIX_COMMON:
+            fCaseSensitive = 1;
+            break;
+
+        default:
+            KLDRDYLDFIND_ASSERT(!"invalid search method");
+            return KERR_INVALID_PARAMETER;
+    }
+
+    /*
+     * Drop the suffix if it's already included in the name.
+     */
+    if (*ppszSuffix)
+    {
+        const KSIZE cchName = kHlpStrLen(pszName);
+        const KSIZE cchSuffix = kHlpStrLen(*ppszSuffix);
+        if (    cchName > cchSuffix
+            &&  (   fCaseSensitive
+                 ?  !kHlpMemComp(pszName + cchName - cchSuffix, *ppszSuffix, cchSuffix)
+                 :  !kHlpMemICompAscii(pszName + cchName - cchSuffix, *ppszSuffix, cchSuffix))
+           )
+            *ppszSuffix = NULL;
+    }
+
+    return 0;
+}
+
+
+/**
+ * Locates an already open module using the specified search method.
+ *
+ * @returns 0 and *ppMod on success, non-zero OS specific error on failure.
+ *
+ * @param   pszName         Partial or complete name, it's specific to the search method to determin which.
+ * @param   pszPrefix       Prefix than can be used when searching.
+ * @param   pszSuffix       Suffix than can be used when searching.
+ * @param   enmSearch       The file search method to apply.
+ * @param   fFlags          Search flags.
+ * @param   ppMod           Where to store the file provider instance on success.
+ */
+int kldrDyldFindExistingModule(const char *pszName, const char *pszPrefix, const char *pszSuffix,
+                               KLDRDYLDSEARCH enmSearch, unsigned fFlags, PPKLDRDYLDMOD ppMod)
+{
+
+    int rc;
+    unsigned fOS2LibpathStrict;
+    *ppMod = NULL;
+
+    /*
+     * Don't bother if no modules are loaded yet.
+     */
+    if (!kLdrDyldHead)
+        return KLDR_ERR_MODULE_NOT_FOUND;
+
+    /*
+     * Defaults.
+     */
+    rc = kldrDyldFindGetDefaults(&enmSearch, &pszPrefix, &pszSuffix, pszName, fFlags);
+    if (rc)
+        return rc;
+
+    /*
+     * If this isn't just a filename, the caller has specified a file
+     * that should be opened directly and not a module name to be searched for.
+     *
+     * In order to do the right thing we'll have to open the file and get the
+     * correct filename for it.
+     *
+     * The OS/2 libpath strict method require us to find the correct DLL first.
+     */
+    fOS2LibpathStrict = 0;
+    if (    !kHlpIsFilenameOnly(pszName)
+        ||  (fOS2LibpathStrict = (   enmSearch == KLDRDYLD_SEARCH_OS2
+                                  && kLdrDyldOS2LibpathStrict[0] == 'T')
+            )
+       )
+    {
+        PKRDR pRdr;
+        if (fOS2LibpathStrict)
+            rc = kldrDyldFindDoDllSearch(pszName, pszPrefix, pszSuffix, enmSearch, fFlags, &pRdr);
+        else
+            rc = kldrDyldFindTryOpen(pszName, &pRdr);
+        if (!rc)
+        {
+            /* do a filename based search. */
+            const char     *pszFilename = kRdrName(pRdr);
+            const KSIZE     cchFilename = kHlpStrLen(pszFilename);
+            PKLDRDYLDMOD    pCur;
+            rc = KLDR_ERR_MODULE_NOT_FOUND;
+            for (pCur = kLdrDyldHead; pCur; pCur = pCur->Load.pNext)
+            {
+                if (    pCur->pMod->cchFilename == cchFilename
+                    &&  !kHlpMemComp(pCur->pMod->pszFilename, pszFilename, cchFilename))
+                {
+                    *ppMod = pCur;
+                    rc = 0;
+                    break;
+                }
+            }
+            kRdrClose(pRdr);
+        }
+    }
+    else
+    {
+        const KSIZE     cchName = kHlpStrLen(pszName);
+        const KSIZE     cchPrefix = pszPrefix ? kHlpStrLen(pszPrefix) : 0;
+        const KSIZE     cchSuffix = pszSuffix ? kHlpStrLen(pszSuffix) : 0;
+        const char     *pszNameSuffix = kHlpGetSuff(pszName);
+        PKLDRDYLDMOD    pCur = kLdrDyldHead;
+
+        /*
+         * Some of the methods are case insensitive (ASCII), others are case sensitive.
+         * To avoid having todo indirect calls to the compare functions here, we split
+         * ways even if it means a lot of duplicate code.
+         */
+        if (   enmSearch == KLDRDYLD_SEARCH_OS2
+            || enmSearch == KLDRDYLD_SEARCH_WINDOWS
+            || enmSearch == KLDRDYLD_SEARCH_WINDOWS_ALTERED)
+        {
+            const unsigned fNameHasSuffix = pszNameSuffix
+                                         && kHlpStrLen(pszNameSuffix) == cchSuffix
+                                         && !kHlpMemICompAscii(pszNameSuffix, pszName + cchName - cchSuffix, cchSuffix);
+            for (; pCur; pCur = pCur->Load.pNext)
+            {
+                /* match global / specific */
+                if (    !pCur->fGlobalOrSpecific
+                    &&  !(fFlags & KLDRYDLD_LOAD_FLAGS_SPECIFIC_MODULE))
+                    continue;
+
+                /* match name */
+                if (    pCur->pMod->cchName == cchName
+                    &&  !kHlpMemICompAscii(pCur->pMod->pszName, pszName, cchName))
+                    break;
+                if (cchPrefix)
+                {
+                    if (    pCur->pMod->cchName == cchName + cchPrefix
+                        &&  !kHlpMemICompAscii(pCur->pMod->pszName, pszPrefix, cchPrefix)
+                        &&  !kHlpMemICompAscii(pCur->pMod->pszName + cchPrefix, pszName, cchName))
+                    break;
+                }
+                if (cchSuffix)
+                {
+                    if (    pCur->pMod->cchName == cchName + cchSuffix
+                        &&  !kHlpMemICompAscii(pCur->pMod->pszName + cchName, pszSuffix, cchSuffix)
+                        &&  !kHlpMemICompAscii(pCur->pMod->pszName, pszName, cchName))
+                    break;
+                    if (    fNameHasSuffix
+                        &&  pCur->pMod->cchName == cchName - cchSuffix
+                        &&  !kHlpMemICompAscii(pCur->pMod->pszName, pszName, cchName - cchSuffix))
+                    break;
+                    if (cchPrefix)
+                    {
+                        if (    pCur->pMod->cchName == cchName + cchPrefix + cchSuffix
+                            &&  !kHlpMemICompAscii(pCur->pMod->pszName, pszPrefix, cchPrefix)
+                            &&  !kHlpMemICompAscii(pCur->pMod->pszName + cchPrefix, pszName, cchName)
+                            &&  !kHlpMemICompAscii(pCur->pMod->pszName + cchPrefix + cchName, pszSuffix, cchSuffix))
+                        break;
+                        if (    fNameHasSuffix
+                            &&  pCur->pMod->cchName == cchName + cchPrefix - cchSuffix
+                            &&  !kHlpMemICompAscii(pCur->pMod->pszName, pszPrefix, cchPrefix)
+                            &&  !kHlpMemICompAscii(pCur->pMod->pszName + cchPrefix, pszName, cchName - cchSuffix))
+                        break;
+                    }
+                }
+            }
+        }
+        else
+        {
+            const unsigned fNameHasSuffix = pszNameSuffix
+                                         && kHlpStrLen(pszNameSuffix) == cchSuffix
+                                         && kHlpMemComp(pszNameSuffix, pszName + cchName - cchSuffix, cchSuffix);
+            for (; pCur; pCur = pCur->Load.pNext)
+            {
+                /* match global / specific */
+                if (    !pCur->fGlobalOrSpecific
+                    &&  !(fFlags & KLDRYDLD_LOAD_FLAGS_SPECIFIC_MODULE))
+                    continue;
+
+                /* match name */
+                if (    pCur->pMod->cchName == cchName
+                    &&  !kHlpMemComp(pCur->pMod->pszName, pszName, cchName))
+                    break;
+                if (cchPrefix)
+                {
+                    if (    pCur->pMod->cchName == cchName + cchPrefix
+                        &&  !kHlpMemComp(pCur->pMod->pszName, pszPrefix, cchPrefix)
+                        &&  !kHlpMemComp(pCur->pMod->pszName + cchPrefix, pszName, cchName))
+                    break;
+                }
+                if (cchSuffix)
+                {
+                    if (    pCur->pMod->cchName == cchName + cchSuffix
+                        &&  !kHlpMemComp(pCur->pMod->pszName + cchName, pszSuffix, cchSuffix)
+                        &&  !kHlpMemComp(pCur->pMod->pszName, pszName, cchName))
+                    break;
+                    if (    fNameHasSuffix
+                        &&  pCur->pMod->cchName == cchName - cchSuffix
+                        &&  !kHlpMemComp(pCur->pMod->pszName, pszName, cchName - cchSuffix))
+                    break;
+                    if (cchPrefix)
+                    {
+                        if (    pCur->pMod->cchName == cchName + cchPrefix + cchSuffix
+                            &&  !kHlpMemComp(pCur->pMod->pszName, pszPrefix, cchPrefix)
+                            &&  !kHlpMemComp(pCur->pMod->pszName + cchPrefix, pszName, cchName)
+                            &&  !kHlpMemComp(pCur->pMod->pszName + cchPrefix + cchName, pszSuffix, cchSuffix))
+                        break;
+                        if (    pCur->pMod->cchName == cchName + cchPrefix - cchSuffix
+                            &&  !kHlpMemComp(pCur->pMod->pszName, pszPrefix, cchPrefix)
+                            &&  !kHlpMemComp(pCur->pMod->pszName + cchPrefix, pszName, cchName - cchSuffix))
+                        break;
+                    }
+                }
+            }
+        }
+
+        /* search result. */
+        if (pCur)
+        {
+            *ppMod = pCur;
+            rc = 0;
+        }
+        else
+            rc = KLDR_ERR_MODULE_NOT_FOUND;
+    }
+
+    return rc;
+}
+
diff --git a/src/lib/kStuff/kLdr/kLdrDyldMod.c b/src/lib/kStuff/kLdr/kLdrDyldMod.c
new file mode 100644
index 0000000..b25f6fc
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrDyldMod.c
@@ -0,0 +1,1300 @@
+/* $Id: kLdrDyldMod.c 81 2016-08-18 22:10:38Z bird $ */
+/** @file
+ * kLdr - The Dynamic Loader, Dyld module methods.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kLdr.h>
+#include "kLdrInternal.h"
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** @def KLDRDYLDMOD_STRICT
+ * Define KLDRDYLDMOD_STRICT to enabled strict checks in kLdrDyld. */
+#define KLDRDYLDMOD_STRICT 1
+
+/** @def KLDRDYLDMOD_ASSERT
+ * Assert that an expression is true when KLDRDYLD_STRICT is defined.
+ */
+#ifdef KLDRDYLDMOD_STRICT
+# define KLDRDYLDMOD_ASSERT(expr)  kHlpAssert(expr)
+#else
+# define KLDRDYLDMOD_ASSERT(expr)  do {} while (0)
+#endif
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static void kldrDyldModUnlink(PKLDRDYLDMOD pMod);
+
+
+
+/**
+ * Creates a module from the specified file provider instance.
+ *
+ * @returns 0 on success and *ppMod pointing to the new instance.
+ *          On failure a non-zero kLdr status code is returned.
+ * @param   pRdr    The file provider instance.
+ * @param   fFlags  Load/search flags.
+ * @param   ppMod   Where to put the pointer to the new module on success.
+ */
+int kldrDyldModCreate(PKRDR pRdr, KU32 fFlags, PPKLDRDYLDMOD ppMod)
+{
+    PKLDRDYLDMOD pMod;
+    PKLDRMOD pRawMod;
+    int rc;
+
+    *ppMod = NULL;
+
+/** @todo deal with fFlags (exec/dll) */
+/** @todo Check up the cpu architecture. */
+
+    /*
+     * Try open an module interpreter.
+     */
+    rc = kLdrModOpenFromRdr(pRdr, 0 /*fFlags*/, KCPUARCH_UNKNOWN, &pRawMod);
+    if (rc)
+        return kldrDyldFailure(rc, "%s: %rc", kRdrName(pRdr), rc);
+
+    /*
+     * Match the module aginst the load flags.
+     */
+    switch (pRawMod->enmType)
+    {
+        case KLDRTYPE_EXECUTABLE_FIXED:
+        case KLDRTYPE_EXECUTABLE_RELOCATABLE:
+        case KLDRTYPE_EXECUTABLE_PIC:
+            if (!(fFlags & KLDRDYLD_LOAD_FLAGS_EXECUTABLE))
+            {
+                kLdrModClose(pRawMod);
+                return KLDR_ERR_NOT_EXE;
+            }
+            break;
+
+        case KLDRTYPE_OBJECT: /* We can handle these as DLLs. */
+        case KLDRTYPE_SHARED_LIBRARY_FIXED:
+        case KLDRTYPE_SHARED_LIBRARY_RELOCATABLE:
+        case KLDRTYPE_SHARED_LIBRARY_PIC:
+        case KLDRTYPE_FORWARDER_DLL:
+            if (fFlags & KLDRDYLD_LOAD_FLAGS_EXECUTABLE)
+            {
+                kLdrModClose(pRawMod);
+                return KLDR_ERR_NOT_DLL;
+            }
+            break;
+
+        default:
+            KLDRDYLDMOD_ASSERT(!"Bad enmType!");
+        case KLDRTYPE_CORE:
+            return fFlags & KLDRDYLD_LOAD_FLAGS_EXECUTABLE ? KLDR_ERR_NOT_EXE : KLDR_ERR_NOT_DLL;
+    }
+
+    /*
+     * Allocate a new dyld module.
+     */
+    pMod = (PKLDRDYLDMOD)kHlpAlloc(sizeof(*pMod));
+    if (pMod)
+    {
+        pMod->enmState = KLDRSTATE_OPEN;
+        pMod->pMod = pRawMod;
+        pMod->hMod = pMod;
+        pMod->cDepRefs = pMod->cDynRefs = pMod->cRefs = 0;
+        switch (pRawMod->enmType)
+        {
+            case KLDRTYPE_EXECUTABLE_FIXED:
+            case KLDRTYPE_EXECUTABLE_RELOCATABLE:
+            case KLDRTYPE_EXECUTABLE_PIC:
+                pMod->fExecutable = 1;
+                break;
+            default:
+                pMod->fExecutable = 0;
+                break;
+        }
+        pMod->fGlobalOrSpecific = 0;
+        pMod->fBindable = 0;
+        pMod->fInitList = 0;
+        pMod->fAlreadySeen = 0;
+        pMod->fMapped = 0;
+        pMod->fAllocatedTLS = 0;
+        pMod->f25Reserved = 0;
+        pMod->InitTerm.pNext = NULL;
+        pMod->InitTerm.pPrev = NULL;
+        pMod->Bind.pNext = NULL;
+        pMod->Bind.pPrev = NULL;
+        pMod->cPrereqs = 0;
+        pMod->papPrereqs = NULL;
+        pMod->u32MagicHead = KLDRDYMOD_MAGIC;
+        pMod->u32MagicTail = KLDRDYMOD_MAGIC;
+
+        /* it. */
+        pMod->Load.pNext = NULL;
+        pMod->Load.pPrev = kLdrDyldTail;
+        if (kLdrDyldTail)
+            kLdrDyldTail->Load.pNext = pMod;
+        else
+            kLdrDyldHead = pMod;
+        kLdrDyldTail = pMod;
+
+        /* deal with the remaining flags. */
+        if (fFlags & KLDRYDLD_LOAD_FLAGS_SPECIFIC_MODULE)
+            kldrDyldModMarkSpecific(pMod);
+        else
+            kldrDyldModMarkGlobal(pMod);
+
+        if (fFlags & KLDRYDLD_LOAD_FLAGS_GLOBAL_SYMBOLS)
+            kldrDyldModSetBindable(pMod, 0 /* not deep binable */);
+        else
+            kldrDyldModClearBindable(pMod);
+
+        /*
+         * We're good.
+         */
+        *ppMod = pMod;
+        rc = 0;
+    }
+    else
+    {
+        kLdrModClose(pRawMod);
+        rc = KERR_NO_MEMORY;
+    }
+    return rc;
+}
+
+
+/**
+ * Creates a module for a native module.
+ *
+ * @returns 0 on success and *ppMod pointing to the new instance.
+ *          On failure a non-zero kLdr status code is returned.
+ * @param   hNativeModule   The native handle.
+ * @param   ppMod           Where to put the pointer to the new module on success.
+ * @remark  This function ain't finalized yet.
+ */
+int kldrDyldModCreateNative(KUPTR hNativeModule)
+{
+#if 0
+    /*
+     * Check if this module is already loaded by the native OS loader.
+     */
+    rc = kld
+    {
+#if K_OS == K_OS_OS2
+    HMODULE hmod = NULLHANDLE;
+    APIRET rc = DosQueryModuleHandle(kRdrName(pRdr), &hmod);
+    if (!rc)
+
+#elif K_OS == K_OS_WINDOWS
+    HMODULE hmod = NULL;
+    if (GetModuleHandle(kRdrName(pRdr))
+
+#else
+# error "Port me"
+#endif
+    }
+#endif
+    return -1;
+}
+
+
+/**
+ * Destroys a module pending destruction.
+ *
+ * @param   pMod        The module in question.
+ */
+void kldrDyldModDestroy(PKLDRDYLDMOD pMod)
+{
+    int rc;
+
+    /*
+     * Validate the state.
+     */
+    switch (pMod->enmState)
+    {
+        case KLDRSTATE_PENDING_DESTROY:
+        case KLDRSTATE_GC:
+            break;
+        default:
+            KLDRDYLDMOD_ASSERT(!"Invalid state");
+            break;
+    }
+    KLDRDYLDMOD_ASSERT(!pMod->fInitList);
+    KLDRDYLDMOD_ASSERT(!pMod->cDynRefs);
+    KLDRDYLDMOD_ASSERT(!pMod->cDepRefs);
+
+    /*
+     * Ensure that the module is unmapped.
+     */
+    if (pMod->fAllocatedTLS)
+    {
+        kLdrModFreeTLS(pMod->pMod, KLDRMOD_INT_MAP);
+        pMod->fAllocatedTLS = 0;
+    }
+    if (pMod->fMapped)
+    {
+        rc = kLdrModUnmap(pMod->pMod); KLDRDYLDMOD_ASSERT(!rc);
+        pMod->fMapped = 0;
+    }
+
+    /*
+     * Ensure it's unlinked from all chains.
+     */
+    if (pMod->enmState < KLDRSTATE_PENDING_DESTROY)
+        kldrDyldModUnlink(pMod);
+
+    /*
+     * Free everything associated with the module.
+     */
+    /* the prerequisite array. */
+    if (pMod->papPrereqs)
+    {
+        KU32 i = pMod->cPrereqs;
+        while (i-- > 0)
+        {
+            KLDRDYLDMOD_ASSERT(pMod->papPrereqs[i] == NULL);
+            pMod->papPrereqs[i] = NULL;
+        }
+
+        kHlpFree(pMod->papPrereqs);
+        pMod->papPrereqs = NULL;
+        pMod->cPrereqs = 0;
+    }
+
+    /* the module interpreter.  */
+    if (pMod->pMod)
+    {
+        rc = kLdrModClose(pMod->pMod); KLDRDYLDMOD_ASSERT(!rc);
+        pMod->pMod = NULL;
+    }
+
+
+    /*
+     * Finally, change the module state and free the module if
+     * there are not more references to it. If somebody is still
+     * referencing it, postpone the freeing to Deref.
+     */
+    pMod->enmState = KLDRSTATE_DESTROYED;
+    if (!pMod->cRefs)
+    {
+        pMod->u32MagicHead = 1;
+        pMod->u32MagicTail = 2;
+        kHlpFree(pMod);
+    }
+}
+
+
+/**
+ * Unlinks the module from any list it might be in.
+ * It is assumed that the module is at least linked into the load list.
+ *
+ * @param   pMod    The moduel.
+ */
+static void kldrDyldModUnlink(PKLDRDYLDMOD pMod)
+{
+    /* load list */
+    if (pMod->Load.pNext)
+        pMod->Load.pNext->Load.pPrev = pMod->Load.pPrev;
+    else
+        kLdrDyldTail = pMod->Load.pPrev;
+    if (pMod->Load.pPrev)
+        pMod->Load.pPrev->Load.pNext = pMod->Load.pNext;
+    else
+        kLdrDyldHead = pMod->Load.pNext;
+
+    /* bind list */
+    if (pMod->fBindable)
+        kldrDyldModClearBindable(pMod);
+
+    /* init term */
+    if (pMod->fInitList)
+    {
+        KLDRDYLDMOD_ASSERT(pMod->enmState < KLDRSTATE_INITIALIZATION_FAILED);
+        pMod->fInitList = 0;
+        if (pMod->InitTerm.pNext)
+            pMod->InitTerm.pNext->InitTerm.pPrev = pMod->InitTerm.pPrev;
+        else
+            g_pkLdrDyldInitTail = pMod->InitTerm.pPrev;
+        if (pMod->InitTerm.pPrev)
+            pMod->InitTerm.pPrev->InitTerm.pNext = pMod->InitTerm.pNext;
+        else
+            g_pkLdrDyldInitHead = pMod->InitTerm.pNext;
+    }
+    else if (pMod->enmState > KLDRSTATE_INITIALIZATION_FAILED)
+    {
+        KLDRDYLDMOD_ASSERT(pMod->enmState >= KLDRSTATE_GOOD);
+        if (pMod->InitTerm.pNext)
+            pMod->InitTerm.pNext->InitTerm.pPrev = pMod->InitTerm.pPrev;
+        else
+            g_pkLdrDyldTermTail = pMod->InitTerm.pPrev;
+        if (pMod->InitTerm.pPrev)
+            pMod->InitTerm.pPrev->InitTerm.pNext = pMod->InitTerm.pNext;
+        else
+            g_pkLdrDyldTermHead = pMod->InitTerm.pNext;
+    }
+    pMod->InitTerm.pNext = NULL;
+    pMod->InitTerm.pPrev = NULL;
+}
+
+
+/**
+ * Marks a module as bindable, i.e. it'll be considered when
+ * resolving names the unix way.
+ *
+ * @param   pMod    The module.
+ * @param   fDeep   When set the module will be inserted at the head of the
+ *                  module list used to resolve symbols. This means that the
+ *                  symbols in this module will be prefered of all the other
+ *                  modules.
+ */
+void kldrDyldModSetBindable(PKLDRDYLDMOD pMod, unsigned fDeep)
+{
+    KLDRDYLDMOD_ASSERT(pMod->enmState >= KLDRSTATE_OPEN && pMod->enmState < KLDRSTATE_PENDING_GC);
+    if (!pMod->fBindable)
+    {
+        pMod->fBindable = 1;
+        if (!fDeep)
+        {
+            pMod->Bind.pNext = NULL;
+            pMod->Bind.pPrev = g_pkLdrDyldBindTail;
+            if (g_pkLdrDyldBindTail)
+                g_pkLdrDyldBindTail->Bind.pNext = pMod;
+            else
+                g_pkLdrDyldBindHead = pMod;
+            g_pkLdrDyldBindTail = pMod;
+        }
+        else
+        {
+            pMod->Bind.pPrev = NULL;
+            pMod->Bind.pNext = g_pkLdrDyldBindHead;
+            if (g_pkLdrDyldBindHead)
+                g_pkLdrDyldBindHead->Bind.pPrev = pMod;
+            else
+                g_pkLdrDyldBindTail = pMod;
+            g_pkLdrDyldBindHead = pMod;
+        }
+    }
+}
+
+
+/**
+ * Marks a module as not bindable, i.e. it will not be considered when
+ * resolving names the unix way.
+ *
+ * @param   pMod    The module.
+ */
+void kldrDyldModClearBindable(PKLDRDYLDMOD pMod)
+{
+    KLDRDYLDMOD_ASSERT(pMod->enmState >= KLDRSTATE_OPEN && pMod->enmState < KLDRSTATE_PENDING_DESTROY);
+    if (pMod->fBindable)
+    {
+        pMod->fBindable = 0;
+        if (pMod->Bind.pPrev)
+            pMod->Bind.pPrev->Bind.pNext = pMod->Bind.pNext;
+        else
+            g_pkLdrDyldBindHead = pMod->Bind.pNext;
+        if (pMod->Bind.pNext)
+            pMod->Bind.pNext->Bind.pPrev = pMod->Bind.pPrev;
+        else
+            g_pkLdrDyldBindTail = pMod->Bind.pPrev;
+        pMod->Bind.pNext = NULL;
+        pMod->Bind.pPrev = NULL;
+    }
+}
+
+
+/**
+ * Marks the module as global instead of being specific.
+ *
+ * A global module can be a matching result when the request
+ * doesn't specify a path. A specific module will not match
+ * unless the path also matches.
+ *
+ * @param   pMod    The module.
+ */
+void kldrDyldModMarkGlobal(PKLDRDYLDMOD pMod)
+{
+    pMod->fGlobalOrSpecific = 1;
+}
+
+
+/**
+ * Marks the module as specific instead of global.
+ *
+ * See kldrDyldModMarkGlobal for an explanation of the two terms.
+ *
+ * @param   pMod    The module.
+ */
+void kldrDyldModMarkSpecific(PKLDRDYLDMOD pMod)
+{
+    pMod->fGlobalOrSpecific = 0;
+}
+
+
+/**
+ * Adds a reference to the module making sure it won't be freed just yet.
+ *
+ * @param   pMod    The module.
+ */
+void kldrDyldModAddRef(PKLDRDYLDMOD pMod)
+{
+    pMod->cRefs++;
+}
+
+
+/**
+ * Dereference a module.
+ *
+ * @param   pMod
+ */
+void kldrDyldModDeref(PKLDRDYLDMOD pMod)
+{
+    /* validate input */
+    KLDRDYLDMOD_ASSERT(pMod->cRefs > 0);
+    KLDRDYLDMOD_ASSERT(pMod->cRefs >= pMod->cDepRefs + pMod->cDynRefs);
+    KLDRDYLDMOD_ASSERT(pMod->enmState > KLDRSTATE_INVALID && pMod->enmState <= KLDRSTATE_END);
+
+    /* decrement. */
+    if (pMod->cRefs > 0)
+        pMod->cRefs--;
+
+    /* execute delayed freeing. */
+    if (    pMod->enmState == KLDRSTATE_DESTROYED
+        &&  !pMod->cRefs)
+    {
+        pMod->u32MagicHead = 1;
+        pMod->u32MagicTail = 2;
+        kHlpFree(pMod);
+    }
+}
+
+
+/**
+ * Increment the count of modules depending on this module.
+ *
+ * @param   pMod    The module.
+ * @param   pDep    The module which depends on us.
+ */
+void kldrDyldModAddDep(PKLDRDYLDMOD pMod, PKLDRDYLDMOD pDep)
+{
+    (void)pDep;
+
+    /* validate state */
+    switch (pMod->enmState)
+    {
+        case KLDRSTATE_MAPPED:
+        case KLDRSTATE_RELOADED:
+        case KLDRSTATE_LOADED_PREREQUISITES:
+        case KLDRSTATE_RELOADED_LOADED_PREREQUISITES:
+        case KLDRSTATE_PENDING_INITIALIZATION:
+        case KLDRSTATE_INITIALIZING:
+        case KLDRSTATE_GOOD:
+            break;
+        default:
+            KLDRDYLDMOD_ASSERT(!"invalid state");
+            break;
+
+    }
+    KLDRDYLDMOD_ASSERT(pMod->enmState > KLDRSTATE_INVALID && pMod->enmState <= KLDRSTATE_END);
+    pMod->cRefs++;
+    pMod->cDepRefs++;
+}
+
+
+/**
+ * Drop a dependency.
+ *
+ * @param   pMod    The module.
+ * @param   pDep    The module which depends on us.
+ */
+void kldrDyldModRemoveDep(PKLDRDYLDMOD pMod, PKLDRDYLDMOD pDep)
+{
+    KLDRDYLDMOD_ASSERT(pMod->cDepRefs > 0);
+    if (pMod->cDepRefs == 0)
+        return;
+    KLDRDYLDMOD_ASSERT(pMod->cDepRefs <= pMod->cRefs);
+    KLDRDYLDMOD_ASSERT(pMod->enmState >= KLDRSTATE_MAPPED && pMod->enmState <= KLDRSTATE_PENDING_DESTROY);
+
+    pMod->cRefs--;
+    pMod->cDepRefs--;
+    if (    pMod->cDepRefs > 0
+        ||  pMod->cDynRefs > 0)
+        return;
+
+    /*
+     * The module should be unloaded.
+     */
+    kldrDyldModUnloadPrerequisites(pMod);
+}
+
+
+/**
+ * Increment the dynamic load count.
+ *
+ * @returns 0
+ * @param   pMod    The module.
+ */
+int kldrDyldModDynamicLoad(PKLDRDYLDMOD pMod)
+{
+    KLDRDYLDMOD_ASSERT(     pMod->enmState == KLDRSTATE_GOOD
+                       ||   pMod->enmState == KLDRSTATE_PENDING_INITIALIZATION
+                       ||   pMod->enmState == KLDRSTATE_INITIALIZING);
+    pMod->cRefs++;
+    pMod->cDynRefs++;
+    return 0;
+}
+
+
+/**
+ * Decrement the dynamic load count of the module and unload the module
+ * if the total reference count reaches zero.
+ *
+ * This may cause a cascade of unloading to occure. See kldrDyldModUnloadPrerequisites().
+ *
+ * @returns status code.
+ * @retval  0 on success.
+ * @retval  KLDR_ERR_NOT_LOADED_DYNAMICALLY if the module wasn't loaded dynamically.
+ * @param   pMod        The module to unload.
+ */
+int kldrDyldModDynamicUnload(PKLDRDYLDMOD pMod)
+{
+    if (pMod->cDynRefs == 0)
+        return KLDR_ERR_NOT_LOADED_DYNAMICALLY;
+    KLDRDYLDMOD_ASSERT(pMod->cDynRefs <= pMod->cRefs);
+    KLDRDYLDMOD_ASSERT(pMod->enmState == KLDRSTATE_GOOD);
+
+    pMod->cRefs--;
+    pMod->cDynRefs--;
+    if (    pMod->cDynRefs > 0
+        ||  pMod->cDepRefs > 0)
+        return 0;
+
+    /*
+     * The module should be unloaded.
+     */
+    kldrDyldModUnloadPrerequisites(pMod);
+    return 0;
+}
+
+
+/**
+ * Worker for kldrDyldModUnloadPrerequisites.
+ *
+ * @returns The number of modules that now can be unloaded.
+ * @param   pMod    The module in  question.
+ */
+static KU32 kldrDyldModUnloadPrerequisitesOne(PKLDRDYLDMOD pMod)
+{
+    PKLDRDYLDMOD    pMod2;
+    KU32            cToUnload = 0;
+    KU32            i;
+
+    KLDRDYLDMOD_ASSERT(pMod->papPrereqs || !pMod->cPrereqs);
+
+    /*
+     * Release the one in this module.
+     */
+    for (i = 0; i < pMod->cPrereqs; i++)
+    {
+        pMod2 = pMod->papPrereqs[i];
+        if (pMod2)
+        {
+            pMod->papPrereqs[i] = NULL;
+
+            /* do the derefering ourselves or we'll end up in a recursive loop here. */
+            KLDRDYLDMOD_ASSERT(pMod2->cDepRefs > 0);
+            KLDRDYLDMOD_ASSERT(pMod2->cRefs >= pMod2->cDepRefs);
+            pMod2->cDepRefs--;
+            pMod2->cRefs--;
+            cToUnload += !pMod2->cDepRefs && !pMod2->cDynRefs;
+        }
+    }
+
+    /*
+     * Change the state
+     */
+    switch (pMod->enmState)
+    {
+        case KLDRSTATE_LOADED_PREREQUISITES:
+        case KLDRSTATE_FIXED_UP:
+            pMod->enmState = KLDRSTATE_PENDING_DESTROY;
+            kldrDyldModUnlink(pMod);
+            break;
+
+        case KLDRSTATE_PENDING_INITIALIZATION:
+            pMod->enmState = KLDRSTATE_PENDING_GC;
+            break;
+
+        case KLDRSTATE_RELOADED_FIXED_UP:
+        case KLDRSTATE_RELOADED_LOADED_PREREQUISITES:
+        case KLDRSTATE_GOOD:
+            pMod->enmState = KLDRSTATE_PENDING_TERMINATION;
+            break;
+
+        case KLDRSTATE_INITIALIZATION_FAILED:
+            break;
+
+        default:
+            KLDRDYLDMOD_ASSERT(!"invalid state");
+            break;
+    }
+
+    return cToUnload;
+}
+
+
+/**
+ * This is the heart of the unload code.
+ *
+ * It will recursivly (using the load list) initiate module unloading
+ * of all affected modules.
+ *
+ * This function will cause a state transition to PENDING_DESTROY, PENDING_GC
+ * or PENDING_TERMINATION depending on the module state. There is one exception
+ * to this, and that's INITIALIZATION_FAILED, where the state will not be changed.
+ *
+ * @param   pMod        The module which prerequisites should be unloaded.
+ */
+void kldrDyldModUnloadPrerequisites(PKLDRDYLDMOD pMod)
+{
+    KU32            cToUnload;
+
+    /* sanity */
+#ifdef KLDRDYLD_STRICT
+    {
+    PKLDRDYLDMOD pMod2;
+    for (pMod2 = kLdrDyldHead; pMod2; pMod2 = pMod2->Load.pNext)
+        KLDRDYLDMOD_ASSERT(pMod2->enmState != KLDRSTATE_GOOD || pMod2->cRefs);
+    }
+#endif
+    KLDRDYLDMOD_ASSERT(pMod->papPrereqs);
+
+    /*
+     * Unload prereqs of the module we're called on first.
+     */
+    cToUnload = kldrDyldModUnloadPrerequisitesOne(pMod);
+
+    /*
+     * Iterate the load list in a cyclic manner until there are no more
+     * modules that can be pushed on into unloading.
+     */
+    while (cToUnload)
+    {
+        cToUnload = 0;
+        for (pMod = kLdrDyldHead; pMod; pMod = pMod->Load.pNext)
+        {
+            if (    pMod->cDepRefs
+                ||  pMod->cDynRefs
+                ||  pMod->enmState >= KLDRSTATE_PENDING_TERMINATION
+                ||  pMod->enmState < KLDRSTATE_LOADED_PREREQUISITES)
+                continue;
+            cToUnload += kldrDyldModUnloadPrerequisitesOne(pMod);
+        }
+    }
+}
+
+
+/**
+ * Loads the prerequisite modules this module depends on.
+ *
+ * To find each of the prerequisite modules this method calls
+ * kldrDyldGetPrerequisite() and it will make sure the modules
+ * are added to the load stack frame.
+ *
+ * @returns 0 on success, non-zero native OS or kLdr status code on failure.
+ *          The state is changed to LOADED_PREREQUISITES or RELOADED_LOADED_PREREQUISITES.
+ * @param   pMod            The module.
+ * @param   pszPrefix       Prefix to use when searching.
+ * @param   pszSuffix       Suffix to use when searching.
+ * @param   enmSearch       Method to use when locating the module and any modules it may depend on.
+ * @param   fFlags          Flags, a combintation of the KLDRYDLD_LOAD_FLAGS_* \#defines.
+ */
+int kldrDyldModLoadPrerequisites(PKLDRDYLDMOD pMod, const char *pszPrefix, const char *pszSuffix,
+                                 KLDRDYLDSEARCH enmSearch, unsigned fFlags)
+{
+    KI32    cPrereqs;
+    KU32    i;
+    int     rc = 0;
+
+    /* sanity */
+    switch (pMod->enmState)
+    {
+        case KLDRSTATE_MAPPED:
+        case KLDRSTATE_RELOADED:
+            break;
+        default:
+            KLDRDYLDMOD_ASSERT(!"invalid state");
+            return -1;
+    }
+
+    /*
+     * Query number of prerequiste modules and allocate the array.
+     */
+    cPrereqs = kLdrModNumberOfImports(pMod->pMod, NULL);
+    kHlpAssert(cPrereqs >= 0);
+    if (pMod->cPrereqs != cPrereqs)
+    {
+        KLDRDYLDMOD_ASSERT(!pMod->papPrereqs);
+        pMod->papPrereqs = (PPKLDRDYLDMOD)kHlpAllocZ(sizeof(pMod->papPrereqs[0]) * cPrereqs);
+        if (!pMod->papPrereqs)
+            return KERR_NO_MEMORY;
+        pMod->cPrereqs = cPrereqs;
+    }
+    else
+        KLDRDYLDMOD_ASSERT(pMod->papPrereqs || !pMod->cPrereqs);
+
+    /*
+     * Iterate the prerequisites and load them.
+     */
+    for (i = 0; i < pMod->cPrereqs; i++)
+    {
+        static char s_szPrereq[260];
+        PKLDRDYLDMOD pPrereqMod;
+
+        KLDRDYLDMOD_ASSERT(pMod->papPrereqs[i] == NULL);
+        rc = kLdrModGetImport(pMod->pMod, NULL, i, s_szPrereq, sizeof(s_szPrereq));
+        if (rc)
+            break;
+        rc = kldrDyldGetPrerequisite(s_szPrereq, pszPrefix, pszSuffix, enmSearch, fFlags, pMod, &pPrereqMod);
+        if (rc)
+            break;
+        pMod->papPrereqs[i] = pPrereqMod;
+    }
+
+    /* change the state regardless of what happend. */
+    if (pMod->enmState == KLDRSTATE_MAPPED)
+        pMod->enmState = KLDRSTATE_LOADED_PREREQUISITES;
+    else
+        pMod->enmState = KLDRSTATE_RELOADED_LOADED_PREREQUISITES;
+    return rc;
+}
+
+
+/**
+ * Maps an open module.
+ *
+ * On success the module will be in the MAPPED state.
+ *
+ * @returns 0 on success, non-zero native OS or kLdr status code on failure.
+ * @param   pMod    The module which needs to be unmapped and set pending for destruction.
+ */
+int kldrDyldModMap(PKLDRDYLDMOD pMod)
+{
+    int rc;
+
+    /* sanity */
+    KLDRDYLDMOD_ASSERT(pMod->enmState == KLDRSTATE_OPEN);
+    KLDRDYLDMOD_ASSERT(!pMod->fMapped);
+    if (pMod->fMapped)
+        return 0;
+
+    /* do the job. */
+    rc = kLdrModMap(pMod->pMod);
+    if (!rc)
+    {
+        rc = kLdrModAllocTLS(pMod->pMod, KLDRMOD_INT_MAP);
+        if (!rc)
+        {
+            /** @todo TLS */
+            pMod->fMapped = 1;
+            pMod->enmState = KLDRSTATE_MAPPED;
+        }
+        else
+            kLdrModUnmap(pMod->pMod);
+    }
+    return rc;
+}
+
+
+/**
+ * Unmaps the module, unlinks it from everywhere marks it PENDING_DESTROY.
+ *
+ * @returns 0 on success, non-zero native OS or kLdr status code on failure.
+ * @param   pMod    The module which needs to be unmapped and set pending for destruction.
+ */
+int kldrDyldModUnmap(PKLDRDYLDMOD pMod)
+{
+    int rc;
+
+    /* sanity */
+    KLDRDYLDMOD_ASSERT(pMod->cRefs > 0);
+    KLDRDYLDMOD_ASSERT(pMod->fMapped);
+    switch (pMod->enmState)
+    {
+        case KLDRSTATE_MAPPED:
+        case KLDRSTATE_GC:
+        case KLDRSTATE_PENDING_DESTROY:
+            break;
+        default:
+            KLDRDYLDMOD_ASSERT(!"invalid state");
+            return -1;
+    }
+
+    /* do the job. */
+    if (pMod->fAllocatedTLS)
+    {
+        kLdrModFreeTLS(pMod->pMod, KLDRMOD_INT_MAP);
+        pMod->fAllocatedTLS = 0;
+    }
+    rc = kLdrModUnmap(pMod->pMod);
+    if (!rc)
+    {
+        pMod->fMapped = 0;
+        if (pMod->enmState < KLDRSTATE_PENDING_DESTROY)
+        {
+            pMod->enmState = KLDRSTATE_PENDING_DESTROY;
+            kldrDyldModUnlink(pMod);
+        }
+    }
+
+    return rc;
+}
+
+
+/**
+ * Reloads the module.
+ *
+ * Reloading means that all modified pages are restored to their original
+ * state. Whether this includes the code segments depends on whether the fixups
+ * depend on the addend in the place they are fixing up - so it's format specific.
+ *
+ * @returns 0 on success, non-zero native OS or kLdr status code on failure.
+ * @param   pMod    The module which needs to be unmapped and set pending for destruction.
+ */
+int kldrDyldModReload(PKLDRDYLDMOD pMod)
+{
+    int rc;
+
+    /* sanity */
+    KLDRDYLDMOD_ASSERT(pMod->cRefs > 0);
+    KLDRDYLDMOD_ASSERT(pMod->fMapped);
+
+    switch (pMod->enmState)
+    {
+        case KLDRSTATE_MAPPED:
+        case KLDRSTATE_GC:
+        case KLDRSTATE_PENDING_DESTROY:
+            break;
+        default:
+            KLDRDYLDMOD_ASSERT(!"invalid state");
+            return -1;
+    }
+
+    /* Free TLS before reloading. */
+    if (pMod->fAllocatedTLS)
+    {
+        kLdrModFreeTLS(pMod->pMod, KLDRMOD_INT_MAP);
+        pMod->fAllocatedTLS = 0;
+    }
+
+    /* Let the module interpreter do the reloading of the mapping. */
+    rc = kLdrModReload(pMod->pMod);
+    if (!rc)
+    {
+        rc = kLdrModAllocTLS(pMod->pMod, KLDRMOD_INT_MAP);
+        if (!rc)
+        {
+            pMod->fAllocatedTLS = 1;
+            pMod->enmState = KLDRSTATE_RELOADED;
+        }
+    }
+    return rc;
+}
+
+
+/**
+ * @copydoc FNKLDRMODGETIMPORT
+ * pvUser points to the KLDRDYLDMOD.
+ */
+static int kldrDyldModFixupGetImportCallback(PKLDRMOD pMod, KU32 iImport, KU32 iSymbol,
+                                             const char *pchSymbol, KSIZE cchSymbol, const char *pszVersion,
+                                             PKLDRADDR puValue, KU32 *pfKind, void *pvUser)
+{
+    static int s_cRecursiveCalls = 0;
+    PKLDRDYLDMOD pDyldMod = (PKLDRDYLDMOD)pvUser;
+    int rc;
+
+    /* guard against too deep forwarder recursion. */
+    if (s_cRecursiveCalls >= 5)
+        return KLDR_ERR_TOO_LONG_FORWARDER_CHAIN;
+    s_cRecursiveCalls++;
+
+    if (iImport != NIL_KLDRMOD_IMPORT)
+    {
+        /* specific import module search. */
+        PKLDRDYLDMOD pPrereqMod;
+
+        KLDRDYLDMOD_ASSERT(iImport < pDyldMod->cPrereqs);
+        pPrereqMod = pDyldMod->papPrereqs[iImport];
+
+        KLDRDYLDMOD_ASSERT(pPrereqMod);
+        KLDRDYLDMOD_ASSERT(pPrereqMod->u32MagicHead == KLDRDYMOD_MAGIC);
+        KLDRDYLDMOD_ASSERT(pPrereqMod->u32MagicTail == KLDRDYMOD_MAGIC);
+        KLDRDYLDMOD_ASSERT(pPrereqMod->enmState < KLDRSTATE_TERMINATING);
+
+        rc = kLdrModQuerySymbol(pPrereqMod->pMod, NULL, KLDRMOD_BASEADDRESS_MAP,
+                                iSymbol, pchSymbol, cchSymbol, pszVersion,
+                                kldrDyldModFixupGetImportCallback, pPrereqMod, puValue, pfKind);
+        if (rc)
+        {
+            if (pchSymbol)
+                kldrDyldFailure(rc, "%s[%d]->%s.%.*s%s", pDyldMod->pMod->pszName, iImport,
+                                pPrereqMod->pMod->pszName, cchSymbol, pchSymbol, pszVersion ? pszVersion : "");
+            else
+                kldrDyldFailure(rc, "%s[%d]->%s.%d%s", pDyldMod->pMod->pszName, iImport,
+                                pPrereqMod->pMod->pszName, iSymbol, pszVersion ? pszVersion : "");
+        }
+    }
+    else
+    {
+        /* bind list search. */
+        unsigned fFound = 0;
+        PKLDRDYLDMOD pBindMod = g_pkLdrDyldBindHead;
+        rc = 0;
+        while (pBindMod)
+        {
+            KU32 fKind;
+            KLDRADDR uValue;
+            rc = kLdrModQuerySymbol(pBindMod->pMod, NULL, KLDRMOD_BASEADDRESS_MAP,
+                                    iSymbol, pchSymbol, cchSymbol, pszVersion,
+                                    kldrDyldModFixupGetImportCallback, pBindMod, &uValue, &fKind);
+            if (    !rc
+                &&  (   !fFound
+                     || !(fKind & KLDRSYMKIND_WEAK)
+                    )
+               )
+            {
+                *pfKind = fKind;
+                *puValue = uValue;
+                fFound = 1;
+                if (!(fKind & KLDRSYMKIND_WEAK))
+                    break;
+            }
+
+            /* next */
+            pBindMod = pBindMod->Bind.pNext;
+        }
+        rc = fFound ? 0 : KLDR_ERR_SYMBOL_NOT_FOUND;
+        if (!fFound)
+        {
+            if (pchSymbol)
+                kldrDyldFailure(rc, "%s->%.*s%s", pDyldMod->pMod->pszName, cchSymbol, pchSymbol, pszVersion ? pszVersion : "");
+            else
+                kldrDyldFailure(rc, "%s->%d%s", pDyldMod->pMod->pszName, iSymbol, pszVersion ? pszVersion : "");
+        }
+    }
+
+    s_cRecursiveCalls--;
+    return rc;
+}
+
+
+/**
+ * Applies fixups to a module which prerequisistes has been
+ * successfully loaded.
+ *
+ * @returns 0 on success, non-zero native OS or kLdr status code on failure.
+ * @param   pMod    The module which needs to be unmapped and set pending for destruction.
+ */
+int kldrDyldModFixup(PKLDRDYLDMOD pMod)
+{
+    int rc;
+
+    /* sanity */
+    KLDRDYLDMOD_ASSERT(pMod->cRefs > 0);
+    KLDRDYLDMOD_ASSERT(     pMod->enmState == KLDRSTATE_LOADED_PREREQUISITES
+                       ||   pMod->enmState == KLDRSTATE_RELOADED_LOADED_PREREQUISITES);
+
+    /* do the job */
+    rc = kLdrModFixupMapping(pMod->pMod, kldrDyldModFixupGetImportCallback, pMod);/** @todo fixme. */
+    if (!rc)
+        pMod->enmState = KLDRSTATE_FIXED_UP;
+    return rc;
+}
+
+
+/**
+ * Calls the module initialization entry point if any.
+ *
+ * This is considered to be a module specific thing and leave if
+ * to the module interpreter. They will have to deal with different
+ * module init practices between platforms should there be any.
+ *
+ * @returns 0 and state changed to GOOD on success.
+ *          Non-zero OS or kLdr status code and status changed to INITIALIZATION_FAILED on failure.
+ * @param   pMod        The module that should be initialized.
+ */
+int kldrDyldModCallInit(PKLDRDYLDMOD pMod)
+{
+    int rc;
+
+    KLDRDYLDMOD_ASSERT(pMod->enmState == KLDRSTATE_PENDING_INITIALIZATION);
+    KLDRDYLDMOD_ASSERT(!pMod->fInitList);
+
+    pMod->enmState = KLDRSTATE_INITIALIZING;
+    rc = kLdrModCallInit(pMod->pMod, KLDRMOD_INT_MAP, (KUPTR)pMod->hMod);
+    if (!rc)
+    {
+        pMod->enmState = KLDRSTATE_GOOD;
+        /* push it onto the termination list.*/
+        pMod->InitTerm.pPrev = NULL;
+        pMod->InitTerm.pNext = g_pkLdrDyldTermHead;
+        if (g_pkLdrDyldTermHead)
+            g_pkLdrDyldTermHead->InitTerm.pPrev = pMod;
+        else
+            g_pkLdrDyldTermTail = pMod;
+        g_pkLdrDyldTermHead = pMod;
+    }
+    else
+        pMod->enmState = KLDRSTATE_INITIALIZATION_FAILED;
+
+    return rc;
+}
+
+
+/**
+ * Calls the module termination entry point if any.
+ *
+ * This'll change the module status to PENDING_GC.
+ *
+ * @param   pMod        The module that should be initialized.
+ */
+void kldrDyldModCallTerm(PKLDRDYLDMOD pMod)
+{
+    KLDRDYLDMOD_ASSERT(pMod->enmState == KLDRSTATE_PENDING_TERMINATION);
+
+    pMod->enmState = KLDRSTATE_TERMINATING;
+    kLdrModCallTerm(pMod->pMod, KLDRMOD_INT_MAP, (KUPTR)pMod->hMod);
+    pMod->enmState = KLDRSTATE_PENDING_GC;
+    /* unlinking on destruction. */
+}
+
+
+/**
+ * Calls the thread attach entry point if any.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pMod        The module.
+ */
+int kldrDyldModAttachThread(PKLDRDYLDMOD pMod)
+{
+    KLDRDYLDMOD_ASSERT(pMod->enmState == KLDRSTATE_GOOD);
+
+    return kLdrModCallThread(pMod->pMod, KLDRMOD_INT_MAP, (KUPTR)pMod->hMod, 1 /* attach */);
+}
+
+
+/**
+ * Calls the thread detach entry point if any.
+ *
+ * @returns 0 on success, non-zero on failure.
+ * @param   pMod        The module.
+ */
+void kldrDyldModDetachThread(PKLDRDYLDMOD pMod)
+{
+    KLDRDYLDMOD_ASSERT(pMod->enmState == KLDRSTATE_GOOD);
+
+    kLdrModCallThread(pMod->pMod, KLDRMOD_INT_MAP, (KUPTR)pMod->hMod, 0 /* detach */);
+}
+
+
+/**
+ * Gets the main stack, allocate it if necessary.
+ *
+ * @returns 0 on success, non-zero native OS or kLdr status code on failure.
+ * @param   pMod        The module.
+ * @param   ppvStack    Where to store the address of the stack (lowest address).
+ * @param   pcbStack    Where to store the size of the stack.
+ */
+int kldrDyldModGetMainStack(PKLDRDYLDMOD pMod, void **ppvStack, KSIZE *pcbStack)
+{
+    int rc = 0;
+    KLDRSTACKINFO StackInfo;
+    KLDRDYLDMOD_ASSERT(pMod->fExecutable);
+
+    /*
+     * Since we might have to allocate the stack ourselves, and there will only
+     * ever be one main stack, we'll be keeping the main stack info in globals.
+     */
+    if (!g_fkLdrDyldDoneMainStack)
+    {
+        rc = kLdrModGetStackInfo(pMod->pMod, NULL, KLDRMOD_BASEADDRESS_MAP, &StackInfo);
+        if (!rc)
+        {
+            /* check if there is a stack size override/default. */
+            KSIZE cbDefOverride;
+            if (kHlpGetEnvUZ("KLDR_MAIN_STACK_SIZE", &cbDefOverride))
+                cbDefOverride = 0;
+
+
+            /* needs allocating? */
+            if (    StackInfo.LinkAddress == NIL_KLDRADDR
+                ||  StackInfo.cbStack < cbDefOverride)
+            {
+                KSIZE cbStack = (KSIZE)K_MAX(StackInfo.cbStack, cbDefOverride);
+
+                g_pvkLdrDyldMainStack = kldrDyldOSAllocStack(cbStack);
+                if (g_pvkLdrDyldMainStack)
+                {
+                    g_cbkLdrDyldMainStack = cbStack;
+                    g_fkLdrDyldMainStackAllocated = 1;
+                }
+                else
+                    rc = KLDR_ERR_MAIN_STACK_ALLOC_FAILED;
+            }
+            else
+            {
+                KLDRDYLDMOD_ASSERT(StackInfo.Address != NIL_KLDRADDR);
+                KLDRDYLDMOD_ASSERT(StackInfo.cbStack > 0);
+
+                g_fkLdrDyldMainStackAllocated = 0;
+                g_pvkLdrDyldMainStack = (void *)(KUPTR)StackInfo.Address;
+                KLDRDYLDMOD_ASSERT((KUPTR)g_pvkLdrDyldMainStack == StackInfo.Address);
+
+                g_cbkLdrDyldMainStack = (KSIZE)StackInfo.cbStack;
+                KLDRDYLDMOD_ASSERT(StackInfo.cbStack == g_cbkLdrDyldMainStack);
+            }
+        }
+        if (!rc)
+            g_fkLdrDyldDoneMainStack = 1;
+    }
+
+    if (!rc)
+    {
+        if (ppvStack)
+            *ppvStack = g_pvkLdrDyldMainStack;
+        if (pcbStack)
+            *pcbStack = g_cbkLdrDyldMainStack;
+    }
+
+    return rc;
+}
+
+
+/**
+ * This starts the executable module.
+ *
+ * @returns non-zero OS or kLdr status code on failure.
+ *          (won't return on success.)
+ * @param   pMod    The executable module.
+ */
+int kldrDyldModStartExe(PKLDRDYLDMOD pMod)
+{
+    int         rc;
+    KLDRADDR    MainEPAddress;
+    void       *pvStack;
+    KSIZE      cbStack;
+    KLDRDYLDMOD_ASSERT(pMod->fExecutable);
+
+    rc = kLdrModQueryMainEntrypoint(pMod->pMod, NULL, KLDRMOD_BASEADDRESS_MAP, &MainEPAddress);
+    if (rc)
+        return rc;
+    rc = kldrDyldModGetMainStack(pMod, &pvStack, &cbStack);
+    if (rc)
+        return rc;
+    return kldrDyldOSStartExe((KUPTR)MainEPAddress, pvStack, cbStack);
+}
+
+
+/**
+ * Gets the module name.
+ *
+ * @returns 0 on success, KERR_BUFFER_OVERFLOW on failure.
+ * @param   pMod            The module.
+ * @param   pszName         Where to store the name.
+ * @param   cchName         The size of the name buffer.
+ */
+int kldrDyldModGetName(PKLDRDYLDMOD pMod, char *pszName, KSIZE cchName)
+{
+    KSIZE cch = K_MIN(cchName, pMod->pMod->cchName + 1);
+    if (cch)
+    {
+        kHlpMemCopy(pszName, pMod->pMod->pszName, cch - 1);
+        pszName[cch - 1] = '\0';
+    }
+    return cchName <= pMod->pMod->cchName ? KERR_BUFFER_OVERFLOW : 0;
+}
+
+
+/**
+ * Gets the module filename.
+ *
+ * @returns 0 on success, KERR_BUFFER_OVERFLOW on failure.
+ * @param   pMod            The module.
+ * @param   pszFilename     Where to store the filename.
+ * @param   cchFilename     The size of the filename buffer.
+ */
+int kldrDyldModGetFilename(PKLDRDYLDMOD pMod, char *pszFilename, KSIZE cchFilename)
+{
+    KSIZE cch = K_MIN(cchFilename, pMod->pMod->cchFilename + 1);
+    if (cch)
+    {
+        kHlpMemCopy(pszFilename, pMod->pMod->pszFilename, cch - 1);
+        pszFilename[cch - 1] = '\0';
+    }
+    return cchFilename <= pMod->pMod->cchFilename ? KERR_BUFFER_OVERFLOW : 0;
+}
+
+
+/**
+ * Gets the address/value of a symbol in the specified module.
+ *
+ * @returns 0 on success, KLDR_ERR_SYMBOL_NOT_FOUND on failure.
+ * @param   pMod            The module.
+ * @param   uSymbolOrdinal  The symbol ordinal 0. This is ignored if the name is non-zero.
+ * @param   pszSymbolName   The symbol name. Can be NULL.
+ * @param   puValue         Where to store the value. optional.
+ * @param   pfKind          Where to store the symbol kind. optional.
+ */
+int kldrDyldModQuerySymbol(PKLDRDYLDMOD pMod, KU32 uSymbolOrdinal, const char *pszSymbolName,
+                           KUPTR *puValue, KU32 *pfKind)
+{
+    int         rc;
+    KLDRADDR    uValue = 0;
+    KU32        fKind = 0;
+
+    rc = kLdrModQuerySymbol(pMod->pMod, NULL, KLDRMOD_BASEADDRESS_MAP,
+                            uSymbolOrdinal, pszSymbolName, kHlpStrLen(pszSymbolName), NULL,
+                            kldrDyldModFixupGetImportCallback, pMod,
+                            &uValue, &fKind);
+    if (!rc)
+    {
+        if (puValue)
+        {
+            *puValue = (KUPTR)uValue;
+            KLDRDYLDMOD_ASSERT(*puValue == uValue);
+        }
+        if (pfKind)
+            *pfKind = fKind;
+    }
+
+    return rc;
+}
+
diff --git a/src/lib/kStuff/kLdr/kLdrDyldOS.c b/src/lib/kStuff/kLdr/kLdrDyldOS.c
new file mode 100644
index 0000000..ed47561
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrDyldOS.c
@@ -0,0 +1,133 @@
+/* $Id: kLdrDyldOS.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - The Dynamic Loader, OS specific operations.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kLdr.h>
+#include "kLdrInternal.h"
+
+#if K_OS == K_OS_OS2
+# define INCL_BASE
+# define INCL_ERRORS
+# include <os2.h>
+
+#elif K_OS == K_OS_WINDOWS
+# undef IMAGE_DOS_SIGNATURE
+# undef IMAGE_NT_SIGNATURE
+# include <Windows.h>
+
+#else
+# include <k/kHlpAlloc.h>
+
+#endif
+
+
+/**
+ * Allocates a stack.
+ *
+ * @returns Pointer to the stack. NULL on allocation failure (assumes out of memory).
+ * @param   cb      The size of the stack. This shall be page aligned.
+ *                  If 0, a OS specific default stack size will be employed.
+ */
+void *kldrDyldOSAllocStack(KSIZE cb)
+{
+#if K_OS == K_OS_OS2
+    APIRET rc;
+    PVOID pv;
+
+    if (!cb)
+        cb = 1 * 1024*1024; /* 1MB */
+
+    rc = DosAllocMem(&pv, cb, OBJ_TILE | PAG_COMMIT | PAG_WRITE | PAG_READ);
+    if (rc == NO_ERROR)
+        return pv;
+    return NULL;
+
+#elif K_OS == K_OS_WINDOWS
+
+    if (!cb)
+        cb = 1 *1024*1024; /* 1MB */
+
+    return VirtualAlloc(NULL, cb, MEM_COMMIT, PAGE_READWRITE);
+
+#else
+    void *pv;
+
+    if (!cb)
+        cb = 1 * 1024*1024; /* 1MB */
+
+    if (!kHlpPageAlloc(&pv, cb, KPROT_READWRITE, K_FALSE))
+        return pv;
+    return NULL;
+#endif
+}
+
+
+/**
+ * Invokes the main executable entry point with whatever
+ * parameters specific to the host OS and/or module format.
+ *
+ * @returns
+ * @param   uMainEPAddress  The address of the main entry point.
+ * @param   pvStack         Pointer to the stack object.
+ * @param   cbStack         The size of the stack object.
+ */
+int kldrDyldOSStartExe(KUPTR uMainEPAddress, void *pvStack, KSIZE cbStack)
+{
+#if K_OS == K_OS_WINDOWS
+    /*
+     * Invoke the entrypoint on the current stack for now.
+     * Deal with other formats and stack switching another day.
+     */
+    int rc;
+    int (*pfnEP)(void);
+    pfnEP = (int (*)(void))uMainEPAddress;
+
+    rc = pfnEP();
+
+    TerminateProcess(GetCurrentProcess(), rc);
+    kHlpAssert(!"TerminateProcess failed");
+    for (;;)
+        TerminateProcess(GetCurrentProcess(), rc);
+#endif
+
+    return -1;
+}
+
+
+void kldrDyldDoLoadExeStackSwitch(PKLDRDYLDMOD pExe, void *pvStack, KSIZE cbStack)
+{
+    /*kHlpAssert(!"not implemented");*/
+
+    /** @todo implement this properly! */
+    kldrDyldDoLoadExe(pExe);
+}
+
diff --git a/src/lib/kStuff/kLdr/kLdrDyldSem.c b/src/lib/kStuff/kLdr/kLdrDyldSem.c
new file mode 100644
index 0000000..9ffa497
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrDyldSem.c
@@ -0,0 +1,198 @@
+/* $Id: kLdrDyldSem.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - The Dynamic Loader, Semaphore Helper Functions.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kDefs.h>
+#include <k/kHlpSem.h>
+#include <k/kHlpAssert.h>
+
+#if K_OS == K_OS_DARWIN
+# include <mach/mach.h>
+# undef mach_task_self  /* don't use the macro (if we're using bare helpers ) */
+
+#elif K_OS == K_OS_OS2
+# define INCL_BASE
+# define INCL_ERRORS
+# include <os2.h>
+
+#elif  K_OS == K_OS_WINDOWS
+# include <Windows.h>
+
+#else
+# error "port me"
+#endif
+
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+#if K_OS == K_OS_DARWIN
+/** The loader sempahore. */
+static semaphore_t      g_Semaphore = MACH_PORT_NULL;
+
+#elif K_OS == K_OS_OS2
+/** The loader sempahore. */
+static HMTX             g_hmtx;
+
+#elif  K_OS == K_OS_WINDOWS
+/** The loader sempahore. */
+static CRITICAL_SECTION g_CritSect;
+
+#else
+# error "port me"
+#endif
+
+
+/**
+ * Initializes the loader semaphore.
+ *
+ * @returns 0 on success, non-zero OS status code on failure.
+ */
+int kLdrDyldSemInit(void)
+{
+#if K_OS == K_OS_DARWIN
+    kern_return_t krc;
+
+    krc = semaphore_create(mach_task_self(), &g_Semaphore, SYNC_POLICY_FIFO, 0);
+    if (krc != KERN_SUCCESS)
+        return krc;
+
+#elif K_OS == K_OS_OS2
+    APIRET rc;
+    g_hmtx = NULLHANDLE;
+    rc = DosCreateMutexSem(NULL, &g_hmtx, 0, FALSE);
+    if (rc)
+        return rc;
+
+#elif  K_OS == K_OS_WINDOWS
+    InitializeCriticalSection(&g_CritSect);
+
+#else
+# error "port me"
+#endif
+    return 0;
+}
+
+
+/**
+ * Terminates the loader semaphore.
+ */
+void kLdrDyldSemTerm(void)
+{
+#if K_OS == K_OS_DARWIN
+    kern_return_t krc;
+    semaphore_t Semaphore = g_Semaphore;
+    g_Semaphore = MACH_PORT_NULL;
+    krc = semaphore_destroy(mach_task_self(), Semaphore);
+    kHlpAssert(krc == KERN_SUCCESS); (void)krc;
+
+#elif K_OS == K_OS_OS2
+    HMTX hmtx = g_hmtx;
+    g_hmtx = NULLHANDLE;
+    DosCloseMutexSem(hmtx);
+
+#elif  K_OS == K_OS_WINDOWS
+    DeleteCriticalSection(&g_CritSect);
+
+#else
+# error "port me"
+#endif
+}
+
+
+/**
+ * Requests the loader sempahore ownership.
+ * This can be done recursivly.
+ *
+ * @returns 0 on success, non-zero OS status code on failure.
+ */
+int kLdrDyldSemRequest(void)
+{
+#if K_OS == K_OS_DARWIN
+    /* not sure about this... */
+    kern_return_t krc;
+    do krc = semaphore_wait(g_Semaphore);
+    while (krc == KERN_ABORTED);
+    if (krc == KERN_SUCCESS)
+        return 0;
+    return krc;
+
+#elif K_OS == K_OS_OS2
+    APIRET rc = DosRequestMutexSem(g_hmtx, 5000);
+    if (rc == ERROR_TIMEOUT || rc == ERROR_SEM_TIMEOUT || rc == ERROR_INTERRUPT)
+    {
+        unsigned i = 0;
+        do
+        {
+            /** @todo check for deadlocks etc. */
+            rc = DosRequestMutexSem(g_hmtx, 1000);
+        } while (   (   rc == ERROR_TIMEOUT
+                     || rc == ERROR_SEM_TIMEOUT
+                     || rc == ERROR_INTERRUPT)
+                 && i++ < 120);
+    }
+    return rc;
+
+#elif  K_OS == K_OS_WINDOWS
+    EnterCriticalSection(&g_CritSect);
+    return 0;
+
+#else
+# error "port me"
+#endif
+}
+
+
+/**
+ * Releases the loader semaphore ownership.
+ * The caller is responsible for making sure it's the semaphore owner!
+ */
+void kLdrDyldSemRelease(void)
+{
+#if K_OS == K_OS_DARWIN
+    /* not too sure about this... */
+    kern_return_t krc = semaphore_signal(g_Semaphore);
+    kHlpAssert(krc == KERN_SUCCESS); (void)krc;
+
+#elif K_OS == K_OS_OS2
+    APIRET rc = DosReleaseMutexSem(g_hmtx);
+    kHlpAssert(!rc); (void)rc;
+
+#elif  K_OS == K_OS_WINDOWS
+    LeaveCriticalSection(&g_CritSect);
+
+#else
+# error "port me"
+#endif
+}
+
diff --git a/src/lib/kStuff/kLdr/kLdrExeStub-os2.asm b/src/lib/kStuff/kLdr/kLdrExeStub-os2.asm
new file mode 100644
index 0000000..ad897e3
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrExeStub-os2.asm
@@ -0,0 +1,72 @@
+; $Id: kLdrExeStub-os2.asm 29 2009-07-01 20:30:29Z bird $

+;; @file

+; kLdr - OS/2 Loader Stub.

+;

+; This file contains a 64kb code/data/stack segment which is used to kick off

+; the loader dll that loads the process.

+;

+

+;

+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>

+;

+; Permission is hereby granted, free of charge, to any person

+; obtaining a copy of this software and associated documentation

+; files (the "Software"), to deal in the Software without

+; restriction, including without limitation the rights to use,

+; copy, modify, merge, publish, distribute, sublicense, and/or sell

+; copies of the Software, and to permit persons to whom the

+; Software is furnished to do so, subject to the following

+; conditions:

+;

+; The above copyright notice and this permission notice shall be

+; included in all copies or substantial portions of the Software.

+;

+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

+; OTHER DEALINGS IN THE SOFTWARE.

+;

+

+struc KLDRARGS

+    .fFlags         resd 1

+    .enmSearch      resd 1

+    .szExecutable   resb 260

+    .szDefPrefix    resb 16

+    .szDefSuffix    resb 16

+    .szLibPath      resb (4096 - (4 + 4 + 16 + 16 + 260))

+endstruc

+

+extern _kLdrDyldLoadExe

+

+

+segment DATA32 stack CLASS=DATA align=16 use32

+..start:

+    push    args

+    jmp     _kLdrDyldLoadExe

+

+;

+; Argument structure.

+;

+align 4

+args:

+istruc KLDRARGS

+    at KLDRARGS.fFlags,         dd 0

+    at KLDRARGS.enmSearch,      dd 2 ;KLDRDYLD_SEARCH_HOST

+    at KLDRARGS.szDefPrefix,    db ''

+    at KLDRARGS.szDefSuffix,    db '.dll'

+;    at KLDRARGS.szExecutable,   db 'tst-0.exe'

+    at KLDRARGS.szLibPath,      db ''

+iend

+

+segment STACK32 stack CLASS=STACK align=16 use32

+; pad up to 64KB.

+resb 60*1024

+

+global WEAK$ZERO

+WEAK$ZERO EQU 0

+group DGROUP, DATA32  STACK32

+

diff --git a/src/lib/kStuff/kLdr/kLdrExeStub-os2.c b/src/lib/kStuff/kLdr/kLdrExeStub-os2.c
new file mode 100644
index 0000000..17a4b1c
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrExeStub-os2.c
@@ -0,0 +1,59 @@
+/* $Id: kLdrExeStub-os2.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - OS/2 C Loader Stub.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kLdr.h>
+#include <os2.h>
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** The stub arguments. */
+static const KLDREXEARGS g_Args =
+{
+    /* .fFlags       = */ KLDRDYLD_LOAD_FLAGS_RECURSIVE_INIT,
+    /* .enmSearch    = */ KLDRDYLD_SEARCH_OS2,
+    /* .szExecutable = */ "tst-0", /* just while testing */
+    /* .szDefPrefix  = */ "",
+    /* .szDefSuffix  = */ ".dll",
+    /* .szLibPath    = */ ""
+};
+
+/**
+ * OS/2 'main'.
+ */
+int _System OS2Main(HMODULE hmod, ULONG ulReserved, PCH pszzEnv, PCH pszzCmdLine)
+{
+    return kLdrDyldLoadExe(&g_Args, &hmod);
+}
+
diff --git a/src/lib/kStuff/kLdr/kLdrExeStub-os2A.asm b/src/lib/kStuff/kLdr/kLdrExeStub-os2A.asm
new file mode 100644
index 0000000..b3d692c
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrExeStub-os2A.asm
@@ -0,0 +1,41 @@
+; $Id: kLdrExeStub-os2A.asm 29 2009-07-01 20:30:29Z bird $
+;; @file
+; kLdr - OS/2 Loader Stub, entry point thingy...
+;
+
+;
+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+;
+; Permission is hereby granted, free of charge, to any person
+; obtaining a copy of this software and associated documentation
+; files (the "Software"), to deal in the Software without
+; restriction, including without limitation the rights to use,
+; copy, modify, merge, publish, distribute, sublicense, and/or sell
+; copies of the Software, and to permit persons to whom the
+; Software is furnished to do so, subject to the following
+; conditions:
+;
+; The above copyright notice and this permission notice shall be
+; included in all copies or substantial portions of the Software.
+;
+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+; OTHER DEALINGS IN THE SOFTWARE.
+;
+
+
+segment TEXT32 public CLASS=CODE align=16 use32
+extern OS2Main
+..start:
+    jmp OS2Main
+
+segment DATA32 stack CLASS=DATA align=16 use32
+
+global WEAK$ZERO
+WEAK$ZERO EQU 0
+
diff --git a/src/lib/kStuff/kLdr/kLdrExeStub-win.c b/src/lib/kStuff/kLdr/kLdrExeStub-win.c
new file mode 100644
index 0000000..55920e5
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrExeStub-win.c
@@ -0,0 +1,62 @@
+/* $Id: kLdrExeStub-win.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - Windows Loader Stub.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kLdr.h>
+#include <Windows.h>
+#include "kLdrInternal.h"
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** The stub arguments. */
+static const KLDREXEARGS g_Args =
+{
+    /* .fFlags       = */ KLDRDYLD_LOAD_FLAGS_RECURSIVE_INIT,
+    /* .enmSearch    = */ KLDRDYLD_SEARCH_WINDOWS,
+    /* .szExecutable = */ "tst-0", /* just while testing */
+    /* .szDefPrefix  = */ "",
+    /* .szDefSuffix  = */ "",
+    /* .szLibPath    = */ ""
+};
+
+/**
+ * Windows 'main'.
+ */
+int WindowsMain(void)
+{
+    kLdrDyldLoadExe(&g_Args, NULL);
+    /* won't happen */
+    return 0;
+}
+
diff --git a/src/lib/kStuff/kLdr/kLdrHlp.h b/src/lib/kStuff/kLdr/kLdrHlp.h
new file mode 100644
index 0000000..ab54f10
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrHlp.h
@@ -0,0 +1,9 @@
+
+int     kldrHlpGetEnv(const char *pszVar, char *pszVal, KSIZE cchVal);
+int     kldrHlpGetEnvUZ(const char *pszVar, KSIZE *pcb);
+
+void    kldrHlpExit(int rc);
+void    kldrHlpSleep(unsigned cMillies);
+
+char   *kldrHlpInt2Ascii(char *psz, KSIZE cch, long lVal, unsigned iBase);
+
diff --git a/src/lib/kStuff/kLdr/kLdrInternal.h b/src/lib/kStuff/kLdr/kLdrInternal.h
new file mode 100644
index 0000000..c670a41
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrInternal.h
@@ -0,0 +1,463 @@
+/* $Id: kLdrInternal.h 117 2020-03-15 15:23:36Z bird $ */
+/** @file
+ * kLdr - The Dynamic Loader, internal header.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___kLdrInternal_h___
+#define ___kLdrInternal_h___
+
+#include <k/kHlp.h>
+#include <k/kRdr.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(__X86__) && !defined(__AMD64__)
+# if defined(__i386__) || defined(_M_IX86)
+#  define __X86__
+# elif defined(__x86_64__) || defined(_M_X64) || defined(__AMD64__) || defined(_M_AMD64)
+#  define __AMD64__
+# else
+#  error "can't figure out the target arch."
+# endif
+#endif
+
+/* ignore definitions in winnt.h */
+#undef IMAGE_DOS_SIGNATURE
+#undef IMAGE_NT_SIGNATURE
+
+/** @name Signatures we know
+ * @{ */
+/** ELF signature ("\x7fELF"). */
+#define IMAGE_ELF_SIGNATURE         K_LE2H_U32(0x7f | ('E' << 8) | ((KU32)'L' << 16) | ((KU32)'F' << 24))
+/** PE signature ("PE\0\0"). */
+#define IMAGE_NT_SIGNATURE          K_LE2H_U32('P' | ('E' << 8))
+/** LX signature ("LX") */
+#define IMAGE_LX_SIGNATURE          K_LE2H_U16('L' | ('X' << 8))
+/** LE signature ("LE") */
+#define IMAGE_LE_SIGNATURE          K_LE2H_U16('L' | ('E' << 8))
+/** NE signature ("NE") */
+#define IMAGE_NE_SIGNATURE          K_LE2H_U16('N' | ('E' << 8))
+/** MZ signature ("MZ"). */
+#define IMAGE_DOS_SIGNATURE         K_LE2H_U16('M' | ('Z' << 8))
+/** The FAT signature (universal binaries). */
+#define IMAGE_FAT_SIGNATURE         KU32_C(0xcafebabe)
+/** The FAT signature (universal binaries), other endian. */
+#define IMAGE_FAT_SIGNATURE_OE      KU32_C(0xbebafeca)
+/** The 32-bit Mach-O signature. */
+#define IMAGE_MACHO32_SIGNATURE     KU32_C(0xfeedface)
+/** The 32-bit Mach-O signature, other endian. */
+#define IMAGE_MACHO32_SIGNATURE_OE  KU32_C(0xcefaedfe)
+/** The 64-bit Mach-O signature. */
+#define IMAGE_MACHO64_SIGNATURE     KU32_C(0xfeedfacf)
+/** The 64-bit Mach-O signature, other endian. */
+#define IMAGE_MACHO64_SIGNATURE_OE  KU32_C(0xfefaedfe)
+/** @} */
+
+/** @defgroup grp_kLdrInternal  Internals
+ * @internal
+ * @{
+ */
+
+KI32 kldrModLXDoCall(KUPTR uEntrypoint, KUPTR uHandle, KU32 uOp, void *pvReserved);
+KI32 kldrModPEDoCall(KUPTR uEntrypoint, KUPTR uHandle, KU32 uOp, void *pvReserved);
+
+/**
+ * The state of a dynamic loader module.
+ * @image html KLDRSTATE.gif "The state diagram"
+ */
+typedef enum KLDRSTATE
+{
+    /** The usual invalid 0 enum. */
+    KLDRSTATE_INVALID = 0,
+
+    /** The module has just been opened and linked into the load list.
+     *
+     * Prev state: -
+     * Next state: MAPPED, PENDING_DESTROY
+     */
+    KLDRSTATE_OPEN,
+
+    /** The module segments has been mapped into the process memory.
+     *
+     * Prev state: OPEN
+     * Next state: LOADED_PREREQUISITES, PENDING_DESTROY
+     */
+    KLDRSTATE_MAPPED,
+    /** The module has been reloaded and needs to be fixed up again.
+     * This can occure when the loader is called recursivly.
+     *
+     * The reason RELOADED modules must go back to the PENDING_GC state is
+     * because we want to guard against uninit order issues, and therefore
+     * doesn't unmap modules untill all pending termintation callbacks has
+     * been executed.
+     *
+     * Prev state: PENDING_GC
+     * Next state: RELOADED_LOADED_PREREQUISITES, PENDING_GC
+     */
+    KLDRSTATE_RELOADED,
+
+    /** The immediate prerequisites have been loaded.
+     *
+     * Prev state: MAPPED
+     * Next state: FIXED_UP, PENDING_DESTROY
+     */
+    KLDRSTATE_LOADED_PREREQUISITES,
+    /** The immediate prerequisites have been loaded for a reloaded module.
+     *
+     * Prev state: RELOADED
+     * Next state: RELOADED_FIXED_UP, PENDING_GC
+     */
+    KLDRSTATE_RELOADED_LOADED_PREREQUISITES,
+
+    /** Fixups has been applied.
+     *
+     * Prev state: LOADED_PREREQUISITES
+     * Next state: PENDING_INITIALIZATION, PENDING_DESTROY
+     */
+    KLDRSTATE_FIXED_UP,
+    /** Fixups has been applied.
+     *
+     * Prev state: RELOADED_LOADED_PREREQUISITES
+     * Next state: PENDING_INITIALIZATION, PENDING_GC
+     */
+    KLDRSTATE_RELOADED_FIXED_UP,
+
+    /** Pending initialization.
+     * While the module is in this state the loader is in reentrant mode.
+     *
+     * Prev state: FIXED_UP, RELOADED_FIXED_UP
+     * Next state: INITIALIZATION, PENDING_GC
+     */
+    KLDRSTATE_PENDING_INITIALIZATION,
+
+    /** Initializing.
+     * While the module is in this state the loader is in reentrant mode.
+     *
+     * Prev state: PENDING_INITIALIZATION
+     * Next state: GOOD, PENDING_GC
+     */
+    KLDRSTATE_INITIALIZING,
+
+    /** Initialization failed.
+     *
+     * This is somewhat similar to PENDING_GC except that, a module
+     * in this state cannot be reloaded untill we've done GC. This ensures
+     * that a init failure during recursive loading is propagated up.
+     *
+     * While the module is in this state the loader is in reentrant mode.
+     *
+     * Prev state: INITIALIZING
+     * Next state: GC
+     */
+    KLDRSTATE_INITIALIZATION_FAILED,
+
+    /** The module has been successfully loaded and initialized.
+     * While the module is in this state the loader can be in reentrant
+     * or 'unused' mode.
+     *
+     * Prev state: INITIALIZING
+     * Next state: PENDING_TERMINATION
+     */
+    KLDRSTATE_GOOD,
+
+    /** Pending termination, reference count is 0.
+     * While the module is in this state the loader is in reentrant mode.
+     * Prerequisite modules are dropped when a module enters this state.
+     *
+     * Prev state: GOOD
+     * Next state: TERMINATING, GOOD
+     */
+    KLDRSTATE_PENDING_TERMINATION,
+
+    /** Terminating, reference count is still 0.
+     * While the module is in this state the loader is in reentrant mode.
+     *
+     * Prev state: PENDING_TERMINATION
+     * Next state: PENDING_GC
+     */
+    KLDRSTATE_TERMINATING,
+
+    /** Pending garbage collection.
+     * Prerequisite modules are dropped when a module enters this state (if not done already).
+     *
+     * Prev state: TERMINATING, PENDING_INITIALIZATION, INITIALIZATION_FAILED
+     * Next state: GC, RELOADED
+     */
+    KLDRSTATE_PENDING_GC,
+
+    /** Being garbage collected.
+     *
+     * Prev state: PENDING_GC, INITIALIZATION_FAILED
+     * Next state: PENDING_DESTROY, DESTROYED
+     */
+    KLDRSTATE_GC,
+
+    /** The module has be unlinked, but there are still stack references to it.
+     *
+     * Prev state: GC, FIXED_UP, LOADED_PREREQUISITES, MAPPED, OPEN
+     * Next state: DESTROYED
+     */
+    KLDRSTATE_PENDING_DESTROY,
+
+    /** The module has been destroyed but not freed yet.
+     *
+     * This happens when a module ends up being destroyed when cRefs > 0. The
+     * module structure will be freed when cRefs reaches 0.
+     *
+     * Prev state: GC, PENDING_DESTROY
+     */
+    KLDRSTATE_DESTROYED,
+
+    /** The end of valid states (exclusive) */
+    KLDRSTATE_END = KLDRSTATE_DESTROYED,
+    /** The usual 32-bit blowup. */
+    KLDRSTATE_32BIT_HACK = 0x7fffffff
+} KLDRSTATE;
+
+
+/**
+ * Dynamic loader module.
+ */
+typedef struct KLDRDYLDMOD
+{
+    /** Magic number. */
+    KU32                u32MagicHead;
+    /** The module state. */
+    KLDRSTATE           enmState;
+    /** The module. */
+    PKLDRMOD            pMod;
+    /** The module handle. */
+    HKLDRMOD            hMod;
+    /** The total number of references. */
+    KU32                cRefs;
+    /** The number of dependency references. */
+    KU32                cDepRefs;
+    /** The number of dynamic load references. */
+    KU32                cDynRefs;
+    /** Set if this is the executable module.
+     * When clear, the module is a shared object or relocatable object. */
+    KU32                fExecutable : 1;
+    /** Global DLL (set) or specific DLL (clear). */
+    KU32                fGlobalOrSpecific : 1;
+    /** Whether the module contains bindable symbols in the global unix namespace. */
+    KU32                fBindable : 1;
+    /** Set if linked into the global init list. */
+    KU32                fInitList : 1;
+    /** Already loaded or checked prerequisites.
+     * This flag is used when loading prerequisites, when set it means that
+     * this module is already seen and shouldn't be processed again. */
+    KU32                fAlreadySeen : 1;
+    /** Set if the module is currently mapped.
+     * This is used to avoid unnecessary calls to kLdrModUnmap during cleanup. */
+    KU32                fMapped : 1;
+    /** Set if TLS allocation has been done. (part of the mapping). */
+    KU32                fAllocatedTLS : 1;
+    /** Reserved for future use. */
+    KU32                f25Reserved : 25;
+    /** The load list linkage. */
+    struct
+    {
+        /** The next module in the list. */
+        struct KLDRDYLDMOD *pNext;
+        /** The prev module in the list. */
+        struct KLDRDYLDMOD *pPrev;
+    } Load;
+    /** The initialization and termination list linkage.
+     * If non-recursive initialization is used, the module will be pushed on
+     * the initialization list.
+     * A module will be linked into the termination list upon a successful
+     * return from module initialization. */
+    struct
+    {
+        /** The next module in the list. */
+        struct KLDRDYLDMOD *pNext;
+        /** The prev module in the list. */
+        struct KLDRDYLDMOD *pPrev;
+    } InitTerm;
+    /** The bind order list linkage.
+     * The module is not in this list when fBindable is clear. */
+    struct
+    {
+        /** The next module in the list. */
+        struct KLDRDYLDMOD *pNext;
+        /** The prev module in the list. */
+        struct KLDRDYLDMOD *pPrev;
+    } Bind;
+
+    /** The number of prerequisite modules in the prereq array. */
+    KU32                cPrereqs;
+    /** Pointer to an array of prerequisite module pointers.
+     * This array is only filled when in the states starting with
+     * KLDRSTATE_LOADED_PREREQUISITES thru KLDRSTATE_GOOD.
+     */
+    struct KLDRDYLDMOD **papPrereqs;
+
+    /** Magic number. */
+    KU32                u32MagicTail;
+} KLDRDYLDMOD, *PKLDRDYLDMOD, **PPKLDRDYLDMOD;
+
+/** KLDRDYLDMOD magic value. (Fuyumi Soryo) */
+#define KLDRDYMOD_MAGIC     0x19590106
+
+/** Return / crash validation of a module handle argument. */
+#define KLDRDYLD_VALIDATE_HKLDRMOD(hMod) \
+    do  { \
+        if (    (hMod) == NIL_HKLDRMOD \
+            ||  (hMod)->u32MagicHead != KLDRDYMOD_MAGIC \
+            ||  (hMod)->u32MagicTail != KLDRDYMOD_MAGIC) \
+        { \
+            return KERR_INVALID_HANDLE; \
+        } \
+    } while (0)
+
+
+int kldrInit(void);
+void kldrTerm(void);
+
+int kldrDyldInit(void);
+void kldrDyldTerm(void);
+
+void kldrDyldDoLoadExe(PKLDRDYLDMOD pExe);
+int kldrDyldFailure(int rc, const char *pszFormat, ...);
+
+int kldrDyldOSStartExe(KUPTR uMainEntrypoint, void *pvStack, KSIZE cbStack);
+void *kldrDyldOSAllocStack(KSIZE cb);
+
+int kldrDyldFindInit(void);
+int kldrDyldFindNewModule(const char *pszName, const char *pszPrefix, const char *pszSuffix,
+                          KLDRDYLDSEARCH enmSearch, unsigned fFlags, PPKLDRDYLDMOD ppMod);
+int kldrDyldFindExistingModule(const char *pszName, const char *pszPrefix, const char *pszSuffix,
+                               KLDRDYLDSEARCH enmSearch, unsigned fFlags, PPKLDRDYLDMOD ppMod);
+
+int kldrDyldGetPrerequisite(const char *pszDll, const char *pszPrefix, const char *pszSuffix, KLDRDYLDSEARCH enmSearch,
+                            unsigned fFlags, PKLDRDYLDMOD pDep, PPKLDRDYLDMOD ppMod);
+
+
+int kldrDyldModCreate(PKRDR pRdr, KU32 fFlags, PPKLDRDYLDMOD ppMod);
+void kldrDyldModDestroy(PKLDRDYLDMOD pMod);
+void kldrDyldModAddRef(PKLDRDYLDMOD pMod);
+void kldrDyldModDeref(PKLDRDYLDMOD pMod);
+void kldrDyldModAddDep(PKLDRDYLDMOD pMod, PKLDRDYLDMOD pDep);
+void kldrDyldModRemoveDep(PKLDRDYLDMOD pMod, PKLDRDYLDMOD pDep);
+int kldrDyldModDynamicLoad(PKLDRDYLDMOD pMod);
+int kldrDyldModDynamicUnload(PKLDRDYLDMOD pMod);
+void kldrDyldModMarkGlobal(PKLDRDYLDMOD pMod);
+void kldrDyldModMarkSpecific(PKLDRDYLDMOD pMod);
+void kldrDyldModSetBindable(PKLDRDYLDMOD pMod, unsigned fDeep);
+void kldrDyldModClearBindable(PKLDRDYLDMOD pMod);
+int kldrDyldModMap(PKLDRDYLDMOD pMod);
+int kldrDyldModUnmap(PKLDRDYLDMOD pMod);
+int kldrDyldModLoadPrerequisites(PKLDRDYLDMOD pMod, const char *pszPrefix, const char *pszSuffix,
+                                 KLDRDYLDSEARCH enmSearch, unsigned fFlags);
+int kldrDyldModCheckPrerequisites(PKLDRDYLDMOD pMod);
+void kldrDyldModUnloadPrerequisites(PKLDRDYLDMOD pMod);
+int kldrDyldModFixup(PKLDRDYLDMOD pMod);
+int kldrDyldModCallInit(PKLDRDYLDMOD pMod);
+void kldrDyldModCallTerm(PKLDRDYLDMOD pMod);
+int kldrDyldModReload(PKLDRDYLDMOD pMod);
+int kldrDyldModAttachThread(PKLDRDYLDMOD pMod);
+void kldrDyldModDetachThread(PKLDRDYLDMOD pMod);
+int kldrDyldModGetMainStack(PKLDRDYLDMOD pMod, void **ppvStack, KSIZE *pcbStack);
+int kldrDyldModStartExe(PKLDRDYLDMOD pMod);
+
+int kldrDyldModGetName(PKLDRDYLDMOD pMod, char *pszName, KSIZE cchName);
+int kldrDyldModGetFilename(PKLDRDYLDMOD pMod, char *pszFilename, KSIZE cchFilename);
+int kldrDyldModQuerySymbol(PKLDRDYLDMOD pMod, KU32 uSymbolOrdinal, const char *pszSymbolName, KUPTR *puValue, KU32 *pfKind);
+
+
+/** Pointer to the head module (the executable).
+ * (This is exported, so no prefix.) */
+extern PKLDRDYLDMOD     kLdrDyldHead;
+/** Pointer to the tail module.
+ * (This is exported, so no prefix.) */
+extern PKLDRDYLDMOD     kLdrDyldTail;
+/** Pointer to the head module of the initialization list.
+ * The outermost load call will pop elements from this list in LIFO order (i.e.
+ * from the tail). The list is only used during non-recursive initialization
+ * and may therefore share the pNext/pPrev members with the termination list
+ * since we don't push a module onto the termination list untill it has been
+ * successfully initialized. */
+extern PKLDRDYLDMOD     g_pkLdrDyldInitHead;
+/** Pointer to the tail module of the initalization list. */
+extern PKLDRDYLDMOD     g_pkLdrDyldInitTail;
+/** Pointer to the head module of the termination order list. */
+extern PKLDRDYLDMOD     g_pkLdrDyldTermHead;
+/** Pointer to the tail module of the termination order list. */
+extern PKLDRDYLDMOD     g_pkLdrDyldTermTail;
+/** Pointer to the head module of the bind order list.
+ * The modules in this list makes up the global namespace used when binding symbol unix fashion. */
+extern PKLDRDYLDMOD     g_pkLdrDyldBindHead;
+/** Pointer to the tail module of the bind order list. */
+extern PKLDRDYLDMOD     g_pkLdrDyldBindTail;
+
+/** Indicates that the other MainStack globals have been filled in. */
+extern unsigned         g_fkLdrDyldDoneMainStack;
+/** Whether the stack was allocated seperatly or was part of the executable. */
+extern unsigned         g_fkLdrDyldMainStackAllocated;
+/** Pointer to the main stack object. */
+extern void            *g_pvkLdrDyldMainStack;
+/** The size of the main stack object. */
+extern KSIZE            g_cbkLdrDyldMainStack;
+
+/** The global error buffer. */
+extern char             g_szkLdrDyldError[1024];
+
+extern char             kLdrDyldExePath[8192];
+extern char             kLdrDyldLibraryPath[8192];
+extern char             kLdrDyldDefPrefix[16];
+extern char             kLdrDyldDefSuffix[16];
+
+extern int              g_fBootstrapping;
+
+
+/** @name The Loader semaphore
+ * @{ */
+int     kLdrDyldSemInit(void);
+void    kLdrDyldSemTerm(void);
+int     kLdrDyldSemRequest(void);
+void    kLdrDyldSemRelease(void);
+/** @} */
+
+
+/** @name Module interpreter method tables
+ * @{ */
+extern KLDRMODOPS       g_kLdrModLXOps;
+extern KLDRMODOPS       g_kLdrModMachOOps;
+extern KLDRMODOPS       g_kLdrModNativeOps;
+extern KLDRMODOPS       g_kLdrModPEOps;
+/** @} */
+
+
+/** @} */
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/lib/kStuff/kLdr/kLdrMod.c b/src/lib/kStuff/kLdr/kLdrMod.c
new file mode 100644
index 0000000..5c11260
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrMod.c
@@ -0,0 +1,914 @@
+/* $Id: kLdrMod.c 81 2016-08-18 22:10:38Z bird $ */

+/** @file

+ * kLdr - The Module Interpreter.

+ */

+

+/*

+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>

+ *

+ * Permission is hereby granted, free of charge, to any person

+ * obtaining a copy of this software and associated documentation

+ * files (the "Software"), to deal in the Software without

+ * restriction, including without limitation the rights to use,

+ * copy, modify, merge, publish, distribute, sublicense, and/or sell

+ * copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following

+ * conditions:

+ *

+ * The above copyright notice and this permission notice shall be

+ * included in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

+ * OTHER DEALINGS IN THE SOFTWARE.

+ */

+

+/*******************************************************************************

+*   Header Files                                                               *

+*******************************************************************************/

+#include <k/kLdr.h>

+#include "kLdrInternal.h"

+#include <k/kCpu.h>

+#include <k/kLdrFmts/mz.h>

+#if 1 /* testing headers */

+# include <k/kLdrFmts/pe.h>

+# include <k/kLdrFmts/lx.h>

+# include <k/kLdrFmts/mach-o.h>

+#endif

+

+

+/*******************************************************************************

+*   Defined Constants And Macros                                               *

+*******************************************************************************/

+/** @def KLDRMOD_STRICT

+ * Define KLDRMOD_STRICT to enabled strict checks in KLDRMOD. */

+#define KLDRMOD_STRICT 1

+

+/** @def KLDRMOD_ASSERT

+ * Assert that an expression is true when KLDR_STRICT is defined.

+ */

+#ifdef KLDRMOD_STRICT

+# define KLDRMOD_ASSERT(expr)  kHlpAssert(expr)

+#else

+# define KLDRMOD_ASSERT(expr)  do {} while (0)

+#endif

+

+/** Return / crash validation of a module argument. */

+#define KLDRMOD_VALIDATE_EX(pMod, rc) \

+    do  { \

+        if (    (pMod)->u32Magic != KLDRMOD_MAGIC \

+            ||  (pMod)->pOps == NULL \

+           )\

+        { \

+            return (rc); \

+        } \

+    } while (0)

+

+/** Return / crash validation of a module argument. */

+#define KLDRMOD_VALIDATE(pMod) \

+    KLDRMOD_VALIDATE_EX(pMod, KERR_INVALID_PARAMETER)

+

+/** Return / crash validation of a module argument. */

+#define KLDRMOD_VALIDATE_VOID(pMod) \

+    do  { \

+        if (    (pMod)->u32Magic != KLDRMOD_MAGIC \

+            ||  (pMod)->pOps == NULL \

+           )\

+        { \

+            return; \

+        } \

+    } while (0)

+

+

+/*******************************************************************************

+*   Global Variables                                                           *

+*******************************************************************************/

+/** The list of module interpreters. */

+static PCKLDRMODOPS g_pModInterpreterHead = NULL;

+

+

+

+/*******************************************************************************

+*   Internal Functions                                                         *

+*******************************************************************************/

+

+

+

+/**

+ * Open a executable image by file name.

+ *

+ * @returns 0 on success and *ppMod pointing to a module instance.

+ *          On failure, a non-zero OS specific error code is returned.

+ * @param   pszFilename     The filename to open.

+ * @param   fFlags          Flags, MBZ.

+ * @param   enmCpuArch      The desired CPU architecture. KCPUARCH_UNKNOWN means

+ *                          anything goes, but with a preference for the current

+ *                          host architecture.

+ * @param   ppMod           Where to store the module handle.

+ */

+int kLdrModOpen(const char *pszFilename, KU32 fFlags, KCPUARCH enmCpuArch, PPKLDRMOD ppMod)

+{

+    /*

+     * Open the file using a bit provider.

+     */

+    PKRDR pRdr;

+    int rc = kRdrOpen(&pRdr, pszFilename);

+    if (!rc)

+    {

+        rc = kLdrModOpenFromRdr(pRdr, fFlags, enmCpuArch, ppMod);

+        if (!rc)

+            return 0;

+       kRdrClose(pRdr);

+    }

+    return rc;

+}

+

+

+/**

+ * Select image from the FAT according to the enmCpuArch and fFlag.

+ *

+ * @returns 0 on success and *poffHdr set to the image header.

+ *          On failure, a non-zero error code is returned.

+ *

+ * @param   pRdr            The file provider instance to use.

+ * @param   fFlags          Flags, MBZ.

+ * @param   enmCpuArch      The desired CPU architecture. KCPUARCH_UNKNOWN means

+ *                          anything goes, but with a preference for the current

+ *                          host architecture.

+ * @param   u32Magic        The FAT magic.

+ * @param   poffHdr         Where to store the offset of the selected image.

+ */

+static int kldrModOpenFromRdrSelectImageFromFAT(PKRDR pRdr, KU32 fFlags, KCPUARCH enmCpuArch, KU32 u32Magic, KLDRFOFF *poffHdr)

+{

+    int         rcRet = KLDR_ERR_CPU_ARCH_MISMATCH;

+    KLDRFOFF    off = *poffHdr + sizeof(KU32);

+    KLDRFOFF    offEndFAT;

+    KBOOL       fCpuArchWhatever;

+    KU32        cArchs;

+    KU32        iArch;

+    int         rc;

+    K_NOREF(fFlags);

+

+    /* Read fat_header_t::nfat_arch. */

+    rc = kRdrRead(pRdr, &cArchs, sizeof(cArchs), off);

+    if (rc)

+        return rc;

+    off += sizeof(KU32);

+    if (u32Magic == IMAGE_FAT_SIGNATURE_OE)

+        cArchs = K_E2E_U32(cArchs);

+    if (cArchs == 0)

+        return KLDR_ERR_FAT_INVALID;

+

+    /* Deal with KCPUARCH_UNKNOWN. */

+    fCpuArchWhatever = enmCpuArch == KCPUARCH_UNKNOWN;

+    if (fCpuArchWhatever)

+    {

+        KCPU enmCpuIgnored;

+        kCpuGetArchAndCpu(&enmCpuArch, &enmCpuIgnored);

+    }

+

+    /*

+     * Iterate the architecture list.

+     */

+    offEndFAT = off + cArchs * sizeof(fat_arch_t);

+    for (iArch = 0; iArch < cArchs; iArch++)

+    {

+        KCPUARCH    enmEntryArch;

+        fat_arch_t  Arch;

+        rc = kRdrRead(pRdr, &Arch, sizeof(Arch), off);

+        if (rc)

+            return rc;

+        off += sizeof(Arch);

+

+        if (u32Magic == IMAGE_FAT_SIGNATURE_OE)

+        {

+            Arch.cputype    = K_E2E_U32(Arch.cputype);

+            Arch.cpusubtype = K_E2E_U32(Arch.cpusubtype);

+            Arch.offset     = K_E2E_U32(Arch.offset);

+            Arch.size       = K_E2E_U32(Arch.size);

+            Arch.align      = K_E2E_U32(Arch.align);

+        }

+

+        /* Simple validation. */

+        if (    (KLDRFOFF)Arch.offset < offEndFAT

+            ||  (KLDRFOFF)Arch.offset >= kRdrSize(pRdr)

+            ||  Arch.align >= 32

+            ||  Arch.offset & ((KU32_C(1) << Arch.align) - KU32_C(1)))

+            return KLDR_ERR_FAT_INVALID;

+

+        /* deal with the cputype and cpusubtype. (See similar code in kLdrModMachO.c.) */

+        switch (Arch.cputype)

+        {

+            case CPU_TYPE_X86:

+                enmEntryArch = KCPUARCH_X86_32;

+                switch (Arch.cpusubtype)

+                {

+                    case CPU_SUBTYPE_I386_ALL:

+                    /*case CPU_SUBTYPE_386: ^^ ;*/

+                    case CPU_SUBTYPE_486:

+                    case CPU_SUBTYPE_486SX:

+                    /*case CPU_SUBTYPE_586: vv */

+                    case CPU_SUBTYPE_PENT:

+                    case CPU_SUBTYPE_PENTPRO:

+                    case CPU_SUBTYPE_PENTII_M3:

+                    case CPU_SUBTYPE_PENTII_M5:

+                    case CPU_SUBTYPE_CELERON:

+                    case CPU_SUBTYPE_CELERON_MOBILE:

+                    case CPU_SUBTYPE_PENTIUM_3:

+                    case CPU_SUBTYPE_PENTIUM_3_M:

+                    case CPU_SUBTYPE_PENTIUM_3_XEON:

+                    case CPU_SUBTYPE_PENTIUM_M:

+                    case CPU_SUBTYPE_PENTIUM_4:

+                    case CPU_SUBTYPE_PENTIUM_4_M:

+                    case CPU_SUBTYPE_XEON:

+                    case CPU_SUBTYPE_XEON_MP:

+                        break;

+                    default:

+                        return KLDR_ERR_FAT_UNSUPPORTED_CPU_SUBTYPE;

+                }

+                break;

+

+            case CPU_TYPE_X86_64:

+                enmEntryArch = KCPUARCH_AMD64;

+                switch (Arch.cpusubtype & ~CPU_SUBTYPE_MASK)

+                {

+                    case CPU_SUBTYPE_X86_64_ALL:

+                        break;

+                    default:

+                        return KLDR_ERR_FAT_UNSUPPORTED_CPU_SUBTYPE;

+                }

+                break;

+

+            default:

+                enmEntryArch = KCPUARCH_UNKNOWN;

+                break;

+        }

+

+        /*

+         * Finally the actual image selecting.

+         *

+         * Return immediately on a perfect match. Otherwise continue looking,

+         * if we're none too picky, remember the first image in case we don't

+         * get lucky.

+         */

+        if (enmEntryArch == enmCpuArch)

+        {

+            *poffHdr = Arch.offset;

+            return 0;

+        }

+

+        if (    fCpuArchWhatever

+            &&  rcRet == KLDR_ERR_CPU_ARCH_MISMATCH)

+        {

+            *poffHdr = Arch.offset;

+            rcRet = 0;

+        }

+    }

+

+    return rcRet;

+}

+

+

+/**

+ * Open a executable image from a file provider instance.

+ *

+ * @returns 0 on success and *ppMod pointing to a module instance.

+ *          On failure, a non-zero OS specific error code is returned.

+ * @param   pRdr            The file provider instance to use.

+ *                          On success, the ownership of the instance is taken by the

+ *                          module and the caller must not ever touch it again.

+ *                          (The instance is not closed on failure, the call has to do that.)

+ * @param   fFlags          Flags, MBZ.

+ * @param   enmCpuArch      The desired CPU architecture. KCPUARCH_UNKNOWN means

+ *                          anything goes, but with a preference for the current

+ *                          host architecture.

+ * @param   ppMod           Where to store the module handle.

+ */

+int kLdrModOpenFromRdr(PKRDR pRdr, KU32 fFlags, KCPUARCH enmCpuArch, PPKLDRMOD ppMod)

+{

+    union

+    {

+        KU32        u32;

+        KU16        u16;

+        KU16        au16[2];

+        KU8         au8[4];

+    }           u;

+    KLDRFOFF    offHdr = 0;

+    int         rc;

+

+    kHlpAssertReturn(!(fFlags & ~KLDRMOD_OPEN_FLAGS_VALID_MASK), KERR_INVALID_PARAMETER);

+

+    for (;;)

+    {

+        /*

+         * Try figure out what kind of image this is.

+         * Always read the 'new header' if we encounter MZ.

+         */

+        rc = kRdrRead(pRdr, &u, sizeof(u), offHdr);

+        if (rc)

+            return rc;

+        if (    u.u16 == IMAGE_DOS_SIGNATURE

+            &&  kRdrSize(pRdr) > (KFOFF)sizeof(IMAGE_DOS_HEADER))

+        {

+            rc = kRdrRead(pRdr, &u, sizeof(u.u32), K_OFFSETOF(IMAGE_DOS_HEADER, e_lfanew));

+            if (rc)

+                return rc;

+            if ((KLDRFOFF)u.u32 < kRdrSize(pRdr))

+            {

+                offHdr = u.u32;

+                rc = kRdrRead(pRdr, &u, sizeof(u.u32), offHdr);

+                if (rc)

+                    return rc;

+            }

+            else

+                u.u16 = IMAGE_DOS_SIGNATURE;

+        }

+

+        /*

+         * Handle FAT images too here (one only).

+         */

+        if (    (   u.u32 == IMAGE_FAT_SIGNATURE

+                 || u.u32 == IMAGE_FAT_SIGNATURE_OE)

+            &&  offHdr == 0)

+        {

+            rc = kldrModOpenFromRdrSelectImageFromFAT(pRdr, fFlags, enmCpuArch, u.u32, &offHdr);

+            if (rc)

+                return rc;

+            if (offHdr)

+                continue;

+        }

+        break;

+    }

+

+

+    /*

+     * Use the magic to select the appropriate image interpreter head on.

+     */

+    if (u.u16 == IMAGE_DOS_SIGNATURE)

+        rc = KLDR_ERR_MZ_NOT_SUPPORTED;

+    else if (u.u16 == IMAGE_NE_SIGNATURE)

+        rc = KLDR_ERR_NE_NOT_SUPPORTED;

+    else if (u.u16 == IMAGE_LX_SIGNATURE)

+        rc = g_kLdrModLXOps.pfnCreate(&g_kLdrModLXOps, pRdr, fFlags, enmCpuArch, offHdr, ppMod);

+    else if (u.u16 == IMAGE_LE_SIGNATURE)

+        rc = KLDR_ERR_LE_NOT_SUPPORTED;

+    else if (u.u32 == IMAGE_NT_SIGNATURE)

+        rc = g_kLdrModPEOps.pfnCreate(&g_kLdrModPEOps, pRdr, fFlags, enmCpuArch, offHdr, ppMod);

+    else if (   u.u32 == IMAGE_MACHO32_SIGNATURE

+             || u.u32 == IMAGE_MACHO32_SIGNATURE_OE

+             || u.u32 == IMAGE_MACHO64_SIGNATURE

+             || u.u32 == IMAGE_MACHO64_SIGNATURE_OE)

+        rc = g_kLdrModMachOOps.pfnCreate(&g_kLdrModMachOOps, pRdr, fFlags, enmCpuArch, offHdr, ppMod);

+    else if (u.u32 == IMAGE_ELF_SIGNATURE)

+        rc = KLDR_ERR_ELF_NOT_SUPPORTED;

+    else

+        rc = KLDR_ERR_UNKNOWN_FORMAT;

+

+    /*

+     * If no head on hit, let each interpreter have a go.

+     */

+    if (rc)

+    {

+        PCKLDRMODOPS pOps;

+        for (pOps = g_pModInterpreterHead; pOps; pOps = pOps->pNext)

+        {

+            int rc2 = pOps->pfnCreate(pOps, pRdr, fFlags, enmCpuArch, offHdr, ppMod);

+            if (!rc2)

+                return rc;

+        }

+        *ppMod = NULL;

+    }

+    return rc;

+}

+

+

+/**

+ * Closes an open module.

+ *

+ * The caller is responsible for calling kLdrModUnmap() and kLdrFreeTLS()

+ * before closing the module.

+ *

+ * @returns 0 on success, non-zero on failure. The module instance state

+ *          is unknown on failure, it's best not to touch it.

+ * @param   pMod    The module.

+ */

+int     kLdrModClose(PKLDRMOD pMod)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnDestroy(pMod);

+}

+

+

+/**

+ * Queries a symbol by name or ordinal number.

+ *

+ * @returns 0 and *puValue and *pfKind on success.

+ *          KLDR_ERR_SYMBOL_NOT_FOUND is returned if the symbol wasn't found.

+ *          Other failures could stem from bad executable format failures,

+ *          read failure in case pvBits isn't specified and no mapping should be used.

+ * @param   pMod            The module.

+ * @param   pvBits          Optional pointer to bits returned by kLdrModGetBits() currently located at BaseAddress.

+ *                          This can be used by some module interpreters to reduce memory consumption.

+ * @param   BaseAddress     The module base address to use when calculating the symbol value.

+ *                          There are two special values that can be used:

+ *                              KLDRMOD_BASEADDRESS_LINK and KLDRMOD_BASEADDRESS_MAP.

+ * @param   iSymbol         The symbol ordinal. (optional)

+ * @param   pchSymbol       The symbol name. (optional)

+ *                          Important, this doesn't have to be a null-terminated string.

+ * @param   cchSymbol       The length of the symbol name.

+ * @param   pszVersion      The symbol version. NULL if not versioned.

+ * @param   pfnGetForwarder The callback to use when resolving a forwarder symbol. This is optional

+ *                          and if not specified KLDR_ERR_FORWARDER is returned instead.

+ * @param   pvUser          The user argument for the pfnGetForwarder callback.

+ * @param   puValue         Where to store the symbol value. (optional)

+ * @param   pfKind          On input one of the KLDRSYMKIND_REQ_* #defines.

+ *                          On output the symbol kind. (optional)

+ */

+int     kLdrModQuerySymbol(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 iSymbol,

+                           const char *pchSymbol, KSIZE cchSymbol, const char *pszVersion,

+                           PFNKLDRMODGETIMPORT pfnGetForwarder, void *pvUser, PKLDRADDR puValue, KU32 *pfKind)

+{

+    KLDRMOD_VALIDATE(pMod);

+    if (!puValue && !pfKind)

+        return KERR_INVALID_PARAMETER;

+    if (puValue)

+        *puValue = 0;

+    if (pfKind)

+        K_VALIDATE_FLAGS(*pfKind, KLDRSYMKIND_REQ_SEGMENTED);

+    return pMod->pOps->pfnQuerySymbol(pMod, pvBits, BaseAddress, iSymbol, pchSymbol, cchSymbol, pszVersion,

+                                      pfnGetForwarder, pvUser, puValue, pfKind);

+}

+

+

+/**

+ * Enumerate the symbols in the module.

+ *

+ * @returns 0 on success and non-zero a status code on failure.

+ * @param   pMod            The module which symbols should be enumerated.

+ * @param   pvBits          Optional pointer to bits returned by kLdrModGetBits() currently located at BaseAddress.

+ *                          This can be used by some module interpreters to reduce memory consumption.

+ * @param   BaseAddress     The module base address to use when calculating the symbol values.

+ *                          There are two special values that could be can:

+ *                              KLDRMOD_BASEADDRESS_LINK and KLDRMOD_BASEADDRESS_MAP.

+ * @param   fFlags          The enumeration flags. A combination of the KLDRMOD_ENUM_SYMS_FLAGS_* \#defines.

+ * @param   pfnCallback     The enumeration callback function.

+ * @param   pvUser          The user argument to the callback function.

+ */

+int     kLdrModEnumSymbols(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 fFlags,

+                           PFNKLDRMODENUMSYMS pfnCallback, void *pvUser)

+{

+    KLDRMOD_VALIDATE(pMod);

+    K_VALIDATE_FLAGS(fFlags, KLDRMOD_ENUM_SYMS_FLAGS_ALL);

+    return pMod->pOps->pfnEnumSymbols(pMod, pvBits, BaseAddress, fFlags, pfnCallback, pvUser);

+}

+

+

+/**

+ * Get the name of an import module by ordinal number.

+ *

+ * @returns 0 and name in pszName on success.

+ *          On buffer overruns KERR_BUFFER_OVERFLOW will be returned.

+ *          On other failures and appropriate error code is returned.

+ * @param   pMod            The module.

+ * @param   pvBits          Optional pointer to bits returned by kLdrModGetBits().

+ *                          This can be used by some module interpreters to reduce memory consumption.

+ * @param   iImport         The import module ordinal number.

+ * @param   pszName         Where to store the name.

+ * @param   cchName         The size of the name buffer.

+ */

+int     kLdrModGetImport(PKLDRMOD pMod, const void *pvBits, KU32 iImport, char *pszName, KSIZE cchName)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnGetImport(pMod, pvBits, iImport, pszName, cchName);

+}

+

+

+/**

+ * Get the number of import modules.

+ *

+ * @returns The number of import modules. -1 if something really bad happens.

+ * @param   pMod            The module.

+ * @param   pvBits          Optional pointer to bits returned by kLdrModGetBits().

+ *                          This can be used by some module interpreters to reduce memory consumption.

+ */

+KI32 kLdrModNumberOfImports(PKLDRMOD pMod, const void *pvBits)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnNumberOfImports(pMod, pvBits);

+}

+

+

+/**

+ * Checks if this module can be executed by the specified arch+cpu.

+ *

+ * @returns 0 if it can, KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE if it can't.

+ *          Other failures may occur and cause other return values.

+ * @param   pMod            The module.

+ * @param   pvBits          Optional pointer to bits returned by kLdrModGetBits().

+ *                          This can be used by some module interpreters to reduce memory consumption.

+ * @param   enmArch         The CPU architecture.

+ * @param   enmCpu          The CPU series/model.

+ */

+int     kLdrModCanExecuteOn(PKLDRMOD pMod, const void *pvBits, KCPUARCH enmArch, KCPU enmCpu)

+{

+    KLDRMOD_VALIDATE(pMod);

+    if (pMod->pOps->pfnCanExecuteOn)

+        return pMod->pOps->pfnCanExecuteOn(pMod, pvBits, enmArch, enmCpu);

+    return kCpuCompare(pMod->enmArch, pMod->enmCpu, enmArch, enmCpu);

+}

+

+

+/**

+ * Gets the image stack info.

+ *

+ * @returns 0 on success, non-zero on failure.

+ * @param   pMod

+ * @param   pvBits          Optional pointer to bits returned by kLdrModGetBits() currently located at BaseAddress.

+ *                          This can be used by some module interpreters to reduce memory consumption.

+ * @param   BaseAddress     The module base address to use when calculating the stack address.

+ *                          There are two special values that can be used:

+ *                              KLDRMOD_BASEADDRESS_LINK and KLDRMOD_BASEADDRESS_MAP.

+ * @param   pStackInfo      The stack information.

+ */

+int     kLdrModGetStackInfo(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRSTACKINFO pStackInfo)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnGetStackInfo(pMod, pvBits, BaseAddress, pStackInfo);

+}

+

+

+/**

+ * Queries the main entrypoint of the module.

+ *

+ * Only executable are supposed to have an main entrypoint, though some object and DLL

+ * formats will also allow this.

+ *

+ * @returns 0 and *pMainEPAddress on success. Non-zero status code on failure.

+ * @param   pMod            The module.

+ * @param   pvBits          Optional pointer to bits returned by kLdrModGetBits() currently located at BaseAddress.

+ *                          This can be used by some module interpreters to reduce memory consumption.

+ * @param   BaseAddress     The module base address to use when calculating the entrypoint address.

+ *                          There are two special values that can be used:

+ *                              KLDRMOD_BASEADDRESS_LINK and KLDRMOD_BASEADDRESS_MAP.

+ * @param   pMainEPAddress  Where to store the entry point address.

+ */

+int     kLdrModQueryMainEntrypoint(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRADDR pMainEPAddress)

+{

+    KLDRMOD_VALIDATE(pMod);

+    *pMainEPAddress = 0;

+    return pMod->pOps->pfnQueryMainEntrypoint(pMod, pvBits, BaseAddress, pMainEPAddress);

+}

+

+

+/**

+ * Queries the image UUID, if the image has one.

+ *

+ * @returns 0 and *pvUuid. Non-zero status code on failure.

+ * @param   pMod            The module.

+ * @param   pvBits          Optional pointer to bits returned by kLdrModGetBits() currently located at BaseAddress.

+ *                          This can be used by some module interpreters to reduce memory consumption.

+ * @param   pvUuid          Where to store the UUID.

+ * @param   cbUuid          Size of the UUID buffer, must be at least 16 bytes.

+ */

+int     kLdrModQueryImageUuid(PKLDRMOD pMod, const void *pvBits, void *pvUuid, KSIZE cbUuid)

+{

+    KLDRMOD_VALIDATE(pMod);

+    if (cbUuid < 16)

+        return KERR_INVALID_SIZE;

+    if (pMod->pOps->pfnQueryImageUuid)

+        return pMod->pOps->pfnQueryImageUuid(pMod, pvBits, pvUuid, cbUuid);

+    return KLDR_ERR_NO_IMAGE_UUID;

+}

+

+

+/**

+ * Queries info about a resource.

+ *

+ * If there are multiple resources matching the criteria, the best or

+ * first match will be return.

+ *

+ *

+ * @returns 0 on success.

+ * @returns Whatever non-zero status returned by pfnCallback (enumeration was stopped).

+ * @returns non-zero kLdr or native status code on failure.

+ *

+ * @param   pMod            The module.

+ * @param   pvBits          Optional pointer to bits returned by kLdrModGetBits() currently located at BaseAddress.

+ *                          This can be used by some module interpreters to reduce memory consumption.

+ * @param   BaseAddress     The module base address to use when calculating the resource addresses.

+ *                          There are two special values that can be used:

+ *                              KLDRMOD_BASEADDRESS_LINK and KLDRMOD_BASEADDRESS_MAP.

+ * @param   idType          The resource type id to match if not NIL_KLDRMOD_RSRC_TYPE_ID.

+ * @param   pszType         The resource type name to match if no NULL.

+ * @param   idName          The resource name id to match if not NIL_KLDRMOD_RSRC_NAME_ID.

+ * @param   pszName         The resource name to match if not NULL.

+ * @param   idLang          The language id to match.

+ * @param   pfnCallback     The callback function.

+ * @param   pvUser          The user argument for the callback.

+ */

+int     kLdrModQueryResource(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 idType, const char *pszType,

+                             KU32 idName, const char *pszName, KU32 idLang, PKLDRADDR pAddrRsrc, KSIZE *pcbRsrc)

+{

+    KLDRMOD_VALIDATE(pMod);

+    if (!pAddrRsrc && !pcbRsrc)

+        return KERR_INVALID_PARAMETER;

+    if (pAddrRsrc)

+        *pAddrRsrc = NIL_KLDRADDR;

+    if (pcbRsrc)

+        *pcbRsrc = 0;

+    return pMod->pOps->pfnQueryResource(pMod, pvBits, BaseAddress, idType, pszType, idName, pszName, idLang, pAddrRsrc, pcbRsrc);

+}

+

+

+/**

+ * Enumerates the resources matching the specfied criteria.

+ *

+ *

+ * @returns 0 on success.

+ * @returns Whatever non-zero status returned by pfnCallback (enumeration was stopped).

+ * @returns non-zero kLdr or native status code on failure.

+ *

+ * @param   pMod            The module.

+ * @param   pvBits          Optional pointer to bits returned by kLdrModGetBits() currently located at BaseAddress.

+ *                          This can be used by some module interpreters to reduce memory consumption.

+ * @param   BaseAddress     The module base address to use when calculating the resource addresses.

+ *                          There are two special values that can be used:

+ *                              KLDRMOD_BASEADDRESS_LINK and KLDRMOD_BASEADDRESS_MAP.

+ * @param   idType          The resource type id to match if not NIL_KLDRMOD_RSRC_TYPE_ID.

+ * @param   pszType         The resource type name to match if no NULL.

+ * @param   idName          The resource name id to match if not NIL_KLDRMOD_RSRC_NAME_ID.

+ * @param   pszName         The resource name to match if not NULL.

+ * @param   idLang          The language id to match.

+ * @param   pfnCallback     The callback function.

+ * @param   pvUser          The user argument for the callback.

+ */

+int     kLdrModEnumResources(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 idType, const char *pszType,

+                             KU32 idName, const char *pszName, KU32 idLang, PFNKLDRENUMRSRC pfnCallback, void *pvUser)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnEnumResources(pMod, pvBits, BaseAddress, idType, pszType, idName, pszName, idLang, pfnCallback, pvUser);

+}

+

+

+/**

+ * Enumerate the debug info formats contained in the executable image.

+ *

+ * @returns 0 on success, non-zero OS or kLdr status code on failure, or non-zero callback status.

+ * @param   pMod            The module.

+ * @param   pvBits          Optional pointer to bits returned by kLdrModGetBits().

+ *                          This can be used by some module interpreters to reduce memory consumption.

+ * @param   pfnCallback     The callback function.

+ * @param   pvUser          The user argument.

+ * @see pg_kDbg for the debug info reader.

+ */

+int     kLdrModEnumDbgInfo(PKLDRMOD pMod, const void *pvBits, PFNKLDRENUMDBG pfnCallback, void *pvUser)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnEnumDbgInfo(pMod, pvBits, pfnCallback, pvUser);

+}

+

+

+/**

+ * Checks if the module has debug info embedded or otherwise associated with it.

+ *

+ * @returns 0 if it has debug info, KLDR_ERR_NO_DEBUG_INFO if no debug info,

+ *          and non-zero OS or kLdr status code on failure.

+ * @param   pMod            The module.

+ * @param   pvBits          Optional pointer to bits returned by kLdrModGetBits().

+ *                          This can be used by some module interpreters to reduce memory consumption.

+ */

+int     kLdrModHasDbgInfo(PKLDRMOD pMod, const void *pvBits)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnHasDbgInfo(pMod, pvBits);

+}

+

+

+/**

+ * May free up some resources held by the module.

+ *

+ * @todo define exactly what it possible to do after this call.

+ *

+ * @returns 0 on success, KLDR_ERR_* on failure.

+ * @param   pMod    The module.

+ */

+int     kLdrModMostlyDone(PKLDRMOD pMod)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnMostlyDone(pMod);

+}

+

+

+/**

+ * Maps the module into the memory of the caller.

+ *

+ * On success the actual addresses for the segments can be found in MapAddress

+ * member of each segment in the segment array.

+ *

+ * @returns 0 on success, non-zero OS or kLdr status code on failure.

+ * @param   pMod            The module to be mapped.

+ * @remark  kLdr only supports one mapping at a time of a module.

+ */

+int     kLdrModMap(PKLDRMOD pMod)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnMap(pMod);

+}

+

+

+/**

+ * Unmaps a module previously mapped by kLdrModMap().

+ *

+ * @returns 0 on success, non-zero OS or kLdr status code on failure.

+ * @param   pMod            The module to unmap.

+ */

+int     kLdrModUnmap(PKLDRMOD pMod)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnUnmap(pMod);

+}

+

+

+/**

+ * Reloads all dirty pages in a module previously mapped by kLdrModMap().

+ *

+ * The module interpreter may omit code pages if it can safely apply code

+ * fixups again in a subsequent kLdrModFixupMapping() call.

+ *

+ * The caller is responsible for freeing TLS before calling this function.

+ *

+ * @returns 0 on success, non-zero OS or kLdr status code on failure.

+ * @param   pMod            The module.

+ */

+int     kLdrModReload(PKLDRMOD pMod)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnReload(pMod);

+}

+

+

+/**

+ * Fixup the mapping made by kLdrModMap().

+ *

+ * The caller is only responsible for not calling this function more than

+ * once without doing kLDrModReload() inbetween.

+ *

+ * @returns 0 on success, non-zero OS or kLdr status code on failure.

+ * @param   pMod            The module.

+ * @param   pfnGetImport    The callback for resolving external (imported) symbols.

+ * @param   pvUser          The callback user argument.

+ */

+int     kLdrModFixupMapping(PKLDRMOD pMod, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnFixupMapping(pMod, pfnGetImport, pvUser);

+}

+

+

+/**

+ * Get the size of the mapped module.

+ *

+ * @returns The size of the mapped module (in bytes).

+ * @param   pMod            The module.

+ */

+KLDRADDR kLdrModSize(PKLDRMOD pMod)

+{

+    KLDRMOD_VALIDATE_EX(pMod, 0);

+    return pMod->pOps->pfnSize(pMod);

+}

+

+

+/**

+ * Gets the module bits.

+ *

+ * The module interpreter will fill a mapping allocated by the caller with the

+ * module bits reallocated to the specified address.

+ *

+ * @returns 0 on succes, non-zero OS or kLdr status code on failure.

+ * @param   pMod            The module.

+ * @param   pvBits          Where to put the bits.

+ * @param   BaseAddress     The base address that should correspond to the first byte in pvBits

+ *                          upon return.

+ * @param   pfnGetImport    The callback ufor resolving external (imported) symbols.

+ * @param   pvUser          The callback user argument.

+ */

+int     kLdrModGetBits(PKLDRMOD pMod, void *pvBits, KLDRADDR BaseAddress, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnGetBits(pMod, pvBits, BaseAddress, pfnGetImport, pvUser);

+}

+

+

+/**

+ * Relocates the module bits previously obtained by kLdrModGetBits().

+ *

+ * @returns 0 on succes, non-zero OS or kLdr status code on failure.

+ * @param   pMod            The module.

+ * @param   pvBits          Where to put the bits.

+ * @param   NewBaseAddress  The new base address.

+ * @param   OldBaseAddress  The old base address (i.e. the one specified to kLdrModGetBits() or as

+ *                          NewBaseAddressto the previous kLdrModRelocateBits() call).

+ * @param   pfnGetImport    The callback ufor resolving external (imported) symbols.

+ * @param   pvUser          The callback user argument.

+ */

+int     kLdrModRelocateBits(PKLDRMOD pMod, void *pvBits, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress,

+                            PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnRelocateBits(pMod, pvBits, NewBaseAddress, OldBaseAddress, pfnGetImport, pvUser);

+}

+

+

+/**

+ * Allocates Thread Local Storage for module mapped by kLdrModMap().

+ *

+ * Calling kLdrModAllocTLS() more than once without calling kLdrModFreeTLS()

+ * between each invocation is not supported.

+ *

+ * @returns 0 on success, non-zero OS or kLdr status code on failure.

+ * @param   pMod            The module.

+ * @param   pvMapping       The external mapping address or RTLDRMOD_INT_MAP.

+ */

+int     kLdrModAllocTLS(PKLDRMOD pMod, void *pvMapping)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnAllocTLS(pMod, pvMapping);

+}

+

+

+/**

+ * Frees Thread Local Storage previously allocated by kLdrModAllocTLS().

+ *

+ * The caller is responsible for only calling kLdrModFreeTLS() once

+ * after calling kLdrModAllocTLS().

+ *

+ * @returns 0 on success, non-zero OS or kLdr status code on failure.

+ * @param   pMod            The module.

+ * @param   pvMapping       The external mapping address or RTLDRMOD_INT_MAP.

+ */

+void    kLdrModFreeTLS(PKLDRMOD pMod, void *pvMapping)

+{

+    KLDRMOD_VALIDATE_VOID(pMod);

+    pMod->pOps->pfnFreeTLS(pMod, pvMapping);

+}

+

+

+

+

+/**

+ * Call the module initializiation function of a mapped module (if any).

+ *

+ * @returns 0 on success or no init function, non-zero on init function failure or invalid pMod.

+ * @param   pMod            The module.

+ * @param   pvMapping       The external mapping address or RTLDRMOD_INT_MAP.

+ * @param   uHandle         The module handle to use if any of the init functions requires the module handle.

+ */

+int     kLdrModCallInit(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnCallInit(pMod, pvMapping, uHandle);

+}

+

+

+/**

+ * Call the module termination function of a mapped module (if any).

+ *

+ * @returns 0 on success or no term function, non-zero on invalid pMod.

+ * @param   pMod            The module.

+ * @param   pvMapping       The external mapping address or RTLDRMOD_INT_MAP.

+ * @param   uHandle         The module handle to use if any of the term functions requires the module handle.

+ *

+ * @remark  Termination function failure will be ignored by the module interpreter.

+ */

+int     kLdrModCallTerm(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle)

+{

+    KLDRMOD_VALIDATE(pMod);

+    return pMod->pOps->pfnCallTerm(pMod, pvMapping, uHandle);

+}

+

+

+/**

+ * Call the thread attach or detach function of a mapped module (if any).

+ *

+ * Any per-thread TLS initialization/termination will have to be done at this time too.

+ *

+ * @returns 0 on success or no attach/detach function, non-zero on attach failure or invalid pMod.

+ * @param   pMod            The module.

+ * @param   pvMapping       The external mapping address or RTLDRMOD_INT_MAP.

+ * @param   uHandle         The module handle to use if any of the thread attach/detach functions

+ *                          requires the module handle.

+ *

+ * @remark  Detach function failure will be ignored by the module interpreter.

+ */

+int     kLdrModCallThread(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle, unsigned fAttachingOrDetaching)

+{

+    KLDRMOD_VALIDATE(pMod);

+    K_VALIDATE_FLAGS(fAttachingOrDetaching, 1);

+    return pMod->pOps->pfnCallThread(pMod, pvMapping, uHandle, fAttachingOrDetaching);

+}

+

diff --git a/src/lib/kStuff/kLdr/kLdrModLX.c b/src/lib/kStuff/kLdr/kLdrModLX.c
new file mode 100644
index 0000000..073b129
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrModLX.c
@@ -0,0 +1,2701 @@
+/* $Id: kLdrModLX.c 117 2020-03-15 15:23:36Z bird $ */
+/** @file
+ * kLdr - The Module Interpreter for the Linear eXecutable (LX) Format.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kLdr.h>
+#include "kLdrInternal.h"
+#include <k/kLdrFmts/lx.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** @def KLDRMODLX_STRICT
+ * Define KLDRMODLX_STRICT to enabled strict checks in KLDRMODLX. */
+#define KLDRMODLX_STRICT 1
+
+/** @def KLDRMODLX_ASSERT
+ * Assert that an expression is true when KLDR_STRICT is defined.
+ */
+#ifdef KLDRMODLX_STRICT
+# define KLDRMODLX_ASSERT(expr)  kHlpAssert(expr)
+#else
+# define KLDRMODLX_ASSERT(expr)  do {} while (0)
+#endif
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Instance data for the LX module interpreter.
+ */
+typedef struct KLDRMODLX
+{
+    /** Pointer to the module. (Follows the section table.) */
+    PKLDRMOD                pMod;
+    /** Pointer to the user mapping. */
+    const void             *pvMapping;
+    /** The size of the mapped LX image. */
+    KSIZE                   cbMapped;
+    /** Reserved flags. */
+    KU32                    f32Reserved;
+
+    /** The offset of the LX header. */
+    KLDRFOFF                offHdr;
+    /** Copy of the LX header. */
+    struct e32_exe          Hdr;
+
+    /** Pointer to the loader section.
+     * Allocated together with this strcture. */
+    const KU8              *pbLoaderSection;
+    /** Pointer to the last byte in the loader section. */
+    const KU8              *pbLoaderSectionLast;
+    /** Pointer to the object table in the loader section. */
+    const struct o32_obj   *paObjs;
+    /** Pointer to the object page map table in the loader section. */
+    const struct o32_map   *paPageMappings;
+    /** Pointer to the resource table in the loader section. */
+    const struct rsrc32    *paRsrcs;
+    /** Pointer to the resident name table in the loader section. */
+    const KU8              *pbResNameTab;
+    /** Pointer to the entry table in the loader section. */
+    const KU8              *pbEntryTab;
+
+    /** Pointer to the non-resident name table. */
+    KU8                    *pbNonResNameTab;
+    /** Pointer to the last byte in the non-resident name table. */
+    const KU8              *pbNonResNameTabLast;
+
+    /** Pointer to the fixup section. */
+    KU8                    *pbFixupSection;
+    /** Pointer to the last byte in the fixup section. */
+    const KU8              *pbFixupSectionLast;
+    /** Pointer to the fixup page table within pvFixupSection. */
+    const KU32             *paoffPageFixups;
+    /** Pointer to the fixup record table within pvFixupSection. */
+    const KU8              *pbFixupRecs;
+    /** Pointer to the import module name table within pvFixupSection. */
+    const KU8              *pbImportMods;
+    /** Pointer to the import module name table within pvFixupSection. */
+    const KU8              *pbImportProcs;
+} KLDRMODLX, *PKLDRMODLX;
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static int kldrModLXHasDbgInfo(PKLDRMOD pMod, const void *pvBits);
+static int kldrModLXRelocateBits(PKLDRMOD pMod, void *pvBits, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress,
+                                 PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+static int kldrModLXDoCreate(PKRDR pRdr, KLDRFOFF offNewHdr, PKLDRMODLX *ppModLX);
+static const KU8 *kldrModLXDoNameTableLookupByOrdinal(const KU8 *pbNameTable, KSSIZE cbNameTable, KU32 iOrdinal);
+static int kldrModLXDoNameLookup(PKLDRMODLX pModLX, const char *pchSymbol, KSIZE cchSymbol, KU32 *piSymbol);
+static const KU8 *kldrModLXDoNameTableLookupByName(const KU8 *pbNameTable, KSSIZE cbNameTable,
+                                                       const char *pchSymbol, KSIZE cchSymbol);
+static int kldrModLXDoLoadBits(PKLDRMODLX pModLX, void *pvBits);
+static int kldrModLXDoIterDataUnpacking(KU8 *pbDst, const KU8 *pbSrc, int cbSrc);
+static int kldrModLXDoIterData2Unpacking(KU8 *pbDst, const KU8 *pbSrc, int cbSrc);
+static void kLdrModLXMemCopyW(KU8 *pbDst, const KU8 *pbSrc, int cb);
+static int kldrModLXDoProtect(PKLDRMODLX pModLX, void *pvBits, unsigned fUnprotectOrProtect);
+static int kldrModLXDoCallDLL(PKLDRMODLX pModLX, void *pvMapping, unsigned uOp, KUPTR uHandle);
+static int kldrModLXDoForwarderQuery(PKLDRMODLX pModLX, const struct e32_entry *pEntry,
+                                     PFNKLDRMODGETIMPORT pfnGetForwarder, void *pvUser, PKLDRADDR puValue, KU32 *pfKind);
+static int kldrModLXDoLoadFixupSection(PKLDRMODLX pModLX);
+static int kldrModLXDoReloc(KU8 *pbPage, int off, KLDRADDR PageAddress, const struct r32_rlc *prlc,
+                            int iSelector, KLDRADDR uValue, KU32 fKind);
+
+
+/**
+ * Create a loader module instance interpreting the executable image found
+ * in the specified file provider instance.
+ *
+ * @returns 0 on success and *ppMod pointing to a module instance.
+ *          On failure, a non-zero OS specific error code is returned.
+ * @param   pOps            Pointer to the registered method table.
+ * @param   pRdr            The file provider instance to use.
+ * @param   fFlags          Flags, MBZ.
+ * @param   enmCpuArch      The desired CPU architecture. KCPUARCH_UNKNOWN means
+ *                          anything goes, but with a preference for the current
+ *                          host architecture.
+ * @param   offNewHdr       The offset of the new header in MZ files. -1 if not found.
+ * @param   ppMod           Where to store the module instance pointer.
+ */
+static int kldrModLXCreate(PCKLDRMODOPS pOps, PKRDR pRdr, KU32 fFlags, KCPUARCH enmCpuArch, KLDRFOFF offNewHdr, PPKLDRMOD ppMod)
+{
+    PKLDRMODLX pModLX;
+    int rc;
+    K_NOREF(fFlags);
+
+    /*
+     * Create the instance data and do a minimal header validation.
+     */
+    rc = kldrModLXDoCreate(pRdr, offNewHdr, &pModLX);
+    if (!rc)
+    {
+        /*
+         * Match up against the requested CPU architecture.
+         */
+        if (    enmCpuArch == KCPUARCH_UNKNOWN
+            ||  pModLX->pMod->enmArch == enmCpuArch)
+        {
+            pModLX->pMod->pOps = pOps;
+            pModLX->pMod->u32Magic = KLDRMOD_MAGIC;
+            *ppMod = pModLX->pMod;
+            return 0;
+        }
+        rc = KLDR_ERR_CPU_ARCH_MISMATCH;
+    }
+    kHlpFree(pModLX);
+    return rc;
+}
+
+
+/**
+ * Separate function for reading creating the LX module instance to
+ * simplify cleanup on failure.
+ */
+static int kldrModLXDoCreate(PKRDR pRdr, KLDRFOFF offNewHdr, PKLDRMODLX *ppModLX)
+{
+    struct e32_exe Hdr;
+    PKLDRMODLX pModLX;
+    PKLDRMOD pMod;
+    KSIZE cb;
+    KSIZE cchFilename;
+    KSIZE offLdrStuff;
+    KU32 off, offEnd;
+    KU32 i;
+    int rc;
+    int fCanOptimizeMapping;
+    KU32 NextRVA;
+    *ppModLX = NULL;
+
+    /*
+     * Read the signature and file header.
+     */
+    rc = kRdrRead(pRdr, &Hdr, sizeof(Hdr), offNewHdr > 0 ? offNewHdr : 0);
+    if (rc)
+        return rc;
+    if (    Hdr.e32_magic[0] != E32MAGIC1
+        ||  Hdr.e32_magic[1] != E32MAGIC2)
+        return KLDR_ERR_UNKNOWN_FORMAT;
+
+    /* We're not interested in anything but x86 images. */
+    if (    Hdr.e32_level != E32LEVEL
+        ||  Hdr.e32_border != E32LEBO
+        ||  Hdr.e32_worder != E32LEWO
+        ||  Hdr.e32_cpu < E32CPU286
+        ||  Hdr.e32_cpu > E32CPU486
+        ||  Hdr.e32_pagesize != OBJPAGELEN
+        )
+        return KLDR_ERR_LX_BAD_HEADER;
+
+    /* Some rough sanity checks. */
+    offEnd = kRdrSize(pRdr) >= (KLDRFOFF)~(KU32)16 ? ~(KU32)16 : (KU32)kRdrSize(pRdr);
+    if (    Hdr.e32_itermap > offEnd
+        ||  Hdr.e32_datapage > offEnd
+        ||  Hdr.e32_nrestab > offEnd
+        ||  Hdr.e32_nrestab + Hdr.e32_cbnrestab > offEnd
+        ||  Hdr.e32_ldrsize > offEnd - offNewHdr - sizeof(Hdr)
+        ||  Hdr.e32_fixupsize > offEnd - offNewHdr - sizeof(Hdr)
+        ||  Hdr.e32_fixupsize + Hdr.e32_ldrsize > offEnd - offNewHdr - sizeof(Hdr))
+        return KLDR_ERR_LX_BAD_HEADER;
+
+    /* Verify the loader section. */
+    offEnd = Hdr.e32_objtab + Hdr.e32_ldrsize;
+    if (Hdr.e32_objtab < sizeof(Hdr))
+        return KLDR_ERR_LX_BAD_LOADER_SECTION;
+    off = Hdr.e32_objtab + sizeof(struct o32_obj) * Hdr.e32_objcnt;
+    if (off > offEnd)
+        return KLDR_ERR_LX_BAD_LOADER_SECTION;
+    if (    Hdr.e32_objmap
+        &&  (Hdr.e32_objmap < off || Hdr.e32_objmap > offEnd))
+        return KLDR_ERR_LX_BAD_LOADER_SECTION;
+    if (    Hdr.e32_rsrccnt
+        && (   Hdr.e32_rsrctab < off
+            || Hdr.e32_rsrctab > offEnd
+            || Hdr.e32_rsrctab + sizeof(struct rsrc32) * Hdr.e32_rsrccnt > offEnd))
+        return KLDR_ERR_LX_BAD_LOADER_SECTION;
+    if (    Hdr.e32_restab
+        &&  (Hdr.e32_restab < off || Hdr.e32_restab > offEnd - 2))
+        return KLDR_ERR_LX_BAD_LOADER_SECTION;
+    if (    Hdr.e32_enttab
+        &&  (Hdr.e32_enttab < off || Hdr.e32_enttab >= offEnd))
+        return KLDR_ERR_LX_BAD_LOADER_SECTION;
+    if (    Hdr.e32_dircnt
+        && (Hdr.e32_dirtab < off || Hdr.e32_dirtab > offEnd - 2))
+        return KLDR_ERR_LX_BAD_LOADER_SECTION;
+
+    /* Verify the fixup section. */
+    off = offEnd;
+    offEnd = off + Hdr.e32_fixupsize;
+    if (    Hdr.e32_fpagetab
+        &&  (Hdr.e32_fpagetab < off || Hdr.e32_fpagetab > offEnd))
+    {
+        /*
+         * wlink mixes the fixup section and the loader section.
+         */
+        off = Hdr.e32_fpagetab;
+        offEnd = off + Hdr.e32_fixupsize;
+        Hdr.e32_ldrsize = off - Hdr.e32_objtab;
+    }
+    if (    Hdr.e32_frectab
+        &&  (Hdr.e32_frectab < off || Hdr.e32_frectab > offEnd))
+        return KLDR_ERR_LX_BAD_FIXUP_SECTION;
+    if (    Hdr.e32_impmod
+        &&  (Hdr.e32_impmod < off || Hdr.e32_impmod > offEnd || Hdr.e32_impmod + Hdr.e32_impmodcnt > offEnd))
+        return KLDR_ERR_LX_BAD_FIXUP_SECTION;
+    if (    Hdr.e32_impproc
+        &&  (Hdr.e32_impproc < off || Hdr.e32_impproc > offEnd))
+        return KLDR_ERR_LX_BAD_FIXUP_SECTION;
+
+    /*
+     * Calc the instance size, allocate and initialize it.
+     */
+    cchFilename = kHlpStrLen(kRdrName(pRdr));
+    cb = K_ALIGN_Z(sizeof(KLDRMODLX), 8)
+       + K_ALIGN_Z(K_OFFSETOF(KLDRMOD, aSegments[Hdr.e32_objcnt + 1]), 8)
+       + K_ALIGN_Z(cchFilename + 1, 8);
+    offLdrStuff = cb;
+    cb += Hdr.e32_ldrsize + 2; /* +2 for two extra zeros. */
+    pModLX = (PKLDRMODLX)kHlpAlloc(cb);
+    if (!pModLX)
+        return KERR_NO_MEMORY;
+    *ppModLX = pModLX;
+
+    /* KLDRMOD */
+    pMod = (PKLDRMOD)((KU8 *)pModLX + K_ALIGN_Z(sizeof(KLDRMODLX), 8));
+    pMod->pvData = pModLX;
+    pMod->pRdr = pRdr;
+    pMod->pOps = NULL;      /* set upon success. */
+    pMod->cSegments = Hdr.e32_objcnt;
+    pMod->cchFilename = (KU32)cchFilename;
+    pMod->pszFilename = (char *)K_ALIGN_P(&pMod->aSegments[pMod->cSegments], 8);
+    kHlpMemCopy((char *)pMod->pszFilename, kRdrName(pRdr), cchFilename + 1);
+    pMod->pszName = NULL; /* finalized further down */
+    pMod->cchName = 0;
+    pMod->fFlags = 0;
+    switch (Hdr.e32_cpu)
+    {
+        case E32CPU286:
+            pMod->enmCpu = KCPU_I80286;
+            pMod->enmArch = KCPUARCH_X86_16;
+            break;
+        case E32CPU386:
+            pMod->enmCpu = KCPU_I386;
+            pMod->enmArch = KCPUARCH_X86_32;
+            break;
+        case E32CPU486:
+            pMod->enmCpu = KCPU_I486;
+            pMod->enmArch = KCPUARCH_X86_32;
+            break;
+    }
+    pMod->enmEndian = KLDRENDIAN_LITTLE;
+    pMod->enmFmt = KLDRFMT_LX;
+    switch (Hdr.e32_mflags & E32MODMASK)
+    {
+        case E32MODEXE:
+            pMod->enmType = !(Hdr.e32_mflags & E32NOINTFIX)
+                ? KLDRTYPE_EXECUTABLE_RELOCATABLE
+                : KLDRTYPE_EXECUTABLE_FIXED;
+            break;
+
+        case E32MODDLL:
+        case E32PROTDLL:
+        case E32MODPROTDLL:
+            pMod->enmType = !(Hdr.e32_mflags & E32SYSDLL)
+                ? KLDRTYPE_SHARED_LIBRARY_RELOCATABLE
+                : KLDRTYPE_SHARED_LIBRARY_FIXED;
+            break;
+
+        case E32MODPDEV:
+        case E32MODVDEV:
+            pMod->enmType = KLDRTYPE_SHARED_LIBRARY_RELOCATABLE;
+            break;
+    }
+    pMod->u32Magic = 0;     /* set upon success. */
+
+    /* KLDRMODLX */
+    pModLX->pMod = pMod;
+    pModLX->pvMapping = 0;
+    pModLX->cbMapped = 0;
+    pModLX->f32Reserved = 0;
+
+    pModLX->offHdr = offNewHdr >= 0 ? offNewHdr : 0;
+    kHlpMemCopy(&pModLX->Hdr, &Hdr, sizeof(Hdr));
+
+    pModLX->pbLoaderSection = (KU8 *)pModLX + offLdrStuff;
+    pModLX->pbLoaderSectionLast = pModLX->pbLoaderSection + pModLX->Hdr.e32_ldrsize - 1;
+    pModLX->paObjs = NULL;
+    pModLX->paPageMappings = NULL;
+    pModLX->paRsrcs = NULL;
+    pModLX->pbResNameTab = NULL;
+    pModLX->pbEntryTab = NULL;
+
+    pModLX->pbNonResNameTab = NULL;
+    pModLX->pbNonResNameTabLast = NULL;
+
+    pModLX->pbFixupSection = NULL;
+    pModLX->pbFixupSectionLast = NULL;
+    pModLX->paoffPageFixups = NULL;
+    pModLX->pbFixupRecs = NULL;
+    pModLX->pbImportMods = NULL;
+    pModLX->pbImportProcs = NULL;
+
+    /*
+     * Read the loader data.
+     */
+    rc = kRdrRead(pRdr, (void *)pModLX->pbLoaderSection, pModLX->Hdr.e32_ldrsize, pModLX->Hdr.e32_objtab + pModLX->offHdr);
+    if (rc)
+        return rc;
+    ((KU8 *)pModLX->pbLoaderSectionLast)[1] = 0;
+    ((KU8 *)pModLX->pbLoaderSectionLast)[2] = 0;
+    if (pModLX->Hdr.e32_objcnt)
+        pModLX->paObjs = (const struct o32_obj *)pModLX->pbLoaderSection;
+    if (pModLX->Hdr.e32_objmap)
+        pModLX->paPageMappings = (const struct o32_map *)(pModLX->pbLoaderSection + pModLX->Hdr.e32_objmap - pModLX->Hdr.e32_objtab);
+    if (pModLX->Hdr.e32_rsrccnt)
+        pModLX->paRsrcs = (const struct rsrc32 *)(pModLX->pbLoaderSection + pModLX->Hdr.e32_rsrctab - pModLX->Hdr.e32_objtab);
+    if (pModLX->Hdr.e32_restab)
+        pModLX->pbResNameTab = pModLX->pbLoaderSection + pModLX->Hdr.e32_restab - pModLX->Hdr.e32_objtab;
+    if (pModLX->Hdr.e32_enttab)
+        pModLX->pbEntryTab = pModLX->pbLoaderSection + pModLX->Hdr.e32_enttab - pModLX->Hdr.e32_objtab;
+
+    /*
+     * Get the soname from the resident name table.
+     * Very convenient that it's the 0 ordinal, because then we get a
+     * free string terminator.
+     * (The table entry consists of a pascal string followed by a 16-bit ordinal.)
+     */
+    if (pModLX->pbResNameTab)
+        pMod->pszName = (const char *)kldrModLXDoNameTableLookupByOrdinal(pModLX->pbResNameTab,
+                                                                          pModLX->pbLoaderSectionLast - pModLX->pbResNameTab + 1,
+                                                                          0);
+    if (!pMod->pszName)
+        return KLDR_ERR_LX_NO_SONAME;
+    pMod->cchName = *(const KU8 *)pMod->pszName++;
+    if (pMod->cchName != kHlpStrLen(pMod->pszName))
+        return KLDR_ERR_LX_BAD_SONAME;
+
+    /*
+     * Quick validation of the object table.
+     */
+    cb = 0;
+    for (i = 0; i < pMod->cSegments; i++)
+    {
+        if (pModLX->paObjs[i].o32_base & (OBJPAGELEN - 1))
+            return KLDR_ERR_LX_BAD_OBJECT_TABLE;
+        if (pModLX->paObjs[i].o32_base + pModLX->paObjs[i].o32_size <= pModLX->paObjs[i].o32_base)
+            return KLDR_ERR_LX_BAD_OBJECT_TABLE;
+        if (pModLX->paObjs[i].o32_mapsize > (pModLX->paObjs[i].o32_size + (OBJPAGELEN - 1)))
+            return KLDR_ERR_LX_BAD_OBJECT_TABLE;
+        if (    pModLX->paObjs[i].o32_mapsize
+            &&  (   (KU8 *)&pModLX->paPageMappings[pModLX->paObjs[i].o32_pagemap] > pModLX->pbLoaderSectionLast
+                 || (KU8 *)&pModLX->paPageMappings[pModLX->paObjs[i].o32_pagemap + pModLX->paObjs[i].o32_mapsize]
+                     > pModLX->pbLoaderSectionLast))
+            return KLDR_ERR_LX_BAD_OBJECT_TABLE;
+        if (i > 0 && !(pModLX->paObjs[i].o32_flags & OBJRSRC))
+        {
+            if (pModLX->paObjs[i].o32_base <= pModLX->paObjs[i - 1].o32_base)
+                return KLDR_ERR_LX_BAD_OBJECT_TABLE;
+            if (pModLX->paObjs[i].o32_base < pModLX->paObjs[i - 1].o32_base + pModLX->paObjs[i - 1].o32_mapsize)
+                return KLDR_ERR_LX_BAD_OBJECT_TABLE;
+        }
+    }
+
+    /*
+     * Check if we can optimize the mapping by using a different
+     * object alignment. The linker typically uses 64KB alignment,
+     * we can easily get away with page alignment in most cases.
+     */
+    fCanOptimizeMapping = !(Hdr.e32_mflags & (E32NOINTFIX | E32SYSDLL));
+    NextRVA = 0;
+
+    /*
+     * Setup the KLDRMOD segment array.
+     */
+    for (i = 0; i < pMod->cSegments; i++)
+    {
+        /* unused */
+        pMod->aSegments[i].pvUser = NULL;
+        pMod->aSegments[i].MapAddress = 0;
+        pMod->aSegments[i].pchName = NULL;
+        pMod->aSegments[i].cchName = 0;
+        pMod->aSegments[i].offFile = -1;
+        pMod->aSegments[i].cbFile = -1;
+        pMod->aSegments[i].SelFlat = 0;
+        pMod->aSegments[i].Sel16bit = 0;
+
+        /* flags */
+        pMod->aSegments[i].fFlags = 0;
+        if (pModLX->paObjs[i].o32_flags & OBJBIGDEF)
+            pMod->aSegments[i].fFlags = KLDRSEG_FLAG_16BIT;
+        if (pModLX->paObjs[i].o32_flags & OBJALIAS16)
+            pMod->aSegments[i].fFlags = KLDRSEG_FLAG_OS2_ALIAS16;
+        if (pModLX->paObjs[i].o32_flags & OBJCONFORM)
+            pMod->aSegments[i].fFlags = KLDRSEG_FLAG_OS2_CONFORM;
+        if (pModLX->paObjs[i].o32_flags & OBJIOPL)
+            pMod->aSegments[i].fFlags = KLDRSEG_FLAG_OS2_IOPL;
+
+        /* size and addresses */
+        pMod->aSegments[i].Alignment   = OBJPAGELEN;
+        pMod->aSegments[i].cb          = pModLX->paObjs[i].o32_size;
+        pMod->aSegments[i].LinkAddress = pModLX->paObjs[i].o32_base;
+        pMod->aSegments[i].RVA         = NextRVA;
+        if (    fCanOptimizeMapping
+            ||  i + 1 >= pMod->cSegments
+            ||  (pModLX->paObjs[i].o32_flags & OBJRSRC)
+            ||  (pModLX->paObjs[i + 1].o32_flags & OBJRSRC))
+            pMod->aSegments[i].cbMapped = K_ALIGN_Z(pModLX->paObjs[i].o32_size, OBJPAGELEN);
+        else
+            pMod->aSegments[i].cbMapped = pModLX->paObjs[i + 1].o32_base - pModLX->paObjs[i].o32_base;
+        NextRVA += (KU32)pMod->aSegments[i].cbMapped;
+
+        /* protection */
+        switch (  pModLX->paObjs[i].o32_flags
+                & (OBJSHARED | OBJREAD | OBJWRITE | OBJEXEC))
+        {
+            case 0:
+            case OBJSHARED:
+                pMod->aSegments[i].enmProt = KPROT_NOACCESS;
+                break;
+            case OBJREAD:
+            case OBJREAD | OBJSHARED:
+                pMod->aSegments[i].enmProt = KPROT_READONLY;
+                break;
+            case OBJWRITE:
+            case OBJWRITE | OBJREAD:
+                pMod->aSegments[i].enmProt = KPROT_WRITECOPY;
+                break;
+            case OBJWRITE | OBJSHARED:
+            case OBJWRITE | OBJSHARED | OBJREAD:
+                pMod->aSegments[i].enmProt = KPROT_READWRITE;
+                break;
+            case OBJEXEC:
+            case OBJEXEC | OBJSHARED:
+                pMod->aSegments[i].enmProt = KPROT_EXECUTE;
+                break;
+            case OBJEXEC | OBJREAD:
+            case OBJEXEC | OBJREAD | OBJSHARED:
+                pMod->aSegments[i].enmProt = KPROT_EXECUTE_READ;
+                break;
+            case OBJEXEC | OBJWRITE:
+            case OBJEXEC | OBJWRITE | OBJREAD:
+                pMod->aSegments[i].enmProt = KPROT_EXECUTE_WRITECOPY;
+                break;
+            case OBJEXEC | OBJWRITE | OBJSHARED:
+            case OBJEXEC | OBJWRITE | OBJSHARED | OBJREAD:
+                pMod->aSegments[i].enmProt = KPROT_EXECUTE_READWRITE;
+                break;
+        }
+        if ((pModLX->paObjs[i].o32_flags & (OBJREAD | OBJWRITE | OBJEXEC | OBJRSRC)) == OBJRSRC)
+            pMod->aSegments[i].enmProt = KPROT_READONLY;
+        /*pMod->aSegments[i].f16bit = !(pModLX->paObjs[i].o32_flags & OBJBIGDEF)
+        pMod->aSegments[i].fIOPL = !(pModLX->paObjs[i].o32_flags & OBJIOPL)
+        pMod->aSegments[i].fConforming = !(pModLX->paObjs[i].o32_flags & OBJCONFORM) */
+    }
+
+    /* set the mapping size */
+    pModLX->cbMapped = NextRVA;
+
+    /*
+     * We're done.
+     */
+    *ppModLX = pModLX;
+    return 0;
+}
+
+
+/** @copydoc KLDRMODOPS::pfnDestroy */
+static int kldrModLXDestroy(PKLDRMOD pMod)
+{
+    PKLDRMODLX pModLX = (PKLDRMODLX)pMod->pvData;
+    int rc = 0;
+    KLDRMODLX_ASSERT(!pModLX->pvMapping);
+
+    if (pMod->pRdr)
+    {
+        rc = kRdrClose(pMod->pRdr);
+        pMod->pRdr = NULL;
+    }
+    if (pModLX->pbNonResNameTab)
+    {
+        kHlpFree(pModLX->pbNonResNameTab);
+        pModLX->pbNonResNameTab = NULL;
+    }
+    if (pModLX->pbFixupSection)
+    {
+        kHlpFree(pModLX->pbFixupSection);
+        pModLX->pbFixupSection = NULL;
+    }
+    pMod->u32Magic = 0;
+    pMod->pOps = NULL;
+    kHlpFree(pModLX);
+    return rc;
+}
+
+
+/**
+ * Resolved base address aliases.
+ *
+ * @param   pModLX          The interpreter module instance
+ * @param   pBaseAddress    The base address, IN & OUT.
+ */
+static void kldrModLXResolveBaseAddress(PKLDRMODLX pModLX, PKLDRADDR pBaseAddress)
+{
+    if (*pBaseAddress == KLDRMOD_BASEADDRESS_MAP)
+        *pBaseAddress = pModLX->pMod->aSegments[0].MapAddress;
+    else if (*pBaseAddress == KLDRMOD_BASEADDRESS_LINK)
+        *pBaseAddress = pModLX->pMod->aSegments[0].LinkAddress;
+}
+
+
+/** @copydoc kLdrModQuerySymbol */
+static int kldrModLXQuerySymbol(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 iSymbol,
+                                const char *pchSymbol, KSIZE cchSymbol, const char *pszVersion,
+                                PFNKLDRMODGETIMPORT pfnGetForwarder, void *pvUser, PKLDRADDR puValue, KU32 *pfKind)
+{
+    PKLDRMODLX                  pModLX = (PKLDRMODLX)pMod->pvData;
+    KU32                        iOrdinal;
+    int                         rc;
+    const struct b32_bundle     *pBundle;
+    K_NOREF(pvBits);
+    K_NOREF(pszVersion);
+
+    /*
+     * Give up at once if there is no entry table.
+     */
+    if (!pModLX->Hdr.e32_enttab)
+        return KLDR_ERR_SYMBOL_NOT_FOUND;
+
+    /*
+     * Translate the symbol name into an ordinal.
+     */
+    if (pchSymbol)
+    {
+        rc = kldrModLXDoNameLookup(pModLX, pchSymbol, cchSymbol, &iSymbol);
+        if (rc)
+            return rc;
+    }
+
+    /*
+     * Iterate the entry table.
+     * (The entry table is made up of bundles of similar exports.)
+     */
+    iOrdinal = 1;
+    pBundle = (const struct b32_bundle *)pModLX->pbEntryTab;
+    while (pBundle->b32_cnt && iOrdinal <= iSymbol)
+    {
+        static const KSIZE s_cbEntry[] = { 0, 3, 5, 5, 7 };
+
+        /*
+         * Check for a hit first.
+         */
+        iOrdinal += pBundle->b32_cnt;
+        if (iSymbol < iOrdinal)
+        {
+            KU32 offObject;
+            const struct e32_entry *pEntry = (const struct e32_entry *)((KUPTR)(pBundle + 1)
+                                                                        +   (iSymbol - (iOrdinal - pBundle->b32_cnt))
+                                                                          * s_cbEntry[pBundle->b32_type]);
+
+            /*
+             * Calculate the return address.
+             */
+            kldrModLXResolveBaseAddress(pModLX, &BaseAddress);
+            switch (pBundle->b32_type)
+            {
+                /* empty bundles are place holders unused ordinal ranges. */
+                case EMPTY:
+                    return KLDR_ERR_SYMBOL_NOT_FOUND;
+
+                /* e32_flags + a 16-bit offset. */
+                case ENTRY16:
+                    offObject = pEntry->e32_variant.e32_offset.offset16;
+                    if (pfKind)
+                        *pfKind = KLDRSYMKIND_16BIT | KLDRSYMKIND_NO_TYPE;
+                    break;
+
+                /* e32_flags + a 16-bit offset + a 16-bit callgate selector. */
+                case GATE16:
+                    offObject = pEntry->e32_variant.e32_callgate.offset;
+                    if (pfKind)
+                        *pfKind = KLDRSYMKIND_16BIT | KLDRSYMKIND_CODE;
+                    break;
+
+                /* e32_flags + a 32-bit offset. */
+                case ENTRY32:
+                    offObject = pEntry->e32_variant.e32_offset.offset32;
+                    if (pfKind)
+                        *pfKind = KLDRSYMKIND_32BIT;
+                    break;
+
+                /* e32_flags + 16-bit import module ordinal + a 32-bit procname or ordinal. */
+                case ENTRYFWD:
+                    return kldrModLXDoForwarderQuery(pModLX, pEntry, pfnGetForwarder, pvUser, puValue, pfKind);
+
+                default:
+                    /* anyone actually using TYPEINFO will end up here. */
+                    KLDRMODLX_ASSERT(!"Bad bundle type");
+                    return KLDR_ERR_LX_BAD_BUNDLE;
+            }
+
+            /*
+             * Validate the object number and calc the return address.
+             */
+            if (    pBundle->b32_obj <= 0
+                ||  pBundle->b32_obj > pMod->cSegments)
+                return KLDR_ERR_LX_BAD_BUNDLE;
+            if (puValue)
+                *puValue = BaseAddress
+                         + offObject
+                         + pMod->aSegments[pBundle->b32_obj - 1].RVA;
+            return 0;
+        }
+
+        /*
+         * Skip the bundle.
+         */
+        if (pBundle->b32_type > ENTRYFWD)
+        {
+            KLDRMODLX_ASSERT(!"Bad type"); /** @todo figure out TYPEINFO. */
+            return KLDR_ERR_LX_BAD_BUNDLE;
+        }
+        if (pBundle->b32_type == 0)
+            pBundle = (const struct b32_bundle *)((const KU8 *)pBundle + 2);
+        else
+            pBundle = (const struct b32_bundle *)((const KU8 *)(pBundle + 1) + s_cbEntry[pBundle->b32_type] * pBundle->b32_cnt);
+    }
+
+    return KLDR_ERR_SYMBOL_NOT_FOUND;
+}
+
+
+/**
+ * Do name lookup.
+ *
+ * @returns See kLdrModQuerySymbol.
+ * @param   pModLX      The module to lookup the symbol in.
+ * @param   pchSymbol   The symbol to lookup.
+ * @param   cchSymbol   The symbol name length.
+ * @param   piSymbol    Where to store the symbol ordinal.
+ */
+static int kldrModLXDoNameLookup(PKLDRMODLX pModLX, const char *pchSymbol, KSIZE cchSymbol, KU32 *piSymbol)
+{
+
+    /*
+     * First do a hash table lookup.
+     */
+    /** @todo hash name table for speed. */
+
+    /*
+     * Search the name tables.
+     */
+    const KU8 *pbName = kldrModLXDoNameTableLookupByName(pModLX->pbResNameTab,
+                                                         pModLX->pbLoaderSectionLast - pModLX->pbResNameTab + 1,
+                                                         pchSymbol, cchSymbol);
+    if (!pbName)
+    {
+        if (!pModLX->pbNonResNameTab)
+        {
+            /* lazy load it */
+            /** @todo non-resident name table. */
+        }
+        if (pModLX->pbNonResNameTab)
+            pbName = kldrModLXDoNameTableLookupByName(pModLX->pbResNameTab,
+                                                      pModLX->pbNonResNameTabLast - pModLX->pbResNameTab + 1,
+                                                      pchSymbol, cchSymbol);
+    }
+    if (!pbName)
+        return KLDR_ERR_SYMBOL_NOT_FOUND;
+
+    *piSymbol = *(const KU16 *)(pbName + 1 + *pbName);
+    return 0;
+}
+
+
+#if 0
+/**
+ * Hash a symbol using the algorithm from sdbm.
+ *
+ * The following was is the documenation of the orignal sdbm functions:
+ *
+ * This algorithm was created for sdbm (a public-domain reimplementation of
+ * ndbm) database library. it was found to do well in scrambling bits,
+ * causing better distribution of the keys and fewer splits. it also happens
+ * to be a good general hashing function with good distribution. the actual
+ * function is hash(i) = hash(i - 1) * 65599 + str[i]; what is included below
+ * is the faster version used in gawk. [there is even a faster, duff-device
+ * version] the magic constant 65599 was picked out of thin air while
+ * experimenting with different constants, and turns out to be a prime.
+ * this is one of the algorithms used in berkeley db (see sleepycat) and
+ * elsewhere.
+ */
+static KU32 kldrModLXDoHash(const char *pchSymbol, KU8 cchSymbol)
+{
+    KU32 hash = 0;
+    int ch;
+
+    while (     cchSymbol-- > 0
+           &&   (ch = *(unsigned const char *)pchSymbol++))
+        hash = ch + (hash << 6) + (hash << 16) - hash;
+
+    return hash;
+}
+#endif
+
+
+/**
+ * Lookup a name table entry by name.
+ *
+ * @returns Pointer to the name table entry if found.
+ * @returns NULL if not found.
+ * @param   pbNameTable     Pointer to the name table that should be searched.
+ * @param   cbNameTable     The size of the name table.
+ * @param   pchSymbol       The name of the symbol we're looking for.
+ * @param   cchSymbol       The length of the symbol name.
+ */
+static const KU8 *kldrModLXDoNameTableLookupByName(const KU8 *pbNameTable, KSSIZE cbNameTable,
+                                                   const char *pchSymbol, KSIZE cchSymbol)
+{
+    /*
+     * Determin the namelength up front so we can skip anything which doesn't matches the length.
+     */
+    KU8 cbSymbol8Bit = (KU8)cchSymbol;
+    if (cbSymbol8Bit != cchSymbol)
+        return NULL; /* too long. */
+
+    /*
+     * Walk the name table.
+     */
+    while (*pbNameTable != 0 && cbNameTable > 0)
+    {
+        const KU8 cbName = *pbNameTable;
+
+        cbNameTable -= cbName + 1 + 2;
+        if (cbNameTable < 0)
+            break;
+
+        if (    cbName == cbSymbol8Bit
+            &&  !kHlpMemComp(pbNameTable + 1, pchSymbol, cbName))
+            return pbNameTable;
+
+        /* next entry */
+        pbNameTable += cbName + 1 + 2;
+    }
+
+    return NULL;
+}
+
+
+/**
+ * Deal with a forwarder entry.
+ *
+ * @returns See kLdrModQuerySymbol.
+ * @param   pModLX          The PE module interpreter instance.
+ * @param   pEntry          The forwarder entry.
+ * @param   pfnGetForwarder The callback for resolving forwarder symbols. (optional)
+ * @param   pvUser          The user argument for the callback.
+ * @param   puValue         Where to put the value. (optional)
+ * @param   pfKind          Where to put the symbol kind. (optional)
+ */
+static int kldrModLXDoForwarderQuery(PKLDRMODLX pModLX, const struct e32_entry *pEntry,
+                                     PFNKLDRMODGETIMPORT pfnGetForwarder, void *pvUser, PKLDRADDR puValue, KU32 *pfKind)
+{
+    int rc;
+    KU32 iSymbol;
+    const char *pchSymbol;
+    KU8 cchSymbol;
+
+    if (!pfnGetForwarder)
+        return KLDR_ERR_FORWARDER_SYMBOL;
+
+    /*
+     * Validate the entry import module ordinal.
+     */
+    if (    !pEntry->e32_variant.e32_fwd.modord
+        ||  pEntry->e32_variant.e32_fwd.modord > pModLX->Hdr.e32_impmodcnt)
+        return KLDR_ERR_LX_BAD_FORWARDER;
+
+    /*
+     * Figure out the parameters.
+     */
+    if (pEntry->e32_flags & FWD_ORDINAL)
+    {
+        iSymbol = pEntry->e32_variant.e32_fwd.value;
+        pchSymbol = NULL;                   /* no symbol name. */
+        cchSymbol = 0;
+    }
+    else
+    {
+        const KU8 *pbName;
+
+        /* load the fixup section if necessary. */
+        if (!pModLX->pbImportProcs)
+        {
+            rc = kldrModLXDoLoadFixupSection(pModLX);
+            if (rc)
+                return rc;
+        }
+
+        /* Make name pointer. */
+        pbName = pModLX->pbImportProcs + pEntry->e32_variant.e32_fwd.value;
+        if (    pbName >= pModLX->pbFixupSectionLast
+            ||  pbName < pModLX->pbFixupSection
+            || !*pbName)
+            return KLDR_ERR_LX_BAD_FORWARDER;
+
+
+        /* check for '#' name. */
+        if (pbName[1] == '#')
+        {
+            KU8         cbLeft = *pbName;
+            const KU8  *pb = pbName + 1;
+            unsigned    uBase;
+
+            /* base detection */
+            uBase = 10;
+            if (    cbLeft > 1
+                &&  pb[1] == '0'
+                &&  (pb[2] == 'x' || pb[2] == 'X'))
+            {
+                uBase = 16;
+                pb += 2;
+                cbLeft -= 2;
+            }
+
+            /* ascii to integer */
+            iSymbol = 0;
+            while (cbLeft-- > 0)
+            {
+                /* convert char to digit. */
+                unsigned uDigit = *pb++;
+                if (uDigit >= '0' && uDigit <= '9')
+                    uDigit -= '0';
+                else if (uDigit >= 'a' && uDigit <= 'z')
+                    uDigit -= 'a' + 10;
+                else if (uDigit >= 'A' && uDigit <= 'Z')
+                    uDigit -= 'A' + 10;
+                else if (!uDigit)
+                    break;
+                else
+                    return KLDR_ERR_LX_BAD_FORWARDER;
+                if (uDigit >= uBase)
+                    return KLDR_ERR_LX_BAD_FORWARDER;
+
+                /* insert the digit */
+                iSymbol *= uBase;
+                iSymbol += uDigit;
+            }
+            if (!iSymbol)
+                return KLDR_ERR_LX_BAD_FORWARDER;
+
+            pchSymbol = NULL;               /* no symbol name. */
+            cchSymbol = 0;
+        }
+        else
+        {
+            pchSymbol = (char *)pbName + 1;
+            cchSymbol = *pbName;
+            iSymbol = NIL_KLDRMOD_SYM_ORDINAL;
+        }
+    }
+
+    /*
+     * Resolve the forwarder.
+     */
+    rc = pfnGetForwarder(pModLX->pMod, pEntry->e32_variant.e32_fwd.modord - 1, iSymbol, pchSymbol, cchSymbol, NULL, puValue, pfKind, pvUser);
+    if (!rc && pfKind)
+        *pfKind |= KLDRSYMKIND_FORWARDER;
+    return rc;
+}
+
+
+/**
+ * Loads the fixup section from the executable image.
+ *
+ * The fixup section isn't loaded until it's accessed. It's also freed by kLdrModDone().
+ *
+ * @returns 0 on success, non-zero kLdr or native status code on failure.
+ * @param   pModLX          The PE module interpreter instance.
+ */
+static int kldrModLXDoLoadFixupSection(PKLDRMODLX pModLX)
+{
+    int rc;
+    KU32 off;
+    void *pv;
+
+    pv = kHlpAlloc(pModLX->Hdr.e32_fixupsize);
+    if (!pv)
+        return KERR_NO_MEMORY;
+
+    off = pModLX->Hdr.e32_objtab + pModLX->Hdr.e32_ldrsize;
+    rc = kRdrRead(pModLX->pMod->pRdr, pv, pModLX->Hdr.e32_fixupsize,
+                     off + pModLX->offHdr);
+    if (!rc)
+    {
+        pModLX->pbFixupSection = pv;
+        pModLX->pbFixupSectionLast = pModLX->pbFixupSection + pModLX->Hdr.e32_fixupsize;
+        KLDRMODLX_ASSERT(!pModLX->paoffPageFixups);
+        if (pModLX->Hdr.e32_fpagetab)
+            pModLX->paoffPageFixups = (const KU32 *)(pModLX->pbFixupSection + pModLX->Hdr.e32_fpagetab - off);
+        KLDRMODLX_ASSERT(!pModLX->pbFixupRecs);
+        if (pModLX->Hdr.e32_frectab)
+            pModLX->pbFixupRecs = pModLX->pbFixupSection + pModLX->Hdr.e32_frectab - off;
+        KLDRMODLX_ASSERT(!pModLX->pbImportMods);
+        if (pModLX->Hdr.e32_impmod)
+            pModLX->pbImportMods = pModLX->pbFixupSection + pModLX->Hdr.e32_impmod - off;
+        KLDRMODLX_ASSERT(!pModLX->pbImportProcs);
+        if (pModLX->Hdr.e32_impproc)
+            pModLX->pbImportProcs = pModLX->pbFixupSection + pModLX->Hdr.e32_impproc - off;
+    }
+    else
+        kHlpFree(pv);
+    return rc;
+}
+
+
+/** @copydoc kLdrModEnumSymbols */
+static int kldrModLXEnumSymbols(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress,
+                                KU32 fFlags, PFNKLDRMODENUMSYMS pfnCallback, void *pvUser)
+{
+    PKLDRMODLX pModLX = (PKLDRMODLX)pMod->pvData;
+    const struct b32_bundle *pBundle;
+    KU32 iOrdinal;
+    int rc = 0;
+    K_NOREF(pvBits);
+    K_NOREF(fFlags);
+
+    kldrModLXResolveBaseAddress(pModLX, &BaseAddress);
+
+    /*
+     * Enumerate the entry table.
+     * (The entry table is made up of bundles of similar exports.)
+     */
+    iOrdinal = 1;
+    pBundle = (const struct b32_bundle *)pModLX->pbEntryTab;
+    while (pBundle->b32_cnt && iOrdinal)
+    {
+        static const KSIZE s_cbEntry[] = { 0, 3, 5, 5, 7 };
+
+        /*
+         * Enum the entries in the bundle.
+         */
+        if (pBundle->b32_type != EMPTY)
+        {
+            const struct e32_entry *pEntry;
+            KSIZE cbEntry;
+            KLDRADDR BundleRVA;
+            unsigned cLeft;
+
+
+            /* Validate the bundle. */
+            switch (pBundle->b32_type)
+            {
+                case ENTRY16:
+                case GATE16:
+                case ENTRY32:
+                    if (    pBundle->b32_obj <= 0
+                        ||  pBundle->b32_obj > pMod->cSegments)
+                        return KLDR_ERR_LX_BAD_BUNDLE;
+                    BundleRVA = pMod->aSegments[pBundle->b32_obj - 1].RVA;
+                    break;
+
+                case ENTRYFWD:
+                    BundleRVA = 0;
+                    break;
+
+                default:
+                    /* anyone actually using TYPEINFO will end up here. */
+                    KLDRMODLX_ASSERT(!"Bad bundle type");
+                    return KLDR_ERR_LX_BAD_BUNDLE;
+            }
+
+            /* iterate the bundle entries. */
+            cbEntry = s_cbEntry[pBundle->b32_type];
+            pEntry = (const struct e32_entry *)(pBundle + 1);
+            cLeft = pBundle->b32_cnt;
+            while (cLeft-- > 0)
+            {
+                KLDRADDR uValue;
+                KU32 fKind;
+                int fFoundName;
+                const KU8 *pbName;
+
+                /*
+                 * Calc the symbol value and kind.
+                 */
+                switch (pBundle->b32_type)
+                {
+                    /* e32_flags + a 16-bit offset. */
+                    case ENTRY16:
+                        uValue = BaseAddress + BundleRVA + pEntry->e32_variant.e32_offset.offset16;
+                        fKind = KLDRSYMKIND_16BIT | KLDRSYMKIND_NO_TYPE;
+                        break;
+
+                    /* e32_flags + a 16-bit offset + a 16-bit callgate selector. */
+                    case GATE16:
+                        uValue = BaseAddress + BundleRVA + pEntry->e32_variant.e32_callgate.offset;
+                        fKind = KLDRSYMKIND_16BIT | KLDRSYMKIND_CODE;
+                        break;
+
+                    /* e32_flags + a 32-bit offset. */
+                    case ENTRY32:
+                        uValue = BaseAddress + BundleRVA + pEntry->e32_variant.e32_offset.offset32;
+                        fKind = KLDRSYMKIND_32BIT;
+                        break;
+
+                    /* e32_flags + 16-bit import module ordinal + a 32-bit procname or ordinal. */
+                    case ENTRYFWD:
+                        uValue = 0; /** @todo implement enumeration of forwarders properly. */
+                        fKind = KLDRSYMKIND_FORWARDER;
+                        break;
+
+                    default: /* shut up gcc. */
+                        uValue = 0;
+                        fKind = KLDRSYMKIND_NO_BIT | KLDRSYMKIND_NO_TYPE;
+                        break;
+                }
+
+                /*
+                 * Any symbol names?
+                 */
+                fFoundName = 0;
+
+                /* resident name table. */
+                pbName = pModLX->pbResNameTab;
+                if (pbName)
+                {
+                    do
+                    {
+                        pbName = kldrModLXDoNameTableLookupByOrdinal(pbName, pModLX->pbLoaderSectionLast - pbName + 1, iOrdinal);
+                        if (!pbName)
+                            break;
+                        fFoundName = 1;
+                        rc = pfnCallback(pMod, iOrdinal, (const char *)pbName + 1, *pbName, NULL, uValue, fKind, pvUser);
+                        if (rc)
+                            return rc;
+
+                        /* skip to the next entry */
+                        pbName += 1 + *pbName + 2;
+                    } while (pbName < pModLX->pbLoaderSectionLast);
+                }
+
+                /* resident name table. */
+                pbName = pModLX->pbNonResNameTab;
+                /** @todo lazy load the non-resident name table. */
+                if (pbName)
+                {
+                    do
+                    {
+                        pbName = kldrModLXDoNameTableLookupByOrdinal(pbName, pModLX->pbNonResNameTabLast - pbName + 1, iOrdinal);
+                        if (!pbName)
+                            break;
+                        fFoundName = 1;
+                        rc = pfnCallback(pMod, iOrdinal, (const char *)pbName + 1, *pbName, NULL, uValue, fKind, pvUser);
+                        if (rc)
+                            return rc;
+
+                        /* skip to the next entry */
+                        pbName += 1 + *pbName + 2;
+                    } while (pbName < pModLX->pbLoaderSectionLast);
+                }
+
+                /*
+                 * If no names, call once with the ordinal only.
+                 */
+                if (!fFoundName)
+                {
+                    rc = pfnCallback(pMod, iOrdinal, NULL, 0, NULL, uValue, fKind, pvUser);
+                    if (rc)
+                        return rc;
+                }
+
+                /* next */
+                iOrdinal++;
+                pEntry = (const struct e32_entry *)((KUPTR)pEntry + cbEntry);
+            }
+        }
+
+        /*
+         * The next bundle.
+         */
+        if (pBundle->b32_type > ENTRYFWD)
+        {
+            KLDRMODLX_ASSERT(!"Bad type"); /** @todo figure out TYPEINFO. */
+            return KLDR_ERR_LX_BAD_BUNDLE;
+        }
+        if (pBundle->b32_type == 0)
+            pBundle = (const struct b32_bundle *)((const KU8 *)pBundle + 2);
+        else
+            pBundle = (const struct b32_bundle *)((const KU8 *)(pBundle + 1) + s_cbEntry[pBundle->b32_type] * pBundle->b32_cnt);
+    }
+
+    return 0;
+}
+
+
+/**
+ * Lookup a name table entry by ordinal.
+ *
+ * @returns Pointer to the name table entry if found.
+ * @returns NULL if not found.
+ * @param   pbNameTable Pointer to the name table that should be searched.
+ * @param   cbNameTable The size of the name table.
+ * @param   iOrdinal    The ordinal to search for.
+ */
+static const KU8 *kldrModLXDoNameTableLookupByOrdinal(const KU8 *pbNameTable, KSSIZE cbNameTable, KU32 iOrdinal)
+{
+    while (*pbNameTable != 0 && cbNameTable > 0)
+    {
+        const KU8   cbName = *pbNameTable;
+        KU32        iName;
+
+        cbNameTable -= cbName + 1 + 2;
+        if (cbNameTable < 0)
+            break;
+
+        iName = *(pbNameTable + cbName + 1)
+              | ((unsigned)*(pbNameTable + cbName + 2) << 8);
+        if (iName == iOrdinal)
+            return pbNameTable;
+
+        /* next entry */
+        pbNameTable += cbName + 1 + 2;
+    }
+
+    return NULL;
+}
+
+
+/** @copydoc kLdrModGetImport */
+static int kldrModLXGetImport(PKLDRMOD pMod, const void *pvBits, KU32 iImport, char *pszName, KSIZE cchName)
+{
+    PKLDRMODLX  pModLX = (PKLDRMODLX)pMod->pvData;
+    const KU8  *pb;
+    int         rc;
+    K_NOREF(pvBits);
+
+    /*
+     * Validate
+     */
+    if (iImport >= pModLX->Hdr.e32_impmodcnt)
+        return KLDR_ERR_IMPORT_ORDINAL_OUT_OF_BOUNDS;
+
+    /*
+     * Lazy loading the fixup section.
+     */
+    if (!pModLX->pbImportMods)
+    {
+        rc = kldrModLXDoLoadFixupSection(pModLX);
+        if (rc)
+            return rc;
+    }
+
+    /*
+     * Iterate the module import table until we reach the requested import ordinal.
+     */
+    pb = pModLX->pbImportMods;
+    while (iImport-- > 0)
+        pb += *pb + 1;
+
+    /*
+     * Copy out the result.
+     */
+    if (*pb < cchName)
+    {
+        kHlpMemCopy(pszName, pb + 1, *pb);
+        pszName[*pb] = '\0';
+        rc = 0;
+    }
+    else
+    {
+        kHlpMemCopy(pszName, pb + 1, cchName);
+        if (cchName)
+            pszName[cchName - 1] = '\0';
+        rc = KERR_BUFFER_OVERFLOW;
+    }
+
+    return rc;
+}
+
+
+/** @copydoc kLdrModNumberOfImports */
+static KI32 kldrModLXNumberOfImports(PKLDRMOD pMod, const void *pvBits)
+{
+    PKLDRMODLX pModLX = (PKLDRMODLX)pMod->pvData;
+    K_NOREF(pvBits);
+    return pModLX->Hdr.e32_impmodcnt;
+}
+
+
+/** @copydoc kLdrModGetStackInfo */
+static int kldrModLXGetStackInfo(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRSTACKINFO pStackInfo)
+{
+    PKLDRMODLX pModLX = (PKLDRMODLX)pMod->pvData;
+    const KU32 i = pModLX->Hdr.e32_stackobj;
+    K_NOREF(pvBits);
+
+    if (    i
+        &&  i <= pMod->cSegments
+        &&  pModLX->Hdr.e32_esp <= pMod->aSegments[i - 1].LinkAddress + pMod->aSegments[i - 1].cb
+        &&  pModLX->Hdr.e32_stacksize
+        &&  pModLX->Hdr.e32_esp - pModLX->Hdr.e32_stacksize >= pMod->aSegments[i - 1].LinkAddress)
+    {
+
+        kldrModLXResolveBaseAddress(pModLX, &BaseAddress);
+        pStackInfo->LinkAddress = pModLX->Hdr.e32_esp - pModLX->Hdr.e32_stacksize;
+        pStackInfo->Address = BaseAddress
+                            + pMod->aSegments[i - 1].RVA
+                            + pModLX->Hdr.e32_esp - pModLX->Hdr.e32_stacksize - pMod->aSegments[i - 1].LinkAddress;
+    }
+    else
+    {
+        pStackInfo->Address = NIL_KLDRADDR;
+        pStackInfo->LinkAddress = NIL_KLDRADDR;
+    }
+    pStackInfo->cbStack = pModLX->Hdr.e32_stacksize;
+    pStackInfo->cbStackThread = 0;
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModQueryMainEntrypoint */
+static int kldrModLXQueryMainEntrypoint(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRADDR pMainEPAddress)
+{
+    PKLDRMODLX pModLX = (PKLDRMODLX)pMod->pvData;
+    K_NOREF(pvBits);
+
+    /*
+     * Convert the address from the header.
+     */
+    kldrModLXResolveBaseAddress(pModLX, &BaseAddress);
+    *pMainEPAddress = pModLX->Hdr.e32_startobj
+                   && pModLX->Hdr.e32_startobj <= pMod->cSegments
+                   && pModLX->Hdr.e32_eip < pMod->aSegments[pModLX->Hdr.e32_startobj - 1].cb
+        ? BaseAddress + pMod->aSegments[pModLX->Hdr.e32_startobj - 1].RVA + pModLX->Hdr.e32_eip
+        : NIL_KLDRADDR;
+    return 0;
+}
+
+
+/** @copydoc kLdrModEnumDbgInfo */
+static int kldrModLXEnumDbgInfo(PKLDRMOD pMod, const void *pvBits, PFNKLDRENUMDBG pfnCallback, void *pvUser)
+{
+    /*PKLDRMODLX pModLX = (PKLDRMODLX)pMod->pvData;*/
+    K_NOREF(pfnCallback);
+    K_NOREF(pvUser);
+
+    /*
+     * Quit immediately if no debug info.
+     */
+    if (kldrModLXHasDbgInfo(pMod, pvBits))
+        return 0;
+#if 0
+    /*
+     * Read the debug info and look for familiar magics and structures.
+     */
+    /** @todo */
+#endif
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModHasDbgInfo */
+static int kldrModLXHasDbgInfo(PKLDRMOD pMod, const void *pvBits)
+{
+    PKLDRMODLX pModLX = (PKLDRMODLX)pMod->pvData;
+    K_NOREF(pvBits);
+
+    /*
+     * Don't curretnly bother with linkers which doesn't advertise it in the header.
+     */
+    if (    !pModLX->Hdr.e32_debuginfo
+        ||  !pModLX->Hdr.e32_debuglen)
+        return KLDR_ERR_NO_DEBUG_INFO;
+    return 0;
+}
+
+
+/** @copydoc kLdrModMap */
+static int kldrModLXMap(PKLDRMOD pMod)
+{
+    PKLDRMODLX  pModLX = (PKLDRMODLX)pMod->pvData;
+    unsigned    fFixed;
+    void       *pvBase;
+    int         rc;
+
+    /*
+     * Already mapped?
+     */
+    if (pModLX->pvMapping)
+        return KLDR_ERR_ALREADY_MAPPED;
+
+    /*
+     * Allocate memory for it.
+     */
+    /* fixed image? */
+    fFixed = pMod->enmType == KLDRTYPE_EXECUTABLE_FIXED
+          || pMod->enmType == KLDRTYPE_SHARED_LIBRARY_FIXED;
+    if (!fFixed)
+        pvBase = NULL;
+    else
+    {
+        pvBase = (void *)(KUPTR)pMod->aSegments[0].LinkAddress;
+        if ((KUPTR)pvBase != pMod->aSegments[0].LinkAddress)
+            return KLDR_ERR_ADDRESS_OVERFLOW;
+    }
+    rc = kHlpPageAlloc(&pvBase, pModLX->cbMapped, KPROT_EXECUTE_READWRITE, fFixed);
+    if (rc)
+        return rc;
+
+    /*
+     * Load the bits, apply page protection, and update the segment table.
+     */
+    rc = kldrModLXDoLoadBits(pModLX, pvBase);
+    if (!rc)
+        rc = kldrModLXDoProtect(pModLX, pvBase, 0 /* protect */);
+    if (!rc)
+    {
+        KU32 i;
+        for (i = 0; i < pMod->cSegments; i++)
+        {
+            if (pMod->aSegments[i].RVA != NIL_KLDRADDR)
+                pMod->aSegments[i].MapAddress = (KUPTR)pvBase + (KUPTR)pMod->aSegments[i].RVA;
+        }
+        pModLX->pvMapping = pvBase;
+    }
+    else
+        kHlpPageFree(pvBase, pModLX->cbMapped);
+    return rc;
+}
+
+
+/**
+ * Loads the LX pages into the specified memory mapping.
+ *
+ * @returns 0 on success.
+ * @returns non-zero kLdr or OS status code on failure.
+ *
+ * @param   pModLX  The LX module interpreter instance.
+ * @param   pvBits  Where to load the bits.
+ */
+static int kldrModLXDoLoadBits(PKLDRMODLX pModLX, void *pvBits)
+{
+    const PKRDR pRdr = pModLX->pMod->pRdr;
+    KU8 *pbTmpPage = NULL;
+    int rc = 0;
+    KU32 i;
+
+    /*
+     * Iterate the segments.
+     */
+    for (i = 0; i < pModLX->Hdr.e32_objcnt; i++)
+    {
+        const struct o32_obj * const pObj = &pModLX->paObjs[i];
+        const KU32      cPages = (KU32)(pModLX->pMod->aSegments[i].cbMapped / OBJPAGELEN);
+        KU32            iPage;
+        KU8            *pbPage = (KU8 *)pvBits + (KUPTR)pModLX->pMod->aSegments[i].RVA;
+
+        /*
+         * Iterate the page map pages.
+         */
+        for (iPage = 0; !rc && iPage < pObj->o32_mapsize; iPage++, pbPage += OBJPAGELEN)
+        {
+            const struct o32_map *pMap = &pModLX->paPageMappings[iPage + pObj->o32_pagemap - 1];
+            switch (pMap->o32_pageflags)
+            {
+                case VALID:
+                    if (pMap->o32_pagesize == OBJPAGELEN)
+                        rc = kRdrRead(pRdr, pbPage, OBJPAGELEN,
+                                         pModLX->Hdr.e32_datapage + (pMap->o32_pagedataoffset << pModLX->Hdr.e32_pageshift));
+                    else if (pMap->o32_pagesize < OBJPAGELEN)
+                    {
+                        rc = kRdrRead(pRdr, pbPage, pMap->o32_pagesize,
+                                         pModLX->Hdr.e32_datapage + (pMap->o32_pagedataoffset << pModLX->Hdr.e32_pageshift));
+                        kHlpMemSet(pbPage + pMap->o32_pagesize, 0, OBJPAGELEN - pMap->o32_pagesize);
+                    }
+                    else
+                        rc = KLDR_ERR_LX_BAD_PAGE_MAP;
+                    break;
+
+                case ITERDATA:
+                case ITERDATA2:
+                    /* make sure we've got a temp page .*/
+                    if (!pbTmpPage)
+                    {
+                        pbTmpPage = kHlpAlloc(OBJPAGELEN + 256);
+                        if (!pbTmpPage)
+                            break;
+                    }
+                    /* validate the size. */
+                    if (pMap->o32_pagesize > OBJPAGELEN + 252)
+                    {
+                        rc = KLDR_ERR_LX_BAD_PAGE_MAP;
+                        break;
+                    }
+
+                    /* read it and ensure 4 extra zero bytes. */
+                    rc = kRdrRead(pRdr, pbTmpPage, pMap->o32_pagesize,
+                                     pModLX->Hdr.e32_datapage + (pMap->o32_pagedataoffset << pModLX->Hdr.e32_pageshift));
+                    if (rc)
+                        break;
+                    kHlpMemSet(pbTmpPage + pMap->o32_pagesize, 0, 4);
+
+                    /* unpack it into the image page. */
+                    if (pMap->o32_pageflags == ITERDATA2)
+                        rc = kldrModLXDoIterData2Unpacking(pbPage, pbTmpPage, pMap->o32_pagesize);
+                    else
+                        rc = kldrModLXDoIterDataUnpacking(pbPage, pbTmpPage, pMap->o32_pagesize);
+                    break;
+
+                case INVALID: /* we're probably not dealing correctly with INVALID pages... */
+                case ZEROED:
+                    kHlpMemSet(pbPage, 0, OBJPAGELEN);
+                    break;
+
+                case RANGE:
+                    KLDRMODLX_ASSERT(!"RANGE");
+                    /* Falls through. */
+                default:
+                    rc = KLDR_ERR_LX_BAD_PAGE_MAP;
+                    break;
+            }
+        }
+        if (rc)
+            break;
+
+        /*
+         * Zero the remaining pages.
+         */
+        if (iPage < cPages)
+            kHlpMemSet(pbPage, 0, (cPages - iPage) * OBJPAGELEN);
+    }
+
+    if (pbTmpPage)
+        kHlpFree(pbTmpPage);
+    return rc;
+}
+
+
+/**
+ * Unpacks iterdata (aka EXEPACK).
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pbDst       Where to put the uncompressed data. (Assumes OBJPAGELEN size.)
+ * @param   pbSrc       The compressed source data.
+ * @param   cbSrc       The file size of the compressed data. The source buffer
+ *                      contains 4 additional zero bytes.
+ */
+static int kldrModLXDoIterDataUnpacking(KU8 *pbDst, const KU8 *pbSrc, int cbSrc)
+{
+    const struct LX_Iter   *pIter = (const struct LX_Iter *)pbSrc;
+    int                     cbDst = OBJPAGELEN;
+
+    /* Validate size of data. */
+    if (cbSrc >= (int)OBJPAGELEN - 2)
+        return KLDR_ERR_LX_BAD_ITERDATA;
+
+    /*
+     * Expand the page.
+     */
+    while (cbSrc > 0 && pIter->LX_nIter)
+    {
+        if (pIter->LX_nBytes == 1)
+        {
+            /*
+             * Special case - one databyte.
+             */
+            cbDst -= pIter->LX_nIter;
+            if (cbDst < 0)
+                return KLDR_ERR_LX_BAD_ITERDATA;
+
+            cbSrc -= 4 + 1;
+            if (cbSrc < -4)
+                return KLDR_ERR_LX_BAD_ITERDATA;
+
+            kHlpMemSet(pbDst, pIter->LX_Iterdata, pIter->LX_nIter);
+            pbDst += pIter->LX_nIter;
+            pIter++;
+        }
+        else
+        {
+            /*
+             * General.
+             */
+            int i;
+
+            cbDst -= pIter->LX_nIter * pIter->LX_nBytes;
+            if (cbDst < 0)
+                return KLDR_ERR_LX_BAD_ITERDATA;
+
+            cbSrc -= 4 + pIter->LX_nBytes;
+            if (cbSrc < -4)
+                return KLDR_ERR_LX_BAD_ITERDATA;
+
+            for (i = pIter->LX_nIter; i > 0; i--, pbDst += pIter->LX_nBytes)
+                kHlpMemCopy(pbDst, &pIter->LX_Iterdata, pIter->LX_nBytes);
+            pIter   = (struct LX_Iter *)((char*)pIter + 4 + pIter->LX_nBytes);
+        }
+    }
+
+    /*
+     * Zero remainder of the page.
+     */
+    if (cbDst > 0)
+        kHlpMemSet(pbDst, 0, cbDst);
+
+    return 0;
+}
+
+
+/**
+ * Unpacks iterdata (aka EXEPACK).
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pbDst       Where to put the uncompressed data. (Assumes OBJPAGELEN size.)
+ * @param   pbSrc       The compressed source data.
+ * @param   cbSrc       The file size of the compressed data. The source buffer
+ *                      contains 4 additional zero bytes.
+ */
+static int kldrModLXDoIterData2Unpacking(KU8 *pbDst, const KU8 *pbSrc, int cbSrc)
+{
+    int cbDst = OBJPAGELEN;
+
+    while (cbSrc > 0)
+    {
+        /*
+         * Bit 0 and 1 is the encoding type.
+         */
+        switch (*pbSrc & 0x03)
+        {
+            /*
+             *
+             *  0  1  2  3  4  5  6  7
+             *  type  |              |
+             *        ----------------
+             *             cb         <cb bytes of data>
+             *
+             * Bits 2-7 is, if not zero, the length of an uncompressed run
+             * starting at the following byte.
+             *
+             *  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
+             *  type  |              |  |                    | |                     |
+             *        ----------------  ---------------------- -----------------------
+             *             zero                 cb                 char to multiply
+             *
+             * If the bits are zero, the following two bytes describes a 1 byte interation
+             * run. First byte is count, second is the byte to copy. A count of zero is
+             * means end of data, and we simply stops. In that case the rest of the data
+             * should be zero.
+             */
+            case 0:
+            {
+                if (*pbSrc)
+                {
+                    const int cb = *pbSrc >> 2;
+                    cbDst -= cb;
+                    if (cbDst < 0)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    cbSrc -= cb + 1;
+                    if (cbSrc < 0)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    kHlpMemCopy(pbDst, ++pbSrc, cb);
+                    pbDst += cb;
+                    pbSrc += cb;
+                }
+                else if (cbSrc < 2)
+                    return KLDR_ERR_LX_BAD_ITERDATA2;
+                else
+                {
+                    const int cb = pbSrc[1];
+                    if (!cb)
+                        goto l_endloop;
+                    cbDst -= cb;
+                    if (cbDst < 0)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    cbSrc -= 3;
+                    if (cbSrc < 0)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    kHlpMemSet(pbDst, pbSrc[2], cb);
+                    pbDst += cb;
+                    pbSrc += 3;
+                }
+                break;
+            }
+
+
+            /*
+             *  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
+             *  type  |  |  |     |  |                       |
+             *        ----  -------  -------------------------
+             *        cb1   cb2 - 3          offset            <cb1 bytes of data>
+             *
+             * Two bytes layed out as described above, followed by cb1 bytes of data to be copied.
+             * The cb2(+3) and offset describes an amount of data to be copied from the expanded
+             * data relative to the current position. The data copied as you would expect it to be.
+             */
+            case 1:
+            {
+                cbSrc -= 2;
+                if (cbSrc < 0)
+                    return KLDR_ERR_LX_BAD_ITERDATA2;
+                else
+                {
+                    const unsigned  off = ((unsigned)pbSrc[1] << 1) | (*pbSrc >> 7);
+                    const int       cb1 = (*pbSrc >> 2) & 3;
+                    const int       cb2 = ((*pbSrc >> 4) & 7) + 3;
+
+                    pbSrc += 2;
+                    cbSrc -= cb1;
+                    if (cbSrc < 0)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    cbDst -= cb1;
+                    if (cbDst < 0)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    kHlpMemCopy(pbDst, pbSrc, cb1);
+                    pbDst += cb1;
+                    pbSrc += cb1;
+
+                    if (off > OBJPAGELEN - (unsigned)cbDst)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    cbDst -= cb2;
+                    if (cbDst < 0)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    kHlpMemMove(pbDst, pbDst - off, cb2);
+                    pbDst += cb2;
+                }
+                break;
+            }
+
+
+            /*
+             *  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
+             *  type  |  |  |                                |
+             *        ----  ----------------------------------
+             *       cb-3               offset
+             *
+             * Two bytes layed out as described above.
+             * The cb(+3) and offset describes an amount of data to be copied from the expanded
+             * data relative to the current position.
+             *
+             * If offset == 1 the data is not copied as expected, but in the memcpyw manner.
+             */
+            case 2:
+            {
+                cbSrc -= 2;
+                if (cbSrc < 0)
+                    return KLDR_ERR_LX_BAD_ITERDATA2;
+                else
+                {
+                    const unsigned  off = ((unsigned)pbSrc[1] << 4) | (*pbSrc >> 4);
+                    const int       cb = ((*pbSrc >> 2) & 3) + 3;
+
+                    pbSrc += 2;
+                    if (off > OBJPAGELEN - (unsigned)cbDst)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    cbDst -= cb;
+                    if (cbDst < 0)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    kLdrModLXMemCopyW(pbDst, pbDst - off, cb);
+                    pbDst += cb;
+                }
+                break;
+            }
+
+
+            /*
+             *  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
+             *  type  |        |  |              |  |                                |
+             *        ----------  ----------------  ----------------------------------
+             *           cb1            cb2                      offset                <cb1 bytes of data>
+             *
+             * Three bytes layed out as described above, followed by cb1 bytes of data to be copied.
+             * The cb2 and offset describes an amount of data to be copied from the expanded
+             * data relative to the current position.
+             *
+             * If offset == 1 the data is not copied as expected, but in the memcpyw manner.
+             */
+            case 3:
+            {
+                cbSrc -= 3;
+                if (cbSrc < 0)
+                    return KLDR_ERR_LX_BAD_ITERDATA2;
+                else
+                {
+                    const int       cb1 = (*pbSrc >> 2) & 0xf;
+                    const int       cb2 = ((pbSrc[1] & 0xf) << 2) | (*pbSrc >> 6);
+                    const unsigned  off = ((unsigned)pbSrc[2] << 4) | (pbSrc[1] >> 4);
+
+                    pbSrc += 3;
+                    cbSrc -= cb1;
+                    if (cbSrc < 0)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    cbDst -= cb1;
+                    if (cbDst < 0)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    kHlpMemCopy(pbDst, pbSrc, cb1);
+                    pbDst += cb1;
+                    pbSrc += cb1;
+
+                    if (off > OBJPAGELEN - (unsigned)cbDst)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    cbDst -= cb2;
+                    if (cbDst < 0)
+                        return KLDR_ERR_LX_BAD_ITERDATA2;
+                    kLdrModLXMemCopyW(pbDst, pbDst - off, cb2);
+                    pbDst += cb2;
+                }
+                break;
+            }
+        } /* type switch. */
+    } /* unpack loop */
+
+l_endloop:
+
+
+    /*
+     * Zero remainder of the page.
+     */
+    if (cbDst > 0)
+        kHlpMemSet(pbDst, 0, cbDst);
+
+    return 0;
+}
+
+
+/**
+ * Special memcpy employed by the iterdata2 algorithm.
+ *
+ * Emulate a 16-bit memcpy (copying 16-bit at a time) and the effects this
+ * has if src is very close to the destination.
+ *
+ * @param   pbDst   Destination pointer.
+ * @param   pbSrc   Source pointer. Will always be <= pbDst.
+ * @param   cb      Amount of data to be copied.
+ * @remark  This assumes that unaligned word and dword access is fine.
+ */
+static void kLdrModLXMemCopyW(KU8 *pbDst, const KU8 *pbSrc, int cb)
+{
+    switch (pbDst - pbSrc)
+    {
+        case 0:
+        case 1:
+        case 2:
+        case 3:
+            /* 16-bit copy (unaligned) */
+            if (cb & 1)
+                *pbDst++ = *pbSrc++;
+            for (cb >>= 1; cb > 0; cb--, pbDst += 2, pbSrc += 2)
+                *(KU16 *)pbDst = *(const KU16 *)pbSrc;
+            break;
+
+        default:
+            /* 32-bit copy (unaligned) */
+            if (cb & 1)
+                *pbDst++ = *pbSrc++;
+            if (cb & 2)
+            {
+                *(KU16 *)pbDst = *(const KU16 *)pbSrc;
+                pbDst += 2;
+                pbSrc += 2;
+            }
+            for (cb >>= 2; cb > 0; cb--, pbDst += 4, pbSrc += 4)
+                *(KU32 *)pbDst = *(const KU32 *)pbSrc;
+            break;
+    }
+}
+
+
+/**
+ * Unprotects or protects the specified image mapping.
+ *
+ * @returns 0 on success.
+ * @returns non-zero kLdr or OS status code on failure.
+ *
+ * @param   pModLX  The LX module interpreter instance.
+ * @param   pvBits  The mapping to protect.
+ * @param   UnprotectOrProtect  If 1 unprotect (i.e. make all writable), otherwise
+ *          protect according to the object table.
+ */
+static int kldrModLXDoProtect(PKLDRMODLX pModLX, void *pvBits, unsigned fUnprotectOrProtect)
+{
+    KU32 i;
+    PKLDRMOD pMod = pModLX->pMod;
+
+    /*
+     * Change object protection.
+     */
+    for (i = 0; i < pMod->cSegments; i++)
+    {
+        int rc;
+        void *pv;
+        KPROT enmProt;
+
+        /* calc new protection. */
+        enmProt = pMod->aSegments[i].enmProt;
+        if (fUnprotectOrProtect)
+        {
+            switch (enmProt)
+            {
+                case KPROT_NOACCESS:
+                case KPROT_READONLY:
+                case KPROT_READWRITE:
+                case KPROT_WRITECOPY:
+                    enmProt = KPROT_READWRITE;
+                    break;
+                case KPROT_EXECUTE:
+                case KPROT_EXECUTE_READ:
+                case KPROT_EXECUTE_READWRITE:
+                case KPROT_EXECUTE_WRITECOPY:
+                    enmProt = KPROT_EXECUTE_READWRITE;
+                    break;
+                default:
+                    KLDRMODLX_ASSERT(!"bad enmProt");
+                    return -1;
+            }
+        }
+        else
+        {
+            /* copy on write -> normal write. */
+            if (enmProt == KPROT_EXECUTE_WRITECOPY)
+                enmProt = KPROT_EXECUTE_READWRITE;
+            else if (enmProt == KPROT_WRITECOPY)
+                enmProt = KPROT_READWRITE;
+        }
+
+
+        /* calc the address and set page protection. */
+        pv = (KU8 *)pvBits + pMod->aSegments[i].RVA;
+
+        rc = kHlpPageProtect(pv, pMod->aSegments[i].cbMapped, enmProt);
+        if (rc)
+            break;
+
+        /** @todo the gap page should be marked NOACCESS! */
+    }
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModUnmap */
+static int kldrModLXUnmap(PKLDRMOD pMod)
+{
+    PKLDRMODLX  pModLX = (PKLDRMODLX)pMod->pvData;
+    KU32        i;
+    int         rc;
+
+    /*
+     * Mapped?
+     */
+    if (!pModLX->pvMapping)
+        return KLDR_ERR_NOT_MAPPED;
+
+    /*
+     * Free the mapping and update the segments.
+     */
+    rc = kHlpPageFree((void *)pModLX->pvMapping, pModLX->cbMapped);
+    KLDRMODLX_ASSERT(!rc);
+    pModLX->pvMapping = NULL;
+
+    for (i = 0; i < pMod->cSegments; i++)
+        pMod->aSegments[i].MapAddress = 0;
+
+    return rc;
+}
+
+
+/** @copydoc kLdrModAllocTLS */
+static int kldrModLXAllocTLS(PKLDRMOD pMod, void *pvMapping)
+{
+    PKLDRMODLX  pModLX = (PKLDRMODLX)pMod->pvData;
+
+    /* no tls, just do the error checking. */
+    if (   pvMapping == KLDRMOD_INT_MAP
+        && pModLX->pvMapping)
+        return KLDR_ERR_NOT_MAPPED;
+    return 0;
+}
+
+
+/** @copydoc kLdrModFreeTLS */
+static void kldrModLXFreeTLS(PKLDRMOD pMod, void *pvMapping)
+{
+    /* no tls. */
+    K_NOREF(pMod);
+    K_NOREF(pvMapping);
+
+}
+
+
+/** @copydoc kLdrModReload */
+static int kldrModLXReload(PKLDRMOD pMod)
+{
+    PKLDRMODLX pModLX = (PKLDRMODLX)pMod->pvData;
+    int rc, rc2;
+
+    /*
+     * Mapped?
+     */
+    if (!pModLX->pvMapping)
+        return KLDR_ERR_NOT_MAPPED;
+
+    /*
+     * Before doing anything we'll have to make all pages writable.
+     */
+    rc = kldrModLXDoProtect(pModLX, (void *)pModLX->pvMapping, 1 /* unprotect */);
+    if (rc)
+        return rc;
+
+    /*
+     * Load the bits again.
+     */
+    rc = kldrModLXDoLoadBits(pModLX, (void *)pModLX->pvMapping);
+
+    /*
+     * Restore protection.
+     */
+    rc2 = kldrModLXDoProtect(pModLX, (void *)pModLX->pvMapping, 0 /* protect */);
+    if (!rc && rc2)
+        rc = rc2;
+    return rc;
+}
+
+
+/** @copydoc kLdrModFixupMapping */
+static int kldrModLXFixupMapping(PKLDRMOD pMod, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    PKLDRMODLX pModLX = (PKLDRMODLX)pMod->pvData;
+    int rc, rc2;
+
+    /*
+     * Mapped?
+     */
+    if (!pModLX->pvMapping)
+        return KLDR_ERR_NOT_MAPPED;
+
+    /*
+     * Before doing anything we'll have to make all pages writable.
+     */
+    rc = kldrModLXDoProtect(pModLX, (void *)pModLX->pvMapping, 1 /* unprotect */);
+    if (rc)
+        return rc;
+
+    /*
+     * Apply fixups and resolve imports.
+     */
+    rc = kldrModLXRelocateBits(pMod, (void *)pModLX->pvMapping, (KUPTR)pModLX->pvMapping,
+                               pMod->aSegments[0].LinkAddress, pfnGetImport, pvUser);
+
+    /*
+     * Restore protection.
+     */
+    rc2 = kldrModLXDoProtect(pModLX, (void *)pModLX->pvMapping, 0 /* protect */);
+    if (!rc && rc2)
+        rc = rc2;
+    return rc;
+}
+
+
+/** @copydoc kLdrModCallInit */
+static int kldrModLXCallInit(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle)
+{
+    PKLDRMODLX pModLX = (PKLDRMODLX)pMod->pvData;
+    int rc;
+
+    /*
+     * Mapped?
+     */
+    if (pvMapping == KLDRMOD_INT_MAP)
+    {
+        pvMapping = (void *)pModLX->pvMapping;
+        if (!pvMapping)
+            return KLDR_ERR_NOT_MAPPED;
+    }
+
+    /*
+     * Do TLS callbacks first and then call the init/term function if it's a DLL.
+     */
+    if ((pModLX->Hdr.e32_mflags & E32MODMASK) == E32MODDLL)
+        rc = kldrModLXDoCallDLL(pModLX, pvMapping, 0 /* attach */, uHandle);
+    else
+        rc = 0;
+    return rc;
+}
+
+
+/**
+ * Call the DLL entrypoint.
+ *
+ * @returns 0 on success.
+ * @returns KLDR_ERR_MODULE_INIT_FAILED  or KLDR_ERR_THREAD_ATTACH_FAILED on failure.
+ * @param   pModLX          The LX module interpreter instance.
+ * @param   pvMapping       The module mapping to use (resolved).
+ * @param   uOp             The operation (DLL_*).
+ * @param   uHandle         The module handle to present.
+ */
+static int kldrModLXDoCallDLL(PKLDRMODLX pModLX, void *pvMapping, unsigned uOp, KUPTR uHandle)
+{
+    int rc;
+
+    /*
+     * If no entrypoint there isn't anything to be done.
+     */
+    if (    !pModLX->Hdr.e32_startobj
+        ||  pModLX->Hdr.e32_startobj > pModLX->Hdr.e32_objcnt)
+        return 0;
+
+    /*
+     * Invoke the entrypoint and convert the boolean result to a kLdr status code.
+     */
+    rc = kldrModLXDoCall((KUPTR)pvMapping
+                         + (KUPTR)pModLX->pMod->aSegments[pModLX->Hdr.e32_startobj - 1].RVA
+                         + pModLX->Hdr.e32_eip,
+                         uHandle, uOp, NULL);
+    if (rc)
+        rc = 0;
+    else if (uOp == 0 /* attach */)
+        rc = KLDR_ERR_MODULE_INIT_FAILED;
+    else /* detach: ignore failures */
+        rc = 0;
+    return rc;
+}
+
+
+/**
+ * Do a 3 parameter callback.
+ *
+ * @returns 32-bit callback return.
+ * @param   uEntrypoint     The address of the function to be called.
+ * @param   uHandle         The first argument, the module handle.
+ * @param   uOp             The second argumnet, the reason we're calling.
+ * @param   pvReserved      The third argument, reserved argument. (figure this one out)
+ */
+KI32 kldrModLXDoCall(KUPTR uEntrypoint, KUPTR uHandle, KU32 uOp, void *pvReserved)
+{
+#if defined(__X86__) || defined(__i386__) || defined(_M_IX86)
+    KI32 rc;
+/** @todo try/except */
+
+    /*
+     * Paranoia.
+     */
+# ifdef __GNUC__
+    __asm__ __volatile__(
+        "pushl  %2\n\t"
+        "pushl  %1\n\t"
+        "pushl  %0\n\t"
+        "lea   12(%%esp), %2\n\t"
+        "call  *%3\n\t"
+        "movl   %2, %%esp\n\t"
+        : "=a" (rc)
+        : "d" (uOp),
+          "S" (0),
+          "c" (uEntrypoint),
+          "0" (uHandle));
+# elif defined(_MSC_VER)
+    __asm {
+        mov     eax, [uHandle]
+        mov     edx, [uOp]
+        mov     ecx, 0
+        mov     ebx, [uEntrypoint]
+        push    edi
+        mov     edi, esp
+        push    ecx
+        push    edx
+        push    eax
+        call    ebx
+        mov     esp, edi
+        pop     edi
+        mov     [rc], eax
+    }
+# else
+#  error "port me!"
+# endif
+    K_NOREF(pvReserved);
+    return rc;
+
+#else
+    K_NOREF(uEntrypoint);
+    K_NOREF(uHandle);
+    K_NOREF(uOp);
+    K_NOREF(pvReserved);
+    return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
+#endif
+}
+
+
+/** @copydoc kLdrModCallTerm */
+static int kldrModLXCallTerm(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle)
+{
+    PKLDRMODLX  pModLX = (PKLDRMODLX)pMod->pvData;
+
+    /*
+     * Mapped?
+     */
+    if (pvMapping == KLDRMOD_INT_MAP)
+    {
+        pvMapping = (void *)pModLX->pvMapping;
+        if (!pvMapping)
+            return KLDR_ERR_NOT_MAPPED;
+    }
+
+    /*
+     * Do the call.
+     */
+    if ((pModLX->Hdr.e32_mflags & E32MODMASK) == E32MODDLL)
+        kldrModLXDoCallDLL(pModLX, pvMapping, 1 /* detach */, uHandle);
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModCallThread */
+static int kldrModLXCallThread(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle, unsigned fAttachingOrDetaching)
+{
+    /* no thread attach/detach callout. */
+    K_NOREF(pMod);
+    K_NOREF(pvMapping);
+    K_NOREF(uHandle);
+    K_NOREF(fAttachingOrDetaching);
+    return 0;
+}
+
+
+/** @copydoc kLdrModSize */
+static KLDRADDR kldrModLXSize(PKLDRMOD pMod)
+{
+    PKLDRMODLX pModLX = (PKLDRMODLX)pMod->pvData;
+    return pModLX->cbMapped;
+}
+
+
+/** @copydoc kLdrModGetBits */
+static int kldrModLXGetBits(PKLDRMOD pMod, void *pvBits, KLDRADDR BaseAddress, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    PKLDRMODLX  pModLX = (PKLDRMODLX)pMod->pvData;
+    int         rc;
+
+    /*
+     * Load the image bits.
+     */
+    rc = kldrModLXDoLoadBits(pModLX, pvBits);
+    if (rc)
+        return rc;
+
+    /*
+     * Perform relocations.
+     */
+    return kldrModLXRelocateBits(pMod, pvBits, BaseAddress, pMod->aSegments[0].LinkAddress, pfnGetImport, pvUser);
+
+}
+
+
+/** @copydoc kLdrModRelocateBits */
+static int kldrModLXRelocateBits(PKLDRMOD pMod, void *pvBits, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress,
+                                 PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    PKLDRMODLX pModLX = (PKLDRMODLX)pMod->pvData;
+    KU32 iSeg;
+    int rc;
+
+    /*
+     * Do we need to to *anything*?
+     */
+    if (    NewBaseAddress == OldBaseAddress
+        &&  NewBaseAddress == pModLX->paObjs[0].o32_base
+        &&  !pModLX->Hdr.e32_impmodcnt)
+        return 0;
+
+    /*
+     * Load the fixup section.
+     */
+    if (!pModLX->pbFixupSection)
+    {
+        rc = kldrModLXDoLoadFixupSection(pModLX);
+        if (rc)
+            return rc;
+    }
+
+    /*
+     * Iterate the segments.
+     */
+    for (iSeg = 0; iSeg < pModLX->Hdr.e32_objcnt; iSeg++)
+    {
+        const struct o32_obj * const pObj = &pModLX->paObjs[iSeg];
+        KLDRADDR        PageAddress = NewBaseAddress + pModLX->pMod->aSegments[iSeg].RVA;
+        KU32            iPage;
+        KU8            *pbPage = (KU8 *)pvBits + (KUPTR)pModLX->pMod->aSegments[iSeg].RVA;
+
+        /*
+         * Iterate the page map pages.
+         */
+        for (iPage = 0, rc = 0; !rc && iPage < pObj->o32_mapsize; iPage++, pbPage += OBJPAGELEN, PageAddress += OBJPAGELEN)
+        {
+            const KU8 * const   pbFixupRecEnd = pModLX->pbFixupRecs + pModLX->paoffPageFixups[iPage + pObj->o32_pagemap];
+            const KU8          *pb            = pModLX->pbFixupRecs + pModLX->paoffPageFixups[iPage + pObj->o32_pagemap - 1];
+            KLDRADDR            uValue        = NIL_KLDRADDR;
+            KU32                fKind         = 0;
+            int                 iSelector;
+
+            /* sanity */
+            if (pbFixupRecEnd < pb)
+                return KLDR_ERR_BAD_FIXUP;
+            if (pbFixupRecEnd - 1 > pModLX->pbFixupSectionLast)
+                return KLDR_ERR_BAD_FIXUP;
+            if (pb < pModLX->pbFixupSection)
+                return KLDR_ERR_BAD_FIXUP;
+
+            /*
+             * Iterate the fixup record.
+             */
+            while (pb < pbFixupRecEnd)
+            {
+                union _rel
+                {
+                    const KU8 *             pb;
+                    const struct r32_rlc   *prlc;
+                } u;
+
+                u.pb = pb;
+                pb += 3 + (u.prlc->nr_stype & NRCHAIN ? 0 : 1); /* place pch at the 4th member. */
+
+                /*
+                 * Figure out the target.
+                 */
+                switch (u.prlc->nr_flags & NRRTYP)
+                {
+                    /*
+                     * Internal fixup.
+                     */
+                    case NRRINT:
+                    {
+                        KU16 iTrgObject;
+                        KU32 offTrgObject;
+
+                        /* the object */
+                        if (u.prlc->nr_flags & NR16OBJMOD)
+                        {
+                            iTrgObject = *(const KU16 *)pb;
+                            pb += 2;
+                        }
+                        else
+                            iTrgObject = *pb++;
+                        iTrgObject--;
+                        if (iTrgObject >= pModLX->Hdr.e32_objcnt)
+                            return KLDR_ERR_BAD_FIXUP;
+
+                        /* the target */
+                        if ((u.prlc->nr_stype & NRSRCMASK) != NRSSEG)
+                        {
+                            if (u.prlc->nr_flags & NR32BITOFF)
+                            {
+                                offTrgObject = *(const KU32 *)pb;
+                                pb += 4;
+                            }
+                            else
+                            {
+                                offTrgObject = *(const KU16 *)pb;
+                                pb += 2;
+                            }
+
+                            /* calculate the symbol info. */
+                            uValue = offTrgObject + NewBaseAddress + pMod->aSegments[iTrgObject].RVA;
+                        }
+                        else
+                            uValue = NewBaseAddress + pMod->aSegments[iTrgObject].RVA;
+                        if (    (u.prlc->nr_stype & NRALIAS)
+                            ||  (pMod->aSegments[iTrgObject].fFlags & KLDRSEG_FLAG_16BIT))
+                            iSelector = pMod->aSegments[iTrgObject].Sel16bit;
+                        else
+                            iSelector = pMod->aSegments[iTrgObject].SelFlat;
+                        fKind = 0;
+                        break;
+                    }
+
+                    /*
+                     * Import by symbol ordinal.
+                     */
+                    case NRRORD:
+                    {
+                        KU16 iModule;
+                        KU32 iSymbol;
+
+                        /* the module ordinal */
+                        if (u.prlc->nr_flags & NR16OBJMOD)
+                        {
+                            iModule = *(const KU16 *)pb;
+                            pb += 2;
+                        }
+                        else
+                            iModule = *pb++;
+                        iModule--;
+                        if (iModule >= pModLX->Hdr.e32_impmodcnt)
+                            return KLDR_ERR_BAD_FIXUP;
+#if 1
+                        if (u.prlc->nr_flags & NRICHAIN)
+                            return KLDR_ERR_BAD_FIXUP;
+#endif
+
+                        /* . */
+                        if (u.prlc->nr_flags & NR32BITOFF)
+                        {
+                            iSymbol = *(const KU32 *)pb;
+                            pb += 4;
+                        }
+                        else if (!(u.prlc->nr_flags & NR8BITORD))
+                        {
+                            iSymbol = *(const KU16 *)pb;
+                            pb += 2;
+                        }
+                        else
+                            iSymbol = *pb++;
+
+                        /* resolve it. */
+                        rc = pfnGetImport(pMod, iModule, iSymbol, NULL, 0, NULL, &uValue, &fKind, pvUser);
+                        if (rc)
+                            return rc;
+                        iSelector = -1;
+                        break;
+                    }
+
+                    /*
+                     * Import by symbol name.
+                     */
+                    case NRRNAM:
+                    {
+                        KU32 iModule;
+                        KU16 offSymbol;
+                        const KU8 *pbSymbol;
+
+                        /* the module ordinal */
+                        if (u.prlc->nr_flags & NR16OBJMOD)
+                        {
+                            iModule = *(const KU16 *)pb;
+                            pb += 2;
+                        }
+                        else
+                            iModule = *pb++;
+                        iModule--;
+                        if (iModule >= pModLX->Hdr.e32_impmodcnt)
+                            return KLDR_ERR_BAD_FIXUP;
+#if 1
+                        if (u.prlc->nr_flags & NRICHAIN)
+                            return KLDR_ERR_BAD_FIXUP;
+#endif
+
+                        /* . */
+                        if (u.prlc->nr_flags & NR32BITOFF)
+                        {
+                            offSymbol = *(const KU32 *)pb;
+                            pb += 4;
+                        }
+                        else if (!(u.prlc->nr_flags & NR8BITORD))
+                        {
+                            offSymbol = *(const KU16 *)pb;
+                            pb += 2;
+                        }
+                        else
+                            offSymbol = *pb++;
+                        pbSymbol = pModLX->pbImportProcs + offSymbol;
+                        if (    pbSymbol < pModLX->pbImportProcs
+                            ||  pbSymbol > pModLX->pbFixupSectionLast)
+                            return KLDR_ERR_BAD_FIXUP;
+
+                        /* resolve it. */
+                        rc = pfnGetImport(pMod, iModule, NIL_KLDRMOD_SYM_ORDINAL, (const char *)pbSymbol + 1, *pbSymbol, NULL,
+                                          &uValue, &fKind, pvUser);
+                        if (rc)
+                            return rc;
+                        iSelector = -1;
+                        break;
+                    }
+
+                    case NRRENT:
+                        KLDRMODLX_ASSERT(!"NRRENT");
+                        /* Falls through. */
+                    default:
+                        iSelector = -1;
+                        break;
+                }
+
+                /* addend */
+                if (u.prlc->nr_flags & NRADD)
+                {
+                    if (u.prlc->nr_flags & NR32BITADD)
+                    {
+                        uValue += *(const KU32 *)pb;
+                        pb += 4;
+                    }
+                    else
+                    {
+                        uValue += *(const KU16 *)pb;
+                        pb += 2;
+                    }
+                }
+
+
+                /*
+                 * Deal with the 'source' (i.e. the place that should be modified - very logical).
+                 */
+                if (!(u.prlc->nr_stype & NRCHAIN))
+                {
+                    int off = u.prlc->r32_soff;
+
+                    /* common / simple */
+                    if (    (u.prlc->nr_stype & NRSRCMASK) == NROFF32
+                        &&  off >= 0
+                        &&  off <= (int)OBJPAGELEN - 4)
+                        *(KU32 *)&pbPage[off] = (KU32)uValue;
+                    else if (    (u.prlc->nr_stype & NRSRCMASK) == NRSOFF32
+                            &&  off >= 0
+                            &&  off <= (int)OBJPAGELEN - 4)
+                        *(KU32 *)&pbPage[off] = (KU32)(uValue - (PageAddress + off + 4));
+                    else
+                    {
+                        /* generic */
+                        rc = kldrModLXDoReloc(pbPage, off, PageAddress, u.prlc, iSelector, uValue, fKind);
+                        if (rc)
+                            return rc;
+                    }
+                }
+                else if (!(u.prlc->nr_flags & NRICHAIN))
+                {
+                    const KI16 *poffSrc = (const KI16 *)pb;
+                    KU8 c = u.pb[2];
+
+                    /* common / simple */
+                    if ((u.prlc->nr_stype & NRSRCMASK) == NROFF32)
+                    {
+                        while (c-- > 0)
+                        {
+                            int off = *poffSrc++;
+                            if (off >= 0 && off <= (int)OBJPAGELEN - 4)
+                                *(KU32 *)&pbPage[off] = (KU32)uValue;
+                            else
+                            {
+                                rc = kldrModLXDoReloc(pbPage, off, PageAddress, u.prlc, iSelector, uValue, fKind);
+                                if (rc)
+                                    return rc;
+                            }
+                        }
+                    }
+                    else if ((u.prlc->nr_stype & NRSRCMASK) == NRSOFF32)
+                    {
+                        while (c-- > 0)
+                        {
+                            int off = *poffSrc++;
+                            if (off >= 0 && off <= (int)OBJPAGELEN - 4)
+                                *(KU32 *)&pbPage[off] = (KU32)(uValue - (PageAddress + off + 4));
+                            else
+                            {
+                                rc = kldrModLXDoReloc(pbPage, off, PageAddress, u.prlc, iSelector, uValue, fKind);
+                                if (rc)
+                                    return rc;
+                            }
+                        }
+                    }
+                    else
+                    {
+                        while (c-- > 0)
+                        {
+                            rc = kldrModLXDoReloc(pbPage, *poffSrc++, PageAddress, u.prlc, iSelector, uValue, fKind);
+                            if (rc)
+                                return rc;
+                        }
+                    }
+                    pb = (const KU8 *)poffSrc;
+                }
+                else
+                {
+                    /* This is a pain because it will require virgin pages on a relocation. */
+                    KLDRMODLX_ASSERT(!"NRICHAIN");
+                    return KLDR_ERR_LX_NRICHAIN_NOT_SUPPORTED;
+                }
+            }
+        }
+    }
+
+    return 0;
+}
+
+
+/**
+ * Applies the relocation to one 'source' in a page.
+ *
+ * This takes care of the more esotic case while the common cases
+ * are dealt with seperately.
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pbPage      The page in which to apply the fixup.
+ * @param   off         Page relative offset of where to apply the offset.
+ * @param   uValue      The target value.
+ * @param   fKind       The target kind.
+ */
+static int kldrModLXDoReloc(KU8 *pbPage, int off, KLDRADDR PageAddress, const struct r32_rlc *prlc,
+                            int iSelector, KLDRADDR uValue, KU32 fKind)
+{
+#pragma pack(1) /* just to be sure */
+    union
+    {
+        KU8         ab[6];
+        KU32        off32;
+        KU16        off16;
+        KU8         off8;
+        struct
+        {
+            KU16    off;
+            KU16    Sel;
+        }           Far16;
+        struct
+        {
+            KU32    off;
+            KU16    Sel;
+        }           Far32;
+    }               uData;
+#pragma pack()
+    const KU8      *pbSrc;
+    KU8            *pbDst;
+    KU8             cb;
+
+    K_NOREF(fKind);
+
+    /*
+     * Compose the fixup data.
+     */
+    switch (prlc->nr_stype & NRSRCMASK)
+    {
+        case NRSBYT:
+            uData.off8 = (KU8)uValue;
+            cb = 1;
+            break;
+        case NRSSEG:
+            if (iSelector == -1)
+            {
+                /* fixme */
+            }
+            uData.off16 = iSelector;
+            cb = 2;
+            break;
+        case NRSPTR:
+            if (iSelector == -1)
+            {
+                /* fixme */
+            }
+            uData.Far16.off = (KU16)uValue;
+            uData.Far16.Sel = iSelector;
+            cb = 4;
+            break;
+        case NRSOFF:
+            uData.off16 = (KU16)uValue;
+            cb = 2;
+            break;
+        case NRPTR48:
+            if (iSelector == -1)
+            {
+                /* fixme */
+            }
+            uData.Far32.off = (KU32)uValue;
+            uData.Far32.Sel = iSelector;
+            cb = 6;
+            break;
+        case NROFF32:
+            uData.off32 = (KU32)uValue;
+            cb = 4;
+            break;
+        case NRSOFF32:
+            uData.off32 = (KU32)(uValue - (PageAddress + off + 4));
+            cb = 4;
+            break;
+        default:
+            return KLDR_ERR_LX_BAD_FIXUP_SECTION; /** @todo fix error, add more checks! */
+    }
+
+    /*
+     * Apply it. This is sloooow...
+     */
+    pbSrc = &uData.ab[0];
+    pbDst = pbPage + off;
+    while (cb-- > 0)
+    {
+        if (off > (int)OBJPAGELEN)
+            break;
+        if (off >= 0)
+            *pbDst = *pbSrc;
+        pbSrc++;
+        pbDst++;
+    }
+
+    return 0;
+}
+
+
+/**
+ * The LX module interpreter method table.
+ */
+KLDRMODOPS g_kLdrModLXOps =
+{
+    "LX",
+    NULL,
+    kldrModLXCreate,
+    kldrModLXDestroy,
+    kldrModLXQuerySymbol,
+    kldrModLXEnumSymbols,
+    kldrModLXGetImport,
+    kldrModLXNumberOfImports,
+    NULL /* can execute one is optional */,
+    kldrModLXGetStackInfo,
+    kldrModLXQueryMainEntrypoint,
+    NULL /* pfnQueryImageUuid */,
+    NULL /* fixme */,
+    NULL /* fixme */,
+    kldrModLXEnumDbgInfo,
+    kldrModLXHasDbgInfo,
+    kldrModLXMap,
+    kldrModLXUnmap,
+    kldrModLXAllocTLS,
+    kldrModLXFreeTLS,
+    kldrModLXReload,
+    kldrModLXFixupMapping,
+    kldrModLXCallInit,
+    kldrModLXCallTerm,
+    kldrModLXCallThread,
+    kldrModLXSize,
+    kldrModLXGetBits,
+    kldrModLXRelocateBits,
+    NULL /* fixme: pfnMostlyDone */,
+    42 /* the end */
+};
+
diff --git a/src/lib/kStuff/kLdr/kLdrModMachO.c b/src/lib/kStuff/kLdr/kLdrModMachO.c
new file mode 100644
index 0000000..9b97ec2
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrModMachO.c
@@ -0,0 +1,3729 @@
+/* $Id: kLdrModMachO.c 112 2018-07-04 09:37:39Z bird $ */
+/** @file
+ * kLdr - The Module Interpreter for the MACH-O format.
+ */
+
+/*
+ * Copyright (c) 2006-2013 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kLdr.h>
+#include "kLdrInternal.h"
+#include <k/kLdrFmts/mach-o.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** @def KLDRMODMACHO_STRICT
+ * Define KLDRMODMACHO_STRICT to enabled strict checks in KLDRMODMACHO. */
+#define KLDRMODMACHO_STRICT 1
+
+/** @def KLDRMODMACHO_ASSERT
+ * Assert that an expression is true when KLDR_STRICT is defined.
+ */
+#ifdef KLDRMODMACHO_STRICT
+# define KLDRMODMACHO_ASSERT(expr)  kHlpAssert(expr)
+#else
+# define KLDRMODMACHO_ASSERT(expr)  do {} while (0)
+#endif
+
+/** @def KLDRMODMACHO_CHECK_RETURN
+ * Checks that an expression is true and return if it isn't.
+ * This is a debug aid.
+ */
+#ifdef KLDRMODMACHO_STRICT2
+# define KLDRMODMACHO_CHECK_RETURN(expr, rc)  kHlpAssertReturn(expr, rc)
+#else
+# define KLDRMODMACHO_CHECK_RETURN(expr, rc)  do { if (!(expr)) { return (rc); } } while (0)
+#endif
+
+/** @def KLDRMODMACHO_CHECK_RETURN
+ * Checks that an expression is true and return if it isn't.
+ * This is a debug aid.
+ */
+#ifdef KLDRMODMACHO_STRICT2
+# define KLDRMODMACHO_FAILED_RETURN(rc)  kHlpAssertFailedReturn(rc)
+#else
+# define KLDRMODMACHO_FAILED_RETURN(rc)  return (rc)
+#endif
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Mach-O section details.
+ */
+typedef struct KLDRMODMACHOSECT
+{
+    /** The size of the section (in bytes). */
+    KLDRSIZE                cb;
+    /** The link address of this section. */
+    KLDRADDR                LinkAddress;
+    /** The RVA of this section. */
+    KLDRADDR                RVA;
+    /** The file offset of this section.
+     * This is -1 if the section doesn't have a file backing. */
+    KLDRFOFF                offFile;
+    /** The number of fixups. */
+    KU32                    cFixups;
+    /** The array of fixups. (lazy loaded) */
+    macho_relocation_info_t *paFixups;
+    /** The file offset of the fixups for this section.
+     * This is -1 if the section doesn't have any fixups. */
+    KLDRFOFF                offFixups;
+    /** Mach-O section flags. */
+    KU32                    fFlags;
+    /** kLdr segment index. */
+    KU32                    iSegment;
+    /** Pointer to the Mach-O section structure. */
+    void                   *pvMachoSection;
+} KLDRMODMACHOSECT, *PKLDRMODMACHOSECT;
+
+/**
+ * Extra per-segment info.
+ *
+ * This is corresponds to a kLdr segment, not a Mach-O segment!
+ */
+typedef struct KLDRMODMACHOSEG
+{
+    /** The orignal segment number (in case we had to resort it). */
+    KU32                    iOrgSegNo;
+    /** The number of sections in the segment. */
+    KU32                    cSections;
+    /** Pointer to the sections belonging to this segment.
+     * The array resides in the big memory chunk allocated for
+     * the module handle, so it doesn't need freeing. */
+    PKLDRMODMACHOSECT       paSections;
+
+} KLDRMODMACHOSEG, *PKLDRMODMACHOSEG;
+
+/**
+ * Instance data for the Mach-O MH_OBJECT module interpreter.
+ * @todo interpret the other MH_* formats.
+ */
+typedef struct KLDRMODMACHO
+{
+    /** Pointer to the module. (Follows the section table.) */
+    PKLDRMOD                pMod;
+    /** Pointer to the RDR file mapping of the raw file bits. NULL if not mapped. */
+    const void             *pvBits;
+    /** Pointer to the user mapping. */
+    void                   *pvMapping;
+    /** The module open flags. */
+    KU32                    fOpenFlags;
+
+    /** The offset of the image. (FAT fun.) */
+    KLDRFOFF                offImage;
+    /** The link address. */
+    KLDRADDR                LinkAddress;
+    /** The size of the mapped image. */
+    KLDRADDR                cbImage;
+    /** Whether we're capable of loading the image. */
+    KBOOL                   fCanLoad;
+    /** Whether we're creating a global offset table segment.
+     * This dependes on the cputype and image type. */
+    KBOOL                   fMakeGot;
+    /** The size of a indirect GOT jump stub entry.
+     * This is 0 if not needed. */
+    KU8                     cbJmpStub;
+    /** Effective file type.  If the original was a MH_OBJECT file, the
+     * corresponding MH_DSYM needs the segment translation of a MH_OBJECT too.
+     * The MH_DSYM normally has a separate __DWARF segment, but this is
+     * automatically skipped during the transation. */
+    KU8                     uEffFileType;
+    /** Pointer to the load commands. (endian converted) */
+    KU8                    *pbLoadCommands;
+    /** The Mach-O header. (endian converted)
+     * @remark The reserved field is only valid for real 64-bit headers. */
+    mach_header_64_t        Hdr;
+
+    /** The offset of the symbol table. */
+    KLDRFOFF                offSymbols;
+    /** The number of symbols. */
+    KU32                    cSymbols;
+    /** The pointer to the loaded symbol table. */
+    void                   *pvaSymbols;
+    /** The offset of the string table. */
+    KLDRFOFF                offStrings;
+    /** The size of the of the string table. */
+    KU32                    cchStrings;
+    /** Pointer to the loaded string table. */
+    char                   *pchStrings;
+
+    /** The image UUID, all zeros if not found. */
+    KU8                     abImageUuid[16];
+
+    /** The RVA of the Global Offset Table. */
+    KLDRADDR                GotRVA;
+    /** The RVA of the indirect GOT jump stubs.  */
+    KLDRADDR                JmpStubsRVA;
+
+    /** The number of sections. */
+    KU32                    cSections;
+    /** Pointer to the section array running in parallel to the Mach-O one. */
+    PKLDRMODMACHOSECT       paSections;
+
+    /** Array of segments parallel to the one in KLDRMOD. */
+    KLDRMODMACHOSEG         aSegments[1];
+} KLDRMODMACHO, *PKLDRMODMACHO;
+
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+#if 0
+static KI32 kldrModMachONumberOfImports(PKLDRMOD pMod, const void *pvBits);
+#endif
+static int kldrModMachORelocateBits(PKLDRMOD pMod, void *pvBits, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress,
+                                    PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+
+static int  kldrModMachODoCreate(PKRDR pRdr, KLDRFOFF offImage, KU32 fOpenFlags, PKLDRMODMACHO *ppMod);
+static int  kldrModMachOPreParseLoadCommands(KU8 *pbLoadCommands, const mach_header_32_t *pHdr, PKRDR pRdr, KLDRFOFF offImage,
+                                             KU32 fOpenFlags, KU32 *pcSegments, KU32 *pcSections, KU32 *pcbStringPool,
+                                             PKBOOL pfCanLoad, PKLDRADDR pLinkAddress, KU8 *puEffFileType);
+static int  kldrModMachOParseLoadCommands(PKLDRMODMACHO pModMachO, char *pbStringPool, KU32 cbStringPool);
+static int  kldrModMachOAdjustBaseAddress(PKLDRMODMACHO pModMachO, PKLDRADDR pBaseAddress);
+
+/*static int  kldrModMachOLoadLoadCommands(PKLDRMODMACHO pModMachO);*/
+static int  kldrModMachOLoadObjSymTab(PKLDRMODMACHO pModMachO);
+static int  kldrModMachOLoadFixups(PKLDRMODMACHO pModMachO, KLDRFOFF offFixups, KU32 cFixups, macho_relocation_info_t **ppaFixups);
+static int  kldrModMachOMapVirginBits(PKLDRMODMACHO pModMachO);
+
+static int  kldrModMachODoQuerySymbol32Bit(PKLDRMODMACHO pModMachO, const macho_nlist_32_t *paSyms, KU32 cSyms, const char *pchStrings,
+                                           KU32 cchStrings, KLDRADDR BaseAddress, KU32 iSymbol, const char *pchSymbol,
+                                           KU32 cchSymbol, PKLDRADDR puValue, KU32 *pfKind);
+static int  kldrModMachODoQuerySymbol64Bit(PKLDRMODMACHO pModMachO, const macho_nlist_64_t *paSyms, KU32 cSyms, const char *pchStrings,
+                                           KU32 cchStrings, KLDRADDR BaseAddress, KU32 iSymbol, const char *pchSymbol,
+                                           KU32 cchSymbol, PKLDRADDR puValue, KU32 *pfKind);
+static int  kldrModMachODoEnumSymbols32Bit(PKLDRMODMACHO pModMachO, const macho_nlist_32_t *paSyms, KU32 cSyms,
+                                           const char *pchStrings, KU32 cchStrings, KLDRADDR BaseAddress,
+                                           KU32 fFlags, PFNKLDRMODENUMSYMS pfnCallback, void *pvUser);
+static int  kldrModMachODoEnumSymbols64Bit(PKLDRMODMACHO pModMachO, const macho_nlist_64_t *paSyms, KU32 cSyms,
+                                           const char *pchStrings, KU32 cchStrings, KLDRADDR BaseAddress,
+                                           KU32 fFlags, PFNKLDRMODENUMSYMS pfnCallback, void *pvUser);
+static int  kldrModMachOObjDoImports(PKLDRMODMACHO pModMachO, KLDRADDR BaseAddress, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+static int  kldrModMachOObjDoFixups(PKLDRMODMACHO pModMachO, void *pvMapping, KLDRADDR NewBaseAddress);
+static int  kldrModMachOFixupSectionGeneric32Bit(PKLDRMODMACHO pModMachO, KU8 *pbSectBits, PKLDRMODMACHOSECT pFixupSect,
+                                                 macho_nlist_32_t *paSyms, KU32 cSyms, KLDRADDR NewBaseAddress);
+static int  kldrModMachOFixupSectionAMD64(PKLDRMODMACHO pModMachO, KU8 *pbSectBits, PKLDRMODMACHOSECT pFixupSect,
+                                          macho_nlist_64_t *paSyms, KU32 cSyms, KLDRADDR NewBaseAddress);
+
+static int  kldrModMachOMakeGOT(PKLDRMODMACHO pModMachO, void *pvBits, KLDRADDR NewBaseAddress);
+
+/*static int  kldrModMachODoFixups(PKLDRMODMACHO pModMachO, void *pvMapping, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress);
+static int  kldrModMachODoImports(PKLDRMODMACHO pModMachO, void *pvMapping, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);*/
+
+
+/**
+ * Create a loader module instance interpreting the executable image found
+ * in the specified file provider instance.
+ *
+ * @returns 0 on success and *ppMod pointing to a module instance.
+ *          On failure, a non-zero OS specific error code is returned.
+ * @param   pOps            Pointer to the registered method table.
+ * @param   pRdr            The file provider instance to use.
+ * @param   fFlags          Flags, MBZ.
+ * @param   enmCpuArch      The desired CPU architecture. KCPUARCH_UNKNOWN means
+ *                          anything goes, but with a preference for the current
+ *                          host architecture.
+ * @param   offNewHdr       The offset of the new header in MZ files. -1 if not found.
+ * @param   ppMod           Where to store the module instance pointer.
+ */
+static int kldrModMachOCreate(PCKLDRMODOPS pOps, PKRDR pRdr, KU32 fFlags, KCPUARCH enmCpuArch, KLDRFOFF offNewHdr, PPKLDRMOD ppMod)
+{
+    PKLDRMODMACHO pModMachO;
+    int rc;
+
+    /*
+     * Create the instance data and do a minimal header validation.
+     */
+    rc = kldrModMachODoCreate(pRdr, offNewHdr == -1 ? 0 : offNewHdr, fFlags, &pModMachO);
+    if (!rc)
+    {
+
+        /*
+         * Match up against the requested CPU architecture.
+         */
+        if (    enmCpuArch == KCPUARCH_UNKNOWN
+            ||  pModMachO->pMod->enmArch == enmCpuArch)
+        {
+            pModMachO->pMod->pOps = pOps;
+            pModMachO->pMod->u32Magic = KLDRMOD_MAGIC;
+            *ppMod = pModMachO->pMod;
+            return 0;
+        }
+        rc = KLDR_ERR_CPU_ARCH_MISMATCH;
+    }
+    if (pModMachO)
+    {
+        kHlpFree(pModMachO->pbLoadCommands);
+        kHlpFree(pModMachO);
+    }
+    return rc;
+}
+
+
+/**
+ * Separate function for reading creating the Mach-O module instance to
+ * simplify cleanup on failure.
+ */
+static int kldrModMachODoCreate(PKRDR pRdr, KLDRFOFF offImage, KU32 fOpenFlags, PKLDRMODMACHO *ppModMachO)
+{
+    union
+    {
+        mach_header_32_t    Hdr32;
+        mach_header_64_t    Hdr64;
+    } s;
+    PKLDRMODMACHO pModMachO;
+    PKLDRMOD pMod;
+    KU8 *pbLoadCommands;
+    KU32 cSegments = 0; /* (MSC maybe used uninitialized) */
+    KU32 cSections = 0; /* (MSC maybe used uninitialized) */
+    KU32 cbStringPool = 0; /* (MSC maybe used uninitialized) */
+    KSIZE cchFilename;
+    KSIZE cb;
+    KBOOL fMakeGot;
+    KBOOL fCanLoad = K_TRUE;
+    KLDRADDR LinkAddress = NIL_KLDRADDR; /* (MSC maybe used uninitialized) */
+    KU8 cbJmpStub;
+    KU8 uEffFileType = 0; /* (MSC maybe used uninitialized) */
+    int rc;
+    *ppModMachO = NULL;
+
+    kHlpAssert(&s.Hdr32.magic == &s.Hdr64.magic);
+    kHlpAssert(&s.Hdr32.flags == &s.Hdr64.flags);
+
+    /*
+     * Read the Mach-O header.
+     */
+    rc = kRdrRead(pRdr, &s, sizeof(s), offImage);
+    if (rc)
+        return rc;
+    if (    s.Hdr32.magic != IMAGE_MACHO32_SIGNATURE
+        &&  s.Hdr32.magic != IMAGE_MACHO64_SIGNATURE
+        )
+    {
+        if (    s.Hdr32.magic == IMAGE_MACHO32_SIGNATURE_OE
+            ||  s.Hdr32.magic == IMAGE_MACHO64_SIGNATURE_OE)
+            return KLDR_ERR_MACHO_OTHER_ENDIAN_NOT_SUPPORTED;
+        return KLDR_ERR_UNKNOWN_FORMAT;
+    }
+
+    /* sanity checks. */
+    if (    s.Hdr32.sizeofcmds > kRdrSize(pRdr) - sizeof(mach_header_32_t)
+        ||  s.Hdr32.sizeofcmds < sizeof(load_command_t) * s.Hdr32.ncmds
+        ||  (s.Hdr32.flags & ~MH_VALID_FLAGS))
+        return KLDR_ERR_MACHO_BAD_HEADER;
+    switch (s.Hdr32.cputype)
+    {
+        case CPU_TYPE_X86:
+            fMakeGot = K_FALSE;
+            cbJmpStub = 0;
+            break;
+        case CPU_TYPE_X86_64:
+            fMakeGot = s.Hdr32.filetype == MH_OBJECT;
+            cbJmpStub = fMakeGot ? 8 : 0;
+            break;
+        default:
+            return KLDR_ERR_MACHO_UNSUPPORTED_MACHINE;
+    }
+    if (   s.Hdr32.filetype != MH_OBJECT
+        && s.Hdr32.filetype != MH_EXECUTE
+        && s.Hdr32.filetype != MH_DYLIB
+        && s.Hdr32.filetype != MH_BUNDLE
+        && s.Hdr32.filetype != MH_DSYM
+        && s.Hdr32.filetype != MH_KEXT_BUNDLE)
+        return KLDR_ERR_MACHO_UNSUPPORTED_FILE_TYPE;
+
+    /*
+     * Read and pre-parse the load commands to figure out how many segments we'll be needing.
+     */
+    pbLoadCommands = kHlpAlloc(s.Hdr32.sizeofcmds);
+    if (!pbLoadCommands)
+        return KERR_NO_MEMORY;
+    rc = kRdrRead(pRdr, pbLoadCommands, s.Hdr32.sizeofcmds,
+                     s.Hdr32.magic == IMAGE_MACHO32_SIGNATURE
+                  || s.Hdr32.magic == IMAGE_MACHO32_SIGNATURE_OE
+                  ? sizeof(mach_header_32_t) + offImage
+                  : sizeof(mach_header_64_t) + offImage);
+    if (!rc)
+        rc = kldrModMachOPreParseLoadCommands(pbLoadCommands, &s.Hdr32, pRdr, offImage, fOpenFlags,
+                                              &cSegments, &cSections, &cbStringPool, &fCanLoad, &LinkAddress, &uEffFileType);
+    if (rc)
+    {
+        kHlpFree(pbLoadCommands);
+        return rc;
+    }
+    cSegments += fMakeGot;
+
+
+    /*
+     * Calc the instance size, allocate and initialize it.
+     */
+    cchFilename = kHlpStrLen(kRdrName(pRdr));
+    cb = K_ALIGN_Z(  K_OFFSETOF(KLDRMODMACHO, aSegments[cSegments])
+                      + sizeof(KLDRMODMACHOSECT) * cSections, 16)
+       + K_OFFSETOF(KLDRMOD, aSegments[cSegments])
+       + cchFilename + 1
+       + cbStringPool;
+    pModMachO = (PKLDRMODMACHO)kHlpAlloc(cb);
+    if (!pModMachO)
+        return KERR_NO_MEMORY;
+    *ppModMachO = pModMachO;
+    pModMachO->pbLoadCommands = pbLoadCommands;
+    pModMachO->offImage = offImage;
+
+    /* KLDRMOD */
+    pMod = (PKLDRMOD)((KU8 *)pModMachO + K_ALIGN_Z(  K_OFFSETOF(KLDRMODMACHO, aSegments[cSegments])
+                                                      + sizeof(KLDRMODMACHOSECT) * cSections, 16));
+    pMod->pvData = pModMachO;
+    pMod->pRdr = pRdr;
+    pMod->pOps = NULL;      /* set upon success. */
+    pMod->cSegments = cSegments;
+    pMod->cchFilename = (KU32)cchFilename;
+    pMod->pszFilename = (char *)&pMod->aSegments[pMod->cSegments];
+    kHlpMemCopy((char *)pMod->pszFilename, kRdrName(pRdr), cchFilename + 1);
+    pMod->pszName = kHlpGetFilename(pMod->pszFilename);
+    pMod->cchName = (KU32)(cchFilename - (pMod->pszName - pMod->pszFilename));
+    pMod->fFlags = 0;
+    switch (s.Hdr32.cputype)
+    {
+        case CPU_TYPE_X86:
+            pMod->enmArch = KCPUARCH_X86_32;
+            pMod->enmEndian = KLDRENDIAN_LITTLE;
+            switch (s.Hdr32.cpusubtype)
+            {
+                case CPU_SUBTYPE_I386_ALL: /* == CPU_SUBTYPE_386 */
+                    pMod->enmCpu = KCPU_X86_32_BLEND;
+                    break;
+                case CPU_SUBTYPE_486:
+                    pMod->enmCpu = KCPU_I486;
+                    break;
+                case CPU_SUBTYPE_486SX:
+                    pMod->enmCpu = KCPU_I486SX;
+                    break;
+                case CPU_SUBTYPE_PENT: /* == CPU_SUBTYPE_586 */
+                    pMod->enmCpu = KCPU_I586;
+                    break;
+                case CPU_SUBTYPE_PENTPRO:
+                case CPU_SUBTYPE_PENTII_M3:
+                case CPU_SUBTYPE_PENTII_M5:
+                case CPU_SUBTYPE_CELERON:
+                case CPU_SUBTYPE_CELERON_MOBILE:
+                case CPU_SUBTYPE_PENTIUM_3:
+                case CPU_SUBTYPE_PENTIUM_3_M:
+                case CPU_SUBTYPE_PENTIUM_3_XEON:
+                    pMod->enmCpu = KCPU_I686;
+                    break;
+                case CPU_SUBTYPE_PENTIUM_M:
+                case CPU_SUBTYPE_PENTIUM_4:
+                case CPU_SUBTYPE_PENTIUM_4_M:
+                case CPU_SUBTYPE_XEON:
+                case CPU_SUBTYPE_XEON_MP:
+                    pMod->enmCpu = KCPU_P4;
+                    break;
+
+                default:
+                    /* Hack for kextutil output. */
+                    if (   s.Hdr32.cpusubtype == 0
+                        && s.Hdr32.filetype   == MH_OBJECT)
+                        break;
+                    return KLDR_ERR_MACHO_UNSUPPORTED_MACHINE;
+            }
+            break;
+
+        case CPU_TYPE_X86_64:
+            pMod->enmArch = KCPUARCH_AMD64;
+            pMod->enmEndian = KLDRENDIAN_LITTLE;
+            switch (s.Hdr32.cpusubtype & ~CPU_SUBTYPE_MASK)
+            {
+                case CPU_SUBTYPE_X86_64_ALL:        pMod->enmCpu = KCPU_AMD64_BLEND; break;
+                default:
+                    return KLDR_ERR_MACHO_UNSUPPORTED_MACHINE;
+            }
+            break;
+
+        default:
+            return KLDR_ERR_MACHO_UNSUPPORTED_MACHINE;
+    }
+
+    pMod->enmFmt = KLDRFMT_MACHO;
+    switch (s.Hdr32.filetype)
+    {
+        case MH_OBJECT:     pMod->enmType = KLDRTYPE_OBJECT; break;
+        case MH_EXECUTE:    pMod->enmType = KLDRTYPE_EXECUTABLE_FIXED; break;
+        case MH_DYLIB:      pMod->enmType = KLDRTYPE_SHARED_LIBRARY_RELOCATABLE; break;
+        case MH_BUNDLE:     pMod->enmType = KLDRTYPE_SHARED_LIBRARY_RELOCATABLE; break;
+        case MH_KEXT_BUNDLE:pMod->enmType = KLDRTYPE_SHARED_LIBRARY_RELOCATABLE; break;
+        case MH_DSYM:       pMod->enmType = KLDRTYPE_DEBUG_INFO; break;
+        default:
+            return KLDR_ERR_MACHO_UNSUPPORTED_FILE_TYPE;
+    }
+    pMod->u32Magic = 0;     /* set upon success. */
+
+    /* KLDRMODMACHO */
+    pModMachO->pMod = pMod;
+    pModMachO->pvBits = NULL;
+    pModMachO->pvMapping = NULL;
+    pModMachO->fOpenFlags = fOpenFlags;
+    pModMachO->Hdr = s.Hdr64;
+    if (    s.Hdr32.magic == IMAGE_MACHO32_SIGNATURE
+        ||  s.Hdr32.magic == IMAGE_MACHO32_SIGNATURE_OE)
+        pModMachO->Hdr.reserved = 0;
+    pModMachO->LinkAddress = LinkAddress;
+    pModMachO->cbImage = 0;
+    pModMachO->fCanLoad = fCanLoad;
+    pModMachO->fMakeGot = fMakeGot;
+    pModMachO->cbJmpStub = cbJmpStub;
+    pModMachO->uEffFileType = uEffFileType;
+    pModMachO->offSymbols = 0;
+    pModMachO->cSymbols = 0;
+    pModMachO->pvaSymbols = NULL;
+    pModMachO->offStrings = 0;
+    pModMachO->cchStrings = 0;
+    pModMachO->pchStrings = NULL;
+    kHlpMemSet(pModMachO->abImageUuid, 0, sizeof(pModMachO->abImageUuid));
+    pModMachO->GotRVA = NIL_KLDRADDR;
+    pModMachO->JmpStubsRVA = NIL_KLDRADDR;
+    pModMachO->cSections = cSections;
+    pModMachO->paSections = (PKLDRMODMACHOSECT)&pModMachO->aSegments[pModMachO->pMod->cSegments];
+
+    /*
+     * Setup the KLDRMOD segment array.
+     */
+    rc = kldrModMachOParseLoadCommands(pModMachO, (char *)pMod->pszFilename + pMod->cchFilename + 1, cbStringPool);
+    if (rc)
+        return rc;
+
+    /*
+     * We're done.
+     */
+    return 0;
+}
+
+
+/**
+ * Converts, validates and preparses the load commands before we carve
+ * out the module instance.
+ *
+ * The conversion that's preformed is format endian to host endian.  The
+ * preparsing has to do with segment counting, section counting and string pool
+ * sizing.
+ *
+ * Segment are created in two different ways, depending on the file type.
+ *
+ * For object files there is only one segment command without a given segment
+ * name. The sections inside that segment have different segment names and are
+ * not sorted by their segname attribute.  We create one segment for each
+ * section, with the segment name being 'segname.sectname' in order to hopefully
+ * keep the names unique.  Debug sections does not get segments.
+ *
+ * For non-object files, one kLdr segment is created for each Mach-O segment.
+ * Debug segments is not exposed by kLdr via the kLdr segment table, but via the
+ * debug enumeration callback API.
+ *
+ * @returns 0 on success.
+ * @returns KLDR_ERR_MACHO_* on failure.
+ * @param   pbLoadCommands  The load commands to parse.
+ * @param   pHdr            The header.
+ * @param   pRdr            The file reader.
+ * @param   offImage        The image header (FAT fun).
+ * @param   pcSegments      Where to store the segment count.
+ * @param   pcSegments      Where to store the section count.
+ * @param   pcbStringPool   Where to store the string pool size.
+ * @param   pfCanLoad       Where to store the can-load-image indicator.
+ * @param   pLinkAddress    Where to store the image link address (i.e. the
+ *                          lowest segment address).
+ */
+static int  kldrModMachOPreParseLoadCommands(KU8 *pbLoadCommands, const mach_header_32_t *pHdr, PKRDR pRdr, KLDRFOFF offImage,
+                                             KU32 fOpenFlags, KU32 *pcSegments, KU32 *pcSections, KU32 *pcbStringPool,
+                                             PKBOOL pfCanLoad, PKLDRADDR pLinkAddress, KU8 *puEffFileType)
+{
+    union
+    {
+        KU8                  *pb;
+        load_command_t       *pLoadCmd;
+        segment_command_32_t *pSeg32;
+        segment_command_64_t *pSeg64;
+        thread_command_t     *pThread;
+        symtab_command_t     *pSymTab;
+        uuid_command_t       *pUuid;
+    } u;
+    const KU64 cbFile = kRdrSize(pRdr) - offImage;
+    KU32 cSegments = 0;
+    KU32 cSections = 0;
+    KSIZE cbStringPool = 0;
+    KU32 cLeft = pHdr->ncmds;
+    KU32 cbLeft = pHdr->sizeofcmds;
+    KU8 *pb = pbLoadCommands;
+    int cSegmentCommands = 0;
+    int cSymbolTabs = 0;
+    int fConvertEndian = pHdr->magic == IMAGE_MACHO32_SIGNATURE_OE
+                      || pHdr->magic == IMAGE_MACHO64_SIGNATURE_OE;
+    KU8 uEffFileType = *puEffFileType = pHdr->filetype;
+
+    *pcSegments = 0;
+    *pcSections = 0;
+    *pcbStringPool = 0;
+    *pfCanLoad = K_TRUE;
+    *pLinkAddress = ~(KLDRADDR)0;
+
+    while (cLeft-- > 0)
+    {
+        u.pb = pb;
+
+        /*
+         * Convert and validate command header.
+         */
+        KLDRMODMACHO_CHECK_RETURN(cbLeft >= sizeof(load_command_t), KLDR_ERR_MACHO_BAD_LOAD_COMMAND);
+        if (fConvertEndian)
+        {
+            u.pLoadCmd->cmd = K_E2E_U32(u.pLoadCmd->cmd);
+            u.pLoadCmd->cmdsize = K_E2E_U32(u.pLoadCmd->cmdsize);
+        }
+        KLDRMODMACHO_CHECK_RETURN(u.pLoadCmd->cmdsize <= cbLeft, KLDR_ERR_MACHO_BAD_LOAD_COMMAND);
+        cbLeft -= u.pLoadCmd->cmdsize;
+        pb += u.pLoadCmd->cmdsize;
+
+        /*
+         * Convert endian if needed, parse and validate the command.
+         */
+        switch (u.pLoadCmd->cmd)
+        {
+            case LC_SEGMENT_32:
+            {
+                segment_command_32_t *pSrcSeg = (segment_command_32_t *)u.pLoadCmd;
+                section_32_t   *pFirstSect    = (section_32_t *)(pSrcSeg + 1);
+                section_32_t   *pSect         = pFirstSect;
+                KU32            cSectionsLeft = pSrcSeg->nsects;
+                KU64            offSect       = 0;
+
+                /* Convert and verify the segment. */
+                KLDRMODMACHO_CHECK_RETURN(u.pLoadCmd->cmdsize >= sizeof(segment_command_32_t), KLDR_ERR_MACHO_BAD_LOAD_COMMAND);
+                KLDRMODMACHO_CHECK_RETURN(   pHdr->magic == IMAGE_MACHO32_SIGNATURE_OE
+                                          || pHdr->magic == IMAGE_MACHO32_SIGNATURE, KLDR_ERR_MACHO_BIT_MIX);
+                if (fConvertEndian)
+                {
+                    pSrcSeg->vmaddr   = K_E2E_U32(pSrcSeg->vmaddr);
+                    pSrcSeg->vmsize   = K_E2E_U32(pSrcSeg->vmsize);
+                    pSrcSeg->fileoff  = K_E2E_U32(pSrcSeg->fileoff);
+                    pSrcSeg->filesize = K_E2E_U32(pSrcSeg->filesize);
+                    pSrcSeg->maxprot  = K_E2E_U32(pSrcSeg->maxprot);
+                    pSrcSeg->initprot = K_E2E_U32(pSrcSeg->initprot);
+                    pSrcSeg->nsects   = K_E2E_U32(pSrcSeg->nsects);
+                    pSrcSeg->flags    = K_E2E_U32(pSrcSeg->flags);
+                }
+
+                /* Validation code shared with the 64-bit variant. */
+                #define VALIDATE_AND_ADD_SEGMENT(a_cBits) \
+                do { \
+                    KBOOL fSkipSeg = !kHlpStrComp(pSrcSeg->segname, "__DWARF")   /* Note: Not for non-object files. */ \
+                                  || (   !kHlpStrComp(pSrcSeg->segname, "__CTF") /* Their CTF tool did/does weird things, */ \
+                                      && pSrcSeg->vmsize == 0)                   /* overlapping vmaddr and zero vmsize. */ \
+                                  || (cSectionsLeft > 0 && (pFirstSect->flags & S_ATTR_DEBUG)); \
+                    \
+                    /* MH_DSYM files for MH_OBJECT files must have MH_OBJECT segment translation. */ \
+                    if (   uEffFileType == MH_DSYM \
+                        && cSegmentCommands == 0 \
+                        && pSrcSeg->segname[0] == '\0') \
+                        *puEffFileType = uEffFileType = MH_OBJECT; \
+                    \
+                    KLDRMODMACHO_CHECK_RETURN(   pSrcSeg->filesize == 0 \
+                                              || (   pSrcSeg->fileoff <= cbFile \
+                                                  && (KU64)pSrcSeg->fileoff + pSrcSeg->filesize <= cbFile), \
+                                              KLDR_ERR_MACHO_BAD_LOAD_COMMAND); \
+                    KLDRMODMACHO_CHECK_RETURN(   pSrcSeg->filesize <= pSrcSeg->vmsize \
+                                              || (fSkipSeg && !kHlpStrComp(pSrcSeg->segname, "__CTF") /* see above */), \
+                                              KLDR_ERR_MACHO_BAD_LOAD_COMMAND); \
+                    KLDRMODMACHO_CHECK_RETURN(!(~pSrcSeg->maxprot & pSrcSeg->initprot), \
+                                              KLDR_ERR_MACHO_BAD_LOAD_COMMAND); \
+                    KLDRMODMACHO_CHECK_RETURN(!(pSrcSeg->flags & ~(SG_HIGHVM | SG_FVMLIB | SG_NORELOC | SG_PROTECTED_VERSION_1)), \
+                                              KLDR_ERR_MACHO_BAD_LOAD_COMMAND); \
+                    KLDRMODMACHO_CHECK_RETURN(   pSrcSeg->nsects * sizeof(section_##a_cBits##_t) \
+                                              <= u.pLoadCmd->cmdsize - sizeof(segment_command_##a_cBits##_t), \
+                                              KLDR_ERR_MACHO_BAD_LOAD_COMMAND); \
+                    KLDRMODMACHO_CHECK_RETURN(   uEffFileType != MH_OBJECT \
+                                              || cSegmentCommands == 0 \
+                                              || (   cSegmentCommands == 1 \
+                                                  && uEffFileType == MH_OBJECT \
+                                                  && pHdr->filetype == MH_DSYM \
+                                                  && fSkipSeg), \
+                                              KLDR_ERR_MACHO_BAD_OBJECT_FILE); \
+                    cSegmentCommands++; \
+                    \
+                    /* Add the segment, if not object file. */ \
+                    if (!fSkipSeg && uEffFileType != MH_OBJECT) \
+                    { \
+                        cbStringPool += kHlpStrNLen(&pSrcSeg->segname[0], sizeof(pSrcSeg->segname)) + 1; \
+                        cSegments++; \
+                        if (cSegments == 1) /* The link address is set by the first segment. */  \
+                            *pLinkAddress = pSrcSeg->vmaddr; \
+                    } \
+                } while (0)
+
+                VALIDATE_AND_ADD_SEGMENT(32);
+
+                /*
+                 * Convert, validate and parse the sections.
+                 */
+                cSectionsLeft = pSrcSeg->nsects;
+                pFirstSect = pSect = (section_32_t *)(pSrcSeg + 1);
+                while (cSectionsLeft-- > 0)
+                {
+                    if (fConvertEndian)
+                    {
+                        pSect->addr      = K_E2E_U32(pSect->addr);
+                        pSect->size      = K_E2E_U32(pSect->size);
+                        pSect->offset    = K_E2E_U32(pSect->offset);
+                        pSect->align     = K_E2E_U32(pSect->align);
+                        pSect->reloff    = K_E2E_U32(pSect->reloff);
+                        pSect->nreloc    = K_E2E_U32(pSect->nreloc);
+                        pSect->flags     = K_E2E_U32(pSect->flags);
+                        pSect->reserved1 = K_E2E_U32(pSect->reserved1);
+                        pSect->reserved2 = K_E2E_U32(pSect->reserved2);
+                    }
+
+                    /* Validation code shared with the 64-bit variant. */
+                    #define VALIDATE_AND_ADD_SECTION(a_cBits) \
+                    do { \
+                        int fFileBits; \
+                        \
+                        /* validate */ \
+                        if (uEffFileType != MH_OBJECT) \
+                            KLDRMODMACHO_CHECK_RETURN(!kHlpStrComp(pSect->segname, pSrcSeg->segname),\
+                                                      KLDR_ERR_MACHO_BAD_SECTION); \
+                        \
+                        switch (pSect->flags & SECTION_TYPE) \
+                        { \
+                            case S_ZEROFILL: \
+                                KLDRMODMACHO_CHECK_RETURN(!pSect->reserved1, KLDR_ERR_MACHO_BAD_SECTION); \
+                                KLDRMODMACHO_CHECK_RETURN(!pSect->reserved2, KLDR_ERR_MACHO_BAD_SECTION); \
+                                fFileBits = 0; \
+                                break; \
+                            case S_REGULAR: \
+                            case S_CSTRING_LITERALS: \
+                            case S_COALESCED: \
+                            case S_4BYTE_LITERALS: \
+                            case S_8BYTE_LITERALS: \
+                            case S_16BYTE_LITERALS: \
+                                KLDRMODMACHO_CHECK_RETURN(!pSect->reserved1, KLDR_ERR_MACHO_BAD_SECTION); \
+                                KLDRMODMACHO_CHECK_RETURN(!pSect->reserved2, KLDR_ERR_MACHO_BAD_SECTION); \
+                                fFileBits = 1; \
+                                break; \
+                            \
+                            case S_SYMBOL_STUBS: \
+                                KLDRMODMACHO_CHECK_RETURN(!pSect->reserved1, KLDR_ERR_MACHO_BAD_SECTION); \
+                                /* reserved2 == stub size. 0 has been seen (corecrypto.kext) */ \
+                                KLDRMODMACHO_CHECK_RETURN(pSect->reserved2 < 64, KLDR_ERR_MACHO_BAD_SECTION); \
+                                fFileBits = 1; \
+                                break; \
+                            \
+                            case S_NON_LAZY_SYMBOL_POINTERS: \
+                            case S_LAZY_SYMBOL_POINTERS: \
+                            case S_LAZY_DYLIB_SYMBOL_POINTERS: \
+                                /* (reserved 1 = is indirect symbol table index) */ \
+                                KLDRMODMACHO_CHECK_RETURN(!pSect->reserved2, KLDR_ERR_MACHO_BAD_SECTION); \
+                                *pfCanLoad = K_FALSE; \
+                                fFileBits = -1; /* __DATA.__got in the 64-bit mach_kernel has bits, any things without bits? */ \
+                                break; \
+                            \
+                            case S_MOD_INIT_FUNC_POINTERS: \
+                                /** @todo this requires a query API or flag... (e.g. C++ constructors) */ \
+                                KLDRMODMACHO_CHECK_RETURN(fOpenFlags & KLDRMOD_OPEN_FLAGS_FOR_INFO, \
+                                                          KLDR_ERR_MACHO_UNSUPPORTED_INIT_SECTION); \
+                                /* Falls through. */ \
+                            case S_MOD_TERM_FUNC_POINTERS: \
+                                /** @todo this requires a query API or flag... (e.g. C++ destructors) */ \
+                                KLDRMODMACHO_CHECK_RETURN(fOpenFlags & KLDRMOD_OPEN_FLAGS_FOR_INFO, \
+                                                          KLDR_ERR_MACHO_UNSUPPORTED_TERM_SECTION); \
+                                KLDRMODMACHO_CHECK_RETURN(!pSect->reserved1, KLDR_ERR_MACHO_BAD_SECTION); \
+                                KLDRMODMACHO_CHECK_RETURN(!pSect->reserved2, KLDR_ERR_MACHO_BAD_SECTION); \
+                                fFileBits = 1; \
+                                break; /* ignored */ \
+                            \
+                            case S_LITERAL_POINTERS: \
+                            case S_DTRACE_DOF: \
+                                KLDRMODMACHO_CHECK_RETURN(!pSect->reserved1, KLDR_ERR_MACHO_BAD_SECTION); \
+                                KLDRMODMACHO_CHECK_RETURN(!pSect->reserved2, KLDR_ERR_MACHO_BAD_SECTION); \
+                                fFileBits = 1; \
+                                break; \
+                            \
+                            case S_INTERPOSING: \
+                            case S_GB_ZEROFILL: \
+                                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_UNSUPPORTED_SECTION); \
+                            \
+                            default: \
+                                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_UNKNOWN_SECTION); \
+                        } \
+                        KLDRMODMACHO_CHECK_RETURN(!(pSect->flags & ~(  S_ATTR_PURE_INSTRUCTIONS | S_ATTR_NO_TOC | S_ATTR_STRIP_STATIC_SYMS \
+                                                                     | S_ATTR_NO_DEAD_STRIP | S_ATTR_LIVE_SUPPORT | S_ATTR_SELF_MODIFYING_CODE \
+                                                                     | S_ATTR_DEBUG | S_ATTR_SOME_INSTRUCTIONS | S_ATTR_EXT_RELOC \
+                                                                     | S_ATTR_LOC_RELOC | SECTION_TYPE)), \
+                                                  KLDR_ERR_MACHO_BAD_SECTION); \
+                        KLDRMODMACHO_CHECK_RETURN((pSect->flags & S_ATTR_DEBUG) == (pFirstSect->flags & S_ATTR_DEBUG), \
+                                                  KLDR_ERR_MACHO_MIXED_DEBUG_SECTION_FLAGS); \
+                        \
+                        KLDRMODMACHO_CHECK_RETURN(pSect->addr - pSrcSeg->vmaddr <= pSrcSeg->vmsize, \
+                                                  KLDR_ERR_MACHO_BAD_SECTION); \
+                        KLDRMODMACHO_CHECK_RETURN(   pSect->addr - pSrcSeg->vmaddr + pSect->size <= pSrcSeg->vmsize \
+                                                  || !kHlpStrComp(pSrcSeg->segname, "__CTF") /* see above */, \
+                                                  KLDR_ERR_MACHO_BAD_SECTION); \
+                        KLDRMODMACHO_CHECK_RETURN(pSect->align < 31, \
+                                                  KLDR_ERR_MACHO_BAD_SECTION); \
+                        /* Workaround for buggy ld64 (or as, llvm, ++) that produces a misaligned __TEXT.__unwind_info. */ \
+                        /* Seen: pSect->align = 4, pSect->addr = 0x5ebe14.  Just adjust the alignment down. */ \
+                        if (   ((K_BIT32(pSect->align) - KU32_C(1)) & pSect->addr) \
+                            && pSect->align == 4 \
+                            && kHlpStrComp(pSect->sectname, "__unwind_info") == 0) \
+                            pSect->align = 2; \
+                        KLDRMODMACHO_CHECK_RETURN(!((K_BIT32(pSect->align) - KU32_C(1)) & pSect->addr), \
+                                                  KLDR_ERR_MACHO_BAD_SECTION); \
+                        KLDRMODMACHO_CHECK_RETURN(!((K_BIT32(pSect->align) - KU32_C(1)) & pSrcSeg->vmaddr), \
+                                                  KLDR_ERR_MACHO_BAD_SECTION); \
+                        \
+                        /* Adjust the section offset before we check file offset. */ \
+                        offSect = (offSect + K_BIT64(pSect->align) - KU64_C(1)) & ~(K_BIT64(pSect->align) - KU64_C(1)); \
+                        if (pSect->addr) \
+                        { \
+                            KLDRMODMACHO_CHECK_RETURN(offSect <= pSect->addr - pSrcSeg->vmaddr, KLDR_ERR_MACHO_BAD_SECTION); \
+                            if (offSect < pSect->addr - pSrcSeg->vmaddr) \
+                                offSect = pSect->addr - pSrcSeg->vmaddr; \
+                        } \
+                        \
+                        if (fFileBits && pSect->offset == 0 && pSrcSeg->fileoff == 0 && pHdr->filetype == MH_DSYM) \
+                            fFileBits = 0; \
+                        if (fFileBits) \
+                        { \
+                            if (uEffFileType != MH_OBJECT) \
+                            { \
+                                KLDRMODMACHO_CHECK_RETURN(pSect->offset == pSrcSeg->fileoff + offSect, \
+                                                          KLDR_ERR_MACHO_NON_CONT_SEG_BITS); \
+                                KLDRMODMACHO_CHECK_RETURN(pSect->offset - pSrcSeg->fileoff <= pSrcSeg->filesize, \
+                                                          KLDR_ERR_MACHO_BAD_SECTION); \
+                            } \
+                            KLDRMODMACHO_CHECK_RETURN(pSect->offset <= cbFile, \
+                                                      KLDR_ERR_MACHO_BAD_SECTION); \
+                            KLDRMODMACHO_CHECK_RETURN((KU64)pSect->offset + pSect->size <= cbFile, \
+                                                      KLDR_ERR_MACHO_BAD_SECTION); \
+                        } \
+                        else \
+                            KLDRMODMACHO_CHECK_RETURN(pSect->offset == 0, KLDR_ERR_MACHO_BAD_SECTION); \
+                        \
+                        if (!pSect->nreloc) \
+                            KLDRMODMACHO_CHECK_RETURN(!pSect->reloff, \
+                                                      KLDR_ERR_MACHO_BAD_SECTION); \
+                        else \
+                        { \
+                            KLDRMODMACHO_CHECK_RETURN(pSect->reloff <= cbFile, \
+                                                      KLDR_ERR_MACHO_BAD_SECTION); \
+                            KLDRMODMACHO_CHECK_RETURN(     (KU64)pSect->reloff \
+                                                         + (KLDRFOFF)pSect->nreloc * sizeof(macho_relocation_info_t) \
+                                                      <= cbFile, \
+                                                      KLDR_ERR_MACHO_BAD_SECTION); \
+                        } \
+                        \
+                        /* Validate against file type (pointless?) and count the section, for object files add segment. */ \
+                        switch (uEffFileType) \
+                        { \
+                            case MH_OBJECT: \
+                                if (   !(pSect->flags & S_ATTR_DEBUG) \
+                                    && kHlpStrComp(pSect->segname, "__DWARF")) \
+                                { \
+                                    cbStringPool += kHlpStrNLen(&pSect->segname[0], sizeof(pSect->segname)) + 1; \
+                                    cbStringPool += kHlpStrNLen(&pSect->sectname[0], sizeof(pSect->sectname)) + 1; \
+                                    cSegments++; \
+                                    if (cSegments == 1) /* The link address is set by the first segment. */  \
+                                        *pLinkAddress = pSect->addr; \
+                                } \
+                                /* Falls through. */ \
+                            case MH_EXECUTE: \
+                            case MH_DYLIB: \
+                            case MH_BUNDLE: \
+                            case MH_DSYM: \
+                            case MH_KEXT_BUNDLE: \
+                                cSections++; \
+                                break; \
+                            default: \
+                                KLDRMODMACHO_FAILED_RETURN(KERR_INVALID_PARAMETER); \
+                        } \
+                        \
+                        /* Advance the section offset, since we're also aligning it. */ \
+                        offSect += pSect->size; \
+                    } while (0) /* VALIDATE_AND_ADD_SECTION */
+
+                    VALIDATE_AND_ADD_SECTION(32);
+
+                    /* next */
+                    pSect++;
+                }
+                break;
+            }
+
+            case LC_SEGMENT_64:
+            {
+                segment_command_64_t *pSrcSeg = (segment_command_64_t *)u.pLoadCmd;
+                section_64_t   *pFirstSect    = (section_64_t *)(pSrcSeg + 1);
+                section_64_t   *pSect         = pFirstSect;
+                KU32            cSectionsLeft = pSrcSeg->nsects;
+                KU64            offSect       = 0;
+
+                /* Convert and verify the segment. */
+                KLDRMODMACHO_CHECK_RETURN(u.pLoadCmd->cmdsize >= sizeof(segment_command_64_t), KLDR_ERR_MACHO_BAD_LOAD_COMMAND);
+                KLDRMODMACHO_CHECK_RETURN(   pHdr->magic == IMAGE_MACHO64_SIGNATURE_OE
+                                          || pHdr->magic == IMAGE_MACHO64_SIGNATURE, KLDR_ERR_MACHO_BIT_MIX);
+                if (fConvertEndian)
+                {
+                    pSrcSeg->vmaddr   = K_E2E_U64(pSrcSeg->vmaddr);
+                    pSrcSeg->vmsize   = K_E2E_U64(pSrcSeg->vmsize);
+                    pSrcSeg->fileoff  = K_E2E_U64(pSrcSeg->fileoff);
+                    pSrcSeg->filesize = K_E2E_U64(pSrcSeg->filesize);
+                    pSrcSeg->maxprot  = K_E2E_U32(pSrcSeg->maxprot);
+                    pSrcSeg->initprot = K_E2E_U32(pSrcSeg->initprot);
+                    pSrcSeg->nsects   = K_E2E_U32(pSrcSeg->nsects);
+                    pSrcSeg->flags    = K_E2E_U32(pSrcSeg->flags);
+                }
+
+                VALIDATE_AND_ADD_SEGMENT(64);
+
+                /*
+                 * Convert, validate and parse the sections.
+                 */
+                while (cSectionsLeft-- > 0)
+                {
+                    if (fConvertEndian)
+                    {
+                        pSect->addr      = K_E2E_U64(pSect->addr);
+                        pSect->size      = K_E2E_U64(pSect->size);
+                        pSect->offset    = K_E2E_U32(pSect->offset);
+                        pSect->align     = K_E2E_U32(pSect->align);
+                        pSect->reloff    = K_E2E_U32(pSect->reloff);
+                        pSect->nreloc    = K_E2E_U32(pSect->nreloc);
+                        pSect->flags     = K_E2E_U32(pSect->flags);
+                        pSect->reserved1 = K_E2E_U32(pSect->reserved1);
+                        pSect->reserved2 = K_E2E_U32(pSect->reserved2);
+                    }
+
+                    VALIDATE_AND_ADD_SECTION(64);
+
+                    /* next */
+                    pSect++;
+                }
+                break;
+            } /* LC_SEGMENT_64 */
+
+
+            case LC_SYMTAB:
+            {
+                KSIZE cbSym;
+                if (fConvertEndian)
+                {
+                    u.pSymTab->symoff  = K_E2E_U32(u.pSymTab->symoff);
+                    u.pSymTab->nsyms   = K_E2E_U32(u.pSymTab->nsyms);
+                    u.pSymTab->stroff  = K_E2E_U32(u.pSymTab->stroff);
+                    u.pSymTab->strsize = K_E2E_U32(u.pSymTab->strsize);
+                }
+
+                /* verify */
+                cbSym = pHdr->magic == IMAGE_MACHO32_SIGNATURE
+                     || pHdr->magic == IMAGE_MACHO32_SIGNATURE_OE
+                      ? sizeof(macho_nlist_32_t)
+                      : sizeof(macho_nlist_64_t);
+                if (    u.pSymTab->symoff >= cbFile
+                    ||  (KU64)u.pSymTab->symoff + u.pSymTab->nsyms * cbSym > cbFile)
+                    KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_LOAD_COMMAND);
+                if (    u.pSymTab->stroff >= cbFile
+                    ||  (KU64)u.pSymTab->stroff + u.pSymTab->strsize > cbFile)
+                    KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_LOAD_COMMAND);
+
+                /* only one string in objects, please. */
+                cSymbolTabs++;
+                if (    uEffFileType == MH_OBJECT
+                    &&  cSymbolTabs != 1)
+                    KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_OBJECT_FILE);
+                break;
+            }
+
+            case LC_DYSYMTAB:
+                /** @todo deal with this! */
+                break;
+
+            case LC_THREAD:
+            case LC_UNIXTHREAD:
+            {
+                KU32 *pu32 = (KU32 *)(u.pb + sizeof(load_command_t));
+                KU32 cItemsLeft = (u.pThread->cmdsize - sizeof(load_command_t)) / sizeof(KU32);
+                while (cItemsLeft)
+                {
+                    /* convert & verify header items ([0] == flavor, [1] == KU32 count). */
+                    if (cItemsLeft < 2)
+                        KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_LOAD_COMMAND);
+                    if (fConvertEndian)
+                    {
+                        pu32[0] = K_E2E_U32(pu32[0]);
+                        pu32[1] = K_E2E_U32(pu32[1]);
+                    }
+                    if (pu32[1] + 2 > cItemsLeft)
+                        KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_LOAD_COMMAND);
+
+                    /* convert & verify according to flavor. */
+                    switch (pu32[0])
+                    {
+                        /** @todo */
+                        default:
+                            break;
+                    }
+
+                    /* next */
+                    cItemsLeft -= pu32[1] + 2;
+                    pu32 += pu32[1] + 2;
+                }
+                break;
+            }
+
+            case LC_UUID:
+                if (u.pUuid->cmdsize != sizeof(uuid_command_t))
+                    KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_LOAD_COMMAND);
+                /** @todo Check anything here need converting? */
+                break;
+
+            case LC_CODE_SIGNATURE:
+                if (u.pUuid->cmdsize != sizeof(linkedit_data_command_t))
+                    KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_LOAD_COMMAND);
+                break;
+
+            case LC_VERSION_MIN_MACOSX:
+            case LC_VERSION_MIN_IPHONEOS:
+                if (u.pUuid->cmdsize != sizeof(version_min_command_t))
+                    KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_LOAD_COMMAND);
+                break;
+
+            case LC_SOURCE_VERSION:     /* Harmless. It just gives a clue regarding the source code revision/version. */
+            case LC_DATA_IN_CODE:       /* Ignore */
+            case LC_DYLIB_CODE_SIGN_DRS:/* Ignore */
+                /** @todo valid command size. */
+                break;
+
+            case LC_FUNCTION_STARTS:    /** @todo dylib++ */
+                /* Ignore for now. */
+                break;
+            case LC_ID_DYLIB:           /** @todo dylib */
+            case LC_LOAD_DYLIB:         /** @todo dylib */
+            case LC_LOAD_DYLINKER:      /** @todo dylib */
+            case LC_TWOLEVEL_HINTS:     /** @todo dylib */
+            case LC_LOAD_WEAK_DYLIB:    /** @todo dylib */
+            case LC_ID_DYLINKER:        /** @todo dylib */
+            case LC_RPATH:              /** @todo dylib */
+            case LC_SEGMENT_SPLIT_INFO: /** @todo dylib++ */
+            case LC_REEXPORT_DYLIB:     /** @todo dylib */
+            case LC_DYLD_INFO:          /** @todo dylib */
+            case LC_DYLD_INFO_ONLY:     /** @todo dylib */
+            case LC_LOAD_UPWARD_DYLIB:  /** @todo dylib */
+            case LC_DYLD_ENVIRONMENT:   /** @todo dylib */
+            case LC_MAIN: /** @todo parse this and find and entry point or smth. */
+                /** @todo valid command size. */
+                if (!(fOpenFlags & KLDRMOD_OPEN_FLAGS_FOR_INFO))
+                    KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_UNSUPPORTED_LOAD_COMMAND);
+                *pfCanLoad = K_FALSE;
+                break;
+
+            case LC_LOADFVMLIB:
+            case LC_IDFVMLIB:
+            case LC_IDENT:
+            case LC_FVMFILE:
+            case LC_PREPAGE:
+            case LC_PREBOUND_DYLIB:
+            case LC_ROUTINES:
+            case LC_ROUTINES_64:
+            case LC_SUB_FRAMEWORK:
+            case LC_SUB_UMBRELLA:
+            case LC_SUB_CLIENT:
+            case LC_SUB_LIBRARY:
+            case LC_PREBIND_CKSUM:
+            case LC_SYMSEG:
+                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_UNSUPPORTED_LOAD_COMMAND);
+
+            default:
+                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_UNKNOWN_LOAD_COMMAND);
+        }
+    }
+
+    /* be strict. */
+    if (cbLeft)
+        KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_LOAD_COMMAND);
+
+    switch (uEffFileType)
+    {
+        case MH_OBJECT:
+        case MH_EXECUTE:
+        case MH_DYLIB:
+        case MH_BUNDLE:
+        case MH_DSYM:
+        case MH_KEXT_BUNDLE:
+            if (!cSegments)
+                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_OBJECT_FILE);
+            break;
+    }
+
+    *pcSegments = cSegments;
+    *pcSections = cSections;
+    *pcbStringPool = (KU32)cbStringPool;
+
+    return 0;
+}
+
+
+/**
+ * Parses the load commands after we've carved out the module instance.
+ *
+ * This fills in the segment table and perhaps some other properties.
+ *
+ * @returns 0 on success.
+ * @returns KLDR_ERR_MACHO_* on failure.
+ * @param   pModMachO       The module.
+ * @param   pbStringPool    The string pool
+ * @param   cbStringPool    The size of the string pool.
+ */
+static int  kldrModMachOParseLoadCommands(PKLDRMODMACHO pModMachO, char *pbStringPool, KU32 cbStringPool)
+{
+    union
+    {
+        const KU8                  *pb;
+        const load_command_t       *pLoadCmd;
+        const segment_command_32_t *pSeg32;
+        const segment_command_64_t *pSeg64;
+        const symtab_command_t     *pSymTab;
+        const uuid_command_t       *pUuid;
+    } u;
+    KU32 cLeft = pModMachO->Hdr.ncmds;
+    KU32 cbLeft = pModMachO->Hdr.sizeofcmds;
+    const KU8 *pb = pModMachO->pbLoadCommands;
+    PKLDRSEG pDstSeg = &pModMachO->pMod->aSegments[0];
+    PKLDRMODMACHOSEG pSegExtra = &pModMachO->aSegments[0];
+    PKLDRMODMACHOSECT pSectExtra = pModMachO->paSections;
+    const KU32 cSegments = pModMachO->pMod->cSegments;
+    PKLDRSEG pSegItr;
+    K_NOREF(cbStringPool);
+
+    while (cLeft-- > 0)
+    {
+        u.pb = pb;
+        cbLeft -= u.pLoadCmd->cmdsize;
+        pb += u.pLoadCmd->cmdsize;
+
+        /*
+         * Convert endian if needed, parse and validate the command.
+         */
+        switch (u.pLoadCmd->cmd)
+        {
+            case LC_SEGMENT_32:
+            {
+                const segment_command_32_t *pSrcSeg = (const segment_command_32_t *)u.pLoadCmd;
+                section_32_t   *pFirstSect    = (section_32_t *)(pSrcSeg + 1);
+                section_32_t   *pSect         = pFirstSect;
+                KU32            cSectionsLeft = pSrcSeg->nsects;
+
+                /* Adds a segment, used by the macro below and thus shared with the 64-bit segment variant. */
+                #define NEW_SEGMENT(a_cBits, a_achName1, a_fObjFile, a_achName2, a_SegAddr, a_cbSeg, a_fFileBits, a_offFile, a_cbFile) \
+                do { \
+                    pDstSeg->pvUser = NULL; \
+                    pDstSeg->pchName = pbStringPool; \
+                    pDstSeg->cchName = (KU32)kHlpStrNLen(a_achName1, sizeof(a_achName1)); \
+                    kHlpMemCopy(pbStringPool, a_achName1, pDstSeg->cchName); \
+                    pbStringPool += pDstSeg->cchName; \
+                    if (a_fObjFile) \
+                    {   /* MH_OBJECT: Add '.sectname' - sections aren't sorted by segments. */ \
+                        KSIZE cchName2 = kHlpStrNLen(a_achName2, sizeof(a_achName2)); \
+                        *pbStringPool++ = '.'; \
+                        kHlpMemCopy(pbStringPool, a_achName2, cchName2); \
+                        pbStringPool += cchName2; \
+                        pDstSeg->cchName += (KU32)cchName2; \
+                    } \
+                    *pbStringPool++ = '\0'; \
+                    pDstSeg->SelFlat = 0; \
+                    pDstSeg->Sel16bit = 0; \
+                    pDstSeg->fFlags = 0; \
+                    pDstSeg->enmProt = KPROT_EXECUTE_WRITECOPY; /** @todo fixme! */ \
+                    pDstSeg->cb = (a_cbSeg); \
+                    pDstSeg->Alignment = 1; /* updated while parsing sections. */ \
+                    pDstSeg->LinkAddress = (a_SegAddr); \
+                    if (a_fFileBits) \
+                    { \
+                        pDstSeg->offFile = (KLDRFOFF)((a_offFile) + pModMachO->offImage); \
+                        pDstSeg->cbFile  = (KLDRFOFF)(a_cbFile); \
+                    } \
+                    else \
+                    { \
+                        pDstSeg->offFile = -1; \
+                        pDstSeg->cbFile  = -1; \
+                    } \
+                    pDstSeg->RVA = (a_SegAddr) - pModMachO->LinkAddress; \
+                    pDstSeg->cbMapped = 0; \
+                    pDstSeg->MapAddress = 0; \
+                    \
+                    pSegExtra->iOrgSegNo = (KU32)(pSegExtra - &pModMachO->aSegments[0]); \
+                    pSegExtra->cSections = 0; \
+                    pSegExtra->paSections = pSectExtra; \
+                } while (0)
+
+                /* Closes the new segment - part of NEW_SEGMENT. */
+                #define CLOSE_SEGMENT() \
+                do { \
+                    pSegExtra->cSections = (KU32)(pSectExtra - pSegExtra->paSections); \
+                    pSegExtra++; \
+                    pDstSeg++; \
+                } while (0)
+
+
+                /* Shared with the 64-bit variant. */
+                #define ADD_SEGMENT_AND_ITS_SECTIONS(a_cBits) \
+                do { \
+                    KBOOL fAddSegOuter = K_FALSE; \
+                    \
+                    /* \
+                     * Check that the segment name is unique.  We couldn't do that \
+                     * in the preparsing stage. \
+                     */ \
+                    if (pModMachO->uEffFileType != MH_OBJECT) \
+                        for (pSegItr = &pModMachO->pMod->aSegments[0]; pSegItr != pDstSeg; pSegItr++) \
+                            if (!kHlpStrNComp(pSegItr->pchName, pSrcSeg->segname, sizeof(pSrcSeg->segname))) \
+                                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_DUPLICATE_SEGMENT_NAME); \
+                    \
+                    /* \
+                     * Create a new segment, unless we're supposed to skip this one. \
+                     */ \
+                    if (   pModMachO->uEffFileType != MH_OBJECT \
+                        && (cSectionsLeft == 0 || !(pFirstSect->flags & S_ATTR_DEBUG)) \
+                        && kHlpStrComp(pSrcSeg->segname, "__DWARF") \
+                        && kHlpStrComp(pSrcSeg->segname, "__CTF") ) \
+                    { \
+                        NEW_SEGMENT(a_cBits, pSrcSeg->segname, K_FALSE /*a_fObjFile*/, 0 /*a_achName2*/, \
+                                    pSrcSeg->vmaddr, pSrcSeg->vmsize, \
+                                    pSrcSeg->filesize != 0, pSrcSeg->fileoff, pSrcSeg->filesize); \
+                        fAddSegOuter = K_TRUE; \
+                    } \
+                    \
+                    /* \
+                     * Convert and parse the sections. \
+                     */ \
+                    while (cSectionsLeft-- > 0) \
+                    { \
+                        /* New segment if object file. */ \
+                        KBOOL fAddSegInner = K_FALSE; \
+                        if (   pModMachO->uEffFileType == MH_OBJECT \
+                            && !(pSect->flags & S_ATTR_DEBUG) \
+                            && kHlpStrComp(pSrcSeg->segname, "__DWARF") \
+                            && kHlpStrComp(pSrcSeg->segname, "__CTF") ) \
+                        { \
+                            kHlpAssert(!fAddSegOuter); \
+                            NEW_SEGMENT(a_cBits, pSect->segname, K_TRUE /*a_fObjFile*/, pSect->sectname, \
+                                        pSect->addr, pSect->size, \
+                                        pSect->offset != 0, pSect->offset, pSect->size); \
+                            fAddSegInner = K_TRUE; \
+                        } \
+                        \
+                        /* Section data extract. */ \
+                        pSectExtra->cb = pSect->size; \
+                        pSectExtra->RVA = pSect->addr - pDstSeg->LinkAddress; \
+                        pSectExtra->LinkAddress = pSect->addr; \
+                        if (pSect->offset) \
+                            pSectExtra->offFile = pSect->offset + pModMachO->offImage; \
+                        else \
+                            pSectExtra->offFile = -1; \
+                        pSectExtra->cFixups = pSect->nreloc; \
+                        pSectExtra->paFixups = NULL; \
+                        if (pSect->nreloc) \
+                            pSectExtra->offFixups = pSect->reloff + pModMachO->offImage; \
+                        else \
+                            pSectExtra->offFixups = -1; \
+                        pSectExtra->fFlags = pSect->flags; \
+                        pSectExtra->iSegment = (KU32)(pSegExtra - &pModMachO->aSegments[0]); \
+                        pSectExtra->pvMachoSection = pSect; \
+                        \
+                        /* Update the segment alignment, if we're not skipping it. */ \
+                        if (   (fAddSegOuter || fAddSegInner) \
+                            && pDstSeg->Alignment < ((KLDRADDR)1 << pSect->align)) \
+                            pDstSeg->Alignment = (KLDRADDR)1 << pSect->align; \
+                        \
+                        /* Next section, and if object file next segment. */ \
+                        pSectExtra++; \
+                        pSect++; \
+                        if (fAddSegInner) \
+                            CLOSE_SEGMENT(); \
+                    } \
+                    \
+                    /* Close the segment and advance. */ \
+                    if (fAddSegOuter) \
+                        CLOSE_SEGMENT(); \
+                } while (0) /* ADD_SEGMENT_AND_ITS_SECTIONS */
+
+                ADD_SEGMENT_AND_ITS_SECTIONS(32);
+                break;
+            }
+
+            case LC_SEGMENT_64:
+            {
+                const segment_command_64_t *pSrcSeg = (const segment_command_64_t *)u.pLoadCmd;
+                section_64_t   *pFirstSect    = (section_64_t *)(pSrcSeg + 1);
+                section_64_t   *pSect         = pFirstSect;
+                KU32            cSectionsLeft = pSrcSeg->nsects;
+
+                ADD_SEGMENT_AND_ITS_SECTIONS(64);
+                break;
+            }
+
+            case LC_SYMTAB:
+                switch (pModMachO->uEffFileType)
+                {
+                    case MH_OBJECT:
+                    case MH_EXECUTE:
+                    case MH_DYLIB: /** @todo ??? */
+                    case MH_BUNDLE:  /** @todo ??? */
+                    case MH_DSYM:
+                    case MH_KEXT_BUNDLE:
+                        pModMachO->offSymbols = u.pSymTab->symoff + pModMachO->offImage;
+                        pModMachO->cSymbols = u.pSymTab->nsyms;
+                        pModMachO->offStrings = u.pSymTab->stroff + pModMachO->offImage;
+                        pModMachO->cchStrings = u.pSymTab->strsize;
+                        break;
+                }
+                break;
+
+            case LC_UUID:
+                kHlpMemCopy(pModMachO->abImageUuid, u.pUuid->uuid, sizeof(pModMachO->abImageUuid));
+                break;
+
+            default:
+                break;
+        } /* command switch */
+    } /* while more commands */
+
+    kHlpAssert(pDstSeg == &pModMachO->pMod->aSegments[cSegments - pModMachO->fMakeGot]);
+
+    /*
+     * Adjust mapping addresses calculating the image size.
+     */
+    {
+        KBOOL               fLoadLinkEdit = K_FALSE;
+        PKLDRMODMACHOSECT   pSectExtraItr;
+        KLDRADDR            uNextRVA = 0;
+        KLDRADDR            cb;
+        KU32                cSegmentsToAdjust = cSegments - pModMachO->fMakeGot;
+        KU32                c;
+
+        for (;;)
+        {
+            /* Check if there is __DWARF segment at the end and make sure it's left
+               out of the RVA negotiations and image loading. */
+            if (   cSegmentsToAdjust > 0
+                && !kHlpStrComp(pModMachO->pMod->aSegments[cSegmentsToAdjust - 1].pchName, "__DWARF"))
+            {
+                cSegmentsToAdjust--;
+                pModMachO->pMod->aSegments[cSegmentsToAdjust].RVA = NIL_KLDRADDR;
+                pModMachO->pMod->aSegments[cSegmentsToAdjust].cbMapped = 0;
+                continue;
+            }
+
+            /* If we're skipping the __LINKEDIT segment, check for it and adjust
+               the number of segments we'll be messing with here.  ASSUMES it's
+               last (by now anyway). */
+            if (   !fLoadLinkEdit
+                && cSegmentsToAdjust > 0
+                && !kHlpStrComp(pModMachO->pMod->aSegments[cSegmentsToAdjust - 1].pchName, "__LINKEDIT"))
+            {
+                cSegmentsToAdjust--;
+                pModMachO->pMod->aSegments[cSegmentsToAdjust].RVA = NIL_KLDRADDR;
+                pModMachO->pMod->aSegments[cSegmentsToAdjust].cbMapped = 0;
+                continue;
+            }
+            break;
+        }
+
+        /* Adjust RVAs. */
+        c = cSegmentsToAdjust;
+        for (pDstSeg = &pModMachO->pMod->aSegments[0]; c-- > 0; pDstSeg++)
+        {
+            cb = pDstSeg->RVA - uNextRVA;
+            if (cb >= 0x00100000) /* 1MB */
+            {
+                pDstSeg->RVA = uNextRVA;
+                pModMachO->pMod->fFlags |= KLDRMOD_FLAGS_NON_CONTIGUOUS_LINK_ADDRS;
+            }
+            uNextRVA = pDstSeg->RVA + KLDR_ALIGN_ADDR(pDstSeg->cb, pDstSeg->Alignment);
+        }
+
+        /* Calculate the cbMapping members. */
+        c = cSegmentsToAdjust;
+        for (pDstSeg = &pModMachO->pMod->aSegments[0]; c-- > 1; pDstSeg++)
+        {
+
+            cb = pDstSeg[1].RVA - pDstSeg->RVA;
+            pDstSeg->cbMapped = (KSIZE)cb == cb ? (KSIZE)cb : KSIZE_MAX;
+        }
+
+        cb = KLDR_ALIGN_ADDR(pDstSeg->cb, pDstSeg->Alignment);
+        pDstSeg->cbMapped = (KSIZE)cb == cb ? (KSIZE)cb : KSIZE_MAX;
+
+        /* Set the image size. */
+        pModMachO->cbImage = pDstSeg->RVA + cb;
+
+        /* Fixup the section RVAs (internal). */
+        c        = cSegmentsToAdjust;
+        uNextRVA = pModMachO->cbImage;
+        pDstSeg  = &pModMachO->pMod->aSegments[0];
+        for (pSectExtraItr = pModMachO->paSections; pSectExtraItr != pSectExtra; pSectExtraItr++)
+        {
+            if (pSectExtraItr->iSegment < c)
+                pSectExtraItr->RVA += pDstSeg[pSectExtraItr->iSegment].RVA;
+            else
+            {
+                pSectExtraItr->RVA = uNextRVA;
+                uNextRVA += KLDR_ALIGN_ADDR(pSectExtraItr->cb, 64);
+            }
+        }
+    }
+
+    /*
+     * Make the GOT segment if necessary.
+     */
+    if (pModMachO->fMakeGot)
+    {
+        KU32 cbPtr = (   pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE
+                      || pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE_OE)
+                   ? sizeof(KU32)
+                   : sizeof(KU64);
+        KU32 cbGot = pModMachO->cSymbols * cbPtr;
+        KU32 cbJmpStubs;
+
+        pModMachO->GotRVA = pModMachO->cbImage;
+
+        if (pModMachO->cbJmpStub)
+        {
+            cbGot = K_ALIGN_Z(cbGot, 64);
+            pModMachO->JmpStubsRVA = pModMachO->GotRVA + cbGot;
+            cbJmpStubs = pModMachO->cbJmpStub * pModMachO->cSymbols;
+        }
+        else
+        {
+            pModMachO->JmpStubsRVA = NIL_KLDRADDR;
+            cbJmpStubs = 0;
+        }
+
+        pDstSeg = &pModMachO->pMod->aSegments[cSegments - 1];
+        pDstSeg->pvUser = NULL;
+        pDstSeg->pchName = "GOT";
+        pDstSeg->cchName = 3;
+        pDstSeg->SelFlat = 0;
+        pDstSeg->Sel16bit = 0;
+        pDstSeg->fFlags = 0;
+        pDstSeg->enmProt = KPROT_READONLY;
+        pDstSeg->cb = cbGot + cbJmpStubs;
+        pDstSeg->Alignment = 64;
+        pDstSeg->LinkAddress = pModMachO->LinkAddress + pModMachO->GotRVA;
+        pDstSeg->offFile = -1;
+        pDstSeg->cbFile  = -1;
+        pDstSeg->RVA = pModMachO->GotRVA;
+        pDstSeg->cbMapped = (KSIZE)KLDR_ALIGN_ADDR(cbGot + cbJmpStubs, pDstSeg->Alignment);
+        pDstSeg->MapAddress = 0;
+
+        pSegExtra->iOrgSegNo = KU32_MAX;
+        pSegExtra->cSections = 0;
+        pSegExtra->paSections = NULL;
+
+        pModMachO->cbImage += pDstSeg->cbMapped;
+    }
+
+    return 0;
+}
+
+
+/** @copydoc KLDRMODOPS::pfnDestroy */
+static int kldrModMachODestroy(PKLDRMOD pMod)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    int rc = 0;
+    KU32 i, j;
+    KLDRMODMACHO_ASSERT(!pModMachO->pvMapping);
+
+    i = pMod->cSegments;
+    while (i-- > 0)
+    {
+        j = pModMachO->aSegments[i].cSections;
+        while (j-- > 0)
+        {
+            kHlpFree(pModMachO->aSegments[i].paSections[j].paFixups);
+            pModMachO->aSegments[i].paSections[j].paFixups = NULL;
+        }
+    }
+
+    if (pMod->pRdr)
+    {
+        rc = kRdrClose(pMod->pRdr);
+        pMod->pRdr = NULL;
+    }
+    pMod->u32Magic = 0;
+    pMod->pOps = NULL;
+    kHlpFree(pModMachO->pbLoadCommands);
+    pModMachO->pbLoadCommands = NULL;
+    kHlpFree(pModMachO->pchStrings);
+    pModMachO->pchStrings = NULL;
+    kHlpFree(pModMachO->pvaSymbols);
+    pModMachO->pvaSymbols = NULL;
+    kHlpFree(pModMachO);
+    return rc;
+}
+
+
+/**
+ * Gets the right base address.
+ *
+ * @returns 0 on success.
+ * @returns A non-zero status code if the BaseAddress isn't right.
+ * @param   pModMachO       The interpreter module instance
+ * @param   pBaseAddress    The base address, IN & OUT. Optional.
+ */
+static int kldrModMachOAdjustBaseAddress(PKLDRMODMACHO pModMachO, PKLDRADDR pBaseAddress)
+{
+    /*
+     * Adjust the base address.
+     */
+    if (*pBaseAddress == KLDRMOD_BASEADDRESS_MAP)
+        *pBaseAddress = pModMachO->pMod->aSegments[0].MapAddress;
+    else if (*pBaseAddress == KLDRMOD_BASEADDRESS_LINK)
+        *pBaseAddress = pModMachO->LinkAddress;
+
+    return 0;
+}
+
+
+/**
+ * Resolves a linker generated symbol.
+ *
+ * The Apple linker generates symbols indicating the start and end of sections
+ * and segments.  This function checks for these and returns the right value.
+ *
+ * @returns 0 or KLDR_ERR_SYMBOL_NOT_FOUND.
+ * @param   pModMachO           The interpreter module instance.
+ * @param   pMod                The generic module instance.
+ * @param   pchSymbol           The symbol.
+ * @param   cchSymbol           The length of the symbol.
+ * @param   BaseAddress         The base address to apply when calculating the
+ *                              value.
+ * @param   puValue             Where to return the symbol value.
+ */
+static int kldrModMachOQueryLinkerSymbol(PKLDRMODMACHO pModMachO, PKLDRMOD pMod, const char *pchSymbol, KSIZE cchSymbol,
+                                         KLDRADDR BaseAddress, PKLDRADDR puValue)
+{
+    /*
+     * Match possible name prefixes.
+     */
+    static const struct
+    {
+        const char *pszPrefix;
+        KU8         cchPrefix;
+        KBOOL       fSection;
+        KBOOL       fStart;
+    }   s_aPrefixes[] =
+    {
+        { "section$start$",  (KU8)sizeof("section$start$") - 1,   K_TRUE,  K_TRUE },
+        { "section$end$",    (KU8)sizeof("section$end$") - 1,     K_TRUE,  K_FALSE},
+        { "segment$start$",  (KU8)sizeof("segment$start$") - 1,   K_FALSE, K_TRUE },
+        { "segment$end$",    (KU8)sizeof("segment$end$") - 1,     K_FALSE, K_FALSE},
+    };
+    KSIZE       cchSectName = 0;
+    const char *pchSectName = "";
+    KSIZE       cchSegName  = 0;
+    const char *pchSegName  = NULL;
+    KU32        iPrefix     = K_ELEMENTS(s_aPrefixes) - 1;
+    KU32        iSeg;
+    KLDRADDR    uValue;
+
+    for (;;)
+    {
+        KU8 const cchPrefix = s_aPrefixes[iPrefix].cchPrefix;
+        if (   cchSymbol > cchPrefix
+            && kHlpStrNComp(pchSymbol, s_aPrefixes[iPrefix].pszPrefix, cchPrefix) == 0)
+        {
+            pchSegName = pchSymbol + cchPrefix;
+            cchSegName = cchSymbol - cchPrefix;
+            break;
+        }
+
+        /* next */
+        if (!iPrefix)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+        iPrefix--;
+    }
+
+    /*
+     * Split the remainder into segment and section name, if necessary.
+     */
+    if (s_aPrefixes[iPrefix].fSection)
+    {
+        pchSectName = kHlpMemChr(pchSegName, '$', cchSegName);
+        if (!pchSectName)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+        cchSegName  = pchSectName - pchSegName;
+        pchSectName++;
+        cchSectName = cchSymbol - (pchSectName - pchSymbol);
+    }
+
+    /*
+     * Locate the segment.
+     */
+    if (!pMod->cSegments)
+        return KLDR_ERR_SYMBOL_NOT_FOUND;
+    for (iSeg = 0; iSeg < pMod->cSegments; iSeg++)
+    {
+        if (   pMod->aSegments[iSeg].cchName >= cchSegName
+            && kHlpMemComp(pMod->aSegments[iSeg].pchName, pchSegName, cchSegName) == 0)
+        {
+            section_32_t const *pSect;
+            if (   pMod->aSegments[iSeg].cchName == cchSegName
+                && pModMachO->Hdr.filetype != MH_OBJECT /* Good enough for __DWARF segs in MH_DHSYM, I hope. */)
+                break;
+
+            pSect = (section_32_t *)pModMachO->aSegments[iSeg].paSections[0].pvMachoSection;
+            if (   pModMachO->uEffFileType == MH_OBJECT
+                && pMod->aSegments[iSeg].cchName > cchSegName + 1
+                && pMod->aSegments[iSeg].pchName[cchSegName] == '.'
+                && kHlpStrNComp(&pMod->aSegments[iSeg].pchName[cchSegName + 1], pSect->sectname, sizeof(pSect->sectname)) == 0
+                && pMod->aSegments[iSeg].cchName - cchSegName - 1 <= sizeof(pSect->sectname) )
+                break;
+        }
+    }
+    if (iSeg >= pMod->cSegments)
+        return KLDR_ERR_SYMBOL_NOT_FOUND;
+
+    if (!s_aPrefixes[iPrefix].fSection)
+    {
+        /*
+         * Calculate the segment start/end address.
+         */
+        uValue = pMod->aSegments[iSeg].RVA;
+        if (!s_aPrefixes[iPrefix].fStart)
+            uValue += pMod->aSegments[iSeg].cb;
+    }
+    else
+    {
+        /*
+         * Locate the section.
+         */
+        KU32 iSect = pModMachO->aSegments[iSeg].cSections;
+        if (!iSect)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+        for (;;)
+        {
+            section_32_t *pSect = (section_32_t *)pModMachO->aSegments[iSeg].paSections[iSect].pvMachoSection;
+            if (   cchSectName <= sizeof(pSect->sectname)
+                && kHlpMemComp(pSect->sectname, pchSectName, cchSectName) == 0
+                && (   cchSectName == sizeof(pSect->sectname)
+                    || pSect->sectname[cchSectName] == '\0') )
+                break;
+            /* next */
+            if (!iSect)
+                return KLDR_ERR_SYMBOL_NOT_FOUND;
+            iSect--;
+        }
+
+        uValue = pModMachO->aSegments[iSeg].paSections[iSect].RVA;
+        if (!s_aPrefixes[iPrefix].fStart)
+            uValue += pModMachO->aSegments[iSeg].paSections[iSect].cb;
+    }
+
+    /*
+     * Convert from RVA to load address.
+     */
+    uValue += BaseAddress;
+    if (puValue)
+        *puValue = uValue;
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModQuerySymbol */
+static int kldrModMachOQuerySymbol(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 iSymbol,
+                                   const char *pchSymbol, KSIZE cchSymbol, const char *pszVersion,
+                                   PFNKLDRMODGETIMPORT pfnGetForwarder, void *pvUser, PKLDRADDR puValue, KU32 *pfKind)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    int rc;
+    K_NOREF(pvBits);
+    K_NOREF(pszVersion);
+    K_NOREF(pfnGetForwarder);
+    K_NOREF(pvUser);
+
+    /*
+     * Resolve defaults.
+     */
+    rc  = kldrModMachOAdjustBaseAddress(pModMachO, &BaseAddress);
+    if (rc)
+        return rc;
+
+    /*
+     * Refuse segmented requests for now.
+     */
+    KLDRMODMACHO_CHECK_RETURN(   !pfKind
+                              || (*pfKind & KLDRSYMKIND_REQ_TYPE_MASK) == KLDRSYMKIND_REQ_FLAT,
+                              KLDR_ERR_TODO);
+
+    /*
+     * Take action according to file type.
+     */
+    if (   pModMachO->Hdr.filetype == MH_OBJECT
+        || pModMachO->Hdr.filetype == MH_EXECUTE /** @todo dylib, execute, dsym: symbols */
+        || pModMachO->Hdr.filetype == MH_DYLIB
+        || pModMachO->Hdr.filetype == MH_BUNDLE
+        || pModMachO->Hdr.filetype == MH_DSYM
+        || pModMachO->Hdr.filetype == MH_KEXT_BUNDLE)
+    {
+        rc = kldrModMachOLoadObjSymTab(pModMachO);
+        if (!rc)
+        {
+            if (    pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE
+                ||  pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE_OE)
+                rc = kldrModMachODoQuerySymbol32Bit(pModMachO, (macho_nlist_32_t *)pModMachO->pvaSymbols, pModMachO->cSymbols,
+                                                    pModMachO->pchStrings, pModMachO->cchStrings, BaseAddress, iSymbol, pchSymbol,
+                                                    (KU32)cchSymbol, puValue, pfKind);
+            else
+                rc = kldrModMachODoQuerySymbol64Bit(pModMachO, (macho_nlist_64_t *)pModMachO->pvaSymbols, pModMachO->cSymbols,
+                                                    pModMachO->pchStrings, pModMachO->cchStrings, BaseAddress, iSymbol, pchSymbol,
+                                                    (KU32)cchSymbol, puValue, pfKind);
+        }
+
+        /*
+         * Check for link-editor generated symbols and supply what we can.
+         *
+         * As small service to clients that insists on adding a '_' prefix
+         * before querying symbols, we will ignore the prefix.
+         */
+        if (  rc == KLDR_ERR_SYMBOL_NOT_FOUND
+            && cchSymbol > sizeof("section$end$") - 1
+            && (    pchSymbol[0] == 's'
+                || (pchSymbol[1] == 's' && pchSymbol[0] == '_') )
+            && kHlpMemChr(pchSymbol, '$', cchSymbol) )
+        {
+            if (pchSymbol[0] == '_')
+                rc = kldrModMachOQueryLinkerSymbol(pModMachO, pMod, pchSymbol + 1, cchSymbol - 1, BaseAddress, puValue);
+            else
+                rc = kldrModMachOQueryLinkerSymbol(pModMachO, pMod, pchSymbol, cchSymbol, BaseAddress, puValue);
+        }
+    }
+    else
+        rc = KLDR_ERR_TODO;
+
+    return rc;
+}
+
+
+/**
+ * Lookup a symbol in a 32-bit symbol table.
+ *
+ * @returns See kLdrModQuerySymbol.
+ * @param   pModMachO
+ * @param   paSyms      Pointer to the symbol table.
+ * @param   cSyms       Number of symbols in the table.
+ * @param   pchStrings  Pointer to the string table.
+ * @param   cchStrings  Size of the string table.
+ * @param   BaseAddress Adjusted base address, see kLdrModQuerySymbol.
+ * @param   iSymbol     See kLdrModQuerySymbol.
+ * @param   pchSymbol   See kLdrModQuerySymbol.
+ * @param   cchSymbol   See kLdrModQuerySymbol.
+ * @param   puValue     See kLdrModQuerySymbol.
+ * @param   pfKind      See kLdrModQuerySymbol.
+ */
+static int kldrModMachODoQuerySymbol32Bit(PKLDRMODMACHO pModMachO, const macho_nlist_32_t *paSyms, KU32 cSyms,
+                                          const char *pchStrings, KU32 cchStrings, KLDRADDR BaseAddress, KU32 iSymbol,
+                                          const char *pchSymbol, KU32 cchSymbol, PKLDRADDR puValue, KU32 *pfKind)
+{
+    /*
+     * Find a valid symbol matching the search criteria.
+     */
+    if (iSymbol == NIL_KLDRMOD_SYM_ORDINAL)
+    {
+        /* simplify validation. */
+        if (cchStrings <= cchSymbol)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+        cchStrings -= cchSymbol;
+
+        /* external symbols are usually at the end, so search the other way. */
+        for (iSymbol = cSyms - 1; iSymbol != KU32_MAX; iSymbol--)
+        {
+            const char *psz;
+
+            /* Skip irrellevant and non-public symbols. */
+            if (paSyms[iSymbol].n_type & MACHO_N_STAB)
+                continue;
+            if ((paSyms[iSymbol].n_type & MACHO_N_TYPE) == MACHO_N_UNDF)
+                continue;
+            if (!(paSyms[iSymbol].n_type & MACHO_N_EXT)) /*??*/
+                continue;
+            if (paSyms[iSymbol].n_type & MACHO_N_PEXT) /*??*/
+                continue;
+
+            /* get name */
+            if (!paSyms[iSymbol].n_un.n_strx)
+                continue;
+            if ((KU32)paSyms[iSymbol].n_un.n_strx >= cchStrings)
+                continue;
+            psz = &pchStrings[paSyms[iSymbol].n_un.n_strx];
+            if (psz[cchSymbol])
+                continue;
+            if (kHlpMemComp(psz, pchSymbol, cchSymbol))
+                continue;
+
+            /* match! */
+            break;
+        }
+        if (iSymbol == KU32_MAX)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+    }
+    else
+    {
+        if (iSymbol >= cSyms)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+        if (paSyms[iSymbol].n_type & MACHO_N_STAB)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+        if ((paSyms[iSymbol].n_type & MACHO_N_TYPE) == MACHO_N_UNDF)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+    }
+
+    /*
+     * Calc the return values.
+     */
+    if (pfKind)
+    {
+        if (    pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE
+            ||  pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE_OE)
+            *pfKind = KLDRSYMKIND_32BIT | KLDRSYMKIND_NO_TYPE;
+        else
+            *pfKind = KLDRSYMKIND_64BIT | KLDRSYMKIND_NO_TYPE;
+        if (paSyms[iSymbol].n_desc & N_WEAK_DEF)
+            *pfKind |= KLDRSYMKIND_WEAK;
+    }
+
+    switch (paSyms[iSymbol].n_type & MACHO_N_TYPE)
+    {
+        case MACHO_N_SECT:
+        {
+            PKLDRMODMACHOSECT pSect;
+            KLDRADDR offSect;
+            KLDRMODMACHO_CHECK_RETURN((KU32)(paSyms[iSymbol].n_sect - 1) < pModMachO->cSections, KLDR_ERR_MACHO_BAD_SYMBOL);
+            pSect = &pModMachO->paSections[paSyms[iSymbol].n_sect - 1];
+
+            offSect = paSyms[iSymbol].n_value - pSect->LinkAddress;
+            KLDRMODMACHO_CHECK_RETURN(   offSect <= pSect->cb
+                                      || (   paSyms[iSymbol].n_sect == 1 /* special hack for __mh_execute_header */
+                                          && offSect == 0U - pSect->RVA
+                                          && pModMachO->uEffFileType != MH_OBJECT),
+                                      KLDR_ERR_MACHO_BAD_SYMBOL);
+            if (puValue)
+                *puValue = BaseAddress + pSect->RVA + offSect;
+
+            if (    pfKind
+                &&  (pSect->fFlags & (S_ATTR_PURE_INSTRUCTIONS | S_ATTR_SELF_MODIFYING_CODE)))
+                *pfKind = (*pfKind & ~KLDRSYMKIND_TYPE_MASK) | KLDRSYMKIND_CODE;
+            break;
+        }
+
+        case MACHO_N_ABS:
+            if (puValue)
+                *puValue = paSyms[iSymbol].n_value;
+            /*if (pfKind)
+                pfKind |= KLDRSYMKIND_ABS;*/
+            break;
+
+        case MACHO_N_PBUD:
+        case MACHO_N_INDR:
+            /** @todo implement indirect and prebound symbols. */
+        default:
+            KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_TODO);
+    }
+
+    return 0;
+}
+
+
+/**
+ * Lookup a symbol in a 64-bit symbol table.
+ *
+ * @returns See kLdrModQuerySymbol.
+ * @param   pModMachO
+ * @param   paSyms      Pointer to the symbol table.
+ * @param   cSyms       Number of symbols in the table.
+ * @param   pchStrings  Pointer to the string table.
+ * @param   cchStrings  Size of the string table.
+ * @param   BaseAddress Adjusted base address, see kLdrModQuerySymbol.
+ * @param   iSymbol     See kLdrModQuerySymbol.
+ * @param   pchSymbol   See kLdrModQuerySymbol.
+ * @param   cchSymbol   See kLdrModQuerySymbol.
+ * @param   puValue     See kLdrModQuerySymbol.
+ * @param   pfKind      See kLdrModQuerySymbol.
+ */
+static int kldrModMachODoQuerySymbol64Bit(PKLDRMODMACHO pModMachO, const macho_nlist_64_t *paSyms, KU32 cSyms,
+                                          const char *pchStrings, KU32 cchStrings, KLDRADDR BaseAddress, KU32 iSymbol,
+                                          const char *pchSymbol, KU32 cchSymbol, PKLDRADDR puValue, KU32 *pfKind)
+{
+    /*
+     * Find a valid symbol matching the search criteria.
+     */
+    if (iSymbol == NIL_KLDRMOD_SYM_ORDINAL)
+    {
+        /* simplify validation. */
+        if (cchStrings <= cchSymbol)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+        cchStrings -= cchSymbol;
+
+        /* external symbols are usually at the end, so search the other way. */
+        for (iSymbol = cSyms - 1; iSymbol != KU32_MAX; iSymbol--)
+        {
+            const char *psz;
+
+            /* Skip irrellevant and non-public symbols. */
+            if (paSyms[iSymbol].n_type & MACHO_N_STAB)
+                continue;
+            if ((paSyms[iSymbol].n_type & MACHO_N_TYPE) == MACHO_N_UNDF)
+                continue;
+            if (!(paSyms[iSymbol].n_type & MACHO_N_EXT)) /*??*/
+                continue;
+            if (paSyms[iSymbol].n_type & MACHO_N_PEXT) /*??*/
+                continue;
+
+            /* get name */
+            if (!paSyms[iSymbol].n_un.n_strx)
+                continue;
+            if ((KU32)paSyms[iSymbol].n_un.n_strx >= cchStrings)
+                continue;
+            psz = &pchStrings[paSyms[iSymbol].n_un.n_strx];
+            if (psz[cchSymbol])
+                continue;
+            if (kHlpMemComp(psz, pchSymbol, cchSymbol))
+                continue;
+
+            /* match! */
+            break;
+        }
+        if (iSymbol == KU32_MAX)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+    }
+    else
+    {
+        if (iSymbol >= cSyms)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+        if (paSyms[iSymbol].n_type & MACHO_N_STAB)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+        if ((paSyms[iSymbol].n_type & MACHO_N_TYPE) == MACHO_N_UNDF)
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+    }
+
+    /*
+     * Calc the return values.
+     */
+    if (pfKind)
+    {
+        if (    pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE
+            ||  pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE_OE)
+            *pfKind = KLDRSYMKIND_32BIT | KLDRSYMKIND_NO_TYPE;
+        else
+            *pfKind = KLDRSYMKIND_64BIT | KLDRSYMKIND_NO_TYPE;
+        if (paSyms[iSymbol].n_desc & N_WEAK_DEF)
+            *pfKind |= KLDRSYMKIND_WEAK;
+    }
+
+    switch (paSyms[iSymbol].n_type & MACHO_N_TYPE)
+    {
+        case MACHO_N_SECT:
+        {
+            PKLDRMODMACHOSECT pSect;
+            KLDRADDR offSect;
+            KLDRMODMACHO_CHECK_RETURN((KU32)(paSyms[iSymbol].n_sect - 1) < pModMachO->cSections, KLDR_ERR_MACHO_BAD_SYMBOL);
+            pSect = &pModMachO->paSections[paSyms[iSymbol].n_sect - 1];
+
+            offSect = paSyms[iSymbol].n_value - pSect->LinkAddress;
+            KLDRMODMACHO_CHECK_RETURN(   offSect <= pSect->cb
+                                      || (   paSyms[iSymbol].n_sect == 1 /* special hack for __mh_execute_header */
+                                          && offSect == 0U - pSect->RVA
+                                          && pModMachO->uEffFileType != MH_OBJECT),
+                                      KLDR_ERR_MACHO_BAD_SYMBOL);
+            if (puValue)
+                *puValue = BaseAddress + pSect->RVA + offSect;
+
+            if (    pfKind
+                &&  (pSect->fFlags & (S_ATTR_PURE_INSTRUCTIONS | S_ATTR_SELF_MODIFYING_CODE)))
+                *pfKind = (*pfKind & ~KLDRSYMKIND_TYPE_MASK) | KLDRSYMKIND_CODE;
+            break;
+        }
+
+        case MACHO_N_ABS:
+            if (puValue)
+                *puValue = paSyms[iSymbol].n_value;
+            /*if (pfKind)
+                pfKind |= KLDRSYMKIND_ABS;*/
+            break;
+
+        case MACHO_N_PBUD:
+        case MACHO_N_INDR:
+            /** @todo implement indirect and prebound symbols. */
+        default:
+            KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_TODO);
+    }
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModEnumSymbols */
+static int kldrModMachOEnumSymbols(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress,
+                                   KU32 fFlags, PFNKLDRMODENUMSYMS pfnCallback, void *pvUser)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    int rc;
+    K_NOREF(pvBits);
+
+    /*
+     * Resolve defaults.
+     */
+    rc  = kldrModMachOAdjustBaseAddress(pModMachO, &BaseAddress);
+    if (rc)
+        return rc;
+
+    /*
+     * Take action according to file type.
+     */
+    if (   pModMachO->Hdr.filetype == MH_OBJECT
+        || pModMachO->Hdr.filetype == MH_EXECUTE /** @todo dylib, execute, dsym: symbols */
+        || pModMachO->Hdr.filetype == MH_DYLIB
+        || pModMachO->Hdr.filetype == MH_BUNDLE
+        || pModMachO->Hdr.filetype == MH_DSYM
+        || pModMachO->Hdr.filetype == MH_KEXT_BUNDLE)
+    {
+        rc = kldrModMachOLoadObjSymTab(pModMachO);
+        if (!rc)
+        {
+            if (    pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE
+                ||  pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE_OE)
+                rc = kldrModMachODoEnumSymbols32Bit(pModMachO, (macho_nlist_32_t *)pModMachO->pvaSymbols, pModMachO->cSymbols,
+                                                    pModMachO->pchStrings, pModMachO->cchStrings, BaseAddress,
+                                                    fFlags, pfnCallback, pvUser);
+            else
+                rc = kldrModMachODoEnumSymbols64Bit(pModMachO, (macho_nlist_64_t *)pModMachO->pvaSymbols, pModMachO->cSymbols,
+                                                    pModMachO->pchStrings, pModMachO->cchStrings, BaseAddress,
+                                                    fFlags, pfnCallback, pvUser);
+        }
+    }
+    else
+        KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_TODO);
+
+    return rc;
+}
+
+
+/**
+ * Enum a 32-bit symbol table.
+ *
+ * @returns See kLdrModQuerySymbol.
+ * @param   pModMachO
+ * @param   paSyms      Pointer to the symbol table.
+ * @param   cSyms       Number of symbols in the table.
+ * @param   pchStrings  Pointer to the string table.
+ * @param   cchStrings  Size of the string table.
+ * @param   BaseAddress Adjusted base address, see kLdrModEnumSymbols.
+ * @param   fFlags      See kLdrModEnumSymbols.
+ * @param   pfnCallback See kLdrModEnumSymbols.
+ * @param   pvUser      See kLdrModEnumSymbols.
+ */
+static int kldrModMachODoEnumSymbols32Bit(PKLDRMODMACHO pModMachO, const macho_nlist_32_t *paSyms, KU32 cSyms,
+                                          const char *pchStrings, KU32 cchStrings, KLDRADDR BaseAddress,
+                                          KU32 fFlags, PFNKLDRMODENUMSYMS pfnCallback, void *pvUser)
+{
+    const KU32 fKindBase =    pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE
+                           || pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE_OE
+                         ? KLDRSYMKIND_32BIT : KLDRSYMKIND_64BIT;
+    KU32 iSym;
+    int rc;
+
+    /*
+     * Iterate the symbol table.
+     */
+    for (iSym = 0; iSym < cSyms; iSym++)
+    {
+        KU32 fKind;
+        KLDRADDR uValue;
+        const char *psz;
+        KSIZE cch;
+
+        /* Skip debug symbols and undefined symbols. */
+        if (paSyms[iSym].n_type & MACHO_N_STAB)
+            continue;
+        if ((paSyms[iSym].n_type & MACHO_N_TYPE) == MACHO_N_UNDF)
+            continue;
+
+        /* Skip non-public symbols unless they are requested explicitly. */
+        if (!(fFlags & KLDRMOD_ENUM_SYMS_FLAGS_ALL))
+        {
+            if (!(paSyms[iSym].n_type & MACHO_N_EXT)) /*??*/
+                continue;
+            if (paSyms[iSym].n_type & MACHO_N_PEXT) /*??*/
+                continue;
+            if (!paSyms[iSym].n_un.n_strx)
+                continue;
+        }
+
+        /*
+         * Gather symbol info
+         */
+
+        /* name */
+        KLDRMODMACHO_CHECK_RETURN((KU32)paSyms[iSym].n_un.n_strx < cchStrings, KLDR_ERR_MACHO_BAD_SYMBOL);
+        psz = &pchStrings[paSyms[iSym].n_un.n_strx];
+        cch = kHlpStrLen(psz);
+        if (!cch)
+            psz = NULL;
+
+        /* kind & value */
+        fKind = fKindBase;
+        if (paSyms[iSym].n_desc & N_WEAK_DEF)
+            fKind |= KLDRSYMKIND_WEAK;
+        switch (paSyms[iSym].n_type & MACHO_N_TYPE)
+        {
+            case MACHO_N_SECT:
+            {
+                PKLDRMODMACHOSECT pSect;
+                KLDRMODMACHO_CHECK_RETURN((KU32)(paSyms[iSym].n_sect - 1) < pModMachO->cSections, KLDR_ERR_MACHO_BAD_SYMBOL);
+                pSect = &pModMachO->paSections[paSyms[iSym].n_sect - 1];
+
+                uValue = paSyms[iSym].n_value - pSect->LinkAddress;
+                KLDRMODMACHO_CHECK_RETURN(   uValue <= pSect->cb
+                                          || (   paSyms[iSym].n_sect == 1 /* special hack for __mh_execute_header */
+                                              && uValue == 0U - pSect->RVA
+                                              && pModMachO->uEffFileType != MH_OBJECT),
+                                          KLDR_ERR_MACHO_BAD_SYMBOL);
+                uValue += BaseAddress + pSect->RVA;
+
+                if (pSect->fFlags & (S_ATTR_PURE_INSTRUCTIONS | S_ATTR_SELF_MODIFYING_CODE))
+                    fKind |= KLDRSYMKIND_CODE;
+                else
+                    fKind |= KLDRSYMKIND_NO_TYPE;
+                break;
+            }
+
+            case MACHO_N_ABS:
+                uValue = paSyms[iSym].n_value;
+                fKind |= KLDRSYMKIND_NO_TYPE /*KLDRSYMKIND_ABS*/;
+                break;
+
+            case MACHO_N_PBUD:
+            case MACHO_N_INDR:
+                /** @todo implement indirect and prebound symbols. */
+            default:
+                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_TODO);
+        }
+
+        /*
+         * Do callback.
+         */
+        rc = pfnCallback(pModMachO->pMod, iSym, psz, cch, NULL, uValue, fKind, pvUser);
+        if (rc)
+            return rc;
+    }
+    return 0;
+}
+
+
+/**
+ * Enum a 64-bit symbol table.
+ *
+ * @returns See kLdrModQuerySymbol.
+ * @param   pModMachO
+ * @param   paSyms      Pointer to the symbol table.
+ * @param   cSyms       Number of symbols in the table.
+ * @param   pchStrings  Pointer to the string table.
+ * @param   cchStrings  Size of the string table.
+ * @param   BaseAddress Adjusted base address, see kLdrModEnumSymbols.
+ * @param   fFlags      See kLdrModEnumSymbols.
+ * @param   pfnCallback See kLdrModEnumSymbols.
+ * @param   pvUser      See kLdrModEnumSymbols.
+ */
+static int kldrModMachODoEnumSymbols64Bit(PKLDRMODMACHO pModMachO, const macho_nlist_64_t *paSyms, KU32 cSyms,
+                                          const char *pchStrings, KU32 cchStrings, KLDRADDR BaseAddress,
+                                          KU32 fFlags, PFNKLDRMODENUMSYMS pfnCallback, void *pvUser)
+{
+    const KU32 fKindBase =    pModMachO->Hdr.magic == IMAGE_MACHO64_SIGNATURE
+                           || pModMachO->Hdr.magic == IMAGE_MACHO64_SIGNATURE_OE
+                         ? KLDRSYMKIND_64BIT : KLDRSYMKIND_32BIT;
+    KU32 iSym;
+    int rc;
+
+    /*
+     * Iterate the symbol table.
+     */
+    for (iSym = 0; iSym < cSyms; iSym++)
+    {
+        KU32 fKind;
+        KLDRADDR uValue;
+        const char *psz;
+        KSIZE cch;
+
+        /* Skip debug symbols and undefined symbols. */
+        if (paSyms[iSym].n_type & MACHO_N_STAB)
+            continue;
+        if ((paSyms[iSym].n_type & MACHO_N_TYPE) == MACHO_N_UNDF)
+            continue;
+
+        /* Skip non-public symbols unless they are requested explicitly. */
+        if (!(fFlags & KLDRMOD_ENUM_SYMS_FLAGS_ALL))
+        {
+            if (!(paSyms[iSym].n_type & MACHO_N_EXT)) /*??*/
+                continue;
+            if (paSyms[iSym].n_type & MACHO_N_PEXT) /*??*/
+                continue;
+            if (!paSyms[iSym].n_un.n_strx)
+                continue;
+        }
+
+        /*
+         * Gather symbol info
+         */
+
+        /* name */
+        KLDRMODMACHO_CHECK_RETURN((KU32)paSyms[iSym].n_un.n_strx < cchStrings, KLDR_ERR_MACHO_BAD_SYMBOL);
+        psz = &pchStrings[paSyms[iSym].n_un.n_strx];
+        cch = kHlpStrLen(psz);
+        if (!cch)
+            psz = NULL;
+
+        /* kind & value */
+        fKind = fKindBase;
+        if (paSyms[iSym].n_desc & N_WEAK_DEF)
+            fKind |= KLDRSYMKIND_WEAK;
+        switch (paSyms[iSym].n_type & MACHO_N_TYPE)
+        {
+            case MACHO_N_SECT:
+            {
+                PKLDRMODMACHOSECT pSect;
+                KLDRMODMACHO_CHECK_RETURN((KU32)(paSyms[iSym].n_sect - 1) < pModMachO->cSections, KLDR_ERR_MACHO_BAD_SYMBOL);
+                pSect = &pModMachO->paSections[paSyms[iSym].n_sect - 1];
+
+                uValue = paSyms[iSym].n_value - pSect->LinkAddress;
+                KLDRMODMACHO_CHECK_RETURN(   uValue <= pSect->cb
+                                          || (   paSyms[iSym].n_sect == 1 /* special hack for __mh_execute_header */
+                                              && uValue == 0U - pSect->RVA
+                                              && pModMachO->uEffFileType != MH_OBJECT),
+                                          KLDR_ERR_MACHO_BAD_SYMBOL);
+                uValue += BaseAddress + pSect->RVA;
+
+                if (pSect->fFlags & (S_ATTR_PURE_INSTRUCTIONS | S_ATTR_SELF_MODIFYING_CODE))
+                    fKind |= KLDRSYMKIND_CODE;
+                else
+                    fKind |= KLDRSYMKIND_NO_TYPE;
+                break;
+            }
+
+            case MACHO_N_ABS:
+                uValue = paSyms[iSym].n_value;
+                fKind |= KLDRSYMKIND_NO_TYPE /*KLDRSYMKIND_ABS*/;
+                break;
+
+            case MACHO_N_PBUD:
+            case MACHO_N_INDR:
+                /** @todo implement indirect and prebound symbols. */
+            default:
+                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_TODO);
+        }
+
+        /*
+         * Do callback.
+         */
+        rc = pfnCallback(pModMachO->pMod, iSym, psz, cch, NULL, uValue, fKind, pvUser);
+        if (rc)
+            return rc;
+    }
+    return 0;
+}
+
+
+/** @copydoc kLdrModGetImport */
+static int kldrModMachOGetImport(PKLDRMOD pMod, const void *pvBits, KU32 iImport, char *pszName, KSIZE cchName)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    K_NOREF(pvBits);
+    K_NOREF(iImport);
+    K_NOREF(pszName);
+    K_NOREF(cchName);
+
+    if (pModMachO->Hdr.filetype == MH_OBJECT)
+        return KLDR_ERR_IMPORT_ORDINAL_OUT_OF_BOUNDS;
+
+    /* later */
+    return KLDR_ERR_IMPORT_ORDINAL_OUT_OF_BOUNDS;
+}
+
+
+/** @copydoc kLdrModNumberOfImports */
+static KI32 kldrModMachONumberOfImports(PKLDRMOD pMod, const void *pvBits)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    K_NOREF(pvBits);
+
+    if (pModMachO->Hdr.filetype == MH_OBJECT)
+        return 0;
+
+    /* later */
+    return 0;
+}
+
+
+/** @copydoc kLdrModGetStackInfo */
+static int kldrModMachOGetStackInfo(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRSTACKINFO pStackInfo)
+{
+    /*PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;*/
+    K_NOREF(pMod);
+    K_NOREF(pvBits);
+    K_NOREF(BaseAddress);
+
+    pStackInfo->Address = NIL_KLDRADDR;
+    pStackInfo->LinkAddress = NIL_KLDRADDR;
+    pStackInfo->cbStack = pStackInfo->cbStackThread = 0;
+    /* later */
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModQueryMainEntrypoint */
+static int kldrModMachOQueryMainEntrypoint(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRADDR pMainEPAddress)
+{
+#if 0
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    int rc;
+
+    /*
+     * Resolve base address alias if any.
+     */
+    rc = kldrModMachOBitsAndBaseAddress(pModMachO, NULL, &BaseAddress);
+    if (rc)
+        return rc;
+
+    /*
+     * Convert the address from the header.
+     */
+    *pMainEPAddress = pModMachO->Hdrs.OptionalHeader.AddressOfEntryPoint
+        ? BaseAddress + pModMachO->Hdrs.OptionalHeader.AddressOfEntryPoint
+        : NIL_KLDRADDR;
+#else
+    *pMainEPAddress = NIL_KLDRADDR;
+    K_NOREF(pvBits);
+    K_NOREF(BaseAddress);
+    K_NOREF(pMod);
+#endif
+    return 0;
+}
+
+
+/** @copydoc kLdrModQueryImageUuid */
+static int kldrModMachOQueryImageUuid(PKLDRMOD pMod, const void *pvBits, void *pvUuid, KSIZE cbUuid)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    K_NOREF(pvBits);
+
+    kHlpMemSet(pvUuid, 0, cbUuid);
+    if (kHlpMemComp(pvUuid, pModMachO->abImageUuid, sizeof(pModMachO->abImageUuid)) == 0)
+        return KLDR_ERR_NO_IMAGE_UUID;
+
+    kHlpMemCopy(pvUuid, pModMachO->abImageUuid, sizeof(pModMachO->abImageUuid));
+    return 0;
+}
+
+
+/** @copydoc kLdrModEnumDbgInfo */
+static int kldrModMachOEnumDbgInfo(PKLDRMOD pMod, const void *pvBits, PFNKLDRENUMDBG pfnCallback, void *pvUser)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    int rc = 0;
+    KU32 iSect;
+    K_NOREF(pvBits);
+
+    for (iSect = 0; iSect < pModMachO->cSections; iSect++)
+    {
+        section_32_t *pMachOSect = pModMachO->paSections[iSect].pvMachoSection; /* (32-bit & 64-bit starts the same way) */
+        char          szTmp[sizeof(pMachOSect->sectname) + 1];
+
+        if (kHlpStrComp(pMachOSect->segname, "__DWARF"))
+            continue;
+
+        kHlpMemCopy(szTmp, pMachOSect->sectname, sizeof(pMachOSect->sectname));
+        szTmp[sizeof(pMachOSect->sectname)] = '\0';
+
+        rc = pfnCallback(pMod, iSect, KLDRDBGINFOTYPE_DWARF, 0, 0, szTmp,
+                         pModMachO->paSections[iSect].offFile,
+                         pModMachO->paSections[iSect].LinkAddress,
+                         pModMachO->paSections[iSect].cb,
+                         NULL, pvUser);
+        if (rc != 0)
+            break;
+    }
+
+    return rc;
+}
+
+
+/** @copydoc kLdrModHasDbgInfo */
+static int kldrModMachOHasDbgInfo(PKLDRMOD pMod, const void *pvBits)
+{
+    /*PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;*/
+
+#if 0
+    /*
+     * Base this entirely on the presence of a debug directory.
+     */
+    if (    pModMachO->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].Size
+            < sizeof(IMAGE_DEBUG_DIRECTORY) /* screw borland linkers */
+        ||  !pModMachO->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress)
+        return KLDR_ERR_NO_DEBUG_INFO;
+    return 0;
+#else
+    K_NOREF(pMod);
+    K_NOREF(pvBits);
+    return KLDR_ERR_NO_DEBUG_INFO;
+#endif
+}
+
+
+/** @copydoc kLdrModMap */
+static int kldrModMachOMap(PKLDRMOD pMod)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    unsigned fFixed;
+    KU32 i;
+    void *pvBase;
+    int rc;
+
+    if (!pModMachO->fCanLoad)
+        return KLDR_ERR_TODO;
+
+    /*
+     * Already mapped?
+     */
+    if (pModMachO->pvMapping)
+        return KLDR_ERR_ALREADY_MAPPED;
+
+    /*
+     * Map it.
+     */
+    /* fixed image? */
+    fFixed = pMod->enmType == KLDRTYPE_EXECUTABLE_FIXED
+          || pMod->enmType == KLDRTYPE_SHARED_LIBRARY_FIXED;
+    if (!fFixed)
+        pvBase = NULL;
+    else
+    {
+        pvBase = (void *)(KUPTR)pMod->aSegments[0].LinkAddress;
+        if ((KUPTR)pvBase != pMod->aSegments[0].LinkAddress)
+            return KLDR_ERR_ADDRESS_OVERFLOW;
+    }
+
+    /* try do the prepare */
+    rc = kRdrMap(pMod->pRdr, &pvBase, pMod->cSegments, pMod->aSegments, fFixed);
+    if (rc)
+        return rc;
+
+    /*
+     * Update the segments with their map addresses.
+     */
+    for (i = 0; i < pMod->cSegments; i++)
+    {
+        if (pMod->aSegments[i].RVA != NIL_KLDRADDR)
+            pMod->aSegments[i].MapAddress = (KUPTR)pvBase + (KUPTR)pMod->aSegments[i].RVA;
+    }
+    pModMachO->pvMapping = pvBase;
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModUnmap */
+static int kldrModMachOUnmap(PKLDRMOD pMod)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    KU32 i;
+    int rc;
+
+    /*
+     * Mapped?
+     */
+    if (!pModMachO->pvMapping)
+        return KLDR_ERR_NOT_MAPPED;
+
+    /*
+     * Try unmap the image.
+     */
+    rc = kRdrUnmap(pMod->pRdr, pModMachO->pvMapping, pMod->cSegments, pMod->aSegments);
+    if (rc)
+        return rc;
+
+    /*
+     * Update the segments to reflect that they aren't mapped any longer.
+     */
+    pModMachO->pvMapping = NULL;
+    for (i = 0; i < pMod->cSegments; i++)
+        pMod->aSegments[i].MapAddress = 0;
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModAllocTLS */
+static int kldrModMachOAllocTLS(PKLDRMOD pMod, void *pvMapping)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+
+    /*
+     * Mapped?
+     */
+    if (   pvMapping == KLDRMOD_INT_MAP
+        && !pModMachO->pvMapping )
+        return KLDR_ERR_NOT_MAPPED;
+    return 0;
+}
+
+
+/** @copydoc kLdrModFreeTLS */
+static void kldrModMachOFreeTLS(PKLDRMOD pMod, void *pvMapping)
+{
+    K_NOREF(pMod);
+    K_NOREF(pvMapping);
+}
+
+
+/** @copydoc kLdrModReload */
+static int kldrModMachOReload(PKLDRMOD pMod)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+
+    /*
+     * Mapped?
+     */
+    if (!pModMachO->pvMapping)
+        return KLDR_ERR_NOT_MAPPED;
+
+    /* the file provider does it all */
+    return kRdrRefresh(pMod->pRdr, pModMachO->pvMapping, pMod->cSegments, pMod->aSegments);
+}
+
+
+/** @copydoc kLdrModFixupMapping */
+static int kldrModMachOFixupMapping(PKLDRMOD pMod, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    int rc, rc2;
+
+    /*
+     * Mapped?
+     */
+    if (!pModMachO->pvMapping)
+        return KLDR_ERR_NOT_MAPPED;
+
+    /*
+     * Before doing anything we'll have to make all pages writable.
+     */
+    rc = kRdrProtect(pMod->pRdr, pModMachO->pvMapping, pMod->cSegments, pMod->aSegments, 1 /* unprotect */);
+    if (rc)
+        return rc;
+
+    /*
+     * Resolve imports and apply base relocations.
+     */
+    rc = kldrModMachORelocateBits(pMod, pModMachO->pvMapping, (KUPTR)pModMachO->pvMapping, pModMachO->LinkAddress,
+                                  pfnGetImport, pvUser);
+
+    /*
+     * Restore protection.
+     */
+    rc2 = kRdrProtect(pMod->pRdr, pModMachO->pvMapping, pMod->cSegments, pMod->aSegments, 0 /* protect */);
+    if (!rc && rc2)
+        rc = rc2;
+    return rc;
+}
+
+
+/**
+ * MH_OBJECT: Resolves undefined symbols (imports).
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pModMachO       The Mach-O module interpreter instance.
+ * @param   pfnGetImport    The callback for resolving an imported symbol.
+ * @param   pvUser          User argument to the callback.
+ */
+static int  kldrModMachOObjDoImports(PKLDRMODMACHO pModMachO, KLDRADDR BaseAddress, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    const KU32 cSyms = pModMachO->cSymbols;
+    KU32 iSym;
+    int rc;
+
+    /*
+     * Ensure that we've got the symbol table and section fixups handy.
+     */
+    rc = kldrModMachOLoadObjSymTab(pModMachO);
+    if (rc)
+        return rc;
+
+    /*
+     * Iterate the symbol table and resolve undefined symbols.
+     * We currently ignore REFERENCE_TYPE.
+     */
+    if (    pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE
+        ||  pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE_OE)
+    {
+        macho_nlist_32_t *paSyms = (macho_nlist_32_t *)pModMachO->pvaSymbols;
+        for (iSym = 0; iSym < cSyms; iSym++)
+        {
+            /* skip stabs */
+            if (paSyms[iSym].n_type & MACHO_N_STAB)
+                continue;
+
+            if ((paSyms[iSym].n_type & MACHO_N_TYPE) == MACHO_N_UNDF)
+            {
+                const char *pszSymbol;
+                KSIZE cchSymbol;
+                KU32 fKind = KLDRSYMKIND_REQ_FLAT;
+                KLDRADDR Value = NIL_KLDRADDR;
+
+                /** @todo Implement N_REF_TO_WEAK. */
+                KLDRMODMACHO_CHECK_RETURN(!(paSyms[iSym].n_desc & N_REF_TO_WEAK), KLDR_ERR_TODO);
+
+                /* Get the symbol name. */
+                KLDRMODMACHO_CHECK_RETURN((KU32)paSyms[iSym].n_un.n_strx < pModMachO->cchStrings, KLDR_ERR_MACHO_BAD_SYMBOL);
+                pszSymbol = &pModMachO->pchStrings[paSyms[iSym].n_un.n_strx];
+                cchSymbol = kHlpStrLen(pszSymbol);
+
+                /* Check for linker defined symbols relating to sections and segments. */
+                if (   cchSymbol > sizeof("section$end$") - 1
+                    && *pszSymbol == 's'
+                    && kHlpMemChr(pszSymbol, '$', cchSymbol))
+                    rc = kldrModMachOQueryLinkerSymbol(pModMachO, pModMachO->pMod, pszSymbol, cchSymbol, BaseAddress, &Value);
+                else
+                    rc = KLDR_ERR_SYMBOL_NOT_FOUND;
+
+                /* Ask the user for an address to the symbol. */
+                if (rc)
+                    rc = pfnGetImport(pModMachO->pMod, NIL_KLDRMOD_IMPORT, iSym, pszSymbol, cchSymbol, NULL,
+                                      &Value, &fKind, pvUser);
+                if (rc)
+                {
+                    /* weak reference? */
+                    if (!(paSyms[iSym].n_desc & N_WEAK_REF))
+                        break;
+                    Value = 0;
+                }
+
+                /* Update the symbol. */
+                paSyms[iSym].n_value = (KU32)Value;
+                if (paSyms[iSym].n_value != Value)
+                {
+                    rc = KLDR_ERR_ADDRESS_OVERFLOW;
+                    break;
+                }
+            }
+            else if (paSyms[iSym].n_desc & N_WEAK_DEF)
+            {
+                /** @todo implement weak symbols. */
+                /*return KLDR_ERR_TODO; - ignored for now. */
+            }
+        }
+    }
+    else
+    {
+        /* (Identical to the 32-bit code, just different paSym type. (and n_strx is unsigned)) */
+        macho_nlist_64_t *paSyms = (macho_nlist_64_t *)pModMachO->pvaSymbols;
+        for (iSym = 0; iSym < cSyms; iSym++)
+        {
+            /* skip stabs */
+            if (paSyms[iSym].n_type & MACHO_N_STAB)
+                continue;
+
+            if ((paSyms[iSym].n_type & MACHO_N_TYPE) == MACHO_N_UNDF)
+            {
+                const char *pszSymbol;
+                KSIZE cchSymbol;
+                KU32 fKind = KLDRSYMKIND_REQ_FLAT;
+                KLDRADDR Value = NIL_KLDRADDR;
+
+                /** @todo Implement N_REF_TO_WEAK. */
+                KLDRMODMACHO_CHECK_RETURN(!(paSyms[iSym].n_desc & N_REF_TO_WEAK), KLDR_ERR_TODO);
+
+                 /* Get the symbol name. */
+                KLDRMODMACHO_CHECK_RETURN(paSyms[iSym].n_un.n_strx < pModMachO->cchStrings, KLDR_ERR_MACHO_BAD_SYMBOL);
+                pszSymbol = &pModMachO->pchStrings[paSyms[iSym].n_un.n_strx];
+                cchSymbol = kHlpStrLen(pszSymbol);
+
+                /* Check for linker defined symbols relating to sections and segments. */
+                if (   cchSymbol > sizeof("section$end$") - 1
+                    && *pszSymbol == 's'
+                    && kHlpMemChr(pszSymbol, '$', cchSymbol))
+                    rc = kldrModMachOQueryLinkerSymbol(pModMachO, pModMachO->pMod, pszSymbol, cchSymbol, BaseAddress, &Value);
+                else
+                    rc = KLDR_ERR_SYMBOL_NOT_FOUND;
+
+                /* Ask the user for an address to the symbol. */
+                if (rc)
+                    rc = pfnGetImport(pModMachO->pMod, NIL_KLDRMOD_IMPORT, iSym, pszSymbol, cchSymbol, NULL,
+                                      &Value, &fKind, pvUser);
+                if (rc)
+                {
+                    /* weak reference? */
+                    if (!(paSyms[iSym].n_desc & N_WEAK_REF))
+                        break;
+                    Value = 0;
+                }
+
+                /* Update the symbol. */
+                paSyms[iSym].n_value = Value;
+                if (paSyms[iSym].n_value != Value)
+                {
+                    rc = KLDR_ERR_ADDRESS_OVERFLOW;
+                    break;
+                }
+            }
+            else if (paSyms[iSym].n_desc & N_WEAK_DEF)
+            {
+                /** @todo implement weak symbols. */
+                /*return KLDR_ERR_TODO; - ignored for now. */
+            }
+        }
+    }
+
+    return rc;
+}
+
+
+/**
+ * MH_OBJECT: Applies base relocations to a (unprotected) image mapping.
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pModMachO       The Mach-O module interpreter instance.
+ * @param   pvMapping       The mapping to fixup.
+ * @param   NewBaseAddress  The address to fixup the mapping to.
+ * @param   OldBaseAddress  The address the mapping is currently fixed up to.
+ */
+static int  kldrModMachOObjDoFixups(PKLDRMODMACHO pModMachO, void *pvMapping, KLDRADDR NewBaseAddress)
+{
+    KU32 iSeg;
+    int rc;
+
+
+    /*
+     * Ensure that we've got the symbol table and section fixups handy.
+     */
+    rc = kldrModMachOLoadObjSymTab(pModMachO);
+    if (rc)
+        return rc;
+
+    /*
+     * Iterate over the segments and their sections and apply fixups.
+     */
+    for (iSeg = rc = 0; !rc && iSeg < pModMachO->pMod->cSegments; iSeg++)
+    {
+        PKLDRMODMACHOSEG pSeg = &pModMachO->aSegments[iSeg];
+        KU32 iSect;
+
+        for (iSect = 0; iSect < pSeg->cSections; iSect++)
+        {
+            PKLDRMODMACHOSECT pSect = &pSeg->paSections[iSect];
+            KU8 *pbSectBits;
+
+            /* skip sections without fixups. */
+            if (!pSect->cFixups)
+                continue;
+
+            /* lazy load (and endian convert) the fixups. */
+            if (!pSect->paFixups)
+            {
+                rc = kldrModMachOLoadFixups(pModMachO, pSect->offFixups, pSect->cFixups, &pSect->paFixups);
+                if (rc)
+                    break;
+            }
+
+            /*
+             * Apply the fixups.
+             */
+            pbSectBits = (KU8 *)pvMapping + (KUPTR)pSect->RVA;
+            if (pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE) /** @todo this aint right. */
+                rc = kldrModMachOFixupSectionGeneric32Bit(pModMachO, pbSectBits, pSect,
+                                                          (macho_nlist_32_t *)pModMachO->pvaSymbols,
+                                                          pModMachO->cSymbols, NewBaseAddress);
+            else if (   pModMachO->Hdr.magic == IMAGE_MACHO64_SIGNATURE
+                     && pModMachO->Hdr.cputype == CPU_TYPE_X86_64)
+                rc = kldrModMachOFixupSectionAMD64(pModMachO, pbSectBits, pSect,
+                                                   (macho_nlist_64_t *)pModMachO->pvaSymbols,
+                                                   pModMachO->cSymbols, NewBaseAddress);
+            else
+                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_TODO);
+            if (rc)
+                break;
+        }
+    }
+
+    return rc;
+}
+
+
+/**
+ * Applies generic fixups to a section in an image of the same endian-ness
+ * as the host CPU.
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pModMachO       The Mach-O module interpreter instance.
+ * @param   pbSectBits      Pointer to the section bits.
+ * @param   pFixupSect      The section being fixed up.
+ * @param   NewBaseAddress  The new base image address.
+ */
+static int  kldrModMachOFixupSectionGeneric32Bit(PKLDRMODMACHO pModMachO, KU8 *pbSectBits, PKLDRMODMACHOSECT pFixupSect,
+                                                 macho_nlist_32_t *paSyms, KU32 cSyms, KLDRADDR NewBaseAddress)
+{
+    const macho_relocation_info_t *paFixups = pFixupSect->paFixups;
+    const KU32 cFixups = pFixupSect->cFixups;
+    KSIZE cbSectBits = (KSIZE)pFixupSect->cb;
+    const KU8 *pbSectVirginBits;
+    KU32 iFixup;
+    KLDRPU uFixVirgin;
+    KLDRPU uFix;
+    KLDRADDR SymAddr = ~(KLDRADDR)0;
+    int rc;
+
+    /*
+     * Find the virgin bits.
+     */
+    if (pFixupSect->offFile != -1)
+    {
+        rc = kldrModMachOMapVirginBits(pModMachO);
+        if (rc)
+            return rc;
+        pbSectVirginBits = (const KU8 *)pModMachO->pvBits + pFixupSect->offFile;
+    }
+    else
+        pbSectVirginBits = NULL;
+
+    /*
+     * Iterate the fixups and apply them.
+     */
+    for (iFixup = 0; iFixup < cFixups; iFixup++)
+    {
+        union
+        {
+            macho_relocation_info_t     r;
+            scattered_relocation_info_t s;
+        } Fixup;
+        Fixup.r = paFixups[iFixup];
+
+        if (!(Fixup.r.r_address & R_SCATTERED))
+        {
+            /* sanity */
+            if ((KU32)Fixup.r.r_address >= cbSectBits)
+                return KLDR_ERR_BAD_FIXUP;
+
+            /* calc fixup addresses. */
+            uFix.pv = pbSectBits + Fixup.r.r_address;
+            uFixVirgin.pv = pbSectVirginBits ? (KU8 *)pbSectVirginBits + Fixup.r.r_address : 0;
+
+            /*
+             * Calc the symbol value.
+             */
+            /* Calc the linked symbol address / addend. */
+            switch (Fixup.r.r_length)
+            {
+                /** @todo Deal with unaligned accesses on non x86 platforms. */
+                case 0: SymAddr = *uFixVirgin.pi8; break;
+                case 1: SymAddr = *uFixVirgin.pi16; break;
+                case 2: SymAddr = *uFixVirgin.pi32; break;
+                case 3: SymAddr = *uFixVirgin.pi64; break;
+            }
+            if (Fixup.r.r_pcrel)
+                SymAddr += Fixup.r.r_address + pFixupSect->LinkAddress;
+
+            /* Add symbol / section address. */
+            if (Fixup.r.r_extern)
+            {
+                const macho_nlist_32_t *pSym;
+                if (Fixup.r.r_symbolnum >= cSyms)
+                    return KLDR_ERR_BAD_FIXUP;
+                pSym = &paSyms[Fixup.r.r_symbolnum];
+
+                if (pSym->n_type & MACHO_N_STAB)
+                    return KLDR_ERR_BAD_FIXUP;
+
+                switch (pSym->n_type & MACHO_N_TYPE)
+                {
+                    case MACHO_N_SECT:
+                    {
+                        PKLDRMODMACHOSECT pSymSect;
+                        KLDRMODMACHO_CHECK_RETURN((KU32)pSym->n_sect - 1 <= pModMachO->cSections, KLDR_ERR_MACHO_BAD_SYMBOL);
+                        pSymSect = &pModMachO->paSections[pSym->n_sect - 1];
+
+                        SymAddr += pSym->n_value - pSymSect->LinkAddress + pSymSect->RVA + NewBaseAddress;
+                        break;
+                    }
+
+                    case MACHO_N_UNDF:
+                    case MACHO_N_ABS:
+                        SymAddr += pSym->n_value;
+                        break;
+
+                    case MACHO_N_INDR:
+                    case MACHO_N_PBUD:
+                        KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_TODO);
+                    default:
+                        KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_SYMBOL);
+                }
+            }
+            else if (Fixup.r.r_symbolnum != R_ABS)
+            {
+                PKLDRMODMACHOSECT pSymSect;
+                if (Fixup.r.r_symbolnum > pModMachO->cSections)
+                    return KLDR_ERR_BAD_FIXUP;
+                pSymSect = &pModMachO->paSections[Fixup.r.r_symbolnum - 1];
+
+                SymAddr -= pSymSect->LinkAddress;
+                SymAddr += pSymSect->RVA + NewBaseAddress;
+            }
+
+            /* adjust for PC relative */
+            if (Fixup.r.r_pcrel)
+                SymAddr -= Fixup.r.r_address + pFixupSect->RVA + NewBaseAddress;
+        }
+        else
+        {
+            PKLDRMODMACHOSECT pSymSect;
+            KU32 iSymSect;
+            KLDRADDR Value;
+
+            /* sanity */
+            KLDRMODMACHO_ASSERT(Fixup.s.r_scattered);
+            if ((KU32)Fixup.s.r_address >= cbSectBits)
+                return KLDR_ERR_BAD_FIXUP;
+
+            /* calc fixup addresses. */
+            uFix.pv = pbSectBits + Fixup.s.r_address;
+            uFixVirgin.pv = pbSectVirginBits ? (KU8 *)pbSectVirginBits + Fixup.s.r_address : 0;
+
+            /*
+             * Calc the symbol value.
+             */
+            /* The addend is stored in the code. */
+            switch (Fixup.s.r_length)
+            {
+                case 0: SymAddr = *uFixVirgin.pi8; break;
+                case 1: SymAddr = *uFixVirgin.pi16; break;
+                case 2: SymAddr = *uFixVirgin.pi32; break;
+                case 3: SymAddr = *uFixVirgin.pi64; break;
+            }
+            if (Fixup.s.r_pcrel)
+                SymAddr += Fixup.s.r_address;
+            Value = Fixup.s.r_value;
+            SymAddr -= Value;                   /* (-> addend only) */
+
+            /* Find the section number from the r_value. */
+            pSymSect = NULL;
+            for (iSymSect = 0; iSymSect < pModMachO->cSections; iSymSect++)
+            {
+                KLDRADDR off = Value - pModMachO->paSections[iSymSect].LinkAddress;
+                if (off < pModMachO->paSections[iSymSect].cb)
+                {
+                    pSymSect = &pModMachO->paSections[iSymSect];
+                    break;
+                }
+                else if (off == pModMachO->paSections[iSymSect].cb) /* edge case */
+                    pSymSect = &pModMachO->paSections[iSymSect];
+            }
+            if (!pSymSect)
+                return KLDR_ERR_BAD_FIXUP;
+
+            /* Calc the symbol address. */
+            SymAddr += Value - pSymSect->LinkAddress + pSymSect->RVA + NewBaseAddress;
+            if (Fixup.s.r_pcrel)
+                SymAddr -= Fixup.s.r_address + pFixupSect->RVA + NewBaseAddress;
+
+            Fixup.r.r_length = ((scattered_relocation_info_t *)&paFixups[iFixup])->r_length;
+            Fixup.r.r_type   = ((scattered_relocation_info_t *)&paFixups[iFixup])->r_type;
+        }
+
+        /*
+         * Write back the fixed up value.
+         */
+        if (Fixup.r.r_type == GENERIC_RELOC_VANILLA)
+        {
+            switch (Fixup.r.r_length)
+            {
+                case 0: *uFix.pu8  = (KU8)SymAddr; break;
+                case 1: *uFix.pu16 = (KU16)SymAddr; break;
+                case 2: *uFix.pu32 = (KU32)SymAddr; break;
+                case 3: *uFix.pu64 = (KU64)SymAddr; break;
+            }
+        }
+        else if (Fixup.r.r_type <= GENERIC_RELOC_LOCAL_SECTDIFF)
+            return KLDR_ERR_MACHO_UNSUPPORTED_FIXUP_TYPE;
+        else
+            return KLDR_ERR_BAD_FIXUP;
+    }
+
+    return 0;
+}
+
+
+/**
+ * Applies AMD64 fixups to a section.
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pModMachO       The Mach-O module interpreter instance.
+ * @param   pbSectBits      Pointer to the section bits.
+ * @param   pFixupSect      The section being fixed up.
+ * @param   NewBaseAddress  The new base image address.
+ */
+static int  kldrModMachOFixupSectionAMD64(PKLDRMODMACHO pModMachO, KU8 *pbSectBits, PKLDRMODMACHOSECT pFixupSect,
+                                          macho_nlist_64_t *paSyms, KU32 cSyms, KLDRADDR NewBaseAddress)
+{
+    const macho_relocation_info_t *paFixups = pFixupSect->paFixups;
+    const KU32 cFixups = pFixupSect->cFixups;
+    KSIZE cbSectBits = (KSIZE)pFixupSect->cb;
+    const KU8 *pbSectVirginBits;
+    KU32 iFixup;
+    KLDRPU uFixVirgin;
+    KLDRPU uFix;
+    KLDRADDR SymAddr;
+    int rc;
+
+    /*
+     * Find the virgin bits.
+     */
+    if (pFixupSect->offFile != -1)
+    {
+        rc = kldrModMachOMapVirginBits(pModMachO);
+        if (rc)
+            return rc;
+        pbSectVirginBits = (const KU8 *)pModMachO->pvBits + pFixupSect->offFile;
+    }
+    else
+        pbSectVirginBits = NULL;
+
+    /*
+     * Iterate the fixups and apply them.
+     */
+    for (iFixup = 0; iFixup < cFixups; iFixup++)
+    {
+        union
+        {
+            macho_relocation_info_t     r;
+            scattered_relocation_info_t s;
+        } Fixup;
+        Fixup.r = paFixups[iFixup];
+
+        /* AMD64 doesn't use scattered fixups. */
+        KLDRMODMACHO_CHECK_RETURN(!(Fixup.r.r_address & R_SCATTERED), KLDR_ERR_BAD_FIXUP);
+
+        /* sanity */
+        KLDRMODMACHO_CHECK_RETURN((KU32)Fixup.r.r_address < cbSectBits, KLDR_ERR_BAD_FIXUP);
+
+        /* calc fixup addresses. */
+        uFix.pv = pbSectBits + Fixup.r.r_address;
+        uFixVirgin.pv = pbSectVirginBits ? (KU8 *)pbSectVirginBits + Fixup.r.r_address : 0;
+
+        /*
+         * Calc the symbol value.
+         */
+        /* Calc the linked symbol address / addend. */
+        switch (Fixup.r.r_length)
+        {
+            /** @todo Deal with unaligned accesses on non x86 platforms. */
+            case 2: SymAddr = *uFixVirgin.pi32; break;
+            case 3: SymAddr = *uFixVirgin.pi64; break;
+            default:
+                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_BAD_FIXUP);
+        }
+
+        /* Add symbol / section address. */
+        if (Fixup.r.r_extern)
+        {
+            const macho_nlist_64_t *pSym;
+
+            KLDRMODMACHO_CHECK_RETURN(Fixup.r.r_symbolnum < cSyms, KLDR_ERR_BAD_FIXUP);
+            pSym = &paSyms[Fixup.r.r_symbolnum];
+            KLDRMODMACHO_CHECK_RETURN(!(pSym->n_type & MACHO_N_STAB), KLDR_ERR_BAD_FIXUP);
+
+            switch (Fixup.r.r_type)
+            {
+                /* GOT references just needs to have their symbol verified.
+                   Later, we'll optimize GOT building here using a parallel sym->got array. */
+                case X86_64_RELOC_GOT_LOAD:
+                case X86_64_RELOC_GOT:
+                    switch (pSym->n_type & MACHO_N_TYPE)
+                    {
+                        case MACHO_N_SECT:
+                        case MACHO_N_UNDF:
+                        case MACHO_N_ABS:
+                            break;
+                        case MACHO_N_INDR:
+                        case MACHO_N_PBUD:
+                            KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_TODO);
+                        default:
+                            KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_SYMBOL);
+                    }
+                    SymAddr = sizeof(KU64) * Fixup.r.r_symbolnum + pModMachO->GotRVA + NewBaseAddress;
+                    KLDRMODMACHO_CHECK_RETURN(Fixup.r.r_length == 2, KLDR_ERR_BAD_FIXUP);
+                    SymAddr -= 4;
+                    break;
+
+                /* Verify the r_pcrel field for signed fixups on the way into the default case. */
+                case X86_64_RELOC_BRANCH:
+                case X86_64_RELOC_SIGNED:
+                case X86_64_RELOC_SIGNED_1:
+                case X86_64_RELOC_SIGNED_2:
+                case X86_64_RELOC_SIGNED_4:
+                    KLDRMODMACHO_CHECK_RETURN(Fixup.r.r_pcrel, KLDR_ERR_BAD_FIXUP);
+                    /* Falls through. */
+                default:
+                {
+                    /* Adjust with fixup specific addend and vierfy unsigned/r_pcrel. */
+                    switch (Fixup.r.r_type)
+                    {
+                        case X86_64_RELOC_UNSIGNED:
+                            KLDRMODMACHO_CHECK_RETURN(!Fixup.r.r_pcrel, KLDR_ERR_BAD_FIXUP);
+                            break;
+                        case X86_64_RELOC_BRANCH:
+                            KLDRMODMACHO_CHECK_RETURN(Fixup.r.r_length == 2, KLDR_ERR_BAD_FIXUP);
+                            SymAddr -= 4;
+                            break;
+                        case X86_64_RELOC_SIGNED:
+                        case X86_64_RELOC_SIGNED_1:
+                        case X86_64_RELOC_SIGNED_2:
+                        case X86_64_RELOC_SIGNED_4:
+                            SymAddr -= 4;
+                            break;
+                        default:
+                            KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_BAD_FIXUP);
+                    }
+
+                    switch (pSym->n_type & MACHO_N_TYPE)
+                    {
+                        case MACHO_N_SECT:
+                        {
+                            PKLDRMODMACHOSECT pSymSect;
+                            KLDRMODMACHO_CHECK_RETURN((KU32)pSym->n_sect - 1 <= pModMachO->cSections, KLDR_ERR_MACHO_BAD_SYMBOL);
+                            pSymSect = &pModMachO->paSections[pSym->n_sect - 1];
+                            SymAddr += pSym->n_value - pSymSect->LinkAddress + pSymSect->RVA + NewBaseAddress;
+                            break;
+                        }
+
+                        case MACHO_N_UNDF:
+                            /* branch to an external symbol may have to take a short detour. */
+                            if (   Fixup.r.r_type == X86_64_RELOC_BRANCH
+                                &&       SymAddr + Fixup.r.r_address + pFixupSect->RVA + NewBaseAddress
+                                       - pSym->n_value
+                                       + KU64_C(0x80000000)
+                                    >= KU64_C(0xffffff20))
+                                SymAddr += pModMachO->cbJmpStub * Fixup.r.r_symbolnum + pModMachO->JmpStubsRVA + NewBaseAddress;
+                            else
+                                SymAddr += pSym->n_value;
+                            break;
+
+                        case MACHO_N_ABS:
+                            SymAddr += pSym->n_value;
+                            break;
+
+                        case MACHO_N_INDR:
+                        case MACHO_N_PBUD:
+                            KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_TODO);
+                        default:
+                            KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_SYMBOL);
+                    }
+                    break;
+                }
+
+                /*
+                 * This is a weird customer, it will always be follows by an UNSIGNED fixup.
+                 */
+                case X86_64_RELOC_SUBTRACTOR:
+                {
+                    macho_relocation_info_t Fixup2;
+
+                    /* Deal with the SUBTRACT symbol first, by subtracting it from SymAddr. */
+                    switch (pSym->n_type & MACHO_N_TYPE)
+                    {
+                        case MACHO_N_SECT:
+                        {
+                            PKLDRMODMACHOSECT pSymSect;
+                            KLDRMODMACHO_CHECK_RETURN((KU32)pSym->n_sect - 1 <= pModMachO->cSections, KLDR_ERR_MACHO_BAD_SYMBOL);
+                            pSymSect = &pModMachO->paSections[pSym->n_sect - 1];
+                            SymAddr -= pSym->n_value - pSymSect->LinkAddress + pSymSect->RVA + NewBaseAddress;
+                            break;
+                        }
+
+                        case MACHO_N_UNDF:
+                        case MACHO_N_ABS:
+                            SymAddr -= pSym->n_value;
+                            break;
+
+                        case MACHO_N_INDR:
+                        case MACHO_N_PBUD:
+                            KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_TODO);
+                        default:
+                            KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_SYMBOL);
+                    }
+
+                    /* Load the 2nd fixup, check sanity. */
+                    iFixup++;
+                    KLDRMODMACHO_CHECK_RETURN(!Fixup.r.r_pcrel && iFixup < cFixups, KLDR_ERR_BAD_FIXUP);
+                    Fixup2 = paFixups[iFixup];
+                    KLDRMODMACHO_CHECK_RETURN(   Fixup2.r_address == Fixup.r.r_address
+                                              && Fixup2.r_length == Fixup.r.r_length
+                                              && Fixup2.r_type == X86_64_RELOC_UNSIGNED
+                                              && !Fixup2.r_pcrel
+                                              && Fixup2.r_symbolnum < cSyms,
+                                              KLDR_ERR_BAD_FIXUP);
+
+                    if (Fixup2.r_extern)
+                    {
+                        KLDRMODMACHO_CHECK_RETURN(Fixup2.r_symbolnum < cSyms, KLDR_ERR_BAD_FIXUP);
+                        pSym = &paSyms[Fixup2.r_symbolnum];
+                        KLDRMODMACHO_CHECK_RETURN(!(pSym->n_type & MACHO_N_STAB), KLDR_ERR_BAD_FIXUP);
+
+                        /* Add it's value to SymAddr. */
+                        switch (pSym->n_type & MACHO_N_TYPE)
+                        {
+                            case MACHO_N_SECT:
+                            {
+                                PKLDRMODMACHOSECT pSymSect;
+                                KLDRMODMACHO_CHECK_RETURN((KU32)pSym->n_sect - 1 <= pModMachO->cSections, KLDR_ERR_MACHO_BAD_SYMBOL);
+                                pSymSect = &pModMachO->paSections[pSym->n_sect - 1];
+                                SymAddr += pSym->n_value - pSymSect->LinkAddress + pSymSect->RVA + NewBaseAddress;
+                                break;
+                            }
+
+                            case MACHO_N_UNDF:
+                            case MACHO_N_ABS:
+                                SymAddr += pSym->n_value;
+                                break;
+
+                            case MACHO_N_INDR:
+                            case MACHO_N_PBUD:
+                                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_TODO);
+                            default:
+                                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_MACHO_BAD_SYMBOL);
+                        }
+                    }
+                    else if (Fixup2.r_symbolnum != R_ABS)
+                    {
+                        PKLDRMODMACHOSECT pSymSect;
+                        KLDRMODMACHO_CHECK_RETURN(Fixup2.r_symbolnum <= pModMachO->cSections, KLDR_ERR_BAD_FIXUP);
+                        pSymSect = &pModMachO->paSections[Fixup2.r_symbolnum - 1];
+                        SymAddr += pSymSect->RVA + NewBaseAddress;
+                    }
+                    else
+                        KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_BAD_FIXUP);
+                }
+                break;
+            }
+        }
+        else
+        {
+            /* verify against fixup type and make adjustments */
+            switch (Fixup.r.r_type)
+            {
+                case X86_64_RELOC_UNSIGNED:
+                    KLDRMODMACHO_CHECK_RETURN(!Fixup.r.r_pcrel, KLDR_ERR_BAD_FIXUP);
+                    break;
+                case X86_64_RELOC_BRANCH:
+                    KLDRMODMACHO_CHECK_RETURN(Fixup.r.r_pcrel, KLDR_ERR_BAD_FIXUP);
+                    SymAddr += 4; /* dunno what the assmbler/linker really is doing here... */
+                    break;
+                case X86_64_RELOC_SIGNED:
+                case X86_64_RELOC_SIGNED_1:
+                case X86_64_RELOC_SIGNED_2:
+                case X86_64_RELOC_SIGNED_4:
+                    KLDRMODMACHO_CHECK_RETURN(Fixup.r.r_pcrel, KLDR_ERR_BAD_FIXUP);
+                    break;
+                /*case X86_64_RELOC_GOT_LOAD:*/
+                /*case X86_64_RELOC_GOT: */
+                /*case X86_64_RELOC_SUBTRACTOR: - must be r_extern=1 says as. */
+                default:
+                    KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_BAD_FIXUP);
+            }
+            if (Fixup.r.r_symbolnum != R_ABS)
+            {
+                PKLDRMODMACHOSECT pSymSect;
+                KLDRMODMACHO_CHECK_RETURN(Fixup.r.r_symbolnum <= pModMachO->cSections, KLDR_ERR_BAD_FIXUP);
+                pSymSect = &pModMachO->paSections[Fixup.r.r_symbolnum - 1];
+
+                SymAddr -= pSymSect->LinkAddress;
+                SymAddr += pSymSect->RVA + NewBaseAddress;
+                if (Fixup.r.r_pcrel)
+                    SymAddr += Fixup.r.r_address;
+            }
+        }
+
+        /* adjust for PC relative */
+        if (Fixup.r.r_pcrel)
+            SymAddr -= Fixup.r.r_address + pFixupSect->RVA + NewBaseAddress;
+
+        /*
+         * Write back the fixed up value.
+         */
+        switch (Fixup.r.r_length)
+        {
+            case 3:
+                *uFix.pu64 = (KU64)SymAddr;
+                break;
+            case 2:
+                KLDRMODMACHO_CHECK_RETURN(Fixup.r.r_pcrel || Fixup.r.r_type == X86_64_RELOC_SUBTRACTOR, KLDR_ERR_BAD_FIXUP);
+                KLDRMODMACHO_CHECK_RETURN((KI32)SymAddr == (KI64)SymAddr, KLDR_ERR_ADDRESS_OVERFLOW);
+                *uFix.pu32 = (KU32)SymAddr;
+                break;
+            default:
+                KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_BAD_FIXUP);
+        }
+    }
+
+    return 0;
+}
+
+
+/**
+ * Loads the symbol table for a MH_OBJECT file.
+ *
+ * The symbol table is pointed to by KLDRMODMACHO::pvaSymbols.
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pModMachO       The Mach-O module interpreter instance.
+ */
+static int  kldrModMachOLoadObjSymTab(PKLDRMODMACHO pModMachO)
+{
+    int rc = 0;
+
+    if (    !pModMachO->pvaSymbols
+        &&  pModMachO->cSymbols)
+    {
+        KSIZE cbSyms;
+        KSIZE cbSym;
+        void *pvSyms;
+        void *pvStrings;
+
+        /* sanity */
+        KLDRMODMACHO_CHECK_RETURN(   pModMachO->offSymbols
+                                  && (!pModMachO->cchStrings || pModMachO->offStrings),
+                                  KLDR_ERR_MACHO_BAD_OBJECT_FILE);
+
+        /* allocate */
+        cbSym = pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE
+             || pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE_OE
+             ? sizeof(macho_nlist_32_t)
+             : sizeof(macho_nlist_64_t);
+        cbSyms = pModMachO->cSymbols * cbSym;
+        KLDRMODMACHO_CHECK_RETURN(cbSyms / cbSym == pModMachO->cSymbols, KLDR_ERR_SIZE_OVERFLOW);
+        rc = KERR_NO_MEMORY;
+        pvSyms = kHlpAlloc(cbSyms);
+        if (pvSyms)
+        {
+            if (pModMachO->cchStrings)
+                pvStrings = kHlpAlloc(pModMachO->cchStrings);
+            else
+                pvStrings = kHlpAllocZ(4);
+            if (pvStrings)
+            {
+                /* read */
+                rc = kRdrRead(pModMachO->pMod->pRdr, pvSyms, cbSyms, pModMachO->offSymbols);
+                if (!rc && pModMachO->cchStrings)
+                    rc = kRdrRead(pModMachO->pMod->pRdr, pvStrings, pModMachO->cchStrings, pModMachO->offStrings);
+                if (!rc)
+                {
+                    pModMachO->pvaSymbols = pvSyms;
+                    pModMachO->pchStrings = (char *)pvStrings;
+
+                    /* perform endian conversion? */
+                    if (pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE_OE)
+                    {
+                        KU32 cLeft = pModMachO->cSymbols;
+                        macho_nlist_32_t *pSym = (macho_nlist_32_t *)pvSyms;
+                        while (cLeft-- > 0)
+                        {
+                            pSym->n_un.n_strx = K_E2E_U32(pSym->n_un.n_strx);
+                            pSym->n_desc = (KI16)K_E2E_U16(pSym->n_desc);
+                            pSym->n_value = K_E2E_U32(pSym->n_value);
+                            pSym++;
+                        }
+                    }
+                    else if (pModMachO->Hdr.magic == IMAGE_MACHO64_SIGNATURE_OE)
+                    {
+                        KU32 cLeft = pModMachO->cSymbols;
+                        macho_nlist_64_t *pSym = (macho_nlist_64_t *)pvSyms;
+                        while (cLeft-- > 0)
+                        {
+                            pSym->n_un.n_strx = K_E2E_U32(pSym->n_un.n_strx);
+                            pSym->n_desc = (KI16)K_E2E_U16(pSym->n_desc);
+                            pSym->n_value = K_E2E_U64(pSym->n_value);
+                            pSym++;
+                        }
+                    }
+
+                    return 0;
+                }
+                kHlpFree(pvStrings);
+            }
+            kHlpFree(pvSyms);
+        }
+    }
+    else
+        KLDRMODMACHO_ASSERT(pModMachO->pchStrings || pModMachO->Hdr.filetype == MH_DSYM);
+
+    return rc;
+}
+
+
+/**
+ * Loads the fixups at the given address and performs endian
+ * conversion if necessary.
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pModMachO       The Mach-O module interpreter instance.
+ * @param   offFixups       The file offset of the fixups.
+ * @param   cFixups         The number of fixups to load.
+ * @param   ppaFixups       Where to put the pointer to the allocated fixup array.
+ */
+static int  kldrModMachOLoadFixups(PKLDRMODMACHO pModMachO, KLDRFOFF offFixups, KU32 cFixups, macho_relocation_info_t **ppaFixups)
+{
+    macho_relocation_info_t *paFixups;
+    KSIZE cbFixups;
+    int rc;
+
+    /* allocate the memory. */
+    cbFixups = cFixups * sizeof(*paFixups);
+    KLDRMODMACHO_CHECK_RETURN(cbFixups / sizeof(*paFixups) == cFixups, KLDR_ERR_SIZE_OVERFLOW);
+    paFixups = (macho_relocation_info_t *)kHlpAlloc(cbFixups);
+    if (!paFixups)
+        return KERR_NO_MEMORY;
+
+    /* read the fixups. */
+    rc = kRdrRead(pModMachO->pMod->pRdr, paFixups, cbFixups, offFixups);
+    if (!rc)
+    {
+        *ppaFixups = paFixups;
+
+        /* do endian conversion if necessary. */
+        if (    pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE_OE
+            ||  pModMachO->Hdr.magic == IMAGE_MACHO64_SIGNATURE_OE)
+        {
+            KU32 iFixup;
+            for (iFixup = 0; iFixup < cFixups; iFixup++)
+            {
+                KU32 *pu32 = (KU32 *)&paFixups[iFixup];
+                pu32[0] = K_E2E_U32(pu32[0]);
+                pu32[1] = K_E2E_U32(pu32[1]);
+            }
+        }
+    }
+    else
+        kHlpFree(paFixups);
+    return rc;
+}
+
+
+/**
+ * Maps the virgin file bits into memory if not already done.
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pModMachO       The Mach-O module interpreter instance.
+ */
+static int kldrModMachOMapVirginBits(PKLDRMODMACHO pModMachO)
+{
+    int rc = 0;
+    if (!pModMachO->pvBits)
+        rc = kRdrAllMap(pModMachO->pMod->pRdr, &pModMachO->pvBits);
+    return rc;
+}
+
+
+/** @copydoc kLdrModCallInit */
+static int kldrModMachOCallInit(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle)
+{
+    /* later */
+    K_NOREF(pMod);
+    K_NOREF(pvMapping);
+    K_NOREF(uHandle);
+    return 0;
+}
+
+
+/** @copydoc kLdrModCallTerm */
+static int kldrModMachOCallTerm(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle)
+{
+    /* later */
+    K_NOREF(pMod);
+    K_NOREF(pvMapping);
+    K_NOREF(uHandle);
+    return 0;
+}
+
+
+/** @copydoc kLdrModCallThread */
+static int kldrModMachOCallThread(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle, unsigned fAttachingOrDetaching)
+{
+    /* Relevant for Mach-O? */
+    K_NOREF(pMod);
+    K_NOREF(pvMapping);
+    K_NOREF(uHandle);
+    K_NOREF(fAttachingOrDetaching);
+    return 0;
+}
+
+
+/** @copydoc kLdrModSize */
+static KLDRADDR kldrModMachOSize(PKLDRMOD pMod)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    return pModMachO->cbImage;
+}
+
+
+/** @copydoc kLdrModGetBits */
+static int kldrModMachOGetBits(PKLDRMOD pMod, void *pvBits, KLDRADDR BaseAddress, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    PKLDRMODMACHO  pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    KU32        i;
+    int         rc;
+
+    if (!pModMachO->fCanLoad)
+        return KLDR_ERR_TODO;
+
+    /*
+     * Zero the entire buffer first to simplify things.
+     */
+    kHlpMemSet(pvBits, 0, (KSIZE)pModMachO->cbImage);
+
+    /*
+     * When possible use the segment table to load the data.
+     */
+    for (i = 0; i < pMod->cSegments; i++)
+    {
+        /* skip it? */
+        if (    pMod->aSegments[i].cbFile == -1
+            ||  pMod->aSegments[i].offFile == -1
+            ||  pMod->aSegments[i].LinkAddress == NIL_KLDRADDR
+            ||  !pMod->aSegments[i].Alignment)
+            continue;
+        rc = kRdrRead(pMod->pRdr,
+                      (KU8 *)pvBits + pMod->aSegments[i].RVA,
+                      pMod->aSegments[i].cbFile,
+                      pMod->aSegments[i].offFile);
+        if (rc)
+            return rc;
+    }
+
+    /*
+     * Perform relocations.
+     */
+    return kldrModMachORelocateBits(pMod, pvBits, BaseAddress, pModMachO->LinkAddress, pfnGetImport, pvUser);
+}
+
+
+/** @copydoc kLdrModRelocateBits */
+static int kldrModMachORelocateBits(PKLDRMOD pMod, void *pvBits, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress,
+                                    PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    PKLDRMODMACHO pModMachO = (PKLDRMODMACHO)pMod->pvData;
+    int rc;
+    K_NOREF(OldBaseAddress);
+
+    /*
+     * Call workers to do the jobs.
+     */
+    if (pModMachO->Hdr.filetype == MH_OBJECT)
+    {
+        rc = kldrModMachOObjDoImports(pModMachO, NewBaseAddress, pfnGetImport, pvUser);
+        if (!rc)
+            rc = kldrModMachOObjDoFixups(pModMachO, pvBits, NewBaseAddress);
+
+    }
+    else
+        rc = KLDR_ERR_TODO;
+    /*{
+        rc = kldrModMachODoFixups(pModMachO, pvBits, NewBaseAddress, OldBaseAddress, pfnGetImport, pvUser);
+        if (!rc)
+            rc = kldrModMachODoImports(pModMachO, pvBits, pfnGetImport, pvUser);
+    }*/
+
+    /*
+     * Construct the global offset table if necessary, it's always the last
+     * segment when present.
+     */
+    if (!rc && pModMachO->fMakeGot)
+        rc = kldrModMachOMakeGOT(pModMachO, pvBits, NewBaseAddress);
+
+    return rc;
+}
+
+
+/**
+ * Builds the GOT.
+ *
+ * Assumes the symbol table has all external symbols resolved correctly and that
+ * the bits has been cleared up front.
+ */
+static int kldrModMachOMakeGOT(PKLDRMODMACHO pModMachO, void *pvBits, KLDRADDR NewBaseAddress)
+{
+    KU32  iSym = pModMachO->cSymbols;
+    if (    pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE
+        ||  pModMachO->Hdr.magic == IMAGE_MACHO32_SIGNATURE_OE)
+    {
+        macho_nlist_32_t const *paSyms = (macho_nlist_32_t const *)pModMachO->pvaSymbols;
+        KU32 *paGOT = (KU32 *)((KU8 *)pvBits + pModMachO->GotRVA);
+        while (iSym-- > 0)
+            switch (paSyms[iSym].n_type & MACHO_N_TYPE)
+            {
+                case MACHO_N_SECT:
+                {
+                    PKLDRMODMACHOSECT pSymSect;
+                    KLDRMODMACHO_CHECK_RETURN((KU32)paSyms[iSym].n_sect - 1 <= pModMachO->cSections, KLDR_ERR_MACHO_BAD_SYMBOL);
+                    pSymSect = &pModMachO->paSections[paSyms[iSym].n_sect - 1];
+                    paGOT[iSym] = (KU32)(paSyms[iSym].n_value - pSymSect->LinkAddress + pSymSect->RVA + NewBaseAddress);
+                    break;
+                }
+
+                case MACHO_N_UNDF:
+                case MACHO_N_ABS:
+                    paGOT[iSym] = paSyms[iSym].n_value;
+                    break;
+            }
+    }
+    else
+    {
+        macho_nlist_64_t const *paSyms = (macho_nlist_64_t const *)pModMachO->pvaSymbols;
+        KU64 *paGOT = (KU64 *)((KU8 *)pvBits + pModMachO->GotRVA);
+        while (iSym-- > 0)
+        {
+            switch (paSyms[iSym].n_type & MACHO_N_TYPE)
+            {
+                case MACHO_N_SECT:
+                {
+                    PKLDRMODMACHOSECT pSymSect;
+                    KLDRMODMACHO_CHECK_RETURN((KU32)paSyms[iSym].n_sect - 1 <= pModMachO->cSections, KLDR_ERR_MACHO_BAD_SYMBOL);
+                    pSymSect = &pModMachO->paSections[paSyms[iSym].n_sect - 1];
+                    paGOT[iSym] = paSyms[iSym].n_value - pSymSect->LinkAddress + pSymSect->RVA + NewBaseAddress;
+                    break;
+                }
+
+                case MACHO_N_UNDF:
+                case MACHO_N_ABS:
+                    paGOT[iSym] = paSyms[iSym].n_value;
+                    break;
+            }
+        }
+
+        if (pModMachO->JmpStubsRVA != NIL_KLDRADDR)
+        {
+            iSym = pModMachO->cSymbols;
+            switch (pModMachO->Hdr.cputype)
+            {
+                /*
+                 * AMD64 is simple since the GOT and the indirect jmps are parallel
+                 * arrays with entries of the same size. The relative offset will
+                 * be the the same for each entry, kind of nice. :-)
+                 */
+                case CPU_TYPE_X86_64:
+                {
+                    KU64   *paJmps = (KU64 *)((KU8 *)pvBits + pModMachO->JmpStubsRVA);
+                    KI32    off;
+                    KU64    u64Tmpl;
+                    union
+                    {
+                        KU8     ab[8];
+                        KU64    u64;
+                    }       Tmpl;
+
+                    /* create the template. */
+                    off = (KI32)(pModMachO->GotRVA - (pModMachO->JmpStubsRVA + 6));
+                    Tmpl.ab[0] = 0xff; /* jmp [GOT-entry wrt RIP] */
+                    Tmpl.ab[1] = 0x25;
+                    Tmpl.ab[2] =  off        & 0xff;
+                    Tmpl.ab[3] = (off >>  8) & 0xff;
+                    Tmpl.ab[4] = (off >> 16) & 0xff;
+                    Tmpl.ab[5] = (off >> 24) & 0xff;
+                    Tmpl.ab[6] = 0xcc;
+                    Tmpl.ab[7] = 0xcc;
+                    u64Tmpl = Tmpl.u64;
+
+                    /* copy the template to every jmp table entry. */
+                    while (iSym-- > 0)
+                        paJmps[iSym] = u64Tmpl;
+                    break;
+                }
+
+                default:
+                    KLDRMODMACHO_FAILED_RETURN(KLDR_ERR_TODO);
+            }
+        }
+    }
+    return 0;
+}
+
+
+/**
+ * The Mach-O module interpreter method table.
+ */
+KLDRMODOPS g_kLdrModMachOOps =
+{
+    "Mach-O",
+    NULL,
+    kldrModMachOCreate,
+    kldrModMachODestroy,
+    kldrModMachOQuerySymbol,
+    kldrModMachOEnumSymbols,
+    kldrModMachOGetImport,
+    kldrModMachONumberOfImports,
+    NULL /* can execute one is optional */,
+    kldrModMachOGetStackInfo,
+    kldrModMachOQueryMainEntrypoint,
+    kldrModMachOQueryImageUuid,
+    NULL,
+    NULL,
+    kldrModMachOEnumDbgInfo,
+    kldrModMachOHasDbgInfo,
+    kldrModMachOMap,
+    kldrModMachOUnmap,
+    kldrModMachOAllocTLS,
+    kldrModMachOFreeTLS,
+    kldrModMachOReload,
+    kldrModMachOFixupMapping,
+    kldrModMachOCallInit,
+    kldrModMachOCallTerm,
+    kldrModMachOCallThread,
+    kldrModMachOSize,
+    kldrModMachOGetBits,
+    kldrModMachORelocateBits,
+    NULL, /** @todo mostly done */
+    42 /* the end */
+};
+
diff --git a/src/lib/kStuff/kLdr/kLdrModNative.c b/src/lib/kStuff/kLdr/kLdrModNative.c
new file mode 100644
index 0000000..01ff4a6
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrModNative.c
@@ -0,0 +1,1206 @@
+/* $Id: kLdrModNative.c 117 2020-03-15 15:23:36Z bird $ */
+/** @file
+ * kLdr - The Module Interpreter for the Native Loaders.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kLdr.h>
+#include "kLdrInternal.h"
+
+#if K_OS == K_OS_OS2
+# define INCL_BASE
+# include <os2.h>
+
+# ifndef LIBPATHSTRICT
+#  define LIBPATHSTRICT 3
+# endif
+  extern APIRET DosQueryHeaderInfo(HMODULE hmod, ULONG ulIndex, PVOID pvBuffer, ULONG cbBuffer, ULONG ulSubFunction);
+# define QHINF_EXEINFO       1 /* NE exeinfo. */
+# define QHINF_READRSRCTBL   2 /* Reads from the resource table. */
+# define QHINF_READFILE      3 /* Reads from the executable file. */
+# define QHINF_LIBPATHLENGTH 4 /* Gets the libpath length. */
+# define QHINF_LIBPATH       5 /* Gets the entire libpath. */
+# define QHINF_FIXENTRY      6 /* NE only */
+# define QHINF_STE           7 /* NE only */
+# define QHINF_MAPSEL        8 /* NE only */
+
+#elif K_OS == K_OS_WINDOWS
+# undef IMAGE_NT_SIGNATURE
+# undef IMAGE_DOS_SIGNATURE
+# include <windows.h>
+# ifndef IMAGE_SCN_TYPE_NOLOAD
+#  define IMAGE_SCN_TYPE_NOLOAD 0x00000002
+# endif
+
+/*#elif defined(__NT__)
+#include <winnt.h> */
+
+#elif K_OS == K_OS_DARWIN
+# include <dlfcn.h>
+# include <errno.h>
+
+#else
+# error "port me"
+#endif
+
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** @def KLDRMODNATIVE_STRICT
+ * Define KLDRMODNATIVE_STRICT to enabled strict checks in KLDRMODNATIVE. */
+#define KLDRMODNATIVE_STRICT 1
+
+/** @def KLDRMODNATIVE_ASSERT
+ * Assert that an expression is true when KLDR_STRICT is defined.
+ */
+#ifdef KLDRMODNATIVE_STRICT
+# define KLDRMODNATIVE_ASSERT(expr)  kHlpAssert(expr)
+#else
+# define KLDRMODNATIVE_ASSERT(expr)  do {} while (0)
+#endif
+
+#if K_OS == K_OS_WINDOWS
+/** @def KLDRMODNATIVE_RVA2TYPE
+ * Converts a RVA to a pointer of the specified type.
+ * @param   pvBits      The bits (image base).
+ * @param   uRVA        The image relative virtual address.
+ * @param   type        The type to cast to.
+ */
+# define KLDRMODNATIVE_RVA2TYPE(pvBits, uRVA, type) \
+        ( (type) ((KUPTR)(pvBits) + (uRVA)) )
+
+#endif /* PE OSes */
+
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Instance data for the module interpreter for the Native Loaders.
+ */
+typedef struct KLDRMODNATIVE
+{
+    /** Pointer to the module. (Follows the section table.) */
+    PKLDRMOD                    pMod;
+    /** Reserved flags. */
+    KU32                        f32Reserved;
+    /** The number of imported modules.
+     * If ~(KU32)0 this hasn't been determined yet. */
+    KU32                        cImportModules;
+#if K_OS == K_OS_OS2
+    /** The module handle. */
+    HMODULE                     hmod;
+
+#elif K_OS == K_OS_WINDOWS
+    /** The module handle. */
+    HANDLE                      hmod;
+    /** Pointer to the NT headers. */
+    const IMAGE_NT_HEADERS     *pNtHdrs;
+    /** Pointer to the section header array. */
+    const IMAGE_SECTION_HEADER *paShdrs;
+
+#elif K_OS == K_OS_DARWIN
+    /** The dlopen() handle.*/
+    void                       *pvMod;
+
+#else
+# error "Port me"
+#endif
+} KLDRMODNATIVE, *PKLDRMODNATIVE;
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static KI32 kldrModNativeNumberOfImports(PKLDRMOD pMod, const void *pvBits);
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+extern KLDRMODOPS g_kLdrModNativeOps;
+
+
+
+/**
+ * Use native loader to load the file opened by pRdr.
+ *
+ * @returns 0 on success and *ppMod pointing to a module instance.
+ *          On failure, a non-zero OS specific error code is returned.
+ * @param   pOps            Pointer to the registered method table.
+ * @param   pRdr            The file provider instance to use.
+ * @param   offNewHdr       The offset of the new header in MZ files. -1 if not found.
+ * @param   ppMod           Where to store the module instance pointer.
+ */
+static int kldrModNativeCreate(PCKLDRMODOPS pOps, PKRDR pRdr, KU32 fFlags, KCPUARCH enmCpuArch,
+                               KLDRFOFF offNewHdr, PPKLDRMOD ppMod)
+{
+    int rc = kLdrModOpenNative(kRdrName(pRdr), fFlags, ppMod);
+    if (rc)
+        return rc;
+    rc = kRdrClose(pRdr);
+    KLDRMODNATIVE_ASSERT(!rc);
+    return 0;
+}
+
+
+/**
+ * Loads a module using the native module loader.
+ *
+ * @returns 0 on success.
+ * @returns non-zero native or kLdr status code on failure.
+ * @param   pszFilename         The filename or module name to be loaded.
+ * @param   fFlags              Module open flags, KLDRMOD_OPEN_FLAGS_XXX.
+ * @param   ppMod               Where to store the module interpreter instance pointer.
+ */
+int kLdrModOpenNative(const char *pszFilename, KU32 fFlags, PPKLDRMOD ppMod)
+{
+    int rc;
+
+    /*
+     * Load the image.
+     */
+#if K_OS == K_OS_OS2
+    HMODULE hmod;
+    kHlpAssertReturn(!(fFlags & ~KLDRMOD_OPEN_FLAGS_VALID_MASK), KERR_INVALID_PARAMETER);
+
+    rc = DosLoadModule(NULL, 0, (PCSZ)pszFilename, &hmod);
+    if (rc)
+        return rc;
+    rc = kLdrModOpenNativeByHandle((KUPTR)hmod, fFlags, ppMod);
+    if (rc)
+        DosFreeModule(hmod);
+
+#elif K_OS == K_OS_WINDOWS
+    HMODULE hmod;
+    kHlpAssertReturn(!(fFlags & ~KLDRMOD_OPEN_FLAGS_VALID_MASK), KERR_INVALID_PARAMETER);
+
+    hmod = LoadLibrary(pszFilename);
+    if (!hmod)
+        return GetLastError();
+    rc = kLdrModOpenNativeByHandle((KUPTR)hmod, fFlags, ppMod);
+    if (rc)
+        FreeLibrary(hmod);
+
+#elif K_OS == K_OS_DARWIN
+    void *pvMod;
+    kHlpAssertReturn(!(fFlags & ~KLDRMOD_OPEN_FLAGS_VALID_MASK), KERR_INVALID_PARAMETER);
+
+    pvMod = dlopen(pszFilename, 0);
+    if (!pvMod)
+        return ENOENT;
+    rc = kLdrModOpenNativeByHandle((KUPTR)pvMod, fFlags, ppMod);
+    if (rc)
+        dlclose(pvMod);
+
+#else
+# error "Port me"
+#endif
+    return rc;
+}
+
+
+/**
+ * Creates a native module interpret for an already module already
+ * loaded by the native loader.
+ *
+ * @returns 0 on success.
+ * @returns non-zero native or kLdr status code on failure.
+ * @param   pszFilename         The filename or module name to be loaded.
+ * @param   fFlags              Module open flags, KLDRMOD_OPEN_FLAGS_XXX.
+ * @param   ppMod               Where to store the module interpreter instance pointer.
+ * @remark  This will not make the native loader increment the load count.
+ */
+int kLdrModOpenNativeByHandle(KUPTR uHandle, KU32 fFlags, PPKLDRMOD ppMod)
+{
+    KSIZE cb;
+    KU32 cchFilename;
+    KU32 cSegments;
+    PKLDRMOD pMod;
+    PKLDRMODNATIVE pModNative;
+
+    /*
+     * Delcare variables, parse the module header or whatever and determin the
+     * size of the module instance.
+     */
+#if K_OS == K_OS_OS2
+    char szFilename[CCHMAXPATH];
+    int rc;
+
+    /* get the filename. */
+    rc = DosQueryModuleName((HMODULE)uHandle, sizeof(szFilename), szFilename);
+    if (rc)
+    {
+        KLDRMODNATIVE_ASSERT(rc);
+        szFilename[0] = '\0';
+    }
+
+    /* get the segment count. */
+    /** @todo DosQueryHeaderInfo should be able to get us what we want on OS/2. */
+    cSegments = 1;
+
+#elif K_OS == K_OS_WINDOWS
+    DWORD                       dw;
+    char                        szFilename[MAX_PATH];
+    const IMAGE_NT_HEADERS     *pNtHdrs;
+    const IMAGE_SECTION_HEADER *paShdrs;
+    const IMAGE_DOS_HEADER     *pDosHdr = (const IMAGE_DOS_HEADER *)uHandle;
+    unsigned                    i;
+
+    /* get the filename. */
+    dw = GetModuleFileName((HANDLE)uHandle, szFilename, sizeof(szFilename));
+    if (dw <= 0)
+    {
+        KLDRMODNATIVE_ASSERT(dw <= 0);
+        szFilename[0] = '\0';
+    }
+
+    /* get the segment count. */
+    if (pDosHdr->e_magic == IMAGE_DOS_SIGNATURE)
+        pNtHdrs = (const IMAGE_NT_HEADERS *)((KUPTR)pDosHdr + pDosHdr->e_lfanew);
+    else
+        pNtHdrs = (const IMAGE_NT_HEADERS *)pDosHdr;
+    if (pNtHdrs->Signature != IMAGE_NT_SIGNATURE)
+    {
+        KLDRMODNATIVE_ASSERT(!"bad signature");
+        return KLDR_ERR_UNKNOWN_FORMAT;
+    }
+    if (pNtHdrs->FileHeader.SizeOfOptionalHeader != sizeof(IMAGE_OPTIONAL_HEADER))
+    {
+        KLDRMODNATIVE_ASSERT(!"bad optional header size");
+        return KLDR_ERR_UNKNOWN_FORMAT;
+    }
+    cSegments = pNtHdrs->FileHeader.NumberOfSections + 1;
+    paShdrs = (const IMAGE_SECTION_HEADER *)(pNtHdrs + 1);
+
+#elif K_OS == K_OS_DARWIN
+    char    szFilename[1] = "";
+    cSegments = 0; /** @todo Figure out the Mac OS X dynamic loader. */
+
+#else
+# error "Port me"
+#endif
+
+    kHlpAssertReturn(!(fFlags & ~KLDRMOD_OPEN_FLAGS_VALID_MASK), KERR_INVALID_PARAMETER);
+
+    /*
+     * Calc the instance size, allocate and initialize it.
+     */
+    cchFilename = (KU32)kHlpStrLen(szFilename);
+    cb = K_ALIGN_Z(sizeof(KLDRMODNATIVE), 16)
+       + K_OFFSETOF(KLDRMOD, aSegments[cSegments])
+       + cchFilename + 1;
+    pModNative = (PKLDRMODNATIVE)kHlpAlloc(cb);
+    if (!pModNative)
+        return KERR_NO_MEMORY;
+
+    /* KLDRMOD */
+    pMod = (PKLDRMOD)((KU8 *)pModNative + K_ALIGN_Z(sizeof(KLDRMODNATIVE), 16));
+    pMod->pvData = pModNative;
+    pMod->pRdr = NULL;
+    pMod->pOps = NULL;      /* set upon success. */
+    pMod->cSegments = cSegments;
+    pMod->cchFilename = cchFilename;
+    pMod->pszFilename = (char *)&pMod->aSegments[pMod->cSegments];
+    kHlpMemCopy((char *)pMod->pszFilename, szFilename, cchFilename + 1);
+    pMod->pszName = kHlpGetFilename(pMod->pszFilename); /** @todo get soname */
+    pMod->cchName = cchFilename - (KU32)(pMod->pszName - pMod->pszFilename);
+    pMod->fFlags = fFlags;
+#if defined(__i386__) || defined(__X86__) || defined(_M_IX86)
+    pMod->enmCpu = KCPU_I386;
+    pMod->enmArch = KCPUARCH_X86_32;
+    pMod->enmEndian = KLDRENDIAN_LITTLE;
+#elif defined(__X86_64__) || defined(__x86_64__) || defined(__AMD64__) || defined(_M_IX64)
+    pMod->enmCpu = KCPU_K8;
+    pMod->enmArch = KCPUARCH_AMD64;
+    pMod->enmEndian = KLDRENDIAN_LITTLE;
+#else
+# error "Port me"
+#endif
+    pMod->enmFmt = KLDRFMT_NATIVE;
+    pMod->enmType = KLDRTYPE_SHARED_LIBRARY_RELOCATABLE;
+    pMod->u32Magic = 0;     /* set upon success. */
+
+    /* KLDRMODNATIVE */
+    pModNative->pMod = pMod;
+    pModNative->f32Reserved = 0;
+    pModNative->cImportModules = ~(KU32)0;
+
+    /*
+     * Set native instance data.
+     */
+#if K_OS == K_OS_OS2
+    pModNative->hmod = (HMODULE)uHandle;
+
+    /* just fake a segment for now. */
+    pMod->aSegments[0].pvUser = NULL;
+    pMod->aSegments[0].pchName = "fake";
+    pMod->aSegments[0].cchName = sizeof("fake") - 1;
+    pMod->aSegments[0].enmProt = KPROT_NOACCESS;
+    pMod->aSegments[0].cb = 0;
+    pMod->aSegments[0].Alignment = 0;
+    pMod->aSegments[0].LinkAddress = NIL_KLDRADDR;
+    pMod->aSegments[0].offFile = -1;
+    pMod->aSegments[0].cbFile = 0;
+    pMod->aSegments[0].RVA = NIL_KLDRADDR;
+    pMod->aSegments[0].cbMapped = 0;
+    pMod->aSegments[0].MapAddress = 0;
+
+#elif K_OS == K_OS_WINDOWS
+    pModNative->hmod = (HMODULE)uHandle;
+    pModNative->pNtHdrs = pNtHdrs;
+    pModNative->paShdrs = paShdrs;
+
+    if (pNtHdrs->FileHeader.Characteristics & IMAGE_FILE_DLL)
+        pMod->enmType = !(pNtHdrs->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
+            ? KLDRTYPE_SHARED_LIBRARY_RELOCATABLE
+            : KLDRTYPE_SHARED_LIBRARY_FIXED;
+    else
+        pMod->enmType = !(pNtHdrs->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
+            ? KLDRTYPE_EXECUTABLE_RELOCATABLE
+            : KLDRTYPE_EXECUTABLE_FIXED;
+
+    /* The implied headers section. */
+    pMod->aSegments[0].pvUser = NULL;
+    pMod->aSegments[0].pchName = "TheHeaders";
+    pMod->aSegments[0].cchName = sizeof("TheHeaders") - 1;
+    pMod->aSegments[0].enmProt = KPROT_READONLY;
+    pMod->aSegments[0].cb = pNtHdrs->OptionalHeader.SizeOfHeaders;
+    pMod->aSegments[0].Alignment = pNtHdrs->OptionalHeader.SectionAlignment;
+    pMod->aSegments[0].LinkAddress = pNtHdrs->OptionalHeader.ImageBase;
+    pMod->aSegments[0].offFile = 0;
+    pMod->aSegments[0].cbFile = pNtHdrs->OptionalHeader.SizeOfHeaders;
+    pMod->aSegments[0].RVA = 0;
+    if (pMod->cSegments > 1)
+        pMod->aSegments[0].cbMapped = paShdrs[0].VirtualAddress;
+    else
+        pMod->aSegments[0].cbMapped = pNtHdrs->OptionalHeader.SizeOfHeaders;
+    pMod->aSegments[0].MapAddress = uHandle;
+
+    /* The section headers. */
+    for (i = 0; i < pNtHdrs->FileHeader.NumberOfSections; i++)
+    {
+        const char *pch;
+        KU32        cchSegName;
+
+        /* unused */
+        pMod->aSegments[i + 1].pvUser = NULL;
+
+        /* name */
+        pMod->aSegments[i + 1].pchName = pch = &paShdrs[i].Name[0];
+        cchSegName = IMAGE_SIZEOF_SHORT_NAME;
+        while (    cchSegName > 0
+               && (pch[cchSegName - 1] == ' ' || pch[cchSegName - 1] == '\0'))
+            cchSegName--;
+        pMod->aSegments[i + 1].cchName = cchSegName;
+
+        /* size and addresses */
+        if (!(paShdrs[i].Characteristics & IMAGE_SCN_TYPE_NOLOAD))
+        {
+            pMod->aSegments[i + 1].cb          = paShdrs[i].Misc.VirtualSize;
+            pMod->aSegments[i + 1].RVA         = paShdrs[i].VirtualAddress;
+            pMod->aSegments[i + 1].LinkAddress = paShdrs[i].VirtualAddress + pNtHdrs->OptionalHeader.ImageBase;
+            pMod->aSegments[i + 1].MapAddress  = paShdrs[i].VirtualAddress + uHandle;
+            pMod->aSegments[i + 1].cbMapped    = paShdrs[i].Misc.VirtualSize;
+            if (i + 2 < pMod->cSegments)
+                pMod->aSegments[i + 1].cbMapped = paShdrs[i + 1].VirtualAddress
+                                                - paShdrs[i].VirtualAddress;
+        }
+        else
+        {
+            pMod->aSegments[i + 1].cb          = 0;
+            pMod->aSegments[i + 1].cbMapped    = 0;
+            pMod->aSegments[i + 1].LinkAddress = NIL_KLDRADDR;
+            pMod->aSegments[i + 1].RVA         = 0;
+            pMod->aSegments[i + 1].MapAddress  = 0;
+        }
+
+        /* file location */
+        pMod->aSegments[i + 1].offFile = paShdrs[i].PointerToRawData;
+        pMod->aSegments[i + 1].cbFile  = paShdrs[i].SizeOfRawData;
+        if (    pMod->aSegments[i + 1].cbMapped > 0 /* if mapped */
+            &&  (KLDRSIZE)pMod->aSegments[i + 1].cbFile > pMod->aSegments[i + 1].cbMapped)
+            pMod->aSegments[i + 1].cbFile = (KLDRFOFF)pMod->aSegments[i + 1].cbMapped;
+
+        /* protection */
+        switch (  paShdrs[i].Characteristics
+                & (IMAGE_SCN_MEM_SHARED | IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE))
+        {
+            case 0:
+            case IMAGE_SCN_MEM_SHARED:
+                pMod->aSegments[i + 1].enmProt = KPROT_NOACCESS;
+                break;
+            case IMAGE_SCN_MEM_READ:
+            case IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_SHARED:
+                pMod->aSegments[i + 1].enmProt = KPROT_READONLY;
+                break;
+            case IMAGE_SCN_MEM_WRITE:
+            case IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_READ:
+                pMod->aSegments[i + 1].enmProt = KPROT_WRITECOPY;
+                break;
+            case IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_SHARED:
+            case IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_SHARED | IMAGE_SCN_MEM_READ:
+                pMod->aSegments[i + 1].enmProt = KPROT_READWRITE;
+                break;
+            case IMAGE_SCN_MEM_EXECUTE:
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_SHARED:
+                pMod->aSegments[i + 1].enmProt = KPROT_EXECUTE;
+                break;
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ:
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_SHARED:
+                pMod->aSegments[i + 1].enmProt = KPROT_EXECUTE_READ;
+                break;
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_WRITE:
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_READ:
+                pMod->aSegments[i + 1].enmProt = KPROT_EXECUTE_WRITECOPY;
+                break;
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_SHARED:
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_SHARED | IMAGE_SCN_MEM_READ:
+                pMod->aSegments[i + 1].enmProt = KPROT_EXECUTE_READWRITE;
+                break;
+        }
+
+        /* alignment. */
+        switch (paShdrs[i].Characteristics & IMAGE_SCN_ALIGN_MASK)
+        {
+            case 0: /* hope this is right... */
+                pMod->aSegments[i + 1].Alignment = pNtHdrs->OptionalHeader.SectionAlignment;
+                break;
+            case IMAGE_SCN_ALIGN_1BYTES:        pMod->aSegments[i + 1].Alignment = 1; break;
+            case IMAGE_SCN_ALIGN_2BYTES:        pMod->aSegments[i + 1].Alignment = 2; break;
+            case IMAGE_SCN_ALIGN_4BYTES:        pMod->aSegments[i + 1].Alignment = 4; break;
+            case IMAGE_SCN_ALIGN_8BYTES:        pMod->aSegments[i + 1].Alignment = 8; break;
+            case IMAGE_SCN_ALIGN_16BYTES:       pMod->aSegments[i + 1].Alignment = 16; break;
+            case IMAGE_SCN_ALIGN_32BYTES:       pMod->aSegments[i + 1].Alignment = 32; break;
+            case IMAGE_SCN_ALIGN_64BYTES:       pMod->aSegments[i + 1].Alignment = 64; break;
+            case IMAGE_SCN_ALIGN_128BYTES:      pMod->aSegments[i + 1].Alignment = 128; break;
+            case IMAGE_SCN_ALIGN_256BYTES:      pMod->aSegments[i + 1].Alignment = 256; break;
+            case IMAGE_SCN_ALIGN_512BYTES:      pMod->aSegments[i + 1].Alignment = 512; break;
+            case IMAGE_SCN_ALIGN_1024BYTES:     pMod->aSegments[i + 1].Alignment = 1024; break;
+            case IMAGE_SCN_ALIGN_2048BYTES:     pMod->aSegments[i + 1].Alignment = 2048; break;
+            case IMAGE_SCN_ALIGN_4096BYTES:     pMod->aSegments[i + 1].Alignment = 4096; break;
+            case IMAGE_SCN_ALIGN_8192BYTES:     pMod->aSegments[i + 1].Alignment = 8192; break;
+            default: kHlpAssert(0);          pMod->aSegments[i + 1].Alignment = 0; break;
+        }
+    }
+
+#elif K_OS == K_OS_DARWIN
+    /** @todo Figure out the Mac OS X dynamic loader. */
+
+#else
+# error "Port me"
+#endif
+
+    /*
+     * We're done.
+     */
+    pMod->u32Magic = KLDRMOD_MAGIC;
+    pMod->pOps = &g_kLdrModNativeOps;
+    *ppMod = pMod;
+    return 0;
+}
+
+
+/** @copydoc KLDRMODOPS::pfnDestroy */
+static int kldrModNativeDestroy(PKLDRMOD pMod)
+{
+    PKLDRMODNATIVE pModNative = (PKLDRMODNATIVE)pMod->pvData;
+    int rc;
+
+#if K_OS == K_OS_OS2
+    rc = DosFreeModule(pModNative->hmod);
+
+#elif K_OS == K_OS_WINDOWS
+    if (FreeLibrary(pModNative->hmod))
+        rc = 0;
+    else
+        rc = GetLastError();
+
+#elif K_OS == K_OS_DARWIN
+    dlclose(pModNative->pvMod);
+
+#else
+# error "Port me"
+#endif
+
+    pMod->u32Magic = 0;
+    pMod->pOps = NULL;
+    kHlpFree(pModNative);
+    return rc;
+}
+
+
+/** @copydoc kLdrModQuerySymbol */
+static int kldrModNativeQuerySymbol(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 iSymbol,
+                                    const char *pchSymbol, KSIZE cchSymbol, const char *pszVersion,
+                                    PFNKLDRMODGETIMPORT pfnGetForwarder, void *pvUser, PKLDRADDR puValue, KU32 *pfKind)
+{
+    PKLDRMODNATIVE pModNative = (PKLDRMODNATIVE)pMod->pvData;
+    const char *pszSymbol = pchSymbol;
+#if K_OS == K_OS_OS2
+    APIRET rc;
+    PFN pfn;
+#elif K_OS == K_OS_WINDOWS
+    FARPROC pfn;
+#elif K_OS == K_OS_DARWIN
+    void *pfn;
+#else
+# error "Port me"
+#endif
+
+    /* make stack copy of the symbol if it isn't zero terminated. */
+    if (pszSymbol && pszSymbol[cchSymbol])
+    {
+        char *pszCopy = kHlpAllocA(cchSymbol + 1);
+        kHlpMemCopy(pszCopy, pchSymbol, cchSymbol);
+        pszCopy[cchSymbol] = '\0';
+        pszSymbol = pszCopy;
+    }
+
+#if K_OS == K_OS_OS2
+    if (!pchSymbol && iSymbol >= 0x10000)
+        return KLDR_ERR_SYMBOL_NOT_FOUND;
+
+    if (puValue)
+    {
+        rc = DosQueryProcAddr(pModNative->hmod,
+                              pszSymbol ? 0 : iSymbol,
+                              (PCSZ)pszSymbol,
+                              &pfn);
+        if (rc)
+            return rc == ERROR_PROC_NOT_FOUND ? KLDR_ERR_SYMBOL_NOT_FOUND : rc;
+        *puValue = (KUPTR)pfn;
+    }
+    if (pfKind)
+    {
+        ULONG ulProcType;
+        rc = DosQueryProcType(pModNative->hmod,
+                              pszSymbol ? 0 : iSymbol,
+                              (PCSZ)pszSymbol,
+                              &ulProcType);
+        if (rc)
+        {
+            if (puValue)
+                *puValue = 0;
+            return rc == ERROR_PROC_NOT_FOUND ? KLDR_ERR_SYMBOL_NOT_FOUND : rc;
+        }
+        *pfKind = (ulProcType & PT_32BIT ? KLDRSYMKIND_32BIT : KLDRSYMKIND_16BIT)
+                | KLDRSYMKIND_NO_TYPE;
+    }
+
+#elif K_OS == K_OS_WINDOWS
+    if (!pszSymbol && iSymbol >= 0x10000)
+        return KLDR_ERR_SYMBOL_NOT_FOUND;
+
+    pfn = GetProcAddress(pModNative->hmod, pszSymbol ? pszSymbol : (const char *)(KUPTR)iSymbol);
+    if (puValue)
+        *puValue = (KUPTR)pfn;
+    if (pfKind)
+        *pfKind = (pModNative->pNtHdrs->FileHeader.SizeOfOptionalHeader == sizeof(IMAGE_OPTIONAL_HEADER32)
+                   ? KLDRSYMKIND_32BIT : KLDRSYMKIND_16BIT)
+                | KLDRSYMKIND_NO_TYPE;
+
+#elif K_OS == K_OS_DARWIN
+    if (!pszSymbol && iSymbol != NIL_KLDRMOD_SYM_ORDINAL)
+        return KLDR_ERR_SYMBOL_NOT_FOUND;
+
+    pfn = dlsym(pModNative->pvMod, pszSymbol);
+    if (!pfn)
+        return KLDR_ERR_SYMBOL_NOT_FOUND;
+    if (puValue)
+        *puValue = (KUPTR)pfn;
+    if (pfKind)
+        *pfKind = (sizeof(KUPTR) == 4 ? KLDRSYMKIND_32BIT : KLDRSYMKIND_64BIT)
+                | KLDRSYMKIND_NO_TYPE;
+
+#else
+# error "Port me"
+#endif
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModEnumSymbols */
+static int kldrModNativeEnumSymbols(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress,
+                                    KU32 fFlags, PFNKLDRMODENUMSYMS pfnCallback, void *pvUser)
+{
+    PKLDRMODNATIVE                  pModNative = (PKLDRMODNATIVE)pMod->pvData;
+#if K_OS == K_OS_OS2
+
+    /** @todo implement export enumeration on OS/2. */
+    (void)pModNative;
+    return ERROR_NOT_SUPPORTED;
+
+#elif K_OS == K_OS_WINDOWS || defined(__NT__)
+    const KU32                     *paFunctions;
+    const IMAGE_EXPORT_DIRECTORY   *pExpDir;
+    const KU32                     *paRVANames;
+    const KU16                     *paOrdinals;
+    KU32                            iFunction;
+    KU32                            cFunctions;
+    KU32                            cNames;
+    int                             rc;
+
+    /*
+     * Make sure we've got mapped bits and resolve any base address aliases.
+     */
+    if (    pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size
+        <   sizeof(IMAGE_EXPORT_DIRECTORY))
+        return 0; /* no exports to enumerate, return success. */
+
+    pExpDir = KLDRMODNATIVE_RVA2TYPE(pModNative->hmod,
+                                     pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress,
+                                     PIMAGE_EXPORT_DIRECTORY);
+
+    /*
+     * Enumerate the ordinal exports.
+     */
+    paRVANames = KLDRMODNATIVE_RVA2TYPE(pModNative->hmod, pExpDir->AddressOfNames, const KU32 *);
+    paOrdinals = KLDRMODNATIVE_RVA2TYPE(pModNative->hmod, pExpDir->AddressOfNameOrdinals, const KU16 *);
+    paFunctions = KLDRMODNATIVE_RVA2TYPE(pModNative->hmod, pExpDir->AddressOfFunctions, const KU32 *);
+    cFunctions = pExpDir->NumberOfFunctions;
+    cNames = pExpDir->NumberOfNames;
+    for (iFunction = 0; iFunction < cFunctions; iFunction++)
+    {
+        unsigned        fFoundName;
+        KU32            iName;
+        const KU32      uRVA = paFunctions[iFunction];
+        const KLDRADDR  uValue = BaseAddress + uRVA;
+        KU32            fKind = (pModNative->pNtHdrs->FileHeader.SizeOfOptionalHeader == sizeof(IMAGE_OPTIONAL_HEADER32)
+                              ? KLDRSYMKIND_32BIT : KLDRSYMKIND_64BIT)
+                              | KLDRSYMKIND_NO_TYPE;
+        if (    uRVA - pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress
+            <   pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size)
+            fKind |= KLDRSYMKIND_FORWARDER;
+
+        /*
+         * Any symbol names?
+         */
+        fFoundName = 0;
+        for (iName = 0; iName < cNames; iName++)
+        {
+            const char *pszName;
+            if (paOrdinals[iName] != iFunction)
+                continue;
+            fFoundName = 1;
+
+            pszName = KLDRMODNATIVE_RVA2TYPE(pModNative->hmod, paRVANames[iName], const char *);
+            rc = pfnCallback(pMod, iFunction + pExpDir->Base, pszName, strlen(pszName), NULL,
+                             uValue, fKind, pvUser);
+            if (rc)
+                return rc;
+        }
+
+        /*
+         * If no names, call once with the ordinal only.
+         */
+        if (!fFoundName)
+        {
+            rc = pfnCallback(pMod, iFunction + pExpDir->Base, NULL, 0, NULL, uValue, fKind, pvUser);
+            if (rc)
+                return rc;
+        }
+    }
+    return 0;
+
+#elif K_OS == K_OS_DARWIN
+    /** @todo implement enumeration on darwin. */
+    (void)pModNative;
+    return KLDR_ERR_TODO;
+
+#else
+# error "Port me"
+#endif
+
+}
+
+
+/** @copydoc kLdrModGetImport */
+static int kldrModNativeGetImport(PKLDRMOD pMod, const void *pvBits, KU32 iImport, char *pszName, KSIZE cchName)
+{
+    PKLDRMODNATIVE                  pModNative = (PKLDRMODNATIVE)pMod->pvData;
+#if K_OS == K_OS_OS2
+
+    /** @todo implement import enumeration on OS/2. */
+    (void)pModNative;
+    return ERROR_NOT_SUPPORTED;
+
+#elif K_OS == K_OS_WINDOWS || defined(__NT__)
+    const IMAGE_IMPORT_DESCRIPTOR  *pImpDesc;
+    const char                     *pszImportName;
+    KSIZE                           cchImportName;
+    int                             rc;
+
+    /*
+     * Simple bounds check.
+     */
+    if (iImport >= (KU32)kldrModNativeNumberOfImports(pMod, pvBits))
+        return KLDR_ERR_IMPORT_ORDINAL_OUT_OF_BOUNDS;
+
+    /*
+     * Get the name.
+     */
+    pImpDesc = KLDRMODNATIVE_RVA2TYPE(pModNative->hmod,
+                                      pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress
+                                      + sizeof(IMAGE_IMPORT_DESCRIPTOR) * iImport,
+                                      const IMAGE_IMPORT_DESCRIPTOR *);
+    pszImportName = KLDRMODNATIVE_RVA2TYPE(pModNative->hmod, pImpDesc->Name, const char *);
+    cchImportName = kHlpStrLen(pszImportName);
+    if (cchImportName < cchName)
+    {
+        kHlpMemCopy(pszName, pszImportName, cchImportName + 1);
+        rc = 0;
+    }
+    else
+    {
+        kHlpMemCopy(pszName, pszImportName, cchName);
+        if (cchName)
+            pszName[cchName - 1] = '\0';
+        rc = KERR_BUFFER_OVERFLOW;
+    }
+
+    return rc;
+
+#elif K_OS == K_OS_DARWIN
+    /** @todo Implement import enumeration on darwin. */
+    (void)pModNative;
+    return KLDR_ERR_TODO;
+
+#else
+# error "Port me"
+#endif
+}
+
+
+/** @copydoc kLdrModNumberOfImports */
+static KI32 kldrModNativeNumberOfImports(PKLDRMOD pMod, const void *pvBits)
+{
+    PKLDRMODNATIVE pModNative = (PKLDRMODNATIVE)pMod->pvData;
+#if K_OS == K_OS_OS2
+
+    /** @todo implement import counting on OS/2. */
+    (void)pModNative;
+    return -1;
+
+#elif K_OS == K_OS_WINDOWS || defined(__NT__)
+    if (pModNative->cImportModules == ~(KU32)0)
+    {
+        /*
+         * We'll have to walk the import descriptors to figure out their number.
+         */
+        pModNative->cImportModules = 0;
+        if (    pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].Size
+            &&  pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress)
+        {
+            const IMAGE_IMPORT_DESCRIPTOR  *pImpDesc;
+
+            pImpDesc = KLDRMODNATIVE_RVA2TYPE(pModNative->hmod,
+                                              pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress,
+                                              const IMAGE_IMPORT_DESCRIPTOR *);
+            while (pImpDesc->Name && pImpDesc->FirstThunk)
+            {
+                pModNative->cImportModules++;
+                pImpDesc++;
+            }
+        }
+    }
+    return pModNative->cImportModules;
+
+#elif K_OS == K_OS_DARWIN
+    /** @todo Implement import counting on Darwin. */
+    (void)pModNative;
+    return -1;
+
+#else
+# error "Port me"
+#endif
+}
+
+
+/** @copydoc kLdrModGetStackInfo */
+static int kldrModNativeGetStackInfo(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRSTACKINFO pStackInfo)
+{
+    PKLDRMODNATIVE pModNative = (PKLDRMODNATIVE)pMod->pvData;
+#if K_OS == K_OS_OS2
+
+    /** @todo implement stack info on OS/2. */
+    (void)pModNative;
+    return ERROR_NOT_SUPPORTED;
+
+#elif K_OS == K_OS_WINDOWS || defined(__NT__)
+    pStackInfo->Address = NIL_KLDRADDR;
+    pStackInfo->LinkAddress = NIL_KLDRADDR;
+    pStackInfo->cbStack = pStackInfo->cbStackThread = pModNative->pNtHdrs->OptionalHeader.SizeOfStackReserve;
+
+    return 0;
+
+#elif K_OS == K_OS_DARWIN
+    /** @todo Implement stack info on Darwin. */
+    (void)pModNative;
+    return KLDR_ERR_TODO;
+
+#else
+# error "Port me"
+#endif
+}
+
+
+/** @copydoc kLdrModQueryMainEntrypoint */
+static int kldrModNativeQueryMainEntrypoint(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRADDR pMainEPAddress)
+{
+    PKLDRMODNATIVE pModNative = (PKLDRMODNATIVE)pMod->pvData;
+#if K_OS == K_OS_OS2
+
+    /** @todo implement me on OS/2. */
+    (void)pModNative;
+    return ERROR_NOT_SUPPORTED;
+
+#elif K_OS == K_OS_WINDOWS || defined(__NT__)
+    /*
+     * Convert the address from the header.
+     */
+    *pMainEPAddress = pModNative->pNtHdrs->OptionalHeader.AddressOfEntryPoint
+        ? BaseAddress + pModNative->pNtHdrs->OptionalHeader.AddressOfEntryPoint
+        : NIL_KLDRADDR;
+    return 0;
+
+#elif K_OS == K_OS_DARWIN
+    /** @todo Implement me on Darwin. */
+    (void)pModNative;
+    return KLDR_ERR_TODO;
+
+#else
+# error "Port me"
+#endif
+}
+
+
+/** @copydoc kLdrModEnumDbgInfo */
+static int kldrModNativeEnumDbgInfo(PKLDRMOD pMod, const void *pvBits, PFNKLDRENUMDBG pfnCallback, void *pvUser)
+{
+    PKLDRMODNATIVE                  pModNative = (PKLDRMODNATIVE)pMod->pvData;
+#if K_OS == K_OS_OS2
+
+    /** @todo implement me on OS/2. */
+    (void)pModNative;
+    return ERROR_NOT_SUPPORTED;
+
+#elif K_OS == K_OS_WINDOWS || defined(__NT__)
+    const IMAGE_DEBUG_DIRECTORY    *pDbgDir;
+    KU32                            iDbgInfo;
+    KU32                            cb;
+    int                             rc;
+
+    /*
+     * Check that there is a debug directory first.
+     */
+    cb = pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].Size;
+    if (    cb < sizeof(IMAGE_DEBUG_DIRECTORY) /* screw borland linkers */
+        ||  !pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress)
+        return 0;
+
+    /*
+     * Enumerate the debug directory.
+     */
+    pDbgDir = KLDRMODNATIVE_RVA2TYPE(pModNative->hmod,
+                                     pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress,
+                                     const IMAGE_DEBUG_DIRECTORY *);
+    for (iDbgInfo = 0;; iDbgInfo++, pDbgDir++, cb -= sizeof(IMAGE_DEBUG_DIRECTORY))
+    {
+        KLDRDBGINFOTYPE     enmDbgInfoType;
+
+        /* convert the type. */
+        switch (pDbgDir->Type)
+        {
+            case IMAGE_DEBUG_TYPE_UNKNOWN:
+            case IMAGE_DEBUG_TYPE_FPO:
+            case IMAGE_DEBUG_TYPE_COFF: /*stabs dialect??*/
+            case IMAGE_DEBUG_TYPE_MISC:
+            case IMAGE_DEBUG_TYPE_EXCEPTION:
+            case IMAGE_DEBUG_TYPE_FIXUP:
+            case IMAGE_DEBUG_TYPE_BORLAND:
+            default:
+                enmDbgInfoType = KLDRDBGINFOTYPE_UNKNOWN;
+                break;
+            case IMAGE_DEBUG_TYPE_CODEVIEW:
+                enmDbgInfoType = KLDRDBGINFOTYPE_CODEVIEW;
+                break;
+        }
+
+        rc = pfnCallback(pMod, iDbgInfo,
+                         enmDbgInfoType, pDbgDir->MajorVersion, pDbgDir->MinorVersion, NULL /*pszPartNm*/,
+                         pDbgDir->PointerToRawData ? pDbgDir->PointerToRawData : -1,
+                         pDbgDir->AddressOfRawData ? pDbgDir->AddressOfRawData : NIL_KLDRADDR,
+                         pDbgDir->SizeOfData,
+                         NULL /*pszExtFile*/, pvUser);
+        if (rc)
+            break;
+
+        /* next */
+        if (cb <= sizeof(IMAGE_DEBUG_DIRECTORY))
+            break;
+    }
+
+    return rc;
+
+#elif K_OS == K_OS_DARWIN
+    /** @todo Implement me on Darwin. */
+    (void)pModNative;
+    return KLDR_ERR_TODO;
+
+#else
+# error "Port me"
+#endif
+}
+
+
+/** @copydoc kLdrModHasDbgInfo */
+static int kldrModNativeHasDbgInfo(PKLDRMOD pMod, const void *pvBits)
+{
+    PKLDRMODNATIVE pModNative = (PKLDRMODNATIVE)pMod->pvData;
+#if K_OS == K_OS_OS2
+
+    /** @todo implement me on OS/2. */
+    (void)pModNative;
+    return KLDR_ERR_NO_DEBUG_INFO;
+
+#elif K_OS == K_OS_WINDOWS || defined(__NT__)
+    /*
+     * Base this entirely on the presence of a debug directory.
+     */
+    if (    pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].Size
+            < sizeof(IMAGE_DEBUG_DIRECTORY) /* screw borland linkers */
+        ||  !pModNative->pNtHdrs->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress)
+        return KLDR_ERR_NO_DEBUG_INFO;
+    return 0;
+
+#elif K_OS == K_OS_DARWIN
+    /** @todo Implement me on Darwin. */
+    (void)pModNative;
+    return KLDR_ERR_NO_DEBUG_INFO;
+
+#else
+# error "Port me"
+#endif
+}
+
+
+/** @copydoc kLdrModMap */
+static int kldrModNativeMap(PKLDRMOD pMod)
+{
+    return 0;
+}
+
+
+/** @copydoc kLdrModUnmap */
+static int kldrModNativeUnmap(PKLDRMOD pMod)
+{
+    return 0;
+}
+
+
+/** @copydoc kLdrModAllocTLS */
+static int kldrModNativeAllocTLS(PKLDRMOD pMod, void *pvMapping)
+{
+    return 0;
+}
+
+
+/** @copydoc kLdrModFreeTLS */
+static void kldrModNativeFreeTLS(PKLDRMOD pMod, void *pvMapping)
+{
+}
+
+
+/** @copydoc kLdrModReload */
+static int kldrModNativeReload(PKLDRMOD pMod)
+{
+    return 0;
+}
+
+
+/** @copydoc kLdrModFixupMapping */
+static int kldrModNativeFixupMapping(PKLDRMOD pMod, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    return 0;
+}
+
+
+#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS || defined(__NT__)
+/** Common worker on platforms where there is one entrypoint which does both. */
+static int kLdrModNativeCallInitTerm(PKLDRMODNATIVE pModNative, KUPTR uHandle, KBOOL fInit)
+{
+# if K_OS == K_OS_WINDOWS || defined(__NT__)
+    /* No TLS init/term for now. */
+    KU32 const uRvaEntrypoint = pModNative->pNtHdrs->OptionalHeader.AddressOfEntryPoint;
+    if (   uRvaEntrypoint != 0
+        && uRvaEntrypoint < pModNative->pNtHdrs->OptionalHeader.SizeOfCode
+        && (pModNative->pNtHdrs->FileHeader.Characteristics & IMAGE_FILE_DLL))
+    {
+        KI32 rc = kldrModPEDoCall(uRvaEntrypoint + (KUPTR)pModNative->hmod, uHandle,
+                                  fInit ? DLL_PROCESS_ATTACH : DLL_PROCESS_DETACH, NULL /*pvReserved*/);
+        if (rc)
+            return 0;
+        return fInit ? KLDR_ERR_MODULE_INIT_FAILED : KLDR_ERR_THREAD_ATTACH_FAILED;
+    }
+# elif K_OS == K_OS_OS2
+    //KI32 kldrModLXDoCall(KUPTR uEntrypoint, KUPTR uHandle, KU32 uOp, void *pvReserved)
+# endif
+    return 0;
+}
+#endif
+
+/** @copydoc kLdrModCallInit */
+static int kldrModNativeCallInit(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle)
+{
+#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS || defined(__NT__)
+    if (pMod->fFlags & KLDRMOD_OPEN_FLAGS_NATIVE_ALLOW_INIT_TERM)
+        return kLdrModNativeCallInitTerm((PKLDRMODNATIVE)pMod->pvData, uHandle, K_TRUE /*fInit*/);
+#endif
+    return 0;
+}
+
+
+/** @copydoc kLdrModCallTerm */
+static int kldrModNativeCallTerm(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle)
+{
+#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS || defined(__NT__)
+    if (pMod->fFlags & KLDRMOD_OPEN_FLAGS_NATIVE_ALLOW_INIT_TERM)
+        return kLdrModNativeCallInitTerm((PKLDRMODNATIVE)pMod->pvData, uHandle, K_FALSE /*fInit*/);
+#endif
+    return 0;
+}
+
+
+/** @copydoc kLdrModCallThread */
+static int kldrModNativeCallThread(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle, unsigned fAttachingOrDetaching)
+{
+    return 0;
+}
+
+
+/** @copydoc kLdrModSize */
+static KLDRADDR kldrModNativeSize(PKLDRMOD pMod)
+{
+#if K_OS == K_OS_OS2
+    return 0; /* don't bother */
+
+#elif K_OS == K_OS_WINDOWS || defined(__NT__)
+    /* just because we can. */
+    PKLDRMODNATIVE pModNative = (PKLDRMODNATIVE)pMod->pvData;
+    return pModNative->pNtHdrs->OptionalHeader.SizeOfImage;
+
+#elif K_OS == K_OS_DARWIN
+    /** @todo Implement me on Darwin. */
+    return 0;
+
+#else
+# error "Port me"
+#endif
+}
+
+
+/** @copydoc kLdrModGetBits */
+static int kldrModNativeGetBits(PKLDRMOD pMod, void *pvBits, KLDRADDR BaseAddress, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+#if K_OS == K_OS_OS2
+    return ERROR_NOT_SUPPORTED; /* don't bother */
+
+#elif K_OS == K_OS_WINDOWS || defined(__NT__)
+    return ERROR_NOT_SUPPORTED; /* don't bother even if we could implement this. */
+
+#elif K_OS == K_OS_DARWIN
+    return KLDR_ERR_TODO; /* don't bother. */
+
+#else
+# error "Port me"
+#endif
+}
+
+
+/** @copydoc kLdrModRelocateBits */
+static int kldrModNativeRelocateBits(PKLDRMOD pMod, void *pvBits, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress,
+                                     PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+#if K_OS == K_OS_OS2
+    return ERROR_NOT_SUPPORTED; /* don't bother */
+
+#elif K_OS == K_OS_WINDOWS || defined(__NT__)
+    return ERROR_NOT_SUPPORTED; /* don't bother even if we could implement this. */
+
+#elif K_OS == K_OS_DARWIN
+    return KLDR_ERR_TODO; /* don't bother. */
+
+#else
+# error "Port me"
+#endif
+}
+
+
+/**
+ * The native module interpreter method table.
+ */
+KLDRMODOPS g_kLdrModNativeOps =
+{
+    "Native",
+    NULL,
+    kldrModNativeCreate,
+    kldrModNativeDestroy,
+    kldrModNativeQuerySymbol,
+    kldrModNativeEnumSymbols,
+    kldrModNativeGetImport,
+    kldrModNativeNumberOfImports,
+    NULL /* can execute one is optional */,
+    kldrModNativeGetStackInfo,
+    kldrModNativeQueryMainEntrypoint,
+    NULL /* pfnQueryImageUuid */,
+    NULL /* fixme */,
+    NULL /* fixme */,
+    kldrModNativeEnumDbgInfo,
+    kldrModNativeHasDbgInfo,
+    kldrModNativeMap,
+    kldrModNativeUnmap,
+    kldrModNativeAllocTLS,
+    kldrModNativeFreeTLS,
+    kldrModNativeReload,
+    kldrModNativeFixupMapping,
+    kldrModNativeCallInit,
+    kldrModNativeCallTerm,
+    kldrModNativeCallThread,
+    kldrModNativeSize,
+    kldrModNativeGetBits,
+    kldrModNativeRelocateBits,
+    NULL /* fixme */,
+    42 /* the end */
+};
+
diff --git a/src/lib/kStuff/kLdr/kLdrModPE.c b/src/lib/kStuff/kLdr/kLdrModPE.c
new file mode 100644
index 0000000..1a9bbc2
--- /dev/null
+++ b/src/lib/kStuff/kLdr/kLdrModPE.c
@@ -0,0 +1,2044 @@
+/* $Id: kLdrModPE.c 117 2020-03-15 15:23:36Z bird $ */
+/** @file
+ * kLdr - The Module Interpreter for the Portable Executable (PE) Format.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kLdr.h>
+#include "kLdrInternal.h"
+#include <k/kLdrFmts/pe.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** @def KLDRMODPE_STRICT
+ * Define KLDRMODPE_STRICT to enabled strict checks in KLDRMODPE. */
+#define KLDRMODPE_STRICT 1
+
+/** @def KLDRMODPE_ASSERT
+ * Assert that an expression is true when KLDR_STRICT is defined.
+ */
+#ifdef KLDRMODPE_STRICT
+# define KLDRMODPE_ASSERT(expr)  kHlpAssert(expr)
+#else
+# define KLDRMODPE_ASSERT(expr)  do {} while (0)
+#endif
+
+/** @def KLDRMODPE_RVA2TYPE
+ * Converts a RVA to a pointer of the specified type.
+ * @param   pvBits      The bits (image base).
+ * @param   uRVA        The image relative virtual address.
+ * @param   type        The type to cast to.
+ */
+#define KLDRMODPE_RVA2TYPE(pvBits, uRVA, type) \
+        ( (type) ((KUPTR)(pvBits) + (KUPTR)(uRVA)) )
+
+/** @def KLDRMODPE_VALID_RVA
+ * Checks that the specified RVA value is non-zero and within the bounds of the image.
+ * @returns true/false.
+ * @param   pModPE      The PE module interpreter instance.
+ * @param   uRVA        The RVA to validate.
+ */
+#define KLDRMODPE_VALID_RVA(pModPE, uRVA) \
+        ( (uRVA) && (uRVA) < (pModPE)->Hdrs.OptionalHeader.SizeOfImage )
+
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Instance data for the PE module interpreter.
+ */
+typedef struct KLDRMODPE
+{
+    /** Pointer to the module. (Follows the section table.) */
+    PKLDRMOD                pMod;
+    /** Pointer to the RDR mapping of the raw file bits. NULL if not mapped. */
+    const void             *pvBits;
+    /** Pointer to the user mapping. */
+    const void             *pvMapping;
+    /** Reserved flags. */
+    KU32                    f32Reserved;
+    /** The number of imported modules.
+     * If ~(KU32)0 this hasn't been determined yet. */
+    KU32                    cImportModules;
+    /** The offset of the NT headers. */
+    KLDRFOFF                offHdrs;
+    /** Copy of the NT headers. */
+    IMAGE_NT_HEADERS64      Hdrs;
+    /** The section header table . */
+    IMAGE_SECTION_HEADER    aShdrs[1];
+} KLDRMODPE, *PKLDRMODPE;
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static KI32 kldrModPENumberOfImports(PKLDRMOD pMod, const void *pvBits);
+static int  kldrModPERelocateBits(PKLDRMOD pMod, void *pvBits, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress,
+                                  PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+
+static int  kldrModPEDoCreate(PKRDR pRdr, KLDRFOFF offNewHdr, PKLDRMODPE *ppMod);
+/*static void kldrModPEDoLoadConfigConversion(PIMAGE_LOAD_CONFIG_DIRECTORY64 pLoadCfg); */
+static int  kLdrModPEDoOptionalHeaderValidation(PKLDRMODPE pModPE);
+static int  kLdrModPEDoSectionHeadersValidation(PKLDRMODPE pModPE);
+static void kldrModPEDoOptionalHeaderConversion(PIMAGE_OPTIONAL_HEADER64 pOptionalHeader);
+static int  kldrModPEDoForwarderQuery(PKLDRMODPE pModPE, const void *pvBits, const char *pszForwarder,
+                                     PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser, PKLDRADDR puValue, KU32 *pfKind);
+static int  kldrModPEDoFixups(PKLDRMODPE pModPE, void *pvMapping, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress);
+static int  kldrModPEDoImports32Bit(PKLDRMODPE pModPE, void *pvMapping, const IMAGE_IMPORT_DESCRIPTOR *pImpDesc,
+                                    PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+static int  kldrModPEDoImports64Bit(PKLDRMODPE pModPE, void *pvMapping, const IMAGE_IMPORT_DESCRIPTOR *pImpDesc,
+                                    PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+static int  kldrModPEDoImports(PKLDRMODPE pModPE, void *pvMapping, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser);
+static int  kldrModPEDoCallDLL(PKLDRMODPE pModPE, void *pvMapping, unsigned uOp, KUPTR uHandle);
+static int  kldrModPEDoCallTLS(PKLDRMODPE pModPE, void *pvMapping, unsigned uOp, KUPTR uHandle);
+
+
+/**
+ * Create a loader module instance interpreting the executable image found
+ * in the specified file provider instance.
+ *
+ * @returns 0 on success and *ppMod pointing to a module instance.
+ *          On failure, a non-zero OS specific error code is returned.
+ * @param   pOps            Pointer to the registered method table.
+ * @param   pRdr            The file provider instance to use.
+ * @param   fFlags          Flags, MBZ.
+ * @param   enmCpuArch      The desired CPU architecture. KCPUARCH_UNKNOWN means
+ *                          anything goes, but with a preference for the current
+ *                          host architecture.
+ * @param   offNewHdr       The offset of the new header in MZ files. -1 if not found.
+ * @param   ppMod           Where to store the module instance pointer.
+ */
+static int kldrModPECreate(PCKLDRMODOPS pOps, PKRDR pRdr, KU32 fFlags, KCPUARCH enmCpuArch, KLDRFOFF offNewHdr, PPKLDRMOD ppMod)
+{
+    PKLDRMODPE pModPE;
+    int rc;
+    K_NOREF(fFlags);
+
+    /*
+     * Create the instance data and do a minimal header validation.
+     */
+    rc = kldrModPEDoCreate(pRdr, offNewHdr, &pModPE);
+    if (!rc)
+    {
+        /*
+         * Match up against the requested CPU architecture.
+         */
+        if (    enmCpuArch == KCPUARCH_UNKNOWN
+            ||  pModPE->pMod->enmArch == enmCpuArch)
+        {
+            pModPE->pMod->pOps = pOps;
+            pModPE->pMod->u32Magic = KLDRMOD_MAGIC;
+            *ppMod = pModPE->pMod;
+            return 0;
+        }
+        rc = KLDR_ERR_CPU_ARCH_MISMATCH;
+    }
+    kHlpFree(pModPE);
+    return rc;
+}
+
+
+/**
+ * Separate function for reading creating the PE module instance to
+ * simplify cleanup on failure.
+ */
+static int kldrModPEDoCreate(PKRDR pRdr, KLDRFOFF offNewHdr, PKLDRMODPE *ppModPE)
+{
+    struct
+    {
+        KU32                Signature;
+        IMAGE_FILE_HEADER   FileHdr;
+    } s;
+    PKLDRMODPE pModPE;
+    PKLDRMOD pMod;
+    KSIZE cb;
+    KSIZE cchFilename;
+    KLDRFOFF off;
+    KU32 i;
+    int rc;
+    *ppModPE = NULL;
+
+    /*
+     * Read the signature and file header.
+     */
+    rc = kRdrRead(pRdr, &s, sizeof(s), offNewHdr > 0 ? offNewHdr : 0);
+    if (rc)
+        return rc;
+    if (s.Signature != IMAGE_NT_SIGNATURE)
+        return KLDR_ERR_UNKNOWN_FORMAT;
+
+    /* sanity checks. */
+    if (    s.FileHdr.NumberOfSections > 4096
+        ||  (   s.FileHdr.SizeOfOptionalHeader != sizeof(IMAGE_OPTIONAL_HEADER32)
+             && s.FileHdr.SizeOfOptionalHeader != sizeof(IMAGE_OPTIONAL_HEADER64))
+        ||  !(s.FileHdr.Characteristics & IMAGE_FILE_EXECUTABLE_IMAGE)
+       )
+        return KLDR_ERR_PE_BAD_FILE_HEADER;
+    if (    s.FileHdr.Machine != IMAGE_FILE_MACHINE_I386
+        &&  s.FileHdr.Machine != IMAGE_FILE_MACHINE_AMD64
+       )
+        return KLDR_ERR_PE_UNSUPPORTED_MACHINE;
+
+    /*
+     * Calc the instance size, allocate and initialize it.
+     */
+    cchFilename = kHlpStrLen(kRdrName(pRdr));
+    cb = K_ALIGN_Z(K_OFFSETOF(KLDRMODPE, aShdrs[s.FileHdr.NumberOfSections]), 16)
+       + K_OFFSETOF(KLDRMOD, aSegments[s.FileHdr.NumberOfSections + 1])
+       + cchFilename + 1;
+    pModPE = (PKLDRMODPE)kHlpAlloc(cb);
+    if (!pModPE)
+        return KERR_NO_MEMORY;
+    *ppModPE = pModPE;
+
+    /* KLDRMOD */
+    pMod = (PKLDRMOD)((KU8 *)pModPE + K_ALIGN_Z(K_OFFSETOF(KLDRMODPE, aShdrs[s.FileHdr.NumberOfSections]), 16));
+    pMod->pvData = pModPE;
+    pMod->pRdr = pRdr;
+    pMod->pOps = NULL;      /* set upon success. */
+    pMod->cSegments = s.FileHdr.NumberOfSections + 1;
+    pMod->cchFilename = (KU32)cchFilename;
+    pMod->pszFilename = (char *)&pMod->aSegments[pMod->cSegments];
+    kHlpMemCopy((char *)pMod->pszFilename, kRdrName(pRdr), cchFilename + 1);
+    pMod->pszName = kHlpGetFilename(pMod->pszFilename);
+    pMod->cchName = (KU32)(cchFilename - (pMod->pszName - pMod->pszFilename));
+    pMod->fFlags = 0;
+    switch (s.FileHdr.Machine)
+    {
+        case IMAGE_FILE_MACHINE_I386:
+            pMod->enmCpu = KCPU_I386;
+            pMod->enmArch = KCPUARCH_X86_32;
+            pMod->enmEndian = KLDRENDIAN_LITTLE;
+            break;
+
+        case IMAGE_FILE_MACHINE_AMD64:
+            pMod->enmCpu = KCPU_K8;
+            pMod->enmArch = KCPUARCH_AMD64;
+            pMod->enmEndian = KLDRENDIAN_LITTLE;
+            break;
+        default:
+            kHlpAssert(0);
+            break;
+    }
+    pMod->enmFmt = KLDRFMT_PE;
+    if (s.FileHdr.Characteristics & IMAGE_FILE_DLL)
+        pMod->enmType = !(s.FileHdr.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
+            ? KLDRTYPE_SHARED_LIBRARY_RELOCATABLE
+            : KLDRTYPE_SHARED_LIBRARY_FIXED;
+    else
+        pMod->enmType = !(s.FileHdr.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
+            ? KLDRTYPE_EXECUTABLE_RELOCATABLE
+            : KLDRTYPE_EXECUTABLE_FIXED;
+    pMod->u32Magic = 0;     /* set upon success. */
+
+    /* KLDRMODPE */
+    pModPE->pMod = pMod;
+    pModPE->pvBits = NULL;
+    pModPE->pvMapping = NULL;
+    pModPE->f32Reserved = 0;
+    pModPE->cImportModules = ~(KU32)0;
+    pModPE->offHdrs = offNewHdr >= 0 ? offNewHdr : 0;
+    pModPE->Hdrs.Signature = s.Signature;
+    pModPE->Hdrs.FileHeader = s.FileHdr;
+
+    /*
+     * Read the optional header and the section table.
+     */
+    off = pModPE->offHdrs + sizeof(pModPE->Hdrs.Signature) + sizeof(pModPE->Hdrs.FileHeader);
+    rc = kRdrRead(pRdr, &pModPE->Hdrs.OptionalHeader, pModPE->Hdrs.FileHeader.SizeOfOptionalHeader, off);
+    if (rc)
+        return rc;
+    if (pModPE->Hdrs.FileHeader.SizeOfOptionalHeader != sizeof(pModPE->Hdrs.OptionalHeader))
+        kldrModPEDoOptionalHeaderConversion(&pModPE->Hdrs.OptionalHeader);
+    off += pModPE->Hdrs.FileHeader.SizeOfOptionalHeader;
+    rc = kRdrRead(pRdr, &pModPE->aShdrs[0], sizeof(IMAGE_SECTION_HEADER) * pModPE->Hdrs.FileHeader.NumberOfSections, off);
+    if (rc)
+        return rc;
+
+    /*
+     * Validate the two.
+     */
+    rc = kLdrModPEDoOptionalHeaderValidation(pModPE);
+    if (rc)
+        return rc;
+    for (i = 0; i < pModPE->Hdrs.FileHeader.NumberOfSections; i++)
+    {
+        rc = kLdrModPEDoSectionHeadersValidation(pModPE);
+        if (rc)
+            return rc;
+    }
+
+    /*
+     * Setup the KLDRMOD segment array.
+     */
+    /* The implied headers section. */
+    pMod->aSegments[0].pvUser = NULL;
+    pMod->aSegments[0].pchName = "TheHeaders";
+    pMod->aSegments[0].cchName = sizeof("TheHeaders") - 1;
+    pMod->aSegments[0].enmProt = KPROT_READONLY;
+    pMod->aSegments[0].cb = pModPE->Hdrs.OptionalHeader.SizeOfHeaders;
+    pMod->aSegments[0].Alignment = pModPE->Hdrs.OptionalHeader.SectionAlignment;
+    pMod->aSegments[0].LinkAddress = pModPE->Hdrs.OptionalHeader.ImageBase;
+    pMod->aSegments[0].offFile = 0;
+    pMod->aSegments[0].cbFile = pModPE->Hdrs.OptionalHeader.SizeOfHeaders;
+    pMod->aSegments[0].RVA = 0;
+    if (pMod->cSegments > 1)
+        pMod->aSegments[0].cbMapped = pModPE->aShdrs[0].VirtualAddress;
+    else
+        pMod->aSegments[0].cbMapped = pModPE->Hdrs.OptionalHeader.SizeOfHeaders;
+    pMod->aSegments[0].MapAddress = 0;
+
+    /* The section headers. */
+    for (i = 0; i < pModPE->Hdrs.FileHeader.NumberOfSections; i++)
+    {
+        const char *pch;
+        KU32        cb2;
+
+        /* unused */
+        pMod->aSegments[i + 1].pvUser = NULL;
+        pMod->aSegments[i + 1].MapAddress = 0;
+        pMod->aSegments[i + 1].SelFlat = 0;
+        pMod->aSegments[i + 1].Sel16bit = 0;
+        pMod->aSegments[i + 1].fFlags = 0;
+
+        /* name */
+        pMod->aSegments[i + 1].pchName = pch = (const char *)&pModPE->aShdrs[i].Name[0];
+        cb2 = IMAGE_SIZEOF_SHORT_NAME;
+        while (   cb2 > 0
+               && (pch[cb2 - 1] == ' ' || pch[cb2 - 1] == '\0'))
+            cb2--;
+        pMod->aSegments[i + 1].cchName = cb2;
+
+        /* size and addresses */
+        if (!(pModPE->aShdrs[i].Characteristics & IMAGE_SCN_TYPE_NOLOAD))
+        {
+            /* Kluge to deal with wlink ".reloc" sections that has a VirtualSize of 0 bytes. */
+            cb2 = pModPE->aShdrs[i].Misc.VirtualSize;
+            if (!cb2)
+                cb2 = K_ALIGN_Z(pModPE->aShdrs[i].SizeOfRawData, pModPE->Hdrs.OptionalHeader.SectionAlignment);
+            pMod->aSegments[i + 1].cb          = pModPE->aShdrs[i].Misc.VirtualSize;
+            pMod->aSegments[i + 1].LinkAddress = pModPE->aShdrs[i].VirtualAddress
+                                               + pModPE->Hdrs.OptionalHeader.ImageBase;
+            pMod->aSegments[i + 1].RVA         = pModPE->aShdrs[i].VirtualAddress;
+            pMod->aSegments[i + 1].cbMapped    = cb2;
+            if (i + 2 < pMod->cSegments)
+                pMod->aSegments[i + 1].cbMapped= pModPE->aShdrs[i + 1].VirtualAddress
+                                               - pModPE->aShdrs[i].VirtualAddress;
+        }
+        else
+        {
+            pMod->aSegments[i + 1].cb          = 0;
+            pMod->aSegments[i + 1].cbMapped    = 0;
+            pMod->aSegments[i + 1].LinkAddress = NIL_KLDRADDR;
+            pMod->aSegments[i + 1].RVA         = 0;
+        }
+
+        /* file location */
+        pMod->aSegments[i + 1].offFile = pModPE->aShdrs[i].PointerToRawData;
+        pMod->aSegments[i + 1].cbFile  = pModPE->aShdrs[i].SizeOfRawData;
+        if (    pMod->aSegments[i + 1].cbMapped > 0 /* if mapped */
+            &&  (KLDRSIZE)pMod->aSegments[i + 1].cbFile > pMod->aSegments[i + 1].cbMapped)
+            pMod->aSegments[i + 1].cbFile = (KLDRFOFF)(pMod->aSegments[i + 1].cbMapped);
+
+        /* protection */
+        switch (  pModPE->aShdrs[i].Characteristics
+                & (IMAGE_SCN_MEM_SHARED | IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE))
+        {
+            case 0:
+            case IMAGE_SCN_MEM_SHARED:
+                pMod->aSegments[i + 1].enmProt = KPROT_NOACCESS;
+                break;
+            case IMAGE_SCN_MEM_READ:
+            case IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_SHARED:
+                pMod->aSegments[i + 1].enmProt = KPROT_READONLY;
+                break;
+            case IMAGE_SCN_MEM_WRITE:
+            case IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_READ:
+                pMod->aSegments[i + 1].enmProt = KPROT_WRITECOPY;
+                break;
+            case IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_SHARED:
+            case IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_SHARED | IMAGE_SCN_MEM_READ:
+                pMod->aSegments[i + 1].enmProt = KPROT_READWRITE;
+                break;
+            case IMAGE_SCN_MEM_EXECUTE:
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_SHARED:
+                pMod->aSegments[i + 1].enmProt = KPROT_EXECUTE;
+                break;
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ:
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_SHARED:
+                pMod->aSegments[i + 1].enmProt = KPROT_EXECUTE_READ;
+                break;
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_WRITE:
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_READ:
+                pMod->aSegments[i + 1].enmProt = KPROT_EXECUTE_WRITECOPY;
+                break;
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_SHARED:
+            case IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_SHARED | IMAGE_SCN_MEM_READ:
+                pMod->aSegments[i + 1].enmProt = KPROT_EXECUTE_READWRITE;
+                break;
+        }
+
+        /* alignment. */
+        switch (pModPE->aShdrs[i].Characteristics & IMAGE_SCN_ALIGN_MASK)
+        {
+            case 0: /* hope this is right... */
+                pMod->aSegments[i + 1].Alignment = pModPE->Hdrs.OptionalHeader.SectionAlignment;
+                break;
+            case IMAGE_SCN_ALIGN_1BYTES:        pMod->aSegments[i + 1].Alignment = 1; break;
+            case IMAGE_SCN_ALIGN_2BYTES:        pMod->aSegments[i + 1].Alignment = 2; break;
+            case IMAGE_SCN_ALIGN_4BYTES:        pMod->aSegments[i + 1].Alignment = 4; break;
+            case IMAGE_SCN_ALIGN_8BYTES:        pMod->aSegments[i + 1].Alignment = 8; break;
+            case IMAGE_SCN_ALIGN_16BYTES:       pMod->aSegments[i + 1].Alignment = 16; break;
+            case IMAGE_SCN_ALIGN_32BYTES:       pMod->aSegments[i + 1].Alignment = 32; break;
+            case IMAGE_SCN_ALIGN_64BYTES:       pMod->aSegments[i + 1].Alignment = 64; break;
+            case IMAGE_SCN_ALIGN_128BYTES:      pMod->aSegments[i + 1].Alignment = 128; break;
+            case IMAGE_SCN_ALIGN_256BYTES:      pMod->aSegments[i + 1].Alignment = 256; break;
+            case IMAGE_SCN_ALIGN_512BYTES:      pMod->aSegments[i + 1].Alignment = 512; break;
+            case IMAGE_SCN_ALIGN_1024BYTES:     pMod->aSegments[i + 1].Alignment = 1024; break;
+            case IMAGE_SCN_ALIGN_2048BYTES:     pMod->aSegments[i + 1].Alignment = 2048; break;
+            case IMAGE_SCN_ALIGN_4096BYTES:     pMod->aSegments[i + 1].Alignment = 4096; break;
+            case IMAGE_SCN_ALIGN_8192BYTES:     pMod->aSegments[i + 1].Alignment = 8192; break;
+            default: kHlpAssert(0);          pMod->aSegments[i + 1].Alignment = 0; break;
+        }
+    }
+
+    /*
+     * We're done.
+     */
+    *ppModPE = pModPE;
+    return 0;
+}
+
+
+/**
+ * Converts a 32-bit optional header to a 64-bit one
+ *
+ * @param   pOptHdr     The optional header to convert.
+ */
+static void kldrModPEDoOptionalHeaderConversion(PIMAGE_OPTIONAL_HEADER64 pOptHdr)
+{
+    /* volatile everywhere! */
+    IMAGE_OPTIONAL_HEADER32 volatile *pOptHdr32 = (IMAGE_OPTIONAL_HEADER32 volatile *)pOptHdr;
+    IMAGE_OPTIONAL_HEADER64 volatile *pOptHdr64 = pOptHdr;
+    KU32 volatile                    *pu32Dst;
+    KU32 volatile                    *pu32Src;
+    KU32 volatile                    *pu32SrcLast;
+    KU32                              u32;
+
+    /* From LoaderFlags and out the difference is 4 * 32-bits. */
+    pu32Dst     = (KU32 *)&pOptHdr64->DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES] - 1;
+    pu32Src     = (KU32 *)&pOptHdr32->DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES] - 1;
+    pu32SrcLast = (KU32 *)&pOptHdr32->LoaderFlags;
+    while (pu32Src >= pu32SrcLast)
+        *pu32Dst-- = *pu32Src--;
+
+    /* The previous 4 fields are 32/64 and needs special attention. */
+    pOptHdr64->SizeOfHeapCommit   = pOptHdr32->SizeOfHeapCommit;
+    pOptHdr64->SizeOfHeapReserve  = pOptHdr32->SizeOfHeapReserve;
+    pOptHdr64->SizeOfStackCommit  = pOptHdr32->SizeOfStackCommit;
+    u32 = pOptHdr32->SizeOfStackReserve;
+    pOptHdr64->SizeOfStackReserve = u32;
+
+    /*
+     * The rest matches except for BaseOfData which has been merged into ImageBase in the 64-bit version.
+     * Thus, ImageBase needs some special treatement. It will probably work fine assigning one to the
+     * other since this is all declared volatile, but taking now chances, we'll use a temp variable.
+     */
+    u32 = pOptHdr32->ImageBase;
+    pOptHdr64->ImageBase = u32;
+}
+
+
+#if 0
+/**
+ * Converts a 32-bit load config directory to a 64 bit one.
+ *
+ * @param   pOptHdr     The load config to convert.
+ */
+static void kldrModPEDoLoadConfigConversion(PIMAGE_LOAD_CONFIG_DIRECTORY64 pLoadCfg)
+{
+    /* volatile everywhere! */
+    IMAGE_LOAD_CONFIG_DIRECTORY32 volatile *pLoadCfg32 = (IMAGE_LOAD_CONFIG_DIRECTORY32 volatile *)pLoadCfg;
+    IMAGE_LOAD_CONFIG_DIRECTORY64 volatile *pLoadCfg64 = pLoadCfg;
+    KU32                                    u32;
+
+    pLoadCfg64->SEHandlerCount             = pLoadCfg32->SEHandlerCount;
+    pLoadCfg64->SEHandlerTable             = pLoadCfg32->SEHandlerTable;
+    pLoadCfg64->SecurityCookie             = pLoadCfg32->SecurityCookie;
+    pLoadCfg64->EditList                   = pLoadCfg32->EditList;
+    pLoadCfg64->Reserved1                  = pLoadCfg32->Reserved1;
+    pLoadCfg64->CSDVersion                 = pLoadCfg32->CSDVersion;
+    /* (ProcessHeapFlags switched place with ProcessAffinityMask, but we're
+     * more than 16 byte off by now so it doesn't matter.) */
+    pLoadCfg64->ProcessHeapFlags           = pLoadCfg32->ProcessHeapFlags;
+    pLoadCfg64->ProcessAffinityMask        = pLoadCfg32->ProcessAffinityMask;
+    pLoadCfg64->VirtualMemoryThreshold     = pLoadCfg32->VirtualMemoryThreshold;
+    pLoadCfg64->MaximumAllocationSize      = pLoadCfg32->MaximumAllocationSize;
+    pLoadCfg64->LockPrefixTable            = pLoadCfg32->LockPrefixTable;
+    pLoadCfg64->DeCommitTotalFreeThreshold = pLoadCfg32->DeCommitTotalFreeThreshold;
+    u32 = pLoadCfg32->DeCommitFreeBlockThreshold;
+    pLoadCfg64->DeCommitFreeBlockThreshold = u32;
+    /* the remainder matches. */
+}
+#endif
+
+
+/**
+ * Internal worker which validates the section headers.
+ */
+static int kLdrModPEDoOptionalHeaderValidation(PKLDRMODPE pModPE)
+{
+    const unsigned fIs32Bit = pModPE->Hdrs.FileHeader.SizeOfOptionalHeader == sizeof(IMAGE_OPTIONAL_HEADER32);
+
+    /* the magic */
+    if (    pModPE->Hdrs.OptionalHeader.Magic
+        !=  (fIs32Bit ? IMAGE_NT_OPTIONAL_HDR32_MAGIC : IMAGE_NT_OPTIONAL_HDR64_MAGIC))
+        return KLDR_ERR_PE_BAD_OPTIONAL_HEADER;
+
+    /** @todo validate more */
+    return 0;
+}
+
+
+/**
+ * Internal worker which validates the section headers.
+ */
+static int kLdrModPEDoSectionHeadersValidation(PKLDRMODPE pModPE)
+{
+    /** @todo validate shdrs */
+    K_NOREF(pModPE);
+    return 0;
+}
+
+
+/** @copydoc KLDRMODOPS::pfnDestroy */
+static int kldrModPEDestroy(PKLDRMOD pMod)
+{
+    PKLDRMODPE pModPE = (PKLDRMODPE)pMod->pvData;
+    int rc = 0;
+    KLDRMODPE_ASSERT(!pModPE->pvMapping);
+
+    if (pMod->pRdr)
+    {
+        rc = kRdrClose(pMod->pRdr);
+        pMod->pRdr = NULL;
+    }
+    pMod->u32Magic = 0;
+    pMod->pOps = NULL;
+    kHlpFree(pModPE);
+    return rc;
+}
+
+
+/**
+ * Performs the mapping of the image.
+ *
+ * This can be used to do the internal mapping as well as the
+ * user requested mapping. fForReal indicates which is desired.
+ *
+ * @returns 0 on success, non-zero OS or kLdr status code on failure.
+ * @param   pModPE          The interpreter module instance
+ * @param   fForReal        If set, do the user mapping. if clear, do the internal mapping.
+ */
+static int kldrModPEDoMap(PKLDRMODPE pModPE, unsigned fForReal)
+{
+    PKLDRMOD    pMod = pModPE->pMod;
+    KBOOL       fFixed;
+    void       *pvBase;
+    int         rc;
+    KU32        i;
+
+    /*
+     * Map it.
+     */
+    /* fixed image? */
+    fFixed = fForReal
+          && (   pMod->enmType == KLDRTYPE_EXECUTABLE_FIXED
+              || pMod->enmType == KLDRTYPE_SHARED_LIBRARY_FIXED);
+    if (!fFixed)
+        pvBase = NULL;
+    else
+    {
+        pvBase = (void *)(KUPTR)pMod->aSegments[0].LinkAddress;
+        if ((KUPTR)pvBase != pMod->aSegments[0].LinkAddress)
+            return KLDR_ERR_ADDRESS_OVERFLOW;
+    }
+
+    /* try do the prepare */
+    rc = kRdrMap(pMod->pRdr, &pvBase, pMod->cSegments, pMod->aSegments, fFixed);
+    if (rc)
+        return rc;
+
+    /*
+     * Update the segments with their map addresses.
+     */
+    if (fForReal)
+    {
+        for (i = 0; i < pMod->cSegments; i++)
+        {
+            if (pMod->aSegments[i].RVA != NIL_KLDRADDR)
+                pMod->aSegments[i].MapAddress = (KUPTR)pvBase + (KUPTR)pMod->aSegments[i].RVA;
+        }
+        pModPE->pvMapping = pvBase;
+    }
+    else
+        pModPE->pvBits = pvBase;
+    return 0;
+}
+
+
+/**
+ * Unmaps a image mapping.
+ *
+ * This can be used to do the internal mapping as well as the
+ * user requested mapping. fForReal indicates which is desired.
+ *
+ * @returns 0 on success, non-zero OS or kLdr status code on failure.
+ * @param   pModPE          The interpreter module instance
+ * @param   pvMapping       The mapping to unmap.
+ */
+static int kldrModPEDoUnmap(PKLDRMODPE pModPE, const void *pvMapping)
+{
+    PKLDRMOD    pMod = pModPE->pMod;
+    int         rc;
+    KU32        i;
+
+    /*
+     * Try unmap the image.
+     */
+    rc = kRdrUnmap(pMod->pRdr, (void *)pvMapping, pMod->cSegments, pMod->aSegments);
+    if (rc)
+        return rc;
+
+    /*
+     * Update the segments to reflect that they aren't mapped any longer.
+     */
+    if (pModPE->pvMapping == pvMapping)
+    {
+        pModPE->pvMapping = NULL;
+        for (i = 0; i < pMod->cSegments; i++)
+            pMod->aSegments[i].MapAddress = 0;
+    }
+    if (pModPE->pvBits == pvMapping)
+        pModPE->pvBits = NULL;
+
+    return 0;
+}
+
+
+/**
+ * Gets usable bits and the right base address.
+ *
+ * @returns 0 on success.
+ * @returns A non-zero status code if the BaseAddress isn't right or some problem is encountered
+ *          featch in a temp mapping the bits.
+ * @param   pModPE          The interpreter module instance
+ * @param   ppvBits         The bits address, IN & OUT.
+ * @param   pBaseAddress    The base address, IN & OUT. Optional.
+ */
+static int kldrModPEBitsAndBaseAddress(PKLDRMODPE pModPE, const void **ppvBits, PKLDRADDR pBaseAddress)
+{
+    int rc = 0;
+
+    /*
+     * Correct the base address.
+     *
+     * We don't use the base address for interpreting the bits in this
+     * interpreter, which makes things relativly simple.
+     */
+    if (pBaseAddress)
+    {
+        if (*pBaseAddress == KLDRMOD_BASEADDRESS_MAP)
+            *pBaseAddress = pModPE->pMod->aSegments[0].MapAddress;
+        else if (*pBaseAddress == KLDRMOD_BASEADDRESS_LINK)
+            *pBaseAddress = pModPE->Hdrs.OptionalHeader.ImageBase;
+    }
+
+    /*
+     * Get bits.
+     */
+    if (ppvBits && !*ppvBits)
+    {
+        if (pModPE->pvMapping)
+            *ppvBits = pModPE->pvMapping;
+        else if (pModPE->pvBits)
+            *ppvBits = pModPE->pvBits;
+        else
+        {
+            /* create an internal mapping. */
+            rc = kldrModPEDoMap(pModPE, 0 /* not for real */);
+            if (rc)
+                return rc;
+            KLDRMODPE_ASSERT(pModPE->pvBits);
+            *ppvBits = pModPE->pvBits;
+        }
+    }
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModQuerySymbol */
+static int kldrModPEQuerySymbol(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, KU32 iSymbol,
+                                const char *pchSymbol, KSIZE cchSymbol, const char *pszVersion,
+                                PFNKLDRMODGETIMPORT pfnGetForwarder, void *pvUser, PKLDRADDR puValue, KU32 *pfKind)
+
+{
+    PKLDRMODPE                      pModPE = (PKLDRMODPE)pMod->pvData;
+    const KU32                     *paExportRVAs;
+    const IMAGE_EXPORT_DIRECTORY   *pExpDir;
+    KU32                            iExpOrd;
+    KU32                            uRVA;
+    int                             rc;
+
+    /*
+     * Make sure we've got mapped bits and resolve any base address aliases.
+     */
+    rc = kldrModPEBitsAndBaseAddress(pModPE, &pvBits, &BaseAddress);
+    if (rc)
+        return rc;
+    if (    pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size
+        <   sizeof(IMAGE_EXPORT_DIRECTORY))
+        return KLDR_ERR_SYMBOL_NOT_FOUND;
+    if (pszVersion && *pszVersion)
+        return KLDR_ERR_SYMBOL_NOT_FOUND;
+
+    pExpDir = KLDRMODPE_RVA2TYPE(pvBits,
+                                 pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress,
+                                 PIMAGE_EXPORT_DIRECTORY);
+    if (!pchSymbol)
+    {
+        /*
+         * Simple, calculate the unbased ordinal and bounds check it.
+         */
+        iExpOrd = iSymbol - pExpDir->Base;
+        if (iExpOrd >= K_MAX(pExpDir->NumberOfNames, pExpDir->NumberOfFunctions))
+            return KLDR_ERR_SYMBOL_NOT_FOUND;
+    }
+    else
+    {
+        /*
+         * Do a binary search for the name.
+         * (The name table is sorted in ascending ordered by the linker.)
+         */
+        const KU32 *paRVANames = KLDRMODPE_RVA2TYPE(pvBits, pExpDir->AddressOfNames, const KU32 *);
+        const KU16 *paOrdinals = KLDRMODPE_RVA2TYPE(pvBits, pExpDir->AddressOfNameOrdinals, const KU16 *);
+        KI32        iStart = 1; /* one based binary searching is simpler. */
+        KI32        iEnd = pExpDir->NumberOfNames;
+
+        for (;;)
+        {
+            KI32        i;
+            int         diff;
+            const char *pszName;
+
+            /* done? */
+            if (iStart > iEnd)
+            {
+#ifdef KLDRMODPE_STRICT /* Make sure the linker and we both did our job right. */
+                for (i = 0; i < (KI32)pExpDir->NumberOfNames; i++)
+
+                {
+                    pszName = KLDRMODPE_RVA2TYPE(pvBits, paRVANames[i], const char *);
+                    KLDRMODPE_ASSERT(kHlpStrNComp(pszName, pchSymbol, cchSymbol) || pszName[cchSymbol]);
+                    KLDRMODPE_ASSERT(i == 0 || kHlpStrComp(pszName, KLDRMODPE_RVA2TYPE(pvBits, paRVANames[i - 1], const char *)));
+                }
+#endif
+                return KLDR_ERR_SYMBOL_NOT_FOUND;
+            }
+
+            i = (iEnd - iStart) / 2 + iStart;
+            pszName = KLDRMODPE_RVA2TYPE(pvBits, paRVANames[i - 1], const char *);
+            diff = kHlpStrNComp(pszName, pchSymbol, cchSymbol);
+            if (!diff)
+                diff = pszName[cchSymbol] - 0;
+            if (diff < 0)
+                iStart = i + 1;     /* The symbol must be after the current name. */
+            else if (diff)
+                iEnd = i - 1;       /* The symbol must be before the current name. */
+            else
+            {
+                iExpOrd = paOrdinals[i - 1];    /* match! */
+                break;
+            }
+        }
+    }
+
+    /*
+     * Lookup the address in the 'symbol' table.
+     */
+    paExportRVAs = KLDRMODPE_RVA2TYPE(pvBits, pExpDir->AddressOfFunctions, const KU32 *);
+    uRVA = paExportRVAs[iExpOrd];
+    if (    uRVA - pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress
+        <   pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size)
+        return kldrModPEDoForwarderQuery(pModPE, pvBits, KLDRMODPE_RVA2TYPE(pvBits, uRVA, const char *),
+                                         pfnGetForwarder, pvUser, puValue, pfKind);
+
+    /*
+     * Set the return value.
+     */
+    if (puValue)
+        *puValue = BaseAddress + uRVA;
+    if (pfKind)
+        *pfKind = (pModPE->Hdrs.FileHeader.SizeOfOptionalHeader == sizeof(IMAGE_OPTIONAL_HEADER32)
+                   ? KLDRSYMKIND_32BIT : KLDRSYMKIND_64BIT)
+                | KLDRSYMKIND_NO_TYPE;
+    return 0;
+}
+
+
+/**
+ * Deal with a forwarder entry.
+ *
+ * We do this seprately from kldrModPEQuerySymbol because the code is clumsy (as is all PE code
+ * thanks to the descriptive field names), and because it uses quite a bit more stack and we're
+ * trying to avoid allocating stack unless we have to.
+ *
+ * @returns See kLdrModQuerySymbol.
+ * @param   pModPE          The PE module interpreter instance.
+ * @param   pvBits          Where to read the image from.
+ * @param   pszForwarder    The forwarder entry name.
+ * @param   pfnGetForwarder The callback for resolving forwarder symbols. (optional)
+ * @param   pvUser          The user argument for the callback.
+ * @param   puValue         Where to put the value. (optional)
+ * @param   pfKind          Where to put the symbol kind. (optional)
+ */
+static int kldrModPEDoForwarderQuery(PKLDRMODPE pModPE, const void *pvBits, const char *pszForwarder,
+                                     PFNKLDRMODGETIMPORT pfnGetForwarder, void *pvUser, PKLDRADDR puValue, KU32 *pfKind)
+{
+    const IMAGE_IMPORT_DESCRIPTOR *paImpDir;
+    KU32            iImpModule;
+    KU32            cchImpModule;
+    const char     *pszSymbol;
+    KU32            iSymbol;
+    int             rc;
+
+    if (!pfnGetForwarder)
+        return KLDR_ERR_FORWARDER_SYMBOL;
+
+    /*
+     * Separate the name into a module name and a symbol name or ordinal.
+     *
+     * The module name ends at the first dot ('.').
+     * After the dot follows either a symbol name or a hash ('#') + ordinal.
+     */
+    pszSymbol = pszForwarder;
+    while (*pszSymbol != '.')
+        pszSymbol++;
+    if (!*pszSymbol)
+        return KLDR_ERR_PE_BAD_FORWARDER;
+    cchImpModule = (KU32)(pszSymbol - pszForwarder);
+
+    pszSymbol++;                        /* skip the dot */
+    if (!*pszSymbol)
+        return KLDR_ERR_PE_BAD_FORWARDER;
+    if (*pszSymbol == '#')
+    {
+        unsigned uBase;
+        pszSymbol++;                    /* skip the hash */
+
+        /* base detection */
+        uBase = 10;
+        if (pszSymbol[0] == '0' &&  (pszSymbol[1] == 'x' || pszSymbol[1] == 'X'))
+        {
+            uBase = 16;
+            pszSymbol += 2;
+        }
+
+        /* ascii to integer */
+        iSymbol = 0;
+        for (;;)
+        {
+            /* convert char to digit. */
+            unsigned uDigit = *pszSymbol++;
+            if (uDigit >= '0' && uDigit <= '9')
+                uDigit -= '0';
+            else if (uDigit >= 'a' && uDigit <= 'z')
+                uDigit -= 'a' + 10;
+            else if (uDigit >= 'A' && uDigit <= 'Z')
+                uDigit -= 'A' + 10;
+            else if (!uDigit)
+                break;
+            else
+                return KLDR_ERR_PE_BAD_FORWARDER;
+            if (uDigit >= uBase)
+                return KLDR_ERR_PE_BAD_FORWARDER;
+
+            /* insert the digit */
+            iSymbol *= uBase;
+            iSymbol += uDigit;
+        }
+
+        pszSymbol = NULL;               /* no symbol name. */
+    }
+    else
+        iSymbol = NIL_KLDRMOD_SYM_ORDINAL; /* no ordinal number. */
+
+
+    /*
+     * Find the import module name.
+     *
+     * We ASSUME the linker will make sure there is an import
+     * entry for the module... not sure if this is right though.
+     */
+    if (    !pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].Size
+        ||  !pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress)
+        return KLDR_ERR_PE_FORWARDER_IMPORT_NOT_FOUND;
+    paImpDir = KLDRMODPE_RVA2TYPE(pvBits,
+                                  pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress,
+                                  const IMAGE_IMPORT_DESCRIPTOR *);
+
+    kldrModPENumberOfImports(pModPE->pMod, pvBits);
+    for (iImpModule = 0; iImpModule < pModPE->cImportModules; iImpModule++)
+    {
+        const char *pszName = KLDRMODPE_RVA2TYPE(pvBits, paImpDir[iImpModule].Name, const char *);
+        KSIZE       cchName = kHlpStrLen(pszName);
+        if (    (   cchName == cchImpModule
+                 || (   cchName > cchImpModule
+                     && pszName[cchImpModule] == '.'
+                     && (pszName[cchImpModule + 1] == 'd' || pszName[cchImpModule + 1] == 'D')
+                     && (pszName[cchImpModule + 2] == 'l' || pszName[cchImpModule + 2] == 'L')
+                     && (pszName[cchImpModule + 3] == 'l' || pszName[cchImpModule + 3] == 'L'))
+                )
+            &&  kHlpMemICompAscii(pszName, pszForwarder, cchImpModule)
+           )
+        {
+            /*
+             * Now the rest is up to the callback (almost).
+             */
+            rc = pfnGetForwarder(pModPE->pMod, iImpModule, iSymbol, pszSymbol,
+                                 pszSymbol ? kHlpStrLen(pszSymbol) : 0, NULL, puValue, pfKind, pvUser);
+            if (!rc && pfKind)
+                *pfKind |= KLDRSYMKIND_FORWARDER;
+            return rc;
+        }
+    }
+    return KLDR_ERR_PE_FORWARDER_IMPORT_NOT_FOUND;
+}
+
+
+/** @copydoc kLdrModEnumSymbols */
+static int kldrModPEEnumSymbols(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress,
+                                KU32 fFlags, PFNKLDRMODENUMSYMS pfnCallback, void *pvUser)
+{
+    PKLDRMODPE                      pModPE = (PKLDRMODPE)pMod->pvData;
+    const KU32                     *paFunctions;
+    const IMAGE_EXPORT_DIRECTORY   *pExpDir;
+    const KU32                     *paRVANames;
+    const KU16                     *paOrdinals;
+    KU32                            iFunction;
+    KU32                            cFunctions;
+    KU32                            cNames;
+    int                             rc;
+    K_NOREF(fFlags);
+
+    /*
+     * Make sure we've got mapped bits and resolve any base address aliases.
+     */
+    rc = kldrModPEBitsAndBaseAddress(pModPE, &pvBits, &BaseAddress);
+    if (rc)
+        return rc;
+
+    if (    pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size
+        <   sizeof(IMAGE_EXPORT_DIRECTORY))
+        return 0; /* no exports to enumerate, return success. */
+
+    pExpDir = KLDRMODPE_RVA2TYPE(pvBits,
+                                 pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress,
+                                 PIMAGE_EXPORT_DIRECTORY);
+
+    /*
+     * Enumerate the ordinal exports.
+     */
+    paRVANames = KLDRMODPE_RVA2TYPE(pvBits, pExpDir->AddressOfNames, const KU32 *);
+    paOrdinals = KLDRMODPE_RVA2TYPE(pvBits, pExpDir->AddressOfNameOrdinals, const KU16 *);
+    paFunctions = KLDRMODPE_RVA2TYPE(pvBits, pExpDir->AddressOfFunctions, const KU32 *);
+    cFunctions = pExpDir->NumberOfFunctions;
+    cNames = pExpDir->NumberOfNames;
+    for (iFunction = 0; iFunction < cFunctions; iFunction++)
+    {
+        unsigned        fFoundName;
+        KU32            iName;
+        const KU32      uRVA = paFunctions[iFunction];
+        const KLDRADDR  uValue = BaseAddress + uRVA;
+        KU32            fKind = (pModPE->Hdrs.FileHeader.SizeOfOptionalHeader == sizeof(IMAGE_OPTIONAL_HEADER32)
+                              ? KLDRSYMKIND_32BIT : KLDRSYMKIND_64BIT)
+                              | KLDRSYMKIND_NO_TYPE;
+        if (    uRVA - pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress
+            <   pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size)
+            fKind |= KLDRSYMKIND_FORWARDER;
+
+        /*
+         * Any symbol names?
+         */
+        fFoundName = 0;
+        for (iName = 0; iName < cNames; iName++)
+        {
+            const char *pszName;
+            if (paOrdinals[iName] != iFunction)
+                continue;
+            fFoundName = 1;
+            pszName = KLDRMODPE_RVA2TYPE(pvBits, paRVANames[iName], const char *);
+            rc = pfnCallback(pMod, iFunction + pExpDir->Base, pszName, kHlpStrLen(pszName), NULL,
+                             uValue, fKind, pvUser);
+            if (rc)
+                return rc;
+        }
+
+        /*
+         * If no names, call once with the ordinal only.
+         */
+        if (!fFoundName)
+        {
+            rc = pfnCallback(pMod, iFunction + pExpDir->Base, NULL, 0, NULL, uValue, fKind, pvUser);
+            if (rc)
+                return rc;
+        }
+    }
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModGetImport */
+static int kldrModPEGetImport(PKLDRMOD pMod, const void *pvBits, KU32 iImport, char *pszName, KSIZE cchName)
+{
+    PKLDRMODPE                      pModPE = (PKLDRMODPE)pMod->pvData;
+    const IMAGE_IMPORT_DESCRIPTOR  *pImpDesc;
+    const char                     *pszImportName;
+    KSIZE                           cchImportName;
+    int                             rc;
+
+    /*
+     * Make sure we've got mapped bits and resolve any base address aliases.
+     */
+    rc = kldrModPEBitsAndBaseAddress(pModPE, &pvBits, NULL);
+    if (rc)
+        return rc;
+
+    /*
+     * Simple bounds check.
+     */
+    if (iImport >= (KU32)kldrModPENumberOfImports(pMod, pvBits))
+        return KLDR_ERR_IMPORT_ORDINAL_OUT_OF_BOUNDS;
+
+    /*
+     * Get the name.
+     */
+    pImpDesc = KLDRMODPE_RVA2TYPE(pvBits,
+                                  pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress
+                                  + sizeof(IMAGE_IMPORT_DESCRIPTOR) * iImport,
+                                  const IMAGE_IMPORT_DESCRIPTOR *);
+    pszImportName = KLDRMODPE_RVA2TYPE(pvBits, pImpDesc->Name, const char *);
+    cchImportName = kHlpStrLen(pszImportName);
+    if (cchImportName < cchName)
+    {
+        kHlpMemCopy(pszName, pszImportName, cchImportName + 1);
+        rc = 0;
+    }
+    else
+    {
+        kHlpMemCopy(pszName, pszImportName, cchName);
+        if (cchName)
+            pszName[cchName - 1] = '\0';
+        rc = KERR_BUFFER_OVERFLOW;
+    }
+
+    return rc;
+}
+
+
+/** @copydoc kLdrModNumberOfImports */
+static KI32 kldrModPENumberOfImports(PKLDRMOD pMod, const void *pvBits)
+{
+    PKLDRMODPE pModPE = (PKLDRMODPE)pMod->pvData;
+    if (pModPE->cImportModules == ~(KU32)0)
+    {
+        /*
+         * We'll have to walk the import descriptors to figure out their number.
+         * First, make sure we've got mapped bits.
+         */
+        if (kldrModPEBitsAndBaseAddress(pModPE, &pvBits, NULL))
+            return -1;
+        pModPE->cImportModules = 0;
+        if (    pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].Size
+            &&  pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress)
+        {
+            const IMAGE_IMPORT_DESCRIPTOR  *pImpDesc;
+
+            pImpDesc = KLDRMODPE_RVA2TYPE(pvBits,
+                                          pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress,
+                                          const IMAGE_IMPORT_DESCRIPTOR *);
+            while (pImpDesc->Name && pImpDesc->FirstThunk)
+            {
+                pModPE->cImportModules++;
+                pImpDesc++;
+            }
+        }
+    }
+    return pModPE->cImportModules;
+}
+
+
+/** @copydoc kLdrModGetStackInfo */
+static int kldrModPEGetStackInfo(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRSTACKINFO pStackInfo)
+{
+    PKLDRMODPE pModPE = (PKLDRMODPE)pMod->pvData;
+    K_NOREF(pvBits);
+    K_NOREF(BaseAddress);
+
+    pStackInfo->Address = NIL_KLDRADDR;
+    pStackInfo->LinkAddress = NIL_KLDRADDR;
+    pStackInfo->cbStack = pStackInfo->cbStackThread = pModPE->Hdrs.OptionalHeader.SizeOfStackReserve;
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModQueryMainEntrypoint */
+static int kldrModPEQueryMainEntrypoint(PKLDRMOD pMod, const void *pvBits, KLDRADDR BaseAddress, PKLDRADDR pMainEPAddress)
+{
+    PKLDRMODPE pModPE = (PKLDRMODPE)pMod->pvData;
+    int rc;
+    K_NOREF(pvBits);
+
+    /*
+     * Resolve base address alias if any.
+     */
+    rc = kldrModPEBitsAndBaseAddress(pModPE, NULL, &BaseAddress);
+    if (rc)
+        return rc;
+
+    /*
+     * Convert the address from the header.
+     */
+    *pMainEPAddress = pModPE->Hdrs.OptionalHeader.AddressOfEntryPoint
+        ? BaseAddress + pModPE->Hdrs.OptionalHeader.AddressOfEntryPoint
+        : NIL_KLDRADDR;
+    return 0;
+}
+
+
+/** @copydoc kLdrModEnumDbgInfo */
+static int kldrModPEEnumDbgInfo(PKLDRMOD pMod, const void *pvBits, PFNKLDRENUMDBG pfnCallback, void *pvUser)
+{
+    PKLDRMODPE                      pModPE = (PKLDRMODPE)pMod->pvData;
+    const IMAGE_DEBUG_DIRECTORY    *pDbgDir;
+    KU32                            iDbgInfo;
+    KU32                            cb;
+    int                             rc;
+
+    /*
+     * Check that there is a debug directory first.
+     */
+    cb = pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].Size;
+    if (    cb < sizeof(IMAGE_DEBUG_DIRECTORY) /* screw borland linkers */
+        ||  !pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress)
+        return 0;
+
+    /*
+     * Make sure we've got mapped bits.
+     */
+    rc = kldrModPEBitsAndBaseAddress(pModPE, &pvBits, NULL);
+    if (rc)
+        return rc;
+
+    /*
+     * Enumerate the debug directory.
+     */
+    pDbgDir = KLDRMODPE_RVA2TYPE(pvBits,
+                                 pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress,
+                                 const IMAGE_DEBUG_DIRECTORY *);
+    for (iDbgInfo = 0;; iDbgInfo++, pDbgDir++, cb -= sizeof(IMAGE_DEBUG_DIRECTORY))
+    {
+        KLDRDBGINFOTYPE     enmDbgInfoType;
+
+        /* convert the type. */
+        switch (pDbgDir->Type)
+        {
+            case IMAGE_DEBUG_TYPE_UNKNOWN:
+            case IMAGE_DEBUG_TYPE_FPO:
+            case IMAGE_DEBUG_TYPE_COFF: /*stabs dialect??*/
+            case IMAGE_DEBUG_TYPE_MISC:
+            case IMAGE_DEBUG_TYPE_EXCEPTION:
+            case IMAGE_DEBUG_TYPE_FIXUP:
+            case IMAGE_DEBUG_TYPE_BORLAND:
+            default:
+                enmDbgInfoType = KLDRDBGINFOTYPE_UNKNOWN;
+                break;
+            case IMAGE_DEBUG_TYPE_CODEVIEW:
+                enmDbgInfoType = KLDRDBGINFOTYPE_CODEVIEW;
+                break;
+        }
+
+        rc = pfnCallback(pMod, iDbgInfo,
+                         enmDbgInfoType, pDbgDir->MajorVersion, pDbgDir->MinorVersion, NULL,
+                         pDbgDir->PointerToRawData ? (KLDRFOFF)pDbgDir->PointerToRawData : -1,
+                         pDbgDir->AddressOfRawData ? pDbgDir->AddressOfRawData : NIL_KLDRADDR,
+                         pDbgDir->SizeOfData,
+                         NULL,
+                         pvUser);
+        if (rc)
+            break;
+
+        /* next */
+        if (cb <= sizeof(IMAGE_DEBUG_DIRECTORY))
+            break;
+    }
+
+    return rc;
+}
+
+
+/** @copydoc kLdrModHasDbgInfo */
+static int kldrModPEHasDbgInfo(PKLDRMOD pMod, const void *pvBits)
+{
+    PKLDRMODPE pModPE = (PKLDRMODPE)pMod->pvData;
+    K_NOREF(pvBits);
+
+    /*
+     * Base this entirely on the presence of a debug directory.
+     */
+    if (    pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].Size
+            < sizeof(IMAGE_DEBUG_DIRECTORY) /* screw borland linkers */
+        ||  !pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress)
+        return KLDR_ERR_NO_DEBUG_INFO;
+    return 0;
+}
+
+
+/** @copydoc kLdrModMap */
+static int kldrModPEMap(PKLDRMOD pMod)
+{
+    PKLDRMODPE  pModPE = (PKLDRMODPE)pMod->pvData;
+    int         rc;
+
+    /*
+     * Already mapped?
+     */
+    if (pModPE->pvMapping)
+        return KLDR_ERR_ALREADY_MAPPED;
+
+    /*
+     * We've got a common worker which does this.
+     */
+    rc = kldrModPEDoMap(pModPE, 1 /* the real thing */);
+    if (rc)
+        return rc;
+    KLDRMODPE_ASSERT(pModPE->pvMapping);
+    return 0;
+}
+
+
+/** @copydoc kLdrModUnmap */
+static int kldrModPEUnmap(PKLDRMOD pMod)
+{
+    PKLDRMODPE  pModPE = (PKLDRMODPE)pMod->pvData;
+    int         rc;
+
+    /*
+     * Mapped?
+     */
+    if (!pModPE->pvMapping)
+        return KLDR_ERR_NOT_MAPPED;
+
+    /*
+     * We've got a common worker which does this.
+     */
+    rc = kldrModPEDoUnmap(pModPE, pModPE->pvMapping);
+    if (rc)
+        return rc;
+    KLDRMODPE_ASSERT(!pModPE->pvMapping);
+    return 0;
+
+}
+
+
+/** @copydoc kLdrModAllocTLS */
+static int kldrModPEAllocTLS(PKLDRMOD pMod, void *pvMapping)
+{
+    PKLDRMODPE  pModPE = (PKLDRMODPE)pMod->pvData;
+
+    /*
+     * Mapped?
+     */
+    if (pvMapping == KLDRMOD_INT_MAP)
+    {
+        pvMapping = (void *)pModPE->pvMapping;
+        if (!pvMapping)
+            return KLDR_ERR_NOT_MAPPED;
+    }
+
+    /*
+     * If no TLS directory then there is nothing to do.
+     */
+    if (    !pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_TLS].Size
+        ||  !pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_TLS].VirtualAddress)
+        return 0;
+    /** @todo implement TLS. */
+    return -1;
+}
+
+
+/** @copydoc kLdrModFreeTLS */
+static void kldrModPEFreeTLS(PKLDRMOD pMod, void *pvMapping)
+{
+    PKLDRMODPE  pModPE = (PKLDRMODPE)pMod->pvData;
+
+    /*
+     * Mapped?
+     */
+    if (pvMapping == KLDRMOD_INT_MAP)
+    {
+        pvMapping = (void *)pModPE->pvMapping;
+        if (!pvMapping)
+            return;
+    }
+
+    /*
+     * If no TLS directory then there is nothing to do.
+     */
+    if (    !pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_TLS].Size
+        ||  !pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_TLS].VirtualAddress)
+        return;
+    /** @todo implement TLS. */
+    return;
+}
+
+
+/** @copydoc kLdrModReload */
+static int kldrModPEReload(PKLDRMOD pMod)
+{
+    PKLDRMODPE pModPE = (PKLDRMODPE)pMod->pvData;
+
+    /*
+     * Mapped?
+     */
+    if (!pModPE->pvMapping)
+        return KLDR_ERR_NOT_MAPPED;
+
+    /* the file provider does it all */
+    return kRdrRefresh(pMod->pRdr, (void *)pModPE->pvMapping, pMod->cSegments, pMod->aSegments);
+}
+
+
+/** @copydoc kLdrModFixupMapping */
+static int kldrModPEFixupMapping(PKLDRMOD pMod, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    PKLDRMODPE pModPE = (PKLDRMODPE)pMod->pvData;
+    int rc, rc2;
+
+    /*
+     * Mapped?
+     */
+    if (!pModPE->pvMapping)
+        return KLDR_ERR_NOT_MAPPED;
+
+    /*
+     * Before doing anything we'll have to make all pages writable.
+     */
+    rc = kRdrProtect(pMod->pRdr, (void *)pModPE->pvMapping, pMod->cSegments, pMod->aSegments, 1 /* unprotect */);
+    if (rc)
+        return rc;
+
+    /*
+     * Apply base relocations.
+     */
+    rc = kldrModPEDoFixups(pModPE, (void *)pModPE->pvMapping, (KUPTR)pModPE->pvMapping,
+                           pModPE->Hdrs.OptionalHeader.ImageBase);
+
+    /*
+     * Resolve imports.
+     */
+    if (!rc)
+        rc = kldrModPEDoImports(pModPE, (void *)pModPE->pvMapping, pfnGetImport, pvUser);
+
+    /*
+     * Restore protection.
+     */
+    rc2 = kRdrProtect(pMod->pRdr, (void *)pModPE->pvMapping, pMod->cSegments, pMod->aSegments, 0 /* protect */);
+    if (!rc && rc2)
+        rc = rc2;
+    return rc;
+}
+
+
+/**
+ * Applies base relocations to a (unprotected) image mapping.
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pModPE          The PE module interpreter instance.
+ * @param   pvMapping       The mapping to fixup.
+ * @param   NewBaseAddress  The address to fixup the mapping to.
+ * @param   OldBaseAddress  The address the mapping is currently fixed up to.
+ */
+static int  kldrModPEDoFixups(PKLDRMODPE pModPE, void *pvMapping, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress)
+{
+    const KLDRADDR                  Delta = NewBaseAddress - OldBaseAddress;
+    KU32                            cbLeft = pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].Size;
+    const IMAGE_BASE_RELOCATION    *pBR, *pFirstBR;
+
+    /*
+     * Don't don anything if the delta is 0 or there aren't any relocations.
+     */
+    if (    !Delta
+        ||  !cbLeft
+        ||  !pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].VirtualAddress)
+        return 0;
+
+    /*
+     * Process the fixups block by block.
+     * (These blocks appears to be 4KB on all archs despite the native page size.)
+     */
+    pBR = pFirstBR = KLDRMODPE_RVA2TYPE(pvMapping,
+                                        pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].VirtualAddress,
+                                        const IMAGE_BASE_RELOCATION *);
+    while (     cbLeft > sizeof(IMAGE_BASE_RELOCATION)
+           &&   pBR->SizeOfBlock >= sizeof(IMAGE_BASE_RELOCATION) /* paranoia */)
+    {
+        union
+        {
+            KU8        *pu8;
+            KU16       *pu16;
+            KU32       *pu32;
+            KU64       *pu64;
+        }               uChunk,
+                        u;
+        const KU16 *poffFixup = (const KU16 *)(pBR + 1);
+        const KU32  cbBlock = K_MIN(cbLeft, pBR->SizeOfBlock) - sizeof(IMAGE_BASE_RELOCATION); /* more caution... */
+        KU32        cFixups = cbBlock / sizeof(poffFixup[0]);
+        uChunk.pu8 = KLDRMODPE_RVA2TYPE(pvMapping, pBR->VirtualAddress, KU8 *);
+
+        /*
+         * Loop thru the fixups in this chunk.
+         */
+        while (cFixups > 0)
+        {
+            u.pu8 = uChunk.pu8 + (*poffFixup & 0xfff);
+            switch (*poffFixup >> 12) /* ordered by value. */
+            {
+                /* 0 - Alignment placeholder. */
+                case IMAGE_REL_BASED_ABSOLUTE:
+                    break;
+
+                /* 1 - 16-bit, add 2nd 16-bit part of the delta. (rare) */
+                case IMAGE_REL_BASED_HIGH:
+                    *u.pu16 += (KU16)(Delta >> 16);
+                    break;
+
+                /* 2 - 16-bit, add 1st 16-bit part of the delta. (rare) */
+                case IMAGE_REL_BASED_LOW:
+                    *u.pu16 += (KU16)Delta;
+                    break;
+
+                /* 3 - 32-bit, add delta. (frequent in 32-bit images) */
+                case IMAGE_REL_BASED_HIGHLOW:
+                    *u.pu32 += (KU32)Delta;
+                    break;
+
+                /* 4 - 16-bit, add 2nd 16-bit of the delta, sign adjust for the lower 16-bit. one arg. (rare)  */
+                case IMAGE_REL_BASED_HIGHADJ:
+                {
+                    KI32 i32;
+                    if (cFixups <= 1)
+                        return KLDR_ERR_PE_BAD_FIXUP;
+
+                    i32 = (KU32)*u.pu16 << 16;
+                    i32 |= *++poffFixup; cFixups--; /* the addend argument */
+                    i32 += (KU32)Delta;
+                    i32 += 0x8000;
+                    *u.pu16 = (KU16)(i32 >> 16);
+                    break;
+                }
+
+                /* 5 - 32-bit MIPS JMPADDR, no implemented. */
+                case IMAGE_REL_BASED_MIPS_JMPADDR:
+                    *u.pu32 = (*u.pu32 & 0xc0000000)
+                            | ((KU32)((*u.pu32 << 2) + (KU32)Delta) >> 2);
+                    break;
+
+                /* 6 - Intra section? Reserved value in later specs. Not implemented. */
+                case IMAGE_REL_BASED_SECTION:
+                    KLDRMODPE_ASSERT(!"SECTION");
+                    return KLDR_ERR_PE_BAD_FIXUP;
+
+                /* 7 - Relative intra section? Reserved value in later specs. Not implemented. */
+                case IMAGE_REL_BASED_REL32:
+                    KLDRMODPE_ASSERT(!"SECTION");
+                    return KLDR_ERR_PE_BAD_FIXUP;
+
+                /* 8 - reserved according to binutils... */
+                case 8:
+                    KLDRMODPE_ASSERT(!"RESERVERED8");
+                    return KLDR_ERR_PE_BAD_FIXUP;
+
+                /* 9 - IA64_IMM64 (/ MIPS_JMPADDR16), no specs nor need to support the platform yet.
+                 * Bet this requires more code than all the other fixups put together in good IA64 spirit :-) */
+                case IMAGE_REL_BASED_IA64_IMM64:
+                    KLDRMODPE_ASSERT(!"IA64_IMM64 / MIPS_JMPADDR16");
+                    return KLDR_ERR_PE_BAD_FIXUP;
+
+                /* 10 - 64-bit, add delta. (frequently in 64-bit images) */
+                case IMAGE_REL_BASED_DIR64:
+                    *u.pu64 += (KU64)Delta;
+                    break;
+
+                /* 11 - 16-bit, add 3rd 16-bit of the delta, sign adjust for the lower 32-bit. two args. (rare) */
+                case IMAGE_REL_BASED_HIGH3ADJ:
+                {
+                    KI64 i64;
+                    if (cFixups <= 2)
+                        return KLDR_ERR_PE_BAD_FIXUP;
+
+                    i64 = (KU64)*u.pu16 << 32
+                        | ((KU32)poffFixup[2] << 16)
+                        | poffFixup[1];
+                    i64 += Delta;
+                    i64 += 0x80008000UL;
+                    *u.pu16 = (KU16)(i64 >> 32);
+                    /* skip the addends arguments */
+                    poffFixup += 2;
+                    cFixups -= 2;
+                    break;
+                }
+
+                /* the rest are yet to be defined.*/
+                default:
+                    return KLDR_ERR_PE_BAD_FIXUP;
+            }
+
+            /*
+             * Next relocation.
+             */
+            poffFixup++;
+            cFixups--;
+        }
+
+
+        /*
+         * Next block.
+         */
+        cbLeft -= pBR->SizeOfBlock;
+        pBR = (PIMAGE_BASE_RELOCATION)((KUPTR)pBR + pBR->SizeOfBlock);
+    }
+
+    return 0;
+}
+
+
+
+/**
+ * Resolves imports.
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pModPE          The PE module interpreter instance.
+ * @param   pvMapping       The mapping which imports should be resolved.
+ * @param   pfnGetImport    The callback for resolving an imported symbol.
+ * @param   pvUser          User argument to the callback.
+ */
+static int  kldrModPEDoImports(PKLDRMODPE pModPE, void *pvMapping, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    const IMAGE_IMPORT_DESCRIPTOR *pImpDesc;
+
+    /*
+     * If no imports, there is nothing to do.
+     */
+    kldrModPENumberOfImports(pModPE->pMod, pvMapping);
+    if (!pModPE->cImportModules)
+        return 0;
+
+    pImpDesc = KLDRMODPE_RVA2TYPE(pvMapping,
+                                  pModPE->Hdrs.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress,
+                                  const IMAGE_IMPORT_DESCRIPTOR *);
+    if (pModPE->Hdrs.FileHeader.SizeOfOptionalHeader == sizeof(IMAGE_OPTIONAL_HEADER32))
+        return kldrModPEDoImports32Bit(pModPE, pvMapping, pImpDesc, pfnGetImport, pvUser);
+    return kldrModPEDoImports64Bit(pModPE, pvMapping, pImpDesc, pfnGetImport, pvUser);
+}
+
+
+/**
+ * Resolves imports, 32-bit image.
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pModPE          The PE module interpreter instance.
+ * @param   pvMapping       The mapping which imports should be resolved.
+ * @param   pImpDesc        Pointer to the first import descriptor.
+ * @param   pfnGetImport    The callback for resolving an imported symbol.
+ * @param   pvUser          User argument to the callback.
+ */
+static int  kldrModPEDoImports32Bit(PKLDRMODPE pModPE, void *pvMapping, const IMAGE_IMPORT_DESCRIPTOR *pImpDesc,
+                                    PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    PKLDRMOD pMod = pModPE->pMod;
+    KU32 iImp;
+
+    /*
+     * Iterate the import descriptors.
+     */
+    for (iImp = 0; iImp < pModPE->cImportModules; iImp++, pImpDesc++)
+    {
+        PIMAGE_THUNK_DATA32         pFirstThunk = KLDRMODPE_RVA2TYPE(pvMapping, pImpDesc->FirstThunk, PIMAGE_THUNK_DATA32);
+        const IMAGE_THUNK_DATA32   *pThunk = pImpDesc->u.OriginalFirstThunk
+            ? KLDRMODPE_RVA2TYPE(pvMapping, pImpDesc->u.OriginalFirstThunk, const IMAGE_THUNK_DATA32 *)
+            : KLDRMODPE_RVA2TYPE(pvMapping, pImpDesc->FirstThunk, const IMAGE_THUNK_DATA32 *);
+
+        /* Iterate the thunks. */
+        while (pThunk->u1.Ordinal != 0)
+        {
+            KLDRADDR    Value;
+            KU32        fKind = KLDRSYMKIND_REQ_FLAT;
+            int         rc;
+
+            /* Ordinal or name import? */
+            if (IMAGE_SNAP_BY_ORDINAL32(pThunk->u1.Ordinal))
+                rc = pfnGetImport(pMod, iImp, IMAGE_ORDINAL32(pThunk->u1.Ordinal), NULL, 0, NULL, &Value, &fKind, pvUser);
+            else if (KLDRMODPE_VALID_RVA(pModPE, pThunk->u1.Ordinal))
+            {
+                const IMAGE_IMPORT_BY_NAME *pName = KLDRMODPE_RVA2TYPE(pvMapping, pThunk->u1.Ordinal, const IMAGE_IMPORT_BY_NAME *);
+                rc = pfnGetImport(pMod, iImp, NIL_KLDRMOD_SYM_ORDINAL, (const char *)pName->Name,
+                                  kHlpStrLen((const char *)pName->Name), NULL, &Value, &fKind, pvUser);
+            }
+            else
+            {
+                KLDRMODPE_ASSERT(!"bad 32-bit import");
+                return KLDR_ERR_PE_BAD_IMPORT;
+            }
+            if (rc)
+                return rc;
+
+            /* Apply it. */
+            pFirstThunk->u1.Function = (KU32)Value;
+            if (pFirstThunk->u1.Function != Value)
+            {
+                KLDRMODPE_ASSERT(!"overflow");
+                return KLDR_ERR_ADDRESS_OVERFLOW;
+            }
+
+            /* next */
+            pThunk++;
+            pFirstThunk++;
+        }
+    }
+
+    return 0;
+}
+
+
+/**
+ * Resolves imports, 64-bit image.
+ *
+ * @returns 0 on success, non-zero kLdr status code on failure.
+ * @param   pModPE          The PE module interpreter instance.
+ * @param   pvMapping       The mapping which imports should be resolved.
+ * @param   pImpDesc        Pointer to the first import descriptor.
+ * @param   pfnGetImport    The callback for resolving an imported symbol.
+ * @param   pvUser          User argument to the callback.
+ */
+static int  kldrModPEDoImports64Bit(PKLDRMODPE pModPE, void *pvMapping, const IMAGE_IMPORT_DESCRIPTOR *pImpDesc,
+                                    PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    PKLDRMOD pMod = pModPE->pMod;
+    KU32 iImp;
+
+    /*
+     * Iterate the import descriptors.
+     */
+    for (iImp = 0; iImp < pModPE->cImportModules; iImp++, pImpDesc++)
+    {
+        PIMAGE_THUNK_DATA64         pFirstThunk = KLDRMODPE_RVA2TYPE(pvMapping, pImpDesc->FirstThunk, PIMAGE_THUNK_DATA64);
+        const IMAGE_THUNK_DATA64   *pThunk = pImpDesc->u.OriginalFirstThunk
+            ? KLDRMODPE_RVA2TYPE(pvMapping, pImpDesc->u.OriginalFirstThunk, const IMAGE_THUNK_DATA64 *)
+            : KLDRMODPE_RVA2TYPE(pvMapping, pImpDesc->FirstThunk, const IMAGE_THUNK_DATA64 *);
+
+        /* Iterate the thunks. */
+        while (pThunk->u1.Ordinal != 0)
+        {
+            KLDRADDR    Value;
+            KU32        fKind = KLDRSYMKIND_REQ_FLAT;
+            int         rc;
+
+            /* Ordinal or name import? */
+            if (IMAGE_SNAP_BY_ORDINAL64(pThunk->u1.Ordinal))
+                rc = pfnGetImport(pMod, iImp, (KU32)IMAGE_ORDINAL64(pThunk->u1.Ordinal), NULL, 0, NULL, &Value, &fKind, pvUser);
+            else if (KLDRMODPE_VALID_RVA(pModPE, pThunk->u1.Ordinal))
+            {
+                const IMAGE_IMPORT_BY_NAME *pName = KLDRMODPE_RVA2TYPE(pvMapping, pThunk->u1.Ordinal, const IMAGE_IMPORT_BY_NAME *);
+                rc = pfnGetImport(pMod, iImp, NIL_KLDRMOD_SYM_ORDINAL, (const char *)pName->Name,
+                                  kHlpStrLen((const char *)pName->Name), NULL, &Value, &fKind, pvUser);
+            }
+            else
+            {
+                KLDRMODPE_ASSERT(!"bad 64-bit import");
+                return KLDR_ERR_PE_BAD_IMPORT;
+            }
+            if (rc)
+                return rc;
+
+            /* Apply it. */
+            pFirstThunk->u1.Function = Value;
+
+            /* next */
+            pThunk++;
+            pFirstThunk++;
+        }
+    }
+
+    return 0;
+}
+
+
+
+/** @copydoc kLdrModCallInit */
+static int kldrModPECallInit(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle)
+{
+    PKLDRMODPE pModPE = (PKLDRMODPE)pMod->pvData;
+    int rc;
+
+    /*
+     * Mapped?
+     */
+    if (pvMapping == KLDRMOD_INT_MAP)
+    {
+        pvMapping = (void *)pModPE->pvMapping;
+        if (!pvMapping)
+            return KLDR_ERR_NOT_MAPPED;
+    }
+
+    /*
+     * Do TLS callbacks first and then call the init/term function if it's a DLL.
+     */
+    rc = kldrModPEDoCallTLS(pModPE, pvMapping, DLL_PROCESS_ATTACH, uHandle);
+    if (    !rc
+        &&  (pModPE->Hdrs.FileHeader.Characteristics & IMAGE_FILE_DLL))
+    {
+        rc = kldrModPEDoCallDLL(pModPE, pvMapping, DLL_PROCESS_ATTACH, uHandle);
+        if (rc)
+            kldrModPEDoCallTLS(pModPE, pvMapping, DLL_PROCESS_DETACH, uHandle);
+    }
+
+    return rc;
+}
+
+
+/**
+ * Call the DLL entrypoint.
+ *
+ * @returns 0 on success.
+ * @returns KLDR_ERR_MODULE_INIT_FAILED  or KLDR_ERR_THREAD_ATTACH_FAILED on failure.
+ * @param   pModPE          The PE module interpreter instance.
+ * @param   pvMapping       The module mapping to use (resolved).
+ * @param   uOp             The operation (DLL_*).
+ * @param   uHandle         The module handle to present.
+ */
+static int  kldrModPEDoCallDLL(PKLDRMODPE pModPE, void *pvMapping, unsigned uOp, KUPTR uHandle)
+{
+    int rc;
+
+    /*
+     * If no entrypoint there isn't anything to be done.
+     */
+    if (!pModPE->Hdrs.OptionalHeader.AddressOfEntryPoint)
+        return 0;
+
+    /*
+     * Invoke the entrypoint and convert the boolean result to a kLdr status code.
+     */
+    rc = kldrModPEDoCall((KUPTR)pvMapping + pModPE->Hdrs.OptionalHeader.AddressOfEntryPoint, uHandle, uOp, NULL);
+    if (rc)
+        rc = 0;
+    else if (uOp == DLL_PROCESS_ATTACH)
+        rc = KLDR_ERR_MODULE_INIT_FAILED;
+    else if (uOp == DLL_THREAD_ATTACH)
+        rc = KLDR_ERR_THREAD_ATTACH_FAILED;
+    else /* detach: ignore failures */
+        rc = 0;
+    return rc;
+}
+
+
+/**
+ * Call the TLS entrypoints.
+ *
+ * @returns 0 on success.
+ * @returns KLDR_ERR_THREAD_ATTACH_FAILED on failure.
+ * @param   pModPE          The PE module interpreter instance.
+ * @param   pvMapping       The module mapping to use (resolved).
+ * @param   uOp             The operation (DLL_*).
+ * @param   uHandle         The module handle to present.
+ */
+static int  kldrModPEDoCallTLS(PKLDRMODPE pModPE, void *pvMapping, unsigned uOp, KUPTR uHandle)
+{
+    /** @todo implement TLS support. */
+    K_NOREF(pModPE);
+    K_NOREF(pvMapping);
+    K_NOREF(uOp);
+    K_NOREF(uHandle);
+    return 0;
+}
+
+
+/**
+ * Do a 3 parameter callback.
+ *
+ * @returns 32-bit callback return.
+ * @param   uEntrypoint     The address of the function to be called.
+ * @param   uHandle         The first argument, the module handle.
+ * @param   uOp             The second argumnet, the reason we're calling.
+ * @param   pvReserved      The third argument, reserved argument. (figure this one out)
+ */
+KI32 kldrModPEDoCall(KUPTR uEntrypoint, KUPTR uHandle, KU32 uOp, void *pvReserved)
+{
+    KI32 rc;
+
+/** @todo try/except */
+#if defined(__X86__) || defined(__i386__) || defined(_M_IX86)
+    /*
+     * Be very careful.
+     * Not everyone will have got the calling convention right.
+     */
+# ifdef __GNUC__
+    __asm__ __volatile__(
+        "pushl  %2\n\t"
+        "pushl  %1\n\t"
+        "pushl  %0\n\t"
+        "lea   12(%%esp), %2\n\t"
+        "call  *%3\n\t"
+        "movl   %2, %%esp\n\t"
+        : "=a" (rc)
+        : "d" (uOp),
+          "S" (0),
+          "c" (uEntrypoint),
+          "0" (uHandle));
+# elif defined(_MSC_VER)
+    __asm {
+        mov     eax, [uHandle]
+        mov     edx, [uOp]
+        mov     ecx, 0
+        mov     ebx, [uEntrypoint]
+        push    edi
+        mov     edi, esp
+        push    ecx
+        push    edx
+        push    eax
+        call    ebx
+        mov     esp, edi
+        pop     edi
+        mov     [rc], eax
+    }
+# else
+#  error "port me!"
+# endif
+
+#elif defined(__AMD64__) || defined(__x86_64__) || defined(_M_IX86)
+    /*
+     * For now, let's just get the work done...
+     */
+    /** @todo Deal with GCC / MSC differences in some sensible way. */
+    int (*pfn)(KUPTR uHandle, KU32 uOp, void *pvReserved);
+    pfn = (int (*)(KUPTR uHandle, KU32 uOp, void *pvReserved))uEntrypoint;
+    rc = pfn(uHandle, uOp, NULL);
+
+#else
+# error "port me"
+#endif
+    K_NOREF(pvReserved);
+
+    return rc;
+}
+
+
+/** @copydoc kLdrModCallTerm */
+static int kldrModPECallTerm(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle)
+{
+    PKLDRMODPE  pModPE = (PKLDRMODPE)pMod->pvData;
+
+    /*
+     * Mapped?
+     */
+    if (pvMapping == KLDRMOD_INT_MAP)
+    {
+        pvMapping = (void *)pModPE->pvMapping;
+        if (!pvMapping)
+            return KLDR_ERR_NOT_MAPPED;
+    }
+
+    /*
+     * Do TLS callbacks first.
+     */
+    kldrModPEDoCallTLS(pModPE, pvMapping, DLL_PROCESS_DETACH, uHandle);
+    if (pModPE->Hdrs.FileHeader.Characteristics & IMAGE_FILE_DLL)
+        kldrModPEDoCallDLL(pModPE, pvMapping, DLL_PROCESS_DETACH, uHandle);
+
+    return 0;
+}
+
+
+/** @copydoc kLdrModCallThread */
+static int kldrModPECallThread(PKLDRMOD pMod, void *pvMapping, KUPTR uHandle, unsigned fAttachingOrDetaching)
+{
+    PKLDRMODPE  pModPE = (PKLDRMODPE)pMod->pvData;
+    unsigned    uOp = fAttachingOrDetaching ? DLL_THREAD_ATTACH : DLL_THREAD_DETACH;
+    int         rc;
+
+    /*
+     * Mapped?
+     */
+    if (pvMapping == KLDRMOD_INT_MAP)
+    {
+        pvMapping = (void *)pModPE->pvMapping;
+        if (!pvMapping)
+            return KLDR_ERR_NOT_MAPPED;
+    }
+
+    /*
+     * Do TLS callbacks first and then call the init/term function if it's a DLL.
+     */
+    rc = kldrModPEDoCallTLS(pModPE, pvMapping, uOp, uHandle);
+    if (!fAttachingOrDetaching)
+        rc = 0;
+    if (    !rc
+        &&  (pModPE->Hdrs.FileHeader.Characteristics & IMAGE_FILE_DLL))
+    {
+        rc = kldrModPEDoCallDLL(pModPE, pvMapping, uOp, uHandle);
+        if (!fAttachingOrDetaching)
+            rc = 0;
+        if (rc)
+            kldrModPEDoCallTLS(pModPE, pvMapping, uOp, uHandle);
+    }
+
+    return rc;
+}
+
+
+/** @copydoc kLdrModSize */
+static KLDRADDR kldrModPESize(PKLDRMOD pMod)
+{
+    PKLDRMODPE pModPE = (PKLDRMODPE)pMod->pvData;
+    return pModPE->Hdrs.OptionalHeader.SizeOfImage;
+}
+
+
+/** @copydoc kLdrModGetBits */
+static int kldrModPEGetBits(PKLDRMOD pMod, void *pvBits, KLDRADDR BaseAddress, PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    PKLDRMODPE  pModPE = (PKLDRMODPE)pMod->pvData;
+    KU32        i;
+    int         rc;
+
+    /*
+     * Zero the entire buffer first to simplify things.
+     */
+    kHlpMemSet(pvBits, 0, pModPE->Hdrs.OptionalHeader.SizeOfImage);
+
+    /*
+     * Iterate the segments and read the data within them.
+     */
+    for (i = 0; i < pMod->cSegments; i++)
+    {
+        /* skip it? */
+        if (    pMod->aSegments[i].cbFile == -1
+            ||  pMod->aSegments[i].offFile == -1
+            ||  pMod->aSegments[i].LinkAddress == NIL_KLDRADDR
+            ||  !pMod->aSegments[i].Alignment)
+            continue;
+        rc = kRdrRead(pMod->pRdr,
+                         (KU8 *)pvBits + (pMod->aSegments[i].LinkAddress - pModPE->Hdrs.OptionalHeader.ImageBase),
+                         pMod->aSegments[i].cbFile,
+                         pMod->aSegments[i].offFile);
+        if (rc)
+            return rc;
+    }
+
+    /*
+     * Perform relocations.
+     */
+    return kldrModPERelocateBits(pMod, pvBits, BaseAddress, pModPE->Hdrs.OptionalHeader.ImageBase, pfnGetImport, pvUser);
+
+}
+
+
+/** @copydoc kLdrModRelocateBits */
+static int kldrModPERelocateBits(PKLDRMOD pMod, void *pvBits, KLDRADDR NewBaseAddress, KLDRADDR OldBaseAddress,
+                                 PFNKLDRMODGETIMPORT pfnGetImport, void *pvUser)
+{
+    PKLDRMODPE pModPE = (PKLDRMODPE)pMod->pvData;
+    int rc;
+
+    /*
+     * Call workers to do the jobs.
+     */
+    rc = kldrModPEDoFixups(pModPE, pvBits, NewBaseAddress, OldBaseAddress);
+    if (!rc)
+        rc = kldrModPEDoImports(pModPE, pvBits, pfnGetImport, pvUser);
+
+    return rc;
+}
+
+
+/**
+ * The PE module interpreter method table.
+ */
+KLDRMODOPS g_kLdrModPEOps =
+{
+    "PE",
+    NULL,
+    kldrModPECreate,
+    kldrModPEDestroy,
+    kldrModPEQuerySymbol,
+    kldrModPEEnumSymbols,
+    kldrModPEGetImport,
+    kldrModPENumberOfImports,
+    NULL /* can execute one is optional */,
+    kldrModPEGetStackInfo,
+    kldrModPEQueryMainEntrypoint,
+    NULL /* pfnQueryImageUuid */,
+    NULL, /** @todo resources */
+    NULL, /** @todo resources */
+    kldrModPEEnumDbgInfo,
+    kldrModPEHasDbgInfo,
+    kldrModPEMap,
+    kldrModPEUnmap,
+    kldrModPEAllocTLS,
+    kldrModPEFreeTLS,
+    kldrModPEReload,
+    kldrModPEFixupMapping,
+    kldrModPECallInit,
+    kldrModPECallTerm,
+    kldrModPECallThread,
+    kldrModPESize,
+    kldrModPEGetBits,
+    kldrModPERelocateBits,
+    NULL, /** @todo mostly done */
+    42 /* the end */
+};
diff --git a/src/lib/kStuff/kLdr/testcase/Makefile.kmk b/src/lib/kStuff/kLdr/testcase/Makefile.kmk
new file mode 100644
index 0000000..7b3efb6
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/Makefile.kmk
@@ -0,0 +1,305 @@
+# $Id: Makefile.kmk 29 2009-07-01 20:30:29Z bird $

+## @file

+# kBuild Makefile for the kLdr testcases.

+#

+

+#

+# Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>

+#

+# Permission is hereby granted, free of charge, to any person

+# obtaining a copy of this software and associated documentation

+# files (the "Software"), to deal in the Software without

+# restriction, including without limitation the rights to use,

+# copy, modify, merge, publish, distribute, sublicense, and/or sell

+# copies of the Software, and to permit persons to whom the

+# Software is furnished to do so, subject to the following

+# conditions:

+#

+# The above copyright notice and this permission notice shall be

+# included in all copies or substantial portions of the Software.

+#

+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

+# OTHER DEALINGS IN THE SOFTWARE.

+#

+

+# generate rules.

+DEPTH ?= ../..

+SUB_DEPTH = ../..

+include $(PATH_KBUILD)/subheader.kmk

+

+

+#

+# Templates for the testcases.

+#

+TEMPLATE_TST = Testcase template

+ifeq ($(BUILD_TARGET),win)

+ ifeq ($(BUILD_TARGET_ARCH),x86)

+  TEMPLATE_TST_TOOL = VCC70

+  TEMPLATE_TST_CFLAGS = -W3 -Zi -Zl -MD

+  TEMPLATE_TST_CXXFLAGS = -W3 -Zi -Zl -MD

+  TEMPLATE_TST_LIBS = \

+   	$(PATH_TOOL_VCC70_LIB)/oldnames.lib \

+   	$(PATH_TOOL_VCC70_LIB)/msvcrt.lib

+ else

+  TEMPLATE_TST_TOOL = VCC80AMD64

+  TEMPLATE_TST_CFLAGS = -W3 -Zi -Zl -MD

+  TEMPLATE_TST_CXXFLAGS = -W3 -Zi -Zl -MD

+  TEMPLATE_TST_LIBS = \

+   	$(PATH_TOOL_VCC80AMD64_LIB)/oldnames.lib \

+   	$(PATH_TOOL_VCC80AMD64_LIB)/msvcrt.lib

+ endif

+ TEMPLATE_TST_CFLAGS.release = -O2

+ TEMPLATE_TST_CXXFLAGS.release = -O2

+ TEMPLATE_TST_ASFLAGS = -f win

+ TEMPLATE_TST_DEFS = __WIN__

+ TEMPLATE_TST_SDKS.x86 = WIN32SDK

+ TEMPLATE_TST_SDKS.amd64 = WIN64SDK

+

+else

+ TEMPLATE_TST_CFLAGS = -Wall -pedantic -g

+ TEMPLATE_TST_CFLAGS.release = -O2

+ TEMPLATE_TST_LDFLAGS =

+ ifneq ($(filter os2,$(BUILD_TARGET)),)

+  TEMPLATE_TST_TOOL = GCC3OMF

+  TEMPLATE_TST_ASFLAGS = -f obj

+  TEMPLATE_TST_LIBS = os2 gcc end

+ else ifneq ($(filter darwin,$(BUILD_TARGET)),)

+  TEMPLATE_TST_TOOL = GCC4MACHO

+  TEMPLATE_TST_ASFLAGS = -f macho

+  TEMPLATE_TST_DEFS = __DARWIN__

+  TEMPLATE_TST_LIBS =

+ else

+  TEMPLATE_TST_TOOL = GCC3

+  TEMPLATE_TST_ASFLAGS = -f elf

+  TEMPLATE_TST_LIBS = gcc

+ endif

+endif

+TEMPLATE_TST_INCS := $(PATH_SUB_CURRENT) $(PATH_SUB_ROOT)/include

+

+

+TEMPLATE_TSTPROG = Testcase program template

+TEMPLATE_TSTPROG_EXTENDS = TST

+

+

+TEMPLATE_TSTDLL = Testcase dll template

+TEMPLATE_TSTDLL_EXTENDS = TST

+

+

+TEMPLATE_TSTBARE = Bare bone testcase template

+ifeq ($(BUILD_TARGET),win)

+ ifeq ($(BUILD_TARGET_ARCH),x86)

+  TEMPLATE_TSTBARE_TOOL = VCC70

+ else

+  TEMPLATE_TSTBARE_TOOL = VCC80AMD64

+ endif

+ TEMPLATE_TSTBARE_CFLAGS = -W3 -Zi -Zl

+ TEMPLATE_TSTBARE_CFLAGS.release = -O2

+ TEMPLATE_TSTBARE_CXXFLAGS = -W3 -Zi -Zl

+ TEMPLATE_TSTBARE_CXXFLAGS.release = -O2

+ TEMPLATE_TSTBARE_ASFLAGS = -f win

+ TEMPLATE_TSTBARE_DEFS = __WIN__

+ TEMPLATE_TSTBARE_SDKS.x86 = WIN32SDK

+ TEMPLATE_TSTBARE_SDKS.amd64 = WIN64SDK

+

+else

+ TEMPLATE_TSTBARE_CFLAGS = -Wall -pedantic -g

+ TEMPLATE_TSTBARE_CFLAGS.release = -O2

+ TEMPLATE_TSTBARE_LDFLAGS = -nostdlib -lgcc

+ ifeq ($(filter-out os2,$(BUILD_TARGET)),)

+  TEMPLATE_TSTBARE_TOOL = GCC3OMF

+  TEMPLATE_TSTBARE_ASFLAGS = -f obj

+  TEMPLATE_TSTBARE_ASTOOL = NASM

+  TEMPLATE_TSTBARE_DEFS = main=main_wrapped

+  TEMPLATE_TSTBARE_LIBS = os2

+ else ifeq ($(filter-out darwin,$(BUILD_TARGET)),)

+  TEMPLATE_TSTBARE_TOOL = GCC4MACHO

+  TEMPLATE_TSTBARE_ASFLAGS = -f macho

+  TEMPLATE_TSTBARE_ASTOOL = NASM

+  TEMPLATE_TSTBARE_DEFS = __DARWIN__

+  TEMPLATE_TSTBARE_LIBS =

+  TEMPLATE_TSTBARE_CFLAGS += -static -fno-common

+  TEMPLATE_TSTBARE_LDFLAGS += -nostdlib -r

+ else

+  TEMPLATE_TSTBARE_TOOL = GCC3

+  TEMPLATE_TSTBARE_ASFLAGS = -f elf

+  TEMPLATE_TSTBARE_LIBS = gcc

+ endif

+endif

+TEMPLATE_TSTBARE_INCS := $(PATH_SUB_CURRENT) $(PATH_SUB_ROOT)/include

+

+TEMPLATE_TSTBAREPROG = Bare bone testcase program template

+TEMPLATE_TSTBAREPROG_EXTENDS = TSTBARE

+ifneq ($(filter win win32 win64,$(BUILD_TARGET)),)

+TEMPLATE_TSTBAREPROG_LDFLAGS += -Entry:WindowsMain -FIXED:NO

+else

+TEMPLATE_TSTBAREPROG_LDFLAGS.nt += -FIXED:NO

+endif

+

+

+TEMPLATE_TSTBAREDLL = Bare bone testcase dll template

+TEMPLATE_TSTBAREDLL_EXTENDS = TSTBARE

+ifeq ($(BUILD_TARGET),win)

+ TEMPLATE_TSTBAREDLL_LDFLAGS += -Entry:DllMain

+else ifeq ($(BUILD_TARGET),darwin)

+# TEMPLATE_TSTBAREDLL_CFLAGS += -dynamiclib

+# TEMPLATE_TSTBAREDLL_LDFLAGS += -dynamiclib

+endif

+

+

+

+

+#

+# tst-0: four dlls, three of which depends on the 4th and no external dependencies.

+#        The purpose of this testcase is to debug the dynamic loader without

+#        messing with the native loader at all.

+#

+PROGRAMS += tst-0 tst-0-driver

+DLLS += tst-0-a tst-0-b tst-0-c tst-0-d

+

+tst-0-driver_TEMPLATE = TSTPROG

+tst-0-driver_SOURCES  = tst-0-driver.c

+

+tst-0-a_TEMPLATE = TSTBAREDLL

+tst-0-a_SOURCES  = tst-0-a.c tstDllMainStub.c

+tst-0-a_SOURCES.os2= tstDllMainStub-os2.asm

+

+tst-0-b_TEMPLATE = TSTBAREDLL

+tst-0-b_SOURCES  = tst-0-b.c tstDllMainStub.c

+tst-0-b_SOURCES.os2= tstDllMainStub-os2.asm

+

+tst-0-c_TEMPLATE = TSTBAREDLL

+tst-0-c_SOURCES  = tst-0-c.c tstDllMainStub.c

+tst-0-c_SOURCES.os2= tstDllMainStub-os2.asm

+

+tst-0-d_TEMPLATE = TSTBAREDLL

+tst-0-d_SOURCES  = tst-0-d.c tstDllMainStub.c

+tst-0-d_SOURCES.os2= tstDllMainStub-os2.asm

+

+tst-0_TEMPLATE   = TSTBAREPROG

+tst-0_SOURCES    = tst-0.c tstExeMainStub.c

+tst-0_SOURCES.os2= tstExeMainStub-os2.asm

+

+ifeq ($(BUILD_TARGET),win)

+tst-0-driver_LIBS= $(PATH_LIB)/kLdr.lib

+tst-0-a_LIBS     = $(PATH_TARGET)/tst-0-d/tst-0-d.lib

+tst-0-b_LIBS     = $(PATH_TARGET)/tst-0-d/tst-0-d.lib

+tst-0-c_LIBS     = $(PATH_TARGET)/tst-0-d/tst-0-d.lib

+tst-0_LIBS       = $(TARGET_tst-0-a:.dll=.lib) $(TARGET_tst-0-b:.dll=.lib) $(TARGET_tst-0-c:.dll=.lib)

+else

+tst-0-driver_LIBS= $(PATH_DLL)/kLdr$(SUFF_DLL)

+tst-0-a_LIBS     = $(subst -a,-d,$(TARGET_tst-0-a))

+tst-0-b_LIBS     = $(subst -b,-d,$(TARGET_tst-0-b))

+tst-0-c_LIBS     = $(subst -c,-d,$(TARGET_tst-0-c))

+tst-0_LIBS       = $(TARGET_tst-0-a) $(TARGET_tst-0-b) $(TARGET_tst-0-c)

+endif

+

+

+#

+# tst-1: four dlls, three of which depends on the 4th and the testcase depends on those three again.

+#

+PROGRAMS += tst-1

+DLLS += tst-1-a tst-1-b tst-1-c tst-1-d

+

+tst-1-a_TEMPLATE = TSTDLL

+tst-1-a_SOURCES  = tst-1-a.c tstDllMain.c

+

+tst-1-b_TEMPLATE = TSTDLL

+tst-1-b_SOURCES  = tst-1-b.c tstDllMain.c

+

+tst-1-c_TEMPLATE = TSTDLL

+tst-1-c_SOURCES  = tst-1-c.c tstDllMain.c

+

+tst-1-d_TEMPLATE = TSTDLL

+tst-1-d_SOURCES  = tst-1-d.c tstDllMain.c

+

+tst-1_TEMPLATE   = TSTPROG

+tst-1_SOURCES    = tst-1.c

+

+ifeq ($(BUILD_TARGET),win)

+tst-1-a_LIBS     = $(PATH_TARGET)/tst-1-d/tst-1-d.lib

+tst-1-b_LIBS     = $(PATH_TARGET)/tst-1-d/tst-1-d.lib

+tst-1-c_LIBS     = $(PATH_TARGET)/tst-1-d/tst-1-d.lib

+tst-1_LIBS       = $(TARGET_tst-1-a:.dll=.lib) $(TARGET_tst-1-b:.dll=.lib) $(TARGET_tst-1-c:.dll=.lib)

+else

+tst-1-a_LIBS     = $(subst -a,-d,$(TARGET_tst-1-a))

+tst-1-b_LIBS     = $(subst -b,-d,$(TARGET_tst-1-b))

+tst-1-c_LIBS     = $(subst -c,-d,$(TARGET_tst-1-c))

+tst-1_LIBS       = $(TARGET_tst-1-a) $(TARGET_tst-1-b) $(TARGET_tst-1-c)

+endif

+

+

+#

+# tst-2: four dlls, three of which depends on the 1st, and the testcase depends on those all of them.

+#

+PROGRAMS += tst-2

+DLLS += tst-2-a tst-2-b tst-2-c tst-2-d

+

+tst-2-a_TEMPLATE = TSTDLL

+tst-2-a_SOURCES  = tst-2-a.c tstDllMain.c

+

+tst-2-b_TEMPLATE = TSTDLL

+tst-2-b_SOURCES  = tst-2-b.c tstDllMain.c

+

+tst-2-c_TEMPLATE = TSTDLL

+tst-2-c_SOURCES  = tst-2-c.c tstDllMain.c

+

+tst-2-d_TEMPLATE = TSTDLL

+tst-2-d_SOURCES  = tst-2-d.c tstDllMain.c

+

+tst-2_TEMPLATE   = TSTPROG

+tst-2_SOURCES    = tst-2.c

+

+ifeq ($(BUILD_TARGET),win)

+tst-2-b_LIBS     = $(PATH_TARGET)/tst-2-a/tst-2-a.lib

+tst-2-c_LIBS     = $(PATH_TARGET)/tst-2-a/tst-2-a.lib

+tst-2-d_LIBS     = $(PATH_TARGET)/tst-2-a/tst-2-a.lib

+tst-2_LIBS       = $(TARGET_tst-2-b:.dll=.lib) $(TARGET_tst-2-c:.dll=.lib) $(TARGET_tst-2-d:.dll=.lib) $(TARGET_tst-2-a:.dll=.lib)

+else

+tst-2-b_LIBS     = $(subst -b,-a,$(TARGET_tst-2-b))

+tst-2-c_LIBS     = $(subst -c,-a,$(TARGET_tst-2-c))

+tst-2-d_LIBS     = $(subst -d,-a,$(TARGET_tst-2-d))

+tst-2_LIBS       = $(TARGET_tst-2-a) $(TARGET_tst-2-b) $(TARGET_tst-2-c) $(TARGET_tst-2-d)

+endif

+

+

+#

+# tst-3: Single module.

+#

+PROGRAMS += tst-3-driver

+ifeq ($(BUILD_TARGET),darwin)

+SYSMODS += tst-3

+else

+DLLS += tst-3

+LIBRARIES.win += tst-3-imp

+LIBRARIES.os2 += tst-3-imp

+endif

+

+tst-3_TEMPLATE = TSTBAREDLL

+tst-3_SOURCES  = tst-3.c tst-3-ext.c tstDllMainStub.c

+tst-3_SOURCES.os2= tstDllMainStub-os2.asm

+tst-3_LIBS.os2 = $(TARGET_tst-3-imp)

+tst-3_LIBS.win = $(TARGET_tst-3-imp)

+

+tst-3-imp_TEMPLATE = TSTBAREDLL

+tst-3-imp_SOURCES.win = tst-3-imp-win.def

+tst-3-imp_SOURCES.os2 = tst-3-imp-os2.def

+

+tst-3-driver_TEMPLATE = TSTPROG

+tst-3-driver_SOURCES  = tst-3-driver.c

+

+ifeq ($(BUILD_TARGET),win)

+tst-3-driver_LIBS = $(PATH_LIB)/kLdr.lib

+else

+tst-3-driver_LIBS = $(PATH_DLL)/kLdr$(SUFF_DLL)

+endif

+

+

+# generate rules.

+include $(PATH_KBUILD)/subfooter.kmk

+

diff --git a/src/lib/kStuff/kLdr/testcase/bin/tst-3.dll.win.x86 b/src/lib/kStuff/kLdr/testcase/bin/tst-3.dll.win.x86
new file mode 100644
index 0000000..2a48ccb
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/bin/tst-3.dll.win.x86
diff --git a/src/lib/kStuff/kLdr/testcase/bin/tst-3.rel.darwin.x86 b/src/lib/kStuff/kLdr/testcase/bin/tst-3.rel.darwin.x86
new file mode 100644
index 0000000..a18a919
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/bin/tst-3.rel.darwin.x86
diff --git a/src/lib/kStuff/kLdr/testcase/tst-0-a.c b/src/lib/kStuff/kLdr/testcase/tst-0-a.c
new file mode 100644
index 0000000..a5533f2
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-0-a.c
@@ -0,0 +1,10 @@
+#include "tst.h"

+const char *g_pszName = "a";

+

+MY_IMPORT(int) FuncD(void);

+

+MY_EXPORT(int) FuncA(void)

+{

+    return FuncD() | (g_pszName[0] == 'a' ? 0x42 : 0x0001);

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-0-b.c b/src/lib/kStuff/kLdr/testcase/tst-0-b.c
new file mode 100644
index 0000000..286b179
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-0-b.c
@@ -0,0 +1,10 @@
+#include "tst.h"

+const char *g_pszName = "b";

+

+MY_IMPORT(int) FuncD(void);

+

+MY_EXPORT(int) FuncB(void)

+{

+    return FuncD() | (g_pszName[0] == 'b' ? 0x4200 : 0x0010);

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-0-c.c b/src/lib/kStuff/kLdr/testcase/tst-0-c.c
new file mode 100644
index 0000000..3c9d449
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-0-c.c
@@ -0,0 +1,10 @@
+#include "tst.h"

+const char *g_pszName = "c";

+

+MY_IMPORT(int) FuncD(void);

+

+MY_EXPORT(int) FuncC(void)

+{

+    return FuncD() | (g_pszName[0] == 'c' ? 0x420000 : 0x0100);

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-0-d.c b/src/lib/kStuff/kLdr/testcase/tst-0-d.c
new file mode 100644
index 0000000..a5501b0
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-0-d.c
@@ -0,0 +1,8 @@
+#include "tst.h"

+const char *g_pszName = "d";

+

+MY_EXPORT(int) FuncD(void)

+{

+    return g_pszName[0] == 'd' ? 0x42000000 : 0x1000;

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-0-driver.c b/src/lib/kStuff/kLdr/testcase/tst-0-driver.c
new file mode 100644
index 0000000..be304d5
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-0-driver.c
@@ -0,0 +1,502 @@
+/* $Id: tst-0-driver.c 29 2009-07-01 20:30:29Z bird $ */

+/** @file

+ * kLdr - Dynamic Loader testcase no. 0, Driver.

+ */

+

+/*

+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>

+ *

+ * Permission is hereby granted, free of charge, to any person

+ * obtaining a copy of this software and associated documentation

+ * files (the "Software"), to deal in the Software without

+ * restriction, including without limitation the rights to use,

+ * copy, modify, merge, publish, distribute, sublicense, and/or sell

+ * copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following

+ * conditions:

+ *

+ * The above copyright notice and this permission notice shall be

+ * included in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

+ * OTHER DEALINGS IN THE SOFTWARE.

+ */

+

+/*******************************************************************************

+*   Header Files                                                               *

+*******************************************************************************/

+#include "tst.h"

+#include <stdarg.h>

+#include <stdio.h>

+#include <stdlib.h>

+#include <string.h>

+

+

+/*******************************************************************************

+*   Defined Constants And Macros                                               *

+*******************************************************************************/

+/** Select the appropriate KLDRSYMKIND bit define. */

+#define MY_KLDRSYMKIND_BITS     ( sizeof(void *) == 4 ? KLDRSYMKIND_32BIT : KLDRSYMKIND_64BIT )

+

+

+/*******************************************************************************

+*   Global Variables                                                           *

+*******************************************************************************/

+/** The numbers of errors. */

+static int g_cErrors = 0;

+

+

+

+/**

+ * Report failure.

+ */

+static int Failure(const char *pszFormat, ...)

+{

+    va_list va;

+

+    g_cErrors++;

+

+    printf("tst-0-driver: ");

+    va_start(va, pszFormat);

+    vprintf(pszFormat, va);

+    va_end(va);

+    printf("\n");

+    return 1;

+}

+

+

+int main(int argc, char **argv)

+{

+    const char *pszErrInit = "Error, szErr wasn't zapped";

+    char szErr[512];

+    char szBuf[512];

+    char *psz;

+    KSIZE cch;

+    HKLDRMOD hMod;

+    int rc;

+

+    /*

+     * The first thing to do is a simple load / unload test

+     * using the tst-0-a library (it'll drag in tst-0-d).

+     */

+    printf("tst-0-driver: Basic API test using 'tst-0-a'...\n");

+    hMod = (HKLDRMOD)0xffffeeee;

+    strcpy(szErr, pszErrInit);

+    rc = kLdrDyldLoad("tst-0-a", NULL, NULL, KLDRDYLD_SEARCH_HOST,

+                      KLDRDYLD_LOAD_FLAGS_RECURSIVE_INIT, &hMod, szErr, sizeof(szErr));

+    if (rc)

+        Failure("kLdrDyldLoad(\"tst-0\",...) failed, rc=%d (%#x). szErr='%s'.\n", rc, rc, szErr);

+    if (!strcmp(szErr, pszErrInit))

+        Failure("szErr wasn't set.\n");

+    if (hMod == (HKLDRMOD)0xffffeeee)

+        Failure("hMod wasn't set.\n");

+    if (hMod == NIL_HKLDRMOD && !rc)

+        Failure("rc=0 but hMod=NIL_HKLDRMOD\n");

+    if (!rc)

+    {

+        HKLDRMOD hMod2;

+        HKLDRMOD hMod3;

+        printf("tst-0-driver: hMod=%p ('tst-0-a')\n", (void *)hMod);

+

+        /*

+         * Simple test of kLdrDyldFindByName.

+         */

+        hMod2 = (HKLDRMOD)0xffffeeee;

+        rc = kLdrDyldFindByName("tst-0", NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hMod2);

+        if (!rc)

+            Failure("kLdrDyldFindByName(\"tst-0\",,,) didn't fail!\n");

+        if (rc && hMod2 != NIL_HKLDRMOD)

+            Failure("hMod2 wasn't set correctly on kLdrDyldFindByName failure!\n");

+

+        hMod2 = (HKLDRMOD)0xffffeeee;

+        rc = kLdrDyldFindByName("tst-0-a", NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hMod2);

+        if (rc)

+            Failure("kLdrDyldFindByName(\"tst-0-a\",,,) failed, rc=%d (%#x)\n", rc, rc);

+        if (!rc && hMod2 != hMod)

+            Failure("kLdrDyldFindByName(\"tst-0-a\",,,) returned the wrong module handle: %p instead of %p\n",

+                    (void *)hMod2, (void *)hMod);

+

+        hMod2 = (HKLDRMOD)0xffffeeee;

+        rc = kLdrDyldFindByName("tst-0-d", NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hMod2);

+        if (!rc)

+            printf("tst-0-driver: hMod2=%p ('tst-0-d')\n", (void *)hMod2);

+        else

+            Failure("kLdrDyldFindByName(\"tst-0-d\",,,) failed, rc=%d (%#x)\n", rc, rc);

+

+        /*

+         * Get the name and filename for each of the two modules.

+         */

+        rc = kLdrDyldGetName(hMod2, szBuf, sizeof(szBuf));

+        if (!rc)

+        {

+            printf("tst-0-driver: name: '%s' ('tst-0-d')\n", szBuf);

+            psz = strstr(szBuf, "-0-");

+            if (    !psz

+                ||  strnicmp(psz, "-0-d", sizeof("-0-d") - 1))

+                Failure("kLdrDyldGetName(\"tst-0-d\",,,) -> '%s': pattern '-0-d' not found\n", szBuf);

+

+            /* overflow test. */

+            cch = strlen(szBuf);

+            szBuf[cch + 1] = szBuf[cch] = szBuf[cch - 1] = 'x';

+            szBuf[cch + 2] = '\0';

+            rc = kLdrDyldGetName(hMod2, szBuf, cch);

+            if (rc == KERR_BUFFER_OVERFLOW)

+            {

+                if (!szBuf[0])

+                    Failure("kLdrDyldGetName didn't return partial result on overflow\n");

+                else if (szBuf[cch - 1])

+                    Failure("kLdrDyldGetName didn't terminate partial result correctly overflow: '%s'\n", szBuf);

+                else if (szBuf[cch] != 'x')

+                    Failure("kLdrDyldGetName exceeded the buffer limit on partial overflow: '%s'\n", szBuf);

+            }

+            else

+                Failure("kLdrDyldGetName(\"tst-0-d\",,,) -> rc=%d (%#x) instead of KERR_BUFFER_OVERFLOW\n", rc, rc);

+

+            /* check that we can query the module by the returned name. */

+            rc = kLdrDyldGetName(hMod2, szBuf, sizeof(szBuf));

+            if (!rc)

+            {

+                hMod3 = (HKLDRMOD)0xffffeeee;

+                rc = kLdrDyldFindByName(szBuf, NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hMod3);

+                if (rc || hMod3 != hMod2)

+                    Failure("kLdrDyldFindByName(\"%s\",,,) failed, rc=%d (%#x) hMod3=%p hMod2=%p\n",

+                            szBuf, rc, rc, (void *)hMod3, (void *)hMod2);

+            }

+            else

+                Failure("kLdrDyldGetName(\"tst-0-d\",,,) failed (b), rc=%d (%#x)\n", rc, rc);

+        }

+        else

+            Failure("kLdrDyldGetName(\"tst-0-d\",,,) failed, rc=%d (%#x)\n", rc, rc);

+

+        rc = kLdrDyldGetFilename(hMod2, szBuf, sizeof(szBuf));

+        if (!rc)

+        {

+            printf("tst-0-driver: filename: '%s' ('tst-0-d')\n", szBuf);

+

+            /* overflow test. */

+            cch = strlen(szBuf);

+            szBuf[cch + 1] = szBuf[cch] = szBuf[cch - 1] = 'x';

+            szBuf[cch + 2] = '\0';

+            rc = kLdrDyldGetFilename(hMod2, szBuf, cch);

+            if (rc == KERR_BUFFER_OVERFLOW)

+            {

+                if (!szBuf[0])

+                    Failure("kLdrDyldGetFilename didn't return partial result on overflow\n");

+                else if (szBuf[cch - 1])

+                    Failure("kLdrDyldGetFilename didn't terminate partial result correctly overflow: '%s'\n", szBuf);

+                else if (szBuf[cch] != 'x')

+                    Failure("kLdrDyldGetFilename exceeded the buffer limit on partial overflow: '%s'\n", szBuf);

+            }

+            else

+                Failure("kLdrDyldGetFilename(\"tst-0-d\",,,) -> rc=%d (%#x) instead of KERR_BUFFER_OVERFLOW\n", rc, rc);

+

+            /* check that we can query the module by the returned filename. */

+            rc = kLdrDyldGetFilename(hMod2, szBuf, sizeof(szBuf));

+            if (!rc)

+            {

+                hMod3 = (HKLDRMOD)0xffffeeee;

+                rc = kLdrDyldFindByName(szBuf, NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hMod3);

+                if (rc || hMod3 != hMod2)

+                    Failure("kLdrDyldFindByName(\"%s\",,,) failed, rc=%d (%#x) hMod3=%p hMod2=%p\n",

+                            szBuf, rc, rc, (void *)hMod3, (void *)hMod2);

+            }

+            else

+                Failure("kLdrDyldGetName(\"tst-0-d\",,,) failed (b), rc=%d (%#x)\n", rc, rc);

+        }

+        else

+            Failure("kLdrDyldGetFilename(\"tst-0-d\",,,) failed, rc=%d (%#x)\n", rc, rc);

+

+        /* the other module */

+        rc = kLdrDyldGetName(hMod, szBuf, sizeof(szBuf));

+        if (!rc)

+        {

+            printf("tst-0-driver: name: '%s' ('tst-0-a')\n", szBuf);

+            psz = strstr(szBuf, "-0-");

+            if (    !psz

+                ||  strnicmp(psz, "-0-a", sizeof("-0-a") - 1))

+                Failure("kLdrDyldGetName(\"tst-0-a\",,,) -> '%s': pattern '-0-a' not found\n", szBuf);

+

+            /* check that we can query the module by the returned name. */

+            hMod3 = (HKLDRMOD)0xffffeeee;

+            rc = kLdrDyldFindByName(szBuf, NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hMod3);

+            if (rc || hMod3 != hMod)

+                Failure("kLdrDyldFindByName(\"%s\",,,) failed, rc=%d (%#x) hMod3=%p hMod=%p\n",

+                        szBuf, rc, rc, (void *)hMod3, (void *)hMod);

+        }

+        else

+            Failure("kLdrDyldGetName(\"tst-0-a\",,,) failed, rc=%d (%#x)\n", rc, rc);

+

+        rc = kLdrDyldGetFilename(hMod, szBuf, sizeof(szBuf));

+        if (!rc)

+        {

+            printf("tst-0-driver: filename: '%s' ('tst-0-a')\n", szBuf);

+

+            /* check that we can query the module by the returned filename. */

+            hMod3 = (HKLDRMOD)0xffffeeee;

+            rc = kLdrDyldFindByName(szBuf, NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hMod3);

+            if (rc || hMod3 != hMod)

+                Failure("kLdrDyldFindByName(\"%s\",,,) failed, rc=%d (%#x) hMod3=%p hMod=%p\n",

+                        szBuf, rc, rc, (void *)hMod3, (void *)hMod);

+        }

+        else

+            Failure("kLdrDyldGetFilename(\"tst-0-a\",,,) failed, rc=%d (%#x)\n", rc, rc);

+

+

+        /*

+         * Resolve the symbol exported by each of the two modules and call them.

+         */

+        if (!g_cErrors)

+        {

+            KUPTR uValue;

+            KU32  fKind;

+

+            fKind = 0xffeeffee;

+            uValue = ~(KUPTR)42;

+            rc = kLdrDyldQuerySymbol(hMod, NIL_KLDRMOD_SYM_ORDINAL, MY_NAME("FuncA"), NULL, &uValue, &fKind);

+            if (!rc)

+            {

+                if (uValue == ~(KUPTR)42)

+                    Failure("kLdrDyldQuerySymbol(\"tst-0-a\",,\"FuncA\",): uValue wasn't set.\n");

+                if (fKind == 0xffeeffee)

+                    Failure("kLdrDyldQuerySymbol(\"tst-0-a\",,\"FuncA\",): fKind wasn't set.\n");

+                if (    (fKind & KLDRSYMKIND_BIT_MASK) != KLDRSYMKIND_NO_BIT

+                    &&  (fKind & KLDRSYMKIND_BIT_MASK) != MY_KLDRSYMKIND_BITS)

+                    Failure("fKind=%#x indicates a different code 'bit' mode than we running at.\n", fKind);

+                if (    (fKind & KLDRSYMKIND_TYPE_MASK) != KLDRSYMKIND_NO_TYPE

+                    &&  (fKind & KLDRSYMKIND_TYPE_MASK) != KLDRSYMKIND_CODE)

+                    Failure("fKind=%#x indicates that \"FuncA\" isn't code.\n", fKind);

+                if (fKind & KLDRSYMKIND_FORWARDER)

+                    Failure("fKind=%#x indicates that \"FuncA\" is a forwarder. it isn't.\n", fKind);

+

+                /* call it. */

+                if (!g_cErrors)

+                {

+                    int (*pfnFuncA)(void) = (int (*)(void))uValue;

+                    rc = pfnFuncA();

+                    if (rc != 0x42000042)

+                        Failure("FuncA returned %#x expected 0x42000042\n", rc);

+                }

+

+                /*

+                 * Test kLdrDyldFindByAddress now that we've got an address.

+                 */

+                hMod3 = (HKLDRMOD)0xeeeeffff;

+                rc = kLdrDyldFindByAddress(uValue, &hMod3, NULL, NULL);

+                if (!rc)

+                {

+                    KUPTR offSegment;

+                    KU32 iSegment;

+

+                    if (hMod3 != hMod)

+                        Failure("kLdrDyldFindByAddress(%#p/*FuncA*/, \"tst-0-a\",,,) return incorrect hMod3=%p instead of %p.\n",

+                                uValue, hMod3, hMod);

+

+                    hMod3 = (HKLDRMOD)0xeeeeffff;

+                    iSegment = 0x42424242;

+                    rc = kLdrDyldFindByAddress(uValue, &hMod3, &iSegment, &offSegment);

+                    if (!rc)

+                    {

+                        if (hMod3 != hMod)

+                            Failure("Bad hMod3 on 2nd kLdrDyldFindByAddress call.\n");

+                        if (iSegment > 0x1000) /* safe guess */

+                            Failure("Bad iSegment=%#x\n", iSegment);

+                        if (offSegment > 0x100000) /* guesswork */

+                            Failure("Bad offSegment=%p\n", (void *)offSegment);

+                    }

+                    else

+                        Failure("kLdrDyldFindByAddress(%#p/*FuncA*/, \"tst-0-a\",,,) failed (b), rc=%d (%#x)\n",

+                                uValue, rc, rc);

+

+                    /* negative test */

+                    hMod3 = (HKLDRMOD)0xeeeeffff;

+                    iSegment = 0x42424242;

+                    offSegment = 0x87654321;

+                    rc = kLdrDyldFindByAddress(~(KUPTR)16, &hMod3, &iSegment, &offSegment);

+                    if (!rc)

+                        Failure("negative kLdrDyldFindByAddress test returned successfully!\n");

+                    if (iSegment != ~(KU32)0)

+                        Failure("negative kLdrDyldFindByAddress: bad iSegment=%#x\n", iSegment);

+                    if (offSegment != ~(KUPTR)0)

+                        Failure("negative kLdrDyldFindByAddress: bad offSegment=%p\n", (void *)offSegment);

+                    if (hMod3 != NIL_HKLDRMOD)

+                        Failure("negative kLdrDyldFindByAddress: bad hMod3=%p\n", (void *)hMod3);

+                }

+                else

+                    Failure("kLdrDyldFindByAddress(%#p/*FuncA*/, \"tst-0-a\",,,) failed, rc=%d (%#x)\n",

+                            uValue, rc, rc);

+            }

+            else

+                Failure("kLdrDyldQuerySymbol(\"tst-0-a\",,\"FuncA\",) failed, rc=%d (%#x)\n", rc, rc);

+

+            fKind = 0xffeeffee;

+            uValue = ~(KUPTR)42;

+            rc = kLdrDyldQuerySymbol(hMod2, NIL_KLDRMOD_SYM_ORDINAL, MY_NAME("FuncD"), NULL, &uValue, &fKind);

+            if (!rc)

+            {

+                if (uValue == ~(KUPTR)42)

+                    Failure("kLdrDyldQuerySymbol(\"tst-0-d\",,\"FuncD\",): uValue wasn't set.\n");

+                if (fKind == 0xffeeffee)

+                    Failure("kLdrDyldQuerySymbol(\"tst-0-d\",,\"FuncD\",): fKind wasn't set.\n");

+                if (    (fKind & KLDRSYMKIND_BIT_MASK) != KLDRSYMKIND_NO_BIT

+                    &&  (fKind & KLDRSYMKIND_BIT_MASK) != MY_KLDRSYMKIND_BITS)

+                    Failure("fKind=%#x indicates a different code 'bit' mode than we running at.\n", fKind);

+                if (    (fKind & KLDRSYMKIND_TYPE_MASK) != KLDRSYMKIND_NO_TYPE

+                    &&  (fKind & KLDRSYMKIND_TYPE_MASK) != KLDRSYMKIND_CODE)

+                    Failure("fKind=%#x indicates that \"FuncD\" isn't code.\n", fKind);

+                if (fKind & KLDRSYMKIND_FORWARDER)

+                    Failure("fKind=%#x indicates that \"FuncD\" is a forwarder. it isn't.\n", fKind);

+

+                /* call it. */

+                if (!g_cErrors)

+                {

+                    int (*pfnFuncD)(void) = (int (*)(void))uValue;

+                    rc = pfnFuncD();

+                    if (rc != 0x42000000)

+                        Failure("FuncD returned %#x expected 0x42000000\n", rc);

+                }

+

+                /* use the address to get the module handle. */

+                hMod3 = (HKLDRMOD)0xeeeeffff;

+                rc = kLdrDyldFindByAddress(uValue, &hMod3, NULL, NULL);

+                if (!rc)

+                {

+                    if (hMod3 != hMod2)

+                        Failure("kLdrDyldFindByAddress(%#p/*FuncD*/,,,) return incorrect hMod3=%p instead of %p.\n",

+                                uValue, hMod3, hMod2);

+                }

+                else

+                    Failure("kLdrDyldFindByAddress(%#p/*FuncD*/,,,) failed, rc=%d (%#x)\n",

+                            uValue, rc, rc);

+            }

+            else

+                Failure("kLdrDyldQuerySymbol(\"tst-0-a\",,\"FuncA\",) failed, rc=%d (%#x)\n", rc, rc);

+

+        }

+

+        /*

+         * Finally unload it.

+         */

+        rc = kLdrDyldUnload(hMod);

+        if (rc)

+            Failure("kLdrDyldUnload() failed. rc=%d (%#x)\n", rc, rc);

+        if (!rc)

+        {

+            rc = kLdrDyldFindByName("tst-0-d", NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hMod2);

+            if (rc != KLDR_ERR_MODULE_NOT_FOUND)

+                Failure("kLdrDyldFindByName(\"tst-0-d\",,,) return rc=%d (%#x), expected KLDR_ERR_MODULE_NOT_FOUND\n", rc, rc);

+

+            rc = kLdrDyldFindByName("tst-0-a", NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hMod2);

+            if (rc != KLDR_ERR_MODULE_NOT_FOUND)

+                Failure("kLdrDyldFindByName(\"tst-0-a\",,,) return rc=%d (%#x), expected KLDR_ERR_MODULE_NOT_FOUND\n", rc, rc);

+        }

+    }

+

+    /*

+     * Now do what tst-0 would do; load the three dlls, resolve and call their functions.

+     */

+    if (!g_cErrors)

+    {

+        HKLDRMOD hModA;

+        int (*pfnFuncA)(void);

+        HKLDRMOD hModB;

+        int (*pfnFuncB)(void);

+        HKLDRMOD hModC;

+        int (*pfnFuncC)(void);

+        KUPTR uValue;

+

+        rc = kLdrDyldLoad("tst-0-a", NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hModA, NULL, 0);

+        if (rc)

+            Failure("kLdrDyldLoad(\"tst-0-a\",,,,) -> %d (%#x)\n", rc, rc);

+        if (!rc)

+        {

+            rc = kLdrDyldLoad("tst-0-b", NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hModB, szErr, sizeof(szErr));

+            if (rc)

+                Failure("kLdrDyldLoad(\"tst-0-b\",,,,) -> %d (%#x) szErr='%s'\n", rc, rc, szErr);

+        }

+        if (!rc)

+        {

+            rc = kLdrDyldLoad("tst-0-c", NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hModC, szErr, sizeof(szErr));

+            if (rc)

+                Failure("kLdrDyldLoad(\"tst-0-c\",,,,) -> %d (%#x) szErr='%s'\n", rc, rc, szErr);

+        }

+        if (!rc)

+        {

+            rc = kLdrDyldQuerySymbol(hModA, NIL_KLDRMOD_SYM_ORDINAL, MY_NAME("FuncA"), NULL, &uValue, NULL);

+            if (!rc)

+                pfnFuncA = (int (*)(void))uValue;

+            else

+                Failure("kLdrDyldQuerySymbol(,,\"FuncA\",,) -> %d (%#x)\n", rc, rc);

+        }

+        if (!rc)

+        {

+            rc = kLdrDyldQuerySymbol(hModB, NIL_KLDRMOD_SYM_ORDINAL, MY_NAME("FuncB"), NULL, &uValue, NULL);

+            if (!rc)

+                pfnFuncB = (int (*)(void))uValue;

+            else

+                Failure("kLdrDyldQuerySymbol(,,\"FuncB\",,) -> %d (%#x)\n", rc, rc);

+        }

+        if (!rc)

+        {

+            rc = kLdrDyldQuerySymbol(hModC, NIL_KLDRMOD_SYM_ORDINAL, MY_NAME("FuncC"), NULL, &uValue, NULL);

+            if (!rc)

+                pfnFuncC = (int (*)(void))uValue;

+            else

+                Failure("kLdrDyldQuerySymbol(,,\"FuncA\",,) -> %d (%#x)\n", rc, rc);

+        }

+        if (!rc)

+        {

+            int u = pfnFuncA() | pfnFuncB() | pfnFuncC();

+            if (u == 0x42424242)

+                printf("tst-0-driver: FuncA/B/C => %#x (correct)\n", u);

+            else

+                Failure("FuncA/B/C => %#x\n", u);

+

+            rc = kLdrDyldUnload(hModA);

+            if (rc)

+                Failure("Unload A failed, rc=%d (%#x)\n", rc, rc);

+            u = pfnFuncB() | pfnFuncC();

+            if (u != 0x42424200)

+                Failure("FuncB/C returns %#x instead of 0x42424200 after unloading A\n", u);

+

+            rc = kLdrDyldUnload(hModB);

+            if (rc)

+                Failure("Unload B failed, rc=%d (%#x)\n", rc, rc);

+            u = pfnFuncC();

+            if (u != 0x42420000)

+                Failure("FuncC returns %#x instead of 0x42420000 after unloading A\n", u);

+

+            rc = kLdrDyldUnload(hModC);

+            if (rc)

+                Failure("Unload C failed, rc=%d (%#x)\n", rc, rc);

+

+            rc = kLdrDyldFindByName("tst-0-d", NULL, NULL, KLDRDYLD_SEARCH_HOST, 0, &hMod);

+            if (rc != KLDR_ERR_MODULE_NOT_FOUND)

+                Failure("Query for \"tst-0-d\" after unloading A,B and C returns rc=%d (%#x) instead of KLDR_ERR_MODULE_NOT_FOUND\n",

+                        rc, rc);

+        }

+    }

+

+    /*

+     * Now invoke the executable stub which launches the tst-0 program.

+     */

+    if (!g_cErrors)

+    {

+        /// @todo

+    }

+

+    /*

+     * Summary

+     */

+    if (!g_cErrors)

+        printf("tst-0-driver: SUCCESS\n");

+    else

+        printf("tst-0-driver: FAILURE - %d errors\n", g_cErrors);

+    return !!g_cErrors;

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-0.c b/src/lib/kStuff/kLdr/testcase/tst-0.c
new file mode 100644
index 0000000..d19c35c
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-0.c
@@ -0,0 +1,13 @@
+#include "tst.h"

+

+MY_IMPORT(int) FuncA(void);

+MY_IMPORT(int) FuncB(void);

+MY_IMPORT(int) FuncC(void);

+

+int main()

+{

+    unsigned u;

+    u = FuncA() | FuncB() | FuncC();

+    return u == 0x42424242 ? 0 : 1;

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-1-a.c b/src/lib/kStuff/kLdr/testcase/tst-1-a.c
new file mode 100644
index 0000000..d554112
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-1-a.c
@@ -0,0 +1,10 @@
+#include "tst.h"

+const char *g_pszName = "a";

+

+MY_IMPORT(int) FuncD(void);

+

+MY_EXPORT(int) FuncA(void)

+{

+    return FuncD();

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-1-b.c b/src/lib/kStuff/kLdr/testcase/tst-1-b.c
new file mode 100644
index 0000000..5156e58
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-1-b.c
@@ -0,0 +1,10 @@
+#include "tst.h"

+const char *g_pszName = "b";

+

+MY_IMPORT(int) FuncD(void);

+

+MY_EXPORT(int) FuncB(void)

+{

+    return FuncD();

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-1-c.c b/src/lib/kStuff/kLdr/testcase/tst-1-c.c
new file mode 100644
index 0000000..c40f55d
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-1-c.c
@@ -0,0 +1,10 @@
+#include "tst.h"

+const char *g_pszName = "c";

+

+MY_IMPORT(int) FuncD(void);

+

+MY_EXPORT(int) FuncC(void)

+{

+    return FuncD();

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-1-d.c b/src/lib/kStuff/kLdr/testcase/tst-1-d.c
new file mode 100644
index 0000000..ab8bf93
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-1-d.c
@@ -0,0 +1,8 @@
+#include "tst.h"

+const char *g_pszName = "d";

+

+MY_EXPORT(int) FuncD(void)

+{

+    return 0;

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-1.c b/src/lib/kStuff/kLdr/testcase/tst-1.c
new file mode 100644
index 0000000..58b9770
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-1.c
@@ -0,0 +1,15 @@
+#include "tst.h"

+#include <stdio.h>

+

+MY_IMPORT(int) FuncA(void);

+MY_IMPORT(int) FuncB(void);

+MY_IMPORT(int) FuncC(void);

+

+int main()

+{

+    printf("graph:\n"

+           "  tst-1 -> a -> d\n"

+           "           b -> d\n"

+           "           c -> d\n");

+    return FuncA() + FuncB() + FuncC();

+}

diff --git a/src/lib/kStuff/kLdr/testcase/tst-2-a.c b/src/lib/kStuff/kLdr/testcase/tst-2-a.c
new file mode 100644
index 0000000..274f92e
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-2-a.c
@@ -0,0 +1,8 @@
+#include "tst.h"

+const char *g_pszName = "a";

+

+MY_EXPORT(int) FuncA(void)

+{

+    return 0;

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-2-b.c b/src/lib/kStuff/kLdr/testcase/tst-2-b.c
new file mode 100644
index 0000000..63c2c58
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-2-b.c
@@ -0,0 +1,10 @@
+#include "tst.h"

+const char *g_pszName = "b";

+

+MY_IMPORT(int) FuncA(void);

+

+MY_EXPORT(int) FuncB(void)

+{

+    return FuncA();

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-2-c.c b/src/lib/kStuff/kLdr/testcase/tst-2-c.c
new file mode 100644
index 0000000..29ab68f
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-2-c.c
@@ -0,0 +1,10 @@
+#include "tst.h"

+const char *g_pszName = "c";

+

+MY_IMPORT(int) FuncA(void);

+

+MY_EXPORT(int) FuncC(void)

+{

+    return FuncA();

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-2-d.c b/src/lib/kStuff/kLdr/testcase/tst-2-d.c
new file mode 100644
index 0000000..34efd0a
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-2-d.c
@@ -0,0 +1,10 @@
+#include "tst.h"

+const char *g_pszName = "d";

+

+MY_IMPORT(int) FuncA(void);

+

+MY_EXPORT(int) FuncD(void)

+{

+    return FuncA();

+}

+

diff --git a/src/lib/kStuff/kLdr/testcase/tst-2.c b/src/lib/kStuff/kLdr/testcase/tst-2.c
new file mode 100644
index 0000000..6110a4b
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-2.c
@@ -0,0 +1,16 @@
+#include "tst.h"

+

+MY_IMPORT(int) FuncA(void);

+MY_IMPORT(int) FuncB(void);

+MY_IMPORT(int) FuncC(void);

+MY_IMPORT(int) FuncD(void);

+

+int main()

+{

+    printf("graph:\n"

+           "  tst-2 -> b -> a\n"

+           "           c -> a\n"

+           "           d -> a\n"

+           "           a\n");

+    return FuncA() + FuncB() + FuncC() + FuncD();

+}

diff --git a/src/lib/kStuff/kLdr/testcase/tst-3-driver.c b/src/lib/kStuff/kLdr/testcase/tst-3-driver.c
new file mode 100644
index 0000000..483a585
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-3-driver.c
@@ -0,0 +1,216 @@
+/* $Id: tst-3-driver.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - Dynamic Loader testcase no. 3, Driver.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "tst.h"
+#include <k/kErr.h>
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef _MSC_VER
+# include <malloc.h>
+#endif
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** Select the appropriate KLDRSYMKIND bit define. */
+#define MY_KLDRSYMKIND_BITS     ( sizeof(void *) == 4 ? KLDRSYMKIND_32BIT : KLDRSYMKIND_64BIT )
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** The numbers of errors. */
+static int g_cErrors = 0;
+
+
+/**
+ * Report failure.
+ */
+static int Failure(const char *pszFormat, ...)
+{
+    va_list va;
+
+    g_cErrors++;
+
+    printf("tst-3-driver: ");
+    va_start(va, pszFormat);
+    vprintf(pszFormat, va);
+    va_end(va);
+    printf("\n");
+    return 1;
+}
+
+
+/**
+ * External symbol used by the testcase module.
+ */
+static int Tst3Ext(int iFortyTwo)
+{
+    if (iFortyTwo != 42)
+        return 256;
+    return 42;
+}
+
+
+/**
+ * Callback for resolving the Tst3Ext import.
+ */
+static int GetImport(PKLDRMOD pMod, KU32 iImport, KU32 iSymbol, const char *pchSymbol, KSIZE cchSymbol,
+                     const char *pszVersion, PKLDRADDR puValue, KU32 *pfKind, void *pvUser)
+{
+    if (*pfKind != KLDRSYMKIND_REQ_FLAT)
+        return -1;
+
+    if (    !strncmp(pchSymbol, "Tst3Ext", strlen("Tst3Ext"))
+        ||  !strncmp(pchSymbol, "_Tst3Ext", strlen("_Tst3Ext")))
+    {
+        *puValue = (KUPTR)&Tst3Ext;
+        *pfKind = KLDRSYMKIND_CODE | (sizeof(pfKind) == 4 ? KLDRSYMKIND_32BIT : KLDRSYMKIND_64BIT);
+        return 0;
+    }
+
+    return -2;
+}
+
+
+/**
+ * Performs the tests on one module.
+ * @returns non sense.
+ */
+int TestModule(const char *pszFile)
+{
+    PKLDRMOD pMod;
+    KLDRSIZE cbImage;
+    void *pvBits;
+    int rc;
+
+    printf("tst-3-driver: testing '%s'...\n", pszFile);
+
+    /* open it. */
+    rc = kLdrModOpen(pszFile, &pMod);
+    if (rc)
+        return Failure("kLdrModOpen(%s,) -> %#d (%s)\n", pszFile, rc, kErrName(rc));
+
+    /* get bits. */
+    cbImage = kLdrModSize(pMod);
+    pvBits = malloc((KSIZE)cbImage + 0xfff);
+    if (pvBits)
+    {
+        void *pvBits2 = (void *)( ((KUPTR)pvBits + 0xfff) & ~(KUPTR)0xfff );
+
+        KLDRADDR BaseAddress = (KUPTR)pvBits2;
+        rc = kLdrModGetBits(pMod, pvBits2, BaseAddress, GetImport, NULL);
+        if (!rc)
+        {
+            KLDRADDR EntryPoint;
+
+            /* call into it */
+            rc = kLdrModQuerySymbol(pMod, pvBits2, BaseAddress, NIL_KLDRMOD_SYM_ORDINAL, "_Tst3", strlen("_Tst3"), NULL, NULL, NULL,
+                                    &EntryPoint, NULL);
+            if (rc == KLDR_ERR_SYMBOL_NOT_FOUND)
+                rc = kLdrModQuerySymbol(pMod, pvBits2, BaseAddress, NIL_KLDRMOD_SYM_ORDINAL, "Tst3", strlen("Tst3"), NULL, NULL, NULL,
+                                        &EntryPoint, NULL);
+            if (!rc)
+            {
+                int (*pfnEntryPoint)(int) = (int (*)(int)) ((KUPTR)EntryPoint);
+                rc = pfnEntryPoint(42);
+                if (rc == 42)
+                {
+                    /* relocate twice and try again. */
+                    rc = kLdrModRelocateBits(pMod, pvBits2, BaseAddress + 0x22000, BaseAddress, GetImport, NULL);
+                    if (!rc)
+                    {
+                        rc = kLdrModRelocateBits(pMod, pvBits2, BaseAddress, BaseAddress + 0x22000, GetImport, NULL);
+                        if (!rc)
+                        {
+                            rc = pfnEntryPoint(42);
+                            if (rc == 42)
+                            {
+                                printf("tst-3-driver: success.\n");
+                            }
+                            else
+                                Failure("pfnEntryPoint(42) -> %d (2nd)\n", rc);
+                        }
+                        else
+                            Failure("kLdrModRelocateBits(,,, + 0x22000,,,) -> %#x (%s)\n", rc, kErrName(rc));
+                    }
+                    else
+                        Failure("kLdrModRelocateBits(,, + 0x22000,,,,) -> %#x (%s)\n", rc, kErrName(rc));
+                }
+                else
+                    Failure("pfnEntryPoint(42) -> %d (1st)\n", rc);
+            }
+            else
+                Failure("kLdrModQuerySymbol -> %#x (%s)\n", rc, kErrName(rc));
+        }
+        else
+            Failure("kLdrModGetBits -> %#x (%s)\n", rc, kErrName(rc));
+        free(pvBits);
+    }
+    else
+        Failure("malloc(%lx) -> NULL\n", (long)cbImage);
+
+    /* clean up */
+    rc = kLdrModClose(pMod);
+    if (rc)
+        Failure("kLdrModOpen(%s,) -> %#x (%s)\n", pszFile, rc, kErrName(rc));
+    return 0;
+}
+
+
+int main(int argc, char **argv)
+{
+    int i;
+
+    /*
+     * Test all the given modules (requires arguments).
+     */
+    for (i = 1; i < argc; i++)
+    {
+        TestModule(argv[i]);
+    }
+
+
+    /*
+     * Summary
+     */
+    if (!g_cErrors)
+        printf("tst-3-driver: SUCCESS\n");
+    else
+        printf("tst-3-driver: FAILURE - %d errors\n", g_cErrors);
+    return !!g_cErrors;
+}
diff --git a/src/lib/kStuff/kLdr/testcase/tst-3-ext.c b/src/lib/kStuff/kLdr/testcase/tst-3-ext.c
new file mode 100644
index 0000000..2b4c839
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-3-ext.c
@@ -0,0 +1,39 @@
+/* $Id: tst-3-ext.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - Dynamic Loader testcase no. 3, 2nd object module.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "tst.h"
+
+extern int g_i1;
+
+int Tst3Sub(int iFortyTwo)
+{
+    return iFortyTwo * 11 * g_i1;
+}
+
diff --git a/src/lib/kStuff/kLdr/testcase/tst-3-imp-os2.def b/src/lib/kStuff/kLdr/testcase/tst-3-imp-os2.def
new file mode 100644
index 0000000..9ec3b13
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-3-imp-os2.def
@@ -0,0 +1,34 @@
+; $Id: tst-3-imp-os2.def 29 2009-07-01 20:30:29Z bird $
+;; @file
+; kLdr - Dynamic Loader testcase no. 3, Fake module import library - OS/2.
+;
+
+;
+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+;
+; Permission is hereby granted, free of charge, to any person
+; obtaining a copy of this software and associated documentation
+; files (the "Software"), to deal in the Software without
+; restriction, including without limitation the rights to use,
+; copy, modify, merge, publish, distribute, sublicense, and/or sell
+; copies of the Software, and to permit persons to whom the
+; Software is furnished to do so, subject to the following
+; conditions:
+;
+; The above copyright notice and this permission notice shall be
+; included in all copies or substantial portions of the Software.
+;
+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+; OTHER DEALINGS IN THE SOFTWARE.
+;
+
+LIBRARY tst-3-imp
+EXPORTS
+    _Tst3Ext
+
diff --git a/src/lib/kStuff/kLdr/testcase/tst-3-imp-win.def b/src/lib/kStuff/kLdr/testcase/tst-3-imp-win.def
new file mode 100644
index 0000000..7381804
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-3-imp-win.def
@@ -0,0 +1,34 @@
+; $Id: tst-3-imp-win.def 29 2009-07-01 20:30:29Z bird $
+;; @file
+; kLdr - Dynamic Loader testcase no. 3, Fake module import library - Windows.
+;
+
+;
+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+;
+; Permission is hereby granted, free of charge, to any person
+; obtaining a copy of this software and associated documentation
+; files (the "Software"), to deal in the Software without
+; restriction, including without limitation the rights to use,
+; copy, modify, merge, publish, distribute, sublicense, and/or sell
+; copies of the Software, and to permit persons to whom the
+; Software is furnished to do so, subject to the following
+; conditions:
+;
+; The above copyright notice and this permission notice shall be
+; included in all copies or substantial portions of the Software.
+;
+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+; OTHER DEALINGS IN THE SOFTWARE.
+;
+
+LIBRARY tst-3-imp
+EXPORTS
+    Tst3Ext
+
diff --git a/src/lib/kStuff/kLdr/testcase/tst-3.c b/src/lib/kStuff/kLdr/testcase/tst-3.c
new file mode 100644
index 0000000..ed89d9e
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst-3.c
@@ -0,0 +1,78 @@
+/* $Id: tst-3.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - Dynamic Loader testcase no. 3, Driver.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "tst.h"
+
+
+int g_i1 = 1;
+int g_i2 = 2;
+int *g_pi1 = &g_i1;
+
+extern int Tst3Sub(int);
+int (*g_pfnTst3Sub)(int) = &Tst3Sub;
+
+MY_IMPORT(int) Tst3Ext(int);
+int (*g_pfnTst3Ext)(int) = &Tst3Ext;
+
+char g_achBss[256];
+
+
+MY_EXPORT(int) Tst3(int iFortyTwo)
+{
+    int rc;
+
+    if (iFortyTwo != 42)
+        return 0;
+    if (g_i1 != 1)
+        return 1;
+    if (g_i2 != 2)
+        return 2;
+    if (g_pi1 != &g_i1)
+        return 3;
+    if (g_pfnTst3Sub != &Tst3Sub)
+        return 4;
+    rc = Tst3Sub(iFortyTwo);
+    if (rc != g_pfnTst3Sub(iFortyTwo))
+        return 5;
+    rc = Tst3Ext(iFortyTwo);
+    if (rc != 42)
+        return 6;
+    rc = g_pfnTst3Ext(iFortyTwo);
+    if (rc != 42)
+        return 7;
+    for (rc = 0; rc < sizeof(g_achBss); rc++)
+        if (g_achBss[rc])
+            return 8;
+    if (g_achBss[0] || g_achBss[1] || g_achBss[255])
+        return 9;
+
+    return 42;
+}
+
diff --git a/src/lib/kStuff/kLdr/testcase/tst.h b/src/lib/kStuff/kLdr/testcase/tst.h
new file mode 100644
index 0000000..f06dba7
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tst.h
@@ -0,0 +1,57 @@
+/* $Id: tst.h 29 2009-07-01 20:30:29Z bird $ */

+/** @file

+ * kLdr testcase header.

+ */

+

+/*

+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>

+ *

+ * Permission is hereby granted, free of charge, to any person

+ * obtaining a copy of this software and associated documentation

+ * files (the "Software"), to deal in the Software without

+ * restriction, including without limitation the rights to use,

+ * copy, modify, merge, publish, distribute, sublicense, and/or sell

+ * copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following

+ * conditions:

+ *

+ * The above copyright notice and this permission notice shall be

+ * included in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

+ * OTHER DEALINGS IN THE SOFTWARE.

+ */

+

+#ifndef ___tst_h___

+#define ___tst_h___

+

+#include <k/kLdr.h>

+#include <k/kHlp.h>

+

+#if K_OS == K_OS_OS2 \

+ || K_OS == K_OS_WINDOWS

+# define MY_EXPORT(type) __declspec(dllexport) type

+/*# define MY_IMPORT(type) extern __declspec(dllimport) type*/

+# define MY_IMPORT(type) extern type

+#else

+# define MY_EXPORT(type) type

+# define MY_IMPORT(type) extern type

+#endif

+

+#if K_OS == K_OS_OS2 \

+ || K_OS == K_OS_DARWIN

+# define MY_NAME(a) "_" a

+#else

+# define MY_NAME(a) a

+#endif

+

+extern const char *g_pszName;

+

+#endif

+

diff --git a/src/lib/kStuff/kLdr/testcase/tstDllMain.c b/src/lib/kStuff/kLdr/testcase/tstDllMain.c
new file mode 100644
index 0000000..b86819c
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tstDllMain.c
@@ -0,0 +1,192 @@
+/* $Id: tstDllMain.c 29 2009-07-01 20:30:29Z bird $ */

+/** @file

+ * kLdr testcase.

+ */

+

+/*

+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>

+ *

+ * Permission is hereby granted, free of charge, to any person

+ * obtaining a copy of this software and associated documentation

+ * files (the "Software"), to deal in the Software without

+ * restriction, including without limitation the rights to use,

+ * copy, modify, merge, publish, distribute, sublicense, and/or sell

+ * copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following

+ * conditions:

+ *

+ * The above copyright notice and this permission notice shall be

+ * included in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

+ * OTHER DEALINGS IN THE SOFTWARE.

+ */

+

+/*******************************************************************************

+*   Header Files                                                               *

+*******************************************************************************/

+#include "tst.h"

+

+#if K_OS == K_OS_OS2

+# define INCL_BASE

+# include <os2.h>

+# include <string.h>

+

+#elif K_OS == K_OS_WINDOWS

+# include <windows.h>

+# include <string.h>

+

+#elif K_OS == K_OS_DARWIN

+# include <unistd.h>

+# include <string.h>

+

+#else

+# error "port me"

+#endif

+

+

+/*******************************************************************************

+*   Internal Functions                                                         *

+*******************************************************************************/

+void tstWrite(const char *psz);

+

+

+

+#if K_OS == K_OS_OS2

+/**

+ * OS/2 DLL 'main'

+ */

+ULONG _System _DLL_InitTerm(HMODULE hmod, ULONG fFlags)

+{

+    switch (fFlags)

+    {

+        case 0:

+            tstWrite("init: ");

+            tstWrite(g_pszName);

+            tstWrite("\n");

+            return TRUE;

+

+        case 1:

+            tstWrite("term: ");

+            tstWrite(g_pszName);

+            tstWrite("\n");

+            return TRUE;

+

+        default:

+            tstWrite("!invalid!: ");

+            tstWrite(g_pszName);

+            tstWrite("\n");

+            return FALSE;

+    }

+}

+

+#elif K_OS == K_OS_WINDOWS

+

+/**

+ * OS/2 DLL 'main'

+ */

+BOOL __stdcall DllMain(HANDLE hDllHandle, DWORD dwReason, LPVOID lpReserved)

+{

+    switch (dwReason)

+    {

+        case DLL_PROCESS_ATTACH:

+            tstWrite("init: ");

+            tstWrite(g_pszName);

+            tstWrite("\n");

+            return TRUE;

+

+        case DLL_PROCESS_DETACH:

+            tstWrite("term: ");

+            tstWrite(g_pszName);

+            tstWrite("\n");

+            return TRUE;

+

+        case DLL_THREAD_ATTACH:

+            tstWrite("thread init: ");

+            tstWrite(g_pszName);

+            tstWrite("\n");

+            return TRUE;

+

+        case DLL_THREAD_DETACH:

+            tstWrite("thread term: ");

+            tstWrite(g_pszName);

+            tstWrite("\n");

+            return TRUE;

+

+        default:

+            tstWrite("!invalid!: ");

+            tstWrite(g_pszName);

+            tstWrite("\n");

+            return FALSE;

+    }

+}

+

+#elif K_OS == K_OS_DARWIN

+/* later */

+

+#else

+# error "port me"

+#endif

+

+

+/**

+ * Writes a string with unix lineendings.

+ *

+ * @param   pszMsg  The string.

+ */

+void tstWrite(const char *pszMsg)

+{

+#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS

+    /*

+     * Line by line.

+     */

+    ULONG       cbWritten;

+    const char *pszNl = strchr(pszMsg, '\n');

+

+    while (pszNl)

+    {

+        cbWritten = pszNl - pszMsg;

+

+#if K_OS == K_OS_OS2

+        if (cbWritten)

+            DosWrite((HFILE)2, pszMsg, cbWritten, &cbWritten);

+        DosWrite((HFILE)2, "\r\n", 2, &cbWritten);

+#else

+        if (cbWritten)

+            WriteFile((HANDLE)STD_ERROR_HANDLE, pszMsg, cbWritten, &cbWritten, NULL);

+        WriteFile((HANDLE)STD_ERROR_HANDLE, "\r\n", 2, &cbWritten, NULL);

+#endif

+

+        /* next */

+        pszMsg = pszNl + 1;

+        pszNl = strchr(pszMsg, '\n');

+    }

+

+    /*

+     * Remaining incomplete line.

+     */

+    if (*pszMsg)

+    {

+        cbWritten = strlen(pszMsg);

+#if K_OS == K_OS_OS2

+        DosWrite((HFILE)2, pszMsg, cbWritten, &cbWritten);

+#else

+        WriteFile((HANDLE)STD_ERROR_HANDLE, pszMsg, cbWritten, &cbWritten, NULL);

+#endif

+    }

+

+#elif K_OS == K_OS_DARWIN

+    write(STDERR_FILENO, pszMsg, strlen(pszMsg));

+

+#else

+# error "port me"

+#endif

+}

+

+

diff --git a/src/lib/kStuff/kLdr/testcase/tstDllMainStub-os2.asm b/src/lib/kStuff/kLdr/testcase/tstDllMainStub-os2.asm
new file mode 100644
index 0000000..76dad01
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tstDllMainStub-os2.asm
@@ -0,0 +1,40 @@
+; $Id: tstDllMainStub-os2.asm 29 2009-07-01 20:30:29Z bird $
+;; @file
+; kLdr - OS/2 entry point thingy...
+;
+
+;
+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+;
+; Permission is hereby granted, free of charge, to any person
+; obtaining a copy of this software and associated documentation
+; files (the "Software"), to deal in the Software without
+; restriction, including without limitation the rights to use,
+; copy, modify, merge, publish, distribute, sublicense, and/or sell
+; copies of the Software, and to permit persons to whom the
+; Software is furnished to do so, subject to the following
+; conditions:
+;
+; The above copyright notice and this permission notice shall be
+; included in all copies or substantial portions of the Software.
+;
+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+; OTHER DEALINGS IN THE SOFTWARE.
+;
+
+segment TEXT32 public CLASS=CODE align=16 use32
+extern _DLL_InitTerm
+..start:
+    jmp _DLL_InitTerm
+
+segment DATA32 stack CLASS=DATA align=16 use32
+
+global WEAK$ZERO
+WEAK$ZERO EQU 0
+
diff --git a/src/lib/kStuff/kLdr/testcase/tstDllMainStub.c b/src/lib/kStuff/kLdr/testcase/tstDllMainStub.c
new file mode 100644
index 0000000..67681c8
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tstDllMainStub.c
@@ -0,0 +1,76 @@
+/* $Id: tstDllMainStub.c 29 2009-07-01 20:30:29Z bird $ */

+/** @file

+ * kLdr testcase - DLL Stub.

+ */

+

+/*

+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>

+ *

+ * Permission is hereby granted, free of charge, to any person

+ * obtaining a copy of this software and associated documentation

+ * files (the "Software"), to deal in the Software without

+ * restriction, including without limitation the rights to use,

+ * copy, modify, merge, publish, distribute, sublicense, and/or sell

+ * copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following

+ * conditions:

+ *

+ * The above copyright notice and this permission notice shall be

+ * included in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

+ * OTHER DEALINGS IN THE SOFTWARE.

+ */

+

+/*******************************************************************************

+*   Header Files                                                               *

+*******************************************************************************/

+#include "tst.h"

+

+#if K_OS == K_OS_OS2

+# define INCL_BASE

+# include <os2.h>

+

+#elif K_OS == K_OS_WINDOWS

+# include <windows.h>

+

+#elif K_OS == K_OS_DARWIN

+/* later */

+

+#else

+# error "port me"

+#endif

+

+

+#if K_OS == K_OS_OS2

+/**

+ * OS/2 DLL 'main'

+ */

+ULONG _System _DLL_InitTerm(HMODULE hmod, ULONG fFlag)

+{

+    return TRUE;

+}

+

+#elif K_OS == K_OS_WINDOWS

+

+/**

+ * Window DLL 'main'

+ */

+BOOL __stdcall DllMain(HANDLE hDllHandle, DWORD dwReason, LPVOID lpReserved)

+{

+    return TRUE;

+}

+

+#elif K_OS == K_OS_DARWIN

+/* later */

+

+#else

+# error "port me"

+#endif

+

diff --git a/src/lib/kStuff/kLdr/testcase/tstExeMainStub-os2.asm b/src/lib/kStuff/kLdr/testcase/tstExeMainStub-os2.asm
new file mode 100644
index 0000000..d4a8ee9
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tstExeMainStub-os2.asm
@@ -0,0 +1,40 @@
+; $Id: tstExeMainStub-os2.asm 29 2009-07-01 20:30:29Z bird $
+;; @file
+; kLdr - OS/2 entry point thingy...
+;
+
+;
+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+;
+; Permission is hereby granted, free of charge, to any person
+; obtaining a copy of this software and associated documentation
+; files (the "Software"), to deal in the Software without
+; restriction, including without limitation the rights to use,
+; copy, modify, merge, publish, distribute, sublicense, and/or sell
+; copies of the Software, and to permit persons to whom the
+; Software is furnished to do so, subject to the following
+; conditions:
+;
+; The above copyright notice and this permission notice shall be
+; included in all copies or substantial portions of the Software.
+;
+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+; OTHER DEALINGS IN THE SOFTWARE.
+;
+
+segment TEXT32 public CLASS=CODE align=16 use32
+extern OS2Main
+..start:
+    jmp OS2Main
+
+segment DATA32 stack CLASS=DATA align=16 use32
+
+global WEAK$ZERO
+WEAK$ZERO EQU 0
+
diff --git a/src/lib/kStuff/kLdr/testcase/tstExeMainStub.c b/src/lib/kStuff/kLdr/testcase/tstExeMainStub.c
new file mode 100644
index 0000000..9ec9f47
--- /dev/null
+++ b/src/lib/kStuff/kLdr/testcase/tstExeMainStub.c
@@ -0,0 +1,93 @@
+/* $Id: tstExeMainStub.c 29 2009-07-01 20:30:29Z bird $ */

+/** @file

+ * kLdr testcase - DLL Stub.

+ */

+

+/*

+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>

+ *

+ * Permission is hereby granted, free of charge, to any person

+ * obtaining a copy of this software and associated documentation

+ * files (the "Software"), to deal in the Software without

+ * restriction, including without limitation the rights to use,

+ * copy, modify, merge, publish, distribute, sublicense, and/or sell

+ * copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following

+ * conditions:

+ *

+ * The above copyright notice and this permission notice shall be

+ * included in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

+ * OTHER DEALINGS IN THE SOFTWARE.

+ */

+

+/*******************************************************************************

+*   Header Files                                                               *

+*******************************************************************************/

+#include "tst.h"

+

+#if K_OS == K_OS_OS2

+# define INCL_BASE

+# include <os2.h>

+

+#elif K_OS == K_OS_WINDOWS

+/* nothing */

+

+#elif K_OS == K_OS_NT

+# include <ddk/ntapi.h> /** @todo fix the nt port. */

+

+#else

+# error "port me"

+#endif

+

+

+extern int main();

+

+

+#if K_OS == K_OS_OS2

+/**

+ * OS/2 'main'.

+ */

+ULONG _System OS2Main(HMODULE hmod, ULONG fFlag, ULONG ulReserved, PSZ pszzEnv, PSZ pszzCmdLine)

+{

+    int rc;

+    rc = main();

+    return rc;

+}

+

+#elif K_OS == K_OS_WINDOWS

+/**

+ * Windows'main'

+ */

+int WindowsMain(void)

+{

+    int rc;

+    rc = main();

+    return rc;

+}

+

+#elif K_OS == K_OS_NT

+/**

+ * Windows NT 'main'

+ */

+VOID NtProcess(HANDLE hDllHandle, DWORD dwReason, LPVOID lpReserved)

+{

+    int rc;

+    rc = main();

+    /* (no way around this) */

+    for (;;)

+        ZwTerminateProcess(NtCurrentProcess(), rc);

+}

+

+#else

+# error "port me"

+#endif

+

+

diff --git a/src/lib/kStuff/kLdr/tg/KLDRSTATE.gif b/src/lib/kStuff/kLdr/tg/KLDRSTATE.gif
new file mode 100644
index 0000000..2c9004d
--- /dev/null
+++ b/src/lib/kStuff/kLdr/tg/KLDRSTATE.gif
diff --git a/src/lib/kStuff/kLdr/tg/KLDRSTATE.txvstc b/src/lib/kStuff/kLdr/tg/KLDRSTATE.txvstc
new file mode 100644
index 0000000..fc4f3c8
--- /dev/null
+++ b/src/lib/kStuff/kLdr/tg/KLDRSTATE.txvstc
@@ -0,0 +1,529 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<nodeSet version="1.0">
+    <view uin="id83t9setug73fpetug74ah">
+        <property name="$metaclass" value="State Diagram"/>
+        <property name="@__options" value=""/>
+        <reference df-class-name="reference" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid4wa62etug73fpetug7hpd">
+            <property name="$shortcutReference" value="true"/>
+            <property name="bounds" value="90,40,80,40"/>
+            <property name="bounds_setted_by_user" value="true"/>
+            <reference referencedUin="design:link:::id83t9setug73fpetug74ah.nodeid4wa62etug73fpetug7hpd.linkid7iy6aetug73fpetugal1c:id83t9setug73fpetug74ah.nodeid4wa62etug73fpetug7hpd">
+                <property name="sourceAnchor" value="130,80"/>
+                <property name="bendpoints" value=""/>
+                <property name="targetAnchor" value="130,110"/>
+            </reference>
+            <reference referencedUin="design:link:::id83t9setug73fpetug74ah.nodeid4wa62etug73fpetug7hpd.linkid14j0oetug73fpetugbmyx:id83t9setug73fpetug74ah.nodeid4wa62etug73fpetug7hpd">
+                <property name="sourceAnchor" value="90,70"/>
+                <property name="bendpoints" value="30,70,30,1000"/>
+                <property name="targetAnchor" value="150,1000"/>
+                <property name="bounds_setted_by_user" value="true"/>
+                <reference referencedUin="linklabel:$transitionInplaceEditing:design:link:::id83t9setug73fpetug74ah.nodeid4wa62etug73fpetug7hpd.linkid14j0oetug73fpetugbmyx:id83t9setug73fpetug74ah.nodeid4wa62etug73fpetug7hpd">
+                    <property name="bounds" value="10,50,77,16"/>
+                </reference>
+            </reference>
+        </reference>
+        <reference df-class-name="reference1" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid67r7zetug73fpetug87g4">
+            <property name="$shortcutReference" value="true"/>
+            <property name="background_color" value="0,0,0"/>
+            <property name="bounds" value="120,0,12,12"/>
+            <reference referencedUin="design:link:::id83t9setug73fpetug74ah.nodeid67r7zetug73fpetug87g4.linkid2j70ketug73fpetug8gs8:id83t9setug73fpetug74ah.nodeid67r7zetug73fpetug87g4">
+                <property name="sourceAnchor" value="126,12"/>
+                <property name="bendpoints" value=""/>
+                <property name="targetAnchor" value="126,40"/>
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+        </reference>
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+        <property name="$name" value="Reloaded"/>
+        <link uin="id83t9setug73fpetug74ah.nodeidq28metug73fpetug8uf9.linkidd5q0etug73fpetugl30f">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid6t6upetug73fpetugj6k4"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeidq28metug73fpetug8uf9"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+        <link uin="id83t9setug73fpetug74ah.nodeidq28metug73fpetug8uf9.linkid2yl8cetug73fpetugl74g">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid7q41getug73fpetugejq5"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeidq28metug73fpetug8uf9"/>
+            <property name="$metaclass" value="Transition"/>
+            <property name="$event_name" value="done (failed)"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid7et8etug73fpetug938l">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="LoadedPrerequisites"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid7et8etug73fpetug938l.linkid82puetug73fpetugbwui">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid3wom6etug73fpetugb9cg"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid7et8etug73fpetug938l"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+        <link uin="id83t9setug73fpetug74ah.nodeid7et8etug73fpetug938l.linkidr4phetug73fpetugcezv">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid71qrcetug73fpetuga3zj"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid7et8etug73fpetug938l"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid71qrcetug73fpetuga3zj">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="FixedUp"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid71qrcetug73fpetuga3zj.linkid4fiuhetug73fpetugbs4x">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid3wom6etug73fpetugb9cg"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid71qrcetug73fpetuga3zj"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+        <link uin="id83t9setug73fpetug74ah.nodeid71qrcetug73fpetuga3zj.linkid8ewc7etug73fpetughpzu">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid6yrvpetui3nn8etui62p3"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid71qrcetug73fpetuga3zj"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid3wom6etug73fpetugb9cg">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="PendingDestroy"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid3wom6etug73fpetugb9cg.linkid80127etug73fpetugd66b">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid7vd8retug73fpetugcr3e"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid3wom6etug73fpetugb9cg"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid7vd8retug73fpetugcr3e">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="Destroyed"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid7vd8retug73fpetugcr3e.linkid8h4qnetug73fpetugf6j3">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid17bz7etug73fpetugf23i"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid7vd8retug73fpetugcr3e"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid417yeetug73fpetugeb3p">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="GC"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid417yeetug73fpetugeb3p.linkid6ngyletug73fpetugehbp">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid3wom6etug73fpetugb9cg"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid417yeetug73fpetugeb3p"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid7q41getug73fpetugejq5">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="PendingGC"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid7q41getug73fpetugejq5.linkid6vibeetug73fpetugephi">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid417yeetug73fpetugeb3p"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid7q41getug73fpetugejq5"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+        <link uin="id83t9setug73fpetug74ah.nodeid7q41getug73fpetugejq5.linkid1izxmetug73fpetugesem">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeidq28metug73fpetug8uf9"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid7q41getug73fpetugejq5"/>
+            <property name="$metaclass" value="Transition"/>
+            <property name="$event_name" value="Loaded again"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid17bz7etug73fpetugf23i">
+        <property name="$metaclass" value="End State"/>
+        <property name="$name" value="EndState1"/>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid6b4f8etug73fpetugfa3i">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="PendingInitialization"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid6b4f8etug73fpetugfa3i.linkidy5coetug73fpetughmwy">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid2vt9ietug73fpetugfjhj"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid6b4f8etug73fpetugfa3i"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+        <link uin="id83t9setug73fpetug74ah.nodeid6b4f8etug73fpetugfa3i.linkid989qmetug73fpetugi623">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid7q41getug73fpetugejq5"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid6b4f8etug73fpetugfa3i"/>
+            <property name="$metaclass" value="Transition"/>
+            <property name="$event_name" value="Other init failure"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid2vt9ietug73fpetugfjhj">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="Initializing"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid2vt9ietug73fpetugfjhj.linkid2yeeuetug73fpetughfff">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid8048etug73fpetugfpwv"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid2vt9ietug73fpetugfjhj"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+        <link uin="id83t9setug73fpetug74ah.nodeid2vt9ietug73fpetugfjhj.linkid7b0d0etug73fpetughibe">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid3z4oketug73fpetuggjl4"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid2vt9ietug73fpetugfjhj"/>
+            <property name="$metaclass" value="Transition"/>
+            <property name="$event_name" value="Failed"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid8048etug73fpetugfpwv">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="Good"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid8048etug73fpetugfpwv.linkid5imvsetug73fpetughcca">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeidswftetug73fpetugfwd3"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid8048etug73fpetugfpwv"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeidswftetug73fpetugfwd3">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="PendingTermination"/>
+        <link uin="id83t9setug73fpetug74ah.nodeidswftetug73fpetugfwd3.linkid3jvhdetug73fpetugiz5h">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid9bbfsetug73fpetugirr0"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeidswftetug73fpetugfwd3"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+        <link uin="id83t9setug73fpetug74ah.nodeidswftetug73fpetugfwd3.linkid7ockpetuqdc66etuqdq4c">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid8048etug73fpetugfpwv"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeidswftetug73fpetugfwd3"/>
+            <property name="$metaclass" value="Transition"/>
+            <property name="$event_name" value="Loaded again"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid3z4oketug73fpetuggjl4">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="InitializationFailed"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid3z4oketug73fpetuggjl4.linkidotudetug73fpetugilak">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid417yeetug73fpetugeb3p"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid3z4oketug73fpetuggjl4"/>
+            <property name="$metaclass" value="Transition"/>
+            <property name="$event_name" value="Do GC"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid9bbfsetug73fpetugirr0">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="Terminating"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid9bbfsetug73fpetugirr0.linkids5u8etug73fpetugj2bq">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid7q41getug73fpetugejq5"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid9bbfsetug73fpetugirr0"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid6t6upetug73fpetugj6k4">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="ReloadedLoadedPrerequisites"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid6t6upetug73fpetugj6k4.linkid733w4etug73fpetuglagw">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid5e0mxetug73fpetugjk65"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid6t6upetug73fpetugj6k4"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+        <link uin="id83t9setug73fpetug74ah.nodeid6t6upetug73fpetugj6k4.linkid529snetug73fpetuglmq0">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid7q41getug73fpetugejq5"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid6t6upetug73fpetugj6k4"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid5e0mxetug73fpetugjk65">
+        <property name="$metaclass" value="State"/>
+        <property name="$name" value="ReloadedFixedUp"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid5e0mxetug73fpetugjk65.linkid5watyetug73fpetugle5c">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid6yrvpetui3nn8etui62p3"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid5e0mxetug73fpetugjk65"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+        <link uin="id83t9setug73fpetug74ah.nodeid5e0mxetug73fpetugjk65.linkidcf8yetug73fpetuglj2g">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid7q41getug73fpetugejq5"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid5e0mxetug73fpetugjk65"/>
+            <property name="$metaclass" value="Transition"/>
+        </link>
+    </node>
+    <node uin="id83t9setug73fpetug74ah.nodeid6yrvpetui3nn8etui62p3">
+        <property name="$orientation" value="horizontal"/>
+        <property name="$metaclass" value="Synchronization Bar"/>
+        <property name="$name" value="SyncBar1"/>
+        <link uin="id83t9setug73fpetug74ah.nodeid6yrvpetui3nn8etui62p3.linkid4uffpetui3nn8etui6xmx">
+            <participant role="Supplier" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid6b4f8etug73fpetugfa3i"/>
+            <participant role="Client" referencedUin="design:node:::id83t9setug73fpetug74ah.nodeid6yrvpetui3nn8etui62p3"/>
+            <property name="$metaclass" value="Transition"/>
+            <property name="$event_name" value="Fixed up all modules"/>
+        </link>
+    </node>
+</nodeSet>
diff --git a/src/lib/kStuff/kLdr/tg/default.txvpck b/src/lib/kStuff/kLdr/tg/default.txvpck
new file mode 100644
index 0000000..b253f0f
--- /dev/null
+++ b/src/lib/kStuff/kLdr/tg/default.txvpck
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<nodeSet version="1.0">
+    <view uin="id309n7etug73fpetug73wh">
+        <property name="$metaclass" value="Package Diagram"/>
+        <property name="@__options" value=""/>
+        <property name="$defaultDiagram" value=""/>
+    </view>
+</nodeSet>
diff --git a/src/lib/kStuff/kLdr/tg/kLdr.tpr b/src/lib/kStuff/kLdr/tg/kLdr.tpr
new file mode 100644
index 0000000..fb3d016
--- /dev/null
+++ b/src/lib/kStuff/kLdr/tg/kLdr.tpr
@@ -0,0 +1,23 @@
+[Project]
+Language=cpp
+Root.0=$PROJECT_DIR$
+Root.0.access=writable
+Root.0.file_types=cpp_source;cpp_header;diagram
+Root.0.package_prefix=
+Version=3.0
+projectfile.encoding=MS932
+Root.1=$TGH$/jdk/jre/lib/rt.jar
+Root.1.access=import
+Root.1.non_removable=
+[workspace]
+Developer.CodingWorkspace={{0,2,-1,0,0,0,0,0,0,1,0,50,75,25,-1,-1,-1,-1}${0,1,-1,0,0,0,0,1,0,1,0,50,75,25,-1,-1,-1,-1}${0,3,-1,0,0,0,0,1,0,1,0,66,50,25,-1,-1,-1,-1}${0,3,-1,0,0,0,0,1,0,1,0,66,50,25,-1,-1,-1,-1}${0,-1,-1,0,0,0,0,0,0,1,0,5,5,5,-1,-1,-1,-1}${0,5,-1,0,0,0,0,0,0,1,0,50,50,25,-1,-1,-1,-1}${0,4,-1,0,0,0,0,1,0,1,1,66,50,25,-1,-1,-1,-1}${0,7,-1,0,0,0,0,0,0,1,0,50,50,75,-1,-1,-1,-1}}
+Developer.DebugWorkspace={{0,2,-1,0,0,0,0,0,0,1,0,50,75,25,-1,-1,-1,-1}${0,1,-1,0,0,0,0,1,0,1,1,50,75,25,-1,-1,-1,-1}${0,3,-1,0,0,0,0,0,0,1,0,50,50,25,-1,-1,-1,-1}${0,3,-1,0,0,0,0,0,0,1,0,50,50,25,-1,-1,-1,-1}${0,-1,-1,0,0,0,0,0,0,1,0,5,5,5,-1,-1,-1,-1}${0,4,-1,0,0,0,0,0,0,1,0,50,50,25,-1,-1,-1,-1}${0,0,-1,0,0,0,0,1,0,1,0,75,5,5,-1,-1,-1,-1}${0,7,-1,0,0,0,0,0,0,1,0,50,50,75,-1,-1,-1,-1}}
+Developer.DesignWorkspace={{0,2,-1,0,0,0,0,1,0,1,0,50,75,22,-1,-1,-1,-1}${0,1,-1,0,0,0,0,0,0,1,0,50,75,22,-1,-1,-1,-1}${0,3,-1,0,0,0,0,1,0,1,0,50,50,22,-1,-1,-1,-1}${0,3,-1,0,0,0,0,1,0,1,0,50,50,22,-1,-1,-1,-1}${0,-1,-1,0,0,0,0,0,0,1,0,5,5,5,-1,-1,-1,-1}${0,4,-1,0,0,0,0,1,0,1,1,50,50,22,-1,-1,-1,-1}${0,0,-1,0,0,0,0,0,0,1,0,75,5,5,-1,-1,-1,-1}${0,7,-1,0,0,0,0,0,0,1,0,50,50,75,-1,-1,-1,-1}}
+Developer.kLdr={{0,2,-1,0,0,0,0,1,0,1,1,50,75,22,-1,-1,-1,-1}${0,1,-1,0,0,0,0,0,0,1,0,50,75,22,-1,-1,-1,-1}${0,3,-1,0,0,0,0,1,0,1,0,50,50,22,-1,-1,-1,-1}${0,3,-1,0,0,0,0,1,0,1,0,50,50,22,-1,-1,-1,-1}${0,-1,-1,0,0,0,0,0,0,1,0,5,5,5,-1,-1,-1,-1}${0,4,-1,0,0,0,0,1,0,1,0,50,50,22,-1,-1,-1,-1}${0,0,-1,0,0,0,0,0,0,1,0,75,5,5,-1,-1,-1,-1}${0,7,-1,0,0,0,0,0,0,1,0,50,50,75,-1,-1,-1,-1}}
+names.Developer={kLdr,DesignWorkspace,CodingWorkspace,DebugWorkspace}
+[vcs]
+provider.class=CVS LAN
+[lastOpenProjectName]
+Developer=kLdr
+[model]
+showDiagramContents=true
diff --git a/src/lib/kStuff/kLdr/tg/kLdr.tws b/src/lib/kStuff/kLdr/tg/kLdr.tws
new file mode 100644
index 0000000..4730025
--- /dev/null
+++ b/src/lib/kStuff/kLdr/tg/kLdr.tws
@@ -0,0 +1,2 @@
+workspace.diagram.active = <oiref:design#Class#id83t9setug73fpetug74ah.diagram:oiref>
+workspace.diagram.open.0 = <oiref:design#Class#id83t9setug73fpetug74ah.diagram:oiref>
diff --git a/src/lib/kStuff/kLdr/tstkLdrHeap.c b/src/lib/kStuff/kLdr/tstkLdrHeap.c
new file mode 100644
index 0000000..a5891dd
--- /dev/null
+++ b/src/lib/kStuff/kLdr/tstkLdrHeap.c
@@ -0,0 +1,223 @@
+/* $Id: tstkLdrHeap.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - Heap testcase.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kLdr.h>
+#include <k/kHlp.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+#define CHECK_FATAL(expr) \
+    do { if (!(expr)) { printf("tstkLdrHeap(%d): FATAL FAILURE - %s\n", __LINE__, #expr); return 1; } \
+    } while (0)
+
+#define CHECK(expr) \
+    do { if (!(expr)) { printf("tstkLdrHeap(%d): ERROR - %s\n", __LINE__, #expr); cErrors++; kHlpAssertBreakpoint();} \
+    } while (0)
+
+
+/**
+ * Get a random size.
+ * @returns random size.
+ */
+static unsigned RandSize(void)
+{
+    unsigned i = (unsigned)rand() % (256*1024 - 1);
+    return i ? i : 1;
+}
+
+/**
+ * Get a random index.
+ * @returns random index.
+ * @param   cEntries    The number of entries in the table.
+ */
+static unsigned RandIdx(unsigned cEntries)
+{
+    unsigned i = (unsigned)rand();
+    while (i >= cEntries)
+        i >>= 1;
+    return i;
+}
+
+#if 0
+# define kHlpAlloc(a) malloc(a)
+# define kHlpFree(a) free(a)
+#endif
+
+int main()
+{
+    int cErrors = 0;
+    int rc;
+#define MAX_ALLOCS 256
+    static struct
+    {
+        void *pv;
+        unsigned cb;
+    } s_aAllocs[MAX_ALLOCS];
+    unsigned cAllocs;
+    unsigned i;
+    unsigned j;
+
+    /*
+     * Some simple init / term.
+     */
+    rc = kHlpHeapInit();
+    CHECK_FATAL(!rc);
+    kHlpHeapTerm();
+
+    rc = kHlpHeapInit();
+    CHECK_FATAL(!rc);
+    kHlpHeapTerm();
+
+
+    /*
+     * Simple alloc all, free all in FIFO order.
+     */
+    rc = kHlpHeapInit();
+    CHECK_FATAL(!rc);
+
+    /* 1. allocate all slots. */
+    for (i = 0; i < MAX_ALLOCS; i++)
+    {
+        s_aAllocs[i].cb = RandSize();
+        s_aAllocs[i].pv = kHlpAlloc(s_aAllocs[i].cb);
+        CHECK(s_aAllocs[i].pv);
+    }
+
+    /* 2. free all slots. */
+    for (i = 0; i < MAX_ALLOCS; i++)
+        kHlpFree(s_aAllocs[i].pv);
+
+    /* terminate */
+    kHlpHeapTerm();
+
+
+    /*
+     * Simple alloc all, free all in LIFO order.
+     */
+    rc = kHlpHeapInit();
+    CHECK_FATAL(!rc);
+
+    /* 1. allocate all slots. */
+    for (i = 0; i < MAX_ALLOCS; i++)
+    {
+        s_aAllocs[i].cb = RandSize();
+        s_aAllocs[i].pv = kHlpAlloc(s_aAllocs[i].cb);
+        CHECK(s_aAllocs[i].pv);
+    }
+
+    /* 2. free all slots. */
+    i = MAX_ALLOCS;
+    while (i-- > 0)
+        kHlpFree(s_aAllocs[i].pv);
+
+    /* terminate */
+    kHlpHeapTerm();
+
+
+    /*
+     * Bunch of allocations, free half, allocate and free in pairs, free all.
+     */
+    rc = kHlpHeapInit();
+    CHECK_FATAL(!rc);
+
+    /* 1. allocate all slots. */
+    for (i = 0; i < MAX_ALLOCS; i++)
+    {
+        s_aAllocs[i].cb = RandSize();
+        s_aAllocs[i].pv = kHlpAlloc(s_aAllocs[i].cb);
+        CHECK(s_aAllocs[i].pv);
+    }
+    cAllocs = MAX_ALLOCS;
+
+    /* 2. free half (random order). */
+    while (cAllocs > MAX_ALLOCS / 2)
+    {
+        i = RandIdx(cAllocs);
+        kHlpFree(s_aAllocs[i].pv);
+        cAllocs--;
+        if (i != cAllocs)
+            s_aAllocs[i] = s_aAllocs[cAllocs];
+    }
+
+    /* 3. lots of alloc and free activity. */
+    for (j = 0; j < MAX_ALLOCS * 32; j++)
+    {
+        /* allocate */
+        unsigned cMax = RandIdx(MAX_ALLOCS / 4) + 1;
+        while (cAllocs < MAX_ALLOCS && cMax-- > 0)
+        {
+            i = cAllocs;
+            s_aAllocs[i].cb = RandSize();
+            s_aAllocs[i].pv = kHlpAlloc(s_aAllocs[i].cb);
+            CHECK(s_aAllocs[i].pv);
+            cAllocs++;
+        }
+
+        /* free */
+        cMax = RandIdx(MAX_ALLOCS / 4) + 1;
+        while (cAllocs > MAX_ALLOCS / 2 && cMax-- > 0)
+        {
+            i = RandIdx(cAllocs);
+            kHlpFree(s_aAllocs[i].pv);
+            cAllocs--;
+            if (i != cAllocs)
+                s_aAllocs[i] = s_aAllocs[cAllocs];
+        }
+    }
+
+    /* 4. free all */
+    while (cAllocs > 0)
+    {
+        i = RandIdx(cAllocs);
+        kHlpFree(s_aAllocs[i].pv);
+        cAllocs--;
+        if (i != cAllocs)
+            s_aAllocs[i] = s_aAllocs[cAllocs];
+    }
+
+    /* terminate */
+    kHlpHeapTerm();
+
+
+    /* summary */
+    if (!cErrors)
+        printf("tstkLdrHeap: SUCCESS\n");
+    else
+        printf("tstkLdrHeap: FAILURE - %d errors\n", cErrors);
+    return !!cErrors;
+}
diff --git a/src/lib/kStuff/kLdr/tstkLdrMod.c b/src/lib/kStuff/kLdr/tstkLdrMod.c
new file mode 100644
index 0000000..c49907b
--- /dev/null
+++ b/src/lib/kStuff/kLdr/tstkLdrMod.c
@@ -0,0 +1,629 @@
+/* $Id: tstkLdrMod.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kLdr - Module interpreter testcase.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kLdr.h>
+#include <k/kErr.h>
+#include <k/kErrors.h>
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** The default base address used in the tests. */
+#define MY_BASEADDRESS      0x2400000
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** The numbers of errors. */
+static int g_cErrors = 0;
+
+
+
+/**
+ * Report failure.
+ */
+static int Failure(const char *pszFormat, ...)
+{
+    va_list va;
+
+    g_cErrors++;
+
+    printf("tstLdrMod: ");
+    va_start(va, pszFormat);
+    vprintf(pszFormat, va);
+    va_end(va);
+    printf("\n");
+    return 1;
+}
+
+
+/** Dummy import resolver callback. */
+static int BasicTestsGetImport(PKLDRMOD pMod, KU32 iImport, KU32 iSymbol, const char *pchSymbol, KSIZE cchSymbol,
+                               const char *pszVersion, PKLDRADDR puValue, KU32 *pfKind, void *pvUser)
+{
+    *puValue = 0xdeadface;
+    *pfKind = KLDRSYMKIND_NO_BIT | KLDRSYMKIND_NO_TYPE;
+    return 0;
+}
+
+
+/**
+ * Verbose memcmp().
+ */
+static int TestMemComp(const void *pv1, const void *pv2, KSIZE cb)
+{
+    KSIZE           off;
+    const KU8      *pb1 = (const KU8 *)pv1;
+    const KU8      *pb2 = (const KU8 *)pv2;
+    if (!memcmp(pb1, pb2, cb))
+        return 0;
+    printf("Mismatching blocks pv1=%p pv2=%p cb=%#x:\n", pv1, pv2, cb);
+    for (off = 0; off < cb; off++)
+    {
+        if (pb1[off] == pb2[off])
+            continue;
+        printf("%08x %02x != %02x\n", off, pb1[off], pb2[off]);
+    }
+    return memcmp(pb1, pb2, cb); /* lazy */
+}
+
+
+/**
+ * Performs basic relocation tests.
+ */
+static int BasicTestsRelocate(PKLDRMOD pMod, void *pvBits, void *pvBits2)
+{
+    const KSIZE cbImage = (KSIZE)kLdrModSize(pMod);
+    int rc;
+
+    printf("* Relocation test...\n");
+
+    /*
+     * Get the same bits again to check that we get the same result.
+     */
+    memset(pvBits2, 0xfe, cbImage);
+    rc = kLdrModGetBits(pMod, pvBits2, (KUPTR)pvBits, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to get image bits, rc=%d (%s) (a)", rc, kErrName(rc));
+    if (TestMemComp(pvBits2, pvBits, cbImage))
+        return Failure("relocation test failed, mismatching bits (a)");
+
+    /*
+     * Short relocation round trip.
+     */
+    rc = kLdrModRelocateBits(pMod, pvBits2, 0x1000, (KUPTR)pvBits, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to relocate, rc=%d (%s) (b1)", rc, kErrName(rc));
+    rc = kLdrModRelocateBits(pMod, pvBits2, (KUPTR)pvBits, 0x1000, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to relocate, rc=%d (%s) (b2)", rc, kErrName(rc));
+    if (TestMemComp(pvBits2, pvBits, cbImage))
+        return Failure("relocation test failed, mismatching bits (b)");
+
+    /*
+     * Longer trip where we also check the intermediate results.
+     */
+    /* stage one */
+    rc = kLdrModRelocateBits(pMod, pvBits, 0x1000000, (KUPTR)pvBits, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to relocate, rc=%d (%s) (c1)", rc, kErrName(rc));
+    memset(pvBits2, 0xfe, cbImage);
+    rc = kLdrModGetBits(pMod, pvBits2, 0x1000000, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to get image bits, rc=%d (%s) (c1)", rc, kErrName(rc));
+    if (TestMemComp(pvBits2, pvBits, cbImage))
+        return Failure("relocation test failed, mismatching bits (c1)");
+
+    /* stage two */
+    rc = kLdrModRelocateBits(pMod, pvBits, ~(KUPTR)0x1010000, 0x1000000, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to relocate, rc=%d (%s) (c2)", rc, kErrName(rc));
+    memset(pvBits2, 0xef, cbImage);
+    rc = kLdrModGetBits(pMod, pvBits2, ~(KUPTR)0x1010000, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to get image bits, rc=%d (%s) (c2)", rc, kErrName(rc));
+    if (TestMemComp(pvBits2, pvBits, cbImage))
+        return Failure("relocation test failed, mismatching bits (c2)");
+
+    /* stage three */
+    rc = kLdrModRelocateBits(pMod, pvBits, MY_BASEADDRESS, ~(KUPTR)0x1010000, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to relocate, rc=%d (%s) (c3)", rc, kErrName(rc));
+    memset(pvBits2, 0xef, cbImage);
+    rc = kLdrModGetBits(pMod, pvBits2, MY_BASEADDRESS, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to get image bits, rc=%d (%s) (c3)", rc, kErrName(rc));
+    if (TestMemComp(pvBits2, pvBits, cbImage))
+        return Failure("relocation test failed, mismatching bits (c3)");
+
+    /* stage four */
+    rc = kLdrModRelocateBits(pMod, pvBits, ~(KUPTR)0 / 2 - 0x10000, MY_BASEADDRESS, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to relocate, rc=%d %(s) (c4)", rc, kErrName(rc));
+    memset(pvBits2, 0xdc, cbImage);
+    rc = kLdrModGetBits(pMod, pvBits2, ~(KUPTR)0 / 2 - 0x10000, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to get image bits, rc=%d (%s) (c4)", rc, kErrName(rc));
+    if (TestMemComp(pvBits2, pvBits, cbImage))
+        return Failure("relocation test failed, mismatching bits (c4)");
+
+    /* return */
+    rc = kLdrModRelocateBits(pMod, pvBits, (KUPTR)pvBits, ~(KUPTR)0 / 2 - 0x10000, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to relocate, rc=%d (%s) (c5)", rc, kErrName(rc));
+    memset(pvBits2, 0xcd, cbImage);
+    rc = kLdrModGetBits(pMod, pvBits2, (KUPTR)pvBits, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to get image bits, rc=%d (%s) (c5)", rc, kErrName(rc));
+    if (TestMemComp(pvBits2, pvBits, cbImage))
+        return Failure("relocation test failed, mismatching bits (c5)");
+
+    return 0;
+}
+
+
+/**
+ * Dump symbols and check that we can query each of them recursivly.
+ */
+static int BasicTestsEnumSymCallback(PKLDRMOD pMod, KU32 iSymbol, const char *pchSymbol, KSIZE cchSymbol,
+                                     const char *pszVersion, KLDRADDR uValue, KU32 fKind, void *pvUser)
+{
+    KLDRADDR    uValue2;
+    KU32        fKind2;
+    int         rc;
+
+    /* dump */
+    printf("#0x%08x: %016" PRI_KLDRADDR " %#08x", iSymbol, uValue, fKind);
+    if (pchSymbol)
+        printf(" %.*s", cchSymbol, pchSymbol);
+    printf("\n");
+
+    /* query by ordinal */
+    if (iSymbol != NIL_KLDRMOD_SYM_ORDINAL)
+    {
+        fKind2 = 0;
+        rc = kLdrModQuerySymbol(pMod, pvUser, MY_BASEADDRESS, iSymbol, NULL, 0, NULL, NULL, NULL,
+                                &uValue2, &fKind2);
+        if (rc)
+            return Failure("Couldn't find symbol %#x (%.*s) by ordinal. rc=%d (%s)", iSymbol, cchSymbol, pchSymbol, rc, kErrName(rc));
+        if (uValue != uValue2)
+            return Failure("Symbol %#x (%.*s): Value mismatch %016" PRI_KLDRADDR " != %016" PRI_KLDRADDR " (enum!=query/ord)  pvBits=%p",
+                           iSymbol, cchSymbol, pchSymbol, uValue, uValue2, pvUser);
+        if (fKind != fKind2)
+            return Failure("Symbol %#x (%.*s): Kind mismatch %#x != %#x (enum!=query/ord) pvBits=%p",
+                           iSymbol, cchSymbol, pchSymbol, fKind, fKind2, pvUser);
+    }
+
+    /* query by name. */
+    if (pchSymbol)
+    {
+        fKind2 = 0;
+        rc = kLdrModQuerySymbol(pMod, pvUser, MY_BASEADDRESS, NIL_KLDRMOD_SYM_ORDINAL, pchSymbol, cchSymbol, pszVersion,
+                                NULL, NULL, &uValue2, &fKind2);
+        if (rc)
+            return Failure("Couldn't find symbol %#x (%.*s) by name. rc=%d (%s)", iSymbol, cchSymbol, pchSymbol, rc, kErrName(rc));
+        if (uValue != uValue2)
+            return Failure("Symbol %#x (%.*s): Value mismatch %016" PRI_KLDRADDR " != %016" PRI_KLDRADDR " (enum!=query/name) pvBits=%p",
+                           iSymbol, cchSymbol, pchSymbol, uValue, uValue2, pvUser);
+        if (fKind != fKind2)
+            return Failure("Symbol %#x (%.*s): Kind mismatch %#x != %#x (enum!=query/name) pvBits=%p",
+                           iSymbol, cchSymbol, pchSymbol, fKind, fKind2, pvUser);
+    }
+
+    return 0;
+}
+
+
+/**
+ * Dump debugger information and check it for correctness.
+ */
+static int BasicTestEnumDbgInfoCallback(PKLDRMOD pMod, KU32 iDbgInfo, KLDRDBGINFOTYPE enmType,
+                                        KI16 iMajorVer, KI16 iMinorVer, KLDRFOFF offFile, KLDRADDR LinkAddress,
+                                        KLDRSIZE cb, const char *pszExtFile, void *pvUser)
+{
+    printf("#0x%08x: enmType=%d %d.%d offFile=0x%" PRI_KLDRADDR " LinkAddress=%" PRI_KLDRADDR " cb=%" PRI_KLDRSIZE " pvUser=%p\n",
+           iDbgInfo, enmType, iMajorVer, iMinorVer, (KLDRADDR)offFile, LinkAddress, cb, pvUser);
+    if (pszExtFile)
+        printf("            pszExtFile=%p '%s'\n", pszExtFile, pszExtFile);
+
+    if (enmType >= KLDRDBGINFOTYPE_END || enmType <= KLDRDBGINFOTYPE_INVALID)
+        return Failure("Bad enmType");
+    if (pvUser != NULL)
+        return Failure("pvUser");
+
+    return 0;
+}
+
+
+/**
+ * Performs the basic module loader test on the specified module and image bits.
+ */
+static int BasicTestsSub2(PKLDRMOD pMod, void *pvBits)
+{
+    KI32 cImports;
+    KI32 i;
+    int rc;
+    KU32 fKind;
+    KLDRADDR Value;
+    KLDRADDR MainEPAddress;
+    KLDRSTACKINFO StackInfo;
+
+    printf("* Testing queries with pvBits=%p...\n", pvBits);
+
+    /*
+     * Get the import modules.
+     */
+    cImports = kLdrModNumberOfImports(pMod, pvBits);
+    printf("cImports=%d\n", cImports);
+    if (cImports < 0)
+        return Failure("failed to query the number of import, cImports=%d", cImports);
+    for (i = 0; i < cImports; i++)
+    {
+        char szImportModule[260];
+        rc = kLdrModGetImport(pMod, pvBits, i, szImportModule, sizeof(szImportModule));
+        if (rc)
+            return Failure("failed to get import module name, rc=%d (%s). (%.260s)", rc, kErrName(rc), szImportModule);
+        printf("import #%d: '%s'\n", i, szImportModule);
+    }
+
+    /*
+     * Query stack info.
+     */
+    StackInfo.Address = ~(KLDRADDR)42;
+    StackInfo.LinkAddress = ~(KLDRADDR)42;
+    StackInfo.cbStack = ~(KLDRSIZE)42;
+    StackInfo.cbStackThread = ~(KLDRSIZE)42;
+    rc = kLdrModGetStackInfo(pMod, pvBits, MY_BASEADDRESS, &StackInfo);
+    if (rc)
+        return Failure("kLdrModGetStackInfo failed with rc=%d (%s)", rc, kErrName(rc));
+    printf("Stack: Address=%016" PRI_KLDRADDR "   LinkAddress=%016" PRI_KLDRADDR "\n"
+           "       cbStack=%016" PRI_KLDRSIZE " cbStackThread=%016" PRI_KLDRSIZE "\n",
+           StackInfo.Address, StackInfo.LinkAddress, StackInfo.cbStack, StackInfo.cbStackThread);
+    if (StackInfo.Address == ~(KLDRADDR)42)
+        return Failure("Bad StackInfo.Address");
+    if (StackInfo.LinkAddress == ~(KLDRADDR)42)
+        return Failure("Bad StackInfo.LinkAddress");
+    if (StackInfo.cbStack == ~(KLDRSIZE)42)
+        return Failure("Bad StackInfo.cbStack");
+    if (StackInfo.cbStackThread == ~(KLDRSIZE)42)
+        return Failure("Bad StackInfo.cbStackThread");
+
+    /*
+     * Query entrypoint.
+     */
+    MainEPAddress = ~(KLDRADDR)42;
+    rc = kLdrModQueryMainEntrypoint(pMod, pvBits, MY_BASEADDRESS, &MainEPAddress);
+    if (rc)
+        return Failure("kLdrModQueryMainEntrypoint failed with rc=%d (%s)", rc, kErrName(rc));
+    printf("Entrypoint: %016" PRI_KLDRADDR "\n", MainEPAddress);
+    if (MainEPAddress == ~(KLDRADDR)42)
+        return Failure("MainEPAddress wasn't set.");
+    if (MainEPAddress != NIL_KLDRADDR && MainEPAddress < MY_BASEADDRESS)
+        return Failure("Bad MainEPAddress (a).");
+    if (MainEPAddress != NIL_KLDRADDR && MainEPAddress >= MY_BASEADDRESS + kLdrModSize(pMod))
+        return Failure("Bad MainEPAddress (b).");
+
+    /*
+     * Debugger information.
+     */
+    rc = kLdrModHasDbgInfo(pMod, pvBits);
+    if (!rc)
+        printf("Has Debugger Information\n");
+    else if (rc == KLDR_ERR_NO_DEBUG_INFO)
+        printf("NO Debugger Information\n");
+    else
+        return Failure("kLdrModHasDbgInfo failed with rc=%d (%s)", rc, kErrName(rc));
+    rc = kLdrModEnumDbgInfo(pMod, pvBits, BasicTestEnumDbgInfoCallback, NULL);
+    if (rc)
+        return Failure("kLdrModEnumDbgInfo failed with rc=%d (%s)", rc, kErrName(rc));
+
+
+    /*
+     * Negative symbol query tests.
+     */
+    fKind = 0;
+    Value = 0x0badc0de;
+    rc = kLdrModQuerySymbol(pMod, pvBits, MY_BASEADDRESS, NIL_KLDRMOD_SYM_ORDINAL - 20, NULL, 0, NULL, NULL, NULL,
+                            &Value, &fKind);
+    if (rc)
+    {
+        if (Value != 0)
+            return Failure("Value wasn't cleared on failure.");
+    }
+
+    fKind = 0;
+    Value = 0x0badc0de;
+    rc = kLdrModQuerySymbol(pMod, pvBits, MY_BASEADDRESS, NIL_KLDRMOD_SYM_ORDINAL, NULL, 0, NULL, NULL, NULL,
+                            &Value, &fKind);
+    if (!rc)
+        return Failure("NIL ordinal succeeded!");
+    if (Value != 0)
+        return Failure("Value wasn't cleared on failure.");
+
+    /*
+     * Enumerate and query all symbols.
+     */
+    printf("\n"
+           "Symbols:\n");
+    rc = kLdrModEnumSymbols(pMod, pvBits, MY_BASEADDRESS, 0, BasicTestsEnumSymCallback, pvBits);
+    if (rc)
+        return Failure("kLdrModEnumSymbols failed with rc=%d (%s)", rc, kErrName(rc));
+
+
+/*int     kLdrModCanExecuteOn(PKLDRMOD pMod, const void *pvBits, KCPUARCH enmArch, KCPU enmCpu);
+*/
+
+    return 0;
+}
+
+
+/**
+ * Performs the basic module loader test on the specified module
+ */
+static int BasicTestsSub(PKLDRMOD pMod)
+{
+    int         rc;
+    KU32        i;
+    void       *pvBits;
+    KSIZE       cbImage;
+
+    /*
+     * Check/dump the module structure.
+     */
+    printf("pMod=%p u32Magic=%#x cSegments=%d\n", (void *)pMod, pMod->u32Magic, pMod->cSegments);
+    printf("enmType=%d enmFmt=%d enmArch=%d enmCpu=%d enmEndian=%d\n",
+           pMod->enmType, pMod->enmFmt, pMod->enmArch, pMod->enmCpu, pMod->enmEndian);
+    printf("Filename: %s (%d bytes)\n", pMod->pszFilename, pMod->cchFilename);
+    printf("    Name: %s (%d bytes)\n", pMod->pszName, pMod->cchName);
+    printf("\n");
+
+    if (pMod->u32Magic != KLDRMOD_MAGIC)
+        return Failure("Bad u32Magic");
+    if (strlen(pMod->pszFilename) != pMod->cchFilename)
+        return Failure("Bad cchFilename");
+    if (strlen(pMod->pszName) != pMod->cchName)
+        return Failure("Bad cchName");
+    if (pMod->enmFmt >= KLDRFMT_END || pMod->enmFmt <= KLDRFMT_INVALID)
+        return Failure("Bad enmFmt");
+    if (pMod->enmType >= KLDRTYPE_END || pMod->enmType <= KLDRTYPE_INVALID)
+        return Failure("Bad enmType: %d", pMod->enmType);
+    if (!K_ARCH_IS_VALID(pMod->enmArch))
+        return Failure("Bad enmArch");
+    if (pMod->enmCpu >= KCPU_END || pMod->enmCpu <= KCPU_INVALID)
+        return Failure("Bad enmCpu");
+    if (pMod->enmEndian >= KLDRENDIAN_END || pMod->enmEndian <= KLDRENDIAN_INVALID)
+        return Failure("Bad enmEndian");
+
+    for (i = 0; i < pMod->cSegments; i++)
+    {
+        printf("seg #%d: pvUser=%p enmProt=%d Name: '%.*s' (%d bytes)\n",
+               i, pMod->aSegments[i].pvUser, pMod->aSegments[i].enmProt,
+               pMod->aSegments[i].cchName, pMod->aSegments[i].pchName, pMod->aSegments[i].cchName);
+        printf("LinkAddress: %016" PRI_KLDRADDR "       cb: %016" PRI_KLDRSIZE "  Alignment=%08" PRI_KLDRADDR " \n",
+               pMod->aSegments[i].LinkAddress, pMod->aSegments[i].cb, pMod->aSegments[i].Alignment);
+        printf("        RVA: %016" PRI_KLDRADDR " cbMapped: %016" PRI_KLDRSIZE " MapAddress=%p\n",
+               pMod->aSegments[i].RVA, (KLDRSIZE)pMod->aSegments[i].cbMapped, (void *)pMod->aSegments[i].MapAddress);
+        printf("    offFile: %016" PRI_KLDRADDR "   cbFile: %016" PRI_KLDRSIZE "\n",
+               (KLDRADDR)pMod->aSegments[i].offFile, (KLDRSIZE)pMod->aSegments[i].cbFile);
+        printf("\n");
+
+        if (pMod->aSegments[i].pvUser != NULL)
+            return Failure("Bad pvUser");
+        if (pMod->aSegments[i].enmProt >= KPROT_END || pMod->aSegments[i].enmProt <= KPROT_INVALID)
+            return Failure("Bad enmProt");
+        if (pMod->aSegments[i].MapAddress != 0)
+            return Failure("Bad MapAddress");
+        if (pMod->aSegments[i].cbMapped < pMod->aSegments[i].cb)
+            return Failure("Bad cbMapped (1)");
+        if (pMod->aSegments[i].cbMapped && !pMod->aSegments[i].Alignment)
+            return Failure("Bad cbMapped (2)");
+        if (pMod->aSegments[i].cbMapped > kLdrModSize(pMod))
+            return Failure("Bad cbMapped (3)");
+        if (    pMod->aSegments[i].Alignment
+            &&  (pMod->aSegments[i].RVA & (pMod->aSegments[i].Alignment - 1)))
+            return Failure("Bad RVA (1)");
+        if (pMod->aSegments[i].RVA != NIL_KLDRADDR && !pMod->aSegments[i].Alignment)
+            return Failure("Bad RVA (2)");
+        if (    pMod->aSegments[i].RVA != NIL_KLDRADDR
+            &&  pMod->aSegments[i].RVA >= kLdrModSize(pMod))
+            return Failure("Bad RVA (3)");
+        if (    pMod->aSegments[i].RVA != NIL_KLDRADDR
+            &&  pMod->aSegments[i].RVA + pMod->aSegments[i].cbMapped > kLdrModSize(pMod))
+            return Failure("Bad RVA/cbMapped (4)");
+        if (pMod->aSegments[i].LinkAddress != NIL_KLDRADDR && !pMod->aSegments[i].Alignment)
+            return Failure("Bad LinkAddress");
+        if (    pMod->aSegments[i].LinkAddress != NIL_KLDRADDR
+            &&  (pMod->aSegments[i].LinkAddress) & (pMod->aSegments[i].Alignment - 1))
+            return Failure("Bad LinkAddress alignment");
+        if (pMod->aSegments[i].offFile != -1 && pMod->aSegments[i].cbFile == -1)
+            return Failure("Bad offFile");
+        if (pMod->aSegments[i].offFile == -1 && pMod->aSegments[i].cbFile != -1)
+            return Failure("Bad cbFile");
+    }
+
+
+    /*
+     * Get image the size and query the image bits.
+     */
+    printf("* Testing user mapping...\n");
+
+    cbImage = (KSIZE)kLdrModSize(pMod);
+    if (cbImage != kLdrModSize(pMod))
+        return Failure("aborting test because the image is too huge!");
+    pvBits = malloc((KSIZE)cbImage);
+    if (!pvBits)
+        return Failure("failed to allocate %d bytes for the image", cbImage);
+
+    rc = kLdrModGetBits(pMod, pvBits, (KUPTR)pvBits, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("failed to get image bits, rc=%d (%s)", rc, kErrName(rc));
+
+    /*
+     * Another cleanup nesting.
+     */
+    rc = BasicTestsSub2(pMod, pvBits);
+    if (!rc)
+    {
+        /*
+         * Test relocating the bits in a few different ways before we're done with them.
+         */
+        void *pvBits2 = malloc((KSIZE)cbImage);
+        if (pvBits2)
+        {
+            rc = BasicTestsRelocate(pMod, pvBits, pvBits2);
+            free(pvBits2);
+        }
+        else
+            rc = Failure("failed to allocate %d bytes for the 2nd image", cbImage);
+    }
+
+    free(pvBits);
+    return rc;
+}
+
+
+/**
+ * Tests the mapping related api, after mapping.
+ */
+static int BasicTestsSubMap2(PKLDRMOD pMod)
+{
+    int rc;
+
+    rc = kLdrModFixupMapping(pMod, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("kLdrModFixupMapping (a) failed, rc=%d (%s)", rc, kErrName(rc));
+
+    rc = kLdrModReload(pMod);
+    if (rc)
+        return Failure("kLdrModReload (a) failed, rc=%d (%s)", rc, kErrName(rc));
+
+    rc = kLdrModReload(pMod);
+    if (rc)
+        return Failure("kLdrModReload (b) failed, rc=%d (%s)", rc, kErrName(rc));
+
+    rc = kLdrModFixupMapping(pMod, BasicTestsGetImport, NULL);
+    if (rc)
+        return Failure("kLdrModFixupMapping (b) failed, rc=%d (%s)", rc, kErrName(rc));
+
+    rc = kLdrModAllocTLS(pMod);
+    if (rc)
+        return Failure("kLdrModAllocTLS (a) failed, rc=%d (%s)", rc, kErrName(rc));
+    kLdrModFreeTLS(pMod);
+
+    rc = kLdrModAllocTLS(pMod);
+    if (rc)
+        return Failure("kLdrModAllocTLS (b) failed, rc=%d (%s)", rc, kErrName(rc));
+    kLdrModFreeTLS(pMod);
+
+    /*
+     * Repeat the BasicTestsSub2 with pvBits as NULL to test module
+     * interpreters that can utilize the mapping.
+     */
+    rc = BasicTestsSub2(pMod, NULL);
+    if (rc)
+        return Failure("BasicTestsSub2 in Map2 failed, rc=%d (%s)", rc, kErrName(rc));
+    return 0;
+}
+
+
+/**
+ * Tests the mapping related api.
+ */
+static int BasicTestsSubMap(PKLDRMOD pMod)
+{
+    int rc, rc2;
+    printf("* Mapping tests...\n");
+
+    rc = kLdrModMap(pMod);
+    if (rc)
+        return Failure("kLdrModMap failed, rc=%d (%s)", rc, kErrName(rc));
+    rc = BasicTestsSubMap2(pMod);
+    rc2 = kLdrModUnmap(pMod);
+    if (rc2)
+    {
+        Failure("kLdrModUnmap failed, rc=%d (%s)", rc2, kErrName(rc2));
+        rc = rc ? rc : rc2;
+    }
+
+    printf("* Mapping tests done.\n");
+    return rc;
+}
+
+
+/**
+ * Performs basic module loader tests on the specified file.
+ */
+static int BasicTests(const char *pszFilename)
+{
+    PKLDRMOD pMod;
+    int rc, rc2;
+
+    printf("tstLdrMod: Testing '%s'", pszFilename);
+    rc = kLdrModOpen(pszFilename, &pMod);
+    if (!rc)
+    {
+        rc = BasicTestsSub(pMod);
+        if (!rc)
+            rc = BasicTestsSubMap(pMod);
+        if (!rc)
+            rc = BasicTestsSub2(pMod, NULL);
+        rc2 = kLdrModClose(pMod);
+        if (rc2)
+            Failure("failed to close '%s', rc=%d (%s)", pszFilename, rc, kErrName(rc));
+        if (rc2 && !rc)
+            rc = rc2;
+    }
+    else
+        Failure("Failed to open '%s', rc=%d (%s)", pszFilename, rc, kErrName(rc));
+    return rc ? 1 : 0;
+}
+
+
+int main(int argc, char **argv)
+{
+    BasicTests(argv[argc-1]);
+
+    if (!g_cErrors)
+        printf("tstLdrMod: SUCCESS\n");
+    else
+        printf("tstLdrMod: FAILURE - %d errors\n", g_cErrors);
+    return !!g_cErrors;
+}
+
diff --git a/src/lib/kStuff/kProfiler2/Makefile.kmk b/src/lib/kStuff/kProfiler2/Makefile.kmk
new file mode 100644
index 0000000..b3650c9
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/Makefile.kmk
@@ -0,0 +1,237 @@
+# $Id: Makefile.kmk 29 2009-07-01 20:30:29Z bird $
+## @file
+# kProfiler Mark 2, sub-makefile.
+#
+
+#
+# Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+DEPTH ?= ..
+SUB_DEPTH = ..
+include $(PATH_KBUILD)/subheader.kmk
+
+#LIBRARIES  += kPrf2GC kPrf2R0
+DLLS       += kPrf2
+PROGRAMS   += kPrf2Read
+
+
+#
+# Our template.
+#
+TEMPLATE_kPrf2 = kProfiler Template
+if1of ($(BUILD_TARGET), win)
+TEMPLATE_kPrf2_EXTENDS = kStuff
+
+else # Eliminate these
+TEMPLATE_kPrf2_TOOL             = GCC3
+TEMPLATE_kPrf2_TOOL.os2         = GCC3OMF
+TEMPLATE_kPrf2_TOOL.win.x86     = VCC70
+TEMPLATE_kPrf2_TOOL.win.amd64   = VCC80AMD64
+TEMPLATE_kPrf2_ASTOOL           = YASM
+TEMPLATE_kPrf2_ASTOOL.os2       = NASM
+
+TEMPLATE_kPrf2_SDKS.win         = WINPSDK
+
+TEMPLATE_kPrf2_CXXFLAGS.freebsd = -g
+TEMPLATE_kPrf2_CXXFLAGS.linux   = -g
+TEMPLATE_kPrf2_CXXFLAGS.os2     = -g
+TEMPLATE_kPrf2_CXXFLAGS.win     = -Zi -Zl -W3 -GF -GR-
+TEMPLATE_kPrf2_CXXFLAGS.win.amd64 = -GS- #-FAcs
+ifneq ($(BUILD_TYPE),debug)
+TEMPLATE_kPrf2_CXXFLAGS.freebsd+= -O3
+TEMPLATE_kPrf2_CXXFLAGS.linux  += -O3
+TEMPLATE_kPrf2_CXXFLAGS.os2    += -O3
+TEMPLATE_kPrf2_CXXFLAGS.win    += -O2b2
+endif
+
+TEMPLATE_kPrf2_ASFLAGS.freebsd  = -f elf
+TEMPLATE_kPrf2_ASFLAGS.linux    = -f elf
+TEMPLATE_kPrf2_ASFLAGS.os2      = -f omf
+TEMPLATE_kPrf2_ASFLAGS.win.x86  = -f win32 -g cv8
+TEMPLATE_kPrf2_ASFLAGS.win.amd64 = -f win64 -g cv8
+
+TEMPLATE_kPrf2_INCS             = \
+	../include
+
+TEMPLATE_kPrf2_LDFLAGS.freebsd  = -g
+TEMPLATE_kPrf2_LDFLAGS.linux    = -g
+TEMPLATE_kPrf2_LDFLAGS.os2      = -g
+TEMPLATE_kPrf2_LDFLAGS.win      = /DEBUG
+
+TEMPLATE_kPrf2_LIBS.freebsd     =
+TEMPLATE_kPrf2_LIBS.linux       =
+TEMPLATE_kPrf2_LIBS.os2         =
+TEMPLATE_kPrf2_LIBS.win         = \
+	$(PATH_SDK_WINPSDK_LIB)/psapi.Lib
+TEMPLATE_kPrf2_LIBS.win.x86     = \
+	$(PATH_TOOL_VCC70_LIB)/libcmt.lib \
+	$(PATH_TOOL_VCC70_LIB)/oldnames.lib
+TEMPLATE_kPrf2_LIBS.win.amd64   = \
+	$(PATH_TOOL_VCC80AMD64_LIB)/oldnames.lib \
+	$(PATH_TOOL_VCC80AMD64_LIB)/libcmt.lib
+endif
+
+
+#
+# kPrf2 - The profiler module.
+#
+kPrf2_TEMPLATE      = kPrf2
+kPrf2_DEFS.x86      = KPRF_BITS=32
+kPrf2_DEFS.amd64    = KPRF_BITS=64
+kPrf2_LDFLAGS.win.amd64 = -Entry:DllMain
+
+kPrf2_SOURCES       = \
+	kProfileR3.cpp
+#	kProfileGC.cpp
+#	kProfileR0.cpp
+
+kPrf2_SOURCES.win = \
+	dllmain-win.cpp \
+	kPrf2WinApiWrapperHlp.c \
+	prf$(BUILD_TARGET_ARCH)msc.asm \
+	kPrf2-win-$(BUILD_TARGET_ARCH).def
+prfx86msc.asm_DEFS.win.x86 = \
+	KPRF_ENTER=_KPrfEnter \
+	KPRF_LEAVE=_KPrfLeave
+prfamd64msc.asm_DEFS.win.amd64 = \
+	KPRF_ENTER=KPrfEnter \
+	KPRF_LEAVE=KPrfLeave
+
+#
+# kPrf2Read - The read & producer of statistics.
+#
+kPrf2Read_TEMPLATE = kStuffEXE
+kPrf2Read_SOURCES  = \
+	kPrf2Read.cpp
+kPrf2Read_LIBS  = \
+	$(PATH_LIB)/kDbgStatic$(SUFF_LIB) \
+	$(PATH_LIB)/kRdrStatic$(SUFF_LIB) \
+	$(PATH_LIB)/kHlpCRTStatic$(SUFF_LIB)
+
+#
+# kPrf2WinApiWrappers
+#
+IMPORT_LIBS.win += kPrf2WinApiWrappersImp
+kPrf2WinApiWrappersImp_TEMPLATE = kStuffEXE
+kPrf2WinApiWrappersImp_SOURCES.x86   = kPrf2WinApiWrappersImp-x86.def
+kPrf2WinApiWrappersImp_SOURCES.amd64 = kPrf2WinApiWrappersImp-amd64.def
+
+DLLS.win += kPrf2WinApiWrappers
+kPrf2WinApiWrappers_TEMPLATE = kPrf2
+kPrf2WinApiWrappers_CFLAGS = -GH -Gh
+kPrf2WinApiWrappers_LDFLAGS.win.x86 = -Entry:DllMain@12
+kPrf2WinApiWrappers_LDFLAGS.win.amd64 = -Entry:DllMain
+kPrf2WinApiWrappers_SOURCES = \
+	kPrf2WinApiWrappers.c \
+	kPrf2WinApiWrappersImp-$(BUILD_TARGET_ARCH).def
+kPrf2WinApiWrappers_LIBS = \
+	$(PATH_kPrf2)/kPrf2.lib
+
+ifeq (0,1)
+kPrf2WinApiWrappers-kernel32.h:
+	$(SED) -f kPrf2WinApi-pre.sed --output $@.tmp \
+		$(PATH_SDK_WINPSDK_INC)/WinBase.h \
+		$(PATH_SDK_WINPSDK_INC)/WinCon.h \
+		$(PATH_SDK_WINPSDK_INC)/WinNLS.h \
+		$(PATH_SDK_WINPSDK_INC)/WinVer.h \
+		$(PATH_SDK_WINPSDK_INC)/WinNT.h \
+		$(PATH_SDK_WINPSDK_INC)/TlHelp32.h
+	$(APPEND) $@.tmp 'BOOL WINAPI ReplaceFile( LPCSTR lpReplacedFileName, LPCSTR lpReplacementFileName, LPCSTR lpBackupFileName, DWORD dwReplaceFlags, LPVOID lpExclude, LPVOID lpReserved );'
+	$(APPEND) $@.tmp 'BOOL WINAPI SetConsoleCursor( PVOID pvUnknown1, PVOID pvUnknown2 );'
+	$(APPEND) $@.tmp 'LPCH WINAPI GetEnvironmentStringsA( VOID );'
+	$(APPEND) $@.tmp 'BOOL WINAPI GetBinaryType( LPCSTR lpApplicationName, LPDWORD lpBinaryType );'
+	$(APPEND) $@.tmp 'WORD NTAPI RtlCaptureStackBackTrace( DWORD FramesToSkip, DWORD FramesToCapture, PVOID * BackTrace, PDWORD BackTraceHash );'
+	$(APPEND) $@.tmp 'PVOID RtlFillMemory( PVOID pv, int ch, SIZE_T cb );'
+	$(APPEND) $@.tmp 'PVOID RtlZeroMemory( PVOID pv, SIZE_T cb );'
+	$(APPEND) $@.tmp 'PVOID RtlMoveMemory( PVOID pvDst, PVOID pvSrc, SIZE_T cb );'
+	$(APPEND) $@.tmp 'VOID NTAPI RtlUnwind( PVOID TargetFrame, PVOID TargetIp, PEXCEPTION_RECORD ExceptionRecord, PVOID ReturnValue );'
+	$(APPEND) $@.tmp 'VOID NTAPI RtlUnwindEx( FRAME_POINTERS TargetFrame, PVOID TargetIp, PEXCEPTION_RECORD ExceptionRecord, PVOID ReturnValue, PCONTEXT ContextRecord, PUNWIND_HISTORY_TABLE HistoryTable );'
+	$(APPEND) $@.tmp 'ULONGLONG WINAPI RtlVirtualUnwind( ULONG HandlerType, ULONGLONG ImageBase, ULONGLONG ControlPC, PRUNTIME_FUNCTION FunctionEntry, PCONTEXT ContextRecord, PBOOLEAN InFunction, PFRAME_POINTERS EstablisherFrame, PKNONVOLATILE_CONTEXT_POINTERS ContextPointers );'
+	$(APPEND) $@.tmp 'PVOID WINAPI RtlPcToFileHeader( PVOID PcValue, PVOID * BaseOfImage );'
+	$(APPEND) $@.tmp 'PVOID WINAPI RtlLookupFunctionEntry( ULONGLONG ControlPC, PULONGLONG ImageBase, PULONGLONG TargetGp );'
+	$(APPEND) $@.tmp 'void WINAPI RtlRaiseException(PEXCEPTION_RECORD pXcpRec);'
+	$(APPEND) $@.tmp 'int WINAPI uaw_lstrcmpW( LPCUWSTR lpString1, LPCUWSTR lpString2 );'
+	$(APPEND) $@.tmp 'int WINAPI uaw_lstrcmpiW( LPCUWSTR lpString1, LPCUWSTR lpString2 );'
+	$(APPEND) $@.tmp 'int WINAPI uaw_lstrlenW( LPCUWSTR lpString );'
+	$(APPEND) $@.tmp 'LPUWSTR WINAPI uaw_wcschr( LPCUWSTR lpString, WCHAR wc );'
+	$(APPEND) $@.tmp 'LPUWSTR WINAPI uaw_wcscpy( LPUWSTR lpDst, LPCUWSTR lpSrc );'
+	$(APPEND) $@.tmp 'int WINAPI uaw_wcsicmp( LPCUWSTR lp1, LPCUWSTR lp2 );'
+	$(APPEND) $@.tmp 'SIZE_T WINAPI uaw_wcslen( LPCUWSTR lp1 );'
+	$(APPEND) $@.tmp 'LPUWSTR WINAPI uaw_wcsrchr( LPCUWSTR lpString, WCHAR wc );'
+	$(APPEND) $@.tmp 'LPSTR WINAPI lstrcat( LPSTR lpString1, LPCSTR lpString2 );'
+	$(APPEND) $@.tmp 'int WINAPI lstrcmp( LPCSTR lpString1, LPCSTR lpString2 );'
+	$(APPEND) $@.tmp 'int WINAPI lstrcmpi( LPCSTR lpString1, LPCSTR lpString2 );'
+	$(APPEND) $@.tmp 'LPSTR WINAPI lstrcpy( LPSTR lpString1, LPCSTR lpString2 );'
+	$(APPEND) $@.tmp 'LPSTR WINAPI lstrcpyn( LPSTR lpString1, LPCSTR lpString2, int iMaxLength );'
+	$(APPEND) $@.tmp 'int WINAPI lstrlen( LPCSTR lpString );'
+	$(SED) -f kPrf2WinApi-gencode.sed --output $@ $@.tmp
+	$(RM) -f $@.tmp
+
+kPrf2WinApiWrappersImp-$(KBUILD_TARGET_ARCH).def:
+	$(RM) -f $@
+	$(PATH_TOOL_$(TEMPLATE_kStuff_TOOL.win.$(BUILD_TARGET_ARCH))_BIN)/dumpbin.exe /EXPORTS /OUT:$@.tmp $(PATH_SDK_WINPSDK_LIB)/Kernel32.lib
+	$(SED) -f kPrf2WinApi-dumpbin.sed --output $@.tmp2 $@.tmp
+	$(APPEND) $@ 'LIBRARY kPrf2WinApiWrappers'
+	$(APPEND) $@ 'EXPORTS'
+	$(SED) -f kPrf2WinApi-genimp.sed --append $@ $@.tmp2
+	$(RM) -f $@.tmp $@.tmp2
+endif
+
+#
+# A simple testcase.
+#
+PROGRAMS.win.x86 += tst
+tst_TOOL = VCC70
+tst_SDKS = WINPSDK
+tst_CFLAGS = -GH -Gh -Zi -Zl -GR- -GX- -GF- -W3 -wd4244
+tst_SOURCES = tst.c
+tst.c_CFLAGS = -Od
+tst_LDFLAGS = /DEBUG
+tst_LIBS = \
+	$(PATH_TOOL_VCC70_LIB)/msvcrt.lib \
+	$(PATH_TOOL_VCC70_LIB)/msvcprt.lib \
+	$(PATH_TOOL_VCC70_LIB)/oldnames.lib \
+	$(PATH_kPrf2)/kPrf2.lib
+
+PROGRAMS += tstlongjmp
+tstlongjmp_TEMPLATE = kStuffEXE
+tstlongjmp_CFLAGS.win = -GH -Gh -Zi
+tstlongjmp_SOURCES = tstlongjmp.c
+tstlongjmp_LIBS = \
+	$(PATH_kPrf2)/kPrf2.lib
+
+# Generate the rules
+include $(PATH_KBUILD)/subfooter.kmk
+
+
+#
+# Aliases for .cpp.h files so we can more easily do syntax checking from the editor.
+#
+CORE := $(wildcard *core*.cpp.h *core*.h.h)
+$(CORE:.h=.o) $(CORE:.h=.obj) : kProfileR3.o
+
+READ := $(wildcard *read*.cpp.h *read*.h.h)
+$(READ:.h=.o) $(READ:.h=.obj) : kPrf2Read.o
+
diff --git a/src/lib/kStuff/kProfiler2/dllmain-win.cpp b/src/lib/kStuff/kProfiler2/dllmain-win.cpp
new file mode 100644
index 0000000..56928d9
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/dllmain-win.cpp
@@ -0,0 +1,75 @@
+/* $Id: dllmain-win.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kProfiler Mark 2 - The Windows DllMain for the profiler DLL.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <Windows.h>
+#include "kProfileR3.h"
+
+
+/**
+ * The DLL Main for the kPrf DLL.
+ *
+ * This is required because we need to initialize the profiler at some point
+ * and because we need to know when threads terminate. (We don't care about
+ * when threads get created, we simply pick them up when we see them the
+ * first time.)
+ *
+ * @returns Success indicator.
+ * @param   hInstDll        The instance handle of the DLL. (i.e. the module handle)
+ * @param   fdwReason       The reason why we're here. This is a 'flag' for reasons of
+ *                          tradition, it's really a kind of enum.
+ * @param   pReserved       Reserved / undocumented something.
+ */
+BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, PVOID pReserved)
+{
+    switch (fdwReason)
+    {
+        case DLL_PROCESS_ATTACH:
+            if (kPrfInitialize())
+                return FALSE;
+            break;
+
+        case DLL_PROCESS_DETACH:
+            kPrfTerminate();
+            break;
+
+        case DLL_THREAD_ATTACH:
+            break;
+
+        case DLL_THREAD_DETACH:
+            kPrfTerminateThread();
+            break;
+    }
+
+    return TRUE;
+}
+
diff --git a/src/lib/kStuff/kProfiler2/kPrf2-win-amd64.def b/src/lib/kStuff/kProfiler2/kPrf2-win-amd64.def
new file mode 100644
index 0000000..33bb8e2
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2-win-amd64.def
@@ -0,0 +1,37 @@
+; $Id: kPrf2-win-amd64.def 29 2009-07-01 20:30:29Z bird $LIBRARY kPrf2
+;; @file
+; kProfiler Mark 2 - Windows Linker Definition File, AMD64.
+;
+
+;
+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+;
+; Permission is hereby granted, free of charge, to any person
+; obtaining a copy of this software and associated documentation
+; files (the "Software"), to deal in the Software without
+; restriction, including without limitation the rights to use,
+; copy, modify, merge, publish, distribute, sublicense, and/or sell
+; copies of the Software, and to permit persons to whom the
+; Software is furnished to do so, subject to the following
+; conditions:
+;
+; The above copyright notice and this permission notice shall be
+; included in all copies or substantial portions of the Software.
+;
+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+; OTHER DEALINGS IN THE SOFTWARE.
+;
+
+LIBRARY kPrf2
+EXPORTS
+    _penter
+    _pexit
+    KPrfInit
+    kPrf2WrapResolve
+
diff --git a/src/lib/kStuff/kProfiler2/kPrf2-win-x86.def b/src/lib/kStuff/kProfiler2/kPrf2-win-x86.def
new file mode 100644
index 0000000..d486a09
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2-win-x86.def
@@ -0,0 +1,36 @@
+; $Id: kPrf2-win-x86.def 29 2009-07-01 20:30:29Z bird $
+;; @file
+; kProfiler Mark 2 - Windows Linker Definition File, x86.
+;
+
+;
+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+;
+; Permission is hereby granted, free of charge, to any person
+; obtaining a copy of this software and associated documentation
+; files (the "Software"), to deal in the Software without
+; restriction, including without limitation the rights to use,
+; copy, modify, merge, publish, distribute, sublicense, and/or sell
+; copies of the Software, and to permit persons to whom the
+; Software is furnished to do so, subject to the following
+; conditions:
+;
+; The above copyright notice and this permission notice shall be
+; included in all copies or substantial portions of the Software.
+;
+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+; OTHER DEALINGS IN THE SOFTWARE.
+;
+
+LIBRARY kPrf2
+EXPORTS
+    _penter
+    _pexit
+    KPrfInit
+    kPrf2WrapResolve
diff --git a/src/lib/kStuff/kProfiler2/kPrf2Read.cpp b/src/lib/kStuff/kProfiler2/kPrf2Read.cpp
new file mode 100644
index 0000000..5f24e4a
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2Read.cpp
@@ -0,0 +1,503 @@
+/* $Id: kPrf2Read.cpp 77 2016-06-22 17:03:55Z bird $ */
+/** @file
+ * kProfiler Mark 2 - The reader and producer of statistics.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <k/kDbg.h>
+
+
+/** @def KPRF_OFF2PTR
+ * Internal helper for converting a offset to a pointer.
+ * @internal
+ */
+#define KPRF_OFF2PTR(TypePrefix, TypeName, off, pHdr) \
+    ( (KPRF_TYPE(TypePrefix, TypeName)) ((off) + (KUPTR)pHdr) )
+
+/** @def KPRF_ALIGN
+ * The usual align macro.
+ * @internal
+ */
+#define KPRF_ALIGN(n, align) ( ((n) + ( (align) - 1)) & ~((align) - 1) )
+
+/** @def KPRF_OFFSETOF
+ * My usual extended offsetof macro, except this returns KU32 and mangles the type name.
+ * @internal
+ */
+#define KPRF_OFFSETOF(kPrfType, Member) ( (KU32)(KUPTR)&((KPRF_TYPE(P,kPrfType))0)->Member )
+
+/** @def PRF_SIZEOF
+ * Size of a kPrf type.
+ * @internal
+ */
+#define KPRF_SIZEOF(kPrfType)           sizeof(KPRF_TYPE(,kPrfType))
+
+#ifdef _MSC_VER
+# define KPRF_FMT_U64   "I64u"
+# define KPRF_FMT_X64   "I64x"
+# define KPRF_FMT_I64   "I64d"
+#else
+# define KPRF_FMT_X64   "llx"
+# define KPRF_FMT_U64   "llu"
+# define KPRF_FMT_I64   "lld"
+#endif
+
+
+/*
+ * Instantiate the readers.
+ */
+/* 32-bit */
+#define KPRF_NAME(Suffix)               KPrf32##Suffix
+#define KPRF_TYPE(Prefix,Suffix)        Prefix##KPRF32##Suffix
+#define KPRF_BITS                       32
+#define KPRF_FMT_UPTR                   "#010x"
+
+#include "prfcore.h.h"
+#include "prfreader.cpp.h"
+
+#undef KPRF_FMT_UPTR
+#undef KPRF_NAME
+#undef KPRF_TYPE
+#undef KPRF_BITS
+
+/* 64-bit */
+#define KPRF_NAME(Suffix)               KPrf64##Suffix
+#define KPRF_TYPE(Prefix,Suffix)        Prefix##KPRF64##Suffix
+#define KPRF_BITS                       64
+#ifdef _MSC_VER
+# define KPRF_FMT_UPTR                  "#018I64x"
+#else
+# define KPRF_FMT_UPTR                  "#018llx"
+#endif
+
+#include "prfcore.h.h"
+#include "prfreader.cpp.h"
+
+#undef KPRF_FMT_UPTR
+#undef KPRF_NAME
+#undef KPRF_TYPE
+#undef KPRF_BITS
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Header union type.
+ */
+typedef union KPRFHDR
+{
+    KPRF32HDR   Hdr32;
+    KPRF64HDR   Hdr64;
+} KPRFHDR;
+typedef KPRFHDR *PKPRFHDR;
+typedef const KPRFHDR *PCKPRFHDR;
+
+
+
+/**
+ * Read the data set into memory.
+ *
+ * @returns Pointer to the loaded data set. (release using free()).
+ *
+ * @param   pszFilename         The path to the profiler data set.
+ * @param   pcb                 Where to store the size of the data set.
+ * @param   pOut                Where to write errors.
+ */
+PKPRFHDR kPrfLoad(const char *pszFilename, KU32 *pcb, FILE *pOut)
+{
+    FILE *pFile = fopen(pszFilename, "rb");
+    if (!pFile)
+    {
+        fprintf(pOut, "Cannot open '%s' for reading!\n", pszFilename);
+        return NULL;
+    }
+
+    /*
+     * Read the file into memory.
+     */
+    long cbFile;
+    if (    !fseek(pFile, 0, SEEK_END)
+        &&  (cbFile = ftell(pFile)) >= 0
+        &&  !fseek(pFile, 0, SEEK_SET)
+        )
+    {
+        if (pcb)
+            *pcb = cbFile;
+
+        void *pvData = malloc(cbFile);
+        if (pvData)
+        {
+            if (fread(pvData, cbFile, 1, pFile))
+            {
+
+                fclose(pFile);
+                return (PKPRFHDR)pvData;
+            }
+            fprintf(pOut, "Failed reading '%s' into memory!\n", pszFilename);
+            free(pvData);
+        }
+        else
+            fprintf(pOut, "Failed to allocate %ld bytes of memory for reading the file '%s' into!\n", cbFile, pszFilename);
+    }
+    else
+        fprintf(pOut, "Failed to determin the size of '%s'!\n", pszFilename);
+
+    fclose(pFile);
+    return NULL;
+}
+
+
+/**
+ * Validates the data set
+ *
+ * @returns true if valid.
+ * @returns false if invalid.
+ *
+ * @param   pHdr        Pointer to the data set.
+ * @param   cb          The size of the data set.
+ * @param   pOut        Where to write error messages.
+ */
+static bool kPrfIsValidate(PCKPRFHDR pHdr, KU32 cb, FILE *pOut)
+{
+    /*
+     * We ASSUMES that the header is identicial with the exception
+     * of the uBasePtr size. (this is padded out and the upper bits are all zero)
+     */
+
+    if (    pHdr->Hdr32.u32Magic != KPRF32HDR_MAGIC
+        &&  pHdr->Hdr32.u32Magic != KPRF64HDR_MAGIC)
+    {
+        fprintf(pOut, "Invalid magic %#x\n", pHdr->Hdr32.u32Magic);
+        return false;
+    }
+
+    if (    pHdr->Hdr32.cFormatBits != 32
+        &&  pHdr->Hdr32.cFormatBits != 64)
+    {
+        fprintf(pOut, "Invalid/Unsupported bit count %u\n", pHdr->Hdr32.cFormatBits);
+        return false;
+    }
+
+    if (pHdr->Hdr32.cb > cb)
+    {
+        fprintf(pOut, "Data set size mismatch. Header say %#x, input is %#x\n", pHdr->Hdr32.cb, cb);
+        return false;
+    }
+
+#define KPRF_VALIDATE_SIZE(MemBaseName, cb32, cb64) do {\
+        if (pHdr->Hdr32.cb##MemBaseName > (pHdr->Hdr32.cFormatBits == 32 ? cb32 : cb64)) \
+        { \
+            fprintf(pOut, "cb" #MemBaseName " was expected to be %#x but is %#x. Probably a format change, rebuild.\n", \
+                    (unsigned)(pHdr->Hdr32.cFormatBits == 32 ? cb32 : cb64), pHdr->Hdr32.cb##MemBaseName); \
+            return false; \
+        }\
+    } while (0)
+
+    KPRF_VALIDATE_SIZE(Function, sizeof(KPRF32FUNC), sizeof(KPRF64FUNC));
+    KPRF_VALIDATE_SIZE(Thread, sizeof(KPRF32THREAD), sizeof(KPRF64THREAD));
+    KPRF_VALIDATE_SIZE(Stack,
+                       (KU32)&((PKPRF32STACK)0)->aFrames[pHdr->Hdr32.cMaxStackFrames],
+                       (KU32)&((PKPRF64STACK)0)->aFrames[pHdr->Hdr32.cMaxStackFrames]);
+
+    KUPTR cbHeader = (KUPTR)&pHdr->Hdr32.aiFunctions[pHdr->Hdr32.cFunctions] - (KUPTR)pHdr;
+    if (    cbHeader != (KU32)cbHeader
+        ||  cbHeader >= cb)
+    {
+        fprintf(pOut, "cFunctions (%#x) is too large to fit the lookup table inside the data set.\n",
+                pHdr->Hdr32.cFunctions);
+        return false;
+    }
+
+    /* The space assignment is hereby required to be equal to the member order in the header. */
+    KU32 offMin = cbHeader;
+#define KPRF_VALIDATE_OFF(off, name) do {\
+        if (    off > 0 \
+            &&  off < offMin) \
+        { \
+            fprintf(pOut, #name " (%#x) is overlapping with other element or invalid space assignment order.\n", off); \
+            return false; \
+        }\
+        if (off >= cb) \
+        { \
+            fprintf(pOut, #name " (%#x) is outside the data set (%#x)\n", off, cb); \
+            return false; \
+        }\
+    } while (0)
+#define KPRF_VALIDATE_MEM(MemBaseName) do {\
+        KPRF_VALIDATE_OFF(pHdr->Hdr32.off##MemBaseName##s, off##MemBaseName##s); \
+        if (    pHdr->Hdr32.off##MemBaseName##s \
+            &&  (   pHdr->Hdr32.off##MemBaseName##s + pHdr->Hdr32.cb##MemBaseName * pHdr->Hdr32.cMax##MemBaseName##s > cb \
+                 || pHdr->Hdr32.off##MemBaseName##s + pHdr->Hdr32.cb##MemBaseName * pHdr->Hdr32.cMax##MemBaseName##s < pHdr->Hdr32.off##MemBaseName##s)\
+           ) \
+        { \
+            fprintf(pOut, #MemBaseName " (%#x) is outside the data set (%#x)\n", \
+                    pHdr->Hdr32.off##MemBaseName##s + pHdr->Hdr32.cb##MemBaseName * pHdr->Hdr32.cMax##MemBaseName##s, cb); \
+            return false; \
+        }\
+        if (pHdr->Hdr32.c##MemBaseName##s > pHdr->Hdr32.cMax##MemBaseName##s) \
+        { \
+            fprintf(pOut, "c" #MemBaseName " (%#x) higher than the max (%#x)\n", \
+                    pHdr->Hdr32.c##MemBaseName##s, pHdr->Hdr32.cMax##MemBaseName##s); \
+            return false; \
+        } \
+        if (pHdr->Hdr32.off##MemBaseName##s) \
+            offMin += pHdr->Hdr32.cb##MemBaseName * pHdr->Hdr32.cMax##MemBaseName##s; \
+    } while (0)
+
+    KPRF_VALIDATE_MEM(Function);
+    KPRF_VALIDATE_OFF(pHdr->Hdr32.offModSegs, offModSegs);
+    if (pHdr->Hdr32.offModSegs)
+        KPRF_VALIDATE_OFF(pHdr->Hdr32.offModSegs + pHdr->Hdr32.cbMaxModSegs, cbMaxModSegs);
+    if (pHdr->Hdr32.cbModSegs > pHdr->Hdr32.cbMaxModSegs)
+    {
+        fprintf(pOut, "ccbModSegs (%#x) higher than the max (%#x)\n",
+                pHdr->Hdr32.cbModSegs, pHdr->Hdr32.cbMaxModSegs);
+        return false;
+    }
+    if (pHdr->Hdr32.offModSegs) \
+        offMin += pHdr->Hdr32.cbMaxModSegs; \
+    KPRF_VALIDATE_MEM(Thread);
+    KPRF_VALIDATE_MEM(Stack);
+    KPRF_VALIDATE_OFF(pHdr->Hdr32.offCommandLine, offCommandLine);
+    KPRF_VALIDATE_OFF(pHdr->Hdr32.offCommandLine + pHdr->Hdr32.cchCommandLine, cchCommandLine);
+
+    /*
+     * Validate the function lookup table
+     */
+    for (KU32 i = 0; i < pHdr->Hdr32.cFunctions; i++)
+        if (pHdr->Hdr32.aiFunctions[i] >= pHdr->Hdr32.cFunctions)
+        {
+            fprintf(pOut, "Function lookup entry %#x is invalid: index %#x, max is %#x\n",
+                    i, pHdr->Hdr32.aiFunctions[i], pHdr->Hdr32.cFunctions);
+            return false;
+        }
+
+    /*
+     * Validate the functions.
+     */
+    switch (pHdr->Hdr32.cFormatBits)
+    {
+        case 32:
+            return KPrf32IsValid(&pHdr->Hdr32, cb, pOut);
+
+        case 64:
+            return KPrf64IsValid(&pHdr->Hdr64, cb, pOut);
+    }
+    return false;
+#undef KPRF_VALIDATE_SIZE
+#undef KPRF_VALIDATE_MEM
+#undef KPRF_VALIDATE_OFF
+}
+
+
+/**
+ * Dumps a kProfiler 2 format file.
+ *
+ * @returns 0 on success.
+ * @returns -1 on failure.
+ *
+ * @param   pszFilename         The path to the profiler data set.
+ * @param   pOut                Where to write the output.
+ */
+int KPrfDumpFile(const char *pszFilename, FILE *pOut)
+{
+    /*
+     * Load and validate the data set.
+     */
+    KU32 cb;
+    PKPRFHDR pHdr = kPrfLoad(pszFilename, &cb, pOut);
+    if (!pHdr)
+        return -1;
+    if (!kPrfIsValidate(pHdr, cb, pOut))
+        return -1;
+
+    /*
+     * Switch to the appropirate dumper routine.
+     */
+    int rc;
+    switch (pHdr->Hdr32.cFormatBits)
+    {
+        case 32:
+            rc = KPrf32Dump(&pHdr->Hdr32, pOut);
+            break;
+
+        case 64:
+            rc = KPrf64Dump(&pHdr->Hdr64, pOut);
+            break;
+
+        default:
+            fprintf(stderr, "Unsupported bit count %d\n", pHdr->Hdr32.cFormatBits);
+            rc = -1;
+            break;
+    }
+
+    return rc;
+}
+
+
+/**
+ * Creates a HTML report from a kProfiler 2 format file.
+ *
+ * @returns 0 on success.
+ * @returns -1 on failure.
+ *
+ * @param   pszFilename         The path to the profiler data set.
+ * @param   pOut                Where to write the output.
+ */
+int KPrfHtmlReport(const char *pszFilename, FILE *pOut)
+{
+    /*
+     * Load and validate the data set.
+     */
+    KU32 cb;
+    PKPRFHDR pHdr = kPrfLoad(pszFilename, &cb, pOut);
+    if (!pHdr)
+        return -1;
+    if (!kPrfIsValidate(pHdr, cb, pOut))
+        return -1;
+
+    /*
+     * Switch to the appropirate dumper routine.
+     */
+    int rc;
+    switch (pHdr->Hdr32.cFormatBits)
+    {
+        case 32:
+        {
+            PKPRF32REPORT pReport;
+            rc = KPrf32Analyse(&pHdr->Hdr32, &pReport);
+            if (!rc)
+            {
+                rc = KPrf32WriteHtmlReport(pReport, pOut);
+                if (rc)
+                    fprintf(stderr, "Error while writing HTML report for '%s'\n", pszFilename);
+                KPrf32DeleteReport(pReport);
+            }
+            else
+                fprintf(stderr, "Analysis of '%s' failed!\n", pszFilename);
+            break;
+        }
+
+        case 64:
+        {
+            PKPRF64REPORT pReport;
+            rc = KPrf64Analyse(&pHdr->Hdr64, &pReport);
+            if (!rc)
+            {
+                rc = KPrf64WriteHtmlReport(pReport, pOut);
+                if (rc)
+                    fprintf(stderr, "Error while writing HTML report for '%s'\n", pszFilename);
+                KPrf64DeleteReport(pReport);
+            }
+            else
+                fprintf(stderr, "Analysis of '%s' failed!\n", pszFilename);
+            break;
+        }
+
+        default:
+            fprintf(stderr, "Unsupported bit count %d\n", pHdr->Hdr32.cFormatBits);
+            rc = -1;
+            break;
+    }
+
+    return rc;
+}
+
+
+
+/**
+ * Prints the usage.
+ */
+static int Usage(void)
+{
+    printf("kProfiler MK2 - Reader & Producer of Statistics\n"
+           "usage: kPrf2Read [-r|-d] <file1> [[-r|-d] file2 []]\n"
+           );
+    return 1;
+}
+
+
+int main(int argc, char **argv)
+{
+    /*
+     * Parse arguments.
+     */
+    if (argc <= 1)
+        return Usage();
+    enum { OP_DUMP, OP_HTML } enmOp = OP_DUMP;
+    for (int i = 1; i < argc; i++)
+    {
+        if (argv[i][0] == '-')
+        {
+            switch (argv[i][1])
+            {
+                case 'h':
+                case 'H':
+                case '?':
+                case '-':
+                    return Usage();
+
+                case 'd':
+                    enmOp = OP_DUMP;
+                    break;
+
+                case 'r':
+                    enmOp = OP_HTML;
+                    break;
+
+                default:
+                    printf("Syntax error: Unknown argument '%s'\n", argv[i]);
+                    return 1;
+            }
+        }
+        else
+        {
+            int rc;
+            switch (enmOp)
+            {
+                case OP_DUMP:
+                    rc = KPrfDumpFile(argv[i], stdout);
+                    break;
+                case OP_HTML:
+                    rc = KPrfHtmlReport(argv[i], stdout);
+                    break;
+            }
+            if (rc)
+                return rc;
+        }
+    }
+
+    return 0;
+}
diff --git a/src/lib/kStuff/kProfiler2/kPrf2WinApi-dumpbin.sed b/src/lib/kStuff/kProfiler2/kPrf2WinApi-dumpbin.sed
new file mode 100644
index 0000000..a9a44f2
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2WinApi-dumpbin.sed
@@ -0,0 +1,96 @@
+# $Id: kPrf2WinApi-dumpbin.sed 29 2009-07-01 20:30:29Z bird $
+## @file
+# Strip down dumpbin /export output.
+#
+
+#
+# Copyright (c) 2008 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+#
+# State switch
+#
+x
+/^exports$/b exports
+/^summary$/b summary
+b header
+
+#
+# Header
+#
+:header
+x
+/^[[:space:]][[:space:]]*ordinal[[:space:]]*name[[:space:]]*$/b switch_to_exports
+b drop_line
+
+#
+# Exports
+#
+:switch_to_exports
+s/^.*$/exports/
+h
+b drop_line
+
+:exports
+x
+/^[[:space:]][[:space:]]*Summary[[:space:]]*$/b switch_to_summary
+s/^[[:space:]]*//
+s/[[:space:]]*$//
+s/[[:space:]][[:space:]]*/ /g
+/^$/b drop_line
+
+# Filter out APIs that hasn't been implemented.
+/AddLocalAlternateComputerNameA/b drop_line
+/AddLocalAlternateComputerNameW/b drop_line
+/EnumerateLocalComputerNamesA/b drop_line
+/EnumerateLocalComputerNamesW/b drop_line
+/RemoveLocalAlternateComputerNameA/b drop_line
+/RemoveLocalAlternateComputerNameW/b drop_line
+/SetLocalPrimaryComputerNameA/b drop_line
+/SetLocalPrimaryComputerNameW/b drop_line
+/__C_specific_handler/b drop_line
+/__misaligned_access/b drop_line
+/_local_unwind/b drop_line
+
+b end
+
+#
+# Summary
+#
+:switch_to_summary
+s/^.*$/summary/
+h
+b drop_line
+
+:summary
+x
+b drop_line
+
+#
+# Tail
+#
+:drop_line
+d
+:end
+
diff --git a/src/lib/kStuff/kProfiler2/kPrf2WinApi-gencode.sed b/src/lib/kStuff/kProfiler2/kPrf2WinApi-gencode.sed
new file mode 100644
index 0000000..7d39edf
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2WinApi-gencode.sed
@@ -0,0 +1,120 @@
+# $Id: kPrf2WinApi-gencode.sed 29 2009-07-01 20:30:29Z bird $
+## @file
+# Generate code (for kernel32).
+#
+
+#
+# Copyright (c) 2008 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+# Example:
+#       BOOL WINAPI FindActCtxSectionGuid( DWORD dwFlags, const GUID * lpExtensionGuid, ULONG ulSectionId, const GUID * lpGuidToFind, PACTCTX_SECTION_KEYED_DATA ReturnedData );
+#
+# Should be turned into:
+#       typedef BOOL WINAPI FN_FindActCtxSectionGuid( DWORD dwFlags, const GUID * lpExtensionGuid, ULONG ulSectionId, const GUID * lpGuidToFind, PACTCTX_SECTION_KEYED_DATA ReturnedData );
+#       __declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindActCtxSectionGuid( DWORD dwFlags, const GUID * lpExtensionGuid, ULONG ulSectionId, const GUID * lpGuidToFind, PACTCTX_SECTION_KEYED_DATA ReturnedData )
+#       {
+#           static FN_FindActCtxSectionGuid *pfn = 0;
+#           if (!pfn)
+#               kPrfWrapResolve((void **)&pfn, "FindActCtxSectionGuid", &g_Kernel32);
+#           return pfn( dwFlags, lpExtensionGuid, ulSectionId, lpGuidToFind, ReturnedData );
+#       }
+#
+
+# Ignore empty lines.
+/^[[:space:]]*$/b delete
+
+# Some hacks.
+/([[:space:]]*VOID[[:space:]]*)/b no_hacking_void
+s/([[:space:]]*\([A-Z][A-Z0-9_]*\)[[:space:]]*)/( \1 a)/
+:no_hacking_void
+
+
+# Save the pattern space.
+h
+
+# Make the typedef.
+s/[[:space:]]\([A-Za-z_][A-Za-z0-9_]*\)(/ FN_\1(/
+s/^/typedef /
+p
+
+# Function definition
+g
+s/\n//g
+s/\r//g
+s/[[:space:]]\([A-Za-z_][A-Za-z0-9_]*\)(/ kPrf2Wrap_\1(/
+s/^/__declspec(dllexport) /
+s/;//
+p
+i\
+{
+
+#     static FN_FindActCtxSectionGuid *pfn = 0;
+#     if (!pfn)
+g
+s/^.*[[:space:]]\([A-Za-z_][A-Za-z0-9_]*\)(.*$/    static FN_\1 *pfn = 0;/
+p
+i\
+    if (!pfn)
+
+#       kPrfWrapResolve((void **)&pfn, "FindActCtxSectionGuid", &g_Kernel32);
+g
+s/^.*[[:space:]]\([A-Za-z_][A-Za-z0-9_]*\)(.*$/        kPrf2WrapResolve((void **)\&pfn, "\1\", \&g_Kernel32);/
+p
+
+#     The invocation and return statement.
+#     Some trouble here....
+g
+/^VOID WINAPI/b void_return
+/^void WINAPI/b void_return
+/^VOID __cdecl/b void_return
+/^void __cdecl/b void_return
+/^VOID NTAPI/b void_return
+/^void NTAPI/b void_return
+s/^.*(/    return pfn(/
+b morph_params
+
+:void_return
+s/^.*(/    pfn(/
+
+:morph_params
+s/ *\[\] *//
+s/ \*/ /g
+s/, *[a-zA-Z_][^,)]* \([a-zA-Z_][a-zA-Z_0-9]* *)\)/, \1/g
+s/( *[a-zA-Z_][^,)]* \([a-zA-Z_][a-zA-Z_0-9]* *[,)]\)/( \1/g
+s/, *[a-zA-Z_][^,)]* \([a-zA-Z_][a-zA-Z_0-9]* *,\)/, \1/g
+s/, *[a-zA-Z_][^,)]* \([a-zA-Z_][a-zA-Z_0-9]* *,\)/, \1/g
+s/, *[a-zA-Z_][^,)]* \([a-zA-Z_][a-zA-Z_0-9]* *,\)/, \1/g
+s/, *[a-zA-Z_][^,)]* \([a-zA-Z_][a-zA-Z_0-9]* *,\)/, \1/g
+s/( VOID )/ ()/
+s/( void )/ ()/
+p
+i\
+}
+i\
+
+# Done
+:delete
+d
+
diff --git a/src/lib/kStuff/kProfiler2/kPrf2WinApi-genimp.sed b/src/lib/kStuff/kProfiler2/kPrf2WinApi-genimp.sed
new file mode 100644
index 0000000..1473ed0
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2WinApi-genimp.sed
@@ -0,0 +1,55 @@
+# $Id: kPrf2WinApi-genimp.sed 29 2009-07-01 20:30:29Z bird $
+##
+# Generate imports from normalized dumpbin output.
+#
+
+#
+# Copyright (c) 2008 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+# Normalize the input a bit.
+s/[[:space:]][[:space:]]*/ /g
+s/^[[:space:]]//
+s/[[:space:]]$//
+/^$/b drop_line
+
+# Expects a single name - no ordinals yet.
+/\@/b have_at
+
+s/^\(.*\)$/  \1=kPrf2Wrap_\1/
+b end
+
+:have_at
+h
+s/^\([^ ]\)\(@[0-9]*\)$/  \1\2=kPrf2Wrap_\1/
+p
+g
+s/^\([^ ]\)\(@[0-9]*\)$/  \1=kPrf2Wrap_\1/
+b end
+
+:drop_line
+d
+b end
+
+:end
diff --git a/src/lib/kStuff/kProfiler2/kPrf2WinApi-pre.sed b/src/lib/kStuff/kProfiler2/kPrf2WinApi-pre.sed
new file mode 100644
index 0000000..de90156
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2WinApi-pre.sed
@@ -0,0 +1,117 @@
+# $Id: kPrf2WinApi-pre.sed 29 2009-07-01 20:30:29Z bird $
+## @file
+# This SED script will try normalize a windows header
+# in order to make it easy to pick out function prototypes.
+#
+
+#
+# Copyright (c) 2008 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+
+# Drop all preprocessor lines (#if/#else/#endif/#define/#undef/#pragma/comments)
+# (we don't bother with multi line comments ATM.)
+/^[[:space:]]*#/b drop_line
+/^[[:space:]]*\/\//b drop_line
+
+# Drop empty lines.
+/^[[:space:]]*$/b drop_line
+
+# Drop trailing comments and trailing whitespace
+s/[[:space:]][[:space:]]*\/\.*$//g
+s,[[:space:]][[:space:]]*/\*[^*/]*\*/[[:space:]]*$,,g
+s/[[:space:]][[:space:]]*$//g
+
+# Pick out the WINBASEAPI stuff (WinBase.h)
+/^WINBASEAPI/b winapi
+/^NTSYSAPI/b winapi
+/^WINAPI$/b winapi_perhaps
+/^APIENTRY$/b winapi_perhaps
+h
+d
+b end
+
+# No WINBASEAPI, so we'll have to carefully check the hold buffer.
+:winapi_perhaps
+x
+/^[A-Z][A-Z0-9_][A-Z0-9_]*[A-Z0-9]$/!b drop_line
+G
+s/\r/ /g
+s/\n/ /g
+b winapi
+
+# Make it one line and a bit standardized
+:winapi
+/;/b winapi_got_it
+N
+b winapi
+:winapi_got_it
+s/\n/ /g
+s/[[:space:]][[:space:]]*\/\*[^*/]*\*\/[[:space:]]*//g
+s/[[:space:]][[:space:]]*(/(/g
+s/)[[:space:]][[:space:]]*/)/g
+s/(\([^[:space:]]\)/( \1/g
+s/\([^[:space:]]\))/\1 )/g
+s/[*]\([^[:space:]]\)/* \1/g
+s/\([^[:space:]]\)[*]/\1 */g
+s/[[:space:]][[:space:]]*/ /g
+s/[[:space:]][[:space:]]*,/,/g
+s/,/, /g
+s/,[[:space:]][[:space:]]*/, /g
+
+# Drop the nasty bit of the sal.h / SpecString.h stuff.
+s/[[:space:]]__[a-z][a-z_]*([^()]*)[[:space:]]*/ /g
+s/[[:space:]]__out[a-z_]*[[:space:]]*/ /g
+s/[[:space:]]__in[a-z_]*[[:space:]]*/ /g
+s/[[:space:]]__deref[a-z_]*[[:space:]]*/ /g
+s/[[:space:]]__reserved[[:space:]]*/ /g
+s/[[:space:]]__nullnullterminated[[:space:]]*/ /g
+s/[[:space:]]__checkReturn[[:space:]]*/ /g
+
+# Drop some similar stuff.
+s/[[:space:]]OPTIONAL[[:space:]]/ /g
+s/[[:space:]]OPTIONAL,/ ,/g
+
+# The __declspec() bit isn't necessary
+s/WINBASEAPI *//
+s/NTSYSAPI *//
+s/DECLSPEC_NORETURN *//
+s/__declspec([^()]*) *//
+
+# Normalize spaces.
+s/[[:space:]]/ /g
+
+# Clear the hold space
+x
+s/^.*$//
+x
+b end
+
+:drop_line
+s/^.*$//
+h
+d
+
+:end
+
diff --git a/src/lib/kStuff/kProfiler2/kPrf2WinApiWrapperHlp.c b/src/lib/kStuff/kProfiler2/kPrf2WinApiWrapperHlp.c
new file mode 100644
index 0000000..0788cdf
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2WinApiWrapperHlp.c
@@ -0,0 +1,53 @@
+/* $Id: kPrf2WinApiWrapperHlp.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * Helpers for the Windows API wrapper DLL.
+ */
+
+/*
+ * Copyright (c) 2008 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <Windows.h>
+#include "kPRf2WinApiWRapperHlp.h"
+
+
+FARPROC kPrf2WrapResolve(void **ppfn, const char *pszName, PKPRF2WRAPDLL pDll)
+{
+    FARPROC pfn;
+    HMODULE hmod = pDll->hmod;
+    if (hmod == INVALID_HANDLE_VALUE)
+    {
+        hmod = LoadLibraryA(pDll->szName);
+        pDll->hmod = hmod;
+    }
+
+    pfn = GetProcAddress(hmod, pszName);
+    *ppfn = (void *)pfn;
+    return pfn;
+}
+
+
diff --git a/src/lib/kStuff/kProfiler2/kPrf2WinApiWrapperHlp.h b/src/lib/kStuff/kProfiler2/kPrf2WinApiWrapperHlp.h
new file mode 100644
index 0000000..b75d303
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2WinApiWrapperHlp.h
@@ -0,0 +1,41 @@
+/* $Id: kPrf2WinApiWrapperHlp.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * Helpers for the Windows API wrapper DLL.
+ */
+
+/*
+ * Copyright (c) 2008 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+typedef struct KPRF2WRAPDLL
+{
+    HMODULE hmod;
+    char szName[32];
+} KPRF2WRAPDLL;
+typedef KPRF2WRAPDLL *PKPRF2WRAPDLL;
+typedef KPRF2WRAPDLL const *PCKPRF2WRAPDLL;
+
+FARPROC kPrf2WrapResolve(void **ppfn, const char *pszName, PKPRF2WRAPDLL pDll);
+
+
diff --git a/src/lib/kStuff/kProfiler2/kPrf2WinApiWrappers-kernel32.h b/src/lib/kStuff/kProfiler2/kPrf2WinApiWrappers-kernel32.h
new file mode 100644
index 0000000..dde33cf
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2WinApiWrappers-kernel32.h
@@ -0,0 +1,9360 @@
+typedef PVOID WINAPI FN_EncodePointer( PVOID Ptr );
+__declspec(dllexport) PVOID WINAPI kPrf2Wrap_EncodePointer( PVOID Ptr )
+{
+    static FN_EncodePointer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EncodePointer", &g_Kernel32);
+    return pfn( Ptr );
+}
+
+typedef PVOID WINAPI FN_DecodePointer( PVOID Ptr );
+__declspec(dllexport) PVOID WINAPI kPrf2Wrap_DecodePointer( PVOID Ptr )
+{
+    static FN_DecodePointer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DecodePointer", &g_Kernel32);
+    return pfn( Ptr );
+}
+
+typedef PVOID WINAPI FN_EncodeSystemPointer( PVOID Ptr );
+__declspec(dllexport) PVOID WINAPI kPrf2Wrap_EncodeSystemPointer( PVOID Ptr )
+{
+    static FN_EncodeSystemPointer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EncodeSystemPointer", &g_Kernel32);
+    return pfn( Ptr );
+}
+
+typedef PVOID WINAPI FN_DecodeSystemPointer( PVOID Ptr );
+__declspec(dllexport) PVOID WINAPI kPrf2Wrap_DecodeSystemPointer( PVOID Ptr )
+{
+    static FN_DecodeSystemPointer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DecodeSystemPointer", &g_Kernel32);
+    return pfn( Ptr );
+}
+
+typedef DWORD WINAPI FN_GetFreeSpace( UINT a);
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetFreeSpace( UINT a)
+{
+    static FN_GetFreeSpace *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFreeSpace", &g_Kernel32);
+    return pfn( a);
+}
+
+typedef LONG WINAPI FN_InterlockedIncrement( LONG volatile * lpAddend );
+__declspec(dllexport) LONG WINAPI kPrf2Wrap_InterlockedIncrement( LONG volatile * lpAddend )
+{
+    static FN_InterlockedIncrement *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InterlockedIncrement", &g_Kernel32);
+    return pfn( lpAddend );
+}
+
+typedef LONG WINAPI FN_InterlockedDecrement( LONG volatile * lpAddend );
+__declspec(dllexport) LONG WINAPI kPrf2Wrap_InterlockedDecrement( LONG volatile * lpAddend )
+{
+    static FN_InterlockedDecrement *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InterlockedDecrement", &g_Kernel32);
+    return pfn( lpAddend );
+}
+
+typedef LONG WINAPI FN_InterlockedExchange( LONG volatile * Target, LONG Value );
+__declspec(dllexport) LONG WINAPI kPrf2Wrap_InterlockedExchange( LONG volatile * Target, LONG Value )
+{
+    static FN_InterlockedExchange *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InterlockedExchange", &g_Kernel32);
+    return pfn( Target, Value );
+}
+
+typedef LONG WINAPI FN_InterlockedExchangeAdd( LONG volatile * Addend, LONG Value );
+__declspec(dllexport) LONG WINAPI kPrf2Wrap_InterlockedExchangeAdd( LONG volatile * Addend, LONG Value )
+{
+    static FN_InterlockedExchangeAdd *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InterlockedExchangeAdd", &g_Kernel32);
+    return pfn( Addend, Value );
+}
+
+typedef LONG WINAPI FN_InterlockedCompareExchange( LONG volatile * Destination, LONG Exchange, LONG Comperand );
+__declspec(dllexport) LONG WINAPI kPrf2Wrap_InterlockedCompareExchange( LONG volatile * Destination, LONG Exchange, LONG Comperand )
+{
+    static FN_InterlockedCompareExchange *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InterlockedCompareExchange", &g_Kernel32);
+    return pfn( Destination, Exchange, Comperand );
+}
+
+typedef LONGLONG WINAPI FN_InterlockedCompareExchange64( LONGLONG volatile * Destination, LONGLONG Exchange, LONGLONG Comperand );
+__declspec(dllexport) LONGLONG WINAPI kPrf2Wrap_InterlockedCompareExchange64( LONGLONG volatile * Destination, LONGLONG Exchange, LONGLONG Comperand )
+{
+    static FN_InterlockedCompareExchange64 *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InterlockedCompareExchange64", &g_Kernel32);
+    return pfn( Destination, Exchange, Comperand );
+}
+
+typedef VOID WINAPI FN_InitializeSListHead( PSLIST_HEADER ListHead );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_InitializeSListHead( PSLIST_HEADER ListHead )
+{
+    static FN_InitializeSListHead *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InitializeSListHead", &g_Kernel32);
+    pfn( ListHead );
+}
+
+typedef PSLIST_ENTRY WINAPI FN_InterlockedPopEntrySList( PSLIST_HEADER ListHead );
+__declspec(dllexport) PSLIST_ENTRY WINAPI kPrf2Wrap_InterlockedPopEntrySList( PSLIST_HEADER ListHead )
+{
+    static FN_InterlockedPopEntrySList *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InterlockedPopEntrySList", &g_Kernel32);
+    return pfn( ListHead );
+}
+
+typedef PSLIST_ENTRY WINAPI FN_InterlockedPushEntrySList( PSLIST_HEADER ListHead, PSLIST_ENTRY ListEntry );
+__declspec(dllexport) PSLIST_ENTRY WINAPI kPrf2Wrap_InterlockedPushEntrySList( PSLIST_HEADER ListHead, PSLIST_ENTRY ListEntry )
+{
+    static FN_InterlockedPushEntrySList *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InterlockedPushEntrySList", &g_Kernel32);
+    return pfn( ListHead, ListEntry );
+}
+
+typedef PSLIST_ENTRY WINAPI FN_InterlockedFlushSList( PSLIST_HEADER ListHead );
+__declspec(dllexport) PSLIST_ENTRY WINAPI kPrf2Wrap_InterlockedFlushSList( PSLIST_HEADER ListHead )
+{
+    static FN_InterlockedFlushSList *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InterlockedFlushSList", &g_Kernel32);
+    return pfn( ListHead );
+}
+
+typedef USHORT WINAPI FN_QueryDepthSList( PSLIST_HEADER ListHead );
+__declspec(dllexport) USHORT WINAPI kPrf2Wrap_QueryDepthSList( PSLIST_HEADER ListHead )
+{
+    static FN_QueryDepthSList *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "QueryDepthSList", &g_Kernel32);
+    return pfn( ListHead );
+}
+
+typedef BOOL WINAPI FN_FreeResource( HGLOBAL hResData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FreeResource( HGLOBAL hResData )
+{
+    static FN_FreeResource *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FreeResource", &g_Kernel32);
+    return pfn( hResData );
+}
+
+typedef LPVOID WINAPI FN_LockResource( HGLOBAL hResData );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_LockResource( HGLOBAL hResData )
+{
+    static FN_LockResource *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LockResource", &g_Kernel32);
+    return pfn( hResData );
+}
+
+typedef BOOL WINAPI FN_FreeLibrary( HMODULE hLibModule );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FreeLibrary( HMODULE hLibModule )
+{
+    static FN_FreeLibrary *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FreeLibrary", &g_Kernel32);
+    return pfn( hLibModule );
+}
+
+typedef VOID WINAPI FN_FreeLibraryAndExitThread( HMODULE hLibModule, DWORD dwExitCode );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_FreeLibraryAndExitThread( HMODULE hLibModule, DWORD dwExitCode )
+{
+    static FN_FreeLibraryAndExitThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FreeLibraryAndExitThread", &g_Kernel32);
+    pfn( hLibModule, dwExitCode );
+}
+
+typedef BOOL WINAPI FN_DisableThreadLibraryCalls( HMODULE hLibModule );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DisableThreadLibraryCalls( HMODULE hLibModule )
+{
+    static FN_DisableThreadLibraryCalls *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DisableThreadLibraryCalls", &g_Kernel32);
+    return pfn( hLibModule );
+}
+
+typedef FARPROC WINAPI FN_GetProcAddress( HMODULE hModule, LPCSTR lpProcName );
+__declspec(dllexport) FARPROC WINAPI kPrf2Wrap_GetProcAddress( HMODULE hModule, LPCSTR lpProcName )
+{
+    static FN_GetProcAddress *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcAddress", &g_Kernel32);
+    return pfn( hModule, lpProcName );
+}
+
+typedef DWORD WINAPI FN_GetVersion( VOID );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetVersion( VOID )
+{
+    static FN_GetVersion *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetVersion", &g_Kernel32);
+    return pfn ();
+}
+
+typedef HGLOBAL WINAPI FN_GlobalAlloc( UINT uFlags, SIZE_T dwBytes );
+__declspec(dllexport) HGLOBAL WINAPI kPrf2Wrap_GlobalAlloc( UINT uFlags, SIZE_T dwBytes )
+{
+    static FN_GlobalAlloc *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalAlloc", &g_Kernel32);
+    return pfn( uFlags, dwBytes );
+}
+
+typedef HGLOBAL WINAPI FN_GlobalReAlloc( HGLOBAL hMem, SIZE_T dwBytes, UINT uFlags );
+__declspec(dllexport) HGLOBAL WINAPI kPrf2Wrap_GlobalReAlloc( HGLOBAL hMem, SIZE_T dwBytes, UINT uFlags )
+{
+    static FN_GlobalReAlloc *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalReAlloc", &g_Kernel32);
+    return pfn( hMem, dwBytes, uFlags );
+}
+
+typedef SIZE_T WINAPI FN_GlobalSize( HGLOBAL hMem );
+__declspec(dllexport) SIZE_T WINAPI kPrf2Wrap_GlobalSize( HGLOBAL hMem )
+{
+    static FN_GlobalSize *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalSize", &g_Kernel32);
+    return pfn( hMem );
+}
+
+typedef UINT WINAPI FN_GlobalFlags( HGLOBAL hMem );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GlobalFlags( HGLOBAL hMem )
+{
+    static FN_GlobalFlags *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalFlags", &g_Kernel32);
+    return pfn( hMem );
+}
+
+typedef LPVOID WINAPI FN_GlobalLock( HGLOBAL hMem );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_GlobalLock( HGLOBAL hMem )
+{
+    static FN_GlobalLock *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalLock", &g_Kernel32);
+    return pfn( hMem );
+}
+
+typedef HGLOBAL WINAPI FN_GlobalHandle( LPCVOID pMem );
+__declspec(dllexport) HGLOBAL WINAPI kPrf2Wrap_GlobalHandle( LPCVOID pMem )
+{
+    static FN_GlobalHandle *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalHandle", &g_Kernel32);
+    return pfn( pMem );
+}
+
+typedef BOOL WINAPI FN_GlobalUnlock( HGLOBAL hMem );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GlobalUnlock( HGLOBAL hMem )
+{
+    static FN_GlobalUnlock *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalUnlock", &g_Kernel32);
+    return pfn( hMem );
+}
+
+typedef HGLOBAL WINAPI FN_GlobalFree( HGLOBAL hMem );
+__declspec(dllexport) HGLOBAL WINAPI kPrf2Wrap_GlobalFree( HGLOBAL hMem )
+{
+    static FN_GlobalFree *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalFree", &g_Kernel32);
+    return pfn( hMem );
+}
+
+typedef SIZE_T WINAPI FN_GlobalCompact( DWORD dwMinFree );
+__declspec(dllexport) SIZE_T WINAPI kPrf2Wrap_GlobalCompact( DWORD dwMinFree )
+{
+    static FN_GlobalCompact *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalCompact", &g_Kernel32);
+    return pfn( dwMinFree );
+}
+
+typedef VOID WINAPI FN_GlobalFix( HGLOBAL hMem );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_GlobalFix( HGLOBAL hMem )
+{
+    static FN_GlobalFix *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalFix", &g_Kernel32);
+    pfn( hMem );
+}
+
+typedef VOID WINAPI FN_GlobalUnfix( HGLOBAL hMem );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_GlobalUnfix( HGLOBAL hMem )
+{
+    static FN_GlobalUnfix *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalUnfix", &g_Kernel32);
+    pfn( hMem );
+}
+
+typedef LPVOID WINAPI FN_GlobalWire( HGLOBAL hMem );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_GlobalWire( HGLOBAL hMem )
+{
+    static FN_GlobalWire *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalWire", &g_Kernel32);
+    return pfn( hMem );
+}
+
+typedef BOOL WINAPI FN_GlobalUnWire( HGLOBAL hMem );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GlobalUnWire( HGLOBAL hMem )
+{
+    static FN_GlobalUnWire *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalUnWire", &g_Kernel32);
+    return pfn( hMem );
+}
+
+typedef VOID WINAPI FN_GlobalMemoryStatus( LPMEMORYSTATUS lpBuffer );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_GlobalMemoryStatus( LPMEMORYSTATUS lpBuffer )
+{
+    static FN_GlobalMemoryStatus *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalMemoryStatus", &g_Kernel32);
+    pfn( lpBuffer );
+}
+
+typedef BOOL WINAPI FN_GlobalMemoryStatusEx( LPMEMORYSTATUSEX lpBuffer );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GlobalMemoryStatusEx( LPMEMORYSTATUSEX lpBuffer )
+{
+    static FN_GlobalMemoryStatusEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalMemoryStatusEx", &g_Kernel32);
+    return pfn( lpBuffer );
+}
+
+typedef HLOCAL WINAPI FN_LocalAlloc( UINT uFlags, SIZE_T uBytes );
+__declspec(dllexport) HLOCAL WINAPI kPrf2Wrap_LocalAlloc( UINT uFlags, SIZE_T uBytes )
+{
+    static FN_LocalAlloc *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LocalAlloc", &g_Kernel32);
+    return pfn( uFlags, uBytes );
+}
+
+typedef HLOCAL WINAPI FN_LocalReAlloc( HLOCAL hMem, SIZE_T uBytes, UINT uFlags );
+__declspec(dllexport) HLOCAL WINAPI kPrf2Wrap_LocalReAlloc( HLOCAL hMem, SIZE_T uBytes, UINT uFlags )
+{
+    static FN_LocalReAlloc *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LocalReAlloc", &g_Kernel32);
+    return pfn( hMem, uBytes, uFlags );
+}
+
+typedef LPVOID WINAPI FN_LocalLock( HLOCAL hMem );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_LocalLock( HLOCAL hMem )
+{
+    static FN_LocalLock *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LocalLock", &g_Kernel32);
+    return pfn( hMem );
+}
+
+typedef HLOCAL WINAPI FN_LocalHandle( LPCVOID pMem );
+__declspec(dllexport) HLOCAL WINAPI kPrf2Wrap_LocalHandle( LPCVOID pMem )
+{
+    static FN_LocalHandle *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LocalHandle", &g_Kernel32);
+    return pfn( pMem );
+}
+
+typedef BOOL WINAPI FN_LocalUnlock( HLOCAL hMem );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LocalUnlock( HLOCAL hMem )
+{
+    static FN_LocalUnlock *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LocalUnlock", &g_Kernel32);
+    return pfn( hMem );
+}
+
+typedef SIZE_T WINAPI FN_LocalSize( HLOCAL hMem );
+__declspec(dllexport) SIZE_T WINAPI kPrf2Wrap_LocalSize( HLOCAL hMem )
+{
+    static FN_LocalSize *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LocalSize", &g_Kernel32);
+    return pfn( hMem );
+}
+
+typedef UINT WINAPI FN_LocalFlags( HLOCAL hMem );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_LocalFlags( HLOCAL hMem )
+{
+    static FN_LocalFlags *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LocalFlags", &g_Kernel32);
+    return pfn( hMem );
+}
+
+typedef HLOCAL WINAPI FN_LocalFree( HLOCAL hMem );
+__declspec(dllexport) HLOCAL WINAPI kPrf2Wrap_LocalFree( HLOCAL hMem )
+{
+    static FN_LocalFree *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LocalFree", &g_Kernel32);
+    return pfn( hMem );
+}
+
+typedef SIZE_T WINAPI FN_LocalShrink( HLOCAL hMem, UINT cbNewSize );
+__declspec(dllexport) SIZE_T WINAPI kPrf2Wrap_LocalShrink( HLOCAL hMem, UINT cbNewSize )
+{
+    static FN_LocalShrink *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LocalShrink", &g_Kernel32);
+    return pfn( hMem, cbNewSize );
+}
+
+typedef SIZE_T WINAPI FN_LocalCompact( UINT uMinFree );
+__declspec(dllexport) SIZE_T WINAPI kPrf2Wrap_LocalCompact( UINT uMinFree )
+{
+    static FN_LocalCompact *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LocalCompact", &g_Kernel32);
+    return pfn( uMinFree );
+}
+
+typedef BOOL WINAPI FN_FlushInstructionCache( HANDLE hProcess, LPCVOID lpBaseAddress, SIZE_T dwSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FlushInstructionCache( HANDLE hProcess, LPCVOID lpBaseAddress, SIZE_T dwSize )
+{
+    static FN_FlushInstructionCache *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FlushInstructionCache", &g_Kernel32);
+    return pfn( hProcess, lpBaseAddress, dwSize );
+}
+
+typedef LPVOID WINAPI FN_VirtualAlloc( LPVOID lpAddress, SIZE_T dwSize, DWORD flAllocationType, DWORD flProtect );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_VirtualAlloc( LPVOID lpAddress, SIZE_T dwSize, DWORD flAllocationType, DWORD flProtect )
+{
+    static FN_VirtualAlloc *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VirtualAlloc", &g_Kernel32);
+    return pfn( lpAddress, dwSize, flAllocationType, flProtect );
+}
+
+typedef BOOL WINAPI FN_VirtualFree( LPVOID lpAddress, SIZE_T dwSize, DWORD dwFreeType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_VirtualFree( LPVOID lpAddress, SIZE_T dwSize, DWORD dwFreeType )
+{
+    static FN_VirtualFree *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VirtualFree", &g_Kernel32);
+    return pfn( lpAddress, dwSize, dwFreeType );
+}
+
+typedef BOOL WINAPI FN_VirtualProtect( LPVOID lpAddress, SIZE_T dwSize, DWORD flNewProtect, PDWORD lpflOldProtect );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_VirtualProtect( LPVOID lpAddress, SIZE_T dwSize, DWORD flNewProtect, PDWORD lpflOldProtect )
+{
+    static FN_VirtualProtect *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VirtualProtect", &g_Kernel32);
+    return pfn( lpAddress, dwSize, flNewProtect, lpflOldProtect );
+}
+
+typedef SIZE_T WINAPI FN_VirtualQuery( LPCVOID lpAddress, PMEMORY_BASIC_INFORMATION lpBuffer, SIZE_T dwLength );
+__declspec(dllexport) SIZE_T WINAPI kPrf2Wrap_VirtualQuery( LPCVOID lpAddress, PMEMORY_BASIC_INFORMATION lpBuffer, SIZE_T dwLength )
+{
+    static FN_VirtualQuery *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VirtualQuery", &g_Kernel32);
+    return pfn( lpAddress, lpBuffer, dwLength );
+}
+
+typedef LPVOID WINAPI FN_VirtualAllocEx( HANDLE hProcess, LPVOID lpAddress, SIZE_T dwSize, DWORD flAllocationType, DWORD flProtect );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_VirtualAllocEx( HANDLE hProcess, LPVOID lpAddress, SIZE_T dwSize, DWORD flAllocationType, DWORD flProtect )
+{
+    static FN_VirtualAllocEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VirtualAllocEx", &g_Kernel32);
+    return pfn( hProcess, lpAddress, dwSize, flAllocationType, flProtect );
+}
+
+typedef UINT WINAPI FN_GetWriteWatch( DWORD dwFlags, PVOID lpBaseAddress, SIZE_T dwRegionSize, PVOID * lpAddresses, ULONG_PTR * lpdwCount, PULONG lpdwGranularity );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetWriteWatch( DWORD dwFlags, PVOID lpBaseAddress, SIZE_T dwRegionSize, PVOID * lpAddresses, ULONG_PTR * lpdwCount, PULONG lpdwGranularity )
+{
+    static FN_GetWriteWatch *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetWriteWatch", &g_Kernel32);
+    return pfn( dwFlags, lpBaseAddress, dwRegionSize, lpAddresses, lpdwCount, lpdwGranularity );
+}
+
+typedef UINT WINAPI FN_ResetWriteWatch( LPVOID lpBaseAddress, SIZE_T dwRegionSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_ResetWriteWatch( LPVOID lpBaseAddress, SIZE_T dwRegionSize )
+{
+    static FN_ResetWriteWatch *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ResetWriteWatch", &g_Kernel32);
+    return pfn( lpBaseAddress, dwRegionSize );
+}
+
+typedef SIZE_T WINAPI FN_GetLargePageMinimum( VOID );
+__declspec(dllexport) SIZE_T WINAPI kPrf2Wrap_GetLargePageMinimum( VOID )
+{
+    static FN_GetLargePageMinimum *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLargePageMinimum", &g_Kernel32);
+    return pfn ();
+}
+
+typedef UINT WINAPI FN_EnumSystemFirmwareTables( DWORD FirmwareTableProviderSignature, PVOID pFirmwareTableEnumBuffer, DWORD BufferSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_EnumSystemFirmwareTables( DWORD FirmwareTableProviderSignature, PVOID pFirmwareTableEnumBuffer, DWORD BufferSize )
+{
+    static FN_EnumSystemFirmwareTables *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumSystemFirmwareTables", &g_Kernel32);
+    return pfn( FirmwareTableProviderSignature, pFirmwareTableEnumBuffer, BufferSize );
+}
+
+typedef UINT WINAPI FN_GetSystemFirmwareTable( DWORD FirmwareTableProviderSignature, DWORD FirmwareTableID, PVOID pFirmwareTableBuffer, DWORD BufferSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetSystemFirmwareTable( DWORD FirmwareTableProviderSignature, DWORD FirmwareTableID, PVOID pFirmwareTableBuffer, DWORD BufferSize )
+{
+    static FN_GetSystemFirmwareTable *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemFirmwareTable", &g_Kernel32);
+    return pfn( FirmwareTableProviderSignature, FirmwareTableID, pFirmwareTableBuffer, BufferSize );
+}
+
+typedef BOOL WINAPI FN_VirtualFreeEx( HANDLE hProcess, LPVOID lpAddress, SIZE_T dwSize, DWORD dwFreeType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_VirtualFreeEx( HANDLE hProcess, LPVOID lpAddress, SIZE_T dwSize, DWORD dwFreeType )
+{
+    static FN_VirtualFreeEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VirtualFreeEx", &g_Kernel32);
+    return pfn( hProcess, lpAddress, dwSize, dwFreeType );
+}
+
+typedef BOOL WINAPI FN_VirtualProtectEx( HANDLE hProcess, LPVOID lpAddress, SIZE_T dwSize, DWORD flNewProtect, PDWORD lpflOldProtect );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_VirtualProtectEx( HANDLE hProcess, LPVOID lpAddress, SIZE_T dwSize, DWORD flNewProtect, PDWORD lpflOldProtect )
+{
+    static FN_VirtualProtectEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VirtualProtectEx", &g_Kernel32);
+    return pfn( hProcess, lpAddress, dwSize, flNewProtect, lpflOldProtect );
+}
+
+typedef SIZE_T WINAPI FN_VirtualQueryEx( HANDLE hProcess, LPCVOID lpAddress, PMEMORY_BASIC_INFORMATION lpBuffer, SIZE_T dwLength );
+__declspec(dllexport) SIZE_T WINAPI kPrf2Wrap_VirtualQueryEx( HANDLE hProcess, LPCVOID lpAddress, PMEMORY_BASIC_INFORMATION lpBuffer, SIZE_T dwLength )
+{
+    static FN_VirtualQueryEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VirtualQueryEx", &g_Kernel32);
+    return pfn( hProcess, lpAddress, lpBuffer, dwLength );
+}
+
+typedef HANDLE WINAPI FN_HeapCreate( DWORD flOptions, SIZE_T dwInitialSize, SIZE_T dwMaximumSize );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_HeapCreate( DWORD flOptions, SIZE_T dwInitialSize, SIZE_T dwMaximumSize )
+{
+    static FN_HeapCreate *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapCreate", &g_Kernel32);
+    return pfn( flOptions, dwInitialSize, dwMaximumSize );
+}
+
+typedef BOOL WINAPI FN_HeapDestroy( HANDLE hHeap );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_HeapDestroy( HANDLE hHeap )
+{
+    static FN_HeapDestroy *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapDestroy", &g_Kernel32);
+    return pfn( hHeap );
+}
+
+typedef LPVOID WINAPI FN_HeapAlloc( HANDLE hHeap, DWORD dwFlags, SIZE_T dwBytes );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_HeapAlloc( HANDLE hHeap, DWORD dwFlags, SIZE_T dwBytes )
+{
+    static FN_HeapAlloc *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapAlloc", &g_Kernel32);
+    return pfn( hHeap, dwFlags, dwBytes );
+}
+
+typedef LPVOID WINAPI FN_HeapReAlloc( HANDLE hHeap, DWORD dwFlags, LPVOID lpMem, SIZE_T dwBytes );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_HeapReAlloc( HANDLE hHeap, DWORD dwFlags, LPVOID lpMem, SIZE_T dwBytes )
+{
+    static FN_HeapReAlloc *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapReAlloc", &g_Kernel32);
+    return pfn( hHeap, dwFlags, lpMem, dwBytes );
+}
+
+typedef BOOL WINAPI FN_HeapFree( HANDLE hHeap, DWORD dwFlags, LPVOID lpMem );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_HeapFree( HANDLE hHeap, DWORD dwFlags, LPVOID lpMem )
+{
+    static FN_HeapFree *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapFree", &g_Kernel32);
+    return pfn( hHeap, dwFlags, lpMem );
+}
+
+typedef SIZE_T WINAPI FN_HeapSize( HANDLE hHeap, DWORD dwFlags, LPCVOID lpMem );
+__declspec(dllexport) SIZE_T WINAPI kPrf2Wrap_HeapSize( HANDLE hHeap, DWORD dwFlags, LPCVOID lpMem )
+{
+    static FN_HeapSize *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapSize", &g_Kernel32);
+    return pfn( hHeap, dwFlags, lpMem );
+}
+
+typedef BOOL WINAPI FN_HeapValidate( HANDLE hHeap, DWORD dwFlags, LPCVOID lpMem );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_HeapValidate( HANDLE hHeap, DWORD dwFlags, LPCVOID lpMem )
+{
+    static FN_HeapValidate *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapValidate", &g_Kernel32);
+    return pfn( hHeap, dwFlags, lpMem );
+}
+
+typedef SIZE_T WINAPI FN_HeapCompact( HANDLE hHeap, DWORD dwFlags );
+__declspec(dllexport) SIZE_T WINAPI kPrf2Wrap_HeapCompact( HANDLE hHeap, DWORD dwFlags )
+{
+    static FN_HeapCompact *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapCompact", &g_Kernel32);
+    return pfn( hHeap, dwFlags );
+}
+
+typedef HANDLE WINAPI FN_GetProcessHeap( VOID );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_GetProcessHeap( VOID )
+{
+    static FN_GetProcessHeap *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessHeap", &g_Kernel32);
+    return pfn ();
+}
+
+typedef DWORD WINAPI FN_GetProcessHeaps( DWORD NumberOfHeaps, PHANDLE ProcessHeaps );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetProcessHeaps( DWORD NumberOfHeaps, PHANDLE ProcessHeaps )
+{
+    static FN_GetProcessHeaps *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessHeaps", &g_Kernel32);
+    return pfn( NumberOfHeaps, ProcessHeaps );
+}
+
+typedef BOOL WINAPI FN_HeapLock( HANDLE hHeap );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_HeapLock( HANDLE hHeap )
+{
+    static FN_HeapLock *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapLock", &g_Kernel32);
+    return pfn( hHeap );
+}
+
+typedef BOOL WINAPI FN_HeapUnlock( HANDLE hHeap );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_HeapUnlock( HANDLE hHeap )
+{
+    static FN_HeapUnlock *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapUnlock", &g_Kernel32);
+    return pfn( hHeap );
+}
+
+typedef BOOL WINAPI FN_HeapWalk( HANDLE hHeap, LPPROCESS_HEAP_ENTRY lpEntry );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_HeapWalk( HANDLE hHeap, LPPROCESS_HEAP_ENTRY lpEntry )
+{
+    static FN_HeapWalk *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapWalk", &g_Kernel32);
+    return pfn( hHeap, lpEntry );
+}
+
+typedef BOOL WINAPI FN_HeapSetInformation( HANDLE HeapHandle, HEAP_INFORMATION_CLASS HeapInformationClass, PVOID HeapInformation, SIZE_T HeapInformationLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_HeapSetInformation( HANDLE HeapHandle, HEAP_INFORMATION_CLASS HeapInformationClass, PVOID HeapInformation, SIZE_T HeapInformationLength )
+{
+    static FN_HeapSetInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapSetInformation", &g_Kernel32);
+    return pfn( HeapHandle, HeapInformationClass, HeapInformation, HeapInformationLength );
+}
+
+typedef BOOL WINAPI FN_HeapQueryInformation( HANDLE HeapHandle, HEAP_INFORMATION_CLASS HeapInformationClass, PVOID HeapInformation, SIZE_T HeapInformationLength, PSIZE_T ReturnLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_HeapQueryInformation( HANDLE HeapHandle, HEAP_INFORMATION_CLASS HeapInformationClass, PVOID HeapInformation, SIZE_T HeapInformationLength, PSIZE_T ReturnLength )
+{
+    static FN_HeapQueryInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "HeapQueryInformation", &g_Kernel32);
+    return pfn( HeapHandle, HeapInformationClass, HeapInformation, HeapInformationLength, ReturnLength );
+}
+
+typedef BOOL WINAPI FN_GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
+{
+    static FN_GetBinaryTypeA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetBinaryTypeA", &g_Kernel32);
+    return pfn( lpApplicationName, lpBinaryType );
+}
+
+typedef BOOL WINAPI FN_GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType )
+{
+    static FN_GetBinaryTypeW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetBinaryTypeW", &g_Kernel32);
+    return pfn( lpApplicationName, lpBinaryType );
+}
+
+typedef DWORD WINAPI FN_GetShortPathNameA( LPCSTR lpszLongPath, LPSTR lpszShortPath, DWORD cchBuffer );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetShortPathNameA( LPCSTR lpszLongPath, LPSTR lpszShortPath, DWORD cchBuffer )
+{
+    static FN_GetShortPathNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetShortPathNameA", &g_Kernel32);
+    return pfn( lpszLongPath, lpszShortPath, cchBuffer );
+}
+
+typedef DWORD WINAPI FN_GetShortPathNameW( LPCWSTR lpszLongPath, LPWSTR lpszShortPath, DWORD cchBuffer );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetShortPathNameW( LPCWSTR lpszLongPath, LPWSTR lpszShortPath, DWORD cchBuffer )
+{
+    static FN_GetShortPathNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetShortPathNameW", &g_Kernel32);
+    return pfn( lpszLongPath, lpszShortPath, cchBuffer );
+}
+
+typedef DWORD WINAPI FN_GetLongPathNameA( LPCSTR lpszShortPath, LPSTR lpszLongPath, DWORD cchBuffer );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetLongPathNameA( LPCSTR lpszShortPath, LPSTR lpszLongPath, DWORD cchBuffer )
+{
+    static FN_GetLongPathNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLongPathNameA", &g_Kernel32);
+    return pfn( lpszShortPath, lpszLongPath, cchBuffer );
+}
+
+typedef DWORD WINAPI FN_GetLongPathNameW( LPCWSTR lpszShortPath, LPWSTR lpszLongPath, DWORD cchBuffer );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetLongPathNameW( LPCWSTR lpszShortPath, LPWSTR lpszLongPath, DWORD cchBuffer )
+{
+    static FN_GetLongPathNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLongPathNameW", &g_Kernel32);
+    return pfn( lpszShortPath, lpszLongPath, cchBuffer );
+}
+
+typedef BOOL WINAPI FN_GetProcessAffinityMask( HANDLE hProcess, PDWORD_PTR lpProcessAffinityMask, PDWORD_PTR lpSystemAffinityMask );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetProcessAffinityMask( HANDLE hProcess, PDWORD_PTR lpProcessAffinityMask, PDWORD_PTR lpSystemAffinityMask )
+{
+    static FN_GetProcessAffinityMask *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessAffinityMask", &g_Kernel32);
+    return pfn( hProcess, lpProcessAffinityMask, lpSystemAffinityMask );
+}
+
+typedef BOOL WINAPI FN_SetProcessAffinityMask( HANDLE hProcess, DWORD_PTR dwProcessAffinityMask );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetProcessAffinityMask( HANDLE hProcess, DWORD_PTR dwProcessAffinityMask )
+{
+    static FN_SetProcessAffinityMask *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetProcessAffinityMask", &g_Kernel32);
+    return pfn( hProcess, dwProcessAffinityMask );
+}
+
+typedef BOOL WINAPI FN_GetProcessHandleCount( HANDLE hProcess, PDWORD pdwHandleCount );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetProcessHandleCount( HANDLE hProcess, PDWORD pdwHandleCount )
+{
+    static FN_GetProcessHandleCount *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessHandleCount", &g_Kernel32);
+    return pfn( hProcess, pdwHandleCount );
+}
+
+typedef BOOL WINAPI FN_GetProcessTimes( HANDLE hProcess, LPFILETIME lpCreationTime, LPFILETIME lpExitTime, LPFILETIME lpKernelTime, LPFILETIME lpUserTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetProcessTimes( HANDLE hProcess, LPFILETIME lpCreationTime, LPFILETIME lpExitTime, LPFILETIME lpKernelTime, LPFILETIME lpUserTime )
+{
+    static FN_GetProcessTimes *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessTimes", &g_Kernel32);
+    return pfn( hProcess, lpCreationTime, lpExitTime, lpKernelTime, lpUserTime );
+}
+
+typedef BOOL WINAPI FN_GetProcessIoCounters( HANDLE hProcess, PIO_COUNTERS lpIoCounters );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetProcessIoCounters( HANDLE hProcess, PIO_COUNTERS lpIoCounters )
+{
+    static FN_GetProcessIoCounters *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessIoCounters", &g_Kernel32);
+    return pfn( hProcess, lpIoCounters );
+}
+
+typedef BOOL WINAPI FN_GetProcessWorkingSetSize( HANDLE hProcess, PSIZE_T lpMinimumWorkingSetSize, PSIZE_T lpMaximumWorkingSetSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetProcessWorkingSetSize( HANDLE hProcess, PSIZE_T lpMinimumWorkingSetSize, PSIZE_T lpMaximumWorkingSetSize )
+{
+    static FN_GetProcessWorkingSetSize *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessWorkingSetSize", &g_Kernel32);
+    return pfn( hProcess, lpMinimumWorkingSetSize, lpMaximumWorkingSetSize );
+}
+
+typedef BOOL WINAPI FN_GetProcessWorkingSetSizeEx( HANDLE hProcess, PSIZE_T lpMinimumWorkingSetSize, PSIZE_T lpMaximumWorkingSetSize, PDWORD Flags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetProcessWorkingSetSizeEx( HANDLE hProcess, PSIZE_T lpMinimumWorkingSetSize, PSIZE_T lpMaximumWorkingSetSize, PDWORD Flags )
+{
+    static FN_GetProcessWorkingSetSizeEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessWorkingSetSizeEx", &g_Kernel32);
+    return pfn( hProcess, lpMinimumWorkingSetSize, lpMaximumWorkingSetSize, Flags );
+}
+
+typedef BOOL WINAPI FN_SetProcessWorkingSetSize( HANDLE hProcess, SIZE_T dwMinimumWorkingSetSize, SIZE_T dwMaximumWorkingSetSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetProcessWorkingSetSize( HANDLE hProcess, SIZE_T dwMinimumWorkingSetSize, SIZE_T dwMaximumWorkingSetSize )
+{
+    static FN_SetProcessWorkingSetSize *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetProcessWorkingSetSize", &g_Kernel32);
+    return pfn( hProcess, dwMinimumWorkingSetSize, dwMaximumWorkingSetSize );
+}
+
+typedef BOOL WINAPI FN_SetProcessWorkingSetSizeEx( HANDLE hProcess, SIZE_T dwMinimumWorkingSetSize, SIZE_T dwMaximumWorkingSetSize, DWORD Flags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetProcessWorkingSetSizeEx( HANDLE hProcess, SIZE_T dwMinimumWorkingSetSize, SIZE_T dwMaximumWorkingSetSize, DWORD Flags )
+{
+    static FN_SetProcessWorkingSetSizeEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetProcessWorkingSetSizeEx", &g_Kernel32);
+    return pfn( hProcess, dwMinimumWorkingSetSize, dwMaximumWorkingSetSize, Flags );
+}
+
+typedef HANDLE WINAPI FN_OpenProcess( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwProcessId );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenProcess( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwProcessId )
+{
+    static FN_OpenProcess *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenProcess", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, dwProcessId );
+}
+
+typedef HANDLE WINAPI FN_GetCurrentProcess( VOID );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_GetCurrentProcess( VOID )
+{
+    static FN_GetCurrentProcess *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrentProcess", &g_Kernel32);
+    return pfn ();
+}
+
+typedef DWORD WINAPI FN_GetCurrentProcessId( VOID );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetCurrentProcessId( VOID )
+{
+    static FN_GetCurrentProcessId *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrentProcessId", &g_Kernel32);
+    return pfn ();
+}
+
+typedef VOID WINAPI FN_ExitProcess( UINT uExitCode );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_ExitProcess( UINT uExitCode )
+{
+    static FN_ExitProcess *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ExitProcess", &g_Kernel32);
+    pfn( uExitCode );
+}
+
+typedef BOOL WINAPI FN_TerminateProcess( HANDLE hProcess, UINT uExitCode );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_TerminateProcess( HANDLE hProcess, UINT uExitCode )
+{
+    static FN_TerminateProcess *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "TerminateProcess", &g_Kernel32);
+    return pfn( hProcess, uExitCode );
+}
+
+typedef BOOL WINAPI FN_GetExitCodeProcess( HANDLE hProcess, LPDWORD lpExitCode );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetExitCodeProcess( HANDLE hProcess, LPDWORD lpExitCode )
+{
+    static FN_GetExitCodeProcess *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetExitCodeProcess", &g_Kernel32);
+    return pfn( hProcess, lpExitCode );
+}
+
+typedef VOID WINAPI FN_FatalExit( int ExitCode );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_FatalExit( int ExitCode )
+{
+    static FN_FatalExit *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FatalExit", &g_Kernel32);
+    pfn( ExitCode );
+}
+
+typedef LPCH WINAPI FN_GetEnvironmentStrings( VOID );
+__declspec(dllexport) LPCH WINAPI kPrf2Wrap_GetEnvironmentStrings( VOID )
+{
+    static FN_GetEnvironmentStrings *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetEnvironmentStrings", &g_Kernel32);
+    return pfn ();
+}
+
+typedef LPWCH WINAPI FN_GetEnvironmentStringsW( VOID );
+__declspec(dllexport) LPWCH WINAPI kPrf2Wrap_GetEnvironmentStringsW( VOID )
+{
+    static FN_GetEnvironmentStringsW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetEnvironmentStringsW", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_SetEnvironmentStringsA( LPCH NewEnvironment );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetEnvironmentStringsA( LPCH NewEnvironment )
+{
+    static FN_SetEnvironmentStringsA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetEnvironmentStringsA", &g_Kernel32);
+    return pfn( NewEnvironment );
+}
+
+typedef BOOL WINAPI FN_SetEnvironmentStringsW( LPWCH NewEnvironment );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetEnvironmentStringsW( LPWCH NewEnvironment )
+{
+    static FN_SetEnvironmentStringsW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetEnvironmentStringsW", &g_Kernel32);
+    return pfn( NewEnvironment );
+}
+
+typedef BOOL WINAPI FN_FreeEnvironmentStringsA( LPCH a);
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FreeEnvironmentStringsA( LPCH a)
+{
+    static FN_FreeEnvironmentStringsA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FreeEnvironmentStringsA", &g_Kernel32);
+    return pfn( a);
+}
+
+typedef BOOL WINAPI FN_FreeEnvironmentStringsW( LPWCH a);
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FreeEnvironmentStringsW( LPWCH a)
+{
+    static FN_FreeEnvironmentStringsW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FreeEnvironmentStringsW", &g_Kernel32);
+    return pfn( a);
+}
+
+typedef VOID WINAPI FN_RaiseException( DWORD dwExceptionCode, DWORD dwExceptionFlags, DWORD nNumberOfArguments, CONST ULONG_PTR * lpArguments );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_RaiseException( DWORD dwExceptionCode, DWORD dwExceptionFlags, DWORD nNumberOfArguments, CONST ULONG_PTR * lpArguments )
+{
+    static FN_RaiseException *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RaiseException", &g_Kernel32);
+    pfn( dwExceptionCode, dwExceptionFlags, nNumberOfArguments, lpArguments );
+}
+
+typedef LONG WINAPI FN_UnhandledExceptionFilter( struct _EXCEPTION_POINTERS * ExceptionInfo );
+__declspec(dllexport) LONG WINAPI kPrf2Wrap_UnhandledExceptionFilter( struct _EXCEPTION_POINTERS * ExceptionInfo )
+{
+    static FN_UnhandledExceptionFilter *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "UnhandledExceptionFilter", &g_Kernel32);
+    return pfn( ExceptionInfo );
+}
+
+typedef LPTOP_LEVEL_EXCEPTION_FILTER WINAPI FN_SetUnhandledExceptionFilter( LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter );
+__declspec(dllexport) LPTOP_LEVEL_EXCEPTION_FILTER WINAPI kPrf2Wrap_SetUnhandledExceptionFilter( LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter )
+{
+    static FN_SetUnhandledExceptionFilter *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetUnhandledExceptionFilter", &g_Kernel32);
+    return pfn( lpTopLevelExceptionFilter );
+}
+
+typedef LPVOID WINAPI FN_CreateFiber( SIZE_T dwStackSize, LPFIBER_START_ROUTINE lpStartAddress, LPVOID lpParameter );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_CreateFiber( SIZE_T dwStackSize, LPFIBER_START_ROUTINE lpStartAddress, LPVOID lpParameter )
+{
+    static FN_CreateFiber *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateFiber", &g_Kernel32);
+    return pfn( dwStackSize, lpStartAddress, lpParameter );
+}
+
+typedef LPVOID WINAPI FN_CreateFiberEx( SIZE_T dwStackCommitSize, SIZE_T dwStackReserveSize, DWORD dwFlags, LPFIBER_START_ROUTINE lpStartAddress, LPVOID lpParameter );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_CreateFiberEx( SIZE_T dwStackCommitSize, SIZE_T dwStackReserveSize, DWORD dwFlags, LPFIBER_START_ROUTINE lpStartAddress, LPVOID lpParameter )
+{
+    static FN_CreateFiberEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateFiberEx", &g_Kernel32);
+    return pfn( dwStackCommitSize, dwStackReserveSize, dwFlags, lpStartAddress, lpParameter );
+}
+
+typedef VOID WINAPI FN_DeleteFiber( LPVOID lpFiber );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_DeleteFiber( LPVOID lpFiber )
+{
+    static FN_DeleteFiber *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeleteFiber", &g_Kernel32);
+    pfn( lpFiber );
+}
+
+typedef LPVOID WINAPI FN_ConvertThreadToFiber( LPVOID lpParameter );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_ConvertThreadToFiber( LPVOID lpParameter )
+{
+    static FN_ConvertThreadToFiber *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ConvertThreadToFiber", &g_Kernel32);
+    return pfn( lpParameter );
+}
+
+typedef LPVOID WINAPI FN_ConvertThreadToFiberEx( LPVOID lpParameter, DWORD dwFlags );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_ConvertThreadToFiberEx( LPVOID lpParameter, DWORD dwFlags )
+{
+    static FN_ConvertThreadToFiberEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ConvertThreadToFiberEx", &g_Kernel32);
+    return pfn( lpParameter, dwFlags );
+}
+
+typedef BOOL WINAPI FN_ConvertFiberToThread( VOID );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ConvertFiberToThread( VOID )
+{
+    static FN_ConvertFiberToThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ConvertFiberToThread", &g_Kernel32);
+    return pfn ();
+}
+
+typedef VOID WINAPI FN_SwitchToFiber( LPVOID lpFiber );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_SwitchToFiber( LPVOID lpFiber )
+{
+    static FN_SwitchToFiber *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SwitchToFiber", &g_Kernel32);
+    pfn( lpFiber );
+}
+
+typedef BOOL WINAPI FN_SwitchToThread( VOID );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SwitchToThread( VOID )
+{
+    static FN_SwitchToThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SwitchToThread", &g_Kernel32);
+    return pfn ();
+}
+
+typedef HANDLE WINAPI FN_CreateThread( LPSECURITY_ATTRIBUTES lpThreadAttributes, SIZE_T dwStackSize, LPTHREAD_START_ROUTINE lpStartAddress, LPVOID lpParameter, DWORD dwCreationFlags, LPDWORD lpThreadId );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateThread( LPSECURITY_ATTRIBUTES lpThreadAttributes, SIZE_T dwStackSize, LPTHREAD_START_ROUTINE lpStartAddress, LPVOID lpParameter, DWORD dwCreationFlags, LPDWORD lpThreadId )
+{
+    static FN_CreateThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateThread", &g_Kernel32);
+    return pfn( lpThreadAttributes, dwStackSize, lpStartAddress, lpParameter, dwCreationFlags, lpThreadId );
+}
+
+typedef HANDLE WINAPI FN_CreateRemoteThread( HANDLE hProcess, LPSECURITY_ATTRIBUTES lpThreadAttributes, SIZE_T dwStackSize, LPTHREAD_START_ROUTINE lpStartAddress, LPVOID lpParameter, DWORD dwCreationFlags, LPDWORD lpThreadId );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateRemoteThread( HANDLE hProcess, LPSECURITY_ATTRIBUTES lpThreadAttributes, SIZE_T dwStackSize, LPTHREAD_START_ROUTINE lpStartAddress, LPVOID lpParameter, DWORD dwCreationFlags, LPDWORD lpThreadId )
+{
+    static FN_CreateRemoteThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateRemoteThread", &g_Kernel32);
+    return pfn( hProcess, lpThreadAttributes, dwStackSize, lpStartAddress, lpParameter, dwCreationFlags, lpThreadId );
+}
+
+typedef HANDLE WINAPI FN_GetCurrentThread( VOID );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_GetCurrentThread( VOID )
+{
+    static FN_GetCurrentThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrentThread", &g_Kernel32);
+    return pfn ();
+}
+
+typedef DWORD WINAPI FN_GetCurrentThreadId( VOID );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetCurrentThreadId( VOID )
+{
+    static FN_GetCurrentThreadId *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrentThreadId", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_SetThreadStackGuarantee( PULONG StackSizeInBytes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetThreadStackGuarantee( PULONG StackSizeInBytes )
+{
+    static FN_SetThreadStackGuarantee *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetThreadStackGuarantee", &g_Kernel32);
+    return pfn( StackSizeInBytes );
+}
+
+typedef DWORD WINAPI FN_GetProcessIdOfThread( HANDLE Thread );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetProcessIdOfThread( HANDLE Thread )
+{
+    static FN_GetProcessIdOfThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessIdOfThread", &g_Kernel32);
+    return pfn( Thread );
+}
+
+typedef DWORD WINAPI FN_GetThreadId( HANDLE Thread );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetThreadId( HANDLE Thread )
+{
+    static FN_GetThreadId *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetThreadId", &g_Kernel32);
+    return pfn( Thread );
+}
+
+typedef DWORD WINAPI FN_GetProcessId( HANDLE Process );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetProcessId( HANDLE Process )
+{
+    static FN_GetProcessId *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessId", &g_Kernel32);
+    return pfn( Process );
+}
+
+typedef DWORD WINAPI FN_GetCurrentProcessorNumber( VOID );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetCurrentProcessorNumber( VOID )
+{
+    static FN_GetCurrentProcessorNumber *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrentProcessorNumber", &g_Kernel32);
+    return pfn ();
+}
+
+typedef DWORD_PTR WINAPI FN_SetThreadAffinityMask( HANDLE hThread, DWORD_PTR dwThreadAffinityMask );
+__declspec(dllexport) DWORD_PTR WINAPI kPrf2Wrap_SetThreadAffinityMask( HANDLE hThread, DWORD_PTR dwThreadAffinityMask )
+{
+    static FN_SetThreadAffinityMask *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetThreadAffinityMask", &g_Kernel32);
+    return pfn( hThread, dwThreadAffinityMask );
+}
+
+typedef DWORD WINAPI FN_SetThreadIdealProcessor( HANDLE hThread, DWORD dwIdealProcessor );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_SetThreadIdealProcessor( HANDLE hThread, DWORD dwIdealProcessor )
+{
+    static FN_SetThreadIdealProcessor *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetThreadIdealProcessor", &g_Kernel32);
+    return pfn( hThread, dwIdealProcessor );
+}
+
+typedef BOOL WINAPI FN_SetProcessPriorityBoost( HANDLE hProcess, BOOL bDisablePriorityBoost );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetProcessPriorityBoost( HANDLE hProcess, BOOL bDisablePriorityBoost )
+{
+    static FN_SetProcessPriorityBoost *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetProcessPriorityBoost", &g_Kernel32);
+    return pfn( hProcess, bDisablePriorityBoost );
+}
+
+typedef BOOL WINAPI FN_GetProcessPriorityBoost( HANDLE hProcess, PBOOL pDisablePriorityBoost );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetProcessPriorityBoost( HANDLE hProcess, PBOOL pDisablePriorityBoost )
+{
+    static FN_GetProcessPriorityBoost *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessPriorityBoost", &g_Kernel32);
+    return pfn( hProcess, pDisablePriorityBoost );
+}
+
+typedef BOOL WINAPI FN_RequestWakeupLatency( LATENCY_TIME latency );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_RequestWakeupLatency( LATENCY_TIME latency )
+{
+    static FN_RequestWakeupLatency *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RequestWakeupLatency", &g_Kernel32);
+    return pfn( latency );
+}
+
+typedef BOOL WINAPI FN_IsSystemResumeAutomatic( VOID );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsSystemResumeAutomatic( VOID )
+{
+    static FN_IsSystemResumeAutomatic *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsSystemResumeAutomatic", &g_Kernel32);
+    return pfn ();
+}
+
+typedef HANDLE WINAPI FN_OpenThread( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenThread( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId )
+{
+    static FN_OpenThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenThread", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, dwThreadId );
+}
+
+typedef BOOL WINAPI FN_SetThreadPriority( HANDLE hThread, int nPriority );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetThreadPriority( HANDLE hThread, int nPriority )
+{
+    static FN_SetThreadPriority *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetThreadPriority", &g_Kernel32);
+    return pfn( hThread, nPriority );
+}
+
+typedef BOOL WINAPI FN_SetThreadPriorityBoost( HANDLE hThread, BOOL bDisablePriorityBoost );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetThreadPriorityBoost( HANDLE hThread, BOOL bDisablePriorityBoost )
+{
+    static FN_SetThreadPriorityBoost *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetThreadPriorityBoost", &g_Kernel32);
+    return pfn( hThread, bDisablePriorityBoost );
+}
+
+typedef BOOL WINAPI FN_GetThreadPriorityBoost( HANDLE hThread, PBOOL pDisablePriorityBoost );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetThreadPriorityBoost( HANDLE hThread, PBOOL pDisablePriorityBoost )
+{
+    static FN_GetThreadPriorityBoost *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetThreadPriorityBoost", &g_Kernel32);
+    return pfn( hThread, pDisablePriorityBoost );
+}
+
+typedef int WINAPI FN_GetThreadPriority( HANDLE hThread );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetThreadPriority( HANDLE hThread )
+{
+    static FN_GetThreadPriority *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetThreadPriority", &g_Kernel32);
+    return pfn( hThread );
+}
+
+typedef BOOL WINAPI FN_GetThreadTimes( HANDLE hThread, LPFILETIME lpCreationTime, LPFILETIME lpExitTime, LPFILETIME lpKernelTime, LPFILETIME lpUserTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetThreadTimes( HANDLE hThread, LPFILETIME lpCreationTime, LPFILETIME lpExitTime, LPFILETIME lpKernelTime, LPFILETIME lpUserTime )
+{
+    static FN_GetThreadTimes *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetThreadTimes", &g_Kernel32);
+    return pfn( hThread, lpCreationTime, lpExitTime, lpKernelTime, lpUserTime );
+}
+
+typedef BOOL WINAPI FN_GetThreadIOPendingFlag( HANDLE hThread, PBOOL lpIOIsPending );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetThreadIOPendingFlag( HANDLE hThread, PBOOL lpIOIsPending )
+{
+    static FN_GetThreadIOPendingFlag *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetThreadIOPendingFlag", &g_Kernel32);
+    return pfn( hThread, lpIOIsPending );
+}
+
+typedef VOID WINAPI FN_ExitThread( DWORD dwExitCode );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_ExitThread( DWORD dwExitCode )
+{
+    static FN_ExitThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ExitThread", &g_Kernel32);
+    pfn( dwExitCode );
+}
+
+typedef BOOL WINAPI FN_TerminateThread( HANDLE hThread, DWORD dwExitCode );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_TerminateThread( HANDLE hThread, DWORD dwExitCode )
+{
+    static FN_TerminateThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "TerminateThread", &g_Kernel32);
+    return pfn( hThread, dwExitCode );
+}
+
+typedef BOOL WINAPI FN_GetExitCodeThread( HANDLE hThread, LPDWORD lpExitCode );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetExitCodeThread( HANDLE hThread, LPDWORD lpExitCode )
+{
+    static FN_GetExitCodeThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetExitCodeThread", &g_Kernel32);
+    return pfn( hThread, lpExitCode );
+}
+
+typedef BOOL WINAPI FN_GetThreadSelectorEntry( HANDLE hThread, DWORD dwSelector, LPLDT_ENTRY lpSelectorEntry );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetThreadSelectorEntry( HANDLE hThread, DWORD dwSelector, LPLDT_ENTRY lpSelectorEntry )
+{
+    static FN_GetThreadSelectorEntry *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetThreadSelectorEntry", &g_Kernel32);
+    return pfn( hThread, dwSelector, lpSelectorEntry );
+}
+
+typedef EXECUTION_STATE WINAPI FN_SetThreadExecutionState( EXECUTION_STATE esFlags );
+__declspec(dllexport) EXECUTION_STATE WINAPI kPrf2Wrap_SetThreadExecutionState( EXECUTION_STATE esFlags )
+{
+    static FN_SetThreadExecutionState *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetThreadExecutionState", &g_Kernel32);
+    return pfn( esFlags );
+}
+
+typedef DWORD WINAPI FN_GetLastError( VOID );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetLastError( VOID )
+{
+    static FN_GetLastError *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLastError", &g_Kernel32);
+    return pfn ();
+}
+
+typedef VOID WINAPI FN_SetLastError( DWORD dwErrCode );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_SetLastError( DWORD dwErrCode )
+{
+    static FN_SetLastError *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetLastError", &g_Kernel32);
+    pfn( dwErrCode );
+}
+
+typedef VOID WINAPI FN_RestoreLastError( DWORD dwErrCode );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_RestoreLastError( DWORD dwErrCode )
+{
+    static FN_RestoreLastError *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RestoreLastError", &g_Kernel32);
+    pfn( dwErrCode );
+}
+
+typedef BOOL WINAPI FN_GetOverlappedResult( HANDLE hFile, LPOVERLAPPED lpOverlapped, LPDWORD lpNumberOfBytesTransferred, BOOL bWait );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetOverlappedResult( HANDLE hFile, LPOVERLAPPED lpOverlapped, LPDWORD lpNumberOfBytesTransferred, BOOL bWait )
+{
+    static FN_GetOverlappedResult *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetOverlappedResult", &g_Kernel32);
+    return pfn( hFile, lpOverlapped, lpNumberOfBytesTransferred, bWait );
+}
+
+typedef HANDLE WINAPI FN_CreateIoCompletionPort( HANDLE FileHandle, HANDLE ExistingCompletionPort, ULONG_PTR CompletionKey, DWORD NumberOfConcurrentThreads );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateIoCompletionPort( HANDLE FileHandle, HANDLE ExistingCompletionPort, ULONG_PTR CompletionKey, DWORD NumberOfConcurrentThreads )
+{
+    static FN_CreateIoCompletionPort *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateIoCompletionPort", &g_Kernel32);
+    return pfn( FileHandle, ExistingCompletionPort, CompletionKey, NumberOfConcurrentThreads );
+}
+
+typedef BOOL WINAPI FN_GetQueuedCompletionStatus( HANDLE CompletionPort, LPDWORD lpNumberOfBytesTransferred, PULONG_PTR lpCompletionKey, LPOVERLAPPED * lpOverlapped, DWORD dwMilliseconds );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetQueuedCompletionStatus( HANDLE CompletionPort, LPDWORD lpNumberOfBytesTransferred, PULONG_PTR lpCompletionKey, LPOVERLAPPED * lpOverlapped, DWORD dwMilliseconds )
+{
+    static FN_GetQueuedCompletionStatus *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetQueuedCompletionStatus", &g_Kernel32);
+    return pfn( CompletionPort, lpNumberOfBytesTransferred, lpCompletionKey, lpOverlapped, dwMilliseconds );
+}
+
+typedef BOOL WINAPI FN_PostQueuedCompletionStatus( HANDLE CompletionPort, DWORD dwNumberOfBytesTransferred, ULONG_PTR dwCompletionKey, LPOVERLAPPED lpOverlapped );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_PostQueuedCompletionStatus( HANDLE CompletionPort, DWORD dwNumberOfBytesTransferred, ULONG_PTR dwCompletionKey, LPOVERLAPPED lpOverlapped )
+{
+    static FN_PostQueuedCompletionStatus *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "PostQueuedCompletionStatus", &g_Kernel32);
+    return pfn( CompletionPort, dwNumberOfBytesTransferred, dwCompletionKey, lpOverlapped );
+}
+
+typedef UINT WINAPI FN_SetErrorMode( UINT uMode );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_SetErrorMode( UINT uMode )
+{
+    static FN_SetErrorMode *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetErrorMode", &g_Kernel32);
+    return pfn( uMode );
+}
+
+typedef BOOL WINAPI FN_ReadProcessMemory( HANDLE hProcess, LPCVOID lpBaseAddress, LPVOID lpBuffer, SIZE_T nSize, SIZE_T * lpNumberOfBytesRead );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadProcessMemory( HANDLE hProcess, LPCVOID lpBaseAddress, LPVOID lpBuffer, SIZE_T nSize, SIZE_T * lpNumberOfBytesRead )
+{
+    static FN_ReadProcessMemory *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadProcessMemory", &g_Kernel32);
+    return pfn( hProcess, lpBaseAddress, lpBuffer, nSize, lpNumberOfBytesRead );
+}
+
+typedef BOOL WINAPI FN_WriteProcessMemory( HANDLE hProcess, LPVOID lpBaseAddress, LPCVOID lpBuffer, SIZE_T nSize, SIZE_T * lpNumberOfBytesWritten );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteProcessMemory( HANDLE hProcess, LPVOID lpBaseAddress, LPCVOID lpBuffer, SIZE_T nSize, SIZE_T * lpNumberOfBytesWritten )
+{
+    static FN_WriteProcessMemory *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteProcessMemory", &g_Kernel32);
+    return pfn( hProcess, lpBaseAddress, lpBuffer, nSize, lpNumberOfBytesWritten );
+}
+
+typedef BOOL WINAPI FN_GetThreadContext( HANDLE hThread, LPCONTEXT lpContext );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetThreadContext( HANDLE hThread, LPCONTEXT lpContext )
+{
+    static FN_GetThreadContext *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetThreadContext", &g_Kernel32);
+    return pfn( hThread, lpContext );
+}
+
+typedef BOOL WINAPI FN_SetThreadContext( HANDLE hThread, CONST CONTEXT * lpContext );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetThreadContext( HANDLE hThread, CONST CONTEXT * lpContext )
+{
+    static FN_SetThreadContext *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetThreadContext", &g_Kernel32);
+    return pfn( hThread, lpContext );
+}
+
+typedef DWORD WINAPI FN_SuspendThread( HANDLE hThread );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_SuspendThread( HANDLE hThread )
+{
+    static FN_SuspendThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SuspendThread", &g_Kernel32);
+    return pfn( hThread );
+}
+
+typedef DWORD WINAPI FN_ResumeThread( HANDLE hThread );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_ResumeThread( HANDLE hThread )
+{
+    static FN_ResumeThread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ResumeThread", &g_Kernel32);
+    return pfn( hThread );
+}
+
+typedef DWORD WINAPI FN_QueueUserAPC( PAPCFUNC pfnAPC, HANDLE hThread, ULONG_PTR dwData );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_QueueUserAPC( PAPCFUNC pfnAPC, HANDLE hThread, ULONG_PTR dwData )
+{
+    static FN_QueueUserAPC *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "QueueUserAPC", &g_Kernel32);
+    return pfn( pfnAPC, hThread, dwData );
+}
+
+typedef BOOL WINAPI FN_IsDebuggerPresent( VOID );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsDebuggerPresent( VOID )
+{
+    static FN_IsDebuggerPresent *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsDebuggerPresent", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_CheckRemoteDebuggerPresent( HANDLE hProcess, PBOOL pbDebuggerPresent );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CheckRemoteDebuggerPresent( HANDLE hProcess, PBOOL pbDebuggerPresent )
+{
+    static FN_CheckRemoteDebuggerPresent *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CheckRemoteDebuggerPresent", &g_Kernel32);
+    return pfn( hProcess, pbDebuggerPresent );
+}
+
+typedef VOID WINAPI FN_DebugBreak( VOID );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_DebugBreak( VOID )
+{
+    static FN_DebugBreak *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DebugBreak", &g_Kernel32);
+    pfn ();
+}
+
+typedef BOOL WINAPI FN_WaitForDebugEvent( LPDEBUG_EVENT lpDebugEvent, DWORD dwMilliseconds );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WaitForDebugEvent( LPDEBUG_EVENT lpDebugEvent, DWORD dwMilliseconds )
+{
+    static FN_WaitForDebugEvent *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WaitForDebugEvent", &g_Kernel32);
+    return pfn( lpDebugEvent, dwMilliseconds );
+}
+
+typedef BOOL WINAPI FN_ContinueDebugEvent( DWORD dwProcessId, DWORD dwThreadId, DWORD dwContinueStatus );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ContinueDebugEvent( DWORD dwProcessId, DWORD dwThreadId, DWORD dwContinueStatus )
+{
+    static FN_ContinueDebugEvent *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ContinueDebugEvent", &g_Kernel32);
+    return pfn( dwProcessId, dwThreadId, dwContinueStatus );
+}
+
+typedef BOOL WINAPI FN_DebugActiveProcess( DWORD dwProcessId );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DebugActiveProcess( DWORD dwProcessId )
+{
+    static FN_DebugActiveProcess *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DebugActiveProcess", &g_Kernel32);
+    return pfn( dwProcessId );
+}
+
+typedef BOOL WINAPI FN_DebugActiveProcessStop( DWORD dwProcessId );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DebugActiveProcessStop( DWORD dwProcessId )
+{
+    static FN_DebugActiveProcessStop *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DebugActiveProcessStop", &g_Kernel32);
+    return pfn( dwProcessId );
+}
+
+typedef BOOL WINAPI FN_DebugSetProcessKillOnExit( BOOL KillOnExit );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DebugSetProcessKillOnExit( BOOL KillOnExit )
+{
+    static FN_DebugSetProcessKillOnExit *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DebugSetProcessKillOnExit", &g_Kernel32);
+    return pfn( KillOnExit );
+}
+
+typedef BOOL WINAPI FN_DebugBreakProcess( HANDLE Process );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DebugBreakProcess( HANDLE Process )
+{
+    static FN_DebugBreakProcess *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DebugBreakProcess", &g_Kernel32);
+    return pfn( Process );
+}
+
+typedef VOID WINAPI FN_InitializeCriticalSection( LPCRITICAL_SECTION lpCriticalSection );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_InitializeCriticalSection( LPCRITICAL_SECTION lpCriticalSection )
+{
+    static FN_InitializeCriticalSection *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InitializeCriticalSection", &g_Kernel32);
+    pfn( lpCriticalSection );
+}
+
+typedef VOID WINAPI FN_EnterCriticalSection( LPCRITICAL_SECTION lpCriticalSection );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_EnterCriticalSection( LPCRITICAL_SECTION lpCriticalSection )
+{
+    static FN_EnterCriticalSection *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnterCriticalSection", &g_Kernel32);
+    pfn( lpCriticalSection );
+}
+
+typedef VOID WINAPI FN_LeaveCriticalSection( LPCRITICAL_SECTION lpCriticalSection );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_LeaveCriticalSection( LPCRITICAL_SECTION lpCriticalSection )
+{
+    static FN_LeaveCriticalSection *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LeaveCriticalSection", &g_Kernel32);
+    pfn( lpCriticalSection );
+}
+
+typedef BOOL WINAPI FN_InitializeCriticalSectionAndSpinCount( LPCRITICAL_SECTION lpCriticalSection, DWORD dwSpinCount );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_InitializeCriticalSectionAndSpinCount( LPCRITICAL_SECTION lpCriticalSection, DWORD dwSpinCount )
+{
+    static FN_InitializeCriticalSectionAndSpinCount *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InitializeCriticalSectionAndSpinCount", &g_Kernel32);
+    return pfn( lpCriticalSection, dwSpinCount );
+}
+
+typedef DWORD WINAPI FN_SetCriticalSectionSpinCount( LPCRITICAL_SECTION lpCriticalSection, DWORD dwSpinCount );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_SetCriticalSectionSpinCount( LPCRITICAL_SECTION lpCriticalSection, DWORD dwSpinCount )
+{
+    static FN_SetCriticalSectionSpinCount *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetCriticalSectionSpinCount", &g_Kernel32);
+    return pfn( lpCriticalSection, dwSpinCount );
+}
+
+typedef BOOL WINAPI FN_TryEnterCriticalSection( LPCRITICAL_SECTION lpCriticalSection );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_TryEnterCriticalSection( LPCRITICAL_SECTION lpCriticalSection )
+{
+    static FN_TryEnterCriticalSection *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "TryEnterCriticalSection", &g_Kernel32);
+    return pfn( lpCriticalSection );
+}
+
+typedef VOID WINAPI FN_DeleteCriticalSection( LPCRITICAL_SECTION lpCriticalSection );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_DeleteCriticalSection( LPCRITICAL_SECTION lpCriticalSection )
+{
+    static FN_DeleteCriticalSection *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeleteCriticalSection", &g_Kernel32);
+    pfn( lpCriticalSection );
+}
+
+typedef BOOL WINAPI FN_SetEvent( HANDLE hEvent );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetEvent( HANDLE hEvent )
+{
+    static FN_SetEvent *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetEvent", &g_Kernel32);
+    return pfn( hEvent );
+}
+
+typedef BOOL WINAPI FN_ResetEvent( HANDLE hEvent );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ResetEvent( HANDLE hEvent )
+{
+    static FN_ResetEvent *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ResetEvent", &g_Kernel32);
+    return pfn( hEvent );
+}
+
+typedef BOOL WINAPI FN_PulseEvent( HANDLE hEvent );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_PulseEvent( HANDLE hEvent )
+{
+    static FN_PulseEvent *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "PulseEvent", &g_Kernel32);
+    return pfn( hEvent );
+}
+
+typedef BOOL WINAPI FN_ReleaseSemaphore( HANDLE hSemaphore, LONG lReleaseCount, LPLONG lpPreviousCount );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReleaseSemaphore( HANDLE hSemaphore, LONG lReleaseCount, LPLONG lpPreviousCount )
+{
+    static FN_ReleaseSemaphore *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReleaseSemaphore", &g_Kernel32);
+    return pfn( hSemaphore, lReleaseCount, lpPreviousCount );
+}
+
+typedef BOOL WINAPI FN_ReleaseMutex( HANDLE hMutex );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReleaseMutex( HANDLE hMutex )
+{
+    static FN_ReleaseMutex *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReleaseMutex", &g_Kernel32);
+    return pfn( hMutex );
+}
+
+typedef DWORD WINAPI FN_WaitForSingleObject( HANDLE hHandle, DWORD dwMilliseconds );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_WaitForSingleObject( HANDLE hHandle, DWORD dwMilliseconds )
+{
+    static FN_WaitForSingleObject *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WaitForSingleObject", &g_Kernel32);
+    return pfn( hHandle, dwMilliseconds );
+}
+
+typedef DWORD WINAPI FN_WaitForMultipleObjects( DWORD nCount, CONST HANDLE * lpHandles, BOOL bWaitAll, DWORD dwMilliseconds );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_WaitForMultipleObjects( DWORD nCount, CONST HANDLE * lpHandles, BOOL bWaitAll, DWORD dwMilliseconds )
+{
+    static FN_WaitForMultipleObjects *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WaitForMultipleObjects", &g_Kernel32);
+    return pfn( nCount, lpHandles, bWaitAll, dwMilliseconds );
+}
+
+typedef VOID WINAPI FN_Sleep( DWORD dwMilliseconds );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_Sleep( DWORD dwMilliseconds )
+{
+    static FN_Sleep *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Sleep", &g_Kernel32);
+    pfn( dwMilliseconds );
+}
+
+typedef HGLOBAL WINAPI FN_LoadResource( HMODULE hModule, HRSRC hResInfo );
+__declspec(dllexport) HGLOBAL WINAPI kPrf2Wrap_LoadResource( HMODULE hModule, HRSRC hResInfo )
+{
+    static FN_LoadResource *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LoadResource", &g_Kernel32);
+    return pfn( hModule, hResInfo );
+}
+
+typedef DWORD WINAPI FN_SizeofResource( HMODULE hModule, HRSRC hResInfo );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_SizeofResource( HMODULE hModule, HRSRC hResInfo )
+{
+    static FN_SizeofResource *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SizeofResource", &g_Kernel32);
+    return pfn( hModule, hResInfo );
+}
+
+typedef ATOM WINAPI FN_GlobalDeleteAtom( ATOM nAtom );
+__declspec(dllexport) ATOM WINAPI kPrf2Wrap_GlobalDeleteAtom( ATOM nAtom )
+{
+    static FN_GlobalDeleteAtom *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalDeleteAtom", &g_Kernel32);
+    return pfn( nAtom );
+}
+
+typedef BOOL WINAPI FN_InitAtomTable( DWORD nSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_InitAtomTable( DWORD nSize )
+{
+    static FN_InitAtomTable *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InitAtomTable", &g_Kernel32);
+    return pfn( nSize );
+}
+
+typedef ATOM WINAPI FN_DeleteAtom( ATOM nAtom );
+__declspec(dllexport) ATOM WINAPI kPrf2Wrap_DeleteAtom( ATOM nAtom )
+{
+    static FN_DeleteAtom *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeleteAtom", &g_Kernel32);
+    return pfn( nAtom );
+}
+
+typedef UINT WINAPI FN_SetHandleCount( UINT uNumber );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_SetHandleCount( UINT uNumber )
+{
+    static FN_SetHandleCount *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetHandleCount", &g_Kernel32);
+    return pfn( uNumber );
+}
+
+typedef DWORD WINAPI FN_GetLogicalDrives( VOID );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetLogicalDrives( VOID )
+{
+    static FN_GetLogicalDrives *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLogicalDrives", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_LockFile( HANDLE hFile, DWORD dwFileOffsetLow, DWORD dwFileOffsetHigh, DWORD nNumberOfBytesToLockLow, DWORD nNumberOfBytesToLockHigh );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LockFile( HANDLE hFile, DWORD dwFileOffsetLow, DWORD dwFileOffsetHigh, DWORD nNumberOfBytesToLockLow, DWORD nNumberOfBytesToLockHigh )
+{
+    static FN_LockFile *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LockFile", &g_Kernel32);
+    return pfn( hFile, dwFileOffsetLow, dwFileOffsetHigh, nNumberOfBytesToLockLow, nNumberOfBytesToLockHigh );
+}
+
+typedef BOOL WINAPI FN_UnlockFile( HANDLE hFile, DWORD dwFileOffsetLow, DWORD dwFileOffsetHigh, DWORD nNumberOfBytesToUnlockLow, DWORD nNumberOfBytesToUnlockHigh );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_UnlockFile( HANDLE hFile, DWORD dwFileOffsetLow, DWORD dwFileOffsetHigh, DWORD nNumberOfBytesToUnlockLow, DWORD nNumberOfBytesToUnlockHigh )
+{
+    static FN_UnlockFile *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "UnlockFile", &g_Kernel32);
+    return pfn( hFile, dwFileOffsetLow, dwFileOffsetHigh, nNumberOfBytesToUnlockLow, nNumberOfBytesToUnlockHigh );
+}
+
+typedef BOOL WINAPI FN_LockFileEx( HANDLE hFile, DWORD dwFlags, DWORD dwReserved, DWORD nNumberOfBytesToLockLow, DWORD nNumberOfBytesToLockHigh, LPOVERLAPPED lpOverlapped );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LockFileEx( HANDLE hFile, DWORD dwFlags, DWORD dwReserved, DWORD nNumberOfBytesToLockLow, DWORD nNumberOfBytesToLockHigh, LPOVERLAPPED lpOverlapped )
+{
+    static FN_LockFileEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LockFileEx", &g_Kernel32);
+    return pfn( hFile, dwFlags, dwReserved, nNumberOfBytesToLockLow, nNumberOfBytesToLockHigh, lpOverlapped );
+}
+
+typedef BOOL WINAPI FN_UnlockFileEx( HANDLE hFile, DWORD dwReserved, DWORD nNumberOfBytesToUnlockLow, DWORD nNumberOfBytesToUnlockHigh, LPOVERLAPPED lpOverlapped );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_UnlockFileEx( HANDLE hFile, DWORD dwReserved, DWORD nNumberOfBytesToUnlockLow, DWORD nNumberOfBytesToUnlockHigh, LPOVERLAPPED lpOverlapped )
+{
+    static FN_UnlockFileEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "UnlockFileEx", &g_Kernel32);
+    return pfn( hFile, dwReserved, nNumberOfBytesToUnlockLow, nNumberOfBytesToUnlockHigh, lpOverlapped );
+}
+
+typedef BOOL WINAPI FN_GetFileInformationByHandle( HANDLE hFile, LPBY_HANDLE_FILE_INFORMATION lpFileInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetFileInformationByHandle( HANDLE hFile, LPBY_HANDLE_FILE_INFORMATION lpFileInformation )
+{
+    static FN_GetFileInformationByHandle *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileInformationByHandle", &g_Kernel32);
+    return pfn( hFile, lpFileInformation );
+}
+
+typedef DWORD WINAPI FN_GetFileType( HANDLE hFile );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetFileType( HANDLE hFile )
+{
+    static FN_GetFileType *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileType", &g_Kernel32);
+    return pfn( hFile );
+}
+
+typedef DWORD WINAPI FN_GetFileSize( HANDLE hFile, LPDWORD lpFileSizeHigh );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetFileSize( HANDLE hFile, LPDWORD lpFileSizeHigh )
+{
+    static FN_GetFileSize *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileSize", &g_Kernel32);
+    return pfn( hFile, lpFileSizeHigh );
+}
+
+typedef BOOL WINAPI FN_GetFileSizeEx( HANDLE hFile, PLARGE_INTEGER lpFileSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetFileSizeEx( HANDLE hFile, PLARGE_INTEGER lpFileSize )
+{
+    static FN_GetFileSizeEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileSizeEx", &g_Kernel32);
+    return pfn( hFile, lpFileSize );
+}
+
+typedef HANDLE WINAPI FN_GetStdHandle( DWORD nStdHandle );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_GetStdHandle( DWORD nStdHandle )
+{
+    static FN_GetStdHandle *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetStdHandle", &g_Kernel32);
+    return pfn( nStdHandle );
+}
+
+typedef BOOL WINAPI FN_SetStdHandle( DWORD nStdHandle, HANDLE hHandle );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetStdHandle( DWORD nStdHandle, HANDLE hHandle )
+{
+    static FN_SetStdHandle *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetStdHandle", &g_Kernel32);
+    return pfn( nStdHandle, hHandle );
+}
+
+typedef BOOL WINAPI FN_WriteFile( HANDLE hFile, LPCVOID lpBuffer, DWORD nNumberOfBytesToWrite, LPDWORD lpNumberOfBytesWritten, LPOVERLAPPED lpOverlapped );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteFile( HANDLE hFile, LPCVOID lpBuffer, DWORD nNumberOfBytesToWrite, LPDWORD lpNumberOfBytesWritten, LPOVERLAPPED lpOverlapped )
+{
+    static FN_WriteFile *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteFile", &g_Kernel32);
+    return pfn( hFile, lpBuffer, nNumberOfBytesToWrite, lpNumberOfBytesWritten, lpOverlapped );
+}
+
+typedef BOOL WINAPI FN_ReadFile( HANDLE hFile, LPVOID lpBuffer, DWORD nNumberOfBytesToRead, LPDWORD lpNumberOfBytesRead, LPOVERLAPPED lpOverlapped );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadFile( HANDLE hFile, LPVOID lpBuffer, DWORD nNumberOfBytesToRead, LPDWORD lpNumberOfBytesRead, LPOVERLAPPED lpOverlapped )
+{
+    static FN_ReadFile *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadFile", &g_Kernel32);
+    return pfn( hFile, lpBuffer, nNumberOfBytesToRead, lpNumberOfBytesRead, lpOverlapped );
+}
+
+typedef BOOL WINAPI FN_FlushFileBuffers( HANDLE hFile );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FlushFileBuffers( HANDLE hFile )
+{
+    static FN_FlushFileBuffers *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FlushFileBuffers", &g_Kernel32);
+    return pfn( hFile );
+}
+
+typedef BOOL WINAPI FN_DeviceIoControl( HANDLE hDevice, DWORD dwIoControlCode, LPVOID lpInBuffer, DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize, LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DeviceIoControl( HANDLE hDevice, DWORD dwIoControlCode, LPVOID lpInBuffer, DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize, LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped )
+{
+    static FN_DeviceIoControl *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeviceIoControl", &g_Kernel32);
+    return pfn( hDevice, dwIoControlCode, lpInBuffer, nInBufferSize, lpOutBuffer, nOutBufferSize, lpBytesReturned, lpOverlapped );
+}
+
+typedef BOOL WINAPI FN_RequestDeviceWakeup( HANDLE hDevice );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_RequestDeviceWakeup( HANDLE hDevice )
+{
+    static FN_RequestDeviceWakeup *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RequestDeviceWakeup", &g_Kernel32);
+    return pfn( hDevice );
+}
+
+typedef BOOL WINAPI FN_CancelDeviceWakeupRequest( HANDLE hDevice );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CancelDeviceWakeupRequest( HANDLE hDevice )
+{
+    static FN_CancelDeviceWakeupRequest *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CancelDeviceWakeupRequest", &g_Kernel32);
+    return pfn( hDevice );
+}
+
+typedef BOOL WINAPI FN_GetDevicePowerState( HANDLE hDevice, BOOL * pfOn );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetDevicePowerState( HANDLE hDevice, BOOL * pfOn )
+{
+    static FN_GetDevicePowerState *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDevicePowerState", &g_Kernel32);
+    return pfn( hDevice, pfOn );
+}
+
+typedef BOOL WINAPI FN_SetMessageWaitingIndicator( HANDLE hMsgIndicator, ULONG ulMsgCount );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetMessageWaitingIndicator( HANDLE hMsgIndicator, ULONG ulMsgCount )
+{
+    static FN_SetMessageWaitingIndicator *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetMessageWaitingIndicator", &g_Kernel32);
+    return pfn( hMsgIndicator, ulMsgCount );
+}
+
+typedef BOOL WINAPI FN_SetEndOfFile( HANDLE hFile );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetEndOfFile( HANDLE hFile )
+{
+    static FN_SetEndOfFile *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetEndOfFile", &g_Kernel32);
+    return pfn( hFile );
+}
+
+typedef DWORD WINAPI FN_SetFilePointer( HANDLE hFile, LONG lDistanceToMove, PLONG lpDistanceToMoveHigh, DWORD dwMoveMethod );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_SetFilePointer( HANDLE hFile, LONG lDistanceToMove, PLONG lpDistanceToMoveHigh, DWORD dwMoveMethod )
+{
+    static FN_SetFilePointer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFilePointer", &g_Kernel32);
+    return pfn( hFile, lDistanceToMove, lpDistanceToMoveHigh, dwMoveMethod );
+}
+
+typedef BOOL WINAPI FN_SetFilePointerEx( HANDLE hFile, LARGE_INTEGER liDistanceToMove, PLARGE_INTEGER lpNewFilePointer, DWORD dwMoveMethod );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetFilePointerEx( HANDLE hFile, LARGE_INTEGER liDistanceToMove, PLARGE_INTEGER lpNewFilePointer, DWORD dwMoveMethod )
+{
+    static FN_SetFilePointerEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFilePointerEx", &g_Kernel32);
+    return pfn( hFile, liDistanceToMove, lpNewFilePointer, dwMoveMethod );
+}
+
+typedef BOOL WINAPI FN_FindClose( HANDLE hFindFile );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindClose( HANDLE hFindFile )
+{
+    static FN_FindClose *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindClose", &g_Kernel32);
+    return pfn( hFindFile );
+}
+
+typedef BOOL WINAPI FN_GetFileTime( HANDLE hFile, LPFILETIME lpCreationTime, LPFILETIME lpLastAccessTime, LPFILETIME lpLastWriteTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetFileTime( HANDLE hFile, LPFILETIME lpCreationTime, LPFILETIME lpLastAccessTime, LPFILETIME lpLastWriteTime )
+{
+    static FN_GetFileTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileTime", &g_Kernel32);
+    return pfn( hFile, lpCreationTime, lpLastAccessTime, lpLastWriteTime );
+}
+
+typedef BOOL WINAPI FN_SetFileTime( HANDLE hFile, CONST FILETIME * lpCreationTime, CONST FILETIME * lpLastAccessTime, CONST FILETIME * lpLastWriteTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetFileTime( HANDLE hFile, CONST FILETIME * lpCreationTime, CONST FILETIME * lpLastAccessTime, CONST FILETIME * lpLastWriteTime )
+{
+    static FN_SetFileTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFileTime", &g_Kernel32);
+    return pfn( hFile, lpCreationTime, lpLastAccessTime, lpLastWriteTime );
+}
+
+typedef BOOL WINAPI FN_SetFileValidData( HANDLE hFile, LONGLONG ValidDataLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetFileValidData( HANDLE hFile, LONGLONG ValidDataLength )
+{
+    static FN_SetFileValidData *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFileValidData", &g_Kernel32);
+    return pfn( hFile, ValidDataLength );
+}
+
+typedef BOOL WINAPI FN_SetFileShortNameA( HANDLE hFile, LPCSTR lpShortName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetFileShortNameA( HANDLE hFile, LPCSTR lpShortName )
+{
+    static FN_SetFileShortNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFileShortNameA", &g_Kernel32);
+    return pfn( hFile, lpShortName );
+}
+
+typedef BOOL WINAPI FN_SetFileShortNameW( HANDLE hFile, LPCWSTR lpShortName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetFileShortNameW( HANDLE hFile, LPCWSTR lpShortName )
+{
+    static FN_SetFileShortNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFileShortNameW", &g_Kernel32);
+    return pfn( hFile, lpShortName );
+}
+
+typedef BOOL WINAPI FN_CloseHandle( HANDLE hObject );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CloseHandle( HANDLE hObject )
+{
+    static FN_CloseHandle *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CloseHandle", &g_Kernel32);
+    return pfn( hObject );
+}
+
+typedef BOOL WINAPI FN_DuplicateHandle( HANDLE hSourceProcessHandle, HANDLE hSourceHandle, HANDLE hTargetProcessHandle, LPHANDLE lpTargetHandle, DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwOptions );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DuplicateHandle( HANDLE hSourceProcessHandle, HANDLE hSourceHandle, HANDLE hTargetProcessHandle, LPHANDLE lpTargetHandle, DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwOptions )
+{
+    static FN_DuplicateHandle *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DuplicateHandle", &g_Kernel32);
+    return pfn( hSourceProcessHandle, hSourceHandle, hTargetProcessHandle, lpTargetHandle, dwDesiredAccess, bInheritHandle, dwOptions );
+}
+
+typedef BOOL WINAPI FN_GetHandleInformation( HANDLE hObject, LPDWORD lpdwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetHandleInformation( HANDLE hObject, LPDWORD lpdwFlags )
+{
+    static FN_GetHandleInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetHandleInformation", &g_Kernel32);
+    return pfn( hObject, lpdwFlags );
+}
+
+typedef BOOL WINAPI FN_SetHandleInformation( HANDLE hObject, DWORD dwMask, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetHandleInformation( HANDLE hObject, DWORD dwMask, DWORD dwFlags )
+{
+    static FN_SetHandleInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetHandleInformation", &g_Kernel32);
+    return pfn( hObject, dwMask, dwFlags );
+}
+
+typedef DWORD WINAPI FN_LoadModule( LPCSTR lpModuleName, LPVOID lpParameterBlock );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_LoadModule( LPCSTR lpModuleName, LPVOID lpParameterBlock )
+{
+    static FN_LoadModule *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LoadModule", &g_Kernel32);
+    return pfn( lpModuleName, lpParameterBlock );
+}
+
+typedef UINT WINAPI FN_WinExec( LPCSTR lpCmdLine, UINT uCmdShow );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_WinExec( LPCSTR lpCmdLine, UINT uCmdShow )
+{
+    static FN_WinExec *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WinExec", &g_Kernel32);
+    return pfn( lpCmdLine, uCmdShow );
+}
+
+typedef BOOL WINAPI FN_ClearCommBreak( HANDLE hFile );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ClearCommBreak( HANDLE hFile )
+{
+    static FN_ClearCommBreak *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ClearCommBreak", &g_Kernel32);
+    return pfn( hFile );
+}
+
+typedef BOOL WINAPI FN_ClearCommError( HANDLE hFile, LPDWORD lpErrors, LPCOMSTAT lpStat );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ClearCommError( HANDLE hFile, LPDWORD lpErrors, LPCOMSTAT lpStat )
+{
+    static FN_ClearCommError *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ClearCommError", &g_Kernel32);
+    return pfn( hFile, lpErrors, lpStat );
+}
+
+typedef BOOL WINAPI FN_SetupComm( HANDLE hFile, DWORD dwInQueue, DWORD dwOutQueue );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetupComm( HANDLE hFile, DWORD dwInQueue, DWORD dwOutQueue )
+{
+    static FN_SetupComm *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetupComm", &g_Kernel32);
+    return pfn( hFile, dwInQueue, dwOutQueue );
+}
+
+typedef BOOL WINAPI FN_EscapeCommFunction( HANDLE hFile, DWORD dwFunc );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EscapeCommFunction( HANDLE hFile, DWORD dwFunc )
+{
+    static FN_EscapeCommFunction *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EscapeCommFunction", &g_Kernel32);
+    return pfn( hFile, dwFunc );
+}
+
+typedef BOOL WINAPI FN_GetCommConfig( HANDLE hCommDev, LPCOMMCONFIG lpCC, LPDWORD lpdwSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCommConfig( HANDLE hCommDev, LPCOMMCONFIG lpCC, LPDWORD lpdwSize )
+{
+    static FN_GetCommConfig *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCommConfig", &g_Kernel32);
+    return pfn( hCommDev, lpCC, lpdwSize );
+}
+
+typedef BOOL WINAPI FN_GetCommMask( HANDLE hFile, LPDWORD lpEvtMask );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCommMask( HANDLE hFile, LPDWORD lpEvtMask )
+{
+    static FN_GetCommMask *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCommMask", &g_Kernel32);
+    return pfn( hFile, lpEvtMask );
+}
+
+typedef BOOL WINAPI FN_GetCommProperties( HANDLE hFile, LPCOMMPROP lpCommProp );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCommProperties( HANDLE hFile, LPCOMMPROP lpCommProp )
+{
+    static FN_GetCommProperties *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCommProperties", &g_Kernel32);
+    return pfn( hFile, lpCommProp );
+}
+
+typedef BOOL WINAPI FN_GetCommModemStatus( HANDLE hFile, LPDWORD lpModemStat );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCommModemStatus( HANDLE hFile, LPDWORD lpModemStat )
+{
+    static FN_GetCommModemStatus *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCommModemStatus", &g_Kernel32);
+    return pfn( hFile, lpModemStat );
+}
+
+typedef BOOL WINAPI FN_GetCommState( HANDLE hFile, LPDCB lpDCB );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCommState( HANDLE hFile, LPDCB lpDCB )
+{
+    static FN_GetCommState *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCommState", &g_Kernel32);
+    return pfn( hFile, lpDCB );
+}
+
+typedef BOOL WINAPI FN_GetCommTimeouts( HANDLE hFile, LPCOMMTIMEOUTS lpCommTimeouts );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCommTimeouts( HANDLE hFile, LPCOMMTIMEOUTS lpCommTimeouts )
+{
+    static FN_GetCommTimeouts *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCommTimeouts", &g_Kernel32);
+    return pfn( hFile, lpCommTimeouts );
+}
+
+typedef BOOL WINAPI FN_PurgeComm( HANDLE hFile, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_PurgeComm( HANDLE hFile, DWORD dwFlags )
+{
+    static FN_PurgeComm *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "PurgeComm", &g_Kernel32);
+    return pfn( hFile, dwFlags );
+}
+
+typedef BOOL WINAPI FN_SetCommBreak( HANDLE hFile );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetCommBreak( HANDLE hFile )
+{
+    static FN_SetCommBreak *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetCommBreak", &g_Kernel32);
+    return pfn( hFile );
+}
+
+typedef BOOL WINAPI FN_SetCommConfig( HANDLE hCommDev, LPCOMMCONFIG lpCC, DWORD dwSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetCommConfig( HANDLE hCommDev, LPCOMMCONFIG lpCC, DWORD dwSize )
+{
+    static FN_SetCommConfig *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetCommConfig", &g_Kernel32);
+    return pfn( hCommDev, lpCC, dwSize );
+}
+
+typedef BOOL WINAPI FN_SetCommMask( HANDLE hFile, DWORD dwEvtMask );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetCommMask( HANDLE hFile, DWORD dwEvtMask )
+{
+    static FN_SetCommMask *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetCommMask", &g_Kernel32);
+    return pfn( hFile, dwEvtMask );
+}
+
+typedef BOOL WINAPI FN_SetCommState( HANDLE hFile, LPDCB lpDCB );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetCommState( HANDLE hFile, LPDCB lpDCB )
+{
+    static FN_SetCommState *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetCommState", &g_Kernel32);
+    return pfn( hFile, lpDCB );
+}
+
+typedef BOOL WINAPI FN_SetCommTimeouts( HANDLE hFile, LPCOMMTIMEOUTS lpCommTimeouts );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetCommTimeouts( HANDLE hFile, LPCOMMTIMEOUTS lpCommTimeouts )
+{
+    static FN_SetCommTimeouts *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetCommTimeouts", &g_Kernel32);
+    return pfn( hFile, lpCommTimeouts );
+}
+
+typedef BOOL WINAPI FN_TransmitCommChar( HANDLE hFile, char cChar );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_TransmitCommChar( HANDLE hFile, char cChar )
+{
+    static FN_TransmitCommChar *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "TransmitCommChar", &g_Kernel32);
+    return pfn( hFile, cChar );
+}
+
+typedef BOOL WINAPI FN_WaitCommEvent( HANDLE hFile, LPDWORD lpEvtMask, LPOVERLAPPED lpOverlapped );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WaitCommEvent( HANDLE hFile, LPDWORD lpEvtMask, LPOVERLAPPED lpOverlapped )
+{
+    static FN_WaitCommEvent *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WaitCommEvent", &g_Kernel32);
+    return pfn( hFile, lpEvtMask, lpOverlapped );
+}
+
+typedef DWORD WINAPI FN_SetTapePosition( HANDLE hDevice, DWORD dwPositionMethod, DWORD dwPartition, DWORD dwOffsetLow, DWORD dwOffsetHigh, BOOL bImmediate );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_SetTapePosition( HANDLE hDevice, DWORD dwPositionMethod, DWORD dwPartition, DWORD dwOffsetLow, DWORD dwOffsetHigh, BOOL bImmediate )
+{
+    static FN_SetTapePosition *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetTapePosition", &g_Kernel32);
+    return pfn( hDevice, dwPositionMethod, dwPartition, dwOffsetLow, dwOffsetHigh, bImmediate );
+}
+
+typedef DWORD WINAPI FN_GetTapePosition( HANDLE hDevice, DWORD dwPositionType, LPDWORD lpdwPartition, LPDWORD lpdwOffsetLow, LPDWORD lpdwOffsetHigh );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetTapePosition( HANDLE hDevice, DWORD dwPositionType, LPDWORD lpdwPartition, LPDWORD lpdwOffsetLow, LPDWORD lpdwOffsetHigh )
+{
+    static FN_GetTapePosition *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetTapePosition", &g_Kernel32);
+    return pfn( hDevice, dwPositionType, lpdwPartition, lpdwOffsetLow, lpdwOffsetHigh );
+}
+
+typedef DWORD WINAPI FN_PrepareTape( HANDLE hDevice, DWORD dwOperation, BOOL bImmediate );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_PrepareTape( HANDLE hDevice, DWORD dwOperation, BOOL bImmediate )
+{
+    static FN_PrepareTape *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "PrepareTape", &g_Kernel32);
+    return pfn( hDevice, dwOperation, bImmediate );
+}
+
+typedef DWORD WINAPI FN_EraseTape( HANDLE hDevice, DWORD dwEraseType, BOOL bImmediate );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_EraseTape( HANDLE hDevice, DWORD dwEraseType, BOOL bImmediate )
+{
+    static FN_EraseTape *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EraseTape", &g_Kernel32);
+    return pfn( hDevice, dwEraseType, bImmediate );
+}
+
+typedef DWORD WINAPI FN_CreateTapePartition( HANDLE hDevice, DWORD dwPartitionMethod, DWORD dwCount, DWORD dwSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_CreateTapePartition( HANDLE hDevice, DWORD dwPartitionMethod, DWORD dwCount, DWORD dwSize )
+{
+    static FN_CreateTapePartition *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateTapePartition", &g_Kernel32);
+    return pfn( hDevice, dwPartitionMethod, dwCount, dwSize );
+}
+
+typedef DWORD WINAPI FN_WriteTapemark( HANDLE hDevice, DWORD dwTapemarkType, DWORD dwTapemarkCount, BOOL bImmediate );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_WriteTapemark( HANDLE hDevice, DWORD dwTapemarkType, DWORD dwTapemarkCount, BOOL bImmediate )
+{
+    static FN_WriteTapemark *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteTapemark", &g_Kernel32);
+    return pfn( hDevice, dwTapemarkType, dwTapemarkCount, bImmediate );
+}
+
+typedef DWORD WINAPI FN_GetTapeStatus( HANDLE hDevice );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetTapeStatus( HANDLE hDevice )
+{
+    static FN_GetTapeStatus *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetTapeStatus", &g_Kernel32);
+    return pfn( hDevice );
+}
+
+typedef DWORD WINAPI FN_GetTapeParameters( HANDLE hDevice, DWORD dwOperation, LPDWORD lpdwSize, LPVOID lpTapeInformation );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetTapeParameters( HANDLE hDevice, DWORD dwOperation, LPDWORD lpdwSize, LPVOID lpTapeInformation )
+{
+    static FN_GetTapeParameters *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetTapeParameters", &g_Kernel32);
+    return pfn( hDevice, dwOperation, lpdwSize, lpTapeInformation );
+}
+
+typedef DWORD WINAPI FN_SetTapeParameters( HANDLE hDevice, DWORD dwOperation, LPVOID lpTapeInformation );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_SetTapeParameters( HANDLE hDevice, DWORD dwOperation, LPVOID lpTapeInformation )
+{
+    static FN_SetTapeParameters *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetTapeParameters", &g_Kernel32);
+    return pfn( hDevice, dwOperation, lpTapeInformation );
+}
+
+typedef BOOL WINAPI FN_Beep( DWORD dwFreq, DWORD dwDuration );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Beep( DWORD dwFreq, DWORD dwDuration )
+{
+    static FN_Beep *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Beep", &g_Kernel32);
+    return pfn( dwFreq, dwDuration );
+}
+
+typedef int WINAPI FN_MulDiv( int nNumber, int nNumerator, int nDenominator );
+__declspec(dllexport) int WINAPI kPrf2Wrap_MulDiv( int nNumber, int nNumerator, int nDenominator )
+{
+    static FN_MulDiv *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MulDiv", &g_Kernel32);
+    return pfn( nNumber, nNumerator, nDenominator );
+}
+
+typedef VOID WINAPI FN_GetSystemTime( LPSYSTEMTIME lpSystemTime );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_GetSystemTime( LPSYSTEMTIME lpSystemTime )
+{
+    static FN_GetSystemTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemTime", &g_Kernel32);
+    pfn( lpSystemTime );
+}
+
+typedef VOID WINAPI FN_GetSystemTimeAsFileTime( LPFILETIME lpSystemTimeAsFileTime );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_GetSystemTimeAsFileTime( LPFILETIME lpSystemTimeAsFileTime )
+{
+    static FN_GetSystemTimeAsFileTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemTimeAsFileTime", &g_Kernel32);
+    pfn( lpSystemTimeAsFileTime );
+}
+
+typedef BOOL WINAPI FN_SetSystemTime( CONST SYSTEMTIME * lpSystemTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetSystemTime( CONST SYSTEMTIME * lpSystemTime )
+{
+    static FN_SetSystemTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetSystemTime", &g_Kernel32);
+    return pfn( lpSystemTime );
+}
+
+typedef VOID WINAPI FN_GetLocalTime( LPSYSTEMTIME lpSystemTime );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_GetLocalTime( LPSYSTEMTIME lpSystemTime )
+{
+    static FN_GetLocalTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLocalTime", &g_Kernel32);
+    pfn( lpSystemTime );
+}
+
+typedef BOOL WINAPI FN_SetLocalTime( CONST SYSTEMTIME * lpSystemTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetLocalTime( CONST SYSTEMTIME * lpSystemTime )
+{
+    static FN_SetLocalTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetLocalTime", &g_Kernel32);
+    return pfn( lpSystemTime );
+}
+
+typedef VOID WINAPI FN_GetSystemInfo( LPSYSTEM_INFO lpSystemInfo );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_GetSystemInfo( LPSYSTEM_INFO lpSystemInfo )
+{
+    static FN_GetSystemInfo *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemInfo", &g_Kernel32);
+    pfn( lpSystemInfo );
+}
+
+typedef BOOL WINAPI FN_SetSystemFileCacheSize( SIZE_T MinimumFileCacheSize, SIZE_T MaximumFileCacheSize, DWORD Flags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetSystemFileCacheSize( SIZE_T MinimumFileCacheSize, SIZE_T MaximumFileCacheSize, DWORD Flags )
+{
+    static FN_SetSystemFileCacheSize *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetSystemFileCacheSize", &g_Kernel32);
+    return pfn( MinimumFileCacheSize, MaximumFileCacheSize, Flags );
+}
+
+typedef BOOL WINAPI FN_GetSystemFileCacheSize( PSIZE_T lpMinimumFileCacheSize, PSIZE_T lpMaximumFileCacheSize, PDWORD lpFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetSystemFileCacheSize( PSIZE_T lpMinimumFileCacheSize, PSIZE_T lpMaximumFileCacheSize, PDWORD lpFlags )
+{
+    static FN_GetSystemFileCacheSize *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemFileCacheSize", &g_Kernel32);
+    return pfn( lpMinimumFileCacheSize, lpMaximumFileCacheSize, lpFlags );
+}
+
+typedef BOOL WINAPI FN_GetSystemRegistryQuota( PDWORD pdwQuotaAllowed, PDWORD pdwQuotaUsed );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetSystemRegistryQuota( PDWORD pdwQuotaAllowed, PDWORD pdwQuotaUsed )
+{
+    static FN_GetSystemRegistryQuota *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemRegistryQuota", &g_Kernel32);
+    return pfn( pdwQuotaAllowed, pdwQuotaUsed );
+}
+
+typedef BOOL WINAPI FN_GetSystemTimes( LPFILETIME lpIdleTime, LPFILETIME lpKernelTime, LPFILETIME lpUserTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetSystemTimes( LPFILETIME lpIdleTime, LPFILETIME lpKernelTime, LPFILETIME lpUserTime )
+{
+    static FN_GetSystemTimes *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemTimes", &g_Kernel32);
+    return pfn( lpIdleTime, lpKernelTime, lpUserTime );
+}
+
+typedef VOID WINAPI FN_GetNativeSystemInfo( LPSYSTEM_INFO lpSystemInfo );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_GetNativeSystemInfo( LPSYSTEM_INFO lpSystemInfo )
+{
+    static FN_GetNativeSystemInfo *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNativeSystemInfo", &g_Kernel32);
+    pfn( lpSystemInfo );
+}
+
+typedef BOOL WINAPI FN_IsProcessorFeaturePresent( DWORD ProcessorFeature );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsProcessorFeaturePresent( DWORD ProcessorFeature )
+{
+    static FN_IsProcessorFeaturePresent *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsProcessorFeaturePresent", &g_Kernel32);
+    return pfn( ProcessorFeature );
+}
+
+typedef BOOL WINAPI FN_SystemTimeToTzSpecificLocalTime( LPTIME_ZONE_INFORMATION lpTimeZoneInformation, LPSYSTEMTIME lpUniversalTime, LPSYSTEMTIME lpLocalTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SystemTimeToTzSpecificLocalTime( LPTIME_ZONE_INFORMATION lpTimeZoneInformation, LPSYSTEMTIME lpUniversalTime, LPSYSTEMTIME lpLocalTime )
+{
+    static FN_SystemTimeToTzSpecificLocalTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SystemTimeToTzSpecificLocalTime", &g_Kernel32);
+    return pfn( lpTimeZoneInformation, lpUniversalTime, lpLocalTime );
+}
+
+typedef BOOL WINAPI FN_TzSpecificLocalTimeToSystemTime( LPTIME_ZONE_INFORMATION lpTimeZoneInformation, LPSYSTEMTIME lpLocalTime, LPSYSTEMTIME lpUniversalTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_TzSpecificLocalTimeToSystemTime( LPTIME_ZONE_INFORMATION lpTimeZoneInformation, LPSYSTEMTIME lpLocalTime, LPSYSTEMTIME lpUniversalTime )
+{
+    static FN_TzSpecificLocalTimeToSystemTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "TzSpecificLocalTimeToSystemTime", &g_Kernel32);
+    return pfn( lpTimeZoneInformation, lpLocalTime, lpUniversalTime );
+}
+
+typedef DWORD WINAPI FN_GetTimeZoneInformation( LPTIME_ZONE_INFORMATION lpTimeZoneInformation );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetTimeZoneInformation( LPTIME_ZONE_INFORMATION lpTimeZoneInformation )
+{
+    static FN_GetTimeZoneInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetTimeZoneInformation", &g_Kernel32);
+    return pfn( lpTimeZoneInformation );
+}
+
+typedef BOOL WINAPI FN_SetTimeZoneInformation( CONST TIME_ZONE_INFORMATION * lpTimeZoneInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetTimeZoneInformation( CONST TIME_ZONE_INFORMATION * lpTimeZoneInformation )
+{
+    static FN_SetTimeZoneInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetTimeZoneInformation", &g_Kernel32);
+    return pfn( lpTimeZoneInformation );
+}
+
+typedef BOOL WINAPI FN_SystemTimeToFileTime( CONST SYSTEMTIME * lpSystemTime, LPFILETIME lpFileTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SystemTimeToFileTime( CONST SYSTEMTIME * lpSystemTime, LPFILETIME lpFileTime )
+{
+    static FN_SystemTimeToFileTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SystemTimeToFileTime", &g_Kernel32);
+    return pfn( lpSystemTime, lpFileTime );
+}
+
+typedef BOOL WINAPI FN_FileTimeToLocalFileTime( CONST FILETIME * lpFileTime, LPFILETIME lpLocalFileTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FileTimeToLocalFileTime( CONST FILETIME * lpFileTime, LPFILETIME lpLocalFileTime )
+{
+    static FN_FileTimeToLocalFileTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FileTimeToLocalFileTime", &g_Kernel32);
+    return pfn( lpFileTime, lpLocalFileTime );
+}
+
+typedef BOOL WINAPI FN_LocalFileTimeToFileTime( CONST FILETIME * lpLocalFileTime, LPFILETIME lpFileTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LocalFileTimeToFileTime( CONST FILETIME * lpLocalFileTime, LPFILETIME lpFileTime )
+{
+    static FN_LocalFileTimeToFileTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LocalFileTimeToFileTime", &g_Kernel32);
+    return pfn( lpLocalFileTime, lpFileTime );
+}
+
+typedef BOOL WINAPI FN_FileTimeToSystemTime( CONST FILETIME * lpFileTime, LPSYSTEMTIME lpSystemTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FileTimeToSystemTime( CONST FILETIME * lpFileTime, LPSYSTEMTIME lpSystemTime )
+{
+    static FN_FileTimeToSystemTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FileTimeToSystemTime", &g_Kernel32);
+    return pfn( lpFileTime, lpSystemTime );
+}
+
+typedef LONG WINAPI FN_CompareFileTime( CONST FILETIME * lpFileTime1, CONST FILETIME * lpFileTime2 );
+__declspec(dllexport) LONG WINAPI kPrf2Wrap_CompareFileTime( CONST FILETIME * lpFileTime1, CONST FILETIME * lpFileTime2 )
+{
+    static FN_CompareFileTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CompareFileTime", &g_Kernel32);
+    return pfn( lpFileTime1, lpFileTime2 );
+}
+
+typedef BOOL WINAPI FN_FileTimeToDosDateTime( CONST FILETIME * lpFileTime, LPWORD lpFatDate, LPWORD lpFatTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FileTimeToDosDateTime( CONST FILETIME * lpFileTime, LPWORD lpFatDate, LPWORD lpFatTime )
+{
+    static FN_FileTimeToDosDateTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FileTimeToDosDateTime", &g_Kernel32);
+    return pfn( lpFileTime, lpFatDate, lpFatTime );
+}
+
+typedef BOOL WINAPI FN_DosDateTimeToFileTime( WORD wFatDate, WORD wFatTime, LPFILETIME lpFileTime );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DosDateTimeToFileTime( WORD wFatDate, WORD wFatTime, LPFILETIME lpFileTime )
+{
+    static FN_DosDateTimeToFileTime *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DosDateTimeToFileTime", &g_Kernel32);
+    return pfn( wFatDate, wFatTime, lpFileTime );
+}
+
+typedef DWORD WINAPI FN_GetTickCount( VOID );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetTickCount( VOID )
+{
+    static FN_GetTickCount *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetTickCount", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_SetSystemTimeAdjustment( DWORD dwTimeAdjustment, BOOL bTimeAdjustmentDisabled );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetSystemTimeAdjustment( DWORD dwTimeAdjustment, BOOL bTimeAdjustmentDisabled )
+{
+    static FN_SetSystemTimeAdjustment *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetSystemTimeAdjustment", &g_Kernel32);
+    return pfn( dwTimeAdjustment, bTimeAdjustmentDisabled );
+}
+
+typedef BOOL WINAPI FN_GetSystemTimeAdjustment( PDWORD lpTimeAdjustment, PDWORD lpTimeIncrement, PBOOL lpTimeAdjustmentDisabled );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetSystemTimeAdjustment( PDWORD lpTimeAdjustment, PDWORD lpTimeIncrement, PBOOL lpTimeAdjustmentDisabled )
+{
+    static FN_GetSystemTimeAdjustment *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemTimeAdjustment", &g_Kernel32);
+    return pfn( lpTimeAdjustment, lpTimeIncrement, lpTimeAdjustmentDisabled );
+}
+
+typedef DWORD WINAPI FN_FormatMessageA( DWORD dwFlags, LPCVOID lpSource, DWORD dwMessageId, DWORD dwLanguageId, LPSTR lpBuffer, DWORD nSize, va_list * Arguments );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_FormatMessageA( DWORD dwFlags, LPCVOID lpSource, DWORD dwMessageId, DWORD dwLanguageId, LPSTR lpBuffer, DWORD nSize, va_list * Arguments )
+{
+    static FN_FormatMessageA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FormatMessageA", &g_Kernel32);
+    return pfn( dwFlags, lpSource, dwMessageId, dwLanguageId, lpBuffer, nSize, Arguments );
+}
+
+typedef DWORD WINAPI FN_FormatMessageW( DWORD dwFlags, LPCVOID lpSource, DWORD dwMessageId, DWORD dwLanguageId, LPWSTR lpBuffer, DWORD nSize, va_list * Arguments );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_FormatMessageW( DWORD dwFlags, LPCVOID lpSource, DWORD dwMessageId, DWORD dwLanguageId, LPWSTR lpBuffer, DWORD nSize, va_list * Arguments )
+{
+    static FN_FormatMessageW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FormatMessageW", &g_Kernel32);
+    return pfn( dwFlags, lpSource, dwMessageId, dwLanguageId, lpBuffer, nSize, Arguments );
+}
+
+typedef BOOL WINAPI FN_CreatePipe( PHANDLE hReadPipe, PHANDLE hWritePipe, LPSECURITY_ATTRIBUTES lpPipeAttributes, DWORD nSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreatePipe( PHANDLE hReadPipe, PHANDLE hWritePipe, LPSECURITY_ATTRIBUTES lpPipeAttributes, DWORD nSize )
+{
+    static FN_CreatePipe *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreatePipe", &g_Kernel32);
+    return pfn( hReadPipe, hWritePipe, lpPipeAttributes, nSize );
+}
+
+typedef BOOL WINAPI FN_ConnectNamedPipe( HANDLE hNamedPipe, LPOVERLAPPED lpOverlapped );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ConnectNamedPipe( HANDLE hNamedPipe, LPOVERLAPPED lpOverlapped )
+{
+    static FN_ConnectNamedPipe *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ConnectNamedPipe", &g_Kernel32);
+    return pfn( hNamedPipe, lpOverlapped );
+}
+
+typedef BOOL WINAPI FN_DisconnectNamedPipe( HANDLE hNamedPipe );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DisconnectNamedPipe( HANDLE hNamedPipe )
+{
+    static FN_DisconnectNamedPipe *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DisconnectNamedPipe", &g_Kernel32);
+    return pfn( hNamedPipe );
+}
+
+typedef BOOL WINAPI FN_SetNamedPipeHandleState( HANDLE hNamedPipe, LPDWORD lpMode, LPDWORD lpMaxCollectionCount, LPDWORD lpCollectDataTimeout );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetNamedPipeHandleState( HANDLE hNamedPipe, LPDWORD lpMode, LPDWORD lpMaxCollectionCount, LPDWORD lpCollectDataTimeout )
+{
+    static FN_SetNamedPipeHandleState *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetNamedPipeHandleState", &g_Kernel32);
+    return pfn( hNamedPipe, lpMode, lpMaxCollectionCount, lpCollectDataTimeout );
+}
+
+typedef BOOL WINAPI FN_GetNamedPipeInfo( HANDLE hNamedPipe, LPDWORD lpFlags, LPDWORD lpOutBufferSize, LPDWORD lpInBufferSize, LPDWORD lpMaxInstances );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetNamedPipeInfo( HANDLE hNamedPipe, LPDWORD lpFlags, LPDWORD lpOutBufferSize, LPDWORD lpInBufferSize, LPDWORD lpMaxInstances )
+{
+    static FN_GetNamedPipeInfo *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNamedPipeInfo", &g_Kernel32);
+    return pfn( hNamedPipe, lpFlags, lpOutBufferSize, lpInBufferSize, lpMaxInstances );
+}
+
+typedef BOOL WINAPI FN_PeekNamedPipe( HANDLE hNamedPipe, LPVOID lpBuffer, DWORD nBufferSize, LPDWORD lpBytesRead, LPDWORD lpTotalBytesAvail, LPDWORD lpBytesLeftThisMessage );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_PeekNamedPipe( HANDLE hNamedPipe, LPVOID lpBuffer, DWORD nBufferSize, LPDWORD lpBytesRead, LPDWORD lpTotalBytesAvail, LPDWORD lpBytesLeftThisMessage )
+{
+    static FN_PeekNamedPipe *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "PeekNamedPipe", &g_Kernel32);
+    return pfn( hNamedPipe, lpBuffer, nBufferSize, lpBytesRead, lpTotalBytesAvail, lpBytesLeftThisMessage );
+}
+
+typedef BOOL WINAPI FN_TransactNamedPipe( HANDLE hNamedPipe, LPVOID lpInBuffer, DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize, LPDWORD lpBytesRead, LPOVERLAPPED lpOverlapped );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_TransactNamedPipe( HANDLE hNamedPipe, LPVOID lpInBuffer, DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize, LPDWORD lpBytesRead, LPOVERLAPPED lpOverlapped )
+{
+    static FN_TransactNamedPipe *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "TransactNamedPipe", &g_Kernel32);
+    return pfn( hNamedPipe, lpInBuffer, nInBufferSize, lpOutBuffer, nOutBufferSize, lpBytesRead, lpOverlapped );
+}
+
+typedef HANDLE WINAPI FN_CreateMailslotA( LPCSTR lpName, DWORD nMaxMessageSize, DWORD lReadTimeout, LPSECURITY_ATTRIBUTES lpSecurityAttributes );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateMailslotA( LPCSTR lpName, DWORD nMaxMessageSize, DWORD lReadTimeout, LPSECURITY_ATTRIBUTES lpSecurityAttributes )
+{
+    static FN_CreateMailslotA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateMailslotA", &g_Kernel32);
+    return pfn( lpName, nMaxMessageSize, lReadTimeout, lpSecurityAttributes );
+}
+
+typedef HANDLE WINAPI FN_CreateMailslotW( LPCWSTR lpName, DWORD nMaxMessageSize, DWORD lReadTimeout, LPSECURITY_ATTRIBUTES lpSecurityAttributes );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateMailslotW( LPCWSTR lpName, DWORD nMaxMessageSize, DWORD lReadTimeout, LPSECURITY_ATTRIBUTES lpSecurityAttributes )
+{
+    static FN_CreateMailslotW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateMailslotW", &g_Kernel32);
+    return pfn( lpName, nMaxMessageSize, lReadTimeout, lpSecurityAttributes );
+}
+
+typedef BOOL WINAPI FN_GetMailslotInfo( HANDLE hMailslot, LPDWORD lpMaxMessageSize, LPDWORD lpNextSize, LPDWORD lpMessageCount, LPDWORD lpReadTimeout );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetMailslotInfo( HANDLE hMailslot, LPDWORD lpMaxMessageSize, LPDWORD lpNextSize, LPDWORD lpMessageCount, LPDWORD lpReadTimeout )
+{
+    static FN_GetMailslotInfo *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetMailslotInfo", &g_Kernel32);
+    return pfn( hMailslot, lpMaxMessageSize, lpNextSize, lpMessageCount, lpReadTimeout );
+}
+
+typedef BOOL WINAPI FN_SetMailslotInfo( HANDLE hMailslot, DWORD lReadTimeout );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetMailslotInfo( HANDLE hMailslot, DWORD lReadTimeout )
+{
+    static FN_SetMailslotInfo *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetMailslotInfo", &g_Kernel32);
+    return pfn( hMailslot, lReadTimeout );
+}
+
+typedef LPVOID WINAPI FN_MapViewOfFile( HANDLE hFileMappingObject, DWORD dwDesiredAccess, DWORD dwFileOffsetHigh, DWORD dwFileOffsetLow, SIZE_T dwNumberOfBytesToMap );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_MapViewOfFile( HANDLE hFileMappingObject, DWORD dwDesiredAccess, DWORD dwFileOffsetHigh, DWORD dwFileOffsetLow, SIZE_T dwNumberOfBytesToMap )
+{
+    static FN_MapViewOfFile *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MapViewOfFile", &g_Kernel32);
+    return pfn( hFileMappingObject, dwDesiredAccess, dwFileOffsetHigh, dwFileOffsetLow, dwNumberOfBytesToMap );
+}
+
+typedef BOOL WINAPI FN_FlushViewOfFile( LPCVOID lpBaseAddress, SIZE_T dwNumberOfBytesToFlush );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FlushViewOfFile( LPCVOID lpBaseAddress, SIZE_T dwNumberOfBytesToFlush )
+{
+    static FN_FlushViewOfFile *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FlushViewOfFile", &g_Kernel32);
+    return pfn( lpBaseAddress, dwNumberOfBytesToFlush );
+}
+
+typedef BOOL WINAPI FN_UnmapViewOfFile( LPCVOID lpBaseAddress );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_UnmapViewOfFile( LPCVOID lpBaseAddress )
+{
+    static FN_UnmapViewOfFile *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "UnmapViewOfFile", &g_Kernel32);
+    return pfn( lpBaseAddress );
+}
+
+typedef BOOL WINAPI FN_EncryptFileA( LPCSTR lpFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EncryptFileA( LPCSTR lpFileName )
+{
+    static FN_EncryptFileA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EncryptFileA", &g_Kernel32);
+    return pfn( lpFileName );
+}
+
+typedef BOOL WINAPI FN_EncryptFileW( LPCWSTR lpFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EncryptFileW( LPCWSTR lpFileName )
+{
+    static FN_EncryptFileW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EncryptFileW", &g_Kernel32);
+    return pfn( lpFileName );
+}
+
+typedef BOOL WINAPI FN_DecryptFileA( LPCSTR lpFileName, DWORD dwReserved );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DecryptFileA( LPCSTR lpFileName, DWORD dwReserved )
+{
+    static FN_DecryptFileA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DecryptFileA", &g_Kernel32);
+    return pfn( lpFileName, dwReserved );
+}
+
+typedef BOOL WINAPI FN_DecryptFileW( LPCWSTR lpFileName, DWORD dwReserved );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DecryptFileW( LPCWSTR lpFileName, DWORD dwReserved )
+{
+    static FN_DecryptFileW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DecryptFileW", &g_Kernel32);
+    return pfn( lpFileName, dwReserved );
+}
+
+typedef BOOL WINAPI FN_FileEncryptionStatusA( LPCSTR lpFileName, LPDWORD lpStatus );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FileEncryptionStatusA( LPCSTR lpFileName, LPDWORD lpStatus )
+{
+    static FN_FileEncryptionStatusA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FileEncryptionStatusA", &g_Kernel32);
+    return pfn( lpFileName, lpStatus );
+}
+
+typedef BOOL WINAPI FN_FileEncryptionStatusW( LPCWSTR lpFileName, LPDWORD lpStatus );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FileEncryptionStatusW( LPCWSTR lpFileName, LPDWORD lpStatus )
+{
+    static FN_FileEncryptionStatusW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FileEncryptionStatusW", &g_Kernel32);
+    return pfn( lpFileName, lpStatus );
+}
+
+typedef DWORD WINAPI FN_OpenEncryptedFileRawA( LPCSTR lpFileName, ULONG ulFlags, PVOID * pvContext );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_OpenEncryptedFileRawA( LPCSTR lpFileName, ULONG ulFlags, PVOID * pvContext )
+{
+    static FN_OpenEncryptedFileRawA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenEncryptedFileRawA", &g_Kernel32);
+    return pfn( lpFileName, ulFlags, pvContext );
+}
+
+typedef DWORD WINAPI FN_OpenEncryptedFileRawW( LPCWSTR lpFileName, ULONG ulFlags, PVOID * pvContext );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_OpenEncryptedFileRawW( LPCWSTR lpFileName, ULONG ulFlags, PVOID * pvContext )
+{
+    static FN_OpenEncryptedFileRawW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenEncryptedFileRawW", &g_Kernel32);
+    return pfn( lpFileName, ulFlags, pvContext );
+}
+
+typedef DWORD WINAPI FN_ReadEncryptedFileRaw( PFE_EXPORT_FUNC pfExportCallback, PVOID pvCallbackContext, PVOID pvContext );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_ReadEncryptedFileRaw( PFE_EXPORT_FUNC pfExportCallback, PVOID pvCallbackContext, PVOID pvContext )
+{
+    static FN_ReadEncryptedFileRaw *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadEncryptedFileRaw", &g_Kernel32);
+    return pfn( pfExportCallback, pvCallbackContext, pvContext );
+}
+
+typedef DWORD WINAPI FN_WriteEncryptedFileRaw( PFE_IMPORT_FUNC pfImportCallback, PVOID pvCallbackContext, PVOID pvContext );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_WriteEncryptedFileRaw( PFE_IMPORT_FUNC pfImportCallback, PVOID pvCallbackContext, PVOID pvContext )
+{
+    static FN_WriteEncryptedFileRaw *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteEncryptedFileRaw", &g_Kernel32);
+    return pfn( pfImportCallback, pvCallbackContext, pvContext );
+}
+
+typedef VOID WINAPI FN_CloseEncryptedFileRaw( PVOID pvContext );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_CloseEncryptedFileRaw( PVOID pvContext )
+{
+    static FN_CloseEncryptedFileRaw *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CloseEncryptedFileRaw", &g_Kernel32);
+    pfn( pvContext );
+}
+
+typedef int WINAPI FN_lstrcmpA( LPCSTR lpString1, LPCSTR lpString2 );
+__declspec(dllexport) int WINAPI kPrf2Wrap_lstrcmpA( LPCSTR lpString1, LPCSTR lpString2 )
+{
+    static FN_lstrcmpA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcmpA", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef int WINAPI FN_lstrcmpW( LPCWSTR lpString1, LPCWSTR lpString2 );
+__declspec(dllexport) int WINAPI kPrf2Wrap_lstrcmpW( LPCWSTR lpString1, LPCWSTR lpString2 )
+{
+    static FN_lstrcmpW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcmpW", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef int WINAPI FN_lstrcmpiA( LPCSTR lpString1, LPCSTR lpString2 );
+__declspec(dllexport) int WINAPI kPrf2Wrap_lstrcmpiA( LPCSTR lpString1, LPCSTR lpString2 )
+{
+    static FN_lstrcmpiA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcmpiA", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef int WINAPI FN_lstrcmpiW( LPCWSTR lpString1, LPCWSTR lpString2 );
+__declspec(dllexport) int WINAPI kPrf2Wrap_lstrcmpiW( LPCWSTR lpString1, LPCWSTR lpString2 )
+{
+    static FN_lstrcmpiW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcmpiW", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef LPSTR WINAPI FN_lstrcpynA( LPSTR lpString1, LPCSTR lpString2, int iMaxLength );
+__declspec(dllexport) LPSTR WINAPI kPrf2Wrap_lstrcpynA( LPSTR lpString1, LPCSTR lpString2, int iMaxLength )
+{
+    static FN_lstrcpynA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcpynA", &g_Kernel32);
+    return pfn( lpString1, lpString2, iMaxLength );
+}
+
+typedef LPWSTR WINAPI FN_lstrcpynW( LPWSTR lpString1, LPCWSTR lpString2, int iMaxLength );
+__declspec(dllexport) LPWSTR WINAPI kPrf2Wrap_lstrcpynW( LPWSTR lpString1, LPCWSTR lpString2, int iMaxLength )
+{
+    static FN_lstrcpynW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcpynW", &g_Kernel32);
+    return pfn( lpString1, lpString2, iMaxLength );
+}
+
+typedef LPSTR WINAPI FN_lstrcpyA( LPSTR lpString1, LPCSTR lpString2 );
+__declspec(dllexport) LPSTR WINAPI kPrf2Wrap_lstrcpyA( LPSTR lpString1, LPCSTR lpString2 )
+{
+    static FN_lstrcpyA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcpyA", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef LPWSTR WINAPI FN_lstrcpyW( LPWSTR lpString1, LPCWSTR lpString2 );
+__declspec(dllexport) LPWSTR WINAPI kPrf2Wrap_lstrcpyW( LPWSTR lpString1, LPCWSTR lpString2 )
+{
+    static FN_lstrcpyW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcpyW", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef LPSTR WINAPI FN_lstrcatA( LPSTR lpString1, LPCSTR lpString2 );
+__declspec(dllexport) LPSTR WINAPI kPrf2Wrap_lstrcatA( LPSTR lpString1, LPCSTR lpString2 )
+{
+    static FN_lstrcatA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcatA", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef LPWSTR WINAPI FN_lstrcatW( LPWSTR lpString1, LPCWSTR lpString2 );
+__declspec(dllexport) LPWSTR WINAPI kPrf2Wrap_lstrcatW( LPWSTR lpString1, LPCWSTR lpString2 )
+{
+    static FN_lstrcatW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcatW", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef int WINAPI FN_lstrlenA( LPCSTR lpString );
+__declspec(dllexport) int WINAPI kPrf2Wrap_lstrlenA( LPCSTR lpString )
+{
+    static FN_lstrlenA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrlenA", &g_Kernel32);
+    return pfn( lpString );
+}
+
+typedef int WINAPI FN_lstrlenW( LPCWSTR lpString );
+__declspec(dllexport) int WINAPI kPrf2Wrap_lstrlenW( LPCWSTR lpString )
+{
+    static FN_lstrlenW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrlenW", &g_Kernel32);
+    return pfn( lpString );
+}
+
+typedef HFILE WINAPI FN_OpenFile( LPCSTR lpFileName, LPOFSTRUCT lpReOpenBuff, UINT uStyle );
+__declspec(dllexport) HFILE WINAPI kPrf2Wrap_OpenFile( LPCSTR lpFileName, LPOFSTRUCT lpReOpenBuff, UINT uStyle )
+{
+    static FN_OpenFile *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenFile", &g_Kernel32);
+    return pfn( lpFileName, lpReOpenBuff, uStyle );
+}
+
+typedef HFILE WINAPI FN__lopen( LPCSTR lpPathName, int iReadWrite );
+__declspec(dllexport) HFILE WINAPI kPrf2Wrap__lopen( LPCSTR lpPathName, int iReadWrite )
+{
+    static FN__lopen *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "_lopen", &g_Kernel32);
+    return pfn( lpPathName, iReadWrite );
+}
+
+typedef HFILE WINAPI FN__lcreat( LPCSTR lpPathName, int iAttribute );
+__declspec(dllexport) HFILE WINAPI kPrf2Wrap__lcreat( LPCSTR lpPathName, int iAttribute )
+{
+    static FN__lcreat *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "_lcreat", &g_Kernel32);
+    return pfn( lpPathName, iAttribute );
+}
+
+typedef UINT WINAPI FN__lread( HFILE hFile, LPVOID lpBuffer, UINT uBytes );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap__lread( HFILE hFile, LPVOID lpBuffer, UINT uBytes )
+{
+    static FN__lread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "_lread", &g_Kernel32);
+    return pfn( hFile, lpBuffer, uBytes );
+}
+
+typedef UINT WINAPI FN__lwrite( HFILE hFile, LPCCH lpBuffer, UINT uBytes );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap__lwrite( HFILE hFile, LPCCH lpBuffer, UINT uBytes )
+{
+    static FN__lwrite *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "_lwrite", &g_Kernel32);
+    return pfn( hFile, lpBuffer, uBytes );
+}
+
+typedef long WINAPI FN__hread( HFILE hFile, LPVOID lpBuffer, long lBytes );
+__declspec(dllexport) long WINAPI kPrf2Wrap__hread( HFILE hFile, LPVOID lpBuffer, long lBytes )
+{
+    static FN__hread *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "_hread", &g_Kernel32);
+    return pfn( hFile, lpBuffer, lBytes );
+}
+
+typedef long WINAPI FN__hwrite( HFILE hFile, LPCCH lpBuffer, long lBytes );
+__declspec(dllexport) long WINAPI kPrf2Wrap__hwrite( HFILE hFile, LPCCH lpBuffer, long lBytes )
+{
+    static FN__hwrite *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "_hwrite", &g_Kernel32);
+    return pfn( hFile, lpBuffer, lBytes );
+}
+
+typedef HFILE WINAPI FN__lclose( HFILE hFile );
+__declspec(dllexport) HFILE WINAPI kPrf2Wrap__lclose( HFILE hFile )
+{
+    static FN__lclose *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "_lclose", &g_Kernel32);
+    return pfn( hFile );
+}
+
+typedef LONG WINAPI FN__llseek( HFILE hFile, LONG lOffset, int iOrigin );
+__declspec(dllexport) LONG WINAPI kPrf2Wrap__llseek( HFILE hFile, LONG lOffset, int iOrigin )
+{
+    static FN__llseek *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "_llseek", &g_Kernel32);
+    return pfn( hFile, lOffset, iOrigin );
+}
+
+typedef BOOL WINAPI FN_IsTextUnicode( CONST VOID * lpv, int iSize, LPINT lpiResult );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsTextUnicode( CONST VOID * lpv, int iSize, LPINT lpiResult )
+{
+    static FN_IsTextUnicode *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsTextUnicode", &g_Kernel32);
+    return pfn( lpv, iSize, lpiResult );
+}
+
+typedef DWORD WINAPI FN_FlsAlloc( PFLS_CALLBACK_FUNCTION lpCallback );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_FlsAlloc( PFLS_CALLBACK_FUNCTION lpCallback )
+{
+    static FN_FlsAlloc *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FlsAlloc", &g_Kernel32);
+    return pfn( lpCallback );
+}
+
+typedef PVOID WINAPI FN_FlsGetValue( DWORD dwFlsIndex );
+__declspec(dllexport) PVOID WINAPI kPrf2Wrap_FlsGetValue( DWORD dwFlsIndex )
+{
+    static FN_FlsGetValue *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FlsGetValue", &g_Kernel32);
+    return pfn( dwFlsIndex );
+}
+
+typedef BOOL WINAPI FN_FlsSetValue( DWORD dwFlsIndex, PVOID lpFlsData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FlsSetValue( DWORD dwFlsIndex, PVOID lpFlsData )
+{
+    static FN_FlsSetValue *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FlsSetValue", &g_Kernel32);
+    return pfn( dwFlsIndex, lpFlsData );
+}
+
+typedef BOOL WINAPI FN_FlsFree( DWORD dwFlsIndex );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FlsFree( DWORD dwFlsIndex )
+{
+    static FN_FlsFree *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FlsFree", &g_Kernel32);
+    return pfn( dwFlsIndex );
+}
+
+typedef DWORD WINAPI FN_TlsAlloc( VOID );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_TlsAlloc( VOID )
+{
+    static FN_TlsAlloc *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "TlsAlloc", &g_Kernel32);
+    return pfn ();
+}
+
+typedef LPVOID WINAPI FN_TlsGetValue( DWORD dwTlsIndex );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_TlsGetValue( DWORD dwTlsIndex )
+{
+    static FN_TlsGetValue *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "TlsGetValue", &g_Kernel32);
+    return pfn( dwTlsIndex );
+}
+
+typedef BOOL WINAPI FN_TlsSetValue( DWORD dwTlsIndex, LPVOID lpTlsValue );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_TlsSetValue( DWORD dwTlsIndex, LPVOID lpTlsValue )
+{
+    static FN_TlsSetValue *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "TlsSetValue", &g_Kernel32);
+    return pfn( dwTlsIndex, lpTlsValue );
+}
+
+typedef BOOL WINAPI FN_TlsFree( DWORD dwTlsIndex );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_TlsFree( DWORD dwTlsIndex )
+{
+    static FN_TlsFree *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "TlsFree", &g_Kernel32);
+    return pfn( dwTlsIndex );
+}
+
+typedef DWORD WINAPI FN_SleepEx( DWORD dwMilliseconds, BOOL bAlertable );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_SleepEx( DWORD dwMilliseconds, BOOL bAlertable )
+{
+    static FN_SleepEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SleepEx", &g_Kernel32);
+    return pfn( dwMilliseconds, bAlertable );
+}
+
+typedef DWORD WINAPI FN_WaitForSingleObjectEx( HANDLE hHandle, DWORD dwMilliseconds, BOOL bAlertable );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_WaitForSingleObjectEx( HANDLE hHandle, DWORD dwMilliseconds, BOOL bAlertable )
+{
+    static FN_WaitForSingleObjectEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WaitForSingleObjectEx", &g_Kernel32);
+    return pfn( hHandle, dwMilliseconds, bAlertable );
+}
+
+typedef DWORD WINAPI FN_WaitForMultipleObjectsEx( DWORD nCount, CONST HANDLE * lpHandles, BOOL bWaitAll, DWORD dwMilliseconds, BOOL bAlertable );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_WaitForMultipleObjectsEx( DWORD nCount, CONST HANDLE * lpHandles, BOOL bWaitAll, DWORD dwMilliseconds, BOOL bAlertable )
+{
+    static FN_WaitForMultipleObjectsEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WaitForMultipleObjectsEx", &g_Kernel32);
+    return pfn( nCount, lpHandles, bWaitAll, dwMilliseconds, bAlertable );
+}
+
+typedef DWORD WINAPI FN_SignalObjectAndWait( HANDLE hObjectToSignal, HANDLE hObjectToWaitOn, DWORD dwMilliseconds, BOOL bAlertable );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_SignalObjectAndWait( HANDLE hObjectToSignal, HANDLE hObjectToWaitOn, DWORD dwMilliseconds, BOOL bAlertable )
+{
+    static FN_SignalObjectAndWait *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SignalObjectAndWait", &g_Kernel32);
+    return pfn( hObjectToSignal, hObjectToWaitOn, dwMilliseconds, bAlertable );
+}
+
+typedef BOOL WINAPI FN_ReadFileEx( HANDLE hFile, LPVOID lpBuffer, DWORD nNumberOfBytesToRead, LPOVERLAPPED lpOverlapped, LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadFileEx( HANDLE hFile, LPVOID lpBuffer, DWORD nNumberOfBytesToRead, LPOVERLAPPED lpOverlapped, LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine )
+{
+    static FN_ReadFileEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadFileEx", &g_Kernel32);
+    return pfn( hFile, lpBuffer, nNumberOfBytesToRead, lpOverlapped, lpCompletionRoutine );
+}
+
+typedef BOOL WINAPI FN_WriteFileEx( HANDLE hFile, LPCVOID lpBuffer, DWORD nNumberOfBytesToWrite, LPOVERLAPPED lpOverlapped, LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteFileEx( HANDLE hFile, LPCVOID lpBuffer, DWORD nNumberOfBytesToWrite, LPOVERLAPPED lpOverlapped, LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine )
+{
+    static FN_WriteFileEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteFileEx", &g_Kernel32);
+    return pfn( hFile, lpBuffer, nNumberOfBytesToWrite, lpOverlapped, lpCompletionRoutine );
+}
+
+typedef BOOL WINAPI FN_BackupRead( HANDLE hFile, LPBYTE lpBuffer, DWORD nNumberOfBytesToRead, LPDWORD lpNumberOfBytesRead, BOOL bAbort, BOOL bProcessSecurity, LPVOID * lpContext );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_BackupRead( HANDLE hFile, LPBYTE lpBuffer, DWORD nNumberOfBytesToRead, LPDWORD lpNumberOfBytesRead, BOOL bAbort, BOOL bProcessSecurity, LPVOID * lpContext )
+{
+    static FN_BackupRead *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "BackupRead", &g_Kernel32);
+    return pfn( hFile, lpBuffer, nNumberOfBytesToRead, lpNumberOfBytesRead, bAbort, bProcessSecurity, lpContext );
+}
+
+typedef BOOL WINAPI FN_BackupSeek( HANDLE hFile, DWORD dwLowBytesToSeek, DWORD dwHighBytesToSeek, LPDWORD lpdwLowByteSeeked, LPDWORD lpdwHighByteSeeked, LPVOID * lpContext );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_BackupSeek( HANDLE hFile, DWORD dwLowBytesToSeek, DWORD dwHighBytesToSeek, LPDWORD lpdwLowByteSeeked, LPDWORD lpdwHighByteSeeked, LPVOID * lpContext )
+{
+    static FN_BackupSeek *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "BackupSeek", &g_Kernel32);
+    return pfn( hFile, dwLowBytesToSeek, dwHighBytesToSeek, lpdwLowByteSeeked, lpdwHighByteSeeked, lpContext );
+}
+
+typedef BOOL WINAPI FN_BackupWrite( HANDLE hFile, LPBYTE lpBuffer, DWORD nNumberOfBytesToWrite, LPDWORD lpNumberOfBytesWritten, BOOL bAbort, BOOL bProcessSecurity, LPVOID * lpContext );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_BackupWrite( HANDLE hFile, LPBYTE lpBuffer, DWORD nNumberOfBytesToWrite, LPDWORD lpNumberOfBytesWritten, BOOL bAbort, BOOL bProcessSecurity, LPVOID * lpContext )
+{
+    static FN_BackupWrite *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "BackupWrite", &g_Kernel32);
+    return pfn( hFile, lpBuffer, nNumberOfBytesToWrite, lpNumberOfBytesWritten, bAbort, bProcessSecurity, lpContext );
+}
+
+typedef BOOL WINAPI FN_ReadFileScatter( HANDLE hFile, FILE_SEGMENT_ELEMENT aSegmentArray[], DWORD nNumberOfBytesToRead, LPDWORD lpReserved, LPOVERLAPPED lpOverlapped );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadFileScatter( HANDLE hFile, FILE_SEGMENT_ELEMENT aSegmentArray[], DWORD nNumberOfBytesToRead, LPDWORD lpReserved, LPOVERLAPPED lpOverlapped )
+{
+    static FN_ReadFileScatter *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadFileScatter", &g_Kernel32);
+    return pfn( hFile, aSegmentArray, nNumberOfBytesToRead, lpReserved, lpOverlapped );
+}
+
+typedef BOOL WINAPI FN_WriteFileGather( HANDLE hFile, FILE_SEGMENT_ELEMENT aSegmentArray[], DWORD nNumberOfBytesToWrite, LPDWORD lpReserved, LPOVERLAPPED lpOverlapped );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteFileGather( HANDLE hFile, FILE_SEGMENT_ELEMENT aSegmentArray[], DWORD nNumberOfBytesToWrite, LPDWORD lpReserved, LPOVERLAPPED lpOverlapped )
+{
+    static FN_WriteFileGather *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteFileGather", &g_Kernel32);
+    return pfn( hFile, aSegmentArray, nNumberOfBytesToWrite, lpReserved, lpOverlapped );
+}
+
+typedef HANDLE WINAPI FN_CreateMutexA( LPSECURITY_ATTRIBUTES lpMutexAttributes, BOOL bInitialOwner, LPCSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateMutexA( LPSECURITY_ATTRIBUTES lpMutexAttributes, BOOL bInitialOwner, LPCSTR lpName )
+{
+    static FN_CreateMutexA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateMutexA", &g_Kernel32);
+    return pfn( lpMutexAttributes, bInitialOwner, lpName );
+}
+
+typedef HANDLE WINAPI FN_CreateMutexW( LPSECURITY_ATTRIBUTES lpMutexAttributes, BOOL bInitialOwner, LPCWSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateMutexW( LPSECURITY_ATTRIBUTES lpMutexAttributes, BOOL bInitialOwner, LPCWSTR lpName )
+{
+    static FN_CreateMutexW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateMutexW", &g_Kernel32);
+    return pfn( lpMutexAttributes, bInitialOwner, lpName );
+}
+
+typedef HANDLE WINAPI FN_OpenMutexA( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenMutexA( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName )
+{
+    static FN_OpenMutexA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenMutexA", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, lpName );
+}
+
+typedef HANDLE WINAPI FN_OpenMutexW( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenMutexW( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName )
+{
+    static FN_OpenMutexW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenMutexW", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, lpName );
+}
+
+typedef HANDLE WINAPI FN_CreateEventA( LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset, BOOL bInitialState, LPCSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateEventA( LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset, BOOL bInitialState, LPCSTR lpName )
+{
+    static FN_CreateEventA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateEventA", &g_Kernel32);
+    return pfn( lpEventAttributes, bManualReset, bInitialState, lpName );
+}
+
+typedef HANDLE WINAPI FN_CreateEventW( LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset, BOOL bInitialState, LPCWSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateEventW( LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset, BOOL bInitialState, LPCWSTR lpName )
+{
+    static FN_CreateEventW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateEventW", &g_Kernel32);
+    return pfn( lpEventAttributes, bManualReset, bInitialState, lpName );
+}
+
+typedef HANDLE WINAPI FN_OpenEventA( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenEventA( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName )
+{
+    static FN_OpenEventA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenEventA", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, lpName );
+}
+
+typedef HANDLE WINAPI FN_OpenEventW( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenEventW( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName )
+{
+    static FN_OpenEventW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenEventW", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, lpName );
+}
+
+typedef HANDLE WINAPI FN_CreateSemaphoreA( LPSECURITY_ATTRIBUTES lpSemaphoreAttributes, LONG lInitialCount, LONG lMaximumCount, LPCSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateSemaphoreA( LPSECURITY_ATTRIBUTES lpSemaphoreAttributes, LONG lInitialCount, LONG lMaximumCount, LPCSTR lpName )
+{
+    static FN_CreateSemaphoreA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateSemaphoreA", &g_Kernel32);
+    return pfn( lpSemaphoreAttributes, lInitialCount, lMaximumCount, lpName );
+}
+
+typedef HANDLE WINAPI FN_CreateSemaphoreW( LPSECURITY_ATTRIBUTES lpSemaphoreAttributes, LONG lInitialCount, LONG lMaximumCount, LPCWSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateSemaphoreW( LPSECURITY_ATTRIBUTES lpSemaphoreAttributes, LONG lInitialCount, LONG lMaximumCount, LPCWSTR lpName )
+{
+    static FN_CreateSemaphoreW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateSemaphoreW", &g_Kernel32);
+    return pfn( lpSemaphoreAttributes, lInitialCount, lMaximumCount, lpName );
+}
+
+typedef HANDLE WINAPI FN_OpenSemaphoreA( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenSemaphoreA( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName )
+{
+    static FN_OpenSemaphoreA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenSemaphoreA", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, lpName );
+}
+
+typedef HANDLE WINAPI FN_OpenSemaphoreW( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenSemaphoreW( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName )
+{
+    static FN_OpenSemaphoreW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenSemaphoreW", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, lpName );
+}
+
+typedef HANDLE WINAPI FN_CreateWaitableTimerA( LPSECURITY_ATTRIBUTES lpTimerAttributes, BOOL bManualReset, LPCSTR lpTimerName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateWaitableTimerA( LPSECURITY_ATTRIBUTES lpTimerAttributes, BOOL bManualReset, LPCSTR lpTimerName )
+{
+    static FN_CreateWaitableTimerA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateWaitableTimerA", &g_Kernel32);
+    return pfn( lpTimerAttributes, bManualReset, lpTimerName );
+}
+
+typedef HANDLE WINAPI FN_CreateWaitableTimerW( LPSECURITY_ATTRIBUTES lpTimerAttributes, BOOL bManualReset, LPCWSTR lpTimerName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateWaitableTimerW( LPSECURITY_ATTRIBUTES lpTimerAttributes, BOOL bManualReset, LPCWSTR lpTimerName )
+{
+    static FN_CreateWaitableTimerW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateWaitableTimerW", &g_Kernel32);
+    return pfn( lpTimerAttributes, bManualReset, lpTimerName );
+}
+
+typedef HANDLE WINAPI FN_OpenWaitableTimerA( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpTimerName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenWaitableTimerA( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpTimerName )
+{
+    static FN_OpenWaitableTimerA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenWaitableTimerA", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, lpTimerName );
+}
+
+typedef HANDLE WINAPI FN_OpenWaitableTimerW( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpTimerName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenWaitableTimerW( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpTimerName )
+{
+    static FN_OpenWaitableTimerW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenWaitableTimerW", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, lpTimerName );
+}
+
+typedef BOOL WINAPI FN_SetWaitableTimer( HANDLE hTimer, const LARGE_INTEGER * lpDueTime, LONG lPeriod, PTIMERAPCROUTINE pfnCompletionRoutine, LPVOID lpArgToCompletionRoutine, BOOL fResume );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetWaitableTimer( HANDLE hTimer, const LARGE_INTEGER * lpDueTime, LONG lPeriod, PTIMERAPCROUTINE pfnCompletionRoutine, LPVOID lpArgToCompletionRoutine, BOOL fResume )
+{
+    static FN_SetWaitableTimer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetWaitableTimer", &g_Kernel32);
+    return pfn( hTimer, lpDueTime, lPeriod, pfnCompletionRoutine, lpArgToCompletionRoutine, fResume );
+}
+
+typedef BOOL WINAPI FN_CancelWaitableTimer( HANDLE hTimer );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CancelWaitableTimer( HANDLE hTimer )
+{
+    static FN_CancelWaitableTimer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CancelWaitableTimer", &g_Kernel32);
+    return pfn( hTimer );
+}
+
+typedef HANDLE WINAPI FN_CreateFileMappingA( HANDLE hFile, LPSECURITY_ATTRIBUTES lpFileMappingAttributes, DWORD flProtect, DWORD dwMaximumSizeHigh, DWORD dwMaximumSizeLow, LPCSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateFileMappingA( HANDLE hFile, LPSECURITY_ATTRIBUTES lpFileMappingAttributes, DWORD flProtect, DWORD dwMaximumSizeHigh, DWORD dwMaximumSizeLow, LPCSTR lpName )
+{
+    static FN_CreateFileMappingA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateFileMappingA", &g_Kernel32);
+    return pfn( hFile, lpFileMappingAttributes, flProtect, dwMaximumSizeHigh, dwMaximumSizeLow, lpName );
+}
+
+typedef HANDLE WINAPI FN_CreateFileMappingW( HANDLE hFile, LPSECURITY_ATTRIBUTES lpFileMappingAttributes, DWORD flProtect, DWORD dwMaximumSizeHigh, DWORD dwMaximumSizeLow, LPCWSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateFileMappingW( HANDLE hFile, LPSECURITY_ATTRIBUTES lpFileMappingAttributes, DWORD flProtect, DWORD dwMaximumSizeHigh, DWORD dwMaximumSizeLow, LPCWSTR lpName )
+{
+    static FN_CreateFileMappingW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateFileMappingW", &g_Kernel32);
+    return pfn( hFile, lpFileMappingAttributes, flProtect, dwMaximumSizeHigh, dwMaximumSizeLow, lpName );
+}
+
+typedef HANDLE WINAPI FN_OpenFileMappingA( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenFileMappingA( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName )
+{
+    static FN_OpenFileMappingA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenFileMappingA", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, lpName );
+}
+
+typedef HANDLE WINAPI FN_OpenFileMappingW( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenFileMappingW( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName )
+{
+    static FN_OpenFileMappingW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenFileMappingW", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, lpName );
+}
+
+typedef DWORD WINAPI FN_GetLogicalDriveStringsA( DWORD nBufferLength, LPSTR lpBuffer );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetLogicalDriveStringsA( DWORD nBufferLength, LPSTR lpBuffer )
+{
+    static FN_GetLogicalDriveStringsA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLogicalDriveStringsA", &g_Kernel32);
+    return pfn( nBufferLength, lpBuffer );
+}
+
+typedef DWORD WINAPI FN_GetLogicalDriveStringsW( DWORD nBufferLength, LPWSTR lpBuffer );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetLogicalDriveStringsW( DWORD nBufferLength, LPWSTR lpBuffer )
+{
+    static FN_GetLogicalDriveStringsW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLogicalDriveStringsW", &g_Kernel32);
+    return pfn( nBufferLength, lpBuffer );
+}
+
+typedef HANDLE WINAPI FN_CreateMemoryResourceNotification( MEMORY_RESOURCE_NOTIFICATION_TYPE NotificationType );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateMemoryResourceNotification( MEMORY_RESOURCE_NOTIFICATION_TYPE NotificationType )
+{
+    static FN_CreateMemoryResourceNotification *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateMemoryResourceNotification", &g_Kernel32);
+    return pfn( NotificationType );
+}
+
+typedef BOOL WINAPI FN_QueryMemoryResourceNotification( HANDLE ResourceNotificationHandle, PBOOL ResourceState );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_QueryMemoryResourceNotification( HANDLE ResourceNotificationHandle, PBOOL ResourceState )
+{
+    static FN_QueryMemoryResourceNotification *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "QueryMemoryResourceNotification", &g_Kernel32);
+    return pfn( ResourceNotificationHandle, ResourceState );
+}
+
+typedef HMODULE WINAPI FN_LoadLibraryA( LPCSTR lpLibFileName );
+__declspec(dllexport) HMODULE WINAPI kPrf2Wrap_LoadLibraryA( LPCSTR lpLibFileName )
+{
+    static FN_LoadLibraryA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LoadLibraryA", &g_Kernel32);
+    return pfn( lpLibFileName );
+}
+
+typedef HMODULE WINAPI FN_LoadLibraryW( LPCWSTR lpLibFileName );
+__declspec(dllexport) HMODULE WINAPI kPrf2Wrap_LoadLibraryW( LPCWSTR lpLibFileName )
+{
+    static FN_LoadLibraryW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LoadLibraryW", &g_Kernel32);
+    return pfn( lpLibFileName );
+}
+
+typedef HMODULE WINAPI FN_LoadLibraryExA( LPCSTR lpLibFileName, HANDLE hFile, DWORD dwFlags );
+__declspec(dllexport) HMODULE WINAPI kPrf2Wrap_LoadLibraryExA( LPCSTR lpLibFileName, HANDLE hFile, DWORD dwFlags )
+{
+    static FN_LoadLibraryExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LoadLibraryExA", &g_Kernel32);
+    return pfn( lpLibFileName, hFile, dwFlags );
+}
+
+typedef HMODULE WINAPI FN_LoadLibraryExW( LPCWSTR lpLibFileName, HANDLE hFile, DWORD dwFlags );
+__declspec(dllexport) HMODULE WINAPI kPrf2Wrap_LoadLibraryExW( LPCWSTR lpLibFileName, HANDLE hFile, DWORD dwFlags )
+{
+    static FN_LoadLibraryExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LoadLibraryExW", &g_Kernel32);
+    return pfn( lpLibFileName, hFile, dwFlags );
+}
+
+typedef DWORD WINAPI FN_GetModuleFileNameA( HMODULE hModule, LPCH lpFilename, DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetModuleFileNameA( HMODULE hModule, LPCH lpFilename, DWORD nSize )
+{
+    static FN_GetModuleFileNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetModuleFileNameA", &g_Kernel32);
+    return pfn( hModule, lpFilename, nSize );
+}
+
+typedef DWORD WINAPI FN_GetModuleFileNameW( HMODULE hModule, LPWCH lpFilename, DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetModuleFileNameW( HMODULE hModule, LPWCH lpFilename, DWORD nSize )
+{
+    static FN_GetModuleFileNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetModuleFileNameW", &g_Kernel32);
+    return pfn( hModule, lpFilename, nSize );
+}
+
+typedef HMODULE WINAPI FN_GetModuleHandleA( LPCSTR lpModuleName );
+__declspec(dllexport) HMODULE WINAPI kPrf2Wrap_GetModuleHandleA( LPCSTR lpModuleName )
+{
+    static FN_GetModuleHandleA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetModuleHandleA", &g_Kernel32);
+    return pfn( lpModuleName );
+}
+
+typedef HMODULE WINAPI FN_GetModuleHandleW( LPCWSTR lpModuleName );
+__declspec(dllexport) HMODULE WINAPI kPrf2Wrap_GetModuleHandleW( LPCWSTR lpModuleName )
+{
+    static FN_GetModuleHandleW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetModuleHandleW", &g_Kernel32);
+    return pfn( lpModuleName );
+}
+
+typedef BOOL WINAPI FN_GetModuleHandleExA( DWORD dwFlags, LPCSTR lpModuleName, HMODULE * phModule );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetModuleHandleExA( DWORD dwFlags, LPCSTR lpModuleName, HMODULE * phModule )
+{
+    static FN_GetModuleHandleExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetModuleHandleExA", &g_Kernel32);
+    return pfn( dwFlags, lpModuleName, phModule );
+}
+
+typedef BOOL WINAPI FN_GetModuleHandleExW( DWORD dwFlags, LPCWSTR lpModuleName, HMODULE * phModule );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetModuleHandleExW( DWORD dwFlags, LPCWSTR lpModuleName, HMODULE * phModule )
+{
+    static FN_GetModuleHandleExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetModuleHandleExW", &g_Kernel32);
+    return pfn( dwFlags, lpModuleName, phModule );
+}
+
+typedef BOOL WINAPI FN_NeedCurrentDirectoryForExePathA( LPCSTR ExeName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_NeedCurrentDirectoryForExePathA( LPCSTR ExeName )
+{
+    static FN_NeedCurrentDirectoryForExePathA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "NeedCurrentDirectoryForExePathA", &g_Kernel32);
+    return pfn( ExeName );
+}
+
+typedef BOOL WINAPI FN_NeedCurrentDirectoryForExePathW( LPCWSTR ExeName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_NeedCurrentDirectoryForExePathW( LPCWSTR ExeName )
+{
+    static FN_NeedCurrentDirectoryForExePathW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "NeedCurrentDirectoryForExePathW", &g_Kernel32);
+    return pfn( ExeName );
+}
+
+typedef BOOL WINAPI FN_CreateProcessA( LPCSTR lpApplicationName, LPSTR lpCommandLine, LPSECURITY_ATTRIBUTES lpProcessAttributes, LPSECURITY_ATTRIBUTES lpThreadAttributes, BOOL bInheritHandles, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCSTR lpCurrentDirectory, LPSTARTUPINFOA lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateProcessA( LPCSTR lpApplicationName, LPSTR lpCommandLine, LPSECURITY_ATTRIBUTES lpProcessAttributes, LPSECURITY_ATTRIBUTES lpThreadAttributes, BOOL bInheritHandles, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCSTR lpCurrentDirectory, LPSTARTUPINFOA lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation )
+{
+    static FN_CreateProcessA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateProcessA", &g_Kernel32);
+    return pfn( lpApplicationName, lpCommandLine, lpProcessAttributes, lpThreadAttributes, bInheritHandles, dwCreationFlags, lpEnvironment, lpCurrentDirectory, lpStartupInfo, lpProcessInformation );
+}
+
+typedef BOOL WINAPI FN_CreateProcessW( LPCWSTR lpApplicationName, LPWSTR lpCommandLine, LPSECURITY_ATTRIBUTES lpProcessAttributes, LPSECURITY_ATTRIBUTES lpThreadAttributes, BOOL bInheritHandles, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCWSTR lpCurrentDirectory, LPSTARTUPINFOW lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateProcessW( LPCWSTR lpApplicationName, LPWSTR lpCommandLine, LPSECURITY_ATTRIBUTES lpProcessAttributes, LPSECURITY_ATTRIBUTES lpThreadAttributes, BOOL bInheritHandles, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCWSTR lpCurrentDirectory, LPSTARTUPINFOW lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation )
+{
+    static FN_CreateProcessW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateProcessW", &g_Kernel32);
+    return pfn( lpApplicationName, lpCommandLine, lpProcessAttributes, lpThreadAttributes, bInheritHandles, dwCreationFlags, lpEnvironment, lpCurrentDirectory, lpStartupInfo, lpProcessInformation );
+}
+
+typedef BOOL WINAPI FN_SetProcessShutdownParameters( DWORD dwLevel, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetProcessShutdownParameters( DWORD dwLevel, DWORD dwFlags )
+{
+    static FN_SetProcessShutdownParameters *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetProcessShutdownParameters", &g_Kernel32);
+    return pfn( dwLevel, dwFlags );
+}
+
+typedef BOOL WINAPI FN_GetProcessShutdownParameters( LPDWORD lpdwLevel, LPDWORD lpdwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetProcessShutdownParameters( LPDWORD lpdwLevel, LPDWORD lpdwFlags )
+{
+    static FN_GetProcessShutdownParameters *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessShutdownParameters", &g_Kernel32);
+    return pfn( lpdwLevel, lpdwFlags );
+}
+
+typedef DWORD WINAPI FN_GetProcessVersion( DWORD ProcessId );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetProcessVersion( DWORD ProcessId )
+{
+    static FN_GetProcessVersion *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProcessVersion", &g_Kernel32);
+    return pfn( ProcessId );
+}
+
+typedef VOID WINAPI FN_FatalAppExitA( UINT uAction, LPCSTR lpMessageText );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_FatalAppExitA( UINT uAction, LPCSTR lpMessageText )
+{
+    static FN_FatalAppExitA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FatalAppExitA", &g_Kernel32);
+    pfn( uAction, lpMessageText );
+}
+
+typedef VOID WINAPI FN_FatalAppExitW( UINT uAction, LPCWSTR lpMessageText );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_FatalAppExitW( UINT uAction, LPCWSTR lpMessageText )
+{
+    static FN_FatalAppExitW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FatalAppExitW", &g_Kernel32);
+    pfn( uAction, lpMessageText );
+}
+
+typedef VOID WINAPI FN_GetStartupInfoA( LPSTARTUPINFOA lpStartupInfo );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_GetStartupInfoA( LPSTARTUPINFOA lpStartupInfo )
+{
+    static FN_GetStartupInfoA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetStartupInfoA", &g_Kernel32);
+    pfn( lpStartupInfo );
+}
+
+typedef VOID WINAPI FN_GetStartupInfoW( LPSTARTUPINFOW lpStartupInfo );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_GetStartupInfoW( LPSTARTUPINFOW lpStartupInfo )
+{
+    static FN_GetStartupInfoW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetStartupInfoW", &g_Kernel32);
+    pfn( lpStartupInfo );
+}
+
+typedef LPSTR WINAPI FN_GetCommandLineA( VOID );
+__declspec(dllexport) LPSTR WINAPI kPrf2Wrap_GetCommandLineA( VOID )
+{
+    static FN_GetCommandLineA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCommandLineA", &g_Kernel32);
+    return pfn ();
+}
+
+typedef LPWSTR WINAPI FN_GetCommandLineW( VOID );
+__declspec(dllexport) LPWSTR WINAPI kPrf2Wrap_GetCommandLineW( VOID )
+{
+    static FN_GetCommandLineW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCommandLineW", &g_Kernel32);
+    return pfn ();
+}
+
+typedef DWORD WINAPI FN_GetEnvironmentVariableA( LPCSTR lpName, LPSTR lpBuffer, DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetEnvironmentVariableA( LPCSTR lpName, LPSTR lpBuffer, DWORD nSize )
+{
+    static FN_GetEnvironmentVariableA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetEnvironmentVariableA", &g_Kernel32);
+    return pfn( lpName, lpBuffer, nSize );
+}
+
+typedef DWORD WINAPI FN_GetEnvironmentVariableW( LPCWSTR lpName, LPWSTR lpBuffer, DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetEnvironmentVariableW( LPCWSTR lpName, LPWSTR lpBuffer, DWORD nSize )
+{
+    static FN_GetEnvironmentVariableW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetEnvironmentVariableW", &g_Kernel32);
+    return pfn( lpName, lpBuffer, nSize );
+}
+
+typedef BOOL WINAPI FN_SetEnvironmentVariableA( LPCSTR lpName, LPCSTR lpValue );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetEnvironmentVariableA( LPCSTR lpName, LPCSTR lpValue )
+{
+    static FN_SetEnvironmentVariableA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetEnvironmentVariableA", &g_Kernel32);
+    return pfn( lpName, lpValue );
+}
+
+typedef BOOL WINAPI FN_SetEnvironmentVariableW( LPCWSTR lpName, LPCWSTR lpValue );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetEnvironmentVariableW( LPCWSTR lpName, LPCWSTR lpValue )
+{
+    static FN_SetEnvironmentVariableW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetEnvironmentVariableW", &g_Kernel32);
+    return pfn( lpName, lpValue );
+}
+
+typedef DWORD WINAPI FN_ExpandEnvironmentStringsA( LPCSTR lpSrc, LPSTR lpDst, DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_ExpandEnvironmentStringsA( LPCSTR lpSrc, LPSTR lpDst, DWORD nSize )
+{
+    static FN_ExpandEnvironmentStringsA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ExpandEnvironmentStringsA", &g_Kernel32);
+    return pfn( lpSrc, lpDst, nSize );
+}
+
+typedef DWORD WINAPI FN_ExpandEnvironmentStringsW( LPCWSTR lpSrc, LPWSTR lpDst, DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_ExpandEnvironmentStringsW( LPCWSTR lpSrc, LPWSTR lpDst, DWORD nSize )
+{
+    static FN_ExpandEnvironmentStringsW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ExpandEnvironmentStringsW", &g_Kernel32);
+    return pfn( lpSrc, lpDst, nSize );
+}
+
+typedef DWORD WINAPI FN_GetFirmwareEnvironmentVariableA( LPCSTR lpName, LPCSTR lpGuid, PVOID pBuffer, DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetFirmwareEnvironmentVariableA( LPCSTR lpName, LPCSTR lpGuid, PVOID pBuffer, DWORD nSize )
+{
+    static FN_GetFirmwareEnvironmentVariableA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFirmwareEnvironmentVariableA", &g_Kernel32);
+    return pfn( lpName, lpGuid, pBuffer, nSize );
+}
+
+typedef DWORD WINAPI FN_GetFirmwareEnvironmentVariableW( LPCWSTR lpName, LPCWSTR lpGuid, PVOID pBuffer, DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetFirmwareEnvironmentVariableW( LPCWSTR lpName, LPCWSTR lpGuid, PVOID pBuffer, DWORD nSize )
+{
+    static FN_GetFirmwareEnvironmentVariableW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFirmwareEnvironmentVariableW", &g_Kernel32);
+    return pfn( lpName, lpGuid, pBuffer, nSize );
+}
+
+typedef BOOL WINAPI FN_SetFirmwareEnvironmentVariableA( LPCSTR lpName, LPCSTR lpGuid, PVOID pValue, DWORD nSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetFirmwareEnvironmentVariableA( LPCSTR lpName, LPCSTR lpGuid, PVOID pValue, DWORD nSize )
+{
+    static FN_SetFirmwareEnvironmentVariableA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFirmwareEnvironmentVariableA", &g_Kernel32);
+    return pfn( lpName, lpGuid, pValue, nSize );
+}
+
+typedef BOOL WINAPI FN_SetFirmwareEnvironmentVariableW( LPCWSTR lpName, LPCWSTR lpGuid, PVOID pValue, DWORD nSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetFirmwareEnvironmentVariableW( LPCWSTR lpName, LPCWSTR lpGuid, PVOID pValue, DWORD nSize )
+{
+    static FN_SetFirmwareEnvironmentVariableW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFirmwareEnvironmentVariableW", &g_Kernel32);
+    return pfn( lpName, lpGuid, pValue, nSize );
+}
+
+typedef VOID WINAPI FN_OutputDebugStringA( LPCSTR lpOutputString );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_OutputDebugStringA( LPCSTR lpOutputString )
+{
+    static FN_OutputDebugStringA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OutputDebugStringA", &g_Kernel32);
+    pfn( lpOutputString );
+}
+
+typedef VOID WINAPI FN_OutputDebugStringW( LPCWSTR lpOutputString );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_OutputDebugStringW( LPCWSTR lpOutputString )
+{
+    static FN_OutputDebugStringW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OutputDebugStringW", &g_Kernel32);
+    pfn( lpOutputString );
+}
+
+typedef HRSRC WINAPI FN_FindResourceA( HMODULE hModule, LPCSTR lpName, LPCSTR lpType );
+__declspec(dllexport) HRSRC WINAPI kPrf2Wrap_FindResourceA( HMODULE hModule, LPCSTR lpName, LPCSTR lpType )
+{
+    static FN_FindResourceA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindResourceA", &g_Kernel32);
+    return pfn( hModule, lpName, lpType );
+}
+
+typedef HRSRC WINAPI FN_FindResourceW( HMODULE hModule, LPCWSTR lpName, LPCWSTR lpType );
+__declspec(dllexport) HRSRC WINAPI kPrf2Wrap_FindResourceW( HMODULE hModule, LPCWSTR lpName, LPCWSTR lpType )
+{
+    static FN_FindResourceW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindResourceW", &g_Kernel32);
+    return pfn( hModule, lpName, lpType );
+}
+
+typedef HRSRC WINAPI FN_FindResourceExA( HMODULE hModule, LPCSTR lpType, LPCSTR lpName, WORD wLanguage );
+__declspec(dllexport) HRSRC WINAPI kPrf2Wrap_FindResourceExA( HMODULE hModule, LPCSTR lpType, LPCSTR lpName, WORD wLanguage )
+{
+    static FN_FindResourceExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindResourceExA", &g_Kernel32);
+    return pfn( hModule, lpType, lpName, wLanguage );
+}
+
+typedef HRSRC WINAPI FN_FindResourceExW( HMODULE hModule, LPCWSTR lpType, LPCWSTR lpName, WORD wLanguage );
+__declspec(dllexport) HRSRC WINAPI kPrf2Wrap_FindResourceExW( HMODULE hModule, LPCWSTR lpType, LPCWSTR lpName, WORD wLanguage )
+{
+    static FN_FindResourceExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindResourceExW", &g_Kernel32);
+    return pfn( hModule, lpType, lpName, wLanguage );
+}
+
+typedef BOOL WINAPI FN_EnumResourceTypesA( HMODULE hModule, ENUMRESTYPEPROCA lpEnumFunc, LONG_PTR lParam );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumResourceTypesA( HMODULE hModule, ENUMRESTYPEPROCA lpEnumFunc, LONG_PTR lParam )
+{
+    static FN_EnumResourceTypesA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumResourceTypesA", &g_Kernel32);
+    return pfn( hModule, lpEnumFunc, lParam );
+}
+
+typedef BOOL WINAPI FN_EnumResourceTypesW( HMODULE hModule, ENUMRESTYPEPROCW lpEnumFunc, LONG_PTR lParam );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumResourceTypesW( HMODULE hModule, ENUMRESTYPEPROCW lpEnumFunc, LONG_PTR lParam )
+{
+    static FN_EnumResourceTypesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumResourceTypesW", &g_Kernel32);
+    return pfn( hModule, lpEnumFunc, lParam );
+}
+
+typedef BOOL WINAPI FN_EnumResourceNamesA( HMODULE hModule, LPCSTR lpType, ENUMRESNAMEPROCA lpEnumFunc, LONG_PTR lParam );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumResourceNamesA( HMODULE hModule, LPCSTR lpType, ENUMRESNAMEPROCA lpEnumFunc, LONG_PTR lParam )
+{
+    static FN_EnumResourceNamesA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumResourceNamesA", &g_Kernel32);
+    return pfn( hModule, lpType, lpEnumFunc, lParam );
+}
+
+typedef BOOL WINAPI FN_EnumResourceNamesW( HMODULE hModule, LPCWSTR lpType, ENUMRESNAMEPROCW lpEnumFunc, LONG_PTR lParam );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumResourceNamesW( HMODULE hModule, LPCWSTR lpType, ENUMRESNAMEPROCW lpEnumFunc, LONG_PTR lParam )
+{
+    static FN_EnumResourceNamesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumResourceNamesW", &g_Kernel32);
+    return pfn( hModule, lpType, lpEnumFunc, lParam );
+}
+
+typedef BOOL WINAPI FN_EnumResourceLanguagesA( HMODULE hModule, LPCSTR lpType, LPCSTR lpName, ENUMRESLANGPROCA lpEnumFunc, LONG_PTR lParam );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumResourceLanguagesA( HMODULE hModule, LPCSTR lpType, LPCSTR lpName, ENUMRESLANGPROCA lpEnumFunc, LONG_PTR lParam )
+{
+    static FN_EnumResourceLanguagesA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumResourceLanguagesA", &g_Kernel32);
+    return pfn( hModule, lpType, lpName, lpEnumFunc, lParam );
+}
+
+typedef BOOL WINAPI FN_EnumResourceLanguagesW( HMODULE hModule, LPCWSTR lpType, LPCWSTR lpName, ENUMRESLANGPROCW lpEnumFunc, LONG_PTR lParam );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumResourceLanguagesW( HMODULE hModule, LPCWSTR lpType, LPCWSTR lpName, ENUMRESLANGPROCW lpEnumFunc, LONG_PTR lParam )
+{
+    static FN_EnumResourceLanguagesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumResourceLanguagesW", &g_Kernel32);
+    return pfn( hModule, lpType, lpName, lpEnumFunc, lParam );
+}
+
+typedef HANDLE WINAPI FN_BeginUpdateResourceA( LPCSTR pFileName, BOOL bDeleteExistingResources );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_BeginUpdateResourceA( LPCSTR pFileName, BOOL bDeleteExistingResources )
+{
+    static FN_BeginUpdateResourceA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "BeginUpdateResourceA", &g_Kernel32);
+    return pfn( pFileName, bDeleteExistingResources );
+}
+
+typedef HANDLE WINAPI FN_BeginUpdateResourceW( LPCWSTR pFileName, BOOL bDeleteExistingResources );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_BeginUpdateResourceW( LPCWSTR pFileName, BOOL bDeleteExistingResources )
+{
+    static FN_BeginUpdateResourceW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "BeginUpdateResourceW", &g_Kernel32);
+    return pfn( pFileName, bDeleteExistingResources );
+}
+
+typedef BOOL WINAPI FN_UpdateResourceA( HANDLE hUpdate, LPCSTR lpType, LPCSTR lpName, WORD wLanguage, LPVOID lpData, DWORD cb );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_UpdateResourceA( HANDLE hUpdate, LPCSTR lpType, LPCSTR lpName, WORD wLanguage, LPVOID lpData, DWORD cb )
+{
+    static FN_UpdateResourceA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "UpdateResourceA", &g_Kernel32);
+    return pfn( hUpdate, lpType, lpName, wLanguage, lpData, cb );
+}
+
+typedef BOOL WINAPI FN_UpdateResourceW( HANDLE hUpdate, LPCWSTR lpType, LPCWSTR lpName, WORD wLanguage, LPVOID lpData, DWORD cb );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_UpdateResourceW( HANDLE hUpdate, LPCWSTR lpType, LPCWSTR lpName, WORD wLanguage, LPVOID lpData, DWORD cb )
+{
+    static FN_UpdateResourceW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "UpdateResourceW", &g_Kernel32);
+    return pfn( hUpdate, lpType, lpName, wLanguage, lpData, cb );
+}
+
+typedef BOOL WINAPI FN_EndUpdateResourceA( HANDLE hUpdate, BOOL fDiscard );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EndUpdateResourceA( HANDLE hUpdate, BOOL fDiscard )
+{
+    static FN_EndUpdateResourceA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EndUpdateResourceA", &g_Kernel32);
+    return pfn( hUpdate, fDiscard );
+}
+
+typedef BOOL WINAPI FN_EndUpdateResourceW( HANDLE hUpdate, BOOL fDiscard );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EndUpdateResourceW( HANDLE hUpdate, BOOL fDiscard )
+{
+    static FN_EndUpdateResourceW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EndUpdateResourceW", &g_Kernel32);
+    return pfn( hUpdate, fDiscard );
+}
+
+typedef ATOM WINAPI FN_GlobalAddAtomA( LPCSTR lpString );
+__declspec(dllexport) ATOM WINAPI kPrf2Wrap_GlobalAddAtomA( LPCSTR lpString )
+{
+    static FN_GlobalAddAtomA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalAddAtomA", &g_Kernel32);
+    return pfn( lpString );
+}
+
+typedef ATOM WINAPI FN_GlobalAddAtomW( LPCWSTR lpString );
+__declspec(dllexport) ATOM WINAPI kPrf2Wrap_GlobalAddAtomW( LPCWSTR lpString )
+{
+    static FN_GlobalAddAtomW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalAddAtomW", &g_Kernel32);
+    return pfn( lpString );
+}
+
+typedef ATOM WINAPI FN_GlobalFindAtomA( LPCSTR lpString );
+__declspec(dllexport) ATOM WINAPI kPrf2Wrap_GlobalFindAtomA( LPCSTR lpString )
+{
+    static FN_GlobalFindAtomA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalFindAtomA", &g_Kernel32);
+    return pfn( lpString );
+}
+
+typedef ATOM WINAPI FN_GlobalFindAtomW( LPCWSTR lpString );
+__declspec(dllexport) ATOM WINAPI kPrf2Wrap_GlobalFindAtomW( LPCWSTR lpString )
+{
+    static FN_GlobalFindAtomW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalFindAtomW", &g_Kernel32);
+    return pfn( lpString );
+}
+
+typedef UINT WINAPI FN_GlobalGetAtomNameA( ATOM nAtom, LPSTR lpBuffer, int nSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GlobalGetAtomNameA( ATOM nAtom, LPSTR lpBuffer, int nSize )
+{
+    static FN_GlobalGetAtomNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalGetAtomNameA", &g_Kernel32);
+    return pfn( nAtom, lpBuffer, nSize );
+}
+
+typedef UINT WINAPI FN_GlobalGetAtomNameW( ATOM nAtom, LPWSTR lpBuffer, int nSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GlobalGetAtomNameW( ATOM nAtom, LPWSTR lpBuffer, int nSize )
+{
+    static FN_GlobalGetAtomNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GlobalGetAtomNameW", &g_Kernel32);
+    return pfn( nAtom, lpBuffer, nSize );
+}
+
+typedef ATOM WINAPI FN_AddAtomA( LPCSTR lpString );
+__declspec(dllexport) ATOM WINAPI kPrf2Wrap_AddAtomA( LPCSTR lpString )
+{
+    static FN_AddAtomA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddAtomA", &g_Kernel32);
+    return pfn( lpString );
+}
+
+typedef ATOM WINAPI FN_AddAtomW( LPCWSTR lpString );
+__declspec(dllexport) ATOM WINAPI kPrf2Wrap_AddAtomW( LPCWSTR lpString )
+{
+    static FN_AddAtomW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddAtomW", &g_Kernel32);
+    return pfn( lpString );
+}
+
+typedef ATOM WINAPI FN_FindAtomA( LPCSTR lpString );
+__declspec(dllexport) ATOM WINAPI kPrf2Wrap_FindAtomA( LPCSTR lpString )
+{
+    static FN_FindAtomA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindAtomA", &g_Kernel32);
+    return pfn( lpString );
+}
+
+typedef ATOM WINAPI FN_FindAtomW( LPCWSTR lpString );
+__declspec(dllexport) ATOM WINAPI kPrf2Wrap_FindAtomW( LPCWSTR lpString )
+{
+    static FN_FindAtomW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindAtomW", &g_Kernel32);
+    return pfn( lpString );
+}
+
+typedef UINT WINAPI FN_GetAtomNameA( ATOM nAtom, LPSTR lpBuffer, int nSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetAtomNameA( ATOM nAtom, LPSTR lpBuffer, int nSize )
+{
+    static FN_GetAtomNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetAtomNameA", &g_Kernel32);
+    return pfn( nAtom, lpBuffer, nSize );
+}
+
+typedef UINT WINAPI FN_GetAtomNameW( ATOM nAtom, LPWSTR lpBuffer, int nSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetAtomNameW( ATOM nAtom, LPWSTR lpBuffer, int nSize )
+{
+    static FN_GetAtomNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetAtomNameW", &g_Kernel32);
+    return pfn( nAtom, lpBuffer, nSize );
+}
+
+typedef UINT WINAPI FN_GetProfileIntA( LPCSTR lpAppName, LPCSTR lpKeyName, INT nDefault );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetProfileIntA( LPCSTR lpAppName, LPCSTR lpKeyName, INT nDefault )
+{
+    static FN_GetProfileIntA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProfileIntA", &g_Kernel32);
+    return pfn( lpAppName, lpKeyName, nDefault );
+}
+
+typedef UINT WINAPI FN_GetProfileIntW( LPCWSTR lpAppName, LPCWSTR lpKeyName, INT nDefault );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetProfileIntW( LPCWSTR lpAppName, LPCWSTR lpKeyName, INT nDefault )
+{
+    static FN_GetProfileIntW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProfileIntW", &g_Kernel32);
+    return pfn( lpAppName, lpKeyName, nDefault );
+}
+
+typedef DWORD WINAPI FN_GetProfileStringA( LPCSTR lpAppName, LPCSTR lpKeyName, LPCSTR lpDefault, LPSTR lpReturnedString, DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetProfileStringA( LPCSTR lpAppName, LPCSTR lpKeyName, LPCSTR lpDefault, LPSTR lpReturnedString, DWORD nSize )
+{
+    static FN_GetProfileStringA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProfileStringA", &g_Kernel32);
+    return pfn( lpAppName, lpKeyName, lpDefault, lpReturnedString, nSize );
+}
+
+typedef DWORD WINAPI FN_GetProfileStringW( LPCWSTR lpAppName, LPCWSTR lpKeyName, LPCWSTR lpDefault, LPWSTR lpReturnedString, DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetProfileStringW( LPCWSTR lpAppName, LPCWSTR lpKeyName, LPCWSTR lpDefault, LPWSTR lpReturnedString, DWORD nSize )
+{
+    static FN_GetProfileStringW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProfileStringW", &g_Kernel32);
+    return pfn( lpAppName, lpKeyName, lpDefault, lpReturnedString, nSize );
+}
+
+typedef BOOL WINAPI FN_WriteProfileStringA( LPCSTR lpAppName, LPCSTR lpKeyName, LPCSTR lpString );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteProfileStringA( LPCSTR lpAppName, LPCSTR lpKeyName, LPCSTR lpString )
+{
+    static FN_WriteProfileStringA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteProfileStringA", &g_Kernel32);
+    return pfn( lpAppName, lpKeyName, lpString );
+}
+
+typedef BOOL WINAPI FN_WriteProfileStringW( LPCWSTR lpAppName, LPCWSTR lpKeyName, LPCWSTR lpString );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteProfileStringW( LPCWSTR lpAppName, LPCWSTR lpKeyName, LPCWSTR lpString )
+{
+    static FN_WriteProfileStringW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteProfileStringW", &g_Kernel32);
+    return pfn( lpAppName, lpKeyName, lpString );
+}
+
+typedef DWORD WINAPI FN_GetProfileSectionA( LPCSTR lpAppName, LPSTR lpReturnedString, DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetProfileSectionA( LPCSTR lpAppName, LPSTR lpReturnedString, DWORD nSize )
+{
+    static FN_GetProfileSectionA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProfileSectionA", &g_Kernel32);
+    return pfn( lpAppName, lpReturnedString, nSize );
+}
+
+typedef DWORD WINAPI FN_GetProfileSectionW( LPCWSTR lpAppName, LPWSTR lpReturnedString, DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetProfileSectionW( LPCWSTR lpAppName, LPWSTR lpReturnedString, DWORD nSize )
+{
+    static FN_GetProfileSectionW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetProfileSectionW", &g_Kernel32);
+    return pfn( lpAppName, lpReturnedString, nSize );
+}
+
+typedef BOOL WINAPI FN_WriteProfileSectionA( LPCSTR lpAppName, LPCSTR lpString );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteProfileSectionA( LPCSTR lpAppName, LPCSTR lpString )
+{
+    static FN_WriteProfileSectionA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteProfileSectionA", &g_Kernel32);
+    return pfn( lpAppName, lpString );
+}
+
+typedef BOOL WINAPI FN_WriteProfileSectionW( LPCWSTR lpAppName, LPCWSTR lpString );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteProfileSectionW( LPCWSTR lpAppName, LPCWSTR lpString )
+{
+    static FN_WriteProfileSectionW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteProfileSectionW", &g_Kernel32);
+    return pfn( lpAppName, lpString );
+}
+
+typedef UINT WINAPI FN_GetPrivateProfileIntA( LPCSTR lpAppName, LPCSTR lpKeyName, INT nDefault, LPCSTR lpFileName );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetPrivateProfileIntA( LPCSTR lpAppName, LPCSTR lpKeyName, INT nDefault, LPCSTR lpFileName )
+{
+    static FN_GetPrivateProfileIntA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetPrivateProfileIntA", &g_Kernel32);
+    return pfn( lpAppName, lpKeyName, nDefault, lpFileName );
+}
+
+typedef UINT WINAPI FN_GetPrivateProfileIntW( LPCWSTR lpAppName, LPCWSTR lpKeyName, INT nDefault, LPCWSTR lpFileName );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetPrivateProfileIntW( LPCWSTR lpAppName, LPCWSTR lpKeyName, INT nDefault, LPCWSTR lpFileName )
+{
+    static FN_GetPrivateProfileIntW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetPrivateProfileIntW", &g_Kernel32);
+    return pfn( lpAppName, lpKeyName, nDefault, lpFileName );
+}
+
+typedef DWORD WINAPI FN_GetPrivateProfileStringA( LPCSTR lpAppName, LPCSTR lpKeyName, LPCSTR lpDefault, LPSTR lpReturnedString, DWORD nSize, LPCSTR lpFileName );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetPrivateProfileStringA( LPCSTR lpAppName, LPCSTR lpKeyName, LPCSTR lpDefault, LPSTR lpReturnedString, DWORD nSize, LPCSTR lpFileName )
+{
+    static FN_GetPrivateProfileStringA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetPrivateProfileStringA", &g_Kernel32);
+    return pfn( lpAppName, lpKeyName, lpDefault, lpReturnedString, nSize, lpFileName );
+}
+
+typedef DWORD WINAPI FN_GetPrivateProfileStringW( LPCWSTR lpAppName, LPCWSTR lpKeyName, LPCWSTR lpDefault, LPWSTR lpReturnedString, DWORD nSize, LPCWSTR lpFileName );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetPrivateProfileStringW( LPCWSTR lpAppName, LPCWSTR lpKeyName, LPCWSTR lpDefault, LPWSTR lpReturnedString, DWORD nSize, LPCWSTR lpFileName )
+{
+    static FN_GetPrivateProfileStringW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetPrivateProfileStringW", &g_Kernel32);
+    return pfn( lpAppName, lpKeyName, lpDefault, lpReturnedString, nSize, lpFileName );
+}
+
+typedef BOOL WINAPI FN_WritePrivateProfileStringA( LPCSTR lpAppName, LPCSTR lpKeyName, LPCSTR lpString, LPCSTR lpFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WritePrivateProfileStringA( LPCSTR lpAppName, LPCSTR lpKeyName, LPCSTR lpString, LPCSTR lpFileName )
+{
+    static FN_WritePrivateProfileStringA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WritePrivateProfileStringA", &g_Kernel32);
+    return pfn( lpAppName, lpKeyName, lpString, lpFileName );
+}
+
+typedef BOOL WINAPI FN_WritePrivateProfileStringW( LPCWSTR lpAppName, LPCWSTR lpKeyName, LPCWSTR lpString, LPCWSTR lpFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WritePrivateProfileStringW( LPCWSTR lpAppName, LPCWSTR lpKeyName, LPCWSTR lpString, LPCWSTR lpFileName )
+{
+    static FN_WritePrivateProfileStringW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WritePrivateProfileStringW", &g_Kernel32);
+    return pfn( lpAppName, lpKeyName, lpString, lpFileName );
+}
+
+typedef DWORD WINAPI FN_GetPrivateProfileSectionA( LPCSTR lpAppName, LPSTR lpReturnedString, DWORD nSize, LPCSTR lpFileName );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetPrivateProfileSectionA( LPCSTR lpAppName, LPSTR lpReturnedString, DWORD nSize, LPCSTR lpFileName )
+{
+    static FN_GetPrivateProfileSectionA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetPrivateProfileSectionA", &g_Kernel32);
+    return pfn( lpAppName, lpReturnedString, nSize, lpFileName );
+}
+
+typedef DWORD WINAPI FN_GetPrivateProfileSectionW( LPCWSTR lpAppName, LPWSTR lpReturnedString, DWORD nSize, LPCWSTR lpFileName );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetPrivateProfileSectionW( LPCWSTR lpAppName, LPWSTR lpReturnedString, DWORD nSize, LPCWSTR lpFileName )
+{
+    static FN_GetPrivateProfileSectionW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetPrivateProfileSectionW", &g_Kernel32);
+    return pfn( lpAppName, lpReturnedString, nSize, lpFileName );
+}
+
+typedef BOOL WINAPI FN_WritePrivateProfileSectionA( LPCSTR lpAppName, LPCSTR lpString, LPCSTR lpFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WritePrivateProfileSectionA( LPCSTR lpAppName, LPCSTR lpString, LPCSTR lpFileName )
+{
+    static FN_WritePrivateProfileSectionA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WritePrivateProfileSectionA", &g_Kernel32);
+    return pfn( lpAppName, lpString, lpFileName );
+}
+
+typedef BOOL WINAPI FN_WritePrivateProfileSectionW( LPCWSTR lpAppName, LPCWSTR lpString, LPCWSTR lpFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WritePrivateProfileSectionW( LPCWSTR lpAppName, LPCWSTR lpString, LPCWSTR lpFileName )
+{
+    static FN_WritePrivateProfileSectionW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WritePrivateProfileSectionW", &g_Kernel32);
+    return pfn( lpAppName, lpString, lpFileName );
+}
+
+typedef DWORD WINAPI FN_GetPrivateProfileSectionNamesA( LPSTR lpszReturnBuffer, DWORD nSize, LPCSTR lpFileName );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetPrivateProfileSectionNamesA( LPSTR lpszReturnBuffer, DWORD nSize, LPCSTR lpFileName )
+{
+    static FN_GetPrivateProfileSectionNamesA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetPrivateProfileSectionNamesA", &g_Kernel32);
+    return pfn( lpszReturnBuffer, nSize, lpFileName );
+}
+
+typedef DWORD WINAPI FN_GetPrivateProfileSectionNamesW( LPWSTR lpszReturnBuffer, DWORD nSize, LPCWSTR lpFileName );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetPrivateProfileSectionNamesW( LPWSTR lpszReturnBuffer, DWORD nSize, LPCWSTR lpFileName )
+{
+    static FN_GetPrivateProfileSectionNamesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetPrivateProfileSectionNamesW", &g_Kernel32);
+    return pfn( lpszReturnBuffer, nSize, lpFileName );
+}
+
+typedef BOOL WINAPI FN_GetPrivateProfileStructA( LPCSTR lpszSection, LPCSTR lpszKey, LPVOID lpStruct, UINT uSizeStruct, LPCSTR szFile );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetPrivateProfileStructA( LPCSTR lpszSection, LPCSTR lpszKey, LPVOID lpStruct, UINT uSizeStruct, LPCSTR szFile )
+{
+    static FN_GetPrivateProfileStructA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetPrivateProfileStructA", &g_Kernel32);
+    return pfn( lpszSection, lpszKey, lpStruct, uSizeStruct, szFile );
+}
+
+typedef BOOL WINAPI FN_GetPrivateProfileStructW( LPCWSTR lpszSection, LPCWSTR lpszKey, LPVOID lpStruct, UINT uSizeStruct, LPCWSTR szFile );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetPrivateProfileStructW( LPCWSTR lpszSection, LPCWSTR lpszKey, LPVOID lpStruct, UINT uSizeStruct, LPCWSTR szFile )
+{
+    static FN_GetPrivateProfileStructW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetPrivateProfileStructW", &g_Kernel32);
+    return pfn( lpszSection, lpszKey, lpStruct, uSizeStruct, szFile );
+}
+
+typedef BOOL WINAPI FN_WritePrivateProfileStructA( LPCSTR lpszSection, LPCSTR lpszKey, LPVOID lpStruct, UINT uSizeStruct, LPCSTR szFile );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WritePrivateProfileStructA( LPCSTR lpszSection, LPCSTR lpszKey, LPVOID lpStruct, UINT uSizeStruct, LPCSTR szFile )
+{
+    static FN_WritePrivateProfileStructA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WritePrivateProfileStructA", &g_Kernel32);
+    return pfn( lpszSection, lpszKey, lpStruct, uSizeStruct, szFile );
+}
+
+typedef BOOL WINAPI FN_WritePrivateProfileStructW( LPCWSTR lpszSection, LPCWSTR lpszKey, LPVOID lpStruct, UINT uSizeStruct, LPCWSTR szFile );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WritePrivateProfileStructW( LPCWSTR lpszSection, LPCWSTR lpszKey, LPVOID lpStruct, UINT uSizeStruct, LPCWSTR szFile )
+{
+    static FN_WritePrivateProfileStructW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WritePrivateProfileStructW", &g_Kernel32);
+    return pfn( lpszSection, lpszKey, lpStruct, uSizeStruct, szFile );
+}
+
+typedef UINT WINAPI FN_GetDriveTypeA( LPCSTR lpRootPathName );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetDriveTypeA( LPCSTR lpRootPathName )
+{
+    static FN_GetDriveTypeA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDriveTypeA", &g_Kernel32);
+    return pfn( lpRootPathName );
+}
+
+typedef UINT WINAPI FN_GetDriveTypeW( LPCWSTR lpRootPathName );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetDriveTypeW( LPCWSTR lpRootPathName )
+{
+    static FN_GetDriveTypeW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDriveTypeW", &g_Kernel32);
+    return pfn( lpRootPathName );
+}
+
+typedef UINT WINAPI FN_GetSystemDirectoryA( LPSTR lpBuffer, UINT uSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetSystemDirectoryA( LPSTR lpBuffer, UINT uSize )
+{
+    static FN_GetSystemDirectoryA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemDirectoryA", &g_Kernel32);
+    return pfn( lpBuffer, uSize );
+}
+
+typedef UINT WINAPI FN_GetSystemDirectoryW( LPWSTR lpBuffer, UINT uSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetSystemDirectoryW( LPWSTR lpBuffer, UINT uSize )
+{
+    static FN_GetSystemDirectoryW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemDirectoryW", &g_Kernel32);
+    return pfn( lpBuffer, uSize );
+}
+
+typedef DWORD WINAPI FN_GetTempPathA( DWORD nBufferLength, LPSTR lpBuffer );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetTempPathA( DWORD nBufferLength, LPSTR lpBuffer )
+{
+    static FN_GetTempPathA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetTempPathA", &g_Kernel32);
+    return pfn( nBufferLength, lpBuffer );
+}
+
+typedef DWORD WINAPI FN_GetTempPathW( DWORD nBufferLength, LPWSTR lpBuffer );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetTempPathW( DWORD nBufferLength, LPWSTR lpBuffer )
+{
+    static FN_GetTempPathW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetTempPathW", &g_Kernel32);
+    return pfn( nBufferLength, lpBuffer );
+}
+
+typedef UINT WINAPI FN_GetTempFileNameA( LPCSTR lpPathName, LPCSTR lpPrefixString, UINT uUnique, LPSTR lpTempFileName );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetTempFileNameA( LPCSTR lpPathName, LPCSTR lpPrefixString, UINT uUnique, LPSTR lpTempFileName )
+{
+    static FN_GetTempFileNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetTempFileNameA", &g_Kernel32);
+    return pfn( lpPathName, lpPrefixString, uUnique, lpTempFileName );
+}
+
+typedef UINT WINAPI FN_GetTempFileNameW( LPCWSTR lpPathName, LPCWSTR lpPrefixString, UINT uUnique, LPWSTR lpTempFileName );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetTempFileNameW( LPCWSTR lpPathName, LPCWSTR lpPrefixString, UINT uUnique, LPWSTR lpTempFileName )
+{
+    static FN_GetTempFileNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetTempFileNameW", &g_Kernel32);
+    return pfn( lpPathName, lpPrefixString, uUnique, lpTempFileName );
+}
+
+typedef UINT WINAPI FN_GetWindowsDirectoryA( LPSTR lpBuffer, UINT uSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetWindowsDirectoryA( LPSTR lpBuffer, UINT uSize )
+{
+    static FN_GetWindowsDirectoryA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetWindowsDirectoryA", &g_Kernel32);
+    return pfn( lpBuffer, uSize );
+}
+
+typedef UINT WINAPI FN_GetWindowsDirectoryW( LPWSTR lpBuffer, UINT uSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetWindowsDirectoryW( LPWSTR lpBuffer, UINT uSize )
+{
+    static FN_GetWindowsDirectoryW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetWindowsDirectoryW", &g_Kernel32);
+    return pfn( lpBuffer, uSize );
+}
+
+typedef UINT WINAPI FN_GetSystemWindowsDirectoryA( LPSTR lpBuffer, UINT uSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetSystemWindowsDirectoryA( LPSTR lpBuffer, UINT uSize )
+{
+    static FN_GetSystemWindowsDirectoryA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemWindowsDirectoryA", &g_Kernel32);
+    return pfn( lpBuffer, uSize );
+}
+
+typedef UINT WINAPI FN_GetSystemWindowsDirectoryW( LPWSTR lpBuffer, UINT uSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetSystemWindowsDirectoryW( LPWSTR lpBuffer, UINT uSize )
+{
+    static FN_GetSystemWindowsDirectoryW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemWindowsDirectoryW", &g_Kernel32);
+    return pfn( lpBuffer, uSize );
+}
+
+typedef UINT WINAPI FN_GetSystemWow64DirectoryA( LPSTR lpBuffer, UINT uSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetSystemWow64DirectoryA( LPSTR lpBuffer, UINT uSize )
+{
+    static FN_GetSystemWow64DirectoryA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemWow64DirectoryA", &g_Kernel32);
+    return pfn( lpBuffer, uSize );
+}
+
+typedef UINT WINAPI FN_GetSystemWow64DirectoryW( LPWSTR lpBuffer, UINT uSize );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetSystemWow64DirectoryW( LPWSTR lpBuffer, UINT uSize )
+{
+    static FN_GetSystemWow64DirectoryW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemWow64DirectoryW", &g_Kernel32);
+    return pfn( lpBuffer, uSize );
+}
+
+typedef BOOLEAN WINAPI FN_Wow64EnableWow64FsRedirection( BOOLEAN Wow64FsEnableRedirection );
+__declspec(dllexport) BOOLEAN WINAPI kPrf2Wrap_Wow64EnableWow64FsRedirection( BOOLEAN Wow64FsEnableRedirection )
+{
+    static FN_Wow64EnableWow64FsRedirection *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Wow64EnableWow64FsRedirection", &g_Kernel32);
+    return pfn( Wow64FsEnableRedirection );
+}
+
+typedef BOOL WINAPI FN_Wow64DisableWow64FsRedirection( PVOID * OldValue );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Wow64DisableWow64FsRedirection( PVOID * OldValue )
+{
+    static FN_Wow64DisableWow64FsRedirection *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Wow64DisableWow64FsRedirection", &g_Kernel32);
+    return pfn( OldValue );
+}
+
+typedef BOOL WINAPI FN_Wow64RevertWow64FsRedirection( PVOID OlValue );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Wow64RevertWow64FsRedirection( PVOID OlValue )
+{
+    static FN_Wow64RevertWow64FsRedirection *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Wow64RevertWow64FsRedirection", &g_Kernel32);
+    return pfn( OlValue );
+}
+
+typedef BOOL WINAPI FN_SetCurrentDirectoryA( LPCSTR lpPathName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetCurrentDirectoryA( LPCSTR lpPathName )
+{
+    static FN_SetCurrentDirectoryA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetCurrentDirectoryA", &g_Kernel32);
+    return pfn( lpPathName );
+}
+
+typedef BOOL WINAPI FN_SetCurrentDirectoryW( LPCWSTR lpPathName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetCurrentDirectoryW( LPCWSTR lpPathName )
+{
+    static FN_SetCurrentDirectoryW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetCurrentDirectoryW", &g_Kernel32);
+    return pfn( lpPathName );
+}
+
+typedef DWORD WINAPI FN_GetCurrentDirectoryA( DWORD nBufferLength, LPSTR lpBuffer );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetCurrentDirectoryA( DWORD nBufferLength, LPSTR lpBuffer )
+{
+    static FN_GetCurrentDirectoryA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrentDirectoryA", &g_Kernel32);
+    return pfn( nBufferLength, lpBuffer );
+}
+
+typedef DWORD WINAPI FN_GetCurrentDirectoryW( DWORD nBufferLength, LPWSTR lpBuffer );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetCurrentDirectoryW( DWORD nBufferLength, LPWSTR lpBuffer )
+{
+    static FN_GetCurrentDirectoryW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrentDirectoryW", &g_Kernel32);
+    return pfn( nBufferLength, lpBuffer );
+}
+
+typedef BOOL WINAPI FN_SetDllDirectoryA( LPCSTR lpPathName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetDllDirectoryA( LPCSTR lpPathName )
+{
+    static FN_SetDllDirectoryA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetDllDirectoryA", &g_Kernel32);
+    return pfn( lpPathName );
+}
+
+typedef BOOL WINAPI FN_SetDllDirectoryW( LPCWSTR lpPathName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetDllDirectoryW( LPCWSTR lpPathName )
+{
+    static FN_SetDllDirectoryW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetDllDirectoryW", &g_Kernel32);
+    return pfn( lpPathName );
+}
+
+typedef DWORD WINAPI FN_GetDllDirectoryA( DWORD nBufferLength, LPSTR lpBuffer );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetDllDirectoryA( DWORD nBufferLength, LPSTR lpBuffer )
+{
+    static FN_GetDllDirectoryA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDllDirectoryA", &g_Kernel32);
+    return pfn( nBufferLength, lpBuffer );
+}
+
+typedef DWORD WINAPI FN_GetDllDirectoryW( DWORD nBufferLength, LPWSTR lpBuffer );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetDllDirectoryW( DWORD nBufferLength, LPWSTR lpBuffer )
+{
+    static FN_GetDllDirectoryW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDllDirectoryW", &g_Kernel32);
+    return pfn( nBufferLength, lpBuffer );
+}
+
+typedef BOOL WINAPI FN_GetDiskFreeSpaceA( LPCSTR lpRootPathName, LPDWORD lpSectorsPerCluster, LPDWORD lpBytesPerSector, LPDWORD lpNumberOfFreeClusters, LPDWORD lpTotalNumberOfClusters );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetDiskFreeSpaceA( LPCSTR lpRootPathName, LPDWORD lpSectorsPerCluster, LPDWORD lpBytesPerSector, LPDWORD lpNumberOfFreeClusters, LPDWORD lpTotalNumberOfClusters )
+{
+    static FN_GetDiskFreeSpaceA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDiskFreeSpaceA", &g_Kernel32);
+    return pfn( lpRootPathName, lpSectorsPerCluster, lpBytesPerSector, lpNumberOfFreeClusters, lpTotalNumberOfClusters );
+}
+
+typedef BOOL WINAPI FN_GetDiskFreeSpaceW( LPCWSTR lpRootPathName, LPDWORD lpSectorsPerCluster, LPDWORD lpBytesPerSector, LPDWORD lpNumberOfFreeClusters, LPDWORD lpTotalNumberOfClusters );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetDiskFreeSpaceW( LPCWSTR lpRootPathName, LPDWORD lpSectorsPerCluster, LPDWORD lpBytesPerSector, LPDWORD lpNumberOfFreeClusters, LPDWORD lpTotalNumberOfClusters )
+{
+    static FN_GetDiskFreeSpaceW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDiskFreeSpaceW", &g_Kernel32);
+    return pfn( lpRootPathName, lpSectorsPerCluster, lpBytesPerSector, lpNumberOfFreeClusters, lpTotalNumberOfClusters );
+}
+
+typedef BOOL WINAPI FN_GetDiskFreeSpaceExA( LPCSTR lpDirectoryName, PULARGE_INTEGER lpFreeBytesAvailableToCaller, PULARGE_INTEGER lpTotalNumberOfBytes, PULARGE_INTEGER lpTotalNumberOfFreeBytes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetDiskFreeSpaceExA( LPCSTR lpDirectoryName, PULARGE_INTEGER lpFreeBytesAvailableToCaller, PULARGE_INTEGER lpTotalNumberOfBytes, PULARGE_INTEGER lpTotalNumberOfFreeBytes )
+{
+    static FN_GetDiskFreeSpaceExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDiskFreeSpaceExA", &g_Kernel32);
+    return pfn( lpDirectoryName, lpFreeBytesAvailableToCaller, lpTotalNumberOfBytes, lpTotalNumberOfFreeBytes );
+}
+
+typedef BOOL WINAPI FN_GetDiskFreeSpaceExW( LPCWSTR lpDirectoryName, PULARGE_INTEGER lpFreeBytesAvailableToCaller, PULARGE_INTEGER lpTotalNumberOfBytes, PULARGE_INTEGER lpTotalNumberOfFreeBytes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetDiskFreeSpaceExW( LPCWSTR lpDirectoryName, PULARGE_INTEGER lpFreeBytesAvailableToCaller, PULARGE_INTEGER lpTotalNumberOfBytes, PULARGE_INTEGER lpTotalNumberOfFreeBytes )
+{
+    static FN_GetDiskFreeSpaceExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDiskFreeSpaceExW", &g_Kernel32);
+    return pfn( lpDirectoryName, lpFreeBytesAvailableToCaller, lpTotalNumberOfBytes, lpTotalNumberOfFreeBytes );
+}
+
+typedef BOOL WINAPI FN_CreateDirectoryA( LPCSTR lpPathName, LPSECURITY_ATTRIBUTES lpSecurityAttributes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateDirectoryA( LPCSTR lpPathName, LPSECURITY_ATTRIBUTES lpSecurityAttributes )
+{
+    static FN_CreateDirectoryA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateDirectoryA", &g_Kernel32);
+    return pfn( lpPathName, lpSecurityAttributes );
+}
+
+typedef BOOL WINAPI FN_CreateDirectoryW( LPCWSTR lpPathName, LPSECURITY_ATTRIBUTES lpSecurityAttributes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateDirectoryW( LPCWSTR lpPathName, LPSECURITY_ATTRIBUTES lpSecurityAttributes )
+{
+    static FN_CreateDirectoryW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateDirectoryW", &g_Kernel32);
+    return pfn( lpPathName, lpSecurityAttributes );
+}
+
+typedef BOOL WINAPI FN_CreateDirectoryExA( LPCSTR lpTemplateDirectory, LPCSTR lpNewDirectory, LPSECURITY_ATTRIBUTES lpSecurityAttributes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateDirectoryExA( LPCSTR lpTemplateDirectory, LPCSTR lpNewDirectory, LPSECURITY_ATTRIBUTES lpSecurityAttributes )
+{
+    static FN_CreateDirectoryExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateDirectoryExA", &g_Kernel32);
+    return pfn( lpTemplateDirectory, lpNewDirectory, lpSecurityAttributes );
+}
+
+typedef BOOL WINAPI FN_CreateDirectoryExW( LPCWSTR lpTemplateDirectory, LPCWSTR lpNewDirectory, LPSECURITY_ATTRIBUTES lpSecurityAttributes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateDirectoryExW( LPCWSTR lpTemplateDirectory, LPCWSTR lpNewDirectory, LPSECURITY_ATTRIBUTES lpSecurityAttributes )
+{
+    static FN_CreateDirectoryExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateDirectoryExW", &g_Kernel32);
+    return pfn( lpTemplateDirectory, lpNewDirectory, lpSecurityAttributes );
+}
+
+typedef BOOL WINAPI FN_RemoveDirectoryA( LPCSTR lpPathName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_RemoveDirectoryA( LPCSTR lpPathName )
+{
+    static FN_RemoveDirectoryA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RemoveDirectoryA", &g_Kernel32);
+    return pfn( lpPathName );
+}
+
+typedef BOOL WINAPI FN_RemoveDirectoryW( LPCWSTR lpPathName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_RemoveDirectoryW( LPCWSTR lpPathName )
+{
+    static FN_RemoveDirectoryW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RemoveDirectoryW", &g_Kernel32);
+    return pfn( lpPathName );
+}
+
+typedef DWORD WINAPI FN_GetFullPathNameA( LPCSTR lpFileName, DWORD nBufferLength, LPSTR lpBuffer, LPSTR * lpFilePart );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetFullPathNameA( LPCSTR lpFileName, DWORD nBufferLength, LPSTR lpBuffer, LPSTR * lpFilePart )
+{
+    static FN_GetFullPathNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFullPathNameA", &g_Kernel32);
+    return pfn( lpFileName, nBufferLength, lpBuffer, lpFilePart );
+}
+
+typedef DWORD WINAPI FN_GetFullPathNameW( LPCWSTR lpFileName, DWORD nBufferLength, LPWSTR lpBuffer, LPWSTR * lpFilePart );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetFullPathNameW( LPCWSTR lpFileName, DWORD nBufferLength, LPWSTR lpBuffer, LPWSTR * lpFilePart )
+{
+    static FN_GetFullPathNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFullPathNameW", &g_Kernel32);
+    return pfn( lpFileName, nBufferLength, lpBuffer, lpFilePart );
+}
+
+typedef BOOL WINAPI FN_DefineDosDeviceA( DWORD dwFlags, LPCSTR lpDeviceName, LPCSTR lpTargetPath );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DefineDosDeviceA( DWORD dwFlags, LPCSTR lpDeviceName, LPCSTR lpTargetPath )
+{
+    static FN_DefineDosDeviceA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DefineDosDeviceA", &g_Kernel32);
+    return pfn( dwFlags, lpDeviceName, lpTargetPath );
+}
+
+typedef BOOL WINAPI FN_DefineDosDeviceW( DWORD dwFlags, LPCWSTR lpDeviceName, LPCWSTR lpTargetPath );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DefineDosDeviceW( DWORD dwFlags, LPCWSTR lpDeviceName, LPCWSTR lpTargetPath )
+{
+    static FN_DefineDosDeviceW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DefineDosDeviceW", &g_Kernel32);
+    return pfn( dwFlags, lpDeviceName, lpTargetPath );
+}
+
+typedef DWORD WINAPI FN_QueryDosDeviceA( LPCSTR lpDeviceName, LPSTR lpTargetPath, DWORD ucchMax );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_QueryDosDeviceA( LPCSTR lpDeviceName, LPSTR lpTargetPath, DWORD ucchMax )
+{
+    static FN_QueryDosDeviceA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "QueryDosDeviceA", &g_Kernel32);
+    return pfn( lpDeviceName, lpTargetPath, ucchMax );
+}
+
+typedef DWORD WINAPI FN_QueryDosDeviceW( LPCWSTR lpDeviceName, LPWSTR lpTargetPath, DWORD ucchMax );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_QueryDosDeviceW( LPCWSTR lpDeviceName, LPWSTR lpTargetPath, DWORD ucchMax )
+{
+    static FN_QueryDosDeviceW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "QueryDosDeviceW", &g_Kernel32);
+    return pfn( lpDeviceName, lpTargetPath, ucchMax );
+}
+
+typedef HANDLE WINAPI FN_CreateFileA( LPCSTR lpFileName, DWORD dwDesiredAccess, DWORD dwShareMode, LPSECURITY_ATTRIBUTES lpSecurityAttributes, DWORD dwCreationDisposition, DWORD dwFlagsAndAttributes, HANDLE hTemplateFile );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateFileA( LPCSTR lpFileName, DWORD dwDesiredAccess, DWORD dwShareMode, LPSECURITY_ATTRIBUTES lpSecurityAttributes, DWORD dwCreationDisposition, DWORD dwFlagsAndAttributes, HANDLE hTemplateFile )
+{
+    static FN_CreateFileA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateFileA", &g_Kernel32);
+    return pfn( lpFileName, dwDesiredAccess, dwShareMode, lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile );
+}
+
+typedef HANDLE WINAPI FN_CreateFileW( LPCWSTR lpFileName, DWORD dwDesiredAccess, DWORD dwShareMode, LPSECURITY_ATTRIBUTES lpSecurityAttributes, DWORD dwCreationDisposition, DWORD dwFlagsAndAttributes, HANDLE hTemplateFile );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateFileW( LPCWSTR lpFileName, DWORD dwDesiredAccess, DWORD dwShareMode, LPSECURITY_ATTRIBUTES lpSecurityAttributes, DWORD dwCreationDisposition, DWORD dwFlagsAndAttributes, HANDLE hTemplateFile )
+{
+    static FN_CreateFileW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateFileW", &g_Kernel32);
+    return pfn( lpFileName, dwDesiredAccess, dwShareMode, lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile );
+}
+
+typedef HANDLE WINAPI FN_ReOpenFile( HANDLE hOriginalFile, DWORD dwDesiredAccess, DWORD dwShareMode, DWORD dwFlagsAndAttributes );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_ReOpenFile( HANDLE hOriginalFile, DWORD dwDesiredAccess, DWORD dwShareMode, DWORD dwFlagsAndAttributes )
+{
+    static FN_ReOpenFile *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReOpenFile", &g_Kernel32);
+    return pfn( hOriginalFile, dwDesiredAccess, dwShareMode, dwFlagsAndAttributes );
+}
+
+typedef BOOL WINAPI FN_SetFileAttributesA( LPCSTR lpFileName, DWORD dwFileAttributes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetFileAttributesA( LPCSTR lpFileName, DWORD dwFileAttributes )
+{
+    static FN_SetFileAttributesA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFileAttributesA", &g_Kernel32);
+    return pfn( lpFileName, dwFileAttributes );
+}
+
+typedef BOOL WINAPI FN_SetFileAttributesW( LPCWSTR lpFileName, DWORD dwFileAttributes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetFileAttributesW( LPCWSTR lpFileName, DWORD dwFileAttributes )
+{
+    static FN_SetFileAttributesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFileAttributesW", &g_Kernel32);
+    return pfn( lpFileName, dwFileAttributes );
+}
+
+typedef DWORD WINAPI FN_GetFileAttributesA( LPCSTR lpFileName );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetFileAttributesA( LPCSTR lpFileName )
+{
+    static FN_GetFileAttributesA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileAttributesA", &g_Kernel32);
+    return pfn( lpFileName );
+}
+
+typedef DWORD WINAPI FN_GetFileAttributesW( LPCWSTR lpFileName );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetFileAttributesW( LPCWSTR lpFileName )
+{
+    static FN_GetFileAttributesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileAttributesW", &g_Kernel32);
+    return pfn( lpFileName );
+}
+
+typedef BOOL WINAPI FN_GetFileAttributesExA( LPCSTR lpFileName, GET_FILEEX_INFO_LEVELS fInfoLevelId, LPVOID lpFileInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetFileAttributesExA( LPCSTR lpFileName, GET_FILEEX_INFO_LEVELS fInfoLevelId, LPVOID lpFileInformation )
+{
+    static FN_GetFileAttributesExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileAttributesExA", &g_Kernel32);
+    return pfn( lpFileName, fInfoLevelId, lpFileInformation );
+}
+
+typedef BOOL WINAPI FN_GetFileAttributesExW( LPCWSTR lpFileName, GET_FILEEX_INFO_LEVELS fInfoLevelId, LPVOID lpFileInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetFileAttributesExW( LPCWSTR lpFileName, GET_FILEEX_INFO_LEVELS fInfoLevelId, LPVOID lpFileInformation )
+{
+    static FN_GetFileAttributesExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileAttributesExW", &g_Kernel32);
+    return pfn( lpFileName, fInfoLevelId, lpFileInformation );
+}
+
+typedef DWORD WINAPI FN_GetCompressedFileSizeA( LPCSTR lpFileName, LPDWORD lpFileSizeHigh );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetCompressedFileSizeA( LPCSTR lpFileName, LPDWORD lpFileSizeHigh )
+{
+    static FN_GetCompressedFileSizeA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCompressedFileSizeA", &g_Kernel32);
+    return pfn( lpFileName, lpFileSizeHigh );
+}
+
+typedef DWORD WINAPI FN_GetCompressedFileSizeW( LPCWSTR lpFileName, LPDWORD lpFileSizeHigh );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetCompressedFileSizeW( LPCWSTR lpFileName, LPDWORD lpFileSizeHigh )
+{
+    static FN_GetCompressedFileSizeW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCompressedFileSizeW", &g_Kernel32);
+    return pfn( lpFileName, lpFileSizeHigh );
+}
+
+typedef BOOL WINAPI FN_DeleteFileA( LPCSTR lpFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DeleteFileA( LPCSTR lpFileName )
+{
+    static FN_DeleteFileA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeleteFileA", &g_Kernel32);
+    return pfn( lpFileName );
+}
+
+typedef BOOL WINAPI FN_DeleteFileW( LPCWSTR lpFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DeleteFileW( LPCWSTR lpFileName )
+{
+    static FN_DeleteFileW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeleteFileW", &g_Kernel32);
+    return pfn( lpFileName );
+}
+
+typedef BOOL WINAPI FN_CheckNameLegalDOS8Dot3A( LPCSTR lpName, LPSTR lpOemName, DWORD OemNameSize, PBOOL pbNameContainsSpaces , PBOOL pbNameLegal );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CheckNameLegalDOS8Dot3A( LPCSTR lpName, LPSTR lpOemName, DWORD OemNameSize, PBOOL pbNameContainsSpaces , PBOOL pbNameLegal )
+{
+    static FN_CheckNameLegalDOS8Dot3A *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CheckNameLegalDOS8Dot3A", &g_Kernel32);
+    return pfn( lpName, lpOemName, OemNameSize, pbNameContainsSpaces , pbNameLegal );
+}
+
+typedef BOOL WINAPI FN_CheckNameLegalDOS8Dot3W( LPCWSTR lpName, LPSTR lpOemName, DWORD OemNameSize, PBOOL pbNameContainsSpaces , PBOOL pbNameLegal );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CheckNameLegalDOS8Dot3W( LPCWSTR lpName, LPSTR lpOemName, DWORD OemNameSize, PBOOL pbNameContainsSpaces , PBOOL pbNameLegal )
+{
+    static FN_CheckNameLegalDOS8Dot3W *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CheckNameLegalDOS8Dot3W", &g_Kernel32);
+    return pfn( lpName, lpOemName, OemNameSize, pbNameContainsSpaces , pbNameLegal );
+}
+
+typedef HANDLE WINAPI FN_FindFirstFileExA( LPCSTR lpFileName, FINDEX_INFO_LEVELS fInfoLevelId, LPVOID lpFindFileData, FINDEX_SEARCH_OPS fSearchOp, LPVOID lpSearchFilter, DWORD dwAdditionalFlags );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_FindFirstFileExA( LPCSTR lpFileName, FINDEX_INFO_LEVELS fInfoLevelId, LPVOID lpFindFileData, FINDEX_SEARCH_OPS fSearchOp, LPVOID lpSearchFilter, DWORD dwAdditionalFlags )
+{
+    static FN_FindFirstFileExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindFirstFileExA", &g_Kernel32);
+    return pfn( lpFileName, fInfoLevelId, lpFindFileData, fSearchOp, lpSearchFilter, dwAdditionalFlags );
+}
+
+typedef HANDLE WINAPI FN_FindFirstFileExW( LPCWSTR lpFileName, FINDEX_INFO_LEVELS fInfoLevelId, LPVOID lpFindFileData, FINDEX_SEARCH_OPS fSearchOp, LPVOID lpSearchFilter, DWORD dwAdditionalFlags );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_FindFirstFileExW( LPCWSTR lpFileName, FINDEX_INFO_LEVELS fInfoLevelId, LPVOID lpFindFileData, FINDEX_SEARCH_OPS fSearchOp, LPVOID lpSearchFilter, DWORD dwAdditionalFlags )
+{
+    static FN_FindFirstFileExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindFirstFileExW", &g_Kernel32);
+    return pfn( lpFileName, fInfoLevelId, lpFindFileData, fSearchOp, lpSearchFilter, dwAdditionalFlags );
+}
+
+typedef HANDLE WINAPI FN_FindFirstFileA( LPCSTR lpFileName, LPWIN32_FIND_DATAA lpFindFileData );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_FindFirstFileA( LPCSTR lpFileName, LPWIN32_FIND_DATAA lpFindFileData )
+{
+    static FN_FindFirstFileA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindFirstFileA", &g_Kernel32);
+    return pfn( lpFileName, lpFindFileData );
+}
+
+typedef HANDLE WINAPI FN_FindFirstFileW( LPCWSTR lpFileName, LPWIN32_FIND_DATAW lpFindFileData );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_FindFirstFileW( LPCWSTR lpFileName, LPWIN32_FIND_DATAW lpFindFileData )
+{
+    static FN_FindFirstFileW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindFirstFileW", &g_Kernel32);
+    return pfn( lpFileName, lpFindFileData );
+}
+
+typedef BOOL WINAPI FN_FindNextFileA( HANDLE hFindFile, LPWIN32_FIND_DATAA lpFindFileData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindNextFileA( HANDLE hFindFile, LPWIN32_FIND_DATAA lpFindFileData )
+{
+    static FN_FindNextFileA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindNextFileA", &g_Kernel32);
+    return pfn( hFindFile, lpFindFileData );
+}
+
+typedef BOOL WINAPI FN_FindNextFileW( HANDLE hFindFile, LPWIN32_FIND_DATAW lpFindFileData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindNextFileW( HANDLE hFindFile, LPWIN32_FIND_DATAW lpFindFileData )
+{
+    static FN_FindNextFileW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindNextFileW", &g_Kernel32);
+    return pfn( hFindFile, lpFindFileData );
+}
+
+typedef DWORD WINAPI FN_SearchPathA( LPCSTR lpPath, LPCSTR lpFileName, LPCSTR lpExtension, DWORD nBufferLength, LPSTR lpBuffer, LPSTR * lpFilePart );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_SearchPathA( LPCSTR lpPath, LPCSTR lpFileName, LPCSTR lpExtension, DWORD nBufferLength, LPSTR lpBuffer, LPSTR * lpFilePart )
+{
+    static FN_SearchPathA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SearchPathA", &g_Kernel32);
+    return pfn( lpPath, lpFileName, lpExtension, nBufferLength, lpBuffer, lpFilePart );
+}
+
+typedef DWORD WINAPI FN_SearchPathW( LPCWSTR lpPath, LPCWSTR lpFileName, LPCWSTR lpExtension, DWORD nBufferLength, LPWSTR lpBuffer, LPWSTR * lpFilePart );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_SearchPathW( LPCWSTR lpPath, LPCWSTR lpFileName, LPCWSTR lpExtension, DWORD nBufferLength, LPWSTR lpBuffer, LPWSTR * lpFilePart )
+{
+    static FN_SearchPathW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SearchPathW", &g_Kernel32);
+    return pfn( lpPath, lpFileName, lpExtension, nBufferLength, lpBuffer, lpFilePart );
+}
+
+typedef BOOL WINAPI FN_CopyFileA( LPCSTR lpExistingFileName, LPCSTR lpNewFileName, BOOL bFailIfExists );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CopyFileA( LPCSTR lpExistingFileName, LPCSTR lpNewFileName, BOOL bFailIfExists )
+{
+    static FN_CopyFileA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CopyFileA", &g_Kernel32);
+    return pfn( lpExistingFileName, lpNewFileName, bFailIfExists );
+}
+
+typedef BOOL WINAPI FN_CopyFileW( LPCWSTR lpExistingFileName, LPCWSTR lpNewFileName, BOOL bFailIfExists );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CopyFileW( LPCWSTR lpExistingFileName, LPCWSTR lpNewFileName, BOOL bFailIfExists )
+{
+    static FN_CopyFileW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CopyFileW", &g_Kernel32);
+    return pfn( lpExistingFileName, lpNewFileName, bFailIfExists );
+}
+
+typedef BOOL WINAPI FN_CopyFileExA( LPCSTR lpExistingFileName, LPCSTR lpNewFileName, LPPROGRESS_ROUTINE lpProgressRoutine, LPVOID lpData, LPBOOL pbCancel, DWORD dwCopyFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CopyFileExA( LPCSTR lpExistingFileName, LPCSTR lpNewFileName, LPPROGRESS_ROUTINE lpProgressRoutine, LPVOID lpData, LPBOOL pbCancel, DWORD dwCopyFlags )
+{
+    static FN_CopyFileExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CopyFileExA", &g_Kernel32);
+    return pfn( lpExistingFileName, lpNewFileName, lpProgressRoutine, lpData, pbCancel, dwCopyFlags );
+}
+
+typedef BOOL WINAPI FN_CopyFileExW( LPCWSTR lpExistingFileName, LPCWSTR lpNewFileName, LPPROGRESS_ROUTINE lpProgressRoutine, LPVOID lpData, LPBOOL pbCancel, DWORD dwCopyFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CopyFileExW( LPCWSTR lpExistingFileName, LPCWSTR lpNewFileName, LPPROGRESS_ROUTINE lpProgressRoutine, LPVOID lpData, LPBOOL pbCancel, DWORD dwCopyFlags )
+{
+    static FN_CopyFileExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CopyFileExW", &g_Kernel32);
+    return pfn( lpExistingFileName, lpNewFileName, lpProgressRoutine, lpData, pbCancel, dwCopyFlags );
+}
+
+typedef BOOL WINAPI FN_MoveFileA( LPCSTR lpExistingFileName, LPCSTR lpNewFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_MoveFileA( LPCSTR lpExistingFileName, LPCSTR lpNewFileName )
+{
+    static FN_MoveFileA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MoveFileA", &g_Kernel32);
+    return pfn( lpExistingFileName, lpNewFileName );
+}
+
+typedef BOOL WINAPI FN_MoveFileW( LPCWSTR lpExistingFileName, LPCWSTR lpNewFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_MoveFileW( LPCWSTR lpExistingFileName, LPCWSTR lpNewFileName )
+{
+    static FN_MoveFileW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MoveFileW", &g_Kernel32);
+    return pfn( lpExistingFileName, lpNewFileName );
+}
+
+typedef BOOL WINAPI FN_MoveFileExA( LPCSTR lpExistingFileName, LPCSTR lpNewFileName, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_MoveFileExA( LPCSTR lpExistingFileName, LPCSTR lpNewFileName, DWORD dwFlags )
+{
+    static FN_MoveFileExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MoveFileExA", &g_Kernel32);
+    return pfn( lpExistingFileName, lpNewFileName, dwFlags );
+}
+
+typedef BOOL WINAPI FN_MoveFileExW( LPCWSTR lpExistingFileName, LPCWSTR lpNewFileName, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_MoveFileExW( LPCWSTR lpExistingFileName, LPCWSTR lpNewFileName, DWORD dwFlags )
+{
+    static FN_MoveFileExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MoveFileExW", &g_Kernel32);
+    return pfn( lpExistingFileName, lpNewFileName, dwFlags );
+}
+
+typedef BOOL WINAPI FN_MoveFileWithProgressA( LPCSTR lpExistingFileName, LPCSTR lpNewFileName, LPPROGRESS_ROUTINE lpProgressRoutine, LPVOID lpData, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_MoveFileWithProgressA( LPCSTR lpExistingFileName, LPCSTR lpNewFileName, LPPROGRESS_ROUTINE lpProgressRoutine, LPVOID lpData, DWORD dwFlags )
+{
+    static FN_MoveFileWithProgressA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MoveFileWithProgressA", &g_Kernel32);
+    return pfn( lpExistingFileName, lpNewFileName, lpProgressRoutine, lpData, dwFlags );
+}
+
+typedef BOOL WINAPI FN_MoveFileWithProgressW( LPCWSTR lpExistingFileName, LPCWSTR lpNewFileName, LPPROGRESS_ROUTINE lpProgressRoutine, LPVOID lpData, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_MoveFileWithProgressW( LPCWSTR lpExistingFileName, LPCWSTR lpNewFileName, LPPROGRESS_ROUTINE lpProgressRoutine, LPVOID lpData, DWORD dwFlags )
+{
+    static FN_MoveFileWithProgressW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MoveFileWithProgressW", &g_Kernel32);
+    return pfn( lpExistingFileName, lpNewFileName, lpProgressRoutine, lpData, dwFlags );
+}
+
+typedef BOOL WINAPI FN_ReplaceFileA( LPCSTR lpReplacedFileName, LPCSTR lpReplacementFileName, LPCSTR lpBackupFileName, DWORD dwReplaceFlags, LPVOID lpExclude, LPVOID lpReserved );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReplaceFileA( LPCSTR lpReplacedFileName, LPCSTR lpReplacementFileName, LPCSTR lpBackupFileName, DWORD dwReplaceFlags, LPVOID lpExclude, LPVOID lpReserved )
+{
+    static FN_ReplaceFileA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReplaceFileA", &g_Kernel32);
+    return pfn( lpReplacedFileName, lpReplacementFileName, lpBackupFileName, dwReplaceFlags, lpExclude, lpReserved );
+}
+
+typedef BOOL WINAPI FN_ReplaceFileW( LPCWSTR lpReplacedFileName, LPCWSTR lpReplacementFileName, LPCWSTR lpBackupFileName, DWORD dwReplaceFlags, LPVOID lpExclude, LPVOID lpReserved );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReplaceFileW( LPCWSTR lpReplacedFileName, LPCWSTR lpReplacementFileName, LPCWSTR lpBackupFileName, DWORD dwReplaceFlags, LPVOID lpExclude, LPVOID lpReserved )
+{
+    static FN_ReplaceFileW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReplaceFileW", &g_Kernel32);
+    return pfn( lpReplacedFileName, lpReplacementFileName, lpBackupFileName, dwReplaceFlags, lpExclude, lpReserved );
+}
+
+typedef BOOL WINAPI FN_CreateHardLinkA( LPCSTR lpFileName, LPCSTR lpExistingFileName, LPSECURITY_ATTRIBUTES lpSecurityAttributes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateHardLinkA( LPCSTR lpFileName, LPCSTR lpExistingFileName, LPSECURITY_ATTRIBUTES lpSecurityAttributes )
+{
+    static FN_CreateHardLinkA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateHardLinkA", &g_Kernel32);
+    return pfn( lpFileName, lpExistingFileName, lpSecurityAttributes );
+}
+
+typedef BOOL WINAPI FN_CreateHardLinkW( LPCWSTR lpFileName, LPCWSTR lpExistingFileName, LPSECURITY_ATTRIBUTES lpSecurityAttributes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateHardLinkW( LPCWSTR lpFileName, LPCWSTR lpExistingFileName, LPSECURITY_ATTRIBUTES lpSecurityAttributes )
+{
+    static FN_CreateHardLinkW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateHardLinkW", &g_Kernel32);
+    return pfn( lpFileName, lpExistingFileName, lpSecurityAttributes );
+}
+
+typedef HANDLE WINAPI FN_FindFirstStreamW( LPCWSTR lpFileName, STREAM_INFO_LEVELS InfoLevel, LPVOID lpFindStreamData, DWORD dwFlags );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_FindFirstStreamW( LPCWSTR lpFileName, STREAM_INFO_LEVELS InfoLevel, LPVOID lpFindStreamData, DWORD dwFlags )
+{
+    static FN_FindFirstStreamW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindFirstStreamW", &g_Kernel32);
+    return pfn( lpFileName, InfoLevel, lpFindStreamData, dwFlags );
+}
+
+typedef BOOL APIENTRY FN_FindNextStreamW( HANDLE hFindStream, LPVOID lpFindStreamData );
+__declspec(dllexport) BOOL APIENTRY kPrf2Wrap_FindNextStreamW( HANDLE hFindStream, LPVOID lpFindStreamData )
+{
+    static FN_FindNextStreamW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindNextStreamW", &g_Kernel32);
+    return pfn( hFindStream, lpFindStreamData );
+}
+
+typedef HANDLE WINAPI FN_CreateNamedPipeA( LPCSTR lpName, DWORD dwOpenMode, DWORD dwPipeMode, DWORD nMaxInstances, DWORD nOutBufferSize, DWORD nInBufferSize, DWORD nDefaultTimeOut, LPSECURITY_ATTRIBUTES lpSecurityAttributes );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateNamedPipeA( LPCSTR lpName, DWORD dwOpenMode, DWORD dwPipeMode, DWORD nMaxInstances, DWORD nOutBufferSize, DWORD nInBufferSize, DWORD nDefaultTimeOut, LPSECURITY_ATTRIBUTES lpSecurityAttributes )
+{
+    static FN_CreateNamedPipeA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateNamedPipeA", &g_Kernel32);
+    return pfn( lpName, dwOpenMode, dwPipeMode, nMaxInstances, nOutBufferSize, nInBufferSize, nDefaultTimeOut, lpSecurityAttributes );
+}
+
+typedef HANDLE WINAPI FN_CreateNamedPipeW( LPCWSTR lpName, DWORD dwOpenMode, DWORD dwPipeMode, DWORD nMaxInstances, DWORD nOutBufferSize, DWORD nInBufferSize, DWORD nDefaultTimeOut, LPSECURITY_ATTRIBUTES lpSecurityAttributes );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateNamedPipeW( LPCWSTR lpName, DWORD dwOpenMode, DWORD dwPipeMode, DWORD nMaxInstances, DWORD nOutBufferSize, DWORD nInBufferSize, DWORD nDefaultTimeOut, LPSECURITY_ATTRIBUTES lpSecurityAttributes )
+{
+    static FN_CreateNamedPipeW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateNamedPipeW", &g_Kernel32);
+    return pfn( lpName, dwOpenMode, dwPipeMode, nMaxInstances, nOutBufferSize, nInBufferSize, nDefaultTimeOut, lpSecurityAttributes );
+}
+
+typedef BOOL WINAPI FN_GetNamedPipeHandleStateA( HANDLE hNamedPipe, LPDWORD lpState, LPDWORD lpCurInstances, LPDWORD lpMaxCollectionCount, LPDWORD lpCollectDataTimeout, LPSTR lpUserName, DWORD nMaxUserNameSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetNamedPipeHandleStateA( HANDLE hNamedPipe, LPDWORD lpState, LPDWORD lpCurInstances, LPDWORD lpMaxCollectionCount, LPDWORD lpCollectDataTimeout, LPSTR lpUserName, DWORD nMaxUserNameSize )
+{
+    static FN_GetNamedPipeHandleStateA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNamedPipeHandleStateA", &g_Kernel32);
+    return pfn( hNamedPipe, lpState, lpCurInstances, lpMaxCollectionCount, lpCollectDataTimeout, lpUserName, nMaxUserNameSize );
+}
+
+typedef BOOL WINAPI FN_GetNamedPipeHandleStateW( HANDLE hNamedPipe, LPDWORD lpState, LPDWORD lpCurInstances, LPDWORD lpMaxCollectionCount, LPDWORD lpCollectDataTimeout, LPWSTR lpUserName, DWORD nMaxUserNameSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetNamedPipeHandleStateW( HANDLE hNamedPipe, LPDWORD lpState, LPDWORD lpCurInstances, LPDWORD lpMaxCollectionCount, LPDWORD lpCollectDataTimeout, LPWSTR lpUserName, DWORD nMaxUserNameSize )
+{
+    static FN_GetNamedPipeHandleStateW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNamedPipeHandleStateW", &g_Kernel32);
+    return pfn( hNamedPipe, lpState, lpCurInstances, lpMaxCollectionCount, lpCollectDataTimeout, lpUserName, nMaxUserNameSize );
+}
+
+typedef BOOL WINAPI FN_CallNamedPipeA( LPCSTR lpNamedPipeName, LPVOID lpInBuffer, DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize, LPDWORD lpBytesRead, DWORD nTimeOut );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CallNamedPipeA( LPCSTR lpNamedPipeName, LPVOID lpInBuffer, DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize, LPDWORD lpBytesRead, DWORD nTimeOut )
+{
+    static FN_CallNamedPipeA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CallNamedPipeA", &g_Kernel32);
+    return pfn( lpNamedPipeName, lpInBuffer, nInBufferSize, lpOutBuffer, nOutBufferSize, lpBytesRead, nTimeOut );
+}
+
+typedef BOOL WINAPI FN_CallNamedPipeW( LPCWSTR lpNamedPipeName, LPVOID lpInBuffer, DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize, LPDWORD lpBytesRead, DWORD nTimeOut );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CallNamedPipeW( LPCWSTR lpNamedPipeName, LPVOID lpInBuffer, DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize, LPDWORD lpBytesRead, DWORD nTimeOut )
+{
+    static FN_CallNamedPipeW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CallNamedPipeW", &g_Kernel32);
+    return pfn( lpNamedPipeName, lpInBuffer, nInBufferSize, lpOutBuffer, nOutBufferSize, lpBytesRead, nTimeOut );
+}
+
+typedef BOOL WINAPI FN_WaitNamedPipeA( LPCSTR lpNamedPipeName, DWORD nTimeOut );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WaitNamedPipeA( LPCSTR lpNamedPipeName, DWORD nTimeOut )
+{
+    static FN_WaitNamedPipeA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WaitNamedPipeA", &g_Kernel32);
+    return pfn( lpNamedPipeName, nTimeOut );
+}
+
+typedef BOOL WINAPI FN_WaitNamedPipeW( LPCWSTR lpNamedPipeName, DWORD nTimeOut );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WaitNamedPipeW( LPCWSTR lpNamedPipeName, DWORD nTimeOut )
+{
+    static FN_WaitNamedPipeW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WaitNamedPipeW", &g_Kernel32);
+    return pfn( lpNamedPipeName, nTimeOut );
+}
+
+typedef BOOL WINAPI FN_SetVolumeLabelA( LPCSTR lpRootPathName, LPCSTR lpVolumeName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetVolumeLabelA( LPCSTR lpRootPathName, LPCSTR lpVolumeName )
+{
+    static FN_SetVolumeLabelA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetVolumeLabelA", &g_Kernel32);
+    return pfn( lpRootPathName, lpVolumeName );
+}
+
+typedef BOOL WINAPI FN_SetVolumeLabelW( LPCWSTR lpRootPathName, LPCWSTR lpVolumeName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetVolumeLabelW( LPCWSTR lpRootPathName, LPCWSTR lpVolumeName )
+{
+    static FN_SetVolumeLabelW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetVolumeLabelW", &g_Kernel32);
+    return pfn( lpRootPathName, lpVolumeName );
+}
+
+typedef VOID WINAPI FN_SetFileApisToOEM( VOID );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_SetFileApisToOEM( VOID )
+{
+    static FN_SetFileApisToOEM *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFileApisToOEM", &g_Kernel32);
+    pfn ();
+}
+
+typedef VOID WINAPI FN_SetFileApisToANSI( VOID );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_SetFileApisToANSI( VOID )
+{
+    static FN_SetFileApisToANSI *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFileApisToANSI", &g_Kernel32);
+    pfn ();
+}
+
+typedef BOOL WINAPI FN_AreFileApisANSI( VOID );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AreFileApisANSI( VOID )
+{
+    static FN_AreFileApisANSI *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AreFileApisANSI", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_GetVolumeInformationA( LPCSTR lpRootPathName, LPSTR lpVolumeNameBuffer, DWORD nVolumeNameSize, LPDWORD lpVolumeSerialNumber, LPDWORD lpMaximumComponentLength, LPDWORD lpFileSystemFlags, LPSTR lpFileSystemNameBuffer, DWORD nFileSystemNameSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetVolumeInformationA( LPCSTR lpRootPathName, LPSTR lpVolumeNameBuffer, DWORD nVolumeNameSize, LPDWORD lpVolumeSerialNumber, LPDWORD lpMaximumComponentLength, LPDWORD lpFileSystemFlags, LPSTR lpFileSystemNameBuffer, DWORD nFileSystemNameSize )
+{
+    static FN_GetVolumeInformationA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetVolumeInformationA", &g_Kernel32);
+    return pfn( lpRootPathName, lpVolumeNameBuffer, nVolumeNameSize, lpVolumeSerialNumber, lpMaximumComponentLength, lpFileSystemFlags, lpFileSystemNameBuffer, nFileSystemNameSize );
+}
+
+typedef BOOL WINAPI FN_GetVolumeInformationW( LPCWSTR lpRootPathName, LPWSTR lpVolumeNameBuffer, DWORD nVolumeNameSize, LPDWORD lpVolumeSerialNumber, LPDWORD lpMaximumComponentLength, LPDWORD lpFileSystemFlags, LPWSTR lpFileSystemNameBuffer, DWORD nFileSystemNameSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetVolumeInformationW( LPCWSTR lpRootPathName, LPWSTR lpVolumeNameBuffer, DWORD nVolumeNameSize, LPDWORD lpVolumeSerialNumber, LPDWORD lpMaximumComponentLength, LPDWORD lpFileSystemFlags, LPWSTR lpFileSystemNameBuffer, DWORD nFileSystemNameSize )
+{
+    static FN_GetVolumeInformationW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetVolumeInformationW", &g_Kernel32);
+    return pfn( lpRootPathName, lpVolumeNameBuffer, nVolumeNameSize, lpVolumeSerialNumber, lpMaximumComponentLength, lpFileSystemFlags, lpFileSystemNameBuffer, nFileSystemNameSize );
+}
+
+typedef BOOL WINAPI FN_CancelIo( HANDLE hFile );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CancelIo( HANDLE hFile )
+{
+    static FN_CancelIo *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CancelIo", &g_Kernel32);
+    return pfn( hFile );
+}
+
+typedef BOOL WINAPI FN_ClearEventLogA( HANDLE hEventLog, LPCSTR lpBackupFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ClearEventLogA( HANDLE hEventLog, LPCSTR lpBackupFileName )
+{
+    static FN_ClearEventLogA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ClearEventLogA", &g_Kernel32);
+    return pfn( hEventLog, lpBackupFileName );
+}
+
+typedef BOOL WINAPI FN_ClearEventLogW( HANDLE hEventLog, LPCWSTR lpBackupFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ClearEventLogW( HANDLE hEventLog, LPCWSTR lpBackupFileName )
+{
+    static FN_ClearEventLogW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ClearEventLogW", &g_Kernel32);
+    return pfn( hEventLog, lpBackupFileName );
+}
+
+typedef BOOL WINAPI FN_BackupEventLogA( HANDLE hEventLog, LPCSTR lpBackupFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_BackupEventLogA( HANDLE hEventLog, LPCSTR lpBackupFileName )
+{
+    static FN_BackupEventLogA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "BackupEventLogA", &g_Kernel32);
+    return pfn( hEventLog, lpBackupFileName );
+}
+
+typedef BOOL WINAPI FN_BackupEventLogW( HANDLE hEventLog, LPCWSTR lpBackupFileName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_BackupEventLogW( HANDLE hEventLog, LPCWSTR lpBackupFileName )
+{
+    static FN_BackupEventLogW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "BackupEventLogW", &g_Kernel32);
+    return pfn( hEventLog, lpBackupFileName );
+}
+
+typedef BOOL WINAPI FN_CloseEventLog( HANDLE hEventLog );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CloseEventLog( HANDLE hEventLog )
+{
+    static FN_CloseEventLog *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CloseEventLog", &g_Kernel32);
+    return pfn( hEventLog );
+}
+
+typedef BOOL WINAPI FN_DeregisterEventSource( HANDLE hEventLog );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DeregisterEventSource( HANDLE hEventLog )
+{
+    static FN_DeregisterEventSource *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeregisterEventSource", &g_Kernel32);
+    return pfn( hEventLog );
+}
+
+typedef BOOL WINAPI FN_NotifyChangeEventLog( HANDLE hEventLog, HANDLE hEvent );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_NotifyChangeEventLog( HANDLE hEventLog, HANDLE hEvent )
+{
+    static FN_NotifyChangeEventLog *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "NotifyChangeEventLog", &g_Kernel32);
+    return pfn( hEventLog, hEvent );
+}
+
+typedef BOOL WINAPI FN_GetNumberOfEventLogRecords( HANDLE hEventLog, PDWORD NumberOfRecords );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetNumberOfEventLogRecords( HANDLE hEventLog, PDWORD NumberOfRecords )
+{
+    static FN_GetNumberOfEventLogRecords *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNumberOfEventLogRecords", &g_Kernel32);
+    return pfn( hEventLog, NumberOfRecords );
+}
+
+typedef BOOL WINAPI FN_GetOldestEventLogRecord( HANDLE hEventLog, PDWORD OldestRecord );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetOldestEventLogRecord( HANDLE hEventLog, PDWORD OldestRecord )
+{
+    static FN_GetOldestEventLogRecord *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetOldestEventLogRecord", &g_Kernel32);
+    return pfn( hEventLog, OldestRecord );
+}
+
+typedef HANDLE WINAPI FN_OpenEventLogA( LPCSTR lpUNCServerName, LPCSTR lpSourceName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenEventLogA( LPCSTR lpUNCServerName, LPCSTR lpSourceName )
+{
+    static FN_OpenEventLogA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenEventLogA", &g_Kernel32);
+    return pfn( lpUNCServerName, lpSourceName );
+}
+
+typedef HANDLE WINAPI FN_OpenEventLogW( LPCWSTR lpUNCServerName, LPCWSTR lpSourceName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenEventLogW( LPCWSTR lpUNCServerName, LPCWSTR lpSourceName )
+{
+    static FN_OpenEventLogW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenEventLogW", &g_Kernel32);
+    return pfn( lpUNCServerName, lpSourceName );
+}
+
+typedef HANDLE WINAPI FN_RegisterEventSourceA( LPCSTR lpUNCServerName, LPCSTR lpSourceName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_RegisterEventSourceA( LPCSTR lpUNCServerName, LPCSTR lpSourceName )
+{
+    static FN_RegisterEventSourceA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RegisterEventSourceA", &g_Kernel32);
+    return pfn( lpUNCServerName, lpSourceName );
+}
+
+typedef HANDLE WINAPI FN_RegisterEventSourceW( LPCWSTR lpUNCServerName, LPCWSTR lpSourceName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_RegisterEventSourceW( LPCWSTR lpUNCServerName, LPCWSTR lpSourceName )
+{
+    static FN_RegisterEventSourceW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RegisterEventSourceW", &g_Kernel32);
+    return pfn( lpUNCServerName, lpSourceName );
+}
+
+typedef HANDLE WINAPI FN_OpenBackupEventLogA( LPCSTR lpUNCServerName, LPCSTR lpFileName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenBackupEventLogA( LPCSTR lpUNCServerName, LPCSTR lpFileName )
+{
+    static FN_OpenBackupEventLogA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenBackupEventLogA", &g_Kernel32);
+    return pfn( lpUNCServerName, lpFileName );
+}
+
+typedef HANDLE WINAPI FN_OpenBackupEventLogW( LPCWSTR lpUNCServerName, LPCWSTR lpFileName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenBackupEventLogW( LPCWSTR lpUNCServerName, LPCWSTR lpFileName )
+{
+    static FN_OpenBackupEventLogW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenBackupEventLogW", &g_Kernel32);
+    return pfn( lpUNCServerName, lpFileName );
+}
+
+typedef BOOL WINAPI FN_ReadEventLogA( HANDLE hEventLog, DWORD dwReadFlags, DWORD dwRecordOffset, LPVOID lpBuffer, DWORD nNumberOfBytesToRead, DWORD * pnBytesRead, DWORD * pnMinNumberOfBytesNeeded );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadEventLogA( HANDLE hEventLog, DWORD dwReadFlags, DWORD dwRecordOffset, LPVOID lpBuffer, DWORD nNumberOfBytesToRead, DWORD * pnBytesRead, DWORD * pnMinNumberOfBytesNeeded )
+{
+    static FN_ReadEventLogA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadEventLogA", &g_Kernel32);
+    return pfn( hEventLog, dwReadFlags, dwRecordOffset, lpBuffer, nNumberOfBytesToRead, pnBytesRead, pnMinNumberOfBytesNeeded );
+}
+
+typedef BOOL WINAPI FN_ReadEventLogW( HANDLE hEventLog, DWORD dwReadFlags, DWORD dwRecordOffset, LPVOID lpBuffer, DWORD nNumberOfBytesToRead, DWORD * pnBytesRead, DWORD * pnMinNumberOfBytesNeeded );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadEventLogW( HANDLE hEventLog, DWORD dwReadFlags, DWORD dwRecordOffset, LPVOID lpBuffer, DWORD nNumberOfBytesToRead, DWORD * pnBytesRead, DWORD * pnMinNumberOfBytesNeeded )
+{
+    static FN_ReadEventLogW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadEventLogW", &g_Kernel32);
+    return pfn( hEventLog, dwReadFlags, dwRecordOffset, lpBuffer, nNumberOfBytesToRead, pnBytesRead, pnMinNumberOfBytesNeeded );
+}
+
+typedef BOOL WINAPI FN_ReportEventA( HANDLE hEventLog, WORD wType, WORD wCategory, DWORD dwEventID, PSID lpUserSid, WORD wNumStrings, DWORD dwDataSize, LPCSTR * lpStrings, LPVOID lpRawData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReportEventA( HANDLE hEventLog, WORD wType, WORD wCategory, DWORD dwEventID, PSID lpUserSid, WORD wNumStrings, DWORD dwDataSize, LPCSTR * lpStrings, LPVOID lpRawData )
+{
+    static FN_ReportEventA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReportEventA", &g_Kernel32);
+    return pfn( hEventLog, wType, wCategory, dwEventID, lpUserSid, wNumStrings, dwDataSize, lpStrings, lpRawData );
+}
+
+typedef BOOL WINAPI FN_ReportEventW( HANDLE hEventLog, WORD wType, WORD wCategory, DWORD dwEventID, PSID lpUserSid, WORD wNumStrings, DWORD dwDataSize, LPCWSTR * lpStrings, LPVOID lpRawData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReportEventW( HANDLE hEventLog, WORD wType, WORD wCategory, DWORD dwEventID, PSID lpUserSid, WORD wNumStrings, DWORD dwDataSize, LPCWSTR * lpStrings, LPVOID lpRawData )
+{
+    static FN_ReportEventW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReportEventW", &g_Kernel32);
+    return pfn( hEventLog, wType, wCategory, dwEventID, lpUserSid, wNumStrings, dwDataSize, lpStrings, lpRawData );
+}
+
+typedef BOOL WINAPI FN_GetEventLogInformation( HANDLE hEventLog, DWORD dwInfoLevel, LPVOID lpBuffer, DWORD cbBufSize, LPDWORD pcbBytesNeeded );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetEventLogInformation( HANDLE hEventLog, DWORD dwInfoLevel, LPVOID lpBuffer, DWORD cbBufSize, LPDWORD pcbBytesNeeded )
+{
+    static FN_GetEventLogInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetEventLogInformation", &g_Kernel32);
+    return pfn( hEventLog, dwInfoLevel, lpBuffer, cbBufSize, pcbBytesNeeded );
+}
+
+typedef BOOL WINAPI FN_DuplicateToken( HANDLE ExistingTokenHandle, SECURITY_IMPERSONATION_LEVEL ImpersonationLevel, PHANDLE DuplicateTokenHandle );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DuplicateToken( HANDLE ExistingTokenHandle, SECURITY_IMPERSONATION_LEVEL ImpersonationLevel, PHANDLE DuplicateTokenHandle )
+{
+    static FN_DuplicateToken *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DuplicateToken", &g_Kernel32);
+    return pfn( ExistingTokenHandle, ImpersonationLevel, DuplicateTokenHandle );
+}
+
+typedef BOOL WINAPI FN_GetKernelObjectSecurity( HANDLE Handle, SECURITY_INFORMATION RequestedInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor, DWORD nLength, LPDWORD lpnLengthNeeded );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetKernelObjectSecurity( HANDLE Handle, SECURITY_INFORMATION RequestedInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor, DWORD nLength, LPDWORD lpnLengthNeeded )
+{
+    static FN_GetKernelObjectSecurity *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetKernelObjectSecurity", &g_Kernel32);
+    return pfn( Handle, RequestedInformation, pSecurityDescriptor, nLength, lpnLengthNeeded );
+}
+
+typedef BOOL WINAPI FN_ImpersonateNamedPipeClient( HANDLE hNamedPipe );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ImpersonateNamedPipeClient( HANDLE hNamedPipe )
+{
+    static FN_ImpersonateNamedPipeClient *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ImpersonateNamedPipeClient", &g_Kernel32);
+    return pfn( hNamedPipe );
+}
+
+typedef BOOL WINAPI FN_ImpersonateSelf( SECURITY_IMPERSONATION_LEVEL ImpersonationLevel );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ImpersonateSelf( SECURITY_IMPERSONATION_LEVEL ImpersonationLevel )
+{
+    static FN_ImpersonateSelf *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ImpersonateSelf", &g_Kernel32);
+    return pfn( ImpersonationLevel );
+}
+
+typedef BOOL WINAPI FN_RevertToSelf( VOID );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_RevertToSelf( VOID )
+{
+    static FN_RevertToSelf *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RevertToSelf", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL APIENTRY FN_SetThreadToken( PHANDLE Thread, HANDLE Token );
+__declspec(dllexport) BOOL APIENTRY kPrf2Wrap_SetThreadToken( PHANDLE Thread, HANDLE Token )
+{
+    static FN_SetThreadToken *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetThreadToken", &g_Kernel32);
+    return pfn( Thread, Token );
+}
+
+typedef BOOL WINAPI FN_AccessCheck( PSECURITY_DESCRIPTOR pSecurityDescriptor, HANDLE ClientToken, DWORD DesiredAccess, PGENERIC_MAPPING GenericMapping, PPRIVILEGE_SET PrivilegeSet, LPDWORD PrivilegeSetLength, LPDWORD GrantedAccess, LPBOOL AccessStatus );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AccessCheck( PSECURITY_DESCRIPTOR pSecurityDescriptor, HANDLE ClientToken, DWORD DesiredAccess, PGENERIC_MAPPING GenericMapping, PPRIVILEGE_SET PrivilegeSet, LPDWORD PrivilegeSetLength, LPDWORD GrantedAccess, LPBOOL AccessStatus )
+{
+    static FN_AccessCheck *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AccessCheck", &g_Kernel32);
+    return pfn( pSecurityDescriptor, ClientToken, DesiredAccess, GenericMapping, PrivilegeSet, PrivilegeSetLength, GrantedAccess, AccessStatus );
+}
+
+typedef BOOL WINAPI FN_AccessCheckByType( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID PrincipalSelfSid, HANDLE ClientToken, DWORD DesiredAccess, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, PPRIVILEGE_SET PrivilegeSet, LPDWORD PrivilegeSetLength, LPDWORD GrantedAccess, LPBOOL AccessStatus );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AccessCheckByType( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID PrincipalSelfSid, HANDLE ClientToken, DWORD DesiredAccess, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, PPRIVILEGE_SET PrivilegeSet, LPDWORD PrivilegeSetLength, LPDWORD GrantedAccess, LPBOOL AccessStatus )
+{
+    static FN_AccessCheckByType *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AccessCheckByType", &g_Kernel32);
+    return pfn( pSecurityDescriptor, PrincipalSelfSid, ClientToken, DesiredAccess, ObjectTypeList, ObjectTypeListLength, GenericMapping, PrivilegeSet, PrivilegeSetLength, GrantedAccess, AccessStatus );
+}
+
+typedef BOOL WINAPI FN_AccessCheckByTypeResultList( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID PrincipalSelfSid, HANDLE ClientToken, DWORD DesiredAccess, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, PPRIVILEGE_SET PrivilegeSet, LPDWORD PrivilegeSetLength, LPDWORD GrantedAccessList, LPDWORD AccessStatusList );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AccessCheckByTypeResultList( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID PrincipalSelfSid, HANDLE ClientToken, DWORD DesiredAccess, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, PPRIVILEGE_SET PrivilegeSet, LPDWORD PrivilegeSetLength, LPDWORD GrantedAccessList, LPDWORD AccessStatusList )
+{
+    static FN_AccessCheckByTypeResultList *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AccessCheckByTypeResultList", &g_Kernel32);
+    return pfn( pSecurityDescriptor, PrincipalSelfSid, ClientToken, DesiredAccess, ObjectTypeList, ObjectTypeListLength, GenericMapping, PrivilegeSet, PrivilegeSetLength, GrantedAccessList, AccessStatusList );
+}
+
+typedef BOOL WINAPI FN_OpenProcessToken( HANDLE ProcessHandle, DWORD DesiredAccess, PHANDLE TokenHandle );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_OpenProcessToken( HANDLE ProcessHandle, DWORD DesiredAccess, PHANDLE TokenHandle )
+{
+    static FN_OpenProcessToken *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenProcessToken", &g_Kernel32);
+    return pfn( ProcessHandle, DesiredAccess, TokenHandle );
+}
+
+typedef BOOL WINAPI FN_OpenThreadToken( HANDLE ThreadHandle, DWORD DesiredAccess, BOOL OpenAsSelf, PHANDLE TokenHandle );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_OpenThreadToken( HANDLE ThreadHandle, DWORD DesiredAccess, BOOL OpenAsSelf, PHANDLE TokenHandle )
+{
+    static FN_OpenThreadToken *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenThreadToken", &g_Kernel32);
+    return pfn( ThreadHandle, DesiredAccess, OpenAsSelf, TokenHandle );
+}
+
+typedef BOOL WINAPI FN_GetTokenInformation( HANDLE TokenHandle, TOKEN_INFORMATION_CLASS TokenInformationClass, LPVOID TokenInformation, DWORD TokenInformationLength, PDWORD ReturnLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetTokenInformation( HANDLE TokenHandle, TOKEN_INFORMATION_CLASS TokenInformationClass, LPVOID TokenInformation, DWORD TokenInformationLength, PDWORD ReturnLength )
+{
+    static FN_GetTokenInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetTokenInformation", &g_Kernel32);
+    return pfn( TokenHandle, TokenInformationClass, TokenInformation, TokenInformationLength, ReturnLength );
+}
+
+typedef BOOL WINAPI FN_SetTokenInformation( HANDLE TokenHandle, TOKEN_INFORMATION_CLASS TokenInformationClass, LPVOID TokenInformation, DWORD TokenInformationLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetTokenInformation( HANDLE TokenHandle, TOKEN_INFORMATION_CLASS TokenInformationClass, LPVOID TokenInformation, DWORD TokenInformationLength )
+{
+    static FN_SetTokenInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetTokenInformation", &g_Kernel32);
+    return pfn( TokenHandle, TokenInformationClass, TokenInformation, TokenInformationLength );
+}
+
+typedef BOOL WINAPI FN_AdjustTokenPrivileges( HANDLE TokenHandle, BOOL DisableAllPrivileges, PTOKEN_PRIVILEGES NewState, DWORD BufferLength, PTOKEN_PRIVILEGES PreviousState, PDWORD ReturnLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AdjustTokenPrivileges( HANDLE TokenHandle, BOOL DisableAllPrivileges, PTOKEN_PRIVILEGES NewState, DWORD BufferLength, PTOKEN_PRIVILEGES PreviousState, PDWORD ReturnLength )
+{
+    static FN_AdjustTokenPrivileges *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AdjustTokenPrivileges", &g_Kernel32);
+    return pfn( TokenHandle, DisableAllPrivileges, NewState, BufferLength, PreviousState, ReturnLength );
+}
+
+typedef BOOL WINAPI FN_AdjustTokenGroups( HANDLE TokenHandle, BOOL ResetToDefault, PTOKEN_GROUPS NewState, DWORD BufferLength, PTOKEN_GROUPS PreviousState, PDWORD ReturnLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AdjustTokenGroups( HANDLE TokenHandle, BOOL ResetToDefault, PTOKEN_GROUPS NewState, DWORD BufferLength, PTOKEN_GROUPS PreviousState, PDWORD ReturnLength )
+{
+    static FN_AdjustTokenGroups *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AdjustTokenGroups", &g_Kernel32);
+    return pfn( TokenHandle, ResetToDefault, NewState, BufferLength, PreviousState, ReturnLength );
+}
+
+typedef BOOL WINAPI FN_PrivilegeCheck( HANDLE ClientToken, PPRIVILEGE_SET RequiredPrivileges, LPBOOL pfResult );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_PrivilegeCheck( HANDLE ClientToken, PPRIVILEGE_SET RequiredPrivileges, LPBOOL pfResult )
+{
+    static FN_PrivilegeCheck *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "PrivilegeCheck", &g_Kernel32);
+    return pfn( ClientToken, RequiredPrivileges, pfResult );
+}
+
+typedef BOOL WINAPI FN_AccessCheckAndAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, LPSTR ObjectTypeName, LPSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, DWORD DesiredAccess, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPBOOL AccessStatus, LPBOOL pfGenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AccessCheckAndAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, LPSTR ObjectTypeName, LPSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, DWORD DesiredAccess, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPBOOL AccessStatus, LPBOOL pfGenerateOnClose )
+{
+    static FN_AccessCheckAndAuditAlarmA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AccessCheckAndAuditAlarmA", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, ObjectTypeName, ObjectName, SecurityDescriptor, DesiredAccess, GenericMapping, ObjectCreation, GrantedAccess, AccessStatus, pfGenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_AccessCheckAndAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, LPWSTR ObjectTypeName, LPWSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, DWORD DesiredAccess, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPBOOL AccessStatus, LPBOOL pfGenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AccessCheckAndAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, LPWSTR ObjectTypeName, LPWSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, DWORD DesiredAccess, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPBOOL AccessStatus, LPBOOL pfGenerateOnClose )
+{
+    static FN_AccessCheckAndAuditAlarmW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AccessCheckAndAuditAlarmW", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, ObjectTypeName, ObjectName, SecurityDescriptor, DesiredAccess, GenericMapping, ObjectCreation, GrantedAccess, AccessStatus, pfGenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_AccessCheckByTypeAndAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, LPCSTR ObjectTypeName, LPCSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, PSID PrincipalSelfSid, DWORD DesiredAccess, AUDIT_EVENT_TYPE AuditType, DWORD Flags, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPBOOL AccessStatus, LPBOOL pfGenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AccessCheckByTypeAndAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, LPCSTR ObjectTypeName, LPCSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, PSID PrincipalSelfSid, DWORD DesiredAccess, AUDIT_EVENT_TYPE AuditType, DWORD Flags, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPBOOL AccessStatus, LPBOOL pfGenerateOnClose )
+{
+    static FN_AccessCheckByTypeAndAuditAlarmA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AccessCheckByTypeAndAuditAlarmA", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, ObjectTypeName, ObjectName, SecurityDescriptor, PrincipalSelfSid, DesiredAccess, AuditType, Flags, ObjectTypeList, ObjectTypeListLength, GenericMapping, ObjectCreation, GrantedAccess, AccessStatus, pfGenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_AccessCheckByTypeAndAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, LPCWSTR ObjectTypeName, LPCWSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, PSID PrincipalSelfSid, DWORD DesiredAccess, AUDIT_EVENT_TYPE AuditType, DWORD Flags, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPBOOL AccessStatus, LPBOOL pfGenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AccessCheckByTypeAndAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, LPCWSTR ObjectTypeName, LPCWSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, PSID PrincipalSelfSid, DWORD DesiredAccess, AUDIT_EVENT_TYPE AuditType, DWORD Flags, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPBOOL AccessStatus, LPBOOL pfGenerateOnClose )
+{
+    static FN_AccessCheckByTypeAndAuditAlarmW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AccessCheckByTypeAndAuditAlarmW", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, ObjectTypeName, ObjectName, SecurityDescriptor, PrincipalSelfSid, DesiredAccess, AuditType, Flags, ObjectTypeList, ObjectTypeListLength, GenericMapping, ObjectCreation, GrantedAccess, AccessStatus, pfGenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_AccessCheckByTypeResultListAndAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, LPCSTR ObjectTypeName, LPCSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, PSID PrincipalSelfSid, DWORD DesiredAccess, AUDIT_EVENT_TYPE AuditType, DWORD Flags, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPDWORD AccessStatusList, LPBOOL pfGenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AccessCheckByTypeResultListAndAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, LPCSTR ObjectTypeName, LPCSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, PSID PrincipalSelfSid, DWORD DesiredAccess, AUDIT_EVENT_TYPE AuditType, DWORD Flags, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPDWORD AccessStatusList, LPBOOL pfGenerateOnClose )
+{
+    static FN_AccessCheckByTypeResultListAndAuditAlarmA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AccessCheckByTypeResultListAndAuditAlarmA", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, ObjectTypeName, ObjectName, SecurityDescriptor, PrincipalSelfSid, DesiredAccess, AuditType, Flags, ObjectTypeList, ObjectTypeListLength, GenericMapping, ObjectCreation, GrantedAccess, AccessStatusList, pfGenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_AccessCheckByTypeResultListAndAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, LPCWSTR ObjectTypeName, LPCWSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, PSID PrincipalSelfSid, DWORD DesiredAccess, AUDIT_EVENT_TYPE AuditType, DWORD Flags, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPDWORD AccessStatusList, LPBOOL pfGenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AccessCheckByTypeResultListAndAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, LPCWSTR ObjectTypeName, LPCWSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, PSID PrincipalSelfSid, DWORD DesiredAccess, AUDIT_EVENT_TYPE AuditType, DWORD Flags, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPDWORD AccessStatusList, LPBOOL pfGenerateOnClose )
+{
+    static FN_AccessCheckByTypeResultListAndAuditAlarmW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AccessCheckByTypeResultListAndAuditAlarmW", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, ObjectTypeName, ObjectName, SecurityDescriptor, PrincipalSelfSid, DesiredAccess, AuditType, Flags, ObjectTypeList, ObjectTypeListLength, GenericMapping, ObjectCreation, GrantedAccess, AccessStatusList, pfGenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_AccessCheckByTypeResultListAndAuditAlarmByHandleA( LPCSTR SubsystemName, LPVOID HandleId, HANDLE ClientToken, LPCSTR ObjectTypeName, LPCSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, PSID PrincipalSelfSid, DWORD DesiredAccess, AUDIT_EVENT_TYPE AuditType, DWORD Flags, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPDWORD AccessStatusList, LPBOOL pfGenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AccessCheckByTypeResultListAndAuditAlarmByHandleA( LPCSTR SubsystemName, LPVOID HandleId, HANDLE ClientToken, LPCSTR ObjectTypeName, LPCSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, PSID PrincipalSelfSid, DWORD DesiredAccess, AUDIT_EVENT_TYPE AuditType, DWORD Flags, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPDWORD AccessStatusList, LPBOOL pfGenerateOnClose )
+{
+    static FN_AccessCheckByTypeResultListAndAuditAlarmByHandleA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AccessCheckByTypeResultListAndAuditAlarmByHandleA", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, ClientToken, ObjectTypeName, ObjectName, SecurityDescriptor, PrincipalSelfSid, DesiredAccess, AuditType, Flags, ObjectTypeList, ObjectTypeListLength, GenericMapping, ObjectCreation, GrantedAccess, AccessStatusList, pfGenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_AccessCheckByTypeResultListAndAuditAlarmByHandleW( LPCWSTR SubsystemName, LPVOID HandleId, HANDLE ClientToken, LPCWSTR ObjectTypeName, LPCWSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, PSID PrincipalSelfSid, DWORD DesiredAccess, AUDIT_EVENT_TYPE AuditType, DWORD Flags, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPDWORD AccessStatusList, LPBOOL pfGenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AccessCheckByTypeResultListAndAuditAlarmByHandleW( LPCWSTR SubsystemName, LPVOID HandleId, HANDLE ClientToken, LPCWSTR ObjectTypeName, LPCWSTR ObjectName, PSECURITY_DESCRIPTOR SecurityDescriptor, PSID PrincipalSelfSid, DWORD DesiredAccess, AUDIT_EVENT_TYPE AuditType, DWORD Flags, POBJECT_TYPE_LIST ObjectTypeList, DWORD ObjectTypeListLength, PGENERIC_MAPPING GenericMapping, BOOL ObjectCreation, LPDWORD GrantedAccess, LPDWORD AccessStatusList, LPBOOL pfGenerateOnClose )
+{
+    static FN_AccessCheckByTypeResultListAndAuditAlarmByHandleW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AccessCheckByTypeResultListAndAuditAlarmByHandleW", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, ClientToken, ObjectTypeName, ObjectName, SecurityDescriptor, PrincipalSelfSid, DesiredAccess, AuditType, Flags, ObjectTypeList, ObjectTypeListLength, GenericMapping, ObjectCreation, GrantedAccess, AccessStatusList, pfGenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_ObjectOpenAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, LPSTR ObjectTypeName, LPSTR ObjectName, PSECURITY_DESCRIPTOR pSecurityDescriptor, HANDLE ClientToken, DWORD DesiredAccess, DWORD GrantedAccess, PPRIVILEGE_SET Privileges, BOOL ObjectCreation, BOOL AccessGranted, LPBOOL GenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ObjectOpenAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, LPSTR ObjectTypeName, LPSTR ObjectName, PSECURITY_DESCRIPTOR pSecurityDescriptor, HANDLE ClientToken, DWORD DesiredAccess, DWORD GrantedAccess, PPRIVILEGE_SET Privileges, BOOL ObjectCreation, BOOL AccessGranted, LPBOOL GenerateOnClose )
+{
+    static FN_ObjectOpenAuditAlarmA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ObjectOpenAuditAlarmA", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, ObjectTypeName, ObjectName, pSecurityDescriptor, ClientToken, DesiredAccess, GrantedAccess, Privileges, ObjectCreation, AccessGranted, GenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_ObjectOpenAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, LPWSTR ObjectTypeName, LPWSTR ObjectName, PSECURITY_DESCRIPTOR pSecurityDescriptor, HANDLE ClientToken, DWORD DesiredAccess, DWORD GrantedAccess, PPRIVILEGE_SET Privileges, BOOL ObjectCreation, BOOL AccessGranted, LPBOOL GenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ObjectOpenAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, LPWSTR ObjectTypeName, LPWSTR ObjectName, PSECURITY_DESCRIPTOR pSecurityDescriptor, HANDLE ClientToken, DWORD DesiredAccess, DWORD GrantedAccess, PPRIVILEGE_SET Privileges, BOOL ObjectCreation, BOOL AccessGranted, LPBOOL GenerateOnClose )
+{
+    static FN_ObjectOpenAuditAlarmW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ObjectOpenAuditAlarmW", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, ObjectTypeName, ObjectName, pSecurityDescriptor, ClientToken, DesiredAccess, GrantedAccess, Privileges, ObjectCreation, AccessGranted, GenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_ObjectPrivilegeAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, HANDLE ClientToken, DWORD DesiredAccess, PPRIVILEGE_SET Privileges, BOOL AccessGranted );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ObjectPrivilegeAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, HANDLE ClientToken, DWORD DesiredAccess, PPRIVILEGE_SET Privileges, BOOL AccessGranted )
+{
+    static FN_ObjectPrivilegeAuditAlarmA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ObjectPrivilegeAuditAlarmA", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, ClientToken, DesiredAccess, Privileges, AccessGranted );
+}
+
+typedef BOOL WINAPI FN_ObjectPrivilegeAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, HANDLE ClientToken, DWORD DesiredAccess, PPRIVILEGE_SET Privileges, BOOL AccessGranted );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ObjectPrivilegeAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, HANDLE ClientToken, DWORD DesiredAccess, PPRIVILEGE_SET Privileges, BOOL AccessGranted )
+{
+    static FN_ObjectPrivilegeAuditAlarmW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ObjectPrivilegeAuditAlarmW", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, ClientToken, DesiredAccess, Privileges, AccessGranted );
+}
+
+typedef BOOL WINAPI FN_ObjectCloseAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, BOOL GenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ObjectCloseAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, BOOL GenerateOnClose )
+{
+    static FN_ObjectCloseAuditAlarmA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ObjectCloseAuditAlarmA", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, GenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_ObjectCloseAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, BOOL GenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ObjectCloseAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, BOOL GenerateOnClose )
+{
+    static FN_ObjectCloseAuditAlarmW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ObjectCloseAuditAlarmW", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, GenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_ObjectDeleteAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, BOOL GenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ObjectDeleteAuditAlarmA( LPCSTR SubsystemName, LPVOID HandleId, BOOL GenerateOnClose )
+{
+    static FN_ObjectDeleteAuditAlarmA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ObjectDeleteAuditAlarmA", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, GenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_ObjectDeleteAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, BOOL GenerateOnClose );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ObjectDeleteAuditAlarmW( LPCWSTR SubsystemName, LPVOID HandleId, BOOL GenerateOnClose )
+{
+    static FN_ObjectDeleteAuditAlarmW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ObjectDeleteAuditAlarmW", &g_Kernel32);
+    return pfn( SubsystemName, HandleId, GenerateOnClose );
+}
+
+typedef BOOL WINAPI FN_PrivilegedServiceAuditAlarmA( LPCSTR SubsystemName, LPCSTR ServiceName, HANDLE ClientToken, PPRIVILEGE_SET Privileges, BOOL AccessGranted );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_PrivilegedServiceAuditAlarmA( LPCSTR SubsystemName, LPCSTR ServiceName, HANDLE ClientToken, PPRIVILEGE_SET Privileges, BOOL AccessGranted )
+{
+    static FN_PrivilegedServiceAuditAlarmA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "PrivilegedServiceAuditAlarmA", &g_Kernel32);
+    return pfn( SubsystemName, ServiceName, ClientToken, Privileges, AccessGranted );
+}
+
+typedef BOOL WINAPI FN_PrivilegedServiceAuditAlarmW( LPCWSTR SubsystemName, LPCWSTR ServiceName, HANDLE ClientToken, PPRIVILEGE_SET Privileges, BOOL AccessGranted );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_PrivilegedServiceAuditAlarmW( LPCWSTR SubsystemName, LPCWSTR ServiceName, HANDLE ClientToken, PPRIVILEGE_SET Privileges, BOOL AccessGranted )
+{
+    static FN_PrivilegedServiceAuditAlarmW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "PrivilegedServiceAuditAlarmW", &g_Kernel32);
+    return pfn( SubsystemName, ServiceName, ClientToken, Privileges, AccessGranted );
+}
+
+typedef BOOL WINAPI FN_IsWellKnownSid( PSID pSid, WELL_KNOWN_SID_TYPE WellKnownSidType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsWellKnownSid( PSID pSid, WELL_KNOWN_SID_TYPE WellKnownSidType )
+{
+    static FN_IsWellKnownSid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsWellKnownSid", &g_Kernel32);
+    return pfn( pSid, WellKnownSidType );
+}
+
+typedef BOOL WINAPI FN_CreateWellKnownSid( WELL_KNOWN_SID_TYPE WellKnownSidType, PSID DomainSid, PSID pSid, DWORD * cbSid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateWellKnownSid( WELL_KNOWN_SID_TYPE WellKnownSidType, PSID DomainSid, PSID pSid, DWORD * cbSid )
+{
+    static FN_CreateWellKnownSid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateWellKnownSid", &g_Kernel32);
+    return pfn( WellKnownSidType, DomainSid, pSid, cbSid );
+}
+
+typedef BOOL WINAPI FN_EqualDomainSid( PSID pSid1, PSID pSid2, BOOL * pfEqual );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EqualDomainSid( PSID pSid1, PSID pSid2, BOOL * pfEqual )
+{
+    static FN_EqualDomainSid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EqualDomainSid", &g_Kernel32);
+    return pfn( pSid1, pSid2, pfEqual );
+}
+
+typedef BOOL WINAPI FN_GetWindowsAccountDomainSid( PSID pSid, PSID pDomainSid, DWORD * cbDomainSid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetWindowsAccountDomainSid( PSID pSid, PSID pDomainSid, DWORD * cbDomainSid )
+{
+    static FN_GetWindowsAccountDomainSid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetWindowsAccountDomainSid", &g_Kernel32);
+    return pfn( pSid, pDomainSid, cbDomainSid );
+}
+
+typedef BOOL WINAPI FN_IsValidSid( PSID pSid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsValidSid( PSID pSid )
+{
+    static FN_IsValidSid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsValidSid", &g_Kernel32);
+    return pfn( pSid );
+}
+
+typedef BOOL WINAPI FN_EqualSid( PSID pSid1, PSID pSid2 );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EqualSid( PSID pSid1, PSID pSid2 )
+{
+    static FN_EqualSid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EqualSid", &g_Kernel32);
+    return pfn( pSid1, pSid2 );
+}
+
+typedef BOOL WINAPI FN_EqualPrefixSid( PSID pSid1, PSID pSid2 );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EqualPrefixSid( PSID pSid1, PSID pSid2 )
+{
+    static FN_EqualPrefixSid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EqualPrefixSid", &g_Kernel32);
+    return pfn( pSid1, pSid2 );
+}
+
+typedef DWORD WINAPI FN_GetSidLengthRequired( UCHAR nSubAuthorityCount );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetSidLengthRequired( UCHAR nSubAuthorityCount )
+{
+    static FN_GetSidLengthRequired *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSidLengthRequired", &g_Kernel32);
+    return pfn( nSubAuthorityCount );
+}
+
+typedef BOOL WINAPI FN_AllocateAndInitializeSid( PSID_IDENTIFIER_AUTHORITY pIdentifierAuthority, BYTE nSubAuthorityCount, DWORD nSubAuthority0, DWORD nSubAuthority1, DWORD nSubAuthority2, DWORD nSubAuthority3, DWORD nSubAuthority4, DWORD nSubAuthority5, DWORD nSubAuthority6, DWORD nSubAuthority7, PSID * pSid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AllocateAndInitializeSid( PSID_IDENTIFIER_AUTHORITY pIdentifierAuthority, BYTE nSubAuthorityCount, DWORD nSubAuthority0, DWORD nSubAuthority1, DWORD nSubAuthority2, DWORD nSubAuthority3, DWORD nSubAuthority4, DWORD nSubAuthority5, DWORD nSubAuthority6, DWORD nSubAuthority7, PSID * pSid )
+{
+    static FN_AllocateAndInitializeSid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AllocateAndInitializeSid", &g_Kernel32);
+    return pfn( pIdentifierAuthority, nSubAuthorityCount, nSubAuthority0, nSubAuthority1, nSubAuthority2, nSubAuthority3, nSubAuthority4, nSubAuthority5, nSubAuthority6, nSubAuthority7, pSid );
+}
+
+typedef PVOID WINAPI FN_FreeSid( PSID pSid );
+__declspec(dllexport) PVOID WINAPI kPrf2Wrap_FreeSid( PSID pSid )
+{
+    static FN_FreeSid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FreeSid", &g_Kernel32);
+    return pfn( pSid );
+}
+
+typedef BOOL WINAPI FN_InitializeSid( PSID Sid, PSID_IDENTIFIER_AUTHORITY pIdentifierAuthority, BYTE nSubAuthorityCount );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_InitializeSid( PSID Sid, PSID_IDENTIFIER_AUTHORITY pIdentifierAuthority, BYTE nSubAuthorityCount )
+{
+    static FN_InitializeSid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InitializeSid", &g_Kernel32);
+    return pfn( Sid, pIdentifierAuthority, nSubAuthorityCount );
+}
+
+typedef PSID_IDENTIFIER_AUTHORITY WINAPI FN_GetSidIdentifierAuthority( PSID pSid );
+__declspec(dllexport) PSID_IDENTIFIER_AUTHORITY WINAPI kPrf2Wrap_GetSidIdentifierAuthority( PSID pSid )
+{
+    static FN_GetSidIdentifierAuthority *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSidIdentifierAuthority", &g_Kernel32);
+    return pfn( pSid );
+}
+
+typedef PDWORD WINAPI FN_GetSidSubAuthority( PSID pSid, DWORD nSubAuthority );
+__declspec(dllexport) PDWORD WINAPI kPrf2Wrap_GetSidSubAuthority( PSID pSid, DWORD nSubAuthority )
+{
+    static FN_GetSidSubAuthority *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSidSubAuthority", &g_Kernel32);
+    return pfn( pSid, nSubAuthority );
+}
+
+typedef PUCHAR WINAPI FN_GetSidSubAuthorityCount( PSID pSid );
+__declspec(dllexport) PUCHAR WINAPI kPrf2Wrap_GetSidSubAuthorityCount( PSID pSid )
+{
+    static FN_GetSidSubAuthorityCount *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSidSubAuthorityCount", &g_Kernel32);
+    return pfn( pSid );
+}
+
+typedef DWORD WINAPI FN_GetLengthSid( PSID pSid );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetLengthSid( PSID pSid )
+{
+    static FN_GetLengthSid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLengthSid", &g_Kernel32);
+    return pfn( pSid );
+}
+
+typedef BOOL WINAPI FN_CopySid( DWORD nDestinationSidLength, PSID pDestinationSid, PSID pSourceSid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CopySid( DWORD nDestinationSidLength, PSID pDestinationSid, PSID pSourceSid )
+{
+    static FN_CopySid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CopySid", &g_Kernel32);
+    return pfn( nDestinationSidLength, pDestinationSid, pSourceSid );
+}
+
+typedef BOOL WINAPI FN_AreAllAccessesGranted( DWORD GrantedAccess, DWORD DesiredAccess );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AreAllAccessesGranted( DWORD GrantedAccess, DWORD DesiredAccess )
+{
+    static FN_AreAllAccessesGranted *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AreAllAccessesGranted", &g_Kernel32);
+    return pfn( GrantedAccess, DesiredAccess );
+}
+
+typedef BOOL WINAPI FN_AreAnyAccessesGranted( DWORD GrantedAccess, DWORD DesiredAccess );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AreAnyAccessesGranted( DWORD GrantedAccess, DWORD DesiredAccess )
+{
+    static FN_AreAnyAccessesGranted *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AreAnyAccessesGranted", &g_Kernel32);
+    return pfn( GrantedAccess, DesiredAccess );
+}
+
+typedef VOID WINAPI FN_MapGenericMask( PDWORD AccessMask, PGENERIC_MAPPING GenericMapping );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_MapGenericMask( PDWORD AccessMask, PGENERIC_MAPPING GenericMapping )
+{
+    static FN_MapGenericMask *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MapGenericMask", &g_Kernel32);
+    pfn( AccessMask, GenericMapping );
+}
+
+typedef BOOL WINAPI FN_IsValidAcl( PACL pAcl );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsValidAcl( PACL pAcl )
+{
+    static FN_IsValidAcl *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsValidAcl", &g_Kernel32);
+    return pfn( pAcl );
+}
+
+typedef BOOL WINAPI FN_InitializeAcl( PACL pAcl, DWORD nAclLength, DWORD dwAclRevision );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_InitializeAcl( PACL pAcl, DWORD nAclLength, DWORD dwAclRevision )
+{
+    static FN_InitializeAcl *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InitializeAcl", &g_Kernel32);
+    return pfn( pAcl, nAclLength, dwAclRevision );
+}
+
+typedef BOOL WINAPI FN_GetAclInformation( PACL pAcl, LPVOID pAclInformation, DWORD nAclInformationLength, ACL_INFORMATION_CLASS dwAclInformationClass );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetAclInformation( PACL pAcl, LPVOID pAclInformation, DWORD nAclInformationLength, ACL_INFORMATION_CLASS dwAclInformationClass )
+{
+    static FN_GetAclInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetAclInformation", &g_Kernel32);
+    return pfn( pAcl, pAclInformation, nAclInformationLength, dwAclInformationClass );
+}
+
+typedef BOOL WINAPI FN_SetAclInformation( PACL pAcl, LPVOID pAclInformation, DWORD nAclInformationLength, ACL_INFORMATION_CLASS dwAclInformationClass );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetAclInformation( PACL pAcl, LPVOID pAclInformation, DWORD nAclInformationLength, ACL_INFORMATION_CLASS dwAclInformationClass )
+{
+    static FN_SetAclInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetAclInformation", &g_Kernel32);
+    return pfn( pAcl, pAclInformation, nAclInformationLength, dwAclInformationClass );
+}
+
+typedef BOOL WINAPI FN_AddAce( PACL pAcl, DWORD dwAceRevision, DWORD dwStartingAceIndex, LPVOID pAceList, DWORD nAceListLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AddAce( PACL pAcl, DWORD dwAceRevision, DWORD dwStartingAceIndex, LPVOID pAceList, DWORD nAceListLength )
+{
+    static FN_AddAce *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddAce", &g_Kernel32);
+    return pfn( pAcl, dwAceRevision, dwStartingAceIndex, pAceList, nAceListLength );
+}
+
+typedef BOOL WINAPI FN_DeleteAce( PACL pAcl, DWORD dwAceIndex );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DeleteAce( PACL pAcl, DWORD dwAceIndex )
+{
+    static FN_DeleteAce *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeleteAce", &g_Kernel32);
+    return pfn( pAcl, dwAceIndex );
+}
+
+typedef BOOL WINAPI FN_GetAce( PACL pAcl, DWORD dwAceIndex, LPVOID * pAce );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetAce( PACL pAcl, DWORD dwAceIndex, LPVOID * pAce )
+{
+    static FN_GetAce *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetAce", &g_Kernel32);
+    return pfn( pAcl, dwAceIndex, pAce );
+}
+
+typedef BOOL WINAPI FN_AddAccessAllowedAce( PACL pAcl, DWORD dwAceRevision, DWORD AccessMask, PSID pSid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AddAccessAllowedAce( PACL pAcl, DWORD dwAceRevision, DWORD AccessMask, PSID pSid )
+{
+    static FN_AddAccessAllowedAce *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddAccessAllowedAce", &g_Kernel32);
+    return pfn( pAcl, dwAceRevision, AccessMask, pSid );
+}
+
+typedef BOOL WINAPI FN_AddAccessAllowedAceEx( PACL pAcl, DWORD dwAceRevision, DWORD AceFlags, DWORD AccessMask, PSID pSid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AddAccessAllowedAceEx( PACL pAcl, DWORD dwAceRevision, DWORD AceFlags, DWORD AccessMask, PSID pSid )
+{
+    static FN_AddAccessAllowedAceEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddAccessAllowedAceEx", &g_Kernel32);
+    return pfn( pAcl, dwAceRevision, AceFlags, AccessMask, pSid );
+}
+
+typedef BOOL WINAPI FN_AddAccessDeniedAce( PACL pAcl, DWORD dwAceRevision, DWORD AccessMask, PSID pSid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AddAccessDeniedAce( PACL pAcl, DWORD dwAceRevision, DWORD AccessMask, PSID pSid )
+{
+    static FN_AddAccessDeniedAce *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddAccessDeniedAce", &g_Kernel32);
+    return pfn( pAcl, dwAceRevision, AccessMask, pSid );
+}
+
+typedef BOOL WINAPI FN_AddAccessDeniedAceEx( PACL pAcl, DWORD dwAceRevision, DWORD AceFlags, DWORD AccessMask, PSID pSid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AddAccessDeniedAceEx( PACL pAcl, DWORD dwAceRevision, DWORD AceFlags, DWORD AccessMask, PSID pSid )
+{
+    static FN_AddAccessDeniedAceEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddAccessDeniedAceEx", &g_Kernel32);
+    return pfn( pAcl, dwAceRevision, AceFlags, AccessMask, pSid );
+}
+
+typedef BOOL WINAPI FN_AddAuditAccessAce( PACL pAcl, DWORD dwAceRevision, DWORD dwAccessMask, PSID pSid, BOOL bAuditSuccess, BOOL bAuditFailure );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AddAuditAccessAce( PACL pAcl, DWORD dwAceRevision, DWORD dwAccessMask, PSID pSid, BOOL bAuditSuccess, BOOL bAuditFailure )
+{
+    static FN_AddAuditAccessAce *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddAuditAccessAce", &g_Kernel32);
+    return pfn( pAcl, dwAceRevision, dwAccessMask, pSid, bAuditSuccess, bAuditFailure );
+}
+
+typedef BOOL WINAPI FN_AddAuditAccessAceEx( PACL pAcl, DWORD dwAceRevision, DWORD AceFlags, DWORD dwAccessMask, PSID pSid, BOOL bAuditSuccess, BOOL bAuditFailure );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AddAuditAccessAceEx( PACL pAcl, DWORD dwAceRevision, DWORD AceFlags, DWORD dwAccessMask, PSID pSid, BOOL bAuditSuccess, BOOL bAuditFailure )
+{
+    static FN_AddAuditAccessAceEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddAuditAccessAceEx", &g_Kernel32);
+    return pfn( pAcl, dwAceRevision, AceFlags, dwAccessMask, pSid, bAuditSuccess, bAuditFailure );
+}
+
+typedef BOOL WINAPI FN_AddAccessAllowedObjectAce( PACL pAcl, DWORD dwAceRevision, DWORD AceFlags, DWORD AccessMask, GUID * ObjectTypeGuid, GUID * InheritedObjectTypeGuid, PSID pSid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AddAccessAllowedObjectAce( PACL pAcl, DWORD dwAceRevision, DWORD AceFlags, DWORD AccessMask, GUID * ObjectTypeGuid, GUID * InheritedObjectTypeGuid, PSID pSid )
+{
+    static FN_AddAccessAllowedObjectAce *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddAccessAllowedObjectAce", &g_Kernel32);
+    return pfn( pAcl, dwAceRevision, AceFlags, AccessMask, ObjectTypeGuid, InheritedObjectTypeGuid, pSid );
+}
+
+typedef BOOL WINAPI FN_AddAccessDeniedObjectAce( PACL pAcl, DWORD dwAceRevision, DWORD AceFlags, DWORD AccessMask, GUID * ObjectTypeGuid, GUID * InheritedObjectTypeGuid, PSID pSid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AddAccessDeniedObjectAce( PACL pAcl, DWORD dwAceRevision, DWORD AceFlags, DWORD AccessMask, GUID * ObjectTypeGuid, GUID * InheritedObjectTypeGuid, PSID pSid )
+{
+    static FN_AddAccessDeniedObjectAce *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddAccessDeniedObjectAce", &g_Kernel32);
+    return pfn( pAcl, dwAceRevision, AceFlags, AccessMask, ObjectTypeGuid, InheritedObjectTypeGuid, pSid );
+}
+
+typedef BOOL WINAPI FN_AddAuditAccessObjectAce( PACL pAcl, DWORD dwAceRevision, DWORD AceFlags, DWORD AccessMask, GUID * ObjectTypeGuid, GUID * InheritedObjectTypeGuid, PSID pSid, BOOL bAuditSuccess, BOOL bAuditFailure );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AddAuditAccessObjectAce( PACL pAcl, DWORD dwAceRevision, DWORD AceFlags, DWORD AccessMask, GUID * ObjectTypeGuid, GUID * InheritedObjectTypeGuid, PSID pSid, BOOL bAuditSuccess, BOOL bAuditFailure )
+{
+    static FN_AddAuditAccessObjectAce *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddAuditAccessObjectAce", &g_Kernel32);
+    return pfn( pAcl, dwAceRevision, AceFlags, AccessMask, ObjectTypeGuid, InheritedObjectTypeGuid, pSid, bAuditSuccess, bAuditFailure );
+}
+
+typedef BOOL WINAPI FN_FindFirstFreeAce( PACL pAcl, LPVOID * pAce );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindFirstFreeAce( PACL pAcl, LPVOID * pAce )
+{
+    static FN_FindFirstFreeAce *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindFirstFreeAce", &g_Kernel32);
+    return pfn( pAcl, pAce );
+}
+
+typedef BOOL WINAPI FN_InitializeSecurityDescriptor( PSECURITY_DESCRIPTOR pSecurityDescriptor, DWORD dwRevision );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_InitializeSecurityDescriptor( PSECURITY_DESCRIPTOR pSecurityDescriptor, DWORD dwRevision )
+{
+    static FN_InitializeSecurityDescriptor *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "InitializeSecurityDescriptor", &g_Kernel32);
+    return pfn( pSecurityDescriptor, dwRevision );
+}
+
+typedef BOOL WINAPI FN_IsValidSecurityDescriptor( PSECURITY_DESCRIPTOR pSecurityDescriptor );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsValidSecurityDescriptor( PSECURITY_DESCRIPTOR pSecurityDescriptor )
+{
+    static FN_IsValidSecurityDescriptor *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsValidSecurityDescriptor", &g_Kernel32);
+    return pfn( pSecurityDescriptor );
+}
+
+typedef DWORD WINAPI FN_GetSecurityDescriptorLength( PSECURITY_DESCRIPTOR pSecurityDescriptor );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetSecurityDescriptorLength( PSECURITY_DESCRIPTOR pSecurityDescriptor )
+{
+    static FN_GetSecurityDescriptorLength *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSecurityDescriptorLength", &g_Kernel32);
+    return pfn( pSecurityDescriptor );
+}
+
+typedef BOOL WINAPI FN_GetSecurityDescriptorControl( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSECURITY_DESCRIPTOR_CONTROL pControl, LPDWORD lpdwRevision );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetSecurityDescriptorControl( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSECURITY_DESCRIPTOR_CONTROL pControl, LPDWORD lpdwRevision )
+{
+    static FN_GetSecurityDescriptorControl *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSecurityDescriptorControl", &g_Kernel32);
+    return pfn( pSecurityDescriptor, pControl, lpdwRevision );
+}
+
+typedef BOOL WINAPI FN_SetSecurityDescriptorControl( PSECURITY_DESCRIPTOR pSecurityDescriptor, SECURITY_DESCRIPTOR_CONTROL ControlBitsOfInterest, SECURITY_DESCRIPTOR_CONTROL ControlBitsToSet );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetSecurityDescriptorControl( PSECURITY_DESCRIPTOR pSecurityDescriptor, SECURITY_DESCRIPTOR_CONTROL ControlBitsOfInterest, SECURITY_DESCRIPTOR_CONTROL ControlBitsToSet )
+{
+    static FN_SetSecurityDescriptorControl *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetSecurityDescriptorControl", &g_Kernel32);
+    return pfn( pSecurityDescriptor, ControlBitsOfInterest, ControlBitsToSet );
+}
+
+typedef BOOL WINAPI FN_SetSecurityDescriptorDacl( PSECURITY_DESCRIPTOR pSecurityDescriptor, BOOL bDaclPresent, PACL pDacl, BOOL bDaclDefaulted );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetSecurityDescriptorDacl( PSECURITY_DESCRIPTOR pSecurityDescriptor, BOOL bDaclPresent, PACL pDacl, BOOL bDaclDefaulted )
+{
+    static FN_SetSecurityDescriptorDacl *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetSecurityDescriptorDacl", &g_Kernel32);
+    return pfn( pSecurityDescriptor, bDaclPresent, pDacl, bDaclDefaulted );
+}
+
+typedef BOOL WINAPI FN_GetSecurityDescriptorDacl( PSECURITY_DESCRIPTOR pSecurityDescriptor, LPBOOL lpbDaclPresent, PACL * pDacl, LPBOOL lpbDaclDefaulted );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetSecurityDescriptorDacl( PSECURITY_DESCRIPTOR pSecurityDescriptor, LPBOOL lpbDaclPresent, PACL * pDacl, LPBOOL lpbDaclDefaulted )
+{
+    static FN_GetSecurityDescriptorDacl *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSecurityDescriptorDacl", &g_Kernel32);
+    return pfn( pSecurityDescriptor, lpbDaclPresent, pDacl, lpbDaclDefaulted );
+}
+
+typedef BOOL WINAPI FN_SetSecurityDescriptorSacl( PSECURITY_DESCRIPTOR pSecurityDescriptor, BOOL bSaclPresent, PACL pSacl, BOOL bSaclDefaulted );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetSecurityDescriptorSacl( PSECURITY_DESCRIPTOR pSecurityDescriptor, BOOL bSaclPresent, PACL pSacl, BOOL bSaclDefaulted )
+{
+    static FN_SetSecurityDescriptorSacl *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetSecurityDescriptorSacl", &g_Kernel32);
+    return pfn( pSecurityDescriptor, bSaclPresent, pSacl, bSaclDefaulted );
+}
+
+typedef BOOL WINAPI FN_GetSecurityDescriptorSacl( PSECURITY_DESCRIPTOR pSecurityDescriptor, LPBOOL lpbSaclPresent, PACL * pSacl, LPBOOL lpbSaclDefaulted );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetSecurityDescriptorSacl( PSECURITY_DESCRIPTOR pSecurityDescriptor, LPBOOL lpbSaclPresent, PACL * pSacl, LPBOOL lpbSaclDefaulted )
+{
+    static FN_GetSecurityDescriptorSacl *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSecurityDescriptorSacl", &g_Kernel32);
+    return pfn( pSecurityDescriptor, lpbSaclPresent, pSacl, lpbSaclDefaulted );
+}
+
+typedef BOOL WINAPI FN_SetSecurityDescriptorOwner( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID pOwner, BOOL bOwnerDefaulted );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetSecurityDescriptorOwner( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID pOwner, BOOL bOwnerDefaulted )
+{
+    static FN_SetSecurityDescriptorOwner *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetSecurityDescriptorOwner", &g_Kernel32);
+    return pfn( pSecurityDescriptor, pOwner, bOwnerDefaulted );
+}
+
+typedef BOOL WINAPI FN_GetSecurityDescriptorOwner( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID * pOwner, LPBOOL lpbOwnerDefaulted );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetSecurityDescriptorOwner( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID * pOwner, LPBOOL lpbOwnerDefaulted )
+{
+    static FN_GetSecurityDescriptorOwner *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSecurityDescriptorOwner", &g_Kernel32);
+    return pfn( pSecurityDescriptor, pOwner, lpbOwnerDefaulted );
+}
+
+typedef BOOL WINAPI FN_SetSecurityDescriptorGroup( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID pGroup, BOOL bGroupDefaulted );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetSecurityDescriptorGroup( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID pGroup, BOOL bGroupDefaulted )
+{
+    static FN_SetSecurityDescriptorGroup *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetSecurityDescriptorGroup", &g_Kernel32);
+    return pfn( pSecurityDescriptor, pGroup, bGroupDefaulted );
+}
+
+typedef BOOL WINAPI FN_GetSecurityDescriptorGroup( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID * pGroup, LPBOOL lpbGroupDefaulted );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetSecurityDescriptorGroup( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID * pGroup, LPBOOL lpbGroupDefaulted )
+{
+    static FN_GetSecurityDescriptorGroup *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSecurityDescriptorGroup", &g_Kernel32);
+    return pfn( pSecurityDescriptor, pGroup, lpbGroupDefaulted );
+}
+
+typedef DWORD WINAPI FN_SetSecurityDescriptorRMControl( PSECURITY_DESCRIPTOR SecurityDescriptor, PUCHAR RMControl );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_SetSecurityDescriptorRMControl( PSECURITY_DESCRIPTOR SecurityDescriptor, PUCHAR RMControl )
+{
+    static FN_SetSecurityDescriptorRMControl *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetSecurityDescriptorRMControl", &g_Kernel32);
+    return pfn( SecurityDescriptor, RMControl );
+}
+
+typedef DWORD WINAPI FN_GetSecurityDescriptorRMControl( PSECURITY_DESCRIPTOR SecurityDescriptor, PUCHAR RMControl );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetSecurityDescriptorRMControl( PSECURITY_DESCRIPTOR SecurityDescriptor, PUCHAR RMControl )
+{
+    static FN_GetSecurityDescriptorRMControl *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSecurityDescriptorRMControl", &g_Kernel32);
+    return pfn( SecurityDescriptor, RMControl );
+}
+
+typedef BOOL WINAPI FN_CreatePrivateObjectSecurity( PSECURITY_DESCRIPTOR ParentDescriptor, PSECURITY_DESCRIPTOR CreatorDescriptor, PSECURITY_DESCRIPTOR * NewDescriptor, BOOL IsDirectoryObject, HANDLE Token, PGENERIC_MAPPING GenericMapping );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreatePrivateObjectSecurity( PSECURITY_DESCRIPTOR ParentDescriptor, PSECURITY_DESCRIPTOR CreatorDescriptor, PSECURITY_DESCRIPTOR * NewDescriptor, BOOL IsDirectoryObject, HANDLE Token, PGENERIC_MAPPING GenericMapping )
+{
+    static FN_CreatePrivateObjectSecurity *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreatePrivateObjectSecurity", &g_Kernel32);
+    return pfn( ParentDescriptor, CreatorDescriptor, NewDescriptor, IsDirectoryObject, Token, GenericMapping );
+}
+
+typedef BOOL WINAPI FN_ConvertToAutoInheritPrivateObjectSecurity( PSECURITY_DESCRIPTOR ParentDescriptor, PSECURITY_DESCRIPTOR CurrentSecurityDescriptor, PSECURITY_DESCRIPTOR * NewSecurityDescriptor, GUID * ObjectType, BOOLEAN IsDirectoryObject, PGENERIC_MAPPING GenericMapping );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ConvertToAutoInheritPrivateObjectSecurity( PSECURITY_DESCRIPTOR ParentDescriptor, PSECURITY_DESCRIPTOR CurrentSecurityDescriptor, PSECURITY_DESCRIPTOR * NewSecurityDescriptor, GUID * ObjectType, BOOLEAN IsDirectoryObject, PGENERIC_MAPPING GenericMapping )
+{
+    static FN_ConvertToAutoInheritPrivateObjectSecurity *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ConvertToAutoInheritPrivateObjectSecurity", &g_Kernel32);
+    return pfn( ParentDescriptor, CurrentSecurityDescriptor, NewSecurityDescriptor, ObjectType, IsDirectoryObject, GenericMapping );
+}
+
+typedef BOOL WINAPI FN_CreatePrivateObjectSecurityEx( PSECURITY_DESCRIPTOR ParentDescriptor, PSECURITY_DESCRIPTOR CreatorDescriptor, PSECURITY_DESCRIPTOR * NewDescriptor, GUID * ObjectType, BOOL IsContainerObject, ULONG AutoInheritFlags, HANDLE Token, PGENERIC_MAPPING GenericMapping );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreatePrivateObjectSecurityEx( PSECURITY_DESCRIPTOR ParentDescriptor, PSECURITY_DESCRIPTOR CreatorDescriptor, PSECURITY_DESCRIPTOR * NewDescriptor, GUID * ObjectType, BOOL IsContainerObject, ULONG AutoInheritFlags, HANDLE Token, PGENERIC_MAPPING GenericMapping )
+{
+    static FN_CreatePrivateObjectSecurityEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreatePrivateObjectSecurityEx", &g_Kernel32);
+    return pfn( ParentDescriptor, CreatorDescriptor, NewDescriptor, ObjectType, IsContainerObject, AutoInheritFlags, Token, GenericMapping );
+}
+
+typedef BOOL WINAPI FN_CreatePrivateObjectSecurityWithMultipleInheritance( PSECURITY_DESCRIPTOR ParentDescriptor, PSECURITY_DESCRIPTOR CreatorDescriptor, PSECURITY_DESCRIPTOR * NewDescriptor, GUID * *ObjectTypes, ULONG GuidCount, BOOL IsContainerObject, ULONG AutoInheritFlags, HANDLE Token, PGENERIC_MAPPING GenericMapping );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreatePrivateObjectSecurityWithMultipleInheritance( PSECURITY_DESCRIPTOR ParentDescriptor, PSECURITY_DESCRIPTOR CreatorDescriptor, PSECURITY_DESCRIPTOR * NewDescriptor, GUID * *ObjectTypes, ULONG GuidCount, BOOL IsContainerObject, ULONG AutoInheritFlags, HANDLE Token, PGENERIC_MAPPING GenericMapping )
+{
+    static FN_CreatePrivateObjectSecurityWithMultipleInheritance *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreatePrivateObjectSecurityWithMultipleInheritance", &g_Kernel32);
+    return pfn( ParentDescriptor, CreatorDescriptor, NewDescriptor, ObjectTypes, GuidCount, IsContainerObject, AutoInheritFlags, Token, GenericMapping );
+}
+
+typedef BOOL WINAPI FN_SetPrivateObjectSecurity( SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR ModificationDescriptor, PSECURITY_DESCRIPTOR * ObjectsSecurityDescriptor, PGENERIC_MAPPING GenericMapping, HANDLE Token );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetPrivateObjectSecurity( SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR ModificationDescriptor, PSECURITY_DESCRIPTOR * ObjectsSecurityDescriptor, PGENERIC_MAPPING GenericMapping, HANDLE Token )
+{
+    static FN_SetPrivateObjectSecurity *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetPrivateObjectSecurity", &g_Kernel32);
+    return pfn( SecurityInformation, ModificationDescriptor, ObjectsSecurityDescriptor, GenericMapping, Token );
+}
+
+typedef BOOL WINAPI FN_SetPrivateObjectSecurityEx( SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR ModificationDescriptor, PSECURITY_DESCRIPTOR * ObjectsSecurityDescriptor, ULONG AutoInheritFlags, PGENERIC_MAPPING GenericMapping, HANDLE Token );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetPrivateObjectSecurityEx( SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR ModificationDescriptor, PSECURITY_DESCRIPTOR * ObjectsSecurityDescriptor, ULONG AutoInheritFlags, PGENERIC_MAPPING GenericMapping, HANDLE Token )
+{
+    static FN_SetPrivateObjectSecurityEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetPrivateObjectSecurityEx", &g_Kernel32);
+    return pfn( SecurityInformation, ModificationDescriptor, ObjectsSecurityDescriptor, AutoInheritFlags, GenericMapping, Token );
+}
+
+typedef BOOL WINAPI FN_GetPrivateObjectSecurity( PSECURITY_DESCRIPTOR ObjectDescriptor, SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR ResultantDescriptor, DWORD DescriptorLength, PDWORD ReturnLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetPrivateObjectSecurity( PSECURITY_DESCRIPTOR ObjectDescriptor, SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR ResultantDescriptor, DWORD DescriptorLength, PDWORD ReturnLength )
+{
+    static FN_GetPrivateObjectSecurity *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetPrivateObjectSecurity", &g_Kernel32);
+    return pfn( ObjectDescriptor, SecurityInformation, ResultantDescriptor, DescriptorLength, ReturnLength );
+}
+
+typedef BOOL WINAPI FN_DestroyPrivateObjectSecurity( PSECURITY_DESCRIPTOR * ObjectDescriptor );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DestroyPrivateObjectSecurity( PSECURITY_DESCRIPTOR * ObjectDescriptor )
+{
+    static FN_DestroyPrivateObjectSecurity *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DestroyPrivateObjectSecurity", &g_Kernel32);
+    return pfn( ObjectDescriptor );
+}
+
+typedef BOOL WINAPI FN_MakeSelfRelativeSD( PSECURITY_DESCRIPTOR pAbsoluteSecurityDescriptor, PSECURITY_DESCRIPTOR pSelfRelativeSecurityDescriptor, LPDWORD lpdwBufferLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_MakeSelfRelativeSD( PSECURITY_DESCRIPTOR pAbsoluteSecurityDescriptor, PSECURITY_DESCRIPTOR pSelfRelativeSecurityDescriptor, LPDWORD lpdwBufferLength )
+{
+    static FN_MakeSelfRelativeSD *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MakeSelfRelativeSD", &g_Kernel32);
+    return pfn( pAbsoluteSecurityDescriptor, pSelfRelativeSecurityDescriptor, lpdwBufferLength );
+}
+
+typedef BOOL WINAPI FN_MakeAbsoluteSD( PSECURITY_DESCRIPTOR pSelfRelativeSecurityDescriptor, PSECURITY_DESCRIPTOR pAbsoluteSecurityDescriptor, LPDWORD lpdwAbsoluteSecurityDescriptorSize, PACL pDacl, LPDWORD lpdwDaclSize, PACL pSacl, LPDWORD lpdwSaclSize, PSID pOwner, LPDWORD lpdwOwnerSize, PSID pPrimaryGroup, LPDWORD lpdwPrimaryGroupSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_MakeAbsoluteSD( PSECURITY_DESCRIPTOR pSelfRelativeSecurityDescriptor, PSECURITY_DESCRIPTOR pAbsoluteSecurityDescriptor, LPDWORD lpdwAbsoluteSecurityDescriptorSize, PACL pDacl, LPDWORD lpdwDaclSize, PACL pSacl, LPDWORD lpdwSaclSize, PSID pOwner, LPDWORD lpdwOwnerSize, PSID pPrimaryGroup, LPDWORD lpdwPrimaryGroupSize )
+{
+    static FN_MakeAbsoluteSD *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MakeAbsoluteSD", &g_Kernel32);
+    return pfn( pSelfRelativeSecurityDescriptor, pAbsoluteSecurityDescriptor, lpdwAbsoluteSecurityDescriptorSize, pDacl, lpdwDaclSize, pSacl, lpdwSaclSize, pOwner, lpdwOwnerSize, pPrimaryGroup, lpdwPrimaryGroupSize );
+}
+
+typedef BOOL WINAPI FN_MakeAbsoluteSD2( PSECURITY_DESCRIPTOR pSelfRelativeSecurityDescriptor, LPDWORD lpdwBufferSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_MakeAbsoluteSD2( PSECURITY_DESCRIPTOR pSelfRelativeSecurityDescriptor, LPDWORD lpdwBufferSize )
+{
+    static FN_MakeAbsoluteSD2 *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MakeAbsoluteSD2", &g_Kernel32);
+    return pfn( pSelfRelativeSecurityDescriptor, lpdwBufferSize );
+}
+
+typedef BOOL WINAPI FN_SetFileSecurityA( LPCSTR lpFileName, SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetFileSecurityA( LPCSTR lpFileName, SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor )
+{
+    static FN_SetFileSecurityA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFileSecurityA", &g_Kernel32);
+    return pfn( lpFileName, SecurityInformation, pSecurityDescriptor );
+}
+
+typedef BOOL WINAPI FN_SetFileSecurityW( LPCWSTR lpFileName, SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetFileSecurityW( LPCWSTR lpFileName, SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor )
+{
+    static FN_SetFileSecurityW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetFileSecurityW", &g_Kernel32);
+    return pfn( lpFileName, SecurityInformation, pSecurityDescriptor );
+}
+
+typedef BOOL WINAPI FN_GetFileSecurityA( LPCSTR lpFileName, SECURITY_INFORMATION RequestedInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor, DWORD nLength, LPDWORD lpnLengthNeeded );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetFileSecurityA( LPCSTR lpFileName, SECURITY_INFORMATION RequestedInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor, DWORD nLength, LPDWORD lpnLengthNeeded )
+{
+    static FN_GetFileSecurityA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileSecurityA", &g_Kernel32);
+    return pfn( lpFileName, RequestedInformation, pSecurityDescriptor, nLength, lpnLengthNeeded );
+}
+
+typedef BOOL WINAPI FN_GetFileSecurityW( LPCWSTR lpFileName, SECURITY_INFORMATION RequestedInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor, DWORD nLength, LPDWORD lpnLengthNeeded );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetFileSecurityW( LPCWSTR lpFileName, SECURITY_INFORMATION RequestedInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor, DWORD nLength, LPDWORD lpnLengthNeeded )
+{
+    static FN_GetFileSecurityW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileSecurityW", &g_Kernel32);
+    return pfn( lpFileName, RequestedInformation, pSecurityDescriptor, nLength, lpnLengthNeeded );
+}
+
+typedef BOOL WINAPI FN_SetKernelObjectSecurity( HANDLE Handle, SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR SecurityDescriptor );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetKernelObjectSecurity( HANDLE Handle, SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR SecurityDescriptor )
+{
+    static FN_SetKernelObjectSecurity *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetKernelObjectSecurity", &g_Kernel32);
+    return pfn( Handle, SecurityInformation, SecurityDescriptor );
+}
+
+typedef HANDLE WINAPI FN_FindFirstChangeNotificationA( LPCSTR lpPathName, BOOL bWatchSubtree, DWORD dwNotifyFilter );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_FindFirstChangeNotificationA( LPCSTR lpPathName, BOOL bWatchSubtree, DWORD dwNotifyFilter )
+{
+    static FN_FindFirstChangeNotificationA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindFirstChangeNotificationA", &g_Kernel32);
+    return pfn( lpPathName, bWatchSubtree, dwNotifyFilter );
+}
+
+typedef HANDLE WINAPI FN_FindFirstChangeNotificationW( LPCWSTR lpPathName, BOOL bWatchSubtree, DWORD dwNotifyFilter );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_FindFirstChangeNotificationW( LPCWSTR lpPathName, BOOL bWatchSubtree, DWORD dwNotifyFilter )
+{
+    static FN_FindFirstChangeNotificationW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindFirstChangeNotificationW", &g_Kernel32);
+    return pfn( lpPathName, bWatchSubtree, dwNotifyFilter );
+}
+
+typedef BOOL WINAPI FN_FindNextChangeNotification( HANDLE hChangeHandle );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindNextChangeNotification( HANDLE hChangeHandle )
+{
+    static FN_FindNextChangeNotification *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindNextChangeNotification", &g_Kernel32);
+    return pfn( hChangeHandle );
+}
+
+typedef BOOL WINAPI FN_FindCloseChangeNotification( HANDLE hChangeHandle );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindCloseChangeNotification( HANDLE hChangeHandle )
+{
+    static FN_FindCloseChangeNotification *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindCloseChangeNotification", &g_Kernel32);
+    return pfn( hChangeHandle );
+}
+
+typedef BOOL WINAPI FN_ReadDirectoryChangesW( HANDLE hDirectory, LPVOID lpBuffer, DWORD nBufferLength, BOOL bWatchSubtree, DWORD dwNotifyFilter, LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped, LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadDirectoryChangesW( HANDLE hDirectory, LPVOID lpBuffer, DWORD nBufferLength, BOOL bWatchSubtree, DWORD dwNotifyFilter, LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped, LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine )
+{
+    static FN_ReadDirectoryChangesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadDirectoryChangesW", &g_Kernel32);
+    return pfn( hDirectory, lpBuffer, nBufferLength, bWatchSubtree, dwNotifyFilter, lpBytesReturned, lpOverlapped, lpCompletionRoutine );
+}
+
+typedef BOOL WINAPI FN_VirtualLock( LPVOID lpAddress, SIZE_T dwSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_VirtualLock( LPVOID lpAddress, SIZE_T dwSize )
+{
+    static FN_VirtualLock *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VirtualLock", &g_Kernel32);
+    return pfn( lpAddress, dwSize );
+}
+
+typedef BOOL WINAPI FN_VirtualUnlock( LPVOID lpAddress, SIZE_T dwSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_VirtualUnlock( LPVOID lpAddress, SIZE_T dwSize )
+{
+    static FN_VirtualUnlock *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VirtualUnlock", &g_Kernel32);
+    return pfn( lpAddress, dwSize );
+}
+
+typedef LPVOID WINAPI FN_MapViewOfFileEx( HANDLE hFileMappingObject, DWORD dwDesiredAccess, DWORD dwFileOffsetHigh, DWORD dwFileOffsetLow, SIZE_T dwNumberOfBytesToMap, LPVOID lpBaseAddress );
+__declspec(dllexport) LPVOID WINAPI kPrf2Wrap_MapViewOfFileEx( HANDLE hFileMappingObject, DWORD dwDesiredAccess, DWORD dwFileOffsetHigh, DWORD dwFileOffsetLow, SIZE_T dwNumberOfBytesToMap, LPVOID lpBaseAddress )
+{
+    static FN_MapViewOfFileEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MapViewOfFileEx", &g_Kernel32);
+    return pfn( hFileMappingObject, dwDesiredAccess, dwFileOffsetHigh, dwFileOffsetLow, dwNumberOfBytesToMap, lpBaseAddress );
+}
+
+typedef BOOL WINAPI FN_SetPriorityClass( HANDLE hProcess, DWORD dwPriorityClass );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetPriorityClass( HANDLE hProcess, DWORD dwPriorityClass )
+{
+    static FN_SetPriorityClass *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetPriorityClass", &g_Kernel32);
+    return pfn( hProcess, dwPriorityClass );
+}
+
+typedef DWORD WINAPI FN_GetPriorityClass( HANDLE hProcess );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetPriorityClass( HANDLE hProcess )
+{
+    static FN_GetPriorityClass *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetPriorityClass", &g_Kernel32);
+    return pfn( hProcess );
+}
+
+typedef BOOL WINAPI FN_IsBadReadPtr( CONST VOID * lp, UINT_PTR ucb );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsBadReadPtr( CONST VOID * lp, UINT_PTR ucb )
+{
+    static FN_IsBadReadPtr *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsBadReadPtr", &g_Kernel32);
+    return pfn( lp, ucb );
+}
+
+typedef BOOL WINAPI FN_IsBadWritePtr( LPVOID lp, UINT_PTR ucb );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsBadWritePtr( LPVOID lp, UINT_PTR ucb )
+{
+    static FN_IsBadWritePtr *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsBadWritePtr", &g_Kernel32);
+    return pfn( lp, ucb );
+}
+
+typedef BOOL WINAPI FN_IsBadHugeReadPtr( CONST VOID * lp, UINT_PTR ucb );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsBadHugeReadPtr( CONST VOID * lp, UINT_PTR ucb )
+{
+    static FN_IsBadHugeReadPtr *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsBadHugeReadPtr", &g_Kernel32);
+    return pfn( lp, ucb );
+}
+
+typedef BOOL WINAPI FN_IsBadHugeWritePtr( LPVOID lp, UINT_PTR ucb );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsBadHugeWritePtr( LPVOID lp, UINT_PTR ucb )
+{
+    static FN_IsBadHugeWritePtr *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsBadHugeWritePtr", &g_Kernel32);
+    return pfn( lp, ucb );
+}
+
+typedef BOOL WINAPI FN_IsBadCodePtr( FARPROC lpfn );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsBadCodePtr( FARPROC lpfn )
+{
+    static FN_IsBadCodePtr *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsBadCodePtr", &g_Kernel32);
+    return pfn( lpfn );
+}
+
+typedef BOOL WINAPI FN_IsBadStringPtrA( LPCSTR lpsz, UINT_PTR ucchMax );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsBadStringPtrA( LPCSTR lpsz, UINT_PTR ucchMax )
+{
+    static FN_IsBadStringPtrA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsBadStringPtrA", &g_Kernel32);
+    return pfn( lpsz, ucchMax );
+}
+
+typedef BOOL WINAPI FN_IsBadStringPtrW( LPCWSTR lpsz, UINT_PTR ucchMax );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsBadStringPtrW( LPCWSTR lpsz, UINT_PTR ucchMax )
+{
+    static FN_IsBadStringPtrW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsBadStringPtrW", &g_Kernel32);
+    return pfn( lpsz, ucchMax );
+}
+
+typedef BOOL WINAPI FN_LookupAccountSidA( LPCSTR lpSystemName, PSID Sid, LPSTR Name, LPDWORD cchName, LPSTR ReferencedDomainName, LPDWORD cchReferencedDomainName, PSID_NAME_USE peUse );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LookupAccountSidA( LPCSTR lpSystemName, PSID Sid, LPSTR Name, LPDWORD cchName, LPSTR ReferencedDomainName, LPDWORD cchReferencedDomainName, PSID_NAME_USE peUse )
+{
+    static FN_LookupAccountSidA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LookupAccountSidA", &g_Kernel32);
+    return pfn( lpSystemName, Sid, Name, cchName, ReferencedDomainName, cchReferencedDomainName, peUse );
+}
+
+typedef BOOL WINAPI FN_LookupAccountSidW( LPCWSTR lpSystemName, PSID Sid, LPWSTR Name, LPDWORD cchName, LPWSTR ReferencedDomainName, LPDWORD cchReferencedDomainName, PSID_NAME_USE peUse );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LookupAccountSidW( LPCWSTR lpSystemName, PSID Sid, LPWSTR Name, LPDWORD cchName, LPWSTR ReferencedDomainName, LPDWORD cchReferencedDomainName, PSID_NAME_USE peUse )
+{
+    static FN_LookupAccountSidW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LookupAccountSidW", &g_Kernel32);
+    return pfn( lpSystemName, Sid, Name, cchName, ReferencedDomainName, cchReferencedDomainName, peUse );
+}
+
+typedef BOOL WINAPI FN_LookupAccountNameA( LPCSTR lpSystemName, LPCSTR lpAccountName, PSID Sid, LPDWORD cbSid, LPSTR ReferencedDomainName, LPDWORD cchReferencedDomainName, PSID_NAME_USE peUse );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LookupAccountNameA( LPCSTR lpSystemName, LPCSTR lpAccountName, PSID Sid, LPDWORD cbSid, LPSTR ReferencedDomainName, LPDWORD cchReferencedDomainName, PSID_NAME_USE peUse )
+{
+    static FN_LookupAccountNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LookupAccountNameA", &g_Kernel32);
+    return pfn( lpSystemName, lpAccountName, Sid, cbSid, ReferencedDomainName, cchReferencedDomainName, peUse );
+}
+
+typedef BOOL WINAPI FN_LookupAccountNameW( LPCWSTR lpSystemName, LPCWSTR lpAccountName, PSID Sid, LPDWORD cbSid, LPWSTR ReferencedDomainName, LPDWORD cchReferencedDomainName, PSID_NAME_USE peUse );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LookupAccountNameW( LPCWSTR lpSystemName, LPCWSTR lpAccountName, PSID Sid, LPDWORD cbSid, LPWSTR ReferencedDomainName, LPDWORD cchReferencedDomainName, PSID_NAME_USE peUse )
+{
+    static FN_LookupAccountNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LookupAccountNameW", &g_Kernel32);
+    return pfn( lpSystemName, lpAccountName, Sid, cbSid, ReferencedDomainName, cchReferencedDomainName, peUse );
+}
+
+typedef BOOL WINAPI FN_LookupPrivilegeValueA( LPCSTR lpSystemName, LPCSTR lpName, PLUID lpLuid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LookupPrivilegeValueA( LPCSTR lpSystemName, LPCSTR lpName, PLUID lpLuid )
+{
+    static FN_LookupPrivilegeValueA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LookupPrivilegeValueA", &g_Kernel32);
+    return pfn( lpSystemName, lpName, lpLuid );
+}
+
+typedef BOOL WINAPI FN_LookupPrivilegeValueW( LPCWSTR lpSystemName, LPCWSTR lpName, PLUID lpLuid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LookupPrivilegeValueW( LPCWSTR lpSystemName, LPCWSTR lpName, PLUID lpLuid )
+{
+    static FN_LookupPrivilegeValueW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LookupPrivilegeValueW", &g_Kernel32);
+    return pfn( lpSystemName, lpName, lpLuid );
+}
+
+typedef BOOL WINAPI FN_LookupPrivilegeNameA( LPCSTR lpSystemName, PLUID lpLuid, LPSTR lpName, LPDWORD cchName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LookupPrivilegeNameA( LPCSTR lpSystemName, PLUID lpLuid, LPSTR lpName, LPDWORD cchName )
+{
+    static FN_LookupPrivilegeNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LookupPrivilegeNameA", &g_Kernel32);
+    return pfn( lpSystemName, lpLuid, lpName, cchName );
+}
+
+typedef BOOL WINAPI FN_LookupPrivilegeNameW( LPCWSTR lpSystemName, PLUID lpLuid, LPWSTR lpName, LPDWORD cchName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LookupPrivilegeNameW( LPCWSTR lpSystemName, PLUID lpLuid, LPWSTR lpName, LPDWORD cchName )
+{
+    static FN_LookupPrivilegeNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LookupPrivilegeNameW", &g_Kernel32);
+    return pfn( lpSystemName, lpLuid, lpName, cchName );
+}
+
+typedef BOOL WINAPI FN_LookupPrivilegeDisplayNameA( LPCSTR lpSystemName, LPCSTR lpName, LPSTR lpDisplayName, LPDWORD cchDisplayName, LPDWORD lpLanguageId );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LookupPrivilegeDisplayNameA( LPCSTR lpSystemName, LPCSTR lpName, LPSTR lpDisplayName, LPDWORD cchDisplayName, LPDWORD lpLanguageId )
+{
+    static FN_LookupPrivilegeDisplayNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LookupPrivilegeDisplayNameA", &g_Kernel32);
+    return pfn( lpSystemName, lpName, lpDisplayName, cchDisplayName, lpLanguageId );
+}
+
+typedef BOOL WINAPI FN_LookupPrivilegeDisplayNameW( LPCWSTR lpSystemName, LPCWSTR lpName, LPWSTR lpDisplayName, LPDWORD cchDisplayName, LPDWORD lpLanguageId );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LookupPrivilegeDisplayNameW( LPCWSTR lpSystemName, LPCWSTR lpName, LPWSTR lpDisplayName, LPDWORD cchDisplayName, LPDWORD lpLanguageId )
+{
+    static FN_LookupPrivilegeDisplayNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LookupPrivilegeDisplayNameW", &g_Kernel32);
+    return pfn( lpSystemName, lpName, lpDisplayName, cchDisplayName, lpLanguageId );
+}
+
+typedef BOOL WINAPI FN_AllocateLocallyUniqueId( PLUID Luid );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AllocateLocallyUniqueId( PLUID Luid )
+{
+    static FN_AllocateLocallyUniqueId *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AllocateLocallyUniqueId", &g_Kernel32);
+    return pfn( Luid );
+}
+
+typedef BOOL WINAPI FN_BuildCommDCBA( LPCSTR lpDef, LPDCB lpDCB );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_BuildCommDCBA( LPCSTR lpDef, LPDCB lpDCB )
+{
+    static FN_BuildCommDCBA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "BuildCommDCBA", &g_Kernel32);
+    return pfn( lpDef, lpDCB );
+}
+
+typedef BOOL WINAPI FN_BuildCommDCBW( LPCWSTR lpDef, LPDCB lpDCB );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_BuildCommDCBW( LPCWSTR lpDef, LPDCB lpDCB )
+{
+    static FN_BuildCommDCBW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "BuildCommDCBW", &g_Kernel32);
+    return pfn( lpDef, lpDCB );
+}
+
+typedef BOOL WINAPI FN_BuildCommDCBAndTimeoutsA( LPCSTR lpDef, LPDCB lpDCB, LPCOMMTIMEOUTS lpCommTimeouts );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_BuildCommDCBAndTimeoutsA( LPCSTR lpDef, LPDCB lpDCB, LPCOMMTIMEOUTS lpCommTimeouts )
+{
+    static FN_BuildCommDCBAndTimeoutsA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "BuildCommDCBAndTimeoutsA", &g_Kernel32);
+    return pfn( lpDef, lpDCB, lpCommTimeouts );
+}
+
+typedef BOOL WINAPI FN_BuildCommDCBAndTimeoutsW( LPCWSTR lpDef, LPDCB lpDCB, LPCOMMTIMEOUTS lpCommTimeouts );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_BuildCommDCBAndTimeoutsW( LPCWSTR lpDef, LPDCB lpDCB, LPCOMMTIMEOUTS lpCommTimeouts )
+{
+    static FN_BuildCommDCBAndTimeoutsW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "BuildCommDCBAndTimeoutsW", &g_Kernel32);
+    return pfn( lpDef, lpDCB, lpCommTimeouts );
+}
+
+typedef BOOL WINAPI FN_CommConfigDialogA( LPCSTR lpszName, HWND hWnd, LPCOMMCONFIG lpCC );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CommConfigDialogA( LPCSTR lpszName, HWND hWnd, LPCOMMCONFIG lpCC )
+{
+    static FN_CommConfigDialogA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CommConfigDialogA", &g_Kernel32);
+    return pfn( lpszName, hWnd, lpCC );
+}
+
+typedef BOOL WINAPI FN_CommConfigDialogW( LPCWSTR lpszName, HWND hWnd, LPCOMMCONFIG lpCC );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CommConfigDialogW( LPCWSTR lpszName, HWND hWnd, LPCOMMCONFIG lpCC )
+{
+    static FN_CommConfigDialogW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CommConfigDialogW", &g_Kernel32);
+    return pfn( lpszName, hWnd, lpCC );
+}
+
+typedef BOOL WINAPI FN_GetDefaultCommConfigA( LPCSTR lpszName, LPCOMMCONFIG lpCC, LPDWORD lpdwSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetDefaultCommConfigA( LPCSTR lpszName, LPCOMMCONFIG lpCC, LPDWORD lpdwSize )
+{
+    static FN_GetDefaultCommConfigA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDefaultCommConfigA", &g_Kernel32);
+    return pfn( lpszName, lpCC, lpdwSize );
+}
+
+typedef BOOL WINAPI FN_GetDefaultCommConfigW( LPCWSTR lpszName, LPCOMMCONFIG lpCC, LPDWORD lpdwSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetDefaultCommConfigW( LPCWSTR lpszName, LPCOMMCONFIG lpCC, LPDWORD lpdwSize )
+{
+    static FN_GetDefaultCommConfigW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDefaultCommConfigW", &g_Kernel32);
+    return pfn( lpszName, lpCC, lpdwSize );
+}
+
+typedef BOOL WINAPI FN_SetDefaultCommConfigA( LPCSTR lpszName, LPCOMMCONFIG lpCC, DWORD dwSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetDefaultCommConfigA( LPCSTR lpszName, LPCOMMCONFIG lpCC, DWORD dwSize )
+{
+    static FN_SetDefaultCommConfigA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetDefaultCommConfigA", &g_Kernel32);
+    return pfn( lpszName, lpCC, dwSize );
+}
+
+typedef BOOL WINAPI FN_SetDefaultCommConfigW( LPCWSTR lpszName, LPCOMMCONFIG lpCC, DWORD dwSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetDefaultCommConfigW( LPCWSTR lpszName, LPCOMMCONFIG lpCC, DWORD dwSize )
+{
+    static FN_SetDefaultCommConfigW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetDefaultCommConfigW", &g_Kernel32);
+    return pfn( lpszName, lpCC, dwSize );
+}
+
+typedef BOOL WINAPI FN_GetComputerNameA( LPSTR lpBuffer, LPDWORD nSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetComputerNameA( LPSTR lpBuffer, LPDWORD nSize )
+{
+    static FN_GetComputerNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetComputerNameA", &g_Kernel32);
+    return pfn( lpBuffer, nSize );
+}
+
+typedef BOOL WINAPI FN_GetComputerNameW( LPWSTR lpBuffer, LPDWORD nSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetComputerNameW( LPWSTR lpBuffer, LPDWORD nSize )
+{
+    static FN_GetComputerNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetComputerNameW", &g_Kernel32);
+    return pfn( lpBuffer, nSize );
+}
+
+typedef BOOL WINAPI FN_SetComputerNameA( LPCSTR lpComputerName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetComputerNameA( LPCSTR lpComputerName )
+{
+    static FN_SetComputerNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetComputerNameA", &g_Kernel32);
+    return pfn( lpComputerName );
+}
+
+typedef BOOL WINAPI FN_SetComputerNameW( LPCWSTR lpComputerName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetComputerNameW( LPCWSTR lpComputerName )
+{
+    static FN_SetComputerNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetComputerNameW", &g_Kernel32);
+    return pfn( lpComputerName );
+}
+
+typedef BOOL WINAPI FN_GetComputerNameExA( COMPUTER_NAME_FORMAT NameType, LPSTR lpBuffer, LPDWORD nSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetComputerNameExA( COMPUTER_NAME_FORMAT NameType, LPSTR lpBuffer, LPDWORD nSize )
+{
+    static FN_GetComputerNameExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetComputerNameExA", &g_Kernel32);
+    return pfn( NameType, lpBuffer, nSize );
+}
+
+typedef BOOL WINAPI FN_GetComputerNameExW( COMPUTER_NAME_FORMAT NameType, LPWSTR lpBuffer, LPDWORD nSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetComputerNameExW( COMPUTER_NAME_FORMAT NameType, LPWSTR lpBuffer, LPDWORD nSize )
+{
+    static FN_GetComputerNameExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetComputerNameExW", &g_Kernel32);
+    return pfn( NameType, lpBuffer, nSize );
+}
+
+typedef BOOL WINAPI FN_SetComputerNameExA( COMPUTER_NAME_FORMAT NameType, LPCSTR lpBuffer );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetComputerNameExA( COMPUTER_NAME_FORMAT NameType, LPCSTR lpBuffer )
+{
+    static FN_SetComputerNameExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetComputerNameExA", &g_Kernel32);
+    return pfn( NameType, lpBuffer );
+}
+
+typedef BOOL WINAPI FN_SetComputerNameExW( COMPUTER_NAME_FORMAT NameType, LPCWSTR lpBuffer );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetComputerNameExW( COMPUTER_NAME_FORMAT NameType, LPCWSTR lpBuffer )
+{
+    static FN_SetComputerNameExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetComputerNameExW", &g_Kernel32);
+    return pfn( NameType, lpBuffer );
+}
+
+typedef BOOL WINAPI FN_DnsHostnameToComputerNameA( LPCSTR Hostname, LPSTR ComputerName, LPDWORD nSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DnsHostnameToComputerNameA( LPCSTR Hostname, LPSTR ComputerName, LPDWORD nSize )
+{
+    static FN_DnsHostnameToComputerNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DnsHostnameToComputerNameA", &g_Kernel32);
+    return pfn( Hostname, ComputerName, nSize );
+}
+
+typedef BOOL WINAPI FN_DnsHostnameToComputerNameW( LPCWSTR Hostname, LPWSTR ComputerName, LPDWORD nSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DnsHostnameToComputerNameW( LPCWSTR Hostname, LPWSTR ComputerName, LPDWORD nSize )
+{
+    static FN_DnsHostnameToComputerNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DnsHostnameToComputerNameW", &g_Kernel32);
+    return pfn( Hostname, ComputerName, nSize );
+}
+
+typedef BOOL WINAPI FN_GetUserNameA( LPSTR lpBuffer, LPDWORD pcbBuffer );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetUserNameA( LPSTR lpBuffer, LPDWORD pcbBuffer )
+{
+    static FN_GetUserNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetUserNameA", &g_Kernel32);
+    return pfn( lpBuffer, pcbBuffer );
+}
+
+typedef BOOL WINAPI FN_GetUserNameW( LPWSTR lpBuffer, LPDWORD pcbBuffer );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetUserNameW( LPWSTR lpBuffer, LPDWORD pcbBuffer )
+{
+    static FN_GetUserNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetUserNameW", &g_Kernel32);
+    return pfn( lpBuffer, pcbBuffer );
+}
+
+typedef BOOL WINAPI FN_LogonUserA( LPCSTR lpszUsername, LPCSTR lpszDomain, LPCSTR lpszPassword, DWORD dwLogonType, DWORD dwLogonProvider, PHANDLE phToken );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LogonUserA( LPCSTR lpszUsername, LPCSTR lpszDomain, LPCSTR lpszPassword, DWORD dwLogonType, DWORD dwLogonProvider, PHANDLE phToken )
+{
+    static FN_LogonUserA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LogonUserA", &g_Kernel32);
+    return pfn( lpszUsername, lpszDomain, lpszPassword, dwLogonType, dwLogonProvider, phToken );
+}
+
+typedef BOOL WINAPI FN_LogonUserW( LPCWSTR lpszUsername, LPCWSTR lpszDomain, LPCWSTR lpszPassword, DWORD dwLogonType, DWORD dwLogonProvider, PHANDLE phToken );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LogonUserW( LPCWSTR lpszUsername, LPCWSTR lpszDomain, LPCWSTR lpszPassword, DWORD dwLogonType, DWORD dwLogonProvider, PHANDLE phToken )
+{
+    static FN_LogonUserW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LogonUserW", &g_Kernel32);
+    return pfn( lpszUsername, lpszDomain, lpszPassword, dwLogonType, dwLogonProvider, phToken );
+}
+
+typedef BOOL WINAPI FN_LogonUserExA( LPCSTR lpszUsername, LPCSTR lpszDomain, LPCSTR lpszPassword, DWORD dwLogonType, DWORD dwLogonProvider, PHANDLE phToken, PSID * ppLogonSid, PVOID * ppProfileBuffer, LPDWORD pdwProfileLength, PQUOTA_LIMITS pQuotaLimits );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LogonUserExA( LPCSTR lpszUsername, LPCSTR lpszDomain, LPCSTR lpszPassword, DWORD dwLogonType, DWORD dwLogonProvider, PHANDLE phToken, PSID * ppLogonSid, PVOID * ppProfileBuffer, LPDWORD pdwProfileLength, PQUOTA_LIMITS pQuotaLimits )
+{
+    static FN_LogonUserExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LogonUserExA", &g_Kernel32);
+    return pfn( lpszUsername, lpszDomain, lpszPassword, dwLogonType, dwLogonProvider, phToken, ppLogonSid, ppProfileBuffer, pdwProfileLength, pQuotaLimits );
+}
+
+typedef BOOL WINAPI FN_LogonUserExW( LPCWSTR lpszUsername, LPCWSTR lpszDomain, LPCWSTR lpszPassword, DWORD dwLogonType, DWORD dwLogonProvider, PHANDLE phToken, PSID * ppLogonSid, PVOID * ppProfileBuffer, LPDWORD pdwProfileLength, PQUOTA_LIMITS pQuotaLimits );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_LogonUserExW( LPCWSTR lpszUsername, LPCWSTR lpszDomain, LPCWSTR lpszPassword, DWORD dwLogonType, DWORD dwLogonProvider, PHANDLE phToken, PSID * ppLogonSid, PVOID * ppProfileBuffer, LPDWORD pdwProfileLength, PQUOTA_LIMITS pQuotaLimits )
+{
+    static FN_LogonUserExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LogonUserExW", &g_Kernel32);
+    return pfn( lpszUsername, lpszDomain, lpszPassword, dwLogonType, dwLogonProvider, phToken, ppLogonSid, ppProfileBuffer, pdwProfileLength, pQuotaLimits );
+}
+
+typedef BOOL WINAPI FN_ImpersonateLoggedOnUser( HANDLE hToken );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ImpersonateLoggedOnUser( HANDLE hToken )
+{
+    static FN_ImpersonateLoggedOnUser *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ImpersonateLoggedOnUser", &g_Kernel32);
+    return pfn( hToken );
+}
+
+typedef BOOL WINAPI FN_CreateProcessAsUserA( HANDLE hToken, LPCSTR lpApplicationName, LPSTR lpCommandLine, LPSECURITY_ATTRIBUTES lpProcessAttributes, LPSECURITY_ATTRIBUTES lpThreadAttributes, BOOL bInheritHandles, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCSTR lpCurrentDirectory, LPSTARTUPINFOA lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateProcessAsUserA( HANDLE hToken, LPCSTR lpApplicationName, LPSTR lpCommandLine, LPSECURITY_ATTRIBUTES lpProcessAttributes, LPSECURITY_ATTRIBUTES lpThreadAttributes, BOOL bInheritHandles, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCSTR lpCurrentDirectory, LPSTARTUPINFOA lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation )
+{
+    static FN_CreateProcessAsUserA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateProcessAsUserA", &g_Kernel32);
+    return pfn( hToken, lpApplicationName, lpCommandLine, lpProcessAttributes, lpThreadAttributes, bInheritHandles, dwCreationFlags, lpEnvironment, lpCurrentDirectory, lpStartupInfo, lpProcessInformation );
+}
+
+typedef BOOL WINAPI FN_CreateProcessAsUserW( HANDLE hToken, LPCWSTR lpApplicationName, LPWSTR lpCommandLine, LPSECURITY_ATTRIBUTES lpProcessAttributes, LPSECURITY_ATTRIBUTES lpThreadAttributes, BOOL bInheritHandles, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCWSTR lpCurrentDirectory, LPSTARTUPINFOW lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateProcessAsUserW( HANDLE hToken, LPCWSTR lpApplicationName, LPWSTR lpCommandLine, LPSECURITY_ATTRIBUTES lpProcessAttributes, LPSECURITY_ATTRIBUTES lpThreadAttributes, BOOL bInheritHandles, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCWSTR lpCurrentDirectory, LPSTARTUPINFOW lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation )
+{
+    static FN_CreateProcessAsUserW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateProcessAsUserW", &g_Kernel32);
+    return pfn( hToken, lpApplicationName, lpCommandLine, lpProcessAttributes, lpThreadAttributes, bInheritHandles, dwCreationFlags, lpEnvironment, lpCurrentDirectory, lpStartupInfo, lpProcessInformation );
+}
+
+typedef BOOL WINAPI FN_CreateProcessWithLogonW( LPCWSTR lpUsername, LPCWSTR lpDomain, LPCWSTR lpPassword, DWORD dwLogonFlags, LPCWSTR lpApplicationName, LPWSTR lpCommandLine, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCWSTR lpCurrentDirectory, LPSTARTUPINFOW lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateProcessWithLogonW( LPCWSTR lpUsername, LPCWSTR lpDomain, LPCWSTR lpPassword, DWORD dwLogonFlags, LPCWSTR lpApplicationName, LPWSTR lpCommandLine, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCWSTR lpCurrentDirectory, LPSTARTUPINFOW lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation )
+{
+    static FN_CreateProcessWithLogonW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateProcessWithLogonW", &g_Kernel32);
+    return pfn( lpUsername, lpDomain, lpPassword, dwLogonFlags, lpApplicationName, lpCommandLine, dwCreationFlags, lpEnvironment, lpCurrentDirectory, lpStartupInfo, lpProcessInformation );
+}
+
+typedef BOOL WINAPI FN_CreateProcessWithTokenW( HANDLE hToken, DWORD dwLogonFlags, LPCWSTR lpApplicationName, LPWSTR lpCommandLine, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCWSTR lpCurrentDirectory, LPSTARTUPINFOW lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateProcessWithTokenW( HANDLE hToken, DWORD dwLogonFlags, LPCWSTR lpApplicationName, LPWSTR lpCommandLine, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCWSTR lpCurrentDirectory, LPSTARTUPINFOW lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation )
+{
+    static FN_CreateProcessWithTokenW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateProcessWithTokenW", &g_Kernel32);
+    return pfn( hToken, dwLogonFlags, lpApplicationName, lpCommandLine, dwCreationFlags, lpEnvironment, lpCurrentDirectory, lpStartupInfo, lpProcessInformation );
+}
+
+typedef BOOL APIENTRY FN_ImpersonateAnonymousToken( HANDLE ThreadHandle );
+__declspec(dllexport) BOOL APIENTRY kPrf2Wrap_ImpersonateAnonymousToken( HANDLE ThreadHandle )
+{
+    static FN_ImpersonateAnonymousToken *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ImpersonateAnonymousToken", &g_Kernel32);
+    return pfn( ThreadHandle );
+}
+
+typedef BOOL WINAPI FN_DuplicateTokenEx( HANDLE hExistingToken, DWORD dwDesiredAccess, LPSECURITY_ATTRIBUTES lpTokenAttributes, SECURITY_IMPERSONATION_LEVEL ImpersonationLevel, TOKEN_TYPE TokenType, PHANDLE phNewToken );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DuplicateTokenEx( HANDLE hExistingToken, DWORD dwDesiredAccess, LPSECURITY_ATTRIBUTES lpTokenAttributes, SECURITY_IMPERSONATION_LEVEL ImpersonationLevel, TOKEN_TYPE TokenType, PHANDLE phNewToken )
+{
+    static FN_DuplicateTokenEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DuplicateTokenEx", &g_Kernel32);
+    return pfn( hExistingToken, dwDesiredAccess, lpTokenAttributes, ImpersonationLevel, TokenType, phNewToken );
+}
+
+typedef BOOL APIENTRY FN_CreateRestrictedToken( HANDLE ExistingTokenHandle, DWORD Flags, DWORD DisableSidCount, PSID_AND_ATTRIBUTES SidsToDisable, DWORD DeletePrivilegeCount, PLUID_AND_ATTRIBUTES PrivilegesToDelete, DWORD RestrictedSidCount, PSID_AND_ATTRIBUTES SidsToRestrict, PHANDLE NewTokenHandle );
+__declspec(dllexport) BOOL APIENTRY kPrf2Wrap_CreateRestrictedToken( HANDLE ExistingTokenHandle, DWORD Flags, DWORD DisableSidCount, PSID_AND_ATTRIBUTES SidsToDisable, DWORD DeletePrivilegeCount, PLUID_AND_ATTRIBUTES PrivilegesToDelete, DWORD RestrictedSidCount, PSID_AND_ATTRIBUTES SidsToRestrict, PHANDLE NewTokenHandle )
+{
+    static FN_CreateRestrictedToken *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateRestrictedToken", &g_Kernel32);
+    return pfn( ExistingTokenHandle, Flags, DisableSidCount, SidsToDisable, DeletePrivilegeCount, PrivilegesToDelete, RestrictedSidCount, SidsToRestrict, NewTokenHandle );
+}
+
+typedef BOOL WINAPI FN_IsTokenRestricted( HANDLE TokenHandle );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsTokenRestricted( HANDLE TokenHandle )
+{
+    static FN_IsTokenRestricted *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsTokenRestricted", &g_Kernel32);
+    return pfn( TokenHandle );
+}
+
+typedef BOOL WINAPI FN_IsTokenUntrusted( HANDLE TokenHandle );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsTokenUntrusted( HANDLE TokenHandle )
+{
+    static FN_IsTokenUntrusted *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsTokenUntrusted", &g_Kernel32);
+    return pfn( TokenHandle );
+}
+
+typedef BOOL APIENTRY FN_CheckTokenMembership( HANDLE TokenHandle, PSID SidToCheck, PBOOL IsMember );
+__declspec(dllexport) BOOL APIENTRY kPrf2Wrap_CheckTokenMembership( HANDLE TokenHandle, PSID SidToCheck, PBOOL IsMember )
+{
+    static FN_CheckTokenMembership *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CheckTokenMembership", &g_Kernel32);
+    return pfn( TokenHandle, SidToCheck, IsMember );
+}
+
+typedef BOOL WINAPI FN_RegisterWaitForSingleObject( PHANDLE phNewWaitObject, HANDLE hObject, WAITORTIMERCALLBACK Callback, PVOID Context, ULONG dwMilliseconds, ULONG dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_RegisterWaitForSingleObject( PHANDLE phNewWaitObject, HANDLE hObject, WAITORTIMERCALLBACK Callback, PVOID Context, ULONG dwMilliseconds, ULONG dwFlags )
+{
+    static FN_RegisterWaitForSingleObject *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RegisterWaitForSingleObject", &g_Kernel32);
+    return pfn( phNewWaitObject, hObject, Callback, Context, dwMilliseconds, dwFlags );
+}
+
+typedef HANDLE WINAPI FN_RegisterWaitForSingleObjectEx( HANDLE hObject, WAITORTIMERCALLBACK Callback, PVOID Context, ULONG dwMilliseconds, ULONG dwFlags );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_RegisterWaitForSingleObjectEx( HANDLE hObject, WAITORTIMERCALLBACK Callback, PVOID Context, ULONG dwMilliseconds, ULONG dwFlags )
+{
+    static FN_RegisterWaitForSingleObjectEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RegisterWaitForSingleObjectEx", &g_Kernel32);
+    return pfn( hObject, Callback, Context, dwMilliseconds, dwFlags );
+}
+
+typedef BOOL WINAPI FN_UnregisterWait( HANDLE WaitHandle );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_UnregisterWait( HANDLE WaitHandle )
+{
+    static FN_UnregisterWait *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "UnregisterWait", &g_Kernel32);
+    return pfn( WaitHandle );
+}
+
+typedef BOOL WINAPI FN_UnregisterWaitEx( HANDLE WaitHandle, HANDLE CompletionEvent );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_UnregisterWaitEx( HANDLE WaitHandle, HANDLE CompletionEvent )
+{
+    static FN_UnregisterWaitEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "UnregisterWaitEx", &g_Kernel32);
+    return pfn( WaitHandle, CompletionEvent );
+}
+
+typedef BOOL WINAPI FN_QueueUserWorkItem( LPTHREAD_START_ROUTINE Function, PVOID Context, ULONG Flags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_QueueUserWorkItem( LPTHREAD_START_ROUTINE Function, PVOID Context, ULONG Flags )
+{
+    static FN_QueueUserWorkItem *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "QueueUserWorkItem", &g_Kernel32);
+    return pfn( Function, Context, Flags );
+}
+
+typedef BOOL WINAPI FN_BindIoCompletionCallback( HANDLE FileHandle, LPOVERLAPPED_COMPLETION_ROUTINE Function, ULONG Flags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_BindIoCompletionCallback( HANDLE FileHandle, LPOVERLAPPED_COMPLETION_ROUTINE Function, ULONG Flags )
+{
+    static FN_BindIoCompletionCallback *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "BindIoCompletionCallback", &g_Kernel32);
+    return pfn( FileHandle, Function, Flags );
+}
+
+typedef HANDLE WINAPI FN_CreateTimerQueue( VOID );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateTimerQueue( VOID )
+{
+    static FN_CreateTimerQueue *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateTimerQueue", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_CreateTimerQueueTimer( PHANDLE phNewTimer, HANDLE TimerQueue, WAITORTIMERCALLBACK Callback, PVOID Parameter, DWORD DueTime, DWORD Period, ULONG Flags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateTimerQueueTimer( PHANDLE phNewTimer, HANDLE TimerQueue, WAITORTIMERCALLBACK Callback, PVOID Parameter, DWORD DueTime, DWORD Period, ULONG Flags )
+{
+    static FN_CreateTimerQueueTimer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateTimerQueueTimer", &g_Kernel32);
+    return pfn( phNewTimer, TimerQueue, Callback, Parameter, DueTime, Period, Flags );
+}
+
+typedef BOOL WINAPI FN_ChangeTimerQueueTimer( HANDLE TimerQueue, HANDLE Timer, ULONG DueTime, ULONG Period );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ChangeTimerQueueTimer( HANDLE TimerQueue, HANDLE Timer, ULONG DueTime, ULONG Period )
+{
+    static FN_ChangeTimerQueueTimer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ChangeTimerQueueTimer", &g_Kernel32);
+    return pfn( TimerQueue, Timer, DueTime, Period );
+}
+
+typedef BOOL WINAPI FN_DeleteTimerQueueTimer( HANDLE TimerQueue, HANDLE Timer, HANDLE CompletionEvent );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DeleteTimerQueueTimer( HANDLE TimerQueue, HANDLE Timer, HANDLE CompletionEvent )
+{
+    static FN_DeleteTimerQueueTimer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeleteTimerQueueTimer", &g_Kernel32);
+    return pfn( TimerQueue, Timer, CompletionEvent );
+}
+
+typedef BOOL WINAPI FN_DeleteTimerQueueEx( HANDLE TimerQueue, HANDLE CompletionEvent );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DeleteTimerQueueEx( HANDLE TimerQueue, HANDLE CompletionEvent )
+{
+    static FN_DeleteTimerQueueEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeleteTimerQueueEx", &g_Kernel32);
+    return pfn( TimerQueue, CompletionEvent );
+}
+
+typedef HANDLE WINAPI FN_SetTimerQueueTimer( HANDLE TimerQueue, WAITORTIMERCALLBACK Callback, PVOID Parameter, DWORD DueTime, DWORD Period, BOOL PreferIo );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_SetTimerQueueTimer( HANDLE TimerQueue, WAITORTIMERCALLBACK Callback, PVOID Parameter, DWORD DueTime, DWORD Period, BOOL PreferIo )
+{
+    static FN_SetTimerQueueTimer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetTimerQueueTimer", &g_Kernel32);
+    return pfn( TimerQueue, Callback, Parameter, DueTime, Period, PreferIo );
+}
+
+typedef BOOL WINAPI FN_CancelTimerQueueTimer( HANDLE TimerQueue, HANDLE Timer );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CancelTimerQueueTimer( HANDLE TimerQueue, HANDLE Timer )
+{
+    static FN_CancelTimerQueueTimer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CancelTimerQueueTimer", &g_Kernel32);
+    return pfn( TimerQueue, Timer );
+}
+
+typedef BOOL WINAPI FN_DeleteTimerQueue( HANDLE TimerQueue );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DeleteTimerQueue( HANDLE TimerQueue )
+{
+    static FN_DeleteTimerQueue *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeleteTimerQueue", &g_Kernel32);
+    return pfn( TimerQueue );
+}
+
+typedef BOOL WINAPI FN_GetCurrentHwProfileA( LPHW_PROFILE_INFOA lpHwProfileInfo );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCurrentHwProfileA( LPHW_PROFILE_INFOA lpHwProfileInfo )
+{
+    static FN_GetCurrentHwProfileA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrentHwProfileA", &g_Kernel32);
+    return pfn( lpHwProfileInfo );
+}
+
+typedef BOOL WINAPI FN_GetCurrentHwProfileW( LPHW_PROFILE_INFOW lpHwProfileInfo );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCurrentHwProfileW( LPHW_PROFILE_INFOW lpHwProfileInfo )
+{
+    static FN_GetCurrentHwProfileW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrentHwProfileW", &g_Kernel32);
+    return pfn( lpHwProfileInfo );
+}
+
+typedef BOOL WINAPI FN_QueryPerformanceCounter( LARGE_INTEGER * lpPerformanceCount );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_QueryPerformanceCounter( LARGE_INTEGER * lpPerformanceCount )
+{
+    static FN_QueryPerformanceCounter *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "QueryPerformanceCounter", &g_Kernel32);
+    return pfn( lpPerformanceCount );
+}
+
+typedef BOOL WINAPI FN_QueryPerformanceFrequency( LARGE_INTEGER * lpFrequency );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_QueryPerformanceFrequency( LARGE_INTEGER * lpFrequency )
+{
+    static FN_QueryPerformanceFrequency *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "QueryPerformanceFrequency", &g_Kernel32);
+    return pfn( lpFrequency );
+}
+
+typedef BOOL WINAPI FN_GetVersionExA( LPOSVERSIONINFOA lpVersionInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetVersionExA( LPOSVERSIONINFOA lpVersionInformation )
+{
+    static FN_GetVersionExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetVersionExA", &g_Kernel32);
+    return pfn( lpVersionInformation );
+}
+
+typedef BOOL WINAPI FN_GetVersionExW( LPOSVERSIONINFOW lpVersionInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetVersionExW( LPOSVERSIONINFOW lpVersionInformation )
+{
+    static FN_GetVersionExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetVersionExW", &g_Kernel32);
+    return pfn( lpVersionInformation );
+}
+
+typedef BOOL WINAPI FN_VerifyVersionInfoA( LPOSVERSIONINFOEXA lpVersionInformation, DWORD dwTypeMask, DWORDLONG dwlConditionMask );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_VerifyVersionInfoA( LPOSVERSIONINFOEXA lpVersionInformation, DWORD dwTypeMask, DWORDLONG dwlConditionMask )
+{
+    static FN_VerifyVersionInfoA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VerifyVersionInfoA", &g_Kernel32);
+    return pfn( lpVersionInformation, dwTypeMask, dwlConditionMask );
+}
+
+typedef BOOL WINAPI FN_VerifyVersionInfoW( LPOSVERSIONINFOEXW lpVersionInformation, DWORD dwTypeMask, DWORDLONG dwlConditionMask );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_VerifyVersionInfoW( LPOSVERSIONINFOEXW lpVersionInformation, DWORD dwTypeMask, DWORDLONG dwlConditionMask )
+{
+    static FN_VerifyVersionInfoW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VerifyVersionInfoW", &g_Kernel32);
+    return pfn( lpVersionInformation, dwTypeMask, dwlConditionMask );
+}
+
+typedef BOOL WINAPI FN_GetSystemPowerStatus( LPSYSTEM_POWER_STATUS lpSystemPowerStatus );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetSystemPowerStatus( LPSYSTEM_POWER_STATUS lpSystemPowerStatus )
+{
+    static FN_GetSystemPowerStatus *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemPowerStatus", &g_Kernel32);
+    return pfn( lpSystemPowerStatus );
+}
+
+typedef BOOL WINAPI FN_SetSystemPowerState( BOOL fSuspend, BOOL fForce );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetSystemPowerState( BOOL fSuspend, BOOL fForce )
+{
+    static FN_SetSystemPowerState *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetSystemPowerState", &g_Kernel32);
+    return pfn( fSuspend, fForce );
+}
+
+typedef BOOL WINAPI FN_AllocateUserPhysicalPages( HANDLE hProcess, PULONG_PTR NumberOfPages, PULONG_PTR PageArray );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AllocateUserPhysicalPages( HANDLE hProcess, PULONG_PTR NumberOfPages, PULONG_PTR PageArray )
+{
+    static FN_AllocateUserPhysicalPages *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AllocateUserPhysicalPages", &g_Kernel32);
+    return pfn( hProcess, NumberOfPages, PageArray );
+}
+
+typedef BOOL WINAPI FN_FreeUserPhysicalPages( HANDLE hProcess, PULONG_PTR NumberOfPages, PULONG_PTR PageArray );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FreeUserPhysicalPages( HANDLE hProcess, PULONG_PTR NumberOfPages, PULONG_PTR PageArray )
+{
+    static FN_FreeUserPhysicalPages *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FreeUserPhysicalPages", &g_Kernel32);
+    return pfn( hProcess, NumberOfPages, PageArray );
+}
+
+typedef BOOL WINAPI FN_MapUserPhysicalPages( PVOID VirtualAddress, ULONG_PTR NumberOfPages, PULONG_PTR PageArray );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_MapUserPhysicalPages( PVOID VirtualAddress, ULONG_PTR NumberOfPages, PULONG_PTR PageArray )
+{
+    static FN_MapUserPhysicalPages *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MapUserPhysicalPages", &g_Kernel32);
+    return pfn( VirtualAddress, NumberOfPages, PageArray );
+}
+
+typedef BOOL WINAPI FN_MapUserPhysicalPagesScatter( PVOID * VirtualAddresses, ULONG_PTR NumberOfPages, PULONG_PTR PageArray );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_MapUserPhysicalPagesScatter( PVOID * VirtualAddresses, ULONG_PTR NumberOfPages, PULONG_PTR PageArray )
+{
+    static FN_MapUserPhysicalPagesScatter *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MapUserPhysicalPagesScatter", &g_Kernel32);
+    return pfn( VirtualAddresses, NumberOfPages, PageArray );
+}
+
+typedef HANDLE WINAPI FN_CreateJobObjectA( LPSECURITY_ATTRIBUTES lpJobAttributes, LPCSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateJobObjectA( LPSECURITY_ATTRIBUTES lpJobAttributes, LPCSTR lpName )
+{
+    static FN_CreateJobObjectA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateJobObjectA", &g_Kernel32);
+    return pfn( lpJobAttributes, lpName );
+}
+
+typedef HANDLE WINAPI FN_CreateJobObjectW( LPSECURITY_ATTRIBUTES lpJobAttributes, LPCWSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateJobObjectW( LPSECURITY_ATTRIBUTES lpJobAttributes, LPCWSTR lpName )
+{
+    static FN_CreateJobObjectW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateJobObjectW", &g_Kernel32);
+    return pfn( lpJobAttributes, lpName );
+}
+
+typedef HANDLE WINAPI FN_OpenJobObjectA( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenJobObjectA( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName )
+{
+    static FN_OpenJobObjectA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenJobObjectA", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, lpName );
+}
+
+typedef HANDLE WINAPI FN_OpenJobObjectW( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_OpenJobObjectW( DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName )
+{
+    static FN_OpenJobObjectW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "OpenJobObjectW", &g_Kernel32);
+    return pfn( dwDesiredAccess, bInheritHandle, lpName );
+}
+
+typedef BOOL WINAPI FN_AssignProcessToJobObject( HANDLE hJob, HANDLE hProcess );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AssignProcessToJobObject( HANDLE hJob, HANDLE hProcess )
+{
+    static FN_AssignProcessToJobObject *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AssignProcessToJobObject", &g_Kernel32);
+    return pfn( hJob, hProcess );
+}
+
+typedef BOOL WINAPI FN_TerminateJobObject( HANDLE hJob, UINT uExitCode );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_TerminateJobObject( HANDLE hJob, UINT uExitCode )
+{
+    static FN_TerminateJobObject *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "TerminateJobObject", &g_Kernel32);
+    return pfn( hJob, uExitCode );
+}
+
+typedef BOOL WINAPI FN_QueryInformationJobObject( HANDLE hJob, JOBOBJECTINFOCLASS JobObjectInformationClass, LPVOID lpJobObjectInformation, DWORD cbJobObjectInformationLength, LPDWORD lpReturnLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_QueryInformationJobObject( HANDLE hJob, JOBOBJECTINFOCLASS JobObjectInformationClass, LPVOID lpJobObjectInformation, DWORD cbJobObjectInformationLength, LPDWORD lpReturnLength )
+{
+    static FN_QueryInformationJobObject *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "QueryInformationJobObject", &g_Kernel32);
+    return pfn( hJob, JobObjectInformationClass, lpJobObjectInformation, cbJobObjectInformationLength, lpReturnLength );
+}
+
+typedef BOOL WINAPI FN_SetInformationJobObject( HANDLE hJob, JOBOBJECTINFOCLASS JobObjectInformationClass, LPVOID lpJobObjectInformation, DWORD cbJobObjectInformationLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetInformationJobObject( HANDLE hJob, JOBOBJECTINFOCLASS JobObjectInformationClass, LPVOID lpJobObjectInformation, DWORD cbJobObjectInformationLength )
+{
+    static FN_SetInformationJobObject *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetInformationJobObject", &g_Kernel32);
+    return pfn( hJob, JobObjectInformationClass, lpJobObjectInformation, cbJobObjectInformationLength );
+}
+
+typedef BOOL WINAPI FN_IsProcessInJob( HANDLE ProcessHandle, HANDLE JobHandle, PBOOL Result );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsProcessInJob( HANDLE ProcessHandle, HANDLE JobHandle, PBOOL Result )
+{
+    static FN_IsProcessInJob *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsProcessInJob", &g_Kernel32);
+    return pfn( ProcessHandle, JobHandle, Result );
+}
+
+typedef BOOL WINAPI FN_CreateJobSet( ULONG NumJob, PJOB_SET_ARRAY UserJobSet, ULONG Flags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_CreateJobSet( ULONG NumJob, PJOB_SET_ARRAY UserJobSet, ULONG Flags )
+{
+    static FN_CreateJobSet *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateJobSet", &g_Kernel32);
+    return pfn( NumJob, UserJobSet, Flags );
+}
+
+typedef PVOID WINAPI FN_AddVectoredExceptionHandler( ULONG First, PVECTORED_EXCEPTION_HANDLER Handler );
+__declspec(dllexport) PVOID WINAPI kPrf2Wrap_AddVectoredExceptionHandler( ULONG First, PVECTORED_EXCEPTION_HANDLER Handler )
+{
+    static FN_AddVectoredExceptionHandler *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddVectoredExceptionHandler", &g_Kernel32);
+    return pfn( First, Handler );
+}
+
+typedef ULONG WINAPI FN_RemoveVectoredExceptionHandler( PVOID Handle );
+__declspec(dllexport) ULONG WINAPI kPrf2Wrap_RemoveVectoredExceptionHandler( PVOID Handle )
+{
+    static FN_RemoveVectoredExceptionHandler *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RemoveVectoredExceptionHandler", &g_Kernel32);
+    return pfn( Handle );
+}
+
+typedef PVOID WINAPI FN_AddVectoredContinueHandler( ULONG First, PVECTORED_EXCEPTION_HANDLER Handler );
+__declspec(dllexport) PVOID WINAPI kPrf2Wrap_AddVectoredContinueHandler( ULONG First, PVECTORED_EXCEPTION_HANDLER Handler )
+{
+    static FN_AddVectoredContinueHandler *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddVectoredContinueHandler", &g_Kernel32);
+    return pfn( First, Handler );
+}
+
+typedef ULONG WINAPI FN_RemoveVectoredContinueHandler( PVOID Handle );
+__declspec(dllexport) ULONG WINAPI kPrf2Wrap_RemoveVectoredContinueHandler( PVOID Handle )
+{
+    static FN_RemoveVectoredContinueHandler *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RemoveVectoredContinueHandler", &g_Kernel32);
+    return pfn( Handle );
+}
+
+typedef HANDLE WINAPI FN_FindFirstVolumeA( LPSTR lpszVolumeName, DWORD cchBufferLength );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_FindFirstVolumeA( LPSTR lpszVolumeName, DWORD cchBufferLength )
+{
+    static FN_FindFirstVolumeA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindFirstVolumeA", &g_Kernel32);
+    return pfn( lpszVolumeName, cchBufferLength );
+}
+
+typedef HANDLE WINAPI FN_FindFirstVolumeW( LPWSTR lpszVolumeName, DWORD cchBufferLength );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_FindFirstVolumeW( LPWSTR lpszVolumeName, DWORD cchBufferLength )
+{
+    static FN_FindFirstVolumeW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindFirstVolumeW", &g_Kernel32);
+    return pfn( lpszVolumeName, cchBufferLength );
+}
+
+typedef BOOL WINAPI FN_FindNextVolumeA( HANDLE hFindVolume, LPSTR lpszVolumeName, DWORD cchBufferLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindNextVolumeA( HANDLE hFindVolume, LPSTR lpszVolumeName, DWORD cchBufferLength )
+{
+    static FN_FindNextVolumeA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindNextVolumeA", &g_Kernel32);
+    return pfn( hFindVolume, lpszVolumeName, cchBufferLength );
+}
+
+typedef BOOL WINAPI FN_FindNextVolumeW( HANDLE hFindVolume, LPWSTR lpszVolumeName, DWORD cchBufferLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindNextVolumeW( HANDLE hFindVolume, LPWSTR lpszVolumeName, DWORD cchBufferLength )
+{
+    static FN_FindNextVolumeW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindNextVolumeW", &g_Kernel32);
+    return pfn( hFindVolume, lpszVolumeName, cchBufferLength );
+}
+
+typedef BOOL WINAPI FN_FindVolumeClose( HANDLE hFindVolume );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindVolumeClose( HANDLE hFindVolume )
+{
+    static FN_FindVolumeClose *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindVolumeClose", &g_Kernel32);
+    return pfn( hFindVolume );
+}
+
+typedef HANDLE WINAPI FN_FindFirstVolumeMountPointA( LPCSTR lpszRootPathName, LPSTR lpszVolumeMountPoint, DWORD cchBufferLength );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_FindFirstVolumeMountPointA( LPCSTR lpszRootPathName, LPSTR lpszVolumeMountPoint, DWORD cchBufferLength )
+{
+    static FN_FindFirstVolumeMountPointA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindFirstVolumeMountPointA", &g_Kernel32);
+    return pfn( lpszRootPathName, lpszVolumeMountPoint, cchBufferLength );
+}
+
+typedef HANDLE WINAPI FN_FindFirstVolumeMountPointW( LPCWSTR lpszRootPathName, LPWSTR lpszVolumeMountPoint, DWORD cchBufferLength );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_FindFirstVolumeMountPointW( LPCWSTR lpszRootPathName, LPWSTR lpszVolumeMountPoint, DWORD cchBufferLength )
+{
+    static FN_FindFirstVolumeMountPointW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindFirstVolumeMountPointW", &g_Kernel32);
+    return pfn( lpszRootPathName, lpszVolumeMountPoint, cchBufferLength );
+}
+
+typedef BOOL WINAPI FN_FindNextVolumeMountPointA( HANDLE hFindVolumeMountPoint, LPSTR lpszVolumeMountPoint, DWORD cchBufferLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindNextVolumeMountPointA( HANDLE hFindVolumeMountPoint, LPSTR lpszVolumeMountPoint, DWORD cchBufferLength )
+{
+    static FN_FindNextVolumeMountPointA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindNextVolumeMountPointA", &g_Kernel32);
+    return pfn( hFindVolumeMountPoint, lpszVolumeMountPoint, cchBufferLength );
+}
+
+typedef BOOL WINAPI FN_FindNextVolumeMountPointW( HANDLE hFindVolumeMountPoint, LPWSTR lpszVolumeMountPoint, DWORD cchBufferLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindNextVolumeMountPointW( HANDLE hFindVolumeMountPoint, LPWSTR lpszVolumeMountPoint, DWORD cchBufferLength )
+{
+    static FN_FindNextVolumeMountPointW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindNextVolumeMountPointW", &g_Kernel32);
+    return pfn( hFindVolumeMountPoint, lpszVolumeMountPoint, cchBufferLength );
+}
+
+typedef BOOL WINAPI FN_FindVolumeMountPointClose( HANDLE hFindVolumeMountPoint );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindVolumeMountPointClose( HANDLE hFindVolumeMountPoint )
+{
+    static FN_FindVolumeMountPointClose *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindVolumeMountPointClose", &g_Kernel32);
+    return pfn( hFindVolumeMountPoint );
+}
+
+typedef BOOL WINAPI FN_SetVolumeMountPointA( LPCSTR lpszVolumeMountPoint, LPCSTR lpszVolumeName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetVolumeMountPointA( LPCSTR lpszVolumeMountPoint, LPCSTR lpszVolumeName )
+{
+    static FN_SetVolumeMountPointA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetVolumeMountPointA", &g_Kernel32);
+    return pfn( lpszVolumeMountPoint, lpszVolumeName );
+}
+
+typedef BOOL WINAPI FN_SetVolumeMountPointW( LPCWSTR lpszVolumeMountPoint, LPCWSTR lpszVolumeName );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetVolumeMountPointW( LPCWSTR lpszVolumeMountPoint, LPCWSTR lpszVolumeName )
+{
+    static FN_SetVolumeMountPointW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetVolumeMountPointW", &g_Kernel32);
+    return pfn( lpszVolumeMountPoint, lpszVolumeName );
+}
+
+typedef BOOL WINAPI FN_DeleteVolumeMountPointA( LPCSTR lpszVolumeMountPoint );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DeleteVolumeMountPointA( LPCSTR lpszVolumeMountPoint )
+{
+    static FN_DeleteVolumeMountPointA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeleteVolumeMountPointA", &g_Kernel32);
+    return pfn( lpszVolumeMountPoint );
+}
+
+typedef BOOL WINAPI FN_DeleteVolumeMountPointW( LPCWSTR lpszVolumeMountPoint );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DeleteVolumeMountPointW( LPCWSTR lpszVolumeMountPoint )
+{
+    static FN_DeleteVolumeMountPointW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeleteVolumeMountPointW", &g_Kernel32);
+    return pfn( lpszVolumeMountPoint );
+}
+
+typedef BOOL WINAPI FN_GetVolumeNameForVolumeMountPointA( LPCSTR lpszVolumeMountPoint, LPSTR lpszVolumeName, DWORD cchBufferLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetVolumeNameForVolumeMountPointA( LPCSTR lpszVolumeMountPoint, LPSTR lpszVolumeName, DWORD cchBufferLength )
+{
+    static FN_GetVolumeNameForVolumeMountPointA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetVolumeNameForVolumeMountPointA", &g_Kernel32);
+    return pfn( lpszVolumeMountPoint, lpszVolumeName, cchBufferLength );
+}
+
+typedef BOOL WINAPI FN_GetVolumeNameForVolumeMountPointW( LPCWSTR lpszVolumeMountPoint, LPWSTR lpszVolumeName, DWORD cchBufferLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetVolumeNameForVolumeMountPointW( LPCWSTR lpszVolumeMountPoint, LPWSTR lpszVolumeName, DWORD cchBufferLength )
+{
+    static FN_GetVolumeNameForVolumeMountPointW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetVolumeNameForVolumeMountPointW", &g_Kernel32);
+    return pfn( lpszVolumeMountPoint, lpszVolumeName, cchBufferLength );
+}
+
+typedef BOOL WINAPI FN_GetVolumePathNameA( LPCSTR lpszFileName, LPSTR lpszVolumePathName, DWORD cchBufferLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetVolumePathNameA( LPCSTR lpszFileName, LPSTR lpszVolumePathName, DWORD cchBufferLength )
+{
+    static FN_GetVolumePathNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetVolumePathNameA", &g_Kernel32);
+    return pfn( lpszFileName, lpszVolumePathName, cchBufferLength );
+}
+
+typedef BOOL WINAPI FN_GetVolumePathNameW( LPCWSTR lpszFileName, LPWSTR lpszVolumePathName, DWORD cchBufferLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetVolumePathNameW( LPCWSTR lpszFileName, LPWSTR lpszVolumePathName, DWORD cchBufferLength )
+{
+    static FN_GetVolumePathNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetVolumePathNameW", &g_Kernel32);
+    return pfn( lpszFileName, lpszVolumePathName, cchBufferLength );
+}
+
+typedef BOOL WINAPI FN_GetVolumePathNamesForVolumeNameA( LPCSTR lpszVolumeName, LPCH lpszVolumePathNames, DWORD cchBufferLength, PDWORD lpcchReturnLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetVolumePathNamesForVolumeNameA( LPCSTR lpszVolumeName, LPCH lpszVolumePathNames, DWORD cchBufferLength, PDWORD lpcchReturnLength )
+{
+    static FN_GetVolumePathNamesForVolumeNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetVolumePathNamesForVolumeNameA", &g_Kernel32);
+    return pfn( lpszVolumeName, lpszVolumePathNames, cchBufferLength, lpcchReturnLength );
+}
+
+typedef BOOL WINAPI FN_GetVolumePathNamesForVolumeNameW( LPCWSTR lpszVolumeName, LPWCH lpszVolumePathNames, DWORD cchBufferLength, PDWORD lpcchReturnLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetVolumePathNamesForVolumeNameW( LPCWSTR lpszVolumeName, LPWCH lpszVolumePathNames, DWORD cchBufferLength, PDWORD lpcchReturnLength )
+{
+    static FN_GetVolumePathNamesForVolumeNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetVolumePathNamesForVolumeNameW", &g_Kernel32);
+    return pfn( lpszVolumeName, lpszVolumePathNames, cchBufferLength, lpcchReturnLength );
+}
+
+typedef HANDLE WINAPI FN_CreateActCtxA( PCACTCTXA pActCtx );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateActCtxA( PCACTCTXA pActCtx )
+{
+    static FN_CreateActCtxA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateActCtxA", &g_Kernel32);
+    return pfn( pActCtx );
+}
+
+typedef HANDLE WINAPI FN_CreateActCtxW( PCACTCTXW pActCtx );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateActCtxW( PCACTCTXW pActCtx )
+{
+    static FN_CreateActCtxW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateActCtxW", &g_Kernel32);
+    return pfn( pActCtx );
+}
+
+typedef VOID WINAPI FN_AddRefActCtx( HANDLE hActCtx );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_AddRefActCtx( HANDLE hActCtx )
+{
+    static FN_AddRefActCtx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddRefActCtx", &g_Kernel32);
+    pfn( hActCtx );
+}
+
+typedef VOID WINAPI FN_ReleaseActCtx( HANDLE hActCtx );
+__declspec(dllexport) VOID WINAPI kPrf2Wrap_ReleaseActCtx( HANDLE hActCtx )
+{
+    static FN_ReleaseActCtx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReleaseActCtx", &g_Kernel32);
+    pfn( hActCtx );
+}
+
+typedef BOOL WINAPI FN_ZombifyActCtx( HANDLE hActCtx );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ZombifyActCtx( HANDLE hActCtx )
+{
+    static FN_ZombifyActCtx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ZombifyActCtx", &g_Kernel32);
+    return pfn( hActCtx );
+}
+
+typedef BOOL WINAPI FN_ActivateActCtx( HANDLE hActCtx, ULONG_PTR * lpCookie );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ActivateActCtx( HANDLE hActCtx, ULONG_PTR * lpCookie )
+{
+    static FN_ActivateActCtx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ActivateActCtx", &g_Kernel32);
+    return pfn( hActCtx, lpCookie );
+}
+
+typedef BOOL WINAPI FN_DeactivateActCtx( DWORD dwFlags, ULONG_PTR ulCookie );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_DeactivateActCtx( DWORD dwFlags, ULONG_PTR ulCookie )
+{
+    static FN_DeactivateActCtx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "DeactivateActCtx", &g_Kernel32);
+    return pfn( dwFlags, ulCookie );
+}
+
+typedef BOOL WINAPI FN_GetCurrentActCtx( HANDLE * lphActCtx );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCurrentActCtx( HANDLE * lphActCtx )
+{
+    static FN_GetCurrentActCtx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrentActCtx", &g_Kernel32);
+    return pfn( lphActCtx );
+}
+
+typedef BOOL WINAPI FN_FindActCtxSectionStringA( DWORD dwFlags, const GUID * lpExtensionGuid, ULONG ulSectionId, LPCSTR lpStringToFind, PACTCTX_SECTION_KEYED_DATA ReturnedData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindActCtxSectionStringA( DWORD dwFlags, const GUID * lpExtensionGuid, ULONG ulSectionId, LPCSTR lpStringToFind, PACTCTX_SECTION_KEYED_DATA ReturnedData )
+{
+    static FN_FindActCtxSectionStringA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindActCtxSectionStringA", &g_Kernel32);
+    return pfn( dwFlags, lpExtensionGuid, ulSectionId, lpStringToFind, ReturnedData );
+}
+
+typedef BOOL WINAPI FN_FindActCtxSectionStringW( DWORD dwFlags, const GUID * lpExtensionGuid, ULONG ulSectionId, LPCWSTR lpStringToFind, PACTCTX_SECTION_KEYED_DATA ReturnedData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindActCtxSectionStringW( DWORD dwFlags, const GUID * lpExtensionGuid, ULONG ulSectionId, LPCWSTR lpStringToFind, PACTCTX_SECTION_KEYED_DATA ReturnedData )
+{
+    static FN_FindActCtxSectionStringW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindActCtxSectionStringW", &g_Kernel32);
+    return pfn( dwFlags, lpExtensionGuid, ulSectionId, lpStringToFind, ReturnedData );
+}
+
+typedef BOOL WINAPI FN_FindActCtxSectionGuid( DWORD dwFlags, const GUID * lpExtensionGuid, ULONG ulSectionId, const GUID * lpGuidToFind, PACTCTX_SECTION_KEYED_DATA ReturnedData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FindActCtxSectionGuid( DWORD dwFlags, const GUID * lpExtensionGuid, ULONG ulSectionId, const GUID * lpGuidToFind, PACTCTX_SECTION_KEYED_DATA ReturnedData )
+{
+    static FN_FindActCtxSectionGuid *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FindActCtxSectionGuid", &g_Kernel32);
+    return pfn( dwFlags, lpExtensionGuid, ulSectionId, lpGuidToFind, ReturnedData );
+}
+
+typedef BOOL WINAPI FN_QueryActCtxW( DWORD dwFlags, HANDLE hActCtx, PVOID pvSubInstance, ULONG ulInfoClass, PVOID pvBuffer, SIZE_T cbBuffer, SIZE_T * pcbWrittenOrRequired );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_QueryActCtxW( DWORD dwFlags, HANDLE hActCtx, PVOID pvSubInstance, ULONG ulInfoClass, PVOID pvBuffer, SIZE_T cbBuffer, SIZE_T * pcbWrittenOrRequired )
+{
+    static FN_QueryActCtxW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "QueryActCtxW", &g_Kernel32);
+    return pfn( dwFlags, hActCtx, pvSubInstance, ulInfoClass, pvBuffer, cbBuffer, pcbWrittenOrRequired );
+}
+
+typedef BOOL WINAPI FN_ProcessIdToSessionId( DWORD dwProcessId, DWORD * pSessionId );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ProcessIdToSessionId( DWORD dwProcessId, DWORD * pSessionId )
+{
+    static FN_ProcessIdToSessionId *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ProcessIdToSessionId", &g_Kernel32);
+    return pfn( dwProcessId, pSessionId );
+}
+
+typedef DWORD WINAPI FN_WTSGetActiveConsoleSessionId( );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_WTSGetActiveConsoleSessionId( )
+{
+    static FN_WTSGetActiveConsoleSessionId *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WTSGetActiveConsoleSessionId", &g_Kernel32);
+    return pfn( );
+}
+
+typedef BOOL WINAPI FN_IsWow64Process( HANDLE hProcess, PBOOL Wow64Process );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsWow64Process( HANDLE hProcess, PBOOL Wow64Process )
+{
+    static FN_IsWow64Process *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsWow64Process", &g_Kernel32);
+    return pfn( hProcess, Wow64Process );
+}
+
+typedef BOOL WINAPI FN_GetLogicalProcessorInformation( PSYSTEM_LOGICAL_PROCESSOR_INFORMATION Buffer, PDWORD ReturnedLength );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetLogicalProcessorInformation( PSYSTEM_LOGICAL_PROCESSOR_INFORMATION Buffer, PDWORD ReturnedLength )
+{
+    static FN_GetLogicalProcessorInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLogicalProcessorInformation", &g_Kernel32);
+    return pfn( Buffer, ReturnedLength );
+}
+
+typedef BOOL WINAPI FN_GetNumaHighestNodeNumber( PULONG HighestNodeNumber );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetNumaHighestNodeNumber( PULONG HighestNodeNumber )
+{
+    static FN_GetNumaHighestNodeNumber *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNumaHighestNodeNumber", &g_Kernel32);
+    return pfn( HighestNodeNumber );
+}
+
+typedef BOOL WINAPI FN_GetNumaProcessorNode( UCHAR Processor, PUCHAR NodeNumber );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetNumaProcessorNode( UCHAR Processor, PUCHAR NodeNumber )
+{
+    static FN_GetNumaProcessorNode *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNumaProcessorNode", &g_Kernel32);
+    return pfn( Processor, NodeNumber );
+}
+
+typedef BOOL WINAPI FN_GetNumaNodeProcessorMask( UCHAR Node, PULONGLONG ProcessorMask );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetNumaNodeProcessorMask( UCHAR Node, PULONGLONG ProcessorMask )
+{
+    static FN_GetNumaNodeProcessorMask *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNumaNodeProcessorMask", &g_Kernel32);
+    return pfn( Node, ProcessorMask );
+}
+
+typedef BOOL WINAPI FN_GetNumaAvailableMemoryNode( UCHAR Node, PULONGLONG AvailableBytes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetNumaAvailableMemoryNode( UCHAR Node, PULONGLONG AvailableBytes )
+{
+    static FN_GetNumaAvailableMemoryNode *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNumaAvailableMemoryNode", &g_Kernel32);
+    return pfn( Node, AvailableBytes );
+}
+
+typedef BOOL WINAPI FN_PeekConsoleInputA( IN HANDLE hConsoleInput, OUT PINPUT_RECORD lpBuffer, IN DWORD nLength, OUT LPDWORD lpNumberOfEventsRead );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_PeekConsoleInputA( IN HANDLE hConsoleInput, OUT PINPUT_RECORD lpBuffer, IN DWORD nLength, OUT LPDWORD lpNumberOfEventsRead )
+{
+    static FN_PeekConsoleInputA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "PeekConsoleInputA", &g_Kernel32);
+    return pfn( hConsoleInput, lpBuffer, nLength, lpNumberOfEventsRead );
+}
+
+typedef BOOL WINAPI FN_PeekConsoleInputW( IN HANDLE hConsoleInput, OUT PINPUT_RECORD lpBuffer, IN DWORD nLength, OUT LPDWORD lpNumberOfEventsRead );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_PeekConsoleInputW( IN HANDLE hConsoleInput, OUT PINPUT_RECORD lpBuffer, IN DWORD nLength, OUT LPDWORD lpNumberOfEventsRead )
+{
+    static FN_PeekConsoleInputW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "PeekConsoleInputW", &g_Kernel32);
+    return pfn( hConsoleInput, lpBuffer, nLength, lpNumberOfEventsRead );
+}
+
+typedef BOOL WINAPI FN_ReadConsoleInputA( IN HANDLE hConsoleInput, OUT PINPUT_RECORD lpBuffer, IN DWORD nLength, OUT LPDWORD lpNumberOfEventsRead );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadConsoleInputA( IN HANDLE hConsoleInput, OUT PINPUT_RECORD lpBuffer, IN DWORD nLength, OUT LPDWORD lpNumberOfEventsRead )
+{
+    static FN_ReadConsoleInputA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadConsoleInputA", &g_Kernel32);
+    return pfn( hConsoleInput, lpBuffer, nLength, lpNumberOfEventsRead );
+}
+
+typedef BOOL WINAPI FN_ReadConsoleInputW( IN HANDLE hConsoleInput, OUT PINPUT_RECORD lpBuffer, IN DWORD nLength, OUT LPDWORD lpNumberOfEventsRead );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadConsoleInputW( IN HANDLE hConsoleInput, OUT PINPUT_RECORD lpBuffer, IN DWORD nLength, OUT LPDWORD lpNumberOfEventsRead )
+{
+    static FN_ReadConsoleInputW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadConsoleInputW", &g_Kernel32);
+    return pfn( hConsoleInput, lpBuffer, nLength, lpNumberOfEventsRead );
+}
+
+typedef BOOL WINAPI FN_WriteConsoleInputA( IN HANDLE hConsoleInput, IN CONST INPUT_RECORD * lpBuffer, IN DWORD nLength, OUT LPDWORD lpNumberOfEventsWritten );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteConsoleInputA( IN HANDLE hConsoleInput, IN CONST INPUT_RECORD * lpBuffer, IN DWORD nLength, OUT LPDWORD lpNumberOfEventsWritten )
+{
+    static FN_WriteConsoleInputA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteConsoleInputA", &g_Kernel32);
+    return pfn( hConsoleInput, lpBuffer, nLength, lpNumberOfEventsWritten );
+}
+
+typedef BOOL WINAPI FN_WriteConsoleInputW( IN HANDLE hConsoleInput, IN CONST INPUT_RECORD * lpBuffer, IN DWORD nLength, OUT LPDWORD lpNumberOfEventsWritten );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteConsoleInputW( IN HANDLE hConsoleInput, IN CONST INPUT_RECORD * lpBuffer, IN DWORD nLength, OUT LPDWORD lpNumberOfEventsWritten )
+{
+    static FN_WriteConsoleInputW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteConsoleInputW", &g_Kernel32);
+    return pfn( hConsoleInput, lpBuffer, nLength, lpNumberOfEventsWritten );
+}
+
+typedef BOOL WINAPI FN_ReadConsoleOutputA( IN HANDLE hConsoleOutput, OUT PCHAR_INFO lpBuffer, IN COORD dwBufferSize, IN COORD dwBufferCoord, IN OUT PSMALL_RECT lpReadRegion );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadConsoleOutputA( IN HANDLE hConsoleOutput, OUT PCHAR_INFO lpBuffer, IN COORD dwBufferSize, IN COORD dwBufferCoord, IN OUT PSMALL_RECT lpReadRegion )
+{
+    static FN_ReadConsoleOutputA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadConsoleOutputA", &g_Kernel32);
+    return pfn( hConsoleOutput, lpBuffer, dwBufferSize, dwBufferCoord, lpReadRegion );
+}
+
+typedef BOOL WINAPI FN_ReadConsoleOutputW( IN HANDLE hConsoleOutput, OUT PCHAR_INFO lpBuffer, IN COORD dwBufferSize, IN COORD dwBufferCoord, IN OUT PSMALL_RECT lpReadRegion );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadConsoleOutputW( IN HANDLE hConsoleOutput, OUT PCHAR_INFO lpBuffer, IN COORD dwBufferSize, IN COORD dwBufferCoord, IN OUT PSMALL_RECT lpReadRegion )
+{
+    static FN_ReadConsoleOutputW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadConsoleOutputW", &g_Kernel32);
+    return pfn( hConsoleOutput, lpBuffer, dwBufferSize, dwBufferCoord, lpReadRegion );
+}
+
+typedef BOOL WINAPI FN_WriteConsoleOutputA( IN HANDLE hConsoleOutput, IN CONST CHAR_INFO * lpBuffer, IN COORD dwBufferSize, IN COORD dwBufferCoord, IN OUT PSMALL_RECT lpWriteRegion );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteConsoleOutputA( IN HANDLE hConsoleOutput, IN CONST CHAR_INFO * lpBuffer, IN COORD dwBufferSize, IN COORD dwBufferCoord, IN OUT PSMALL_RECT lpWriteRegion )
+{
+    static FN_WriteConsoleOutputA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteConsoleOutputA", &g_Kernel32);
+    return pfn( hConsoleOutput, lpBuffer, dwBufferSize, dwBufferCoord, lpWriteRegion );
+}
+
+typedef BOOL WINAPI FN_WriteConsoleOutputW( IN HANDLE hConsoleOutput, IN CONST CHAR_INFO * lpBuffer, IN COORD dwBufferSize, IN COORD dwBufferCoord, IN OUT PSMALL_RECT lpWriteRegion );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteConsoleOutputW( IN HANDLE hConsoleOutput, IN CONST CHAR_INFO * lpBuffer, IN COORD dwBufferSize, IN COORD dwBufferCoord, IN OUT PSMALL_RECT lpWriteRegion )
+{
+    static FN_WriteConsoleOutputW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteConsoleOutputW", &g_Kernel32);
+    return pfn( hConsoleOutput, lpBuffer, dwBufferSize, dwBufferCoord, lpWriteRegion );
+}
+
+typedef BOOL WINAPI FN_ReadConsoleOutputCharacterA( IN HANDLE hConsoleOutput, OUT LPSTR lpCharacter, IN DWORD nLength, IN COORD dwReadCoord, OUT LPDWORD lpNumberOfCharsRead );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadConsoleOutputCharacterA( IN HANDLE hConsoleOutput, OUT LPSTR lpCharacter, IN DWORD nLength, IN COORD dwReadCoord, OUT LPDWORD lpNumberOfCharsRead )
+{
+    static FN_ReadConsoleOutputCharacterA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadConsoleOutputCharacterA", &g_Kernel32);
+    return pfn( hConsoleOutput, lpCharacter, nLength, dwReadCoord, lpNumberOfCharsRead );
+}
+
+typedef BOOL WINAPI FN_ReadConsoleOutputCharacterW( IN HANDLE hConsoleOutput, OUT LPWSTR lpCharacter, IN DWORD nLength, IN COORD dwReadCoord, OUT LPDWORD lpNumberOfCharsRead );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadConsoleOutputCharacterW( IN HANDLE hConsoleOutput, OUT LPWSTR lpCharacter, IN DWORD nLength, IN COORD dwReadCoord, OUT LPDWORD lpNumberOfCharsRead )
+{
+    static FN_ReadConsoleOutputCharacterW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadConsoleOutputCharacterW", &g_Kernel32);
+    return pfn( hConsoleOutput, lpCharacter, nLength, dwReadCoord, lpNumberOfCharsRead );
+}
+
+typedef BOOL WINAPI FN_ReadConsoleOutputAttribute( IN HANDLE hConsoleOutput, OUT LPWORD lpAttribute, IN DWORD nLength, IN COORD dwReadCoord, OUT LPDWORD lpNumberOfAttrsRead );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadConsoleOutputAttribute( IN HANDLE hConsoleOutput, OUT LPWORD lpAttribute, IN DWORD nLength, IN COORD dwReadCoord, OUT LPDWORD lpNumberOfAttrsRead )
+{
+    static FN_ReadConsoleOutputAttribute *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadConsoleOutputAttribute", &g_Kernel32);
+    return pfn( hConsoleOutput, lpAttribute, nLength, dwReadCoord, lpNumberOfAttrsRead );
+}
+
+typedef BOOL WINAPI FN_WriteConsoleOutputCharacterA( IN HANDLE hConsoleOutput, IN LPCSTR lpCharacter, IN DWORD nLength, IN COORD dwWriteCoord, OUT LPDWORD lpNumberOfCharsWritten );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteConsoleOutputCharacterA( IN HANDLE hConsoleOutput, IN LPCSTR lpCharacter, IN DWORD nLength, IN COORD dwWriteCoord, OUT LPDWORD lpNumberOfCharsWritten )
+{
+    static FN_WriteConsoleOutputCharacterA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteConsoleOutputCharacterA", &g_Kernel32);
+    return pfn( hConsoleOutput, lpCharacter, nLength, dwWriteCoord, lpNumberOfCharsWritten );
+}
+
+typedef BOOL WINAPI FN_WriteConsoleOutputCharacterW( IN HANDLE hConsoleOutput, IN LPCWSTR lpCharacter, IN DWORD nLength, IN COORD dwWriteCoord, OUT LPDWORD lpNumberOfCharsWritten );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteConsoleOutputCharacterW( IN HANDLE hConsoleOutput, IN LPCWSTR lpCharacter, IN DWORD nLength, IN COORD dwWriteCoord, OUT LPDWORD lpNumberOfCharsWritten )
+{
+    static FN_WriteConsoleOutputCharacterW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteConsoleOutputCharacterW", &g_Kernel32);
+    return pfn( hConsoleOutput, lpCharacter, nLength, dwWriteCoord, lpNumberOfCharsWritten );
+}
+
+typedef BOOL WINAPI FN_WriteConsoleOutputAttribute( IN HANDLE hConsoleOutput, IN CONST WORD * lpAttribute, IN DWORD nLength, IN COORD dwWriteCoord, OUT LPDWORD lpNumberOfAttrsWritten );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteConsoleOutputAttribute( IN HANDLE hConsoleOutput, IN CONST WORD * lpAttribute, IN DWORD nLength, IN COORD dwWriteCoord, OUT LPDWORD lpNumberOfAttrsWritten )
+{
+    static FN_WriteConsoleOutputAttribute *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteConsoleOutputAttribute", &g_Kernel32);
+    return pfn( hConsoleOutput, lpAttribute, nLength, dwWriteCoord, lpNumberOfAttrsWritten );
+}
+
+typedef BOOL WINAPI FN_FillConsoleOutputCharacterA( IN HANDLE hConsoleOutput, IN CHAR cCharacter, IN DWORD nLength, IN COORD dwWriteCoord, OUT LPDWORD lpNumberOfCharsWritten );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FillConsoleOutputCharacterA( IN HANDLE hConsoleOutput, IN CHAR cCharacter, IN DWORD nLength, IN COORD dwWriteCoord, OUT LPDWORD lpNumberOfCharsWritten )
+{
+    static FN_FillConsoleOutputCharacterA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FillConsoleOutputCharacterA", &g_Kernel32);
+    return pfn( hConsoleOutput, cCharacter, nLength, dwWriteCoord, lpNumberOfCharsWritten );
+}
+
+typedef BOOL WINAPI FN_FillConsoleOutputCharacterW( IN HANDLE hConsoleOutput, IN WCHAR cCharacter, IN DWORD nLength, IN COORD dwWriteCoord, OUT LPDWORD lpNumberOfCharsWritten );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FillConsoleOutputCharacterW( IN HANDLE hConsoleOutput, IN WCHAR cCharacter, IN DWORD nLength, IN COORD dwWriteCoord, OUT LPDWORD lpNumberOfCharsWritten )
+{
+    static FN_FillConsoleOutputCharacterW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FillConsoleOutputCharacterW", &g_Kernel32);
+    return pfn( hConsoleOutput, cCharacter, nLength, dwWriteCoord, lpNumberOfCharsWritten );
+}
+
+typedef BOOL WINAPI FN_FillConsoleOutputAttribute( IN HANDLE hConsoleOutput, IN WORD wAttribute, IN DWORD nLength, IN COORD dwWriteCoord, OUT LPDWORD lpNumberOfAttrsWritten );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FillConsoleOutputAttribute( IN HANDLE hConsoleOutput, IN WORD wAttribute, IN DWORD nLength, IN COORD dwWriteCoord, OUT LPDWORD lpNumberOfAttrsWritten )
+{
+    static FN_FillConsoleOutputAttribute *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FillConsoleOutputAttribute", &g_Kernel32);
+    return pfn( hConsoleOutput, wAttribute, nLength, dwWriteCoord, lpNumberOfAttrsWritten );
+}
+
+typedef BOOL WINAPI FN_GetConsoleMode( IN HANDLE hConsoleHandle, OUT LPDWORD lpMode );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetConsoleMode( IN HANDLE hConsoleHandle, OUT LPDWORD lpMode )
+{
+    static FN_GetConsoleMode *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleMode", &g_Kernel32);
+    return pfn( hConsoleHandle, lpMode );
+}
+
+typedef BOOL WINAPI FN_GetNumberOfConsoleInputEvents( IN HANDLE hConsoleInput, OUT LPDWORD lpNumberOfEvents );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetNumberOfConsoleInputEvents( IN HANDLE hConsoleInput, OUT LPDWORD lpNumberOfEvents )
+{
+    static FN_GetNumberOfConsoleInputEvents *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNumberOfConsoleInputEvents", &g_Kernel32);
+    return pfn( hConsoleInput, lpNumberOfEvents );
+}
+
+typedef BOOL WINAPI FN_GetConsoleScreenBufferInfo( IN HANDLE hConsoleOutput, OUT PCONSOLE_SCREEN_BUFFER_INFO lpConsoleScreenBufferInfo );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetConsoleScreenBufferInfo( IN HANDLE hConsoleOutput, OUT PCONSOLE_SCREEN_BUFFER_INFO lpConsoleScreenBufferInfo )
+{
+    static FN_GetConsoleScreenBufferInfo *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleScreenBufferInfo", &g_Kernel32);
+    return pfn( hConsoleOutput, lpConsoleScreenBufferInfo );
+}
+
+typedef COORD WINAPI FN_GetLargestConsoleWindowSize( IN HANDLE hConsoleOutput );
+__declspec(dllexport) COORD WINAPI kPrf2Wrap_GetLargestConsoleWindowSize( IN HANDLE hConsoleOutput )
+{
+    static FN_GetLargestConsoleWindowSize *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLargestConsoleWindowSize", &g_Kernel32);
+    return pfn( hConsoleOutput );
+}
+
+typedef BOOL WINAPI FN_GetConsoleCursorInfo( IN HANDLE hConsoleOutput, OUT PCONSOLE_CURSOR_INFO lpConsoleCursorInfo );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetConsoleCursorInfo( IN HANDLE hConsoleOutput, OUT PCONSOLE_CURSOR_INFO lpConsoleCursorInfo )
+{
+    static FN_GetConsoleCursorInfo *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleCursorInfo", &g_Kernel32);
+    return pfn( hConsoleOutput, lpConsoleCursorInfo );
+}
+
+typedef BOOL WINAPI FN_GetCurrentConsoleFont( IN HANDLE hConsoleOutput, IN BOOL bMaximumWindow, OUT PCONSOLE_FONT_INFO lpConsoleCurrentFont );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCurrentConsoleFont( IN HANDLE hConsoleOutput, IN BOOL bMaximumWindow, OUT PCONSOLE_FONT_INFO lpConsoleCurrentFont )
+{
+    static FN_GetCurrentConsoleFont *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrentConsoleFont", &g_Kernel32);
+    return pfn( hConsoleOutput, bMaximumWindow, lpConsoleCurrentFont );
+}
+
+typedef COORD WINAPI FN_GetConsoleFontSize( IN HANDLE hConsoleOutput, IN DWORD nFont );
+__declspec(dllexport) COORD WINAPI kPrf2Wrap_GetConsoleFontSize( IN HANDLE hConsoleOutput, IN DWORD nFont )
+{
+    static FN_GetConsoleFontSize *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleFontSize", &g_Kernel32);
+    return pfn( hConsoleOutput, nFont );
+}
+
+typedef BOOL WINAPI FN_GetConsoleSelectionInfo( OUT PCONSOLE_SELECTION_INFO lpConsoleSelectionInfo );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetConsoleSelectionInfo( OUT PCONSOLE_SELECTION_INFO lpConsoleSelectionInfo )
+{
+    static FN_GetConsoleSelectionInfo *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleSelectionInfo", &g_Kernel32);
+    return pfn( lpConsoleSelectionInfo );
+}
+
+typedef BOOL WINAPI FN_GetNumberOfConsoleMouseButtons( OUT LPDWORD lpNumberOfMouseButtons );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetNumberOfConsoleMouseButtons( OUT LPDWORD lpNumberOfMouseButtons )
+{
+    static FN_GetNumberOfConsoleMouseButtons *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNumberOfConsoleMouseButtons", &g_Kernel32);
+    return pfn( lpNumberOfMouseButtons );
+}
+
+typedef BOOL WINAPI FN_SetConsoleMode( IN HANDLE hConsoleHandle, IN DWORD dwMode );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleMode( IN HANDLE hConsoleHandle, IN DWORD dwMode )
+{
+    static FN_SetConsoleMode *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleMode", &g_Kernel32);
+    return pfn( hConsoleHandle, dwMode );
+}
+
+typedef BOOL WINAPI FN_SetConsoleActiveScreenBuffer( IN HANDLE hConsoleOutput );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleActiveScreenBuffer( IN HANDLE hConsoleOutput )
+{
+    static FN_SetConsoleActiveScreenBuffer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleActiveScreenBuffer", &g_Kernel32);
+    return pfn( hConsoleOutput );
+}
+
+typedef BOOL WINAPI FN_FlushConsoleInputBuffer( IN HANDLE hConsoleInput );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FlushConsoleInputBuffer( IN HANDLE hConsoleInput )
+{
+    static FN_FlushConsoleInputBuffer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FlushConsoleInputBuffer", &g_Kernel32);
+    return pfn( hConsoleInput );
+}
+
+typedef BOOL WINAPI FN_SetConsoleScreenBufferSize( IN HANDLE hConsoleOutput, IN COORD dwSize );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleScreenBufferSize( IN HANDLE hConsoleOutput, IN COORD dwSize )
+{
+    static FN_SetConsoleScreenBufferSize *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleScreenBufferSize", &g_Kernel32);
+    return pfn( hConsoleOutput, dwSize );
+}
+
+typedef BOOL WINAPI FN_SetConsoleCursorPosition( IN HANDLE hConsoleOutput, IN COORD dwCursorPosition );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleCursorPosition( IN HANDLE hConsoleOutput, IN COORD dwCursorPosition )
+{
+    static FN_SetConsoleCursorPosition *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleCursorPosition", &g_Kernel32);
+    return pfn( hConsoleOutput, dwCursorPosition );
+}
+
+typedef BOOL WINAPI FN_SetConsoleCursorInfo( IN HANDLE hConsoleOutput, IN CONST CONSOLE_CURSOR_INFO * lpConsoleCursorInfo );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleCursorInfo( IN HANDLE hConsoleOutput, IN CONST CONSOLE_CURSOR_INFO * lpConsoleCursorInfo )
+{
+    static FN_SetConsoleCursorInfo *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleCursorInfo", &g_Kernel32);
+    return pfn( hConsoleOutput, lpConsoleCursorInfo );
+}
+
+typedef BOOL WINAPI FN_ScrollConsoleScreenBufferA( IN HANDLE hConsoleOutput, IN CONST SMALL_RECT * lpScrollRectangle, IN CONST SMALL_RECT * lpClipRectangle, IN COORD dwDestinationOrigin, IN CONST CHAR_INFO * lpFill );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ScrollConsoleScreenBufferA( IN HANDLE hConsoleOutput, IN CONST SMALL_RECT * lpScrollRectangle, IN CONST SMALL_RECT * lpClipRectangle, IN COORD dwDestinationOrigin, IN CONST CHAR_INFO * lpFill )
+{
+    static FN_ScrollConsoleScreenBufferA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ScrollConsoleScreenBufferA", &g_Kernel32);
+    return pfn( hConsoleOutput, lpScrollRectangle, lpClipRectangle, dwDestinationOrigin, lpFill );
+}
+
+typedef BOOL WINAPI FN_ScrollConsoleScreenBufferW( IN HANDLE hConsoleOutput, IN CONST SMALL_RECT * lpScrollRectangle, IN CONST SMALL_RECT * lpClipRectangle, IN COORD dwDestinationOrigin, IN CONST CHAR_INFO * lpFill );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ScrollConsoleScreenBufferW( IN HANDLE hConsoleOutput, IN CONST SMALL_RECT * lpScrollRectangle, IN CONST SMALL_RECT * lpClipRectangle, IN COORD dwDestinationOrigin, IN CONST CHAR_INFO * lpFill )
+{
+    static FN_ScrollConsoleScreenBufferW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ScrollConsoleScreenBufferW", &g_Kernel32);
+    return pfn( hConsoleOutput, lpScrollRectangle, lpClipRectangle, dwDestinationOrigin, lpFill );
+}
+
+typedef BOOL WINAPI FN_SetConsoleWindowInfo( IN HANDLE hConsoleOutput, IN BOOL bAbsolute, IN CONST SMALL_RECT * lpConsoleWindow );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleWindowInfo( IN HANDLE hConsoleOutput, IN BOOL bAbsolute, IN CONST SMALL_RECT * lpConsoleWindow )
+{
+    static FN_SetConsoleWindowInfo *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleWindowInfo", &g_Kernel32);
+    return pfn( hConsoleOutput, bAbsolute, lpConsoleWindow );
+}
+
+typedef BOOL WINAPI FN_SetConsoleTextAttribute( IN HANDLE hConsoleOutput, IN WORD wAttributes );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleTextAttribute( IN HANDLE hConsoleOutput, IN WORD wAttributes )
+{
+    static FN_SetConsoleTextAttribute *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleTextAttribute", &g_Kernel32);
+    return pfn( hConsoleOutput, wAttributes );
+}
+
+typedef BOOL WINAPI FN_SetConsoleCtrlHandler( IN PHANDLER_ROUTINE HandlerRoutine, IN BOOL Add );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleCtrlHandler( IN PHANDLER_ROUTINE HandlerRoutine, IN BOOL Add )
+{
+    static FN_SetConsoleCtrlHandler *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleCtrlHandler", &g_Kernel32);
+    return pfn( HandlerRoutine, Add );
+}
+
+typedef BOOL WINAPI FN_GenerateConsoleCtrlEvent( IN DWORD dwCtrlEvent, IN DWORD dwProcessGroupId );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GenerateConsoleCtrlEvent( IN DWORD dwCtrlEvent, IN DWORD dwProcessGroupId )
+{
+    static FN_GenerateConsoleCtrlEvent *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GenerateConsoleCtrlEvent", &g_Kernel32);
+    return pfn( dwCtrlEvent, dwProcessGroupId );
+}
+
+typedef BOOL WINAPI FN_AllocConsole( VOID );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AllocConsole( VOID )
+{
+    static FN_AllocConsole *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AllocConsole", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_FreeConsole( VOID );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_FreeConsole( VOID )
+{
+    static FN_FreeConsole *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FreeConsole", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_AttachConsole( IN DWORD dwProcessId );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_AttachConsole( IN DWORD dwProcessId )
+{
+    static FN_AttachConsole *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AttachConsole", &g_Kernel32);
+    return pfn( dwProcessId );
+}
+
+typedef DWORD WINAPI FN_GetConsoleTitleA( OUT LPSTR lpConsoleTitle, IN DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetConsoleTitleA( OUT LPSTR lpConsoleTitle, IN DWORD nSize )
+{
+    static FN_GetConsoleTitleA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleTitleA", &g_Kernel32);
+    return pfn( lpConsoleTitle, nSize );
+}
+
+typedef DWORD WINAPI FN_GetConsoleTitleW( OUT LPWSTR lpConsoleTitle, IN DWORD nSize );
+__declspec(dllexport) DWORD WINAPI kPrf2Wrap_GetConsoleTitleW( OUT LPWSTR lpConsoleTitle, IN DWORD nSize )
+{
+    static FN_GetConsoleTitleW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleTitleW", &g_Kernel32);
+    return pfn( lpConsoleTitle, nSize );
+}
+
+typedef BOOL WINAPI FN_SetConsoleTitleA( IN LPCSTR lpConsoleTitle );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleTitleA( IN LPCSTR lpConsoleTitle )
+{
+    static FN_SetConsoleTitleA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleTitleA", &g_Kernel32);
+    return pfn( lpConsoleTitle );
+}
+
+typedef BOOL WINAPI FN_SetConsoleTitleW( IN LPCWSTR lpConsoleTitle );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleTitleW( IN LPCWSTR lpConsoleTitle )
+{
+    static FN_SetConsoleTitleW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleTitleW", &g_Kernel32);
+    return pfn( lpConsoleTitle );
+}
+
+typedef BOOL WINAPI FN_ReadConsoleA( IN HANDLE hConsoleInput, OUT LPVOID lpBuffer, IN DWORD nNumberOfCharsToRead, OUT LPDWORD lpNumberOfCharsRead, IN LPVOID lpReserved );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadConsoleA( IN HANDLE hConsoleInput, OUT LPVOID lpBuffer, IN DWORD nNumberOfCharsToRead, OUT LPDWORD lpNumberOfCharsRead, IN LPVOID lpReserved )
+{
+    static FN_ReadConsoleA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadConsoleA", &g_Kernel32);
+    return pfn( hConsoleInput, lpBuffer, nNumberOfCharsToRead, lpNumberOfCharsRead, lpReserved );
+}
+
+typedef BOOL WINAPI FN_ReadConsoleW( IN HANDLE hConsoleInput, OUT LPVOID lpBuffer, IN DWORD nNumberOfCharsToRead, OUT LPDWORD lpNumberOfCharsRead, IN LPVOID lpReserved );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReadConsoleW( IN HANDLE hConsoleInput, OUT LPVOID lpBuffer, IN DWORD nNumberOfCharsToRead, OUT LPDWORD lpNumberOfCharsRead, IN LPVOID lpReserved )
+{
+    static FN_ReadConsoleW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReadConsoleW", &g_Kernel32);
+    return pfn( hConsoleInput, lpBuffer, nNumberOfCharsToRead, lpNumberOfCharsRead, lpReserved );
+}
+
+typedef BOOL WINAPI FN_WriteConsoleA( IN HANDLE hConsoleOutput, IN CONST VOID * lpBuffer, IN DWORD nNumberOfCharsToWrite, OUT LPDWORD lpNumberOfCharsWritten, IN LPVOID lpReserved );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteConsoleA( IN HANDLE hConsoleOutput, IN CONST VOID * lpBuffer, IN DWORD nNumberOfCharsToWrite, OUT LPDWORD lpNumberOfCharsWritten, IN LPVOID lpReserved )
+{
+    static FN_WriteConsoleA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteConsoleA", &g_Kernel32);
+    return pfn( hConsoleOutput, lpBuffer, nNumberOfCharsToWrite, lpNumberOfCharsWritten, lpReserved );
+}
+
+typedef BOOL WINAPI FN_WriteConsoleW( IN HANDLE hConsoleOutput, IN CONST VOID * lpBuffer, IN DWORD nNumberOfCharsToWrite, OUT LPDWORD lpNumberOfCharsWritten, IN LPVOID lpReserved );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_WriteConsoleW( IN HANDLE hConsoleOutput, IN CONST VOID * lpBuffer, IN DWORD nNumberOfCharsToWrite, OUT LPDWORD lpNumberOfCharsWritten, IN LPVOID lpReserved )
+{
+    static FN_WriteConsoleW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WriteConsoleW", &g_Kernel32);
+    return pfn( hConsoleOutput, lpBuffer, nNumberOfCharsToWrite, lpNumberOfCharsWritten, lpReserved );
+}
+
+typedef HANDLE WINAPI FN_CreateConsoleScreenBuffer( IN DWORD dwDesiredAccess, IN DWORD dwShareMode, IN CONST SECURITY_ATTRIBUTES * lpSecurityAttributes, IN DWORD dwFlags, IN LPVOID lpScreenBufferData );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateConsoleScreenBuffer( IN DWORD dwDesiredAccess, IN DWORD dwShareMode, IN CONST SECURITY_ATTRIBUTES * lpSecurityAttributes, IN DWORD dwFlags, IN LPVOID lpScreenBufferData )
+{
+    static FN_CreateConsoleScreenBuffer *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateConsoleScreenBuffer", &g_Kernel32);
+    return pfn( dwDesiredAccess, dwShareMode, lpSecurityAttributes, dwFlags, lpScreenBufferData );
+}
+
+typedef UINT WINAPI FN_GetConsoleCP( VOID );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetConsoleCP( VOID )
+{
+    static FN_GetConsoleCP *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleCP", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_SetConsoleCP( IN UINT wCodePageID );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleCP( IN UINT wCodePageID )
+{
+    static FN_SetConsoleCP *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleCP", &g_Kernel32);
+    return pfn( wCodePageID );
+}
+
+typedef UINT WINAPI FN_GetConsoleOutputCP( VOID );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetConsoleOutputCP( VOID )
+{
+    static FN_GetConsoleOutputCP *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleOutputCP", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_SetConsoleOutputCP( IN UINT wCodePageID );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleOutputCP( IN UINT wCodePageID )
+{
+    static FN_SetConsoleOutputCP *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleOutputCP", &g_Kernel32);
+    return pfn( wCodePageID );
+}
+
+typedef BOOL APIENTRY FN_GetConsoleDisplayMode( OUT LPDWORD lpModeFlags );
+__declspec(dllexport) BOOL APIENTRY kPrf2Wrap_GetConsoleDisplayMode( OUT LPDWORD lpModeFlags )
+{
+    static FN_GetConsoleDisplayMode *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleDisplayMode", &g_Kernel32);
+    return pfn( lpModeFlags );
+}
+
+typedef HWND APIENTRY FN_GetConsoleWindow( VOID );
+__declspec(dllexport) HWND APIENTRY kPrf2Wrap_GetConsoleWindow( VOID )
+{
+    static FN_GetConsoleWindow *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleWindow", &g_Kernel32);
+    return pfn ();
+}
+
+typedef DWORD APIENTRY FN_GetConsoleProcessList( OUT LPDWORD lpdwProcessList, IN DWORD dwProcessCount );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetConsoleProcessList( OUT LPDWORD lpdwProcessList, IN DWORD dwProcessCount )
+{
+    static FN_GetConsoleProcessList *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleProcessList", &g_Kernel32);
+    return pfn( lpdwProcessList, dwProcessCount );
+}
+
+typedef BOOL APIENTRY FN_AddConsoleAliasA( IN LPSTR Source, IN LPSTR Target, IN LPSTR ExeName );
+__declspec(dllexport) BOOL APIENTRY kPrf2Wrap_AddConsoleAliasA( IN LPSTR Source, IN LPSTR Target, IN LPSTR ExeName )
+{
+    static FN_AddConsoleAliasA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddConsoleAliasA", &g_Kernel32);
+    return pfn( Source, Target, ExeName );
+}
+
+typedef BOOL APIENTRY FN_AddConsoleAliasW( IN LPWSTR Source, IN LPWSTR Target, IN LPWSTR ExeName );
+__declspec(dllexport) BOOL APIENTRY kPrf2Wrap_AddConsoleAliasW( IN LPWSTR Source, IN LPWSTR Target, IN LPWSTR ExeName )
+{
+    static FN_AddConsoleAliasW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "AddConsoleAliasW", &g_Kernel32);
+    return pfn( Source, Target, ExeName );
+}
+
+typedef DWORD APIENTRY FN_GetConsoleAliasA( IN LPSTR Source, OUT LPSTR TargetBuffer, IN DWORD TargetBufferLength, IN LPSTR ExeName );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetConsoleAliasA( IN LPSTR Source, OUT LPSTR TargetBuffer, IN DWORD TargetBufferLength, IN LPSTR ExeName )
+{
+    static FN_GetConsoleAliasA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleAliasA", &g_Kernel32);
+    return pfn( Source, TargetBuffer, TargetBufferLength, ExeName );
+}
+
+typedef DWORD APIENTRY FN_GetConsoleAliasW( IN LPWSTR Source, OUT LPWSTR TargetBuffer, IN DWORD TargetBufferLength, IN LPWSTR ExeName );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetConsoleAliasW( IN LPWSTR Source, OUT LPWSTR TargetBuffer, IN DWORD TargetBufferLength, IN LPWSTR ExeName )
+{
+    static FN_GetConsoleAliasW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleAliasW", &g_Kernel32);
+    return pfn( Source, TargetBuffer, TargetBufferLength, ExeName );
+}
+
+typedef DWORD APIENTRY FN_GetConsoleAliasesLengthA( IN LPSTR ExeName );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetConsoleAliasesLengthA( IN LPSTR ExeName )
+{
+    static FN_GetConsoleAliasesLengthA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleAliasesLengthA", &g_Kernel32);
+    return pfn( ExeName );
+}
+
+typedef DWORD APIENTRY FN_GetConsoleAliasesLengthW( IN LPWSTR ExeName );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetConsoleAliasesLengthW( IN LPWSTR ExeName )
+{
+    static FN_GetConsoleAliasesLengthW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleAliasesLengthW", &g_Kernel32);
+    return pfn( ExeName );
+}
+
+typedef DWORD APIENTRY FN_GetConsoleAliasExesLengthA( VOID );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetConsoleAliasExesLengthA( VOID )
+{
+    static FN_GetConsoleAliasExesLengthA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleAliasExesLengthA", &g_Kernel32);
+    return pfn ();
+}
+
+typedef DWORD APIENTRY FN_GetConsoleAliasExesLengthW( VOID );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetConsoleAliasExesLengthW( VOID )
+{
+    static FN_GetConsoleAliasExesLengthW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleAliasExesLengthW", &g_Kernel32);
+    return pfn ();
+}
+
+typedef DWORD APIENTRY FN_GetConsoleAliasesA( OUT LPSTR AliasBuffer, IN DWORD AliasBufferLength, IN LPSTR ExeName );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetConsoleAliasesA( OUT LPSTR AliasBuffer, IN DWORD AliasBufferLength, IN LPSTR ExeName )
+{
+    static FN_GetConsoleAliasesA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleAliasesA", &g_Kernel32);
+    return pfn( AliasBuffer, AliasBufferLength, ExeName );
+}
+
+typedef DWORD APIENTRY FN_GetConsoleAliasesW( OUT LPWSTR AliasBuffer, IN DWORD AliasBufferLength, IN LPWSTR ExeName );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetConsoleAliasesW( OUT LPWSTR AliasBuffer, IN DWORD AliasBufferLength, IN LPWSTR ExeName )
+{
+    static FN_GetConsoleAliasesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleAliasesW", &g_Kernel32);
+    return pfn( AliasBuffer, AliasBufferLength, ExeName );
+}
+
+typedef DWORD APIENTRY FN_GetConsoleAliasExesA( OUT LPSTR ExeNameBuffer, IN DWORD ExeNameBufferLength );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetConsoleAliasExesA( OUT LPSTR ExeNameBuffer, IN DWORD ExeNameBufferLength )
+{
+    static FN_GetConsoleAliasExesA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleAliasExesA", &g_Kernel32);
+    return pfn( ExeNameBuffer, ExeNameBufferLength );
+}
+
+typedef DWORD APIENTRY FN_GetConsoleAliasExesW( OUT LPWSTR ExeNameBuffer, IN DWORD ExeNameBufferLength );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetConsoleAliasExesW( OUT LPWSTR ExeNameBuffer, IN DWORD ExeNameBufferLength )
+{
+    static FN_GetConsoleAliasExesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetConsoleAliasExesW", &g_Kernel32);
+    return pfn( ExeNameBuffer, ExeNameBufferLength );
+}
+
+typedef BOOL WINAPI FN_IsValidCodePage( UINT CodePage );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsValidCodePage( UINT CodePage )
+{
+    static FN_IsValidCodePage *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsValidCodePage", &g_Kernel32);
+    return pfn( CodePage );
+}
+
+typedef UINT WINAPI FN_GetACP( void );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetACP( void )
+{
+    static FN_GetACP *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetACP", &g_Kernel32);
+    return pfn ();
+}
+
+typedef UINT WINAPI FN_GetOEMCP( void );
+__declspec(dllexport) UINT WINAPI kPrf2Wrap_GetOEMCP( void )
+{
+    static FN_GetOEMCP *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetOEMCP", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_GetCPInfo( UINT CodePage, LPCPINFO lpCPInfo );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCPInfo( UINT CodePage, LPCPINFO lpCPInfo )
+{
+    static FN_GetCPInfo *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCPInfo", &g_Kernel32);
+    return pfn( CodePage, lpCPInfo );
+}
+
+typedef BOOL WINAPI FN_GetCPInfoExA( UINT CodePage, DWORD dwFlags, LPCPINFOEXA lpCPInfoEx );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCPInfoExA( UINT CodePage, DWORD dwFlags, LPCPINFOEXA lpCPInfoEx )
+{
+    static FN_GetCPInfoExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCPInfoExA", &g_Kernel32);
+    return pfn( CodePage, dwFlags, lpCPInfoEx );
+}
+
+typedef BOOL WINAPI FN_GetCPInfoExW( UINT CodePage, DWORD dwFlags, LPCPINFOEXW lpCPInfoEx );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetCPInfoExW( UINT CodePage, DWORD dwFlags, LPCPINFOEXW lpCPInfoEx )
+{
+    static FN_GetCPInfoExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCPInfoExW", &g_Kernel32);
+    return pfn( CodePage, dwFlags, lpCPInfoEx );
+}
+
+typedef BOOL WINAPI FN_IsDBCSLeadByte( BYTE TestChar );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsDBCSLeadByte( BYTE TestChar )
+{
+    static FN_IsDBCSLeadByte *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsDBCSLeadByte", &g_Kernel32);
+    return pfn( TestChar );
+}
+
+typedef BOOL WINAPI FN_IsDBCSLeadByteEx( UINT CodePage, BYTE TestChar );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsDBCSLeadByteEx( UINT CodePage, BYTE TestChar )
+{
+    static FN_IsDBCSLeadByteEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsDBCSLeadByteEx", &g_Kernel32);
+    return pfn( CodePage, TestChar );
+}
+
+typedef int WINAPI FN_MultiByteToWideChar( UINT CodePage, DWORD dwFlags, LPCSTR lpMultiByteStr, int cbMultiByte, LPWSTR lpWideCharStr, int cchWideChar );
+__declspec(dllexport) int WINAPI kPrf2Wrap_MultiByteToWideChar( UINT CodePage, DWORD dwFlags, LPCSTR lpMultiByteStr, int cbMultiByte, LPWSTR lpWideCharStr, int cchWideChar )
+{
+    static FN_MultiByteToWideChar *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "MultiByteToWideChar", &g_Kernel32);
+    return pfn( CodePage, dwFlags, lpMultiByteStr, cbMultiByte, lpWideCharStr, cchWideChar );
+}
+
+typedef int WINAPI FN_WideCharToMultiByte( UINT CodePage, DWORD dwFlags, LPCWSTR lpWideCharStr, int cchWideChar, LPSTR lpMultiByteStr, int cbMultiByte, LPCSTR lpDefaultChar, LPBOOL lpUsedDefaultChar );
+__declspec(dllexport) int WINAPI kPrf2Wrap_WideCharToMultiByte( UINT CodePage, DWORD dwFlags, LPCWSTR lpWideCharStr, int cchWideChar, LPSTR lpMultiByteStr, int cbMultiByte, LPCSTR lpDefaultChar, LPBOOL lpUsedDefaultChar )
+{
+    static FN_WideCharToMultiByte *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "WideCharToMultiByte", &g_Kernel32);
+    return pfn( CodePage, dwFlags, lpWideCharStr, cchWideChar, lpMultiByteStr, cbMultiByte, lpDefaultChar, lpUsedDefaultChar );
+}
+
+typedef int WINAPI FN_CompareStringA( LCID Locale, DWORD dwCmpFlags, LPCSTR lpString1, int cchCount1, LPCSTR lpString2, int cchCount2 );
+__declspec(dllexport) int WINAPI kPrf2Wrap_CompareStringA( LCID Locale, DWORD dwCmpFlags, LPCSTR lpString1, int cchCount1, LPCSTR lpString2, int cchCount2 )
+{
+    static FN_CompareStringA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CompareStringA", &g_Kernel32);
+    return pfn( Locale, dwCmpFlags, lpString1, cchCount1, lpString2, cchCount2 );
+}
+
+typedef int WINAPI FN_CompareStringW( LCID Locale, DWORD dwCmpFlags, LPCWSTR lpString1, int cchCount1, LPCWSTR lpString2, int cchCount2 );
+__declspec(dllexport) int WINAPI kPrf2Wrap_CompareStringW( LCID Locale, DWORD dwCmpFlags, LPCWSTR lpString1, int cchCount1, LPCWSTR lpString2, int cchCount2 )
+{
+    static FN_CompareStringW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CompareStringW", &g_Kernel32);
+    return pfn( Locale, dwCmpFlags, lpString1, cchCount1, lpString2, cchCount2 );
+}
+
+typedef int WINAPI FN_LCMapStringA( LCID Locale, DWORD dwMapFlags, LPCSTR lpSrcStr, int cchSrc, LPSTR lpDestStr, int cchDest );
+__declspec(dllexport) int WINAPI kPrf2Wrap_LCMapStringA( LCID Locale, DWORD dwMapFlags, LPCSTR lpSrcStr, int cchSrc, LPSTR lpDestStr, int cchDest )
+{
+    static FN_LCMapStringA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LCMapStringA", &g_Kernel32);
+    return pfn( Locale, dwMapFlags, lpSrcStr, cchSrc, lpDestStr, cchDest );
+}
+
+typedef int WINAPI FN_LCMapStringW( LCID Locale, DWORD dwMapFlags, LPCWSTR lpSrcStr, int cchSrc, LPWSTR lpDestStr, int cchDest );
+__declspec(dllexport) int WINAPI kPrf2Wrap_LCMapStringW( LCID Locale, DWORD dwMapFlags, LPCWSTR lpSrcStr, int cchSrc, LPWSTR lpDestStr, int cchDest )
+{
+    static FN_LCMapStringW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "LCMapStringW", &g_Kernel32);
+    return pfn( Locale, dwMapFlags, lpSrcStr, cchSrc, lpDestStr, cchDest );
+}
+
+typedef int WINAPI FN_GetLocaleInfoA( LCID Locale, LCTYPE LCType, LPSTR lpLCData, int cchData );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetLocaleInfoA( LCID Locale, LCTYPE LCType, LPSTR lpLCData, int cchData )
+{
+    static FN_GetLocaleInfoA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLocaleInfoA", &g_Kernel32);
+    return pfn( Locale, LCType, lpLCData, cchData );
+}
+
+typedef int WINAPI FN_GetLocaleInfoW( LCID Locale, LCTYPE LCType, LPWSTR lpLCData, int cchData );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetLocaleInfoW( LCID Locale, LCTYPE LCType, LPWSTR lpLCData, int cchData )
+{
+    static FN_GetLocaleInfoW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetLocaleInfoW", &g_Kernel32);
+    return pfn( Locale, LCType, lpLCData, cchData );
+}
+
+typedef BOOL WINAPI FN_SetLocaleInfoA( LCID Locale, LCTYPE LCType, LPCSTR lpLCData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetLocaleInfoA( LCID Locale, LCTYPE LCType, LPCSTR lpLCData )
+{
+    static FN_SetLocaleInfoA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetLocaleInfoA", &g_Kernel32);
+    return pfn( Locale, LCType, lpLCData );
+}
+
+typedef BOOL WINAPI FN_SetLocaleInfoW( LCID Locale, LCTYPE LCType, LPCWSTR lpLCData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetLocaleInfoW( LCID Locale, LCTYPE LCType, LPCWSTR lpLCData )
+{
+    static FN_SetLocaleInfoW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetLocaleInfoW", &g_Kernel32);
+    return pfn( Locale, LCType, lpLCData );
+}
+
+typedef int WINAPI FN_GetCalendarInfoA( LCID Locale, CALID Calendar, CALTYPE CalType, LPSTR lpCalData, int cchData, LPDWORD lpValue );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetCalendarInfoA( LCID Locale, CALID Calendar, CALTYPE CalType, LPSTR lpCalData, int cchData, LPDWORD lpValue )
+{
+    static FN_GetCalendarInfoA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCalendarInfoA", &g_Kernel32);
+    return pfn( Locale, Calendar, CalType, lpCalData, cchData, lpValue );
+}
+
+typedef int WINAPI FN_GetCalendarInfoW( LCID Locale, CALID Calendar, CALTYPE CalType, LPWSTR lpCalData, int cchData, LPDWORD lpValue );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetCalendarInfoW( LCID Locale, CALID Calendar, CALTYPE CalType, LPWSTR lpCalData, int cchData, LPDWORD lpValue )
+{
+    static FN_GetCalendarInfoW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCalendarInfoW", &g_Kernel32);
+    return pfn( Locale, Calendar, CalType, lpCalData, cchData, lpValue );
+}
+
+typedef BOOL WINAPI FN_SetCalendarInfoA( LCID Locale, CALID Calendar, CALTYPE CalType, LPCSTR lpCalData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetCalendarInfoA( LCID Locale, CALID Calendar, CALTYPE CalType, LPCSTR lpCalData )
+{
+    static FN_SetCalendarInfoA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetCalendarInfoA", &g_Kernel32);
+    return pfn( Locale, Calendar, CalType, lpCalData );
+}
+
+typedef BOOL WINAPI FN_SetCalendarInfoW( LCID Locale, CALID Calendar, CALTYPE CalType, LPCWSTR lpCalData );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetCalendarInfoW( LCID Locale, CALID Calendar, CALTYPE CalType, LPCWSTR lpCalData )
+{
+    static FN_SetCalendarInfoW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetCalendarInfoW", &g_Kernel32);
+    return pfn( Locale, Calendar, CalType, lpCalData );
+}
+
+typedef int WINAPI FN_GetTimeFormatA( LCID Locale, DWORD dwFlags, CONST SYSTEMTIME * lpTime, LPCSTR lpFormat, LPSTR lpTimeStr, int cchTime );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetTimeFormatA( LCID Locale, DWORD dwFlags, CONST SYSTEMTIME * lpTime, LPCSTR lpFormat, LPSTR lpTimeStr, int cchTime )
+{
+    static FN_GetTimeFormatA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetTimeFormatA", &g_Kernel32);
+    return pfn( Locale, dwFlags, lpTime, lpFormat, lpTimeStr, cchTime );
+}
+
+typedef int WINAPI FN_GetTimeFormatW( LCID Locale, DWORD dwFlags, CONST SYSTEMTIME * lpTime, LPCWSTR lpFormat, LPWSTR lpTimeStr, int cchTime );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetTimeFormatW( LCID Locale, DWORD dwFlags, CONST SYSTEMTIME * lpTime, LPCWSTR lpFormat, LPWSTR lpTimeStr, int cchTime )
+{
+    static FN_GetTimeFormatW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetTimeFormatW", &g_Kernel32);
+    return pfn( Locale, dwFlags, lpTime, lpFormat, lpTimeStr, cchTime );
+}
+
+typedef int WINAPI FN_GetDateFormatA( LCID Locale, DWORD dwFlags, CONST SYSTEMTIME * lpDate, LPCSTR lpFormat, LPSTR lpDateStr, int cchDate );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetDateFormatA( LCID Locale, DWORD dwFlags, CONST SYSTEMTIME * lpDate, LPCSTR lpFormat, LPSTR lpDateStr, int cchDate )
+{
+    static FN_GetDateFormatA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDateFormatA", &g_Kernel32);
+    return pfn( Locale, dwFlags, lpDate, lpFormat, lpDateStr, cchDate );
+}
+
+typedef int WINAPI FN_GetDateFormatW( LCID Locale, DWORD dwFlags, CONST SYSTEMTIME * lpDate, LPCWSTR lpFormat, LPWSTR lpDateStr, int cchDate );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetDateFormatW( LCID Locale, DWORD dwFlags, CONST SYSTEMTIME * lpDate, LPCWSTR lpFormat, LPWSTR lpDateStr, int cchDate )
+{
+    static FN_GetDateFormatW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetDateFormatW", &g_Kernel32);
+    return pfn( Locale, dwFlags, lpDate, lpFormat, lpDateStr, cchDate );
+}
+
+typedef int WINAPI FN_GetNumberFormatA( LCID Locale, DWORD dwFlags, LPCSTR lpValue, CONST NUMBERFMTA * lpFormat, LPSTR lpNumberStr, int cchNumber );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetNumberFormatA( LCID Locale, DWORD dwFlags, LPCSTR lpValue, CONST NUMBERFMTA * lpFormat, LPSTR lpNumberStr, int cchNumber )
+{
+    static FN_GetNumberFormatA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNumberFormatA", &g_Kernel32);
+    return pfn( Locale, dwFlags, lpValue, lpFormat, lpNumberStr, cchNumber );
+}
+
+typedef int WINAPI FN_GetNumberFormatW( LCID Locale, DWORD dwFlags, LPCWSTR lpValue, CONST NUMBERFMTW * lpFormat, LPWSTR lpNumberStr, int cchNumber );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetNumberFormatW( LCID Locale, DWORD dwFlags, LPCWSTR lpValue, CONST NUMBERFMTW * lpFormat, LPWSTR lpNumberStr, int cchNumber )
+{
+    static FN_GetNumberFormatW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNumberFormatW", &g_Kernel32);
+    return pfn( Locale, dwFlags, lpValue, lpFormat, lpNumberStr, cchNumber );
+}
+
+typedef int WINAPI FN_GetCurrencyFormatA( LCID Locale, DWORD dwFlags, LPCSTR lpValue, CONST CURRENCYFMTA * lpFormat, LPSTR lpCurrencyStr, int cchCurrency );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetCurrencyFormatA( LCID Locale, DWORD dwFlags, LPCSTR lpValue, CONST CURRENCYFMTA * lpFormat, LPSTR lpCurrencyStr, int cchCurrency )
+{
+    static FN_GetCurrencyFormatA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrencyFormatA", &g_Kernel32);
+    return pfn( Locale, dwFlags, lpValue, lpFormat, lpCurrencyStr, cchCurrency );
+}
+
+typedef int WINAPI FN_GetCurrencyFormatW( LCID Locale, DWORD dwFlags, LPCWSTR lpValue, CONST CURRENCYFMTW * lpFormat, LPWSTR lpCurrencyStr, int cchCurrency );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetCurrencyFormatW( LCID Locale, DWORD dwFlags, LPCWSTR lpValue, CONST CURRENCYFMTW * lpFormat, LPWSTR lpCurrencyStr, int cchCurrency )
+{
+    static FN_GetCurrencyFormatW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetCurrencyFormatW", &g_Kernel32);
+    return pfn( Locale, dwFlags, lpValue, lpFormat, lpCurrencyStr, cchCurrency );
+}
+
+typedef BOOL WINAPI FN_EnumCalendarInfoA( CALINFO_ENUMPROCA lpCalInfoEnumProc, LCID Locale, CALID Calendar, CALTYPE CalType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumCalendarInfoA( CALINFO_ENUMPROCA lpCalInfoEnumProc, LCID Locale, CALID Calendar, CALTYPE CalType )
+{
+    static FN_EnumCalendarInfoA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumCalendarInfoA", &g_Kernel32);
+    return pfn( lpCalInfoEnumProc, Locale, Calendar, CalType );
+}
+
+typedef BOOL WINAPI FN_EnumCalendarInfoW( CALINFO_ENUMPROCW lpCalInfoEnumProc, LCID Locale, CALID Calendar, CALTYPE CalType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumCalendarInfoW( CALINFO_ENUMPROCW lpCalInfoEnumProc, LCID Locale, CALID Calendar, CALTYPE CalType )
+{
+    static FN_EnumCalendarInfoW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumCalendarInfoW", &g_Kernel32);
+    return pfn( lpCalInfoEnumProc, Locale, Calendar, CalType );
+}
+
+typedef BOOL WINAPI FN_EnumCalendarInfoExA( CALINFO_ENUMPROCEXA lpCalInfoEnumProcEx, LCID Locale, CALID Calendar, CALTYPE CalType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumCalendarInfoExA( CALINFO_ENUMPROCEXA lpCalInfoEnumProcEx, LCID Locale, CALID Calendar, CALTYPE CalType )
+{
+    static FN_EnumCalendarInfoExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumCalendarInfoExA", &g_Kernel32);
+    return pfn( lpCalInfoEnumProcEx, Locale, Calendar, CalType );
+}
+
+typedef BOOL WINAPI FN_EnumCalendarInfoExW( CALINFO_ENUMPROCEXW lpCalInfoEnumProcEx, LCID Locale, CALID Calendar, CALTYPE CalType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumCalendarInfoExW( CALINFO_ENUMPROCEXW lpCalInfoEnumProcEx, LCID Locale, CALID Calendar, CALTYPE CalType )
+{
+    static FN_EnumCalendarInfoExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumCalendarInfoExW", &g_Kernel32);
+    return pfn( lpCalInfoEnumProcEx, Locale, Calendar, CalType );
+}
+
+typedef BOOL WINAPI FN_EnumTimeFormatsA( TIMEFMT_ENUMPROCA lpTimeFmtEnumProc, LCID Locale, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumTimeFormatsA( TIMEFMT_ENUMPROCA lpTimeFmtEnumProc, LCID Locale, DWORD dwFlags )
+{
+    static FN_EnumTimeFormatsA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumTimeFormatsA", &g_Kernel32);
+    return pfn( lpTimeFmtEnumProc, Locale, dwFlags );
+}
+
+typedef BOOL WINAPI FN_EnumTimeFormatsW( TIMEFMT_ENUMPROCW lpTimeFmtEnumProc, LCID Locale, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumTimeFormatsW( TIMEFMT_ENUMPROCW lpTimeFmtEnumProc, LCID Locale, DWORD dwFlags )
+{
+    static FN_EnumTimeFormatsW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumTimeFormatsW", &g_Kernel32);
+    return pfn( lpTimeFmtEnumProc, Locale, dwFlags );
+}
+
+typedef BOOL WINAPI FN_EnumDateFormatsA( DATEFMT_ENUMPROCA lpDateFmtEnumProc, LCID Locale, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumDateFormatsA( DATEFMT_ENUMPROCA lpDateFmtEnumProc, LCID Locale, DWORD dwFlags )
+{
+    static FN_EnumDateFormatsA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumDateFormatsA", &g_Kernel32);
+    return pfn( lpDateFmtEnumProc, Locale, dwFlags );
+}
+
+typedef BOOL WINAPI FN_EnumDateFormatsW( DATEFMT_ENUMPROCW lpDateFmtEnumProc, LCID Locale, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumDateFormatsW( DATEFMT_ENUMPROCW lpDateFmtEnumProc, LCID Locale, DWORD dwFlags )
+{
+    static FN_EnumDateFormatsW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumDateFormatsW", &g_Kernel32);
+    return pfn( lpDateFmtEnumProc, Locale, dwFlags );
+}
+
+typedef BOOL WINAPI FN_EnumDateFormatsExA( DATEFMT_ENUMPROCEXA lpDateFmtEnumProcEx, LCID Locale, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumDateFormatsExA( DATEFMT_ENUMPROCEXA lpDateFmtEnumProcEx, LCID Locale, DWORD dwFlags )
+{
+    static FN_EnumDateFormatsExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumDateFormatsExA", &g_Kernel32);
+    return pfn( lpDateFmtEnumProcEx, Locale, dwFlags );
+}
+
+typedef BOOL WINAPI FN_EnumDateFormatsExW( DATEFMT_ENUMPROCEXW lpDateFmtEnumProcEx, LCID Locale, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumDateFormatsExW( DATEFMT_ENUMPROCEXW lpDateFmtEnumProcEx, LCID Locale, DWORD dwFlags )
+{
+    static FN_EnumDateFormatsExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumDateFormatsExW", &g_Kernel32);
+    return pfn( lpDateFmtEnumProcEx, Locale, dwFlags );
+}
+
+typedef BOOL WINAPI FN_IsValidLanguageGroup( LGRPID LanguageGroup, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsValidLanguageGroup( LGRPID LanguageGroup, DWORD dwFlags )
+{
+    static FN_IsValidLanguageGroup *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsValidLanguageGroup", &g_Kernel32);
+    return pfn( LanguageGroup, dwFlags );
+}
+
+typedef BOOL WINAPI FN_GetNLSVersion( NLS_FUNCTION Function, LCID Locale, LPNLSVERSIONINFO lpVersionInformation );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetNLSVersion( NLS_FUNCTION Function, LCID Locale, LPNLSVERSIONINFO lpVersionInformation )
+{
+    static FN_GetNLSVersion *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetNLSVersion", &g_Kernel32);
+    return pfn( Function, Locale, lpVersionInformation );
+}
+
+typedef BOOL WINAPI FN_IsNLSDefinedString( NLS_FUNCTION Function, DWORD dwFlags, LPNLSVERSIONINFO lpVersionInformation, LPCWSTR lpString, INT cchStr );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsNLSDefinedString( NLS_FUNCTION Function, DWORD dwFlags, LPNLSVERSIONINFO lpVersionInformation, LPCWSTR lpString, INT cchStr )
+{
+    static FN_IsNLSDefinedString *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsNLSDefinedString", &g_Kernel32);
+    return pfn( Function, dwFlags, lpVersionInformation, lpString, cchStr );
+}
+
+typedef BOOL WINAPI FN_IsValidLocale( LCID Locale, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_IsValidLocale( LCID Locale, DWORD dwFlags )
+{
+    static FN_IsValidLocale *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "IsValidLocale", &g_Kernel32);
+    return pfn( Locale, dwFlags );
+}
+
+typedef int WINAPI FN_GetGeoInfoA( GEOID Location, GEOTYPE GeoType, LPSTR lpGeoData, int cchData, LANGID LangId );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetGeoInfoA( GEOID Location, GEOTYPE GeoType, LPSTR lpGeoData, int cchData, LANGID LangId )
+{
+    static FN_GetGeoInfoA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetGeoInfoA", &g_Kernel32);
+    return pfn( Location, GeoType, lpGeoData, cchData, LangId );
+}
+
+typedef int WINAPI FN_GetGeoInfoW( GEOID Location, GEOTYPE GeoType, LPWSTR lpGeoData, int cchData, LANGID LangId );
+__declspec(dllexport) int WINAPI kPrf2Wrap_GetGeoInfoW( GEOID Location, GEOTYPE GeoType, LPWSTR lpGeoData, int cchData, LANGID LangId )
+{
+    static FN_GetGeoInfoW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetGeoInfoW", &g_Kernel32);
+    return pfn( Location, GeoType, lpGeoData, cchData, LangId );
+}
+
+typedef BOOL WINAPI FN_EnumSystemGeoID( GEOCLASS GeoClass, GEOID ParentGeoId, GEO_ENUMPROC lpGeoEnumProc );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumSystemGeoID( GEOCLASS GeoClass, GEOID ParentGeoId, GEO_ENUMPROC lpGeoEnumProc )
+{
+    static FN_EnumSystemGeoID *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumSystemGeoID", &g_Kernel32);
+    return pfn( GeoClass, ParentGeoId, lpGeoEnumProc );
+}
+
+typedef GEOID WINAPI FN_GetUserGeoID( GEOCLASS GeoClass );
+__declspec(dllexport) GEOID WINAPI kPrf2Wrap_GetUserGeoID( GEOCLASS GeoClass )
+{
+    static FN_GetUserGeoID *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetUserGeoID", &g_Kernel32);
+    return pfn( GeoClass );
+}
+
+typedef BOOL WINAPI FN_SetUserGeoID( GEOID GeoId );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetUserGeoID( GEOID GeoId )
+{
+    static FN_SetUserGeoID *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetUserGeoID", &g_Kernel32);
+    return pfn( GeoId );
+}
+
+typedef LCID WINAPI FN_ConvertDefaultLocale( LCID Locale );
+__declspec(dllexport) LCID WINAPI kPrf2Wrap_ConvertDefaultLocale( LCID Locale )
+{
+    static FN_ConvertDefaultLocale *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ConvertDefaultLocale", &g_Kernel32);
+    return pfn( Locale );
+}
+
+typedef LCID WINAPI FN_GetThreadLocale( void );
+__declspec(dllexport) LCID WINAPI kPrf2Wrap_GetThreadLocale( void )
+{
+    static FN_GetThreadLocale *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetThreadLocale", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_SetThreadLocale( LCID Locale );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetThreadLocale( LCID Locale )
+{
+    static FN_SetThreadLocale *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetThreadLocale", &g_Kernel32);
+    return pfn( Locale );
+}
+
+typedef LANGID WINAPI FN_GetSystemDefaultUILanguage( void );
+__declspec(dllexport) LANGID WINAPI kPrf2Wrap_GetSystemDefaultUILanguage( void )
+{
+    static FN_GetSystemDefaultUILanguage *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemDefaultUILanguage", &g_Kernel32);
+    return pfn ();
+}
+
+typedef LANGID WINAPI FN_GetUserDefaultUILanguage( void );
+__declspec(dllexport) LANGID WINAPI kPrf2Wrap_GetUserDefaultUILanguage( void )
+{
+    static FN_GetUserDefaultUILanguage *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetUserDefaultUILanguage", &g_Kernel32);
+    return pfn ();
+}
+
+typedef LANGID WINAPI FN_GetSystemDefaultLangID( void );
+__declspec(dllexport) LANGID WINAPI kPrf2Wrap_GetSystemDefaultLangID( void )
+{
+    static FN_GetSystemDefaultLangID *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemDefaultLangID", &g_Kernel32);
+    return pfn ();
+}
+
+typedef LANGID WINAPI FN_GetUserDefaultLangID( void );
+__declspec(dllexport) LANGID WINAPI kPrf2Wrap_GetUserDefaultLangID( void )
+{
+    static FN_GetUserDefaultLangID *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetUserDefaultLangID", &g_Kernel32);
+    return pfn ();
+}
+
+typedef LCID WINAPI FN_GetSystemDefaultLCID( void );
+__declspec(dllexport) LCID WINAPI kPrf2Wrap_GetSystemDefaultLCID( void )
+{
+    static FN_GetSystemDefaultLCID *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetSystemDefaultLCID", &g_Kernel32);
+    return pfn ();
+}
+
+typedef LCID WINAPI FN_GetUserDefaultLCID( void );
+__declspec(dllexport) LCID WINAPI kPrf2Wrap_GetUserDefaultLCID( void )
+{
+    static FN_GetUserDefaultLCID *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetUserDefaultLCID", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_GetStringTypeExA( LCID Locale, DWORD dwInfoType, LPCSTR lpSrcStr, int cchSrc, LPWORD lpCharType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetStringTypeExA( LCID Locale, DWORD dwInfoType, LPCSTR lpSrcStr, int cchSrc, LPWORD lpCharType )
+{
+    static FN_GetStringTypeExA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetStringTypeExA", &g_Kernel32);
+    return pfn( Locale, dwInfoType, lpSrcStr, cchSrc, lpCharType );
+}
+
+typedef BOOL WINAPI FN_GetStringTypeExW( LCID Locale, DWORD dwInfoType, LPCWSTR lpSrcStr, int cchSrc, LPWORD lpCharType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetStringTypeExW( LCID Locale, DWORD dwInfoType, LPCWSTR lpSrcStr, int cchSrc, LPWORD lpCharType )
+{
+    static FN_GetStringTypeExW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetStringTypeExW", &g_Kernel32);
+    return pfn( Locale, dwInfoType, lpSrcStr, cchSrc, lpCharType );
+}
+
+typedef BOOL WINAPI FN_GetStringTypeA( LCID Locale, DWORD dwInfoType, LPCSTR lpSrcStr, int cchSrc, LPWORD lpCharType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetStringTypeA( LCID Locale, DWORD dwInfoType, LPCSTR lpSrcStr, int cchSrc, LPWORD lpCharType )
+{
+    static FN_GetStringTypeA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetStringTypeA", &g_Kernel32);
+    return pfn( Locale, dwInfoType, lpSrcStr, cchSrc, lpCharType );
+}
+
+typedef BOOL WINAPI FN_GetStringTypeW( DWORD dwInfoType, LPCWSTR lpSrcStr, int cchSrc, LPWORD lpCharType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetStringTypeW( DWORD dwInfoType, LPCWSTR lpSrcStr, int cchSrc, LPWORD lpCharType )
+{
+    static FN_GetStringTypeW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetStringTypeW", &g_Kernel32);
+    return pfn( dwInfoType, lpSrcStr, cchSrc, lpCharType );
+}
+
+typedef int WINAPI FN_FoldStringA( DWORD dwMapFlags, LPCSTR lpSrcStr, int cchSrc, LPSTR lpDestStr, int cchDest );
+__declspec(dllexport) int WINAPI kPrf2Wrap_FoldStringA( DWORD dwMapFlags, LPCSTR lpSrcStr, int cchSrc, LPSTR lpDestStr, int cchDest )
+{
+    static FN_FoldStringA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FoldStringA", &g_Kernel32);
+    return pfn( dwMapFlags, lpSrcStr, cchSrc, lpDestStr, cchDest );
+}
+
+typedef int WINAPI FN_FoldStringW( DWORD dwMapFlags, LPCWSTR lpSrcStr, int cchSrc, LPWSTR lpDestStr, int cchDest );
+__declspec(dllexport) int WINAPI kPrf2Wrap_FoldStringW( DWORD dwMapFlags, LPCWSTR lpSrcStr, int cchSrc, LPWSTR lpDestStr, int cchDest )
+{
+    static FN_FoldStringW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "FoldStringW", &g_Kernel32);
+    return pfn( dwMapFlags, lpSrcStr, cchSrc, lpDestStr, cchDest );
+}
+
+typedef BOOL WINAPI FN_EnumSystemLanguageGroupsA( LANGUAGEGROUP_ENUMPROCA lpLanguageGroupEnumProc, DWORD dwFlags, LONG_PTR lParam );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumSystemLanguageGroupsA( LANGUAGEGROUP_ENUMPROCA lpLanguageGroupEnumProc, DWORD dwFlags, LONG_PTR lParam )
+{
+    static FN_EnumSystemLanguageGroupsA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumSystemLanguageGroupsA", &g_Kernel32);
+    return pfn( lpLanguageGroupEnumProc, dwFlags, lParam );
+}
+
+typedef BOOL WINAPI FN_EnumSystemLanguageGroupsW( LANGUAGEGROUP_ENUMPROCW lpLanguageGroupEnumProc, DWORD dwFlags, LONG_PTR lParam );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumSystemLanguageGroupsW( LANGUAGEGROUP_ENUMPROCW lpLanguageGroupEnumProc, DWORD dwFlags, LONG_PTR lParam )
+{
+    static FN_EnumSystemLanguageGroupsW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumSystemLanguageGroupsW", &g_Kernel32);
+    return pfn( lpLanguageGroupEnumProc, dwFlags, lParam );
+}
+
+typedef BOOL WINAPI FN_EnumLanguageGroupLocalesA( LANGGROUPLOCALE_ENUMPROCA lpLangGroupLocaleEnumProc, LGRPID LanguageGroup, DWORD dwFlags, LONG_PTR lParam );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumLanguageGroupLocalesA( LANGGROUPLOCALE_ENUMPROCA lpLangGroupLocaleEnumProc, LGRPID LanguageGroup, DWORD dwFlags, LONG_PTR lParam )
+{
+    static FN_EnumLanguageGroupLocalesA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumLanguageGroupLocalesA", &g_Kernel32);
+    return pfn( lpLangGroupLocaleEnumProc, LanguageGroup, dwFlags, lParam );
+}
+
+typedef BOOL WINAPI FN_EnumLanguageGroupLocalesW( LANGGROUPLOCALE_ENUMPROCW lpLangGroupLocaleEnumProc, LGRPID LanguageGroup, DWORD dwFlags, LONG_PTR lParam );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumLanguageGroupLocalesW( LANGGROUPLOCALE_ENUMPROCW lpLangGroupLocaleEnumProc, LGRPID LanguageGroup, DWORD dwFlags, LONG_PTR lParam )
+{
+    static FN_EnumLanguageGroupLocalesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumLanguageGroupLocalesW", &g_Kernel32);
+    return pfn( lpLangGroupLocaleEnumProc, LanguageGroup, dwFlags, lParam );
+}
+
+typedef BOOL WINAPI FN_EnumUILanguagesA( UILANGUAGE_ENUMPROCA lpUILanguageEnumProc, DWORD dwFlags, LONG_PTR lParam );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumUILanguagesA( UILANGUAGE_ENUMPROCA lpUILanguageEnumProc, DWORD dwFlags, LONG_PTR lParam )
+{
+    static FN_EnumUILanguagesA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumUILanguagesA", &g_Kernel32);
+    return pfn( lpUILanguageEnumProc, dwFlags, lParam );
+}
+
+typedef BOOL WINAPI FN_EnumUILanguagesW( UILANGUAGE_ENUMPROCW lpUILanguageEnumProc, DWORD dwFlags, LONG_PTR lParam );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumUILanguagesW( UILANGUAGE_ENUMPROCW lpUILanguageEnumProc, DWORD dwFlags, LONG_PTR lParam )
+{
+    static FN_EnumUILanguagesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumUILanguagesW", &g_Kernel32);
+    return pfn( lpUILanguageEnumProc, dwFlags, lParam );
+}
+
+typedef BOOL WINAPI FN_EnumSystemLocalesA( LOCALE_ENUMPROCA lpLocaleEnumProc, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumSystemLocalesA( LOCALE_ENUMPROCA lpLocaleEnumProc, DWORD dwFlags )
+{
+    static FN_EnumSystemLocalesA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumSystemLocalesA", &g_Kernel32);
+    return pfn( lpLocaleEnumProc, dwFlags );
+}
+
+typedef BOOL WINAPI FN_EnumSystemLocalesW( LOCALE_ENUMPROCW lpLocaleEnumProc, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumSystemLocalesW( LOCALE_ENUMPROCW lpLocaleEnumProc, DWORD dwFlags )
+{
+    static FN_EnumSystemLocalesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumSystemLocalesW", &g_Kernel32);
+    return pfn( lpLocaleEnumProc, dwFlags );
+}
+
+typedef BOOL WINAPI FN_EnumSystemCodePagesA( CODEPAGE_ENUMPROCA lpCodePageEnumProc, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumSystemCodePagesA( CODEPAGE_ENUMPROCA lpCodePageEnumProc, DWORD dwFlags )
+{
+    static FN_EnumSystemCodePagesA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumSystemCodePagesA", &g_Kernel32);
+    return pfn( lpCodePageEnumProc, dwFlags );
+}
+
+typedef BOOL WINAPI FN_EnumSystemCodePagesW( CODEPAGE_ENUMPROCW lpCodePageEnumProc, DWORD dwFlags );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_EnumSystemCodePagesW( CODEPAGE_ENUMPROCW lpCodePageEnumProc, DWORD dwFlags )
+{
+    static FN_EnumSystemCodePagesW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "EnumSystemCodePagesW", &g_Kernel32);
+    return pfn( lpCodePageEnumProc, dwFlags );
+}
+
+typedef DWORD APIENTRY FN_VerFindFileA( DWORD uFlags, LPSTR szFileName, LPSTR szWinDir, LPSTR szAppDir, LPSTR szCurDir, PUINT lpuCurDirLen, LPSTR szDestDir, PUINT lpuDestDirLen );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_VerFindFileA( DWORD uFlags, LPSTR szFileName, LPSTR szWinDir, LPSTR szAppDir, LPSTR szCurDir, PUINT lpuCurDirLen, LPSTR szDestDir, PUINT lpuDestDirLen )
+{
+    static FN_VerFindFileA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VerFindFileA", &g_Kernel32);
+    return pfn( uFlags, szFileName, szWinDir, szAppDir, szCurDir, lpuCurDirLen, szDestDir, lpuDestDirLen );
+}
+
+typedef DWORD APIENTRY FN_VerFindFileW( DWORD uFlags, LPWSTR szFileName, LPWSTR szWinDir, LPWSTR szAppDir, LPWSTR szCurDir, PUINT lpuCurDirLen, LPWSTR szDestDir, PUINT lpuDestDirLen );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_VerFindFileW( DWORD uFlags, LPWSTR szFileName, LPWSTR szWinDir, LPWSTR szAppDir, LPWSTR szCurDir, PUINT lpuCurDirLen, LPWSTR szDestDir, PUINT lpuDestDirLen )
+{
+    static FN_VerFindFileW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VerFindFileW", &g_Kernel32);
+    return pfn( uFlags, szFileName, szWinDir, szAppDir, szCurDir, lpuCurDirLen, szDestDir, lpuDestDirLen );
+}
+
+typedef DWORD APIENTRY FN_VerInstallFileA( DWORD uFlags, LPSTR szSrcFileName, LPSTR szDestFileName, LPSTR szSrcDir, LPSTR szDestDir, LPSTR szCurDir, LPSTR szTmpFile, PUINT lpuTmpFileLen );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_VerInstallFileA( DWORD uFlags, LPSTR szSrcFileName, LPSTR szDestFileName, LPSTR szSrcDir, LPSTR szDestDir, LPSTR szCurDir, LPSTR szTmpFile, PUINT lpuTmpFileLen )
+{
+    static FN_VerInstallFileA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VerInstallFileA", &g_Kernel32);
+    return pfn( uFlags, szSrcFileName, szDestFileName, szSrcDir, szDestDir, szCurDir, szTmpFile, lpuTmpFileLen );
+}
+
+typedef DWORD APIENTRY FN_VerInstallFileW( DWORD uFlags, LPWSTR szSrcFileName, LPWSTR szDestFileName, LPWSTR szSrcDir, LPWSTR szDestDir, LPWSTR szCurDir, LPWSTR szTmpFile, PUINT lpuTmpFileLen );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_VerInstallFileW( DWORD uFlags, LPWSTR szSrcFileName, LPWSTR szDestFileName, LPWSTR szSrcDir, LPWSTR szDestDir, LPWSTR szCurDir, LPWSTR szTmpFile, PUINT lpuTmpFileLen )
+{
+    static FN_VerInstallFileW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VerInstallFileW", &g_Kernel32);
+    return pfn( uFlags, szSrcFileName, szDestFileName, szSrcDir, szDestDir, szCurDir, szTmpFile, lpuTmpFileLen );
+}
+
+typedef DWORD APIENTRY FN_GetFileVersionInfoSizeA( LPCSTR lptstrFilename, LPDWORD lpdwHandle );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetFileVersionInfoSizeA( LPCSTR lptstrFilename, LPDWORD lpdwHandle )
+{
+    static FN_GetFileVersionInfoSizeA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileVersionInfoSizeA", &g_Kernel32);
+    return pfn( lptstrFilename, lpdwHandle );
+}
+
+typedef DWORD APIENTRY FN_GetFileVersionInfoSizeW( LPCWSTR lptstrFilename, LPDWORD lpdwHandle );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_GetFileVersionInfoSizeW( LPCWSTR lptstrFilename, LPDWORD lpdwHandle )
+{
+    static FN_GetFileVersionInfoSizeW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileVersionInfoSizeW", &g_Kernel32);
+    return pfn( lptstrFilename, lpdwHandle );
+}
+
+typedef BOOL APIENTRY FN_GetFileVersionInfoA( LPCSTR lptstrFilename, DWORD dwHandle, DWORD dwLen, LPVOID lpData );
+__declspec(dllexport) BOOL APIENTRY kPrf2Wrap_GetFileVersionInfoA( LPCSTR lptstrFilename, DWORD dwHandle, DWORD dwLen, LPVOID lpData )
+{
+    static FN_GetFileVersionInfoA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileVersionInfoA", &g_Kernel32);
+    return pfn( lptstrFilename, dwHandle, dwLen, lpData );
+}
+
+typedef BOOL APIENTRY FN_GetFileVersionInfoW( LPCWSTR lptstrFilename, DWORD dwHandle, DWORD dwLen, LPVOID lpData );
+__declspec(dllexport) BOOL APIENTRY kPrf2Wrap_GetFileVersionInfoW( LPCWSTR lptstrFilename, DWORD dwHandle, DWORD dwLen, LPVOID lpData )
+{
+    static FN_GetFileVersionInfoW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetFileVersionInfoW", &g_Kernel32);
+    return pfn( lptstrFilename, dwHandle, dwLen, lpData );
+}
+
+typedef DWORD APIENTRY FN_VerLanguageNameA( DWORD wLang, LPSTR szLang, DWORD nSize );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_VerLanguageNameA( DWORD wLang, LPSTR szLang, DWORD nSize )
+{
+    static FN_VerLanguageNameA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VerLanguageNameA", &g_Kernel32);
+    return pfn( wLang, szLang, nSize );
+}
+
+typedef DWORD APIENTRY FN_VerLanguageNameW( DWORD wLang, LPWSTR szLang, DWORD nSize );
+__declspec(dllexport) DWORD APIENTRY kPrf2Wrap_VerLanguageNameW( DWORD wLang, LPWSTR szLang, DWORD nSize )
+{
+    static FN_VerLanguageNameW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VerLanguageNameW", &g_Kernel32);
+    return pfn( wLang, szLang, nSize );
+}
+
+typedef BOOL APIENTRY FN_VerQueryValueA( const LPVOID pBlock, LPSTR lpSubBlock, LPVOID * lplpBuffer, PUINT puLen );
+__declspec(dllexport) BOOL APIENTRY kPrf2Wrap_VerQueryValueA( const LPVOID pBlock, LPSTR lpSubBlock, LPVOID * lplpBuffer, PUINT puLen )
+{
+    static FN_VerQueryValueA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VerQueryValueA", &g_Kernel32);
+    return pfn( pBlock, lpSubBlock, lplpBuffer, puLen );
+}
+
+typedef BOOL APIENTRY FN_VerQueryValueW( const LPVOID pBlock, LPWSTR lpSubBlock, LPVOID * lplpBuffer, PUINT puLen );
+__declspec(dllexport) BOOL APIENTRY kPrf2Wrap_VerQueryValueW( const LPVOID pBlock, LPWSTR lpSubBlock, LPVOID * lplpBuffer, PUINT puLen )
+{
+    static FN_VerQueryValueW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VerQueryValueW", &g_Kernel32);
+    return pfn( pBlock, lpSubBlock, lplpBuffer, puLen );
+}
+
+typedef VOID __cdecl FN_RtlRestoreContext( IN PCONTEXT ContextRecord, IN struct _EXCEPTION_RECORD * ExceptionRecord );
+__declspec(dllexport) VOID __cdecl kPrf2Wrap_RtlRestoreContext( IN PCONTEXT ContextRecord, IN struct _EXCEPTION_RECORD * ExceptionRecord )
+{
+    static FN_RtlRestoreContext *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlRestoreContext", &g_Kernel32);
+    pfn( ContextRecord, ExceptionRecord );
+}
+
+typedef BOOLEAN __cdecl FN_RtlAddFunctionTable( IN PRUNTIME_FUNCTION FunctionTable, IN DWORD EntryCount, IN DWORD64 BaseAddress );
+__declspec(dllexport) BOOLEAN __cdecl kPrf2Wrap_RtlAddFunctionTable( IN PRUNTIME_FUNCTION FunctionTable, IN DWORD EntryCount, IN DWORD64 BaseAddress )
+{
+    static FN_RtlAddFunctionTable *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlAddFunctionTable", &g_Kernel32);
+    return pfn( FunctionTable, EntryCount, BaseAddress );
+}
+
+typedef BOOLEAN __cdecl FN_RtlInstallFunctionTableCallback( IN DWORD64 TableIdentifier, IN DWORD64 BaseAddress, IN DWORD Length, IN PGET_RUNTIME_FUNCTION_CALLBACK Callback, IN PVOID Context, IN PCWSTR OutOfProcessCallbackDll );
+__declspec(dllexport) BOOLEAN __cdecl kPrf2Wrap_RtlInstallFunctionTableCallback( IN DWORD64 TableIdentifier, IN DWORD64 BaseAddress, IN DWORD Length, IN PGET_RUNTIME_FUNCTION_CALLBACK Callback, IN PVOID Context, IN PCWSTR OutOfProcessCallbackDll )
+{
+    static FN_RtlInstallFunctionTableCallback *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlInstallFunctionTableCallback", &g_Kernel32);
+    return pfn( TableIdentifier, BaseAddress, Length, Callback, Context, OutOfProcessCallbackDll );
+}
+
+typedef BOOLEAN __cdecl FN_RtlDeleteFunctionTable( IN PRUNTIME_FUNCTION FunctionTable );
+__declspec(dllexport) BOOLEAN __cdecl kPrf2Wrap_RtlDeleteFunctionTable( IN PRUNTIME_FUNCTION FunctionTable )
+{
+    static FN_RtlDeleteFunctionTable *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlDeleteFunctionTable", &g_Kernel32);
+    return pfn( FunctionTable );
+}
+
+typedef VOID NTAPI FN_RtlInitializeSListHead( IN PSLIST_HEADER ListHead );
+__declspec(dllexport) VOID NTAPI kPrf2Wrap_RtlInitializeSListHead( IN PSLIST_HEADER ListHead )
+{
+    static FN_RtlInitializeSListHead *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlInitializeSListHead", &g_Kernel32);
+    pfn( ListHead );
+}
+
+typedef PSLIST_ENTRY NTAPI FN_RtlFirstEntrySList( IN const SLIST_HEADER * ListHead );
+__declspec(dllexport) PSLIST_ENTRY NTAPI kPrf2Wrap_RtlFirstEntrySList( IN const SLIST_HEADER * ListHead )
+{
+    static FN_RtlFirstEntrySList *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlFirstEntrySList", &g_Kernel32);
+    return pfn( ListHead );
+}
+
+typedef PSLIST_ENTRY NTAPI FN_RtlInterlockedPopEntrySList( IN PSLIST_HEADER ListHead );
+__declspec(dllexport) PSLIST_ENTRY NTAPI kPrf2Wrap_RtlInterlockedPopEntrySList( IN PSLIST_HEADER ListHead )
+{
+    static FN_RtlInterlockedPopEntrySList *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlInterlockedPopEntrySList", &g_Kernel32);
+    return pfn( ListHead );
+}
+
+typedef PSLIST_ENTRY NTAPI FN_RtlInterlockedPushEntrySList( IN PSLIST_HEADER ListHead, IN PSLIST_ENTRY ListEntry );
+__declspec(dllexport) PSLIST_ENTRY NTAPI kPrf2Wrap_RtlInterlockedPushEntrySList( IN PSLIST_HEADER ListHead, IN PSLIST_ENTRY ListEntry )
+{
+    static FN_RtlInterlockedPushEntrySList *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlInterlockedPushEntrySList", &g_Kernel32);
+    return pfn( ListHead, ListEntry );
+}
+
+typedef PSLIST_ENTRY NTAPI FN_RtlInterlockedFlushSList( IN PSLIST_HEADER ListHead );
+__declspec(dllexport) PSLIST_ENTRY NTAPI kPrf2Wrap_RtlInterlockedFlushSList( IN PSLIST_HEADER ListHead )
+{
+    static FN_RtlInterlockedFlushSList *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlInterlockedFlushSList", &g_Kernel32);
+    return pfn( ListHead );
+}
+
+typedef WORD NTAPI FN_RtlQueryDepthSList( IN PSLIST_HEADER ListHead );
+__declspec(dllexport) WORD NTAPI kPrf2Wrap_RtlQueryDepthSList( IN PSLIST_HEADER ListHead )
+{
+    static FN_RtlQueryDepthSList *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlQueryDepthSList", &g_Kernel32);
+    return pfn( ListHead );
+}
+
+typedef VOID NTAPI FN_RtlCaptureContext( OUT PCONTEXT ContextRecord );
+__declspec(dllexport) VOID NTAPI kPrf2Wrap_RtlCaptureContext( OUT PCONTEXT ContextRecord )
+{
+    static FN_RtlCaptureContext *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlCaptureContext", &g_Kernel32);
+    pfn( ContextRecord );
+}
+
+typedef SIZE_T NTAPI FN_RtlCompareMemory( const VOID * Source1, const VOID * Source2, SIZE_T Length );
+__declspec(dllexport) SIZE_T NTAPI kPrf2Wrap_RtlCompareMemory( const VOID * Source1, const VOID * Source2, SIZE_T Length )
+{
+    static FN_RtlCompareMemory *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlCompareMemory", &g_Kernel32);
+    return pfn( Source1, Source2, Length );
+}
+
+typedef ULONGLONG NTAPI FN_VerSetConditionMask( IN ULONGLONG ConditionMask, IN DWORD TypeMask, IN BYTE Condition );
+__declspec(dllexport) ULONGLONG NTAPI kPrf2Wrap_VerSetConditionMask( IN ULONGLONG ConditionMask, IN DWORD TypeMask, IN BYTE Condition )
+{
+    static FN_VerSetConditionMask *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "VerSetConditionMask", &g_Kernel32);
+    return pfn( ConditionMask, TypeMask, Condition );
+}
+
+typedef DWORD NTAPI FN_RtlSetHeapInformation( IN PVOID HeapHandle, IN HEAP_INFORMATION_CLASS HeapInformationClass, IN PVOID HeapInformation , IN SIZE_T HeapInformationLength );
+__declspec(dllexport) DWORD NTAPI kPrf2Wrap_RtlSetHeapInformation( IN PVOID HeapHandle, IN HEAP_INFORMATION_CLASS HeapInformationClass, IN PVOID HeapInformation , IN SIZE_T HeapInformationLength )
+{
+    static FN_RtlSetHeapInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlSetHeapInformation", &g_Kernel32);
+    return pfn( HeapHandle, HeapInformationClass, HeapInformation , HeapInformationLength );
+}
+
+typedef DWORD NTAPI FN_RtlQueryHeapInformation( IN PVOID HeapHandle, IN HEAP_INFORMATION_CLASS HeapInformationClass, OUT PVOID HeapInformation , IN SIZE_T HeapInformationLength , OUT PSIZE_T ReturnLength );
+__declspec(dllexport) DWORD NTAPI kPrf2Wrap_RtlQueryHeapInformation( IN PVOID HeapHandle, IN HEAP_INFORMATION_CLASS HeapInformationClass, OUT PVOID HeapInformation , IN SIZE_T HeapInformationLength , OUT PSIZE_T ReturnLength )
+{
+    static FN_RtlQueryHeapInformation *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlQueryHeapInformation", &g_Kernel32);
+    return pfn( HeapHandle, HeapInformationClass, HeapInformation , HeapInformationLength , ReturnLength );
+}
+
+typedef HANDLE WINAPI FN_CreateToolhelp32Snapshot( DWORD dwFlags, DWORD th32ProcessID );
+__declspec(dllexport) HANDLE WINAPI kPrf2Wrap_CreateToolhelp32Snapshot( DWORD dwFlags, DWORD th32ProcessID )
+{
+    static FN_CreateToolhelp32Snapshot *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "CreateToolhelp32Snapshot", &g_Kernel32);
+    return pfn( dwFlags, th32ProcessID );
+}
+
+typedef BOOL WINAPI FN_Heap32ListFirst( HANDLE hSnapshot, LPHEAPLIST32 lphl );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Heap32ListFirst( HANDLE hSnapshot, LPHEAPLIST32 lphl )
+{
+    static FN_Heap32ListFirst *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Heap32ListFirst", &g_Kernel32);
+    return pfn( hSnapshot, lphl );
+}
+
+typedef BOOL WINAPI FN_Heap32ListNext( HANDLE hSnapshot, LPHEAPLIST32 lphl );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Heap32ListNext( HANDLE hSnapshot, LPHEAPLIST32 lphl )
+{
+    static FN_Heap32ListNext *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Heap32ListNext", &g_Kernel32);
+    return pfn( hSnapshot, lphl );
+}
+
+typedef BOOL WINAPI FN_Heap32First( LPHEAPENTRY32 lphe, DWORD th32ProcessID, ULONG_PTR th32HeapID );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Heap32First( LPHEAPENTRY32 lphe, DWORD th32ProcessID, ULONG_PTR th32HeapID )
+{
+    static FN_Heap32First *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Heap32First", &g_Kernel32);
+    return pfn( lphe, th32ProcessID, th32HeapID );
+}
+
+typedef BOOL WINAPI FN_Heap32Next( LPHEAPENTRY32 lphe );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Heap32Next( LPHEAPENTRY32 lphe )
+{
+    static FN_Heap32Next *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Heap32Next", &g_Kernel32);
+    return pfn( lphe );
+}
+
+typedef BOOL WINAPI FN_Toolhelp32ReadProcessMemory( DWORD th32ProcessID, LPCVOID lpBaseAddress, LPVOID lpBuffer, SIZE_T cbRead, SIZE_T * lpNumberOfBytesRead );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Toolhelp32ReadProcessMemory( DWORD th32ProcessID, LPCVOID lpBaseAddress, LPVOID lpBuffer, SIZE_T cbRead, SIZE_T * lpNumberOfBytesRead )
+{
+    static FN_Toolhelp32ReadProcessMemory *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Toolhelp32ReadProcessMemory", &g_Kernel32);
+    return pfn( th32ProcessID, lpBaseAddress, lpBuffer, cbRead, lpNumberOfBytesRead );
+}
+
+typedef BOOL WINAPI FN_Process32FirstW( HANDLE hSnapshot, LPPROCESSENTRY32W lppe );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Process32FirstW( HANDLE hSnapshot, LPPROCESSENTRY32W lppe )
+{
+    static FN_Process32FirstW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Process32FirstW", &g_Kernel32);
+    return pfn( hSnapshot, lppe );
+}
+
+typedef BOOL WINAPI FN_Process32NextW( HANDLE hSnapshot, LPPROCESSENTRY32W lppe );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Process32NextW( HANDLE hSnapshot, LPPROCESSENTRY32W lppe )
+{
+    static FN_Process32NextW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Process32NextW", &g_Kernel32);
+    return pfn( hSnapshot, lppe );
+}
+
+typedef BOOL WINAPI FN_Process32First( HANDLE hSnapshot, LPPROCESSENTRY32 lppe );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Process32First( HANDLE hSnapshot, LPPROCESSENTRY32 lppe )
+{
+    static FN_Process32First *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Process32First", &g_Kernel32);
+    return pfn( hSnapshot, lppe );
+}
+
+typedef BOOL WINAPI FN_Process32Next( HANDLE hSnapshot, LPPROCESSENTRY32 lppe );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Process32Next( HANDLE hSnapshot, LPPROCESSENTRY32 lppe )
+{
+    static FN_Process32Next *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Process32Next", &g_Kernel32);
+    return pfn( hSnapshot, lppe );
+}
+
+typedef BOOL WINAPI FN_Thread32First( HANDLE hSnapshot, LPTHREADENTRY32 lpte );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Thread32First( HANDLE hSnapshot, LPTHREADENTRY32 lpte )
+{
+    static FN_Thread32First *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Thread32First", &g_Kernel32);
+    return pfn( hSnapshot, lpte );
+}
+
+typedef BOOL WINAPI FN_Thread32Next( HANDLE hSnapshot, LPTHREADENTRY32 lpte );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Thread32Next( HANDLE hSnapshot, LPTHREADENTRY32 lpte )
+{
+    static FN_Thread32Next *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Thread32Next", &g_Kernel32);
+    return pfn( hSnapshot, lpte );
+}
+
+typedef BOOL WINAPI FN_Module32FirstW( HANDLE hSnapshot, LPMODULEENTRY32W lpme );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Module32FirstW( HANDLE hSnapshot, LPMODULEENTRY32W lpme )
+{
+    static FN_Module32FirstW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Module32FirstW", &g_Kernel32);
+    return pfn( hSnapshot, lpme );
+}
+
+typedef BOOL WINAPI FN_Module32NextW( HANDLE hSnapshot, LPMODULEENTRY32W lpme );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Module32NextW( HANDLE hSnapshot, LPMODULEENTRY32W lpme )
+{
+    static FN_Module32NextW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Module32NextW", &g_Kernel32);
+    return pfn( hSnapshot, lpme );
+}
+
+typedef BOOL WINAPI FN_Module32First( HANDLE hSnapshot, LPMODULEENTRY32 lpme );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Module32First( HANDLE hSnapshot, LPMODULEENTRY32 lpme )
+{
+    static FN_Module32First *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Module32First", &g_Kernel32);
+    return pfn( hSnapshot, lpme );
+}
+
+typedef BOOL WINAPI FN_Module32Next( HANDLE hSnapshot, LPMODULEENTRY32 lpme );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_Module32Next( HANDLE hSnapshot, LPMODULEENTRY32 lpme )
+{
+    static FN_Module32Next *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "Module32Next", &g_Kernel32);
+    return pfn( hSnapshot, lpme );
+}
+
+typedef BOOL WINAPI FN_ReplaceFile( LPCSTR lpReplacedFileName, LPCSTR lpReplacementFileName, LPCSTR lpBackupFileName, DWORD dwReplaceFlags, LPVOID lpExclude, LPVOID lpReserved );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_ReplaceFile( LPCSTR lpReplacedFileName, LPCSTR lpReplacementFileName, LPCSTR lpBackupFileName, DWORD dwReplaceFlags, LPVOID lpExclude, LPVOID lpReserved )
+{
+    static FN_ReplaceFile *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "ReplaceFile", &g_Kernel32);
+    return pfn( lpReplacedFileName, lpReplacementFileName, lpBackupFileName, dwReplaceFlags, lpExclude, lpReserved );
+}
+
+typedef BOOL WINAPI FN_SetConsoleCursor( PVOID pvUnknown1, PVOID pvUnknown2 );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_SetConsoleCursor( PVOID pvUnknown1, PVOID pvUnknown2 )
+{
+    static FN_SetConsoleCursor *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "SetConsoleCursor", &g_Kernel32);
+    return pfn( pvUnknown1, pvUnknown2 );
+}
+
+typedef LPCH WINAPI FN_GetEnvironmentStringsA( VOID );
+__declspec(dllexport) LPCH WINAPI kPrf2Wrap_GetEnvironmentStringsA( VOID )
+{
+    static FN_GetEnvironmentStringsA *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetEnvironmentStringsA", &g_Kernel32);
+    return pfn ();
+}
+
+typedef BOOL WINAPI FN_GetBinaryType( LPCSTR lpApplicationName, LPDWORD lpBinaryType );
+__declspec(dllexport) BOOL WINAPI kPrf2Wrap_GetBinaryType( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
+{
+    static FN_GetBinaryType *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "GetBinaryType", &g_Kernel32);
+    return pfn( lpApplicationName, lpBinaryType );
+}
+
+typedef WORD NTAPI FN_RtlCaptureStackBackTrace( DWORD FramesToSkip, DWORD FramesToCapture, PVOID * BackTrace, PDWORD BackTraceHash );
+__declspec(dllexport) WORD NTAPI kPrf2Wrap_RtlCaptureStackBackTrace( DWORD FramesToSkip, DWORD FramesToCapture, PVOID * BackTrace, PDWORD BackTraceHash )
+{
+    static FN_RtlCaptureStackBackTrace *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlCaptureStackBackTrace", &g_Kernel32);
+    return pfn( FramesToSkip, FramesToCapture, BackTrace, BackTraceHash );
+}
+
+typedef PVOID FN_RtlFillMemory( PVOID pv, int ch, SIZE_T cb );
+__declspec(dllexport) PVOID kPrf2Wrap_RtlFillMemory( PVOID pv, int ch, SIZE_T cb )
+{
+    static FN_RtlFillMemory *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlFillMemory", &g_Kernel32);
+    return pfn( pv, ch, cb );
+}
+
+typedef PVOID FN_RtlZeroMemory( PVOID pv, SIZE_T cb );
+__declspec(dllexport) PVOID kPrf2Wrap_RtlZeroMemory( PVOID pv, SIZE_T cb )
+{
+    static FN_RtlZeroMemory *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlZeroMemory", &g_Kernel32);
+    return pfn( pv, cb );
+}
+
+typedef PVOID FN_RtlMoveMemory( PVOID pvDst, PVOID pvSrc, SIZE_T cb );
+__declspec(dllexport) PVOID kPrf2Wrap_RtlMoveMemory( PVOID pvDst, PVOID pvSrc, SIZE_T cb )
+{
+    static FN_RtlMoveMemory *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlMoveMemory", &g_Kernel32);
+    return pfn( pvDst, pvSrc, cb );
+}
+
+typedef VOID NTAPI FN_RtlUnwind( PVOID TargetFrame, PVOID TargetIp, PEXCEPTION_RECORD ExceptionRecord, PVOID ReturnValue );
+__declspec(dllexport) VOID NTAPI kPrf2Wrap_RtlUnwind( PVOID TargetFrame, PVOID TargetIp, PEXCEPTION_RECORD ExceptionRecord, PVOID ReturnValue )
+{
+    static FN_RtlUnwind *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlUnwind", &g_Kernel32);
+    pfn( TargetFrame, TargetIp, ExceptionRecord, ReturnValue );
+}
+
+typedef VOID NTAPI FN_RtlUnwindEx( FRAME_POINTERS TargetFrame, PVOID TargetIp, PEXCEPTION_RECORD ExceptionRecord, PVOID ReturnValue, PCONTEXT ContextRecord, PUNWIND_HISTORY_TABLE HistoryTable );
+__declspec(dllexport) VOID NTAPI kPrf2Wrap_RtlUnwindEx( FRAME_POINTERS TargetFrame, PVOID TargetIp, PEXCEPTION_RECORD ExceptionRecord, PVOID ReturnValue, PCONTEXT ContextRecord, PUNWIND_HISTORY_TABLE HistoryTable )
+{
+    static FN_RtlUnwindEx *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlUnwindEx", &g_Kernel32);
+    pfn( TargetFrame, TargetIp, ExceptionRecord, ReturnValue, ContextRecord, HistoryTable );
+}
+
+typedef ULONGLONG WINAPI FN_RtlVirtualUnwind( ULONG HandlerType, ULONGLONG ImageBase, ULONGLONG ControlPC, PRUNTIME_FUNCTION FunctionEntry, PCONTEXT ContextRecord, PBOOLEAN InFunction, PFRAME_POINTERS EstablisherFrame, PKNONVOLATILE_CONTEXT_POINTERS ContextPointers );
+__declspec(dllexport) ULONGLONG WINAPI kPrf2Wrap_RtlVirtualUnwind( ULONG HandlerType, ULONGLONG ImageBase, ULONGLONG ControlPC, PRUNTIME_FUNCTION FunctionEntry, PCONTEXT ContextRecord, PBOOLEAN InFunction, PFRAME_POINTERS EstablisherFrame, PKNONVOLATILE_CONTEXT_POINTERS ContextPointers )
+{
+    static FN_RtlVirtualUnwind *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlVirtualUnwind", &g_Kernel32);
+    return pfn( HandlerType, ImageBase, ControlPC, FunctionEntry, ContextRecord, InFunction, EstablisherFrame, ContextPointers );
+}
+
+typedef PVOID WINAPI FN_RtlPcToFileHeader( PVOID PcValue, PVOID * BaseOfImage );
+__declspec(dllexport) PVOID WINAPI kPrf2Wrap_RtlPcToFileHeader( PVOID PcValue, PVOID * BaseOfImage )
+{
+    static FN_RtlPcToFileHeader *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlPcToFileHeader", &g_Kernel32);
+    return pfn( PcValue, BaseOfImage );
+}
+
+typedef PVOID WINAPI FN_RtlLookupFunctionEntry( ULONGLONG ControlPC, PULONGLONG ImageBase, PULONGLONG TargetGp );
+__declspec(dllexport) PVOID WINAPI kPrf2Wrap_RtlLookupFunctionEntry( ULONGLONG ControlPC, PULONGLONG ImageBase, PULONGLONG TargetGp )
+{
+    static FN_RtlLookupFunctionEntry *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlLookupFunctionEntry", &g_Kernel32);
+    return pfn( ControlPC, ImageBase, TargetGp );
+}
+
+typedef void WINAPI FN_RtlRaiseException(PEXCEPTION_RECORD pXcpRec);
+__declspec(dllexport) void WINAPI kPrf2Wrap_RtlRaiseException(PEXCEPTION_RECORD pXcpRec)
+{
+    static FN_RtlRaiseException *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "RtlRaiseException", &g_Kernel32);
+    pfn( pXcpRec);
+}
+
+typedef int WINAPI FN_uaw_lstrcmpW( LPCUWSTR lpString1, LPCUWSTR lpString2 );
+__declspec(dllexport) int WINAPI kPrf2Wrap_uaw_lstrcmpW( LPCUWSTR lpString1, LPCUWSTR lpString2 )
+{
+    static FN_uaw_lstrcmpW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "uaw_lstrcmpW", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef int WINAPI FN_uaw_lstrcmpiW( LPCUWSTR lpString1, LPCUWSTR lpString2 );
+__declspec(dllexport) int WINAPI kPrf2Wrap_uaw_lstrcmpiW( LPCUWSTR lpString1, LPCUWSTR lpString2 )
+{
+    static FN_uaw_lstrcmpiW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "uaw_lstrcmpiW", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef int WINAPI FN_uaw_lstrlenW( LPCUWSTR lpString );
+__declspec(dllexport) int WINAPI kPrf2Wrap_uaw_lstrlenW( LPCUWSTR lpString )
+{
+    static FN_uaw_lstrlenW *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "uaw_lstrlenW", &g_Kernel32);
+    return pfn( lpString );
+}
+
+typedef LPUWSTR WINAPI FN_uaw_wcschr( LPCUWSTR lpString, WCHAR wc );
+__declspec(dllexport) LPUWSTR WINAPI kPrf2Wrap_uaw_wcschr( LPCUWSTR lpString, WCHAR wc )
+{
+    static FN_uaw_wcschr *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "uaw_wcschr", &g_Kernel32);
+    return pfn( lpString, wc );
+}
+
+typedef LPUWSTR WINAPI FN_uaw_wcscpy( LPUWSTR lpDst, LPCUWSTR lpSrc );
+__declspec(dllexport) LPUWSTR WINAPI kPrf2Wrap_uaw_wcscpy( LPUWSTR lpDst, LPCUWSTR lpSrc )
+{
+    static FN_uaw_wcscpy *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "uaw_wcscpy", &g_Kernel32);
+    return pfn( lpDst, lpSrc );
+}
+
+typedef int WINAPI FN_uaw_wcsicmp( LPCUWSTR lp1, LPCUWSTR lp2 );
+__declspec(dllexport) int WINAPI kPrf2Wrap_uaw_wcsicmp( LPCUWSTR lp1, LPCUWSTR lp2 )
+{
+    static FN_uaw_wcsicmp *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "uaw_wcsicmp", &g_Kernel32);
+    return pfn( lp1, lp2 );
+}
+
+typedef SIZE_T WINAPI FN_uaw_wcslen( LPCUWSTR lp1 );
+__declspec(dllexport) SIZE_T WINAPI kPrf2Wrap_uaw_wcslen( LPCUWSTR lp1 )
+{
+    static FN_uaw_wcslen *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "uaw_wcslen", &g_Kernel32);
+    return pfn( lp1 );
+}
+
+typedef LPUWSTR WINAPI FN_uaw_wcsrchr( LPCUWSTR lpString, WCHAR wc );
+__declspec(dllexport) LPUWSTR WINAPI kPrf2Wrap_uaw_wcsrchr( LPCUWSTR lpString, WCHAR wc )
+{
+    static FN_uaw_wcsrchr *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "uaw_wcsrchr", &g_Kernel32);
+    return pfn( lpString, wc );
+}
+
+typedef LPSTR WINAPI FN_lstrcat( LPSTR lpString1, LPCSTR lpString2 );
+__declspec(dllexport) LPSTR WINAPI kPrf2Wrap_lstrcat( LPSTR lpString1, LPCSTR lpString2 )
+{
+    static FN_lstrcat *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcat", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef int WINAPI FN_lstrcmp( LPCSTR lpString1, LPCSTR lpString2 );
+__declspec(dllexport) int WINAPI kPrf2Wrap_lstrcmp( LPCSTR lpString1, LPCSTR lpString2 )
+{
+    static FN_lstrcmp *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcmp", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef int WINAPI FN_lstrcmpi( LPCSTR lpString1, LPCSTR lpString2 );
+__declspec(dllexport) int WINAPI kPrf2Wrap_lstrcmpi( LPCSTR lpString1, LPCSTR lpString2 )
+{
+    static FN_lstrcmpi *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcmpi", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef LPSTR WINAPI FN_lstrcpy( LPSTR lpString1, LPCSTR lpString2 );
+__declspec(dllexport) LPSTR WINAPI kPrf2Wrap_lstrcpy( LPSTR lpString1, LPCSTR lpString2 )
+{
+    static FN_lstrcpy *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcpy", &g_Kernel32);
+    return pfn( lpString1, lpString2 );
+}
+
+typedef LPSTR WINAPI FN_lstrcpyn( LPSTR lpString1, LPCSTR lpString2, int iMaxLength );
+__declspec(dllexport) LPSTR WINAPI kPrf2Wrap_lstrcpyn( LPSTR lpString1, LPCSTR lpString2, int iMaxLength )
+{
+    static FN_lstrcpyn *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrcpyn", &g_Kernel32);
+    return pfn( lpString1, lpString2, iMaxLength );
+}
+
+typedef int WINAPI FN_lstrlen( LPCSTR lpString );
+__declspec(dllexport) int WINAPI kPrf2Wrap_lstrlen( LPCSTR lpString )
+{
+    static FN_lstrlen *pfn = 0;
+    if (!pfn)
+        kPrf2WrapResolve((void **)&pfn, "lstrlen", &g_Kernel32);
+    return pfn( lpString );
+}
+
diff --git a/src/lib/kStuff/kProfiler2/kPrf2WinApiWrappers.c b/src/lib/kStuff/kProfiler2/kPrf2WinApiWrappers.c
new file mode 100644
index 0000000..ecb31f0
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2WinApiWrappers.c
@@ -0,0 +1,123 @@
+/* $Id: kPrf2WinApiWrappers.c 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * Wrappers for a number of common Windows APIs.
+ */
+
+/*
+ * Copyright (c) 2008 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#define _ADVAPI32_
+#define _KERNEL32_
+#define _WIN32_WINNT 0x0600
+#define UNICODE
+#include <Windows.h>
+#include <TLHelp32.h>
+#include <k/kDefs.h>
+#include "kPrf2WinApiWrapperHlp.h"
+
+#if K_ARCH == K_ARCH_X86_32
+typedef PVOID PRUNTIME_FUNCTION;
+typedef FARPROC PGET_RUNTIME_FUNCTION_CALLBACK;
+#endif
+
+/* RtlUnwindEx is used by msvcrt on amd64, but winnt.h only defines it for IA64... */
+typedef struct _FRAME_POINTERS {
+    ULONGLONG MemoryStackFp;
+    ULONGLONG BackingStoreFp;
+} FRAME_POINTERS, *PFRAME_POINTERS;
+typedef PVOID PUNWIND_HISTORY_TABLE;
+typedef PVOID PKNONVOLATILE_CONTEXT_POINTERS;
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+KPRF2WRAPDLL g_Kernel32 =
+{
+    INVALID_HANDLE_VALUE, "KERNEL32"
+};
+
+
+/*
+ * Include the generated code.
+ */
+#include "kPrf2WinApiWrappers-kernel32.h"
+
+/* TODO (amd64):
+
+AddLocalAlternateComputerNameA
+AddLocalAlternateComputerNameW
+EnumerateLocalComputerNamesA
+EnumerateLocalComputerNamesW
+RemoveLocalAlternateComputerNameA
+RemoveLocalAlternateComputerNameW
+
+RtlLookupFunctionEntry
+RtlPcToFileHeader
+RtlRaiseException
+RtlVirtualUnwind
+
+SetConsoleCursor
+SetLocalPrimaryComputerNameA
+SetLocalPrimaryComputerNameW
+__C_specific_handler
+__misaligned_access
+_local_unwind
+
+*/
+
+
+/**
+ * The DLL Main for the Windows API wrapper DLL.
+ *
+ * @returns Success indicator.
+ * @param   hInstDll        The instance handle of the DLL. (i.e. the module handle)
+ * @param   fdwReason       The reason why we're here. This is a 'flag' for reasons of
+ *                          tradition, it's really a kind of enum.
+ * @param   pReserved       Reserved / undocumented something.
+ */
+BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, PVOID pReserved)
+{
+    switch (fdwReason)
+    {
+        case DLL_PROCESS_ATTACH:
+            break;
+
+        case DLL_PROCESS_DETACH:
+            break;
+
+        case DLL_THREAD_ATTACH:
+            break;
+
+        case DLL_THREAD_DETACH:
+            break;
+    }
+
+    return TRUE;
+}
+
diff --git a/src/lib/kStuff/kProfiler2/kPrf2WinApiWrappersImp-amd64.def b/src/lib/kStuff/kProfiler2/kPrf2WinApiWrappersImp-amd64.def
new file mode 100644
index 0000000..48e4198
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2WinApiWrappersImp-amd64.def
@@ -0,0 +1,854 @@
+LIBRARY kPrf2WinApiWrappers
+EXPORTS
+  ActivateActCtx=kPrf2Wrap_ActivateActCtx
+  AddAtomA=kPrf2Wrap_AddAtomA
+  AddAtomW=kPrf2Wrap_AddAtomW
+  AddConsoleAliasA=kPrf2Wrap_AddConsoleAliasA
+  AddConsoleAliasW=kPrf2Wrap_AddConsoleAliasW
+  AddRefActCtx=kPrf2Wrap_AddRefActCtx
+  AddVectoredContinueHandler=kPrf2Wrap_AddVectoredContinueHandler
+  AddVectoredExceptionHandler=kPrf2Wrap_AddVectoredExceptionHandler
+  AllocConsole=kPrf2Wrap_AllocConsole
+  AllocateUserPhysicalPages=kPrf2Wrap_AllocateUserPhysicalPages
+  AreFileApisANSI=kPrf2Wrap_AreFileApisANSI
+  AssignProcessToJobObject=kPrf2Wrap_AssignProcessToJobObject
+  AttachConsole=kPrf2Wrap_AttachConsole
+  BackupRead=kPrf2Wrap_BackupRead
+  BackupSeek=kPrf2Wrap_BackupSeek
+  BackupWrite=kPrf2Wrap_BackupWrite
+  Beep=kPrf2Wrap_Beep
+  BeginUpdateResourceA=kPrf2Wrap_BeginUpdateResourceA
+  BeginUpdateResourceW=kPrf2Wrap_BeginUpdateResourceW
+  BindIoCompletionCallback=kPrf2Wrap_BindIoCompletionCallback
+  BuildCommDCBA=kPrf2Wrap_BuildCommDCBA
+  BuildCommDCBAndTimeoutsA=kPrf2Wrap_BuildCommDCBAndTimeoutsA
+  BuildCommDCBAndTimeoutsW=kPrf2Wrap_BuildCommDCBAndTimeoutsW
+  BuildCommDCBW=kPrf2Wrap_BuildCommDCBW
+  CallNamedPipeA=kPrf2Wrap_CallNamedPipeA
+  CallNamedPipeW=kPrf2Wrap_CallNamedPipeW
+  CancelDeviceWakeupRequest=kPrf2Wrap_CancelDeviceWakeupRequest
+  CancelIo=kPrf2Wrap_CancelIo
+  CancelTimerQueueTimer=kPrf2Wrap_CancelTimerQueueTimer
+  CancelWaitableTimer=kPrf2Wrap_CancelWaitableTimer
+  ChangeTimerQueueTimer=kPrf2Wrap_ChangeTimerQueueTimer
+  CheckNameLegalDOS8Dot3A=kPrf2Wrap_CheckNameLegalDOS8Dot3A
+  CheckNameLegalDOS8Dot3W=kPrf2Wrap_CheckNameLegalDOS8Dot3W
+  CheckRemoteDebuggerPresent=kPrf2Wrap_CheckRemoteDebuggerPresent
+  ClearCommBreak=kPrf2Wrap_ClearCommBreak
+  ClearCommError=kPrf2Wrap_ClearCommError
+  CloseHandle=kPrf2Wrap_CloseHandle
+  CommConfigDialogA=kPrf2Wrap_CommConfigDialogA
+  CommConfigDialogW=kPrf2Wrap_CommConfigDialogW
+  CompareFileTime=kPrf2Wrap_CompareFileTime
+  CompareStringA=kPrf2Wrap_CompareStringA
+  CompareStringW=kPrf2Wrap_CompareStringW
+  ConnectNamedPipe=kPrf2Wrap_ConnectNamedPipe
+  ContinueDebugEvent=kPrf2Wrap_ContinueDebugEvent
+  ConvertDefaultLocale=kPrf2Wrap_ConvertDefaultLocale
+  ConvertFiberToThread=kPrf2Wrap_ConvertFiberToThread
+  ConvertThreadToFiber=kPrf2Wrap_ConvertThreadToFiber
+  ConvertThreadToFiberEx=kPrf2Wrap_ConvertThreadToFiberEx
+  CopyFileA=kPrf2Wrap_CopyFileA
+  CopyFileExA=kPrf2Wrap_CopyFileExA
+  CopyFileExW=kPrf2Wrap_CopyFileExW
+  CopyFileW=kPrf2Wrap_CopyFileW
+  CreateActCtxA=kPrf2Wrap_CreateActCtxA
+  CreateActCtxW=kPrf2Wrap_CreateActCtxW
+  CreateConsoleScreenBuffer=kPrf2Wrap_CreateConsoleScreenBuffer
+  CreateDirectoryA=kPrf2Wrap_CreateDirectoryA
+  CreateDirectoryExA=kPrf2Wrap_CreateDirectoryExA
+  CreateDirectoryExW=kPrf2Wrap_CreateDirectoryExW
+  CreateDirectoryW=kPrf2Wrap_CreateDirectoryW
+  CreateEventA=kPrf2Wrap_CreateEventA
+  CreateEventW=kPrf2Wrap_CreateEventW
+  CreateFiber=kPrf2Wrap_CreateFiber
+  CreateFiberEx=kPrf2Wrap_CreateFiberEx
+  CreateFileA=kPrf2Wrap_CreateFileA
+  CreateFileMappingA=kPrf2Wrap_CreateFileMappingA
+  CreateFileMappingW=kPrf2Wrap_CreateFileMappingW
+  CreateFileW=kPrf2Wrap_CreateFileW
+  CreateHardLinkA=kPrf2Wrap_CreateHardLinkA
+  CreateHardLinkW=kPrf2Wrap_CreateHardLinkW
+  CreateIoCompletionPort=kPrf2Wrap_CreateIoCompletionPort
+  CreateJobObjectA=kPrf2Wrap_CreateJobObjectA
+  CreateJobObjectW=kPrf2Wrap_CreateJobObjectW
+  CreateJobSet=kPrf2Wrap_CreateJobSet
+  CreateMailslotA=kPrf2Wrap_CreateMailslotA
+  CreateMailslotW=kPrf2Wrap_CreateMailslotW
+  CreateMemoryResourceNotification=kPrf2Wrap_CreateMemoryResourceNotification
+  CreateMutexA=kPrf2Wrap_CreateMutexA
+  CreateMutexW=kPrf2Wrap_CreateMutexW
+  CreateNamedPipeA=kPrf2Wrap_CreateNamedPipeA
+  CreateNamedPipeW=kPrf2Wrap_CreateNamedPipeW
+  CreatePipe=kPrf2Wrap_CreatePipe
+  CreateProcessA=kPrf2Wrap_CreateProcessA
+  CreateProcessW=kPrf2Wrap_CreateProcessW
+  CreateRemoteThread=kPrf2Wrap_CreateRemoteThread
+  CreateSemaphoreA=kPrf2Wrap_CreateSemaphoreA
+  CreateSemaphoreW=kPrf2Wrap_CreateSemaphoreW
+  CreateTapePartition=kPrf2Wrap_CreateTapePartition
+  CreateThread=kPrf2Wrap_CreateThread
+  CreateTimerQueue=kPrf2Wrap_CreateTimerQueue
+  CreateTimerQueueTimer=kPrf2Wrap_CreateTimerQueueTimer
+  CreateToolhelp32Snapshot=kPrf2Wrap_CreateToolhelp32Snapshot
+  CreateWaitableTimerA=kPrf2Wrap_CreateWaitableTimerA
+  CreateWaitableTimerW=kPrf2Wrap_CreateWaitableTimerW
+  DeactivateActCtx=kPrf2Wrap_DeactivateActCtx
+  DebugActiveProcess=kPrf2Wrap_DebugActiveProcess
+  DebugActiveProcessStop=kPrf2Wrap_DebugActiveProcessStop
+  DebugBreak=kPrf2Wrap_DebugBreak
+  DebugBreakProcess=kPrf2Wrap_DebugBreakProcess
+  DebugSetProcessKillOnExit=kPrf2Wrap_DebugSetProcessKillOnExit
+  DecodePointer=kPrf2Wrap_DecodePointer
+  DecodeSystemPointer=kPrf2Wrap_DecodeSystemPointer
+  DefineDosDeviceA=kPrf2Wrap_DefineDosDeviceA
+  DefineDosDeviceW=kPrf2Wrap_DefineDosDeviceW
+  DeleteAtom=kPrf2Wrap_DeleteAtom
+  DeleteCriticalSection=kPrf2Wrap_DeleteCriticalSection
+  DeleteFiber=kPrf2Wrap_DeleteFiber
+  DeleteFileA=kPrf2Wrap_DeleteFileA
+  DeleteFileW=kPrf2Wrap_DeleteFileW
+  DeleteTimerQueue=kPrf2Wrap_DeleteTimerQueue
+  DeleteTimerQueueEx=kPrf2Wrap_DeleteTimerQueueEx
+  DeleteTimerQueueTimer=kPrf2Wrap_DeleteTimerQueueTimer
+  DeleteVolumeMountPointA=kPrf2Wrap_DeleteVolumeMountPointA
+  DeleteVolumeMountPointW=kPrf2Wrap_DeleteVolumeMountPointW
+  DeviceIoControl=kPrf2Wrap_DeviceIoControl
+  DisableThreadLibraryCalls=kPrf2Wrap_DisableThreadLibraryCalls
+  DisconnectNamedPipe=kPrf2Wrap_DisconnectNamedPipe
+  DnsHostnameToComputerNameA=kPrf2Wrap_DnsHostnameToComputerNameA
+  DnsHostnameToComputerNameW=kPrf2Wrap_DnsHostnameToComputerNameW
+  DosDateTimeToFileTime=kPrf2Wrap_DosDateTimeToFileTime
+  DuplicateHandle=kPrf2Wrap_DuplicateHandle
+  EncodePointer=kPrf2Wrap_EncodePointer
+  EncodeSystemPointer=kPrf2Wrap_EncodeSystemPointer
+  EndUpdateResourceA=kPrf2Wrap_EndUpdateResourceA
+  EndUpdateResourceW=kPrf2Wrap_EndUpdateResourceW
+  EnterCriticalSection=kPrf2Wrap_EnterCriticalSection
+  EnumCalendarInfoA=kPrf2Wrap_EnumCalendarInfoA
+  EnumCalendarInfoExA=kPrf2Wrap_EnumCalendarInfoExA
+  EnumCalendarInfoExW=kPrf2Wrap_EnumCalendarInfoExW
+  EnumCalendarInfoW=kPrf2Wrap_EnumCalendarInfoW
+  EnumDateFormatsA=kPrf2Wrap_EnumDateFormatsA
+  EnumDateFormatsExA=kPrf2Wrap_EnumDateFormatsExA
+  EnumDateFormatsExW=kPrf2Wrap_EnumDateFormatsExW
+  EnumDateFormatsW=kPrf2Wrap_EnumDateFormatsW
+  EnumLanguageGroupLocalesA=kPrf2Wrap_EnumLanguageGroupLocalesA
+  EnumLanguageGroupLocalesW=kPrf2Wrap_EnumLanguageGroupLocalesW
+  EnumResourceLanguagesA=kPrf2Wrap_EnumResourceLanguagesA
+  EnumResourceLanguagesW=kPrf2Wrap_EnumResourceLanguagesW
+  EnumResourceNamesA=kPrf2Wrap_EnumResourceNamesA
+  EnumResourceNamesW=kPrf2Wrap_EnumResourceNamesW
+  EnumResourceTypesA=kPrf2Wrap_EnumResourceTypesA
+  EnumResourceTypesW=kPrf2Wrap_EnumResourceTypesW
+  EnumSystemCodePagesA=kPrf2Wrap_EnumSystemCodePagesA
+  EnumSystemCodePagesW=kPrf2Wrap_EnumSystemCodePagesW
+  EnumSystemFirmwareTables=kPrf2Wrap_EnumSystemFirmwareTables
+  EnumSystemGeoID=kPrf2Wrap_EnumSystemGeoID
+  EnumSystemLanguageGroupsA=kPrf2Wrap_EnumSystemLanguageGroupsA
+  EnumSystemLanguageGroupsW=kPrf2Wrap_EnumSystemLanguageGroupsW
+  EnumSystemLocalesA=kPrf2Wrap_EnumSystemLocalesA
+  EnumSystemLocalesW=kPrf2Wrap_EnumSystemLocalesW
+  EnumTimeFormatsA=kPrf2Wrap_EnumTimeFormatsA
+  EnumTimeFormatsW=kPrf2Wrap_EnumTimeFormatsW
+  EnumUILanguagesA=kPrf2Wrap_EnumUILanguagesA
+  EnumUILanguagesW=kPrf2Wrap_EnumUILanguagesW
+  EraseTape=kPrf2Wrap_EraseTape
+  EscapeCommFunction=kPrf2Wrap_EscapeCommFunction
+  ExitProcess=kPrf2Wrap_ExitProcess
+  ExitThread=kPrf2Wrap_ExitThread
+  ExpandEnvironmentStringsA=kPrf2Wrap_ExpandEnvironmentStringsA
+  ExpandEnvironmentStringsW=kPrf2Wrap_ExpandEnvironmentStringsW
+  FatalAppExitA=kPrf2Wrap_FatalAppExitA
+  FatalAppExitW=kPrf2Wrap_FatalAppExitW
+  FatalExit=kPrf2Wrap_FatalExit
+  FileTimeToDosDateTime=kPrf2Wrap_FileTimeToDosDateTime
+  FileTimeToLocalFileTime=kPrf2Wrap_FileTimeToLocalFileTime
+  FileTimeToSystemTime=kPrf2Wrap_FileTimeToSystemTime
+  FillConsoleOutputAttribute=kPrf2Wrap_FillConsoleOutputAttribute
+  FillConsoleOutputCharacterA=kPrf2Wrap_FillConsoleOutputCharacterA
+  FillConsoleOutputCharacterW=kPrf2Wrap_FillConsoleOutputCharacterW
+  FindActCtxSectionGuid=kPrf2Wrap_FindActCtxSectionGuid
+  FindActCtxSectionStringA=kPrf2Wrap_FindActCtxSectionStringA
+  FindActCtxSectionStringW=kPrf2Wrap_FindActCtxSectionStringW
+  FindAtomA=kPrf2Wrap_FindAtomA
+  FindAtomW=kPrf2Wrap_FindAtomW
+  FindClose=kPrf2Wrap_FindClose
+  FindCloseChangeNotification=kPrf2Wrap_FindCloseChangeNotification
+  FindFirstChangeNotificationA=kPrf2Wrap_FindFirstChangeNotificationA
+  FindFirstChangeNotificationW=kPrf2Wrap_FindFirstChangeNotificationW
+  FindFirstFileA=kPrf2Wrap_FindFirstFileA
+  FindFirstFileExA=kPrf2Wrap_FindFirstFileExA
+  FindFirstFileExW=kPrf2Wrap_FindFirstFileExW
+  FindFirstFileW=kPrf2Wrap_FindFirstFileW
+  FindFirstStreamW=kPrf2Wrap_FindFirstStreamW
+  FindFirstVolumeA=kPrf2Wrap_FindFirstVolumeA
+  FindFirstVolumeMountPointA=kPrf2Wrap_FindFirstVolumeMountPointA
+  FindFirstVolumeMountPointW=kPrf2Wrap_FindFirstVolumeMountPointW
+  FindFirstVolumeW=kPrf2Wrap_FindFirstVolumeW
+  FindNextChangeNotification=kPrf2Wrap_FindNextChangeNotification
+  FindNextFileA=kPrf2Wrap_FindNextFileA
+  FindNextFileW=kPrf2Wrap_FindNextFileW
+  FindNextStreamW=kPrf2Wrap_FindNextStreamW
+  FindNextVolumeA=kPrf2Wrap_FindNextVolumeA
+  FindNextVolumeMountPointA=kPrf2Wrap_FindNextVolumeMountPointA
+  FindNextVolumeMountPointW=kPrf2Wrap_FindNextVolumeMountPointW
+  FindNextVolumeW=kPrf2Wrap_FindNextVolumeW
+  FindResourceA=kPrf2Wrap_FindResourceA
+  FindResourceExA=kPrf2Wrap_FindResourceExA
+  FindResourceExW=kPrf2Wrap_FindResourceExW
+  FindResourceW=kPrf2Wrap_FindResourceW
+  FindVolumeClose=kPrf2Wrap_FindVolumeClose
+  FindVolumeMountPointClose=kPrf2Wrap_FindVolumeMountPointClose
+  FlsAlloc=kPrf2Wrap_FlsAlloc
+  FlsFree=kPrf2Wrap_FlsFree
+  FlsGetValue=kPrf2Wrap_FlsGetValue
+  FlsSetValue=kPrf2Wrap_FlsSetValue
+  FlushConsoleInputBuffer=kPrf2Wrap_FlushConsoleInputBuffer
+  FlushFileBuffers=kPrf2Wrap_FlushFileBuffers
+  FlushInstructionCache=kPrf2Wrap_FlushInstructionCache
+  FlushViewOfFile=kPrf2Wrap_FlushViewOfFile
+  FoldStringA=kPrf2Wrap_FoldStringA
+  FoldStringW=kPrf2Wrap_FoldStringW
+  FormatMessageA=kPrf2Wrap_FormatMessageA
+  FormatMessageW=kPrf2Wrap_FormatMessageW
+  FreeConsole=kPrf2Wrap_FreeConsole
+  FreeEnvironmentStringsA=kPrf2Wrap_FreeEnvironmentStringsA
+  FreeEnvironmentStringsW=kPrf2Wrap_FreeEnvironmentStringsW
+  FreeLibrary=kPrf2Wrap_FreeLibrary
+  FreeLibraryAndExitThread=kPrf2Wrap_FreeLibraryAndExitThread
+  FreeResource=kPrf2Wrap_FreeResource
+  FreeUserPhysicalPages=kPrf2Wrap_FreeUserPhysicalPages
+  GenerateConsoleCtrlEvent=kPrf2Wrap_GenerateConsoleCtrlEvent
+  GetACP=kPrf2Wrap_GetACP
+  GetAtomNameA=kPrf2Wrap_GetAtomNameA
+  GetAtomNameW=kPrf2Wrap_GetAtomNameW
+  GetBinaryType=kPrf2Wrap_GetBinaryType
+  GetBinaryTypeA=kPrf2Wrap_GetBinaryTypeA
+  GetBinaryTypeW=kPrf2Wrap_GetBinaryTypeW
+  GetCPInfo=kPrf2Wrap_GetCPInfo
+  GetCPInfoExA=kPrf2Wrap_GetCPInfoExA
+  GetCPInfoExW=kPrf2Wrap_GetCPInfoExW
+  GetCalendarInfoA=kPrf2Wrap_GetCalendarInfoA
+  GetCalendarInfoW=kPrf2Wrap_GetCalendarInfoW
+  GetCommConfig=kPrf2Wrap_GetCommConfig
+  GetCommMask=kPrf2Wrap_GetCommMask
+  GetCommModemStatus=kPrf2Wrap_GetCommModemStatus
+  GetCommProperties=kPrf2Wrap_GetCommProperties
+  GetCommState=kPrf2Wrap_GetCommState
+  GetCommTimeouts=kPrf2Wrap_GetCommTimeouts
+  GetCommandLineA=kPrf2Wrap_GetCommandLineA
+  GetCommandLineW=kPrf2Wrap_GetCommandLineW
+  GetCompressedFileSizeA=kPrf2Wrap_GetCompressedFileSizeA
+  GetCompressedFileSizeW=kPrf2Wrap_GetCompressedFileSizeW
+  GetComputerNameA=kPrf2Wrap_GetComputerNameA
+  GetComputerNameExA=kPrf2Wrap_GetComputerNameExA
+  GetComputerNameExW=kPrf2Wrap_GetComputerNameExW
+  GetComputerNameW=kPrf2Wrap_GetComputerNameW
+  GetConsoleAliasA=kPrf2Wrap_GetConsoleAliasA
+  GetConsoleAliasExesA=kPrf2Wrap_GetConsoleAliasExesA
+  GetConsoleAliasExesLengthA=kPrf2Wrap_GetConsoleAliasExesLengthA
+  GetConsoleAliasExesLengthW=kPrf2Wrap_GetConsoleAliasExesLengthW
+  GetConsoleAliasExesW=kPrf2Wrap_GetConsoleAliasExesW
+  GetConsoleAliasW=kPrf2Wrap_GetConsoleAliasW
+  GetConsoleAliasesA=kPrf2Wrap_GetConsoleAliasesA
+  GetConsoleAliasesLengthA=kPrf2Wrap_GetConsoleAliasesLengthA
+  GetConsoleAliasesLengthW=kPrf2Wrap_GetConsoleAliasesLengthW
+  GetConsoleAliasesW=kPrf2Wrap_GetConsoleAliasesW
+  GetConsoleCP=kPrf2Wrap_GetConsoleCP
+  GetConsoleCursorInfo=kPrf2Wrap_GetConsoleCursorInfo
+  GetConsoleDisplayMode=kPrf2Wrap_GetConsoleDisplayMode
+  GetConsoleFontSize=kPrf2Wrap_GetConsoleFontSize
+  GetConsoleMode=kPrf2Wrap_GetConsoleMode
+  GetConsoleOutputCP=kPrf2Wrap_GetConsoleOutputCP
+  GetConsoleProcessList=kPrf2Wrap_GetConsoleProcessList
+  GetConsoleScreenBufferInfo=kPrf2Wrap_GetConsoleScreenBufferInfo
+  GetConsoleSelectionInfo=kPrf2Wrap_GetConsoleSelectionInfo
+  GetConsoleTitleA=kPrf2Wrap_GetConsoleTitleA
+  GetConsoleTitleW=kPrf2Wrap_GetConsoleTitleW
+  GetConsoleWindow=kPrf2Wrap_GetConsoleWindow
+  GetCurrencyFormatA=kPrf2Wrap_GetCurrencyFormatA
+  GetCurrencyFormatW=kPrf2Wrap_GetCurrencyFormatW
+  GetCurrentActCtx=kPrf2Wrap_GetCurrentActCtx
+  GetCurrentConsoleFont=kPrf2Wrap_GetCurrentConsoleFont
+  GetCurrentDirectoryA=kPrf2Wrap_GetCurrentDirectoryA
+  GetCurrentDirectoryW=kPrf2Wrap_GetCurrentDirectoryW
+  GetCurrentProcess=kPrf2Wrap_GetCurrentProcess
+  GetCurrentProcessId=kPrf2Wrap_GetCurrentProcessId
+  GetCurrentProcessorNumber=kPrf2Wrap_GetCurrentProcessorNumber
+  GetCurrentThread=kPrf2Wrap_GetCurrentThread
+  GetCurrentThreadId=kPrf2Wrap_GetCurrentThreadId
+  GetDateFormatA=kPrf2Wrap_GetDateFormatA
+  GetDateFormatW=kPrf2Wrap_GetDateFormatW
+  GetDefaultCommConfigA=kPrf2Wrap_GetDefaultCommConfigA
+  GetDefaultCommConfigW=kPrf2Wrap_GetDefaultCommConfigW
+  GetDevicePowerState=kPrf2Wrap_GetDevicePowerState
+  GetDiskFreeSpaceA=kPrf2Wrap_GetDiskFreeSpaceA
+  GetDiskFreeSpaceExA=kPrf2Wrap_GetDiskFreeSpaceExA
+  GetDiskFreeSpaceExW=kPrf2Wrap_GetDiskFreeSpaceExW
+  GetDiskFreeSpaceW=kPrf2Wrap_GetDiskFreeSpaceW
+  GetDllDirectoryA=kPrf2Wrap_GetDllDirectoryA
+  GetDllDirectoryW=kPrf2Wrap_GetDllDirectoryW
+  GetDriveTypeA=kPrf2Wrap_GetDriveTypeA
+  GetDriveTypeW=kPrf2Wrap_GetDriveTypeW
+  GetEnvironmentStrings=kPrf2Wrap_GetEnvironmentStrings
+  GetEnvironmentStringsA=kPrf2Wrap_GetEnvironmentStringsA
+  GetEnvironmentStringsW=kPrf2Wrap_GetEnvironmentStringsW
+  GetEnvironmentVariableA=kPrf2Wrap_GetEnvironmentVariableA
+  GetEnvironmentVariableW=kPrf2Wrap_GetEnvironmentVariableW
+  GetExitCodeProcess=kPrf2Wrap_GetExitCodeProcess
+  GetExitCodeThread=kPrf2Wrap_GetExitCodeThread
+  GetFileAttributesA=kPrf2Wrap_GetFileAttributesA
+  GetFileAttributesExA=kPrf2Wrap_GetFileAttributesExA
+  GetFileAttributesExW=kPrf2Wrap_GetFileAttributesExW
+  GetFileAttributesW=kPrf2Wrap_GetFileAttributesW
+  GetFileInformationByHandle=kPrf2Wrap_GetFileInformationByHandle
+  GetFileSize=kPrf2Wrap_GetFileSize
+  GetFileSizeEx=kPrf2Wrap_GetFileSizeEx
+  GetFileTime=kPrf2Wrap_GetFileTime
+  GetFileType=kPrf2Wrap_GetFileType
+  GetFirmwareEnvironmentVariableA=kPrf2Wrap_GetFirmwareEnvironmentVariableA
+  GetFirmwareEnvironmentVariableW=kPrf2Wrap_GetFirmwareEnvironmentVariableW
+  GetFullPathNameA=kPrf2Wrap_GetFullPathNameA
+  GetFullPathNameW=kPrf2Wrap_GetFullPathNameW
+  GetGeoInfoA=kPrf2Wrap_GetGeoInfoA
+  GetGeoInfoW=kPrf2Wrap_GetGeoInfoW
+  GetHandleInformation=kPrf2Wrap_GetHandleInformation
+  GetLargePageMinimum=kPrf2Wrap_GetLargePageMinimum
+  GetLargestConsoleWindowSize=kPrf2Wrap_GetLargestConsoleWindowSize
+  GetLastError=kPrf2Wrap_GetLastError
+  GetLocalTime=kPrf2Wrap_GetLocalTime
+  GetLocaleInfoA=kPrf2Wrap_GetLocaleInfoA
+  GetLocaleInfoW=kPrf2Wrap_GetLocaleInfoW
+  GetLogicalDriveStringsA=kPrf2Wrap_GetLogicalDriveStringsA
+  GetLogicalDriveStringsW=kPrf2Wrap_GetLogicalDriveStringsW
+  GetLogicalDrives=kPrf2Wrap_GetLogicalDrives
+  GetLogicalProcessorInformation=kPrf2Wrap_GetLogicalProcessorInformation
+  GetLongPathNameA=kPrf2Wrap_GetLongPathNameA
+  GetLongPathNameW=kPrf2Wrap_GetLongPathNameW
+  GetMailslotInfo=kPrf2Wrap_GetMailslotInfo
+  GetModuleFileNameA=kPrf2Wrap_GetModuleFileNameA
+  GetModuleFileNameW=kPrf2Wrap_GetModuleFileNameW
+  GetModuleHandleA=kPrf2Wrap_GetModuleHandleA
+  GetModuleHandleExA=kPrf2Wrap_GetModuleHandleExA
+  GetModuleHandleExW=kPrf2Wrap_GetModuleHandleExW
+  GetModuleHandleW=kPrf2Wrap_GetModuleHandleW
+  GetNLSVersion=kPrf2Wrap_GetNLSVersion
+  GetNamedPipeHandleStateA=kPrf2Wrap_GetNamedPipeHandleStateA
+  GetNamedPipeHandleStateW=kPrf2Wrap_GetNamedPipeHandleStateW
+  GetNamedPipeInfo=kPrf2Wrap_GetNamedPipeInfo
+  GetNativeSystemInfo=kPrf2Wrap_GetNativeSystemInfo
+  GetNumaAvailableMemoryNode=kPrf2Wrap_GetNumaAvailableMemoryNode
+  GetNumaHighestNodeNumber=kPrf2Wrap_GetNumaHighestNodeNumber
+  GetNumaNodeProcessorMask=kPrf2Wrap_GetNumaNodeProcessorMask
+  GetNumaProcessorNode=kPrf2Wrap_GetNumaProcessorNode
+  GetNumberFormatA=kPrf2Wrap_GetNumberFormatA
+  GetNumberFormatW=kPrf2Wrap_GetNumberFormatW
+  GetNumberOfConsoleInputEvents=kPrf2Wrap_GetNumberOfConsoleInputEvents
+  GetNumberOfConsoleMouseButtons=kPrf2Wrap_GetNumberOfConsoleMouseButtons
+  GetOEMCP=kPrf2Wrap_GetOEMCP
+  GetOverlappedResult=kPrf2Wrap_GetOverlappedResult
+  GetPriorityClass=kPrf2Wrap_GetPriorityClass
+  GetPrivateProfileIntA=kPrf2Wrap_GetPrivateProfileIntA
+  GetPrivateProfileIntW=kPrf2Wrap_GetPrivateProfileIntW
+  GetPrivateProfileSectionA=kPrf2Wrap_GetPrivateProfileSectionA
+  GetPrivateProfileSectionNamesA=kPrf2Wrap_GetPrivateProfileSectionNamesA
+  GetPrivateProfileSectionNamesW=kPrf2Wrap_GetPrivateProfileSectionNamesW
+  GetPrivateProfileSectionW=kPrf2Wrap_GetPrivateProfileSectionW
+  GetPrivateProfileStringA=kPrf2Wrap_GetPrivateProfileStringA
+  GetPrivateProfileStringW=kPrf2Wrap_GetPrivateProfileStringW
+  GetPrivateProfileStructA=kPrf2Wrap_GetPrivateProfileStructA
+  GetPrivateProfileStructW=kPrf2Wrap_GetPrivateProfileStructW
+  GetProcAddress=kPrf2Wrap_GetProcAddress
+  GetProcessAffinityMask=kPrf2Wrap_GetProcessAffinityMask
+  GetProcessHandleCount=kPrf2Wrap_GetProcessHandleCount
+  GetProcessHeap=kPrf2Wrap_GetProcessHeap
+  GetProcessHeaps=kPrf2Wrap_GetProcessHeaps
+  GetProcessId=kPrf2Wrap_GetProcessId
+  GetProcessIdOfThread=kPrf2Wrap_GetProcessIdOfThread
+  GetProcessIoCounters=kPrf2Wrap_GetProcessIoCounters
+  GetProcessPriorityBoost=kPrf2Wrap_GetProcessPriorityBoost
+  GetProcessShutdownParameters=kPrf2Wrap_GetProcessShutdownParameters
+  GetProcessTimes=kPrf2Wrap_GetProcessTimes
+  GetProcessVersion=kPrf2Wrap_GetProcessVersion
+  GetProcessWorkingSetSize=kPrf2Wrap_GetProcessWorkingSetSize
+  GetProcessWorkingSetSizeEx=kPrf2Wrap_GetProcessWorkingSetSizeEx
+  GetProfileIntA=kPrf2Wrap_GetProfileIntA
+  GetProfileIntW=kPrf2Wrap_GetProfileIntW
+  GetProfileSectionA=kPrf2Wrap_GetProfileSectionA
+  GetProfileSectionW=kPrf2Wrap_GetProfileSectionW
+  GetProfileStringA=kPrf2Wrap_GetProfileStringA
+  GetProfileStringW=kPrf2Wrap_GetProfileStringW
+  GetQueuedCompletionStatus=kPrf2Wrap_GetQueuedCompletionStatus
+  GetShortPathNameA=kPrf2Wrap_GetShortPathNameA
+  GetShortPathNameW=kPrf2Wrap_GetShortPathNameW
+  GetStartupInfoA=kPrf2Wrap_GetStartupInfoA
+  GetStartupInfoW=kPrf2Wrap_GetStartupInfoW
+  GetStdHandle=kPrf2Wrap_GetStdHandle
+  GetStringTypeA=kPrf2Wrap_GetStringTypeA
+  GetStringTypeExA=kPrf2Wrap_GetStringTypeExA
+  GetStringTypeExW=kPrf2Wrap_GetStringTypeExW
+  GetStringTypeW=kPrf2Wrap_GetStringTypeW
+  GetSystemDefaultLCID=kPrf2Wrap_GetSystemDefaultLCID
+  GetSystemDefaultLangID=kPrf2Wrap_GetSystemDefaultLangID
+  GetSystemDefaultUILanguage=kPrf2Wrap_GetSystemDefaultUILanguage
+  GetSystemDirectoryA=kPrf2Wrap_GetSystemDirectoryA
+  GetSystemDirectoryW=kPrf2Wrap_GetSystemDirectoryW
+  GetSystemFileCacheSize=kPrf2Wrap_GetSystemFileCacheSize
+  GetSystemFirmwareTable=kPrf2Wrap_GetSystemFirmwareTable
+  GetSystemInfo=kPrf2Wrap_GetSystemInfo
+  GetSystemPowerStatus=kPrf2Wrap_GetSystemPowerStatus
+  GetSystemRegistryQuota=kPrf2Wrap_GetSystemRegistryQuota
+  GetSystemTime=kPrf2Wrap_GetSystemTime
+  GetSystemTimeAdjustment=kPrf2Wrap_GetSystemTimeAdjustment
+  GetSystemTimeAsFileTime=kPrf2Wrap_GetSystemTimeAsFileTime
+  GetSystemTimes=kPrf2Wrap_GetSystemTimes
+  GetSystemWindowsDirectoryA=kPrf2Wrap_GetSystemWindowsDirectoryA
+  GetSystemWindowsDirectoryW=kPrf2Wrap_GetSystemWindowsDirectoryW
+  GetSystemWow64DirectoryA=kPrf2Wrap_GetSystemWow64DirectoryA
+  GetSystemWow64DirectoryW=kPrf2Wrap_GetSystemWow64DirectoryW
+  GetTapeParameters=kPrf2Wrap_GetTapeParameters
+  GetTapePosition=kPrf2Wrap_GetTapePosition
+  GetTapeStatus=kPrf2Wrap_GetTapeStatus
+  GetTempFileNameA=kPrf2Wrap_GetTempFileNameA
+  GetTempFileNameW=kPrf2Wrap_GetTempFileNameW
+  GetTempPathA=kPrf2Wrap_GetTempPathA
+  GetTempPathW=kPrf2Wrap_GetTempPathW
+  GetThreadContext=kPrf2Wrap_GetThreadContext
+  GetThreadIOPendingFlag=kPrf2Wrap_GetThreadIOPendingFlag
+  GetThreadId=kPrf2Wrap_GetThreadId
+  GetThreadLocale=kPrf2Wrap_GetThreadLocale
+  GetThreadPriority=kPrf2Wrap_GetThreadPriority
+  GetThreadPriorityBoost=kPrf2Wrap_GetThreadPriorityBoost
+  GetThreadSelectorEntry=kPrf2Wrap_GetThreadSelectorEntry
+  GetThreadTimes=kPrf2Wrap_GetThreadTimes
+  GetTickCount=kPrf2Wrap_GetTickCount
+  GetTimeFormatA=kPrf2Wrap_GetTimeFormatA
+  GetTimeFormatW=kPrf2Wrap_GetTimeFormatW
+  GetTimeZoneInformation=kPrf2Wrap_GetTimeZoneInformation
+  GetUserDefaultLCID=kPrf2Wrap_GetUserDefaultLCID
+  GetUserDefaultLangID=kPrf2Wrap_GetUserDefaultLangID
+  GetUserDefaultUILanguage=kPrf2Wrap_GetUserDefaultUILanguage
+  GetUserGeoID=kPrf2Wrap_GetUserGeoID
+  GetVersion=kPrf2Wrap_GetVersion
+  GetVersionExA=kPrf2Wrap_GetVersionExA
+  GetVersionExW=kPrf2Wrap_GetVersionExW
+  GetVolumeInformationA=kPrf2Wrap_GetVolumeInformationA
+  GetVolumeInformationW=kPrf2Wrap_GetVolumeInformationW
+  GetVolumeNameForVolumeMountPointA=kPrf2Wrap_GetVolumeNameForVolumeMountPointA
+  GetVolumeNameForVolumeMountPointW=kPrf2Wrap_GetVolumeNameForVolumeMountPointW
+  GetVolumePathNameA=kPrf2Wrap_GetVolumePathNameA
+  GetVolumePathNameW=kPrf2Wrap_GetVolumePathNameW
+  GetVolumePathNamesForVolumeNameA=kPrf2Wrap_GetVolumePathNamesForVolumeNameA
+  GetVolumePathNamesForVolumeNameW=kPrf2Wrap_GetVolumePathNamesForVolumeNameW
+  GetWindowsDirectoryA=kPrf2Wrap_GetWindowsDirectoryA
+  GetWindowsDirectoryW=kPrf2Wrap_GetWindowsDirectoryW
+  GetWriteWatch=kPrf2Wrap_GetWriteWatch
+  GlobalAddAtomA=kPrf2Wrap_GlobalAddAtomA
+  GlobalAddAtomW=kPrf2Wrap_GlobalAddAtomW
+  GlobalAlloc=kPrf2Wrap_GlobalAlloc
+  GlobalCompact=kPrf2Wrap_GlobalCompact
+  GlobalDeleteAtom=kPrf2Wrap_GlobalDeleteAtom
+  GlobalFindAtomA=kPrf2Wrap_GlobalFindAtomA
+  GlobalFindAtomW=kPrf2Wrap_GlobalFindAtomW
+  GlobalFix=kPrf2Wrap_GlobalFix
+  GlobalFlags=kPrf2Wrap_GlobalFlags
+  GlobalFree=kPrf2Wrap_GlobalFree
+  GlobalGetAtomNameA=kPrf2Wrap_GlobalGetAtomNameA
+  GlobalGetAtomNameW=kPrf2Wrap_GlobalGetAtomNameW
+  GlobalHandle=kPrf2Wrap_GlobalHandle
+  GlobalLock=kPrf2Wrap_GlobalLock
+  GlobalMemoryStatus=kPrf2Wrap_GlobalMemoryStatus
+  GlobalMemoryStatusEx=kPrf2Wrap_GlobalMemoryStatusEx
+  GlobalReAlloc=kPrf2Wrap_GlobalReAlloc
+  GlobalSize=kPrf2Wrap_GlobalSize
+  GlobalUnWire=kPrf2Wrap_GlobalUnWire
+  GlobalUnfix=kPrf2Wrap_GlobalUnfix
+  GlobalUnlock=kPrf2Wrap_GlobalUnlock
+  GlobalWire=kPrf2Wrap_GlobalWire
+  Heap32First=kPrf2Wrap_Heap32First
+  Heap32ListFirst=kPrf2Wrap_Heap32ListFirst
+  Heap32ListNext=kPrf2Wrap_Heap32ListNext
+  Heap32Next=kPrf2Wrap_Heap32Next
+  HeapAlloc=kPrf2Wrap_HeapAlloc
+  HeapCompact=kPrf2Wrap_HeapCompact
+  HeapCreate=kPrf2Wrap_HeapCreate
+  HeapDestroy=kPrf2Wrap_HeapDestroy
+  HeapFree=kPrf2Wrap_HeapFree
+  HeapLock=kPrf2Wrap_HeapLock
+  HeapQueryInformation=kPrf2Wrap_HeapQueryInformation
+  HeapReAlloc=kPrf2Wrap_HeapReAlloc
+  HeapSetInformation=kPrf2Wrap_HeapSetInformation
+  HeapSize=kPrf2Wrap_HeapSize
+  HeapUnlock=kPrf2Wrap_HeapUnlock
+  HeapValidate=kPrf2Wrap_HeapValidate
+  HeapWalk=kPrf2Wrap_HeapWalk
+  InitAtomTable=kPrf2Wrap_InitAtomTable
+  InitializeCriticalSection=kPrf2Wrap_InitializeCriticalSection
+  InitializeCriticalSectionAndSpinCount=kPrf2Wrap_InitializeCriticalSectionAndSpinCount
+  InitializeSListHead=kPrf2Wrap_InitializeSListHead
+  InterlockedFlushSList=kPrf2Wrap_InterlockedFlushSList
+  InterlockedPopEntrySList=kPrf2Wrap_InterlockedPopEntrySList
+  InterlockedPushEntrySList=kPrf2Wrap_InterlockedPushEntrySList
+  IsBadCodePtr=kPrf2Wrap_IsBadCodePtr
+  IsBadHugeReadPtr=kPrf2Wrap_IsBadHugeReadPtr
+  IsBadHugeWritePtr=kPrf2Wrap_IsBadHugeWritePtr
+  IsBadReadPtr=kPrf2Wrap_IsBadReadPtr
+  IsBadStringPtrA=kPrf2Wrap_IsBadStringPtrA
+  IsBadStringPtrW=kPrf2Wrap_IsBadStringPtrW
+  IsBadWritePtr=kPrf2Wrap_IsBadWritePtr
+  IsDBCSLeadByte=kPrf2Wrap_IsDBCSLeadByte
+  IsDBCSLeadByteEx=kPrf2Wrap_IsDBCSLeadByteEx
+  IsDebuggerPresent=kPrf2Wrap_IsDebuggerPresent
+  IsNLSDefinedString=kPrf2Wrap_IsNLSDefinedString
+  IsProcessInJob=kPrf2Wrap_IsProcessInJob
+  IsProcessorFeaturePresent=kPrf2Wrap_IsProcessorFeaturePresent
+  IsSystemResumeAutomatic=kPrf2Wrap_IsSystemResumeAutomatic
+  IsValidCodePage=kPrf2Wrap_IsValidCodePage
+  IsValidLanguageGroup=kPrf2Wrap_IsValidLanguageGroup
+  IsValidLocale=kPrf2Wrap_IsValidLocale
+  IsWow64Process=kPrf2Wrap_IsWow64Process
+  LCMapStringA=kPrf2Wrap_LCMapStringA
+  LCMapStringW=kPrf2Wrap_LCMapStringW
+  LeaveCriticalSection=kPrf2Wrap_LeaveCriticalSection
+  LoadLibraryA=kPrf2Wrap_LoadLibraryA
+  LoadLibraryExA=kPrf2Wrap_LoadLibraryExA
+  LoadLibraryExW=kPrf2Wrap_LoadLibraryExW
+  LoadLibraryW=kPrf2Wrap_LoadLibraryW
+  LoadModule=kPrf2Wrap_LoadModule
+  LoadResource=kPrf2Wrap_LoadResource
+  LocalAlloc=kPrf2Wrap_LocalAlloc
+  LocalCompact=kPrf2Wrap_LocalCompact
+  LocalFileTimeToFileTime=kPrf2Wrap_LocalFileTimeToFileTime
+  LocalFlags=kPrf2Wrap_LocalFlags
+  LocalFree=kPrf2Wrap_LocalFree
+  LocalHandle=kPrf2Wrap_LocalHandle
+  LocalLock=kPrf2Wrap_LocalLock
+  LocalReAlloc=kPrf2Wrap_LocalReAlloc
+  LocalShrink=kPrf2Wrap_LocalShrink
+  LocalSize=kPrf2Wrap_LocalSize
+  LocalUnlock=kPrf2Wrap_LocalUnlock
+  LockFile=kPrf2Wrap_LockFile
+  LockFileEx=kPrf2Wrap_LockFileEx
+  LockResource=kPrf2Wrap_LockResource
+  MapUserPhysicalPages=kPrf2Wrap_MapUserPhysicalPages
+  MapUserPhysicalPagesScatter=kPrf2Wrap_MapUserPhysicalPagesScatter
+  MapViewOfFile=kPrf2Wrap_MapViewOfFile
+  MapViewOfFileEx=kPrf2Wrap_MapViewOfFileEx
+  Module32First=kPrf2Wrap_Module32First
+  Module32FirstW=kPrf2Wrap_Module32FirstW
+  Module32Next=kPrf2Wrap_Module32Next
+  Module32NextW=kPrf2Wrap_Module32NextW
+  MoveFileA=kPrf2Wrap_MoveFileA
+  MoveFileExA=kPrf2Wrap_MoveFileExA
+  MoveFileExW=kPrf2Wrap_MoveFileExW
+  MoveFileW=kPrf2Wrap_MoveFileW
+  MoveFileWithProgressA=kPrf2Wrap_MoveFileWithProgressA
+  MoveFileWithProgressW=kPrf2Wrap_MoveFileWithProgressW
+  MulDiv=kPrf2Wrap_MulDiv
+  MultiByteToWideChar=kPrf2Wrap_MultiByteToWideChar
+  NeedCurrentDirectoryForExePathA=kPrf2Wrap_NeedCurrentDirectoryForExePathA
+  NeedCurrentDirectoryForExePathW=kPrf2Wrap_NeedCurrentDirectoryForExePathW
+  OpenEventA=kPrf2Wrap_OpenEventA
+  OpenEventW=kPrf2Wrap_OpenEventW
+  OpenFile=kPrf2Wrap_OpenFile
+  OpenFileMappingA=kPrf2Wrap_OpenFileMappingA
+  OpenFileMappingW=kPrf2Wrap_OpenFileMappingW
+  OpenJobObjectA=kPrf2Wrap_OpenJobObjectA
+  OpenJobObjectW=kPrf2Wrap_OpenJobObjectW
+  OpenMutexA=kPrf2Wrap_OpenMutexA
+  OpenMutexW=kPrf2Wrap_OpenMutexW
+  OpenProcess=kPrf2Wrap_OpenProcess
+  OpenSemaphoreA=kPrf2Wrap_OpenSemaphoreA
+  OpenSemaphoreW=kPrf2Wrap_OpenSemaphoreW
+  OpenThread=kPrf2Wrap_OpenThread
+  OpenWaitableTimerA=kPrf2Wrap_OpenWaitableTimerA
+  OpenWaitableTimerW=kPrf2Wrap_OpenWaitableTimerW
+  OutputDebugStringA=kPrf2Wrap_OutputDebugStringA
+  OutputDebugStringW=kPrf2Wrap_OutputDebugStringW
+  PeekConsoleInputA=kPrf2Wrap_PeekConsoleInputA
+  PeekConsoleInputW=kPrf2Wrap_PeekConsoleInputW
+  PeekNamedPipe=kPrf2Wrap_PeekNamedPipe
+  PostQueuedCompletionStatus=kPrf2Wrap_PostQueuedCompletionStatus
+  PrepareTape=kPrf2Wrap_PrepareTape
+  Process32First=kPrf2Wrap_Process32First
+  Process32FirstW=kPrf2Wrap_Process32FirstW
+  Process32Next=kPrf2Wrap_Process32Next
+  Process32NextW=kPrf2Wrap_Process32NextW
+  ProcessIdToSessionId=kPrf2Wrap_ProcessIdToSessionId
+  PulseEvent=kPrf2Wrap_PulseEvent
+  PurgeComm=kPrf2Wrap_PurgeComm
+  QueryActCtxW=kPrf2Wrap_QueryActCtxW
+  QueryDepthSList=kPrf2Wrap_QueryDepthSList
+  QueryDosDeviceA=kPrf2Wrap_QueryDosDeviceA
+  QueryDosDeviceW=kPrf2Wrap_QueryDosDeviceW
+  QueryInformationJobObject=kPrf2Wrap_QueryInformationJobObject
+  QueryMemoryResourceNotification=kPrf2Wrap_QueryMemoryResourceNotification
+  QueryPerformanceCounter=kPrf2Wrap_QueryPerformanceCounter
+  QueryPerformanceFrequency=kPrf2Wrap_QueryPerformanceFrequency
+  QueueUserAPC=kPrf2Wrap_QueueUserAPC
+  QueueUserWorkItem=kPrf2Wrap_QueueUserWorkItem
+  RaiseException=kPrf2Wrap_RaiseException
+  ReOpenFile=kPrf2Wrap_ReOpenFile
+  ReadConsoleA=kPrf2Wrap_ReadConsoleA
+  ReadConsoleInputA=kPrf2Wrap_ReadConsoleInputA
+  ReadConsoleInputW=kPrf2Wrap_ReadConsoleInputW
+  ReadConsoleOutputA=kPrf2Wrap_ReadConsoleOutputA
+  ReadConsoleOutputAttribute=kPrf2Wrap_ReadConsoleOutputAttribute
+  ReadConsoleOutputCharacterA=kPrf2Wrap_ReadConsoleOutputCharacterA
+  ReadConsoleOutputCharacterW=kPrf2Wrap_ReadConsoleOutputCharacterW
+  ReadConsoleOutputW=kPrf2Wrap_ReadConsoleOutputW
+  ReadConsoleW=kPrf2Wrap_ReadConsoleW
+  ReadDirectoryChangesW=kPrf2Wrap_ReadDirectoryChangesW
+  ReadFile=kPrf2Wrap_ReadFile
+  ReadFileEx=kPrf2Wrap_ReadFileEx
+  ReadFileScatter=kPrf2Wrap_ReadFileScatter
+  ReadProcessMemory=kPrf2Wrap_ReadProcessMemory
+  RegisterWaitForSingleObject=kPrf2Wrap_RegisterWaitForSingleObject
+  RegisterWaitForSingleObjectEx=kPrf2Wrap_RegisterWaitForSingleObjectEx
+  ReleaseActCtx=kPrf2Wrap_ReleaseActCtx
+  ReleaseMutex=kPrf2Wrap_ReleaseMutex
+  ReleaseSemaphore=kPrf2Wrap_ReleaseSemaphore
+  RemoveDirectoryA=kPrf2Wrap_RemoveDirectoryA
+  RemoveDirectoryW=kPrf2Wrap_RemoveDirectoryW
+  RemoveVectoredContinueHandler=kPrf2Wrap_RemoveVectoredContinueHandler
+  RemoveVectoredExceptionHandler=kPrf2Wrap_RemoveVectoredExceptionHandler
+  ReplaceFile=kPrf2Wrap_ReplaceFile
+  ReplaceFileA=kPrf2Wrap_ReplaceFileA
+  ReplaceFileW=kPrf2Wrap_ReplaceFileW
+  RequestDeviceWakeup=kPrf2Wrap_RequestDeviceWakeup
+  RequestWakeupLatency=kPrf2Wrap_RequestWakeupLatency
+  ResetEvent=kPrf2Wrap_ResetEvent
+  ResetWriteWatch=kPrf2Wrap_ResetWriteWatch
+  RestoreLastError=kPrf2Wrap_RestoreLastError
+  ResumeThread=kPrf2Wrap_ResumeThread
+  RtlAddFunctionTable=kPrf2Wrap_RtlAddFunctionTable
+  RtlCaptureContext=kPrf2Wrap_RtlCaptureContext
+  RtlCaptureStackBackTrace=kPrf2Wrap_RtlCaptureStackBackTrace
+  RtlCompareMemory=kPrf2Wrap_RtlCompareMemory
+  RtlDeleteFunctionTable=kPrf2Wrap_RtlDeleteFunctionTable
+  RtlFillMemory=kPrf2Wrap_RtlFillMemory
+  RtlInstallFunctionTableCallback=kPrf2Wrap_RtlInstallFunctionTableCallback
+  RtlLookupFunctionEntry=kPrf2Wrap_RtlLookupFunctionEntry
+  RtlMoveMemory=kPrf2Wrap_RtlMoveMemory
+  RtlPcToFileHeader=kPrf2Wrap_RtlPcToFileHeader
+  RtlRaiseException=kPrf2Wrap_RtlRaiseException
+  RtlRestoreContext=kPrf2Wrap_RtlRestoreContext
+  RtlUnwind=kPrf2Wrap_RtlUnwind
+  RtlUnwindEx=kPrf2Wrap_RtlUnwindEx
+  RtlVirtualUnwind=kPrf2Wrap_RtlVirtualUnwind
+  RtlZeroMemory=kPrf2Wrap_RtlZeroMemory
+  ScrollConsoleScreenBufferA=kPrf2Wrap_ScrollConsoleScreenBufferA
+  ScrollConsoleScreenBufferW=kPrf2Wrap_ScrollConsoleScreenBufferW
+  SearchPathA=kPrf2Wrap_SearchPathA
+  SearchPathW=kPrf2Wrap_SearchPathW
+  SetCalendarInfoA=kPrf2Wrap_SetCalendarInfoA
+  SetCalendarInfoW=kPrf2Wrap_SetCalendarInfoW
+  SetCommBreak=kPrf2Wrap_SetCommBreak
+  SetCommConfig=kPrf2Wrap_SetCommConfig
+  SetCommMask=kPrf2Wrap_SetCommMask
+  SetCommState=kPrf2Wrap_SetCommState
+  SetCommTimeouts=kPrf2Wrap_SetCommTimeouts
+  SetComputerNameA=kPrf2Wrap_SetComputerNameA
+  SetComputerNameExA=kPrf2Wrap_SetComputerNameExA
+  SetComputerNameExW=kPrf2Wrap_SetComputerNameExW
+  SetComputerNameW=kPrf2Wrap_SetComputerNameW
+  SetConsoleActiveScreenBuffer=kPrf2Wrap_SetConsoleActiveScreenBuffer
+  SetConsoleCP=kPrf2Wrap_SetConsoleCP
+  SetConsoleCtrlHandler=kPrf2Wrap_SetConsoleCtrlHandler
+  SetConsoleCursor=kPrf2Wrap_SetConsoleCursor
+  SetConsoleCursorInfo=kPrf2Wrap_SetConsoleCursorInfo
+  SetConsoleCursorPosition=kPrf2Wrap_SetConsoleCursorPosition
+  SetConsoleMode=kPrf2Wrap_SetConsoleMode
+  SetConsoleOutputCP=kPrf2Wrap_SetConsoleOutputCP
+  SetConsoleScreenBufferSize=kPrf2Wrap_SetConsoleScreenBufferSize
+  SetConsoleTextAttribute=kPrf2Wrap_SetConsoleTextAttribute
+  SetConsoleTitleA=kPrf2Wrap_SetConsoleTitleA
+  SetConsoleTitleW=kPrf2Wrap_SetConsoleTitleW
+  SetConsoleWindowInfo=kPrf2Wrap_SetConsoleWindowInfo
+  SetCriticalSectionSpinCount=kPrf2Wrap_SetCriticalSectionSpinCount
+  SetCurrentDirectoryA=kPrf2Wrap_SetCurrentDirectoryA
+  SetCurrentDirectoryW=kPrf2Wrap_SetCurrentDirectoryW
+  SetDefaultCommConfigA=kPrf2Wrap_SetDefaultCommConfigA
+  SetDefaultCommConfigW=kPrf2Wrap_SetDefaultCommConfigW
+  SetDllDirectoryA=kPrf2Wrap_SetDllDirectoryA
+  SetDllDirectoryW=kPrf2Wrap_SetDllDirectoryW
+  SetEndOfFile=kPrf2Wrap_SetEndOfFile
+  SetEnvironmentStringsA=kPrf2Wrap_SetEnvironmentStringsA
+  SetEnvironmentStringsW=kPrf2Wrap_SetEnvironmentStringsW
+  SetEnvironmentVariableA=kPrf2Wrap_SetEnvironmentVariableA
+  SetEnvironmentVariableW=kPrf2Wrap_SetEnvironmentVariableW
+  SetErrorMode=kPrf2Wrap_SetErrorMode
+  SetEvent=kPrf2Wrap_SetEvent
+  SetFileApisToANSI=kPrf2Wrap_SetFileApisToANSI
+  SetFileApisToOEM=kPrf2Wrap_SetFileApisToOEM
+  SetFileAttributesA=kPrf2Wrap_SetFileAttributesA
+  SetFileAttributesW=kPrf2Wrap_SetFileAttributesW
+  SetFilePointer=kPrf2Wrap_SetFilePointer
+  SetFilePointerEx=kPrf2Wrap_SetFilePointerEx
+  SetFileShortNameA=kPrf2Wrap_SetFileShortNameA
+  SetFileShortNameW=kPrf2Wrap_SetFileShortNameW
+  SetFileTime=kPrf2Wrap_SetFileTime
+  SetFileValidData=kPrf2Wrap_SetFileValidData
+  SetFirmwareEnvironmentVariableA=kPrf2Wrap_SetFirmwareEnvironmentVariableA
+  SetFirmwareEnvironmentVariableW=kPrf2Wrap_SetFirmwareEnvironmentVariableW
+  SetHandleCount=kPrf2Wrap_SetHandleCount
+  SetHandleInformation=kPrf2Wrap_SetHandleInformation
+  SetInformationJobObject=kPrf2Wrap_SetInformationJobObject
+  SetLastError=kPrf2Wrap_SetLastError
+  SetLocalTime=kPrf2Wrap_SetLocalTime
+  SetLocaleInfoA=kPrf2Wrap_SetLocaleInfoA
+  SetLocaleInfoW=kPrf2Wrap_SetLocaleInfoW
+  SetMailslotInfo=kPrf2Wrap_SetMailslotInfo
+  SetMessageWaitingIndicator=kPrf2Wrap_SetMessageWaitingIndicator
+  SetNamedPipeHandleState=kPrf2Wrap_SetNamedPipeHandleState
+  SetPriorityClass=kPrf2Wrap_SetPriorityClass
+  SetProcessAffinityMask=kPrf2Wrap_SetProcessAffinityMask
+  SetProcessPriorityBoost=kPrf2Wrap_SetProcessPriorityBoost
+  SetProcessShutdownParameters=kPrf2Wrap_SetProcessShutdownParameters
+  SetProcessWorkingSetSize=kPrf2Wrap_SetProcessWorkingSetSize
+  SetProcessWorkingSetSizeEx=kPrf2Wrap_SetProcessWorkingSetSizeEx
+  SetStdHandle=kPrf2Wrap_SetStdHandle
+  SetSystemFileCacheSize=kPrf2Wrap_SetSystemFileCacheSize
+  SetSystemPowerState=kPrf2Wrap_SetSystemPowerState
+  SetSystemTime=kPrf2Wrap_SetSystemTime
+  SetSystemTimeAdjustment=kPrf2Wrap_SetSystemTimeAdjustment
+  SetTapeParameters=kPrf2Wrap_SetTapeParameters
+  SetTapePosition=kPrf2Wrap_SetTapePosition
+  SetThreadAffinityMask=kPrf2Wrap_SetThreadAffinityMask
+  SetThreadContext=kPrf2Wrap_SetThreadContext
+  SetThreadExecutionState=kPrf2Wrap_SetThreadExecutionState
+  SetThreadIdealProcessor=kPrf2Wrap_SetThreadIdealProcessor
+  SetThreadLocale=kPrf2Wrap_SetThreadLocale
+  SetThreadPriority=kPrf2Wrap_SetThreadPriority
+  SetThreadPriorityBoost=kPrf2Wrap_SetThreadPriorityBoost
+  SetThreadStackGuarantee=kPrf2Wrap_SetThreadStackGuarantee
+  SetTimeZoneInformation=kPrf2Wrap_SetTimeZoneInformation
+  SetTimerQueueTimer=kPrf2Wrap_SetTimerQueueTimer
+  SetUnhandledExceptionFilter=kPrf2Wrap_SetUnhandledExceptionFilter
+  SetUserGeoID=kPrf2Wrap_SetUserGeoID
+  SetVolumeLabelA=kPrf2Wrap_SetVolumeLabelA
+  SetVolumeLabelW=kPrf2Wrap_SetVolumeLabelW
+  SetVolumeMountPointA=kPrf2Wrap_SetVolumeMountPointA
+  SetVolumeMountPointW=kPrf2Wrap_SetVolumeMountPointW
+  SetWaitableTimer=kPrf2Wrap_SetWaitableTimer
+  SetupComm=kPrf2Wrap_SetupComm
+  SignalObjectAndWait=kPrf2Wrap_SignalObjectAndWait
+  SizeofResource=kPrf2Wrap_SizeofResource
+  Sleep=kPrf2Wrap_Sleep
+  SleepEx=kPrf2Wrap_SleepEx
+  SuspendThread=kPrf2Wrap_SuspendThread
+  SwitchToFiber=kPrf2Wrap_SwitchToFiber
+  SwitchToThread=kPrf2Wrap_SwitchToThread
+  SystemTimeToFileTime=kPrf2Wrap_SystemTimeToFileTime
+  SystemTimeToTzSpecificLocalTime=kPrf2Wrap_SystemTimeToTzSpecificLocalTime
+  TerminateJobObject=kPrf2Wrap_TerminateJobObject
+  TerminateProcess=kPrf2Wrap_TerminateProcess
+  TerminateThread=kPrf2Wrap_TerminateThread
+  Thread32First=kPrf2Wrap_Thread32First
+  Thread32Next=kPrf2Wrap_Thread32Next
+  TlsAlloc=kPrf2Wrap_TlsAlloc
+  TlsFree=kPrf2Wrap_TlsFree
+  TlsGetValue=kPrf2Wrap_TlsGetValue
+  TlsSetValue=kPrf2Wrap_TlsSetValue
+  Toolhelp32ReadProcessMemory=kPrf2Wrap_Toolhelp32ReadProcessMemory
+  TransactNamedPipe=kPrf2Wrap_TransactNamedPipe
+  TransmitCommChar=kPrf2Wrap_TransmitCommChar
+  TryEnterCriticalSection=kPrf2Wrap_TryEnterCriticalSection
+  TzSpecificLocalTimeToSystemTime=kPrf2Wrap_TzSpecificLocalTimeToSystemTime
+  UnhandledExceptionFilter=kPrf2Wrap_UnhandledExceptionFilter
+  UnlockFile=kPrf2Wrap_UnlockFile
+  UnlockFileEx=kPrf2Wrap_UnlockFileEx
+  UnmapViewOfFile=kPrf2Wrap_UnmapViewOfFile
+  UnregisterWait=kPrf2Wrap_UnregisterWait
+  UnregisterWaitEx=kPrf2Wrap_UnregisterWaitEx
+  UpdateResourceA=kPrf2Wrap_UpdateResourceA
+  UpdateResourceW=kPrf2Wrap_UpdateResourceW
+  VerLanguageNameA=kPrf2Wrap_VerLanguageNameA
+  VerLanguageNameW=kPrf2Wrap_VerLanguageNameW
+  VerSetConditionMask=kPrf2Wrap_VerSetConditionMask
+  VerifyVersionInfoA=kPrf2Wrap_VerifyVersionInfoA
+  VerifyVersionInfoW=kPrf2Wrap_VerifyVersionInfoW
+  VirtualAlloc=kPrf2Wrap_VirtualAlloc
+  VirtualAllocEx=kPrf2Wrap_VirtualAllocEx
+  VirtualFree=kPrf2Wrap_VirtualFree
+  VirtualFreeEx=kPrf2Wrap_VirtualFreeEx
+  VirtualLock=kPrf2Wrap_VirtualLock
+  VirtualProtect=kPrf2Wrap_VirtualProtect
+  VirtualProtectEx=kPrf2Wrap_VirtualProtectEx
+  VirtualQuery=kPrf2Wrap_VirtualQuery
+  VirtualQueryEx=kPrf2Wrap_VirtualQueryEx
+  VirtualUnlock=kPrf2Wrap_VirtualUnlock
+  WTSGetActiveConsoleSessionId=kPrf2Wrap_WTSGetActiveConsoleSessionId
+  WaitCommEvent=kPrf2Wrap_WaitCommEvent
+  WaitForDebugEvent=kPrf2Wrap_WaitForDebugEvent
+  WaitForMultipleObjects=kPrf2Wrap_WaitForMultipleObjects
+  WaitForMultipleObjectsEx=kPrf2Wrap_WaitForMultipleObjectsEx
+  WaitForSingleObject=kPrf2Wrap_WaitForSingleObject
+  WaitForSingleObjectEx=kPrf2Wrap_WaitForSingleObjectEx
+  WaitNamedPipeA=kPrf2Wrap_WaitNamedPipeA
+  WaitNamedPipeW=kPrf2Wrap_WaitNamedPipeW
+  WideCharToMultiByte=kPrf2Wrap_WideCharToMultiByte
+  WinExec=kPrf2Wrap_WinExec
+  Wow64DisableWow64FsRedirection=kPrf2Wrap_Wow64DisableWow64FsRedirection
+  Wow64EnableWow64FsRedirection=kPrf2Wrap_Wow64EnableWow64FsRedirection
+  Wow64RevertWow64FsRedirection=kPrf2Wrap_Wow64RevertWow64FsRedirection
+  WriteConsoleA=kPrf2Wrap_WriteConsoleA
+  WriteConsoleInputA=kPrf2Wrap_WriteConsoleInputA
+  WriteConsoleInputW=kPrf2Wrap_WriteConsoleInputW
+  WriteConsoleOutputA=kPrf2Wrap_WriteConsoleOutputA
+  WriteConsoleOutputAttribute=kPrf2Wrap_WriteConsoleOutputAttribute
+  WriteConsoleOutputCharacterA=kPrf2Wrap_WriteConsoleOutputCharacterA
+  WriteConsoleOutputCharacterW=kPrf2Wrap_WriteConsoleOutputCharacterW
+  WriteConsoleOutputW=kPrf2Wrap_WriteConsoleOutputW
+  WriteConsoleW=kPrf2Wrap_WriteConsoleW
+  WriteFile=kPrf2Wrap_WriteFile
+  WriteFileEx=kPrf2Wrap_WriteFileEx
+  WriteFileGather=kPrf2Wrap_WriteFileGather
+  WritePrivateProfileSectionA=kPrf2Wrap_WritePrivateProfileSectionA
+  WritePrivateProfileSectionW=kPrf2Wrap_WritePrivateProfileSectionW
+  WritePrivateProfileStringA=kPrf2Wrap_WritePrivateProfileStringA
+  WritePrivateProfileStringW=kPrf2Wrap_WritePrivateProfileStringW
+  WritePrivateProfileStructA=kPrf2Wrap_WritePrivateProfileStructA
+  WritePrivateProfileStructW=kPrf2Wrap_WritePrivateProfileStructW
+  WriteProcessMemory=kPrf2Wrap_WriteProcessMemory
+  WriteProfileSectionA=kPrf2Wrap_WriteProfileSectionA
+  WriteProfileSectionW=kPrf2Wrap_WriteProfileSectionW
+  WriteProfileStringA=kPrf2Wrap_WriteProfileStringA
+  WriteProfileStringW=kPrf2Wrap_WriteProfileStringW
+  WriteTapemark=kPrf2Wrap_WriteTapemark
+  ZombifyActCtx=kPrf2Wrap_ZombifyActCtx
+  _hread=kPrf2Wrap__hread
+  _hwrite=kPrf2Wrap__hwrite
+  _lclose=kPrf2Wrap__lclose
+  _lcreat=kPrf2Wrap__lcreat
+  _llseek=kPrf2Wrap__llseek
+  _lopen=kPrf2Wrap__lopen
+  _lread=kPrf2Wrap__lread
+  _lwrite=kPrf2Wrap__lwrite
+  lstrcat=kPrf2Wrap_lstrcat
+  lstrcatA=kPrf2Wrap_lstrcatA
+  lstrcatW=kPrf2Wrap_lstrcatW
+  lstrcmp=kPrf2Wrap_lstrcmp
+  lstrcmpA=kPrf2Wrap_lstrcmpA
+  lstrcmpW=kPrf2Wrap_lstrcmpW
+  lstrcmpi=kPrf2Wrap_lstrcmpi
+  lstrcmpiA=kPrf2Wrap_lstrcmpiA
+  lstrcmpiW=kPrf2Wrap_lstrcmpiW
+  lstrcpy=kPrf2Wrap_lstrcpy
+  lstrcpyA=kPrf2Wrap_lstrcpyA
+  lstrcpyW=kPrf2Wrap_lstrcpyW
+  lstrcpyn=kPrf2Wrap_lstrcpyn
+  lstrcpynA=kPrf2Wrap_lstrcpynA
+  lstrcpynW=kPrf2Wrap_lstrcpynW
+  lstrlen=kPrf2Wrap_lstrlen
+  lstrlenA=kPrf2Wrap_lstrlenA
+  lstrlenW=kPrf2Wrap_lstrlenW
+  uaw_lstrcmpW=kPrf2Wrap_uaw_lstrcmpW
+  uaw_lstrcmpiW=kPrf2Wrap_uaw_lstrcmpiW
+  uaw_lstrlenW=kPrf2Wrap_uaw_lstrlenW
+  uaw_wcschr=kPrf2Wrap_uaw_wcschr
+  uaw_wcscpy=kPrf2Wrap_uaw_wcscpy
+  uaw_wcsicmp=kPrf2Wrap_uaw_wcsicmp
+  uaw_wcslen=kPrf2Wrap_uaw_wcslen
+  uaw_wcsrchr=kPrf2Wrap_uaw_wcsrchr
diff --git a/src/lib/kStuff/kProfiler2/kPrf2WinApiWrappersImp-x86.def b/src/lib/kStuff/kProfiler2/kPrf2WinApiWrappersImp-x86.def
new file mode 100644
index 0000000..c1ddf85
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrf2WinApiWrappersImp-x86.def
@@ -0,0 +1,1682 @@
+LIBRARY kPrf2WinApiWrappers
+EXPORTS
+_ActivateActCtx@8
+_ActivateActCtx@8
+_AddAtomA@4
+_AddAtomA@4
+_AddAtomW@4
+_AddAtomW@4
+_AddConsoleAliasA@12
+_AddConsoleAliasA@12
+_AddConsoleAliasW@12
+_AddConsoleAliasW@12
+_AddRefActCtx@4
+_AddRefActCtx@4
+_AddVectoredContinueHandler@8
+_AddVectoredContinueHandler@8
+_AddVectoredExceptionHandler@8
+_AddVectoredExceptionHandler@8
+_AllocConsole@0
+_AllocConsole@0
+_AllocateUserPhysicalPages@12
+_AllocateUserPhysicalPages@12
+_AreFileApisANSI@0
+_AreFileApisANSI@0
+_AssignProcessToJobObject@8
+_AssignProcessToJobObject@8
+_AttachConsole@4
+_AttachConsole@4
+_BackupRead@28
+_BackupRead@28
+_BackupSeek@24
+_BackupSeek@24
+_BackupWrite@28
+_BackupWrite@28
+_Beep@8
+_Beep@8
+_BeginUpdateResourceA@8
+_BeginUpdateResourceA@8
+_BeginUpdateResourceW@8
+_BeginUpdateResourceW@8
+_BindIoCompletionCallback@12
+_BindIoCompletionCallback@12
+_BuildCommDCBA@8
+_BuildCommDCBA@8
+_BuildCommDCBAndTimeoutsA@12
+_BuildCommDCBAndTimeoutsA@12
+_BuildCommDCBAndTimeoutsW@12
+_BuildCommDCBAndTimeoutsW@12
+_BuildCommDCBW@8
+_BuildCommDCBW@8
+_CallNamedPipeA@28
+_CallNamedPipeA@28
+_CallNamedPipeW@28
+_CallNamedPipeW@28
+_CancelDeviceWakeupRequest@4
+_CancelDeviceWakeupRequest@4
+_CancelIo@4
+_CancelIo@4
+_CancelTimerQueueTimer@8
+_CancelTimerQueueTimer@8
+_CancelWaitableTimer@4
+_CancelWaitableTimer@4
+_ChangeTimerQueueTimer@16
+_ChangeTimerQueueTimer@16
+_CheckNameLegalDOS8Dot3A@20
+_CheckNameLegalDOS8Dot3A@20
+_CheckNameLegalDOS8Dot3W@20
+_CheckNameLegalDOS8Dot3W@20
+_CheckRemoteDebuggerPresent@8
+_CheckRemoteDebuggerPresent@8
+_ClearCommBreak@4
+_ClearCommBreak@4
+_ClearCommError@12
+_ClearCommError@12
+_CloseHandle@4
+_CloseHandle@4
+_CommConfigDialogA@12
+_CommConfigDialogA@12
+_CommConfigDialogW@12
+_CommConfigDialogW@12
+_CompareFileTime@8
+_CompareFileTime@8
+_CompareStringA@24
+_CompareStringA@24
+_CompareStringW@24
+_CompareStringW@24
+_ConnectNamedPipe@8
+_ConnectNamedPipe@8
+_ContinueDebugEvent@12
+_ContinueDebugEvent@12
+_ConvertDefaultLocale@4
+_ConvertDefaultLocale@4
+_ConvertFiberToThread@0
+_ConvertFiberToThread@0
+_ConvertThreadToFiber@4
+_ConvertThreadToFiber@4
+_ConvertThreadToFiberEx@8
+_ConvertThreadToFiberEx@8
+_CopyFileA@12
+_CopyFileA@12
+_CopyFileExA@24
+_CopyFileExA@24
+_CopyFileExW@24
+_CopyFileExW@24
+_CopyFileW@12
+_CopyFileW@12
+_CreateActCtxA@4
+_CreateActCtxA@4
+_CreateActCtxW@4
+_CreateActCtxW@4
+_CreateConsoleScreenBuffer@20
+_CreateConsoleScreenBuffer@20
+_CreateDirectoryA@8
+_CreateDirectoryA@8
+_CreateDirectoryExA@12
+_CreateDirectoryExA@12
+_CreateDirectoryExW@12
+_CreateDirectoryExW@12
+_CreateDirectoryW@8
+_CreateDirectoryW@8
+_CreateEventA@16
+_CreateEventA@16
+_CreateEventW@16
+_CreateEventW@16
+_CreateFiber@12
+_CreateFiber@12
+_CreateFiberEx@20
+_CreateFiberEx@20
+_CreateFileA@28
+_CreateFileA@28
+_CreateFileMappingA@24
+_CreateFileMappingA@24
+_CreateFileMappingW@24
+_CreateFileMappingW@24
+_CreateFileW@28
+_CreateFileW@28
+_CreateHardLinkA@12
+_CreateHardLinkA@12
+_CreateHardLinkW@12
+_CreateHardLinkW@12
+_CreateIoCompletionPort@16
+_CreateIoCompletionPort@16
+_CreateJobObjectA@8
+_CreateJobObjectA@8
+_CreateJobObjectW@8
+_CreateJobObjectW@8
+_CreateJobSet@12
+_CreateJobSet@12
+_CreateMailslotA@16
+_CreateMailslotA@16
+_CreateMailslotW@16
+_CreateMailslotW@16
+_CreateMemoryResourceNotification@4
+_CreateMemoryResourceNotification@4
+_CreateMutexA@12
+_CreateMutexA@12
+_CreateMutexW@12
+_CreateMutexW@12
+_CreateNamedPipeA@32
+_CreateNamedPipeA@32
+_CreateNamedPipeW@32
+_CreateNamedPipeW@32
+_CreatePipe@16
+_CreatePipe@16
+_CreateProcessA@40
+_CreateProcessA@40
+_CreateProcessW@40
+_CreateProcessW@40
+_CreateRemoteThread@28
+_CreateRemoteThread@28
+_CreateSemaphoreA@16
+_CreateSemaphoreA@16
+_CreateSemaphoreW@16
+_CreateSemaphoreW@16
+_CreateTapePartition@16
+_CreateTapePartition@16
+_CreateThread@24
+_CreateThread@24
+_CreateTimerQueue@0
+_CreateTimerQueue@0
+_CreateTimerQueueTimer@28
+_CreateTimerQueueTimer@28
+_CreateToolhelp32Snapshot@8
+_CreateToolhelp32Snapshot@8
+_CreateWaitableTimerA@12
+_CreateWaitableTimerA@12
+_CreateWaitableTimerW@12
+_CreateWaitableTimerW@12
+_DeactivateActCtx@8
+_DeactivateActCtx@8
+_DebugActiveProcess@4
+_DebugActiveProcess@4
+_DebugActiveProcessStop@4
+_DebugActiveProcessStop@4
+_DebugBreak@0
+_DebugBreak@0
+_DebugBreakProcess@4
+_DebugBreakProcess@4
+_DebugSetProcessKillOnExit@4
+_DebugSetProcessKillOnExit@4
+_DecodePointer@4
+_DecodePointer@4
+_DecodeSystemPointer@4
+_DecodeSystemPointer@4
+_DefineDosDeviceA@12
+_DefineDosDeviceA@12
+_DefineDosDeviceW@12
+_DefineDosDeviceW@12
+_DeleteAtom@4
+_DeleteAtom@4
+_DeleteCriticalSection@4
+_DeleteCriticalSection@4
+_DeleteFiber@4
+_DeleteFiber@4
+_DeleteFileA@4
+_DeleteFileA@4
+_DeleteFileW@4
+_DeleteFileW@4
+_DeleteTimerQueue@4
+_DeleteTimerQueue@4
+_DeleteTimerQueueEx@8
+_DeleteTimerQueueEx@8
+_DeleteTimerQueueTimer@12
+_DeleteTimerQueueTimer@12
+_DeleteVolumeMountPointA@4
+_DeleteVolumeMountPointA@4
+_DeleteVolumeMountPointW@4
+_DeleteVolumeMountPointW@4
+_DeviceIoControl@32
+_DeviceIoControl@32
+_DisableThreadLibraryCalls@4
+_DisableThreadLibraryCalls@4
+_DisconnectNamedPipe@4
+_DisconnectNamedPipe@4
+_DnsHostnameToComputerNameA@12
+_DnsHostnameToComputerNameA@12
+_DnsHostnameToComputerNameW@12
+_DnsHostnameToComputerNameW@12
+_DosDateTimeToFileTime@12
+_DosDateTimeToFileTime@12
+_DuplicateHandle@28
+_DuplicateHandle@28
+_EncodePointer@4
+_EncodePointer@4
+_EncodeSystemPointer@4
+_EncodeSystemPointer@4
+_EndUpdateResourceA@8
+_EndUpdateResourceA@8
+_EndUpdateResourceW@8
+_EndUpdateResourceW@8
+_EnterCriticalSection@4
+_EnterCriticalSection@4
+_EnumCalendarInfoA@16
+_EnumCalendarInfoA@16
+_EnumCalendarInfoExA@16
+_EnumCalendarInfoExA@16
+_EnumCalendarInfoExW@16
+_EnumCalendarInfoExW@16
+_EnumCalendarInfoW@16
+_EnumCalendarInfoW@16
+_EnumDateFormatsA@12
+_EnumDateFormatsA@12
+_EnumDateFormatsExA@12
+_EnumDateFormatsExA@12
+_EnumDateFormatsExW@12
+_EnumDateFormatsExW@12
+_EnumDateFormatsW@12
+_EnumDateFormatsW@12
+_EnumLanguageGroupLocalesA@16
+_EnumLanguageGroupLocalesA@16
+_EnumLanguageGroupLocalesW@16
+_EnumLanguageGroupLocalesW@16
+_EnumResourceLanguagesA@20
+_EnumResourceLanguagesA@20
+_EnumResourceLanguagesW@20
+_EnumResourceLanguagesW@20
+_EnumResourceNamesA@16
+_EnumResourceNamesA@16
+_EnumResourceNamesW@16
+_EnumResourceNamesW@16
+_EnumResourceTypesA@12
+_EnumResourceTypesA@12
+_EnumResourceTypesW@12
+_EnumResourceTypesW@12
+_EnumSystemCodePagesA@8
+_EnumSystemCodePagesA@8
+_EnumSystemCodePagesW@8
+_EnumSystemCodePagesW@8
+_EnumSystemFirmwareTables@12
+_EnumSystemFirmwareTables@12
+_EnumSystemGeoID@12
+_EnumSystemGeoID@12
+_EnumSystemLanguageGroupsA@12
+_EnumSystemLanguageGroupsA@12
+_EnumSystemLanguageGroupsW@12
+_EnumSystemLanguageGroupsW@12
+_EnumSystemLocalesA@8
+_EnumSystemLocalesA@8
+_EnumSystemLocalesW@8
+_EnumSystemLocalesW@8
+_EnumTimeFormatsA@12
+_EnumTimeFormatsA@12
+_EnumTimeFormatsW@12
+_EnumTimeFormatsW@12
+_EnumUILanguagesA@12
+_EnumUILanguagesA@12
+_EnumUILanguagesW@12
+_EnumUILanguagesW@12
+_EraseTape@12
+_EraseTape@12
+_EscapeCommFunction@8
+_EscapeCommFunction@8
+_ExitProcess@4
+_ExitProcess@4
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+_SetConsoleScreenBufferSize@8
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+_SetConsoleTitleA@4
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+_SetConsoleWindowInfo@12
+_SetConsoleWindowInfo@12
+_SetCriticalSectionSpinCount@8
+_SetCriticalSectionSpinCount@8
+_SetCurrentDirectoryA@4
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+_SetCurrentDirectoryW@4
+_SetCurrentDirectoryW@4
+_SetDefaultCommConfigA@12
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+_SetDefaultCommConfigW@12
+_SetDllDirectoryA@4
+_SetDllDirectoryA@4
+_SetDllDirectoryW@4
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+_SetEnvironmentStringsA@4
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+_SetEnvironmentVariableW@8
+_SetErrorMode@4
+_SetErrorMode@4
+_SetEvent@4
+_SetEvent@4
+_SetFileApisToANSI@0
+_SetFileApisToANSI@0
+_SetFileApisToOEM@0
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+_SetFileValidData@12
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+_SetFirmwareEnvironmentVariableA@16
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+_SetFirmwareEnvironmentVariableW@16
+_SetHandleCount@4
+_SetHandleCount@4
+_SetHandleInformation@12
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+_SetInformationJobObject@16
+_SetInformationJobObject@16
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+_SetLastError@4
+_SetLocalTime@4
+_SetLocalTime@4
+_SetLocaleInfoA@12
+_SetLocaleInfoA@12
+_SetLocaleInfoW@12
+_SetLocaleInfoW@12
+_SetMailslotInfo@8
+_SetMailslotInfo@8
+_SetMessageWaitingIndicator@8
+_SetMessageWaitingIndicator@8
+_SetNamedPipeHandleState@16
+_SetNamedPipeHandleState@16
+_SetPriorityClass@8
+_SetPriorityClass@8
+_SetProcessAffinityMask@8
+_SetProcessAffinityMask@8
+_SetProcessPriorityBoost@8
+_SetProcessPriorityBoost@8
+_SetProcessShutdownParameters@8
+_SetProcessShutdownParameters@8
+_SetProcessWorkingSetSize@12
+_SetProcessWorkingSetSize@12
+_SetProcessWorkingSetSizeEx@16
+_SetProcessWorkingSetSizeEx@16
+_SetStdHandle@8
+_SetStdHandle@8
+_SetSystemFileCacheSize@12
+_SetSystemFileCacheSize@12
+_SetSystemPowerState@8
+_SetSystemPowerState@8
+_SetSystemTime@4
+_SetSystemTime@4
+_SetSystemTimeAdjustment@8
+_SetSystemTimeAdjustment@8
+_SetTapeParameters@12
+_SetTapeParameters@12
+_SetTapePosition@24
+_SetTapePosition@24
+_SetThreadAffinityMask@8
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+_SetThreadContext@8
+_SetThreadExecutionState@4
+_SetThreadExecutionState@4
+_SetThreadIdealProcessor@8
+_SetThreadIdealProcessor@8
+_SetThreadLocale@4
+_SetThreadLocale@4
+_SetThreadPriority@8
+_SetThreadPriority@8
+_SetThreadPriorityBoost@8
+_SetThreadPriorityBoost@8
+_SetThreadStackGuarantee@4
+_SetThreadStackGuarantee@4
+_SetTimeZoneInformation@4
+_SetTimeZoneInformation@4
+_SetTimerQueueTimer@24
+_SetTimerQueueTimer@24
+_SetUnhandledExceptionFilter@4
+_SetUnhandledExceptionFilter@4
+_SetUserGeoID@4
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+_SetVolumeLabelA@8
+_SetVolumeLabelA@8
+_SetVolumeLabelW@8
+_SetVolumeLabelW@8
+_SetVolumeMountPointA@8
+_SetVolumeMountPointA@8
+_SetVolumeMountPointW@8
+_SetVolumeMountPointW@8
+_SetWaitableTimer@24
+_SetWaitableTimer@24
+_SetupComm@12
+_SetupComm@12
+_SignalObjectAndWait@16
+_SignalObjectAndWait@16
+_SizeofResource@8
+_SizeofResource@8
+_Sleep@4
+_Sleep@4
+_SleepEx@8
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+_SuspendThread@4
+_SuspendThread@4
+_SwitchToFiber@4
+_SwitchToFiber@4
+_SwitchToThread@0
+_SwitchToThread@0
+_SystemTimeToFileTime@8
+_SystemTimeToFileTime@8
+_SystemTimeToTzSpecificLocalTime@12
+_SystemTimeToTzSpecificLocalTime@12
+_TerminateJobObject@8
+_TerminateJobObject@8
+_TerminateProcess@8
+_TerminateProcess@8
+_TerminateThread@8
+_TerminateThread@8
+_Thread32First@8
+_Thread32First@8
+_Thread32Next@8
+_Thread32Next@8
+_TlsAlloc@0
+_TlsAlloc@0
+_TlsFree@4
+_TlsFree@4
+_TlsGetValue@4
+_TlsGetValue@4
+_TlsSetValue@8
+_TlsSetValue@8
+_Toolhelp32ReadProcessMemory@20
+_Toolhelp32ReadProcessMemory@20
+_TransactNamedPipe@28
+_TransactNamedPipe@28
+_TransmitCommChar@8
+_TransmitCommChar@8
+_TryEnterCriticalSection@4
+_TryEnterCriticalSection@4
+_TzSpecificLocalTimeToSystemTime@12
+_TzSpecificLocalTimeToSystemTime@12
+_UnhandledExceptionFilter@4
+_UnhandledExceptionFilter@4
+_UnlockFile@20
+_UnlockFile@20
+_UnlockFileEx@20
+_UnlockFileEx@20
+_UnmapViewOfFile@4
+_UnmapViewOfFile@4
+_UnregisterWait@4
+_UnregisterWait@4
+_UnregisterWaitEx@8
+_UnregisterWaitEx@8
+_UpdateResourceA@24
+_UpdateResourceA@24
+_UpdateResourceW@24
+_UpdateResourceW@24
+_VerLanguageNameA@12
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+_VerSetConditionMask@16
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+_VirtualUnlock@8
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+_WTSGetActiveConsoleSessionId@0
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+_WaitNamedPipeA@8
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+_WaitNamedPipeW@8
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+_WideCharToMultiByte@32
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+_WinExec@8
+_WinExec@8
+_Wow64DisableWow64FsRedirection@4
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+_Wow64EnableWow64FsRedirection@4
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+_Wow64RevertWow64FsRedirection@4
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+_WriteConsoleA@20
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+_WritePrivateProfileStringA@16
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+_WriteProfileSectionA@8
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+_WriteProfileStringA@12
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+_ZombifyActCtx@4
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diff --git a/src/lib/kStuff/kProfiler2/kPrfReader.h b/src/lib/kStuff/kProfiler2/kPrfReader.h
new file mode 100644
index 0000000..0cb1683
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kPrfReader.h
@@ -0,0 +1,45 @@
+

+

+#include <string>

+

+typedef

+

+/**

+ * Debug info cache.

+ *

+ * An objects of this class acts a frontend to the low-level

+ * debug info readers.

+ */

+class kPrfDebugInfoCache

+{

+public:

+    kPrfDebugInfoCache(unsigned cMaxModules = ~0U);

+    ~kPrfDebugInfoCache();

+

+    /** Resolves a symbol in a specific module. */

+    int findSymbol();

+    int findLine();

+};

+

+/**

+ * Internal class which does the reader job behind the API / commandline tool.

+ */

+class kPrfReader

+{

+public:

+    kPrfReader(const char *pszDataSetPath);

+    ~kPrfReader();

+

+    /** Analyses the data set. */

+    int analyse(int fSomeOptionsIHaventFiguredOutYet);

+

+    /** Writes the analysis report as HTML. */

+    int reportAsHtml(FILE *pOut);

+

+    /** Dumps the data set in a raw fashion to the specified file stream. */

+    int dump(FILE *pOut);

+

+protected:

+    /** Pointer to the debug info cache object. */

+    kPrfDebugInfoCache *pDbgCache;

+};

diff --git a/src/lib/kStuff/kProfiler2/kProfileR3.cpp b/src/lib/kStuff/kProfiler2/kProfileR3.cpp
new file mode 100644
index 0000000..9e19ee6
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kProfileR3.cpp
@@ -0,0 +1,1666 @@
+/* $Id: kProfileR3.cpp 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kProfiler Mark 2 - The Ring-3 Implementation.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <k/kDefs.h>
+#if K_OS == K_OS_WINDOWS
+# include <windows.h>
+# include <psapi.h>
+# include <malloc.h>
+# if _MSC_VER >= 1400
+#  include <intrin.h>
+#  define HAVE_INTRIN
+# endif
+
+#elif K_OS == K_OS_LINUX || K_OS == K_OS_FREEBSD
+# define KPRF_USE_PTHREAD
+# include <pthread.h>
+# include <stdint.h>
+# define KPRF_USE_MMAN
+# include <sys/mman.h>
+# include <sys/fcntl.h>
+# include <unistd.h>
+# include <stdlib.h>
+# ifndef O_BINARY
+#  define O_BINARY 0
+# endif
+
+#elif K_OS == K_OS_OS2
+# define INCL_BASE
+# include <os2.h>
+# include <stdint.h>
+# include <sys/fmutex.h>
+
+#else
+# error "not ported to this OS..."
+#endif
+
+#include <k/kDefs.h>
+#include <k/kTypes.h>
+
+/*
+ * Instantiate the header.
+ */
+#define KPRF_NAME(Suffix)               KPrf##Suffix
+#define KPRF_TYPE(Prefix,Suffix)        Prefix##KPRF##Suffix
+#if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+# define KPRF_DECL_FUNC(type, name)     extern "C"  __declspec(dllexport) type __cdecl KPRF_NAME(name)
+#else
+# define KPRF_DECL_FUNC(type, name)     extern "C" type KPRF_NAME(name)
+#endif
+#if 1
+# ifdef __GNUC__
+#  define KPRF_ASSERT(expr) do { if (!(expr)) { __asm__ __volatile__("int3\n\tnop\n\t");} } while (0)
+# else
+#  define KPRF_ASSERT(expr) do { if (!(expr)) { __debugbreak(); } } while (0)
+# endif
+#else
+# define KPRF_ASSERT(expr) do { } while (0)
+#endif
+
+#include "prfcore.h.h"
+
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/** Mutex lock type. */
+#if defined(KPRF_USE_PTHREAD)
+typedef pthread_mutex_t     KPRF_TYPE(,MUTEX);
+#elif K_OS == K_OS_WINDOWS
+typedef CRITICAL_SECTION    KPRF_TYPE(,MUTEX);
+#elif K_OS == K_OS_OS2
+typedef struct _fmutex      KPRF_TYPE(,MUTEX);
+#endif
+/** Pointer to a mutex lock. */
+typedef KPRF_TYPE(,MUTEX)  *KPRF_TYPE(P,MUTEX);
+
+
+#if defined(KPRF_USE_PTHREAD)
+/** Read/Write lock type. */
+typedef pthread_rwlock_t    KPRF_TYPE(,RWLOCK);
+#elif K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+/** Read/Write lock state. */
+typedef enum KPRF_TYPE(,RWLOCKSTATE)
+{
+    RWLOCK_STATE_UNINITIALIZED = 0,
+    RWLOCK_STATE_SHARED,
+    RWLOCK_STATE_LOCKING,
+    RWLOCK_STATE_EXCLUSIVE,
+    RWLOCK_STATE_32BIT_HACK = 0x7fffffff
+} KPRF_TYPE(,RWLOCKSTATE);
+/** Update the state. */
+#define KPRF_RWLOCK_SETSTATE(pRWLock, enmNewState) \
+    kPrfAtomicSet32((volatile KU32 *)&(pRWLock)->enmState, (KU32)(enmNewState))
+
+/** Read/Write lock type. */
+typedef struct KPRF_TYPE(,RWLOCK)
+{
+    /** This mutex serialize the access and updating of the members
+     * of this structure. */
+    KPRF_TYPE(,MUTEX)       Mutex;
+    /** The current number of readers. */
+    KU32                    cReaders;
+    /** The number of readers waiting. */
+    KU32                    cReadersWaiting;
+    /** The current number of waiting writers. */
+    KU32                    cWritersWaiting;
+# if K_OS == K_OS_WINDOWS
+    /** The handle of the event object on which the waiting readers block. (manual reset). */
+    HANDLE                  hevReaders;
+    /** The handle of the event object on which the waiting writers block. (manual reset). */
+    HANDLE                  hevWriters;
+# elif K_OS == K_OS_OS2
+    /** The handle of the event semaphore on which the waiting readers block. */
+    HEV                     hevReaders;
+    /** The handle of the event semaphore on which the waiting writers block. */
+    HEV                     hevWriters;
+# endif
+    /** The current state of the read-write lock. */
+    KPRF_TYPE(,RWLOCKSTATE) enmState;
+} KPRF_TYPE(,RWLOCK);
+#endif
+/** Pointer to a Read/Write lock. */
+typedef KPRF_TYPE(,RWLOCK) *KPRF_TYPE(P,RWLOCK);
+
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** The TLS index / key. */
+#if K_OS == K_OS_WINDOWS
+static DWORD                g_dwThreadTLS = TLS_OUT_OF_INDEXES;
+
+#elif defined(KPRF_USE_PTHREAD)
+static pthread_key_t        g_ThreadKey = (pthread_key_t)-1;
+
+#elif K_OS == K_OS_OS2
+static KPRF_TYPE(P,THREAD) *g_ppThread = NULL;
+
+#else
+# error "Not ported to your OS - or you're missing the OS define(s)."
+#endif
+
+/** Pointer to the profiler header. */
+static KPRF_TYPE(P,HDR)     g_pHdr = NULL;
+#define KPRF_GET_HDR()                  g_pHdr
+
+/** Whether the profiler is enabled or not. */
+static bool                 g_fEnabled = false;
+#define KPRF_IS_ACTIVE()                g_fEnabled
+
+
+/** The mutex protecting the threads in g_pHdr. */
+static KPRF_TYPE(,MUTEX)   g_ThreadsMutex;
+
+/** The mutex protecting the module segments in g_pHdr. */
+static KPRF_TYPE(,MUTEX)   g_ModSegsMutex;
+
+/** The read-write lock protecting the functions in g_pHdr. */
+static KPRF_TYPE(,RWLOCK)  g_FunctionsRWLock;
+
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static KPRF_TYPE(P,THREAD) kPrfGetThreadAutoReg(void);
+#ifdef KPRF_USE_PTHREAD
+static void kPrfPThreadKeyDtor(void *pvThread);
+#endif
+
+
+/**
+ * Gets the pointer to the profiler data for the current thread.
+ *
+ * This implementation automatically adds unknown threads.
+ *
+ * @returns Pointer to the profiler thread data.
+ * @returns NULL if we're out of thread space.
+ */
+static inline KPRF_TYPE(P,THREAD) kPrfGetThread(void)
+{
+    KPRF_TYPE(P,THREAD) pThread;
+
+/* Win32/64 */
+#if K_OS == K_OS_WINDOWS
+    pThread = (KPRF_TYPE(P,THREAD))TlsGetValue(g_dwThreadTLS);
+
+/* Posix Threads */
+#elif defined(KPRF_USE_PTHREAD)
+    pThread = (KPRF_TYPE(P,THREAD))pthread_getspecific(g_ThreadKey);
+
+#elif K_OS == K_OS_OS2
+    pThread = *g_ppThread;
+
+#else
+# error not implemented
+#endif
+    if (!pThread)
+        pThread = kPrfGetThreadAutoReg();
+    return pThread;
+}
+#define KPRF_GET_THREAD()               kPrfGetThread()
+
+
+/**
+ * The the ID of the current thread.
+ *
+ * @returns The thread id.
+ */
+static inline KUPTR kPrfGetThreadId(void)
+{
+/* Win32/64 */
+#if K_OS == K_OS_WINDOWS
+    KUPTR ThreadId = (KUPTR)GetCurrentThreadId();
+
+/* Posix Threads */
+#elif defined(KPRF_USE_PTHREAD)
+    KUPTR ThreadId = (KUPTR)pthread_self();
+
+#elif K_OS == K_OS_OS2
+    PTIB pTib;
+    PPIB pPib;
+    DosGetInfoBlocks(&pTib, &pPib);
+    ThreadId = pTib->tib_ptib2->tib2_ultid;
+
+#else
+# error not implemented
+#endif
+
+    return ThreadId;
+}
+#define KPRF_GET_THREADID()             kPrfGetThreadId()
+
+
+/**
+ * The the ID of the current process.
+ *
+ * @returns The process id.
+ */
+static inline KUPTR kPrfGetProcessId(void)
+{
+/* Win32/64 */
+#if K_OS == K_OS_WINDOWS
+    KUPTR ThreadId = (KUPTR)GetProcessId(GetCurrentProcess());
+
+#elif K_OS == K_OS_OS2
+    PTIB pTib;
+    PPIB pPib;
+    DosGetInfoBlocks(&pTib, &pPib);
+    ThreadId = pPib->pib_pid;
+
+#else
+    KUPTR ThreadId = (KUPTR)getpid();
+#endif
+
+    return ThreadId;
+}
+#define KPRF_GET_PROCESSID()            kPrfGetProcessId()
+
+
+/**
+ * Sets the pointer to the profiler data for the current thread.
+ *
+ * We require fast access to the profiler thread data, so we store
+ * it in a TLS (thread local storage) item/key where the implementation
+ * allows that.
+ *
+ * @param   pThread         The pointer to the profiler thread data for the current thread.
+ */
+static inline void kPrfSetThread(KPRF_TYPE(P,THREAD) pThread)
+{
+/* Win32/64 */
+#if K_OS == K_OS_WINDOWS
+    BOOL fRc = TlsSetValue(g_dwThreadTLS, pThread);
+
+/* Posix Threads */
+#elif defined(KPRF_USE_PTHREAD)
+    int rc = pthread_setspecific(g_ThreadKey, pThread);
+
+#elif K_OS == K_OS_OS2
+    *g_ppThread = pThread;
+
+#else
+# error not implemented
+#endif
+}
+#define KPRF_SET_THREAD(pThread)        kPrfSetThread(pThread)
+
+
+/**
+ * Get the now timestamp.
+ * This must correspond to what the assembly code are doing.
+ */
+static inline KU64 kPrfNow(void)
+{
+#if defined(HAVE_INTRIN)
+    return __rdtsc();
+# else
+    union
+    {
+        KU64 u64;
+        struct
+        {
+            KU32 u32Lo;
+            KU32 u32Hi;
+        } s;
+    } u;
+# if defined(__GNUC__)
+    __asm__ __volatile__ ("rdtsc\n\t" : "=a" (u.s.u32Lo), "=d" (u.s.u32Hi));
+# else
+    __asm
+    {
+        rdtsc
+        mov     [u.s.u32Lo], eax
+        mov     [u.s.u32Hi], edx
+    }
+
+# endif
+    return u.u64;
+#endif
+}
+#define KPRF_NOW()                      kPrfNow()
+
+
+/**
+ * Atomically set a 32-bit value.
+ */
+static inline void kPrfAtomicSet32(volatile KU32 *pu32, const KU32 u32)
+{
+#if defined(HAVE_INTRIN)
+    _InterlockedExchange((long volatile *)pu32, (const long)u32);
+
+#elif defined(__GNUC__)
+    __asm__ __volatile__("xchgl %0, %1\n\t"
+                         : "=m" (*pu32)
+                         : "r" (u32));
+
+#elif _MSC_VER
+    __asm
+    {
+        mov     edx, [pu32]
+        mov     eax, [u32]
+        xchg    [edx], eax
+    }
+
+#else
+    *pu32 = u32;
+#endif
+}
+#define KPRF_ATOMIC_SET32(a,b)          kPrfAtomicSet32(a, b)
+
+
+
+/**
+ * Atomically set a 64-bit value.
+ */
+static inline void kPrfAtomicSet64(volatile KU64 *pu64, KU64 u64)
+{
+#if defined(HAVE_INTRIN) && KPRF_BITS == 64
+    _InterlockedExchange64((KI64 *)pu64, (const KI64)u64);
+
+#elif defined(__GNUC__) && KPRF_BITS == 64
+    __asm__ __volatile__("xchgq %0, %1\n\t"
+                         : "=m" (*pu64)
+                         : "r" (u64));
+
+#elif defined(__GNUC__) && KPRF_BITS == 32
+    __asm__ __volatile__("1:\n\t"
+                         "lock; cmpxchg8b %1\n\t"
+                         "jnz 1b\n\t"
+                         : "=A" (u64),
+                           "=m" (*pu64)
+                         : "0" (*pu64),
+                           "b" ( (KU32)u64 ),
+                           "c" ( (KU32)(u64 >> 32) ));
+
+#elif _MSC_VER
+    __asm
+    {
+        mov     ebx, dword ptr [u64]
+        mov     ecx, dword ptr [u64 + 4]
+        mov     esi, pu64
+        mov     eax, dword ptr [esi]
+        mov     edx, dword ptr [esi + 4]
+    retry:
+        lock cmpxchg8b [esi]
+        jnz retry
+    }
+#else
+    *pu64 = u64;
+#endif
+}
+#define KPRF_ATOMIC_SET64(a,b)          kPrfAtomicSet64(a, b)
+
+
+/**
+ * Atomically add a 32-bit integer to another.
+ */
+static inline void kPrfAtomicAdd32(volatile KU32 *pu32, const KU32 u32)
+{
+#if defined(HAVE_INTRIN)
+    _InterlockedExchangeAdd((volatile long *)pu32, (const long)u32);
+
+#elif defined(__GNUC__)
+    __asm__ __volatile__("lock; addl %0, %1\n\t"
+                         : "=m" (*pu32)
+                         : "r" (u32));
+
+#elif _MSC_VER
+    __asm
+    {
+        mov     edx, [pu32]
+        mov     eax, dword ptr [u32]
+        lock add [edx], eax
+    }
+
+#else
+    *pu32 += u32;
+#endif
+}
+#define KPRF_ATOMIC_ADD32(a,b)          kPrfAtomicAdd32(a, b)
+#define KPRF_ATOMIC_INC32(a)            kPrfAtomicAdd32(a, 1);
+#define KPRF_ATOMIC_DEC32(a)            kPrfAtomicAdd32(a, (KU32)-1);
+
+
+/**
+ * Atomically add a 64-bit integer to another.
+ * Atomically isn't quite required, just a non-corruptive manner, assuming all updates are adds.
+ */
+static inline void kPrfAtomicAdd64(volatile KU64 *pu64, const KU64 u64)
+{
+#if defined(HAVE_INTRIN) && KPRF_BITS == 64
+    _InterlockedExchangeAdd64((volatile KI64 *)pu64, (const KI64)u64);
+
+#elif defined(__GNUC__) && KPRF_BITS == 64
+    __asm__ __volatile__("lock; addq %0, %1\n\t"
+                         : "=m" (*pu64)
+                         : "r" (u64));
+
+#elif defined(__GNUC__) && KPRF_BITS == 32
+    __asm__ __volatile__("lock; addl %0, %2\n\t"
+                         "lock; adcl %1, %3\n\t"
+                         : "=m" (*(volatile KU32 *)pu64),
+                           "=m" (*((volatile KU32 *)pu64 + 1))
+                         : "r" ((KU32)u64),
+                           "r" ((KU32)(u64 >> 32)));
+
+#elif _MSC_VER
+    __asm
+    {
+        mov     edx, [pu64]
+        mov     eax, dword ptr [u64]
+        mov     ecx, dword ptr [u64 + 4]
+        lock add [edx], eax
+        lock adc [edx + 4], ecx
+    }
+
+#else
+    *pu64 += u64;
+#endif
+}
+#define KPRF_ATOMIC_ADD64(a,b)          kPrfAtomicAdd64(a, b)
+#define KPRF_ATOMIC_INC64(a)            kPrfAtomicAdd64(a, 1);
+
+
+/**
+ * Initializes a mutex.
+ *
+ * @returns 0 on success.
+ * @returns -1 on failure.
+ * @param   pMutex      The mutex to init.
+ */
+static int kPrfMutexInit(KPRF_TYPE(P,MUTEX) pMutex)
+{
+#if defined(KPRF_USE_PTHREAD)
+    if (!pthread_mutex_init(pMutex, NULL));
+        return 0;
+    return -1;
+
+#elif K_OS == K_OS_WINDOWS
+    InitializeCriticalSection(pMutex);
+    return 0;
+
+#elif K_OS == K_OS_OS2
+    if (!_fmutex_create(pMutex, 0))
+        return 0;
+    return -1;
+#endif
+}
+
+/**
+ * Deletes a mutex.
+ *
+ * @param   pMutex      The mutex to delete.
+ */
+static void kPrfMutexDelete(KPRF_TYPE(P,MUTEX) pMutex)
+{
+#if defined(KPRF_USE_PTHREAD)
+    pthread_mutex_destroy(pMutex);
+
+#elif K_OS == K_OS_WINDOWS
+    DeleteCriticalSection(pMutex);
+
+#elif K_OS == K_OS_OS2
+    _fmutex_close(pMutex);
+#endif
+}
+
+/**
+ * Locks a mutex.
+ * @param   pMutex      The mutex lock.
+ */
+static inline void kPrfMutexAcquire(KPRF_TYPE(P,MUTEX) pMutex)
+{
+#if K_OS == K_OS_WINDOWS
+    EnterCriticalSection(pMutex);
+
+#elif defined(KPRF_USE_PTHREAD)
+    pthread_mutex_lock(pMutex);
+
+#elif K_OS == K_OS_OS2
+    fmutex_request(pMutex);
+#endif
+}
+
+
+/**
+ * Unlocks a mutex.
+ * @param   pMutex      The mutex lock.
+ */
+static inline void kPrfMutexRelease(KPRF_TYPE(P,MUTEX) pMutex)
+{
+#if K_OS == K_OS_WINDOWS
+    LeaveCriticalSection(pMutex);
+
+#elif defined(KPRF_USE_PTHREAD)
+    pthread_mutex_lock(pMutex);
+
+#elif K_OS == K_OS_OS2
+    fmutex_request(pMutex);
+#endif
+}
+
+
+#define KPRF_THREADS_LOCK()             kPrfMutexAcquire(&g_ThreadsMutex)
+#define KPRF_THREADS_UNLOCK()           kPrfMutexRelease(&g_ThreadsMutex)
+
+#define KPRF_MODSEGS_LOCK()             kPrfMutexAcquire(&g_ModSegsMutex)
+#define KPRF_MODSEGS_UNLOCK()           kPrfMutexRelease(&g_ModSegsMutex)
+
+
+/**
+ * Initializes a read-write lock.
+ *
+ * @returns 0 on success.
+ * @returns -1 on failure.
+ * @param   pRWLock     The read-write lock to initialize.
+ */
+static inline int kPrfRWLockInit(KPRF_TYPE(P,RWLOCK) pRWLock)
+{
+#if defined(KPRF_USE_PTHREAD)
+    if (!pthread_rwlock_init(pRWLock, NULL))
+        return 0;
+    return -1;
+
+#elif K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+    if (kPrfMutexInit(&pRWLock->Mutex))
+        return -1;
+    pRWLock->cReaders = 0;
+    pRWLock->cReadersWaiting = 0;
+    pRWLock->cWritersWaiting = 0;
+    pRWLock->enmState = RWLOCK_STATE_SHARED;
+# if K_OS == K_OS_WINDOWS
+    pRWLock->hevReaders = CreateEvent(NULL, TRUE, TRUE, NULL);
+    pRWLock->hevWriters = CreateEvent(NULL, FALSE, FALSE, NULL);
+    if (    pRWLock->hevReaders != INVALID_HANDLE_VALUE
+        &&  pRWLock->hevWriters != INVALID_HANDLE_VALUE)
+        return 0;
+    CloseHandle(pRWLock->hevReaders);
+    CloseHandle(pRWLock->hevWriters);
+
+# elif K_OS == K_OS_OS2
+    APIRET rc = DosCreateEventSem(NULL, &pRWLock->hevReaders, 0, TRUE);
+    if (!rc)
+    {
+        rc = DosCreateEventSem(NULL, &pRWLock->hevWriters, 0, TRUE);
+        if (!rc)
+            return 0;
+        pRWLock->hevWriters = NULLHANDLE;
+        DosCloseEventSem(pRWLock->hevReaders);
+    }
+    pRWLock->hevReaders = NULLHANDLE;
+# endif
+
+    pRWLock->enmState = RWLOCK_STATE_UNINITIALIZED;
+    kPrfMutexDelete(&pRWLock->Mutex);
+    return -1;
+#endif
+}
+
+
+/**
+ * Deleters a read-write lock.
+ *
+ * @param   pRWLock     The read-write lock to delete.
+ */
+static inline void kPrfRWLockDelete(KPRF_TYPE(P,RWLOCK) pRWLock)
+{
+#if defined(KPRF_USE_PTHREAD)
+    pthread_rwlock_destroy(pRWLock);
+
+#elif K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+    if (pRWLock->enmState == RWLOCK_STATE_UNINITIALIZED)
+        return;
+
+    pRWLock->enmState = RWLOCK_STATE_UNINITIALIZED;
+    kPrfMutexDelete(&pRWLock->Mutex);
+    pRWLock->cReaders = 0;
+    pRWLock->cReadersWaiting = 0;
+    pRWLock->cWritersWaiting = 0;
+# if K_OS == K_OS_WINDOWS
+    CloseHandle(pRWLock->hevReaders);
+    pRWLock->hevReaders = INVALID_HANDLE_VALUE;
+    CloseHandle(pRWLock->hevWriters);
+    pRWLock->hevWriters = INVALID_HANDLE_VALUE;
+
+# elif K_OS == K_OS_OS2
+    DosCloseEventSem(pRWLock->hevReaders);
+    pRWLock->hevReaders = NULLHANDLE;
+    DosCloseEventSem(pRWLock->hevWriters);
+    pRWLock->hevWriters = NULLHANDLE;
+# endif
+#endif
+}
+
+
+/**
+ * Acquires read access to the read-write lock.
+ * @param   pRWLock     The read-write lock.
+ */
+static inline void kPrfRWLockAcquireRead(KPRF_TYPE(P,RWLOCK) pRWLock)
+{
+#if defined(KPRF_USE_PTHREAD)
+    pthread_rwlock_rdlock(pRWLock);
+
+#elif K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+    if (pRWLock->enmState == RWLOCK_STATE_UNINITIALIZED)
+        return;
+
+    kPrfMutexAcquire(&pRWLock->Mutex);
+    if (pRWLock->enmState == RWLOCK_STATE_SHARED)
+    {
+        KPRF_ATOMIC_INC32(&pRWLock->cReaders);
+        kPrfMutexRelease(&pRWLock->Mutex);
+        return;
+    }
+
+    for (;;)
+    {
+        /* have to wait */
+        KPRF_ATOMIC_INC32(&pRWLock->cReadersWaiting);
+# if K_OS == K_OS_WINDOWS
+        HANDLE hev = pRWLock->hevReaders;
+        ResetEvent(hev);
+
+# elif K_OS == K_OS_OS2
+        HEV    hev = pRWLock->hevReaders;
+        ULONG cIgnored;
+        DosResetEventSem(hev, &cIgnored);
+
+# endif
+        kPrfMutexRelease(&pRWLock->Mutex);
+
+# if K_OS == K_OS_WINDOWS
+        switch (WaitForSingleObject(hev, INFINITE))
+        {
+            case WAIT_IO_COMPLETION:
+            case WAIT_TIMEOUT:
+            case WAIT_OBJECT_0:
+                break;
+            case WAIT_ABANDONED:
+            default:
+                return;
+        }
+
+# elif K_OS == K_OS_OS2
+        switch (DosWaitEventSem(hev, SEM_INDEFINITE_WAIT))
+        {
+            case NO_ERROR:
+            case ERROR_SEM_TIMEOUT:
+            case ERROR_TIMEOUT:
+            case ERROR_INTERRUPT:
+                break;
+            default:
+                return;
+        }
+# endif
+
+        kPrfMutexAcquire(&pRWLock->Mutex);
+        if (pRWLock->enmState == RWLOCK_STATE_SHARED)
+        {
+            KPRF_ATOMIC_INC32(&pRWLock->cReaders);
+            KPRF_ATOMIC_DEC32(&pRWLock->cReadersWaiting);
+            kPrfMutexRelease(&pRWLock->Mutex);
+            return;
+        }
+    }
+#endif
+}
+
+
+/**
+ * Releases read access to the read-write lock.
+ * @param   pRWLock     The read-write lock.
+ */
+static inline void kPrfRWLockReleaseRead(KPRF_TYPE(P,RWLOCK) pRWLock)
+{
+#if defined(KPRF_USE_PTHREAD)
+    pthread_rwlock_unlock(pRWLock);
+
+#elif K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+    if (pRWLock->enmState == RWLOCK_STATE_UNINITIALIZED)
+        return;
+
+    /*
+     * If we're still in the shared state, or if there
+     * are more readers out there, or if there are no
+     * waiting writers, all we have to do is decrement an leave.
+     *
+     * That's the most frequent, thing and should be fast.
+     */
+    kPrfMutexAcquire(&pRWLock->Mutex);
+    KPRF_ATOMIC_DEC32(&pRWLock->cReaders);
+    if (    pRWLock->enmState == RWLOCK_STATE_SHARED
+        ||  pRWLock->cReaders
+        ||  !pRWLock->cWritersWaiting)
+    {
+        kPrfMutexRelease(&pRWLock->Mutex);
+        return;
+    }
+
+    /*
+     * Wake up one (or more on OS/2) waiting writers.
+     */
+# if K_OS == K_OS_WINDOWS
+    SetEvent(pRWLock->hevWriters);
+# elif K_OS == K_OS_OS2
+    DosPostEvent(pRWLock->hevwriters);
+# endif
+    kPrfMutexRelease(&pRWLock->Mutex);
+
+#endif
+}
+
+
+/**
+ * Acquires write access to the read-write lock.
+ * @param   pRWLock     The read-write lock.
+ */
+static inline void kPrfRWLockAcquireWrite(KPRF_TYPE(P,RWLOCK) pRWLock)
+{
+#if defined(KPRF_USE_PTHREAD)
+    pthread_rwlock_wrlock(pRWLock);
+
+#elif K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+    if (pRWLock->enmState == RWLOCK_STATE_UNINITIALIZED)
+        return;
+
+    kPrfMutexAcquire(&pRWLock->Mutex);
+    if (    !pRWLock->cReaders
+        &&  (   pRWLock->enmState == RWLOCK_STATE_SHARED
+             || pRWLock->enmState == RWLOCK_STATE_LOCKING)
+        )
+    {
+        KPRF_RWLOCK_SETSTATE(pRWLock, RWLOCK_STATE_EXCLUSIVE);
+        kPrfMutexRelease(&pRWLock->Mutex);
+        return;
+    }
+
+    /*
+     * We'll have to wait.
+     */
+    if (pRWLock->enmState == RWLOCK_STATE_SHARED)
+        KPRF_RWLOCK_SETSTATE(pRWLock, RWLOCK_STATE_LOCKING);
+    KPRF_ATOMIC_INC32(&pRWLock->cWritersWaiting);
+    for (;;)
+    {
+# if K_OS == K_OS_WINDOWS
+        HANDLE hev = pRWLock->hevWriters;
+# elif K_OS == K_OS_OS2
+        HEV    hev = pRWLock->hevWriters;
+# endif
+        kPrfMutexRelease(&pRWLock->Mutex);
+# if K_OS == K_OS_WINDOWS
+        switch (WaitForSingleObject(hev, INFINITE))
+        {
+            case WAIT_IO_COMPLETION:
+            case WAIT_TIMEOUT:
+            case WAIT_OBJECT_0:
+                break;
+            case WAIT_ABANDONED:
+            default:
+                KPRF_ATOMIC_DEC32(&pRWLock->cWritersWaiting);
+                return;
+        }
+
+# elif K_OS == K_OS_OS2
+        switch (DosWaitEventSem(hev, SEM_INDEFINITE_WAIT))
+        {
+            case NO_ERROR:
+            case ERROR_SEM_TIMEOUT:
+            case ERROR_TIMEOUT:
+            case ERROR_INTERRUPT:
+                break;
+            default:
+                KPRF_ATOMIC_DEC32(&pRWLock->cWritersWaiting);
+                return;
+        }
+        ULONG cIgnored;
+        DosResetEventSem(hev, &cIgnored);
+# endif
+
+        /*
+         * Try acquire the lock.
+         */
+        kPrfMutexAcquire(&pRWLock->Mutex);
+        if (    !pRWLock->cReaders
+            &&  (   pRWLock->enmState == RWLOCK_STATE_SHARED
+                 || pRWLock->enmState == RWLOCK_STATE_LOCKING)
+            )
+        {
+            KPRF_RWLOCK_SETSTATE(pRWLock, RWLOCK_STATE_EXCLUSIVE);
+            KPRF_ATOMIC_DEC32(&pRWLock->cWritersWaiting);
+            kPrfMutexRelease(&pRWLock->Mutex);
+            return;
+        }
+    }
+#endif
+}
+
+
+/**
+ * Releases write access to the read-write lock.
+ * @param   pRWLock     The read-write lock.
+ */
+static inline void kPrfRWLockReleaseWrite(KPRF_TYPE(P,RWLOCK) pRWLock)
+{
+#if defined(KPRF_USE_PTHREAD)
+    pthread_rwlock_unlock(pRWLock);
+
+#elif K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
+    if (pRWLock->enmState == RWLOCK_STATE_UNINITIALIZED)
+        return;
+
+    /*
+     * The common thing is that there are noone waiting.
+     * But, before that usual paranoia.
+     */
+    kPrfMutexAcquire(&pRWLock->Mutex);
+    if (pRWLock->enmState != RWLOCK_STATE_EXCLUSIVE)
+    {
+        kPrfMutexRelease(&pRWLock->Mutex);
+        return;
+    }
+    if (    !pRWLock->cReadersWaiting
+        &&  !pRWLock->cWritersWaiting)
+    {
+        KPRF_RWLOCK_SETSTATE(pRWLock, RWLOCK_STATE_SHARED);
+        kPrfMutexRelease(&pRWLock->Mutex);
+        return;
+    }
+
+    /*
+     * Someone is waiting, wake them up as we change the state.
+     */
+# if K_OS == K_OS_WINDOWS
+    HANDLE hev = INVALID_HANDLE_VALUE;
+# elif K_OS == K_OS_OS2
+    HEV    hev = NULLHANDLE;
+# endif
+
+    if (pRWLock->cWritersWaiting)
+    {
+        KPRF_RWLOCK_SETSTATE(pRWLock, RWLOCK_STATE_LOCKING);
+        hev = pRWLock->hevWriters;
+    }
+    else
+    {
+        KPRF_RWLOCK_SETSTATE(pRWLock, RWLOCK_STATE_SHARED);
+        hev = pRWLock->hevReaders;
+    }
+# if K_OS == K_OS_WINDOWS
+    SetEvent(hev);
+# elif K_OS == K_OS_OS2
+    DosPostEvent(pRWLock->hevwriters);
+# endif
+    kPrfMutexRelease(&pRWLock->Mutex);
+
+#endif
+}
+
+#define KPRF_FUNCS_WRITE_LOCK()         kPrfRWLockAcquireWrite(&g_FunctionsRWLock)
+#define KPRF_FUNCS_WRITE_UNLOCK()       kPrfRWLockReleaseWrite(&g_FunctionsRWLock)
+#define KPRF_FUNCS_READ_LOCK()          kPrfRWLockAcquireRead(&g_FunctionsRWLock)
+#define KPRF_FUNCS_READ_UNLOCK()        kPrfRWLockReleaseRead(&g_FunctionsRWLock)
+
+
+
+
+/**
+ * Finds the module segment which the address belongs to.
+ *
+ */
+static int kPrfGetModSeg(KPRF_TYPE(,UPTR) uAddress, char *pszPath, KU32 cchPath, KU32 *piSegment,
+                         KPRF_TYPE(P,UPTR) puBasePtr, KPRF_TYPE(P,UPTR) pcbSegmentMinusOne)
+{
+#if K_OS == K_OS_WINDOWS
+    /*
+     * Enumerate the module handles.
+     */
+    HANDLE      hProcess = GetCurrentProcess();
+    DWORD       cbNeeded = 0;
+    HMODULE     hModIgnored;
+    if (    !EnumProcessModules(hProcess, &hModIgnored, sizeof(hModIgnored), &cbNeeded)
+        &&  GetLastError() != ERROR_BUFFER_OVERFLOW) /** figure out what this actually returns */
+        cbNeeded = 256 * sizeof(HMODULE);
+
+    cbNeeded += sizeof(HMODULE) * 32;
+    HMODULE *pahModules = (HMODULE *)alloca(cbNeeded);
+    if (EnumProcessModules(hProcess, pahModules, cbNeeded, &cbNeeded))
+    {
+        const unsigned cModules = cbNeeded / sizeof(HMODULE);
+        for (unsigned i = 0; i < cModules; i++)
+        {
+            __try
+            {
+                const KUPTR uImageBase = (KUPTR)pahModules[i];
+                union
+                {
+                    KU8                *pu8;
+                    PIMAGE_DOS_HEADER   pDos;
+                    PIMAGE_NT_HEADERS   pNt;
+                    PIMAGE_NT_HEADERS32 pNt32;
+                    PIMAGE_NT_HEADERS64 pNt64;
+                    KUPTR               u;
+                } u;
+                u.u = uImageBase;
+
+                /* reject modules higher than the address. */
+                if (uAddress < u.u)
+                    continue;
+
+                /* Skip past the MZ header */
+                if (u.pDos->e_magic == IMAGE_DOS_SIGNATURE)
+                    u.pu8 += u.pDos->e_lfanew;
+
+                /* Ignore anything which isn't an NT header. */
+                if (u.pNt->Signature != IMAGE_NT_SIGNATURE)
+                    continue;
+
+                /* Extract necessary info from the optional header (comes in 32-bit and 64-bit variations, we simplify a bit). */
+                KU32                    cbImage;
+                PIMAGE_SECTION_HEADER   paSHs;
+                if (u.pNt->FileHeader.SizeOfOptionalHeader == sizeof(IMAGE_OPTIONAL_HEADER32))
+                {
+                    paSHs = (PIMAGE_SECTION_HEADER)(u.pNt32 + 1);
+                    cbImage = u.pNt32->OptionalHeader.SizeOfImage;
+                }
+                else if (u.pNt->FileHeader.SizeOfOptionalHeader == sizeof(IMAGE_OPTIONAL_HEADER64))
+                {
+                    paSHs = (PIMAGE_SECTION_HEADER)(u.pNt64 + 1);
+                    cbImage = u.pNt64->OptionalHeader.SizeOfImage;
+                }
+                else
+                    continue;
+
+                /* Is our address within the image size */
+                KUPTR uRVA = uAddress - (KUPTR)pahModules[i];
+                if (uRVA >= cbImage)
+                    continue;
+
+                /*
+                 * Iterate the section headers and figure which section we're in.
+                 * (segment == section + 1)
+                 */
+                const KU32 cSHs = u.pNt->FileHeader.NumberOfSections;
+                if (uRVA < paSHs[0].VirtualAddress)
+                {
+                    /* the implicit header section */
+                    *puBasePtr          = uImageBase;
+                    *pcbSegmentMinusOne = paSHs[0].VirtualAddress - 1;
+                    *piSegment          = 0;
+                }
+                else
+                {
+                    KU32 iSH = 0;
+                    for (;;)
+                    {
+                        if (iSH >= cSHs)
+                        {
+                            /* this shouldn't happen, but in case it does simply deal with it. */
+                            *puBasePtr          = paSHs[iSH - 1].VirtualAddress + paSHs[iSH - 1].Misc.VirtualSize + uImageBase;
+                            *pcbSegmentMinusOne = cbImage - *puBasePtr;
+                            *piSegment          = iSH + 1;
+                            break;
+                        }
+                        if (uRVA - paSHs[iSH].VirtualAddress < paSHs[iSH].Misc.VirtualSize)
+                        {
+                            *puBasePtr          = paSHs[iSH].VirtualAddress + uImageBase;
+                            *pcbSegmentMinusOne = paSHs[iSH].Misc.VirtualSize;
+                            *piSegment          = iSH + 1;
+                            break;
+                        }
+                        iSH++;
+                    }
+                }
+
+                /*
+                 * Finally, get the module name.
+                 * There are multiple ways, try them all before giving up.
+                 */
+                if (    !GetModuleFileNameEx(hProcess, pahModules[i], pszPath, cchPath)
+                    &&  !GetModuleFileName(pahModules[i], pszPath, cchPath)
+                    &&  !GetMappedFileName(hProcess, (PVOID)uAddress, pszPath, cchPath)
+                    &&  !GetModuleBaseName(hProcess, pahModules[i], pszPath, cchPath))
+                    *pszPath = '\0';
+                return 0;
+            }
+            __except (EXCEPTION_EXECUTE_HANDLER)
+            {
+            }
+        }
+    }
+
+#elif K_OS == K_OS_OS2
+    /*
+     * Just ask the loader.
+     */
+    ULONG   offObj = 0;
+    ULONG   iObj = 0;
+    HMODULE hmod = NULLHANDLE;
+    APIRET rc = DosQueryModFromEIP(&hmod, &iObj, cchPath, pszPath, &offObj, uAddress);
+    if (!rc)
+    {
+        *piSegment = iObj;
+        *puBasePtr = uAddress - offObj;
+        *pcbSegmentMinusOne = KPRF_ALIGN(offObj, 0x1000) - 1; /* minimum size */
+
+        /*
+         * Query the page attributes starting at the current page. The query will not enter
+         * into the next object since PAG_BASE is requested.
+         */
+        ULONG cb     = ~0UL;
+        ULONG fFlags = ~0UL;
+        uAddress &= ~(KUPTR)0xfff;
+        rc = DosQueryMem((PVOID)(uAddress, &cb, &fFlags);
+        if (!rc)
+        {
+            *pcbSegmentMinusOne = (offObj & ~(KUPTR)0xfff) + KPRF_ALIGN(cb, 0x1000) - 1;
+            if ((fFlags & PAG_BASE) && cb <= 0x1000) /* don't quite remember if PAG_BASE returns one page or not */
+            {
+                cb = ~0UL;
+                fFlags = ~0UL;
+                rc = DosQueryMem((PVOID)(uAddress + 0x1000), &cb, &fFlags);
+                if (!rc & !(fFlags & (PAG_BASE | PAG_FREE)))
+                    *pcbSegmentMinusOne += KPRF_ALIGN(cb, 0x1000);
+            }
+        }
+        return 0;
+    }
+
+#endif
+    /* The common fallback */
+    *pszPath = '\0';
+    *piSegment = 0;
+    *puBasePtr = 0;
+    *pcbSegmentMinusOne = ~(KPRF_TYPE(,UPTR))0;
+    return -1;
+}
+#define KPRF_GET_MODSEG(uAddress, pszPath, cchPath, piSegment, puBasePtr, pcbSegmentMinusOne) \
+                                        kPrfGetModSeg(uAddress, pszPath, cchPath, piSegment, puBasePtr, pcbSegmentMinusOne)
+
+
+
+
+/*
+ * Instantiate the implementation
+ */
+#include "prfcorepre.cpp.h"
+
+#include "prfcoremodseg.cpp.h"
+#include "prfcorefunction.cpp.h"
+#include "prfcore.cpp.h"
+#include "prfcoreinit.cpp.h"
+#include "prfcoreterm.cpp.h"
+
+#include "prfcorepost.cpp.h"
+
+
+
+
+
+/**
+ * Registers an unknown thread.
+ *
+ * @returns Pointer to the registered thread.
+ */
+static KPRF_TYPE(P,THREAD) kPrfGetThreadAutoReg(void)
+{
+    KUPTR uStackBasePtr;
+
+#if 0
+    /** @todo I'm sure Win32 has a way of obtaining the top and bottom of the stack, OS/2 did...
+     * Some limit stuff in posix / ansi also comes to mind... */
+
+#elif K_OS == K_OS_OS2
+    PTIB pTib;
+    PPIB pPib;
+    DosGetInfoBlocks(&pTib, &pPib); /* never fails except if you give it bad input, thus 'Get' not 'Query'. */
+    /* I never recall which of these is the right one... */
+    uStackBasePtr = (KUPTR)pTib->tib_pstack < (KUPTR)pTib->tib_pstack_limit
+        ? (KUPTR)pTib->tib_pstack
+        : (KUPTR)pTib->tib_pstack_limit;
+
+#else
+    /* the default is top of the current stack page (assuming a page to be 4KB) */
+    uStackBasePtr = (KUPTR)&uStackBasePtr;
+    uStackBasePtr = (uStackBasePtr + 0xfff) & ~(KUPTR)0xfff;
+#endif
+
+    return KPRF_NAME(RegisterThread)(uStackBasePtr, "");
+}
+
+
+/**
+ * Get a env.var. variable.
+ *
+ * @returns pszValue.
+ * @param   pszVar      The variable name.
+ * @param   pszValue    Where to store the value.
+ * @param   cchValue    The size of the value buffer.
+ * @param   pszDefault  The default value.
+ */
+static char *kPrfGetEnvString(const char *pszVar, char *pszValue, KU32 cchValue, const char *pszDefault)
+{
+#if K_OS == K_OS_WINDOWS
+    if (GetEnvironmentVariable(pszVar, pszValue, cchValue))
+        return pszValue;
+
+#elif K_OS == K_OS_OS2
+    PSZ pszValue;
+    if (    !DosScanEnv((PCSZ)pszVar, &pszValue)
+        &&  !*pszValue)
+        pszDefault = pszValue;
+
+#else
+    const char *pszTmp = getenv(pszVar);
+    if (pszTmp)
+        pszDefault = pszTmp;
+
+#endif
+
+    /*
+     * Copy the result into the buffer.
+     */
+    char *psz = pszValue;
+    while (*pszDefault && cchValue-- > 1)
+        *psz++ = *pszDefault++;
+    *psz = '\0';
+
+    return pszValue;
+}
+
+
+/**
+ * The the value of an env.var.
+ *
+ * @returns The value of the env.var.
+ * @returns The default if the value was not found.
+ * @param   pszVar      The variable name.
+ * @param   uDefault    The default value.
+ */
+static KU32 kPrfGetEnvValue(const char *pszVar, KU32 uDefault)
+{
+#if K_OS == K_OS_WINDOWS
+    char szBuf[128];
+    const char *pszValue = szBuf;
+    if (!GetEnvironmentVariable(pszVar, szBuf, sizeof(szBuf)))
+        pszValue = NULL;
+
+#elif K_OS == K_OS_OS2
+    PSZ pszValue;
+    if (DosScanEnv((PCSZ)pszVar, &pszValue))
+        pszValue = NULL;
+
+#else
+    const char *pszValue = getenv(pszVar);
+
+#endif
+
+    /*
+     * Discard the obvious stuff.
+     */
+    if (!pszValue)
+        return uDefault;
+    while (*pszValue == ' ' || *pszValue == '\t')
+        pszValue++;
+    if (!*pszValue)
+        return uDefault;
+
+    /*
+     * Interpret the value.
+     */
+    unsigned    uBase = 10;
+    KU32        uValue = 0;
+    const char *psz = pszValue;
+
+    /* prefix - only hex */
+    if (*psz == '0' && (psz[1] == 'x' || psz[1] == 'X'))
+    {
+        uBase = 16;
+        psz += 2;
+    }
+
+    /* read the value */
+    while (*psz)
+    {
+        unsigned char ch = (unsigned char)*psz;
+        if (ch >= '0' && ch <= '9')
+            ch -= '0';
+        else if (   uBase > 10
+                 && ch >= 'a' && ch <= 'f')
+            ch -= 'a' + 10;
+        else if (   uBase > 10
+                 && ch >= 'a' && ch <= 'F')
+            ch -= 'a' + 10;
+        else
+            break;
+        uValue *= uBase;
+        uValue += ch;
+        psz++;
+    }
+
+    /* postfixes */
+    switch (*psz)
+    {
+        case 'm':
+        case 'M':
+            uValue *= 1024*1024;
+            break;
+
+        case 'k':
+        case 'K':
+            uValue *= 1024;
+            break;
+    }
+
+    /*
+     * If the value is still 0, we return the default.
+     */
+    return uValue ? uValue : uDefault;
+}
+
+
+/**
+ * Allocates memory.
+ *
+ * @returns Pointer to the allocated memory.
+ * @returns NULL on failure.
+ * @param   cb      The amount of memory (in bytes) to allocate.
+ */
+static void *kPrfAllocMem(KU32 cb)
+{
+#if K_OS == K_OS_WINDOWS
+    void *pv = VirtualAlloc(NULL, cb, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
+
+#elif defined(KPRF_USE_MMAN)
+    void *pv = mmap(NULL, cb, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+
+#elif K_OS == K_OS_OS2
+    void *pv;
+# ifdef INCL_DOSEXAPIS
+    if (DosAllocMemEx(&pv, cb, PAG_READ | PAG_WRITE | PAG_EXECUTE | PAG_COMMIT | OBJ_FORK))s
+# else
+    if (DosAllocMem(&pv, cb, PAG_READ | PAG_WRITE | PAG_EXECUTE | PAG_COMMIT))
+# endif
+        pvBuf = NULL;
+
+#else
+# error not implemented
+#endif
+    return pv;
+}
+
+
+/**
+ * Frees memory.
+ *
+ * @param   pv      The memory to free.
+ */
+static void kPrfFreeMem(void *pv)
+{
+#if K_OS == K_OS_WINDOWS
+    VirtualFree(pv, 0, MEM_RELEASE);
+
+#elif defined(KPRF_USE_MMAN)
+    munmap(pv, 0); /** @todo check if 0 is allowed here.. */
+
+#elif K_OS == K_OS_OS2
+# ifdef INCL_DOSEXAPIS
+    DosFreeMemEx(&pv);
+# else
+    DosFreeMem(&pv);
+# endif
+
+#else
+# error not implemented
+#endif
+}
+
+
+/**
+ * Writes a data buffer to a new file.
+ *
+ * Any existing file will be overwritten.
+ *
+ *
+ * @returns 0 on success.
+ * @returns -1 on failure.
+ *
+ * @param   pszName     The name of the file.
+ * @param   pvData      The data to write.
+ * @param   cbData      The amount of data to write.
+ */
+static int kPrfWriteFile(const char *pszName, const void *pvData, KU32 cbData)
+{
+#if K_OS == K_OS_WINDOWS
+    int rc = -1;
+    HANDLE hFile = CreateFile(pszName,GENERIC_WRITE, FILE_SHARE_READ, NULL,
+                              CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, INVALID_HANDLE_VALUE);
+    if (hFile != INVALID_HANDLE_VALUE)
+    {
+        DWORD dwWritten;
+        if (    WriteFile(hFile, pvData, cbData, &dwWritten, NULL)
+            &&  dwWritten == cbData)
+            rc = 0;
+        CloseHandle(hFile);
+    }
+    return rc;
+
+#elif K_OS == K_OS_OS2
+    HFILE hFile;
+    ULONG ulAction = 0;
+    APIRET rc = DosOpen(pszName, &hFile, &ulAction, cbData, FILE_NORMAL,
+                        OPEN_ACTION_REPLACE_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW,
+                        OPEN_ACCESS_WRITEONLY | OPEN_SHARE_DENYWRITE | OPEN_FLAGS_NOINHERIT | OPEN_FLAGS_SEQUENTIAL,
+                        NULL);
+    if (!rc)
+    {
+        ULONG cbWritten;
+        rc = DosWrite(hFile, pvData, cbData, &cbWritten);
+        if (!rc && cbWritten != cbData)
+            rc = -1;
+        DosClose(hFile);
+    }
+    return rc ? -1 : 0;
+
+#else
+    int rc = -1;
+    int fd = open(pszName, O_WRONLY | O_CREAT | O_BINARY | O_TRUNC, 0666);
+    if (fd >= 0)
+    {
+        if (write(fd, pvData, cbData) == cbData)
+            rc = 0;
+        close(fd);
+    }
+    return rc;
+
+#endif
+}
+
+
+
+/**
+ * Initializes and start the profiling.
+ *
+ * This should typically be called from some kind of module init
+ * function, so we can start profiling upon/before entering main().
+ *
+ * @returns 0 on success
+ * @returns -1 on failure.
+ *
+ */
+int kPrfInitialize(void)
+{
+    /*
+     * Only initialize once.
+     */
+    if (KPRF_GET_HDR())
+        return 0;
+
+    /*
+     * Initial suggestions.
+     */
+    KU32    cbModSegs  = kPrfGetEnvValue("KPRF2_CBMODSEGS",  128*1024);
+    KU32    cFunctions = kPrfGetEnvValue("KPRF2_CFUNCTIONS", 8192);
+    KU32    cThreads   = kPrfGetEnvValue("KPRF2_CTHREADS",   256);
+    KU32    cStacks    = kPrfGetEnvValue("KPRF2_CSTACKS",    48);
+    KU32    cFrames    = kPrfGetEnvValue("KPRF2_CFRAMES",    448);
+    KU32    fAffinity  = kPrfGetEnvValue("KPRF2_AFFINITY",   0);
+
+    KU32    cb = KPRF_NAME(CalcSize)(cFunctions, cbModSegs, cThreads, cStacks, cFrames);
+
+    /*
+     * Allocate and initialize the data set.
+     */
+    void *pvBuf = kPrfAllocMem(cb);
+    if (!pvBuf)
+        return -1;
+
+    KPRF_TYPE(P,HDR) pHdr = KPRF_NAME(Init)(pvBuf, cb, cFunctions, cbModSegs, cThreads, cStacks, cFrames);
+    if (pHdr)
+    {
+        /*
+         * Initialize semaphores.
+         */
+        if (!kPrfMutexInit(&g_ThreadsMutex))
+        {
+            if (!kPrfMutexInit(&g_ModSegsMutex))
+            {
+                if (!kPrfRWLockInit(&g_FunctionsRWLock))
+                {
+                    /*
+                     * Allocate the TLS entry.
+                     */
+#if K_OS == K_OS_WINDOWS
+                    g_dwThreadTLS = TlsAlloc();
+                    if (g_dwThreadTLS != TLS_OUT_OF_INDEXES)
+
+#elif defined(KPRF_USE_PTHREAD)
+                    int rc = pthread_key_create(&g_ThreadKey, kPrfPThreadKeyDtor);
+                    if (!rc)
+
+#elif K_OS == K_OS_OS2
+                    int rc = DosAllocThreadLocalMemory(sizeof(void *), (PULONG*)&g_ppThread); /** @todo check if this is a count or a size. */
+                    if (!rc)
+
+#endif
+                    {
+                        /*
+                         * Apply the affinity mask, if specified.
+                         */
+                        if (fAffinity)
+                        {
+#if K_OS == K_OS_WINDOWS
+                            SetProcessAffinityMask(GetCurrentProcess(), fAffinity);
+#endif
+                        }
+
+                        g_pHdr = pHdr;
+                        g_fEnabled = true;
+                        return 0;
+                    }
+                    kPrfRWLockDelete(&g_FunctionsRWLock);
+                }
+                kPrfMutexDelete(&g_ModSegsMutex);
+            }
+            kPrfMutexDelete(&g_ThreadsMutex);
+        }
+    }
+    kPrfFreeMem(pvBuf);
+    return -1;
+}
+
+
+/**
+ * Stops, dumps, and terminates the profiling.
+ *
+ * This should typically be called from some kind of module destruction
+ * function, so we can profile parts of the termination sequence too.
+ *
+ * @returns 0 on success
+ * @returns -1 on failure.
+ *
+ */
+int kPrfTerminate(void)
+{
+    /*
+     * Stop the profiling.
+     * As a safety precaution, sleep a little bit to allow threads
+     * still at large inside profiler code some time to get out.
+     */
+    g_fEnabled = false;
+    KPRF_TYPE(P,HDR) pHdr = g_pHdr;
+    g_pHdr = NULL;
+    if (!pHdr)
+        return -1;
+
+#if K_OS == K_OS_WINDOWS
+    Sleep(10);
+#elif K_OS == K_OS_OS2
+    DosSleep(10);
+#else
+    usleep(10000);
+#endif
+
+    /*
+     * Unwind all active threads and so forth.
+     */
+    KPRF_NAME(TerminateAll)(pHdr);
+
+    /*
+     * Use the stack space to fill in process details.
+     */
+#if K_OS == K_OS_WINDOWS
+    /* all is one single string */
+    const char *pszCommandLine = GetCommandLine();
+    if (pszCommandLine)
+        KPRF_NAME(SetCommandLine)(pHdr, 1, &pszCommandLine);
+
+#elif K_OS == K_OS_OS2 || K_OS == K_OS_OS2
+    PTIB pTib;
+    PPIB pPib;
+    DosGetInfoBlocks(&pTib, &pPib);
+    if (pPib->pib_pchcmd)
+    {
+        /* Tradition say that the commandline is made up of two zero terminate strings
+         * - first the executable name, then the arguments. Similar to what unix does,
+         *   only completely mocked up because of the CMD.EXE tradition.
+         */
+        const char *apszArgs[2];
+        apszArgs[0] = pPib->pib_pchcmd;
+        apszArgs[1] = pPib->pib_pchcmd;
+        while (apszArgs[1][0])
+            apszArgs[1]++;
+        apszArgs[1]++;
+        KPRF_NAME(SetCommandLine)(pHdr, 2, apszArgs);
+    }
+
+#else
+    /* linux can read /proc/self/something I guess. Don't know about the rest... */
+
+#endif
+
+    /*
+     * Write the file to disk.
+     */
+    char szName[260 + 16];
+    kPrfGetEnvString("KPRF2_FILE", szName, sizeof(szName) - 16, "kPrf2-");
+
+    /* append the process id */
+    KUPTR pid = kPrfGetProcessId();
+    char *psz = szName;
+    while (*psz)
+        psz++;
+
+    static char s_szDigits[0x11] = "0123456789abcdef";
+    KU32 uShift = KPRF_BITS - 4;
+    while (     uShift > 0
+           &&   !(pid & (0xf << uShift)))
+        uShift -= 4;
+    *psz++ = s_szDigits[(pid >> uShift) & 0xf];
+     while (uShift > 0)
+     {
+         uShift -= 4;
+         *psz++ = s_szDigits[(pid >> uShift) & 0xf];
+     }
+
+    /* .kPrf2 */
+    *psz++ = '.';
+    *psz++ = 'k';
+    *psz++ = 'P';
+    *psz++ = 'r';
+    *psz++ = 'f';
+    *psz++ = '2';
+    *psz++ = '\0';
+
+    /* write the file. */
+    int rc = kPrfWriteFile(szName, pHdr, pHdr->cb);
+
+    /*
+     * Free resources.
+     */
+    kPrfFreeMem(pHdr);
+#if K_OS == K_OS_WINDOWS
+    TlsFree(g_dwThreadTLS);
+    g_dwThreadTLS = TLS_OUT_OF_INDEXES;
+
+#elif defined(KPRF_USE_PTHREAD)
+    pthread_key_delete(g_ThreadKey);
+    g_ThreadKey = (pthread_key_t)-1;
+
+#elif K_OS == K_OS_OS2
+    DosFreeThreadLocalMemory((PULONG)g_ppThread);
+    g_ppThread = NULL;
+
+#else
+# error "port me!"
+#endif
+
+    kPrfMutexDelete(&g_ThreadsMutex);
+    kPrfMutexDelete(&g_ModSegsMutex);
+    kPrfRWLockDelete(&g_FunctionsRWLock);
+
+    return rc;
+}
+
+
+/**
+ * Terminate the current thread.
+ */
+void kPrfTerminateThread(void)
+{
+    KPRF_NAME(DeregisterThread)();
+}
+
+
+#ifdef KPRF_USE_PTHREAD
+/**
+ * TLS destructor.
+ */
+static void kPrfPThreadKeyDtor(void *pvThread)
+{
+    KPRF_TYPE(P,HDR) pHdr = KPRF_GET_HDR();
+    if (pHdr)
+    {
+        KPRF_TYPE(P,THREAD) pThread = (KPRF_TYPE(P,THREAD))pvThread;
+        pthread_setspecific(g_ThreadKey, pvThread);
+        KPRF_NAME(TerminateThread)(pHdr, pThread, KPRF_NOW());
+        pthread_setspecific(g_ThreadKey, NULL);
+    }
+}
+#endif
+
diff --git a/src/lib/kStuff/kProfiler2/kProfileR3.h b/src/lib/kStuff/kProfiler2/kProfileR3.h
new file mode 100644
index 0000000..87938c9
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/kProfileR3.h
@@ -0,0 +1,39 @@
+/* $Id: kProfileR3.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kProfiler Mark 2 - Internal header, Ring-3.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___kProfileR3_h___
+#define ___kProfileR3_h___
+
+int kPrfInitialize(void);
+int kPrfTerminate(void);
+void kPrfTerminateThread(void);
+
+#endif
+
diff --git a/src/lib/kStuff/kProfiler2/prfamd64msc.asm b/src/lib/kStuff/kProfiler2/prfamd64msc.asm
new file mode 100644
index 0000000..87079e2
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/prfamd64msc.asm
@@ -0,0 +1,474 @@
+; $Id: prfamd64msc.asm 29 2009-07-01 20:30:29Z bird $;
+;; @file
+; kProfiler Mark 2 - Microsoft C/C++ Compiler Interaction, AMD64.
+;
+
+;
+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+;
+; Permission is hereby granted, free of charge, to any person
+; obtaining a copy of this software and associated documentation
+; files (the "Software"), to deal in the Software without
+; restriction, including without limitation the rights to use,
+; copy, modify, merge, publish, distribute, sublicense, and/or sell
+; copies of the Software, and to permit persons to whom the
+; Software is furnished to do so, subject to the following
+; conditions:
+;
+; The above copyright notice and this permission notice shall be
+; included in all copies or substantial portions of the Software.
+;
+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+; OTHER DEALINGS IN THE SOFTWARE.
+;
+
+[section .data]
+;
+g_fCalibrated:
+        dd 0
+g_OverheadAdj:
+        dd 0
+
+[section .text]
+
+extern KPRF_ENTER
+extern KPRF_LEAVE
+
+global _penter
+global _pexit
+
+;ifdef  UNDEFINED
+global common_return_path
+global common_overhead
+global common_no_overhead
+global calibrate
+global calib_inner_update_minimum
+global calib_inner_next
+global calib_outer_dec
+global calib_outer_inc
+global calib_done
+global calib_nullproc
+;endif
+
+
+;;
+; On x86 the call to this function has been observed to be put before
+; creating the stack frame, as the very first instruction in the function.
+;
+; Thus the stack layout is as follows:
+;       24      return address of the calling function.
+;       20      our return address - the address of the calling function + 5.
+;       1c      eax
+;       18      edx
+;       14      eflags
+;       10      ecx
+;       c       tsc high       - param 3
+;       8       tsc low
+;       4       frame pointer  - param 2
+;       0       function ptr   - param 1
+;
+;
+align 16
+_penter:
+        ; save volatile register and get the time stamp.
+        push    rax
+        push    rdx
+        rdtsc
+        pushfq
+        push    rcx
+        push    r8
+        push    r9
+        push    r10
+        push    r11
+        sub     rsp, 28h                ; rsp is unaligned at this point (8 pushes).
+                                        ; reserve 20h for spill, and 8 bytes for ts.
+
+        ; setting up the enter call frame
+        mov     r8d, edx
+        shl     r8, 32
+        or      r8, rax                 ; param 3 - the timestamp
+        mov     [rsp + 20h], r8         ; save the tsc for later use.
+        lea     rdx, [rsp + 8*8 + 28h]  ; Param 2 - default frame pointer
+        mov     rcx, [rdx]              ; Param 1 - The function address
+
+        ; MSC seems to put the _penter both before and after the typical sub rsp, xxh
+        ; statement as if it cannot quite make up its mind. We'll try adjust for this
+        ; to make the unwinding a bit more accurate wrt to longjmp/throw. But since
+        ; there are also an uneven amount of push/pop around the _penter/_pexit we
+        ; can never really make a perfect job of it. sigh.
+        cmp     word [rcx - 5 - 4], 08348h  ; sub rsp, imm8
+        jne     .not_byte_sub
+        cmp     byte [rcx - 5 - 2], 0ech
+        jne     .not_byte_sub
+        movzx   eax, byte [rcx - 5 - 1]     ; imm8
+        add     rdx, rax
+        jmp     .call_prf_enter
+.not_byte_sub:
+        cmp     word [rcx - 5 - 7], 08148h  ; sub rsp, imm32
+        jne     .not_dword_sub
+        cmp     byte [rcx - 5 - 5], 0ech
+        jne     .not_dword_sub
+        mov     eax, [rcx - 5 - 4]          ; imm32
+        add     rdx, rax
+;        jmp     .call_prf_enter
+.not_dword_sub:
+.call_prf_enter:
+        call    KPRF_ENTER
+        jmp     common_return_path
+
+
+;;
+; On x86 the call to this function has been observed to be put right before
+; return instruction. This fact matters since since we have to calc the same
+; stack address as in _penter.
+;
+; Thus the stack layout is as follows:
+;       24      return address of the calling function.
+;       20      our return address - the address of the calling function + 5.
+;       1c      eax
+;       18      edx
+;       14      eflags
+;       10      ecx
+;       c       tsc high       - param 3
+;       8       tsc low
+;       4       frame pointer  - param 2
+;       0       function ptr   - param 1
+;
+;
+align 16
+_pexit:
+        ; save volatile register and get the time stamp.
+        push    rax
+        push    rdx
+        rdtsc
+        pushfq
+        push    rcx
+        push    r8
+        push    r9
+        push    r10
+        push    r11
+        sub     rsp, 28h                ; rsp is unaligned at this point (8 pushes).
+                                        ; reserve 20h for spill, and 8 bytes for ts.
+
+        ; setting up the enter call frame
+        mov     r8d, edx
+        shl     r8, 32
+        or      r8, rax                 ; param 3 - the timestamp
+        mov     [rsp + 20h], r8         ; save the tsc for later use.
+        lea     rdx, [rsp + 8*8 + 28h]  ; Param 2 - frame pointer.
+        mov     rcx, [rdx]              ; Param 1 - The function address
+
+        ; MSC some times put the _pexit before the add rsp, xxh. To try match up with
+        ; any adjustments made in _penter, we'll try detect this.
+        cmp     word [rcx], 08348h      ; add rsp, imm8
+        jne     .not_byte_sub
+        cmp     byte [rcx + 2], 0c4h
+        jne     .not_byte_sub
+        movzx   eax, byte [rcx + 3]     ; imm8
+        add     rdx, rax
+        jmp     .call_prf_leave
+.not_byte_sub:
+        cmp     word [rcx], 08148h      ; add rsp, imm32
+        jne     .not_dword_sub
+        cmp     byte [rcx + 2], 0c4h
+        jne     .not_dword_sub
+        mov     eax, [rcx + 3]          ; imm32
+        add     rdx, rax
+;        jmp     .call_prf_leave
+.not_dword_sub:
+.call_prf_leave:
+        call    KPRF_LEAVE
+        jmp common_return_path
+
+
+;;
+; This is the common return path for both the enter and exit hooks.
+; It's kept common because we can then use the same overhead adjustment
+; and save some calibration efforts. It also saves space :-)
+align 16
+common_return_path:
+        ; Update overhead
+        test    rax, rax
+        jz      common_no_overhead
+        cmp     byte [g_fCalibrated wrt rip], 0
+        jnz     common_overhead
+        call    calibrate
+common_overhead:
+        mov     rcx, rax                ; rcx <- pointer to overhead counter.
+        mov     eax, [g_OverheadAdj wrt rip]; apply the adjustment before reading tsc
+        sub     [rsp + 20h], rax
+
+        rdtsc
+        shl     rdx, 32
+        or      rdx, rax                ; rdx = 64-bit timestamp
+        sub     rdx, [rsp + 20h]        ; rdx = elapsed
+        lock add [rcx], rdx             ; update counter.
+common_no_overhead:
+
+        ; restore volatile registers.
+        add     rsp, 28h
+        pop     r11
+        pop     r10
+        pop     r9
+        pop     r8
+        pop     rcx
+        popfq
+        pop     rdx
+        pop     rax
+        ret
+
+;;
+; Data rsi points to while we're calibrating.
+struc CALIBDATA
+    .Overhead   resq 1
+    .Profiled   resq 1
+    .EnterTS    resq 1
+    .Min        resq 1
+endstruc
+
+
+
+align 16
+;;
+; Do necessary calibrations.
+;
+calibrate:
+        ; prolog - save everything
+        push    rbp
+        pushfq
+        push    rax                     ; pushaq
+        push    rbx
+        push    rcx
+        push    rdx
+        push    rdi
+        push    rsi
+        push    r8
+        push    r9
+        push    r10
+        push    r11
+        push    r12
+        push    r13
+        push    r14
+        push    r15
+        mov     rbp, rsp
+
+        sub     rsp, CALIBDATA_size
+        mov     rsi, rsp                ; rsi points to the CALIBDATA
+
+        and     rsp, -16
+
+        ;
+        ; Indicate that we have finished calibrating.
+        ;
+        mov     eax, 1
+        xchg    dword [g_fCalibrated wrt rip], eax
+
+        ;
+        ; The outer loop - find the right adjustment.
+        ;
+        mov     ebx, 200h               ; loop counter.
+calib_outer_loop:
+
+        ;
+        ; The inner loop - calls the function number of times to establish a
+        ;                  good minimum value
+        ;
+        mov     ecx, 200h
+        mov     dword [rsi + CALIBDATA.Min], 0ffffffffh
+        mov     dword [rsi + CALIBDATA.Min + 4], 07fffffffh
+calib_inner_loop:
+
+        ; zero the overhead and profiled times.
+        xor     eax, eax
+        mov     [rsi + CALIBDATA.Overhead], rax
+        mov     [rsi + CALIBDATA.Profiled], rax
+        call    calib_nullproc
+
+        ; subtract the overhead
+        mov     rax, [rsi + CALIBDATA.Profiled]
+        sub     rax, [rsi + CALIBDATA.Overhead]
+
+        ; update the minimum value.
+        bt      rax, 63
+        jc near calib_outer_dec        ; if negative, just simplify and shortcut
+        cmp     rax, [rsi + CALIBDATA.Min]
+        jge     calib_inner_next
+calib_inner_update_minimum:
+        mov     [rsi + CALIBDATA.Min], rax
+calib_inner_next:
+        loop    calib_inner_loop
+
+        ; Is the minimum value acceptable?
+        test    dword [rsi + CALIBDATA.Min + 4], 80000000h
+        jnz     calib_outer_dec         ; simplify if negative.
+        cmp     dword [rsi + CALIBDATA.Min + 4], 0
+        jnz     calib_outer_inc         ; this shouldn't be possible
+        cmp     dword [rsi + CALIBDATA.Min], 1fh
+        jbe     calib_outer_dec         ; too low - 2 ticks per pair is the minimum!
+        ;cmp     dword [rsi + CALIBDATA.Min], 30h
+        ;jbe     calib_done              ; this is fine!
+        cmp     dword [rsi + CALIBDATA.Min], 70h ; - a bit weird...
+        jbe     calib_outer_next         ; do the full 200h*200h iteration
+calib_outer_inc:
+        inc     dword [g_OverheadAdj wrt rip]
+        jmp     calib_outer_next
+calib_outer_dec:
+        cmp     dword [g_OverheadAdj wrt rip], 1
+        je      calib_done
+        dec     dword [g_OverheadAdj wrt rip]
+calib_outer_next:
+        dec     ebx
+        jnz     calib_outer_loop
+calib_done:
+
+        ; epilog - restore it all.
+        mov     rsp, rbp
+        pop     r15
+        pop     r14
+        pop     r13
+        pop     r12
+        pop     r11
+        pop     r10
+        pop     r9
+        pop     r8
+        pop     rsi
+        pop     rdi
+        pop     rdx
+        pop     rcx
+        pop     rbx
+        pop     rax
+        popfq
+        pop     rbp
+        ret
+
+
+
+
+;;
+; The calibration _penter - this must be identical to the real thing except for the KPRF call.
+align 16
+calib_penter:
+        ; This part must be identical past the rdtsc.
+        push    rax
+        push    rdx
+        rdtsc
+        pushfq
+        push    rcx
+        push    r8
+        push    r9
+        push    r10
+        push    r11
+        sub     rsp, 28h                ; rsp is unaligned at this point (8 pushes).
+                                        ; reserve 20h for spill, and 8 bytes for ts.
+
+        ; store the entry / stack frame.
+        mov     r8d, edx
+        shl     r8, 32
+        or      r8, rax
+        mov     [rsp + 20h], r8
+
+        mov     [rsi + CALIBDATA.EnterTS], r8
+
+        lea     rax, [rsi + CALIBDATA.Overhead]
+        jmp     common_overhead
+
+
+;;
+; The calibration _pexit - this must be identical to the real thing except for the KPRF call.
+align 16
+calib_pexit:
+        ; This part must be identical past the rdtsc.
+        push    rax
+        push    rdx
+        rdtsc
+        pushfq
+        push    rcx
+        push    r8
+        push    r9
+        push    r10
+        push    r11
+        sub     rsp, 28h                ; rsp is unaligned at this point (8 pushes).
+                                        ; reserve 20h for spill, and 8 bytes for ts.
+
+        ; store the entry / stack frame.
+        mov     r8d, edx
+        shl     r8, 32
+        or      r8, rax
+        mov     [rsp + 20h], r8
+
+        sub     r8, [rsi + CALIBDATA.EnterTS]
+        add     [rsi + CALIBDATA.Profiled], r8
+
+        lea     rax, [rsi + CALIBDATA.EnterTS]
+        jmp     common_overhead
+
+
+;;
+; The 'function' we're profiling.
+; The general idea is that each pair should take something like 2-10 ticks.
+;
+; (Btw. If we don't use multiple pairs here, we end up with the wrong result.)
+align 16
+calib_nullproc:
+        call    calib_penter ;0
+        call    calib_pexit
+
+        call    calib_penter ;1
+        call    calib_pexit
+
+        call    calib_penter ;2
+        call    calib_pexit
+
+        call    calib_penter ;3
+        call    calib_pexit
+
+        call    calib_penter ;4
+        call    calib_pexit
+
+        call    calib_penter ;5
+        call    calib_pexit
+
+        call    calib_penter ;6
+        call    calib_pexit
+
+        call    calib_penter ;7
+        call    calib_pexit
+
+        call    calib_penter ;8
+        call    calib_pexit
+
+        call    calib_penter ;9
+        call    calib_pexit
+
+        call    calib_penter ;a
+        call    calib_pexit
+
+        call    calib_penter ;b
+        call    calib_pexit
+
+        call    calib_penter ;c
+        call    calib_pexit
+
+        call    calib_penter ;d
+        call    calib_pexit
+
+        call    calib_penter ;e
+        call    calib_pexit
+
+        call    calib_penter ;f
+        call    calib_pexit
+        ret
+
+
+;
+; Dummy stack check function.
+;
+global __chkstk
+__chkstk:
+    ret
diff --git a/src/lib/kStuff/kProfiler2/prfcore.cpp.h b/src/lib/kStuff/kProfiler2/prfcore.cpp.h
new file mode 100644
index 0000000..ac19eb7
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/prfcore.cpp.h
@@ -0,0 +1,657 @@
+/* $Id: prfcore.cpp.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kProfiler Mark 2 - Core Code Template.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * Gets a function, create a new one if necessary.
+ */
+static KPRF_TYPE(P,FUNC) KPRF_NAME(GetFunction)(KPRF_TYPE(P,HDR) pHdr, KPRF_TYPE(,UPTR) uPC)
+{
+    /*
+     * Perform a binary search of the function lookup table.
+     */
+    KPRF_TYPE(P,FUNC) paFunctions = KPRF_OFF2PTR(P,FUNC, pHdr->offFunctions, pHdr);
+
+    KPRF_FUNCS_READ_LOCK();
+    KI32 iStart = 0;
+    KI32 iLast  = pHdr->cFunctions - 1;
+    KI32 i      = iLast / 2;
+    for (;;)
+    {
+        KU32 iFunction = pHdr->aiFunctions[i];
+        KPRF_TYPE(,IPTR) iDiff = uPC - paFunctions[iFunction].uEntryPtr;
+        if (!iDiff)
+        {
+            KPRF_FUNCS_READ_UNLOCK();
+            return &paFunctions[iFunction];
+        }
+        if (iLast == iStart)
+            break;
+        if (iDiff < 0)
+            iLast = i - 1;
+        else
+            iStart = i + 1;
+        if (iLast < iStart)
+            break;
+        i = iStart + (iLast - iStart) / 2;
+    }
+    KPRF_FUNCS_READ_UNLOCK();
+
+    /*
+     * It wasn't found, try add it.
+     */
+    if (pHdr->cFunctions < pHdr->cMaxFunctions)
+        return KPRF_NAME(NewFunction)(pHdr, uPC);
+    return NULL;
+}
+
+
+/**
+ * Unwind one frame.
+ */
+static KU64* KPRF_NAME(UnwindOne)(KPRF_TYPE(P,HDR) pHdr, KPRF_TYPE(P,STACK) pStack, KPRF_TYPE(,UPTR) uPC, KU64 TS)
+{
+    /*
+     * Pop off the frame and update the frame below / thread.
+     */
+    KPRF_TYPE(P,FRAME) pFrame = &pStack->aFrames[--pStack->cFrames];
+    KU64 *pCurOverheadTicks;
+    if (pStack->cFrames)
+    {
+        KPRF_TYPE(P,FRAME) pTopFrame = pFrame - 1;
+        pTopFrame->OverheadTicks += pFrame->OverheadTicks + pFrame->CurOverheadTicks;
+        pTopFrame->SleepTicks    += pFrame->SleepTicks;
+        pTopFrame->OnTopOfStackStart = TS;
+        pTopFrame->CurOverheadTicks  = 0;
+
+        pCurOverheadTicks = &pTopFrame->CurOverheadTicks;
+    }
+    else
+    {
+        KPRF_TYPE(P,THREAD) pThread = KPRF_OFF2PTR(P,THREAD, pStack->offThread, pHdr);
+        pThread->ProfiledTicks  += TS - pFrame->OnStackStart - pFrame->CurOverheadTicks - pFrame->OverheadTicks - pFrame->SleepTicks;
+        pThread->OverheadTicks  += pFrame->OverheadTicks + pFrame->CurOverheadTicks;
+        pThread->SleepTicks     += pFrame->SleepTicks;
+
+        pCurOverheadTicks = &pThread->OverheadTicks;
+    }
+
+    /*
+     * Update the function (if any).
+     */
+    if (pFrame->offFunction)
+    {
+        KPRF_TYPE(P,FUNC) pFunc = KPRF_OFF2PTR(P,FUNC, pFrame->offFunction, pHdr);
+
+        /* Time on stack */
+        KU64 Ticks = TS - pFrame->OnStackStart;
+        Ticks -= pFrame->OverheadTicks + pFrame->CurOverheadTicks + pFrame->SleepTicks;
+/** @todo adjust overhead */
+KPRF_ASSERT(!(Ticks >> 63));
+        if (pFunc->OnStack.MinTicks > Ticks)
+            KPRF_ATOMIC_SET64(&pFunc->OnStack.MinTicks, Ticks);
+        if (pFunc->OnStack.MaxTicks < Ticks)
+            KPRF_ATOMIC_SET64(&pFunc->OnStack.MaxTicks, Ticks);
+        KPRF_ATOMIC_ADD64(&pFunc->OnStack.SumTicks, Ticks);
+
+        /* Time on top of stack */
+        Ticks = TS - pFrame->OnTopOfStackStart;
+        Ticks -= pFrame->CurOverheadTicks;
+        Ticks += pFrame->OnTopOfStackTicks;
+/** @todo adjust overhead */
+KPRF_ASSERT(!(Ticks >> 63));
+        if (pFunc->OnTopOfStack.MinTicks > Ticks)
+            KPRF_ATOMIC_SET64(&pFunc->OnTopOfStack.MinTicks, Ticks);
+        if (pFunc->OnTopOfStack.MaxTicks < Ticks)
+            KPRF_ATOMIC_SET64(&pFunc->OnTopOfStack.MaxTicks, Ticks);
+        KPRF_ATOMIC_ADD64(&pFunc->OnTopOfStack.SumTicks, Ticks);
+
+        /* calls */
+        if (pFrame->cCalls)
+            KPRF_ATOMIC_ADD64(&pFunc->cCalls, pFrame->cCalls);
+    }
+
+    return pCurOverheadTicks;
+}
+
+
+/**
+ * Unwinds the stack.
+ *
+ * On MSC+AMD64 we have to be very very careful here, because the uFramePtr cannot be trusted.
+ */
+static KU64* KPRF_NAME(UnwindInt)(KPRF_TYPE(P,HDR) pHdr, KPRF_TYPE(P,STACK) pStack, KPRF_TYPE(,UPTR) uPC, KPRF_TYPE(,UPTR) uFramePtr, KU64 TS)
+{
+    /** @todo need to deal with alternative stacks! */
+
+    /*
+     * Pop the stack until we're down below the current frame (uFramePtr).
+     */
+    KI32 iFrame = pStack->cFrames - 1;
+    KPRF_TYPE(P,FRAME) pFrame = &pStack->aFrames[iFrame];
+
+    /* the most frequent case first. */
+#if K_OS == K_OS_WINDOWS && K_ARCH == K_ARCH_AMD64
+    if (    uFramePtr == pFrame->uFramePtr
+        ||  (   pFrame->uFramePtr < uFramePtr
+             && iFrame > 0
+             && pFrame[-1].uFramePtr > uFramePtr))
+        return KPRF_NAME(UnwindOne)(pHdr, pStack, uPC, TS);
+#else
+    if (uFramePtr == pFrame->uFramePtr)
+        return KPRF_NAME(UnwindOne)(pHdr, pStack, uPC, TS);
+#endif
+
+    /* none?  */
+    if (pFrame->uFramePtr > uFramePtr)
+        return &pFrame->CurOverheadTicks;
+
+    /* one or more, possibly all */
+    KU64 *pCurOverheadTicks = KPRF_NAME(UnwindOne)(pHdr, pStack, uPC, TS);
+    pFrame--;
+    if (    iFrame > 0
+#if K_OS == K_OS_WINDOWS && K_ARCH == K_ARCH_AMD64
+        &&  pFrame->uFramePtr <= uFramePtr
+        &&  pFrame[-1].uFramePtr > uFramePtr)
+#else
+        &&  pFrame->uFramePtr <= uFramePtr)
+#endif
+    {
+        KPRF_TYPE(P,THREAD) pThread = KPRF_OFF2PTR(P,THREAD, pStack->offThread, pHdr);
+        pThread->cUnwinds++;        /* (This is the reason for what looks like a bad loop unrolling.) */
+
+        pCurOverheadTicks = KPRF_NAME(UnwindOne)(pHdr, pStack, uPC, TS);
+        iFrame -= 2;
+        pFrame--;
+#if K_OS == K_OS_WINDOWS && K_ARCH == K_ARCH_AMD64
+        while (     iFrame > 0
+               &&   pFrame->uFramePtr <= uFramePtr
+               &&   pFrame[-1].uFramePtr > uFramePtr)
+#else
+        while (     iFrame >= 0
+               &&   pFrame->uFramePtr <= uFramePtr)
+#endif
+        {
+            pCurOverheadTicks = KPRF_NAME(UnwindOne)(pHdr, pStack, uPC, TS);
+            iFrame--;
+            pFrame--;
+        }
+    }
+
+    return pCurOverheadTicks;
+}
+
+
+
+/**
+ * Enter function.
+ *
+ * @returns Where to account overhead.
+ * @returns NULL if profiling is inactive.
+ *
+ * @param   uPC         The program counter register. (not relative)
+ * @param   uFramePtr   The stack frame address. This must match the one passed to kPrfLeave. (not relative)
+ * @param   TS          The timestamp when we entered into the profiler.
+ *                      This must not be modified touched!
+ *
+ * @internal ?
+ */
+KPRF_DECL_FUNC(KU64 *, Enter)(KPRF_TYPE(,UPTR) uPC, KPRF_TYPE(,UPTR) uFramePtr, const KU64 TS)
+{
+    /*
+     * Is profiling active ?
+     */
+    if (!KPRF_IS_ACTIVE())
+        return NULL;
+
+    /*
+     * Get the header and adjust input addresses.
+     */
+    KPRF_TYPE(P,HDR)    pHdr = KPRF_GET_HDR();
+    if (!pHdr)
+        return NULL;
+    const KPRF_TYPE(,UPTR) uBasePtr = pHdr->uBasePtr;
+    if (uBasePtr)
+    {
+        uFramePtr -= uBasePtr;
+        uPC       -= uBasePtr;
+    }
+
+    /*
+     * Get the current thread. Reject unknown, inactive (in whatever way),
+     * and thread which has performed a stack switch.
+     */
+    KPRF_TYPE(P,THREAD) pThread = KPRF_GET_THREAD();
+    if (!pThread)
+        return NULL;
+    KPRF_TYPE(,THREADSTATE) enmThreadState = pThread->enmState;
+    if (    enmThreadState != KPRF_TYPE(,THREADSTATE_ACTIVE)
+        &&  enmThreadState != KPRF_TYPE(,THREADSTATE_OVERFLOWED)
+        )
+        return NULL;
+    if (pThread->uStackBasePtr < uFramePtr)                                         /* ASSUMES stack direction */
+    {
+        pThread->cStackSwitchRejects++;
+        return NULL;
+    }
+    pThread->enmState = KPRF_TYPE(,THREADSTATE_SUSPENDED);
+
+
+    /*
+     * Update the thread statistics.
+     */
+    pThread->cCalls++;
+    KPRF_TYPE(,UPTR) cbStack = pThread->uStackBasePtr - uFramePtr;                 /* ASSUMES stack direction */
+    if (pThread->cbMaxStack < cbStack)
+        pThread->cbMaxStack = cbStack;
+
+    /*
+     * Check if an longjmp or throw has taken place.
+     * This check will not work if a stack switch has taken place (can fix that later).
+     */
+    KPRF_TYPE(P,STACK) pStack = KPRF_OFF2PTR(P,STACK, pThread->offStack, pHdr);
+    KU32 iFrame = pStack->cFrames;
+    KPRF_TYPE(P,FRAME) pFrame = &pStack->aFrames[iFrame];
+    if (    iFrame
+#if K_OS == K_OS_WINDOWS && K_ARCH == K_ARCH_AMD64
+        &&  0) /* don't bother her yet because of _penter/_pexit frame problems. */
+#else
+        &&  pThread->uStackBasePtr >= uFramePtr                                     /* ASSUMES stack direction */
+        &&  pFrame[-1].uFramePtr + (KPRF_BITS - 8) / 8 < uFramePtr)                 /* ASSUMES stack direction */
+#endif
+    {
+        KPRF_NAME(UnwindInt)(pHdr, pStack, uPC, uFramePtr, TS);
+        iFrame = pStack->cFrames;
+    }
+
+    /*
+     * Allocate a new stack frame.
+     */
+    if (iFrame >= pHdr->cMaxStackFrames)
+    {
+        /* overflow */
+        pThread->enmState = KPRF_TYPE(,THREADSTATE_OVERFLOWED);
+        pThread->cOverflows += enmThreadState != KPRF_TYPE(,THREADSTATE_OVERFLOWED);
+        return &pStack->aFrames[iFrame - 1].CurOverheadTicks;
+    }
+    pStack->cFrames++;
+
+    /*
+     * Update the old top frame if any.
+     */
+    if (iFrame)
+    {
+        KPRF_TYPE(P,FRAME) pOldFrame = pFrame - 1;
+        pOldFrame->OnTopOfStackTicks += TS - pOldFrame->OnTopOfStackStart;
+        pOldFrame->cCalls++;
+    }
+
+    /*
+     * Fill in the new frame.
+     */
+    pFrame->CurOverheadTicks    = 0;
+    pFrame->OverheadTicks       = 0;
+    pFrame->SleepTicks          = 0;
+    pFrame->OnStackStart        = TS;
+    pFrame->OnTopOfStackStart   = TS;
+    pFrame->OnTopOfStackTicks   = 0;
+    pFrame->cCalls              = 0;
+    pFrame->uFramePtr           = uFramePtr;
+
+    /*
+     * Find the relevant function.
+     */
+    KPRF_TYPE(P,FUNC) pFunc = KPRF_NAME(GetFunction)(pHdr, uPC);
+    if (pFunc)
+    {
+        pFrame->offFunction = KPRF_PTR2OFF(pFunc, pHdr);
+        pFunc->cOnStack++;
+    }
+    else
+        pFrame->offFunction = 0;
+
+    /*
+     * Nearly done, We only have to reactivate the thread and account overhead.
+     * The latter is delegated to the caller.
+     */
+    pThread->enmState = KPRF_TYPE(,THREADSTATE_ACTIVE);
+    return &pFrame->CurOverheadTicks;
+}
+
+
+/**
+ * Leave function.
+ *
+ * @returns Where to account overhead.
+ * @returns NULL if profiling is inactive.
+ *
+ * @param   uPC         The program counter register.
+ * @param   uFramePtr   The stack frame address. This must match the one passed to kPrfEnter.
+ * @param   TS          The timestamp when we entered into the profiler.
+ *                      This must not be modified because the caller could be using it!
+ * @internal
+ */
+KPRF_DECL_FUNC(KU64 *, Leave)(KPRF_TYPE(,UPTR) uPC, KPRF_TYPE(,UPTR) uFramePtr, const KU64 TS)
+{
+    /*
+     * Is profiling active ?
+     */
+    if (!KPRF_IS_ACTIVE())
+        return NULL;
+
+    /*
+     * Get the header and adjust input addresses.
+     */
+    KPRF_TYPE(P,HDR)    pHdr = KPRF_GET_HDR();
+    if (!pHdr)
+        return NULL;
+    const KPRF_TYPE(,UPTR) uBasePtr = pHdr->uBasePtr;
+    if (uBasePtr)
+    {
+        uFramePtr -= uBasePtr;
+        uPC       -= uBasePtr;
+    }
+
+    /*
+     * Get the current thread and suspend profiling of the thread until we leave this function.
+     * Also reject threads which aren't active in some way.
+     */
+    KPRF_TYPE(P,THREAD) pThread = KPRF_GET_THREAD();
+    if (!pThread)
+        return NULL;
+    KPRF_TYPE(,THREADSTATE) enmThreadState = pThread->enmState;
+    if (    enmThreadState != KPRF_TYPE(,THREADSTATE_ACTIVE)
+        &&  enmThreadState != KPRF_TYPE(,THREADSTATE_OVERFLOWED)
+        )
+        return NULL;
+    KPRF_TYPE(P,STACK) pStack = KPRF_OFF2PTR(P,STACK, pThread->offStack, pHdr);
+    if (!pStack->cFrames)
+        return NULL;
+    pThread->enmState = KPRF_TYPE(,THREADSTATE_SUSPENDED);
+
+    /*
+     * Unwind the stack down to and including the entry indicated by uFramePtr.
+     * Leave it to the caller to update the overhead.
+     */
+    KU64 *pCurOverheadTicks = KPRF_NAME(UnwindInt)(pHdr, pStack, uPC, uFramePtr, TS);
+
+    pThread->enmState = enmThreadState;
+    return pCurOverheadTicks;
+}
+
+
+/**
+ * Register the current thread.
+ *
+ * A thread can only be profiled if it has been registered by a call to this function.
+ *
+ * @param   uPC             The program counter register.
+ * @param   uStackBasePtr   The base of the stack.
+ */
+KPRF_DECL_FUNC(KPRF_TYPE(P,THREAD), RegisterThread)(KPRF_TYPE(,UPTR) uStackBasePtr, const char *pszName)
+{
+    /*
+     * Get the header and adjust input address.
+     * (It doesn't matter whether we're active or not.)
+     */
+    KPRF_TYPE(P,HDR)    pHdr = KPRF_GET_HDR();
+    if (!pHdr)
+        return NULL;
+    const KPRF_TYPE(,UPTR) uBasePtr = pHdr->uBasePtr;
+    if (uBasePtr)
+        uStackBasePtr -= uBasePtr;
+
+
+    /*
+     * Allocate a thread and a stack.
+     */
+    KPRF_THREADS_LOCK();
+    if (pHdr->cThreads < pHdr->cMaxThreads)
+    {
+        KPRF_TYPE(P,STACK) pStack = KPRF_OFF2PTR(P,STACK, pHdr->offStacks, pHdr);
+        KU32               cLeft = pHdr->cMaxStacks;
+        do
+        {
+            if (!pStack->offThread)
+            {
+                /* init the stack. */
+                pStack->cFrames   = 0;
+                pStack->offThread = pHdr->offThreads + pHdr->cbThread * pHdr->cThreads++;
+                pHdr->cStacks++;
+
+                /* init the thread */
+                KPRF_TYPE(P,THREAD) pThread = KPRF_OFF2PTR(P,THREAD, pStack->offThread, pHdr);
+                pThread->ThreadId       = KPRF_GET_THREADID();
+                unsigned i = 0;
+                if (pszName)
+                    while (i < sizeof(pThread->szName) - 1 && *pszName)
+                        pThread->szName[i++] = *pszName++;
+                while (i < sizeof(pThread->szName))
+                    pThread->szName[i++] = '\0';
+                pThread->enmState       = KPRF_TYPE(,THREADSTATE_SUSPENDED);
+                pThread->Reserved0      = KPRF_TYPE(,THREADSTATE_TERMINATED);
+                pThread->uStackBasePtr  = uStackBasePtr;
+                pThread->cbMaxStack     = 0;
+                pThread->cCalls         = 0;
+                pThread->cOverflows     = 0;
+                pThread->cStackSwitchRejects = 0;
+                pThread->cUnwinds       = 0;
+                pThread->ProfiledTicks  = 0;
+                pThread->OverheadTicks  = 0;
+                pThread->SleepTicks     = 0;
+                pThread->offStack       = KPRF_PTR2OFF(pStack, pHdr);
+
+
+                /* set the thread and make it active. */
+                KPRF_THREADS_UNLOCK();
+                KPRF_SET_THREAD(pThread);
+                pThread->enmState = KPRF_TYPE(,THREADSTATE_ACTIVE);
+                return pThread;
+            }
+
+            /* next */
+            pStack = KPRF_TYPE(P,STACK)(((KPRF_TYPE(,UPTR))pStack + pHdr->cbStack));
+        } while (--cLeft > 0);
+    }
+
+    KPRF_THREADS_UNLOCK();
+    return NULL;
+}
+
+
+/**
+ * Terminates a thread.
+ *
+ * To terminate the current thread use DeregisterThread(), because that
+ * cleans up the TLS entry too.
+ *
+ * @param   pHdr        The profiler data set header.
+ * @param   pThread     The thread to terminate.
+ * @param   TS          The timestamp to use when terminating the thread.
+ */
+KPRF_DECL_FUNC(void, TerminateThread)(KPRF_TYPE(P,HDR) pHdr, KPRF_TYPE(P,THREAD) pThread, KU64 TS)
+{
+    if (pThread->enmState == KPRF_TYPE(,THREADSTATE_TERMINATED))
+        return;
+    pThread->enmState = KPRF_TYPE(,THREADSTATE_TERMINATED);
+
+    /*
+     * Unwind the entire stack.
+     */
+    if (pThread->offStack)
+    {
+        KPRF_TYPE(P,STACK) pStack = KPRF_OFF2PTR(P,STACK, pThread->offStack, pHdr);
+        for (KU32 cFrames = pStack->cFrames; cFrames > 0; cFrames--)
+            KPRF_NAME(UnwindOne)(pHdr, pStack, 0, TS);
+
+        /*
+         * Free the stack.
+         */
+        pThread->offStack = 0;
+        KPRF_THREADS_LOCK();
+        pStack->offThread = 0;
+        pHdr->cStacks--;
+        KPRF_THREADS_UNLOCK();
+    }
+}
+
+
+/**
+ * Deregister (terminate) the current thread.
+ */
+KPRF_DECL_FUNC(void, DeregisterThread)(void)
+{
+    KU64 TS = KPRF_NOW();
+
+    /*
+     * Get the header, then get the thread and mark it terminated.
+     * (It doesn't matter whether we're active or not.)
+     */
+    KPRF_TYPE(P,HDR)    pHdr = KPRF_GET_HDR();
+    if (!pHdr)
+        return;
+
+    KPRF_TYPE(P,THREAD) pThread = KPRF_GET_THREAD();
+    KPRF_SET_THREAD(NULL);
+    if (!pThread)
+        return;
+    KPRF_NAME(TerminateThread)(pHdr, pThread, TS);
+}
+
+
+/**
+ * Resumes / restarts a thread.
+ *
+ * @param   fReset  If set the stack is reset.
+ */
+KPRF_DECL_FUNC(void, ResumeThread)(int fReset)
+{
+    KU64 TS = KPRF_NOW();
+
+    /*
+     * Get the header, then get the thread and mark it terminated.
+     * (It doesn't matter whether we're active or not.)
+     */
+    KPRF_TYPE(P,HDR)    pHdr = KPRF_GET_HDR();
+    if (!pHdr)
+        return;
+
+    KPRF_TYPE(P,THREAD) pThread = KPRF_GET_THREAD();
+    if (!pThread)
+        return;
+    if (pThread->enmState != KPRF_TYPE(,THREADSTATE_SUSPENDED))
+        return;
+
+    /*
+     * Reset (unwind) the stack?
+     */
+    KPRF_TYPE(P,STACK) pStack = KPRF_OFF2PTR(P,STACK, pThread->offStack, pHdr);
+    if (fReset)
+    {
+        KU32 cFrames = pStack->cFrames;
+        while (cFrames-- > 0)
+            KPRF_NAME(UnwindOne)(pHdr, pStack, 0, TS);
+    }
+    /*
+     * If we've got any thing on the stack, we'll have to stop the sleeping period.
+     */
+    else if (pStack->cFrames > 0)
+    {
+        KPRF_TYPE(P,FRAME) pFrame = &pStack->aFrames[pStack->cFrames - 1];
+
+        /* update the sleeping time and set the start of the new top-of-stack period. */
+        pFrame->SleepTicks += TS - pFrame->OnTopOfStackStart;
+        pFrame->OnTopOfStackStart = TS;
+    }
+    /** @todo we're not accounting overhead here! */
+
+    /*
+     * We're done, switch the thread to active state.
+     */
+    pThread->enmState = KPRF_TYPE(,THREADSTATE_ACTIVE);
+}
+
+
+/**
+ * Suspend / completes a thread.
+ *
+ * The thread will be in a suspend state where the time will be accounted for as sleeping.
+ *
+ * @param   fUnwind     If set the stack is unwound and the thread statistics updated.
+ */
+KPRF_DECL_FUNC(void, SuspendThread)(int fUnwind)
+{
+    KU64 TS = KPRF_NOW();
+
+    /*
+     * Get the header, then get the thread and mark it terminated.
+     * (It doesn't matter whether we're active or not.)
+     */
+    KPRF_TYPE(P,HDR)    pHdr = KPRF_GET_HDR();
+    if (!pHdr)
+        return;
+
+    KPRF_TYPE(P,THREAD) pThread = KPRF_GET_THREAD();
+    if (!pThread)
+        return;
+    if (    pThread->enmState != KPRF_TYPE(,THREADSTATE_ACTIVE)
+        &&  pThread->enmState != KPRF_TYPE(,THREADSTATE_OVERFLOWED)
+        &&  (pThread->enmState != KPRF_TYPE(,THREADSTATE_SUSPENDED) || fUnwind))
+        return;
+
+    pThread->enmState = KPRF_TYPE(,THREADSTATE_SUSPENDED);
+
+    /*
+     * Unwind the stack?
+     */
+    KPRF_TYPE(P,STACK) pStack = KPRF_OFF2PTR(P,STACK, pThread->offStack, pHdr);
+    if (fUnwind)
+    {
+        KU32 cFrames = pStack->cFrames;
+        while (cFrames-- > 0)
+            KPRF_NAME(UnwindOne)(pHdr, pStack, 0, TS);
+    }
+    /*
+     * If we've got any thing on the stack, we'll have to record the sleeping period
+     * of the thread. If not we'll ignore it (for now at least).
+     */
+    else if (pStack->cFrames > 0)
+    {
+        KPRF_TYPE(P,FRAME) pFrame = &pStack->aFrames[pStack->cFrames - 1];
+
+        /* update the top of stack time and set the start of the sleep period. */
+        pFrame->OnTopOfStackTicks += TS - pFrame->OnTopOfStackStart;
+        pFrame->OnTopOfStackStart = TS;
+    }
+
+    /** @todo we're not accounting overhead here! */
+}
+
+
diff --git a/src/lib/kStuff/kProfiler2/prfcore.h.h b/src/lib/kStuff/kProfiler2/prfcore.h.h
new file mode 100644
index 0000000..d4413d1
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/prfcore.h.h
@@ -0,0 +1,381 @@
+/* $Id: prfcore.h.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kProfiler Mark 2 - Core Header Template.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/** @def KPRF_NAME
+ * Mixed case name macro.
+ */
+#ifndef KPRF_NAME
+# define KPRF_NAME(Name)        Name
+#endif
+
+/** @def KPRF_TYPE
+ * Upper case type name macro.
+ */
+#ifndef KPRF_TYPE
+# define KPRF_TYPE(Prefix,Name) Prefix##Name
+#endif
+
+/** @type KPRF_DECL_FUNC
+ * The calling convention used.
+ */
+#ifndef KPRF_DECL_FUNC
+# define KPRF_DECL_FUNC(type, name) type name
+#endif
+
+/** @def KPRF_BITS
+ * The bitsize of the format.
+ */
+#ifndef KPRF_BITS
+# define KPRF_BITS  32
+#endif
+
+/** @type UPTR
+ * The basic unsigned interger pointer type.
+ */
+/** @type IPTR
+ * The basic signed interger pointer type.
+ */
+#if KPRF_BITS == 16
+typedef KU16    KPRF_TYPE(,UPTR);
+typedef KI16    KPRF_TYPE(,IPTR);
+#elif KPRF_BITS == 32
+typedef KU32    KPRF_TYPE(,UPTR);
+typedef KI32    KPRF_TYPE(,IPTR);
+#elif KPRF_BITS == 64
+typedef KU64    KPRF_TYPE(,UPTR);
+typedef KI64    KPRF_TYPE(,IPTR);
+#else
+# error "KPRF_BITS has an invalid value. Supported values are 16, 32 and 64."
+#endif
+/** @type KPRF_TYPE(P,UPTR)
+ * Pointer to the basic pointer type.
+ */
+typedef KPRF_TYPE(,UPTR) *KPRF_TYPE(P,UPTR);
+
+
+/**
+ * Various constants.
+ */
+enum KPRF_TYPE(,CONSTANTS)
+{
+    /** Magic for the profiler header. (Unix Epoc) */
+    KPRF_TYPE(,HDR_MAGIC) = 0x19700101
+};
+
+
+/**
+ * The profile data header.
+ */
+typedef struct KPRF_TYPE(,HDR)
+{
+    /** [0] The magic number for file data. (KPRF_TYPE(,HDR_MAGIC)) */
+    KU32                    u32Magic;
+    /** [4] KPRF_BITS. */
+    KU32                    cFormatBits;
+    /** [8] The base address which all pointers should be relative to. */
+    KPRF_TYPE(,UPTR)        uBasePtr;
+#if KPRF_BITS <= 16
+    /** [a] Reserved. */
+    KU16                    u16Reserved;
+#endif
+#if KPRF_BITS <= 32
+    /** [c] Reserved. */
+    KU32                    u32Reserved;
+#endif
+    /** [10] The size of this data set. */
+    KU32                    cb;
+    /** [10] The allocated data set size. */
+    KU32                    cbAllocated;
+
+    /** [18] The max number of functions the function table can hold. */
+    KU32                    cMaxFunctions;
+    /** [1c] The current number of functions in the function table. */
+    KU32                    cFunctions;
+    /** [20] The offset of the function table (relative to this header). */
+    KU32                    offFunctions;
+    /** [24] The size of a function entry. */
+    KU32                    cbFunction;
+
+    /** [28] The max number of bytes the module segments can occupy. */
+    KU32                    cbMaxModSegs;
+    /** [2c] The current size of the module segment records. */
+    KU32                    cbModSegs;
+    /** [30] The offset of the module segment records (relative to this header). */
+    KU32                    offModSegs;
+
+    /** [34] The max number of threads the thread table can contain. */
+    KU32                    cMaxThreads;
+    /** [38] The current number of threads in the thread table. */
+    KU32                    cThreads;
+    /** [3c] The offset of the thread table (relative to this header). */
+    KU32                    offThreads;
+    /** [40] The size of a thread entry. */
+    KU32                    cbThread;
+
+    /** [44] The max number of stacks the stack table can contain. */
+    KU32                    cMaxStacks;
+    /** [48] The max number of stacks.
+     * Unlike the other members, the stacks can be reused. It follows that
+     * this count doesn't specify the number of used slots from the start. */
+    KU32                    cStacks;
+    /** [4c] The offset of the thread table (relative to this header).
+     * This is usually 0 in a stored data set. */
+    KU32                    offStacks;
+    /** [50] The size of a stack. */
+    KU32                    cbStack;
+    /** [54] The maxium stack depth. */
+    KU32                    cMaxStackFrames;
+
+    /** [58] The process commandline.
+     * Might not always apply is will be 0 in those cases. This is normally written
+     * where the stacks used to be.
+     */
+    KU32                    offCommandLine;
+    /** [5c] The length of the command line. (excludes the terminator). */
+    KU32                    cchCommandLine;
+
+    /** [60]  The function lookup table (it contains indexes).
+     * This is sorted by address so that a binary search can be performed.
+     * Access to this table is managed externally, but generally a read/write lock is employed. */
+    KU32                    aiFunctions[1];
+} KPRF_TYPE(,HDR);
+/** Pointer to a profiler data header. */
+typedef KPRF_TYPE(,HDR) *KPRF_TYPE(P,HDR);
+/** Pointer to a const profiler data header. */
+typedef const KPRF_TYPE(,HDR) *KPRF_TYPE(PC,HDR);
+
+
+/**
+ * Time statistics.
+ */
+typedef struct KPRF_TYPE(,TIMESTAT)      /** @todo bad names and descriptions! */
+{
+    /** The minimum period */
+    KU64 volatile           MinTicks;
+    /** The maximum period */
+    KU64 volatile           MaxTicks;
+    /** The sum of all periods. */
+    KU64 volatile           SumTicks;
+} KPRF_TYPE(,TIMESTAT);
+/** Pointer to time statistics. */
+typedef KPRF_TYPE(,TIMESTAT) *KPRF_TYPE(P,TIMESTAT);
+/** Pointer to const time statistics. */
+typedef const KPRF_TYPE(,TIMESTAT) *KPRF_TYPE(PC,TIMESTAT);
+
+
+/**
+ * A Module Segment.
+ */
+typedef struct KPRF_TYPE(,MODSEG)
+{
+    /** The address of the segment. (relative address) */
+    KPRF_TYPE(,UPTR)        uBasePtr;
+    /** The size of the segment minus one (so the entire address space can be covered). */
+    KPRF_TYPE(,UPTR)        cbSegmentMinusOne;
+    /** The segment number. (0 based) */
+    KU32                    iSegment;
+    /** Flag indicating whether this segment is loaded or not.
+     * (A 16-bit value was choosen out of convenience, all that's stored is 0 or 1 anyway.) */
+    KU16                    fLoaded;
+    /** The length of the path.
+     * This is used to calculate the length of the record: offsetof(MODSEG, szPath) + cchPath + 1 */
+    KU16                    cchPath;
+    /** The module name. */
+    char                    szPath[1];
+} KPRF_TYPE(,MODSEG);
+/** Pointer to a module segment. */
+typedef KPRF_TYPE(,MODSEG) *KPRF_TYPE(P,MODSEG);
+/** Pointer to a const module segment. */
+typedef const KPRF_TYPE(,MODSEG) *KPRF_TYPE(PC,MODSEG);
+
+
+/**
+ * The profiler data for a function.
+ */
+typedef struct KPRF_TYPE(,FUNC)
+{
+    /** The entry address of the function. (relative address)
+     * This is the return address of the entry hook (_mcount, _penter, _ProfileHook32, ...). */
+    KPRF_TYPE(,UPTR)        uEntryPtr;
+    /** Offset (relative to the profiler header) of the module segment to which this function belongs. */
+    KU32                    offModSeg;
+
+    /** The number times on the stack. */
+    KU64 volatile           cOnStack;
+    /** The number of calls made from this function. */
+    KU64 volatile           cCalls;
+
+    /** Time on stack. */
+    KPRF_TYPE(,TIMESTAT)    OnStack;
+    /** Time on top of the stack, i.e. executing. */
+    KPRF_TYPE(,TIMESTAT)    OnTopOfStack;
+
+    /** @todo recursion */
+
+} KPRF_TYPE(,FUNC);
+/** Pointer to the profiler data for a function. */
+typedef KPRF_TYPE(,FUNC)       *KPRF_TYPE(P,FUNC);
+/** Pointer to the const profiler data for a function. */
+typedef const KPRF_TYPE(,FUNC) *KPRF_TYPE(PC,FUNC);
+
+
+/**
+ * Stack frame.
+ */
+typedef struct KPRF_TYPE(,FRAME)
+{
+    /** The accumulated overhead.
+     * Over head is accumulated by the parent frame when a child is poped off the stack. */
+    KU64                    OverheadTicks;
+    /** The current (top of stack) overhead. */
+    KU64                    CurOverheadTicks;
+    /** The accumulated sleep ticks.
+     * It's possible to notify the profiler that the thread is being put into a wait/sleep/yield
+     * state. The time spent sleeping is transfered to the parent frame when poping of a child one. */
+    KU64                    SleepTicks;
+    /** The start of the on-stack period. */
+    KU64                    OnStackStart;
+    /** The accumulated time on top (excludes overhead (sleep doesn't apply here obviously)). */
+    KU64                    OnTopOfStackTicks;
+    /** The start of the current on-top-of-stack period.
+     * This is also to mark the start of a sleeping period, the ResumeThread function will always
+     * treat it as the start of the suspend period. */
+    KU64                    OnTopOfStackStart;
+    /** The number of calls made from this stack frame. */
+    KU64                    cCalls;
+    /** Stack address of this frame.
+     * This is used to detect throw and longjmp, and is also used to deal with overflow. (relative address) */
+    KPRF_TYPE(,UPTR)        uFramePtr;
+    /** Offset (relative to the profiler header) to the function record.
+     * This is 0 if we're out of function space. */
+    KU32                    offFunction;
+} KPRF_TYPE(,FRAME);
+/** Pointer to a stack frame. */
+typedef KPRF_TYPE(,FRAME) *KPRF_TYPE(P,FRAME);
+/** Pointer to a const stack frame. */
+typedef const KPRF_TYPE(,FRAME) *KPRF_TYPE(PC,FRAME);
+
+
+/**
+ * Stack.
+ */
+typedef struct KPRF_TYPE(,STACK)
+{
+    /** The offset (relative to the profiler header) of the thread owning the stack.
+     * This is zero if not in use, and non-zero if in use. */
+    KU32                        offThread;
+    /** The number of active stack frames. */
+    KU32                        cFrames;
+    /** The stack frames.
+     * The actual size of this array is specified in the header. */
+    KPRF_TYPE(,FRAME)           aFrames[1];
+} KPRF_TYPE(,STACK);
+/** Pointer to a stack. */
+typedef KPRF_TYPE(,STACK) *KPRF_TYPE(P,STACK);
+/** Pointer to a const stack. */
+typedef const KPRF_TYPE(,STACK) *KPRF_TYPE(PC,STACK);
+
+
+/**
+ * The thread state.
+ */
+typedef enum KPRF_TYPE(,THREADSTATE)
+{
+    /** The thread hasn't been used yet. */
+    KPRF_TYPE(,THREADSTATE_UNUSED) = 0,
+    /** The thread is activly being profiled.
+     * A thread is added in the suspended state and then activated when
+     * starting to execute the first function.
+     */
+    KPRF_TYPE(,THREADSTATE_ACTIVE),
+    /** The thread is currently suspended from profiling.
+     * Upon entering profiler code the thread is suspended, it's reactivated
+     * upon normal return.
+     */
+    KPRF_TYPE(,THREADSTATE_SUSPENDED),
+    /** The thread is currently suspended due of stack overflow.
+     * When we overflow the stack frame array, the thread enter the overflow state. In this
+     * state nothing is profiled but we keep looking for the exit of the top frame. */
+    KPRF_TYPE(,THREADSTATE_OVERFLOWED),
+    /** The thread is terminated.
+     * When we received a thread termination notification the thread is unwinded, statistics
+     * updated and the state changed to terminated. A terminated thread cannot be revivied. */
+    KPRF_TYPE(,THREADSTATE_TERMINATED),
+
+    /** Ensure 32-bit size. */
+    KPRF_TYPE(,THREADSTATE_32BIT_HACK) = 0x7fffffff
+} KPRF_TYPE(,THREADSTATE);
+
+
+/**
+ * Thread statistics and stack.
+ */
+typedef struct KPRF_TYPE(,THREAD)
+{
+    /** The native thread id. */
+    KU64                        ThreadId;
+    /** The thread name. (optional) */
+    char                        szName[32];
+    /** The thread current thread state. */
+    KPRF_TYPE(,THREADSTATE)     enmState;
+    /** Alignment. */
+    KPRF_TYPE(,THREADSTATE)     Reserved0;
+    /** The base pointer of the thread stack. (relative address) */
+    KPRF_TYPE(,UPTR)            uStackBasePtr;
+    /** The maximum depth of the thread stack (bytes). */
+    KPRF_TYPE(,UPTR)            cbMaxStack;
+    /** The number of calls done by this thread. */
+    KU64                        cCalls;
+    /** The number of times the stack overflowed. */
+    KU64                        cOverflows;
+    /** The number of times stack entries has been rejected because of a stack switch. */
+    KU64                        cStackSwitchRejects;
+    /** The number of times the stack has been unwinded more than one frame. */
+    KU64                        cUnwinds;
+
+    /** The profiled ticks. (This does not include sleep or overhead ticks.)
+     * This is the accumulated on-stack values for the final stack frames. */
+    KU64                        ProfiledTicks;
+    /** The accumulated overhead of this thread. */
+    KU64                        OverheadTicks;
+    /** The accumulated sleep ticks for this thread.
+     * See KPRF_TYPE(,FRAME)::SleepTicks for details. */
+    KU64                        SleepTicks;
+
+    /** The offset of the stack. */
+    KU32                        offStack;
+} KPRF_TYPE(,THREAD);
+/** Pointer to a thread. */
+typedef KPRF_TYPE(,THREAD) *KPRF_TYPE(P,THREAD);
+/** Pointer to a const thread. */
+typedef const KPRF_TYPE(,THREAD) *KPRF_TYPE(PC,THREAD);
+
+
diff --git a/src/lib/kStuff/kProfiler2/prfcorefunction.cpp.h b/src/lib/kStuff/kProfiler2/prfcorefunction.cpp.h
new file mode 100644
index 0000000..686b452
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/prfcorefunction.cpp.h
@@ -0,0 +1,127 @@
+/* $Id: prfcorefunction.cpp.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kProfiler Mark 2 - Core NewFunction Code Template.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * Creates a new function.
+ *
+ * @returns Pointer to the new function.
+ * @returns NULL if we're out of space.
+ */
+static KPRF_TYPE(P,FUNC) KPRF_NAME(NewFunction)(KPRF_TYPE(P,HDR) pHdr,KPRF_TYPE(,UPTR) uPC)
+{
+    /*
+     * First find the position of the function (it might actually have been inserted by someone else by now too).
+     */
+    KPRF_FUNCS_WRITE_LOCK();
+
+    KPRF_TYPE(P,FUNC) paFunctions = KPRF_OFF2PTR(P,FUNC, pHdr->offFunctions, pHdr);
+    KI32 iStart = 0;
+    KI32 iLast  = pHdr->cFunctions - 1;
+    KI32 i      = iLast / 2;
+    for (;;)
+    {
+        KU32 iFunction = pHdr->aiFunctions[i];
+        KPRF_TYPE(,IPTR) iDiff = uPC - paFunctions[iFunction].uEntryPtr;
+        if (!iDiff)
+        {
+            KPRF_FUNCS_WRITE_UNLOCK();
+            return &paFunctions[iFunction];
+        }
+        if (iLast == iStart)
+            break;
+        if (iDiff < 0)
+            iLast = i - 1;
+        else
+            iStart = i + 1;
+        if (iLast < iStart)
+            break;
+        i = iStart + (iLast - iStart) / 2;
+    }
+
+    /*
+     * Adjust the index so we're exactly in the right spot.
+     * (I've too much of a headache to figure out if the above loop leaves us where we should be.)
+     */
+    const KI32 iNew = pHdr->cFunctions;
+    if (paFunctions[pHdr->aiFunctions[i]].uEntryPtr > uPC)
+    {
+        while (     i > 0
+               &&   paFunctions[pHdr->aiFunctions[i - 1]].uEntryPtr > uPC)
+            i--;
+    }
+    else
+    {
+        while (     i < iNew
+               &&   paFunctions[pHdr->aiFunctions[i]].uEntryPtr < uPC)
+            i++;
+    }
+
+    /*
+     * Ensure that there still is space for the function.
+     */
+    if (iNew >= (KI32)pHdr->cMaxFunctions)
+    {
+        KPRF_FUNCS_WRITE_UNLOCK();
+        return NULL;
+    }
+    pHdr->cFunctions++;
+    KPRF_TYPE(P,FUNC) pNew = &paFunctions[iNew];
+
+    /* init the new function entry */
+    pNew->uEntryPtr  = uPC;
+    pNew->offModSeg  = 0;
+    pNew->cOnStack   = 0;
+    pNew->cCalls     = 0;
+    pNew->OnStack.MinTicks      = ~(KU64)0;
+    pNew->OnStack.MaxTicks      = 0;
+    pNew->OnStack.SumTicks      = 0;
+    pNew->OnTopOfStack.MinTicks = ~(KU64)0;
+    pNew->OnTopOfStack.MaxTicks = 0;
+    pNew->OnTopOfStack.SumTicks = 0;
+
+    /* shift the function index array and insert the new one. */
+    KI32 j = iNew;
+    while (j > i)
+    {
+        pHdr->aiFunctions[j] = pHdr->aiFunctions[j - 1];
+        j--;
+    }
+    pHdr->aiFunctions[i] = iNew;
+    KPRF_FUNCS_WRITE_UNLOCK();
+
+    /*
+     * Record the module segment (i.e. add it if it's new).
+     */
+    pNew->offModSeg = KPRF_NAME(RecordModSeg)(pHdr, uPC);
+
+    return pNew;
+}
+
diff --git a/src/lib/kStuff/kProfiler2/prfcoreinit.cpp.h b/src/lib/kStuff/kProfiler2/prfcoreinit.cpp.h
new file mode 100644
index 0000000..5a94f46
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/prfcoreinit.cpp.h
@@ -0,0 +1,191 @@
+/* $Id: prfcoreinit.cpp.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kProfiler Mark 2 - Core Initialization Code Template.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * Calculates the size of the profiler data set.
+ *
+ * @returns The size of the data set in bytes.
+ *
+ * @param   cMaxFunctions       The max number of functions.
+ * @param   cbMaxModSeg         The max bytes for module segments.
+ * @param   cMaxThreads         The max number of threads.
+ * @param   cMaxStacks          The max number of stacks. (should be less or equal to the max number of threads)
+ * @param   cMaxStackFrames     The max number of frames on each of the stacks.
+ *
+ * @remark  This function does not input checks, it only aligns it. The caller is
+ *          responsible for the input to make some sense.
+ */
+KPRF_DECL_FUNC(KU32, CalcSize)(KU32 cMaxFunctions, KU32 cbMaxModSegs, KU32 cMaxThreads, KU32 cMaxStacks, KU32 cMaxStackFrames)
+{
+    /*
+     * Normalize input.
+     */
+    KPRF_SETMIN_ALIGN(cMaxFunctions, 16, 16);
+    KPRF_SETMIN_ALIGN(cbMaxModSegs, KPRF_SIZEOF(MODSEG), 32);
+    KPRF_SETMIN_ALIGN(cMaxThreads, 1, 1);
+    KPRF_SETMIN_ALIGN(cMaxStacks, 1, 1);
+    KPRF_SETMIN_ALIGN(cMaxStackFrames, 32, 32);
+
+    /*
+     * Calc the size from the input.
+     * We do not take overflows into account, stupid user means stupid result.
+     */
+    KU32 cb = KPRF_OFFSETOF(HDR, aiFunctions[cMaxFunctions]);
+    KU32 cbTotal = KPRF_ALIGN(cb, 32);
+
+    cb = cMaxFunctions * KPRF_SIZEOF(FUNC);
+    cbTotal += KPRF_ALIGN(cb, 32);
+
+    cbTotal += cbMaxModSegs;
+
+    cb = cMaxThreads * KPRF_SIZEOF(THREAD);
+    cbTotal += KPRF_ALIGN(cb, 32);
+
+    cb = cMaxStacks * KPRF_SIZEOF(STACK);
+    cbTotal += KPRF_ALIGN(cb, 32);
+
+    cb = cMaxStackFrames * cMaxStacks * KPRF_SIZEOF(FRAME);
+    cbTotal += KPRF_ALIGN(cb, 32);
+
+    return cbTotal;
+}
+
+
+/**
+ * Initializes the profiler data set.
+ *
+ * @returns Pointer to the initialized profiler header on success.
+ * @returns NULL if the input doesn't add up.
+ *
+ * @param   pvData              Where to initialize the profiler data set.
+ * @param   cbData              The size of the available data.
+ * @param   cMaxFunctions       The max number of functions.
+ * @param   cbMaxModSeg         The max bytes for module segments.
+ * @param   cMaxThreads         The max number of threads.
+ * @param   cMaxStacks          The max number of stacks. (should be less or equal to the max number of threads)
+ * @param   cMaxStackFrames     The max number of frames on each of the stacks.
+ *
+ */
+KPRF_DECL_FUNC(KPRF_TYPE(P,HDR), Init)(void *pvData, KU32 cbData, KU32 cMaxFunctions, KU32 cbMaxModSegs,
+                                       KU32 cMaxThreads, KU32 cMaxStacks, KU32 cMaxStackFrames)
+{
+    /*
+     * Normalize the input.
+     */
+    if (!pvData)
+        return NULL;
+    KPRF_SETMIN_ALIGN(cMaxFunctions, 16, 16);
+    KPRF_SETMIN_ALIGN(cbMaxModSegs, KPRF_SIZEOF(MODSEG), 32);
+    KPRF_SETMIN_ALIGN(cMaxThreads, 1, 1);
+    KPRF_SETMIN_ALIGN(cMaxStacks, 1, 1);
+    KPRF_SETMIN_ALIGN(cMaxStackFrames, 32, 32);
+
+    /*
+     * The header.
+     */
+    KU32 off = 0;
+    KU32 cb = KPRF_OFFSETOF(HDR, aiFunctions[cMaxFunctions]);
+    cb = KPRF_ALIGN(cb, 32);
+    if (cbData < off + cb || off > off + cb)
+        return NULL;
+    KPRF_TYPE(P,HDR) pHdr = (KPRF_TYPE(P,HDR))pvData;
+
+    /* the core header */
+    pHdr->u32Magic          = 0;        /* Set at the very end */
+    pHdr->cFormatBits       = KPRF_BITS;
+    pHdr->uBasePtr          = 0;        /* Can be set afterwards using SetBasePtr. */
+#if KPRF_BITS <= 16
+    pHdr->u16Reserved       = 0;
+#endif
+#if KPRF_BITS <= 32
+    pHdr->u32Reserved       = 0;
+#endif
+    pHdr->cb                = cbData;
+    pHdr->cbAllocated       = cbData;
+
+    /* functions */
+    off += cb;
+    cb = cMaxFunctions * KPRF_SIZEOF(FUNC);
+    cb = KPRF_ALIGN(cb, 32);
+    if (cbData < off + cb || off > off + cb)
+        return NULL;
+    pHdr->cMaxFunctions     = cMaxFunctions;
+    pHdr->cFunctions        = 0;
+    pHdr->offFunctions      = off;
+    pHdr->cbFunction        = KPRF_SIZEOF(FUNC);
+
+    /* modsegs */
+    off += cb;
+    cb = KPRF_ALIGN(cbMaxModSegs, 32);
+    if (cbData < off + cb || off > off + cb)
+        return NULL;
+    pHdr->cbMaxModSegs      = cbMaxModSegs;
+    pHdr->cbModSegs         = 0;
+    pHdr->offModSegs        = off;
+
+    /* threads */
+    off += cb;
+    cb = cMaxThreads * KPRF_SIZEOF(THREAD);
+    cb = KPRF_ALIGN(cb, 32);
+    if (cbData < off + cb || off > off + cb)
+        return NULL;
+    pHdr->cMaxThreads       = cMaxThreads;
+    pHdr->cThreads          = 0;
+    pHdr->offThreads        = off;
+    pHdr->cbThread          = KPRF_SIZEOF(THREAD);
+
+    /* stacks */
+    off += cb;
+    cb = cMaxStacks * KPRF_OFFSETOF(STACK, aFrames[cMaxStackFrames]);
+    cb = KPRF_ALIGN(cb, 32);
+    if (cbData < off + cb || off > off + cb)
+        return NULL;
+    pHdr->cMaxStacks        = cMaxStacks;
+    pHdr->cStacks           = 0;
+    pHdr->offStacks         = off;
+    pHdr->cbStack           = KPRF_OFFSETOF(STACK, aFrames[cMaxStackFrames]);
+    pHdr->cMaxStackFrames   = cMaxStackFrames;
+
+    /* commandline */
+    pHdr->offCommandLine    = 0;
+    pHdr->cchCommandLine    = 0;
+
+    /* the final size */
+    pHdr->cb                = off + cb;
+
+
+    /*
+     * Done.
+     */
+    pHdr->u32Magic = KPRF_TYPE(,HDR_MAGIC);
+    return pHdr;
+}
+
diff --git a/src/lib/kStuff/kProfiler2/prfcoremodseg.cpp.h b/src/lib/kStuff/kProfiler2/prfcoremodseg.cpp.h
new file mode 100644
index 0000000..32c6e24
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/prfcoremodseg.cpp.h
@@ -0,0 +1,197 @@
+/* $Id: prfcoremodseg.cpp.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kProfiler Mark 2 - Core Module Segment Code Template.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * Adds a module segment.
+ *
+ * @returns Offset to the module if existing or successfully added
+ * @returns 0 if not found.
+ *
+ * @param   pHdr        The profiler header.
+ * @param   pModSeg     Pointer to the module segment to insert (it's copied of course).
+ * @param   off         The offset into the modseg area which has been searched.
+ *                      (This is relative to the first moddule segment record (at pHdr->offModSegs).)
+ */
+static KU32 KPRF_NAME(InsertModSeg)(KPRF_TYPE(P,HDR) pHdr, KPRF_TYPE(PC,MODSEG) pModSeg, KU32 off)
+{
+    /*
+     * Lookup the module segment, inserting it if not found (and there is room).
+     */
+    for (;;)
+    {
+        if (off >= pHdr->cbModSegs)
+        {
+            /*
+             * It was the end, let's try insert it.
+             *
+             * This is where we lock the modseg stuff. The deal is that we
+             * serialize the actual inserting without blocking lookups. This
+             * means that we may end up with potential racing inserts, but
+             * unless there is a large amount of modules being profiled that's
+             * probably not going to be much of a problem. Anyway if we race,
+             * we'll simply have to search the new additions before we add our
+             * own stuff.
+             */
+            KPRF_MODSEGS_LOCK();
+            if (off >= pHdr->cbModSegs)
+            {
+                KU32 cbModSeg = KPRF_OFFSETOF(MODSEG, szPath[pModSeg->cchPath + 1]);
+                cbModSeg = KPRF_ALIGN(cbModSeg, KPRF_SIZEOF(UPTR));
+                if (off + cbModSeg <= pHdr->cbMaxModSegs)
+                {
+                    KPRF_TYPE(P,MODSEG) pNew = KPRF_OFF2PTR(P,MODSEG, off + pHdr->offModSegs, pHdr);
+                    pNew->uBasePtr          = pModSeg->uBasePtr;
+                    pNew->cbSegmentMinusOne = pModSeg->cbSegmentMinusOne;
+                    pNew->iSegment          = pModSeg->iSegment;
+                    pNew->fLoaded           = pModSeg->fLoaded;
+                    pNew->cchPath           = pModSeg->cchPath;
+
+                    KI32 iPath = pModSeg->cchPath;
+                    do  pNew->szPath[iPath] = pModSeg->szPath[iPath];
+                    while (--iPath >= 0);
+
+                    /* commit it */
+                    KPRF_ATOMIC_SET32(&pHdr->cbModSegs, off + cbModSeg);
+                    off += pHdr->offModSegs;
+                }
+                else
+                    off = 0;
+                KPRF_MODSEGS_UNLOCK();
+                return off;
+            }
+            KPRF_MODSEGS_UNLOCK();
+            /* someone raced us, check the new entries. */
+        }
+
+        /*
+         * Match?
+         */
+        KPRF_TYPE(PC,MODSEG) pCur = KPRF_OFF2PTR(P,MODSEG, off + pHdr->offModSegs, pHdr);
+        if (    pCur->uBasePtr          == pModSeg->uBasePtr
+            &&  pCur->fLoaded           == pModSeg->fLoaded
+            &&  pCur->cchPath           == pModSeg->cchPath
+            &&  pCur->iSegment          == pModSeg->iSegment
+            &&  pCur->cbSegmentMinusOne == pModSeg->cbSegmentMinusOne
+           )
+        {
+            KI32 iPath = pModSeg->cchPath;
+            for (;;)
+            {
+                if (!iPath--)
+                    return off + pHdr->offModSegs;
+                if (pModSeg->szPath[iPath] != pCur->szPath[iPath])
+                    break;
+            }
+            /* didn't match, continue searching */
+        }
+        KU32 cbCur = KPRF_OFFSETOF(MODSEG, szPath[pCur->cchPath + 1]);
+        off += KPRF_ALIGN(cbCur, KPRF_SIZEOF(UPTR));
+    }
+}
+
+
+/**
+ * Queries data for and inserts a new module segment.
+ *
+ *
+ * @returns Offset to the module if existing or successfully added
+ * @returns 0 if not found.
+ *
+ * @param   pHdr        The profiler header.
+ * @param   uPC         Address within the module.
+ * @param   off         The offset into the modseg area which has been searched.
+ *                      (This is relative to the first moddule segment record (at pHdr->offModSegs).)
+ */
+static KU32 KPRF_NAME(NewModSeg)(KPRF_TYPE(P,HDR) pHdr, KPRF_TYPE(,UPTR) uPC, KU32 off)
+{
+    /*
+     * Query the module name and object of the function.
+     */
+#pragma pack(1)
+    struct
+    {
+        KPRF_TYPE(,MODSEG) ModSeg;
+        char               szMorePath[260];
+    } s;
+#pragma pack()
+    if (KPRF_GET_MODSEG(uPC + pHdr->uBasePtr, s.ModSeg.szPath, sizeof(s.ModSeg.szPath) + sizeof(s.szMorePath),
+                        &s.ModSeg.iSegment, &s.ModSeg.uBasePtr, &s.ModSeg.cbSegmentMinusOne))
+        return 0;
+    s.ModSeg.uBasePtr -= pHdr->uBasePtr;
+    s.ModSeg.fLoaded = 1;
+    s.ModSeg.cchPath = 0;
+    while (s.ModSeg.szPath[s.ModSeg.cchPath])
+        s.ModSeg.cchPath++;
+
+    return KPRF_NAME(InsertModSeg)(pHdr, &s.ModSeg, off);
+}
+
+
+/**
+ * Record a module segment.
+ *
+ * This is an internal worker for recording a module segment when adding
+ * a new function.
+ *
+ * @returns Offset to the module if existing or successfully added
+ * @returns 0 if not found.
+ *
+ * @param   pHdr        The profiler header.
+ * @param   uPC         Address within the module.
+ */
+static KU32 KPRF_NAME(RecordModSeg)(KPRF_TYPE(P,HDR) pHdr, KPRF_TYPE(,UPTR) uPC)
+{
+    /*
+     * Lookup the module segment, inserting it if not found (and there is room).
+     */
+    KU32 off = 0;
+    KPRF_TYPE(PC,MODSEG) pCur = KPRF_OFF2PTR(P,MODSEG, pHdr->offModSegs, pHdr);
+    const KU32 cbModSegs = pHdr->cbModSegs;
+    for (;;)
+    {
+        /* done and not found? */
+        if (off >= cbModSegs)
+            return KPRF_NAME(NewModSeg)(pHdr, uPC, off);
+
+        /*
+         * Match?
+         */
+        if (    pCur->fLoaded
+            &&  uPC - pCur->uBasePtr <= pCur->cbSegmentMinusOne)
+            return off + pHdr->offModSegs;
+
+        KU32 cbCur = KPRF_OFFSETOF(MODSEG, szPath[pCur->cchPath + 1]);
+        cbCur = KPRF_ALIGN(cbCur, KPRF_SIZEOF(UPTR));
+        off += cbCur;
+        pCur = (KPRF_TYPE(PC,MODSEG))((KU8 *)pCur + cbCur);
+    }
+}
+
diff --git a/src/lib/kStuff/kProfiler2/prfcorepost.cpp.h b/src/lib/kStuff/kProfiler2/prfcorepost.cpp.h
new file mode 100644
index 0000000..84ea2b0
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/prfcorepost.cpp.h
@@ -0,0 +1,41 @@
+/* $Id: prfcorepost.cpp.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kProfiler Mark 2 - Core Post-Code Template.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/*
+ * Clean up all our defines.
+ */
+#undef KPRF_OFFSETOF
+#undef KPRF_ALIGN
+#undef KPRF_SETMIN_ALIGN
+#undef KPRF_PTR2OFF
+#undef KPRF_OFF2PTREx
+#undef KPRF_OFF2PTR
+
diff --git a/src/lib/kStuff/kProfiler2/prfcorepre.cpp.h b/src/lib/kStuff/kProfiler2/prfcorepre.cpp.h
new file mode 100644
index 0000000..50f6b6a
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/prfcorepre.cpp.h
@@ -0,0 +1,202 @@
+/* $Id: prfcorepre.cpp.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kProfiler Mark 2 - Core Pre-Code Template.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/** @def KPRF_OFF2PTR
+ * Internal helper for converting a offset to a pointer.
+ * @internal
+ */
+#define KPRF_OFF2PTR(TypePrefix, TypeName, off, pHdr) \
+    ( (KPRF_TYPE(TypePrefix, TypeName)) ((off) + (KPRF_TYPE(,UPTR))pHdr) )
+
+/** @def KPRF_PTR2OFF
+ * Internal helper for converting a pointer to a offset.
+ * @internal
+ */
+#define KPRF_PTR2OFF(ptr, pHdr) \
+    ( (KPRF_TYPE(,UPTR))(ptr) - (KPRF_TYPE(,UPTR))(pHdr) )
+
+/** @def KPRF_ALIGN
+ * The usual align macro.
+ * @internal
+ */
+#define KPRF_ALIGN(n, align) ( ((n) + ( (align) - 1)) & ~((align) - 1) )
+
+/** @def KPRF_SETMIN_ALIGN
+ * Ensures a minimum and aligned value.
+ * @internal
+ */
+#define KPRF_SETMIN_ALIGN(n, min, align) \
+    do { \
+        if ((n) < (min)) \
+            (n) = (min); \
+        else { \
+            const KU32 u32 = ((n) + ( (align) - 1)) & ~((align) - 1); \
+            if (u32 >= (n)) \
+                (n) = u32; \
+        } \
+    } while (0)
+
+/** @def KPRF_OFFSETOF
+ * My usual extended OFFSETOF macro, except this returns KU32 and mangles the type name.
+ * @internal
+ */
+#define KPRF_OFFSETOF(kPrfType, Member) ( (KU32)(KUPTR)&((KPRF_TYPE(P,kPrfType))0)->Member )
+
+/** @def PRF_SIZEOF
+ * Size of a kPrf type.
+ * @internal
+ */
+#define KPRF_SIZEOF(kPrfType)       sizeof(KPRF_TYPE(,kPrfType))
+
+
+/** @def KPRF_NOW
+ * Gets the current timestamp.
+ */
+#ifndef KPRF_NOW
+# error "KPRF_NOW isn't defined!"
+#endif
+
+/** @def KRPF_IS_ACTIVE
+ * Checks if profiling is activated or not.
+ * The idea is to use some global variable for disabling and enabling
+ * profiling in order to deal with init/term issues.
+ */
+#ifndef KPRF_IS_ACTIVE
+# define KPRF_IS_ACTIVE()           1
+#endif
+
+/** @def KPRF_GET_HDR
+ * Gets the pointer to the profiler data header.
+ */
+#ifndef KPRF_GET_HDR
+# error "KPRF_GET_HDR isn't defined!"
+#endif
+
+/** @def KPRF_GET_THREADID
+ * Gets native thread id. This must be unique.
+ */
+#ifndef KPRF_GET_THREADID
+# error "KPRF_GET_THREADID isn't defined!"
+#endif
+
+/** @def KPRF_SET_THREAD
+ * Sets the pointer to the current thread so we can get to it
+ * without doing a linear search by thread id.
+ */
+#ifndef KPRF_SET_THREAD
+# error "KPRF_SET_THREAD isn't defined!"
+#endif
+
+/** @def KPRF_GET_THREAD
+ * Gets the pointer to the current thread as set by KPRF_SET_THREAD.
+ */
+#ifndef KPRF_GET_THREAD
+# error "KPRF_GET_THREAD isn't defined!"
+#endif
+
+/** @def KPRF_MODSEGS_LOCK
+ * Lock the module segment for updating.
+ */
+#ifndef KPRF_MODSEGS_LOCK
+# define KPRF_MODSEGS_LOCK()            do { } while (0)
+#endif
+
+/** @def KPRF_MODSEGS_UNLOCK
+ * Unlock the module segments.
+ */
+#ifndef KPRF_MODSEGS_UNLOCK
+# define KPRF_MODSEGS_UNLOCK()          do { } while (0)
+#endif
+
+/** @def KPRF_THREADS_LOCK
+ * Lock the threads for updating.
+ */
+#ifndef KPRF_THREADS_LOCK
+# define KPRF_THREADS_LOCK()            do { } while (0)
+#endif
+
+/** @def KPRF_THREADS_UNLOCK
+ * Unlock the threads.
+ */
+#ifndef KPRF_THREADS_UNLOCK
+# define KPRF_THREADS_UNLOCK()          do { } while (0)
+#endif
+
+/** @def KPRF_FUNCS_READ_LOCK
+ * Lock the functions for reading.
+ */
+#ifndef KPRF_FUNCS_READ_LOCK
+# define KPRF_FUNCS_READ_LOCK()         do { } while (0)
+#endif
+
+/** @def KPRF_FUNCS_READ_UNLOCK
+ * Releases a read lock on the functions.
+ */
+#ifndef KPRF_FUNCS_READ_UNLOCK
+# define KPRF_FUNCS_READ_UNLOCK()       do { } while (0)
+#endif
+
+/** @def KPRF_FUNCS_WRITE_LOCK
+ * Lock the functions for updating.
+ */
+#ifndef KPRF_FUNCS_WRITE_LOCK
+# define KPRF_FUNCS_WRITE_LOCK()        do { } while (0)
+#endif
+
+/** @def KPRF_FUNCS_WRITE_UNLOCK
+ * Releases a write lock on the functions.
+ */
+#ifndef KPRF_FUNCS_WRITE_UNLOCK
+# define KPRF_FUNCS_WRITE_UNLOCK()      do { } while (0)
+#endif
+
+
+/** @def KPRF_ATOMIC_SET32
+ * Atomically set a 32-bit value.
+ */
+#ifndef KPRF_ATOMIC_SET32
+# define KPRF_ATOMIC_SET32(pu32, u32)   do { *(pu32) = (u32); } while (0)
+#endif
+
+/** @def KPRF_ATOMIC_SET64
+ * Atomically (well, in a safe way) adds to a 64-bit value.
+ */
+#ifndef KPRF_ATOMIC_ADD64
+# define KPRF_ATOMIC_ADD64(pu64, u64)   do { *(pu64) += (u64); } while (0)
+#endif
+
+/** @def KPRF_ATOMIC_SET64
+ * Atomically (well, in a safe way) increments a 64-bit value.
+ */
+#ifndef KPRF_ATOMIC_INC64
+# define KPRF_ATOMIC_INC64(pu64)        KPRF_ATOMIC_ADD64(pu64, 1)
+#endif
+
diff --git a/src/lib/kStuff/kProfiler2/prfcorereloc.cpp.h b/src/lib/kStuff/kProfiler2/prfcorereloc.cpp.h
new file mode 100644
index 0000000..c7fc667
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/prfcorereloc.cpp.h
@@ -0,0 +1,47 @@
+/* $Id: prfcorereloc.cpp.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kProfiler Mark 2 - Core SetBasePtr Code Template.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * Set (or modify) the base pointer for the profiler.
+ *
+ * The purpose of the base pointer is to allow profiling of relocatable code. Set the
+ * base pointer right after initializing the data set, and update it when relocating
+ * the code (both by calling this function), and Bob's your uncle! :-)
+ *
+ * @param   pHdr        The header returned from the initializer.
+ * @param   uBasePtr    The new base pointer value.
+ */
+KPRF_DECL_FUNC(void, SetBasePtr)(KPRF_TYPE(P,HDR) pHdr, KPRF_TYPE(,UPTR) uBasePtr)
+{
+    pHdr->uBasePtr = uBasePtr;
+}
+
+
diff --git a/src/lib/kStuff/kProfiler2/prfcoreterm.cpp.h b/src/lib/kStuff/kProfiler2/prfcoreterm.cpp.h
new file mode 100644
index 0000000..561fcdf
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/prfcoreterm.cpp.h
@@ -0,0 +1,142 @@
+/* $Id: prfcoreterm.cpp.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kProfiler Mark 2 - Core Termination Code Template.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * Unwinds and terminates all the threads, and frees the stack space.
+ *
+ * @returns The new data set size. (pHdr->cb)
+ * @param   pHdr        The profiler data set header.
+ */
+KPRF_DECL_FUNC(KU32, TerminateAll)(KPRF_TYPE(P,HDR) pHdr)
+{
+    KU64 TS = KPRF_NOW();
+    if (!pHdr)
+        return 0;
+
+    /*
+     * Iterate the threads and terminate all which are non-terminated.
+     */
+    KPRF_TYPE(P,THREAD) paThread = KPRF_OFF2PTR(P,THREAD, pHdr->offThreads, pHdr);
+    for (KU32 i = 0; i < pHdr->cThreads; i++)
+    {
+        KPRF_TYPE(P,THREAD) pCur = &paThread[i];
+        switch (pCur->enmState)
+        {
+            /* these states needs no work. */
+            case KPRF_TYPE(,THREADSTATE_TERMINATED):
+            case KPRF_TYPE(,THREADSTATE_UNUSED):
+            default:
+                break;
+
+            /* these are active and requires unwinding.*/
+            case KPRF_TYPE(,THREADSTATE_ACTIVE):
+            case KPRF_TYPE(,THREADSTATE_SUSPENDED):
+            case KPRF_TYPE(,THREADSTATE_OVERFLOWED):
+                KPRF_NAME(TerminateThread)(pHdr, pCur, TS);
+                break;
+        }
+    }
+
+
+    /*
+     * Free the stacks.
+     */
+    if (pHdr->offStacks)
+    {
+        /* only if the stack is at the end of the data set. */
+        const KU32 cbStacks = KPRF_ALIGN(pHdr->cMaxStacks * pHdr->cbStack, 32);
+        if (pHdr->offStacks + cbStacks == pHdr->cb)
+            pHdr->cb -= cbStacks;
+        pHdr->offStacks = 0;
+    }
+
+    return pHdr->cb;
+}
+
+
+/**
+ * Sets the commandline.
+ *
+ * This is typically done after TerminateAll, when the stacks has
+ * been freed up and there is plenty free space.
+ *
+ * @returns The new data set size. (pHdr->cb)
+ * @param   pHdr        The profiler data set header.
+ * @param   cArgs       The number of arguments in the array.
+ * @param   papszArgs   Pointer to an array of arguments.
+ */
+KPRF_DECL_FUNC(KU32, SetCommandLine)(KPRF_TYPE(P,HDR) pHdr, unsigned cArgs, const char * const *papszArgs)
+{
+    if (!pHdr)
+        return 0;
+
+    /*
+     * Any space at all?
+     */
+    if (pHdr->cb + 16 > pHdr->cbAllocated) /* 16 bytes min */
+        return pHdr->cb;
+
+    /*
+     * Encode untill we run out of space.
+     */
+    pHdr->offCommandLine = pHdr->cb;
+    char *psz = (char *)pHdr + pHdr->cb;
+    char *pszMax = (char *)pHdr + pHdr->cbAllocated - 1;
+    for (unsigned i = 0; i < cArgs && psz + 7 < pszMax; i++)
+    {
+        if (i > 0)
+            *psz++ = ' ';
+        *psz++ = '\'';
+        const char *pszArg = papszArgs[i];
+        while (psz < pszMax)
+        {
+            char ch = *pszArg++;
+            if (!ch)
+                break;
+            if (ch == '\'')
+            {
+                if (psz + 1 >= pszMax)
+                    break;
+                *psz++ = '\\';
+            }
+            *psz++ = ch;
+        }
+        if (psz < pszMax)
+            *psz++ = '\'';
+    }
+    *psz++ = '\0';
+    pHdr->cb = psz - (char *)pHdr;
+    pHdr->cchCommandLine = pHdr->cb - pHdr->offCommandLine - 1;
+
+    return pHdr->cb;
+}
+
+
diff --git a/src/lib/kStuff/kProfiler2/prfreader.cpp.h b/src/lib/kStuff/kProfiler2/prfreader.cpp.h
new file mode 100644
index 0000000..412e289
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/prfreader.cpp.h
@@ -0,0 +1,1602 @@
+/* $Id: prfreader.cpp.h 77 2016-06-22 17:03:55Z bird $ */
+/** @file
+ * kProfiler Mark 2 - Reader Code Template.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * Validates the non-header parts of a data-set.
+ *
+ * @returns true if valid.
+ * @returns false if invalid. (written description to pOut)
+ *
+ * @param   pHdr        Pointer to the data set.
+ * @param   cb          The size of the data set.
+ * @param   pOut        Where to write error messages.
+ */
+static bool KPRF_NAME(IsValid)(KPRF_TYPE(PC,HDR) pHdr, KU32 cb, FILE *pOut)
+{
+    KPRF_TYPE(,UPTR) uMaxPtr = ~(KPRF_TYPE(,UPTR))0 - pHdr->uBasePtr;
+
+    /*
+     * Iterate the module segments.
+     */
+    KU32 off = pHdr->offModSegs;
+    while (off < pHdr->offModSegs + pHdr->cbModSegs)
+    {
+        KPRF_TYPE(PC,MODSEG) pCur = KPRF_OFF2PTR(PC,MODSEG, off, pHdr);
+        KU32 cbCur = KPRF_OFFSETOF(MODSEG, szPath[pCur->cchPath + 1]);
+        cbCur = KPRF_ALIGN(cbCur, KPRF_SIZEOF(UPTR));
+        if (cbCur + off > pHdr->offModSegs + pHdr->cbModSegs)
+        {
+            fprintf(pOut, "The module segment record at 0x%x is too long!\n", off);
+            return false;
+        }
+        if (pCur->uBasePtr > uMaxPtr)
+            fprintf(pOut, "warning: The module segment record at 0x%x has a too high base address.\n", off);
+
+        if (strlen(pCur->szPath) != pCur->cchPath)
+        {
+            fprintf(pOut, "The module segment record at 0x%x has an invalid path length 0x%x it the actual length is 0x%x\n",
+                    off, pCur->cchPath, strlen(pCur->szPath));
+            return false;
+        }
+
+        /* next */
+        off += cbCur;
+    }
+
+
+    /*
+     * Iterate the functions.
+     */
+    KPRF_TYPE(PC,FUNC) paFuncs = KPRF_OFF2PTR(PC,FUNC, pHdr->offFunctions, pHdr);
+    for (KU32 i = 0; i < pHdr->cFunctions; i++)
+    {
+        KPRF_TYPE(PC,FUNC) pCur = &paFuncs[i];
+        if (pCur->uEntryPtr > uMaxPtr)
+            fprintf(pOut, "warning: Function 0x%x has a too high base address.\n", i);
+        if (pCur->offModSeg)
+        {
+            if (    pCur->offModSeg < pHdr->offModSegs
+                ||  pCur->offModSeg >= pHdr->offModSegs + pHdr->cbModSegs
+                ||  pCur->offModSeg != KPRF_ALIGN(pCur->offModSeg, sizeof(pCur->uEntryPtr))
+               )
+            {
+                fprintf(pOut, "Function 0x%x has an invalid offModSeg value (0x%x).\n", i, pCur->offModSeg);
+                return false;
+            }
+            /** @todo more validation here.. */
+        }
+    }
+
+
+    /*
+     * Validate the threads.
+     */
+    KPRF_TYPE(PC,THREAD) paThreads = KPRF_OFF2PTR(PC,THREAD, pHdr->offThreads, pHdr);
+    for (KU32 i = 0; i < pHdr->cThreads; i++)
+    {
+        KPRF_TYPE(PC,THREAD) pCur = &paThreads[i];
+        if (pCur->uStackBasePtr > uMaxPtr)
+            fprintf(pOut, "warning: Thread 0x%x has a too high base address.\n", i);
+        switch (pCur->enmState)
+        {
+            case KPRF_TYPE(,THREADSTATE_ACTIVE):
+            case KPRF_TYPE(,THREADSTATE_SUSPENDED):
+            case KPRF_TYPE(,THREADSTATE_OVERFLOWED):
+            case KPRF_TYPE(,THREADSTATE_TERMINATED):
+                break;
+            default:
+                fprintf(pOut, "Thread 0x%x has an invalid state value (0x%x).\n", i, pCur->enmState);
+                return false;
+        }
+    }
+
+
+    return true;
+}
+
+
+/**
+ * Dumps a file of a particular format.
+ *
+ * @returns 0 on success. (you might want to check the pOut state)
+ * @returns -1 on failure.
+ *
+ * @param   pHdr        Pointer to the data set.
+ * @param   pOut        The output file. This is opened for text writing.
+ * @param   pReader     The reader object.
+ */
+static int KPRF_NAME(Dump)(KPRF_TYPE(PC,HDR) pHdr, FILE *pOut)
+{
+    /*
+     * Any commandline?
+     */
+    if (pHdr->offCommandLine)
+        fprintf(pOut,
+                "Commandline: %s (%d  bytes)\n",
+                (char *)KPRF_OFF2PTR(PC,MODSEG, pHdr->offCommandLine, pHdr), /* stupid, stupid, type hacking. */
+                pHdr->cchCommandLine);
+
+    /*
+     * Dump the module segments.
+     */
+    fprintf(pOut,
+            "Module Segments: off=0x%x 0x%x/0x%x (bytes)\n"
+            "----------------\n",
+            pHdr->offModSegs, pHdr->cbModSegs, pHdr->cbMaxModSegs);
+    KU32 off = pHdr->offModSegs;
+    while (off < pHdr->offModSegs + pHdr->cbModSegs)
+    {
+        KPRF_TYPE(PC,MODSEG) pCur = KPRF_OFF2PTR(PC,MODSEG, off, pHdr);
+        KU32 cbCur = KPRF_OFFSETOF(MODSEG, szPath[pCur->cchPath + 1]);
+        cbCur = KPRF_ALIGN(cbCur, KPRF_SIZEOF(UPTR));
+
+        fprintf(pOut,
+                "0x%04x: iSegment=0x%08x uBasePtr=%" KPRF_FMT_UPTR " szPath='%s' (%d bytes)\n",
+                off, pCur->iSegment, pCur->uBasePtr, pCur->szPath, pCur->cchPath);
+
+        /* next */
+        off += cbCur;
+    }
+    fprintf(pOut, "\n");
+
+    /*
+     * Dump the functions.
+     */
+    fprintf(pOut,
+            "Functions: off=0x%x 0x%x/0x%x\n"
+            "----------\n",
+            pHdr->offFunctions, pHdr->cFunctions, pHdr->cMaxFunctions);
+    KPRF_TYPE(PC,FUNC) paFuncs = KPRF_OFF2PTR(PC,FUNC, pHdr->offFunctions, pHdr);
+    for (KU32 i = 0; i < pHdr->cFunctions; i++)
+    {
+        KPRF_TYPE(PC,FUNC) pCur = &paFuncs[i];
+        fprintf(pOut, "0x%04x: uEntryPtr=%" KPRF_FMT_UPTR " cOnStack=0x%" KPRF_FMT_X64 " cCalls=0x%" KPRF_FMT_X64 "\n"
+                      "       OnStack={0x%" KPRF_FMT_X64 ", 0x%" KPRF_FMT_X64 ", 0x%" KPRF_FMT_X64 "}\n"
+                      "  OnTopOfStack={0x%" KPRF_FMT_X64 ", 0x%" KPRF_FMT_X64 ", 0x%" KPRF_FMT_X64 "}\n",
+                i, pCur->uEntryPtr, pCur->cOnStack, pCur->cCalls,
+                pCur->OnStack.MinTicks, pCur->OnStack.MaxTicks,  pCur->OnStack.SumTicks,
+                pCur->OnTopOfStack.MinTicks, pCur->OnTopOfStack.MaxTicks,  pCur->OnTopOfStack.SumTicks);
+        if (pCur->offModSeg)
+        {
+            KPRF_TYPE(PC,MODSEG) pModSeg = KPRF_OFF2PTR(PC,MODSEG, pCur->offModSeg, pHdr);
+            fprintf(pOut, "  offModSeg=0x%08x iSegment=0x%02x uBasePtr=%" KPRF_FMT_UPTR " szPath='%s' (%d bytes)\n",
+                    pCur->offModSeg, pModSeg->iSegment, pModSeg->uBasePtr, pModSeg->szPath, pModSeg->cchPath);
+
+#if 1
+            PKDBGMOD pMod;
+            int rc = kDbgModuleOpen(&pMod, pModSeg->szPath, NULL /* pLdrMod */);
+            if (!rc)
+            {
+                KDBGSYMBOL Sym;
+                rc = kDbgModuleQuerySymbol(pMod, pModSeg->iSegment, pCur->uEntryPtr - pModSeg->uBasePtr, &Sym);
+                if (!rc)
+                {
+                    fprintf(pOut, "  %s\n", Sym.szName);
+                }
+                kDbgModuleClose(pMod);
+            }
+#endif
+
+        }
+    }
+    fprintf(pOut, "\n");
+
+    /*
+     * Dump the threads.
+     */
+    fprintf(pOut,
+            "Threads: off=0x%x 0x%x/0x%x (Stacks=0x%x/0x%x cMaxStackFrames=0x%x)\n"
+            "--------\n",
+            pHdr->offThreads, pHdr->cThreads, pHdr->cMaxThreads, pHdr->cStacks, pHdr->cMaxStacks, pHdr->cMaxStackFrames);
+    KPRF_TYPE(PC,THREAD) paThreads = KPRF_OFF2PTR(PC,THREAD, pHdr->offThreads, pHdr);
+    for (KU32 i = 0; i < pHdr->cThreads; i++)
+    {
+        KPRF_TYPE(PC,THREAD) pCur = &paThreads[i];
+        fprintf(pOut,
+                "0x%02x: ThreadId=0x%08" KPRF_FMT_X64 " enmState=%d szName='%s'\n"
+                "  uStackBasePtr=%" KPRF_FMT_UPTR " cbMaxStack=%" KPRF_FMT_UPTR "\n"
+                "  cCalls=0x%" KPRF_FMT_X64 " cOverflows=0x%" KPRF_FMT_X64 " cStackSwitchRejects=0x%" KPRF_FMT_X64 "\n"
+                "  cUnwinds=0x%" KPRF_FMT_X64 " ProfiledTicks=0x%" KPRF_FMT_X64 " OverheadTicks=0x%" KPRF_FMT_X64 "\n",
+                i, pCur->ThreadId, pCur->enmState, pCur->szName,
+                pCur->uStackBasePtr, pCur->cbMaxStack,
+                pCur->cCalls, pCur->cOverflows, pCur->cStackSwitchRejects,
+                pCur->cUnwinds, pCur->ProfiledTicks, pCur->OverheadTicks);
+    }
+
+    return 0;
+}
+
+
+/** Pointer to a report module.
+ * @internal */
+typedef struct KPRF_TYPE(,REPORTMOD) *KPRF_TYPE(P,REPORTMOD);
+/** Pointer to a report module segment.
+ * @internal */
+typedef struct KPRF_TYPE(,REPORTMODSEG) *KPRF_TYPE(P,REPORTMODSEG);
+
+
+/**
+ * A report module segment.
+ *
+ * @internal
+ */
+typedef struct KPRF_TYPE(,REPORTMODSEG)
+{
+    /** AVL node core. The key is the data set offset of the module segment record. */
+    KDBGADDR                    offSegment;
+    struct KPRF_TYPE(,REPORTMODSEG) *mpLeft;    /**< AVL left branch. */
+    struct KPRF_TYPE(,REPORTMODSEG) *mpRight;   /**< AVL rigth branch. */
+    /** Pointer to the next segment for the module. */
+    KPRF_TYPE(P,REPORTMODSEG)   pNext;
+    /** Pointer to the module segment data in the data set. */
+    KPRF_TYPE(PC,MODSEG)        pModSeg;
+    /** Pointer to the module this segment belongs to. */
+    KPRF_TYPE(P,REPORTMOD)      pMod;
+    /** The time this segment has spent on the stack.. */
+    KU64                        OnStackTicks;
+    /** The time this segment has spent on the top of the stack.. */
+    KU64                        OnTopOfStackTicks;
+    /** The number of profiled functions from this segment. */
+    KU32                        cFunctions;
+    KU8                         mHeight;        /**< AVL Subtree height. */
+} KPRF_TYPE(,REPORTMODSEG), *KPRF_TYPE(P,REPORTMODSEG);
+
+
+/**
+ * A report module segment.
+ *
+ * @internal
+ */
+typedef struct KPRF_TYPE(,REPORTMOD)
+{
+    /** The module number. */
+    KU32                        iMod;
+    /** Pointer to the next module in the list. */
+    KPRF_TYPE(P,REPORTMOD)      pNext;
+    /** Pointer to the list of segments belonging to this module. */
+    KPRF_TYPE(P,REPORTMODSEG)   pFirstSeg;
+    /** The debug module handle. */
+    PKDBGMOD                    pDbgMod;
+    /** The time this segment has spent on the stack.. */
+    KU64                        OnStackTicks;
+    /** The time this segment has spent on the top of the stack.. */
+    KU64                        OnTopOfStackTicks;
+    /** The number of profiled functions from this segment. */
+    KU32                        cFunctions;
+} KPRF_TYPE(,REPORTMOD), *KPRF_TYPE(P,REPORTMOD);
+
+
+/**
+ * A report function.
+ *
+ * @internal
+ */
+typedef struct KPRF_TYPE(,REPORTFUNC)
+{
+    /** Pointer to the function data in the data set. */
+    KPRF_TYPE(PC,FUNC)          pFunc;
+    /** Pointer to the module segment this function belongs to. (can be NULL) */
+    KPRF_TYPE(P,REPORTMODSEG)   pModSeg;
+    /** Pointer to the function symbol. */
+    PKDBGSYMBOL                 pSym;
+    /** Pointer to the function line number. */
+    PKDBGLINE                   pLine;
+} KPRF_TYPE(,REPORTFUNC), *KPRF_TYPE(P,REPORTFUNC);
+
+
+/**
+ * Compares two REPROTFUNC records to determin which has the higher on-stack time.
+ */
+static int KPRF_NAME(FuncCompareOnStack)(const void *pv1, const void *pv2)
+{
+    KPRF_TYPE(PC,FUNC) p1 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv1)->pFunc;
+    KPRF_TYPE(PC,FUNC) p2 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv2)->pFunc;
+    if (p1->OnStack.SumTicks > p2->OnStack.SumTicks)
+        return -1;
+    if (p1->OnStack.SumTicks < p2->OnStack.SumTicks)
+        return 1;
+    if (p1->OnStack.MaxTicks > p2->OnStack.MaxTicks)
+        return -1;
+    if (p1->OnStack.MaxTicks < p2->OnStack.MaxTicks)
+        return 1;
+    if (p1->OnStack.MinTicks > p2->OnStack.MinTicks)
+        return -1;
+    if (p1->OnStack.MinTicks < p2->OnStack.MinTicks)
+        return 1;
+    if (p1 < p2)
+        return -1;
+    return 1;
+}
+
+
+/**
+ * Compares two REPROTFUNC records to determin which has the higher on-stack average time.
+ */
+static int KPRF_NAME(FuncCompareOnStackAvg)(const void *pv1, const void *pv2)
+{
+    KPRF_TYPE(PC,FUNC) p1 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv1)->pFunc;
+    KPRF_TYPE(PC,FUNC) p2 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv2)->pFunc;
+    if (p1->OnStack.SumTicks / p1->cOnStack > p2->OnStack.SumTicks / p2->cOnStack)
+        return -1;
+    if (p1->OnStack.SumTicks / p1->cOnStack < p2->OnStack.SumTicks / p2->cOnStack)
+        return 1;
+    return KPRF_NAME(FuncCompareOnStack)(pv1, pv2);
+}
+
+
+/**
+ * Compares two REPROTFUNC records to determin which has the higher on-stack min time.
+ */
+static int KPRF_NAME(FuncCompareOnStackMin)(const void *pv1, const void *pv2)
+{
+    KPRF_TYPE(PC,FUNC) p1 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv1)->pFunc;
+    KPRF_TYPE(PC,FUNC) p2 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv2)->pFunc;
+    if (p1->OnStack.MinTicks > p2->OnStack.MinTicks)
+        return -1;
+    if (p1->OnStack.MinTicks < p2->OnStack.MinTicks)
+        return 1;
+    return KPRF_NAME(FuncCompareOnStack)(pv1, pv2);
+}
+
+
+/**
+ * Compares two REPROTFUNC records to determin which has the higher on-stack max time.
+ */
+static int KPRF_NAME(FuncCompareOnStackMax)(const void *pv1, const void *pv2)
+{
+    KPRF_TYPE(PC,FUNC) p1 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv1)->pFunc;
+    KPRF_TYPE(PC,FUNC) p2 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv2)->pFunc;
+    if (p1->OnStack.MaxTicks > p2->OnStack.MaxTicks)
+        return -1;
+    if (p1->OnStack.MaxTicks < p2->OnStack.MaxTicks)
+        return 1;
+    return KPRF_NAME(FuncCompareOnStack)(pv1, pv2);
+}
+
+
+/**
+ * Compares two REPROTFUNC records to determin which has the higher on-stack time.
+ */
+static int KPRF_NAME(FuncCompareOnTopOfStack)(const void *pv1, const void *pv2)
+{
+    KPRF_TYPE(PC,FUNC) p1 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv1)->pFunc;
+    KPRF_TYPE(PC,FUNC) p2 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv2)->pFunc;
+    if (p1->OnTopOfStack.SumTicks > p2->OnTopOfStack.SumTicks)
+        return -1;
+    if (p1->OnTopOfStack.SumTicks < p2->OnTopOfStack.SumTicks)
+        return 1;
+    if (p1->OnTopOfStack.MaxTicks > p2->OnTopOfStack.MaxTicks)
+        return -1;
+    if (p1->OnTopOfStack.MaxTicks < p2->OnTopOfStack.MaxTicks)
+        return 1;
+    if (p1->OnTopOfStack.MinTicks > p2->OnTopOfStack.MinTicks)
+        return -1;
+    if (p1->OnTopOfStack.MinTicks < p2->OnTopOfStack.MinTicks)
+        return 1;
+    if (p1 < p2)
+        return -1;
+    return 1;
+}
+
+
+/**
+ * Compares two REPROTFUNC records to determin which has the higher on-stack average time.
+ */
+static int KPRF_NAME(FuncCompareOnTopOfStackAvg)(const void *pv1, const void *pv2)
+{
+    KPRF_TYPE(PC,FUNC) p1 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv1)->pFunc;
+    KPRF_TYPE(PC,FUNC) p2 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv2)->pFunc;
+    if (p1->OnTopOfStack.SumTicks / p1->cOnStack > p2->OnTopOfStack.SumTicks / p2->cOnStack)
+        return -1;
+    if (p1->OnTopOfStack.SumTicks / p1->cOnStack < p2->OnTopOfStack.SumTicks / p2->cOnStack)
+        return 1;
+    return KPRF_NAME(FuncCompareOnTopOfStack)(pv1, pv2);
+}
+
+
+/**
+ * Compares two REPROTFUNC records to determin which has the higher on-stack min time.
+ */
+static int KPRF_NAME(FuncCompareOnTopOfStackMin)(const void *pv1, const void *pv2)
+{
+    KPRF_TYPE(PC,FUNC) p1 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv1)->pFunc;
+    KPRF_TYPE(PC,FUNC) p2 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv2)->pFunc;
+    if (p1->OnTopOfStack.MinTicks > p2->OnTopOfStack.MinTicks)
+        return -1;
+    if (p1->OnTopOfStack.MinTicks < p2->OnTopOfStack.MinTicks)
+        return 1;
+    return KPRF_NAME(FuncCompareOnTopOfStack)(pv1, pv2);
+}
+
+
+/**
+ * Compares two REPROTFUNC records to determin which has the higher on-stack min time.
+ */
+static int KPRF_NAME(FuncCompareOnTopOfStackMax)(const void *pv1, const void *pv2)
+{
+    KPRF_TYPE(PC,FUNC) p1 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv1)->pFunc;
+    KPRF_TYPE(PC,FUNC) p2 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv2)->pFunc;
+    if (p1->OnTopOfStack.MaxTicks > p2->OnTopOfStack.MaxTicks)
+        return -1;
+    if (p1->OnTopOfStack.MaxTicks < p2->OnTopOfStack.MaxTicks)
+        return 1;
+    return KPRF_NAME(FuncCompareOnTopOfStack)(pv1, pv2);
+}
+
+
+/**
+ * Compares two REPROTFUNC records to determin which has the higher call to count.
+ */
+static int KPRF_NAME(FuncCompareCallsTo)(const void *pv1, const void *pv2)
+{
+    KPRF_TYPE(PC,FUNC) p1 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv1)->pFunc;
+    KPRF_TYPE(PC,FUNC) p2 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv2)->pFunc;
+    if (p1->cOnStack > p2->cOnStack)
+        return -1;
+    if (p1->cOnStack < p2->cOnStack)
+        return 1;
+    return KPRF_NAME(FuncCompareOnStack)(pv1, pv2);
+}
+
+
+/**
+ * Compares two REPROTFUNC records to determin which has the higher call from count.
+ */
+static int KPRF_NAME(FuncCompareCallsFrom)(const void *pv1, const void *pv2)
+{
+    KPRF_TYPE(PC,FUNC) p1 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv1)->pFunc;
+    KPRF_TYPE(PC,FUNC) p2 = (*(KPRF_TYPE(P,REPORTFUNC) *)pv2)->pFunc;
+    if (p1->cCalls > p2->cCalls)
+        return -1;
+    if (p1->cCalls < p2->cCalls)
+        return 1;
+    return KPRF_NAME(FuncCompareOnTopOfStack)(pv1, pv2);
+}
+
+
+/**
+ * A report thread.
+ *
+ * @internal
+ */
+typedef struct KPRF_TYPE(,REPORTTHREAD)
+{
+    /** Pointer to the thread data in the data set. */
+    KPRF_TYPE(PC,THREAD)        pThread;
+} KPRF_TYPE(,REPORTTHREAD), *KPRF_TYPE(P,REPORTTHREAD);
+
+
+/**
+ * Data-set analysis report.
+ *
+ * This is an internal structure to store temporary data between the
+ * analysis stage and the priting state.
+ *
+ * @internal
+ */
+typedef struct KPRF_TYPE(,REPORT)
+{
+    /** Pointer to the data set. */
+    KPRF_TYPE(PC,HDR)           pHdr;
+
+    /** @name Data-set item wrappers.
+     * @{ */
+    /** Pointer to the array of threads. */
+    KPRF_TYPE(P,REPORTTHREAD)   paThreads;
+    /** Pointer to the array of functions. */
+    KPRF_TYPE(P,REPORTFUNC)     paFunctions;
+    /** Pointer to the head of the module list. */
+    KPRF_TYPE(P,REPORTMOD)      pFirstMod;
+    /** The number of modules in the list. */
+    KU32                        cMods;
+    /** The module segment tree. (Only kAvl cares about this.) */
+    KPRF_TYPE(P,REPORTMODSEG)   pModSegTree;
+    /** The number of module segments in the tree. */
+    KU32                        cModSegs;
+    /** @} */
+
+    /** @name Sorting.
+     * @{ */
+    /** Pointer to the array of threads. */
+    KPRF_TYPE(P,REPORTTHREAD)  *papSortedThreads;
+    /** Pointer to the array of functions. */
+    KPRF_TYPE(P,REPORTFUNC)    *papSortedFunctions;
+    /** @} */
+
+    /** @name Accumulated Thread Data.
+     * @{ */
+    /** Sum of the profiled ticks. */
+    KU64                        ProfiledTicks;
+    /** Sum of the overhead ticks. */
+    KU64                        OverheadTicks;
+    /** Sum of the sleep ticks. */
+    KU64                        SleepTicks;
+    /** Sum of calls performed. */
+    KU64                        cCalls;
+    /** @} */
+
+} KPRF_TYPE(,REPORT), *KPRF_TYPE(P,REPORT), **KPRF_TYPE(PP,REPORT);
+
+
+/* Instantiate the AVL tree code. */
+#define KAVL_CHECK_FOR_EQUAL_INSERT
+#define KAVL_MAX_STACK          32
+#define KAVL_STD_KEY_COMP
+#define mKey                    offSegment
+#define KAVLKEY                 KDBGADDR
+#define KAVLNODE                KPRF_TYPE(,REPORTMODSEG)
+#define mpRoot                  pModSegTree
+#define KAVLROOT                KPRF_TYPE(,REPORT)
+#define KAVL_FN(name)           KPRF_NAME(ReportTree ## name)
+#define KAVL_TYPE(prefix,name)  KPRF_TYPE(prefix, REPORTMODESEG ## name)
+#define KAVL_INT(name)          KPRF_NAME(REPORTMODESEGINT ## name)
+#define KAVL_DECL(type)         K_DECL_INLINE(type)
+#include <k/kAvlTmpl/kAvlBase.h>
+#include <k/kAvlTmpl/kAvlDestroy.h>
+#include <k/kAvlTmpl/kAvlGet.h>
+#include <k/kAvlTmpl/kAvlUndef.h>
+
+
+/**
+ * Allocates and initializes a report.
+ *
+ * @returns Pointer to the report on success.
+ * @returns NULL on failure.
+ */
+static KPRF_TYPE(P,REPORT) KPRF_NAME(NewReport)(KPRF_TYPE(PC,HDR) pHdr)
+{
+    /*
+     * Allocate memory for the report.
+     * Everything but the mods and modsegs is allocated in the same block as the report.
+     */
+    KSIZE cb = KPRF_ALIGN(KPRF_SIZEOF(REPORT), 32);
+    KUPTR offThreads = cb;
+    cb += KPRF_ALIGN(KPRF_SIZEOF(REPORTTHREAD) * pHdr->cThreads, 32);
+    KUPTR offFunctions = cb;
+    cb += KPRF_ALIGN(KPRF_SIZEOF(REPORTFUNC) * pHdr->cFunctions, 32);
+    KUPTR offSortedThreads = cb;
+    cb += KPRF_ALIGN(sizeof(KPRF_TYPE(P,REPORTTHREAD)) * pHdr->cThreads, 32);
+    KUPTR offSortedFunctions = cb;
+    cb += KPRF_ALIGN(sizeof(KPRF_TYPE(P,REPORTFUNC)) * pHdr->cFunctions, 32);
+    KPRF_TYPE(P,REPORT) pReport = (KPRF_TYPE(P,REPORT))malloc(cb);
+    if (!pReport)
+        return NULL;
+
+    /*
+     * Initialize it.
+     */
+    pReport->pHdr = pHdr;
+    pReport->paThreads = (KPRF_TYPE(P,REPORTTHREAD))((KU8 *)pReport + offThreads);
+    pReport->paFunctions = (KPRF_TYPE(P,REPORTFUNC))((KU8 *)pReport + offFunctions);
+    pReport->pFirstMod = NULL;
+    pReport->cMods = 0;
+    KPRF_NAME(ReportTreeInit)(pReport);
+    pReport->cModSegs = 0;
+    pReport->papSortedThreads = (KPRF_TYPE(P,REPORTTHREAD) *)((KU8 *)pReport + offSortedThreads);
+    pReport->papSortedFunctions = (KPRF_TYPE(P,REPORTFUNC) *)((KU8 *)pReport + offSortedFunctions);
+    pReport->ProfiledTicks = 0;
+    pReport->OverheadTicks = 0;
+    pReport->SleepTicks = 0;
+    pReport->cCalls = 0;
+
+    return pReport;
+}
+
+
+/**
+ * AVL callback for deleting a module segment node.
+ *
+ * @returns 0
+ * @param   pCore       The tree node to delete.
+ * @param   pvParam     User parameter, ignored.
+ */
+static int KPRF_NAME(DeleteModSeg)(KPRF_TYPE(P,REPORTMODSEG) pCore, void *pvParam)
+{
+    free(pCore);
+    return 0;
+}
+
+
+/**
+ * Releases all the resources held be a report.
+ *
+ * @param   pReport     The report to delete.
+ */
+static void KPRF_NAME(DeleteReport)(KPRF_TYPE(P,REPORT) pReport)
+{
+    /*
+     * The list and AVL.
+     */
+    while (pReport->pFirstMod)
+    {
+        KPRF_TYPE(P,REPORTMOD) pFree = pReport->pFirstMod;
+        pReport->pFirstMod = pFree->pNext;
+        kDbgModuleClose(pFree->pDbgMod);
+        free(pFree);
+    }
+
+    KPRF_NAME(ReportTreeDestroy)(pReport, KPRF_NAME(DeleteModSeg), NULL);
+
+    /*
+     * The function debug info.
+     */
+    KU32 i = pReport->pHdr->cFunctions;
+    while (i-- > 0)
+    {
+        kDbgSymbolFree(pReport->paFunctions[i].pSym);
+        kDbgLineFree(pReport->paFunctions[i].pLine);
+    }
+
+    /*
+     * The report it self.
+     */
+    pReport->pHdr = NULL;
+    free(pReport);
+}
+
+
+/**
+ * Builds the module segment tree and the list of modules.
+ *
+ * @returns 0 on success.
+ * @returns -1 on failure.
+ * @param   pReport     The report to work on.
+ */
+static int KPRF_NAME(AnalyzeModSegs)(KPRF_TYPE(P,REPORT) pReport)
+{
+    const KU32 offEnd = pReport->pHdr->offModSegs + pReport->pHdr->cbModSegs;
+    KU32 off = pReport->pHdr->offModSegs;
+    while (off < offEnd)
+    {
+        KPRF_TYPE(PC,MODSEG) pCur = KPRF_OFF2PTR(PC,MODSEG, off, pReport->pHdr);
+        KU32 cbCur = KPRF_OFFSETOF(MODSEG, szPath[pCur->cchPath + 1]);
+        cbCur = KPRF_ALIGN(cbCur, KPRF_SIZEOF(UPTR));
+
+        /*
+         * Create a new modseg record.
+         */
+        KPRF_TYPE(P,REPORTMODSEG) pSeg = (KPRF_TYPE(P,REPORTMODSEG))malloc(sizeof(*pSeg));
+        if (!pSeg)
+            return -1;
+
+        pSeg->offSegment = off;
+        pSeg->pModSeg = pCur;
+        pSeg->pMod = NULL; /* below */
+        pSeg->OnStackTicks = 0;
+        pSeg->OnTopOfStackTicks = 0;
+        pSeg->cFunctions = 0;
+
+        if (!KPRF_NAME(ReportTreeInsert)(pReport, pSeg))
+        {
+            free(pSeg);
+            return -1;
+        }
+        pReport->cModSegs++;
+
+        /*
+         * Search for the module record.
+         */
+        KPRF_TYPE(P,REPORTMOD) pMod = pReport->pFirstMod;
+        while (     pMod
+               &&   (   pMod->pFirstSeg->pModSeg->cchPath != pCur->cchPath
+                     || memcmp(pMod->pFirstSeg->pModSeg->szPath, pCur->szPath, pCur->cchPath)))
+            pMod = pMod->pNext;
+        if (pMod)
+        {
+            /** @todo sort segments */
+            pSeg->pMod = pMod;
+            pSeg->pNext = pMod->pFirstSeg;
+            pMod->pFirstSeg = pSeg;
+        }
+        else
+        {
+            KPRF_TYPE(P,REPORTMOD) pMod = (KPRF_TYPE(P,REPORTMOD))malloc(sizeof(*pMod) + pCur->cchPath);
+            if (!pMod)
+                return -1;
+            pSeg->pMod = pMod;
+            pSeg->pNext = NULL;
+            pMod->iMod = pReport->cMods++;
+            pMod->pNext = pReport->pFirstMod;
+            pReport->pFirstMod = pMod;
+            pMod->pFirstSeg = pSeg;
+            pMod->pDbgMod = NULL;
+            pMod->OnStackTicks = 0;
+            pMod->OnTopOfStackTicks = 0;
+            pMod->cFunctions = 0;
+
+            int rc = kDbgModuleOpen(&pMod->pDbgMod, pSeg->pModSeg->szPath, NULL /* kLdrMod */);
+            if (rc)
+                pMod->pDbgMod = NULL;
+        }
+
+        /* next */
+        off += cbCur;
+    }
+
+    return 0;
+}
+
+
+/**
+ * Initializes the function arrays.
+ *
+ * @returns 0 on success.
+ * @returns -1 on failure.
+ * @param   pReport     The report to work on.
+ */
+static int KPRF_NAME(AnalyseFunctions)(KPRF_TYPE(P,REPORT) pReport)
+{
+    KU32 iFunc = pReport->pHdr->cFunctions;
+    KPRF_TYPE(PC,FUNC) pFunc = KPRF_OFF2PTR(PC,FUNC, pReport->pHdr->offFunctions + iFunc * sizeof(*pFunc), pReport->pHdr);
+    KPRF_TYPE(P,REPORTFUNC) pReportFunc = &pReport->paFunctions[iFunc];
+    while (iFunc-- > 0)
+    {
+        pFunc--;
+        pReportFunc--;
+
+        pReport->papSortedFunctions[iFunc] = pReportFunc;
+        pReportFunc->pFunc = pFunc;
+        pReportFunc->pModSeg = KPRF_NAME(ReportTreeGet)(pReport, pFunc->offModSeg);
+        pReportFunc->pSym = NULL;
+        pReportFunc->pLine = NULL;
+        if (pReportFunc->pModSeg)
+        {
+            /* Collect module segment and module statistics. */
+            KPRF_TYPE(P,REPORTMODSEG) pModSeg = pReportFunc->pModSeg;
+            pModSeg->cFunctions++;
+            pModSeg->OnStackTicks += pFunc->OnStack.SumTicks;
+            pModSeg->OnTopOfStackTicks += pFunc->OnTopOfStack.SumTicks;
+
+            KPRF_TYPE(P,REPORTMOD) pMod = pModSeg->pMod;
+            pMod->cFunctions++;
+            pMod->OnStackTicks += pFunc->OnStack.SumTicks;
+            pMod->OnTopOfStackTicks += pFunc->OnTopOfStack.SumTicks;
+
+            /* Get debug info. */
+            KDBGADDR offSegment = pFunc->uEntryPtr - pModSeg->pModSeg->uBasePtr;
+            int rc = kDbgModuleQuerySymbolA(pMod->pDbgMod, pModSeg->pModSeg->iSegment, offSegment, &pReportFunc->pSym);
+            /** @todo check displacement! */
+            if (rc)
+                pReportFunc->pSym = NULL;
+            rc = kDbgModuleQueryLineA(pMod->pDbgMod, pModSeg->pModSeg->iSegment, offSegment, &pReportFunc->pLine);
+            if (rc)
+                pReportFunc->pLine = NULL;
+        }
+    }
+    return 0;
+}
+
+
+/**
+ * Initializes the thread arrays.
+ *
+ * @returns 0 on success.
+ * @returns -1 on failure.
+ * @param   pReport     The report to work on.
+ */
+static int KPRF_NAME(AnalyseThreads)(KPRF_TYPE(P,REPORT) pReport)
+{
+    KU32 iThread = pReport->pHdr->cThreads;
+    KPRF_TYPE(PC,THREAD) pThread = KPRF_OFF2PTR(PC,THREAD, pReport->pHdr->offThreads + iThread * sizeof(*pThread), pReport->pHdr);
+    KPRF_TYPE(P,REPORTTHREAD) pReportThread = &pReport->paThreads[iThread];
+    while (iThread-- > 0)
+    {
+        pThread--;
+        pReportThread--;
+
+        pReport->papSortedThreads[iThread] = pReportThread;
+        pReportThread->pThread = pThread;
+
+        /* collect statistics */
+        pReport->ProfiledTicks += pThread->ProfiledTicks;
+        pReport->OverheadTicks += pThread->OverheadTicks;
+        pReport->SleepTicks += pThread->SleepTicks;
+        pReport->cCalls += pThread->cCalls;
+
+    }
+    return 0;
+}
+
+
+/**
+ * Analyses the data set, producing a report.
+ *
+ * @returns 0 on success.
+ * @returns -1 on failure.
+ *
+ * @param   pHdr        The data set.
+ * @param   ppReport    Where to store the report.
+ */
+static int KPRF_NAME(Analyse)(KPRF_TYPE(PC,HDR) pHdr, KPRF_TYPE(PP,REPORT) ppReport)
+{
+    *ppReport = NULL;
+
+    /* allocate it */
+    KPRF_TYPE(P,REPORT) pReport = KPRF_NAME(NewReport)(pHdr);
+    if (!pReport)
+        return -1;
+
+    /* read module segments */
+    int rc = KPRF_NAME(AnalyzeModSegs)(pReport);
+    if (!rc)
+    {
+        /* read functions. */
+        rc = KPRF_NAME(AnalyseFunctions)(pReport);
+        if (!rc)
+        {
+            /* read threads */
+            rc = KPRF_NAME(AnalyseThreads)(pReport);
+            if (!rc)
+            {
+                *ppReport = pReport;
+                return 0;
+            }
+        }
+    }
+
+    KPRF_NAME(DeleteReport)(pReport);
+    return rc;
+}
+
+
+/**
+ * Writes row with 32-bit value.
+ * @internal
+ */
+static void KPRF_NAME(HtmlWriteRowU32X32)(FILE *pOut, const char *pszName, KU32 u32, const char *pszUnit)
+{
+    fprintf(pOut,
+            "  <tr>\n"
+            "    <th>%s</th>\n"
+            "    <td colspan=\"6\">%u (0x%x)%s%s</td>\n"
+            "  </tr>\n",
+            pszName,
+            u32, u32, pszUnit ? " " : "", pszUnit ? pszUnit : "");
+}
+
+
+/**
+ * Writes row with 32-bit value.
+ * @internal
+ */
+static void KPRF_NAME(HtmlWriteRowU32)(FILE *pOut, const char *pszName, KU32 u32, const char *pszUnit)
+{
+    fprintf(pOut,
+            "  <tr>\n"
+            "    <th>%s</th>\n"
+            "    <td colspan=\"6\">%u%s%s</td>\n"
+            "  </tr>\n",
+            pszName,
+            u32, pszUnit ? " " : "", pszUnit ? pszUnit : "");
+}
+
+
+/**
+ * Writes row with 64-bit value.
+ * @internal
+ */
+static void KPRF_NAME(HtmlWriteRowU64)(FILE *pOut, const char *pszName, KU64 u64, const char *pszUnit)
+{
+    fprintf(pOut,
+            "  <tr>\n"
+            "    <th>%s</th>\n"
+            "    <td colspan=\"6\">% " KPRF_FMT_U64 " (0x%" KPRF_FMT_X64 ")%s%s</td>\n"
+            "  </tr>\n",
+            pszName,
+            u64, u64, pszUnit ? " " : "", pszUnit ? pszUnit : "");
+}
+
+
+/**
+ * Writes row with 64-bit hex value.
+ * @internal
+ */
+static void KPRF_NAME(HtmlWriteRowX64)(FILE *pOut, const char *pszName, KU64 u64, const char *pszUnit)
+{
+    fprintf(pOut,
+            "  <tr>\n"
+            "    <th>%s</th>\n"
+            "    <td colspan=\"6\">0x%" KPRF_FMT_X64 "%s%s</td>\n"
+            "  </tr>\n",
+            pszName,
+            u64, pszUnit ? " " : "", pszUnit ? pszUnit : "");
+}
+
+
+/**
+ * Writes a ticks.
+ */
+static void KPRF_NAME(HtmlWriteParts)(FILE *pOut, KU64 cTicks, KU64 cTotalTicks)
+{
+    /** U+2030 PER MILLE SIGN */
+    static const KU8 s_szPerMilleSignUtf8[4] = { 0xe2, 0x80, 0xb0, 0};
+
+    if (cTicks * 100 / cTotalTicks)
+    {
+        KU32 u = (KU32)((cTicks * 1000) / cTotalTicks);
+        fprintf(pOut, "%u.%01u%%", u / 10, u %10);
+    }
+    else //if (cTicks * 100000 / cTotalTicks)
+    {
+        KU32 u = (KU32)((cTicks * 100000) / cTotalTicks);
+        fprintf(pOut, "%u.%02u%s", u / 100, u % 100, s_szPerMilleSignUtf8);
+    }
+    /*
+    else if (cTicks * 1000000 / cTotalTicks)
+        fprintf(pOut, "%u ppm", (unsigned)((cTicks * 1000000) / cTotalTicks));
+    else
+        fprintf(pOut, "%u ppb", (unsigned)((cTicks * 1000000000) / cTotalTicks));
+    */
+}
+
+
+/**
+ * Writes a ticks.
+ */
+static void KPRF_NAME(HtmlWriteTicks)(FILE *pOut, KU64 cTicks, KU64 cTotalTicks)
+{
+    fprintf(pOut, "%" KPRF_FMT_U64 "", cTicks);
+    if (cTotalTicks)
+    {
+        fprintf(pOut, "</td><td class=\"PartsRow\">");
+        KPRF_NAME(HtmlWriteParts)(pOut, cTicks, cTotalTicks);
+    }
+}
+
+
+/**
+ * Writes row with ticks value.
+ *
+ * @param   pOut            Where to write.
+ * @aaran   pszName         The row name.
+ * @param   cTicks          The tick count.
+ * @param   cTotalTicks     If non-zero, this is used for cTicks / cTotalTicks.
+ * @internal
+ */
+static void KPRF_NAME(HtmlWriteRowTicks)(FILE *pOut, const char *pszName, KU64 cTicks, KU64 cTotalTicks)
+{
+    fprintf(pOut,
+            "  <tr>\n"
+            "    <th class=\"TicksRow\">%s</th>\n"
+            "    <td class=\"TicksRow\">",
+            pszName);
+    KPRF_NAME(HtmlWriteTicks)(pOut, cTicks, cTotalTicks);
+    fprintf(pOut,
+                     "</td><td colspan=\"%d\"/>\n"
+            "  </tr>\n",
+            cTotalTicks ? 4 : 5);
+}
+
+
+/**
+ * Writes row with a time stat value.
+ *
+ * @param   pOut            Where to write.
+ * @aaran   pszName         The row name.
+ * @param   cTicks          The tick count.
+ * @param   cTotalTicks     If non-zero, this is used for cTicks / cTotalTicks.
+ * @internal
+ */
+static void KPRF_NAME(HtmlWriteRowTimeStat)(FILE *pOut, const char *pszName, KPRF_TYPE(PC,TIMESTAT) pTimeStat, KU64 cTotalTicks)
+{
+    fprintf(pOut,
+            "  <tr>\n"
+            "    <th class=\"TicksRow\">%s</th>\n"
+            "    <td class=\"TicksRow\">",
+            pszName);
+    KPRF_NAME(HtmlWriteTicks)(pOut, pTimeStat->SumTicks, cTotalTicks);
+    fprintf(pOut,    "</td>\n"
+            "    <td class=\"MinMaxTicksRow\">");
+    KPRF_NAME(HtmlWriteTicks)(pOut, pTimeStat->MinTicks, cTotalTicks);
+    fprintf(pOut,    "</td>\n"
+            "    <td class=\"MinMaxTicksRow\">");
+    KPRF_NAME(HtmlWriteTicks)(pOut, pTimeStat->MaxTicks, cTotalTicks);
+    fprintf(pOut,    "</td>\n"
+            "  </tr>\n");
+}
+
+
+/**
+ * Writes row with calls value.
+ *
+ * @param   pOut            Where to write.
+ * @aaran   pszName         The row name.
+ * @param   cCalls          The call count.
+ * @param   cTotalCalls     This is used for cCalls / cTotalCalls.
+ * @internal
+ */
+static void KPRF_NAME(HtmlWriteRowCalls)(FILE *pOut, const char *pszName, KU64 cCalls, KU64 cTotalCalls)
+{
+    fprintf(pOut,
+            "  <tr>\n"
+            "    <th class=\"CallsRow\">%s</th>\n"
+            "    <td class=\"CallsRow\">%" KPRF_FMT_U64"</td><td class=\"PartsRow\">",
+            pszName, cCalls);
+    KPRF_NAME(HtmlWriteParts)(pOut, cCalls, cTotalCalls);
+    fprintf(pOut, "</td><td colspan=4></td>"
+            "  </tr>\n");
+}
+
+
+/**
+ * Writes row with pointer value.
+ * @internal
+ */
+static void KPRF_NAME(HtmlWriteRowUPTR)(FILE *pOut, const char *pszName, KPRF_TYPE(,UPTR) uPtr, const char *pszUnit)
+{
+    fprintf(pOut,
+            "  <tr>\n"
+            "    <th>%s</th>\n"
+            "    <td colspan=\"6\">%" KPRF_FMT_UPTR "%s%s</td>\n"
+            "  </tr>\n",
+            pszName,
+            uPtr, pszUnit ? " " : "", pszUnit ? pszUnit : "");
+}
+
+
+/**
+ * Writes row with string value.
+ * @internal
+ */
+static void KPRF_NAME(HtmlWriteRowString)(FILE *pOut, const char *pszName, const char *pszClass, const char *pszFormat, ...)
+{
+    fprintf(pOut,
+             "  <tr>\n"
+             "    <th>%s</th>\n"
+             "    <td%s%s%s colspan=\"6\">",
+             pszName,
+             pszClass ? " class=\"" : "", pszClass ? pszClass : "", pszClass ? "\"" : "");
+    va_list va;
+    va_start(va, pszFormat);
+    vfprintf(pOut, pszFormat, va);
+    va_end(va);
+    fprintf(pOut,      "</td>\n"
+             "  </tr>\n");
+}
+
+
+/**
+ * The first column
+ */
+typedef enum KPRF_TYPE(,FIRSTCOLUMN)
+{
+    KPRF_TYPE(,FIRSTCOLUMN_ON_STACK) = 0,
+    KPRF_TYPE(,FIRSTCOLUMN_ON_TOP_OF_STACK),
+    KPRF_TYPE(,FIRSTCOLUMN_CALLS_TO),
+    KPRF_TYPE(,FIRSTCOLUMN_CALLS_FROM),
+    KPRF_TYPE(,FIRSTCOLUMN_MAX)
+} KPRF_TYPE(,FIRSTCOLUMN);
+
+
+/**
+ * Prints the table with the sorted functions.
+ * The tricky bit is that the sorted column should be to the left of the function name.
+ */
+static void KPRF_NAME(HtmlWriteSortedFunctions)(KPRF_TYPE(P,REPORT) pReport, FILE *pOut, const char *pszName,
+                                                const char *pszTitle, KPRF_TYPE(,FIRSTCOLUMN) enmFirst)
+{
+    fprintf(pOut,
+            "<h2><a name=\"%s\">%s</a></h2>\n"
+            "\n",
+            pszName, pszTitle);
+
+    fprintf(pOut,
+            "<table class=\"FunctionsSorted\">\n"
+            "  <tr>\n"
+            "    <th/>\n");
+    static const char *s_pszHeaders[KPRF_TYPE(,FIRSTCOLUMN_MAX) * 2] =
+    {
+        "    <th colspan=8><a href=\"#Functions-TimeOnStack\">Time On Stack</a> (ticks)</th>\n",
+        "    <th colspan=2><a href=\"#Functions-TimeOnStack\">Sum</a></th>\n"
+        "    <th colspan=2><a href=\"#Functions-TimeOnStack-Min\">Min</a></th>\n"
+        "    <th colspan=2><a href=\"#Functions-TimeOnStack-Avg\">Average</a></th>\n"
+        "    <th colspan=2><a href=\"#Functions-TimeOnStack-Max\">Max</a></th>\n",
+
+        "    <th colspan=8><a href=\"#Functions-TimeOnTopOfStack\">Time On To Top</a> (ticks)</th>\n",
+        "    <th colspan=2><a href=\"#Functions-TimeOnTopOfStack\">Sum</a></th>\n"
+        "    <th colspan=2><a href=\"#Functions-TimeOnTopOfStack-Min\">Min</a></th>\n"
+        "    <th colspan=2><a href=\"#Functions-TimeOnTopOfStack-Avg\">Average</a></th>\n"
+        "    <th colspan=2><a href=\"#Functions-TimeOnTopOfStack-Max\">Max</a></th>\n",
+
+        "    <th colspan=2><a href=\"#Functions-CallsTo\">Calls To</a></th>\n",
+        "    <th/><th/>\n",
+
+        "    <th colspan=2><a href=\"#Functions-CallsFrom\">Calls From</a></th>\n",
+        "    <th/><th/>\n",
+    };
+
+    fprintf(pOut, "%s",  s_pszHeaders[enmFirst * 2]);
+    fprintf(pOut, "    <th>Function</th>\n");
+    for (unsigned i = (enmFirst + 1) % KPRF_TYPE(,FIRSTCOLUMN_MAX); i != enmFirst; i = (i + 1) % KPRF_TYPE(,FIRSTCOLUMN_MAX))
+        fprintf(pOut, "%s",  s_pszHeaders[i * 2]);
+    fprintf(pOut,
+            "  </tr>\n"
+            "  <tr>\n"
+            "    <th/>\n");
+    fprintf(pOut, "%s",  s_pszHeaders[enmFirst * 2 + 1]);
+    fprintf(pOut, "    <th/>\n");
+    for (unsigned i = (enmFirst + 1) % KPRF_TYPE(,FIRSTCOLUMN_MAX); i != enmFirst; i = (i + 1) % KPRF_TYPE(,FIRSTCOLUMN_MAX))
+        fprintf(pOut, "%s",  s_pszHeaders[i * 2 + 1]);
+    fprintf(pOut,
+            "  </tr>\n");
+
+    for (KU32 iFunc = 0; iFunc < pReport->pHdr->cFunctions; iFunc++)
+    {
+        KPRF_TYPE(P,REPORTFUNC) pReportFunc = pReport->papSortedFunctions[iFunc];
+        KPRF_TYPE(PC,FUNC) pFunc = pReportFunc->pFunc;
+        fprintf(pOut,
+                "  <tr>\n"
+                "    <td>%u</td>\n",
+               iFunc);
+
+        unsigned i = enmFirst;
+        do
+        {
+            switch (i)
+            {
+                case KPRF_TYPE(,FIRSTCOLUMN_ON_STACK):
+                    fprintf(pOut,
+                            "    <td class=\"Ticks\">%" KPRF_FMT_U64 "</td><td class=\"Parts\">",
+                            pFunc->OnStack.SumTicks);
+                    KPRF_NAME(HtmlWriteParts)(pOut, pFunc->OnStack.SumTicks, pReport->ProfiledTicks);
+                    fprintf(pOut,       "</td>\n"
+                            "    <td class=\"MinMaxTicks\">%" KPRF_FMT_U64 "</td><td class=\"Parts\">",
+                            pFunc->OnStack.MinTicks);
+                    KPRF_NAME(HtmlWriteParts)(pOut, pFunc->OnStack.MinTicks, pReport->ProfiledTicks);
+                    fprintf(pOut,       "</td>\n"
+                            "    <td class=\"MinMaxTicks\">%" KPRF_FMT_U64 "</td><td class=\"Parts\">",
+                            pFunc->OnStack.SumTicks / pFunc->cOnStack);
+                    KPRF_NAME(HtmlWriteParts)(pOut, pFunc->OnStack.MinTicks, pReport->ProfiledTicks);
+                    fprintf(pOut,       "</td>\n"
+                            "    <td class=\"MinMaxTicks\">%" KPRF_FMT_U64 "</td><td class=\"Parts\">",
+                            pFunc->OnStack.MaxTicks);
+                    KPRF_NAME(HtmlWriteParts)(pOut, pFunc->OnStack.MaxTicks, pReport->ProfiledTicks);
+                    fprintf(pOut,       "</td>\n");
+                    break;
+
+                case KPRF_TYPE(,FIRSTCOLUMN_ON_TOP_OF_STACK):
+                    fprintf(pOut,
+                            "    <td class=\"Ticks\">%" KPRF_FMT_U64 "</td><td class=\"Parts\">",
+                            pFunc->OnTopOfStack.SumTicks);
+                    KPRF_NAME(HtmlWriteParts)(pOut, pFunc->OnTopOfStack.SumTicks, pReport->ProfiledTicks);
+                    fprintf(pOut,       "</td>\n"
+                            "    <td class=\"MinMaxTicks\">%" KPRF_FMT_U64 "</td><td class=\"Parts\">",
+                            pFunc->OnTopOfStack.MinTicks);
+                    KPRF_NAME(HtmlWriteParts)(pOut, pFunc->OnTopOfStack.MinTicks, pReport->ProfiledTicks);
+                    fprintf(pOut,       "</td>\n"
+                            "    <td class=\"MinMaxTicks\">%" KPRF_FMT_U64 "</td><td class=\"Parts\">",
+                            pFunc->OnTopOfStack.SumTicks / pFunc->cOnStack);
+                    KPRF_NAME(HtmlWriteParts)(pOut, pFunc->OnTopOfStack.MinTicks, pReport->ProfiledTicks);
+                    fprintf(pOut,       "</td>\n"
+                            "    <td class=\"MinMaxTicks\">%" KPRF_FMT_U64 "</td><td class=\"Parts\">",
+                            pFunc->OnTopOfStack.MaxTicks);
+                    KPRF_NAME(HtmlWriteParts)(pOut, pFunc->OnTopOfStack.MaxTicks, pReport->ProfiledTicks);
+                    fprintf(pOut,       "</td>\n");
+                    break;
+
+                case KPRF_TYPE(,FIRSTCOLUMN_CALLS_TO):
+                    fprintf(pOut,
+                            "    <td class=\"Calls\">%" KPRF_FMT_U64 "</td><td Class=\"Parts\">",
+                            pFunc->cOnStack);
+                    KPRF_NAME(HtmlWriteParts)(pOut, pFunc->cOnStack, pReport->cCalls);
+                    fprintf(pOut,       "</td>\n");
+                    break;
+
+                case KPRF_TYPE(,FIRSTCOLUMN_CALLS_FROM):
+                    fprintf(pOut,
+                            "    <td class=\"Calls\">%" KPRF_FMT_U64 "</td><td Class=\"Parts\">",
+                            pFunc->cCalls);
+                    KPRF_NAME(HtmlWriteParts)(pOut, pFunc->cCalls, pReport->cCalls);
+                    fprintf(pOut,       "</td>\n");
+                    break;
+
+                default:
+                    break;
+            }
+
+            /* inject the function column */
+            if (i == enmFirst)
+            {
+                fprintf(pOut,
+                        "    <td><a href=\"#Func-%u\">",
+                        (unsigned)(uintptr_t)(pReportFunc - pReport->paFunctions));
+                if (pReportFunc->pSym)
+                    fprintf(pOut, "%s</a></td>\n", pReportFunc->pSym->szName);
+                else
+                    fprintf(pOut, "%" KPRF_FMT_UPTR "</a></td>\n", pFunc->uEntryPtr);
+            }
+
+            /* next */
+            i = (i + 1) % KPRF_TYPE(,FIRSTCOLUMN_MAX);
+        } while (i != enmFirst);
+
+        fprintf(pOut,
+                "  </tr>\n");
+    }
+    fprintf(pOut,
+            "</table>\n"
+            "\n");
+
+}
+
+
+/**
+ * Writes an HTML report.
+ *
+ * @returns 0 on success.
+ * @returns -1 on failure.
+ * @param   pReport     The report to put into HTML.
+ * @param   pOut        The file stream to write the HTML to.
+ */
+static int KPRF_NAME(WriteHtmlReport)(KPRF_TYPE(P,REPORT) pReport, FILE *pOut)
+{
+    KPRF_TYPE(PC,HDR) pHdr = pReport->pHdr;
+
+    /*
+     * Write the standard html.
+     */
+    fprintf(pOut,
+            "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">\n"
+            "<html>\n"
+            "<head>\n"
+            "  <meta http-equiv=\"Content-Type\" content=\"text/html;charset=utf-8\">\n"
+            "  <title>kProfiler 2 - %s</title>\n"
+            "</head>\n"
+            "<style>\n"
+            "table\n"
+            "{\n"
+//            "  width: 90%%;\n"
+            "  background: #999999;\n"
+//            "  margin-top: .6em;\n"
+//            "  margin-bottom: .3em;\n"
+            "}\n"
+            "th\n"
+            "{\n"
+            "  padding: 1px 4px;\n"
+            "  background: #cccccc;\n"
+//            "  text-align: left;\n"
+            "  font-size: 90%%;\n"
+            //"  width: 30%%;\n"
+            "}\n"
+            "td\n"
+            "{\n"
+            "  padding: 1px 4px;\n"
+            "  background: #ffffff;\n"
+            "  font-size: 90%%;\n"
+            "}\n"
+            "td.Ticks\n"
+            "{\n"
+            "  text-align: right;\n"
+            "}\n"
+            "td.TicksRow\n"
+            "{\n"
+            "  text-align: right;\n"
+            "}\n"
+            "td.MinMaxTicks\n"
+            "{\n"
+            "  text-align: right;\n"
+            "}\n"
+            "td.MinMaxTicksRow\n"
+            "{\n"
+            "  text-align: right;\n"
+            "}\n"
+            "td.Parts\n"
+            "{\n"
+            "  text-align: right;\n"
+            "}\n"
+            "td.PartsRow\n"
+            "{\n"
+            "  text-align: left;\n"
+            "}\n"
+            "td.Calls\n"
+            "{\n"
+            "  text-align: right;\n"
+            "}\n"
+            "td.CallsRow\n"
+            "{\n"
+            "  text-align: right;\n"
+            "}\n"
+            "td.BlankRow\n"
+            "{\n"
+            "  background: #e0e0e0;\n"
+            "}\n"
+            "td.Name\n"
+            "{\n"
+            "  font-weight: bold;\n"
+            "}\n"
+            "table.Summary th\n"
+            "{\n"
+            "  width:200px;\n"
+            "}\n"
+            "table.Thread\n"
+            "{\n"
+            "  min-width:60%%\n"
+            "}\n"
+            "table.Thread th\n"
+            "{\n"
+            "  width:200px;\n"
+            "}\n"
+            "table.Functions\n"
+            "{\n"
+            "  width:60%%;\n"
+            "}\n"
+            "table.Functions th\n"
+            "{\n"
+            "  width:200px;\n"
+            "}\n"
+            "table.Modules\n"
+            "{\n"
+            "  width:60%%;\n"
+            "}\n"
+            "table.Modules th\n"
+            "{\n"
+            "  width:200px;\n"
+            "}\n"
+            "table.FunctionsSorted\n"
+            "{\n"
+            "}\n"
+            "</style>\n"
+            "<body topmargin=\"0\">\n"
+            ,
+            pHdr->offCommandLine
+                ? (const char *)KPRF_OFF2PTR(P,FUNC, pHdr->offCommandLine, pHdr)
+                : ""
+            );
+
+    /*
+     * Table of contents.
+     */
+    fprintf(pOut,
+            "<h2>Table of Contents</h2>\n"
+            "\n"
+            "<ul>\n"
+            "  <li><a href=\"#Summary\"  >1.0 Summary</a></li>\n"
+            "  <li><a href=\"#Functions\">2.0 Functions</a></li>\n"
+            "      <ul>\n"
+            "        <li><a href=\"#Functions-TimeOnStack\"     >2.1 Time On Stack</a></li>\n"
+            "          <ul>\n"
+            "            <li><a href=\"#Functions-TimeOnStack-Avg\"     >2.2.1 Time On Stack - Average</a></li>\n"
+            "            <li><a href=\"#Functions-TimeOnStack-Min\"     >2.2.1 Time On Stack - Min</a></li>\n"
+            "            <li><a href=\"#Functions-TimeOnStack-Max\"     >2.2.2 Time On Stack - Max</a></li>\n"
+            "          </ul>\n"
+            "        <li><a href=\"#Functions-TimeOnTopOfStack\">2.3 Time On Top Of Stack</a></li>\n"
+            "          <ul>\n"
+            "            <li><a href=\"#Functions-TimeOnTopOfStack-Avg\">2.3.1 Time On Top Of Stack - Average</a></li>\n"
+            "            <li><a href=\"#Functions-TimeOnTopOfStack-Min\">2.3.2 Time On Top Of Stack - Min</a></li>\n"
+            "            <li><a href=\"#Functions-TimeOnTopOfStack-Max\">2.3.3 Time On Top Of Stack - Max</a></li>\n"
+            "          </ul>\n"
+            "        <li><a href=\"#Functions-CallsTo\"         >2.3 Calls To</a></li>\n"
+            "        <li><a href=\"#Functions-CallsFrom\"       >2.4 Calls From</a></li>\n"
+            "        <li><a href=\"#Function-Details\"          >2.5 Function Details</a></li>\n"
+            "      </ul>\n"
+            "  <li><a href=\"#Threads\"  >3.0 Threads</a></li>\n"
+            "  <li><a href=\"#Modules\"  >4.0 Modules</a></li>\n"
+            "</ul>\n"
+            "\n"
+            "\n");
+
+    /*
+     * Summary.
+     */
+    fprintf(pOut,
+            "<h2><a name=\"Summary\">1.0 Summary</a></h2>\n"
+            "\n"
+            "<p>\n"
+            "<table class=\"Summary\">\n");
+    if (pHdr->offCommandLine)
+        KPRF_NAME(HtmlWriteRowString)(pOut, "Command Line", NULL, "%s", (const char *)KPRF_OFF2PTR(P,FUNC, pHdr->offCommandLine, pHdr));
+    KPRF_NAME(HtmlWriteRowU32X32)(pOut, "Threads", pHdr->cThreads, NULL);
+    KPRF_NAME(HtmlWriteRowU32X32)(pOut, "Modules", pReport->cMods, NULL);
+    KPRF_NAME(HtmlWriteRowU32X32)(pOut, "Functions", pHdr->cFunctions, NULL);
+    KPRF_NAME(HtmlWriteRowTicks)(pOut, "Profiled", pReport->ProfiledTicks, pReport->ProfiledTicks);
+    KPRF_NAME(HtmlWriteRowTicks)(pOut, "Sleep", pReport->SleepTicks, pReport->ProfiledTicks);
+    KPRF_NAME(HtmlWriteRowTicks)(pOut, "Overhead", pReport->OverheadTicks, pReport->ProfiledTicks + pReport->OverheadTicks);
+    KPRF_NAME(HtmlWriteRowCalls)(pOut, "Recorded Calls", pReport->cCalls, pReport->cCalls);
+    fprintf(pOut, "<tr><td class=\"BlankRow\" colspan=7>&nbsp;</td></tr>\n");
+    KPRF_NAME(HtmlWriteRowString)(pOut, "kProfiler Version ", NULL, "Mark 2 Alpha 1");
+    KPRF_NAME(HtmlWriteRowString)(pOut, "kProfiler Build Time ", NULL, __DATE__ " " __TIME__);
+    fprintf(pOut,
+            "</table>\n"
+            "</p>\n"
+            "\n"
+            "\n");
+
+    /*
+     * Functions.
+     */
+    fprintf(pOut,
+            "<h2><a name=\"Functions\">2.0 Functions</a></h2>\n"
+            "\n");
+
+    qsort(&pReport->papSortedFunctions[0], pHdr->cFunctions, sizeof(pReport->papSortedFunctions[0]), KPRF_NAME(FuncCompareOnStack));
+    KPRF_NAME(HtmlWriteSortedFunctions)(pReport, pOut, "Functions-TimeOnStack",     "2.1 Time On Stack", KPRF_TYPE(,FIRSTCOLUMN_ON_STACK));
+    qsort(&pReport->papSortedFunctions[0], pHdr->cFunctions, sizeof(pReport->papSortedFunctions[0]), KPRF_NAME(FuncCompareOnStackAvg));
+    KPRF_NAME(HtmlWriteSortedFunctions)(pReport, pOut, "Functions-TimeOnStack-Avg",     "2.2.1 Time On Stack - Average", KPRF_TYPE(,FIRSTCOLUMN_ON_STACK));
+    qsort(&pReport->papSortedFunctions[0], pHdr->cFunctions, sizeof(pReport->papSortedFunctions[0]), KPRF_NAME(FuncCompareOnStackMin));
+    KPRF_NAME(HtmlWriteSortedFunctions)(pReport, pOut, "Functions-TimeOnStack-Min",     "2.2.2 Time On Stack - Min", KPRF_TYPE(,FIRSTCOLUMN_ON_STACK));
+    qsort(&pReport->papSortedFunctions[0], pHdr->cFunctions, sizeof(pReport->papSortedFunctions[0]), KPRF_NAME(FuncCompareOnStackMax));
+    KPRF_NAME(HtmlWriteSortedFunctions)(pReport, pOut, "Functions-TimeOnStack-Max",     "2.2.3 Time On Stack - Max", KPRF_TYPE(,FIRSTCOLUMN_ON_STACK));
+
+    qsort(&pReport->papSortedFunctions[0], pHdr->cFunctions, sizeof(pReport->papSortedFunctions[0]), KPRF_NAME(FuncCompareOnTopOfStack));
+    KPRF_NAME(HtmlWriteSortedFunctions)(pReport, pOut, "Functions-TimeOnTopOfStack",    "2.2 Time On Top Of Stack", KPRF_TYPE(,FIRSTCOLUMN_ON_TOP_OF_STACK));
+    qsort(&pReport->papSortedFunctions[0], pHdr->cFunctions, sizeof(pReport->papSortedFunctions[0]), KPRF_NAME(FuncCompareOnTopOfStackAvg));
+    KPRF_NAME(HtmlWriteSortedFunctions)(pReport, pOut, "Functions-TimeOnTopOfStack-Avg","2.2.1 Time On Top Of Stack - Average", KPRF_TYPE(,FIRSTCOLUMN_ON_TOP_OF_STACK));
+    qsort(&pReport->papSortedFunctions[0], pHdr->cFunctions, sizeof(pReport->papSortedFunctions[0]), KPRF_NAME(FuncCompareOnTopOfStackMin));
+    KPRF_NAME(HtmlWriteSortedFunctions)(pReport, pOut, "Functions-TimeOnTopOfStack-Min","2.2.2 Time On Top Of Stack - Min", KPRF_TYPE(,FIRSTCOLUMN_ON_TOP_OF_STACK));
+    qsort(&pReport->papSortedFunctions[0], pHdr->cFunctions, sizeof(pReport->papSortedFunctions[0]), KPRF_NAME(FuncCompareOnTopOfStackMax));
+    KPRF_NAME(HtmlWriteSortedFunctions)(pReport, pOut, "Functions-TimeOnTopOfStack-Max","2.2.3 Time On Top Of Stack - Max", KPRF_TYPE(,FIRSTCOLUMN_ON_TOP_OF_STACK));
+
+    qsort(&pReport->papSortedFunctions[0], pHdr->cFunctions, sizeof(pReport->papSortedFunctions[0]), KPRF_NAME(FuncCompareCallsTo));
+    KPRF_NAME(HtmlWriteSortedFunctions)(pReport, pOut, "Functions-CallsTo",         "2.4 Calls To", KPRF_TYPE(,FIRSTCOLUMN_CALLS_TO));
+
+    qsort(&pReport->papSortedFunctions[0], pHdr->cFunctions, sizeof(pReport->papSortedFunctions[0]), KPRF_NAME(FuncCompareCallsFrom));
+    KPRF_NAME(HtmlWriteSortedFunctions)(pReport, pOut, "Functions-CallsFrom",       "2.5 Calls From", KPRF_TYPE(,FIRSTCOLUMN_CALLS_FROM));
+
+    fprintf(pOut,
+            "<h2><a name=\"Function-Details\">2.5 Function Details</a></h2>\n"
+            "\n"
+            "<p>\n"
+            "<table class=\"Functions\">\n");
+    for (KU32 iFunc = 0; iFunc < pHdr->cFunctions; iFunc++)
+    {
+        KPRF_TYPE(P,REPORTFUNC) pReportFunc = &pReport->paFunctions[iFunc];
+        KPRF_TYPE(PC,FUNC) pFunc = pReportFunc->pFunc;
+
+        fprintf(pOut,
+                "<tr><td class=\"BlankRow\" colspan=7><a name=\"Func-%u\">&nbsp;</a></td></tr>\n",
+                iFunc);
+        KPRF_NAME(HtmlWriteRowU32)(pOut, "Function No.", iFunc, NULL);
+        if (pReportFunc->pSym)
+            KPRF_NAME(HtmlWriteRowString)(pOut, "Name", "Name", "%s", pReportFunc->pSym->szName);
+        if (pReportFunc->pLine)
+            KPRF_NAME(HtmlWriteRowString)(pOut, "Location", NULL, "<a href=\"file:///%s\">%s</a> Line #%d",
+                                          pReportFunc->pLine->szFile, pReportFunc->pLine->szFile, pReportFunc->pLine->iLine);
+        if (pReportFunc->pModSeg)
+        {
+            KPRF_NAME(HtmlWriteRowString)(pOut, "Module", NULL, "<a href=\"#Mod-%u\">%s</a>",
+                                          pReportFunc->pModSeg->pMod->iMod, pReportFunc->pModSeg->pModSeg->szPath);
+            KPRF_NAME(HtmlWriteRowString)(pOut, "Segment:Offset", NULL, "%x:%" KPRF_FMT_UPTR,
+                                          pReportFunc->pModSeg->pModSeg->iSegment,
+                                          pFunc->uEntryPtr - pReportFunc->pModSeg->pModSeg->uBasePtr);
+        }
+        KPRF_NAME(HtmlWriteRowUPTR)(pOut, "Address", pFunc->uEntryPtr, NULL);
+
+        KPRF_NAME(HtmlWriteRowTimeStat)(pOut, "On Stack", &pFunc->OnStack, pReport->ProfiledTicks);
+        KPRF_NAME(HtmlWriteRowTimeStat)(pOut, "On Top Of Stack", &pFunc->OnTopOfStack, pReport->ProfiledTicks);
+        KPRF_NAME(HtmlWriteRowCalls)(pOut, "Calls To", pFunc->cOnStack, pReport->cCalls);
+        KPRF_NAME(HtmlWriteRowCalls)(pOut, "Calls From", pFunc->cCalls, pReport->cCalls);
+
+        fprintf(pOut,
+                "\n");
+    }
+    fprintf(pOut,
+            "</table>\n"
+            "</p>\n"
+            "\n");
+
+    /*
+     * Threads.
+     */
+    fprintf(pOut,
+            "<h2><a name=\"Threads\">3.0 Threads</a></h2>\n"
+            "\n"
+            "<p>\n"
+            "<table class=\"Threads\">\n");
+
+    for (KU32 iThread = 0; iThread < pHdr->cThreads; iThread++)
+    {
+        KPRF_TYPE(PC,THREAD) pThread = pReport->paThreads[iThread].pThread;
+
+        fprintf(pOut,
+                "<tr><td class=\"BlankRow\" colspan=7><a name=\"Thread-%u\">&nbsp;</a></td></tr>\n",
+                iThread);
+        KPRF_NAME(HtmlWriteRowU32)(pOut, "Thread No.", iThread, NULL);
+        KPRF_NAME(HtmlWriteRowX64)(pOut, "Thread Id", pThread->ThreadId, NULL);
+        if (pThread->szName[0])
+            KPRF_NAME(HtmlWriteRowString)(pOut, "Name", "Name", "%s", pThread->szName);
+        KPRF_NAME(HtmlWriteRowUPTR)(pOut, "Stack Base Address", pThread->uStackBasePtr, NULL);
+        KPRF_NAME(HtmlWriteRowUPTR)(pOut, "Max Stack Depth", pThread->cbMaxStack, "bytes");
+        //KPRF_NAME(HtmlWriteRowUPTR)(pOut, "Max Stack Depth", pThread->cMaxFrames, "frames"); /** @todo max stack frames! */
+        KPRF_NAME(HtmlWriteRowTicks)(pOut, "Profiled", pThread->ProfiledTicks, pReport->ProfiledTicks);
+        KPRF_NAME(HtmlWriteRowTicks)(pOut, "Sleep", pThread->SleepTicks, pReport->ProfiledTicks);
+        KPRF_NAME(HtmlWriteRowTicks)(pOut, "Overhead", pThread->OverheadTicks, pReport->ProfiledTicks + pReport->OverheadTicks);
+        KPRF_NAME(HtmlWriteRowCalls)(pOut, "Recorded Calls",  pThread->cCalls, pReport->cCalls);
+        KPRF_NAME(HtmlWriteRowU64)(pOut, "Unwinds", pThread->cUnwinds, NULL);
+        KPRF_NAME(HtmlWriteRowU64)(pOut, "Profiler Stack Overflows", pThread->cOverflows, NULL);
+        KPRF_NAME(HtmlWriteRowU64)(pOut, "Profiler Stack Switch Rejects", pThread->cStackSwitchRejects, NULL);
+
+        fprintf(pOut,
+                "\n");
+    }
+    fprintf(pOut,
+            "</table>\n"
+            "</p>\n"
+            "\n");
+
+
+    /*
+     * Modules.
+     */
+    fprintf(pOut,
+            "<h2><a name=\"Modules\">4.0 Modules</a></h2>\n"
+            "\n"
+            "<p>\n"
+            "<table class=\"Modules\">\n");
+
+    KPRF_TYPE(P,REPORTMOD) pMod = pReport->pFirstMod;
+    KU32 iMod = 0;
+    while (pMod)
+    {
+        fprintf(pOut,
+                "<a name=\"Mod-%u\">\n"
+                "<tr><td class=\"BlankRow\" colspan=7><a name=\"Module-%u\">&nbsp;</a></td></tr>\n",
+                iMod, iMod);
+        KPRF_NAME(HtmlWriteRowU32)(pOut, "Module No.", iMod, NULL);
+        KPRF_NAME(HtmlWriteRowString)(pOut, "Name", "Name", "%s", pMod->pFirstSeg->pModSeg->szPath);
+
+        for (KPRF_TYPE(P,REPORTMODSEG) pSeg = pMod->pFirstSeg; pSeg; pSeg = pSeg->pNext)
+        {
+            char szName[64];
+            sprintf(szName, "Segment No.%u - Base", pSeg->pModSeg->iSegment);
+            KPRF_NAME(HtmlWriteRowUPTR)(pOut, szName, pSeg->pModSeg->uBasePtr, NULL);
+            sprintf(szName, "Segment No.%u - Size", pSeg->pModSeg->iSegment);
+            KPRF_NAME(HtmlWriteRowUPTR)(pOut, szName,
+                                        pSeg->pModSeg->cbSegmentMinusOne + 1 > pSeg->pModSeg->cbSegmentMinusOne
+                                        ? pSeg->pModSeg->cbSegmentMinusOne + 1
+                                        : pSeg->pModSeg->cbSegmentMinusOne,
+                                        NULL);
+        }
+
+        KPRF_NAME(HtmlWriteRowTicks)(pOut, "On Stack", pMod->OnStackTicks, pReport->ProfiledTicks);
+        KPRF_NAME(HtmlWriteRowTicks)(pOut, "On Top Of Stack", pMod->OnTopOfStackTicks, pReport->ProfiledTicks);
+        KPRF_NAME(HtmlWriteRowU32)(pOut, "Functions", pMod->cFunctions, NULL);
+
+        fprintf(pOut,
+                "\n");
+
+        /* next */
+        iMod++;
+        pMod = pMod->pNext;
+    }
+    fprintf(pOut,
+            "</table>\n"
+            "</p>\n"
+            "\n");
+
+
+    /*
+     * The End.
+     */
+    fprintf(pOut,
+            "</body>\n"
+            "</html>\n");
+    return 0;
+}
diff --git a/src/lib/kStuff/kProfiler2/prfx86msc.asm b/src/lib/kStuff/kProfiler2/prfx86msc.asm
new file mode 100644
index 0000000..c733958
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/prfx86msc.asm
@@ -0,0 +1,393 @@
+; $Id: prfx86msc.asm 29 2009-07-01 20:30:29Z bird $
+;; @file
+; kProfiler Mark 2 - Microsoft C/C++ Compiler Interaction, x86.
+;
+
+;
+; Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+;
+; Permission is hereby granted, free of charge, to any person
+; obtaining a copy of this software and associated documentation
+; files (the "Software"), to deal in the Software without
+; restriction, including without limitation the rights to use,
+; copy, modify, merge, publish, distribute, sublicense, and/or sell
+; copies of the Software, and to permit persons to whom the
+; Software is furnished to do so, subject to the following
+; conditions:
+;
+; The above copyright notice and this permission notice shall be
+; included in all copies or substantial portions of the Software.
+;
+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+; OTHER DEALINGS IN THE SOFTWARE.
+;
+
+[section .data]
+;
+g_fCalibrated:
+        dd 0
+g_OverheadAdj:
+        dd 0
+
+[section .text]
+
+extern KPRF_ENTER
+extern KPRF_LEAVE
+
+global __penter
+global __pexit
+
+;ifdef  UNDEFINED
+global common_return_path
+global common_overhead
+global common_no_overhead
+global calibrate
+global calib_inner_update_minimum
+global calib_inner_next
+global calib_outer_dec
+global calib_outer_inc
+global calib_done
+global calib_nullproc
+;endif
+
+
+;;
+; On x86 the call to this function has been observed to be put before
+; creating the stack frame, as the very first instruction in the function.
+;
+; Thus the stack layout is as follows:
+;       24      return address of the calling function.
+;       20      our return address - the address of the calling function + 5.
+;       1c      eax
+;       18      edx
+;       14      eflags
+;       10      ecx
+;       c       tsc high       - param 3
+;       8       tsc low
+;       4       frame pointer  - param 2
+;       0       function ptr   - param 1
+;
+;
+align 16
+__penter:
+        ; save volatile register and get the time stamp.
+        push    eax
+        push    edx
+        rdtsc
+        pushfd
+        push    ecx
+
+        ; setting up the enter call frame (cdecl).
+        sub     esp, 4 + 4 + 8
+        mov     [esp + 0ch], edx        ; Param 3 - the timestamp
+        mov     [esp + 08h], eax
+        lea     edx, [esp + 24h]        ; Param 2 - frame pointer (pointer to the return address of the function calling us)
+        mov     [esp + 04h], edx
+        mov     eax, [esp + 20h]        ; Param 1 - The function address
+        sub     eax, 5                  ; call instruction
+        mov     [esp], eax
+
+        call    KPRF_ENTER
+        jmp     common_return_path
+
+
+;;
+; On x86 the call to this function has been observed to be put right before
+; return instruction. This fact matters since since we have to calc the same
+; stack address as in _penter.
+;
+; Thus the stack layout is as follows:
+;       24      return address of the calling function.
+;       20      our return address - the address of the calling function + 5.
+;       1c      eax
+;       18      edx
+;       14      eflags
+;       10      ecx
+;       c       tsc high       - param 3
+;       8       tsc low
+;       4       frame pointer  - param 2
+;       0       function ptr   - param 1
+;
+;
+align 16
+__pexit:
+        ; save volatile register and get the time stamp.
+        push    eax
+        push    edx
+        rdtsc
+        pushfd
+        push    ecx
+
+        ; setting up the leave call frame (cdecl).
+        sub     esp, 4 + 4 + 8
+        mov     [esp + 0ch], edx        ; Param 3 - the timestamp
+        mov     [esp + 08h], eax
+        lea     edx, [esp + 24h]        ; Param 2 - frame pointer (pointer to the return address of the function calling us)
+        mov     [esp + 04h], edx
+        mov     eax, [esp + 20h]        ; Param 1 - Some address in the function.
+        sub     eax, 5                  ; call instruction
+        mov     [esp], eax
+
+        call    KPRF_LEAVE
+        jmp common_return_path
+
+
+;;
+; This is the common return path for both the enter and exit hooks.
+; It's kept common because we can then use the same overhead adjustment
+; and save some calibration efforts. It also saves space :-)
+align 16
+common_return_path:
+        ; Update overhead
+        test    eax, eax
+        jz      common_no_overhead
+        cmp     byte [g_fCalibrated], 0
+        jnz     common_overhead
+        call    calibrate
+common_overhead:
+        mov     ecx, eax                ; ecx <- pointer to overhead counter.
+        mov     eax, [g_OverheadAdj]    ; apply the adjustment before reading tsc
+        sub     [esp + 08h], eax
+        sbb     dword [esp + 0ch], 0
+
+        rdtsc
+        sub     eax, [esp + 08h]
+        sbb     edx, [esp + 0ch]
+        add     [ecx], eax
+        adc     [ecx + 4], edx
+common_no_overhead:
+        add     esp, 4 + 4 + 8
+
+        ; restore volatile registers.
+        pop     ecx
+        popfd
+        pop     edx
+        pop     eax
+        ret
+
+;;
+; Data esi points to while we're calibrating.
+struc CALIBDATA
+    .OverheadLo resd 1
+    .OverheadHi resd 1
+    .ProfiledLo resd 1
+    .ProfiledHi resd 1
+    .EnterTSLo  resd 1
+    .EnterTSHi  resd 1
+    .MinLo      resd 1
+    .MinHi      resd 1
+endstruc
+
+
+
+align 16
+;;
+; Do necessary calibrations.
+;
+calibrate:
+        ; prolog
+        push    ebp
+        mov     ebp, esp
+        pushfd
+        pushad
+        sub     esp, CALIBDATA_size
+        mov     esi, esp                ; esi points to the CALIBDATA
+
+        ;
+        ; Indicate that we have finished calibrating.
+        ;
+        mov     eax, 1
+        xchg    dword [g_fCalibrated], eax
+
+        ;
+        ; The outer loop - find the right adjustment.
+        ;
+        mov     ebx, 200h               ; loop counter.
+calib_outer_loop:
+
+        ;
+        ; The inner loop - calls the function number of times to establish a
+        ;                  good minimum value
+        ;
+        mov     ecx, 200h
+        mov     dword [esi + CALIBDATA.MinLo], 0ffffffffh
+        mov     dword [esi + CALIBDATA.MinHi], 07fffffffh
+calib_inner_loop:
+
+        ; zero the overhead and profiled times.
+        xor     eax, eax
+        mov     [esi + CALIBDATA.OverheadLo], eax
+        mov     [esi + CALIBDATA.OverheadHi], eax
+        mov     [esi + CALIBDATA.ProfiledLo], eax
+        mov     [esi + CALIBDATA.ProfiledHi], eax
+        call    calib_nullproc
+
+        ; subtract the overhead
+        mov     eax, [esi + CALIBDATA.ProfiledLo]
+        mov     edx, [esi + CALIBDATA.ProfiledHi]
+        sub     eax, [esi + CALIBDATA.OverheadLo]
+        sbb     edx, [esi + CALIBDATA.OverheadHi]
+
+        ; update the minimum value.
+        test    edx, 080000000h
+        jnz near calib_outer_dec        ; if negative, just simplify and shortcut
+        cmp     edx, [esi + CALIBDATA.MinHi]
+        jg      calib_inner_next
+        jl      calib_inner_update_minimum
+        cmp     eax, [esi + CALIBDATA.MinLo]
+        jge     calib_inner_next
+calib_inner_update_minimum:
+        mov     [esi + CALIBDATA.MinLo], eax
+        mov     [esi + CALIBDATA.MinHi], edx
+calib_inner_next:
+        loop    calib_inner_loop
+
+        ; Is the minimum value acceptable?
+        test    dword [esi + CALIBDATA.MinHi], 80000000h
+        jnz     calib_outer_dec         ; simplify if negative.
+        cmp     dword [esi + CALIBDATA.MinHi], 0
+        jnz     calib_outer_inc         ; this shouldn't be possible
+        cmp     dword [esi + CALIBDATA.MinLo], 1fh
+        jbe     calib_outer_dec         ; too low - 2 ticks per pair is the minimum!
+        cmp     dword [esi + CALIBDATA.MinLo], 30h
+        jbe     calib_done              ; this is fine!
+calib_outer_inc:
+        inc     dword [g_OverheadAdj]
+        jmp     calib_outer_next
+calib_outer_dec:
+        cmp     dword [g_OverheadAdj], 1
+        je      calib_done
+        dec     dword [g_OverheadAdj]
+calib_outer_next:
+        dec     ebx
+        jnz     calib_outer_loop
+calib_done:
+
+        ; epilog
+        add     esp, CALIBDATA_size
+        popad
+        popfd
+        leave
+        ret
+
+
+
+
+;;
+; The calibration __penter - this must be identical to the real thing except for the KPRF call.
+align 16
+calib_penter:
+        ; This part must be identical
+        push    eax
+        push    edx
+        rdtsc
+        pushfd
+        push    ecx
+
+        ; store the entry
+        mov     [esi + CALIBDATA.EnterTSLo], eax
+        mov     [esi + CALIBDATA.EnterTSHi], edx
+
+        ; create the call frame
+        push    edx
+        push    eax
+        push    0
+        push    0
+
+        lea     eax, [esi + CALIBDATA.OverheadLo]
+        jmp     common_overhead
+
+
+;;
+; The calibration __pexit - this must be identical to the real thing except for the KPRF call.
+align 16
+calib_pexit:
+        ; This part must be identical
+        push    eax
+        push    edx
+        rdtsc
+        pushfd
+        push    ecx
+
+        ; update the time
+        push    eax
+        push    edx
+        sub     eax, [esi + CALIBDATA.EnterTSLo]
+        sbb     edx, [esi + CALIBDATA.EnterTSHi]
+        add     [esi + CALIBDATA.ProfiledLo], eax
+        adc     [esi + CALIBDATA.ProfiledHi], edx
+        pop     edx
+        pop     eax
+
+        ; create the call frame
+        push    edx
+        push    eax
+        push    0
+        push    0
+
+        lea     eax, [esi + CALIBDATA.EnterTSLo]
+        jmp     common_overhead
+
+
+;;
+; The 'function' we're profiling.
+; The general idea is that each pair should take something like 2-10 ticks.
+;
+; (Btw. If we don't use multiple pairs here, we end up with the wrong result.)
+align 16
+calib_nullproc:
+        call    calib_penter ;0
+        call    calib_pexit
+
+        call    calib_penter ;1
+        call    calib_pexit
+
+        call    calib_penter ;2
+        call    calib_pexit
+
+        call    calib_penter ;3
+        call    calib_pexit
+
+        call    calib_penter ;4
+        call    calib_pexit
+
+        call    calib_penter ;5
+        call    calib_pexit
+
+        call    calib_penter ;6
+        call    calib_pexit
+
+        call    calib_penter ;7
+        call    calib_pexit
+
+        call    calib_penter ;8
+        call    calib_pexit
+
+        call    calib_penter ;9
+        call    calib_pexit
+
+        call    calib_penter ;a
+        call    calib_pexit
+
+        call    calib_penter ;b
+        call    calib_pexit
+
+        call    calib_penter ;c
+        call    calib_pexit
+
+        call    calib_penter ;d
+        call    calib_pexit
+
+        call    calib_penter ;e
+        call    calib_pexit
+
+        call    calib_penter ;f
+        call    calib_pexit
+        ret
+
diff --git a/src/lib/kStuff/kProfiler2/tst.c b/src/lib/kStuff/kProfiler2/tst.c
new file mode 100644
index 0000000..f56204c
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/tst.c
@@ -0,0 +1,48 @@
+#include <stdio.h>

+

+#ifdef _MSC_VER

+void __cdecl _penter(void);

+void __cdecl _pexit(void);

+__declspec(naked) int  naked(void)

+{

+    __asm

+    {

+        call    _penter

+        call    _pexit

+        xor     eax, eax

+        ret

+    }

+}

+

+#endif

+

+int bar(void)

+{

+    unsigned i;

+    for (i = 0; i < 1000; i += 7)

+        i += i & 1;

+    return i;

+}

+

+int foo(void)

+{

+    unsigned i, rc = 0;

+    for (i = 0; i < 1000; i++)

+        rc += bar();

+#ifdef _MSC_VER

+    for (; i < 2000; i++)

+        rc += naked();

+#endif

+    return i;

+}

+

+int main()

+{

+    int rc;

+    printf("hello");

+    fflush(stdout);

+    rc = foo();

+    printf("world\n");

+    return rc;

+}

+

diff --git a/src/lib/kStuff/kProfiler2/tstlongjmp.c b/src/lib/kStuff/kProfiler2/tstlongjmp.c
new file mode 100644
index 0000000..d6e2b49
--- /dev/null
+++ b/src/lib/kStuff/kProfiler2/tstlongjmp.c
@@ -0,0 +1,62 @@
+

+#include <setjmp.h>

+#include <time.h>

+

+/* just try trick the compiler into not optimizing stuff by

+   making it "uncertain" which path to take. */

+int always_true(void)

+{

+    time_t t = time(NULL);

+    if (t == time(NULL))

+        return 1;

+    if (t != time(NULL))

+        return 1;

+    if (t == time(NULL))

+        return 1;

+    if (t != time(NULL))

+        return 1;

+    return 0;

+}

+

+jmp_buf g_JmpBuf;

+

+int onelevel(void)

+{

+    if (always_true())

+        longjmp(g_JmpBuf, 1);

+    return 0;

+}

+

+

+int twolevels_inner(void)

+{

+    if (always_true())

+        longjmp(g_JmpBuf, 1);

+    return 0;

+}

+

+int twolevels_outer(void)

+{

+    int rc;

+    always_true();

+    rc = twolevels_inner();

+    always_true();

+    return rc;

+}

+

+

+int main()

+{

+    int rc = 1;

+

+    /* first */

+    if (!setjmp(g_JmpBuf))

+        rc = onelevel();

+

+    /* second */

+    if (!setjmp(g_JmpBuf))

+        rc = twolevels_outer();

+

+    return rc != 1;

+}

+

diff --git a/src/lib/kStuff/kRdr/Makefile.kmk b/src/lib/kStuff/kRdr/Makefile.kmk
new file mode 100644
index 0000000..357acf6
--- /dev/null
+++ b/src/lib/kStuff/kRdr/Makefile.kmk
@@ -0,0 +1,48 @@
+# $Id: Makefile.kmk 29 2009-07-01 20:30:29Z bird $
+## @file
+# kRdr - The File Provider, sub-makefile.
+#
+
+#
+# Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+
+DEPTH ?= ..
+SUB_DEPTH = ..
+include $(PATH_KBUILD)/subheader.kmk
+
+#
+# kRdrStatic - The file provider module.
+#
+LIBRARIES += kRdrStatic
+kRdrStatic_TEMPLATE = kStuffLIB
+kRdrStatic_DEFS = KDBG_BUILDING
+kRdrStatic_SOURCES = \
+	kRdr.cpp \
+	kRdrFile.cpp \
+	kRdrBuffered.cpp
+
+# Generate the rules
+include $(PATH_KBUILD)/subfooter.kmk
+
diff --git a/src/lib/kStuff/kRdr/kRdr.cpp b/src/lib/kStuff/kRdr/kRdr.cpp
new file mode 100644
index 0000000..5952cb1
--- /dev/null
+++ b/src/lib/kStuff/kRdr/kRdr.cpp
@@ -0,0 +1,281 @@
+/* $Id: kRdr.cpp 29 2009-07-01 20:30:29Z bird $ */

+/** @file

+ * kRdr - The File Provider.

+ */

+

+/*

+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>

+ *

+ * Permission is hereby granted, free of charge, to any person

+ * obtaining a copy of this software and associated documentation

+ * files (the "Software"), to deal in the Software without

+ * restriction, including without limitation the rights to use,

+ * copy, modify, merge, publish, distribute, sublicense, and/or sell

+ * copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following

+ * conditions:

+ *

+ * The above copyright notice and this permission notice shall be

+ * included in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

+ * OTHER DEALINGS IN THE SOFTWARE.

+ */

+

+/*******************************************************************************

+*   Header Files                                                               *

+*******************************************************************************/

+#include "kRdrInternal.h"

+

+

+/*******************************************************************************

+*   Global Variables                                                           *

+*******************************************************************************/

+/** The list of file providers. */

+static PCKRDROPS g_pRdrHead = &g_kRdrFileOps;

+

+

+/**

+ * Adds a new file provider.

+ *

+ * @param   pAdd        The new file provider.

+ */

+KRDR_DECL(void) kRdrAddProvider(PKRDROPS pAdd)

+{

+    pAdd->pNext = g_pRdrHead;

+    g_pRdrHead = pAdd;

+}

+

+

+/**

+ * Tries to opens a file.

+ *

+ * @returns 0 on success, OS status code on failure.

+ * @param   ppRdr           Where to store the file provider instance.

+ * @param   pszFilename     The filename.

+ */

+KRDR_DECL(int) kRdrOpen(PPKRDR ppRdr, const char *pszFilename)

+{

+    int             rc = -1;

+    PCKRDROPS    pCur;

+    for (pCur = g_pRdrHead; pCur; pCur = pCur->pNext)

+    {

+        rc = pCur->pfnCreate(ppRdr, pszFilename);

+        if (!rc)

+            return 0;

+    }

+    return rc;

+}

+

+

+/**

+ * Closes the file.

+ *

+ * @returns 0 on success, OS specific error code on failure.

+ *          On failure, the file provider instance will be in an indeterminate state - don't touch it!

+ * @param   pRdr        The file provider instance.

+ */

+KRDR_DECL(int) kRdrClose(PKRDR pRdr)

+{

+    KRDR_VALIDATE(pRdr);

+    return pRdr->pOps->pfnDestroy(pRdr);

+}

+

+

+/** Read bits from the file.

+ *

+ * @returns 0 on success, OS specific error code on failure.

+ * @param   pRdr        The file provider instance.

+ * @param   pvBuf       Where to put the bits.

+ * @param   cb          The number of bytes to read.

+ * @param   off         Where to start reading.

+ */

+KRDR_DECL(int) kRdrRead(PKRDR pRdr, void *pvBuf, KSIZE cb, KFOFF off)

+{

+    KRDR_VALIDATE(pRdr);

+    return pRdr->pOps->pfnRead(pRdr, pvBuf, cb, off);

+}

+

+

+/** Map all the file bits into memory (read only).

+ *

+ * @returns 0 on success, OS specific error code on failure.

+ * @param   pRdr        The file provider instance.

+ * @param   ppvBits     Where to store the address of the mapping.

+ *                      The size can be obtained using pfnSize.

+ */

+KRDR_DECL(int) kRdrAllMap(PKRDR pRdr, const void **ppvBits)

+{

+    KRDR_VALIDATE(pRdr);

+    return pRdr->pOps->pfnAllMap(pRdr, ppvBits);

+}

+

+

+/** Unmap a file bits mapping obtained by KRDROPS::pfnAllMap.

+ *

+ * @returns 0 on success, OS specific error code on failure.

+ * @param   pRdr        The file provider instance.

+ * @param   pvBits      The mapping address.

+ */

+KRDR_DECL(int) kRdrAllUnmap(PKRDR pRdr, const void *pvBits)

+{

+    KRDR_VALIDATE(pRdr);

+    return pRdr->pOps->pfnAllUnmap(pRdr, pvBits);

+}

+

+

+/** Get the file size.

+ *

+ * @returns The file size. Returns -1 on failure.

+ * @param   pRdr        The file provider instance.

+ */

+KRDR_DECL(KFOFF) kRdrSize(PKRDR pRdr)

+{

+    KRDR_VALIDATE(pRdr);

+    return pRdr->pOps->pfnSize(pRdr);

+}

+

+

+/** Get the file pointer offset.

+ *

+ * @returns The file pointer offset. Returns -1 on failure.

+ * @param   pRdr        The file provider instance.

+ */

+KRDR_DECL(KFOFF) kRdrTell(PKRDR pRdr)

+{

+    KRDR_VALIDATE(pRdr);

+    return pRdr->pOps->pfnTell(pRdr);

+}

+

+

+/** Get the file name.

+ *

+ * @returns The file name. Returns NULL on failure.

+ * @param   pRdr        The file provider instance.

+ */

+KRDR_DECL(const char *) kRdrName(PKRDR pRdr)

+{

+    KRDR_VALIDATE_EX(pRdr, NULL);

+    return pRdr->pOps->pfnName(pRdr);

+}

+

+

+/** Get the native file handle if possible.

+ *

+ * @returns The native file handle. Returns -1 if not available.

+ * @param   pRdr        The file provider instance.

+ */

+KRDR_DECL(KIPTR) kRdrNativeFH(PKRDR pRdr)

+{

+    KRDR_VALIDATE_EX(pRdr, -1);

+    return pRdr->pOps->pfnNativeFH(pRdr);

+}

+

+

+/**

+ * Gets the page size used when mapping sections of the file.

+ *

+ * @returns The page size.

+ * @param   pRdr        The file provider instance.

+ */

+KRDR_DECL(KSIZE) kRdrPageSize(PKRDR pRdr)

+{

+    KRDR_VALIDATE_EX(pRdr, 0x10000);

+    return pRdr->pOps->pfnPageSize(pRdr);

+}

+

+

+/**

+ * Maps the segments of a image into memory.

+ *

+ * The file reader will be using the RVA member of each segment to figure out where

+ * it goes relative to the image base address.

+ *

+ * @returns 0 on success, OS specific error code on failure.

+ * @param   pRdr        The file provider instance.

+ * @param   ppvBase     On input when fFixed is set, this contains the base address of the mapping.

+ *                      On output this contains the base of the image mapping.

+ * @param   cSegments   The number of segments in the array pointed to by paSegments.

+ * @param   paSegments  The segments thats going to be mapped.

+ * @param   fFixed      If set, the address at *ppvBase should be the base address of the mapping.

+ */

+KRDR_DECL(int) kRdrMap(PKRDR pRdr, void **ppvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fFixed)

+{

+    KRDR_VALIDATE(pRdr);

+    return pRdr->pOps->pfnMap(pRdr, ppvBase, cSegments, paSegments, fFixed);

+}

+

+

+/**

+ * Reloads dirty pages in mapped image.

+ *

+ * @returns 0 on success, OS specific error code on failure.

+ * @param   pRdr        The file provider instance.

+ * @param   pvBase      The base address of the image mapping.

+ * @param   cSegments   The number of segments in the array pointed to by paSegments.

+ * @param   paSegments  The segments thats going to be mapped.

+ */

+KRDR_DECL(int) kRdrRefresh(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments)

+{

+    KRDR_VALIDATE(pRdr);

+    return pRdr->pOps->pfnRefresh(pRdr, pvBase, cSegments, paSegments);

+}

+

+

+/**

+ * Protects or unprotects an image mapping.

+ *

+ * This is typically used for getting write access to read or execute only

+ * pages while applying fixups.

+ *

+ * @returns 0 on success, OS specific error code on failure.

+ * @param   pRdr        The file provider instance.

+ * @param   pvBase      The base address of the image mapping.

+ * @param   cSegments   The number of segments in the array pointed to by paSegments.

+ * @param   paSegments  The segments thats going to be mapped.

+ * @param   fUnprotectOrProtect     When set the all mapped segments are made writable.

+ *                                  When clean the segment protection is restored.

+ */

+KRDR_DECL(int) kRdrProtect(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fUnprotectOrProtect)

+{

+    KRDR_VALIDATE(pRdr);

+    return pRdr->pOps->pfnProtect(pRdr, pvBase, cSegments, paSegments, fUnprotectOrProtect);

+}

+

+

+/**

+ * Unmaps a image mapping.

+ *

+ * @returns 0 on success, OS specific error code on failure.

+ * @param   pRdr        The file provider instance.

+ * @param   pvBase      The base address of the image mapping.

+ * @param   cSegments   The number of segments in the array pointed to by paSegments.

+ * @param   paSegments  The segments thats going to be mapped.

+ */

+KRDR_DECL(int) kRdrUnmap(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments)

+{

+    KRDR_VALIDATE(pRdr);

+    return pRdr->pOps->pfnUnmap(pRdr, pvBase, cSegments, paSegments);

+}

+

+

+/**

+ * We're done reading from the file but would like to keep file mappings.

+ *

+ * If the OS support closing the file handle while the file is mapped,

+ * the reader should do so.

+ *

+ * @param   pRdr        The file provider instance.

+ */

+KRDR_DECL(void) kRdrDone(PKRDR pRdr)

+{

+    KRDR_VALIDATE_VOID(pRdr);

+    pRdr->pOps->pfnDone(pRdr);

+}

+

diff --git a/src/lib/kStuff/kRdr/kRdrBuffered.cpp b/src/lib/kStuff/kRdr/kRdrBuffered.cpp
new file mode 100644
index 0000000..fc589cd
--- /dev/null
+++ b/src/lib/kStuff/kRdr/kRdrBuffered.cpp
@@ -0,0 +1,750 @@
+/* $Id: kRdrBuffered.cpp 79 2016-07-27 14:25:09Z bird $ */
+/** @file
+ * kRdrBuffered - Buffered File Provider.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "kRdrInternal.h"
+#include <k/kHlpAlloc.h>
+#include <k/kHlpString.h>
+
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * The buffered file provier instance.
+ * This is just a wrapper around another file provider.
+ */
+typedef struct KRDRBUF
+{
+    /** The file reader vtable. */
+    KRDR                Core;
+    /** The actual file provider that we're wrapping. */
+    PKRDR               pRdr;
+    /** The current file offset. */
+    KFOFF               offFile;
+    /** The file size. */
+    KFOFF               cbFile;
+    /** The offset of the buffer. */
+    KFOFF               offBuf;
+    /** The offset of the end of the buffer. */
+    KFOFF               offBufEnd;
+    /** The number of valid buffer bytes. */
+    KSIZE               cbBufValid;
+    /** The size of the buffer. */
+    KSIZE               cbBuf;
+    /** The buffer. */
+    KU8                *pbBuf;
+    /** Whether the pRdr instance should be closed together with us or not. */
+    KBOOL               fCloseIt;
+    /** Set if the buffer has been messed up by kRdrBufLineQ. */
+    KBOOL               fTainedByLineQ;
+} KRDRBUF, *PKRDRBUF;
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static void     krdrBufDone(PKRDR pRdr);
+static int      krdrBufUnmap(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments);
+static int      krdrBufProtect(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fUnprotectOrProtect);
+static int      krdrBufRefresh(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments);
+static int      krdrBufMap(PKRDR pRdr, void **ppvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fFixed);
+static KSIZE    krdrBufPageSize(PKRDR pRdr);
+static const char *krdrBufName(PKRDR pRdr);
+static KIPTR    krdrBufNativeFH(PKRDR pRdr);
+static KFOFF    krdrBufTell(PKRDR pRdr);
+static KFOFF    krdrBufSize(PKRDR pRdr);
+static int      krdrBufAllUnmap(PKRDR pRdr, const void *pvBits);
+static int      krdrBufAllMap(PKRDR pRdr, const void **ppvBits);
+static int      krdrBufRead(PKRDR pRdr, void *pvBuf, KSIZE cb, KFOFF off);
+static int      krdrBufDestroy(PKRDR pRdr);
+static int      krdrBufCreate(PPKRDR ppRdr, const char *pszFilename);
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** Native file provider operations.
+ *
+ * @remark  This is not in the file provider list as its intended for wrapping
+ *          other kRdr instances.
+ */
+static const KRDROPS g_krdrBufOps =
+{
+    "Buffered kRdr",
+    NULL,
+    krdrBufCreate,
+    krdrBufDestroy,
+    krdrBufRead,
+    krdrBufAllMap,
+    krdrBufAllUnmap,
+    krdrBufSize,
+    krdrBufTell,
+    krdrBufName,
+    krdrBufNativeFH,
+    krdrBufPageSize,
+    krdrBufMap,
+    krdrBufRefresh,
+    krdrBufProtect,
+    krdrBufUnmap,
+    krdrBufDone,
+    42
+};
+
+
+/** @copydoc KRDROPS::pfnDone */
+static void     krdrBufDone(PKRDR pRdr)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    return pThis->pRdr->pOps->pfnDone(pThis->pRdr);
+}
+
+
+/** @copydoc KRDROPS::pfnUnmap */
+static int      krdrBufUnmap(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    return pThis->pRdr->pOps->pfnUnmap(pThis->pRdr, pvBase, cSegments, paSegments);
+}
+
+
+/** @copydoc KRDROPS::pfnProtect */
+static int      krdrBufProtect(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fUnprotectOrProtect)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    return pThis->pRdr->pOps->pfnProtect(pThis->pRdr, pvBase, cSegments, paSegments, fUnprotectOrProtect);
+}
+
+
+/** @copydoc KRDROPS::pfnRefresh */
+static int krdrBufRefresh(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    return pThis->pRdr->pOps->pfnRefresh(pThis->pRdr, pvBase, cSegments, paSegments);
+}
+
+
+/** @copydoc KRDROPS::pfnMap */
+static int krdrBufMap(PKRDR pRdr, void **ppvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fFixed)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    return pThis->pRdr->pOps->pfnMap(pThis->pRdr, ppvBase, cSegments, paSegments, fFixed);
+}
+
+
+/** @copydoc KRDROPS::pfnPageSize */
+static KSIZE krdrBufPageSize(PKRDR pRdr)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    return pThis->pRdr->pOps->pfnPageSize(pThis->pRdr);
+}
+
+
+/** @copydoc KRDROPS::pfnName */
+static const char *krdrBufName(PKRDR pRdr)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    return pThis->pRdr->pOps->pfnName(pThis->pRdr);
+}
+
+
+/** @copydoc KRDROPS::pfnNativeFH */
+static KIPTR krdrBufNativeFH(PKRDR pRdr)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    return pThis->pRdr->pOps->pfnNativeFH(pThis->pRdr);
+}
+
+
+/** @copydoc KRDROPS::pfnTell */
+static KFOFF krdrBufTell(PKRDR pRdr)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    return pThis->offFile;
+}
+
+
+/** @copydoc KRDROPS::pfnSize */
+static KFOFF krdrBufSize(PKRDR pRdr)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    return pThis->cbFile;
+}
+
+
+/** @copydoc KRDROPS::pfnAllUnmap */
+static int krdrBufAllUnmap(PKRDR pRdr, const void *pvBits)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    return pThis->pRdr->pOps->pfnAllUnmap(pThis->pRdr, pvBits);
+}
+
+
+/** @copydoc KRDROPS::pfnAllMap */
+static int krdrBufAllMap(PKRDR pRdr, const void **ppvBits)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    return pThis->pRdr->pOps->pfnAllMap(pThis->pRdr, ppvBits);
+}
+
+
+/**
+ * Fills the buffer with file bits starting at the specified offset.
+ *
+ * @returns 0 on success, pfnRead error code on failure.
+ * @param   pThis   The instance.
+ * @param   off     Where to start reading.
+ */
+static int krdrBufFillBuffer(PKRDRBUF pThis, KFOFF off)
+{
+    kRdrAssert(off < pThis->cbFile);
+
+    /* Reposition the buffer if it's past the end of the file so that
+       we maximize its usability. We leave one unused byte at the end
+       of the buffer so kRdrBufLineQ can terminate its string properly.
+       Of course, this might end up re-reading a lot of stuff for no
+       future gain, but whatever... */
+    kRdrAssert(pThis->cbBuf <= pThis->cbFile + 1);
+    KFOFF cbLeft = pThis->cbFile - off;
+    KSIZE cbRead = pThis->cbBuf;
+    if ((KSSIZE)cbRead - 1 >= cbLeft)
+    {
+        cbRead--;
+        off = pThis->cbFile - cbRead;
+    }
+    int rc = pThis->pRdr->pOps->pfnRead(pThis->pRdr, pThis->pbBuf, cbRead, off);
+    if (!rc)
+    {
+        pThis->offBuf = off;
+        pThis->offBufEnd = off + cbRead;
+        pThis->cbBufValid = cbRead;
+    }
+    else
+    {
+        pThis->offBuf = pThis->offBufEnd = 0;
+        pThis->cbBufValid = 0;
+    }
+    pThis->fTainedByLineQ = K_FALSE;
+    return rc;
+}
+
+
+/** @copydoc KRDROPS::pfnRead */
+static int krdrBufRead(PKRDR pRdr, void *pvBuf, KSIZE cb, KFOFF off)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+
+    /*
+     * We need to validate and update the file offset before
+     * we start making partial reads from the buffer and stuff.
+     */
+    KFOFF offEnd = off + cb;
+    if (    off >= pThis->cbFile
+        ||  offEnd > pThis->cbFile
+        ||  offEnd < off)
+        return KERR_OUT_OF_RANGE; /* includes EOF. */
+    pThis->offFile = offEnd;
+    if (!cb)
+        return 0;
+
+    /*
+     * Scratch the buffer if kRdrBufLineQ has tained it.
+     */
+    if (pThis->fTainedByLineQ)
+    {
+        pThis->offBuf = pThis->offBufEnd = 0;
+        pThis->cbBufValid = 0;
+    }
+
+    /*
+     * Is any part of the request in the buffer?
+     *
+     * We will currently ignore buffer hits in the middle of the
+     * request because it's annoying to implement and it's
+     * questionable whether it'll benefit much performance wise.
+     */
+    if (pThis->cbBufValid > 0)
+    {
+        if (off >= pThis->offBuf)
+        {
+            if (off < pThis->offBufEnd)
+            {
+                /* head (or all) of the request is in the buffer. */
+                KSIZE cbMaxChunk = (KSIZE)(pThis->offBufEnd - off);
+                KSIZE cbChunk = K_MIN(cb, cbMaxChunk);
+                kHlpMemCopy(pvBuf, &pThis->pbBuf[off - pThis->offBuf], cbChunk);
+                if (cbChunk == cb)
+                    return 0;
+
+                cb -= cbChunk;
+                pvBuf = (KU8 *)pvBuf + cbChunk;
+                off += cbChunk;
+            }
+        }
+        else if (   offEnd > pThis->offBuf
+                 && offEnd <= pThis->offBufEnd)
+        {
+            /* the end of the request is in the buffer. */
+            KSIZE cbChunk = (KSIZE)(pThis->offBufEnd - (offEnd));
+            kHlpMemCopy((KU8 *)pvBuf + (pThis->offBuf - off), pThis->pbBuf, cbChunk);
+            kRdrAssert(cbChunk < cb);
+            cb -= cbChunk;
+            offEnd -= cbChunk;
+        }
+    }
+
+    /*
+     * If the buffer is larger than the read request, read a full buffer
+     * starting at the requested offset. Otherwise perform an unbuffered
+     * read.
+     */
+    if (pThis->cbBuf > cb)
+    {
+        int rc = krdrBufFillBuffer(pThis, off);
+        if (rc)
+            return rc;
+        if (pThis->offBuf == off)
+            kHlpMemCopy(pvBuf, pThis->pbBuf, cb);
+        else
+        {
+            kRdrAssert(off > pThis->offBuf);
+            kRdrAssert(off + cb <= pThis->offBufEnd);
+            kHlpMemCopy(pvBuf, pThis->pbBuf + (off - pThis->offBuf), cb);
+        }
+    }
+    else
+    {
+        int rc = pThis->pRdr->pOps->pfnRead(pThis->pRdr, pvBuf, cb, off);
+        if (rc)
+            return rc;
+    }
+    return 0;
+}
+
+
+/** @copydoc KRDROPS::pfnDestroy */
+static int krdrBufDestroy(PKRDR pRdr)
+{
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+
+    /* Close the kRdr instance that we're wrapping. */
+    if (pThis->fCloseIt)
+    {
+        int rc = pThis->pRdr->pOps->pfnDestroy(pThis->pRdr);
+        if (rc)
+            return rc;
+        pThis->fCloseIt = K_FALSE;
+        pThis->pRdr = NULL;
+    }
+
+    kHlpFree(pThis->pbBuf);
+    pThis->pbBuf = NULL;
+    kHlpFree(pRdr);
+    return 0;
+}
+
+
+/** @copydoc KRDROPS::pfnCreate */
+static int krdrBufCreate(PPKRDR ppRdr, const char *pszFilename)
+{
+    K_NOREF(ppRdr);
+    K_NOREF(pszFilename);
+    return KERR_NOT_IMPLEMENTED;
+}
+
+
+/**
+ * Worker for kRdrBufOpen and kRdrBufWrap.
+ *
+ * It's essentially kRdrBufWrap without error checking.
+ *
+ * @returns 0 on success, one of the kErrors status code on failure.
+ * @param   ppRdr           Where to store the new file provider instance.
+ * @param   pRdrWrapped     The file provider instance to buffer.
+ * @param   fCloseIt        Whether it the pRdrWrapped instance should be closed
+ *                          when the new instance is closed.
+ */
+static int krdrBufWrapIt(PPKRDR ppRdr, PKRDR pRdrWrapped, KBOOL fCloseIt)
+{
+    PKRDRBUF pThis = (PKRDRBUF)kHlpAlloc(sizeof(*pThis));
+    if (pThis)
+    {
+        pThis->Core.u32Magic = KRDR_MAGIC;
+        pThis->Core.pOps = &g_krdrBufOps;
+        pThis->pRdr = pRdrWrapped;
+        pThis->offFile = pRdrWrapped->pOps->pfnTell(pRdrWrapped);
+        pThis->cbFile = pRdrWrapped->pOps->pfnSize(pRdrWrapped);
+        pThis->offBuf = pThis->offBufEnd = 0;
+        pThis->cbBufValid = 0;
+        pThis->fCloseIt = fCloseIt;
+        pThis->fTainedByLineQ = K_FALSE;
+        if (pThis->cbFile < 128*1024)
+            pThis->cbBuf = (KSIZE)pThis->cbFile + 1; /* need space for the kRdrBufLineQ terminator. */
+        else
+            pThis->cbBuf = 64*1024;
+        pThis->pbBuf = (KU8 *)kHlpAlloc(pThis->cbBuf);
+        if (pThis->pbBuf)
+        {
+            *ppRdr = &pThis->Core;
+            return 0;
+        }
+
+        pThis->Core.u32Magic = 0;
+        kHlpFree(pThis);
+    }
+    return KERR_NO_MEMORY;
+}
+
+
+/**
+ * Opens a file provider with a buffered wrapper.
+ *
+ * @returns 0 on success, KERR_* on failure.
+ * @param   ppRdr       Where to store the buffered file reader instance on success.
+ * @param   pszFilename The name of the file that should be opened.
+ */
+KRDR_DECL(int) kRdrBufOpen(PPKRDR ppRdr, const char *pszFilename)
+{
+    kRdrAssertPtrReturn(ppRdr, KERR_INVALID_POINTER);
+    *ppRdr = NULL;
+
+    PKRDR pRdrWrapped;
+    int rc = kRdrOpen(&pRdrWrapped, pszFilename);
+    if (!rc)
+    {
+        rc = krdrBufWrapIt(ppRdr, pRdrWrapped, K_TRUE);
+        if (rc)
+            kRdrClose(pRdrWrapped);
+    }
+    return rc;
+}
+
+
+/**
+ * Creates a buffered file provider instance for an existing one.
+ *
+ * @returns 0 on success, KERR_* on failure.
+ * @param   ppRdr           Where to store the new file provider pointer.
+ * @param   pRdr            The file provider instance to wrap.
+ * @param   fCLoseIt        Whether it the wrapped reader should be automatically
+ *                          closed when the wrapper closes.
+ */
+KRDR_DECL(int) kRdrBufWrap(PPKRDR ppRdr, PKRDR pRdr, KBOOL fCloseIt)
+{
+    KRDR_VALIDATE(pRdr);
+    return krdrBufWrapIt(ppRdr, pRdr, fCloseIt);
+}
+
+
+/**
+ * Checks whether the file provider instance is of the buffered type or not.
+ *
+ * @returns K_TRUE if it is, otherwise K_FALSE.
+ * @param   pRdr            The file provider instance to check.
+ */
+KRDR_DECL(KBOOL) kRdrBufIsBuffered(PKRDR pRdr)
+{
+    KRDR_VALIDATE_EX(pRdr, K_FALSE);
+    return pRdr->pOps == &g_krdrBufOps;
+}
+
+
+/**
+ * Reads a line from a buffered file provider.
+ *
+ * The trailing '\n' or '\r\n' is stripped.
+ *
+ * @returns 0 on success. KERR_* on failure.
+ * @retval  KRDR_ERR_LINE_TOO_LONG if the line is too long to fit in the passed in buffer.
+ * @retval  KRDR_ERR_NOT_BUFFERED_RDR if pRdr isn't a buffered reader.
+ * @param   pRdr        The buffered file reader.
+ * @param   pszLine     Where to store the line.
+ * @param   cbLine      The size of the the line buffer.
+ */
+KRDR_DECL(int) kRdrBufLine(PKRDR pRdr, char *pszLine, KSIZE cbLine)
+{
+    return kRdrBufLineEx(pRdr, pszLine, &cbLine);
+}
+
+
+/**
+ * Reads a line from a buffered file provider.
+ *
+ * The trailing '\n' or '\r\n' is stripped.
+ *
+ * @returns 0 on success. KERR_* on failure.
+ * @retval  KRDR_ERR_LINE_TOO_LONG if the line is too long to fit in the passed in buffer.
+ * @retval  KRDR_ERR_NOT_BUFFERED_RDR if pRdr isn't a buffered reader.
+ * @param   pRdr        The buffered file reader.
+ * @param   pszLine     Where to store the line.
+ * @param   pcbLine     The size of the the line buffer on input, the length of the
+ *                      returned line on output.
+ */
+KRDR_DECL(int) kRdrBufLineEx(PKRDR pRdr, char *pszLine, KSIZE *pcbLine)
+{
+    /*
+     * Validate input.
+     */
+    kRdrAssertPtrReturn(pcbLine, KERR_INVALID_POINTER);
+    KSIZE cbLeft = *pcbLine;
+    *pcbLine = 0;
+    kRdrAssertReturn(cbLeft > 0, KERR_INVALID_PARAMETER);
+    KRDR_VALIDATE(pRdr);
+    kRdrAssertReturn(pRdr->pOps != &g_krdrBufOps, KRDR_ERR_NOT_BUFFERED_RDR);
+    kRdrAssertPtrReturn(pszLine, KERR_INVALID_POINTER);
+
+    /* check for EOF */
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    if (pThis->offFile >= pThis->cbFile)
+    {
+        kRdrAssert(pThis->offFile == pThis->cbFile);
+        *pszLine = '\0';
+        *pcbLine = 0;
+        return KERR_EOF;
+    }
+
+    /*
+     * Scratch the buffer if kRdrBufLineQ has tained it.
+     */
+    if (pThis->fTainedByLineQ)
+    {
+        pThis->offBuf = pThis->offBufEnd = 0;
+        pThis->cbBufValid = 0;
+    }
+
+    /*
+     * Buffered read loop.
+     *
+     * The overflow logic is a bit fishy wrt to overflowing at an "\r\n"
+     * that arrives at a buffer boundrary. The current policy is to try
+     * our best to not to fail with overflow in the EOL sequence or EOF.
+     * If it's the end of the buffer, it will not be refilled just to
+     * check for this because that's too much work.
+     */
+    cbLeft--; /* reserve space for the terminator. */
+    char *pszOut = pszLine;
+    for (;;)
+    {
+        /*
+         * Do we need to (re-)fill the buffer or does it contain something
+         * that we can work on already?
+         */
+        if (    !pThis->cbBufValid
+            ||  pThis->offFile >= pThis->offBufEnd
+            ||  pThis->offFile < pThis->offBuf)
+        {
+            int rc = krdrBufFillBuffer(pThis, pThis->offFile);
+            if (rc)
+            {
+                *pszOut = '\0';
+                return rc;
+            }
+        }
+
+        /*
+         * Parse the buffer looking for the EOL indicator.
+         */
+        kRdrAssert(pThis->offFile >= pThis->offBuf && pThis->offFile < pThis->offBufEnd);
+        kRdrAssert(sizeof(char) == sizeof(*pThis->pbBuf));
+        const char * const pszStart = (const char *)&pThis->pbBuf[pThis->offFile - pThis->offBuf];
+        const char * const pszEnd   = (const char *)&pThis->pbBuf[pThis->cbBufValid];
+        const char *psz = pszStart;
+        while (psz < pszEnd)
+        {
+            const char ch = *psz;
+            if (ch == '\n')
+            {
+                /* found the EOL, update file position and line length. */
+                pThis->offFile += psz - pszStart + 1;
+                *pcbLine += psz - pszStart;
+
+                /* terminate the string, checking for "\r\n" first. */
+                if (    *pcbLine
+                    &&  pszOut[-1] == '\r')
+                {
+                    *pcbLine -= 1;
+                    pszOut--;
+                }
+                *pszOut = '\0';
+                return 0;
+            }
+            if (!cbLeft)
+            {
+                /* the line is *probably* too long. */
+                pThis->offFile += psz - pszStart;
+                *pcbLine += psz - pszStart;
+                *pszOut = '\0';
+
+                /* The only possible case where the line actually isn't too long
+                   is if we're at a "\r\n" sequence. We will re-fill the buffer
+                   if necessary to check for the '\n' as it's not that much work. */
+                if (    ch == '\r'
+                    &&  pThis->offFile + 2 <= pThis->cbFile)
+                {
+                    if (psz + 1 >= pszEnd)
+                    {
+                        int rc = krdrBufFillBuffer(pThis, pThis->offFile);
+                        if (rc)
+                        {
+                            *pszOut = '\0';
+                            return rc;
+                        }
+                    }
+                    psz = (const char *)&pThis->pbBuf[pThis->offFile - pThis->offBuf];
+                    kRdrAssert(*psz == '\r');
+                    if (psz[1] == '\n')
+                    {
+                        *pcbLine -= 1;
+                        pszOut[-1] = '\0';
+                        pThis->offFile += 2;
+                        return 0;
+                    }
+                }
+                return KRDR_ERR_LINE_TOO_LONG;
+            }
+
+            /* copy and advance */
+            *pszOut++ = ch;
+            cbLeft--;
+            psz++;
+        }
+
+        /* advance past the buffer and check for EOF. */
+        *pcbLine += pszEnd - pszStart;
+        pThis->offFile = pThis->offBufEnd;
+        if (pThis->offFile >= pThis->cbFile)
+        {
+            kRdrAssert(pThis->offFile == pThis->cbFile);
+            *pszOut = '\0';
+            return 0;
+        }
+    }
+}
+
+
+/**
+ * Worker for kRdrBufLineQ that searches the current buffer for EOL or EOF.
+ *
+ * When a EOF marker is found
+ *
+ *
+ * @returns NULL if EOL/EOF isn't found the buffer.
+ * @param   pThis   The buffered reader instance.
+ */
+static const char * krdrBufLineQWorker(PKRDRBUF pThis)
+{
+    kRdrAssert(pThis->offFile >= pThis->offBuf && pThis->offFile < pThis->offBufEnd);
+
+    /*
+     * Search the buffer.
+     */
+    kRdrAssert(sizeof(char) == sizeof(*pThis->pbBuf));
+    const char * const pszStart = (const char *)&pThis->pbBuf[pThis->offFile - pThis->offBuf];
+    const char * const pszEnd   = (const char *)&pThis->pbBuf[pThis->cbBufValid];
+    char *psz = (char *)pszStart;
+    while (psz < pszEnd)
+    {
+        char ch = *psz;
+        if (ch == '\n')
+        {
+            pThis->offFile += psz - pszStart;
+            pThis->fTainedByLineQ = K_TRUE;
+            *psz = '\0';
+            if (    psz > pszStart
+                &&  psz[-1] == '\r')
+                *--psz = '\0';
+            return pszStart;
+        }
+        psz++;
+    }
+
+    /*
+     * Check for EOF. There must be room for a terminator char here.
+     */
+    if (    pThis->offBufEnd >= pThis->cbFile
+        &&  (pThis->offBufEnd - pThis->offBuf) < (KSSIZE)pThis->cbBuf)
+    {
+        pThis->offFile = pThis->cbFile;
+        pThis->pbBuf[pThis->cbBufValid] = '\0';
+        return pszStart;
+    }
+
+    return NULL;
+}
+
+
+/**
+ * Get the pointer to the next next line in the buffer.
+ * The returned line is zero terminated.
+ *
+ * @returns A pointer to the line on success. This becomes invalid
+ *          upon the next call to this kRdr instance.
+ * @returns NULL on EOF, read error of if the line was too long.
+ * @param   pRdr        The buffered file reader.
+ */
+KRDR_DECL(const char *) kRdrBufLineQ(PKRDR pRdr)
+{
+    /*
+     * Validate input.
+     */
+    KRDR_VALIDATE_EX(pRdr, NULL);
+    kRdrAssertReturn(pRdr->pOps != &g_krdrBufOps, NULL);
+
+    /* check for EOF */
+    PKRDRBUF pThis = (PKRDRBUF)pRdr;
+    if (pThis->offFile >= pThis->cbFile)
+    {
+        kRdrAssert(pThis->offFile == pThis->cbFile);
+        return NULL;
+    }
+
+    /*
+     * Search the current buffer if possible
+     */
+    if (    pThis->cbBufValid
+        &&  pThis->offFile >= pThis->offBuf
+        &&  pThis->offFile < pThis->offBufEnd)
+    {
+        const char *psz = krdrBufLineQWorker(pThis);
+        if (psz)
+            return psz;
+    }
+
+    /*
+     * Fill the buffer in an optimal way and look for the EOL/EOF (again).
+     */
+    int rc = krdrBufFillBuffer(pThis, pThis->offFile);
+    if (rc)
+        return NULL;
+    return krdrBufLineQWorker(pThis);
+}
+
diff --git a/src/lib/kStuff/kRdr/kRdrFile.cpp b/src/lib/kStuff/kRdr/kRdrFile.cpp
new file mode 100644
index 0000000..27dd803
--- /dev/null
+++ b/src/lib/kStuff/kRdr/kRdrFile.cpp
@@ -0,0 +1,1308 @@
+/* $Id: kRdrFile.cpp 81 2016-08-18 22:10:38Z bird $ */

+/** @file

+ * kRdrFile - The Native File Provider

+ */

+

+/*

+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>

+ *

+ * Permission is hereby granted, free of charge, to any person

+ * obtaining a copy of this software and associated documentation

+ * files (the "Software"), to deal in the Software without

+ * restriction, including without limitation the rights to use,

+ * copy, modify, merge, publish, distribute, sublicense, and/or sell

+ * copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following

+ * conditions:

+ *

+ * The above copyright notice and this permission notice shall be

+ * included in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

+ * OTHER DEALINGS IN THE SOFTWARE.

+ */

+

+/*******************************************************************************

+*   Header Files                                                               *

+*******************************************************************************/

+#include "kRdrInternal.h"

+#include <k/kHlpAlloc.h>

+#include <k/kHlpString.h>

+#include <k/kErrors.h>

+

+#if K_OS == K_OS_DARWIN \

+ || K_OS == K_OS_FREEBSD \

+ || K_OS == K_OS_LINUX \

+ || K_OS == K_OS_NETBSD \

+ || K_OS == K_OS_OPENBSD \

+ || K_OS == K_OS_SOLARIS

+# include <k/kHlpSys.h>

+# include <sys/fcntl.h>

+# include <sys/mman.h>

+# include <unistd.h>

+

+#elif K_OS == K_OS_OS2

+# define INCL_ERRORS

+# define INCL_BASE

+# include <os2.h>

+

+#elif K_OS == K_OS_WINDOWS

+# define WIN32_NO_STATUS

+# include <Windows.h>

+# include <ntsecapi.h>

+# include <ntstatus.h>

+

+# ifdef __cplusplus

+  extern "C" {

+# endif

+

+  /** @todo find a non-conflicting header with NTSTATUS, NTAPI, ++ */

+  typedef LONG NTSTATUS;

+  #define NT_SUCCESS(x) ((x)>=0)

+

+  typedef struct _OBJECT_ATTRIBUTES

+  {

+      ULONG   Length;

+      HANDLE  RootDirectory;

+      PUNICODE_STRING ObjectName;

+      ULONG   Attributes;

+      PVOID   SecurityDescriptor;

+      PVOID   SecurityQualityOfService;

+  } OBJECT_ATTRIBUTES, *POBJECT_ATTRIBUTES;

+

+  typedef enum _SECTION_INHERIT

+  {

+      ViewShare = 1,

+      ViewUnmap = 2

+  } SECTION_INHERIT;

+

+# define NTOSAPI __declspec(dllimport)

+# define NtCurrentProcess() GetCurrentProcess()

+

+# ifndef MEM_DOS_LIM

+#  define MEM_DOS_LIM 0x40000000UL

+# endif

+

+  NTOSAPI

+  NTSTATUS

+  NTAPI

+  NtCreateSection(

+      OUT PHANDLE SectionHandle,

+      IN ACCESS_MASK DesiredAccess,

+      IN POBJECT_ATTRIBUTES ObjectAttributes OPTIONAL,

+      IN PLARGE_INTEGER SectionSize OPTIONAL,

+      IN ULONG Protect,

+      IN ULONG Attributes,

+      IN HANDLE FileHandle OPTIONAL

+  );

+

+  NTOSAPI

+  NTSTATUS

+  NTAPI

+  NtMapViewOfSection(

+      IN HANDLE SectionHandle,

+      IN HANDLE ProcessHandle,

+      IN OUT PVOID *BaseAddress,

+      IN ULONG ZeroBits,

+      IN ULONG CommitSize,

+      IN OUT PLARGE_INTEGER SectionOffset OPTIONAL,

+      IN OUT PSIZE_T ViewSize,

+      IN SECTION_INHERIT InheritDisposition,

+      IN ULONG AllocationType,

+      IN ULONG Protect

+  );

+

+  NTOSAPI

+  NTSTATUS

+  NTAPI

+  NtUnmapViewOfSection(

+      IN HANDLE ProcessHandle,

+      IN PVOID BaseAddress

+  );

+

+  NTOSAPI

+  NTSTATUS

+  NTAPI

+  NtClose(

+      IN HANDLE Handle

+  );

+

+  NTOSAPI

+  NTSTATUS

+  NTAPI

+  ZwProtectVirtualMemory(

+      IN HANDLE ProcessHandle,

+      IN OUT PVOID *BaseAddress,

+      IN OUT PSIZE_T ProtectSize,

+      IN ULONG NewProtect,

+      OUT PULONG OldProtect

+  );

+# define NtProtectVirtualMemory ZwProtectVirtualMemory

+

+  NTOSAPI

+  NTSTATUS

+  NTAPI

+  NtAllocateVirtualMemory(

+      IN HANDLE ProcessHandle,

+      IN OUT PVOID *BaseAddress,

+      IN ULONG ZeroBits,

+      IN OUT PSIZE_T AllocationSize,

+      IN ULONG AllocationType,

+      IN ULONG Protect

+  );

+

+  NTOSAPI

+  NTSTATUS

+  NTAPI

+  NtFreeVirtualMemory(

+      IN HANDLE ProcessHandle,

+      IN OUT PVOID *BaseAddress,

+      IN OUT PSIZE_T FreeSize,

+      IN ULONG FreeType

+  );

+

+# ifdef __cplusplus

+  }

+# endif

+

+#else

+# error "port me"

+#endif

+

+

+/*******************************************************************************

+*   Structures and Typedefs                                                    *

+*******************************************************************************/

+/**

+ * Prepared stuff.

+ */

+typedef struct KRDRFILEPREP

+{

+    /** The address of the prepared region. */

+    void           *pv;

+    /** The size of the prepared region. */

+    KSIZE           cb;

+#if K_OS == K_OS_WINDOWS

+    /** Handle to the section created to map the file. */

+    HANDLE          hSection;

+#endif

+} KRDRFILEPREP, *PKRDRFILEPREP;

+

+/**

+ * The file provier instance for native files.

+ */

+typedef struct KRDRFILE

+{

+    /** The file reader vtable. */

+    KRDR                Core;

+    /** The file handle. */

+#if K_OS == K_OS_DARWIN \

+ || K_OS == K_OS_LINUX \

+ || K_OS == K_OS_NETBSD \

+ || K_OS == K_OS_OPENBSD \

+ || K_OS == K_OS_SOLARIS

+    int                 File;

+#elif K_OS == K_OS_OS2

+    HFILE               File;

+#elif K_OS == K_OS_WINDOWS

+    HANDLE              File;

+#else

+# error "Port me!"

+#endif

+    /** The current file offset. */

+    KFOFF               off;

+    /** The file size. */

+    KFOFF               cb;

+    /** Array where we stuff the mapping area data. */

+    KRDRFILEPREP        aPreps[4];

+    /** The number of current preps. */

+    KU32                cPreps;

+    /** Number of mapping references. */

+    KI32                cMappings;

+    /** The memory mapping. */

+    void               *pvMapping;

+    /** The filename. */

+    char                szFilename[1];

+} KRDRFILE, *PKRDRFILE;

+

+

+/*******************************************************************************

+*   Internal Functions                                                         *

+*******************************************************************************/

+static void     krdrFileDone(PKRDR pRdr);

+static int      krdrFileUnmap(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments);

+static int      krdrFileGenericUnmap(PKRDR pRdr, PKRDRFILEPREP pPrep, KU32 cSegments, PCKLDRSEG paSegments);

+static int      krdrFileProtect(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fUnprotectOrProtect);

+static int      krdrFileGenericProtect(PKRDR pRdr, PKRDRFILEPREP pPrep, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fUnprotectOrProtect);

+static int      krdrFileRefresh(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments);

+static int      krdrFileGenericRefresh(PKRDR pRdr, PKRDRFILEPREP pPrep, KU32 cSegments, PCKLDRSEG paSegments);

+static int      krdrFileMap(PKRDR pRdr, void **ppvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fFixed);

+static int      krdrFileGenericMap(PKRDR pRdr, PKRDRFILEPREP pPrep, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fFixed);

+static KSIZE   krdrFilePageSize(PKRDR pRdr);

+static const char *krdrFileName(PKRDR pRdr);

+static KIPTR    krdrFileNativeFH(PKRDR pRdr);

+static KFOFF    krdrFileTell(PKRDR pRdr);

+static KFOFF    krdrFileSize(PKRDR pRdr);

+static int      krdrFileAllUnmap(PKRDR pRdr, const void *pvBits);

+static int      krdrFileAllMap(PKRDR pRdr, const void **ppvBits);

+static int      krdrFileRead(PKRDR pRdr, void *pvBuf, KSIZE cb, KFOFF off);

+static int      krdrFileDestroy(PKRDR pRdr);

+static int      krdrFileCreate(PPKRDR ppRdr, const char *pszFilename);

+

+

+/*******************************************************************************

+*   Global Variables                                                           *

+*******************************************************************************/

+/** Native file provider operations. */

+const KRDROPS g_kRdrFileOps =

+{

+    "native file",

+    NULL,

+    krdrFileCreate,

+    krdrFileDestroy,

+    krdrFileRead,

+    krdrFileAllMap,

+    krdrFileAllUnmap,

+    krdrFileSize,

+    krdrFileTell,

+    krdrFileName,

+    krdrFileNativeFH,

+    krdrFilePageSize,

+    krdrFileMap,

+    krdrFileRefresh,

+    krdrFileProtect,

+    krdrFileUnmap,

+    krdrFileDone,

+    42

+};

+

+

+#if K_OS == K_OS_WINDOWS

+/**

+ * Converts a kLdr segment protection to NT protection for a mapping.

+ *

+ * @returns Nt page protection.

+ * @param   enmProt     kLdr protection.

+ */

+static ULONG krdrFileGetNtMapProt(KPROT enmProt)

+{

+    switch (enmProt)

+    {

+        case KPROT_NOACCESS:             return PAGE_NOACCESS;

+        case KPROT_READONLY:             return PAGE_READONLY;

+        case KPROT_READWRITE:            return PAGE_READWRITE;

+        case KPROT_WRITECOPY:            return PAGE_WRITECOPY;

+        case KPROT_EXECUTE:              return PAGE_EXECUTE;

+        case KPROT_EXECUTE_READ:         return PAGE_EXECUTE_READ;

+        case KPROT_EXECUTE_READWRITE:    return PAGE_EXECUTE_READWRITE;

+        case KPROT_EXECUTE_WRITECOPY:    return PAGE_EXECUTE_WRITECOPY;

+        default:                            return ~(ULONG)0;

+    }

+}

+

+

+/**

+ * Converts a kLdr segment protection to NT protection for a allocation.

+ *

+ * @returns Nt page protection.

+ * @param   enmProt     kLdr protection.

+ */

+static ULONG krdrFileGetNtAllocProt(KPROT enmProt)

+{

+    switch (enmProt)

+    {

+        case KPROT_NOACCESS:             return PAGE_NOACCESS;

+        case KPROT_READONLY:             return PAGE_READONLY;

+        case KPROT_WRITECOPY:

+        case KPROT_READWRITE:            return PAGE_READWRITE;

+        case KPROT_EXECUTE:              return PAGE_EXECUTE;

+        case KPROT_EXECUTE_READ:         return PAGE_EXECUTE_READ;

+        case KPROT_EXECUTE_WRITECOPY:

+        case KPROT_EXECUTE_READWRITE:    return PAGE_EXECUTE_READWRITE;

+        default:                            return ~(ULONG)0;

+    }

+}

+#endif

+

+

+/** @copydoc KRDROPS::pfnDone */

+static void     krdrFileDone(PKRDR pRdr)

+{

+}

+

+

+/**

+ * Finds a prepared mapping region.

+ *

+ * @returns Pointer to the aPrep entry.

+ * @param   pFile   The instance data.

+ * @param   pv      The base of the region.

+ */

+static PKRDRFILEPREP krdrFileFindPrepExact(PKRDRFILE pFile, void *pv)

+{

+    KI32 i = pFile->cPreps;

+    while (i-- > 0)

+        if (pFile->aPreps[i].pv == pv)

+            return &pFile->aPreps[i];

+    return NULL;

+}

+

+

+/** @copydoc KRDROPS::pfnUnmap */

+static int      krdrFileUnmap(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments)

+{

+    PKRDRFILE        pRdrFile = (PKRDRFILE)pRdr;

+    PKRDRFILEPREP       pPrep = krdrFileFindPrepExact(pRdrFile, pvBase);

+    int                 rc;

+    if (!pPrep)

+        return KERR_INVALID_PARAMETER;

+

+#if K_OS == K_OS_WINDOWS

+    if (pPrep->hSection != NULL)

+    {

+        /** @todo implement me. */

+        return -1;

+    }

+#endif

+

+    rc = krdrFileGenericUnmap(pRdr, pPrep, cSegments, paSegments);

+

+    /* remove the mapping data on success. */

+    if (!rc)

+    {

+        pRdrFile->cPreps--;

+        if (pPrep != &pRdrFile->aPreps[pRdrFile->cPreps])

+            *pPrep = pRdrFile->aPreps[pRdrFile->cPreps];

+    }

+    return rc;

+}

+

+

+/** Generic implementation of krdrFileUnmap. */

+static int krdrFileGenericUnmap(PKRDR pRdr, PKRDRFILEPREP pPrep, KU32 cSegments, PCKLDRSEG paSegments)

+{

+    krdrFileGenericProtect(pRdr, pPrep, cSegments, paSegments, 1 /* unprotect */);

+    return kHlpPageFree(pPrep->pv, pPrep->cb);

+}

+

+

+/** @copydoc KRDROPS::pfnProtect */

+static int krdrFileProtect(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fUnprotectOrProtect)

+{

+    PKRDRFILE        pRdrFile = (PKRDRFILE)pRdr;

+    PKRDRFILEPREP    pPrep = krdrFileFindPrepExact(pRdrFile, pvBase);

+    if (!pPrep)

+        return KERR_INVALID_PARAMETER;

+

+#if K_OS == K_OS_WINDOWS

+    if (pPrep->hSection != NULL)

+    {

+        /** @todo implement me. */

+        return -1;

+    }

+#endif

+

+    return krdrFileGenericProtect(pRdr, pPrep, cSegments, paSegments, fUnprotectOrProtect);

+}

+

+

+/** Generic implementation of krdrFileProtect. */

+static int krdrFileGenericProtect(PKRDR pRdr, PKRDRFILEPREP pPrep, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fUnprotectOrProtect)

+{

+    KU32 i;

+

+    /*

+     * Iterate the segments and apply memory protection changes.

+     */

+    for (i = 0; i < cSegments; i++)

+    {

+        int rc;

+        void *pv;

+        KPROT enmProt;

+

+        if (paSegments[i].RVA == NIL_KLDRADDR)

+            continue;

+

+        /* calc new protection. */

+        enmProt = (KPROT)paSegments[i].enmProt; /** @todo drop cast */

+        if (fUnprotectOrProtect)

+        {

+            switch (enmProt)

+            {

+                case KPROT_NOACCESS:

+                case KPROT_READONLY:

+                case KPROT_READWRITE:

+                case KPROT_WRITECOPY:

+                    enmProt = KPROT_READWRITE;

+                    break;

+                case KPROT_EXECUTE:

+                case KPROT_EXECUTE_READ:

+                case KPROT_EXECUTE_READWRITE:

+                case KPROT_EXECUTE_WRITECOPY:

+                    enmProt = KPROT_EXECUTE_READWRITE;

+                    break;

+                default:

+                    kRdrAssert(!"bad enmProt");

+                    return -1;

+            }

+        }

+        else

+        {

+            /* copy on write -> normal write. */

+            if (enmProt == KPROT_EXECUTE_WRITECOPY)

+                enmProt = KPROT_EXECUTE_READWRITE;

+            else if (enmProt == KPROT_WRITECOPY)

+                enmProt = KPROT_READWRITE;

+        }

+

+        pv = (KU8 *)pPrep->pv + paSegments[i].RVA;

+

+        rc = kHlpPageProtect(pv, paSegments[i].cbMapped, enmProt);

+        if (rc)

+            break;

+    }

+

+    return 0;

+}

+

+

+/** @copydoc KRDROPS::pfnRefresh */

+static int      krdrFileRefresh(PKRDR pRdr, void *pvBase, KU32 cSegments, PCKLDRSEG paSegments)

+{

+    PKRDRFILE        pRdrFile = (PKRDRFILE)pRdr;

+    PKRDRFILEPREP    pPrep = krdrFileFindPrepExact(pRdrFile, pvBase);

+    if (!pPrep)

+        return KERR_INVALID_PARAMETER;

+

+#if K_OS == K_OS_WINDOWS

+    if (pPrep->hSection != NULL)

+    {

+        /** @todo implement me. */

+        return -1;

+    }

+#endif

+

+    return krdrFileGenericRefresh(pRdr, pPrep, cSegments, paSegments);

+}

+

+

+/** Generic implementation of krdrFileRefresh. */

+static int      krdrFileGenericRefresh(PKRDR pRdr, PKRDRFILEPREP pPrep, KU32 cSegments, PCKLDRSEG paSegments)

+{

+    int rc;

+    int rc2;

+    KU32 i;

+

+    /*

+     * Make everything writable again.

+     */

+    rc = krdrFileGenericProtect(pRdr, pPrep, cSegments, paSegments, 1 /* unprotect */);

+    if (rc)

+    {

+        krdrFileGenericProtect(pRdr, pPrep, cSegments, paSegments, 0 /* protect */);

+        return rc;

+    }

+

+    /*

+     * Clear everything.

+     */

+    /** @todo only zero the areas not covered by raw file bits. */

+    kHlpMemSet(pPrep->pv, 0, pPrep->cb);

+

+    /*

+     * Reload all the segments.

+     * We could possibly skip some segments, but we currently have

+     * no generic way of figuring out which at the moment.

+     */

+    for (i = 0; i < cSegments; i++)

+    {

+        void *pv;

+

+        if (    paSegments[i].RVA == NIL_KLDRADDR

+            ||  paSegments[i].cbFile <= 0)

+            continue;

+

+        pv = (KU8 *)pPrep->pv + paSegments[i].RVA;

+        rc = pRdr->pOps->pfnRead(pRdr, pv, paSegments[i].cbFile, paSegments[i].offFile);

+        if (rc)

+            break;

+    }

+

+    /*

+     * Protect the bits again.

+     */

+    rc2 = krdrFileGenericProtect(pRdr, pPrep, cSegments, paSegments, 0 /* protect */);

+    if (rc2 && rc)

+        rc = rc2;

+

+    return rc;

+}

+

+

+/** @copydoc KRDROPS::pfnMap */

+static int      krdrFileMap(PKRDR pRdr, void **ppvBase, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fFixed)

+{

+    PKRDRFILE       pRdrFile = (PKRDRFILE)pRdr;

+    PKRDRFILEPREP   pPrep = &pRdrFile->aPreps[pRdrFile->cPreps];

+    KLDRSIZE        cbTotal;

+    const KSIZE     cbPage = pRdr->pOps->pfnPageSize(pRdr);

+    int             rc;

+    KU32            i;

+

+    if (pRdrFile->cPreps >= K_ELEMENTS(pRdrFile->aPreps))

+        return KRDR_ERR_TOO_MANY_MAPPINGS;

+

+    /*

+     * Calc the total mapping space needed.

+     */

+    cbTotal = 0;

+    for (i = 0; i < cSegments; i++)

+    {

+        KLDRSIZE uRVASegmentEnd;

+        if (paSegments[i].RVA == NIL_KLDRADDR)

+            continue;

+        uRVASegmentEnd = paSegments[i].RVA + paSegments[i].cbMapped;

+        if (cbTotal < uRVASegmentEnd)

+            cbTotal = uRVASegmentEnd;

+    }

+    pPrep->cb = (KSIZE)cbTotal;

+    if (pPrep->cb != cbTotal)

+        return KLDR_ERR_ADDRESS_OVERFLOW;

+    pPrep->cb = (pPrep->cb + (cbPage - 1)) & ~(cbPage- 1);

+

+#if K_OS == K_OS_DARWIN \

+ || K_OS == K_OS_FREEBSD \

+ || K_OS == K_OS_LINUX \

+ || K_OS == K_OS_NETBSD \

+ || K_OS == K_OS_OPENBSD \

+ || K_OS == K_OS_SOLARIS

+    /** @todo */

+

+#elif K_OS == K_OS_WINDOWS

+    /*

+     * The NT memory mapped file API sucks in a lot of ways. Unless you're actually

+     * trying to map a PE image and the kernel can parse the file for it self, the

+     * API just isn't up to scratch.

+     *

+     * Problems:

+     *      1. Reserving memory for the views is risky because you can't reserve and

+     *         map into the reserved space. So, other threads might grab the memory

+     *         before we get to it.

+     *      2. The page aligning of file offsets makes it impossible to map most

+     *         executable images since these are commonly sector aligned.

+     *      3. When mapping a read+execute file, its not possible to create section

+     *         larger than the file since the section size is bound to the data file

+     *         size. This wouldn't have been such a problem if it was possible to

+     *         map views beyond the section restriction, i.e. have a file size and

+     *         view size.

+     *      4. Only x86 can map views at page granularity it seems, and that only

+     *         using an undocument flag. The default granularity is 64KB.

+     *      5. There is more crappyness here...

+     *

+     * So, first we'll have to check if we can the file using the crappy NT APIs.

+     * Chances are we can't.

+     */

+    for (i = 0; i < cSegments; i++)

+    {

+        if (paSegments[i].RVA == NIL_KLDRADDR)

+            continue;

+

+        /* The file backing of the segments must be page aligned. */

+        if (    paSegments[i].cbFile > 0

+            &&  paSegments[i].offFile & (cbPage - 1))

+            break;

+

+        /* Only page alignment gaps between the file size and the mapping size. */

+        if (    paSegments[i].cbFile > 0

+            &&  (paSegments[i].cbFile & ~(cbPage - 1)) != (paSegments[i].cbMapped & ~(cbPage - 1)) )

+            break;

+

+        /* The mapping addresses of the segments must be page aligned.

+         * Non-x86 will probably require 64KB alignment here. */

+        if (paSegments[i].RVA & (cbPage - 1))

+            break;

+

+        /* If we do have to allocate the segment it's RVA must be 64KB aligned. */

+        if (    paSegments[i].cbFile > 0

+            &&  (paSegments[i].RVA & 0xffff))

+            break;

+    }

+    /** @todo if this is a PE image, we might just try a SEC_IMAGE mapping. It'll work if the host and image machines matches. */

+    if (i == cSegments)

+    {

+        /* WOW! it may work out! Incredible! */

+        SIZE_T          ViewSize;

+        LARGE_INTEGER   SectionOffset;

+        LARGE_INTEGER   MaxiumSize;

+        NTSTATUS        Status;

+        PVOID           pv;

+

+        MaxiumSize.QuadPart = pRdr->pOps->pfnSize(pRdr);

+        if (MaxiumSize.QuadPart > (LONGLONG)cbTotal)

+            MaxiumSize.QuadPart = cbTotal;

+

+        Status = NtCreateSection(&pPrep->hSection,

+                                 SECTION_MAP_EXECUTE | SECTION_MAP_READ,    /* desired access */

+                                 NULL,                                      /* object attributes */

+                                 &MaxiumSize,

+                                 PAGE_EXECUTE_WRITECOPY,                    /* page attributes */

+                                 SEC_COMMIT,                                /* section attributes */

+                                 pRdrFile->File);

+        if (!NT_SUCCESS(Status))

+            return (int)Status;

+

+        /*

+         * Determin the base address.

+         */

+        if (fFixed)

+            pPrep->pv = *ppvBase;

+        else

+        {

+            pv = NULL;

+            ViewSize = (KSIZE)cbTotal;

+

+            Status = NtAllocateVirtualMemory(NtCurrentProcess(),

+                                             &pv,

+                                             0,                             /* ZeroBits */

+                                             &ViewSize,

+                                             MEM_RESERVE,

+                                             PAGE_READONLY);

+            if (NT_SUCCESS(Status))

+            {

+                pPrep->pv = *ppvBase = pv;

+                ViewSize = 0;

+                Status = NtFreeVirtualMemory(NtCurrentProcess(), &pv, &ViewSize, MEM_RELEASE);

+            }

+            if (!NT_SUCCESS(Status))

+            {

+                NtClose(pPrep->hSection);

+                return Status;

+            }

+        }

+

+        /*

+         * Map the segments.

+         */

+        for (i = 0; i < cSegments; i++)

+        {

+            ULONG fPageProt;

+

+            if (paSegments[i].RVA == NIL_KLDRADDR)

+                continue;

+

+            pv = (KU8 *)pPrep->pv + paSegments[i].RVA;

+            if (paSegments[i].cbFile > 0)

+            {

+                SectionOffset.QuadPart = paSegments[i].offFile;

+                ViewSize = paSegments[i].cbFile;

+                fPageProt = krdrFileGetNtMapProt(paSegments[i].enmProt);

+                /* STATUS_MAPPED_ALIGNMENT

+                   STATUS_CONFLICTING_ADDRESSES

+                   STATUS_INVALID_VIEW_SIZE */

+                Status = NtMapViewOfSection(pPrep->hSection, NtCurrentProcess(),

+                                            &pv,

+                                            0,                                  /* ZeroBits */

+                                            0,                                  /* CommitSize */

+                                            &SectionOffset,                     /* SectionOffset */

+                                            &ViewSize,

+                                            ViewUnmap,

+                                            MEM_DOS_LIM,                        /* AllocationType */

+                                            fPageProt);

+                /* do we have to zero anything? */

+                if (    NT_SUCCESS(Status)

+                    &&  0/*later*/)

+                {

+                    /*ULONG OldPageProt = 0;

+                      NtProtectVirtualMemory(NtCurrentProcess(), &pv, &ViewSize, , */

+                }

+            }

+            else

+            {

+                ViewSize = paSegments[i].cbMapped;

+                fPageProt = krdrFileGetNtAllocProt(paSegments[i].enmProt);

+                Status = NtAllocateVirtualMemory(NtCurrentProcess(),

+                                                 &pv,

+                                                 0,                             /* ZeroBits */

+                                                 &ViewSize,

+                                                 MEM_COMMIT,

+                                                 fPageProt);

+            }

+            if (!NT_SUCCESS(Status))

+                break;

+        }

+

+        /*

+         * On success, commit the mapping and return.

+         */

+        if (NT_SUCCESS(Status))

+        {

+            pRdrFile->cPreps++;

+            return 0;

+        }

+

+        /* bail out and fall back on the generic code. */

+        while (i-- > 0)

+        {

+            PVOID pv;

+

+            if (paSegments[i].RVA == NIL_KLDRADDR)

+                continue;

+

+            pv = (KU8 *)pPrep->pv + paSegments[i].RVA;

+            if (paSegments[i].cbFile > 0)

+                NtUnmapViewOfSection(NtCurrentProcess(), pv);

+            else

+                NtFreeVirtualMemory(NtCurrentProcess(), &pv, NULL, MEM_RELEASE);

+        }

+        NtClose(pPrep->hSection);

+    }

+    /* else: fall back to the generic code */

+    pPrep->hSection = NULL;

+#endif

+

+    /*

+     * Use the generic map emulation.

+     */

+    pPrep->pv = fFixed ? *ppvBase : NULL;

+    rc = krdrFileGenericMap(pRdr, pPrep, cSegments, paSegments, fFixed);

+    if (!rc)

+    {

+        *ppvBase = pPrep->pv;

+        pRdrFile->cPreps++;

+    }

+

+    return rc;

+}

+

+

+/** Generic implementation of krdrFileMap. */

+static int  krdrFileGenericMap(PKRDR pRdr, PKRDRFILEPREP pPrep, KU32 cSegments, PCKLDRSEG paSegments, KBOOL fFixed)

+{

+    int rc;

+    KU32 i;

+

+    /*

+     * Generic mapping code using kHlpPageAlloc(), kHlpPageFree() and kHlpPageProtect().

+     */

+    rc = kHlpPageAlloc(&pPrep->pv, pPrep->cb, KPROT_EXECUTE_READWRITE, fFixed);

+    if (rc)

+        return rc;

+

+    /*

+     * Load the data.

+     */

+    for (i = 0; i < cSegments; i++)

+    {

+        void *pv;

+

+        if (    paSegments[i].RVA == NIL_KLDRADDR

+            ||  paSegments[i].cbFile <= 0)

+            continue;

+

+        pv = (KU8 *)pPrep->pv + paSegments[i].RVA;

+        rc = pRdr->pOps->pfnRead(pRdr, pv, paSegments[i].cbFile, paSegments[i].offFile);

+        if (rc)

+            break;

+    }

+

+    /*

+     * Set segment protection.

+     */

+    if (!rc)

+    {

+        rc = krdrFileGenericProtect(pRdr, pPrep, cSegments, paSegments, 0 /* protect */);

+        if (!rc)

+            return 0;

+        krdrFileGenericProtect(pRdr, pPrep, cSegments, paSegments, 1 /* unprotect */);

+    }

+

+    /* bailout */

+    kHlpPageFree(pPrep->pv, pPrep->cb);

+    return rc;

+}

+

+

+/** @copydoc KRDROPS::pfnPageSize */

+static KSIZE   krdrFilePageSize(PKRDR pRdr)

+{

+#if K_OS == K_OS_DARWIN

+    return 0x1000; /** @todo find some header somewhere... */

+

+#elif K_OS == K_OS_LINUX

+    return 0x1000; /** @todo find some header somewhere... */

+

+#elif K_OS == K_OS_OS2

+    /* The page size on OS/2 wont change anytime soon. :-) */

+    return 0x1000;

+

+#elif K_OS == K_OS_WINDOWS

+    SYSTEM_INFO SysInfo;

+    GetSystemInfo(&SysInfo);

+    return SysInfo.dwPageSize;

+    /*return SysInfo.dwAllocationGranularity;*/

+#else

+# error "port me"

+#endif

+}

+

+

+/** @copydoc KRDROPS::pfnName */

+static const char *krdrFileName(PKRDR pRdr)

+{

+    PKRDRFILE pRdrFile = (PKRDRFILE)pRdr;

+    return &pRdrFile->szFilename[0];

+}

+

+

+static KIPTR krdrFileNativeFH(PKRDR pRdr)

+{

+    PKRDRFILE pRdrFile = (PKRDRFILE)pRdr;

+#if K_OS == K_OS_DARWIN \

+ || K_OS == K_OS_FREEBSD \

+ || K_OS == K_OS_LINUX \

+ || K_OS == K_OS_NETBSD \

+ || K_OS == K_OS_OPENBSD \

+ || K_OS == K_OS_OS2 \

+ || K_OS == K_OS_SOLARIS \

+ || K_OS == K_OS_WINDOWS

+    return (KIPTR)pRdrFile->File;

+#else

+# error "port me"

+#endif

+}

+

+

+/** @copydoc KRDROPS::pfnTell */

+static KFOFF krdrFileTell(PKRDR pRdr)

+{

+    PKRDRFILE pRdrFile = (PKRDRFILE)pRdr;

+

+    /*

+     * If the offset is undefined, try figure out what it is.

+     */

+    if (pRdrFile->off == -1)

+    {

+#if K_OS == K_OS_DARWIN \

+ || K_OS == K_OS_FREEBSD \

+ || K_OS == K_OS_LINUX \

+ || K_OS == K_OS_NETBSD \

+ || K_OS == K_OS_OPENBSD \

+ || K_OS == K_OS_SOLARIS

+        pRdrFile->off = kHlpSys_lseek(pRdrFile->File, SEEK_CUR, 0);

+        if (pRdrFile->off < 0)

+            pRdrFile->off = -1;

+

+#elif K_OS == K_OS_OS2

+        ULONG ulNew;

+        APIRET rc = DosSetFilePtr(pRdrFile->File, 0, FILE_CURRENT, &ulNew);

+        if (rc)

+            return -1;

+        pRdrFile->off = ulNew;

+

+#elif K_OS == K_OS_WINDOWS

+        LONG offHigh = 0;

+        LONG offLow;

+        int rc;

+

+        SetLastError(0);

+        offLow = SetFilePointer(pRdrFile->File, 0, &offHigh, FILE_CURRENT);

+        rc = GetLastError();

+        if (rc)

+            return -1;

+        pRdrFile->off = ((KFOFF)offHigh << 32) | offLow;

+

+#else

+# error "port me."

+#endif

+    }

+    return pRdrFile->off;

+}

+

+

+/** @copydoc KRDROPS::pfnSize */

+static KFOFF krdrFileSize(PKRDR pRdr)

+{

+    PKRDRFILE pRdrFile = (PKRDRFILE)pRdr;

+    return pRdrFile->cb;

+}

+

+

+/** @copydoc KRDROPS::pfnAllUnmap */

+static int krdrFileAllUnmap(PKRDR pRdr, const void *pvBits)

+{

+    PKRDRFILE pRdrFile = (PKRDRFILE)pRdr;

+

+    /* check for underflow */

+    if (pRdrFile->cMappings <= 0)

+        return KERR_INVALID_PARAMETER;

+

+    /* decrement usage counter, free mapping if no longer in use. */

+    if (!--pRdrFile->cMappings)

+    {

+        kHlpFree(pRdrFile->pvMapping);

+        pRdrFile->pvMapping = NULL;

+    }

+

+    return 0;

+}

+

+

+/** @copydoc KRDROPS::pfnAllMap */

+static int krdrFileAllMap(PKRDR pRdr, const void **ppvBits)

+{

+    PKRDRFILE pRdrFile = (PKRDRFILE)pRdr;

+

+    /*

+     * Do we need to map it?

+     */

+    if (!pRdrFile->pvMapping)

+    {

+        int rc;

+        KFOFF cbFile = pRdrFile->Core.pOps->pfnSize(pRdr);

+        KSIZE cb = (KSIZE)cbFile;

+        if (cb != cbFile)

+            return KERR_NO_MEMORY;

+

+        pRdrFile->pvMapping = kHlpAlloc(cb);

+        if (!pRdrFile->pvMapping)

+            return KERR_NO_MEMORY;

+        rc = pRdrFile->Core.pOps->pfnRead(pRdr, pRdrFile->pvMapping, cb, 0);

+        if (rc)

+        {

+            kHlpFree(pRdrFile->pvMapping);

+            pRdrFile->pvMapping = NULL;

+            return rc;

+        }

+        pRdrFile->cMappings = 0;

+    }

+

+    *ppvBits = pRdrFile->pvMapping;

+    pRdrFile->cMappings++;

+    return 0;

+}

+

+

+/** @copydoc KRDROPS::pfnRead */

+static int krdrFileRead(PKRDR pRdr, void *pvBuf, KSIZE cb, KFOFF off)

+{

+    PKRDRFILE pRdrFile = (PKRDRFILE)pRdr;

+

+    /*

+     * Do a seek if needed.

+     */

+    if (pRdrFile->off != off)

+    {

+#if K_OS == K_OS_DARWIN \

+ || K_OS == K_OS_FREEBSD \

+ || K_OS == K_OS_LINUX \

+ || K_OS == K_OS_NETBSD \

+ || K_OS == K_OS_OPENBSD \

+ || K_OS == K_OS_SOLARIS

+        pRdrFile->off = kHlpSys_lseek(pRdrFile->File, SEEK_SET, off);

+        if (pRdrFile->off < 0)

+        {

+            int rc = (int)-pRdrFile->off;

+            pRdrFile->off = -1;

+            return -rc;

+        }

+

+#elif K_OS == K_OS_OS2

+        ULONG ulNew;

+        APIRET rc;

+

+        rc = DosSetFilePtr(pRdrFile->File, off, FILE_BEGIN, &ulNew);

+        if (rc)

+        {

+            pRdrFile->off = -1;

+            return rc;

+        }

+

+#elif K_OS == K_OS_WINDOWS

+        LONG offHigh;

+        LONG offLow;

+

+        offHigh = (LONG)(off >> 32);

+        offLow = SetFilePointer(pRdrFile->File, (LONG)off, &offHigh, FILE_BEGIN);

+        if (    offLow != (LONG)off

+            ||  offHigh != (LONG)(off >> 32))

+        {

+            int rc = GetLastError();

+            if (!rc)

+                rc = KERR_GENERAL_FAILURE;

+            pRdrFile->off = -1;

+            return rc;

+        }

+

+#else

+# error "port me."

+#endif

+    }

+

+    /*

+     * Do the read.

+     */

+#if K_OS == K_OS_DARWIN \

+ || K_OS == K_OS_FREEBSD \

+ || K_OS == K_OS_LINUX \

+ || K_OS == K_OS_NETBSD \

+ || K_OS == K_OS_OPENBSD \

+ || K_OS == K_OS_SOLARIS

+    {

+    KSSIZE cbRead;

+

+    cbRead = kHlpSys_read(pRdrFile->File, pvBuf, cb);

+    if (cbRead != cb)

+    {

+        pRdrFile->off = -1;

+        if (cbRead < 0)

+            return -cbRead;

+        return KERR_GENERAL_FAILURE;

+    }

+    }

+

+#elif K_OS == K_OS_OS2

+    {

+    ULONG cbRead = 0;

+    APIRET rc = DosRead(pRdrFile->File, pvBuf, cb, &cbRead);

+    if (rc)

+    {

+        pRdrFile->off = -1;

+        return rc;

+    }

+    if (cbRead != cb)

+    {

+        pRdrFile->off = -1;

+        return KERR_GENERAL_FAILURE;

+    }

+    }

+

+#elif K_OS == K_OS_WINDOWS

+    {

+    DWORD cbRead = 0;

+    if (!ReadFile(pRdrFile->File, pvBuf, cb, &cbRead, NULL))

+    {

+        int rc = GetLastError();

+        if (!rc)

+            rc = KERR_GENERAL_FAILURE;

+        pRdrFile->off = -1;

+        return rc;

+    }

+    if (cbRead != cb)

+    {

+        pRdrFile->off = -1;

+        return KERR_GENERAL_FAILURE;

+    }

+    }

+

+#else

+# error "port me."

+#endif

+

+    pRdrFile->off = off + cb;

+    return 0;

+}

+

+

+/** @copydoc KRDROPS::pfnDestroy */

+static int krdrFileDestroy(PKRDR pRdr)

+{

+    PKRDRFILE    pRdrFile = (PKRDRFILE)pRdr;

+    int          rc;

+

+#if K_OS == K_OS_DARWIN \

+ || K_OS == K_OS_FREEBSD \

+ || K_OS == K_OS_LINUX \

+ || K_OS == K_OS_NETBSD \

+ || K_OS == K_OS_OPENBSD \

+ || K_OS == K_OS_SOLARIS

+    rc = kHlpSys_close(pRdrFile->File);

+

+#elif K_OS == K_OS_OS2

+    rc = DosClose(pRdrFile->File);

+

+#elif K_OS == K_OS_WINDOWS

+    rc = 0;

+    if (!CloseHandle(pRdrFile->File))

+        rc = GetLastError();

+

+#else

+# error "port me"

+#endif

+

+    if (pRdrFile->pvMapping)

+    {

+        kHlpFree(pRdrFile->pvMapping);

+        pRdrFile->pvMapping = NULL;

+    }

+

+    kHlpFree(pRdr);

+    return rc;

+}

+

+

+/** @copydoc KRDROPS::pfnCreate */

+static int krdrFileCreate(PPKRDR ppRdr, const char *pszFilename)

+{

+    KSIZE       cchFilename;

+    PKRDRFILE   pRdrFile;

+

+    /*

+     * Open the file, determin its size and correct filename.

+     */

+#if K_OS == K_OS_DARWIN \

+ || K_OS == K_OS_FREEBSD \

+ || K_OS == K_OS_LINUX \

+ || K_OS == K_OS_NETBSD \

+ || K_OS == K_OS_OPENBSD \

+ || K_OS == K_OS_SOLARIS

+    int         File;

+    KFOFF       cb;

+    KFOFF       rc;

+    char        szFilename[1024];

+

+    cchFilename = kHlpStrLen(pszFilename);

+    if (cchFilename >= sizeof(szFilename))

+        return KERR_OUT_OF_RANGE;

+    kHlpMemCopy(szFilename, pszFilename, cchFilename + 1);

+    /** @todo normalize the filename. */

+

+# ifdef O_BINARY

+    File = kHlpSys_open(pszFilename, O_RDONLY | O_BINARY, 0);

+# else

+    File = kHlpSys_open(pszFilename, O_RDONLY, 0);

+# endif

+    if (File < 0)

+        return -File;

+

+    cb = kHlpSys_lseek(File, SEEK_END, 0);

+    rc = kHlpSys_lseek(File, SEEK_SET, 0);

+    if (    cb < 0

+        ||  rc < 0)

+    {

+        kHlpSys_close(File);

+        return cb < 0 ? -cb : -rc;

+    }

+

+#elif K_OS == K_OS_OS2

+    ULONG       ulAction = 0;

+    FILESTATUS3 Info;

+    APIRET      rc;

+    HFILE       File = 0;

+    KFOFF       cb;

+    char        szFilename[CCHMAXPATH];

+

+    if ((uintptr_t)pszFilename >= 0x20000000)

+    {

+        char *psz;

+        cchFilename = kHlpStrLen(szFilename);

+        psz = (char *)kHlpAllocA(cchFilename + 1);

+        kHlpMemCopy(psz, pszFilename, cchFilename + 1);

+        pszFilename = psz;

+    }

+    rc = DosOpen((PCSZ)pszFilename, &File, &ulAction, 0, FILE_NORMAL,

+                 OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW,

+                 OPEN_FLAGS_NOINHERIT | OPEN_SHARE_DENYWRITE | OPEN_ACCESS_READONLY | OPEN_FLAGS_RANDOMSEQUENTIAL,

+                 NULL);

+    if (rc)

+        return rc;

+

+    rc = DosQueryPathInfo((PCSZ)pszFilename, FIL_QUERYFULLNAME, szFilename, sizeof(szFilename));

+    if (rc)

+    {

+        DosClose(File);

+        return rc;

+    }

+

+    rc = DosQueryFileInfo(File, FIL_STANDARD, &Info, sizeof(Info));

+    if (rc)

+    {

+        DosClose(File);

+        return rc;

+    }

+    cb = Info.cbFile;

+

+#elif K_OS == K_OS_WINDOWS

+    SECURITY_ATTRIBUTES SecAttr;

+    DWORD               High;

+    DWORD               Low;

+    int                 rc;

+    HANDLE              File;

+    KFOFF            cb;

+    char                szFilename[MAX_PATH];

+

+    SecAttr.bInheritHandle = FALSE;

+    SecAttr.lpSecurityDescriptor = NULL;

+    SecAttr.nLength = 0;

+    File = CreateFile(pszFilename, GENERIC_READ | GENERIC_EXECUTE, FILE_SHARE_READ, &SecAttr, OPEN_EXISTING, 0, NULL);

+    if (File == INVALID_HANDLE_VALUE)

+        return GetLastError();

+

+    if (!GetFullPathName(pszFilename, sizeof(szFilename), szFilename, NULL))

+    {

+        rc = GetLastError();

+        CloseHandle(File);

+        return rc;

+    }

+

+    SetLastError(0);

+    Low = GetFileSize(File, &High);

+    rc = GetLastError();

+    if (rc)

+    {

+        CloseHandle(File);

+        return rc;

+    }

+    cb = ((KFOFF)High << 32) | Low;

+

+#else

+# error "port me"

+#endif

+

+

+    /*

+     * Allocate the reader instance.

+     */

+    cchFilename = kHlpStrLen(szFilename);

+    pRdrFile = (PKRDRFILE)kHlpAlloc(sizeof(*pRdrFile) + cchFilename);

+    if (!pRdrFile)

+    {

+#if K_OS == K_OS_DARWIN \

+ || K_OS == K_OS_FREEBSD \

+ || K_OS == K_OS_LINUX \

+ || K_OS == K_OS_NETBSD \

+ || K_OS == K_OS_OPENBSD \

+ || K_OS == K_OS_SOLARIS

+        kHlpSys_close(File);

+#elif K_OS == K_OS_OS2

+        DosClose(File);

+#elif K_OS == K_OS_WINDOWS

+        CloseHandle(File);

+#else

+# error "port me"

+#endif

+        return KERR_NO_MEMORY;

+    }

+

+    /*

+     * Initialize it and return successfully.

+     */

+    pRdrFile->Core.u32Magic = KRDR_MAGIC;

+    pRdrFile->Core.pOps = &g_kRdrFileOps;

+    pRdrFile->File = File;

+    pRdrFile->cb = cb;

+    pRdrFile->off = 0;

+    pRdrFile->cPreps = 0;

+    pRdrFile->cMappings = 0;

+    pRdrFile->pvMapping = NULL;

+    kHlpMemCopy(&pRdrFile->szFilename[0], szFilename, cchFilename + 1);

+

+    *ppRdr = &pRdrFile->Core;

+    return 0;

+}

+

diff --git a/src/lib/kStuff/kRdr/kRdrInternal.h b/src/lib/kStuff/kRdr/kRdrInternal.h
new file mode 100644
index 0000000..d8f67db
--- /dev/null
+++ b/src/lib/kStuff/kRdr/kRdrInternal.h
@@ -0,0 +1,122 @@
+/* $Id: kRdrInternal.h 29 2009-07-01 20:30:29Z bird $ */
+/** @file
+ * kRdr - Internal Header.
+ */
+
+/*
+ * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef ___kRdrInternal_h___
+#define ___kRdrInternal_h___
+
+#include <k/kHlpAssert.h>
+#include <k/kMagics.h>
+#include <k/kRdrAll.h>
+#include <k/kErrors.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @defgroup grp_kRdrInternal - Internals
+ * @internal
+ * @addtogroup grp_kRdr
+ * @{
+ */
+
+/** @def KRDR_STRICT
+ * If defined the kRdr assertions and other runtime checks will be enabled. */
+#ifdef K_ALL_STRICT
+# undef KRDR_STRICT
+# define KRDR_STRICT
+#endif
+
+/** @name Our Assert macros
+ * @{ */
+#ifdef KRDR_STRICT
+# define kRdrAssert(expr)                       kHlpAssert(expr)
+# define kRdrAssertReturn(expr, rcRet)          kHlpAssertReturn(expr, rcRet)
+# define kRdrAssertMsg(expr, msg)               kHlpAssertMsg(expr, msg)
+# define kRdrAssertMsgReturn(expr, msg, rcRet)  kHlpAssertMsgReturn(expr, msg, rcRet)
+#else   /* !KRDR_STRICT */
+# define kRdrAssert(expr)                       do { } while (0)
+# define kRdrAssertReturn(expr, rcRet)          do { if (!(expr)) return (rcRet); } while (0)
+# define kRdrAssertMsg(expr, msg)               do { } while (0)
+# define kRdrAssertMsgReturn(expr, msg, rcRet)  do { if (!(expr)) return (rcRet); } while (0)
+#endif  /* !KRDR_STRICT */
+
+#define kRdrAssertPtr(ptr)                      kRdrAssertMsg(K_VALID_PTR(ptr), ("%s = %p\n", #ptr, (ptr)))
+#define kRdrAssertPtrReturn(ptr, rcRet)         kRdrAssertMsgReturn(K_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)), (rcRet))
+#define kRdrAssertPtrNull(ptr)                  kRdrAssertMsg(!(ptr) || K_VALID_PTR(ptr), ("%s = %p\n", #ptr, (ptr)))
+#define kRdrAssertPtrNullReturn(ptr, rcRet)     kRdrAssertMsgReturn(!(ptr) || K_VALID_PTR(ptr), ("%s = %p -> %d\n", #ptr, (ptr), (rcRet)), (rcRet))
+#define kRdrAssertRC(rc)                        kRdrAssertMsg((rc) == 0, ("%s = %d\n", #rc, (rc)))
+#define kRdrAssertRCReturn(rc, rcRet)           kRdrAssertMsgReturn((rc) == 0, ("%s = %d -> %d\n", #rc, (rc), (rcRet)), (rcRet))
+#define kRdrAssertFailed()                      kRdrAssert(0)
+#define kRdrAssertFailedReturn(rcRet)           kRdrAssertReturn(0, (rcRet))
+#define kRdrAssertMsgFailed(msg)                kRdrAssertMsg(0, msg)
+#define kRdrAssertMsgFailedReturn(msg, rcRet)   kRdrAssertMsgReturn(0, msg, (rcRet))
+/** @} */
+
+/** Return / crash validation of a reader argument. */
+#define KRDR_VALIDATE_EX(pRdr, rc) \
+    do  { \
+        if (    (pRdr)->u32Magic != KRDR_MAGIC \
+            ||  (pRdr)->pOps == NULL \
+           )\
+        { \
+            return (rc); \
+        } \
+    } while (0)
+
+/** Return / crash validation of a reader argument. */
+#define KRDR_VALIDATE(pRdr) \
+    KRDR_VALIDATE_EX(pRdr, KERR_INVALID_PARAMETER)
+
+/** Return / crash validation of a reader argument. */
+#define KRDR_VALIDATE_VOID(pRdr) \
+    do  { \
+        if (    !K_VALID_PTR(pRdr) \
+            ||  (pRdr)->u32Magic != KRDR_MAGIC \
+            ||  (pRdr)->pOps == NULL \
+           )\
+        { \
+            return; \
+        } \
+    } while (0)
+
+
+/** @name Built-in Providers
+ * @{ */
+extern const KRDROPS g_kRdrFileOps;
+/** @} */
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/src/lib/kbuild_version.c b/src/lib/kbuild_version.c
new file mode 100644
index 0000000..962c5e7
--- /dev/null
+++ b/src/lib/kbuild_version.c
@@ -0,0 +1,64 @@
+/* $Id: kbuild_version.c 2851 2016-08-31 17:30:52Z bird $ */
+/** @file
+ * kbuild_version(), helper function.
+ */
+
+/*
+ * Copyright (c) 2007-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "kbuild_version.h"
+#include <string.h>
+#include <stdio.h>
+
+
+/**
+ * Prints the kBuild version message and returns 0.
+ *
+ * @returns 0
+ * @param   argv0       The argv0.
+ */
+int kbuild_version(const char *argv0)
+{
+    const char *tmp;
+
+    /* skip the path */
+    for (tmp = strpbrk(argv0, "\\/:"); tmp; tmp = strpbrk(argv0, "\\/:"))
+        argv0 = tmp + 1;
+
+    /* find the end, ignoring extenions */
+    tmp = strrchr(argv0, '.');
+    if (!tmp)
+        tmp = strchr(argv0, '\0');
+
+    printf("%.*s - kBuild version %d.%d.%d (r%u)\n",
+           (int)(tmp - argv0), argv0,
+           KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH,
+           KBUILD_SVN_REV);
+    return 0;
+}
+
diff --git a/src/lib/kbuild_version.h b/src/lib/kbuild_version.h
new file mode 100644
index 0000000..dba3d0b
--- /dev/null
+++ b/src/lib/kbuild_version.h
@@ -0,0 +1,37 @@
+/* $Id: kbuild_version.h 2851 2016-08-31 17:30:52Z bird $ */
+/** @file
+ * kbuild_version(), helper function.
+ */
+
+/*
+ * Copyright (c) 2007-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+#ifndef ___lib_kbuild_version_h___
+#define ___lib_kbuild_version_h___
+
+int kbuild_version(const char *argv0);
+
+#endif
+
diff --git a/src/lib/maybe_con_fwrite.c b/src/lib/maybe_con_fwrite.c
new file mode 100644
index 0000000..faaf770
--- /dev/null
+++ b/src/lib/maybe_con_fwrite.c
@@ -0,0 +1,122 @@
+/* $Id: maybe_con_fwrite.c 3547 2022-01-29 02:39:47Z bird $ */
+/** @file
+ * maybe_con_write - Optimized console output on windows.
+ */
+
+/*
+ * Copyright (c) 2016-2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "console.h"
+#ifdef KBUILD_OS_WINDOWS
+# include <windows.h>
+#endif
+#include <errno.h>
+#ifdef _MSC_VER
+# include <conio.h>
+#endif
+
+
+/**
+ * Drop-in fwrite replacement for optimizing console output on windows.
+ *
+ *
+ * @returns Units written; 0 & errno on failure.
+ * @param   pvBuf               What to write.
+ * @param   cbUnit              How much to write in each unit.
+ * @param   cUnits              How many units to write.
+ * @param   pFile               The file to write to.
+ */
+size_t maybe_con_fwrite(void const *pvBuf, size_t cbUnit, size_t cUnits, FILE *pFile)
+{
+#ifdef KBUILD_OS_WINDOWS
+    /*
+     * If it's a TTY, do our own conversion to wide char and call _cputws.
+     */
+    if (   cbUnit > 0
+        && cUnits > 0
+        && cbUnit < (unsigned)INT_MAX / 4
+        && cUnits < (unsigned)INT_MAX / 4
+        && (pFile == stdout || pFile == stderr))
+    {
+        int fd = fileno(pFile);
+        if (fd >= 0)
+        {
+            HANDLE hCon = (HANDLE)_get_osfhandle(fd);
+            if (   hCon != INVALID_HANDLE_VALUE
+                && hCon != NULL)
+            {
+                if (is_console_handle((intptr_t)hCon))
+                {
+                    /* Use a stack buffer if we can, falling back on the heap for larger writes: */
+                    wchar_t  awcBuf[1024];
+                    wchar_t *pawcBuf;
+                    wchar_t *pawcBufFree = NULL;
+                    size_t   cbToWrite   = cbUnit * cUnits;
+                    size_t   cwcBuf      = cbToWrite * 2 + 16;
+                    if (cwcBuf < sizeof(awcBuf) / sizeof(awcBuf[0]))
+                    {
+                        pawcBuf = awcBuf;
+                        cwcBuf  = sizeof(awcBuf) / sizeof(awcBuf[0]);
+                    }
+                    else
+                        pawcBufFree = pawcBuf = (wchar_t *)malloc(cwcBuf * sizeof(wchar_t));
+                    if (pawcBuf)
+                    {
+                        int cwcToWrite = MultiByteToWideChar(get_crt_codepage(), 0 /*dwFlags*/,
+                                                             pvBuf, (int)cbToWrite,
+                                                             pawcBuf, (int)(cwcBuf - 1));
+                        if (cwcToWrite > 0)
+                        {
+                            int rc;
+                            pawcBuf[cwcToWrite] = '\0';
+
+                            /* Let the CRT do the rest.  At least the Visual C++ 2010 CRT
+                               sources indicates _cputws will do the right thing.  */
+                            fflush(pFile);
+                            rc = _cputws(pawcBuf);
+                            if (pawcBufFree)
+                                free(pawcBufFree);
+                            if (rc >= 0)
+                                return cUnits;
+                            return 0;
+                        }
+                        free(pawcBufFree);
+                    }
+                }
+            }
+        }
+    }
+#endif
+
+    /*
+     * Semi regular write handling.
+     */
+    return fwrite(pvBuf, cbUnit, cUnits, pFile);
+}
+
diff --git a/src/lib/maybe_con_write.c b/src/lib/maybe_con_write.c
new file mode 100644
index 0000000..43522ef
--- /dev/null
+++ b/src/lib/maybe_con_write.c
@@ -0,0 +1,131 @@
+/* $Id: maybe_con_write.c 3547 2022-01-29 02:39:47Z bird $ */
+/** @file
+ * maybe_con_write - Optimized console output on windows.
+ */
+
+/*
+ * Copyright (c) 2016-2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "console.h"
+#ifdef KBUILD_OS_WINDOWS
+# include <windows.h>
+#endif
+#include <errno.h>
+#ifdef _MSC_VER
+# include <conio.h>
+typedef unsigned int to_write_t;
+#else
+typedef size_t to_write_t;
+#endif
+
+
+/**
+ * Drop-in write replacement for optimizing console output on windows.
+ *
+ * @returns Number of bytes written, -1 + errno on failure.
+ * @param   fd                  The file descript to write to.
+ * @param   pvBuf               What to write.
+ * @param   cbToWrite           How much to write.
+ */
+ssize_t maybe_con_write(int fd, void const *pvBuf, size_t cbToWrite)
+{
+    ssize_t cbWritten;
+
+#ifdef KBUILD_OS_WINDOWS
+    /*
+     * If it's a TTY, do our own conversion to wide char and
+     * call WriteConsoleW directly.
+     */
+    if (cbToWrite > 0 && cbToWrite < INT_MAX / 2)
+    {
+        HANDLE hCon = (HANDLE)_get_osfhandle(fd);
+        if (   hCon != INVALID_HANDLE_VALUE
+            && hCon != NULL)
+        {
+            if (is_console_handle((intptr_t)hCon))
+            {
+                wchar_t  awcBuf[1024];
+                wchar_t *pawcBuf;
+                wchar_t *pawcBufFree = NULL;
+                size_t   cwcBuf      = cbToWrite * 2 + 16;
+                if (cwcBuf < sizeof(awcBuf) / sizeof(awcBuf[0]))
+                {
+                    pawcBuf = awcBuf;
+                    cwcBuf  = sizeof(awcBuf) / sizeof(awcBuf[0]);
+                }
+                else
+                    pawcBufFree = pawcBuf = (wchar_t *)malloc(cwcBuf * sizeof(wchar_t));
+                if (pawcBuf)
+                {
+                    int cwcToWrite = MultiByteToWideChar(get_crt_codepage(), 0 /*dwFlags*/,
+                                                         pvBuf, (int)cbToWrite,
+                                                         pawcBuf, (int)(cwcBuf - 1));
+                    if (cwcToWrite > 0)
+                    {
+                        int rc;
+                        pawcBuf[cwcToWrite] = '\0';
+
+                        /* Let the CRT do the rest.  At least the Visual C++ 2010 CRT
+                           sources indicates _cputws will do the right thing.  */
+                        rc = _cputws(pawcBuf);
+                        if (pawcBufFree)
+                            free(pawcBufFree);
+                        if (rc >= 0)
+                            return cbToWrite;
+                        return -1;
+                    }
+                    free(pawcBufFree);
+                }
+            }
+        }
+    }
+#endif
+
+    /*
+     * Semi regular write handling.
+     */
+    cbWritten = write(fd, pvBuf, (to_write_t)cbToWrite);
+    if (cbWritten == (ssize_t)cbToWrite)
+    { /* likely */ }
+    else if (cbWritten >= 0 || errno == EINTR)
+    {
+        if (cbWritten < 0)
+            cbWritten = 0;
+        while (cbWritten < (ssize_t)cbToWrite)
+        {
+            ssize_t cbThis = write(fd, (char *)pvBuf + cbWritten, (to_write_t)(cbToWrite - cbWritten));
+            if (cbThis >= 0)
+                cbWritten += cbThis;
+            else if (errno != EINTR)
+                return -1;
+        }
+    }
+    return cbWritten;
+}
+
diff --git a/src/lib/md5.c b/src/lib/md5.c
new file mode 100644
index 0000000..3f17d3a
--- /dev/null
+++ b/src/lib/md5.c
@@ -0,0 +1,249 @@
+/*
+ * This code implements the MD5 message-digest algorithm.
+ * The algorithm is due to Ron Rivest.	This code was
+ * written by Colin Plumb in 1993, no copyright is claimed.
+ * This code is in the public domain; do with it what you wish.
+ *
+ * Equivalent code is available from RSA Data Security, Inc.
+ * This code has been tested against that, and is equivalent,
+ * except that you don't need to include two pages of legalese
+ * with every copy.
+ *
+ * To compute the message digest of a chunk of bytes, declare an
+ * MD5Context structure, pass it to MD5Init, call MD5Update as
+ * needed on buffers full of bytes, and then call MD5Final, which
+ * will fill a supplied 16-byte array with the digest.
+ */
+
+#include <string.h>
+#include "md5.h"
+#define uint32 uint32_t
+
+#include "k/kDefs.h"
+
+#if K_ENDIAN == K_ENDIAN_LITTLE
+# define byteReverse(buf, len)	do { /* Nothing */ } while (0)
+#else
+/*
+ * Note: this code is harmless on little-endian machines.
+ */
+void byteReverse(unsigned char *buf, unsigned longs)
+{
+    uint32 t;
+    do {
+	t = (uint32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
+	    ((unsigned) buf[1] << 8 | buf[0]);
+	*(uint32 *) buf = t;
+	buf += 4;
+    } while (--longs);
+}
+#endif
+
+/*
+ * Start MD5 accumulation.  Set bit count to 0 and buffer to mysterious
+ * initialization constants.
+ */
+void MD5Init(struct MD5Context *ctx)
+{
+    ctx->buf[0] = 0x67452301;
+    ctx->buf[1] = 0xefcdab89;
+    ctx->buf[2] = 0x98badcfe;
+    ctx->buf[3] = 0x10325476;
+
+    ctx->bits[0] = 0;
+    ctx->bits[1] = 0;
+}
+
+/*
+ * Update context to reflect the concatenation of another buffer full
+ * of bytes.
+ */
+void MD5Update(struct MD5Context *ctx, const unsigned char *buf, unsigned len)
+{
+    uint32 t;
+
+    /* Update bitcount */
+
+    t = ctx->bits[0];
+    if ((ctx->bits[0] = t + ((uint32) len << 3)) < t)
+	ctx->bits[1]++; 	/* Carry from low to high */
+    ctx->bits[1] += len >> 29;
+
+    t = (t >> 3) & 0x3f;	/* Bytes already in shsInfo->data */
+
+    /* Handle any leading odd-sized chunks */
+
+    if (t) {
+	unsigned char *p = (unsigned char *) ctx->in + t;
+
+	t = 64 - t;
+	if (len < t) {
+	    memcpy(p, buf, len);
+	    return;
+	}
+	memcpy(p, buf, t);
+	byteReverse(ctx->in, 16);
+	MD5Transform(ctx->buf, (uint32 *) ctx->in);
+	buf += t;
+	len -= t;
+    }
+    /* Process data in 64-byte chunks */
+
+    while (len >= 64) {
+	memcpy(ctx->in, buf, 64);
+	byteReverse(ctx->in, 16);
+	MD5Transform(ctx->buf, (uint32 *) ctx->in);
+	buf += 64;
+	len -= 64;
+    }
+
+    /* Handle any remaining bytes of data. */
+
+    memcpy(ctx->in, buf, len);
+}
+
+/*
+ * Final wrapup - pad to 64-byte boundary with the bit pattern
+ * 1 0* (64-bit count of bits processed, MSB-first)
+ */
+void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
+{
+    unsigned count;
+    unsigned char *p;
+
+    /* Compute number of bytes mod 64 */
+    count = (ctx->bits[0] >> 3) & 0x3F;
+
+    /* Set the first char of padding to 0x80.  This is safe since there is
+       always at least one byte free */
+    p = ctx->in + count;
+    *p++ = 0x80;
+
+    /* Bytes of padding needed to make 64 bytes */
+    count = 64 - 1 - count;
+
+    /* Pad out to 56 mod 64 */
+    if (count < 8) {
+	/* Two lots of padding:  Pad the first block to 64 bytes */
+	memset(p, 0, count);
+	byteReverse(ctx->in, 16);
+	MD5Transform(ctx->buf, (uint32 *) ctx->in);
+
+	/* Now fill the next block with 56 bytes */
+	memset(ctx->in, 0, 56);
+    } else {
+	/* Pad block to 56 bytes */
+	memset(p, 0, count - 8);
+    }
+    byteReverse(ctx->in, 14);
+
+    /* Append length in bits and transform */
+    ((uint32 *) ctx->in)[14] = ctx->bits[0];
+    ((uint32 *) ctx->in)[15] = ctx->bits[1];
+
+    MD5Transform(ctx->buf, (uint32 *) ctx->in);
+    byteReverse((unsigned char *) ctx->buf, 4);
+    memcpy(digest, ctx->buf, 16);
+    memset(ctx, 0, sizeof(*ctx));       /* In case it's sensitive */
+}
+
+
+/* The four core functions - F1 is optimized somewhat */
+
+/* #define F1(x, y, z) (x & y | ~x & z) */
+#define F1(x, y, z) (z ^ (x & (y ^ z)))
+#define F2(x, y, z) F1(z, x, y)
+#define F3(x, y, z) (x ^ y ^ z)
+#define F4(x, y, z) (y ^ (x | ~z))
+
+/* This is the central step in the MD5 algorithm. */
+#define MD5STEP(f, w, x, y, z, data, s) \
+	( w += f(x, y, z) + data,  w = w<<s | w>>(32-s),  w += x )
+
+/*
+ * The core of the MD5 algorithm, this alters an existing MD5 hash to
+ * reflect the addition of 16 longwords of new data.  MD5Update blocks
+ * the data and converts bytes into longwords for this routine.
+ */
+void MD5Transform(uint32 buf[4], uint32 in[16])
+{
+    register uint32 a, b, c, d;
+
+    a = buf[0];
+    b = buf[1];
+    c = buf[2];
+    d = buf[3];
+
+    MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
+    MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
+    MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
+    MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
+    MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
+    MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
+    MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
+    MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
+    MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
+    MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
+    MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
+    MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
+    MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
+    MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
+    MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
+    MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
+
+    MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
+    MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
+    MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
+    MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
+    MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
+    MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
+    MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
+    MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
+    MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
+    MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
+    MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
+    MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
+    MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
+    MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
+    MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
+    MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
+
+    MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
+    MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
+    MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
+    MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
+    MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
+    MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
+    MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
+    MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
+    MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
+    MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
+    MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
+    MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
+    MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
+    MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
+    MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
+    MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
+
+    MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
+    MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
+    MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
+    MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
+    MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
+    MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
+    MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
+    MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
+    MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
+    MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
+    MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
+    MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
+    MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
+    MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
+    MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
+    MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
+
+    buf[0] += a;
+    buf[1] += b;
+    buf[2] += c;
+    buf[3] += d;
+}
diff --git a/src/lib/md5.h b/src/lib/md5.h
new file mode 100644
index 0000000..227d31a
--- /dev/null
+++ b/src/lib/md5.h
@@ -0,0 +1,17 @@
+#ifndef MD5_H
+#define MD5_H
+
+#include "mytypes.h"
+
+struct MD5Context {
+        uint32_t buf[4];
+        uint32_t bits[2];
+        unsigned char in[64];
+};
+
+void MD5Init(struct MD5Context *);
+void MD5Update(struct MD5Context *, const unsigned char *, unsigned);
+void MD5Final(unsigned char digest[16], struct MD5Context *);
+void MD5Transform(uint32_t buf[4], uint32_t in[16]);
+
+#endif /* !MD5_H */
diff --git a/src/lib/msc_buffered_printf.c b/src/lib/msc_buffered_printf.c
new file mode 100644
index 0000000..a025ba8
--- /dev/null
+++ b/src/lib/msc_buffered_printf.c
@@ -0,0 +1,266 @@
+/* $Id: msc_buffered_printf.c 3547 2022-01-29 02:39:47Z bird $ */
+/** @file
+ * printf, vprintf, fprintf, puts, fputs console optimizations for Windows/MSC.
+ */
+
+/*
+ * Copyright (c) 2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <Windows.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <io.h>
+#include <conio.h>
+#include <malloc.h>
+#include <locale.h>
+#include "console.h"
+
+#undef printf
+#undef vprintf
+#undef fprintf
+#undef puts
+#undef fputs
+#pragma warning(disable: 4273) /* inconsistent dll linkage*/
+
+#ifndef KWORKER
+# define DLL_IMPORT __declspec(dllexport)
+#else
+# define DLL_IMPORT
+#endif
+
+
+
+/**
+ * Replaces printf for MSC to speed up console output.
+ *
+ * @returns chars written on success, -1 and errno on failure.
+ * @param   pszFormat           The format string.
+ * @param   ...                 Format arguments.
+ */
+DLL_IMPORT
+int __cdecl printf(const char *pszFormat, ...)
+{
+    int cchRet;
+    va_list va;
+    va_start(va, pszFormat);
+    cchRet = vprintf(pszFormat, va);
+    va_end(va);
+    return cchRet;
+}
+
+
+/**
+ * Replaces vprintf for MSC to speed up console output.
+ *
+ * @returns chars written on success, -1 and errno on failure.
+ * @param   pszFormat           The format string.
+ * @param   va                  Format arguments.
+ */
+DLL_IMPORT
+int __cdecl vprintf(const char *pszFormat, va_list va)
+{
+    /*
+     * If it's a TTY, try format into a stack buffer and output using our
+     * console optimized fwrite wrapper.
+     */
+    if (*pszFormat != '\0')
+    {
+        int fd = fileno(stdout);
+        if (fd >= 0)
+        {
+            if (is_console(fd))
+            {
+                char *pszTmp = (char *)alloca(16384);
+                va_list va2 = va;
+                int cchRet = vsnprintf(pszTmp, 16384, pszFormat, va2);
+                if (cchRet < 16384 - 1)
+                    return (int)maybe_con_fwrite(pszTmp, cchRet, 1, stdout);
+            }
+        }
+    }
+
+    /*
+     * Fallback.
+     */
+    return vfprintf(stdout, pszFormat, va);
+}
+
+
+/**
+ * Replaces fprintf for MSC to speed up console output.
+ *
+ * @returns chars written on success, -1 and errno on failure.
+ * @param   pFile               The output file/stream.
+ * @param   pszFormat           The format string.
+ * @param   va                  Format arguments.
+ */
+DLL_IMPORT
+int __cdecl fprintf(FILE *pFile, const char *pszFormat, ...)
+{
+    va_list va;
+    int cchRet;
+
+    /*
+     * If it's a TTY, try format into a stack buffer and output using our
+     * console optimized fwrite wrapper.
+     */
+    if (*pszFormat != '\0')
+    {
+        int fd = fileno(pFile);
+        if (fd >= 0)
+        {
+            if (is_console(fd))
+            {
+                char *pszTmp = (char *)alloca(16384);
+                if (pszTmp)
+                {
+                    va_start(va, pszFormat);
+                    cchRet = vsnprintf(pszTmp, 16384, pszFormat, va);
+                    va_end(va);
+                    if (cchRet < 16384 - 1)
+                        return (int)maybe_con_fwrite(pszTmp, cchRet, 1, pFile);
+                }
+            }
+        }
+    }
+
+    /*
+     * Fallback.
+     */
+    va_start(va, pszFormat);
+    cchRet = vfprintf(pFile, pszFormat, va);
+    va_end(va);
+    return cchRet;
+}
+
+
+/**
+ * Replaces puts for MSC to speed up console output.
+ *
+ * @returns Units written; 0 & errno on failure.
+ * @param   pszString           The string to write. (newline is appended)
+ */
+DLL_IMPORT
+int __cdecl puts(const char *pszString)
+{
+    /*
+     * If it's a TTY, we convert it to a wide char string with a newline
+     * appended right here.  Going thru maybe_con_fwrite is just extra
+     * buffering due to the added newline.
+     */
+    size_t cchString = strlen(pszString);
+    size_t cch;
+    if (cchString > 0 && cchString < INT_MAX / 2)
+    {
+        int fd = fileno(stdout);
+        if (fd >= 0)
+        {
+            if (is_console(fd))
+            {
+                HANDLE hCon = (HANDLE)_get_osfhandle(fd);
+                if (   hCon != INVALID_HANDLE_VALUE
+                    && hCon != NULL)
+                {
+                    wchar_t  awcBuf[1024];
+                    wchar_t *pawcBuf;
+                    wchar_t *pawcBufFree = NULL;
+                    size_t   cwcBuf      = cchString * 2 + 16 + 1; /* +1 for added newline */
+                    if (cwcBuf < sizeof(awcBuf) / sizeof(awcBuf[0]))
+                    {
+                        pawcBuf = awcBuf;
+                        cwcBuf  = sizeof(awcBuf) / sizeof(awcBuf[0]);
+                    }
+                    else
+                        pawcBufFree = pawcBuf = (wchar_t *)malloc(cwcBuf * sizeof(wchar_t));
+                    if (pawcBuf)
+                    {
+                        int cwcToWrite = MultiByteToWideChar(get_crt_codepage(), 0 /*dwFlags*/,
+                                                             pszString, (int)cchString,
+                                                             pawcBuf, (int)(cwcBuf - 1));
+                        if (cwcToWrite > 0)
+                        {
+                            int rc;
+                            pawcBuf[cwcToWrite++] = '\n';
+                            pawcBuf[cwcToWrite]   = '\0';
+
+                            /* Let the CRT do the rest.  At least the Visual C++ 2010 CRT
+                               sources indicates _cputws will do the right thing.  */
+                            fflush(stdout);
+                            rc = _cputws(pawcBuf);
+                            if (pawcBufFree)
+                                free(pawcBufFree);
+                            if (rc >= 0)
+                                return 0;
+                            return -1;
+                        }
+                        free(pawcBufFree);
+                    }
+                }
+            }
+        }
+    }
+
+    /*
+     * Fallback.
+     */
+    cch = fwrite(pszString, cchString, 1, stdout);
+    if (cch == cchString)
+    {
+        if (putc('\n', stdout) != EOF)
+            return 0;
+    }
+    return -1;
+}
+
+
+/**
+ * Replaces puts for MSC to speed up console output.
+ *
+ * @returns Units written; 0 & errno on failure.
+ * @param   pszString           The string to write (no newline added).
+ * @param   pFile               The output file.
+ */
+DLL_IMPORT
+int __cdecl fputs(const char *pszString, FILE *pFile)
+{
+    size_t cchString = strlen(pszString);
+    size_t cch = maybe_con_fwrite(pszString, cchString, 1, pFile);
+    if (cch == cchString)
+        return 0;
+    return -1;
+}
+
+
+
+void * const __imp_printf  = (void *)(uintptr_t)printf;
+void * const __imp_vprintf = (void *)(uintptr_t)vprintf;
+void * const __imp_fprintf = (void *)(uintptr_t)fprintf;
+void * const __imp_puts    = (void *)(uintptr_t)puts;
+void * const __imp_fputs   = (void *)(uintptr_t)fputs;
+
diff --git a/src/lib/mytypes.h b/src/lib/mytypes.h
new file mode 100644
index 0000000..877df8f
--- /dev/null
+++ b/src/lib/mytypes.h
@@ -0,0 +1,48 @@
+/* $Id: mytypes.h 2851 2016-08-31 17:30:52Z bird $ */
+/** @file
+ * mytypes - wrapper that ensures the necessary uintXY_t types are defined.
+ */
+
+/*
+ * Copyright (c) 2007-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+#ifndef ___mytypes_h___
+#define ___mytypes_h___
+
+#include <stdlib.h>
+#include <stddef.h> /* MSC: intptr_t */
+#include <sys/types.h>
+
+#if defined(_MSC_VER)
+typedef unsigned int uint32_t;
+typedef signed int int32_t;
+typedef unsigned char uint8_t;
+typedef signed char int8_t;
+#else
+# include <stdint.h>
+#endif
+
+#endif
+
diff --git a/src/lib/nt/Makefile.kup b/src/lib/nt/Makefile.kup
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/lib/nt/Makefile.kup
diff --git a/src/lib/nt/fts-nt.c b/src/lib/nt/fts-nt.c
new file mode 100644
index 0000000..5f58abb
--- /dev/null
+++ b/src/lib/nt/fts-nt.c
@@ -0,0 +1,1421 @@
+/* $Id: fts-nt.c 3535 2021-12-20 23:32:28Z bird $ */
+/** @file
+ * Source for the NT port of BSD fts.c.
+ *
+ * @copyright   1990, 1993, 1994 The Regents of the University of California.  All rights reserved.
+ * @copyright   NT modifications Copyright (C) 2016 knut st. osmundsen <bird-klibc-spam-xiv@anduin.net>
+ * @licenses    BSD3
+ *
+ *
+ * Some hints about how the code works.
+ *
+ * The input directories & files are entered into a pseudo root directory and
+ * processed one after another, depth first.
+ *
+ * Directories are completely read into memory first and arranged as linked
+ * list anchored on FTS::fts_cur.  fts_read does a pop-like operation on that
+ * list, freeing the nodes after they've been completely processed.
+ * Subdirectories are returned twice by fts_read, the first time when it
+ * decends into it (FTS_D), and the second time as it ascends from it (FTS_DP).
+ *
+ * In parallel to fts_read, there's the fts_children API that fetches the
+ * directory content in a similar manner, but for the consumption of the API
+ * caller rather than FTS itself.  The result hangs on FTS::fts_child so it can
+ * be freed when the directory changes or used by fts_read when it is called
+ * upon to enumerate the directory.
+ *
+ *
+ * The NT port of the code does away with the directory changing in favor of
+ * using directory relative opens (present in NT since for ever, just not
+ * exposed thru Win32).  A new FTSENT member fts_dirfd has been added to make
+ * this possible for API users too.
+ *
+ * Note! When using Win32 APIs with path input relative to the current
+ *  	 directory, the internal DOS <-> NT path converter will expand it to a
+ *  	 full path and subject it to the 260 char limit.
+ *
+ * The richer NT directory enumeration API allows us to do away with all the
+ * stat() calls, and not have to do link counting and other interesting things
+ * to try speed things up.  (You typical stat() implementation on windows is
+ * actually a directory enum call with the name of the file as filter.)
+ */
+
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $OpenBSD: fts.c,v 1.22 1999/10/03 19:22:22 millert Exp $
+ */
+
+#if 0
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fts.c	8.6 (Berkeley) 8/14/94";
+#endif /* LIBC_SCCS and not lint */
+#endif
+
+#include <errno.h>
+#include "fts-nt.h"
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include "nthlp.h"
+#include "ntdir.h"
+#include "ntopenat.h" /* for AT_FDCWD */
+#include <stdio.h>//debug
+
+static FTSENT	*fts_alloc(FTS *sp, char const *name, size_t namelen, wchar_t const *wcsname, size_t cwcname);
+static FTSENT	*fts_alloc_ansi(FTS *sp, char const *name, size_t namelen);
+static FTSENT	*fts_alloc_utf16(FTS *sp, wchar_t const *wcsname, size_t cwcname);
+static void 	 nt_fts_free_alloc_cache(FTS *sp);
+static FTSENT	*fts_build(FTS *, int);
+static void	 fts_lfree(FTSENT *);
+static void	 fts_load(FTS *, FTSENT *);
+static size_t	 fts_maxarglen(char * const *);
+static size_t	 fts_maxarglenw(wchar_t * const *);
+static void	 fts_padjust(FTS *, FTSENT *);
+static void	 fts_padjustw(FTS *, FTSENT *);
+static int	 fts_palloc(FTS *, size_t, size_t);
+static FTSENT	*fts_sort(FTS *, FTSENT *, size_t);
+static int	 fts_stat(FTS *, FTSENT *, int, HANDLE);
+static int	 fts_process_stats(FTSENT *, BirdStat_T const *);
+
+#define	ISDOT(a)	(a[0] == '.' && (!a[1] || (a[1] == '.' && !a[2])))
+
+#define	CLR(opt)	(sp->fts_options &= ~(opt))
+#define	ISSET(opt)	(sp->fts_options & (opt))
+#define	SET(opt)	(sp->fts_options |= (opt))
+
+/* fts_build flags */
+#define	BCHILD		1		/* fts_children */
+#define	BNAMES		2		/* fts_children, names only */
+#define	BREAD		3		/* fts_read */
+
+/* NT needs these: */
+#define MAXPATHLEN 260
+#define MAX(a, b)  ( (a) >= (b) ? (a) : (b) )
+
+/** Enables BirdDir_T reuse. (Saves malloc and free calls.) */
+#define FTS_WITH_DIRHANDLE_REUSE
+/** Enables allocation statistics. */
+//#define FTS_WITH_STATISTICS
+/** Enables FTSENT allocation cache. */
+#define FTS_WITH_ALLOC_CACHE
+/** Number of size buckets for the FTSENT allocation cache. */
+#define FTS_NUM_FREE_BUCKETS    64
+/** Shift for converting size to free bucket index. */
+#define FTS_FREE_BUCKET_SHIFT   4
+/** The FTSENT allocation alignment. */
+#define FTS_ALIGN_FTSENT        (1U << FTS_FREE_BUCKET_SHIFT)
+
+/*
+ * Internal representation of an FTS, including extra implementation
+ * details.  The FTS returned from fts_open points to this structure's
+ * ftsp_fts member (and can be cast to an _fts_private as required)
+ */
+struct _fts_private {
+	FTS		ftsp_fts;
+#ifdef FTS_WITH_DIRHANDLE_REUSE
+	/** Statically allocate directory handle. */
+	BirdDir_T	dirhandle;
+#endif
+#ifdef FTS_WITH_ALLOC_CACHE
+	/** Number of free entries in the above buckets. */
+	size_t		numfree;
+# ifdef FTS_WITH_STATISTICS
+	size_t		allocs;
+	size_t		hits;
+	size_t		misses;
+# endif
+	/** Free FTSENT buckets (by size).
+	 * This is to avoid hitting the heap, which is a little sluggish on windows. */
+	struct
+	{
+		FTSENT		*head;
+	} freebuckets[FTS_NUM_FREE_BUCKETS];
+#endif
+};
+
+
+static FTS * FTSCALL
+nt_fts_open_common(char * const *argv, wchar_t * const *wcsargv, int options,
+    int (*compar)(const FTSENT * const *, const FTSENT * const *))
+{
+	struct _fts_private *priv;
+	FTS *sp;
+	FTSENT *p, *root;
+	FTSENT *parent, *tmp;
+	size_t len, nitems;
+
+	birdResolveImports();
+
+	/* Options check. */
+	if (options & ~FTS_OPTIONMASK) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	/* fts_open() requires at least one path */
+	if (wcsargv ? *wcsargv == NULL : *argv == NULL) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	/* Allocate/initialize the stream. */
+	if ((priv = calloc(1, sizeof(*priv))) == NULL)
+		return (NULL);
+	sp = &priv->ftsp_fts;
+	sp->fts_compar = compar;
+	sp->fts_options = options;
+	SET(FTS_NOCHDIR); /* NT: FTS_NOCHDIR is always on (for external consumes) */
+	sp->fts_cwd_fd = AT_FDCWD;
+
+	/* Shush, GCC. */
+	tmp = NULL;
+
+	/*
+	 * Start out with 1K of path space, and enough, in any case,
+	 * to hold the user's paths.
+	 */
+	if (fts_palloc(sp, MAX(argv ? fts_maxarglen(argv) : 1, MAXPATHLEN),
+				   MAX(wcsargv ? fts_maxarglenw(wcsargv) : 1, MAXPATHLEN)) )
+		goto mem1;
+
+	/* Allocate/initialize root's parent. */
+	if ((parent = fts_alloc(sp, NULL, 0, NULL, 0)) == NULL)
+		goto mem2;
+	parent->fts_level = FTS_ROOTPARENTLEVEL;
+
+	/* Allocate/initialize root(s). */
+	for (root = NULL, nitems = 0; wcsargv ? *wcsargv != NULL : *argv != NULL; ++nitems) {
+		/* NT: We need to do some small input transformations to make this and
+		       the API user code happy.  1. Lone drive letters get a dot
+		       appended so it won't matter if a slash is appended afterwards.
+		       2. DOS slashes are converted to UNIX ones. */
+		wchar_t *wcslash;
+
+		if (wcsargv) {
+			len = wcslen(*wcsargv);
+			if (len == 2 && wcsargv[0][1] == ':') {
+				wchar_t wcsdrive[4];
+				wcsdrive[0] = wcsargv[0][0];
+				wcsdrive[1] = ':';
+				wcsdrive[2] = '.';
+				wcsdrive[3] = '\0';
+				p = fts_alloc_utf16(sp, wcsdrive, 3);
+			} else {
+				p = fts_alloc_utf16(sp, *wcsargv, len);
+			}
+			wcsargv++;
+		} else {
+			len = strlen(*argv);
+			if (len == 2 && argv[0][1] == ':') {
+				char szdrive[4];
+				szdrive[0] = argv[0][0];
+				szdrive[1] = ':';
+				szdrive[2] = '.';
+				szdrive[3] = '\0';
+				p = fts_alloc_ansi(sp, szdrive, 3);
+			} else {
+				p = fts_alloc_ansi(sp, *argv, len);
+			}
+			argv++;
+		}
+		if (p != NULL) { /* likely */ } else { goto mem3; }
+
+		wcslash = wcschr(p->fts_wcsname, '\\');
+		while (wcslash != NULL) {
+			*wcslash++ = '/';
+			wcslash = wcschr(p->fts_wcsname, '\\');
+		}
+
+		if (p->fts_name) {
+			char *slash = strchr(p->fts_name, '\\');
+			while (slash != NULL) {
+				*slash++ = '/';
+				slash = strchr(p->fts_name, '\\');
+			}
+		}
+
+		p->fts_level = FTS_ROOTLEVEL;
+		p->fts_parent = parent;
+		p->fts_accpath = p->fts_name;
+		p->fts_wcsaccpath = p->fts_wcsname;
+		p->fts_info = fts_stat(sp, p, ISSET(FTS_COMFOLLOW), INVALID_HANDLE_VALUE);
+
+		/* Command-line "." and ".." are real directories. */
+		if (p->fts_info == FTS_DOT)
+			p->fts_info = FTS_D;
+
+		/*
+		 * If comparison routine supplied, traverse in sorted
+		 * order; otherwise traverse in the order specified.
+		 */
+		if (compar) {
+			p->fts_link = root;
+			root = p;
+		} else {
+			p->fts_link = NULL;
+			if (root == NULL)
+				tmp = root = p;
+			else {
+				tmp->fts_link = p;
+				tmp = p;
+			}
+		}
+	}
+	if (compar && nitems > 1)
+		root = fts_sort(sp, root, nitems);
+
+	/*
+	 * Allocate a dummy pointer and make fts_read think that we've just
+	 * finished the node before the root(s); set p->fts_info to FTS_INIT
+	 * so that everything about the "current" node is ignored.
+	 */
+	if ((sp->fts_cur = fts_alloc(sp, NULL, 0, NULL, 0)) == NULL)
+		goto mem3;
+	sp->fts_cur->fts_link = root;
+	sp->fts_cur->fts_info = FTS_INIT;
+
+	return (sp);
+
+mem3:
+	fts_lfree(root);
+	free(parent);
+mem2:
+	free(sp->fts_path);
+	free(sp->fts_wcspath);
+mem1:
+	free(sp);
+	return (NULL);
+}
+
+
+FTS * FTSCALL
+nt_fts_open(char * const *argv, int options,
+    int (*compar)(const FTSENT * const *, const FTSENT * const *))
+{
+	return nt_fts_open_common(argv, NULL, options, compar);
+}
+
+
+FTS * FTSCALL
+nt_fts_openw(wchar_t * const *argv, int options,
+    int (*compar)(const FTSENT * const *, const FTSENT * const *))
+{
+	return nt_fts_open_common(NULL, argv, options, compar);
+}
+
+
+/**
+ * Called by fts_read for FTS_ROOTLEVEL entries only.
+ */
+static void
+fts_load(FTS *sp, FTSENT *p)
+{
+	size_t len;
+	wchar_t *pwc;
+
+	/*
+	 * Load the stream structure for the next traversal.  Since we don't
+	 * actually enter the directory until after the preorder visit, set
+	 * the fts_accpath field specially so the chdir gets done to the right
+	 * place and the user can access the first node.  From fts_open it's
+	 * known that the path will fit.
+	 */
+	if (!(sp->fts_options & FTS_NO_ANSI)) {
+		char *cp;
+		len = p->fts_pathlen = p->fts_namelen;
+		memmove(sp->fts_path, p->fts_name, len + 1);
+		cp = strrchr(p->fts_name, '/');
+		if (cp != NULL && (cp != p->fts_name || cp[1])) {
+			len = strlen(++cp);
+			memmove(p->fts_name, cp, len + 1);
+			p->fts_namelen = len;
+		}
+		p->fts_accpath = p->fts_path = sp->fts_path;
+	}
+
+	len = p->fts_cwcpath = p->fts_cwcname;
+	memmove(sp->fts_wcspath, p->fts_wcsname, (len + 1) * sizeof(wchar_t));
+	pwc = wcsrchr(p->fts_wcsname, '/');
+	if (pwc != NULL && (pwc != p->fts_wcsname || pwc[1])) {
+		len = wcslen(++pwc);
+		memmove(p->fts_wcsname, pwc, (len + 1) * sizeof(wchar_t));
+		p->fts_cwcname = len;
+	}
+	p->fts_wcsaccpath = p->fts_wcspath = sp->fts_wcspath;
+
+	sp->fts_dev = p->fts_dev;
+}
+
+
+int FTSCALL
+nt_fts_close(FTS *sp)
+{
+	FTSENT *freep, *p;
+	/*int saved_errno;*/
+
+	/*
+	 * This still works if we haven't read anything -- the dummy structure
+	 * points to the root list, so we step through to the end of the root
+	 * list which has a valid parent pointer.
+	 */
+	if (sp->fts_cur) {
+		for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
+			freep = p;
+			p = p->fts_link != NULL ? p->fts_link : p->fts_parent;
+			free(freep);
+		}
+		free(p);
+	}
+
+	/* Free up child linked list, sort array, path buffer. */
+	if (sp->fts_child)
+		fts_lfree(sp->fts_child);
+	if (sp->fts_array)
+		free(sp->fts_array);
+	free(sp->fts_path);
+	free(sp->fts_wcspath);
+#ifdef FTS_WITH_ALLOC_CACHE
+# ifdef FTS_WITH_STATISTICS
+	{
+		struct _fts_private *priv = (struct _fts_private *)sp;
+		fprintf(stderr, "numfree=%u allocs=%u  hits=%u (%uppt)  misses=%u (%uppt)  other=%u\n",
+			priv->numfree, priv->allocs,
+			priv->hits,   (unsigned)((double)priv->hits   * 1000.0 / priv->allocs),
+			priv->misses, (unsigned)((double)priv->misses * 1000.0 / priv->allocs),
+			priv->allocs - priv->misses - priv->hits);
+        }
+# endif
+#endif
+	nt_fts_free_alloc_cache(sp);
+#ifdef FTS_WITH_DIRHANDLE_REUSE
+	birdDirClose(&((struct _fts_private *)sp)->dirhandle);
+#endif
+
+	/* Free up the stream pointer. */
+	free(sp);
+	return (0);
+}
+
+
+/**
+ * Frees a FTSENT structure by way of the allocation cache.
+ */
+static void
+fts_free_entry(FTS *sp, FTSENT *tmp)
+{
+	if (tmp != NULL) {
+		struct _fts_private *priv = (struct _fts_private *)sp;
+#ifdef FTS_WITH_ALLOC_CACHE
+		size_t idx;
+#endif
+
+		if (tmp->fts_dirfd == INVALID_HANDLE_VALUE) {
+			/* There are probably more files than directories out there. */
+		} else {
+			birdCloseFile(tmp->fts_dirfd);
+			tmp->fts_dirfd = INVALID_HANDLE_VALUE;
+		}
+
+#ifdef FTS_WITH_ALLOC_CACHE
+		idx = (tmp->fts_alloc_size - sizeof(FTSENT)) >> FTS_FREE_BUCKET_SHIFT;
+		if (idx < FTS_NUM_FREE_BUCKETS) {
+			tmp->fts_link = priv->freebuckets[idx].head;
+			priv->freebuckets[idx].head = tmp;
+		} else {
+			tmp->fts_link = priv->freebuckets[FTS_NUM_FREE_BUCKETS - 1].head;
+			priv->freebuckets[FTS_NUM_FREE_BUCKETS - 1].head = tmp;
+		}
+
+		priv->numfree++;
+#else
+		free(tmp);
+#endif
+	}
+}
+
+
+/*
+ * Special case of "/" at the end of the path so that slashes aren't
+ * appended which would cause paths to be written as "....//foo".
+ */
+#define	NAPPEND(p)  ( p->fts_pathlen - (p->fts_path[p->fts_pathlen - 1]    ==  '/') )
+#define	NAPPENDW(p) ( p->fts_cwcpath - (p->fts_wcspath[p->fts_cwcpath - 1] == L'/') )
+
+FTSENT * FTSCALL
+nt_fts_read(FTS *sp)
+{
+	FTSENT *p, *tmp;
+	int instr;
+	wchar_t *pwc;
+
+	/* Set current node pointer. */
+	p = sp->fts_cur;
+
+	/* If finished or unrecoverable error, return NULL. */
+	if (p != NULL && !ISSET(FTS_STOP)) {
+		/* likely */
+	} else {
+		return (NULL);
+	}
+
+	/* Save and zero out user instructions. */
+	instr = p->fts_instr;
+	p->fts_instr = FTS_NOINSTR;
+
+	/* Any type of file may be re-visited; re-stat and re-turn. */
+	if (instr != FTS_AGAIN) {
+		/* likely */
+	} else {
+		p->fts_info = fts_stat(sp, p, 0, INVALID_HANDLE_VALUE);
+		return (p);
+	}
+
+	/*
+	 * Following a symlink -- SLNONE test allows application to see
+	 * SLNONE and recover.  If indirecting through a symlink, have
+	 * keep a pointer to current location.  If unable to get that
+	 * pointer, follow fails.
+	 *
+	 * NT: Since we don't change directory, we just set FTS_SYMFOLLOW
+	 *     here in case a API client checks it.
+	 */
+	if (   instr != FTS_FOLLOW
+	    || (p->fts_info != FTS_SL && p->fts_info != FTS_SLNONE)) {
+	    /* likely */
+	} else {
+		p->fts_info = fts_stat(sp, p, 1, INVALID_HANDLE_VALUE);
+		if (p->fts_info == FTS_D /*&& !ISSET(FTS_NOCHDIR)*/) {
+			p->fts_flags |= FTS_SYMFOLLOW;
+		}
+		return (p);
+	}
+
+	/* Directory in pre-order. */
+	if (p->fts_info == FTS_D) {
+		/* If skipped or crossed mount point, do post-order visit. */
+		if (  instr == FTS_SKIP
+		    || (ISSET(FTS_XDEV) && p->fts_dev != sp->fts_dev)) {
+			if (sp->fts_child) {
+				fts_lfree(sp->fts_child);
+				sp->fts_child = NULL;
+			}
+			p->fts_info = FTS_DP;
+			return (p);
+		}
+
+		/* Rebuild if only read the names and now traversing. */
+		if (sp->fts_child != NULL && ISSET(FTS_NAMEONLY)) {
+			CLR(FTS_NAMEONLY);
+			fts_lfree(sp->fts_child);
+			sp->fts_child = NULL;
+		}
+
+		/*
+		 * Cd to the subdirectory.
+		 *
+		 * If have already read and now fail to chdir, whack the list
+		 * to make the names come out right, and set the parent errno
+		 * so the application will eventually get an error condition.
+		 * Set the FTS_DONTCHDIR flag so that when we logically change
+		 * directories back to the parent we don't do a chdir.
+		 *
+		 * If haven't read do so.  If the read fails, fts_build sets
+		 * FTS_STOP or the fts_info field of the node.
+		 */
+		if (sp->fts_child == NULL) {
+			p = fts_build(sp, BREAD);
+			if (p != NULL) {
+			    /* likely */
+			} else {
+			    if (ISSET(FTS_STOP))
+				    return (NULL);
+			    return sp->fts_cur;
+			}
+
+		} else {
+			p = sp->fts_child;
+			sp->fts_child = NULL;
+		}
+		goto name;
+	}
+
+	/* Move to the next node on this level. */
+next:	tmp = p;
+	if ((p = p->fts_link) != NULL) {
+		/*
+		 * If reached the top, return to the original directory (or
+		 * the root of the tree), and load the paths for the next root.
+		 */
+		if (p->fts_level != FTS_ROOTLEVEL) {
+			/* likely */
+		} else {
+			fts_free_entry(sp, tmp);
+			fts_load(sp, p);
+			return (sp->fts_cur = p);
+		}
+
+		/*
+		 * User may have called fts_set on the node.  If skipped,
+		 * ignore.  If followed, get a file descriptor so we can
+		 * get back if necessary.
+		 */
+		if (p->fts_instr != FTS_SKIP) {
+			/* likely */
+		} else {
+			fts_free_entry(sp, tmp);
+			goto next;
+		}
+		if (p->fts_instr != FTS_FOLLOW) {
+			/* likely */
+		} else {
+			p->fts_info = fts_stat(sp, p, 1, INVALID_HANDLE_VALUE);
+			/* NT: See above regarding fts_flags. */
+			if (p->fts_info == FTS_D) {
+				p->fts_flags |= FTS_SYMFOLLOW;
+			}
+			p->fts_instr = FTS_NOINSTR;
+		}
+
+		fts_free_entry(sp, tmp);
+
+name:
+		if (!(sp->fts_options & FTS_NO_ANSI)) {
+			char *t = sp->fts_path + NAPPEND(p->fts_parent);
+			*t++ = '/';
+			memmove(t, p->fts_name, p->fts_namelen + 1);
+		}
+		pwc = sp->fts_wcspath + NAPPENDW(p->fts_parent);
+		*pwc++ = '/';
+		memmove(pwc, p->fts_wcsname, (p->fts_cwcname + 1) * sizeof(wchar_t));
+		return (sp->fts_cur = p);
+	}
+
+	/* Move up to the parent node. */
+	p = tmp->fts_parent;
+
+	if (p->fts_level != FTS_ROOTPARENTLEVEL) {
+		/* likely */
+	} else {
+		/*
+		 * Done; free everything up and set errno to 0 so the user
+		 * can distinguish between error and EOF.
+		 */
+		fts_free_entry(sp, tmp);
+		fts_free_entry(sp, p);
+		errno = 0;
+		return (sp->fts_cur = NULL);
+	}
+
+	/* NUL terminate the pathname. */
+	if (!(sp->fts_options & FTS_NO_ANSI))
+		sp->fts_path[p->fts_pathlen] = '\0';
+	sp->fts_wcspath[ p->fts_cwcpath] = '\0';
+
+	/*
+	 * Return to the parent directory.  If at a root node or came through
+	 * a symlink, go back through the file descriptor.  Otherwise, cd up
+	 * one directory.
+	 *
+	 * NT: We're doing no fchdir, but we need to close the directory handle.
+	 */
+	if (p->fts_dirfd != INVALID_HANDLE_VALUE) {
+		birdCloseFile(p->fts_dirfd);
+		p->fts_dirfd = INVALID_HANDLE_VALUE;
+	}
+	fts_free_entry(sp, tmp);
+	p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP;
+	return (sp->fts_cur = p);
+}
+
+/*
+ * Fts_set takes the stream as an argument although it's not used in this
+ * implementation; it would be necessary if anyone wanted to add global
+ * semantics to fts using fts_set.  An error return is allowed for similar
+ * reasons.
+ */
+/* ARGSUSED */
+int FTSCALL
+nt_fts_set(FTS *sp, FTSENT *p, int instr)
+{
+	if (instr != 0 && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
+	    instr != FTS_NOINSTR && instr != FTS_SKIP) {
+		errno = EINVAL;
+		return (1);
+	}
+	p->fts_instr = instr;
+	return (0);
+}
+
+FTSENT * FTSCALL
+nt_fts_children(FTS *sp, int instr)
+{
+	FTSENT *p;
+
+	if (instr != 0 && instr != FTS_NAMEONLY) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	/* Set current node pointer. */
+	p = sp->fts_cur;
+
+	/*
+	 * Errno set to 0 so user can distinguish empty directory from
+	 * an error.
+	 */
+	errno = 0;
+
+	/* Fatal errors stop here. */
+	if (ISSET(FTS_STOP))
+		return (NULL);
+
+	/* Return logical hierarchy of user's arguments. */
+	if (p->fts_info == FTS_INIT)
+		return (p->fts_link);
+
+	/*
+	 * If not a directory being visited in pre-order, stop here.  Could
+	 * allow FTS_DNR, assuming the user has fixed the problem, but the
+	 * same effect is available with FTS_AGAIN.
+	 */
+	if (p->fts_info != FTS_D /* && p->fts_info != FTS_DNR */)
+		return (NULL);
+
+	/* Free up any previous child list. */
+	if (sp->fts_child != NULL) {
+		fts_lfree(sp->fts_child);
+		sp->fts_child = NULL; /* (bird - double free for _open(".") failure in original) */
+	}
+
+	/* NT: Some BSD utility sets FTS_NAMEONLY? We don't really need this
+	       optimization, but since it only hurts that utility, it can stay.  */
+	if (instr == FTS_NAMEONLY) {
+		assert(0); /* don't specify FTS_NAMEONLY on NT. */
+		SET(FTS_NAMEONLY);
+		instr = BNAMES;
+	} else
+		instr = BCHILD;
+
+	return (sp->fts_child = fts_build(sp, instr));
+}
+
+#ifndef fts_get_clientptr
+#error "fts_get_clientptr not defined"
+#endif
+
+void *
+(FTSCALL fts_get_clientptr)(FTS *sp)
+{
+
+	return (fts_get_clientptr(sp));
+}
+
+#ifndef fts_get_stream
+#error "fts_get_stream not defined"
+#endif
+
+FTS *
+(FTSCALL fts_get_stream)(FTSENT *p)
+{
+	return (fts_get_stream(p));
+}
+
+void FTSCALL
+nt_fts_set_clientptr(FTS *sp, void *clientptr)
+{
+
+	sp->fts_clientptr = clientptr;
+}
+
+/*
+ * This is the tricky part -- do not casually change *anything* in here.  The
+ * idea is to build the linked list of entries that are used by fts_children
+ * and fts_read.  There are lots of special cases.
+ *
+ * The real slowdown in walking the tree is the stat calls.  If FTS_NOSTAT is
+ * set and it's a physical walk (so that symbolic links can't be directories),
+ * we can do things quickly.  First, if it's a 4.4BSD file system, the type
+ * of the file is in the directory entry.  Otherwise, we assume that the number
+ * of subdirectories in a node is equal to the number of links to the parent.
+ * The former skips all stat calls.  The latter skips stat calls in any leaf
+ * directories and for any files after the subdirectories in the directory have
+ * been found, cutting the stat calls by about 2/3.
+ *
+ * NT: We do not do any link counting or stat avoiding, which invalidates the
+ *     above warnings.  This function is very simple for us.
+ */
+static FTSENT *
+fts_build(FTS *sp, int type)
+{
+	BirdDirEntryW_T *dp;
+	FTSENT *p, *cur;
+	FTSENT * volatile head,* volatile *tailp; /* volatile is to prevent aliasing trouble */
+	DIR *dirp;
+	int saved_errno, doadjust, doadjust_utf16;
+	long level;
+	size_t len, cwcdir, maxlen, cwcmax, nitems;
+	unsigned fDirOpenFlags;
+
+	/* Set current node pointer. */
+	cur = sp->fts_cur;
+
+	/*
+	 * Open the directory for reading.  If this fails, we're done.
+	 * If being called from fts_read, set the fts_info field.
+	 *
+	 * NT: We do a two stage open so we can keep the directory handle around
+	 *     after we've enumerated the directory.  The dir handle is used by
+	 *     us here and by the API users to more efficiently and safely open
+	 *     members of the directory.
+	 */
+	fDirOpenFlags = BIRDDIR_F_EXTRA_INFO | BIRDDIR_F_KEEP_HANDLE;
+	if (cur->fts_dirfd == INVALID_HANDLE_VALUE) {
+		if (cur->fts_parent->fts_dirfd != INVALID_HANDLE_VALUE) {
+			/* (This works fine for symlinks too, since we follow them.) */
+			cur->fts_dirfd = birdOpenFileExW(cur->fts_parent->fts_dirfd,
+			                                 cur->fts_wcsname,
+			                                 FILE_READ_DATA | SYNCHRONIZE,
+			                                 FILE_ATTRIBUTE_NORMAL,
+			                                 FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+			                                 FILE_OPEN,
+			                                 FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+			                                 OBJ_CASE_INSENSITIVE);
+		} else {
+			cur->fts_dirfd = birdOpenFileW(cur->fts_wcsaccpath,
+			                               FILE_READ_DATA | SYNCHRONIZE,
+			                               FILE_ATTRIBUTE_NORMAL,
+			                               FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+			                               FILE_OPEN,
+			                               FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+			                               OBJ_CASE_INSENSITIVE);
+		}
+		if (cur->fts_dirfd != INVALID_HANDLE_VALUE) { /* likely */ }
+		else goto l_open_err;
+
+	} else {
+		fDirOpenFlags |= BIRDDIR_F_RESTART_SCAN;
+	}
+#ifdef FTS_WITH_DIRHANDLE_REUSE
+	dirp = birdDirOpenFromHandleWithReuse(&((struct _fts_private *)sp)->dirhandle, cur->fts_dirfd, NULL, 
+					      fDirOpenFlags | BIRDDIR_F_STATIC_ALLOC);
+#else
+	dirp = birdDirOpenFromHandle(cur->fts_dirfd, NULL, fDirOpenFlags);
+#endif
+	if (dirp == NULL) {
+l_open_err:
+		if (type == BREAD) {
+			cur->fts_info = FTS_DNR;
+			cur->fts_errno = errno;
+		}
+		return (NULL);
+	}
+
+	/*
+	 * Figure out the max file name length that can be stored in the
+	 * current path -- the inner loop allocates more path as necessary.
+	 * We really wouldn't have to do the maxlen calculations here, we
+	 * could do them in fts_read before returning the path, but it's a
+	 * lot easier here since the length is part of the dirent structure.
+	 */
+	if (sp->fts_options & FTS_NO_ANSI) {
+		len = 0;
+		maxlen = 0x10000;
+	} else {
+		len = NAPPEND(cur);
+		len++;
+		maxlen = sp->fts_pathlen - len;
+	}
+
+	cwcdir = NAPPENDW(cur);
+	cwcdir++;
+	cwcmax = sp->fts_cwcpath - len;
+
+	level = cur->fts_level + 1;
+
+	/* Read the directory, attaching each entry to the `link' pointer. */
+	doadjust = doadjust_utf16 = 0;
+	nitems = 0;
+	head = NULL;
+	tailp = &head;
+	while ((dp = birdDirReadW(dirp)) != NULL) {
+		if (ISSET(FTS_SEEDOT) || !ISDOT(dp->d_name))  {
+			/* assume dirs have two or more entries */
+		} else {
+			continue;
+		}
+
+		if ((p = fts_alloc_utf16(sp, dp->d_name, dp->d_namlen)) != NULL) {
+			/* likely */
+		} else {
+			goto mem1;
+		}
+
+		/* include space for NUL */
+		if (p->fts_namelen < maxlen && p->fts_cwcname < cwcmax) {
+		    /* likely */
+		} else {
+			void *oldaddr = sp->fts_path;
+			wchar_t *oldwcspath = sp->fts_wcspath;
+			if (fts_palloc(sp,
+			               p->fts_namelen >= maxlen ? len + p->fts_namelen + 1 : 0,
+			               p->fts_cwcname >= cwcmax ? cwcdir + p->fts_cwcname + 1 : 0)) {
+mem1:
+				/*
+				 * No more memory for path or structures.  Save
+				 * errno, free up the current structure and the
+				 * structures already allocated.
+				 */
+				saved_errno = errno;
+				if (p)
+					free(p);
+				fts_lfree(head);
+#ifndef FTS_WITH_DIRHANDLE_REUSE
+				birdDirClose(dirp);
+#endif
+				birdCloseFile(cur->fts_dirfd);
+				cur->fts_dirfd = INVALID_HANDLE_VALUE;
+				cur->fts_info = FTS_ERR;
+				SET(FTS_STOP);
+				errno = saved_errno;
+				return (NULL);
+			}
+			/* Did realloc() change the pointer? */
+			doadjust       |= oldaddr != sp->fts_path;
+			doadjust_utf16 |= oldwcspath != sp->fts_wcspath;
+			maxlen = sp->fts_pathlen - len;
+			cwcmax = sp->fts_cwcpath - cwcdir;
+		}
+
+		p->fts_level = level;
+		p->fts_parent = sp->fts_cur;
+		p->fts_pathlen = len + p->fts_namelen;
+		p->fts_cwcpath = cwcdir + p->fts_cwcname;
+		p->fts_accpath = p->fts_path;
+		p->fts_wcsaccpath = p->fts_wcspath;
+		p->fts_stat = dp->d_stat;
+		p->fts_info = fts_process_stats(p, &dp->d_stat);
+
+		/* We walk in directory order so "ls -f" doesn't get upset. */
+		p->fts_link = NULL;
+		*tailp = p;
+		tailp = &p->fts_link;
+		++nitems;
+	}
+
+#ifndef FTS_WITH_DIRHANDLE_REUSE
+	birdDirClose(dirp);
+#endif
+
+	/*
+	 * If realloc() changed the address of the path, adjust the
+	 * addresses for the rest of the tree and the dir list.
+	 */
+	if (doadjust)
+		fts_padjust(sp, head);
+	if (doadjust_utf16)
+		fts_padjustw(sp, head);
+
+	/* If didn't find anything, return NULL. */
+	if (!nitems) {
+		if (type == BREAD)
+			cur->fts_info = FTS_DP;
+		return (NULL);
+	}
+
+	/* Sort the entries. */
+	if (sp->fts_compar && nitems > 1)
+		head = fts_sort(sp, head, nitems);
+	return (head);
+}
+
+
+/**
+ * @note Only used on NT with input arguments, FTS_AGAIN, and links that needs
+ *  	 following.  On link information is generally retrieved during directory
+ *  	 enumeration on NT, in line with it's DOS/OS2/FAT API heritage.
+ */
+static int
+fts_stat(FTS *sp, FTSENT *p, int follow, HANDLE dfd)
+{
+	int saved_errno;
+	const wchar_t *wcspath;
+
+	if (dfd == INVALID_HANDLE_VALUE) {
+		wcspath = p->fts_wcsaccpath;
+	} else {
+		wcspath = p->fts_wcsname;
+	}
+
+	/*
+	 * If doing a logical walk, or application requested FTS_FOLLOW, do
+	 * a stat(2).  If that fails, check for a non-existent symlink.  If
+	 * fail, set the errno from the stat call.
+	 */
+	if (ISSET(FTS_LOGICAL) || follow) {
+		if (birdStatAtW(dfd, wcspath, &p->fts_stat, 1 /*fFollowLink*/)) {
+			saved_errno = errno;
+			if (birdStatAtW(dfd, wcspath, &p->fts_stat, 0 /*fFollowLink*/)) {
+				p->fts_errno = saved_errno;
+				goto err;
+			}
+			errno = 0;
+			if (S_ISLNK(p->fts_stat.st_mode))
+				return (FTS_SLNONE);
+		}
+	} else if (birdStatAtW(dfd, wcspath, &p->fts_stat, 0 /*fFollowLink*/)) {
+		p->fts_errno = errno;
+err:		memset(&p->fts_stat, 0, sizeof(struct stat));
+		return (FTS_NS);
+	}
+	return fts_process_stats(p, &p->fts_stat);
+}
+
+/* Shared between fts_stat and fts_build. */
+static int 
+fts_process_stats(FTSENT *p, BirdStat_T const *sbp)
+{
+	if (S_ISDIR(sbp->st_mode)) {
+		FTSENT *t;
+		fts_dev_t dev;
+		fts_ino_t ino;
+
+		/*
+		 * Set the device/inode.  Used to find cycles and check for
+		 * crossing mount points.  Also remember the link count, used
+		 * in fts_build to limit the number of stat calls.  It is
+		 * understood that these fields are only referenced if fts_info
+		 * is set to FTS_D.
+		 */
+		dev = p->fts_dev = sbp->st_dev;
+		ino = p->fts_ino = sbp->st_ino;
+		p->fts_nlink = sbp->st_nlink;
+
+		if (ISDOT(p->fts_wcsname))
+			return (FTS_DOT);
+
+		/*
+		 * Cycle detection is done by brute force when the directory
+		 * is first encountered.  If the tree gets deep enough or the
+		 * number of symbolic links to directories is high enough,
+		 * something faster might be worthwhile.
+		 */
+		for (t = p->fts_parent;
+		    t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
+			if (ino == t->fts_ino && dev == t->fts_dev) {
+				p->fts_cycle = t;
+				return (FTS_DC);
+			}
+		return (FTS_D);
+	}
+	if (S_ISLNK(sbp->st_mode))
+		return (FTS_SL);
+	if (S_ISREG(sbp->st_mode))
+		return (FTS_F);
+	return (FTS_DEFAULT);
+}
+
+/*
+ * The comparison function takes pointers to pointers to FTSENT structures.
+ * Qsort wants a comparison function that takes pointers to void.
+ * (Both with appropriate levels of const-poisoning, of course!)
+ * Use a trampoline function to deal with the difference.
+ */
+static int
+fts_compar(const void *a, const void *b)
+{
+	FTS *parent;
+
+	parent = (*(const FTSENT * const *)a)->fts_fts;
+	return (*parent->fts_compar)(a, b);
+}
+
+static FTSENT *
+fts_sort(FTS *sp, FTSENT *head, size_t nitems)
+{
+	FTSENT **ap, *p;
+
+	/*
+	 * Construct an array of pointers to the structures and call qsort(3).
+	 * Reassemble the array in the order returned by qsort.  If unable to
+	 * sort for memory reasons, return the directory entries in their
+	 * current order.  Allocate enough space for the current needs plus
+	 * 40 so don't realloc one entry at a time.
+	 */
+	if (nitems > sp->fts_nitems) {
+		void *ptr;
+		sp->fts_nitems = nitems + 40;
+		ptr = realloc(sp->fts_array, sp->fts_nitems * sizeof(FTSENT *));
+		if (ptr != NULL) {
+			sp->fts_array = ptr;
+		} else {
+			free(sp->fts_array);
+			sp->fts_array = NULL;
+			sp->fts_nitems = 0;
+			return (head);
+		}
+	}
+	for (ap = sp->fts_array, p = head; p; p = p->fts_link)
+		*ap++ = p;
+	qsort(sp->fts_array, nitems, sizeof(FTSENT *), fts_compar);
+	for (head = *(ap = sp->fts_array); --nitems; ++ap)
+		ap[0]->fts_link = ap[1];
+	ap[0]->fts_link = NULL;
+	return (head);
+}
+
+static FTSENT *
+fts_alloc(FTS *sp, char const *name, size_t namelen, wchar_t const *wcsname, size_t cwcname)
+{
+	struct _fts_private *priv = (struct _fts_private *)sp;
+	FTSENT *p;
+	size_t len;
+#ifdef FTS_WITH_ALLOC_CACHE
+	size_t aligned;
+	size_t idx;
+#endif
+
+#if defined(FTS_WITH_STATISTICS) && defined(FTS_WITH_ALLOC_CACHE)
+	priv->allocs++;
+#endif
+	/*
+	 * The file name is a variable length array.  Allocate the FTSENT
+	 * structure and the file name.
+	 */
+	len = sizeof(FTSENT) + (cwcname + 1) * sizeof(wchar_t);
+	if (!(sp->fts_options & FTS_NO_ANSI))
+		len += namelen + 1;
+
+	/*
+	 * To speed things up we cache entries.  This code is a little insane,
+	 * but that's preferable to slow code.
+	 */
+#ifdef FTS_WITH_ALLOC_CACHE
+	aligned = (len + FTS_ALIGN_FTSENT + 1) & ~(size_t)(FTS_ALIGN_FTSENT - 1);
+	idx     = ((aligned - sizeof(FTSENT)) >> FTS_FREE_BUCKET_SHIFT);
+	if (   idx < FTS_NUM_FREE_BUCKETS
+	    && (p = priv->freebuckets[idx].head)
+	    && p->fts_alloc_size >= len) {
+		priv->freebuckets[idx].head = p->fts_link;
+		priv->numfree--;
+# ifdef FTS_WITH_STATISTICS
+		priv->hits++;
+# endif
+
+	} else {
+# ifdef FTS_WITH_STATISTICS
+		priv->misses++;
+# endif
+		p = malloc(aligned);
+		if (p) {
+			p->fts_alloc_size = (unsigned)aligned;
+		} else {
+			nt_fts_free_alloc_cache(sp);
+			p = malloc(len);
+			if (!p)
+				return NULL;
+			p->fts_alloc_size = (unsigned)len;
+		}
+	}
+#else  /* !FTS_WITH_ALLOC_CACHE */
+	p = malloc(len);
+	if (p) {
+		p->fts_alloc_size = (unsigned)len;
+	} else {
+		return NULL;
+	}
+#endif /* !FTS_WITH_ALLOC_CACHE */
+
+	/* Copy the names and guarantee NUL termination. */
+	p->fts_wcsname = (wchar_t *)(p + 1);
+	memcpy(p->fts_wcsname, wcsname, cwcname * sizeof(wchar_t));
+	p->fts_wcsname[cwcname] = '\0';
+	p->fts_cwcname = cwcname;
+	if (!(sp->fts_options & FTS_NO_ANSI)) {
+		p->fts_name = (char *)(p->fts_wcsname + cwcname + 1);
+		memcpy(p->fts_name, name, namelen);
+		p->fts_name[namelen] = '\0';
+		p->fts_namelen = namelen;
+	} else {
+		p->fts_name = NULL;
+		p->fts_namelen = 0;
+	}
+
+	p->fts_path = sp->fts_path;
+	p->fts_wcspath = sp->fts_wcspath;
+	p->fts_statp = &p->fts_stat;
+	p->fts_errno = 0;
+	p->fts_flags = 0;
+	p->fts_instr = FTS_NOINSTR;
+	p->fts_number = 0;
+	p->fts_pointer = NULL;
+	p->fts_fts = sp;
+	p->fts_dirfd = INVALID_HANDLE_VALUE;
+	return (p);
+}
+
+
+/**
+ * Converts the ANSI name to UTF-16 and calls fts_alloc.
+ *
+ * @returns Pointer to allocated and mostly initialized FTSENT structure on
+ *          success.  NULL on failure, caller needs to record it.
+ * @param   sp                  Pointer to FTS instance.
+ * @param   name                The ANSI name.
+ * @param   namelen             The ANSI name length.
+ */
+static FTSENT *
+fts_alloc_ansi(FTS *sp, char const *name, size_t namelen)
+{
+	MY_UNICODE_STRING UniStr;
+	MY_ANSI_STRING AnsiStr;
+	MY_NTSTATUS rcNt;
+	FTSENT *pRet;
+
+	UniStr.Buffer = NULL;
+	UniStr.MaximumLength = UniStr.Length = 0;
+
+	AnsiStr.Buffer = (char *)name;
+	AnsiStr.Length = AnsiStr.MaximumLength = (USHORT)namelen;
+
+	rcNt = g_pfnRtlAnsiStringToUnicodeString(&UniStr, &AnsiStr, TRUE /*fAllocate*/);
+	if (NT_SUCCESS(rcNt)) {
+		pRet = fts_alloc(sp, name, namelen, UniStr.Buffer, UniStr.Length / sizeof(wchar_t));
+		HeapFree(GetProcessHeap(), 0, UniStr.Buffer);
+	} else {
+		pRet = NULL;
+	}
+	return pRet;
+}
+
+
+/**
+ * Converts the UTF-16 name to ANSI (if necessary) and calls fts_alloc.
+ *
+ * @returns Pointer to allocated and mostly initialized FTSENT structure on
+ *          success.  NULL on failure, caller needs to record it.
+ * @param   sp                  Pointer to the FTS instance.
+ * @param   wcsname             The UTF-16 name.
+ * @param   cwcname		The UTF-16 name length.
+ */
+static FTSENT *
+fts_alloc_utf16(FTS *sp, wchar_t const *wcsname, size_t cwcname)
+{
+	FTSENT *pRet;
+
+	if (sp->fts_options & FTS_NO_ANSI) {
+		pRet = fts_alloc(sp, NULL, 0, wcsname, cwcname);
+	} else {
+		MY_UNICODE_STRING UniStr;
+		MY_ANSI_STRING AnsiStr;
+		MY_NTSTATUS rcNt;
+
+		UniStr.Buffer = (wchar_t *)wcsname;
+		UniStr.MaximumLength = UniStr.Length = (USHORT)(cwcname * sizeof(wchar_t));
+
+		AnsiStr.Buffer = NULL;
+		AnsiStr.Length = AnsiStr.MaximumLength = 0;
+
+		rcNt = g_pfnRtlUnicodeStringToAnsiString(&AnsiStr, &UniStr, TRUE /*fAllocate*/);
+		if (NT_SUCCESS(rcNt)) {
+			pRet = fts_alloc(sp, AnsiStr.Buffer, AnsiStr.Length, wcsname, cwcname);
+			HeapFree(GetProcessHeap(), 0, AnsiStr.Buffer);
+		} else {
+			pRet = NULL;
+		}
+	}
+	return pRet;
+}
+
+
+/**
+ * Frees up the FTSENT allocation cache.
+ *
+ * Used by nt_fts_close, but also called by fts_alloc on alloc failure.
+ *
+ * @param   sp                  Pointer to the FTS instance.
+ */
+static void nt_fts_free_alloc_cache(FTS *sp)
+{
+#ifdef FTS_WITH_ALLOC_CACHE
+	struct _fts_private *priv = (struct _fts_private *)sp;
+	unsigned i = K_ELEMENTS(priv->freebuckets);
+	while (i-- > 0) {
+		FTSENT *cur = priv->freebuckets[i].head;
+		priv->freebuckets[i].head = NULL;
+		while (cur) {
+			FTSENT *freeit = cur;
+			cur = cur->fts_link;
+			free(freeit);
+		}
+	}
+	priv->numfree = 0;
+#else
+	(void)sp;
+#endif
+}
+
+
+static void
+fts_lfree(FTSENT *head)
+{
+	FTSENT *p;
+
+	/* Free a linked list of structures. */
+	while ((p = head)) {
+		head = head->fts_link;
+		assert(p->fts_dirfd == INVALID_HANDLE_VALUE);
+		free(p);
+	}
+}
+
+/*
+ * Allow essentially unlimited paths; find, rm, ls should all work on any tree.
+ * Most systems will allow creation of paths much longer than MAXPATHLEN, even
+ * though the kernel won't resolve them.  Add the size (not just what's needed)
+ * plus 256 bytes so don't realloc the path 2 bytes at a time.
+ */
+static int
+fts_palloc(FTS *sp, size_t more, size_t cwcmore)
+{
+	void *ptr;
+
+	/** @todo Isn't more and cwcmore minimum buffer sizes rather than what needs
+	 *  	  to be added to the buffer??  This code makes no sense when looking at
+	 *  	  the way the caller checks things out! */
+
+	if (more) {
+		sp->fts_pathlen += more + 256;
+		ptr = realloc(sp->fts_path, sp->fts_pathlen);
+		if (ptr) {
+			sp->fts_path = ptr;
+		} else {
+			free(sp->fts_path);
+			sp->fts_path = NULL;
+			free(sp->fts_wcspath);
+			sp->fts_wcspath = NULL;
+			return 1;
+		}
+	}
+
+	if (cwcmore) {
+		sp->fts_cwcpath += cwcmore + 256;
+		ptr = realloc(sp->fts_wcspath, sp->fts_cwcpath);
+		if (ptr) {
+			sp->fts_wcspath = ptr;
+		} else {
+			free(sp->fts_path);
+			sp->fts_path = NULL;
+			free(sp->fts_wcspath);
+			sp->fts_wcspath = NULL;
+			return 1;
+		}
+	}
+	return 0;
+}
+
+/*
+ * When the path is realloc'd, have to fix all of the pointers in structures
+ * already returned.
+ */
+static void
+fts_padjust(FTS *sp, FTSENT *head)
+{
+	FTSENT *p;
+	char *addr = sp->fts_path;
+
+#define	ADJUST(p) do {							\
+	if ((p)->fts_accpath != (p)->fts_name) {			\
+		(p)->fts_accpath =					\
+		    (char *)addr + ((p)->fts_accpath - (p)->fts_path);	\
+	}								\
+	(p)->fts_path = addr;						\
+} while (0)
+	/* Adjust the current set of children. */
+	for (p = sp->fts_child; p; p = p->fts_link)
+		ADJUST(p);
+
+	/* Adjust the rest of the tree, including the current level. */
+	for (p = head; p->fts_level >= FTS_ROOTLEVEL;) {
+		ADJUST(p);
+		p = p->fts_link ? p->fts_link : p->fts_parent;
+	}
+}
+
+/*
+ * When the UTF-16 path is realloc'd, have to fix all of the pointers in
+ * structures already returned.
+ */
+static void
+fts_padjustw(FTS *sp, FTSENT *head)
+{
+	FTSENT *p;
+	wchar_t *addr = sp->fts_wcspath;
+
+#define	ADJUSTW(p) \
+		do {	\
+			if ((p)->fts_wcsaccpath != (p)->fts_wcsname) \
+				(p)->fts_wcsaccpath = addr + ((p)->fts_wcsaccpath - (p)->fts_wcspath); \
+			(p)->fts_wcspath = addr;						\
+		} while (0)
+
+	/* Adjust the current set of children. */
+	for (p = sp->fts_child; p; p = p->fts_link)
+		ADJUSTW(p);
+
+	/* Adjust the rest of the tree, including the current level. */
+	for (p = head; p->fts_level >= FTS_ROOTLEVEL;) {
+		ADJUSTW(p);
+		p = p->fts_link ? p->fts_link : p->fts_parent;
+	}
+}
+
+static size_t
+fts_maxarglen(char * const *argv)
+{
+	size_t len, max;
+
+	for (max = 0; *argv; ++argv)
+		if ((len = strlen(*argv)) > max)
+			max = len;
+	return (max + 1);
+}
+
+/** Returns the max string size (including term). */
+static size_t
+fts_maxarglenw(wchar_t * const *argv)
+{
+	size_t max = 0;
+	for (; *argv; ++argv) {
+		size_t len = wcslen(*argv);
+		if (len > max)
+			max = len;
+	}
+	return max + 1;
+}
+
diff --git a/src/lib/nt/fts-nt.h b/src/lib/nt/fts-nt.h
new file mode 100644
index 0000000..3d014d5
--- /dev/null
+++ b/src/lib/nt/fts-nt.h
@@ -0,0 +1,188 @@
+/* $Id: fts-nt.h 3535 2021-12-20 23:32:28Z bird $ */
+/** @file
+ * Header for the NT port of BSD fts.h.
+ *
+ * @copyright   Copyright (c) 1989, 1993 The Regents of the University of California.  All rights reserved.
+ * @copyright   NT modifications Copyright (C) 2016 knut st. osmundsen <bird-klibc-spam-xiv@anduin.net>
+ * @licenses    BSD3
+ */
+
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)fts.h	8.3 (Berkeley) 8/14/94
+ * $FreeBSD$
+ *
+ */
+
+#ifndef	INCLUDED_FTS_NT_H
+#define	INCLUDED_FTS_NT_H
+
+#include <sys/types.h>
+#include <stdint.h>
+#include "ntstat.h" /* ensure correct stat structure */
+
+typedef uint64_t fts_dev_t;
+typedef uint64_t fts_ino_t;
+typedef uint32_t fts_nlink_t;
+#ifdef _WINNT_
+typedef HANDLE fts_fd_t;
+# define NT_FTS_INVALID_HANDLE_VALUE	INVALID_HANDLE_VALUE
+#else
+typedef void * fts_fd_t;
+# define NT_FTS_INVALID_HANDLE_VALUE	((void *)~(uintptr_t)0)
+#endif
+#define FTSCALL __cdecl
+
+typedef struct {
+	struct _ftsent *fts_cur;	/* current node */
+	struct _ftsent *fts_child;	/* linked list of children */
+	struct _ftsent **fts_array;	/* sort array */
+	fts_dev_t fts_dev;		/* starting device # */
+	char *fts_path;			/* path for this descent */
+	size_t fts_pathlen;		/* sizeof(path) */
+	wchar_t *fts_wcspath;		/* NT: UTF-16 path for this descent. */
+	size_t fts_cwcpath;		/* NT: size of fts_wcspath buffer */
+	size_t fts_nitems;		/* elements in the sort array */
+	int (FTSCALL *fts_compar)	/* compare function */
+	    (const struct _ftsent * const *, const struct _ftsent * const *);
+
+#define	FTS_COMFOLLOW	0x001		/* follow command line symlinks */
+#define	FTS_LOGICAL	0x002		/* logical walk */
+#define	FTS_NOCHDIR	0x004		/* don't change directories */
+#define	FTS_NOSTAT	0x008		/* don't get stat info */
+#define	FTS_PHYSICAL	0x010		/* physical walk */
+#define	FTS_SEEDOT	0x020		/* return dot and dot-dot */
+#define	FTS_XDEV	0x040		/* don't cross devices */
+#if 0 /* No whiteout on NT. */
+#define	FTS_WHITEOUT	0x080		/* return whiteout information */
+#endif
+#define FTS_CWDFD       0x100           /* For gnulib fts compatibility, enables fts_cwd_fd. */
+#define FTS_TIGHT_CYCLE_CHECK 0x200     /* Ignored currently */
+#define FTS_NO_ANSI     0x40000000      /* NT: No ansi name or access path. */
+#define	FTS_OPTIONMASK	0x400003ff	/* valid user option mask */
+
+#define	FTS_NAMEONLY	0x10000		/* (private) child names only */
+#define	FTS_STOP	0x20000		/* (private) unrecoverable error */
+	int fts_options;		/* fts_open options, global flags */
+	int fts_cwd_fd;                 /* FTS_CWDFD: AT_FDCWD or a virtual CWD file descriptor. */
+	void *fts_clientptr;		/* thunk for sort function */
+} FTS;
+
+typedef struct _ftsent {
+	struct _ftsent *fts_cycle;	/* cycle node */
+	struct _ftsent *fts_parent;	/* parent directory */
+	struct _ftsent *fts_link;	/* next file in directory */
+	int64_t fts_number;		/* local numeric value */
+#define	fts_bignum	fts_number	/* XXX non-std, should go away */
+	void *fts_pointer;		/* local address value */
+	char *fts_accpath;		/* access path */
+	wchar_t *fts_wcsaccpath;	/* NT: UTF-16 access path */
+	char *fts_path;			/* root path */
+	wchar_t *fts_wcspath;		/* NT: UTF-16 root path */
+	int fts_errno;			/* errno for this node */
+	size_t fts_alloc_size;		/* internal - size of the allocation for this entry. */
+	fts_fd_t fts_dirfd;		/* NT: Handle to the directory (NT_FTS_)INVALID_HANDLE_VALUE if not valid */
+	size_t fts_pathlen;		/* strlen(fts_path) */
+	size_t fts_cwcpath;		/* NT: length of fts_wcspath. */
+	size_t fts_namelen;		/* strlen(fts_name) */
+	size_t fts_cwcname;		/* NT: length of fts_wcsname. */
+
+	fts_ino_t fts_ino;		/* inode */
+	fts_dev_t fts_dev;		/* device */
+	fts_nlink_t fts_nlink;		/* link count */
+
+#define	FTS_ROOTPARENTLEVEL	-1
+#define	FTS_ROOTLEVEL		 0
+	long fts_level;			/* depth (-1 to N) */
+
+#define	FTS_D		 1		/* preorder directory */
+#define	FTS_DC		 2		/* directory that causes cycles */
+#define	FTS_DEFAULT	 3		/* none of the above */
+#define	FTS_DNR		 4		/* unreadable directory */
+#define	FTS_DOT		 5		/* dot or dot-dot */
+#define	FTS_DP		 6		/* postorder directory */
+#define	FTS_ERR		 7		/* error; errno is set */
+#define	FTS_F		 8		/* regular file */
+#define	FTS_INIT	 9		/* initialized only */
+#define	FTS_NS		10		/* stat(2) failed */
+#define	FTS_NSOK	11		/* no stat(2) requested */
+#define	FTS_SL		12		/* symbolic link */
+#define	FTS_SLNONE	13		/* symbolic link without target */
+#define	FTS_W		14		/* whiteout object */
+	int fts_info;			/* user status for FTSENT structure */
+
+#define	FTS_DONTCHDIR	 0x01		/* don't chdir .. to the parent */
+#define	FTS_SYMFOLLOW	 0x02		/* followed a symlink to get here */
+#define	FTS_ISW		 0x04		/* this is a whiteout object */
+	unsigned fts_flags;		/* private flags for FTSENT structure */
+
+#define	FTS_AGAIN	 1		/* read node again */
+#define	FTS_FOLLOW	 2		/* follow symbolic link */
+#define	FTS_NOINSTR	 3		/* no instructions */
+#define	FTS_SKIP	 4		/* discard node */
+	int fts_instr;			/* fts_set() instructions */
+
+	struct stat *fts_statp;		/* stat(2) information */
+	char *fts_name;			/* file name */
+	wchar_t *fts_wcsname;		/* NT: UTF-16 file name. */
+	FTS *fts_fts;			/* back pointer to main FTS */
+	BirdStat_T fts_stat;		/* NT: We always got stat info. */
+} FTSENT;
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+FTSENT	*FTSCALL nt_fts_children(FTS *, int);
+int	 FTSCALL nt_fts_close(FTS *);
+void	*FTSCALL nt_fts_get_clientptr(FTS *);
+#define	 fts_get_clientptr(fts)	((fts)->fts_clientptr)
+FTS	*FTSCALL nt_fts_get_stream(FTSENT *);
+#define	 fts_get_stream(ftsent)	((ftsent)->fts_fts)
+FTS	*FTSCALL nt_fts_open(char * const *, int, int (FTSCALL*)(const FTSENT * const *, const FTSENT * const *));
+FTS	*FTSCALL nt_fts_openw(wchar_t * const *, int, int (FTSCALL*)(const FTSENT * const *, const FTSENT * const *));
+FTSENT	*FTSCALL nt_fts_read(FTS *);
+int	 FTSCALL nt_fts_set(FTS *, FTSENT *, int);
+void	 FTSCALL nt_fts_set_clientptr(FTS *, void *);
+
+/* API mappings. */
+#define fts_children(a_pFts, a_iInstr)                  nt_fts_children(a_pFts, a_iInstr)
+#define fts_close(a_pFts)                               nt_fts_close(a_pFts)
+#define fts_open(a_papszArgs, a_fOptions, a_pfnCompare) nt_fts_open(a_papszArgs, a_fOptions, a_pfnCompare)
+#define fts_read(a_pFts)                                nt_fts_read(a_pFts)
+#define fts_set(a_pFts, a_pFtsEntry, a_iInstr)          nt_fts_set(a_pFts, a_pFtsEntry, a_iInstr)
+#define fts_set_clientptr(a_pFts, a_pvUser)             nt_fts_set_clientptr(a_pFts, a_pvUser)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !INCLUDED_FTS_NT_H */
+
diff --git a/src/lib/nt/kFsCache.c b/src/lib/nt/kFsCache.c
new file mode 100644
index 0000000..77c9655
--- /dev/null
+++ b/src/lib/nt/kFsCache.c
@@ -0,0 +1,4840 @@
+/* $Id: kFsCache.c 3381 2020-06-12 11:36:10Z bird $ */
+/** @file
+ * ntdircache.c - NT directory content cache.
+ */
+
+/*
+ * Copyright (c) 2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <k/kHlp.h>
+
+#include "nthlp.h"
+#include "ntstat.h"
+
+#include <stdio.h>
+#include <mbstring.h>
+#include <wchar.h>
+#ifdef _MSC_VER
+# include <intrin.h>
+#endif
+//#include <setjmp.h>
+//#include <ctype.h>
+
+
+//#include <Windows.h>
+//#include <winternl.h>
+
+#include "kFsCache.h"
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/** @def KFSCACHE_LOG2
+ * More logging. */
+#if 0
+# define KFSCACHE_LOG2(a) KFSCACHE_LOG(a)
+#else
+# define KFSCACHE_LOG2(a) do { } while (0)
+#endif
+
+/** The minimum time between a directory last populated time and its
+ * modification time for the cache to consider it up-to-date.
+ *
+ * This helps work around races between us reading a directory and someone else
+ * adding / removing files and directories to /from it.  Given that the
+ * effective time resolution typically is around 2000Hz these days, unless you
+ * use the new *TimePrecise API variants, there is plenty of room for a race
+ * here.
+ *
+ * The current value is 20ms in NT time units (100ns each), which translates
+ * to a 50Hz time update frequency. */
+#define KFSCACHE_MIN_LAST_POPULATED_VS_WRITE (20*1000*10)
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+/**
+ * Used by the code re-populating a directory.
+ */
+typedef struct KFSDIRREPOP
+{
+    /** The old papChildren array. */
+    PKFSOBJ    *papOldChildren;
+    /** Number of children in the array. */
+    KU32        cOldChildren;
+    /** The index into papOldChildren we expect to find the next entry.  */
+    KU32        iNextOldChild;
+    /** Add this to iNextOldChild . */
+    KI32        cNextOldChildInc;
+    /** Pointer to the cache (name changes). */
+    PKFSCACHE   pCache;
+} KFSDIRREPOP;
+/** Pointer to directory re-population data. */
+typedef KFSDIRREPOP *PKFSDIRREPOP;
+
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+static KBOOL kFsCacheRefreshObj(PKFSCACHE pCache, PKFSOBJ pObj, KFSLOOKUPERROR *penmError);
+
+
+/**
+ * Retains a reference to a cache object, internal version.
+ *
+ * @returns pObj
+ * @param   pObj                The object.
+ */
+K_INLINE PKFSOBJ kFsCacheObjRetainInternal(PKFSOBJ pObj)
+{
+    KU32 cRefs = ++pObj->cRefs;
+    kHlpAssert(cRefs < 16384);
+    K_NOREF(cRefs);
+    return pObj;
+}
+
+
+#ifndef NDEBUG
+
+/**
+ * Debug printing.
+ * @param   pszFormat           Debug format string.
+ * @param   ...                 Format argument.
+ */
+void kFsCacheDbgPrintfV(const char *pszFormat, va_list va)
+{
+    if (1)
+    {
+        DWORD const dwSavedErr = GetLastError();
+
+        fprintf(stderr, "debug: ");
+        vfprintf(stderr, pszFormat, va);
+
+        SetLastError(dwSavedErr);
+    }
+}
+
+
+/**
+ * Debug printing.
+ * @param   pszFormat           Debug format string.
+ * @param   ...                 Format argument.
+ */
+void kFsCacheDbgPrintf(const char *pszFormat, ...)
+{
+    if (1)
+    {
+        va_list va;
+        va_start(va, pszFormat);
+        kFsCacheDbgPrintfV(pszFormat, va);
+        va_end(va);
+    }
+}
+
+#endif /* !NDEBUG */
+
+
+
+/**
+ * Hashes a string.
+ *
+ * @returns 32-bit string hash.
+ * @param   pszString           String to hash.
+ */
+static KU32 kFsCacheStrHash(const char *pszString)
+{
+    /* This algorithm was created for sdbm (a public-domain reimplementation of
+       ndbm) database library. it was found to do well in scrambling bits,
+       causing better distribution of the keys and fewer splits. it also happens
+       to be a good general hashing function with good distribution. the actual
+       function is hash(i) = hash(i - 1) * 65599 + str[i]; what is included below
+       is the faster version used in gawk. [there is even a faster, duff-device
+       version] the magic constant 65599 was picked out of thin air while
+       experimenting with different constants, and turns out to be a prime.
+       this is one of the algorithms used in berkeley db (see sleepycat) and
+       elsewhere. */
+    KU32 uHash = 0;
+    KU32 uChar;
+    while ((uChar = (unsigned char)*pszString++) != 0)
+        uHash = uChar + (uHash << 6) + (uHash << 16) - uHash;
+    return uHash;
+}
+
+
+/**
+ * Hashes a string.
+ *
+ * @returns The string length.
+ * @param   pszString           String to hash.
+ * @param   puHash              Where to return the 32-bit string hash.
+ */
+static KSIZE kFsCacheStrHashEx(const char *pszString, KU32 *puHash)
+{
+    const char * const pszStart = pszString;
+    KU32 uHash = 0;
+    KU32 uChar;
+    while ((uChar = (unsigned char)*pszString) != 0)
+    {
+        uHash = uChar + (uHash << 6) + (uHash << 16) - uHash;
+        pszString++;
+    }
+    *puHash = uHash;
+    return pszString - pszStart;
+}
+
+
+/**
+ * Hashes a substring.
+ *
+ * @returns 32-bit substring hash.
+ * @param   pchString           Pointer to the substring (not terminated).
+ * @param   cchString           The length of the substring.
+ */
+static KU32 kFsCacheStrHashN(const char *pchString, KSIZE cchString)
+{
+    KU32 uHash = 0;
+    while (cchString-- > 0)
+    {
+        KU32 uChar = (unsigned char)*pchString++;
+        uHash = uChar + (uHash << 6) + (uHash << 16) - uHash;
+    }
+    return uHash;
+}
+
+
+/**
+ * Hashes a UTF-16 string.
+ *
+ * @returns The string length in wchar_t units.
+ * @param   pwszString          String to hash.
+ * @param   puHash              Where to return the 32-bit string hash.
+ */
+static KSIZE kFsCacheUtf16HashEx(const wchar_t *pwszString, KU32 *puHash)
+{
+    const wchar_t * const pwszStart = pwszString;
+    KU32 uHash = 0;
+    KU32 uChar;
+    while ((uChar = *pwszString) != 0)
+    {
+        uHash = uChar + (uHash << 6) + (uHash << 16) - uHash;
+        pwszString++;
+    }
+    *puHash = uHash;
+    return pwszString - pwszStart;
+}
+
+
+/**
+ * Hashes a UTF-16 substring.
+ *
+ * @returns 32-bit substring hash.
+ * @param   pwcString           Pointer to the substring (not terminated).
+ * @param   cchString           The length of the substring (in wchar_t's).
+ */
+static KU32 kFsCacheUtf16HashN(const wchar_t *pwcString, KSIZE cwcString)
+{
+    KU32 uHash = 0;
+    while (cwcString-- > 0)
+    {
+        KU32 uChar = *pwcString++;
+        uHash = uChar + (uHash << 6) + (uHash << 16) - uHash;
+    }
+    return uHash;
+}
+
+
+/**
+ * For use when kFsCacheIAreEqualW hit's something non-trivial.
+ *
+ * @returns K_TRUE if equal, K_FALSE if different.
+ * @param   pwcName1            The first string.
+ * @param   pwcName2            The second string.
+ * @param   cwcName             The length of the two strings (in wchar_t's).
+ */
+KBOOL kFsCacheIAreEqualSlowW(const wchar_t *pwcName1, const wchar_t *pwcName2, KU16 cwcName)
+{
+    MY_UNICODE_STRING UniStr1 = { cwcName * sizeof(wchar_t), cwcName * sizeof(wchar_t), (wchar_t *)pwcName1 };
+    MY_UNICODE_STRING UniStr2 = { cwcName * sizeof(wchar_t), cwcName * sizeof(wchar_t), (wchar_t *)pwcName2 };
+    return g_pfnRtlEqualUnicodeString(&UniStr1, &UniStr2, TRUE /*fCaseInsensitive*/);
+}
+
+
+/**
+ * Compares two UTF-16 strings in a case-insensitive fashion.
+ *
+ * You would think we should be using _wscnicmp here instead, however it is
+ * locale dependent and defaults to ASCII upper/lower handling setlocale hasn't
+ * been called.
+ *
+ * @returns K_TRUE if equal, K_FALSE if different.
+ * @param   pwcName1            The first string.
+ * @param   pwcName2            The second string.
+ * @param   cwcName             The length of the two strings (in wchar_t's).
+ */
+K_INLINE KBOOL kFsCacheIAreEqualW(const wchar_t *pwcName1, const wchar_t *pwcName2, KU32 cwcName)
+{
+    while (cwcName > 0)
+    {
+        wchar_t wc1 = *pwcName1;
+        wchar_t wc2 = *pwcName2;
+        if (wc1 == wc2)
+        { /* not unlikely */ }
+        else if (  (KU16)wc1 < (KU16)0xc0 /* U+00C0 is the first upper/lower letter after 'z'. */
+                && (KU16)wc2 < (KU16)0xc0)
+        {
+            /* ASCII upper case. */
+            if ((KU16)wc1 - (KU16)0x61 < (KU16)26)
+                wc1 &= ~(wchar_t)0x20;
+            if ((KU16)wc2 - (KU16)0x61 < (KU16)26)
+                wc2 &= ~(wchar_t)0x20;
+            if (wc1 != wc2)
+                return K_FALSE;
+        }
+        else
+            return kFsCacheIAreEqualSlowW(pwcName1, pwcName2, (KU16)cwcName);
+
+        pwcName2++;
+        pwcName1++;
+        cwcName--;
+    }
+
+    return K_TRUE;
+}
+
+
+/**
+ * Looks for '..' in the path.
+ *
+ * @returns K_TRUE if '..' component found, K_FALSE if not.
+ * @param   pszPath             The path.
+ * @param   cchPath             The length of the path.
+ */
+static KBOOL kFsCacheHasDotDotA(const char *pszPath, KSIZE cchPath)
+{
+    const char *pchDot = (const char *)kHlpMemChr(pszPath, '.', cchPath);
+    while (pchDot)
+    {
+        if (pchDot[1] != '.')
+        {
+            pchDot++;
+            pchDot = (const char *)kHlpMemChr(pchDot, '.', &pszPath[cchPath] - pchDot);
+        }
+        else
+        {
+            char ch;
+            if (   (ch = pchDot[2]) != '\0'
+                && IS_SLASH(ch))
+            {
+                if (pchDot == pszPath)
+                    return K_TRUE;
+                ch = pchDot[-1];
+                if (   IS_SLASH(ch)
+                    || ch == ':')
+                    return K_TRUE;
+            }
+            pchDot = (const char *)kHlpMemChr(pchDot + 2, '.', &pszPath[cchPath] - pchDot - 2);
+        }
+    }
+
+    return K_FALSE;
+}
+
+
+/**
+ * Looks for '..' in the path.
+ *
+ * @returns K_TRUE if '..' component found, K_FALSE if not.
+ * @param   pwszPath            The path.
+ * @param   cwcPath             The length of the path (in wchar_t's).
+ */
+static KBOOL kFsCacheHasDotDotW(const wchar_t *pwszPath, KSIZE cwcPath)
+{
+    const wchar_t *pwcDot = wmemchr(pwszPath, '.', cwcPath);
+    while (pwcDot)
+    {
+        if (pwcDot[1] != '.')
+        {
+            pwcDot++;
+            pwcDot = wmemchr(pwcDot, '.', &pwszPath[cwcPath] - pwcDot);
+        }
+        else
+        {
+            wchar_t wch;
+            if (   (wch = pwcDot[2]) != '\0'
+                && IS_SLASH(wch))
+            {
+                if (pwcDot == pwszPath)
+                    return K_TRUE;
+                wch = pwcDot[-1];
+                if (   IS_SLASH(wch)
+                    || wch == ':')
+                    return K_TRUE;
+            }
+            pwcDot = wmemchr(pwcDot + 2, '.', &pwszPath[cwcPath] - pwcDot - 2);
+        }
+    }
+
+    return K_FALSE;
+}
+
+
+/**
+ * Creates an ANSI hash table entry for the given path.
+ *
+ * @returns The hash table entry or NULL if out of memory.
+ * @param   pCache              The hash
+ * @param   pFsObj              The resulting object.
+ * @param   pszPath             The path.
+ * @param   cchPath             The length of the path.
+ * @param   uHashPath           The hash of the path.
+ * @param   fAbsolute           Whether it can be refreshed using an absolute
+ *                              lookup or requires the slow treatment.
+ * @parma   idxMissingGen       The missing generation index.
+ * @param   idxHashTab          The hash table index of the path.
+ * @param   enmError            The lookup error.
+ */
+static PKFSHASHA kFsCacheCreatePathHashTabEntryA(PKFSCACHE pCache, PKFSOBJ pFsObj, const char *pszPath, KU32 cchPath,
+                                                 KU32 uHashPath, KU32 idxHashTab, BOOL fAbsolute, KU32 idxMissingGen,
+                                                 KFSLOOKUPERROR enmError)
+{
+    PKFSHASHA pHashEntry = (PKFSHASHA)kHlpAlloc(sizeof(*pHashEntry) + cchPath + 1);
+    if (pHashEntry)
+    {
+        pHashEntry->uHashPath       = uHashPath;
+        pHashEntry->cchPath         = (KU16)cchPath;
+        pHashEntry->fAbsolute       = fAbsolute;
+        pHashEntry->idxMissingGen   = (KU8)idxMissingGen;
+        pHashEntry->enmError        = enmError;
+        pHashEntry->pszPath         = (const char *)kHlpMemCopy(pHashEntry + 1, pszPath, cchPath + 1);
+        if (pFsObj)
+        {
+            pHashEntry->pFsObj      = kFsCacheObjRetainInternal(pFsObj);
+            pHashEntry->uCacheGen   = pFsObj->bObjType != KFSOBJ_TYPE_MISSING
+                                    ? pCache->auGenerations[       pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                                    : pCache->auGenerationsMissing[pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN];
+            pFsObj->cPathHashRefs += 1; // for debugging
+        }
+        else
+        {
+            pHashEntry->pFsObj      = NULL;
+            if (enmError != KFSLOOKUPERROR_UNSUPPORTED)
+                pHashEntry->uCacheGen = pCache->auGenerationsMissing[idxMissingGen];
+            else
+                pHashEntry->uCacheGen = KFSOBJ_CACHE_GEN_IGNORE;
+        }
+
+        pHashEntry->pNext = pCache->apAnsiPaths[idxHashTab];
+        pCache->apAnsiPaths[idxHashTab] = pHashEntry;
+
+        pCache->cbAnsiPaths += sizeof(*pHashEntry) + cchPath + 1;
+        pCache->cAnsiPaths++;
+        if (pHashEntry->pNext)
+            pCache->cAnsiPathCollisions++;
+    }
+    return pHashEntry;
+}
+
+
+/**
+ * Creates an UTF-16 hash table entry for the given path.
+ *
+ * @returns The hash table entry or NULL if out of memory.
+ * @param   pCache              The hash
+ * @param   pFsObj              The resulting object.
+ * @param   pwszPath            The path.
+ * @param   cwcPath             The length of the path (in wchar_t's).
+ * @param   uHashPath           The hash of the path.
+ * @param   fAbsolute           Whether it can be refreshed using an absolute
+ *                              lookup or requires the slow treatment.
+ * @parma   idxMissingGen       The missing generation index.
+ * @param   idxHashTab          The hash table index of the path.
+ * @param   enmError            The lookup error.
+ */
+static PKFSHASHW kFsCacheCreatePathHashTabEntryW(PKFSCACHE pCache, PKFSOBJ pFsObj, const wchar_t *pwszPath, KU32 cwcPath,
+                                                 KU32 uHashPath, KU32 idxHashTab, BOOL fAbsolute, KU32 idxMissingGen,
+                                                 KFSLOOKUPERROR enmError)
+{
+    PKFSHASHW pHashEntry = (PKFSHASHW)kHlpAlloc(sizeof(*pHashEntry) + (cwcPath + 1) * sizeof(wchar_t));
+    if (pHashEntry)
+    {
+        pHashEntry->uHashPath       = uHashPath;
+        pHashEntry->cwcPath         = cwcPath;
+        pHashEntry->fAbsolute       = fAbsolute;
+        pHashEntry->idxMissingGen   = (KU8)idxMissingGen;
+        pHashEntry->enmError        = enmError;
+        pHashEntry->pwszPath        = (const wchar_t *)kHlpMemCopy(pHashEntry + 1, pwszPath, (cwcPath + 1) * sizeof(wchar_t));
+        if (pFsObj)
+        {
+            pHashEntry->pFsObj      = kFsCacheObjRetainInternal(pFsObj);
+            pHashEntry->uCacheGen   = pFsObj->bObjType != KFSOBJ_TYPE_MISSING
+                                    ? pCache->auGenerations[       pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                                    : pCache->auGenerationsMissing[pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN];
+            pFsObj->cPathHashRefs += 1; // for debugging
+        }
+        else
+        {
+            pHashEntry->pFsObj      = NULL;
+            if (enmError != KFSLOOKUPERROR_UNSUPPORTED)
+                pHashEntry->uCacheGen = pCache->auGenerationsMissing[idxMissingGen];
+            else
+                pHashEntry->uCacheGen = KFSOBJ_CACHE_GEN_IGNORE;
+        }
+
+        pHashEntry->pNext = pCache->apUtf16Paths[idxHashTab];
+        pCache->apUtf16Paths[idxHashTab] = pHashEntry;
+
+        pCache->cbUtf16Paths += sizeof(*pHashEntry) + (cwcPath + 1) * sizeof(wchar_t);
+        pCache->cUtf16Paths++;
+        if (pHashEntry->pNext)
+            pCache->cAnsiPathCollisions++;
+    }
+    return pHashEntry;
+}
+
+
+/**
+ * Links the child in under the parent.
+ *
+ * @returns K_TRUE on success, K_FALSE if out of memory.
+ * @param   pParent             The parent node.
+ * @param   pChild              The child node.
+ */
+static KBOOL kFsCacheDirAddChild(PKFSCACHE pCache, PKFSDIR pParent, PKFSOBJ pChild, KFSLOOKUPERROR *penmError)
+{
+    if (pParent->cChildren >= pParent->cChildrenAllocated)
+    {
+        void *pvNew = kHlpRealloc(pParent->papChildren, (pParent->cChildrenAllocated + 16) * sizeof(pParent->papChildren[0]));
+        if (!pvNew)
+            return K_FALSE;
+        pParent->papChildren = (PKFSOBJ *)pvNew;
+        pParent->cChildrenAllocated += 16;
+        pCache->cbObjects += 16 * sizeof(pParent->papChildren[0]);
+    }
+    pParent->papChildren[pParent->cChildren++] = kFsCacheObjRetainInternal(pChild);
+    return K_TRUE;
+}
+
+
+/**
+ * Creates a new cache object.
+ *
+ * @returns Pointer (with 1 reference) to the new object.  The object will not
+ *          be linked to the parent directory yet.
+ *
+ *          NULL if we're out of memory.
+ *
+ * @param   pCache          The cache.
+ * @param   pParent         The parent directory.
+ * @param   pszName         The ANSI name.
+ * @param   cchName         The length of the ANSI name.
+ * @param   pwszName        The UTF-16 name.
+ * @param   cwcName         The length of the UTF-16 name.
+ * @param   pszShortName    The ANSI short name, NULL if none.
+ * @param   cchShortName    The length of the ANSI short name, 0 if none.
+ * @param   pwszShortName   The UTF-16 short name, NULL if none.
+ * @param   cwcShortName    The length of the UTF-16 short name, 0 if none.
+ * @param   bObjType        The objct type.
+ * @param   penmError       Where to explain failures.
+ */
+PKFSOBJ kFsCacheCreateObject(PKFSCACHE pCache, PKFSDIR pParent,
+                             char const *pszName, KU16 cchName, wchar_t const *pwszName, KU16 cwcName,
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                             char const *pszShortName, KU16 cchShortName, wchar_t const *pwszShortName, KU16 cwcShortName,
+#endif
+                             KU8 bObjType, KFSLOOKUPERROR *penmError)
+{
+    /*
+     * Allocate the object.
+     */
+    KBOOL const fDirish = bObjType != KFSOBJ_TYPE_FILE && bObjType != KFSOBJ_TYPE_OTHER;
+    KSIZE const cbObj   = fDirish ? sizeof(KFSDIR) : sizeof(KFSOBJ);
+    KSIZE const cbNames = (cwcName + 1) * sizeof(wchar_t)                           + cchName + 1
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                        + (cwcShortName > 0 ? (cwcShortName + 1) * sizeof(wchar_t)  + cchShortName + 1 : 0)
+#endif
+                          ;
+    PKFSOBJ pObj;
+    kHlpAssert(pCache->u32Magic == KFSCACHE_MAGIC);
+
+    pObj = (PKFSOBJ)kHlpAlloc(cbObj + cbNames);
+    if (pObj)
+    {
+        KU8 *pbExtra = (KU8 *)pObj + cbObj;
+
+        KFSCACHE_LOCK(pCache); /** @todo reduce the amount of work done holding the lock */
+
+        pCache->cbObjects += cbObj + cbNames;
+        pCache->cObjects++;
+
+        /*
+         * Initialize the object.
+         */
+        pObj->u32Magic      = KFSOBJ_MAGIC;
+        pObj->cRefs         = 1;
+        pObj->uCacheGen     = bObjType != KFSOBJ_TYPE_MISSING
+                            ? pCache->auGenerations[pParent->Obj.fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                            : pCache->auGenerationsMissing[pParent->Obj.fFlags & KFSOBJ_F_USE_CUSTOM_GEN];
+        pObj->bObjType      = bObjType;
+        pObj->fHaveStats    = K_FALSE;
+        pObj->cPathHashRefs = 0;
+        pObj->idxUserDataLock = KU8_MAX;
+        pObj->fFlags        = pParent->Obj.fFlags & KFSOBJ_F_INHERITED_MASK;
+        pObj->pParent       = pParent;
+        pObj->uNameHash     = 0;
+        pObj->pNextNameHash = NULL;
+        pObj->pNameAlloc    = NULL;
+        pObj->pUserDataHead = NULL;
+
+#ifdef KFSCACHE_CFG_UTF16
+        pObj->cwcParent = pParent->Obj.cwcParent + pParent->Obj.cwcName + !!pParent->Obj.cwcName;
+        pObj->pwszName  = (wchar_t *)kHlpMemCopy(pbExtra, pwszName, cwcName * sizeof(wchar_t));
+        pObj->cwcName   = cwcName;
+        pbExtra += cwcName * sizeof(wchar_t);
+        *pbExtra++ = '\0';
+        *pbExtra++ = '\0';
+# ifdef KFSCACHE_CFG_SHORT_NAMES
+        pObj->cwcShortParent = pParent->Obj.cwcShortParent + pParent->Obj.cwcShortName + !!pParent->Obj.cwcShortName;
+        if (cwcShortName)
+        {
+            pObj->pwszShortName = (wchar_t *)kHlpMemCopy(pbExtra, pwszShortName, cwcShortName * sizeof(wchar_t));
+            pObj->cwcShortName  = cwcShortName;
+            pbExtra += cwcShortName * sizeof(wchar_t);
+            *pbExtra++ = '\0';
+            *pbExtra++ = '\0';
+        }
+        else
+        {
+            pObj->pwszShortName = pObj->pwszName;
+            pObj->cwcShortName  = cwcName;
+        }
+# endif
+#endif
+        pObj->cchParent = pParent->Obj.cchParent + pParent->Obj.cchName + !!pParent->Obj.cchName;
+        pObj->pszName   = (char *)kHlpMemCopy(pbExtra, pszName, cchName);
+        pObj->cchName   = cchName;
+        pbExtra += cchName;
+        *pbExtra++ = '\0';
+# ifdef KFSCACHE_CFG_SHORT_NAMES
+        pObj->cchShortParent = pParent->Obj.cchShortParent + pParent->Obj.cchShortName + !!pParent->Obj.cchShortName;
+        if (cchShortName)
+        {
+            pObj->pszShortName = (char *)kHlpMemCopy(pbExtra, pszShortName, cchShortName);
+            pObj->cchShortName = cchShortName;
+            pbExtra += cchShortName;
+            *pbExtra++ = '\0';
+        }
+        else
+        {
+            pObj->pszShortName = pObj->pszName;
+            pObj->cchShortName = cchName;
+        }
+#endif
+        kHlpAssert(pbExtra - (KU8 *)pObj == cbObj);
+
+        /*
+         * Type specific initialization.
+         */
+        if (fDirish)
+        {
+            PKFSDIR pDirObj = (PKFSDIR)pObj;
+            pDirObj->cChildren          = 0;
+            pDirObj->cChildrenAllocated = 0;
+            pDirObj->papChildren        = NULL;
+            pDirObj->fHashTabMask       = 0;
+            pDirObj->papHashTab         = NULL;
+            pDirObj->hDir               = INVALID_HANDLE_VALUE;
+            pDirObj->uDevNo             = pParent->uDevNo;
+            pDirObj->iLastWrite         = 0;
+            pDirObj->iLastPopulated     = 0;
+            pDirObj->fPopulated         = K_FALSE;
+        }
+
+        KFSCACHE_UNLOCK(pCache);
+    }
+    else
+        *penmError = KFSLOOKUPERROR_OUT_OF_MEMORY;
+    return pObj;
+}
+
+
+/**
+ * Creates a new object given wide char names.
+ *
+ * This function just converts the paths and calls kFsCacheCreateObject.
+ *
+ *
+ * @returns Pointer (with 1 reference) to the new object.  The object will not
+ *          be linked to the parent directory yet.
+ *
+ *          NULL if we're out of memory.
+ *
+ * @param   pCache          The cache.
+ * @param   pParent         The parent directory.
+ * @param   pszName         The ANSI name.
+ * @param   cchName         The length of the ANSI name.
+ * @param   pwszName        The UTF-16 name.
+ * @param   cwcName         The length of the UTF-16 name.
+ * @param   pwszShortName   The UTF-16 short name, NULL if none.
+ * @param   cwcShortName    The length of the UTF-16 short name, 0 if none.
+ * @param   bObjType        The objct type.
+ * @param   penmError       Where to explain failures.
+ */
+PKFSOBJ kFsCacheCreateObjectW(PKFSCACHE pCache, PKFSDIR pParent, wchar_t const *pwszName, KU32 cwcName,
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                              wchar_t const *pwszShortName, KU32 cwcShortName,
+#endif
+                              KU8 bObjType, KFSLOOKUPERROR *penmError)
+{
+    /* Convert names to ANSI first so we know their lengths. */
+    char szName[KFSCACHE_CFG_MAX_ANSI_NAME];
+    int  cchName = WideCharToMultiByte(CP_ACP, 0, pwszName, cwcName, szName, sizeof(szName) - 1, NULL, NULL);
+    if (cchName >= 0)
+    {
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+        char szShortName[12*3 + 1];
+        int  cchShortName = 0;
+        if (   cwcShortName == 0
+            || (cchShortName = WideCharToMultiByte(CP_ACP, 0, pwszShortName, cwcShortName,
+                                                   szShortName, sizeof(szShortName) - 1, NULL, NULL)) > 0)
+#endif
+        {
+            /* No locking needed here, kFsCacheCreateObject takes care of that. */
+            return kFsCacheCreateObject(pCache, pParent,
+                                        szName, cchName, pwszName, cwcName,
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                        szShortName, cchShortName, pwszShortName, cwcShortName,
+#endif
+                                        bObjType, penmError);
+        }
+    }
+    *penmError = KFSLOOKUPERROR_ANSI_CONVERSION_ERROR;
+    return NULL;
+}
+
+
+/**
+ * Creates a missing object.
+ *
+ * This is used for caching negative results.
+ *
+ * @returns Pointer to the newly created object on success (already linked into
+ *          pParent).  No reference.
+ *
+ *          NULL on failure.
+ *
+ * @param   pCache              The cache.
+ * @param   pParent             The parent directory.
+ * @param   pchName             The name.
+ * @param   cchName             The length of the name.
+ * @param   penmError           Where to return failure explanations.
+ */
+static PKFSOBJ kFsCacheCreateMissingA(PKFSCACHE pCache, PKFSDIR pParent, const char *pchName, KU32 cchName,
+                                      KFSLOOKUPERROR *penmError)
+{
+    /*
+     * Just convert the name to UTF-16 and call kFsCacheCreateObject to do the job.
+     */
+    wchar_t wszName[KFSCACHE_CFG_MAX_PATH];
+    int cwcName = MultiByteToWideChar(CP_ACP, 0, pchName, cchName, wszName, KFSCACHE_CFG_MAX_UTF16_NAME - 1);
+    if (cwcName > 0)
+    {
+        /** @todo check that it actually doesn't exists before we add it.  We should not
+         *        trust the directory enumeration here, or maybe we should?? */
+
+        PKFSOBJ pMissing = kFsCacheCreateObject(pCache, pParent, pchName, cchName, wszName, cwcName,
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                                NULL, 0, NULL, 0,
+#endif
+                                                KFSOBJ_TYPE_MISSING, penmError);
+        if (pMissing)
+        {
+            KBOOL fRc = kFsCacheDirAddChild(pCache, pParent, pMissing, penmError);
+            kFsCacheObjRelease(pCache, pMissing);
+            return fRc ? pMissing : NULL;
+        }
+        return NULL;
+    }
+    *penmError = KFSLOOKUPERROR_UTF16_CONVERSION_ERROR;
+    return NULL;
+}
+
+
+/**
+ * Creates a missing object, UTF-16 version.
+ *
+ * This is used for caching negative results.
+ *
+ * @returns Pointer to the newly created object on success (already linked into
+ *          pParent).  No reference.
+ *
+ *          NULL on failure.
+ *
+ * @param   pCache              The cache.
+ * @param   pParent             The parent directory.
+ * @param   pwcName             The name.
+ * @param   cwcName             The length of the name.
+ * @param   penmError           Where to return failure explanations.
+ */
+static PKFSOBJ kFsCacheCreateMissingW(PKFSCACHE pCache, PKFSDIR pParent, const wchar_t *pwcName, KU32 cwcName,
+                                      KFSLOOKUPERROR *penmError)
+{
+    /** @todo check that it actually doesn't exists before we add it.  We should not
+     *        trust the directory enumeration here, or maybe we should?? */
+    PKFSOBJ pMissing = kFsCacheCreateObjectW(pCache, pParent, pwcName, cwcName,
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                             NULL, 0,
+#endif
+                                             KFSOBJ_TYPE_MISSING, penmError);
+    if (pMissing)
+    {
+        KBOOL fRc = kFsCacheDirAddChild(pCache, pParent, pMissing, penmError);
+        kFsCacheObjRelease(pCache, pMissing);
+        return fRc ? pMissing : NULL;
+    }
+    return NULL;
+}
+
+
+/**
+ * Does the growing of names.
+ *
+ * @returns pCur
+ * @param   pCache          The cache.
+ * @param   pCur            The object.
+ * @param   pchName         The name (not necessarily terminated).
+ * @param   cchName         Name length.
+ * @param   pwcName         The UTF-16 name (not necessarily terminated).
+ * @param   cwcName         The length of the UTF-16 name in wchar_t's.
+ * @param   pchShortName    The short name.
+ * @param   cchShortName    The length of the short name.  This is 0 if no short
+ *                          name.
+ * @param   pwcShortName    The short UTF-16 name.
+ * @param   cwcShortName    The length of the short UTF-16 name.  This is 0 if
+ *                          no short name.
+ */
+static PKFSOBJ kFsCacheRefreshGrowNames(PKFSCACHE pCache, PKFSOBJ pCur,
+                                        const char *pchName, KU32 cchName,
+                                        wchar_t const *pwcName, KU32 cwcName
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                        , const char *pchShortName, KU32 cchShortName,
+                                        wchar_t const *pwcShortName, KU32 cwcShortName
+#endif
+                                        )
+{
+    PKFSOBJNAMEALLOC    pNameAlloc;
+    char               *pch;
+    KU32                cbNeeded;
+
+    pCache->cNameGrowths++;
+
+    /*
+     * Figure out our requirements.
+     */
+    cbNeeded = sizeof(KU32) + cchName + 1;
+#ifdef KFSCACHE_CFG_UTF16
+    cbNeeded += (cwcName + 1) * sizeof(wchar_t);
+#endif
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+    cbNeeded += cchShortName + !!cchShortName;
+# ifdef KFSCACHE_CFG_UTF16
+    cbNeeded += (cwcShortName + !!cwcShortName) * sizeof(wchar_t);
+# endif
+#endif
+    cbNeeded = K_ALIGN_Z(cbNeeded, 8); /* Memory will likely be 8 or 16 byte aligned, so we might just claim it. */
+
+    /*
+     * Allocate memory.
+     */
+    pNameAlloc = pCur->pNameAlloc;
+    if (!pNameAlloc)
+    {
+        pNameAlloc = (PKFSOBJNAMEALLOC)kHlpAlloc(cbNeeded);
+        if (!pNameAlloc)
+            return pCur;
+        pCache->cbObjects += cbNeeded;
+        pCur->pNameAlloc = pNameAlloc;
+        pNameAlloc->cb = cbNeeded;
+    }
+    else if (pNameAlloc->cb < cbNeeded)
+    {
+        pNameAlloc = (PKFSOBJNAMEALLOC)kHlpRealloc(pNameAlloc, cbNeeded);
+        if (!pNameAlloc)
+            return pCur;
+        pCache->cbObjects += cbNeeded - pNameAlloc->cb;
+        pCur->pNameAlloc = pNameAlloc;
+        pNameAlloc->cb = cbNeeded;
+    }
+
+    /*
+     * Copy out the new names, starting with the wide char ones to avoid misaligning them.
+     */
+    pch = &pNameAlloc->abSpace[0];
+
+#ifdef KFSCACHE_CFG_UTF16
+    pCur->pwszName = (wchar_t *)pch;
+    pCur->cwcName  = cwcName;
+    pch = kHlpMemPCopy(pch, pwcName, cwcName * sizeof(wchar_t));
+    *pch++ = '\0';
+    *pch++ = '\0';
+
+# ifdef KFSCACHE_CFG_SHORT_NAMES
+    if (cwcShortName == 0)
+    {
+        pCur->pwszShortName = pCur->pwszName;
+        pCur->cwcShortName  = pCur->cwcName;
+    }
+    else
+    {
+        pCur->pwszShortName = (wchar_t *)pch;
+        pCur->cwcShortName  = cwcShortName;
+        pch = kHlpMemPCopy(pch, pwcShortName, cwcShortName * sizeof(wchar_t));
+        *pch++ = '\0';
+        *pch++ = '\0';
+    }
+# endif
+#endif
+
+    pCur->pszName = pch;
+    pCur->cchName = cchName;
+    pch = kHlpMemPCopy(pch, pchName, cchName);
+    *pch++ = '\0';
+
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+    if (cchShortName == 0)
+    {
+        pCur->pszShortName = pCur->pszName;
+        pCur->cchShortName = pCur->cchName;
+    }
+    else
+    {
+        pCur->pszShortName = pch;
+        pCur->cchShortName = cchShortName;
+        pch = kHlpMemPCopy(pch, pchShortName, cchShortName);
+        *pch++ = '\0';
+    }
+#endif
+
+    return pCur;
+}
+
+
+/**
+ * Worker for kFsCacheDirFindOldChild that refreshes the file ID value on an
+ * object found by name.
+ *
+ * @returns pCur.
+ * @param   pDirRePop       Repopulation data.
+ * @param   pCur            The object to check the names of.
+ * @param   idFile          The file ID.
+ */
+static PKFSOBJ kFsCacheDirRefreshOldChildFileId(PKFSDIRREPOP pDirRePop, PKFSOBJ pCur, KI64 idFile)
+{
+    KFSCACHE_LOG(("Refreshing %s/%s/ - %s changed file ID from %#llx -> %#llx...\n",
+                  pCur->pParent->Obj.pParent->Obj.pszName, pCur->pParent->Obj.pszName, pCur->pszName,
+                  pCur->Stats.st_ino, idFile));
+    pCur->Stats.st_ino = idFile;
+    /** @todo inform user data items...  */
+    return pCur;
+}
+
+
+/**
+ * Worker for kFsCacheDirFindOldChild that checks the names after an old object
+ * has been found the file ID.
+ *
+ * @returns pCur.
+ * @param   pDirRePop       Repopulation data.
+ * @param   pCur            The object to check the names of.
+ * @param   pwcName         The file name.
+ * @param   cwcName         The length of the filename (in wchar_t's).
+ * @param   pwcShortName    The short name, if present.
+ * @param   cwcShortName    The length of the short name (in wchar_t's).
+ */
+static PKFSOBJ kFsCacheDirRefreshOldChildName(PKFSDIRREPOP pDirRePop, PKFSOBJ pCur, wchar_t const *pwcName, KU32 cwcName
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                              , wchar_t const *pwcShortName, KU32 cwcShortName
+#endif
+                                              )
+{
+    char szName[KFSCACHE_CFG_MAX_ANSI_NAME];
+    int  cchName;
+
+    pDirRePop->pCache->cNameChanges++;
+
+    /*
+     * Convert the names to ANSI first, that way we know all the lengths.
+     */
+    cchName = WideCharToMultiByte(CP_ACP, 0, pwcName, cwcName, szName, sizeof(szName) - 1, NULL, NULL);
+    if (cchName >= 0)
+    {
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+        char szShortName[12*3 + 1];
+        int  cchShortName = 0;
+        if (   cwcShortName == 0
+            || (cchShortName = WideCharToMultiByte(CP_ACP, 0, pwcShortName, cwcShortName,
+                                                   szShortName, sizeof(szShortName) - 1, NULL, NULL)) > 0)
+#endif
+        {
+            /*
+             * Shortening is easy for non-directory objects, for
+             * directory object we're only good when the length doesn't change
+             * on any of the components (cchParent et al).
+             *
+             * This deals with your typical xxxx.ext.tmp -> xxxx.ext renames.
+             */
+            if (   cchName <= pCur->cchName
+#ifdef KFSCACHE_CFG_UTF16
+                && cwcName <= pCur->cwcName
+#endif
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                && (   cchShortName == 0
+                    || (   cchShortName <= pCur->cchShortName
+                        && pCur->pszShortName != pCur->pszName
+# ifdef KFSCACHE_CFG_UTF16
+                        && cwcShortName <= pCur->cwcShortName
+                        && pCur->pwszShortName != pCur->pwszName
+# endif
+                       )
+                   )
+#endif
+               )
+            {
+                if (   pCur->bObjType != KFSOBJ_TYPE_DIR
+                    || (   cchName == pCur->cchName
+#ifdef KFSCACHE_CFG_UTF16
+                        && cwcName == pCur->cwcName
+#endif
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                        && (   cchShortName == 0
+                            || (   cchShortName == pCur->cchShortName
+# ifdef KFSCACHE_CFG_UTF16
+                                && cwcShortName == pCur->cwcShortName
+                                )
+# endif
+                           )
+#endif
+                       )
+                   )
+                {
+                    KFSCACHE_LOG(("Refreshing %ls - name changed to '%*.*ls'\n", pCur->pwszName, cwcName, cwcName, pwcName));
+                    *(char *)kHlpMemPCopy((void *)pCur->pszName, szName, cchName) = '\0';
+                    pCur->cchName = cchName;
+#ifdef KFSCACHE_CFG_UTF16
+                    *(wchar_t *)kHlpMemPCopy((void *)pCur->pwszName, pwcName, cwcName * sizeof(wchar_t)) = '\0';
+                    pCur->cwcName = cwcName;
+#endif
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                    *(char *)kHlpMemPCopy((void *)pCur->pszShortName, szShortName, cchShortName) = '\0';
+                    pCur->cchShortName = cchShortName;
+# ifdef KFSCACHE_CFG_UTF16
+                    *(wchar_t *)kHlpMemPCopy((void *)pCur->pwszShortName, pwcShortName, cwcShortName * sizeof(wchar_t)) = '\0';
+                    pCur->cwcShortName = cwcShortName;
+# endif
+#endif
+                    return pCur;
+                }
+            }
+
+            return kFsCacheRefreshGrowNames(pDirRePop->pCache, pCur, szName, cchName, pwcName, cwcName,
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                            szShortName, cchShortName, pwcShortName, cwcShortName
+#endif
+                                            );
+        }
+    }
+
+    fprintf(stderr, "kFsCacheDirRefreshOldChildName: WideCharToMultiByte error\n");
+    return pCur;
+}
+
+
+/**
+ * Worker for kFsCacheDirFindOldChild that checks the names after an old object
+ * has been found by the file ID.
+ *
+ * @returns pCur.
+ * @param   pDirRePop       Repopulation data.
+ * @param   pCur            The object to check the names of.
+ * @param   pwcName         The file name.
+ * @param   cwcName         The length of the filename (in wchar_t's).
+ * @param   pwcShortName    The short name, if present.
+ * @param   cwcShortName    The length of the short name (in wchar_t's).
+ */
+K_INLINE PKFSOBJ kFsCacheDirCheckOldChildName(PKFSDIRREPOP pDirRePop, PKFSOBJ pCur, wchar_t const *pwcName, KU32 cwcName
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                              , wchar_t const *pwcShortName, KU32 cwcShortName
+#endif
+                                              )
+{
+    if (   pCur->cwcName == cwcName
+        && kHlpMemComp(pCur->pwszName, pwcName, cwcName * sizeof(wchar_t)) == 0)
+    {
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+        if (cwcShortName == 0
+            ?    pCur->pwszShortName == pCur->pwszName
+              || (   pCur->cwcShortName == cwcName
+                  && kHlpMemComp(pCur->pwszShortName, pCur->pwszName, cwcName * sizeof(wchar_t)) == 0)
+            :    pCur->cwcShortName == cwcShortName
+              && kHlpMemComp(pCur->pwszShortName, pwcShortName, cwcShortName * sizeof(wchar_t)) == 0 )
+#endif
+        {
+            return pCur;
+        }
+    }
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+    return kFsCacheDirRefreshOldChildName(pDirRePop, pCur, pwcName, cwcName, pwcShortName, cwcShortName);
+#else
+    return kFsCacheDirRefreshOldChildName(pDirRePop, pCur, pwcName, cwcName);
+#endif
+}
+
+
+/**
+ * Worker for kFsCachePopuplateOrRefreshDir that locates an old child object
+ * while re-populating a directory.
+ *
+ * @returns Pointer to the existing object if found, NULL if not.
+ * @param   pDirRePop       Repopulation data.
+ * @param   idFile          The file ID, 0 if none.
+ * @param   pwcName         The file name.
+ * @param   cwcName         The length of the filename (in wchar_t's).
+ * @param   pwcShortName    The short name, if present.
+ * @param   cwcShortName    The length of the short name (in wchar_t's).
+ */
+static PKFSOBJ kFsCacheDirFindOldChildSlow(PKFSDIRREPOP pDirRePop, KI64 idFile, wchar_t const *pwcName, KU32 cwcName
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                           , wchar_t const *pwcShortName, KU32 cwcShortName
+#endif
+                                           )
+{
+    KU32        cOldChildren  = pDirRePop->cOldChildren;
+    KU32 const  iNextOldChild = K_MIN(pDirRePop->iNextOldChild, cOldChildren - 1);
+    KU32        iCur;
+    KI32        cInc;
+    KI32        cDirLefts;
+
+    kHlpAssertReturn(cOldChildren > 0, NULL);
+
+    /*
+     * Search by file ID first, if we've got one.
+     * ASSUMES that KU32 wraps around when -1 is added to 0.
+     */
+    if (   idFile != 0
+        && idFile != KI64_MAX
+        && idFile != KI64_MIN)
+    {
+        cInc = pDirRePop->cNextOldChildInc;
+        kHlpAssert(cInc == -1 || cInc == 1);
+        for (cDirLefts = 2; cDirLefts > 0; cDirLefts--)
+        {
+            for (iCur = iNextOldChild; iCur < cOldChildren; iCur += cInc)
+            {
+                PKFSOBJ pCur = pDirRePop->papOldChildren[iCur];
+                if (pCur->Stats.st_ino == idFile)
+                {
+                    /* Remove it and check the name. */
+                    pDirRePop->cOldChildren = --cOldChildren;
+                    if (iCur < cOldChildren)
+                        pDirRePop->papOldChildren[iCur] = pDirRePop->papOldChildren[cOldChildren];
+                    else
+                        cInc = -1;
+                    pDirRePop->cNextOldChildInc = cInc;
+                    pDirRePop->iNextOldChild    = iCur + cInc;
+
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                    return kFsCacheDirCheckOldChildName(pDirRePop, pCur, pwcName, cwcName, pwcShortName, cwcShortName);
+#else
+                    return kFsCacheDirCheckOldChildName(pDirRePop, pCur, pwcName, cwcName, pwcShortName, cwcShortName);
+#endif
+                }
+            }
+            cInc = -cInc;
+        }
+    }
+
+    /*
+     * Search by name.
+     * ASSUMES that KU32 wraps around when -1 is added to 0.
+     */
+    cInc = pDirRePop->cNextOldChildInc;
+    kHlpAssert(cInc == -1 || cInc == 1);
+    for (cDirLefts = 2; cDirLefts > 0; cDirLefts--)
+    {
+        for (iCur = iNextOldChild; iCur < cOldChildren; iCur += cInc)
+        {
+            PKFSOBJ pCur = pDirRePop->papOldChildren[iCur];
+            if (   (   pCur->cwcName == cwcName
+                    && kFsCacheIAreEqualW(pCur->pwszName, pwcName, cwcName))
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                || (   pCur->cwcShortName == cwcName
+                    && pCur->pwszShortName != pCur->pwszName
+                    && kFsCacheIAreEqualW(pCur->pwszShortName, pwcName, cwcName))
+#endif
+               )
+            {
+                /* Do this first so the compiler can share the rest with the above file ID return. */
+                if (pCur->Stats.st_ino == idFile)
+                { /* likely */ }
+                else
+                    pCur = kFsCacheDirRefreshOldChildFileId(pDirRePop, pCur, idFile);
+
+                /* Remove it and check the name. */
+                pDirRePop->cOldChildren = --cOldChildren;
+                if (iCur < cOldChildren)
+                    pDirRePop->papOldChildren[iCur] = pDirRePop->papOldChildren[cOldChildren];
+                else
+                    cInc = -1;
+                pDirRePop->cNextOldChildInc = cInc;
+                pDirRePop->iNextOldChild    = iCur + cInc;
+
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                return kFsCacheDirCheckOldChildName(pDirRePop, pCur, pwcName, cwcName, pwcShortName, cwcShortName);
+#else
+                return kFsCacheDirCheckOldChildName(pDirRePop, pCur, pwcName, cwcName, pwcShortName, cwcShortName);
+#endif
+            }
+        }
+        cInc = -cInc;
+    }
+
+    return NULL;
+}
+
+
+
+/**
+ * Worker for kFsCachePopuplateOrRefreshDir that locates an old child object
+ * while re-populating a directory.
+ *
+ * @returns Pointer to the existing object if found, NULL if not.
+ * @param   pDirRePop       Repopulation data.
+ * @param   idFile          The file ID, 0 if none.
+ * @param   pwcName         The file name.
+ * @param   cwcName         The length of the filename (in wchar_t's).
+ * @param   pwcShortName    The short name, if present.
+ * @param   cwcShortName    The length of the short name (in wchar_t's).
+ */
+K_INLINE PKFSOBJ kFsCacheDirFindOldChild(PKFSDIRREPOP pDirRePop, KI64 idFile, wchar_t const *pwcName, KU32 cwcName
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                         , wchar_t const *pwcShortName, KU32 cwcShortName
+#endif
+                                         )
+{
+    /*
+     * We only check the iNextOldChild element here, hoping that the compiler
+     * will actually inline this code, letting the slow version of the function
+     * do the rest.
+     */
+    KU32 cOldChildren = pDirRePop->cOldChildren;
+    if (cOldChildren > 0)
+    {
+        KU32 const  iNextOldChild = K_MIN(pDirRePop->iNextOldChild, cOldChildren - 1);
+        PKFSOBJ     pCur          = pDirRePop->papOldChildren[iNextOldChild];
+
+        if (   pCur->Stats.st_ino == idFile
+            && idFile != 0
+            && idFile != KI64_MAX
+            && idFile != KI64_MIN)
+            pCur = kFsCacheDirCheckOldChildName(pDirRePop, pCur, pwcName, cwcName, pwcShortName, cwcShortName);
+        else if (   pCur->cwcName == cwcName
+                 && kHlpMemComp(pCur->pwszName,  pwcName, cwcName * sizeof(wchar_t)) == 0)
+        {
+            if (pCur->Stats.st_ino == idFile)
+            { /* likely */ }
+            else
+                pCur = kFsCacheDirRefreshOldChildFileId(pDirRePop, pCur, idFile);
+
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+            if (cwcShortName == 0
+                ?    pCur->pwszShortName == pCur->pwszName
+                  || (   pCur->cwcShortName == cwcName
+                      && kHlpMemComp(pCur->pwszShortName, pCur->pwszName, cwcName * sizeof(wchar_t)) == 0)
+                :    pCur->cwcShortName == cwcShortName
+                  && kHlpMemComp(pCur->pwszShortName, pwcShortName, cwcShortName * sizeof(wchar_t)) == 0 )
+             { /* likely */ }
+             else
+                 pCur = kFsCacheDirRefreshOldChildName(pDirRePop, pCur, pwcName, cwcName, pwcShortName, cwcShortName);
+#endif
+        }
+        else
+            pCur = NULL;
+        if (pCur)
+        {
+            /*
+             * Got a match.  Remove the child from the array, replacing it with
+             * the last element.  (This means we're reversing the second half of
+             * the elements, which is why we need cNextOldChildInc.)
+             */
+            pDirRePop->cOldChildren = --cOldChildren;
+            if (iNextOldChild < cOldChildren)
+                pDirRePop->papOldChildren[iNextOldChild] = pDirRePop->papOldChildren[cOldChildren];
+            pDirRePop->iNextOldChild = iNextOldChild + pDirRePop->cNextOldChildInc;
+            return pCur;
+        }
+
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+        return kFsCacheDirFindOldChildSlow(pDirRePop, idFile, pwcName, cwcName, pwcShortName, cwcShortName);
+#else
+        return kFsCacheDirFindOldChildSlow(pDirRePop, idFile, pwcName, cwcName);
+#endif
+    }
+
+    return NULL;
+}
+
+
+
+/**
+ * Does the initial directory populating or refreshes it if it has been
+ * invalidated.
+ *
+ * This assumes the parent directory is opened.
+ *
+ * @returns K_TRUE on success, K_FALSE on error.
+ * @param   pCache              The cache.
+ * @param   pDir                The directory.
+ * @param   penmError           Where to store K_FALSE explanation.
+ */
+static KBOOL kFsCachePopuplateOrRefreshDir(PKFSCACHE pCache, PKFSDIR pDir, KFSLOOKUPERROR *penmError)
+{
+    KBOOL                       fRefreshing = K_FALSE;
+    KFSDIRREPOP                 DirRePop    = { NULL, 0, 0, 0, NULL };
+    MY_UNICODE_STRING           UniStrStar  = { 1 * sizeof(wchar_t), 2 * sizeof(wchar_t), L"*" };
+    FILETIME                    Now;
+
+    /** @todo May have to make this more flexible wrt information classes since
+     *        older windows versions (XP, w2K) might not correctly support the
+     *        ones with file ID on all file systems. */
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+    MY_FILE_INFORMATION_CLASS const enmInfoClassWithId = MyFileIdBothDirectoryInformation;
+    MY_FILE_INFORMATION_CLASS       enmInfoClass = MyFileIdBothDirectoryInformation;
+#else
+    MY_FILE_INFORMATION_CLASS const enmInfoClassWithId = MyFileIdFullDirectoryInformation;
+    MY_FILE_INFORMATION_CLASS       enmInfoClass = MyFileIdFullDirectoryInformation;
+#endif
+    MY_NTSTATUS                 rcNt;
+    MY_IO_STATUS_BLOCK          Ios;
+    union
+    {
+        /* Include the structures for better alignment. */
+        MY_FILE_ID_BOTH_DIR_INFORMATION     WithId;
+        MY_FILE_ID_FULL_DIR_INFORMATION     NoId;
+        /** Buffer padding. We're using a 56KB buffer here to avoid size troubles
+         * with CIFS and such that starts at 64KB. */
+        KU8                                 abBuf[56*1024];
+    } uBuf;
+
+
+    /*
+     * Open the directory.
+     */
+    if (pDir->hDir == INVALID_HANDLE_VALUE)
+    {
+        MY_OBJECT_ATTRIBUTES    ObjAttr;
+        MY_UNICODE_STRING       UniStr;
+
+        kHlpAssert(!pDir->fPopulated);
+
+        Ios.Information = -1;
+        Ios.u.Status    = -1;
+
+        UniStr.Buffer        = (wchar_t *)pDir->Obj.pwszName;
+        UniStr.Length        = (USHORT)(pDir->Obj.cwcName * sizeof(wchar_t));
+        UniStr.MaximumLength = UniStr.Length + sizeof(wchar_t);
+
+        kHlpAssertStmtReturn(pDir->Obj.pParent, *penmError = KFSLOOKUPERROR_INTERNAL_ERROR, K_FALSE);
+        kHlpAssertStmtReturn(pDir->Obj.pParent->hDir != INVALID_HANDLE_VALUE, *penmError = KFSLOOKUPERROR_INTERNAL_ERROR, K_FALSE);
+        MyInitializeObjectAttributes(&ObjAttr, &UniStr, OBJ_CASE_INSENSITIVE, pDir->Obj.pParent->hDir, NULL /*pSecAttr*/);
+
+        /** @todo FILE_OPEN_REPARSE_POINT? */
+        rcNt = g_pfnNtCreateFile(&pDir->hDir,
+                                 FILE_READ_DATA | FILE_LIST_DIRECTORY | FILE_READ_ATTRIBUTES | SYNCHRONIZE,
+                                 &ObjAttr,
+                                 &Ios,
+                                 NULL, /*cbFileInitialAlloc */
+                                 FILE_ATTRIBUTE_NORMAL,
+                                 FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                 FILE_OPEN,
+                                 FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+                                 NULL, /*pEaBuffer*/
+                                 0);   /*cbEaBuffer*/
+        if (MY_NT_SUCCESS(rcNt))
+        {  /* likely */ }
+        else
+        {
+            pDir->hDir = INVALID_HANDLE_VALUE;
+            *penmError = KFSLOOKUPERROR_DIR_OPEN_ERROR;
+            return K_FALSE;
+        }
+    }
+    /*
+     * When re-populating, we replace papChildren in the directory and pick
+     * from the old one as we go along.
+     */
+    else if (pDir->fPopulated)
+    {
+        KU32  cAllocated;
+        void *pvNew;
+
+        /* Make sure we really need to do this first. */
+        if (!pDir->fNeedRePopulating)
+        {
+            if (   pDir->Obj.uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+                || pDir->Obj.uCacheGen == pCache->auGenerations[pDir->Obj.fFlags & KFSOBJ_F_USE_CUSTOM_GEN])
+                return K_TRUE;
+            if (   kFsCacheRefreshObj(pCache, &pDir->Obj, penmError)
+                && !pDir->fNeedRePopulating)
+                return K_TRUE;
+        }
+
+        /* Yes we do need to. */
+        cAllocated = K_ALIGN_Z(pDir->cChildren, 16);
+        pvNew      = kHlpAlloc(sizeof(pDir->papChildren[0]) * cAllocated);
+        if (pvNew)
+        {
+            DirRePop.papOldChildren     = pDir->papChildren;
+            DirRePop.cOldChildren       = pDir->cChildren;
+            DirRePop.iNextOldChild      = 0;
+            DirRePop.cNextOldChildInc   = 1;
+            DirRePop.pCache             = pCache;
+
+            pDir->cChildren             = 0;
+            pDir->cChildrenAllocated    = cAllocated;
+            pDir->papChildren           = (PKFSOBJ *)pvNew;
+        }
+        else
+        {
+            *penmError = KFSLOOKUPERROR_OUT_OF_MEMORY;
+            return K_FALSE;
+        }
+
+        fRefreshing = K_TRUE;
+    }
+    if (!fRefreshing)
+        KFSCACHE_LOG(("Populating %s...\n", pDir->Obj.pszName));
+    else
+        KFSCACHE_LOG(("Refreshing %s...\n", pDir->Obj.pszName));
+
+    /*
+     * Enumerate the directory content.
+     *
+     * Note! The "*" filter is necessary because kFsCacheRefreshObj may have
+     *       previously quried a single file name and just passing NULL would
+     *       restart that single file name query.
+     */
+    GetSystemTimeAsFileTime(&Now);
+    pDir->iLastPopulated = ((KI64)Now.dwHighDateTime << 32) | Now.dwLowDateTime;
+    Ios.Information = -1;
+    Ios.u.Status    = -1;
+    rcNt = g_pfnNtQueryDirectoryFile(pDir->hDir,
+                                     NULL,      /* hEvent */
+                                     NULL,      /* pfnApcComplete */
+                                     NULL,      /* pvApcCompleteCtx */
+                                     &Ios,
+                                     &uBuf,
+                                     sizeof(uBuf),
+                                     enmInfoClass,
+                                     FALSE,     /* fReturnSingleEntry */
+                                     &UniStrStar, /* Filter / restart pos. */
+                                     TRUE);     /* fRestartScan */
+    while (MY_NT_SUCCESS(rcNt))
+    {
+        /*
+         * Process the entries in the buffer.
+         */
+        KSIZE offBuf = 0;
+        for (;;)
+        {
+            union
+            {
+                KU8                             *pb;
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                MY_FILE_ID_BOTH_DIR_INFORMATION *pWithId;
+                MY_FILE_BOTH_DIR_INFORMATION    *pNoId;
+#else
+                MY_FILE_ID_FULL_DIR_INFORMATION *pWithId;
+                MY_FILE_FULL_DIR_INFORMATION    *pNoId;
+#endif
+            }           uPtr;
+            PKFSOBJ     pCur;
+            KU32        offNext;
+            KU32        cbMinCur;
+            wchar_t    *pwchFilename;
+
+            /* ASSUME only the FileName member differs between the two structures. */
+            uPtr.pb = &uBuf.abBuf[offBuf];
+            if (enmInfoClass == enmInfoClassWithId)
+            {
+                pwchFilename = &uPtr.pWithId->FileName[0];
+                cbMinCur  = (KU32)((uintptr_t)&uPtr.pWithId->FileName[0] - (uintptr_t)uPtr.pWithId);
+                cbMinCur += uPtr.pNoId->FileNameLength;
+            }
+            else
+            {
+                pwchFilename = &uPtr.pNoId->FileName[0];
+                cbMinCur  = (KU32)((uintptr_t)&uPtr.pNoId->FileName[0] - (uintptr_t)uPtr.pNoId);
+                cbMinCur += uPtr.pNoId->FileNameLength;
+            }
+
+            /* We need to skip the '.' and '..' entries. */
+            if (   *pwchFilename != '.'
+                ||  uPtr.pNoId->FileNameLength > 4
+                ||  !(   uPtr.pNoId->FileNameLength == 2
+                      ||  (   uPtr.pNoId->FileNameLength == 4
+                           && pwchFilename[1] == '.') )
+               )
+            {
+                KBOOL       fRc;
+                KU8 const   bObjType = uPtr.pNoId->FileAttributes & FILE_ATTRIBUTE_DIRECTORY ? KFSOBJ_TYPE_DIR
+                                     : uPtr.pNoId->FileAttributes & (FILE_ATTRIBUTE_DEVICE | FILE_ATTRIBUTE_REPARSE_POINT)
+                                     ? KFSOBJ_TYPE_OTHER : KFSOBJ_TYPE_FILE;
+
+                /*
+                 * If refreshing, we must first see if this directory entry already
+                 * exists.
+                 */
+                if (!fRefreshing)
+                    pCur = NULL;
+                else
+                {
+                    pCur = kFsCacheDirFindOldChild(&DirRePop,
+                                                   enmInfoClass == enmInfoClassWithId ? uPtr.pWithId->FileId.QuadPart : 0,
+                                                   pwchFilename, uPtr.pWithId->FileNameLength / sizeof(wchar_t)
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                                   , uPtr.pWithId->ShortName, uPtr.pWithId->ShortNameLength / sizeof(wchar_t)
+#endif
+                                                   );
+                    if (pCur)
+                    {
+                        if (pCur->bObjType == bObjType)
+                        {
+                            if (pCur->bObjType == KFSOBJ_TYPE_DIR)
+                            {
+                                PKFSDIR pCurDir = (PKFSDIR)pCur;
+                                if (   !pCurDir->fPopulated
+                                    ||  (   pCurDir->iLastWrite == uPtr.pWithId->LastWriteTime.QuadPart
+                                         && (pCur->fFlags & KFSOBJ_F_WORKING_DIR_MTIME)
+                                         &&    pCurDir->iLastPopulated - pCurDir->iLastWrite
+                                            >= KFSCACHE_MIN_LAST_POPULATED_VS_WRITE ))
+                                { /* kind of likely */ }
+                                else
+                                {
+                                    KFSCACHE_LOG(("Refreshing %s/%s/ - %s/ needs re-populating...\n",
+                                                  pDir->Obj.pParent->Obj.pszName, pDir->Obj.pszName, pCur->pszName));
+                                    pCurDir->fNeedRePopulating = K_TRUE;
+                                }
+                            }
+                            if (pCur->uCacheGen != KFSOBJ_CACHE_GEN_IGNORE)
+                                pCur->uCacheGen = pCache->auGenerations[pCur->fFlags & KFSOBJ_F_USE_CUSTOM_GEN];
+                        }
+                        else if (pCur->bObjType == KFSOBJ_TYPE_MISSING)
+                        {
+                            KFSCACHE_LOG(("Refreshing %s/%s/ - %s appeared as %u, was missing.\n",
+                                          pDir->Obj.pParent->Obj.pszName, pDir->Obj.pszName, pCur->pszName, bObjType));
+                            pCur->bObjType = bObjType;
+                            if (pCur->uCacheGen != KFSOBJ_CACHE_GEN_IGNORE)
+                                pCur->uCacheGen = pCache->auGenerations[pCur->fFlags & KFSOBJ_F_USE_CUSTOM_GEN];
+                        }
+                        else
+                        {
+                            KFSCACHE_LOG(("Refreshing %s/%s/ - %s changed type from %u to %u! Dropping old object.\n",
+                                          pDir->Obj.pParent->Obj.pszName, pDir->Obj.pszName, pCur->pszName,
+                                          pCur->bObjType, bObjType));
+                            kFsCacheObjRelease(pCache, pCur);
+                            pCur = NULL;
+                        }
+                    }
+                    else
+                        KFSCACHE_LOG(("Refreshing %s/%s/ - %*.*ls added.\n", pDir->Obj.pParent->Obj.pszName, pDir->Obj.pszName,
+                                      uPtr.pNoId->FileNameLength / sizeof(wchar_t), uPtr.pNoId->FileNameLength / sizeof(wchar_t),
+                                      pwchFilename));
+                }
+
+                if (!pCur)
+                {
+                    /*
+                     * Create the entry (not linked yet).
+                     */
+                    pCur = kFsCacheCreateObjectW(pCache, pDir, pwchFilename, uPtr.pNoId->FileNameLength / sizeof(wchar_t),
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                                 uPtr.pNoId->ShortName, uPtr.pNoId->ShortNameLength / sizeof(wchar_t),
+#endif
+                                                 bObjType, penmError);
+                    if (!pCur)
+                        return K_FALSE;
+                    kHlpAssert(pCur->cRefs == 1);
+                }
+
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                if (enmInfoClass == enmInfoClassWithId)
+                    birdStatFillFromFileIdBothDirInfo(&pCur->Stats, uPtr.pWithId);
+                else
+                    birdStatFillFromFileBothDirInfo(&pCur->Stats, uPtr.pNoId);
+#else
+                if (enmInfoClass == enmInfoClassWithId)
+                    birdStatFillFromFileIdFullDirInfo(&pCur->Stats, uPtr.pWithId);
+                else
+                    birdStatFillFromFileFullDirInfo(&pCur->Stats, uPtr.pNoId);
+#endif
+                pCur->Stats.st_dev = pDir->uDevNo;
+                pCur->fHaveStats   = K_TRUE;
+
+                /*
+                 * Add the entry to the directory.
+                 */
+                fRc = kFsCacheDirAddChild(pCache, pDir, pCur, penmError);
+                kFsCacheObjRelease(pCache, pCur);
+                if (fRc)
+                { /* likely */ }
+                else
+                {
+                    rcNt = STATUS_NO_MEMORY;
+                    break;
+                }
+            }
+            /*
+             * When seeing '.' we update the directory info.
+             */
+            else if (uPtr.pNoId->FileNameLength == 2)
+            {
+                pDir->iLastWrite = uPtr.pNoId->LastWriteTime.QuadPart;
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                if (enmInfoClass == enmInfoClassWithId)
+                    birdStatFillFromFileIdBothDirInfo(&pDir->Obj.Stats, uPtr.pWithId);
+                else
+                    birdStatFillFromFileBothDirInfo(&pDir->Obj.Stats, uPtr.pNoId);
+#else
+                if (enmInfoClass == enmInfoClassWithId)
+                    birdStatFillFromFileIdFullDirInfo(&pDir->Obj.Stats, uPtr.pWithId);
+                else
+                    birdStatFillFromFileFullDirInfo(&pDir->Obj.Stats, uPtr.pNoId);
+#endif
+            }
+
+            /*
+             * Advance.
+             */
+            offNext = uPtr.pNoId->NextEntryOffset;
+            if (   offNext >= cbMinCur
+                && offNext < sizeof(uBuf))
+                offBuf += offNext;
+            else
+                break;
+        }
+
+        /*
+         * Read the next chunk.
+         */
+        rcNt = g_pfnNtQueryDirectoryFile(pDir->hDir,
+                                         NULL,      /* hEvent */
+                                         NULL,      /* pfnApcComplete */
+                                         NULL,      /* pvApcCompleteCtx */
+                                         &Ios,
+                                         &uBuf,
+                                         sizeof(uBuf),
+                                         enmInfoClass,
+                                         FALSE,     /* fReturnSingleEntry */
+                                         &UniStrStar, /* Filter / restart pos. */
+                                         FALSE);    /* fRestartScan */
+    }
+
+    if (rcNt == MY_STATUS_NO_MORE_FILES)
+    {
+        /*
+         * If refreshing, add missing children objects and ditch the rest.
+         * We ignore errors while adding missing children (lazy bird).
+         */
+        if (!fRefreshing)
+        { /* more likely */ }
+        else
+        {
+            while (DirRePop.cOldChildren > 0)
+            {
+                KFSLOOKUPERROR enmErrorIgn;
+                PKFSOBJ pOldChild = DirRePop.papOldChildren[--DirRePop.cOldChildren];
+                if (pOldChild->bObjType == KFSOBJ_TYPE_MISSING)
+                    kFsCacheDirAddChild(pCache, pDir, pOldChild, &enmErrorIgn);
+                else
+                {
+                    KFSCACHE_LOG(("Refreshing %s/%s/ - %s was removed.\n",
+                                  pDir->Obj.pParent->Obj.pszName, pDir->Obj.pszName, pOldChild->pszName));
+                    kHlpAssert(pOldChild->bObjType != KFSOBJ_TYPE_DIR);
+                    /* Remove from hash table. */
+                    if (pOldChild->uNameHash != 0)
+                    {
+                        KU32    idx = pOldChild->uNameHash & pDir->fHashTabMask;
+                        PKFSOBJ pPrev = pDir->papHashTab[idx];
+                        if (pPrev == pOldChild)
+                            pDir->papHashTab[idx] = pOldChild->pNextNameHash;
+                        else
+                        {
+                            while (pPrev && pPrev->pNextNameHash != pOldChild)
+                                pPrev = pPrev->pNextNameHash;
+                            kHlpAssert(pPrev);
+                            if (pPrev)
+                                pPrev->pNextNameHash = pOldChild->pNextNameHash;
+                        }
+                        pOldChild->uNameHash = 0;
+                    }
+                }
+                kFsCacheObjRelease(pCache, pOldChild);
+            }
+            kHlpFree(DirRePop.papOldChildren);
+        }
+
+        /*
+         * Mark the directory as fully populated and up to date.
+         */
+        pDir->fPopulated        = K_TRUE;
+        pDir->fNeedRePopulating = K_FALSE;
+        if (pDir->Obj.uCacheGen != KFSOBJ_CACHE_GEN_IGNORE)
+            pDir->Obj.uCacheGen = pCache->auGenerations[pDir->Obj.fFlags & KFSOBJ_F_USE_CUSTOM_GEN];
+        return K_TRUE;
+    }
+
+    /*
+     * If we failed during refresh, add back remaining old children.
+     */
+    if (!fRefreshing)
+    {
+        while (DirRePop.cOldChildren > 0)
+        {
+            KFSLOOKUPERROR enmErrorIgn;
+            PKFSOBJ pOldChild = DirRePop.papOldChildren[--DirRePop.cOldChildren];
+            kFsCacheDirAddChild(pCache, pDir, pOldChild, &enmErrorIgn);
+            kFsCacheObjRelease(pCache, pOldChild);
+        }
+        kHlpFree(DirRePop.papOldChildren);
+    }
+
+    kHlpAssertMsgFailed(("%#x\n", rcNt));
+    *penmError = KFSLOOKUPERROR_DIR_READ_ERROR;
+    return K_TRUE;
+}
+
+
+/**
+ * Does the initial directory populating or refreshes it if it has been
+ * invalidated.
+ *
+ * This assumes the parent directory is opened.
+ *
+ * @returns K_TRUE on success, K_FALSE on error.
+ * @param   pCache              The cache.
+ * @param   pDir                The directory.
+ * @param   penmError           Where to store K_FALSE explanation.  Optional.
+ */
+KBOOL kFsCacheDirEnsurePopuplated(PKFSCACHE pCache, PKFSDIR pDir, KFSLOOKUPERROR *penmError)
+{
+    KFSLOOKUPERROR enmIgnored;
+    KBOOL          fRet;
+    KFSCACHE_LOCK(pCache);
+    if (   pDir->fPopulated
+        && !pDir->fNeedRePopulating
+        && (   pDir->Obj.uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+            || pDir->Obj.uCacheGen == pCache->auGenerations[pDir->Obj.fFlags & KFSOBJ_F_USE_CUSTOM_GEN]) )
+        fRet = K_TRUE;
+    else
+        fRet = kFsCachePopuplateOrRefreshDir(pCache, pDir, penmError ? penmError : &enmIgnored);
+    KFSCACHE_UNLOCK(pCache);
+    return fRet;
+}
+
+
+/**
+ * Checks whether the modified timestamp differs on this directory.
+ *
+ * @returns K_TRUE if possibly modified, K_FALSE if definitely not modified.
+ * @param   pDir                The directory..
+ */
+static KBOOL kFsCacheDirIsModified(PKFSDIR pDir)
+{
+    if (   pDir->hDir != INVALID_HANDLE_VALUE
+        && (pDir->Obj.fFlags & KFSOBJ_F_WORKING_DIR_MTIME) )
+    {
+        if (!pDir->fNeedRePopulating)
+        {
+            MY_IO_STATUS_BLOCK          Ios;
+            MY_FILE_BASIC_INFORMATION   BasicInfo;
+            MY_NTSTATUS                 rcNt;
+
+            Ios.Information = -1;
+            Ios.u.Status    = -1;
+
+            rcNt = g_pfnNtQueryInformationFile(pDir->hDir, &Ios, &BasicInfo, sizeof(BasicInfo), MyFileBasicInformation);
+            if (MY_NT_SUCCESS(rcNt))
+            {
+                if (   BasicInfo.LastWriteTime.QuadPart != pDir->iLastWrite
+                    || pDir->iLastPopulated - pDir->iLastWrite < KFSCACHE_MIN_LAST_POPULATED_VS_WRITE)
+                {
+                    pDir->fNeedRePopulating = K_TRUE;
+                    return K_TRUE;
+                }
+                return K_FALSE;
+            }
+        }
+    }
+    /* The cache root never changes. */
+    else if (!pDir->Obj.pParent)
+        return K_FALSE;
+
+    return K_TRUE;
+}
+
+
+static KBOOL kFsCacheRefreshMissing(PKFSCACHE pCache, PKFSOBJ pMissing, KFSLOOKUPERROR *penmError)
+{
+    /*
+     * If we can, we start by checking whether the parent directory
+     * has been modified.   If it has, we need to check if this entry
+     * was added or not, most likely it wasn't added.
+     */
+    if (!kFsCacheDirIsModified(pMissing->pParent))
+    {
+        KFSCACHE_LOG(("Parent of missing not written to %s/%s\n", pMissing->pParent->Obj.pszName, pMissing->pszName));
+        pMissing->uCacheGen = pCache->auGenerationsMissing[pMissing->fFlags & KFSOBJ_F_USE_CUSTOM_GEN];
+    }
+    else
+    {
+        MY_UNICODE_STRING           UniStr;
+        MY_OBJECT_ATTRIBUTES        ObjAttr;
+        MY_FILE_BASIC_INFORMATION   BasicInfo;
+        MY_NTSTATUS                 rcNt;
+
+        UniStr.Buffer        = (wchar_t *)pMissing->pwszName;
+        UniStr.Length        = (USHORT)(pMissing->cwcName * sizeof(wchar_t));
+        UniStr.MaximumLength = UniStr.Length + sizeof(wchar_t);
+
+        kHlpAssert(pMissing->pParent->hDir != INVALID_HANDLE_VALUE);
+        MyInitializeObjectAttributes(&ObjAttr, &UniStr, OBJ_CASE_INSENSITIVE, pMissing->pParent->hDir, NULL /*pSecAttr*/);
+
+        rcNt = g_pfnNtQueryAttributesFile(&ObjAttr, &BasicInfo);
+        if (!MY_NT_SUCCESS(rcNt))
+        {
+            /*
+             * Probably more likely that a missing node stays missing.
+             */
+            pMissing->uCacheGen = pCache->auGenerationsMissing[pMissing->fFlags & KFSOBJ_F_USE_CUSTOM_GEN];
+            KFSCACHE_LOG(("Still missing %s/%s\n", pMissing->pParent->Obj.pszName, pMissing->pszName));
+        }
+        else
+        {
+            /*
+             * We must metamorphose this node.  This is tedious business
+             * because we need to check the file name casing.  We might
+             * just as well update the parent directory...
+             */
+            KU8 const   bObjType = BasicInfo.FileAttributes & FILE_ATTRIBUTE_DIRECTORY ? KFSOBJ_TYPE_DIR
+                                 : BasicInfo.FileAttributes & (FILE_ATTRIBUTE_DEVICE | FILE_ATTRIBUTE_REPARSE_POINT)
+                                 ? KFSOBJ_TYPE_OTHER : KFSOBJ_TYPE_FILE;
+
+            KFSCACHE_LOG(("Birth of %s/%s as %d with attribs %#x...\n",
+                          pMissing->pParent->Obj.pszName, pMissing->pszName, bObjType, BasicInfo.FileAttributes));
+            pMissing->bObjType  = bObjType;
+            /* (auGenerations[] - 1): make sure it's not considered up to date */
+            pMissing->uCacheGen = pCache->auGenerations[pMissing->fFlags & KFSOBJ_F_USE_CUSTOM_GEN] - 1;
+            /* Trigger parent directory repopulation. */
+            if (pMissing->pParent->fPopulated)
+                pMissing->pParent->fNeedRePopulating = K_TRUE;
+/**
+ * @todo refresh missing object names when it appears.
+ */
+        }
+    }
+
+    return K_TRUE;
+}
+
+
+static KBOOL kFsCacheRefreshMissingIntermediateDir(PKFSCACHE pCache, PKFSOBJ pMissing, KFSLOOKUPERROR *penmError)
+{
+    if (kFsCacheRefreshMissing(pCache, pMissing, penmError))
+    {
+        if (   pMissing->bObjType == KFSOBJ_TYPE_DIR
+            || pMissing->bObjType == KFSOBJ_TYPE_MISSING)
+            return K_TRUE;
+        *penmError = KFSLOOKUPERROR_PATH_COMP_NOT_DIR;
+    }
+
+    return K_FALSE;
+}
+
+
+/**
+ * Generic object refresh.
+ *
+ * This does not refresh the content of directories.
+ *
+ * @returns K_TRUE on success.  K_FALSE and *penmError on failure.
+ * @param   pCache              The cache.
+ * @param   pObj                The object.
+ * @param   penmError           Where to return error info.
+ */
+static KBOOL kFsCacheRefreshObj(PKFSCACHE pCache, PKFSOBJ pObj, KFSLOOKUPERROR *penmError)
+{
+    KBOOL fRc;
+
+    /*
+     * Since we generally assume nothing goes away in this cache, we only really
+     * have a hard time with negative entries.  So, missing stuff goes to
+     * complicated land.
+     */
+    if (pObj->bObjType == KFSOBJ_TYPE_MISSING)
+        fRc = kFsCacheRefreshMissing(pCache, pObj, penmError);
+    else
+    {
+        /*
+         * This object is supposed to exist, so all we need to do is query essential
+         * stats again.  Since we've already got handles on directories, there are
+         * two ways to go about this.
+         */
+        union
+        {
+            MY_FILE_NETWORK_OPEN_INFORMATION    FullInfo;
+            MY_FILE_STANDARD_INFORMATION        StdInfo;
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+            MY_FILE_ID_BOTH_DIR_INFORMATION     WithId;
+            //MY_FILE_BOTH_DIR_INFORMATION        NoId;
+#else
+            MY_FILE_ID_FULL_DIR_INFORMATION     WithId;
+            //MY_FILE_FULL_DIR_INFORMATION        NoId;
+#endif
+            KU8                                 abPadding[  sizeof(wchar_t) * KFSCACHE_CFG_MAX_UTF16_NAME
+                                                          + sizeof(MY_FILE_ID_BOTH_DIR_INFORMATION)];
+        } uBuf;
+        MY_IO_STATUS_BLOCK                      Ios;
+        MY_NTSTATUS                             rcNt;
+        if (   pObj->bObjType != KFSOBJ_TYPE_DIR
+            || ((PKFSDIR)pObj)->hDir == INVALID_HANDLE_VALUE)
+        {
+#if 1
+            /* This always works and doesn't mess up NtQueryDirectoryFile. */
+            MY_UNICODE_STRING    UniStr;
+            MY_OBJECT_ATTRIBUTES ObjAttr;
+
+            UniStr.Buffer        = (wchar_t *)pObj->pwszName;
+            UniStr.Length        = (USHORT)(pObj->cwcName * sizeof(wchar_t));
+            UniStr.MaximumLength = UniStr.Length + sizeof(wchar_t);
+
+            kHlpAssert(pObj->pParent->hDir != INVALID_HANDLE_VALUE);
+            MyInitializeObjectAttributes(&ObjAttr, &UniStr, OBJ_CASE_INSENSITIVE, pObj->pParent->hDir, NULL /*pSecAttr*/);
+
+            rcNt = g_pfnNtQueryFullAttributesFile(&ObjAttr, &uBuf.FullInfo);
+            if (MY_NT_SUCCESS(rcNt))
+            {
+                pObj->Stats.st_size          = uBuf.FullInfo.EndOfFile.QuadPart;
+                birdNtTimeToTimeSpec(uBuf.FullInfo.CreationTime.QuadPart,   &pObj->Stats.st_birthtim);
+                birdNtTimeToTimeSpec(uBuf.FullInfo.ChangeTime.QuadPart,     &pObj->Stats.st_ctim);
+                birdNtTimeToTimeSpec(uBuf.FullInfo.LastWriteTime.QuadPart,  &pObj->Stats.st_mtim);
+                birdNtTimeToTimeSpec(uBuf.FullInfo.LastAccessTime.QuadPart, &pObj->Stats.st_atim);
+                pObj->Stats.st_attribs       = uBuf.FullInfo.FileAttributes;
+                pObj->Stats.st_blksize       = 65536;
+                pObj->Stats.st_blocks        = (uBuf.FullInfo.AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
+                                             / BIRD_STAT_BLOCK_SIZE;
+            }
+#else
+            /* This alternative lets us keep the inode number up to date and
+               detect name case changes.
+               Update: This doesn't work on windows 7, it ignores the UniStr
+                       and continue with the "*" search. So, we're using the
+                       above query instead for the time being. */
+            MY_UNICODE_STRING    UniStr;
+# ifdef KFSCACHE_CFG_SHORT_NAMES
+            MY_FILE_INFORMATION_CLASS enmInfoClass = MyFileIdBothDirectoryInformation;
+# else
+            MY_FILE_INFORMATION_CLASS enmInfoClass = MyFileIdFullDirectoryInformation;
+# endif
+
+            UniStr.Buffer        = (wchar_t *)pObj->pwszName;
+            UniStr.Length        = (USHORT)(pObj->cwcName * sizeof(wchar_t));
+            UniStr.MaximumLength = UniStr.Length + sizeof(wchar_t);
+
+            kHlpAssert(pObj->pParent->hDir != INVALID_HANDLE_VALUE);
+
+            Ios.Information = -1;
+            Ios.u.Status    = -1;
+            rcNt = g_pfnNtQueryDirectoryFile(pObj->pParent->hDir,
+                                             NULL,      /* hEvent */
+                                             NULL,      /* pfnApcComplete */
+                                             NULL,      /* pvApcCompleteCtx */
+                                             &Ios,
+                                             &uBuf,
+                                             sizeof(uBuf),
+                                             enmInfoClass,
+                                             TRUE,      /* fReturnSingleEntry */
+                                             &UniStr,   /* Filter / restart pos. */
+                                             TRUE);     /* fRestartScan */
+
+            if (MY_NT_SUCCESS(rcNt))
+            {
+                if (pObj->Stats.st_ino == uBuf.WithId.FileId.QuadPart)
+                    KFSCACHE_LOG(("Refreshing %s/%s, no ID change...\n", pObj->pParent->Obj.pszName, pObj->pszName));
+                else if (   pObj->cwcName == uBuf.WithId.FileNameLength / sizeof(wchar_t)
+# ifdef KFSCACHE_CFG_SHORT_NAMES
+                         && (  uBuf.WithId.ShortNameLength == 0
+                             ?    pObj->pwszName == pObj->pwszShortName
+                               || (   pObj->cwcName == pObj->cwcShortName
+                                   && memcmp(pObj->pwszName, pObj->pwszShortName, pObj->cwcName * sizeof(wchar_t)) == 0)
+                             : pObj->cwcShortName == uBuf.WithId.ShortNameLength / sizeof(wchar_t)
+                               && memcmp(pObj->pwszShortName, uBuf.WithId.ShortName, uBuf.WithId.ShortNameLength) == 0
+                            )
+# endif
+                         && memcmp(pObj->pwszName, uBuf.WithId.FileName, uBuf.WithId.FileNameLength) == 0
+                         )
+                {
+                    KFSCACHE_LOG(("Refreshing %s/%s, ID changed %#llx -> %#llx...\n",
+                                  pObj->pParent->Obj.pszName, pObj->pszName, pObj->Stats.st_ino, uBuf.WithId.FileId.QuadPart));
+                    pObj->Stats.st_ino = uBuf.WithId.FileId.QuadPart;
+                }
+                else
+                {
+                    KFSCACHE_LOG(("Refreshing %s/%s, ID changed %#llx -> %#llx and names too...\n",
+                                  pObj->pParent->Obj.pszName, pObj->pszName, pObj->Stats.st_ino, uBuf.WithId.FileId.QuadPart));
+                    fprintf(stderr, "kFsCacheRefreshObj - ID + name change not implemented!!\n");
+                    fflush(stderr);
+                    __debugbreak();
+                    pObj->Stats.st_ino = uBuf.WithId.FileId.QuadPart;
+                    /** @todo implement as needed.   */
+                }
+
+                pObj->Stats.st_size          = uBuf.WithId.EndOfFile.QuadPart;
+                birdNtTimeToTimeSpec(uBuf.WithId.CreationTime.QuadPart,   &pObj->Stats.st_birthtim);
+                birdNtTimeToTimeSpec(uBuf.WithId.ChangeTime.QuadPart,     &pObj->Stats.st_ctim);
+                birdNtTimeToTimeSpec(uBuf.WithId.LastWriteTime.QuadPart,  &pObj->Stats.st_mtim);
+                birdNtTimeToTimeSpec(uBuf.WithId.LastAccessTime.QuadPart, &pObj->Stats.st_atim);
+                pObj->Stats.st_attribs       = uBuf.WithId.FileAttributes;
+                pObj->Stats.st_blksize       = 65536;
+                pObj->Stats.st_blocks        = (uBuf.WithId.AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
+                                             / BIRD_STAT_BLOCK_SIZE;
+            }
+#endif
+            if (MY_NT_SUCCESS(rcNt))
+            {
+                pObj->uCacheGen = pCache->auGenerations[pObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN];
+                fRc = K_TRUE;
+            }
+            else
+            {
+                /* ouch! */
+                kHlpAssertMsgFailed(("%#x\n", rcNt));
+                fprintf(stderr, "kFsCacheRefreshObj - rcNt=%#x on non-dir - not implemented!\n", rcNt);
+                __debugbreak();
+                fRc = K_FALSE;
+            }
+        }
+        else
+        {
+            /*
+             * An open directory.  Query information via the handle, the
+             * file ID shouldn't have been able to change, so we can use
+             * NtQueryInformationFile.  Right...
+             */
+            PKFSDIR pDir = (PKFSDIR)pObj;
+            Ios.Information = -1;
+            Ios.u.Status    = -1;
+            rcNt = g_pfnNtQueryInformationFile(pDir->hDir, &Ios, &uBuf.FullInfo, sizeof(uBuf.FullInfo),
+                                               MyFileNetworkOpenInformation);
+            if (MY_NT_SUCCESS(rcNt))
+                rcNt = Ios.u.Status;
+            if (MY_NT_SUCCESS(rcNt))
+            {
+                pObj->Stats.st_size          = uBuf.FullInfo.EndOfFile.QuadPart;
+                birdNtTimeToTimeSpec(uBuf.FullInfo.CreationTime.QuadPart,   &pObj->Stats.st_birthtim);
+                birdNtTimeToTimeSpec(uBuf.FullInfo.ChangeTime.QuadPart,     &pObj->Stats.st_ctim);
+                birdNtTimeToTimeSpec(uBuf.FullInfo.LastWriteTime.QuadPart,  &pObj->Stats.st_mtim);
+                birdNtTimeToTimeSpec(uBuf.FullInfo.LastAccessTime.QuadPart, &pObj->Stats.st_atim);
+                pObj->Stats.st_attribs       = uBuf.FullInfo.FileAttributes;
+                pObj->Stats.st_blksize       = 65536;
+                pObj->Stats.st_blocks        = (uBuf.FullInfo.AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
+                                             / BIRD_STAT_BLOCK_SIZE;
+
+                if (   pDir->iLastWrite == uBuf.FullInfo.LastWriteTime.QuadPart
+                    && (pObj->fFlags & KFSOBJ_F_WORKING_DIR_MTIME)
+                    && pDir->iLastPopulated - pDir->iLastWrite >= KFSCACHE_MIN_LAST_POPULATED_VS_WRITE)
+                    KFSCACHE_LOG(("Refreshing %s/%s/ - no re-populating necessary.\n",
+                                  pObj->pParent->Obj.pszName, pObj->pszName));
+                else
+                {
+                    KFSCACHE_LOG(("Refreshing %s/%s/ - needs re-populating...\n",
+                                  pObj->pParent->Obj.pszName, pObj->pszName));
+                    pDir->fNeedRePopulating = K_TRUE;
+#if 0
+                    /* Refresh the link count. */
+                    rcNt = g_pfnNtQueryInformationFile(pDir->hDir, &Ios, &StdInfo, sizeof(StdInfo), FileStandardInformation);
+                    if (MY_NT_SUCCESS(rcNt))
+                        rcNt = Ios.s.Status;
+                    if (MY_NT_SUCCESS(rcNt))
+                        pObj->Stats.st_nlink = StdInfo.NumberOfLinks;
+#endif
+                }
+            }
+            if (MY_NT_SUCCESS(rcNt))
+            {
+                pObj->uCacheGen = pCache->auGenerations[pObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN];
+                fRc = K_TRUE;
+            }
+            else
+            {
+                /* ouch! */
+                kHlpAssertMsgFailed(("%#x\n", rcNt));
+                fprintf(stderr, "kFsCacheRefreshObj - rcNt=%#x on dir - not implemented!\n", rcNt);
+                fflush(stderr);
+                __debugbreak();
+                fRc = K_FALSE;
+            }
+        }
+    }
+
+    return fRc;
+}
+
+
+
+/**
+ * Looks up a drive letter.
+ *
+ * Will enter the drive if necessary.
+ *
+ * @returns Pointer to the root directory of the drive or an update-to-date
+ *          missing node.
+ * @param   pCache              The cache.
+ * @param   chLetter            The uppercased drive letter.
+ * @param   fFlags              Lookup flags, KFSCACHE_LOOKUP_F_XXX.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ */
+static PKFSOBJ kFsCacheLookupDrive(PKFSCACHE pCache, char chLetter, KU32 fFlags, KFSLOOKUPERROR *penmError)
+{
+    KU32 const          uNameHash = chLetter - 'A';
+    PKFSOBJ             pCur      = pCache->RootDir.papHashTab[uNameHash];
+
+    KU32                cLeft;
+    PKFSOBJ            *ppCur;
+    MY_UNICODE_STRING   NtPath;
+    wchar_t             wszTmp[8];
+    char                szTmp[4];
+
+    /*
+     * Custom drive letter hashing.
+     */
+    kHlpAssert((uNameHash & pCache->RootDir.fHashTabMask) == uNameHash);
+    while (pCur)
+    {
+        if (   pCur->uNameHash == uNameHash
+            && pCur->cchName == 2
+            && pCur->pszName[0] == chLetter
+            && pCur->pszName[1] == ':')
+        {
+            if (pCur->bObjType == KFSOBJ_TYPE_DIR)
+                return pCur;
+            if (   (fFlags & KFSCACHE_LOOKUP_F_NO_REFRESH)
+                || kFsCacheRefreshMissingIntermediateDir(pCache, pCur, penmError))
+                return pCur;
+            return NULL;
+        }
+        pCur = pCur->pNextNameHash;
+    }
+
+    /*
+     * Make 100% sure it's not there.
+     */
+    cLeft = pCache->RootDir.cChildren;
+    ppCur = pCache->RootDir.papChildren;
+    while (cLeft-- > 0)
+    {
+        pCur = *ppCur++;
+        if (   pCur->cchName == 2
+            && pCur->pszName[0] == chLetter
+            && pCur->pszName[1] == ':')
+        {
+            if (pCur->bObjType == KFSOBJ_TYPE_DIR)
+                return pCur;
+            kHlpAssert(pCur->bObjType == KFSOBJ_TYPE_MISSING);
+            if (   (fFlags & KFSCACHE_LOOKUP_F_NO_REFRESH)
+                || kFsCacheRefreshMissingIntermediateDir(pCache, pCur, penmError))
+                return pCur;
+            return NULL;
+        }
+    }
+
+    if (fFlags & KFSCACHE_LOOKUP_F_NO_INSERT)
+    {
+        *penmError = KFSLOOKUPERROR_PATH_COMP_NOT_FOUND; /* close enough */
+        return NULL;
+    }
+
+    /*
+     * Need to add it.  We always keep the drive letters open for the benefit
+     * of kFsCachePopuplateOrRefreshDir and others.
+     */
+    wszTmp[0] = szTmp[0] = chLetter;
+    wszTmp[1] = szTmp[1] = ':';
+    wszTmp[2] = szTmp[2] = '\\';
+    wszTmp[3] = '.';
+    wszTmp[4] = '\0';
+    szTmp[2] = '\0';
+
+    NtPath.Buffer        = NULL;
+    NtPath.Length        = 0;
+    NtPath.MaximumLength = 0;
+    if (g_pfnRtlDosPathNameToNtPathName_U(wszTmp, &NtPath, NULL, NULL))
+    {
+        HANDLE      hDir;
+        MY_NTSTATUS rcNt;
+        rcNt = birdOpenFileUniStr(NULL /*hRoot*/,
+                                  &NtPath,
+                                  FILE_READ_DATA  | FILE_LIST_DIRECTORY | FILE_READ_ATTRIBUTES | SYNCHRONIZE,
+                                  FILE_ATTRIBUTE_NORMAL,
+                                  FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                  FILE_OPEN,
+                                  FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+                                  OBJ_CASE_INSENSITIVE,
+                                  &hDir);
+        birdFreeNtPath(&NtPath);
+        if (MY_NT_SUCCESS(rcNt))
+        {
+            PKFSDIR pDir = (PKFSDIR)kFsCacheCreateObject(pCache, &pCache->RootDir, szTmp, 2, wszTmp, 2,
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                                         NULL, 0, NULL, 0,
+#endif
+                                                         KFSOBJ_TYPE_DIR, penmError);
+            if (pDir)
+            {
+                /*
+                 * We need a little bit of extra info for a drive root.  These things are typically
+                 * inherited by subdirectories down the tree, so, we do it all here for till that changes.
+                 */
+                union
+                {
+                    MY_FILE_FS_VOLUME_INFORMATION       VolInfo;
+                    MY_FILE_FS_ATTRIBUTE_INFORMATION    FsAttrInfo;
+                    char abPadding[sizeof(MY_FILE_FS_VOLUME_INFORMATION) + 512];
+                } uBuf;
+                MY_IO_STATUS_BLOCK Ios;
+                KBOOL fRc;
+
+                kHlpAssert(pDir->hDir == INVALID_HANDLE_VALUE);
+                pDir->hDir = hDir;
+
+                if (birdStatHandle(hDir, &pDir->Obj.Stats, pDir->Obj.pszName) == 0)
+                {
+                    pDir->Obj.fHaveStats = K_TRUE;
+                    pDir->uDevNo = pDir->Obj.Stats.st_dev;
+                }
+                else
+                {
+                    /* Just in case. */
+                    pDir->Obj.fHaveStats = K_FALSE;
+                    rcNt = birdQueryVolumeDeviceNumber(hDir, &uBuf.VolInfo, sizeof(uBuf), &pDir->uDevNo);
+                    kHlpAssertMsg(MY_NT_SUCCESS(rcNt), ("%#x\n", rcNt));
+                }
+
+                /* Get the file system. */
+                pDir->Obj.fFlags &= ~(KFSOBJ_F_NTFS | KFSOBJ_F_WORKING_DIR_MTIME);
+                Ios.Information = -1;
+                Ios.u.Status    = -1;
+                rcNt = g_pfnNtQueryVolumeInformationFile(hDir, &Ios, &uBuf.FsAttrInfo, sizeof(uBuf),
+                                                         MyFileFsAttributeInformation);
+                if (MY_NT_SUCCESS(rcNt))
+                    rcNt = Ios.u.Status;
+                if (MY_NT_SUCCESS(rcNt))
+                {
+                    if (   uBuf.FsAttrInfo.FileSystemName[0] == 'N'
+                        && uBuf.FsAttrInfo.FileSystemName[1] == 'T'
+                        && uBuf.FsAttrInfo.FileSystemName[2] == 'F'
+                        && uBuf.FsAttrInfo.FileSystemName[3] == 'S'
+                        && uBuf.FsAttrInfo.FileSystemName[4] == '\0')
+                    {
+                        DWORD dwDriveType = GetDriveTypeW(wszTmp);
+                        if (   dwDriveType == DRIVE_FIXED
+                            || dwDriveType == DRIVE_RAMDISK)
+                            pDir->Obj.fFlags |= KFSOBJ_F_NTFS | KFSOBJ_F_WORKING_DIR_MTIME;
+                    }
+                }
+
+                /*
+                 * Link the new drive letter into the root dir.
+                 */
+                fRc = kFsCacheDirAddChild(pCache, &pCache->RootDir, &pDir->Obj, penmError);
+                kFsCacheObjRelease(pCache, &pDir->Obj);
+                if (fRc)
+                {
+                    pDir->Obj.pNextNameHash = pCache->RootDir.papHashTab[uNameHash];
+                    pCache->RootDir.papHashTab[uNameHash] = &pDir->Obj;
+                    return &pDir->Obj;
+                }
+                return NULL;
+            }
+
+            g_pfnNtClose(hDir);
+            return NULL;
+        }
+
+        /* Assume it doesn't exist if this happens... This may be a little to
+           restrictive wrt status code checks. */
+        kHlpAssertMsgStmtReturn(   rcNt == MY_STATUS_OBJECT_NAME_NOT_FOUND
+                                || rcNt == MY_STATUS_OBJECT_PATH_NOT_FOUND
+                                || rcNt == MY_STATUS_OBJECT_PATH_INVALID
+                                || rcNt == MY_STATUS_OBJECT_PATH_SYNTAX_BAD,
+                                ("%#x\n", rcNt),
+                                *penmError = KFSLOOKUPERROR_DIR_OPEN_ERROR,
+                                NULL);
+    }
+    else
+    {
+        kHlpAssertFailed();
+        *penmError = KFSLOOKUPERROR_OUT_OF_MEMORY;
+        return NULL;
+    }
+
+    /*
+     * Maybe create a missing entry.
+     */
+    if (pCache->fFlags & KFSCACHE_F_MISSING_OBJECTS)
+    {
+        PKFSOBJ pMissing = kFsCacheCreateObject(pCache, &pCache->RootDir, szTmp, 2, wszTmp, 2,
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                        NULL, 0, NULL, 0,
+#endif
+                                        KFSOBJ_TYPE_MISSING, penmError);
+        if (pMissing)
+        {
+            KBOOL fRc = kFsCacheDirAddChild(pCache, &pCache->RootDir, pMissing, penmError);
+            kFsCacheObjRelease(pCache, pMissing);
+            return fRc ? pMissing : NULL;
+        }
+    }
+    else
+    {
+        /** @todo this isn't necessary correct for a root spec.   */
+        *penmError = KFSLOOKUPERROR_PATH_COMP_NOT_FOUND;
+    }
+    return NULL;
+}
+
+
+/**
+ * Slow path that allocates the child hash table and enters the given one.
+ *
+ * Allocation fialures are ignored.
+ *
+ * @param   pCache              The cache (for stats).
+ * @param   pDir                The directory.
+ * @param   uNameHash           The name hash  to enter @a pChild under.
+ * @param   pChild              The child to enter into the hash table.
+ */
+static void kFsCacheDirAllocHashTabAndEnterChild(PKFSCACHE pCache, PKFSDIR pDir, KU32 uNameHash, PKFSOBJ pChild)
+{
+    if (uNameHash != 0) /* paranoia ^ 4! */
+    {
+        /*
+         * Double the current number of children and round up to a multiple of
+         * two so we can avoid division.
+         */
+        KU32 cbHashTab;
+        KU32 cEntries;
+        kHlpAssert(pDir->cChildren > 0);
+        if (pDir->cChildren <= KU32_MAX / 4)
+        {
+#if defined(_MSC_VER) && 1
+            KU32 cEntriesRaw = pDir->cChildren * 2;
+            KU32 cEntriesShift;
+            kHlpAssert(sizeof(cEntries) == (unsigned long));
+            if (_BitScanReverse(&cEntriesShift, cEntriesRaw))
+            {
+                if (   K_BIT32(cEntriesShift) < cEntriesRaw
+                    && cEntriesShift < 31U)
+                    cEntriesShift++;
+                cEntries = K_BIT32(cEntriesShift);
+            }
+            else
+            {
+                kHlpAssertFailed();
+                cEntries = KU32_MAX / 2 + 1;
+            }
+#else
+            cEntries = pDir->cChildren * 2 - 1;
+            cEntries |= cEntries >> 1;
+            cEntries |= cEntries >> 2;
+            cEntries |= cEntries >> 4;
+            cEntries |= cEntries >> 8;
+            cEntries |= cEntries >> 16;
+            cEntries++;
+#endif
+        }
+        else
+            cEntries = KU32_MAX / 2 + 1;
+        kHlpAssert((cEntries & (cEntries -  1)) == 0);
+
+        cbHashTab = cEntries * sizeof(pDir->papHashTab[0]);
+        pDir->papHashTab = (PKFSOBJ *)kHlpAllocZ(cbHashTab);
+        if (pDir->papHashTab)
+        {
+            KU32 idx;
+            pDir->fHashTabMask = cEntries - 1;
+            pCache->cbObjects += cbHashTab;
+            pCache->cChildHashTabs++;
+            pCache->cChildHashEntriesTotal += cEntries;
+
+            /*
+             * Insert it.
+             */
+            pChild->uNameHash     = uNameHash;
+            idx = uNameHash & (pDir->fHashTabMask);
+            pChild->pNextNameHash = pDir->papHashTab[idx];
+            pDir->papHashTab[idx] = pChild;
+            pCache->cChildHashed++;
+        }
+    }
+}
+
+
+/**
+ * Look up a child node, ANSI version.
+ *
+ * @returns Pointer to the child if found, NULL if not.
+ * @param   pCache              The cache.
+ * @param   pParent             The parent directory to search.
+ * @param   pchName             The child name to search for (not terminated).
+ * @param   cchName             The length of the child name.
+ */
+static PKFSOBJ kFsCacheFindChildA(PKFSCACHE pCache, PKFSDIR pParent, const char *pchName, KU32 cchName)
+{
+    /*
+     * Check for '.' first ('..' won't appear).
+     */
+    if (cchName != 1 || *pchName != '.')
+    {
+        PKFSOBJ    *ppCur;
+        KU32        cLeft;
+        KU32        uNameHash;
+
+        /*
+         * Do hash table lookup.
+         *
+         * This caches previous lookups, which should be useful when looking up
+         * intermediate directories at least.
+         */
+        if (pParent->papHashTab != NULL)
+        {
+            PKFSOBJ pCur;
+            uNameHash = kFsCacheStrHashN(pchName, cchName);
+            pCur = pParent->papHashTab[uNameHash & pParent->fHashTabMask];
+            while (pCur)
+            {
+                if (   pCur->uNameHash == uNameHash
+                    && (   (   pCur->cchName == cchName
+                            && _mbsnicmp(pCur->pszName, pchName, cchName) == 0)
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                        || (   pCur->cchShortName == cchName
+                            && pCur->pszShortName != pCur->pszName
+                            && _mbsnicmp(pCur->pszShortName, pchName, cchName) == 0)
+#endif
+                        )
+                   )
+                {
+                    pCache->cChildHashHits++;
+                    pCache->cChildSearches++;
+                    return pCur;
+                }
+                pCur = pCur->pNextNameHash;
+            }
+        }
+        else
+            uNameHash = 0;
+
+        /*
+         * Do linear search.
+         */
+        cLeft = pParent->cChildren;
+        ppCur = pParent->papChildren;
+        while (cLeft-- > 0)
+        {
+            PKFSOBJ pCur = *ppCur++;
+            if (   (   pCur->cchName == cchName
+                    && _mbsnicmp(pCur->pszName, pchName, cchName) == 0)
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                || (   pCur->cchShortName == cchName
+                    && pCur->pszShortName != pCur->pszName
+                    && _mbsnicmp(pCur->pszShortName, pchName, cchName) == 0)
+#endif
+               )
+            {
+                /*
+                 * Consider entering it into the parent hash table.
+                 * Note! We hash the input, not the name we found.
+                 */
+                if (   pCur->uNameHash == 0
+                    && pParent->cChildren >= 2)
+                {
+                    if (pParent->papHashTab)
+                    {
+                        if (uNameHash != 0)
+                        {
+                            KU32 idxNameHash = uNameHash & pParent->fHashTabMask;
+                            pCur->uNameHash     = uNameHash;
+                            pCur->pNextNameHash = pParent->papHashTab[idxNameHash];
+                            pParent->papHashTab[idxNameHash] = pCur;
+                            if (pCur->pNextNameHash)
+                                pCache->cChildHashCollisions++;
+                            pCache->cChildHashed++;
+                        }
+                    }
+                    else
+                        kFsCacheDirAllocHashTabAndEnterChild(pCache, pParent, kFsCacheStrHashN(pchName, cchName), pCur);
+                }
+
+                pCache->cChildSearches++;
+                return pCur;
+            }
+        }
+
+        pCache->cChildSearches++;
+        return NULL;
+    }
+    return &pParent->Obj;
+}
+
+
+/**
+ * Look up a child node, UTF-16 version.
+ *
+ * @returns Pointer to the child if found, NULL if not.
+ * @param   pCache              The cache.
+ * @param   pParent             The parent directory to search.
+ * @param   pwcName             The child name to search for (not terminated).
+ * @param   cwcName             The length of the child name (in wchar_t's).
+ */
+static PKFSOBJ kFsCacheFindChildW(PKFSCACHE pCache, PKFSDIR pParent, const wchar_t *pwcName, KU32 cwcName)
+{
+    /*
+     * Check for '.' first ('..' won't appear).
+     */
+    if (cwcName != 1 || *pwcName != '.')
+    {
+        PKFSOBJ    *ppCur;
+        KU32        cLeft;
+        KU32        uNameHash;
+
+        /*
+         * Do hash table lookup.
+         *
+         * This caches previous lookups, which should be useful when looking up
+         * intermediate directories at least.
+         */
+        if (pParent->papHashTab != NULL)
+        {
+            PKFSOBJ pCur;
+            uNameHash = kFsCacheUtf16HashN(pwcName, cwcName);
+            pCur = pParent->papHashTab[uNameHash & pParent->fHashTabMask];
+            while (pCur)
+            {
+                if (   pCur->uNameHash == uNameHash
+                    && (   (   pCur->cwcName == cwcName
+                            && kFsCacheIAreEqualW(pCur->pwszName, pwcName, cwcName))
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                         || (   pCur->cwcShortName == cwcName
+                             && pCur->pwszShortName != pCur->pwszName
+                             && kFsCacheIAreEqualW(pCur->pwszShortName, pwcName, cwcName))
+#endif
+                       )
+                   )
+                {
+                    pCache->cChildHashHits++;
+                    pCache->cChildSearches++;
+                    return pCur;
+                }
+                pCur = pCur->pNextNameHash;
+            }
+        }
+        else
+            uNameHash = 0;
+
+        /*
+         * Do linear search.
+         */
+        cLeft = pParent->cChildren;
+        ppCur = pParent->papChildren;
+        while (cLeft-- > 0)
+        {
+            PKFSOBJ pCur = *ppCur++;
+            if (   (   pCur->cwcName == cwcName
+                    && kFsCacheIAreEqualW(pCur->pwszName, pwcName, cwcName))
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                || (   pCur->cwcShortName == cwcName
+                    && pCur->pwszShortName != pCur->pwszName
+                    && kFsCacheIAreEqualW(pCur->pwszShortName, pwcName, cwcName))
+#endif
+               )
+            {
+                /*
+                 * Consider entering it into the parent hash table.
+                 * Note! We hash the input, not the name we found.
+                 */
+                if (   pCur->uNameHash == 0
+                    && pParent->cChildren >= 4)
+                {
+                    if (pParent->papHashTab)
+                    {
+                        if (uNameHash != 0)
+                        {
+                            KU32 idxNameHash = uNameHash & pParent->fHashTabMask;
+                            pCur->uNameHash     = uNameHash;
+                            pCur->pNextNameHash = pParent->papHashTab[idxNameHash];
+                            pParent->papHashTab[idxNameHash] = pCur;
+                            if (pCur->pNextNameHash)
+                                pCache->cChildHashCollisions++;
+                            pCache->cChildHashed++;
+                        }
+                    }
+                    else
+                        kFsCacheDirAllocHashTabAndEnterChild(pCache, pParent, kFsCacheUtf16HashN(pwcName, cwcName), pCur);
+                }
+
+                pCache->cChildSearches++;
+                return pCur;
+            }
+        }
+        pCache->cChildSearches++;
+        return NULL;
+    }
+    return &pParent->Obj;
+}
+
+
+/**
+ * Looks up a UNC share, ANSI version.
+ *
+ * We keep both the server and share in the root directory entry.  This means we
+ * have to clean up the entry name before we can insert it.
+ *
+ * @returns Pointer to the share root directory or an update-to-date missing
+ *          node.
+ * @param   pCache              The cache.
+ * @param   pszPath             The path.
+ * @param   fFlags              Lookup flags, KFSCACHE_LOOKUP_F_XXX.
+ * @param   poff                Where to return the root dire.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ */
+static PKFSOBJ kFsCacheLookupUncShareA(PKFSCACHE pCache, const char *pszPath, KU32 fFlags,
+                                       KU32 *poff, KFSLOOKUPERROR *penmError)
+{
+    /*
+     * Special case: Long path prefix w/ drive letter following it.
+     * Note! Must've been converted from wide char to ANSI.
+     */
+    if (   IS_SLASH(pszPath[0])
+        && IS_SLASH(pszPath[1])
+        && pszPath[2] == '?'
+        && IS_SLASH(pszPath[3])
+        && IS_ALPHA(pszPath[4])
+        && pszPath[5] == ':'
+        && IS_SLASH(pszPath[6]) )
+    {
+        *poff = 4 + 2;
+        return kFsCacheLookupDrive(pCache, pszPath[4], fFlags, penmError);
+    }
+
+#if 0 /* later */
+    KU32 offStartServer;
+    KU32 offEndServer;
+    KU32 offStartShare;
+
+    KU32 offEnd = 2;
+    while (IS_SLASH(pszPath[offEnd]))
+        offEnd++;
+
+    offStartServer = offEnd;
+    while (   (ch = pszPath[offEnd]) != '\0'
+           && !IS_SLASH(ch))
+        offEnd++;
+    offEndServer = offEnd;
+
+    if (ch != '\0')
+    { /* likely */ }
+    else
+    {
+        *penmError = KFSLOOKUPERROR_NOT_FOUND;
+        return NULL;
+    }
+
+    while (IS_SLASH(pszPath[offEnd]))
+        offEnd++;
+    offStartServer = offEnd;
+    while (   (ch = pszPath[offEnd]) != '\0'
+           && !IS_SLASH(ch))
+        offEnd++;
+#endif
+    *penmError = KFSLOOKUPERROR_UNSUPPORTED;
+    return NULL;
+}
+
+
+/**
+ * Looks up a UNC share, UTF-16 version.
+ *
+ * We keep both the server and share in the root directory entry.  This means we
+ * have to clean up the entry name before we can insert it.
+ *
+ * @returns Pointer to the share root directory or an update-to-date missing
+ *          node.
+ * @param   pCache              The cache.
+ * @param   pwszPath            The path.
+ * @param   fFlags              Lookup flags, KFSCACHE_LOOKUP_F_XXX.
+ * @param   poff                Where to return the root dir.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ */
+static PKFSOBJ kFsCacheLookupUncShareW(PKFSCACHE pCache, const wchar_t *pwszPath, KU32 fFlags,
+                                       KU32 *poff, KFSLOOKUPERROR *penmError)
+{
+    /*
+     * Special case: Long path prefix w/ drive letter following it.
+     */
+    if (   IS_SLASH(pwszPath[0])
+        && IS_SLASH(pwszPath[1])
+        && pwszPath[2] == '?'
+        && IS_SLASH(pwszPath[3])
+        && IS_ALPHA(pwszPath[4])
+        && pwszPath[5] == ':'
+        && IS_SLASH(pwszPath[6]) )
+    {
+        *poff = 4 + 2;
+        return kFsCacheLookupDrive(pCache, (char)pwszPath[4], fFlags, penmError);
+    }
+
+
+#if 0 /* later */
+    KU32 offStartServer;
+    KU32 offEndServer;
+    KU32 offStartShare;
+
+    KU32 offEnd = 2;
+    while (IS_SLASH(pwszPath[offEnd]))
+        offEnd++;
+
+    offStartServer = offEnd;
+    while (   (ch = pwszPath[offEnd]) != '\0'
+           && !IS_SLASH(ch))
+        offEnd++;
+    offEndServer = offEnd;
+
+    if (ch != '\0')
+    { /* likely */ }
+    else
+    {
+        *penmError = KFSLOOKUPERROR_NOT_FOUND;
+        return NULL;
+    }
+
+    while (IS_SLASH(pwszPath[offEnd]))
+        offEnd++;
+    offStartServer = offEnd;
+    while (   (ch = pwszPath[offEnd]) != '\0'
+           && !IS_SLASH(ch))
+        offEnd++;
+#endif
+    *penmError = KFSLOOKUPERROR_UNSUPPORTED;
+    return NULL;
+}
+
+
+/**
+ * Walks an full path relative to the given directory, ANSI version.
+ *
+ * This will create any missing nodes while walking.
+ *
+ * The caller will have to do the path hash table insertion of the result.
+ *
+ * @returns Pointer to the tree node corresponding to @a pszPath.
+ *          NULL on lookup failure, see @a penmError for details.
+ * @param   pCache              The cache.
+ * @param   pParent             The directory to start the lookup in.
+ * @param   pszPath             The path to walk.
+ * @param   cchPath             The length of the path.
+ * @param   fFlags              Lookup flags, KFSCACHE_LOOKUP_F_XXX.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ * @param   ppLastAncestor      Where to return the last parent element found
+ *                              (referenced) in case of error like an path/file
+ *                              not found problem.  Optional.
+ */
+PKFSOBJ kFsCacheLookupRelativeToDirA(PKFSCACHE pCache, PKFSDIR pParent, const char *pszPath, KU32 cchPath, KU32 fFlags,
+                                     KFSLOOKUPERROR *penmError, PKFSOBJ *ppLastAncestor)
+{
+    /*
+     * Walk loop.
+     */
+    KU32 off = 0;
+    if (ppLastAncestor)
+        *ppLastAncestor = NULL;
+    KFSCACHE_LOCK(pCache);
+    for (;;)
+    {
+        PKFSOBJ pChild;
+
+        /*
+         * Find the end of the component, counting trailing slashes.
+         */
+        char    ch;
+        KU32    cchSlashes = 0;
+        KU32    offEnd     = off + 1;
+        while ((ch = pszPath[offEnd]) != '\0')
+        {
+            if (!IS_SLASH(ch))
+                offEnd++;
+            else
+            {
+                do
+                    cchSlashes++;
+                while (IS_SLASH(pszPath[offEnd + cchSlashes]));
+                break;
+            }
+        }
+
+        /*
+         * Do we need to populate or refresh this directory first?
+         */
+        if (   !pParent->fNeedRePopulating
+            && pParent->fPopulated
+            && (   pParent->Obj.uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+                || pParent->Obj.uCacheGen == pCache->auGenerations[pParent->Obj.fFlags & KFSOBJ_F_USE_CUSTOM_GEN]) )
+        { /* likely */ }
+        else if (   (fFlags & (KFSCACHE_LOOKUP_F_NO_INSERT | KFSCACHE_LOOKUP_F_NO_REFRESH))
+                 || kFsCachePopuplateOrRefreshDir(pCache, pParent, penmError))
+        { /* likely */ }
+        else
+        {
+            if (ppLastAncestor)
+                *ppLastAncestor = kFsCacheObjRetainInternal(&pParent->Obj);
+            KFSCACHE_UNLOCK(pCache);
+            return NULL;
+        }
+
+        /*
+         * Search the current node for the name.
+         *
+         * If we don't find it, we may insert a missing node depending on
+         * the cache configuration.
+         */
+        pChild = kFsCacheFindChildA(pCache, pParent, &pszPath[off], offEnd - off);
+        if (pChild != NULL)
+        { /* probably likely */ }
+        else
+        {
+            if (    (pCache->fFlags & KFSCACHE_F_MISSING_OBJECTS)
+                && !(fFlags & KFSCACHE_LOOKUP_F_NO_INSERT))
+                pChild = kFsCacheCreateMissingA(pCache, pParent, &pszPath[off], offEnd - off, penmError);
+            if (cchSlashes == 0 || offEnd + cchSlashes >= cchPath)
+            {
+                if (pChild)
+                {
+                    kFsCacheObjRetainInternal(pChild);
+                    KFSCACHE_UNLOCK(pCache);
+                    return pChild;
+                }
+                *penmError = KFSLOOKUPERROR_NOT_FOUND;
+            }
+            else
+                *penmError = KFSLOOKUPERROR_PATH_COMP_NOT_FOUND;
+            if (ppLastAncestor)
+                *ppLastAncestor = kFsCacheObjRetainInternal(&pParent->Obj);
+            KFSCACHE_UNLOCK(pCache);
+            return NULL;
+        }
+
+        /* Advance off and check if we're done already. */
+        off = offEnd + cchSlashes;
+        if (   cchSlashes == 0
+            || off >= cchPath)
+        {
+            if (   pChild->bObjType != KFSOBJ_TYPE_MISSING
+                || pChild->uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+                || pChild->uCacheGen == pCache->auGenerationsMissing[pChild->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                || (fFlags & KFSCACHE_LOOKUP_F_NO_REFRESH)
+                || kFsCacheRefreshMissing(pCache, pChild, penmError) )
+            { /* likely */ }
+            else
+            {
+                if (ppLastAncestor)
+                    *ppLastAncestor = kFsCacheObjRetainInternal(&pParent->Obj);
+                KFSCACHE_UNLOCK(pCache);
+                return NULL;
+            }
+            kFsCacheObjRetainInternal(pChild);
+            KFSCACHE_UNLOCK(pCache);
+            return pChild;
+        }
+
+        /*
+         * Check that it's a directory.  If a missing entry, we may have to
+         * refresh it and re-examin it.
+         */
+        if (pChild->bObjType == KFSOBJ_TYPE_DIR)
+            pParent = (PKFSDIR)pChild;
+        else if (pChild->bObjType != KFSOBJ_TYPE_MISSING)
+        {
+            *penmError = KFSLOOKUPERROR_PATH_COMP_NOT_DIR;
+            if (ppLastAncestor)
+                *ppLastAncestor = kFsCacheObjRetainInternal(&pParent->Obj);
+            KFSCACHE_UNLOCK(pCache);
+            return NULL;
+        }
+        else if (   pChild->uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+                 || pChild->uCacheGen == pCache->auGenerationsMissing[pChild->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                 || (fFlags & KFSCACHE_LOOKUP_F_NO_REFRESH))
+        {
+            *penmError = KFSLOOKUPERROR_PATH_COMP_NOT_FOUND;
+            if (ppLastAncestor)
+                *ppLastAncestor = kFsCacheObjRetainInternal(&pParent->Obj);
+            KFSCACHE_UNLOCK(pCache);
+            return NULL;
+        }
+        else if (kFsCacheRefreshMissingIntermediateDir(pCache, pChild, penmError))
+            pParent = (PKFSDIR)pChild;
+        else
+        {
+            if (ppLastAncestor)
+                *ppLastAncestor = kFsCacheObjRetainInternal(&pParent->Obj);
+            KFSCACHE_UNLOCK(pCache);
+            return NULL;
+        }
+    }
+
+    /* not reached */
+    KFSCACHE_UNLOCK(pCache);
+    return NULL;
+}
+
+
+/**
+ * Walks an full path relative to the given directory, UTF-16 version.
+ *
+ * This will create any missing nodes while walking.
+ *
+ * The caller will have to do the path hash table insertion of the result.
+ *
+ * @returns Pointer to the tree node corresponding to @a pszPath.
+ *          NULL on lookup failure, see @a penmError for details.
+ * @param   pCache              The cache.
+ * @param   pParent             The directory to start the lookup in.
+ * @param   pszPath             The path to walk.  No dot-dot bits allowed!
+ * @param   cchPath             The length of the path.
+ * @param   fFlags              Lookup flags, KFSCACHE_LOOKUP_F_XXX.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ * @param   ppLastAncestor      Where to return the last parent element found
+ *                              (referenced) in case of error like an path/file
+ *                              not found problem.  Optional.
+ */
+PKFSOBJ kFsCacheLookupRelativeToDirW(PKFSCACHE pCache, PKFSDIR pParent, const wchar_t *pwszPath, KU32 cwcPath, KU32 fFlags,
+                                     KFSLOOKUPERROR *penmError, PKFSOBJ *ppLastAncestor)
+{
+    /*
+     * Walk loop.
+     */
+    KU32 off = 0;
+    if (ppLastAncestor)
+        *ppLastAncestor = NULL;
+    KFSCACHE_LOCK(pCache);
+    for (;;)
+    {
+        PKFSOBJ pChild;
+
+        /*
+         * Find the end of the component, counting trailing slashes.
+         */
+        wchar_t wc;
+        KU32    cwcSlashes = 0;
+        KU32    offEnd     = off + 1;
+        while ((wc = pwszPath[offEnd]) != '\0')
+        {
+            if (!IS_SLASH(wc))
+                offEnd++;
+            else
+            {
+                do
+                    cwcSlashes++;
+                while (IS_SLASH(pwszPath[offEnd + cwcSlashes]));
+                break;
+            }
+        }
+
+        /*
+         * Do we need to populate or refresh this directory first?
+         */
+        if (   !pParent->fNeedRePopulating
+            && pParent->fPopulated
+            && (   pParent->Obj.uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+                || pParent->Obj.uCacheGen == pCache->auGenerations[pParent->Obj.fFlags & KFSOBJ_F_USE_CUSTOM_GEN]) )
+        { /* likely */ }
+        else if (   (fFlags & (KFSCACHE_LOOKUP_F_NO_INSERT | KFSCACHE_LOOKUP_F_NO_REFRESH))
+                 || kFsCachePopuplateOrRefreshDir(pCache, pParent, penmError))
+        { /* likely */ }
+        else
+        {
+            if (ppLastAncestor)
+                *ppLastAncestor = kFsCacheObjRetainInternal(&pParent->Obj);
+            KFSCACHE_UNLOCK(pCache);
+            return NULL;
+        }
+
+        /*
+         * Search the current node for the name.
+         *
+         * If we don't find it, we may insert a missing node depending on
+         * the cache configuration.
+         */
+        pChild = kFsCacheFindChildW(pCache, pParent, &pwszPath[off], offEnd - off);
+        if (pChild != NULL)
+        { /* probably likely */ }
+        else
+        {
+            if (    (pCache->fFlags & KFSCACHE_F_MISSING_OBJECTS)
+                && !(fFlags & KFSCACHE_LOOKUP_F_NO_INSERT))
+                pChild = kFsCacheCreateMissingW(pCache, pParent, &pwszPath[off], offEnd - off, penmError);
+            if (cwcSlashes == 0 || offEnd + cwcSlashes >= cwcPath)
+            {
+                if (pChild)
+                {
+                    kFsCacheObjRetainInternal(pChild);
+                    KFSCACHE_UNLOCK(pCache);
+                    return pChild;
+                }
+                *penmError = KFSLOOKUPERROR_NOT_FOUND;
+            }
+            else
+                *penmError = KFSLOOKUPERROR_PATH_COMP_NOT_FOUND;
+            if (ppLastAncestor)
+                *ppLastAncestor = kFsCacheObjRetainInternal(&pParent->Obj);
+            KFSCACHE_UNLOCK(pCache);
+            return NULL;
+        }
+
+        /* Advance off and check if we're done already. */
+        off = offEnd + cwcSlashes;
+        if (   cwcSlashes == 0
+            || off >= cwcPath)
+        {
+            if (   pChild->bObjType != KFSOBJ_TYPE_MISSING
+                || pChild->uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+                || pChild->uCacheGen == pCache->auGenerationsMissing[pChild->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                || (fFlags & KFSCACHE_LOOKUP_F_NO_REFRESH)
+                || kFsCacheRefreshMissing(pCache, pChild, penmError) )
+            { /* likely */ }
+            else
+            {
+                if (ppLastAncestor)
+                    *ppLastAncestor = kFsCacheObjRetainInternal(&pParent->Obj);
+                KFSCACHE_UNLOCK(pCache);
+                return NULL;
+            }
+            kFsCacheObjRetainInternal(pChild);
+            KFSCACHE_UNLOCK(pCache);
+            return pChild;
+        }
+
+        /*
+         * Check that it's a directory.  If a missing entry, we may have to
+         * refresh it and re-examin it.
+         */
+        if (pChild->bObjType == KFSOBJ_TYPE_DIR)
+            pParent = (PKFSDIR)pChild;
+        else if (pChild->bObjType != KFSOBJ_TYPE_MISSING)
+        {
+            *penmError = KFSLOOKUPERROR_PATH_COMP_NOT_DIR;
+            if (ppLastAncestor)
+                *ppLastAncestor = kFsCacheObjRetainInternal(&pParent->Obj);
+            KFSCACHE_UNLOCK(pCache);
+            return NULL;
+        }
+        else if (   pChild->uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+                 || pChild->uCacheGen == pCache->auGenerationsMissing[pChild->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                 || (fFlags & KFSCACHE_LOOKUP_F_NO_REFRESH) )
+
+        {
+            *penmError = KFSLOOKUPERROR_PATH_COMP_NOT_FOUND;
+            if (ppLastAncestor)
+                *ppLastAncestor = kFsCacheObjRetainInternal(&pParent->Obj);
+            KFSCACHE_UNLOCK(pCache);
+            return NULL;
+        }
+        else if (kFsCacheRefreshMissingIntermediateDir(pCache, pChild, penmError))
+            pParent = (PKFSDIR)pChild;
+        else
+        {
+            if (ppLastAncestor)
+                *ppLastAncestor = kFsCacheObjRetainInternal(&pParent->Obj);
+            KFSCACHE_UNLOCK(pCache);
+            return NULL;
+        }
+    }
+
+    KFSCACHE_UNLOCK(pCache);
+    return NULL;
+}
+
+/**
+ * Walk the file system tree for the given absolute path, entering it into the
+ * hash table.
+ *
+ * This will create any missing nodes while walking.
+ *
+ * The caller will have to do the path hash table insertion of the result.
+ *
+ * @returns Pointer to the tree node corresponding to @a pszPath.
+ *          NULL on lookup failure, see @a penmError for details.
+ * @param   pCache              The cache.
+ * @param   pszPath             The path to walk. No dot-dot bits allowed!
+ * @param   cchPath             The length of the path.
+ * @param   fFlags              Lookup flags, KFSCACHE_LOOKUP_F_XXX.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ * @param   ppLastAncestor      Where to return the last parent element found
+ *                              (referenced) in case of error an path/file not
+ *                              found problem.  Optional.
+ */
+static PKFSOBJ kFsCacheLookupAbsoluteA(PKFSCACHE pCache, const char *pszPath, KU32 cchPath, KU32 fFlags,
+                                       KFSLOOKUPERROR *penmError, PKFSOBJ *ppLastAncestor)
+{
+    PKFSOBJ     pRoot;
+    KU32        cchSlashes;
+    KU32        offEnd;
+
+    KFSCACHE_LOG2(("kFsCacheLookupAbsoluteA(%s)\n", pszPath));
+
+    /*
+     * The root "directory" needs special handling, so we keep it outside the
+     * main search loop. (Special: Cannot enumerate it, UNCs, ++.)
+     */
+    cchSlashes = 0;
+    if (   pszPath[1] == ':'
+        && IS_ALPHA(pszPath[0]))
+    {
+        /* Drive letter. */
+        offEnd = 2;
+        kHlpAssert(IS_SLASH(pszPath[2]));
+        pRoot = kFsCacheLookupDrive(pCache, toupper(pszPath[0]), fFlags, penmError);
+    }
+    else if (   IS_SLASH(pszPath[0])
+             && IS_SLASH(pszPath[1]) )
+        pRoot = kFsCacheLookupUncShareA(pCache, pszPath, fFlags, &offEnd, penmError);
+    else
+    {
+        *penmError = KFSLOOKUPERROR_UNSUPPORTED;
+        return NULL;
+    }
+    if (pRoot)
+    { /* likely */ }
+    else
+        return NULL;
+
+    /* Count slashes trailing the root spec. */
+    if (offEnd < cchPath)
+    {
+        kHlpAssert(IS_SLASH(pszPath[offEnd]));
+        do
+            cchSlashes++;
+        while (IS_SLASH(pszPath[offEnd + cchSlashes]));
+    }
+
+    /* Done already? */
+    if (offEnd >= cchPath)
+    {
+        if (   pRoot->uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+            || pRoot->uCacheGen == (  pRoot->bObjType != KFSOBJ_TYPE_MISSING
+                                    ? pCache->auGenerations[       pRoot->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                                    : pCache->auGenerationsMissing[pRoot->fFlags & KFSOBJ_F_USE_CUSTOM_GEN])
+            || (fFlags & KFSCACHE_LOOKUP_F_NO_REFRESH)
+            || kFsCacheRefreshObj(pCache, pRoot, penmError))
+            return kFsCacheObjRetainInternal(pRoot);
+        if (ppLastAncestor)
+            *ppLastAncestor = kFsCacheObjRetainInternal(pRoot);
+        return NULL;
+    }
+
+    /* Check that we've got a valid result and not a cached negative one. */
+    if (pRoot->bObjType == KFSOBJ_TYPE_DIR)
+    { /* likely */ }
+    else
+    {
+        kHlpAssert(pRoot->bObjType == KFSOBJ_TYPE_MISSING);
+        kHlpAssert(   pRoot->uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+                   || pRoot->uCacheGen == pCache->auGenerationsMissing[pRoot->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]);
+        return pRoot;
+    }
+
+    /*
+     * Now that we've found a valid root directory, lookup the
+     * remainder of the path starting with it.
+     */
+    return kFsCacheLookupRelativeToDirA(pCache, (PKFSDIR)pRoot, &pszPath[offEnd + cchSlashes],
+                                        cchPath - offEnd - cchSlashes, fFlags, penmError, ppLastAncestor);
+}
+
+
+/**
+ * Walk the file system tree for the given absolute path, UTF-16 version.
+ *
+ * This will create any missing nodes while walking.
+ *
+ * The caller will have to do the path hash table insertion of the result.
+ *
+ * @returns Pointer to the tree node corresponding to @a pszPath.
+ *          NULL on lookup failure, see @a penmError for details.
+ * @param   pCache              The cache.
+ * @param   pwszPath            The path to walk.
+ * @param   cwcPath             The length of the path (in wchar_t's).
+ * @param   fFlags              Lookup flags, KFSCACHE_LOOKUP_F_XXX.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ * @param   ppLastAncestor      Where to return the last parent element found
+ *                              (referenced) in case of error an path/file not
+ *                              found problem.  Optional.
+ */
+static PKFSOBJ kFsCacheLookupAbsoluteW(PKFSCACHE pCache, const wchar_t *pwszPath, KU32 cwcPath, KU32 fFlags,
+                                       KFSLOOKUPERROR *penmError, PKFSOBJ *ppLastAncestor)
+{
+    PKFSDIR     pParent = &pCache->RootDir;
+    PKFSOBJ     pRoot;
+    KU32        off;
+    KU32        cwcSlashes;
+    KU32        offEnd;
+
+    KFSCACHE_LOG2(("kFsCacheLookupAbsoluteW(%ls)\n", pwszPath));
+
+    /*
+     * The root "directory" needs special handling, so we keep it outside the
+     * main search loop. (Special: Cannot enumerate it, UNCs, ++.)
+     */
+    cwcSlashes = 0;
+    off        = 0;
+    if (   pwszPath[1] == ':'
+        && IS_ALPHA(pwszPath[0]))
+    {
+        /* Drive letter. */
+        offEnd = 2;
+        kHlpAssert(IS_SLASH(pwszPath[2]));
+        pRoot = kFsCacheLookupDrive(pCache, toupper(pwszPath[0]), fFlags, penmError);
+    }
+    else if (   IS_SLASH(pwszPath[0])
+             && IS_SLASH(pwszPath[1]) )
+        pRoot = kFsCacheLookupUncShareW(pCache, pwszPath, fFlags, &offEnd, penmError);
+    else
+    {
+        *penmError = KFSLOOKUPERROR_UNSUPPORTED;
+        return NULL;
+    }
+    if (pRoot)
+    { /* likely */ }
+    else
+        return NULL;
+
+    /* Count slashes trailing the root spec. */
+    if (offEnd < cwcPath)
+    {
+        kHlpAssert(IS_SLASH(pwszPath[offEnd]));
+        do
+            cwcSlashes++;
+        while (IS_SLASH(pwszPath[offEnd + cwcSlashes]));
+    }
+
+    /* Done already? */
+    if (offEnd >= cwcPath)
+    {
+        if (   pRoot->uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+            || pRoot->uCacheGen == (pRoot->bObjType != KFSOBJ_TYPE_MISSING
+                                    ? pCache->auGenerations[       pRoot->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                                    : pCache->auGenerationsMissing[pRoot->fFlags & KFSOBJ_F_USE_CUSTOM_GEN])
+            || (fFlags & KFSCACHE_LOOKUP_F_NO_REFRESH)
+            || kFsCacheRefreshObj(pCache, pRoot, penmError))
+            return kFsCacheObjRetainInternal(pRoot);
+        if (ppLastAncestor)
+            *ppLastAncestor = kFsCacheObjRetainInternal(pRoot);
+        return NULL;
+    }
+
+    /* Check that we've got a valid result and not a cached negative one. */
+    if (pRoot->bObjType == KFSOBJ_TYPE_DIR)
+    { /* likely */ }
+    else
+    {
+        kHlpAssert(pRoot->bObjType == KFSOBJ_TYPE_MISSING);
+        kHlpAssert(   pRoot->uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+                   || pRoot->uCacheGen == pCache->auGenerationsMissing[pRoot->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]);
+        return pRoot;
+    }
+
+    /*
+     * Now that we've found a valid root directory, lookup the
+     * remainder of the path starting with it.
+     */
+    return kFsCacheLookupRelativeToDirW(pCache, (PKFSDIR)pRoot, &pwszPath[offEnd + cwcSlashes],
+                                        cwcPath - offEnd - cwcSlashes, fFlags, penmError, ppLastAncestor);
+}
+
+
+/**
+ * This deals with paths that are relative and paths that contains '..'
+ * elements, ANSI version.
+ *
+ * @returns Pointer to object corresponding to @a pszPath on success.
+ *          NULL if this isn't a path we care to cache.
+ *
+ * @param   pCache              The cache.
+ * @param   pszPath             The path.
+ * @param   cchPath             The length of the path.
+ * @param   fFlags              Lookup flags, KFSCACHE_LOOKUP_F_XXX.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ * @param   ppLastAncestor      Where to return the last parent element found
+ *                              (referenced) in case of error an path/file not
+ *                              found problem.  Optional.
+ */
+static PKFSOBJ kFsCacheLookupSlowA(PKFSCACHE pCache, const char *pszPath, KU32 cchPath, KU32 fFlags,
+                                   KFSLOOKUPERROR *penmError, PKFSOBJ *ppLastAncestor)
+{
+    /*
+     * We just call GetFullPathNameA here to do the job as getcwd and _getdcwd
+     * ends up calling it anyway.
+     */
+    char szFull[KFSCACHE_CFG_MAX_PATH];
+    UINT cchFull = GetFullPathNameA(pszPath, sizeof(szFull), szFull, NULL);
+    if (   cchFull >= 3
+        && cchFull < sizeof(szFull))
+    {
+        KFSCACHE_LOG2(("kFsCacheLookupSlowA(%s)\n", pszPath));
+        return kFsCacheLookupAbsoluteA(pCache, szFull, cchFull, fFlags, penmError, ppLastAncestor);
+    }
+
+    /* The path is too long! */
+    kHlpAssertMsgFailed(("'%s' -> cchFull=%u\n", pszPath, cchFull));
+    *penmError = cchFull >= 3 ? KFSLOOKUPERROR_PATH_TOO_LONG : KFSLOOKUPERROR_PATH_TOO_SHORT;
+    return NULL;
+}
+
+
+/**
+ * This deals with paths that are relative and paths that contains '..'
+ * elements, UTF-16 version.
+ *
+ * @returns Pointer to object corresponding to @a pszPath on success.
+ *          NULL if this isn't a path we care to cache.
+ *
+ * @param   pCache              The cache.
+ * @param   pwszPath            The path.
+ * @param   cwcPath             The length of the path (in wchar_t's).
+ * @param   fFlags              Lookup flags, KFSCACHE_LOOKUP_F_XXX.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ * @param   ppLastAncestor      Where to return the last parent element found
+ *                              (referenced) in case of error an path/file not
+ *                              found problem.  Optional.
+ */
+static PKFSOBJ kFsCacheLookupSlowW(PKFSCACHE pCache, const wchar_t *pwszPath, KU32 wcwPath, KU32 fFlags,
+                                   KFSLOOKUPERROR *penmError, PKFSOBJ *ppLastAncestor)
+{
+    /*
+     * We just call GetFullPathNameA here to do the job as getcwd and _getdcwd
+     * ends up calling it anyway.
+     */
+    wchar_t wszFull[KFSCACHE_CFG_MAX_PATH];
+    UINT cwcFull = GetFullPathNameW(pwszPath, KFSCACHE_CFG_MAX_PATH, wszFull, NULL);
+    if (   cwcFull >= 3
+        && cwcFull < KFSCACHE_CFG_MAX_PATH)
+    {
+        KFSCACHE_LOG2(("kFsCacheLookupSlowA(%ls)\n", pwszPath));
+        return kFsCacheLookupAbsoluteW(pCache, wszFull, cwcFull, fFlags, penmError, ppLastAncestor);
+    }
+
+    /* The path is too long! */
+    kHlpAssertMsgFailed(("'%ls' -> cwcFull=%u\n", pwszPath, cwcFull));
+    *penmError = cwcFull >= 3 ? KFSLOOKUPERROR_PATH_TOO_LONG : KFSLOOKUPERROR_PATH_TOO_SHORT;
+    return NULL;
+}
+
+
+/**
+ * Refreshes a path hash that has expired, ANSI version.
+ *
+ * @returns pHash on success, NULL if removed.
+ * @param   pCache              The cache.
+ * @param   pHashEntry          The path hash.
+ * @param   idxHashTab          The hash table entry.
+ */
+static PKFSHASHA kFsCacheRefreshPathA(PKFSCACHE pCache, PKFSHASHA pHashEntry, KU32 idxHashTab)
+{
+    PKFSOBJ pLastAncestor = NULL;
+    if (!pHashEntry->pFsObj)
+    {
+        if (pHashEntry->fAbsolute)
+            pHashEntry->pFsObj = kFsCacheLookupAbsoluteA(pCache, pHashEntry->pszPath, pHashEntry->cchPath, 0 /*fFlags*/,
+                                                         &pHashEntry->enmError, &pLastAncestor);
+        else
+            pHashEntry->pFsObj = kFsCacheLookupSlowA(pCache, pHashEntry->pszPath, pHashEntry->cchPath, 0 /*fFlags*/,
+                                                     &pHashEntry->enmError, &pLastAncestor);
+    }
+    else
+    {
+        KU8             bOldType = pHashEntry->pFsObj->bObjType;
+        KFSLOOKUPERROR  enmError;
+        if (kFsCacheRefreshObj(pCache, pHashEntry->pFsObj, &enmError))
+        {
+            if (pHashEntry->pFsObj->bObjType == bOldType)
+            { }
+            else
+            {
+                pHashEntry->pFsObj->cPathHashRefs -= 1;
+                kFsCacheObjRelease(pCache, pHashEntry->pFsObj);
+                if (pHashEntry->fAbsolute)
+                    pHashEntry->pFsObj = kFsCacheLookupAbsoluteA(pCache, pHashEntry->pszPath, pHashEntry->cchPath, 0 /*fFlags*/,
+                                                                 &pHashEntry->enmError, &pLastAncestor);
+                else
+                    pHashEntry->pFsObj = kFsCacheLookupSlowA(pCache, pHashEntry->pszPath, pHashEntry->cchPath, 0 /*fFlags*/,
+                                                             &pHashEntry->enmError, &pLastAncestor);
+            }
+        }
+        else
+        {
+            fprintf(stderr, "kFsCacheRefreshPathA - refresh failure handling not implemented!\n");
+            __debugbreak();
+            /** @todo just remove this entry.   */
+            return NULL;
+        }
+    }
+
+    if (pLastAncestor && !pHashEntry->pFsObj)
+        pHashEntry->idxMissingGen = pLastAncestor->fFlags & KFSOBJ_F_USE_CUSTOM_GEN;
+    pHashEntry->uCacheGen = !pHashEntry->pFsObj
+                          ? pCache->auGenerationsMissing[pHashEntry->idxMissingGen]
+                          : pHashEntry->pFsObj->bObjType == KFSOBJ_TYPE_MISSING
+                          ? pCache->auGenerationsMissing[pHashEntry->pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                          : pCache->auGenerations[       pHashEntry->pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN];
+    if (pLastAncestor)
+        kFsCacheObjRelease(pCache, pLastAncestor);
+    return pHashEntry;
+}
+
+
+/**
+ * Refreshes a path hash that has expired, UTF-16 version.
+ *
+ * @returns pHash on success, NULL if removed.
+ * @param   pCache              The cache.
+ * @param   pHashEntry          The path hash.
+ * @param   idxHashTab          The hash table entry.
+ */
+static PKFSHASHW kFsCacheRefreshPathW(PKFSCACHE pCache, PKFSHASHW pHashEntry, KU32 idxHashTab)
+{
+    PKFSOBJ pLastAncestor = NULL;
+    if (!pHashEntry->pFsObj)
+    {
+        if (pHashEntry->fAbsolute)
+            pHashEntry->pFsObj = kFsCacheLookupAbsoluteW(pCache, pHashEntry->pwszPath, pHashEntry->cwcPath, 0 /*fFlags*/,
+                                                         &pHashEntry->enmError, &pLastAncestor);
+        else
+            pHashEntry->pFsObj = kFsCacheLookupSlowW(pCache, pHashEntry->pwszPath, pHashEntry->cwcPath, 0 /*fFlags*/,
+                                                     &pHashEntry->enmError, &pLastAncestor);
+    }
+    else
+    {
+        KU8             bOldType = pHashEntry->pFsObj->bObjType;
+        KFSLOOKUPERROR  enmError;
+        if (kFsCacheRefreshObj(pCache, pHashEntry->pFsObj, &enmError))
+        {
+            if (pHashEntry->pFsObj->bObjType == bOldType)
+            { }
+            else
+            {
+                pHashEntry->pFsObj->cPathHashRefs -= 1;
+                kFsCacheObjRelease(pCache, pHashEntry->pFsObj);
+                if (pHashEntry->fAbsolute)
+                    pHashEntry->pFsObj = kFsCacheLookupAbsoluteW(pCache, pHashEntry->pwszPath, pHashEntry->cwcPath, 0 /*fFlags*/,
+                                                                 &pHashEntry->enmError, &pLastAncestor);
+                else
+                    pHashEntry->pFsObj = kFsCacheLookupSlowW(pCache, pHashEntry->pwszPath, pHashEntry->cwcPath, 0 /*fFlags*/,
+                                                             &pHashEntry->enmError, &pLastAncestor);
+            }
+        }
+        else
+        {
+            fprintf(stderr, "kFsCacheRefreshPathW - refresh failure handling not implemented!\n");
+            fflush(stderr);
+            __debugbreak();
+            /** @todo just remove this entry.   */
+            return NULL;
+        }
+    }
+    if (pLastAncestor && !pHashEntry->pFsObj)
+        pHashEntry->idxMissingGen = pLastAncestor->fFlags & KFSOBJ_F_USE_CUSTOM_GEN;
+    pHashEntry->uCacheGen = !pHashEntry->pFsObj
+                          ? pCache->auGenerationsMissing[pHashEntry->idxMissingGen]
+                          : pHashEntry->pFsObj->bObjType == KFSOBJ_TYPE_MISSING
+                          ? pCache->auGenerationsMissing[pHashEntry->pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                          : pCache->auGenerations[       pHashEntry->pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN];
+    if (pLastAncestor)
+        kFsCacheObjRelease(pCache, pLastAncestor);
+    return pHashEntry;
+}
+
+
+/**
+ * Internal lookup worker that looks up a KFSOBJ for the given ANSI path with
+ * length and hash.
+ *
+ * This will first try the hash table.  If not in the hash table, the file
+ * system cache tree is walked, missing bits filled in and finally a hash table
+ * entry is created.
+ *
+ * Only drive letter paths are cachable.  We don't do any UNC paths at this
+ * point.
+ *
+ * @returns Reference to object corresponding to @a pszPath on success, this
+ *          must be released by kFsCacheObjRelease.
+ *          NULL if not a path we care to cache.
+ * @param   pCache              The cache.
+ * @param   pchPath             The path to lookup.
+ * @param   cchPath             The path length.
+ * @param   uHashPath           The hash of the path.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ */
+static PKFSOBJ kFsCacheLookupHashedA(PKFSCACHE pCache, const char *pchPath, KU32 cchPath, KU32 uHashPath,
+                                     KFSLOOKUPERROR *penmError)
+{
+    /*
+     * Do hash table lookup of the path.
+     */
+    KU32        idxHashTab = uHashPath % K_ELEMENTS(pCache->apAnsiPaths);
+    PKFSHASHA   pHashEntry = pCache->apAnsiPaths[idxHashTab];
+    kHlpAssert(pCache->u32Magic == KFSCACHE_MAGIC);
+    if (pHashEntry)
+    {
+        do
+        {
+            if (   pHashEntry->uHashPath == uHashPath
+                && pHashEntry->cchPath   == cchPath
+                && kHlpMemComp(pHashEntry->pszPath, pchPath, cchPath) == 0)
+            {
+                PKFSOBJ pFsObj;
+                if (   pHashEntry->uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+                    || pHashEntry->uCacheGen == (  (pFsObj = pHashEntry->pFsObj) != NULL
+                                                 ? pFsObj->bObjType != KFSOBJ_TYPE_MISSING
+                                                   ? pCache->auGenerations[       pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                                                   : pCache->auGenerationsMissing[pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                                                 : pCache->auGenerationsMissing[pHashEntry->idxMissingGen])
+                    || (pHashEntry = kFsCacheRefreshPathA(pCache, pHashEntry, idxHashTab)) )
+                {
+                    pCache->cLookups++;
+                    pCache->cPathHashHits++;
+                    KFSCACHE_LOG2(("kFsCacheLookupA(%*.*s) - hit %p\n", cchPath, cchPath, pchPath, pHashEntry->pFsObj));
+                    *penmError = pHashEntry->enmError;
+                    if (pHashEntry->pFsObj)
+                        return kFsCacheObjRetainInternal(pHashEntry->pFsObj);
+                    return NULL;
+                }
+                break;
+            }
+            pHashEntry = pHashEntry->pNext;
+        } while (pHashEntry);
+    }
+
+    /*
+     * Create an entry for it by walking the file system cache and filling in the blanks.
+     */
+    if (   cchPath > 0
+        && cchPath < KFSCACHE_CFG_MAX_PATH)
+    {
+        PKFSOBJ pFsObj;
+        KBOOL   fAbsolute;
+        PKFSOBJ pLastAncestor = NULL;
+
+        /* Is absolute without any '..' bits? */
+        if (   cchPath >= 3
+            && (   (   pchPath[1] == ':'    /* Drive letter */
+                    && IS_SLASH(pchPath[2])
+                    && IS_ALPHA(pchPath[0]) )
+                || (   IS_SLASH(pchPath[0]) /* UNC */
+                    && IS_SLASH(pchPath[1]) ) )
+            && !kFsCacheHasDotDotA(pchPath, cchPath) )
+        {
+            pFsObj = kFsCacheLookupAbsoluteA(pCache, pchPath, cchPath, 0 /*fFlags*/, penmError, &pLastAncestor);
+            fAbsolute = K_TRUE;
+        }
+        else
+        {
+            pFsObj = kFsCacheLookupSlowA(pCache, pchPath, cchPath, 0 /*fFlags*/, penmError, &pLastAncestor);
+            fAbsolute = K_FALSE;
+        }
+        if (   pFsObj
+            || (   (pCache->fFlags & KFSCACHE_F_MISSING_PATHS)
+                && *penmError != KFSLOOKUPERROR_PATH_TOO_LONG)
+            || *penmError == KFSLOOKUPERROR_UNSUPPORTED )
+            kFsCacheCreatePathHashTabEntryA(pCache, pFsObj, pchPath, cchPath, uHashPath, idxHashTab, fAbsolute,
+                                            pLastAncestor ? pLastAncestor->fFlags & KFSOBJ_F_USE_CUSTOM_GEN : 0, *penmError);
+        if (pLastAncestor)
+            kFsCacheObjRelease(pCache, pLastAncestor);
+
+        pCache->cLookups++;
+        if (pFsObj)
+            pCache->cWalkHits++;
+        return pFsObj;
+    }
+
+    *penmError = cchPath > 0 ? KFSLOOKUPERROR_PATH_TOO_LONG : KFSLOOKUPERROR_PATH_TOO_SHORT;
+    return NULL;
+}
+
+
+/**
+ * Internal lookup worker that looks up a KFSOBJ for the given UTF-16 path with
+ * length and hash.
+ *
+ * This will first try the hash table.  If not in the hash table, the file
+ * system cache tree is walked, missing bits filled in and finally a hash table
+ * entry is created.
+ *
+ * Only drive letter paths are cachable.  We don't do any UNC paths at this
+ * point.
+ *
+ * @returns Reference to object corresponding to @a pwcPath on success, this
+ *          must be released by kFsCacheObjRelease.
+ *          NULL if not a path we care to cache.
+ * @param   pCache              The cache.
+ * @param   pwcPath             The path to lookup.
+ * @param   cwcPath             The length of the path (in wchar_t's).
+ * @param   uHashPath           The hash of the path.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ */
+static PKFSOBJ kFsCacheLookupHashedW(PKFSCACHE pCache, const wchar_t *pwcPath, KU32 cwcPath, KU32 uHashPath,
+                                     KFSLOOKUPERROR *penmError)
+{
+    /*
+     * Do hash table lookup of the path.
+     */
+    KU32        idxHashTab = uHashPath % K_ELEMENTS(pCache->apAnsiPaths);
+    PKFSHASHW   pHashEntry = pCache->apUtf16Paths[idxHashTab];
+    kHlpAssert(pCache->u32Magic == KFSCACHE_MAGIC);
+    if (pHashEntry)
+    {
+        do
+        {
+            if (   pHashEntry->uHashPath == uHashPath
+                && pHashEntry->cwcPath   == cwcPath
+                && kHlpMemComp(pHashEntry->pwszPath, pwcPath, cwcPath) == 0)
+            {
+                PKFSOBJ pFsObj;
+                if (   pHashEntry->uCacheGen == KFSOBJ_CACHE_GEN_IGNORE
+                    || pHashEntry->uCacheGen == ((pFsObj = pHashEntry->pFsObj) != NULL
+                                                 ? pFsObj->bObjType != KFSOBJ_TYPE_MISSING
+                                                   ? pCache->auGenerations[       pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                                                   : pCache->auGenerationsMissing[pFsObj->fFlags & KFSOBJ_F_USE_CUSTOM_GEN]
+                                                 : pCache->auGenerationsMissing[pHashEntry->idxMissingGen])
+                    || (pHashEntry = kFsCacheRefreshPathW(pCache, pHashEntry, idxHashTab)) )
+                {
+                    pCache->cLookups++;
+                    pCache->cPathHashHits++;
+                    KFSCACHE_LOG2(("kFsCacheLookupW(%*.*ls) - hit %p\n", cwcPath, cwcPath, pwcPath, pHashEntry->pFsObj));
+                    *penmError = pHashEntry->enmError;
+                    if (pHashEntry->pFsObj)
+                        return kFsCacheObjRetainInternal(pHashEntry->pFsObj);
+                    return NULL;
+                }
+                break;
+            }
+            pHashEntry = pHashEntry->pNext;
+        } while (pHashEntry);
+    }
+
+    /*
+     * Create an entry for it by walking the file system cache and filling in the blanks.
+     */
+    if (   cwcPath > 0
+        && cwcPath < KFSCACHE_CFG_MAX_PATH)
+    {
+        PKFSOBJ pFsObj;
+        KBOOL   fAbsolute;
+        PKFSOBJ pLastAncestor = NULL;
+
+        /* Is absolute without any '..' bits? */
+        if (   cwcPath >= 3
+            && (   (   pwcPath[1] == ':'    /* Drive letter */
+                    && IS_SLASH(pwcPath[2])
+                    && IS_ALPHA(pwcPath[0]) )
+                || (   IS_SLASH(pwcPath[0]) /* UNC */
+                    && IS_SLASH(pwcPath[1]) ) )
+            && !kFsCacheHasDotDotW(pwcPath, cwcPath) )
+        {
+            pFsObj = kFsCacheLookupAbsoluteW(pCache, pwcPath, cwcPath, 0 /*fFlags*/, penmError, &pLastAncestor);
+            fAbsolute = K_TRUE;
+        }
+        else
+        {
+            pFsObj = kFsCacheLookupSlowW(pCache, pwcPath, cwcPath, 0 /*fFlags*/, penmError, &pLastAncestor);
+            fAbsolute = K_FALSE;
+        }
+        if (   pFsObj
+            || (   (pCache->fFlags & KFSCACHE_F_MISSING_PATHS)
+                && *penmError != KFSLOOKUPERROR_PATH_TOO_LONG)
+            || *penmError == KFSLOOKUPERROR_UNSUPPORTED )
+            kFsCacheCreatePathHashTabEntryW(pCache, pFsObj, pwcPath, cwcPath, uHashPath, idxHashTab, fAbsolute,
+                                            pLastAncestor ? pLastAncestor->fFlags & KFSOBJ_F_USE_CUSTOM_GEN : 0, *penmError);
+        if (pLastAncestor)
+            kFsCacheObjRelease(pCache, pLastAncestor);
+
+        pCache->cLookups++;
+        if (pFsObj)
+            pCache->cWalkHits++;
+        return pFsObj;
+    }
+
+    *penmError = cwcPath > 0 ? KFSLOOKUPERROR_PATH_TOO_LONG : KFSLOOKUPERROR_PATH_TOO_SHORT;
+    return NULL;
+}
+
+
+
+/**
+ * Looks up a KFSOBJ for the given ANSI path.
+ *
+ * This will first try the hash table.  If not in the hash table, the file
+ * system cache tree is walked, missing bits filled in and finally a hash table
+ * entry is created.
+ *
+ * Only drive letter paths are cachable.  We don't do any UNC paths at this
+ * point.
+ *
+ * @returns Reference to object corresponding to @a pszPath on success, this
+ *          must be released by kFsCacheObjRelease.
+ *          NULL if not a path we care to cache.
+ * @param   pCache              The cache.
+ * @param   pszPath             The path to lookup.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ */
+PKFSOBJ kFsCacheLookupA(PKFSCACHE pCache, const char *pszPath, KFSLOOKUPERROR *penmError)
+{
+    KU32    uHashPath;
+    KU32    cchPath = (KU32)kFsCacheStrHashEx(pszPath, &uHashPath);
+    PKFSOBJ pObj;
+    KFSCACHE_LOCK(pCache);
+    pObj = kFsCacheLookupHashedA(pCache, pszPath, cchPath, uHashPath, penmError);
+    KFSCACHE_UNLOCK(pCache);
+    return pObj;
+}
+
+
+/**
+ * Looks up a KFSOBJ for the given UTF-16 path.
+ *
+ * This will first try the hash table.  If not in the hash table, the file
+ * system cache tree is walked, missing bits filled in and finally a hash table
+ * entry is created.
+ *
+ * Only drive letter paths are cachable.  We don't do any UNC paths at this
+ * point.
+ *
+ * @returns Reference to object corresponding to @a pwszPath on success, this
+ *          must be released by kFsCacheObjRelease.
+ *          NULL if not a path we care to cache.
+ * @param   pCache              The cache.
+ * @param   pwszPath            The path to lookup.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ */
+PKFSOBJ kFsCacheLookupW(PKFSCACHE pCache, const wchar_t *pwszPath, KFSLOOKUPERROR *penmError)
+{
+    KU32    uHashPath;
+    KU32    cwcPath = (KU32)kFsCacheUtf16HashEx(pwszPath, &uHashPath);
+    PKFSOBJ pObj;
+    KFSCACHE_LOCK(pCache);
+    pObj = kFsCacheLookupHashedW(pCache, pwszPath, cwcPath, uHashPath, penmError);
+    KFSCACHE_UNLOCK(pCache);
+    return pObj;
+}
+
+
+/**
+ * Looks up a KFSOBJ for the given ANSI path.
+ *
+ * This will first try the hash table.  If not in the hash table, the file
+ * system cache tree is walked, missing bits filled in and finally a hash table
+ * entry is created.
+ *
+ * Only drive letter paths are cachable.  We don't do any UNC paths at this
+ * point.
+ *
+ * @returns Reference to object corresponding to @a pchPath on success, this
+ *          must be released by kFsCacheObjRelease.
+ *          NULL if not a path we care to cache.
+ * @param   pCache              The cache.
+ * @param   pchPath             The path to lookup (does not need to be nul
+ *                              terminated).
+ * @param   cchPath             The path length.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ */
+PKFSOBJ kFsCacheLookupWithLengthA(PKFSCACHE pCache, const char *pchPath, KSIZE cchPath, KFSLOOKUPERROR *penmError)
+{
+    KU32    uHashPath = kFsCacheStrHashN(pchPath, cchPath);
+    PKFSOBJ pObj;
+    KFSCACHE_LOCK(pCache);
+    pObj = kFsCacheLookupHashedA(pCache, pchPath, (KU32)cchPath, uHashPath, penmError);
+    KFSCACHE_UNLOCK(pCache);
+    return pObj;
+}
+
+
+/**
+ * Looks up a KFSOBJ for the given UTF-16 path.
+ *
+ * This will first try the hash table.  If not in the hash table, the file
+ * system cache tree is walked, missing bits filled in and finally a hash table
+ * entry is created.
+ *
+ * Only drive letter paths are cachable.  We don't do any UNC paths at this
+ * point.
+ *
+ * @returns Reference to object corresponding to @a pwchPath on success, this
+ *          must be released by kFsCacheObjRelease.
+ *          NULL if not a path we care to cache.
+ * @param   pCache              The cache.
+ * @param   pwcPath             The path to lookup (does not need to be nul
+ *                              terminated).
+ * @param   cwcPath             The path length (in wchar_t's).
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ */
+PKFSOBJ kFsCacheLookupWithLengthW(PKFSCACHE pCache, const wchar_t *pwcPath, KSIZE cwcPath, KFSLOOKUPERROR *penmError)
+{
+    KU32    uHashPath = kFsCacheUtf16HashN(pwcPath, cwcPath);
+    PKFSOBJ pObj;
+    KFSCACHE_LOCK(pCache);
+    pObj = kFsCacheLookupHashedW(pCache, pwcPath, (KU32)cwcPath, uHashPath, penmError);
+    KFSCACHE_UNLOCK(pCache);
+    return pObj;
+}
+
+
+/**
+ * Wrapper around kFsCacheLookupA that drops KFSOBJ_TYPE_MISSING and returns
+ * KFSLOOKUPERROR_NOT_FOUND instead.
+ *
+ * @returns Reference to object corresponding to @a pszPath on success, this
+ *          must be released by kFsCacheObjRelease.
+ *          NULL if not a path we care to cache.
+ * @param   pCache              The cache.
+ * @param   pszPath             The path to lookup.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ */
+PKFSOBJ kFsCacheLookupNoMissingA(PKFSCACHE pCache, const char *pszPath, KFSLOOKUPERROR *penmError)
+{
+    PKFSOBJ pObj;
+    KFSCACHE_LOCK(pCache); /* probably not necessary */
+    pObj = kFsCacheLookupA(pCache, pszPath, penmError);
+    if (pObj)
+    {
+        if (pObj->bObjType != KFSOBJ_TYPE_MISSING)
+        {
+            KFSCACHE_UNLOCK(pCache);
+            return pObj;
+        }
+
+        kFsCacheObjRelease(pCache, pObj);
+        *penmError = KFSLOOKUPERROR_NOT_FOUND;
+    }
+    KFSCACHE_UNLOCK(pCache);
+    return NULL;
+}
+
+
+/**
+ * Wrapper around kFsCacheLookupW that drops KFSOBJ_TYPE_MISSING and returns
+ * KFSLOOKUPERROR_NOT_FOUND instead.
+ *
+ * @returns Reference to object corresponding to @a pszPath on success, this
+ *          must be released by kFsCacheObjRelease.
+ *          NULL if not a path we care to cache.
+ * @param   pCache              The cache.
+ * @param   pwszPath            The path to lookup.
+ * @param   penmError           Where to return details as to why the lookup
+ *                              failed.
+ */
+PKFSOBJ kFsCacheLookupNoMissingW(PKFSCACHE pCache, const wchar_t *pwszPath, KFSLOOKUPERROR *penmError)
+{
+    PKFSOBJ pObj;
+    KFSCACHE_LOCK(pCache); /* probably not necessary */
+    pObj = kFsCacheLookupW(pCache, pwszPath, penmError);
+    if (pObj)
+    {
+        if (pObj->bObjType != KFSOBJ_TYPE_MISSING)
+        {
+            KFSCACHE_UNLOCK(pCache);
+            return pObj;
+        }
+
+        kFsCacheObjRelease(pCache, pObj);
+        *penmError = KFSLOOKUPERROR_NOT_FOUND;
+    }
+    KFSCACHE_UNLOCK(pCache);
+    return NULL;
+}
+
+
+/**
+ * Destroys a cache object which has a zero reference count.
+ *
+ * @returns 0
+ * @param   pCache              The cache.
+ * @param   pObj                The object.
+ * @param   pszWhere            Where it was released from.
+ */
+KU32 kFsCacheObjDestroy(PKFSCACHE pCache, PKFSOBJ pObj, const char *pszWhere)
+{
+    kHlpAssert(pObj->cRefs == 0);
+    kHlpAssert(pObj->pParent == NULL);
+    kHlpAssert(pObj->u32Magic == KFSOBJ_MAGIC);
+    KFSCACHE_LOCK(pCache);
+
+    KFSCACHE_LOG(("Destroying %s/%s, type=%d, pObj=%p, pszWhere=%s\n",
+                  pObj->pParent ? pObj->pParent->Obj.pszName : "", pObj->pszName, pObj->bObjType, pObj, pszWhere));
+    if (pObj->cPathHashRefs != 0)
+    {
+        fprintf(stderr, "Destroying %s/%s, type=%d, path hash entries: %d!\n", pObj->pParent ? pObj->pParent->Obj.pszName : "",
+                pObj->pszName, pObj->bObjType, pObj->cPathHashRefs);
+        fflush(stderr);
+        __debugbreak();
+    }
+
+    /*
+     * Invalidate the structure.
+     */
+    pObj->u32Magic = ~KFSOBJ_MAGIC;
+
+    /*
+     * Destroy any user data first.
+     */
+    while (pObj->pUserDataHead != NULL)
+    {
+        PKFSUSERDATA pUserData = pObj->pUserDataHead;
+        pObj->pUserDataHead = pUserData->pNext;
+        if (pUserData->pfnDestructor)
+            pUserData->pfnDestructor(pCache, pObj, pUserData);
+        kHlpFree(pUserData);
+    }
+
+    /*
+     * Do type specific destruction
+     */
+    switch (pObj->bObjType)
+    {
+        case KFSOBJ_TYPE_MISSING:
+            /* nothing else to do here */
+            pCache->cbObjects -= sizeof(KFSDIR);
+            break;
+
+        case KFSOBJ_TYPE_DIR:
+        {
+            PKFSDIR pDir = (PKFSDIR)pObj;
+            KU32    cChildren = pDir->cChildren;
+            pCache->cbObjects -= sizeof(*pDir)
+                               + K_ALIGN_Z(cChildren, 16) * sizeof(pDir->papChildren)
+                               + (pDir->fHashTabMask + !!pDir->fHashTabMask) * sizeof(pDir->papHashTab[0]);
+
+            pDir->cChildren   = 0;
+            while (cChildren-- > 0)
+                kFsCacheObjRelease(pCache, pDir->papChildren[cChildren]);
+            kHlpFree(pDir->papChildren);
+            pDir->papChildren = NULL;
+
+            kHlpFree(pDir->papHashTab);
+            pDir->papHashTab = NULL;
+            break;
+        }
+
+        case KFSOBJ_TYPE_FILE:
+        case KFSOBJ_TYPE_OTHER:
+            pCache->cbObjects -= sizeof(*pObj);
+            break;
+
+        default:
+            KFSCACHE_UNLOCK(pCache);
+            return 0;
+    }
+
+    /*
+     * Common bits.
+     */
+    pCache->cbObjects -= pObj->cchName + 1;
+#ifdef KFSCACHE_CFG_UTF16
+    pCache->cbObjects -= (pObj->cwcName + 1) * sizeof(wchar_t);
+#endif
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+    if (pObj->pszName != pObj->pszShortName)
+    {
+        pCache->cbObjects -= pObj->cchShortName + 1;
+# ifdef KFSCACHE_CFG_UTF16
+        pCache->cbObjects -= (pObj->cwcShortName + 1) * sizeof(wchar_t);
+# endif
+    }
+#endif
+    pCache->cObjects--;
+
+    if (pObj->pNameAlloc)
+    {
+        pCache->cbObjects -= pObj->pNameAlloc->cb;
+        kHlpFree(pObj->pNameAlloc);
+    }
+
+    KFSCACHE_UNLOCK(pCache);
+
+    kHlpFree(pObj);
+    return 0;
+}
+
+
+/**
+ * Releases a reference to a cache object.
+ *
+ * @returns New reference count.
+ * @param   pCache              The cache.
+ * @param   pObj                The object.
+ */
+#undef kFsCacheObjRelease
+KU32 kFsCacheObjRelease(PKFSCACHE pCache, PKFSOBJ pObj)
+{
+    if (pObj)
+    {
+        KU32 cRefs;
+        kHlpAssert(pCache->u32Magic == KFSCACHE_MAGIC);
+        kHlpAssert(pObj->u32Magic == KFSOBJ_MAGIC);
+
+        cRefs = _InterlockedDecrement(&pObj->cRefs);
+        if (cRefs)
+            return cRefs;
+        return kFsCacheObjDestroy(pCache, pObj, "kFsCacheObjRelease");
+    }
+    return 0;
+}
+
+
+/**
+ * Debug version of kFsCacheObjRelease
+ *
+ * @returns New reference count.
+ * @param   pCache              The cache.
+ * @param   pObj                The object.
+ * @param   pszWhere            Where it's invoked from.
+ */
+KU32 kFsCacheObjReleaseTagged(PKFSCACHE pCache, PKFSOBJ pObj, const char *pszWhere)
+{
+    if (pObj)
+    {
+        KU32 cRefs;
+        kHlpAssert(pCache->u32Magic == KFSCACHE_MAGIC);
+        kHlpAssert(pObj->u32Magic == KFSOBJ_MAGIC);
+
+        cRefs = _InterlockedDecrement(&pObj->cRefs);
+        if (cRefs)
+            return cRefs;
+        return kFsCacheObjDestroy(pCache, pObj, pszWhere);
+    }
+    return 0;
+}
+
+
+/**
+ * Retains a reference to a cahce object.
+ *
+ * @returns New reference count.
+ * @param   pObj                The object.
+ */
+KU32 kFsCacheObjRetain(PKFSOBJ pObj)
+{
+    KU32 cRefs;
+    kHlpAssert(pCache->u32Magic == KFSCACHE_MAGIC);
+    kHlpAssert(pObj->u32Magic == KFSOBJ_MAGIC);
+
+    cRefs = _InterlockedIncrement(&pObj->cRefs);
+    kHlpAssert(cRefs < 16384);
+    return cRefs;
+}
+
+
+/**
+ * Associates an item of user data with the given object.
+ *
+ * If the data needs cleaning up before being free, set the
+ * PKFSUSERDATA::pfnDestructor member of the returned structure.
+ *
+ * @returns Pointer to the user data on success.
+ *          NULL if out of memory or key already in use.
+ *
+ * @param   pCache              The cache.
+ * @param   pObj                The object.
+ * @param   uKey                The user data key.
+ * @param   cbUserData          The size of the user data.
+ */
+PKFSUSERDATA kFsCacheObjAddUserData(PKFSCACHE pCache, PKFSOBJ pObj, KUPTR uKey, KSIZE cbUserData)
+{
+    kHlpAssert(cbUserData >= sizeof(*pNew));
+    KFSCACHE_OBJUSERDATA_LOCK(pCache, pObj);
+
+    if (kFsCacheObjGetUserData(pCache, pObj, uKey) == NULL)
+    {
+        PKFSUSERDATA pNew = (PKFSUSERDATA)kHlpAllocZ(cbUserData);
+        if (pNew)
+        {
+            pNew->uKey          = uKey;
+            pNew->pfnDestructor = NULL;
+            pNew->pNext         = pObj->pUserDataHead;
+            pObj->pUserDataHead = pNew;
+            KFSCACHE_OBJUSERDATA_UNLOCK(pCache, pObj);
+            return pNew;
+        }
+    }
+
+    KFSCACHE_OBJUSERDATA_UNLOCK(pCache, pObj);
+    return NULL;
+}
+
+
+/**
+ * Retrieves an item of user data associated with the given object.
+ *
+ * @returns Pointer to the associated user data if found, otherwise NULL.
+ * @param   pCache              The cache.
+ * @param   pObj                The object.
+ * @param   uKey                The user data key.
+ */
+PKFSUSERDATA kFsCacheObjGetUserData(PKFSCACHE pCache, PKFSOBJ pObj, KUPTR uKey)
+{
+    PKFSUSERDATA pCur;
+
+    kHlpAssert(pCache->u32Magic == KFSCACHE_MAGIC);
+    kHlpAssert(pObj->u32Magic == KFSOBJ_MAGIC);
+    KFSCACHE_OBJUSERDATA_LOCK(pCache, pObj);
+
+    for (pCur = pObj->pUserDataHead; pCur; pCur = pCur->pNext)
+        if (pCur->uKey == uKey)
+        {
+            KFSCACHE_OBJUSERDATA_UNLOCK(pCache, pObj);
+            return pCur;
+        }
+
+    KFSCACHE_OBJUSERDATA_UNLOCK(pCache, pObj);
+    return NULL;
+}
+
+
+/**
+ * Determins the idxUserDataLock value.
+ *
+ * Called by KFSCACHE_OBJUSERDATA_LOCK when idxUserDataLock is set to KU8_MAX.
+ *
+ * @returns The proper idxUserDataLock value.
+ * @param   pCache              The cache.
+ * @param   pObj                The object.
+ */
+KU8 kFsCacheObjGetUserDataLockIndex(PKFSCACHE pCache, PKFSOBJ pObj)
+{
+    KU8 idxUserDataLock = pObj->idxUserDataLock;
+    if (idxUserDataLock == KU8_MAX)
+    {
+        KFSCACHE_LOCK(pCache);
+        idxUserDataLock = pObj->idxUserDataLock;
+        if (idxUserDataLock == KU8_MAX)
+        {
+            idxUserDataLock = pCache->idxUserDataNext++;
+            idxUserDataLock %= K_ELEMENTS(pCache->auUserDataLocks);
+            pObj->idxUserDataLock = idxUserDataLock;
+        }
+        KFSCACHE_UNLOCK(pCache);
+    }
+    return idxUserDataLock;
+}
+
+/**
+ * Gets the full path to @a pObj, ANSI version.
+ *
+ * @returns K_TRUE on success, K_FALSE on buffer overflow (nothing stored).
+ * @param   pObj                The object to get the full path to.
+ * @param   pszPath             Where to return the path
+ * @param   cbPath              The size of the output buffer.
+ * @param   chSlash             The slash to use.
+ */
+KBOOL kFsCacheObjGetFullPathA(PKFSOBJ pObj, char *pszPath, KSIZE cbPath, char chSlash)
+{
+    /** @todo No way of to do locking here w/o pCache parameter; need to verify
+     *        that we're only access static data! */
+    KSIZE off = pObj->cchParent;
+    kHlpAssert(pObj->u32Magic == KFSOBJ_MAGIC);
+    if (off > 0)
+    {
+        KSIZE offEnd = off + pObj->cchName;
+        if (offEnd < cbPath)
+        {
+            PKFSDIR pAncestor;
+
+            pszPath[off + pObj->cchName] = '\0';
+            memcpy(&pszPath[off], pObj->pszName, pObj->cchName);
+
+            for (pAncestor = pObj->pParent; off > 0; pAncestor = pAncestor->Obj.pParent)
+            {
+                kHlpAssert(off > 1);
+                kHlpAssert(pAncestor != NULL);
+                kHlpAssert(pAncestor->Obj.cchName > 0);
+                pszPath[--off] = chSlash;
+                off -= pAncestor->Obj.cchName;
+                kHlpAssert(pAncestor->Obj.cchParent == off);
+                memcpy(&pszPath[off], pAncestor->Obj.pszName, pAncestor->Obj.cchName);
+            }
+            return K_TRUE;
+        }
+    }
+    else
+    {
+        KBOOL const fDriveLetter = pObj->cchName == 2 && pObj->pszName[2] == ':';
+        off = pObj->cchName;
+        if (off + fDriveLetter < cbPath)
+        {
+            memcpy(pszPath, pObj->pszName, off);
+            if (fDriveLetter)
+                pszPath[off++] = chSlash;
+            pszPath[off] = '\0';
+            return K_TRUE;
+        }
+    }
+
+    return K_FALSE;
+}
+
+
+/**
+ * Gets the full path to @a pObj, UTF-16 version.
+ *
+ * @returns K_TRUE on success, K_FALSE on buffer overflow (nothing stored).
+ * @param   pObj                The object to get the full path to.
+ * @param   pszPath             Where to return the path
+ * @param   cbPath              The size of the output buffer.
+ * @param   wcSlash             The slash to use.
+ */
+KBOOL kFsCacheObjGetFullPathW(PKFSOBJ pObj, wchar_t *pwszPath, KSIZE cwcPath, wchar_t wcSlash)
+{
+    /** @todo No way of to do locking here w/o pCache parameter; need to verify
+     *        that we're only access static data! */
+    KSIZE off = pObj->cwcParent;
+    kHlpAssert(pObj->u32Magic == KFSOBJ_MAGIC);
+    if (off > 0)
+    {
+        KSIZE offEnd = off + pObj->cwcName;
+        if (offEnd < cwcPath)
+        {
+            PKFSDIR pAncestor;
+
+            pwszPath[off + pObj->cwcName] = '\0';
+            memcpy(&pwszPath[off], pObj->pwszName, pObj->cwcName * sizeof(wchar_t));
+
+            for (pAncestor = pObj->pParent; off > 0; pAncestor = pAncestor->Obj.pParent)
+            {
+                kHlpAssert(off > 1);
+                kHlpAssert(pAncestor != NULL);
+                kHlpAssert(pAncestor->Obj.cwcName > 0);
+                pwszPath[--off] = wcSlash;
+                off -= pAncestor->Obj.cwcName;
+                kHlpAssert(pAncestor->Obj.cwcParent == off);
+                memcpy(&pwszPath[off], pAncestor->Obj.pwszName, pAncestor->Obj.cwcName * sizeof(wchar_t));
+            }
+            return K_TRUE;
+        }
+    }
+    else
+    {
+        KBOOL const fDriveLetter = pObj->cchName == 2 && pObj->pszName[2] == ':';
+        off = pObj->cwcName;
+        if (off + fDriveLetter < cwcPath)
+        {
+            memcpy(pwszPath, pObj->pwszName, off * sizeof(wchar_t));
+            if (fDriveLetter)
+                pwszPath[off++] = wcSlash;
+            pwszPath[off] = '\0';
+            return K_TRUE;
+        }
+    }
+
+    return K_FALSE;
+}
+
+
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+
+/**
+ * Gets the full short path to @a pObj, ANSI version.
+ *
+ * @returns K_TRUE on success, K_FALSE on buffer overflow (nothing stored).
+ * @param   pObj                The object to get the full path to.
+ * @param   pszPath             Where to return the path
+ * @param   cbPath              The size of the output buffer.
+ * @param   chSlash             The slash to use.
+ */
+KBOOL kFsCacheObjGetFullShortPathA(PKFSOBJ pObj, char *pszPath, KSIZE cbPath, char chSlash)
+{
+    /** @todo No way of to do locking here w/o pCache parameter; need to verify
+     *        that we're only access static data! */
+    KSIZE off = pObj->cchShortParent;
+    kHlpAssert(pObj->u32Magic == KFSOBJ_MAGIC);
+    if (off > 0)
+    {
+        KSIZE offEnd = off + pObj->cchShortName;
+        if (offEnd < cbPath)
+        {
+            PKFSDIR pAncestor;
+
+            pszPath[off + pObj->cchShortName] = '\0';
+            memcpy(&pszPath[off], pObj->pszShortName, pObj->cchShortName);
+
+            for (pAncestor = pObj->pParent; off > 0; pAncestor = pAncestor->Obj.pParent)
+            {
+                kHlpAssert(off > 1);
+                kHlpAssert(pAncestor != NULL);
+                kHlpAssert(pAncestor->Obj.cchShortName > 0);
+                pszPath[--off] = chSlash;
+                off -= pAncestor->Obj.cchShortName;
+                kHlpAssert(pAncestor->Obj.cchShortParent == off);
+                memcpy(&pszPath[off], pAncestor->Obj.pszShortName, pAncestor->Obj.cchShortName);
+            }
+            return K_TRUE;
+        }
+    }
+    else
+    {
+        KBOOL const fDriveLetter = pObj->cchShortName == 2 && pObj->pszShortName[2] == ':';
+        off = pObj->cchShortName;
+        if (off + fDriveLetter < cbPath)
+        {
+            memcpy(pszPath, pObj->pszShortName, off);
+            if (fDriveLetter)
+                pszPath[off++] = chSlash;
+            pszPath[off] = '\0';
+            return K_TRUE;
+        }
+    }
+
+    return K_FALSE;
+}
+
+
+/**
+ * Gets the full short path to @a pObj, UTF-16 version.
+ *
+ * @returns K_TRUE on success, K_FALSE on buffer overflow (nothing stored).
+ * @param   pObj                The object to get the full path to.
+ * @param   pszPath             Where to return the path
+ * @param   cbPath              The size of the output buffer.
+ * @param   wcSlash             The slash to use.
+ */
+KBOOL kFsCacheObjGetFullShortPathW(PKFSOBJ pObj, wchar_t *pwszPath, KSIZE cwcPath, wchar_t wcSlash)
+{
+    /** @todo No way of to do locking here w/o pCache parameter; need to verify
+     *        that we're only access static data! */
+    KSIZE off = pObj->cwcShortParent;
+    kHlpAssert(pObj->u32Magic == KFSOBJ_MAGIC);
+    if (off > 0)
+    {
+        KSIZE offEnd = off + pObj->cwcShortName;
+        if (offEnd < cwcPath)
+        {
+            PKFSDIR pAncestor;
+
+            pwszPath[off + pObj->cwcShortName] = '\0';
+            memcpy(&pwszPath[off], pObj->pwszShortName, pObj->cwcShortName * sizeof(wchar_t));
+
+            for (pAncestor = pObj->pParent; off > 0; pAncestor = pAncestor->Obj.pParent)
+            {
+                kHlpAssert(off > 1);
+                kHlpAssert(pAncestor != NULL);
+                kHlpAssert(pAncestor->Obj.cwcShortName > 0);
+                pwszPath[--off] = wcSlash;
+                off -= pAncestor->Obj.cwcShortName;
+                kHlpAssert(pAncestor->Obj.cwcShortParent == off);
+                memcpy(&pwszPath[off], pAncestor->Obj.pwszShortName, pAncestor->Obj.cwcShortName * sizeof(wchar_t));
+            }
+            return K_TRUE;
+        }
+    }
+    else
+    {
+        KBOOL const fDriveLetter = pObj->cchShortName == 2 && pObj->pszShortName[2] == ':';
+        off = pObj->cwcShortName;
+        if (off + fDriveLetter < cwcPath)
+        {
+            memcpy(pwszPath, pObj->pwszShortName, off * sizeof(wchar_t));
+            if (fDriveLetter)
+                pwszPath[off++] = wcSlash;
+            pwszPath[off] = '\0';
+            return K_TRUE;
+        }
+    }
+
+    return K_FALSE;
+}
+
+#endif /* KFSCACHE_CFG_SHORT_NAMES */
+
+
+
+/**
+ * Read the specified bits from the files into the given buffer, simple version.
+ *
+ * @returns K_TRUE on success (all requested bytes read),
+ *          K_FALSE on any kind of failure.
+ *
+ * @param   pCache              The cache.
+ * @param   pFileObj            The file object.
+ * @param   offStart            Where to start reading.
+ * @param   pvBuf               Where to store what we read.
+ * @param   cbToRead            How much to read (exact).
+ */
+KBOOL kFsCacheFileSimpleOpenReadClose(PKFSCACHE pCache, PKFSOBJ pFileObj, KU64 offStart, void *pvBuf, KSIZE cbToRead)
+{
+    /*
+     * Open the file relative to the parent directory.
+     */
+    MY_NTSTATUS             rcNt;
+    HANDLE                  hFile;
+    MY_IO_STATUS_BLOCK      Ios;
+    MY_OBJECT_ATTRIBUTES    ObjAttr;
+    MY_UNICODE_STRING       UniStr;
+
+    kHlpAssertReturn(pFileObj->bObjType == KFSOBJ_TYPE_FILE, K_FALSE);
+    kHlpAssert(pFileObj->pParent);
+    kHlpAssertReturn(pFileObj->pParent->hDir != INVALID_HANDLE_VALUE, K_FALSE);
+    kHlpAssertReturn(offStart == 0, K_FALSE); /** @todo when needed */
+
+    Ios.Information = -1;
+    Ios.u.Status    = -1;
+
+    UniStr.Buffer        = (wchar_t *)pFileObj->pwszName;
+    UniStr.Length        = (USHORT)(pFileObj->cwcName * sizeof(wchar_t));
+    UniStr.MaximumLength = UniStr.Length + sizeof(wchar_t);
+
+/** @todo potential race against kFsCacheInvalidateDeletedDirectoryA   */
+    MyInitializeObjectAttributes(&ObjAttr, &UniStr, OBJ_CASE_INSENSITIVE, pFileObj->pParent->hDir, NULL /*pSecAttr*/);
+
+    rcNt = g_pfnNtCreateFile(&hFile,
+                             GENERIC_READ | SYNCHRONIZE,
+                             &ObjAttr,
+                             &Ios,
+                             NULL, /*cbFileInitialAlloc */
+                             FILE_ATTRIBUTE_NORMAL,
+                             FILE_SHARE_READ,
+                             FILE_OPEN,
+                             FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT,
+                             NULL, /*pEaBuffer*/
+                             0);   /*cbEaBuffer*/
+    if (MY_NT_SUCCESS(rcNt))
+    {
+        LARGE_INTEGER offFile;
+        offFile.QuadPart = offStart;
+
+        Ios.Information = -1;
+        Ios.u.Status    = -1;
+        rcNt = g_pfnNtReadFile(hFile, NULL /*hEvent*/, NULL /*pfnApcComplete*/, NULL /*pvApcCtx*/, &Ios,
+                               pvBuf, (KU32)cbToRead, !offStart ? &offFile : NULL, NULL /*puKey*/);
+        if (MY_NT_SUCCESS(rcNt))
+            rcNt = Ios.u.Status;
+        if (MY_NT_SUCCESS(rcNt))
+        {
+            if (Ios.Information == cbToRead)
+            {
+                g_pfnNtClose(hFile);
+                return K_TRUE;
+            }
+            KFSCACHE_LOG(("Error reading %#x bytes from '%ls': Information=%p\n", pFileObj->pwszName, Ios.Information));
+        }
+        else
+            KFSCACHE_LOG(("Error reading %#x bytes from '%ls': %#x\n", pFileObj->pwszName, rcNt));
+        g_pfnNtClose(hFile);
+    }
+    else
+        KFSCACHE_LOG(("Error opening '%ls' for caching: %#x\n", pFileObj->pwszName, rcNt));
+    return K_FALSE;
+}
+
+
+/**
+ * Invalidate all cache entries of missing files.
+ *
+ * @param   pCache      The cache.
+ */
+void kFsCacheInvalidateMissing(PKFSCACHE pCache)
+{
+    kHlpAssert(pCache->u32Magic == KFSOBJ_MAGIC);
+    KFSCACHE_LOCK(pCache);
+
+    pCache->auGenerationsMissing[0]++;
+    kHlpAssert(pCache->uGenerationMissing < KU32_MAX);
+
+    KFSCACHE_LOG(("Invalidate missing %#x\n", pCache->auGenerationsMissing[0]));
+    KFSCACHE_UNLOCK(pCache);
+}
+
+
+/** 
+ * Recursively close directories. 
+ */ 
+static void kFsCacheCloseDirs(PKFSOBJ *papChildren, KU32 cChildren)
+{
+    while (cChildren-- > 0)
+    {
+        PKFSDIR pDir = (PKFSDIR)papChildren[cChildren];
+        if (pDir && pDir->Obj.bObjType == KFSOBJ_TYPE_DIR)
+        {
+            if (pDir->hDir != INVALID_HANDLE_VALUE)
+            {
+                g_pfnNtClose(pDir->hDir);
+                pDir->hDir = INVALID_HANDLE_VALUE;
+            }
+            kFsCacheCloseDirs(pDir->papChildren, pDir->cChildren);
+        }
+    }
+}
+
+
+/**
+ * Worker for kFsCacheInvalidateAll and kFsCacheInvalidateAllAndCloseDirs
+ */
+static void kFsCacheInvalidateAllWorker(PKFSCACHE pCache, KBOOL fCloseDirs, KBOOL fIncludingRoot)
+{
+    kHlpAssert(pCache->u32Magic == KFSOBJ_MAGIC);
+    KFSCACHE_LOCK(pCache);
+
+    pCache->auGenerationsMissing[0]++;
+    kHlpAssert(pCache->auGenerationsMissing[0] < KU32_MAX);
+    pCache->auGenerationsMissing[1]++;
+    kHlpAssert(pCache->auGenerationsMissing[1] < KU32_MAX);
+
+    pCache->auGenerations[0]++;
+    kHlpAssert(pCache->auGenerations[0] < KU32_MAX);
+    pCache->auGenerations[1]++;
+    kHlpAssert(pCache->auGenerations[1] < KU32_MAX);
+
+    if (fCloseDirs)
+    {
+        kFsCacheCloseDirs(pCache->RootDir.papChildren, pCache->RootDir.cChildren);
+        if (fCloseDirs && pCache->RootDir.hDir != INVALID_HANDLE_VALUE)
+        {
+            g_pfnNtClose(pCache->RootDir.hDir);
+            pCache->RootDir.hDir = INVALID_HANDLE_VALUE;
+        }
+    }
+
+    KFSCACHE_LOG(("Invalidate all - default: %#x/%#x,  custom: %#x/%#x\n",
+                  pCache->auGenerationsMissing[0], pCache->auGenerations[0],
+                  pCache->auGenerationsMissing[1], pCache->auGenerations[1]));
+    KFSCACHE_UNLOCK(pCache);
+}
+
+
+/**
+ * Invalidate all cache entries (regular, custom & missing).
+ *
+ * @param   pCache      The cache.
+ */
+void kFsCacheInvalidateAll(PKFSCACHE pCache)
+{
+    kHlpAssert(pCache->u32Magic == KFSOBJ_MAGIC);
+    kFsCacheInvalidateAllWorker(pCache, K_FALSE, K_FALSE);
+}
+
+
+/**
+ * Invalidate all cache entries (regular, custom & missing) and close all the
+ * directory handles.
+ *
+ * @param   pCache          The cache.
+ * @param   fIncludingRoot  Close the root directory handle too.
+ */
+void kFsCacheInvalidateAllAndCloseDirs(PKFSCACHE pCache, KBOOL fIncludingRoot)
+{
+    kHlpAssert(pCache->u32Magic == KFSOBJ_MAGIC);
+    kFsCacheInvalidateAllWorker(pCache, K_TRUE, fIncludingRoot);
+}
+
+
+/**
+ * Invalidate all cache entries with custom generation handling set.
+ *
+ * @see     kFsCacheSetupCustomRevisionForTree, KFSOBJ_F_USE_CUSTOM_GEN
+ * @param   pCache      The cache.
+ */
+void kFsCacheInvalidateCustomMissing(PKFSCACHE pCache)
+{
+    kHlpAssert(pCache->u32Magic == KFSOBJ_MAGIC);
+    KFSCACHE_LOCK(pCache);
+
+    pCache->auGenerationsMissing[1]++;
+    kHlpAssert(pCache->auGenerationsMissing[1] < KU32_MAX);
+
+    KFSCACHE_LOG(("Invalidate missing custom %#x\n", pCache->auGenerationsMissing[1]));
+    KFSCACHE_UNLOCK(pCache);
+}
+
+
+/**
+ * Invalidate all cache entries with custom generation handling set, both
+ * missing and regular present entries.
+ *
+ * @see     kFsCacheSetupCustomRevisionForTree, KFSOBJ_F_USE_CUSTOM_GEN
+ * @param   pCache      The cache.
+ */
+void kFsCacheInvalidateCustomBoth(PKFSCACHE pCache)
+{
+    kHlpAssert(pCache->u32Magic == KFSOBJ_MAGIC);
+    KFSCACHE_LOCK(pCache);
+
+    pCache->auGenerations[1]++;
+    kHlpAssert(pCache->auGenerations[1] < KU32_MAX);
+    pCache->auGenerationsMissing[1]++;
+    kHlpAssert(pCache->auGenerationsMissing[1] < KU32_MAX);
+
+    KFSCACHE_LOG(("Invalidate both custom %#x/%#x\n", pCache->auGenerationsMissing[1], pCache->auGenerations[1]));
+    KFSCACHE_UNLOCK(pCache);
+}
+
+
+
+/**
+ * Applies the given flags to all the objects in a tree.
+ *
+ * @param   pRoot               Where to start applying the flag changes.
+ * @param   fAndMask            The AND mask.
+ * @param   fOrMask             The OR mask.
+ */
+static void kFsCacheApplyFlagsToTree(PKFSDIR pRoot, KU32 fAndMask, KU32 fOrMask)
+{
+    PKFSOBJ    *ppCur = ((PKFSDIR)pRoot)->papChildren;
+    KU32        cLeft = ((PKFSDIR)pRoot)->cChildren;
+    while (cLeft-- > 0)
+    {
+        PKFSOBJ pCur = *ppCur++;
+        if (pCur->bObjType != KFSOBJ_TYPE_DIR)
+            pCur->fFlags = (fAndMask & pCur->fFlags) | fOrMask;
+        else
+            kFsCacheApplyFlagsToTree((PKFSDIR)pCur, fAndMask, fOrMask);
+    }
+
+    pRoot->Obj.fFlags = (fAndMask & pRoot->Obj.fFlags) | fOrMask;
+}
+
+
+/**
+ * Sets up using custom revisioning for the specified directory tree or file.
+ *
+ * There are some restrictions of the current implementation:
+ *      - If the root of the sub-tree is ever deleted from the cache (i.e.
+ *        deleted in real life and reflected in the cache), the setting is lost.
+ *      - It is not automatically applied to the lookup paths caches.
+ *
+ * @returns K_TRUE on success, K_FALSE on failure.
+ * @param   pCache              The cache.
+ * @param   pRoot               The root of the subtree.  A non-directory is
+ *                              fine, like a missing node.
+ */
+KBOOL kFsCacheSetupCustomRevisionForTree(PKFSCACHE pCache, PKFSOBJ pRoot)
+{
+    if (pRoot)
+    {
+        KFSCACHE_LOCK(pCache);
+        if (pRoot->bObjType == KFSOBJ_TYPE_DIR)
+            kFsCacheApplyFlagsToTree((PKFSDIR)pRoot, KU32_MAX, KFSOBJ_F_USE_CUSTOM_GEN);
+        else
+            pRoot->fFlags |= KFSOBJ_F_USE_CUSTOM_GEN;
+        KFSCACHE_UNLOCK(pCache);
+        return K_TRUE;
+    }
+    return K_FALSE;
+}
+
+
+/**
+ * Invalidates a deleted directory, ANSI version.
+ *
+ * @returns K_TRUE if found and is a non-root directory. Otherwise K_FALSE.
+ * @param   pCache              The cache.
+ * @param   pszDir              The directory.
+ */
+KBOOL kFsCacheInvalidateDeletedDirectoryA(PKFSCACHE pCache, const char *pszDir)
+{
+    KU32            cchDir = (KU32)kHlpStrLen(pszDir);
+    KFSLOOKUPERROR  enmError;
+    PKFSOBJ         pFsObj;
+
+    KFSCACHE_LOCK(pCache);
+
+    /* Is absolute without any '..' bits? */
+    if (   cchDir >= 3
+        && (   (   pszDir[1] == ':'    /* Drive letter */
+                && IS_SLASH(pszDir[2])
+                && IS_ALPHA(pszDir[0]) )
+            || (   IS_SLASH(pszDir[0]) /* UNC */
+                && IS_SLASH(pszDir[1]) ) )
+        && !kFsCacheHasDotDotA(pszDir, cchDir) )
+        pFsObj = kFsCacheLookupAbsoluteA(pCache, pszDir, cchDir, KFSCACHE_LOOKUP_F_NO_INSERT | KFSCACHE_LOOKUP_F_NO_REFRESH,
+                                         &enmError, NULL);
+    else
+        pFsObj = kFsCacheLookupSlowA(pCache, pszDir, cchDir, KFSCACHE_LOOKUP_F_NO_INSERT | KFSCACHE_LOOKUP_F_NO_REFRESH,
+                                     &enmError, NULL);
+    if (pFsObj)
+    {
+        /* Is directory? */
+        if (pFsObj->bObjType == KFSOBJ_TYPE_DIR)
+        {
+            if (pFsObj->pParent != &pCache->RootDir)
+            {
+                PKFSDIR pDir = (PKFSDIR)pFsObj;
+                KFSCACHE_LOG(("kFsCacheInvalidateDeletedDirectoryA: %s hDir=%p\n", pszDir, pDir->hDir));
+                if (pDir->hDir != INVALID_HANDLE_VALUE)
+                {
+                    g_pfnNtClose(pDir->hDir);
+                    pDir->hDir = INVALID_HANDLE_VALUE;
+                }
+                pDir->fNeedRePopulating = K_TRUE;
+                pDir->Obj.uCacheGen = pCache->auGenerations[pDir->Obj.fFlags & KFSOBJ_F_USE_CUSTOM_GEN] - 1;
+                kFsCacheObjRelease(pCache, &pDir->Obj);
+                KFSCACHE_UNLOCK(pCache);
+                return K_TRUE;
+            }
+            KFSCACHE_LOG(("kFsCacheInvalidateDeletedDirectoryA: Trying to invalidate a root directory was deleted! %s\n", pszDir));
+        }
+        else
+            KFSCACHE_LOG(("kFsCacheInvalidateDeletedDirectoryA: Trying to invalidate a non-directory: bObjType=%d %s\n",
+                          pFsObj->bObjType, pszDir));
+        kFsCacheObjRelease(pCache, pFsObj);
+    }
+    else
+        KFSCACHE_LOG(("kFsCacheInvalidateDeletedDirectoryA: '%s' was not found\n", pszDir));
+    KFSCACHE_UNLOCK(pCache);
+    return K_FALSE;
+}
+
+
+PKFSCACHE kFsCacheCreate(KU32 fFlags)
+{
+    PKFSCACHE pCache;
+    birdResolveImports();
+
+    pCache = (PKFSCACHE)kHlpAllocZ(sizeof(*pCache));
+    if (pCache)
+    {
+        /* Dummy root dir entry. */
+        pCache->RootDir.Obj.u32Magic        = KFSOBJ_MAGIC;
+        pCache->RootDir.Obj.cRefs           = 1;
+        pCache->RootDir.Obj.uCacheGen       = KFSOBJ_CACHE_GEN_IGNORE;
+        pCache->RootDir.Obj.bObjType        = KFSOBJ_TYPE_DIR;
+        pCache->RootDir.Obj.fHaveStats      = K_FALSE;
+        pCache->RootDir.Obj.pParent         = NULL;
+        pCache->RootDir.Obj.pszName         = "";
+        pCache->RootDir.Obj.cchName         = 0;
+        pCache->RootDir.Obj.cchParent       = 0;
+#ifdef KFSCACHE_CFG_UTF16
+        pCache->RootDir.Obj.cwcName         = 0;
+        pCache->RootDir.Obj.cwcParent       = 0;
+        pCache->RootDir.Obj.pwszName        = L"";
+#endif
+
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+        pCache->RootDir.Obj.pszShortName    = NULL;
+        pCache->RootDir.Obj.cchShortName    = 0;
+        pCache->RootDir.Obj.cchShortParent  = 0;
+# ifdef KFSCACHE_CFG_UTF16
+        pCache->RootDir.Obj.cwcShortName;
+        pCache->RootDir.Obj.cwcShortParent;
+        pCache->RootDir.Obj.pwszShortName;
+# endif
+#endif
+        pCache->RootDir.cChildren           = 0;
+        pCache->RootDir.cChildrenAllocated  = 0;
+        pCache->RootDir.papChildren         = NULL;
+        pCache->RootDir.hDir                = INVALID_HANDLE_VALUE;
+        pCache->RootDir.fHashTabMask        = 255; /* 256: 26 drive letters and 102 UNCs before we're half ways. */
+        pCache->RootDir.papHashTab          = (PKFSOBJ *)kHlpAllocZ(256 * sizeof(pCache->RootDir.papHashTab[0]));
+        if (pCache->RootDir.papHashTab)
+        {
+            /* The cache itself. */
+            pCache->u32Magic                = KFSCACHE_MAGIC;
+            pCache->fFlags                  = fFlags;
+            pCache->auGenerations[0]        = KU32_MAX / 4;
+            pCache->auGenerations[1]        = KU32_MAX / 32;
+            pCache->auGenerationsMissing[0] = KU32_MAX / 256;
+            pCache->auGenerationsMissing[1] = 1;
+            pCache->cObjects                = 1;
+            pCache->cbObjects               = sizeof(pCache->RootDir)
+                                            + (pCache->RootDir.fHashTabMask + 1) * sizeof(pCache->RootDir.papHashTab[0]);
+            pCache->cPathHashHits           = 0;
+            pCache->cWalkHits               = 0;
+            pCache->cChildSearches          = 0;
+            pCache->cChildHashHits          = 0;
+            pCache->cChildHashed            = 0;
+            pCache->cChildHashTabs          = 1;
+            pCache->cChildHashEntriesTotal  = pCache->RootDir.fHashTabMask + 1;
+            pCache->cChildHashCollisions    = 0;
+            pCache->cNameChanges            = 0;
+            pCache->cNameGrowths            = 0;
+            pCache->cAnsiPaths              = 0;
+            pCache->cAnsiPathCollisions     = 0;
+            pCache->cbAnsiPaths             = 0;
+#ifdef KFSCACHE_CFG_UTF16
+            pCache->cUtf16Paths             = 0;
+            pCache->cUtf16PathCollisions    = 0;
+            pCache->cbUtf16Paths            = 0;
+#endif
+
+#ifdef KFSCACHE_CFG_LOCKING
+            {
+                KSIZE idx = K_ELEMENTS(pCache->auUserDataLocks);
+                while (idx-- > 0)
+                    InitializeCriticalSection(&pCache->auUserDataLocks[idx].CritSect);
+                InitializeCriticalSection(&pCache->u.CritSect);
+            }
+#endif
+            return pCache;
+        }
+
+        kHlpFree(pCache);
+    }
+    return NULL;
+}
+
diff --git a/src/lib/nt/kFsCache.h b/src/lib/nt/kFsCache.h
new file mode 100644
index 0000000..de0f87c
--- /dev/null
+++ b/src/lib/nt/kFsCache.h
@@ -0,0 +1,594 @@
+/* $Id: kFsCache.h 3381 2020-06-12 11:36:10Z bird $ */
+/** @file
+ * kFsCache.c - NT directory content cache.
+ */
+
+/*
+ * Copyright (c) 2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+#ifndef ___lib_nt_kFsCache_h___
+#define ___lib_nt_kFsCache_h___
+
+
+#include <k/kHlp.h>
+#include "ntstat.h"
+#ifndef NDEBUG
+# include <stdarg.h>
+#endif
+
+
+/** @def KFSCACHE_CFG_UTF16
+ * Whether to compile in the UTF-16 names support. */
+#define KFSCACHE_CFG_UTF16                  1
+/** @def KFSCACHE_CFG_SHORT_NAMES
+ * Whether to compile in the short name support. */
+#define KFSCACHE_CFG_SHORT_NAMES            1
+/** @def KFSCACHE_CFG_PATH_HASH_TAB_SIZE
+ * Size of the path hash table. */
+#define KFSCACHE_CFG_PATH_HASH_TAB_SIZE     99991
+/** The max length paths we consider. */
+#define KFSCACHE_CFG_MAX_PATH               1024
+/** The max ANSI name length. */
+#define KFSCACHE_CFG_MAX_ANSI_NAME          (256*3 + 16)
+/** The max UTF-16 name length. */
+#define KFSCACHE_CFG_MAX_UTF16_NAME         (256*2 + 16)
+/** Enables locking of the cache and thereby making it thread safe. */
+#define KFSCACHE_CFG_LOCKING                1
+
+
+
+/** Special KFSOBJ::uCacheGen number indicating that it does not apply. */
+#define KFSOBJ_CACHE_GEN_IGNORE             KU32_MAX
+
+
+/** @name KFSOBJ_TYPE_XXX - KFSOBJ::bObjType
+ * @{  */
+/** Directory, type KFSDIR. */
+#define KFSOBJ_TYPE_DIR         KU8_C(0x01)
+/** Regular file - type KFSOBJ. */
+#define KFSOBJ_TYPE_FILE        KU8_C(0x02)
+/** Other file - type KFSOBJ. */
+#define KFSOBJ_TYPE_OTHER       KU8_C(0x03)
+/** Caching of a negative result - type KFSOBJ.
+ * @remarks We will allocate enough space for the largest cache node, so this
+ *          can metamorph into any other object should it actually turn up.  */
+#define KFSOBJ_TYPE_MISSING     KU8_C(0x04)
+///** Invalidated entry flag. */
+//#define KFSOBJ_TYPE_F_INVALID   KU8_C(0x20)
+/** @} */
+
+/** @name KFSOBJ_F_XXX - KFSOBJ::fFlags
+ * @{ */
+ /** Use custom generation.
+  * @remarks This is given the value 1, as we use it as an index into
+  *          KFSCACHE::auGenerations, 0 being the default. */
+#define KFSOBJ_F_USE_CUSTOM_GEN         KU32_C(0x00000001)
+
+/** Whether the file system update the modified timestamp of directories
+ * when something is removed from it or added to it.
+ * @remarks They say NTFS is the only windows filesystem doing this.  */
+#define KFSOBJ_F_WORKING_DIR_MTIME      KU32_C(0x00000002)
+/** NTFS file system volume. */
+#define KFSOBJ_F_NTFS                   KU32_C(0x80000000)
+/** Flags that are automatically inherited. */
+#define KFSOBJ_F_INHERITED_MASK         KU32_C(0xffffffff)
+/** @} */
+
+
+#define IS_ALPHA(ch) ( ((ch) >= 'A' && (ch) <= 'Z') || ((ch) >= 'a' && (ch) <= 'z') )
+#define IS_SLASH(ch) ((ch) == '\\' || (ch) == '/')
+
+
+
+
+/** Pointer to a cache. */
+typedef struct KFSCACHE *PKFSCACHE;
+/** Pointer to a core object.  */
+typedef struct KFSOBJ *PKFSOBJ;
+/** Pointer to a directory object.  */
+typedef struct KFSDIR *PKFSDIR;
+/** Pointer to a directory hash table entry. */
+typedef struct KFSOBJHASH *PKFSOBJHASH;
+
+
+
+/** Pointer to a user data item. */
+typedef struct KFSUSERDATA *PKFSUSERDATA;
+/**
+ * User data item associated with a cache node.
+ */
+typedef struct KFSUSERDATA
+{
+    /** Pointer to the next piece of user data. */
+    PKFSUSERDATA    pNext;
+    /** The key identifying this user. */
+    KUPTR           uKey;
+    /** The destructor. */
+    void (*pfnDestructor)(PKFSCACHE pCache, PKFSOBJ pObj, PKFSUSERDATA pData);
+} KFSUSERDATA;
+
+
+/**
+ * Storage for name strings for the unlikely event that they should grow in
+ * length after the KFSOBJ was created.
+ */
+typedef struct KFSOBJNAMEALLOC
+{
+    /** Size of the allocation. */
+    KU32        cb;
+    /** The space for names. */
+    char        abSpace[1];
+} KFSOBJNAMEALLOC;
+/** Name growth allocation. */
+typedef KFSOBJNAMEALLOC *PKFSOBJNAMEALLOC;
+
+
+/**
+ * Base cache node.
+ */
+typedef struct KFSOBJ
+{
+    /** Magic value (KFSOBJ_MAGIC). */
+    KU32                u32Magic;
+    /** Number of references. */
+    KU32 volatile       cRefs;
+    /** The cache generation, see KFSOBJ_CACHE_GEN_IGNORE. */
+    KU32                uCacheGen;
+    /** The object type, KFSOBJ_TYPE_XXX.   */
+    KU8                 bObjType;
+    /** Set if the Stats member is valid, clear if not. */
+    KBOOL               fHaveStats;
+    /** Internal debug field for counting path hash references.
+     * @internal  */
+    KU8                 cPathHashRefs;
+    /** Index into KFSCACHE::auUserData. */
+    KU8                 idxUserDataLock;
+    /** Flags, KFSOBJ_F_XXX. */
+    KU32                fFlags;
+
+    /** Hash value of the name inserted into the parent hash table.
+     * This is 0 if not inserted.  Names are only hashed and inserted as they are
+     * first found thru linear searching of its siblings, and which name it is
+     * dependens on the lookup function (W or A) and whether the normal name or
+     * short name seems to have matched.
+     *
+     * @note It was ruled out as too much work to hash and track all four names,
+     *       so instead this minimalist approach was choosen in stead. */
+    KU32                uNameHash;
+    /** Pointer to the next child with the same name hash value. */
+    PKFSOBJ             pNextNameHash;
+    /** Pointer to the parent (directory).
+     * This is only NULL for a root. */
+    PKFSDIR             pParent;
+
+    /** The directory name.  (Allocated after the structure.) */
+    const char         *pszName;
+    /** The length of pszName. */
+    KU16                cchName;
+    /** The length of the parent path (up to where pszName starts).
+     * @note This is valuable when constructing an absolute path to this node by
+     *       means of the parent pointer (no need for recursion). */
+    KU16                cchParent;
+#ifdef KFSCACHE_CFG_UTF16
+    /** The length of pwszName (in wchar_t's). */
+    KU16                cwcName;
+    /** The length of the parent UTF-16 path (in wchar_t's).
+     * @note This is valuable when constructing an absolute path to this node by
+     *       means of the parent pointer (no need for recursion). */
+    KU16                cwcParent;
+    /** The UTF-16 object name.  (Allocated after the structure.) */
+    const wchar_t      *pwszName;
+#endif
+
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+    /** The short object name.  (Allocated after the structure, could be same
+     *  as pszName.) */
+    const char         *pszShortName;
+    /** The length of pszShortName. */
+    KU16                cchShortName;
+    /** The length of the short parent path (up to where pszShortName starts). */
+    KU16                cchShortParent;
+# ifdef KFSCACHE_CFG_UTF16
+    /** The length of pwszShortName (in wchar_t's). */
+    KU16                cwcShortName;
+    /** The length of the short parent UTF-16 path (in wchar_t's). */
+    KU16                cwcShortParent;
+    /** The UTF-16 short object name.  (Allocated after the structure, possibly
+     *  same as pwszName.) */
+    const wchar_t      *pwszShortName;
+# endif
+#endif
+
+    /** Allocation for handling name length increases. */
+    PKFSOBJNAMEALLOC    pNameAlloc;
+
+    /** Pointer to the first user data item */
+    PKFSUSERDATA        pUserDataHead;
+
+    /** Stats - only valid when fHaveStats is set. */
+    BirdStat_T          Stats;
+} KFSOBJ;
+
+/** The magic for a KFSOBJ structure (Thelonious Sphere Monk). */
+#define KFSOBJ_MAGIC                KU32_C(0x19171010)
+
+
+/**
+ * Directory node in the cache.
+ */
+typedef struct KFSDIR
+{
+    /** The core object information. */
+    KFSOBJ             Obj;
+
+    /** Child objects. */
+    PKFSOBJ            *papChildren;
+    /** The number of child objects. */
+    KU32                cChildren;
+    /** The allocated size of papChildren. */
+    KU32                cChildrenAllocated;
+
+    /** Pointer to the child hash table. */
+    PKFSOBJ            *papHashTab;
+    /** The mask shift of the hash table.
+     * Hash table size is a power of two, this is the size minus one.
+     *
+     * @remarks The hash table is optional and populated by lookup hits.  The
+     *          assumption being that a lookup is repeated and will choose a good
+     *          name to hash on.  We've got up to 4 different hashes, so this
+     *          was the easy way out. */
+    KU32                fHashTabMask;
+
+    /** Handle to the directory (we generally keep it open). */
+#ifndef DECLARE_HANDLE
+    KUPTR               hDir;
+#else
+    HANDLE              hDir;
+#endif
+    /** The device number we queried/inherited when opening it. */
+    KU64                uDevNo;
+
+    /** The last write time sampled the last time the directory was refreshed.
+     * @remarks May differ from st_mtim because it will be updated when the
+     *          parent directory is refreshed. */
+    KI64                iLastWrite;
+    /** The time that iLastWrite was read. */
+    KI64                iLastPopulated;
+
+    /** Set if populated. */
+    KBOOL               fPopulated;
+    /** Set if it needs re-populated. */
+    KBOOL               fNeedRePopulating;
+} KFSDIR;
+
+
+/**
+ * Lookup errors.
+ */
+typedef enum KFSLOOKUPERROR
+{
+    /** Lookup was a success. */
+    KFSLOOKUPERROR_SUCCESS = 0,
+    /** A path component was not found. */
+    KFSLOOKUPERROR_PATH_COMP_NOT_FOUND,
+    /** A path component is not a directory. */
+    KFSLOOKUPERROR_PATH_COMP_NOT_DIR,
+    /** The final path entry is not a directory (trailing slash). */
+    KFSLOOKUPERROR_NOT_DIR,
+    /** Not found. */
+    KFSLOOKUPERROR_NOT_FOUND,
+    /** The path is too long. */
+    KFSLOOKUPERROR_PATH_TOO_LONG,
+    /** The path is too short. */
+    KFSLOOKUPERROR_PATH_TOO_SHORT,
+    /** Unsupported path type. */
+    KFSLOOKUPERROR_UNSUPPORTED,
+    /** We're out of memory. */
+    KFSLOOKUPERROR_OUT_OF_MEMORY,
+
+    /** Error opening directory. */
+    KFSLOOKUPERROR_DIR_OPEN_ERROR,
+    /** Error reading directory. */
+    KFSLOOKUPERROR_DIR_READ_ERROR,
+    /** UTF-16 to ANSI conversion error. */
+    KFSLOOKUPERROR_ANSI_CONVERSION_ERROR,
+    /** ANSI to UTF-16 conversion error. */
+    KFSLOOKUPERROR_UTF16_CONVERSION_ERROR,
+    /** Internal error. */
+    KFSLOOKUPERROR_INTERNAL_ERROR
+} KFSLOOKUPERROR;
+
+
+/** Pointer to an ANSI path hash table entry. */
+typedef struct KFSHASHA *PKFSHASHA;
+/**
+ * ANSI file system path hash table entry.
+ * The path hash table allows us to skip parsing and walking a path.
+ */
+typedef struct KFSHASHA
+{
+    /** Next entry with the same hash table slot. */
+    PKFSHASHA           pNext;
+    /** Path hash value. */
+    KU32                uHashPath;
+    /** The path length. */
+    KU16                cchPath;
+    /** Set if aboslute path.   */
+    KBOOL               fAbsolute;
+    /** Index into KFSCACHE:auGenerationsMissing when pFsObj is NULL. */
+    KU8                 idxMissingGen;
+    /** The cache generation ID. */
+    KU32                uCacheGen;
+    /** The lookup error (when pFsObj is NULL). */
+    KFSLOOKUPERROR      enmError;
+    /** The path.  (Allocated after the structure.) */
+    const char         *pszPath;
+    /** Pointer to the matching FS object.
+     * This is NULL for negative path entries? */
+    PKFSOBJ             pFsObj;
+} KFSHASHA;
+
+
+#ifdef KFSCACHE_CFG_UTF16
+/** Pointer to an UTF-16 path hash table entry. */
+typedef struct KFSHASHW *PKFSHASHW;
+/**
+ * UTF-16 file system path hash table entry. The path hash table allows us
+ * to skip parsing and walking a path.
+ */
+typedef struct KFSHASHW
+{
+    /** Next entry with the same hash table slot. */
+    PKFSHASHW           pNext;
+    /** Path hash value. */
+    KU32                uHashPath;
+    /** The path length (in wchar_t units). */
+    KU16                cwcPath;
+    /** Set if aboslute path.   */
+    KBOOL               fAbsolute;
+    /** Index into KFSCACHE:auGenerationsMissing when pFsObj is NULL. */
+    KU8                 idxMissingGen;
+    /** The cache generation ID. */
+    KU32                uCacheGen;
+    /** The lookup error (when pFsObj is NULL). */
+    KFSLOOKUPERROR      enmError;
+    /** The path.  (Allocated after the structure.) */
+    const wchar_t      *pwszPath;
+    /** Pointer to the matching FS object.
+     * This is NULL for negative path entries? */
+    PKFSOBJ             pFsObj;
+} KFSHASHW;
+#endif
+
+
+/** @def KFSCACHE_LOCK
+ *  Locks the cache exclusively. */
+/** @def KFSCACHE_UNLOCK
+ *  Counterpart to KFSCACHE_LOCK. */
+/** @def KFSCACHE_OBJUSERDATA_LOCK
+ *  Locks the user data list of an object exclusively. */
+/** @def KFSCACHE_OBJUSERDATA_UNLOCK
+ *  Counterpart to KFSCACHE_OBJUSERDATA_LOCK. */
+#ifdef KFSCACHE_CFG_LOCKING
+# define KFSCACHE_LOCK(a_pCache)        EnterCriticalSection(&(a_pCache)->u.CritSect)
+# define KFSCACHE_UNLOCK(a_pCache)      LeaveCriticalSection(&(a_pCache)->u.CritSect)
+# define KFSCACHE_OBJUSERDATA_LOCK(a_pCache, a_pObj) do { \
+        KU8 idxUserDataLock = (a_pObj)->idxUserDataLock; \
+        if (idxUserDataLock != KU8_MAX) \
+        { /* likely */ } \
+        else \
+            idxUserDataLock = kFsCacheObjGetUserDataLockIndex(a_pCache, a_pObj); \
+        idxUserDataLock &= (KU8)(K_ELEMENTS((a_pCache)->auUserDataLocks) - 1); \
+        EnterCriticalSection(&(a_pCache)->auUserDataLocks[idxUserDataLock].CritSect); \
+    } while (0)
+# define KFSCACHE_OBJUSERDATA_UNLOCK(a_pCache, a_pObj) \
+    LeaveCriticalSection(&(a_pCache)->auUserDataLocks[(a_pObj)->idxUserDataLock & (K_ELEMENTS((a_pCache)->auUserDataLocks) - 1)].CritSect)
+#else
+# define KFSCACHE_LOCK(a_pCache)        do { } while (0)
+# define KFSCACHE_UNLOCK(a_pCache)      do { } while (0)
+# define KFSCACHE_OBJUSERDATA_LOCK(a_pCache, a_pObj)    do { } while (0)
+# define KFSCACHE_OBJUSERDATA_UNLOCK(a_pCache, a_pObj)  do { } while (0)
+#endif
+
+
+/** @name KFSCACHE_F_XXX
+ * @{ */
+/** Whether to cache missing directory entries (KFSOBJ_TYPE_MISSING). */
+#define KFSCACHE_F_MISSING_OBJECTS  KU32_C(0x00000001)
+/** Whether to cache missing paths. */
+#define KFSCACHE_F_MISSING_PATHS    KU32_C(0x00000002)
+/** @} */
+
+
+/**
+ * Directory cache instance.
+ */
+typedef struct KFSCACHE
+{
+    /** Magic value (KFSCACHE_MAGIC). */
+    KU32                u32Magic;
+    /** Cache flags. */
+    KU32                fFlags;
+
+    /** The default and custom cache generations for stuff that exists, indexed by
+     *  KFSOBJ_F_USE_CUSTOM_GEN.
+     *
+     * The custom generation can be used to invalidate parts of the file system that
+     * are known to be volatile without triggering refreshing of the more static
+     * parts.  Like the 'out' directory in a kBuild setup or a 'TEMP' directory are
+     * expected to change and you need to invalidate the caching of these frequently
+     * to stay on top of things.  Whereas the sources, headers, compilers, sdk,
+     * ddks, windows directory and such generally doesn't change all that often.
+     */
+    KU32                auGenerations[2];
+    /** The current cache generation for missing objects, negative results, ++.
+     * This comes with a custom variant too.  Indexed by KFSOBJ_F_USE_CUSTOM_GEN. */
+    KU32                auGenerationsMissing[2];
+
+    /** Number of cache objects. */
+    KSIZE               cObjects;
+    /** Memory occupied by the cache object structures. */
+    KSIZE               cbObjects;
+    /** Number of lookups. */
+    KSIZE               cLookups;
+    /** Number of hits in the path hash tables. */
+    KSIZE               cPathHashHits;
+    /** Number of hits walking the file system hierarchy. */
+    KSIZE               cWalkHits;
+    /** Number of child searches. */
+    KSIZE               cChildSearches;
+    /** Number of cChildLookups resolved thru hash table hits. */
+    KSIZE               cChildHashHits;
+    /** The number of child hash tables. */
+    KSIZE               cChildHashTabs;
+    /** The sum of all child hash table sizes. */
+    KSIZE               cChildHashEntriesTotal;
+    /** Number of children inserted into the hash tables. */
+    KSIZE               cChildHashed;
+    /** Number of collisions in the child hash tables. */
+    KSIZE               cChildHashCollisions;
+    /** Number times a object name changed. */
+    KSIZE               cNameChanges;
+    /** Number times a object name grew and needed KFSOBJNAMEALLOC.
+     *  (Subset of cNameChanges) */
+    KSIZE               cNameGrowths;
+
+    /** The root directory. */
+    KFSDIR              RootDir;
+
+#ifdef KFSCACHE_CFG_LOCKING
+    union
+    {
+# ifdef _WINBASE_
+        CRITICAL_SECTION    CritSect;
+# endif
+        KU64                abPadding[2 * 4 + 4 * sizeof(void *)];
+    }
+    /** Critical section protecting the cache. */
+                        u,
+    /** Critical section protecting the pUserDataHead of objects.
+     * @note Array size must be a power of two. */
+                        auUserDataLocks[8];
+    /** The next auUserData index. */
+    KU8                 idxUserDataNext;
+#endif
+
+    /** File system hash table for ANSI filename strings. */
+    PKFSHASHA           apAnsiPaths[KFSCACHE_CFG_PATH_HASH_TAB_SIZE];
+    /** Number of paths in the apAnsiPaths hash table. */
+    KSIZE               cAnsiPaths;
+    /** Number of collisions in the apAnsiPaths hash table. */
+    KSIZE               cAnsiPathCollisions;
+    /** Amount of memory used by the path entries. */
+    KSIZE               cbAnsiPaths;
+
+#ifdef KFSCACHE_CFG_UTF16
+    /** Number of paths in the apUtf16Paths hash table. */
+    KSIZE               cUtf16Paths;
+    /** Number of collisions in the apUtf16Paths hash table. */
+    KSIZE               cUtf16PathCollisions;
+    /** Amount of memory used by the UTF-16 path entries. */
+    KSIZE               cbUtf16Paths;
+    /** File system hash table for UTF-16 filename strings. */
+    PKFSHASHW           apUtf16Paths[KFSCACHE_CFG_PATH_HASH_TAB_SIZE];
+#endif
+} KFSCACHE;
+
+/** Magic value for KFSCACHE::u32Magic (Jon Batiste).  */
+#define KFSCACHE_MAGIC              KU32_C(0x19861111)
+
+
+/** @def KW_LOG
+ * Generic logging.
+ * @param a     Argument list for kFsCacheDbgPrintf  */
+#if 1 /*def NDEBUG - enable when needed! */
+# define KFSCACHE_LOG(a) do { } while (0)
+#else
+# define KFSCACHE_LOG(a) kFsCacheDbgPrintf a
+void        kFsCacheDbgPrintfV(const char *pszFormat, va_list va);
+void        kFsCacheDbgPrintf(const char *pszFormat, ...);
+#endif
+
+
+KBOOL       kFsCacheDirEnsurePopuplated(PKFSCACHE pCache, PKFSDIR pDir, KFSLOOKUPERROR *penmError);
+KBOOL       kFsCacheDirAddChild(PKFSCACHE pCache, PKFSDIR pParent, PKFSOBJ pChild, KFSLOOKUPERROR *penmError);
+PKFSOBJ     kFsCacheCreateObject(PKFSCACHE pCache, PKFSDIR pParent,
+                                 char const *pszName, KU16 cchName, wchar_t const *pwszName, KU16 cwcName,
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                 char const *pszShortName, KU16 cchShortName, wchar_t const *pwszShortName, KU16 cwcShortName,
+#endif
+                                 KU8 bObjType, KFSLOOKUPERROR *penmError);
+PKFSOBJ     kFsCacheCreateObjectW(PKFSCACHE pCache, PKFSDIR pParent, wchar_t const *pwszName, KU32 cwcName,
+#ifdef KFSCACHE_CFG_SHORT_NAMES
+                                  wchar_t const *pwszShortName, KU32 cwcShortName,
+#endif
+                                  KU8 bObjType, KFSLOOKUPERROR *penmError);
+PKFSOBJ     kFsCacheLookupA(PKFSCACHE pCache, const char *pszPath, KFSLOOKUPERROR *penmError);
+PKFSOBJ     kFsCacheLookupW(PKFSCACHE pCache, const wchar_t *pwszPath, KFSLOOKUPERROR *penmError);
+PKFSOBJ     kFsCacheLookupRelativeToDirA(PKFSCACHE pCache, PKFSDIR pParent, const char *pszPath, KU32 cchPath, KU32 fFlags,
+                                         KFSLOOKUPERROR *penmError, PKFSOBJ *ppLastAncestor);
+PKFSOBJ     kFsCacheLookupRelativeToDirW(PKFSCACHE pCache, PKFSDIR pParent, const wchar_t *pwszPath, KU32 cwcPath, KU32 fFlags,
+                                         KFSLOOKUPERROR *penmError, PKFSOBJ *ppLastAncestor);
+PKFSOBJ     kFsCacheLookupWithLengthA(PKFSCACHE pCache, const char *pchPath, KSIZE cchPath, KFSLOOKUPERROR *penmError);
+PKFSOBJ     kFsCacheLookupWithLengthW(PKFSCACHE pCache, const wchar_t *pwcPath, KSIZE cwcPath, KFSLOOKUPERROR *penmError);
+PKFSOBJ     kFsCacheLookupNoMissingA(PKFSCACHE pCache, const char *pszPath, KFSLOOKUPERROR *penmError);
+PKFSOBJ     kFsCacheLookupNoMissingW(PKFSCACHE pCache, const wchar_t *pwszPath, KFSLOOKUPERROR *penmError);
+
+/** @name KFSCACHE_LOOKUP_F_XXX - lookup flags
+ * @{ */
+/** No inserting new cache entries.
+ * This effectively prevent directories from being repopulated too.  */
+#define KFSCACHE_LOOKUP_F_NO_INSERT     KU32_C(1)
+/** No refreshing cache entries. */
+#define KFSCACHE_LOOKUP_F_NO_REFRESH    KU32_C(2)
+/** @} */
+
+KU32        kFsCacheObjRelease(PKFSCACHE pCache, PKFSOBJ pObj);
+KU32        kFsCacheObjReleaseTagged(PKFSCACHE pCache, PKFSOBJ pObj, const char *pszWhere);
+#ifndef NDEBUG /* enable to debug object release. */
+# define kFsCacheObjRelease(a_pCache, a_pObj) kFsCacheObjReleaseTagged(a_pCache, a_pObj, __FUNCTION__)
+#endif
+KU32        kFsCacheObjRetain(PKFSOBJ pObj);
+PKFSUSERDATA kFsCacheObjAddUserData(PKFSCACHE pCache, PKFSOBJ pObj, KUPTR uKey, KSIZE cbUserData);
+PKFSUSERDATA kFsCacheObjGetUserData(PKFSCACHE pCache, PKFSOBJ pObj, KUPTR uKey);
+KU8         kFsCacheObjGetUserDataLockIndex(PKFSCACHE pCache, PKFSOBJ pObj);
+KBOOL       kFsCacheObjGetFullPathA(PKFSOBJ pObj, char *pszPath, KSIZE cbPath, char chSlash);
+KBOOL       kFsCacheObjGetFullPathW(PKFSOBJ pObj, wchar_t *pwszPath, KSIZE cwcPath, wchar_t wcSlash);
+KBOOL       kFsCacheObjGetFullShortPathA(PKFSOBJ pObj, char *pszPath, KSIZE cbPath, char chSlash);
+KBOOL       kFsCacheObjGetFullShortPathW(PKFSOBJ pObj, wchar_t *pwszPath, KSIZE cwcPath, wchar_t wcSlash);
+
+KBOOL       kFsCacheFileSimpleOpenReadClose(PKFSCACHE pCache, PKFSOBJ pFileObj, KU64 offStart, void *pvBuf, KSIZE cbToRead);
+
+PKFSCACHE   kFsCacheCreate(KU32 fFlags);
+void        kFsCacheDestroy(PKFSCACHE);
+void        kFsCacheInvalidateMissing(PKFSCACHE pCache);
+void        kFsCacheInvalidateAll(PKFSCACHE pCache);
+void        kFsCacheInvalidateAllAndCloseDirs(PKFSCACHE pCache, KBOOL fIncludingRoot);
+void        kFsCacheInvalidateCustomMissing(PKFSCACHE pCache);
+void        kFsCacheInvalidateCustomBoth(PKFSCACHE pCache);
+KBOOL       kFsCacheSetupCustomRevisionForTree(PKFSCACHE pCache, PKFSOBJ pRoot);
+KBOOL       kFsCacheInvalidateDeletedDirectoryA(PKFSCACHE pCache, const char *pszDir);
+
+#endif
diff --git a/src/lib/nt/nt_child_inject_standard_handles.c b/src/lib/nt/nt_child_inject_standard_handles.c
new file mode 100644
index 0000000..93b139d
--- /dev/null
+++ b/src/lib/nt/nt_child_inject_standard_handles.c
@@ -0,0 +1,462 @@
+/* $Id: nt_child_inject_standard_handles.c 3584 2023-01-20 15:29:36Z bird $ */
+/** @file
+ * Injecting standard handles into a child process.
+ */
+
+/*
+ * Copyright (c) 2004-2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <Windows.h>
+#include <Winternl.h>
+#include <stdio.h>
+#include <assert.h>
+#include <k/kDefs.h>
+#include "nt_child_inject_standard_handles.h"
+
+/**
+ * Wrapper around ReadProcessMemory in case WOW64 tricks are needed.
+ *
+ * @returns Success indicator.
+ * @param   hProcess    The target process.
+ * @param   ullSrc      The source address (in @a hProcess).
+ * @param   pvDst       The target address (this process).
+ * @param   cbToRead    How much to read.
+ * @param   pcbRead     Where to return how much was actually read.
+ */
+static BOOL MyReadProcessMemory(HANDLE hProcess, ULONGLONG ullSrc, void *pvDst, SIZE_T cbToRead, SIZE_T *pcbRead)
+{
+#if K_ARCH_BITS != 64
+    if (ullSrc + cbToRead - 1 > ~(uintptr_t)0)
+    {
+        typedef NTSTATUS(NTAPI *PFN_NtWow64ReadVirtualMemory64)(HANDLE, ULONGLONG, PVOID, ULONGLONG, PULONGLONG);
+        static PFN_NtWow64ReadVirtualMemory64 volatile      s_pfnNtWow64ReadVirtualMemory64= NULL;
+        static BOOL volatile                                s_fInitialized = FALSE;
+        PFN_NtWow64ReadVirtualMemory64                      pfnNtWow64ReadVirtualMemory64 = s_pfnNtWow64ReadVirtualMemory64;
+        if (!pfnNtWow64ReadVirtualMemory64 && !s_fInitialized)
+        {
+            *(FARPROC *)&pfnNtWow64ReadVirtualMemory64 = GetProcAddress(GetModuleHandleA("NTDLL.DLL"), "NtWow64ReadVirtualMemory64");
+            s_pfnNtWow64ReadVirtualMemory64 = pfnNtWow64ReadVirtualMemory64;
+        }
+        if (pfnNtWow64ReadVirtualMemory64)
+        {
+            struct
+            {
+                ULONGLONG volatile  ullBefore;
+                ULONGLONG           cbRead64;
+                ULONGLONG volatile  ullAfter;
+            } Wtf = { ~(ULONGLONG)0, 0, ~(ULONGLONG)0 };
+            NTSTATUS  rcNt = pfnNtWow64ReadVirtualMemory64(hProcess, ullSrc, pvDst, cbToRead, &Wtf.cbRead64);
+            *pcbRead = (SIZE_T)Wtf.cbRead64;
+            SetLastError(rcNt); /* lazy bird */
+            return NT_SUCCESS(rcNt);
+        }
+    }
+#endif
+    return ReadProcessMemory(hProcess, (void *)(uintptr_t)ullSrc, pvDst, cbToRead, pcbRead);
+}
+
+
+/**
+ * Wrapper around WriteProcessMemory in case WOW64 tricks are needed.
+ *
+ * @returns Success indicator.
+ * @param   hProcess            The target process.
+ * @param   ullDst              The target address (in @a hProcess).
+ * @param   pvSrc               The source address (this process).
+ * @param   cbToWrite           How much to write.
+ * @param   pcbWritten          Where to return how much was actually written.
+ */
+static BOOL MyWriteProcessMemory(HANDLE hProcess, ULONGLONG ullDst, void const *pvSrc, SIZE_T cbToWrite, SIZE_T *pcbWritten)
+{
+#if K_ARCH_BITS != 64
+    if (ullDst + cbToWrite - 1 > ~(uintptr_t)0)
+    {
+        typedef NTSTATUS (NTAPI *PFN_NtWow64WriteVirtualMemory64)(HANDLE, ULONGLONG, VOID const *, ULONGLONG, PULONGLONG);
+        static PFN_NtWow64WriteVirtualMemory64 volatile     s_pfnNtWow64WriteVirtualMemory64= NULL;
+        static BOOL volatile                                s_fInitialized = FALSE;
+        PFN_NtWow64WriteVirtualMemory64                     pfnNtWow64WriteVirtualMemory64 = s_pfnNtWow64WriteVirtualMemory64;
+        if (!pfnNtWow64WriteVirtualMemory64 && !s_fInitialized)
+        {
+            *(FARPROC *)&pfnNtWow64WriteVirtualMemory64 = GetProcAddress(GetModuleHandleA("NTDLL.DLL"), "NtWow64WriteVirtualMemory64");
+            s_pfnNtWow64WriteVirtualMemory64      = pfnNtWow64WriteVirtualMemory64;
+        }
+        if (pfnNtWow64WriteVirtualMemory64)
+        {
+            struct
+            {
+                ULONGLONG volatile  ullBefore;
+                ULONGLONG           cbWritten64;
+                ULONGLONG volatile  ullAfter;
+            } Wtf = { ~(ULONGLONG)0, 0, ~(ULONGLONG)0 };
+            NTSTATUS  rcNt = pfnNtWow64WriteVirtualMemory64(hProcess, ullDst, pvSrc, cbToWrite, &Wtf.cbWritten64);
+            *pcbWritten = (SIZE_T)Wtf.cbWritten64;
+            SetLastError(rcNt); /* lazy bird */
+            return NT_SUCCESS(rcNt);
+        }
+    }
+#endif
+    return WriteProcessMemory(hProcess, (void *)(uintptr_t)ullDst, pvSrc, cbToWrite, pcbWritten);
+}
+
+
+/**
+ * Injects standard handles into a child process (created suspended).
+ *
+ * @returns 0 on success.  On failure a non-zero windows error or NT status,
+ *          with details in @a pszErr.
+ * @param   hProcess    The child process (created suspended).
+ * @param   pafReplace  Selects which handles to actually replace (TRUE) and
+ *                      which to leave as-is (FALSE).  The first entry is
+ *                      starndard input, second is standard output, and the
+ *                      final is standard error.
+ * @param   pahHandles  The handle in the current process to inject into the
+ *                      child process.  This runs parallel to pafReplace.  The
+ *                      values NULL and INVALID_HANDLE_VALUE will be written
+ *                      directly to the child without duplication.
+ * @param   pszErr      Pointer to error message buffer.
+ * @param   cbErr       Size of error message buffer.
+ */
+int nt_child_inject_standard_handles(HANDLE hProcess, BOOL pafReplace[3], HANDLE pahHandles[3], char *pszErr, size_t cbErr)
+{
+    typedef NTSTATUS (NTAPI *PFN_NtQueryInformationProcess)(HANDLE, PROCESSINFOCLASS, PVOID, ULONG, PULONG);
+    static PFN_NtQueryInformationProcess volatile       s_pfnNtQueryInformationProcess = NULL;
+    PFN_NtQueryInformationProcess                       pfnNtQueryInformationProcess;
+#if K_ARCH_BITS != 64
+    static PFN_NtQueryInformationProcess volatile       s_pfnNtWow64QueryInformationProcess64 = NULL;
+    PFN_NtQueryInformationProcess                       pfnNtWow64QueryInformationProcess64;
+
+    static BOOL                 s_fHostIs64Bit = K_ARCH_BITS == 64;
+    static BOOL volatile        s_fCheckedHost = FALSE;
+#endif
+
+    static const unsigned       s_offProcessParametersInPeb32 = 0x10;
+    static const unsigned       s_offProcessParametersInPeb64 = 0x20;
+    static const unsigned       s_offStandardInputInProcParams32 = 0x18;
+    static const unsigned       s_offStandardInputInProcParams64 = 0x20;
+    static const char * const   s_apszNames[3] = { "standard input", "standard  output", "standard  error" };
+
+
+    ULONG                       cbActual1 = 0;
+    union
+    {
+        PROCESS_BASIC_INFORMATION Natural;
+        struct
+        {
+            NTSTATUS    ExitStatus;
+            ULONGLONG   PebBaseAddress;
+            ULONGLONG   AffinityMask;
+            ULONG       BasePriority;
+            ULONGLONG   UniqueProcessId;
+            ULONGLONG   InheritedFromUniqueProcessId;
+        } Wow64;
+    }                           BasicInfo = { { 0, 0, } };
+    ULONGLONG                   ullBasicInfoPeb;
+    NTSTATUS                    rcNt;
+    ULONGLONG                   ullPeb32 = 0;
+    ULONGLONG                   ullPeb64 = 0;
+    ULONGLONG                   ullProcParams32 = 0;
+    ULONGLONG                   ullProcParams64 = 0;
+    DWORD                       au32Handles[3] = { 0, 0, 0 };
+    ULONGLONG                   au64Handles[3] = { 0, 0, 0 };
+    unsigned                    iFirstToInject;
+    unsigned                    cHandlesToInject;
+    unsigned                    i;
+
+    /*
+     * Analyze the input to figure out exactly what we need to do.
+     */
+    iFirstToInject = 0;
+    while (iFirstToInject < 3 && !pafReplace[iFirstToInject])
+        iFirstToInject++;
+    if (iFirstToInject >= 3)
+        return 0;
+
+    cHandlesToInject = 3 - iFirstToInject;
+    while (   cHandlesToInject > 1
+           && !pafReplace[iFirstToInject + cHandlesToInject - 1])
+        cHandlesToInject--;
+
+#if K_ARCH_BITS != 64
+    /*
+     * Determine host bit count first time through.
+     */
+    if (!s_fCheckedHost)
+    {
+        BOOL fAmIWow64 = FALSE;
+        if (   IsWow64Process(GetCurrentProcess(), &fAmIWow64)
+            && fAmIWow64)
+            s_fHostIs64Bit = TRUE;
+        else
+            s_fHostIs64Bit = FALSE;
+        s_fCheckedHost = TRUE;
+    }
+#endif
+
+    /*
+     * Resolve NT API first time through.
+     */
+    pfnNtQueryInformationProcess        = s_pfnNtQueryInformationProcess;
+#if K_ARCH_BITS != 64
+    pfnNtWow64QueryInformationProcess64 = s_pfnNtWow64QueryInformationProcess64;
+#endif
+    if (!pfnNtQueryInformationProcess)
+    {
+        HMODULE hmodNtDll = GetModuleHandleA("NTDLL.DLL");
+#if K_ARCH_BITS != 64
+        *(FARPROC *)&pfnNtWow64QueryInformationProcess64 = GetProcAddress(hmodNtDll, "NtWow64QueryInformationProcess64");
+        s_pfnNtWow64QueryInformationProcess64 = pfnNtWow64QueryInformationProcess64;
+#endif
+        *(FARPROC *)&pfnNtQueryInformationProcess = GetProcAddress(hmodNtDll, "NtQueryInformationProcess");
+        if (!pfnNtQueryInformationProcess)
+        {
+            _snprintf(pszErr, cbErr, "The NtQueryInformationProcess API was not found in NTDLL");
+            return ERROR_PROC_NOT_FOUND;
+        }
+        s_pfnNtQueryInformationProcess = pfnNtQueryInformationProcess;
+    }
+
+    /*
+     * Get the PEB address.
+     *
+     * If we're a WOW64 process, we must use NtWow64QueryInformationProcess64
+     * here or the PEB address will be set to zero for 64-bit children.
+     */
+#if K_ARCH_BITS != 64
+    if (s_fHostIs64Bit && pfnNtWow64QueryInformationProcess64)
+    {
+        rcNt = pfnNtWow64QueryInformationProcess64(hProcess, ProcessBasicInformation, &BasicInfo.Wow64,
+                                                   sizeof(BasicInfo.Wow64), &cbActual1);
+        if (!NT_SUCCESS(rcNt))
+        {
+            _snprintf(pszErr, cbErr, "NtWow64QueryInformationProcess64 failed: %#x", rcNt);
+            return rcNt;
+        }
+        if ((ULONGLONG)BasicInfo.Wow64.PebBaseAddress < 0x1000)
+        {
+            _snprintf(pszErr, cbErr, "NtWow64QueryInformationProcess64 returned bad PebBaseAddress: %#llx",
+                      BasicInfo.Wow64.PebBaseAddress);
+            return ERROR_INVALID_ADDRESS;
+        }
+        ullBasicInfoPeb = BasicInfo.Wow64.PebBaseAddress;
+    }
+    else
+#endif
+    {
+        rcNt = pfnNtQueryInformationProcess(hProcess, ProcessBasicInformation, &BasicInfo.Natural,
+                                            sizeof(BasicInfo.Natural), &cbActual1);
+        if (!NT_SUCCESS(rcNt))
+        {
+            _snprintf(pszErr, cbErr, "NtQueryInformationProcess failed: %#x", rcNt);
+            return rcNt;
+        }
+        if ((uintptr_t)BasicInfo.Natural.PebBaseAddress < 0x1000)
+        {
+            _snprintf(pszErr, cbErr, "NtQueryInformationProcess returned bad PebBaseAddress: %#llx",
+                      (ULONGLONG)BasicInfo.Natural.PebBaseAddress);
+            return ERROR_INVALID_ADDRESS;
+        }
+        ullBasicInfoPeb = (uintptr_t)BasicInfo.Natural.PebBaseAddress;
+    }
+
+    /*
+     * Get the 32-bit PEB if it's a WOW64 process.
+     * This query should return 0 for non-WOW64 processes, but we quietly
+     * ignore failures and assume non-WOW64 child.
+     */
+#if K_ARCH_BITS != 64
+    if (!s_fHostIs64Bit)
+        ullPeb32 = ullBasicInfoPeb;
+    else
+#endif
+    {
+        ULONG_PTR uPeb32Ptr = 0;
+        cbActual1 = 0;
+        rcNt = pfnNtQueryInformationProcess(hProcess, ProcessWow64Information, &uPeb32Ptr, sizeof(uPeb32Ptr), &cbActual1);
+        if (NT_SUCCESS(rcNt) && uPeb32Ptr != 0)
+        {
+            ullPeb32 = uPeb32Ptr;
+            ullPeb64 = ullBasicInfoPeb;
+#if K_ARCH_BITS != 64
+            assert(ullPeb64 != ullPeb32);
+            if (ullPeb64 == ullPeb32)
+                ullPeb64 = 0;
+#endif
+        }
+        else
+        {
+            assert(NT_SUCCESS(rcNt));
+            ullPeb64 = ullBasicInfoPeb;
+        }
+    }
+
+    /*
+     * Read the process parameter pointers.
+     */
+    if (ullPeb32)
+    {
+        DWORD  uProcParamPtr = 0;
+        SIZE_T cbRead = 0;
+        if (   MyReadProcessMemory(hProcess, ullPeb32 + s_offProcessParametersInPeb32,
+                                   &uProcParamPtr, sizeof(uProcParamPtr), &cbRead)
+            && cbRead == sizeof(uProcParamPtr))
+            ullProcParams32 = uProcParamPtr;
+        else
+        {
+            DWORD dwErr = GetLastError();
+            _snprintf(pszErr, cbErr, "Failed to read PEB32!ProcessParameter at %#llx: %u/%#x (%u read)",
+                      ullPeb32 + s_offProcessParametersInPeb32, dwErr, dwErr, cbRead);
+            return dwErr ? dwErr : -1;
+        }
+        if (uProcParamPtr < 0x1000)
+        {
+            _snprintf(pszErr, cbErr, "Bad PEB32!ProcessParameter value: %#llx", ullProcParams32);
+            return ERROR_INVALID_ADDRESS;
+        }
+    }
+
+    if (ullPeb64)
+    {
+        ULONGLONG  uProcParamPtr = 0;
+        SIZE_T     cbRead = 0;
+        if (   MyReadProcessMemory(hProcess, ullPeb64 + s_offProcessParametersInPeb64,
+                                   &uProcParamPtr, sizeof(uProcParamPtr), &cbRead)
+            && cbRead == sizeof(uProcParamPtr))
+            ullProcParams64 = uProcParamPtr;
+        else
+        {
+            DWORD dwErr = GetLastError();
+            _snprintf(pszErr, cbErr, "Failed to read PEB64!ProcessParameter at %p: %u/%#x (%u read)",
+                      ullPeb64 + s_offProcessParametersInPeb64, dwErr, dwErr, cbRead);
+            return dwErr ? dwErr : -1;
+        }
+        if (uProcParamPtr < 0x1000)
+        {
+            _snprintf(pszErr, cbErr, "Bad PEB64!ProcessParameter value: %#llx", uProcParamPtr);
+            return ERROR_INVALID_ADDRESS;
+        }
+    }
+
+    /*
+     * If we're replacing standard input and standard error but not standard
+     * output, we must read the standard output handle.  We ASSUME that in
+     * WOW64 processes the two PEBs have the same value, saving a read.
+     */
+    if (iFirstToInject == 0 && cHandlesToInject == 3 && !pafReplace[1])
+    {
+        if (ullProcParams64)
+        {
+            SIZE_T cbRead = 0;
+            if (   MyReadProcessMemory(hProcess, ullProcParams64 + s_offStandardInputInProcParams64 + sizeof(au64Handles[0]),
+                                       &au64Handles[1], sizeof(au64Handles[1]), &cbRead)
+                && cbRead == sizeof(au64Handles[1]))
+                au32Handles[1] = (DWORD)au64Handles[1];
+            else
+            {
+                DWORD dwErr = GetLastError();
+                _snprintf(pszErr, cbErr, "Failed to read ProcessParameter64!StandardOutput at %#llx: %u/%#x (%u read)",
+                          ullProcParams64 + s_offStandardInputInProcParams64 + sizeof(au64Handles[0]), dwErr, dwErr, cbRead);
+                return dwErr ? dwErr : -1;
+            }
+        }
+        else if (ullProcParams32)
+        {
+            SIZE_T cbRead = 0;
+            if (   !MyReadProcessMemory(hProcess, ullProcParams32 + s_offStandardInputInProcParams32 + sizeof(au32Handles[0]),
+                                        &au32Handles[1], sizeof(au32Handles[1]), &cbRead)
+                || cbRead != sizeof(au32Handles[1]))
+            {
+                DWORD dwErr = GetLastError();
+                _snprintf(pszErr, cbErr, "Failed to read ProcessParameter32!StandardOutput at %#llx: %u/%#x (%u read)",
+                          ullProcParams32 + s_offStandardInputInProcParams32 + sizeof(au32Handles[0]), dwErr, dwErr, cbRead);
+                return dwErr ? dwErr : -1;
+            }
+        }
+    }
+
+    /*
+     * Duplicate the handles into process, preparing the two handle arrays
+     * that we'll write to the guest afterwards.
+     */
+    for (i = iFirstToInject; i < 3; i++)
+        if (pafReplace[i])
+        {
+            HANDLE hInChild = pahHandles[i];
+            if (   hInChild == NULL
+                || hInChild == INVALID_HANDLE_VALUE
+                || DuplicateHandle(GetCurrentProcess(), pahHandles[i], hProcess, &hInChild,
+                                   0 /*fDesiredAccess*/, TRUE /*fInheritable*/, DUPLICATE_SAME_ACCESS))
+            {
+                au32Handles[i] = (DWORD)(uintptr_t)hInChild;
+                au64Handles[i] = (uintptr_t)hInChild;
+            }
+            else
+            {
+                DWORD dwErr = GetLastError();
+                _snprintf(pszErr, cbErr, "Failed to duplicate handle %p into the child as %s: %u",
+                          pahHandles[i], s_apszNames[i], dwErr);
+                return dwErr ? dwErr : -1;
+            }
+        }
+
+    /*
+     * Write the handle arrays to the child.
+     *
+     * If we're a WOW64 we need to use NtWow64WriteVirtualMemory64 instead of
+     * WriteProcessMemory because the latter fails with ERROR_NOACCESS (998).
+     * So, we use a wrapper for doing the writing.
+     */
+    if (ullProcParams32)
+    {
+        ULONGLONG   ullDst   = ullProcParams32 + s_offStandardInputInProcParams32 + iFirstToInject * sizeof(au32Handles[0]);
+        SIZE_T      cbToWrite = cHandlesToInject * sizeof(au32Handles[0]);
+        SIZE_T      cbWritten = 0;
+        if (   !MyWriteProcessMemory(hProcess, ullDst, &au32Handles[iFirstToInject], cbToWrite, &cbWritten)
+            || cbWritten != cbToWrite)
+        {
+            DWORD dwErr = GetLastError();
+            _snprintf(pszErr, cbErr, "Failed to write handles to ProcessParameter32 (%#llx LB %u): %u/%#x (%u written)",
+                      ullDst, cbToWrite, dwErr, dwErr, cbWritten);
+            return dwErr ? dwErr : ERROR_MORE_DATA;
+        }
+    }
+
+    if (ullProcParams64)
+    {
+        ULONGLONG   ullDst    = ullProcParams64 + s_offStandardInputInProcParams64 + iFirstToInject * sizeof(au64Handles[0]);
+        SIZE_T      cbToWrite = cHandlesToInject * sizeof(au64Handles[0]);
+        SIZE_T      cbWritten = 0;
+        if (   !MyWriteProcessMemory(hProcess, ullDst, &au64Handles[iFirstToInject], cbToWrite, &cbWritten)
+            || cbWritten != cbToWrite)
+        {
+            DWORD dwErr = GetLastError();
+            _snprintf(pszErr, cbErr, "Failed to write handles to ProcessParameter64 (%#llx LB %u): %u/%#x (%u written)",
+                      ullDst, cbToWrite, dwErr, dwErr, cbWritten);
+            return dwErr ? dwErr : ERROR_MORE_DATA;
+        }
+    }
+
+    /* Done successfully! */
+    return 0;
+}
+
diff --git a/src/lib/nt/nt_child_inject_standard_handles.h b/src/lib/nt/nt_child_inject_standard_handles.h
new file mode 100644
index 0000000..851706b
--- /dev/null
+++ b/src/lib/nt/nt_child_inject_standard_handles.h
@@ -0,0 +1,32 @@
+/* $Id: nt_child_inject_standard_handles.h 3179 2018-03-22 19:50:04Z bird $ */
+/** @file
+ * Injecting standard handles into a child process.
+ */
+
+/*
+ * Copyright (c) 2004-2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef ___nt_child_inject_standard_handles
+#define ___nt_child_inject_standard_handles
+
+int nt_child_inject_standard_handles(HANDLE hProcess, BOOL pafReplace[3], HANDLE pahHandles[3], char *pszErr, size_t cbErr);
+
+#endif
+
diff --git a/src/lib/nt/ntdir.c b/src/lib/nt/ntdir.c
new file mode 100644
index 0000000..61a58e3
--- /dev/null
+++ b/src/lib/nt/ntdir.c
@@ -0,0 +1,673 @@
+/* $Id: ntdir.c 3007 2016-11-06 16:46:43Z bird $ */
+/** @file
+ * MSC + NT opendir, readdir, telldir, seekdir, and closedir.
+ */
+
+/*
+ * Copyright (c) 2005-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <stdio.h>
+#include <errno.h>
+#include <malloc.h>
+#include <assert.h>
+
+#include "ntstuff.h"
+#include "nthlp.h"
+#include "ntdir.h"
+
+
+/**
+ * Implements opendir.
+ */
+BirdDir_T *birdDirOpen(const char *pszPath)
+{
+    HANDLE hDir = birdOpenFile(pszPath,
+                               FILE_READ_DATA | SYNCHRONIZE,
+                               FILE_ATTRIBUTE_NORMAL,
+                               FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                               FILE_OPEN,
+                               FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+                               OBJ_CASE_INSENSITIVE);
+    if (hDir != INVALID_HANDLE_VALUE)
+    {
+        BirdDir_T *pDir = birdDirOpenFromHandle((void *)hDir, NULL, BIRDDIR_F_CLOSE_HANDLE);
+        if (pDir)
+            return pDir;
+        birdCloseFile(hDir);
+    }
+    return NULL;
+}
+
+
+/**
+ * Alternative opendir, with extra stat() info returned by readdir().
+ */
+BirdDir_T *birdDirOpenExtraInfo(const char *pszPath)
+{
+    HANDLE hDir = birdOpenFile(pszPath,
+                               FILE_READ_DATA | SYNCHRONIZE,
+                               FILE_ATTRIBUTE_NORMAL,
+                               FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                               FILE_OPEN,
+                               FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+                               OBJ_CASE_INSENSITIVE);
+    if (hDir != INVALID_HANDLE_VALUE)
+    {
+        BirdDir_T *pDir = birdDirOpenFromHandle((void *)hDir, NULL, BIRDDIR_F_CLOSE_HANDLE | BIRDDIR_F_EXTRA_INFO);
+        if (pDir)
+            return pDir;
+        birdCloseFile(hDir);
+    }
+    return NULL;
+}
+
+
+BirdDir_T *birdDirOpenExW(void *hRoot, const wchar_t *pwszPath, const wchar_t *pwszFilter, unsigned fFlags)
+{
+    HANDLE hDir = birdOpenFileExW((HANDLE)hRoot,
+                                  pwszPath,
+                                  FILE_READ_DATA | SYNCHRONIZE,
+                                  FILE_ATTRIBUTE_NORMAL,
+                                  FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                  FILE_OPEN,
+                                  FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+                                  OBJ_CASE_INSENSITIVE);
+    if (hDir != INVALID_HANDLE_VALUE)
+    {
+        BirdDir_T *pDir = birdDirOpenFromHandle((void *)hDir, pwszFilter, fFlags | BIRDDIR_F_CLOSE_HANDLE);
+        if (pDir)
+            return pDir;
+        birdCloseFile(hDir);
+    }
+    return NULL;
+}
+
+
+/**
+ * Internal worker for birdStatModTimeOnly.
+ */
+BirdDir_T *birdDirOpenFromHandle(void *pvHandle, const void *pvReserved, unsigned fFlags)
+{
+    if (!pvReserved && !(fFlags & BIRDDIR_F_STATIC_ALLOC))
+    {
+        /*
+         * Allocate and initialize the directory enum handle.
+         */
+        BirdDir_T *pDir = (BirdDir_T *)birdMemAlloc(sizeof(*pDir));
+        if (pDir)
+        {
+            pDir->uMagic        = BIRD_DIR_MAGIC;
+            pDir->fFlags        = fFlags;
+            pDir->pvHandle      = pvHandle;
+            pDir->uDev          = 0;
+            pDir->offPos        = 0;
+            pDir->fHaveData     = 0;
+            pDir->fFirst        = 1;
+            pDir->iInfoClass    = fFlags & BIRDDIR_F_EXTRA_INFO ? MyFileIdFullDirectoryInformation : MyFileNamesInformation;
+            pDir->offBuf        = 0;
+            pDir->cbBuf         = 0;
+            pDir->pabBuf        = NULL;
+            return pDir;
+        }
+    }
+    else
+    {
+        assert(!(fFlags & BIRDDIR_F_STATIC_ALLOC));
+        assert(pvReserved == NULL);
+    }
+    birdSetErrnoToInvalidArg();
+    return NULL;
+}
+
+
+/**
+ * Special API that takes a preallocated BirdDir_T and can be called again
+ * without involving birdDirClose.
+ *
+ *
+ */
+BirdDir_T *birdDirOpenFromHandleWithReuse(BirdDir_T *pDir, void *pvHandle, const void *pvReserved, unsigned fFlags)
+{
+    if (!pvReserved)
+    {
+        /*
+         * Allocate and initialize the directory enum handle.
+         */
+        if (pDir)
+        {
+            if (pDir->uMagic == BIRD_DIR_MAGIC)
+            {
+                if (   (pDir->fFlags & BIRDDIR_F_CLOSE_HANDLE)
+                    && pDir->pvHandle != INVALID_HANDLE_VALUE)
+                    birdCloseFile((HANDLE)pDir->pvHandle);
+            }
+            else
+            {
+                pDir->cbBuf     = 0;
+                pDir->pabBuf    = NULL;
+                pDir->uMagic    = BIRD_DIR_MAGIC;
+            }
+            pDir->pvHandle      = pvHandle;
+            pDir->fFlags        = fFlags;
+            pDir->uDev          = 0;
+            pDir->offPos        = 0;
+            pDir->fHaveData     = 0;
+            pDir->fFirst        = 1;
+            pDir->iInfoClass    = fFlags & BIRDDIR_F_EXTRA_INFO ? MyFileIdFullDirectoryInformation : MyFileNamesInformation;
+            pDir->offBuf        = 0;
+            return pDir;
+        }
+    }
+    else
+        assert(pvReserved == NULL);
+    birdSetErrnoToInvalidArg();
+    return NULL;
+}
+
+
+static int birdDirReadMore(BirdDir_T *pDir)
+{
+    MY_NTSTATUS         rcNt;
+    MY_IO_STATUS_BLOCK  Ios;
+    int                 fFirst;
+
+    /*
+     * Retrieve the volume serial number + creation time and create the
+     * device number the first time around.  Also allocate a buffer.
+     */
+    fFirst = pDir->fFirst;
+    if (fFirst)
+    {
+        union
+        {
+            MY_FILE_FS_VOLUME_INFORMATION VolInfo;
+            unsigned char abBuf[1024];
+        } uBuf;
+
+        Ios.Information = 0;
+        Ios.u.Status    = -1;
+        rcNt = g_pfnNtQueryVolumeInformationFile((HANDLE)pDir->pvHandle, &Ios, &uBuf, sizeof(uBuf), MyFileFsVolumeInformation);
+        if (MY_NT_SUCCESS(rcNt))
+            rcNt = Ios.u.Status;
+        if (MY_NT_SUCCESS(rcNt))
+            pDir->uDev = uBuf.VolInfo.VolumeSerialNumber
+                       | (uBuf.VolInfo.VolumeCreationTime.QuadPart << 32);
+        else
+            pDir->uDev = 0;
+
+        if (!pDir->pabBuf)
+        {
+            /*
+             * Allocate a buffer.
+             *
+             * Better not exceed 64KB or CIFS may throw a fit.  Also, on win10/64
+             * here there is a noticable speedup when going one byte below 64KB.
+             */
+            pDir->cbBuf = 0xffe0;
+            pDir->pabBuf = birdMemAlloc(pDir->cbBuf);
+            if (!pDir->pabBuf)
+                return birdSetErrnoToNoMem();
+        }
+
+        pDir->fFirst = 0;
+    }
+
+    /*
+     * Read another buffer full.
+     */
+    Ios.Information = 0;
+    Ios.u.Status    = -1;
+
+    rcNt = g_pfnNtQueryDirectoryFile((HANDLE)pDir->pvHandle,
+                                     NULL,      /* hEvent */
+                                     NULL,      /* pfnApcComplete */
+                                     NULL,      /* pvApcCompleteCtx */
+                                     &Ios,
+                                     pDir->pabBuf,
+                                     pDir->cbBuf,
+                                     (MY_FILE_INFORMATION_CLASS)pDir->iInfoClass,
+                                     FALSE,     /* fReturnSingleEntry */
+                                     NULL,      /* Filter / restart pos. */
+                                     pDir->fFlags & BIRDDIR_F_RESTART_SCAN ? TRUE : FALSE); /* fRestartScan */
+    if (!MY_NT_SUCCESS(rcNt))
+    {
+        int rc;
+        if (rcNt == MY_STATUS_NO_MORE_FILES)
+            rc = 0;
+        else
+            rc = birdSetErrnoFromNt(rcNt);
+        pDir->fHaveData = 0;
+        pDir->offBuf    = pDir->cbBuf;
+        return rc;
+    }
+
+    pDir->offBuf    = 0;
+    pDir->fHaveData = 1;
+    pDir->fFlags    &= ~BIRDDIR_F_RESTART_SCAN;
+
+    return 0;
+}
+
+
+static int birdDirCopyNameToEntry(WCHAR const *pwcName, ULONG cbName, BirdDirEntry_T *pEntry)
+{
+    int cchOut = WideCharToMultiByte(CP_ACP, 0,
+                                     pwcName, cbName / sizeof(WCHAR),
+                                     pEntry->d_name, sizeof(pEntry->d_name) - 1,
+                                     NULL, NULL);
+    if (cchOut > 0)
+    {
+        pEntry->d_name[cchOut] = '\0';
+        pEntry->d_namlen = (unsigned __int16)cchOut;
+        pEntry->d_reclen = (unsigned __int16)((size_t)&pEntry->d_name[cchOut + 1] - (size_t)pEntry);
+        return 0;
+    }
+    return -1;
+}
+
+
+/**
+ * Deals with mount points.
+ *
+ * @param   pDir        The directory handle.
+ * @param   pInfo       The NT entry information.
+ * @param   pEntryStat  The stats for the mount point directory that needs
+ *                      updating (a d_stat member).
+ */
+static void birdDirUpdateMountPointInfo(BirdDir_T *pDir, MY_FILE_ID_FULL_DIR_INFORMATION *pInfo,
+                                        BirdStat_T *pEntryStat)
+{
+    /*
+     * Try open the root directory of the mount.
+     * (Can't use birdStatAtW here because the name isn't terminated.)
+     */
+    HANDLE              hRoot = INVALID_HANDLE_VALUE;
+    MY_NTSTATUS         rcNt;
+    MY_UNICODE_STRING   Name;
+    Name.Buffer = pInfo->FileName;
+    Name.Length = Name.MaximumLength = (USHORT)pInfo->FileNameLength;
+
+    rcNt = birdOpenFileUniStr((HANDLE)pDir->pvHandle, &Name,
+                              FILE_READ_ATTRIBUTES,
+                              FILE_ATTRIBUTE_NORMAL,
+                              FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                              FILE_OPEN,
+                              FILE_OPEN_FOR_BACKUP_INTENT,
+                              OBJ_CASE_INSENSITIVE,
+                              &hRoot);
+    if (MY_NT_SUCCESS(rcNt))
+    {
+        int         iSavedErrno = errno;
+        BirdStat_T  RootStat;
+        if (birdStatHandle(hRoot, &RootStat, NULL) == 0)
+        {
+            RootStat.st_ismountpoint = 2;
+            *pEntryStat = RootStat;
+        }
+        birdCloseFile(hRoot);
+        errno = iSavedErrno;
+    }
+    /* else: don't mind failures, we've got some info. */
+}
+
+
+/**
+ * Implements readdir_r().
+ *
+ * @remarks birdDirReadReentrantW is a copy of this.  Keep them in sync!
+ */
+int birdDirReadReentrant(BirdDir_T *pDir, BirdDirEntry_T *pEntry, BirdDirEntry_T **ppResult)
+{
+    int fSkipEntry;
+
+    *ppResult = NULL;
+
+    if (!pDir || pDir->uMagic != BIRD_DIR_MAGIC)
+        return birdSetErrnoToBadFileNo();
+
+    do
+    {
+        ULONG offNext;
+        ULONG cbMinCur;
+
+        /*
+         * Read more?
+         */
+        if (!pDir->fHaveData)
+        {
+            if (birdDirReadMore(pDir) != 0)
+                return -1;
+            if (!pDir->fHaveData)
+                return 0;
+        }
+
+        /*
+         * Convert the NT data to the unixy output structure.
+         */
+        fSkipEntry = 0;
+        switch (pDir->iInfoClass)
+        {
+            case MyFileNamesInformation:
+            {
+                MY_FILE_NAMES_INFORMATION *pInfo = (MY_FILE_NAMES_INFORMATION *)&pDir->pabBuf[pDir->offBuf];
+                if (   pDir->offBuf          >= pDir->cbBuf - MIN_SIZEOF_MY_FILE_NAMES_INFORMATION
+                    || pInfo->FileNameLength >= pDir->cbBuf
+                    || pDir->offBuf + pInfo->FileNameLength + MIN_SIZEOF_MY_FILE_NAMES_INFORMATION > pDir->cbBuf)
+                {
+                    fSkipEntry = 1;
+                    pDir->fHaveData = 0;
+                    continue;
+                }
+
+                memset(&pEntry->d_stat, 0, sizeof(pEntry->d_stat));
+                pEntry->d_stat.st_mode  = S_IFMT;
+                pEntry->d_type          = DT_UNKNOWN;
+                pEntry->d_reclen        = 0;
+                pEntry->d_namlen        = 0;
+                if (birdDirCopyNameToEntry(pInfo->FileName, pInfo->FileNameLength, pEntry) != 0)
+                    fSkipEntry = 1;
+
+                cbMinCur = MIN_SIZEOF_MY_FILE_NAMES_INFORMATION + pInfo->FileNameLength;
+                offNext  = pInfo->NextEntryOffset;
+                break;
+            }
+
+            case MyFileIdFullDirectoryInformation:
+            {
+                MY_FILE_ID_FULL_DIR_INFORMATION *pInfo = (MY_FILE_ID_FULL_DIR_INFORMATION *)&pDir->pabBuf[pDir->offBuf];
+                if (   pDir->offBuf          >= pDir->cbBuf - MIN_SIZEOF_MY_FILE_ID_FULL_DIR_INFORMATION
+                    || pInfo->FileNameLength >= pDir->cbBuf
+                    || pDir->offBuf + pInfo->FileNameLength + MIN_SIZEOF_MY_FILE_ID_FULL_DIR_INFORMATION > pDir->cbBuf)
+                {
+                    fSkipEntry = 1;
+                    pDir->fHaveData = 0;
+                    continue;
+                }
+
+                pEntry->d_type          = DT_UNKNOWN;
+                pEntry->d_reclen        = 0;
+                pEntry->d_namlen        = 0;
+                if (birdDirCopyNameToEntry(pInfo->FileName, pInfo->FileNameLength, pEntry) != 0)
+                    fSkipEntry = 1;
+                birdStatFillFromFileIdFullDirInfo(&pEntry->d_stat, pInfo);
+                pEntry->d_stat.st_dev   = pDir->uDev;
+                switch (pEntry->d_stat.st_mode & S_IFMT)
+                {
+                    case S_IFREG:       pEntry->d_type = DT_REG; break;
+                    case S_IFDIR:       pEntry->d_type = DT_DIR; break;
+                    case S_IFLNK:       pEntry->d_type = DT_LNK; break;
+                    case S_IFIFO:       pEntry->d_type = DT_FIFO; break;
+                    case S_IFCHR:       pEntry->d_type = DT_CHR; break;
+                    default:
+#ifndef NDEBUG
+                        __debugbreak();
+#endif
+                        pEntry->d_type = DT_UNKNOWN;
+                        break;
+                }
+
+                if (pEntry->d_stat.st_ismountpoint != 1)
+                { /* likely. */ }
+                else
+                    birdDirUpdateMountPointInfo(pDir, pInfo, &pEntry->d_stat);
+
+                cbMinCur = MIN_SIZEOF_MY_FILE_ID_FULL_DIR_INFORMATION + pInfo->FileNameLength;
+                offNext  = pInfo->NextEntryOffset;
+                break;
+            }
+
+            default:
+                return birdSetErrnoToBadFileNo();
+        }
+
+        /*
+         * Advance.
+         */
+        if (   offNext >= cbMinCur
+            && offNext < pDir->cbBuf)
+            pDir->offBuf += offNext;
+        else
+        {
+            pDir->fHaveData = 0;
+            pDir->offBuf    = pDir->cbBuf;
+        }
+        pDir->offPos++;
+    } while (fSkipEntry);
+
+
+    /*
+     * Successful return.
+     */
+    *ppResult = pEntry;
+    return 0;
+}
+
+
+/**
+ * Implements readdir().
+ */
+BirdDirEntry_T *birdDirRead(BirdDir_T *pDir)
+{
+    BirdDirEntry_T *pRet = NULL;
+    birdDirReadReentrant(pDir, &pDir->u.DirEntry, &pRet);
+    return pRet;
+}
+
+
+static int birdDirCopyNameToEntryW(WCHAR const *pwcName, ULONG cbName, BirdDirEntryW_T *pEntry)
+{
+    ULONG cwcName = cbName / sizeof(wchar_t);
+    if (cwcName < sizeof(pEntry->d_name))
+    {
+        memcpy(pEntry->d_name, pwcName, cbName);
+        pEntry->d_name[cwcName] = '\0';
+        pEntry->d_namlen = (unsigned __int16)cwcName;
+        pEntry->d_reclen = (unsigned __int16)((size_t)&pEntry->d_name[cwcName + 1] - (size_t)pEntry);
+        return 0;
+    }
+    return -1;
+}
+
+
+/**
+ * Implements readdir_r(), UTF-16 version.
+ *
+ * @remarks This is a copy of birdDirReadReentrant where only the name handling
+ *          and entry type differs.  Remember to keep them in sync!
+ */
+int birdDirReadReentrantW(BirdDir_T *pDir, BirdDirEntryW_T *pEntry, BirdDirEntryW_T **ppResult)
+{
+    int fSkipEntry;
+
+    *ppResult = NULL;
+
+    if (!pDir || pDir->uMagic != BIRD_DIR_MAGIC)
+        return birdSetErrnoToBadFileNo();
+
+    do
+    {
+        ULONG offNext;
+        ULONG cbMinCur;
+
+        /*
+         * Read more?
+         */
+        if (!pDir->fHaveData)
+        {
+            if (birdDirReadMore(pDir) != 0)
+                return -1;
+            if (!pDir->fHaveData)
+                return 0;
+        }
+
+        /*
+         * Convert the NT data to the unixy output structure.
+         */
+        fSkipEntry = 0;
+        switch (pDir->iInfoClass)
+        {
+            case MyFileNamesInformation:
+            {
+                MY_FILE_NAMES_INFORMATION *pInfo = (MY_FILE_NAMES_INFORMATION *)&pDir->pabBuf[pDir->offBuf];
+                if (   pDir->offBuf          >= pDir->cbBuf - MIN_SIZEOF_MY_FILE_NAMES_INFORMATION
+                    || pInfo->FileNameLength >= pDir->cbBuf
+                    || pDir->offBuf + pInfo->FileNameLength + MIN_SIZEOF_MY_FILE_NAMES_INFORMATION > pDir->cbBuf)
+                {
+                    fSkipEntry = 1;
+                    pDir->fHaveData = 0;
+                    continue;
+                }
+
+                memset(&pEntry->d_stat, 0, sizeof(pEntry->d_stat));
+                pEntry->d_stat.st_mode  = S_IFMT;
+                pEntry->d_type          = DT_UNKNOWN;
+                pEntry->d_reclen        = 0;
+                pEntry->d_namlen        = 0;
+                if (birdDirCopyNameToEntryW(pInfo->FileName, pInfo->FileNameLength, pEntry) != 0)
+                    fSkipEntry = 1;
+
+                cbMinCur = MIN_SIZEOF_MY_FILE_NAMES_INFORMATION + pInfo->FileNameLength;
+                offNext  = pInfo->NextEntryOffset;
+                break;
+            }
+
+            case MyFileIdFullDirectoryInformation:
+            {
+                MY_FILE_ID_FULL_DIR_INFORMATION *pInfo = (MY_FILE_ID_FULL_DIR_INFORMATION *)&pDir->pabBuf[pDir->offBuf];
+                if (   pDir->offBuf          >= pDir->cbBuf - MIN_SIZEOF_MY_FILE_ID_FULL_DIR_INFORMATION
+                    || pInfo->FileNameLength >= pDir->cbBuf
+                    || pDir->offBuf + pInfo->FileNameLength + MIN_SIZEOF_MY_FILE_ID_FULL_DIR_INFORMATION > pDir->cbBuf)
+                {
+                    fSkipEntry = 1;
+                    pDir->fHaveData = 0;
+                    continue;
+                }
+
+                pEntry->d_type          = DT_UNKNOWN;
+                pEntry->d_reclen        = 0;
+                pEntry->d_namlen        = 0;
+                if (birdDirCopyNameToEntryW(pInfo->FileName, pInfo->FileNameLength, pEntry) != 0)
+                    fSkipEntry = 1;
+                birdStatFillFromFileIdFullDirInfo(&pEntry->d_stat, pInfo);
+                pEntry->d_stat.st_dev   = pDir->uDev;
+                switch (pEntry->d_stat.st_mode & S_IFMT)
+                {
+                    case S_IFREG:       pEntry->d_type = DT_REG; break;
+                    case S_IFDIR:       pEntry->d_type = DT_DIR; break;
+                    case S_IFLNK:       pEntry->d_type = DT_LNK; break;
+                    case S_IFIFO:       pEntry->d_type = DT_FIFO; break;
+                    case S_IFCHR:       pEntry->d_type = DT_CHR; break;
+                    default:
+#ifndef NDEBUG
+                        __debugbreak();
+#endif
+                        pEntry->d_type = DT_UNKNOWN;
+                        break;
+                }
+
+                if (pEntry->d_stat.st_ismountpoint != 1)
+                { /* likely. */ }
+                else
+                    birdDirUpdateMountPointInfo(pDir, pInfo, &pEntry->d_stat);
+
+                cbMinCur = MIN_SIZEOF_MY_FILE_ID_FULL_DIR_INFORMATION + pInfo->FileNameLength;
+                offNext  = pInfo->NextEntryOffset;
+                break;
+            }
+
+            default:
+                return birdSetErrnoToBadFileNo();
+        }
+
+        /*
+         * Advance.
+         */
+        if (   offNext >= cbMinCur
+            && offNext < pDir->cbBuf)
+            pDir->offBuf += offNext;
+        else
+        {
+            pDir->fHaveData = 0;
+            pDir->offBuf    = pDir->cbBuf;
+        }
+        pDir->offPos++;
+    } while (fSkipEntry);
+
+
+    /*
+     * Successful return.
+     */
+    *ppResult = pEntry;
+    return 0;
+}
+
+/**
+ * Implements readdir().
+ */
+BirdDirEntryW_T *birdDirReadW(BirdDir_T *pDir)
+{
+    BirdDirEntryW_T *pRet = NULL;
+    birdDirReadReentrantW(pDir, &pDir->u.DirEntryW, &pRet);
+    return pRet;
+}
+
+
+/**
+ * Implements telldir().
+ */
+long birdDirTell(BirdDir_T *pDir)
+{
+    if (!pDir || pDir->uMagic != BIRD_DIR_MAGIC)
+        return birdSetErrnoToBadFileNo();
+    return pDir->offPos;
+}
+
+
+void birdDirSeek(BirdDir_T *pDir, long offDir);
+
+
+/**
+ * Implements closedir().
+ */
+int birdDirClose(BirdDir_T *pDir)
+{
+    if (!pDir || pDir->uMagic != BIRD_DIR_MAGIC)
+        return birdSetErrnoToBadFileNo();
+
+    pDir->uMagic++;
+    if (pDir->fFlags & BIRDDIR_F_CLOSE_HANDLE)
+        birdCloseFile((HANDLE)pDir->pvHandle);
+    pDir->pvHandle = (void *)INVALID_HANDLE_VALUE;
+    birdMemFree(pDir->pabBuf);
+    pDir->pabBuf = NULL;
+    if (!(pDir->fFlags & BIRDDIR_F_STATIC_ALLOC))
+        birdMemFree(pDir);
+
+    return 0;
+}
diff --git a/src/lib/nt/ntdir.h b/src/lib/nt/ntdir.h
new file mode 100644
index 0000000..c6d6c3c
--- /dev/null
+++ b/src/lib/nt/ntdir.h
@@ -0,0 +1,154 @@
+/* $Id: ntdir.h 3005 2016-11-06 00:07:37Z bird $ */
+/** @file
+ * MSC + NT opendir, readdir, closedir and friends.
+ */
+
+/*
+ * Copyright (c) 2005-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+#ifndef ___nt_ntdir_h
+#define ___nt_ntdir_h
+
+#include "nttypes.h"
+#include "ntstat.h"
+
+typedef struct dirent
+{
+    /** Optional stat information.
+     * Only provided if using birdDirOpenExtraInfo(). */
+    BirdStat_T          d_stat;
+    /** The record length. */
+    unsigned __int16    d_reclen;
+    /** The name length. */
+    unsigned __int16    d_namlen;
+    /** The name type. */
+    unsigned char       d_type;
+    /** The name. */
+    char                d_name[512 - sizeof(BirdStat_T) - 2 - 2 - 1];
+} BirdDirEntry_T;
+
+typedef struct direntw
+{
+    /** Optional stat information.
+     * Only provided if using birdDirOpenExtraInfo(). */
+    BirdStat_T          d_stat;
+    /** The record length. */
+    unsigned __int16    d_reclen;
+    /** The name length (in wchar_t). */
+    unsigned __int16    d_namlen;
+    /** The name type. */
+    unsigned char       d_type;
+    /** The name. */
+    wchar_t             d_name[512 - sizeof(BirdStat_T) - 2 - 2 - 1];
+} BirdDirEntryW_T;
+
+#define d_ino           d_stat.st_ino;
+
+/** @name d_type values.
+ * @{ */
+#define DT_UNKNOWN           0
+#define DT_FIFO              1
+#define DT_CHR               2
+#define DT_DIR               4
+#define DT_BLK               6
+#define DT_REG               8
+#define DT_LNK              10
+#define DT_SOCK             12
+#define DT_WHT              14
+/** @}  */
+
+/** @name BIRDDIR_F_XXX - birdDirOpenFromHandle & BirdDir_T::fFlags
+ * @{ */
+/** birdDirClose should also close pvHandle.  */
+#define BIRDDIR_F_CLOSE_HANDLE  1U
+/** birdDirClose should not close the handle.  */
+#define BIRDDIR_F_KEEP_HANDLE   0U
+/** Provide extra info (stat). */
+#define BIRDDIR_F_EXTRA_INFO    2U
+/** Whether to restart the scan. */
+#define BIRDDIR_F_RESTART_SCAN  4U
+/** Set if the BirdDir_T structure is statically allocated. */
+#define BIRDDIR_F_STATIC_ALLOC  8U
+/** @} */
+
+typedef struct BirdDir
+{
+    /** Magic value. */
+    unsigned            uMagic;
+    /** Flags. */
+    unsigned            fFlags;
+    /** The directory handle. */
+    void               *pvHandle;
+    /** The device number (st_dev). */
+    unsigned __int64    uDev;
+    /** The current position. */
+    long                offPos;
+
+    /** Set if we haven't yet read anything. */
+    int                 fFirst;
+    /** Set if we have data in the buffer. */
+    int                 fHaveData;
+    /** The info type we're querying. */
+    int                 iInfoClass;
+    /** The current buffer position. */
+    unsigned            offBuf;
+    /** The number of bytes allocated for pabBuf. */
+    unsigned            cbBuf;
+    /** Buffer of size cbBuf. */
+    unsigned char      *pabBuf;
+
+    /** Static directory entry. */
+    union
+    {
+        BirdDirEntry_T  DirEntry;
+        BirdDirEntryW_T DirEntryW;
+    } u;
+} BirdDir_T;
+/** Magic value for BirdDir. */
+#define BIRD_DIR_MAGIC      0x19731120
+
+
+BirdDir_T      *birdDirOpen(const char *pszPath);
+BirdDir_T      *birdDirOpenExtraInfo(const char *pszPath);
+BirdDir_T      *birdDirOpenExW(void *hRoot, const wchar_t *pwszPath, const wchar_t *pwszFilter, unsigned fFlags);
+BirdDir_T      *birdDirOpenFromHandle(void *hDir, const void *pvReserved, unsigned fFlags);
+BirdDir_T      *birdDirOpenFromHandleWithReuse(BirdDir_T *pDir, void *pvHandle, const void *pvReserved, unsigned fFlags);
+BirdDirEntry_T *birdDirRead(BirdDir_T *pDir);
+BirdDirEntryW_T *birdDirReadW(BirdDir_T *pDir);
+long            birdDirTell(BirdDir_T *pDir);
+void            birdDirSeek(BirdDir_T *pDir, long offDir);
+int             birdDirClose(BirdDir_T *pDir);
+
+#define opendir                     birdDirOpen
+#define readdir                     birdDirRead
+#define telldir                     birdDirTell
+#define seekdir                     birdDirSeek
+#define rewinddir(a_pDir, a_offDir) birdDirSeek(a_pDir, 0)
+#define closedir                    birdDirClose
+#define _D_NAMLEN(a_pEnt)           ((a_pEnt)->d_namlen)
+typedef BirdDir_T DIR;
+
+#endif
+
diff --git a/src/lib/nt/nthlp.h b/src/lib/nt/nthlp.h
new file mode 100644
index 0000000..a24792c
--- /dev/null
+++ b/src/lib/nt/nthlp.h
@@ -0,0 +1,119 @@
+/* $Id: nthlp.h 3337 2020-04-22 17:56:36Z bird $ */
+/** @file
+ * MSC + NT helper functions.
+ */
+
+/*
+ * Copyright (c) 2005-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+#ifndef ___nt_nthlp_h
+#define ___nt_nthlp_h
+
+#include "ntstuff.h"
+#include "nttypes.h"
+
+
+/** Lazy resolving of the NTDLL imports. */
+#define birdResolveImports() do { if (g_fResolvedNtImports) {} else birdResolveImportsWorker(); } while (0)
+void        birdResolveImportsWorker(void);
+extern int  g_fResolvedNtImports;
+
+void       *birdTmpAlloc(size_t cb);
+void        birdTmpFree(void *pv);
+
+void       *birdMemAlloc(size_t cb);
+void       *birdMemAllocZ(size_t cb);
+void        birdMemFree(void *pv);
+
+int         birdSetErrnoFromNt(MY_NTSTATUS rcNt);
+int         birdSetErrnoFromWin32(DWORD dwErr);
+int         birdSetErrnoToNoMem(void);
+int         birdSetErrnoToInvalidArg(void);
+int         birdSetErrnoToBadFileNo(void);
+
+HANDLE      birdOpenFile(const char *pszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                         ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs);
+HANDLE      birdOpenFileW(const wchar_t *pwszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                          ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs);
+HANDLE      birdOpenFileEx(HANDLE hRoot, const char *pszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                           ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs);
+HANDLE      birdOpenFileExW(HANDLE hRoot, const wchar_t *pwszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                            ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs);
+HANDLE      birdOpenParentDir(HANDLE hRoot, const char *pszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                              ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs,
+                              MY_UNICODE_STRING *pNameUniStr);
+HANDLE      birdOpenParentDirW(HANDLE hRoot, const wchar_t *pwszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                               ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs,
+                               MY_UNICODE_STRING *pNameUniStr);
+MY_NTSTATUS birdOpenFileUniStr(HANDLE hRoot, MY_UNICODE_STRING *pNtPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                               ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs,
+                               HANDLE *phFile);
+HANDLE      birdOpenCurrentDirectory(void);
+void        birdCloseFile(HANDLE hFile);
+
+int         birdIsPathDirSpec(const char *pszPath);
+int         birdDosToNtPath(const char *pszPath, MY_UNICODE_STRING *pNtPath);
+int         birdDosToNtPathW(const wchar_t *pwszPath, MY_UNICODE_STRING *pNtPath);
+int         birdDosToRelativeNtPath(const char *pszPath, MY_UNICODE_STRING *pNtPath);
+int         birdDosToRelativeNtPathW(const wchar_t *pszPath, MY_UNICODE_STRING *pNtPath);
+void        birdFreeNtPath(MY_UNICODE_STRING *pNtPath);
+
+
+static __inline void birdNtTimeToTimeSpec(__int64 iNtTime, BirdTimeSpec_T *pTimeSpec)
+{
+    iNtTime -= BIRD_NT_EPOCH_OFFSET_UNIX_100NS;
+    pTimeSpec->tv_sec  = iNtTime / 10000000;
+    pTimeSpec->tv_nsec = (iNtTime % 10000000) * 100;
+}
+
+
+static __inline __int64 birdNtTimeFromTimeSpec(BirdTimeSpec_T const *pTimeSpec)
+{
+    __int64 iNtTime = pTimeSpec->tv_sec * 10000000;
+    iNtTime += pTimeSpec->tv_nsec / 100;
+    iNtTime += BIRD_NT_EPOCH_OFFSET_UNIX_100NS;
+    return iNtTime;
+}
+
+
+static __inline void birdNtTimeToTimeVal(__int64 iNtTime, BirdTimeVal_T *pTimeVal)
+{
+    iNtTime -= BIRD_NT_EPOCH_OFFSET_UNIX_100NS;
+    pTimeVal->tv_sec  = iNtTime / 10000000;
+    pTimeVal->tv_usec = (iNtTime % 10000000) / 10;
+}
+
+
+static __inline __int64 birdNtTimeFromTimeVal(BirdTimeVal_T const *pTimeVal)
+{
+    __int64 iNtTime = pTimeVal->tv_sec * 10000000;
+    iNtTime += pTimeVal->tv_usec * 10;
+    iNtTime += BIRD_NT_EPOCH_OFFSET_UNIX_100NS;
+    return iNtTime;
+}
+
+
+#endif
+
diff --git a/src/lib/nt/nthlpcore.c b/src/lib/nt/nthlpcore.c
new file mode 100644
index 0000000..fe40c5e
--- /dev/null
+++ b/src/lib/nt/nthlpcore.c
@@ -0,0 +1,481 @@
+/* $Id: nthlpcore.c 3534 2021-12-20 23:31:55Z bird $ */
+/** @file
+ * MSC + NT core helpers functions and globals.
+ */
+
+/*
+ * Copyright (c) 2005-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <errno.h>
+#include "nthlp.h"
+#ifndef NDEBUG
+# include <stdio.h>
+#endif
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+MY_NTSTATUS (WINAPI *g_pfnNtClose)(HANDLE);
+MY_NTSTATUS (WINAPI *g_pfnNtCreateFile)(PHANDLE, MY_ACCESS_MASK, MY_OBJECT_ATTRIBUTES *, MY_IO_STATUS_BLOCK *,
+                                        PLARGE_INTEGER, ULONG, ULONG, ULONG, ULONG, PVOID, ULONG);
+MY_NTSTATUS (WINAPI *g_pfnNtDeleteFile)(MY_OBJECT_ATTRIBUTES *);
+MY_NTSTATUS (WINAPI *g_pfnNtDuplicateObject)(HANDLE hSrcProc, HANDLE hSrc, HANDLE hDstProc, HANDLE *phRet,
+                                             MY_ACCESS_MASK fDesiredAccess, ULONG fAttribs, ULONG fOptions);
+MY_NTSTATUS (WINAPI *g_pfnNtReadFile)(HANDLE hFile, HANDLE hEvent, MY_IO_APC_ROUTINE *pfnApc, PVOID pvApcCtx,
+                                      MY_IO_STATUS_BLOCK *, PVOID pvBuf, ULONG cbToRead, PLARGE_INTEGER poffFile,
+                                      PULONG puKey);
+MY_NTSTATUS (WINAPI *g_pfnNtQueryInformationFile)(HANDLE, MY_IO_STATUS_BLOCK *, PVOID, LONG, MY_FILE_INFORMATION_CLASS);
+MY_NTSTATUS (WINAPI *g_pfnNtQueryVolumeInformationFile)(HANDLE, MY_IO_STATUS_BLOCK *, PVOID, LONG, MY_FS_INFORMATION_CLASS);
+MY_NTSTATUS (WINAPI *g_pfnNtQueryDirectoryFile)(HANDLE, HANDLE, MY_IO_APC_ROUTINE *, PVOID, MY_IO_STATUS_BLOCK *,
+                                                PVOID, ULONG, MY_FILE_INFORMATION_CLASS, BOOLEAN,
+                                                MY_UNICODE_STRING *, BOOLEAN);
+MY_NTSTATUS (WINAPI *g_pfnNtQueryAttributesFile)(MY_OBJECT_ATTRIBUTES *, MY_FILE_BASIC_INFORMATION *);
+MY_NTSTATUS (WINAPI *g_pfnNtQueryFullAttributesFile)(MY_OBJECT_ATTRIBUTES *, MY_FILE_NETWORK_OPEN_INFORMATION *);
+MY_NTSTATUS (WINAPI *g_pfnNtSetInformationFile)(HANDLE, MY_IO_STATUS_BLOCK *, PVOID, LONG, MY_FILE_INFORMATION_CLASS);
+BOOLEAN     (WINAPI *g_pfnRtlDosPathNameToNtPathName_U)(PCWSTR, MY_UNICODE_STRING *, PCWSTR *, MY_RTL_RELATIVE_NAME_U *);
+MY_NTSTATUS (WINAPI *g_pfnRtlAnsiStringToUnicodeString)(MY_UNICODE_STRING *, MY_ANSI_STRING const *, BOOLEAN);
+MY_NTSTATUS (WINAPI *g_pfnRtlUnicodeStringToAnsiString)(MY_ANSI_STRING *, MY_UNICODE_STRING *, BOOLEAN);
+BOOLEAN     (WINAPI *g_pfnRtlEqualUnicodeString)(MY_UNICODE_STRING const *, MY_UNICODE_STRING const *, BOOLEAN);
+BOOLEAN     (WINAPI *g_pfnRtlEqualString)(MY_ANSI_STRING const *, MY_ANSI_STRING const *, BOOLEAN);
+UCHAR       (WINAPI *g_pfnRtlUpperChar)(UCHAR uch);
+ULONG       (WINAPI *g_pfnRtlNtStatusToDosError)(MY_NTSTATUS rcNt);
+VOID        (WINAPI *g_pfnRtlAcquirePebLock)(VOID);
+VOID        (WINAPI *g_pfnRtlReleasePebLock)(VOID);
+
+static struct
+{
+    FARPROC    *ppfn;
+    const char *pszName;
+} const g_apfnDynamicNtdll[] =
+{
+    { (FARPROC *)&g_pfnNtClose,                         "NtClose" },
+    { (FARPROC *)&g_pfnNtCreateFile,                    "NtCreateFile" },
+    { (FARPROC *)&g_pfnNtDeleteFile,                    "NtDeleteFile" },
+    { (FARPROC *)&g_pfnNtDuplicateObject,               "NtDuplicateObject" },
+    { (FARPROC *)&g_pfnNtReadFile,                      "NtReadFile" },
+    { (FARPROC *)&g_pfnNtQueryInformationFile,          "NtQueryInformationFile" },
+    { (FARPROC *)&g_pfnNtQueryVolumeInformationFile,    "NtQueryVolumeInformationFile" },
+    { (FARPROC *)&g_pfnNtQueryDirectoryFile,            "NtQueryDirectoryFile" },
+    { (FARPROC *)&g_pfnNtQueryAttributesFile,           "NtQueryAttributesFile" },
+    { (FARPROC *)&g_pfnNtQueryFullAttributesFile,       "NtQueryFullAttributesFile" },
+    { (FARPROC *)&g_pfnNtSetInformationFile,            "NtSetInformationFile" },
+    { (FARPROC *)&g_pfnRtlDosPathNameToNtPathName_U,    "RtlDosPathNameToNtPathName_U" },
+    { (FARPROC *)&g_pfnRtlAnsiStringToUnicodeString,    "RtlAnsiStringToUnicodeString" },
+    { (FARPROC *)&g_pfnRtlUnicodeStringToAnsiString,    "RtlUnicodeStringToAnsiString" },
+    { (FARPROC *)&g_pfnRtlEqualUnicodeString,           "RtlEqualUnicodeString" },
+    { (FARPROC *)&g_pfnRtlEqualString,                  "RtlEqualString" },
+    { (FARPROC *)&g_pfnRtlUpperChar,                    "RtlUpperChar" },
+    { (FARPROC *)&g_pfnRtlNtStatusToDosError,           "RtlNtStatusToDosError" },
+    { (FARPROC *)&g_pfnRtlAcquirePebLock,               "RtlAcquirePebLock" },
+    { (FARPROC *)&g_pfnRtlReleasePebLock,               "RtlReleasePebLock" },
+};
+/** Set to 1 if we've successfully resolved the imports, otherwise 0. */
+int g_fResolvedNtImports = 0;
+
+
+
+void birdResolveImportsWorker(void)
+{
+    HMODULE     hMod = LoadLibraryW(L"ntdll.dll");
+    int         i    = sizeof(g_apfnDynamicNtdll) / sizeof(g_apfnDynamicNtdll[0]);
+    while (i-- > 0)
+    {
+        const char *pszSym = g_apfnDynamicNtdll[i].pszName;
+        FARPROC     pfn;
+        *g_apfnDynamicNtdll[i].ppfn = pfn = GetProcAddress(hMod, pszSym);
+        if (!pfn)
+        {
+            /* Write short message and die. */
+            static const char   s_szMsg[] = "\r\nFatal error resolving NTDLL.DLL symbols!\r\nSymbol: ";
+            DWORD               cbWritten;
+            if (   !WriteFile(GetStdHandle(STD_ERROR_HANDLE), s_szMsg, sizeof(s_szMsg) - 1, &cbWritten, NULL)
+                || !WriteFile(GetStdHandle(STD_ERROR_HANDLE), pszSym, (DWORD)strlen(pszSym), &cbWritten, NULL)
+                || !WriteFile(GetStdHandle(STD_ERROR_HANDLE), "\r\n", sizeof("\r\n") - 1, &cbWritten, NULL)
+                )
+                *(void **)(size_t)i = NULL;
+            ExitProcess(127);
+        }
+    }
+
+    g_fResolvedNtImports = 1;
+}
+
+
+void *birdTmpAlloc(size_t cb)
+{
+    return malloc(cb);
+}
+
+
+void birdTmpFree(void *pv)
+{
+    if (pv)
+        free(pv);
+}
+
+
+void *birdMemAlloc(size_t cb)
+{
+    return malloc(cb);
+}
+
+
+void *birdMemAllocZ(size_t cb)
+{
+    return calloc(cb, 1);
+}
+
+
+void birdMemFree(void *pv)
+{
+    if (pv)
+        free(pv);
+}
+
+
+int birdErrnoFromNtStatus(MY_NTSTATUS rcNt)
+{
+    switch (rcNt)
+    {
+        /* EPERM            =  1 */
+        case STATUS_CANNOT_DELETE:
+            return EPERM;
+        /* ENOENT           =  2 */
+        case STATUS_NOT_FOUND:
+        case STATUS_OBJECT_NAME_NOT_FOUND:
+        case STATUS_OBJECT_PATH_NOT_FOUND:
+        case STATUS_OBJECT_NAME_INVALID:
+        case STATUS_INVALID_COMPUTER_NAME:
+        case STATUS_VARIABLE_NOT_FOUND:
+        case STATUS_MESSAGE_NOT_FOUND:
+        case STATUS_DLL_NOT_FOUND:
+        case STATUS_ORDINAL_NOT_FOUND:
+        case STATUS_ENTRYPOINT_NOT_FOUND:
+        case STATUS_PATH_NOT_COVERED:
+        case STATUS_BAD_NETWORK_PATH:
+        case STATUS_DFS_EXIT_PATH_FOUND:
+        case RPC_NT_OBJECT_NOT_FOUND:
+        case STATUS_DELETE_PENDING:
+            return ENOENT;
+        /* ESRCH            =  3 */
+        case STATUS_PROCESS_NOT_IN_JOB:
+            return ESRCH;
+        /* EINTR            =  4 */
+        case STATUS_ALERTED:
+        case STATUS_USER_APC:
+            return EINTR;
+        /* EIO              =  5 */
+        /* ENXIO            =  6 */
+        /* E2BIG            =  7 */
+        /* ENOEXEC          =  8 */
+        case STATUS_INVALID_IMAGE_FORMAT:
+        case STATUS_INVALID_IMAGE_NE_FORMAT:
+        case STATUS_INVALID_IMAGE_LE_FORMAT:
+        case STATUS_INVALID_IMAGE_NOT_MZ:
+        case STATUS_INVALID_IMAGE_PROTECT:
+        case STATUS_INVALID_IMAGE_WIN_16:
+        case STATUS_IMAGE_SUBSYSTEM_NOT_PRESENT:
+        case STATUS_IMAGE_CHECKSUM_MISMATCH:
+        case STATUS_IMAGE_MP_UP_MISMATCH:
+        case STATUS_IMAGE_MACHINE_TYPE_MISMATCH:
+        case STATUS_IMAGE_MACHINE_TYPE_MISMATCH_EXE:
+        case STATUS_SYSTEM_IMAGE_BAD_SIGNATURE:
+        case STATUS_SECTION_NOT_IMAGE:
+        case STATUS_INVALID_IMAGE_WIN_32:
+        case STATUS_INVALID_IMAGE_WIN_64:
+        case STATUS_INVALID_IMAGE_HASH:
+        case STATUS_IMAGE_CERT_REVOKED:
+            return ENOEXEC;
+        /* EBADF            =  9 */
+        case STATUS_INVALID_HANDLE:
+        case STATUS_PORT_CLOSED:
+        case STATUS_OPLOCK_HANDLE_CLOSED:
+        case STATUS_HANDLES_CLOSED:
+        case STATUS_FILE_FORCED_CLOSED:
+            return EBADF;
+        /* ECHILD           = 10 */
+        /* EAGAIN           = 11 */
+        case STATUS_WMI_TRY_AGAIN:
+        case STATUS_GRAPHICS_TRY_AGAIN_LATER:
+        case STATUS_GRAPHICS_TRY_AGAIN_NOW:
+            return EAGAIN;
+        /* ENOMEM           = 12 */
+        case STATUS_NO_MEMORY:
+        case STATUS_HV_INSUFFICIENT_MEMORY:
+        case STATUS_INSUFFICIENT_RESOURCES:
+        case STATUS_REMOTE_RESOURCES:
+        case STATUS_INSUFF_SERVER_RESOURCES:
+            return ENOMEM;
+        /* EACCES           = 13 */
+        case STATUS_ACCESS_DENIED:
+        case STATUS_NETWORK_ACCESS_DENIED:
+        case RPC_NT_PROXY_ACCESS_DENIED:
+        case STATUS_CTX_SHADOW_DENIED:
+        case STATUS_CTX_WINSTATION_ACCESS_DENIED:
+            return EACCES;
+        /* EFAULT           = 14 */
+        case STATUS_ACCESS_VIOLATION:
+        case STATUS_HARDWARE_MEMORY_ERROR:
+            return EFAULT;
+        /* EBUSY            = 16 */
+        case STATUS_PIPE_BUSY:
+        case STATUS_RESOURCE_IN_USE:
+            return EBUSY;
+        /* EEXIST           = 17 */
+        case STATUS_OBJECT_NAME_EXISTS:
+        case STATUS_OBJECT_NAME_COLLISION:
+        case STATUS_DUPLICATE_NAME:
+            return EEXIST;
+        /* EXDEV            = 18 */
+        case STATUS_NOT_SAME_DEVICE:
+            return EXDEV;
+        /* ENODEV           = 19 */
+        /* ENOTDIR          = 20 */
+        case STATUS_NOT_A_DIRECTORY:
+        case STATUS_DIRECTORY_IS_A_REPARSE_POINT:
+        case STATUS_OBJECT_PATH_SYNTAX_BAD:
+        case STATUS_OBJECT_PATH_INVALID:
+        case STATUS_OBJECT_TYPE_MISMATCH:
+            return ENOTDIR;
+        /* EISDIR           = 21 */
+        case STATUS_FILE_IS_A_DIRECTORY:
+            return EISDIR;
+        /* EINVAL           = 22 */
+        case STATUS_INVALID_PARAMETER:
+        case STATUS_INVALID_PARAMETER_1:
+        case STATUS_INVALID_PARAMETER_2:
+        case STATUS_INVALID_PARAMETER_3:
+        case STATUS_INVALID_PARAMETER_4:
+        case STATUS_INVALID_PARAMETER_5:
+        case STATUS_INVALID_PARAMETER_6:
+        case STATUS_INVALID_PARAMETER_7:
+        case STATUS_INVALID_PARAMETER_8:
+        case STATUS_INVALID_PARAMETER_9:
+        case STATUS_INVALID_PARAMETER_10:
+        case STATUS_INVALID_PARAMETER_11:
+        case STATUS_INVALID_PARAMETER_12:
+        case STATUS_INVALID_PARAMETER_MIX:
+            return EINVAL;
+        /* ENFILE           = 23 */
+        /* EMFILE           = 24 */
+        case STATUS_TOO_MANY_OPENED_FILES:
+            return EMFILE;
+        /* ENOTTY           = 25 */
+        /* EFBIG            = 27 */
+        /* ENOSPC           = 28 */
+        case STATUS_DISK_FULL:
+            return ENOSPC;
+        /* ESPIPE           = 29 */
+        /* EROFS            = 30 */
+        /* EMLINK           = 31 */
+        /* EPIPE            = 32 */
+        case STATUS_PIPE_BROKEN:
+        case RPC_NT_PIPE_CLOSED:
+            return EPIPE;
+        /* EDOM             = 33 */
+        /* ERANGE           = 34 */
+        /* EDEADLK          = 36 */
+        case STATUS_POSSIBLE_DEADLOCK:
+            return EDEADLK;
+        /* ENAMETOOLONG     = 38 */
+        case STATUS_NAME_TOO_LONG:
+            return ENAMETOOLONG;
+        /* ENOLCK           = 39 */
+        /* ENOSYS           = 40 */
+        case STATUS_NOT_SUPPORTED:
+            return ENOSYS;
+        /* ENOTEMPTY        = 41 */
+        case STATUS_DIRECTORY_NOT_EMPTY:
+            return ENOTEMPTY;
+        /* EILSEQ           = 42 */
+        /* EADDRINUSE       = 100 */
+        /* EADDRNOTAVAIL    = 101 */
+        /* EAFNOSUPPORT     = 102 */
+        /* EALREADY         = 103 */
+        case STATUS_INTERRUPT_VECTOR_ALREADY_CONNECTED:
+        case STATUS_DEVICE_ALREADY_ATTACHED:
+        case STATUS_PORT_ALREADY_SET:
+        case STATUS_IMAGE_ALREADY_LOADED:
+        case STATUS_TOKEN_ALREADY_IN_USE:
+        case STATUS_IMAGE_ALREADY_LOADED_AS_DLL:
+        case STATUS_ADDRESS_ALREADY_EXISTS:
+        case STATUS_ADDRESS_ALREADY_ASSOCIATED:
+            return EALREADY;
+        /* EBADMSG          = 104 */
+        /* ECANCELED        = 105 */
+        /* ECONNABORTED     = 106 */
+        /* ECONNREFUSED     = 107 */
+        /* ECONNRESET       = 108 */
+        /* EDESTADDRREQ     = 109 */
+        /* EHOSTUNREACH     = 110 */
+        case STATUS_HOST_UNREACHABLE:
+            return EHOSTUNREACH;
+        /* EIDRM            = 111 */
+        /* EINPROGRESS      = 112 */
+        /* EISCONN          = 113 */
+        /* ELOOP            = 114 */
+        /* EMSGSIZE         = 115 */
+        /* ENETDOWN         = 116 */
+        /* ENETRESET        = 117 */
+        /* ENETUNREACH      = 118 */
+        case STATUS_NETWORK_UNREACHABLE:
+            return ENETUNREACH;
+        /* ENOBUFS          = 119 */
+        /* ENODATA          = 120 */
+        /* ENOLINK          = 121 */
+        /* ENOMSG           = 122 */
+        /* ENOPROTOOPT      = 123 */
+        /* ENOSR            = 124 */
+        /* ENOSTR           = 125 */
+        /* ENOTCONN         = 126 */
+        /* ENOTRECOVERABLE  = 127 */
+        /* ENOTSOCK         = 128 */
+        /* ENOTSUP          = 129 */
+        /* EOPNOTSUPP       = 130 */
+        /* EOTHER           = 131 */
+        /* EOVERFLOW        = 132 */
+        /* EOWNERDEAD       = 133 */
+        /* EPROTO           = 134 */
+        /* EPROTONOSUPPORT  = 135 */
+        /* EPROTOTYPE       = 136 */
+        /* ETIME            = 137 */
+        /* ETIMEDOUT        = 138 */
+        case STATUS_VIRTUAL_CIRCUIT_CLOSED:
+        case STATUS_TIMEOUT:
+            return ETIMEDOUT;
+
+        /* ETXTBSY          = 139 */
+        case STATUS_SHARING_VIOLATION:
+            return ETXTBSY;
+        /* EWOULDBLOCK      = 140 */
+    }
+
+#ifndef NDEBUG
+    __debugbreak();
+    fprintf(stderr, "rcNt=%#x (%d)\n", rcNt, rcNt);
+#endif
+    return EINVAL;
+}
+
+
+int birdSetErrnoFromNt(MY_NTSTATUS rcNt)
+{
+    errno = birdErrnoFromNtStatus(rcNt);
+#if 0
+    {
+        ULONG rcWin32;
+        _doserrno = rcWin32 = g_pfnRtlNtStatusToDosError(rcNt);
+        SetLastError(rcWin32);
+    }
+#endif
+    return -1;
+}
+
+
+int birdSetErrnoFromWin32(DWORD dwErr)
+{
+    switch (dwErr)
+    {
+        default:
+        case ERROR_INVALID_FUNCTION:        errno = EINVAL; break;
+        case ERROR_FILE_NOT_FOUND:          errno = ENOENT; break;
+        case ERROR_PATH_NOT_FOUND:          errno = ENOENT; break;
+        case ERROR_TOO_MANY_OPEN_FILES:     errno = EMFILE; break;
+        case ERROR_ACCESS_DENIED:           errno = EACCES; break;
+        case ERROR_INVALID_HANDLE:          errno = EBADF; break;
+        case ERROR_ARENA_TRASHED:           errno = ENOMEM; break;
+        case ERROR_NOT_ENOUGH_MEMORY:       errno = ENOMEM; break;
+        case ERROR_INVALID_BLOCK:           errno = ENOMEM; break;
+        case ERROR_BAD_ENVIRONMENT:         errno = E2BIG; break;
+        case ERROR_BAD_FORMAT:              errno = ENOEXEC; break;
+        case ERROR_INVALID_ACCESS:          errno = EINVAL; break;
+        case ERROR_INVALID_DATA:            errno = EINVAL; break;
+        case ERROR_INVALID_DRIVE:           errno = ENOENT; break;
+        case ERROR_CURRENT_DIRECTORY:       errno = EACCES; break;
+        case ERROR_NOT_SAME_DEVICE:         errno = EXDEV; break;
+        case ERROR_NO_MORE_FILES:           errno = ENOENT; break;
+        case ERROR_LOCK_VIOLATION:          errno = EACCES; break;
+        case ERROR_BAD_NETPATH:             errno = ENOENT; break;
+        case ERROR_NETWORK_ACCESS_DENIED:   errno = EACCES; break;
+        case ERROR_BAD_NET_NAME:            errno = ENOENT; break;
+        case ERROR_FILE_EXISTS:             errno = EEXIST; break;
+        case ERROR_CANNOT_MAKE:             errno = EACCES; break;
+        case ERROR_FAIL_I24:                errno = EACCES; break;
+        case ERROR_INVALID_PARAMETER:       errno = EINVAL; break;
+        case ERROR_NO_PROC_SLOTS:           errno = EAGAIN; break;
+        case ERROR_DRIVE_LOCKED:            errno = EACCES; break;
+        case ERROR_BROKEN_PIPE:             errno = EPIPE; break;
+        case ERROR_DISK_FULL:               errno = ENOSPC; break;
+        case ERROR_INVALID_TARGET_HANDLE:   errno = EBADF; break;
+        case ERROR_WAIT_NO_CHILDREN:        errno = ECHILD; break;
+        case ERROR_CHILD_NOT_COMPLETE:      errno = ECHILD; break;
+        case ERROR_DIRECT_ACCESS_HANDLE:    errno = EBADF; break;
+        case ERROR_NEGATIVE_SEEK:           errno = EINVAL; break;
+        case ERROR_SEEK_ON_DEVICE:          errno = EACCES; break;
+        case ERROR_DIR_NOT_EMPTY:           errno = ENOTEMPTY; break;
+        case ERROR_NOT_LOCKED:              errno = EACCES; break;
+        case ERROR_BAD_PATHNAME:            errno = ENOENT; break;
+        case ERROR_MAX_THRDS_REACHED:       errno = EAGAIN; break;
+        case ERROR_LOCK_FAILED:             errno = EACCES; break;
+        case ERROR_ALREADY_EXISTS:          errno = EEXIST; break;
+        case ERROR_FILENAME_EXCED_RANGE:    errno = ENOENT; break;
+        case ERROR_NESTING_NOT_ALLOWED:     errno = EAGAIN; break;
+#ifdef EMLINK
+        case ERROR_TOO_MANY_LINKS:          errno = EMLINK; break;
+#endif
+
+        case ERROR_SHARING_VIOLATION:
+            errno = ETXTBSY;
+            break;
+    }
+
+    return -1;
+}
+
+
+int birdSetErrnoToNoMem(void)
+{
+    errno = ENOMEM;
+    return -1;
+}
+
+
+int birdSetErrnoToInvalidArg(void)
+{
+    errno = EINVAL;
+    return -1;
+}
+
+
+int birdSetErrnoToBadFileNo(void)
+{
+    errno = EBADF;
+    return -1;
+}
+
diff --git a/src/lib/nt/nthlpfs.c b/src/lib/nt/nthlpfs.c
new file mode 100644
index 0000000..a85c517
--- /dev/null
+++ b/src/lib/nt/nthlpfs.c
@@ -0,0 +1,636 @@
+/* $Id: nthlpfs.c 3223 2018-03-31 02:29:56Z bird $ */
+/** @file
+ * MSC + NT helpers for file system related functions.
+ */
+
+/*
+ * Copyright (c) 2005-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "nthlp.h"
+#include <stddef.h>
+#include <string.h>
+#include <wchar.h>
+#include <errno.h>
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+static int g_fHaveOpenReparsePoint = -1;
+
+
+
+static int birdHasTrailingSlash(const char *pszPath)
+{
+    char ch, ch2;
+
+    /* Skip leading slashes. */
+    while ((ch = *pszPath) == '/' || ch == '\\')
+        pszPath++;
+    if (ch == '\0')
+        return 0;
+
+    /* Find the last char. */
+    while ((ch2 = *++pszPath) != '\0')
+        ch = ch2;
+
+    return ch == '/' || ch == '\\' || ch == ':';
+}
+
+
+static int birdHasTrailingSlashW(const wchar_t *pwszPath)
+{
+    wchar_t wc, wc2;
+
+    /* Skip leading slashes. */
+    while ((wc = *pwszPath) == '/' || wc == '\\')
+        pwszPath++;
+    if (wc == '\0')
+        return 0;
+
+    /* Find the last char. */
+    while ((wc2 = *++pwszPath) != '\0')
+        wc = wc2;
+
+    return wc == '/' || wc == '\\' || wc == ':';
+}
+
+
+int birdIsPathDirSpec(const char *pszPath)
+{
+    char ch, ch2;
+
+    /* Check for empty string. */
+    ch = *pszPath;
+    if (ch == '\0')
+        return 0;
+
+    /* Find the last char. */
+    while ((ch2 = *++pszPath) != '\0')
+        ch = ch2;
+
+    return ch == '/' || ch == '\\' || ch == ':';
+}
+
+
+static int birdIsPathDirSpecW(const wchar_t *pwszPath)
+{
+    wchar_t wc, wc2;
+
+    /* Check for empty string. */
+    wc = *pwszPath;
+    if (wc == '\0')
+        return 0;
+
+    /* Find the last char. */
+    while ((wc2 = *++pwszPath) != '\0')
+        wc = wc2;
+
+    return wc == '/' || wc == '\\' || wc == ':';
+}
+
+
+int birdDosToNtPath(const char *pszPath, MY_UNICODE_STRING *pNtPath)
+{
+    MY_NTSTATUS         rcNt;
+    WCHAR               wszTmp[4096];
+    MY_UNICODE_STRING   TmpUniStr;
+    MY_ANSI_STRING      Src;
+
+    birdResolveImports();
+
+    pNtPath->Length = pNtPath->MaximumLength = 0;
+    pNtPath->Buffer = NULL;
+
+    /*
+     * Convert the input to wide char.
+     */
+    Src.Buffer              = (PCHAR)pszPath;
+    Src.MaximumLength       = Src.Length = (USHORT)strlen(pszPath);
+
+    TmpUniStr.Length        = 0;
+    TmpUniStr.MaximumLength = sizeof(wszTmp) - sizeof(WCHAR);
+    TmpUniStr.Buffer        = wszTmp;
+
+    rcNt = g_pfnRtlAnsiStringToUnicodeString(&TmpUniStr, &Src, FALSE);
+    if (MY_NT_SUCCESS(rcNt))
+    {
+        if (TmpUniStr.Length > 0 && !(TmpUniStr.Length & 1))
+        {
+            wszTmp[TmpUniStr.Length / sizeof(WCHAR)] = '\0';
+
+            /*
+             * Convert the wide DOS path to an NT path.
+             */
+            if (g_pfnRtlDosPathNameToNtPathName_U(wszTmp, pNtPath, NULL, FALSE))
+                return 0;
+        }
+        rcNt = -1;
+    }
+    return birdSetErrnoFromNt(rcNt);
+}
+
+
+int birdDosToNtPathW(const wchar_t *pwszPath, MY_UNICODE_STRING *pNtPath)
+{
+    birdResolveImports();
+
+    pNtPath->Length = pNtPath->MaximumLength = 0;
+    pNtPath->Buffer = NULL;
+
+    /*
+     * Convert the wide DOS path to an NT path.
+     */
+    if (g_pfnRtlDosPathNameToNtPathName_U(pwszPath, pNtPath, NULL, FALSE))
+        return 0;
+    return birdSetErrnoFromNt(STATUS_NO_MEMORY);
+}
+
+
+/**
+ * Converts UNIX slashes to DOS ones.
+ *
+ * @returns 0
+ * @param   pNtPath     The relative NT path to fix up.
+ */
+static int birdFixRelativeNtPathSlashesAndReturn0(MY_UNICODE_STRING *pNtPath)
+{
+    size_t   cwcLeft  = pNtPath->Length / sizeof(wchar_t);
+    wchar_t *pwcStart = pNtPath->Buffer;
+    wchar_t *pwcHit;
+
+    /* Convert slashes. */
+    while ((pwcHit = wmemchr(pwcStart,  '/', cwcLeft)) != NULL)
+    {
+        *pwcHit = '\\';
+        cwcLeft -= pwcHit - pwcStart;
+        pwcHit = pwcStart;
+    }
+
+#if 0
+    /* Strip trailing slashes (NT doesn't like them). */
+    while (   pNtPath->Length >= sizeof(wchar_t)
+           && pNtPath->Buffer[(pNtPath->Length - sizeof(wchar_t)) / sizeof(wchar_t)] == '\\')
+    {
+        pNtPath->Length -= sizeof(wchar_t);
+        pNtPath->Buffer[pNtPath->Length / sizeof(wchar_t)] = '\0';
+    }
+
+    /* If it was all trailing slashes we convert it to a dot path. */
+    if (   pNtPath->Length == 0
+        && pNtPath->MaximumLength >= sizeof(wchar_t) * 2)
+    {
+        pNtPath->Length = sizeof(wchar_t);
+        pNtPath->Buffer[0] = '.';
+        pNtPath->Buffer[1] = '\0';
+    }
+#endif
+
+    return 0;
+}
+
+
+/**
+ * Similar to birdDosToNtPath, but it does call RtlDosPathNameToNtPathName_U.
+ *
+ * @returns 0 on success, -1 + errno on failure.
+ * @param   pszPath     The relative path.
+ * @param   pNtPath     Where to return the NT path.  Call birdFreeNtPath when done.
+ */
+int birdDosToRelativeNtPath(const char *pszPath, MY_UNICODE_STRING *pNtPath)
+{
+    MY_NTSTATUS         rcNt;
+    MY_ANSI_STRING      Src;
+
+    birdResolveImports();
+
+    /*
+     * Just convert to wide char.
+     */
+    pNtPath->Length   = pNtPath->MaximumLength = 0;
+    pNtPath->Buffer   = NULL;
+
+    Src.Buffer        = (PCHAR)pszPath;
+    Src.MaximumLength = Src.Length = (USHORT)strlen(pszPath);
+
+    rcNt = g_pfnRtlAnsiStringToUnicodeString(pNtPath, &Src, TRUE /* Allocate */);
+    if (MY_NT_SUCCESS(rcNt))
+        return birdFixRelativeNtPathSlashesAndReturn0(pNtPath);
+    return birdSetErrnoFromNt(rcNt);
+}
+
+
+/**
+ * Similar to birdDosToNtPathW, but it does call RtlDosPathNameToNtPathName_U.
+ *
+ * @returns 0 on success, -1 + errno on failure.
+ * @param   pwszPath    The relative path.
+ * @param   pNtPath     Where to return the NT path.  Call birdFreeNtPath when done.
+ */
+int birdDosToRelativeNtPathW(const wchar_t *pwszPath, MY_UNICODE_STRING *pNtPath)
+{
+    size_t cwcPath = wcslen(pwszPath);
+    if (cwcPath < 0xfffe)
+    {
+        pNtPath->Length = (USHORT)(cwcPath * sizeof(wchar_t));
+        pNtPath->MaximumLength = pNtPath->Length + sizeof(wchar_t);
+        pNtPath->Buffer = HeapAlloc(GetProcessHeap(), 0, pNtPath->MaximumLength);
+        if (pNtPath->Buffer)
+        {
+            memcpy(pNtPath->Buffer, pwszPath, pNtPath->MaximumLength);
+            return birdFixRelativeNtPathSlashesAndReturn0(pNtPath);
+        }
+        errno = ENOMEM;
+    }
+    else
+        errno = ENAMETOOLONG;
+    return -1;
+}
+
+
+/**
+ * Frees a string returned by birdDosToNtPath, birdDosToNtPathW or
+ * birdDosToRelativeNtPath.
+ *
+ * @param   pNtPath             The the NT path to free.
+ */
+void birdFreeNtPath(MY_UNICODE_STRING *pNtPath)
+{
+    HeapFree(GetProcessHeap(), 0, pNtPath->Buffer);
+    pNtPath->Buffer = NULL;
+    pNtPath->Length = 0;
+    pNtPath->MaximumLength = 0;
+}
+
+
+MY_NTSTATUS birdOpenFileUniStr(HANDLE hRoot, MY_UNICODE_STRING *pNtPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                               ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs,
+                               HANDLE *phFile)
+{
+    MY_IO_STATUS_BLOCK      Ios;
+    MY_OBJECT_ATTRIBUTES    ObjAttr;
+    MY_NTSTATUS             rcNt;
+
+    birdResolveImports();
+
+    if (  (fCreateOptions & FILE_OPEN_REPARSE_POINT)
+        && g_fHaveOpenReparsePoint == 0)
+        fCreateOptions &= ~FILE_OPEN_REPARSE_POINT;
+
+    Ios.Information = -1;
+    Ios.u.Status = 0;
+    MyInitializeObjectAttributes(&ObjAttr, pNtPath, fObjAttribs, hRoot, NULL /*pSecAttr*/);
+
+    rcNt = g_pfnNtCreateFile(phFile,
+                             fDesiredAccess,
+                             &ObjAttr,
+                             &Ios,
+                             NULL,   /* cbFileInitialAlloc */
+                             fFileAttribs,
+                             fShareAccess,
+                             fCreateDisposition,
+                             fCreateOptions,
+                             NULL,   /* pEaBuffer */
+                             0);     /* cbEaBuffer*/
+    if (   rcNt == STATUS_INVALID_PARAMETER
+        && g_fHaveOpenReparsePoint < 0
+        && (fCreateOptions & FILE_OPEN_REPARSE_POINT))
+    {
+        fCreateOptions &= ~FILE_OPEN_REPARSE_POINT;
+
+        Ios.Information = -1;
+        Ios.u.Status = 0;
+        MyInitializeObjectAttributes(&ObjAttr, pNtPath, fObjAttribs, NULL /*hRoot*/, NULL /*pSecAttr*/);
+
+        rcNt = g_pfnNtCreateFile(phFile,
+                                 fDesiredAccess,
+                                 &ObjAttr,
+                                 &Ios,
+                                 NULL,   /* cbFileInitialAlloc */
+                                 fFileAttribs,
+                                 fShareAccess,
+                                 fCreateDisposition,
+                                 fCreateOptions,
+                                 NULL,   /* pEaBuffer */
+                                 0);     /* cbEaBuffer*/
+        if (rcNt != STATUS_INVALID_PARAMETER)
+            g_fHaveOpenReparsePoint = 0;
+    }
+    return rcNt;
+}
+
+
+HANDLE birdOpenFile(const char *pszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                    ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs)
+{
+    MY_UNICODE_STRING   NtPath;
+    MY_NTSTATUS         rcNt;
+
+    /*
+     * Adjust inputs.
+     */
+    if (birdIsPathDirSpec(pszPath))
+        fCreateOptions |= FILE_DIRECTORY_FILE;
+
+    /*
+     * Convert the path and call birdOpenFileUniStr to do the real work.
+     */
+    if (birdDosToNtPath(pszPath, &NtPath) == 0)
+    {
+        HANDLE hFile;
+        rcNt = birdOpenFileUniStr(NULL /*hRoot*/, &NtPath, fDesiredAccess, fFileAttribs, fShareAccess,
+                                  fCreateDisposition, fCreateOptions, fObjAttribs, &hFile);
+        birdFreeNtPath(&NtPath);
+        if (MY_NT_SUCCESS(rcNt))
+            return hFile;
+        birdSetErrnoFromNt(rcNt);
+    }
+
+    return INVALID_HANDLE_VALUE;
+}
+
+
+HANDLE birdOpenFileW(const wchar_t *pwszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                     ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs)
+{
+    MY_UNICODE_STRING   NtPath;
+    MY_NTSTATUS         rcNt;
+
+    /*
+     * Adjust inputs.
+     */
+    if (birdIsPathDirSpecW(pwszPath))
+        fCreateOptions |= FILE_DIRECTORY_FILE;
+
+    /*
+     * Convert the path and call birdOpenFileUniStr to do the real work.
+     */
+    if (birdDosToNtPathW(pwszPath, &NtPath) == 0)
+    {
+        HANDLE hFile;
+        rcNt = birdOpenFileUniStr(NULL /*hRoot*/, &NtPath, fDesiredAccess, fFileAttribs, fShareAccess,
+                                  fCreateDisposition, fCreateOptions, fObjAttribs, &hFile);
+        birdFreeNtPath(&NtPath);
+        if (MY_NT_SUCCESS(rcNt))
+            return hFile;
+        birdSetErrnoFromNt(rcNt);
+    }
+
+    return INVALID_HANDLE_VALUE;
+}
+
+
+HANDLE birdOpenFileEx(HANDLE hRoot, const char *pszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                      ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs)
+{
+    MY_UNICODE_STRING   NtPath;
+    MY_NTSTATUS         rcNt;
+
+    /*
+     * Adjust inputs.
+     */
+    if (birdIsPathDirSpec(pszPath))
+        fCreateOptions |= FILE_DIRECTORY_FILE;
+
+    /*
+     * Convert the path and call birdOpenFileUniStr to do the real work.
+     */
+    if (hRoot == INVALID_HANDLE_VALUE)
+        hRoot = NULL;
+    if ((hRoot != NULL ? birdDosToRelativeNtPath(pszPath, &NtPath) : birdDosToNtPath(pszPath, &NtPath)) == 0)
+    {
+        HANDLE hFile;
+        rcNt = birdOpenFileUniStr(hRoot, &NtPath, fDesiredAccess, fFileAttribs, fShareAccess,
+                                  fCreateDisposition, fCreateOptions, fObjAttribs, &hFile);
+        birdFreeNtPath(&NtPath);
+        if (MY_NT_SUCCESS(rcNt))
+            return hFile;
+        birdSetErrnoFromNt(rcNt);
+    }
+
+    return INVALID_HANDLE_VALUE;
+}
+
+
+HANDLE birdOpenFileExW(HANDLE hRoot, const wchar_t *pwszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                       ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs)
+{
+    MY_UNICODE_STRING   NtPath;
+    MY_NTSTATUS         rcNt;
+
+    /*
+     * Adjust inputs.
+     */
+    if (birdIsPathDirSpecW(pwszPath))
+        fCreateOptions |= FILE_DIRECTORY_FILE;
+
+    /*
+     * Convert the path (could save ourselves this if pwszPath is perfect) and
+     * call birdOpenFileUniStr to do the real work.
+     */
+    if (hRoot == INVALID_HANDLE_VALUE)
+        hRoot = NULL;
+    if ((hRoot != NULL ? birdDosToRelativeNtPathW(pwszPath, &NtPath) : birdDosToNtPathW(pwszPath, &NtPath)) == 0)
+    {
+        HANDLE hFile;
+        rcNt = birdOpenFileUniStr(hRoot, &NtPath, fDesiredAccess, fFileAttribs, fShareAccess,
+                                  fCreateDisposition, fCreateOptions, fObjAttribs, &hFile);
+        birdFreeNtPath(&NtPath);
+        if (MY_NT_SUCCESS(rcNt))
+            return hFile;
+        birdSetErrnoFromNt(rcNt);
+    }
+
+    return INVALID_HANDLE_VALUE;
+}
+
+
+static HANDLE birdOpenParentDirCommon(HANDLE hRoot, MY_UNICODE_STRING *pNtPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                                      ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs,
+                                      MY_UNICODE_STRING *pNameUniStr)
+{
+    MY_NTSTATUS rcNt;
+
+    /*
+     * Strip the path down to the directory.
+     */
+    USHORT offName = pNtPath->Length / sizeof(WCHAR);
+    USHORT cwcName = offName;
+    WCHAR  wc = 0;
+    while (   offName > 0
+           && (wc = pNtPath->Buffer[offName - 1]) != '\\'
+           && wc != '/'
+           && wc != ':')
+        offName--;
+    if (   offName > 0
+        || (hRoot != NULL && cwcName > 0))
+    {
+        cwcName -= offName;
+
+        /* Make a copy of the file name, if requested. */
+        rcNt = STATUS_SUCCESS;
+        if (pNameUniStr)
+        {
+            pNameUniStr->Length        = cwcName * sizeof(WCHAR);
+            pNameUniStr->MaximumLength = pNameUniStr->Length + sizeof(WCHAR);
+            pNameUniStr->Buffer        = (WCHAR *)HeapAlloc(GetProcessHeap(), 0, pNameUniStr->MaximumLength);
+            if (pNameUniStr->Buffer)
+            {
+                memcpy(pNameUniStr->Buffer, &pNtPath->Buffer[offName], pNameUniStr->Length);
+                pNameUniStr->Buffer[cwcName] = '\0';
+            }
+            else
+                rcNt = STATUS_NO_MEMORY;
+        }
+
+        /* Chop, chop. */
+        // Bad idea, breaks \\?\c:\pagefile.sys. //while (   offName > 0
+        // Bad idea, breaks \\?\c:\pagefile.sys. //       && (   (wc = pNtPath->Buffer[offName - 1]) == '\\'
+        // Bad idea, breaks \\?\c:\pagefile.sys. //           || wc == '/'))
+        // Bad idea, breaks \\?\c:\pagefile.sys. //    offName--;
+        if (offName == 0)
+            pNtPath->Buffer[offName++] = '.'; /* Hack for dir handle + dir entry name. */
+        pNtPath->Length = offName * sizeof(WCHAR);
+        pNtPath->Buffer[offName] = '\0';
+        if (MY_NT_SUCCESS(rcNt))
+        {
+            /*
+             * Finally, try open the directory.
+             */
+            HANDLE hFile;
+            fCreateOptions |= FILE_DIRECTORY_FILE;
+            rcNt = birdOpenFileUniStr(hRoot, pNtPath, fDesiredAccess, fFileAttribs, fShareAccess,
+                                      fCreateDisposition, fCreateOptions, fObjAttribs, &hFile);
+            if (MY_NT_SUCCESS(rcNt))
+            {
+                birdFreeNtPath(pNtPath);
+                return hFile;
+            }
+        }
+
+        if (pNameUniStr)
+            birdFreeNtPath(pNameUniStr);
+    }
+    else
+        rcNt = STATUS_INVALID_PARAMETER;
+
+    birdFreeNtPath(pNtPath);
+    birdSetErrnoFromNt(rcNt);
+    return INVALID_HANDLE_VALUE;
+}
+
+
+HANDLE birdOpenParentDir(HANDLE hRoot, const char *pszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                         ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs,
+                         MY_UNICODE_STRING *pNameUniStr)
+{
+    /*
+     * Convert the path and join up with the UTF-16 version (it'll free NtPath).
+     */
+    MY_UNICODE_STRING NtPath;
+    if (hRoot == INVALID_HANDLE_VALUE)
+        hRoot = NULL;
+    if (  hRoot == NULL
+        ? birdDosToNtPath(pszPath, &NtPath) == 0
+        : birdDosToRelativeNtPath(pszPath, &NtPath) == 0)
+        return birdOpenParentDirCommon(hRoot, &NtPath, fDesiredAccess, fFileAttribs, fShareAccess,
+                                       fCreateDisposition, fCreateOptions, fObjAttribs, pNameUniStr);
+    return INVALID_HANDLE_VALUE;
+}
+
+
+HANDLE birdOpenParentDirW(HANDLE hRoot, const wchar_t *pwszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs,
+                          ULONG fShareAccess, ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs,
+                          MY_UNICODE_STRING *pNameUniStr)
+{
+    /*
+     * Convert the path and join up with the ansi version (it'll free NtPath).
+     */
+    MY_UNICODE_STRING NtPath;
+    if (hRoot == INVALID_HANDLE_VALUE)
+        hRoot = NULL;
+    if (  hRoot == NULL
+        ? birdDosToNtPathW(pwszPath, &NtPath) == 0
+        : birdDosToRelativeNtPathW(pwszPath, &NtPath) == 0)
+        return birdOpenParentDirCommon(hRoot, &NtPath, fDesiredAccess, fFileAttribs, fShareAccess,
+                                       fCreateDisposition, fCreateOptions, fObjAttribs, pNameUniStr);
+    return INVALID_HANDLE_VALUE;
+}
+
+
+/**
+ * Returns a handle to the current working directory of the process.
+ *
+ * @returns CWD handle with FILE_TRAVERSE and SYNCHRONIZE access.  May return
+ *          INVALID_HANDLE_VALUE w/ errno for invalid CWD.
+ */
+HANDLE birdOpenCurrentDirectory(void)
+{
+    PMY_RTL_USER_PROCESS_PARAMETERS pProcParams;
+    MY_NTSTATUS rcNt;
+    HANDLE hRet = INVALID_HANDLE_VALUE;
+
+    birdResolveImports();
+
+    /*
+     * We'll try get this from the PEB.
+     */
+    g_pfnRtlAcquirePebLock();
+    pProcParams = (PMY_RTL_USER_PROCESS_PARAMETERS)MY_NT_CURRENT_PEB()->ProcessParameters;
+    if (pProcParams != NULL)
+        rcNt = g_pfnNtDuplicateObject(MY_NT_CURRENT_PROCESS, pProcParams->CurrentDirectory.Handle,
+                                      MY_NT_CURRENT_PROCESS, &hRet,
+                                      FILE_TRAVERSE | SYNCHRONIZE,
+                                      0 /*fAttribs*/,
+                                      0 /*fOptions*/);
+    else
+        rcNt = STATUS_INVALID_PARAMETER;
+    g_pfnRtlReleasePebLock();
+    if (MY_NT_SUCCESS(rcNt))
+        return hRet;
+
+    /*
+     * Fallback goes thru birdOpenFileW.
+     */
+    return birdOpenFileW(L".",
+                         FILE_TRAVERSE | SYNCHRONIZE,
+                         FILE_ATTRIBUTE_NORMAL,
+                         FILE_SHARE_READ | FILE_SHARE_WRITE,
+                         FILE_OPEN,
+                         FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+                         OBJ_CASE_INSENSITIVE);
+}
+
+
+void birdCloseFile(HANDLE hFile)
+{
+    birdResolveImports();
+    g_pfnNtClose(hFile);
+}
+
diff --git a/src/lib/nt/ntopenat.c b/src/lib/nt/ntopenat.c
new file mode 100644
index 0000000..6db4de7
--- /dev/null
+++ b/src/lib/nt/ntopenat.c
@@ -0,0 +1,161 @@
+/* $Id: ntdir.c 3007 2016-11-06 16:46:43Z bird $ */

+/** @file

+ * MSC + NT openat API.

+ */

+

+/*

+ * Copyright (c) 2005-2021 knut st. osmundsen <bird-kBuild-spamx@anduin.net>

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice shall be included

+ * in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

+ * IN THE SOFTWARE.

+ *

+ * Alternatively, the content of this file may be used under the terms of the

+ * GPL version 2 or later, or LGPL version 2.1 or later.

+ */

+

+

+/*******************************************************************************

+*   Header Files                                                               *

+*******************************************************************************/

+#include <errno.h>

+#include <assert.h>

+#include <fcntl.h>

+#include <io.h>

+

+#include "ntstuff.h"

+#include "nthlp.h"

+#include "ntopenat.h"

+#include "ntstat.h"

+

+

+#define IS_ALPHA(ch) ( ((ch) >= 'A' && (ch) <= 'Z') || ((ch) >= 'a' && (ch) <= 'z') )

+#define IS_SLASH(ch) ((ch) == '\\' || (ch) == '/')

+

+

+

+static int birdOpenInt(const char *pszPath, int fFlags, unsigned __int16 fMode)

+{

+    /*

+     * Try open it using the CRT's open function, but deal with opening

+     * directories as the CRT doesn't allow doing that.

+     */

+    int const iErrnoSaved = errno;

+    int fd = open(pszPath, fFlags, fMode);

+    if (   fd < 0

+        && (errno == EACCES || errno == ENOENT || errno == EISDIR)

+        && (fFlags & (_O_WRONLY | _O_RDWR | _O_RDONLY)) == _O_RDONLY

+        && (fFlags & (_O_CREAT | _O_TRUNC | _O_EXCL)) == 0 )

+    {

+        BirdStat_T Stat;

+        if (!birdStatFollowLink(pszPath, &Stat))

+        {

+            if (S_ISDIR(Stat.st_mode))

+            {

+                HANDLE hDir;

+                errno = iErrnoSaved;

+                hDir = birdOpenFile(pszPath,

+                                    FILE_READ_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE,

+                                    FILE_ATTRIBUTE_NORMAL,

+                                    FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,

+                                    FILE_OPEN,

+                                    FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,

+                                    OBJ_CASE_INSENSITIVE);

+                if (hDir != INVALID_HANDLE_VALUE)

+                {

+                    fd = _open_osfhandle((intptr_t)hDir, fFlags);

+                    if (fd >= 0)

+                        return fd;

+                    birdCloseFile(hDir);

+                }

+            }

+            else

+                errno = EACCES;

+        }

+        else

+            errno = EACCES;

+    }

+    return fd;

+}

+

+

+int birdOpen(const char *pszPath, int fFlags, ...)

+{

+    unsigned __int16 fMode;

+    va_list va;

+    va_start(va, fFlags);

+    fMode = va_arg(va, unsigned __int16);

+    va_end(va);

+    return birdOpenInt(pszPath, fFlags, fMode);

+}

+

+

+

+/**

+ * Implements opendir.

+ */

+int birdOpenAt(int fdDir, const char *pszPath, int fFlags, ...)

+{

+    HANDLE hDir;

+

+    /*

+     * Retrieve the mode mask.

+     */

+    unsigned __int16 fMode;

+    va_list va;

+    va_start(va, fFlags);

+    fMode = va_arg(va, unsigned __int16);

+    va_end(va);

+

+    /*

+     * Just call 'open' directly if we can get away with it:

+     */

+    if (fdDir == AT_FDCWD)

+        return birdOpenInt(pszPath, fFlags, fMode);

+

+    if (IS_SLASH(pszPath[0]))

+    {

+        if (IS_SLASH(pszPath[1]) && !IS_SLASH(pszPath[2]) && pszPath[2] != '\0')

+            return birdOpenInt(pszPath, fFlags, fMode);

+    }

+    else if (IS_ALPHA(pszPath[0]) && pszPath[1] == ':')

+    {

+        if (IS_SLASH(pszPath[2]))

+            return birdOpenInt(pszPath, fFlags, fMode);

+        /*

+         * Drive letter relative path like "C:kernel32.dll".

+         * We could try use fdDir as the CWD here if it refers to the same drive,

+         * however that's can be implemented later...

+         */

+        return birdOpenInt(pszPath, fFlags, fMode);

+    }

+

+    /*

+     * Otherwise query the path of fdDir and construct an absolute path from all that.

+     * This isn't atomic and safe and stuff, but it gets the work done for now.

+     */

+    hDir = (HANDLE)_get_osfhandle(fdDir);

+    if (hDir != INVALID_HANDLE_VALUE)

+    {

+        /** @todo implement me.   */

+        __debugbreak();

+        errno = EBADF;

+    }

+    return -1;

+}

+

+

diff --git a/src/lib/nt/ntopenat.h b/src/lib/nt/ntopenat.h
new file mode 100644
index 0000000..8ea3caa
--- /dev/null
+++ b/src/lib/nt/ntopenat.h
@@ -0,0 +1,43 @@
+/* $Id: ntdir.h 3005 2016-11-06 00:07:37Z bird $ */

+/** @file

+ * MSC + NT openat.

+ */

+

+/*

+ * Copyright (c) 2005-2021 knut st. osmundsen <bird-kBuild-spamx@anduin.net>

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice shall be included

+ * in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

+ * IN THE SOFTWARE.

+ *

+ * Alternatively, the content of this file may be used under the terms of the

+ * GPL version 2 or later, or LGPL version 2.1 or later.

+ */

+

+#ifndef ___nt_ntopenat_h

+#define ___nt_ntopenat_h

+

+#include "nttypes.h"

+

+extern int birdOpenAt(int fdDir, const char *pszPath, int fFlags, ...);

+

+#define openat                      birdOpenAt

+

+#define AT_FDCWD        (-987654321)

+

+#endif

+

diff --git a/src/lib/nt/ntstat.c b/src/lib/nt/ntstat.c
new file mode 100644
index 0000000..0aa30ab
--- /dev/null
+++ b/src/lib/nt/ntstat.c
@@ -0,0 +1,1065 @@
+/* $Id: ntstat.c 3485 2020-09-21 12:25:08Z bird $ */
+/** @file
+ * MSC + NT stat, lstat and fstat.
+ */
+
+/*
+ * Copyright (c) 2005-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <stdio.h>
+#include <errno.h>
+#include <malloc.h>
+
+#include "ntstuff.h"
+#include "nthlp.h"
+#include "ntstat.h"
+
+
+#undef stat
+
+static int birdIsExecutableExtension(const char *pszExt)
+{
+    switch (pszExt[0])
+    {
+        default:
+            return 0;
+
+        case 'e': /* exe */
+            return pszExt[1] == 'x' && pszExt[2] == 'e' && pszExt[3] == '\0';
+
+        case 'b': /* bat */
+            return pszExt[1] == 'a' && pszExt[2] == 't' && pszExt[3] == '\0';
+
+        case 'v': /* vbs */
+            return pszExt[1] == 'b' && pszExt[2] == 's' && pszExt[3] == '\0';
+
+        case 'c': /* com and cmd */
+            return (pszExt[1] == 'o' && pszExt[2] == 'm' && pszExt[3] == '\0')
+                || (pszExt[1] == 'm' && pszExt[2] == 'd' && pszExt[3] == '\0');
+    }
+}
+
+
+static int birdIsFileExecutable(const char *pszName)
+{
+    if (pszName)
+    {
+        const char     *pszExt = NULL;
+        char            szExt[8];
+        size_t          cchExt;
+        unsigned        i;
+        char            ch;
+
+        /* Look for a 3 char extension. */
+        ch = *pszName++;
+        if (!ch)
+            return 0;
+
+        while ((ch = *pszName++) != '\0')
+            if (ch == '.')
+                pszExt = pszName;
+
+        if (!pszExt)
+            return 0;
+        pszExt++;
+        cchExt = pszName - pszExt;
+        if (cchExt != 3)
+            return 0;
+
+        /* Copy the extension out and lower case it.  Fail immediately on non-alpha chars. */
+        for (i = 0; i < cchExt; i++, pszExt++)
+        {
+            ch = *pszExt;
+            if (ch >= 'a' && ch <= 'z')
+            { /* likely */ }
+            else if (ch >= 'A' && ch <= 'Z')
+                ch += 'a' - 'A';
+            else
+                return 0;
+            szExt[i] = ch;
+        }
+        szExt[i] = '\0';
+
+        return birdIsExecutableExtension(szExt);
+    }
+
+    return 0;
+}
+
+
+/**
+ * @a pwcName could be the full path.
+ */
+static int birdIsFileExecutableW(WCHAR const *pwcName, size_t cwcName)
+{
+    char            szExt[8];
+    unsigned        cchExt;
+    unsigned        i;
+    WCHAR const    *pwc;
+
+    /* Look for a 3 char extension. */
+    if (cwcName > 2 && pwcName[cwcName - 2] == '.')
+        return 0;
+    else if (cwcName > 3 && pwcName[cwcName - 3] == '.')
+        return 0;
+    else if (cwcName > 4 && pwcName[cwcName - 4] == '.')
+        cchExt = 3;
+    else
+        return 0;
+
+    /* Copy the extension out and lower case it.  Fail immediately on non-alpha chars. */
+    pwc = &pwcName[cwcName - cchExt];
+    for (i = 0; i < cchExt; i++, pwc++)
+    {
+        WCHAR wc = *pwc;
+        if (wc >= 'a' && wc <= 'z')
+        { /* likely */ }
+        else if (wc >= 'A' && wc <= 'Z')
+            wc += 'a' - 'A';
+        else
+            return 0;
+        szExt[i] = (char)wc;
+    }
+    szExt[i] = '\0';
+
+    return birdIsExecutableExtension(szExt);
+}
+
+
+static unsigned short birdFileInfoToMode(ULONG fAttribs, ULONG uReparseTag,
+                                         const char *pszName, const wchar_t *pwszName, size_t cbNameW,
+                                         unsigned __int8 *pfIsDirSymlink, unsigned __int8 *pfIsMountPoint)
+{
+    unsigned short fMode;
+
+    /* File type. */
+    *pfIsDirSymlink = 0;
+    *pfIsMountPoint = 0;
+    if (!(fAttribs & FILE_ATTRIBUTE_REPARSE_POINT))
+    {
+        if (fAttribs & FILE_ATTRIBUTE_DIRECTORY)
+            fMode = S_IFDIR;
+        else
+            fMode = S_IFREG;
+    }
+    else
+    {
+        switch (uReparseTag)
+        {
+            case IO_REPARSE_TAG_SYMLINK:
+                *pfIsDirSymlink = !!(fAttribs & FILE_ATTRIBUTE_DIRECTORY);
+                fMode = S_IFLNK;
+                break;
+
+            case IO_REPARSE_TAG_MOUNT_POINT:
+                *pfIsMountPoint = 1;
+            default:
+                if (fAttribs & FILE_ATTRIBUTE_DIRECTORY)
+                    fMode = S_IFDIR;
+                else
+                    fMode = S_IFREG;
+                break;
+        }
+    }
+
+    /* Access mask. */
+    fMode |= S_IROTH | S_IRGRP | S_IRUSR;
+    if (!(fAttribs & FILE_ATTRIBUTE_READONLY))
+        fMode |= S_IWOTH | S_IWGRP | S_IWUSR;
+    if (   (fAttribs & FILE_ATTRIBUTE_DIRECTORY)
+        || (pwszName
+            ? birdIsFileExecutableW(pwszName, cbNameW / sizeof(wchar_t))
+            : birdIsFileExecutable(pszName)) )
+        fMode |= S_IXOTH | S_IXGRP | S_IXUSR;
+
+    return fMode;
+}
+
+
+/**
+ * Fills in a stat structure from an MY_FILE_ID_FULL_DIR_INFORMATION entry.
+ *
+ * @param   pStat               The stat structure.
+ * @param   pBuf                The MY_FILE_ID_FULL_DIR_INFORMATION entry.
+ * @remarks Caller sets st_dev.
+ */
+void birdStatFillFromFileIdFullDirInfo(BirdStat_T *pStat, MY_FILE_ID_FULL_DIR_INFORMATION const *pBuf)
+{
+    pStat->st_mode          = birdFileInfoToMode(pBuf->FileAttributes, pBuf->EaSize, NULL /*pszPath*/, pBuf->FileName,
+                                                 pBuf->FileNameLength, &pStat->st_isdirsymlink, &pStat->st_ismountpoint);
+    pStat->st_padding0[0]   = 0;
+    pStat->st_padding0[1]   = 0;
+    pStat->st_size          = pBuf->EndOfFile.QuadPart;
+    birdNtTimeToTimeSpec(pBuf->CreationTime.QuadPart,   &pStat->st_birthtim);
+    birdNtTimeToTimeSpec(pBuf->ChangeTime.QuadPart,     &pStat->st_ctim);
+    birdNtTimeToTimeSpec(pBuf->LastWriteTime.QuadPart,  &pStat->st_mtim);
+    birdNtTimeToTimeSpec(pBuf->LastAccessTime.QuadPart, &pStat->st_atim);
+    pStat->st_ino           = pBuf->FileId.QuadPart;
+    pStat->st_nlink         = 1;
+    pStat->st_rdev          = 0;
+    pStat->st_uid           = 0;
+    pStat->st_gid           = 0;
+    pStat->st_padding1      = 0;
+    pStat->st_attribs       = pBuf->FileAttributes;
+    pStat->st_blksize       = 65536;
+    pStat->st_blocks        = (pBuf->AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
+                            / BIRD_STAT_BLOCK_SIZE;
+}
+
+
+/**
+ * Fills in a stat structure from an MY_FILE_ID_BOTH_DIR_INFORMATION entry.
+ *
+ * @param   pStat               The stat structure.
+ * @param   pBuf                The MY_FILE_ID_BOTH_DIR_INFORMATION entry.
+ * @remarks Caller sets st_dev.
+ */
+void birdStatFillFromFileIdBothDirInfo(BirdStat_T *pStat, MY_FILE_ID_BOTH_DIR_INFORMATION const *pBuf)
+{
+    pStat->st_mode          = birdFileInfoToMode(pBuf->FileAttributes, pBuf->EaSize, NULL /*pszPath*/, pBuf->FileName,
+                                                 pBuf->FileNameLength, &pStat->st_isdirsymlink, &pStat->st_ismountpoint);
+    pStat->st_padding0[0]   = 0;
+    pStat->st_padding0[1]   = 0;
+    pStat->st_size          = pBuf->EndOfFile.QuadPart;
+    birdNtTimeToTimeSpec(pBuf->CreationTime.QuadPart,   &pStat->st_birthtim);
+    birdNtTimeToTimeSpec(pBuf->ChangeTime.QuadPart,     &pStat->st_ctim);
+    birdNtTimeToTimeSpec(pBuf->LastWriteTime.QuadPart,  &pStat->st_mtim);
+    birdNtTimeToTimeSpec(pBuf->LastAccessTime.QuadPart, &pStat->st_atim);
+    pStat->st_ino           = pBuf->FileId.QuadPart;
+    pStat->st_nlink         = 1;
+    pStat->st_rdev          = 0;
+    pStat->st_uid           = 0;
+    pStat->st_gid           = 0;
+    pStat->st_padding1      = 0;
+    pStat->st_attribs       = pBuf->FileAttributes;
+    pStat->st_blksize       = 65536;
+    pStat->st_blocks        = (pBuf->AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
+                            / BIRD_STAT_BLOCK_SIZE;
+}
+
+
+/**
+ * Fills in a stat structure from an MY_FILE_BOTH_DIR_INFORMATION entry.
+ *
+ * @param   pStat               The stat structure.
+ * @param   pBuf                The MY_FILE_BOTH_DIR_INFORMATION entry.
+ * @remarks Caller sets st_dev.
+ */
+void birdStatFillFromFileBothDirInfo(BirdStat_T *pStat, MY_FILE_BOTH_DIR_INFORMATION const *pBuf)
+{
+    pStat->st_mode          = birdFileInfoToMode(pBuf->FileAttributes, pBuf->EaSize, NULL /*pszPath*/, pBuf->FileName,
+                                                 pBuf->FileNameLength, &pStat->st_isdirsymlink, &pStat->st_ismountpoint);
+    pStat->st_padding0[0]   = 0;
+    pStat->st_padding0[1]   = 0;
+    pStat->st_size          = pBuf->EndOfFile.QuadPart;
+    birdNtTimeToTimeSpec(pBuf->CreationTime.QuadPart,   &pStat->st_birthtim);
+    birdNtTimeToTimeSpec(pBuf->ChangeTime.QuadPart,     &pStat->st_ctim);
+    birdNtTimeToTimeSpec(pBuf->LastWriteTime.QuadPart,  &pStat->st_mtim);
+    birdNtTimeToTimeSpec(pBuf->LastAccessTime.QuadPart, &pStat->st_atim);
+    pStat->st_ino           = 0;
+    pStat->st_nlink         = 1;
+    pStat->st_rdev          = 0;
+    pStat->st_uid           = 0;
+    pStat->st_gid           = 0;
+    pStat->st_padding1      = 0;
+    pStat->st_attribs       = pBuf->FileAttributes;
+    pStat->st_blksize       = 65536;
+    pStat->st_blocks        = (pBuf->AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
+                            / BIRD_STAT_BLOCK_SIZE;
+}
+
+
+int birdStatHandle2(HANDLE hFile, BirdStat_T *pStat, const char *pszPath, const wchar_t *pwszPath)
+{
+    int                      rc;
+    MY_NTSTATUS              rcNt;
+#if 0
+    ULONG                    cbAll = sizeof(MY_FILE_ALL_INFORMATION) + 0x10000;
+    MY_FILE_ALL_INFORMATION *pAll  = (MY_FILE_ALL_INFORMATION *)birdTmpAlloc(cbAll);
+    if (pAll)
+    {
+        MY_IO_STATUS_BLOCK Ios;
+        Ios.Information = 0;
+        Ios.u.Status    = -1;
+        rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, pAll, cbAll, MyFileAllInformation);
+        if (MY_NT_SUCCESS(rcNt))
+            rcNt = Ios.u.Status;
+        if (MY_NT_SUCCESS(rcNt))
+        {
+            pStat->st_mode          = birdFileInfoToMode(pAll->BasicInformation.FileAttributes, pszPath,
+                                                         pAll->NameInformation.FileNamepAll->NameInformation.FileNameLength,
+                                                         hFile, &pStat->st_isdirsymlink, &pStat->st_ismountpoint);
+            pStat->st_padding0[0]   = 0;
+            pStat->st_padding0[1]   = 0;
+            pStat->st_size          = pAll->StandardInformation.EndOfFile.QuadPart;
+            birdNtTimeToTimeSpec(pAll->BasicInformation.CreationTime.QuadPart,   &pStat->st_birthtim);
+            birdNtTimeToTimeSpec(pAll->BasicInformation.ChangeTime.QuadPart,     &pStat->st_ctim);
+            birdNtTimeToTimeSpec(pAll->BasicInformation.LastWriteTime.QuadPart,  &pStat->st_mtim);
+            birdNtTimeToTimeSpec(pAll->BasicInformation.LastAccessTime.QuadPart, &pStat->st_atim);
+            pStat->st_ino           = pAll->InternalInformation.IndexNumber.QuadPart;
+            pStat->st_nlink         = pAll->StandardInformation.NumberOfLinks;
+            pStat->st_rdev          = 0;
+            pStat->st_uid           = 0;
+            pStat->st_gid           = 0;
+            pStat->st_padding1      = 0;
+            pStat->st_attribs       = pAll->StandardInformation.FileAttributes;
+            pStat->st_blksize       = 65536;
+            pStat->st_blocks        = (pAll->StandardInformation.AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
+                                    / BIRD_STAT_BLOCK_SIZE;
+
+            /* Get the serial number, reusing the buffer from above. */
+            rcNt = g_pfnNtQueryVolumeInformationFile(hFile, &Ios, pAll, cbAll, MyFileFsVolumeInformation);
+            if (MY_NT_SUCCESS(rcNt))
+                rcNt = Ios.u.Status;
+            if (MY_NT_SUCCESS(rcNt))
+            {
+                MY_FILE_FS_VOLUME_INFORMATION const *pVolInfo = (MY_FILE_FS_VOLUME_INFORMATION const *)pAll;
+                pStat->st_dev       = pVolInfo->VolumeSerialNumber
+                                    | (pVolInfo->VolumeCreationTime.QuadPart << 32);
+                rc = 0;
+            }
+            else
+            {
+                pStat->st_dev       = 0;
+                rc = birdSetErrnoFromNt(rcNt);
+            }
+        }
+        else
+            rc = birdSetErrnoFromNt(rcNt);
+    }
+    else
+        rc = birdSetErrnoToNoMem();
+#else
+    ULONG                               cbNameInfo = 0;
+    MY_FILE_NAME_INFORMATION           *pNameInfo  = NULL;
+    MY_FILE_STANDARD_INFORMATION        StdInfo;
+    MY_FILE_BASIC_INFORMATION           BasicInfo;
+    MY_FILE_INTERNAL_INFORMATION        InternalInfo;
+    MY_FILE_ATTRIBUTE_TAG_INFORMATION   TagInfo;
+    MY_IO_STATUS_BLOCK                  Ios;
+
+    Ios.Information = 0;
+    Ios.u.Status    = -1;
+    rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, &StdInfo, sizeof(StdInfo), MyFileStandardInformation);
+    if (MY_NT_SUCCESS(rcNt))
+        rcNt = Ios.u.Status;
+
+    if (MY_NT_SUCCESS(rcNt))
+        rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, &BasicInfo, sizeof(BasicInfo), MyFileBasicInformation);
+    if (MY_NT_SUCCESS(rcNt))
+        rcNt = Ios.u.Status;
+
+    if (MY_NT_SUCCESS(rcNt))
+        rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, &InternalInfo, sizeof(InternalInfo), MyFileInternalInformation);
+    if (MY_NT_SUCCESS(rcNt))
+        rcNt = Ios.u.Status;
+
+    if (MY_NT_SUCCESS(rcNt))
+    {
+        if (!(BasicInfo.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT))
+            TagInfo.ReparseTag = 0;
+        else
+        {
+            MY_NTSTATUS rcNt2 = g_pfnNtQueryInformationFile(hFile, &Ios, &TagInfo, sizeof(TagInfo), MyFileAttributeTagInformation);
+            if (   !MY_NT_SUCCESS(rcNt2)
+                || !MY_NT_SUCCESS(Ios.u.Status))
+                TagInfo.ReparseTag = 0;
+        }
+    }
+
+    if (   MY_NT_SUCCESS(rcNt)
+        && !pszPath
+        && !pwszPath
+        && !(BasicInfo.FileAttributes & FILE_ATTRIBUTE_DIRECTORY))
+    {
+        cbNameInfo = 0x10020;
+        pNameInfo  = (MY_FILE_NAME_INFORMATION *)alloca(cbNameInfo);
+        rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, pNameInfo, cbNameInfo, MyFileNameInformation);
+        if (MY_NT_SUCCESS(rcNt))
+            rcNt = Ios.u.Status;
+    }
+
+    if (MY_NT_SUCCESS(rcNt))
+    {
+        pStat->st_mode          = birdFileInfoToMode(BasicInfo.FileAttributes, TagInfo.ReparseTag, pszPath,
+                                                     pNameInfo ? pNameInfo->FileName : pwszPath,
+                                                     pNameInfo ? pNameInfo->FileNameLength
+                                                     : pwszPath ? wcslen(pwszPath) * sizeof(wchar_t) : 0,
+                                                     &pStat->st_isdirsymlink, &pStat->st_ismountpoint);
+        pStat->st_padding0[0]   = 0;
+        pStat->st_padding0[1]   = 0;
+        pStat->st_size          = StdInfo.EndOfFile.QuadPart;
+        birdNtTimeToTimeSpec(BasicInfo.CreationTime.QuadPart,   &pStat->st_birthtim);
+        birdNtTimeToTimeSpec(BasicInfo.ChangeTime.QuadPart,     &pStat->st_ctim);
+        birdNtTimeToTimeSpec(BasicInfo.LastWriteTime.QuadPart,  &pStat->st_mtim);
+        birdNtTimeToTimeSpec(BasicInfo.LastAccessTime.QuadPart, &pStat->st_atim);
+        pStat->st_ino           = InternalInfo.IndexNumber.QuadPart;
+        pStat->st_nlink         = StdInfo.NumberOfLinks;
+        pStat->st_rdev          = 0;
+        pStat->st_uid           = 0;
+        pStat->st_gid           = 0;
+        pStat->st_padding1      = 0;
+        pStat->st_attribs       = BasicInfo.FileAttributes;
+        pStat->st_blksize       = 65536;
+        pStat->st_blocks        = (StdInfo.AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
+                                / BIRD_STAT_BLOCK_SIZE;
+
+        /* Get the serial number, reusing the buffer from above. */
+        if (!cbNameInfo)
+        {
+            cbNameInfo = sizeof(MY_FILE_FS_VOLUME_INFORMATION) + 1024;
+            pNameInfo  = (MY_FILE_NAME_INFORMATION *)alloca(cbNameInfo);
+        }
+        rcNt = g_pfnNtQueryVolumeInformationFile(hFile, &Ios, pNameInfo, cbNameInfo, MyFileFsVolumeInformation);
+        if (MY_NT_SUCCESS(rcNt))
+            rcNt = Ios.u.Status;
+        if (MY_NT_SUCCESS(rcNt))
+        {
+            MY_FILE_FS_VOLUME_INFORMATION const *pVolInfo = (MY_FILE_FS_VOLUME_INFORMATION const *)pNameInfo;
+            pStat->st_dev       = pVolInfo->VolumeSerialNumber
+                                | (pVolInfo->VolumeCreationTime.QuadPart << 32);
+            rc = 0;
+        }
+        else
+        {
+            pStat->st_dev       = 0;
+            rc = birdSetErrnoFromNt(rcNt);
+        }
+    }
+    else
+        rc = birdSetErrnoFromNt(rcNt);
+
+#endif
+    return rc;
+}
+
+
+int birdStatHandle(HANDLE hFile, BirdStat_T *pStat, const char *pszPath)
+{
+    return birdStatHandle2(hFile, pStat, pszPath, NULL);
+}
+
+
+/**
+ * Generates a device number from the volume information.
+ *
+ * @returns Device number.
+ * @param   pVolInfo            Volume information.
+ */
+unsigned __int64 birdVolumeInfoToDeviceNumber(const MY_FILE_FS_VOLUME_INFORMATION *pVolInfo)
+{
+    return pVolInfo->VolumeSerialNumber
+         | (pVolInfo->VolumeCreationTime.QuadPart << 32);
+}
+
+
+/**
+ * Quries the volume information and generates a device number from it.
+ *
+ * @returns NT status code.
+ * @param   hFile               The file/dir/whatever to query the volume info
+ *                              and device number for.
+ * @param   pVolInfo            User provided buffer for volume information.
+ * @param   cbVolInfo           The size of the buffer.
+ * @param   puDevNo             Where to return the device number.  This is set
+ *                              to zero on failure.
+ */
+MY_NTSTATUS birdQueryVolumeDeviceNumber(HANDLE hFile, MY_FILE_FS_VOLUME_INFORMATION *pVolInfo, size_t cbVolInfo,
+                                        unsigned __int64 *puDevNo)
+{
+    MY_IO_STATUS_BLOCK  Ios;
+    MY_NTSTATUS         rcNt;
+
+    Ios.u.Status    = -1;
+    Ios.Information = -1;
+
+    pVolInfo->VolumeSerialNumber = 0;
+    pVolInfo->VolumeCreationTime.QuadPart = 0;
+
+    rcNt = g_pfnNtQueryVolumeInformationFile(hFile, &Ios, pVolInfo, (LONG)cbVolInfo, MyFileFsVolumeInformation);
+    if (MY_NT_SUCCESS(rcNt))
+    {
+        *puDevNo = birdVolumeInfoToDeviceNumber(pVolInfo);
+        return Ios.u.Status;
+    }
+    *puDevNo = 0;
+    return rcNt;
+}
+
+
+static int birdStatInternal(HANDLE hRoot, const char *pszPath, BirdStat_T *pStat, int fFollow)
+{
+    int rc;
+    HANDLE hFile = birdOpenFileEx(hRoot, pszPath,
+                                  FILE_READ_ATTRIBUTES,
+                                  FILE_ATTRIBUTE_NORMAL,
+                                  FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                  FILE_OPEN,
+                                  FILE_OPEN_FOR_BACKUP_INTENT | (fFollow ? 0 : FILE_OPEN_REPARSE_POINT),
+                                  OBJ_CASE_INSENSITIVE);
+    if (hFile != INVALID_HANDLE_VALUE)
+    {
+        rc = birdStatHandle2(hFile, pStat, pszPath, NULL);
+        birdCloseFile(hFile);
+
+        if (rc || !pStat->st_ismountpoint)
+        { /* very likely */ }
+        else
+        {
+            /*
+             * If we hit a mount point (NTFS volume mounted under an empty NTFS directory),
+             * we should return information about what's mounted there rather than the
+             * directory it is mounted at as this is what UNIX does.
+             */
+            hFile = birdOpenFileEx(hRoot, pszPath,
+                                   FILE_READ_ATTRIBUTES,
+                                   FILE_ATTRIBUTE_NORMAL,
+                                   FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                   FILE_OPEN,
+                                   FILE_OPEN_FOR_BACKUP_INTENT,
+                                   OBJ_CASE_INSENSITIVE);
+            if (hFile != INVALID_HANDLE_VALUE)
+            {
+                rc = birdStatHandle2(hFile, pStat, pszPath, NULL);
+                pStat->st_ismountpoint = 2;
+                birdCloseFile(hFile);
+            }
+        }
+
+#if 0
+        {
+            static char s_szPrev[256];
+            size_t cchPath = strlen(pszPath);
+            if (memcmp(s_szPrev, pszPath, cchPath >= 255 ? 255 : cchPath + 1) == 0)
+                fprintf(stderr, "stat: %s -> rc/errno=%d/%u\n", pszPath, rc, errno);
+            else
+                memcpy(s_szPrev, pszPath, cchPath + 1);
+        }
+#endif
+        //fprintf(stderr, "stat: %s -> rc/errno=%d/%u\n", pszPath, rc, errno);
+    }
+    else
+    {
+        //fprintf(stderr, "stat: %s -> %u\n", pszPath, GetLastError());
+
+        /*
+         * On things like pagefile.sys we may get sharing violation.  We fall
+         * back on directory enumeration for dealing with that.
+         */
+        if (   errno == ETXTBSY
+            && strchr(pszPath, '*') == NULL /* Serious paranoia... */
+            && strchr(pszPath, '?') == NULL)
+        {
+            MY_UNICODE_STRING NameUniStr;
+            hFile = birdOpenParentDir(hRoot, pszPath,
+                                      FILE_READ_DATA | SYNCHRONIZE,
+                                      FILE_ATTRIBUTE_NORMAL,
+                                      FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                      FILE_OPEN,
+                                      FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+                                      OBJ_CASE_INSENSITIVE,
+                                      &NameUniStr);
+            if (hFile != INVALID_HANDLE_VALUE)
+            {
+                MY_FILE_ID_FULL_DIR_INFORMATION *pBuf;
+                ULONG               cbBuf = sizeof(*pBuf) + NameUniStr.MaximumLength + 1024;
+                MY_IO_STATUS_BLOCK  Ios;
+                MY_NTSTATUS         rcNt;
+
+                pBuf = (MY_FILE_ID_FULL_DIR_INFORMATION *)alloca(cbBuf);
+                Ios.u.Status    = -1;
+                Ios.Information = -1;
+                rcNt = g_pfnNtQueryDirectoryFile(hFile, NULL, NULL, NULL, &Ios, pBuf, cbBuf,
+                                                 MyFileIdFullDirectoryInformation, FALSE, &NameUniStr, TRUE);
+                if (MY_NT_SUCCESS(rcNt))
+                    rcNt = Ios.u.Status;
+                if (MY_NT_SUCCESS(rcNt))
+                {
+                    /*
+                     * Convert the data.
+                     */
+                    birdStatFillFromFileIdFullDirInfo(pStat, pBuf);
+
+                    /* Get the serial number, reusing the buffer from above. */
+                    rcNt = birdQueryVolumeDeviceNumber(hFile, (MY_FILE_FS_VOLUME_INFORMATION *)pBuf, cbBuf, &pStat->st_dev);
+                    if (MY_NT_SUCCESS(rcNt))
+                        rc = 0;
+                    else
+                        rc = birdSetErrnoFromNt(rcNt);
+                }
+
+                birdFreeNtPath(&NameUniStr);
+                birdCloseFile(hFile);
+
+                if (MY_NT_SUCCESS(rcNt))
+                    return 0;
+                birdSetErrnoFromNt(rcNt);
+            }
+        }
+        rc = -1;
+    }
+
+    return rc;
+}
+
+
+static int birdStatInternalW(HANDLE hRoot, const wchar_t *pwszPath, BirdStat_T *pStat, int fFollow)
+{
+    int rc;
+    HANDLE hFile = birdOpenFileExW(hRoot, pwszPath,
+                                   FILE_READ_ATTRIBUTES,
+                                   FILE_ATTRIBUTE_NORMAL,
+                                   FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                   FILE_OPEN,
+                                   FILE_OPEN_FOR_BACKUP_INTENT | (fFollow ? 0 : FILE_OPEN_REPARSE_POINT),
+                                   OBJ_CASE_INSENSITIVE);
+    if (hFile != INVALID_HANDLE_VALUE)
+    {
+        rc = birdStatHandle2(hFile, pStat, NULL, pwszPath);
+        birdCloseFile(hFile);
+
+        if (rc || !pStat->st_ismountpoint)
+        { /* very likely */ }
+        else
+        {
+            /*
+             * If we hit a mount point (NTFS volume mounted under an empty NTFS directory),
+             * we should return information about what's mounted there rather than the
+             * directory it is mounted at as this is what UNIX does.
+             */
+            hFile = birdOpenFileExW(hRoot, pwszPath,
+                                    FILE_READ_ATTRIBUTES,
+                                    FILE_ATTRIBUTE_NORMAL,
+                                    FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                    FILE_OPEN,
+                                    FILE_OPEN_FOR_BACKUP_INTENT,
+                                    OBJ_CASE_INSENSITIVE);
+            if (hFile != INVALID_HANDLE_VALUE)
+            {
+                rc = birdStatHandle2(hFile, pStat, NULL, pwszPath);
+                pStat->st_ismountpoint = 2;
+                birdCloseFile(hFile);
+            }
+        }
+    }
+    else
+    {
+        /*
+         * On things like pagefile.sys we may get sharing violation.  We fall
+         * back on directory enumeration for dealing with that.
+         */
+        if (   errno == ETXTBSY
+            && wcschr(pwszPath, '*') == NULL /* Serious paranoia... */
+            && wcschr(pwszPath, '?') == NULL)
+        {
+            MY_UNICODE_STRING NameUniStr;
+            hFile = birdOpenParentDirW(hRoot, pwszPath,
+                                       FILE_READ_DATA | SYNCHRONIZE,
+                                       FILE_ATTRIBUTE_NORMAL,
+                                       FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                       FILE_OPEN,
+                                       FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+                                       OBJ_CASE_INSENSITIVE,
+                                       &NameUniStr);
+            if (hFile != INVALID_HANDLE_VALUE)
+            {
+                MY_FILE_ID_FULL_DIR_INFORMATION *pBuf;
+                ULONG               cbBuf = sizeof(*pBuf) + NameUniStr.MaximumLength + 1024;
+                MY_IO_STATUS_BLOCK  Ios;
+                MY_NTSTATUS         rcNt;
+
+                pBuf = (MY_FILE_ID_FULL_DIR_INFORMATION *)alloca(cbBuf);
+                Ios.u.Status    = -1;
+                Ios.Information = -1;
+                rcNt = g_pfnNtQueryDirectoryFile(hFile, NULL, NULL, NULL, &Ios, pBuf, cbBuf,
+                                                 MyFileIdFullDirectoryInformation, FALSE, &NameUniStr, TRUE);
+                if (MY_NT_SUCCESS(rcNt))
+                    rcNt = Ios.u.Status;
+                if (MY_NT_SUCCESS(rcNt))
+                {
+                    /*
+                     * Convert the data.
+                     */
+                    birdStatFillFromFileIdFullDirInfo(pStat, pBuf);
+
+                    /* Get the serial number, reusing the buffer from above. */
+                    rcNt = birdQueryVolumeDeviceNumber(hFile, (MY_FILE_FS_VOLUME_INFORMATION *)pBuf, cbBuf, &pStat->st_dev);
+                    if (MY_NT_SUCCESS(rcNt))
+                        rc = 0;
+                    else
+                        rc = birdSetErrnoFromNt(rcNt);
+                }
+
+                birdFreeNtPath(&NameUniStr);
+                birdCloseFile(hFile);
+
+                if (MY_NT_SUCCESS(rcNt))
+                    return 0;
+                birdSetErrnoFromNt(rcNt);
+            }
+        }
+        rc = -1;
+    }
+
+    return rc;
+}
+
+
+/**
+ * Implements UNIX fstat().
+ */
+int birdStatOnFd(int fd, BirdStat_T *pStat)
+{
+    int     rc;
+    HANDLE  hFile = (HANDLE)_get_osfhandle(fd);
+    if (hFile != INVALID_HANDLE_VALUE)
+    {
+        DWORD fFileType;
+
+        birdResolveImports();
+
+        SetLastError(NO_ERROR);
+        fFileType = GetFileType(hFile) & ~FILE_TYPE_REMOTE;
+        switch (fFileType)
+        {
+            case FILE_TYPE_DISK:
+                rc = birdStatHandle2(hFile, pStat, NULL, NULL);
+                break;
+
+            case FILE_TYPE_CHAR:
+            case FILE_TYPE_PIPE:
+                if (fFileType == FILE_TYPE_PIPE)
+                    pStat->st_mode          = S_IFIFO | 0666;
+                else
+                    pStat->st_mode          = S_IFCHR | 0666;
+                pStat->st_padding0[0]       = 0;
+                pStat->st_padding0[1]       = 0;
+                pStat->st_size              = 0;
+                pStat->st_atim.tv_sec       = 0;
+                pStat->st_atim.tv_nsec      = 0;
+                pStat->st_mtim.tv_sec       = 0;
+                pStat->st_mtim.tv_nsec      = 0;
+                pStat->st_ctim.tv_sec       = 0;
+                pStat->st_ctim.tv_nsec      = 0;
+                pStat->st_birthtim.tv_sec   = 0;
+                pStat->st_birthtim.tv_nsec  = 0;
+                pStat->st_ino               = 0;
+                pStat->st_dev               = 0;
+                pStat->st_rdev              = 0;
+                pStat->st_uid               = 0;
+                pStat->st_gid               = 0;
+                pStat->st_padding1          = 0;
+                pStat->st_attribs           = fFileType == FILE_TYPE_PIPE ? FILE_ATTRIBUTE_NORMAL : FILE_ATTRIBUTE_DEVICE;
+                pStat->st_blksize           = 512;
+                pStat->st_blocks            = 0;
+                if (fFileType == FILE_TYPE_PIPE)
+                {
+                    DWORD cbAvail;
+                    if (PeekNamedPipe(hFile, NULL, 0, NULL, &cbAvail, NULL))
+                        pStat->st_size = cbAvail;
+                }
+                rc = 0;
+                break;
+
+            case FILE_TYPE_UNKNOWN:
+            default:
+                if (GetLastError() == NO_ERROR)
+                    rc = birdSetErrnoToBadFileNo();
+                else
+                    rc = birdSetErrnoFromWin32(GetLastError());
+                break;
+        }
+    }
+    else
+        rc = -1;
+    return rc;
+}
+
+
+/**
+ * Special case that only gets the file size and nothing else.
+ */
+int birdStatOnFdJustSize(int fd, __int64 *pcbFile)
+{
+    int     rc;
+    HANDLE  hFile = (HANDLE)_get_osfhandle(fd);
+    if (hFile != INVALID_HANDLE_VALUE)
+    {
+        LARGE_INTEGER cbLocal;
+        if (GetFileSizeEx(hFile, &cbLocal))
+        {
+            *pcbFile = cbLocal.QuadPart;
+            rc = 0;
+        }
+        else
+        {
+            BirdStat_T Stat;
+            rc = birdStatOnFd(fd, &Stat);
+            if (rc == 0)
+                *pcbFile = Stat.st_size;
+        }
+    }
+    else
+        rc = -1;
+    return rc;
+}
+
+
+/**
+ * Implements UNIX stat().
+ */
+int birdStatFollowLink(const char *pszPath, BirdStat_T *pStat)
+{
+    return birdStatInternal(NULL, pszPath, pStat, 1 /*fFollow*/);
+}
+
+
+/**
+ * Implements UNIX stat().
+ */
+int birdStatFollowLinkW(const wchar_t *pwszPath, BirdStat_T *pStat)
+{
+    return birdStatInternalW(NULL, pwszPath, pStat, 1 /*fFollow*/);
+}
+
+
+/**
+ * Implements UNIX lstat().
+ */
+int birdStatOnLink(const char *pszPath, BirdStat_T *pStat)
+{
+    return birdStatInternal(NULL, pszPath, pStat, 0 /*fFollow*/);
+}
+
+
+/**
+ * Implements UNIX lstat().
+ */
+int birdStatOnLinkW(const wchar_t *pwszPath, BirdStat_T *pStat)
+{
+    return birdStatInternalW(NULL, pwszPath, pStat, 0 /*fFollow*/);
+}
+
+
+/**
+ * Implements an API like UNIX fstatat().
+ *
+ * @returns 0 on success, -1 and errno on failure.
+ * @param   hRoot               NT handle pwszPath is relative to.
+ * @param   pszPath             The path.
+ * @param   pStat               Where to return stats.
+ * @param   fFollowLink         Whether to follow links.
+ */
+int birdStatAt(HANDLE hRoot, const char *pszPath, BirdStat_T *pStat, int fFollowLink)
+{
+    return birdStatInternal(hRoot, pszPath, pStat, fFollowLink != 0);
+}
+
+
+/**
+ * Implements an API like UNIX fstatat().
+ *
+ * @returns 0 on success, -1 and errno on failure.
+ * @param   hRoot               NT handle pwszPath is relative to.
+ * @param   pwszPath            The path.
+ * @param   pStat               Where to return stats.
+ * @param   fFollowLink         Whether to follow links.
+ */
+int birdStatAtW(HANDLE hRoot, const wchar_t *pwszPath, BirdStat_T *pStat, int fFollowLink)
+{
+    return birdStatInternalW(hRoot, pwszPath, pStat, fFollowLink != 0);
+}
+
+
+/**
+ * Internal worker for birdStatModTimeOnly.
+ */
+static int birdStatOnlyInternal(const char *pszPath, int fFollowLink, MY_FILE_BASIC_INFORMATION *pBasicInfo)
+{
+    int rc;
+    HANDLE hFile = birdOpenFile(pszPath,
+                                FILE_READ_ATTRIBUTES,
+                                FILE_ATTRIBUTE_NORMAL,
+                                FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                                FILE_OPEN,
+                                FILE_OPEN_FOR_BACKUP_INTENT | (fFollowLink ? 0 : FILE_OPEN_REPARSE_POINT),
+                                OBJ_CASE_INSENSITIVE);
+    if (hFile != INVALID_HANDLE_VALUE)
+    {
+        MY_NTSTATUS         rcNt = 0;
+        MY_IO_STATUS_BLOCK  Ios;
+        Ios.Information = 0;
+        Ios.u.Status    = -1;
+
+        if (pBasicInfo)
+        {
+            rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, pBasicInfo, sizeof(*pBasicInfo), MyFileBasicInformation);
+            if (MY_NT_SUCCESS(rcNt))
+                rcNt = Ios.u.Status;
+        }
+        birdCloseFile(hFile);
+
+        if (MY_NT_SUCCESS(rcNt))
+            rc = 0;
+        else
+        {
+            birdSetErrnoFromNt(rcNt);
+            rc = -1;
+        }
+    }
+    else
+    {
+        //fprintf(stderr, "stat: %s -> %u\n", pszPath, GetLastError());
+
+        /* On things like pagefile.sys we may get sharing violation. */
+        if (GetLastError() == ERROR_SHARING_VIOLATION)
+        {
+            /** @todo Fall back on the parent directory enum if we run into a sharing
+             *        violation. */
+        }
+        rc = -1;
+    }
+    return rc;
+}
+
+
+/**
+ * Special function for getting the modification time.
+ */
+int birdStatModTimeOnly(const char *pszPath, BirdTimeSpec_T *pTimeSpec, int fFollowLink)
+{
+    /*
+     * Convert the path and call NtQueryFullAttributesFile.
+     *
+     * Note! NtQueryAttributesFile cannot be used as it only returns attributes.
+     */
+    MY_UNICODE_STRING  NtPath;
+
+    birdResolveImports();
+    if (birdDosToNtPath(pszPath, &NtPath) == 0)
+    {
+        MY_OBJECT_ATTRIBUTES                ObjAttr;
+        MY_FILE_NETWORK_OPEN_INFORMATION    Info;
+        MY_NTSTATUS                         rcNt;
+
+        memset(&Info, 0xfe, sizeof(Info));
+
+        MyInitializeObjectAttributes(&ObjAttr, &NtPath, OBJ_CASE_INSENSITIVE, NULL /*hRoot*/, NULL /*pSecAttr*/);
+        rcNt = g_pfnNtQueryFullAttributesFile(&ObjAttr, &Info);
+
+        birdFreeNtPath(&NtPath);
+        if (MY_NT_SUCCESS(rcNt))
+        {
+            birdNtTimeToTimeSpec(Info.LastWriteTime.QuadPart, pTimeSpec);
+
+            /* Do the trailing slash check. */
+            if (   (Info.FileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+                || !birdIsPathDirSpec(pszPath))
+            {
+                MY_FILE_BASIC_INFORMATION BasicInfo;
+                if (   !(Info.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
+                    || !fFollowLink)
+                    return 0;
+
+                /* Fallback on birdStatOnlyInternal to follow the reparse point.  */
+                if (!birdStatOnlyInternal(pszPath, fFollowLink, &BasicInfo))
+                {
+                    birdNtTimeToTimeSpec(BasicInfo.LastWriteTime.QuadPart, pTimeSpec);
+                    return 0;
+                }
+            }
+            else
+                errno = ENOTDIR;
+        }
+        else
+            birdSetErrnoFromNt(rcNt);
+    }
+    return -1;
+}
+
+/**
+ * Special function for getting the file mode.
+ */
+int birdStatModeOnly(const char *pszPath, unsigned __int16 *pMode, int fFollowLink)
+{
+    /*
+     * Convert the path and call NtQueryFullAttributesFile.
+     */
+    MY_UNICODE_STRING  NtPath;
+
+    birdResolveImports();
+    if (birdDosToNtPath(pszPath, &NtPath) == 0)
+    {
+        MY_OBJECT_ATTRIBUTES                ObjAttr;
+        MY_FILE_BASIC_INFORMATION           Info;
+        MY_NTSTATUS                         rcNt;
+
+        memset(&Info, 0xfe, sizeof(Info));
+
+        MyInitializeObjectAttributes(&ObjAttr, &NtPath, OBJ_CASE_INSENSITIVE, NULL /*hRoot*/, NULL /*pSecAttr*/);
+        rcNt = g_pfnNtQueryAttributesFile(&ObjAttr, &Info);
+
+        if (MY_NT_SUCCESS(rcNt))
+        {
+            unsigned __int8 isdirsymlink = 0;
+            unsigned __int8 ismountpoint = 0;
+            *pMode = birdFileInfoToMode(Info.FileAttributes, 0, pszPath, NtPath.Buffer, NtPath.Length,
+                                        &isdirsymlink, &ismountpoint);
+
+            /* Do the trailing slash check. */
+            if (   (Info.FileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+                || !birdIsPathDirSpec(pszPath))
+            {
+                if (   !(Info.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
+                    || !fFollowLink)
+                {
+                    birdFreeNtPath(&NtPath);
+                    return 0;
+                }
+
+                /* Fallback on birdStatOnlyInternal to follow the reparse point.  */
+                if (!birdStatOnlyInternal(pszPath, fFollowLink, &Info))
+                {
+                    *pMode = birdFileInfoToMode(Info.FileAttributes, 0, pszPath, NtPath.Buffer, NtPath.Length,
+                                                &isdirsymlink, &ismountpoint);
+                    birdFreeNtPath(&NtPath);
+                    return 0;
+                }
+            }
+            else
+                errno = ENOTDIR;
+        }
+        else
+            birdSetErrnoFromNt(rcNt);
+        birdFreeNtPath(&NtPath);
+    }
+    return -1;
+}
+
+
diff --git a/src/lib/nt/ntstat.h b/src/lib/nt/ntstat.h
new file mode 100644
index 0000000..52e41f3
--- /dev/null
+++ b/src/lib/nt/ntstat.h
@@ -0,0 +1,144 @@
+/* $Id: ntstat.h 3485 2020-09-21 12:25:08Z bird $ */
+/** @file
+ * MSC + NT stat, lstat and fstat implementation and wrappers.
+ */
+
+/*
+ * Copyright (c) 2005-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+#ifndef ___nt_ntstat_h
+#define ___nt_ntstat_h
+
+#include "nttypes.h"
+
+#include <sys/stat.h>
+#include <io.h>
+#include <direct.h>
+
+#undef stat
+#undef lstat
+#undef fstat
+
+
+/** The distance between the NT and unix epochs given in NT time (units of 100
+ *  ns). */
+#define BIRD_NT_EPOCH_OFFSET_UNIX_100NS 116444736000000000LL
+
+typedef struct BirdStat
+{
+    unsigned __int16    st_mode;
+    unsigned __int8     st_isdirsymlink; /**< Set if directory symlink. */
+    unsigned __int8     st_ismountpoint; /**< Set if mount point; 1 if not followed, 2 if followed (lstat & readdir only). */
+    unsigned __int16    st_padding0[2];
+    __int64             st_size;
+    BirdTimeSpec_T      st_atim;
+    BirdTimeSpec_T      st_mtim;
+    BirdTimeSpec_T      st_ctim;
+    BirdTimeSpec_T      st_birthtim;
+    unsigned __int64    st_ino;
+    unsigned __int64    st_dev;
+    unsigned __int32    st_nlink;
+    unsigned __int16    st_rdev;
+    __int16             st_uid;
+    __int16             st_gid;
+    unsigned __int16    st_padding1;
+    unsigned __int32    st_attribs;
+    unsigned __int32    st_blksize;
+    __int64             st_blocks;
+} BirdStat_T;
+
+#define BIRD_STAT_BLOCK_SIZE    512
+
+#define st_atime        st_atim.tv_sec
+#define st_ctime        st_ctim.tv_sec
+#define st_mtime        st_mtim.tv_sec
+#define st_birthtime    st_birthtim.tv_sec
+
+int birdStatFollowLink(const char *pszPath, BirdStat_T *pStat);
+int birdStatFollowLinkW(const wchar_t *pwszPath, BirdStat_T *pStat);
+int birdStatOnLink(const char *pszPath, BirdStat_T *pStat);
+int birdStatOnLinkW(const wchar_t *pwszPath, BirdStat_T *pStat);
+int birdStatAt(void *hRoot, const char *pszPath, BirdStat_T *pStat, int fFollowLink);
+int birdStatAtW(void *hRoot, const wchar_t *pwszPath, BirdStat_T *pStat, int fFollowLink);
+int birdStatOnFd(int fd, BirdStat_T *pStat);
+int birdStatOnFdJustSize(int fd, __int64 *pcbFile);
+int birdStatModTimeOnly(const char *pszPath, BirdTimeSpec_T *pTimeSpec, int fFollowLink);
+int birdStatModeOnly(const char *pszPath, unsigned __int16 *pMode, int fFollowLink);
+#ifdef ___nt_ntstuff_h
+int  birdStatHandle(HANDLE hFile, BirdStat_T *pStat, const char *pszPath);
+void birdStatFillFromFileIdFullDirInfo(BirdStat_T *pStat, MY_FILE_ID_FULL_DIR_INFORMATION const *pBuf);
+void birdStatFillFromFileIdBothDirInfo(BirdStat_T *pStat, MY_FILE_ID_BOTH_DIR_INFORMATION const *pBuf);
+void birdStatFillFromFileBothDirInfo(BirdStat_T *pStat, MY_FILE_BOTH_DIR_INFORMATION const *pBuf);
+MY_NTSTATUS birdQueryVolumeDeviceNumber(HANDLE hFile, MY_FILE_FS_VOLUME_INFORMATION *pVolInfo, size_t cbVolInfo,
+                                        unsigned __int64 *puDevNo);
+unsigned __int64 birdVolumeInfoToDeviceNumber(MY_FILE_FS_VOLUME_INFORMATION const *pVolInfo);
+#endif
+
+#define STAT_REDEFINED_ALREADY
+
+#define stat                            BirdStat
+#define BirdStat(a_pszPath, a_pStat)    birdStatFollowLink(a_pszPath, a_pStat)
+#define lstat(a_pszPath, a_pStat)       birdStatOnLink(a_pszPath, a_pStat)
+#define fstat(a_fd, a_pStat)            birdStatOnFd(a_fd, a_pStat)
+
+
+#ifndef _S_IFLNK
+# define _S_IFLNK       0xa000
+#endif
+#ifndef S_IFLNK
+# define S_IFLNK        _S_IFLNK
+#endif
+#ifndef S_IFIFO
+# define S_IFIFO        _S_IFIFO
+#endif
+
+#ifndef S_ISLNK
+# define S_ISLNK(m)     (((m) & _S_IFMT) == _S_IFLNK)
+#endif
+#ifndef S_ISDIR
+# define S_ISDIR(m)     (((m) & _S_IFMT) == _S_IFDIR)
+#endif
+#ifndef S_ISREG
+# define S_ISREG(m)     (((m) & _S_IFMT) == _S_IFREG)
+#endif
+
+#define	S_IRWXU         (_S_IREAD | _S_IWRITE | _S_IEXEC)
+#define	S_IXUSR         _S_IEXEC
+#define	S_IWUSR         _S_IWRITE
+#define	S_IRUSR         _S_IREAD
+#define S_IRWXG         0000070
+#define S_IRGRP	        0000040
+#define S_IWGRP	        0000020
+#define S_IXGRP         0000010
+#define S_IRWXO         0000007
+#define S_IROTH	        0000004
+#define S_IWOTH	        0000002
+#define S_IXOTH         0000001
+#define	S_ISUID         0004000
+#define	S_ISGID         0002000
+#define ALLPERMS        0000777
+
+#endif
+
diff --git a/src/lib/nt/ntstuff.h b/src/lib/nt/ntstuff.h
new file mode 100644
index 0000000..03439b4
--- /dev/null
+++ b/src/lib/nt/ntstuff.h
@@ -0,0 +1,573 @@
+/* $Id: ntstuff.h 3223 2018-03-31 02:29:56Z bird $ */
+/** @file
+ * Definitions, types, prototypes and globals for NT.
+ */
+
+/*
+ * Copyright (c) 2005-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+#ifndef ___nt_ntstuff_h
+#define ___nt_ntstuff_h
+
+#define timeval timeval_Windows
+#define WIN32_NO_STATUS
+#include <Windows.h>
+#include <winternl.h>
+#undef WIN32_NO_STATUS
+#include <ntstatus.h>
+#undef timeval
+
+#include <k/kTypes.h>
+
+
+/** @defgroup grp_nt_ntstuff NT Stuff
+ * @{ */
+
+typedef LONG MY_NTSTATUS;
+typedef ULONG MY_ACCESS_MASK;
+
+typedef struct MY_IO_STATUS_BLOCK
+{
+    union
+    {
+        MY_NTSTATUS     Status;
+        PVOID           Pointer;
+    } u;
+    ULONG_PTR           Information;
+} MY_IO_STATUS_BLOCK;
+
+typedef VOID WINAPI MY_IO_APC_ROUTINE(PVOID, MY_IO_STATUS_BLOCK *, ULONG);
+
+typedef struct MY_UNICODE_STRING
+{
+    USHORT              Length;
+    USHORT              MaximumLength;
+    PWSTR               Buffer;
+} MY_UNICODE_STRING;
+
+typedef struct MY_STRING
+{
+    USHORT              Length;
+    USHORT              MaximumLength;
+    PCHAR               Buffer;
+} MY_STRING;
+typedef MY_STRING MY_ANSI_STRING;
+
+typedef struct MY_CURDIR
+{
+    UNICODE_STRING      DosPath;
+    HANDLE              Handle;
+} MY_CURDIR;
+typedef MY_CURDIR *PMY_CURDIR;
+
+typedef struct MY_RTL_DRIVE_LETTER_CURDIR
+{
+    USHORT              Flags;
+    USHORT              Length;
+    ULONG               TimeStamp;
+    MY_ANSI_STRING      DosPath;
+} MY_RTL_DRIVE_LETTER_CURDIR;
+typedef MY_RTL_DRIVE_LETTER_CURDIR *PRTL_DRIVE_LETTER_CURDIR;
+
+typedef struct MY_RTL_USER_PROCESS_PARAMETERS
+{
+    ULONG               MaximumLength;
+    ULONG               Length;
+    ULONG               Flags;
+    ULONG               DebugFlags;
+    HANDLE              ConsoleHandle;
+    ULONG               ConsoleFlags;
+    HANDLE              StandardInput;
+    HANDLE              StandardOutput;
+    HANDLE              StandardError;
+    MY_CURDIR           CurrentDirectory;
+    MY_UNICODE_STRING   DllPath;
+    MY_UNICODE_STRING   ImagePathName;
+    MY_UNICODE_STRING   CommandLine;
+    PWSTR               Environment;
+    ULONG               StartingX;
+    ULONG               StartingY;
+    ULONG               CountX;
+    ULONG               CountY;
+    ULONG               CountCharsX;
+    ULONG               CountCharsY;
+    ULONG               FillAttribute;
+    ULONG               WindowFlags;
+    ULONG               ShowWindowFlags;
+    MY_UNICODE_STRING   WindowTitle;
+    MY_UNICODE_STRING   DesktopInfo;
+    MY_UNICODE_STRING   ShellInfo;
+    MY_UNICODE_STRING   RuntimeInfo;
+    MY_RTL_DRIVE_LETTER_CURDIR CurrentDirectories[0x20];
+    SIZE_T              EnvironmentSize;        /* >= Vista+ */
+    SIZE_T              EnvironmentVersion;     /* >= Windows 7. */
+    PVOID               PackageDependencyData;  /* >= Windows 8 or Windows 8.1. */
+    ULONG               ProcessGroupId;         /* >= Windows 8 or Windows 8.1. */
+} MY_RTL_USER_PROCESS_PARAMETERS;
+typedef MY_RTL_USER_PROCESS_PARAMETERS *PMY_RTL_USER_PROCESS_PARAMETERS;
+
+typedef struct MY_OBJECT_ATTRIBUTES
+{
+    ULONG               Length;
+    HANDLE              RootDirectory;
+    MY_UNICODE_STRING  *ObjectName;
+    ULONG               Attributes;
+    PVOID               SecurityDescriptor;
+    PVOID               SecurityQualityOfService;
+} MY_OBJECT_ATTRIBUTES;
+
+#define MyInitializeObjectAttributes(a_pAttr, a_pName, a_fAttribs, a_hRoot, a_pSecDesc) \
+    do { \
+        (a_pAttr)->Length                   = sizeof(MY_OBJECT_ATTRIBUTES); \
+        (a_pAttr)->RootDirectory            = (a_hRoot); \
+        (a_pAttr)->Attributes               = (a_fAttribs); \
+        (a_pAttr)->ObjectName               = (a_pName); \
+        (a_pAttr)->SecurityDescriptor       = (a_pSecDesc); \
+        (a_pAttr)->SecurityQualityOfService = NULL; \
+    } while (0)
+
+
+
+typedef struct MY_FILE_BASIC_INFORMATION
+{
+    LARGE_INTEGER   CreationTime;
+    LARGE_INTEGER   LastAccessTime;
+    LARGE_INTEGER   LastWriteTime;
+    LARGE_INTEGER   ChangeTime;
+    ULONG           FileAttributes;
+} MY_FILE_BASIC_INFORMATION;
+
+typedef struct MY_FILE_STANDARD_INFORMATION
+{
+    LARGE_INTEGER   AllocationSize;
+    LARGE_INTEGER   EndOfFile;
+    ULONG           NumberOfLinks;
+    BOOLEAN         DeletePending;
+    BOOLEAN         Directory;
+} MY_FILE_STANDARD_INFORMATION;
+
+typedef struct MY_FILE_NETWORK_OPEN_INFORMATION
+{
+    LARGE_INTEGER   CreationTime;
+    LARGE_INTEGER   LastAccessTime;
+    LARGE_INTEGER   LastWriteTime;
+    LARGE_INTEGER   ChangeTime;
+    LARGE_INTEGER   AllocationSize;
+    LARGE_INTEGER   EndOfFile;
+    ULONG           FileAttributes;
+    ULONG           AlignmentPadding;
+} MY_FILE_NETWORK_OPEN_INFORMATION;
+
+typedef struct MY_FILE_INTERNAL_INFORMATION
+{
+    LARGE_INTEGER   IndexNumber;
+} MY_FILE_INTERNAL_INFORMATION;
+
+typedef struct MY_FILE_EA_INFORMATION
+{
+    ULONG           EaSize;
+} MY_FILE_EA_INFORMATION;
+
+typedef struct MY_FILE_ACCESS_INFORMATION
+{
+    ACCESS_MASK     AccessFlags;
+} MY_FILE_ACCESS_INFORMATION;
+
+typedef struct MY_FILE_POSITION_INFORMATION
+{
+    LARGE_INTEGER   CurrentByteOffset;
+} MY_FILE_POSITION_INFORMATION;
+
+typedef struct MY_FILE_MODE_INFORMATION
+{
+    ULONG           Mode;
+} MY_FILE_MODE_INFORMATION;
+
+typedef struct MY_FILE_ALIGNMENT_INFORMATION
+{
+    ULONG           AlignmentRequirement;
+} MY_FILE_ALIGNMENT_INFORMATION;
+
+typedef struct MY_FILE_NAME_INFORMATION
+{
+    ULONG           FileNameLength;
+    WCHAR           FileName[1];
+} MY_FILE_NAME_INFORMATION;
+
+typedef struct MY_FILE_ALL_INFORMATION
+{
+    MY_FILE_BASIC_INFORMATION       BasicInformation;
+    MY_FILE_STANDARD_INFORMATION    StandardInformation;
+    MY_FILE_INTERNAL_INFORMATION    InternalInformation;
+    MY_FILE_EA_INFORMATION          EaInformation;
+    MY_FILE_ACCESS_INFORMATION      AccessInformation;
+    MY_FILE_POSITION_INFORMATION    PositionInformation;
+    MY_FILE_MODE_INFORMATION        ModeInformation;
+    MY_FILE_ALIGNMENT_INFORMATION   AlignmentInformation;
+    MY_FILE_NAME_INFORMATION        NameInformation;
+} MY_FILE_ALL_INFORMATION;
+
+typedef struct MY_FILE_ATTRIBUTE_TAG_INFORMATION
+{
+    ULONG           FileAttributes;
+    ULONG           ReparseTag;
+} MY_FILE_ATTRIBUTE_TAG_INFORMATION;
+
+
+typedef struct MY_FILE_NAMES_INFORMATION
+{
+    ULONG           NextEntryOffset;
+    ULONG           FileIndex;
+    ULONG           FileNameLength;
+    WCHAR           FileName[1];
+} MY_FILE_NAMES_INFORMATION;
+/** The sizeof(MY_FILE_NAMES_INFORMATION) without the FileName. */
+#define MIN_SIZEOF_MY_FILE_NAMES_INFORMATION  (4 + 4 + 4)
+
+
+typedef struct MY_FILE_ID_FULL_DIR_INFORMATION
+{
+    ULONG           NextEntryOffset;
+    ULONG           FileIndex;
+    LARGE_INTEGER   CreationTime;
+    LARGE_INTEGER   LastAccessTime;
+    LARGE_INTEGER   LastWriteTime;
+    LARGE_INTEGER   ChangeTime;
+    LARGE_INTEGER   EndOfFile;
+    LARGE_INTEGER   AllocationSize;
+    ULONG           FileAttributes;
+    ULONG           FileNameLength;
+    ULONG           EaSize;
+    LARGE_INTEGER   FileId;
+    WCHAR           FileName[1];
+} MY_FILE_ID_FULL_DIR_INFORMATION;
+/** The sizeof(MY_FILE_NAMES_INFORMATION) without the FileName. */
+#define MIN_SIZEOF_MY_FILE_ID_FULL_DIR_INFORMATION  ( (size_t)&((MY_FILE_ID_FULL_DIR_INFORMATION *)0)->FileName )
+
+typedef struct MY_FILE_BOTH_DIR_INFORMATION
+{
+    ULONG           NextEntryOffset;
+    ULONG           FileIndex;
+    LARGE_INTEGER   CreationTime;
+    LARGE_INTEGER   LastAccessTime;
+    LARGE_INTEGER   LastWriteTime;
+    LARGE_INTEGER   ChangeTime;
+    LARGE_INTEGER   EndOfFile;
+    LARGE_INTEGER   AllocationSize;
+    ULONG           FileAttributes;
+    ULONG           FileNameLength;
+    ULONG           EaSize;
+    CCHAR           ShortNameLength;
+    WCHAR           ShortName[12];
+    WCHAR           FileName[1];
+} MY_FILE_BOTH_DIR_INFORMATION;
+/** The sizeof(MY_FILE_BOTH_DIR_INFORMATION) without the FileName. */
+#define MIN_SIZEOF_MY_FILE_BOTH_DIR_INFORMATION  ( (size_t)&((MY_FILE_BOTH_DIR_INFORMATION *)0)->FileName )
+
+
+typedef struct MY_FILE_ID_BOTH_DIR_INFORMATION
+{
+    ULONG           NextEntryOffset;
+    ULONG           FileIndex;
+    LARGE_INTEGER   CreationTime;
+    LARGE_INTEGER   LastAccessTime;
+    LARGE_INTEGER   LastWriteTime;
+    LARGE_INTEGER   ChangeTime;
+    LARGE_INTEGER   EndOfFile;
+    LARGE_INTEGER   AllocationSize;
+    ULONG           FileAttributes;
+    ULONG           FileNameLength;
+    ULONG           EaSize;
+    CCHAR           ShortNameLength;
+    WCHAR           ShortName[12];
+    LARGE_INTEGER   FileId;
+    WCHAR           FileName[1];
+} MY_FILE_ID_BOTH_DIR_INFORMATION;
+/** The sizeof(MY_FILE_NAMES_INFORMATION) without the FileName. */
+#define MIN_SIZEOF_MY_FILE_ID_BOTH_DIR_INFORMATION  ( (size_t)&((MY_FILE_ID_BOTH_DIR_INFORMATION *)0)->FileName )
+
+
+typedef struct MY_FILE_DISPOSITION_INFORMATION
+{
+    BOOLEAN         DeleteFile;
+} MY_FILE_DISPOSITION_INFORMATION;
+
+
+typedef enum MY_FILE_INFORMATION_CLASS
+{
+    MyFileDirectoryInformation                     = 1,
+    MyFileFullDirectoryInformation,             /* = 2  */
+    MyFileBothDirectoryInformation,             /* = 3  */
+    MyFileBasicInformation,                     /* = 4  */
+    MyFileStandardInformation,                  /* = 5  */
+    MyFileInternalInformation,                  /* = 6  */
+    MyFileEaInformation,                        /* = 7  */
+    MyFileAccessInformation,                    /* = 8  */
+    MyFileNameInformation,                      /* = 9  */
+    MyFileRenameInformation,                    /* = 10 */
+    MyFileLinkInformation,                      /* = 11 */
+    MyFileNamesInformation,                     /* = 12 */
+    MyFileDispositionInformation,               /* = 13 */
+    MyFilePositionInformation,                  /* = 14 */
+    MyFileFullEaInformation,                    /* = 15 */
+    MyFileModeInformation,                      /* = 16 */
+    MyFileAlignmentInformation,                 /* = 17 */
+    MyFileAllInformation,                       /* = 18 */
+    MyFileAllocationInformation,                /* = 19 */
+    MyFileEndOfFileInformation,                 /* = 20 */
+    MyFileAlternateNameInformation,             /* = 21 */
+    MyFileStreamInformation,                    /* = 22 */
+    MyFilePipeInformation,                      /* = 23 */
+    MyFilePipeLocalInformation,                 /* = 24 */
+    MyFilePipeRemoteInformation,                /* = 25 */
+    MyFileMailslotQueryInformation,             /* = 26 */
+    MyFileMailslotSetInformation,               /* = 27 */
+    MyFileCompressionInformation,               /* = 28 */
+    MyFileObjectIdInformation,                  /* = 29 */
+    MyFileCompletionInformation,                /* = 30 */
+    MyFileMoveClusterInformation,               /* = 31 */
+    MyFileQuotaInformation,                     /* = 32 */
+    MyFileReparsePointInformation,              /* = 33 */
+    MyFileNetworkOpenInformation,               /* = 34 */
+    MyFileAttributeTagInformation,              /* = 35 */
+    MyFileTrackingInformation,                  /* = 36 */
+    MyFileIdBothDirectoryInformation,           /* = 37 */
+    MyFileIdFullDirectoryInformation,           /* = 38 */
+    MyFileValidDataLengthInformation,           /* = 39 */
+    MyFileShortNameInformation,                 /* = 40 */
+    MyFileIoCompletionNotificationInformation,  /* = 41 */
+    MyFileIoStatusBlockRangeInformation,        /* = 42 */
+    MyFileIoPriorityHintInformation,            /* = 43 */
+    MyFileSfioReserveInformation,               /* = 44 */
+    MyFileSfioVolumeInformation,                /* = 45 */
+    MyFileHardLinkInformation,                  /* = 46 */
+    MyFileProcessIdsUsingFileInformation,       /* = 47 */
+    MyFileNormalizedNameInformation,            /* = 48 */
+    MyFileNetworkPhysicalNameInformation,       /* = 49 */
+    MyFileIdGlobalTxDirectoryInformation,       /* = 50 */
+    MyFileIsRemoteDeviceInformation,            /* = 51 */
+    MyFileAttributeCacheInformation,            /* = 52 */
+    MyFileNumaNodeInformation,                  /* = 53 */
+    MyFileStandardLinkInformation,              /* = 54 */
+    MyFileRemoteProtocolInformation,            /* = 55 */
+    MyFileMaximumInformation
+} MY_FILE_INFORMATION_CLASS;
+
+
+typedef struct MY_FILE_FS_VOLUME_INFORMATION
+{
+    LARGE_INTEGER   VolumeCreationTime;
+    ULONG           VolumeSerialNumber;
+    ULONG           VolumeLabelLength;
+    BOOLEAN         SupportsObjects;
+    WCHAR           VolumeLabel[1];
+} MY_FILE_FS_VOLUME_INFORMATION;
+
+typedef struct _MY_FILE_FS_ATTRIBUTE_INFORMATION
+{
+    ULONG           FileSystemAttributes;
+    LONG            MaximumComponentNameLength;
+    ULONG           FileSystemNameLength;
+    WCHAR           FileSystemName[1];
+} MY_FILE_FS_ATTRIBUTE_INFORMATION;
+
+typedef enum MY_FSINFOCLASS
+{
+    MyFileFsVolumeInformation                      = 1,
+    MyFileFsLabelInformation,                   /* = 2  */
+    MyFileFsSizeInformation,                    /* = 3  */
+    MyFileFsDeviceInformation,                  /* = 4  */
+    MyFileFsAttributeInformation,               /* = 5  */
+    MyFileFsControlInformation,                 /* = 6  */
+    MyFileFsFullSizeInformation,                /* = 7  */
+    MyFileFsObjectIdInformation,                /* = 8  */
+    MyFileFsDriverPathInformation,              /* = 9  */
+    MyFileFsVolumeFlagsInformation,             /* = 10 */
+    MyFileFsMaximumInformation
+} MY_FS_INFORMATION_CLASS;
+
+
+typedef struct MY_RTLP_CURDIR_REF
+{
+    LONG            RefCount;
+    HANDLE          Handle;
+} MY_RTLP_CURDIR_REF;
+
+typedef struct MY_RTL_RELATIVE_NAME_U
+{
+    MY_UNICODE_STRING   RelativeName;
+    HANDLE              ContainingDirectory;
+    MY_RTLP_CURDIR_REF  CurDirRef;
+} MY_RTL_RELATIVE_NAME_U;
+
+
+#ifndef OBJ_INHERIT
+# define OBJ_INHERIT                        0x00000002U
+# define OBJ_PERMANENT                      0x00000010U
+# define OBJ_EXCLUSIVE                      0x00000020U
+# define OBJ_CASE_INSENSITIVE               0x00000040U
+# define OBJ_OPENIF                         0x00000080U
+# define OBJ_OPENLINK                       0x00000100U
+# define OBJ_KERNEL_HANDLE                  0x00000200U
+# define OBJ_FORCE_ACCESS_CHECK             0x00000400U
+# define OBJ_VALID_ATTRIBUTES               0x000007f2U
+#endif
+
+#ifndef FILE_OPEN
+# define FILE_SUPERSEDE                     0x00000000U
+# define FILE_OPEN                          0x00000001U
+# define FILE_CREATE                        0x00000002U
+# define FILE_OPEN_IF                       0x00000003U
+# define FILE_OVERWRITE                     0x00000004U
+# define FILE_OVERWRITE_IF                  0x00000005U
+# define FILE_MAXIMUM_DISPOSITION           0x00000005U
+#endif
+
+#ifndef FILE_DIRECTORY_FILE
+# define FILE_DIRECTORY_FILE                0x00000001U
+# define FILE_WRITE_THROUGH                 0x00000002U
+# define FILE_SEQUENTIAL_ONLY               0x00000004U
+# define FILE_NO_INTERMEDIATE_BUFFERING     0x00000008U
+# define FILE_SYNCHRONOUS_IO_ALERT          0x00000010U
+# define FILE_SYNCHRONOUS_IO_NONALERT       0x00000020U
+# define FILE_NON_DIRECTORY_FILE            0x00000040U
+# define FILE_CREATE_TREE_CONNECTION        0x00000080U
+# define FILE_COMPLETE_IF_OPLOCKED          0x00000100U
+# define FILE_NO_EA_KNOWLEDGE               0x00000200U
+# define FILE_OPEN_REMOTE_INSTANCE          0x00000400U
+# define FILE_RANDOM_ACCESS                 0x00000800U
+# define FILE_DELETE_ON_CLOSE               0x00001000U
+# define FILE_OPEN_BY_FILE_ID               0x00002000U
+# define FILE_OPEN_FOR_BACKUP_INTENT        0x00004000U
+# define FILE_NO_COMPRESSION                0x00008000U
+# define FILE_RESERVE_OPFILTER              0x00100000U
+# define FILE_OPEN_REPARSE_POINT            0x00200000U
+# define FILE_OPEN_NO_RECALL                0x00400000U
+# define FILE_OPEN_FOR_FREE_SPACE_QUERY     0x00800000U
+#endif
+
+#ifndef DUPLICATE_CLOSE_SOURCE /* For the misnomer NtDuplicateObject. */
+# define DUPLICATE_CLOSE_SOURCE             0x00000001U
+# define DUPLICATE_SAME_ACCESS              0x00000002U
+#endif
+#ifndef DUPLICATE_SAME_ATTRIBUTES
+# define DUPLICATE_SAME_ATTRIBUTES          0x00000004U
+#endif
+
+
+/** @name NT status codes and associated macros.
+ * @{ */
+#define MY_NT_SUCCESS(a_ntRc)               ((MY_NTSTATUS)(a_ntRc) >= 0)
+#define MY_NT_FAILURE(a_ntRc)               ((MY_NTSTATUS)(a_ntRc) <  0)
+#define MY_STATUS_NO_MORE_FILES             ((MY_NTSTATUS)0x80000006)
+#define MY_STATUS_OBJECT_NAME_INVALID       ((MY_NTSTATUS)0xc0000033)
+#define MY_STATUS_OBJECT_NAME_NOT_FOUND     ((MY_NTSTATUS)0xc0000034)
+#define MY_STATUS_OBJECT_PATH_INVALID       ((MY_NTSTATUS)0xc0000039)
+#define MY_STATUS_OBJECT_PATH_NOT_FOUND     ((MY_NTSTATUS)0xc000003a)
+#define MY_STATUS_OBJECT_PATH_SYNTAX_BAD    ((MY_NTSTATUS)0xc000003b)
+/** @}  */
+
+/** The pseudohandle for the current process. */
+#define MY_NT_CURRENT_PROCESS               ((HANDLE)~(uintptr_t)0)
+/** The pseudohandle for the current thread. */
+#define MY_NT_CURRENT_THREAD                ((HANDLE)~(uintptr_t)1)
+
+typedef struct MY_CLIENT_ID
+{
+    HANDLE UniqueProcess;
+    HANDLE UniqueThread;
+} MY_CLIENT_ID;
+
+/** Partial TEB.   */
+typedef struct MY_PARTIAL_TEB
+{
+    NT_TIB          NtTib;
+    PVOID           EnvironmentPointer;
+    MY_CLIENT_ID    ClientId;
+    PVOID           ActiveRpcHandle;
+    PVOID           ThreadLocalStoragePointer;
+    PPEB            ProcessEnvironmentBlock;
+    KU32            LastErrorValue;
+    KU32            CountOfOwnedCriticalSections;
+    PVOID           CsrClientThread;
+    PVOID           Win32ThreadInfo;
+} MY_PARTIAL_TEB;
+
+/** Internal macro for reading uintptr_t sized TEB members. */
+#if K_ARCH == K_ARCH_AMD64
+# define MY_NT_READ_TEB_WORKER(a_offTebMember) ( __readgsqword(a_offTebMember) )
+#elif K_ARCH == K_ARCH_X86_32
+# define MY_NT_READ_TEB_WORKER(a_offTebMember) ( __readfsdword(a_offTebMember) )
+#else
+# error "Port me!"
+#endif
+/** Get the PEB pointer.
+ * @remark Needs stddef.h. */
+#define MY_NT_CURRENT_PEB()  ( (PPEB)MY_NT_READ_TEB_WORKER(offsetof(MY_PARTIAL_TEB, ProcessEnvironmentBlock)) )
+/** Get the TEB pointer.
+ * @remark Needs stddef.h. */
+#define MY_NT_CURRENT_TEB()  ( (PTEB)MY_NT_READ_TEB_WORKER(offsetof(NT_TIB, Self)) )
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+extern MY_NTSTATUS (WINAPI * g_pfnNtClose)(HANDLE);
+extern MY_NTSTATUS (WINAPI * g_pfnNtCreateFile)(PHANDLE, MY_ACCESS_MASK, MY_OBJECT_ATTRIBUTES *, MY_IO_STATUS_BLOCK *,
+                                                PLARGE_INTEGER, ULONG, ULONG, ULONG, ULONG, PVOID, ULONG);
+extern MY_NTSTATUS (WINAPI * g_pfnNtDeleteFile)(MY_OBJECT_ATTRIBUTES *);
+extern MY_NTSTATUS (WINAPI * g_pfnNtDuplicateObject)(HANDLE hSrcProc, HANDLE hSrc, HANDLE hDstProc, HANDLE *phRet,
+                                                     MY_ACCESS_MASK fDesiredAccess, ULONG fAttribs, ULONG fOptions);
+extern MY_NTSTATUS (WINAPI * g_pfnNtReadFile)(HANDLE hFile, HANDLE hEvent, MY_IO_APC_ROUTINE *pfnApc, PVOID pvApcCtx,
+                                              MY_IO_STATUS_BLOCK *, PVOID pvBuf, ULONG cbToRead, PLARGE_INTEGER poffFile,
+                                              PULONG  puKey);
+extern MY_NTSTATUS (WINAPI * g_pfnNtQueryInformationFile)(HANDLE, MY_IO_STATUS_BLOCK *,
+                                                          PVOID, LONG, MY_FILE_INFORMATION_CLASS);
+extern MY_NTSTATUS (WINAPI * g_pfnNtQueryVolumeInformationFile)(HANDLE, MY_IO_STATUS_BLOCK *,
+                                                                PVOID, LONG, MY_FS_INFORMATION_CLASS);
+extern MY_NTSTATUS (WINAPI * g_pfnNtQueryDirectoryFile)(HANDLE, HANDLE, MY_IO_APC_ROUTINE *, PVOID, MY_IO_STATUS_BLOCK *,
+                                                        PVOID, ULONG, MY_FILE_INFORMATION_CLASS, BOOLEAN,
+                                                        MY_UNICODE_STRING *, BOOLEAN);
+extern MY_NTSTATUS (WINAPI * g_pfnNtQueryAttributesFile)(MY_OBJECT_ATTRIBUTES *, MY_FILE_BASIC_INFORMATION *);
+extern MY_NTSTATUS (WINAPI * g_pfnNtQueryFullAttributesFile)(MY_OBJECT_ATTRIBUTES *, MY_FILE_NETWORK_OPEN_INFORMATION *);
+extern MY_NTSTATUS (WINAPI * g_pfnNtSetInformationFile)(HANDLE, MY_IO_STATUS_BLOCK *, PVOID, LONG, MY_FILE_INFORMATION_CLASS);
+extern BOOLEAN     (WINAPI * g_pfnRtlDosPathNameToNtPathName_U)(PCWSTR, MY_UNICODE_STRING *, PCWSTR *, MY_RTL_RELATIVE_NAME_U *);
+extern MY_NTSTATUS (WINAPI * g_pfnRtlAnsiStringToUnicodeString)(MY_UNICODE_STRING *, MY_ANSI_STRING const *, BOOLEAN);
+extern MY_NTSTATUS (WINAPI * g_pfnRtlUnicodeStringToAnsiString)(MY_ANSI_STRING *, MY_UNICODE_STRING *, BOOLEAN);
+extern BOOLEAN     (WINAPI * g_pfnRtlEqualUnicodeString)(MY_UNICODE_STRING const *pUniStr1, MY_UNICODE_STRING const *pUniStr2,
+                                                         BOOLEAN fCaseInsensitive);
+extern BOOLEAN     (WINAPI * g_pfnRtlEqualString)(MY_ANSI_STRING const *pAnsiStr1, MY_ANSI_STRING const *pAnsiStr2,
+                                                  BOOLEAN fCaseInsensitive);
+extern UCHAR       (WINAPI * g_pfnRtlUpperChar)(UCHAR uch);
+extern ULONG       (WINAPI * g_pfnRtlNtStatusToDosError)(MY_NTSTATUS rcNt);
+extern VOID        (WINAPI * g_pfnRtlAcquirePebLock)(VOID);
+extern VOID        (WINAPI * g_pfnRtlReleasePebLock)(VOID);
+
+
+/** @} */
+
+#endif
+
diff --git a/src/lib/nt/nttypes.h b/src/lib/nt/nttypes.h
new file mode 100644
index 0000000..fe669c8
--- /dev/null
+++ b/src/lib/nt/nttypes.h
@@ -0,0 +1,55 @@
+/* $Id: nttypes.h 3060 2017-09-21 15:11:07Z bird $ */
+/** @file
+ * MSC + NT basic & common types, various definitions.
+ */
+
+/*
+ * Copyright (c) 2005-2017 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+#ifndef ___nt_nttypes_h
+#define ___nt_nttypes_h
+
+#include <sys/types.h>
+
+typedef struct BirdTimeVal
+{
+    __int64       tv_sec;
+    __int32       tv_usec;
+    __int32       tv_padding0;
+} BirdTimeVal_T;
+
+typedef struct BirdTimeSpec
+{
+    __int64       tv_sec;
+    __int32       tv_nsec;
+    __int32       tv_padding0;
+} BirdTimeSpec_T;
+
+/** The distance between the NT and unix epochs given in NT time (units of 100
+ *  ns). */
+#define BIRD_NT_EPOCH_OFFSET_UNIX_100NS 116444736000000000LL
+
+#endif
+
diff --git a/src/lib/nt/ntunlink.c b/src/lib/nt/ntunlink.c
new file mode 100644
index 0000000..8d037d5
--- /dev/null
+++ b/src/lib/nt/ntunlink.c
@@ -0,0 +1,240 @@
+/* $Id: ntunlink.c 3504 2021-12-15 22:50:14Z bird $ */
+/** @file
+ * MSC + NT unlink and variations.
+ */
+
+/*
+ * Copyright (c) 2005-2017 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "ntunlink.h"
+
+#include "ntstuff.h"
+#include "nthlp.h"
+
+
+static MY_NTSTATUS birdMakeWritable(HANDLE hRoot, MY_UNICODE_STRING *pNtPath)
+{
+    MY_NTSTATUS rcNt;
+    HANDLE      hFile;
+
+    rcNt = birdOpenFileUniStr(hRoot,
+                              pNtPath,
+                              FILE_WRITE_ATTRIBUTES | FILE_READ_ATTRIBUTES | SYNCHRONIZE,
+                              FILE_ATTRIBUTE_NORMAL,
+                              FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
+                              FILE_OPEN,
+                              FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
+                              OBJ_CASE_INSENSITIVE,
+                              &hFile);
+    if (MY_NT_SUCCESS(rcNt))
+    {
+        MY_FILE_BASIC_INFORMATION   BasicInfo;
+        MY_IO_STATUS_BLOCK          Ios;
+        DWORD                       dwAttr;
+
+        Ios.Information = -1;
+        Ios.u.Status    = -1;
+        memset(&BasicInfo, 0, sizeof(BasicInfo));
+        rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, &BasicInfo, sizeof(BasicInfo), MyFileBasicInformation);
+
+        if (MY_NT_SUCCESS(rcNt) && MY_NT_SUCCESS(Ios.u.Status) && BasicInfo.FileAttributes != FILE_ATTRIBUTE_READONLY)
+            dwAttr = BasicInfo.FileAttributes & ~FILE_ATTRIBUTE_READONLY;
+        else
+            dwAttr = FILE_ATTRIBUTE_NORMAL;
+        memset(&BasicInfo, 0, sizeof(BasicInfo));
+        BasicInfo.FileAttributes = dwAttr;
+
+        Ios.Information = -1;
+        Ios.u.Status    = -1;
+        rcNt = g_pfnNtSetInformationFile(hFile, &Ios, &BasicInfo, sizeof(BasicInfo), MyFileBasicInformation);
+
+        birdCloseFile(hFile);
+    }
+
+    return rcNt;
+}
+
+
+static int birdUnlinkInternal(HANDLE hRoot, const char *pszFile, const wchar_t *pwszFile, int fReadOnlyToo, int fFast)
+{
+    MY_UNICODE_STRING   NtPath;
+    int                 rc;
+
+    if (hRoot == INVALID_HANDLE_VALUE)
+        hRoot = NULL;
+    if (hRoot == NULL)
+    {
+        if (pwszFile)
+            rc = birdDosToNtPathW(pwszFile, &NtPath);
+        else
+            rc = birdDosToNtPath(pszFile, &NtPath);
+    }
+    else
+    {
+        if (pwszFile)
+            rc = birdDosToRelativeNtPathW(pwszFile, &NtPath);
+        else
+            rc = birdDosToRelativeNtPath(pszFile, &NtPath);
+    }
+    if (rc == 0)
+    {
+        MY_NTSTATUS rcNt;
+        if (fFast)
+        {
+            /* This uses FILE_DELETE_ON_CLOSE. Probably only suitable when in a hurry... */
+            MY_OBJECT_ATTRIBUTES ObjAttr;
+            MyInitializeObjectAttributes(&ObjAttr, &NtPath, OBJ_CASE_INSENSITIVE, hRoot, NULL /*pSecAttr*/);
+            rcNt = g_pfnNtDeleteFile(&ObjAttr);
+
+            /* In case some file system does things differently than NTFS. */
+            if (rcNt == STATUS_CANNOT_DELETE && fReadOnlyToo)
+            {
+                birdMakeWritable(hRoot, &NtPath);
+                rcNt = g_pfnNtDeleteFile(&ObjAttr);
+            }
+        }
+        else
+        {
+            /* Use the set information stuff. Probably more reliable. */
+            HANDLE hFile;
+            for (;;)
+            {
+                rcNt = birdOpenFileUniStr(hRoot,
+                                          &NtPath,
+                                          DELETE | SYNCHRONIZE,
+                                          FILE_ATTRIBUTE_NORMAL,
+                                          FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
+                                          FILE_OPEN,
+                                          FILE_OPEN_FOR_BACKUP_INTENT | FILE_OPEN_REPARSE_POINT,
+                                          OBJ_CASE_INSENSITIVE,
+                                          &hFile);
+                if (MY_NT_SUCCESS(rcNt))
+                {
+                    MY_FILE_DISPOSITION_INFORMATION DispInfo;
+                    MY_IO_STATUS_BLOCK              Ios;
+
+                    DispInfo.DeleteFile = TRUE;
+
+                    Ios.Information = -1;
+                    Ios.u.Status    = -1;
+
+                    rcNt = g_pfnNtSetInformationFile(hFile, &Ios, &DispInfo, sizeof(DispInfo), MyFileDispositionInformation);
+
+                    birdCloseFile(hFile);
+                }
+                if (rcNt != STATUS_CANNOT_DELETE || !fReadOnlyToo)
+                    break;
+
+                fReadOnlyToo = 0;
+                birdMakeWritable(hRoot, &NtPath);
+            }
+        }
+
+        birdFreeNtPath(&NtPath);
+
+        if (MY_NT_SUCCESS(rcNt))
+            rc = 0;
+        else
+            rc = birdSetErrnoFromNt(rcNt);
+    }
+    return rc;
+}
+
+
+int birdUnlink(const char *pszFile)
+{
+    return birdUnlinkInternal(NULL /*hRoot*/, pszFile, NULL /*pwszFile*/, 0 /*fReadOnlyToo*/, 0 /*fFast*/);
+}
+
+
+int birdUnlinkW(const wchar_t *pwszFile)
+{
+    return birdUnlinkInternal(NULL /*hRoot*/, NULL /*pwszFile*/, pwszFile, 0 /*fReadOnlyToo*/, 0 /*fFast*/);
+}
+
+
+int birdUnlinkEx(void *hRoot, const char *pszFile)
+{
+    return birdUnlinkInternal((HANDLE)hRoot, pszFile, NULL /*pwszFile*/, 0 /*fReadOnlyToo*/, 0 /*fFast*/);
+}
+
+
+int birdUnlinkExW(void *hRoot, const wchar_t *pwszFile)
+{
+    return birdUnlinkInternal((HANDLE)hRoot, NULL /*pszFile*/, pwszFile, 0 /*fReadOnlyToo*/, 0 /*fFast*/);
+}
+
+
+int birdUnlinkForced(const char *pszFile)
+{
+    return birdUnlinkInternal(NULL /*hRoot*/, pszFile, NULL /*pwszFile*/, 1 /*fReadOnlyToo*/, 0 /*fFast*/);
+}
+
+
+int birdUnlinkForcedW(const wchar_t *pwszFile)
+{
+    return birdUnlinkInternal(NULL /*hRoot*/, NULL /*pszFile*/, pwszFile, 1 /*fReadOnlyToo*/, 0 /*fFast*/);
+}
+
+
+int birdUnlinkForcedEx(void *hRoot, const char *pszFile)
+{
+    return birdUnlinkInternal((HANDLE)hRoot, pszFile, NULL /*pwszFile*/, 1 /*fReadOnlyToo*/, 0 /*fFast*/);
+}
+
+
+int birdUnlinkForcedExW(void *hRoot, const wchar_t *pwszFile)
+{
+    return birdUnlinkInternal((HANDLE)hRoot, NULL /*pszFile*/, pwszFile, 1 /*fReadOnlyToo*/, 0 /*fFast*/);
+}
+
+
+int birdUnlinkForcedFast(const char *pszFile)
+{
+    return birdUnlinkInternal(NULL /*hRoot*/, pszFile, NULL /*pwszFile*/, 1 /*fReadOnlyToo*/, 1 /*fFast*/);
+}
+
+
+int birdUnlinkForcedFastW(const wchar_t *pwszFile)
+{
+    return birdUnlinkInternal(NULL /*hRoot*/, NULL /*pszFile*/, pwszFile, 1 /*fReadOnlyToo*/, 1 /*fFast*/);
+}
+
+
+int birdUnlinkForcedFastEx(void *hRoot, const char *pszFile)
+{
+    return birdUnlinkInternal((HANDLE)hRoot, pszFile, NULL /*pwszFile*/, 1 /*fReadOnlyToo*/, 1 /*fFast*/);
+}
+
+
+int birdUnlinkForcedFastExW(void *hRoot, const wchar_t *pwszFile)
+{
+    return birdUnlinkInternal((HANDLE)hRoot, NULL /*pszFile*/, pwszFile, 1 /*fReadOnlyToo*/, 1 /*fFast*/);
+}
+
diff --git a/src/lib/nt/ntunlink.h b/src/lib/nt/ntunlink.h
new file mode 100644
index 0000000..e7934be
--- /dev/null
+++ b/src/lib/nt/ntunlink.h
@@ -0,0 +1,54 @@
+/* $Id: ntunlink.h 3060 2017-09-21 15:11:07Z bird $ */
+/** @file
+ * MSC + NT unlink and variations.
+ */
+
+/*
+ * Copyright (c) 2005-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+#ifndef ___nt_ntunlink_h
+#define ___nt_ntunlink_h
+
+#include "nttypes.h"
+#include <wchar.h>
+
+int birdUnlink(const char *pszFile);
+int birdUnlinkW(const wchar_t *pwszFile);
+int birdUnlinkEx(void *hRoot, const char *pszFile);
+int birdUnlinkExW(void *hRoot, const wchar_t *pwszFile);
+int birdUnlinkForced(const char *pszFile);
+int birdUnlinkForcedW(const wchar_t *pwszFile);
+int birdUnlinkForcedEx(void *hRoot, const char *pszFile);
+int birdUnlinkForcedExW(void *hRoot, const wchar_t *pszFile);
+int birdUnlinkForcedFast(const char *pszFile);
+int birdUnlinkForcedFastW(const wchar_t *pwszFile);
+int birdUnlinkForcedFastEx(void *hRoot, const char *pszFile);
+int birdUnlinkForcedFastExW(void *hRoot, const wchar_t *pwszFile);
+
+#undef  unlink
+#define unlink(a_pszPath)     birdUnlinkForced(a_pszPath)
+
+#endif
+
diff --git a/src/lib/nt/ntutimes.c b/src/lib/nt/ntutimes.c
new file mode 100644
index 0000000..554e6e6
--- /dev/null
+++ b/src/lib/nt/ntutimes.c
@@ -0,0 +1,99 @@
+/* $Id: ntutimes.c 3097 2017-10-14 03:52:44Z bird $ */
+/** @file
+ * MSC + NT utimes and lutimes
+ */
+
+/*
+ * Copyright (c) 2005-2017 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "ntutimes.h"
+
+#include "ntstuff.h"
+#include "nthlp.h"
+
+
+
+static int birdUtimesInternal(const char *pszPath, BirdTimeVal_T paTimes[2], int fFollowLink)
+{
+    HANDLE hFile = birdOpenFileEx(NULL,
+                                  pszPath,
+                                  FILE_WRITE_ATTRIBUTES | SYNCHRONIZE,
+                                  FILE_ATTRIBUTE_NORMAL,
+                                  FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
+                                  FILE_OPEN,
+                                  FILE_OPEN_FOR_BACKUP_INTENT | (fFollowLink ? 0 : FILE_OPEN_REPARSE_POINT),
+                                  OBJ_CASE_INSENSITIVE);
+    if (hFile != INVALID_HANDLE_VALUE)
+    {
+        MY_FILE_BASIC_INFORMATION   Info;
+        MY_IO_STATUS_BLOCK          Ios;
+        MY_NTSTATUS                 rcNt;
+
+        memset(&Info, 0, sizeof(Info));
+        if (paTimes)
+        {
+            Info.LastAccessTime.QuadPart = birdNtTimeFromTimeVal(&paTimes[0]);
+            Info.LastWriteTime.QuadPart  = birdNtTimeFromTimeVal(&paTimes[1]);
+        }
+        else
+        {
+            /** @todo replace this with something from ntdll  */
+            FILETIME Now;
+            GetSystemTimeAsFileTime(&Now);
+            Info.LastAccessTime.HighPart  = Now.dwHighDateTime;
+            Info.LastAccessTime.LowPart   = Now.dwLowDateTime;
+            Info.LastWriteTime.HighPart   = Now.dwHighDateTime;
+            Info.LastWriteTime.LowPart    = Now.dwLowDateTime;
+        }
+
+        Ios.Information = -1;
+        Ios.u.Status    = -1;
+
+        rcNt = g_pfnNtSetInformationFile(hFile, &Ios, &Info, sizeof(Info), MyFileBasicInformation);
+
+        birdCloseFile(hFile);
+
+        if (MY_NT_SUCCESS(rcNt))
+            return 0;
+        birdSetErrnoFromNt(rcNt);
+    }
+    return -1;
+}
+
+
+int birdUtimes(const char *pszFile, BirdTimeVal_T paTimes[2])
+{
+    return birdUtimesInternal(pszFile, paTimes, 1 /*fFollowLink*/);
+}
+
+int birdLUtimes(const char *pszFile, BirdTimeVal_T paTimes[2])
+{
+    return birdUtimesInternal(pszFile, paTimes, 0 /*fFollowLink*/);
+}
+
diff --git a/src/lib/nt/ntutimes.h b/src/lib/nt/ntutimes.h
new file mode 100644
index 0000000..42589ff
--- /dev/null
+++ b/src/lib/nt/ntutimes.h
@@ -0,0 +1,45 @@
+/* $Id: ntutimes.h 3060 2017-09-21 15:11:07Z bird $ */
+/** @file
+ * MSC + NT utimes and lutimes.
+ */
+
+/*
+ * Copyright (c) 2005-2017 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+#ifndef ___nt_ntutimes_h
+#define ___nt_ntutimes_h
+
+#include "nttypes.h"
+
+int birdUtimes(const char *pszFile, BirdTimeVal_T paTimes[2]);
+int birdLUtimes(const char *pszFile, BirdTimeVal_T paTimes[2]);
+
+#undef  utimes
+#define utimes(a_pszPath, a_paTimes)    birdUtimes(a_pszPath, a_paTimes)
+#undef  lutimes
+#define lutimes(a_pszPath, a_paTimes)   birdLUtimes(a_pszPath, a_paTimes)
+
+#endif
+
diff --git a/src/lib/nt/tstNtFts.c b/src/lib/nt/tstNtFts.c
new file mode 100644
index 0000000..8d8136c
--- /dev/null
+++ b/src/lib/nt/tstNtFts.c
@@ -0,0 +1,257 @@
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#ifndef USE_OLD_FTS
+# include "fts-nt.h"
+#else
+# include "kmkbuiltin/ftsfake.h"
+#endif
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+
+static int usage(const char *argv0)
+{
+    printf("usage: %s [options] <dirs & files>\n", argv0);
+    printf("\n"
+           "options:\n"
+           "  -d, --see-dot\n"
+           "    FTS_SEEDOT\n"
+           "  -p, --physical\n"
+           "    FTS_PHYSICAL\n"
+           "  -l, --logical\n"
+           "    FTS_LOGICAL\n"
+           "  -H, --dereference-command-line\n"
+           "    FTS_COMFOLLOW\n"
+           "  -L, --dereference\n"
+           "    Follow symbolic links while scanning directories.\n"
+           "  -P, --no-dereference\n"
+           "    Do not follow symbolic links while scanning directories.\n"
+           "  -c, --no-chdir\n"
+           "    FTS_NOCHDIR\n"
+           "  -s, --no-stat\n"
+           "    FTS_NOSTAT\n"
+           "  -x, --one-file-system\n"
+           "    FTS_XDEV\n"
+           "  -q, --quiet\n"
+           "    Quiet operation, no output.\n"
+           "  -v, --verbose\n"
+           "    Verbose operation (default).\n"
+           );
+    return 0;
+}
+
+
+int main(int argc, char **argv)
+{
+    FTS        *pFts;
+    int         i;
+    int         rcExit       = 0;
+    int         cVerbosity   = 1;
+    int         fFollowLinks = 0;
+    int         fFtsFlags    = 0;
+    unsigned    fDoneOptions = 0;
+    unsigned    cFtsArgs     = 0;
+    char const **papszFtsArgs = calloc(argc + 1, sizeof(char *));
+
+    /*
+     * Parse options and heap up non-options.
+     */
+    for (i = 1; i < argc; i++)
+    {
+        const char *pszArg = argv[i];
+        if (*pszArg == '-' && !fDoneOptions)
+        {
+            char chOpt = *++pszArg;
+            pszArg++;
+            if (chOpt == '-')
+            {
+                if (!chOpt)
+                {
+                    fDoneOptions = 1;
+                    continue;
+                }
+                if (strcmp(pszArg, "help") == 0)
+                    chOpt = 'h';
+                else if (strcmp(pszArg, "version") == 0)
+                    chOpt = 'V';
+                else if (strcmp(pszArg, "see-dot") == 0)
+                    chOpt = 'd';
+                else if (strcmp(pszArg, "physical") == 0)
+                    chOpt = 'p';
+                else if (strcmp(pszArg, "logical") == 0)
+                    chOpt = 'l';
+                else if (strcmp(pszArg, "dereference-command-line") == 0)
+                    chOpt = 'H';
+                else if (strcmp(pszArg, "no-chdir") == 0)
+                    chOpt = 'c';
+                else if (strcmp(pszArg, "no-stat") == 0)
+                    chOpt = 's';
+                else if (strcmp(pszArg, "one-file-system") == 0)
+                    chOpt = 'x';
+                else if (strcmp(pszArg, "quiet") == 0)
+                    chOpt = 'q';
+                else if (strcmp(pszArg, "verbose") == 0)
+                    chOpt = 'v';
+                else if (strcmp(pszArg, "no-ansi") == 0)
+                    chOpt = 'w';
+                else
+                {
+                    fprintf(stderr, "syntax error: Unknown option: %s (%s)\n", argv[i], pszArg);
+                    return 2;
+                }
+                pszArg = "";
+            }
+            do
+            {
+                switch (chOpt)
+                {
+                    case '?':
+                    case 'h':
+                        return usage(argv[0]);
+                    case 'V':
+                        printf("v0.0.0\n");
+                        return 0;
+
+                    case 'd':
+                        fFtsFlags |= FTS_SEEDOT;
+                        break;
+                    case 'l':
+                        fFtsFlags |= FTS_LOGICAL;
+                        break;
+                    case 'p':
+                        fFtsFlags |= FTS_PHYSICAL;
+                        break;
+                    case 'H':
+                        fFtsFlags |= FTS_COMFOLLOW;
+                        break;
+                    case 'c':
+                        fFtsFlags |= FTS_NOCHDIR;
+                        break;
+                    case 's':
+                        fFtsFlags |= FTS_NOSTAT;
+                        break;
+                    case 'x':
+                        fFtsFlags |= FTS_XDEV;
+                        break;
+#ifdef FTS_NO_ANSI
+                    case 'w':
+                        fFtsFlags |= FTS_NO_ANSI;
+                        break;
+#endif
+                    case 'L':
+                        fFollowLinks = 1;
+                        break;
+                    case 'P':
+                        fFollowLinks = 0;
+                        break;
+
+                    case 'q':
+                        cVerbosity = 0;
+                        break;
+                    case 'v':
+                        cVerbosity++;
+                        break;
+
+                    default:
+                        fprintf(stderr, "syntax error: Unknown option: -%c (%s)\n", chOpt, argv[i]);
+                        return 2;
+                }
+                chOpt = *pszArg++;
+            } while (chOpt != '\0');
+        }
+        else
+            papszFtsArgs[cFtsArgs++] = pszArg;
+    }
+
+#ifdef USE_OLD_FTS
+    if (papszFtsArgs[0] == NULL)
+    {
+        fprintf(stderr, "Nothing to do\n");
+        return 1;
+    }
+#endif
+
+    /*
+     * Do the traversal.
+     */
+    errno = 0;
+    pFts = fts_open((char **)papszFtsArgs, fFtsFlags, NULL /*pfnCompare*/);
+    if (pFts)
+    {
+        for (;;)
+        {
+            FTSENT *pFtsEnt = fts_read(pFts);
+            if (pFtsEnt)
+            {
+                const char *pszState;
+                switch (pFtsEnt->fts_info)
+                {
+                    case FTS_D:         pszState = "D"; break;
+                    case FTS_DC:        pszState = "DC"; break;
+                    case FTS_DEFAULT:   pszState = "DEFAULT"; break;
+                    case FTS_DNR:       pszState = "DNR"; break;
+                    case FTS_DOT:       pszState = "DOT"; break;
+                    case FTS_DP:        pszState = "DP"; break;
+                    case FTS_ERR:       pszState = "ERR"; break;
+                    case FTS_F:         pszState = "F"; break;
+                    case FTS_INIT:      pszState = "INIT"; break;
+                    case FTS_NS:        pszState = "NS"; break;
+                    case FTS_NSOK:      pszState = "NSOK"; break;
+                    case FTS_SL:        pszState = "SL"; break;
+                    case FTS_SLNONE:    pszState = "SLNONE"; break;
+                    default:
+                        pszState = "Invalid";
+                        rcExit = 1;
+                        break;
+                }
+
+                if (cVerbosity > 0)
+                {
+#ifdef FTS_NO_ANSI
+                    if (fFtsFlags & FTS_NO_ANSI)
+                        printf("%8s %ls\n", pszState, pFtsEnt->fts_wcsaccpath);
+                    else
+#endif
+                        printf("%8s %s\n", pszState, pFtsEnt->fts_accpath);
+                }
+                if (   pFtsEnt->fts_info == FTS_SL
+                    && pFtsEnt->fts_number == 0
+                    && fFollowLinks
+                    && (   (fFtsFlags & FTS_COMFOLLOW)
+                        || pFtsEnt->fts_level > FTS_ROOTLEVEL) ) {
+                    pFtsEnt->fts_number++;
+                    fts_set(pFts, pFtsEnt, FTS_FOLLOW);
+                }
+            }
+            else
+            {
+                if (errno != 0)
+                {
+                    fprintf(stderr, "fts_read failed: errno=%d\n", errno);
+                    rcExit = 1;
+                }
+                break;
+            }
+        } /* enum loop */
+
+        errno = 0;
+        i = fts_close(pFts);
+        if (i != 0)
+        {
+            fprintf(stderr, "fts_close failed: errno=%d\n", errno);
+            rcExit = 1;
+        }
+    }
+    else
+    {
+        fprintf(stderr, "fts_open failed: errno=%d (cFtsArgs=%u)\n", errno, cFtsArgs);
+        rcExit = 1;
+    }
+
+    return rcExit;
+}
diff --git a/src/lib/nt/tstNtStat.c b/src/lib/nt/tstNtStat.c
new file mode 100644
index 0000000..3823ab7
--- /dev/null
+++ b/src/lib/nt/tstNtStat.c
@@ -0,0 +1,157 @@
+/* $Id: tstNtStat.c 3007 2016-11-06 16:46:43Z bird $ */
+/** @file
+ * Manual lstat/stat testcase.
+ */
+
+/*
+ * Copyright (c) 2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <stdio.h>
+#include <errno.h>
+#include "ntstat.h"
+
+
+static int IsLeapYear(int iYear)
+{
+    return iYear % 4 == 0
+        && (   iYear % 100 != 0
+            || iYear % 400 == 0);
+}
+
+static int DaysInMonth(int iYear, int iMonth)
+{
+    switch (iMonth)
+    {
+        case 1:
+        case 3:
+        case 5:
+        case 7:
+        case 8:
+        case 10:
+        case 12:
+            return 31;
+        case 4:
+        case 6:
+        case 9:
+        case 11:
+            return 30;
+        case 2:
+            return IsLeapYear(iYear) ? 29 : 28;
+
+        default:
+            *(void **)(size_t)iMonth = 0; /* crash! */
+            return 0;
+    }
+}
+
+
+static char *FormatTimeSpec(char *pszBuf, BirdTimeSpec_T const *pTimeSpec)
+{
+    if (pTimeSpec->tv_sec >= 0)
+    {
+        int     iYear  = 1970;
+        int     iMonth = 1;
+        int     iDay   = 1;
+        int     iHour  = 0;
+        int     iMin   = 0;
+        int     iSec   = 0;
+        __int64 cSecs  = pTimeSpec->tv_sec;
+
+        /* lazy bird approach, find date, day by day */
+        while (cSecs >= 24*3600)
+        {
+            if (   iDay < 28
+                || iDay < DaysInMonth(iYear, iMonth))
+                iDay++;
+            else
+            {
+                if (iMonth < 12)
+                    iMonth++;
+                else
+                {
+                    iYear++;
+                    iMonth = 1;
+                }
+                iDay = 1;
+            }
+            cSecs -= 24*3600;
+        }
+
+        iHour  = (int)cSecs / 3600;
+        cSecs %= 3600;
+        iMin   = (int)cSecs / 60;
+        iSec   = (int)cSecs % 60;
+
+        sprintf(pszBuf, "%04d-%02d-%02dT%02u:%02u:%02u.%09u (%I64d.%09u)",
+                iYear, iMonth, iDay, iHour, iMin, iSec, pTimeSpec->tv_nsec,
+                pTimeSpec->tv_sec, pTimeSpec->tv_nsec);
+    }
+    else
+        sprintf(pszBuf, "%I64d.%09u (before 1970-01-01)", pTimeSpec->tv_sec, pTimeSpec->tv_nsec);
+    return pszBuf;
+}
+
+
+int main(int argc, char **argv)
+{
+    int rc = 0;
+    int i;
+
+    for (i = 1; i < argc; i++)
+    {
+        struct stat st;
+        if (lstat(argv[i], &st) == 0)
+        {
+            char szBuf[256];
+            printf("%s:\n", argv[i]);
+            printf("  st_mode:          %o\n", st.st_mode);
+            printf("  st_isdirsymlink:  %d\n", st.st_isdirsymlink);
+            printf("  st_ismountpoint:  %d\n", st.st_ismountpoint);
+            printf("  st_size:          %I64u (%#I64x)\n", st.st_size, st.st_size);
+            printf("  st_atim:          %s\n", FormatTimeSpec(szBuf, &st.st_atim));
+            printf("  st_mtim:          %s\n", FormatTimeSpec(szBuf, &st.st_mtim));
+            printf("  st_ctim:          %s\n", FormatTimeSpec(szBuf, &st.st_ctim));
+            printf("  st_birthtim:      %s\n", FormatTimeSpec(szBuf, &st.st_birthtim));
+            printf("  st_ino:           %#I64x\n", st.st_ino);
+            printf("  st_dev:           %#I64x\n", st.st_dev);
+            printf("  st_nlink:         %u\n", st.st_nlink);
+            printf("  st_rdev:          %#x\n", st.st_rdev);
+            printf("  st_uid:           %d\n", st.st_uid);
+            printf("  st_gid:           %d\n", st.st_gid);
+            printf("  st_blksize:       %d (%#x)\n", st.st_blksize, st.st_blksize);
+            printf("  st_blocks:        %I64u (%#I64x)\n", st.st_blocks, st.st_blocks);
+        }
+        else
+        {
+            fprintf(stderr, "stat failed on '%s': errno=%u\n", argv[i], errno);
+            rc = 1;
+        }
+    }
+    return rc;
+}
+
diff --git a/src/lib/nt/tstkFsCache.c b/src/lib/nt/tstkFsCache.c
new file mode 100644
index 0000000..7eb23db
--- /dev/null
+++ b/src/lib/nt/tstkFsCache.c
@@ -0,0 +1,313 @@
+/* $Id: tstkFsCache.c 3381 2020-06-12 11:36:10Z bird $ */
+/** @file
+ * kFsCache testcase.
+ */
+
+/*
+ * Copyright (c) 2020 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <direct.h>
+#include <errno.h>
+#include <process.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "kFsCache.h"
+
+#include <windows.h>
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static unsigned g_cErrors = 0;
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+#define CHECK_RETV(a_Expr) do { \
+        if (!(a_Expr)) \
+        { \
+            g_cErrors++; \
+            fprintf(stderr, "error(%u): %s\n", __LINE__, #a_Expr);\
+            return; \
+        } \
+    } while (0)
+
+#define CHECK(a_Expr) do { \
+        if (!(a_Expr)) \
+        { \
+            g_cErrors++; \
+            fprintf(stderr, "error(%u): %s\n", __LINE__, #a_Expr);\
+        } \
+    } while (0)
+
+static int myMkDir(const char *pszPath)
+{
+    if (_mkdir(pszPath) == 0)
+        return 0;
+    fprintf(stderr, "_mkdir(%s) -> errno=%d\n", pszPath, errno);
+    return -1;
+}
+
+static int myCreateFile(const char *pszPath)
+{
+    FILE *pFile = fopen(pszPath, "w");
+    if (pFile)
+    {
+        fclose(pFile);
+        return 0;
+    }
+    fprintf(stderr, "fopen(%s,w) -> errno=%d\n", pszPath, errno);
+    return -1;
+}
+
+static void test1(const char *pszWorkDir)
+{
+    char            szPath[4096];
+    size_t          cchWorkDir = strlen(pszWorkDir);
+    PKFSCACHE       pCache;
+    KFSLOOKUPERROR  enmLookupError;
+    PKFSOBJ         pFsObj;
+
+    CHECK_RETV(cchWorkDir < sizeof(szPath) - 1024);
+    memcpy(szPath, pszWorkDir, cchWorkDir);
+    cchWorkDir += sprintf(&szPath[cchWorkDir], "\\tstkFsCache%u", _getpid());
+    CHECK_RETV(myMkDir(szPath) == 0);
+
+    pCache = kFsCacheCreate(KFSCACHE_F_MISSING_OBJECTS | KFSCACHE_F_MISSING_PATHS);
+    CHECK_RETV(pCache != NULL);
+
+    enmLookupError = (KFSLOOKUPERROR)-1;
+    CHECK((pFsObj = kFsCacheLookupA(pCache, szPath, &enmLookupError)) != NULL);
+
+#if 0
+    /*
+     * Accidentally left out the '\' in front of the filename, so it ended up in
+     * a temp dir with almost 1000 files and that triggered a refresh issue.
+     */
+    /* Negative lookup followed by creation of that file. */
+    enmLookupError = (KFSLOOKUPERROR)-1;
+    sprintf(&szPath[cchWorkDir], "file1.txt");
+    CHECK((pFsObj = kFsCacheLookupA(pCache, szPath, &enmLookupError)) != NULL);
+    if (pFsObj)
+        CHECK(pFsObj->bObjType == KFSOBJ_TYPE_MISSING);
+
+    CHECK(myCreateFile(szPath) == 0);
+
+    CHECK((pFsObj = kFsCacheLookupA(pCache, szPath, &enmLookupError)) != NULL);
+    if (pFsObj)
+        CHECK(pFsObj->bObjType == KFSOBJ_TYPE_MISSING);
+
+    kFsCacheInvalidateAll(pCache);
+    CHECK((pFsObj = kFsCacheLookupA(pCache, szPath, &enmLookupError)) != NULL);
+    if (pFsObj)
+    {
+        CHECK(pFsObj->bObjType == KFSOBJ_TYPE_FILE);
+        if (pFsObj->bObjType != KFSOBJ_TYPE_FILE)
+            fprintf(stderr, "bObjType=%d\n", pFsObj->bObjType);
+    }
+#endif
+
+    /*
+     * Try emulate the temp issue above.  Seem to require several files.
+     * (The problem was related to long/short filename updating.)
+     */
+    szPath[cchWorkDir++] = '\\';
+    sprintf(&szPath[cchWorkDir], "longfilename1.txt");
+    CHECK(myCreateFile(szPath) == 0);
+    sprintf(&szPath[cchWorkDir], "longfilename2.txt");
+    CHECK(myCreateFile(szPath) == 0);
+#if 1
+    /* no file 3 */
+    sprintf(&szPath[cchWorkDir], "longfilename4.txt");
+    CHECK(myCreateFile(szPath) == 0);
+    sprintf(&szPath[cchWorkDir], "longfilename5.txt");
+    CHECK(myCreateFile(szPath) == 0);
+    /* no file 6 */
+    sprintf(&szPath[cchWorkDir], "longfilename7.txt");
+    CHECK(myCreateFile(szPath) == 0);
+#endif
+
+    enmLookupError = (KFSLOOKUPERROR)-1;
+    sprintf(&szPath[cchWorkDir], "longfilename3.txt");
+    CHECK((pFsObj = kFsCacheLookupA(pCache, szPath, &enmLookupError)) != NULL);
+    CHECK(pFsObj && pFsObj->bObjType == KFSOBJ_TYPE_MISSING);
+
+    enmLookupError = (KFSLOOKUPERROR)-1;
+    sprintf(&szPath[cchWorkDir], "longfilename6.txt");
+    CHECK((pFsObj = kFsCacheLookupA(pCache, szPath, &enmLookupError)) != NULL);
+    CHECK(pFsObj && pFsObj->bObjType == KFSOBJ_TYPE_MISSING);
+
+    sprintf(&szPath[cchWorkDir], "longfilename3.txt");
+    CHECK(myCreateFile(szPath) == 0);
+    sprintf(&szPath[cchWorkDir], "longfilename6.txt");
+    CHECK(myCreateFile(szPath) == 0);
+
+    sprintf(&szPath[cchWorkDir], "longfilename3.txt");
+    CHECK((pFsObj = kFsCacheLookupA(pCache, szPath, &enmLookupError)) != NULL);
+    CHECK(pFsObj && pFsObj->bObjType == KFSOBJ_TYPE_MISSING);
+
+    sprintf(&szPath[cchWorkDir], "longfilename6.txt");
+    CHECK((pFsObj = kFsCacheLookupA(pCache, szPath, &enmLookupError)) != NULL);
+    CHECK(pFsObj && pFsObj->bObjType == KFSOBJ_TYPE_MISSING);
+
+    kFsCacheInvalidateAll(pCache);
+
+    sprintf(&szPath[cchWorkDir], "longfilename3.txt");
+    CHECK((pFsObj = kFsCacheLookupA(pCache, szPath, &enmLookupError)) != NULL);
+    if (pFsObj)
+    {
+        CHECK(pFsObj->bObjType == KFSOBJ_TYPE_FILE);
+        if (pFsObj->bObjType != KFSOBJ_TYPE_FILE)
+            fprintf(stderr, "bObjType=%d\n", pFsObj->bObjType);
+    }
+
+    sprintf(&szPath[cchWorkDir], "longfilename6.txt");
+    CHECK((pFsObj = kFsCacheLookupA(pCache, szPath, &enmLookupError)) != NULL);
+    if (pFsObj)
+    {
+        CHECK(pFsObj->bObjType == KFSOBJ_TYPE_FILE);
+        if (pFsObj->bObjType != KFSOBJ_TYPE_FILE)
+            fprintf(stderr, "bObjType=%d\n", pFsObj->bObjType);
+    }
+}
+
+static int usage(int rcExit)
+{
+    printf("usage: tstkFsCache [--workdir dir]\n"
+           "\n"
+           "Test program of the kFsCache.  May leave stuff behind in the work\n"
+           "directory requiring manual cleanup.\n"
+           );
+    return rcExit;
+}
+
+int main(int argc, char **argv)
+{
+    const char *pszWorkDir = NULL;
+    int i;
+
+    /*
+     * Parse arguments.
+     */
+    for (i = 1; i < argc; i++)
+    {
+        if (argv[i][0] == '-')
+        {
+            const char *pszValue;
+            const char *psz = &argv[i][1];
+            char chOpt;
+            chOpt = *psz++;
+            if (chOpt == '-')
+            {
+                /* Convert long to short option. */
+                if (!strcmp(psz, "workdir"))
+                    chOpt = 'w';
+                else if (!strcmp(psz, "help"))
+                    chOpt = '?';
+                else if (!strcmp(psz, "version"))
+                    chOpt = 'V';
+                else
+                    return usage(2);
+                psz = "";
+            }
+
+            /*
+             * Requires value?
+             */
+            switch (chOpt)
+            {
+                case 'w':
+                    if (*psz)
+                        pszValue = psz;
+                    else if (++i < argc)
+                        pszValue = argv[i];
+                    else
+                    {
+                        fprintf(stderr, "The '-%c' option takes a value.\n", chOpt);
+                        return 2;
+                    }
+                    break;
+
+                default:
+                    pszValue = NULL;
+                    break;
+            }
+
+            switch (chOpt)
+            {
+                case 'w':
+                    pszWorkDir = pszValue;
+                    break;
+
+                case '?':
+                    return usage(0);
+                case 'V':
+                    printf("0.0.0\n");
+                    return 0;
+
+                /*
+                 * Invalid argument.
+                 */
+                default:
+                    fprintf(stderr, "syntax error: Invalid option '%s'.\n", argv[i]);
+                    return 2;
+            }
+        }
+        else
+        {
+            fprintf(stderr, "syntax error: Invalid argument '%s'.\n", argv[i]);
+            return 2;
+        }
+    }
+
+    /*
+     * Resolve defaults.
+     */
+    if (!pszWorkDir)
+    {
+        pszWorkDir = getenv("TEMP");
+        if (!pszWorkDir)
+            pszWorkDir = ".";
+    }
+
+    /*
+     * Do the testing.
+     */
+    test1(pszWorkDir);
+
+    if (!g_cErrors)
+        printf("Success!\n");
+    else
+        printf("Failed - %u errors!\n", g_cErrors);
+    return g_cErrors == 0 ? 0 : 1;
+}
+
+
diff --git a/src/lib/nt_fullpath.c b/src/lib/nt_fullpath.c
new file mode 100644
index 0000000..fa9a7cc
--- /dev/null
+++ b/src/lib/nt_fullpath.c
@@ -0,0 +1,580 @@
+/* $Id: nt_fullpath.c 3174 2018-03-21 21:37:52Z bird $ */
+/** @file
+ * fixcase - fixes the case of paths, windows specific.
+ */
+
+/*
+ * Copyright (c) 2004-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <Windows.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <direct.h>
+
+#include "nt_fullpath.h"
+
+
+/*
+ * Corrects the case of a path.
+ * Expects a fullpath!
+ * Added by bird for the $(abspath ) function and w32ify
+ */
+static void w32_fixcase(char *pszPath)
+{
+#if 0 /* no mp safe */
+    static char     s_szLast[260];
+    size_t          cchLast;
+#endif
+
+#ifndef NDEBUG
+# define my_assert(expr) \
+    do { \
+        if (!(expr)) { \
+            printf("my_assert: %s, file %s, line %d\npszPath=%s\npsz=%s\n", \
+                   #expr, __FILE__, __LINE__, pszPath, psz); \
+            __debugbreak(); \
+            exit(1); \
+        } \
+    } while (0)
+#else
+# define my_assert(expr) do {} while (0)
+#endif
+
+    char *psz = pszPath;
+    if (*psz == '/' || *psz == '\\')
+    {
+        if (psz[1] == '/' || psz[1] == '\\')
+        {
+            /* UNC */
+            my_assert(psz[1] == '/' || psz[1] == '\\');
+            my_assert(psz[2] != '/' && psz[2] != '\\');
+
+            /* skip server name */
+            psz += 2;
+            while (*psz != '\\' && *psz != '/')
+            {
+                if (!*psz)
+                    return;
+                *psz++ = toupper(*psz);
+            }
+
+            /* skip the share name */
+            psz++;
+            my_assert(*psz != '/' && *psz != '\\');
+            while (*psz != '\\' && *psz != '/')
+            {
+                if (!*psz)
+                    return;
+                *psz++ = toupper(*psz);
+            }
+            my_assert(*psz == '/' || *psz == '\\');
+            psz++;
+        }
+        else
+        {
+            /* Unix spec */
+            psz++;
+        }
+    }
+    else
+    {
+        /* Drive letter */
+        my_assert(psz[1] == ':');
+        *psz = toupper(*psz);
+        my_assert(psz[0] >= 'A' && psz[0] <= 'Z');
+        my_assert(psz[2] == '/' || psz[2] == '\\');
+        psz += 3;
+    }
+
+#if 0 /* not mp safe */
+    /*
+     * Try make use of the result from the previous call.
+     * This is ignorant to slashes and similar, but may help even so.
+     */
+    if (    s_szLast[0] == pszPath[0]
+        &&  (psz - pszPath == 1 || s_szLast[1] == pszPath[1])
+        &&  (psz - pszPath <= 2 || s_szLast[2] == pszPath[2])
+       )
+    {
+        char *pszLast = &s_szLast[psz - pszPath];
+        char *pszCur = psz;
+        char *pszSrc0 = pszLast;
+        char *pszDst0 = pszCur;
+        for (;;)
+        {
+            const char ch1 = *pszCur;
+            const char ch2 = *pszLast;
+            if (    ch1 != ch2
+                &&  (ch1 != '\\' || ch2 != '/')
+                &&  (ch1 != '/'  || ch2 != '\\')
+                &&  tolower(ch1) != tolower(ch2)
+                &&  toupper(ch1) != toupper(ch2))
+                break;
+            if (ch1 == '/' || ch1 == '\\')
+            {
+				psz = pszCur + 1;
+                *pszLast = ch1; /* preserve the slashes */
+            }
+            else if (ch1 == '\0')
+            {
+                psz = pszCur;
+                break;
+            }
+            pszCur++;
+            pszLast++;
+        }
+        if (psz != pszDst0)
+            memcpy(pszDst0, pszSrc0, psz - pszDst0);
+    }
+#endif
+
+    /*
+     * Pointing to the first char after the unc or drive specifier,
+     * or in case of a cache hit, the first non-matching char (following a slash of course).
+     */
+    while (*psz)
+    {
+        WIN32_FIND_DATA FindFileData;
+        HANDLE hDir;
+        char chSaved0;
+        char chSaved1;
+        char *pszEnd;
+        int iLongNameDiff;
+        size_t cch;
+
+
+        /* find the end of the component. */
+        pszEnd = psz;
+        while (*pszEnd && *pszEnd != '/' && *pszEnd != '\\')
+            pszEnd++;
+        cch = pszEnd - psz;
+
+        /* replace the end with "?\0" */
+        chSaved0 = pszEnd[0];
+        chSaved1 = pszEnd[1];
+        pszEnd[0] = '?';
+        pszEnd[1] = '\0';
+
+        /* find the right filename. */
+        hDir = FindFirstFile(pszPath, &FindFileData);
+        pszEnd[1] = chSaved1;
+        if (!hDir)
+        {
+#if 0 /* not MP safe */
+            cchLast = psz - pszPath;
+            memcpy(s_szLast, pszPath, cchLast + 1);
+            s_szLast[cchLast + 1] = '\0';
+#endif
+            pszEnd[0] = chSaved0;
+            return;
+        }
+        pszEnd[0] = '\0';
+        while (   (iLongNameDiff = stricmp(FindFileData.cFileName, psz))
+               && stricmp(FindFileData.cAlternateFileName, psz))
+        {
+            if (!FindNextFile(hDir, &FindFileData))
+            {
+#if 0 /* not MP safe */
+                cchLast = psz - pszPath;
+                memcpy(s_szLast, pszPath, cchLast + 1);
+                s_szLast[cchLast + 1] = '\0';
+#endif
+                pszEnd[0] = chSaved0;
+                return;
+            }
+        }
+        pszEnd[0] = chSaved0;
+        if (    iLongNameDiff                           /* matched the short name */
+            ||  !FindFileData.cAlternateFileName[0]     /* no short name */
+            || !memchr(psz, ' ', cch))                  /* no spaces in the matching name */
+            memcpy(psz, !iLongNameDiff ? FindFileData.cFileName : FindFileData.cAlternateFileName, cch);
+        else
+        {
+            /* replace spacy name with the short name. */
+            const size_t cchAlt = strlen(FindFileData.cAlternateFileName);
+            const size_t cchDelta = cch - cchAlt;
+            my_assert(cchAlt > 0);
+            if (!cchDelta)
+                memcpy(psz, FindFileData.cAlternateFileName, cch);
+            else
+            {
+                size_t cbLeft = strlen(pszEnd) + 1;
+                if ((psz - pszPath) + cbLeft + cchAlt <= _MAX_PATH)
+                {
+                    memmove(psz + cchAlt, pszEnd, cbLeft);
+                    pszEnd -= cchDelta;
+                    memcpy(psz, FindFileData.cAlternateFileName, cchAlt);
+                }
+                else
+                    fprintf(stderr, "kBuild: case & space fixed filename is growing too long (%d bytes)! '%s'\n",
+                            (psz - pszPath) + cbLeft + cchAlt, pszPath);
+            }
+        }
+        my_assert(pszEnd[0] == chSaved0);
+        FindClose(hDir);
+
+        /* advance to the next component */
+        if (!chSaved0)
+        {
+            psz = pszEnd;
+            break;
+        }
+        psz = pszEnd + 1;
+        my_assert(*psz != '/' && *psz != '\\');
+    }
+
+#if 0 /* not MP safe */
+    /* *psz == '\0', the end. */
+    cchLast = psz - pszPath;
+    memcpy(s_szLast, pszPath, cchLast + 1);
+#endif
+#undef my_assert
+}
+
+#define MY_FileNameInformation 9
+typedef struct _MY_FILE_NAME_INFORMATION
+{
+    ULONG FileNameLength;
+    WCHAR FileName[1];
+} MY_FILE_NAME_INFORMATION, *PMY_FILE_NAME_INFORMATION;
+
+#define MY_FileInternalInformation 6
+typedef struct _MY_FILE_INTERNAL_INFORMATION {
+    LARGE_INTEGER IndexNumber;
+} MY_FILE_INTERNAL_INFORMATION, *PMY_FILE_INTERNAL_INFORMATION;
+
+#define MY_FileFsVolumeInformation 1
+typedef struct _MY_FILE_FS_VOLUME_INFORMATION
+{
+    LARGE_INTEGER VolumeCreationTime;
+    ULONG VolumeSerialNumber;
+    ULONG VolumeLabelLength;
+    BOOLEAN SupportsObjects;
+    WCHAR VolumeLabel[/*1*/128];
+} MY_FILE_FS_VOLUME_INFORMATION, *PMY_FILE_FS_VOLUME_INFORMATION;
+
+#define MY_FileFsAttributeInformation 5
+typedef struct _MY_FILE_FS_ATTRIBUTE_INFORMATION
+{
+    ULONG FileSystemAttributes;
+    LONG MaximumComponentNameLength;
+    ULONG FileSystemNameLength;
+    WCHAR FileSystemName[/*1*/64];
+} MY_FILE_FS_ATTRIBUTE_INFORMATION, *PMY_FILE_FS_ATTRIBUTE_INFORMATION;
+
+#define MY_FileFsDeviceInformation 4
+typedef struct MY_FILE_FS_DEVICE_INFORMATION
+{
+    ULONG DeviceType;
+    ULONG Characteristics;
+} MY_FILE_FS_DEVICE_INFORMATION, *PMY_FILE_FS_DEVICE_INFORMATION;
+#define MY_FILE_DEVICE_DISK              7
+#define MY_FILE_DEVICE_DISK_FILE_SYSTEM  8
+#define MY_FILE_DEVICE_FILE_SYSTEM       9
+#define MY_FILE_DEVICE_VIRTUAL_DISK     36
+
+
+typedef struct
+{
+    union
+    {
+        LONG    Status;
+        PVOID   Pointer;
+    };
+    ULONG_PTR   Information;
+} MY_IO_STATUS_BLOCK, *PMY_IO_STATUS_BLOCK;
+
+static BOOL                             g_fInitialized = FALSE;
+static int                              g_afNtfsDrives['Z' - 'A' + 1];
+static MY_FILE_FS_VOLUME_INFORMATION    g_aVolumeInfo['Z' - 'A' + 1];
+
+static LONG (NTAPI *g_pfnNtQueryInformationFile)(HANDLE FileHandle,
+    PMY_IO_STATUS_BLOCK IoStatusBlock, PVOID FileInformation,
+    ULONG Length, ULONG FileInformationClass);
+static LONG (NTAPI *g_pfnNtQueryVolumeInformationFile)(HANDLE FileHandle,
+    PMY_IO_STATUS_BLOCK IoStatusBlock, PVOID FsInformation,
+    ULONG Length, ULONG FsInformationClass);
+
+
+int
+nt_get_filename_info(const char *pszPath, char *pszFull, size_t cchFull)
+{
+    char                            abBuf[8192];
+    PMY_FILE_NAME_INFORMATION       pFileNameInfo = (PMY_FILE_NAME_INFORMATION)abBuf;
+    PMY_FILE_FS_VOLUME_INFORMATION  pFsVolInfo = (PMY_FILE_FS_VOLUME_INFORMATION)abBuf;
+    MY_IO_STATUS_BLOCK              Ios;
+    LONG                            rcNt;
+    HANDLE                          hFile;
+    int                             cchOut;
+    char                           *psz;
+    int                             iDrv;
+    int                             rc;
+
+    /*
+     * Check for NtQueryInformationFile the first time around.
+     */
+    if (!g_fInitialized)
+    {
+        g_fInitialized = TRUE;
+        if (!getenv("KMK_DONT_USE_NT_QUERY_INFORMATION_FILE"))
+        {
+            *(FARPROC *)&g_pfnNtQueryInformationFile =
+                GetProcAddress(LoadLibrary("ntdll.dll"), "NtQueryInformationFile");
+            *(FARPROC *)&g_pfnNtQueryVolumeInformationFile =
+                GetProcAddress(LoadLibrary("ntdll.dll"), "NtQueryVolumeInformationFile");
+        }
+        if (    g_pfnNtQueryInformationFile
+            &&  g_pfnNtQueryVolumeInformationFile)
+        {
+            unsigned i;
+            for (i = 0; i < sizeof(g_afNtfsDrives) / sizeof(g_afNtfsDrives[0]); i++ )
+                g_afNtfsDrives[i] = -1;
+        }
+        else
+        {
+            g_pfnNtQueryVolumeInformationFile = NULL;
+            g_pfnNtQueryInformationFile = NULL;
+        }
+    }
+    if (!g_pfnNtQueryInformationFile)
+        return -1;
+
+    /*
+     * The FileNameInformation we get is relative to where the volume is mounted,
+     * so we have to extract the driveletter prefix ourselves.
+     *
+     * FIXME: This will probably not work for volumes mounted in NTFS sub-directories.
+     */
+    psz = pszFull;
+    if (pszPath[0] == '\\' || pszPath[0] == '/')
+    {
+        /* unc or root of volume */
+        if (    (pszPath[1] == '\\' || pszPath[1] == '/')
+            &&  (pszPath[2] != '\\' || pszPath[2] == '/'))
+        {
+#if 0 /* don't bother with unc yet. */
+            /* unc - we get the server + name back */
+            *psz++ = '\\';
+#endif
+            return -1;
+        }
+        /* root slash */
+        *psz++ = _getdrive() + 'A' - 1;
+        *psz++ = ':';
+    }
+    else if (pszPath[1] == ':' && isalpha(pszPath[0]))
+    {
+        /* drive letter */
+        *psz++ = toupper(pszPath[0]);
+        *psz++ = ':';
+    }
+    else
+    {
+        /* relative */
+        *psz++ = _getdrive() + 'A' - 1;
+        *psz++ = ':';
+    }
+    iDrv = *pszFull - 'A';
+
+    /*
+     * Fat32 doesn't return filenames with the correct case, so restrict it
+     * to NTFS volumes for now.
+     */
+    if (g_afNtfsDrives[iDrv] == -1)
+    {
+        /* FSCTL_GET_REPARSE_POINT? Enumerate mount points? */
+        g_afNtfsDrives[iDrv] = 0;
+        psz[0] = '\\';
+        psz[1] = '\0';
+#if 1
+        hFile = CreateFile(pszFull,
+                           GENERIC_READ,
+                           FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                           NULL,
+                           OPEN_EXISTING,
+                           FILE_FLAG_BACKUP_SEMANTICS,
+                           NULL);
+        if (hFile != INVALID_HANDLE_VALUE)
+        {
+            PMY_FILE_FS_ATTRIBUTE_INFORMATION pFsAttrInfo = (PMY_FILE_FS_ATTRIBUTE_INFORMATION)abBuf;
+
+            memset(&Ios, 0, sizeof(Ios));
+            rcNt = g_pfnNtQueryVolumeInformationFile(hFile, &Ios, abBuf, sizeof(abBuf),
+                                                     MY_FileFsAttributeInformation);
+            if (    rcNt >= 0
+                //&&  pFsAttrInfo->FileSystemNameLength == 4
+                &&  pFsAttrInfo->FileSystemName[0] == 'N'
+                &&  pFsAttrInfo->FileSystemName[1] == 'T'
+                &&  pFsAttrInfo->FileSystemName[2] == 'F'
+                &&  pFsAttrInfo->FileSystemName[3] == 'S'
+                &&  pFsAttrInfo->FileSystemName[4] == '\0')
+            {
+                memset(&Ios, 0, sizeof(Ios));
+                rcNt = g_pfnNtQueryVolumeInformationFile(hFile, &Ios, &g_aVolumeInfo[iDrv],
+                                                         sizeof(MY_FILE_FS_VOLUME_INFORMATION),
+                                                         MY_FileFsVolumeInformation);
+                if (rcNt >= 0)
+                {
+                    DWORD dwDriveType = GetDriveType(pszFull);
+                    if (    dwDriveType == DRIVE_FIXED
+                        ||  dwDriveType == DRIVE_RAMDISK)
+                        g_afNtfsDrives[iDrv] = 1;
+                }
+            }
+            CloseHandle(hFile);
+        }
+#else
+        {
+            char szFSName[32];
+            if (    GetVolumeInformation(pszFull,
+                                         NULL, 0,   /* volume name */
+                                         NULL,      /* serial number */
+                                         NULL,      /* max component */
+                                         NULL,      /* volume attribs */
+                                         szFSName,
+                                         sizeof(szFSName))
+                &&  !strcmp(szFSName, "NTFS"))
+            {
+                g_afNtfsDrives[iDrv] = 1;
+            }
+        }
+#endif
+    }
+    if (!g_afNtfsDrives[iDrv])
+        return -1;
+
+    /*
+     * Try open the path and query its file name information.
+     */
+    hFile = CreateFile(pszPath,
+                       GENERIC_READ,
+                       FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                       NULL,
+                       OPEN_EXISTING,
+                       FILE_FLAG_BACKUP_SEMANTICS,
+                       NULL);
+    if (hFile != INVALID_HANDLE_VALUE)
+    {
+        /* check that the driver letter is correct first (reparse / symlink issues). */
+        memset(&Ios, 0, sizeof(Ios));
+        rcNt = g_pfnNtQueryVolumeInformationFile(hFile, &Ios, pFsVolInfo, sizeof(*pFsVolInfo), MY_FileFsVolumeInformation);
+        if (rcNt >= 0)
+        {
+            /** @todo do a quick search and try correct the drive letter? */
+            if (    pFsVolInfo->VolumeCreationTime.QuadPart == g_aVolumeInfo[iDrv].VolumeCreationTime.QuadPart
+                &&  pFsVolInfo->VolumeSerialNumber == g_aVolumeInfo[iDrv].VolumeSerialNumber)
+            {
+                memset(&Ios, 0, sizeof(Ios));
+                rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, abBuf, sizeof(abBuf), MY_FileNameInformation);
+                if (rcNt >= 0)
+                {
+                    cchOut = WideCharToMultiByte(CP_ACP, 0,
+                                                 pFileNameInfo->FileName, pFileNameInfo->FileNameLength / sizeof(WCHAR),
+                                                 psz, (int)(cchFull - (psz - pszFull) - 2), NULL, NULL);
+                    if (cchOut > 0)
+                    {
+                        const char *pszEnd;
+#if 0
+                        /* upper case the server and share */
+                        if (fUnc)
+                        {
+                            for (psz++; *psz != '/' && *psz != '\\'; psz++)
+                                *psz = toupper(*psz);
+                            for (psz++; *psz != '/' && *psz != '\\'; psz++)
+                                *psz = toupper(*psz);
+                        }
+#endif
+                        /* add trailing slash on directories if input has it. */
+                        pszEnd = strchr(pszPath, '\0');
+                        if (    (pszEnd[-1] == '/' || pszEnd[-1] == '\\')
+                            &&  psz[cchOut - 1] != '\\'
+                            &&  psz[cchOut - 1] != '//')
+                            psz[cchOut++] = '\\';
+
+                        /* make sure it's terminated */
+                        psz[cchOut] = '\0';
+                        rc = 0;
+                    }
+                    else
+                        rc = -3;
+                }
+                else
+                    rc = -4;
+            }
+            else
+                rc = -5;
+        }
+        else
+            rc = -6;
+        CloseHandle(hFile);
+    }
+    else
+        rc = -7;
+    return rc;
+}
+
+/**
+ * Somewhat similar to fullpath, except that it will fix
+ * the case of existing path components.
+ */
+void
+nt_fullpath(const char *pszPath, char *pszFull, size_t cchFull)
+{
+#if 0
+    static int s_cHits = 0;
+    static int s_cFallbacks = 0;
+#endif
+
+    /*
+     * The simple case, the file / dir / whatever exists and can be
+     * queried without problems and spaces.
+     */
+    if (nt_get_filename_info(pszPath, pszFull, cchFull) == 0)
+    {
+        /** @todo make nt_get_filename_info return spaceless path. */
+        if (strchr(pszFull, ' '))
+            w32_fixcase(pszFull);
+#if 0
+        fprintf(stdout, "nt #%d - %s\n", ++s_cHits, pszFull);
+        fprintf(stdout, "   #%d - %s\n", s_cHits, pszPath);
+#endif
+        return;
+    }
+    if (g_pfnNtQueryInformationFile)
+    {
+        /* do _fullpath and drop off path elements until we get a hit... - later */
+    }
+
+    /*
+     * For now, simply fall back on the old method.
+     */
+    _fullpath(pszFull, pszPath, cchFull);
+    w32_fixcase(pszFull);
+#if 0
+    fprintf(stderr, "fb #%d - %s\n", ++s_cFallbacks, pszFull);
+    fprintf(stderr, "   #%d - %s\n", s_cFallbacks, pszPath);
+#endif
+}
+
diff --git a/src/lib/nt_fullpath.h b/src/lib/nt_fullpath.h
new file mode 100644
index 0000000..3e3f83f
--- /dev/null
+++ b/src/lib/nt_fullpath.h
@@ -0,0 +1,42 @@
+/* $Id: nt_fullpath.h 2849 2016-08-30 14:28:46Z bird $ */
+/** @file
+ * fixcase - fixes the case of paths, windows specific.
+ */
+
+/*
+ * Copyright (c) 2004-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef ___lib_nt_fullpath_h___
+#define ___lib_nt_fullpath_h___
+
+#ifdef __cpluslus
+extern "C"
+#endif
+
+extern void nt_fullpath(const char *pszPath, char *pszFull, size_t cchFull);
+extern void nt_fullpath_cached(const char *pszPath, char *pszFull, size_t cchFull);
+
+
+#ifdef __cpluslus
+}
+#endif
+
+#endif
+
diff --git a/src/lib/nt_fullpath_cached.c b/src/lib/nt_fullpath_cached.c
new file mode 100644
index 0000000..3692f0d
--- /dev/null
+++ b/src/lib/nt_fullpath_cached.c
@@ -0,0 +1,136 @@
+/* $Id: nt_fullpath_cached.c 2849 2016-08-30 14:28:46Z bird $ */
+/** @file
+ * fixcase - fixes the case of paths, windows specific.
+ */
+
+/*
+ * Copyright (c) 2004-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <Windows.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <direct.h>
+#include <assert.h>
+
+#include "nt_fullpath.h"
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct NTFULLPATHENTRY
+{
+    /** Pointer to the next entry with the same hash table index. */
+    struct NTFULLPATHENTRY *pNext;
+    /** The input hash. */
+    unsigned                uHash;
+    /** The input length. */
+    unsigned                cchInput;
+    /** Length of the result. */
+    unsigned                cchResult;
+    /** The result string (stored immediately after this structure). */
+    const char             *pszResult;
+    /** The input string (variable length). */
+    char                    szInput[1];
+} NTFULLPATHENTRY;
+typedef NTFULLPATHENTRY *PNTFULLPATHENTRY;
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** Number of result in the nt_fullpath cache.  */
+size_t              g_cNtFullPathHashEntries = 0;
+/** Number of bytes used for nt_fullpath cache result entries. */
+size_t              g_cbNtFullPathHashEntries = 0;
+/** Number of hash table collsioins in the nt_fullpath cache.  */
+size_t              g_cNtFullPathHashCollisions = 0;
+/** Hash table. */
+PNTFULLPATHENTRY    g_apNtFullPathHashTab[16381];
+
+
+/**
+ * A nt_fullpath frontend which caches the result of previous calls.
+ */
+void
+nt_fullpath_cached(const char *pszPath, char *pszFull, size_t cchFull)
+{
+    PNTFULLPATHENTRY        pEntry;
+    unsigned                cchInput;
+    unsigned                idx;
+    unsigned                cchResult;
+
+    /* We use the sdbm hash algorithm here (see kDep.c for full details). */
+    unsigned const char    *puch = (unsigned const char *)pszPath;
+    unsigned                uHash = 0;
+    unsigned                uChar;
+    while ((uChar = *puch++) != 0)
+        uHash = uChar + (uHash << 6) + (uHash << 16) - uHash;
+
+    cchInput = (unsigned)((uintptr_t)&puch[-1] - (uintptr_t)pszPath);
+
+    /* Do the cache lookup. */
+    idx = uHash % (sizeof(g_apNtFullPathHashTab) / sizeof(g_apNtFullPathHashTab[0]));
+    for (pEntry = g_apNtFullPathHashTab[idx]; pEntry != NULL; pEntry = pEntry->pNext)
+        if (   pEntry->uHash == uHash
+            && pEntry->cchInput == cchInput
+            && memcmp(pEntry->szInput, pszPath, cchInput) == 0)
+        {
+            if (cchFull > pEntry->cchResult)
+                memcpy(pszFull, pEntry->pszResult, pEntry->cchResult + 1);
+            else
+            {
+                assert(0);
+                memcpy(pszFull, pEntry->pszResult, cchFull);
+                pszFull[cchFull - 1] = '\0';
+            }
+            return;
+        }
+
+    /* Make the call... */
+    nt_fullpath(pszPath, pszFull, cchFull);
+
+    /* ... and cache the result. */
+    cchResult = (unsigned)strlen(pszFull);
+    pEntry = malloc(sizeof(*pEntry) + cchInput + cchResult + 1);
+    if (pEntry)
+    {
+        g_cbNtFullPathHashEntries += sizeof(*pEntry) + cchInput + cchResult + 1;
+        pEntry->cchInput  = cchInput;
+        pEntry->cchResult = cchResult;
+        pEntry->pszResult = &pEntry->szInput[cchInput + 1];
+        pEntry->uHash     = uHash;
+        memcpy(pEntry->szInput, pszPath, cchInput + 1);
+        memcpy((char *)pEntry->pszResult, pszFull, cchResult + 1);
+
+        pEntry->pNext = g_apNtFullPathHashTab[idx];
+        if (pEntry->pNext)
+            g_cNtFullPathHashCollisions++;
+        g_apNtFullPathHashTab[idx] = pEntry;
+
+        g_cNtFullPathHashEntries++;
+    }
+}
+
diff --git a/src/lib/quote_argv.c b/src/lib/quote_argv.c
new file mode 100644
index 0000000..b641ab3
--- /dev/null
+++ b/src/lib/quote_argv.c
@@ -0,0 +1,218 @@
+/* $Id: quote_argv.c 3235 2018-10-28 14:15:29Z bird $ */
+/** @file
+ * quote_argv - Correctly quote argv for spawn, windows specific.
+ */
+
+/*
+ * Copyright (c) 2007-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "quote_argv.h"
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#ifndef KBUILD_OS_WINDOWS
+# error "KBUILD_OS_WINDOWS not defined"
+#endif
+
+
+/**
+ * Checks if this is an Watcom option where we must just pass thru the string
+ * as-is.
+ *
+ * This is currnetly only used for -d (defining macros).
+ *
+ * @returns 1 if pass-thru, 0 if not.
+ * @param   pszArg          The argument to consider.
+ */
+static int isWatcomPassThruOption(const char *pszArg)
+{
+    char ch = *pszArg++;
+    if (ch != '-' && ch != '/')
+        return 0;
+    ch = *pszArg++;
+    switch (ch)
+    {
+        /* Example: -d+VAR="string-value" */
+        case 'd':
+            if (ch == '+')
+                ch = *pszArg++;
+            if (!isalpha(ch) && ch != '_')
+                return 0;
+            return 1;
+
+        default:
+            return 0;
+    }
+}
+
+
+/**
+ * Replaces arguments in need of quoting.
+ *
+ * For details on how MSC parses the command line, see "Parsing C Command-Line
+ * Arguments": http://msdn.microsoft.com/en-us/library/a1y7w461.aspx
+ *
+ * @returns 0 on success, -1 if out of memory.
+ * @param   argc                The argument count.
+ * @param   argv                The argument vector.
+ * @param   fWatcomBrainDamage  Set if we're catering for wcc, wcc386 or similar
+ *                              OpenWatcom tools.  They seem to follow some
+ *                              ancient or home made quoting convention.
+ * @param   fFreeOrLeak         Whether to free replaced argv members
+ *                              (non-zero), or just leak them (zero).  This
+ *                              depends on which argv you're working on.
+ *                              Suggest doing the latter if it's main()'s argv.
+ */
+int quote_argv(int argc, char **argv, int fWatcomBrainDamage, int fFreeOrLeak)
+{
+    int i;
+    for (i = 0; i < argc; i++)
+    {
+        char *const pszOrgOrg = argv[i];
+        const char *pszOrg    = pszOrgOrg;
+        size_t      cchOrg    = strlen(pszOrg);
+        const char *pszQuotes = (const char *)memchr(pszOrg, '"', cchOrg);
+        const char *pszProblem = NULL;
+        if (   pszQuotes
+            || cchOrg == 0
+            || (pszProblem = (const char *)memchr(pszOrg, ' ',  cchOrg)) != NULL
+            || (pszProblem = (const char *)memchr(pszOrg, '\t', cchOrg)) != NULL
+            || (pszProblem = (const char *)memchr(pszOrg, '\n', cchOrg)) != NULL
+            || (pszProblem = (const char *)memchr(pszOrg, '\r', cchOrg)) != NULL
+            || (pszProblem = (const char *)memchr(pszOrg, '&',  cchOrg)) != NULL
+            || (pszProblem = (const char *)memchr(pszOrg, '>',  cchOrg)) != NULL
+            || (pszProblem = (const char *)memchr(pszOrg, '<',  cchOrg)) != NULL
+            || (pszProblem = (const char *)memchr(pszOrg, '|',  cchOrg)) != NULL
+            || (pszProblem = (const char *)memchr(pszOrg, '%',  cchOrg)) != NULL
+            || (pszProblem = (const char *)memchr(pszOrg, '\'', cchOrg)) != NULL
+            || (   !fWatcomBrainDamage
+                && (pszProblem = (const char *)memchr(pszOrg, '=',  cchOrg)) != NULL)
+            || (   fWatcomBrainDamage
+                && (pszProblem = (const char *)memchr(pszOrg, '\\', cchOrg)) != NULL)
+            )
+        {
+            char   ch;
+            int    fComplicated = pszQuotes || (cchOrg > 0 && pszOrg[cchOrg - 1] == '\\');
+            size_t cchNew       = fComplicated ? cchOrg * 2 + 2 : cchOrg + 2;
+            char  *pszNew       = (char *)malloc(cchNew + 1 /*term*/);
+            if (!pszNew)
+                return -1;
+
+            argv[i] = pszNew;
+
+            /* Watcom does not grok stuff like "-i=c:\program files\watcom\h",
+               it think it's a source specification. In that case the quote
+               must follow the equal sign. */
+            if (fWatcomBrainDamage)
+            {
+                size_t cchUnquoted  = 0;
+                if (pszOrg[0] == '@') /* Response file quoting: @"file name.rsp" */
+                    cchUnquoted = 1;
+                else if (pszOrg[0] == '-' || pszOrg[0] == '/') /* Switch quoting. */
+                {
+                    const char *pszNeedQuoting;
+                    if (isWatcomPassThruOption(pszOrg))
+                    {
+                        argv[i] = pszOrgOrg;
+                        free(pszNew);
+                        continue; /* No quoting needed, skip to the next argument. */
+                    }
+
+                    pszNeedQuoting = (const char *)memchr(pszOrg, '=', cchOrg); /* For -i=dir and similar. */
+                    if (   pszNeedQuoting == NULL
+                        || (uintptr_t)pszNeedQuoting > (uintptr_t)(pszProblem ? pszProblem : pszQuotes))
+                        pszNeedQuoting = pszProblem ? pszProblem : pszQuotes;
+                    else
+                        pszNeedQuoting++;
+                    cchUnquoted = pszNeedQuoting - pszOrg;
+                }
+                if (cchUnquoted)
+                {
+                    memcpy(pszNew, pszOrg, cchUnquoted);
+                    pszNew += cchUnquoted;
+                    pszOrg += cchUnquoted;
+                    cchOrg -= cchUnquoted;
+                }
+            }
+
+            *pszNew++ = '"';
+            if (fComplicated)
+            {
+                while ((ch = *pszOrg++) != '\0')
+                {
+                    if (ch == '"')
+                    {
+                        *pszNew++ = '\\';
+                        *pszNew++ = '"';
+                    }
+                    else if (ch == '\\')
+                    {
+                        /* Backslashes are a bit complicated, they depends on
+                           whether a quotation mark follows them or not.  They
+                           only require escaping if one does. */
+                        unsigned cSlashes = 1;
+                        while ((ch = *pszOrg) == '\\')
+                        {
+                            pszOrg++;
+                            cSlashes++;
+                        }
+                        if (ch == '"' || ch == '\0') /* We put a " at the EOS. */
+                        {
+                            while (cSlashes-- > 0)
+                            {
+                                *pszNew++ = '\\';
+                                *pszNew++ = '\\';
+                            }
+                        }
+                        else
+                            while (cSlashes-- > 0)
+                                *pszNew++ = '\\';
+                    }
+                    else
+                        *pszNew++ = ch;
+                }
+            }
+            else
+            {
+                memcpy(pszNew, pszOrg, cchOrg);
+                pszNew += cchOrg;
+            }
+            *pszNew++ = '"';
+            *pszNew = '\0';
+
+            if (fFreeOrLeak)
+                free(pszOrgOrg);
+        }
+    }
+
+    /*for (i = 0; i < argc; i++) fprintf(stderr, "argv[%u]=%s;;\n", i, argv[i]);*/
+    return 0;
+}
+
diff --git a/src/lib/quote_argv.h b/src/lib/quote_argv.h
new file mode 100644
index 0000000..6e0a13e
--- /dev/null
+++ b/src/lib/quote_argv.h
@@ -0,0 +1,39 @@
+/* $Id: quote_argv.h 2912 2016-09-14 13:36:15Z bird $ */
+/** @file
+ * quote_argv - Correctly quote argv for spawn, windows specific.
+ */
+
+/*
+ * Copyright (c) 2007-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+#ifndef ___quote_argv_h___
+#define ___quote_argv_h___
+
+#include "mytypes.h"
+extern int quote_argv(int argc, char **argv, int fWatcomBrainDamage, int fFreeOrLeak);
+
+#endif
+
diff --git a/src/lib/quoted_spawn.c b/src/lib/quoted_spawn.c
new file mode 100644
index 0000000..f06aca4
--- /dev/null
+++ b/src/lib/quoted_spawn.c
@@ -0,0 +1,282 @@
+/* $Id: quoted_spawn.c 2851 2016-08-31 17:30:52Z bird $ */
+/** @file
+ * quote_spawn - Correctly Quote The _spawnvp arguments, windows specific.
+ */
+
+/*
+ * Copyright (c) 2010-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include "quoted_spawn.h"
+
+#include <process.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+
+
+/**
+ * Tests if a strings needs quoting.
+ *
+ * @returns 1 if needs, 0 if it doesn't.
+ * @param   pszArg              The string in question.
+ */
+static int quoted_spawn_need_quoting(const char *pszArg)
+{
+    for (;;)
+        switch (*pszArg++)
+        {
+            case 0:
+                return 0;
+
+            case ' ':
+            case '"':
+            case '&':
+            case '>':
+            case '<':
+            case '|':
+            case '%':
+            /* Quote the control chars (tab is included). */
+            case 1:
+            case 2:
+            case 3:
+            case 4:
+            case 5:
+            case 6:
+            case 7:
+            case 8:
+            case 9:
+            case 10:
+            case 11:
+            case 13:
+            case 14:
+            case 15:
+            case 16:
+            case 17:
+            case 18:
+            case 19:
+            case 20:
+            case 21:
+            case 22:
+            case 23:
+            case 24:
+            case 25:
+            case 26:
+            case 27:
+            case 28:
+            case 29:
+            case 30:
+            case 31:
+                return 1;
+        }
+}
+
+/**
+ * Frees any quoted arguments.
+ *
+ * @returns NULL.
+ * @param   papszArgsOrg    The original argument vector.
+ * @param   papszArgsQuoted The quoted argument vector.
+ * @param   cArgs           The number of arguments in the vector.
+ */
+static const char * const *
+quoted_spawn_free(const char * const *papszArgsOrg, const char * const *papszArgsQuoted, unsigned cArgs)
+{
+    if (   papszArgsOrg    != papszArgsQuoted
+        && papszArgsQuoted != NULL)
+    {
+        int      iSavedErrno = errno; /* A bit of paranoia. */
+        unsigned i           = cArgs;
+        while (i-- > 0)
+            if (papszArgsQuoted[i] != papszArgsOrg[i])
+                free((char *)papszArgsQuoted[i]);
+        free((void *)papszArgsQuoted);
+        errno = iSavedErrno;
+    }
+    return NULL;
+}
+
+/**
+ * Quote an argument string.
+ *
+ * @returns Quoted argument string (new).
+ * @param   pszArgOrg           The original string.
+ */
+static const char *quoted_spawn_quote_arg(const char *pszArgOrg)
+{
+    size_t cchArgOrg = strlen(pszArgOrg);
+    size_t cchArgNew = 1 + cchArgOrg * 2 + 1 + 1;
+    char  *pszArgNew = malloc(cchArgNew);
+    if (pszArgNew)
+    {
+        char ch;
+        char *pszDst = pszArgNew;
+        *pszDst++ = '"';
+        while ((ch = *pszArgOrg++))
+        {
+            if (ch == '\\')
+            {
+                size_t cSlashes = 1;
+                for (;;)
+                {
+                    *pszDst++ = '\\';
+                     ch = *pszArgOrg;
+                     if (ch != '\\')
+                         break;
+                     pszArgOrg++;
+                     cSlashes++;
+                }
+                if (ch == '"' || ch == '\0')
+                {
+                    while (cSlashes-- > 0)
+                        *pszDst++ = '\\';
+                    if (ch == '\0')
+                        break;
+                    *pszDst++ = '\\';
+                    *pszDst++ = '"';
+                }
+            }
+            else if (ch == '"')
+            {
+                *pszDst++ = '\\';
+                *pszDst++ = '"';
+            }
+            else
+                *pszDst++ = ch;
+        }
+        *pszDst++ = '"';
+        *pszDst = '\0';
+        assert((size_t)(pszDst - pszArgNew) < cchArgNew - 1);
+    }
+    return pszArgNew;
+}
+
+/**
+ * Quotes the arguments in an argument vector, producing a new vector.
+ *
+ * @returns The quoted argument vector.
+ * @param   papszArgsOrg    The vector which arguments to quote.
+ * @param   iFirstArg       The first argument that needs quoting.
+ * @param   pcArgs          Where to return the argument count.
+ */
+static const char * const *
+quoted_spawn_quote_vector(const char * const *papszArgsOrg, unsigned iFirstArg, unsigned *pcArgs)
+{
+    const char **papszArgsQuoted;
+    unsigned     cArgs;
+    unsigned     iArg;
+
+    /* finish counting them and allocate the result array. */
+    cArgs = iFirstArg;
+    while (papszArgsOrg[cArgs])
+        cArgs++;
+    *pcArgs = cArgs;
+
+    papszArgsQuoted = (const char **)calloc(sizeof(const char *), cArgs + 1);
+    if (!papszArgsQuoted)
+        return NULL;
+
+    /* Process the arguments up to the first quoted one (no need to
+       re-examine them). */
+    for (iArg = 0; iArg < iFirstArg; iArg++)
+        papszArgsQuoted[iArg] = papszArgsOrg[iArg];
+
+    papszArgsQuoted[iArg] = quoted_spawn_quote_arg(papszArgsOrg[iArg]);
+    if (!papszArgsQuoted[iArg])
+        return quoted_spawn_free(papszArgsOrg, papszArgsQuoted, cArgs);
+
+    /* Process the remaining arguments. */
+    while (iArg < cArgs)
+    {
+        if (!quoted_spawn_need_quoting(papszArgsOrg[iArg]))
+            papszArgsQuoted[iArg] = papszArgsOrg[iArg];
+        else
+        {
+            papszArgsQuoted[iArg] = quoted_spawn_quote_arg(papszArgsOrg[iArg]);
+            if (!papszArgsQuoted[iArg])
+                return quoted_spawn_free(papszArgsOrg, papszArgsQuoted, cArgs);
+        }
+        iArg++;
+    }
+
+    return papszArgsQuoted;
+}
+
+/**
+ * Checks if any of the arguments in the vector needs quoting and does the job.
+ *
+ * @returns If anything needs quoting a new vector is returned, otherwise the
+ *          original is returned.
+ * @param   papszArgsOrg    The argument vector to check.
+ * @param   pcArgs          Where to return the argument count.
+ */
+static const char * const *
+quoted_spawn_maybe_quote(const char * const *papszArgsOrg, unsigned *pcArgs)
+{
+    unsigned iArg;
+    for (iArg = 0; papszArgsOrg[iArg]; iArg++)
+        if (quoted_spawn_need_quoting(papszArgsOrg[iArg]))
+            return quoted_spawn_quote_vector(papszArgsOrg, iArg, pcArgs);
+    *pcArgs = iArg;
+    return papszArgsOrg;
+}
+
+/**
+ * Wrapper for _spawnvp.
+ *
+ * @returns The process handle, see _spawnvp for details.
+ * @param   fMode               The spawn mode, see _spawnvp for details.
+ * @param   pszExecPath         The path to the executable, or just the name
+ *                              if a PATH search is desired.
+ * @param   papszArgs           The arguments to pass to the new process.
+ */
+intptr_t quoted_spawnvp(int fMode, const char *pszExecPath, const char * const *papszArgs)
+{
+    intptr_t            hProcess;
+    unsigned            cArgs;
+    const char * const *papszArgsQuoted = quoted_spawn_maybe_quote(papszArgs, &cArgs);
+    if (papszArgsQuoted)
+    {
+//unsigned i;
+//fprintf(stderr,  "debug: spawning '%s'\n",  pszExecPath);
+//for (i = 0; i < cArgs; i++)
+//    fprintf(stderr,  "debug: #%02u: '%s'\n",  i,  papszArgsQuoted[i]);
+        hProcess = _spawnvp(fMode, pszExecPath, papszArgsQuoted);
+        quoted_spawn_free(papszArgs, papszArgsQuoted, cArgs);
+    }
+    else
+    {
+        errno = ENOMEM;
+        hProcess = -1;
+    }
+
+    return hProcess;
+}
+
diff --git a/src/lib/quoted_spawn.h b/src/lib/quoted_spawn.h
new file mode 100644
index 0000000..3c2ccb6
--- /dev/null
+++ b/src/lib/quoted_spawn.h
@@ -0,0 +1,39 @@
+/* $Id: quoted_spawn.h 2851 2016-08-31 17:30:52Z bird $ */
+/** @file
+ * quote_spawn - Correctly Quote The _spawnvp arguments, windows specific.
+ */
+
+/*
+ * Copyright (c) 2010-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+#ifndef ___quoted_spawn_h___
+#define ___quoted_spawn_h___
+
+#include "mytypes.h"
+intptr_t quoted_spawnvp(int fMode, const char *pszExecPath, const char * const *papszArgs);
+
+#endif
+
diff --git a/src/lib/restartable-syscall-wrappers.c b/src/lib/restartable-syscall-wrappers.c
new file mode 100644
index 0000000..9f593a5
--- /dev/null
+++ b/src/lib/restartable-syscall-wrappers.c
@@ -0,0 +1,287 @@
+/* $Id: restartable-syscall-wrappers.c 2851 2016-08-31 17:30:52Z bird $ */
+/** @file
+ * restartable-syscall-wrappers.c - Workaround for annoying S11 "features".
+ *
+ * The symptoms are that open or mkdir occationally fails with EINTR when
+ * receiving SIGCHLD at the wrong time.  With a enough cores, this start
+ * happening on a regular basis.
+ *
+ * The workaround here is to create our own wrappers for these syscalls which
+ * will restart the syscall when appropriate.  This depends on the libc
+ * providing alternative names for the syscall entry points.
+ */
+
+/*
+ * Copyright (c) 2011-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <sys/types.h>
+#ifdef KBUILD_OS_SOLARIS
+# include <string.h> /* Try drag in feature_tests.h. */
+# include <ctype.h>
+# undef  _RESTRICT_KYWD
+# define _RESTRICT_KYWD 
+# undef  __PRAGMA_REDEFINE_EXTNAME
+#endif
+#include <sys/stat.h>
+#include <utime.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** Mangle a syscall name to it's weak alias. */
+#ifdef KBUILD_OS_SOLARIS
+# define WRAP(a_name) _##a_name
+#elif defined(KBUILD_OS_LINUX)
+# define WRAP(a_name) __##a_name
+#else
+# error "Port Me"
+#endif
+
+/** Mangle a syscall name with optional '64' suffix. */
+#if !defined(_LP64) && _FILE_OFFSET_BITS == 64
+# define WRAP64(a_name) WRAP(a_name)##64
+#else
+# define WRAP64(a_name) WRAP(a_name)
+#endif
+
+/** Check whether errno indicates restart.  */
+#ifdef ERESTART
+# define SHOULD_RESTART() (errno == EINTR || errno == ERESTART)
+#else
+# define SHOULD_RESTART() (errno == EINTR)
+#endif
+
+/** Used by XSTR. */
+#define XSTR_INNER(x)   #x
+/** Returns the expanded argument as a string. */
+#define XSTR(x)         XSTR_INNER(x)
+
+
+static int dlsym_libc(const char *pszSymbol, void **ppvSym)
+{
+    static void *s_pvLibc = NULL;
+    void        *pvLibc;
+    void        *pvSym;
+
+    /*
+     * Use the RTLD_NEXT dl feature if present, it's designed for doing
+     * exactly what we want here.
+     */
+#ifdef RTLD_NEXT
+    pvSym = dlsym(RTLD_NEXT, pszSymbol);
+    if (pvSym)
+    {
+        *ppvSym = pvSym;
+        return 0;
+    }
+#endif
+
+    /*
+     * Open libc.
+     */
+    pvLibc = s_pvLibc;
+    if (!pvLibc)
+    {
+#ifdef RTLD_NOLOAD
+        unsigned fFlags = RTLD_NOLOAD | RTLD_NOW;
+#else
+        unsigned fFlags = RTLD_GLOBAL | RTLD_NOW;
+#endif
+#ifdef KBUILD_OS_LINUX
+        pvLibc = dlopen("/lib/libc.so.6", fFlags);
+#else
+        pvLibc = dlopen("/lib/libc.so", fFlags);
+#endif
+        if (!pvLibc)
+        {
+            fprintf(stderr, "restartable-syscall-wrappers: failed to dlopen libc for resolving %s: %s\n",
+                    pszSymbol, dlerror());
+            errno = ENOSYS;
+            return -1;
+        }
+        /** @todo check standard symbol? */
+    }
+
+    /*
+     * Resolve the symbol.
+     */
+    pvSym = dlsym(pvLibc, pszSymbol);
+    if (!pvSym)
+    {
+        fprintf(stderr, "restartable-syscall-wrappers: failed to resolve %s: %s\n",
+                pszSymbol, dlerror());
+        errno = ENOSYS;
+        return -1;
+    }
+
+    *ppvSym = pvSym;
+    return 0;
+}
+
+
+#undef open
+int open(const char *pszPath, int fFlags, ...)
+{
+    mode_t      fMode;
+    va_list     va;
+    int         fd;
+    static union
+    {
+        int (* pfnReal)(const char *, int, ...);
+        void *pvSym;
+    } s_u;
+
+    if (   !s_u.pfnReal
+        && dlsym_libc("open", &s_u.pvSym) != 0)
+        return -1;
+
+    va_start(va, fFlags);
+    fMode = va_arg(va, mode_t);
+    va_end(va);
+
+    do
+        fd = s_u.pfnReal(pszPath, fFlags, fMode);
+    while (fd == -1 && SHOULD_RESTART());
+    return fd;
+}
+
+#undef open64
+int open64(const char *pszPath, int fFlags, ...)
+{
+    mode_t      fMode;
+    va_list     va;
+    int         fd;
+    static union
+    {
+        int (* pfnReal)(const char *, int, ...);
+        void *pvSym;
+    } s_u;
+
+    if (   !s_u.pfnReal
+        && dlsym_libc("open64", &s_u.pvSym) != 0)
+        return -1;
+
+    va_start(va, fFlags);
+    fMode = va_arg(va, mode_t);
+    va_end(va);
+
+    do
+        fd = s_u.pfnReal(pszPath, fFlags, fMode);
+    while (fd == -1 && SHOULD_RESTART());
+    return fd;
+}
+
+#define WRAP_FN(a_Name, a_ParamsWithTypes, a_ParamsNoType, a_RetType, a_RetFailed) \
+    a_RetType a_Name a_ParamsWithTypes \
+    { \
+        static union \
+        { \
+            a_RetType (* pfnReal) a_ParamsWithTypes; \
+            void *pvSym; \
+        } s_u; \
+        a_RetType rc; \
+        \
+        if (   !s_u.pfnReal \
+            && dlsym_libc(#a_Name, &s_u.pvSym) != 0) \
+            return a_RetFailed; \
+        \
+        do \
+            rc = s_u.pfnReal a_ParamsNoType; \
+        while (rc == a_RetFailed && SHOULD_RESTART()); \
+        return rc; \
+    } typedef int ignore_semi_colon_##a_Name
+
+#undef mkdir
+WRAP_FN(mkdir, (const char *pszPath, mode_t fMode), (pszPath, fMode), int, -1);
+
+#undef rmdir
+WRAP_FN(rmdir, (const char *pszPath, mode_t fMode), (pszPath, fMode), int, -1);
+
+#undef unlink
+WRAP_FN(unlink, (const char *pszPath), (pszPath), int, -1);
+
+#undef remove
+WRAP_FN(remove, (const char *pszPath), (pszPath), int, -1);
+
+#undef symlink
+WRAP_FN(symlink, (const char *pszFrom, const char *pszTo), (pszFrom, pszTo), int, -1);
+
+#undef link
+WRAP_FN(link, (const char *pszFrom, const char *pszTo), (pszFrom, pszTo), int, -1);
+
+#undef stat
+WRAP_FN(stat, (const char *pszPath, struct stat *pStBuf), (pszPath, pStBuf), int, -1);
+#undef lstat
+WRAP_FN(lstat, (const char *pszPath, struct stat *pStBuf), (pszPath, pStBuf), int, -1);
+
+#undef stat64
+WRAP_FN(stat64, (const char *pszPath, struct stat64 *pStBuf), (pszPath, pStBuf), int, -1);
+#undef lstat64
+WRAP_FN(lstat64, (const char *pszPath, struct stat64 *pStBuf), (pszPath, pStBuf), int, -1);
+
+#undef read
+WRAP_FN(read, (int fd, void *pvBuf, size_t cbBuf), (fd, pvBuf, cbBuf), ssize_t, -1);
+
+#undef write
+WRAP_FN(write, (int fd, void *pvBuf, size_t cbBuf), (fd, pvBuf, cbBuf), ssize_t, -1);
+
+#undef fopen
+WRAP_FN(fopen, (const char *pszPath, const char *pszMode), (pszPath, pszMode), FILE *, NULL);
+#undef fopen64
+WRAP_FN(fopen64, (const char *pszPath, const char *pszMode), (pszPath, pszMode), FILE *, NULL);
+
+#undef chmod
+WRAP_FN(chmod, (const char *pszPath, mode_t fMode), (pszPath, fMode), int, -1);
+#undef lchmod
+WRAP_FN(lchmod, (const char *pszPath, mode_t fMode), (pszPath, fMode), int, -1);
+
+#undef chown
+WRAP_FN(chown, (const char *pszPath, uid_t uid, gid_t gid), (pszPath, uid, gid), int, -1);
+#undef lchown
+WRAP_FN(lchown, (const char *pszPath, uid_t uid, gid_t gid), (pszPath, uid, gid), int, -1);
+
+#undef utime
+WRAP_FN(utime, (const char *pszPath, const struct utimbuf *pTimes), (pszPath, pTimes), int, -1);
+
+#undef utimes
+WRAP_FN(utimes, (const char *pszPath, const struct timeval *paTimes), (pszPath, paTimes), int, -1);
+
+#undef pathconf
+WRAP_FN(pathconf, (const char *pszPath, int iCfgNm), (pszPath, iCfgNm), long, -1);
+
+#undef readlink
+WRAP_FN(readlink, (const char *pszPath, char *pszBuf, size_t cbBuf), (pszPath, pszBuf, cbBuf), ssize_t, -1);
+
diff --git a/src/lib/startuphacks-win.c b/src/lib/startuphacks-win.c
new file mode 100644
index 0000000..9ac0dab
--- /dev/null
+++ b/src/lib/startuphacks-win.c
@@ -0,0 +1,205 @@
+/* $Id: startuphacks-win.c 2413 2010-09-11 17:43:04Z bird $ */
+/** @file
+ * kBuild - Alternative argument parser for the windows startup code.
+ *
+ * @todo Update license when SED is updated.
+ */
+
+/*
+ * Copyright (c) 2006-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * parse_args(): Copyright (c) 1992-1998 by Eberhard Mattes
+ *
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <stdlib.h>
+#include <malloc.h>
+#include <Windows.h>
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static int parse_args(const char *pszSrc, char **argv, char *pchPool);
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** argument count found by parse_args(). */
+static int  g_cArgs = 0;
+/** the argument vector, for __getmainargs(). */
+static char **g_papszArgs = NULL;
+
+
+
+int __cdecl _setargv(void)
+{
+    static char s_szProgramName[MAX_PATH + 1];
+    const char *pszCmdLine;
+    char       *pszCmdLineBuf;
+    int         cb;
+
+    /*
+     * Set the program name.
+     */
+    GetModuleFileName(NULL, s_szProgramName, MAX_PATH);
+    s_szProgramName[MAX_PATH] = '\0';
+#if _MSC_VER >= 1400 && !defined(CRTDLL) && !defined(_DLL)
+    _set_pgmptr(s_szProgramName);
+#endif
+
+    /*
+     * Get the commandline, use the program name if nothings available.
+     */
+    pszCmdLine = (const char *)GetCommandLineA();
+    if (!pszCmdLine || !*pszCmdLine)
+        pszCmdLine = s_szProgramName;
+
+    /*
+     * Parse the argument commandline emitting the unix argument vector.
+     */
+    cb = parse_args(pszCmdLine, NULL, NULL);
+    g_papszArgs = malloc(sizeof(*g_papszArgs) * (g_cArgs + 2));
+    if (!g_papszArgs)
+        return -1;
+    pszCmdLineBuf = malloc(cb);
+    if (!pszCmdLineBuf)
+        return -1;
+    parse_args(pszCmdLine, g_papszArgs, pszCmdLineBuf);
+    g_papszArgs[g_cArgs] = g_papszArgs[g_cArgs + 1] = NULL;
+
+    /* set return variables */
+    __argc = g_cArgs;
+    __argv = g_papszArgs;
+    return 0;
+}
+
+
+/* when linking with the crtexe.c, the __getmainargs() call will redo the _setargv job inside the msvc*.dll. */
+int __cdecl __getmainargs(int *pargc, char ***pargv, char ***penvp, int dowildcard, /*_startupinfo*/ void *startinfo)
+{
+    __argc = *pargc = g_cArgs;
+    __argv = *pargv = g_papszArgs;
+    *penvp = _environ;
+    return 0;
+}
+
+#if defined(_M_IX86)
+int (__cdecl * _imp____getmainargs)(int *, char ***, char ***, int, /*_startupinfo*/ void *) = __getmainargs;
+#else
+int (__cdecl * __imp___getmainargs)(int *, char ***, char ***, int, /*_startupinfo*/ void *) = __getmainargs;
+#endif
+
+
+
+/**
+ * Parses the argument string passed in as pszSrc.
+ *
+ * @returns size of the processed arguments.
+ * @param   pszSrc  Pointer to the commandline that's to be parsed.
+ * @param   argv    Pointer to argument vector to put argument pointers in. NULL allowed.
+ * @param   pchPool Pointer to memory pchPool to put the arguments into. NULL allowed.
+ */
+static int parse_args(const char *pszSrc, char **argv, char *pchPool)
+{
+    int   bs;
+    char  chQuote;
+    char *pfFlags;
+    int   cbArgs;
+
+#define PUTC(c) do { ++cbArgs; if (pchPool != NULL) *pchPool++ = (c); } while (0)
+#define PUTV    do { ++g_cArgs; if (argv != NULL) *argv++ = pchPool; } while (0)
+#define WHITE(c) ((c) == ' ' || (c) == '\t')
+
+#define _ARG_DQUOTE   0x01          /* Argument quoted (")                  */
+#define _ARG_RESPONSE 0x02          /* Argument read from response file     */
+#define _ARG_WILDCARD 0x04          /* Argument expanded from wildcard      */
+#define _ARG_ENV      0x08          /* Argument from environment            */
+#define _ARG_NONZERO  0x80          /* Always set, to avoid end of string   */
+
+    g_cArgs = 0; cbArgs = 0;
+
+#if 0
+    /* argv[0] */
+    PUTC((char)_ARG_NONZERO);
+    PUTV;
+    for (;;)
+    {
+        PUTC(*pszSrc);
+        if (*pszSrc == 0)
+            break;
+        ++pszSrc;
+    }
+    ++pszSrc;
+#endif
+
+    for (;;)
+    {
+        while (WHITE(*pszSrc))
+            ++pszSrc;
+        if (*pszSrc == 0)
+            break;
+        pfFlags = pchPool;
+        PUTC((char)_ARG_NONZERO);
+        PUTV;
+        bs = 0; chQuote = 0;
+        for (;;)
+        {
+            if (!chQuote ? (*pszSrc == '"' || *pszSrc == '\'') : *pszSrc == chQuote)
+            {
+                while (bs >= 2)
+                {
+                    PUTC('\\');
+                    bs -= 2;
+                }
+                if (bs & 1)
+                    PUTC(*pszSrc);
+                else
+                {
+                    chQuote = chQuote ? 0 : *pszSrc;
+                    if (pfFlags != NULL)
+                        *pfFlags |= _ARG_DQUOTE;
+                }
+                bs = 0;
+            }
+            else if (*pszSrc == '\\')
+                ++bs;
+            else
+            {
+                while (bs != 0)
+                {
+                    PUTC('\\');
+                    --bs;
+                }
+                if (*pszSrc == 0 || (WHITE(*pszSrc) && !chQuote))
+                    break;
+                PUTC(*pszSrc);
+            }
+            ++pszSrc;
+        }
+        PUTC(0);
+    }
+    return cbArgs;
+}
+
diff --git a/src/lib/test-eintr-bug-1.c b/src/lib/test-eintr-bug-1.c
new file mode 100644
index 0000000..51e0973
--- /dev/null
+++ b/src/lib/test-eintr-bug-1.c
@@ -0,0 +1,89 @@
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+//#define _XOPEN_SOURCE
+//#define _BSD_SOURCE
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <signal.h>
+#include <string.h>
+#include <errno.h>
+
+
+volatile unsigned long g_cInts = 0;
+
+static void SigAlaramHandler(int iSig)
+{
+    g_cInts++;
+    (void)iSig;
+}
+
+
+int main(int argc, char **argv)
+{
+    struct itimerval TmrVal;
+    void (*rcSig)(int);
+    int i;
+    int rc;
+    char szName[256];
+
+    /*
+     * Set up the timer signal.
+     */
+    rcSig = bsd_signal(SIGALRM, SigAlaramHandler);
+    if (rcSig == SIG_ERR)
+    {
+        fprintf(stderr, "bsd_signal failed: %s\n", strerror(errno));
+        return 1;
+    }
+    if (argc == 2) /* testing... */
+        siginterrupt(SIGALRM, 1);
+
+    memset(&TmrVal, '\0', sizeof(TmrVal));
+    TmrVal.it_interval.tv_sec  = TmrVal.it_value.tv_sec  = 0;
+    TmrVal.it_interval.tv_usec = TmrVal.it_value.tv_usec = 1;
+    rc = setitimer(ITIMER_REAL, &TmrVal, NULL);
+    if (rc != 0)
+    {
+        fprintf(stderr, "setitimer failed: %s\n", strerror(errno));
+        return 1;
+    }
+    printf("interval %d.%06d\n", (int)TmrVal.it_interval.tv_sec, (int)TmrVal.it_interval.tv_usec);
+
+    /*
+     * Do path related stuff.
+     */
+    snprintf(szName, sizeof(szName), "%s/fooled/you", argv[0]);
+    for (i = 0; i < 100*1000*1000; i++)
+    {
+        struct stat St;
+        rc = stat(argv[0], &St);
+        if (rc == 0)
+            rc = stat(szName, &St);
+        if (rc != 0 && errno == EINTR)
+        {
+            printf("iteration %d: stat: %s (%u)\n", i, strerror(errno), errno);
+            break;
+        }
+        if ((i % 100000) == 0)
+        {
+            printf("."); 
+            if ((i % 1000000) == 0)
+                printf("[%u/%lu]", i, g_cInts);
+            fflush(stdout);
+        }
+    }
+
+    if (!rc)
+        printf("No EINTR in %d iterations - system is working nicely!\n", i);
+
+    TmrVal.it_interval.tv_sec  = TmrVal.it_value.tv_sec  = 0;
+    TmrVal.it_interval.tv_usec = TmrVal.it_value.tv_usec = 0;
+    setitimer(ITIMER_REAL, &TmrVal, NULL);
+
+    return rc ? 1 : 0;
+}
+
diff --git a/src/lib/test-eintr-bug-2.c b/src/lib/test-eintr-bug-2.c
new file mode 100644
index 0000000..f945d2c
--- /dev/null
+++ b/src/lib/test-eintr-bug-2.c
@@ -0,0 +1,154 @@
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#define _BSD_SOURCE
+#define _GNU_SOURCE
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <time.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <pthread.h>
+#include <signal.h>
+#include <unistd.h>
+
+
+/*******************************************************************************
+*   Global Variables                                                           *
+*******************************************************************************/
+/** The number of signals. */
+static volatile long    g_cSigs = 0;
+/** Number of signals received on threads other than the main one. */
+static volatile long    g_cSigsOther = 0;
+/** Whether to shutdown or not. */
+static volatile int     g_fShutdown = 0;
+/** The handle of the main thread. */
+static pthread_t        g_hMainThread;
+
+
+static void SigHandler(int iSig)
+{
+    g_cSigs++;
+    if (pthread_self() != g_hMainThread)
+        g_cSigsOther++;
+
+    (void)iSig;
+}
+
+
+static void NanoSleep(unsigned long cNanoSecs)
+{
+    struct timespec Ts;
+    Ts.tv_sec  = 0;
+    Ts.tv_nsec = cNanoSecs;
+    nanosleep(&Ts, NULL);
+}
+
+
+static void *ThreadProc(void *pvIgnored)
+{
+    int volatile i = 0;
+    while (!g_fShutdown)
+    {
+//        NanoSleep(850);
+        if (g_fShutdown)
+            break;
+
+        pthread_kill(g_hMainThread, SIGALRM);
+        for (i = 6666; i > 0; i--) 
+            /* nothing */;
+    }
+    return NULL;
+}
+
+
+int main(int argc, char **argv)
+{
+    void (*rcSig)(int);
+    pthread_t hThread;
+    char szName[1024];
+    int i;
+    int rc;
+
+    /*
+     * Set up the signal handlers.
+     */
+    rcSig = bsd_signal(SIGALRM, SigHandler);
+    if (rcSig != SIG_ERR)
+        rcSig = bsd_signal(SIGCHLD, SigHandler);
+    if (rcSig == SIG_ERR)
+    {
+        fprintf(stderr, "bsd_signal failed: %s\n", strerror(errno));
+        return 1;
+    }
+    if (argc == 2) /* testing... */
+    {
+        siginterrupt(SIGALRM, 1);
+        siginterrupt(SIGCHLD, 1);
+    }
+
+    /*
+     * Kick off a thread that will signal us like there was no tomorrow.
+     */
+    g_hMainThread = pthread_self();
+    rc = pthread_create(&hThread, NULL, ThreadProc, NULL);
+    if (rc != 0)
+    {
+        fprintf(stderr, "pthread_create failed: %s\n", strerror(rc));
+        return 1;
+    }
+
+    /*
+     * Do path related stuff.
+     */
+    snprintf(szName, sizeof(szName), "%s-test2", argv[0]);
+    for (i = 0; i < 100*1000*1000; i++)
+    {
+        struct stat St;
+        int fd;
+
+        rc = stat(argv[0], &St);
+        if (rc == 0 || errno != EINTR)
+            rc = stat(szName, &St);
+        if (errno == EINTR && rc != 0)
+        {
+            printf("iteration %d: stat: %u\n", i, errno);
+            break;
+        }
+        
+        fd = open(szName, O_CREAT | O_RDWR, 0666);
+        if (errno == EINTR && fd < 0)
+        {
+            printf("iteration %d: open: %u\n", i, errno);
+            break;
+        }
+        close(fd);
+        rc = unlink(szName);
+        if (errno == EINTR && rc != 0)
+        {
+            printf("iteration %d: unlink: %u\n", i, errno);
+            break;
+        }
+        
+        /* Show progress info */
+        if ((i % 100000) == 0)
+        {
+            printf(".");
+            if ((i % 1000000) == 0)
+                printf("[%d/%ld/%ld]\n", i, g_cSigs, g_cSigsOther);
+            fflush(stdout);
+        }
+    }
+
+    g_fShutdown = 1;
+    if (rc)
+        printf("No EINTR in %d iterations - system is working nicely!\n", i);
+    NanoSleep(10000000);
+
+    return rc ? 1 : 0;
+}
+
diff --git a/src/lib/testcase/dos-text.txt b/src/lib/testcase/dos-text.txt
new file mode 100644
index 0000000..a685cbd
--- /dev/null
+++ b/src/lib/testcase/dos-text.txt
@@ -0,0 +1,35 @@
+Lorem ipsum dolor sit amet, consectetuer adipiscing elit.

+Aenean commodo ligula eget dolor. Aenean massa. Cum sociis

+natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec

+quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat

+massa quis enim. Donec pede justo, fringilla vel, aliquet nec,

+vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet

+a,

+venenatis

+vitae, justo. Nullam dictum

+felis eu pede mollis pretium. Integer tincidunt. Cras dapibus.

+Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo

+ligula, porttitor eu, consequat vitae, eleifend ac, enim.

+

+Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra

+

+

+nulla ut metus varius

+ laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue.

+

+

+   Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus

+	eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum.

+Nam 		quam nunc, blandit vel,

+	luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante

+	tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis

+	ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla

+

+

+

+

+mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales,

+augue

+velit

+cursus

+nunc,

diff --git a/src/lib/testcase/dos2unix-test.cmd b/src/lib/testcase/dos2unix-test.cmd
new file mode 100644
index 0000000..a491e3f
--- /dev/null
+++ b/src/lib/testcase/dos2unix-test.cmd
@@ -0,0 +1,46 @@
+@setlocal

+

+@set INSPROG="E:\kBuild\svn\trunk\out\win.amd64\debug\stage\kBuild\bin\win.amd64\kmk_install.exe"

+@set TMPFILE="e:\tmp\tmp.txt"

+@set CMPPROG="E:\kBuild\svn\trunk\kBuild\bin\win.amd64\kmk_cmp.exe"

+@set RMPROG="E:\kBuild\svn\trunk\kBuild\bin\win.amd64\kmk_rm.exe"

+

+@%RMPROG% -f -- %TMPFILE%

+

+@echo ... dos2unix ...

+%INSPROG% --dos2unix dos-text.txt %TMPFILE%

+@if not errorlevel 0 goto end

+%CMPPROG% -- %TMPFILE% unix-text.txt

+@if not errorlevel 0 goto end

+

+%INSPROG% --dos2unix unix-text.txt %TMPFILE%

+@if not errorlevel 0 goto end

+%CMPPROG% -- %TMPFILE% unix-text.txt

+@if not errorlevel 0 goto end

+

+%INSPROG% --dos2unix mixed-text.txt %TMPFILE%

+@if not errorlevel 0 goto end

+%CMPPROG% -- %TMPFILE% unix-text.txt

+@if not errorlevel 0 goto end

+

+@echo ... unix2dos ...

+%INSPROG% --unix2dos unix-text.txt %TMPFILE%

+@if not errorlevel 0 goto end

+%CMPPROG% -- %TMPFILE% dos-text.txt

+@if not errorlevel 0 goto end

+

+%INSPROG% --unix2dos dos-text.txt %TMPFILE%

+@if not errorlevel 0 goto end

+%CMPPROG% -- %TMPFILE% dos-text.txt

+@if not errorlevel 0 goto end

+

+%INSPROG% --unix2dos mixed-text.txt %TMPFILE%

+@if not errorlevel 0 goto end

+%CMPPROG% -- %TMPFILE% dos-text.txt

+@if not errorlevel 0 goto end

+

+

+@%RMPROG% -f -- %TMPFILE%

+:end

+@endlocal

+

diff --git a/src/lib/testcase/mixed-text.txt b/src/lib/testcase/mixed-text.txt
new file mode 100644
index 0000000..adec2a8
--- /dev/null
+++ b/src/lib/testcase/mixed-text.txt
@@ -0,0 +1,35 @@
+Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
+Aenean commodo ligula eget dolor. Aenean massa. Cum sociis

+natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec

+quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat

+massa quis enim. Donec pede justo, fringilla vel, aliquet nec,
+vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet

+a,

+venenatis

+vitae, justo. Nullam dictum

+felis eu pede mollis pretium. Integer tincidunt. Cras dapibus.

+Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo

+ligula, porttitor eu, consequat vitae, eleifend ac, enim.

+

+Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra

+

+

+nulla ut metus varius

+ laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue.
+

+
+   Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus

+	eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum.

+Nam 		quam nunc, blandit vel,

+	luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante

+	tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis

+	ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla

+
+
+

+

+mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales,

+augue

+velit

+cursus

+nunc,

diff --git a/src/lib/testcase/unix-text.txt b/src/lib/testcase/unix-text.txt
new file mode 100644
index 0000000..5d3ccd5
--- /dev/null
+++ b/src/lib/testcase/unix-text.txt
@@ -0,0 +1,35 @@
+Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
+Aenean commodo ligula eget dolor. Aenean massa. Cum sociis
+natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec
+quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat
+massa quis enim. Donec pede justo, fringilla vel, aliquet nec,
+vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet
+a,
+venenatis
+vitae, justo. Nullam dictum
+felis eu pede mollis pretium. Integer tincidunt. Cras dapibus.
+Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo
+ligula, porttitor eu, consequat vitae, eleifend ac, enim.
+
+Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra
+
+
+nulla ut metus varius
+ laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue.
+
+
+   Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus
+	eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum.
+Nam 		quam nunc, blandit vel,
+	luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante
+	tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis
+	ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla
+
+
+
+
+mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales,
+augue
+velit
+cursus
+nunc,
diff --git a/src/lib/version_compare.c b/src/lib/version_compare.c
new file mode 100644
index 0000000..ee265ff
--- /dev/null
+++ b/src/lib/version_compare.c
@@ -0,0 +1,276 @@
+/* $Id: version_compare.c 3551 2022-01-29 02:57:33Z bird $ */
+/** @file
+ * version_compare - version compare.
+ */
+
+/*
+ * Copyright (c) 2020 knut st. osmundsen <bird-kBuild-spamxx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "version_compare.h"
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+
+/**
+ * Simple quantification of the pre-release designations (alpha2, beta1, rc1).
+ *
+ * @returns ~0U if not a pre-release designation, lesser values if it is.
+ * @note    Case is ignored.
+ */
+static const char *check_release_type(char ch, const char *psz, unsigned *puValue)
+{
+    const char * const pszStart = psz;
+    *puValue = ~0U;
+    switch (ch)
+    {
+        default:
+            return psz;
+
+        case 'r':
+        case 'R':
+            ch = *psz++;
+            if (ch != 'c' && ch != 'C')
+                return pszStart;
+            *puValue = ~0U/4 * 2;
+            break;
+        case 'b':
+        case 'B':
+            ch = *psz++;
+            if (ch != 'e' && ch != 'E')
+                return pszStart;
+            ch = *psz++;
+            if (ch != 't' && ch != 'T')
+                return pszStart;
+            ch = *psz++;
+            if (ch != 'a' && ch != 'A')
+                return pszStart;
+            *puValue = ~0U/4;
+            break;
+        case 'a':
+        case 'A':
+            ch = *psz++;
+            if (ch != 'l' && ch != 'L')
+                return pszStart;
+            ch = *psz++;
+            if (ch != 'p' && ch != 'P')
+                return pszStart;
+            ch = *psz++;
+            if (ch != 'h' && ch != 'H')
+                return pszStart;
+            ch = *psz++;
+            if (ch != 'a' && ch != 'A')
+                return pszStart;
+            *puValue = 0;
+            break;
+    }
+
+    /* The next must be an non-alpha character, if a digit we add it to the value.  */
+    ch = *psz;
+    if (isdigit(ch))
+    {
+        long int lSub = strtol(psz, (char **)&psz, 10);
+        if (lSub >= ~0U / 4)
+            lSub = ~0U / 4 - 1;
+        *puValue += (unsigned)lSub;
+    }
+    else if (isalpha(ch))
+        return pszStart;
+    return psz;
+}
+
+
+/**
+ * Deals with returns, mainly from the string compare part.
+ */
+static int compare_failed(char ch1, char ch2)
+{
+    if (ch1 == '~')
+        return -1;
+    if (ch2 == '~')
+        return 1;
+    if (ch1 == '\0' || ch1 == '/') /* treat '/' similar to '\0' to deal with the v14.2/ vs v14.2.11.9/ case.  */
+        return -1;
+    if (ch2 == '\0' || ch2 == '/')
+        return 1;
+    if (isdigit(ch1))
+        return -1;
+    if (isdigit(ch2))
+        return 1;
+    if (isalpha(ch1))
+        return isalpha(ch2) ? (int)ch1 - (int)ch2 : -1;
+    if (isalpha(ch2))
+        return 1;
+    return (int)ch1 - (int)ch2;
+}
+
+
+int version_compare(const char *psz1, const char *psz2)
+{
+    for (;;)
+    {
+        int diff;
+
+        /* Work non-digits:  */
+        char ch1 = *psz1++;
+        char ch2 = *psz2++;
+        for (;;)
+        {
+            if (ch1 == ch2)
+            {
+                if (ch1 != '\0')
+                {
+                    if (isdigit(ch1))
+                        break;
+                    ch1 = *psz1++;
+                    ch2 = *psz2++;
+                }
+                else
+                    return 0;
+            }
+            else if (isdigit(ch1) && isdigit(ch2))
+                break;
+            else
+                return compare_failed(ch1, ch2);
+        }
+
+        /* Skip leading zeros */
+        while (ch1 == '0')
+            ch1 = *psz1++;
+
+        while (ch2 == '0')
+            ch2 = *psz2++;
+
+        /* Compare digits. */
+        for (diff = 0;;)
+        {
+            if (isdigit(ch1))
+            {
+                if (isdigit(ch2))
+                {
+                    if (diff == 0)
+                        diff = (int)ch1 - (int)ch2;
+                    ch1 = *psz1++;
+                    ch2 = *psz2++;
+                }
+                else
+                    return 1; /* The number in psz1 is longer and therefore larger. */
+            }
+            else if (isdigit(ch2))
+                return -1;    /* The number in psz1 is shorter and therefore smaller. */
+            else if (diff != 0)
+                return diff;
+            else
+                break;
+        }
+
+        /* Neither ch1 nor ch2 is a digit at this point, but complete the
+           comparisons of the two before looping.  We check for alpha, beta, rc
+           suffixes here (mainly to correctly order 1.2.3r4567890 after 1.2.3rc1) */
+        {
+            unsigned uType1 = ~0;
+            unsigned uType2 = ~0;
+            psz1 = check_release_type(ch1, psz1, &uType1);
+            psz2 = check_release_type(ch2, psz2, &uType2);
+            if (uType1 != uType2)
+                return uType1 < uType2 ? -1 : 1;
+            if (ch1 != ch2 && uType1 == ~0U)
+                return compare_failed(ch1, ch2);
+            if (ch1 == '\0')
+                return 0;
+        }
+    }
+}
+
+
+#ifdef TEST
+# include <stdio.h>
+
+int main()
+{
+    static const struct
+    {
+        int rcExpect;
+        const char *psz1, *psz2;
+    } s_aTests[] =
+    {
+        {  0, "", "" },
+        {  0, "a", "a" },
+        {  0, "ab", "ab" },
+        {  0, "abc", "abc" },
+        {  0, "001", "1" },
+        {  0, "000", "0" },
+        { -1, "0", "a" },
+        { -1, "0", "1" },
+        { -1, "0", "9" },
+        { -1, "0", "99" },
+        { -1, "9", "99" },
+        { -1, "98", "99" },
+        {  0, "asdfasdf", "asdfasdf" },
+        { -1, "asdfasdf", "asdfasdfz" },
+        { +1, "asdfasdfz", "asdfasdf" },
+        {  0, "a1s2d3f4", "a1s2d3f4" },
+        {  0, "a01s002d003f004", "a1s2d3f4" },
+        {  0, "a1s2d3f4", "a01s002d003f004" },
+        {  0, "kBuild-0.099.7", "kBuild-0.99.00007" },
+        { +1, "kBuild-0.099.7", "kBuild-0.99.00007rc1" },
+        { +1, "kBuild-0.099.7rc2", "kBuild-0.99.7beta3" },
+        { -1, "kBuild-0.099.7alpha", "kBuild-0.99.7beta3" },
+        { -1, "kBuild-0.099.7alpha", "kBuild-0.99.7beta3" },
+        { -1, "kBuild-0.099.7alpha", "kBuild-0.99.7alpha1" },
+        {  0, "kBuild-0.099.7ALPHA1", "kBuild-0.99.7alpha1" },
+        { -1, "kBuild-0.099.7BETA1", "kBuild-0.99.7rC1" },
+        { -1, "kBuild-0.099", "kBuild-0.99.0" },
+        { +1, "kBuild-0.099", "kBuild-0.99~" },
+        { +1, "1.2.3r4567890", "1.2.3rc1" },
+        { +1, "1.2.3r4567890", "1.2.3RC1" },
+        { -1, "/tools/win.amd64/vcc/v14.2/Tools", "/tools/win.amd64/vcc/v14.2.11.9/Tools" },
+        { -1, "/tools/win.amd64/vcc/v14.2/Tools", "/tools/win.amd64/vcc/v14.211.9/Tools" },
+        { -1, "/tools/win.amd64/vcc/v14.2/Tools", "/tools/win.amd64/vcc/v14.2r2/Tools" },
+        { -1, "/tools/win.amd64/vcc/v14.2/Tools", "/tools/win.amd64/vcc/v14.2-r2/Tools" },
+    };
+    unsigned cErrors = 0;
+    unsigned i;
+
+    for (i = 0; i < sizeof(s_aTests) / sizeof(s_aTests[0]); i++)
+    {
+        int rc = version_compare(s_aTests[i].psz1, s_aTests[i].psz2);
+        int rcExpect = s_aTests[i].rcExpect;
+        if (rc != (rcExpect < 0 ? -1 : rcExpect > 0 ? 1 : 0))
+        {
+            fprintf(stderr, "error: Test #%u: %d, expected %d: '%s' vs '%s'\n",
+                    i, rc, rcExpect, s_aTests[i].psz1, s_aTests[i].psz2);
+            cErrors++;
+        }
+    }
+
+    return cErrors == 0 ? 0 : 1;
+}
+#endif
+
diff --git a/src/lib/version_compare.h b/src/lib/version_compare.h
new file mode 100644
index 0000000..5ca2e87
--- /dev/null
+++ b/src/lib/version_compare.h
@@ -0,0 +1,39 @@
+/* $Id: version_compare.h 3394 2020-07-01 20:24:52Z bird $ */
+/** @file
+ * version_compare - version compare.
+ */
+
+/*
+ * Copyright (c) 2020 knut st. osmundsen <bird-kBuild-spamxx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+#ifndef ___version_compare_h___
+#define ___version_compare_h___
+
+int version_compare(const char *psz1, const char *psz2);
+
+#endif
+
+
diff --git a/src/lib/win_get_processor_group_active_mask.c b/src/lib/win_get_processor_group_active_mask.c
new file mode 100644
index 0000000..23a7d0f
--- /dev/null
+++ b/src/lib/win_get_processor_group_active_mask.c
@@ -0,0 +1,84 @@
+/* $Id: win_get_processor_group_active_mask.c 3356 2020-06-05 02:09:14Z bird $ */
+/** @file
+ * win_get_processor_group_active_mask - Helper.
+ */
+
+/*
+ * Copyright (c) 2020 knut st. osmundsen <bird-kBuild-spamxx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <string.h>
+#include <Windows.h>
+#include "win_get_processor_group_active_mask.h"
+
+
+KAFFINITY win_get_processor_group_active_mask(unsigned iGroup)
+{
+    union
+    {
+        SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX     Info;
+        SYSTEM_INFO                                 SysInfo;
+        char                                        ab[8192];
+    } uBuf;
+    typedef BOOL (WINAPI *PFNGETLOGICALPROCESSORINFORMATIONEX)(LOGICAL_PROCESSOR_RELATIONSHIP,
+                                                               SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *, DWORD *);
+    static PFNGETLOGICALPROCESSORINFORMATIONEX volatile s_pfnGetLogicalProcessorInformationEx = NULL;
+    static HMODULE                             volatile s_hmodKernel32 = NULL;
+    PFNGETLOGICALPROCESSORINFORMATIONEX pfnGetLogicalProcessorInformationEx = s_pfnGetLogicalProcessorInformationEx;
+    if (!pfnGetLogicalProcessorInformationEx)
+    {
+        if (!s_hmodKernel32)
+        {
+            HMODULE hmodKernel32 = GetModuleHandleW(L"KERNEL32.DLL");
+            s_hmodKernel32 = hmodKernel32;
+            s_pfnGetLogicalProcessorInformationEx
+                = pfnGetLogicalProcessorInformationEx
+                = (PFNGETLOGICALPROCESSORINFORMATIONEX)GetProcAddress(hmodKernel32, "GetLogicalProcessorInformationEx");
+        }
+    }
+
+    SetLastError(0);
+    if (pfnGetLogicalProcessorInformationEx)
+    {
+        DWORD cbBuf;
+        memset(&uBuf, 0, sizeof(uBuf));
+        uBuf.Info.Size = cbBuf = sizeof(uBuf);
+        if (pfnGetLogicalProcessorInformationEx(RelationGroup, &uBuf.Info, &cbBuf))
+        {
+            SetLastError(0);
+            if (iGroup < uBuf.Info.Group.MaximumGroupCount)
+                return uBuf.Info.Group.GroupInfo[iGroup].ActiveProcessorMask;
+        }
+    }
+    else if (iGroup == 0)
+    {
+        GetSystemInfo(&uBuf.SysInfo);
+        return uBuf.SysInfo.dwActiveProcessorMask;
+    }
+    return 0;
+}
+
diff --git a/src/lib/win_get_processor_group_active_mask.h b/src/lib/win_get_processor_group_active_mask.h
new file mode 100644
index 0000000..a908b83
--- /dev/null
+++ b/src/lib/win_get_processor_group_active_mask.h
@@ -0,0 +1,38 @@
+/* $Id: win_get_processor_group_active_mask.h 3354 2020-06-05 02:04:25Z bird $ */
+/** @file
+ * win_get_processor_group_active_mask - Helper.
+ */
+
+/*
+ * Copyright (c) 2020 knut st. osmundsen <bird-kBuild-spamxx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+#ifndef ___lib_win_get_processor_group_active_mask_h___
+#define ___lib_win_get_processor_group_active_mask_h___
+
+extern KAFFINITY win_get_processor_group_active_mask(unsigned iGroup);
+
+#endif
+
diff --git a/src/lib/wrapper.c b/src/lib/wrapper.c
new file mode 100644
index 0000000..8753fce
--- /dev/null
+++ b/src/lib/wrapper.c
@@ -0,0 +1,98 @@
+/* $Id: wrapper.c 2851 2016-08-31 17:30:52Z bird $ */
+/** @file
+ * Wrapper program for various debugging purposes.
+ */
+
+/*
+ * Copyright (c) 2007-2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Alternatively, the content of this file may be used under the terms of the
+ * GPL version 2 or later, or LGPL version 2.1 or later.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#ifdef _MSC_VER
+# include <process.h>
+#else
+# include <unistd.h>
+#endif
+
+
+int main(int argc, char **argv, char **envp)
+{
+    const char *pszLogTo        = getenv("WRAPPER_LOGTO");
+    const char *pszLogFileArgs  = getenv("WRAPPER_LOGFILEARGS");
+    const char *pszLogEnv       = getenv("WRAPPER_LOGENV");
+    const char *pszExec         = getenv("WRAPPER_EXEC");
+    const char *pszSigSegv      = getenv("WRAPPER_SIGSEGV");
+    const char *pszRetVal       = getenv("WRAPPER_RETVAL");
+    int i;
+
+    if (pszLogTo)
+    {
+        FILE *pLog = fopen(pszLogTo, "a");
+        if (pLog)
+        {
+            fprintf(pLog, "+++ %s pid=%ld +++\n", argv[0], (long)getpid());
+            for (i = 1; i < argc; i++)
+            {
+                fprintf(pLog, "argv[%d]: '%s'\n", i, argv[i]);
+                if (pszLogFileArgs)
+                {
+                    FILE *pArg = fopen(argv[i], "r");
+                    if (pArg)
+                    {
+                        int iLine = 0;
+                        static char szLine[64*1024];
+                        while (fgets(szLine, sizeof(szLine), pArg) && iLine++ < 42)
+                            fprintf(pLog, "%2d: %s", iLine, szLine);
+                        fclose(pArg);
+                    }
+                }
+            }
+            if (pszLogEnv)
+                for (i = 0; envp[i]; i++)
+                    fprintf(pLog, "envp[%d]: '%s'\n", i, envp[i]);
+            fprintf(pLog, "--- %s pid=%ld ---\n", argv[0], (long)getpid());
+            fclose(pLog);
+        }
+    }
+
+    if (pszSigSegv)
+    {
+        char *pchIllegal = (char *)1;
+        pchIllegal[0] = '\0';
+    }
+
+    if (pszExec)
+    {
+        /** @todo */
+    }
+
+    return pszRetVal ? atol(pszRetVal) : 1;
+}
+
diff --git a/src/misc/Makefile.kmk b/src/misc/Makefile.kmk
new file mode 100644
index 0000000..6c863bf
--- /dev/null
+++ b/src/misc/Makefile.kmk
@@ -0,0 +1,73 @@
+# $Id: Makefile.kmk 3538 2021-12-21 12:19:40Z bird $
+## @file
+# Sub-makefile for kmk_time.
+#
+
+#
+# Copyright (c) 2008-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ../..
+include $(PATH_KBUILD)/subheader.kmk
+
+PROGRAMS += kmk_time
+kmk_time_TEMPLATE = BIN
+kmk_time_DEFS = KBUILD_SVN_REV=$(KBUILD_SVN_REV)
+kmk_time_SOURCES = kmk_time.c
+kmk_time_SOURCES.win = ../lib/quote_argv.c
+
+
+#
+# Wrapper stubs for using the kBuild binaries as standard unixy ones on windows.
+#
+TEMPLATE_EXECWRAPPER = Windows exec wrapper
+TEMPLATE_EXECWRAPPER_EXTENDS    = BIN
+TEMPLATE_EXECWRAPPER_INST       = $(TEMPLATE_BIN_INST)wrappers/
+TEMPLATE_EXECWRAPPER_CFLAGS     = $(TEMPLATE_BIN_CFLAGS) -GS-
+TEMPLATE_EXECWRAPPER_LDFLAGS    = $(TEMPLATE_BIN_LDFLAGS) /Entry:BareBoneStart
+TEMPLATE_EXECWRAPPER_LIBS       = $(NO_SUCH_VARIABLE)
+TEMPLATE_EXECWRAPPER_LIBS.x86   = $(NO_SUCH_VARIABLE)
+TEMPLATE_EXECWRAPPER_LIBS.amd64 = $(NO_SUCH_VARIABLE)
+TEMPLATE_EXECWRAPPER_SOURCES    = win_exec_wrapper.c
+
+define def_WindowsWrapper
+PROGRAMS.win += $1
+$1_TEMPLATE   = EXECWRAPPER
+$1_DEFS       = TARGET_EXE_NAME=\"$2.exe\"
+endef
+
+$(evalcall2 def_WindowsWrapper,cat,kmk_cat)
+$(evalcall2 def_WindowsWrapper,cp,kmk_cp)
+$(evalcall2 def_WindowsWrapper,echo,kmk_echo)
+$(evalcall2 def_WindowsWrapper,expr,kmk_expr)
+$(evalcall2 def_WindowsWrapper,grep,kmk_grep)
+$(evalcall2 def_WindowsWrapper,ln,kmk_ln)
+$(evalcall2 def_WindowsWrapper,mkdir,kmk_mkdir)
+$(evalcall2 def_WindowsWrapper,mv,kmk_mv)
+$(evalcall2 def_WindowsWrapper,kkill,kmk_kill)
+$(evalcall2 def_WindowsWrapper,killall,kmk_kill)
+$(evalcall2 def_WindowsWrapper,printf,kmk_printf)
+$(evalcall2 def_WindowsWrapper,rm,kmk_rm)
+$(evalcall2 def_WindowsWrapper,rmdir,kmk_rmdir)
+$(evalcall2 def_WindowsWrapper,sed,kmk_sed)
+$(evalcall2 def_WindowsWrapper,sleep,kmk_sleep)
+$(evalcall2 def_WindowsWrapper,touch,kmk_touch)
+
+include $(KBUILD_PATH)/subfooter.kmk
+
diff --git a/src/misc/kmk_time.c b/src/misc/kmk_time.c
new file mode 100644
index 0000000..8f64fdb
--- /dev/null
+++ b/src/misc/kmk_time.c
@@ -0,0 +1,437 @@
+/* $Id: kmk_time.c 3336 2020-04-22 12:08:35Z bird $ */
+/** @file
+ * kmk_time - Time program execution.
+ *
+ * This is based on kmk/kmkbuiltin/redirect.c.
+ */
+
+/*
+ * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <time.h>
+#if defined(_MSC_VER)
+# include <io.h>
+# include <direct.h>
+# include <process.h>
+# include <Windows.h>
+# include "quote_argv.h"
+#else
+# include <unistd.h>
+# include <sys/time.h>
+# include <sys/wait.h>
+# include <signal.h>
+#endif
+
+#ifdef __OS2__
+# define INCL_BASE
+# include <os2.h>
+# ifndef LIBPATHSTRICT
+#  define LIBPATHSTRICT 3
+# endif
+#endif
+
+#ifndef _MSC_VER
+static const char *my_strsignal(int signo)
+{
+#define CASE_SIG_RET_STR(sig) if (signo == SIG##sig) return #sig
+#ifdef SIGHUP
+    CASE_SIG_RET_STR(HUP);
+#endif
+#ifdef SIGINT
+    CASE_SIG_RET_STR(INT);
+#endif
+#ifdef SIGQUIT
+    CASE_SIG_RET_STR(QUIT);
+#endif
+#ifdef SIGILL
+    CASE_SIG_RET_STR(ILL);
+#endif
+#ifdef SIGTRAP
+    CASE_SIG_RET_STR(TRAP);
+#endif
+#ifdef SIGABRT
+    CASE_SIG_RET_STR(ABRT);
+#endif
+#ifdef SIGIOT
+    CASE_SIG_RET_STR(IOT);
+#endif
+#ifdef SIGBUS
+    CASE_SIG_RET_STR(BUS);
+#endif
+#ifdef SIGFPE
+    CASE_SIG_RET_STR(FPE);
+#endif
+#ifdef SIGKILL
+    CASE_SIG_RET_STR(KILL);
+#endif
+#ifdef SIGUSR1
+    CASE_SIG_RET_STR(USR1);
+#endif
+#ifdef SIGSEGV
+    CASE_SIG_RET_STR(SEGV);
+#endif
+#ifdef SIGUSR2
+    CASE_SIG_RET_STR(USR2);
+#endif
+#ifdef SIGPIPE
+    CASE_SIG_RET_STR(PIPE);
+#endif
+#ifdef SIGALRM
+    CASE_SIG_RET_STR(ALRM);
+#endif
+#ifdef SIGTERM
+    CASE_SIG_RET_STR(TERM);
+#endif
+#ifdef SIGSTKFLT
+    CASE_SIG_RET_STR(STKFLT);
+#endif
+#ifdef SIGCHLD
+    CASE_SIG_RET_STR(CHLD);
+#endif
+#ifdef SIGCONT
+    CASE_SIG_RET_STR(CONT);
+#endif
+#ifdef SIGSTOP
+    CASE_SIG_RET_STR(STOP);
+#endif
+#ifdef SIGTSTP
+    CASE_SIG_RET_STR(TSTP);
+#endif
+#ifdef SIGTTIN
+    CASE_SIG_RET_STR(TTIN);
+#endif
+#ifdef SIGTTOU
+    CASE_SIG_RET_STR(TTOU);
+#endif
+#ifdef SIGURG
+    CASE_SIG_RET_STR(URG);
+#endif
+#ifdef SIGXCPU
+    CASE_SIG_RET_STR(XCPU);
+#endif
+#ifdef SIGXFSZ
+    CASE_SIG_RET_STR(XFSZ);
+#endif
+#ifdef SIGVTALRM
+    CASE_SIG_RET_STR(VTALRM);
+#endif
+#ifdef SIGPROF
+    CASE_SIG_RET_STR(PROF);
+#endif
+#ifdef SIGWINCH
+    CASE_SIG_RET_STR(WINCH);
+#endif
+#ifdef SIGIO
+    CASE_SIG_RET_STR(IO);
+#endif
+#ifdef SIGPWR
+    CASE_SIG_RET_STR(PWR);
+#endif
+#ifdef SIGSYS
+    CASE_SIG_RET_STR(SYS);
+#endif
+#ifdef SIGBREAK
+    CASE_SIG_RET_STR(BREAK);
+#endif
+#undef CASE_SIG_RET_STR
+    return "???";
+}
+#endif /* unix */
+
+static const char *name(const char *pszName)
+{
+    const char *psz = strrchr(pszName, '/');
+#if defined(_MSC_VER) || defined(__OS2__)
+    const char *psz2 = strrchr(pszName, '\\');
+    if (!psz2)
+        psz2 = strrchr(pszName, ':');
+    if (psz2 && (!psz || psz2 > psz))
+        psz = psz2;
+#endif
+    return psz ? psz + 1 : pszName;
+}
+
+
+static int usage(FILE *pOut,  const char *argv0)
+{
+    fprintf(pOut,
+            "usage: %s [options] [--] <program> [args]\n"
+            "   or: %s --help\n"
+            "   or: %s --version\n"
+            "\n"
+            "Options:\n"
+            "  -i <count>, --iteration <count>\n"
+            "      Run the program <count> times and display minium, maximum and average\n"
+            "      run times at the end.\n"
+            ,
+            argv0, argv0, argv0);
+#ifdef _MSC_VER
+    fprintf(pOut,
+            "  --unquoted\n"
+            "      Windows only: No argument quoting, use them as-is.\n");
+#endif
+    return 1;
+}
+
+
+int main(int argc, char **argv)
+{
+    int                 i, j;
+    int                 cTimes = 1;
+#if defined(_MSC_VER)
+    int                 fUnquoted = 0;
+    FILETIME ftStart,   ft;
+    unsigned _int64     usMin, usMax, usAvg, usTotal, usCur;
+    unsigned _int64     iStart;
+    intptr_t            rc;
+#else
+    struct timeval      tvStart, tv;
+    unsigned long long  usMin, usMax, usAvg, usTotal, usCur;
+    pid_t               pid;
+    int                 rc;
+#endif
+    int                 rcExit = 0;
+
+    /*
+     * Parse arguments.
+     */
+    if (argc <= 1)
+        return usage(stderr, name(argv[0]));
+    for (i = 1; i < argc; i++)
+    {
+        char *psz = &argv[i][0];
+        if (*psz++ != '-')
+            break;
+
+        if (*psz == '-')
+        {
+            /* '--' ? */
+            if (!psz[1])
+            {
+                i++;
+                break;
+            }
+
+            /* convert to short. */
+            if (!strcmp(psz, "-help"))
+                psz = "h";
+            else if (!strcmp(psz, "-version"))
+                psz = "V";
+            else if (!strcmp(psz, "-iterations"))
+                psz = "i";
+#if defined(_MSC_VER)
+            else if (!strcmp(psz, "-unquoted"))
+            {
+                fUnquoted = 1;
+                continue;
+            }
+#endif
+        }
+
+        switch (*psz)
+        {
+            case 'h':
+                usage(stdout, name(argv[0]));
+                return 0;
+
+            case 'V':
+                printf("kmk_time - kBuild version %d.%d.%d (r%u)\n"
+                       "Copyright (C) 2007-2018 knut st. osmundsen\n",
+                       KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH,
+                       KBUILD_SVN_REV);
+                return 0;
+
+            case 'i':
+                if (i + 1 >= argc)
+                {
+                    fprintf(stderr, "%s: syntax error: missing iteration count\n", name(argv[0]));
+                    return 1;
+                }
+                cTimes = atoi(argv[++i]);
+                if (cTimes <= 0)
+                {
+                    fprintf(stderr, "%s: error: invalid interation count '%s'.\n", name(argv[0]), argv[i]);
+                    return 1;
+                }
+                break;
+
+            default:
+                fprintf(stderr, "%s: error: syntax error '%s'\n", name(argv[0]), argv[i]);
+                return 1;
+        }
+    }
+
+    /*
+     * Make sure there's something to execute.
+     */
+    if (i >= argc)
+    {
+        fprintf(stderr, "%s: syntax error: nothing to execute!\n", name(argv[0]));
+        return usage(stderr, name(argv[0]));
+    }
+
+    /*
+     * Execute the program the specified number of times.
+     */
+    usMax = usMin = usTotal = 0;
+    usMin--; /* wraps to max value */
+    for (j = 0; j < cTimes; j++)
+    {
+        /*
+         * Execute the program (it's actually supposed to be a command I think, but wtf).
+         */
+#if defined(_MSC_VER)
+        if (!fUnquoted)
+        {
+            if (quote_argv(argc - i, &argv[i], 0 /*fWatcomBrainDamage*/, 0 /*fFreeOrLeak*/) != 0)
+            {
+                fprintf(stderr, "%s: error: quote_argv failed\n");
+                return 8;
+            }
+            fUnquoted = 1; /* Don't quote them again in the next iteration. */
+        }
+
+        GetSystemTimeAsFileTime(&ftStart);
+        rc = _spawnvp(_P_WAIT, argv[i], &argv[i]);
+        if (rc == -1)
+        {
+            fprintf(stderr, "%s: error: _spawnvp(_P_WAIT, \"%s\", ...) failed: %s\n", name(argv[0]), argv[i], strerror(errno));
+            return 8;
+        }
+
+        GetSystemTimeAsFileTime(&ft);
+
+        iStart = ftStart.dwLowDateTime | ((unsigned _int64)ftStart.dwHighDateTime << 32);
+        usCur = ft.dwLowDateTime | ((unsigned _int64)ft.dwHighDateTime << 32);
+        usCur -= iStart;
+        usCur /= 10; /* to usecs */
+
+        printf("%s: ", name(argv[0]));
+        if (cTimes != 1)
+            printf("#%02u ", j + 1);
+        printf("%um%u.%06us - exit code: %d\n",
+               (unsigned)(usCur / (60 * 1000000)),
+               (unsigned)(usCur % (60 * 1000000)) / 1000000,
+               (unsigned)(usCur % 1000000),
+               rc);
+
+#else /* unix: */
+        gettimeofday(&tvStart, NULL);
+        pid = fork();
+        if (!pid)
+        {
+            /* child */
+            execvp(argv[i], &argv[i]);
+            fprintf(stderr, "%s: error: _execvp(\"%s\", ...) failed: %s\n", name(argv[0]), argv[i], strerror(errno));
+            return 8;
+        }
+        if (pid < 0)
+        {
+            fprintf(stderr, "%s: error: fork() failed: %s\n", name(argv[0]), strerror(errno));
+            return 9;
+        }
+
+        /* parent, wait for child. */
+        rc = 9;
+        while (waitpid(pid, &rc, 0) == -1 && errno == EINTR)
+            /* nothing */;
+        gettimeofday(&tv, NULL);
+
+        /* calc elapsed time */
+        tv.tv_sec -= tvStart.tv_sec;
+        if (tv.tv_usec > tvStart.tv_usec)
+            tv.tv_usec -= tvStart.tv_usec;
+        else
+        {
+            tv.tv_sec--;
+            tv.tv_usec = tv.tv_usec + 1000000 - tvStart.tv_usec;
+        }
+        usCur = tv.tv_sec * 1000000ULL
+              + tv.tv_usec;
+
+        printf("%s: ", name(argv[0]));
+        if (cTimes != 1)
+            printf("#%02u ", j + 1);
+        printf("%um%u.%06us",
+               (unsigned)(tv.tv_sec / 60),
+               (unsigned)(tv.tv_sec % 60),
+               (unsigned)tv.tv_usec);
+        if (WIFEXITED(rc))
+        {
+            printf(" - normal exit: %d\n", WEXITSTATUS(rc));
+            rc = WEXITSTATUS(rc);
+        }
+# ifndef __HAIKU__ /**@todo figure how haiku signals that a core was dumped. */
+        else if (WIFSIGNALED(rc) && WCOREDUMP(rc))
+        {
+            printf(" - dumped core: %s (%d)\n", my_strsignal(WTERMSIG(rc)), WTERMSIG(rc));
+            rc = 10;
+        }
+# endif
+        else if (WIFSIGNALED(rc))
+        {
+            printf(" -   killed by: %s (%d)\n", my_strsignal(WTERMSIG(rc)), WTERMSIG(rc));
+            rc = 11;
+        }
+        else if (WIFSTOPPED(rc))
+        {
+            printf(" -  stopped by: %s (%d)\n", my_strsignal(WSTOPSIG(rc)), WSTOPSIG(rc));
+            rc = 12;
+        }
+        else
+        {
+            printf(" unknown exit status %#x (%d)\n", rc, rc);
+            rc = 13;
+        }
+#endif /* unix */
+        if (rc && !rcExit)
+            rcExit = (int)rc;
+
+        /* calc min/max/avg */
+        usTotal += usCur;
+        if (usMax < usCur)
+            usMax = usCur;
+        if (usMin > usCur)
+            usMin = usCur;
+    }
+
+    /*
+     * Summary if more than one run.
+     */
+    if (cTimes != 1)
+    {
+        usAvg = usTotal / cTimes;
+
+        printf("%s: avg %um%u.%06us\n", name(argv[0]), (unsigned)(usAvg / 60000000), (unsigned)(usAvg % 60000000) / 1000000, (unsigned)(usAvg % 1000000));
+        printf("%s: min %um%u.%06us\n", name(argv[0]), (unsigned)(usMin / 60000000), (unsigned)(usMin % 60000000) / 1000000, (unsigned)(usMin % 1000000));
+        printf("%s: max %um%u.%06us\n", name(argv[0]), (unsigned)(usMax / 60000000), (unsigned)(usMax % 60000000) / 1000000, (unsigned)(usMax % 1000000));
+    }
+
+    return rcExit;
+}
+
diff --git a/src/misc/win_exec_wrapper.c b/src/misc/win_exec_wrapper.c
new file mode 100644
index 0000000..0e1e851
--- /dev/null
+++ b/src/misc/win_exec_wrapper.c
@@ -0,0 +1,120 @@
+/* $Id: win_exec_wrapper.c 3528 2021-12-19 16:32:38Z bird $ */
+/** @file
+ * win_exec_wrapper - Stub for exec'ing a kmk_xxx program.
+ */
+
+/*
+ * Copyright (c) 2021 knut st. osmundsen <bird-kBuild-spamixx@anduin.net>
+ *
+ * This file is part of kBuild.
+ *
+ * kBuild is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * kBuild is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <windows.h>
+
+
+VOID __stdcall BareBoneStart(VOID)
+{
+    DWORD               dwIgnored;
+    PROCESS_INFORMATION ProcInfo        = { NULL, NULL, 0, 0 };
+    WCHAR               wszExec[260];
+    UINT                cwcExec         = GetModuleFileNameW(NULL, wszExec, 512);
+    BOOL                fExecOk         = FALSE;
+    WCHAR const * const pwszCommandLine = GetCommandLineW();
+    STARTUPINFOW        StartInfo       = { sizeof(StartInfo), NULL, NULL, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL};
+    GetStartupInfoW(&StartInfo);
+
+    /*
+     * Make sure we've got the standard handles.
+     */
+    StartInfo.hStdInput  = GetStdHandle(STD_INPUT_HANDLE);
+    StartInfo.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE);
+    StartInfo.hStdError  = GetStdHandle(STD_ERROR_HANDLE);
+    StartInfo.dwFlags   |= STARTF_USESTDHANDLES;
+
+    /*
+     * Construct the executable path.
+     */
+    if (cwcExec > 10)
+    {
+        /* Strip the filename. */
+#define IS_SEP(a_wc) ( (a_wc) == '\\' || (a_wc) == ':' || (a_wc) == '\\' )
+        while (cwcExec > 3 && !IS_SEP(wszExec[cwcExec - 1]))
+            cwcExec--;
+        if (IS_SEP(wszExec[cwcExec - 1]))
+        {
+            /* Strip the separator. */
+            while (cwcExec > 3 && IS_SEP(wszExec[cwcExec - 1]))
+                cwcExec--;
+            if (!IS_SEP(wszExec[cwcExec - 1]))
+            {
+                /* Strip the path component: */
+                while (cwcExec > 3 && !IS_SEP(wszExec[cwcExec - 1]))
+                    cwcExec--;
+                if (IS_SEP(wszExec[cwcExec - 1]))
+                {
+                    /* Insert the target executable name: */
+                    static char const s_szTargetName[] = TARGET_EXE_NAME;
+                    unsigned off = 0;
+                    while (off < sizeof(s_szTargetName))
+                        wszExec[cwcExec++] = s_szTargetName[off++];
+                    fExecOk = cwcExec <= 260;
+                }
+            }
+        }
+    }
+    if (fExecOk)
+    {
+        /*
+         * Create the real process.
+         */
+        if (CreateProcessW(wszExec, (WCHAR *)pwszCommandLine, NULL, NULL, TRUE /*bInheritHandles*/,
+                           0 /*fFlags*/, NULL /*pwszzEnv*/, NULL /*pwszCwd*/, &StartInfo, &ProcInfo))
+        {
+            /*
+             * Wait for it to complete.
+             */
+            CloseHandle(ProcInfo.hThread);
+            for (;;)
+            {
+                DWORD dwExitCode = 1;
+                WaitForSingleObject(ProcInfo.hProcess, INFINITE);
+                if (GetExitCodeProcess(ProcInfo.hProcess, &dwExitCode))
+                    for (;;)
+                        ExitProcess(dwExitCode);
+                Sleep(1);
+            }
+        }
+        else
+        {
+            static const char s_szMsg[] = "error: CreateProcessW failed for " TARGET_EXE_NAME "\r\n";
+            WriteFile(StartInfo.hStdError, s_szMsg, sizeof(s_szMsg) - 1, &dwIgnored, NULL);
+        }
+    }
+    else
+    {
+        static const char s_szMsg[] = "error: path construction failed (" TARGET_EXE_NAME ")\r\n";
+        WriteFile(StartInfo.hStdError, s_szMsg, sizeof(s_szMsg) - 1, &dwIgnored, NULL);
+    }
+
+    for (;;)
+        ExitProcess(31);
+}
+
diff --git a/src/sed/ABOUT-NLS b/src/sed/ABOUT-NLS
new file mode 100644
index 0000000..f083395
--- /dev/null
+++ b/src/sed/ABOUT-NLS
@@ -0,0 +1,393 @@
+Notes on the Free Translation Project
+*************************************
+
+   Free software is going international!  The Free Translation Project
+is a way to get maintainers of free software, translators, and users all
+together, so that will gradually become able to speak many languages.
+A few packages already provide translations for their messages.
+
+   If you found this `ABOUT-NLS' file inside a distribution, you may
+assume that the distributed package does use GNU `gettext' internally,
+itself available at your nearest GNU archive site.  But you do _not_
+need to install GNU `gettext' prior to configuring, installing or using
+this package with messages translated.
+
+   Installers will find here some useful hints.  These notes also
+explain how users should proceed for getting the programs to use the
+available translations.  They tell how people wanting to contribute and
+work at translations should contact the appropriate team.
+
+   When reporting bugs in the `intl/' directory or bugs which may be
+related to internationalization, you should tell about the version of
+`gettext' which is used.  The information can be found in the
+`intl/VERSION' file, in internationalized packages.
+
+Quick configuration advice
+==========================
+
+   If you want to exploit the full power of internationalization, you
+should configure it using
+
+     ./configure --with-included-gettext
+
+to force usage of internationalizing routines provided within this
+package, despite the existence of internationalizing capabilities in the
+operating system where this package is being installed.  So far, only
+the `gettext' implementation in the GNU C library version 2 provides as
+many features (such as locale alias, message inheritance, automatic
+charset conversion or plural form handling) as the implementation here.
+It is also not possible to offer this additional functionality on top
+of a `catgets' implementation.  Future versions of GNU `gettext' will
+very likely convey even more functionality.  So it might be a good idea
+to change to GNU `gettext' as soon as possible.
+
+   So you need _not_ provide this option if you are using GNU libc 2 or
+you have installed a recent copy of the GNU gettext package with the
+included `libintl'.
+
+INSTALL Matters
+===============
+
+   Some packages are "localizable" when properly installed; the
+programs they contain can be made to speak your own native language.
+Most such packages use GNU `gettext'.  Other packages have their own
+ways to internationalization, predating GNU `gettext'.
+
+   By default, this package will be installed to allow translation of
+messages.  It will automatically detect whether the system already
+provides the GNU `gettext' functions.  If not, the GNU `gettext' own
+library will be used.  This library is wholly contained within this
+package, usually in the `intl/' subdirectory, so prior installation of
+the GNU `gettext' package is _not_ required.  Installers may use
+special options at configuration time for changing the default
+behaviour.  The commands:
+
+     ./configure --with-included-gettext
+     ./configure --disable-nls
+
+will respectively bypass any pre-existing `gettext' to use the
+internationalizing routines provided within this package, or else,
+_totally_ disable translation of messages.
+
+   When you already have GNU `gettext' installed on your system and run
+configure without an option for your new package, `configure' will
+probably detect the previously built and installed `libintl.a' file and
+will decide to use this.  This might be not what is desirable.  You
+should use the more recent version of the GNU `gettext' library.  I.e.
+if the file `intl/VERSION' shows that the library which comes with this
+package is more recent, you should use
+
+     ./configure --with-included-gettext
+
+to prevent auto-detection.
+
+   The configuration process will not test for the `catgets' function
+and therefore it will not be used.  The reason is that even an
+emulation of `gettext' on top of `catgets' could not provide all the
+extensions of the GNU `gettext' library.
+
+   Internationalized packages have usually many `po/LL.po' files, where
+LL gives an ISO 639 two-letter code identifying the language.  Unless
+translations have been forbidden at `configure' time by using the
+`--disable-nls' switch, all available translations are installed
+together with the package.  However, the environment variable `LINGUAS'
+may be set, prior to configuration, to limit the installed set.
+`LINGUAS' should then contain a space separated list of two-letter
+codes, stating which languages are allowed.
+
+Using This Package
+==================
+
+   As a user, if your language has been installed for this package, you
+only have to set the `LANG' environment variable to the appropriate
+`LL_CC' combination.  Here `LL' is an ISO 639 two-letter language code,
+and `CC' is an ISO 3166 two-letter country code.  For example, let's
+suppose that you speak German and live in Germany.  At the shell
+prompt, merely execute `setenv LANG de_DE' (in `csh'),
+`export LANG; LANG=de_DE' (in `sh') or `export LANG=de_DE' (in `bash').
+This can be done from your `.login' or `.profile' file, once and for
+all.
+
+   You might think that the country code specification is redundant.
+But in fact, some languages have dialects in different countries.  For
+example, `de_AT' is used for Austria, and `pt_BR' for Brazil.  The
+country code serves to distinguish the dialects.
+
+   The locale naming convention of `LL_CC', with `LL' denoting the
+language and `CC' denoting the country, is the one use on systems based
+on GNU libc.  On other systems, some variations of this scheme are
+used, such as `LL' or `LL_CC.ENCODING'.  You can get the list of
+locales supported by your system for your country by running the command
+`locale -a | grep '^LL''.
+
+   Not all programs have translations for all languages.  By default, an
+English message is shown in place of a nonexistent translation.  If you
+understand other languages, you can set up a priority list of languages.
+This is done through a different environment variable, called
+`LANGUAGE'.  GNU `gettext' gives preference to `LANGUAGE' over `LANG'
+for the purpose of message handling, but you still need to have `LANG'
+set to the primary language; this is required by other parts of the
+system libraries.  For example, some Swedish users who would rather
+read translations in German than English for when Swedish is not
+available, set `LANGUAGE' to `sv:de' while leaving `LANG' to `sv_SE'.
+
+   In the `LANGUAGE' environment variable, but not in the `LANG'
+environment variable, `LL_CC' combinations can be abbreviated as `LL'
+to denote the language's main dialect.  For example, `de' is equivalent
+to `de_DE' (German as spoken in Germany), and `pt' to `pt_PT'
+(Portuguese as spoken in Portugal) in this context.
+
+Translating Teams
+=================
+
+   For the Free Translation Project to be a success, we need interested
+people who like their own language and write it well, and who are also
+able to synergize with other translators speaking the same language.
+Each translation team has its own mailing list.  The up-to-date list of
+teams can be found at the Free Translation Project's homepage,
+`http://www.iro.umontreal.ca/contrib/po/HTML/', in the "National teams"
+area.
+
+   If you'd like to volunteer to _work_ at translating messages, you
+should become a member of the translating team for your own language.
+The subscribing address is _not_ the same as the list itself, it has
+`-request' appended.  For example, speakers of Swedish can send a
+message to `sv-request@li.org', having this message body:
+
+     subscribe
+
+   Keep in mind that team members are expected to participate
+_actively_ in translations, or at solving translational difficulties,
+rather than merely lurking around.  If your team does not exist yet and
+you want to start one, or if you are unsure about what to do or how to
+get started, please write to `translation@iro.umontreal.ca' to reach the
+coordinator for all translator teams.
+
+   The English team is special.  It works at improving and uniformizing
+the terminology in use.  Proven linguistic skill are praised more than
+programming skill, here.
+
+Available Packages
+==================
+
+   Languages are not equally supported in all packages.  The following
+matrix shows the current state of internationalization, as of January
+2002.  The matrix shows, in regard of each package, for which languages
+PO files have been submitted to translation coordination, with a
+translation percentage of at least 50%.
+
+     Ready PO files    bg ca cs da de el en eo es et fi fr
+                     +-------------------------------------+
+     a2ps            |          [] []             []    [] |
+     bash            |             []       [] []       [] |
+     bfd             |                         []       [] |
+     binutils        |                         []       [] |
+     bison           |             []             []    [] |
+     clisp           |             []    []    []       [] |
+     cpio            |          [] []          []       [] |
+     diffutils       |       [] [] []       [] []       [] |
+     enscript        |             []                   [] |
+     error           |                         []       [] |
+     fetchmail       |       () [] []          []       () |
+     fileutils       |          [] []          [] []    [] |
+     findutils       |          [] []          [] []    [] |
+     flex            |          []             []       [] |
+     gas             |                                  [] |
+     gawk            |                         []       [] |
+     gcal            |    []                            [] |
+     gcc             |                         []       [] |
+     gettext         |    []    [] []          []       [] |
+     gnupg           |             [] []    [] [] []    [] |
+     gprof           |                         []       [] |
+     grep            |       []    []       [] [] []    [] |
+     hello           |          [] [] []    [] [] [] [] [] |
+     id-utils        |          [] []                   [] |
+     indent          |             []       []    []    [] |
+     jpilot          |       () [] []                   [] |
+     jwhois          |                         []       [] |
+     kbd             |                                  [] |
+     ld              |                         []       [] |
+     libc            |    [] [] [] [] []       []       [] |
+     lilypond        |          []                      [] |
+     lynx            |       [] [] []             []       |
+     m4              |       [] [] [] []                [] |
+     make            |          [] []          []       [] |
+     mysecretdiary   |             []                   [] |
+     nano            |    [] () [] []          []       [] |
+     nano_1_0        |    [] () [] []          []       [] |
+     opcodes         |          []             []       [] |
+     parted          |    []    [] []                   [] |
+     ptx             |          [] []          [] []    [] |
+     python          |                                     |
+     recode          |          [] [] []    [] []       [] |
+     sed             |       [] [] [] []    [] [] []    [] |
+     sh-utils        |    [] [] [] [] []       [] []    [] |
+     sharutils       |       [] [] [] []       []       [] |
+     sketch          |             ()          []       () |
+     soundtracker    |             []          []       [] |
+     sp              |                                     |
+     tar             |       [] [] []          [] []    [] |
+     texinfo         |       [] [] []       []          [] |
+     textutils       |          [] []          []       [] |
+     util-linux      |       [] []             []       [] |
+     wdiff           |          [] []          [] []    [] |
+     wget            |    [] [] [] [] []       [] []    [] |
+                     +-------------------------------------+
+                       bg ca cs da de el en eo es et fi fr
+                        0  8 12 31 36  9  1  9 37 15  1 49
+     
+                       gl he hr hu id it ja ko lv nb nl nn
+                     +-------------------------------------+
+     a2ps            |                ()    ()       []    |
+     bash            |                                     |
+     bfd             |                   []                |
+     binutils        |                   []                |
+     bison           |                   []                |
+     clisp           |                               []    |
+     cpio            | []                   []       []    |
+     diffutils       | [] []                               |
+     enscript        |                               []    |
+     error           |          []                         |
+     fetchmail       |                                     |
+     fileutils       |                [] []                |
+     findutils       | []          [] [] [] []       []    |
+     flex            |                      []             |
+     gas             |                                     |
+     gawk            |    []                               |
+     gcal            |                                     |
+     gcc             |                   []                |
+     gettext         |                      []             |
+     gnupg           | []             [] []                |
+     gprof           |                                     |
+     grep            | []             []                   |
+     hello           | []       []    [] [] [] [] [] [] [] |
+     id-utils        |                               []    |
+     indent          | []                []          []    |
+     jpilot          |                   ()          ()    |
+     jwhois          |                                     |
+     kbd             |                                     |
+     ld              |                                     |
+     libc            | []                [] []    []       |
+     lilypond        |                   []          []    |
+     lynx            |                   []          []    |
+     m4              | []          []    []          []    |
+     make            | []                [] []       []    |
+     mysecretdiary   |                                     |
+     nano            | []          [] [] ()          () [] |
+     nano_1_0        | []          [] [] ()          () [] |
+     opcodes         |                                     |
+     parted          | []                []             [] |
+     ptx             | []          []             [] []    |
+     python          |                                     |
+     recode          | [] []          []                   |
+     sed             | [] []       [] [] [] []       []    |
+     sh-utils        | []             [] []       [] []    |
+     sharutils       | []                []          []    |
+     sketch          |                ()                   |
+     soundtracker    | []                                  |
+     sp              |                                     |
+     tar             |                [] []       []       |
+     texinfo         |    [] []          []                |
+     textutils       |                      []    []       |
+     util-linux      |                () []                |
+     wdiff           |                                     |
+     wget            | [] []    []       []          []    |
+                     +-------------------------------------+
+                       gl he hr hu id it ja ko lv nb nl nn
+                       20  6  1  3  6 11 22  9  1  6 17  4
+     
+                       no pl pt pt_BR ru sk sl sv tr uk zh
+                     +-------------------------------------+
+     a2ps            | () () ()       []    [] [] ()       |  8
+     bash            |                                     |  4
+     bfd             |                         [] []       |  5
+     binutils        |                            []       |  4
+     bison           |                []       [] []       |  7
+     clisp           |                                     |  5
+     cpio            |    []     []   []       []          | 11
+     diffutils       |                []       [] []       | 11
+     enscript        |           []   []       []          |  6
+     error           |                   []       []       |  5
+     fetchmail       |    ()     ()                        |  3
+     fileutils       |                []    [] [] []       | 11
+     findutils       |    []     []   []    [] [] []       | 17
+     flex            |                []       []          |  6
+     gas             |                            []       |  2
+     gawk            |                         [] []       |  5
+     gcal            |                         []          |  3
+     gcc             |                            []       |  4
+     gettext         |                   [] [] [] []       | 10
+     gnupg           |    []                   [] []       | 12
+     gprof           |                         [] []       |  4
+     grep            |    []          []    [] [] []       | 13
+     hello           | [] []          [] []    [] [] []    | 24
+     id-utils        |                []       []          |  6
+     indent          |                [] []    [] []       | 11
+     jpilot          | ()                      ()          |  3
+     jwhois          |                ()       ()          |  2
+     kbd             |                         [] []       |  3
+     ld              |                         [] []       |  4
+     libc            | [] []     []      []    [] []       | 17
+     lilypond        |                         []          |  5
+     lynx            |           []   []       []          |  9
+     m4              |    []          []       []          | 12
+     make            |    []     []   []          []       | 12
+     mysecretdiary   |                         []          |  3
+     nano            | ()             []       []    []    | 12
+     nano_1_0        | ()             []       []    []    | 12
+     opcodes         |                         [] []       |  5
+     parted          |       []  []            []          | 10
+     ptx             | [] [] []       []       [] []       | 15
+     python          |                                     |  0
+     recode          |    []          []    [] []          | 13
+     sed             |           []   [] [] [] [] []       | 21
+     sh-utils        | [] []     []   [] [] [] [] []    [] | 22
+     sharutils       |                []       []          | 11
+     sketch          |                ()                   |  1
+     soundtracker    |                                     |  4
+     sp              |                                     |  0
+     tar             | [] []     []      [] [] [] []       | 16
+     texinfo         |                []       []          | 10
+     textutils       |                      []    []       |  8
+     util-linux      |           []            [] []       |  8
+     wdiff           |                [] []    [] []       |  9
+     wget            |                [] [] [] [] [] []    | 19
+                     +-------------------------------------+
+       35 teams        no pl pt pt_BR ru sk sl sv tr uk zh
+       54 domains       5 12  2  11   25 10 11 39 29  4  1  463
+
+   Some counters in the preceding matrix are higher than the number of
+visible blocks let us expect.  This is because a few extra PO files are
+used for implementing regional variants of languages, or language
+dialects.
+
+   For a PO file in the matrix above to be effective, the package to
+which it applies should also have been internationalized and
+distributed as such by its maintainer.  There might be an observable
+lag between the mere existence a PO file and its wide availability in a
+distribution.
+
+   If January 2002 seems to be old, you may fetch a more recent copy of
+this `ABOUT-NLS' file on most GNU archive sites.  The most up-to-date
+matrix with full percentage details can be found at
+`http://www.iro.umontreal.ca/contrib/po/HTML/matrix.html'.
+
+Using `gettext' in new packages
+===============================
+
+   If you are writing a freely available program and want to
+internationalize it you are welcome to use GNU `gettext' in your
+package.  Of course you have to respect the GNU Library General Public
+License which covers the use of the GNU `gettext' library.  This means
+in particular that even non-free programs can use `libintl' as a shared
+library, whereas only free software can use `libintl' as a static
+library or use modified versions of `libintl'.
+
+   Once the sources are changed appropriately and the setup can handle
+to use of `gettext' the only thing missing are the translations.  The
+Free Translation Project is also available for packages which are not
+developed inside the GNU project.  Therefore the information given above
+applies also for every other Free Software Project.  Contact
+`translation@iro.umontreal.ca' to make the `.pot' files available to
+the translation teams.
+
diff --git a/src/sed/AUTHORS b/src/sed/AUTHORS
new file mode 100644
index 0000000..4474df9
--- /dev/null
+++ b/src/sed/AUTHORS
@@ -0,0 +1,5 @@
+GNU Sed was first authored by Jay Fenlason (hack@gnu.org)
+and later modified by Tom Lord (lord@gnu.org).
+
+It is currently being maintained by Ken Pizzini (ken@gnu.org)
+and Paolo Bonzini (bonzini@gnu.org).
diff --git a/src/sed/BUGS b/src/sed/BUGS
new file mode 100644
index 0000000..a8bce01
--- /dev/null
+++ b/src/sed/BUGS
@@ -0,0 +1,122 @@
+* ABOUT BUGS
+
+Before reporting a bug, please check the list of known bugs
+and the list of oft-reported non-bugs (below).
+
+Bugs and comments may be sent to bonzini@gnu.org; please
+include in the Subject: header the first line of the output of
+``sed --version''.
+
+Please do not send a bug report like this:
+
+	[while building frobme-1.3.4] 
+	$ configure 
+	sed: file sedscr line 1: Unknown option to 's'
+
+If sed doesn't configure your favorite package, take a few extra
+minutes to identify the specific problem and make a stand-alone test
+case.
+
+A stand-alone test case includes all the data necessary to perform the
+test, and the specific invocation of sed that causes the problem.  The
+smaller a stand-alone test case is, the better.  A test case should
+not involve something as far removed from sed as ``try to configure
+frobme-1.3.4''.  Yes, that is in principle enough information to look
+for the bug, but that is not a very practical prospect.
+
+
+
+* NON-BUGS
+
+`N' command on the last line
+
+  Most versions of sed exit without printing anything when the `N'
+  command is issued on the last line of a file.  GNU sed instead
+  prints pattern space before exiting unless of course the `-n'
+  command switch has been specified.  More information on the reason
+  behind this choice can be found in the Info manual.
+
+
+regex syntax clashes (problems with backslashes)
+
+  sed uses the Posix basic regular expression syntax.  According to
+  the standard, the meaning of some escape sequences is undefined in
+  this syntax;  notable in the case of GNU sed are `\|', `\+', `\?',
+  `\`', `\'', `\<', `\>', `\b', `\B', `\w', and `\W'.
+
+  As in all GNU programs that use Posix basic regular expressions, sed
+  interprets these escape sequences as meta-characters.  So, `x\+'
+  matches one or more occurrences of `x'.   `abc\|def' matches either
+  `abc' or `def'.
+
+  This syntax may cause problems when running scripts written for other
+  seds.  Some sed programs have been written with the assumption that
+  `\|' and `\+' match the literal characters `|' and `+'.  Such scripts
+  must be modified by removing the spurious backslashes if they are to
+  be used with recent versions of sed (not only GNU sed).
+
+  On the other hand, some scripts use `s|abc\|def||g' to remove occurrences
+  of _either_ `abc' or `def'.  While this worked until sed 4.0.x, newer
+  versions interpret this as removing the string `abc|def'.  This is
+  again undefined behavior according to POSIX, but this interpretation
+  is arguably more robust: the older one, for example, required that
+  the regex matcher parsed `\/' as `/' in the common case of escaping
+  a slash, which is again undefined behavior; the new behavior avoids
+  this, and this is good because the regex matcher is only partially
+  under our control.
+
+  In addition, GNU sed supports several escape characters (some of
+  which are multi-character) to insert non-printable characters
+  in scripts (`\a', `\c', `\d', `\o', `\r', `\t', `\v', `\x').  These
+  can cause similar problems with scripts written for other seds.
+
+
+-i clobbers read-only files
+
+  In short, `sed d -i' will let one delete the contents of
+  a read-only file, and in general the `-i' option will let
+  one clobber protected files.  This is not a bug, but rather a
+  consequence of how the Unix filesystem works.
+
+  The permissions on a file say what can happen to the data
+  in that file, while the permissions on a directory say what can
+  happen to the list of files in that directory.  `sed -i'
+  will not ever open for writing  a file that is already on disk,
+  rather, it will work on a temporary file that is finally renamed
+  to the original name: if you rename or delete files, you're actually
+  modifying the contents of the directory, so the operation depends on
+  the permissions of the directory, not of the file).  For this same
+  reason, sed will not let one use `-i' on a writeable file in a
+  read-only directory (but unbelievably nobody reports that as a
+  bug...).
+
+
+`0a' does not work (gives an error)
+
+  There is no line 0.  0 is a special address that is only used to treat
+  addresses like `0,/RE/' as active when the script starts: if you
+  write `1,/abc/d' and the first line includes the word `abc', then
+  that match would be ignored because address ranges must span at least
+  two lines (barring the end of the file); but what you probably wanted is
+  to delete every line up to the first one including `abc', and this
+  is obtained with `0,/abc/d'.
+
+
+`[a-z]' is case insensitive
+
+  You are encountering problems with locales.  POSIX mandates that `[a-z]'
+  uses the current locale's collation order -- in C parlance, that means
+  strcoll(3) instead of strcmp(3).  Some locales have a case insensitive
+  strcoll, others don't: one of those that have problems is Estonian.
+
+  Another problem is that [a-z] tries to use collation symbols.  This
+  only happens if you are on the GNU system, using GNU libc's regular
+  expression matcher instead of compiling the one supplied with GNU sed.
+  In a Danish locale, for example, the regular expression `^[a-z]$'
+  matches the string `aa', because aa is a single collating symbol that
+  comes after `a' and before `b'; `ll' behaves similarly in Spanish
+  locales, or `ij' in Dutch locales.
+
+  To work around these problems, which may cause bugs in shell scripts,
+  set the LC_ALL environment variable to `C', or set the locale on a
+  more fine-grained basis with the other LC_* environment variables.
diff --git a/src/sed/COPYING b/src/sed/COPYING
new file mode 100644
index 0000000..623b625
--- /dev/null
+++ b/src/sed/COPYING
@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+     51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	    How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year  name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/src/sed/COPYING.DOC b/src/sed/COPYING.DOC
new file mode 100644
index 0000000..1a86456
--- /dev/null
+++ b/src/sed/COPYING.DOC
@@ -0,0 +1,355 @@
+		GNU Free Documentation License
+		   Version 1.1, March 2000
+
+ Copyright (C) 2000  Free Software Foundation, Inc.
+     51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+0. PREAMBLE
+
+The purpose of this License is to make a manual, textbook, or other
+written document "free" in the sense of freedom: to assure everyone
+the effective freedom to copy and redistribute it, with or without
+modifying it, either commercially or noncommercially.  Secondarily,
+this License preserves for the author and publisher a way to get
+credit for their work, while not being considered responsible for
+modifications made by others.
+
+This License is a kind of "copyleft", which means that derivative
+works of the document must themselves be free in the same sense.  It
+complements the GNU General Public License, which is a copyleft
+license designed for free software.
+
+We have designed this License in order to use it for manuals for free
+software, because free software needs free documentation: a free
+program should come with manuals providing the same freedoms that the
+software does.  But this License is not limited to software manuals;
+it can be used for any textual work, regardless of subject matter or
+whether it is published as a printed book.  We recommend this License
+principally for works whose purpose is instruction or reference.
+
+
+1. APPLICABILITY AND DEFINITIONS
+
+This License applies to any manual or other work that contains a
+notice placed by the copyright holder saying it can be distributed
+under the terms of this License.  The "Document", below, refers to any
+such manual or work.  Any member of the public is a licensee, and is
+addressed as "you".
+
+A "Modified Version" of the Document means any work containing the
+Document or a portion of it, either copied verbatim, or with
+modifications and/or translated into another language.
+
+A "Secondary Section" is a named appendix or a front-matter section of
+the Document that deals exclusively with the relationship of the
+publishers or authors of the Document to the Document's overall subject
+(or to related matters) and contains nothing that could fall directly
+within that overall subject.  (For example, if the Document is in part a
+textbook of mathematics, a Secondary Section may not explain any
+mathematics.)  The relationship could be a matter of historical
+connection with the subject or with related matters, or of legal,
+commercial, philosophical, ethical or political position regarding
+them.
+
+The "Invariant Sections" are certain Secondary Sections whose titles
+are designated, as being those of Invariant Sections, in the notice
+that says that the Document is released under this License.
+
+The "Cover Texts" are certain short passages of text that are listed,
+as Front-Cover Texts or Back-Cover Texts, in the notice that says that
+the Document is released under this License.
+
+A "Transparent" copy of the Document means a machine-readable copy,
+represented in a format whose specification is available to the
+general public, whose contents can be viewed and edited directly and
+straightforwardly with generic text editors or (for images composed of
+pixels) generic paint programs or (for drawings) some widely available
+drawing editor, and that is suitable for input to text formatters or
+for automatic translation to a variety of formats suitable for input
+to text formatters.  A copy made in an otherwise Transparent file
+format whose markup has been designed to thwart or discourage
+subsequent modification by readers is not Transparent.  A copy that is
+not "Transparent" is called "Opaque".
+
+Examples of suitable formats for Transparent copies include plain
+ASCII without markup, Texinfo input format, LaTeX input format, SGML
+or XML using a publicly available DTD, and standard-conforming simple
+HTML designed for human modification.  Opaque formats include
+PostScript, PDF, proprietary formats that can be read and edited only
+by proprietary word processors, SGML or XML for which the DTD and/or
+processing tools are not generally available, and the
+machine-generated HTML produced by some word processors for output
+purposes only.
+
+The "Title Page" means, for a printed book, the title page itself,
+plus such following pages as are needed to hold, legibly, the material
+this License requires to appear in the title page.  For works in
+formats which do not have any title page as such, "Title Page" means
+the text near the most prominent appearance of the work's title,
+preceding the beginning of the body of the text.
+
+
+2. VERBATIM COPYING
+
+You may copy and distribute the Document in any medium, either
+commercially or noncommercially, provided that this License, the
+copyright notices, and the license notice saying this License applies
+to the Document are reproduced in all copies, and that you add no other
+conditions whatsoever to those of this License.  You may not use
+technical measures to obstruct or control the reading or further
+copying of the copies you make or distribute.  However, you may accept
+compensation in exchange for copies.  If you distribute a large enough
+number of copies you must also follow the conditions in section 3.
+
+You may also lend copies, under the same conditions stated above, and
+you may publicly display copies.
+
+
+3. COPYING IN QUANTITY
+
+If you publish printed copies of the Document numbering more than 100,
+and the Document's license notice requires Cover Texts, you must enclose
+the copies in covers that carry, clearly and legibly, all these Cover
+Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
+the back cover.  Both covers must also clearly and legibly identify
+you as the publisher of these copies.  The front cover must present
+the full title with all words of the title equally prominent and
+visible.  You may add other material on the covers in addition.
+Copying with changes limited to the covers, as long as they preserve
+the title of the Document and satisfy these conditions, can be treated
+as verbatim copying in other respects.
+
+If the required texts for either cover are too voluminous to fit
+legibly, you should put the first ones listed (as many as fit
+reasonably) on the actual cover, and continue the rest onto adjacent
+pages.
+
+If you publish or distribute Opaque copies of the Document numbering
+more than 100, you must either include a machine-readable Transparent
+copy along with each Opaque copy, or state in or with each Opaque copy
+a publicly-accessible computer-network location containing a complete
+Transparent copy of the Document, free of added material, which the
+general network-using public has access to download anonymously at no
+charge using public-standard network protocols.  If you use the latter
+option, you must take reasonably prudent steps, when you begin
+distribution of Opaque copies in quantity, to ensure that this
+Transparent copy will remain thus accessible at the stated location
+until at least one year after the last time you distribute an Opaque
+copy (directly or through your agents or retailers) of that edition to
+the public.
+
+It is requested, but not required, that you contact the authors of the
+Document well before redistributing any large number of copies, to give
+them a chance to provide you with an updated version of the Document.
+
+
+4. MODIFICATIONS
+
+You may copy and distribute a Modified Version of the Document under
+the conditions of sections 2 and 3 above, provided that you release
+the Modified Version under precisely this License, with the Modified
+Version filling the role of the Document, thus licensing distribution
+and modification of the Modified Version to whoever possesses a copy
+of it.  In addition, you must do these things in the Modified Version:
+
+A. Use in the Title Page (and on the covers, if any) a title distinct
+   from that of the Document, and from those of previous versions
+   (which should, if there were any, be listed in the History section
+   of the Document).  You may use the same title as a previous version
+   if the original publisher of that version gives permission.
+B. List on the Title Page, as authors, one or more persons or entities
+   responsible for authorship of the modifications in the Modified
+   Version, together with at least five of the principal authors of the
+   Document (all of its principal authors, if it has less than five).
+C. State on the Title page the name of the publisher of the
+   Modified Version, as the publisher.
+D. Preserve all the copyright notices of the Document.
+E. Add an appropriate copyright notice for your modifications
+   adjacent to the other copyright notices.
+F. Include, immediately after the copyright notices, a license notice
+   giving the public permission to use the Modified Version under the
+   terms of this License, in the form shown in the Addendum below.
+G. Preserve in that license notice the full lists of Invariant Sections
+   and required Cover Texts given in the Document's license notice.
+H. Include an unaltered copy of this License.
+I. Preserve the section entitled "History", and its title, and add to
+   it an item stating at least the title, year, new authors, and
+   publisher of the Modified Version as given on the Title Page.  If
+   there is no section entitled "History" in the Document, create one
+   stating the title, year, authors, and publisher of the Document as
+   given on its Title Page, then add an item describing the Modified
+   Version as stated in the previous sentence.
+J. Preserve the network location, if any, given in the Document for
+   public access to a Transparent copy of the Document, and likewise
+   the network locations given in the Document for previous versions
+   it was based on.  These may be placed in the "History" section.
+   You may omit a network location for a work that was published at
+   least four years before the Document itself, or if the original
+   publisher of the version it refers to gives permission.
+K. In any section entitled "Acknowledgements" or "Dedications",
+   preserve the section's title, and preserve in the section all the
+   substance and tone of each of the contributor acknowledgements
+   and/or dedications given therein.
+L. Preserve all the Invariant Sections of the Document,
+   unaltered in their text and in their titles.  Section numbers
+   or the equivalent are not considered part of the section titles.
+M. Delete any section entitled "Endorsements".  Such a section
+   may not be included in the Modified Version.
+N. Do not retitle any existing section as "Endorsements"
+   or to conflict in title with any Invariant Section.
+
+If the Modified Version includes new front-matter sections or
+appendices that qualify as Secondary Sections and contain no material
+copied from the Document, you may at your option designate some or all
+of these sections as invariant.  To do this, add their titles to the
+list of Invariant Sections in the Modified Version's license notice.
+These titles must be distinct from any other section titles.
+
+You may add a section entitled "Endorsements", provided it contains
+nothing but endorsements of your Modified Version by various
+parties--for example, statements of peer review or that the text has
+been approved by an organization as the authoritative definition of a
+standard.
+
+You may add a passage of up to five words as a Front-Cover Text, and a
+passage of up to 25 words as a Back-Cover Text, to the end of the list
+of Cover Texts in the Modified Version.  Only one passage of
+Front-Cover Text and one of Back-Cover Text may be added by (or
+through arrangements made by) any one entity.  If the Document already
+includes a cover text for the same cover, previously added by you or
+by arrangement made by the same entity you are acting on behalf of,
+you may not add another; but you may replace the old one, on explicit
+permission from the previous publisher that added the old one.
+
+The author(s) and publisher(s) of the Document do not by this License
+give permission to use their names for publicity for or to assert or
+imply endorsement of any Modified Version.
+
+
+5. COMBINING DOCUMENTS
+
+You may combine the Document with other documents released under this
+License, under the terms defined in section 4 above for modified
+versions, provided that you include in the combination all of the
+Invariant Sections of all of the original documents, unmodified, and
+list them all as Invariant Sections of your combined work in its
+license notice.
+
+The combined work need only contain one copy of this License, and
+multiple identical Invariant Sections may be replaced with a single
+copy.  If there are multiple Invariant Sections with the same name but
+different contents, make the title of each such section unique by
+adding at the end of it, in parentheses, the name of the original
+author or publisher of that section if known, or else a unique number.
+Make the same adjustment to the section titles in the list of
+Invariant Sections in the license notice of the combined work.
+
+In the combination, you must combine any sections entitled "History"
+in the various original documents, forming one section entitled
+"History"; likewise combine any sections entitled "Acknowledgements",
+and any sections entitled "Dedications".  You must delete all sections
+entitled "Endorsements."
+
+
+6. COLLECTIONS OF DOCUMENTS
+
+You may make a collection consisting of the Document and other documents
+released under this License, and replace the individual copies of this
+License in the various documents with a single copy that is included in
+the collection, provided that you follow the rules of this License for
+verbatim copying of each of the documents in all other respects.
+
+You may extract a single document from such a collection, and distribute
+it individually under this License, provided you insert a copy of this
+License into the extracted document, and follow this License in all
+other respects regarding verbatim copying of that document.
+
+
+7. AGGREGATION WITH INDEPENDENT WORKS
+
+A compilation of the Document or its derivatives with other separate
+and independent documents or works, in or on a volume of a storage or
+distribution medium, does not as a whole count as a Modified Version
+of the Document, provided no compilation copyright is claimed for the
+compilation.  Such a compilation is called an "aggregate", and this
+License does not apply to the other self-contained works thus compiled
+with the Document, on account of their being thus compiled, if they
+are not themselves derivative works of the Document.
+
+If the Cover Text requirement of section 3 is applicable to these
+copies of the Document, then if the Document is less than one quarter
+of the entire aggregate, the Document's Cover Texts may be placed on
+covers that surround only the Document within the aggregate.
+Otherwise they must appear on covers around the whole aggregate.
+
+
+8. TRANSLATION
+
+Translation is considered a kind of modification, so you may
+distribute translations of the Document under the terms of section 4.
+Replacing Invariant Sections with translations requires special
+permission from their copyright holders, but you may include
+translations of some or all Invariant Sections in addition to the
+original versions of these Invariant Sections.  You may include a
+translation of this License provided that you also include the
+original English version of this License.  In case of a disagreement
+between the translation and the original English version of this
+License, the original English version will prevail.
+
+
+9. TERMINATION
+
+You may not copy, modify, sublicense, or distribute the Document except
+as expressly provided for under this License.  Any other attempt to
+copy, modify, sublicense or distribute the Document is void, and will
+automatically terminate your rights under this License.  However,
+parties who have received copies, or rights, from you under this
+License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+
+10. FUTURE REVISIONS OF THIS LICENSE
+
+The Free Software Foundation may publish new, revised versions
+of the GNU Free Documentation License from time to time.  Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.  See
+http://www.gnu.org/copyleft/.
+
+Each version of the License is given a distinguishing version number.
+If the Document specifies that a particular numbered version of this
+License "or any later version" applies to it, you have the option of
+following the terms and conditions either of that specified version or
+of any later version that has been published (not as a draft) by the
+Free Software Foundation.  If the Document does not specify a version
+number of this License, you may choose any version ever published (not
+as a draft) by the Free Software Foundation.
+
+
+ADDENDUM: How to use this License for your documents
+
+To use this License in a document you have written, include a copy of
+the License in the document and put the following copyright and
+license notices just after the title page:
+
+      Copyright (c)  YEAR  YOUR NAME.
+      Permission is granted to copy, distribute and/or modify this document
+      under the terms of the GNU Free Documentation License, Version 1.1
+      or any later version published by the Free Software Foundation;
+      with the Invariant Sections being LIST THEIR TITLES, with the
+      Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.
+      A copy of the license is included in the section entitled "GNU
+      Free Documentation License".
+
+If you have no Invariant Sections, write "with no Invariant Sections"
+instead of saying which ones are invariant.  If you have no
+Front-Cover Texts, write "no Front-Cover Texts" instead of
+"Front-Cover Texts being LIST"; likewise for Back-Cover Texts.
+
+If your document contains nontrivial examples of program code, we
+recommend releasing these examples in parallel under your choice of
+free software license, such as the GNU General Public License,
+to permit their use in free software.
diff --git a/src/sed/ChangeLog b/src/sed/ChangeLog
new file mode 100644
index 0000000..89b7c67
--- /dev/null
+++ b/src/sed/ChangeLog
@@ -0,0 +1,2746 @@
+2006-02-03  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (compile_program) <case 'y'>: Pass false to match_slash.
+
+2005-09-07  Paolo Bonzini  <bonzini@gnu.org>
+
+	* lib/regcomp.c: Update from upstream.
+	* lib/regex.c: Update from upstream.
+	* lib/regex_.h: Update from upstream.
+	* lib/regex_internal.c: Update from upstream.
+	* lib/regex_internal.h: Update from upstream.
+	* lib/regexec.c: Update from upstream.
+
+2005-08-30  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/execute.c (reset_addresses): Never activate ADDR_IS_NUM_MOD
+	addresses.
+	* testsuite/modulo.good, testsuite/modulo.inp, testsuite/modulo.sed:
+	New.
+	* testsuite/Makefile.tests: Add new testcase.
+	* testsuite/Makefile.am: Add new testcase.
+	* testsuite/Makefile.in: Regenerate.
+
+2005-05-18  Maciej W. Rozycki  <macro@linux-mips.org>
+
+	* configure.ac: Use a cache variable for the libcP test.
+	* configure: Regenerate.
+
+2005-05-16  Eero Hakkinen  <eero17@bigfoot.com>
+
+	* sed/compile.c (snarf_char_class): Fix handling of 
+	[^]xyz].
+
+2005-04-04  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/execute.c (process_files): Do not add a default
+	command-line in in-place editing mode.
+
+2005-02-10  Paolo Bonzini  <bonzini@gnu.org>
+
+	* testsuite/Makefile.tests: Add new testcase.
+	* testsuite/Makefile.am: Add new testcase.
+	* testsuite/Makefile.in: Regenerate.
+	* testsuite/appquit.good, testsuite/appquit.inp,
+	testsuite/appquit.sed: New testcase.
+	* testsuite/readin.sed: Quit after the last r command.
+	* testsuite/readin.good: Adjust.
+	* sed/execute.c (execute_program): Dump the results of the
+	a/r/R commands just before quitting.
+
+2005-02-10  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/regexp.c: Fix off-by-one error in the "invalid reference
+	to subexpression" message.  Debian bug 294339.
+
+2005-02-08  Paolo Bonzini  <bonzini@gnu.org>
+
+	* lib/obstack.h: include config.h.
+
+2005-02-01  Paolo Bonzini  <bonzini@gnu.org>
+
+	* doc/Makefile.am: Don't enable MAKEINFO_HTML and TEXI2HTML_HTML
+	rules unless BUILD_HTML.
+
+2005-01-25  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/regexp.c: Fix building on GCC 2.95 and earlier.
+
+2004-12-26  Paolo Bonzini  <bonzini@gnu.org>
+
+	Do not use leftmost-longest matching for addresses.
+
+	* NEWS: Add a note about this.
+	* testsuite/recall2.good, testsuite/recall2.inp,
+	testsuite/recall2.sed: New test.
+	* testsuite/Makefile.am, testsuite/Makefile.tests: Add the
+	recall2 test.
+	* sed/sed.h (struct regex): New.
+	(struct addr, struct subst, compile_regex, match_regex,
+	release_regex): Use it instead of regex_t.
+	* sed/compile.c (compile_program): Update for new meaning of
+	the third parameter of compile_regex.
+	* sed/execute.c (do_subst): Pass less conservative value to
+	the regsize parameter of match_regex.
+	* sed/regexp.c (compile_regex_1): New, extracted out of
+	compile_regex.  The third parameter, needed_sub, now includes
+	\0 (so 10 means that \0 .. \9 are needed).  Pass RE_NO_SUB
+	if needed_sub is zero.
+	(compile_regex): Accept a struct regex instead of a regex_t.
+	Save the regular expression's text.
+	(match_regex): Accept a struct regex instead of a regex_t.
+	Recompile the pattern if it was compiled with RE_NO_SUB.
+	(release_regex): Accept a struct regex instead of a regex_t.
+
+	* doc/Makefile.am: Generate sed.texi correctly when
+	building outside srcdir.
+
+2004-12-26  Paolo Bonzini  <bonzini@gnu.org>
+
+	* BUGS: Add section about [a-z] matching uppercase characters,
+	and other locale issues.
+	* doc/sed-in.texi [!PERL]: Likewise.
+
+2004-11-15  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/execute.c (str_append_modified): Copy the first character
+	when using \l or \u in a multi-byte configuration.  Use
+	WCRTOMB instead of wcrtomb.
+	* sed/sed.h (WCRTOMB): New.
+
+2004-11-11  Paolo Bonzini  <bonzini@gnu.org>
+
+	* tst-rxspecer.c: Do not mix instructions and
+	declarations.
+	* basicdefs.h: Include locale.h before #defining
+	gettext, to avoid breakage under Solaris.
+	* sed/sed.c: do not include locale.h.
+
+2004-11-03  Paolo Bonzini  <bonzini@gnu.org>
+
+	* bug-regex11.c: Improve portability.
+	* bug-regex12.c: Improve portability.
+	* bug-regex13.c: Improve portability.
+	* bug-regex14.c: Improve portability.
+	* bug-regex21.c: Improve portability.
+	* bug-regex9.c: Improve portability.
+	* tst-boost.c: Improve portability.
+	* tst-pcre.c: Improve portability.
+	* tst-regex.c: Improve portability.
+	* tst-rxspencer.c: Improve portability.
+
+2004-10-08  Paolo Bonzini  <bonzini@gnu.org>
+
+	* lib/utils.c (utils_id_s): Renamed to open_files.
+	(struct id): Renamed to struct open_file.
+
+2004-10-08  Jakub Jelinek  <jakub@redhat.com>
+
+	* testsuite/Makefile.tests (bug-regex*, run-tests,
+	run-ptests): Use $(SED).
+	(version): Likewise; prepend $(SED) invocation with $(SEDENV).
+
+2004-08-16  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.1.2 released.
+
+2004-08-06  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (bad_command): Fix off-by-one error.
+	(snarf_char_class): Fix problem with [.....[] (i.e.
+	last char in class is a bracket.
+
+2004-06-30  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.1.1 released.
+
+2004-06-29  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (mark_subst_opts): Return int.
+	* sed/execute.c (open_next_file): Fix uninitialized
+	variable.
+
+2004-06-10  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.1 released.
+
+2004-03-25  Paolo Bonzini  <bonzini@gnu.org>
+
+	* lib/obstack.h: Get current version.
+
+2004-03-13  Paolo Bonzini  <bonzini@gnu.org>
+
+	Exit as soon as possible on an I/O error, and with
+	a better error message.
+
+	* lib/utils.c (ck_mkstemp, ck_rename, ck_getline): New
+	functions.  Save temporary files into utils_id_s.
+	(struct id): Add a field named temp.
+	(ck_fopen): Init the new temp field of struct id.
+	(panic): Unlink temporary files before exiting.
+	* sed/execute.c (read_file_line): Use ck_getline.
+	(closedown): Use ck_rename.
+	(open_next_file): Use ck_mkstemp.
+
+2004-01-20  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/sed.h (enum addr_state): New definition.
+	(enum addr_type): Remove ADDR_IS_NUM2.
+	(struct sed_cmd): Replace a1_matched with range_state.
+	* sed/compile.c (next_cmd_entry): Use range_state.
+	(compile_program): Death to ADDR_IS_NUM2.  Compile
+	N,Mp as Np if N>=M.
+	* sed/execute.c (match_address_p): Rewritten.  Handle
+	ADDR_IS_NUM here.
+	(match_an_address_p): Suit to new match_address_p.
+	(execute_program): Adjust to use range_state in `c'.
+	Handle addr_bang here.
+	(reset_addresses): Use range_state.
+
+	(struct input): New field "reset_at_next_file".
+	(read_pattern_space): Use it instead of "separate_files".
+	(process_files): Initialize it.
+	
+2004-01-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/sed.h: Do not include wchar.h and wctype.h, and do
+	not include the alloca stuff.
+	* basicdefs.h: Move all that here.
+
+2004-01-15  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/regexp.c [REG_PERL]: Use REG_STARTEND instead of regexec2.
+
+2004-01-09  Paul Eggert  <eggert@twinsun.com>
+	    Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/sed.h (posixicity): New variable, replaces POSIXLY_CORRECT.
+	* sed/sed.c (main): Set it.
+	* sed/compile.c: Use it instead of POSIXLY_CORRECT.
+	* sed/execute.c: Use it instead of POSIXLY_CORRECT.
+	* doc/sed-in.texi: Document it and --posix.
+
+2004-01-05  Paul Eggert  <eggert@twinsun.com>
+	    Paolo Bonzini  <bonzini@gnu.org>
+
+        * NEWS: Fix [\n] to match either backslash or n in POSIXLY_CORRECT mode.
+        * doc/sed-in.texi: Document this.  Also, document regular expressions
+        a bit better overall, using terminology that's more similar to POSIX.
+	* sed/sed.h (enum text_types): New definition.
+	* sed/compile.c (normalize_text): Replace final parameter with one of
+	type normalize_text.  If TEXT_REGEX and in POSIXLY_CORRECT mode,
+	grok character classes without replacing \n inside them.
+
+2004-01-03  Paolo Bonzini  <bonzini@gnu.org>
+
+        * sed/execute.c (execute_program): print final line
+        after executing N, if not POSIXLY_CORRECT.
+
+2003-12-28  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c: fix "\\\n" in RHS of s command.
+	Reported by Mike Castle.
+	* testsuite/bkslashes.inp, testsuite/bkslashes.good,
+	testsuite/bkslashes.sed: New files.
+	* testsuite/Makefile.am, testsuite/Makefile.tests: Add
+	the bkslashes test.
+
+2003-12-16  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.0b released.
+
+	* sed/mbcs.c: New file.
+	* sed/sed.h: Declare macros for mbcs.c.
+	* sed/compile.c: Use them.
+	(brlen): Moved to mbcs.c.
+	* sed/execute.c: Use them.
+	* sed/sed.c: call initialize_mbcs ().
+
+2003-12-14  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/regex.c (match_regex): fix memory leak.
+
+2003-11-27  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/execute.c (reset_addresses): leave addresses 0
+	and 0~STEP enabled.
+
+2003-11-15  Jakub Jelinek  <jakub@redhat.com>
+
+	* sed/regex.c: Use fastmap.
+
+2003-09-21  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.0a released.
+
+	* sed/execute.c (struct line): Add mbstate field.
+	(str_append): Keep mbstate up to date.
+	(str_append_modified): Likewise, and use towupper/towlower.
+	(line_init): Initialize mbstate.
+	(line_copy): Copy mbstate.
+	(line_append): Copy mbstate.
+
+2003-07-15  Stepan Kasal  <kasal@ucw.cz>
+	    Paolo Bonzini  <bonzini@fnu.org>
+
+	Change the way we treat lines which are not terminated by a newline.
+	Such lines are printed without the terminating newline (as before)
+	but as soon as more text is sent to the same output stream, the
+	missing newline is printed, so that the two lines don't concatenate.
+
+	* sed/execute.c (output_file): Is now struct output; users adjusted
+	to access the fp field, call output_missing_newline before, and
+	call flush_output afterwards.
+	(read_file_line): Set line.chomped FALSE each time we encounter a
+	line without the newline terminator, no matter whether this is the
+	last input file or not, and no matter whether we are in
+	POSIXLY_CORRECT mode or not.
+	(output_missing_newline): New function which prints the suppressed
+	newline, if necessary.
+	(flush_output): New function for a common pattern.
+	(output_line): Use struct output, set its flag accordingly.
+	(dump_append_queue): Use `ck_fwrite' instead of output_line.
+	(do_list): Flush the output stream at the end.
+	(closedown): The code ``if(separate_files) rewind_read_files();''
+	(read_pattern_space): ... has been moved here.
+	(process_files): Don't do the default `p' at the end, ...
+	(execute_program): ... as this function is now responsible for it;
+	add the code to the end of the function and to the command `q';
+	the commands `d', `D' and `Q' thus no longer have to forge an empty
+	line.
+	(execute_program): Commands `c' and `i' no longer call the
+	function output_line with chomped==FALSE; instead, they chomp
+	the text and call the function with chomped==TRUE.
+	(execute_program): Command `e' no longer uses output_line; it
+	calls ck_fwrite directly.  Commands `e', `L' and `=' flush
+	the output stream at the end.
+	* sed/compile.c (special_files): Use `struct output' instead of the
+	file name.
+	(get_openfile): ... special files are no longer copied to file_read
+	or file_write.
+	(fp_list): Move to sed.h (users adjusted) and rename as...
+	* sed/sed.h (struct output): ...this.  New flag missing_newline
+	associated to the output stream.
+	(struct sed_cmd, struct subst): Use `struct output *' instead of mere
+	`FILE *'; adjust compile.c and execute.c.
+	* testsuite/noeolw.sed, testsuite/noeolw.good, testsuite/noeolw.1good,
+	testsuite/noeolw.2good: New tests
+
+2003-07-15  Stepan Kasal  <kasal@ucw.cz>
+
+        * lib/utils.h, sed/sed.h: #include "basicdefs.h",
+        don't include it from various *.c files.
+        * sed/regex.c: Don't include regex.h as it's included via sed.h.
+
+2003-06-11  Paolo Bonzini  <bonzini@gnu.org>
+
+	* lib/getline.c: Don't realloc with first param = NULL.
+
+2003-05-07  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/execute.c: Make treatment of ADDR_IS_NUM_MOD
+	simpler, and fix bugs in 0~5,+1
+	* sed/compile.c: Complain about addresses like 0
+	and 0,3 which are sources of misunderstandings.
+	Reported by Akim Demaille <akim@epita.fr>
+
+2003-03-25  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.0.7 released
+
+	* sed/execute.c (append_replacement): Extract from
+	do_subst
+	(do_subst): Don't update count when a match was
+	skipped.
+	* testsuite/xbxcx3.good, testsuite/xbxcx3.sed, 
+	testsuite/xbxcx3.inp: Regression tests
+
+2003-03-23  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/execute.c (do_subst): Fix several bugs with
+	numbered matches
+	* testsuite/numsub2.good, testsuite/numsub2.inp,
+	testsuite/numsub2.sed, testsuite/numsub3.good,
+	testsuite/numsub3.inp, testsuite/numsub3.sed,
+	testsuite/numsub4.good, testsuite/numsub4.inp,
+	testsuite/numsub4.sed, testsuite/numsub5.good,
+	testsuite/numsub5.inp, testsuite/numsub5.sed:
+	regression tests for the bugs
+
+2003-03-15  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.0.6 released
+
+	* lib/mkstemp.c: Include sys/file.h if available for the
+	benefit of Ultrix
+
+2003-03-14  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c: Replace flagT with bool
+	* sed/execute.c: Replace flagT with bool
+	* sed/fmt.c: Replace flagT with bool
+	* sed/sed.c: Replace flagT with bool
+	* sed/regex.c: Replace flagT with bool
+
+2003-03-13  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (compile_program): Understand parameter
+	of `v'.
+
+	* sed/sed.c (usage): Split help message into multiple
+	strings
+	(main): Don't understand -h and -V
+
+2003-03-12  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (match_slash, snarf_char_class):  More
+	multibyte character support
+	(brlen): New function
+	* testsuite/classes.good, testsuite/classes.inp,
+	testsuite/classes.sed: New files
+
+2003-03-10  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (match_slash): Strip the \ in front of
+	slashes (so that the matcher sees x/ for s/x\///).  Don't
+	match / and [ unless at the start of a character.
+
+2003-02-18  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/regex.c (compile_regex): // matches the last regular
+	expression even in POSIXLY_CORRECT mode.
+	* sed/compile.c (normalize_text): Treat multibyte character
+	sets correctly
+	(read_text): Don't swallow backslash sequences, run text
+	through normalize_text
+	(compile_program): Ditto for y command
+
+	* sed/compile.c (normalize_text): Add parameter that says
+	whether the text will be processed further to remove more
+	backslash escapes.  Callers adjusted
+	(match_slash): Remove same parameter from here.  Callers adjusted.
+
+2003-02-15  Paolo Bonzini  <bonzini@gnu.org>
+
+        * sed/sed.h: Fix prototype for match_regex, declare re_registers
+        if REG_PERL
+        * sed/execute.c (do_subst): Use re_registers
+        * sed/regex.c (copy_regs): New function
+        [REG_PERL]: Use re_registers
+        [!REG_PERL]: Avoid using internal entry points, support pre-glibc
+	2.3 regex for the sake of --without-included-regex.
+
+2003-01-04  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/sed.h: Move some stuff from here...
+	* sed/basicdefs.h: ...to here
+	* lib/utils.c (ck_fopen): Add FAIL parameter
+	* lib/utils.h: Adjust parameter
+	* sed/compile.c, sed/execute.c, sed/sed.c: Adjust callers
+
+	* sed/basicdefs.h: Add TRUE/FALSE
+	* sed/compile.c, sed/execute.c, sed/sed.c: Use them
+	* sed/fmt.c: Do not redefine them
+
+2003-01-02  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/sed.c: Bump copyright year
+
+2002-12-24  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/sed.c: Use bindtextdomain
+	* sed/basicdefs.h [__EMX__]: Define initialize_main
+	* lib/getline.c [__EMX__]: Strip trailing CR
+
+	* sed/regex.c: Don't use N_ on the lines that define
+	error messages, some compilers complain.
+
+2002-12-18  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.0.5 released
+
+	* sed/compile.c: Don't use N_ on the lines that define
+	error messages, some compilers complain.
+
+2002-12-16  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c: Improvements to some error messages;
+	`a', `i', `l', `L', `r' accept two addresses except in
+	POSIXLY_CORRECT mode.
+
+2002-12-14  Paolo Bonzini  <bonzini@gnu.org>
+
+	* lib/regex_internal.c: Fix problem on non-glibc
+	systems, from Jakub Jelinek
+	* lib/regex.c (RE_ENABLE_I18N): Conditionalize on
+	HAVE_MBRTOWC and HAVE_WCRTOMB.
+	* lib/getline.c: Fix compilation on non-glibc system
+	* lib/snprintf.c: Fix compilation on non-glibc system
+	* lib/basicdefs.h [P_]: Make more portable
+
+2002-12-12  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.0.4 released
+
+2002-11-21  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.0.3 released
+
+2002-11-19  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.0.2 released
+
+2002-11-05  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.0.1 released
+
+2002-10-23  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 4.0 released
+
+2002-10-28  Paolo Bonzini  <bonzini@gnu.org>
+
+	* lib/utils.c: Don't fail for EBADF in fflush
+	* src/sed.c: the_program is now a global
+
+2002-10-19  Paolo Bonzini  <bonzini@gnu.org>
+
+	* src/sed.c: Print GNU sed in --version for GNU sed,
+	and super-sed for super-sed (thanks to Bruno Haible)
+
+2002-10-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 3.96 released
+
+2002-10-16  Isamu Hasegawa  <isamu@yamato.ibm.com>
+
+	* src/execute.c (execute_program): Multibyte 'y'
+	* src/compile.c (compile_program): Likewise
+	* src/sed.h: Likewise
+
+2002-10-08  Paolo Bonzini  <bonzini@gnu.org>
+
+	*** Version 3.95 released
+
+2002-07-15  Paolo Bonzini  <bonzini@gnu.org>
+
+	* src/sed.h: rfile --> fname, wfile --> fp
+	* src/compile.c (compile_command): Parse 'R' like 'w', use
+	separate lists for file read and file write
+	* src/compile.c (get_openfile): New name of get_writefile
+	* src/compile.c (rewind_read_files): New function
+	* src/sed.h: Declared here
+	* src/execute.c (closedown): And called here
+	* src/execute.c (append_queue): Added 'free' field
+	* src/execute.c (execute_program): Implement 'R'
+
+2002-06-09  Paolo Bonzini  <bonzini@gnu.org>
+
+	* src/execute.c (do_subst): Replaced flag was set on every
+	regexp match, while the first matches should not set it
+	for s///N.
+
+2002-06-08  Paolo Bonzini  <bonzini@gnu.org>
+
+	* src/compile.c (compile_file): Open the script in text mode
+	* lib/utils.c (utils_fp_name): Shorten the output
+	* lib/utils.c (ck_fread, ck_fwrite, ck_fflush): Clearerr
+	after printing an error.
+	* lib/utils.c (ck_fclose): Work on stdout as well if stream == NULL
+	and flush before closing to check for errors
+
+2002-05-30  Paolo Bonzini  <bonzini@gnu.org>
+
+	* src/compile.c (compile_program): Implement W
+	* src/execute.c (execute_program): Likewise
+
+2002-04-23  Paolo Bonzini  <bonzini@gnu.org>
+
+	* src/sed.c (usage, main): Parse -s
+	* src/sed.h (separate_files): New variable
+	* src/execute.c (separate_files): New variable
+	* src/execute.c (reset_addresses): New function to make range
+	addresses work separately on each file when using in-place
+	editing
+	* src/execute.c (execute_program): The `n' and `N' use test_eof
+	so that the script restarts at end of file, not at end of input
+	* src/execute.c (test_dollar_EOF): Make $ work separately
+	on each file when using -s; renamed to test_eof
+	
+2002-02-28  Paolo Bonzini  <bonzini@gnu.org>
+
+	* src/sed.h (struct sed_cmd): exit_status -> int_arg
+	* src/compile.c: Likewise
+	* src/execute.c: Likewise
+
+	* src/compile.c (compile_command): Parse `l' like
+	`q' and `Q'; default for int_arg is -1
+	* src/execute.c (do_list): New argument, used instead
+	of lcmd_out_line_len
+	(execute_program): Interpret int_arg for the `l' command;
+	return 0 for `q' and `Q' if int_arg is -1
+
+	* src/fmt.c: New file, looted from GNU textutils
+	* src/compile.c: Parse `L'
+	* src/execute.c: Execute `L'
+	
+2002-02-14  Paolo Bonzini  <bonzini@gnu.org>
+
+	* src/execute.c (str_append_modified): Fixed a stupid
+	bug (stop condition was *start == *end, meant to be
+	start == end)
+
+2002-02-05  Paolo Bonzini  <bonzini@gnu.org>
+
+	* lib/utils.c: Added directory parameter to
+	temp_file_template
+	* lib/utils.h: Adjusted
+	* src/execute.c: Adjusted
+
+2002-01-29  Paolo Bonzini  <bonzini@gnu.org>
+
+	* src/compile.c (mark_subst_opts): Signal an error if
+	there are multiple g or p options
+	* src/compile.c (compile_program): Raise appropriate
+	error if second string in y command is longer than
+	first (used to be "excess junk after command")
+
+2001-12-31  Paolo Bonzini  <bonzini@gnu.org>
+
+	* lib/getline.c: Strip the terminating \r under Windows
+	or MS-DOS.
+	
+	* testsuite/xemacs.sed, testsuite/xemacs.inp,
+	testsuite/xemacs.good: Submitted by John Fremlin
+	(john@fremlin.de)
+
+2001-12-27  Paolo Bonzini  <bonzini@gnu.org>
+	
+	* sed/execute.c (do_subst): Flags in optimized s/^xx/
+	commands were discarded (see the change below)
+
+2001-12-19  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/execute.c (resize_line): Limit inactive space to two
+	thirds of a buffer
+	* sed/execute.c (line_init): Initialize buf->active
+	* sed/execute.c (str_append, str_append_modified, line_copy,
+	do_list, do_subst, execute_program, process_files): Operate
+	on active space
+
+	* sed/execute.c (do_subst): Optimize s/^xx// by making a part
+	of the buffer inactive and s/xx$// by truncating it.
+	* sed/execute.c (execute_program): Optimize D by making a part
+	of the buffer inactive
+	
+	* testsuite/uniq.sed, testsuite/uniq.inp, testsuite/uniq.good:
+	added to test P and D commands.
+	* testsuite/fasts.sed, testsuite/fasts.inp, testsuite/fasts.good:
+	added to test the new optimization done on the `s' command.
+
+2001-12-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	* testsuite/dc.inp: Also compute Easter of 2002 :-)
+
+	* sed/execute.c [!HAVE_FCHMOD]: Don't chmod the output file
+	if working in-place
+
+2001-11-12  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/sed.h (struct sed_cmd): a1 is a pointer too
+	* sed/compile.c: Likewise
+	* sed/execute.c: Likewise
+
+	* sed/compile.c: Use obstacks
+	* sed/execute.c: Likewise
+
+2001-11-09  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (mark_subst_opts): Parse option `e',
+	preserve two occurrences of the `e' and `p' options.
+	* sed/execute.c (do_subst) [HAVE_POPEN]: Interpret option
+	`e' (evaluate, like Perl's but uses Bourne shell).
+	* sed/sed.h (struct subst): Add an `eval' flag.
+
+	* sed/compile.c (compile_program): Compile command `e'
+	like `c'.
+	* sed/execute.c (execute_program): Execute command `e'.
+
+2001-09-25  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (get_writefile) [!POSIXLY_CORRECT]:
+	support /dev/stdout
+	* sed/execute.c (open_next_file, closedown): Support
+	in-place editing
+	* sed/execute.c (backup_file_name): New function to
+	support in-place editing
+	* sed/main.c (usage, main): Parse -i.
+	* sed/utils.c: Moved to lib directory
+	
+	* lib/utils.c (temp_file_template): New function.
+	* sed/utils.h: Declared temp_file_template.
+
+2001-09-05  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/execute.c (do_subst): `baaac', if passed through
+	s/a*/x/g, gave `xbxxcx' rather than `xbxcx' (because an
+	empty string matched before the `c'.  Fixed.
+
+	* sed/execute.c: Removed mmap support, I/O is done using
+	getline (slower but more bug-proof).
+	* sed/utils.c: Likewise.
+	* lib/getline.c: New file
+
+2001-03-22  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (normalize_text) [POSIXLY_CORRECT]: Enable
+	escapes in modes other than BRE.
+
+2001-03-21  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (normalize_text): Support \XXX in Perl mode,
+	\oXXX in non-Perl mode.
+
+2001-03-18  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (compile_program): Fixed missing break when
+	compiling 'q' and 'Q'.
+
+	* sed/compile.c (check_final_program): Removed now spurious
+	call to compile_regex
+	* sed/regex.c (compile_regex): Don't track the last compiled
+	regex
+	* sed/regex.c (execute_regex): Track here the last compiled
+	regex
+	
+2001-03-02  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (setup_replacement): Support \[lLuUE] like
+	Perl and vi.
+	* sed/compile.c (new_replacement): Accept new parameter
+	to support \[lLUuE].
+	* sed/sed.h (enum replacement_types): New declaration
+	* sed/execute.c (do_subst): Use new function str_append_modified
+	to apply the changes required via \[lLUuE].
+	* sed/execute.c (str_append_modified): New function
+
+2001-03-02  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (setup_replacement): Count the number of backreferences
+	that the RHS needs
+	* sed/regex.c (compile_regex): Check if there is a sufficient number
+	of backreferences (new argument needed_sub replaces nosub)
+	* sed/compile.c (compile_address, compile_program,
+	check_final_program): Callers adjusted
+
+2001-02-08  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (compile_program): Added `Q' (quit without output)
+	* sed/execute.c (execute_program): Ditto
+
+	* sed/compile.c (compile_program): Fill in exit_status for `q' and `Q'
+	* sed/execute.c (execute_program): Return -1 for `go on', 0..255
+	to set the exit status
+	* sed/execute.c (process_files): Interpret new convention for
+	execute_program, return sed's exit code
+	* sed/sed.c (main): Return process_files's exit code
+	* sed/sed.h (struct sed_cmd): Declare exit_status
+	
+2001-01-07  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c (compile_program): Added `T' (branch if failed)
+	* sed/execute.c (shrink_program, execute_program): Ditto
+
+2001-01-04  Paolo Bonzini  <bonzini@gnu.org>
+
+	* testsuite/Makefile.am: Use automake's implementation
+	of `make check'.  Removed the test targets
+	* testsuite/Makefile.tests: Moved the test targets here
+	(new file).
+	* testsuite/runtest: New file
+
+	* testsuite/Makefile.tests: `khadafy' test uses EREs.
+
+	* testsuite/spencer.inp: Removed the ^* test
+
+	* testsuite/spencer.sh: Don't rely on awk; more comments too
+	
+2001-01-03  Paolo Bonzini  <bonzini@gnu.org>
+   
+	* sed/compile.c(snarf_char_class) [REG_PERL]: Don't parse
+	`\n' specially
+	* sed/compile.c(match_slash) [REG_PERL]: Ditto
+
+	* sed/compile.c(read_text) [REG_PERL]: Support [xX] modifiers
+	* sed/compile.c(mark_subst_opts) [REG_PERL]: Ditto
+
+2000-12-21  Paolo Bonzini  <bonzini@gnu.org>
+
+	* lib/snprintf.c [BOOTSTRAP]: Don't include stdio.h
+	* lib/strerror.c [BOOTSTRAP]: Don't include stdio.h
+	* sed/execute.c [!HAVE_ISATTY]: Don't buffer stdin
+
+2000-12-11  Paolo Bonzini  <bonzini@gnu.org>
+
+	* sed/compile.c(mark_subst_opts): Support [mMsS] flags
+	* sed/compile.c(read_text): Support [MS] flags for 
+	addresses
+	* sed/regex.c(compile_regex): Support arbitrary flags for
+	regncomp.
+
+	* sed/regex.c(compile_regex) [REG_PERL]: Don't call
+	normalize_text.
+
+2000-12-08  Paolo Bonzini  <bonzini@gnu.org>
+
+	* basicdefs.h: Moved here from the `sed' subdirectory.
+	
+	* configure.in: Removed crap to pick a regex engine.
+	Added snprintf to the AC_REPLACE_FUNCS call.
+
+	* lib/snprintf.c: New file.
+	
+	* sed/regex.c(compile_regex): Use regncomp
+	* sed/regex.c(match_regex): Use regexec2
+
+	* sed/compile.c(compile_program): Implemented the `v' command.
+
+	* sed/sed.c(main): Implemented the `r' and `R' options
+
+	* sed/sed.h: Replaced use_extended_syntax_t with
+	extended_regexp_flags to support Perl regular expressions.
+
+	* sed/execute.c(open_next_file): Don't mmap stdin (because
+	we cannot seek into it, so a redirected stdin's contents
+	would not be "eaten" by sed)
+
+Mon Aug 30 23:40:08 PDT 1999  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.02.80 released
+	
+	* sed/execute.c(do_subst): lib/regex.c(re_search_2) seems to
+	want one extra backreference register; humor it.
+
+	* sed/regex.c(compile_regex): work around some odd assumptions
+	that lib/regex.c(re_compile_pattern) makes about our desired
+	RE syntax.
+
+	* configure.in: tweaked version to 3.02.80; added new entries
+	to the ALL_LINGUAS definition.
+
+	* doc/sed.1, doc/sed.texi, BUGS: explicitly request the output
+	of sed --version in bug-reporting instructions.
+
+	* doc/sed.texi: the old "informal seders list" is dead; document
+	the new sed-users mailing list instead (under Other Resources).
+
+
+Thu Aug 19 23:27:54 PDT 1999  Ken Pizzini <ken@gnu.org>
+	
+	* sed/sed.h: Add explicit #include of "regex-sed.h" (rather
+	 than relying on parent file doing so); change the "cmd_regex"
+	 member of sed_cmd: make it a pointer (instead of a struct),
+	 and change its name to cmd_subst; add prototypes for newly
+	 exported functions bad_prog(), normalize_text(), compile_regex(),
+	 match_regex(), and release_regex(); drop rx_testing variable.
+
+	* sed/compile.c: move the compile_regex() function to regex.c;
+	export bad_prog() and normalize_text() functions; eliminate the
+	rx_testing debris; rename the NOLEAKS symbol to more descriptive
+	DEBUG_LEAKS; make cmd_regex to cmd_subst fixes (see above);
+	make use of newly abstracted release_regex() function.
+
+	* sed/execute.c: abstract out the regex matching to
+	regex.c:match_regex(); NOLEAKS to DEBUG_LEAKS change;
+	cmd_regex to cmd_subst structure member name change.
+
+	* sed/execute.c(do_subst): use re_registers/regoff_t instead of
+	regmatch_t to hold the backreference registers, make "offset"
+	always be relative to the beginning of the string (rather than
+	a delta from "start"), defer some matching bookkeeping (e.g.,
+	not_bol_p) to match_regex().
+
+	* sed/sed.c(main): loose rx_testing variable; NOLEAKS
+	(aka DEBUG_LEAKS) code attempting to release
+	_nl_current_default_domain is problematic, so omit it.
+
+	* sed/regex.c: new file --- abstracts out the interface to the
+	regex engine so that less conditional code is required in
+	compile.c and execute.c, and so as to make a change of engine
+	easier; implements compile_regex() (which looks an awful lot
+	like the one that used to live in compile.c), match_regex(),
+	and (if DEBUG_LEAKS is set) release_regex().
+
+Sun Apr 18 04:40:46 PDT 1999  Ken Pizzini <ken@gnu.org>
+
+	* sed/sed.c(main): conditionalize calls to setlocale() and
+	textdomain() to only occur if their support is needed/wanted.
+
+Sun Apr 18 03:01:46 PDT 1999  Ken Pizzini <ken@gnu.org>
+
+	* bootstrap.sh: "foo || bar && baz" was not grouping like I
+	expected ("foo || (bar && baz)") under at least one shell,
+	so change the test for a pre-existing config.h file to an
+	if statement.
+
+	* bootstrap.sh: added -DUSE_REGEX_GNU_H option to the
+	compiler invocation, to ensure that we get a usable
+	regex library included.
+
+Sun Apr 18 02:59:42 PDT 1999  Ken Pizzini <ken@gnu.org>
+
+	* sed/sed.h, sed/utils.c: conditionalized inclusion of <libintl.h>
+	to occur only if ENABLE_NLS is defined.
+
+Sun Apr 18 01:48:45 PDT 1999  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c(xofa,normalize_text,convert_number): change
+	name of xofa() function to convert_number(); change semantics
+	to do all of the work of the text->number conversion.
+
+	* sed/compile.c(normalize_text): add new \dDDD decimal
+	and \oOOO octal escapes.
+
+Sun Mar 28 21:05:07 PST 1999  Ken Pizzini <ken@gnu.org>
+
+	* sed/sed.c(main): if NOLEAKS is set, free up a word that
+	the call to textdomain() allocated.
+
+	* sed/execute.c(read_file_line): plug up (minor) memory leak:
+	if buffer.alloc==0 we may have malloc()'d 1 byte anyway,
+	so be sure to FREE(buffer.text) before calling line_init();
+
+Fri Mar 26 16:52:10 PST 1999  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c(match_slash): somewhere between 3.02
+	and 3.02a we lost the ability to use a newline as
+	the s/// delimiter; restore this ability.
+
+	* sed/compile.c(compile_regex): forget about trying
+	to cache the compiled form of the last RE --- it
+	causes more problems than its worth.  We now only
+	cache the source form.
+
+	* testsuite/help.good: update to reflect output containing
+	new options.
+
+Sun Dec  6 00:51:23 PST 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/utils.c(ck_fwrite): fix i18n bug of using a printf
+	fragment of "item%s" to handle plural text.
+
+Mon Nov 23 11:03:40 PST 1998  Ken Pizzini <ken@gnu.org>
+
+	* doc/sed.1, doc/sed.texi: ran ispell over these
+	files to catch the more obvious typos...
+
+Sun Nov  1 00:09:07 PST 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/execute.c(do_list): make a `lcmd_out_line_len'
+	(--line-length) of zero mean "infinite length",
+	i.e., "never wrap".
+
+Sat Oct 31 23:06:50 PST 1998  Ken Pizzini <ken@gnu.org>
+
+	* execute.c(match_an_address_p,process_files),
+	compile.c(compile_program): back out the "zero-address"
+	changes of 1998-09-27.  It was a neat idea, but there are
+	too many dark corners which don't work well.  The
+	special code for handling line ranges starting at
+	address zero (from 1998-08-31) are still there though:
+	this seems to work fine with no surprises.
+
+Sat Oct 31 22:18:59 PST 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/sed.c, sed/sed.h, sed/execute.c: added new
+	`lcmd_out_line_len' variable.  (Idea suggested by
+	Carlos J. G. Duarte <l38076@alfa.ist.utl.pt>.)
+	Also added ATOI macro (which uses strtoul() if available,
+	with fall-back to atoi()).
+	* sed/sed.c(main): attempt to use COLS environment variable
+	to set a reasonable `lcmd_out_line_len'; added -l/--line-length
+	command-line options to set the new `lcmd_out_line_len' flag.
+	* sed/sed.c(usage): documented new -l/--line-length options.
+	* sed/execute.c(do_list): use `lcmd_out_line_len' variable
+	instead of `LCMD_OUT_LINE_LEN'.
+	* sed/execute.c: deleted now obsolete LCMD_OUT_LINE_LEN define.
+	* configure.in: added strtoul to the AC_CHECK_FUNCS call.
+
+Sat Oct 31 21:37:17 PST 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/sed.c, sed/sed.h, sed/execute.c: added new `force_unbuffered'
+	flag.  (Idea suggested by Frank Strauss <strauss@escape.de>.)
+	* sed/sed.c(main): added -u/--unbuffered command-line options
+	to set the new `force_unbuffered' flag.
+	* sed/sed.c(usage): documented new -u/--unbuffered options.
+	* sed/execute.c: changed the name of the `is_tty' flag in struct
+	input to a more generic `no_buffering'; also removed HAVE_ISATTY
+	conditional on this member.
+	* sed/execute.c(slow_getline): removed HAVE_ISATTY conditonal
+	compilation of this function.
+	* sed/execute.c(output_line): if force_unbuffered is set,
+	then force a fflush() even if writing to stdout.
+	* sed/execute.c(open_next_file): added handling of the
+	new `force_unbuffered' flag so that slow_getline()
+	will always be used for input.
+	* sed/execute.c(read_file_line): changed the (conditionally
+	compiled) test of `input->is_tty' to (unconditionally)
+	use the new spelling `input->no_buffering'.
+
+Thu Oct 15 12:08:09 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* configure.in: deleted AC_ARG_PROGRAM call; this is already
+	done for us by AM_INIT_AUTOMAKE, and we were winding up
+	with a doubled-transform.
+
+Sun Sep 27 01:42:42 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* compile.c(compile_program): remove special-case code for matching
+	address range with a `0' beginning.
+
+	* compile.c(compile_address): change default addr_number to
+	be a pragmatically impossible countT value, instead of zero.
+
+	* execute.c: spell macro REGNEXEC() unconditionally instead of
+	playing with conditional definition of regnexec() macro.
+
+	* execute.c(match_an_address_p): added third argument (and changed
+	callers in match_address_p).  Added special code to ignore
+	non-numeric matches when processing "line zero".
+
+	* execute.c(process_files): added a "line zero" pass through the
+	commands script.
+
+Sun Sep 27 00:20:53 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* compile.c(xofa,normalize_text): new functions.
+	* compile.c(compile_regex): cache last_compiled_re (with its
+	associated flags); add POSIXLY_CORRECT behavior for empty RE.
+	Make use of the new normalize_text() function.
+	* compile.c(setup_replacement): Make use of the new normalize_text()
+	function.
+
+Sat Sep 26 22:59:13 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* lib/regex-gnu.h: added missing prototype for regncomp().
+
+Mon Sep 14 20:47:23 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/sed.c(main): use EXIT_SUCCESS instead of 0, in case
+	we are built on a system (such as VMS) where EXIT_SUCCESS
+	is distinct from 0.
+
+Wed Sep  9 22:17:28 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/Makefile.am: added -I../intl the INCLUDES line; if we are
+	building in a directory outside the source tree and the system
+	we are building on does not have a <libintl.h> header, then
+	the build was failing, because libintl.h is a build-time
+	constructed source file.
+
+	* configure.in: tweaked version to be 3.02b.
+
+Wed Sep  9 19:28:14 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.02a released
+	
+	* sed/compile.c(mark_subst_opts,read_label,compile_program):
+	wherever we accept a ; as a command terminator, also allow a } or
+	a # to appear.  (This allows for less cluttered-looking scripts,
+	such as: sed '/foo/{x;G}' (instead of: sed '/foo/{x;G;}').)
+
+Wed Sep  9 18:17:07 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c(compile_regex): use regncomp() instead
+	of regcomp(), so that a script with NULs in its REs
+	will work in the expected manner.
+
+	* sed/compile.c(ADDNUL,REGNCOMP): added support macros
+	for above.
+
+	* lib/regex.c(regncomp,regcomp): added regncomp() and
+	made regcomp() a simple wrapper function.
+
+Mon Aug 31 21:48:30 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/sed.c(compile_program): if the first address of
+	a range is the number 0 (or a 0~N sequence), start
+	out in the "a1_matched" state.  This allows one
+	to match an initial chunk of a file without undue
+	convolutions for handling the case where the match
+	for the end of the sequence happens to be the first
+	line.
+
+Sun Aug 16 03:34:25 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c(snarf_char_class,match_slash): simplify
+	handling of "premature newline" error. Also, get the
+	line number right in the error message if we encounter
+	a "premature newline" during char-class snarfing.
+
+Sun Aug 16 02:59:20 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c: added N_() markers and corresponding gettext()
+	(er, _()) calls.
+
+	* Merged in i18n contribution from Erick Branderhorst
+	<Erick.Branderhorst@asml.nl>.  His ChangeLog entry
+	for the changes I've incorporated so far:
+
+1998-07-24  Erick Branderhorst  <Erick.Branderhorst@asml.nl>
+	* configure.in (ALL_LINGUAS, AM_GNU_GETTEXT): nl
+	* sed/{sed.h,utils.c}: #include <libintl.h> #define _(String)
+	gettext (String)
+	* sed/sed.c: #include <locale.h>
+	* po/POTFILES.in: sed/{compile,execute,sed,utils}.c
+	* run gettextize -f
+	* acconfig.h: #undef LOCALEDIR ENABLE_NLS HAVE_CATGETS
+	HAVE_GETTEXT HAVE_LC_MESSAGES HAVE_STPCPY
+
+Fri Aug 14 13:52:57 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* Merged code from 3.02 with a branched development
+	tree from late May; the following (out-of-order)
+	changelog entry is from the branched tree.
+
+Sat May 30 12:23:16 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c, sed/execute.c: added (conditional on NOLEAKS macro)
+	code to free all dynamically allocated memory.
+
+	* sed/sed.c, sed/compile.c, sed/execute.c: much shuffling
+	of code --- ordered functions such that no forward
+	declarations are necessary, and placed all static prototypes
+	immediately before the actual function definition.
+	This accomplished two things: first, I find the new ordering
+	a more natural way to read the code than the previous
+	ordering, and second, the new ordering give the compiler
+	a better opportunity to discover inlining possibilities.
+	(The odd "prototype declaration+old-style definition"
+	style is used because I feel it is the least ugly way
+	of supporting K&R1 C while still getting the benefit of
+	prototypes when they are available.)
+
+	* sed/basicdefs.h: added MEMCPY() macro to hide the VCAST()s
+	that ought to be used with memcpy().
+
+	* sed/execute.c: Change calls to memcpy() to go through the
+	new MEMCPY() macro.  Various prototypes: elide variable name
+	if it does not add any human-useful documentary information
+	to the bare type.
+
+	* sed/sed.c(main): Updated calls to compile_string() to add third
+	(length) argument.  Changed call to obsolete close_all_files()
+	to a call to the new finish_program().
+
+	* sed/sed.c(map_file): Attempt to clean-up how "size" gets
+	cast and tested; remove spurious S_ISREG test (just let
+	mmap() fail if it doesn't support the underlying file type).
+
+	* sed/sed.c: Deleted old RX library stub declarations.
+
+	* sed/sed.c(map_file,unmap_file): added VCAST()s to the
+	mmap()/munmap() calls.
+
+	* sed/utils.c(ck_fclose): added support for ANSI C
+	functionality where passing a NULL argument means
+	to fclose() _all_ open streams.  (Well, almost.
+	Only closes streams which were previously ck_fopen()ed,
+	as I don't care to figure out how to autoconf-detect
+	whether fclose(NULL) is properly supported on a given
+	platform.)
+
+	* sed/sed.h: Renamed `struct text_buf' member `text_len'
+	to `text_length'.  Abstracted out `enum addr_types'
+	from `struct addr'; added new enum types num2,step,step_mod;
+	renamed mod to num_mod.  De-unionized the regex,number,
+	{modulo-offset/step} components of `struct addr', in
+	anticipation of new features.  Changed type of `a2' member
+	of `struct sed_cmd': now a pointer to save space.
+	Abstracted out `struct replacement' from `struct subst'.
+	Cleaned up declaration of `x' union of `struct addr'.
+	Fixed prototype for compile_string().  Replaced prototype
+	for old close_all_files() with one for new finish_program().
+
+	* sed/sed.h, sed/compile.c, sed/execute.c: changed to
+	simplify the data structures used for branches and
+	command blocks: simplified `struct vector'; made
+	`struct label' local to compile.c; `struct sed_cmd'
+	was modified to support a simpler design for branches
+	and blocks.
+
+	* sed/execute.c: Conditionally added ADDNUL() macro so that
+	the function call overhead is only incurred if nul_append()
+	_must_ be called.  Made some commentary edits, including
+	typo fixes.
+	* sed/execute.c(resize_line): changed semantics of "len" argument
+	from "additional length" to "target length"; made
+	INITIAL_BUFFER_SIZE a minimum allocation length.
+	* sed/execute.c(str_append): adjusted to new resize_line()
+	semantics.
+	* sed/execute.c(line_copy): use FREE()+MALLOC() instead of
+	REALLOC() to avoid unnecessary copying of old text; add the
+	"try doubling first" allocation heuristic (just like
+	resize_line() does).
+	* sed/execute.c(line_exchange): new function.
+	* sed/execute.c(nul_append): make whole function (not just its
+	body) conditional on HAVE_REGNEXEC macro; adjust to new
+	resize_line() semantics.
+	* sed/execute.c(read_mem_line): use str_append() instead if
+	custom in-line code; compensate for new default of
+	"line.chomped = 0" in read_pattern_space() by setting
+	"line.chomped = 1" where appropriate.
+	* sed/execute.c(read_file_line): use different trigger to
+	determine that "buffer" is uninitialized, and do a full
+	initialization if required; use str_append() instead of custom
+	in-line code in two places; compensate for new default of
+	"line.chomped = 0" in read_pattern_space() by setting
+	"line.chomped = 1" where appropriate.
+	* sed/execute.c(output_line): don't bother calling ck_fwrite()
+	if length==0.
+	* sed/execute.c(release_append_queue): new function.
+	* sed/execute.c(dump_append_queue): use release_append_queue()
+	instead of in-line equivalent.
+	* sed/execute.c(read_pattern_space): conditionalize call to
+	dump_append_queue() for alleged performance reasons; changed
+	default "line.chomped" value to more common "1", and added an
+	assignment of "0" where this made a difference.
+	* sed/execute.c(match_an_address_p): deleted "is_addr2_p"
+	argument; reorder cases to match order in enum declaration; add
+	cases for new "addr_is_num2", "addr_is_step", and
+	"addr_is_step_mod" address types; alter nul_append() call to be
+	through ADDNUL() macro; fix to new struct member and enum
+	spellings in (formerly addr_is_mod); addr_is_num_mod case.
+	* sed/execute.c(match_address_p): remove oblsolete third argument
+	to calls to match_address_p(); alter references to sed_cmd
+	member a2 to reflect new pointer status; add new support for
+	a2->addr_type addr_is_step and addr_is_step_mod cases.
+	* sed/execute.c(do_subst): add NOLEAKS support logic; use
+	ADDNUL() wrapper to nul_append(); simplify replacement
+	expansion by using the new "struct replacement" data structure;
+	use line_exchange() function instead of custom in-line code.
+	* sed/execute.c(process_files): added NOLEAKS code.
+	* sed/execute.c(execute_program): updated implementations
+	of the `{', `}', `:', `b', and `t' commands; modified
+	`c' command gratuituosly; fixed potential memory
+	overrun in `D' command.  Simplified how nonstandard
+	`loop increments' work.  Use line_exchange() instead of
+	custom in-line code in 'x' case.
+	* sed/execute.c[EXPERIMENTAL_DASH_N_OPTIMIZATION conditional
+	code]: various modifications intended to keep this
+	code in sync with the new changes, but the code still
+	retains its previous bugs.
+
+	* sed/compile.c: use "exit(EXIT_FAILURE) instead of "exit(1)",
+	just in case we get compiled under VMS.
+	* sed/compile.c: Change type of prog_info.base to decrease needs
+	for casting; then elimiated the casts in question ;-).
+	* sed/compile.c: Added struct sed_label (moved from sed.h, then
+	modified).
+	* sed/compile.c: Removed "readit_p" flag from struct fp_list.
+	* sed/compile.c: Added module-global "blocks" variable.
+	* sed/compile.c: Extracted more error-message constant strings
+	to named variables.
+	* sed/compile.c(check_final_program): updated to
+	reflect new data structures and use new fucntions.
+	Added call to compile_regex() to release unneeded
+	memory.
+	* sed/compile.c: deleted obsolete new_vector() function;
+	abstracted new read_label() function; abstracted new
+	release_label() function; added new `blocks' module-static
+	variable.
+	* sed/compile.c(compile_program): updated implementations
+	of the `{', `}', `:', `b', and `t' commands; modified
+	initialization from NULL vector.
+	* sed/compile.c(compile_regex): added mechanism to
+	release memory consumed by the cached `last' RE.
+	* sed/compile.c(setup_jump,setup_label): updated
+	name (from setup_jump to setup_label) and prototype;
+	changed body to reflect data structure changes.
+	* sed/compile.c: Add OPEN_BRACE and CLOSE_BRACE macros for better
+	"vi" editing behavior.
+	* sed/compile.c(compile_filename,read_filename,get_writefile):
+	Replaced function compile_filename() with more orthogonal functions
+	read_filename(), get_writefile().
+	* sed/compile.c(compile_regex): Added ability to free the remembered
+	"last RE" in compile_regex (for benifit of "NOLEAKS" code).
+	* Made adjustments dictated by the change to struct sed_cmd which made
+	the a2 member a pointer-to-addr instead of an addr.
+	* sed/compile.c(setup_jump,read_label,setup_label,release_label):
+	Added functions read_label(), setup_label(), release_label(); deleted
+	function setup_jump().
+	* sed/compile.c(new_replacement,setup_replacement,release_replacement):
+	new functions.
+	* sed/compile.c: Adjusted to new spelling of text_buf member
+	("text_length" instead of "text_len").
+	* sed/compile.c(new_vector): deleted function.  (Due to new handling
+	of blocks, only one instance remained, and that one was just as
+	clear in-lined.)
+	* sed/compile.c(compile_string): Added third argument; it now
+	takes a counted string instead of a NUL-terminated string.
+	* sed/compile.c(compile_file): added variable "map_base" to
+	compensate for new type of prog_info.base.
+	* sed/compile.c(check_final_program): reflect new style of
+	handling blocks and struct sed_label.
+	* sed/compile.c(close_all_files,finish_program): replaced function
+	close_all_files() with more generic finish_program().
+	* sed/compile.c(read_text): added new feature: if first non-blank
+	character after the {a,i,c} command character is not "\", then
+	use the trailing text on that line as the (first) line of text.
+	Also added code conditional on NO_INPUT_INDENT to support the
+	"feature" of stripping leading blanks from each input line; I
+	do not read POSIX as permitting this behavior, nor do I think
+	it is a good idea, so it is disabled by default, but some have
+	argued that this blank-stripping is the "correct" behavior, so
+	I offer them the option of building their sed that way.
+	* sed/compile.c(compile_address): added xxx,+n and xxx,~n addressing;
+	simplified code.
+	* sed/compile.c(compile_program): added BAD_PLUS error detection;
+	adjusted to new cur_cmd->a2 pointer status; added addr_is_num2
+	detection; deleted pointless "a2->addr_number < a1.addr_number"
+	check (addr_is_num2 semantics handle this just fine); updated
+	code for '{', '}', ':', 'b', and 't' to reflect new design
+	of branch handling, including making use of new functions
+	related to the new design); added support for feature already
+	mentioned in read_text() where {a,i,c} commands are able to have
+	their text start on the same line as the command; changed some
+	error messages (hopefully for the better); localized variables
+	specific to individual commands (particularly 's' and 'y');
+	made use of new setup_replacement() function in 's' command.
+
+Mon Aug 10 19:58:49 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* doc/sed.texi, doc/sed.1: sedtut10.txt is apparently dead.
+	Deleted references to it and added a pointer to
+	http://seders.icheme.org/tutorials/.  (Pointed out by
+	Joerg Heitkoetter <joerg@de.uu.net>.)
+
+Sat Aug  8 18:11:57 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* djgpp/config.btm: per request by Michel de Ruiter
+	 <mdruiter@cs.vu.nl>, added "%1" to "%9" parameters.
+
+Mon Aug  3 11:44:55 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* doc/sed.texi: fix a couple of typos.  (Submitted by
+	Alan Modra <alan@spri.levels.unisa.edu.au>.)
+
+Sat Aug 01 17:49:06 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.02 released
+	
+	* configure.in: Because of code change in 3.01a, bump the
+	minor revision number for the release (now 3.02).
+
+Sun Jul 26 16:07:55 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01a released
+	
+	* sed/compile.c(snarf_char_class):  the POSIX char-class
+	recognition loop forgot to update its concept of "prev"
+	as the loop progressed.
+
+	* testsuite/Makefile.am: The dependency of version.good
+	on [testsuite/]Makefile introduced in the previous
+	release was botched -- it referred to "Makefile"
+	as "$(srcdir)/Makefile, which of course doesn't work
+	if you aren't building in the source tree.
+
+	* djgpp/Makefile.am: add forgotten "config.btm" EXTRA_DIST
+	member.
+
+	* configure.in: update version.
+
+Tue Jul 21 06:04:42 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01 released
+	
+	* configure.in: mark as release version!
+
+	* Makefile.am: add BUGS and THANKS to the EXTRA_DIST target.
+
+	* testsuite/Makefile.am: add dependency of version.good
+	on [testsuite/]Makefile.
+
+Mon Jul 20 12:38:10 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* djgpp/config.btm: New file to support the 4DOS alternative
+	to command.com.  (Sumitted by Eli Zaretskii on behalf of
+	an anonymous 4DOS user.)
+
+Fri Jul 17 00:36:34 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta18 released
+	
+	* djgpp/config.sed: my "tweak" in beta17 was too
+	hastily considered.  Back it out.
+
+	* configure.in: update to beta18.
+
+Wed Jul 15 01:02:15 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta17 released
+	
+        * djgpp/config.sed: tweak/simplify s,,, commands at end.
+
+	* configure.in: update to beta17.
+
+1998-07-14  Eli Zaretskii  <eliz@is.elta.co.il>
+
+	* djgpp/config.sed: Edit all the occurences of = in the context of
+	--option=value, including in the help messages, into
+	--option:value, but leave DOS-style d:/foo/bar file names intact.
+
+	* djgpp/config.bat: Use --srcdir:foo instead of --srcdir=foo.
+
+	* testsuite/Makefile.am (help, version): Remove temporary files
+	explicitly, don't use shell wildcards, so it works under DOS 8+3
+	limits.
+
+Thu Jul  9 13:06:00 PDT 1998 16:51:43 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta16 released
+	
+	* djgpp/config.sed: tweak the configure script to use :
+	instead of = for --with-foo=bar option parsing, to
+	work around problems with how command.com handles =s.
+
+Wed Jul  8 16:51:43 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* djgpp/config.bat: correct inappropriate behavior that I
+	introduced in the beta13 changes (if first argument is
+	a directory, it needs to be handled as the --srcdir).
+
+	* testsuite/version.gin, testsuite/version.good, testsuite/Makefile.am:
+	Add target to automake to automatically update version.good
+	from (new file) version.gin, instead of hand-editing the version
+	number each release.
+
+	* testsuite/Makefile.am: miscellaneous gratuitious tweakage --
+	mainly adding $(RM) commands just because I didn't like
+	leaving the tmp* files from successful runs laying about.
+	Also some editorial comments.
+
+	* configure.in: update to beta16.  Added and commented out
+	experiment with AC_OUTPUT() for testsuite/version.good.
+	Added code to properly handle bare (without =xxx)
+	"--with-regex" option.
+
+Sun Jul  5 21:02:16 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta15 released
+	
+	* sed/utils.c(ck_fflush), sed/utils.h, sed/execute.c(output_line):
+	add and use new ck_fflush() function.
+
+Sun Jul  5 15:23:47 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c(bad_prog): add more detail to error
+	messages about -e strings.
+
+Sun Jul  5 14:29:45 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c(mark_subst_opts), sed/execute.c(do_subst):
+	Define better semantics for interaction of the `g' flag
+	with a numeric flag to the s/// command.  It used to
+	be that the `g' command siezed control; now the first
+	(number-1) matches are skipped and then `g' gets control
+	after that.  (It is not clear whether this is a feature
+	sneaking in during late beta, or a bug fix; the changes
+	involved were trivial, so I decided to treat it as a bug
+	fix.)
+
+	* configure.in, testsuite/version.good: update to beta15.
+
+Sat Jul  4 09:54:45 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta14 released
+	
+	* sed/basicdefs.h, sed/compile.c, sed/execute.c:
+	per report by "Kaveh R. Ghazi" <ghazi@caip.rutgers.edu>,
+	copied the ISXXX macros from lib/regex.c so that
+	silly machines which require isascii() to be true
+	before the other isXXX() macros are valid will
+	still work.
+
+	* configure.in, testsuite/version.good: update to beta14.
+
+Thu Jul  2 23:46:13 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta13 released
+	
+	* configure.in, acconfig.h: set USE_REGEX_GNU_H symbol if we
+	are going to be using lib/regex.c.
+
+	* lib/Makefile.am, lib/regex.h, lib/regex-gnu.h, lib/regex.c:
+	rename lib/regex.h to lib/regex-gnu.h, so that those who
+	choose to use a different regex implementation will not
+	pick-up lib/regex.h when doing "#include <regex.h>".
+
+	* sed/regex-sed.h, sed/Makefile.am, sed/compile.c, sed/execute.c,
+	sed/sed.c: create sed/regex-sed.h which acts as a switch
+	to choose either lib/regex.h or the user-supplied <regex.h>,
+	depending on the value passed to configure's --with-regex=
+	option.
+
+Thu Jul  2 17:22:31 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* configure.in: if an alternative --with-regex= is given,
+	do an AC_CHECK_FUNCS(regnexec regexec) to ensure that
+	at least one of these functions is available.  Also,
+	parallel changes for the default case.
+
+	* sed/execute.c, acconfig.h: retire use of the WITH_REGNEXEC
+	test macro in favor of HAVE_REGNEXEC test macro created
+	by above change.
+
+	* djgpp/config.bat: Play games to handle "install-sh",
+	DOS filename restrictions, GNU makefile default rules,
+	and getting a correct run of "configure" (contributed
+	by Eli Zaretskii <eliz@is.elta.co.il>).
+
+	* djgpp/Makefile.am, testsuite/Makefile.am, testsuite/Makefile.in,
+	Makefile.am, configure.in: Various automake targets
+	(such as distcheck) failed with old configuration.
+	The simplest solution was to just add these .am
+	files.  (The testsuite/Makefile.in was just renamed to
+	testsuite/Makefile.am, then various redundant defines and
+	targets were deleted.)  (Reported by Erick Branderhorst
+	<Erick.Branderhorst@asml.nl>.)
+
+	* testsuite/dc.good, testsuite/dc.inp: per suggestion from
+	Greg Ubben <gsu@romulus.ncsc.mil>, use base 16 output to
+	exercise even more of the dc.sed script.
+
+	* configure.in, testsuite/version.good: update to beta13.
+
+Sun Jun 28 16:21:02 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta12 released
+	
+	* doc/sed.texi: Avoid mixing @code and @samp markups together:
+	they look ugly in Info.  Use @url and @email instead of @example.
+	Add indexes.  (Basis of changes contributed by Eli Zaretskii.)
+
+	* djgpp/*, Makefile.am: add support for the DJGPP compiler,
+	contributed by Eli Zaretskii <eliz@is.elta.co.il>.
+
+	* dc.sed, testsuite/Makefile.in, testsuite/dc.inp, testsuite/dc.good:
+	added this remarkable script, written and contributed
+	by Greg Ubben <gsu@romulus.ncsc.mil>, both as a work of
+	art for general admiration, and also for use in regression
+	testing.
+
+	* configure.in, lib/Makefile.am: add --with-regex=regexlib
+	option, which overrides the use of lib/regex.c.
+
+	* configure.in, testsuite/version.good: update to beta12.
+
+Fri Jun 12 16:41:48 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta11 released
+	
+	* sed/compile.c: add module-static variables first_script
+	(for #n change below) and pending_text (for a/c/i change
+	below).
+
+	* sed/compile.c(compile_file), sed/compile.c(compile_program):
+	Instead of having #n trigger the -n option in *any file*,
+	have #n trigger the -n option only if they are the first
+	two bytes of the first script or script-file.
+
+	* sed/compile.c(compile_string), sed/compile.c(compile_file):
+	clear the first_script variable at end of these functions.
+
+	* sed/sed.h: tease out the struct text_buf declaration from
+	struct sed_cmd, so that a pointer to such can be passed
+	to new sed/compile.c(read_text) function.
+
+	* sed/compile.c(compile_program), sed/compile.c(read_text):
+	Tease out handling of text to a/c/i commands to new
+	read_text() function.  Handle (via aid of pending_text
+	variable) texts which span more than one script/script-file
+	option.  In particular, restore the ability to have this
+	work:  sed -e '1i\' -e 'foo'
+
+	* sed/compile.c(check_final_program): close off any dangling
+	pending_text allocation.
+
+Thu Jun 11 11:17:46 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/execute.c(do_subst): fixed two bugs: s/ */X/g was failing
+	to match the final empty string after the end of the pattern
+	space; and /^foo$/s/o/x/3p was printing, despite the failure
+	to do a substition.
+
+Fri Jun  5 04:40:24 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* configure.in: change the AC_ARG_WITH(regnexec, ...)
+	to be the more appropriate AC_ARG_ENABLE(regnexec, ...).
+
+	* configure.in, testsuite/version.good: update to beta11.
+
+Fri Jun  5 00:54:25 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta10 released
+	
+	* sed/execute.c: forgot to P_() the prototype and
+	old-style the declaration for bootstrap_memchr()!
+
+Thu Jun  4 18:42:30 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c(snarf_char_class): added code to
+	recognize \n or \<newline> sequence within a
+	char-class as the newline character.
+
+Tue Jun  2 11:56:02 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* configure.in: added check for <sys/types.h> and
+	a AC_ARG_WITH(regnexec,...) check, to simplify use
+	of other regex libraries which have regexec() but
+	not regnexec(), with the corresponding loss of
+	functionality (regexps will not work right against
+	input lines which contain NULs).
+
+	* sed/execute.c: add nul_append() function, a #define
+	for a regnexec() -> regexec() macro (conditional on
+	the lack of the WITH_REGNEXEC symbol), and a couple
+	of calls to nul_append() (in match_an_address_p()
+	and do_subst()) to permit the use of the POSIX standard
+	regexec() function call instead of the suggested
+	regnexec() call.
+
+	* sed/compile.c, sed/execute.c, sed/sed.c: check for
+	<sys/types.h> and include it (before "regex.h") if
+	available.  This makes it simpler to use the system's
+	regex library instead of the one in lib/regex.c, should
+	that be desired.
+
+Tue Jun  2 08:41:05 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/basicdefs.h: define VCAST macros to allow sed to
+	compile on systems which predate the definition
+	of "void *", and yet still get feedback about
+	stupid programming errors from systems which *do*
+	know about "void *"s.  Also define MALLOC, REALLOC,
+	MEMDUP, and FREE macros to keep under control the
+	degree of code ugliness which would otherwise be
+	introduced in making use of the VCAST macro.
+
+	* sed/compile.c, sed/execute.c, sed/sed.c, sed/utils.c:
+	pervasively use the new VCAST, MALLOC, REALLOC, MEMDUP,
+	and FREE macros wherever appropriate.
+
+	* sed/utils.c, sed/utils.h: correct type of first arguments
+	to ck_fread() and ck_fwrite() to be [const] VOID *.
+
+	* sed/basicdefs.h, sed/execute.c: protect against
+	the rumored systems which stupidly #define __STDC__ 0.
+
+	* testsuite/help.good, testsuite/Makefile.in: make
+	the ``help'' test insensitive to the spelling of
+	the executable's name.  Also, enhanced `make clean'
+	target.
+
+	* doc/sed.texi, doc/sed.1: correct documentation of `q'
+	command; fix typos.
+
+	* configure, testsuite/version.good: update to beta10.
+
+Sat May 30 17:28:00 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta9 released
+	
+	* Makefile.am: make testsuite a normal SUBDIR.
+
+	* configure.in: discontinue using AC_ISC_POSIX --
+	check for -lcposix library instead; added
+	testsuite/Makefile to AC_OUTPUT list.
+
+	* lib/memmove.c(memmove): fixed wrong sense used
+	for HAVE_BCOPY test.
+
+	* sed/execute.c: checked more specifically for a version
+	of gcc which supports __attribute__ (i.e., >= 2.7).
+
+	* testsuite/*: renamed files to fit 14 char limit.
+
+	* testsuite/Makefile, testsuite/Makefile.in: Makefile
+	renamed to Makefile.in and then modified so that
+	"make -j check" from top directory will work.
+
+	* testsuite/subwrite.sed, testsuite/writeout.sed: changed
+	file name of the "w" command to be consistent with the
+	new naming used in testsuite/Makefile.in.
+
+	* doc/sed.1, doc/sed.texi: fixed some typos, formatting
+	glitches, and poor wordings.
+
+Sat May 30 04:02:29 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* configure.in: specify that config.h is to be derived
+	from config_h.in in order to avoid the braindead
+	DOS filesystem limitations.
+
+Fri May 29 21:56:30 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c(compile_address), doc/sed.texi: gave
+	a better definition to the meaning of N~0 address
+	forms -- N~M addresses now mean that lines match
+	when there exists a non-negative x such that
+	lineno == N+x*M.
+
+Fri May 29 12:07:38 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c(compile_address),
+	sed/execute.c(match_an_address_p): update semantics of
+	N~M address form: now N is the first line which will
+	match and M is the step between succeeding matches.
+	If N<M this works out to the same as before, but the
+	new behavior for N>=M seems more useful.
+
+	* doc/sed.1, doc/sed.texi: update documentation of N~M
+	address form; added "Other Resources" node to sed.texi;
+	minor formatting changes to some items in sed.1 with
+	an eye to improving clarity.
+
+	* configure.in, testsuite/version.good: update to beta9.
+
+Sat May 23 20:04:31 HST 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta8 released
+	
+	* sed/compile.c(compile_regex): forgot to make last_re be
+	a *copy* of the buffered text in today's earlier fix.
+
+	* sed/execute.c(read_file_line): EOF check was wrong --
+	it forgot to allow for the possibility that we were
+	appending to the end of the ``line'' (instead of merely
+	reading a fresh line).
+
+Sat May 23 18:07:18 HST 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c(compile_regex): don't track compiled version
+	of regex -- the modifiers may change.  Track the regex
+	source instead.  (For "last regex" (aka //) notation.)
+
+	* configure.in, testsuite/version.good: update to beta8.
+
+Sat May 23 16:07:09 HST 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta7 released
+	
+	* sed/execute.c: #undef'd EXPERIMENTAL_DASH_N_OPTIMIZATION
+	because its code is buggy.
+
+Tue May 19 17:03:52 HST 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/sed.c: label rx library code as such with #ifdefs
+	(instead of just #if 0).
+
+	* sed/compile.c(compile_program): make incremental
+	improvement to the "Unknown command" error message.
+
+Sat May 16 23:16:26 HST 1998  Ken Pizzini <ken@gnu.org>
+
+	* testsuite/Makefile: simplify: get rid of automatic run
+	against system's sed; don't time by default; allow for
+	alternative comparison command.
+
+	* configure.in, testsuite/version.good: update to beta7.
+
+Wed May 13 21:44:28 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta6 released
+	
+	* lib/Makefile.am: fix spelling of libsed_a_LIBADD in
+	libsed_a_DEPENDENCIES.
+
+	* configure.in, testsuite/version.good: update to beta6.
+
+Wed May 13 14:38:08 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta5 released
+	
+	* sed/execute.c(do_subst): added not_bol_p variable to track when
+	we have iterated past the beginning of the pattern.
+	[Thanks to Jim Meyering <meyering@ascend.com> for the bug report.]
+
+Wed May 13 13:54:04 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/execute.c(bootstrap_memchr): new function.  When
+	bootstrapping we don't know if we are on a 64-bit machine,
+	so lib/memchr.c breaks.  Supply this (slow) implementation
+	just to get us bootstrapped.
+
+	* bootstrap.sh: add a #define BOOTSTRAP symbol; add -I.
+	for emphasis for the compiles in sed/; be explicit
+	about what files we're bothering to compile.
+
+	* configure.in, testsuite/version.good: update version
+	to beta5.
+
+Wed May 13 06:39:06 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta4 released
+	
+	* rename writeout.good? to wrtout?.good and subwrite.good? to
+	subwrt?.good to comply with DOS 8+3 file name restrictions.
+	[Eli Zaretskii <eliz@is.elta.co.il> suggested this to
+	simplify DJGPP ports, and it was easy.]
+
+	* testsuite/Makefile: reflect above name changes.
+
+Wed May 12 21:09:32 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/sed.c(usage): fix non-portable omission of \n\ at end of
+	lines within long string.
+
+	* sed/sed.c(main): remove spurious argument to fprintf() in the
+	'V'ersion output.
+
+	* sed/execute.c(line_append): embed newline between the two
+	text fragments unconditionally.
+
+	* sed/execute.c(do_subst): change structure assignment to memcpy()
+	(for portability reasons).
+
+	* README.bootstrap: suggest using -w option.
+
+Tue May 12 10:02:37 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* configure.in: use AC_REPLACE_FUNCS where appropriate.
+
+	* lib/Makefile.am: updated to reflect AC_REPLACE_FUNCS change in
+	configure.in.
+
+	* lib/memchr.c lib/memcmp.c: revert to standard GNU versions.
+
+	* lib/alloca.c: added this missing file.
+
+	* testsuite/version.good: updated for new version identifier.
+
+Mon May 11 18:50:56 PDT 1998  Ken Pizzini <ken@gnu.org>
+	
+	*** Version 3.01-beta3 released
+	
+	* sed/Makefile.am: fix INCLUDES to work right with VPATH.
+	[Thanks to Jim Meyering <meyering@ascend.com> for the bug report.]
+
+	* sed/sed.c(usage): make --help output more user-friendly?
+
+	* sed/execute.c(execute_program): fix bug in 'x' command introduced
+	in the alleged portability fix of May 9.
+
+	* configure.in: update version to 3.01-beta3.
+
+	* testsuite/version.good, testsuite/help.good: freshen with
+	latest output.
+
+Sat May  9 22:35:45 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta2 released
+	
+	* sed/sed.c: add #include <sys/types.h> in HAVE_MMAP
+	block (needed on some machines).
+
+	* lib/memmove.c: #include <memory.h>, if HAVE_MEMORY_H.
+
+Sat May  9 21:29:00 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* configure.in: remove dangling references to rx library;
+	added HEADER and FUNC checks for items used by source in
+	lib/.
+
+	* lib/ansidecl.h, lib/memcopy.h, lib/pagecopy.h, lib/string.h
+	lib/memcpy.c, lib/memmove.c: deletes these files.  There
+	are still pieces of glibc missing to support these, and
+	it isn't worth the headache right now.
+
+	* lib/memmove.c: de novo, simpler version.  Uses bcopy()
+	if available, and slow-but-simple code if not.
+
+	* lib/Makefile.am: remove references to deleted files.
+	Added forgotten reference to memcpy.c.  Re-ordered
+	SOURCE entries to reflect dependencies for systems
+	which lack ranlib.
+
+	* sed/basicdefs.h: updated to reflect above changes to lib/,
+	and experience with non-STDC compilers.
+
+	* lib/regex.c: made regerror() function publicly visible.
+
+	* lib/strerror.c: use old-style function declaration.
+
+	* sed/compile.c, sed/execute.c, sed/sed.c, sed/utils.c,
+	sed/sed.h, sed/utils.h: ensure that private definitions of
+	some symbols do not cause problems when #include'ing system
+	headers (mainly by re-ordering the #include directives).
+	(This is particularly an issue for bootstrap.sh runs.)
+
+	* sed/execute.c (execute_program): use memcpy() instead of
+	structure assingment ('x' command), for portablility to
+	old compilers.
+
+	* sed/execute.c (slow_getline): use old-style function
+	declaration, with a P_ prototype.
+
+	* sed/sed.c: change the type of the fallback MAP_FAILED
+	definition to work on archaic systems.  (Modern systems
+	should be defining it themselves, so the change from
+	void * shouldn't be a problem.)
+
+	* bootstrap.sh, README.bootstrap: actual testing of bootstrap
+	code revealed that I was too optimistic.  Redesigned and
+	replaced implementation.
+
+	* testsuite/Makefile: ignore errors from reference-implementation
+	seds that aren't up to snuff.
+
+	* testsuite/help.good, testsuite/version.good: update to
+	current version's output.
+
+Fri May  8 15:08:28 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	*** Version 3.01-beta1 released
+	
+	* sed/sed.c (main, usage): once again tweak the --help and
+	--version output to bettery comply with GNU coding standards.
+
+	* testsuite/help.good, testsuite/version.good: update to
+	reflect above change.
+
+	* doc/sed.texi: fix "Invoking" node's spelling to comply
+	with GNU standards.
+
+Fri May  8 11:43:10 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* doc/sed.1, doc/Makefile.am: wrote (very basic) man page.
+
+Thu May  7 20:40:21 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* lib/Makefile.am, lib/memmove.c, lib/memchr.c, lib/regex.c,
+	lib/memcpy.c, lib/regex.h, lib/memcopy.h, lib/string.h,
+	lib/pagecopy.h, lib/ansidecl.h: grab yet-another-version
+	from gnu.org for baseline and/or edit copyright boilerplate
+	using official lgpl2gpl.sed script.  Take care not to
+	loose regnexec() interface or special conditional-compilation
+	code.
+
+Wed May  6 23:35:12 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* lib/regex.c, lib/regex.h: take from grep-2.1 distribution,
+	then trivially added the regnexec() interface.
+
+	* sed/sed.c, sed/compile.c, sed/execute.c: made modifications
+	to work with regex instead of rx.
+
+	* rx/*: deleted directory; the code is just too slow.
+	I think it will be easier to extend regex to fully
+	support POSIX.2 than to tune rx to be reasonable.
+	Even if this supposition is wrong, I'd rather make
+	the 3.01 release with the slightly deficient regex.
+
+	* Makefile.am lib/Makefile.am, sed/Makefile.am: made changes
+	related to the substitution of regex for rx.
+
+	* lib/Makefile.am, sed/Makefile.am: since regex is not a
+	``compatability'' module, changed name of library to
+	``libsed.a''.
+
+	* lib/memchr.c, lib/memcpy.c, lib/memmove.c: add conditional
+	compilation code to leave zero-sized .o file if system
+	already supports the implemented function.
+
+	* testsuite/help.good, testsuite/version.good: brought
+	up-to-date (once again).
+
+	* NEWS, ANNOUNCE: changes to reflect this batch of changes.
+
+Wed May  6 18:40:47 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/execute.c: discovered awful bug in '}' handling:
+	it could read past the end of vec (because `n' was
+	being decremented below zero)!  Needed to "continue"
+	instead of "break".
+
+Tue May  5 14:34:38 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* doc/sed.texi, doc/version.texi: wrote some rudimentary
+	texinfo documentation.
+
+	* ANNOUNCE, NEWS, README, README.rx, Makefile.am:
+	more updates for the upcoming beta-release.
+
+	* sed/compile.c, sed/execute.c, sed/sed.c, sed/utils.c,
+	sed/sed.h, lib/strerror.c: update copyright notice text.
+
+Fri May  1 15:41:37 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/execute.c (match_an_address_p, match_address_p): if
+	the second element of an address range is a line number,
+	and that line number is *less than* (or equal to) the
+	current line number, we only match the one line (per
+	POSIX.2, section 4.55.7.1).  [Bug discovered as reported
+	in the seders mailing list FAQ.]
+
+	* AUTHORS, NEWS, acconfig.h, configure.in, doc/Makefile.am,
+	lib/Makefile.am, sed/Makefile.am, lib/README,
+	testsuite/help.good, testsuite/version.good:
+	Updated in anticipation of the 3.01-beta1 release.
+	Reorganized development source tree to make creation
+	of a distribution simpler.  Most notable changes were
+	to the various Makefile.am files and configure.in, but
+	some minor edits (such as deleting or changing #include
+	directives) have been made in many other source files.
+
+	* bootstrap.sh, README.bootstrap: created a mechanism for
+	creating sed on a system which lacks a working sed.
+
+Thu Apr 16 23:52:11 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed.h, sed.c, execute.c, compile.c: did a spell-check on
+	the comments; fixed several typos.
+
+Thu Apr 16 13:43:01 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* execute.c (do_subst): fixed bug where the "replaced" flag
+	was being set to one inappropriately when at least one
+	but fewer than sub->numb matches of the regexp were found.
+	(Thanks to Simon Taylor <staylor@hermes.iaccess.com.au>
+	for the bug report.)
+
+Wed Apr 15 11:35:31 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed.h, sed.c, compile.c, execute.c: having a concern that
+	a cast was being done inappropriately, and realizing that
+	there is no quick way to locate all casts in a program, I
+	went through and marked all casts with a simple macro.
+	Now it is a simple matter to locate the casts, and it is
+	also a simple matter to turn of casts for a lint session
+	(if it should be desired).
+
+Wed Apr 15 10:29:21 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* compile.c, sed.c: redo compile phase so that brace
+	expressions can be spread across multiple files.
+	For example:
+	  printf '{' >a; printf 'l;d' >b; printf '}' >c
+	  sed -f a -f b -f c foo
+	will now compile (and work), instead of complaining
+	about an unmatched '{'.  The mess created in compile.c
+	allowed a little simplification to the command-line
+	processing of "-e" options in sed.c.
+
+	sed.h: added (opaque) err_info member to struct vector;
+	added comments to the members of struct vector.
+
+Wed Apr 14 23:50:50 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed.h, sed.c, compile.c, execute.c: added types countT and
+	flagT in order to clarify what various "int"s were doing.
+	Also makes it easy to change the type used for counts
+	(for example, to "unsigned long long") if desired, although
+	there are still some gotchas (such as the printf() format
+	for the '=' command).
+
+Tue Apr 14 17:34:54 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* execute.c (execute_program, process_files, count_branches,
+	shrink_program): Added a first attempt at program optimization.
+	We now can quit early if we are running with the "-n"
+	and all of the commands are known to be valid only for
+	lines less than the current line.  Thus the "sed" in
+	"foo | sed -n 1,2p" will print read three lines, printint
+	the first two, and then quit, regardless of how much longer
+	"foo" might run or output.  This optimization does not buy
+	much in most cases (it sometimes even costs a little),
+	but when it does help it can help big.  The code is
+	all conditionally compiled based on the
+	EXPERIMENTAL_DASH_N_OPTIMIZATION symbol being #defined,
+	so it can be easily omitted if it causes problems.
+
+Tue Apr 14 12:25:06 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* execute.c (test_dollar_EOF, last_file_with_data_p):
+	test_dollar_EOF() was incorrectly returning a false (0)
+	when there were unprocessed files, none of which had any
+	data (either unopenable or zero-length).  Created
+	last_file_with_data_p() to detect this situation, and
+	modified test_dollar_EOF() to make use of it.
+
+Thu Apr  2 23:02:18 PST 1998  Ken Pizzini <ken@gnu.org>
+
+	* compile.c (match_slash): match_slash() did not handle
+	[.coll.], [=equiv=], and [:class:] sequences within a
+	character class.  Added snarf_char_class() [which is a
+	remote derivative of parse_char_class() from GNU ed-0.2]
+	to deal with the details, and altered match_slash()
+	to make use of it.  Also created the trivial
+	add_then_next() to avoid clutter in snarf_char_class().
+
+Thu Apr  2 20:34:42 PST 1998  Ken Pizzini <ken@gnu.org>
+
+	* execute.c, sed.c, sed.h: There was a severe bug in
+	how the code handled "sed 5n a b" when "a" consists
+	of exactly five lines -- it behaved like "sed 5q a b"!
+
+	Rearranged where files get opened -- large scale
+	changes primarily involving main(), process_files(),
+	and read_pattern_space(), but also touching on several
+	other parts of execute.c.  The read_pattern_space()
+	function became unwieldly and parts were split into
+	open_next_file(), closedown(), read_always_fail(),
+	read_mem_line(), and read_file_line().  The
+	at_end_of_file_p() function became obsolete and was
+	eliminated; test_dollar_EOF_p() was updated.  A few
+	global and module-static variables were elminated, and
+	"struct line" was extended; comments were added to the
+	"struct line" declartation to document some important
+	dependencies in it.
+
+	I undertook the reorganization with dread, but I
+	feel that the new organization is an improvement
+	well beyond just fixing the bug that inspired it.
+
+Thu Apr  2 01:16:25 PST 1998  Ken Pizzini <ken@gnu.org>
+
+	* execute.c (read_file_line, slow_getline): the fread()
+	buffering code gives insufficient feedback to a user
+	running sed with a tty input device, so I created
+	slow_getline() for reading from a tty device.
+	Additionally, EOF detection has been made a little more
+	sensitive to avoid requiring multiple EOFs to be entered
+	from a tty.
+
+	* configure.in: added isatty() check.
+
+Wed Apr  1 11:04:30 PST 1998  Ken Pizzini <ken@gnu.org>
+
+	* configure.in (CPPFLAGS, LDFLAGS, LIBS):
+	Set to appropriate values if large file support needs
+	explicit enabling.  Code fragment taken from a 1997-10-25
+	patch to gawk by Paul Eggert <eggert@twinsun.com>
+
+Thu Aug 14 17:43:27 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* utils.c (ck_fclose): modified to ignore NULL parameter.
+
+Thu Aug 14 12:08:45 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* execute.c: tweaked execute_program() to eliminate
+	gratuitous "goto" usage.
+
+Thu Aug 14 11:30:04 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* compile.c: added case-insensitive modifier ('I') to
+	address and s/// regexps.  The s/// case also accepts
+	the more popular 'i' modifier.  (The address regexp
+	cannot use 'i' as a modifier, as that conflicts with
+	the use of the 'i'nsert command.)
+
+Thu Aug 14 09:29:06 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* compile.c: abstracted out match_slash() from the s///, y///,
+	and address-regexp special-case codes.
+
+	* execute.c: made dump_append_queue() use ck_fread() instead
+	of hand-rolled error checking.
+
+Mon Jul 28 10:50:41 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* sed.c, sed.h, execute.c: POSIX.2, section 4.55.7, says that
+	a newline must end *every* output line.  But I think that
+	it is useful (when seding a binary file) to omit a trailing
+	newline if the input lacks one.  Thus the addition of
+	POSIXLY_CORRECT behavior.
+
+	* execute.c: however, when seding multiple files my feeling
+	is that it makes sense to have each file but the last
+	behave as-if it ended in a newline.  Modified read_pattern_space()
+	accordingly.
+
+	* utils.c: realized that add1_buffer(), for performance reasons,
+	shouldn't be calling memcpy() (indirectly via add_buffer()),
+	so rewrote it.
+
+Sat Jul 26 23:08:28 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* execute.c: attempted to make read_pattern_space more
+	efficient for the the non-mmap() case.
+
+	* utils.c, utils.h, execute.c: new function ck_fread()
+	created and used.
+
+Sat Jul 26 20:22:14 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* execute.c, compile.c, sed.c: abstracted the mmap()
+	interface into map_file()/unmap_file() [sed.c], and
+	changed the ad-hoc code in compile_file() [compile.c]
+	and process_file() [execute.c] to make use of the new
+	interface.
+
+Sat Jul 26 19:45:46 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* execute.c, compile.c, configure.in: Check to see if mmap()
+	is available; if so make use of it on regular files.
+
+	* compile.c: compile_file() now closes the input file
+	when it is through!
+
+Sun Jul 20 23:57:02 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* compile.c: modified parsing to permit whitespace in more
+	places where it makes sense;
+	added backslash escaping to the y/// command, per POSIX.
+
+	* execute.c: Merged append_pattern_space() into read_pattern_space();
+	moved body of 's' command to new function do_subst();
+	moved body of 'l' command to new function do_list();
+	changed output of 'l' command to conform to POSIX.2;
+	made line handling conform to POSIX; added output_line() function;
+	redesigned append-space algorithm; added append_queue structure and
+	the next_append_slot() and dump_append_queue() functions.
+
+	* sed.h: moved the definition of what is now struct subst
+	outside of the definition of struct sed_cmd.
+
+Sat Jul 19 16:29:09 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* sed.c, execute.c, sed.h, Makefile.am: Separated out the
+	pieces dealing with executing the program from the top-level
+	parameter parsing and control.
+
+Sat Jul 19 01:16:35 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* sed.c, compile.c, sed.h, Makefile.am: separate out the
+	pieces dealing with compiling the program from the pieces
+	dealing with interpreting the result.
+
+	* compile.c: add functions in_nonblank() and in_integer(),
+	and change interface to compile_address() with an eye
+	to making code clearer.
+
+Fri Jul 18 13:35:50 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* utils.c: attempt at a quasi-unification of the
+	STDC and traditional C approaches to panic().
+
+	* sed.c: eliminate some gratuitous bit twiddling.
+	(Using flag bits can be a useful technique, but
+	this code is cleaner without them.)
+
+	* sed.c: place mutually exclusive members of struct addr
+	within a union, mainly to document the exclusivity;
+	eliminate unused structure members from struct fp_list;
+	eliminate unnecessary module-global variables;
+	remove some #if 0 code that is too odd to keep;
+	allegedly simplified the 'l' case of execute_program();
+	allegedly simplified inchar();
+	localized some static variables;
+	renamed some variables to better document their purpose;
+	removed some goto-s rendered obsolete by other changes.
+
+Thu Jul 17 15:30:44 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* utils.c, utils.h, sed.c: added and made use of
+	ck_free() function.
+
+	* utils.c, utils.h, sed.c: changed all the *_buffer()
+	functions to take/return an incomplete type
+	"struct buffer *" instead of using VOID *.
+
+	* utils.c, utils.h, sed.c: renamed "finish_buffer()"
+	to "free_buffer()", on the premise that the new
+	name better describes the function's purpose.
+
+Wed Jul 16 13:52:14 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* utils.c, utils.h, sed.c: added and made use of
+	ck_memdup() function.
+
+	* sed.c: protected a call to add1_buffer() in
+	compile_program() which could have tried to
+	push an EOF if a a/i/c command ended with
+	a '\', EOF sequence.
+
+	* utils.c: added sanity check to add1_buffer() so that
+	EOF will not be added to the buffer.
+
+Wed Jul 16 03:56:26 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* configure.in, compat.h, compat.c: added memchr.
+
+	* sed.c: got rid of arbitrary NUM_FPS limit;
+	made global functions and variables "static" where appropriate;
+	make various cosmetic changes, hopefully improving readability;
+	simplified some redundant predicates;
+	simplified some code, but nothing fundamental (yet?).
+
+Wed Jul 16 00:24:54 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* alloca.c, getopt.c, getopt.h, getopt1.c: updated from
+	versions in textutils-1.22.
+
+	* Makefile.in, Makefile.am, configure.in: put in automake support.
+
+	* basicdefs.h, compat.h, compat.c [, sed.c, utils.c]: took out
+	some very ugly compatibility #ifdefs and packaged into one
+	place.
+
+	* sed.c, utils.c: some gratuitous formatting changes.
+
+	* utils.c: changed datatype of utils_id_s in order to
+	eliminate arbitrary array size.
+
+Sun Jul 13 17:00:26 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* sed.c, utils.c, utils.h: de-linting oriented cleanup.
+
+Sun Jul 13 00:46:48 PDT 1997  Ken Pizzini <ken@gnu.org>
+
+	* sed.c: fixed bug which caused SEGV for files missing a
+	final newline.  Corrected calls to regnexec to pass the
+	proper parameters, in the proper order.
+
+Sat Dec 30 20:16:59 1995  Tom Lord  <lord@beehive>
+
+	*** Version 3.00 released
+	
+	* sed.c: Use posix entry points to regexp functions.
+	Fix enough bugs to pass the test-suite.
+
+....... Jason Molenda  <crash@cygnus.com>
+
+	* testsuite/: trippy test suite.
+
+
+Wed May 11 07:46:24 1994  Chip Salzenberg  (chip@fin.uucp)
+
+	*** Version 2.05 released
+	
+	* sed.c (compile_address): Recognize numeric addresses.
+	Fixes typo made during installation of "~" feature.
+
+Sat Apr 30 17:17:38 1994  Tom Lord  (lord@x1.cygnus.com)
+
+	*** Version 2.04 released
+
+	* sed.c: applied a patch from
+	 From: kap1@tao.cpe.uchicago.edu (Dietrich Kappe)
+
+	 Dietrich writes:
+
+	 As my contribution to the creeping feature creature in sed,
+	 here is a new type of address. The address has form n~m,
+	 which means "the line number is equal to n modulo m." The
+	 modifications to sed are trivial, and the general
+	 usefulness of this address should be obvious. If m is 0 or
+	 missing, 1 is used in its place (could be a bug or a
+	 feature :-).
+
+Sat Apr 30 17:17:38 1994  Tom Lord  (lord@x1.cygnus.com)
+
+	* rx.c (solve_destination): protect `solution' more carefully.
+	This is a cleanup of a patch from Kevin Buettner
+	 (kev@cujo.geg.mot.com).
+
+Sat Apr 30 17:17:38 1994  Tom Lord  (lord@x1.cygnus.com)
+
+	* rx.c: make translation tables unsigned chars
+
+	* sed.c (main): Compile accumulated -e commands as
+	soon as a -f command comes along.  This ensures that
+	the commands are executed in the right order.
+
+Mon Oct 25 14:41:47 1993  Tom Lord  (lord@rtl.cygnus.com)
+
+	* sed.c (execute_program): 'w' flushes the buffer after it
+	writes -- diagnosed by doug@research.att.com.  'r' and 'w' to
+	the same file is now supported -- hopefully even in a way that
+	satisfies Posix (it now behaves differently from some
+	/bin/sed's and the spec is hard to read so i'm not sure).
+
+	Also, 'r' of a non-existent file is now permitted.
+
+Mon Oct 11 21:06:10 1993  Tom Lord  (lord@cygnus.com)
+
+	* sed.c (execute_program): remember that 'b' and 't' are more
+	like longjmp than goto.  Patch from tom@basil.icce.rug.nl (Tom
+	R.Hageman)
+
+	* rx.c: patch from From: fin!chip@rutgers.edu (Chip
+	Salzenberg) to get rid of compiler warnings.
+
+
+Sat Aug  7 01:04:59 1993  Tom Lord  (lord@unix7.andrew.cmu.edu)
+
+	*** Version 2.03 released
+	
+	* sed.c (compile_regex): report error messages for bogus
+	regexps.
+
+	SEE ALSO:  ChangeLog.rx
+
+
+Wed Jul 21 00:28:03 1993  Tom Lord  (lord@unix8.andrew.cmu.edu)
+
+	* alloca.c: upgraded to a more recent version
+
+	* rx.c (re_search_2): prefer matches with longer
+	subexpressions to those with shorter ones, giving precedence
+	to low numbered subexpressions.
+
+	* rx.c (re_compile): don't free `params' if its null.
+
+Fri Jul 16 01:12:08 1993  Tom Lord  (lord@unix8.andrew.cmu.edu)
+
+	* rx.[ch], sed.c: rx replaces regex.
+
+
+
+Thu May 27 11:13:03 1993  Tom Lord  (lord@unix3.andrew.cmu.edu)
+
+	* sed.c (execute_program, match_addr): caught more cases
+	that need to be sensitive to a missing \n at EOF.
+
+Fri May 21 00:39:22 1993  Tom Lord  (lord@unix8.andrew.cmu.edu)
+
+	* sed.c (execute_program): apply gaumondp's patch
+	to fix '\xabcxs/foo/bar/'.
+
+	* sed.c (execute_program):
+	If a second address is a regexp, never match it on the
+	same line as the first address.
+
+	* sed.c (compile_regexp):
+	Numeric ranges  x,y s.t. y < x are now treated as x,x.
+	There was a bug in that they were being handled like x,x+1.
+
+	* sed.c (execute_program, read_pattern_space,
+	append_pattern_space) don't add newlines to lines
+	that don't have them.
+
+Wed May 19 13:34:45 1993  Tom Lord  (lord@unix9.andrew.cmu.edu)
+
+	* sed.c (compile_program): grok \\n in comments.
+
+Mon May 17 16:34:50 1993  Tom Lord  (lord@unix9.andrew.cmu.edu)
+
+	* alloca.c: new (standard) file
+
+	* configure.in: AC_CONSTified
+
+	* sed.c (compile_program): properly diagnose the error of
+	a missing command (e.g. sed /x/). (thanks gaumondp)
+
+	* sed.c (compile_regexp): handle character classes correctly.
+	Thanks gaumondp@ERE.UMontreal.CA
+	and  schwab@issan.informatik.uni-dortmund.de.
+
+Thu May  6 12:37:18 1993  Tom Lord  (lord@unix10.andrew.cmu.edu)
+
+	* sed.c (compile_filename, execute_program): don't use
+	`access' or `/dev/null'.
+
+	* sed.c (execute_program): 'N' at EOF should delete the pat buf.
+
+	* sed.c (compile_filename): truncate, don't append files
+	being openned for `w' or `s///w'
+
+	* sed.c (execute_program): -n switch shouldn't effect `i' or `c'.
+
+	* sed.c (compile_program): don't compile unescaped newlines
+	into the substitution string of an `s' command (they are an error).
+
+	* sed.c (compile_regex): correctly skip over character
+	sets that contain `]'.
+
+	* sed.c (execute_program): patch from gaumondp
+	Correctly handle empty-string matches in the case of an `s'
+	command with a repeat count.
+
+	* sed.c (compile_program): patch from gaumondp@ere.UMontreal.ca.
+	Don't consume characters after the label of a `b', `t' or `:' command.
+
+	* sed.c (compile_program): unmatched open braces are an error.
+
+	* sed.c (compile_file): when consuming an initial comment,
+	count lines correctly.
+
+Wed Nov 18 02:10:58 1992  Tom Lord  (lord@unix2.andrew.cmu.edu)
+
+	* sed.c (execute_program): Made s///p print even if -n was
+	specified.
+
+	* sed.c (compile_string): Changed the type of this function to
+	fix a compile warning.
+
+Wed Nov  4 17:15:34 1992  Tom Lord  (lord@unix7.andrew.cmu.edu)
+
+	* sed.c (main): Initialize the hold area to contain "\n"
+	instead of "".  In execute_program, all lines are expected
+	to be newline terminated.  Also, if H is the first command
+	in the script, the result is a pattern buffer that begins
+	with a blank line.  Thanks to pinard@iro.umontreal.ca
+	(Francois Pinard) for pointing out this and many other bugs.
+
+	* sed.c (execute_program): Fixed a case of `D' command.
+	Thanks Chris Weber <weber@bucknell.edu>
+
+	* sed.c: added new tests of no_default_output to make -n work.
+	Thanks Andrew Herbert <andrew@werple.apana.org.au>
+
+	* sed.c, configure.in,Makefile.in: autoconfed bcopy and const.
+	Thanks "J.T. Conklin" <jtc@gain.com>
+
+	* sed.c: made prog_cur, prog_start, and prog_end unsigned so
+	that users could write  `sed -e s/ÿ/foo/g'.
+
+Tue Oct 13 00:04:05 1992  Tom Lord  (lord@unix3.andrew.cmu.edu)
+
+	* sed.c (execute_program): fixed the cycling behavior of 'D'
+
+	* sed.c: integrated patch that closes files
+
+	* sed.c: changed regexp syntax
+
+Fri May 22 15:11:12 1992  Tom Lord  (lord at moriarty.bh.andrew.cmu.edu)
+
+	* regex.c:  this is not my change, but a pointer to the fact
+	that karl@gnu fixed some regexp bugs that were plaguing sed.
+
+Thu Apr 30 13:02:21 1992  Tom Lord  (lord at unix3.andrew.cmu.edu)
+
+	* sed.c (compile_program, execute_program)
+	subprograms are now compiled with an explicit continuation ;)
+	return_v and return_i in struct vector.  execute_program
+	no longer recurses to execute subprograms (case '{') and now
+	understands a return instruction (case '{').
+
+Tue Apr 28 17:13:04 1992  Tom Lord  (lord at unix7.andrew.cmu.edu)
+
+	* sed.c (compile_address) added \?regexp? syntax for addresses.
+
+	* sed.c (main) added {} intervals to the obscure regexp
+	syntax.
+
+	* sed.c (compile_program)  after calling compile_address,
+	normalize numeric addresses (make a2.addr_number > a1.addr_number).
+	This is necessary because line numbers must match exactly,
+	but sed does not try to match a2 until after a1 has matched,
+	yet a1,a2 where a2 <= a1 is defined to be equivelent to
+	a1,a1+1
+
+Sat Feb 29 10:55:54 1992  David J. MacKenzie  (djm@nutrimat)
+
+	* sed.c (usage): Document long options as starting with `--'.
+
+Mon Dec  9 23:56:40 1991  David J. MacKenzie  (djm at wookumz.gnu.ai.mit.edu)
+
+	* sed.c: Include sys/types.h, for new regex.h.
+
+Tue Nov  5 02:16:01 1991  David J. MacKenzie  (djm at wookumz.gnu.ai.mit.edu)
+
+	* utils.c: Change NO_VFPRINTF to VPRINTF_MISSING, for
+	compatibility with autoconf.
+
+Mon Sep  2 22:02:40 1991  David J. MacKenzie  (djm at apple-gunkies)
+
+	* sed.c (compile_regex): Treat \ as a normal character when in
+	a char class.
+
+Thu Aug  8 00:15:33 1991  David J. MacKenzie  (djm at bleen)
+
+	* Version 1.08.
+
+	* sed.c (compile_filename): If reading a file fails, read
+	/dev/null instead.  It's what Unix and POSIX do, effectively.
+
+	* sed.c (compile_regex): The 'slash' character doesn't
+	terminate the regex if it's in a character class.
+
+	* sed.c (main): If given no args, or bad option, print usage
+	message.
+	(usage): New function.
+
+	* sed.c (execute_program): Amount written for 'P' command was
+	wrong.  From stephend@ksr.com (Stephen Davis).
+
+Wed Aug  7 16:51:14 1991  David J. MacKenzie  (djm at apple-gunkies)
+
+	* sed.c (append_pattern_space): Check for buffer full before
+	instead of after writing to buffer.  Don't need to test for
+	EOF initially anymore, due to the next change.
+	(execute_program): For 'n' and 'N' commands, if eof is reached
+	in input, quit the script like Unix sed does.
+	Fix memory allocation problems for 'a' and 'r' commands.
+	(compile_program): Fix off by one error in processing comments.
+	All of the above are from Tapani Tarvainen, tarvaine@tukki.jyu.fi.
+
+	* sed.c (setup_jump): Use isblank instead of testing for ' '
+	or '\t', for POSIX locales.
+
+	* utils.c (ck_strdup): Renamed from strdup.
+	* sed.c: Change callers.
+
+	* sed.c, utils.c: Clean up declarations and includes to get
+	rid of compiler warnings.
+
+	* sed.c (main): Add long-named options.  Don't complain if -n
+	is given twice.
+
+Fri Aug  2 12:33:16 1991  David J. MacKenzie  (djm at apple-gunkies)
+
+	* configure: Support +srcdir arg.  Create config.status and
+	remove it and Makefile if interrupted while creating them.
+	* Makefile.in: Change DESTDIR to prefix.
+
+Mon Jul 15 13:07:39 1991  David J. MacKenzie  (djm at wookumz.gnu.ai.mit.edu)
+
+	* sed.c (main): Add -V option to print version number.
+	(USAGE): Mention -V.
+
+Mon Jul  8 01:42:22 1991  David J. MacKenzie  (djm at geech.gnu.ai.mit.edu)
+
+	* sed.c: Define bcopy in terms of memcpy if STDC_HEADERS as
+	well as if USG.
+	(compile_filename): Don't glob filename (for 'r' and 'w'
+	commands).  Unix sed doesn't do it and it's not very useful,
+	since it can only match 0 or 1 files.
+	(execute_program): Change '\a' to 007 since some compilers
+	don't recognize \a.
+	* utils.c: New file; code moved from sed.c.
+	* Replace Makefile with Makefile.in and configure.
+	Update README.
+
+Tue Mar 26 13:00:48 EST 1991	Jay Fenlason (hack@gnu.ai.mit.edu)
+
+	* sed.c (match_address)  Added a trivial cast for portability.
+
+Mon Feb 25 13:23:29 EST 1991	Jay Fenlason (hack@ai.mit.edu)
+
+	* sed.c  Changed 's' command to work with latest version of regex()
+	routines, which mysteriously changed somewhere in there. . .
+	A one-line patch from David Eckelkamp (eckelkamp@mcc.com).
+
+	Initialize the fastmap in the hopes that it'll make sed faster.
+
+Thu Feb 21 13:42:27 EST 1991	Jay Fenlason (hack@ai.mti.edu)
+
+	* sed.c Change panic to compile with other __STDC__ compilers.
+
+Wed Jan 30 10:46:38 EST 1991	Jay Fenlason (hack@ai.mit.edu)
+
+	* sed.c  Changed version number.  Made new release.
+
+Tue Nov 27 15:34:51 EST 1990	Jay Fenlason (hack@ai.mit.edu)
+
+	* sed.c (setup_jump)  Don't blow chunks if there isn't a label
+	after a b or t command.
+
+		(main) Don't panic if it a branch command doesn't have
+	a label to branch to.
+
+		(main)  Collect all the -e arguments together and parse them
+	all at once.  This way, -e { -e mumble -e } will work.
+
+	All these small patches from David Schmidt (davids@isc-br.isc-br.com)
+
+Tue Sep 11 12:51:37 EDT 1990	Jay Fenlason (hack@ai.mit.edu)
+
+	* sed.c Changed some function forward declarations to use VOID *
+	instead of char *
+
+Mon Jul 16 11:12:54 EDT 1990 Jay Fenlason (hack@ai.mit.edu)
+
+	* sed.c (ck_malloc)  Use malloc(1) instead of malloc(0) if given
+	a request for zero bytes.
+
+Tue Jun  5 02:05:37 1990  David J. MacKenzie  (djm at albert.ai.mit.edu)
+
+	* sed.c: Remove excess newlines from calls to panic.
+	Reformat some comments to fit in 79 columns.
+	Base whether to use void * on __STDC__, not __GNU__.
+	(main): Add missing arg when printing usage message.
+	Print usage if given invalid arg.
+	(panic) [__STDC__]: Add missing ", ...".
+	(compile_filename): Print correct error message if glob_filename
+	returns NULL.
+
+Thu Apr  5 21:41:12 1990  Jim Kingdon  (kingdon at pogo.ai.mit.edu)
+
+	* sed.c (execute_program, case 'r'): When need to realloc append.text,
+	multiply append.alloc by 2 instead of adding
+	cur_cmd->x.cmd_txt.text_len.
+
+Tue Mar  6 15:55:35 EST 1990 Jay Fenlason (hack@ai.mit.edu)
+
+	* sed.c (compile_regex)  Allocate 10 bytes extra space needed by
+	re_compile_pattern.
+
+Sun Feb 25 16:32:10 1990  Jim Kingdon  (kingdon at pogo.ai.mit.edu)
+
+	* sed.c (execute_program, case 'l'): Print \00 instead of \0.
+	Print backslash as \\ not \.
+	Print \xx instead of /xx.
+
+Thu Feb  1 14:02:28 EST 1990		hack@wookumz
+
+	* sed.c (memchr)  Use () inside inner loop so it will work correctly.
+	A two character patch from Robert A Bruce (rab@allspice.berkeley.edu)
+
+Wed Sep 27 18:47:39 EDT 1989		hack@ai.mit.edu
+
+	* sed.c (compile_regex)  New function.  When compiling regex,
+	turn ^ into \` and $ into \' so that they won't match on embedded
+	newlines.  UN*X	pattern matching is a crock.
+	(compile_program, compile_address) call compile_regex.
+
+Mon Sep 18 10:15:32 EDT 1989		hack@ai.mit.edu
+
+	* sed.c (compile_program):  define translate as unsigned char * so
+	that y command will work on non-ascii characters.
+
+	Changed version number to 1.06.
+
+Thu Sep 14 15:57:08 EDT 1989		hack@ai.mit.edu
+
+	* sed.c  (compile_program)  Let programs use ; to terminate } as
+	well as newline.
+
+	(read_file) Print an error msg to stderr if it can't open an
+	input file.
+
+Thu Mar 23 18:04:46 1989  Randall Smith  (randy at apple-gunkies.ai.mit.edu)
+
+	* Makefile, sed.c: Added new copyright notice.
+
+	* Makefile: Make distributions which follow the symlinks.
+
+hack@ai.mit.edu
+
+	1.05	Fixed error in 'r' (now does things in the right order)
+
+	1.04	Fixed s/re/rep/[number]
+
+	1.03	Fixes from Mike Haertel for regexps that match the
+		empty string, and for Ritchie stdio (non-sticky EOF)
+
+	1.02	Fixed 't', 'b', ':' to trim leading spaces and tabs
+		Fixed \\ in replacement of 's' command
+		Added comments
+
+	1.01	Added s/re/rep/[digits]
+		added #n as first line of script
+		added filename globbing
+		added 'l' command
+		All in the name of POSIX
+
+	1.00	Began (thinking about) distributing this file
+
+Local Variables:
+mode: indented-text
+left-margin: 8
+version-control: never
+End:
diff --git a/src/sed/INSTALL b/src/sed/INSTALL
new file mode 100644
index 0000000..54caf7c
--- /dev/null
+++ b/src/sed/INSTALL
@@ -0,0 +1,229 @@
+Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002 Free Software
+Foundation, Inc.
+
+   This file is free documentation; the Free Software Foundation gives
+unlimited permission to copy, distribute and modify it.
+
+Basic Installation
+==================
+
+   These are generic installation instructions.
+
+   The `configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation.  It uses
+those values to create a `Makefile' in each directory of the package.
+It may also create one or more `.h' files containing system-dependent
+definitions.  Finally, it creates a shell script `config.status' that
+you can run in the future to recreate the current configuration, and a
+file `config.log' containing compiler output (useful mainly for
+debugging `configure').
+
+   It can also use an optional file (typically called `config.cache'
+and enabled with `--cache-file=config.cache' or simply `-C') that saves
+the results of its tests to speed up reconfiguring.  (Caching is
+disabled by default to prevent problems with accidental use of stale
+cache files.)
+
+   If you need to do unusual things to compile the package, please try
+to figure out how `configure' could check whether to do them, and mail
+diffs or instructions to the address given in the `README' so they can
+be considered for the next release.  If you are using the cache, and at
+some point `config.cache' contains results you don't want to keep, you
+may remove or edit it.
+
+   The file `configure.ac' (or `configure.in') is used to create
+`configure' by a program called `autoconf'.  You only need
+`configure.ac' if you want to change it or regenerate `configure' using
+a newer version of `autoconf'.
+
+The simplest way to compile this package is:
+
+  1. `cd' to the directory containing the package's source code and type
+     `./configure' to configure the package for your system.  If you're
+     using `csh' on an old version of System V, you might need to type
+     `sh ./configure' instead to prevent `csh' from trying to execute
+     `configure' itself.
+
+     Running `configure' takes awhile.  While running, it prints some
+     messages telling which features it is checking for.
+
+  2. Type `make' to compile the package.
+
+  3. Optionally, type `make check' to run any self-tests that come with
+     the package.
+
+  4. Type `make install' to install the programs and any data files and
+     documentation.
+
+  5. You can remove the program binaries and object files from the
+     source code directory by typing `make clean'.  To also remove the
+     files that `configure' created (so you can compile the package for
+     a different kind of computer), type `make distclean'.  There is
+     also a `make maintainer-clean' target, but that is intended mainly
+     for the package's developers.  If you use it, you may have to get
+     all sorts of other programs in order to regenerate files that came
+     with the distribution.
+
+Compilers and Options
+=====================
+
+   Some systems require unusual options for compilation or linking that
+the `configure' script does not know about.  Run `./configure --help'
+for details on some of the pertinent environment variables.
+
+   You can give `configure' initial values for configuration parameters
+by setting variables in the command line or in the environment.  Here
+is an example:
+
+     ./configure CC=c89 CFLAGS=-O2 LIBS=-lposix
+
+   *Note Defining Variables::, for more details.
+
+Compiling For Multiple Architectures
+====================================
+
+   You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory.  To do this, you must use a version of `make' that
+supports the `VPATH' variable, such as GNU `make'.  `cd' to the
+directory where you want the object files and executables to go and run
+the `configure' script.  `configure' automatically checks for the
+source code in the directory that `configure' is in and in `..'.
+
+   If you have to use a `make' that does not support the `VPATH'
+variable, you have to compile the package for one architecture at a
+time in the source code directory.  After you have installed the
+package for one architecture, use `make distclean' before reconfiguring
+for another architecture.
+
+Installation Names
+==================
+
+   By default, `make install' will install the package's files in
+`/usr/local/bin', `/usr/local/man', etc.  You can specify an
+installation prefix other than `/usr/local' by giving `configure' the
+option `--prefix=PATH'.
+
+   You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files.  If you
+give `configure' the option `--exec-prefix=PATH', the package will use
+PATH as the prefix for installing programs and libraries.
+Documentation and other data files will still use the regular prefix.
+
+   In addition, if you use an unusual directory layout you can give
+options like `--bindir=PATH' to specify different values for particular
+kinds of files.  Run `configure --help' for a list of the directories
+you can set and what kinds of files go in them.
+
+   If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving `configure' the
+option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
+
+Optional Features
+=================
+
+   Some packages pay attention to `--enable-FEATURE' options to
+`configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to `--with-PACKAGE' options, where PACKAGE
+is something like `gnu-as' or `x' (for the X Window System).  The
+`README' should mention any `--enable-' and `--with-' options that the
+package recognizes.
+
+   For packages that use the X Window System, `configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the `configure' options `--x-includes=DIR' and
+`--x-libraries=DIR' to specify their locations.
+
+Specifying the System Type
+==========================
+
+   There may be some features `configure' cannot figure out
+automatically, but needs to determine by the type of machine the package
+will run on.  Usually, assuming the package is built to be run on the
+_same_ architectures, `configure' can figure that out, but if it prints
+a message saying it cannot guess the machine type, give it the
+`--build=TYPE' option.  TYPE can either be a short name for the system
+type, such as `sun4', or a canonical name which has the form:
+
+     CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+     OS KERNEL-OS
+
+   See the file `config.sub' for the possible values of each field.  If
+`config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+   If you are _building_ compiler tools for cross-compiling, you should
+use the `--target=TYPE' option to select the type of system they will
+produce code for.
+
+   If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with `--host=TYPE'.
+
+Sharing Defaults
+================
+
+   If you want to set default values for `configure' scripts to share,
+you can create a site shell script called `config.site' that gives
+default values for variables like `CC', `cache_file', and `prefix'.
+`configure' looks for `PREFIX/share/config.site' if it exists, then
+`PREFIX/etc/config.site' if it exists.  Or, you can set the
+`CONFIG_SITE' environment variable to the location of the site script.
+A warning: not all `configure' scripts look for a site script.
+
+Defining Variables
+==================
+
+   Variables not defined in a site shell script can be set in the
+environment passed to `configure'.  However, some packages may run
+configure again during the build, and the customized values of these
+variables may be lost.  In order to avoid this problem, you should set
+them in the `configure' command line, using `VAR=value'.  For example:
+
+     ./configure CC=/usr/local2/bin/gcc
+
+will cause the specified gcc to be used as the C compiler (unless it is
+overridden in the site shell script).
+
+`configure' Invocation
+======================
+
+   `configure' recognizes the following options to control how it
+operates.
+
+`--help'
+`-h'
+     Print a summary of the options to `configure', and exit.
+
+`--version'
+`-V'
+     Print the version of Autoconf used to generate the `configure'
+     script, and exit.
+
+`--cache-file=FILE'
+     Enable the cache: use and save the results of the tests in FILE,
+     traditionally `config.cache'.  FILE defaults to `/dev/null' to
+     disable caching.
+
+`--config-cache'
+`-C'
+     Alias for `--cache-file=config.cache'.
+
+`--quiet'
+`--silent'
+`-q'
+     Do not print messages saying which checks are being made.  To
+     suppress all normal output, redirect it to `/dev/null' (any error
+     messages will still be shown).
+
+`--srcdir=DIR'
+     Look for the package's source code in directory DIR.  Usually
+     `configure' can determine that directory automatically.
+
+`configure' also accepts some other, not widely useful, options.  Run
+`configure --help' for more details.
+
diff --git a/src/sed/Makefile.am b/src/sed/Makefile.am
new file mode 100644
index 0000000..a6ecc04
--- /dev/null
+++ b/src/sed/Makefile.am
@@ -0,0 +1,42 @@
+## Process this file with automake to produce Makefile.in
+
+# Automake requirements
+AUTOMAKE_OPTIONS = gnits 1.8
+ACLOCAL_AMFLAGS = -I config
+
+PACKAGE = sed
+
+SUBDIRS = intl lib po sed doc testsuite
+
+noinst_DATA = bootstrap.sh
+noinst_HEADERS = basicdefs.h
+
+EXTRA_DIST = BUGS THANKS COPYING.DOC README.boot bootstrap.sh 	      \
+	config/texi2dvi    config/help2man
+
+html:
+	cd doc && make html
+
+DISTCHECK_CONFIGURE_FLAGS = XGETTEXT='$(SHELL) -c : dummy' $(EXTRA_DC_FLAGS)
+EXTRA_DC_FLAGS = 
+
+full-distcheck:
+	make distcheck EXTRA_DC_FLAGS='--enable-html'
+	make distcheck EXTRA_DC_FLAGS='--disable-i18n'
+	make distcheck EXTRA_DC_FLAGS='--disable-nls'
+	make distcheck EXTRA_DC_FLAGS='--without-included-regex'
+	make distcheck EXTRA_DC_FLAGS='--without-included-gettext'
+
+update-regex:
+	HOST=sources.redhat.com && \
+	BASEURL="http://$$HOST/cgi-bin/cvsweb.cgi/~checkout~/libc/posix" && \
+	QUERY='cvsroot=glibc&content-type=text/plain' && \
+	wget -O lib/regcomp.c "$$BASEURL/regcomp.c?$$QUERY" && \
+	wget -O lib/regexec.c "$$BASEURL/regexec.c?$$QUERY" && \
+	wget -O lib/regex.c "$$BASEURL/regex.c?$$QUERY" && \
+	wget -O lib/regex_.h "$$BASEURL/regex.h?$$QUERY" && \
+	wget -O lib/regex_internal.c "$$BASEURL/regex_internal.c?$$QUERY" && \
+	wget -O lib/regex_internal.h "$$BASEURL/regex_internal.h?$$QUERY" && \
+	wget -O testsuite/BOOST.tests "$$BASEURL/BOOST.tests?$$QUERY" && \
+	wget -O testsuite/PCRE.tests "$$BASEURL/PCRE.tests?$$QUERY" && \
+	wget -O testsuite/SPENCER.tests "$$BASEURL/rxspencer/tests?$$QUERY"
diff --git a/src/sed/Makefile.in b/src/sed/Makefile.in
new file mode 100644
index 0000000..a93988d
--- /dev/null
+++ b/src/sed/Makefile.in
@@ -0,0 +1,680 @@
+# Makefile.in generated by automake 1.9.5 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005  Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+top_builddir = .
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+INSTALL = @INSTALL@
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+DIST_COMMON = README $(am__configure_deps) $(noinst_HEADERS) \
+	$(srcdir)/Makefile.am $(srcdir)/Makefile.in \
+	$(srcdir)/bootstrap.sh.in $(srcdir)/config_h.in \
+	$(top_srcdir)/configure $(top_srcdir)/intl/Makefile.in \
+	ABOUT-NLS AUTHORS COPYING COPYING.DOC ChangeLog INSTALL NEWS \
+	README-alpha THANKS config/config.guess config/config.rpath \
+	config/config.sub config/depcomp config/install-sh \
+	config/mdate-sh config/missing config/texinfo.tex
+subdir = .
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/config/codeset.m4 \
+	$(top_srcdir)/config/getline.m4 \
+	$(top_srcdir)/config/gettext-ver.m4 \
+	$(top_srcdir)/config/gettext.m4 \
+	$(top_srcdir)/config/glibc21.m4 $(top_srcdir)/config/iconv.m4 \
+	$(top_srcdir)/config/lcmessage.m4 \
+	$(top_srcdir)/config/lib-ld.m4 \
+	$(top_srcdir)/config/lib-link.m4 \
+	$(top_srcdir)/config/lib-prefix.m4 \
+	$(top_srcdir)/config/progtest.m4 \
+	$(top_srcdir)/config/stdbool.m4 \
+	$(top_srcdir)/config/strverscmp.m4 $(top_srcdir)/configure.ac
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+	$(ACLOCAL_M4)
+am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
+ configure.lineno configure.status.lineno
+mkinstalldirs = $(install_sh) -d
+CONFIG_HEADER = config.h
+CONFIG_CLEAN_FILES = bootstrap.sh intl/Makefile
+SOURCES =
+DIST_SOURCES =
+RECURSIVE_TARGETS = all-recursive check-recursive dvi-recursive \
+	html-recursive info-recursive install-data-recursive \
+	install-exec-recursive install-info-recursive \
+	install-recursive installcheck-recursive installdirs-recursive \
+	pdf-recursive ps-recursive uninstall-info-recursive \
+	uninstall-recursive
+DATA = $(noinst_DATA)
+HEADERS = $(noinst_HEADERS)
+ETAGS = etags
+CTAGS = ctags
+DIST_SUBDIRS = $(SUBDIRS)
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+distdir = $(PACKAGE)-$(VERSION)
+top_distdir = $(distdir)
+am__remove_distdir = \
+  { test ! -d $(distdir) \
+    || { find $(distdir) -type d ! -perm -200 -exec chmod u+w {} ';' \
+         && rm -fr $(distdir); }; }
+DIST_ARCHIVES = $(distdir).tar.gz
+GZIP_ENV = --best
+distuninstallcheck_listfiles = find . -type f -print
+distcleancheck_listfiles = find . -type f -print
+ACLOCAL = @ACLOCAL@
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+AMDEP_FALSE = @AMDEP_FALSE@
+AMDEP_TRUE = @AMDEP_TRUE@
+AMTAR = @AMTAR@
+AUTOCONF = @AUTOCONF@
+AUTOHEADER = @AUTOHEADER@
+AUTOMAKE = @AUTOMAKE@
+AWK = @AWK@
+BUILD_HTML_FALSE = @BUILD_HTML_FALSE@
+BUILD_HTML_TRUE = @BUILD_HTML_TRUE@
+BUILD_INCLUDED_LIBINTL = @BUILD_INCLUDED_LIBINTL@
+CATOBJEXT = @CATOBJEXT@
+CC = @CC@
+CCDEPMODE = @CCDEPMODE@
+CFLAGS = @CFLAGS@
+CPP = @CPP@
+CPPFLAGS = @CPPFLAGS@
+CYGPATH_W = @CYGPATH_W@
+DATADIRNAME = @DATADIRNAME@
+DEFS = @DEFS@
+DEPDIR = @DEPDIR@
+ECHO_C = @ECHO_C@
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+ECHO_T = @ECHO_T@
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+GENCAT = @GENCAT@
+GLIBC21 = @GLIBC21@
+GMSGFMT = @GMSGFMT@
+HAVE__BOOL = @HAVE__BOOL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INSTOBJEXT = @INSTOBJEXT@
+INTLBISON = @INTLBISON@
+INTLLIBS = @INTLLIBS@
+INTLOBJS = @INTLOBJS@
+INTL_LIBTOOL_SUFFIX_PREFIX = @INTL_LIBTOOL_SUFFIX_PREFIX@
+LDFLAGS = @LDFLAGS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBOBJS = @LIBOBJS@
+LIBS = @LIBS@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBOBJS = @LTLIBOBJS@
+MAKEINFO = @MAKEINFO@
+MAKEINFO_HTML_FALSE = @MAKEINFO_HTML_FALSE@
+MAKEINFO_HTML_TRUE = @MAKEINFO_HTML_TRUE@
+MKINSTALLDIRS = @MKINSTALLDIRS@
+MSGFMT = @MSGFMT@
+MSGMERGE = @MSGMERGE@
+OBJEXT = @OBJEXT@
+PACKAGE = sed
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+POSUB = @POSUB@
+RANLIB = @RANLIB@
+SED_FEATURE_VERSION = @SED_FEATURE_VERSION@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+STRIP = @STRIP@
+TEST_REGEX_FALSE = @TEST_REGEX_FALSE@
+TEST_REGEX_TRUE = @TEST_REGEX_TRUE@
+TEXI2HTML = @TEXI2HTML@
+TEXI2HTML_HTML_FALSE = @TEXI2HTML_HTML_FALSE@
+TEXI2HTML_HTML_TRUE = @TEXI2HTML_HTML_TRUE@
+USE_INCLUDED_LIBINTL = @USE_INCLUDED_LIBINTL@
+USE_NLS = @USE_NLS@
+VERSION = @VERSION@
+XGETTEXT = @XGETTEXT@
+ac_ct_CC = @ac_ct_CC@
+ac_ct_RANLIB = @ac_ct_RANLIB@
+ac_ct_STRIP = @ac_ct_STRIP@
+am__fastdepCC_FALSE = @am__fastdepCC_FALSE@
+am__fastdepCC_TRUE = @am__fastdepCC_TRUE@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+datadir = @datadir@
+exec_prefix = @exec_prefix@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libdir = @libdir@
+libexecdir = @libexecdir@
+localstatedir = @localstatedir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+oldincludedir = @oldincludedir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+
+# Automake requirements
+AUTOMAKE_OPTIONS = gnits 1.8
+ACLOCAL_AMFLAGS = -I config
+SUBDIRS = intl lib po sed doc testsuite
+noinst_DATA = bootstrap.sh
+noinst_HEADERS = basicdefs.h
+EXTRA_DIST = BUGS THANKS COPYING.DOC README.boot bootstrap.sh 	      \
+	config/texi2dvi    config/help2man
+
+DISTCHECK_CONFIGURE_FLAGS = XGETTEXT='$(SHELL) -c : dummy' $(EXTRA_DC_FLAGS)
+EXTRA_DC_FLAGS = 
+all: config.h
+	$(MAKE) $(AM_MAKEFLAGS) all-recursive
+
+.SUFFIXES:
+am--refresh:
+	@:
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      echo ' cd $(srcdir) && $(AUTOMAKE) --gnits '; \
+	      cd $(srcdir) && $(AUTOMAKE) --gnits  \
+		&& exit 0; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnits  Makefile'; \
+	cd $(top_srcdir) && \
+	  $(AUTOMAKE) --gnits  Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    echo ' $(SHELL) ./config.status'; \
+	    $(SHELL) ./config.status;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	$(SHELL) ./config.status --recheck
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(srcdir) && $(AUTOCONF)
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(srcdir) && $(ACLOCAL) $(ACLOCAL_AMFLAGS)
+
+config.h: stamp-h1
+	@if test ! -f $@; then \
+	  rm -f stamp-h1; \
+	  $(MAKE) stamp-h1; \
+	else :; fi
+
+stamp-h1: $(srcdir)/config_h.in $(top_builddir)/config.status
+	@rm -f stamp-h1
+	cd $(top_builddir) && $(SHELL) ./config.status config.h
+$(srcdir)/config_h.in:  $(am__configure_deps) 
+	cd $(top_srcdir) && $(AUTOHEADER)
+	rm -f stamp-h1
+	touch $@
+
+distclean-hdr:
+	-rm -f config.h stamp-h1
+bootstrap.sh: $(top_builddir)/config.status $(srcdir)/bootstrap.sh.in
+	cd $(top_builddir) && $(SHELL) ./config.status $@
+intl/Makefile: $(top_builddir)/config.status $(top_srcdir)/intl/Makefile.in
+	cd $(top_builddir) && $(SHELL) ./config.status $@
+uninstall-info-am:
+
+# This directory's subdirectories are mostly independent; you can cd
+# into them and run `make' without going through this Makefile.
+# To change the values of `make' variables: instead of editing Makefiles,
+# (1) if the variable is set in `config.status', edit `config.status'
+#     (which will cause the Makefiles to be regenerated when you run `make');
+# (2) otherwise, pass the desired values on the `make' command line.
+$(RECURSIVE_TARGETS):
+	@failcom='exit 1'; \
+	for f in x $$MAKEFLAGS; do \
+	  case $$f in \
+	    *=* | --[!k]*);; \
+	    *k*) failcom='fail=yes';; \
+	  esac; \
+	done; \
+	dot_seen=no; \
+	target=`echo $@ | sed s/-recursive//`; \
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	  || eval $$failcom; \
+	done; \
+	if test "$$dot_seen" = "no"; then \
+	  $(MAKE) $(AM_MAKEFLAGS) "$$target-am" || exit 1; \
+	fi; test -z "$$fail"
+
+mostlyclean-recursive clean-recursive distclean-recursive \
+maintainer-clean-recursive:
+	@failcom='exit 1'; \
+	for f in x $$MAKEFLAGS; do \
+	  case $$f in \
+	    *=* | --[!k]*);; \
+	    *k*) failcom='fail=yes';; \
+	  esac; \
+	done; \
+	dot_seen=no; \
+	case "$@" in \
+	  distclean-* | maintainer-clean-*) list='$(DIST_SUBDIRS)' ;; \
+	  *) list='$(SUBDIRS)' ;; \
+	esac; \
+	rev=''; for subdir in $$list; do \
+	  if test "$$subdir" = "."; then :; else \
+	    rev="$$subdir $$rev"; \
+	  fi; \
+	done; \
+	rev="$$rev ."; \
+	target=`echo $@ | sed s/-recursive//`; \
+	for subdir in $$rev; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	  || eval $$failcom; \
+	done && test -z "$$fail"
+tags-recursive:
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  test "$$subdir" = . || (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) tags); \
+	done
+ctags-recursive:
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  test "$$subdir" = . || (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) ctags); \
+	done
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	mkid -fID $$unique
+tags: TAGS
+
+TAGS: tags-recursive $(HEADERS) $(SOURCES) config_h.in $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	if ($(ETAGS) --etags-include --version) >/dev/null 2>&1; then \
+	  include_option=--etags-include; \
+	  empty_fix=.; \
+	else \
+	  include_option=--include; \
+	  empty_fix=; \
+	fi; \
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    test ! -f $$subdir/TAGS || \
+	      tags="$$tags $$include_option=$$here/$$subdir/TAGS"; \
+	  fi; \
+	done; \
+	list='$(SOURCES) $(HEADERS) config_h.in $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	if test -z "$(ETAGS_ARGS)$$tags$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	    $$tags $$unique; \
+	fi
+ctags: CTAGS
+CTAGS: ctags-recursive $(HEADERS) $(SOURCES) config_h.in $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS) config_h.in $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	test -z "$(CTAGS_ARGS)$$tags$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$tags $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && cd $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) $$here
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@case `sed 15q $(srcdir)/NEWS` in \
+	*"$(VERSION)"*) : ;; \
+	*) \
+	  echo "NEWS not updated; not releasing" 1>&2; \
+	  exit 1;; \
+	esac
+	$(am__remove_distdir)
+	mkdir $(distdir)
+	$(mkdir_p) $(distdir)/. $(distdir)/config $(distdir)/intl $(distdir)/lib $(distdir)/po
+	@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's|.|.|g'`; \
+	list='$(DISTFILES)'; for file in $$list; do \
+	  case $$file in \
+	    $(srcdir)/*) file=`echo "$$file" | sed "s|^$$srcdirstrip/||"`;; \
+	    $(top_srcdir)/*) file=`echo "$$file" | sed "s|^$$topsrcdirstrip/|$(top_builddir)/|"`;; \
+	  esac; \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \
+	  if test "$$dir" != "$$file" && test "$$dir" != "."; then \
+	    dir="/$$dir"; \
+	    $(mkdir_p) "$(distdir)$$dir"; \
+	  else \
+	    dir=''; \
+	  fi; \
+	  if test -d $$d/$$file; then \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
+	    fi; \
+	    cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
+	  else \
+	    test -f $(distdir)/$$file \
+	    || cp -p $$d/$$file $(distdir)/$$file \
+	    || exit 1; \
+	  fi; \
+	done
+	list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    test -d "$(distdir)/$$subdir" \
+	    || $(mkdir_p) "$(distdir)/$$subdir" \
+	    || exit 1; \
+	    distdir=`$(am__cd) $(distdir) && pwd`; \
+	    top_distdir=`$(am__cd) $(top_distdir) && pwd`; \
+	    (cd $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$top_distdir" \
+	        distdir="$$distdir/$$subdir" \
+	        distdir) \
+	      || exit 1; \
+	  fi; \
+	done
+	-find $(distdir) -type d ! -perm -777 -exec chmod a+rwx {} \; -o \
+	  ! -type d ! -perm -444 -links 1 -exec chmod a+r {} \; -o \
+	  ! -type d ! -perm -400 -exec chmod a+r {} \; -o \
+	  ! -type d ! -perm -444 -exec $(SHELL) $(install_sh) -c -m a+r {} {} \; \
+	|| chmod -R a+r $(distdir)
+dist-gzip: distdir
+	tardir=$(distdir) && $(am__tar) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).tar.gz
+	$(am__remove_distdir)
+
+dist-bzip2: distdir
+	tardir=$(distdir) && $(am__tar) | bzip2 -9 -c >$(distdir).tar.bz2
+	$(am__remove_distdir)
+
+dist-tarZ: distdir
+	tardir=$(distdir) && $(am__tar) | compress -c >$(distdir).tar.Z
+	$(am__remove_distdir)
+
+dist-shar: distdir
+	shar $(distdir) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).shar.gz
+	$(am__remove_distdir)
+
+dist-zip: distdir
+	-rm -f $(distdir).zip
+	zip -rq $(distdir).zip $(distdir)
+	$(am__remove_distdir)
+
+dist dist-all: distdir
+	tardir=$(distdir) && $(am__tar) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).tar.gz
+	$(am__remove_distdir)
+
+# This target untars the dist file and tries a VPATH configuration.  Then
+# it guarantees that the distribution is self-contained by making another
+# tarfile.
+distcheck: dist
+	case '$(DIST_ARCHIVES)' in \
+	*.tar.gz*) \
+	  GZIP=$(GZIP_ENV) gunzip -c $(distdir).tar.gz | $(am__untar) ;;\
+	*.tar.bz2*) \
+	  bunzip2 -c $(distdir).tar.bz2 | $(am__untar) ;;\
+	*.tar.Z*) \
+	  uncompress -c $(distdir).tar.Z | $(am__untar) ;;\
+	*.shar.gz*) \
+	  GZIP=$(GZIP_ENV) gunzip -c $(distdir).shar.gz | unshar ;;\
+	*.zip*) \
+	  unzip $(distdir).zip ;;\
+	esac
+	chmod -R a-w $(distdir); chmod a+w $(distdir)
+	mkdir $(distdir)/_build
+	mkdir $(distdir)/_inst
+	chmod a-w $(distdir)
+	dc_install_base=`$(am__cd) $(distdir)/_inst && pwd | sed -e 's,^[^:\\/]:[\\/],/,'` \
+	  && dc_destdir="$${TMPDIR-/tmp}/am-dc-$$$$/" \
+	  && cd $(distdir)/_build \
+	  && ../configure --srcdir=.. --prefix="$$dc_install_base" \
+	    --with-included-gettext \
+	    $(DISTCHECK_CONFIGURE_FLAGS) \
+	  && $(MAKE) $(AM_MAKEFLAGS) \
+	  && $(MAKE) $(AM_MAKEFLAGS) dvi \
+	  && $(MAKE) $(AM_MAKEFLAGS) check \
+	  && $(MAKE) $(AM_MAKEFLAGS) install \
+	  && $(MAKE) $(AM_MAKEFLAGS) installcheck \
+	  && $(MAKE) $(AM_MAKEFLAGS) uninstall \
+	  && $(MAKE) $(AM_MAKEFLAGS) distuninstallcheck_dir="$$dc_install_base" \
+	        distuninstallcheck \
+	  && chmod -R a-w "$$dc_install_base" \
+	  && ({ \
+	       (cd ../.. && umask 077 && mkdir "$$dc_destdir") \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" install \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" uninstall \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" \
+	            distuninstallcheck_dir="$$dc_destdir" distuninstallcheck; \
+	      } || { rm -rf "$$dc_destdir"; exit 1; }) \
+	  && rm -rf "$$dc_destdir" \
+	  && $(MAKE) $(AM_MAKEFLAGS) dist \
+	  && rm -rf $(DIST_ARCHIVES) \
+	  && $(MAKE) $(AM_MAKEFLAGS) distcleancheck
+	$(am__remove_distdir)
+	@(echo "$(distdir) archives ready for distribution: "; \
+	  list='$(DIST_ARCHIVES)'; for i in $$list; do echo $$i; done) | \
+	  sed -e '1{h;s/./=/g;p;x;}' -e '$${p;x;}'
+distuninstallcheck:
+	@cd $(distuninstallcheck_dir) \
+	&& test `$(distuninstallcheck_listfiles) | wc -l` -le 1 \
+	   || { echo "ERROR: files left after uninstall:" ; \
+	        if test -n "$(DESTDIR)"; then \
+	          echo "  (check DESTDIR support)"; \
+	        fi ; \
+	        $(distuninstallcheck_listfiles) ; \
+	        exit 1; } >&2
+distcleancheck: distclean
+	@if test '$(srcdir)' = . ; then \
+	  echo "ERROR: distcleancheck can only run from a VPATH build" ; \
+	  exit 1 ; \
+	fi
+	@test `$(distcleancheck_listfiles) | wc -l` -eq 0 \
+	  || { echo "ERROR: files left in build directory after distclean:" ; \
+	       $(distcleancheck_listfiles) ; \
+	       exit 1; } >&2
+check-am: all-am
+check: check-recursive
+all-am: Makefile $(DATA) $(HEADERS) config.h
+installdirs: installdirs-recursive
+installdirs-am:
+install: install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-recursive
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-recursive
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic distclean-hdr distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+info: info-recursive
+
+info-am:
+
+install-data-am:
+
+install-exec-am:
+
+install-info: install-info-recursive
+
+install-man:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -rf $(top_srcdir)/autom4te.cache
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am: uninstall-info-am
+
+uninstall-info: uninstall-info-recursive
+
+.PHONY: $(RECURSIVE_TARGETS) CTAGS GTAGS all all-am am--refresh check \
+	check-am clean clean-generic clean-recursive ctags \
+	ctags-recursive dist dist-all dist-bzip2 dist-gzip dist-shar \
+	dist-tarZ dist-zip distcheck distclean distclean-generic \
+	distclean-hdr distclean-recursive distclean-tags \
+	distcleancheck distdir distuninstallcheck dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-exec install-exec-am install-info \
+	install-info-am install-man install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic maintainer-clean-recursive \
+	mostlyclean mostlyclean-generic mostlyclean-recursive pdf \
+	pdf-am ps ps-am tags tags-recursive uninstall uninstall-am \
+	uninstall-info-am
+
+
+html:
+	cd doc && make html
+
+full-distcheck:
+	make distcheck EXTRA_DC_FLAGS='--enable-html'
+	make distcheck EXTRA_DC_FLAGS='--disable-i18n'
+	make distcheck EXTRA_DC_FLAGS='--disable-nls'
+	make distcheck EXTRA_DC_FLAGS='--without-included-regex'
+	make distcheck EXTRA_DC_FLAGS='--without-included-gettext'
+
+update-regex:
+	HOST=sources.redhat.com && \
+	BASEURL="http://$$HOST/cgi-bin/cvsweb.cgi/~checkout~/libc/posix" && \
+	QUERY='cvsroot=glibc&content-type=text/plain' && \
+	wget -O lib/regcomp.c "$$BASEURL/regcomp.c?$$QUERY" && \
+	wget -O lib/regexec.c "$$BASEURL/regexec.c?$$QUERY" && \
+	wget -O lib/regex.c "$$BASEURL/regex.c?$$QUERY" && \
+	wget -O lib/regex_.h "$$BASEURL/regex.h?$$QUERY" && \
+	wget -O lib/regex_internal.c "$$BASEURL/regex_internal.c?$$QUERY" && \
+	wget -O lib/regex_internal.h "$$BASEURL/regex_internal.h?$$QUERY" && \
+	wget -O testsuite/BOOST.tests "$$BASEURL/BOOST.tests?$$QUERY" && \
+	wget -O testsuite/PCRE.tests "$$BASEURL/PCRE.tests?$$QUERY" && \
+	wget -O testsuite/SPENCER.tests "$$BASEURL/rxspencer/tests?$$QUERY"
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/sed/Makefile.kmk b/src/sed/Makefile.kmk
new file mode 100644
index 0000000..f34b3e8
--- /dev/null
+++ b/src/sed/Makefile.kmk
@@ -0,0 +1,112 @@
+# $Id: Makefile.kmk 3062 2017-09-30 11:26:21Z bird $
+## @file
+# Sub-Makefile for kmk_sed.
+#
+
+#
+# Copyright (c) 2006-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
+#
+# This file is part of kBuild.
+#
+# kBuild is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# kBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kBuild.  If not, see <http://www.gnu.org/licenses/>
+#
+#
+
+SUB_DEPTH = ../..
+include $(KBUILD_PATH)/subheader.kmk
+
+#
+# kmk_sed
+#
+PROGRAMS += kmk_sed
+
+kmk_sed_TEMPLATE = BIN
+kmk_sed_DEPS = \
+	$(kmk_sed_0_OUTDIR)/config.h \
+	$(kmk_sed_0_OUTDIR)/regex.h
+kmk_sed_CLEAN = $(kmk_sed_DEPS)
+kmk_sed_CFLAGS.solaris = -std=gnu99
+kmk_sed_INCS = \
+	$(kmk_sed_0_OUTDIR) \
+	. \
+	lib \
+	intl
+kmk_sed_DEFS = \
+	HAVE_CONFIG_H
+ifdef KBUILD_SOLARIS_10
+ kmk_sed_CFLAGS += -std=gnu99
+endif
+kmk_sed_SOURCES = \
+	sed/sed.c \
+	lib/regex.c \
+	sed/compile.c \
+	sed/execute.c \
+	sed/regexp.c \
+	sed/fmt.c \
+	sed/mbcs.c \
+	lib/getopt1.c \
+	lib/getopt.c \
+	lib/utils.c
+kmk_sed_SOURCES.darwin = \
+	lib/strverscmp.c \
+	lib/obstack.c \
+	lib/getline.c
+kmk_sed_SOURCES.dragonfly = \
+	lib/strverscmp.c \
+	lib/obstack.c \
+	lib/getline.c
+kmk_sed_SOURCES.freebsd = \
+	lib/strverscmp.c \
+	lib/obstack.c \
+	lib/getline.c
+kmk_sed_SOURCES.haiku = \
+	lib/strverscmp.c \
+	lib/obstack.c
+kmk_sed_SOURCES.netbsd = \
+	lib/strverscmp.c \
+	lib/obstack.c \
+	lib/getline.c
+kmk_sed_SOURCES.openbsd = \
+	lib/strverscmp.c \
+	lib/obstack.c \
+	lib/getline.c
+kmk_sed_SOURCES.solaris = \
+	lib/strverscmp.c \
+	lib/obstack.c \
+	lib/getline.c
+kmk_sed_SOURCES.win = \
+	lib/strverscmp.c \
+	lib/obstack.c \
+	lib/mkstemp.c \
+	lib/getline.c \
+	../lib/startuphacks-win.c
+
+kmk_sed_LIBS.win = $(LIB_KUTIL) # for stdout optimizations.
+
+include $(FILE_KBUILD_SUB_FOOTER)
+
+#
+# Use checked in config.h instead of running ./configure for it.
+#
+kmk_sed_config.h.$(KBUILD_TARGET) := $(kmk_sed_DEFPATH)/config.h.$(KBUILD_TARGET)
+
+$(kmk_sed_0_OUTDIR)/config.h: $(kmk_sed_config.h.$(KBUILD_TARGET)) | $(call DIRDEP,$(kmk_sed_0_OUTDIR))
+	$(CP) -f $^ $@
+
+#
+# Use the regex lib shipped with sed and not anything installed on the system.
+#
+$(kmk_sed_0_OUTDIR)/regex.h: $(kmk_sed_DEFPATH)/lib/regex_.h | $(call DIRDEP,$(kmk_sed_0_OUTDIR))
+	$(CP) -f $^ $@
+
diff --git a/src/sed/NEWS b/src/sed/NEWS
new file mode 100644
index 0000000..233ffef
--- /dev/null
+++ b/src/sed/NEWS
@@ -0,0 +1,454 @@
+Sed 4.1.5
+
+* fix parsing of a negative character class not including a closed bracket,
+  like [^]] or [^]a-z].
+
+* fix parsing of [ inside an y command, like y/[/A/.
+
+* output the result of commands a, r, R when a q command is found.
+
+----------------------------------------------------------------------------
+Sed 4.1.4
+
+* \B correctly means "not on a word boundary" rather than "inside a word"
+
+* bugfixes for platform without internationalization
+
+* more thorough testing framework for tarballs (`make full-distcheck')
+
+----------------------------------------------------------------------------
+Sed 4.1.3
+
+* regex addresses do not use leftmost-longest matching.  In other words,
+  /.\+/ only looks for a single character, and does not try to find as
+  many of them as possible like it used to do.
+
+* added a note to BUGS and the manual about changed interpretation
+  of `s|abc\|def||', and about localization issues.
+
+* fixed --disable-nls build problems on Solaris.
+
+* fixed `make check' in non-English locales.
+
+* `make check' tests the regex library by default if the included regex
+  is used (regex tests had to be enabled separately up to now).
+
+----------------------------------------------------------------------------
+Sed 4.1.2
+
+* fix bug in 'y' command in multi-byte character sets
+
+* fix severe bug in parsing of ranges with an embedded open bracket
+
+* fix off-by-one error when printing a "bad command" error
+
+----------------------------------------------------------------------------
+Sed 4.1.1
+
+* preserve permissions of in-place edited files
+
+* yield an error when running -i on terminals or other non regular files
+
+* do not interpret - as stdin when running in in-place editing mode
+
+* fix bug that prevented 's' command modifiers from working
+
+----------------------------------------------------------------------------
+Sed 4.1
+
+* // matches the last regular expression even in POSIXLY_CORRECT mode.
+
+* change the way we treat lines which are not terminated by a newline.
+Such lines are printed without the terminating newline (as before)
+but as soon as more text is sent to the same output stream, the
+missing newline is printed, so that the two lines don't concatenate.
+The behavior is now independent from POSIXLY_CORRECT because POSIX
+actually has undefined behavior in this case, and the new implementation
+arguably gives the ``least expected surprise''.  Thanks to Stepan
+Kasal for the implementation.
+
+* documentation improvements, with updated references to the POSIX.2
+specification
+
+* error messages on I/O errors are better, and -i does not leave temporary
+files around (e.g. when running ``sed -i'' on a directory).
+
+* escapes are accepted in the y command (for example: y/o/\n/ transforms
+o's into newlines)
+
+* -i option tries to set the owner and group to the same as the input file
+
+* `L' command is deprecated and will be removed in sed 4.2.
+
+* line number addresses are processed differently -- this is supposedly
+conformant to POSIX and surely more idiot-proof.  Line number addresses
+are not affected by jumping around them: they are activated and
+deactivated exactly where the script says, while previously
+    5,8b
+    1,5d
+would actually delete lines 1,2,3,4 and 9 (!).
+
+* multibyte characters are taken in consideration to compute the
+operands of s and y, provided you set LC_CTYPE correctly.  They are
+also considered by \l, \L, \u, \U, \E.
+
+* [\n] matches either backslash or 'n' when POSIXLY_CORRECT.
+
+* new option --posix, disables all GNU extensions.  POSIXLY_CORRECT only
+disables GNU extensions that violate the POSIX standard.
+
+* options -h and -V are not supported anymore, use --help and --version.
+
+* removed documentation for \s and \S which worked incorrectly
+
+* restored correct behavior for \w and \W: match [[:alnum:]_] and
+[^[:alnum:]_] (they used to match [[:alpha:]_] and [^[:alpha:]_]
+
+* the special address 0 can only be used in 0,/RE/ or 0~STEP addresses;
+other cases give an error (you are hindering portability for no reason
+if specifying 0,N and you are giving a dead command if specifying 0
+alone).
+
+* when a \ is used to escape the character that would terminate an operand
+of the s or y commands, the backslash is removed before the regex is
+compiled.  This is left undefined by POSIX; this behavior makes `s+x\+++g'
+remove occurrences of `x+', consistently with `s/x\///g'.  (However, if
+you enjoy yourself trying `s*x\***g', sed will use the `x*' regex, and you
+won't be able to pass down `x\*' while using * as the delimiter; ideas on
+how to simplify the parser in this respect, and/or gain more coherent
+semantics, are welcome).
+
+
+----------------------------------------------------------------------------
+Sed 4.0.9
+
+* 0 address behaves correctly in single-file (-i and -s) mode.
+
+* documentation improvements.
+
+* tested with many hosts and compilers.
+
+* updated regex matcher from upstream, with many bugfixes and speedups.
+
+* the `N' command's feature that is detailed in the BUGS file was disabled
+by the first change below in sed 4.0.8.  The behavior has now been
+restored, and is only enabled if POSIXLY_CORRECT behavior is not
+requested.
+
+----------------------------------------------------------------------------
+Sed 4.0.8
+
+* fix `sed n' printing the last line twice.
+
+* fix incorrect error message for invalid character classes.
+
+* fix segmentation violation with repeated empty subexpressions.
+
+* fix incorrect parsing of ^ after escaped (.
+
+* more comprehensive test suite (and with many expected failures...)
+
+----------------------------------------------------------------------------
+Sed 4.0.7
+
+* VPATH builds working on non-glibc machines
+
+* fixed bug in s///Np: was printing even if less than N matches were
+found.
+
+* fixed infinite loop on s///N when LHS matched a null string and
+there were not enough matches in pattern space
+
+* behavior of s///N is consistent with s///g when the LHS can match
+a null string (and the infinite loop did not happen :-)
+
+* updated some translations
+
+----------------------------------------------------------------------------
+Sed 4.0.6
+
+* added parameter to `v' for the version of sed that is expected.
+
+* configure switch --without-included-regex to use the system regex matcher
+
+* fix for -i option under Cygwin
+
+----------------------------------------------------------------------------
+Sed 4.0.5
+
+* portability fixes
+
+* improvements to some error messages (e.g. y/abc/defg/ incorrectly said
+`excess characters after command' instead of `y arguments have different
+lengths')
+
+* `a', `i', `l', `L', `r' accept two addresses except in POSIXLY_CORRECT
+mode.  Only `q' and `Q' do not accept two addresses in standard (GNU) mode.
+
+----------------------------------------------------------------------------
+Sed 4.0.4
+
+* documentation fixes
+
+* update regex matcher
+
+----------------------------------------------------------------------------
+Sed 4.0.3
+
+* fix packaging problem (two missing translation catalogs)
+
+----------------------------------------------------------------------------
+Sed 4.0.2
+
+* more translations
+
+* fix build problems (vpath builds and bootstrap builds)
+
+----------------------------------------------------------------------------
+Sed 4.0.1
+
+* Remove last vestiges of super-sed
+
+* man page automatically built
+
+* more translations provided
+
+* portability improvements
+
+----------------------------------------------------------------------------
+Sed 4.0
+
+* Update regex matcher
+
+----------------------------------------------------------------------------
+Sed 3.96
+
+* `y' command supports multibyte character sets
+
+* Update regex matcher
+
+----------------------------------------------------------------------------
+Sed 3.95
+
+* `R' command reads a single line from a file.
+
+* CR-LF pairs are always ignored under Windows, even if (under Cygwin)
+a disk is mounted as binary.
+
+* More attention to errors on stdout
+
+* New `W' command to write first line of pattern space to a file
+
+* Can customize line wrap width on single `l' commands
+
+* `L' command formats and reflows paragraphs like `fmt' does.
+
+* The test suite makefiles are better organized (this change is
+transparent however).
+
+* Compiles and bootstraps out-of-the-box under MinGW32 and Cygwin.
+
+* Optimizes cases when pattern space is truncated at its start or at
+its end by `D' or by a substitution command with an empty RHS.
+For example scripts like this,
+
+    seq 1 10000 | tr \\n \  | ./sed ':a; s/^[0-9][0-9]* //; ta'
+
+whose behavior was quadratic with previous versions of sed, have
+now linear behavior.
+
+* New command `e' to pipe the output of a command into the output
+of sed.
+
+* New option `e' to pass the output of the `s' command through the
+Bourne shell and get the result into pattern space.
+
+* Switched to obstacks in the parser -- less memory-related bugs
+(there were none AFAIK but you never know) and less memory usage.
+
+* New option -i, to support in-place editing a la Perl.  Usually one
+had to use ed or, for more complex tasks, resort to Perl; this is
+not necessary anymore.
+
+* Dumped buffering code.  The performance loss is 10%, but it caused
+bugs in systems with CRLF termination.  The current solution is
+not definitive, though.
+
+* Bug fix: Made the behavior of s/A*/x/g (i.e. `s' command with a
+possibly empty LHS) more consistent:
+
+       pattern               GNU sed 3.x       GNU sed 4.x
+        B                      xBx               xBx
+        BC                     xBxCx             xBxCx
+        BAC                    xBxxCx            xBxCx
+        BAAC                   xBxxCx            xBxCx
+
+* Bug fix: the // empty regular expressions now refers to the last
+regular expression that was matched, rather than to the last
+regular expression that was compiled.  This richer behavior seems
+to be the correct one (albeit neither one is POSIXLY_CORRECT).
+
+* Check for invalid backreferences in the RHS of the `s' command
+(e.g. s/1234/\1/)
+
+* Support for \[lLuUE] in the RHS of the `s' command like in Perl.
+
+* New regular expression matcher
+
+* Bug fix: if a file was redirected to be stdin, sed did not consume
+it.  So
+      (sed d; sed G) < TESTFILE
+
+double-spaced TESTFILE, while the equivalent `useless use of cat'
+      cat TESTFILE | (sed d; sed G)
+
+printed nothing (which is the correct behavior).  A test for this
+bug was added to the test suite.
+
+* The documentation is now much better, with a few examples provided,
+and a thorough description of regular expressions.  The manual often
+refers to "GNU extensions", but if they are described here they are
+specific to this version.
+
+* Documented command-line option:
+  -r, --regexp-extended
+    Use extended regexps -- e.g. (abc+) instead of \(abc\+\)
+
+* Added feature to the `w' command and to the `w' option of the `s'
+command: if the file name is /dev/stderr, it means the standard
+error (inspired by awk); and similarly for /dev/stdout.  This is
+disabled if POSIXLY_CORRECT is set.
+
+* Added `m' and `M' modifiers to `s' command for multi-line
+matching (Perl-style); in addresses, only `M' works.
+
+* Added `Q' command for `silent quit'; added ability to pass
+an exit code from a sed script to the caller.
+
+* Added `T' command for `branch if failed'.
+
+* Added `v' command, which is a do-nothing intended to fail on
+seds that do not support GNU sed 4.0's extensions.
+
+----------------------------------------------------------------------------
+Sed 3.02.80
+
+* Started new version nomenclature for pre-3.03 releases.  (I'm being
+pessimistic in assuming that .90 won't give me enough breathing room.)
+
+* Bug fixes: the regncomp()/regnexec() interfaces proved to be inadequate to
+properly handle expressions such as "s/\</#/g".  Re-abstracted the regex
+code in the sed/ tree, and now use the re_search_2() interface to the GNU
+regex routines.  This change also fixed a bug where /./ did not match the
+NUL character.  Had the glibc folk fix a bug in lib/regex.c where
+'s/0*\([0-9][0-9]\)/X\1X/' failed to match on input "002".
+
+* Added new command-line options:
+  -u, --unbuffered
+    Do not attempt to read-ahead more than required; do not buffer stdout.
+  -l N, --line-length=N
+    Specify the desired line-wrap length for the `l' command.
+    A length of "0" means "never wrap".
+
+* New internationalization translations added: fr ru de it el sk pt_BR sv
+(plus nl from 3.02a).
+
+* The s/// command now understands the following escapes
+(in both halves):
+	\a	an "alert" (BEL)
+	\f	a form-feed
+	\n	a newline
+	\r	a carriage-return
+	\t	a horizontal tab
+	\v	a vertical tab
+	\oNNN	a character with the octal value NNN
+	\dNNN	a character with the decimal value NNN
+	\xNN	a character with the hexadecimal value NN
+This behavior is disabled if POSIXLY_CORRECT is set, at least for the
+time being (until I can be convinced that this behavior does not violate
+the POSIX standard).  (Incidentally, \b (backspace) was omitted because
+of the conflict with the existing "word boundary" meaning. \ooo octal
+format was omitted because of the conflict with backreference syntax.)
+
+* If POSIXLY_CORRECT is set, the empty RE // now is the null match
+instead of "repeat the last REmatch".  As far as I can tell
+this behavior is mandated by POSIX, but it would break too many
+legacy sed scripts to blithely change GNU sed's default behavior.
+
+----------------------------------------------------------------------------
+Sed 3.02a
+
+* Added internationalization support, and an initial (already out of date)
+set of Dutch message translations (both provided by Erick Branderhorst).
+
+* Added support for scripts like:
+ sed -e 1ifoo -e '$abar'
+(note no need for \ <newline> after a, i, and c commands).
+Also, conditionally (on NO_INPUT_INDENT) added
+experimental support for skipping leading whitespace on
+each {a,i,c} input line.
+
+* Added addressing of the form:
+ /foo/,+5 p (print from foo to 5th line following)
+ /foo/,~5 p (print from foo to next line whose line number is a multiple of 5)
+The first address of these can be any of the previously existing
+addressing types; the +N and ~N forms are only allowed as the
+second address of a range.
+
+* Added support for pseudo-address "0" as the first address in an
+address-range, simplifying scripts which happen to match the end
+address on the first line of input.  For example, a script
+which deletes all lines from the beginning of the file to the
+first line which contains "foo" is now simply "sed 0,/foo/d",
+whereas before one had to go through contortions to deal with
+the possibility that "foo" might appear on the first line of
+the input.
+
+* Made NUL characters in regexps work "correctly" --- i.e., a NUL
+in a RE matches a NUL; it does not prematurely terminate the RE.
+(This only works in -f scripts, as the POSIX.1 exec*() interface
+only passes NUL-terminated strings, and so sed will only be able
+to see up to the first NUL in any -e scriptlet.)
+
+* Wherever a `;' is accepted as a command terminator, also allow a `}'
+or a `#' to appear.  (This allows for less cluttered-looking scripts.)
+
+* Lots of internal changes that are only relevant to source junkies
+and development testing.  Some of which might cause imperceptible
+performance improvements.
+
+----------------------------------------------------------------------------
+Sed 3.02
+
+* Fixed a bug in the parsing of character classes (e.g., /[[:space:]]/).
+Corrected an omission in djgpp/Makefile.am and an improper dependency
+in testsuite/Makefile.am.
+
+----------------------------------------------------------------------------
+Sed 3.01
+
+* This version of sed mainly contains bug fixes and portability
+enhancements, plus performance enhancements related to sed's handling
+of input files.  Due to excess performance penalties, I have reverted
+(relative to 3.00) to using regex.c instead of the rx package for
+regular expression handling, at the expense of losing true POSIX.2
+BRE compatibility.  However, performance related to regular expression
+handling *still* needs a fair bit of work.
+
+* One new feature has been added: regular expressions may be followed
+with an "I" directive ("i" was taken [the "i"nsert command]) to
+indicate that the regexp should be matched in a case-insensitive
+manner.  Also of note are a new organization to the source code,
+new documentation, and a new maintainer.
+
+----------------------------------------------------------------------------
+Sed 3.0
+
+* This version of sed passes the new test-suite donated by
+Jason Molenda.
+
+* Overall performance has been improved in the following sense: Sed 3.0
+is often slightly slower than sed 2.05.  On a few scripts, though, sed
+2.05 was so slow as to be nearly useless or to use up unreasonable
+amounts of memory.  These problems have been fixed and in such cases,
+sed 3.0 should have acceptable performance.
diff --git a/src/sed/README b/src/sed/README
new file mode 100644
index 0000000..3da31c2
--- /dev/null
+++ b/src/sed/README
@@ -0,0 +1,13 @@
+This is the GNU implementation of sed, the Unix stream editor.
+
+See the NEWS file for a brief summary and the ChangeLog for 
+more detailed descriptions of changes.
+
+See the file INSTALL for generic compilation and installation
+instructions.
+
+See the file BUGS for instructions about reporting bugs.
+
+The file README.boot gives instructions for making a "bootstrap"
+version of sed on systems which lack any pre-existing and working
+version of sed.
diff --git a/src/sed/README-alpha b/src/sed/README-alpha
new file mode 100644
index 0000000..9235efe
--- /dev/null
+++ b/src/sed/README-alpha
@@ -0,0 +1,8 @@
+This is an alpha version of GNU sed.  Please try it on a wide
+range of scripts (especially configure scripts) and submit
+bug reports to bonzini@gnu.org.
+
+Thanks,
+
+Paolo Bonzini
+GNU sed maintainer
diff --git a/src/sed/README.boot b/src/sed/README.boot
new file mode 100644
index 0000000..fd2d1a0
--- /dev/null
+++ b/src/sed/README.boot
@@ -0,0 +1,23 @@
+Because a working sed is a prerequisite for running the ``configure''
+script, I have provided the script ``bootstrap.sh'' which will attempt
+to build a version of sed adequate for running ``configure''.  If it
+fails, edit the ``config.h'' file that was created according to the
+comments found therein, and then try running ``bootstrap.sh'' again.
+
+The bootstrap build is quite likely to babble on and on with
+various compiler warnings.  You may want to tell bootstrap.sh
+how to invoke your compiler with warnings disabled.  For example,
+with a Bourne-like shell and gcc one could use:
+  $ CC='gcc -w' sh bootstrap.sh
+or with a csh-like shell, one could try:
+  % env CC='gcc -w' sh bootstrap.sh
+
+Once you get a working version of sed, temporarily install sed/sed
+somewhere in your $PATH, and then really re-build the normal way
+(starting with ``sh configure''); the bootstrap version is almost
+certainly more crippled than it needs to be on your machine.
+
+I don't much care to hear about any bugs in ``bootstrap'' versions
+of sed beyond those which actually keep the ``bootstrap'' version from
+building, or sed's configure script from running properly.  I am
+especially uninterested in compiler warnings from the bootstrap build.
diff --git a/src/sed/THANKS b/src/sed/THANKS
new file mode 100644
index 0000000..c8a8a32
--- /dev/null
+++ b/src/sed/THANKS
@@ -0,0 +1,49 @@
+Akim Demaille <akim@epita.fr>
+Alan Modra <alan@spri.levels.unisa.edu.au>
+Arnold Robbins <arnold@skeeve.com>
+Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+Andrew Herbert <andrew@werple.apana.org.au>
+Bruno Haible <haible@ilog.fr>
+Chip Salzenberg <chip@fin.uucp>
+Chris Weber <weber@bucknell.edu>
+David Eckelkamp <eckelkamp@mcc.com>
+David J. MacKenzie <djm@nutrimat>
+David Schmidt <davids@isc-br.isc-br.com>
+Dietrich Kappe <kap1@tao.cpe.uchicago.edu>
+Doug McIlroy <doug@research.att.com>
+Eero Hakkinen <eero17@bigfoot.com>
+Eli Zaretskii <eliz@is.elta.co.il>
+Eric Pement <epement@moody.edu>
+Erick Branderhorst <Erick.Branderhorst@asml.nl>
+Francois Pinard <pinard@iro.umontreal.ca>
+Gaumond Pierre <gaumondp@ERE.UMontreal.CA>
+Greg Ubben <gsu@romulus.ncsc.mil>
+Isamu Hasegawa <isamu@yamato.ibm.com>
+J.T. Conklin <jtc@gain.com>
+Jakub Jelinek <jakub@redhat.com>
+Jason Molenda <crash@cygnus.com>
+Jim Meyering <meyering@ascend.com>
+Laurent Vogel <lvl@club-internet.fr>
+Karl Berry <karl@freefriends.org>
+Karl Heuer <kwzh@gnu.org>
+Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
+Kevin Buettner <kev@cujo.geg.mot.com>
+Maciej W. Rozycki <macro@linux-mips.org>
+Mark Kettenis <kettenis@phys.uva.nl>
+Michael De La Rue <delarue@NTCCSC01WA.ntc.nokia.com>
+Michel de Ruiter <mdruiter@cs.vu.nl>
+Paul Eggert <eggert@twinsun.com>
+Robert A Bruce <rab@allspice.berkeley.edu>
+Ronnie Glasscock <Ronnie.N.Glasscock@bridge.bellsouth.com>
+Simon Taylor <simon@unisolve.com.au>
+Stepan Kasal <kasal@ucw.cz>
+Stephen Davis <stephend@ksr.com>
+Steve Ingram <si@maps-r-us.com>
+Tapani Tarvainen <tarvaine@tukki.jyu.fi>
+Timothy J Luoma <luomat@peak.org>
+Tom R.Hageman <tom@basil.icce.rug.nl>
+Ulrich Drepper <drepper@redhat.com>
+Vladimir Volovich <vvv@vvv.vsu.ru>
+Wichert Akkerman <wakkerma@debian.org>
+
+And the GNU translation teams.
diff --git a/src/sed/aclocal.m4 b/src/sed/aclocal.m4
new file mode 100644
index 0000000..ccae84f
--- /dev/null
+++ b/src/sed/aclocal.m4
@@ -0,0 +1,875 @@
+# generated automatically by aclocal 1.9.5 -*- Autoconf -*-
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+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005  Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+# Copyright (C) 2002, 2003, 2005  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
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+# ----------------------------
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+	 [AM_AUTOMAKE_VERSION([1.9.5])])
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+# AM_CONDITIONAL                                            -*- Autoconf -*-
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+# Free Software Foundation, Inc.
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+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005
+# Free Software Foundation, Inc.
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+  # Check whether this is an Automake generated Makefile or not.
+  # We used to match only the files named `Makefile.in', but
+  # some people rename them; so instead we look at the file content.
+  # Grep'ing the first line is not enough: some people post-process
+  # each Makefile.in and add a new line on top of each file to say so.
+  # So let's grep whole file.
+  if grep '^#.*generated by automake' $mf > /dev/null 2>&1; then
+    dirpart=`AS_DIRNAME("$mf")`
+  else
+    continue
+  fi
+  # Extract the definition of DEPDIR, am__include, and am__quote
+  # from the Makefile without running `make'.
+  DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
+  test -z "$DEPDIR" && continue
+  am__include=`sed -n 's/^am__include = //p' < "$mf"`
+  test -z "am__include" && continue
+  am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
+  # When using ansi2knr, U may be empty or an underscore; expand it
+  U=`sed -n 's/^U = //p' < "$mf"`
+  # Find all dependency output files, they are included files with
+  # $(DEPDIR) in their names.  We invoke sed twice because it is the
+  # simplest approach to changing $(DEPDIR) to its actual value in the
+  # expansion.
+  for file in `sed -n "
+    s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
+       sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
+    # Make sure the directory exists.
+    test -f "$dirpart/$file" && continue
+    fdir=`AS_DIRNAME(["$file"])`
+    AS_MKDIR_P([$dirpart/$fdir])
+    # echo "creating $dirpart/$file"
+    echo '# dummy' > "$dirpart/$file"
+  done
+done
+])# _AM_OUTPUT_DEPENDENCY_COMMANDS
+
+
+# AM_OUTPUT_DEPENDENCY_COMMANDS
+# -----------------------------
+# This macro should only be invoked once -- use via AC_REQUIRE.
+#
+# This code is only required when automatic dependency tracking
+# is enabled.  FIXME.  This creates each `.P' file that we will
+# need in order to bootstrap the dependency handling code.
+AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
+[AC_CONFIG_COMMANDS([depfiles],
+     [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
+     [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
+])
+
+# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 8
+
+# AM_CONFIG_HEADER is obsolete.  It has been replaced by AC_CONFIG_HEADERS.
+AU_DEFUN([AM_CONFIG_HEADER], [AC_CONFIG_HEADERS($@)])
+
+# Do all the work for Automake.                             -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 12
+
+# This macro actually does too much.  Some checks are only needed if
+# your package does certain things.  But this isn't really a big deal.
+
+# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
+# AM_INIT_AUTOMAKE([OPTIONS])
+# -----------------------------------------------
+# The call with PACKAGE and VERSION arguments is the old style
+# call (pre autoconf-2.50), which is being phased out.  PACKAGE
+# and VERSION should now be passed to AC_INIT and removed from
+# the call to AM_INIT_AUTOMAKE.
+# We support both call styles for the transition.  After
+# the next Automake release, Autoconf can make the AC_INIT
+# arguments mandatory, and then we can depend on a new Autoconf
+# release and drop the old call support.
+AC_DEFUN([AM_INIT_AUTOMAKE],
+[AC_PREREQ([2.58])dnl
+dnl Autoconf wants to disallow AM_ names.  We explicitly allow
+dnl the ones we care about.
+m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
+AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
+AC_REQUIRE([AC_PROG_INSTALL])dnl
+# test to see if srcdir already configured
+if test "`cd $srcdir && pwd`" != "`pwd`" &&
+   test -f $srcdir/config.status; then
+  AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
+fi
+
+# test whether we have cygpath
+if test -z "$CYGPATH_W"; then
+  if (cygpath --version) >/dev/null 2>/dev/null; then
+    CYGPATH_W='cygpath -w'
+  else
+    CYGPATH_W=echo
+  fi
+fi
+AC_SUBST([CYGPATH_W])
+
+# Define the identity of the package.
+dnl Distinguish between old-style and new-style calls.
+m4_ifval([$2],
+[m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
+ AC_SUBST([PACKAGE], [$1])dnl
+ AC_SUBST([VERSION], [$2])],
+[_AM_SET_OPTIONS([$1])dnl
+ AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
+ AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
+
+_AM_IF_OPTION([no-define],,
+[AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
+ AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package])])dnl
+
+# Some tools Automake needs.
+AC_REQUIRE([AM_SANITY_CHECK])dnl
+AC_REQUIRE([AC_ARG_PROGRAM])dnl
+AM_MISSING_PROG(ACLOCAL, aclocal-${am__api_version})
+AM_MISSING_PROG(AUTOCONF, autoconf)
+AM_MISSING_PROG(AUTOMAKE, automake-${am__api_version})
+AM_MISSING_PROG(AUTOHEADER, autoheader)
+AM_MISSING_PROG(MAKEINFO, makeinfo)
+AM_PROG_INSTALL_SH
+AM_PROG_INSTALL_STRIP
+AC_REQUIRE([AM_PROG_MKDIR_P])dnl
+# We need awk for the "check" target.  The system "awk" is bad on
+# some platforms.
+AC_REQUIRE([AC_PROG_AWK])dnl
+AC_REQUIRE([AC_PROG_MAKE_SET])dnl
+AC_REQUIRE([AM_SET_LEADING_DOT])dnl
+_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
+              [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
+	      		     [_AM_PROG_TAR([v7])])])
+_AM_IF_OPTION([no-dependencies],,
+[AC_PROVIDE_IFELSE([AC_PROG_CC],
+                  [_AM_DEPENDENCIES(CC)],
+                  [define([AC_PROG_CC],
+                          defn([AC_PROG_CC])[_AM_DEPENDENCIES(CC)])])dnl
+AC_PROVIDE_IFELSE([AC_PROG_CXX],
+                  [_AM_DEPENDENCIES(CXX)],
+                  [define([AC_PROG_CXX],
+                          defn([AC_PROG_CXX])[_AM_DEPENDENCIES(CXX)])])dnl
+])
+])
+
+
+# When config.status generates a header, we must update the stamp-h file.
+# This file resides in the same directory as the config header
+# that is generated.  The stamp files are numbered to have different names.
+
+# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
+# loop where config.status creates the headers, so we can generate
+# our stamp files there.
+AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
+[# Compute $1's index in $config_headers.
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+  case $_am_header in
+    $1 | $1:* )
+      break ;;
+    * )
+      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+  esac
+done
+echo "timestamp for $1" >`AS_DIRNAME([$1])`/stamp-h[]$_am_stamp_count])
+
+# Copyright (C) 2001, 2003, 2005  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_INSTALL_SH
+# ------------------
+# Define $install_sh.
+AC_DEFUN([AM_PROG_INSTALL_SH],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+install_sh=${install_sh-"$am_aux_dir/install-sh"}
+AC_SUBST(install_sh)])
+
+# Copyright (C) 2003, 2005  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# Check whether the underlying file-system supports filenames
+# with a leading dot.  For instance MS-DOS doesn't.
+AC_DEFUN([AM_SET_LEADING_DOT],
+[rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+AC_SUBST([am__leading_dot])])
+
+# Check to see how 'make' treats includes.	            -*- Autoconf -*-
+
+# Copyright (C) 2001, 2002, 2003, 2005  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 3
+
+# AM_MAKE_INCLUDE()
+# -----------------
+# Check to see how make treats includes.
+AC_DEFUN([AM_MAKE_INCLUDE],
+[am_make=${MAKE-make}
+cat > confinc << 'END'
+am__doit:
+	@echo done
+.PHONY: am__doit
+END
+# If we don't find an include directive, just comment out the code.
+AC_MSG_CHECKING([for style of include used by $am_make])
+am__include="#"
+am__quote=
+_am_result=none
+# First try GNU make style include.
+echo "include confinc" > confmf
+# We grep out `Entering directory' and `Leaving directory'
+# messages which can occur if `w' ends up in MAKEFLAGS.
+# In particular we don't look at `^make:' because GNU make might
+# be invoked under some other name (usually "gmake"), in which
+# case it prints its new name instead of `make'.
+if test "`$am_make -s -f confmf 2> /dev/null | grep -v 'ing directory'`" = "done"; then
+   am__include=include
+   am__quote=
+   _am_result=GNU
+fi
+# Now try BSD make style include.
+if test "$am__include" = "#"; then
+   echo '.include "confinc"' > confmf
+   if test "`$am_make -s -f confmf 2> /dev/null`" = "done"; then
+      am__include=.include
+      am__quote="\""
+      _am_result=BSD
+   fi
+fi
+AC_SUBST([am__include])
+AC_SUBST([am__quote])
+AC_MSG_RESULT([$_am_result])
+rm -f confinc confmf
+])
+
+# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
+
+# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2005
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 4
+
+# AM_MISSING_PROG(NAME, PROGRAM)
+# ------------------------------
+AC_DEFUN([AM_MISSING_PROG],
+[AC_REQUIRE([AM_MISSING_HAS_RUN])
+$1=${$1-"${am_missing_run}$2"}
+AC_SUBST($1)])
+
+
+# AM_MISSING_HAS_RUN
+# ------------------
+# Define MISSING if not defined so far and test if it supports --run.
+# If it does, set am_missing_run to use it, otherwise, to nothing.
+AC_DEFUN([AM_MISSING_HAS_RUN],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+test x"${MISSING+set}" = xset || MISSING="\${SHELL} $am_aux_dir/missing"
+# Use eval to expand $SHELL
+if eval "$MISSING --run true"; then
+  am_missing_run="$MISSING --run "
+else
+  am_missing_run=
+  AC_MSG_WARN([`missing' script is too old or missing])
+fi
+])
+
+# Copyright (C) 2003, 2004, 2005  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_MKDIR_P
+# ---------------
+# Check whether `mkdir -p' is supported, fallback to mkinstalldirs otherwise.
+#
+# Automake 1.8 used `mkdir -m 0755 -p --' to ensure that directories
+# created by `make install' are always world readable, even if the
+# installer happens to have an overly restrictive umask (e.g. 077).
+# This was a mistake.  There are at least two reasons why we must not
+# use `-m 0755':
+#   - it causes special bits like SGID to be ignored,
+#   - it may be too restrictive (some setups expect 775 directories).
+#
+# Do not use -m 0755 and let people choose whatever they expect by
+# setting umask.
+#
+# We cannot accept any implementation of `mkdir' that recognizes `-p'.
+# Some implementations (such as Solaris 8's) are not thread-safe: if a
+# parallel make tries to run `mkdir -p a/b' and `mkdir -p a/c'
+# concurrently, both version can detect that a/ is missing, but only
+# one can create it and the other will error out.  Consequently we
+# restrict ourselves to GNU make (using the --version option ensures
+# this.)
+AC_DEFUN([AM_PROG_MKDIR_P],
+[if mkdir -p --version . >/dev/null 2>&1 && test ! -d ./--version; then
+  # We used to keeping the `.' as first argument, in order to
+  # allow $(mkdir_p) to be used without argument.  As in
+  #   $(mkdir_p) $(somedir)
+  # where $(somedir) is conditionally defined.  However this is wrong
+  # for two reasons:
+  #  1. if the package is installed by a user who cannot write `.'
+  #     make install will fail,
+  #  2. the above comment should most certainly read
+  #     $(mkdir_p) $(DESTDIR)$(somedir)
+  #     so it does not work when $(somedir) is undefined and
+  #     $(DESTDIR) is not.
+  #  To support the latter case, we have to write
+  #     test -z "$(somedir)" || $(mkdir_p) $(DESTDIR)$(somedir),
+  #  so the `.' trick is pointless.
+  mkdir_p='mkdir -p --'
+else
+  # On NextStep and OpenStep, the `mkdir' command does not
+  # recognize any option.  It will interpret all options as
+  # directories to create, and then abort because `.' already
+  # exists.
+  for d in ./-p ./--version;
+  do
+    test -d $d && rmdir $d
+  done
+  # $(mkinstalldirs) is defined by Automake if mkinstalldirs exists.
+  if test -f "$ac_aux_dir/mkinstalldirs"; then
+    mkdir_p='$(mkinstalldirs)'
+  else
+    mkdir_p='$(install_sh) -d'
+  fi
+fi
+AC_SUBST([mkdir_p])])
+
+# Helper functions for option handling.                     -*- Autoconf -*-
+
+# Copyright (C) 2001, 2002, 2003, 2005  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 3
+
+# _AM_MANGLE_OPTION(NAME)
+# -----------------------
+AC_DEFUN([_AM_MANGLE_OPTION],
+[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
+
+# _AM_SET_OPTION(NAME)
+# ------------------------------
+# Set option NAME.  Presently that only means defining a flag for this option.
+AC_DEFUN([_AM_SET_OPTION],
+[m4_define(_AM_MANGLE_OPTION([$1]), 1)])
+
+# _AM_SET_OPTIONS(OPTIONS)
+# ----------------------------------
+# OPTIONS is a space-separated list of Automake options.
+AC_DEFUN([_AM_SET_OPTIONS],
+[AC_FOREACH([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
+
+# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
+# -------------------------------------------
+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+AC_DEFUN([_AM_IF_OPTION],
+[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
+
+# Check to make sure that the build environment is sane.    -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 4
+
+# AM_SANITY_CHECK
+# ---------------
+AC_DEFUN([AM_SANITY_CHECK],
+[AC_MSG_CHECKING([whether build environment is sane])
+# Just in case
+sleep 1
+echo timestamp > conftest.file
+# Do `set' in a subshell so we don't clobber the current shell's
+# arguments.  Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+   set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null`
+   if test "$[*]" = "X"; then
+      # -L didn't work.
+      set X `ls -t $srcdir/configure conftest.file`
+   fi
+   rm -f conftest.file
+   if test "$[*]" != "X $srcdir/configure conftest.file" \
+      && test "$[*]" != "X conftest.file $srcdir/configure"; then
+
+      # If neither matched, then we have a broken ls.  This can happen
+      # if, for instance, CONFIG_SHELL is bash and it inherits a
+      # broken ls alias from the environment.  This has actually
+      # happened.  Such a system could not be considered "sane".
+      AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
+alias in your environment])
+   fi
+
+   test "$[2]" = conftest.file
+   )
+then
+   # Ok.
+   :
+else
+   AC_MSG_ERROR([newly created file is older than distributed files!
+Check your system clock])
+fi
+AC_MSG_RESULT(yes)])
+
+# Copyright (C) 2001, 2003, 2005  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_INSTALL_STRIP
+# ---------------------
+# One issue with vendor `install' (even GNU) is that you can't
+# specify the program used to strip binaries.  This is especially
+# annoying in cross-compiling environments, where the build's strip
+# is unlikely to handle the host's binaries.
+# Fortunately install-sh will honor a STRIPPROG variable, so we
+# always use install-sh in `make install-strip', and initialize
+# STRIPPROG with the value of the STRIP variable (set by the user).
+AC_DEFUN([AM_PROG_INSTALL_STRIP],
+[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+# Installed binaries are usually stripped using `strip' when the user
+# run `make install-strip'.  However `strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the `STRIP' environment variable to overrule this program.
+dnl Don't test for $cross_compiling = yes, because it might be `maybe'.
+if test "$cross_compiling" != no; then
+  AC_CHECK_TOOL([STRIP], [strip], :)
+fi
+INSTALL_STRIP_PROGRAM="\${SHELL} \$(install_sh) -c -s"
+AC_SUBST([INSTALL_STRIP_PROGRAM])])
+
+# Check how to create a tarball.                            -*- Autoconf -*-
+
+# Copyright (C) 2004, 2005  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# _AM_PROG_TAR(FORMAT)
+# --------------------
+# Check how to create a tarball in format FORMAT.
+# FORMAT should be one of `v7', `ustar', or `pax'.
+#
+# Substitute a variable $(am__tar) that is a command
+# writing to stdout a FORMAT-tarball containing the directory
+# $tardir.
+#     tardir=directory && $(am__tar) > result.tar
+#
+# Substitute a variable $(am__untar) that extract such
+# a tarball read from stdin.
+#     $(am__untar) < result.tar
+AC_DEFUN([_AM_PROG_TAR],
+[# Always define AMTAR for backward compatibility.
+AM_MISSING_PROG([AMTAR], [tar])
+m4_if([$1], [v7],
+     [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'],
+     [m4_case([$1], [ustar],, [pax],,
+              [m4_fatal([Unknown tar format])])
+AC_MSG_CHECKING([how to create a $1 tar archive])
+# Loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
+_am_tools=${am_cv_prog_tar_$1-$_am_tools}
+# Do not fold the above two line into one, because Tru64 sh and
+# Solaris sh will not grok spaces in the rhs of `-'.
+for _am_tool in $_am_tools
+do
+  case $_am_tool in
+  gnutar)
+    for _am_tar in tar gnutar gtar;
+    do
+      AM_RUN_LOG([$_am_tar --version]) && break
+    done
+    am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
+    am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
+    am__untar="$_am_tar -xf -"
+    ;;
+  plaintar)
+    # Must skip GNU tar: if it does not support --format= it doesn't create
+    # ustar tarball either.
+    (tar --version) >/dev/null 2>&1 && continue
+    am__tar='tar chf - "$$tardir"'
+    am__tar_='tar chf - "$tardir"'
+    am__untar='tar xf -'
+    ;;
+  pax)
+    am__tar='pax -L -x $1 -w "$$tardir"'
+    am__tar_='pax -L -x $1 -w "$tardir"'
+    am__untar='pax -r'
+    ;;
+  cpio)
+    am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
+    am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
+    am__untar='cpio -i -H $1 -d'
+    ;;
+  none)
+    am__tar=false
+    am__tar_=false
+    am__untar=false
+    ;;
+  esac
+
+  # If the value was cached, stop now.  We just wanted to have am__tar
+  # and am__untar set.
+  test -n "${am_cv_prog_tar_$1}" && break
+
+  # tar/untar a dummy directory, and stop if the command works
+  rm -rf conftest.dir
+  mkdir conftest.dir
+  echo GrepMe > conftest.dir/file
+  AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
+  rm -rf conftest.dir
+  if test -s conftest.tar; then
+    AM_RUN_LOG([$am__untar <conftest.tar])
+    grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
+  fi
+done
+rm -rf conftest.dir
+
+AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
+AC_MSG_RESULT([$am_cv_prog_tar_$1])])
+AC_SUBST([am__tar])
+AC_SUBST([am__untar])
+]) # _AM_PROG_TAR
+
+m4_include([config/codeset.m4])
+m4_include([config/getline.m4])
+m4_include([config/gettext-ver.m4])
+m4_include([config/gettext.m4])
+m4_include([config/glibc21.m4])
+m4_include([config/iconv.m4])
+m4_include([config/lcmessage.m4])
+m4_include([config/lib-ld.m4])
+m4_include([config/lib-link.m4])
+m4_include([config/lib-prefix.m4])
+m4_include([config/progtest.m4])
+m4_include([config/stdbool.m4])
+m4_include([config/strverscmp.m4])
diff --git a/src/sed/basicdefs.h b/src/sed/basicdefs.h
new file mode 100644
index 0000000..d4b9e47
--- /dev/null
+++ b/src/sed/basicdefs.h
@@ -0,0 +1,207 @@
+/*  GNU SED, a batch stream editor.
+    Copyright (C) 1998, 1999, 2002, 2003 Free Software Foundation, Inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2, or (at your option)
+    any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifndef BASICDEFS_H
+#define BASICDEFS_H
+
+#if defined(_AIX)
+#pragma alloca
+#else
+# if !defined(alloca)           /* predefined by HP cc +Olibcalls */
+#  ifdef __GNUC__
+#   define alloca(size) __builtin_alloca(size)
+#  else
+#   if HAVE_ALLOCA_H
+#    include <alloca.h>
+#   else
+#    if defined(__hpux)
+        void *alloca ();
+#    else
+#     if !defined(__OS2__) && !defined(WIN32)
+	char *alloca ();
+#     else
+#      include <malloc.h>       /* OS/2 defines alloca in here */
+#     endif
+#    endif
+#   endif
+#  endif
+# endif
+#endif
+
+#ifdef HAVE_WCHAR_H
+# include <wchar.h>
+#endif
+#ifdef HAVE_LOCALE_H
+# include <locale.h>
+#endif
+#ifdef HAVE_WCTYPE_H
+# include <wctype.h>
+#endif
+
+
+#ifdef BOOTSTRAP
+# define false 0
+# define true 1
+# define bool unsigned
+# define __bool_true_false_are_defined 1
+#else
+# if HAVE_STDBOOL_H || defined(__HAIKU__) /* haiku/gcc2 hack */ 
+#  include <stdbool.h>
+# endif
+#endif
+
+#if ENABLE_NLS
+# include <libintl.h>
+#else
+# define gettext(msgid) (msgid)
+# define ngettext(sing, plur, n) ((n) == 1 ? (sing) : (plur))
+#endif
+#define _(String) gettext(String)
+
+#ifdef gettext_noop
+# define N_(String) gettext_noop(String)
+#else
+# define N_(String) (String)
+#endif
+
+/* type countT is used to keep track of line numbers, etc. */
+typedef unsigned long countT;
+
+/* Oftentimes casts are used as an ugly hack to silence warnings
+ * from the compiler.  However, sometimes those warnings really
+ * do point to something worth avoiding.  I define this
+ * dummy marker to make searching for them with a text editor
+ * much easier, in case I want to verify that they are all
+ * legitimate.  It is defined in the way it is so that it is
+ * easy to disable all casts so that the compiler (or lint)
+ * can tell me potentially interesting things about what would
+ * happen to the code without the explicit casts.
+ */
+#ifdef LOUD_LINT
+# define CAST(x)
+#else
+# define CAST(x) (x)
+#endif
+
+
+/* Can the compiler grok function prototypes? */
+#if (defined __STDC__ && __STDC__-0) || defined __GNUC__ || defined __SUNPRO_C || __PROTOTYPES
+# define P_(s)		s
+#else
+# define P_(s)		()
+#endif
+
+/* (VOID *) is the generic pointer type; some ancient compilers
+   don't know about (void *), and typically use (char *) instead.
+   VCAST() is used to cast to and from (VOID *)s --- but if the
+   compiler *does* support (void *) make this a no-op, so that
+   the compiler can detect if we omitted an essential function
+   declaration somewhere.
+ */
+#ifndef VOID
+# define VOID		void
+# define VCAST(t)	
+#else
+# define VCAST(t)	(t)
+#endif
+
+/* some basic definitions to avoid undue promulgating of VCAST ugliness */
+#define MALLOC(n,t)	 (VCAST(t *)ck_malloc((n)*sizeof(t)))
+#define REALLOC(x,n,t)	 (VCAST(t *)ck_realloc(VCAST(VOID *)(x),(n)*sizeof(t)))
+#define MEMDUP(x,n,t)	 (VCAST(t *)ck_memdup(VCAST(VOID *)(x),(n)*sizeof(t)))
+#define FREE(x)		 (ck_free(VCAST(VOID *)x))
+#define MEMCPY(d,s,l)	 (memcpy(VCAST(VOID *)(d),VCAST(const VOID *)(s),l))
+#define MEMMOVE(d,s,l)	 (memmove(VCAST(VOID *)(d),VCAST(const VOID *)(s),l))
+#define OB_MALLOC(o,n,t) (VCAST(t *)obstack_alloc(o,(n)*sizeof(t)))
+
+#define obstack_chunk_alloc  ck_malloc
+#define obstack_chunk_free   ck_free
+
+
+#ifdef HAVE_MEMORY_H
+# include <memory.h>
+#endif
+
+#ifndef HAVE_MEMMOVE
+# ifndef memmove
+   /* ../lib/libsed.a provides a memmove() if the system doesn't.
+      Here is where we declare its return type; we don't prototype
+      it because that sometimes causes problems when we're running in
+      bootstrap mode on a system which really does support memmove(). */
+   extern VOID *memmove();
+# endif
+#endif
+
+#ifndef HAVE_MEMCPY
+# ifndef memcpy
+#  define memcpy(d, s, n)	memmove(d, s, n)
+# endif
+#endif
+
+#ifndef HAVE_STRERROR
+ extern char *strerror P_((int e));
+#endif
+
+
+/* handle misdesigned <ctype.h> macros (snarfed from lib/regex.c) */
+/* Jim Meyering writes:
+
+   "... Some ctype macros are valid only for character codes that
+   isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
+   using /bin/cc or gcc but without giving an ansi option).  So, all
+   ctype uses should be through macros like ISPRINT...  If
+   STDC_HEADERS is defined, then autoconf has verified that the ctype
+   macros don't need to be guarded with references to isascii. ...
+   Defining isascii to 1 should let any compiler worth its salt
+   eliminate the && through constant folding."
+   Solaris defines some of these symbols so we must undefine them first. */
+
+#undef ISASCII
+#if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
+# define ISASCII(c) 1
+#else
+# define ISASCII(c) isascii(c)
+#endif
+
+#if defined isblank || defined HAVE_ISBLANK
+# define ISBLANK(c) (ISASCII (c) && isblank (c))
+#else
+# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
+#endif
+
+#undef ISPRINT
+#define ISPRINT(c) (ISASCII (c) && isprint (c))
+#define ISDIGIT(c) (ISASCII (c) && isdigit (c))
+#define ISALNUM(c) (ISASCII (c) && isalnum (c))
+#define ISALPHA(c) (ISASCII (c) && isalpha (c))
+#define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
+#define ISLOWER(c) (ISASCII (c) && islower (c))
+#define ISPUNCT(c) (ISASCII (c) && ispunct (c))
+#define ISSPACE(c) (ISASCII (c) && isspace (c))
+#define ISUPPER(c) (ISASCII (c) && isupper (c))
+#define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
+
+#ifndef initialize_main
+# ifdef __EMX__
+#  define initialize_main(argcp, argvp) \
+  { _response(argcp, argvp); _wildcard(argcp, argvp); }
+# else /* NOT __EMX__ */
+#  define initialize_main(argcp, argvp)
+# endif
+#endif
+
+#endif /*!BASICDEFS_H*/
diff --git a/src/sed/bootstrap.sh b/src/sed/bootstrap.sh
new file mode 100755
index 0000000..976893b
--- /dev/null
+++ b/src/sed/bootstrap.sh
@@ -0,0 +1,82 @@
+#! /bin/sh
+
+# edit this to taste; note that you can also override via the environment:
+case "$CC" in
+  "") CC=cc
+esac
+
+if test -f config.h; then :; else
+  echo "Creating basic config.h..."
+  cat >config.h <<'END_OF_CONFIG_H'
+/* A bootstrap version of config.h, for systems which can't
+   auto-configure due to a lack of a working sed.  If you are on
+   a sufficiently odd machine you may need to hand-tweak this file.
+
+   Regardless, once you get a working version of sed you really should
+   re-build starting with a run of "configure", as the bootstrap
+   version is almost certainly more crippled than it needs to be on
+   your machine.
+*/
+
+#define PACKAGE "sed"
+#define VERSION "4.1.5-boot"
+#define SED_FEATURE_VERSION "4.1"
+#define BOOTSTRAP 1
+
+/* Define if your compiler/headers don't support const. */
+#undef const
+
+/* Undefine if headers have conflicting definition.  */
+#define mbstate_t int
+
+/* Toggle if you encounter errors in lib/mkstemp.c.  */
+#define HAVE_UNISTD_H
+#define HAVE_FCNTL_H
+#undef HAVE_SYS_FILE_H
+#undef HAVE_IO_H
+
+/* Undefine if <stdio.h> or <sys/types.h> has conflicting definition.  */
+#define size_t unsigned
+#define ssize_t int
+
+/* If your antique compiler doesn't grok ``void *'', then #define VOID char */
+#undef VOID
+
+
+/* All other config.h.in options intentionally omitted.  Report as a
+   bug if you need extra "#define"s in here. */
+END_OF_CONFIG_H
+fi
+
+# tell the user what we're doing from here on...
+set -x -e
+
+# the ``|| exit 1''s are for fail-stop; set -e doesn't work on some systems
+
+rm -f lib/*.o sed/*.o sed/sed
+cd lib || exit 1
+rm -f regex.h
+cp regex_.h regex.h
+${CC} -DHAVE_CONFIG_H -I.. -I. -c alloca.c
+${CC} -DHAVE_CONFIG_H -I.. -I. -c getline.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c getopt.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c getopt1.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c memchr.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c memcmp.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c memmove.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c mkstemp.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c strverscmp.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c obstack.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c regex.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c strerror.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c utils.c || exit 1
+
+cd ../sed || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -I../lib -c sed.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -I../lib -c fmt.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -I../lib -c compile.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -I../lib -c execute.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -I../lib -c mbcs.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -I../lib -c regexp.c || exit 1
+
+${CC} -o sed *.o ../lib/*.o || exit 1
diff --git a/src/sed/bootstrap.sh.in b/src/sed/bootstrap.sh.in
new file mode 100755
index 0000000..82b2432
--- /dev/null
+++ b/src/sed/bootstrap.sh.in
@@ -0,0 +1,82 @@
+#! /bin/sh
+
+# edit this to taste; note that you can also override via the environment:
+case "$CC" in
+  "") CC=cc
+esac
+
+if test -f config.h; then :; else
+  echo "Creating basic config.h..."
+  cat >config.h <<'END_OF_CONFIG_H'
+/* A bootstrap version of config.h, for systems which can't
+   auto-configure due to a lack of a working sed.  If you are on
+   a sufficiently odd machine you may need to hand-tweak this file.
+
+   Regardless, once you get a working version of sed you really should
+   re-build starting with a run of "configure", as the bootstrap
+   version is almost certainly more crippled than it needs to be on
+   your machine.
+*/
+
+#define PACKAGE "sed"
+#define VERSION "@VERSION@-boot"
+#define SED_FEATURE_VERSION "@SED_FEATURE_VERSION@"
+#define BOOTSTRAP 1
+
+/* Define if your compiler/headers don't support const. */
+#undef const
+
+/* Undefine if headers have conflicting definition.  */
+#define mbstate_t int
+
+/* Toggle if you encounter errors in lib/mkstemp.c.  */
+#define HAVE_UNISTD_H
+#define HAVE_FCNTL_H
+#undef HAVE_SYS_FILE_H
+#undef HAVE_IO_H
+
+/* Undefine if <stdio.h> or <sys/types.h> has conflicting definition.  */
+#define size_t unsigned
+#define ssize_t int
+
+/* If your antique compiler doesn't grok ``void *'', then #define VOID char */
+#undef VOID
+
+
+/* All other config.h.in options intentionally omitted.  Report as a
+   bug if you need extra "#define"s in here. */
+END_OF_CONFIG_H
+fi
+
+# tell the user what we're doing from here on...
+set -x -e
+
+# the ``|| exit 1''s are for fail-stop; set -e doesn't work on some systems
+
+rm -f lib/*.o sed/*.o sed/sed
+cd lib || exit 1
+rm -f regex.h
+cp regex_.h regex.h
+${CC} -DHAVE_CONFIG_H -I.. -I. -c alloca.c
+${CC} -DHAVE_CONFIG_H -I.. -I. -c getline.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c getopt.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c getopt1.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c memchr.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c memcmp.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c memmove.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c mkstemp.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c strverscmp.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c obstack.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c regex.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c strerror.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -c utils.c || exit 1
+
+cd ../sed || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -I../lib -c sed.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -I../lib -c fmt.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -I../lib -c compile.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -I../lib -c execute.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -I../lib -c mbcs.c || exit 1
+${CC} -DHAVE_CONFIG_H -I.. -I. -I../lib -c regexp.c || exit 1
+
+${CC} -o sed *.o ../lib/*.o || exit 1
diff --git a/src/sed/config.h.darwin b/src/sed/config.h.darwin
new file mode 100644
index 0000000..a574898
--- /dev/null
+++ b/src/sed/config.h.darwin
@@ -0,0 +1,374 @@
+/* config.h.  Generated by configure.  */
+/* config_h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+/* #undef ENABLE_NLS */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+#define HAVE_ALLOCA_H 1
+
+/* Define to 1 if you have the <argz.h> header file. */
+/* #undef HAVE_ARGZ_H */
+
+/* Define to 1 if you have the `bcopy' function. */
+#define HAVE_BCOPY 1
+
+/* Define to 1 if you have the `btowc' function. */
+#define HAVE_BTOWC 1
+
+/* Define to 1 if you have the `bzero' function. */
+#define HAVE_BZERO 1
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+/* #undef HAVE_DOPRNT */
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the `fchmod' function. */
+#define HAVE_FCHMOD 1
+
+/* Define to 1 if you have the `fchown' function. */
+#define HAVE_FCHOWN 1
+
+/* Define to 1 if you have the `feof_unlocked' function. */
+#define HAVE_FEOF_UNLOCKED 1
+
+/* Define to 1 if you have the `fgets_unlocked' function. */
+/* #undef HAVE_FGETS_UNLOCKED */
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getc_unlocked' function. */
+#define HAVE_GETC_UNLOCKED 1
+
+/* Define to 1 if you have the `getegid' function. */
+#define HAVE_GETEGID 1
+
+/* Define to 1 if you have the `geteuid' function. */
+#define HAVE_GETEUID 1
+
+/* Define to 1 if you have the `getgid' function. */
+#define HAVE_GETGID 1
+
+/* Define to 1 if you have the `getpagesize' function. */
+#define HAVE_GETPAGESIZE 1
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+/* #undef HAVE_GETTEXT */
+
+/* Define to 1 if you have the `getuid' function. */
+#define HAVE_GETUID 1
+
+/* Define if you have the iconv() function. */
+#define HAVE_ICONV 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <io.h> header file. */
+/* #undef HAVE_IO_H */
+
+/* Define to 1 if you have the `isascii' function. */
+#define HAVE_ISASCII 1
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `isblank' function. */
+#define HAVE_ISBLANK 1
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+#define HAVE_LANGINFO_CODESET 1
+
+/* Define if your <locale.h> file defines LC_MESSAGES. */
+#define HAVE_LC_MESSAGES 1
+
+/* Define to 1 if you have the `regex' library (-lregex). */
+/* #undef HAVE_LIBREGEX */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you support file names longer than 14 characters. */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define to 1 if you have the <malloc.h> header file. */
+/* #undef HAVE_MALLOC_H */
+
+/* Define to 1 if mbrtowc and mbstate_t are properly declared. */
+#define HAVE_MBRTOWC 1
+
+/* Define to 1 if <wchar.h> declares mbstate_t. */
+#define HAVE_MBSTATE_T 1
+
+/* Define to 1 if you have the <mcheck.h> header file. */
+/* #undef HAVE_MCHECK_H */
+
+/* Define to 1 if you have the `memchr' function. */
+#define HAVE_MEMCHR 1
+
+/* Define to 1 if you have the `memcmp' function. */
+#define HAVE_MEMCMP 1
+
+/* Define to 1 if you have the `memcpy' function. */
+#define HAVE_MEMCPY 1
+
+/* Define to 1 if you have the `memmove' function. */
+#define HAVE_MEMMOVE 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mempcpy' function. */
+/* #undef HAVE_MEMPCPY */
+
+/* Define to 1 if you have the `memset' function. */
+#define HAVE_MEMSET 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have a working `mmap' system call. */
+#define HAVE_MMAP 1
+
+/* Define to 1 if you have the `munmap' function. */
+#define HAVE_MUNMAP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nl_types.h> header file. */
+#define HAVE_NL_TYPES_H 1
+
+/* Define to 1 if libc includes obstacks. */
+/* #undef HAVE_OBSTACK */
+
+/* Define to 1 if you have the `pathconf' function. */
+#define HAVE_PATHCONF 1
+
+/* Define to 1 if you have the `popen' function. */
+#define HAVE_POPEN 1
+
+/* Define to 1 if you have the `putenv' function. */
+#define HAVE_PUTENV 1
+
+/* Define to 1 if you have the <regex.h> header file. */
+/* #undef HAVE_REGEX_H */
+
+/* Define to 1 if you have the `setenv' function. */
+#define HAVE_SETENV 1
+
+/* Define to 1 if you have the `setlocale' function. */
+#define HAVE_SETLOCALE 1
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if stdbool.h conforms to C99. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stddef.h> header file. */
+#define HAVE_STDDEF_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `stpcpy' function. */
+#define HAVE_STPCPY 1
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strchr' function. */
+#define HAVE_STRCHR 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strtoul' function. */
+#define HAVE_STRTOUL 1
+
+/* Define to 1 if you have the `strverscmp' function. */
+/* #undef HAVE_STRVERSCMP */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/file.h> header file. */
+#define HAVE_SYS_FILE_H 1
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the `tsearch' function. */
+#define HAVE_TSEARCH 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#define HAVE_WCHAR_H 1
+
+/* Define to 1 if you have the `wcrtomb' function. */
+#define HAVE_WCRTOMB 1
+
+/* Define to 1 if you have the `wcscoll' function. */
+#define HAVE_WCSCOLL 1
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#define HAVE_WCTYPE_H 1
+
+/* Define to 1 if the system has the type `_Bool'. */
+#define HAVE__BOOL 1
+
+/* Define to 1 if you have the `__argz_count' function. */
+/* #undef HAVE___ARGZ_COUNT */
+
+/* Define to 1 if you have the `__argz_next' function. */
+/* #undef HAVE___ARGZ_NEXT */
+
+/* Define to 1 if you have the `__argz_stringify' function. */
+/* #undef HAVE___ARGZ_STRINGIFY */
+
+/* Define as const if the declaration of iconv() needs const. */
+#define ICONV_CONST const
+
+/* Name of package */
+#define PACKAGE "sed"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bonzini@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "sed"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "sed 4.1.5"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "sed"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "4.1.5"
+
+/* Define to the version of GNU sed whose features are supported by this sed.
+   */
+#define SED_FEATURE_VERSION "4.1"
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "4.1.5"
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Include BSD functions in regex, used by the testsuite */
+#define _REGEX_RE_COMP 1
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+/* #undef inline */
+#endif
+
+/* Define to a type if <wchar.h> does not define. */
+/* #undef mbstate_t */
+
+/* Define to `long' if <sys/types.h> does not define. */
+/* #undef off_t */
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef ssize_t */
diff --git a/src/sed/config.h.freebsd b/src/sed/config.h.freebsd
new file mode 100644
index 0000000..8d33053
--- /dev/null
+++ b/src/sed/config.h.freebsd
@@ -0,0 +1,374 @@
+/* config.h.  Generated by configure.  */
+/* config_h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+/* #undef ENABLE_NLS */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define to 1 if you have the <argz.h> header file. */
+/* #undef HAVE_ARGZ_H */
+
+/* Define to 1 if you have the `bcopy' function. */
+#define HAVE_BCOPY 1
+
+/* Define to 1 if you have the `btowc' function. */
+#define HAVE_BTOWC 1
+
+/* Define to 1 if you have the `bzero' function. */
+#define HAVE_BZERO 1
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+/* #undef HAVE_DOPRNT */
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the `fchmod' function. */
+#define HAVE_FCHMOD 1
+
+/* Define to 1 if you have the `fchown' function. */
+#define HAVE_FCHOWN 1
+
+/* Define to 1 if you have the `feof_unlocked' function. */
+#define HAVE_FEOF_UNLOCKED 1
+
+/* Define to 1 if you have the `fgets_unlocked' function. */
+/* #undef HAVE_FGETS_UNLOCKED */
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getc_unlocked' function. */
+#define HAVE_GETC_UNLOCKED 1
+
+/* Define to 1 if you have the `getegid' function. */
+#define HAVE_GETEGID 1
+
+/* Define to 1 if you have the `geteuid' function. */
+#define HAVE_GETEUID 1
+
+/* Define to 1 if you have the `getgid' function. */
+#define HAVE_GETGID 1
+
+/* Define to 1 if you have the `getpagesize' function. */
+#define HAVE_GETPAGESIZE 1
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+/* #undef HAVE_GETTEXT */
+
+/* Define to 1 if you have the `getuid' function. */
+#define HAVE_GETUID 1
+
+/* Define if you have the iconv() function. */
+#define HAVE_ICONV 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <io.h> header file. */
+/* #undef HAVE_IO_H */
+
+/* Define to 1 if you have the `isascii' function. */
+#define HAVE_ISASCII 1
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `isblank' function. */
+#define HAVE_ISBLANK 1
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+#define HAVE_LANGINFO_CODESET 1
+
+/* Define if your <locale.h> file defines LC_MESSAGES. */
+#define HAVE_LC_MESSAGES 1
+
+/* Define to 1 if you have the `regex' library (-lregex). */
+/* #undef HAVE_LIBREGEX */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you support file names longer than 14 characters. */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define to 1 if you have the <malloc.h> header file. */
+/* #undef HAVE_MALLOC_H */
+
+/* Define to 1 if mbrtowc and mbstate_t are properly declared. */
+#define HAVE_MBRTOWC 1
+
+/* Define to 1 if <wchar.h> declares mbstate_t. */
+#define HAVE_MBSTATE_T 1
+
+/* Define to 1 if you have the <mcheck.h> header file. */
+/* #undef HAVE_MCHECK_H */
+
+/* Define to 1 if you have the `memchr' function. */
+#define HAVE_MEMCHR 1
+
+/* Define to 1 if you have the `memcmp' function. */
+#define HAVE_MEMCMP 1
+
+/* Define to 1 if you have the `memcpy' function. */
+#define HAVE_MEMCPY 1
+
+/* Define to 1 if you have the `memmove' function. */
+#define HAVE_MEMMOVE 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mempcpy' function. */
+/* #undef HAVE_MEMPCPY */
+
+/* Define to 1 if you have the `memset' function. */
+#define HAVE_MEMSET 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have a working `mmap' system call. */
+#define HAVE_MMAP 1
+
+/* Define to 1 if you have the `munmap' function. */
+#define HAVE_MUNMAP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nl_types.h> header file. */
+#define HAVE_NL_TYPES_H 1
+
+/* Define to 1 if libc includes obstacks. */
+/* #undef HAVE_OBSTACK */
+
+/* Define to 1 if you have the `pathconf' function. */
+#define HAVE_PATHCONF 1
+
+/* Define to 1 if you have the `popen' function. */
+#define HAVE_POPEN 1
+
+/* Define to 1 if you have the `putenv' function. */
+#define HAVE_PUTENV 1
+
+/* Define to 1 if you have the <regex.h> header file. */
+/* #undef HAVE_REGEX_H */
+
+/* Define to 1 if you have the `setenv' function. */
+#define HAVE_SETENV 1
+
+/* Define to 1 if you have the `setlocale' function. */
+#define HAVE_SETLOCALE 1
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if stdbool.h conforms to C99. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stddef.h> header file. */
+#define HAVE_STDDEF_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `stpcpy' function. */
+#define HAVE_STPCPY 1
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strchr' function. */
+#define HAVE_STRCHR 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strtoul' function. */
+#define HAVE_STRTOUL 1
+
+/* Define to 1 if you have the `strverscmp' function. */
+/* #undef HAVE_STRVERSCMP */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/file.h> header file. */
+#define HAVE_SYS_FILE_H 1
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the `tsearch' function. */
+#define HAVE_TSEARCH 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#define HAVE_WCHAR_H 1
+
+/* Define to 1 if you have the `wcrtomb' function. */
+#define HAVE_WCRTOMB 1
+
+/* Define to 1 if you have the `wcscoll' function. */
+#define HAVE_WCSCOLL 1
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#define HAVE_WCTYPE_H 1
+
+/* Define to 1 if the system has the type `_Bool'. */
+#define HAVE__BOOL 1
+
+/* Define to 1 if you have the `__argz_count' function. */
+/* #undef HAVE___ARGZ_COUNT */
+
+/* Define to 1 if you have the `__argz_next' function. */
+/* #undef HAVE___ARGZ_NEXT */
+
+/* Define to 1 if you have the `__argz_stringify' function. */
+/* #undef HAVE___ARGZ_STRINGIFY */
+
+/* Define as const if the declaration of iconv() needs const. */
+#define ICONV_CONST const
+
+/* Name of package */
+#define PACKAGE "sed"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bonzini@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "sed"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "sed 4.1.5"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "sed"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "4.1.5"
+
+/* Define to the version of GNU sed whose features are supported by this sed.
+   */
+#define SED_FEATURE_VERSION "4.1"
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "4.1.5"
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Include BSD functions in regex, used by the testsuite */
+#define _REGEX_RE_COMP 1
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+/* #undef inline */
+#endif
+
+/* Define to a type if <wchar.h> does not define. */
+/* #undef mbstate_t */
+
+/* Define to `long' if <sys/types.h> does not define. */
+/* #undef off_t */
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef ssize_t */
diff --git a/src/sed/config.h.haiku b/src/sed/config.h.haiku
new file mode 100644
index 0000000..a925451
--- /dev/null
+++ b/src/sed/config.h.haiku
@@ -0,0 +1,471 @@
+/* config.h.  Generated from config_h.in by configure.  */
+/* config_h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+/* #undef ENABLE_NLS */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+#define HAVE_ALLOCA_H 1
+
+/* Define to 1 if you have the <argz.h> header file. */
+/* #undef HAVE_ARGZ_H */
+
+/* Define to 1 if you have the `asprintf' function. */
+#define HAVE_ASPRINTF 1
+
+/* Define to 1 if you have the `bcopy' function. */
+#define HAVE_BCOPY 1
+
+/* Define to 1 if you have the `btowc' function. */
+#define HAVE_BTOWC 1
+
+/* Define to 1 if you have the `bzero' function. */
+#define HAVE_BZERO 1
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define to 1 if you have the declaration of `feof_unlocked', and to 0 if you
+   don't. */
+#define HAVE_DECL_FEOF_UNLOCKED 1
+
+/* Define to 1 if you have the declaration of `fgets_unlocked', and to 0 if
+   you don't. */
+#define HAVE_DECL_FGETS_UNLOCKED 0
+
+/* Define to 1 if you have the declaration of `getc_unlocked', and to 0 if you
+   don't. */
+#define HAVE_DECL_GETC_UNLOCKED 1
+
+/* Define to 1 if you have the declaration of `_snprintf', and to 0 if you
+   don't. */
+#define HAVE_DECL__SNPRINTF 0
+
+/* Define to 1 if you have the declaration of `_snwprintf', and to 0 if you
+   don't. */
+#define HAVE_DECL__SNWPRINTF 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+/* #undef HAVE_DOPRNT */
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the `fchmod' function. */
+#define HAVE_FCHMOD 1
+
+/* Define to 1 if you have the `fchown' function. */
+#define HAVE_FCHOWN 1
+
+/* Define to 1 if you have the `fwprintf' function. */
+#define HAVE_FWPRINTF 1
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getegid' function. */
+#define HAVE_GETEGID 1
+
+/* Define to 1 if you have the `geteuid' function. */
+#define HAVE_GETEUID 1
+
+/* Define to 1 if you have the `getgid' function. */
+#define HAVE_GETGID 1
+
+/* Define to 1 if you have the `getpagesize' function. */
+#define HAVE_GETPAGESIZE 1
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+/* #undef HAVE_GETTEXT */
+
+/* Define to 1 if you have the `getuid' function. */
+#define HAVE_GETUID 1
+
+/* Define if you have the iconv() function. */
+#define HAVE_ICONV 1
+
+/* Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>. */
+#define HAVE_INTMAX_T 1
+
+/* Define if <inttypes.h> exists and doesn't clash with <sys/types.h>. */
+#define HAVE_INTTYPES_H 1
+
+/* Define if <inttypes.h> exists, doesn't clash with <sys/types.h>, and
+   declares uintmax_t. */
+#define HAVE_INTTYPES_H_WITH_UINTMAX 1
+
+/* Define to 1 if you have the <io.h> header file. */
+/* #undef HAVE_IO_H */
+
+/* Define to 1 if you have the `isascii' function. */
+#define HAVE_ISASCII 1
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `isblank' function. */
+#define HAVE_ISBLANK 1
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+#define HAVE_LANGINFO_CODESET 1
+
+/* Define if your <locale.h> file defines LC_MESSAGES. */
+#define HAVE_LC_MESSAGES 1
+
+/* Define to 1 if you have the `regex' library (-lregex). */
+/* #undef HAVE_LIBREGEX */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define if you have the 'long double' type. */
+#define HAVE_LONG_DOUBLE 1
+
+/* Define to 1 if you support file names longer than 14 characters. */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define if you have the 'long long' type. */
+#define HAVE_LONG_LONG 1
+
+/* Define to 1 if you have the <malloc.h> header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if mbrtowc and mbstate_t are properly declared. */
+#define HAVE_MBRTOWC 1
+
+/* Define to 1 if <wchar.h> declares mbstate_t. */
+#define HAVE_MBSTATE_T 1
+
+/* Define to 1 if you have the <mcheck.h> header file. */
+/* #undef HAVE_MCHECK_H */
+
+/* Define to 1 if you have the `memchr' function. */
+#define HAVE_MEMCHR 1
+
+/* Define to 1 if you have the `memcmp' function. */
+#define HAVE_MEMCMP 1
+
+/* Define to 1 if you have the `memcpy' function. */
+#define HAVE_MEMCPY 1
+
+/* Define to 1 if you have the `memmove' function. */
+#define HAVE_MEMMOVE 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mempcpy' function. */
+/* #undef HAVE_MEMPCPY */
+
+/* Define to 1 if you have the `memset' function. */
+#define HAVE_MEMSET 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have a working `mmap' system call. */
+#define HAVE_MMAP 1
+
+/* Define to 1 if you have the `munmap' function. */
+#define HAVE_MUNMAP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nl_types.h> header file. */
+#define HAVE_NL_TYPES_H 1
+
+/* Define to 1 if libc includes obstacks. */
+/* #undef HAVE_OBSTACK */
+
+/* Define to 1 if you have the `pathconf' function. */
+#define HAVE_PATHCONF 1
+
+/* Define to 1 if you have the `popen' function. */
+#define HAVE_POPEN 1
+
+/* Define if your printf() function supports format strings with positions. */
+#define HAVE_POSIX_PRINTF 1
+
+/* Define to 1 if you have the `putenv' function. */
+#define HAVE_PUTENV 1
+
+/* Define to 1 if you have the <regex.h> header file. */
+/* #undef HAVE_REGEX_H */
+
+/* Define to 1 if you have the `setenv' function. */
+#define HAVE_SETENV 1
+
+/* Define to 1 if you have the `setlocale' function. */
+#define HAVE_SETLOCALE 1
+
+/* Define to 1 if you have the `snprintf' function. */
+#define HAVE_SNPRINTF 1
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if stdbool.h conforms to C99. */
+/* #undef HAVE_STDBOOL_H */
+
+/* Define to 1 if you have the <stddef.h> header file. */
+#define HAVE_STDDEF_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define if <stdint.h> exists, doesn't clash with <sys/types.h>, and declares
+   uintmax_t. */
+#define HAVE_STDINT_H_WITH_UINTMAX 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `stpcpy' function. */
+#define HAVE_STPCPY 1
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strchr' function. */
+#define HAVE_STRCHR 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strtoul' function. */
+#define HAVE_STRTOUL 1
+
+/* Define to 1 if you have the `strverscmp' function. */
+/* #undef HAVE_STRVERSCMP */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/file.h> header file. */
+#define HAVE_SYS_FILE_H 1
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the `tsearch' function. */
+#define HAVE_TSEARCH 1
+
+/* Define if you have the 'uintmax_t' type in <stdint.h> or <inttypes.h>. */
+#define HAVE_UINTMAX_T 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define if you have the 'unsigned long long' type. */
+#define HAVE_UNSIGNED_LONG_LONG 1
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#define HAVE_WCHAR_H 1
+
+/* Define if you have the 'wchar_t' type. */
+#define HAVE_WCHAR_T 1
+
+/* Define to 1 if you have the `wcrtomb' function. */
+#define HAVE_WCRTOMB 1
+
+/* Define to 1 if you have the `wcscoll' function. */
+#define HAVE_WCSCOLL 1
+
+/* Define to 1 if you have the `wcslen' function. */
+#define HAVE_WCSLEN 1
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#define HAVE_WCTYPE_H 1
+
+/* Define if you have the 'wint_t' type. */
+#define HAVE_WINT_T 1
+
+/* Define to 1 if the system has the type `_Bool'. */
+/* #undef HAVE__BOOL */
+
+/* Define to 1 if you have the `__argz_count' function. */
+/* #undef HAVE___ARGZ_COUNT */
+
+/* Define to 1 if you have the `__argz_next' function. */
+/* #undef HAVE___ARGZ_NEXT */
+
+/* Define to 1 if you have the `__argz_stringify' function. */
+/* #undef HAVE___ARGZ_STRINGIFY */
+
+/* Define to 1 if you have the `__fsetlocking' function. */
+#define HAVE___FSETLOCKING 1
+
+/* Define as const if the declaration of iconv() needs const. */
+#define ICONV_CONST 
+
+/* Define if integer division by zero raises signal SIGFPE. */
+#define INTDIV0_RAISES_SIGFPE 1
+
+/* Name of package */
+#define PACKAGE "sed"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bonzini@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "sed"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "sed 4.1.5"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "sed"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "4.1.5"
+
+/* Define if <inttypes.h> exists and defines unusable PRI* macros. */
+/* #undef PRI_MACROS_BROKEN */
+
+/* Define to the version of GNU sed whose features are supported by this sed.
+   */
+#define SED_FEATURE_VERSION "4.1"
+
+/* Define as the maximum value of type 'size_t', if the system doesn't define
+   it. */
+/* #undef SIZE_MAX */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at runtime.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# define _ALL_SOURCE 1
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# define _POSIX_PTHREAD_SEMANTICS 1
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# define _TANDEM_SOURCE 1
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# define __EXTENSIONS__ 1
+#endif
+
+
+/* Version number of package */
+#define VERSION "4.1.5"
+
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Include BSD functions in regex, used by the testsuite */
+#define _REGEX_RE_COMP 1
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+/* #undef inline */
+#endif
+
+/* Define to a type if <wchar.h> does not define. */
+/* #undef mbstate_t */
+
+/* Define to `long int' if <sys/types.h> does not define. */
+/* #undef off_t */
+
+/* Define as the type of the result of subtracting two pointers, if the system
+   doesn't define it. */
+/* #undef ptrdiff_t */
+
+/* Define to empty if the C compiler doesn't support this keyword. */
+/* #undef signed */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef ssize_t */
+
+/* Define to unsigned long or unsigned long long if <stdint.h> and
+   <inttypes.h> don't define. */
+/* #undef uintmax_t */
diff --git a/src/sed/config.h.linux b/src/sed/config.h.linux
new file mode 100644
index 0000000..216eb66
--- /dev/null
+++ b/src/sed/config.h.linux
@@ -0,0 +1,374 @@
+/* config.h.  Generated by configure.  */
+/* config_h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+/* #undef ENABLE_NLS */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+#define HAVE_ALLOCA_H 1
+
+/* Define to 1 if you have the <argz.h> header file. */
+#define HAVE_ARGZ_H 1
+
+/* Define to 1 if you have the `bcopy' function. */
+#define HAVE_BCOPY 1
+
+/* Define to 1 if you have the `btowc' function. */
+#define HAVE_BTOWC 1
+
+/* Define to 1 if you have the `bzero' function. */
+#define HAVE_BZERO 1
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+/* #undef HAVE_DOPRNT */
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the `fchmod' function. */
+#define HAVE_FCHMOD 1
+
+/* Define to 1 if you have the `fchown' function. */
+#define HAVE_FCHOWN 1
+
+/* Define to 1 if you have the `feof_unlocked' function. */
+#define HAVE_FEOF_UNLOCKED 1
+
+/* Define to 1 if you have the `fgets_unlocked' function. */
+#define HAVE_FGETS_UNLOCKED 1
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getc_unlocked' function. */
+#define HAVE_GETC_UNLOCKED 1
+
+/* Define to 1 if you have the `getegid' function. */
+#define HAVE_GETEGID 1
+
+/* Define to 1 if you have the `geteuid' function. */
+#define HAVE_GETEUID 1
+
+/* Define to 1 if you have the `getgid' function. */
+#define HAVE_GETGID 1
+
+/* Define to 1 if you have the `getpagesize' function. */
+#define HAVE_GETPAGESIZE 1
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+/* #undef HAVE_GETTEXT */
+
+/* Define to 1 if you have the `getuid' function. */
+#define HAVE_GETUID 1
+
+/* Define if you have the iconv() function. */
+#define HAVE_ICONV 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <io.h> header file. */
+/* #undef HAVE_IO_H */
+
+/* Define to 1 if you have the `isascii' function. */
+#define HAVE_ISASCII 1
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `isblank' function. */
+#define HAVE_ISBLANK 1
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+#define HAVE_LANGINFO_CODESET 1
+
+/* Define if your <locale.h> file defines LC_MESSAGES. */
+#define HAVE_LC_MESSAGES 1
+
+/* Define to 1 if you have the `regex' library (-lregex). */
+/* #undef HAVE_LIBREGEX */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you support file names longer than 14 characters. */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define to 1 if you have the <malloc.h> header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if mbrtowc and mbstate_t are properly declared. */
+#define HAVE_MBRTOWC 1
+
+/* Define to 1 if <wchar.h> declares mbstate_t. */
+#define HAVE_MBSTATE_T 1
+
+/* Define to 1 if you have the <mcheck.h> header file. */
+#define HAVE_MCHECK_H 1
+
+/* Define to 1 if you have the `memchr' function. */
+#define HAVE_MEMCHR 1
+
+/* Define to 1 if you have the `memcmp' function. */
+#define HAVE_MEMCMP 1
+
+/* Define to 1 if you have the `memcpy' function. */
+#define HAVE_MEMCPY 1
+
+/* Define to 1 if you have the `memmove' function. */
+#define HAVE_MEMMOVE 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mempcpy' function. */
+#define HAVE_MEMPCPY 1
+
+/* Define to 1 if you have the `memset' function. */
+#define HAVE_MEMSET 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have a working `mmap' system call. */
+#define HAVE_MMAP 1
+
+/* Define to 1 if you have the `munmap' function. */
+#define HAVE_MUNMAP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nl_types.h> header file. */
+#define HAVE_NL_TYPES_H 1
+
+/* Define to 1 if libc includes obstacks. */
+#define HAVE_OBSTACK 1
+
+/* Define to 1 if you have the `pathconf' function. */
+#define HAVE_PATHCONF 1
+
+/* Define to 1 if you have the `popen' function. */
+#define HAVE_POPEN 1
+
+/* Define to 1 if you have the `putenv' function. */
+#define HAVE_PUTENV 1
+
+/* Define to 1 if you have the <regex.h> header file. */
+/* #undef HAVE_REGEX_H */
+
+/* Define to 1 if you have the `setenv' function. */
+#define HAVE_SETENV 1
+
+/* Define to 1 if you have the `setlocale' function. */
+#define HAVE_SETLOCALE 1
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if stdbool.h conforms to C99. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stddef.h> header file. */
+#define HAVE_STDDEF_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `stpcpy' function. */
+#define HAVE_STPCPY 1
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strchr' function. */
+#define HAVE_STRCHR 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strtoul' function. */
+#define HAVE_STRTOUL 1
+
+/* Define to 1 if you have the `strverscmp' function. */
+#define HAVE_STRVERSCMP 1
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/file.h> header file. */
+#define HAVE_SYS_FILE_H 1
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the `tsearch' function. */
+#define HAVE_TSEARCH 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#define HAVE_WCHAR_H 1
+
+/* Define to 1 if you have the `wcrtomb' function. */
+#define HAVE_WCRTOMB 1
+
+/* Define to 1 if you have the `wcscoll' function. */
+#define HAVE_WCSCOLL 1
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#define HAVE_WCTYPE_H 1
+
+/* Define to 1 if the system has the type `_Bool'. */
+#define HAVE__BOOL 1
+
+/* Define to 1 if you have the `__argz_count' function. */
+#define HAVE___ARGZ_COUNT 1
+
+/* Define to 1 if you have the `__argz_next' function. */
+#define HAVE___ARGZ_NEXT 1
+
+/* Define to 1 if you have the `__argz_stringify' function. */
+#define HAVE___ARGZ_STRINGIFY 1
+
+/* Define as const if the declaration of iconv() needs const. */
+#define ICONV_CONST 
+
+/* Name of package */
+#define PACKAGE "sed"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bonzini@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "sed"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "sed 4.1.5"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "sed"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "4.1.5"
+
+/* Define to the version of GNU sed whose features are supported by this sed.
+   */
+#define SED_FEATURE_VERSION "4.1"
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "4.1.5"
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#define _FILE_OFFSET_BITS 64
+
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Include BSD functions in regex, used by the testsuite */
+#define _REGEX_RE_COMP 1
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+/* #undef inline */
+#endif
+
+/* Define to a type if <wchar.h> does not define. */
+/* #undef mbstate_t */
+
+/* Define to `long' if <sys/types.h> does not define. */
+/* #undef off_t */
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef ssize_t */
diff --git a/src/sed/config.h.netbsd b/src/sed/config.h.netbsd
new file mode 100755
index 0000000..568e886
--- /dev/null
+++ b/src/sed/config.h.netbsd
@@ -0,0 +1,471 @@
+/* config.h.  Generated from config_h.in by configure.  */
+/* config_h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+/* #undef ENABLE_NLS */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define to 1 if you have the <argz.h> header file. */
+/* #undef HAVE_ARGZ_H */
+
+/* Define to 1 if you have the `asprintf' function. */
+#define HAVE_ASPRINTF 1
+
+/* Define to 1 if you have the `bcopy' function. */
+#define HAVE_BCOPY 1
+
+/* Define to 1 if you have the `btowc' function. */
+#define HAVE_BTOWC 1
+
+/* Define to 1 if you have the `bzero' function. */
+#define HAVE_BZERO 1
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define to 1 if you have the declaration of `feof_unlocked', and to 0 if you
+   don't. */
+#define HAVE_DECL_FEOF_UNLOCKED 0
+
+/* Define to 1 if you have the declaration of `fgets_unlocked', and to 0 if
+   you don't. */
+#define HAVE_DECL_FGETS_UNLOCKED 0
+
+/* Define to 1 if you have the declaration of `getc_unlocked', and to 0 if you
+   don't. */
+#define HAVE_DECL_GETC_UNLOCKED 1
+
+/* Define to 1 if you have the declaration of `_snprintf', and to 0 if you
+   don't. */
+#define HAVE_DECL__SNPRINTF 0
+
+/* Define to 1 if you have the declaration of `_snwprintf', and to 0 if you
+   don't. */
+#define HAVE_DECL__SNWPRINTF 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+/* #undef HAVE_DOPRNT */
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the `fchmod' function. */
+#define HAVE_FCHMOD 1
+
+/* Define to 1 if you have the `fchown' function. */
+#define HAVE_FCHOWN 1
+
+/* Define to 1 if you have the `fwprintf' function. */
+#define HAVE_FWPRINTF 1
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getegid' function. */
+#define HAVE_GETEGID 1
+
+/* Define to 1 if you have the `geteuid' function. */
+#define HAVE_GETEUID 1
+
+/* Define to 1 if you have the `getgid' function. */
+#define HAVE_GETGID 1
+
+/* Define to 1 if you have the `getpagesize' function. */
+#define HAVE_GETPAGESIZE 1
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+/* #undef HAVE_GETTEXT */
+
+/* Define to 1 if you have the `getuid' function. */
+#define HAVE_GETUID 1
+
+/* Define if you have the iconv() function. */
+#define HAVE_ICONV 1
+
+/* Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>. */
+#define HAVE_INTMAX_T 1
+
+/* Define if <inttypes.h> exists and doesn't clash with <sys/types.h>. */
+#define HAVE_INTTYPES_H 1
+
+/* Define if <inttypes.h> exists, doesn't clash with <sys/types.h>, and
+   declares uintmax_t. */
+#define HAVE_INTTYPES_H_WITH_UINTMAX 1
+
+/* Define to 1 if you have the <io.h> header file. */
+/* #undef HAVE_IO_H */
+
+/* Define to 1 if you have the `isascii' function. */
+#define HAVE_ISASCII 1
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `isblank' function. */
+#define HAVE_ISBLANK 1
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+#define HAVE_LANGINFO_CODESET 1
+
+/* Define if your <locale.h> file defines LC_MESSAGES. */
+#define HAVE_LC_MESSAGES 1
+
+/* Define to 1 if you have the `regex' library (-lregex). */
+/* #undef HAVE_LIBREGEX */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define if you have the 'long double' type. */
+#define HAVE_LONG_DOUBLE 1
+
+/* Define to 1 if you support file names longer than 14 characters. */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define if you have the 'long long' type. */
+#define HAVE_LONG_LONG 1
+
+/* Define to 1 if you have the <malloc.h> header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if mbrtowc and mbstate_t are properly declared. */
+#define HAVE_MBRTOWC 1
+
+/* Define to 1 if <wchar.h> declares mbstate_t. */
+#define HAVE_MBSTATE_T 1
+
+/* Define to 1 if you have the <mcheck.h> header file. */
+/* #undef HAVE_MCHECK_H */
+
+/* Define to 1 if you have the `memchr' function. */
+#define HAVE_MEMCHR 1
+
+/* Define to 1 if you have the `memcmp' function. */
+#define HAVE_MEMCMP 1
+
+/* Define to 1 if you have the `memcpy' function. */
+#define HAVE_MEMCPY 1
+
+/* Define to 1 if you have the `memmove' function. */
+#define HAVE_MEMMOVE 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mempcpy' function. */
+/* #undef HAVE_MEMPCPY */
+
+/* Define to 1 if you have the `memset' function. */
+#define HAVE_MEMSET 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have a working `mmap' system call. */
+#define HAVE_MMAP 1
+
+/* Define to 1 if you have the `munmap' function. */
+#define HAVE_MUNMAP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nl_types.h> header file. */
+#define HAVE_NL_TYPES_H 1
+
+/* Define to 1 if libc includes obstacks. */
+/* #undef HAVE_OBSTACK */
+
+/* Define to 1 if you have the `pathconf' function. */
+#define HAVE_PATHCONF 1
+
+/* Define to 1 if you have the `popen' function. */
+#define HAVE_POPEN 1
+
+/* Define if your printf() function supports format strings with positions. */
+#define HAVE_POSIX_PRINTF 1
+
+/* Define to 1 if you have the `putenv' function. */
+#define HAVE_PUTENV 1
+
+/* Define to 1 if you have the <regex.h> header file. */
+/* #undef HAVE_REGEX_H */
+
+/* Define to 1 if you have the `setenv' function. */
+#define HAVE_SETENV 1
+
+/* Define to 1 if you have the `setlocale' function. */
+#define HAVE_SETLOCALE 1
+
+/* Define to 1 if you have the `snprintf' function. */
+#define HAVE_SNPRINTF 1
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if stdbool.h conforms to C99. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stddef.h> header file. */
+#define HAVE_STDDEF_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define if <stdint.h> exists, doesn't clash with <sys/types.h>, and declares
+   uintmax_t. */
+#define HAVE_STDINT_H_WITH_UINTMAX 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `stpcpy' function. */
+/* #undef HAVE_STPCPY */
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strchr' function. */
+#define HAVE_STRCHR 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strtoul' function. */
+#define HAVE_STRTOUL 1
+
+/* Define to 1 if you have the `strverscmp' function. */
+/* #undef HAVE_STRVERSCMP */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/file.h> header file. */
+#define HAVE_SYS_FILE_H 1
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the `tsearch' function. */
+#define HAVE_TSEARCH 1
+
+/* Define if you have the 'uintmax_t' type in <stdint.h> or <inttypes.h>. */
+#define HAVE_UINTMAX_T 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define if you have the 'unsigned long long' type. */
+#define HAVE_UNSIGNED_LONG_LONG 1
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#define HAVE_WCHAR_H 1
+
+/* Define if you have the 'wchar_t' type. */
+#define HAVE_WCHAR_T 1
+
+/* Define to 1 if you have the `wcrtomb' function. */
+#define HAVE_WCRTOMB 1
+
+/* Define to 1 if you have the `wcscoll' function. */
+#define HAVE_WCSCOLL 1
+
+/* Define to 1 if you have the `wcslen' function. */
+#define HAVE_WCSLEN 1
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#define HAVE_WCTYPE_H 1
+
+/* Define if you have the 'wint_t' type. */
+#define HAVE_WINT_T 1
+
+/* Define to 1 if the system has the type `_Bool'. */
+#define HAVE__BOOL 1
+
+/* Define to 1 if you have the `__argz_count' function. */
+/* #undef HAVE___ARGZ_COUNT */
+
+/* Define to 1 if you have the `__argz_next' function. */
+/* #undef HAVE___ARGZ_NEXT */
+
+/* Define to 1 if you have the `__argz_stringify' function. */
+/* #undef HAVE___ARGZ_STRINGIFY */
+
+/* Define to 1 if you have the `__fsetlocking' function. */
+/* #undef HAVE___FSETLOCKING */
+
+/* Define as const if the declaration of iconv() needs const. */
+#define ICONV_CONST const
+
+/* Define if integer division by zero raises signal SIGFPE. */
+#define INTDIV0_RAISES_SIGFPE 1
+
+/* Name of package */
+#define PACKAGE "sed"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bonzini@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "sed"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "sed 4.1.5"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "sed"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "4.1.5"
+
+/* Define if <inttypes.h> exists and defines unusable PRI* macros. */
+/* #undef PRI_MACROS_BROKEN */
+
+/* Define to the version of GNU sed whose features are supported by this sed.
+   */
+#define SED_FEATURE_VERSION "4.1"
+
+/* Define as the maximum value of type 'size_t', if the system doesn't define
+   it. */
+/* #undef SIZE_MAX */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at runtime.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# define _ALL_SOURCE 1
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# define _POSIX_PTHREAD_SEMANTICS 1
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# define _TANDEM_SOURCE 1
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# define __EXTENSIONS__ 1
+#endif
+
+
+/* Version number of package */
+#define VERSION "4.1.5"
+
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Include BSD functions in regex, used by the testsuite */
+#define _REGEX_RE_COMP 1
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+/* #undef inline */
+#endif
+
+/* Define to a type if <wchar.h> does not define. */
+/* #undef mbstate_t */
+
+/* Define to `long int' if <sys/types.h> does not define. */
+/* #undef off_t */
+
+/* Define as the type of the result of subtracting two pointers, if the system
+   doesn't define it. */
+/* #undef ptrdiff_t */
+
+/* Define to empty if the C compiler doesn't support this keyword. */
+/* #undef signed */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef ssize_t */
+
+/* Define to unsigned long or unsigned long long if <stdint.h> and
+   <inttypes.h> don't define. */
+/* #undef uintmax_t */
diff --git a/src/sed/config.h.os2 b/src/sed/config.h.os2
new file mode 100644
index 0000000..eaefaee
--- /dev/null
+++ b/src/sed/config.h.os2
@@ -0,0 +1,374 @@
+/* config.h.  Generated by configure.  */
+/* config_h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+/* #undef ENABLE_NLS */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+#define HAVE_ALLOCA_H 1
+
+/* Define to 1 if you have the <argz.h> header file. */
+#define HAVE_ARGZ_H 1
+
+/* Define to 1 if you have the `bcopy' function. */
+#define HAVE_BCOPY 1
+
+/* Define to 1 if you have the `btowc' function. */
+#define HAVE_BTOWC 1
+
+/* Define to 1 if you have the `bzero' function. */
+#define HAVE_BZERO 1
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+/* #undef HAVE_DOPRNT */
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the `fchmod' function. */
+#define HAVE_FCHMOD 1
+
+/* Define to 1 if you have the `fchown' function. */
+#define HAVE_FCHOWN 1
+
+/* Define to 1 if you have the `feof_unlocked' function. */
+#define HAVE_FEOF_UNLOCKED 1
+
+/* Define to 1 if you have the `fgets_unlocked' function. */
+#define HAVE_FGETS_UNLOCKED 1
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getc_unlocked' function. */
+#define HAVE_GETC_UNLOCKED 1
+
+/* Define to 1 if you have the `getegid' function. */
+#define HAVE_GETEGID 1
+
+/* Define to 1 if you have the `geteuid' function. */
+#define HAVE_GETEUID 1
+
+/* Define to 1 if you have the `getgid' function. */
+#define HAVE_GETGID 1
+
+/* Define to 1 if you have the `getpagesize' function. */
+#define HAVE_GETPAGESIZE 1
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+/* #undef HAVE_GETTEXT */
+
+/* Define to 1 if you have the `getuid' function. */
+#define HAVE_GETUID 1
+
+/* Define if you have the iconv() function. */
+#define HAVE_ICONV 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <io.h> header file. */
+#define HAVE_IO_H 1
+
+/* Define to 1 if you have the `isascii' function. */
+#define HAVE_ISASCII 1
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `isblank' function. */
+#define HAVE_ISBLANK 1
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+#define HAVE_LANGINFO_CODESET 1
+
+/* Define if your <locale.h> file defines LC_MESSAGES. */
+#define HAVE_LC_MESSAGES 1
+
+/* Define to 1 if you have the `regex' library (-lregex). */
+/* #undef HAVE_LIBREGEX */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you support file names longer than 14 characters. */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define to 1 if you have the <malloc.h> header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if mbrtowc and mbstate_t are properly declared. */
+#define HAVE_MBRTOWC 1
+
+/* Define to 1 if <wchar.h> declares mbstate_t. */
+#define HAVE_MBSTATE_T 1
+
+/* Define to 1 if you have the <mcheck.h> header file. */
+/* #undef HAVE_MCHECK_H */
+
+/* Define to 1 if you have the `memchr' function. */
+#define HAVE_MEMCHR 1
+
+/* Define to 1 if you have the `memcmp' function. */
+#define HAVE_MEMCMP 1
+
+/* Define to 1 if you have the `memcpy' function. */
+#define HAVE_MEMCPY 1
+
+/* Define to 1 if you have the `memmove' function. */
+#define HAVE_MEMMOVE 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mempcpy' function. */
+#define HAVE_MEMPCPY 1
+
+/* Define to 1 if you have the `memset' function. */
+#define HAVE_MEMSET 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have a working `mmap' system call. */
+/* #undef HAVE_MMAP */
+
+/* Define to 1 if you have the `munmap' function. */
+/* #undef HAVE_MUNMAP */
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nl_types.h> header file. */
+#define HAVE_NL_TYPES_H 1
+
+/* Define to 1 if libc includes obstacks. */
+#define HAVE_OBSTACK 1
+
+/* Define to 1 if you have the `pathconf' function. */
+#define HAVE_PATHCONF 1
+
+/* Define to 1 if you have the `popen' function. */
+#define HAVE_POPEN 1
+
+/* Define to 1 if you have the `putenv' function. */
+#define HAVE_PUTENV 1
+
+/* Define to 1 if you have the <regex.h> header file. */
+/* #undef HAVE_REGEX_H */
+
+/* Define to 1 if you have the `setenv' function. */
+#define HAVE_SETENV 1
+
+/* Define to 1 if you have the `setlocale' function. */
+#define HAVE_SETLOCALE 1
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if stdbool.h conforms to C99. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stddef.h> header file. */
+#define HAVE_STDDEF_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `stpcpy' function. */
+#define HAVE_STPCPY 1
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strchr' function. */
+#define HAVE_STRCHR 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strtoul' function. */
+#define HAVE_STRTOUL 1
+
+/* Define to 1 if you have the `strverscmp' function. */
+#define HAVE_STRVERSCMP 1
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/file.h> header file. */
+#define HAVE_SYS_FILE_H 1
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the `tsearch' function. */
+#define HAVE_TSEARCH 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#define HAVE_WCHAR_H 1
+
+/* Define to 1 if you have the `wcrtomb' function. */
+#define HAVE_WCRTOMB 1
+
+/* Define to 1 if you have the `wcscoll' function. */
+#define HAVE_WCSCOLL 1
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#define HAVE_WCTYPE_H 1
+
+/* Define to 1 if the system has the type `_Bool'. */
+#define HAVE__BOOL 1
+
+/* Define to 1 if you have the `__argz_count' function. */
+#define HAVE___ARGZ_COUNT 1
+
+/* Define to 1 if you have the `__argz_next' function. */
+#define HAVE___ARGZ_NEXT 1
+
+/* Define to 1 if you have the `__argz_stringify' function. */
+#define HAVE___ARGZ_STRINGIFY 1
+
+/* Define as const if the declaration of iconv() needs const. */
+#define ICONV_CONST const
+
+/* Name of package */
+#define PACKAGE "sed"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bonzini@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "sed"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "sed 4.1.5"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "sed"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "4.1.5"
+
+/* Define to the version of GNU sed whose features are supported by this sed.
+   */
+#define SED_FEATURE_VERSION "4.1"
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "4.1.5"
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Include BSD functions in regex, used by the testsuite */
+#define _REGEX_RE_COMP 1
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+/* #undef inline */
+#endif
+
+/* Define to a type if <wchar.h> does not define. */
+/* #undef mbstate_t */
+
+/* Define to `long' if <sys/types.h> does not define. */
+/* #undef off_t */
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef ssize_t */
diff --git a/src/sed/config.h.solaris b/src/sed/config.h.solaris
new file mode 100644
index 0000000..21e80a8
--- /dev/null
+++ b/src/sed/config.h.solaris
@@ -0,0 +1,374 @@
+/* config.h.  Generated by configure.  */
+/* config_h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+/* #undef ENABLE_NLS */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+#define HAVE_ALLOCA_H 1
+
+/* Define to 1 if you have the <argz.h> header file. */
+/* #undef HAVE_ARGZ_H */
+
+/* Define to 1 if you have the `bcopy' function. */
+#define HAVE_BCOPY 1
+
+/* Define to 1 if you have the `btowc' function. */
+#define HAVE_BTOWC 1
+
+/* Define to 1 if you have the `bzero' function. */
+#define HAVE_BZERO 1
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+#define HAVE_DOPRNT 1
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the `fchmod' function. */
+#define HAVE_FCHMOD 1
+
+/* Define to 1 if you have the `fchown' function. */
+#define HAVE_FCHOWN 1
+
+/* Define to 1 if you have the `feof_unlocked' function. */
+/* #undef HAVE_FEOF_UNLOCKED */
+
+/* Define to 1 if you have the `fgets_unlocked' function. */
+/* #undef HAVE_FGETS_UNLOCKED */
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getc_unlocked' function. */
+#define HAVE_GETC_UNLOCKED 1
+
+/* Define to 1 if you have the `getegid' function. */
+#define HAVE_GETEGID 1
+
+/* Define to 1 if you have the `geteuid' function. */
+#define HAVE_GETEUID 1
+
+/* Define to 1 if you have the `getgid' function. */
+#define HAVE_GETGID 1
+
+/* Define to 1 if you have the `getpagesize' function. */
+#define HAVE_GETPAGESIZE 1
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+/* #undef HAVE_GETTEXT */
+
+/* Define to 1 if you have the `getuid' function. */
+#define HAVE_GETUID 1
+
+/* Define if you have the iconv() function. */
+#define HAVE_ICONV 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <io.h> header file. */
+/* #undef HAVE_IO_H */
+
+/* Define to 1 if you have the `isascii' function. */
+#define HAVE_ISASCII 1
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `isblank' function. */
+#define HAVE_ISBLANK 1
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+#define HAVE_LANGINFO_CODESET 1
+
+/* Define if your <locale.h> file defines LC_MESSAGES. */
+#define HAVE_LC_MESSAGES 1
+
+/* Define to 1 if you have the `regex' library (-lregex). */
+/* #undef HAVE_LIBREGEX */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you support file names longer than 14 characters. */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define to 1 if you have the <malloc.h> header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if mbrtowc and mbstate_t are properly declared. */
+#define HAVE_MBRTOWC 1
+
+/* Define to 1 if <wchar.h> declares mbstate_t. */
+#define HAVE_MBSTATE_T 1
+
+/* Define to 1 if you have the <mcheck.h> header file. */
+/* #undef HAVE_MCHECK_H */
+
+/* Define to 1 if you have the `memchr' function. */
+#define HAVE_MEMCHR 1
+
+/* Define to 1 if you have the `memcmp' function. */
+#define HAVE_MEMCMP 1
+
+/* Define to 1 if you have the `memcpy' function. */
+#define HAVE_MEMCPY 1
+
+/* Define to 1 if you have the `memmove' function. */
+#define HAVE_MEMMOVE 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mempcpy' function. */
+/* #undef HAVE_MEMPCPY */
+
+/* Define to 1 if you have the `memset' function. */
+#define HAVE_MEMSET 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have a working `mmap' system call. */
+#define HAVE_MMAP 1
+
+/* Define to 1 if you have the `munmap' function. */
+#define HAVE_MUNMAP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nl_types.h> header file. */
+#define HAVE_NL_TYPES_H 1
+
+/* Define to 1 if libc includes obstacks. */
+/* #undef HAVE_OBSTACK */
+
+/* Define to 1 if you have the `pathconf' function. */
+#define HAVE_PATHCONF 1
+
+/* Define to 1 if you have the `popen' function. */
+#define HAVE_POPEN 1
+
+/* Define to 1 if you have the `putenv' function. */
+#define HAVE_PUTENV 1
+
+/* Define to 1 if you have the <regex.h> header file. */
+/* #undef HAVE_REGEX_H */
+
+/* Define to 1 if you have the `setenv' function. */
+#define HAVE_SETENV 1
+
+/* Define to 1 if you have the `setlocale' function. */
+#define HAVE_SETLOCALE 1
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if stdbool.h conforms to C99. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stddef.h> header file. */
+#define HAVE_STDDEF_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `stpcpy' function. */
+/* #undef HAVE_STPCPY */
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the `strchr' function. */
+#define HAVE_STRCHR 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strtoul' function. */
+#define HAVE_STRTOUL 1
+
+/* Define to 1 if you have the `strverscmp' function. */
+/* #undef HAVE_STRVERSCMP */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/file.h> header file. */
+#define HAVE_SYS_FILE_H 1
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the `tsearch' function. */
+#define HAVE_TSEARCH 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#define HAVE_WCHAR_H 1
+
+/* Define to 1 if you have the `wcrtomb' function. */
+#define HAVE_WCRTOMB 1
+
+/* Define to 1 if you have the `wcscoll' function. */
+#define HAVE_WCSCOLL 1
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#define HAVE_WCTYPE_H 1
+
+/* Define to 1 if the system has the type `_Bool'. */
+#define HAVE__BOOL 1
+
+/* Define to 1 if you have the `__argz_count' function. */
+/* #undef HAVE___ARGZ_COUNT */
+
+/* Define to 1 if you have the `__argz_next' function. */
+/* #undef HAVE___ARGZ_NEXT */
+
+/* Define to 1 if you have the `__argz_stringify' function. */
+/* #undef HAVE___ARGZ_STRINGIFY */
+
+/* Define as const if the declaration of iconv() needs const. */
+#define ICONV_CONST const
+
+/* Name of package */
+#define PACKAGE "sed"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bonzini@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "sed"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "sed 4.1.5"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "sed"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "4.1.5"
+
+/* Define to the version of GNU sed whose features are supported by this sed.
+   */
+#define SED_FEATURE_VERSION "4.1"
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "4.1.5"
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#define _FILE_OFFSET_BITS 64
+
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Include BSD functions in regex, used by the testsuite */
+#define _REGEX_RE_COMP 1
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+/* #undef inline */
+#endif
+
+/* Define to a type if <wchar.h> does not define. */
+/* #undef mbstate_t */
+
+/* Define to `long' if <sys/types.h> does not define. */
+/* #undef off_t */
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef ssize_t */
diff --git a/src/sed/config.h.win b/src/sed/config.h.win
new file mode 100644
index 0000000..728db08
--- /dev/null
+++ b/src/sed/config.h.win
@@ -0,0 +1,416 @@
+/* config.h.win  Maintaind by hand.  */
+/* config_h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using `alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+/* #undef ENABLE_NLS */
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+/*#define HAVE_ALLOCA_H 1*/
+
+/* Define to 1 if you have the <argz.h> header file. */
+/*#define HAVE_ARGZ_H 1*/
+
+/* Define to 1 if you have the `bcopy' function. */
+/*#define HAVE_BCOPY 1*/
+
+/* Define to 1 if you have the `btowc' function. */
+/*#define HAVE_BTOWC 1 - bird don't drag in msvcp71.dll */
+
+/* Define to 1 if you have the `bzero' function. */
+/*#define HAVE_BZERO 1*/
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#define HAVE_DIRENT_H 1 /* unused */
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+/* #undef HAVE_DOPRNT */
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the `fchmod' function. */
+/*#define HAVE_FCHMOD 1*/
+
+/* Define to 1 if you have the `fchown' function. */
+/*#define HAVE_FCHOWN 1*/
+
+/* Define to 1 if you have the `feof_unlocked' function. */
+/*#define HAVE_FEOF_UNLOCKED 1*/
+
+/* Define to 1 if you have the `fgets_unlocked' function. */
+/*#define HAVE_FGETS_UNLOCKED 1*/
+
+/* Define to 1 if you have the `getcwd' function. */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the `getc_unlocked' function. */
+/*#define HAVE_GETC_UNLOCKED 1*/
+
+/* Define to 1 if you have the `getegid' function. */
+/*#define HAVE_GETEGID 1*/
+
+/* Define to 1 if you have the `geteuid' function. */
+/*#define HAVE_GETEUID 1*/
+
+/* Define to 1 if you have the `getgid' function. */
+/*#define HAVE_GETGID 1*/
+
+/* Define to 1 if you have the `getpagesize' function. */
+#define HAVE_GETPAGESIZE 1 /* unused */
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+/* #undef HAVE_GETTEXT */
+
+/* Define to 1 if you have the `getuid' function. */
+#define HAVE_GETUID 1 /* unused (intl) */
+
+/* Define if you have the iconv() function. */
+#define HAVE_ICONV 1 /* unused (intl?) */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+/*#define HAVE_INTTYPES_H 1*/
+
+/* Define to 1 if you have the <io.h> header file. */
+/* #undef HAVE_IO_H */
+
+/* Define to 1 if you have the `isascii' function. */
+/*#define HAVE_ISASCII 1*/ /* don't think we've got this... */
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `isblank' function. */
+/*#define HAVE_ISBLANK 1*/ /* don't think we've got this... */
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+/*#define HAVE_LANGINFO_CODESET 1*/
+
+/* Define if your <locale.h> file defines LC_MESSAGES. */
+#define HAVE_LC_MESSAGES 1 /* ??? */
+
+/* Define to 1 if you have the `regex' library (-lregex). */
+/* #undef HAVE_LIBREGEX */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+#define HAVE_LOCALE_H 1
+
+/* Define to 1 if you support file names longer than 14 characters. */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define to 1 if you have the <malloc.h> header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if mbrtowc and mbstate_t are properly declared. */
+/*#define HAVE_MBRTOWC 1 - bird don't drag in msvcp71.dll */
+
+/* Define to 1 if <wchar.h> declares mbstate_t. */
+#define HAVE_MBSTATE_T 1
+
+/* Define to 1 if you have the <mcheck.h> header file. */
+/*#define HAVE_MCHECK_H 1*/
+
+/* Define to 1 if you have the `memchr' function. */
+#define HAVE_MEMCHR 1
+
+/* Define to 1 if you have the `memcmp' function. */
+#define HAVE_MEMCMP 1
+
+/* Define to 1 if you have the `memcpy' function. */
+#define HAVE_MEMCPY 1
+
+/* Define to 1 if you have the `memmove' function. */
+#define HAVE_MEMMOVE 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mempcpy' function. */
+/*#define HAVE_MEMPCPY 1*/
+
+/* Define to 1 if you have the `memset' function. */
+#define HAVE_MEMSET 1
+
+/* Define to 1 if you have the `mkstemp' function. */
+/*#define HAVE_MKSTEMP 1*/
+
+/* Define to 1 if you have a working `mmap' system call. */
+/*#define HAVE_MMAP 1*/
+
+/* Define to 1 if you have the `munmap' function. */
+/*#define HAVE_MUNMAP 1*/
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nl_types.h> header file. */
+/*#define HAVE_NL_TYPES_H 1*/
+
+/* Define to 1 if libc includes obstacks. */
+/*#define HAVE_OBSTACK 1*/
+
+/* Define to 1 if you have the `pathconf' function. */
+#define HAVE_PATHCONF 1 /* ?? */
+
+/* Define to 1 if you have the `popen' function. */
+/*#define HAVE_POPEN 1*/  /** @todo popen */
+
+/* Define to 1 if you have the `putenv' function. */
+#define HAVE_PUTENV 1
+
+/* Define to 1 if you have the <regex.h> header file. */
+/* #undef HAVE_REGEX_H */
+
+/* Define to 1 if you have the `setenv' function. */
+/*#define HAVE_SETENV 1*/
+
+/* Define to 1 if you have the `setlocale' function. */
+#define HAVE_SETLOCALE 1
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#define HAVE_STDARG_H 1
+
+/* Define to 1 if stdbool.h conforms to C99. */
+/*#define HAVE_STDBOOL_H 1*/
+
+/* Define to 1 if you have the <stddef.h> header file. */
+#define HAVE_STDDEF_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `stpcpy' function. */
+/*#define HAVE_STPCPY 1*/
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#define HAVE_STRCASECMP 1
+#define strcasecmp(__a,__b) stricmp((__a),(__b))
+
+/* Define to 1 if you have the `strchr' function. */
+#define HAVE_STRCHR 1
+
+/* Define to 1 if you have the `strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+/*#define HAVE_STRINGS_H 1*/
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strtoul' function. */
+#define HAVE_STRTOUL 1
+
+/* Define to 1 if you have the `strverscmp' function. */
+/*#define HAVE_STRVERSCMP 1*/
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/file.h> header file. */
+/*#define HAVE_SYS_FILE_H 1*/
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+/*#define HAVE_SYS_PARAM_H 1*/
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the `tsearch' function. */
+#define HAVE_TSEARCH 1 /* ??? */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+/*#define HAVE_UNISTD_H 1*/
+
+/* Define to 1 if you have the `vprintf' function. */
+#define HAVE_VPRINTF 1
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#define HAVE_WCHAR_H 1
+
+/* Define to 1 if you have the `wcrtomb' function. */
+/*#define HAVE_WCRTOMB 1  - bird don't drag in msvcp71.dll */
+
+/* Define to 1 if you have the `wcscoll' function. */
+/*#define HAVE_WCSCOLL 1 - bird don't drag in msvcp71.dll */
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#define HAVE_WCTYPE_H 1
+
+/* Define to 1 if the system has the type `_Bool'. */
+/*#define HAVE__BOOL 1*/
+
+/* Define to 1 if you have the `__argz_count' function. */
+/*#define HAVE___ARGZ_COUNT 1*/
+
+/* Define to 1 if you have the `__argz_next' function. */
+/*#define HAVE___ARGZ_NEXT 1*/
+
+/* Define to 1 if you have the `__argz_stringify' function. */
+/*#define HAVE___ARGZ_STRINGIFY 1*/
+
+/* Define as const if the declaration of iconv() needs const. */
+/*#define ICONV_CONST */
+
+/* Name of package */
+#define PACKAGE "sed"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bonzini@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "sed"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "sed 4.1.5"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "sed"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "4.1.5"
+
+/* Define to the version of GNU sed whose features are supported by this sed.
+   */
+#define SED_FEATURE_VERSION "4.1"
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "4.1.5"
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#define _FILE_OFFSET_BITS 64
+
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Include BSD functions in regex, used by the testsuite */
+#define _REGEX_RE_COMP 1
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+/* #undef inline */
+#endif
+
+/* Define to a type if <wchar.h> does not define. */
+/* #undef mbstate_t */
+
+/* Define to `long' if <sys/types.h> does not define. */
+/* #undef off_t */
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Define to `int' if <sys/types.h> does not define. */
+#define ssize_t intptr_t /* does 14.0 have this? */
+
+/* Additional defines and includes to make it work with the microsoft compiler */
+#ifndef __config_h_included_already
+#define __config_h_included_already
+
+#define HAVE_FCNTL_H 1 /* no idea why this isn't in config.h.in... */
+
+#define VOID void
+#define inline _inline
+#include <io.h> /* isatty ++ */
+#include <sys/stat.h>
+#define S_ISDIR(m)  (((m) & _S_IFMT) == _S_IFDIR)
+#define S_ISREG(m)  (((m) & _S_IFMT) == _S_IFREG)
+#define S_ISLNK(m)  0
+#include <string.h> /* memory.h != string.h it seem even if the code assumes so. */
+
+/* stdbool.h replacement */
+  typedef char bool;
+#define false 0
+#define true 1
+
+#include <wchar.h>
+/* mbsinit isn't defined until 2005 / v8.0. */
+#if _MSC_VER < 1400
+int _inline mbsinit(const mbstate_t *_p)
+{
+    return (_p) == (const mbstate_t *)0 || *(_p) == 0;
+}
+#endif
+
+#if _MSC_VER >= 1400
+/* crtdefs.h contains a typedef int errcode which collides with regcomp.c,
+   try avoid it. */
+#define errcode _errcode
+#endif
+
+/* mkstemp, getline */
+
+#include "get_codepage.h"
+
+#endif
diff --git a/src/sed/config/codeset.m4 b/src/sed/config/codeset.m4
new file mode 100644
index 0000000..59535eb
--- /dev/null
+++ b/src/sed/config/codeset.m4
@@ -0,0 +1,23 @@
+# codeset.m4 serial AM1 (gettext-0.10.40)
+dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([AM_LANGINFO_CODESET],
+[
+  AC_CACHE_CHECK([for nl_langinfo and CODESET], am_cv_langinfo_codeset,
+    [AC_TRY_LINK([#include <langinfo.h>],
+      [char* cs = nl_langinfo(CODESET);],
+      am_cv_langinfo_codeset=yes,
+      am_cv_langinfo_codeset=no)
+    ])
+  if test $am_cv_langinfo_codeset = yes; then
+    AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
+      [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
+  fi
+])
diff --git a/src/sed/config/config.guess b/src/sed/config/config.guess
new file mode 100755
index 0000000..23d670b
--- /dev/null
+++ b/src/sed/config/config.guess
@@ -0,0 +1,1450 @@
+#! /bin/sh
+# Attempt to guess a canonical system name.
+#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+#   2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+
+timestamp='2004-08-11'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Originally written by Per Bothner <per@bothner.com>.
+# Please send patches to <config-patches@gnu.org>.  Submit a context
+# diff and a properly formatted ChangeLog entry.
+#
+# This script attempts to guess a canonical system name similar to
+# config.sub.  If it succeeds, it prints the system name on stdout, and
+# exits with 0.  Otherwise, it exits with 1.
+#
+# The plan is that this can be called by configure scripts if you
+# don't specify an explicit build system type.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION]
+
+Output the configuration name of the system \`$me' is run on.
+
+Operation modes:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.guess ($timestamp)
+
+Originally written by Per Bothner.
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit 0 ;;
+    --version | -v )
+       echo "$version" ; exit 0 ;;
+    --help | --h* | -h )
+       echo "$usage"; exit 0 ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+    * )
+       break ;;
+  esac
+done
+
+if test $# != 0; then
+  echo "$me: too many arguments$help" >&2
+  exit 1
+fi
+
+trap 'exit 1' 1 2 15
+
+# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
+# compiler to aid in system detection is discouraged as it requires
+# temporary files to be created and, as you can see below, it is a
+# headache to deal with in a portable fashion.
+
+# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
+# use `HOST_CC' if defined, but it is deprecated.
+
+# Portable tmp directory creation inspired by the Autoconf team.
+
+set_cc_for_build='
+trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ;
+trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ;
+: ${TMPDIR=/tmp} ;
+ { tmp=`(umask 077 && mktemp -d -q "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
+ { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } ||
+ { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } ||
+ { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ;
+dummy=$tmp/dummy ;
+tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ;
+case $CC_FOR_BUILD,$HOST_CC,$CC in
+ ,,)    echo "int x;" > $dummy.c ;
+	for c in cc gcc c89 c99 ; do
+	  if ($c -c -o $dummy.o $dummy.c) >/dev/null 2>&1 ; then
+	     CC_FOR_BUILD="$c"; break ;
+	  fi ;
+	done ;
+	if test x"$CC_FOR_BUILD" = x ; then
+	  CC_FOR_BUILD=no_compiler_found ;
+	fi
+	;;
+ ,,*)   CC_FOR_BUILD=$CC ;;
+ ,*,*)  CC_FOR_BUILD=$HOST_CC ;;
+esac ;'
+
+# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
+# (ghazi@noc.rutgers.edu 1994-08-24)
+if (test -f /.attbin/uname) >/dev/null 2>&1 ; then
+	PATH=$PATH:/.attbin ; export PATH
+fi
+
+UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
+UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
+UNAME_SYSTEM=`(uname -s) 2>/dev/null`  || UNAME_SYSTEM=unknown
+UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
+
+# Note: order is significant - the case branches are not exclusive.
+
+case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
+    *:NetBSD:*:*)
+	# NetBSD (nbsd) targets should (where applicable) match one or
+	# more of the tupples: *-*-netbsdelf*, *-*-netbsdaout*,
+	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
+	# switched to ELF, *-*-netbsd* would select the old
+	# object file format.  This provides both forward
+	# compatibility and a consistent mechanism for selecting the
+	# object file format.
+	#
+	# Note: NetBSD doesn't particularly care about the vendor
+	# portion of the name.  We always set it to "unknown".
+	sysctl="sysctl -n hw.machine_arch"
+	UNAME_MACHINE_ARCH=`(/sbin/$sysctl 2>/dev/null || \
+	    /usr/sbin/$sysctl 2>/dev/null || echo unknown)`
+	case "${UNAME_MACHINE_ARCH}" in
+	    armeb) machine=armeb-unknown ;;
+	    arm*) machine=arm-unknown ;;
+	    sh3el) machine=shl-unknown ;;
+	    sh3eb) machine=sh-unknown ;;
+	    *) machine=${UNAME_MACHINE_ARCH}-unknown ;;
+	esac
+	# The Operating System including object format, if it has switched
+	# to ELF recently, or will in the future.
+	case "${UNAME_MACHINE_ARCH}" in
+	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
+		eval $set_cc_for_build
+		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
+			| grep __ELF__ >/dev/null
+		then
+		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
+		    # Return netbsd for either.  FIX?
+		    os=netbsd
+		else
+		    os=netbsdelf
+		fi
+		;;
+	    *)
+	        os=netbsd
+		;;
+	esac
+	# The OS release
+	# Debian GNU/NetBSD machines have a different userland, and
+	# thus, need a distinct triplet. However, they do not need
+	# kernel version information, so it can be replaced with a
+	# suitable tag, in the style of linux-gnu.
+	case "${UNAME_VERSION}" in
+	    Debian*)
+		release='-gnu'
+		;;
+	    *)
+		release=`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
+		;;
+	esac
+	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
+	# contains redundant information, the shorter form:
+	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
+	echo "${machine}-${os}${release}"
+	exit 0 ;;
+    amd64:OpenBSD:*:*)
+	echo x86_64-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    amiga:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    arc:OpenBSD:*:*)
+	echo mipsel-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    cats:OpenBSD:*:*)
+	echo arm-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    hp300:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    luna88k:OpenBSD:*:*)
+    	echo m88k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    mac68k:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    macppc:OpenBSD:*:*)
+	echo powerpc-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    mvme68k:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    mvme88k:OpenBSD:*:*)
+	echo m88k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    mvmeppc:OpenBSD:*:*)
+	echo powerpc-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    pmax:OpenBSD:*:*)
+	echo mipsel-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    sgi:OpenBSD:*:*)
+	echo mipseb-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    sun3:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    wgrisc:OpenBSD:*:*)
+	echo mipsel-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    *:OpenBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    *:ekkoBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
+	exit 0 ;;
+    macppc:MirBSD:*:*)
+	echo powerppc-unknown-mirbsd${UNAME_RELEASE}
+	exit 0 ;;
+    *:MirBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE}
+	exit 0 ;;
+    alpha:OSF1:*:*)
+	case $UNAME_RELEASE in
+	*4.0)
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
+		;;
+	*5.*)
+	        UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+		;;
+	esac
+	# According to Compaq, /usr/sbin/psrinfo has been available on
+	# OSF/1 and Tru64 systems produced since 1995.  I hope that
+	# covers most systems running today.  This code pipes the CPU
+	# types through head -n 1, so we only detect the type of CPU 0.
+	ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1`
+	case "$ALPHA_CPU_TYPE" in
+	    "EV4 (21064)")
+		UNAME_MACHINE="alpha" ;;
+	    "EV4.5 (21064)")
+		UNAME_MACHINE="alpha" ;;
+	    "LCA4 (21066/21068)")
+		UNAME_MACHINE="alpha" ;;
+	    "EV5 (21164)")
+		UNAME_MACHINE="alphaev5" ;;
+	    "EV5.6 (21164A)")
+		UNAME_MACHINE="alphaev56" ;;
+	    "EV5.6 (21164PC)")
+		UNAME_MACHINE="alphapca56" ;;
+	    "EV5.7 (21164PC)")
+		UNAME_MACHINE="alphapca57" ;;
+	    "EV6 (21264)")
+		UNAME_MACHINE="alphaev6" ;;
+	    "EV6.7 (21264A)")
+		UNAME_MACHINE="alphaev67" ;;
+	    "EV6.8CB (21264C)")
+		UNAME_MACHINE="alphaev68" ;;
+	    "EV6.8AL (21264B)")
+		UNAME_MACHINE="alphaev68" ;;
+	    "EV6.8CX (21264D)")
+		UNAME_MACHINE="alphaev68" ;;
+	    "EV6.9A (21264/EV69A)")
+		UNAME_MACHINE="alphaev69" ;;
+	    "EV7 (21364)")
+		UNAME_MACHINE="alphaev7" ;;
+	    "EV7.9 (21364A)")
+		UNAME_MACHINE="alphaev79" ;;
+	esac
+	# A Pn.n version is a patched version.
+	# A Vn.n version is a released version.
+	# A Tn.n version is a released field test version.
+	# A Xn.n version is an unreleased experimental baselevel.
+	# 1.2 uses "1.2" for uname -r.
+	echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+	exit 0 ;;
+    Alpha\ *:Windows_NT*:*)
+	# How do we know it's Interix rather than the generic POSIX subsystem?
+	# Should we change UNAME_MACHINE based on the output of uname instead
+	# of the specific Alpha model?
+	echo alpha-pc-interix
+	exit 0 ;;
+    21064:Windows_NT:50:3)
+	echo alpha-dec-winnt3.5
+	exit 0 ;;
+    Amiga*:UNIX_System_V:4.0:*)
+	echo m68k-unknown-sysv4
+	exit 0;;
+    *:[Aa]miga[Oo][Ss]:*:*)
+	echo ${UNAME_MACHINE}-unknown-amigaos
+	exit 0 ;;
+    *:[Mm]orph[Oo][Ss]:*:*)
+	echo ${UNAME_MACHINE}-unknown-morphos
+	exit 0 ;;
+    *:OS/390:*:*)
+	echo i370-ibm-openedition
+	exit 0 ;;
+    *:OS400:*:*)
+        echo powerpc-ibm-os400
+	exit 0 ;;
+    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
+	echo arm-acorn-riscix${UNAME_RELEASE}
+	exit 0;;
+    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
+	echo hppa1.1-hitachi-hiuxmpp
+	exit 0;;
+    Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
+	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
+	if test "`(/bin/universe) 2>/dev/null`" = att ; then
+		echo pyramid-pyramid-sysv3
+	else
+		echo pyramid-pyramid-bsd
+	fi
+	exit 0 ;;
+    NILE*:*:*:dcosx)
+	echo pyramid-pyramid-svr4
+	exit 0 ;;
+    DRS?6000:unix:4.0:6*)
+	echo sparc-icl-nx6
+	exit 0 ;;
+    DRS?6000:UNIX_SV:4.2*:7*)
+	case `/usr/bin/uname -p` in
+	    sparc) echo sparc-icl-nx7 && exit 0 ;;
+	esac ;;
+    sun4H:SunOS:5.*:*)
+	echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
+	echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    i86pc:SunOS:5.*:*)
+	echo i386-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    sun4*:SunOS:6*:*)
+	# According to config.sub, this is the proper way to canonicalize
+	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
+	# it's likely to be more like Solaris than SunOS4.
+	echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    sun4*:SunOS:*:*)
+	case "`/usr/bin/arch -k`" in
+	    Series*|S4*)
+		UNAME_RELEASE=`uname -v`
+		;;
+	esac
+	# Japanese Language versions have a version number like `4.1.3-JL'.
+	echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'`
+	exit 0 ;;
+    sun3*:SunOS:*:*)
+	echo m68k-sun-sunos${UNAME_RELEASE}
+	exit 0 ;;
+    sun*:*:4.2BSD:*)
+	UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
+	test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3
+	case "`/bin/arch`" in
+	    sun3)
+		echo m68k-sun-sunos${UNAME_RELEASE}
+		;;
+	    sun4)
+		echo sparc-sun-sunos${UNAME_RELEASE}
+		;;
+	esac
+	exit 0 ;;
+    aushp:SunOS:*:*)
+	echo sparc-auspex-sunos${UNAME_RELEASE}
+	exit 0 ;;
+    # The situation for MiNT is a little confusing.  The machine name
+    # can be virtually everything (everything which is not
+    # "atarist" or "atariste" at least should have a processor
+    # > m68000).  The system name ranges from "MiNT" over "FreeMiNT"
+    # to the lowercase version "mint" (or "freemint").  Finally
+    # the system name "TOS" denotes a system which is actually not
+    # MiNT.  But MiNT is downward compatible to TOS, so this should
+    # be no problem.
+    atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
+        echo m68k-atari-mint${UNAME_RELEASE}
+	exit 0 ;;
+    atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
+	echo m68k-atari-mint${UNAME_RELEASE}
+        exit 0 ;;
+    *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
+        echo m68k-atari-mint${UNAME_RELEASE}
+	exit 0 ;;
+    milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
+        echo m68k-milan-mint${UNAME_RELEASE}
+        exit 0 ;;
+    hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
+        echo m68k-hades-mint${UNAME_RELEASE}
+        exit 0 ;;
+    *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
+        echo m68k-unknown-mint${UNAME_RELEASE}
+        exit 0 ;;
+    m68k:machten:*:*)
+	echo m68k-apple-machten${UNAME_RELEASE}
+	exit 0 ;;
+    powerpc:machten:*:*)
+	echo powerpc-apple-machten${UNAME_RELEASE}
+	exit 0 ;;
+    RISC*:Mach:*:*)
+	echo mips-dec-mach_bsd4.3
+	exit 0 ;;
+    RISC*:ULTRIX:*:*)
+	echo mips-dec-ultrix${UNAME_RELEASE}
+	exit 0 ;;
+    VAX*:ULTRIX*:*:*)
+	echo vax-dec-ultrix${UNAME_RELEASE}
+	exit 0 ;;
+    2020:CLIX:*:* | 2430:CLIX:*:*)
+	echo clipper-intergraph-clix${UNAME_RELEASE}
+	exit 0 ;;
+    mips:*:*:UMIPS | mips:*:*:RISCos)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+#ifdef __cplusplus
+#include <stdio.h>  /* for printf() prototype */
+	int main (int argc, char *argv[]) {
+#else
+	int main (argc, argv) int argc; char *argv[]; {
+#endif
+	#if defined (host_mips) && defined (MIPSEB)
+	#if defined (SYSTYPE_SYSV)
+	  printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_SVR4)
+	  printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
+	  printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0);
+	#endif
+	#endif
+	  exit (-1);
+	}
+EOF
+	$CC_FOR_BUILD -o $dummy $dummy.c \
+	  && $dummy `echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` \
+	  && exit 0
+	echo mips-mips-riscos${UNAME_RELEASE}
+	exit 0 ;;
+    Motorola:PowerMAX_OS:*:*)
+	echo powerpc-motorola-powermax
+	exit 0 ;;
+    Motorola:*:4.3:PL8-*)
+	echo powerpc-harris-powermax
+	exit 0 ;;
+    Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
+	echo powerpc-harris-powermax
+	exit 0 ;;
+    Night_Hawk:Power_UNIX:*:*)
+	echo powerpc-harris-powerunix
+	exit 0 ;;
+    m88k:CX/UX:7*:*)
+	echo m88k-harris-cxux7
+	exit 0 ;;
+    m88k:*:4*:R4*)
+	echo m88k-motorola-sysv4
+	exit 0 ;;
+    m88k:*:3*:R3*)
+	echo m88k-motorola-sysv3
+	exit 0 ;;
+    AViiON:dgux:*:*)
+        # DG/UX returns AViiON for all architectures
+        UNAME_PROCESSOR=`/usr/bin/uname -p`
+	if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
+	then
+	    if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
+	       [ ${TARGET_BINARY_INTERFACE}x = x ]
+	    then
+		echo m88k-dg-dgux${UNAME_RELEASE}
+	    else
+		echo m88k-dg-dguxbcs${UNAME_RELEASE}
+	    fi
+	else
+	    echo i586-dg-dgux${UNAME_RELEASE}
+	fi
+ 	exit 0 ;;
+    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
+	echo m88k-dolphin-sysv3
+	exit 0 ;;
+    M88*:*:R3*:*)
+	# Delta 88k system running SVR3
+	echo m88k-motorola-sysv3
+	exit 0 ;;
+    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
+	echo m88k-tektronix-sysv3
+	exit 0 ;;
+    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
+	echo m68k-tektronix-bsd
+	exit 0 ;;
+    *:IRIX*:*:*)
+	echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'`
+	exit 0 ;;
+    ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
+	echo romp-ibm-aix      # uname -m gives an 8 hex-code CPU id
+	exit 0 ;;              # Note that: echo "'`uname -s`'" gives 'AIX '
+    i*86:AIX:*:*)
+	echo i386-ibm-aix
+	exit 0 ;;
+    ia64:AIX:*:*)
+	if [ -x /usr/bin/oslevel ] ; then
+		IBM_REV=`/usr/bin/oslevel`
+	else
+		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+	fi
+	echo ${UNAME_MACHINE}-ibm-aix${IBM_REV}
+	exit 0 ;;
+    *:AIX:2:3)
+	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
+		eval $set_cc_for_build
+		sed 's/^		//' << EOF >$dummy.c
+		#include <sys/systemcfg.h>
+
+		main()
+			{
+			if (!__power_pc())
+				exit(1);
+			puts("powerpc-ibm-aix3.2.5");
+			exit(0);
+			}
+EOF
+		$CC_FOR_BUILD -o $dummy $dummy.c && $dummy && exit 0
+		echo rs6000-ibm-aix3.2.5
+	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
+		echo rs6000-ibm-aix3.2.4
+	else
+		echo rs6000-ibm-aix3.2
+	fi
+	exit 0 ;;
+    *:AIX:*:[45])
+	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
+	if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
+		IBM_ARCH=rs6000
+	else
+		IBM_ARCH=powerpc
+	fi
+	if [ -x /usr/bin/oslevel ] ; then
+		IBM_REV=`/usr/bin/oslevel`
+	else
+		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+	fi
+	echo ${IBM_ARCH}-ibm-aix${IBM_REV}
+	exit 0 ;;
+    *:AIX:*:*)
+	echo rs6000-ibm-aix
+	exit 0 ;;
+    ibmrt:4.4BSD:*|romp-ibm:BSD:*)
+	echo romp-ibm-bsd4.4
+	exit 0 ;;
+    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
+	echo romp-ibm-bsd${UNAME_RELEASE}   # 4.3 with uname added to
+	exit 0 ;;                           # report: romp-ibm BSD 4.3
+    *:BOSX:*:*)
+	echo rs6000-bull-bosx
+	exit 0 ;;
+    DPX/2?00:B.O.S.:*:*)
+	echo m68k-bull-sysv3
+	exit 0 ;;
+    9000/[34]??:4.3bsd:1.*:*)
+	echo m68k-hp-bsd
+	exit 0 ;;
+    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
+	echo m68k-hp-bsd4.4
+	exit 0 ;;
+    9000/[34678]??:HP-UX:*:*)
+	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+	case "${UNAME_MACHINE}" in
+	    9000/31? )            HP_ARCH=m68000 ;;
+	    9000/[34]?? )         HP_ARCH=m68k ;;
+	    9000/[678][0-9][0-9])
+		if [ -x /usr/bin/getconf ]; then
+		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
+                    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+                    case "${sc_cpu_version}" in
+                      523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
+                      528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
+                      532)                      # CPU_PA_RISC2_0
+                        case "${sc_kernel_bits}" in
+                          32) HP_ARCH="hppa2.0n" ;;
+                          64) HP_ARCH="hppa2.0w" ;;
+			  '') HP_ARCH="hppa2.0" ;;   # HP-UX 10.20
+                        esac ;;
+                    esac
+		fi
+		if [ "${HP_ARCH}" = "" ]; then
+		    eval $set_cc_for_build
+		    sed 's/^              //' << EOF >$dummy.c
+
+              #define _HPUX_SOURCE
+              #include <stdlib.h>
+              #include <unistd.h>
+
+              int main ()
+              {
+              #if defined(_SC_KERNEL_BITS)
+                  long bits = sysconf(_SC_KERNEL_BITS);
+              #endif
+                  long cpu  = sysconf (_SC_CPU_VERSION);
+
+                  switch (cpu)
+              	{
+              	case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+              	case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+              	case CPU_PA_RISC2_0:
+              #if defined(_SC_KERNEL_BITS)
+              	    switch (bits)
+              		{
+              		case 64: puts ("hppa2.0w"); break;
+              		case 32: puts ("hppa2.0n"); break;
+              		default: puts ("hppa2.0"); break;
+              		} break;
+              #else  /* !defined(_SC_KERNEL_BITS) */
+              	    puts ("hppa2.0"); break;
+              #endif
+              	default: puts ("hppa1.0"); break;
+              	}
+                  exit (0);
+              }
+EOF
+		    (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
+		    test -z "$HP_ARCH" && HP_ARCH=hppa
+		fi ;;
+	esac
+	if [ ${HP_ARCH} = "hppa2.0w" ]
+	then
+	    # avoid double evaluation of $set_cc_for_build
+	    test -n "$CC_FOR_BUILD" || eval $set_cc_for_build
+	    if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E -) | grep __LP64__ >/dev/null
+	    then
+		HP_ARCH="hppa2.0w"
+	    else
+		HP_ARCH="hppa64"
+	    fi
+	fi
+	echo ${HP_ARCH}-hp-hpux${HPUX_REV}
+	exit 0 ;;
+    ia64:HP-UX:*:*)
+	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+	echo ia64-hp-hpux${HPUX_REV}
+	exit 0 ;;
+    3050*:HI-UX:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#include <unistd.h>
+	int
+	main ()
+	{
+	  long cpu = sysconf (_SC_CPU_VERSION);
+	  /* The order matters, because CPU_IS_HP_MC68K erroneously returns
+	     true for CPU_PA_RISC1_0.  CPU_IS_PA_RISC returns correct
+	     results, however.  */
+	  if (CPU_IS_PA_RISC (cpu))
+	    {
+	      switch (cpu)
+		{
+		  case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
+		  default: puts ("hppa-hitachi-hiuxwe2"); break;
+		}
+	    }
+	  else if (CPU_IS_HP_MC68K (cpu))
+	    puts ("m68k-hitachi-hiuxwe2");
+	  else puts ("unknown-hitachi-hiuxwe2");
+	  exit (0);
+	}
+EOF
+	$CC_FOR_BUILD -o $dummy $dummy.c && $dummy && exit 0
+	echo unknown-hitachi-hiuxwe2
+	exit 0 ;;
+    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* )
+	echo hppa1.1-hp-bsd
+	exit 0 ;;
+    9000/8??:4.3bsd:*:*)
+	echo hppa1.0-hp-bsd
+	exit 0 ;;
+    *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
+	echo hppa1.0-hp-mpeix
+	exit 0 ;;
+    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* )
+	echo hppa1.1-hp-osf
+	exit 0 ;;
+    hp8??:OSF1:*:*)
+	echo hppa1.0-hp-osf
+	exit 0 ;;
+    i*86:OSF1:*:*)
+	if [ -x /usr/sbin/sysversion ] ; then
+	    echo ${UNAME_MACHINE}-unknown-osf1mk
+	else
+	    echo ${UNAME_MACHINE}-unknown-osf1
+	fi
+	exit 0 ;;
+    parisc*:Lites*:*:*)
+	echo hppa1.1-hp-lites
+	exit 0 ;;
+    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
+	echo c1-convex-bsd
+        exit 0 ;;
+    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+        exit 0 ;;
+    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
+	echo c34-convex-bsd
+        exit 0 ;;
+    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
+	echo c38-convex-bsd
+        exit 0 ;;
+    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
+	echo c4-convex-bsd
+        exit 0 ;;
+    CRAY*Y-MP:*:*:*)
+	echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit 0 ;;
+    CRAY*[A-Z]90:*:*:*)
+	echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \
+	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
+	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
+	      -e 's/\.[^.]*$/.X/'
+	exit 0 ;;
+    CRAY*TS:*:*:*)
+	echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit 0 ;;
+    CRAY*T3E:*:*:*)
+	echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit 0 ;;
+    CRAY*SV1:*:*:*)
+	echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit 0 ;;
+    *:UNICOS/mp:*:*)
+	echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit 0 ;;
+    F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
+	FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+        FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
+        echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+        exit 0 ;;
+    5000:UNIX_System_V:4.*:*)
+        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+        FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
+        echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit 0 ;;
+    i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
+	echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
+	exit 0 ;;
+    sparc*:BSD/OS:*:*)
+	echo sparc-unknown-bsdi${UNAME_RELEASE}
+	exit 0 ;;
+    *:BSD/OS:*:*)
+	echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
+	exit 0 ;;
+    *:FreeBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
+	exit 0 ;;
+    i*:CYGWIN*:*)
+	echo ${UNAME_MACHINE}-pc-cygwin
+	exit 0 ;;
+    i*:MINGW*:*)
+	echo ${UNAME_MACHINE}-pc-mingw32
+	exit 0 ;;
+    i*:PW*:*)
+	echo ${UNAME_MACHINE}-pc-pw32
+	exit 0 ;;
+    x86:Interix*:[34]*)
+	echo i586-pc-interix${UNAME_RELEASE}|sed -e 's/\..*//'
+	exit 0 ;;
+    [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*)
+	echo i${UNAME_MACHINE}-pc-mks
+	exit 0 ;;
+    i*:Windows_NT*:* | Pentium*:Windows_NT*:*)
+	# How do we know it's Interix rather than the generic POSIX subsystem?
+	# It also conflicts with pre-2.0 versions of AT&T UWIN. Should we
+	# UNAME_MACHINE based on the output of uname instead of i386?
+	echo i586-pc-interix
+	exit 0 ;;
+    i*:UWIN*:*)
+	echo ${UNAME_MACHINE}-pc-uwin
+	exit 0 ;;
+    p*:CYGWIN*:*)
+	echo powerpcle-unknown-cygwin
+	exit 0 ;;
+    prep*:SunOS:5.*:*)
+	echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    *:GNU:*:*)
+	# the GNU system
+	echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
+	exit 0 ;;
+    *:GNU/*:*:*)
+	# other systems with GNU libc and userland
+	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu
+	exit 0 ;;
+    i*86:Minix:*:*)
+	echo ${UNAME_MACHINE}-pc-minix
+	exit 0 ;;
+    arm*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    cris:Linux:*:*)
+	echo cris-axis-linux-gnu
+	exit 0 ;;
+    ia64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    m32r*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    m68*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    mips:Linux:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#undef CPU
+	#undef mips
+	#undef mipsel
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	CPU=mipsel
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	CPU=mips
+	#else
+	CPU=
+	#endif
+	#endif
+EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep ^CPU=`
+	test x"${CPU}" != x && echo "${CPU}-unknown-linux-gnu" && exit 0
+	;;
+    mips64:Linux:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#undef CPU
+	#undef mips64
+	#undef mips64el
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	CPU=mips64el
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	CPU=mips64
+	#else
+	CPU=
+	#endif
+	#endif
+EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep ^CPU=`
+	test x"${CPU}" != x && echo "${CPU}-unknown-linux-gnu" && exit 0
+	;;
+    ppc:Linux:*:*)
+	echo powerpc-unknown-linux-gnu
+	exit 0 ;;
+    ppc64:Linux:*:*)
+	echo powerpc64-unknown-linux-gnu
+	exit 0 ;;
+    alpha:Linux:*:*)
+	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
+	  EV5)   UNAME_MACHINE=alphaev5 ;;
+	  EV56)  UNAME_MACHINE=alphaev56 ;;
+	  PCA56) UNAME_MACHINE=alphapca56 ;;
+	  PCA57) UNAME_MACHINE=alphapca56 ;;
+	  EV6)   UNAME_MACHINE=alphaev6 ;;
+	  EV67)  UNAME_MACHINE=alphaev67 ;;
+	  EV68*) UNAME_MACHINE=alphaev68 ;;
+        esac
+	objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null
+	if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
+	echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
+	exit 0 ;;
+    parisc:Linux:*:* | hppa:Linux:*:*)
+	# Look for CPU level
+	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
+	  PA7*) echo hppa1.1-unknown-linux-gnu ;;
+	  PA8*) echo hppa2.0-unknown-linux-gnu ;;
+	  *)    echo hppa-unknown-linux-gnu ;;
+	esac
+	exit 0 ;;
+    parisc64:Linux:*:* | hppa64:Linux:*:*)
+	echo hppa64-unknown-linux-gnu
+	exit 0 ;;
+    s390:Linux:*:* | s390x:Linux:*:*)
+	echo ${UNAME_MACHINE}-ibm-linux
+	exit 0 ;;
+    sh64*:Linux:*:*)
+    	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    sh*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    sparc:Linux:*:* | sparc64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    x86_64:Linux:*:*)
+	echo x86_64-unknown-linux-gnu
+	exit 0 ;;
+    i*86:Linux:*:*)
+	# The BFD linker knows what the default object file format is, so
+	# first see if it will tell us. cd to the root directory to prevent
+	# problems with other programs or directories called `ld' in the path.
+	# Set LC_ALL=C to ensure ld outputs messages in English.
+	ld_supported_targets=`cd /; LC_ALL=C ld --help 2>&1 \
+			 | sed -ne '/supported targets:/!d
+				    s/[ 	][ 	]*/ /g
+				    s/.*supported targets: *//
+				    s/ .*//
+				    p'`
+        case "$ld_supported_targets" in
+	  elf32-i386)
+		TENTATIVE="${UNAME_MACHINE}-pc-linux-gnu"
+		;;
+	  a.out-i386-linux)
+		echo "${UNAME_MACHINE}-pc-linux-gnuaout"
+		exit 0 ;;
+	  coff-i386)
+		echo "${UNAME_MACHINE}-pc-linux-gnucoff"
+		exit 0 ;;
+	  "")
+		# Either a pre-BFD a.out linker (linux-gnuoldld) or
+		# one that does not give us useful --help.
+		echo "${UNAME_MACHINE}-pc-linux-gnuoldld"
+		exit 0 ;;
+	esac
+	# Determine whether the default compiler is a.out or elf
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#include <features.h>
+	#ifdef __ELF__
+	# ifdef __GLIBC__
+	#  if __GLIBC__ >= 2
+	LIBC=gnu
+	#  else
+	LIBC=gnulibc1
+	#  endif
+	# else
+	LIBC=gnulibc1
+	# endif
+	#else
+	#ifdef __INTEL_COMPILER
+	LIBC=gnu
+	#else
+	LIBC=gnuaout
+	#endif
+	#endif
+	#ifdef __dietlibc__
+	LIBC=dietlibc
+	#endif
+EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep ^LIBC=`
+	test x"${LIBC}" != x && echo "${UNAME_MACHINE}-pc-linux-${LIBC}" && exit 0
+	test x"${TENTATIVE}" != x && echo "${TENTATIVE}" && exit 0
+	;;
+    i*86:DYNIX/ptx:4*:*)
+	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
+	# earlier versions are messed up and put the nodename in both
+	# sysname and nodename.
+	echo i386-sequent-sysv4
+	exit 0 ;;
+    i*86:UNIX_SV:4.2MP:2.*)
+        # Unixware is an offshoot of SVR4, but it has its own version
+        # number series starting with 2...
+        # I am not positive that other SVR4 systems won't match this,
+	# I just have to hope.  -- rms.
+        # Use sysv4.2uw... so that sysv4* matches it.
+	echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
+	exit 0 ;;
+    i*86:OS/2:*:*)
+	# If we were able to find `uname', then EMX Unix compatibility
+	# is probably installed.
+	echo ${UNAME_MACHINE}-pc-os2-emx
+	exit 0 ;;
+    i*86:XTS-300:*:STOP)
+	echo ${UNAME_MACHINE}-unknown-stop
+	exit 0 ;;
+    i*86:atheos:*:*)
+	echo ${UNAME_MACHINE}-unknown-atheos
+	exit 0 ;;
+	i*86:syllable:*:*)
+	echo ${UNAME_MACHINE}-pc-syllable
+	exit 0 ;;
+    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*)
+	echo i386-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    i*86:*DOS:*:*)
+	echo ${UNAME_MACHINE}-pc-msdosdjgpp
+	exit 0 ;;
+    i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*)
+	UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'`
+	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
+		echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL}
+	else
+		echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL}
+	fi
+	exit 0 ;;
+    i*86:*:5:[78]*)
+	case `/bin/uname -X | grep "^Machine"` in
+	    *486*)	     UNAME_MACHINE=i486 ;;
+	    *Pentium)	     UNAME_MACHINE=i586 ;;
+	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
+	esac
+	echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
+	exit 0 ;;
+    i*86:*:3.2:*)
+	if test -f /usr/options/cb.name; then
+		UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
+		echo ${UNAME_MACHINE}-pc-isc$UNAME_REL
+	elif /bin/uname -X 2>/dev/null >/dev/null ; then
+		UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
+		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
+		(/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
+			&& UNAME_MACHINE=i586
+		(/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		echo ${UNAME_MACHINE}-pc-sco$UNAME_REL
+	else
+		echo ${UNAME_MACHINE}-pc-sysv32
+	fi
+	exit 0 ;;
+    pc:*:*:*)
+	# Left here for compatibility:
+        # uname -m prints for DJGPP always 'pc', but it prints nothing about
+        # the processor, so we play safe by assuming i386.
+	echo i386-pc-msdosdjgpp
+        exit 0 ;;
+    Intel:Mach:3*:*)
+	echo i386-pc-mach3
+	exit 0 ;;
+    paragon:*:*:*)
+	echo i860-intel-osf1
+	exit 0 ;;
+    i860:*:4.*:*) # i860-SVR4
+	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
+	  echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4
+	else # Add other i860-SVR4 vendors below as they are discovered.
+	  echo i860-unknown-sysv${UNAME_RELEASE}  # Unknown i860-SVR4
+	fi
+	exit 0 ;;
+    mini*:CTIX:SYS*5:*)
+	# "miniframe"
+	echo m68010-convergent-sysv
+	exit 0 ;;
+    mc68k:UNIX:SYSTEM5:3.51m)
+	echo m68k-convergent-sysv
+	exit 0 ;;
+    M680?0:D-NIX:5.3:*)
+	echo m68k-diab-dnix
+	exit 0 ;;
+    M68*:*:R3V[5678]*:*)
+	test -r /sysV68 && echo 'm68k-motorola-sysv' && exit 0 ;;
+    3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
+	OS_REL=''
+	test -r /etc/.relid \
+	&& OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && echo i486-ncr-sysv4.3${OS_REL} && exit 0
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	  && echo i586-ncr-sysv4.3${OS_REL} && exit 0 ;;
+    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
+        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+          && echo i486-ncr-sysv4 && exit 0 ;;
+    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
+	echo m68k-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    mc68030:UNIX_System_V:4.*:*)
+	echo m68k-atari-sysv4
+	exit 0 ;;
+    TSUNAMI:LynxOS:2.*:*)
+	echo sparc-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    rs6000:LynxOS:2.*:*)
+	echo rs6000-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.0*:*)
+	echo powerpc-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    SM[BE]S:UNIX_SV:*:*)
+	echo mips-dde-sysv${UNAME_RELEASE}
+	exit 0 ;;
+    RM*:ReliantUNIX-*:*:*)
+	echo mips-sni-sysv4
+	exit 0 ;;
+    RM*:SINIX-*:*:*)
+	echo mips-sni-sysv4
+	exit 0 ;;
+    *:SINIX-*:*:*)
+	if uname -p 2>/dev/null >/dev/null ; then
+		UNAME_MACHINE=`(uname -p) 2>/dev/null`
+		echo ${UNAME_MACHINE}-sni-sysv4
+	else
+		echo ns32k-sni-sysv
+	fi
+	exit 0 ;;
+    PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+                      # says <Richard.M.Bartel@ccMail.Census.GOV>
+        echo i586-unisys-sysv4
+        exit 0 ;;
+    *:UNIX_System_V:4*:FTX*)
+	# From Gerald Hewes <hewes@openmarket.com>.
+	# How about differentiating between stratus architectures? -djm
+	echo hppa1.1-stratus-sysv4
+	exit 0 ;;
+    *:*:*:FTX*)
+	# From seanf@swdc.stratus.com.
+	echo i860-stratus-sysv4
+	exit 0 ;;
+    *:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	echo hppa1.1-stratus-vos
+	exit 0 ;;
+    mc68*:A/UX:*:*)
+	echo m68k-apple-aux${UNAME_RELEASE}
+	exit 0 ;;
+    news*:NEWS-OS:6*:*)
+	echo mips-sony-newsos6
+	exit 0 ;;
+    R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
+	if [ -d /usr/nec ]; then
+	        echo mips-nec-sysv${UNAME_RELEASE}
+	else
+	        echo mips-unknown-sysv${UNAME_RELEASE}
+	fi
+        exit 0 ;;
+    BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
+	echo powerpc-be-beos
+	exit 0 ;;
+    BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
+	echo powerpc-apple-beos
+	exit 0 ;;
+    BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
+	echo i586-pc-beos
+	exit 0 ;;
+    SX-4:SUPER-UX:*:*)
+	echo sx4-nec-superux${UNAME_RELEASE}
+	exit 0 ;;
+    SX-5:SUPER-UX:*:*)
+	echo sx5-nec-superux${UNAME_RELEASE}
+	exit 0 ;;
+    SX-6:SUPER-UX:*:*)
+	echo sx6-nec-superux${UNAME_RELEASE}
+	exit 0 ;;
+    Power*:Rhapsody:*:*)
+	echo powerpc-apple-rhapsody${UNAME_RELEASE}
+	exit 0 ;;
+    *:Rhapsody:*:*)
+	echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE}
+	exit 0 ;;
+    *:Darwin:*:*)
+	UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
+	case $UNAME_PROCESSOR in
+	    *86) UNAME_PROCESSOR=i686 ;;
+	    unknown) UNAME_PROCESSOR=powerpc ;;
+	esac
+	echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
+	exit 0 ;;
+    *:procnto*:*:* | *:QNX:[0123456789]*:*)
+	UNAME_PROCESSOR=`uname -p`
+	if test "$UNAME_PROCESSOR" = "x86"; then
+		UNAME_PROCESSOR=i386
+		UNAME_MACHINE=pc
+	fi
+	echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE}
+	exit 0 ;;
+    *:QNX:*:4*)
+	echo i386-pc-qnx
+	exit 0 ;;
+    NSR-?:NONSTOP_KERNEL:*:*)
+	echo nsr-tandem-nsk${UNAME_RELEASE}
+	exit 0 ;;
+    *:NonStop-UX:*:*)
+	echo mips-compaq-nonstopux
+	exit 0 ;;
+    BS2000:POSIX*:*:*)
+	echo bs2000-siemens-sysv
+	exit 0 ;;
+    DS/*:UNIX_System_V:*:*)
+	echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE}
+	exit 0 ;;
+    *:Plan9:*:*)
+	# "uname -m" is not consistent, so use $cputype instead. 386
+	# is converted to i386 for consistency with other x86
+	# operating systems.
+	if test "$cputype" = "386"; then
+	    UNAME_MACHINE=i386
+	else
+	    UNAME_MACHINE="$cputype"
+	fi
+	echo ${UNAME_MACHINE}-unknown-plan9
+	exit 0 ;;
+    *:TOPS-10:*:*)
+	echo pdp10-unknown-tops10
+	exit 0 ;;
+    *:TENEX:*:*)
+	echo pdp10-unknown-tenex
+	exit 0 ;;
+    KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
+	echo pdp10-dec-tops20
+	exit 0 ;;
+    XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
+	echo pdp10-xkl-tops20
+	exit 0 ;;
+    *:TOPS-20:*:*)
+	echo pdp10-unknown-tops20
+	exit 0 ;;
+    *:ITS:*:*)
+	echo pdp10-unknown-its
+	exit 0 ;;
+    SEI:*:*:SEIUX)
+        echo mips-sei-seiux${UNAME_RELEASE}
+	exit 0 ;;
+    *:DragonFly:*:*)
+	echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
+	exit 0 ;;
+    *:*VMS:*:*)
+    	UNAME_MACHINE=`(uname -p) 2>/dev/null`
+	case "${UNAME_MACHINE}" in
+	    A*) echo alpha-dec-vms && exit 0 ;;
+	    I*) echo ia64-dec-vms && exit 0 ;;
+	    V*) echo vax-dec-vms && exit 0 ;;
+	esac
+esac
+
+#echo '(No uname command or uname output not recognized.)' 1>&2
+#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2
+
+eval $set_cc_for_build
+cat >$dummy.c <<EOF
+#ifdef _SEQUENT_
+# include <sys/types.h>
+# include <sys/utsname.h>
+#endif
+main ()
+{
+#if defined (sony)
+#if defined (MIPSEB)
+  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
+     I don't know....  */
+  printf ("mips-sony-bsd\n"); exit (0);
+#else
+#include <sys/param.h>
+  printf ("m68k-sony-newsos%s\n",
+#ifdef NEWSOS4
+          "4"
+#else
+	  ""
+#endif
+         ); exit (0);
+#endif
+#endif
+
+#if defined (__arm) && defined (__acorn) && defined (__unix)
+  printf ("arm-acorn-riscix"); exit (0);
+#endif
+
+#if defined (hp300) && !defined (hpux)
+  printf ("m68k-hp-bsd\n"); exit (0);
+#endif
+
+#if defined (NeXT)
+#if !defined (__ARCHITECTURE__)
+#define __ARCHITECTURE__ "m68k"
+#endif
+  int version;
+  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
+  if (version < 4)
+    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
+  else
+    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
+  exit (0);
+#endif
+
+#if defined (MULTIMAX) || defined (n16)
+#if defined (UMAXV)
+  printf ("ns32k-encore-sysv\n"); exit (0);
+#else
+#if defined (CMU)
+  printf ("ns32k-encore-mach\n"); exit (0);
+#else
+  printf ("ns32k-encore-bsd\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (__386BSD__)
+  printf ("i386-pc-bsd\n"); exit (0);
+#endif
+
+#if defined (sequent)
+#if defined (i386)
+  printf ("i386-sequent-dynix\n"); exit (0);
+#endif
+#if defined (ns32000)
+  printf ("ns32k-sequent-dynix\n"); exit (0);
+#endif
+#endif
+
+#if defined (_SEQUENT_)
+    struct utsname un;
+
+    uname(&un);
+
+    if (strncmp(un.version, "V2", 2) == 0) {
+	printf ("i386-sequent-ptx2\n"); exit (0);
+    }
+    if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
+	printf ("i386-sequent-ptx1\n"); exit (0);
+    }
+    printf ("i386-sequent-ptx\n"); exit (0);
+
+#endif
+
+#if defined (vax)
+# if !defined (ultrix)
+#  include <sys/param.h>
+#  if defined (BSD)
+#   if BSD == 43
+      printf ("vax-dec-bsd4.3\n"); exit (0);
+#   else
+#    if BSD == 199006
+      printf ("vax-dec-bsd4.3reno\n"); exit (0);
+#    else
+      printf ("vax-dec-bsd\n"); exit (0);
+#    endif
+#   endif
+#  else
+    printf ("vax-dec-bsd\n"); exit (0);
+#  endif
+# else
+    printf ("vax-dec-ultrix\n"); exit (0);
+# endif
+#endif
+
+#if defined (alliant) && defined (i860)
+  printf ("i860-alliant-bsd\n"); exit (0);
+#endif
+
+  exit (1);
+}
+EOF
+
+$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && $dummy && exit 0
+
+# Apollos put the system type in the environment.
+
+test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit 0; }
+
+# Convex versions that predate uname can use getsysinfo(1)
+
+if [ -x /usr/convex/getsysinfo ]
+then
+    case `getsysinfo -f cpu_type` in
+    c1*)
+	echo c1-convex-bsd
+	exit 0 ;;
+    c2*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+	exit 0 ;;
+    c34*)
+	echo c34-convex-bsd
+	exit 0 ;;
+    c38*)
+	echo c38-convex-bsd
+	exit 0 ;;
+    c4*)
+	echo c4-convex-bsd
+	exit 0 ;;
+    esac
+fi
+
+cat >&2 <<EOF
+$0: unable to guess system type
+
+This script, last modified $timestamp, has failed to recognize
+the operating system you are using. It is advised that you
+download the most up to date version of the config scripts from
+
+    ftp://ftp.gnu.org/pub/gnu/config/
+
+If the version you run ($0) is already up to date, please
+send the following data and any information you think might be
+pertinent to <config-patches@gnu.org> in order to provide the needed
+information to handle your system.
+
+config.guess timestamp = $timestamp
+
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null`
+
+hostinfo               = `(hostinfo) 2>/dev/null`
+/bin/universe          = `(/bin/universe) 2>/dev/null`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null`
+/bin/arch              = `(/bin/arch) 2>/dev/null`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
+
+UNAME_MACHINE = ${UNAME_MACHINE}
+UNAME_RELEASE = ${UNAME_RELEASE}
+UNAME_SYSTEM  = ${UNAME_SYSTEM}
+UNAME_VERSION = ${UNAME_VERSION}
+EOF
+
+exit 1
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/src/sed/config/config.rpath b/src/sed/config/config.rpath
new file mode 100755
index 0000000..dfcdbe8
--- /dev/null
+++ b/src/sed/config/config.rpath
@@ -0,0 +1,497 @@
+#! /bin/sh
+# Output a system dependent set of variables, describing how to set the
+# run time search path of shared libraries in an executable.
+#
+#   Copyright 1996-2002 Free Software Foundation, Inc.
+#   Taken from GNU libtool, 2001
+#   Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#   General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program; if not, write to the Free Software
+#   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+#   As a special exception to the GNU General Public License, if you
+#   distribute this file as part of a program that contains a
+#   configuration script generated by Autoconf, you may include it under
+#   the same distribution terms that you use for the rest of that program.
+#
+# The first argument passed to this file is the canonical host specification,
+#    CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or
+#    CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# The environment variables CC, GCC, LDFLAGS, LD, with_gnu_ld
+# should be set by the caller.
+#
+# The set of defined variables is at the end of this script.
+
+# All known linkers require a `.a' archive for static linking (except M$VC,
+# which needs '.lib').
+libext=a
+shlibext=
+
+host="$1"
+host_cpu=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+host_vendor=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+host_os=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+wl=
+if test "$GCC" = yes; then
+  wl='-Wl,'
+else
+  case "$host_os" in
+    aix3* | aix4* | aix5*)
+      if test "$host_cpu" = ia64; then
+        wl='-Wl,'
+      fi
+      ;;
+    hpux9* | hpux10* | hpux11*)
+      wl='-Wl,'
+      ;;
+    irix5* | irix6*)
+      wl='-Wl,'
+      ;;
+    linux*)
+      echo '__INTEL_COMPILER' > conftest.$ac_ext
+      if $CC -E conftest.$ac_ext >/dev/null | grep __INTEL_COMPILER >/dev/null
+      then
+        :
+      else
+        # Intel icc
+        wl='-Qoption,ld,'
+      fi
+      ;;
+    osf3* | osf4* | osf5*)
+      wl='-Wl,'
+      ;;
+    solaris*)
+      wl='-Wl,'
+      ;;
+    sunos4*)
+      wl='-Qoption ld '
+      ;;
+    sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+      if test "x$host_vendor" = xsni; then
+        wl='-LD'
+      else
+        wl='-Wl,'
+      fi
+      ;;
+  esac
+fi
+
+hardcode_libdir_flag_spec=
+hardcode_libdir_separator=
+hardcode_direct=no
+hardcode_minus_L=no
+
+case "$host_os" in
+  cygwin* | mingw* | pw32* )
+    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # When not using gcc, we currently assume that we are using
+    # Microsoft Visual C++.
+    if test "$GCC" != yes; then
+      with_gnu_ld=no
+    fi
+    ;;
+esac
+
+ld_shlibs=yes
+if test "$with_gnu_ld" = yes; then
+  case "$host_os" in
+    aix3* | aix4* | aix5*)
+      # On AIX, the GNU linker is very broken
+      ld_shlibs=no
+      ;;
+    amigaos*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      # Samuel A. Falvo II <kc5tja@dolphin.openprojects.net> reports
+      # that the semantics of dynamic libraries on AmigaOS, at least up
+      # to version 4, is to share data among multiple programs linked
+      # with the same dynamic library.  Since this doesn't match the
+      # behavior of shared libraries on other platforms, we can use
+      # them.
+      ld_shlibs=no
+      ;;
+    beos*)
+      if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    cygwin* | mingw* | pw32*)
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    solaris* | sysv5*)
+      if $LD -v 2>&1 | egrep 'BFD 2\.8' > /dev/null; then
+        ld_shlibs=no
+      elif $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    sunos4*)
+      hardcode_direct=yes
+      ;;
+    *)
+      if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+  esac
+  if test "$ld_shlibs" = yes; then
+    hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+  fi
+else
+  case "$host_os" in
+    aix3*)
+      # Note: this linker hardcodes the directories in LIBPATH if there
+      # are no directories specified by -L.
+      hardcode_minus_L=yes
+      if test "$GCC" = yes; then
+        # Neither direct hardcoding nor static linking is supported with a
+        # broken collect2.
+        hardcode_direct=unsupported
+      fi
+      ;;
+    aix4* | aix5*)
+      hardcode_libdir_separator=':'
+      if test "$GCC" = yes; then
+        collect2name=`${CC} -print-prog-name=collect2`
+        if test -f "$collect2name" && \
+          strings "$collect2name" | grep resolve_lib_name >/dev/null
+        then
+          # We have reworked collect2
+          hardcode_direct=yes
+        else
+          # We have old collect2
+          hardcode_direct=unsupported
+          hardcode_minus_L=yes
+          hardcode_libdir_flag_spec='-L$libdir'
+          hardcode_libdir_separator=
+        fi
+      else
+        hardcode_direct=yes
+      fi
+      if test "$host_cpu" = ia64; then
+        # On IA64, the linker does run time linking by default, so we don't
+        # have to do anything special.
+        aix_use_runtimelinking=no
+      else
+        # Test if we are trying to use run time linking, or normal AIX style linking.
+        # If -brtl is somewhere in LDFLAGS, we need to do run time linking.
+        aix_use_runtimelinking=no
+        for ld_flag in $LDFLAGS; do
+          if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl" ); then
+            aix_use_runtimelinking=yes
+            break
+          fi
+        done
+      fi
+      if test "$aix_use_runtimelinking" = yes; then
+        hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib'
+      else
+        if test "$host_cpu" = ia64; then
+          hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
+        else
+          hardcode_libdir_flag_spec='${wl}-bnolibpath ${wl}-blibpath:$libdir:/usr/lib:/lib'
+        fi
+      fi
+      ;;
+    amigaos*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      # see comment about different semantics on the GNU ld section
+      ld_shlibs=no
+      ;;
+    cygwin* | mingw* | pw32*)
+      # When not using gcc, we currently assume that we are using
+      # Microsoft Visual C++.
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec=' '
+      libext=lib
+      ;;
+    darwin* | rhapsody*)
+      hardcode_direct=yes
+      ;;
+    freebsd1*)
+      ld_shlibs=no
+      ;;
+    freebsd2.2*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    freebsd2*)
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      ;;
+    freebsd*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    hpux9* | hpux10* | hpux11*)
+      hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+      hardcode_libdir_separator=:
+      hardcode_direct=yes
+      hardcode_minus_L=yes # Not in the search PATH, but as the default
+                           # location of the library.
+      ;;
+    irix5* | irix6*)
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    netbsd*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    newsos6)
+      hardcode_direct=yes
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    openbsd*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    os2*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      ;;
+    osf3*)
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    osf4* | osf5*)
+      if test "$GCC" = yes; then
+        hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      else
+        # Both cc and cxx compiler support -rpath directly
+        hardcode_libdir_flag_spec='-rpath $libdir'
+      fi
+      hardcode_libdir_separator=:
+      ;;
+    sco3.2v5*)
+      ;;
+    solaris*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      ;;
+    sunos4*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      ;;
+    sysv4)
+      if test "x$host_vendor" = xsno; then
+        hardcode_direct=yes # is this really true???
+      else
+        hardcode_direct=no # Motorola manual says yes, but my tests say they lie
+      fi
+      ;;
+    sysv4.3*)
+      ;;
+    sysv5*)
+      hardcode_libdir_flag_spec=
+      ;;
+    uts4*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    dgux*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    sysv4*MP*)
+      if test -d /usr/nec; then
+        ld_shlibs=yes
+      fi
+      ;;
+    sysv4.2uw2*)
+      hardcode_direct=yes
+      hardcode_minus_L=no
+      ;;
+    sysv5uw7* | unixware7*)
+      ;;
+    *)
+      ld_shlibs=no
+      ;;
+  esac
+fi
+
+# Check dynamic linker characteristics
+libname_spec='lib$name'
+sys_lib_dlsearch_path_spec="/lib /usr/lib"
+sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
+case "$host_os" in
+  aix3*)
+    shlibext=so
+    ;;
+  aix4* | aix5*)
+    shlibext=so
+    ;;
+  amigaos*)
+    shlibext=ixlibrary
+    ;;
+  beos*)
+    shlibext=so
+    ;;
+  bsdi4*)
+    shlibext=so
+    sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
+    sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
+    ;;
+  cygwin* | mingw* | pw32*)
+    case $GCC,$host_os in
+      yes,cygwin*)
+        shlibext=dll.a
+        ;;
+      yes,mingw*)
+        shlibext=dll
+        sys_lib_search_path_spec=`$CC -print-search-dirs | grep "^libraries:" | sed -e "s/^libraries://" -e "s/;/ /g"`
+        ;;
+      yes,pw32*)
+        shlibext=dll
+        ;;
+      *)
+        shlibext=dll
+        ;;
+    esac
+    ;;
+  darwin* | rhapsody*)
+    shlibext=dylib
+    ;;
+  freebsd1*)
+    ;;
+  freebsd*)
+    shlibext=so
+    ;;
+  gnu*)
+    shlibext=so
+    ;;
+  hpux9* | hpux10* | hpux11*)
+    shlibext=sl
+    ;;
+  irix5* | irix6*)
+    shlibext=so
+    case "$host_os" in
+      irix5*)
+        libsuff= shlibsuff=
+        ;;
+      *)
+        case $LD in
+          *-32|*"-32 ") libsuff= shlibsuff= ;;
+          *-n32|*"-n32 ") libsuff=32 shlibsuff=N32 ;;
+          *-64|*"-64 ") libsuff=64 shlibsuff=64 ;;
+          *) libsuff= shlibsuff= ;;
+        esac
+        ;;
+    esac
+    sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
+    sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
+    ;;
+  linux-gnuoldld* | linux-gnuaout* | linux-gnucoff*)
+    ;;
+  linux-gnu*)
+    shlibext=so
+    ;;
+  netbsd*)
+    shlibext=so
+    ;;
+  newsos6)
+    shlibext=so
+    ;;
+  openbsd*)
+    shlibext=so
+    ;;
+  os2*)
+    libname_spec='$name'
+    shlibext=dll
+    ;;
+  osf3* | osf4* | osf5*)
+    shlibext=so
+    sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
+    sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
+    ;;
+  sco3.2v5*)
+    shlibext=so
+    ;;
+  solaris*)
+    shlibext=so
+    ;;
+  sunos4*)
+    shlibext=so
+    ;;
+  sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+    shlibext=so
+    case "$host_vendor" in
+      motorola)
+        sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
+        ;;
+    esac
+    ;;
+  uts4*)
+    shlibext=so
+    ;;
+  dgux*)
+    shlibext=so
+    ;;
+  sysv4*MP*)
+    if test -d /usr/nec; then
+      shlibext=so
+    fi
+    ;;
+esac
+
+sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
+escaped_wl=`echo "X$wl" | sed -e 's/^X//' -e "$sed_quote_subst"`
+escaped_hardcode_libdir_flag_spec=`echo "X$hardcode_libdir_flag_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+escaped_sys_lib_search_path_spec=`echo "X$sys_lib_search_path_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+escaped_sys_lib_dlsearch_path_spec=`echo "X$sys_lib_dlsearch_path_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+
+sed -e 's/^\([a-zA-Z0-9_]*\)=/acl_cv_\1=/' <<EOF
+
+# How to pass a linker flag through the compiler.
+wl="$escaped_wl"
+
+# Static library suffix (normally "a").
+libext="$libext"
+
+# Shared library suffix (normally "so").
+shlibext="$shlibext"
+
+# Flag to hardcode \$libdir into a binary during linking.
+# This must work even if \$libdir does not exist.
+hardcode_libdir_flag_spec="$escaped_hardcode_libdir_flag_spec"
+
+# Whether we need a single -rpath flag with a separated argument.
+hardcode_libdir_separator="$hardcode_libdir_separator"
+
+# Set to yes if using DIR/libNAME.so during linking hardcodes DIR into the
+# resulting binary.
+hardcode_direct="$hardcode_direct"
+
+# Set to yes if using the -LDIR flag during linking hardcodes DIR into the
+# resulting binary.
+hardcode_minus_L="$hardcode_minus_L"
+
+# Compile-time system search path for libraries
+sys_lib_search_path_spec="$escaped_sys_lib_search_path_spec"
+
+# Run-time system search path for libraries
+sys_lib_dlsearch_path_spec="$escaped_sys_lib_dlsearch_path_spec"
+
+EOF
diff --git a/src/sed/config/config.sub b/src/sed/config/config.sub
new file mode 100755
index 0000000..095b56f
--- /dev/null
+++ b/src/sed/config/config.sub
@@ -0,0 +1,1552 @@
+#! /bin/sh
+# Configuration validation subroutine script.
+#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+#   2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+
+timestamp='2004-06-24'
+
+# This file is (in principle) common to ALL GNU software.
+# The presence of a machine in this file suggests that SOME GNU software
+# can handle that machine.  It does not imply ALL GNU software can.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301, USA.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Please send patches to <config-patches@gnu.org>.  Submit a context
+# diff and a properly formatted ChangeLog entry.
+#
+# Configuration subroutine to validate and canonicalize a configuration type.
+# Supply the specified configuration type as an argument.
+# If it is invalid, we print an error message on stderr and exit with code 1.
+# Otherwise, we print the canonical config type on stdout and succeed.
+
+# This file is supposed to be the same for all GNU packages
+# and recognize all the CPU types, system types and aliases
+# that are meaningful with *any* GNU software.
+# Each package is responsible for reporting which valid configurations
+# it does not support.  The user should be able to distinguish
+# a failure to support a valid configuration from a meaningless
+# configuration.
+
+# The goal of this file is to map all the various variations of a given
+# machine specification into a single specification in the form:
+#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or in some cases, the newer four-part form:
+#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# It is wrong to echo any other type of specification.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS
+       $0 [OPTION] ALIAS
+
+Canonicalize a configuration name.
+
+Operation modes:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.sub ($timestamp)
+
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit 0 ;;
+    --version | -v )
+       echo "$version" ; exit 0 ;;
+    --help | --h* | -h )
+       echo "$usage"; exit 0 ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help"
+       exit 1 ;;
+
+    *local*)
+       # First pass through any local machine types.
+       echo $1
+       exit 0;;
+
+    * )
+       break ;;
+  esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+    exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+    exit 1;;
+esac
+
+# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).
+# Here we must recognize all the valid KERNEL-OS combinations.
+maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
+case $maybe_os in
+  nto-qnx* | linux-gnu* | linux-dietlibc | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | \
+  kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | storm-chaos* | os2-emx* | rtmk-nova*)
+    os=-$maybe_os
+    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
+    ;;
+  *)
+    basic_machine=`echo $1 | sed 's/-[^-]*$//'`
+    if [ $basic_machine != $1 ]
+    then os=`echo $1 | sed 's/.*-/-/'`
+    else os=; fi
+    ;;
+esac
+
+### Let's recognize common machines as not being operating systems so
+### that things like config.sub decstation-3100 work.  We also
+### recognize some manufacturers as not being operating systems, so we
+### can provide default operating systems below.
+case $os in
+	-sun*os*)
+		# Prevent following clause from handling this invalid input.
+		;;
+	-dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \
+	-att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \
+	-unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \
+	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
+	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
+	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
+	-apple | -axis | -knuth | -cray)
+		os=
+		basic_machine=$1
+		;;
+	-sim | -cisco | -oki | -wec | -winbond)
+		os=
+		basic_machine=$1
+		;;
+	-scout)
+		;;
+	-wrs)
+		os=-vxworks
+		basic_machine=$1
+		;;
+	-chorusos*)
+		os=-chorusos
+		basic_machine=$1
+		;;
+ 	-chorusrdb)
+ 		os=-chorusrdb
+		basic_machine=$1
+ 		;;
+	-hiux*)
+		os=-hiuxwe2
+		;;
+	-sco5)
+		os=-sco3.2v5
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco4)
+		os=-sco3.2v4
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco3.2.[4-9]*)
+		os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco3.2v[4-9]*)
+		# Don't forget version if it is 3.2v4 or newer.
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco*)
+		os=-sco3.2v2
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-udk*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-isc)
+		os=-isc2.2
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-clix*)
+		basic_machine=clipper-intergraph
+		;;
+	-isc*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-lynx*)
+		os=-lynxos
+		;;
+	-ptx*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'`
+		;;
+	-windowsnt*)
+		os=`echo $os | sed -e 's/windowsnt/winnt/'`
+		;;
+	-psos*)
+		os=-psos
+		;;
+	-mint | -mint[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
+		;;
+esac
+
+# Decode aliases for certain CPU-COMPANY combinations.
+case $basic_machine in
+	# Recognize the basic CPU types without company name.
+	# Some are omitted here because they have special meanings below.
+	1750a | 580 \
+	| a29k \
+	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
+	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
+	| am33_2.0 \
+	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr \
+	| c4x | clipper \
+	| d10v | d30v | dlx | dsp16xx \
+	| fr30 | frv \
+	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+	| i370 | i860 | i960 | ia64 \
+	| ip2k | iq2000 \
+	| m32r | m32rle | m68000 | m68k | m88k | mcore \
+	| mips | mipsbe | mipseb | mipsel | mipsle \
+	| mips16 \
+	| mips64 | mips64el \
+	| mips64vr | mips64vrel \
+	| mips64orion | mips64orionel \
+	| mips64vr4100 | mips64vr4100el \
+	| mips64vr4300 | mips64vr4300el \
+	| mips64vr5000 | mips64vr5000el \
+	| mipsisa32 | mipsisa32el \
+	| mipsisa32r2 | mipsisa32r2el \
+	| mipsisa64 | mipsisa64el \
+	| mipsisa64r2 | mipsisa64r2el \
+	| mipsisa64sb1 | mipsisa64sb1el \
+	| mipsisa64sr71k | mipsisa64sr71kel \
+	| mipstx39 | mipstx39el \
+	| mn10200 | mn10300 \
+	| msp430 \
+	| ns16k | ns32k \
+	| openrisc | or32 \
+	| pdp10 | pdp11 | pj | pjl \
+	| powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
+	| pyramid \
+	| sh | sh[1234] | sh[23]e | sh[34]eb | shbe | shle | sh[1234]le | sh3ele \
+	| sh64 | sh64le \
+	| sparc | sparc64 | sparc86x | sparclet | sparclite | sparcv8 | sparcv9 | sparcv9b \
+	| strongarm \
+	| tahoe | thumb | tic4x | tic80 | tron \
+	| v850 | v850e \
+	| we32k \
+	| x86 | xscale | xstormy16 | xtensa \
+	| z8k)
+		basic_machine=$basic_machine-unknown
+		;;
+	m6811 | m68hc11 | m6812 | m68hc12)
+		# Motorola 68HC11/12.
+		basic_machine=$basic_machine-unknown
+		os=-none
+		;;
+	m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k)
+		;;
+
+	# We use `pc' rather than `unknown'
+	# because (1) that's what they normally are, and
+	# (2) the word "unknown" tends to confuse beginning users.
+	i*86 | x86_64)
+	  basic_machine=$basic_machine-pc
+	  ;;
+	# Object if more than one company name word.
+	*-*-*)
+		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+		exit 1
+		;;
+	# Recognize the basic CPU types with company name.
+	580-* \
+	| a29k-* \
+	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
+	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
+	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
+	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
+	| avr-* \
+	| bs2000-* \
+	| c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \
+	| clipper-* | craynv-* | cydra-* \
+	| d10v-* | d30v-* | dlx-* \
+	| elxsi-* \
+	| f30[01]-* | f700-* | fr30-* | frv-* | fx80-* \
+	| h8300-* | h8500-* \
+	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
+	| i*86-* | i860-* | i960-* | ia64-* \
+	| ip2k-* | iq2000-* \
+	| m32r-* | m32rle-* \
+	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
+	| m88110-* | m88k-* | mcore-* \
+	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
+	| mips16-* \
+	| mips64-* | mips64el-* \
+	| mips64vr-* | mips64vrel-* \
+	| mips64orion-* | mips64orionel-* \
+	| mips64vr4100-* | mips64vr4100el-* \
+	| mips64vr4300-* | mips64vr4300el-* \
+	| mips64vr5000-* | mips64vr5000el-* \
+	| mipsisa32-* | mipsisa32el-* \
+	| mipsisa32r2-* | mipsisa32r2el-* \
+	| mipsisa64-* | mipsisa64el-* \
+	| mipsisa64r2-* | mipsisa64r2el-* \
+	| mipsisa64sb1-* | mipsisa64sb1el-* \
+	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
+	| mipstx39-* | mipstx39el-* \
+	| mmix-* \
+	| msp430-* \
+	| none-* | np1-* | ns16k-* | ns32k-* \
+	| orion-* \
+	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
+	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
+	| pyramid-* \
+	| romp-* | rs6000-* \
+	| sh-* | sh[1234]-* | sh[23]e-* | sh[34]eb-* | shbe-* \
+	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
+	| sparc-* | sparc64-* | sparc86x-* | sparclet-* | sparclite-* \
+	| sparcv8-* | sparcv9-* | sparcv9b-* | strongarm-* | sv1-* | sx?-* \
+	| tahoe-* | thumb-* \
+	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
+	| tron-* \
+	| v850-* | v850e-* | vax-* \
+	| we32k-* \
+	| x86-* | x86_64-* | xps100-* | xscale-* | xstormy16-* \
+	| xtensa-* \
+	| ymp-* \
+	| z8k-*)
+		;;
+	# Recognize the various machine names and aliases which stand
+	# for a CPU type and a company and sometimes even an OS.
+	386bsd)
+		basic_machine=i386-unknown
+		os=-bsd
+		;;
+	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+		basic_machine=m68000-att
+		;;
+	3b*)
+		basic_machine=we32k-att
+		;;
+	a29khif)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+    	abacus)
+		basic_machine=abacus-unknown
+		;;
+	adobe68k)
+		basic_machine=m68010-adobe
+		os=-scout
+		;;
+	alliant | fx80)
+		basic_machine=fx80-alliant
+		;;
+	altos | altos3068)
+		basic_machine=m68k-altos
+		;;
+	am29k)
+		basic_machine=a29k-none
+		os=-bsd
+		;;
+	amd64)
+		basic_machine=x86_64-pc
+		;;
+	amd64-*)
+		basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	amdahl)
+		basic_machine=580-amdahl
+		os=-sysv
+		;;
+	amiga | amiga-*)
+		basic_machine=m68k-unknown
+		;;
+	amigaos | amigados)
+		basic_machine=m68k-unknown
+		os=-amigaos
+		;;
+	amigaunix | amix)
+		basic_machine=m68k-unknown
+		os=-sysv4
+		;;
+	apollo68)
+		basic_machine=m68k-apollo
+		os=-sysv
+		;;
+	apollo68bsd)
+		basic_machine=m68k-apollo
+		os=-bsd
+		;;
+	aux)
+		basic_machine=m68k-apple
+		os=-aux
+		;;
+	balance)
+		basic_machine=ns32k-sequent
+		os=-dynix
+		;;
+	c90)
+		basic_machine=c90-cray
+		os=-unicos
+		;;
+	convex-c1)
+		basic_machine=c1-convex
+		os=-bsd
+		;;
+	convex-c2)
+		basic_machine=c2-convex
+		os=-bsd
+		;;
+	convex-c32)
+		basic_machine=c32-convex
+		os=-bsd
+		;;
+	convex-c34)
+		basic_machine=c34-convex
+		os=-bsd
+		;;
+	convex-c38)
+		basic_machine=c38-convex
+		os=-bsd
+		;;
+	cray | j90)
+		basic_machine=j90-cray
+		os=-unicos
+		;;
+	craynv)
+		basic_machine=craynv-cray
+		os=-unicosmp
+		;;
+	cr16c)
+		basic_machine=cr16c-unknown
+		os=-elf
+		;;
+	crds | unos)
+		basic_machine=m68k-crds
+		;;
+	cris | cris-* | etrax*)
+		basic_machine=cris-axis
+		;;
+	crx)
+		basic_machine=crx-unknown
+		os=-elf
+		;;
+	da30 | da30-*)
+		basic_machine=m68k-da30
+		;;
+	decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
+		basic_machine=mips-dec
+		;;
+	decsystem10* | dec10*)
+		basic_machine=pdp10-dec
+		os=-tops10
+		;;
+	decsystem20* | dec20*)
+		basic_machine=pdp10-dec
+		os=-tops20
+		;;
+	delta | 3300 | motorola-3300 | motorola-delta \
+	      | 3300-motorola | delta-motorola)
+		basic_machine=m68k-motorola
+		;;
+	delta88)
+		basic_machine=m88k-motorola
+		os=-sysv3
+		;;
+	dpx20 | dpx20-*)
+		basic_machine=rs6000-bull
+		os=-bosx
+		;;
+	dpx2* | dpx2*-bull)
+		basic_machine=m68k-bull
+		os=-sysv3
+		;;
+	ebmon29k)
+		basic_machine=a29k-amd
+		os=-ebmon
+		;;
+	elxsi)
+		basic_machine=elxsi-elxsi
+		os=-bsd
+		;;
+	encore | umax | mmax)
+		basic_machine=ns32k-encore
+		;;
+	es1800 | OSE68k | ose68k | ose | OSE)
+		basic_machine=m68k-ericsson
+		os=-ose
+		;;
+	fx2800)
+		basic_machine=i860-alliant
+		;;
+	genix)
+		basic_machine=ns32k-ns
+		;;
+	gmicro)
+		basic_machine=tron-gmicro
+		os=-sysv
+		;;
+	go32)
+		basic_machine=i386-pc
+		os=-go32
+		;;
+	h3050r* | hiux*)
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	h8300hms)
+		basic_machine=h8300-hitachi
+		os=-hms
+		;;
+	h8300xray)
+		basic_machine=h8300-hitachi
+		os=-xray
+		;;
+	h8500hms)
+		basic_machine=h8500-hitachi
+		os=-hms
+		;;
+	harris)
+		basic_machine=m88k-harris
+		os=-sysv3
+		;;
+	hp300-*)
+		basic_machine=m68k-hp
+		;;
+	hp300bsd)
+		basic_machine=m68k-hp
+		os=-bsd
+		;;
+	hp300hpux)
+		basic_machine=m68k-hp
+		os=-hpux
+		;;
+	hp3k9[0-9][0-9] | hp9[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hp9k2[0-9][0-9] | hp9k31[0-9])
+		basic_machine=m68000-hp
+		;;
+	hp9k3[2-9][0-9])
+		basic_machine=m68k-hp
+		;;
+	hp9k6[0-9][0-9] | hp6[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hp9k7[0-79][0-9] | hp7[0-79][0-9])
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k78[0-9] | hp78[0-9])
+		# FIXME: really hppa2.0-hp
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
+		# FIXME: really hppa2.0-hp
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[0-9][13679] | hp8[0-9][13679])
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[0-9][0-9] | hp8[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hppa-next)
+		os=-nextstep3
+		;;
+	hppaosf)
+		basic_machine=hppa1.1-hp
+		os=-osf
+		;;
+	hppro)
+		basic_machine=hppa1.1-hp
+		os=-proelf
+		;;
+	i370-ibm* | ibm*)
+		basic_machine=i370-ibm
+		;;
+# I'm not sure what "Sysv32" means.  Should this be sysv3.2?
+	i*86v32)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv32
+		;;
+	i*86v4*)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv4
+		;;
+	i*86v)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv
+		;;
+	i*86sol2)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-solaris2
+		;;
+	i386mach)
+		basic_machine=i386-mach
+		os=-mach
+		;;
+	i386-vsta | vsta)
+		basic_machine=i386-unknown
+		os=-vsta
+		;;
+	iris | iris4d)
+		basic_machine=mips-sgi
+		case $os in
+		    -irix*)
+			;;
+		    *)
+			os=-irix4
+			;;
+		esac
+		;;
+	isi68 | isi)
+		basic_machine=m68k-isi
+		os=-sysv
+		;;
+	m88k-omron*)
+		basic_machine=m88k-omron
+		;;
+	magnum | m3230)
+		basic_machine=mips-mips
+		os=-sysv
+		;;
+	merlin)
+		basic_machine=ns32k-utek
+		os=-sysv
+		;;
+	mingw32)
+		basic_machine=i386-pc
+		os=-mingw32
+		;;
+	miniframe)
+		basic_machine=m68000-convergent
+		;;
+	*mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
+		;;
+	mips3*-*)
+		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
+		;;
+	mips3*)
+		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
+		;;
+	monitor)
+		basic_machine=m68k-rom68k
+		os=-coff
+		;;
+	morphos)
+		basic_machine=powerpc-unknown
+		os=-morphos
+		;;
+	msdos)
+		basic_machine=i386-pc
+		os=-msdos
+		;;
+	mvs)
+		basic_machine=i370-ibm
+		os=-mvs
+		;;
+	ncr3000)
+		basic_machine=i486-ncr
+		os=-sysv4
+		;;
+	netbsd386)
+		basic_machine=i386-unknown
+		os=-netbsd
+		;;
+	netwinder)
+		basic_machine=armv4l-rebel
+		os=-linux
+		;;
+	news | news700 | news800 | news900)
+		basic_machine=m68k-sony
+		os=-newsos
+		;;
+	news1000)
+		basic_machine=m68030-sony
+		os=-newsos
+		;;
+	news-3600 | risc-news)
+		basic_machine=mips-sony
+		os=-newsos
+		;;
+	necv70)
+		basic_machine=v70-nec
+		os=-sysv
+		;;
+	next | m*-next )
+		basic_machine=m68k-next
+		case $os in
+		    -nextstep* )
+			;;
+		    -ns2*)
+		      os=-nextstep2
+			;;
+		    *)
+		      os=-nextstep3
+			;;
+		esac
+		;;
+	nh3000)
+		basic_machine=m68k-harris
+		os=-cxux
+		;;
+	nh[45]000)
+		basic_machine=m88k-harris
+		os=-cxux
+		;;
+	nindy960)
+		basic_machine=i960-intel
+		os=-nindy
+		;;
+	mon960)
+		basic_machine=i960-intel
+		os=-mon960
+		;;
+	nonstopux)
+		basic_machine=mips-compaq
+		os=-nonstopux
+		;;
+	np1)
+		basic_machine=np1-gould
+		;;
+	nsr-tandem)
+		basic_machine=nsr-tandem
+		;;
+	op50n-* | op60c-*)
+		basic_machine=hppa1.1-oki
+		os=-proelf
+		;;
+	or32 | or32-*)
+		basic_machine=or32-unknown
+		os=-coff
+		;;
+	os400)
+		basic_machine=powerpc-ibm
+		os=-os400
+		;;
+	OSE68000 | ose68000)
+		basic_machine=m68000-ericsson
+		os=-ose
+		;;
+	os68k)
+		basic_machine=m68k-none
+		os=-os68k
+		;;
+	pa-hitachi)
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	paragon)
+		basic_machine=i860-intel
+		os=-osf
+		;;
+	pbd)
+		basic_machine=sparc-tti
+		;;
+	pbb)
+		basic_machine=m68k-tti
+		;;
+	pc532 | pc532-*)
+		basic_machine=ns32k-pc532
+		;;
+	pentium | p5 | k5 | k6 | nexgen | viac3)
+		basic_machine=i586-pc
+		;;
+	pentiumpro | p6 | 6x86 | athlon | athlon_*)
+		basic_machine=i686-pc
+		;;
+	pentiumii | pentium2 | pentiumiii | pentium3)
+		basic_machine=i686-pc
+		;;
+	pentium4)
+		basic_machine=i786-pc
+		;;
+	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+		basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentiumpro-* | p6-* | 6x86-* | athlon-*)
+		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentium4-*)
+		basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pn)
+		basic_machine=pn-gould
+		;;
+	power)	basic_machine=power-ibm
+		;;
+	ppc)	basic_machine=powerpc-unknown
+		;;
+	ppc-*)	basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppcle | powerpclittle | ppc-le | powerpc-little)
+		basic_machine=powerpcle-unknown
+		;;
+	ppcle-* | powerpclittle-*)
+		basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppc64)	basic_machine=powerpc64-unknown
+		;;
+	ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppc64le | powerpc64little | ppc64-le | powerpc64-little)
+		basic_machine=powerpc64le-unknown
+		;;
+	ppc64le-* | powerpc64little-*)
+		basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ps2)
+		basic_machine=i386-ibm
+		;;
+	pw32)
+		basic_machine=i586-unknown
+		os=-pw32
+		;;
+	rom68k)
+		basic_machine=m68k-rom68k
+		os=-coff
+		;;
+	rm[46]00)
+		basic_machine=mips-siemens
+		;;
+	rtpc | rtpc-*)
+		basic_machine=romp-ibm
+		;;
+	s390 | s390-*)
+		basic_machine=s390-ibm
+		;;
+	s390x | s390x-*)
+		basic_machine=s390x-ibm
+		;;
+	sa29200)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	sb1)
+		basic_machine=mipsisa64sb1-unknown
+		;;
+	sb1el)
+		basic_machine=mipsisa64sb1el-unknown
+		;;
+	sei)
+		basic_machine=mips-sei
+		os=-seiux
+		;;
+	sequent)
+		basic_machine=i386-sequent
+		;;
+	sh)
+		basic_machine=sh-hitachi
+		os=-hms
+		;;
+	sh64)
+		basic_machine=sh64-unknown
+		;;
+	sparclite-wrs | simso-wrs)
+		basic_machine=sparclite-wrs
+		os=-vxworks
+		;;
+	sps7)
+		basic_machine=m68k-bull
+		os=-sysv2
+		;;
+	spur)
+		basic_machine=spur-unknown
+		;;
+	st2000)
+		basic_machine=m68k-tandem
+		;;
+	stratus)
+		basic_machine=i860-stratus
+		os=-sysv4
+		;;
+	sun2)
+		basic_machine=m68000-sun
+		;;
+	sun2os3)
+		basic_machine=m68000-sun
+		os=-sunos3
+		;;
+	sun2os4)
+		basic_machine=m68000-sun
+		os=-sunos4
+		;;
+	sun3os3)
+		basic_machine=m68k-sun
+		os=-sunos3
+		;;
+	sun3os4)
+		basic_machine=m68k-sun
+		os=-sunos4
+		;;
+	sun4os3)
+		basic_machine=sparc-sun
+		os=-sunos3
+		;;
+	sun4os4)
+		basic_machine=sparc-sun
+		os=-sunos4
+		;;
+	sun4sol2)
+		basic_machine=sparc-sun
+		os=-solaris2
+		;;
+	sun3 | sun3-*)
+		basic_machine=m68k-sun
+		;;
+	sun4)
+		basic_machine=sparc-sun
+		;;
+	sun386 | sun386i | roadrunner)
+		basic_machine=i386-sun
+		;;
+	sv1)
+		basic_machine=sv1-cray
+		os=-unicos
+		;;
+	symmetry)
+		basic_machine=i386-sequent
+		os=-dynix
+		;;
+	t3e)
+		basic_machine=alphaev5-cray
+		os=-unicos
+		;;
+	t90)
+		basic_machine=t90-cray
+		os=-unicos
+		;;
+	tic54x | c54x*)
+		basic_machine=tic54x-unknown
+		os=-coff
+		;;
+	tic55x | c55x*)
+		basic_machine=tic55x-unknown
+		os=-coff
+		;;
+	tic6x | c6x*)
+		basic_machine=tic6x-unknown
+		os=-coff
+		;;
+	tx39)
+		basic_machine=mipstx39-unknown
+		;;
+	tx39el)
+		basic_machine=mipstx39el-unknown
+		;;
+	toad1)
+		basic_machine=pdp10-xkl
+		os=-tops20
+		;;
+	tower | tower-32)
+		basic_machine=m68k-ncr
+		;;
+	tpf)
+		basic_machine=s390x-ibm
+		os=-tpf
+		;;
+	udi29k)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	ultra3)
+		basic_machine=a29k-nyu
+		os=-sym1
+		;;
+	v810 | necv810)
+		basic_machine=v810-nec
+		os=-none
+		;;
+	vaxv)
+		basic_machine=vax-dec
+		os=-sysv
+		;;
+	vms)
+		basic_machine=vax-dec
+		os=-vms
+		;;
+	vpp*|vx|vx-*)
+		basic_machine=f301-fujitsu
+		;;
+	vxworks960)
+		basic_machine=i960-wrs
+		os=-vxworks
+		;;
+	vxworks68)
+		basic_machine=m68k-wrs
+		os=-vxworks
+		;;
+	vxworks29k)
+		basic_machine=a29k-wrs
+		os=-vxworks
+		;;
+	w65*)
+		basic_machine=w65-wdc
+		os=-none
+		;;
+	w89k-*)
+		basic_machine=hppa1.1-winbond
+		os=-proelf
+		;;
+	xps | xps100)
+		basic_machine=xps100-honeywell
+		;;
+	ymp)
+		basic_machine=ymp-cray
+		os=-unicos
+		;;
+	z8k-*-coff)
+		basic_machine=z8k-unknown
+		os=-sim
+		;;
+	none)
+		basic_machine=none-none
+		os=-none
+		;;
+
+# Here we handle the default manufacturer of certain CPU types.  It is in
+# some cases the only manufacturer, in others, it is the most popular.
+	w89k)
+		basic_machine=hppa1.1-winbond
+		;;
+	op50n)
+		basic_machine=hppa1.1-oki
+		;;
+	op60c)
+		basic_machine=hppa1.1-oki
+		;;
+	romp)
+		basic_machine=romp-ibm
+		;;
+	mmix)
+		basic_machine=mmix-knuth
+		;;
+	rs6000)
+		basic_machine=rs6000-ibm
+		;;
+	vax)
+		basic_machine=vax-dec
+		;;
+	pdp10)
+		# there are many clones, so DEC is not a safe bet
+		basic_machine=pdp10-unknown
+		;;
+	pdp11)
+		basic_machine=pdp11-dec
+		;;
+	we32k)
+		basic_machine=we32k-att
+		;;
+	sh3 | sh4 | sh[34]eb | sh[1234]le | sh[23]ele)
+		basic_machine=sh-unknown
+		;;
+	sh64)
+		basic_machine=sh64-unknown
+		;;
+	sparc | sparcv8 | sparcv9 | sparcv9b)
+		basic_machine=sparc-sun
+		;;
+	cydra)
+		basic_machine=cydra-cydrome
+		;;
+	orion)
+		basic_machine=orion-highlevel
+		;;
+	orion105)
+		basic_machine=clipper-highlevel
+		;;
+	mac | mpw | mac-mpw)
+		basic_machine=m68k-apple
+		;;
+	pmac | pmac-mpw)
+		basic_machine=powerpc-apple
+		;;
+	*-unknown)
+		# Make sure to match an already-canonicalized machine name.
+		;;
+	*)
+		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+		exit 1
+		;;
+esac
+
+# Here we canonicalize certain aliases for manufacturers.
+case $basic_machine in
+	*-digital*)
+		basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'`
+		;;
+	*-commodore*)
+		basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'`
+		;;
+	*)
+		;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if [ x"$os" != x"" ]
+then
+case $os in
+        # First match some system type aliases
+        # that might get confused with valid system types.
+	# -solaris* is a basic system type, with this one exception.
+	-solaris1 | -solaris1.*)
+		os=`echo $os | sed -e 's|solaris1|sunos4|'`
+		;;
+	-solaris)
+		os=-solaris2
+		;;
+	-svr4*)
+		os=-sysv4
+		;;
+	-unixware*)
+		os=-sysv4.2uw
+		;;
+	-gnu/linux*)
+		os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
+		;;
+	# First accept the basic system types.
+	# The portable systems comes first.
+	# Each alternative MUST END IN A *, to match a version number.
+	# -sysv* is not here because it comes later, after sysvr4.
+	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
+	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -sunos | -sunos[34]*\
+	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \
+	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
+	      | -aos* \
+	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
+	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
+	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* | -openbsd* \
+	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
+	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
+	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
+	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
+	      | -chorusos* | -chorusrdb* \
+	      | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+	      | -mingw32* | -linux-gnu* | -linux-uclibc* | -uxpv* | -beos* | -mpeix* | -udk* \
+	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
+	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
+	      | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
+	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
+	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
+	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly*)
+	# Remember, each alternative MUST END IN *, to match a version number.
+		;;
+	-qnx*)
+		case $basic_machine in
+		    x86-* | i*86-*)
+			;;
+		    *)
+			os=-nto$os
+			;;
+		esac
+		;;
+	-nto-qnx*)
+		;;
+	-nto*)
+		os=`echo $os | sed -e 's|nto|nto-qnx|'`
+		;;
+	-sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \
+	      | -windows* | -osx | -abug | -netware* | -os9* | -beos* \
+	      | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
+		;;
+	-mac*)
+		os=`echo $os | sed -e 's|mac|macos|'`
+		;;
+	-linux-dietlibc)
+		os=-linux-dietlibc
+		;;
+	-linux*)
+		os=`echo $os | sed -e 's|linux|linux-gnu|'`
+		;;
+	-sunos5*)
+		os=`echo $os | sed -e 's|sunos5|solaris2|'`
+		;;
+	-sunos6*)
+		os=`echo $os | sed -e 's|sunos6|solaris3|'`
+		;;
+	-opened*)
+		os=-openedition
+		;;
+        -os400*)
+		os=-os400
+		;;
+	-wince*)
+		os=-wince
+		;;
+	-osfrose*)
+		os=-osfrose
+		;;
+	-osf*)
+		os=-osf
+		;;
+	-utek*)
+		os=-bsd
+		;;
+	-dynix*)
+		os=-bsd
+		;;
+	-acis*)
+		os=-aos
+		;;
+	-atheos*)
+		os=-atheos
+		;;
+	-syllable*)
+		os=-syllable
+		;;
+	-386bsd)
+		os=-bsd
+		;;
+	-ctix* | -uts*)
+		os=-sysv
+		;;
+	-nova*)
+		os=-rtmk-nova
+		;;
+	-ns2 )
+		os=-nextstep2
+		;;
+	-nsk*)
+		os=-nsk
+		;;
+	# Preserve the version number of sinix5.
+	-sinix5.*)
+		os=`echo $os | sed -e 's|sinix|sysv|'`
+		;;
+	-sinix*)
+		os=-sysv4
+		;;
+        -tpf*)
+		os=-tpf
+		;;
+	-triton*)
+		os=-sysv3
+		;;
+	-oss*)
+		os=-sysv3
+		;;
+	-svr4)
+		os=-sysv4
+		;;
+	-svr3)
+		os=-sysv3
+		;;
+	-sysvr4)
+		os=-sysv4
+		;;
+	# This must come after -sysvr4.
+	-sysv*)
+		;;
+	-ose*)
+		os=-ose
+		;;
+	-es1800*)
+		os=-ose
+		;;
+	-xenix)
+		os=-xenix
+		;;
+	-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+		os=-mint
+		;;
+	-aros*)
+		os=-aros
+		;;
+	-kaos*)
+		os=-kaos
+		;;
+	-none)
+		;;
+	*)
+		# Get rid of the `-' at the beginning of $os.
+		os=`echo $os | sed 's/[^-]*-//'`
+		echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
+		exit 1
+		;;
+esac
+else
+
+# Here we handle the default operating systems that come with various machines.
+# The value should be what the vendor currently ships out the door with their
+# machine or put another way, the most popular os provided with the machine.
+
+# Note that if you're going to try to match "-MANUFACTURER" here (say,
+# "-sun"), then you have to tell the case statement up towards the top
+# that MANUFACTURER isn't an operating system.  Otherwise, code above
+# will signal an error saying that MANUFACTURER isn't an operating
+# system, and we'll never get to this point.
+
+case $basic_machine in
+	*-acorn)
+		os=-riscix1.2
+		;;
+	arm*-rebel)
+		os=-linux
+		;;
+	arm*-semi)
+		os=-aout
+		;;
+    c4x-* | tic4x-*)
+        os=-coff
+        ;;
+	# This must come before the *-dec entry.
+	pdp10-*)
+		os=-tops20
+		;;
+	pdp11-*)
+		os=-none
+		;;
+	*-dec | vax-*)
+		os=-ultrix4.2
+		;;
+	m68*-apollo)
+		os=-domain
+		;;
+	i386-sun)
+		os=-sunos4.0.2
+		;;
+	m68000-sun)
+		os=-sunos3
+		# This also exists in the configure program, but was not the
+		# default.
+		# os=-sunos4
+		;;
+	m68*-cisco)
+		os=-aout
+		;;
+	mips*-cisco)
+		os=-elf
+		;;
+	mips*-*)
+		os=-elf
+		;;
+	or32-*)
+		os=-coff
+		;;
+	*-tti)	# must be before sparc entry or we get the wrong os.
+		os=-sysv3
+		;;
+	sparc-* | *-sun)
+		os=-sunos4.1.1
+		;;
+	*-be)
+		os=-beos
+		;;
+	*-ibm)
+		os=-aix
+		;;
+    	*-knuth)
+		os=-mmixware
+		;;
+	*-wec)
+		os=-proelf
+		;;
+	*-winbond)
+		os=-proelf
+		;;
+	*-oki)
+		os=-proelf
+		;;
+	*-hp)
+		os=-hpux
+		;;
+	*-hitachi)
+		os=-hiux
+		;;
+	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
+		os=-sysv
+		;;
+	*-cbm)
+		os=-amigaos
+		;;
+	*-dg)
+		os=-dgux
+		;;
+	*-dolphin)
+		os=-sysv3
+		;;
+	m68k-ccur)
+		os=-rtu
+		;;
+	m88k-omron*)
+		os=-luna
+		;;
+	*-next )
+		os=-nextstep
+		;;
+	*-sequent)
+		os=-ptx
+		;;
+	*-crds)
+		os=-unos
+		;;
+	*-ns)
+		os=-genix
+		;;
+	i370-*)
+		os=-mvs
+		;;
+	*-next)
+		os=-nextstep3
+		;;
+	*-gould)
+		os=-sysv
+		;;
+	*-highlevel)
+		os=-bsd
+		;;
+	*-encore)
+		os=-bsd
+		;;
+	*-sgi)
+		os=-irix
+		;;
+	*-siemens)
+		os=-sysv4
+		;;
+	*-masscomp)
+		os=-rtu
+		;;
+	f30[01]-fujitsu | f700-fujitsu)
+		os=-uxpv
+		;;
+	*-rom68k)
+		os=-coff
+		;;
+	*-*bug)
+		os=-coff
+		;;
+	*-apple)
+		os=-macos
+		;;
+	*-atari*)
+		os=-mint
+		;;
+	*)
+		os=-none
+		;;
+esac
+fi
+
+# Here we handle the case where we know the os, and the CPU type, but not the
+# manufacturer.  We pick the logical manufacturer.
+vendor=unknown
+case $basic_machine in
+	*-unknown)
+		case $os in
+			-riscix*)
+				vendor=acorn
+				;;
+			-sunos*)
+				vendor=sun
+				;;
+			-aix*)
+				vendor=ibm
+				;;
+			-beos*)
+				vendor=be
+				;;
+			-hpux*)
+				vendor=hp
+				;;
+			-mpeix*)
+				vendor=hp
+				;;
+			-hiux*)
+				vendor=hitachi
+				;;
+			-unos*)
+				vendor=crds
+				;;
+			-dgux*)
+				vendor=dg
+				;;
+			-luna*)
+				vendor=omron
+				;;
+			-genix*)
+				vendor=ns
+				;;
+			-mvs* | -opened*)
+				vendor=ibm
+				;;
+			-os400*)
+				vendor=ibm
+				;;
+			-ptx*)
+				vendor=sequent
+				;;
+			-tpf*)
+				vendor=ibm
+				;;
+			-vxsim* | -vxworks* | -windiss*)
+				vendor=wrs
+				;;
+			-aux*)
+				vendor=apple
+				;;
+			-hms*)
+				vendor=hitachi
+				;;
+			-mpw* | -macos*)
+				vendor=apple
+				;;
+			-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+				vendor=atari
+				;;
+			-vos*)
+				vendor=stratus
+				;;
+		esac
+		basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"`
+		;;
+esac
+
+echo $basic_machine$os
+exit 0
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/src/sed/config/depcomp b/src/sed/config/depcomp
new file mode 100755
index 0000000..eed3cc9
--- /dev/null
+++ b/src/sed/config/depcomp
@@ -0,0 +1,522 @@
+#! /bin/sh
+# depcomp - compile a program generating dependencies as side-effects
+
+scriptversion=2004-05-31.23
+
+# Copyright (C) 1999, 2000, 2003, 2004 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
+
+case $1 in
+  '')
+     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: depcomp [--help] [--version] PROGRAM [ARGS]
+
+Run PROGRAMS ARGS to compile a file, generating dependencies
+as side-effects.
+
+Environment variables:
+  depmode     Dependency tracking mode.
+  source      Source file read by `PROGRAMS ARGS'.
+  object      Object file output by `PROGRAMS ARGS'.
+  DEPDIR      directory where to store dependencies.
+  depfile     Dependency file to output.
+  tmpdepfile  Temporary file to use when outputing dependencies.
+  libtool     Whether libtool is used (yes/no).
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit 0
+    ;;
+  -v | --v*)
+    echo "depcomp $scriptversion"
+    exit 0
+    ;;
+esac
+
+if test -z "$depmode" || test -z "$source" || test -z "$object"; then
+  echo "depcomp: Variables source, object and depmode must be set" 1>&2
+  exit 1
+fi
+
+# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
+depfile=${depfile-`echo "$object" |
+  sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
+tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
+
+rm -f "$tmpdepfile"
+
+# Some modes work just like other modes, but use different flags.  We
+# parameterize here, but still list the modes in the big case below,
+# to make depend.m4 easier to write.  Note that we *cannot* use a case
+# here, because this file can only contain one case statement.
+if test "$depmode" = hp; then
+  # HP compiler uses -M and no extra arg.
+  gccflag=-M
+  depmode=gcc
+fi
+
+if test "$depmode" = dashXmstdout; then
+   # This is just like dashmstdout with a different argument.
+   dashmflag=-xM
+   depmode=dashmstdout
+fi
+
+case "$depmode" in
+gcc3)
+## gcc 3 implements dependency tracking that does exactly what
+## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
+## it if -MD -MP comes after the -MF stuff.  Hmm.
+  "$@" -MT "$object" -MD -MP -MF "$tmpdepfile"
+  stat=$?
+  if test $stat -eq 0; then :
+  else
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  mv "$tmpdepfile" "$depfile"
+  ;;
+
+gcc)
+## There are various ways to get dependency output from gcc.  Here's
+## why we pick this rather obscure method:
+## - Don't want to use -MD because we'd like the dependencies to end
+##   up in a subdir.  Having to rename by hand is ugly.
+##   (We might end up doing this anyway to support other compilers.)
+## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
+##   -MM, not -M (despite what the docs say).
+## - Using -M directly means running the compiler twice (even worse
+##   than renaming).
+  if test -z "$gccflag"; then
+    gccflag=-MD,
+  fi
+  "$@" -Wp,"$gccflag$tmpdepfile"
+  stat=$?
+  if test $stat -eq 0; then :
+  else
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
+## The second -e expression handles DOS-style file names with drive letters.
+  sed -e 's/^[^:]*: / /' \
+      -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
+## This next piece of magic avoids the `deleted header file' problem.
+## The problem is that when a header file which appears in a .P file
+## is deleted, the dependency causes make to die (because there is
+## typically no way to rebuild the header).  We avoid this by adding
+## dummy dependencies for each header file.  Too bad gcc doesn't do
+## this for us directly.
+  tr ' ' '
+' < "$tmpdepfile" |
+## Some versions of gcc put a space before the `:'.  On the theory
+## that the space means something, we add a space to the output as
+## well.
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly.  Breaking it into two sed invocations is a workaround.
+    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+sgi)
+  if test "$libtool" = yes; then
+    "$@" "-Wp,-MDupdate,$tmpdepfile"
+  else
+    "$@" -MDupdate "$tmpdepfile"
+  fi
+  stat=$?
+  if test $stat -eq 0; then :
+  else
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+
+  if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
+    echo "$object : \\" > "$depfile"
+
+    # Clip off the initial element (the dependent).  Don't try to be
+    # clever and replace this with sed code, as IRIX sed won't handle
+    # lines with more than a fixed number of characters (4096 in
+    # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
+    # the IRIX cc adds comments like `#:fec' to the end of the
+    # dependency line.
+    tr ' ' '
+' < "$tmpdepfile" \
+    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
+    tr '
+' ' ' >> $depfile
+    echo >> $depfile
+
+    # The second pass generates a dummy entry for each header file.
+    tr ' ' '
+' < "$tmpdepfile" \
+   | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
+   >> $depfile
+  else
+    # The sourcefile does not contain any dependencies, so just
+    # store a dummy comment line, to avoid errors with the Makefile
+    # "include basename.Plo" scheme.
+    echo "#dummy" > "$depfile"
+  fi
+  rm -f "$tmpdepfile"
+  ;;
+
+aix)
+  # The C for AIX Compiler uses -M and outputs the dependencies
+  # in a .u file.  In older versions, this file always lives in the
+  # current directory.  Also, the AIX compiler puts `$object:' at the
+  # start of each line; $object doesn't have directory information.
+  # Version 6 uses the directory in both cases.
+  stripped=`echo "$object" | sed 's/\(.*\)\..*$/\1/'`
+  tmpdepfile="$stripped.u"
+  if test "$libtool" = yes; then
+    "$@" -Wc,-M
+  else
+    "$@" -M
+  fi
+  stat=$?
+
+  if test -f "$tmpdepfile"; then :
+  else
+    stripped=`echo "$stripped" | sed 's,^.*/,,'`
+    tmpdepfile="$stripped.u"
+  fi
+
+  if test $stat -eq 0; then :
+  else
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+
+  if test -f "$tmpdepfile"; then
+    outname="$stripped.o"
+    # Each line is of the form `foo.o: dependent.h'.
+    # Do two passes, one to just change these to
+    # `$object: dependent.h' and one to simply `dependent.h:'.
+    sed -e "s,^$outname:,$object :," < "$tmpdepfile" > "$depfile"
+    sed -e "s,^$outname: \(.*\)$,\1:," < "$tmpdepfile" >> "$depfile"
+  else
+    # The sourcefile does not contain any dependencies, so just
+    # store a dummy comment line, to avoid errors with the Makefile
+    # "include basename.Plo" scheme.
+    echo "#dummy" > "$depfile"
+  fi
+  rm -f "$tmpdepfile"
+  ;;
+
+icc)
+  # Intel's C compiler understands `-MD -MF file'.  However on
+  #    icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
+  # ICC 7.0 will fill foo.d with something like
+  #    foo.o: sub/foo.c
+  #    foo.o: sub/foo.h
+  # which is wrong.  We want:
+  #    sub/foo.o: sub/foo.c
+  #    sub/foo.o: sub/foo.h
+  #    sub/foo.c:
+  #    sub/foo.h:
+  # ICC 7.1 will output
+  #    foo.o: sub/foo.c sub/foo.h
+  # and will wrap long lines using \ :
+  #    foo.o: sub/foo.c ... \
+  #     sub/foo.h ... \
+  #     ...
+
+  "$@" -MD -MF "$tmpdepfile"
+  stat=$?
+  if test $stat -eq 0; then :
+  else
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each line is of the form `foo.o: dependent.h',
+  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
+  # Do two passes, one to just change these to
+  # `$object: dependent.h' and one to simply `dependent.h:'.
+  sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
+    sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+tru64)
+   # The Tru64 compiler uses -MD to generate dependencies as a side
+   # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
+   # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+   # dependencies in `foo.d' instead, so we check for that too.
+   # Subdirectories are respected.
+   dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+   test "x$dir" = "x$object" && dir=
+   base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+
+   if test "$libtool" = yes; then
+      # Dependencies are output in .lo.d with libtool 1.4.
+      # With libtool 1.5 they are output both in $dir.libs/$base.o.d
+      # and in $dir.libs/$base.o.d and $dir$base.o.d.  We process the
+      # latter, because the former will be cleaned when $dir.libs is
+      # erased.
+      tmpdepfile1="$dir.libs/$base.lo.d"
+      tmpdepfile2="$dir$base.o.d"
+      tmpdepfile3="$dir.libs/$base.d"
+      "$@" -Wc,-MD
+   else
+      tmpdepfile1="$dir$base.o.d"
+      tmpdepfile2="$dir$base.d"
+      tmpdepfile3="$dir$base.d"
+      "$@" -MD
+   fi
+
+   stat=$?
+   if test $stat -eq 0; then :
+   else
+      rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+      exit $stat
+   fi
+
+   if test -f "$tmpdepfile1"; then
+      tmpdepfile="$tmpdepfile1"
+   elif test -f "$tmpdepfile2"; then
+      tmpdepfile="$tmpdepfile2"
+   else
+      tmpdepfile="$tmpdepfile3"
+   fi
+   if test -f "$tmpdepfile"; then
+      sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
+      # That's a tab and a space in the [].
+      sed -e 's,^.*\.[a-z]*:[	 ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+   else
+      echo "#dummy" > "$depfile"
+   fi
+   rm -f "$tmpdepfile"
+   ;;
+
+#nosideeffect)
+  # This comment above is used by automake to tell side-effect
+  # dependency tracking mechanisms from slower ones.
+
+dashmstdout)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout, regardless of -o.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test $1 != '--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  # Remove `-o $object'.
+  IFS=" "
+  for arg
+  do
+    case $arg in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    *)
+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
+    esac
+  done
+
+  test -z "$dashmflag" && dashmflag=-M
+  # Require at least two characters before searching for `:'
+  # in the target name.  This is to cope with DOS-style filenames:
+  # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
+  "$@" $dashmflag |
+    sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
+  rm -f "$depfile"
+  cat < "$tmpdepfile" > "$depfile"
+  tr ' ' '
+' < "$tmpdepfile" | \
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly.  Breaking it into two sed invocations is a workaround.
+    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+dashXmstdout)
+  # This case only exists to satisfy depend.m4.  It is never actually
+  # run, as this mode is specially recognized in the preamble.
+  exit 1
+  ;;
+
+makedepend)
+  "$@" || exit $?
+  # Remove any Libtool call
+  if test "$libtool" = yes; then
+    while test $1 != '--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+  # X makedepend
+  shift
+  cleared=no
+  for arg in "$@"; do
+    case $cleared in
+    no)
+      set ""; shift
+      cleared=yes ;;
+    esac
+    case "$arg" in
+    -D*|-I*)
+      set fnord "$@" "$arg"; shift ;;
+    # Strip any option that makedepend may not understand.  Remove
+    # the object too, otherwise makedepend will parse it as a source file.
+    -*|$object)
+      ;;
+    *)
+      set fnord "$@" "$arg"; shift ;;
+    esac
+  done
+  obj_suffix="`echo $object | sed 's/^.*\././'`"
+  touch "$tmpdepfile"
+  ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
+  rm -f "$depfile"
+  cat < "$tmpdepfile" > "$depfile"
+  sed '1,2d' "$tmpdepfile" | tr ' ' '
+' | \
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly.  Breaking it into two sed invocations is a workaround.
+    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile" "$tmpdepfile".bak
+  ;;
+
+cpp)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test $1 != '--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  # Remove `-o $object'.
+  IFS=" "
+  for arg
+  do
+    case $arg in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    *)
+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
+    esac
+  done
+
+  "$@" -E |
+    sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
+    sed '$ s: \\$::' > "$tmpdepfile"
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  cat < "$tmpdepfile" >> "$depfile"
+  sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+msvisualcpp)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout, regardless of -o,
+  # because we must use -o when running libtool.
+  "$@" || exit $?
+  IFS=" "
+  for arg
+  do
+    case "$arg" in
+    "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
+	set fnord "$@"
+	shift
+	shift
+	;;
+    *)
+	set fnord "$@" "$arg"
+	shift
+	shift
+	;;
+    esac
+  done
+  "$@" -E |
+  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::	\1 \\:p' >> "$depfile"
+  echo "	" >> "$depfile"
+  . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+none)
+  exec "$@"
+  ;;
+
+*)
+  echo "Unknown depmode $depmode" 1>&2
+  exit 1
+  ;;
+esac
+
+exit 0
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
+# End:
diff --git a/src/sed/config/getline.m4 b/src/sed/config/getline.m4
new file mode 100644
index 0000000..ff8b5f4
--- /dev/null
+++ b/src/sed/config/getline.m4
@@ -0,0 +1,41 @@
+#serial 4
+
+dnl See if there's a working, system-supplied version of the getline function.
+dnl We can't just do AC_REPLACE_FUNCS(getline) because some systems
+dnl have a function by that name in -linet that doesn't have anything
+dnl to do with the function we need.
+AC_DEFUN([AM_FUNC_GETLINE],
+[dnl
+  am_getline_needs_run_time_check=no
+  AC_CHECK_FUNC(getline,
+		dnl Found it in some library.  Verify that it works.
+		am_getline_needs_run_time_check=yes,
+		am_cv_func_working_getline=no)
+  if test $am_getline_needs_run_time_check = yes; then
+    AC_CACHE_CHECK([for working getline function], am_cv_func_working_getline,
+    [echo fooN |tr -d '\012'|tr N '\012' > conftest.data
+    AC_TRY_RUN([
+#    include <stdio.h>
+#    include <sys/types.h>
+#    include <string.h>
+    int main ()
+    { /* Based on a test program from Karl Heuer.  */
+      char *line = NULL;
+      size_t siz = 0;
+      int len;
+      FILE *in = fopen ("./conftest.data", "r");
+      if (!in)
+	return 1;
+      len = getline (&line, &siz, in);
+      exit ((len == 4 && line && strcmp (line, "foo\n") == 0) ? 0 : 1);
+    }
+    ], am_cv_func_working_getline=yes dnl The library version works.
+    , am_cv_func_working_getline=no dnl The library version does NOT work.
+    , am_cv_func_working_getline=no dnl We're cross compiling.
+    )])
+  fi
+
+  if test $am_cv_func_working_getline = no; then
+    AC_LIBOBJ(getline)
+  fi
+])
diff --git a/src/sed/config/gettext-ver.m4 b/src/sed/config/gettext-ver.m4
new file mode 100644
index 0000000..7e553f3
--- /dev/null
+++ b/src/sed/config/gettext-ver.m4
@@ -0,0 +1 @@
+AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
diff --git a/src/sed/config/gettext.m4 b/src/sed/config/gettext.m4
new file mode 100644
index 0000000..30ea489
--- /dev/null
+++ b/src/sed/config/gettext.m4
@@ -0,0 +1,523 @@
+# gettext.m4 serial 12 (gettext-0.11)
+dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2002.
+
+dnl Macro to add for using GNU gettext.
+
+dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
+dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
+dnl    default (if it is not specified or empty) is 'no-libtool'.
+dnl    INTLSYMBOL should be 'external' for packages with no intl directory,
+dnl    and 'no-libtool' or 'use-libtool' for packages with an intl directory.
+dnl    If INTLSYMBOL is 'use-libtool', then a libtool library
+dnl    $(top_builddir)/intl/libintl.la will be created (shared and/or static,
+dnl    depending on --{enable,disable}-{shared,static} and on the presence of
+dnl    AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
+dnl    $(top_builddir)/intl/libintl.a will be created.
+dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
+dnl    implementations (in libc or libintl) without the ngettext() function
+dnl    will be ignored.
+dnl INTLDIR is used to find the intl libraries.  If empty,
+dnl    the value `$(top_builddir)/intl/' is used.
+dnl
+dnl The result of the configuration is one of three cases:
+dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
+dnl    and used.
+dnl    Catalog format: GNU --> install in $(datadir)
+dnl    Catalog extension: .mo after installation, .gmo in source tree
+dnl 2) GNU gettext has been found in the system's C library.
+dnl    Catalog format: GNU --> install in $(datadir)
+dnl    Catalog extension: .mo after installation, .gmo in source tree
+dnl 3) No internationalization, always use English msgid.
+dnl    Catalog format: none
+dnl    Catalog extension: none
+dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
+dnl The use of .gmo is historical (it was needed to avoid overwriting the
+dnl GNU format catalogs when building on a platform with an X/Open gettext),
+dnl but we keep it in order not to force irrelevant filename changes on the
+dnl maintainers.
+dnl
+AC_DEFUN([AM_GNU_GETTEXT],
+[
+  dnl Argument checking.
+  ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [no-libtool], , [ifelse([$1], [use-libtool], ,
+    [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
+])])])])])
+  ifelse([$2], [], , [ifelse([$2], [need-ngettext], ,
+    [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
+])])])
+  define(gt_included_intl, ifelse([$1], [external], [no], [yes]))
+  define(gt_libtool_suffix_prefix, ifelse([$1], [use-libtool], [l], []))
+
+  AC_REQUIRE([AM_PO_SUBDIRS])dnl
+  ifelse(gt_included_intl, yes, [
+    AC_REQUIRE([AM_INTL_SUBDIR])dnl
+  ])
+
+  dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+
+  AC_MSG_CHECKING([whether NLS is requested])
+  dnl Default is enabled NLS
+  AC_ARG_ENABLE(nls,
+    [  --disable-nls           do not use Native Language Support],
+    USE_NLS=$enableval, USE_NLS=yes)
+  AC_MSG_RESULT($USE_NLS)
+  AC_SUBST(USE_NLS)
+
+  ifelse(gt_included_intl, yes, [
+    BUILD_INCLUDED_LIBINTL=no
+    USE_INCLUDED_LIBINTL=no
+  ])
+  LIBINTL=
+  LTLIBINTL=
+  POSUB=
+
+  dnl If we use NLS figure out what method
+  if test "$USE_NLS" = "yes"; then
+    gt_use_preinstalled_gnugettext=no
+    ifelse(gt_included_intl, yes, [
+      AC_MSG_CHECKING([whether included gettext is requested])
+      AC_ARG_WITH(included-gettext,
+        [  --with-included-gettext use the GNU gettext library included here],
+        nls_cv_force_use_gnu_gettext=$withval,
+        nls_cv_force_use_gnu_gettext=no)
+      AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
+
+      nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
+      if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
+    ])
+        dnl User does not insist on using GNU NLS library.  Figure out what
+        dnl to use.  If GNU gettext is available we use this.  Else we have
+        dnl to fall back to GNU NLS library.
+
+        dnl Add a version number to the cache macros.
+        define([gt_api_version], ifelse([$2], [need-ngettext], 2, 1))
+        define([gt_cv_func_gnugettext_libc], [gt_cv_func_gnugettext]gt_api_version[_libc])
+        define([gt_cv_func_gnugettext_libintl], [gt_cv_func_gnugettext]gt_api_version[_libintl])
+
+        AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc,
+         [AC_TRY_LINK([#include <libintl.h>
+extern int _nl_msg_cat_cntr;],
+            [bindtextdomain ("", "");
+return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr],
+            gt_cv_func_gnugettext_libc=yes,
+            gt_cv_func_gnugettext_libc=no)])
+
+        if test "$gt_cv_func_gnugettext_libc" != "yes"; then
+          dnl Sometimes libintl requires libiconv, so first search for libiconv.
+          ifelse(gt_included_intl, yes, , [
+            AM_ICONV_LINK
+          ])
+          dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
+          dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
+          dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
+          dnl even if libiconv doesn't exist.
+          AC_LIB_LINKFLAGS_BODY([intl])
+          AC_CACHE_CHECK([for GNU gettext in libintl],
+            gt_cv_func_gnugettext_libintl,
+           [gt_save_CPPFLAGS="$CPPFLAGS"
+            CPPFLAGS="$CPPFLAGS $INCINTL"
+            gt_save_LIBS="$LIBS"
+            LIBS="$LIBS $LIBINTL"
+            dnl Now see whether libintl exists and does not depend on libiconv.
+            AC_TRY_LINK([#include <libintl.h>
+extern int _nl_msg_cat_cntr;],
+              [bindtextdomain ("", "");
+return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr],
+              gt_cv_func_gnugettext_libintl=yes,
+              gt_cv_func_gnugettext_libintl=no)
+            dnl Now see whether libintl exists and depends on libiconv.
+            if test "$gt_cv_func_gnugettext_libintl" != yes && test -n "$LIBICONV"; then
+              LIBS="$LIBS $LIBICONV"
+              AC_TRY_LINK([#include <libintl.h>
+extern int _nl_msg_cat_cntr;],
+                [bindtextdomain ("", "");
+return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr],
+               [LIBINTL="$LIBINTL $LIBICONV"
+                LTLIBINTL="$LTLIBINTL $LTLIBICONV"
+                gt_cv_func_gnugettext_libintl=yes
+               ])
+            fi
+            CPPFLAGS="$gt_save_CPPFLAGS"
+            LIBS="$gt_save_LIBS"])
+        fi
+
+        dnl If an already present or preinstalled GNU gettext() is found,
+        dnl use it.  But if this macro is used in GNU gettext, and GNU
+        dnl gettext is already preinstalled in libintl, we update this
+        dnl libintl.  (Cf. the install rule in intl/Makefile.in.)
+        if test "$gt_cv_func_gnugettext_libc" = "yes" \
+           || { test "$gt_cv_func_gnugettext_libintl" = "yes" \
+                && test "$PACKAGE" != gettext; }; then
+          gt_use_preinstalled_gnugettext=yes
+        fi
+
+    ifelse(gt_included_intl, yes, [
+        if test "$gt_use_preinstalled_gnugettext" != "yes"; then
+          dnl GNU gettext is not found in the C library.
+          dnl Fall back on included GNU gettext library.
+          nls_cv_use_gnu_gettext=yes
+        fi
+      fi
+
+      if test "$nls_cv_use_gnu_gettext" = "yes"; then
+        dnl Mark actions used to generate GNU NLS library.
+        INTLOBJS="\$(GETTOBJS)"
+        BUILD_INCLUDED_LIBINTL=yes
+        USE_INCLUDED_LIBINTL=yes
+        LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV"
+        LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV"
+        LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
+      fi
+
+      if test "$gt_use_preinstalled_gnugettext" = "yes" \
+         || test "$nls_cv_use_gnu_gettext" = "yes"; then
+        dnl Mark actions to use GNU gettext tools.
+        CATOBJEXT=.gmo
+      fi
+    ])
+
+    if test "$gt_use_preinstalled_gnugettext" = "yes" \
+       || test "$nls_cv_use_gnu_gettext" = "yes"; then
+      AC_DEFINE(ENABLE_NLS, 1,
+        [Define to 1 if translation of program messages to the user's native language
+   is requested.])
+    else
+      USE_NLS=no
+    fi
+  fi
+
+  if test "$USE_NLS" = "yes"; then
+
+    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
+      if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
+        AC_MSG_CHECKING([how to link with libintl])
+        AC_MSG_RESULT([$LIBINTL])
+        AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
+      fi
+
+      dnl For backward compatibility. Some packages may be using this.
+      AC_DEFINE(HAVE_GETTEXT, 1,
+       [Define if the GNU gettext() function is already present or preinstalled.])
+      AC_DEFINE(HAVE_DCGETTEXT, 1,
+       [Define if the GNU dcgettext() function is already present or preinstalled.])
+    fi
+
+    dnl We need to process the po/ directory.
+    POSUB=po
+  fi
+
+  ifelse(gt_included_intl, yes, [
+    dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
+    dnl to 'yes' because some of the testsuite requires it.
+    if test "$PACKAGE" = gettext; then
+      BUILD_INCLUDED_LIBINTL=yes
+    fi
+
+    dnl Make all variables we use known to autoconf.
+    AC_SUBST(BUILD_INCLUDED_LIBINTL)
+    AC_SUBST(USE_INCLUDED_LIBINTL)
+    AC_SUBST(CATOBJEXT)
+    AC_SUBST(INTLOBJS)
+
+    dnl For backward compatibility. Some configure.ins may be using this.
+    nls_cv_header_intl=
+    nls_cv_header_libgt=
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    DATADIRNAME=share
+    AC_SUBST(DATADIRNAME)
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    INSTOBJEXT=.mo
+    AC_SUBST(INSTOBJEXT)
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    GENCAT=gencat
+    AC_SUBST(GENCAT)
+
+    dnl Enable libtool support if the surrounding package wishes it.
+    INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
+    AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
+  ])
+
+  dnl For backward compatibility. Some Makefiles may be using this.
+  INTLLIBS="$LIBINTL"
+  AC_SUBST(INTLLIBS)
+
+  dnl Make all documented variables known to autoconf.
+  AC_SUBST(LIBINTL)
+  AC_SUBST(LTLIBINTL)
+  AC_SUBST(POSUB)
+])
+
+
+dnl Checks for all prerequisites of the po subdirectory,
+dnl except for USE_NLS.
+AC_DEFUN([AM_PO_SUBDIRS],
+[
+  AC_REQUIRE([AC_PROG_MAKE_SET])dnl
+  AC_REQUIRE([AC_PROG_INSTALL])dnl
+  AC_REQUIRE([AM_MKINSTALLDIRS])dnl
+
+  dnl Perform the following tests also if --disable-nls has been given,
+  dnl because they are needed for "make dist" to work.
+
+  dnl Search for GNU msgfmt in the PATH.
+  dnl The first test excludes Solaris msgfmt and early GNU msgfmt versions.
+  dnl The second test excludes FreeBSD msgfmt.
+  AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
+    [$ac_dir/$ac_word --statistics /dev/null >/dev/null 2>&1 &&
+     (if $ac_dir/$ac_word --statistics /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi)],
+    :)
+  AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
+
+  dnl Search for GNU xgettext 0.11 or newer in the PATH.
+  dnl The first test excludes Solaris xgettext and early GNU xgettext versions.
+  dnl The second test excludes FreeBSD xgettext.
+  AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
+    [$ac_dir/$ac_word --omit-header --copyright-holder= /dev/null >/dev/null 2>&1 &&
+     (if $ac_dir/$ac_word --omit-header --copyright-holder= /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi)],
+    :)
+  dnl Remove leftover from FreeBSD xgettext call.
+  rm -f messages.po
+
+  dnl Search for GNU msgmerge 0.11 or newer in the PATH.
+  AM_PATH_PROG_WITH_TEST(MSGMERGE, msgmerge,
+    [$ac_dir/$ac_word --update -q /dev/null /dev/null >/dev/null 2>&1], :)
+
+  dnl This could go away some day; the PATH_PROG_WITH_TEST already does it.
+  dnl Test whether we really found GNU msgfmt.
+  if test "$GMSGFMT" != ":"; then
+    dnl If it is no GNU msgfmt we define it as : so that the
+    dnl Makefiles still can work.
+    if $GMSGFMT --statistics /dev/null >/dev/null 2>&1 &&
+       (if $GMSGFMT --statistics /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi); then
+      : ;
+    else
+      GMSGFMT=`echo "$GMSGFMT" | sed -e 's,^.*/,,'`
+      AC_MSG_RESULT(
+        [found $GMSGFMT program is not GNU msgfmt; ignore it])
+      GMSGFMT=":"
+    fi
+  fi
+
+  dnl This could go away some day; the PATH_PROG_WITH_TEST already does it.
+  dnl Test whether we really found GNU xgettext.
+  if test "$XGETTEXT" != ":"; then
+    dnl If it is no GNU xgettext we define it as : so that the
+    dnl Makefiles still can work.
+    if $XGETTEXT --omit-header --copyright-holder= /dev/null >/dev/null 2>&1 &&
+       (if $XGETTEXT --omit-header --copyright-holder= /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi); then
+      : ;
+    else
+      AC_MSG_RESULT(
+        [found xgettext program is not GNU xgettext; ignore it])
+      XGETTEXT=":"
+    fi
+    dnl Remove leftover from FreeBSD xgettext call.
+    rm -f messages.po
+  fi
+
+  AC_OUTPUT_COMMANDS([
+    for ac_file in $CONFIG_FILES; do
+      # Support "outfile[:infile[:infile...]]"
+      case "$ac_file" in
+        *:*) ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+      esac
+      # PO directories have a Makefile.in generated from Makefile.in.in.
+      case "$ac_file" in */Makefile.in)
+        # Adjust a relative srcdir.
+        ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'`
+        ac_dir_suffix="/`echo "$ac_dir"|sed 's%^\./%%'`"
+        ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'`
+        # In autoconf-2.13 it is called $ac_given_srcdir.
+        # In autoconf-2.50 it is called $srcdir.
+        test -n "$ac_given_srcdir" || ac_given_srcdir="$srcdir"
+        case "$ac_given_srcdir" in
+          .)  top_srcdir=`echo $ac_dots|sed 's%/$%%'` ;;
+          /*) top_srcdir="$ac_given_srcdir" ;;
+          *)  top_srcdir="$ac_dots$ac_given_srcdir" ;;
+        esac
+        if test -f "$ac_given_srcdir/$ac_dir/POTFILES.in"; then
+          rm -f "$ac_dir/POTFILES"
+          test -n "$as_me" && echo "$as_me: creating $ac_dir/POTFILES" || echo "creating $ac_dir/POTFILES"
+          cat "$ac_given_srcdir/$ac_dir/POTFILES.in" | sed -e "/^#/d" -e "/^[ 	]*\$/d" -e "s,.*,     $top_srcdir/& \\\\," | sed -e "\$s/\(.*\) \\\\/\1/" > "$ac_dir/POTFILES"
+          # ALL_LINGUAS, POFILES, GMOFILES, UPDATEPOFILES, DUMMYPOFILES depend
+          # on $ac_dir but don't depend on user-specified configuration
+          # parameters.
+          if test -f "$ac_given_srcdir/$ac_dir/LINGUAS"; then
+            # The LINGUAS file contains the set of available languages.
+            if test -n "$ALL_LINGUAS"; then
+              test -n "$as_me" && echo "$as_me: setting ALL_LINGUAS in configure.in is obsolete" || echo "setting ALL_LINGUAS in configure.in is obsolete"
+            fi
+            ALL_LINGUAS_=`sed -e "/^#/d" "$ac_given_srcdir/$ac_dir/LINGUAS"`
+            # Hide the ALL_LINGUAS assigment from automake.
+            eval 'ALL_LINGUAS''=$ALL_LINGUAS_'
+          fi
+          case "$ac_given_srcdir" in
+            .) srcdirpre= ;;
+            *) srcdirpre='$(srcdir)/' ;;
+          esac
+          POFILES=
+          GMOFILES=
+          UPDATEPOFILES=
+          DUMMYPOFILES=
+          for lang in $ALL_LINGUAS; do
+            POFILES="$POFILES $srcdirpre$lang.po"
+            GMOFILES="$GMOFILES $srcdirpre$lang.gmo"
+            UPDATEPOFILES="$UPDATEPOFILES $lang.po-update"
+            DUMMYPOFILES="$DUMMYPOFILES $lang.nop"
+          done
+          # CATALOGS depends on both $ac_dir and the user's LINGUAS
+          # environment variable.
+          INST_LINGUAS=
+          if test -n "$ALL_LINGUAS"; then
+            for presentlang in $ALL_LINGUAS; do
+              useit=no
+              if test "%UNSET%" != "$LINGUAS"; then
+                desiredlanguages="$LINGUAS"
+              else
+                desiredlanguages="$ALL_LINGUAS"
+              fi
+              for desiredlang in $desiredlanguages; do
+                # Use the presentlang catalog if desiredlang is
+                #   a. equal to presentlang, or
+                #   b. a variant of presentlang (because in this case,
+                #      presentlang can be used as a fallback for messages
+                #      which are not translated in the desiredlang catalog).
+                case "$desiredlang" in
+                  "$presentlang"*) useit=yes;;
+                esac
+              done
+              if test $useit = yes; then
+                INST_LINGUAS="$INST_LINGUAS $presentlang"
+              fi
+            done
+          fi
+          CATALOGS=
+          if test -n "$INST_LINGUAS"; then
+            for lang in $INST_LINGUAS; do
+              CATALOGS="$CATALOGS $lang.gmo"
+            done
+          fi
+          test -n "$as_me" && echo "$as_me: creating $ac_dir/Makefile" || echo "creating $ac_dir/Makefile"
+          sed -e "/^POTFILES =/r $ac_dir/POTFILES" -e "/^# Makevars/r $ac_given_srcdir/$ac_dir/Makevars" -e "s|@POFILES@|$POFILES|g" -e "s|@GMOFILES@|$GMOFILES|g" -e "s|@UPDATEPOFILES@|$UPDATEPOFILES|g" -e "s|@DUMMYPOFILES@|$DUMMYPOFILES|g" -e "s|@CATALOGS@|$CATALOGS|g" "$ac_dir/Makefile.in" > "$ac_dir/Makefile"
+          for f in "$ac_given_srcdir/$ac_dir"/Rules-*; do
+            if test -f "$f"; then
+              case "$f" in
+                *.orig | *.bak | *~) ;;
+                *) cat "$f" >> "$ac_dir/Makefile" ;;
+              esac
+            fi
+          done
+        fi
+        ;;
+      esac
+    done],
+   [# Capture the value of obsolete $ALL_LINGUAS because we need it to compute
+    # POFILES, GMOFILES, UPDATEPOFILES, DUMMYPOFILES, CATALOGS. But hide it
+    # from automake.
+    eval 'ALL_LINGUAS''="$ALL_LINGUAS"'
+    # Capture the value of LINGUAS because we need it to compute CATALOGS.
+    LINGUAS="${LINGUAS-%UNSET%}"
+   ])
+])
+
+
+dnl Checks for all prerequisites of the intl subdirectory,
+dnl except for INTL_LIBTOOL_SUFFIX_PREFIX (and possibly LIBTOOL), INTLOBJS,
+dnl            USE_INCLUDED_LIBINTL, BUILD_INCLUDED_LIBINTL.
+AC_DEFUN([AM_INTL_SUBDIR],
+[
+  AC_REQUIRE([AC_PROG_INSTALL])dnl
+  AC_REQUIRE([AM_MKINSTALLDIRS])dnl
+  AC_REQUIRE([AC_PROG_CC])dnl
+  AC_REQUIRE([AC_CANONICAL_HOST])dnl
+  AC_REQUIRE([AC_PROG_RANLIB])dnl
+  AC_REQUIRE([AC_ISC_POSIX])dnl
+  AC_REQUIRE([AC_HEADER_STDC])dnl
+  AC_REQUIRE([AC_C_CONST])dnl
+  AC_REQUIRE([AC_C_INLINE])dnl
+  AC_REQUIRE([AC_TYPE_OFF_T])dnl
+  AC_REQUIRE([AC_TYPE_SIZE_T])dnl
+  AC_REQUIRE([AC_FUNC_ALLOCA])dnl
+  AC_REQUIRE([AC_FUNC_MMAP])dnl
+  AC_REQUIRE([jm_GLIBC21])dnl
+
+  AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h stddef.h \
+stdlib.h string.h unistd.h sys/param.h])
+  AC_CHECK_FUNCS([feof_unlocked fgets_unlocked getc_unlocked getcwd getegid \
+geteuid getgid getuid mempcpy munmap putenv setenv setlocale stpcpy \
+strcasecmp strdup strtoul tsearch __argz_count __argz_stringify __argz_next])
+
+  AM_ICONV
+  AM_LANGINFO_CODESET
+  AM_LC_MESSAGES
+
+  dnl intl/plural.c is generated from intl/plural.y. It requires bison,
+  dnl because plural.y uses bison specific features. It requires at least
+  dnl bison-1.26 because earlier versions generate a plural.c that doesn't
+  dnl compile.
+  dnl bison is only needed for the maintainer (who touches plural.y). But in
+  dnl order to avoid separate Makefiles or --enable-maintainer-mode, we put
+  dnl the rule in general Makefile. Now, some people carelessly touch the
+  dnl files or have a broken "make" program, hence the plural.c rule will
+  dnl sometimes fire. To avoid an error, defines BISON to ":" if it is not
+  dnl present or too old.
+  AC_CHECK_PROGS([INTLBISON], [bison])
+  if test -z "$INTLBISON"; then
+    ac_verc_fail=yes
+  else
+    dnl Found it, now check the version.
+    AC_MSG_CHECKING([version of bison])
+changequote(<<,>>)dnl
+    ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
+    case $ac_prog_version in
+      '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+      1.2[6-9]* | 1.[3-9][0-9]* | [2-9].*)
+changequote([,])dnl
+         ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+      *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+    esac
+    AC_MSG_RESULT([$ac_prog_version])
+  fi
+  if test $ac_verc_fail = yes; then
+    INTLBISON=:
+  fi
+])
+
+
+AC_DEFUN([AM_MKINSTALLDIRS],
+[
+  dnl If the AC_CONFIG_AUX_DIR macro for autoconf is used we possibly
+  dnl find the mkinstalldirs script in another subdir but $(top_srcdir).
+  dnl Try to locate is.
+  MKINSTALLDIRS=
+  if test -n "$ac_aux_dir"; then
+    MKINSTALLDIRS="$ac_aux_dir/mkinstalldirs"
+  fi
+  if test -z "$MKINSTALLDIRS"; then
+    MKINSTALLDIRS="\$(top_srcdir)/mkinstalldirs"
+  fi
+  AC_SUBST(MKINSTALLDIRS)
+])
diff --git a/src/sed/config/glibc21.m4 b/src/sed/config/glibc21.m4
new file mode 100644
index 0000000..9c9f3db
--- /dev/null
+++ b/src/sed/config/glibc21.m4
@@ -0,0 +1,32 @@
+# glibc21.m4 serial 2 (fileutils-4.1.3, gettext-0.10.40)
+dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+# Test for the GNU C Library, version 2.1 or newer.
+# From Bruno Haible.
+
+AC_DEFUN([jm_GLIBC21],
+  [
+    AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
+      ac_cv_gnu_library_2_1,
+      [AC_EGREP_CPP([Lucky GNU user],
+	[
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
+  Lucky GNU user
+ #endif
+#endif
+	],
+	ac_cv_gnu_library_2_1=yes,
+	ac_cv_gnu_library_2_1=no)
+      ]
+    )
+    AC_SUBST(GLIBC21)
+    GLIBC21="$ac_cv_gnu_library_2_1"
+  ]
+)
diff --git a/src/sed/config/help2man b/src/sed/config/help2man
new file mode 100755
index 0000000..af57f41
--- /dev/null
+++ b/src/sed/config/help2man
@@ -0,0 +1,559 @@
+#!/usr/bin/env perl
+
+# Generate a short man page from --help and --version output.
+# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Free Software
+# Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+# Written by Brendan O'Dea <bod@debian.org>
+# Available from ftp://ftp.gnu.org/gnu/help2man/
+
+use 5.005;
+use strict;
+use Getopt::Long;
+use Text::Tabs qw(expand);
+use POSIX qw(strftime setlocale LC_TIME);
+
+my $this_program = 'help2man';
+my $this_version = '1.28';
+my $version_info = <<EOT;
+GNU $this_program $this_version
+
+Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+Written by Brendan O'Dea <bod\@debian.org>
+EOT
+
+my $help_info = <<EOT;
+`$this_program' generates a man page out of `--help' and `--version' output.
+
+Usage: $this_program [OPTION]... EXECUTABLE
+
+ -n, --name=STRING       description for the NAME paragraph
+ -s, --section=SECTION   section number for manual page (1, 6, 8)
+ -m, --manual=TEXT       name of manual (User Commands, ...)
+ -S, --source=TEXT       source of program (FSF, Debian, ...)
+ -i, --include=FILE      include material from `FILE'
+ -I, --opt-include=FILE  include material from `FILE' if it exists
+ -o, --output=FILE       send output to `FILE'
+ -p, --info-page=TEXT    name of Texinfo manual
+ -N, --no-info           suppress pointer to Texinfo manual
+     --help              print this help, then exit
+     --version           print version number, then exit
+
+EXECUTABLE should accept `--help' and `--version' options although
+alternatives may be specified using:
+
+ -h, --help-option=STRING     help option string
+ -v, --version-option=STRING  version option string
+
+Report bugs to <bug-help2man\@gnu.org>.
+EOT
+
+my $section = 1;
+my $manual = '';
+my $source = '';
+my $help_option = '--help';
+my $version_option = '--version';
+my ($opt_name, @opt_include, $opt_output, $opt_info, $opt_no_info);
+
+my %opt_def = (
+    'n|name=s'		 => \$opt_name,
+    's|section=s'	 => \$section,
+    'm|manual=s'	 => \$manual,
+    'S|source=s'	 => \$source,
+    'i|include=s'	 => sub { push @opt_include, [ pop, 1 ] },
+    'I|opt-include=s'	 => sub { push @opt_include, [ pop, 0 ] },
+    'o|output=s'	 => \$opt_output,
+    'p|info-page=s'	 => \$opt_info,
+    'N|no-info'		 => \$opt_no_info,
+    'h|help-option=s'	 => \$help_option,
+    'v|version-option=s' => \$version_option,
+);
+
+# Parse options.
+Getopt::Long::config('bundling');
+GetOptions (%opt_def,
+    help    => sub { print $help_info; exit },
+    version => sub { print $version_info; exit },
+) or die $help_info;
+
+die $help_info unless @ARGV == 1;
+
+my %include = ();
+my %append = ();
+my @include = (); # retain order given in include file
+
+# Process include file (if given).  Format is:
+#
+#   [section name]
+#   verbatim text
+#
+# or
+#
+#   /pattern/
+#   verbatim text
+#
+
+while (@opt_include)
+{
+    my ($inc, $required) = @{shift @opt_include};
+
+    next unless -f $inc or $required;
+    die "$this_program: can't open `$inc' ($!)\n"
+	unless open INC, $inc;
+
+    my $key;
+    my $hash = \%include;
+
+    while (<INC>)
+    {
+	# [section]
+	if (/^\[([^]]+)\]/)
+	{
+	    $key = uc $1;
+	    $key =~ s/^\s+//;
+	    $key =~ s/\s+$//;
+	    $hash = \%include;
+	    push @include, $key unless $include{$key};
+	    next;
+	}
+
+	# /pattern/
+	if (m!^/(.*)/([ims]*)!)
+	{
+	    my $pat = $2 ? "(?$2)$1" : $1;
+
+	    # Check pattern.
+	    eval { $key = qr($pat) };
+	    if ($@)
+	    {
+		$@ =~ s/ at .*? line \d.*//;
+		die "$inc:$.:$@";
+	    }
+
+	    $hash = \%append;
+	    next;
+	}
+
+	# Check for options before the first section--anything else is
+	# silently ignored, allowing the first for comments and
+	# revision info.
+	unless ($key)
+	{
+	    # handle options
+	    if (/^-/)
+	    {
+		local @ARGV = split;
+		GetOptions %opt_def;
+	    }
+
+	    next;
+	}
+
+	$hash->{$key} ||= '';
+	$hash->{$key} .= $_;
+    }
+
+    close INC;
+
+    die "$this_program: no valid information found in `$inc'\n"
+	unless $key;
+}
+
+# Compress trailing blank lines.
+for my $hash (\(%include, %append))
+{
+    for (keys %$hash) { $hash->{$_} =~ s/\n+$/\n/ }
+}
+
+# Turn off localisation of executable's ouput.
+@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
+
+# Turn off localisation of date (for strftime).
+setlocale LC_TIME, 'C';
+
+# Grab help and version info from executable.
+my ($help_text, $version_text) = map {
+    join '', map { s/ +$//; expand $_ } `$ARGV[0] $_ 2>/dev/null`
+	or die "$this_program: can't get `$_' info from $ARGV[0]\n"
+} $help_option, $version_option;
+
+my $date = strftime "%B %Y", localtime;
+(my $program = $ARGV[0]) =~ s!.*/!!;
+my $package = $program;
+my $version;
+
+if ($opt_output)
+{
+    unlink $opt_output
+	or die "$this_program: can't unlink $opt_output ($!)\n"
+	if -e $opt_output;
+
+    open STDOUT, ">$opt_output"
+	or die "$this_program: can't create $opt_output ($!)\n";
+}
+
+# The first line of the --version information is assumed to be in one
+# of the following formats:
+#
+#   <version>
+#   <program> <version>
+#   {GNU,Free} <program> <version>
+#   <program> ({GNU,Free} <package>) <version>
+#   <program> - {GNU,Free} <package> <version>
+#
+# and seperated from any copyright/author details by a blank line.
+
+($_, $version_text) = split /\n+/, $version_text, 2;
+
+if (/^(\S+) +\(((?:GNU|Free) +[^)]+)\) +(.*)/ or
+    /^(\S+) +- *((?:GNU|Free) +\S+) +(.*)/)
+{
+    $program = $1;
+    $package = $2;
+    $version = $3;
+}
+elsif (/^((?:GNU|Free) +)?(\S+) +(.*)/)
+{
+    $program = $2;
+    $package = $1 ? "$1$2" : $2;
+    $version = $3;
+}
+else
+{
+    $version = $_;
+}
+
+$program =~ s!.*/!!;
+
+# No info for `info' itself.
+$opt_no_info = 1 if $program eq 'info';
+
+# --name overrides --include contents.
+$include{NAME} = "$program \\- $opt_name\n" if $opt_name;
+
+# Default (useless) NAME paragraph.
+$include{NAME} ||= "$program \\- manual page for $program $version\n";
+
+# Man pages traditionally have the page title in caps.
+my $PROGRAM = uc $program;
+
+# Set default page head/footers
+$source ||= "$program $version";
+unless ($manual)
+{
+    for ($section)
+    {
+	if (/^(1[Mm]|8)/) { $manual = 'System Administration Utilities' }
+	elsif (/^6/)	  { $manual = 'Games' }
+	else		  { $manual = 'User Commands' }
+    }
+}
+
+# Extract usage clause(s) [if any] for SYNOPSIS.
+if ($help_text =~ s/^Usage:( +(\S+))(.*)((?:\n(?: {6}\1| *or: +\S).*)*)//m)
+{
+    my @syn = $2 . $3;
+
+    if ($_ = $4)
+    {
+	s/^\n//;
+	for (split /\n/) { s/^ *(or: +)?//; push @syn, $_ }
+    }
+
+    my $synopsis = '';
+    for (@syn)
+    {
+	$synopsis .= ".br\n" if $synopsis;
+	s!^\S*/!!;
+	s/^(\S+) *//;
+	$synopsis .= ".B $1\n";
+	s/\s+$//;
+	s/(([][]|\.\.+)+)/\\fR$1\\fI/g;
+	s/^/\\fI/ unless s/^\\fR//;
+	$_ .= '\fR';
+	s/(\\fI)( *)/$2$1/g;
+	s/\\fI\\fR//g;
+	s/^\\fR//;
+	s/\\fI$//;
+	s/^\./\\&./;
+
+	$synopsis .= "$_\n";
+    }
+
+    $include{SYNOPSIS} ||= $synopsis;
+}
+
+# Process text, initial section is DESCRIPTION.
+my $sect = 'DESCRIPTION';
+$_ = "$help_text\n\n$version_text";
+
+# Normalise paragraph breaks.
+s/^\n+//;
+s/\n*$/\n/;
+s/\n\n+/\n\n/g;
+
+# Temporarily exchange leading dots, apostrophes and backslashes for
+# tokens.
+s/^\./\x80/mg;
+s/^'/\x81/mg;
+s/\\/\x82/g;
+
+# Start a new paragraph (if required) for these.
+s/([^\n])\n(Report +bugs|Email +bug +reports +to|Written +by)/$1\n\n$2/g;
+
+sub convert_option;
+
+while (length)
+{
+    # Convert some standard paragraph names.
+    if (s/^(Options|Examples): *\n//)
+    {
+	$sect = uc $1;
+	next;
+    }
+
+    # Copyright section
+    if (/^Copyright +[(\xa9]/)
+    {
+	$sect = 'COPYRIGHT';
+	$include{$sect} ||= '';
+	$include{$sect} .= ".PP\n" if $include{$sect};
+
+	my $copy;
+	($copy, $_) = split /\n\n/, $_, 2;
+
+	for ($copy)
+	{
+	    # Add back newline
+	    s/\n*$/\n/;
+
+	    # Convert iso9959-1 copyright symbol or (c) to nroff
+	    # character.
+	    s/^Copyright +(?:\xa9|\([Cc]\))/Copyright \\(co/mg;
+
+	    # Insert line breaks before additional copyright messages
+	    # and the disclaimer.
+	    s/(.)\n(Copyright |This +is +free +software)/$1\n.br\n$2/g;
+
+	    # Join hyphenated lines.
+	    s/([A-Za-z])-\n */$1/g;
+	}
+
+	$include{$sect} .= $copy;
+	$_ ||= '';
+	next;
+    }
+
+    # Catch bug report text.
+    if (/^(Report +bugs|Email +bug +reports +to) /)
+    {
+	$sect = 'REPORTING BUGS';
+    }
+
+    # Author section.
+    elsif (/^Written +by/)
+    {
+	$sect = 'AUTHOR';
+    }
+
+    # Examples, indicated by an indented leading $, % or > are
+    # rendered in a constant width font.
+    if (/^( +)([\$\%>] )\S/)
+    {
+	my $indent = $1;
+	my $prefix = $2;
+	my $break = '.IP';
+	$include{$sect} ||= '';
+	while (s/^$indent\Q$prefix\E(\S.*)\n*//)
+	{
+	    $include{$sect} .= "$break\n\\f(CW$prefix$1\\fR\n";
+	    $break = '.br';
+	}
+
+	next;
+    }
+
+    my $matched = '';
+    $include{$sect} ||= '';
+
+    # Sub-sections have a trailing colon and the second line indented.
+    if (s/^(\S.*:) *\n / /)
+    {
+	$matched .= $& if %append;
+	$include{$sect} .= qq(.SS "$1"\n);
+    }
+
+    my $indent = 0;
+    my $content = '';
+
+    # Option with description.
+    if (s/^( {1,10}([+-]\S.*?))(?:(  +(?!-))|\n( {20,}))(\S.*)\n//)
+    {
+	$matched .= $& if %append;
+	$indent = length ($4 || "$1$3");
+	$content = ".TP\n\x83$2\n\x83$5\n";
+	unless ($4)
+	{
+	    # Indent may be different on second line.
+	    $indent = length $& if /^ {20,}/;
+	}
+    }
+
+    # Option without description.
+    elsif (s/^ {1,10}([+-]\S.*)\n//)
+    {
+	$matched .= $& if %append;
+	$content = ".HP\n\x83$1\n";
+	$indent = 80; # not continued
+    }
+
+    # Indented paragraph with tag.
+    elsif (s/^( +(\S.*?)  +)(\S.*)\n//)
+    {
+	$matched .= $& if %append;
+	$indent = length $1;
+	$content = ".TP\n\x83$2\n\x83$3\n";
+    }
+
+    # Indented paragraph.
+    elsif (s/^( +)(\S.*)\n//)
+    {
+	$matched .= $& if %append;
+	$indent = length $1;
+	$content = ".IP\n\x83$2\n";
+    }
+
+    # Left justified paragraph.
+    else
+    {
+	s/(.*)\n//;
+	$matched .= $& if %append;
+	$content = ".PP\n" if $include{$sect};
+	$content .= "$1\n";
+    }
+
+    # Append continuations.
+    while (s/^ {$indent}(\S.*)\n//)
+    {
+	$matched .= $& if %append;
+	$content .= "\x83$1\n"
+    }
+
+    # Move to next paragraph.
+    s/^\n+//;
+
+    for ($content)
+    {
+	# Leading dot and apostrophe protection.
+	s/\x83\./\x80/g;
+	s/\x83'/\x81/g;
+	s/\x83//g;
+
+	# Convert options.
+	s/(^| )(-[][\w=-]+)/$1 . convert_option $2/mge;
+    }
+
+    # Check if matched paragraph contains /pat/.
+    if (%append)
+    {
+	for my $pat (keys %append)
+	{
+	    if ($matched =~ $pat)
+	    {
+		$content .= ".PP\n" unless $append{$pat} =~ /^\./;
+		$content .= $append{$pat};
+	    }
+	}
+    }
+
+    $include{$sect} .= $content;
+}
+
+# Refer to the real documentation.
+unless ($opt_no_info)
+{
+    my $info_page = $opt_info || $program;
+
+    $sect = 'SEE ALSO';
+    $include{$sect} ||= '';
+    $include{$sect} .= ".PP\n" if $include{$sect};
+    $include{$sect} .= <<EOT;
+The full documentation for
+.B $program
+is maintained as a Texinfo manual.  If the
+.B info
+and
+.B $program
+programs are properly installed at your site, the command
+.IP
+.B info $info_page
+.PP
+should give you access to the complete manual.
+EOT
+}
+
+# Output header.
+print <<EOT;
+.\\" DO NOT MODIFY THIS FILE!  It was generated by $this_program $this_version.
+.TH $PROGRAM "$section" "$date" "$source" "$manual"
+EOT
+
+# Section ordering.
+my @pre = qw(NAME SYNOPSIS DESCRIPTION OPTIONS EXAMPLES);
+my @post = ('AUTHOR', 'REPORTING BUGS', 'COPYRIGHT', 'SEE ALSO');
+my $filter = join '|', @pre, @post;
+
+# Output content.
+for (@pre, (grep ! /^($filter)$/o, @include), @post)
+{
+    if ($include{$_})
+    {
+	my $quote = /\W/ ? '"' : '';
+	print ".SH $quote$_$quote\n";
+	
+	for ($include{$_})
+	{
+	    # Replace leading dot, apostrophe and backslash tokens.
+	    s/\x80/\\&./g;
+	    s/\x81/\\&'/g;
+	    s/\x82/\\e/g;
+	    print;
+	}
+    }
+}
+
+exit;
+
+# Convert option dashes to \- to stop nroff from hyphenating 'em, and
+# embolden.  Option arguments get italicised.
+sub convert_option
+{
+    local $_ = '\fB' . shift;
+
+    s/-/\\-/g;
+    unless (s/\[=(.*)\]$/\\fR[=\\fI$1\\fR]/)
+    {
+	s/=(.)/\\fR=\\fI$1/;
+	s/ (.)/ \\fI$1/;
+	$_ .= '\fR';
+    }
+
+    $_;
+}
diff --git a/src/sed/config/iconv.m4 b/src/sed/config/iconv.m4
new file mode 100644
index 0000000..f81e8b9
--- /dev/null
+++ b/src/sed/config/iconv.m4
@@ -0,0 +1,96 @@
+# iconv.m4 serial AM3 (gettext-0.11)
+dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([AM_ICONV_LINK],
+[
+  dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
+  dnl those with the standalone portable GNU libiconv installed).
+
+  dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+
+  dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
+  dnl accordingly.
+  AC_LIB_LINKFLAGS_BODY([iconv])
+
+  dnl Add $INCICONV to CPPFLAGS before performing the following checks,
+  dnl because if the user has installed libiconv and not disabled its use
+  dnl via --without-libiconv-prefix, he wants to use it. The first
+  dnl AC_TRY_LINK will then fail, the second AC_TRY_LINK will succeed.
+  am_save_CPPFLAGS="$CPPFLAGS"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV])
+
+  AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
+    am_cv_func_iconv="no, consider installing GNU libiconv"
+    am_cv_lib_iconv=no
+    AC_TRY_LINK([#include <stdlib.h>
+#include <iconv.h>],
+      [iconv_t cd = iconv_open("","");
+       iconv(cd,NULL,NULL,NULL,NULL);
+       iconv_close(cd);],
+      am_cv_func_iconv=yes)
+    if test "$am_cv_func_iconv" != yes; then
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS $LIBICONV"
+      AC_TRY_LINK([#include <stdlib.h>
+#include <iconv.h>],
+        [iconv_t cd = iconv_open("","");
+         iconv(cd,NULL,NULL,NULL,NULL);
+         iconv_close(cd);],
+        am_cv_lib_iconv=yes
+        am_cv_func_iconv=yes)
+      LIBS="$am_save_LIBS"
+    fi
+  ])
+  if test "$am_cv_func_iconv" = yes; then
+    AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
+  fi
+  if test "$am_cv_lib_iconv" = yes; then
+    AC_MSG_CHECKING([how to link with libiconv])
+    AC_MSG_RESULT([$LIBICONV])
+  else
+    dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
+    dnl either.
+    CPPFLAGS="$am_save_CPPFLAGS"
+    LIBICONV=
+    LTLIBICONV=
+  fi
+  AC_SUBST(LIBICONV)
+  AC_SUBST(LTLIBICONV)
+])
+
+AC_DEFUN([AM_ICONV],
+[
+  AC_REQUIRE([AM_ICONV_LINK])
+  if test "$am_cv_func_iconv" = yes; then
+    AC_MSG_CHECKING([for iconv declaration])
+    AC_CACHE_VAL(am_cv_proto_iconv, [
+      AC_TRY_COMPILE([
+#include <stdlib.h>
+#include <iconv.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+#if defined(__STDC__) || defined(__cplusplus)
+size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
+#else
+size_t iconv();
+#endif
+], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
+      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
+    am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
+    AC_MSG_RESULT([$]{ac_t:-
+         }[$]am_cv_proto_iconv)
+    AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
+      [Define as const if the declaration of iconv() needs const.])
+  fi
+])
diff --git a/src/sed/config/install-sh b/src/sed/config/install-sh
new file mode 100755
index 0000000..b777f12
--- /dev/null
+++ b/src/sed/config/install-sh
@@ -0,0 +1,322 @@
+#!/bin/sh
+# install - install a program, script, or datafile
+
+scriptversion=2004-07-05.00
+
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
+#
+# Copyright (C) 1994 X Consortium
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# `make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.  It can only install one file at a time, a restriction
+# shared with many OS's install programs.
+
+# set DOITPROG to echo to test this script
+
+# Don't use :- since 4.3BSD and earlier shells don't like it.
+doit="${DOITPROG-}"
+
+# put in absolute paths if you don't have them in your path; or use env. vars.
+
+mvprog="${MVPROG-mv}"
+cpprog="${CPPROG-cp}"
+chmodprog="${CHMODPROG-chmod}"
+chownprog="${CHOWNPROG-chown}"
+chgrpprog="${CHGRPPROG-chgrp}"
+stripprog="${STRIPPROG-strip}"
+rmprog="${RMPROG-rm}"
+mkdirprog="${MKDIRPROG-mkdir}"
+
+chmodcmd="$chmodprog 0755"
+chowncmd=
+chgrpcmd=
+stripcmd=
+rmcmd="$rmprog -f"
+mvcmd="$mvprog"
+src=
+dst=
+dir_arg=
+dstarg=
+no_target_directory=
+
+usage="Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
+   or: $0 [OPTION]... SRCFILES... DIRECTORY
+   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
+   or: $0 [OPTION]... -d DIRECTORIES...
+
+In the 1st form, copy SRCFILE to DSTFILE.
+In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
+In the 4th, create DIRECTORIES.
+
+Options:
+-c         (ignored)
+-d         create directories instead of installing files.
+-g GROUP   $chgrpprog installed files to GROUP.
+-m MODE    $chmodprog installed files to MODE.
+-o USER    $chownprog installed files to USER.
+-s         $stripprog installed files.
+-t DIRECTORY  install into DIRECTORY.
+-T         report an error if DSTFILE is a directory.
+--help     display this help and exit.
+--version  display version info and exit.
+
+Environment variables override the default commands:
+  CHGRPPROG CHMODPROG CHOWNPROG CPPROG MKDIRPROG MVPROG RMPROG STRIPPROG
+"
+
+while test -n "$1"; do
+  case $1 in
+    -c) shift
+        continue;;
+
+    -d) dir_arg=true
+        shift
+        continue;;
+
+    -g) chgrpcmd="$chgrpprog $2"
+        shift
+        shift
+        continue;;
+
+    --help) echo "$usage"; exit 0;;
+
+    -m) chmodcmd="$chmodprog $2"
+        shift
+        shift
+        continue;;
+
+    -o) chowncmd="$chownprog $2"
+        shift
+        shift
+        continue;;
+
+    -s) stripcmd=$stripprog
+        shift
+        continue;;
+
+    -t) dstarg=$2
+	shift
+	shift
+	continue;;
+
+    -T) no_target_directory=true
+	shift
+	continue;;
+
+    --version) echo "$0 $scriptversion"; exit 0;;
+
+    *)  # When -d is used, all remaining arguments are directories to create.
+	# When -t is used, the destination is already specified.
+	test -n "$dir_arg$dstarg" && break
+        # Otherwise, the last argument is the destination.  Remove it from $@.
+	for arg
+	do
+          if test -n "$dstarg"; then
+	    # $@ is not empty: it contains at least $arg.
+	    set fnord "$@" "$dstarg"
+	    shift # fnord
+	  fi
+	  shift # arg
+	  dstarg=$arg
+	done
+	break;;
+  esac
+done
+
+if test -z "$1"; then
+  if test -z "$dir_arg"; then
+    echo "$0: no input file specified." >&2
+    exit 1
+  fi
+  # It's OK to call `install-sh -d' without argument.
+  # This can happen when creating conditional directories.
+  exit 0
+fi
+
+for src
+do
+  # Protect names starting with `-'.
+  case $src in
+    -*) src=./$src ;;
+  esac
+
+  if test -n "$dir_arg"; then
+    dst=$src
+    src=
+
+    if test -d "$dst"; then
+      mkdircmd=:
+      chmodcmd=
+    else
+      mkdircmd=$mkdirprog
+    fi
+  else
+    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
+    # might cause directories to be created, which would be especially bad
+    # if $src (and thus $dsttmp) contains '*'.
+    if test ! -f "$src" && test ! -d "$src"; then
+      echo "$0: $src does not exist." >&2
+      exit 1
+    fi
+
+    if test -z "$dstarg"; then
+      echo "$0: no destination specified." >&2
+      exit 1
+    fi
+
+    dst=$dstarg
+    # Protect names starting with `-'.
+    case $dst in
+      -*) dst=./$dst ;;
+    esac
+
+    # If destination is a directory, append the input filename; won't work
+    # if double slashes aren't ignored.
+    if test -d "$dst"; then
+      if test -n "$no_target_directory"; then
+	echo "$0: $dstarg: Is a directory" >&2
+	exit 1
+      fi
+      dst=$dst/`basename "$src"`
+    fi
+  fi
+
+  # This sed command emulates the dirname command.
+  dstdir=`echo "$dst" | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
+
+  # Make sure that the destination directory exists.
+
+  # Skip lots of stat calls in the usual case.
+  if test ! -d "$dstdir"; then
+    defaultIFS='
+	 '
+    IFS="${IFS-$defaultIFS}"
+
+    oIFS=$IFS
+    # Some sh's can't handle IFS=/ for some reason.
+    IFS='%'
+    set - `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'`
+    IFS=$oIFS
+
+    pathcomp=
+
+    while test $# -ne 0 ; do
+      pathcomp=$pathcomp$1
+      shift
+      if test ! -d "$pathcomp"; then
+        $mkdirprog "$pathcomp"
+	# mkdir can fail with a `File exist' error in case several
+	# install-sh are creating the directory concurrently.  This
+	# is OK.
+	test -d "$pathcomp" || exit
+      fi
+      pathcomp=$pathcomp/
+    done
+  fi
+
+  if test -n "$dir_arg"; then
+    $doit $mkdircmd "$dst" \
+      && { test -z "$chowncmd" || $doit $chowncmd "$dst"; } \
+      && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } \
+      && { test -z "$stripcmd" || $doit $stripcmd "$dst"; } \
+      && { test -z "$chmodcmd" || $doit $chmodcmd "$dst"; }
+
+  else
+    dstfile=`basename "$dst"`
+
+    # Make a couple of temp file names in the proper directory.
+    dsttmp=$dstdir/_inst.$$_
+    rmtmp=$dstdir/_rm.$$_
+
+    # Trap to clean up those temp files at exit.
+    trap 'status=$?; rm -f "$dsttmp" "$rmtmp" && exit $status' 0
+    trap '(exit $?); exit' 1 2 13 15
+
+    # Copy the file name to the temp name.
+    $doit $cpprog "$src" "$dsttmp" &&
+
+    # and set any options; do chmod last to preserve setuid bits.
+    #
+    # If any of these fail, we abort the whole thing.  If we want to
+    # ignore errors from any of these, just make sure not to ignore
+    # errors from the above "$doit $cpprog $src $dsttmp" command.
+    #
+    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } \
+      && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } \
+      && { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } \
+      && { test -z "$chmodcmd" || $doit $chmodcmd "$dsttmp"; } &&
+
+    # Now rename the file to the real destination.
+    { $doit $mvcmd -f "$dsttmp" "$dstdir/$dstfile" 2>/dev/null \
+      || {
+	   # The rename failed, perhaps because mv can't rename something else
+	   # to itself, or perhaps because mv is so ancient that it does not
+	   # support -f.
+
+	   # Now remove or move aside any old file at destination location.
+	   # We try this two ways since rm can't unlink itself on some
+	   # systems and the destination file might be busy for other
+	   # reasons.  In this case, the final cleanup might fail but the new
+	   # file should still install successfully.
+	   {
+	     if test -f "$dstdir/$dstfile"; then
+	       $doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null \
+	       || $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null \
+	       || {
+		 echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2
+		 (exit 1); exit
+	       }
+	     else
+	       :
+	     fi
+	   } &&
+
+	   # Now rename the file to the real destination.
+	   $doit $mvcmd "$dsttmp" "$dstdir/$dstfile"
+	 }
+    }
+  fi || { (exit 1); exit; }
+done
+
+# The final little trick to "correctly" pass the exit status to the exit trap.
+{
+  (exit 0); exit
+}
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
+# End:
diff --git a/src/sed/config/lcmessage.m4 b/src/sed/config/lcmessage.m4
new file mode 100644
index 0000000..ffbf915
--- /dev/null
+++ b/src/sed/config/lcmessage.m4
@@ -0,0 +1,32 @@
+# lcmessage.m4 serial 2 (gettext-0.10.40)
+dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1995.
+
+# Check whether LC_MESSAGES is available in <locale.h>.
+
+AC_DEFUN([AM_LC_MESSAGES],
+  [if test $ac_cv_header_locale_h = yes; then
+    AC_CACHE_CHECK([for LC_MESSAGES], am_cv_val_LC_MESSAGES,
+      [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
+       am_cv_val_LC_MESSAGES=yes, am_cv_val_LC_MESSAGES=no)])
+    if test $am_cv_val_LC_MESSAGES = yes; then
+      AC_DEFINE(HAVE_LC_MESSAGES, 1,
+        [Define if your <locale.h> file defines LC_MESSAGES.])
+    fi
+  fi])
diff --git a/src/sed/config/lib-ld.m4 b/src/sed/config/lib-ld.m4
new file mode 100644
index 0000000..ddb5732
--- /dev/null
+++ b/src/sed/config/lib-ld.m4
@@ -0,0 +1,97 @@
+# lib-ld.m4 serial 1 (gettext-0.11)
+dnl Copyright (C) 1996-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl Subroutines of libtool.m4,
+dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision
+dnl with libtool.m4.
+
+dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no.
+AC_DEFUN([AC_LIB_PROG_LD_GNU],
+[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld,
+[# I'd rather use --version here, but apparently some GNU ld's only accept -v.
+if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
+  acl_cv_prog_gnu_ld=yes
+else
+  acl_cv_prog_gnu_ld=no
+fi])
+with_gnu_ld=$acl_cv_prog_gnu_ld
+])
+
+dnl From libtool-1.4. Sets the variable LD.
+AC_DEFUN([AC_LIB_PROG_LD],
+[AC_ARG_WITH(gnu-ld,
+[  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]],
+test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  AC_MSG_CHECKING([for ld used by GCC])
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [[\\/]* | [A-Za-z]:[\\/]*)]
+      [re_direlt='/[^/][^/]*/\.\./']
+      # Canonicalize the path of ld
+      ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
+      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
+	ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  AC_MSG_CHECKING([for GNU ld])
+else
+  AC_MSG_CHECKING([for non-GNU ld])
+fi
+AC_CACHE_VAL(acl_cv_path_LD,
+[if test -z "$LD"; then
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
+  for ac_dir in $PATH; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      acl_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some GNU ld's only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      if "$acl_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then
+	test "$with_gnu_ld" != no && break
+      else
+	test "$with_gnu_ld" != yes && break
+      fi
+    fi
+  done
+  IFS="$ac_save_ifs"
+else
+  acl_cv_path_LD="$LD" # Let the user override the test with a path.
+fi])
+LD="$acl_cv_path_LD"
+if test -n "$LD"; then
+  AC_MSG_RESULT($LD)
+else
+  AC_MSG_RESULT(no)
+fi
+test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
+AC_LIB_PROG_LD_GNU
+])
diff --git a/src/sed/config/lib-link.m4 b/src/sed/config/lib-link.m4
new file mode 100644
index 0000000..a16aa44
--- /dev/null
+++ b/src/sed/config/lib-link.m4
@@ -0,0 +1,521 @@
+# lib-link.m4 serial 1 (gettext-0.11)
+dnl Copyright (C) 2001-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and
+dnl the libraries corresponding to explicit and implicit dependencies.
+dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and
+dnl augments the CPPFLAGS variable.
+AC_DEFUN([AC_LIB_LINKFLAGS],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+  define([Name],[translit([$1],[./-], [___])])
+  define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-],
+                               [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])])
+  AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [
+    AC_LIB_LINKFLAGS_BODY([$1], [$2])
+    ac_cv_lib[]Name[]_libs="$LIB[]NAME"
+    ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME"
+    ac_cv_lib[]Name[]_cppflags="$INC[]NAME"
+  ])
+  LIB[]NAME="$ac_cv_lib[]Name[]_libs"
+  LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs"
+  INC[]NAME="$ac_cv_lib[]Name[]_cppflags"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+  AC_SUBST([LIB]NAME)
+  AC_SUBST([LTLIB]NAME)
+  dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the
+  dnl results of this search when this library appears as a dependency.
+  HAVE_LIB[]NAME=yes
+  undefine([Name])
+  undefine([NAME])
+])
+
+dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode)
+dnl searches for libname and the libraries corresponding to explicit and
+dnl implicit dependencies, together with the specified include files and
+dnl the ability to compile and link the specified testcode. If found, it
+dnl sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME} and
+dnl LTLIB${NAME} variables and augments the CPPFLAGS variable, and
+dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
+dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
+AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+  define([Name],[translit([$1],[./-], [___])])
+  define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-],
+                               [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])])
+
+  dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME
+  dnl accordingly.
+  AC_LIB_LINKFLAGS_BODY([$1], [$2])
+
+  dnl Add $INC[]NAME to CPPFLAGS before performing the following checks,
+  dnl because if the user has installed lib[]Name and not disabled its use
+  dnl via --without-lib[]Name-prefix, he wants to use it.
+  ac_save_CPPFLAGS="$CPPFLAGS"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+
+  AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
+    ac_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIB[]NAME"
+    AC_TRY_LINK([$3], [$4], [ac_cv_lib[]Name=yes], [ac_cv_lib[]Name=no])
+    LIBS="$ac_save_LIBS"
+  ])
+  if test "$ac_cv_lib[]Name" = yes; then
+    HAVE_LIB[]NAME=yes
+    AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the $1 library.])
+    AC_MSG_CHECKING([how to link with lib[]$1])
+    AC_MSG_RESULT([$LIB[]NAME])
+  else
+    HAVE_LIB[]NAME=no
+    dnl If $LIB[]NAME didn't lead to a usable library, we don't need
+    dnl $INC[]NAME either.
+    CPPFLAGS="$ac_save_CPPFLAGS"
+    LIB[]NAME=
+    LTLIB[]NAME=
+  fi
+  AC_SUBST([HAVE_LIB]NAME)
+  AC_SUBST([LIB]NAME)
+  AC_SUBST([LTLIB]NAME)
+  undefine([Name])
+  undefine([NAME])
+])
+
+dnl Determine the platform dependent parameters needed to use rpath:
+dnl libext, shlibext, hardcode_libdir_flag_spec, hardcode_libdir_separator,
+dnl hardcode_direct, hardcode_minus_L,
+dnl sys_lib_search_path_spec, sys_lib_dlsearch_path_spec.
+AC_DEFUN([AC_LIB_RPATH],
+[
+  AC_REQUIRE([AC_PROG_CC])                dnl we use $CC, $GCC, $LDFLAGS
+  AC_REQUIRE([AC_LIB_PROG_LD])            dnl we use $LD, $with_gnu_ld
+  AC_REQUIRE([AC_CANONICAL_HOST])         dnl we use $host
+  AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
+  AC_CACHE_CHECK([for shared library run path origin], acl_cv_rpath, [
+    CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
+    ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
+    . ./conftest.sh
+    rm -f ./conftest.sh
+    acl_cv_rpath=done
+  ])
+  wl="$acl_cv_wl"
+  libext="$acl_cv_libext"
+  shlibext="$acl_cv_shlibext"
+  hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
+  hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
+  hardcode_direct="$acl_cv_hardcode_direct"
+  hardcode_minus_L="$acl_cv_hardcode_minus_L"
+  sys_lib_search_path_spec="$acl_cv_sys_lib_search_path_spec"
+  sys_lib_dlsearch_path_spec="$acl_cv_sys_lib_dlsearch_path_spec"
+])
+
+dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and
+dnl the libraries corresponding to explicit and implicit dependencies.
+dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
+AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
+[
+  define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-],
+                               [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])])
+  dnl By default, look in $includedir and $libdir.
+  use_additional=yes
+  AC_LIB_WITH_FINAL_PREFIX([
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+  ])
+  AC_ARG_WITH([lib$1-prefix],
+[  --with-lib$1-prefix[=DIR]  search for lib$1 in DIR/include and DIR/lib
+  --without-lib$1-prefix     don't search for lib$1 in includedir and libdir],
+[
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+        AC_LIB_WITH_FINAL_PREFIX([
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+        ])
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/lib"
+      fi
+    fi
+])
+  dnl Search the library and its dependencies in $additional_libdir and
+  dnl $LDFLAGS. Using breadth-first-seach.
+  LIB[]NAME=
+  LTLIB[]NAME=
+  INC[]NAME=
+  rpathdirs=
+  ltrpathdirs=
+  names_already_handled=
+  names_next_round='$1 $2'
+  while test -n "$names_next_round"; do
+    names_this_round="$names_next_round"
+    names_next_round=
+    for name in $names_this_round; do
+      already_handled=
+      for n in $names_already_handled; do
+        if test "$n" = "$name"; then
+          already_handled=yes
+          break
+        fi
+      done
+      if test -z "$already_handled"; then
+        names_already_handled="$names_already_handled $name"
+        dnl See if it was already located by an earlier AC_LIB_LINKFLAGS
+        dnl or AC_LIB_HAVE_LINKFLAGS call.
+        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'`
+        eval value=\"\$HAVE_LIB$uppername\"
+        if test -n "$value"; then
+          if test "$value" = yes; then
+            eval value=\"\$LIB$uppername\"
+            test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value"
+            eval value=\"\$LTLIB$uppername\"
+            test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value"
+          else
+            dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined
+            dnl that this library doesn't exist. So just drop it.
+            :
+          fi
+        else
+          dnl Search the library lib$name in $additional_libdir and $LDFLAGS
+          dnl and the already constructed $LIBNAME/$LTLIBNAME.
+          found_dir=
+          found_la=
+          found_so=
+          found_a=
+          if test $use_additional = yes; then
+            if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext"; then
+              found_dir="$additional_libdir"
+              found_so="$additional_libdir/lib$name.$shlibext"
+              if test -f "$additional_libdir/lib$name.la"; then
+                found_la="$additional_libdir/lib$name.la"
+              fi
+            else
+              if test -f "$additional_libdir/lib$name.$libext"; then
+                found_dir="$additional_libdir"
+                found_a="$additional_libdir/lib$name.$libext"
+                if test -f "$additional_libdir/lib$name.la"; then
+                  found_la="$additional_libdir/lib$name.la"
+                fi
+              fi
+            fi
+          fi
+          if test "X$found_dir" = "X"; then
+            for x in $LDFLAGS $LTLIB[]NAME; do
+              AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+              case "$x" in
+                -L*)
+                  dir=`echo "X$x" | sed -e 's/^X-L//'`
+                  if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext"; then
+                    found_dir="$dir"
+                    found_so="$dir/lib$name.$shlibext"
+                    if test -f "$dir/lib$name.la"; then
+                      found_la="$dir/lib$name.la"
+                    fi
+                  else
+                    if test -f "$dir/lib$name.$libext"; then
+                      found_dir="$dir"
+                      found_a="$dir/lib$name.$libext"
+                      if test -f "$dir/lib$name.la"; then
+                        found_la="$dir/lib$name.la"
+                      fi
+                    fi
+                  fi
+                  ;;
+              esac
+              if test "X$found_dir" != "X"; then
+                break
+              fi
+            done
+          fi
+          if test "X$found_dir" != "X"; then
+            dnl Found the library.
+            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name"
+            if test "X$found_so" != "X"; then
+              dnl Linking with a shared library. We attempt to hardcode its
+              dnl directory into the executable's runpath, unless it's the
+              dnl standard /usr/lib.
+              if test "X$found_dir" = "X/usr/lib"; then
+                dnl No hardcoding is needed.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+              else
+                dnl Use an explicit option to hardcode DIR into the resulting
+                dnl binary.
+                dnl Potentially add DIR to ltrpathdirs.
+                dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
+                haveit=
+                for x in $ltrpathdirs; do
+                  if test "X$x" = "X$found_dir"; then
+                    haveit=yes
+                    break
+                  fi
+                done
+                if test -z "$haveit"; then
+                  ltrpathdirs="$ltrpathdirs $found_dir"
+                fi
+                dnl The hardcoding into $LIBNAME is system dependent.
+                if test "$hardcode_direct" = yes; then
+                  dnl Using DIR/libNAME.so during linking hardcodes DIR into the
+                  dnl resulting binary.
+                  LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                else
+                  if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
+                    dnl Use an explicit option to hardcode DIR into the resulting
+                    dnl binary.
+                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                    dnl Potentially add DIR to rpathdirs.
+                    dnl The rpathdirs will be appended to $LIBNAME at the end.
+                    haveit=
+                    for x in $rpathdirs; do
+                      if test "X$x" = "X$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      rpathdirs="$rpathdirs $found_dir"
+                    fi
+                  else
+                    dnl Rely on "-L$found_dir".
+                    dnl But don't add it if it's already contained in the LDFLAGS
+                    dnl or the already constructed $LIBNAME
+                    haveit=
+                    for x in $LDFLAGS $LIB[]NAME; do
+                      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                      if test "X$x" = "X-L$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir"
+                    fi
+                    if test "$hardcode_minus_L" != no; then
+                      dnl FIXME: Not sure whether we should use
+                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
+                      dnl here.
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                    else
+                      dnl We cannot use $hardcode_runpath_var and LD_RUN_PATH
+                      dnl here, because this doesn't fit in flags passed to the
+                      dnl compiler. So give up. No hardcoding. This affects only
+                      dnl very old systems.
+                      dnl FIXME: Not sure whether we should use
+                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
+                      dnl here.
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
+                    fi
+                  fi
+                fi
+              fi
+            else
+              if test "X$found_a" != "X"; then
+                dnl Linking with a static library.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a"
+              else
+                dnl We shouldn't come here, but anyway it's good to have a
+                dnl fallback.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name"
+              fi
+            fi
+            dnl Assume the include files are nearby.
+            additional_includedir=
+            case "$found_dir" in
+              */lib | */lib/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'`
+                additional_includedir="$basedir/include"
+                ;;
+            esac
+            if test "X$additional_includedir" != "X"; then
+              dnl Potentially add $additional_includedir to $INCNAME.
+              dnl But don't add it
+              dnl   1. if it's the standard /usr/include,
+              dnl   2. if it's /usr/local/include and we are using GCC on Linux,
+              dnl   3. if it's already present in $CPPFLAGS or the already
+              dnl      constructed $INCNAME,
+              dnl   4. if it doesn't exist as a directory.
+              if test "X$additional_includedir" != "X/usr/include"; then
+                haveit=
+                if test "X$additional_includedir" = "X/usr/local/include"; then
+                  if test -n "$GCC"; then
+                    case $host_os in
+                      linux*) haveit=yes;;
+                    esac
+                  fi
+                fi
+                if test -z "$haveit"; then
+                  for x in $CPPFLAGS $INC[]NAME; do
+                    AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                    if test "X$x" = "X-I$additional_includedir"; then
+                      haveit=yes
+                      break
+                    fi
+                  done
+                  if test -z "$haveit"; then
+                    if test -d "$additional_includedir"; then
+                      dnl Really add $additional_includedir to $INCNAME.
+                      INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir"
+                    fi
+                  fi
+                fi
+              fi
+            fi
+            dnl Look for dependencies.
+            if test -n "$found_la"; then
+              dnl Read the .la file. It defines the variables
+              dnl dlname, library_names, old_library, dependency_libs, current,
+              dnl age, revision, installed, dlopen, dlpreopen, libdir.
+              save_libdir="$libdir"
+              case "$found_la" in
+                */* | *\\*) . "$found_la" ;;
+                *) . "./$found_la" ;;
+              esac
+              libdir="$save_libdir"
+              dnl We use only dependency_libs.
+              for dep in $dependency_libs; do
+                case "$dep" in
+                  -L*)
+                    additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+                    dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME.
+                    dnl But don't add it
+                    dnl   1. if it's the standard /usr/lib,
+                    dnl   2. if it's /usr/local/lib and we are using GCC on Linux,
+                    dnl   3. if it's already present in $LDFLAGS or the already
+                    dnl      constructed $LIBNAME,
+                    dnl   4. if it doesn't exist as a directory.
+                    if test "X$additional_libdir" != "X/usr/lib"; then
+                      haveit=
+                      if test "X$additional_libdir" = "X/usr/local/lib"; then
+                        if test -n "$GCC"; then
+                          case $host_os in
+                            linux*) haveit=yes;;
+                          esac
+                        fi
+                      fi
+                      if test -z "$haveit"; then
+                        haveit=
+                        for x in $LDFLAGS $LIB[]NAME; do
+                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                            dnl Really add $additional_libdir to $LIBNAME.
+                            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir"
+                          fi
+                        fi
+                        haveit=
+                        for x in $LDFLAGS $LTLIB[]NAME; do
+                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                            dnl Really add $additional_libdir to $LTLIBNAME.
+                            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir"
+                          fi
+                        fi
+                      fi
+                    fi
+                    ;;
+                  -l*)
+                    dnl Handle this in the next round.
+                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
+                    ;;
+                  *.la)
+                    dnl Handle this in the next round. Throw away the .la's
+                    dnl directory; it is already contained in a preceding -L
+                    dnl option.
+                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+                    ;;
+                  *)
+                    dnl Most likely an immediate library name.
+                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep"
+                    LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep"
+                    ;;
+                esac
+              done
+            fi
+          else
+            dnl Didn't find the library; assume it is in the system directories
+            dnl known to the linker and runtime loader. (All the system
+            dnl directories known to the linker should also be known to the
+            dnl runtime loader, otherwise the system is severely misconfigured.)
+            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
+            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name"
+          fi
+        fi
+      fi
+    done
+  done
+  if test "X$rpathdirs" != "X"; then
+    if test -n "$hardcode_libdir_separator"; then
+      dnl Weird platform: only the last -rpath option counts, the user must
+      dnl pass all path elements in one option. We can arrange that for a
+      dnl single library, but not when more than one $LIBNAMEs are used.
+      alldirs=
+      for found_dir in $rpathdirs; do
+        alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir"
+      done
+      dnl Note: hardcode_libdir_flag_spec uses $libdir and $wl.
+      acl_save_libdir="$libdir"
+      libdir="$alldirs"
+      eval flag=\"$hardcode_libdir_flag_spec\"
+      libdir="$acl_save_libdir"
+      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+    else
+      dnl The -rpath options are cumulative.
+      for found_dir in $rpathdirs; do
+        acl_save_libdir="$libdir"
+        libdir="$found_dir"
+        eval flag=\"$hardcode_libdir_flag_spec\"
+        libdir="$acl_save_libdir"
+        LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+      done
+    fi
+  fi
+  if test "X$ltrpathdirs" != "X"; then
+    dnl When using libtool, the option that works for both libraries and
+    dnl executables is -R. The -R options are cumulative.
+    for found_dir in $ltrpathdirs; do
+      LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir"
+    done
+  fi
+])
+
+dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR,
+dnl unless already present in VAR.
+dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes
+dnl contains two or three consecutive elements that belong together.
+AC_DEFUN([AC_LIB_APPENDTOVAR],
+[
+  for element in [$2]; do
+    haveit=
+    for x in $[$1]; do
+      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      [$1]="${[$1]}${[$1]:+ }$element"
+    fi
+  done
+])
diff --git a/src/sed/config/lib-prefix.m4 b/src/sed/config/lib-prefix.m4
new file mode 100644
index 0000000..b8b79ab
--- /dev/null
+++ b/src/sed/config/lib-prefix.m4
@@ -0,0 +1,148 @@
+# lib-prefix.m4 serial 1 (gettext-0.11)
+dnl Copyright (C) 2001-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
+dnl to access previously installed libraries. The basic assumption is that
+dnl a user will want packages to use other packages he previously installed
+dnl with the same --prefix option.
+dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
+dnl libraries, but is otherwise very convenient.
+AC_DEFUN([AC_LIB_PREFIX],
+[
+  AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  dnl By default, look in $includedir and $libdir.
+  use_additional=yes
+  AC_LIB_WITH_FINAL_PREFIX([
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+  ])
+  AC_ARG_WITH([lib-prefix],
+[  --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
+  --without-lib-prefix    don't search for libraries in includedir and libdir],
+[
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+        AC_LIB_WITH_FINAL_PREFIX([
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+        ])
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/lib"
+      fi
+    fi
+])
+  if test $use_additional = yes; then
+    dnl Potentially add $additional_includedir to $CPPFLAGS.
+    dnl But don't add it
+    dnl   1. if it's the standard /usr/include,
+    dnl   2. if it's already present in $CPPFLAGS,
+    dnl   3. if it's /usr/local/include and we are using GCC on Linux,
+    dnl   4. if it doesn't exist as a directory.
+    if test "X$additional_includedir" != "X/usr/include"; then
+      haveit=
+      for x in $CPPFLAGS; do
+        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+        if test "X$x" = "X-I$additional_includedir"; then
+          haveit=yes
+          break
+        fi
+      done
+      if test -z "$haveit"; then
+        if test "X$additional_includedir" = "X/usr/local/include"; then
+          if test -n "$GCC"; then
+            case $host_os in
+              linux*) haveit=yes;;
+            esac
+          fi
+        fi
+        if test -z "$haveit"; then
+          if test -d "$additional_includedir"; then
+            dnl Really add $additional_includedir to $CPPFLAGS.
+            CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
+          fi
+        fi
+      fi
+    fi
+    dnl Potentially add $additional_libdir to $LDFLAGS.
+    dnl But don't add it
+    dnl   1. if it's the standard /usr/lib,
+    dnl   2. if it's already present in $LDFLAGS,
+    dnl   3. if it's /usr/local/lib and we are using GCC on Linux,
+    dnl   4. if it doesn't exist as a directory.
+    if test "X$additional_libdir" != "X/usr/lib"; then
+      haveit=
+      for x in $LDFLAGS; do
+        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+        if test "X$x" = "X-L$additional_libdir"; then
+          haveit=yes
+          break
+        fi
+      done
+      if test -z "$haveit"; then
+        if test "X$additional_libdir" = "X/usr/local/lib"; then
+          if test -n "$GCC"; then
+            case $host_os in
+              linux*) haveit=yes;;
+            esac
+          fi
+        fi
+        if test -z "$haveit"; then
+          if test -d "$additional_libdir"; then
+            dnl Really add $additional_libdir to $LDFLAGS.
+            LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
+          fi
+        fi
+      fi
+    fi
+  fi
+])
+
+dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
+dnl acl_final_exec_prefix, containing the values to which $prefix and
+dnl $exec_prefix will expand at the end of the configure script.
+AC_DEFUN([AC_LIB_PREPARE_PREFIX],
+[
+  dnl Unfortunately, prefix and exec_prefix get only finally determined
+  dnl at the end of configure.
+  if test "X$prefix" = "XNONE"; then
+    acl_final_prefix="$ac_default_prefix"
+  else
+    acl_final_prefix="$prefix"
+  fi
+  if test "X$exec_prefix" = "XNONE"; then
+    acl_final_exec_prefix='${prefix}'
+  else
+    acl_final_exec_prefix="$exec_prefix"
+  fi
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
+  prefix="$acl_save_prefix"
+])
+
+dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
+dnl variables prefix and exec_prefix bound to the values they will have
+dnl at the end of the configure script.
+AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
+[
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  $1
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+])
diff --git a/src/sed/config/mdate-sh b/src/sed/config/mdate-sh
new file mode 100755
index 0000000..caed933
--- /dev/null
+++ b/src/sed/config/mdate-sh
@@ -0,0 +1,170 @@
+#!/bin/sh
+# Get modification time of a file or directory and pretty-print it.
+
+scriptversion=2003-11-09.00
+
+# Copyright (C) 1995, 1996, 1997, 2003  Free Software Foundation, Inc.
+# written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+case $1 in
+  '')
+     echo "$0: No file.  Try \`$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: mdate-sh [--help] [--version] FILE
+
+Pretty-print the modification time of FILE.
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit 0
+    ;;
+  -v | --v*)
+    echo "mdate-sh $scriptversion"
+    exit 0
+    ;;
+esac
+
+# Prevent date giving response in another language.
+LANG=C
+export LANG
+LC_ALL=C
+export LC_ALL
+LC_TIME=C
+export LC_TIME
+
+save_arg1="$1"
+
+# Find out how to get the extended ls output of a file or directory.
+if ls -L /dev/null 1>/dev/null 2>&1; then
+  ls_command='ls -L -l -d'
+else
+  ls_command='ls -l -d'
+fi
+
+# A `ls -l' line looks as follows on OS/2.
+#  drwxrwx---        0 Aug 11  2001 foo
+# This differs from Unix, which adds ownership information.
+#  drwxrwx---   2 root  root      4096 Aug 11  2001 foo
+#
+# To find the date, we split the line on spaces and iterate on words
+# until we find a month.  This cannot work with files whose owner is a
+# user named `Jan', or `Feb', etc.  However, it's unlikely that `/'
+# will be owned by a user whose name is a month.  So we first look at
+# the extended ls output of the root directory to decide how many
+# words should be skipped to get the date.
+
+# On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below.
+set - x`$ls_command /`
+
+# Find which argument is the month.
+month=
+command=
+until test $month
+do
+  shift
+  # Add another shift to the command.
+  command="$command shift;"
+  case $1 in
+    Jan) month=January; nummonth=1;;
+    Feb) month=February; nummonth=2;;
+    Mar) month=March; nummonth=3;;
+    Apr) month=April; nummonth=4;;
+    May) month=May; nummonth=5;;
+    Jun) month=June; nummonth=6;;
+    Jul) month=July; nummonth=7;;
+    Aug) month=August; nummonth=8;;
+    Sep) month=September; nummonth=9;;
+    Oct) month=October; nummonth=10;;
+    Nov) month=November; nummonth=11;;
+    Dec) month=December; nummonth=12;;
+  esac
+done
+
+# Get the extended ls output of the file or directory.
+set - x`eval "$ls_command \"\$save_arg1\""`
+
+# Remove all preceding arguments
+eval $command
+
+# Get the month.  Next argument is day, followed by the year or time.
+case $1 in
+  Jan) month=January; nummonth=1;;
+  Feb) month=February; nummonth=2;;
+  Mar) month=March; nummonth=3;;
+  Apr) month=April; nummonth=4;;
+  May) month=May; nummonth=5;;
+  Jun) month=June; nummonth=6;;
+  Jul) month=July; nummonth=7;;
+  Aug) month=August; nummonth=8;;
+  Sep) month=September; nummonth=9;;
+  Oct) month=October; nummonth=10;;
+  Nov) month=November; nummonth=11;;
+  Dec) month=December; nummonth=12;;
+esac
+
+day=$2
+
+# Here we have to deal with the problem that the ls output gives either
+# the time of day or the year.
+case $3 in
+  *:*) set `date`; eval year=\$$#
+       case $2 in
+	 Jan) nummonthtod=1;;
+	 Feb) nummonthtod=2;;
+	 Mar) nummonthtod=3;;
+	 Apr) nummonthtod=4;;
+	 May) nummonthtod=5;;
+	 Jun) nummonthtod=6;;
+	 Jul) nummonthtod=7;;
+	 Aug) nummonthtod=8;;
+	 Sep) nummonthtod=9;;
+	 Oct) nummonthtod=10;;
+	 Nov) nummonthtod=11;;
+	 Dec) nummonthtod=12;;
+       esac
+       # For the first six month of the year the time notation can also
+       # be used for files modified in the last year.
+       if (expr $nummonth \> $nummonthtod) > /dev/null;
+       then
+	 year=`expr $year - 1`
+       fi;;
+  *) year=$3;;
+esac
+
+# The result.
+echo $day $month $year
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
+# End:
diff --git a/src/sed/config/missing b/src/sed/config/missing
new file mode 100755
index 0000000..4c6e3b3
--- /dev/null
+++ b/src/sed/config/missing
@@ -0,0 +1,360 @@
+#! /bin/sh
+# Common stub for a few missing GNU programs while installing.
+
+scriptversion=2003-09-02.23
+
+# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003 
+#   Free Software Foundation, Inc.
+# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+if test $# -eq 0; then
+  echo 1>&2 "Try \`$0 --help' for more information"
+  exit 1
+fi
+
+run=:
+
+# In the cases where this matters, `missing' is being run in the
+# srcdir already.
+if test -f configure.ac; then
+  configure_ac=configure.ac
+else
+  configure_ac=configure.in
+fi
+
+msg="missing on your system"
+
+case "$1" in
+--run)
+  # Try to run requested program, and just exit if it succeeds.
+  run=
+  shift
+  "$@" && exit 0
+  # Exit code 63 means version mismatch.  This often happens
+  # when the user try to use an ancient version of a tool on
+  # a file that requires a minimum version.  In this case we
+  # we should proceed has if the program had been absent, or
+  # if --run hadn't been passed.
+  if test $? = 63; then
+    run=:
+    msg="probably too old"
+  fi
+  ;;
+esac
+
+# If it does not exist, or fails to run (possibly an outdated version),
+# try to emulate it.
+case "$1" in
+
+  -h|--h|--he|--hel|--help)
+    echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
+error status if there is no known handling for PROGRAM.
+
+Options:
+  -h, --help      display this help and exit
+  -v, --version   output version information and exit
+  --run           try to run the given command, and emulate it if it fails
+
+Supported PROGRAM values:
+  aclocal      touch file \`aclocal.m4'
+  autoconf     touch file \`configure'
+  autoheader   touch file \`config.h.in'
+  automake     touch all \`Makefile.in' files
+  bison        create \`y.tab.[ch]', if possible, from existing .[ch]
+  flex         create \`lex.yy.c', if possible, from existing .c
+  help2man     touch the output file
+  lex          create \`lex.yy.c', if possible, from existing .c
+  makeinfo     touch the output file
+  tar          try tar, gnutar, gtar, then tar without non-portable flags
+  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
+
+Send bug reports to <bug-automake@gnu.org>."
+    ;;
+
+  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+    echo "missing $scriptversion (GNU Automake)"
+    ;;
+
+  -*)
+    echo 1>&2 "$0: Unknown \`$1' option"
+    echo 1>&2 "Try \`$0 --help' for more information"
+    exit 1
+    ;;
+
+  aclocal*)
+    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+       # We have it, but it failed.
+       exit 1
+    fi
+
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
+         to install the \`Automake' and \`Perl' packages.  Grab them from
+         any GNU archive site."
+    touch aclocal.m4
+    ;;
+
+  autoconf)
+    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+       # We have it, but it failed.
+       exit 1
+    fi
+
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`${configure_ac}'.  You might want to install the
+         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
+         archive site."
+    touch configure
+    ;;
+
+  autoheader)
+    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+       # We have it, but it failed.
+       exit 1
+    fi
+
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`acconfig.h' or \`${configure_ac}'.  You might want
+         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
+         from any GNU archive site."
+    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
+    test -z "$files" && files="config.h"
+    touch_files=
+    for f in $files; do
+      case "$f" in
+      *:*) touch_files="$touch_files "`echo "$f" |
+				       sed -e 's/^[^:]*://' -e 's/:.*//'`;;
+      *) touch_files="$touch_files $f.in";;
+      esac
+    done
+    touch $touch_files
+    ;;
+
+  automake*)
+    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+       # We have it, but it failed.
+       exit 1
+    fi
+
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
+         You might want to install the \`Automake' and \`Perl' packages.
+         Grab them from any GNU archive site."
+    find . -type f -name Makefile.am -print |
+	   sed 's/\.am$/.in/' |
+	   while read f; do touch "$f"; done
+    ;;
+
+  autom4te)
+    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+       # We have it, but it failed.
+       exit 1
+    fi
+
+    echo 1>&2 "\
+WARNING: \`$1' is needed, but is $msg.
+         You might have modified some files without having the
+         proper tools for further handling them.
+         You can get \`$1' as part of \`Autoconf' from any GNU
+         archive site."
+
+    file=`echo "$*" | sed -n 's/.*--output[ =]*\([^ ]*\).*/\1/p'`
+    test -z "$file" && file=`echo "$*" | sed -n 's/.*-o[ ]*\([^ ]*\).*/\1/p'`
+    if test -f "$file"; then
+	touch $file
+    else
+	test -z "$file" || exec >$file
+	echo "#! /bin/sh"
+	echo "# Created by GNU Automake missing as a replacement of"
+	echo "#  $ $@"
+	echo "exit 0"
+	chmod +x $file
+	exit 1
+    fi
+    ;;
+
+  bison|yacc)
+    echo 1>&2 "\
+WARNING: \`$1' $msg.  You should only need it if
+         you modified a \`.y' file.  You may need the \`Bison' package
+         in order for those modifications to take effect.  You can get
+         \`Bison' from any GNU archive site."
+    rm -f y.tab.c y.tab.h
+    if [ $# -ne 1 ]; then
+        eval LASTARG="\${$#}"
+	case "$LASTARG" in
+	*.y)
+	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
+	    if [ -f "$SRCFILE" ]; then
+	         cp "$SRCFILE" y.tab.c
+	    fi
+	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
+	    if [ -f "$SRCFILE" ]; then
+	         cp "$SRCFILE" y.tab.h
+	    fi
+	  ;;
+	esac
+    fi
+    if [ ! -f y.tab.h ]; then
+	echo >y.tab.h
+    fi
+    if [ ! -f y.tab.c ]; then
+	echo 'main() { return 0; }' >y.tab.c
+    fi
+    ;;
+
+  lex|flex)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified a \`.l' file.  You may need the \`Flex' package
+         in order for those modifications to take effect.  You can get
+         \`Flex' from any GNU archive site."
+    rm -f lex.yy.c
+    if [ $# -ne 1 ]; then
+        eval LASTARG="\${$#}"
+	case "$LASTARG" in
+	*.l)
+	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
+	    if [ -f "$SRCFILE" ]; then
+	         cp "$SRCFILE" lex.yy.c
+	    fi
+	  ;;
+	esac
+    fi
+    if [ ! -f lex.yy.c ]; then
+	echo 'main() { return 0; }' >lex.yy.c
+    fi
+    ;;
+
+  help2man)
+    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+       # We have it, but it failed.
+       exit 1
+    fi
+
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+	 you modified a dependency of a manual page.  You may need the
+	 \`Help2man' package in order for those modifications to take
+	 effect.  You can get \`Help2man' from any GNU archive site."
+
+    file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
+    if test -z "$file"; then
+	file=`echo "$*" | sed -n 's/.*--output=\([^ ]*\).*/\1/p'`
+    fi
+    if [ -f "$file" ]; then
+	touch $file
+    else
+	test -z "$file" || exec >$file
+	echo ".ab help2man is required to generate this page"
+	exit 1
+    fi
+    ;;
+
+  makeinfo)
+    if test -z "$run" && (makeinfo --version) > /dev/null 2>&1; then
+       # We have makeinfo, but it failed.
+       exit 1
+    fi
+
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified a \`.texi' or \`.texinfo' file, or any other file
+         indirectly affecting the aspect of the manual.  The spurious
+         call might also be the consequence of using a buggy \`make' (AIX,
+         DU, IRIX).  You might want to install the \`Texinfo' package or
+         the \`GNU make' package.  Grab either from any GNU archive site."
+    file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
+    if test -z "$file"; then
+      file=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
+      file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $file`
+    fi
+    touch $file
+    ;;
+
+  tar)
+    shift
+    if test -n "$run"; then
+      echo 1>&2 "ERROR: \`tar' requires --run"
+      exit 1
+    fi
+
+    # We have already tried tar in the generic part.
+    # Look for gnutar/gtar before invocation to avoid ugly error
+    # messages.
+    if (gnutar --version > /dev/null 2>&1); then
+       gnutar "$@" && exit 0
+    fi
+    if (gtar --version > /dev/null 2>&1); then
+       gtar "$@" && exit 0
+    fi
+    firstarg="$1"
+    if shift; then
+	case "$firstarg" in
+	*o*)
+	    firstarg=`echo "$firstarg" | sed s/o//`
+	    tar "$firstarg" "$@" && exit 0
+	    ;;
+	esac
+	case "$firstarg" in
+	*h*)
+	    firstarg=`echo "$firstarg" | sed s/h//`
+	    tar "$firstarg" "$@" && exit 0
+	    ;;
+	esac
+    fi
+
+    echo 1>&2 "\
+WARNING: I can't seem to be able to run \`tar' with the given arguments.
+         You may want to install GNU tar or Free paxutils, or check the
+         command line arguments."
+    exit 1
+    ;;
+
+  *)
+    echo 1>&2 "\
+WARNING: \`$1' is needed, and is $msg.
+         You might have modified some files without having the
+         proper tools for further handling them.  Check the \`README' file,
+         it often tells you about the needed prerequisites for installing
+         this package.  You may also peek at any GNU archive site, in case
+         some other package would contain this missing \`$1' program."
+    exit 1
+    ;;
+esac
+
+exit 0
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
+# End:
diff --git a/src/sed/config/progtest.m4 b/src/sed/config/progtest.m4
new file mode 100644
index 0000000..443c8e3
--- /dev/null
+++ b/src/sed/config/progtest.m4
@@ -0,0 +1,59 @@
+# progtest.m4 serial 2 (gettext-0.10.40)
+dnl Copyright (C) 1996-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+# Search path for a program which passes the given test.
+
+dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
+dnl   TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
+AC_DEFUN([AM_PATH_PROG_WITH_TEST],
+[# Extract the first word of "$2", so it can be a program name with args.
+set dummy $2; ac_word=[$]2
+AC_MSG_CHECKING([for $ac_word])
+AC_CACHE_VAL(ac_cv_path_$1,
+[case "[$]$1" in
+  /*)
+  ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
+  ;;
+  *)
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+  for ac_dir in ifelse([$5], , $PATH, [$5]); do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      if [$3]; then
+	ac_cv_path_$1="$ac_dir/$ac_word"
+	break
+      fi
+    fi
+  done
+  IFS="$ac_save_ifs"
+dnl If no 4th arg is given, leave the cache variable unset,
+dnl so AC_PATH_PROGS will keep looking.
+ifelse([$4], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
+])dnl
+  ;;
+esac])dnl
+$1="$ac_cv_path_$1"
+if test ifelse([$4], , [-n "[$]$1"], ["[$]$1" != "$4"]); then
+  AC_MSG_RESULT([$]$1)
+else
+  AC_MSG_RESULT(no)
+fi
+AC_SUBST($1)dnl
+])
diff --git a/src/sed/config/stdbool.m4 b/src/sed/config/stdbool.m4
new file mode 100644
index 0000000..11804fe
--- /dev/null
+++ b/src/sed/config/stdbool.m4
@@ -0,0 +1,66 @@
+# Check for stdbool.h that conforms to C99.
+
+# Copyright (C) 2002-2003 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
+
+# This macro is only needed in autoconf <= 2.54.  Newer versions of autoconf
+# have this macro built-in.
+
+AC_DEFUN([AC_HEADER_STDBOOL],
+  [AC_CACHE_CHECK([for stdbool.h that conforms to C99],
+     [ac_cv_header_stdbool_h],
+     [AC_TRY_COMPILE(
+	[
+	  #include <stdbool.h>
+	  #ifndef bool
+	   "error: bool is not defined"
+	  #endif
+	  #ifndef false
+	   "error: false is not defined"
+	  #endif
+	  #if false
+	   "error: false is not 0"
+	  #endif
+	  #ifndef true
+	   "error: false is not defined"
+	  #endif
+	  #if true != 1
+	   "error: true is not 1"
+	  #endif
+	  #ifndef __bool_true_false_are_defined
+	   "error: __bool_true_false_are_defined is not defined"
+	  #endif
+
+	  struct s { _Bool s: 1; _Bool t; } s;
+
+	  char a[true == 1 ? 1 : -1];
+	  char b[false == 0 ? 1 : -1];
+	  char c[__bool_true_false_are_defined == 1 ? 1 : -1];
+	  char d[(bool) -0.5 == true ? 1 : -1];
+	  bool e = &s;
+	  char f[(_Bool) -0.0 == false ? 1 : -1];
+	  char g[true];
+	  char h[sizeof (_Bool)];
+	  char i[sizeof s.t];
+	],
+	[ return !a + !b + !c + !d + !e + !f + !g + !h + !i; ],
+	[ac_cv_header_stdbool_h=yes],
+	[ac_cv_header_stdbool_h=no])])
+   AC_CHECK_TYPES([_Bool])
+   if test $ac_cv_header_stdbool_h = yes; then
+     AC_DEFINE(HAVE_STDBOOL_H, 1, [Define to 1 if stdbool.h conforms to C99.])
+   fi])
diff --git a/src/sed/config/strverscmp.m4 b/src/sed/config/strverscmp.m4
new file mode 100644
index 0000000..bb82336
--- /dev/null
+++ b/src/sed/config/strverscmp.m4
@@ -0,0 +1,24 @@
+# strverscmp.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRVERSCMP],
+[
+  dnl Persuade glibc <string.h> to declare strverscmp().
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  AC_REPLACE_FUNCS(strverscmp)
+  if test $ac_cv_func_strverscmp = no; then
+    gl_PREREQ_STRVERSCMP
+  fi
+])
+
+# Prerequisites of lib/strverscmp.c.
+AC_DEFUN([gl_PREREQ_STRVERSCMP], [
+  :
+])
+
diff --git a/src/sed/config/texi2dvi b/src/sed/config/texi2dvi
new file mode 100755
index 0000000..0286bd7
--- /dev/null
+++ b/src/sed/config/texi2dvi
@@ -0,0 +1,656 @@
+#! /bin/sh
+# texi2dvi --- produce DVI (or PDF) files from Texinfo (or LaTeX) sources.
+#
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2001,
+# 2002, 2003 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, you can either send email to this
+# program's maintainer or write to: The Free Software Foundation,
+# Inc.; 51 Franklin Street, Fifth Floor; Boston, MA 02110-1301, USA.
+#
+# Original author: Noah Friedman <friedman@gnu.org>.
+#
+# Please send bug reports, etc. to bug-texinfo@gnu.org.
+# If possible, please send a copy of the output of the script called with
+# the `--debug' option when making a bug report.
+
+program=`echo $0 | sed -e 's!.*/!!'`
+version="texi2dvi (GNU Texinfo 4.5)
+
+Copyright (C) 2003 Free Software Foundation, Inc.
+There is NO warranty.  You may redistribute this software
+under the terms of the GNU General Public License.
+For more information about these matters, see the files named COPYING."
+
+usage="Usage: $program [OPTION]... FILE...
+
+Run each Texinfo or LaTeX FILE through TeX in turn until all
+cross-references are resolved, building all indices.  The directory
+containing each FILE is searched for included files.  The suffix of FILE
+is used to determine its language (LaTeX or Texinfo).
+
+Makeinfo is used to perform Texinfo macro expansion before running TeX
+when needed.
+
+Operation modes:
+  -b, --batch         no interaction
+  -c, --clean         remove all auxiliary files
+  -D, --debug         turn on shell debugging (set -x)
+  -h, --help          display this help and exit successfully
+  -o, --output=OFILE  leave output in OFILE (implies --clean);
+                      Only one input FILE may be specified in this case
+  -q, --quiet         no output unless errors (implies --batch)
+  -s, --silent        same as --quiet
+  -v, --version       display version information and exit successfully
+  -V, --verbose       report on what is done
+
+TeX tuning:
+  -@                   use @input instead of \input; for preloaded Texinfo
+  -e, -E, --expand     force macro expansion using makeinfo
+  -I DIR               search DIR for Texinfo files
+  -l, --language=LANG  specify the LANG of FILE (LaTeX or Texinfo)
+  -p, --pdf            use pdftex or pdflatex for processing
+  -t, --texinfo=CMD    insert CMD after @setfilename in copy of input file
+                       multiple values accumulate
+
+The values of the BIBTEX, LATEX (or PDFLATEX), MAKEINDEX, MAKEINFO,
+TEX (or PDFTEX), and TEXINDEX environment variables are used to run
+those commands, if they are set.
+
+Email bug reports to <bug-texinfo@gnu.org>,
+general questions and discussion to <help-texinfo@gnu.org>.
+Texinfo home page: http://www.gnu.org/software/texinfo/"
+
+# Initialize variables for option overriding and otherwise.
+# Don't use `unset' since old bourne shells don't have this command.
+# Instead, assign them an empty value.
+batch=false     # eval for batch mode
+clean=
+debug=
+escape='\'
+expand=         # t for expansion via makeinfo
+miincludes=     # makeinfo include path
+oformat=dvi
+oname=          # --output
+quiet=          # by default let the tools' message be displayed
+set_language=
+textra=
+tmpdir=${TMPDIR:-/tmp}/t2d$$  # avoid collisions on 8.3 filesystems.
+txincludes=     # TEXINPUTS extensions, with trailing colon
+txiprereq=19990129 # minimum texinfo.tex version to have macro expansion
+verbose=false   # echo for verbose mode
+
+orig_pwd=`pwd`
+
+# Systems which define $COMSPEC or $ComSpec use semicolons to separate
+# directories in TEXINPUTS.
+if test -n "$COMSPEC$ComSpec"; then
+  path_sep=";"
+else
+  path_sep=":"
+fi
+
+# Pacify verbose cds.
+CDPATH=${ZSH_VERSION+.}$path_sep
+
+# In case someone crazy insists on using grep -E.
+: ${EGREP=egrep}
+
+# Save this so we can construct a new TEXINPUTS path for each file.
+TEXINPUTS_orig="$TEXINPUTS"
+# Unfortunately makeindex does not read TEXINPUTS.
+INDEXSTYLE_orig="$INDEXSTYLE"
+export TEXINPUTS INDEXSTYLE
+
+# Push a token among the arguments that will be used to notice when we
+# ended options/arguments parsing.
+# Use "set dummy ...; shift" rather than 'set - ..." because on
+# Solaris set - turns off set -x (but keeps set -e).
+# Use ${1+"$@"} rather than "$@" because Digital Unix and Ultrix 4.3
+# still expand "$@" to a single argument (the empty string) rather
+# than nothing at all.
+arg_sep="$$--$$"
+set dummy ${1+"$@"} "$arg_sep"; shift
+
+# 
+# Parse command line arguments.
+while test x"$1" != x"$arg_sep"; do
+
+  # Handle --option=value by splitting apart and putting back on argv.
+  case "$1" in
+    --*=*)
+      opt=`echo "$1" | sed -e 's/=.*//'`
+      val=`echo "$1" | sed -e 's/[^=]*=//'`
+      shift
+      set dummy "$opt" "$val" ${1+"$@"}; shift
+      ;;
+  esac
+
+  # This recognizes --quark as --quiet.  So what.
+  case "$1" in
+    -@ ) escape=@;;
+    # Silently and without documentation accept -b and --b[atch] as synonyms.
+    -b | --b*) batch=eval;;
+    -q | -s | --q* | --s*) quiet=t; batch=eval;;
+    -c | --c*) clean=t;;
+    -D | --d*) debug=t;;
+    -e | -E | --e*) expand=t;;
+    -h | --h*) echo "$usage"; exit 0;;
+    -I | --I*)
+      shift
+      miincludes="$miincludes -I $1"
+      txincludes="$txincludes$1$path_sep"
+      ;;
+    -l | --l*) shift; set_language=$1;;
+    -o | --o*)
+      shift
+      clean=t
+      case "$1" in
+        /* | ?:/*) oname=$1;;
+                *) oname="$orig_pwd/$1";;
+      esac;;
+    -p | --p*) oformat=pdf;;
+    -t | --t*) shift; textra="$textra\\
+$1";;
+    -v | --vers*) echo "$version"; exit 0;;
+    -V | --verb*) verbose=echo;;
+    --) # What remains are not options.
+      shift
+      while test x"$1" != x"$arg_sep"; do
+        set dummy ${1+"$@"} "$1"; shift
+        shift
+      done
+      break;;
+    -*)
+      echo "$0: Unknown or ambiguous option \`$1'." >&2
+      echo "$0: Try \`--help' for more information." >&2
+      exit 1;;
+    *) set dummy ${1+"$@"} "$1"; shift;;
+   esac
+   shift
+done
+# Pop the token
+shift
+
+# Interpret remaining command line args as filenames.
+case $# in
+ 0)
+  echo "$0: Missing file arguments." >&2
+  echo "$0: Try \`--help' for more information." >&2
+  exit 2
+  ;;
+ 1) ;;
+ *)
+  if test -n "$oname"; then
+    echo "$0: Can't use option \`--output' with more than one argument." >&2
+    exit 2
+  fi
+  ;;
+esac
+
+# Prepare the temporary directory.  Remove it at exit, unless debugging.
+if test -z "$debug"; then
+  trap "cd / && rm -rf $tmpdir" 0 1 2 15
+fi
+
+# Create the temporary directory with strict rights
+(umask 077 && mkdir $tmpdir) || exit 1
+
+# Prepare the tools we might need.  This may be extra work in some
+# cases, but improves the readibility of the script.
+utildir=$tmpdir/utils
+mkdir $utildir || exit 1
+
+# A sed script that preprocesses Texinfo sources in order to keep the
+# iftex sections only.  We want to remove non TeX sections, and
+# comment (with `@c texi2dvi') TeX sections so that makeinfo does not
+# try to parse them.  Nevertheless, while commenting TeX sections,
+# don't comment @macro/@end macro so that makeinfo does propagate
+# them.  Unfortunately makeinfo --iftex --no-ifhtml --no-ifinfo
+# doesn't work well enough (yet) to use that, so work around with sed.
+comment_iftex_sed=$utildir/comment.sed
+cat <<EOF >$comment_iftex_sed
+/^@tex/,/^@end tex/{
+  s/^/@c texi2dvi/
+}
+/^@iftex/,/^@end iftex/{
+  s/^/@c texi2dvi/
+  /^@c texi2dvi@macro/,/^@c texi2dvi@end macro/{
+    s/^@c texi2dvi//
+  }
+}
+/^@html/,/^@end html/{
+  s/^/@c (texi2dvi)/
+}
+/^@ifhtml/,/^@end ifhtml/{
+  s/^/@c (texi2dvi)/
+}
+/^@ifnottex/,/^@end ifnottex/{
+  s/^/@c (texi2dvi)/
+}
+/^@ifinfo/,/^@end ifinfo/{
+  /^@node/p
+  /^@menu/,/^@end menu/p
+  t
+  s/^/@c (texi2dvi)/
+}
+s/^@ifnotinfo/@c texi2dvi@ifnotinfo/
+s/^@end ifnotinfo/@c texi2dvi@end ifnotinfo/
+EOF
+# Uncommenting is simple: Remove any leading `@c texi2dvi'.
+uncomment_iftex_sed=$utildir/uncomment.sed
+cat <<EOF >$uncomment_iftex_sed
+s/^@c texi2dvi//
+EOF
+
+# A shell script that computes the list of xref files.
+# Takes the filename (without extension) of which we look for xref
+# files as argument.  The index files must be reported last.
+get_xref_files=$utildir/get_xref.sh
+cat <<\EOF >$get_xref_files
+#! /bin/sh
+
+# Get list of xref files (indexes, tables and lists).
+# Find all files having root filename with a two-letter extension,
+# saves the ones that are really Texinfo-related files.  .?o? catches
+# many files: .toc, .log, LaTeX tables and lists, FiXme's .lox, maybe more.
+for this_file in "$1".?o? "$1".aux "$1".?? "$1".idx; do
+  # If file is empty, skip it.
+  test -s "$this_file" || continue
+  # If the file is not suitable to be an index or xref file, don't
+  # process it.  The file can't be if its first character is not a
+  # backslash or single quote.
+  first_character=`sed -n '1s/^\(.\).*$/\1/p;q' $this_file`
+  if test "x$first_character" = "x\\" \
+     || test "x$first_character" = "x'"; then
+    xref_files="$xref_files ./$this_file"
+  fi
+done
+echo "$xref_files"
+EOF
+chmod 500 $get_xref_files
+
+# File descriptor usage:
+# 0 standard input
+# 1 standard output (--verbose messages)
+# 2 standard error
+# 3 some systems may open it to /dev/tty
+# 4 used on the Kubota Titan
+# 5 tools output (turned off by --quiet)
+
+# Tools' output.  If quiet, discard, else redirect to the message flow.
+if test "$quiet" = t; then
+  exec 5>/dev/null
+else
+  exec 5>&1
+fi
+
+# Enable tracing
+test "$debug" = t && set -x
+
+# 
+# TeXify files.
+
+for command_line_filename in ${1+"$@"}; do
+  $verbose "Processing $command_line_filename ..."
+
+  # If the COMMAND_LINE_FILENAME is not absolute (e.g., --debug.tex),
+  # prepend `./' in order to avoid that the tools take it as an option.
+  echo "$command_line_filename" | $EGREP '^(/|[A-z]:/)' >/dev/null \
+  || command_line_filename="./$command_line_filename"
+
+  # See if the file exists.  If it doesn't we're in trouble since, even
+  # though the user may be able to reenter a valid filename at the tex
+  # prompt (assuming they're attending the terminal), this script won't
+  # be able to find the right xref files and so forth.
+  if test ! -r "$command_line_filename"; then
+    echo "$0: Could not read $command_line_filename, skipping." >&2
+    continue
+  fi
+
+  # Get the name of the current directory.  We want the full path
+  # because in clean mode we are in tmp, in which case a relative
+  # path has no meaning.
+  filename_dir=`echo $command_line_filename | sed 's!/[^/]*$!!;s!^$!.!'`
+  filename_dir=`cd "$filename_dir" >/dev/null && pwd`
+
+  # Strip directory part but leave extension.
+  filename_ext=`basename "$command_line_filename"`
+  # Strip extension.
+  filename_noext=`echo "$filename_ext" | sed 's/\.[^.]*$//'`
+  ext=`echo "$filename_ext" | sed 's/^.*\.//'`
+
+  # _src.  Use same basename since we want to generate aux files with
+  # the same basename as the manual.  If --expand, then output the
+  # macro-expanded file to here, else copy the original file.
+  tmpdir_src=$tmpdir/src
+  filename_src=$tmpdir_src/$filename_noext.$ext
+
+  # _xtr.  The file with the user's extra commands.
+  tmpdir_xtr=$tmpdir/xtr
+  filename_xtr=$tmpdir_xtr/$filename_noext.$ext
+
+  # _bak.  Copies of the previous xref files (another round is run if
+  # they differ from the new one).
+  tmpdir_bak=$tmpdir/bak
+
+  # Make all those directories and give up if we can't succeed.
+  mkdir $tmpdir_src $tmpdir_xtr $tmpdir_bak || exit 1
+
+  # Source file might include additional sources.
+  # We want `.:$orig_pwd' before anything else.  (We'll add `.:' later
+  # after all other directories have been turned into absolute paths.)
+  # `.' goes first to ensure that any old .aux, .cps,
+  # etc. files in ${directory} don't get used in preference to fresher
+  # files in `.'.  Include orig_pwd in case we are in clean mode, where
+  # we've cd'd to a temp directory.
+  common="$orig_pwd$path_sep$filename_dir$path_sep$txincludes"
+   TEXINPUTS="$common$TEXINPUTS_orig"
+  INDEXSTYLE="$common$INDEXSTYLE_orig"
+
+  # Convert relative paths to absolute paths, so we can run in another
+  # directory (e.g., in --clean mode, or during the macro-support
+  # detection.)
+  #
+  # Empty path components are meaningful to tex.  We rewrite them
+  # as `EMPTY' so they don't get lost when we split on $path_sep.
+   TEXINPUTS=`echo $TEXINPUTS  |sed 's/^:/EMPTY:/;s/:$/:EMPTY/;s/::/:EMPTY:/g'`
+  INDEXSTYLE=`echo $INDEXSTYLE |sed 's/^:/EMPTY:/;s/:$/:EMPTY/;s/::/:EMPTY:/g'`
+  save_IFS=$IFS
+  IFS=$path_sep
+  set x $TEXINPUTS; shift
+  TEXINPUTS=.
+  for dir
+  do
+    case $dir in
+      EMPTY)
+        TEXINPUTS=$TEXINPUTS$path_sep
+        ;;
+      [\\/]* | ?:[\\/]*)        # Absolute paths don't need to be expansed.
+        TEXINPUTS=$TEXINPUTS$path_sep$dir
+        ;;
+      *)
+        abs=`cd "$dir" && pwd` && TEXINPUTS=$TEXINPUTS$path_sep$abs
+        ;;
+    esac
+  done
+  set x $INDEXSTYLE; shift
+  INDEXSTYLE=.
+  for dir
+  do
+    case $dir in
+      EMPTY)
+        INDEXSTYLE=$INDEXSTYLE$path_sep
+        ;;
+      [\\/]* | ?:[\\/]*)        # Absolute paths don't need to be expansed.
+        INDEXSTYLE=$INDEXSTYLE$path_sep$dir
+        ;;
+      *)
+        abs=`cd "$dir" && pwd` && INDEXSTYLE=$INDEXSTYLE$path_sep$abs
+        ;;
+    esac
+  done
+  IFS=$save_IFS
+
+  # If the user explicitly specified the language, use that.
+  # Otherwise, if the first line is \input texinfo, assume it's texinfo.
+  # Otherwise, guess from the file extension.
+  if test -n "$set_language"; then
+    language=$set_language
+  elif sed 1q "$command_line_filename" | grep 'input texinfo' >/dev/null; then
+    language=texinfo
+  else
+    language=
+  fi
+
+  # Get the type of the file (latex or texinfo) from the given language
+  # we just guessed, or from the file extension if not set yet.
+  case ${language:-$filename_ext} in
+    [lL]a[tT]e[xX] | *.ltx | *.tex)
+      # Assume a LaTeX file.  LaTeX needs bibtex and uses latex for
+      # compilation.  No makeinfo.
+      bibtex=${BIBTEX:-bibtex}
+      makeinfo= # no point in running makeinfo on latex source.
+      texindex=${MAKEINDEX:-makeindex}
+      if test $oformat = dvi; then
+        tex=${LATEX:-latex}
+      else
+        tex=${PDFLATEX:-pdflatex}
+      fi
+      ;;
+
+    *)
+      # Assume a Texinfo file.  Texinfo files need makeinfo, texindex and tex.
+      bibtex=
+      texindex=${TEXINDEX:-texindex}
+      if test $oformat = dvi; then
+        tex=${TEX:-tex}
+      else
+        tex=${PDFTEX:-pdftex}
+      fi
+      # Unless required by the user, makeinfo expansion is wanted only
+      # if texinfo.tex is too old.
+      if test "$expand" = t; then
+        makeinfo=${MAKEINFO:-makeinfo}
+      else
+        # Check if texinfo.tex performs macro expansion by looking for
+        # its version.  The version is a date of the form YEAR-MO-DA.
+        # We don't need to use [0-9] to match the digits since anyway
+        # the comparison with $txiprereq, a number, will fail with non
+        # digits.
+        txiversion_tex=txiversion.tex
+        echo '\input texinfo.tex @bye' >$tmpdir/$txiversion_tex
+        # Run in the tmpdir to avoid leaving files.
+        eval `cd $tmpdir >/dev/null &&
+              $tex $txiversion_tex 2>/dev/null |
+              sed -n 's/^.*\[\(.*\)version \(....\)-\(..\)-\(..\).*$/txiformat=\1 txiversion="\2\3\4"/p'`
+        $verbose "texinfo.tex preloaded as \`$txiformat', version is \`$txiversion' ..."
+        if test "$txiprereq" -le "$txiversion" >/dev/null 2>&1; then
+          makeinfo=
+        else
+          makeinfo=${MAKEINFO:-makeinfo}
+        fi
+        # As long as we had to run TeX, offer the user this convenience
+        if test "$txiformat" = Texinfo; then
+          escape=@
+        fi
+      fi
+      ;;
+  esac
+
+  # Expand macro commands in the original source file using Makeinfo.
+  # Always use `end' footnote style, since the `separate' style
+  #   generates different output (arguably this is a bug in -E).
+  # Discard main info output, the user asked to run TeX, not makeinfo.
+  if test -n "$makeinfo"; then
+    $verbose "Macro-expanding $command_line_filename to $filename_src ..."
+    sed -f $comment_iftex_sed "$command_line_filename" \
+      | $makeinfo --footnote-style=end -I "$filename_dir" $miincludes \
+        -o /dev/null --macro-expand=- \
+      | sed -f $uncomment_iftex_sed >"$filename_src"
+    filename_input=$filename_src
+  fi
+
+  # If makeinfo failed (or was not even run), use the original file as input.
+  if test $? -ne 0 \
+     || test ! -r "$filename_src"; then
+    $verbose "Reverting to $command_line_filename ..."
+    filename_input=$filename_dir/$filename_ext
+  fi
+
+  # Used most commonly for @finalout, @smallbook, etc.
+  if test -n "$textra"; then
+    $verbose "Inserting extra commands: $textra"
+    sed '/^@setfilename/a\
+'"$textra" "$filename_input" >$filename_xtr
+    filename_input=$filename_xtr
+  fi
+
+  # If clean mode was specified, then move to the temporary directory.
+  if test "$clean" = t; then
+    $verbose "cd $tmpdir_src"
+    cd "$tmpdir_src" || exit 1
+  fi
+
+  while :; do # will break out of loop below
+    orig_xref_files=`$get_xref_files "$filename_noext"`
+
+    # Save copies of originals for later comparison.
+    if test -n "$orig_xref_files"; then
+      $verbose "Backing up xref files: `echo $orig_xref_files | sed 's|\./||g'`"
+      cp $orig_xref_files $tmpdir_bak
+    fi
+
+    # Run bibtex on current file.
+    # - If its input (AUX) exists.
+    # - If AUX contains both `\bibdata' and `\bibstyle'.
+    # - If some citations are missing (LOG contains `Citation').
+    #   or the LOG complains of a missing .bbl
+    #
+    # We run bibtex first, because I can see reasons for the indexes
+    # to change after bibtex is run, but I see no reason for the
+    # converse.
+    #
+    # Don't try to be too smart.  Running bibtex only if the bbl file
+    # exists and is older than the LaTeX file is wrong, since the
+    # document might include files that have changed.  Because there
+    # can be several AUX (if there are \include's), but a single LOG,
+    # looking for missing citations in LOG is easier, though we take
+    # the risk to match false messages.
+    if test -n "$bibtex" \
+       && test -r "$filename_noext.aux" \
+       && test -r "$filename_noext.log" \
+       && (grep '^\\bibdata[{]'  "$filename_noext.aux" \
+           && grep '^\\bibstyle[{]' "$filename_noext.aux" \
+           && (grep 'Warning:.*Citation.*undefined' "$filename_noext.log" \
+               || grep 'No file .*\.bbl\.' "$filename_noext.log")) \
+          >/dev/null 2>&1; \
+    then
+      $verbose "Running $bibtex $filename_noext ..."
+      if $bibtex "$filename_noext" >&5; then :; else
+        echo "$0: $bibtex exited with bad status, quitting." >&2
+        exit 1
+      fi
+    fi
+
+    # What we'll run texindex on -- exclude non-index files.
+    # Since we know index files are last, it is correct to remove everything
+    # before .aux and .?o?.  But don't really do <anything>o<anything>
+    # -- don't match whitespace as <anything>.
+    # Otherwise, if orig_xref_files contains something like
+    #   foo.xo foo.whatever
+    # the space after the o will get matched.
+    index_files=`echo "$orig_xref_files" \
+                 | sed "s!.*\.aux!!g;
+                        s!./$filename_noext\.[^ ]o[^ ]!!g;
+                        s/^[ ]*//;s/[ ]*$//"`
+    # Run texindex (or makeindex) on current index files.  If they
+    # already exist, and after running TeX a first time the index
+    # files don't change, then there's no reason to run TeX again.
+    # But we won't know that if the index files are out of date or
+    # nonexistent.
+    if test -n "$texindex" && test -n "$index_files"; then
+      $verbose "Running $texindex $index_files ..."
+      if $texindex $index_files 2>&5 1>&2; then :; else
+         echo "$0: $texindex exited with bad status, quitting." >&2
+         exit 1
+      fi
+    fi
+
+    # Finally, run TeX.
+    # Prevent $ESCAPE from being interpreted by the shell if it happens
+    # to be `/'.
+    $batch tex_args="\\${escape}nonstopmode\ \\${escape}input"
+    cmd="$tex $tex_args $filename_input"
+    $verbose "Running $cmd ..."
+    if $cmd >&5; then :; else
+      echo "$0: $tex exited with bad status, quitting." >&2
+      echo "$0: see $filename_noext.log for errors." >&2
+      test "$clean" = t \
+        && cp "$filename_noext.log" "$orig_pwd"
+      exit 1
+    fi
+
+
+    # Decide if looping again is needed.
+    finished=t
+
+    # LaTeX (and the package changebar) report in the LOG file if it
+    # should be rerun.  This is needed for files included from
+    # subdirs, since texi2dvi does not try to compare xref files in
+    # subdirs.  Performing xref files test is still good since LaTeX
+    # does not report changes in xref files.
+    if grep "Rerun to get" "$filename_noext.log" >/dev/null 2>&1; then
+      finished=
+    fi
+
+    # Check if xref files changed.
+    new_xref_files=`$get_xref_files "$filename_noext"`
+    $verbose "Original xref files = `echo $orig_xref_files | sed 's|\./||g'`"
+    $verbose "New xref files      = `echo $new_xref_files | sed 's|\./||g'`"
+
+    # If old and new lists don't at least have the same file list,
+    # then one file or another has definitely changed.
+    test "x$orig_xref_files" != "x$new_xref_files" && finished=
+
+    # File list is the same.  We must compare each file until we find
+    # a difference.
+    if test -n "$finished"; then
+      for this_file in $new_xref_files; do
+        $verbose "Comparing xref file `echo $this_file | sed 's|\./||g'` ..."
+        # cmp -s returns nonzero exit status if files differ.
+        if cmp -s "$this_file" "$tmpdir_bak/$this_file"; then :; else
+          # We only need to keep comparing until we find one that
+          # differs, because we'll have to run texindex & tex again no
+          # matter how many more there might be.
+          finished=
+          $verbose "xref file `echo $this_file | sed 's|\./||g'` differed ..."
+          test "$debug" = t && diff -c "$tmpdir_bak/$this_file" "$this_file"
+          break
+        fi
+      done
+    fi
+
+    # If finished, exit the loop, else rerun the loop.
+    test -n "$finished" && break
+  done
+
+  # If we were in clean mode, compilation was in a tmp directory.
+  # Copy the DVI (or PDF) file into the directory where the compilation
+  # has been done.  (The temp dir is about to get removed anyway.)
+  # We also return to the original directory so that
+  # - the next file is processed in correct conditions
+  # - the temporary file can be removed
+  if test -n "$clean"; then
+    if test -n "$oname"; then
+       dest=$oname
+    else
+       dest=$orig_pwd
+    fi
+    $verbose "Copying $oformat file from `pwd` to $dest"
+    cp -p "./$filename_noext.$oformat" "$dest"
+    cd / # in case $orig_pwd is on a different drive (for DOS)
+    cd $orig_pwd || exit 1
+  fi
+
+  # Remove temporary files.
+  if test "x$debug" = "x"; then
+    $verbose "Removing $tmpdir_src $tmpdir_xtr $tmpdir_bak ..."
+    cd /
+    rm -rf $tmpdir_src $tmpdir_xtr $tmpdir_bak
+  fi
+done
+
+$verbose "$0 done."
+exit 0 # exit successfully, not however we ended the loop.
diff --git a/src/sed/config/texinfo.tex b/src/sed/config/texinfo.tex
new file mode 100644
index 0000000..e5bdedc
--- /dev/null
+++ b/src/sed/config/texinfo.tex
@@ -0,0 +1,6996 @@
+% texinfo.tex -- TeX macros to handle Texinfo files.
+%
+% Load plain if necessary, i.e., if running under initex.
+\expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
+%
+\def\texinfoversion{2004-07-31.11}
+%
+% Copyright (C) 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
+% 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
+% Foundation, Inc.
+%
+% This texinfo.tex file is free software; you can redistribute it and/or
+% modify it under the terms of the GNU General Public License as
+% published by the Free Software Foundation; either version 2, or (at
+% your option) any later version.
+%
+% This texinfo.tex file is distributed in the hope that it will be
+% useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+% of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+% General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with this texinfo.tex file; see the file COPYING.  If not, write
+% to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+% Boston, MA 02110-1301, USA.
+%
+% As a special exception, when this file is read by TeX when processing
+% a Texinfo source document, you may use the result without
+% restriction.  (This has been our intent since Texinfo was invented.)
+%
+% Please try the latest version of texinfo.tex before submitting bug
+% reports; you can get the latest version from:
+%   http://www.gnu.org/software/texinfo/ (the Texinfo home page), or
+%   ftp://tug.org/tex/texinfo.tex
+%     (and all CTAN mirrors, see http://www.ctan.org).
+% The texinfo.tex in any given distribution could well be out
+% of date, so if that's what you're using, please check.
+%
+% Send bug reports to bug-texinfo@gnu.org.  Please include including a
+% complete document in each bug report with which we can reproduce the
+% problem.  Patches are, of course, greatly appreciated.
+%
+% To process a Texinfo manual with TeX, it's most reliable to use the
+% texi2dvi shell script that comes with the distribution.  For a simple
+% manual foo.texi, however, you can get away with this:
+%   tex foo.texi
+%   texindex foo.??
+%   tex foo.texi
+%   tex foo.texi
+%   dvips foo.dvi -o  # or whatever; this makes foo.ps.
+% The extra TeX runs get the cross-reference information correct.
+% Sometimes one run after texindex suffices, and sometimes you need more
+% than two; texi2dvi does it as many times as necessary.
+%
+% It is possible to adapt texinfo.tex for other languages, to some
+% extent.  You can get the existing language-specific files from the
+% full Texinfo distribution.
+%
+% The GNU Texinfo home page is http://www.gnu.org/software/texinfo.
+
+
+\message{Loading texinfo [version \texinfoversion]:}
+
+% If in a .fmt file, print the version number
+% and turn on active characters that we couldn't do earlier because
+% they might have appeared in the input file name.
+\everyjob{\message{[Texinfo version \texinfoversion]}%
+  \catcode`+=\active \catcode`\_=\active}
+
+\message{Basics,}
+\chardef\other=12
+
+% We never want plain's \outer definition of \+ in Texinfo.
+% For @tex, we can use \tabalign.
+\let\+ = \relax
+
+% Save some plain tex macros whose names we will redefine.
+\let\ptexb=\b
+\let\ptexbullet=\bullet
+\let\ptexc=\c
+\let\ptexcomma=\,
+\let\ptexdot=\.
+\let\ptexdots=\dots
+\let\ptexend=\end
+\let\ptexequiv=\equiv
+\let\ptexexclam=\!
+\let\ptexfootnote=\footnote
+\let\ptexgtr=>
+\let\ptexhat=^
+\let\ptexi=\i
+\let\ptexindent=\indent
+\let\ptexnoindent=\noindent
+\let\ptexinsert=\insert
+\let\ptexlbrace=\{
+\let\ptexless=<
+\let\ptexplus=+
+\let\ptexrbrace=\}
+\let\ptexslash=\/
+\let\ptexstar=\*
+\let\ptext=\t
+
+% If this character appears in an error message or help string, it
+% starts a new line in the output.
+\newlinechar = `^^J
+
+% Use TeX 3.0's \inputlineno to get the line number, for better error
+% messages, but if we're using an old version of TeX, don't do anything.
+%
+\ifx\inputlineno\thisisundefined
+  \let\linenumber = \empty % Pre-3.0.
+\else
+  \def\linenumber{l.\the\inputlineno:\space}
+\fi
+
+% Set up fixed words for English if not already set.
+\ifx\putwordAppendix\undefined  \gdef\putwordAppendix{Appendix}\fi
+\ifx\putwordChapter\undefined   \gdef\putwordChapter{Chapter}\fi
+\ifx\putwordfile\undefined      \gdef\putwordfile{file}\fi
+\ifx\putwordin\undefined        \gdef\putwordin{in}\fi
+\ifx\putwordIndexIsEmpty\undefined     \gdef\putwordIndexIsEmpty{(Index is empty)}\fi
+\ifx\putwordIndexNonexistent\undefined \gdef\putwordIndexNonexistent{(Index is nonexistent)}\fi
+\ifx\putwordInfo\undefined      \gdef\putwordInfo{Info}\fi
+\ifx\putwordInstanceVariableof\undefined \gdef\putwordInstanceVariableof{Instance Variable of}\fi
+\ifx\putwordMethodon\undefined  \gdef\putwordMethodon{Method on}\fi
+\ifx\putwordNoTitle\undefined   \gdef\putwordNoTitle{No Title}\fi
+\ifx\putwordof\undefined        \gdef\putwordof{of}\fi
+\ifx\putwordon\undefined        \gdef\putwordon{on}\fi
+\ifx\putwordpage\undefined      \gdef\putwordpage{page}\fi
+\ifx\putwordsection\undefined   \gdef\putwordsection{section}\fi
+\ifx\putwordSection\undefined   \gdef\putwordSection{Section}\fi
+\ifx\putwordsee\undefined       \gdef\putwordsee{see}\fi
+\ifx\putwordSee\undefined       \gdef\putwordSee{See}\fi
+\ifx\putwordShortTOC\undefined  \gdef\putwordShortTOC{Short Contents}\fi
+\ifx\putwordTOC\undefined       \gdef\putwordTOC{Table of Contents}\fi
+%
+\ifx\putwordMJan\undefined \gdef\putwordMJan{January}\fi
+\ifx\putwordMFeb\undefined \gdef\putwordMFeb{February}\fi
+\ifx\putwordMMar\undefined \gdef\putwordMMar{March}\fi
+\ifx\putwordMApr\undefined \gdef\putwordMApr{April}\fi
+\ifx\putwordMMay\undefined \gdef\putwordMMay{May}\fi
+\ifx\putwordMJun\undefined \gdef\putwordMJun{June}\fi
+\ifx\putwordMJul\undefined \gdef\putwordMJul{July}\fi
+\ifx\putwordMAug\undefined \gdef\putwordMAug{August}\fi
+\ifx\putwordMSep\undefined \gdef\putwordMSep{September}\fi
+\ifx\putwordMOct\undefined \gdef\putwordMOct{October}\fi
+\ifx\putwordMNov\undefined \gdef\putwordMNov{November}\fi
+\ifx\putwordMDec\undefined \gdef\putwordMDec{December}\fi
+%
+\ifx\putwordDefmac\undefined    \gdef\putwordDefmac{Macro}\fi
+\ifx\putwordDefspec\undefined   \gdef\putwordDefspec{Special Form}\fi
+\ifx\putwordDefvar\undefined    \gdef\putwordDefvar{Variable}\fi
+\ifx\putwordDefopt\undefined    \gdef\putwordDefopt{User Option}\fi
+\ifx\putwordDeffunc\undefined   \gdef\putwordDeffunc{Function}\fi
+
+% In some macros, we cannot use the `\? notation---the left quote is
+% in some cases the escape char.
+\chardef\colonChar = `\:
+\chardef\commaChar = `\,
+\chardef\dotChar   = `\.
+\chardef\exclamChar= `\!
+\chardef\questChar = `\?
+\chardef\semiChar  = `\;
+\chardef\underChar = `\_
+
+\chardef\spaceChar = `\ %
+\chardef\spacecat = 10
+\def\spaceisspace{\catcode\spaceChar=\spacecat}
+
+% Ignore a token.
+%
+\def\gobble#1{}
+
+% The following is used inside several \edef's.
+\def\makecsname#1{\expandafter\noexpand\csname#1\endcsname}
+
+% Hyphenation fixes.
+\hyphenation{
+  Flor-i-da Ghost-script Ghost-view Mac-OS Post-Script
+  ap-pen-dix bit-map bit-maps
+  data-base data-bases eshell fall-ing half-way long-est man-u-script
+  man-u-scripts mini-buf-fer mini-buf-fers over-view par-a-digm
+  par-a-digms rath-er rec-tan-gu-lar ro-bot-ics se-vere-ly set-up spa-ces
+  spell-ing spell-ings
+  stand-alone strong-est time-stamp time-stamps which-ever white-space
+  wide-spread wrap-around
+}
+
+% Margin to add to right of even pages, to left of odd pages.
+\newdimen\bindingoffset
+\newdimen\normaloffset
+\newdimen\pagewidth \newdimen\pageheight
+
+% For a final copy, take out the rectangles
+% that mark overfull boxes (in case you have decided
+% that the text looks ok even though it passes the margin).
+%
+\def\finalout{\overfullrule=0pt}
+
+% @| inserts a changebar to the left of the current line.  It should
+% surround any changed text.  This approach does *not* work if the
+% change spans more than two lines of output.  To handle that, we would
+% have adopt a much more difficult approach (putting marks into the main
+% vertical list for the beginning and end of each change).
+%
+\def\|{%
+  % \vadjust can only be used in horizontal mode.
+  \leavevmode
+  %
+  % Append this vertical mode material after the current line in the output.
+  \vadjust{%
+    % We want to insert a rule with the height and depth of the current
+    % leading; that is exactly what \strutbox is supposed to record.
+    \vskip-\baselineskip
+    %
+    % \vadjust-items are inserted at the left edge of the type.  So
+    % the \llap here moves out into the left-hand margin.
+    \llap{%
+      %
+      % For a thicker or thinner bar, change the `1pt'.
+      \vrule height\baselineskip width1pt
+      %
+      % This is the space between the bar and the text.
+      \hskip 12pt
+    }%
+  }%
+}
+
+% Sometimes it is convenient to have everything in the transcript file
+% and nothing on the terminal.  We don't just call \tracingall here,
+% since that produces some useless output on the terminal.  We also make
+% some effort to order the tracing commands to reduce output in the log
+% file; cf. trace.sty in LaTeX.
+%
+\def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
+\def\loggingall{%
+  \tracingstats2
+  \tracingpages1
+  \tracinglostchars2  % 2 gives us more in etex
+  \tracingparagraphs1
+  \tracingoutput1
+  \tracingmacros2
+  \tracingrestores1
+  \showboxbreadth\maxdimen \showboxdepth\maxdimen
+  \ifx\eTeXversion\undefined\else % etex gives us more logging
+    \tracingscantokens1
+    \tracingifs1
+    \tracinggroups1
+    \tracingnesting2
+    \tracingassigns1
+  \fi
+  \tracingcommands3  % 3 gives us more in etex
+  \errorcontextlines16
+}%
+
+% add check for \lastpenalty to plain's definitions.  If the last thing
+% we did was a \nobreak, we don't want to insert more space.
+%
+\def\smallbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\smallskipamount
+  \removelastskip\penalty-50\smallskip\fi\fi}
+\def\medbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\medskipamount
+  \removelastskip\penalty-100\medskip\fi\fi}
+\def\bigbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\bigskipamount
+  \removelastskip\penalty-200\bigskip\fi\fi}
+
+% For @cropmarks command.
+% Do @cropmarks to get crop marks.
+%
+\newif\ifcropmarks
+\let\cropmarks = \cropmarkstrue
+%
+% Dimensions to add cropmarks at corners.
+% Added by P. A. MacKay, 12 Nov. 1986
+%
+\newdimen\outerhsize \newdimen\outervsize % set by the paper size routines
+\newdimen\cornerlong  \cornerlong=1pc
+\newdimen\cornerthick \cornerthick=.3pt
+\newdimen\topandbottommargin \topandbottommargin=.75in
+
+% Main output routine.
+\chardef\PAGE = 255
+\output = {\onepageout{\pagecontents\PAGE}}
+
+\newbox\headlinebox
+\newbox\footlinebox
+
+% \onepageout takes a vbox as an argument.  Note that \pagecontents
+% does insertions, but you have to call it yourself.
+\def\onepageout#1{%
+  \ifcropmarks \hoffset=0pt \else \hoffset=\normaloffset \fi
+  %
+  \ifodd\pageno  \advance\hoffset by \bindingoffset
+  \else \advance\hoffset by -\bindingoffset\fi
+  %
+  % Do this outside of the \shipout so @code etc. will be expanded in
+  % the headline as they should be, not taken literally (outputting ''code).
+  \setbox\headlinebox = \vbox{\let\hsize=\pagewidth \makeheadline}%
+  \setbox\footlinebox = \vbox{\let\hsize=\pagewidth \makefootline}%
+  %
+  {%
+    % Have to do this stuff outside the \shipout because we want it to
+    % take effect in \write's, yet the group defined by the \vbox ends
+    % before the \shipout runs.
+    %
+    \escapechar = `\\     % use backslash in output files.
+    \indexdummies         % don't expand commands in the output.
+    \normalturnoffactive  % \ in index entries must not stay \, e.g., if
+                   % the page break happens to be in the middle of an example.
+    \shipout\vbox{%
+      % Do this early so pdf references go to the beginning of the page.
+      \ifpdfmakepagedest \pdfdest name{\the\pageno} xyz\fi
+      %
+      \ifcropmarks \vbox to \outervsize\bgroup
+        \hsize = \outerhsize
+        \vskip-\topandbottommargin
+        \vtop to0pt{%
+          \line{\ewtop\hfil\ewtop}%
+          \nointerlineskip
+          \line{%
+            \vbox{\moveleft\cornerthick\nstop}%
+            \hfill
+            \vbox{\moveright\cornerthick\nstop}%
+          }%
+          \vss}%
+        \vskip\topandbottommargin
+        \line\bgroup
+          \hfil % center the page within the outer (page) hsize.
+          \ifodd\pageno\hskip\bindingoffset\fi
+          \vbox\bgroup
+      \fi
+      %
+      \unvbox\headlinebox
+      \pagebody{#1}%
+      \ifdim\ht\footlinebox > 0pt
+        % Only leave this space if the footline is nonempty.
+        % (We lessened \vsize for it in \oddfootingxxx.)
+        % The \baselineskip=24pt in plain's \makefootline has no effect.
+        \vskip 2\baselineskip
+        \unvbox\footlinebox
+      \fi
+      %
+      \ifcropmarks
+          \egroup % end of \vbox\bgroup
+        \hfil\egroup % end of (centering) \line\bgroup
+        \vskip\topandbottommargin plus1fill minus1fill
+        \boxmaxdepth = \cornerthick
+        \vbox to0pt{\vss
+          \line{%
+            \vbox{\moveleft\cornerthick\nsbot}%
+            \hfill
+            \vbox{\moveright\cornerthick\nsbot}%
+          }%
+          \nointerlineskip
+          \line{\ewbot\hfil\ewbot}%
+        }%
+      \egroup % \vbox from first cropmarks clause
+      \fi
+    }% end of \shipout\vbox
+  }% end of group with \normalturnoffactive
+  \advancepageno
+  \ifnum\outputpenalty>-20000 \else\dosupereject\fi
+}
+
+\newinsert\margin \dimen\margin=\maxdimen
+
+\def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
+{\catcode`\@ =11
+\gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
+% marginal hacks, juha@viisa.uucp (Juha Takala)
+\ifvoid\margin\else % marginal info is present
+  \rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi
+\dimen@=\dp#1 \unvbox#1
+\ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
+\ifr@ggedbottom \kern-\dimen@ \vfil \fi}
+}
+
+% Here are the rules for the cropmarks.  Note that they are
+% offset so that the space between them is truly \outerhsize or \outervsize
+% (P. A. MacKay, 12 November, 1986)
+%
+\def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
+\def\nstop{\vbox
+  {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
+\def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
+\def\nsbot{\vbox
+  {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
+
+% Parse an argument, then pass it to #1.  The argument is the rest of
+% the input line (except we remove a trailing comment).  #1 should be a
+% macro which expects an ordinary undelimited TeX argument.
+%
+\def\parsearg{\parseargusing{}}
+\def\parseargusing#1#2{%
+  \def\next{#2}%
+  \begingroup
+    \obeylines
+    \spaceisspace
+    #1%
+    \parseargline\empty% Insert the \empty token, see \finishparsearg below.
+}
+
+{\obeylines %
+  \gdef\parseargline#1^^M{%
+    \endgroup % End of the group started in \parsearg.
+    \argremovecomment #1\comment\ArgTerm%
+  }%
+}
+
+% First remove any @comment, then any @c comment.
+\def\argremovecomment#1\comment#2\ArgTerm{\argremovec #1\c\ArgTerm}
+\def\argremovec#1\c#2\ArgTerm{\argcheckspaces#1\^^M\ArgTerm}
+
+% Each occurence of `\^^M' or `<space>\^^M' is replaced by a single space.
+%
+% \argremovec might leave us with trailing space, e.g.,
+%    @end itemize  @c foo
+% This space token undergoes the same procedure and is eventually removed
+% by \finishparsearg.
+%
+\def\argcheckspaces#1\^^M{\argcheckspacesX#1\^^M \^^M}
+\def\argcheckspacesX#1 \^^M{\argcheckspacesY#1\^^M}
+\def\argcheckspacesY#1\^^M#2\^^M#3\ArgTerm{%
+  \def\temp{#3}%
+  \ifx\temp\empty
+    % We cannot use \next here, as it holds the macro to run;
+    % thus we reuse \temp.
+    \let\temp\finishparsearg
+  \else
+    \let\temp\argcheckspaces
+  \fi
+  % Put the space token in:
+  \temp#1 #3\ArgTerm
+}
+
+% If a _delimited_ argument is enclosed in braces, they get stripped; so
+% to get _exactly_ the rest of the line, we had to prevent such situation.
+% We prepended an \empty token at the very beginning and we expand it now,
+% just before passing the control to \next.
+% (Similarily, we have to think about #3 of \argcheckspacesY above: it is
+% either the null string, or it ends with \^^M---thus there is no danger
+% that a pair of braces would be stripped.
+%
+% But first, we have to remove the trailing space token.
+%
+\def\finishparsearg#1 \ArgTerm{\expandafter\next\expandafter{#1}}
+
+% \parseargdef\foo{...}
+%	is roughly equivalent to
+% \def\foo{\parsearg\Xfoo}
+% \def\Xfoo#1{...}
+%
+% Actually, I use \csname\string\foo\endcsname, ie. \\foo, as it is my
+% favourite TeX trick.  --kasal, 16nov03
+
+\def\parseargdef#1{%
+  \expandafter \doparseargdef \csname\string#1\endcsname #1%
+}
+\def\doparseargdef#1#2{%
+  \def#2{\parsearg#1}%
+  \def#1##1%
+}
+
+% Several utility definitions with active space:
+{
+  \obeyspaces
+  \gdef\obeyedspace{ }
+
+  % Make each space character in the input produce a normal interword
+  % space in the output.  Don't allow a line break at this space, as this
+  % is used only in environments like @example, where each line of input
+  % should produce a line of output anyway.
+  %
+  \gdef\sepspaces{\obeyspaces\let =\tie}
+
+  % If an index command is used in an @example environment, any spaces
+  % therein should become regular spaces in the raw index file, not the
+  % expansion of \tie (\leavevmode \penalty \@M \ ).
+  \gdef\unsepspaces{\let =\space}
+}
+
+
+\def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
+
+% Define the framework for environments in texinfo.tex.  It's used like this:
+%
+%   \envdef\foo{...}
+%   \def\Efoo{...}
+%
+% It's the responsibility of \envdef to insert \begingroup before the
+% actual body; @end closes the group after calling \Efoo.  \envdef also
+% defines \thisenv, so the current environment is known; @end checks
+% whether the environment name matches.  The \checkenv macro can also be
+% used to check whether the current environment is the one expected.
+%
+% Non-false conditionals (@iftex, @ifset) don't fit into this, so they
+% are not treated as enviroments; they don't open a group.  (The
+% implementation of @end takes care not to call \endgroup in this
+% special case.)
+
+
+% At runtime, environments start with this:
+\def\startenvironment#1{\begingroup\def\thisenv{#1}}
+% initialize
+\let\thisenv\empty
+
+% ... but they get defined via ``\envdef\foo{...}'':
+\long\def\envdef#1#2{\def#1{\startenvironment#1#2}}
+\def\envparseargdef#1#2{\parseargdef#1{\startenvironment#1#2}}
+
+% Check whether we're in the right environment:
+\def\checkenv#1{%
+  \def\temp{#1}%
+  \ifx\thisenv\temp
+  \else
+    \badenverr
+  \fi
+}
+
+% Evironment mismatch, #1 expected:
+\def\badenverr{%
+  \errhelp = \EMsimple
+  \errmessage{This command can appear only \inenvironment\temp,
+    not \inenvironment\thisenv}%
+}
+\def\inenvironment#1{%
+  \ifx#1\empty
+    out of any environment%
+  \else
+    in environment \expandafter\string#1%
+  \fi
+}
+
+% @end foo executes the definition of \Efoo.
+% But first, it executes a specialized version of \checkenv
+%
+\parseargdef\end{%
+  \if 1\csname iscond.#1\endcsname
+  \else
+    % The general wording of \badenverr may not be ideal, but... --kasal, 06nov03
+    \expandafter\checkenv\csname#1\endcsname
+    \csname E#1\endcsname
+    \endgroup
+  \fi
+}
+
+\newhelp\EMsimple{Press RETURN to continue.}
+
+
+%% Simple single-character @ commands
+
+% @@ prints an @
+% Kludge this until the fonts are right (grr).
+\def\@{{\tt\char64}}
+
+% This is turned off because it was never documented
+% and you can use @w{...} around a quote to suppress ligatures.
+%% Define @` and @' to be the same as ` and '
+%% but suppressing ligatures.
+%\def\`{{`}}
+%\def\'{{'}}
+
+% Used to generate quoted braces.
+\def\mylbrace {{\tt\char123}}
+\def\myrbrace {{\tt\char125}}
+\let\{=\mylbrace
+\let\}=\myrbrace
+\begingroup
+  % Definitions to produce \{ and \} commands for indices,
+  % and @{ and @} for the aux file.
+  \catcode`\{ = \other \catcode`\} = \other
+  \catcode`\[ = 1 \catcode`\] = 2
+  \catcode`\! = 0 \catcode`\\ = \other
+  !gdef!lbracecmd[\{]%
+  !gdef!rbracecmd[\}]%
+  !gdef!lbraceatcmd[@{]%
+  !gdef!rbraceatcmd[@}]%
+!endgroup
+
+% @comma{} to avoid , parsing problems.
+\let\comma = ,
+
+% Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent
+% Others are defined by plain TeX: @` @' @" @^ @~ @= @u @v @H.
+\let\, = \c
+\let\dotaccent = \.
+\def\ringaccent#1{{\accent23 #1}}
+\let\tieaccent = \t
+\let\ubaraccent = \b
+\let\udotaccent = \d
+
+% Other special characters: @questiondown @exclamdown @ordf @ordm
+% Plain TeX defines: @AA @AE @O @OE @L (plus lowercase versions) @ss.
+\def\questiondown{?`}
+\def\exclamdown{!`}
+\def\ordf{\leavevmode\raise1ex\hbox{\selectfonts\lllsize \underbar{a}}}
+\def\ordm{\leavevmode\raise1ex\hbox{\selectfonts\lllsize \underbar{o}}}
+
+% Dotless i and dotless j, used for accents.
+\def\imacro{i}
+\def\jmacro{j}
+\def\dotless#1{%
+  \def\temp{#1}%
+  \ifx\temp\imacro \ptexi
+  \else\ifx\temp\jmacro \j
+  \else \errmessage{@dotless can be used only with i or j}%
+  \fi\fi
+}
+
+% The \TeX{} logo, as in plain, but resetting the spacing so that a
+% period following counts as ending a sentence.  (Idea found in latex.)
+%
+\edef\TeX{\TeX \spacefactor=1000 }
+
+% @LaTeX{} logo.  Not quite the same results as the definition in
+% latex.ltx, since we use a different font for the raised A; it's most
+% convenient for us to use an explicitly smaller font, rather than using
+% the \scriptstyle font (since we don't reset \scriptstyle and
+% \scriptscriptstyle).
+%
+\def\LaTeX{%
+  L\kern-.36em
+  {\setbox0=\hbox{T}%
+   \vbox to \ht0{\hbox{\selectfonts\lllsize A}\vss}}%
+  \kern-.15em
+  \TeX
+}
+
+% Be sure we're in horizontal mode when doing a tie, since we make space
+% equivalent to this in @example-like environments. Otherwise, a space
+% at the beginning of a line will start with \penalty -- and
+% since \penalty is valid in vertical mode, we'd end up putting the
+% penalty on the vertical list instead of in the new paragraph.
+{\catcode`@ = 11
+ % Avoid using \@M directly, because that causes trouble
+ % if the definition is written into an index file.
+ \global\let\tiepenalty = \@M
+ \gdef\tie{\leavevmode\penalty\tiepenalty\ }
+}
+
+% @: forces normal size whitespace following.
+\def\:{\spacefactor=1000 }
+
+% @* forces a line break.
+\def\*{\hfil\break\hbox{}\ignorespaces}
+
+% @/ allows a line break.
+\let\/=\allowbreak
+
+% @. is an end-of-sentence period.
+\def\.{.\spacefactor=3000 }
+
+% @! is an end-of-sentence bang.
+\def\!{!\spacefactor=3000 }
+
+% @? is an end-of-sentence query.
+\def\?{?\spacefactor=3000 }
+
+% @w prevents a word break.  Without the \leavevmode, @w at the
+% beginning of a paragraph, when TeX is still in vertical mode, would
+% produce a whole line of output instead of starting the paragraph.
+\def\w#1{\leavevmode\hbox{#1}}
+
+% @group ... @end group forces ... to be all on one page, by enclosing
+% it in a TeX vbox.  We use \vtop instead of \vbox to construct the box
+% to keep its height that of a normal line.  According to the rules for
+% \topskip (p.114 of the TeXbook), the glue inserted is
+% max (\topskip - \ht (first item), 0).  If that height is large,
+% therefore, no glue is inserted, and the space between the headline and
+% the text is small, which looks bad.
+%
+% Another complication is that the group might be very large.  This can
+% cause the glue on the previous page to be unduly stretched, because it
+% does not have much material.  In this case, it's better to add an
+% explicit \vfill so that the extra space is at the bottom.  The
+% threshold for doing this is if the group is more than \vfilllimit
+% percent of a page (\vfilllimit can be changed inside of @tex).
+%
+\newbox\groupbox
+\def\vfilllimit{0.7}
+%
+\envdef\group{%
+  \ifnum\catcode`\^^M=\active \else
+    \errhelp = \groupinvalidhelp
+    \errmessage{@group invalid in context where filling is enabled}%
+  \fi
+  \startsavinginserts
+  %
+  \setbox\groupbox = \vtop\bgroup
+    % Do @comment since we are called inside an environment such as
+    % @example, where each end-of-line in the input causes an
+    % end-of-line in the output.  We don't want the end-of-line after
+    % the `@group' to put extra space in the output.  Since @group
+    % should appear on a line by itself (according to the Texinfo
+    % manual), we don't worry about eating any user text.
+    \comment
+}
+%
+% The \vtop produces a box with normal height and large depth; thus, TeX puts
+% \baselineskip glue before it, and (when the next line of text is done)
+% \lineskip glue after it.  Thus, space below is not quite equal to space
+% above.  But it's pretty close.
+\def\Egroup{%
+    % To get correct interline space between the last line of the group
+    % and the first line afterwards, we have to propagate \prevdepth.
+    \endgraf % Not \par, as it may have been set to \lisppar.
+    \global\dimen1 = \prevdepth
+  \egroup           % End the \vtop.
+  % \dimen0 is the vertical size of the group's box.
+  \dimen0 = \ht\groupbox  \advance\dimen0 by \dp\groupbox
+  % \dimen2 is how much space is left on the page (more or less).
+  \dimen2 = \pageheight   \advance\dimen2 by -\pagetotal
+  % if the group doesn't fit on the current page, and it's a big big
+  % group, force a page break.
+  \ifdim \dimen0 > \dimen2
+    \ifdim \pagetotal < \vfilllimit\pageheight
+      \page
+    \fi
+  \fi
+  \box\groupbox
+  \prevdepth = \dimen1
+  \checkinserts
+}
+%
+% TeX puts in an \escapechar (i.e., `@') at the beginning of the help
+% message, so this ends up printing `@group can only ...'.
+%
+\newhelp\groupinvalidhelp{%
+group can only be used in environments such as @example,^^J%
+where each line of input produces a line of output.}
+
+% @need space-in-mils
+% forces a page break if there is not space-in-mils remaining.
+
+\newdimen\mil  \mil=0.001in
+
+% Old definition--didn't work.
+%\parseargdef\need{\par %
+%% This method tries to make TeX break the page naturally
+%% if the depth of the box does not fit.
+%{\baselineskip=0pt%
+%\vtop to #1\mil{\vfil}\kern -#1\mil\nobreak
+%\prevdepth=-1000pt
+%}}
+
+\parseargdef\need{%
+  % Ensure vertical mode, so we don't make a big box in the middle of a
+  % paragraph.
+  \par
+  %
+  % If the @need value is less than one line space, it's useless.
+  \dimen0 = #1\mil
+  \dimen2 = \ht\strutbox
+  \advance\dimen2 by \dp\strutbox
+  \ifdim\dimen0 > \dimen2
+    %
+    % Do a \strut just to make the height of this box be normal, so the
+    % normal leading is inserted relative to the preceding line.
+    % And a page break here is fine.
+    \vtop to #1\mil{\strut\vfil}%
+    %
+    % TeX does not even consider page breaks if a penalty added to the
+    % main vertical list is 10000 or more.  But in order to see if the
+    % empty box we just added fits on the page, we must make it consider
+    % page breaks.  On the other hand, we don't want to actually break the
+    % page after the empty box.  So we use a penalty of 9999.
+    %
+    % There is an extremely small chance that TeX will actually break the
+    % page at this \penalty, if there are no other feasible breakpoints in
+    % sight.  (If the user is using lots of big @group commands, which
+    % almost-but-not-quite fill up a page, TeX will have a hard time doing
+    % good page breaking, for example.)  However, I could not construct an
+    % example where a page broke at this \penalty; if it happens in a real
+    % document, then we can reconsider our strategy.
+    \penalty9999
+    %
+    % Back up by the size of the box, whether we did a page break or not.
+    \kern -#1\mil
+    %
+    % Do not allow a page break right after this kern.
+    \nobreak
+  \fi
+}
+
+% @br   forces paragraph break (and is undocumented).
+
+\let\br = \par
+
+% @page forces the start of a new page.
+%
+\def\page{\par\vfill\supereject}
+
+% @exdent text....
+% outputs text on separate line in roman font, starting at standard page margin
+
+% This records the amount of indent in the innermost environment.
+% That's how much \exdent should take out.
+\newskip\exdentamount
+
+% This defn is used inside fill environments such as @defun.
+\parseargdef\exdent{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}
+
+% This defn is used inside nofill environments such as @example.
+\parseargdef\nofillexdent{{\advance \leftskip by -\exdentamount
+  \leftline{\hskip\leftskip{\rm#1}}}}
+
+% @inmargin{WHICH}{TEXT} puts TEXT in the WHICH margin next to the current
+% paragraph.  For more general purposes, use the \margin insertion
+% class.  WHICH is `l' or `r'.
+%
+\newskip\inmarginspacing \inmarginspacing=1cm
+\def\strutdepth{\dp\strutbox}
+%
+\def\doinmargin#1#2{\strut\vadjust{%
+  \nobreak
+  \kern-\strutdepth
+  \vtop to \strutdepth{%
+    \baselineskip=\strutdepth
+    \vss
+    % if you have multiple lines of stuff to put here, you'll need to
+    % make the vbox yourself of the appropriate size.
+    \ifx#1l%
+      \llap{\ignorespaces #2\hskip\inmarginspacing}%
+    \else
+      \rlap{\hskip\hsize \hskip\inmarginspacing \ignorespaces #2}%
+    \fi
+    \null
+  }%
+}}
+\def\inleftmargin{\doinmargin l}
+\def\inrightmargin{\doinmargin r}
+%
+% @inmargin{TEXT [, RIGHT-TEXT]}
+% (if RIGHT-TEXT is given, use TEXT for left page, RIGHT-TEXT for right;
+% else use TEXT for both).
+%
+\def\inmargin#1{\parseinmargin #1,,\finish}
+\def\parseinmargin#1,#2,#3\finish{% not perfect, but better than nothing.
+  \setbox0 = \hbox{\ignorespaces #2}%
+  \ifdim\wd0 > 0pt
+    \def\lefttext{#1}%  have both texts
+    \def\righttext{#2}%
+  \else
+    \def\lefttext{#1}%  have only one text
+    \def\righttext{#1}%
+  \fi
+  %
+  \ifodd\pageno
+    \def\temp{\inrightmargin\righttext}% odd page -> outside is right margin
+  \else
+    \def\temp{\inleftmargin\lefttext}%
+  \fi
+  \temp
+}
+
+% @include file    insert text of that file as input.
+%
+\def\include{\parseargusing\filenamecatcodes\includezzz}
+\def\includezzz#1{%
+  \pushthisfilestack
+  \def\thisfile{#1}%
+  {%
+    \makevalueexpandable
+    \def\temp{\input #1 }%
+    \expandafter
+  }\temp
+  \popthisfilestack
+}
+\def\filenamecatcodes{%
+  \catcode`\\=\other
+  \catcode`~=\other
+  \catcode`^=\other
+  \catcode`_=\other
+  \catcode`|=\other
+  \catcode`<=\other
+  \catcode`>=\other
+  \catcode`+=\other
+  \catcode`-=\other
+}
+
+\def\pushthisfilestack{%
+  \expandafter\pushthisfilestackX\popthisfilestack\StackTerm
+}
+\def\pushthisfilestackX{%
+  \expandafter\pushthisfilestackY\thisfile\StackTerm
+}
+\def\pushthisfilestackY #1\StackTerm #2\StackTerm {%
+  \gdef\popthisfilestack{\gdef\thisfile{#1}\gdef\popthisfilestack{#2}}%
+}
+
+\def\popthisfilestack{\errthisfilestackempty}
+\def\errthisfilestackempty{\errmessage{Internal error:
+  the stack of filenames is empty.}}
+
+\def\thisfile{}
+
+% @center line
+% outputs that line, centered.
+%
+\parseargdef\center{%
+  \ifhmode
+    \let\next\centerH
+  \else
+    \let\next\centerV
+  \fi
+  \next{\hfil \ignorespaces#1\unskip \hfil}%
+}
+\def\centerH#1{%
+  {%
+    \hfil\break
+    \advance\hsize by -\leftskip
+    \advance\hsize by -\rightskip
+    \line{#1}%
+    \break
+  }%
+}
+\def\centerV#1{\line{\kern\leftskip #1\kern\rightskip}}
+
+% @sp n   outputs n lines of vertical space
+
+\parseargdef\sp{\vskip #1\baselineskip}
+
+% @comment ...line which is ignored...
+% @c is the same as @comment
+% @ignore ... @end ignore  is another way to write a comment
+
+\def\comment{\begingroup \catcode`\^^M=\other%
+\catcode`\@=\other \catcode`\{=\other \catcode`\}=\other%
+\commentxxx}
+{\catcode`\^^M=\other \gdef\commentxxx#1^^M{\endgroup}}
+
+\let\c=\comment
+
+% @paragraphindent NCHARS
+% We'll use ems for NCHARS, close enough.
+% NCHARS can also be the word `asis' or `none'.
+% We cannot feasibly implement @paragraphindent asis, though.
+%
+\def\asisword{asis} % no translation, these are keywords
+\def\noneword{none}
+%
+\parseargdef\paragraphindent{%
+  \def\temp{#1}%
+  \ifx\temp\asisword
+  \else
+    \ifx\temp\noneword
+      \defaultparindent = 0pt
+    \else
+      \defaultparindent = #1em
+    \fi
+  \fi
+  \parindent = \defaultparindent
+}
+
+% @exampleindent NCHARS
+% We'll use ems for NCHARS like @paragraphindent.
+% It seems @exampleindent asis isn't necessary, but
+% I preserve it to make it similar to @paragraphindent.
+\parseargdef\exampleindent{%
+  \def\temp{#1}%
+  \ifx\temp\asisword
+  \else
+    \ifx\temp\noneword
+      \lispnarrowing = 0pt
+    \else
+      \lispnarrowing = #1em
+    \fi
+  \fi
+}
+
+% @firstparagraphindent WORD
+% If WORD is `none', then suppress indentation of the first paragraph
+% after a section heading.  If WORD is `insert', then do indent at such
+% paragraphs.
+%
+% The paragraph indentation is suppressed or not by calling
+% \suppressfirstparagraphindent, which the sectioning commands do.
+% We switch the definition of this back and forth according to WORD.
+% By default, we suppress indentation.
+%
+\def\suppressfirstparagraphindent{\dosuppressfirstparagraphindent}
+\def\insertword{insert}
+%
+\parseargdef\firstparagraphindent{%
+  \def\temp{#1}%
+  \ifx\temp\noneword
+    \let\suppressfirstparagraphindent = \dosuppressfirstparagraphindent
+  \else\ifx\temp\insertword
+    \let\suppressfirstparagraphindent = \relax
+  \else
+    \errhelp = \EMsimple
+    \errmessage{Unknown @firstparagraphindent option `\temp'}%
+  \fi\fi
+}
+
+% Here is how we actually suppress indentation.  Redefine \everypar to
+% \kern backwards by \parindent, and then reset itself to empty.
+%
+% We also make \indent itself not actually do anything until the next
+% paragraph.
+%
+\gdef\dosuppressfirstparagraphindent{%
+  \gdef\indent{%
+    \restorefirstparagraphindent
+    \indent
+  }%
+  \gdef\noindent{%
+    \restorefirstparagraphindent
+    \noindent
+  }%
+  \global\everypar = {%
+    \kern -\parindent
+    \restorefirstparagraphindent
+  }%
+}
+
+\gdef\restorefirstparagraphindent{%
+  \global \let \indent = \ptexindent
+  \global \let \noindent = \ptexnoindent
+  \global \everypar = {}%
+}
+
+
+% @asis just yields its argument.  Used with @table, for example.
+%
+\def\asis#1{#1}
+
+% @math outputs its argument in math mode.
+%
+% One complication: _ usually means subscripts, but it could also mean
+% an actual _ character, as in @math{@var{some_variable} + 1}.  So make
+% _ active, and distinguish by seeing if the current family is \slfam,
+% which is what @var uses.
+{
+  \catcode\underChar = \active
+  \gdef\mathunderscore{%
+    \catcode\underChar=\active
+    \def_{\ifnum\fam=\slfam \_\else\sb\fi}%
+  }
+}
+% Another complication: we want \\ (and @\) to output a \ character.
+% FYI, plain.tex uses \\ as a temporary control sequence (why?), but
+% this is not advertised and we don't care.  Texinfo does not
+% otherwise define @\.
+%
+% The \mathchar is class=0=ordinary, family=7=ttfam, position=5C=\.
+\def\mathbackslash{\ifnum\fam=\ttfam \mathchar"075C \else\backslash \fi}
+%
+\def\math{%
+  \tex
+  \mathunderscore
+  \let\\ = \mathbackslash
+  \mathactive
+  $\finishmath
+}
+\def\finishmath#1{#1$\endgroup}  % Close the group opened by \tex.
+
+% Some active characters (such as <) are spaced differently in math.
+% We have to reset their definitions in case the @math was an argument
+% to a command which sets the catcodes (such as @item or @section).
+%
+{
+  \catcode`^ = \active
+  \catcode`< = \active
+  \catcode`> = \active
+  \catcode`+ = \active
+  \gdef\mathactive{%
+    \let^ = \ptexhat
+    \let< = \ptexless
+    \let> = \ptexgtr
+    \let+ = \ptexplus
+  }
+}
+
+% @bullet and @minus need the same treatment as @math, just above.
+\def\bullet{$\ptexbullet$}
+\def\minus{$-$}
+
+% @dots{} outputs an ellipsis using the current font.
+% We do .5em per period so that it has the same spacing in a typewriter
+% font as three actual period characters.
+%
+\def\dots{%
+  \leavevmode
+  \hbox to 1.5em{%
+    \hskip 0pt plus 0.25fil
+    .\hfil.\hfil.%
+    \hskip 0pt plus 0.5fil
+  }%
+}
+
+% @enddots{} is an end-of-sentence ellipsis.
+%
+\def\enddots{%
+  \dots
+  \spacefactor=3000
+}
+
+% @comma{} is so commas can be inserted into text without messing up
+% Texinfo's parsing.
+%
+\let\comma = ,
+
+% @refill is a no-op.
+\let\refill=\relax
+
+% If working on a large document in chapters, it is convenient to
+% be able to disable indexing, cross-referencing, and contents, for test runs.
+% This is done with @novalidate (before @setfilename).
+%
+\newif\iflinks \linkstrue % by default we want the aux files.
+\let\novalidate = \linksfalse
+
+% @setfilename is done at the beginning of every texinfo file.
+% So open here the files we need to have open while reading the input.
+% This makes it possible to make a .fmt file for texinfo.
+\def\setfilename{%
+   \fixbackslash  % Turn off hack to swallow `\input texinfo'.
+   \iflinks
+     \tryauxfile
+     % Open the new aux file.  TeX will close it automatically at exit.
+     \immediate\openout\auxfile=\jobname.aux
+   \fi % \openindices needs to do some work in any case.
+   \openindices
+   \let\setfilename=\comment % Ignore extra @setfilename cmds.
+   %
+   % If texinfo.cnf is present on the system, read it.
+   % Useful for site-wide @afourpaper, etc.
+   \openin 1 texinfo.cnf
+   \ifeof 1 \else \input texinfo.cnf \fi
+   \closein 1
+   %
+   \comment % Ignore the actual filename.
+}
+
+% Called from \setfilename.
+%
+\def\openindices{%
+  \newindex{cp}%
+  \newcodeindex{fn}%
+  \newcodeindex{vr}%
+  \newcodeindex{tp}%
+  \newcodeindex{ky}%
+  \newcodeindex{pg}%
+}
+
+% @bye.
+\outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
+
+
+\message{pdf,}
+% adobe `portable' document format
+\newcount\tempnum
+\newcount\lnkcount
+\newtoks\filename
+\newcount\filenamelength
+\newcount\pgn
+\newtoks\toksA
+\newtoks\toksB
+\newtoks\toksC
+\newtoks\toksD
+\newbox\boxA
+\newcount\countA
+\newif\ifpdf
+\newif\ifpdfmakepagedest
+
+% when pdftex is run in dvi mode, \pdfoutput is defined (so \pdfoutput=1
+% can be set).  So we test for \relax and 0 as well as \undefined,
+% borrowed from ifpdf.sty.
+\ifx\pdfoutput\undefined
+\else
+  \ifx\pdfoutput\relax
+  \else
+    \ifcase\pdfoutput
+    \else
+      \pdftrue
+    \fi
+  \fi
+\fi
+%
+\ifpdf
+  \input pdfcolor
+  \pdfcatalog{/PageMode /UseOutlines}%
+  \def\dopdfimage#1#2#3{%
+    \def\imagewidth{#2}%
+    \def\imageheight{#3}%
+    % without \immediate, pdftex seg faults when the same image is
+    % included twice.  (Version 3.14159-pre-1.0-unofficial-20010704.)
+    \ifnum\pdftexversion < 14
+      \immediate\pdfimage
+    \else
+      \immediate\pdfximage
+    \fi
+      \ifx\empty\imagewidth\else width \imagewidth \fi
+      \ifx\empty\imageheight\else height \imageheight \fi
+      \ifnum\pdftexversion<13
+         #1.pdf%
+       \else
+         {#1.pdf}%
+       \fi
+    \ifnum\pdftexversion < 14 \else
+      \pdfrefximage \pdflastximage
+    \fi}
+  \def\pdfmkdest#1{{%
+    % We have to set dummies so commands such as @code in a section title
+    % aren't expanded.
+    \atdummies
+    \normalturnoffactive
+    \pdfdest name{#1} xyz%
+  }}
+  \def\pdfmkpgn#1{#1}
+  \let\linkcolor = \Blue  % was Cyan, but that seems light?
+  \def\endlink{\Black\pdfendlink}
+  % Adding outlines to PDF; macros for calculating structure of outlines
+  % come from Petr Olsak
+  \def\expnumber#1{\expandafter\ifx\csname#1\endcsname\relax 0%
+    \else \csname#1\endcsname \fi}
+  \def\advancenumber#1{\tempnum=\expnumber{#1}\relax
+    \advance\tempnum by 1
+    \expandafter\xdef\csname#1\endcsname{\the\tempnum}}
+  %
+  % #1 is the section text.  #2 is the pdf expression for the number
+  % of subentries (or empty, for subsubsections).  #3 is the node
+  % text, which might be empty if this toc entry had no
+  % corresponding node.  #4 is the page number.
+  %
+  \def\dopdfoutline#1#2#3#4{%
+    % Generate a link to the node text if that exists; else, use the
+    % page number.  We could generate a destination for the section
+    % text in the case where a section has no node, but it doesn't
+    % seem worthwhile, since most documents are normally structured.
+    \def\pdfoutlinedest{#3}%
+    \ifx\pdfoutlinedest\empty \def\pdfoutlinedest{#4}\fi
+    %
+    \pdfoutline goto name{\pdfmkpgn{\pdfoutlinedest}}#2{#1}%
+  }
+  %
+  \def\pdfmakeoutlines{%
+    \begingroup
+      % Thanh's hack / proper braces in bookmarks
+      \edef\mylbrace{\iftrue \string{\else}\fi}\let\{=\mylbrace
+      \edef\myrbrace{\iffalse{\else\string}\fi}\let\}=\myrbrace
+      %
+      % Read toc silently, to get counts of subentries for \pdfoutline.
+      \def\numchapentry##1##2##3##4{%
+	\def\thischapnum{##2}%
+	\let\thissecnum\empty
+	\let\thissubsecnum\empty
+      }%
+      \def\numsecentry##1##2##3##4{%
+	\advancenumber{chap\thischapnum}%
+	\def\thissecnum{##2}%
+	\let\thissubsecnum\empty
+      }%
+      \def\numsubsecentry##1##2##3##4{%
+	\advancenumber{sec\thissecnum}%
+	\def\thissubsecnum{##2}%
+      }%
+      \def\numsubsubsecentry##1##2##3##4{%
+	\advancenumber{subsec\thissubsecnum}%
+      }%
+      \let\thischapnum\empty
+      \let\thissecnum\empty
+      \let\thissubsecnum\empty
+      %
+      % use \def rather than \let here because we redefine \chapentry et
+      % al. a second time, below.
+      \def\appentry{\numchapentry}%
+      \def\appsecentry{\numsecentry}%
+      \def\appsubsecentry{\numsubsecentry}%
+      \def\appsubsubsecentry{\numsubsubsecentry}%
+      \def\unnchapentry{\numchapentry}%
+      \def\unnsecentry{\numsecentry}%
+      \def\unnsubsecentry{\numsubsecentry}%
+      \def\unnsubsubsecentry{\numsubsubsecentry}%
+      \input \jobname.toc
+      %
+      % Read toc second time, this time actually producing the outlines.
+      % The `-' means take the \expnumber as the absolute number of
+      % subentries, which we calculated on our first read of the .toc above.
+      %
+      % We use the node names as the destinations.
+      \def\numchapentry##1##2##3##4{%
+        \dopdfoutline{##1}{count-\expnumber{chap##2}}{##3}{##4}}%
+      \def\numsecentry##1##2##3##4{%
+        \dopdfoutline{##1}{count-\expnumber{sec##2}}{##3}{##4}}%
+      \def\numsubsecentry##1##2##3##4{%
+        \dopdfoutline{##1}{count-\expnumber{subsec##2}}{##3}{##4}}%
+      \def\numsubsubsecentry##1##2##3##4{% count is always zero
+        \dopdfoutline{##1}{}{##3}{##4}}%
+      %
+      % PDF outlines are displayed using system fonts, instead of
+      % document fonts.  Therefore we cannot use special characters,
+      % since the encoding is unknown.  For example, the eogonek from
+      % Latin 2 (0xea) gets translated to a | character.  Info from
+      % Staszek Wawrykiewicz, 19 Jan 2004 04:09:24 +0100.
+      %
+      % xx to do this right, we have to translate 8-bit characters to
+      % their "best" equivalent, based on the @documentencoding.  Right
+      % now, I guess we'll just let the pdf reader have its way.
+      \indexnofonts
+      \turnoffactive
+      \input \jobname.toc
+    \endgroup
+  }
+  %
+  \def\makelinks #1,{%
+    \def\params{#1}\def\E{END}%
+    \ifx\params\E
+      \let\nextmakelinks=\relax
+    \else
+      \let\nextmakelinks=\makelinks
+      \ifnum\lnkcount>0,\fi
+      \picknum{#1}%
+      \startlink attr{/Border [0 0 0]}
+        goto name{\pdfmkpgn{\the\pgn}}%
+      \linkcolor #1%
+      \advance\lnkcount by 1%
+      \endlink
+    \fi
+    \nextmakelinks
+  }
+  \def\picknum#1{\expandafter\pn#1}
+  \def\pn#1{%
+    \def\p{#1}%
+    \ifx\p\lbrace
+      \let\nextpn=\ppn
+    \else
+      \let\nextpn=\ppnn
+      \def\first{#1}
+    \fi
+    \nextpn
+  }
+  \def\ppn#1{\pgn=#1\gobble}
+  \def\ppnn{\pgn=\first}
+  \def\pdfmklnk#1{\lnkcount=0\makelinks #1,END,}
+  \def\skipspaces#1{\def\PP{#1}\def\D{|}%
+    \ifx\PP\D\let\nextsp\relax
+    \else\let\nextsp\skipspaces
+      \ifx\p\space\else\addtokens{\filename}{\PP}%
+        \advance\filenamelength by 1
+      \fi
+    \fi
+    \nextsp}
+  \def\getfilename#1{\filenamelength=0\expandafter\skipspaces#1|\relax}
+  \ifnum\pdftexversion < 14
+    \let \startlink \pdfannotlink
+  \else
+    \let \startlink \pdfstartlink
+  \fi
+  \def\pdfurl#1{%
+    \begingroup
+      \normalturnoffactive\def\@{@}%
+      \makevalueexpandable
+      \leavevmode\Red
+      \startlink attr{/Border [0 0 0]}%
+        user{/Subtype /Link /A << /S /URI /URI (#1) >>}%
+    \endgroup}
+  \def\pdfgettoks#1.{\setbox\boxA=\hbox{\toksA={#1.}\toksB={}\maketoks}}
+  \def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks}
+  \def\adn#1{\addtokens{\toksC}{#1}\global\countA=1\let\next=\maketoks}
+  \def\poptoks#1#2|ENDTOKS|{\let\first=#1\toksD={#1}\toksA={#2}}
+  \def\maketoks{%
+    \expandafter\poptoks\the\toksA|ENDTOKS|\relax
+    \ifx\first0\adn0
+    \else\ifx\first1\adn1 \else\ifx\first2\adn2 \else\ifx\first3\adn3
+    \else\ifx\first4\adn4 \else\ifx\first5\adn5 \else\ifx\first6\adn6
+    \else\ifx\first7\adn7 \else\ifx\first8\adn8 \else\ifx\first9\adn9
+    \else
+      \ifnum0=\countA\else\makelink\fi
+      \ifx\first.\let\next=\done\else
+        \let\next=\maketoks
+        \addtokens{\toksB}{\the\toksD}
+        \ifx\first,\addtokens{\toksB}{\space}\fi
+      \fi
+    \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
+    \next}
+  \def\makelink{\addtokens{\toksB}%
+    {\noexpand\pdflink{\the\toksC}}\toksC={}\global\countA=0}
+  \def\pdflink#1{%
+    \startlink attr{/Border [0 0 0]} goto name{\pdfmkpgn{#1}}
+    \linkcolor #1\endlink}
+  \def\done{\edef\st{\global\noexpand\toksA={\the\toksB}}\st}
+\else
+  \let\pdfmkdest = \gobble
+  \let\pdfurl = \gobble
+  \let\endlink = \relax
+  \let\linkcolor = \relax
+  \let\pdfmakeoutlines = \relax
+\fi  % \ifx\pdfoutput
+
+
+\message{fonts,}
+
+% Change the current font style to #1, remembering it in \curfontstyle.
+% For now, we do not accumulate font styles: @b{@i{foo}} prints foo in
+% italics, not bold italics.
+%
+\def\setfontstyle#1{%
+  \def\curfontstyle{#1}% not as a control sequence, because we are \edef'd.
+  \csname ten#1\endcsname  % change the current font
+}
+
+% Select #1 fonts with the current style.
+%
+\def\selectfonts#1{\csname #1fonts\endcsname \csname\curfontstyle\endcsname}
+
+\def\rm{\fam=0 \setfontstyle{rm}}
+\def\it{\fam=\itfam \setfontstyle{it}}
+\def\sl{\fam=\slfam \setfontstyle{sl}}
+\def\bf{\fam=\bffam \setfontstyle{bf}}
+\def\tt{\fam=\ttfam \setfontstyle{tt}}
+
+% Texinfo sort of supports the sans serif font style, which plain TeX does not.
+% So we set up a \sf.
+\newfam\sffam
+\def\sf{\fam=\sffam \setfontstyle{sf}}
+\let\li = \sf % Sometimes we call it \li, not \sf.
+
+% We don't need math for this font style.
+\def\ttsl{\setfontstyle{ttsl}}
+
+% Default leading.
+\newdimen\textleading  \textleading = 13.2pt
+
+% Set the baselineskip to #1, and the lineskip and strut size
+% correspondingly.  There is no deep meaning behind these magic numbers
+% used as factors; they just match (closely enough) what Knuth defined.
+%
+\def\lineskipfactor{.08333}
+\def\strutheightpercent{.70833}
+\def\strutdepthpercent {.29167}
+%
+\def\setleading#1{%
+  \normalbaselineskip = #1\relax
+  \normallineskip = \lineskipfactor\normalbaselineskip
+  \normalbaselines
+  \setbox\strutbox =\hbox{%
+    \vrule width0pt height\strutheightpercent\baselineskip
+                    depth \strutdepthpercent \baselineskip
+  }%
+}
+
+% Set the font macro #1 to the font named #2, adding on the
+% specified font prefix (normally `cm').
+% #3 is the font's design size, #4 is a scale factor
+\def\setfont#1#2#3#4{\font#1=\fontprefix#2#3 scaled #4}
+
+% Use cm as the default font prefix.
+% To specify the font prefix, you must define \fontprefix
+% before you read in texinfo.tex.
+\ifx\fontprefix\undefined
+\def\fontprefix{cm}
+\fi
+% Support font families that don't use the same naming scheme as CM.
+\def\rmshape{r}
+\def\rmbshape{bx}               %where the normal face is bold
+\def\bfshape{b}
+\def\bxshape{bx}
+\def\ttshape{tt}
+\def\ttbshape{tt}
+\def\ttslshape{sltt}
+\def\itshape{ti}
+\def\itbshape{bxti}
+\def\slshape{sl}
+\def\slbshape{bxsl}
+\def\sfshape{ss}
+\def\sfbshape{ss}
+\def\scshape{csc}
+\def\scbshape{csc}
+
+% Text fonts (11.2pt, magstep1).
+\newcount\mainmagstep
+\ifx\bigger\relax
+  % not really supported.
+  \mainmagstep=\magstep1
+  \setfont\textrm\rmshape{12}{1000}
+  \setfont\texttt\ttshape{12}{1000}
+\else
+  \mainmagstep=\magstephalf
+  \setfont\textrm\rmshape{10}{\mainmagstep}
+  \setfont\texttt\ttshape{10}{\mainmagstep}
+\fi
+\setfont\textbf\bfshape{10}{\mainmagstep}
+\setfont\textit\itshape{10}{\mainmagstep}
+\setfont\textsl\slshape{10}{\mainmagstep}
+\setfont\textsf\sfshape{10}{\mainmagstep}
+\setfont\textsc\scshape{10}{\mainmagstep}
+\setfont\textttsl\ttslshape{10}{\mainmagstep}
+\font\texti=cmmi10 scaled \mainmagstep
+\font\textsy=cmsy10 scaled \mainmagstep
+
+% A few fonts for @defun names and args.
+\setfont\defbf\bfshape{10}{\magstep1}
+\setfont\deftt\ttshape{10}{\magstep1}
+\setfont\defttsl\ttslshape{10}{\magstep1}
+\def\df{\let\tentt=\deftt \let\tenbf = \defbf \let\tenttsl=\defttsl \bf}
+
+% Fonts for indices, footnotes, small examples (9pt).
+\setfont\smallrm\rmshape{9}{1000}
+\setfont\smalltt\ttshape{9}{1000}
+\setfont\smallbf\bfshape{10}{900}
+\setfont\smallit\itshape{9}{1000}
+\setfont\smallsl\slshape{9}{1000}
+\setfont\smallsf\sfshape{9}{1000}
+\setfont\smallsc\scshape{10}{900}
+\setfont\smallttsl\ttslshape{10}{900}
+\font\smalli=cmmi9
+\font\smallsy=cmsy9
+
+% Fonts for small examples (8pt).
+\setfont\smallerrm\rmshape{8}{1000}
+\setfont\smallertt\ttshape{8}{1000}
+\setfont\smallerbf\bfshape{10}{800}
+\setfont\smallerit\itshape{8}{1000}
+\setfont\smallersl\slshape{8}{1000}
+\setfont\smallersf\sfshape{8}{1000}
+\setfont\smallersc\scshape{10}{800}
+\setfont\smallerttsl\ttslshape{10}{800}
+\font\smalleri=cmmi8
+\font\smallersy=cmsy8
+
+% Fonts for title page (20.4pt):
+\setfont\titlerm\rmbshape{12}{\magstep3}
+\setfont\titleit\itbshape{10}{\magstep4}
+\setfont\titlesl\slbshape{10}{\magstep4}
+\setfont\titlett\ttbshape{12}{\magstep3}
+\setfont\titlettsl\ttslshape{10}{\magstep4}
+\setfont\titlesf\sfbshape{17}{\magstep1}
+\let\titlebf=\titlerm
+\setfont\titlesc\scbshape{10}{\magstep4}
+\font\titlei=cmmi12 scaled \magstep3
+\font\titlesy=cmsy10 scaled \magstep4
+\def\authorrm{\secrm}
+\def\authortt{\sectt}
+
+% Chapter (and unnumbered) fonts (17.28pt).
+\setfont\chaprm\rmbshape{12}{\magstep2}
+\setfont\chapit\itbshape{10}{\magstep3}
+\setfont\chapsl\slbshape{10}{\magstep3}
+\setfont\chaptt\ttbshape{12}{\magstep2}
+\setfont\chapttsl\ttslshape{10}{\magstep3}
+\setfont\chapsf\sfbshape{17}{1000}
+\let\chapbf=\chaprm
+\setfont\chapsc\scbshape{10}{\magstep3}
+\font\chapi=cmmi12 scaled \magstep2
+\font\chapsy=cmsy10 scaled \magstep3
+
+% Section fonts (14.4pt).
+\setfont\secrm\rmbshape{12}{\magstep1}
+\setfont\secit\itbshape{10}{\magstep2}
+\setfont\secsl\slbshape{10}{\magstep2}
+\setfont\sectt\ttbshape{12}{\magstep1}
+\setfont\secttsl\ttslshape{10}{\magstep2}
+\setfont\secsf\sfbshape{12}{\magstep1}
+\let\secbf\secrm
+\setfont\secsc\scbshape{10}{\magstep2}
+\font\seci=cmmi12 scaled \magstep1
+\font\secsy=cmsy10 scaled \magstep2
+
+% Subsection fonts (13.15pt).
+\setfont\ssecrm\rmbshape{12}{\magstephalf}
+\setfont\ssecit\itbshape{10}{1315}
+\setfont\ssecsl\slbshape{10}{1315}
+\setfont\ssectt\ttbshape{12}{\magstephalf}
+\setfont\ssecttsl\ttslshape{10}{1315}
+\setfont\ssecsf\sfbshape{12}{\magstephalf}
+\let\ssecbf\ssecrm
+\setfont\ssecsc\scbshape{10}{1315}
+\font\sseci=cmmi12 scaled \magstephalf
+\font\ssecsy=cmsy10 scaled 1315
+
+% Reduced fonts for @acro in text (10pt).
+\setfont\reducedrm\rmshape{10}{1000}
+\setfont\reducedtt\ttshape{10}{1000}
+\setfont\reducedbf\bfshape{10}{1000}
+\setfont\reducedit\itshape{10}{1000}
+\setfont\reducedsl\slshape{10}{1000}
+\setfont\reducedsf\sfshape{10}{1000}
+\setfont\reducedsc\scshape{10}{1000}
+\setfont\reducedttsl\ttslshape{10}{1000}
+\font\reducedi=cmmi10
+\font\reducedsy=cmsy10
+
+% In order for the font changes to affect most math symbols and letters,
+% we have to define the \textfont of the standard families.  Since
+% texinfo doesn't allow for producing subscripts and superscripts except
+% in the main text, we don't bother to reset \scriptfont and
+% \scriptscriptfont (which would also require loading a lot more fonts).
+%
+\def\resetmathfonts{%
+  \textfont0=\tenrm \textfont1=\teni \textfont2=\tensy
+  \textfont\itfam=\tenit \textfont\slfam=\tensl \textfont\bffam=\tenbf
+  \textfont\ttfam=\tentt \textfont\sffam=\tensf
+}
+
+% The font-changing commands redefine the meanings of \tenSTYLE, instead
+% of just \STYLE.  We do this because \STYLE needs to also set the
+% current \fam for math mode.  Our \STYLE (e.g., \rm) commands hardwire
+% \tenSTYLE to set the current font.
+%
+% Each font-changing command also sets the names \lsize (one size lower)
+% and \lllsize (three sizes lower).  These relative commands are used in
+% the LaTeX logo and acronyms.
+%
+% This all needs generalizing, badly.
+%
+\def\textfonts{%
+  \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
+  \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
+  \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy
+  \let\tenttsl=\textttsl
+  \def\lsize{reduced}\def\lllsize{smaller}%
+  \resetmathfonts \setleading{\textleading}}
+\def\titlefonts{%
+  \let\tenrm=\titlerm \let\tenit=\titleit \let\tensl=\titlesl
+  \let\tenbf=\titlebf \let\tentt=\titlett \let\smallcaps=\titlesc
+  \let\tensf=\titlesf \let\teni=\titlei \let\tensy=\titlesy
+  \let\tenttsl=\titlettsl
+  \def\lsize{chap}\def\lllsize{subsec}%
+  \resetmathfonts \setleading{25pt}}
+\def\titlefont#1{{\titlefonts\rm #1}}
+\def\chapfonts{%
+  \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl
+  \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
+  \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy \let\tenttsl=\chapttsl
+  \def\lsize{sec}\def\lllsize{text}%
+  \resetmathfonts \setleading{19pt}}
+\def\secfonts{%
+  \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
+  \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
+  \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy
+  \let\tenttsl=\secttsl
+  \def\lsize{subsec}\def\lllsize{reduced}%
+  \resetmathfonts \setleading{16pt}}
+\def\subsecfonts{%
+  \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
+  \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
+  \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy
+  \let\tenttsl=\ssecttsl
+  \def\lsize{text}\def\lllsize{small}%
+  \resetmathfonts \setleading{15pt}}
+\let\subsubsecfonts = \subsecfonts
+\def\reducedfonts{%
+  \let\tenrm=\reducedrm \let\tenit=\reducedit \let\tensl=\reducedsl
+  \let\tenbf=\reducedbf \let\tentt=\reducedtt \let\reducedcaps=\reducedsc
+  \let\tensf=\reducedsf \let\teni=\reducedi \let\tensy=\reducedsy
+  \let\tenttsl=\reducedttsl
+  \def\lsize{small}\def\lllsize{smaller}%
+  \resetmathfonts \setleading{10.5pt}}
+\def\smallfonts{%
+  \let\tenrm=\smallrm \let\tenit=\smallit \let\tensl=\smallsl
+  \let\tenbf=\smallbf \let\tentt=\smalltt \let\smallcaps=\smallsc
+  \let\tensf=\smallsf \let\teni=\smalli \let\tensy=\smallsy
+  \let\tenttsl=\smallttsl
+  \def\lsize{smaller}\def\lllsize{smaller}%
+  \resetmathfonts \setleading{10.5pt}}
+\def\smallerfonts{%
+  \let\tenrm=\smallerrm \let\tenit=\smallerit \let\tensl=\smallersl
+  \let\tenbf=\smallerbf \let\tentt=\smallertt \let\smallcaps=\smallersc
+  \let\tensf=\smallersf \let\teni=\smalleri \let\tensy=\smallersy
+  \let\tenttsl=\smallerttsl
+  \def\lsize{smaller}\def\lllsize{smaller}%
+  \resetmathfonts \setleading{9.5pt}}
+
+% Set the fonts to use with the @small... environments.
+\let\smallexamplefonts = \smallfonts
+
+% About \smallexamplefonts.  If we use \smallfonts (9pt), @smallexample
+% can fit this many characters:
+%   8.5x11=86   smallbook=72  a4=90  a5=69
+% If we use \scriptfonts (8pt), then we can fit this many characters:
+%   8.5x11=90+  smallbook=80  a4=90+  a5=77
+% For me, subjectively, the few extra characters that fit aren't worth
+% the additional smallness of 8pt.  So I'm making the default 9pt.
+%
+% By the way, for comparison, here's what fits with @example (10pt):
+%   8.5x11=71  smallbook=60  a4=75  a5=58
+%
+% I wish the USA used A4 paper.
+% --karl, 24jan03.
+
+
+% Set up the default fonts, so we can use them for creating boxes.
+%
+\textfonts \rm
+
+% Define these so they can be easily changed for other fonts.
+\def\angleleft{$\langle$}
+\def\angleright{$\rangle$}
+
+% Count depth in font-changes, for error checks
+\newcount\fontdepth \fontdepth=0
+
+% Fonts for short table of contents.
+\setfont\shortcontrm\rmshape{12}{1000}
+\setfont\shortcontbf\bfshape{10}{\magstep1}  % no cmb12
+\setfont\shortcontsl\slshape{12}{1000}
+\setfont\shortconttt\ttshape{12}{1000}
+
+%% Add scribe-like font environments, plus @l for inline lisp (usually sans
+%% serif) and @ii for TeX italic
+
+% \smartitalic{ARG} outputs arg in italics, followed by an italic correction
+% unless the following character is such as not to need one.
+\def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else
+                    \ptexslash\fi\fi\fi}
+\def\smartslanted#1{{\ifusingtt\ttsl\sl #1}\futurelet\next\smartitalicx}
+\def\smartitalic#1{{\ifusingtt\ttsl\it #1}\futurelet\next\smartitalicx}
+
+% like \smartslanted except unconditionally uses \ttsl.
+% @var is set to this for defun arguments.
+\def\ttslanted#1{{\ttsl #1}\futurelet\next\smartitalicx}
+
+% like \smartslanted except unconditionally use \sl.  We never want
+% ttsl for book titles, do we?
+\def\cite#1{{\sl #1}\futurelet\next\smartitalicx}
+
+\let\i=\smartitalic
+\let\slanted=\smartslanted
+\let\var=\smartslanted
+\let\dfn=\smartslanted
+\let\emph=\smartitalic
+
+\def\b#1{{\bf #1}}
+\let\strong=\b
+
+% We can't just use \exhyphenpenalty, because that only has effect at
+% the end of a paragraph.  Restore normal hyphenation at the end of the
+% group within which \nohyphenation is presumably called.
+%
+\def\nohyphenation{\hyphenchar\font = -1  \aftergroup\restorehyphenation}
+\def\restorehyphenation{\hyphenchar\font = `- }
+
+% Set sfcode to normal for the chars that usually have another value.
+% Can't use plain's \frenchspacing because it uses the `\x notation, and
+% sometimes \x has an active definition that messes things up.
+%
+\catcode`@=11
+  \def\frenchspacing{%
+    \sfcode\dotChar  =\@m \sfcode\questChar=\@m \sfcode\exclamChar=\@m
+    \sfcode\colonChar=\@m \sfcode\semiChar =\@m \sfcode\commaChar =\@m
+  }
+\catcode`@=\other
+
+\def\t#1{%
+  {\tt \rawbackslash \frenchspacing #1}%
+  \null
+}
+\def\samp#1{`\tclose{#1}'\null}
+\setfont\keyrm\rmshape{8}{1000}
+\font\keysy=cmsy9
+\def\key#1{{\keyrm\textfont2=\keysy \leavevmode\hbox{%
+  \raise0.4pt\hbox{\angleleft}\kern-.08em\vtop{%
+    \vbox{\hrule\kern-0.4pt
+     \hbox{\raise0.4pt\hbox{\vphantom{\angleleft}}#1}}%
+    \kern-0.4pt\hrule}%
+  \kern-.06em\raise0.4pt\hbox{\angleright}}}}
+% The old definition, with no lozenge:
+%\def\key #1{{\ttsl \nohyphenation \uppercase{#1}}\null}
+\def\ctrl #1{{\tt \rawbackslash \hat}#1}
+
+% @file, @option are the same as @samp.
+\let\file=\samp
+\let\option=\samp
+
+% @code is a modification of @t,
+% which makes spaces the same size as normal in the surrounding text.
+\def\tclose#1{%
+  {%
+    % Change normal interword space to be same as for the current font.
+    \spaceskip = \fontdimen2\font
+    %
+    % Switch to typewriter.
+    \tt
+    %
+    % But `\ ' produces the large typewriter interword space.
+    \def\ {{\spaceskip = 0pt{} }}%
+    %
+    % Turn off hyphenation.
+    \nohyphenation
+    %
+    \rawbackslash
+    \frenchspacing
+    #1%
+  }%
+  \null
+}
+
+% We *must* turn on hyphenation at `-' and `_' in @code.
+% Otherwise, it is too hard to avoid overfull hboxes
+% in the Emacs manual, the Library manual, etc.
+
+% Unfortunately, TeX uses one parameter (\hyphenchar) to control
+% both hyphenation at - and hyphenation within words.
+% We must therefore turn them both off (\tclose does that)
+% and arrange explicitly to hyphenate at a dash.
+%  -- rms.
+{
+  \catcode`\-=\active
+  \catcode`\_=\active
+  %
+  \global\def\code{\begingroup
+    \catcode`\-=\active \let-\codedash
+    \catcode`\_=\active \let_\codeunder
+    \codex
+  }
+}
+
+\def\realdash{-}
+\def\codedash{-\discretionary{}{}{}}
+\def\codeunder{%
+  % this is all so @math{@code{var_name}+1} can work.  In math mode, _
+  % is "active" (mathcode"8000) and \normalunderscore (or \char95, etc.)
+  % will therefore expand the active definition of _, which is us
+  % (inside @code that is), therefore an endless loop.
+  \ifusingtt{\ifmmode
+               \mathchar"075F % class 0=ordinary, family 7=ttfam, pos 0x5F=_.
+             \else\normalunderscore \fi
+             \discretionary{}{}{}}%
+            {\_}%
+}
+\def\codex #1{\tclose{#1}\endgroup}
+
+% @kbd is like @code, except that if the argument is just one @key command,
+% then @kbd has no effect.
+
+% @kbdinputstyle -- arg is `distinct' (@kbd uses slanted tty font always),
+%   `example' (@kbd uses ttsl only inside of @example and friends),
+%   or `code' (@kbd uses normal tty font always).
+\parseargdef\kbdinputstyle{%
+  \def\arg{#1}%
+  \ifx\arg\worddistinct
+    \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}%
+  \else\ifx\arg\wordexample
+    \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\tt}%
+  \else\ifx\arg\wordcode
+    \gdef\kbdexamplefont{\tt}\gdef\kbdfont{\tt}%
+  \else
+    \errhelp = \EMsimple
+    \errmessage{Unknown @kbdinputstyle option `\arg'}%
+  \fi\fi\fi
+}
+\def\worddistinct{distinct}
+\def\wordexample{example}
+\def\wordcode{code}
+
+% Default is `distinct.'
+\kbdinputstyle distinct
+
+\def\xkey{\key}
+\def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}%
+\ifx\one\xkey\ifx\threex\three \key{#2}%
+\else{\tclose{\kbdfont\look}}\fi
+\else{\tclose{\kbdfont\look}}\fi}
+
+% For @indicateurl, @env, @command quotes seem unnecessary, so use \code.
+\let\indicateurl=\code
+\let\env=\code
+\let\command=\code
+
+% @uref (abbreviation for `urlref') takes an optional (comma-separated)
+% second argument specifying the text to display and an optional third
+% arg as text to display instead of (rather than in addition to) the url
+% itself.  First (mandatory) arg is the url.  Perhaps eventually put in
+% a hypertex \special here.
+%
+\def\uref#1{\douref #1,,,\finish}
+\def\douref#1,#2,#3,#4\finish{\begingroup
+  \unsepspaces
+  \pdfurl{#1}%
+  \setbox0 = \hbox{\ignorespaces #3}%
+  \ifdim\wd0 > 0pt
+    \unhbox0 % third arg given, show only that
+  \else
+    \setbox0 = \hbox{\ignorespaces #2}%
+    \ifdim\wd0 > 0pt
+      \ifpdf
+        \unhbox0             % PDF: 2nd arg given, show only it
+      \else
+        \unhbox0\ (\code{#1})% DVI: 2nd arg given, show both it and url
+      \fi
+    \else
+      \code{#1}% only url given, so show it
+    \fi
+  \fi
+  \endlink
+\endgroup}
+
+% @url synonym for @uref, since that's how everyone uses it.
+%
+\let\url=\uref
+
+% rms does not like angle brackets --karl, 17may97.
+% So now @email is just like @uref, unless we are pdf.
+%
+%\def\email#1{\angleleft{\tt #1}\angleright}
+\ifpdf
+  \def\email#1{\doemail#1,,\finish}
+  \def\doemail#1,#2,#3\finish{\begingroup
+    \unsepspaces
+    \pdfurl{mailto:#1}%
+    \setbox0 = \hbox{\ignorespaces #2}%
+    \ifdim\wd0>0pt\unhbox0\else\code{#1}\fi
+    \endlink
+  \endgroup}
+\else
+  \let\email=\uref
+\fi
+
+% Check if we are currently using a typewriter font.  Since all the
+% Computer Modern typewriter fonts have zero interword stretch (and
+% shrink), and it is reasonable to expect all typewriter fonts to have
+% this property, we can check that font parameter.
+%
+\def\ifmonospace{\ifdim\fontdimen3\font=0pt }
+
+% Typeset a dimension, e.g., `in' or `pt'.  The only reason for the
+% argument is to make the input look right: @dmn{pt} instead of @dmn{}pt.
+%
+\def\dmn#1{\thinspace #1}
+
+\def\kbd#1{\def\look{#1}\expandafter\kbdfoo\look??\par}
+
+% @l was never documented to mean ``switch to the Lisp font'',
+% and it is not used as such in any manual I can find.  We need it for
+% Polish suppressed-l.  --karl, 22sep96.
+%\def\l#1{{\li #1}\null}
+
+% Explicit font changes: @r, @sc, undocumented @ii.
+\def\r#1{{\rm #1}}              % roman font
+\def\sc#1{{\smallcaps#1}}       % smallcaps font
+\def\ii#1{{\it #1}}             % italic font
+
+% @acronym for "FBI", "NATO", and the like.
+% We print this one point size smaller, since it's intended for
+% all-uppercase.
+% 
+\def\acronym#1{\doacronym #1,,\finish}
+\def\doacronym#1,#2,#3\finish{%
+  {\selectfonts\lsize #1}%
+  \def\temp{#2}%
+  \ifx\temp\empty \else
+    \space ({\unsepspaces \ignorespaces \temp \unskip})%
+  \fi
+}
+
+% @abbr for "Comput. J." and the like.
+% No font change, but don't do end-of-sentence spacing.
+% 
+\def\abbr#1{\doabbr #1,,\finish}
+\def\doabbr#1,#2,#3\finish{%
+  {\frenchspacing #1}%
+  \def\temp{#2}%
+  \ifx\temp\empty \else
+    \space ({\unsepspaces \ignorespaces \temp \unskip})%
+  \fi
+}
+
+% @pounds{} is a sterling sign, which Knuth put in the CM italic font.
+%
+\def\pounds{{\it\$}}
+
+% @registeredsymbol - R in a circle.  The font for the R should really
+% be smaller yet, but lllsize is the best we can do for now.
+% Adapted from the plain.tex definition of \copyright.
+%
+\def\registeredsymbol{%
+  $^{{\ooalign{\hfil\raise.07ex\hbox{\selectfonts\lllsize R}%
+               \hfil\crcr\Orb}}%
+    }$%
+}
+
+% Laurent Siebenmann reports \Orb undefined with:
+%  Textures 1.7.7 (preloaded format=plain 93.10.14)  (68K)  16 APR 2004 02:38
+% so we'll define it if necessary.
+% 
+\ifx\Orb\undefined
+\def\Orb{\mathhexbox20D}
+\fi
+
+
+\message{page headings,}
+
+\newskip\titlepagetopglue \titlepagetopglue = 1.5in
+\newskip\titlepagebottomglue \titlepagebottomglue = 2pc
+
+% First the title page.  Must do @settitle before @titlepage.
+\newif\ifseenauthor
+\newif\iffinishedtitlepage
+
+% Do an implicit @contents or @shortcontents after @end titlepage if the
+% user says @setcontentsaftertitlepage or @setshortcontentsaftertitlepage.
+%
+\newif\ifsetcontentsaftertitlepage
+ \let\setcontentsaftertitlepage = \setcontentsaftertitlepagetrue
+\newif\ifsetshortcontentsaftertitlepage
+ \let\setshortcontentsaftertitlepage = \setshortcontentsaftertitlepagetrue
+
+\parseargdef\shorttitlepage{\begingroup\hbox{}\vskip 1.5in \chaprm \centerline{#1}%
+        \endgroup\page\hbox{}\page}
+
+\envdef\titlepage{%
+  % Open one extra group, as we want to close it in the middle of \Etitlepage.
+  \begingroup
+    \parindent=0pt \textfonts
+    % Leave some space at the very top of the page.
+    \vglue\titlepagetopglue
+    % No rule at page bottom unless we print one at the top with @title.
+    \finishedtitlepagetrue
+    %
+    % Most title ``pages'' are actually two pages long, with space
+    % at the top of the second.  We don't want the ragged left on the second.
+    \let\oldpage = \page
+    \def\page{%
+      \iffinishedtitlepage\else
+	 \finishtitlepage
+      \fi
+      \let\page = \oldpage
+      \page
+      \null
+    }%
+}
+
+\def\Etitlepage{%
+    \iffinishedtitlepage\else
+	\finishtitlepage
+    \fi
+    % It is important to do the page break before ending the group,
+    % because the headline and footline are only empty inside the group.
+    % If we use the new definition of \page, we always get a blank page
+    % after the title page, which we certainly don't want.
+    \oldpage
+  \endgroup
+  %
+  % Need this before the \...aftertitlepage checks so that if they are
+  % in effect the toc pages will come out with page numbers.
+  \HEADINGSon
+  %
+  % If they want short, they certainly want long too.
+  \ifsetshortcontentsaftertitlepage
+    \shortcontents
+    \contents
+    \global\let\shortcontents = \relax
+    \global\let\contents = \relax
+  \fi
+  %
+  \ifsetcontentsaftertitlepage
+    \contents
+    \global\let\contents = \relax
+    \global\let\shortcontents = \relax
+  \fi
+}
+
+\def\finishtitlepage{%
+  \vskip4pt \hrule height 2pt width \hsize
+  \vskip\titlepagebottomglue
+  \finishedtitlepagetrue
+}
+
+%%% Macros to be used within @titlepage:
+
+\let\subtitlerm=\tenrm
+\def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}
+
+\def\authorfont{\authorrm \normalbaselineskip = 16pt \normalbaselines
+		\let\tt=\authortt}
+
+\parseargdef\title{%
+  \checkenv\titlepage
+  \leftline{\titlefonts\rm #1}
+  % print a rule at the page bottom also.
+  \finishedtitlepagefalse
+  \vskip4pt \hrule height 4pt width \hsize \vskip4pt
+}
+
+\parseargdef\subtitle{%
+  \checkenv\titlepage
+  {\subtitlefont \rightline{#1}}%
+}
+
+% @author should come last, but may come many times.
+% It can also be used inside @quotation.
+%
+\parseargdef\author{%
+  \def\temp{\quotation}%
+  \ifx\thisenv\temp
+    \def\quotationauthor{#1}% printed in \Equotation.
+  \else
+    \checkenv\titlepage
+    \ifseenauthor\else \vskip 0pt plus 1filll \seenauthortrue \fi
+    {\authorfont \leftline{#1}}%
+  \fi
+}
+
+
+%%% Set up page headings and footings.
+
+\let\thispage=\folio
+
+\newtoks\evenheadline    % headline on even pages
+\newtoks\oddheadline     % headline on odd pages
+\newtoks\evenfootline    % footline on even pages
+\newtoks\oddfootline     % footline on odd pages
+
+% Now make TeX use those variables
+\headline={{\textfonts\rm \ifodd\pageno \the\oddheadline
+                            \else \the\evenheadline \fi}}
+\footline={{\textfonts\rm \ifodd\pageno \the\oddfootline
+                            \else \the\evenfootline \fi}\HEADINGShook}
+\let\HEADINGShook=\relax
+
+% Commands to set those variables.
+% For example, this is what  @headings on  does
+% @evenheading @thistitle|@thispage|@thischapter
+% @oddheading @thischapter|@thispage|@thistitle
+% @evenfooting @thisfile||
+% @oddfooting ||@thisfile
+
+
+\def\evenheading{\parsearg\evenheadingxxx}
+\def\evenheadingxxx #1{\evenheadingyyy #1\|\|\|\|\finish}
+\def\evenheadingyyy #1\|#2\|#3\|#4\finish{%
+\global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
+
+\def\oddheading{\parsearg\oddheadingxxx}
+\def\oddheadingxxx #1{\oddheadingyyy #1\|\|\|\|\finish}
+\def\oddheadingyyy #1\|#2\|#3\|#4\finish{%
+\global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
+
+\parseargdef\everyheading{\oddheadingxxx{#1}\evenheadingxxx{#1}}%
+
+\def\evenfooting{\parsearg\evenfootingxxx}
+\def\evenfootingxxx #1{\evenfootingyyy #1\|\|\|\|\finish}
+\def\evenfootingyyy #1\|#2\|#3\|#4\finish{%
+\global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
+
+\def\oddfooting{\parsearg\oddfootingxxx}
+\def\oddfootingxxx #1{\oddfootingyyy #1\|\|\|\|\finish}
+\def\oddfootingyyy #1\|#2\|#3\|#4\finish{%
+  \global\oddfootline = {\rlap{\centerline{#2}}\line{#1\hfil#3}}%
+  %
+  % Leave some space for the footline.  Hopefully ok to assume
+  % @evenfooting will not be used by itself.
+  \global\advance\pageheight by -\baselineskip
+  \global\advance\vsize by -\baselineskip
+}
+
+\parseargdef\everyfooting{\oddfootingxxx{#1}\evenfootingxxx{#1}}
+
+
+% @headings double      turns headings on for double-sided printing.
+% @headings single      turns headings on for single-sided printing.
+% @headings off         turns them off.
+% @headings on          same as @headings double, retained for compatibility.
+% @headings after       turns on double-sided headings after this page.
+% @headings doubleafter turns on double-sided headings after this page.
+% @headings singleafter turns on single-sided headings after this page.
+% By default, they are off at the start of a document,
+% and turned `on' after @end titlepage.
+
+\def\headings #1 {\csname HEADINGS#1\endcsname}
+
+\def\HEADINGSoff{%
+\global\evenheadline={\hfil} \global\evenfootline={\hfil}
+\global\oddheadline={\hfil} \global\oddfootline={\hfil}}
+\HEADINGSoff
+% When we turn headings on, set the page number to 1.
+% For double-sided printing, put current file name in lower left corner,
+% chapter name on inside top of right hand pages, document
+% title on inside top of left hand pages, and page numbers on outside top
+% edge of all pages.
+\def\HEADINGSdouble{%
+\global\pageno=1
+\global\evenfootline={\hfil}
+\global\oddfootline={\hfil}
+\global\evenheadline={\line{\folio\hfil\thistitle}}
+\global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\let\contentsalignmacro = \chapoddpage
+}
+\let\contentsalignmacro = \chappager
+
+% For single-sided printing, chapter title goes across top left of page,
+% page number on top right.
+\def\HEADINGSsingle{%
+\global\pageno=1
+\global\evenfootline={\hfil}
+\global\oddfootline={\hfil}
+\global\evenheadline={\line{\thischapter\hfil\folio}}
+\global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\let\contentsalignmacro = \chappager
+}
+\def\HEADINGSon{\HEADINGSdouble}
+
+\def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
+\let\HEADINGSdoubleafter=\HEADINGSafter
+\def\HEADINGSdoublex{%
+\global\evenfootline={\hfil}
+\global\oddfootline={\hfil}
+\global\evenheadline={\line{\folio\hfil\thistitle}}
+\global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\let\contentsalignmacro = \chapoddpage
+}
+
+\def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
+\def\HEADINGSsinglex{%
+\global\evenfootline={\hfil}
+\global\oddfootline={\hfil}
+\global\evenheadline={\line{\thischapter\hfil\folio}}
+\global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\let\contentsalignmacro = \chappager
+}
+
+% Subroutines used in generating headings
+% This produces Day Month Year style of output.
+% Only define if not already defined, in case a txi-??.tex file has set
+% up a different format (e.g., txi-cs.tex does this).
+\ifx\today\undefined
+\def\today{%
+  \number\day\space
+  \ifcase\month
+  \or\putwordMJan\or\putwordMFeb\or\putwordMMar\or\putwordMApr
+  \or\putwordMMay\or\putwordMJun\or\putwordMJul\or\putwordMAug
+  \or\putwordMSep\or\putwordMOct\or\putwordMNov\or\putwordMDec
+  \fi
+  \space\number\year}
+\fi
+
+% @settitle line...  specifies the title of the document, for headings.
+% It generates no output of its own.
+\def\thistitle{\putwordNoTitle}
+\def\settitle{\parsearg{\gdef\thistitle}}
+
+
+\message{tables,}
+% Tables -- @table, @ftable, @vtable, @item(x).
+
+% default indentation of table text
+\newdimen\tableindent \tableindent=.8in
+% default indentation of @itemize and @enumerate text
+\newdimen\itemindent  \itemindent=.3in
+% margin between end of table item and start of table text.
+\newdimen\itemmargin  \itemmargin=.1in
+
+% used internally for \itemindent minus \itemmargin
+\newdimen\itemmax
+
+% Note @table, @ftable, and @vtable define @item, @itemx, etc., with
+% these defs.
+% They also define \itemindex
+% to index the item name in whatever manner is desired (perhaps none).
+
+\newif\ifitemxneedsnegativevskip
+
+\def\itemxpar{\par\ifitemxneedsnegativevskip\nobreak\vskip-\parskip\nobreak\fi}
+
+\def\internalBitem{\smallbreak \parsearg\itemzzz}
+\def\internalBitemx{\itemxpar \parsearg\itemzzz}
+
+\def\itemzzz #1{\begingroup %
+  \advance\hsize by -\rightskip
+  \advance\hsize by -\tableindent
+  \setbox0=\hbox{\itemindicate{#1}}%
+  \itemindex{#1}%
+  \nobreak % This prevents a break before @itemx.
+  %
+  % If the item text does not fit in the space we have, put it on a line
+  % by itself, and do not allow a page break either before or after that
+  % line.  We do not start a paragraph here because then if the next
+  % command is, e.g., @kindex, the whatsit would get put into the
+  % horizontal list on a line by itself, resulting in extra blank space.
+  \ifdim \wd0>\itemmax
+    %
+    % Make this a paragraph so we get the \parskip glue and wrapping,
+    % but leave it ragged-right.
+    \begingroup
+      \advance\leftskip by-\tableindent
+      \advance\hsize by\tableindent
+      \advance\rightskip by0pt plus1fil
+      \leavevmode\unhbox0\par
+    \endgroup
+    %
+    % We're going to be starting a paragraph, but we don't want the
+    % \parskip glue -- logically it's part of the @item we just started.
+    \nobreak \vskip-\parskip
+    %
+    % Stop a page break at the \parskip glue coming up.  However, if
+    % what follows is an environment such as @example, there will be no
+    % \parskip glue; then the negative vskip we just inserted would
+    % cause the example and the item to crash together.  So we use this
+    % bizarre value of 10001 as a signal to \aboveenvbreak to insert
+    % \parskip glue after all.  Section titles are handled this way also.
+    % 
+    \penalty 10001
+    \endgroup
+    \itemxneedsnegativevskipfalse
+  \else
+    % The item text fits into the space.  Start a paragraph, so that the
+    % following text (if any) will end up on the same line.
+    \noindent
+    % Do this with kerns and \unhbox so that if there is a footnote in
+    % the item text, it can migrate to the main vertical list and
+    % eventually be printed.
+    \nobreak\kern-\tableindent
+    \dimen0 = \itemmax  \advance\dimen0 by \itemmargin \advance\dimen0 by -\wd0
+    \unhbox0
+    \nobreak\kern\dimen0
+    \endgroup
+    \itemxneedsnegativevskiptrue
+  \fi
+}
+
+\def\item{\errmessage{@item while not in a list environment}}
+\def\itemx{\errmessage{@itemx while not in a list environment}}
+
+% @table, @ftable, @vtable.
+\envdef\table{%
+  \let\itemindex\gobble
+  \tablex
+}
+\envdef\ftable{%
+  \def\itemindex ##1{\doind {fn}{\code{##1}}}%
+  \tablex
+}
+\envdef\vtable{%
+  \def\itemindex ##1{\doind {vr}{\code{##1}}}%
+  \tablex
+}
+\def\tablex#1{%
+  \def\itemindicate{#1}%
+  \parsearg\tabley
+}
+\def\tabley#1{%
+  {%
+    \makevalueexpandable
+    \edef\temp{\noexpand\tablez #1\space\space\space}%
+    \expandafter
+  }\temp \endtablez
+}
+\def\tablez #1 #2 #3 #4\endtablez{%
+  \aboveenvbreak
+  \ifnum 0#1>0 \advance \leftskip by #1\mil \fi
+  \ifnum 0#2>0 \tableindent=#2\mil \fi
+  \ifnum 0#3>0 \advance \rightskip by #3\mil \fi
+  \itemmax=\tableindent
+  \advance \itemmax by -\itemmargin
+  \advance \leftskip by \tableindent
+  \exdentamount=\tableindent
+  \parindent = 0pt
+  \parskip = \smallskipamount
+  \ifdim \parskip=0pt \parskip=2pt \fi
+  \let\item = \internalBitem
+  \let\itemx = \internalBitemx
+}
+\def\Etable{\endgraf\afterenvbreak}
+\let\Eftable\Etable
+\let\Evtable\Etable
+\let\Eitemize\Etable
+\let\Eenumerate\Etable
+
+% This is the counter used by @enumerate, which is really @itemize
+
+\newcount \itemno
+
+\envdef\itemize{\parsearg\doitemize}
+
+\def\doitemize#1{%
+  \aboveenvbreak
+  \itemmax=\itemindent
+  \advance\itemmax by -\itemmargin
+  \advance\leftskip by \itemindent
+  \exdentamount=\itemindent
+  \parindent=0pt
+  \parskip=\smallskipamount
+  \ifdim\parskip=0pt \parskip=2pt \fi
+  \def\itemcontents{#1}%
+  % @itemize with no arg is equivalent to @itemize @bullet.
+  \ifx\itemcontents\empty\def\itemcontents{\bullet}\fi
+  \let\item=\itemizeitem
+}
+
+% Definition of @item while inside @itemize and @enumerate.
+%
+\def\itemizeitem{%
+  \advance\itemno by 1  % for enumerations
+  {\let\par=\endgraf \smallbreak}% reasonable place to break
+  {%
+   % If the document has an @itemize directly after a section title, a
+   % \nobreak will be last on the list, and \sectionheading will have
+   % done a \vskip-\parskip.  In that case, we don't want to zero
+   % parskip, or the item text will crash with the heading.  On the
+   % other hand, when there is normal text preceding the item (as there
+   % usually is), we do want to zero parskip, or there would be too much
+   % space.  In that case, we won't have a \nobreak before.  At least
+   % that's the theory.
+   \ifnum\lastpenalty<10000 \parskip=0in \fi
+   \noindent
+   \hbox to 0pt{\hss \itemcontents \kern\itemmargin}%
+   \vadjust{\penalty 1200}}% not good to break after first line of item.
+  \flushcr
+}
+
+% \splitoff TOKENS\endmark defines \first to be the first token in
+% TOKENS, and \rest to be the remainder.
+%
+\def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
+
+% Allow an optional argument of an uppercase letter, lowercase letter,
+% or number, to specify the first label in the enumerated list.  No
+% argument is the same as `1'.
+%
+\envparseargdef\enumerate{\enumeratey #1  \endenumeratey}
+\def\enumeratey #1 #2\endenumeratey{%
+  % If we were given no argument, pretend we were given `1'.
+  \def\thearg{#1}%
+  \ifx\thearg\empty \def\thearg{1}\fi
+  %
+  % Detect if the argument is a single token.  If so, it might be a
+  % letter.  Otherwise, the only valid thing it can be is a number.
+  % (We will always have one token, because of the test we just made.
+  % This is a good thing, since \splitoff doesn't work given nothing at
+  % all -- the first parameter is undelimited.)
+  \expandafter\splitoff\thearg\endmark
+  \ifx\rest\empty
+    % Only one token in the argument.  It could still be anything.
+    % A ``lowercase letter'' is one whose \lccode is nonzero.
+    % An ``uppercase letter'' is one whose \lccode is both nonzero, and
+    %   not equal to itself.
+    % Otherwise, we assume it's a number.
+    %
+    % We need the \relax at the end of the \ifnum lines to stop TeX from
+    % continuing to look for a <number>.
+    %
+    \ifnum\lccode\expandafter`\thearg=0\relax
+      \numericenumerate % a number (we hope)
+    \else
+      % It's a letter.
+      \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
+        \lowercaseenumerate % lowercase letter
+      \else
+        \uppercaseenumerate % uppercase letter
+      \fi
+    \fi
+  \else
+    % Multiple tokens in the argument.  We hope it's a number.
+    \numericenumerate
+  \fi
+}
+
+% An @enumerate whose labels are integers.  The starting integer is
+% given in \thearg.
+%
+\def\numericenumerate{%
+  \itemno = \thearg
+  \startenumeration{\the\itemno}%
+}
+
+% The starting (lowercase) letter is in \thearg.
+\def\lowercaseenumerate{%
+  \itemno = \expandafter`\thearg
+  \startenumeration{%
+    % Be sure we're not beyond the end of the alphabet.
+    \ifnum\itemno=0
+      \errmessage{No more lowercase letters in @enumerate; get a bigger
+                  alphabet}%
+    \fi
+    \char\lccode\itemno
+  }%
+}
+
+% The starting (uppercase) letter is in \thearg.
+\def\uppercaseenumerate{%
+  \itemno = \expandafter`\thearg
+  \startenumeration{%
+    % Be sure we're not beyond the end of the alphabet.
+    \ifnum\itemno=0
+      \errmessage{No more uppercase letters in @enumerate; get a bigger
+                  alphabet}
+    \fi
+    \char\uccode\itemno
+  }%
+}
+
+% Call \doitemize, adding a period to the first argument and supplying the
+% common last two arguments.  Also subtract one from the initial value in
+% \itemno, since @item increments \itemno.
+%
+\def\startenumeration#1{%
+  \advance\itemno by -1
+  \doitemize{#1.}\flushcr
+}
+
+% @alphaenumerate and @capsenumerate are abbreviations for giving an arg
+% to @enumerate.
+%
+\def\alphaenumerate{\enumerate{a}}
+\def\capsenumerate{\enumerate{A}}
+\def\Ealphaenumerate{\Eenumerate}
+\def\Ecapsenumerate{\Eenumerate}
+
+
+% @multitable macros
+% Amy Hendrickson, 8/18/94, 3/6/96
+%
+% @multitable ... @end multitable will make as many columns as desired.
+% Contents of each column will wrap at width given in preamble.  Width
+% can be specified either with sample text given in a template line,
+% or in percent of \hsize, the current width of text on page.
+
+% Table can continue over pages but will only break between lines.
+
+% To make preamble:
+%
+% Either define widths of columns in terms of percent of \hsize:
+%   @multitable @columnfractions .25 .3 .45
+%   @item ...
+%
+%   Numbers following @columnfractions are the percent of the total
+%   current hsize to be used for each column. You may use as many
+%   columns as desired.
+
+
+% Or use a template:
+%   @multitable {Column 1 template} {Column 2 template} {Column 3 template}
+%   @item ...
+%   using the widest term desired in each column.
+
+% Each new table line starts with @item, each subsequent new column
+% starts with @tab. Empty columns may be produced by supplying @tab's
+% with nothing between them for as many times as empty columns are needed,
+% ie, @tab@tab@tab will produce two empty columns.
+
+% @item, @tab do not need to be on their own lines, but it will not hurt
+% if they are.
+
+% Sample multitable:
+
+%   @multitable {Column 1 template} {Column 2 template} {Column 3 template}
+%   @item first col stuff @tab second col stuff @tab third col
+%   @item
+%   first col stuff
+%   @tab
+%   second col stuff
+%   @tab
+%   third col
+%   @item first col stuff @tab second col stuff
+%   @tab Many paragraphs of text may be used in any column.
+%
+%         They will wrap at the width determined by the template.
+%   @item@tab@tab This will be in third column.
+%   @end multitable
+
+% Default dimensions may be reset by user.
+% @multitableparskip is vertical space between paragraphs in table.
+% @multitableparindent is paragraph indent in table.
+% @multitablecolmargin is horizontal space to be left between columns.
+% @multitablelinespace is space to leave between table items, baseline
+%                                                            to baseline.
+%   0pt means it depends on current normal line spacing.
+%
+\newskip\multitableparskip
+\newskip\multitableparindent
+\newdimen\multitablecolspace
+\newskip\multitablelinespace
+\multitableparskip=0pt
+\multitableparindent=6pt
+\multitablecolspace=12pt
+\multitablelinespace=0pt
+
+% Macros used to set up halign preamble:
+%
+\let\endsetuptable\relax
+\def\xendsetuptable{\endsetuptable}
+\let\columnfractions\relax
+\def\xcolumnfractions{\columnfractions}
+\newif\ifsetpercent
+
+% #1 is the @columnfraction, usually a decimal number like .5, but might
+% be just 1.  We just use it, whatever it is.
+%
+\def\pickupwholefraction#1 {%
+  \global\advance\colcount by 1
+  \expandafter\xdef\csname col\the\colcount\endcsname{#1\hsize}%
+  \setuptable
+}
+
+\newcount\colcount
+\def\setuptable#1{%
+  \def\firstarg{#1}%
+  \ifx\firstarg\xendsetuptable
+    \let\go = \relax
+  \else
+    \ifx\firstarg\xcolumnfractions
+      \global\setpercenttrue
+    \else
+      \ifsetpercent
+         \let\go\pickupwholefraction
+      \else
+         \global\advance\colcount by 1
+         \setbox0=\hbox{#1\unskip\space}% Add a normal word space as a
+                   % separator; typically that is always in the input, anyway.
+         \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}%
+      \fi
+    \fi
+    \ifx\go\pickupwholefraction
+      % Put the argument back for the \pickupwholefraction call, so
+      % we'll always have a period there to be parsed.
+      \def\go{\pickupwholefraction#1}%
+    \else
+      \let\go = \setuptable
+    \fi%
+  \fi
+  \go
+}
+
+% multitable-only commands.
+%
+% @headitem starts a heading row, which we typeset in bold.
+% Assignments have to be global since we are inside the implicit group
+% of an alignment entry.  Note that \everycr resets \everytab.
+\def\headitem{\checkenv\multitable \crcr \global\everytab={\bf}\the\everytab}%
+%
+% A \tab used to include \hskip1sp.  But then the space in a template
+% line is not enough.  That is bad.  So let's go back to just `&' until
+% we encounter the problem it was intended to solve again.
+%					--karl, nathan@acm.org, 20apr99.
+\def\tab{\checkenv\multitable &\the\everytab}%
+
+% @multitable ... @end multitable definitions:
+%
+\newtoks\everytab  % insert after every tab.
+%
+\envdef\multitable{%
+  \vskip\parskip
+  \startsavinginserts
+  %
+  % @item within a multitable starts a normal row.
+  \let\item\crcr
+  %
+  \tolerance=9500
+  \hbadness=9500
+  \setmultitablespacing
+  \parskip=\multitableparskip
+  \parindent=\multitableparindent
+  \overfullrule=0pt
+  \global\colcount=0
+  %
+  \everycr = {%
+    \noalign{%
+      \global\everytab={}%
+      \global\colcount=0 % Reset the column counter.
+      % Check for saved footnotes, etc.
+      \checkinserts
+      % Keeps underfull box messages off when table breaks over pages.
+      %\filbreak
+	% Maybe so, but it also creates really weird page breaks when the
+	% table breaks over pages. Wouldn't \vfil be better?  Wait until the
+	% problem manifests itself, so it can be fixed for real --karl.
+    }%
+  }%
+  %
+  \parsearg\domultitable
+}
+\def\domultitable#1{%
+  % To parse everything between @multitable and @item:
+  \setuptable#1 \endsetuptable
+  %
+  % This preamble sets up a generic column definition, which will
+  % be used as many times as user calls for columns.
+  % \vtop will set a single line and will also let text wrap and
+  % continue for many paragraphs if desired.
+  \halign\bgroup &%
+    \global\advance\colcount by 1
+    \multistrut
+    \vtop{%
+      % Use the current \colcount to find the correct column width:
+      \hsize=\expandafter\csname col\the\colcount\endcsname
+      %
+      % In order to keep entries from bumping into each other
+      % we will add a \leftskip of \multitablecolspace to all columns after
+      % the first one.
+      %
+      % If a template has been used, we will add \multitablecolspace
+      % to the width of each template entry.
+      %
+      % If the user has set preamble in terms of percent of \hsize we will
+      % use that dimension as the width of the column, and the \leftskip
+      % will keep entries from bumping into each other.  Table will start at
+      % left margin and final column will justify at right margin.
+      %
+      % Make sure we don't inherit \rightskip from the outer environment.
+      \rightskip=0pt
+      \ifnum\colcount=1
+	% The first column will be indented with the surrounding text.
+	\advance\hsize by\leftskip
+      \else
+	\ifsetpercent \else
+	  % If user has not set preamble in terms of percent of \hsize
+	  % we will advance \hsize by \multitablecolspace.
+	  \advance\hsize by \multitablecolspace
+	\fi
+       % In either case we will make \leftskip=\multitablecolspace:
+      \leftskip=\multitablecolspace
+      \fi
+      % Ignoring space at the beginning and end avoids an occasional spurious
+      % blank line, when TeX decides to break the line at the space before the
+      % box from the multistrut, so the strut ends up on a line by itself.
+      % For example:
+      % @multitable @columnfractions .11 .89
+      % @item @code{#}
+      % @tab Legal holiday which is valid in major parts of the whole country.
+      % Is automatically provided with highlighting sequences respectively
+      % marking characters.
+      \noindent\ignorespaces##\unskip\multistrut
+    }\cr
+}
+\def\Emultitable{%
+  \crcr
+  \egroup % end the \halign
+  \global\setpercentfalse
+}
+
+\def\setmultitablespacing{% test to see if user has set \multitablelinespace.
+% If so, do nothing. If not, give it an appropriate dimension based on
+% current baselineskip.
+\ifdim\multitablelinespace=0pt
+\setbox0=\vbox{X}\global\multitablelinespace=\the\baselineskip
+\global\advance\multitablelinespace by-\ht0
+%% strut to put in table in case some entry doesn't have descenders,
+%% to keep lines equally spaced
+\let\multistrut = \strut
+\else
+%% FIXME: what is \box0 supposed to be?
+\gdef\multistrut{\vrule height\multitablelinespace depth\dp0
+width0pt\relax} \fi
+%% Test to see if parskip is larger than space between lines of
+%% table. If not, do nothing.
+%%        If so, set to same dimension as multitablelinespace.
+\ifdim\multitableparskip>\multitablelinespace
+\global\multitableparskip=\multitablelinespace
+\global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
+                                      %% than skip between lines in the table.
+\fi%
+\ifdim\multitableparskip=0pt
+\global\multitableparskip=\multitablelinespace
+\global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
+                                      %% than skip between lines in the table.
+\fi}
+
+
+\message{conditionals,}
+
+% @iftex, @ifnotdocbook, @ifnothtml, @ifnotinfo, @ifnotplaintext,
+% @ifnotxml always succeed.  They currently do nothing; we don't
+% attempt to check whether the conditionals are properly nested.  But we
+% have to remember that they are conditionals, so that @end doesn't
+% attempt to close an environment group.
+%
+\def\makecond#1{%
+  \expandafter\let\csname #1\endcsname = \relax
+  \expandafter\let\csname iscond.#1\endcsname = 1
+}
+\makecond{iftex}
+\makecond{ifnotdocbook}
+\makecond{ifnothtml}
+\makecond{ifnotinfo}
+\makecond{ifnotplaintext}
+\makecond{ifnotxml}
+
+% Ignore @ignore, @ifhtml, @ifinfo, and the like.
+%
+\def\direntry{\doignore{direntry}}
+\def\documentdescription{\doignore{documentdescription}}
+\def\docbook{\doignore{docbook}}
+\def\html{\doignore{html}}
+\def\ifdocbook{\doignore{ifdocbook}}
+\def\ifhtml{\doignore{ifhtml}}
+\def\ifinfo{\doignore{ifinfo}}
+\def\ifnottex{\doignore{ifnottex}}
+\def\ifplaintext{\doignore{ifplaintext}}
+\def\ifxml{\doignore{ifxml}}
+\def\ignore{\doignore{ignore}}
+\def\menu{\doignore{menu}}
+\def\xml{\doignore{xml}}
+
+% Ignore text until a line `@end #1', keeping track of nested conditionals.
+%
+% A count to remember the depth of nesting.
+\newcount\doignorecount
+
+\def\doignore#1{\begingroup
+  % Scan in ``verbatim'' mode:
+  \catcode`\@ = \other
+  \catcode`\{ = \other
+  \catcode`\} = \other
+  %
+  % Make sure that spaces turn into tokens that match what \doignoretext wants.
+  \spaceisspace
+  %
+  % Count number of #1's that we've seen.
+  \doignorecount = 0
+  %
+  % Swallow text until we reach the matching `@end #1'.
+  \dodoignore{#1}%
+}
+
+{ \catcode`_=11 % We want to use \_STOP_ which cannot appear in texinfo source.
+  \obeylines %
+  %
+  \gdef\dodoignore#1{%
+    % #1 contains the command name as a string, e.g., `ifinfo'.
+    %
+    % Define a command to find the next `@end #1', which must be on a line
+    % by itself.
+    \long\def\doignoretext##1^^M@end #1{\doignoretextyyy##1^^M@#1\_STOP_}%
+    % And this command to find another #1 command, at the beginning of a
+    % line.  (Otherwise, we would consider a line `@c @ifset', for
+    % example, to count as an @ifset for nesting.)
+    \long\def\doignoretextyyy##1^^M@#1##2\_STOP_{\doignoreyyy{##2}\_STOP_}%
+    %
+    % And now expand that command.
+    \obeylines %
+    \doignoretext ^^M%
+  }%
+}
+
+\def\doignoreyyy#1{%
+  \def\temp{#1}%
+  \ifx\temp\empty			% Nothing found.
+    \let\next\doignoretextzzz
+  \else					% Found a nested condition, ...
+    \advance\doignorecount by 1
+    \let\next\doignoretextyyy		% ..., look for another.
+    % If we're here, #1 ends with ^^M\ifinfo (for example).
+  \fi
+  \next #1% the token \_STOP_ is present just after this macro.
+}
+
+% We have to swallow the remaining "\_STOP_".
+%
+\def\doignoretextzzz#1{%
+  \ifnum\doignorecount = 0	% We have just found the outermost @end.
+    \let\next\enddoignore
+  \else				% Still inside a nested condition.
+    \advance\doignorecount by -1
+    \let\next\doignoretext      % Look for the next @end.
+  \fi
+  \next
+}
+
+% Finish off ignored text.
+\def\enddoignore{\endgroup\ignorespaces}
+
+
+% @set VAR sets the variable VAR to an empty value.
+% @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE.
+%
+% Since we want to separate VAR from REST-OF-LINE (which might be
+% empty), we can't just use \parsearg; we have to insert a space of our
+% own to delimit the rest of the line, and then take it out again if we
+% didn't need it.
+% We rely on the fact that \parsearg sets \catcode`\ =10.
+%
+\parseargdef\set{\setyyy#1 \endsetyyy}
+\def\setyyy#1 #2\endsetyyy{%
+  {%
+    \makevalueexpandable
+    \def\temp{#2}%
+    \edef\next{\gdef\makecsname{SET#1}}%
+    \ifx\temp\empty
+      \next{}%
+    \else
+      \setzzz#2\endsetzzz
+    \fi
+  }%
+}
+% Remove the trailing space \setxxx inserted.
+\def\setzzz#1 \endsetzzz{\next{#1}}
+
+% @clear VAR clears (i.e., unsets) the variable VAR.
+%
+\parseargdef\clear{%
+  {%
+    \makevalueexpandable
+    \global\expandafter\let\csname SET#1\endcsname=\relax
+  }%
+}
+
+% @value{foo} gets the text saved in variable foo.
+\def\value{\begingroup\makevalueexpandable\valuexxx}
+\def\valuexxx#1{\expandablevalue{#1}\endgroup}
+{
+  \catcode`\- = \active \catcode`\_ = \active
+  %
+  \gdef\makevalueexpandable{%
+    \let\value = \expandablevalue
+    % We don't want these characters active, ...
+    \catcode`\-=\other \catcode`\_=\other
+    % ..., but we might end up with active ones in the argument if
+    % we're called from @code, as @code{@value{foo-bar_}}, though.
+    % So \let them to their normal equivalents.
+    \let-\realdash \let_\normalunderscore
+  }
+}
+
+% We have this subroutine so that we can handle at least some @value's
+% properly in indexes (we call \makevalueexpandable in \indexdummies).
+% The command has to be fully expandable (if the variable is set), since
+% the result winds up in the index file.  This means that if the
+% variable's value contains other Texinfo commands, it's almost certain
+% it will fail (although perhaps we could fix that with sufficient work
+% to do a one-level expansion on the result, instead of complete).
+%
+\def\expandablevalue#1{%
+  \expandafter\ifx\csname SET#1\endcsname\relax
+    {[No value for ``#1'']}%
+    \message{Variable `#1', used in @value, is not set.}%
+  \else
+    \csname SET#1\endcsname
+  \fi
+}
+
+% @ifset VAR ... @end ifset reads the `...' iff VAR has been defined
+% with @set.
+%
+% To get special treatment of `@end ifset,' call \makeond and the redefine.
+%
+\makecond{ifset}
+\def\ifset{\parsearg{\doifset{\let\next=\ifsetfail}}}
+\def\doifset#1#2{%
+  {%
+    \makevalueexpandable
+    \let\next=\empty
+    \expandafter\ifx\csname SET#2\endcsname\relax
+      #1% If not set, redefine \next.
+    \fi
+    \expandafter
+  }\next
+}
+\def\ifsetfail{\doignore{ifset}}
+
+% @ifclear VAR ... @end ifclear reads the `...' iff VAR has never been
+% defined with @set, or has been undefined with @clear.
+%
+% The `\else' inside the `\doifset' parameter is a trick to reuse the
+% above code: if the variable is not set, do nothing, if it is set,
+% then redefine \next to \ifclearfail.
+%
+\makecond{ifclear}
+\def\ifclear{\parsearg{\doifset{\else \let\next=\ifclearfail}}}
+\def\ifclearfail{\doignore{ifclear}}
+
+% @dircategory CATEGORY  -- specify a category of the dir file
+% which this file should belong to.  Ignore this in TeX.
+\let\dircategory=\comment
+
+% @defininfoenclose.
+\let\definfoenclose=\comment
+
+
+\message{indexing,}
+% Index generation facilities
+
+% Define \newwrite to be identical to plain tex's \newwrite
+% except not \outer, so it can be used within \newindex.
+{\catcode`\@=11
+\gdef\newwrite{\alloc@7\write\chardef\sixt@@n}}
+
+% \newindex {foo} defines an index named foo.
+% It automatically defines \fooindex such that
+% \fooindex ...rest of line... puts an entry in the index foo.
+% It also defines \fooindfile to be the number of the output channel for
+% the file that accumulates this index.  The file's extension is foo.
+% The name of an index should be no more than 2 characters long
+% for the sake of vms.
+%
+\def\newindex#1{%
+  \iflinks
+    \expandafter\newwrite \csname#1indfile\endcsname
+    \openout \csname#1indfile\endcsname \jobname.#1 % Open the file
+  \fi
+  \expandafter\xdef\csname#1index\endcsname{%     % Define @#1index
+    \noexpand\doindex{#1}}
+}
+
+% @defindex foo  ==  \newindex{foo}
+%
+\def\defindex{\parsearg\newindex}
+
+% Define @defcodeindex, like @defindex except put all entries in @code.
+%
+\def\defcodeindex{\parsearg\newcodeindex}
+%
+\def\newcodeindex#1{%
+  \iflinks
+    \expandafter\newwrite \csname#1indfile\endcsname
+    \openout \csname#1indfile\endcsname \jobname.#1
+  \fi
+  \expandafter\xdef\csname#1index\endcsname{%
+    \noexpand\docodeindex{#1}}%
+}
+
+
+% @synindex foo bar    makes index foo feed into index bar.
+% Do this instead of @defindex foo if you don't want it as a separate index.
+%
+% @syncodeindex foo bar   similar, but put all entries made for index foo
+% inside @code.
+%
+\def\synindex#1 #2 {\dosynindex\doindex{#1}{#2}}
+\def\syncodeindex#1 #2 {\dosynindex\docodeindex{#1}{#2}}
+
+% #1 is \doindex or \docodeindex, #2 the index getting redefined (foo),
+% #3 the target index (bar).
+\def\dosynindex#1#2#3{%
+  % Only do \closeout if we haven't already done it, else we'll end up
+  % closing the target index.
+  \expandafter \ifx\csname donesynindex#2\endcsname \undefined
+    % The \closeout helps reduce unnecessary open files; the limit on the
+    % Acorn RISC OS is a mere 16 files.
+    \expandafter\closeout\csname#2indfile\endcsname
+    \expandafter\let\csname\donesynindex#2\endcsname = 1
+  \fi
+  % redefine \fooindfile:
+  \expandafter\let\expandafter\temp\expandafter=\csname#3indfile\endcsname
+  \expandafter\let\csname#2indfile\endcsname=\temp
+  % redefine \fooindex:
+  \expandafter\xdef\csname#2index\endcsname{\noexpand#1{#3}}%
+}
+
+% Define \doindex, the driver for all \fooindex macros.
+% Argument #1 is generated by the calling \fooindex macro,
+%  and it is "foo", the name of the index.
+
+% \doindex just uses \parsearg; it calls \doind for the actual work.
+% This is because \doind is more useful to call from other macros.
+
+% There is also \dosubind {index}{topic}{subtopic}
+% which makes an entry in a two-level index such as the operation index.
+
+\def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer}
+\def\singleindexer #1{\doind{\indexname}{#1}}
+
+% like the previous two, but they put @code around the argument.
+\def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer}
+\def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}}
+
+% Take care of Texinfo commands that can appear in an index entry.
+% Since there are some commands we want to expand, and others we don't,
+% we have to laboriously prevent expansion for those that we don't.
+%
+\def\indexdummies{%
+  \def\@{@}% change to @@ when we switch to @ as escape char in index files.
+  \def\ {\realbackslash\space }%
+  % Need these in case \tex is in effect and \{ is a \delimiter again.
+  % But can't use \lbracecmd and \rbracecmd because texindex assumes
+  % braces and backslashes are used only as delimiters.
+  \let\{ = \mylbrace
+  \let\} = \myrbrace
+  %
+  % \definedummyword defines \#1 as \realbackslash #1\space, thus
+  % effectively preventing its expansion.  This is used only for control
+  % words, not control letters, because the \space would be incorrect
+  % for control characters, but is needed to separate the control word
+  % from whatever follows.
+  %
+  % For control letters, we have \definedummyletter, which omits the
+  % space.
+  %
+  % These can be used both for control words that take an argument and
+  % those that do not.  If it is followed by {arg} in the input, then
+  % that will dutifully get written to the index (or wherever).
+  %
+  \def\definedummyword##1{%
+    \expandafter\def\csname ##1\endcsname{\realbackslash ##1\space}%
+  }%
+  \def\definedummyletter##1{%
+    \expandafter\def\csname ##1\endcsname{\realbackslash ##1}%
+  }%
+  \let\definedummyaccent\definedummyletter
+  %
+  % Do the redefinitions.
+  \commondummies
+}
+
+% For the aux file, @ is the escape character.  So we want to redefine
+% everything using @ instead of \realbackslash.  When everything uses
+% @, this will be simpler.
+%
+\def\atdummies{%
+  \def\@{@@}%
+  \def\ {@ }%
+  \let\{ = \lbraceatcmd
+  \let\} = \rbraceatcmd
+  %
+  % (See comments in \indexdummies.)
+  \def\definedummyword##1{%
+    \expandafter\def\csname ##1\endcsname{@##1\space}%
+  }%
+  \def\definedummyletter##1{%
+    \expandafter\def\csname ##1\endcsname{@##1}%
+  }%
+  \let\definedummyaccent\definedummyletter
+  %
+  % Do the redefinitions.
+  \commondummies
+}
+
+% Called from \indexdummies and \atdummies.  \definedummyword and
+% \definedummyletter must be defined first.
+%
+\def\commondummies{%
+  %
+  \normalturnoffactive
+  %
+  \commondummiesnofonts
+  %
+  \definedummyletter{_}%
+  %
+  % Non-English letters.
+  \definedummyword{AA}%
+  \definedummyword{AE}%
+  \definedummyword{L}%
+  \definedummyword{OE}%
+  \definedummyword{O}%
+  \definedummyword{aa}%
+  \definedummyword{ae}%
+  \definedummyword{l}%
+  \definedummyword{oe}%
+  \definedummyword{o}%
+  \definedummyword{ss}%
+  \definedummyword{exclamdown}%
+  \definedummyword{questiondown}%
+  \definedummyword{ordf}%
+  \definedummyword{ordm}%
+  %
+  % Although these internal commands shouldn't show up, sometimes they do.
+  \definedummyword{bf}%
+  \definedummyword{gtr}%
+  \definedummyword{hat}%
+  \definedummyword{less}%
+  \definedummyword{sf}%
+  \definedummyword{sl}%
+  \definedummyword{tclose}%
+  \definedummyword{tt}%
+  %
+  \definedummyword{LaTeX}%
+  \definedummyword{TeX}%
+  %
+  % Assorted special characters.
+  \definedummyword{bullet}%
+  \definedummyword{comma}%
+  \definedummyword{copyright}%
+  \definedummyword{registeredsymbol}%
+  \definedummyword{dots}%
+  \definedummyword{enddots}%
+  \definedummyword{equiv}%
+  \definedummyword{error}%
+  \definedummyword{expansion}%
+  \definedummyword{minus}%
+  \definedummyword{pounds}%
+  \definedummyword{point}%
+  \definedummyword{print}%
+  \definedummyword{result}%
+  %
+  % Handle some cases of @value -- where it does not contain any
+  % (non-fully-expandable) commands.
+  \makevalueexpandable
+  %
+  % Normal spaces, not active ones.
+  \unsepspaces
+  %
+  % No macro expansion.
+  \turnoffmacros
+}
+
+% \commondummiesnofonts: common to \commondummies and \indexnofonts.
+%
+% Better have this without active chars.
+{
+  \catcode`\~=\other
+  \gdef\commondummiesnofonts{%
+    % Control letters and accents.
+    \definedummyletter{!}%
+    \definedummyaccent{"}%
+    \definedummyaccent{'}%
+    \definedummyletter{*}%
+    \definedummyaccent{,}%
+    \definedummyletter{.}%
+    \definedummyletter{/}%
+    \definedummyletter{:}%
+    \definedummyaccent{=}%
+    \definedummyletter{?}%
+    \definedummyaccent{^}%
+    \definedummyaccent{`}%
+    \definedummyaccent{~}%
+    \definedummyword{u}%
+    \definedummyword{v}%
+    \definedummyword{H}%
+    \definedummyword{dotaccent}%
+    \definedummyword{ringaccent}%
+    \definedummyword{tieaccent}%
+    \definedummyword{ubaraccent}%
+    \definedummyword{udotaccent}%
+    \definedummyword{dotless}%
+    %
+    % Texinfo font commands.
+    \definedummyword{b}%
+    \definedummyword{i}%
+    \definedummyword{r}%
+    \definedummyword{sc}%
+    \definedummyword{t}%
+    %
+    % Commands that take arguments.
+    \definedummyword{acronym}%
+    \definedummyword{cite}%
+    \definedummyword{code}%
+    \definedummyword{command}%
+    \definedummyword{dfn}%
+    \definedummyword{emph}%
+    \definedummyword{env}%
+    \definedummyword{file}%
+    \definedummyword{kbd}%
+    \definedummyword{key}%
+    \definedummyword{math}%
+    \definedummyword{option}%
+    \definedummyword{samp}%
+    \definedummyword{strong}%
+    \definedummyword{tie}%
+    \definedummyword{uref}%
+    \definedummyword{url}%
+    \definedummyword{var}%
+    \definedummyword{verb}%
+    \definedummyword{w}%
+  }
+}
+
+% \indexnofonts is used when outputting the strings to sort the index
+% by, and when constructing control sequence names.  It eliminates all
+% control sequences and just writes whatever the best ASCII sort string
+% would be for a given command (usually its argument).
+%
+\def\indexnofonts{%
+  % Accent commands should become @asis.
+  \def\definedummyaccent##1{%
+    \expandafter\let\csname ##1\endcsname\asis
+  }%
+  % We can just ignore other control letters.
+  \def\definedummyletter##1{%
+    \expandafter\def\csname ##1\endcsname{}%
+  }%
+  % Hopefully, all control words can become @asis.
+  \let\definedummyword\definedummyaccent
+  %
+  \commondummiesnofonts
+  %
+  % Don't no-op \tt, since it isn't a user-level command
+  % and is used in the definitions of the active chars like <, >, |, etc.
+  % Likewise with the other plain tex font commands.
+  %\let\tt=\asis
+  %
+  \def\ { }%
+  \def\@{@}%
+  % how to handle braces?
+  \def\_{\normalunderscore}%
+  %
+  % Non-English letters.
+  \def\AA{AA}%
+  \def\AE{AE}%
+  \def\L{L}%
+  \def\OE{OE}%
+  \def\O{O}%
+  \def\aa{aa}%
+  \def\ae{ae}%
+  \def\l{l}%
+  \def\oe{oe}%
+  \def\o{o}%
+  \def\ss{ss}%
+  \def\exclamdown{!}%
+  \def\questiondown{?}%
+  \def\ordf{a}%
+  \def\ordm{o}%
+  %
+  \def\LaTeX{LaTeX}%
+  \def\TeX{TeX}%
+  %
+  % Assorted special characters.
+  % (The following {} will end up in the sort string, but that's ok.)
+  \def\bullet{bullet}%
+  \def\comma{,}%
+  \def\copyright{copyright}%
+  \def\registeredsymbol{R}%
+  \def\dots{...}%
+  \def\enddots{...}%
+  \def\equiv{==}%
+  \def\error{error}%
+  \def\expansion{==>}%
+  \def\minus{-}%
+  \def\pounds{pounds}%
+  \def\point{.}%
+  \def\print{-|}%
+  \def\result{=>}%
+  %
+  % Don't write macro names.
+  \emptyusermacros
+}
+
+\let\indexbackslash=0  %overridden during \printindex.
+\let\SETmarginindex=\relax % put index entries in margin (undocumented)?
+
+% Most index entries go through here, but \dosubind is the general case.
+% #1 is the index name, #2 is the entry text.
+\def\doind#1#2{\dosubind{#1}{#2}{}}
+
+% Workhorse for all \fooindexes.
+% #1 is name of index, #2 is stuff to put there, #3 is subentry --
+% empty if called from \doind, as we usually are (the main exception
+% is with most defuns, which call us directly).
+%
+\def\dosubind#1#2#3{%
+  \iflinks
+  {%
+    % Store the main index entry text (including the third arg).
+    \toks0 = {#2}%
+    % If third arg is present, precede it with a space.
+    \def\thirdarg{#3}%
+    \ifx\thirdarg\empty \else
+      \toks0 = \expandafter{\the\toks0 \space #3}%
+    \fi
+    %
+    \edef\writeto{\csname#1indfile\endcsname}%
+    %
+    \ifvmode
+      \dosubindsanitize
+    \else
+      \dosubindwrite
+    \fi
+  }%
+  \fi
+}
+
+% Write the entry in \toks0 to the index file:
+%
+\def\dosubindwrite{%
+  % Put the index entry in the margin if desired.
+  \ifx\SETmarginindex\relax\else
+    \insert\margin{\hbox{\vrule height8pt depth3pt width0pt \the\toks0}}%
+  \fi
+  %
+  % Remember, we are within a group.
+  \indexdummies % Must do this here, since \bf, etc expand at this stage
+  \escapechar=`\\
+  \def\backslashcurfont{\indexbackslash}% \indexbackslash isn't defined now
+      % so it will be output as is; and it will print as backslash.
+  %
+  % Process the index entry with all font commands turned off, to
+  % get the string to sort by.
+  {\indexnofonts
+   \edef\temp{\the\toks0}% need full expansion
+   \xdef\indexsorttmp{\temp}%
+  }%
+  %
+  % Set up the complete index entry, with both the sort key and
+  % the original text, including any font commands.  We write
+  % three arguments to \entry to the .?? file (four in the
+  % subentry case), texindex reduces to two when writing the .??s
+  % sorted result.
+  \edef\temp{%
+    \write\writeto{%
+      \string\entry{\indexsorttmp}{\noexpand\folio}{\the\toks0}}%
+  }%
+  \temp
+}
+
+% Take care of unwanted page breaks:
+%
+% If a skip is the last thing on the list now, preserve it
+% by backing up by \lastskip, doing the \write, then inserting
+% the skip again.  Otherwise, the whatsit generated by the
+% \write will make \lastskip zero.  The result is that sequences
+% like this:
+% @end defun
+% @tindex whatever
+% @defun ...
+% will have extra space inserted, because the \medbreak in the
+% start of the @defun won't see the skip inserted by the @end of
+% the previous defun.
+%
+% But don't do any of this if we're not in vertical mode.  We
+% don't want to do a \vskip and prematurely end a paragraph.
+%
+% Avoid page breaks due to these extra skips, too.
+%
+% But wait, there is a catch there:
+% We'll have to check whether \lastskip is zero skip.  \ifdim is not
+% sufficient for this purpose, as it ignores stretch and shrink parts
+% of the skip.  The only way seems to be to check the textual
+% representation of the skip.
+%
+% The following is almost like \def\zeroskipmacro{0.0pt} except that
+% the ``p'' and ``t'' characters have catcode \other, not 11 (letter).
+%
+\edef\zeroskipmacro{\expandafter\the\csname z@skip\endcsname}
+%
+% ..., ready, GO:
+%
+\def\dosubindsanitize{%
+  % \lastskip and \lastpenalty cannot both be nonzero simultaneously.
+  \skip0 = \lastskip
+  \edef\lastskipmacro{\the\lastskip}%
+  \count255 = \lastpenalty
+  %
+  % If \lastskip is nonzero, that means the last item was a
+  % skip.  And since a skip is discardable, that means this
+  % -\skip0 glue we're inserting is preceded by a
+  % non-discardable item, therefore it is not a potential
+  % breakpoint, therefore no \nobreak needed.
+  \ifx\lastskipmacro\zeroskipmacro
+  \else
+    \vskip-\skip0
+  \fi
+  %
+  \dosubindwrite
+  %
+  \ifx\lastskipmacro\zeroskipmacro
+    % If \lastskip was zero, perhaps the last item was a penalty, and
+    % perhaps it was >=10000, e.g., a \nobreak.  In that case, we want
+    % to re-insert the same penalty (values >10000 are used for various
+    % signals); since we just inserted a non-discardable item, any
+    % following glue (such as a \parskip) would be a breakpoint.  For example:
+    % 
+    %   @deffn deffn-whatever
+    %   @vindex index-whatever
+    %   Description.
+    % would allow a break between the index-whatever whatsit
+    % and the "Description." paragraph.
+    \ifnum\count255>9999 \penalty\count255 \fi
+  \else
+    % On the other hand, if we had a nonzero \lastskip,
+    % this make-up glue would be preceded by a non-discardable item
+    % (the whatsit from the \write), so we must insert a \nobreak.
+    \nobreak\vskip\skip0
+  \fi
+}
+
+% The index entry written in the file actually looks like
+%  \entry {sortstring}{page}{topic}
+% or
+%  \entry {sortstring}{page}{topic}{subtopic}
+% The texindex program reads in these files and writes files
+% containing these kinds of lines:
+%  \initial {c}
+%     before the first topic whose initial is c
+%  \entry {topic}{pagelist}
+%     for a topic that is used without subtopics
+%  \primary {topic}
+%     for the beginning of a topic that is used with subtopics
+%  \secondary {subtopic}{pagelist}
+%     for each subtopic.
+
+% Define the user-accessible indexing commands
+% @findex, @vindex, @kindex, @cindex.
+
+\def\findex {\fnindex}
+\def\kindex {\kyindex}
+\def\cindex {\cpindex}
+\def\vindex {\vrindex}
+\def\tindex {\tpindex}
+\def\pindex {\pgindex}
+
+\def\cindexsub {\begingroup\obeylines\cindexsub}
+{\obeylines %
+\gdef\cindexsub "#1" #2^^M{\endgroup %
+\dosubind{cp}{#2}{#1}}}
+
+% Define the macros used in formatting output of the sorted index material.
+
+% @printindex causes a particular index (the ??s file) to get printed.
+% It does not print any chapter heading (usually an @unnumbered).
+%
+\parseargdef\printindex{\begingroup
+  \dobreak \chapheadingskip{10000}%
+  %
+  \smallfonts \rm
+  \tolerance = 9500
+  \everypar = {}% don't want the \kern\-parindent from indentation suppression.
+  %
+  % See if the index file exists and is nonempty.
+  % Change catcode of @ here so that if the index file contains
+  % \initial {@}
+  % as its first line, TeX doesn't complain about mismatched braces
+  % (because it thinks @} is a control sequence).
+  \catcode`\@ = 11
+  \openin 1 \jobname.#1s
+  \ifeof 1
+    % \enddoublecolumns gets confused if there is no text in the index,
+    % and it loses the chapter title and the aux file entries for the
+    % index.  The easiest way to prevent this problem is to make sure
+    % there is some text.
+    \putwordIndexNonexistent
+  \else
+    %
+    % If the index file exists but is empty, then \openin leaves \ifeof
+    % false.  We have to make TeX try to read something from the file, so
+    % it can discover if there is anything in it.
+    \read 1 to \temp
+    \ifeof 1
+      \putwordIndexIsEmpty
+    \else
+      % Index files are almost Texinfo source, but we use \ as the escape
+      % character.  It would be better to use @, but that's too big a change
+      % to make right now.
+      \def\indexbackslash{\backslashcurfont}%
+      \catcode`\\ = 0
+      \escapechar = `\\
+      \begindoublecolumns
+      \input \jobname.#1s
+      \enddoublecolumns
+    \fi
+  \fi
+  \closein 1
+\endgroup}
+
+% These macros are used by the sorted index file itself.
+% Change them to control the appearance of the index.
+
+\def\initial#1{{%
+  % Some minor font changes for the special characters.
+  \let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
+  %
+  % Remove any glue we may have, we'll be inserting our own.
+  \removelastskip
+  %
+  % We like breaks before the index initials, so insert a bonus.
+  \penalty -300
+  %
+  % Typeset the initial.  Making this add up to a whole number of
+  % baselineskips increases the chance of the dots lining up from column
+  % to column.  It still won't often be perfect, because of the stretch
+  % we need before each entry, but it's better.
+  %
+  % No shrink because it confuses \balancecolumns.
+  \vskip 1.67\baselineskip plus .5\baselineskip
+  \leftline{\secbf #1}%
+  \vskip .33\baselineskip plus .1\baselineskip
+  %
+  % Do our best not to break after the initial.
+  \nobreak
+}}
+
+% \entry typesets a paragraph consisting of the text (#1), dot leaders, and
+% then page number (#2) flushed to the right margin.  It is used for index
+% and table of contents entries.  The paragraph is indented by \leftskip.
+%
+% A straightforward implementation would start like this:
+%	\def\entry#1#2{...
+% But this frozes the catcodes in the argument, and can cause problems to
+% @code, which sets - active.  This problem was fixed by a kludge---
+% ``-'' was active throughout whole index, but this isn't really right.
+%
+% The right solution is to prevent \entry from swallowing the whole text.
+%                                 --kasal, 21nov03
+\def\entry{%
+  \begingroup
+    %
+    % Start a new paragraph if necessary, so our assignments below can't
+    % affect previous text.
+    \par
+    %
+    % Do not fill out the last line with white space.
+    \parfillskip = 0in
+    %
+    % No extra space above this paragraph.
+    \parskip = 0in
+    %
+    % Do not prefer a separate line ending with a hyphen to fewer lines.
+    \finalhyphendemerits = 0
+    %
+    % \hangindent is only relevant when the entry text and page number
+    % don't both fit on one line.  In that case, bob suggests starting the
+    % dots pretty far over on the line.  Unfortunately, a large
+    % indentation looks wrong when the entry text itself is broken across
+    % lines.  So we use a small indentation and put up with long leaders.
+    %
+    % \hangafter is reset to 1 (which is the value we want) at the start
+    % of each paragraph, so we need not do anything with that.
+    \hangindent = 2em
+    %
+    % When the entry text needs to be broken, just fill out the first line
+    % with blank space.
+    \rightskip = 0pt plus1fil
+    %
+    % A bit of stretch before each entry for the benefit of balancing
+    % columns.
+    \vskip 0pt plus1pt
+    %
+    % Swallow the left brace of the text (first parameter):
+    \afterassignment\doentry
+    \let\temp =
+}
+\def\doentry{%
+    \bgroup % Instead of the swallowed brace.
+      \noindent
+      \aftergroup\finishentry
+      % And now comes the text of the entry.
+}
+\def\finishentry#1{%
+    % #1 is the page number.
+    %
+    % The following is kludged to not output a line of dots in the index if
+    % there are no page numbers.  The next person who breaks this will be
+    % cursed by a Unix daemon.
+    \def\tempa{{\rm }}%
+    \def\tempb{#1}%
+    \edef\tempc{\tempa}%
+    \edef\tempd{\tempb}%
+    \ifx\tempc\tempd
+      \ %
+    \else
+      %
+      % If we must, put the page number on a line of its own, and fill out
+      % this line with blank space.  (The \hfil is overwhelmed with the
+      % fill leaders glue in \indexdotfill if the page number does fit.)
+      \hfil\penalty50
+      \null\nobreak\indexdotfill % Have leaders before the page number.
+      %
+      % The `\ ' here is removed by the implicit \unskip that TeX does as
+      % part of (the primitive) \par.  Without it, a spurious underfull
+      % \hbox ensues.
+      \ifpdf
+	\pdfgettoks#1.%
+	\ \the\toksA
+      \else
+	\ #1%
+      \fi
+    \fi
+    \par
+  \endgroup
+}
+
+% Like \dotfill except takes at least 1 em.
+\def\indexdotfill{\cleaders
+  \hbox{$\mathsurround=0pt \mkern1.5mu ${\it .}$ \mkern1.5mu$}\hskip 1em plus 1fill}
+
+\def\primary #1{\line{#1\hfil}}
+
+\newskip\secondaryindent \secondaryindent=0.5cm
+\def\secondary#1#2{{%
+  \parfillskip=0in
+  \parskip=0in
+  \hangindent=1in
+  \hangafter=1
+  \noindent\hskip\secondaryindent\hbox{#1}\indexdotfill
+  \ifpdf
+    \pdfgettoks#2.\ \the\toksA % The page number ends the paragraph.
+  \else
+    #2
+  \fi
+  \par
+}}
+
+% Define two-column mode, which we use to typeset indexes.
+% Adapted from the TeXbook, page 416, which is to say,
+% the manmac.tex format used to print the TeXbook itself.
+\catcode`\@=11
+
+\newbox\partialpage
+\newdimen\doublecolumnhsize
+
+\def\begindoublecolumns{\begingroup % ended by \enddoublecolumns
+  % Grab any single-column material above us.
+  \output = {%
+    %
+    % Here is a possibility not foreseen in manmac: if we accumulate a
+    % whole lot of material, we might end up calling this \output
+    % routine twice in a row (see the doublecol-lose test, which is
+    % essentially a couple of indexes with @setchapternewpage off).  In
+    % that case we just ship out what is in \partialpage with the normal
+    % output routine.  Generally, \partialpage will be empty when this
+    % runs and this will be a no-op.  See the indexspread.tex test case.
+    \ifvoid\partialpage \else
+      \onepageout{\pagecontents\partialpage}%
+    \fi
+    %
+    \global\setbox\partialpage = \vbox{%
+      % Unvbox the main output page.
+      \unvbox\PAGE
+      \kern-\topskip \kern\baselineskip
+    }%
+  }%
+  \eject % run that output routine to set \partialpage
+  %
+  % Use the double-column output routine for subsequent pages.
+  \output = {\doublecolumnout}%
+  %
+  % Change the page size parameters.  We could do this once outside this
+  % routine, in each of @smallbook, @afourpaper, and the default 8.5x11
+  % format, but then we repeat the same computation.  Repeating a couple
+  % of assignments once per index is clearly meaningless for the
+  % execution time, so we may as well do it in one place.
+  %
+  % First we halve the line length, less a little for the gutter between
+  % the columns.  We compute the gutter based on the line length, so it
+  % changes automatically with the paper format.  The magic constant
+  % below is chosen so that the gutter has the same value (well, +-<1pt)
+  % as it did when we hard-coded it.
+  %
+  % We put the result in a separate register, \doublecolumhsize, so we
+  % can restore it in \pagesofar, after \hsize itself has (potentially)
+  % been clobbered.
+  %
+  \doublecolumnhsize = \hsize
+    \advance\doublecolumnhsize by -.04154\hsize
+    \divide\doublecolumnhsize by 2
+  \hsize = \doublecolumnhsize
+  %
+  % Double the \vsize as well.  (We don't need a separate register here,
+  % since nobody clobbers \vsize.)
+  \vsize = 2\vsize
+}
+
+% The double-column output routine for all double-column pages except
+% the last.
+%
+\def\doublecolumnout{%
+  \splittopskip=\topskip \splitmaxdepth=\maxdepth
+  % Get the available space for the double columns -- the normal
+  % (undoubled) page height minus any material left over from the
+  % previous page.
+  \dimen@ = \vsize
+  \divide\dimen@ by 2
+  \advance\dimen@ by -\ht\partialpage
+  %
+  % box0 will be the left-hand column, box2 the right.
+  \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
+  \onepageout\pagesofar
+  \unvbox255
+  \penalty\outputpenalty
+}
+%
+% Re-output the contents of the output page -- any previous material,
+% followed by the two boxes we just split, in box0 and box2.
+\def\pagesofar{%
+  \unvbox\partialpage
+  %
+  \hsize = \doublecolumnhsize
+  \wd0=\hsize \wd2=\hsize
+  \hbox to\pagewidth{\box0\hfil\box2}%
+}
+%
+% All done with double columns.
+\def\enddoublecolumns{%
+  \output = {%
+    % Split the last of the double-column material.  Leave it on the
+    % current page, no automatic page break.
+    \balancecolumns
+    %
+    % If we end up splitting too much material for the current page,
+    % though, there will be another page break right after this \output
+    % invocation ends.  Having called \balancecolumns once, we do not
+    % want to call it again.  Therefore, reset \output to its normal
+    % definition right away.  (We hope \balancecolumns will never be
+    % called on to balance too much material, but if it is, this makes
+    % the output somewhat more palatable.)
+    \global\output = {\onepageout{\pagecontents\PAGE}}%
+  }%
+  \eject
+  \endgroup % started in \begindoublecolumns
+  %
+  % \pagegoal was set to the doubled \vsize above, since we restarted
+  % the current page.  We're now back to normal single-column
+  % typesetting, so reset \pagegoal to the normal \vsize (after the
+  % \endgroup where \vsize got restored).
+  \pagegoal = \vsize
+}
+%
+% Called at the end of the double column material.
+\def\balancecolumns{%
+  \setbox0 = \vbox{\unvbox255}% like \box255 but more efficient, see p.120.
+  \dimen@ = \ht0
+  \advance\dimen@ by \topskip
+  \advance\dimen@ by-\baselineskip
+  \divide\dimen@ by 2 % target to split to
+  %debug\message{final 2-column material height=\the\ht0, target=\the\dimen@.}%
+  \splittopskip = \topskip
+  % Loop until we get a decent breakpoint.
+  {%
+    \vbadness = 10000
+    \loop
+      \global\setbox3 = \copy0
+      \global\setbox1 = \vsplit3 to \dimen@
+    \ifdim\ht3>\dimen@
+      \global\advance\dimen@ by 1pt
+    \repeat
+  }%
+  %debug\message{split to \the\dimen@, column heights: \the\ht1, \the\ht3.}%
+  \setbox0=\vbox to\dimen@{\unvbox1}%
+  \setbox2=\vbox to\dimen@{\unvbox3}%
+  %
+  \pagesofar
+}
+\catcode`\@ = \other
+
+
+\message{sectioning,}
+% Chapters, sections, etc.
+
+% \unnumberedno is an oxymoron, of course.  But we count the unnumbered
+% sections so that we can refer to them unambiguously in the pdf
+% outlines by their "section number".  We avoid collisions with chapter
+% numbers by starting them at 10000.  (If a document ever has 10000
+% chapters, we're in trouble anyway, I'm sure.)
+\newcount\unnumberedno \unnumberedno = 10000
+\newcount\chapno
+\newcount\secno        \secno=0
+\newcount\subsecno     \subsecno=0
+\newcount\subsubsecno  \subsubsecno=0
+
+% This counter is funny since it counts through charcodes of letters A, B, ...
+\newcount\appendixno  \appendixno = `\@
+%
+% \def\appendixletter{\char\the\appendixno}
+% We do the following ugly conditional instead of the above simple
+% construct for the sake of pdftex, which needs the actual
+% letter in the expansion, not just typeset.
+%
+\def\appendixletter{%
+  \ifnum\appendixno=`A A%
+  \else\ifnum\appendixno=`B B%
+  \else\ifnum\appendixno=`C C%
+  \else\ifnum\appendixno=`D D%
+  \else\ifnum\appendixno=`E E%
+  \else\ifnum\appendixno=`F F%
+  \else\ifnum\appendixno=`G G%
+  \else\ifnum\appendixno=`H H%
+  \else\ifnum\appendixno=`I I%
+  \else\ifnum\appendixno=`J J%
+  \else\ifnum\appendixno=`K K%
+  \else\ifnum\appendixno=`L L%
+  \else\ifnum\appendixno=`M M%
+  \else\ifnum\appendixno=`N N%
+  \else\ifnum\appendixno=`O O%
+  \else\ifnum\appendixno=`P P%
+  \else\ifnum\appendixno=`Q Q%
+  \else\ifnum\appendixno=`R R%
+  \else\ifnum\appendixno=`S S%
+  \else\ifnum\appendixno=`T T%
+  \else\ifnum\appendixno=`U U%
+  \else\ifnum\appendixno=`V V%
+  \else\ifnum\appendixno=`W W%
+  \else\ifnum\appendixno=`X X%
+  \else\ifnum\appendixno=`Y Y%
+  \else\ifnum\appendixno=`Z Z%
+  % The \the is necessary, despite appearances, because \appendixletter is
+  % expanded while writing the .toc file.  \char\appendixno is not
+  % expandable, thus it is written literally, thus all appendixes come out
+  % with the same letter (or @) in the toc without it.
+  \else\char\the\appendixno
+  \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
+  \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi}
+
+% Each @chapter defines this as the name of the chapter.
+% page headings and footings can use it.  @section does likewise.
+% However, they are not reliable, because we don't use marks.
+\def\thischapter{}
+\def\thissection{}
+
+\newcount\absseclevel % used to calculate proper heading level
+\newcount\secbase\secbase=0 % @raisesections/@lowersections modify this count
+
+% @raisesections: treat @section as chapter, @subsection as section, etc.
+\def\raisesections{\global\advance\secbase by -1}
+\let\up=\raisesections % original BFox name
+
+% @lowersections: treat @chapter as section, @section as subsection, etc.
+\def\lowersections{\global\advance\secbase by 1}
+\let\down=\lowersections % original BFox name
+
+% we only have subsub.
+\chardef\maxseclevel = 3
+%
+% A numbered section within an unnumbered changes to unnumbered too.
+% To achive this, remember the "biggest" unnum. sec. we are currently in:
+\chardef\unmlevel = \maxseclevel
+%
+% Trace whether the current chapter is an appendix or not:
+% \chapheadtype is "N" or "A", unnumbered chapters are ignored.
+\def\chapheadtype{N}
+
+% Choose a heading macro
+% #1 is heading type
+% #2 is heading level
+% #3 is text for heading
+\def\genhead#1#2#3{%
+  % Compute the abs. sec. level:
+  \absseclevel=#2
+  \advance\absseclevel by \secbase
+  % Make sure \absseclevel doesn't fall outside the range:
+  \ifnum \absseclevel < 0
+    \absseclevel = 0
+  \else
+    \ifnum \absseclevel > 3
+      \absseclevel = 3
+    \fi
+  \fi
+  % The heading type:
+  \def\headtype{#1}%
+  \if \headtype U%
+    \ifnum \absseclevel < \unmlevel
+      \chardef\unmlevel = \absseclevel
+    \fi
+  \else
+    % Check for appendix sections:
+    \ifnum \absseclevel = 0
+      \edef\chapheadtype{\headtype}%
+    \else
+      \if \headtype A\if \chapheadtype N%
+	\errmessage{@appendix... within a non-appendix chapter}%
+      \fi\fi
+    \fi
+    % Check for numbered within unnumbered:
+    \ifnum \absseclevel > \unmlevel
+      \def\headtype{U}%
+    \else
+      \chardef\unmlevel = 3
+    \fi
+  \fi
+  % Now print the heading:
+  \if \headtype U%
+    \ifcase\absseclevel
+	\unnumberedzzz{#3}%
+    \or \unnumberedseczzz{#3}%
+    \or \unnumberedsubseczzz{#3}%
+    \or \unnumberedsubsubseczzz{#3}%
+    \fi
+  \else
+    \if \headtype A%
+      \ifcase\absseclevel
+	  \appendixzzz{#3}%
+      \or \appendixsectionzzz{#3}%
+      \or \appendixsubseczzz{#3}%
+      \or \appendixsubsubseczzz{#3}%
+      \fi
+    \else
+      \ifcase\absseclevel
+	  \chapterzzz{#3}%
+      \or \seczzz{#3}%
+      \or \numberedsubseczzz{#3}%
+      \or \numberedsubsubseczzz{#3}%
+      \fi
+    \fi
+  \fi
+  \suppressfirstparagraphindent
+}
+
+% an interface:
+\def\numhead{\genhead N}
+\def\apphead{\genhead A}
+\def\unnmhead{\genhead U}
+
+% @chapter, @appendix, @unnumbered.  Increment top-level counter, reset
+% all lower-level sectioning counters to zero.
+%
+% Also set \chaplevelprefix, which we prepend to @float sequence numbers
+% (e.g., figures), q.v.  By default (before any chapter), that is empty.
+\let\chaplevelprefix = \empty
+%
+\outer\parseargdef\chapter{\numhead0{#1}} % normally numhead0 calls chapterzzz
+\def\chapterzzz#1{%
+  % section resetting is \global in case the chapter is in a group, such
+  % as an @include file.
+  \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
+    \global\advance\chapno by 1
+  %
+  % Used for \float.
+  \gdef\chaplevelprefix{\the\chapno.}%
+  \resetallfloatnos
+  %
+  \message{\putwordChapter\space \the\chapno}%
+  %
+  % Write the actual heading.
+  \chapmacro{#1}{Ynumbered}{\the\chapno}%
+  %
+  % So @section and the like are numbered underneath this chapter.
+  \global\let\section = \numberedsec
+  \global\let\subsection = \numberedsubsec
+  \global\let\subsubsection = \numberedsubsubsec
+}
+
+\outer\parseargdef\appendix{\apphead0{#1}} % normally apphead0 calls appendixzzz
+\def\appendixzzz#1{%
+  \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
+    \global\advance\appendixno by 1
+  \gdef\chaplevelprefix{\appendixletter.}%
+  \resetallfloatnos
+  %
+  \def\appendixnum{\putwordAppendix\space \appendixletter}%
+  \message{\appendixnum}%
+  %
+  \chapmacro{#1}{Yappendix}{\appendixletter}%
+  %
+  \global\let\section = \appendixsec
+  \global\let\subsection = \appendixsubsec
+  \global\let\subsubsection = \appendixsubsubsec
+}
+
+\outer\parseargdef\unnumbered{\unnmhead0{#1}} % normally unnmhead0 calls unnumberedzzz
+\def\unnumberedzzz#1{%
+  \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
+    \global\advance\unnumberedno by 1
+  %
+  % Since an unnumbered has no number, no prefix for figures.
+  \global\let\chaplevelprefix = \empty
+  \resetallfloatnos
+  %
+  % This used to be simply \message{#1}, but TeX fully expands the
+  % argument to \message.  Therefore, if #1 contained @-commands, TeX
+  % expanded them.  For example, in `@unnumbered The @cite{Book}', TeX
+  % expanded @cite (which turns out to cause errors because \cite is meant
+  % to be executed, not expanded).
+  %
+  % Anyway, we don't want the fully-expanded definition of @cite to appear
+  % as a result of the \message, we just want `@cite' itself.  We use
+  % \the<toks register> to achieve this: TeX expands \the<toks> only once,
+  % simply yielding the contents of <toks register>.  (We also do this for
+  % the toc entries.)
+  \toks0 = {#1}%
+  \message{(\the\toks0)}%
+  %
+  \chapmacro{#1}{Ynothing}{\the\unnumberedno}%
+  %
+  \global\let\section = \unnumberedsec
+  \global\let\subsection = \unnumberedsubsec
+  \global\let\subsubsection = \unnumberedsubsubsec
+}
+
+% @centerchap is like @unnumbered, but the heading is centered.
+\outer\parseargdef\centerchap{%
+  % Well, we could do the following in a group, but that would break
+  % an assumption that \chapmacro is called at the outermost level.
+  % Thus we are safer this way:		--kasal, 24feb04
+  \let\centerparametersmaybe = \centerparameters
+  \unnmhead0{#1}%
+  \let\centerparametersmaybe = \relax
+}
+
+% @top is like @unnumbered.
+\let\top\unnumbered
+
+% Sections.
+\outer\parseargdef\numberedsec{\numhead1{#1}} % normally calls seczzz
+\def\seczzz#1{%
+  \global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
+  \sectionheading{#1}{sec}{Ynumbered}{\the\chapno.\the\secno}%
+}
+
+\outer\parseargdef\appendixsection{\apphead1{#1}} % normally calls appendixsectionzzz
+\def\appendixsectionzzz#1{%
+  \global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
+  \sectionheading{#1}{sec}{Yappendix}{\appendixletter.\the\secno}%
+}
+\let\appendixsec\appendixsection
+
+\outer\parseargdef\unnumberedsec{\unnmhead1{#1}} % normally calls unnumberedseczzz
+\def\unnumberedseczzz#1{%
+  \global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
+  \sectionheading{#1}{sec}{Ynothing}{\the\unnumberedno.\the\secno}%
+}
+
+% Subsections.
+\outer\parseargdef\numberedsubsec{\numhead2{#1}} % normally calls numberedsubseczzz
+\def\numberedsubseczzz#1{%
+  \global\subsubsecno=0  \global\advance\subsecno by 1
+  \sectionheading{#1}{subsec}{Ynumbered}{\the\chapno.\the\secno.\the\subsecno}%
+}
+
+\outer\parseargdef\appendixsubsec{\apphead2{#1}} % normally calls appendixsubseczzz
+\def\appendixsubseczzz#1{%
+  \global\subsubsecno=0  \global\advance\subsecno by 1
+  \sectionheading{#1}{subsec}{Yappendix}%
+                 {\appendixletter.\the\secno.\the\subsecno}%
+}
+
+\outer\parseargdef\unnumberedsubsec{\unnmhead2{#1}} %normally calls unnumberedsubseczzz
+\def\unnumberedsubseczzz#1{%
+  \global\subsubsecno=0  \global\advance\subsecno by 1
+  \sectionheading{#1}{subsec}{Ynothing}%
+                 {\the\unnumberedno.\the\secno.\the\subsecno}%
+}
+
+% Subsubsections.
+\outer\parseargdef\numberedsubsubsec{\numhead3{#1}} % normally numberedsubsubseczzz
+\def\numberedsubsubseczzz#1{%
+  \global\advance\subsubsecno by 1
+  \sectionheading{#1}{subsubsec}{Ynumbered}%
+                 {\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno}%
+}
+
+\outer\parseargdef\appendixsubsubsec{\apphead3{#1}} % normally appendixsubsubseczzz
+\def\appendixsubsubseczzz#1{%
+  \global\advance\subsubsecno by 1
+  \sectionheading{#1}{subsubsec}{Yappendix}%
+                 {\appendixletter.\the\secno.\the\subsecno.\the\subsubsecno}%
+}
+
+\outer\parseargdef\unnumberedsubsubsec{\unnmhead3{#1}} %normally unnumberedsubsubseczzz
+\def\unnumberedsubsubseczzz#1{%
+  \global\advance\subsubsecno by 1
+  \sectionheading{#1}{subsubsec}{Ynothing}%
+                 {\the\unnumberedno.\the\secno.\the\subsecno.\the\subsubsecno}%
+}
+
+% These macros control what the section commands do, according
+% to what kind of chapter we are in (ordinary, appendix, or unnumbered).
+% Define them by default for a numbered chapter.
+\let\section = \numberedsec
+\let\subsection = \numberedsubsec
+\let\subsubsection = \numberedsubsubsec
+
+% Define @majorheading, @heading and @subheading
+
+% NOTE on use of \vbox for chapter headings, section headings, and such:
+%       1) We use \vbox rather than the earlier \line to permit
+%          overlong headings to fold.
+%       2) \hyphenpenalty is set to 10000 because hyphenation in a
+%          heading is obnoxious; this forbids it.
+%       3) Likewise, headings look best if no \parindent is used, and
+%          if justification is not attempted.  Hence \raggedright.
+
+
+\def\majorheading{%
+  {\advance\chapheadingskip by 10pt \chapbreak }%
+  \parsearg\chapheadingzzz
+}
+
+\def\chapheading{\chapbreak \parsearg\chapheadingzzz}
+\def\chapheadingzzz#1{%
+  {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
+                    \parindent=0pt\raggedright
+                    \rm #1\hfill}}%
+  \bigskip \par\penalty 200\relax
+  \suppressfirstparagraphindent
+}
+
+% @heading, @subheading, @subsubheading.
+\parseargdef\heading{\sectionheading{#1}{sec}{Yomitfromtoc}{}
+  \suppressfirstparagraphindent}
+\parseargdef\subheading{\sectionheading{#1}{subsec}{Yomitfromtoc}{}
+  \suppressfirstparagraphindent}
+\parseargdef\subsubheading{\sectionheading{#1}{subsubsec}{Yomitfromtoc}{}
+  \suppressfirstparagraphindent}
+
+% These macros generate a chapter, section, etc. heading only
+% (including whitespace, linebreaking, etc. around it),
+% given all the information in convenient, parsed form.
+
+%%% Args are the skip and penalty (usually negative)
+\def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
+
+%%% Define plain chapter starts, and page on/off switching for it
+% Parameter controlling skip before chapter headings (if needed)
+
+\newskip\chapheadingskip
+
+\def\chapbreak{\dobreak \chapheadingskip {-4000}}
+\def\chappager{\par\vfill\supereject}
+\def\chapoddpage{\chappager \ifodd\pageno \else \hbox to 0pt{} \chappager\fi}
+
+\def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
+
+\def\CHAPPAGoff{%
+\global\let\contentsalignmacro = \chappager
+\global\let\pchapsepmacro=\chapbreak
+\global\let\pagealignmacro=\chappager}
+
+\def\CHAPPAGon{%
+\global\let\contentsalignmacro = \chappager
+\global\let\pchapsepmacro=\chappager
+\global\let\pagealignmacro=\chappager
+\global\def\HEADINGSon{\HEADINGSsingle}}
+
+\def\CHAPPAGodd{%
+\global\let\contentsalignmacro = \chapoddpage
+\global\let\pchapsepmacro=\chapoddpage
+\global\let\pagealignmacro=\chapoddpage
+\global\def\HEADINGSon{\HEADINGSdouble}}
+
+\CHAPPAGon
+
+% Chapter opening.
+%
+% #1 is the text, #2 is the section type (Ynumbered, Ynothing,
+% Yappendix, Yomitfromtoc), #3 the chapter number.
+%
+% To test against our argument.
+\def\Ynothingkeyword{Ynothing}
+\def\Yomitfromtockeyword{Yomitfromtoc}
+\def\Yappendixkeyword{Yappendix}
+%
+\def\chapmacro#1#2#3{%
+  \pchapsepmacro
+  {%
+    \chapfonts \rm
+    %
+    % Have to define \thissection before calling \donoderef, because the
+    % xref code eventually uses it.  On the other hand, it has to be called
+    % after \pchapsepmacro, or the headline will change too soon.
+    \gdef\thissection{#1}%
+    \gdef\thischaptername{#1}%
+    %
+    % Only insert the separating space if we have a chapter/appendix
+    % number, and don't print the unnumbered ``number''.
+    \def\temptype{#2}%
+    \ifx\temptype\Ynothingkeyword
+      \setbox0 = \hbox{}%
+      \def\toctype{unnchap}%
+      \def\thischapter{#1}%
+    \else\ifx\temptype\Yomitfromtockeyword
+      \setbox0 = \hbox{}% contents like unnumbered, but no toc entry
+      \def\toctype{omit}%
+      \xdef\thischapter{}%
+    \else\ifx\temptype\Yappendixkeyword
+      \setbox0 = \hbox{\putwordAppendix{} #3\enspace}%
+      \def\toctype{app}%
+      % We don't substitute the actual chapter name into \thischapter
+      % because we don't want its macros evaluated now.  And we don't
+      % use \thissection because that changes with each section.
+      %
+      \xdef\thischapter{\putwordAppendix{} \appendixletter:
+                        \noexpand\thischaptername}%
+    \else
+      \setbox0 = \hbox{#3\enspace}%
+      \def\toctype{numchap}%
+      \xdef\thischapter{\putwordChapter{} \the\chapno:
+                        \noexpand\thischaptername}%
+    \fi\fi\fi
+    %
+    % Write the toc entry for this chapter.  Must come before the
+    % \donoderef, because we include the current node name in the toc
+    % entry, and \donoderef resets it to empty.
+    \writetocentry{\toctype}{#1}{#3}%
+    %
+    % For pdftex, we have to write out the node definition (aka, make
+    % the pdfdest) after any page break, but before the actual text has
+    % been typeset.  If the destination for the pdf outline is after the
+    % text, then jumping from the outline may wind up with the text not
+    % being visible, for instance under high magnification.
+    \donoderef{#2}%
+    %
+    % Typeset the actual heading.
+    \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright
+          \hangindent=\wd0 \centerparametersmaybe
+          \unhbox0 #1\par}%
+  }%
+  \nobreak\bigskip % no page break after a chapter title
+  \nobreak
+}
+
+% @centerchap -- centered and unnumbered.
+\let\centerparametersmaybe = \relax
+\def\centerparameters{%
+  \advance\rightskip by 3\rightskip
+  \leftskip = \rightskip
+  \parfillskip = 0pt
+}
+
+
+% I don't think this chapter style is supported any more, so I'm not
+% updating it with the new noderef stuff.  We'll see.  --karl, 11aug03.
+%
+\def\setchapterstyle #1 {\csname CHAPF#1\endcsname}
+%
+\def\unnchfopen #1{%
+\chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
+                       \parindent=0pt\raggedright
+                       \rm #1\hfill}}\bigskip \par\nobreak
+}
+\def\chfopen #1#2{\chapoddpage {\chapfonts
+\vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}%
+\par\penalty 5000 %
+}
+\def\centerchfopen #1{%
+\chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
+                       \parindent=0pt
+                       \hfill {\rm #1}\hfill}}\bigskip \par\nobreak
+}
+\def\CHAPFopen{%
+  \global\let\chapmacro=\chfopen
+  \global\let\centerchapmacro=\centerchfopen}
+
+
+% Section titles.  These macros combine the section number parts and
+% call the generic \sectionheading to do the printing.
+%
+\newskip\secheadingskip
+\def\secheadingbreak{\dobreak \secheadingskip{-1000}}
+
+% Subsection titles.
+\newskip\subsecheadingskip
+\def\subsecheadingbreak{\dobreak \subsecheadingskip{-500}}
+
+% Subsubsection titles.
+\def\subsubsecheadingskip{\subsecheadingskip}
+\def\subsubsecheadingbreak{\subsecheadingbreak}
+
+
+% Print any size, any type, section title.
+%
+% #1 is the text, #2 is the section level (sec/subsec/subsubsec), #3 is
+% the section type for xrefs (Ynumbered, Ynothing, Yappendix), #4 is the
+% section number.
+%
+\def\sectionheading#1#2#3#4{%
+  {%
+    % Switch to the right set of fonts.
+    \csname #2fonts\endcsname \rm
+    %
+    % Insert space above the heading.
+    \csname #2headingbreak\endcsname
+    %
+    % Only insert the space after the number if we have a section number.
+    \def\sectionlevel{#2}%
+    \def\temptype{#3}%
+    %
+    \ifx\temptype\Ynothingkeyword
+      \setbox0 = \hbox{}%
+      \def\toctype{unn}%
+      \gdef\thissection{#1}%
+    \else\ifx\temptype\Yomitfromtockeyword
+      % for @headings -- no section number, don't include in toc,
+      % and don't redefine \thissection.
+      \setbox0 = \hbox{}%
+      \def\toctype{omit}%
+      \let\sectionlevel=\empty
+    \else\ifx\temptype\Yappendixkeyword
+      \setbox0 = \hbox{#4\enspace}%
+      \def\toctype{app}%
+      \gdef\thissection{#1}%
+    \else
+      \setbox0 = \hbox{#4\enspace}%
+      \def\toctype{num}%
+      \gdef\thissection{#1}%
+    \fi\fi\fi
+    %
+    % Write the toc entry (before \donoderef).  See comments in \chfplain.
+    \writetocentry{\toctype\sectionlevel}{#1}{#4}%
+    %
+    % Write the node reference (= pdf destination for pdftex).
+    % Again, see comments in \chfplain.
+    \donoderef{#3}%
+    %
+    % Output the actual section heading.
+    \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright
+          \hangindent=\wd0  % zero if no section number
+          \unhbox0 #1}%
+  }%
+  % Add extra space after the heading -- half of whatever came above it.
+  % Don't allow stretch, though.
+  \kern .5 \csname #2headingskip\endcsname
+  %
+  % Do not let the kern be a potential breakpoint, as it would be if it
+  % was followed by glue.
+  \nobreak
+  %
+  % We'll almost certainly start a paragraph next, so don't let that
+  % glue accumulate.  (Not a breakpoint because it's preceded by a
+  % discardable item.)
+  \vskip-\parskip
+  % 
+  % This is purely so the last item on the list is a known \penalty >
+  % 10000.  This is so \startdefun can avoid allowing breakpoints after
+  % section headings.  Otherwise, it would insert a valid breakpoint between:
+  % 
+  %   @section sec-whatever
+  %   @deffn def-whatever
+  \penalty 10001
+}
+
+
+\message{toc,}
+% Table of contents.
+\newwrite\tocfile
+
+% Write an entry to the toc file, opening it if necessary.
+% Called from @chapter, etc.
+%
+% Example usage: \writetocentry{sec}{Section Name}{\the\chapno.\the\secno}
+% We append the current node name (if any) and page number as additional
+% arguments for the \{chap,sec,...}entry macros which will eventually
+% read this.  The node name is used in the pdf outlines as the
+% destination to jump to.
+%
+% We open the .toc file for writing here instead of at @setfilename (or
+% any other fixed time) so that @contents can be anywhere in the document.
+% But if #1 is `omit', then we don't do anything.  This is used for the
+% table of contents chapter openings themselves.
+%
+\newif\iftocfileopened
+\def\omitkeyword{omit}%
+%
+\def\writetocentry#1#2#3{%
+  \edef\writetoctype{#1}%
+  \ifx\writetoctype\omitkeyword \else
+    \iftocfileopened\else
+      \immediate\openout\tocfile = \jobname.toc
+      \global\tocfileopenedtrue
+    \fi
+    %
+    \iflinks
+      \toks0 = {#2}%
+      \toks2 = \expandafter{\lastnode}%
+      \edef\temp{\write\tocfile{\realbackslash #1entry{\the\toks0}{#3}%
+                               {\the\toks2}{\noexpand\folio}}}%
+      \temp
+    \fi
+  \fi
+  %
+  % Tell \shipout to create a pdf destination on each page, if we're
+  % writing pdf.  These are used in the table of contents.  We can't
+  % just write one on every page because the title pages are numbered
+  % 1 and 2 (the page numbers aren't printed), and so are the first
+  % two pages of the document.  Thus, we'd have two destinations named
+  % `1', and two named `2'.
+  \ifpdf \global\pdfmakepagedesttrue \fi
+}
+
+\newskip\contentsrightmargin \contentsrightmargin=1in
+\newcount\savepageno
+\newcount\lastnegativepageno \lastnegativepageno = -1
+
+% Prepare to read what we've written to \tocfile.
+%
+\def\startcontents#1{%
+  % If @setchapternewpage on, and @headings double, the contents should
+  % start on an odd page, unlike chapters.  Thus, we maintain
+  % \contentsalignmacro in parallel with \pagealignmacro.
+  % From: Torbjorn Granlund <tege@matematik.su.se>
+  \contentsalignmacro
+  \immediate\closeout\tocfile
+  %
+  % Don't need to put `Contents' or `Short Contents' in the headline.
+  % It is abundantly clear what they are.
+  \def\thischapter{}%
+  \chapmacro{#1}{Yomitfromtoc}{}%
+  %
+  \savepageno = \pageno
+  \begingroup                  % Set up to handle contents files properly.
+    \catcode`\\=0  \catcode`\{=1  \catcode`\}=2  \catcode`\@=11
+    % We can't do this, because then an actual ^ in a section
+    % title fails, e.g., @chapter ^ -- exponentiation.  --karl, 9jul97.
+    %\catcode`\^=7 % to see ^^e4 as \"a etc. juha@piuha.ydi.vtt.fi
+    \raggedbottom             % Worry more about breakpoints than the bottom.
+    \advance\hsize by -\contentsrightmargin % Don't use the full line length.
+    %
+    % Roman numerals for page numbers.
+    \ifnum \pageno>0 \global\pageno = \lastnegativepageno \fi
+}
+
+
+% Normal (long) toc.
+\def\contents{%
+  \startcontents{\putwordTOC}%
+    \openin 1 \jobname.toc
+    \ifeof 1 \else
+      \input \jobname.toc
+    \fi
+    \vfill \eject
+    \contentsalignmacro % in case @setchapternewpage odd is in effect
+    \ifeof 1 \else
+      \pdfmakeoutlines
+    \fi
+    \closein 1
+  \endgroup
+  \lastnegativepageno = \pageno
+  \global\pageno = \savepageno
+}
+
+% And just the chapters.
+\def\summarycontents{%
+  \startcontents{\putwordShortTOC}%
+    %
+    \let\numchapentry = \shortchapentry
+    \let\appentry = \shortchapentry
+    \let\unnchapentry = \shortunnchapentry
+    % We want a true roman here for the page numbers.
+    \secfonts
+    \let\rm=\shortcontrm \let\bf=\shortcontbf
+    \let\sl=\shortcontsl \let\tt=\shortconttt
+    \rm
+    \hyphenpenalty = 10000
+    \advance\baselineskip by 1pt % Open it up a little.
+    \def\numsecentry##1##2##3##4{}
+    \let\appsecentry = \numsecentry
+    \let\unnsecentry = \numsecentry
+    \let\numsubsecentry = \numsecentry
+    \let\appsubsecentry = \numsecentry
+    \let\unnsubsecentry = \numsecentry
+    \let\numsubsubsecentry = \numsecentry
+    \let\appsubsubsecentry = \numsecentry
+    \let\unnsubsubsecentry = \numsecentry
+    \openin 1 \jobname.toc
+    \ifeof 1 \else
+      \input \jobname.toc
+    \fi
+    \closein 1
+    \vfill \eject
+    \contentsalignmacro % in case @setchapternewpage odd is in effect
+  \endgroup
+  \lastnegativepageno = \pageno
+  \global\pageno = \savepageno
+}
+\let\shortcontents = \summarycontents
+
+% Typeset the label for a chapter or appendix for the short contents.
+% The arg is, e.g., `A' for an appendix, or `3' for a chapter.
+%
+\def\shortchaplabel#1{%
+  % This space should be enough, since a single number is .5em, and the
+  % widest letter (M) is 1em, at least in the Computer Modern fonts.
+  % But use \hss just in case.
+  % (This space doesn't include the extra space that gets added after
+  % the label; that gets put in by \shortchapentry above.)
+  %
+  % We'd like to right-justify chapter numbers, but that looks strange
+  % with appendix letters.  And right-justifying numbers and
+  % left-justifying letters looks strange when there is less than 10
+  % chapters.  Have to read the whole toc once to know how many chapters
+  % there are before deciding ...
+  \hbox to 1em{#1\hss}%
+}
+
+% These macros generate individual entries in the table of contents.
+% The first argument is the chapter or section name.
+% The last argument is the page number.
+% The arguments in between are the chapter number, section number, ...
+
+% Chapters, in the main contents.
+\def\numchapentry#1#2#3#4{\dochapentry{#2\labelspace#1}{#4}}
+%
+% Chapters, in the short toc.
+% See comments in \dochapentry re vbox and related settings.
+\def\shortchapentry#1#2#3#4{%
+  \tocentry{\shortchaplabel{#2}\labelspace #1}{\doshortpageno\bgroup#4\egroup}%
+}
+
+% Appendices, in the main contents.
+% Need the word Appendix, and a fixed-size box.
+%
+\def\appendixbox#1{%
+  % We use M since it's probably the widest letter.
+  \setbox0 = \hbox{\putwordAppendix{} M}%
+  \hbox to \wd0{\putwordAppendix{} #1\hss}}
+%
+\def\appentry#1#2#3#4{\dochapentry{\appendixbox{#2}\labelspace#1}{#4}}
+
+% Unnumbered chapters.
+\def\unnchapentry#1#2#3#4{\dochapentry{#1}{#4}}
+\def\shortunnchapentry#1#2#3#4{\tocentry{#1}{\doshortpageno\bgroup#4\egroup}}
+
+% Sections.
+\def\numsecentry#1#2#3#4{\dosecentry{#2\labelspace#1}{#4}}
+\let\appsecentry=\numsecentry
+\def\unnsecentry#1#2#3#4{\dosecentry{#1}{#4}}
+
+% Subsections.
+\def\numsubsecentry#1#2#3#4{\dosubsecentry{#2\labelspace#1}{#4}}
+\let\appsubsecentry=\numsubsecentry
+\def\unnsubsecentry#1#2#3#4{\dosubsecentry{#1}{#4}}
+
+% And subsubsections.
+\def\numsubsubsecentry#1#2#3#4{\dosubsubsecentry{#2\labelspace#1}{#4}}
+\let\appsubsubsecentry=\numsubsubsecentry
+\def\unnsubsubsecentry#1#2#3#4{\dosubsubsecentry{#1}{#4}}
+
+% This parameter controls the indentation of the various levels.
+% Same as \defaultparindent.
+\newdimen\tocindent \tocindent = 15pt
+
+% Now for the actual typesetting. In all these, #1 is the text and #2 is the
+% page number.
+%
+% If the toc has to be broken over pages, we want it to be at chapters
+% if at all possible; hence the \penalty.
+\def\dochapentry#1#2{%
+   \penalty-300 \vskip1\baselineskip plus.33\baselineskip minus.25\baselineskip
+   \begingroup
+     \chapentryfonts
+     \tocentry{#1}{\dopageno\bgroup#2\egroup}%
+   \endgroup
+   \nobreak\vskip .25\baselineskip plus.1\baselineskip
+}
+
+\def\dosecentry#1#2{\begingroup
+  \secentryfonts \leftskip=\tocindent
+  \tocentry{#1}{\dopageno\bgroup#2\egroup}%
+\endgroup}
+
+\def\dosubsecentry#1#2{\begingroup
+  \subsecentryfonts \leftskip=2\tocindent
+  \tocentry{#1}{\dopageno\bgroup#2\egroup}%
+\endgroup}
+
+\def\dosubsubsecentry#1#2{\begingroup
+  \subsubsecentryfonts \leftskip=3\tocindent
+  \tocentry{#1}{\dopageno\bgroup#2\egroup}%
+\endgroup}
+
+% We use the same \entry macro as for the index entries.
+\let\tocentry = \entry
+
+% Space between chapter (or whatever) number and the title.
+\def\labelspace{\hskip1em \relax}
+
+\def\dopageno#1{{\rm #1}}
+\def\doshortpageno#1{{\rm #1}}
+
+\def\chapentryfonts{\secfonts \rm}
+\def\secentryfonts{\textfonts}
+\def\subsecentryfonts{\textfonts}
+\def\subsubsecentryfonts{\textfonts}
+
+
+\message{environments,}
+% @foo ... @end foo.
+
+% @point{}, @result{}, @expansion{}, @print{}, @equiv{}.
+%
+% Since these characters are used in examples, it should be an even number of
+% \tt widths. Each \tt character is 1en, so two makes it 1em.
+%
+\def\point{$\star$}
+\def\result{\leavevmode\raise.15ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
+\def\expansion{\leavevmode\raise.1ex\hbox to 1em{\hfil$\mapsto$\hfil}}
+\def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
+\def\equiv{\leavevmode\lower.1ex\hbox to 1em{\hfil$\ptexequiv$\hfil}}
+
+% The @error{} command.
+% Adapted from the TeXbook's \boxit.
+%
+\newbox\errorbox
+%
+{\tentt \global\dimen0 = 3em}% Width of the box.
+\dimen2 = .55pt % Thickness of rules
+% The text. (`r' is open on the right, `e' somewhat less so on the left.)
+\setbox0 = \hbox{\kern-.75pt \tensf error\kern-1.5pt}
+%
+\setbox\errorbox=\hbox to \dimen0{\hfil
+   \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
+   \advance\hsize by -2\dimen2 % Rules.
+   \vbox{%
+      \hrule height\dimen2
+      \hbox{\vrule width\dimen2 \kern3pt          % Space to left of text.
+         \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
+         \kern3pt\vrule width\dimen2}% Space to right.
+      \hrule height\dimen2}
+    \hfil}
+%
+\def\error{\leavevmode\lower.7ex\copy\errorbox}
+
+% @tex ... @end tex    escapes into raw Tex temporarily.
+% One exception: @ is still an escape character, so that @end tex works.
+% But \@ or @@ will get a plain tex @ character.
+
+\envdef\tex{%
+  \catcode `\\=0 \catcode `\{=1 \catcode `\}=2
+  \catcode `\$=3 \catcode `\&=4 \catcode `\#=6
+  \catcode `\^=7 \catcode `\_=8 \catcode `\~=\active \let~=\tie
+  \catcode `\%=14
+  \catcode `\+=\other
+  \catcode `\"=\other
+  \catcode `\|=\other
+  \catcode `\<=\other
+  \catcode `\>=\other
+  \escapechar=`\\
+  %
+  \let\b=\ptexb
+  \let\bullet=\ptexbullet
+  \let\c=\ptexc
+  \let\,=\ptexcomma
+  \let\.=\ptexdot
+  \let\dots=\ptexdots
+  \let\equiv=\ptexequiv
+  \let\!=\ptexexclam
+  \let\i=\ptexi
+  \let\indent=\ptexindent
+  \let\noindent=\ptexnoindent
+  \let\{=\ptexlbrace
+  \let\+=\tabalign
+  \let\}=\ptexrbrace
+  \let\/=\ptexslash
+  \let\*=\ptexstar
+  \let\t=\ptext
+  %
+  \def\endldots{\mathinner{\ldots\ldots\ldots\ldots}}%
+  \def\enddots{\relax\ifmmode\endldots\else$\mathsurround=0pt \endldots\,$\fi}%
+  \def\@{@}%
+}
+% There is no need to define \Etex.
+
+% Define @lisp ... @end lisp.
+% @lisp environment forms a group so it can rebind things,
+% including the definition of @end lisp (which normally is erroneous).
+
+% Amount to narrow the margins by for @lisp.
+\newskip\lispnarrowing \lispnarrowing=0.4in
+
+% This is the definition that ^^M gets inside @lisp, @example, and other
+% such environments.  \null is better than a space, since it doesn't
+% have any width.
+\def\lisppar{\null\endgraf}
+
+% This space is always present above and below environments.
+\newskip\envskipamount \envskipamount = 0pt
+
+% Make spacing and below environment symmetrical.  We use \parskip here
+% to help in doing that, since in @example-like environments \parskip
+% is reset to zero; thus the \afterenvbreak inserts no space -- but the
+% start of the next paragraph will insert \parskip.
+%
+\def\aboveenvbreak{{%
+  % =10000 instead of <10000 because of a special case in \itemzzz and
+  % \sectionheading, q.v.
+  \ifnum \lastpenalty=10000 \else
+    \advance\envskipamount by \parskip
+    \endgraf
+    \ifdim\lastskip<\envskipamount
+      \removelastskip
+      % it's not a good place to break if the last penalty was \nobreak
+      % or better ...
+      \ifnum\lastpenalty<10000 \penalty-50 \fi
+      \vskip\envskipamount
+    \fi
+  \fi
+}}
+
+\let\afterenvbreak = \aboveenvbreak
+
+% \nonarrowing is a flag.  If "set", @lisp etc don't narrow margins.
+\let\nonarrowing=\relax
+
+% @cartouche ... @end cartouche: draw rectangle w/rounded corners around
+% environment contents.
+\font\circle=lcircle10
+\newdimen\circthick
+\newdimen\cartouter\newdimen\cartinner
+\newskip\normbskip\newskip\normpskip\newskip\normlskip
+\circthick=\fontdimen8\circle
+%
+\def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth
+\def\ctr{{\hskip 6pt\circle\char'010}}
+\def\cbl{{\circle\char'012\hskip -6pt}}
+\def\cbr{{\hskip 6pt\circle\char'011}}
+\def\carttop{\hbox to \cartouter{\hskip\lskip
+        \ctl\leaders\hrule height\circthick\hfil\ctr
+        \hskip\rskip}}
+\def\cartbot{\hbox to \cartouter{\hskip\lskip
+        \cbl\leaders\hrule height\circthick\hfil\cbr
+        \hskip\rskip}}
+%
+\newskip\lskip\newskip\rskip
+
+\envdef\cartouche{%
+  \ifhmode\par\fi  % can't be in the midst of a paragraph.
+  \startsavinginserts
+  \lskip=\leftskip \rskip=\rightskip
+  \leftskip=0pt\rightskip=0pt % we want these *outside*.
+  \cartinner=\hsize \advance\cartinner by-\lskip
+  \advance\cartinner by-\rskip
+  \cartouter=\hsize
+  \advance\cartouter by 18.4pt	% allow for 3pt kerns on either
+				% side, and for 6pt waste from
+				% each corner char, and rule thickness
+  \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
+  % Flag to tell @lisp, etc., not to narrow margin.
+  \let\nonarrowing=\comment
+  \vbox\bgroup
+      \baselineskip=0pt\parskip=0pt\lineskip=0pt
+      \carttop
+      \hbox\bgroup
+	  \hskip\lskip
+	  \vrule\kern3pt
+	  \vbox\bgroup
+	      \kern3pt
+	      \hsize=\cartinner
+	      \baselineskip=\normbskip
+	      \lineskip=\normlskip
+	      \parskip=\normpskip
+	      \vskip -\parskip
+	      \comment % For explanation, see the end of \def\group.
+}
+\def\Ecartouche{%
+              \ifhmode\par\fi
+	      \kern3pt
+	  \egroup
+	  \kern3pt\vrule
+	  \hskip\rskip
+      \egroup
+      \cartbot
+  \egroup
+  \checkinserts
+}
+
+
+% This macro is called at the beginning of all the @example variants,
+% inside a group.
+\def\nonfillstart{%
+  \aboveenvbreak
+  \hfuzz = 12pt % Don't be fussy
+  \sepspaces % Make spaces be word-separators rather than space tokens.
+  \let\par = \lisppar % don't ignore blank lines
+  \obeylines % each line of input is a line of output
+  \parskip = 0pt
+  \parindent = 0pt
+  \emergencystretch = 0pt % don't try to avoid overfull boxes
+  % @cartouche defines \nonarrowing to inhibit narrowing
+  % at next level down.
+  \ifx\nonarrowing\relax
+    \advance \leftskip by \lispnarrowing
+    \exdentamount=\lispnarrowing
+  \fi
+  \let\exdent=\nofillexdent
+}
+
+% If you want all examples etc. small: @set dispenvsize small.
+% If you want even small examples the full size: @set dispenvsize nosmall.
+% This affects the following displayed environments:
+%    @example, @display, @format, @lisp
+%
+\def\smallword{small}
+\def\nosmallword{nosmall}
+\let\SETdispenvsize\relax
+\def\setnormaldispenv{%
+  \ifx\SETdispenvsize\smallword
+    \smallexamplefonts \rm
+  \fi
+}
+\def\setsmalldispenv{%
+  \ifx\SETdispenvsize\nosmallword
+  \else
+    \smallexamplefonts \rm
+  \fi
+}
+
+% We often define two environments, @foo and @smallfoo.
+% Let's do it by one command:
+\def\makedispenv #1#2{
+  \expandafter\envdef\csname#1\endcsname {\setnormaldispenv #2}
+  \expandafter\envdef\csname small#1\endcsname {\setsmalldispenv #2}
+  \expandafter\let\csname E#1\endcsname \afterenvbreak
+  \expandafter\let\csname Esmall#1\endcsname \afterenvbreak
+}
+
+% Define two synonyms:
+\def\maketwodispenvs #1#2#3{
+  \makedispenv{#1}{#3}
+  \makedispenv{#2}{#3}
+}
+
+% @lisp: indented, narrowed, typewriter font; @example: same as @lisp.
+%
+% @smallexample and @smalllisp: use smaller fonts.
+% Originally contributed by Pavel@xerox.
+%
+\maketwodispenvs {lisp}{example}{%
+  \nonfillstart
+  \tt
+  \let\kbdfont = \kbdexamplefont % Allow @kbd to do something special.
+  \gobble       % eat return
+}
+
+% @display/@smalldisplay: same as @lisp except keep current font.
+%
+\makedispenv {display}{%
+  \nonfillstart
+  \gobble
+}
+
+% @format/@smallformat: same as @display except don't narrow margins.
+%
+\makedispenv{format}{%
+  \let\nonarrowing = t%
+  \nonfillstart
+  \gobble
+}
+
+% @flushleft: same as @format, but doesn't obey \SETdispenvsize.
+\envdef\flushleft{%
+  \let\nonarrowing = t%
+  \nonfillstart
+  \gobble
+}
+\let\Eflushleft = \afterenvbreak
+
+% @flushright.
+%
+\envdef\flushright{%
+  \let\nonarrowing = t%
+  \nonfillstart
+  \advance\leftskip by 0pt plus 1fill
+  \gobble
+}
+\let\Eflushright = \afterenvbreak
+
+
+% @quotation does normal linebreaking (hence we can't use \nonfillstart)
+% and narrows the margins.  We keep \parskip nonzero in general, since
+% we're doing normal filling.  So, when using \aboveenvbreak and
+% \afterenvbreak, temporarily make \parskip 0.
+%
+\envdef\quotation{%
+  {\parskip=0pt \aboveenvbreak}% because \aboveenvbreak inserts \parskip
+  \parindent=0pt
+  %
+  % @cartouche defines \nonarrowing to inhibit narrowing at next level down.
+  \ifx\nonarrowing\relax
+    \advance\leftskip by \lispnarrowing
+    \advance\rightskip by \lispnarrowing
+    \exdentamount = \lispnarrowing
+    \let\nonarrowing = \relax
+  \fi
+  \parsearg\quotationlabel
+}
+
+% We have retained a nonzero parskip for the environment, since we're
+% doing normal filling.
+%
+\def\Equotation{%
+  \par
+  \ifx\quotationauthor\undefined\else
+    % indent a bit.
+    \leftline{\kern 2\leftskip \sl ---\quotationauthor}%
+  \fi
+  {\parskip=0pt \afterenvbreak}%
+}
+
+% If we're given an argument, typeset it in bold with a colon after.
+\def\quotationlabel#1{%
+  \def\temp{#1}%
+  \ifx\temp\empty \else
+    {\bf #1: }%
+  \fi
+}
+
+
+% LaTeX-like @verbatim...@end verbatim and @verb{<char>...<char>}
+% If we want to allow any <char> as delimiter,
+% we need the curly braces so that makeinfo sees the @verb command, eg:
+% `@verbx...x' would look like the '@verbx' command.  --janneke@gnu.org
+%
+% [Knuth]: Donald Ervin Knuth, 1996.  The TeXbook.
+%
+% [Knuth] p.344; only we need to do the other characters Texinfo sets
+% active too.  Otherwise, they get lost as the first character on a
+% verbatim line.
+\def\dospecials{%
+  \do\ \do\\\do\{\do\}\do\$\do\&%
+  \do\#\do\^\do\^^K\do\_\do\^^A\do\%\do\~%
+  \do\<\do\>\do\|\do\@\do+\do\"%
+}
+%
+% [Knuth] p. 380
+\def\uncatcodespecials{%
+  \def\do##1{\catcode`##1=\other}\dospecials}
+%
+% [Knuth] pp. 380,381,391
+% Disable Spanish ligatures ?` and !` of \tt font
+\begingroup
+  \catcode`\`=\active\gdef`{\relax\lq}
+\endgroup
+%
+% Setup for the @verb command.
+%
+% Eight spaces for a tab
+\begingroup
+  \catcode`\^^I=\active
+  \gdef\tabeightspaces{\catcode`\^^I=\active\def^^I{\ \ \ \ \ \ \ \ }}
+\endgroup
+%
+\def\setupverb{%
+  \tt  % easiest (and conventionally used) font for verbatim
+  \def\par{\leavevmode\endgraf}%
+  \catcode`\`=\active
+  \tabeightspaces
+  % Respect line breaks,
+  % print special symbols as themselves, and
+  % make each space count
+  % must do in this order:
+  \obeylines \uncatcodespecials \sepspaces
+}
+
+% Setup for the @verbatim environment
+%
+% Real tab expansion
+\newdimen\tabw \setbox0=\hbox{\tt\space} \tabw=8\wd0 % tab amount
+%
+\def\starttabbox{\setbox0=\hbox\bgroup}
+\begingroup
+  \catcode`\^^I=\active
+  \gdef\tabexpand{%
+    \catcode`\^^I=\active
+    \def^^I{\leavevmode\egroup
+      \dimen0=\wd0 % the width so far, or since the previous tab
+      \divide\dimen0 by\tabw
+      \multiply\dimen0 by\tabw % compute previous multiple of \tabw
+      \advance\dimen0 by\tabw  % advance to next multiple of \tabw
+      \wd0=\dimen0 \box0 \starttabbox
+    }%
+  }
+\endgroup
+\def\setupverbatim{%
+  \nonfillstart
+  \advance\leftskip by -\defbodyindent
+  % Easiest (and conventionally used) font for verbatim
+  \tt
+  \def\par{\leavevmode\egroup\box0\endgraf}%
+  \catcode`\`=\active
+  \tabexpand
+  % Respect line breaks,
+  % print special symbols as themselves, and
+  % make each space count
+  % must do in this order:
+  \obeylines \uncatcodespecials \sepspaces
+  \everypar{\starttabbox}%
+}
+
+% Do the @verb magic: verbatim text is quoted by unique
+% delimiter characters.  Before first delimiter expect a
+% right brace, after last delimiter expect closing brace:
+%
+%    \def\doverb'{'<char>#1<char>'}'{#1}
+%
+% [Knuth] p. 382; only eat outer {}
+\begingroup
+  \catcode`[=1\catcode`]=2\catcode`\{=\other\catcode`\}=\other
+  \gdef\doverb{#1[\def\next##1#1}[##1\endgroup]\next]
+\endgroup
+%
+\def\verb{\begingroup\setupverb\doverb}
+%
+%
+% Do the @verbatim magic: define the macro \doverbatim so that
+% the (first) argument ends when '@end verbatim' is reached, ie:
+%
+%     \def\doverbatim#1@end verbatim{#1}
+%
+% For Texinfo it's a lot easier than for LaTeX,
+% because texinfo's \verbatim doesn't stop at '\end{verbatim}':
+% we need not redefine '\', '{' and '}'.
+%
+% Inspired by LaTeX's verbatim command set [latex.ltx]
+%
+\begingroup
+  \catcode`\ =\active
+  \obeylines %
+  % ignore everything up to the first ^^M, that's the newline at the end
+  % of the @verbatim input line itself.  Otherwise we get an extra blank
+  % line in the output.
+  \xdef\doverbatim#1^^M#2@end verbatim{#2\noexpand\end\gobble verbatim}%
+  % We really want {...\end verbatim} in the body of the macro, but
+  % without the active space; thus we have to use \xdef and \gobble.
+\endgroup
+%
+\envdef\verbatim{%
+    \setupverbatim\doverbatim
+}
+\let\Everbatim = \afterenvbreak
+
+
+% @verbatiminclude FILE - insert text of file in verbatim environment.
+%
+\def\verbatiminclude{\parseargusing\filenamecatcodes\doverbatiminclude}
+%
+\def\doverbatiminclude#1{%
+  {%
+    \makevalueexpandable
+    \setupverbatim
+    \input #1
+    \afterenvbreak
+  }%
+}
+
+% @copying ... @end copying.
+% Save the text away for @insertcopying later.
+%
+% We save the uninterpreted tokens, rather than creating a box.
+% Saving the text in a box would be much easier, but then all the
+% typesetting commands (@smallbook, font changes, etc.) have to be done
+% beforehand -- and a) we want @copying to be done first in the source
+% file; b) letting users define the frontmatter in as flexible order as
+% possible is very desirable.
+%
+\def\copying{\checkenv{}\begingroup\scanargctxt\docopying}
+\def\docopying#1@end copying{\endgroup\def\copyingtext{#1}}
+%
+\def\insertcopying{%
+  \begingroup
+    \parindent = 0pt  % paragraph indentation looks wrong on title page
+    \scanexp\copyingtext
+  \endgroup
+}
+
+\message{defuns,}
+% @defun etc.
+
+\newskip\defbodyindent \defbodyindent=.4in
+\newskip\defargsindent \defargsindent=50pt
+\newskip\deflastargmargin \deflastargmargin=18pt
+
+% Start the processing of @deffn:
+\def\startdefun{%
+  \ifnum\lastpenalty<10000
+    \medbreak
+  \else
+    % If there are two @def commands in a row, we'll have a \nobreak,
+    % which is there to keep the function description together with its
+    % header.  But if there's nothing but headers, we need to allow a
+    % break somewhere.  Check specifically for penalty 10002, inserted
+    % by \defargscommonending, instead of 10000, since the sectioning
+    % commands also insert a nobreak penalty, and we don't want to allow
+    % a break between a section heading and a defun.
+    % 
+    \ifnum\lastpenalty=10002 \penalty2000 \fi
+    %
+    % Similarly, after a section heading, do not allow a break.
+    % But do insert the glue.
+    \medskip  % preceded by discardable penalty, so not a breakpoint
+  \fi
+  %
+  \parindent=0in
+  \advance\leftskip by \defbodyindent
+  \exdentamount=\defbodyindent
+}
+
+\def\dodefunx#1{%
+  % First, check whether we are in the right environment:
+  \checkenv#1%
+  %
+  % As above, allow line break if we have multiple x headers in a row.
+  % It's not a great place, though.
+  \ifnum\lastpenalty=10002 \penalty3000 \fi
+  %
+  % And now, it's time to reuse the body of the original defun:
+  \expandafter\gobbledefun#1%
+}
+\def\gobbledefun#1\startdefun{}
+
+% \printdefunline \deffnheader{text}
+%
+\def\printdefunline#1#2{%
+  \begingroup
+    % call \deffnheader:
+    #1#2 \endheader
+    % common ending:
+    \interlinepenalty = 10000
+    \advance\rightskip by 0pt plus 1fil
+    \endgraf
+    \nobreak\vskip -\parskip
+    \penalty 10002  % signal to \startdefun and \dodefunx
+    % Some of the @defun-type tags do not enable magic parentheses,
+    % rendering the following check redundant.  But we don't optimize.
+    \checkparencounts
+  \endgroup
+}
+
+\def\Edefun{\endgraf\medbreak}
+
+% \makedefun{deffn} creates \deffn, \deffnx and \Edeffn;
+% the only thing remainnig is to define \deffnheader.
+%
+\def\makedefun#1{%
+  \expandafter\let\csname E#1\endcsname = \Edefun
+  \edef\temp{\noexpand\domakedefun
+    \makecsname{#1}\makecsname{#1x}\makecsname{#1header}}%
+  \temp
+}
+
+% \domakedefun \deffn \deffnx \deffnheader
+%
+% Define \deffn and \deffnx, without parameters.
+% \deffnheader has to be defined explicitly.
+%
+\def\domakedefun#1#2#3{%
+  \envdef#1{%
+    \startdefun
+    \parseargusing\activeparens{\printdefunline#3}%
+  }%
+  \def#2{\dodefunx#1}%
+  \def#3%
+}
+
+%%% Untyped functions:
+
+% @deffn category name args
+\makedefun{deffn}{\deffngeneral{}}
+
+% @deffn category class name args
+\makedefun{defop}#1 {\defopon{#1\ \putwordon}}
+
+% \defopon {category on}class name args
+\def\defopon#1#2 {\deffngeneral{\putwordon\ \code{#2}}{#1\ \code{#2}} }
+
+% \deffngeneral {subind}category name args
+%
+\def\deffngeneral#1#2 #3 #4\endheader{%
+  % Remember that \dosubind{fn}{foo}{} is equivalent to \doind{fn}{foo}.
+  \dosubind{fn}{\code{#3}}{#1}%
+  \defname{#2}{}{#3}\magicamp\defunargs{#4\unskip}%
+}
+
+%%% Typed functions:
+
+% @deftypefn category type name args
+\makedefun{deftypefn}{\deftypefngeneral{}}
+
+% @deftypeop category class type name args
+\makedefun{deftypeop}#1 {\deftypeopon{#1\ \putwordon}}
+
+% \deftypeopon {category on}class type name args
+\def\deftypeopon#1#2 {\deftypefngeneral{\putwordon\ \code{#2}}{#1\ \code{#2}} }
+
+% \deftypefngeneral {subind}category type name args
+%
+\def\deftypefngeneral#1#2 #3 #4 #5\endheader{%
+  \dosubind{fn}{\code{#4}}{#1}%
+  \defname{#2}{#3}{#4}\defunargs{#5\unskip}%
+}
+
+%%% Typed variables:
+
+% @deftypevr category type var args
+\makedefun{deftypevr}{\deftypecvgeneral{}}
+
+% @deftypecv category class type var args
+\makedefun{deftypecv}#1 {\deftypecvof{#1\ \putwordof}}
+
+% \deftypecvof {category of}class type var args
+\def\deftypecvof#1#2 {\deftypecvgeneral{\putwordof\ \code{#2}}{#1\ \code{#2}} }
+
+% \deftypecvgeneral {subind}category type var args
+%
+\def\deftypecvgeneral#1#2 #3 #4 #5\endheader{%
+  \dosubind{vr}{\code{#4}}{#1}%
+  \defname{#2}{#3}{#4}\defunargs{#5\unskip}%
+}
+
+%%% Untyped variables:
+
+% @defvr category var args
+\makedefun{defvr}#1 {\deftypevrheader{#1} {} }
+
+% @defcv category class var args
+\makedefun{defcv}#1 {\defcvof{#1\ \putwordof}}
+
+% \defcvof {category of}class var args
+\def\defcvof#1#2 {\deftypecvof{#1}#2 {} }
+
+%%% Type:
+% @deftp category name args
+\makedefun{deftp}#1 #2 #3\endheader{%
+  \doind{tp}{\code{#2}}%
+  \defname{#1}{}{#2}\defunargs{#3\unskip}%
+}
+
+% Remaining @defun-like shortcuts:
+\makedefun{defun}{\deffnheader{\putwordDeffunc} }
+\makedefun{defmac}{\deffnheader{\putwordDefmac} }
+\makedefun{defspec}{\deffnheader{\putwordDefspec} }
+\makedefun{deftypefun}{\deftypefnheader{\putwordDeffunc} }
+\makedefun{defvar}{\defvrheader{\putwordDefvar} }
+\makedefun{defopt}{\defvrheader{\putwordDefopt} }
+\makedefun{deftypevar}{\deftypevrheader{\putwordDefvar} }
+\makedefun{defmethod}{\defopon\putwordMethodon}
+\makedefun{deftypemethod}{\deftypeopon\putwordMethodon}
+\makedefun{defivar}{\defcvof\putwordInstanceVariableof}
+\makedefun{deftypeivar}{\deftypecvof\putwordInstanceVariableof}
+
+% \defname, which formats the name of the @def (not the args).
+% #1 is the category, such as "Function".
+% #2 is the return type, if any.
+% #3 is the function name.
+%
+% We are followed by (but not passed) the arguments, if any.
+%
+\def\defname#1#2#3{%
+  % Get the values of \leftskip and \rightskip as they were outside the @def...
+  \advance\leftskip by -\defbodyindent
+  %
+  % How we'll format the type name.  Putting it in brackets helps
+  % distinguish it from the body text that may end up on the next line
+  % just below it.
+  \def\temp{#1}%
+  \setbox0=\hbox{\kern\deflastargmargin \ifx\temp\empty\else [\rm\temp]\fi}
+  %
+  % Figure out line sizes for the paragraph shape.
+  % The first line needs space for \box0; but if \rightskip is nonzero,
+  % we need only space for the part of \box0 which exceeds it:
+  \dimen0=\hsize  \advance\dimen0 by -\wd0  \advance\dimen0 by \rightskip
+  % The continuations:
+  \dimen2=\hsize  \advance\dimen2 by -\defargsindent
+  % (plain.tex says that \dimen1 should be used only as global.)
+  \parshape 2 0in \dimen0 \defargsindent \dimen2
+  %
+  % Put the type name to the right margin.
+  \noindent
+  \hbox to 0pt{%
+    \hfil\box0 \kern-\hsize
+    % \hsize has to be shortened this way:
+    \kern\leftskip
+    % Intentionally do not respect \rightskip, since we need the space.
+  }%
+  %
+  % Allow all lines to be underfull without complaint:
+  \tolerance=10000 \hbadness=10000
+  \exdentamount=\defbodyindent
+  {%
+    % defun fonts. We use typewriter by default (used to be bold) because:
+    % . we're printing identifiers, they should be in tt in principle.
+    % . in languages with many accents, such as Czech or French, it's
+    %   common to leave accents off identifiers.  The result looks ok in
+    %   tt, but exceedingly strange in rm.
+    % . we don't want -- and --- to be treated as ligatures.
+    % . this still does not fix the ?` and !` ligatures, but so far no
+    %   one has made identifiers using them :).
+    \df \tt
+    \def\temp{#2}% return value type
+    \ifx\temp\empty\else \tclose{\temp} \fi
+    #3% output function name
+  }%
+  {\rm\enskip}% hskip 0.5 em of \tenrm
+  %
+  \boldbrax
+  % arguments will be output next, if any.
+}
+
+% Print arguments in slanted roman (not ttsl), inconsistently with using
+% tt for the name.  This is because literal text is sometimes needed in
+% the argument list (groff manual), and ttsl and tt are not very
+% distinguishable.  Prevent hyphenation at `-' chars.
+%
+\def\defunargs#1{%
+  % use sl by default (not ttsl),
+  % tt for the names.
+  \df \sl \hyphenchar\font=0
+  %
+  % On the other hand, if an argument has two dashes (for instance), we
+  % want a way to get ttsl.  Let's try @var for that.
+  \let\var=\ttslanted
+  #1%
+  \sl\hyphenchar\font=45
+}
+
+% We want ()&[] to print specially on the defun line.
+%
+\def\activeparens{%
+  \catcode`\(=\active \catcode`\)=\active
+  \catcode`\[=\active \catcode`\]=\active
+  \catcode`\&=\active
+}
+
+% Make control sequences which act like normal parenthesis chars.
+\let\lparen = ( \let\rparen = )
+
+% Be sure that we always have a definition for `(', etc.  For example,
+% if the fn name has parens in it, \boldbrax will not be in effect yet,
+% so TeX would otherwise complain about undefined control sequence.
+{
+  \activeparens
+  \global\let(=\lparen \global\let)=\rparen
+  \global\let[=\lbrack \global\let]=\rbrack
+  \global\let& = \&
+
+  \gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
+  \gdef\magicamp{\let&=\amprm}
+}
+
+\newcount\parencount
+
+% If we encounter &foo, then turn on ()-hacking afterwards
+\newif\ifampseen
+\def\amprm#1 {\ampseentrue{\bf\&#1 }}
+
+\def\parenfont{%
+  \ifampseen
+    % At the first level, print parens in roman,
+    % otherwise use the default font.
+    \ifnum \parencount=1 \rm \fi
+  \else
+    % The \sf parens (in \boldbrax) actually are a little bolder than
+    % the contained text.  This is especially needed for [ and ] .
+    \sf
+  \fi
+}
+\def\infirstlevel#1{%
+  \ifampseen
+    \ifnum\parencount=1
+      #1%
+    \fi
+  \fi
+}
+\def\bfafterword#1 {#1 \bf}
+
+\def\opnr{%
+  \global\advance\parencount by 1
+  {\parenfont(}%
+  \infirstlevel \bfafterword
+}
+\def\clnr{%
+  {\parenfont)}%
+  \infirstlevel \sl
+  \global\advance\parencount by -1
+}
+
+\newcount\brackcount
+\def\lbrb{%
+  \global\advance\brackcount by 1
+  {\bf[}%
+}
+\def\rbrb{%
+  {\bf]}%
+  \global\advance\brackcount by -1
+}
+
+\def\checkparencounts{%
+  \ifnum\parencount=0 \else \badparencount \fi
+  \ifnum\brackcount=0 \else \badbrackcount \fi
+}
+\def\badparencount{%
+  \errmessage{Unbalanced parentheses in @def}%
+  \global\parencount=0
+}
+\def\badbrackcount{%
+  \errmessage{Unbalanced square braces in @def}%
+  \global\brackcount=0
+}
+
+
+\message{macros,}
+% @macro.
+
+% To do this right we need a feature of e-TeX, \scantokens,
+% which we arrange to emulate with a temporary file in ordinary TeX.
+\ifx\eTeXversion\undefined
+  \newwrite\macscribble
+  \def\scantokens#1{%
+    \toks0={#1}%
+    \immediate\openout\macscribble=\jobname.tmp
+    \immediate\write\macscribble{\the\toks0}%
+    \immediate\closeout\macscribble
+    \input \jobname.tmp
+  }
+\fi
+
+\def\scanmacro#1{%
+  \begingroup
+    \newlinechar`\^^M
+    \let\xeatspaces\eatspaces
+    % Undo catcode changes of \startcontents and \doprintindex
+    \catcode`\@=0 \catcode`\\=\other \escapechar=`\@
+    % ... and \example
+    \spaceisspace
+    %
+    % Append \endinput to make sure that TeX does not see the ending newline.
+    %
+    % I've verified that it is necessary both for e-TeX and for ordinary TeX
+    %							--kasal, 29nov03
+    \scantokens{#1\endinput}%
+  \endgroup
+}
+
+\def\scanexp#1{%
+  \edef\temp{\noexpand\scanmacro{#1}}%
+  \temp
+}
+
+\newcount\paramno   % Count of parameters
+\newtoks\macname    % Macro name
+\newif\ifrecursive  % Is it recursive?
+\def\macrolist{}    % List of all defined macros in the form
+                    % \do\macro1\do\macro2...
+
+% Utility routines.
+% This does \let #1 = #2, except with \csnames.
+\def\cslet#1#2{%
+\expandafter\expandafter
+\expandafter\let
+\expandafter\expandafter
+\csname#1\endcsname
+\csname#2\endcsname}
+
+% Trim leading and trailing spaces off a string.
+% Concepts from aro-bend problem 15 (see CTAN).
+{\catcode`\@=11
+\gdef\eatspaces #1{\expandafter\trim@\expandafter{#1 }}
+\gdef\trim@ #1{\trim@@ @#1 @ #1 @ @@}
+\gdef\trim@@ #1@ #2@ #3@@{\trim@@@\empty #2 @}
+\def\unbrace#1{#1}
+\unbrace{\gdef\trim@@@ #1 } #2@{#1}
+}
+
+% Trim a single trailing ^^M off a string.
+{\catcode`\^^M=\other \catcode`\Q=3%
+\gdef\eatcr #1{\eatcra #1Q^^MQ}%
+\gdef\eatcra#1^^MQ{\eatcrb#1Q}%
+\gdef\eatcrb#1Q#2Q{#1}%
+}
+
+% Macro bodies are absorbed as an argument in a context where
+% all characters are catcode 10, 11 or 12, except \ which is active
+% (as in normal texinfo). It is necessary to change the definition of \.
+
+% It's necessary to have hard CRs when the macro is executed. This is
+% done by  making ^^M (\endlinechar) catcode 12 when reading the macro
+% body, and then making it the \newlinechar in \scanmacro.
+
+\def\scanctxt{%
+  \catcode`\~=\other
+  \catcode`\^=\other
+  \catcode`\_=\other
+  \catcode`\|=\other
+  \catcode`\<=\other
+  \catcode`\>=\other
+  \catcode`\+=\other
+  \catcode`\@=\other
+}
+
+\def\scanargctxt{%
+  \scanctxt
+  \catcode`\\=\other
+  \catcode`\^^M=\other
+}
+
+\def\macrobodyctxt{%
+  \scanctxt
+  \catcode`\{=\other
+  \catcode`\}=\other
+  \catcode`\^^M=\other
+  \usembodybackslash
+}
+
+\def\macroargctxt{%
+  \scanctxt
+  \catcode`\\=\other
+}
+
+% \mbodybackslash is the definition of \ in @macro bodies.
+% It maps \foo\ => \csname macarg.foo\endcsname => #N
+% where N is the macro parameter number.
+% We define \csname macarg.\endcsname to be \realbackslash, so
+% \\ in macro replacement text gets you a backslash.
+
+{\catcode`@=0 @catcode`@\=@active
+ @gdef@usembodybackslash{@let\=@mbodybackslash}
+ @gdef@mbodybackslash#1\{@csname macarg.#1@endcsname}
+}
+\expandafter\def\csname macarg.\endcsname{\realbackslash}
+
+\def\macro{\recursivefalse\parsearg\macroxxx}
+\def\rmacro{\recursivetrue\parsearg\macroxxx}
+
+\def\macroxxx#1{%
+  \getargs{#1}%           now \macname is the macname and \argl the arglist
+  \ifx\argl\empty       % no arguments
+     \paramno=0%
+  \else
+     \expandafter\parsemargdef \argl;%
+  \fi
+  \if1\csname ismacro.\the\macname\endcsname
+     \message{Warning: redefining \the\macname}%
+  \else
+     \expandafter\ifx\csname \the\macname\endcsname \relax
+     \else \errmessage{Macro name \the\macname\space already defined}\fi
+     \global\cslet{macsave.\the\macname}{\the\macname}%
+     \global\expandafter\let\csname ismacro.\the\macname\endcsname=1%
+     % Add the macroname to \macrolist
+     \toks0 = \expandafter{\macrolist\do}%
+     \xdef\macrolist{\the\toks0
+       \expandafter\noexpand\csname\the\macname\endcsname}%
+  \fi
+  \begingroup \macrobodyctxt
+  \ifrecursive \expandafter\parsermacbody
+  \else \expandafter\parsemacbody
+  \fi}
+
+\parseargdef\unmacro{%
+  \if1\csname ismacro.#1\endcsname
+    \global\cslet{#1}{macsave.#1}%
+    \global\expandafter\let \csname ismacro.#1\endcsname=0%
+    % Remove the macro name from \macrolist:
+    \begingroup
+      \expandafter\let\csname#1\endcsname \relax
+      \let\do\unmacrodo
+      \xdef\macrolist{\macrolist}%
+    \endgroup
+  \else
+    \errmessage{Macro #1 not defined}%
+  \fi
+}
+
+% Called by \do from \dounmacro on each macro.  The idea is to omit any
+% macro definitions that have been changed to \relax.
+%
+\def\unmacrodo#1{%
+  \ifx#1\relax
+    % remove this
+  \else
+    \noexpand\do \noexpand #1%
+  \fi
+}
+
+% This makes use of the obscure feature that if the last token of a
+% <parameter list> is #, then the preceding argument is delimited by
+% an opening brace, and that opening brace is not consumed.
+\def\getargs#1{\getargsxxx#1{}}
+\def\getargsxxx#1#{\getmacname #1 \relax\getmacargs}
+\def\getmacname #1 #2\relax{\macname={#1}}
+\def\getmacargs#1{\def\argl{#1}}
+
+% Parse the optional {params} list.  Set up \paramno and \paramlist
+% so \defmacro knows what to do.  Define \macarg.blah for each blah
+% in the params list, to be ##N where N is the position in that list.
+% That gets used by \mbodybackslash (above).
+
+% We need to get `macro parameter char #' into several definitions.
+% The technique used is stolen from LaTeX:  let \hash be something
+% unexpandable, insert that wherever you need a #, and then redefine
+% it to # just before using the token list produced.
+%
+% The same technique is used to protect \eatspaces till just before
+% the macro is used.
+
+\def\parsemargdef#1;{\paramno=0\def\paramlist{}%
+        \let\hash\relax\let\xeatspaces\relax\parsemargdefxxx#1,;,}
+\def\parsemargdefxxx#1,{%
+  \if#1;\let\next=\relax
+  \else \let\next=\parsemargdefxxx
+    \advance\paramno by 1%
+    \expandafter\edef\csname macarg.\eatspaces{#1}\endcsname
+        {\xeatspaces{\hash\the\paramno}}%
+    \edef\paramlist{\paramlist\hash\the\paramno,}%
+  \fi\next}
+
+% These two commands read recursive and nonrecursive macro bodies.
+% (They're different since rec and nonrec macros end differently.)
+
+\long\def\parsemacbody#1@end macro%
+{\xdef\temp{\eatcr{#1}}\endgroup\defmacro}%
+\long\def\parsermacbody#1@end rmacro%
+{\xdef\temp{\eatcr{#1}}\endgroup\defmacro}%
+
+% This defines the macro itself. There are six cases: recursive and
+% nonrecursive macros of zero, one, and many arguments.
+% Much magic with \expandafter here.
+% \xdef is used so that macro definitions will survive the file
+% they're defined in; @include reads the file inside a group.
+\def\defmacro{%
+  \let\hash=##% convert placeholders to macro parameter chars
+  \ifrecursive
+    \ifcase\paramno
+    % 0
+      \expandafter\xdef\csname\the\macname\endcsname{%
+        \noexpand\scanmacro{\temp}}%
+    \or % 1
+      \expandafter\xdef\csname\the\macname\endcsname{%
+         \bgroup\noexpand\macroargctxt
+         \noexpand\braceorline
+         \expandafter\noexpand\csname\the\macname xxx\endcsname}%
+      \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
+         \egroup\noexpand\scanmacro{\temp}}%
+    \else % many
+      \expandafter\xdef\csname\the\macname\endcsname{%
+         \bgroup\noexpand\macroargctxt
+         \noexpand\csname\the\macname xx\endcsname}%
+      \expandafter\xdef\csname\the\macname xx\endcsname##1{%
+          \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}%
+      \expandafter\expandafter
+      \expandafter\xdef
+      \expandafter\expandafter
+        \csname\the\macname xxx\endcsname
+          \paramlist{\egroup\noexpand\scanmacro{\temp}}%
+    \fi
+  \else
+    \ifcase\paramno
+    % 0
+      \expandafter\xdef\csname\the\macname\endcsname{%
+        \noexpand\norecurse{\the\macname}%
+        \noexpand\scanmacro{\temp}\egroup}%
+    \or % 1
+      \expandafter\xdef\csname\the\macname\endcsname{%
+         \bgroup\noexpand\macroargctxt
+         \noexpand\braceorline
+         \expandafter\noexpand\csname\the\macname xxx\endcsname}%
+      \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
+        \egroup
+        \noexpand\norecurse{\the\macname}%
+        \noexpand\scanmacro{\temp}\egroup}%
+    \else % many
+      \expandafter\xdef\csname\the\macname\endcsname{%
+         \bgroup\noexpand\macroargctxt
+         \expandafter\noexpand\csname\the\macname xx\endcsname}%
+      \expandafter\xdef\csname\the\macname xx\endcsname##1{%
+          \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}%
+      \expandafter\expandafter
+      \expandafter\xdef
+      \expandafter\expandafter
+      \csname\the\macname xxx\endcsname
+      \paramlist{%
+          \egroup
+          \noexpand\norecurse{\the\macname}%
+          \noexpand\scanmacro{\temp}\egroup}%
+    \fi
+  \fi}
+
+\def\norecurse#1{\bgroup\cslet{#1}{macsave.#1}}
+
+% \braceorline decides whether the next nonwhitespace character is a
+% {.  If so it reads up to the closing }, if not, it reads the whole
+% line.  Whatever was read is then fed to the next control sequence
+% as an argument (by \parsebrace or \parsearg)
+\def\braceorline#1{\let\next=#1\futurelet\nchar\braceorlinexxx}
+\def\braceorlinexxx{%
+  \ifx\nchar\bgroup\else
+    \expandafter\parsearg
+  \fi \next}
+
+% We want to disable all macros during \shipout so that they are not
+% expanded by \write.
+\def\turnoffmacros{\begingroup \def\do##1{\let\noexpand##1=\relax}%
+  \edef\next{\macrolist}\expandafter\endgroup\next}
+
+% For \indexnofonts, we need to get rid of all macros, leaving only the
+% arguments (if present).  Of course this is not nearly correct, but it
+% is the best we can do for now.  makeinfo does not expand macros in the
+% argument to @deffn, which ends up writing an index entry, and texindex
+% isn't prepared for an index sort entry that starts with \.
+% 
+% Since macro invocations are followed by braces, we can just redefine them
+% to take a single TeX argument.  The case of a macro invocation that
+% goes to end-of-line is not handled.
+% 
+\def\emptyusermacros{\begingroup
+  \def\do##1{\let\noexpand##1=\noexpand\asis}%
+  \edef\next{\macrolist}\expandafter\endgroup\next}
+
+
+% @alias.
+% We need some trickery to remove the optional spaces around the equal
+% sign.  Just make them active and then expand them all to nothing.
+\def\alias{\parseargusing\obeyspaces\aliasxxx}
+\def\aliasxxx #1{\aliasyyy#1\relax}
+\def\aliasyyy #1=#2\relax{%
+  {%
+    \expandafter\let\obeyedspace=\empty
+    \xdef\next{\global\let\makecsname{#1}=\makecsname{#2}}%
+  }%
+  \next
+}
+
+
+\message{cross references,}
+
+\newwrite\auxfile
+
+\newif\ifhavexrefs    % True if xref values are known.
+\newif\ifwarnedxrefs  % True if we warned once that they aren't known.
+
+% @inforef is relatively simple.
+\def\inforef #1{\inforefzzz #1,,,,**}
+\def\inforefzzz #1,#2,#3,#4**{\putwordSee{} \putwordInfo{} \putwordfile{} \file{\ignorespaces #3{}},
+  node \samp{\ignorespaces#1{}}}
+
+% @node's only job in TeX is to define \lastnode, which is used in
+% cross-references.  The @node line might or might not have commas, and
+% might or might not have spaces before the first comma, like:
+% @node foo , bar , ...
+% We don't want such trailing spaces in the node name.
+%
+\parseargdef\node{\checkenv{}\donode #1 ,\finishnodeparse}
+%
+% also remove a trailing comma, in case of something like this:
+% @node Help-Cross,  ,  , Cross-refs
+\def\donode#1 ,#2\finishnodeparse{\dodonode #1,\finishnodeparse}
+\def\dodonode#1,#2\finishnodeparse{\gdef\lastnode{#1}}
+
+\let\nwnode=\node
+\let\lastnode=\empty
+
+% Write a cross-reference definition for the current node.  #1 is the
+% type (Ynumbered, Yappendix, Ynothing).
+%
+\def\donoderef#1{%
+  \ifx\lastnode\empty\else
+    \setref{\lastnode}{#1}%
+    \global\let\lastnode=\empty
+  \fi
+}
+
+% @anchor{NAME} -- define xref target at arbitrary point.
+%
+\newcount\savesfregister
+%
+\def\savesf{\relax \ifhmode \savesfregister=\spacefactor \fi}
+\def\restoresf{\relax \ifhmode \spacefactor=\savesfregister \fi}
+\def\anchor#1{\savesf \setref{#1}{Ynothing}\restoresf \ignorespaces}
+
+% \setref{NAME}{SNT} defines a cross-reference point NAME (a node or an
+% anchor), which consists of three parts:
+% 1) NAME-title - the current sectioning name taken from \thissection,
+%                 or the anchor name.
+% 2) NAME-snt   - section number and type, passed as the SNT arg, or
+%                 empty for anchors.
+% 3) NAME-pg    - the page number.
+%
+% This is called from \donoderef, \anchor, and \dofloat.  In the case of
+% floats, there is an additional part, which is not written here:
+% 4) NAME-lof   - the text as it should appear in a @listoffloats.
+%
+\def\setref#1#2{%
+  \pdfmkdest{#1}%
+  \iflinks
+    {%
+      \atdummies  % preserve commands, but don't expand them
+      \turnoffactive
+      \otherbackslash
+      \edef\writexrdef##1##2{%
+	\write\auxfile{@xrdef{#1-% #1 of \setref, expanded by the \edef
+	  ##1}{##2}}% these are parameters of \writexrdef
+      }%
+      \toks0 = \expandafter{\thissection}%
+      \immediate \writexrdef{title}{\the\toks0 }%
+      \immediate \writexrdef{snt}{\csname #2\endcsname}% \Ynumbered etc.
+      \writexrdef{pg}{\folio}% will be written later, during \shipout
+    }%
+  \fi
+}
+
+% @xref, @pxref, and @ref generate cross-references.  For \xrefX, #1 is
+% the node name, #2 the name of the Info cross-reference, #3 the printed
+% node name, #4 the name of the Info file, #5 the name of the printed
+% manual.  All but the node name can be omitted.
+%
+\def\pxref#1{\putwordsee{} \xrefX[#1,,,,,,,]}
+\def\xref#1{\putwordSee{} \xrefX[#1,,,,,,,]}
+\def\ref#1{\xrefX[#1,,,,,,,]}
+\def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup
+  \unsepspaces
+  \def\printedmanual{\ignorespaces #5}%
+  \def\printedrefname{\ignorespaces #3}%
+  \setbox1=\hbox{\printedmanual\unskip}%
+  \setbox0=\hbox{\printedrefname\unskip}%
+  \ifdim \wd0 = 0pt
+    % No printed node name was explicitly given.
+    \expandafter\ifx\csname SETxref-automatic-section-title\endcsname\relax
+      % Use the node name inside the square brackets.
+      \def\printedrefname{\ignorespaces #1}%
+    \else
+      % Use the actual chapter/section title appear inside
+      % the square brackets.  Use the real section title if we have it.
+      \ifdim \wd1 > 0pt
+        % It is in another manual, so we don't have it.
+        \def\printedrefname{\ignorespaces #1}%
+      \else
+        \ifhavexrefs
+          % We know the real title if we have the xref values.
+          \def\printedrefname{\refx{#1-title}{}}%
+        \else
+          % Otherwise just copy the Info node name.
+          \def\printedrefname{\ignorespaces #1}%
+        \fi%
+      \fi
+    \fi
+  \fi
+  %
+  % Make link in pdf output.
+  \ifpdf
+    \leavevmode
+    \getfilename{#4}%
+    {\turnoffactive \otherbackslash
+     \ifnum\filenamelength>0
+       \startlink attr{/Border [0 0 0]}%
+         goto file{\the\filename.pdf} name{#1}%
+     \else
+       \startlink attr{/Border [0 0 0]}%
+         goto name{\pdfmkpgn{#1}}%
+     \fi
+    }%
+    \linkcolor
+  \fi
+  %
+  % Float references are printed completely differently: "Figure 1.2"
+  % instead of "[somenode], p.3".  We distinguish them by the
+  % LABEL-title being set to a magic string.
+  {%
+    % Have to otherify everything special to allow the \csname to
+    % include an _ in the xref name, etc.
+    \indexnofonts
+    \turnoffactive
+    \otherbackslash
+    \expandafter\global\expandafter\let\expandafter\Xthisreftitle
+      \csname XR#1-title\endcsname
+  }%
+  \iffloat\Xthisreftitle
+    % If the user specified the print name (third arg) to the ref,
+    % print it instead of our usual "Figure 1.2".
+    \ifdim\wd0 = 0pt
+      \refx{#1-snt}%
+    \else
+      \printedrefname
+    \fi
+    %
+    % if the user also gave the printed manual name (fifth arg), append
+    % "in MANUALNAME".
+    \ifdim \wd1 > 0pt
+      \space \putwordin{} \cite{\printedmanual}%
+    \fi
+  \else
+    % node/anchor (non-float) references.
+    %
+    % If we use \unhbox0 and \unhbox1 to print the node names, TeX does not
+    % insert empty discretionaries after hyphens, which means that it will
+    % not find a line break at a hyphen in a node names.  Since some manuals
+    % are best written with fairly long node names, containing hyphens, this
+    % is a loss.  Therefore, we give the text of the node name again, so it
+    % is as if TeX is seeing it for the first time.
+    \ifdim \wd1 > 0pt
+      \putwordsection{} ``\printedrefname'' \putwordin{} \cite{\printedmanual}%
+    \else
+      % _ (for example) has to be the character _ for the purposes of the
+      % control sequence corresponding to the node, but it has to expand
+      % into the usual \leavevmode...\vrule stuff for purposes of
+      % printing. So we \turnoffactive for the \refx-snt, back on for the
+      % printing, back off for the \refx-pg.
+      {\turnoffactive \otherbackslash
+       % Only output a following space if the -snt ref is nonempty; for
+       % @unnumbered and @anchor, it won't be.
+       \setbox2 = \hbox{\ignorespaces \refx{#1-snt}{}}%
+       \ifdim \wd2 > 0pt \refx{#1-snt}\space\fi
+      }%
+      % output the `[mynode]' via a macro so it can be overridden.
+      \xrefprintnodename\printedrefname
+      %
+      % But we always want a comma and a space:
+      ,\space
+      %
+      % output the `page 3'.
+      \turnoffactive \otherbackslash \putwordpage\tie\refx{#1-pg}{}%
+    \fi
+  \fi
+  \endlink
+\endgroup}
+
+% This macro is called from \xrefX for the `[nodename]' part of xref
+% output.  It's a separate macro only so it can be changed more easily,
+% since square brackets don't work well in some documents.  Particularly
+% one that Bob is working on :).
+%
+\def\xrefprintnodename#1{[#1]}
+
+% Things referred to by \setref.
+%
+\def\Ynothing{}
+\def\Yomitfromtoc{}
+\def\Ynumbered{%
+  \ifnum\secno=0
+    \putwordChapter@tie \the\chapno
+  \else \ifnum\subsecno=0
+    \putwordSection@tie \the\chapno.\the\secno
+  \else \ifnum\subsubsecno=0
+    \putwordSection@tie \the\chapno.\the\secno.\the\subsecno
+  \else
+    \putwordSection@tie \the\chapno.\the\secno.\the\subsecno.\the\subsubsecno
+  \fi\fi\fi
+}
+\def\Yappendix{%
+  \ifnum\secno=0
+     \putwordAppendix@tie @char\the\appendixno{}%
+  \else \ifnum\subsecno=0
+     \putwordSection@tie @char\the\appendixno.\the\secno
+  \else \ifnum\subsubsecno=0
+    \putwordSection@tie @char\the\appendixno.\the\secno.\the\subsecno
+  \else
+    \putwordSection@tie
+      @char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno
+  \fi\fi\fi
+}
+
+% Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
+% If its value is nonempty, SUFFIX is output afterward.
+%
+\def\refx#1#2{%
+  {%
+    \indexnofonts
+    \otherbackslash
+    \expandafter\global\expandafter\let\expandafter\thisrefX
+      \csname XR#1\endcsname
+  }%
+  \ifx\thisrefX\relax
+    % If not defined, say something at least.
+    \angleleft un\-de\-fined\angleright
+    \iflinks
+      \ifhavexrefs
+        \message{\linenumber Undefined cross reference `#1'.}%
+      \else
+        \ifwarnedxrefs\else
+          \global\warnedxrefstrue
+          \message{Cross reference values unknown; you must run TeX again.}%
+        \fi
+      \fi
+    \fi
+  \else
+    % It's defined, so just use it.
+    \thisrefX
+  \fi
+  #2% Output the suffix in any case.
+}
+
+% This is the macro invoked by entries in the aux file.  Usually it's
+% just a \def (we prepend XR to the control sequence name to avoid
+% collisions).  But if this is a float type, we have more work to do.
+%
+\def\xrdef#1#2{%
+  \expandafter\gdef\csname XR#1\endcsname{#2}% remember this xref value.
+  %
+  % Was that xref control sequence that we just defined for a float?
+  \expandafter\iffloat\csname XR#1\endcsname
+    % it was a float, and we have the (safe) float type in \iffloattype.
+    \expandafter\let\expandafter\floatlist
+      \csname floatlist\iffloattype\endcsname
+    %
+    % Is this the first time we've seen this float type?
+    \expandafter\ifx\floatlist\relax
+      \toks0 = {\do}% yes, so just \do
+    \else
+      % had it before, so preserve previous elements in list.
+      \toks0 = \expandafter{\floatlist\do}%
+    \fi
+    %
+    % Remember this xref in the control sequence \floatlistFLOATTYPE,
+    % for later use in \listoffloats.
+    \expandafter\xdef\csname floatlist\iffloattype\endcsname{\the\toks0{#1}}%
+  \fi
+}
+
+% Read the last existing aux file, if any.  No error if none exists.
+%
+\def\tryauxfile{%
+  \openin 1 \jobname.aux
+  \ifeof 1 \else
+    \readauxfile
+    \global\havexrefstrue
+  \fi
+  \closein 1
+}
+
+\def\readauxfile{\begingroup
+  \catcode`\^^@=\other
+  \catcode`\^^A=\other
+  \catcode`\^^B=\other
+  \catcode`\^^C=\other
+  \catcode`\^^D=\other
+  \catcode`\^^E=\other
+  \catcode`\^^F=\other
+  \catcode`\^^G=\other
+  \catcode`\^^H=\other
+  \catcode`\^^K=\other
+  \catcode`\^^L=\other
+  \catcode`\^^N=\other
+  \catcode`\^^P=\other
+  \catcode`\^^Q=\other
+  \catcode`\^^R=\other
+  \catcode`\^^S=\other
+  \catcode`\^^T=\other
+  \catcode`\^^U=\other
+  \catcode`\^^V=\other
+  \catcode`\^^W=\other
+  \catcode`\^^X=\other
+  \catcode`\^^Z=\other
+  \catcode`\^^[=\other
+  \catcode`\^^\=\other
+  \catcode`\^^]=\other
+  \catcode`\^^^=\other
+  \catcode`\^^_=\other
+  % It was suggested to set the catcode of ^ to 7, which would allow ^^e4 etc.
+  % in xref tags, i.e., node names.  But since ^^e4 notation isn't
+  % supported in the main text, it doesn't seem desirable.  Furthermore,
+  % that is not enough: for node names that actually contain a ^
+  % character, we would end up writing a line like this: 'xrdef {'hat
+  % b-title}{'hat b} and \xrdef does a \csname...\endcsname on the first
+  % argument, and \hat is not an expandable control sequence.  It could
+  % all be worked out, but why?  Either we support ^^ or we don't.
+  %
+  % The other change necessary for this was to define \auxhat:
+  % \def\auxhat{\def^{'hat }}% extra space so ok if followed by letter
+  % and then to call \auxhat in \setq.
+  %
+  \catcode`\^=\other
+  %
+  % Special characters.  Should be turned off anyway, but...
+  \catcode`\~=\other
+  \catcode`\[=\other
+  \catcode`\]=\other
+  \catcode`\"=\other
+  \catcode`\_=\other
+  \catcode`\|=\other
+  \catcode`\<=\other
+  \catcode`\>=\other
+  \catcode`\$=\other
+  \catcode`\#=\other
+  \catcode`\&=\other
+  \catcode`\%=\other
+  \catcode`+=\other % avoid \+ for paranoia even though we've turned it off
+  %
+  % This is to support \ in node names and titles, since the \
+  % characters end up in a \csname.  It's easier than
+  % leaving it active and making its active definition an actual \
+  % character.  What I don't understand is why it works in the *value*
+  % of the xrdef.  Seems like it should be a catcode12 \, and that
+  % should not typeset properly.  But it works, so I'm moving on for
+  % now.  --karl, 15jan04.
+  \catcode`\\=\other
+  %
+  % Make the characters 128-255 be printing characters.
+  {%
+    \count 1=128
+    \def\loop{%
+      \catcode\count 1=\other
+      \advance\count 1 by 1
+      \ifnum \count 1<256 \loop \fi
+    }%
+  }%
+  %
+  % @ is our escape character in .aux files, and we need braces.
+  \catcode`\{=1
+  \catcode`\}=2
+  \catcode`\@=0
+  %
+  \input \jobname.aux
+\endgroup}
+
+
+\message{insertions,}
+% including footnotes.
+
+\newcount \footnoteno
+
+% The trailing space in the following definition for supereject is
+% vital for proper filling; pages come out unaligned when you do a
+% pagealignmacro call if that space before the closing brace is
+% removed. (Generally, numeric constants should always be followed by a
+% space to prevent strange expansion errors.)
+\def\supereject{\par\penalty -20000\footnoteno =0 }
+
+% @footnotestyle is meaningful for info output only.
+\let\footnotestyle=\comment
+
+{\catcode `\@=11
+%
+% Auto-number footnotes.  Otherwise like plain.
+\gdef\footnote{%
+  \let\indent=\ptexindent
+  \let\noindent=\ptexnoindent
+  \global\advance\footnoteno by \@ne
+  \edef\thisfootno{$^{\the\footnoteno}$}%
+  %
+  % In case the footnote comes at the end of a sentence, preserve the
+  % extra spacing after we do the footnote number.
+  \let\@sf\empty
+  \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\ptexslash\fi
+  %
+  % Remove inadvertent blank space before typesetting the footnote number.
+  \unskip
+  \thisfootno\@sf
+  \dofootnote
+}%
+
+% Don't bother with the trickery in plain.tex to not require the
+% footnote text as a parameter.  Our footnotes don't need to be so general.
+%
+% Oh yes, they do; otherwise, @ifset (and anything else that uses
+% \parseargline) fails inside footnotes because the tokens are fixed when
+% the footnote is read.  --karl, 16nov96.
+%
+\gdef\dofootnote{%
+  \insert\footins\bgroup
+  % We want to typeset this text as a normal paragraph, even if the
+  % footnote reference occurs in (for example) a display environment.
+  % So reset some parameters.
+  \hsize=\pagewidth
+  \interlinepenalty\interfootnotelinepenalty
+  \splittopskip\ht\strutbox % top baseline for broken footnotes
+  \splitmaxdepth\dp\strutbox
+  \floatingpenalty\@MM
+  \leftskip\z@skip
+  \rightskip\z@skip
+  \spaceskip\z@skip
+  \xspaceskip\z@skip
+  \parindent\defaultparindent
+  %
+  \smallfonts \rm
+  %
+  % Because we use hanging indentation in footnotes, a @noindent appears
+  % to exdent this text, so make it be a no-op.  makeinfo does not use
+  % hanging indentation so @noindent can still be needed within footnote
+  % text after an @example or the like (not that this is good style).
+  \let\noindent = \relax
+  %
+  % Hang the footnote text off the number.  Use \everypar in case the
+  % footnote extends for more than one paragraph.
+  \everypar = {\hang}%
+  \textindent{\thisfootno}%
+  %
+  % Don't crash into the line above the footnote text.  Since this
+  % expands into a box, it must come within the paragraph, lest it
+  % provide a place where TeX can split the footnote.
+  \footstrut
+  \futurelet\next\fo@t
+}
+}%end \catcode `\@=11
+
+% In case a @footnote appears in a vbox, save the footnote text and create
+% the real \insert just after the vbox finished.  Otherwise, the insertion
+% would be lost.
+% Similarily, if a @footnote appears inside an alignment, save the footnote
+% text to a box and make the \insert when a row of the table is finished.
+% And the same can be done for other insert classes.  --kasal, 16nov03.
+
+% Replace the \insert primitive by a cheating macro.
+% Deeper inside, just make sure that the saved insertions are not spilled
+% out prematurely.
+%
+\def\startsavinginserts{%
+  \ifx \insert\ptexinsert
+    \let\insert\saveinsert
+  \else
+    \let\checkinserts\relax
+  \fi
+}
+
+% This \insert replacement works for both \insert\footins{foo} and
+% \insert\footins\bgroup foo\egroup, but it doesn't work for \insert27{foo}.
+%
+\def\saveinsert#1{%
+  \edef\next{\noexpand\savetobox \makeSAVEname#1}%
+  \afterassignment\next
+  % swallow the left brace
+  \let\temp =
+}
+\def\makeSAVEname#1{\makecsname{SAVE\expandafter\gobble\string#1}}
+\def\savetobox#1{\global\setbox#1 = \vbox\bgroup \unvbox#1}
+
+\def\checksaveins#1{\ifvoid#1\else \placesaveins#1\fi}
+
+\def\placesaveins#1{%
+  \ptexinsert \csname\expandafter\gobblesave\string#1\endcsname
+    {\box#1}%
+}
+
+% eat @SAVE -- beware, all of them have catcode \other:
+{
+  \def\dospecials{\do S\do A\do V\do E} \uncatcodespecials  %  ;-)
+  \gdef\gobblesave @SAVE{}
+}
+
+% initialization:
+\def\newsaveins #1{%
+  \edef\next{\noexpand\newsaveinsX \makeSAVEname#1}%
+  \next
+}
+\def\newsaveinsX #1{%
+  \csname newbox\endcsname #1%
+  \expandafter\def\expandafter\checkinserts\expandafter{\checkinserts
+    \checksaveins #1}%
+}
+
+% initialize:
+\let\checkinserts\empty
+\newsaveins\footins
+\newsaveins\margin
+
+
+% @image.  We use the macros from epsf.tex to support this.
+% If epsf.tex is not installed and @image is used, we complain.
+%
+% Check for and read epsf.tex up front.  If we read it only at @image
+% time, we might be inside a group, and then its definitions would get
+% undone and the next image would fail.
+\openin 1 = epsf.tex
+\ifeof 1 \else
+  % Do not bother showing banner with epsf.tex v2.7k (available in
+  % doc/epsf.tex and on ctan).
+  \def\epsfannounce{\toks0 = }%
+  \input epsf.tex
+\fi
+\closein 1
+%
+% We will only complain once about lack of epsf.tex.
+\newif\ifwarnednoepsf
+\newhelp\noepsfhelp{epsf.tex must be installed for images to
+  work.  It is also included in the Texinfo distribution, or you can get
+  it from ftp://tug.org/tex/epsf.tex.}
+%
+\def\image#1{%
+  \ifx\epsfbox\undefined
+    \ifwarnednoepsf \else
+      \errhelp = \noepsfhelp
+      \errmessage{epsf.tex not found, images will be ignored}%
+      \global\warnednoepsftrue
+    \fi
+  \else
+    \imagexxx #1,,,,,\finish
+  \fi
+}
+%
+% Arguments to @image:
+% #1 is (mandatory) image filename; we tack on .eps extension.
+% #2 is (optional) width, #3 is (optional) height.
+% #4 is (ignored optional) html alt text.
+% #5 is (ignored optional) extension.
+% #6 is just the usual extra ignored arg for parsing this stuff.
+\newif\ifimagevmode
+\def\imagexxx#1,#2,#3,#4,#5,#6\finish{\begingroup
+  \catcode`\^^M = 5     % in case we're inside an example
+  \normalturnoffactive  % allow _ et al. in names
+  % If the image is by itself, center it.
+  \ifvmode
+    \imagevmodetrue
+    \nobreak\bigskip
+    % Usually we'll have text after the image which will insert
+    % \parskip glue, so insert it here too to equalize the space
+    % above and below.
+    \nobreak\vskip\parskip
+    \nobreak
+    \line\bgroup\hss
+  \fi
+  %
+  % Output the image.
+  \ifpdf
+    \dopdfimage{#1}{#2}{#3}%
+  \else
+    % \epsfbox itself resets \epsf?size at each figure.
+    \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \epsfxsize=#2\relax \fi
+    \setbox0 = \hbox{\ignorespaces #3}\ifdim\wd0 > 0pt \epsfysize=#3\relax \fi
+    \epsfbox{#1.eps}%
+  \fi
+  %
+  \ifimagevmode \hss \egroup \bigbreak \fi  % space after the image
+\endgroup}
+
+
+% @float FLOATTYPE,LABEL,LOC ... @end float for displayed figures, tables,
+% etc.  We don't actually implement floating yet, we always include the
+% float "here".  But it seemed the best name for the future.
+%
+\envparseargdef\float{\eatcommaspace\eatcommaspace\dofloat#1, , ,\finish}
+
+% There may be a space before second and/or third parameter; delete it.
+\def\eatcommaspace#1, {#1,}
+
+% #1 is the optional FLOATTYPE, the text label for this float, typically
+% "Figure", "Table", "Example", etc.  Can't contain commas.  If omitted,
+% this float will not be numbered and cannot be referred to.
+%
+% #2 is the optional xref label.  Also must be present for the float to
+% be referable.
+%
+% #3 is the optional positioning argument; for now, it is ignored.  It
+% will somehow specify the positions allowed to float to (here, top, bottom).
+%
+% We keep a separate counter for each FLOATTYPE, which we reset at each
+% chapter-level command.
+\let\resetallfloatnos=\empty
+%
+\def\dofloat#1,#2,#3,#4\finish{%
+  \let\thiscaption=\empty
+  \let\thisshortcaption=\empty
+  %
+  % don't lose footnotes inside @float.
+  %
+  % BEWARE: when the floats start float, we have to issue warning whenever an
+  % insert appears inside a float which could possibly float. --kasal, 26may04
+  %
+  \startsavinginserts
+  %
+  % We can't be used inside a paragraph.
+  \par
+  %
+  \vtop\bgroup
+    \def\floattype{#1}%
+    \def\floatlabel{#2}%
+    \def\floatloc{#3}% we do nothing with this yet.
+    %
+    \ifx\floattype\empty
+      \let\safefloattype=\empty
+    \else
+      {%
+        % the floattype might have accents or other special characters,
+        % but we need to use it in a control sequence name.
+        \indexnofonts
+        \turnoffactive
+        \xdef\safefloattype{\floattype}%
+      }%
+    \fi
+    %
+    % If label is given but no type, we handle that as the empty type.
+    \ifx\floatlabel\empty \else
+      % We want each FLOATTYPE to be numbered separately (Figure 1,
+      % Table 1, Figure 2, ...).  (And if no label, no number.)
+      %
+      \expandafter\getfloatno\csname\safefloattype floatno\endcsname
+      \global\advance\floatno by 1
+      %
+      {%
+        % This magic value for \thissection is output by \setref as the
+        % XREFLABEL-title value.  \xrefX uses it to distinguish float
+        % labels (which have a completely different output format) from
+        % node and anchor labels.  And \xrdef uses it to construct the
+        % lists of floats.
+        %
+        \edef\thissection{\floatmagic=\safefloattype}%
+        \setref{\floatlabel}{Yfloat}%
+      }%
+    \fi
+    %
+    % start with \parskip glue, I guess.
+    \vskip\parskip
+    %
+    % Don't suppress indentation if a float happens to start a section.
+    \restorefirstparagraphindent
+}
+
+% we have these possibilities:
+% @float Foo,lbl & @caption{Cap}: Foo 1.1: Cap
+% @float Foo,lbl & no caption:    Foo 1.1
+% @float Foo & @caption{Cap}:     Foo: Cap
+% @float Foo & no caption:        Foo
+% @float ,lbl & Caption{Cap}:     1.1: Cap
+% @float ,lbl & no caption:       1.1
+% @float & @caption{Cap}:         Cap
+% @float & no caption:
+%
+\def\Efloat{%
+    \let\floatident = \empty
+    %
+    % In all cases, if we have a float type, it comes first.
+    \ifx\floattype\empty \else \def\floatident{\floattype}\fi
+    %
+    % If we have an xref label, the number comes next.
+    \ifx\floatlabel\empty \else
+      \ifx\floattype\empty \else % if also had float type, need tie first.
+        \appendtomacro\floatident{\tie}%
+      \fi
+      % the number.
+      \appendtomacro\floatident{\chaplevelprefix\the\floatno}%
+    \fi
+    %
+    % Start the printed caption with what we've constructed in
+    % \floatident, but keep it separate; we need \floatident again.
+    \let\captionline = \floatident
+    %
+    \ifx\thiscaption\empty \else
+      \ifx\floatident\empty \else
+	\appendtomacro\captionline{: }% had ident, so need a colon between
+      \fi
+      %
+      % caption text.
+      \appendtomacro\captionline{\scanexp\thiscaption}%
+    \fi
+    %
+    % If we have anything to print, print it, with space before.
+    % Eventually this needs to become an \insert.
+    \ifx\captionline\empty \else
+      \vskip.5\parskip
+      \captionline
+    \fi
+    %
+    % If have an xref label, write the list of floats info.  Do this
+    % after the caption, to avoid chance of it being a breakpoint.
+    \ifx\floatlabel\empty \else
+      % Write the text that goes in the lof to the aux file as
+      % \floatlabel-lof.  Besides \floatident, we include the short
+      % caption if specified, else the full caption if specified, else nothing.
+      {%
+        \atdummies \turnoffactive \otherbackslash
+        \immediate\write\auxfile{@xrdef{\floatlabel-lof}{%
+          \floatident
+          \ifx\thisshortcaption\empty
+            \ifx\thiscaption\empty \else : \thiscaption \fi
+          \else
+            : \thisshortcaption
+          \fi
+        }}%
+      }%
+    \fi
+    %
+    % Space below caption, if we printed anything.
+    \ifx\printedsomething\empty \else \vskip\parskip \fi
+  \egroup  % end of \vtop
+  %
+  % place the captured inserts
+  %
+  % BEWARE: when the floats start float, we have to issue warning whenever an
+  % insert appears inside a float which could possibly float. --kasal, 26may04
+  %
+  \checkinserts
+}
+
+% Append the tokens #2 to the definition of macro #1, not expanding either.
+%
+\def\appendtomacro#1#2{%
+  \expandafter\def\expandafter#1\expandafter{#1#2}%
+}
+
+% @caption, @shortcaption
+%
+\def\caption{\docaption\thiscaption}
+\def\shortcaption{\docaption\thisshortcaption}
+\def\docaption{\checkenv\float \bgroup\scanargctxt\defcaption}
+\def\defcaption#1#2{\egroup \def#1{#2}}
+
+% The parameter is the control sequence identifying the counter we are
+% going to use.  Create it if it doesn't exist and assign it to \floatno.
+\def\getfloatno#1{%
+  \ifx#1\relax
+      % Haven't seen this figure type before.
+      \csname newcount\endcsname #1%
+      %
+      % Remember to reset this floatno at the next chap.
+      \expandafter\gdef\expandafter\resetallfloatnos
+        \expandafter{\resetallfloatnos #1=0 }%
+  \fi
+  \let\floatno#1%
+}
+
+% \setref calls this to get the XREFLABEL-snt value.  We want an @xref
+% to the FLOATLABEL to expand to "Figure 3.1".  We call \setref when we
+% first read the @float command.
+%
+\def\Yfloat{\floattype@tie \chaplevelprefix\the\floatno}%
+
+% Magic string used for the XREFLABEL-title value, so \xrefX can
+% distinguish floats from other xref types.
+\def\floatmagic{!!float!!}
+
+% #1 is the control sequence we are passed; we expand into a conditional
+% which is true if #1 represents a float ref.  That is, the magic
+% \thissection value which we \setref above.
+%
+\def\iffloat#1{\expandafter\doiffloat#1==\finish}
+%
+% #1 is (maybe) the \floatmagic string.  If so, #2 will be the
+% (safe) float type for this float.  We set \iffloattype to #2.
+%
+\def\doiffloat#1=#2=#3\finish{%
+  \def\temp{#1}%
+  \def\iffloattype{#2}%
+  \ifx\temp\floatmagic
+}
+
+% @listoffloats FLOATTYPE - print a list of floats like a table of contents.
+%
+\parseargdef\listoffloats{%
+  \def\floattype{#1}% floattype
+  {%
+    % the floattype might have accents or other special characters,
+    % but we need to use it in a control sequence name.
+    \indexnofonts
+    \turnoffactive
+    \xdef\safefloattype{\floattype}%
+  }%
+  %
+  % \xrdef saves the floats as a \do-list in \floatlistSAFEFLOATTYPE.
+  \expandafter\ifx\csname floatlist\safefloattype\endcsname \relax
+    \ifhavexrefs
+      % if the user said @listoffloats foo but never @float foo.
+      \message{\linenumber No `\safefloattype' floats to list.}%
+    \fi
+  \else
+    \begingroup
+      \leftskip=\tocindent  % indent these entries like a toc
+      \let\do=\listoffloatsdo
+      \csname floatlist\safefloattype\endcsname
+    \endgroup
+  \fi
+}
+
+% This is called on each entry in a list of floats.  We're passed the
+% xref label, in the form LABEL-title, which is how we save it in the
+% aux file.  We strip off the -title and look up \XRLABEL-lof, which
+% has the text we're supposed to typeset here.
+%
+% Figures without xref labels will not be included in the list (since
+% they won't appear in the aux file).
+%
+\def\listoffloatsdo#1{\listoffloatsdoentry#1\finish}
+\def\listoffloatsdoentry#1-title\finish{{%
+  % Can't fully expand XR#1-lof because it can contain anything.  Just
+  % pass the control sequence.  On the other hand, XR#1-pg is just the
+  % page number, and we want to fully expand that so we can get a link
+  % in pdf output.
+  \toksA = \expandafter{\csname XR#1-lof\endcsname}%
+  %
+  % use the same \entry macro we use to generate the TOC and index.
+  \edef\writeentry{\noexpand\entry{\the\toksA}{\csname XR#1-pg\endcsname}}%
+  \writeentry
+}}
+
+\message{localization,}
+% and i18n.
+
+% @documentlanguage is usually given very early, just after
+% @setfilename.  If done too late, it may not override everything
+% properly.  Single argument is the language abbreviation.
+% It would be nice if we could set up a hyphenation file here.
+%
+\parseargdef\documentlanguage{%
+  \tex % read txi-??.tex file in plain TeX.
+    % Read the file if it exists.
+    \openin 1 txi-#1.tex
+    \ifeof 1
+      \errhelp = \nolanghelp
+      \errmessage{Cannot read language file txi-#1.tex}%
+    \else
+      \input txi-#1.tex
+    \fi
+    \closein 1
+  \endgroup
+}
+\newhelp\nolanghelp{The given language definition file cannot be found or
+is empty.  Maybe you need to install it?  In the current directory
+should work if nowhere else does.}
+
+
+% @documentencoding should change something in TeX eventually, most
+% likely, but for now just recognize it.
+\let\documentencoding = \comment
+
+
+% Page size parameters.
+%
+\newdimen\defaultparindent \defaultparindent = 15pt
+
+\chapheadingskip = 15pt plus 4pt minus 2pt
+\secheadingskip = 12pt plus 3pt minus 2pt
+\subsecheadingskip = 9pt plus 2pt minus 2pt
+
+% Prevent underfull vbox error messages.
+\vbadness = 10000
+
+% Don't be so finicky about underfull hboxes, either.
+\hbadness = 2000
+
+% Following George Bush, just get rid of widows and orphans.
+\widowpenalty=10000
+\clubpenalty=10000
+
+% Use TeX 3.0's \emergencystretch to help line breaking, but if we're
+% using an old version of TeX, don't do anything.  We want the amount of
+% stretch added to depend on the line length, hence the dependence on
+% \hsize.  We call this whenever the paper size is set.
+%
+\def\setemergencystretch{%
+  \ifx\emergencystretch\thisisundefined
+    % Allow us to assign to \emergencystretch anyway.
+    \def\emergencystretch{\dimen0}%
+  \else
+    \emergencystretch = .15\hsize
+  \fi
+}
+
+% Parameters in order: 1) textheight; 2) textwidth; 3) voffset;
+% 4) hoffset; 5) binding offset; 6) topskip; 7) physical page height; 8)
+% physical page width.
+%
+% We also call \setleading{\textleading}, so the caller should define
+% \textleading.  The caller should also set \parskip.
+%
+\def\internalpagesizes#1#2#3#4#5#6#7#8{%
+  \voffset = #3\relax
+  \topskip = #6\relax
+  \splittopskip = \topskip
+  %
+  \vsize = #1\relax
+  \advance\vsize by \topskip
+  \outervsize = \vsize
+  \advance\outervsize by 2\topandbottommargin
+  \pageheight = \vsize
+  %
+  \hsize = #2\relax
+  \outerhsize = \hsize
+  \advance\outerhsize by 0.5in
+  \pagewidth = \hsize
+  %
+  \normaloffset = #4\relax
+  \bindingoffset = #5\relax
+  %
+  \ifpdf
+    \pdfpageheight #7\relax
+    \pdfpagewidth #8\relax
+  \fi
+  %
+  \setleading{\textleading}
+  %
+  \parindent = \defaultparindent
+  \setemergencystretch
+}
+
+% @letterpaper (the default).
+\def\letterpaper{{\globaldefs = 1
+  \parskip = 3pt plus 2pt minus 1pt
+  \textleading = 13.2pt
+  %
+  % If page is nothing but text, make it come out even.
+  \internalpagesizes{46\baselineskip}{6in}%
+                    {\voffset}{.25in}%
+                    {\bindingoffset}{36pt}%
+                    {11in}{8.5in}%
+}}
+
+% Use @smallbook to reset parameters for 7x9.5 (or so) format.
+\def\smallbook{{\globaldefs = 1
+  \parskip = 2pt plus 1pt
+  \textleading = 12pt
+  %
+  \internalpagesizes{7.5in}{5in}%
+                    {\voffset}{.25in}%
+                    {\bindingoffset}{16pt}%
+                    {9.25in}{7in}%
+  %
+  \lispnarrowing = 0.3in
+  \tolerance = 700
+  \hfuzz = 1pt
+  \contentsrightmargin = 0pt
+  \defbodyindent = .5cm
+}}
+
+% Use @afourpaper to print on European A4 paper.
+\def\afourpaper{{\globaldefs = 1
+  \parskip = 3pt plus 2pt minus 1pt
+  \textleading = 13.2pt
+  %
+  % Double-side printing via postscript on Laserjet 4050
+  % prints double-sided nicely when \bindingoffset=10mm and \hoffset=-6mm.
+  % To change the settings for a different printer or situation, adjust
+  % \normaloffset until the front-side and back-side texts align.  Then
+  % do the same for \bindingoffset.  You can set these for testing in
+  % your texinfo source file like this:
+  % @tex
+  % \global\normaloffset = -6mm
+  % \global\bindingoffset = 10mm
+  % @end tex
+  \internalpagesizes{51\baselineskip}{160mm}
+                    {\voffset}{\hoffset}%
+                    {\bindingoffset}{44pt}%
+                    {297mm}{210mm}%
+  %
+  \tolerance = 700
+  \hfuzz = 1pt
+  \contentsrightmargin = 0pt
+  \defbodyindent = 5mm
+}}
+
+% Use @afivepaper to print on European A5 paper.
+% From romildo@urano.iceb.ufop.br, 2 July 2000.
+% He also recommends making @example and @lisp be small.
+\def\afivepaper{{\globaldefs = 1
+  \parskip = 2pt plus 1pt minus 0.1pt
+  \textleading = 12.5pt
+  %
+  \internalpagesizes{160mm}{120mm}%
+                    {\voffset}{\hoffset}%
+                    {\bindingoffset}{8pt}%
+                    {210mm}{148mm}%
+  %
+  \lispnarrowing = 0.2in
+  \tolerance = 800
+  \hfuzz = 1.2pt
+  \contentsrightmargin = 0pt
+  \defbodyindent = 2mm
+  \tableindent = 12mm
+}}
+
+% A specific text layout, 24x15cm overall, intended for A4 paper.
+\def\afourlatex{{\globaldefs = 1
+  \afourpaper
+  \internalpagesizes{237mm}{150mm}%
+                    {\voffset}{4.6mm}%
+                    {\bindingoffset}{7mm}%
+                    {297mm}{210mm}%
+  %
+  % Must explicitly reset to 0 because we call \afourpaper.
+  \globaldefs = 0
+}}
+
+% Use @afourwide to print on A4 paper in landscape format.
+\def\afourwide{{\globaldefs = 1
+  \afourpaper
+  \internalpagesizes{241mm}{165mm}%
+                    {\voffset}{-2.95mm}%
+                    {\bindingoffset}{7mm}%
+                    {297mm}{210mm}%
+  \globaldefs = 0
+}}
+
+% @pagesizes TEXTHEIGHT[,TEXTWIDTH]
+% Perhaps we should allow setting the margins, \topskip, \parskip,
+% and/or leading, also. Or perhaps we should compute them somehow.
+%
+\parseargdef\pagesizes{\pagesizesyyy #1,,\finish}
+\def\pagesizesyyy#1,#2,#3\finish{{%
+  \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \hsize=#2\relax \fi
+  \globaldefs = 1
+  %
+  \parskip = 3pt plus 2pt minus 1pt
+  \setleading{\textleading}%
+  %
+  \dimen0 = #1
+  \advance\dimen0 by \voffset
+  %
+  \dimen2 = \hsize
+  \advance\dimen2 by \normaloffset
+  %
+  \internalpagesizes{#1}{\hsize}%
+                    {\voffset}{\normaloffset}%
+                    {\bindingoffset}{44pt}%
+                    {\dimen0}{\dimen2}%
+}}
+
+% Set default to letter.
+%
+\letterpaper
+
+
+\message{and turning on texinfo input format.}
+
+% Define macros to output various characters with catcode for normal text.
+\catcode`\"=\other
+\catcode`\~=\other
+\catcode`\^=\other
+\catcode`\_=\other
+\catcode`\|=\other
+\catcode`\<=\other
+\catcode`\>=\other
+\catcode`\+=\other
+\catcode`\$=\other
+\def\normaldoublequote{"}
+\def\normaltilde{~}
+\def\normalcaret{^}
+\def\normalunderscore{_}
+\def\normalverticalbar{|}
+\def\normalless{<}
+\def\normalgreater{>}
+\def\normalplus{+}
+\def\normaldollar{$}%$ font-lock fix
+
+% This macro is used to make a character print one way in \tt
+% (where it can probably be output as-is), and another way in other fonts,
+% where something hairier probably needs to be done.
+%
+% #1 is what to print if we are indeed using \tt; #2 is what to print
+% otherwise.  Since all the Computer Modern typewriter fonts have zero
+% interword stretch (and shrink), and it is reasonable to expect all
+% typewriter fonts to have this, we can check that font parameter.
+%
+\def\ifusingtt#1#2{\ifdim \fontdimen3\font=0pt #1\else #2\fi}
+
+% Same as above, but check for italic font.  Actually this also catches
+% non-italic slanted fonts since it is impossible to distinguish them from
+% italic fonts.  But since this is only used by $ and it uses \sl anyway
+% this is not a problem.
+\def\ifusingit#1#2{\ifdim \fontdimen1\font>0pt #1\else #2\fi}
+
+% Turn off all special characters except @
+% (and those which the user can use as if they were ordinary).
+% Most of these we simply print from the \tt font, but for some, we can
+% use math or other variants that look better in normal text.
+
+\catcode`\"=\active
+\def\activedoublequote{{\tt\char34}}
+\let"=\activedoublequote
+\catcode`\~=\active
+\def~{{\tt\char126}}
+\chardef\hat=`\^
+\catcode`\^=\active
+\def^{{\tt \hat}}
+
+\catcode`\_=\active
+\def_{\ifusingtt\normalunderscore\_}
+% Subroutine for the previous macro.
+\def\_{\leavevmode \kern.07em \vbox{\hrule width.3em height.1ex}\kern .07em }
+
+\catcode`\|=\active
+\def|{{\tt\char124}}
+\chardef \less=`\<
+\catcode`\<=\active
+\def<{{\tt \less}}
+\chardef \gtr=`\>
+\catcode`\>=\active
+\def>{{\tt \gtr}}
+\catcode`\+=\active
+\def+{{\tt \char 43}}
+\catcode`\$=\active
+\def${\ifusingit{{\sl\$}}\normaldollar}%$ font-lock fix
+
+% If a .fmt file is being used, characters that might appear in a file
+% name cannot be active until we have parsed the command line.
+% So turn them off again, and have \everyjob (or @setfilename) turn them on.
+% \otherifyactive is called near the end of this file.
+\def\otherifyactive{\catcode`+=\other \catcode`\_=\other}
+
+\catcode`\@=0
+
+% \backslashcurfont outputs one backslash character in current font,
+% as in \char`\\.
+\global\chardef\backslashcurfont=`\\
+\global\let\rawbackslashxx=\backslashcurfont  % let existing .??s files work
+
+% \rawbackslash defines an active \ to do \backslashcurfont.
+% \otherbackslash defines an active \ to be a literal `\' character with
+% catcode other.
+{\catcode`\\=\active
+ @gdef@rawbackslash{@let\=@backslashcurfont}
+ @gdef@otherbackslash{@let\=@realbackslash}
+}
+
+% \realbackslash is an actual character `\' with catcode other.
+{\catcode`\\=\other @gdef@realbackslash{\}}
+
+% \normalbackslash outputs one backslash in fixed width font.
+\def\normalbackslash{{\tt\backslashcurfont}}
+
+\catcode`\\=\active
+
+% Used sometimes to turn off (effectively) the active characters
+% even after parsing them.
+@def@turnoffactive{%
+  @let"=@normaldoublequote
+  @let\=@realbackslash
+  @let~=@normaltilde
+  @let^=@normalcaret
+  @let_=@normalunderscore
+  @let|=@normalverticalbar
+  @let<=@normalless
+  @let>=@normalgreater
+  @let+=@normalplus
+  @let$=@normaldollar %$ font-lock fix
+  @unsepspaces
+}
+
+% Same as @turnoffactive except outputs \ as {\tt\char`\\} instead of
+% the literal character `\'.  (Thus, \ is not expandable when this is in
+% effect.)
+%
+@def@normalturnoffactive{@turnoffactive @let\=@normalbackslash}
+
+% Make _ and + \other characters, temporarily.
+% This is canceled by @fixbackslash.
+@otherifyactive
+
+% If a .fmt file is being used, we don't want the `\input texinfo' to show up.
+% That is what \eatinput is for; after that, the `\' should revert to printing
+% a backslash.
+%
+@gdef@eatinput input texinfo{@fixbackslash}
+@global@let\ = @eatinput
+
+% On the other hand, perhaps the file did not have a `\input texinfo'. Then
+% the first `\{ in the file would cause an error. This macro tries to fix
+% that, assuming it is called before the first `\' could plausibly occur.
+% Also back turn on active characters that might appear in the input
+% file name, in case not using a pre-dumped format.
+%
+@gdef@fixbackslash{%
+  @ifx\@eatinput @let\ = @normalbackslash @fi
+  @catcode`+=@active
+  @catcode`@_=@active
+}
+
+% Say @foo, not \foo, in error messages.
+@escapechar = `@@
+
+% These look ok in all fonts, so just make them not special.
+@catcode`@& = @other
+@catcode`@# = @other
+@catcode`@% = @other
+
+
+@c Local variables:
+@c eval: (add-hook 'write-file-hooks 'time-stamp)
+@c page-delimiter: "^\\\\message"
+@c time-stamp-start: "def\\\\texinfoversion{"
+@c time-stamp-format: "%:y-%02m-%02d.%02H"
+@c time-stamp-end: "}"
+@c End:
+
+@c vim:sw=2:
+
+@ignore
+   arch-tag: e1b36e32-c96e-4135-a41a-0b2efa2ea115
+@end ignore
diff --git a/src/sed/config_h.in b/src/sed/config_h.in
new file mode 100644
index 0000000..bd90836
--- /dev/null
+++ b/src/sed/config_h.in
@@ -0,0 +1,373 @@
+/* config_h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for `alloca.c' support on those systems.
+   */
+#undef CRAY_STACKSEG_END
+
+/* Define to 1 if using `alloca.c'. */
+#undef C_ALLOCA
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+#undef ENABLE_NLS
+
+/* Define to 1 if you have `alloca', as a function or macro. */
+#undef HAVE_ALLOCA
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+#undef HAVE_ALLOCA_H
+
+/* Define to 1 if you have the <argz.h> header file. */
+#undef HAVE_ARGZ_H
+
+/* Define to 1 if you have the `bcopy' function. */
+#undef HAVE_BCOPY
+
+/* Define to 1 if you have the `btowc' function. */
+#undef HAVE_BTOWC
+
+/* Define to 1 if you have the `bzero' function. */
+#undef HAVE_BZERO
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+#undef HAVE_DCGETTEXT
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
+   */
+#undef HAVE_DIRENT_H
+
+/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
+#undef HAVE_DOPRNT
+
+/* Define to 1 if you have the <errno.h> header file. */
+#undef HAVE_ERRNO_H
+
+/* Define to 1 if you have the `fchmod' function. */
+#undef HAVE_FCHMOD
+
+/* Define to 1 if you have the `fchown' function. */
+#undef HAVE_FCHOWN
+
+/* Define to 1 if you have the `feof_unlocked' function. */
+#undef HAVE_FEOF_UNLOCKED
+
+/* Define to 1 if you have the `fgets_unlocked' function. */
+#undef HAVE_FGETS_UNLOCKED
+
+/* Define to 1 if you have the `getcwd' function. */
+#undef HAVE_GETCWD
+
+/* Define to 1 if you have the `getc_unlocked' function. */
+#undef HAVE_GETC_UNLOCKED
+
+/* Define to 1 if you have the `getegid' function. */
+#undef HAVE_GETEGID
+
+/* Define to 1 if you have the `geteuid' function. */
+#undef HAVE_GETEUID
+
+/* Define to 1 if you have the `getgid' function. */
+#undef HAVE_GETGID
+
+/* Define to 1 if you have the `getpagesize' function. */
+#undef HAVE_GETPAGESIZE
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+#undef HAVE_GETTEXT
+
+/* Define to 1 if you have the `getuid' function. */
+#undef HAVE_GETUID
+
+/* Define if you have the iconv() function. */
+#undef HAVE_ICONV
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the <io.h> header file. */
+#undef HAVE_IO_H
+
+/* Define to 1 if you have the `isascii' function. */
+#undef HAVE_ISASCII
+
+/* Define to 1 if you have the `isatty' function. */
+#undef HAVE_ISATTY
+
+/* Define to 1 if you have the `isblank' function. */
+#undef HAVE_ISBLANK
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+#undef HAVE_LANGINFO_CODESET
+
+/* Define if your <locale.h> file defines LC_MESSAGES. */
+#undef HAVE_LC_MESSAGES
+
+/* Define to 1 if you have the `regex' library (-lregex). */
+#undef HAVE_LIBREGEX
+
+/* Define to 1 if you have the <limits.h> header file. */
+#undef HAVE_LIMITS_H
+
+/* Define to 1 if you have the <locale.h> header file. */
+#undef HAVE_LOCALE_H
+
+/* Define to 1 if you support file names longer than 14 characters. */
+#undef HAVE_LONG_FILE_NAMES
+
+/* Define to 1 if you have the <malloc.h> header file. */
+#undef HAVE_MALLOC_H
+
+/* Define to 1 if mbrtowc and mbstate_t are properly declared. */
+#undef HAVE_MBRTOWC
+
+/* Define to 1 if <wchar.h> declares mbstate_t. */
+#undef HAVE_MBSTATE_T
+
+/* Define to 1 if you have the <mcheck.h> header file. */
+#undef HAVE_MCHECK_H
+
+/* Define to 1 if you have the `memchr' function. */
+#undef HAVE_MEMCHR
+
+/* Define to 1 if you have the `memcmp' function. */
+#undef HAVE_MEMCMP
+
+/* Define to 1 if you have the `memcpy' function. */
+#undef HAVE_MEMCPY
+
+/* Define to 1 if you have the `memmove' function. */
+#undef HAVE_MEMMOVE
+
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
+/* Define to 1 if you have the `mempcpy' function. */
+#undef HAVE_MEMPCPY
+
+/* Define to 1 if you have the `memset' function. */
+#undef HAVE_MEMSET
+
+/* Define to 1 if you have the `mkstemp' function. */
+#undef HAVE_MKSTEMP
+
+/* Define to 1 if you have a working `mmap' system call. */
+#undef HAVE_MMAP
+
+/* Define to 1 if you have the `munmap' function. */
+#undef HAVE_MUNMAP
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
+#undef HAVE_NDIR_H
+
+/* Define to 1 if you have the <nl_types.h> header file. */
+#undef HAVE_NL_TYPES_H
+
+/* Define to 1 if libc includes obstacks. */
+#undef HAVE_OBSTACK
+
+/* Define to 1 if you have the `pathconf' function. */
+#undef HAVE_PATHCONF
+
+/* Define to 1 if you have the `popen' function. */
+#undef HAVE_POPEN
+
+/* Define to 1 if you have the `putenv' function. */
+#undef HAVE_PUTENV
+
+/* Define to 1 if you have the <regex.h> header file. */
+#undef HAVE_REGEX_H
+
+/* Define to 1 if you have the `setenv' function. */
+#undef HAVE_SETENV
+
+/* Define to 1 if you have the `setlocale' function. */
+#undef HAVE_SETLOCALE
+
+/* Define to 1 if you have the <stdarg.h> header file. */
+#undef HAVE_STDARG_H
+
+/* Define to 1 if stdbool.h conforms to C99. */
+#undef HAVE_STDBOOL_H
+
+/* Define to 1 if you have the <stddef.h> header file. */
+#undef HAVE_STDDEF_H
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the `stpcpy' function. */
+#undef HAVE_STPCPY
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#undef HAVE_STRCASECMP
+
+/* Define to 1 if you have the `strchr' function. */
+#undef HAVE_STRCHR
+
+/* Define to 1 if you have the `strdup' function. */
+#undef HAVE_STRDUP
+
+/* Define to 1 if you have the `strerror' function. */
+#undef HAVE_STRERROR
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the `strtoul' function. */
+#undef HAVE_STRTOUL
+
+/* Define to 1 if you have the `strverscmp' function. */
+#undef HAVE_STRVERSCMP
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
+   */
+#undef HAVE_SYS_DIR_H
+
+/* Define to 1 if you have the <sys/file.h> header file. */
+#undef HAVE_SYS_FILE_H
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
+   */
+#undef HAVE_SYS_NDIR_H
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#undef HAVE_SYS_PARAM_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the `tsearch' function. */
+#undef HAVE_TSEARCH
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to 1 if you have the `vprintf' function. */
+#undef HAVE_VPRINTF
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#undef HAVE_WCHAR_H
+
+/* Define to 1 if you have the `wcrtomb' function. */
+#undef HAVE_WCRTOMB
+
+/* Define to 1 if you have the `wcscoll' function. */
+#undef HAVE_WCSCOLL
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#undef HAVE_WCTYPE_H
+
+/* Define to 1 if the system has the type `_Bool'. */
+#undef HAVE__BOOL
+
+/* Define to 1 if you have the `__argz_count' function. */
+#undef HAVE___ARGZ_COUNT
+
+/* Define to 1 if you have the `__argz_next' function. */
+#undef HAVE___ARGZ_NEXT
+
+/* Define to 1 if you have the `__argz_stringify' function. */
+#undef HAVE___ARGZ_STRINGIFY
+
+/* Define as const if the declaration of iconv() needs const. */
+#undef ICONV_CONST
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define to the version of GNU sed whose features are supported by this sed.
+   */
+#undef SED_FEATURE_VERSION
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+	STACK_DIRECTION > 0 => grows toward higher addresses
+	STACK_DIRECTION < 0 => grows toward lower addresses
+	STACK_DIRECTION = 0 => direction of growth unknown */
+#undef STACK_DIRECTION
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Version number of package */
+#undef VERSION
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
+
+/* Define to 1 if on MINIX. */
+#undef _MINIX
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+#undef _POSIX_1_SOURCE
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+#undef _POSIX_SOURCE
+
+/* Include BSD functions in regex, used by the testsuite */
+#undef _REGEX_RE_COMP
+
+/* Define to empty if `const' does not conform to ANSI C. */
+#undef const
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+#undef inline
+#endif
+
+/* Define to a type if <wchar.h> does not define. */
+#undef mbstate_t
+
+/* Define to `long' if <sys/types.h> does not define. */
+#undef off_t
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+#undef size_t
+
+/* Define to `int' if <sys/types.h> does not define. */
+#undef ssize_t
diff --git a/src/sed/configure b/src/sed/configure
new file mode 100755
index 0000000..0b01618
--- /dev/null
+++ b/src/sed/configure
@@ -0,0 +1,11310 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.59 for sed 4.1.5.
+#
+# Report bugs to <bonzini@gnu.org>.
+#
+# Copyright (C) 2003 Free Software Foundation, Inc.
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## --------------------- ##
+## M4sh Initialization.  ##
+## --------------------- ##
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+  set -o posix
+fi
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# Support unset when possible.
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+
+# Work around bugs in pre-3.0 UWIN ksh.
+$as_unset ENV MAIL MAILPATH
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+for as_var in \
+  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+  LC_TELEPHONE LC_TIME
+do
+  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
+    eval $as_var=C; export $as_var
+  else
+    $as_unset $as_var
+  fi
+done
+
+# Required to use basename.
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename /) >/dev/null 2>&1 && test "X`basename / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+
+# Name of the executable.
+as_me=`$as_basename "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)$' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; }
+  	  /^X\/\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\/\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+
+
+# PATH needs CR, and LINENO needs CR and PATH.
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+
+
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2"  || {
+  # Find who we are.  Look in the path if we contain no path at all
+  # relative or not.
+  case $0 in
+    *[\\/]* ) as_myself=$0 ;;
+    *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+done
+
+       ;;
+  esac
+  # We did not find ourselves, most probably we were run as `sh COMMAND'
+  # in which case we are not to be found in the path.
+  if test "x$as_myself" = x; then
+    as_myself=$0
+  fi
+  if test ! -f "$as_myself"; then
+    { echo "$as_me: error: cannot find myself; rerun with an absolute path" >&2
+   { (exit 1); exit 1; }; }
+  fi
+  case $CONFIG_SHELL in
+  '')
+    as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for as_base in sh bash ksh sh5; do
+	 case $as_dir in
+	 /*)
+	   if ("$as_dir/$as_base" -c '
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2" ') 2>/dev/null; then
+	     $as_unset BASH_ENV || test "${BASH_ENV+set}" != set || { BASH_ENV=; export BASH_ENV; }
+	     $as_unset ENV || test "${ENV+set}" != set || { ENV=; export ENV; }
+	     CONFIG_SHELL=$as_dir/$as_base
+	     export CONFIG_SHELL
+	     exec "$CONFIG_SHELL" "$0" ${1+"$@"}
+	   fi;;
+	 esac
+       done
+done
+;;
+  esac
+
+  # Create $as_me.lineno as a copy of $as_myself, but with $LINENO
+  # uniformly replaced by the line number.  The first 'sed' inserts a
+  # line-number line before each line; the second 'sed' does the real
+  # work.  The second script uses 'N' to pair each line-number line
+  # with the numbered line, and appends trailing '-' during
+  # substitution so that $LINENO is not a special case at line end.
+  # (Raja R Harinath suggested sed '=', and Paul Eggert wrote the
+  # second 'sed' script.  Blame Lee E. McMahon for sed's syntax.  :-)
+  sed '=' <$as_myself |
+    sed '
+      N
+      s,$,-,
+      : loop
+      s,^\(['$as_cr_digits']*\)\(.*\)[$]LINENO\([^'$as_cr_alnum'_]\),\1\2\1\3,
+      t loop
+      s,-$,,
+      s,^['$as_cr_digits']*\n,,
+    ' >$as_me.lineno &&
+  chmod +x $as_me.lineno ||
+    { echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2
+   { (exit 1); exit 1; }; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensible to this).
+  . ./$as_me.lineno
+  # Exit status is that of the last command.
+  exit
+}
+
+
+case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
+  *c*,-n*) ECHO_N= ECHO_C='
+' ECHO_T='	' ;;
+  *c*,*  ) ECHO_N=-n ECHO_C= ECHO_T= ;;
+  *)       ECHO_N= ECHO_C='\c' ECHO_T= ;;
+esac
+
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+rm -f conf$$ conf$$.exe conf$$.file
+echo >conf$$.file
+if ln -s conf$$.file conf$$ 2>/dev/null; then
+  # We could just check for DJGPP; but this test a) works b) is more generic
+  # and c) will remain valid once DJGPP supports symlinks (DJGPP 2.04).
+  if test -f conf$$.exe; then
+    # Don't use ln at all; we don't have any links
+    as_ln_s='cp -p'
+  else
+    as_ln_s='ln -s'
+  fi
+elif ln conf$$.file conf$$ 2>/dev/null; then
+  as_ln_s=ln
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.file
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p=:
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_executable_p="test -f"
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.
+as_nl='
+'
+IFS=" 	$as_nl"
+
+# CDPATH.
+$as_unset CDPATH
+
+
+# Name of the host.
+# hostname on some systems (SVR3.2, Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+exec 6>&1
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_config_libobj_dir=.
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+# Maximum number of lines to put in a shell here document.
+# This variable seems obsolete.  It should probably be removed, and
+# only ac_max_sed_lines should be used.
+: ${ac_max_here_lines=38}
+
+# Identity of this package.
+PACKAGE_NAME='sed'
+PACKAGE_TARNAME='sed'
+PACKAGE_VERSION='4.1.5'
+PACKAGE_STRING='sed 4.1.5'
+PACKAGE_BUGREPORT='bonzini@gnu.org'
+
+ac_unique_file="sed/sed.c"
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stdio.h>
+#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#if HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#if STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# if HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#if HAVE_STRING_H
+# if !STDC_HEADERS && HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+# include <string.h>
+#endif
+#if HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#else
+# if HAVE_STDINT_H
+#  include <stdint.h>
+# endif
+#endif
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar SED_FEATURE_VERSION CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE RANLIB ac_ct_RANLIB CPP EGREP HAVE__BOOL ALLOCA LIBOBJS TEST_REGEX_TRUE TEST_REGEX_FALSE BUILD_HTML_TRUE BUILD_HTML_FALSE TEXI2HTML MAKEINFO_HTML_TRUE MAKEINFO_HTML_FALSE TEXI2HTML_HTML_TRUE TEXI2HTML_HTML_FALSE MKINSTALLDIRS MSGFMT GMSGFMT XGETTEXT MSGMERGE build build_cpu build_vendor build_os host host_cpu host_vendor host_os GLIBC21 LIBICONV LTLIBICONV INTLBISON USE_NLS BUILD_INCLUDED_LIBINTL USE_INCLUDED_LIBINTL CATOBJEXT INTLOBJS DATADIRNAME INSTOBJEXT GENCAT INTL_LIBTOOL_SUFFIX_PREFIX INTLLIBS LIBINTL LTLIBINTL POSUB LTLIBOBJS'
+ac_subst_files=''
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datadir='${prefix}/share'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+libdir='${exec_prefix}/lib'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+infodir='${prefix}/info'
+mandir='${prefix}/man'
+
+ac_prev=
+for ac_option
+do
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval "$ac_prev=\$ac_option"
+    ac_prev=
+    continue
+  fi
+
+  ac_optarg=`expr "x$ac_option" : 'x[^=]*=\(.*\)'`
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case $ac_option in
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$ac_optarg ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build_alias ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build_alias=$ac_optarg ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file=$ac_optarg ;;
+
+  --config-cache | -C)
+    cache_file=config.cache ;;
+
+  -datadir | --datadir | --datadi | --datad | --data | --dat | --da)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=* | --data=* | --dat=* \
+  | --da=*)
+    datadir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_feature=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_feature" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid feature name: $ac_feature" >&2
+   { (exit 1); exit 1; }; }
+    ac_feature=`echo $ac_feature | sed 's/-/_/g'`
+    eval "enable_$ac_feature=no" ;;
+
+  -enable-* | --enable-*)
+    ac_feature=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_feature" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid feature name: $ac_feature" >&2
+   { (exit 1); exit 1; }; }
+    ac_feature=`echo $ac_feature | sed 's/-/_/g'`
+    case $ac_option in
+      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "enable_$ac_feature='$ac_optarg'" ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix=$ac_optarg ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he | -h)
+    ac_init_help=long ;;
+  -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+    ac_init_help=recursive ;;
+  -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+    ac_init_help=short ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host_alias ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host_alias=$ac_optarg ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir=$ac_optarg ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir=$ac_optarg ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst \
+  | --locals | --local | --loca | --loc | --lo)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* \
+  | --locals=* | --local=* | --loca=* | --loc=* | --lo=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_package=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_package" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid package name: $ac_package" >&2
+   { (exit 1); exit 1; }; }
+    ac_package=`echo $ac_package| sed 's/-/_/g'`
+    case $ac_option in
+      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "with_$ac_package='$ac_optarg'" ;;
+
+  -without-* | --without-*)
+    ac_package=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_package" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid package name: $ac_package" >&2
+   { (exit 1); exit 1; }; }
+    ac_package=`echo $ac_package | sed 's/-/_/g'`
+    eval "with_$ac_package=no" ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries=$ac_optarg ;;
+
+  -*) { echo "$as_me: error: unrecognized option: $ac_option
+Try \`$0 --help' for more information." >&2
+   { (exit 1); exit 1; }; }
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_envvar" : ".*[^_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid variable name: $ac_envvar" >&2
+   { (exit 1); exit 1; }; }
+    ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`
+    eval "$ac_envvar='$ac_optarg'"
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : ${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  { echo "$as_me: error: missing argument to $ac_option" >&2
+   { (exit 1); exit 1; }; }
+fi
+
+# Be sure to have absolute paths.
+for ac_var in exec_prefix prefix
+do
+  eval ac_val=$`echo $ac_var`
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* | NONE | '' ) ;;
+    *)  { echo "$as_me: error: expected an absolute directory name for --$ac_var: $ac_val" >&2
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# Be sure to have absolute paths.
+for ac_var in bindir sbindir libexecdir datadir sysconfdir sharedstatedir \
+	      localstatedir libdir includedir oldincludedir infodir mandir
+do
+  eval ac_val=$`echo $ac_var`
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* ) ;;
+    *)  { echo "$as_me: error: expected an absolute directory name for --$ac_var: $ac_val" >&2
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+    echo "$as_me: WARNING: If you wanted to set the --build type, don't use --host.
+    If a cross compiler is detected then cross compile mode will be used." >&2
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then its parent.
+  ac_confdir=`(dirname "$0") 2>/dev/null ||
+$as_expr X"$0" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$0" : 'X\(//\)[^/]' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$0" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r $srcdir/$ac_unique_file; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r $srcdir/$ac_unique_file; then
+  if test "$ac_srcdir_defaulted" = yes; then
+    { echo "$as_me: error: cannot find sources ($ac_unique_file) in $ac_confdir or .." >&2
+   { (exit 1); exit 1; }; }
+  else
+    { echo "$as_me: error: cannot find sources ($ac_unique_file) in $srcdir" >&2
+   { (exit 1); exit 1; }; }
+  fi
+fi
+(cd $srcdir && test -r ./$ac_unique_file) 2>/dev/null ||
+  { echo "$as_me: error: sources are in $srcdir, but \`cd $srcdir' does not work" >&2
+   { (exit 1); exit 1; }; }
+srcdir=`echo "$srcdir" | sed 's%\([^\\/]\)[\\/]*$%\1%'`
+ac_env_build_alias_set=${build_alias+set}
+ac_env_build_alias_value=$build_alias
+ac_cv_env_build_alias_set=${build_alias+set}
+ac_cv_env_build_alias_value=$build_alias
+ac_env_host_alias_set=${host_alias+set}
+ac_env_host_alias_value=$host_alias
+ac_cv_env_host_alias_set=${host_alias+set}
+ac_cv_env_host_alias_value=$host_alias
+ac_env_target_alias_set=${target_alias+set}
+ac_env_target_alias_value=$target_alias
+ac_cv_env_target_alias_set=${target_alias+set}
+ac_cv_env_target_alias_value=$target_alias
+ac_env_CC_set=${CC+set}
+ac_env_CC_value=$CC
+ac_cv_env_CC_set=${CC+set}
+ac_cv_env_CC_value=$CC
+ac_env_CFLAGS_set=${CFLAGS+set}
+ac_env_CFLAGS_value=$CFLAGS
+ac_cv_env_CFLAGS_set=${CFLAGS+set}
+ac_cv_env_CFLAGS_value=$CFLAGS
+ac_env_LDFLAGS_set=${LDFLAGS+set}
+ac_env_LDFLAGS_value=$LDFLAGS
+ac_cv_env_LDFLAGS_set=${LDFLAGS+set}
+ac_cv_env_LDFLAGS_value=$LDFLAGS
+ac_env_CPPFLAGS_set=${CPPFLAGS+set}
+ac_env_CPPFLAGS_value=$CPPFLAGS
+ac_cv_env_CPPFLAGS_set=${CPPFLAGS+set}
+ac_cv_env_CPPFLAGS_value=$CPPFLAGS
+ac_env_CPP_set=${CPP+set}
+ac_env_CPP_value=$CPP
+ac_cv_env_CPP_set=${CPP+set}
+ac_cv_env_CPP_value=$CPP
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures sed 4.1.5 to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+_ACEOF
+
+  cat <<_ACEOF
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+			  [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+			  [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR           user executables [EPREFIX/bin]
+  --sbindir=DIR          system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR       program executables [EPREFIX/libexec]
+  --datadir=DIR          read-only architecture-independent data [PREFIX/share]
+  --sysconfdir=DIR       read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR   modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR    modifiable single-machine data [PREFIX/var]
+  --libdir=DIR           object code libraries [EPREFIX/lib]
+  --includedir=DIR       C header files [PREFIX/include]
+  --oldincludedir=DIR    C header files for non-gcc [/usr/include]
+  --infodir=DIR          info documentation [PREFIX/info]
+  --mandir=DIR           man documentation [PREFIX/man]
+_ACEOF
+
+  cat <<\_ACEOF
+
+Program names:
+  --program-prefix=PREFIX            prepend PREFIX to installed program names
+  --program-suffix=SUFFIX            append SUFFIX to installed program names
+  --program-transform-name=PROGRAM   run sed PROGRAM on installed program names
+
+System types:
+  --build=BUILD     configure for building on BUILD [guessed]
+  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+  case $ac_init_help in
+     short | recursive ) echo "Configuration of sed 4.1.5:";;
+   esac
+  cat <<\_ACEOF
+
+Optional Features:
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --disable-dependency-tracking  speeds up one-time build
+  --enable-dependency-tracking   do not reject slow dependency extractors
+  --disable-largefile     omit support for large files
+  --disable-i18n          disable internationalization (default=yes)
+  --enable-regex-tests    enable regex matcher regression tests (default=yes)
+  --enable-html           build HTML manual (default=no)
+  --disable-nls           do not use Native Language Support
+
+Optional Packages:
+  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
+  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --with-included-regex   use included regex matcher (default=yes)
+  --with-gnu-ld           assume the C compiler uses GNU ld default=no
+  --with-libiconv-prefix=DIR  search for libiconv in DIR/include and DIR/lib
+  --without-libiconv-prefix     don't search for libiconv in includedir and libdir
+  --with-included-gettext use the GNU gettext library included here
+  --with-libintl-prefix=DIR  search for libintl in DIR/include and DIR/lib
+  --without-libintl-prefix     don't search for libintl in includedir and libdir
+
+Some influential environment variables:
+  CC          C compiler command
+  CFLAGS      C compiler flags
+  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
+              nonstandard directory <lib dir>
+  CPPFLAGS    C/C++ preprocessor flags, e.g. -I<include dir> if you have
+              headers in a nonstandard directory <include dir>
+  CPP         C preprocessor
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+Report bugs to <bonzini@gnu.org>.
+_ACEOF
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  ac_popdir=`pwd`
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d $ac_dir || continue
+    ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+
+# Do not use `cd foo && pwd` to compute absolute paths, because
+# the directories may not exist.
+case `pwd` in
+.) ac_abs_builddir="$ac_dir";;
+*)
+  case "$ac_dir" in
+  .) ac_abs_builddir=`pwd`;;
+  [\\/]* | ?:[\\/]* ) ac_abs_builddir="$ac_dir";;
+  *) ac_abs_builddir=`pwd`/"$ac_dir";;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_builddir=${ac_top_builddir}.;;
+*)
+  case ${ac_top_builddir}. in
+  .) ac_abs_top_builddir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_builddir=${ac_top_builddir}.;;
+  *) ac_abs_top_builddir=$ac_abs_builddir/${ac_top_builddir}.;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_srcdir=$ac_srcdir;;
+*)
+  case $ac_srcdir in
+  .) ac_abs_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_srcdir=$ac_srcdir;;
+  *) ac_abs_srcdir=$ac_abs_builddir/$ac_srcdir;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_srcdir=$ac_top_srcdir;;
+*)
+  case $ac_top_srcdir in
+  .) ac_abs_top_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_srcdir=$ac_top_srcdir;;
+  *) ac_abs_top_srcdir=$ac_abs_builddir/$ac_top_srcdir;;
+  esac;;
+esac
+
+    cd $ac_dir
+    # Check for guested configure; otherwise get Cygnus style configure.
+    if test -f $ac_srcdir/configure.gnu; then
+      echo
+      $SHELL $ac_srcdir/configure.gnu  --help=recursive
+    elif test -f $ac_srcdir/configure; then
+      echo
+      $SHELL $ac_srcdir/configure  --help=recursive
+    elif test -f $ac_srcdir/configure.ac ||
+	   test -f $ac_srcdir/configure.in; then
+      echo
+      $ac_configure --help
+    else
+      echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi
+    cd $ac_popdir
+  done
+fi
+
+test -n "$ac_init_help" && exit 0
+if $ac_init_version; then
+  cat <<\_ACEOF
+sed configure 4.1.5
+generated by GNU Autoconf 2.59
+
+Copyright (C) 2003 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit 0
+fi
+exec 5>config.log
+cat >&5 <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by sed $as_me 4.1.5, which was
+generated by GNU Autoconf 2.59.  Invocation command line was
+
+  $ $0 $@
+
+_ACEOF
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+hostinfo               = `(hostinfo) 2>/dev/null               || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  echo "PATH: $as_dir"
+done
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_sep=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
+      ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) ac_configure_args0="$ac_configure_args0 '$ac_arg'" ;;
+    2)
+      ac_configure_args1="$ac_configure_args1 '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+	ac_must_keep_next=false # Got value, back to normal.
+      else
+	case $ac_arg in
+	  *=* | --config-cache | -C | -disable-* | --disable-* \
+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+	  | -with-* | --with-* | -without-* | --without-* | --x)
+	    case "$ac_configure_args0 " in
+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+	    esac
+	    ;;
+	  -* ) ac_must_keep_next=true ;;
+	esac
+      fi
+      ac_configure_args="$ac_configure_args$ac_sep'$ac_arg'"
+      # Get rid of the leading space.
+      ac_sep=" "
+      ;;
+    esac
+  done
+done
+$as_unset ac_configure_args0 || test "${ac_configure_args0+set}" != set || { ac_configure_args0=; export ac_configure_args0; }
+$as_unset ac_configure_args1 || test "${ac_configure_args1+set}" != set || { ac_configure_args1=; export ac_configure_args1; }
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Be sure not to use single quotes in there, as some shells,
+# such as our DU 5.0 friend, will then `close' the trap.
+trap 'exit_status=$?
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    cat <<\_ASBOX
+## ---------------- ##
+## Cache variables. ##
+## ---------------- ##
+_ASBOX
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+{
+  (set) 2>&1 |
+    case `(ac_space='"'"' '"'"'; set | grep ac_space) 2>&1` in
+    *ac_space=\ *)
+      sed -n \
+	"s/'"'"'/'"'"'\\\\'"'"''"'"'/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='"'"'\\2'"'"'/p"
+      ;;
+    *)
+      sed -n \
+	"s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1=\\2/p"
+      ;;
+    esac;
+}
+    echo
+
+    cat <<\_ASBOX
+## ----------------- ##
+## Output variables. ##
+## ----------------- ##
+_ASBOX
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=$`echo $ac_var`
+      echo "$ac_var='"'"'$ac_val'"'"'"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      cat <<\_ASBOX
+## ------------- ##
+## Output files. ##
+## ------------- ##
+_ASBOX
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=$`echo $ac_var`
+	echo "$ac_var='"'"'$ac_val'"'"'"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      cat <<\_ASBOX
+## ----------- ##
+## confdefs.h. ##
+## ----------- ##
+_ASBOX
+      echo
+      sed "/^$/d" confdefs.h | sort
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      echo "$as_me: caught signal $ac_signal"
+    echo "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core &&
+  rm -rf conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+     ' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; { (exit 1); exit 1; }' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -rf conftest* confdefs.h
+# AIX cpp loses on an empty file, so make sure it contains at least a newline.
+echo >confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer explicitly selected file to automatically selected ones.
+if test -z "$CONFIG_SITE"; then
+  if test "x$prefix" != xNONE; then
+    CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
+  else
+    CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
+  fi
+fi
+for ac_site_file in $CONFIG_SITE; do
+  if test -r "$ac_site_file"; then
+    { echo "$as_me:$LINENO: loading site script $ac_site_file" >&5
+echo "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file"
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special
+  # files actually), so we avoid doing that.
+  if test -f "$cache_file"; then
+    { echo "$as_me:$LINENO: loading cache $cache_file" >&5
+echo "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . $cache_file;;
+      *)                      . ./$cache_file;;
+    esac
+  fi
+else
+  { echo "$as_me:$LINENO: creating cache $cache_file" >&5
+echo "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in `(set) 2>&1 |
+	       sed -n 's/^ac_env_\([a-zA-Z_0-9]*\)_set=.*/\1/p'`; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val="\$ac_cv_env_${ac_var}_value"
+  eval ac_new_val="\$ac_env_${ac_var}_value"
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { echo "$as_me:$LINENO: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { echo "$as_me:$LINENO: error: \`$ac_var' was not set in the previous run" >&5
+echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	{ echo "$as_me:$LINENO: error: \`$ac_var' has changed since the previous run:" >&5
+echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	{ echo "$as_me:$LINENO:   former value:  $ac_old_val" >&5
+echo "$as_me:   former value:  $ac_old_val" >&2;}
+	{ echo "$as_me:$LINENO:   current value: $ac_new_val" >&5
+echo "$as_me:   current value: $ac_new_val" >&2;}
+	ac_cache_corrupted=:
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
+      ac_arg=$ac_var=`echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) ac_configure_args="$ac_configure_args '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { echo "$as_me:$LINENO: error: changes in the environment can compromise the build" >&5
+echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+  { { echo "$as_me:$LINENO: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&5
+echo "$as_me: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ac_aux_dir=
+for ac_dir in config $srcdir/config; do
+  if test -f $ac_dir/install-sh; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install-sh -c"
+    break
+  elif test -f $ac_dir/install.sh; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install.sh -c"
+    break
+  elif test -f $ac_dir/shtool; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/shtool install -c"
+    break
+  fi
+done
+if test -z "$ac_aux_dir"; then
+  { { echo "$as_me:$LINENO: error: cannot find install-sh or install.sh in config $srcdir/config" >&5
+echo "$as_me: error: cannot find install-sh or install.sh in config $srcdir/config" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+ac_config_guess="$SHELL $ac_aux_dir/config.guess"
+ac_config_sub="$SHELL $ac_aux_dir/config.sub"
+ac_configure="$SHELL $ac_aux_dir/configure" # This should be Cygnus configure.
+
+
+          ac_config_headers="$ac_config_headers config.h:config_h.in"
+
+
+am__api_version="1.9"
+# Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+echo "$as_me:$LINENO: checking for a BSD-compatible install" >&5
+echo $ECHO_N "checking for a BSD-compatible install... $ECHO_C" >&6
+if test -z "$INSTALL"; then
+if test "${ac_cv_path_install+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  # Account for people who put trailing slashes in PATH elements.
+case $as_dir/ in
+  ./ | .// | /cC/* | \
+  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+  ?:\\/os2\\/install\\/* | ?:\\/OS2\\/INSTALL\\/* | \
+  /usr/ucb/* ) ;;
+  *)
+    # OSF1 and SCO ODT 3.0 have their own names for install.
+    # Don't use installbsd from OSF since it installs stuff as root
+    # by default.
+    for ac_prog in ginstall scoinst install; do
+      for ac_exec_ext in '' $ac_executable_extensions; do
+	if $as_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then
+	  if test $ac_prog = install &&
+	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # AIX install.  It has an incompatible calling convention.
+	    :
+	  elif test $ac_prog = install &&
+	    grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # program-specific install script used by HP pwplus--don't use.
+	    :
+	  else
+	    ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
+	    break 3
+	  fi
+	fi
+      done
+    done
+    ;;
+esac
+done
+
+
+fi
+  if test "${ac_cv_path_install+set}" = set; then
+    INSTALL=$ac_cv_path_install
+  else
+    # As a last resort, use the slow shell script.  We don't cache a
+    # path for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the path is relative.
+    INSTALL=$ac_install_sh
+  fi
+fi
+echo "$as_me:$LINENO: result: $INSTALL" >&5
+echo "${ECHO_T}$INSTALL" >&6
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+echo "$as_me:$LINENO: checking whether build environment is sane" >&5
+echo $ECHO_N "checking whether build environment is sane... $ECHO_C" >&6
+# Just in case
+sleep 1
+echo timestamp > conftest.file
+# Do `set' in a subshell so we don't clobber the current shell's
+# arguments.  Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+   set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null`
+   if test "$*" = "X"; then
+      # -L didn't work.
+      set X `ls -t $srcdir/configure conftest.file`
+   fi
+   rm -f conftest.file
+   if test "$*" != "X $srcdir/configure conftest.file" \
+      && test "$*" != "X conftest.file $srcdir/configure"; then
+
+      # If neither matched, then we have a broken ls.  This can happen
+      # if, for instance, CONFIG_SHELL is bash and it inherits a
+      # broken ls alias from the environment.  This has actually
+      # happened.  Such a system could not be considered "sane".
+      { { echo "$as_me:$LINENO: error: ls -t appears to fail.  Make sure there is not a broken
+alias in your environment" >&5
+echo "$as_me: error: ls -t appears to fail.  Make sure there is not a broken
+alias in your environment" >&2;}
+   { (exit 1); exit 1; }; }
+   fi
+
+   test "$2" = conftest.file
+   )
+then
+   # Ok.
+   :
+else
+   { { echo "$as_me:$LINENO: error: newly created file is older than distributed files!
+Check your system clock" >&5
+echo "$as_me: error: newly created file is older than distributed files!
+Check your system clock" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+test "$program_prefix" != NONE &&
+  program_transform_name="s,^,$program_prefix,;$program_transform_name"
+# Use a double $ so make ignores it.
+test "$program_suffix" != NONE &&
+  program_transform_name="s,\$,$program_suffix,;$program_transform_name"
+# Double any \ or $.  echo might interpret backslashes.
+# By default was `s,x,x', remove it if useless.
+cat <<\_ACEOF >conftest.sed
+s/[\\$]/&&/g;s/;s,x,x,$//
+_ACEOF
+program_transform_name=`echo $program_transform_name | sed -f conftest.sed`
+rm conftest.sed
+
+# expand $ac_aux_dir to an absolute path
+am_aux_dir=`cd $ac_aux_dir && pwd`
+
+test x"${MISSING+set}" = xset || MISSING="\${SHELL} $am_aux_dir/missing"
+# Use eval to expand $SHELL
+if eval "$MISSING --run true"; then
+  am_missing_run="$MISSING --run "
+else
+  am_missing_run=
+  { echo "$as_me:$LINENO: WARNING: \`missing' script is too old or missing" >&5
+echo "$as_me: WARNING: \`missing' script is too old or missing" >&2;}
+fi
+
+if mkdir -p --version . >/dev/null 2>&1 && test ! -d ./--version; then
+  # We used to keeping the `.' as first argument, in order to
+  # allow $(mkdir_p) to be used without argument.  As in
+  #   $(mkdir_p) $(somedir)
+  # where $(somedir) is conditionally defined.  However this is wrong
+  # for two reasons:
+  #  1. if the package is installed by a user who cannot write `.'
+  #     make install will fail,
+  #  2. the above comment should most certainly read
+  #     $(mkdir_p) $(DESTDIR)$(somedir)
+  #     so it does not work when $(somedir) is undefined and
+  #     $(DESTDIR) is not.
+  #  To support the latter case, we have to write
+  #     test -z "$(somedir)" || $(mkdir_p) $(DESTDIR)$(somedir),
+  #  so the `.' trick is pointless.
+  mkdir_p='mkdir -p --'
+else
+  # On NextStep and OpenStep, the `mkdir' command does not
+  # recognize any option.  It will interpret all options as
+  # directories to create, and then abort because `.' already
+  # exists.
+  for d in ./-p ./--version;
+  do
+    test -d $d && rmdir $d
+  done
+  # $(mkinstalldirs) is defined by Automake if mkinstalldirs exists.
+  if test -f "$ac_aux_dir/mkinstalldirs"; then
+    mkdir_p='$(mkinstalldirs)'
+  else
+    mkdir_p='$(install_sh) -d'
+  fi
+fi
+
+for ac_prog in gawk mawk nawk awk
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_AWK+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$AWK"; then
+  ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_AWK="$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+  echo "$as_me:$LINENO: result: $AWK" >&5
+echo "${ECHO_T}$AWK" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  test -n "$AWK" && break
+done
+
+echo "$as_me:$LINENO: checking whether ${MAKE-make} sets \$(MAKE)" >&5
+echo $ECHO_N "checking whether ${MAKE-make} sets \$(MAKE)... $ECHO_C" >&6
+set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y,:./+-,___p_,'`
+if eval "test \"\${ac_cv_prog_make_${ac_make}_set+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.make <<\_ACEOF
+all:
+	@echo 'ac_maketemp="$(MAKE)"'
+_ACEOF
+# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+eval `${MAKE-make} -f conftest.make 2>/dev/null | grep temp=`
+if test -n "$ac_maketemp"; then
+  eval ac_cv_prog_make_${ac_make}_set=yes
+else
+  eval ac_cv_prog_make_${ac_make}_set=no
+fi
+rm -f conftest.make
+fi
+if eval "test \"`echo '$ac_cv_prog_make_'${ac_make}_set`\" = yes"; then
+  echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+  SET_MAKE=
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+  SET_MAKE="MAKE=${MAKE-make}"
+fi
+
+rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+
+# test to see if srcdir already configured
+if test "`cd $srcdir && pwd`" != "`pwd`" &&
+   test -f $srcdir/config.status; then
+  { { echo "$as_me:$LINENO: error: source directory already configured; run \"make distclean\" there first" >&5
+echo "$as_me: error: source directory already configured; run \"make distclean\" there first" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+# test whether we have cygpath
+if test -z "$CYGPATH_W"; then
+  if (cygpath --version) >/dev/null 2>/dev/null; then
+    CYGPATH_W='cygpath -w'
+  else
+    CYGPATH_W=echo
+  fi
+fi
+
+
+# Define the identity of the package.
+ PACKAGE='sed'
+ VERSION='4.1.5'
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE "$PACKAGE"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define VERSION "$VERSION"
+_ACEOF
+
+# Some tools Automake needs.
+
+ACLOCAL=${ACLOCAL-"${am_missing_run}aclocal-${am__api_version}"}
+
+
+AUTOCONF=${AUTOCONF-"${am_missing_run}autoconf"}
+
+
+AUTOMAKE=${AUTOMAKE-"${am_missing_run}automake-${am__api_version}"}
+
+
+AUTOHEADER=${AUTOHEADER-"${am_missing_run}autoheader"}
+
+
+MAKEINFO=${MAKEINFO-"${am_missing_run}makeinfo"}
+
+install_sh=${install_sh-"$am_aux_dir/install-sh"}
+
+# Installed binaries are usually stripped using `strip' when the user
+# run `make install-strip'.  However `strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the `STRIP' environment variable to overrule this program.
+if test "$cross_compiling" != no; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_STRIP+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$STRIP"; then
+  ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+  echo "$as_me:$LINENO: result: $STRIP" >&5
+echo "${ECHO_T}$STRIP" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+  ac_ct_STRIP=$STRIP
+  # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_STRIP+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_STRIP"; then
+  ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_STRIP="strip"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+  test -z "$ac_cv_prog_ac_ct_STRIP" && ac_cv_prog_ac_ct_STRIP=":"
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+  echo "$as_me:$LINENO: result: $ac_ct_STRIP" >&5
+echo "${ECHO_T}$ac_ct_STRIP" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  STRIP=$ac_ct_STRIP
+else
+  STRIP="$ac_cv_prog_STRIP"
+fi
+
+fi
+INSTALL_STRIP_PROGRAM="\${SHELL} \$(install_sh) -c -s"
+
+# We need awk for the "check" target.  The system "awk" is bad on
+# some platforms.
+# Always define AMTAR for backward compatibility.
+
+AMTAR=${AMTAR-"${am_missing_run}tar"}
+
+am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'
+
+
+
+
+
+
+SED_FEATURE_VERSION=4.1
+
+cat >>confdefs.h <<_ACEOF
+#define SED_FEATURE_VERSION "$SED_FEATURE_VERSION"
+_ACEOF
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  CC=$ac_ct_CC
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  CC=$ac_ct_CC
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  test -n "$ac_ct_CC" && break
+done
+
+  CC=$ac_ct_CC
+fi
+
+fi
+
+
+test -z "$CC" && { { echo "$as_me:$LINENO: error: no acceptable C compiler found in \$PATH
+See \`config.log' for more details." >&5
+echo "$as_me: error: no acceptable C compiler found in \$PATH
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+
+# Provide some information about the compiler.
+echo "$as_me:$LINENO:" \
+     "checking for C compiler version" >&5
+ac_compiler=`set X $ac_compile; echo $2`
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler --version </dev/null >&5\"") >&5
+  (eval $ac_compiler --version </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler -v </dev/null >&5\"") >&5
+  (eval $ac_compiler -v </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler -V </dev/null >&5\"") >&5
+  (eval $ac_compiler -V </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+echo "$as_me:$LINENO: checking for C compiler default output file name" >&5
+echo $ECHO_N "checking for C compiler default output file name... $ECHO_C" >&6
+ac_link_default=`echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+if { (eval echo "$as_me:$LINENO: \"$ac_link_default\"") >&5
+  (eval $ac_link_default) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  # Find the output, starting from the most likely.  This scheme is
+# not robust to junk in `.', hence go to wildcards (a.*) only as a last
+# resort.
+
+# Be careful to initialize this variable, since it used to be cached.
+# Otherwise an old cache value of `no' led to `EXEEXT = no' in a Makefile.
+ac_cv_exeext=
+# b.out is created by i960 compilers.
+for ac_file in a_out.exe a.exe conftest.exe a.out conftest a.* conftest.* b.out
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.o | *.obj )
+	;;
+    conftest.$ac_ext )
+	# This is the source file.
+	;;
+    [ab].out )
+	# We found the default executable, but exeext='' is most
+	# certainly right.
+	break;;
+    *.* )
+	ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	# FIXME: I believe we export ac_cv_exeext for Libtool,
+	# but it would be cool to find out if it's true.  Does anybody
+	# maintain Libtool? --akim.
+	export ac_cv_exeext
+	break;;
+    * )
+	break;;
+  esac
+done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { echo "$as_me:$LINENO: error: C compiler cannot create executables
+See \`config.log' for more details." >&5
+echo "$as_me: error: C compiler cannot create executables
+See \`config.log' for more details." >&2;}
+   { (exit 77); exit 77; }; }
+fi
+
+ac_exeext=$ac_cv_exeext
+echo "$as_me:$LINENO: result: $ac_file" >&5
+echo "${ECHO_T}$ac_file" >&6
+
+# Check the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+echo "$as_me:$LINENO: checking whether the C compiler works" >&5
+echo $ECHO_N "checking whether the C compiler works... $ECHO_C" >&6
+# FIXME: These cross compiler hacks should be removed for Autoconf 3.0
+# If not cross compiling, check that we can run a simple program.
+if test "$cross_compiling" != yes; then
+  if { ac_try='./$ac_file'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { echo "$as_me:$LINENO: error: cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+    fi
+  fi
+fi
+echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+
+rm -f a.out a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+# Check the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+echo "$as_me:$LINENO: checking whether we are cross compiling" >&5
+echo $ECHO_N "checking whether we are cross compiling... $ECHO_C" >&6
+echo "$as_me:$LINENO: result: $cross_compiling" >&5
+echo "${ECHO_T}$cross_compiling" >&6
+
+echo "$as_me:$LINENO: checking for suffix of executables" >&5
+echo $ECHO_N "checking for suffix of executables... $ECHO_C" >&6
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	  export ac_cv_exeext
+	  break;;
+    * ) break;;
+  esac
+done
+else
+  { { echo "$as_me:$LINENO: error: cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+rm -f conftest$ac_cv_exeext
+echo "$as_me:$LINENO: result: $ac_cv_exeext" >&5
+echo "${ECHO_T}$ac_cv_exeext" >&6
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+echo "$as_me:$LINENO: checking for suffix of object files" >&5
+echo $ECHO_N "checking for suffix of object files... $ECHO_C" >&6
+if test "${ac_cv_objext+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  for ac_file in `(ls conftest.o conftest.obj; ls conftest.*) 2>/dev/null`; do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { echo "$as_me:$LINENO: error: cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_objext" >&5
+echo "${ECHO_T}$ac_cv_objext" >&6
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+echo "$as_me:$LINENO: checking whether we are using the GNU C compiler" >&5
+echo $ECHO_N "checking whether we are using the GNU C compiler... $ECHO_C" >&6
+if test "${ac_cv_c_compiler_gnu+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_compiler_gnu=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_compiler_gnu=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_compiler_gnu" >&5
+echo "${ECHO_T}$ac_cv_c_compiler_gnu" >&6
+GCC=`test $ac_compiler_gnu = yes && echo yes`
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+CFLAGS="-g"
+echo "$as_me:$LINENO: checking whether $CC accepts -g" >&5
+echo $ECHO_N "checking whether $CC accepts -g... $ECHO_C" >&6
+if test "${ac_cv_prog_cc_g+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_prog_cc_g=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_prog_cc_g=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_prog_cc_g" >&5
+echo "${ECHO_T}$ac_cv_prog_cc_g" >&6
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+echo "$as_me:$LINENO: checking for $CC option to accept ANSI C" >&5
+echo $ECHO_N "checking for $CC option to accept ANSI C... $ECHO_C" >&6
+if test "${ac_cv_prog_cc_stdc+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_prog_cc_stdc=no
+ac_save_CC=$CC
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std1 is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std1.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+# Don't try gcc -ansi; that turns off useful extensions and
+# breaks some systems' header files.
+# AIX			-qlanglvl=ansi
+# Ultrix and OSF/1	-std1
+# HP-UX 10.20 and later	-Ae
+# HP-UX older versions	-Aa -D_HPUX_SOURCE
+# SVR4			-Xc -D__EXTENSIONS__
+for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_prog_cc_stdc=$ac_arg
+break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext
+done
+rm -f conftest.$ac_ext conftest.$ac_objext
+CC=$ac_save_CC
+
+fi
+
+case "x$ac_cv_prog_cc_stdc" in
+  x|xno)
+    echo "$as_me:$LINENO: result: none needed" >&5
+echo "${ECHO_T}none needed" >&6 ;;
+  *)
+    echo "$as_me:$LINENO: result: $ac_cv_prog_cc_stdc" >&5
+echo "${ECHO_T}$ac_cv_prog_cc_stdc" >&6
+    CC="$CC $ac_cv_prog_cc_stdc" ;;
+esac
+
+# Some people use a C++ compiler to compile C.  Since we use `exit',
+# in C++ we need to declare it.  In case someone uses the same compiler
+# for both compiling C and C++ we need to have the C++ compiler decide
+# the declaration of exit, since it's the most demanding environment.
+cat >conftest.$ac_ext <<_ACEOF
+#ifndef __cplusplus
+  choke me
+#endif
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  for ac_declaration in \
+   '' \
+   'extern "C" void std::exit (int) throw (); using std::exit;' \
+   'extern "C" void std::exit (int); using std::exit;' \
+   'extern "C" void exit (int) throw ();' \
+   'extern "C" void exit (int);' \
+   'void exit (int);'
+do
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_declaration
+#include <stdlib.h>
+int
+main ()
+{
+exit (42);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+continue
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_declaration
+int
+main ()
+{
+exit (42);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+done
+rm -f conftest*
+if test -n "$ac_declaration"; then
+  echo '#ifdef __cplusplus' >>confdefs.h
+  echo $ac_declaration      >>confdefs.h
+  echo '#endif'             >>confdefs.h
+fi
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+DEPDIR="${am__leading_dot}deps"
+
+          ac_config_commands="$ac_config_commands depfiles"
+
+
+am_make=${MAKE-make}
+cat > confinc << 'END'
+am__doit:
+	@echo done
+.PHONY: am__doit
+END
+# If we don't find an include directive, just comment out the code.
+echo "$as_me:$LINENO: checking for style of include used by $am_make" >&5
+echo $ECHO_N "checking for style of include used by $am_make... $ECHO_C" >&6
+am__include="#"
+am__quote=
+_am_result=none
+# First try GNU make style include.
+echo "include confinc" > confmf
+# We grep out `Entering directory' and `Leaving directory'
+# messages which can occur if `w' ends up in MAKEFLAGS.
+# In particular we don't look at `^make:' because GNU make might
+# be invoked under some other name (usually "gmake"), in which
+# case it prints its new name instead of `make'.
+if test "`$am_make -s -f confmf 2> /dev/null | grep -v 'ing directory'`" = "done"; then
+   am__include=include
+   am__quote=
+   _am_result=GNU
+fi
+# Now try BSD make style include.
+if test "$am__include" = "#"; then
+   echo '.include "confinc"' > confmf
+   if test "`$am_make -s -f confmf 2> /dev/null`" = "done"; then
+      am__include=.include
+      am__quote="\""
+      _am_result=BSD
+   fi
+fi
+
+
+echo "$as_me:$LINENO: result: $_am_result" >&5
+echo "${ECHO_T}$_am_result" >&6
+rm -f confinc confmf
+
+# Check whether --enable-dependency-tracking or --disable-dependency-tracking was given.
+if test "${enable_dependency_tracking+set}" = set; then
+  enableval="$enable_dependency_tracking"
+
+fi;
+if test "x$enable_dependency_tracking" != xno; then
+  am_depcomp="$ac_aux_dir/depcomp"
+  AMDEPBACKSLASH='\'
+fi
+
+
+if test "x$enable_dependency_tracking" != xno; then
+  AMDEP_TRUE=
+  AMDEP_FALSE='#'
+else
+  AMDEP_TRUE='#'
+  AMDEP_FALSE=
+fi
+
+
+
+
+depcc="$CC"   am_compiler_list=
+
+echo "$as_me:$LINENO: checking dependency style of $depcc" >&5
+echo $ECHO_N "checking dependency style of $depcc... $ECHO_C" >&6
+if test "${am_cv_CC_dependencies_compiler_type+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+  # We make a subdir and do the tests there.  Otherwise we can end up
+  # making bogus files that we don't know about and never remove.  For
+  # instance it was reported that on HP-UX the gcc test will end up
+  # making a dummy file named `D' -- because `-MD' means `put the output
+  # in D'.
+  mkdir conftest.dir
+  # Copy depcomp to subdir because otherwise we won't find it if we're
+  # using a relative directory.
+  cp "$am_depcomp" conftest.dir
+  cd conftest.dir
+  # We will build objects and dependencies in a subdirectory because
+  # it helps to detect inapplicable dependency modes.  For instance
+  # both Tru64's cc and ICC support -MD to output dependencies as a
+  # side effect of compilation, but ICC will put the dependencies in
+  # the current directory while Tru64 will put them in the object
+  # directory.
+  mkdir sub
+
+  am_cv_CC_dependencies_compiler_type=none
+  if test "$am_compiler_list" = ""; then
+     am_compiler_list=`sed -n 's/^#*\([a-zA-Z0-9]*\))$/\1/p' < ./depcomp`
+  fi
+  for depmode in $am_compiler_list; do
+    # Setup a source with many dependencies, because some compilers
+    # like to wrap large dependency lists on column 80 (with \), and
+    # we should not choose a depcomp mode which is confused by this.
+    #
+    # We need to recreate these files for each test, as the compiler may
+    # overwrite some of them when testing with obscure command lines.
+    # This happens at least with the AIX C compiler.
+    : > sub/conftest.c
+    for i in 1 2 3 4 5 6; do
+      echo '#include "conftst'$i'.h"' >> sub/conftest.c
+      # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+      # Solaris 8's {/usr,}/bin/sh.
+      touch sub/conftst$i.h
+    done
+    echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+    case $depmode in
+    nosideeffect)
+      # after this tag, mechanisms are not by side-effect, so they'll
+      # only be used when explicitly requested
+      if test "x$enable_dependency_tracking" = xyes; then
+	continue
+      else
+	break
+      fi
+      ;;
+    none) break ;;
+    esac
+    # We check with `-c' and `-o' for the sake of the "dashmstdout"
+    # mode.  It turns out that the SunPro C++ compiler does not properly
+    # handle `-M -o', and we need to detect this.
+    if depmode=$depmode \
+       source=sub/conftest.c object=sub/conftest.${OBJEXT-o} \
+       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+       $SHELL ./depcomp $depcc -c -o sub/conftest.${OBJEXT-o} sub/conftest.c \
+         >/dev/null 2>conftest.err &&
+       grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep sub/conftest.${OBJEXT-o} sub/conftest.Po > /dev/null 2>&1 &&
+       ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+      # icc doesn't choke on unknown options, it will just issue warnings
+      # or remarks (even with -Werror).  So we grep stderr for any message
+      # that says an option was ignored or not supported.
+      # When given -MP, icc 7.0 and 7.1 complain thusly:
+      #   icc: Command line warning: ignoring option '-M'; no argument required
+      # The diagnosis changed in icc 8.0:
+      #   icc: Command line remark: option '-MP' not supported
+      if (grep 'ignoring option' conftest.err ||
+          grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+        am_cv_CC_dependencies_compiler_type=$depmode
+        break
+      fi
+    fi
+  done
+
+  cd ..
+  rm -rf conftest.dir
+else
+  am_cv_CC_dependencies_compiler_type=none
+fi
+
+fi
+echo "$as_me:$LINENO: result: $am_cv_CC_dependencies_compiler_type" >&5
+echo "${ECHO_T}$am_cv_CC_dependencies_compiler_type" >&6
+CCDEPMODE=depmode=$am_cv_CC_dependencies_compiler_type
+
+
+
+if
+  test "x$enable_dependency_tracking" != xno \
+  && test "$am_cv_CC_dependencies_compiler_type" = gcc3; then
+  am__fastdepCC_TRUE=
+  am__fastdepCC_FALSE='#'
+else
+  am__fastdepCC_TRUE='#'
+  am__fastdepCC_FALSE=
+fi
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_RANLIB+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+  echo "$as_me:$LINENO: result: $RANLIB" >&5
+echo "${ECHO_T}$RANLIB" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+  ac_ct_RANLIB=$RANLIB
+  # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_RANLIB+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_RANLIB"; then
+  ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_RANLIB="ranlib"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+  test -z "$ac_cv_prog_ac_ct_RANLIB" && ac_cv_prog_ac_ct_RANLIB=":"
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+  echo "$as_me:$LINENO: result: $ac_ct_RANLIB" >&5
+echo "${ECHO_T}$ac_ct_RANLIB" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  RANLIB=$ac_ct_RANLIB
+else
+  RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+
+cat >>confdefs.h <<\_ACEOF
+#define _GNU_SOURCE 1
+_ACEOF
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+echo "$as_me:$LINENO: checking how to run the C preprocessor" >&5
+echo $ECHO_N "checking how to run the C preprocessor... $ECHO_C" >&6
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+  if test "${ac_cv_prog_CPP+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+      # Double quotes because CPP needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether non-existent headers
+  # can be detected and how.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  # Broken: success on invalid input.
+continue
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then
+  break
+fi
+
+    done
+    ac_cv_prog_CPP=$CPP
+
+fi
+  CPP=$ac_cv_prog_CPP
+else
+  ac_cv_prog_CPP=$CPP
+fi
+echo "$as_me:$LINENO: result: $CPP" >&5
+echo "${ECHO_T}$CPP" >&6
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether non-existent headers
+  # can be detected and how.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  # Broken: success on invalid input.
+continue
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then
+  :
+else
+  { { echo "$as_me:$LINENO: error: C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." >&5
+echo "$as_me: error: C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+echo "$as_me:$LINENO: checking for egrep" >&5
+echo $ECHO_N "checking for egrep... $ECHO_C" >&6
+if test "${ac_cv_prog_egrep+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if echo a | (grep -E '(a|b)') >/dev/null 2>&1
+    then ac_cv_prog_egrep='grep -E'
+    else ac_cv_prog_egrep='egrep'
+    fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_prog_egrep" >&5
+echo "${ECHO_T}$ac_cv_prog_egrep" >&6
+ EGREP=$ac_cv_prog_egrep
+
+
+
+echo "$as_me:$LINENO: checking for AIX" >&5
+echo $ECHO_N "checking for AIX... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifdef _AIX
+  yes
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "yes" >/dev/null 2>&1; then
+  echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+cat >>confdefs.h <<\_ACEOF
+#define _ALL_SOURCE 1
+_ACEOF
+
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+rm -f conftest*
+
+
+echo "$as_me:$LINENO: checking for ANSI C header files" >&5
+echo $ECHO_N "checking for ANSI C header files... $ECHO_C" >&6
+if test "${ac_cv_header_stdc+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_header_stdc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_header_stdc=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "memchr" >/dev/null 2>&1; then
+  :
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "free" >/dev/null 2>&1; then
+  :
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+  if test "$cross_compiling" = yes; then
+  :
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ctype.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+		   (('a' <= (c) && (c) <= 'i') \
+		     || ('j' <= (c) && (c) <= 'r') \
+		     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+	|| toupper (i) != TOUPPER (i))
+      exit(2);
+  exit (0);
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_cv_header_stdc=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_stdc" >&5
+echo "${ECHO_T}$ac_cv_header_stdc" >&6
+if test $ac_cv_header_stdc = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define STDC_HEADERS 1
+_ACEOF
+
+fi
+
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+
+
+
+
+
+
+
+
+
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+		  inttypes.h stdint.h unistd.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_Header=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_Header=no"
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+if test "${ac_cv_header_minix_config_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for minix/config.h" >&5
+echo $ECHO_N "checking for minix/config.h... $ECHO_C" >&6
+if test "${ac_cv_header_minix_config_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_minix_config_h" >&5
+echo "${ECHO_T}$ac_cv_header_minix_config_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking minix/config.h usability" >&5
+echo $ECHO_N "checking minix/config.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <minix/config.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking minix/config.h presence" >&5
+echo $ECHO_N "checking minix/config.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <minix/config.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: minix/config.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: minix/config.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: minix/config.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: minix/config.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: minix/config.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: minix/config.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: minix/config.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: minix/config.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: minix/config.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: minix/config.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: minix/config.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: minix/config.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: minix/config.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: minix/config.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: minix/config.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: minix/config.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to bonzini@gnu.org ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for minix/config.h" >&5
+echo $ECHO_N "checking for minix/config.h... $ECHO_C" >&6
+if test "${ac_cv_header_minix_config_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_minix_config_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_minix_config_h" >&5
+echo "${ECHO_T}$ac_cv_header_minix_config_h" >&6
+
+fi
+if test $ac_cv_header_minix_config_h = yes; then
+  MINIX=yes
+else
+  MINIX=
+fi
+
+
+if test "$MINIX" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define _POSIX_SOURCE 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define _POSIX_1_SOURCE 2
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define _MINIX 1
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for library containing strerror" >&5
+echo $ECHO_N "checking for library containing strerror... $ECHO_C" >&6
+if test "${ac_cv_search_strerror+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+ac_cv_search_strerror=no
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char strerror ();
+int
+main ()
+{
+strerror ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_search_strerror="none required"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+if test "$ac_cv_search_strerror" = no; then
+  for ac_lib in cposix; do
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char strerror ();
+int
+main ()
+{
+strerror ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_search_strerror="-l$ac_lib"
+break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+  done
+fi
+LIBS=$ac_func_search_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_search_strerror" >&5
+echo "${ECHO_T}$ac_cv_search_strerror" >&6
+if test "$ac_cv_search_strerror" != no; then
+  test "$ac_cv_search_strerror" = "none required" || LIBS="$ac_cv_search_strerror $LIBS"
+
+fi
+
+# Check whether --enable-largefile or --disable-largefile was given.
+if test "${enable_largefile+set}" = set; then
+  enableval="$enable_largefile"
+
+fi;
+if test "$enable_largefile" != no; then
+
+  echo "$as_me:$LINENO: checking for special C compiler options needed for large files" >&5
+echo $ECHO_N "checking for special C compiler options needed for large files... $ECHO_C" >&6
+if test "${ac_cv_sys_largefile_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_sys_largefile_CC=no
+     if test "$GCC" != yes; then
+       ac_save_CC=$CC
+       while :; do
+     	 # IRIX 6.2 and later do not support large files by default,
+     	 # so use the C compiler's -n32 option if that helps.
+	 cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+     	 rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext
+     	 CC="$CC -n32"
+     	 rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_sys_largefile_CC=' -n32'; break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext
+	 break
+       done
+       CC=$ac_save_CC
+       rm -f conftest.$ac_ext
+    fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_sys_largefile_CC" >&5
+echo "${ECHO_T}$ac_cv_sys_largefile_CC" >&6
+  if test "$ac_cv_sys_largefile_CC" != no; then
+    CC=$CC$ac_cv_sys_largefile_CC
+  fi
+
+  echo "$as_me:$LINENO: checking for _FILE_OFFSET_BITS value needed for large files" >&5
+echo $ECHO_N "checking for _FILE_OFFSET_BITS value needed for large files... $ECHO_C" >&6
+if test "${ac_cv_sys_file_offset_bits+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  while :; do
+  ac_cv_sys_file_offset_bits=no
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#define _FILE_OFFSET_BITS 64
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_sys_file_offset_bits=64; break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  break
+done
+fi
+echo "$as_me:$LINENO: result: $ac_cv_sys_file_offset_bits" >&5
+echo "${ECHO_T}$ac_cv_sys_file_offset_bits" >&6
+if test "$ac_cv_sys_file_offset_bits" != no; then
+
+cat >>confdefs.h <<_ACEOF
+#define _FILE_OFFSET_BITS $ac_cv_sys_file_offset_bits
+_ACEOF
+
+fi
+rm -f conftest*
+  echo "$as_me:$LINENO: checking for _LARGE_FILES value needed for large files" >&5
+echo $ECHO_N "checking for _LARGE_FILES value needed for large files... $ECHO_C" >&6
+if test "${ac_cv_sys_large_files+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  while :; do
+  ac_cv_sys_large_files=no
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#define _LARGE_FILES 1
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_sys_large_files=1; break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  break
+done
+fi
+echo "$as_me:$LINENO: result: $ac_cv_sys_large_files" >&5
+echo "${ECHO_T}$ac_cv_sys_large_files" >&6
+if test "$ac_cv_sys_large_files" != no; then
+
+cat >>confdefs.h <<_ACEOF
+#define _LARGE_FILES $ac_cv_sys_large_files
+_ACEOF
+
+fi
+rm -f conftest*
+fi
+
+echo "$as_me:$LINENO: checking for long file names" >&5
+echo $ECHO_N "checking for long file names... $ECHO_C" >&6
+if test "${ac_cv_sys_long_file_names+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_sys_long_file_names=yes
+# Test for long file names in all the places we know might matter:
+#      .		the current directory, where building will happen
+#      $prefix/lib	where we will be installing things
+#      $exec_prefix/lib	likewise
+# eval it to expand exec_prefix.
+#      $TMPDIR		if set, where it might want to write temporary files
+# if $TMPDIR is not set:
+#      /tmp		where it might want to write temporary files
+#      /var/tmp		likewise
+#      /usr/tmp		likewise
+if test -n "$TMPDIR" && test -d "$TMPDIR" && test -w "$TMPDIR"; then
+  ac_tmpdirs=$TMPDIR
+else
+  ac_tmpdirs='/tmp /var/tmp /usr/tmp'
+fi
+for ac_dir in  . $ac_tmpdirs `eval echo $prefix/lib $exec_prefix/lib` ; do
+  test -d $ac_dir || continue
+  test -w $ac_dir || continue # It is less confusing to not echo anything here.
+  ac_xdir=$ac_dir/cf$$
+  (umask 077 && mkdir $ac_xdir 2>/dev/null) || continue
+  ac_tf1=$ac_xdir/conftest9012345
+  ac_tf2=$ac_xdir/conftest9012346
+  (echo 1 >$ac_tf1) 2>/dev/null
+  (echo 2 >$ac_tf2) 2>/dev/null
+  ac_val=`cat $ac_tf1 2>/dev/null`
+  if test ! -f $ac_tf1 || test "$ac_val" != 1; then
+    ac_cv_sys_long_file_names=no
+    rm -rf $ac_xdir 2>/dev/null
+    break
+  fi
+  rm -rf $ac_xdir 2>/dev/null
+done
+fi
+echo "$as_me:$LINENO: result: $ac_cv_sys_long_file_names" >&5
+echo "${ECHO_T}$ac_cv_sys_long_file_names" >&6
+if test $ac_cv_sys_long_file_names = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_LONG_FILE_NAMES 1
+_ACEOF
+
+fi
+
+
+echo "$as_me:$LINENO: checking whether -lcP is needed" >&5
+echo $ECHO_N "checking whether -lcP is needed... $ECHO_C" >&6
+if test "${sed_cv_libcp_needed+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+if test "$cross_compiling" = yes; then
+  sed_cv_libcp_needed="assuming no"
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#include <errno.h>
+
+int main()
+{
+  FILE *fp;
+  int result;
+  errno = 0;
+  fp = fopen ("conftest.c", "r");
+  if (!fp) return 0;	   /* error, assume not needed */
+  result = fflush (fp) == EOF && errno == 0;
+  fclose (fp);
+  return result;
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  sed_cv_libcp_needed=no
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+sed_cv_libcp_needed=yes
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+
+fi
+echo "$as_me:$LINENO: result: $sed_cv_libcp_needed" >&5
+echo "${ECHO_T}$sed_cv_libcp_needed" >&6
+if test "$sed_cv_libcp_needed" = yes; then
+  LIBS="-lcP $LIBS"
+fi
+
+
+
+
+
+
+ac_header_dirent=no
+for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h; do
+  as_ac_Header=`echo "ac_cv_header_dirent_$ac_hdr" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_hdr that defines DIR" >&5
+echo $ECHO_N "checking for $ac_hdr that defines DIR... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <$ac_hdr>
+
+int
+main ()
+{
+if ((DIR *) 0)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_Header=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_Header=no"
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_hdr" | $as_tr_cpp` 1
+_ACEOF
+
+ac_header_dirent=$ac_hdr; break
+fi
+
+done
+# Two versions of opendir et al. are in -ldir and -lx on SCO Xenix.
+if test $ac_header_dirent = dirent.h; then
+  echo "$as_me:$LINENO: checking for library containing opendir" >&5
+echo $ECHO_N "checking for library containing opendir... $ECHO_C" >&6
+if test "${ac_cv_search_opendir+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+ac_cv_search_opendir=no
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char opendir ();
+int
+main ()
+{
+opendir ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_search_opendir="none required"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+if test "$ac_cv_search_opendir" = no; then
+  for ac_lib in dir; do
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char opendir ();
+int
+main ()
+{
+opendir ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_search_opendir="-l$ac_lib"
+break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+  done
+fi
+LIBS=$ac_func_search_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_search_opendir" >&5
+echo "${ECHO_T}$ac_cv_search_opendir" >&6
+if test "$ac_cv_search_opendir" != no; then
+  test "$ac_cv_search_opendir" = "none required" || LIBS="$ac_cv_search_opendir $LIBS"
+
+fi
+
+else
+  echo "$as_me:$LINENO: checking for library containing opendir" >&5
+echo $ECHO_N "checking for library containing opendir... $ECHO_C" >&6
+if test "${ac_cv_search_opendir+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+ac_cv_search_opendir=no
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char opendir ();
+int
+main ()
+{
+opendir ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_search_opendir="none required"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+if test "$ac_cv_search_opendir" = no; then
+  for ac_lib in x; do
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char opendir ();
+int
+main ()
+{
+opendir ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_search_opendir="-l$ac_lib"
+break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+  done
+fi
+LIBS=$ac_func_search_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_search_opendir" >&5
+echo "${ECHO_T}$ac_cv_search_opendir" >&6
+if test "$ac_cv_search_opendir" != no; then
+  test "$ac_cv_search_opendir" = "none required" || LIBS="$ac_cv_search_opendir $LIBS"
+
+fi
+
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_header in io.h limits.h locale.h stdarg.h alloca.h stddef.h errno.h \
+		 wchar.h wctype.h sys/file.h mcheck.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_Header=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_Header=no"
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+echo "$as_me:$LINENO: checking for an ANSI C-conforming const" >&5
+echo $ECHO_N "checking for an ANSI C-conforming const... $ECHO_C" >&6
+if test "${ac_cv_c_const+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+/* FIXME: Include the comments suggested by Paul. */
+#ifndef __cplusplus
+  /* Ultrix mips cc rejects this.  */
+  typedef int charset[2];
+  const charset x;
+  /* SunOS 4.1.1 cc rejects this.  */
+  char const *const *ccp;
+  char **p;
+  /* NEC SVR4.0.2 mips cc rejects this.  */
+  struct point {int x, y;};
+  static struct point const zero = {0,0};
+  /* AIX XL C 1.02.0.0 rejects this.
+     It does not let you subtract one const X* pointer from another in
+     an arm of an if-expression whose if-part is not a constant
+     expression */
+  const char *g = "string";
+  ccp = &g + (g ? g-g : 0);
+  /* HPUX 7.0 cc rejects these. */
+  ++ccp;
+  p = (char**) ccp;
+  ccp = (char const *const *) p;
+  { /* SCO 3.2v4 cc rejects this.  */
+    char *t;
+    char const *s = 0 ? (char *) 0 : (char const *) 0;
+
+    *t++ = 0;
+  }
+  { /* Someone thinks the Sun supposedly-ANSI compiler will reject this.  */
+    int x[] = {25, 17};
+    const int *foo = &x[0];
+    ++foo;
+  }
+  { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */
+    typedef const int *iptr;
+    iptr p = 0;
+    ++p;
+  }
+  { /* AIX XL C 1.02.0.0 rejects this saying
+       "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
+    struct s { int j; const int *ap[3]; };
+    struct s *b; b->j = 5;
+  }
+  { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
+    const int foo = 10;
+  }
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_c_const=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_c_const=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_const" >&5
+echo "${ECHO_T}$ac_cv_c_const" >&6
+if test $ac_cv_c_const = no; then
+
+cat >>confdefs.h <<\_ACEOF
+#define const
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for size_t" >&5
+echo $ECHO_N "checking for size_t... $ECHO_C" >&6
+if test "${ac_cv_type_size_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((size_t *) 0)
+  return 0;
+if (sizeof (size_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_size_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_size_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_size_t" >&5
+echo "${ECHO_T}$ac_cv_type_size_t" >&6
+if test $ac_cv_type_size_t = yes; then
+  :
+else
+
+cat >>confdefs.h <<_ACEOF
+#define size_t unsigned
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for ssize_t" >&5
+echo $ECHO_N "checking for ssize_t... $ECHO_C" >&6
+if test "${ac_cv_type_ssize_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((ssize_t *) 0)
+  return 0;
+if (sizeof (ssize_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_ssize_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_ssize_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_ssize_t" >&5
+echo "${ECHO_T}$ac_cv_type_ssize_t" >&6
+if test $ac_cv_type_ssize_t = yes; then
+  :
+else
+
+cat >>confdefs.h <<_ACEOF
+#define ssize_t int
+_ACEOF
+
+fi
+
+
+echo "$as_me:$LINENO: checking for stdbool.h that conforms to C99" >&5
+echo $ECHO_N "checking for stdbool.h that conforms to C99... $ECHO_C" >&6
+if test "${ac_cv_header_stdbool_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	  #include <stdbool.h>
+	  #ifndef bool
+	   "error: bool is not defined"
+	  #endif
+	  #ifndef false
+	   "error: false is not defined"
+	  #endif
+	  #if false
+	   "error: false is not 0"
+	  #endif
+	  #ifndef true
+	   "error: false is not defined"
+	  #endif
+	  #if true != 1
+	   "error: true is not 1"
+	  #endif
+	  #ifndef __bool_true_false_are_defined
+	   "error: __bool_true_false_are_defined is not defined"
+	  #endif
+
+	  struct s { _Bool s: 1; _Bool t; } s;
+
+	  char a[true == 1 ? 1 : -1];
+	  char b[false == 0 ? 1 : -1];
+	  char c[__bool_true_false_are_defined == 1 ? 1 : -1];
+	  char d[(bool) -0.5 == true ? 1 : -1];
+	  bool e = &s;
+	  char f[(_Bool) -0.0 == false ? 1 : -1];
+	  char g[true];
+	  char h[sizeof (_Bool)];
+	  char i[sizeof s.t];
+
+int
+main ()
+{
+ return !a + !b + !c + !d + !e + !f + !g + !h + !i;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_header_stdbool_h=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_header_stdbool_h=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_stdbool_h" >&5
+echo "${ECHO_T}$ac_cv_header_stdbool_h" >&6
+   echo "$as_me:$LINENO: checking for _Bool" >&5
+echo $ECHO_N "checking for _Bool... $ECHO_C" >&6
+if test "${ac_cv_type__Bool+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((_Bool *) 0)
+  return 0;
+if (sizeof (_Bool))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type__Bool=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type__Bool=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type__Bool" >&5
+echo "${ECHO_T}$ac_cv_type__Bool" >&6
+if test $ac_cv_type__Bool = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE__BOOL 1
+_ACEOF
+
+
+fi
+
+   if test $ac_cv_header_stdbool_h = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_STDBOOL_H 1
+_ACEOF
+
+   fi
+if test "$ac_cv_type__Bool" = no; then
+  HAVE__BOOL=0
+else
+  HAVE__BOOL=1
+fi
+
+if test "$ac_cv_header_stdbool_h" = no; then
+            ac_config_files="$ac_config_files lib/stdbool.h:lib/stdbool_.h"
+
+fi
+
+# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
+# for constant arguments.  Useless!
+echo "$as_me:$LINENO: checking for working alloca.h" >&5
+echo $ECHO_N "checking for working alloca.h... $ECHO_C" >&6
+if test "${ac_cv_working_alloca_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <alloca.h>
+int
+main ()
+{
+char *p = (char *) alloca (2 * sizeof (int));
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_working_alloca_h=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_working_alloca_h=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_working_alloca_h" >&5
+echo "${ECHO_T}$ac_cv_working_alloca_h" >&6
+if test $ac_cv_working_alloca_h = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_ALLOCA_H 1
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for alloca" >&5
+echo $ECHO_N "checking for alloca... $ECHO_C" >&6
+if test "${ac_cv_func_alloca_works+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifdef __GNUC__
+# define alloca __builtin_alloca
+#else
+# ifdef _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# else
+#  if HAVE_ALLOCA_H
+#   include <alloca.h>
+#  else
+#   ifdef _AIX
+ #pragma alloca
+#   else
+#    ifndef alloca /* predefined by HP cc +Olibcalls */
+char *alloca ();
+#    endif
+#   endif
+#  endif
+# endif
+#endif
+
+int
+main ()
+{
+char *p = (char *) alloca (1);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_alloca_works=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_alloca_works=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_alloca_works" >&5
+echo "${ECHO_T}$ac_cv_func_alloca_works" >&6
+
+if test $ac_cv_func_alloca_works = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_ALLOCA 1
+_ACEOF
+
+else
+  # The SVR3 libPW and SVR4 libucb both contain incompatible functions
+# that cause trouble.  Some versions do not even contain alloca or
+# contain a buggy version.  If you still want to use their alloca,
+# use ar to extract alloca.o from them instead of compiling alloca.c.
+
+ALLOCA=alloca.$ac_objext
+
+cat >>confdefs.h <<\_ACEOF
+#define C_ALLOCA 1
+_ACEOF
+
+
+echo "$as_me:$LINENO: checking whether \`alloca.c' needs Cray hooks" >&5
+echo $ECHO_N "checking whether \`alloca.c' needs Cray hooks... $ECHO_C" >&6
+if test "${ac_cv_os_cray+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#if defined(CRAY) && ! defined(CRAY2)
+webecray
+#else
+wenotbecray
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "webecray" >/dev/null 2>&1; then
+  ac_cv_os_cray=yes
+else
+  ac_cv_os_cray=no
+fi
+rm -f conftest*
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_os_cray" >&5
+echo "${ECHO_T}$ac_cv_os_cray" >&6
+if test $ac_cv_os_cray = yes; then
+  for ac_func in _getb67 GETB67 getb67; do
+    as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define CRAY_STACKSEG_END $ac_func
+_ACEOF
+
+    break
+fi
+
+  done
+fi
+
+echo "$as_me:$LINENO: checking stack direction for C alloca" >&5
+echo $ECHO_N "checking stack direction for C alloca... $ECHO_C" >&6
+if test "${ac_cv_c_stack_direction+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test "$cross_compiling" = yes; then
+  ac_cv_c_stack_direction=0
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+int
+find_stack_direction ()
+{
+  static char *addr = 0;
+  auto char dummy;
+  if (addr == 0)
+    {
+      addr = &dummy;
+      return find_stack_direction ();
+    }
+  else
+    return (&dummy > addr) ? 1 : -1;
+}
+
+int
+main ()
+{
+  exit (find_stack_direction () < 0);
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_c_stack_direction=1
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_cv_c_stack_direction=-1
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_stack_direction" >&5
+echo "${ECHO_T}$ac_cv_c_stack_direction" >&6
+
+cat >>confdefs.h <<_ACEOF
+#define STACK_DIRECTION $ac_cv_c_stack_direction
+_ACEOF
+
+
+fi
+
+
+for ac_func in vprintf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+echo "$as_me:$LINENO: checking for _doprnt" >&5
+echo $ECHO_N "checking for _doprnt... $ECHO_C" >&6
+if test "${ac_cv_func__doprnt+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define _doprnt to an innocuous variant, in case <limits.h> declares _doprnt.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define _doprnt innocuous__doprnt
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char _doprnt (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef _doprnt
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char _doprnt ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub__doprnt) || defined (__stub____doprnt)
+choke me
+#else
+char (*f) () = _doprnt;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != _doprnt;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func__doprnt=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func__doprnt=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func__doprnt" >&5
+echo "${ECHO_T}$ac_cv_func__doprnt" >&6
+if test $ac_cv_func__doprnt = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_DOPRNT 1
+_ACEOF
+
+fi
+
+fi
+done
+
+
+  am_getline_needs_run_time_check=no
+  echo "$as_me:$LINENO: checking for getline" >&5
+echo $ECHO_N "checking for getline... $ECHO_C" >&6
+if test "${ac_cv_func_getline+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define getline to an innocuous variant, in case <limits.h> declares getline.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define getline innocuous_getline
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char getline (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef getline
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char getline ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_getline) || defined (__stub___getline)
+choke me
+#else
+char (*f) () = getline;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != getline;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_getline=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_getline=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_getline" >&5
+echo "${ECHO_T}$ac_cv_func_getline" >&6
+if test $ac_cv_func_getline = yes; then
+  		am_getline_needs_run_time_check=yes
+else
+  am_cv_func_working_getline=no
+fi
+
+  if test $am_getline_needs_run_time_check = yes; then
+    echo "$as_me:$LINENO: checking for working getline function" >&5
+echo $ECHO_N "checking for working getline function... $ECHO_C" >&6
+if test "${am_cv_func_working_getline+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  echo fooN |tr -d '\012'|tr N '\012' > conftest.data
+    if test "$cross_compiling" = yes; then
+  am_cv_func_working_getline=no
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#    include <stdio.h>
+#    include <sys/types.h>
+#    include <string.h>
+    int main ()
+    { /* Based on a test program from Karl Heuer.  */
+      char *line = NULL;
+      size_t siz = 0;
+      int len;
+      FILE *in = fopen ("./conftest.data", "r");
+      if (!in)
+	return 1;
+      len = getline (&line, &siz, in);
+      exit ((len == 4 && line && strcmp (line, "foo\n") == 0) ? 0 : 1);
+    }
+
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  am_cv_func_working_getline=yes
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+am_cv_func_working_getline=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+echo "$as_me:$LINENO: result: $am_cv_func_working_getline" >&5
+echo "${ECHO_T}$am_cv_func_working_getline" >&6
+  fi
+
+  if test $am_cv_func_working_getline = no; then
+    case $LIBOBJS in
+    "getline.$ac_objext"   | \
+  *" getline.$ac_objext"   | \
+    "getline.$ac_objext "* | \
+  *" getline.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS getline.$ac_objext" ;;
+esac
+
+  fi
+
+echo "$as_me:$LINENO: checking for obstacks" >&5
+echo $ECHO_N "checking for obstacks... $ECHO_C" >&6
+if test "${ac_cv_func_obstack+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include "obstack.h"
+int
+main ()
+{
+struct obstack *mem; obstack_free(mem,(char *) 0)
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_obstack=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_obstack=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_obstack" >&5
+echo "${ECHO_T}$ac_cv_func_obstack" >&6
+if test $ac_cv_func_obstack = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_OBSTACK 1
+_ACEOF
+
+else
+  case $LIBOBJS in
+    "obstack.$ac_objext"   | \
+  *" obstack.$ac_objext"   | \
+    "obstack.$ac_objext "* | \
+  *" obstack.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS obstack.$ac_objext" ;;
+esac
+
+fi
+
+
+  echo "$as_me:$LINENO: checking whether mbrtowc and mbstate_t are properly declared" >&5
+echo $ECHO_N "checking whether mbrtowc and mbstate_t are properly declared... $ECHO_C" >&6
+if test "${ac_cv_func_mbrtowc+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <wchar.h>
+int
+main ()
+{
+mbstate_t state; return ! (sizeof state && mbrtowc);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_mbrtowc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_mbrtowc=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_mbrtowc" >&5
+echo "${ECHO_T}$ac_cv_func_mbrtowc" >&6
+  if test $ac_cv_func_mbrtowc = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_MBRTOWC 1
+_ACEOF
+
+  fi
+
+echo "$as_me:$LINENO: checking for mbstate_t" >&5
+echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
+if test "${ac_cv_type_mbstate_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#	    include <wchar.h>
+int
+main ()
+{
+mbstate_t x; return sizeof x;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_mbstate_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_mbstate_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_mbstate_t" >&5
+echo "${ECHO_T}$ac_cv_type_mbstate_t" >&6
+   if test $ac_cv_type_mbstate_t = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_MBSTATE_T 1
+_ACEOF
+
+   else
+
+cat >>confdefs.h <<\_ACEOF
+#define mbstate_t int
+_ACEOF
+
+   fi
+
+
+
+
+for ac_func in strverscmp
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+  case $LIBOBJS in
+    "$ac_func.$ac_objext"   | \
+  *" $ac_func.$ac_objext"   | \
+    "$ac_func.$ac_objext "* | \
+  *" $ac_func.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS $ac_func.$ac_objext" ;;
+esac
+
+fi
+done
+
+
+  if test $ac_cv_func_strverscmp = no; then
+
+  :
+
+  fi
+
+
+
+
+
+
+for ac_func in memchr memcmp memmove strerror mkstemp
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+  case $LIBOBJS in
+    "$ac_func.$ac_objext"   | \
+  *" $ac_func.$ac_objext"   | \
+    "$ac_func.$ac_objext "* | \
+  *" $ac_func.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS $ac_func.$ac_objext" ;;
+esac
+
+fi
+done
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_func in isatty bcopy bzero isascii memcpy memset strchr strtoul popen \
+		pathconf isblank fchown fchmod setlocale wcrtomb wcscoll btowc
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+# Check whether --enable-i18n or --disable-i18n was given.
+if test "${enable_i18n+set}" = set; then
+  enableval="$enable_i18n"
+
+else
+  enable_i18n=yes
+fi;
+if test "x$enable_i18n" = xno; then
+  ac_cv_func_wcscoll=false
+fi
+
+
+# Check whether --with-included-regex or --without-included-regex was given.
+if test "${with_included_regex+set}" = set; then
+  withval="$with_included_regex"
+
+else
+  with_included_regex=yes
+fi;
+
+if test "x$with_included_regex" = xno; then
+
+for ac_header in regex.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to bonzini@gnu.org ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+echo "$as_me:$LINENO: checking for re_search in -lregex" >&5
+echo $ECHO_N "checking for re_search in -lregex... $ECHO_C" >&6
+if test "${ac_cv_lib_regex_re_search+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lregex  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char re_search ();
+int
+main ()
+{
+re_search ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_regex_re_search=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_regex_re_search=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_regex_re_search" >&5
+echo "${ECHO_T}$ac_cv_lib_regex_re_search" >&6
+if test $ac_cv_lib_regex_re_search = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBREGEX 1
+_ACEOF
+
+  LIBS="-lregex $LIBS"
+
+fi
+
+  echo "$as_me:$LINENO: checking for re_search" >&5
+echo $ECHO_N "checking for re_search... $ECHO_C" >&6
+if test "${ac_cv_func_re_search+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define re_search to an innocuous variant, in case <limits.h> declares re_search.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define re_search innocuous_re_search
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char re_search (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef re_search
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char re_search ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_re_search) || defined (__stub___re_search)
+choke me
+#else
+char (*f) () = re_search;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != re_search;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_re_search=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_re_search=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_re_search" >&5
+echo "${ECHO_T}$ac_cv_func_re_search" >&6
+
+  if test $ac_cv_header_regex_h = no || test $ac_cv_func_re_search = no; then
+    { echo "$as_me:$LINENO: WARNING: GNU regex not found, falling back to the included version" >&5
+echo "$as_me: WARNING: GNU regex not found, falling back to the included version" >&2;}
+    with_included_regex=yes
+  fi
+fi
+
+# Check whether --enable-regex-tests or --disable-regex-tests was given.
+if test "${enable_regex_tests+set}" = set; then
+  enableval="$enable_regex_tests"
+  if test "x$with_included_regex" = xno; then
+  enable_regex_tests=no
+fi
+else
+  enable_regex_tests=$with_included_regex
+fi;
+
+
+
+if test "x$enable_regex_tests" != xno; then
+  TEST_REGEX_TRUE=
+  TEST_REGEX_FALSE='#'
+else
+  TEST_REGEX_TRUE='#'
+  TEST_REGEX_FALSE=
+fi
+
+if test "x$with_included_regex" != xno; then
+            ac_config_links="$ac_config_links lib/regex.h:lib/regex_.h"
+
+  case $LIBOBJS in
+    "regex.$ac_objext"   | \
+  *" regex.$ac_objext"   | \
+    "regex.$ac_objext "* | \
+  *" regex.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS regex.$ac_objext" ;;
+esac
+
+fi
+if test "x$enable_regex_tests" = xyes; then
+
+cat >>confdefs.h <<_ACEOF
+#define _REGEX_RE_COMP 1
+_ACEOF
+
+fi
+
+# Check whether --enable-html or --disable-html was given.
+if test "${enable_html+set}" = set; then
+  enableval="$enable_html"
+
+else
+  enable_html=no
+fi;
+
+
+
+if test "x$enable_html" != xno; then
+  BUILD_HTML_TRUE=
+  BUILD_HTML_FALSE='#'
+else
+  BUILD_HTML_TRUE='#'
+  BUILD_HTML_FALSE=
+fi
+
+
+: ${TEXI2HTML=texi2html -monolithic}
+
+
+echo "$as_me:$LINENO: checking how to build HTML documentation" >&5
+echo $ECHO_N "checking how to build HTML documentation... $ECHO_C" >&6
+if eval $am_missing_run makeinfo --help 2>&1 | grep .-html > /dev/null; then
+  echo "$as_me:$LINENO: result: with makeinfo" >&5
+echo "${ECHO_T}with makeinfo" >&6
+  enable_html=makeinfo
+else
+  if $TEXI2HTML --help 2>&1 | grep monolithic > /dev/null; then
+    echo "$as_me:$LINENO: result: with texi2html" >&5
+echo "${ECHO_T}with texi2html" >&6
+    enable_html=texi2html
+  else
+    echo "$as_me:$LINENO: result: not built" >&5
+echo "${ECHO_T}not built" >&6
+    if test "x$enable_html" != xno; then
+      { { echo "$as_me:$LINENO: error: cannot build HTML documentation" >&5
+echo "$as_me: error: cannot build HTML documentation" >&2;}
+   { (exit install makeinfo 4.0 or texi2html); exit install makeinfo 4.0 or texi2html; }; }
+    fi
+    enable_html=no
+  fi
+fi
+
+
+
+if test "x$enable_html" = xmakeinfo; then
+  MAKEINFO_HTML_TRUE=
+  MAKEINFO_HTML_FALSE='#'
+else
+  MAKEINFO_HTML_TRUE='#'
+  MAKEINFO_HTML_FALSE=
+fi
+
+
+
+if test "x$enable_html" = xtexi2html; then
+  TEXI2HTML_HTML_TRUE=
+  TEXI2HTML_HTML_FALSE='#'
+else
+  TEXI2HTML_HTML_TRUE='#'
+  TEXI2HTML_HTML_FALSE=
+fi
+
+
+
+
+
+MKINSTALLDIRS="$mkdir_p"
+
+
+
+        # Extract the first word of "msgfmt", so it can be a program name with args.
+set dummy msgfmt; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_path_MSGFMT+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  case "$MSGFMT" in
+  /*)
+  ac_cv_path_MSGFMT="$MSGFMT" # Let the user override the test with a path.
+  ;;
+  *)
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+  for ac_dir in $PATH; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      if $ac_dir/$ac_word --statistics /dev/null >/dev/null 2>&1 &&
+     (if $ac_dir/$ac_word --statistics /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi); then
+	ac_cv_path_MSGFMT="$ac_dir/$ac_word"
+	break
+      fi
+    fi
+  done
+  IFS="$ac_save_ifs"
+  test -z "$ac_cv_path_MSGFMT" && ac_cv_path_MSGFMT=":"
+  ;;
+esac
+fi
+MSGFMT="$ac_cv_path_MSGFMT"
+if test "$MSGFMT" != ":"; then
+  echo "$as_me:$LINENO: result: $MSGFMT" >&5
+echo "${ECHO_T}$MSGFMT" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  # Extract the first word of "gmsgfmt", so it can be a program name with args.
+set dummy gmsgfmt; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_path_GMSGFMT+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  case $GMSGFMT in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_GMSGFMT="$GMSGFMT" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_GMSGFMT="$as_dir/$ac_word$ac_exec_ext"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+  test -z "$ac_cv_path_GMSGFMT" && ac_cv_path_GMSGFMT="$MSGFMT"
+  ;;
+esac
+fi
+GMSGFMT=$ac_cv_path_GMSGFMT
+
+if test -n "$GMSGFMT"; then
+  echo "$as_me:$LINENO: result: $GMSGFMT" >&5
+echo "${ECHO_T}$GMSGFMT" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+
+        # Extract the first word of "xgettext", so it can be a program name with args.
+set dummy xgettext; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_path_XGETTEXT+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  case "$XGETTEXT" in
+  /*)
+  ac_cv_path_XGETTEXT="$XGETTEXT" # Let the user override the test with a path.
+  ;;
+  *)
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+  for ac_dir in $PATH; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      if $ac_dir/$ac_word --omit-header --copyright-holder= /dev/null >/dev/null 2>&1 &&
+     (if $ac_dir/$ac_word --omit-header --copyright-holder= /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi); then
+	ac_cv_path_XGETTEXT="$ac_dir/$ac_word"
+	break
+      fi
+    fi
+  done
+  IFS="$ac_save_ifs"
+  test -z "$ac_cv_path_XGETTEXT" && ac_cv_path_XGETTEXT=":"
+  ;;
+esac
+fi
+XGETTEXT="$ac_cv_path_XGETTEXT"
+if test "$XGETTEXT" != ":"; then
+  echo "$as_me:$LINENO: result: $XGETTEXT" >&5
+echo "${ECHO_T}$XGETTEXT" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+    rm -f messages.po
+
+    # Extract the first word of "msgmerge", so it can be a program name with args.
+set dummy msgmerge; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_path_MSGMERGE+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  case "$MSGMERGE" in
+  /*)
+  ac_cv_path_MSGMERGE="$MSGMERGE" # Let the user override the test with a path.
+  ;;
+  *)
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+  for ac_dir in $PATH; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      if $ac_dir/$ac_word --update -q /dev/null /dev/null >/dev/null 2>&1; then
+	ac_cv_path_MSGMERGE="$ac_dir/$ac_word"
+	break
+      fi
+    fi
+  done
+  IFS="$ac_save_ifs"
+  test -z "$ac_cv_path_MSGMERGE" && ac_cv_path_MSGMERGE=":"
+  ;;
+esac
+fi
+MSGMERGE="$ac_cv_path_MSGMERGE"
+if test "$MSGMERGE" != ":"; then
+  echo "$as_me:$LINENO: result: $MSGMERGE" >&5
+echo "${ECHO_T}$MSGMERGE" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+
+      if test "$GMSGFMT" != ":"; then
+            if $GMSGFMT --statistics /dev/null >/dev/null 2>&1 &&
+       (if $GMSGFMT --statistics /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi); then
+      : ;
+    else
+      GMSGFMT=`echo "$GMSGFMT" | sed -e 's,^.*/,,'`
+      echo "$as_me:$LINENO: result: found $GMSGFMT program is not GNU msgfmt; ignore it" >&5
+echo "${ECHO_T}found $GMSGFMT program is not GNU msgfmt; ignore it" >&6
+      GMSGFMT=":"
+    fi
+  fi
+
+      if test "$XGETTEXT" != ":"; then
+            if $XGETTEXT --omit-header --copyright-holder= /dev/null >/dev/null 2>&1 &&
+       (if $XGETTEXT --omit-header --copyright-holder= /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi); then
+      : ;
+    else
+      echo "$as_me:$LINENO: result: found xgettext program is not GNU xgettext; ignore it" >&5
+echo "${ECHO_T}found xgettext program is not GNU xgettext; ignore it" >&6
+      XGETTEXT=":"
+    fi
+        rm -f messages.po
+  fi
+
+            ac_config_commands="$ac_config_commands default-1"
+
+
+# Make sure we can run config.sub.
+$ac_config_sub sun4 >/dev/null 2>&1 ||
+  { { echo "$as_me:$LINENO: error: cannot run $ac_config_sub" >&5
+echo "$as_me: error: cannot run $ac_config_sub" >&2;}
+   { (exit 1); exit 1; }; }
+
+echo "$as_me:$LINENO: checking build system type" >&5
+echo $ECHO_N "checking build system type... $ECHO_C" >&6
+if test "${ac_cv_build+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_build_alias=$build_alias
+test -z "$ac_cv_build_alias" &&
+  ac_cv_build_alias=`$ac_config_guess`
+test -z "$ac_cv_build_alias" &&
+  { { echo "$as_me:$LINENO: error: cannot guess build type; you must specify one" >&5
+echo "$as_me: error: cannot guess build type; you must specify one" >&2;}
+   { (exit 1); exit 1; }; }
+ac_cv_build=`$ac_config_sub $ac_cv_build_alias` ||
+  { { echo "$as_me:$LINENO: error: $ac_config_sub $ac_cv_build_alias failed" >&5
+echo "$as_me: error: $ac_config_sub $ac_cv_build_alias failed" >&2;}
+   { (exit 1); exit 1; }; }
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_build" >&5
+echo "${ECHO_T}$ac_cv_build" >&6
+build=$ac_cv_build
+build_cpu=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+build_vendor=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+build_os=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+
+echo "$as_me:$LINENO: checking host system type" >&5
+echo $ECHO_N "checking host system type... $ECHO_C" >&6
+if test "${ac_cv_host+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_host_alias=$host_alias
+test -z "$ac_cv_host_alias" &&
+  ac_cv_host_alias=$ac_cv_build_alias
+ac_cv_host=`$ac_config_sub $ac_cv_host_alias` ||
+  { { echo "$as_me:$LINENO: error: $ac_config_sub $ac_cv_host_alias failed" >&5
+echo "$as_me: error: $ac_config_sub $ac_cv_host_alias failed" >&2;}
+   { (exit 1); exit 1; }; }
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_host" >&5
+echo "${ECHO_T}$ac_cv_host" >&6
+host=$ac_cv_host
+host_cpu=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+host_vendor=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+host_os=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+
+echo "$as_me:$LINENO: checking for inline" >&5
+echo $ECHO_N "checking for inline... $ECHO_C" >&6
+if test "${ac_cv_c_inline+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_c_inline=no
+for ac_kw in inline __inline__ __inline; do
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifndef __cplusplus
+typedef int foo_t;
+static $ac_kw foo_t static_foo () {return 0; }
+$ac_kw foo_t foo () {return 0; }
+#endif
+
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_c_inline=$ac_kw; break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+done
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_inline" >&5
+echo "${ECHO_T}$ac_cv_c_inline" >&6
+
+
+case $ac_cv_c_inline in
+  inline | yes) ;;
+  *)
+    case $ac_cv_c_inline in
+      no) ac_val=;;
+      *) ac_val=$ac_cv_c_inline;;
+    esac
+    cat >>confdefs.h <<_ACEOF
+#ifndef __cplusplus
+#define inline $ac_val
+#endif
+_ACEOF
+    ;;
+esac
+
+echo "$as_me:$LINENO: checking for off_t" >&5
+echo $ECHO_N "checking for off_t... $ECHO_C" >&6
+if test "${ac_cv_type_off_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((off_t *) 0)
+  return 0;
+if (sizeof (off_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_off_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_off_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_off_t" >&5
+echo "${ECHO_T}$ac_cv_type_off_t" >&6
+if test $ac_cv_type_off_t = yes; then
+  :
+else
+
+cat >>confdefs.h <<_ACEOF
+#define off_t long
+_ACEOF
+
+fi
+
+
+
+for ac_header in stdlib.h unistd.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to bonzini@gnu.org ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_func in getpagesize
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+echo "$as_me:$LINENO: checking for working mmap" >&5
+echo $ECHO_N "checking for working mmap... $ECHO_C" >&6
+if test "${ac_cv_func_mmap_fixed_mapped+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test "$cross_compiling" = yes; then
+  ac_cv_func_mmap_fixed_mapped=no
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+/* malloc might have been renamed as rpl_malloc. */
+#undef malloc
+
+/* Thanks to Mike Haertel and Jim Avera for this test.
+   Here is a matrix of mmap possibilities:
+	mmap private not fixed
+	mmap private fixed at somewhere currently unmapped
+	mmap private fixed at somewhere already mapped
+	mmap shared not fixed
+	mmap shared fixed at somewhere currently unmapped
+	mmap shared fixed at somewhere already mapped
+   For private mappings, we should verify that changes cannot be read()
+   back from the file, nor mmap's back from the file at a different
+   address.  (There have been systems where private was not correctly
+   implemented like the infamous i386 svr4.0, and systems where the
+   VM page cache was not coherent with the file system buffer cache
+   like early versions of FreeBSD and possibly contemporary NetBSD.)
+   For shared mappings, we should conversely verify that changes get
+   propagated back to all the places they're supposed to be.
+
+   Grep wants private fixed already mapped.
+   The main things grep needs to know about mmap are:
+   * does it exist and is it safe to write into the mmap'd area
+   * how to use it (BSD variants)  */
+
+#include <fcntl.h>
+#include <sys/mman.h>
+
+#if !STDC_HEADERS && !HAVE_STDLIB_H
+char *malloc ();
+#endif
+
+/* This mess was copied from the GNU getpagesize.h.  */
+#if !HAVE_GETPAGESIZE
+/* Assume that all systems that can run configure have sys/param.h.  */
+# if !HAVE_SYS_PARAM_H
+#  define HAVE_SYS_PARAM_H 1
+# endif
+
+# ifdef _SC_PAGESIZE
+#  define getpagesize() sysconf(_SC_PAGESIZE)
+# else /* no _SC_PAGESIZE */
+#  if HAVE_SYS_PARAM_H
+#   include <sys/param.h>
+#   ifdef EXEC_PAGESIZE
+#    define getpagesize() EXEC_PAGESIZE
+#   else /* no EXEC_PAGESIZE */
+#    ifdef NBPG
+#     define getpagesize() NBPG * CLSIZE
+#     ifndef CLSIZE
+#      define CLSIZE 1
+#     endif /* no CLSIZE */
+#    else /* no NBPG */
+#     ifdef NBPC
+#      define getpagesize() NBPC
+#     else /* no NBPC */
+#      ifdef PAGESIZE
+#       define getpagesize() PAGESIZE
+#      endif /* PAGESIZE */
+#     endif /* no NBPC */
+#    endif /* no NBPG */
+#   endif /* no EXEC_PAGESIZE */
+#  else /* no HAVE_SYS_PARAM_H */
+#   define getpagesize() 8192	/* punt totally */
+#  endif /* no HAVE_SYS_PARAM_H */
+# endif /* no _SC_PAGESIZE */
+
+#endif /* no HAVE_GETPAGESIZE */
+
+int
+main ()
+{
+  char *data, *data2, *data3;
+  int i, pagesize;
+  int fd;
+
+  pagesize = getpagesize ();
+
+  /* First, make a file with some known garbage in it. */
+  data = (char *) malloc (pagesize);
+  if (!data)
+    exit (1);
+  for (i = 0; i < pagesize; ++i)
+    *(data + i) = rand ();
+  umask (0);
+  fd = creat ("conftest.mmap", 0600);
+  if (fd < 0)
+    exit (1);
+  if (write (fd, data, pagesize) != pagesize)
+    exit (1);
+  close (fd);
+
+  /* Next, try to mmap the file at a fixed address which already has
+     something else allocated at it.  If we can, also make sure that
+     we see the same garbage.  */
+  fd = open ("conftest.mmap", O_RDWR);
+  if (fd < 0)
+    exit (1);
+  data2 = (char *) malloc (2 * pagesize);
+  if (!data2)
+    exit (1);
+  data2 += (pagesize - ((long) data2 & (pagesize - 1))) & (pagesize - 1);
+  if (data2 != mmap (data2, pagesize, PROT_READ | PROT_WRITE,
+		     MAP_PRIVATE | MAP_FIXED, fd, 0L))
+    exit (1);
+  for (i = 0; i < pagesize; ++i)
+    if (*(data + i) != *(data2 + i))
+      exit (1);
+
+  /* Finally, make sure that changes to the mapped area do not
+     percolate back to the file as seen by read().  (This is a bug on
+     some variants of i386 svr4.0.)  */
+  for (i = 0; i < pagesize; ++i)
+    *(data2 + i) = *(data2 + i) + 1;
+  data3 = (char *) malloc (pagesize);
+  if (!data3)
+    exit (1);
+  if (read (fd, data3, pagesize) != pagesize)
+    exit (1);
+  for (i = 0; i < pagesize; ++i)
+    if (*(data + i) != *(data3 + i))
+      exit (1);
+  close (fd);
+  exit (0);
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_mmap_fixed_mapped=yes
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_cv_func_mmap_fixed_mapped=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_mmap_fixed_mapped" >&5
+echo "${ECHO_T}$ac_cv_func_mmap_fixed_mapped" >&6
+if test $ac_cv_func_mmap_fixed_mapped = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_MMAP 1
+_ACEOF
+
+fi
+rm -f conftest.mmap
+
+
+    echo "$as_me:$LINENO: checking whether we are using the GNU C Library 2.1 or newer" >&5
+echo $ECHO_N "checking whether we are using the GNU C Library 2.1 or newer... $ECHO_C" >&6
+if test "${ac_cv_gnu_library_2_1+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
+  Lucky GNU user
+ #endif
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Lucky GNU user" >/dev/null 2>&1; then
+  ac_cv_gnu_library_2_1=yes
+else
+  ac_cv_gnu_library_2_1=no
+fi
+rm -f conftest*
+
+
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_gnu_library_2_1" >&5
+echo "${ECHO_T}$ac_cv_gnu_library_2_1" >&6
+
+    GLIBC21="$ac_cv_gnu_library_2_1"
+
+
+
+      if test "X$prefix" = "XNONE"; then
+    acl_final_prefix="$ac_default_prefix"
+  else
+    acl_final_prefix="$prefix"
+  fi
+  if test "X$exec_prefix" = "XNONE"; then
+    acl_final_exec_prefix='${prefix}'
+  else
+    acl_final_exec_prefix="$exec_prefix"
+  fi
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
+  prefix="$acl_save_prefix"
+
+
+# Check whether --with-gnu-ld or --without-gnu-ld was given.
+if test "${with_gnu_ld+set}" = set; then
+  withval="$with_gnu_ld"
+  test "$withval" = no || with_gnu_ld=yes
+else
+  with_gnu_ld=no
+fi;
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  echo "$as_me:$LINENO: checking for ld used by GCC" >&5
+echo $ECHO_N "checking for ld used by GCC... $ECHO_C" >&6
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [\\/]* | [A-Za-z]:[\\/]*)
+      re_direlt='/[^/][^/]*/\.\./'
+      # Canonicalize the path of ld
+      ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
+      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
+	ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  echo "$as_me:$LINENO: checking for GNU ld" >&5
+echo $ECHO_N "checking for GNU ld... $ECHO_C" >&6
+else
+  echo "$as_me:$LINENO: checking for non-GNU ld" >&5
+echo $ECHO_N "checking for non-GNU ld... $ECHO_C" >&6
+fi
+if test "${acl_cv_path_LD+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -z "$LD"; then
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
+  for ac_dir in $PATH; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      acl_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some GNU ld's only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      if "$acl_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then
+	test "$with_gnu_ld" != no && break
+      else
+	test "$with_gnu_ld" != yes && break
+      fi
+    fi
+  done
+  IFS="$ac_save_ifs"
+else
+  acl_cv_path_LD="$LD" # Let the user override the test with a path.
+fi
+fi
+
+LD="$acl_cv_path_LD"
+if test -n "$LD"; then
+  echo "$as_me:$LINENO: result: $LD" >&5
+echo "${ECHO_T}$LD" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+test -z "$LD" && { { echo "$as_me:$LINENO: error: no acceptable ld found in \$PATH" >&5
+echo "$as_me: error: no acceptable ld found in \$PATH" >&2;}
+   { (exit 1); exit 1; }; }
+echo "$as_me:$LINENO: checking if the linker ($LD) is GNU ld" >&5
+echo $ECHO_N "checking if the linker ($LD) is GNU ld... $ECHO_C" >&6
+if test "${acl_cv_prog_gnu_ld+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  # I'd rather use --version here, but apparently some GNU ld's only accept -v.
+if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
+  acl_cv_prog_gnu_ld=yes
+else
+  acl_cv_prog_gnu_ld=no
+fi
+fi
+echo "$as_me:$LINENO: result: $acl_cv_prog_gnu_ld" >&5
+echo "${ECHO_T}$acl_cv_prog_gnu_ld" >&6
+with_gnu_ld=$acl_cv_prog_gnu_ld
+
+
+
+                                                echo "$as_me:$LINENO: checking for shared library run path origin" >&5
+echo $ECHO_N "checking for shared library run path origin... $ECHO_C" >&6
+if test "${acl_cv_rpath+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
+    ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
+    . ./conftest.sh
+    rm -f ./conftest.sh
+    acl_cv_rpath=done
+
+fi
+echo "$as_me:$LINENO: result: $acl_cv_rpath" >&5
+echo "${ECHO_T}$acl_cv_rpath" >&6
+  wl="$acl_cv_wl"
+  libext="$acl_cv_libext"
+  shlibext="$acl_cv_shlibext"
+  hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
+  hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
+  hardcode_direct="$acl_cv_hardcode_direct"
+  hardcode_minus_L="$acl_cv_hardcode_minus_L"
+  sys_lib_search_path_spec="$acl_cv_sys_lib_search_path_spec"
+  sys_lib_dlsearch_path_spec="$acl_cv_sys_lib_dlsearch_path_spec"
+
+
+
+
+
+
+
+
+    use_additional=yes
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+
+# Check whether --with-libiconv-prefix or --without-libiconv-prefix was given.
+if test "${with_libiconv_prefix+set}" = set; then
+  withval="$with_libiconv_prefix"
+
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/lib"
+      fi
+    fi
+
+fi;
+      LIBICONV=
+  LTLIBICONV=
+  INCICONV=
+  rpathdirs=
+  ltrpathdirs=
+  names_already_handled=
+  names_next_round='iconv '
+  while test -n "$names_next_round"; do
+    names_this_round="$names_next_round"
+    names_next_round=
+    for name in $names_this_round; do
+      already_handled=
+      for n in $names_already_handled; do
+        if test "$n" = "$name"; then
+          already_handled=yes
+          break
+        fi
+      done
+      if test -z "$already_handled"; then
+        names_already_handled="$names_already_handled $name"
+                        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'`
+        eval value=\"\$HAVE_LIB$uppername\"
+        if test -n "$value"; then
+          if test "$value" = yes; then
+            eval value=\"\$LIB$uppername\"
+            test -z "$value" || LIBICONV="${LIBICONV}${LIBICONV:+ }$value"
+            eval value=\"\$LTLIB$uppername\"
+            test -z "$value" || LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }$value"
+          else
+                                    :
+          fi
+        else
+                              found_dir=
+          found_la=
+          found_so=
+          found_a=
+          if test $use_additional = yes; then
+            if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext"; then
+              found_dir="$additional_libdir"
+              found_so="$additional_libdir/lib$name.$shlibext"
+              if test -f "$additional_libdir/lib$name.la"; then
+                found_la="$additional_libdir/lib$name.la"
+              fi
+            else
+              if test -f "$additional_libdir/lib$name.$libext"; then
+                found_dir="$additional_libdir"
+                found_a="$additional_libdir/lib$name.$libext"
+                if test -f "$additional_libdir/lib$name.la"; then
+                  found_la="$additional_libdir/lib$name.la"
+                fi
+              fi
+            fi
+          fi
+          if test "X$found_dir" = "X"; then
+            for x in $LDFLAGS $LTLIBICONV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+              case "$x" in
+                -L*)
+                  dir=`echo "X$x" | sed -e 's/^X-L//'`
+                  if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext"; then
+                    found_dir="$dir"
+                    found_so="$dir/lib$name.$shlibext"
+                    if test -f "$dir/lib$name.la"; then
+                      found_la="$dir/lib$name.la"
+                    fi
+                  else
+                    if test -f "$dir/lib$name.$libext"; then
+                      found_dir="$dir"
+                      found_a="$dir/lib$name.$libext"
+                      if test -f "$dir/lib$name.la"; then
+                        found_la="$dir/lib$name.la"
+                      fi
+                    fi
+                  fi
+                  ;;
+              esac
+              if test "X$found_dir" != "X"; then
+                break
+              fi
+            done
+          fi
+          if test "X$found_dir" != "X"; then
+                        LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-L$found_dir -l$name"
+            if test "X$found_so" != "X"; then
+                                                        if test "X$found_dir" = "X/usr/lib"; then
+                                LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
+              else
+                                                                                haveit=
+                for x in $ltrpathdirs; do
+                  if test "X$x" = "X$found_dir"; then
+                    haveit=yes
+                    break
+                  fi
+                done
+                if test -z "$haveit"; then
+                  ltrpathdirs="$ltrpathdirs $found_dir"
+                fi
+                                if test "$hardcode_direct" = yes; then
+                                                      LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
+                else
+                  if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
+                                                            LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
+                                                            haveit=
+                    for x in $rpathdirs; do
+                      if test "X$x" = "X$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      rpathdirs="$rpathdirs $found_dir"
+                    fi
+                  else
+                                                                                haveit=
+                    for x in $LDFLAGS $LIBICONV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                      if test "X$x" = "X-L$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      LIBICONV="${LIBICONV}${LIBICONV:+ }-L$found_dir"
+                    fi
+                    if test "$hardcode_minus_L" != no; then
+                                                                                        LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
+                    else
+                                                                                                                                                                                LIBICONV="${LIBICONV}${LIBICONV:+ }-l$name"
+                    fi
+                  fi
+                fi
+              fi
+            else
+              if test "X$found_a" != "X"; then
+                                LIBICONV="${LIBICONV}${LIBICONV:+ }$found_a"
+              else
+                                                LIBICONV="${LIBICONV}${LIBICONV:+ }-L$found_dir -l$name"
+              fi
+            fi
+                        additional_includedir=
+            case "$found_dir" in
+              */lib | */lib/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'`
+                additional_includedir="$basedir/include"
+                ;;
+            esac
+            if test "X$additional_includedir" != "X"; then
+                                                                                                                if test "X$additional_includedir" != "X/usr/include"; then
+                haveit=
+                if test "X$additional_includedir" = "X/usr/local/include"; then
+                  if test -n "$GCC"; then
+                    case $host_os in
+                      linux*) haveit=yes;;
+                    esac
+                  fi
+                fi
+                if test -z "$haveit"; then
+                  for x in $CPPFLAGS $INCICONV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                    if test "X$x" = "X-I$additional_includedir"; then
+                      haveit=yes
+                      break
+                    fi
+                  done
+                  if test -z "$haveit"; then
+                    if test -d "$additional_includedir"; then
+                                            INCICONV="${INCICONV}${INCICONV:+ }-I$additional_includedir"
+                    fi
+                  fi
+                fi
+              fi
+            fi
+                        if test -n "$found_la"; then
+                                                        save_libdir="$libdir"
+              case "$found_la" in
+                */* | *\\*) . "$found_la" ;;
+                *) . "./$found_la" ;;
+              esac
+              libdir="$save_libdir"
+                            for dep in $dependency_libs; do
+                case "$dep" in
+                  -L*)
+                    additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+                                                                                                                                                                if test "X$additional_libdir" != "X/usr/lib"; then
+                      haveit=
+                      if test "X$additional_libdir" = "X/usr/local/lib"; then
+                        if test -n "$GCC"; then
+                          case $host_os in
+                            linux*) haveit=yes;;
+                          esac
+                        fi
+                      fi
+                      if test -z "$haveit"; then
+                        haveit=
+                        for x in $LDFLAGS $LIBICONV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                                                        LIBICONV="${LIBICONV}${LIBICONV:+ }-L$additional_libdir"
+                          fi
+                        fi
+                        haveit=
+                        for x in $LDFLAGS $LTLIBICONV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                                                        LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-L$additional_libdir"
+                          fi
+                        fi
+                      fi
+                    fi
+                    ;;
+                  -l*)
+                                        names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
+                    ;;
+                  *.la)
+                                                                                names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+                    ;;
+                  *)
+                                        LIBICONV="${LIBICONV}${LIBICONV:+ }$dep"
+                    LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }$dep"
+                    ;;
+                esac
+              done
+            fi
+          else
+                                                            LIBICONV="${LIBICONV}${LIBICONV:+ }-l$name"
+            LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-l$name"
+          fi
+        fi
+      fi
+    done
+  done
+  if test "X$rpathdirs" != "X"; then
+    if test -n "$hardcode_libdir_separator"; then
+                        alldirs=
+      for found_dir in $rpathdirs; do
+        alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir"
+      done
+            acl_save_libdir="$libdir"
+      libdir="$alldirs"
+      eval flag=\"$hardcode_libdir_flag_spec\"
+      libdir="$acl_save_libdir"
+      LIBICONV="${LIBICONV}${LIBICONV:+ }$flag"
+    else
+            for found_dir in $rpathdirs; do
+        acl_save_libdir="$libdir"
+        libdir="$found_dir"
+        eval flag=\"$hardcode_libdir_flag_spec\"
+        libdir="$acl_save_libdir"
+        LIBICONV="${LIBICONV}${LIBICONV:+ }$flag"
+      done
+    fi
+  fi
+  if test "X$ltrpathdirs" != "X"; then
+            for found_dir in $ltrpathdirs; do
+      LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-R$found_dir"
+    done
+  fi
+
+
+          am_save_CPPFLAGS="$CPPFLAGS"
+
+  for element in $INCICONV; do
+    haveit=
+    for x in $CPPFLAGS; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
+    fi
+  done
+
+
+  echo "$as_me:$LINENO: checking for iconv" >&5
+echo $ECHO_N "checking for iconv... $ECHO_C" >&6
+if test "${am_cv_func_iconv+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    am_cv_func_iconv="no, consider installing GNU libiconv"
+    am_cv_lib_iconv=no
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <iconv.h>
+int
+main ()
+{
+iconv_t cd = iconv_open("","");
+       iconv(cd,NULL,NULL,NULL,NULL);
+       iconv_close(cd);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  am_cv_func_iconv=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+    if test "$am_cv_func_iconv" != yes; then
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS $LIBICONV"
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <iconv.h>
+int
+main ()
+{
+iconv_t cd = iconv_open("","");
+         iconv(cd,NULL,NULL,NULL,NULL);
+         iconv_close(cd);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  am_cv_lib_iconv=yes
+        am_cv_func_iconv=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+      LIBS="$am_save_LIBS"
+    fi
+
+fi
+echo "$as_me:$LINENO: result: $am_cv_func_iconv" >&5
+echo "${ECHO_T}$am_cv_func_iconv" >&6
+  if test "$am_cv_func_iconv" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_ICONV 1
+_ACEOF
+
+  fi
+  if test "$am_cv_lib_iconv" = yes; then
+    echo "$as_me:$LINENO: checking how to link with libiconv" >&5
+echo $ECHO_N "checking how to link with libiconv... $ECHO_C" >&6
+    echo "$as_me:$LINENO: result: $LIBICONV" >&5
+echo "${ECHO_T}$LIBICONV" >&6
+  else
+            CPPFLAGS="$am_save_CPPFLAGS"
+    LIBICONV=
+    LTLIBICONV=
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_header in argz.h limits.h locale.h nl_types.h malloc.h stddef.h \
+stdlib.h string.h unistd.h sys/param.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to bonzini@gnu.org ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_func in feof_unlocked fgets_unlocked getc_unlocked getcwd getegid \
+geteuid getgid getuid mempcpy munmap putenv setenv setlocale stpcpy \
+strcasecmp strdup strtoul tsearch __argz_count __argz_stringify __argz_next
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+
+
+  if test "$am_cv_func_iconv" = yes; then
+    echo "$as_me:$LINENO: checking for iconv declaration" >&5
+echo $ECHO_N "checking for iconv declaration... $ECHO_C" >&6
+    if test "${am_cv_proto_iconv+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#include <stdlib.h>
+#include <iconv.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+#if defined(__STDC__) || defined(__cplusplus)
+size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
+#else
+size_t iconv();
+#endif
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  am_cv_proto_iconv_arg1=""
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+am_cv_proto_iconv_arg1="const"
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"
+fi
+
+    am_cv_proto_iconv=`echo "$am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
+    echo "$as_me:$LINENO: result: ${ac_t:-
+         }$am_cv_proto_iconv" >&5
+echo "${ECHO_T}${ac_t:-
+         }$am_cv_proto_iconv" >&6
+
+cat >>confdefs.h <<_ACEOF
+#define ICONV_CONST $am_cv_proto_iconv_arg1
+_ACEOF
+
+  fi
+
+
+  echo "$as_me:$LINENO: checking for nl_langinfo and CODESET" >&5
+echo $ECHO_N "checking for nl_langinfo and CODESET... $ECHO_C" >&6
+if test "${am_cv_langinfo_codeset+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <langinfo.h>
+int
+main ()
+{
+char* cs = nl_langinfo(CODESET);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  am_cv_langinfo_codeset=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+am_cv_langinfo_codeset=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
+fi
+echo "$as_me:$LINENO: result: $am_cv_langinfo_codeset" >&5
+echo "${ECHO_T}$am_cv_langinfo_codeset" >&6
+  if test $am_cv_langinfo_codeset = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_LANGINFO_CODESET 1
+_ACEOF
+
+  fi
+
+  if test $ac_cv_header_locale_h = yes; then
+    echo "$as_me:$LINENO: checking for LC_MESSAGES" >&5
+echo $ECHO_N "checking for LC_MESSAGES... $ECHO_C" >&6
+if test "${am_cv_val_LC_MESSAGES+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <locale.h>
+int
+main ()
+{
+return LC_MESSAGES
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  am_cv_val_LC_MESSAGES=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+am_cv_val_LC_MESSAGES=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $am_cv_val_LC_MESSAGES" >&5
+echo "${ECHO_T}$am_cv_val_LC_MESSAGES" >&6
+    if test $am_cv_val_LC_MESSAGES = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_LC_MESSAGES 1
+_ACEOF
+
+    fi
+  fi
+
+                      for ac_prog in bison
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_INTLBISON+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$INTLBISON"; then
+  ac_cv_prog_INTLBISON="$INTLBISON" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_INTLBISON="$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+INTLBISON=$ac_cv_prog_INTLBISON
+if test -n "$INTLBISON"; then
+  echo "$as_me:$LINENO: result: $INTLBISON" >&5
+echo "${ECHO_T}$INTLBISON" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  test -n "$INTLBISON" && break
+done
+
+  if test -z "$INTLBISON"; then
+    ac_verc_fail=yes
+  else
+        echo "$as_me:$LINENO: checking version of bison" >&5
+echo $ECHO_N "checking version of bison... $ECHO_C" >&6
+    ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
+    case $ac_prog_version in
+      '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+      1.2[6-9]* | 1.[3-9][0-9]* | [2-9].*)
+         ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+      *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+    esac
+    echo "$as_me:$LINENO: result: $ac_prog_version" >&5
+echo "${ECHO_T}$ac_prog_version" >&6
+  fi
+  if test $ac_verc_fail = yes; then
+    INTLBISON=:
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking whether NLS is requested" >&5
+echo $ECHO_N "checking whether NLS is requested... $ECHO_C" >&6
+    # Check whether --enable-nls or --disable-nls was given.
+if test "${enable_nls+set}" = set; then
+  enableval="$enable_nls"
+  USE_NLS=$enableval
+else
+  USE_NLS=yes
+fi;
+  echo "$as_me:$LINENO: result: $USE_NLS" >&5
+echo "${ECHO_T}$USE_NLS" >&6
+
+
+
+    BUILD_INCLUDED_LIBINTL=no
+    USE_INCLUDED_LIBINTL=no
+
+  LIBINTL=
+  LTLIBINTL=
+  POSUB=
+
+    if test "$USE_NLS" = "yes"; then
+    gt_use_preinstalled_gnugettext=no
+
+      echo "$as_me:$LINENO: checking whether included gettext is requested" >&5
+echo $ECHO_N "checking whether included gettext is requested... $ECHO_C" >&6
+
+# Check whether --with-included-gettext or --without-included-gettext was given.
+if test "${with_included_gettext+set}" = set; then
+  withval="$with_included_gettext"
+  nls_cv_force_use_gnu_gettext=$withval
+else
+  nls_cv_force_use_gnu_gettext=no
+fi;
+      echo "$as_me:$LINENO: result: $nls_cv_force_use_gnu_gettext" >&5
+echo "${ECHO_T}$nls_cv_force_use_gnu_gettext" >&6
+
+      nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
+      if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
+
+
+
+
+
+
+        echo "$as_me:$LINENO: checking for GNU gettext in libc" >&5
+echo $ECHO_N "checking for GNU gettext in libc... $ECHO_C" >&6
+if test "${gt_cv_func_gnugettext2_libc+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <libintl.h>
+extern int _nl_msg_cat_cntr;
+int
+main ()
+{
+bindtextdomain ("", "");
+return (int) gettext ("") + (int) ngettext ("", "", 0) + _nl_msg_cat_cntr
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  gt_cv_func_gnugettext2_libc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+gt_cv_func_gnugettext2_libc=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $gt_cv_func_gnugettext2_libc" >&5
+echo "${ECHO_T}$gt_cv_func_gnugettext2_libc" >&6
+
+        if test "$gt_cv_func_gnugettext2_libc" != "yes"; then
+
+
+
+    use_additional=yes
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+
+# Check whether --with-libintl-prefix or --without-libintl-prefix was given.
+if test "${with_libintl_prefix+set}" = set; then
+  withval="$with_libintl_prefix"
+
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/lib"
+      fi
+    fi
+
+fi;
+      LIBINTL=
+  LTLIBINTL=
+  INCINTL=
+  rpathdirs=
+  ltrpathdirs=
+  names_already_handled=
+  names_next_round='intl '
+  while test -n "$names_next_round"; do
+    names_this_round="$names_next_round"
+    names_next_round=
+    for name in $names_this_round; do
+      already_handled=
+      for n in $names_already_handled; do
+        if test "$n" = "$name"; then
+          already_handled=yes
+          break
+        fi
+      done
+      if test -z "$already_handled"; then
+        names_already_handled="$names_already_handled $name"
+                        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'`
+        eval value=\"\$HAVE_LIB$uppername\"
+        if test -n "$value"; then
+          if test "$value" = yes; then
+            eval value=\"\$LIB$uppername\"
+            test -z "$value" || LIBINTL="${LIBINTL}${LIBINTL:+ }$value"
+            eval value=\"\$LTLIB$uppername\"
+            test -z "$value" || LTLIBINTL="${LTLIBINTL}${LTLIBINTL:+ }$value"
+          else
+                                    :
+          fi
+        else
+                              found_dir=
+          found_la=
+          found_so=
+          found_a=
+          if test $use_additional = yes; then
+            if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext"; then
+              found_dir="$additional_libdir"
+              found_so="$additional_libdir/lib$name.$shlibext"
+              if test -f "$additional_libdir/lib$name.la"; then
+                found_la="$additional_libdir/lib$name.la"
+              fi
+            else
+              if test -f "$additional_libdir/lib$name.$libext"; then
+                found_dir="$additional_libdir"
+                found_a="$additional_libdir/lib$name.$libext"
+                if test -f "$additional_libdir/lib$name.la"; then
+                  found_la="$additional_libdir/lib$name.la"
+                fi
+              fi
+            fi
+          fi
+          if test "X$found_dir" = "X"; then
+            for x in $LDFLAGS $LTLIBINTL; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+              case "$x" in
+                -L*)
+                  dir=`echo "X$x" | sed -e 's/^X-L//'`
+                  if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext"; then
+                    found_dir="$dir"
+                    found_so="$dir/lib$name.$shlibext"
+                    if test -f "$dir/lib$name.la"; then
+                      found_la="$dir/lib$name.la"
+                    fi
+                  else
+                    if test -f "$dir/lib$name.$libext"; then
+                      found_dir="$dir"
+                      found_a="$dir/lib$name.$libext"
+                      if test -f "$dir/lib$name.la"; then
+                        found_la="$dir/lib$name.la"
+                      fi
+                    fi
+                  fi
+                  ;;
+              esac
+              if test "X$found_dir" != "X"; then
+                break
+              fi
+            done
+          fi
+          if test "X$found_dir" != "X"; then
+                        LTLIBINTL="${LTLIBINTL}${LTLIBINTL:+ }-L$found_dir -l$name"
+            if test "X$found_so" != "X"; then
+                                                        if test "X$found_dir" = "X/usr/lib"; then
+                                LIBINTL="${LIBINTL}${LIBINTL:+ }$found_so"
+              else
+                                                                                haveit=
+                for x in $ltrpathdirs; do
+                  if test "X$x" = "X$found_dir"; then
+                    haveit=yes
+                    break
+                  fi
+                done
+                if test -z "$haveit"; then
+                  ltrpathdirs="$ltrpathdirs $found_dir"
+                fi
+                                if test "$hardcode_direct" = yes; then
+                                                      LIBINTL="${LIBINTL}${LIBINTL:+ }$found_so"
+                else
+                  if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
+                                                            LIBINTL="${LIBINTL}${LIBINTL:+ }$found_so"
+                                                            haveit=
+                    for x in $rpathdirs; do
+                      if test "X$x" = "X$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      rpathdirs="$rpathdirs $found_dir"
+                    fi
+                  else
+                                                                                haveit=
+                    for x in $LDFLAGS $LIBINTL; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                      if test "X$x" = "X-L$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      LIBINTL="${LIBINTL}${LIBINTL:+ }-L$found_dir"
+                    fi
+                    if test "$hardcode_minus_L" != no; then
+                                                                                        LIBINTL="${LIBINTL}${LIBINTL:+ }$found_so"
+                    else
+                                                                                                                                                                                LIBINTL="${LIBINTL}${LIBINTL:+ }-l$name"
+                    fi
+                  fi
+                fi
+              fi
+            else
+              if test "X$found_a" != "X"; then
+                                LIBINTL="${LIBINTL}${LIBINTL:+ }$found_a"
+              else
+                                                LIBINTL="${LIBINTL}${LIBINTL:+ }-L$found_dir -l$name"
+              fi
+            fi
+                        additional_includedir=
+            case "$found_dir" in
+              */lib | */lib/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'`
+                additional_includedir="$basedir/include"
+                ;;
+            esac
+            if test "X$additional_includedir" != "X"; then
+                                                                                                                if test "X$additional_includedir" != "X/usr/include"; then
+                haveit=
+                if test "X$additional_includedir" = "X/usr/local/include"; then
+                  if test -n "$GCC"; then
+                    case $host_os in
+                      linux*) haveit=yes;;
+                    esac
+                  fi
+                fi
+                if test -z "$haveit"; then
+                  for x in $CPPFLAGS $INCINTL; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                    if test "X$x" = "X-I$additional_includedir"; then
+                      haveit=yes
+                      break
+                    fi
+                  done
+                  if test -z "$haveit"; then
+                    if test -d "$additional_includedir"; then
+                                            INCINTL="${INCINTL}${INCINTL:+ }-I$additional_includedir"
+                    fi
+                  fi
+                fi
+              fi
+            fi
+                        if test -n "$found_la"; then
+                                                        save_libdir="$libdir"
+              case "$found_la" in
+                */* | *\\*) . "$found_la" ;;
+                *) . "./$found_la" ;;
+              esac
+              libdir="$save_libdir"
+                            for dep in $dependency_libs; do
+                case "$dep" in
+                  -L*)
+                    additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+                                                                                                                                                                if test "X$additional_libdir" != "X/usr/lib"; then
+                      haveit=
+                      if test "X$additional_libdir" = "X/usr/local/lib"; then
+                        if test -n "$GCC"; then
+                          case $host_os in
+                            linux*) haveit=yes;;
+                          esac
+                        fi
+                      fi
+                      if test -z "$haveit"; then
+                        haveit=
+                        for x in $LDFLAGS $LIBINTL; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                                                        LIBINTL="${LIBINTL}${LIBINTL:+ }-L$additional_libdir"
+                          fi
+                        fi
+                        haveit=
+                        for x in $LDFLAGS $LTLIBINTL; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                                                        LTLIBINTL="${LTLIBINTL}${LTLIBINTL:+ }-L$additional_libdir"
+                          fi
+                        fi
+                      fi
+                    fi
+                    ;;
+                  -l*)
+                                        names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
+                    ;;
+                  *.la)
+                                                                                names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+                    ;;
+                  *)
+                                        LIBINTL="${LIBINTL}${LIBINTL:+ }$dep"
+                    LTLIBINTL="${LTLIBINTL}${LTLIBINTL:+ }$dep"
+                    ;;
+                esac
+              done
+            fi
+          else
+                                                            LIBINTL="${LIBINTL}${LIBINTL:+ }-l$name"
+            LTLIBINTL="${LTLIBINTL}${LTLIBINTL:+ }-l$name"
+          fi
+        fi
+      fi
+    done
+  done
+  if test "X$rpathdirs" != "X"; then
+    if test -n "$hardcode_libdir_separator"; then
+                        alldirs=
+      for found_dir in $rpathdirs; do
+        alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir"
+      done
+            acl_save_libdir="$libdir"
+      libdir="$alldirs"
+      eval flag=\"$hardcode_libdir_flag_spec\"
+      libdir="$acl_save_libdir"
+      LIBINTL="${LIBINTL}${LIBINTL:+ }$flag"
+    else
+            for found_dir in $rpathdirs; do
+        acl_save_libdir="$libdir"
+        libdir="$found_dir"
+        eval flag=\"$hardcode_libdir_flag_spec\"
+        libdir="$acl_save_libdir"
+        LIBINTL="${LIBINTL}${LIBINTL:+ }$flag"
+      done
+    fi
+  fi
+  if test "X$ltrpathdirs" != "X"; then
+            for found_dir in $ltrpathdirs; do
+      LTLIBINTL="${LTLIBINTL}${LTLIBINTL:+ }-R$found_dir"
+    done
+  fi
+
+          echo "$as_me:$LINENO: checking for GNU gettext in libintl" >&5
+echo $ECHO_N "checking for GNU gettext in libintl... $ECHO_C" >&6
+if test "${gt_cv_func_gnugettext2_libintl+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  gt_save_CPPFLAGS="$CPPFLAGS"
+            CPPFLAGS="$CPPFLAGS $INCINTL"
+            gt_save_LIBS="$LIBS"
+            LIBS="$LIBS $LIBINTL"
+                        cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <libintl.h>
+extern int _nl_msg_cat_cntr;
+int
+main ()
+{
+bindtextdomain ("", "");
+return (int) gettext ("") + (int) ngettext ("", "", 0) + _nl_msg_cat_cntr
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  gt_cv_func_gnugettext2_libintl=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+gt_cv_func_gnugettext2_libintl=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+                        if test "$gt_cv_func_gnugettext2_libintl" != yes && test -n "$LIBICONV"; then
+              LIBS="$LIBS $LIBICONV"
+              cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <libintl.h>
+extern int _nl_msg_cat_cntr;
+int
+main ()
+{
+bindtextdomain ("", "");
+return (int) gettext ("") + (int) ngettext ("", "", 0) + _nl_msg_cat_cntr
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  LIBINTL="$LIBINTL $LIBICONV"
+                LTLIBINTL="$LTLIBINTL $LTLIBICONV"
+                gt_cv_func_gnugettext2_libintl=yes
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+            fi
+            CPPFLAGS="$gt_save_CPPFLAGS"
+            LIBS="$gt_save_LIBS"
+fi
+echo "$as_me:$LINENO: result: $gt_cv_func_gnugettext2_libintl" >&5
+echo "${ECHO_T}$gt_cv_func_gnugettext2_libintl" >&6
+        fi
+
+                                        if test "$gt_cv_func_gnugettext2_libc" = "yes" \
+           || { test "$gt_cv_func_gnugettext2_libintl" = "yes" \
+                && test "$PACKAGE" != gettext; }; then
+          gt_use_preinstalled_gnugettext=yes
+        fi
+
+
+        if test "$gt_use_preinstalled_gnugettext" != "yes"; then
+                              nls_cv_use_gnu_gettext=yes
+        fi
+      fi
+
+      if test "$nls_cv_use_gnu_gettext" = "yes"; then
+                INTLOBJS="\$(GETTOBJS)"
+        BUILD_INCLUDED_LIBINTL=yes
+        USE_INCLUDED_LIBINTL=yes
+        LIBINTL="../intl/libintl.a $LIBICONV"
+        LTLIBINTL="../intl/libintl.a $LTLIBICONV"
+        LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
+      fi
+
+      if test "$gt_use_preinstalled_gnugettext" = "yes" \
+         || test "$nls_cv_use_gnu_gettext" = "yes"; then
+                CATOBJEXT=.gmo
+      fi
+
+
+    if test "$gt_use_preinstalled_gnugettext" = "yes" \
+       || test "$nls_cv_use_gnu_gettext" = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define ENABLE_NLS 1
+_ACEOF
+
+    else
+      USE_NLS=no
+    fi
+  fi
+
+  if test "$USE_NLS" = "yes"; then
+
+    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
+      if test "$gt_cv_func_gnugettext2_libintl" = "yes"; then
+        echo "$as_me:$LINENO: checking how to link with libintl" >&5
+echo $ECHO_N "checking how to link with libintl... $ECHO_C" >&6
+        echo "$as_me:$LINENO: result: $LIBINTL" >&5
+echo "${ECHO_T}$LIBINTL" >&6
+
+  for element in $INCINTL; do
+    haveit=
+    for x in $CPPFLAGS; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
+    fi
+  done
+
+      fi
+
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETTEXT 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_DCGETTEXT 1
+_ACEOF
+
+    fi
+
+        POSUB=po
+  fi
+
+
+            if test "$PACKAGE" = gettext; then
+      BUILD_INCLUDED_LIBINTL=yes
+    fi
+
+
+
+
+
+
+        nls_cv_header_intl=
+    nls_cv_header_libgt=
+
+        DATADIRNAME=share
+
+
+        INSTOBJEXT=.mo
+
+
+        GENCAT=gencat
+
+
+        INTL_LIBTOOL_SUFFIX_PREFIX=
+
+
+
+    INTLLIBS="$LIBINTL"
+
+
+
+
+
+
+          ac_config_commands="$ac_config_commands gettext-fix"
+
+
+          ac_config_files="$ac_config_files bootstrap.sh"
+
+                                                                      ac_config_files="$ac_config_files Makefile doc/Makefile lib/Makefile sed/Makefile testsuite/Makefile po/Makefile.in intl/Makefile"
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, don't put newlines in cache variables' values.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+{
+  (set) 2>&1 |
+    case `(ac_space=' '; set | grep ac_space) 2>&1` in
+    *ac_space=\ *)
+      # `set' does not quote correctly, so add quotes (double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \).
+      sed -n \
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;;
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n \
+	"s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1=\\2/p"
+      ;;
+    esac;
+} |
+  sed '
+     t clear
+     : clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     t end
+     /^ac_cv_env/!s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     : end' >>confcache
+if diff $cache_file confcache >/dev/null 2>&1; then :; else
+  if test -w $cache_file; then
+    test "x$cache_file" != "x/dev/null" && echo "updating cache $cache_file"
+    cat confcache >$cache_file
+  else
+    echo "not updating unwritable cache $cache_file"
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+# VPATH may cause trouble with some makes, so we remove $(srcdir),
+# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=/{
+s/:*\$(srcdir):*/:/;
+s/:*\${srcdir}:*/:/;
+s/:*@srcdir@:*/:/;
+s/^\([^=]*=[	 ]*\):*/\1/;
+s/:*$//;
+s/^[^=]*=[	 ]*$//;
+}'
+fi
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_i=`echo "$ac_i" |
+	 sed 's/\$U\././;s/\.o$//;s/\.obj$//'`
+  # 2. Add them.
+  ac_libobjs="$ac_libobjs $ac_i\$U.$ac_objext"
+  ac_ltlibobjs="$ac_ltlibobjs $ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+if test -z "${AMDEP_TRUE}" && test -z "${AMDEP_FALSE}"; then
+  { { echo "$as_me:$LINENO: error: conditional \"AMDEP\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"AMDEP\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+if test -z "${am__fastdepCC_TRUE}" && test -z "${am__fastdepCC_FALSE}"; then
+  { { echo "$as_me:$LINENO: error: conditional \"am__fastdepCC\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"am__fastdepCC\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+if test -z "${TEST_REGEX_TRUE}" && test -z "${TEST_REGEX_FALSE}"; then
+  { { echo "$as_me:$LINENO: error: conditional \"TEST_REGEX\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"TEST_REGEX\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+if test -z "${BUILD_HTML_TRUE}" && test -z "${BUILD_HTML_FALSE}"; then
+  { { echo "$as_me:$LINENO: error: conditional \"BUILD_HTML\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"BUILD_HTML\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+if test -z "${MAKEINFO_HTML_TRUE}" && test -z "${MAKEINFO_HTML_FALSE}"; then
+  { { echo "$as_me:$LINENO: error: conditional \"MAKEINFO_HTML\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"MAKEINFO_HTML\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+if test -z "${TEXI2HTML_HTML_TRUE}" && test -z "${TEXI2HTML_HTML_FALSE}"; then
+  { { echo "$as_me:$LINENO: error: conditional \"TEXI2HTML_HTML\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"TEXI2HTML_HTML\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+: ${CONFIG_STATUS=./config.status}
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ echo "$as_me:$LINENO: creating $CONFIG_STATUS" >&5
+echo "$as_me: creating $CONFIG_STATUS" >&6;}
+cat >$CONFIG_STATUS <<_ACEOF
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+SHELL=\${CONFIG_SHELL-$SHELL}
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+## --------------------- ##
+## M4sh Initialization.  ##
+## --------------------- ##
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+  set -o posix
+fi
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# Support unset when possible.
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+
+# Work around bugs in pre-3.0 UWIN ksh.
+$as_unset ENV MAIL MAILPATH
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+for as_var in \
+  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+  LC_TELEPHONE LC_TIME
+do
+  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
+    eval $as_var=C; export $as_var
+  else
+    $as_unset $as_var
+  fi
+done
+
+# Required to use basename.
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename /) >/dev/null 2>&1 && test "X`basename / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+
+# Name of the executable.
+as_me=`$as_basename "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)$' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; }
+  	  /^X\/\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\/\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+
+
+# PATH needs CR, and LINENO needs CR and PATH.
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+
+
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2"  || {
+  # Find who we are.  Look in the path if we contain no path at all
+  # relative or not.
+  case $0 in
+    *[\\/]* ) as_myself=$0 ;;
+    *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+done
+
+       ;;
+  esac
+  # We did not find ourselves, most probably we were run as `sh COMMAND'
+  # in which case we are not to be found in the path.
+  if test "x$as_myself" = x; then
+    as_myself=$0
+  fi
+  if test ! -f "$as_myself"; then
+    { { echo "$as_me:$LINENO: error: cannot find myself; rerun with an absolute path" >&5
+echo "$as_me: error: cannot find myself; rerun with an absolute path" >&2;}
+   { (exit 1); exit 1; }; }
+  fi
+  case $CONFIG_SHELL in
+  '')
+    as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for as_base in sh bash ksh sh5; do
+	 case $as_dir in
+	 /*)
+	   if ("$as_dir/$as_base" -c '
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2" ') 2>/dev/null; then
+	     $as_unset BASH_ENV || test "${BASH_ENV+set}" != set || { BASH_ENV=; export BASH_ENV; }
+	     $as_unset ENV || test "${ENV+set}" != set || { ENV=; export ENV; }
+	     CONFIG_SHELL=$as_dir/$as_base
+	     export CONFIG_SHELL
+	     exec "$CONFIG_SHELL" "$0" ${1+"$@"}
+	   fi;;
+	 esac
+       done
+done
+;;
+  esac
+
+  # Create $as_me.lineno as a copy of $as_myself, but with $LINENO
+  # uniformly replaced by the line number.  The first 'sed' inserts a
+  # line-number line before each line; the second 'sed' does the real
+  # work.  The second script uses 'N' to pair each line-number line
+  # with the numbered line, and appends trailing '-' during
+  # substitution so that $LINENO is not a special case at line end.
+  # (Raja R Harinath suggested sed '=', and Paul Eggert wrote the
+  # second 'sed' script.  Blame Lee E. McMahon for sed's syntax.  :-)
+  sed '=' <$as_myself |
+    sed '
+      N
+      s,$,-,
+      : loop
+      s,^\(['$as_cr_digits']*\)\(.*\)[$]LINENO\([^'$as_cr_alnum'_]\),\1\2\1\3,
+      t loop
+      s,-$,,
+      s,^['$as_cr_digits']*\n,,
+    ' >$as_me.lineno &&
+  chmod +x $as_me.lineno ||
+    { { echo "$as_me:$LINENO: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&5
+echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2;}
+   { (exit 1); exit 1; }; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensible to this).
+  . ./$as_me.lineno
+  # Exit status is that of the last command.
+  exit
+}
+
+
+case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
+  *c*,-n*) ECHO_N= ECHO_C='
+' ECHO_T='	' ;;
+  *c*,*  ) ECHO_N=-n ECHO_C= ECHO_T= ;;
+  *)       ECHO_N= ECHO_C='\c' ECHO_T= ;;
+esac
+
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+rm -f conf$$ conf$$.exe conf$$.file
+echo >conf$$.file
+if ln -s conf$$.file conf$$ 2>/dev/null; then
+  # We could just check for DJGPP; but this test a) works b) is more generic
+  # and c) will remain valid once DJGPP supports symlinks (DJGPP 2.04).
+  if test -f conf$$.exe; then
+    # Don't use ln at all; we don't have any links
+    as_ln_s='cp -p'
+  else
+    as_ln_s='ln -s'
+  fi
+elif ln conf$$.file conf$$ 2>/dev/null; then
+  as_ln_s=ln
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.file
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p=:
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_executable_p="test -f"
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.
+as_nl='
+'
+IFS=" 	$as_nl"
+
+# CDPATH.
+$as_unset CDPATH
+
+exec 6>&1
+
+# Open the log real soon, to keep \$[0] and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.  Logging --version etc. is OK.
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+} >&5
+cat >&5 <<_CSEOF
+
+This file was extended by sed $as_me 4.1.5, which was
+generated by GNU Autoconf 2.59.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+_CSEOF
+echo "on `(hostname || uname -n) 2>/dev/null | sed 1q`" >&5
+echo >&5
+_ACEOF
+
+# Files that config.status was made for.
+if test -n "$ac_config_files"; then
+  echo "config_files=\"$ac_config_files\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_headers"; then
+  echo "config_headers=\"$ac_config_headers\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_links"; then
+  echo "config_links=\"$ac_config_links\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_commands"; then
+  echo "config_commands=\"$ac_config_commands\"" >>$CONFIG_STATUS
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+ac_cs_usage="\
+\`$as_me' instantiates files from templates according to the
+current configuration.
+
+Usage: $0 [OPTIONS] [FILE]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number, then exit
+  -q, --quiet      do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+  --file=FILE[:TEMPLATE]
+		   instantiate the configuration file FILE
+  --header=FILE[:TEMPLATE]
+		   instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Configuration links:
+$config_links
+
+Configuration commands:
+$config_commands
+
+Report bugs to <bug-autoconf@gnu.org>."
+_ACEOF
+
+cat >>$CONFIG_STATUS <<_ACEOF
+ac_cs_version="\\
+sed config.status 4.1.5
+configured by $0, generated by GNU Autoconf 2.59,
+  with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
+
+Copyright (C) 2003 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+srcdir=$srcdir
+INSTALL="$INSTALL"
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+# If no file are specified by the user, then we need to provide default
+# value.  By we need to know if files were specified by the user.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=*)
+    ac_option=`expr "x$1" : 'x\([^=]*\)='`
+    ac_optarg=`expr "x$1" : 'x[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  -*)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  *) # This is not an option, so the user has probably given explicit
+     # arguments.
+     ac_option=$1
+     ac_need_defaults=false;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --vers* | -V )
+    echo "$ac_cs_version"; exit 0 ;;
+  --he | --h)
+    # Conflict between --help and --header
+    { { echo "$as_me:$LINENO: error: ambiguous option: $1
+Try \`$0 --help' for more information." >&5
+echo "$as_me: error: ambiguous option: $1
+Try \`$0 --help' for more information." >&2;}
+   { (exit 1); exit 1; }; };;
+  --help | --hel | -h )
+    echo "$ac_cs_usage"; exit 0 ;;
+  --debug | --d* | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    CONFIG_FILES="$CONFIG_FILES $ac_optarg"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    CONFIG_HEADERS="$CONFIG_HEADERS $ac_optarg"
+    ac_need_defaults=false;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) { { echo "$as_me:$LINENO: error: unrecognized option: $1
+Try \`$0 --help' for more information." >&5
+echo "$as_me: error: unrecognized option: $1
+Try \`$0 --help' for more information." >&2;}
+   { (exit 1); exit 1; }; } ;;
+
+  *) ac_config_targets="$ac_config_targets $1" ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF
+if \$ac_cs_recheck; then
+  echo "running $SHELL $0 " $ac_configure_args \$ac_configure_extra_args " --no-create --no-recursion" >&6
+  exec $SHELL $0 $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+fi
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<_ACEOF
+#
+# INIT-COMMANDS section.
+#
+
+AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"
+# Capture the value of obsolete $ALL_LINGUAS because we need it to compute
+    # POFILES, GMOFILES, UPDATEPOFILES, DUMMYPOFILES, CATALOGS. But hide it
+    # from automake.
+    eval 'ALL_LINGUAS''="$ALL_LINGUAS"'
+    # Capture the value of LINGUAS because we need it to compute CATALOGS.
+    LINGUAS="${LINGUAS-%UNSET%}"
+
+
+  install_sh="$install_sh"
+
+_ACEOF
+
+
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+for ac_config_target in $ac_config_targets
+do
+  case "$ac_config_target" in
+  # Handling of arguments.
+  "lib/stdbool.h" ) CONFIG_FILES="$CONFIG_FILES lib/stdbool.h:lib/stdbool_.h" ;;
+  "bootstrap.sh" ) CONFIG_FILES="$CONFIG_FILES bootstrap.sh" ;;
+  "Makefile" ) CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+  "doc/Makefile" ) CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
+  "lib/Makefile" ) CONFIG_FILES="$CONFIG_FILES lib/Makefile" ;;
+  "sed/Makefile" ) CONFIG_FILES="$CONFIG_FILES sed/Makefile" ;;
+  "testsuite/Makefile" ) CONFIG_FILES="$CONFIG_FILES testsuite/Makefile" ;;
+  "po/Makefile.in" ) CONFIG_FILES="$CONFIG_FILES po/Makefile.in" ;;
+  "intl/Makefile" ) CONFIG_FILES="$CONFIG_FILES intl/Makefile" ;;
+  "lib/regex.h" ) CONFIG_LINKS="$CONFIG_LINKS lib/regex.h:lib/regex_.h" ;;
+  "depfiles" ) CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
+  "default-1" ) CONFIG_COMMANDS="$CONFIG_COMMANDS default-1" ;;
+  "gettext-fix" ) CONFIG_COMMANDS="$CONFIG_COMMANDS gettext-fix" ;;
+  "config.h" ) CONFIG_HEADERS="$CONFIG_HEADERS config.h:config_h.in" ;;
+  *) { { echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
+echo "$as_me: error: invalid argument: $ac_config_target" >&2;}
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+  test "${CONFIG_LINKS+set}" = set || CONFIG_LINKS=$config_links
+  test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason to put it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Create a temporary directory, and hook for its removal unless debugging.
+$debug ||
+{
+  trap 'exit_status=$?; rm -rf $tmp && exit $exit_status' 0
+  trap '{ (exit 1); exit 1; }' 1 2 13 15
+}
+
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d -q "./confstatXXXXXX") 2>/dev/null` &&
+  test -n "$tmp" && test -d "$tmp"
+}  ||
+{
+  tmp=./confstat$$-$RANDOM
+  (umask 077 && mkdir $tmp)
+} ||
+{
+   echo "$me: cannot create a temporary directory in ." >&2
+   { (exit 1); exit 1; }
+}
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<_ACEOF
+
+#
+# CONFIG_FILES section.
+#
+
+# No need to generate the scripts if there are no CONFIG_FILES.
+# This happens for instance when ./config.status config.h
+if test -n "\$CONFIG_FILES"; then
+  # Protect against being on the right side of a sed subst in config.status.
+  sed 's/,@/@@/; s/@,/@@/; s/,;t t\$/@;t t/; /@;t t\$/s/[\\\\&,]/\\\\&/g;
+   s/@@/,@/; s/@@/@,/; s/@;t t\$/,;t t/' >\$tmp/subs.sed <<\\CEOF
+s,@SHELL@,$SHELL,;t t
+s,@PATH_SEPARATOR@,$PATH_SEPARATOR,;t t
+s,@PACKAGE_NAME@,$PACKAGE_NAME,;t t
+s,@PACKAGE_TARNAME@,$PACKAGE_TARNAME,;t t
+s,@PACKAGE_VERSION@,$PACKAGE_VERSION,;t t
+s,@PACKAGE_STRING@,$PACKAGE_STRING,;t t
+s,@PACKAGE_BUGREPORT@,$PACKAGE_BUGREPORT,;t t
+s,@exec_prefix@,$exec_prefix,;t t
+s,@prefix@,$prefix,;t t
+s,@program_transform_name@,$program_transform_name,;t t
+s,@bindir@,$bindir,;t t
+s,@sbindir@,$sbindir,;t t
+s,@libexecdir@,$libexecdir,;t t
+s,@datadir@,$datadir,;t t
+s,@sysconfdir@,$sysconfdir,;t t
+s,@sharedstatedir@,$sharedstatedir,;t t
+s,@localstatedir@,$localstatedir,;t t
+s,@libdir@,$libdir,;t t
+s,@includedir@,$includedir,;t t
+s,@oldincludedir@,$oldincludedir,;t t
+s,@infodir@,$infodir,;t t
+s,@mandir@,$mandir,;t t
+s,@build_alias@,$build_alias,;t t
+s,@host_alias@,$host_alias,;t t
+s,@target_alias@,$target_alias,;t t
+s,@DEFS@,$DEFS,;t t
+s,@ECHO_C@,$ECHO_C,;t t
+s,@ECHO_N@,$ECHO_N,;t t
+s,@ECHO_T@,$ECHO_T,;t t
+s,@LIBS@,$LIBS,;t t
+s,@INSTALL_PROGRAM@,$INSTALL_PROGRAM,;t t
+s,@INSTALL_SCRIPT@,$INSTALL_SCRIPT,;t t
+s,@INSTALL_DATA@,$INSTALL_DATA,;t t
+s,@CYGPATH_W@,$CYGPATH_W,;t t
+s,@PACKAGE@,$PACKAGE,;t t
+s,@VERSION@,$VERSION,;t t
+s,@ACLOCAL@,$ACLOCAL,;t t
+s,@AUTOCONF@,$AUTOCONF,;t t
+s,@AUTOMAKE@,$AUTOMAKE,;t t
+s,@AUTOHEADER@,$AUTOHEADER,;t t
+s,@MAKEINFO@,$MAKEINFO,;t t
+s,@install_sh@,$install_sh,;t t
+s,@STRIP@,$STRIP,;t t
+s,@ac_ct_STRIP@,$ac_ct_STRIP,;t t
+s,@INSTALL_STRIP_PROGRAM@,$INSTALL_STRIP_PROGRAM,;t t
+s,@mkdir_p@,$mkdir_p,;t t
+s,@AWK@,$AWK,;t t
+s,@SET_MAKE@,$SET_MAKE,;t t
+s,@am__leading_dot@,$am__leading_dot,;t t
+s,@AMTAR@,$AMTAR,;t t
+s,@am__tar@,$am__tar,;t t
+s,@am__untar@,$am__untar,;t t
+s,@SED_FEATURE_VERSION@,$SED_FEATURE_VERSION,;t t
+s,@CC@,$CC,;t t
+s,@CFLAGS@,$CFLAGS,;t t
+s,@LDFLAGS@,$LDFLAGS,;t t
+s,@CPPFLAGS@,$CPPFLAGS,;t t
+s,@ac_ct_CC@,$ac_ct_CC,;t t
+s,@EXEEXT@,$EXEEXT,;t t
+s,@OBJEXT@,$OBJEXT,;t t
+s,@DEPDIR@,$DEPDIR,;t t
+s,@am__include@,$am__include,;t t
+s,@am__quote@,$am__quote,;t t
+s,@AMDEP_TRUE@,$AMDEP_TRUE,;t t
+s,@AMDEP_FALSE@,$AMDEP_FALSE,;t t
+s,@AMDEPBACKSLASH@,$AMDEPBACKSLASH,;t t
+s,@CCDEPMODE@,$CCDEPMODE,;t t
+s,@am__fastdepCC_TRUE@,$am__fastdepCC_TRUE,;t t
+s,@am__fastdepCC_FALSE@,$am__fastdepCC_FALSE,;t t
+s,@RANLIB@,$RANLIB,;t t
+s,@ac_ct_RANLIB@,$ac_ct_RANLIB,;t t
+s,@CPP@,$CPP,;t t
+s,@EGREP@,$EGREP,;t t
+s,@HAVE__BOOL@,$HAVE__BOOL,;t t
+s,@ALLOCA@,$ALLOCA,;t t
+s,@LIBOBJS@,$LIBOBJS,;t t
+s,@TEST_REGEX_TRUE@,$TEST_REGEX_TRUE,;t t
+s,@TEST_REGEX_FALSE@,$TEST_REGEX_FALSE,;t t
+s,@BUILD_HTML_TRUE@,$BUILD_HTML_TRUE,;t t
+s,@BUILD_HTML_FALSE@,$BUILD_HTML_FALSE,;t t
+s,@TEXI2HTML@,$TEXI2HTML,;t t
+s,@MAKEINFO_HTML_TRUE@,$MAKEINFO_HTML_TRUE,;t t
+s,@MAKEINFO_HTML_FALSE@,$MAKEINFO_HTML_FALSE,;t t
+s,@TEXI2HTML_HTML_TRUE@,$TEXI2HTML_HTML_TRUE,;t t
+s,@TEXI2HTML_HTML_FALSE@,$TEXI2HTML_HTML_FALSE,;t t
+s,@MKINSTALLDIRS@,$MKINSTALLDIRS,;t t
+s,@MSGFMT@,$MSGFMT,;t t
+s,@GMSGFMT@,$GMSGFMT,;t t
+s,@XGETTEXT@,$XGETTEXT,;t t
+s,@MSGMERGE@,$MSGMERGE,;t t
+s,@build@,$build,;t t
+s,@build_cpu@,$build_cpu,;t t
+s,@build_vendor@,$build_vendor,;t t
+s,@build_os@,$build_os,;t t
+s,@host@,$host,;t t
+s,@host_cpu@,$host_cpu,;t t
+s,@host_vendor@,$host_vendor,;t t
+s,@host_os@,$host_os,;t t
+s,@GLIBC21@,$GLIBC21,;t t
+s,@LIBICONV@,$LIBICONV,;t t
+s,@LTLIBICONV@,$LTLIBICONV,;t t
+s,@INTLBISON@,$INTLBISON,;t t
+s,@USE_NLS@,$USE_NLS,;t t
+s,@BUILD_INCLUDED_LIBINTL@,$BUILD_INCLUDED_LIBINTL,;t t
+s,@USE_INCLUDED_LIBINTL@,$USE_INCLUDED_LIBINTL,;t t
+s,@CATOBJEXT@,$CATOBJEXT,;t t
+s,@INTLOBJS@,$INTLOBJS,;t t
+s,@DATADIRNAME@,$DATADIRNAME,;t t
+s,@INSTOBJEXT@,$INSTOBJEXT,;t t
+s,@GENCAT@,$GENCAT,;t t
+s,@INTL_LIBTOOL_SUFFIX_PREFIX@,$INTL_LIBTOOL_SUFFIX_PREFIX,;t t
+s,@INTLLIBS@,$INTLLIBS,;t t
+s,@LIBINTL@,$LIBINTL,;t t
+s,@LTLIBINTL@,$LTLIBINTL,;t t
+s,@POSUB@,$POSUB,;t t
+s,@LTLIBOBJS@,$LTLIBOBJS,;t t
+CEOF
+
+_ACEOF
+
+  cat >>$CONFIG_STATUS <<\_ACEOF
+  # Split the substitutions into bite-sized pieces for seds with
+  # small command number limits, like on Digital OSF/1 and HP-UX.
+  ac_max_sed_lines=48
+  ac_sed_frag=1 # Number of current file.
+  ac_beg=1 # First line for current file.
+  ac_end=$ac_max_sed_lines # Line after last line for current file.
+  ac_more_lines=:
+  ac_sed_cmds=
+  while $ac_more_lines; do
+    if test $ac_beg -gt 1; then
+      sed "1,${ac_beg}d; ${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
+    else
+      sed "${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
+    fi
+    if test ! -s $tmp/subs.frag; then
+      ac_more_lines=false
+    else
+      # The purpose of the label and of the branching condition is to
+      # speed up the sed processing (if there are no `@' at all, there
+      # is no need to browse any of the substitutions).
+      # These are the two extra sed commands mentioned above.
+      (echo ':t
+  /@[a-zA-Z_][a-zA-Z_0-9]*@/!b' && cat $tmp/subs.frag) >$tmp/subs-$ac_sed_frag.sed
+      if test -z "$ac_sed_cmds"; then
+	ac_sed_cmds="sed -f $tmp/subs-$ac_sed_frag.sed"
+      else
+	ac_sed_cmds="$ac_sed_cmds | sed -f $tmp/subs-$ac_sed_frag.sed"
+      fi
+      ac_sed_frag=`expr $ac_sed_frag + 1`
+      ac_beg=$ac_end
+      ac_end=`expr $ac_end + $ac_max_sed_lines`
+    fi
+  done
+  if test -z "$ac_sed_cmds"; then
+    ac_sed_cmds=cat
+  fi
+fi # test -n "$CONFIG_FILES"
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+for ac_file in : $CONFIG_FILES; do test "x$ac_file" = x: && continue
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case $ac_file in
+  - | *:- | *:-:* ) # input from stdin
+	cat >$tmp/stdin
+	ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  *:* ) ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  * )   ac_file_in=$ac_file.in ;;
+  esac
+
+  # Compute @srcdir@, @top_srcdir@, and @INSTALL@ for subdirectories.
+  ac_dir=`(dirname "$ac_file") 2>/dev/null ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+  ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+
+# Do not use `cd foo && pwd` to compute absolute paths, because
+# the directories may not exist.
+case `pwd` in
+.) ac_abs_builddir="$ac_dir";;
+*)
+  case "$ac_dir" in
+  .) ac_abs_builddir=`pwd`;;
+  [\\/]* | ?:[\\/]* ) ac_abs_builddir="$ac_dir";;
+  *) ac_abs_builddir=`pwd`/"$ac_dir";;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_builddir=${ac_top_builddir}.;;
+*)
+  case ${ac_top_builddir}. in
+  .) ac_abs_top_builddir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_builddir=${ac_top_builddir}.;;
+  *) ac_abs_top_builddir=$ac_abs_builddir/${ac_top_builddir}.;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_srcdir=$ac_srcdir;;
+*)
+  case $ac_srcdir in
+  .) ac_abs_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_srcdir=$ac_srcdir;;
+  *) ac_abs_srcdir=$ac_abs_builddir/$ac_srcdir;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_srcdir=$ac_top_srcdir;;
+*)
+  case $ac_top_srcdir in
+  .) ac_abs_top_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_srcdir=$ac_top_srcdir;;
+  *) ac_abs_top_srcdir=$ac_abs_builddir/$ac_top_srcdir;;
+  esac;;
+esac
+
+
+  case $INSTALL in
+  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+  *) ac_INSTALL=$ac_top_builddir$INSTALL ;;
+  esac
+
+  if test x"$ac_file" != x-; then
+    { echo "$as_me:$LINENO: creating $ac_file" >&5
+echo "$as_me: creating $ac_file" >&6;}
+    rm -f "$ac_file"
+  fi
+  # Let's still pretend it is `configure' which instantiates (i.e., don't
+  # use $as_me), people would be surprised to read:
+  #    /* config.h.  Generated by config.status.  */
+  if test x"$ac_file" = x-; then
+    configure_input=
+  else
+    configure_input="$ac_file.  "
+  fi
+  configure_input=$configure_input"Generated from `echo $ac_file_in |
+				     sed 's,.*/,,'` by configure."
+
+  # First look for the input files in the build tree, otherwise in the
+  # src tree.
+  ac_file_inputs=`IFS=:
+    for f in $ac_file_in; do
+      case $f in
+      -) echo $tmp/stdin ;;
+      [\\/$]*)
+	 # Absolute (can't be DOS-style, as IFS=:)
+	 test -f "$f" || { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 echo "$f";;
+      *) # Relative
+	 if test -f "$f"; then
+	   # Build tree
+	   echo "$f"
+	 elif test -f "$srcdir/$f"; then
+	   # Source tree
+	   echo "$srcdir/$f"
+	 else
+	   # /dev/null tree
+	   { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 fi;;
+      esac
+    done` || { (exit 1); exit 1; }
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF
+  sed "$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s,@configure_input@,$configure_input,;t t
+s,@srcdir@,$ac_srcdir,;t t
+s,@abs_srcdir@,$ac_abs_srcdir,;t t
+s,@top_srcdir@,$ac_top_srcdir,;t t
+s,@abs_top_srcdir@,$ac_abs_top_srcdir,;t t
+s,@builddir@,$ac_builddir,;t t
+s,@abs_builddir@,$ac_abs_builddir,;t t
+s,@top_builddir@,$ac_top_builddir,;t t
+s,@abs_top_builddir@,$ac_abs_top_builddir,;t t
+s,@INSTALL@,$ac_INSTALL,;t t
+" $ac_file_inputs | (eval "$ac_sed_cmds") >$tmp/out
+  rm -f $tmp/stdin
+  if test x"$ac_file" != x-; then
+    mv $tmp/out $ac_file
+  else
+    cat $tmp/out
+    rm -f $tmp/out
+  fi
+
+  # Run the commands associated with the file.
+  case $ac_file in
+    bootstrap.sh ) chmod +x bootstrap.sh ;;
+  esac
+done
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+#
+# CONFIG_HEADER section.
+#
+
+# These sed commands are passed to sed as "A NAME B NAME C VALUE D", where
+# NAME is the cpp macro being defined and VALUE is the value it is being given.
+#
+# ac_d sets the value in "#define NAME VALUE" lines.
+ac_dA='s,^\([	 ]*\)#\([	 ]*define[	 ][	 ]*\)'
+ac_dB='[	 ].*$,\1#\2'
+ac_dC=' '
+ac_dD=',;t'
+# ac_u turns "#undef NAME" without trailing blanks into "#define NAME VALUE".
+ac_uA='s,^\([	 ]*\)#\([	 ]*\)undef\([	 ][	 ]*\)'
+ac_uB='$,\1#\2define\3'
+ac_uC=' '
+ac_uD=',;t'
+
+for ac_file in : $CONFIG_HEADERS; do test "x$ac_file" = x: && continue
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case $ac_file in
+  - | *:- | *:-:* ) # input from stdin
+	cat >$tmp/stdin
+	ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  *:* ) ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  * )   ac_file_in=$ac_file.in ;;
+  esac
+
+  test x"$ac_file" != x- && { echo "$as_me:$LINENO: creating $ac_file" >&5
+echo "$as_me: creating $ac_file" >&6;}
+
+  # First look for the input files in the build tree, otherwise in the
+  # src tree.
+  ac_file_inputs=`IFS=:
+    for f in $ac_file_in; do
+      case $f in
+      -) echo $tmp/stdin ;;
+      [\\/$]*)
+	 # Absolute (can't be DOS-style, as IFS=:)
+	 test -f "$f" || { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 # Do quote $f, to prevent DOS paths from being IFS'd.
+	 echo "$f";;
+      *) # Relative
+	 if test -f "$f"; then
+	   # Build tree
+	   echo "$f"
+	 elif test -f "$srcdir/$f"; then
+	   # Source tree
+	   echo "$srcdir/$f"
+	 else
+	   # /dev/null tree
+	   { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 fi;;
+      esac
+    done` || { (exit 1); exit 1; }
+  # Remove the trailing spaces.
+  sed 's/[	 ]*$//' $ac_file_inputs >$tmp/in
+
+_ACEOF
+
+# Transform confdefs.h into two sed scripts, `conftest.defines' and
+# `conftest.undefs', that substitutes the proper values into
+# config.h.in to produce config.h.  The first handles `#define'
+# templates, and the second `#undef' templates.
+# And first: Protect against being on the right side of a sed subst in
+# config.status.  Protect against being in an unquoted here document
+# in config.status.
+rm -f conftest.defines conftest.undefs
+# Using a here document instead of a string reduces the quoting nightmare.
+# Putting comments in sed scripts is not portable.
+#
+# `end' is used to avoid that the second main sed command (meant for
+# 0-ary CPP macros) applies to n-ary macro definitions.
+# See the Autoconf documentation for `clear'.
+cat >confdef2sed.sed <<\_ACEOF
+s/[\\&,]/\\&/g
+s,[\\$`],\\&,g
+t clear
+: clear
+s,^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 (][^	 (]*\)\(([^)]*)\)[	 ]*\(.*\)$,${ac_dA}\1${ac_dB}\1\2${ac_dC}\3${ac_dD},gp
+t end
+s,^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 ][^	 ]*\)[	 ]*\(.*\)$,${ac_dA}\1${ac_dB}\1${ac_dC}\2${ac_dD},gp
+: end
+_ACEOF
+# If some macros were called several times there might be several times
+# the same #defines, which is useless.  Nevertheless, we may not want to
+# sort them, since we want the *last* AC-DEFINE to be honored.
+uniq confdefs.h | sed -n -f confdef2sed.sed >conftest.defines
+sed 's/ac_d/ac_u/g' conftest.defines >conftest.undefs
+rm -f confdef2sed.sed
+
+# This sed command replaces #undef with comments.  This is necessary, for
+# example, in the case of _POSIX_SOURCE, which is predefined and required
+# on some systems where configure will not decide to define it.
+cat >>conftest.undefs <<\_ACEOF
+s,^[	 ]*#[	 ]*undef[	 ][	 ]*[a-zA-Z_][a-zA-Z_0-9]*,/* & */,
+_ACEOF
+
+# Break up conftest.defines because some shells have a limit on the size
+# of here documents, and old seds have small limits too (100 cmds).
+echo '  # Handle all the #define templates only if necessary.' >>$CONFIG_STATUS
+echo '  if grep "^[	 ]*#[	 ]*define" $tmp/in >/dev/null; then' >>$CONFIG_STATUS
+echo '  # If there are no defines, we may have an empty if/fi' >>$CONFIG_STATUS
+echo '  :' >>$CONFIG_STATUS
+rm -f conftest.tail
+while grep . conftest.defines >/dev/null
+do
+  # Write a limited-size here document to $tmp/defines.sed.
+  echo '  cat >$tmp/defines.sed <<CEOF' >>$CONFIG_STATUS
+  # Speed up: don't consider the non `#define' lines.
+  echo '/^[	 ]*#[	 ]*define/!b' >>$CONFIG_STATUS
+  # Work around the forget-to-reset-the-flag bug.
+  echo 't clr' >>$CONFIG_STATUS
+  echo ': clr' >>$CONFIG_STATUS
+  sed ${ac_max_here_lines}q conftest.defines >>$CONFIG_STATUS
+  echo 'CEOF
+  sed -f $tmp/defines.sed $tmp/in >$tmp/out
+  rm -f $tmp/in
+  mv $tmp/out $tmp/in
+' >>$CONFIG_STATUS
+  sed 1,${ac_max_here_lines}d conftest.defines >conftest.tail
+  rm -f conftest.defines
+  mv conftest.tail conftest.defines
+done
+rm -f conftest.defines
+echo '  fi # grep' >>$CONFIG_STATUS
+echo >>$CONFIG_STATUS
+
+# Break up conftest.undefs because some shells have a limit on the size
+# of here documents, and old seds have small limits too (100 cmds).
+echo '  # Handle all the #undef templates' >>$CONFIG_STATUS
+rm -f conftest.tail
+while grep . conftest.undefs >/dev/null
+do
+  # Write a limited-size here document to $tmp/undefs.sed.
+  echo '  cat >$tmp/undefs.sed <<CEOF' >>$CONFIG_STATUS
+  # Speed up: don't consider the non `#undef'
+  echo '/^[	 ]*#[	 ]*undef/!b' >>$CONFIG_STATUS
+  # Work around the forget-to-reset-the-flag bug.
+  echo 't clr' >>$CONFIG_STATUS
+  echo ': clr' >>$CONFIG_STATUS
+  sed ${ac_max_here_lines}q conftest.undefs >>$CONFIG_STATUS
+  echo 'CEOF
+  sed -f $tmp/undefs.sed $tmp/in >$tmp/out
+  rm -f $tmp/in
+  mv $tmp/out $tmp/in
+' >>$CONFIG_STATUS
+  sed 1,${ac_max_here_lines}d conftest.undefs >conftest.tail
+  rm -f conftest.undefs
+  mv conftest.tail conftest.undefs
+done
+rm -f conftest.undefs
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+  # Let's still pretend it is `configure' which instantiates (i.e., don't
+  # use $as_me), people would be surprised to read:
+  #    /* config.h.  Generated by config.status.  */
+  if test x"$ac_file" = x-; then
+    echo "/* Generated by configure.  */" >$tmp/config.h
+  else
+    echo "/* $ac_file.  Generated by configure.  */" >$tmp/config.h
+  fi
+  cat $tmp/in >>$tmp/config.h
+  rm -f $tmp/in
+  if test x"$ac_file" != x-; then
+    if diff $ac_file $tmp/config.h >/dev/null 2>&1; then
+      { echo "$as_me:$LINENO: $ac_file is unchanged" >&5
+echo "$as_me: $ac_file is unchanged" >&6;}
+    else
+      ac_dir=`(dirname "$ac_file") 2>/dev/null ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+      { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+      rm -f $ac_file
+      mv $tmp/config.h $ac_file
+    fi
+  else
+    cat $tmp/config.h
+    rm -f $tmp/config.h
+  fi
+# Compute $ac_file's index in $config_headers.
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+  case $_am_header in
+    $ac_file | $ac_file:* )
+      break ;;
+    * )
+      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+  esac
+done
+echo "timestamp for $ac_file" >`(dirname $ac_file) 2>/dev/null ||
+$as_expr X$ac_file : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X$ac_file : 'X\(//\)[^/]' \| \
+	 X$ac_file : 'X\(//\)$' \| \
+	 X$ac_file : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X$ac_file |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`/stamp-h$_am_stamp_count
+done
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+#
+# CONFIG_LINKS section.
+#
+
+for ac_file in : $CONFIG_LINKS; do test "x$ac_file" = x: && continue
+  ac_dest=`echo "$ac_file" | sed 's,:.*,,'`
+  ac_source=`echo "$ac_file" | sed 's,[^:]*:,,'`
+
+  { echo "$as_me:$LINENO: linking $srcdir/$ac_source to $ac_dest" >&5
+echo "$as_me: linking $srcdir/$ac_source to $ac_dest" >&6;}
+
+  if test ! -r $srcdir/$ac_source; then
+    { { echo "$as_me:$LINENO: error: $srcdir/$ac_source: file not found" >&5
+echo "$as_me: error: $srcdir/$ac_source: file not found" >&2;}
+   { (exit 1); exit 1; }; }
+  fi
+  rm -f $ac_dest
+
+  # Make relative symlinks.
+  ac_dest_dir=`(dirname "$ac_dest") 2>/dev/null ||
+$as_expr X"$ac_dest" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_dest" : 'X\(//\)[^/]' \| \
+	 X"$ac_dest" : 'X\(//\)$' \| \
+	 X"$ac_dest" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_dest" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  { if $as_mkdir_p; then
+    mkdir -p "$ac_dest_dir"
+  else
+    as_dir="$ac_dest_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dest_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dest_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+  ac_builddir=.
+
+if test "$ac_dest_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dest_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+
+# Do not use `cd foo && pwd` to compute absolute paths, because
+# the directories may not exist.
+case `pwd` in
+.) ac_abs_builddir="$ac_dest_dir";;
+*)
+  case "$ac_dest_dir" in
+  .) ac_abs_builddir=`pwd`;;
+  [\\/]* | ?:[\\/]* ) ac_abs_builddir="$ac_dest_dir";;
+  *) ac_abs_builddir=`pwd`/"$ac_dest_dir";;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_builddir=${ac_top_builddir}.;;
+*)
+  case ${ac_top_builddir}. in
+  .) ac_abs_top_builddir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_builddir=${ac_top_builddir}.;;
+  *) ac_abs_top_builddir=$ac_abs_builddir/${ac_top_builddir}.;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_srcdir=$ac_srcdir;;
+*)
+  case $ac_srcdir in
+  .) ac_abs_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_srcdir=$ac_srcdir;;
+  *) ac_abs_srcdir=$ac_abs_builddir/$ac_srcdir;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_srcdir=$ac_top_srcdir;;
+*)
+  case $ac_top_srcdir in
+  .) ac_abs_top_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_srcdir=$ac_top_srcdir;;
+  *) ac_abs_top_srcdir=$ac_abs_builddir/$ac_top_srcdir;;
+  esac;;
+esac
+
+
+  case $srcdir in
+  [\\/$]* | ?:[\\/]* ) ac_rel_source=$srcdir/$ac_source ;;
+      *) ac_rel_source=$ac_top_builddir$srcdir/$ac_source ;;
+  esac
+
+  # Try a symlink, then a hard link, then a copy.
+  ln -s $ac_rel_source $ac_dest 2>/dev/null ||
+    ln $srcdir/$ac_source $ac_dest 2>/dev/null ||
+    cp -p $srcdir/$ac_source $ac_dest ||
+    { { echo "$as_me:$LINENO: error: cannot link or copy $srcdir/$ac_source to $ac_dest" >&5
+echo "$as_me: error: cannot link or copy $srcdir/$ac_source to $ac_dest" >&2;}
+   { (exit 1); exit 1; }; }
+done
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+#
+# CONFIG_COMMANDS section.
+#
+for ac_file in : $CONFIG_COMMANDS; do test "x$ac_file" = x: && continue
+  ac_dest=`echo "$ac_file" | sed 's,:.*,,'`
+  ac_source=`echo "$ac_file" | sed 's,[^:]*:,,'`
+  ac_dir=`(dirname "$ac_dest") 2>/dev/null ||
+$as_expr X"$ac_dest" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_dest" : 'X\(//\)[^/]' \| \
+	 X"$ac_dest" : 'X\(//\)$' \| \
+	 X"$ac_dest" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_dest" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+  ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+
+# Do not use `cd foo && pwd` to compute absolute paths, because
+# the directories may not exist.
+case `pwd` in
+.) ac_abs_builddir="$ac_dir";;
+*)
+  case "$ac_dir" in
+  .) ac_abs_builddir=`pwd`;;
+  [\\/]* | ?:[\\/]* ) ac_abs_builddir="$ac_dir";;
+  *) ac_abs_builddir=`pwd`/"$ac_dir";;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_builddir=${ac_top_builddir}.;;
+*)
+  case ${ac_top_builddir}. in
+  .) ac_abs_top_builddir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_builddir=${ac_top_builddir}.;;
+  *) ac_abs_top_builddir=$ac_abs_builddir/${ac_top_builddir}.;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_srcdir=$ac_srcdir;;
+*)
+  case $ac_srcdir in
+  .) ac_abs_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_srcdir=$ac_srcdir;;
+  *) ac_abs_srcdir=$ac_abs_builddir/$ac_srcdir;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_srcdir=$ac_top_srcdir;;
+*)
+  case $ac_top_srcdir in
+  .) ac_abs_top_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_srcdir=$ac_top_srcdir;;
+  *) ac_abs_top_srcdir=$ac_abs_builddir/$ac_top_srcdir;;
+  esac;;
+esac
+
+
+  { echo "$as_me:$LINENO: executing $ac_dest commands" >&5
+echo "$as_me: executing $ac_dest commands" >&6;}
+  case $ac_dest in
+    depfiles ) test x"$AMDEP_TRUE" != x"" || for mf in $CONFIG_FILES; do
+  # Strip MF so we end up with the name of the file.
+  mf=`echo "$mf" | sed -e 's/:.*$//'`
+  # Check whether this is an Automake generated Makefile or not.
+  # We used to match only the files named `Makefile.in', but
+  # some people rename them; so instead we look at the file content.
+  # Grep'ing the first line is not enough: some people post-process
+  # each Makefile.in and add a new line on top of each file to say so.
+  # So let's grep whole file.
+  if grep '^#.*generated by automake' $mf > /dev/null 2>&1; then
+    dirpart=`(dirname "$mf") 2>/dev/null ||
+$as_expr X"$mf" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$mf" : 'X\(//\)[^/]' \| \
+	 X"$mf" : 'X\(//\)$' \| \
+	 X"$mf" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$mf" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  else
+    continue
+  fi
+  # Extract the definition of DEPDIR, am__include, and am__quote
+  # from the Makefile without running `make'.
+  DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
+  test -z "$DEPDIR" && continue
+  am__include=`sed -n 's/^am__include = //p' < "$mf"`
+  test -z "am__include" && continue
+  am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
+  # When using ansi2knr, U may be empty or an underscore; expand it
+  U=`sed -n 's/^U = //p' < "$mf"`
+  # Find all dependency output files, they are included files with
+  # $(DEPDIR) in their names.  We invoke sed twice because it is the
+  # simplest approach to changing $(DEPDIR) to its actual value in the
+  # expansion.
+  for file in `sed -n "
+    s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
+       sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
+    # Make sure the directory exists.
+    test -f "$dirpart/$file" && continue
+    fdir=`(dirname "$file") 2>/dev/null ||
+$as_expr X"$file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$file" : 'X\(//\)[^/]' \| \
+	 X"$file" : 'X\(//\)$' \| \
+	 X"$file" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    { if $as_mkdir_p; then
+    mkdir -p $dirpart/$fdir
+  else
+    as_dir=$dirpart/$fdir
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory $dirpart/$fdir" >&5
+echo "$as_me: error: cannot create directory $dirpart/$fdir" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+    # echo "creating $dirpart/$file"
+    echo '# dummy' > "$dirpart/$file"
+  done
+done
+ ;;
+    default-1 )
+    for ac_file in $CONFIG_FILES; do
+      # Support "outfile[:infile[:infile...]]"
+      case "$ac_file" in
+        *:*) ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+      esac
+      # PO directories have a Makefile.in generated from Makefile.in.in.
+      case "$ac_file" in */Makefile.in)
+        # Adjust a relative srcdir.
+        ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'`
+        ac_dir_suffix="/`echo "$ac_dir"|sed 's%^\./%%'`"
+        ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'`
+        # In autoconf-2.13 it is called $ac_given_srcdir.
+        # In autoconf-2.50 it is called $srcdir.
+        test -n "$ac_given_srcdir" || ac_given_srcdir="$srcdir"
+        case "$ac_given_srcdir" in
+          .)  top_srcdir=`echo $ac_dots|sed 's%/$%%'` ;;
+          /*) top_srcdir="$ac_given_srcdir" ;;
+          *)  top_srcdir="$ac_dots$ac_given_srcdir" ;;
+        esac
+        if test -f "$ac_given_srcdir/$ac_dir/POTFILES.in"; then
+          rm -f "$ac_dir/POTFILES"
+          test -n "$as_me" && echo "$as_me: creating $ac_dir/POTFILES" || echo "creating $ac_dir/POTFILES"
+          cat "$ac_given_srcdir/$ac_dir/POTFILES.in" | sed -e "/^#/d" -e "/^[ 	]*\$/d" -e "s,.*,     $top_srcdir/& \\\\," | sed -e "\$s/\(.*\) \\\\/\1/" > "$ac_dir/POTFILES"
+          # ALL_LINGUAS, POFILES, GMOFILES, UPDATEPOFILES, DUMMYPOFILES depend
+          # on $ac_dir but don't depend on user-specified configuration
+          # parameters.
+          if test -f "$ac_given_srcdir/$ac_dir/LINGUAS"; then
+            # The LINGUAS file contains the set of available languages.
+            if test -n "$ALL_LINGUAS"; then
+              test -n "$as_me" && echo "$as_me: setting ALL_LINGUAS in configure.in is obsolete" || echo "setting ALL_LINGUAS in configure.in is obsolete"
+            fi
+            ALL_LINGUAS_=`sed -e "/^#/d" "$ac_given_srcdir/$ac_dir/LINGUAS"`
+            # Hide the ALL_LINGUAS assigment from automake.
+            eval 'ALL_LINGUAS''=$ALL_LINGUAS_'
+          fi
+          case "$ac_given_srcdir" in
+            .) srcdirpre= ;;
+            *) srcdirpre='$(srcdir)/' ;;
+          esac
+          POFILES=
+          GMOFILES=
+          UPDATEPOFILES=
+          DUMMYPOFILES=
+          for lang in $ALL_LINGUAS; do
+            POFILES="$POFILES $srcdirpre$lang.po"
+            GMOFILES="$GMOFILES $srcdirpre$lang.gmo"
+            UPDATEPOFILES="$UPDATEPOFILES $lang.po-update"
+            DUMMYPOFILES="$DUMMYPOFILES $lang.nop"
+          done
+          # CATALOGS depends on both $ac_dir and the user's LINGUAS
+          # environment variable.
+          INST_LINGUAS=
+          if test -n "$ALL_LINGUAS"; then
+            for presentlang in $ALL_LINGUAS; do
+              useit=no
+              if test "%UNSET%" != "$LINGUAS"; then
+                desiredlanguages="$LINGUAS"
+              else
+                desiredlanguages="$ALL_LINGUAS"
+              fi
+              for desiredlang in $desiredlanguages; do
+                # Use the presentlang catalog if desiredlang is
+                #   a. equal to presentlang, or
+                #   b. a variant of presentlang (because in this case,
+                #      presentlang can be used as a fallback for messages
+                #      which are not translated in the desiredlang catalog).
+                case "$desiredlang" in
+                  "$presentlang"*) useit=yes;;
+                esac
+              done
+              if test $useit = yes; then
+                INST_LINGUAS="$INST_LINGUAS $presentlang"
+              fi
+            done
+          fi
+          CATALOGS=
+          if test -n "$INST_LINGUAS"; then
+            for lang in $INST_LINGUAS; do
+              CATALOGS="$CATALOGS $lang.gmo"
+            done
+          fi
+          test -n "$as_me" && echo "$as_me: creating $ac_dir/Makefile" || echo "creating $ac_dir/Makefile"
+          sed -e "/^POTFILES =/r $ac_dir/POTFILES" -e "/^# Makevars/r $ac_given_srcdir/$ac_dir/Makevars" -e "s|@POFILES@|$POFILES|g" -e "s|@GMOFILES@|$GMOFILES|g" -e "s|@UPDATEPOFILES@|$UPDATEPOFILES|g" -e "s|@DUMMYPOFILES@|$DUMMYPOFILES|g" -e "s|@CATALOGS@|$CATALOGS|g" "$ac_dir/Makefile.in" > "$ac_dir/Makefile"
+          for f in "$ac_given_srcdir/$ac_dir"/Rules-*; do
+            if test -f "$f"; then
+              case "$f" in
+                *.orig | *.bak | *~) ;;
+                *) cat "$f" >> "$ac_dir/Makefile" ;;
+              esac
+            fi
+          done
+        fi
+        ;;
+      esac
+    done ;;
+    gettext-fix )
+  sed -e '/^mkinstalldirs *=/a\' \
+      -e "install_sh=$install_sh" \
+      -e 's/^mkinstalldirs *=.*/mkinstalldirs=$(MKINSTALLDIRS)/' \
+      intl/Makefile > intl/Makefile.tmp
+  mv intl/Makefile.tmp intl/Makefile
+  sed -e '/^mkinstalldirs *=/a\' \
+      -e "install_sh=$install_sh" \
+      -e 's/^mkinstalldirs *=.*/mkinstalldirs=$(MKINSTALLDIRS)/' \
+      po/Makefile > po/Makefile.tmp
+  mv po/Makefile.tmp po/Makefile ;;
+  esac
+done
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+{ (exit 0); exit 0; }
+_ACEOF
+chmod +x $CONFIG_STATUS
+ac_clean_files=$ac_clean_files_save
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || { (exit 1); exit 1; }
+fi
+
diff --git a/src/sed/configure.ac b/src/sed/configure.ac
new file mode 100644
index 0000000..7d79125
--- /dev/null
+++ b/src/sed/configure.ac
@@ -0,0 +1,163 @@
+dnl Process this file with -*- autoconf -*- to produce a configure script.
+AC_INIT(sed, 4.1.5, bonzini@gnu.org, sed)
+AC_CONFIG_AUX_DIR(config)
+AC_CONFIG_SRCDIR([sed/sed.c])
+AM_CONFIG_HEADER(config.h:config_h.in)
+AC_PREREQ(2.59)
+AM_INIT_AUTOMAKE
+
+SED_FEATURE_VERSION=4.1
+AC_DEFINE_UNQUOTED(SED_FEATURE_VERSION, "$SED_FEATURE_VERSION",
+  [Define to the version of GNU sed whose features are supported by this sed.])
+AC_SUBST(SED_FEATURE_VERSION)
+
+AC_PROG_CC
+AC_PROG_RANLIB
+AC_GNU_SOURCE
+AC_AIX
+AC_MINIX
+AC_ISC_POSIX
+AC_SYS_LARGEFILE
+AC_SYS_LONG_FILE_NAMES
+
+AC_CACHE_CHECK([whether -lcP is needed], [sed_cv_libcp_needed], [
+AC_TRY_RUN([
+#include <stdio.h>
+#include <errno.h>
+
+int main()
+{
+  FILE *fp;
+  int result;
+  errno = 0;
+  fp = fopen ("conftest.c", "r");
+  if (!fp) return 0;	   /* error, assume not needed */
+  result = fflush (fp) == EOF && errno == 0;
+  fclose (fp);
+  return result;
+}], [sed_cv_libcp_needed=no],
+    [sed_cv_libcp_needed=yes],
+    [sed_cv_libcp_needed="assuming no"])
+])
+if test "$sed_cv_libcp_needed" = yes; then
+  LIBS="-lcP $LIBS"
+fi
+
+AC_HEADER_DIRENT
+AC_CHECK_HEADERS(io.h limits.h locale.h stdarg.h alloca.h stddef.h errno.h \
+		 wchar.h wctype.h sys/file.h mcheck.h, [], [],
+		 [AC_INCLUDES_DEFAULT])
+AC_C_CONST
+AC_TYPE_SIZE_T
+AC_CHECK_TYPE(ssize_t, int)
+
+AC_HEADER_STDBOOL
+if test "$ac_cv_type__Bool" = no; then
+  HAVE__BOOL=0
+else
+  HAVE__BOOL=1
+fi
+AC_SUBST(HAVE__BOOL)
+if test "$ac_cv_header_stdbool_h" = no; then
+  AC_CONFIG_FILES(lib/stdbool.h:lib/stdbool_.h)
+fi
+
+AC_FUNC_ALLOCA
+AC_FUNC_VPRINTF
+AM_FUNC_GETLINE
+AC_FUNC_OBSTACK
+AC_FUNC_MBRTOWC
+AC_TYPE_MBSTATE_T
+gl_FUNC_STRVERSCMP
+AC_REPLACE_FUNCS(memchr memcmp memmove strerror mkstemp)
+AC_CHECK_FUNCS(isatty bcopy bzero isascii memcpy memset strchr strtoul popen \
+		pathconf isblank fchown fchmod setlocale wcrtomb wcscoll btowc)
+
+AC_ARG_ENABLE(i18n,
+[  --disable-i18n          disable internationalization (default=yes)], ,
+enable_i18n=yes)
+if test "x$enable_i18n" = xno; then
+  ac_cv_func_wcscoll=false
+fi
+
+AC_ARG_WITH(included-regex, 
+[  --with-included-regex   use included regex matcher (default=yes)], ,
+with_included_regex=yes)
+
+if test "x$with_included_regex" = xno; then
+  AC_CHECK_HEADERS(regex.h)
+  AC_CHECK_LIB(regex, re_search)
+  AC_CHECK_FUNC(re_search)
+  if test $ac_cv_header_regex_h = no || test $ac_cv_func_re_search = no; then
+    AC_MSG_WARN([GNU regex not found, falling back to the included version])
+    with_included_regex=yes
+  fi
+fi
+
+AC_ARG_ENABLE(regex-tests, 
+[  --enable-regex-tests    enable regex matcher regression tests (default=yes)],
+[if test "x$with_included_regex" = xno; then
+  enable_regex_tests=no
+fi],
+enable_regex_tests=$with_included_regex)
+
+AM_CONDITIONAL(TEST_REGEX, test "x$enable_regex_tests" != xno)
+if test "x$with_included_regex" != xno; then
+  AC_CONFIG_LINKS(lib/regex.h:lib/regex_.h)
+  AC_LIBOBJ(regex)
+fi
+if test "x$enable_regex_tests" = xyes; then
+  AC_DEFINE_UNQUOTED(_REGEX_RE_COMP, 1,
+    [Include BSD functions in regex, used by the testsuite])
+fi
+
+AC_ARG_ENABLE(html, 
+[  --enable-html           build HTML manual (default=no)], ,
+enable_html=no)
+
+AM_CONDITIONAL(BUILD_HTML, test "x$enable_html" != xno)
+
+: ${TEXI2HTML=texi2html -monolithic}
+AC_SUBST(TEXI2HTML)
+
+AC_MSG_CHECKING(how to build HTML documentation)
+if eval $am_missing_run makeinfo --help 2>&1 | grep .-html > /dev/null; then
+  AC_MSG_RESULT(with makeinfo)
+  enable_html=makeinfo
+else
+  if $TEXI2HTML --help 2>&1 | grep monolithic > /dev/null; then
+    AC_MSG_RESULT(with texi2html)
+    enable_html=texi2html
+  else
+    AC_MSG_RESULT(not built)
+    if test "x$enable_html" != xno; then
+      AC_MSG_ERROR(cannot build HTML documentation, install makeinfo 4.0 or texi2html)
+    fi
+    enable_html=no
+  fi
+fi 
+
+AM_CONDITIONAL(MAKEINFO_HTML, test "x$enable_html" = xmakeinfo)
+AM_CONDITIONAL(TEXI2HTML_HTML, test "x$enable_html" = xtexi2html)
+
+
+AC_DEFUN([AM_MKINSTALLDIRS], [MKINSTALLDIRS="$mkdir_p" AC_SUBST(MKINSTALLDIRS)])
+AM_GNU_GETTEXT_VERSION(0.14)
+AM_GNU_GETTEXT(no-libtool, need-ngettext, ../intl)
+dnl bird: made the 'expr/a\' stuff work on BSD. a\ only works when scripting there.
+AC_CONFIG_COMMANDS([gettext-fix], [
+  echo '/^mkinstalldirs *=/a\' > tmp.sed
+  echo "install_sh=$install_sh" >> tmp.sed
+  echo 's/^mkinstalldirs *=.*/mkinstalldirs=$(MKINSTALLDIRS)/' >> tmp.sed
+  sed -f tmp.sed intl/Makefile > intl/Makefile.tmp
+  mv intl/Makefile.tmp intl/Makefile
+  sed -f tmp.sed po/Makefile > po/Makefile.tmp
+  mv po/Makefile.tmp po/Makefile
+  rm -f tmp.sed], [
+  install_sh="$install_sh"])
+
+AC_CONFIG_FILES([bootstrap.sh], chmod +x bootstrap.sh)
+AC_CONFIG_FILES([Makefile doc/Makefile \
+lib/Makefile sed/Makefile testsuite/Makefile \
+po/Makefile.in intl/Makefile])
+AC_OUTPUT
diff --git a/src/sed/doc/Makefile.am b/src/sed/doc/Makefile.am
new file mode 100644
index 0000000..80ecafd
--- /dev/null
+++ b/src/sed/doc/Makefile.am
@@ -0,0 +1,55 @@
+## Process this file with automake to produce Makefile.in
+info_TEXINFOS = sed.texi
+sed_TEXINFOS = config.texi version.texi
+dist_man_MANS = sed.1
+dist_noinst_DATA = sed.x sed-in.texi
+dist_noinst_SCRIPTS = groupify.sed
+CLEANFILES = sed.html
+TEXI2DVI = $(top_srcdir)/config/texi2dvi --expand
+HELP2MAN = $(top_srcdir)/config/help2man
+SED = $(top_builddir)/sed/sed
+
+# To produce better quality output, in the example sed
+# scripts we group comments with lines following them;
+# since mantaining the "@group...@end group" manually
+# is a burden, we do this automatically
+$(srcdir)/sed.texi: sed-in.texi $(srcdir)/groupify.sed
+	sed -nf $(srcdir)/groupify.sed \
+	  < $(srcdir)/sed-in.texi > $(srcdir)/sed.texi
+
+sed.1: $(top_srcdir)/sed/sed.c $(top_srcdir)/configure.ac $(srcdir)/sed.x
+	$(HELP2MAN) --name "stream editor for filtering and transforming text" \
+	  -p sed --include $(srcdir)/sed.x $(SED) > $(srcdir)/sed.1
+
+dist-hook:
+	touch $(distdir)/sed.1
+
+# This rule is used if --enable-html is passed
+if BUILD_HTML
+docdir = $(datadir)/doc
+pkgdocdir = $(datadir)/doc/$(PACKAGE)-$(VERSION)
+pkgdoc_DATA = sed.html
+
+all: html
+
+html: sed.html
+
+.PHONY: html
+endif
+
+# Having a dependancy on sed.info automatically makes
+# sed.html dependant on sed.texi and all the included
+# sources
+if MAKEINFO_HTML
+sed.html: sed.texi sed.info
+	builddir=`pwd` && cd $(srcdir) && \
+	  $(MAKEINFO) --html --no-split -o $$builddir/sed.html sed.texi
+endif
+
+# These rules are used together with TEXI2HTML
+if TEXI2HTML_HTML
+sed.html: sed.texi sed.info
+	cp $(srcdir)/*.texi . && \
+	  $(TEXI2HTML) sed.texi && \
+	  rm *.texi
+endif
diff --git a/src/sed/doc/Makefile.in b/src/sed/doc/Makefile.in
new file mode 100644
index 0000000..39ca0f7
--- /dev/null
+++ b/src/sed/doc/Makefile.in
@@ -0,0 +1,632 @@
+# Makefile.in generated by automake 1.9.5 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005  Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+top_builddir = ..
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+INSTALL = @INSTALL@
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+subdir = doc
+DIST_COMMON = $(dist_man_MANS) $(dist_noinst_DATA) \
+	$(dist_noinst_SCRIPTS) $(sed_TEXINFOS) $(srcdir)/Makefile.am \
+	$(srcdir)/Makefile.in $(srcdir)/stamp-vti \
+	$(srcdir)/version.texi
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/config/codeset.m4 \
+	$(top_srcdir)/config/getline.m4 \
+	$(top_srcdir)/config/gettext-ver.m4 \
+	$(top_srcdir)/config/gettext.m4 \
+	$(top_srcdir)/config/glibc21.m4 $(top_srcdir)/config/iconv.m4 \
+	$(top_srcdir)/config/lcmessage.m4 \
+	$(top_srcdir)/config/lib-ld.m4 \
+	$(top_srcdir)/config/lib-link.m4 \
+	$(top_srcdir)/config/lib-prefix.m4 \
+	$(top_srcdir)/config/progtest.m4 \
+	$(top_srcdir)/config/stdbool.m4 \
+	$(top_srcdir)/config/strverscmp.m4 $(top_srcdir)/configure.ac
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+	$(ACLOCAL_M4)
+mkinstalldirs = $(install_sh) -d
+CONFIG_HEADER = $(top_builddir)/config.h
+CONFIG_CLEAN_FILES =
+SCRIPTS = $(dist_noinst_SCRIPTS)
+SOURCES =
+DIST_SOURCES =
+INFO_DEPS = $(srcdir)/sed.info
+TEXINFO_TEX = $(top_srcdir)/config/texinfo.tex
+am__TEXINFO_TEX_DIR = $(top_srcdir)/config
+DVIS = sed.dvi
+PDFS = sed.pdf
+PSS = sed.ps
+HTMLS = sed.html
+TEXINFOS = sed.texi
+TEXI2PDF = $(TEXI2DVI) --pdf --batch
+MAKEINFOHTML = $(MAKEINFO) --html
+AM_MAKEINFOHTMLFLAGS = $(AM_MAKEINFOFLAGS)
+DVIPS = dvips
+am__installdirs = "$(DESTDIR)$(infodir)" "$(DESTDIR)$(man1dir)" \
+	"$(DESTDIR)$(pkgdocdir)"
+man1dir = $(mandir)/man1
+NROFF = nroff
+MANS = $(dist_man_MANS)
+am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
+am__vpath_adj = case $$p in \
+    $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
+    *) f=$$p;; \
+  esac;
+am__strip_dir = `echo $$p | sed -e 's|^.*/||'`;
+pkgdocDATA_INSTALL = $(INSTALL_DATA)
+DATA = $(dist_noinst_DATA) $(pkgdoc_DATA)
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+ACLOCAL = @ACLOCAL@
+ALLOCA = @ALLOCA@
+AMDEP_FALSE = @AMDEP_FALSE@
+AMDEP_TRUE = @AMDEP_TRUE@
+AMTAR = @AMTAR@
+AUTOCONF = @AUTOCONF@
+AUTOHEADER = @AUTOHEADER@
+AUTOMAKE = @AUTOMAKE@
+AWK = @AWK@
+BUILD_HTML_FALSE = @BUILD_HTML_FALSE@
+BUILD_HTML_TRUE = @BUILD_HTML_TRUE@
+BUILD_INCLUDED_LIBINTL = @BUILD_INCLUDED_LIBINTL@
+CATOBJEXT = @CATOBJEXT@
+CC = @CC@
+CCDEPMODE = @CCDEPMODE@
+CFLAGS = @CFLAGS@
+CPP = @CPP@
+CPPFLAGS = @CPPFLAGS@
+CYGPATH_W = @CYGPATH_W@
+DATADIRNAME = @DATADIRNAME@
+DEFS = @DEFS@
+DEPDIR = @DEPDIR@
+ECHO_C = @ECHO_C@
+ECHO_N = @ECHO_N@
+ECHO_T = @ECHO_T@
+EGREP = @EGREP@
+EXEEXT = @EXEEXT@
+GENCAT = @GENCAT@
+GLIBC21 = @GLIBC21@
+GMSGFMT = @GMSGFMT@
+HAVE__BOOL = @HAVE__BOOL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INSTOBJEXT = @INSTOBJEXT@
+INTLBISON = @INTLBISON@
+INTLLIBS = @INTLLIBS@
+INTLOBJS = @INTLOBJS@
+INTL_LIBTOOL_SUFFIX_PREFIX = @INTL_LIBTOOL_SUFFIX_PREFIX@
+LDFLAGS = @LDFLAGS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBOBJS = @LIBOBJS@
+LIBS = @LIBS@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBOBJS = @LTLIBOBJS@
+MAKEINFO = @MAKEINFO@
+MAKEINFO_HTML_FALSE = @MAKEINFO_HTML_FALSE@
+MAKEINFO_HTML_TRUE = @MAKEINFO_HTML_TRUE@
+MKINSTALLDIRS = @MKINSTALLDIRS@
+MSGFMT = @MSGFMT@
+MSGMERGE = @MSGMERGE@
+OBJEXT = @OBJEXT@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+POSUB = @POSUB@
+RANLIB = @RANLIB@
+SED_FEATURE_VERSION = @SED_FEATURE_VERSION@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+STRIP = @STRIP@
+TEST_REGEX_FALSE = @TEST_REGEX_FALSE@
+TEST_REGEX_TRUE = @TEST_REGEX_TRUE@
+TEXI2HTML = @TEXI2HTML@
+TEXI2HTML_HTML_FALSE = @TEXI2HTML_HTML_FALSE@
+TEXI2HTML_HTML_TRUE = @TEXI2HTML_HTML_TRUE@
+USE_INCLUDED_LIBINTL = @USE_INCLUDED_LIBINTL@
+USE_NLS = @USE_NLS@
+VERSION = @VERSION@
+XGETTEXT = @XGETTEXT@
+ac_ct_CC = @ac_ct_CC@
+ac_ct_RANLIB = @ac_ct_RANLIB@
+ac_ct_STRIP = @ac_ct_STRIP@
+am__fastdepCC_FALSE = @am__fastdepCC_FALSE@
+am__fastdepCC_TRUE = @am__fastdepCC_TRUE@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+datadir = @datadir@
+exec_prefix = @exec_prefix@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libdir = @libdir@
+libexecdir = @libexecdir@
+localstatedir = @localstatedir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+oldincludedir = @oldincludedir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+info_TEXINFOS = sed.texi
+sed_TEXINFOS = config.texi version.texi
+dist_man_MANS = sed.1
+dist_noinst_DATA = sed.x sed-in.texi
+dist_noinst_SCRIPTS = groupify.sed
+CLEANFILES = sed.html
+TEXI2DVI = $(top_srcdir)/config/texi2dvi --expand
+HELP2MAN = $(top_srcdir)/config/help2man
+SED = $(top_builddir)/sed/sed
+
+# This rule is used if --enable-html is passed
+@BUILD_HTML_TRUE@docdir = $(datadir)/doc
+@BUILD_HTML_TRUE@pkgdocdir = $(datadir)/doc/$(PACKAGE)-$(VERSION)
+@BUILD_HTML_TRUE@pkgdoc_DATA = sed.html
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .dvi .html .info .pdf .ps .texi
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh \
+		&& exit 0; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnits  doc/Makefile'; \
+	cd $(top_srcdir) && \
+	  $(AUTOMAKE) --gnits  doc/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+.texi.info:
+	restore=: && backupdir="$(am__leading_dot)am$$$$" && \
+	am__cwd=`pwd` && cd $(srcdir) && \
+	rm -rf $$backupdir && mkdir $$backupdir && \
+	for f in $@ $@-[0-9] $@-[0-9][0-9] $(@:.info=).i[0-9] $(@:.info=).i[0-9][0-9]; do \
+	  if test -f $$f; then mv $$f $$backupdir; restore=mv; else :; fi; \
+	done; \
+	cd "$$am__cwd"; \
+	if $(MAKEINFO) $(AM_MAKEINFOFLAGS) $(MAKEINFOFLAGS) -I $(srcdir) \
+	 -o $@ $<; \
+	then \
+	  rc=0; \
+	  cd $(srcdir); \
+	else \
+	  rc=$$?; \
+	  cd $(srcdir) && \
+	  $$restore $$backupdir/* `echo "./$@" | sed 's|[^/]*$$||'`; \
+	fi; \
+	rm -rf $$backupdir; exit $$rc
+
+.texi.dvi:
+	TEXINPUTS="$(am__TEXINFO_TEX_DIR)$(PATH_SEPARATOR)$$TEXINPUTS" \
+	MAKEINFO='$(MAKEINFO) $(AM_MAKEINFOFLAGS) $(MAKEINFOFLAGS) -I $(srcdir)' \
+	$(TEXI2DVI) $<
+
+.texi.pdf:
+	TEXINPUTS="$(am__TEXINFO_TEX_DIR)$(PATH_SEPARATOR)$$TEXINPUTS" \
+	MAKEINFO='$(MAKEINFO) $(AM_MAKEINFOFLAGS) $(MAKEINFOFLAGS) -I $(srcdir)' \
+	$(TEXI2PDF) $<
+
+.texi.html:
+	rm -rf $(@:.html=.htp)
+	if $(MAKEINFOHTML) $(AM_MAKEINFOHTMLFLAGS) $(MAKEINFOFLAGS) -I $(srcdir) \
+	 -o $(@:.html=.htp) $<; \
+	then \
+	  rm -rf $@; \
+	  if test ! -d $(@:.html=.htp) && test -d $(@:.html=); then \
+	    mv $(@:.html=) $@; else mv $(@:.html=.htp) $@; fi; \
+	else \
+	  if test ! -d $(@:.html=.htp) && test -d $(@:.html=); then \
+	    rm -rf $(@:.html=); else rm -Rf $(@:.html=.htp) $@; fi; \
+	  exit 1; \
+	fi
+$(srcdir)/sed.info: sed.texi $(srcdir)/version.texi $(sed_TEXINFOS)
+sed.dvi: sed.texi $(srcdir)/version.texi $(sed_TEXINFOS)
+sed.pdf: sed.texi $(srcdir)/version.texi $(sed_TEXINFOS)
+@MAKEINFO_HTML_FALSE@@TEXI2HTML_HTML_FALSE@sed.html: sed.texi $(srcdir)/version.texi $(sed_TEXINFOS)
+$(srcdir)/version.texi:  $(srcdir)/stamp-vti
+$(srcdir)/stamp-vti: sed.texi $(top_srcdir)/configure
+	@(dir=.; test -f ./sed.texi || dir=$(srcdir); \
+	set `$(SHELL) $(top_srcdir)/config/mdate-sh $$dir/sed.texi`; \
+	echo "@set UPDATED $$1 $$2 $$3"; \
+	echo "@set UPDATED-MONTH $$2 $$3"; \
+	echo "@set EDITION $(VERSION)"; \
+	echo "@set VERSION $(VERSION)") > vti.tmp
+	@cmp -s vti.tmp $(srcdir)/version.texi \
+	  || (echo "Updating $(srcdir)/version.texi"; \
+	      cp vti.tmp $(srcdir)/version.texi)
+	-@rm -f vti.tmp
+	@cp $(srcdir)/version.texi $@
+
+mostlyclean-vti:
+	-rm -f vti.tmp
+
+maintainer-clean-vti:
+	-rm -f $(srcdir)/stamp-vti $(srcdir)/version.texi
+.dvi.ps:
+	$(DVIPS) -o $@ $<
+
+uninstall-info-am:
+	@$(PRE_UNINSTALL)
+	@if (install-info --version && \
+	     install-info --version 2>&1 | sed 1q | grep -i -v debian) >/dev/null 2>&1; then \
+	  list='$(INFO_DEPS)'; \
+	  for file in $$list; do \
+	    relfile=`echo "$$file" | sed 's|^.*/||'`; \
+	    echo " install-info --info-dir='$(DESTDIR)$(infodir)' --remove '$(DESTDIR)$(infodir)/$$relfile'"; \
+	    install-info --info-dir="$(DESTDIR)$(infodir)" --remove "$(DESTDIR)$(infodir)/$$relfile"; \
+	  done; \
+	else :; fi
+	@$(NORMAL_UNINSTALL)
+	@list='$(INFO_DEPS)'; \
+	for file in $$list; do \
+	  relfile=`echo "$$file" | sed 's|^.*/||'`; \
+	  relfile_i=`echo "$$relfile" | sed 's|\.info$$||;s|$$|.i|'`; \
+	  (if cd "$(DESTDIR)$(infodir)"; then \
+	     echo " cd '$(DESTDIR)$(infodir)' && rm -f $$relfile $$relfile-[0-9] $$relfile-[0-9][0-9] $$relfile_i[0-9] $$relfile_i[0-9][0-9]"; \
+	     rm -f $$relfile $$relfile-[0-9] $$relfile-[0-9][0-9] $$relfile_i[0-9] $$relfile_i[0-9][0-9]; \
+	   else :; fi); \
+	done
+
+dist-info: $(INFO_DEPS)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
+	list='$(INFO_DEPS)'; \
+	for base in $$list; do \
+	  case $$base in \
+	    $(srcdir)/*) base=`echo "$$base" | sed "s|^$$srcdirstrip/||"`;; \
+	  esac; \
+	  if test -f $$base; then d=.; else d=$(srcdir); fi; \
+	  for file in $$d/$$base*; do \
+	    relfile=`expr "$$file" : "$$d/\(.*\)"`; \
+	    test -f $(distdir)/$$relfile || \
+	      cp -p $$file $(distdir)/$$relfile; \
+	  done; \
+	done
+
+mostlyclean-aminfo:
+	-rm -rf sed.aux sed.cp sed.cps sed.fn sed.fns sed.ky sed.log sed.op sed.pg \
+	  sed.tmp sed.toc sed.tp sed.vr sed.vrs sed.dvi sed.pdf sed.ps \
+	  sed.html
+
+maintainer-clean-aminfo:
+	@list='$(INFO_DEPS)'; for i in $$list; do \
+	  i_i=`echo "$$i" | sed 's|\.info$$||;s|$$|.i|'`; \
+	  echo " rm -f $$i $$i-[0-9] $$i-[0-9][0-9] $$i_i[0-9] $$i_i[0-9][0-9]"; \
+	  rm -f $$i $$i-[0-9] $$i-[0-9][0-9] $$i_i[0-9] $$i_i[0-9][0-9]; \
+	done
+install-man1: $(man1_MANS) $(man_MANS)
+	@$(NORMAL_INSTALL)
+	test -z "$(man1dir)" || $(mkdir_p) "$(DESTDIR)$(man1dir)"
+	@list='$(man1_MANS) $(dist_man1_MANS) $(nodist_man1_MANS)'; \
+	l2='$(man_MANS) $(dist_man_MANS) $(nodist_man_MANS)'; \
+	for i in $$l2; do \
+	  case "$$i" in \
+	    *.1*) list="$$list $$i" ;; \
+	  esac; \
+	done; \
+	for i in $$list; do \
+	  if test -f $(srcdir)/$$i; then file=$(srcdir)/$$i; \
+	  else file=$$i; fi; \
+	  ext=`echo $$i | sed -e 's/^.*\\.//'`; \
+	  case "$$ext" in \
+	    1*) ;; \
+	    *) ext='1' ;; \
+	  esac; \
+	  inst=`echo $$i | sed -e 's/\\.[0-9a-z]*$$//'`; \
+	  inst=`echo $$inst | sed -e 's/^.*\///'`; \
+	  inst=`echo $$inst | sed '$(transform)'`.$$ext; \
+	  echo " $(INSTALL_DATA) '$$file' '$(DESTDIR)$(man1dir)/$$inst'"; \
+	  $(INSTALL_DATA) "$$file" "$(DESTDIR)$(man1dir)/$$inst"; \
+	done
+uninstall-man1:
+	@$(NORMAL_UNINSTALL)
+	@list='$(man1_MANS) $(dist_man1_MANS) $(nodist_man1_MANS)'; \
+	l2='$(man_MANS) $(dist_man_MANS) $(nodist_man_MANS)'; \
+	for i in $$l2; do \
+	  case "$$i" in \
+	    *.1*) list="$$list $$i" ;; \
+	  esac; \
+	done; \
+	for i in $$list; do \
+	  ext=`echo $$i | sed -e 's/^.*\\.//'`; \
+	  case "$$ext" in \
+	    1*) ;; \
+	    *) ext='1' ;; \
+	  esac; \
+	  inst=`echo $$i | sed -e 's/\\.[0-9a-z]*$$//'`; \
+	  inst=`echo $$inst | sed -e 's/^.*\///'`; \
+	  inst=`echo $$inst | sed '$(transform)'`.$$ext; \
+	  echo " rm -f '$(DESTDIR)$(man1dir)/$$inst'"; \
+	  rm -f "$(DESTDIR)$(man1dir)/$$inst"; \
+	done
+install-pkgdocDATA: $(pkgdoc_DATA)
+	@$(NORMAL_INSTALL)
+	test -z "$(pkgdocdir)" || $(mkdir_p) "$(DESTDIR)$(pkgdocdir)"
+	@list='$(pkgdoc_DATA)'; for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  f=$(am__strip_dir) \
+	  echo " $(pkgdocDATA_INSTALL) '$$d$$p' '$(DESTDIR)$(pkgdocdir)/$$f'"; \
+	  $(pkgdocDATA_INSTALL) "$$d$$p" "$(DESTDIR)$(pkgdocdir)/$$f"; \
+	done
+
+uninstall-pkgdocDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(pkgdoc_DATA)'; for p in $$list; do \
+	  f=$(am__strip_dir) \
+	  echo " rm -f '$(DESTDIR)$(pkgdocdir)/$$f'"; \
+	  rm -f "$(DESTDIR)$(pkgdocdir)/$$f"; \
+	done
+tags: TAGS
+TAGS:
+
+ctags: CTAGS
+CTAGS:
+
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's|.|.|g'`; \
+	list='$(DISTFILES)'; for file in $$list; do \
+	  case $$file in \
+	    $(srcdir)/*) file=`echo "$$file" | sed "s|^$$srcdirstrip/||"`;; \
+	    $(top_srcdir)/*) file=`echo "$$file" | sed "s|^$$topsrcdirstrip/|$(top_builddir)/|"`;; \
+	  esac; \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \
+	  if test "$$dir" != "$$file" && test "$$dir" != "."; then \
+	    dir="/$$dir"; \
+	    $(mkdir_p) "$(distdir)$$dir"; \
+	  else \
+	    dir=''; \
+	  fi; \
+	  if test -d $$d/$$file; then \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
+	    fi; \
+	    cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
+	  else \
+	    test -f $(distdir)/$$file \
+	    || cp -p $$d/$$file $(distdir)/$$file \
+	    || exit 1; \
+	  fi; \
+	done
+	$(MAKE) $(AM_MAKEFLAGS) \
+	  top_distdir="$(top_distdir)" distdir="$(distdir)" \
+	  dist-info dist-hook
+check-am: all-am
+check: check-am
+all-am: Makefile $(INFO_DEPS) $(SCRIPTS) $(MANS) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(infodir)" "$(DESTDIR)$(man1dir)" "$(DESTDIR)$(pkgdocdir)"; do \
+	  test -z "$$dir" || $(mkdir_p) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am: $(DVIS)
+
+@BUILD_HTML_FALSE@html: html-am
+
+html-am: $(HTMLS)
+
+info: info-am
+
+info-am: $(INFO_DEPS)
+
+install-data-am: install-info-am install-man install-pkgdocDATA
+
+install-exec-am:
+
+install-info: install-info-am
+
+install-info-am: $(INFO_DEPS)
+	@$(NORMAL_INSTALL)
+	test -z "$(infodir)" || $(mkdir_p) "$(DESTDIR)$(infodir)"
+	@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
+	list='$(INFO_DEPS)'; \
+	for file in $$list; do \
+	  case $$file in \
+	    $(srcdir)/*) file=`echo "$$file" | sed "s|^$$srcdirstrip/||"`;; \
+	  esac; \
+	  if test -f $$file; then d=.; else d=$(srcdir); fi; \
+	  file_i=`echo "$$file" | sed 's|\.info$$||;s|$$|.i|'`; \
+	  for ifile in $$d/$$file $$d/$$file-[0-9] $$d/$$file-[0-9][0-9] \
+                       $$d/$$file_i[0-9] $$d/$$file_i[0-9][0-9] ; do \
+	    if test -f $$ifile; then \
+	      relfile=`echo "$$ifile" | sed 's|^.*/||'`; \
+	      echo " $(INSTALL_DATA) '$$ifile' '$(DESTDIR)$(infodir)/$$relfile'"; \
+	      $(INSTALL_DATA) "$$ifile" "$(DESTDIR)$(infodir)/$$relfile"; \
+	    else : ; fi; \
+	  done; \
+	done
+	@$(POST_INSTALL)
+	@if (install-info --version && \
+	     install-info --version 2>&1 | sed 1q | grep -i -v debian) >/dev/null 2>&1; then \
+	  list='$(INFO_DEPS)'; \
+	  for file in $$list; do \
+	    relfile=`echo "$$file" | sed 's|^.*/||'`; \
+	    echo " install-info --info-dir='$(DESTDIR)$(infodir)' '$(DESTDIR)$(infodir)/$$relfile'";\
+	    install-info --info-dir="$(DESTDIR)$(infodir)" "$(DESTDIR)$(infodir)/$$relfile" || :;\
+	  done; \
+	else : ; fi
+install-man: install-man1
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-aminfo \
+	maintainer-clean-generic maintainer-clean-vti
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-aminfo mostlyclean-generic mostlyclean-vti
+
+pdf: pdf-am
+
+pdf-am: $(PDFS)
+
+ps: ps-am
+
+ps-am: $(PSS)
+
+uninstall-am: uninstall-info-am uninstall-man uninstall-pkgdocDATA
+
+uninstall-man: uninstall-man1
+
+.PHONY: all all-am check check-am clean clean-generic dist-hook \
+	dist-info distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-exec install-exec-am install-info \
+	install-info-am install-man install-man1 install-pkgdocDATA \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-aminfo \
+	maintainer-clean-generic maintainer-clean-vti mostlyclean \
+	mostlyclean-aminfo mostlyclean-generic mostlyclean-vti pdf \
+	pdf-am ps ps-am uninstall uninstall-am uninstall-info-am \
+	uninstall-man uninstall-man1 uninstall-pkgdocDATA
+
+
+# To produce better quality output, in the example sed
+# scripts we group comments with lines following them;
+# since mantaining the "@group...@end group" manually
+# is a burden, we do this automatically
+$(srcdir)/sed.texi: sed-in.texi $(srcdir)/groupify.sed
+	sed -nf $(srcdir)/groupify.sed \
+	  < $(srcdir)/sed-in.texi > $(srcdir)/sed.texi
+
+sed.1: $(top_srcdir)/sed/sed.c $(top_srcdir)/configure.ac $(srcdir)/sed.x
+	$(HELP2MAN) --name "stream editor for filtering and transforming text" \
+	  -p sed --include $(srcdir)/sed.x $(SED) > $(srcdir)/sed.1
+
+dist-hook:
+	touch $(distdir)/sed.1
+
+@BUILD_HTML_TRUE@all: html
+
+@BUILD_HTML_TRUE@html: sed.html
+
+@BUILD_HTML_TRUE@.PHONY: html
+
+# Having a dependancy on sed.info automatically makes
+# sed.html dependant on sed.texi and all the included
+# sources
+@MAKEINFO_HTML_TRUE@sed.html: sed.texi sed.info
+@MAKEINFO_HTML_TRUE@	builddir=`pwd` && cd $(srcdir) && \
+@MAKEINFO_HTML_TRUE@	  $(MAKEINFO) --html --no-split -o $$builddir/sed.html sed.texi
+
+# These rules are used together with TEXI2HTML
+@TEXI2HTML_HTML_TRUE@sed.html: sed.texi sed.info
+@TEXI2HTML_HTML_TRUE@	cp $(srcdir)/*.texi . && \
+@TEXI2HTML_HTML_TRUE@	  $(TEXI2HTML) sed.texi && \
+@TEXI2HTML_HTML_TRUE@	  rm *.texi
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/sed/doc/config.texi b/src/sed/doc/config.texi
new file mode 100644
index 0000000..aa5e35a
--- /dev/null
+++ b/src/sed/doc/config.texi
@@ -0,0 +1,9 @@
+@dircategory Text creation and manipulation
+@direntry
+* sed: (sed).                   Stream EDitor.
+
+@end direntry
+
+@clear PERL
+@set SSEDEXT @acronym{GNU} extensions
+@set SSED @acronym{GNU} @command{sed}
diff --git a/src/sed/doc/groupify.sed b/src/sed/doc/groupify.sed
new file mode 100755
index 0000000..2430710
--- /dev/null
+++ b/src/sed/doc/groupify.sed
@@ -0,0 +1,59 @@
+#! /bin/sed -nf
+# Script to add @group...@end group tags to sed.texi.in
+# so that comments are not separated from the instructions
+# that they refer to.
+
+# Step 1: search for the conventional "@c start----" comment
+1a\
+@c Do not edit this file!! It is automatically generated from sed-in.texi.
+p
+/^@c start-*$/! b
+
+# Step 2: loop until we find a @ command
+:a
+n
+p
+/^@/! ba
+
+# Step 3: process everything until a "@end" command
+
+# Step 3.1: Print the blank lines before the group.  If we reach the "@end",
+#           we go back to step 1.
+:b
+n
+/^@end/ {
+  p
+  b
+}
+/^[ 	]*$/ {
+  p
+  bb
+}
+
+# Step 3.2: Add to hold space every line until an empty one or "@end"
+h
+:c
+n
+/^@end example/! {
+  /^[ 	]*$/! {
+    H
+    bc
+  }
+}
+
+# Step 3.3: Working in hold space, add @group...@end group if there are
+#           at least two lines.  Then print the lines we processed and
+#	    switch back to pattern space.
+x
+/\n/ {
+  s/.*/@group\
+&\
+@end group/
+}
+p
+
+# Step 3.4: Switch back to pattern space, print the first blank line
+#           and possibly go back to step 3.1
+x
+p
+/^@end/ !bb
diff --git a/src/sed/doc/sed-in.texi b/src/sed/doc/sed-in.texi
new file mode 100644
index 0000000..3becf31
--- /dev/null
+++ b/src/sed/doc/sed-in.texi
@@ -0,0 +1,4052 @@
+\input texinfo  @c -*-texinfo-*-
+@c
+@c -- Stuff that needs adding: ----------------------------------------------
+@c (document the `;' command-separator)
+@c --------------------------------------------------------------------------
+@c Check for consistency: regexps in @code, text that they match in @samp.
+@c 
+@c Tips:
+@c    @command for command
+@c    @samp for command fragments: @samp{cat -s}
+@c    @code for sed commands and flags
+@c    Use ``quote'' not `quote' or "quote".
+@c
+@c %**start of header
+@setfilename sed.info
+@settitle sed, a stream editor
+@c %**end of header
+
+@c @smallbook
+
+@include version.texi
+
+@c Combine indices.
+@syncodeindex ky cp
+@syncodeindex pg cp
+@syncodeindex tp cp
+
+@defcodeindex op
+@syncodeindex op fn
+
+@include config.texi
+
+@copying
+This file documents version @value{VERSION} of
+@value{SSED}, a stream editor.
+
+Copyright @copyright{} 1998, 1999, 2001, 2002, 2003, 2004 Free
+Software Foundation, Inc.
+
+This document is released under the terms of the @acronym{GNU} Free
+Documentation License as published by the Free Software Foundation;
+either version 1.1, or (at your option) any later version.
+
+You should have received a copy of the @acronym{GNU} Free Documentation
+License along with @value{SSED}; see the file @file{COPYING.DOC}.
+If not, write to the Free Software Foundation, 59 Temple Place - Suite
+330, Boston, MA 02110-1301, USA.
+
+There are no Cover Texts and no Invariant Sections; this text, along
+with its equivalent in the printed manual, constitutes the Title Page.
+@end copying
+
+@setchapternewpage off
+
+@titlepage
+@title @command{sed}, a stream editor
+@subtitle version @value{VERSION}, @value{UPDATED}
+@author by Ken Pizzini, Paolo Bonzini
+
+@page
+@vskip 0pt plus 1filll
+Copyright @copyright{} 1998, 1999 Free Software Foundation, Inc.
+
+@insertcopying
+
+Published by the Free Software Foundation, @*
+51 Franklin Street, Fifth Floor @*
+Boston, MA 02110-1301, USA
+@end titlepage
+
+
+@node Top
+@top
+
+@ifnottex
+@insertcopying
+@end ifnottex
+
+@menu
+* Introduction::               Introduction
+* Invoking sed::               Invocation
+* sed Programs::               @command{sed} programs
+* Examples::                   Some sample scripts
+* Limitations::                Limitations and (non-)limitations of @value{SSED}
+* Other Resources::            Other resources for learning about @command{sed}
+* Reporting Bugs::             Reporting bugs
+
+* Extended regexps::           @command{egrep}-style regular expressions
+@ifset PERL
+* Perl regexps::               Perl-style regular expressions
+@end ifset
+
+* Concept Index::              A menu with all the topics in this manual.
+* Command and Option Index::   A menu with all @command{sed} commands and
+                               command-line options.
+
+@detailmenu
+--- The detailed node listing ---
+
+sed Programs:
+* Execution Cycle::                 How @command{sed} works
+* Addresses::                       Selecting lines with @command{sed}
+* Regular Expressions::             Overview of regular expression syntax
+* Common Commands::                 Often used commands
+* The "s" Command::                 @command{sed}'s Swiss Army Knife
+* Other Commands::                  Less frequently used commands
+* Programming Commands::            Commands for @command{sed} gurus
+* Extended Commands::               Commands specific of @value{SSED}
+* Escapes::                         Specifying special characters
+
+Examples:
+* Centering lines::
+* Increment a number::
+* Rename files to lower case::
+* Print bash environment::
+* Reverse chars of lines::
+* tac::                             Reverse lines of files
+* cat -n::                          Numbering lines
+* cat -b::                          Numbering non-blank lines
+* wc -c::                           Counting chars
+* wc -w::                           Counting words
+* wc -l::                           Counting lines
+* head::                            Printing the first lines
+* tail::                            Printing the last lines
+* uniq::                            Make duplicate lines unique
+* uniq -d::                         Print duplicated lines of input
+* uniq -u::                         Remove all duplicated lines
+* cat -s::                          Squeezing blank lines
+
+@ifset PERL
+Perl regexps::                      Perl-style regular expressions
+* Backslash::                       Introduces special sequences
+* Circumflex/dollar sign/period::   Behave specially with regard to new lines
+* Square brackets::                 Are a bit different in strange cases
+* Options setting::                 Toggle modifiers in the middle of a regexp
+* Non-capturing subpatterns::       Are not counted when backreferencing
+* Repetition::                      Allows for non-greedy matching
+* Backreferences::                  Allows for more than 10 back references
+* Assertions::                      Allows for complex look ahead matches
+* Non-backtracking subpatterns::    Often gives more performance
+* Conditional subpatterns::         Allows if/then/else branches
+* Recursive patterns::              For example to match parentheses
+* Comments::                        Because things can get complex...
+@end ifset
+
+@end detailmenu
+@end menu
+
+
+@node Introduction
+@chapter Introduction
+
+@cindex Stream editor
+@command{sed} is a stream editor.
+A stream editor is used to perform basic text
+transformations on an input stream
+(a file or input from a pipeline).
+While in some ways similar to an editor which
+permits scripted edits (such as @command{ed}),
+@command{sed} works by making only one pass over the
+input(s), and is consequently more efficient.
+But it is @command{sed}'s ability to filter text in a pipeline
+which particularly distinguishes it from other types of
+editors.
+
+
+@node Invoking sed
+@chapter Invocation
+
+Normally @command{sed} is invoked like this:
+
+@example
+sed SCRIPT INPUTFILE...
+@end example
+
+The full format for invoking @command{sed} is:
+
+@example
+sed OPTIONS... [SCRIPT] [INPUTFILE...]
+@end example
+
+If you do not specify @var{INPUTFILE}, or if @var{INPUTFILE} is @file{-},
+@command{sed} filters the contents of the standard input.  The @var{script}
+is actually the first non-option parameter, which @command{sed} specially
+considers a script and not an input file if (and only if) none of the
+other @var{options} specifies a script to be executed, that is if neither
+of the @option{-e} and @option{-f} options is specified.
+
+@command{sed} may be invoked with the following command-line options:
+
+@table @code
+@item --version
+@opindex --version
+@cindex Version, printing
+Print out the version of @command{sed} that is being run and a copyright notice,
+then exit.
+
+@item --help
+@opindex --help
+@cindex Usage summary, printing
+Print a usage message briefly summarizing these command-line options
+and the bug-reporting address,
+then exit.
+
+@item -n
+@itemx --quiet
+@itemx --silent
+@opindex -n
+@opindex --quiet
+@opindex --silent
+@cindex Disabling autoprint, from command line
+By default, @command{sed} prints out the pattern space
+at the end of each cycle through the script.
+These options disable this automatic printing,
+and @command{sed} only produces output when explicitly told to
+via the @code{p} command.
+
+@item -i[@var{SUFFIX}]
+@itemx --in-place[=@var{SUFFIX}]
+@opindex -i
+@opindex --in-place
+@cindex In-place editing, activating
+@cindex @value{SSEDEXT}, in-place editing
+This option specifies that files are to be edited in-place.
+@value{SSED} does this by creating a temporary file and
+sending output to this file rather than to the standard
+output.@footnote{This applies to commands such as @code{=},
+@code{a}, @code{c}, @code{i}, @code{l}, @code{p}.  You can
+still write to the standard output by using the @code{w}
+@cindex @value{SSEDEXT}, @file{/dev/stdout} file
+or @code{W} commands together with the @file{/dev/stdout}
+special file}.
+
+This option implies @option{-s}.
+
+When the end of the file is reached, the temporary file is
+renamed to the output file's original name.  The extension,
+if supplied, is used to modify the name of the old file
+before renaming the temporary file, thereby making a backup
+copy@footnote{Note that @value{SSED} creates the backup
+    file whether or not any output is actually changed.}).
+
+@cindex In-place editing, Perl-style backup file names
+This rule is followed: if the extension doesn't contain a @code{*},
+then it is appended to the end of the current filename as a
+suffix; if the extension does contain one or more @code{*}
+characters, then @emph{each} asterisk is replaced with the
+current filename.  This allows you to add a prefix to the
+backup file, instead of (or in addition to) a suffix, or
+even to place backup copies of the original files into another
+directory (provided the directory already exists).
+
+If no extension is supplied, the original file is
+overwritten without making a backup.
+
+@item -l @var{N}
+@itemx --line-length=@var{N}
+@opindex -l
+@opindex --line-length
+@cindex Line length, setting
+Specify the default line-wrap length for the @code{l} command.
+A length of 0 (zero) means to never wrap long lines.  If
+not specified, it is taken to be 70.
+
+@item --posix
+@cindex @value{SSEDEXT}, disabling
+@value{SSED} includes several extensions to @acronym{POSIX}
+sed.  In order to simplify writing portable scripts, this
+option disables all the extensions that this manual documents,
+including additional commands.
+@cindex @code{POSIXLY_CORRECT} behavior, enabling
+Most of the extensions accept @command{sed} programs that
+are outside the syntax mandated by @acronym{POSIX}, but some
+of them (such as the behavior of the @command{N} command
+described in @pxref{Reporting Bugs}) actually violate the
+standard.  If you want to disable only the latter kind of
+extension, you can set the @code{POSIXLY_CORRECT} variable
+to a non-empty value.
+
+@item -r
+@itemx --regexp-extended
+@opindex -r
+@opindex --regexp-extended
+@cindex Extended regular expressions, choosing
+@cindex @acronym{GNU} extensions, extended regular expressions
+Use extended regular expressions rather than basic
+regular expressions.  Extended regexps are those that
+@command{egrep} accepts; they can be clearer because they
+usually have less backslashes, but are a @acronym{GNU} extension
+and hence scripts that use them are not portable.
+@xref{Extended regexps, , Extended regular expressions}.
+
+@ifset PERL
+@item -R
+@itemx --regexp-perl
+@opindex -R
+@opindex --regexp-perl
+@cindex Perl-style regular expressions, choosing
+@cindex @value{SSEDEXT}, Perl-style regular expressions
+Use Perl-style regular expressions rather than basic
+regular expressions.  Perl-style regexps are extremely
+powerful but are a @value{SSED} extension and hence scripts that
+use it are not portable.  @xref{Perl regexps, ,
+Perl-style regular expressions}.
+@end ifset
+
+@item -s
+@itemx --separate
+@cindex Working on separate files
+By default, @command{sed} will consider the files specified on the
+command line as a single continuous long stream.  This @value{SSED}
+extension allows the user to consider them as separate files:
+range addresses (such as @samp{/abc/,/def/}) are not allowed
+to span several files, line numbers are relative to the start
+of each file, @code{$} refers to the last line of each file,
+and files invoked from the @code{R} commands are rewound at the
+start of each file.
+
+@item -u
+@itemx --unbuffered
+@opindex -u
+@opindex --unbuffered
+@cindex Unbuffered I/O, choosing
+Buffer both input and output as minimally as practical.
+(This is particularly useful if the input is coming from
+the likes of @samp{tail -f}, and you wish to see the transformed
+output as soon as possible.)
+
+@item -e @var{script}
+@itemx --expression=@var{script}
+@opindex -e
+@opindex --expression
+@cindex Script, from command line
+Add the commands in @var{script} to the set of commands to be
+run while processing the input.
+
+@item -f @var{script-file}
+@itemx --file=@var{script-file}
+@opindex -f
+@opindex --file
+@cindex Script, from a file
+Add the commands contained in the file @var{script-file}
+to the set of commands to be run while processing the input.
+
+@end table
+
+If no @option{-e}, @option{-f}, @option{--expression}, or @option{--file}
+options are given on the command-line,
+then the first non-option argument on the command line is
+taken to be the @var{script} to be executed.
+
+@cindex Files to be processed as input
+If any command-line parameters remain after processing the above,
+these parameters are interpreted as the names of input files to
+be processed.
+@cindex Standard input, processing as input
+A file name of @samp{-} refers to the standard input stream.
+The standard input will be processed if no file names are specified.
+
+
+@node sed Programs
+@chapter @command{sed} Programs
+
+@cindex @command{sed} program structure
+@cindex Script structure
+A @command{sed} program consists of one or more @command{sed} commands,
+passed in by one or more of the
+@option{-e}, @option{-f}, @option{--expression}, and @option{--file}
+options, or the first non-option argument if zero of these
+options are used.
+This document will refer to ``the'' @command{sed} script;
+this is understood to mean the in-order catenation
+of all of the @var{script}s and @var{script-file}s passed in.
+
+Each @code{sed} command consists of an optional address or
+address range, followed by a one-character command name
+and any additional command-specific code.
+
+@menu
+* Execution Cycle::          How @command{sed} works
+* Addresses::                Selecting lines with @command{sed}
+* Regular Expressions::      Overview of regular expression syntax
+* Common Commands::          Often used commands
+* The "s" Command::          @command{sed}'s Swiss Army Knife
+* Other Commands::           Less frequently used commands
+* Programming Commands::     Commands for @command{sed} gurus
+* Extended Commands::        Commands specific of @value{SSED}
+* Escapes::                  Specifying special characters
+@end menu
+
+
+@node Execution Cycle
+@section How @command{sed} Works
+
+@cindex Buffer spaces, pattern and hold
+@cindex Spaces, pattern and hold
+@cindex Pattern space, definition
+@cindex Hold space, definition
+@command{sed} maintains two data buffers: the active @emph{pattern} space,
+and the auxiliary @emph{hold} space. Both are initially empty.
+
+@command{sed} operates by performing the following cycle on each
+lines of input: first, @command{sed} reads one line from the input
+stream, removes any trailing newline, and places it in the pattern space.
+Then commands are executed; each command can have an address associated
+to it: addresses are a kind of condition code, and a command is only
+executed if the condition is verified before the command is to be
+executed.
+
+When the end of the script is reached, unless the @option{-n} option
+is in use, the contents of pattern space are printed out to the output
+stream, adding back the trailing newline if it was removed.@footnote{Actually,
+  if @command{sed} prints a line without the terminating newline, it will
+  nevertheless print the missing newline as soon as more text is sent to
+  the same output stream, which gives the ``least expected surprise''
+  even though it does not make commands like @samp{sed -n p} exactly
+  identical to @command{cat}.} Then the next cycle starts for the next
+input line.
+
+Unless special commands (like @samp{D}) are used, the pattern space is
+deleted between two cycles. The hold space, on the other hand, keeps
+its data between cycles (see commands @samp{h}, @samp{H}, @samp{x},
+@samp{g}, @samp{G} to move data between both buffers).
+
+
+@node Addresses
+@section Selecting lines with @command{sed}
+@cindex Addresses, in @command{sed} scripts
+@cindex Line selection
+@cindex Selecting lines to process
+
+Addresses in a @command{sed} script can be in any of the following forms:
+@table @code
+@item @var{number}
+@cindex Address, numeric
+@cindex Line, selecting by number
+Specifying a line number will match only that line in the input.
+(Note that @command{sed} counts lines continuously across all input files
+unless @option{-i} or @option{-s} options are specified.)
+
+@item @var{first}~@var{step}
+@cindex @acronym{GNU} extensions, @samp{@var{n}~@var{m}} addresses
+This @acronym{GNU} extension matches every @var{step}th line
+starting with line @var{first}.
+In particular, lines will be selected when there exists
+a non-negative @var{n} such that the current line-number equals
+@var{first} + (@var{n} * @var{step}).
+Thus, to select the odd-numbered lines,
+one would use @code{1~2};
+to pick every third line starting with the second, @samp{2~3} would be used;
+to pick every fifth line starting with the tenth, use @samp{10~5};
+and @samp{50~0} is just an obscure way of saying @code{50}.
+
+@item $
+@cindex Address, last line
+@cindex Last line, selecting
+@cindex Line, selecting last
+This address matches the last line of the last file of input, or
+the last line of each file when the @option{-i} or @option{-s} options
+are specified.
+
+@item /@var{regexp}/
+@cindex Address, as a regular expression
+@cindex Line, selecting by regular expression match
+This will select any line which matches the regular expression @var{regexp}.
+If @var{regexp} itself includes any @code{/} characters,
+each must be escaped by a backslash (@code{\}).
+
+@cindex empty regular expression
+@cindex @value{SSEDEXT}, modifiers and the empty regular expression
+The empty regular expression @samp{//} repeats the last regular
+expression match (the same holds if the empty regular expression is
+passed to the @code{s} command).  Note that modifiers to regular expressions
+are evaluated when the regular expression is compiled, thus it is invalid to
+specify them together with the empty regular expression.
+
+@item \%@var{regexp}%
+(The @code{%} may be replaced by any other single character.)
+
+@cindex Slash character, in regular expressions
+This also matches the regular expression @var{regexp},
+but allows one to use a different delimiter than @code{/}.
+This is particularly useful if the @var{regexp} itself contains
+a lot of slashes, since it avoids the tedious escaping of every @code{/}.
+If @var{regexp} itself includes any delimiter characters,
+each must be escaped by a backslash (@code{\}).
+
+@item /@var{regexp}/I
+@itemx \%@var{regexp}%I
+@cindex @acronym{GNU} extensions, @code{I} modifier
+@ifset PERL
+@cindex Perl-style regular expressions, case-insensitive
+@end ifset
+The @code{I} modifier to regular-expression matching is a @acronym{GNU}
+extension which causes the @var{regexp} to be matched in
+a case-insensitive manner.
+
+@item /@var{regexp}/M
+@itemx \%@var{regexp}%M
+@ifset PERL
+@cindex @value{SSEDEXT}, @code{M} modifier
+@end ifset
+@cindex Perl-style regular expressions, multiline
+The @code{M} modifier to regular-expression matching is a @value{SSED}
+extension which causes @code{^} and @code{$} to match respectively
+(in addition to the normal behavior) the empty string after a newline,
+and the empty string before a newline.  There are special character
+sequences
+@ifset PERL
+(@code{\A} and @code{\Z} in Perl mode, @code{\`} and @code{\'}
+in basic or extended regular expression modes)
+@end ifset
+@ifclear PERL
+(@code{\`} and @code{\'})
+@end ifclear
+which always match the beginning or the end of the buffer.
+@code{M} stands for @cite{multi-line}.
+
+@ifset PERL
+@item /@var{regexp}/S
+@itemx \%@var{regexp}%S
+@cindex @value{SSEDEXT}, @code{S} modifier
+@cindex Perl-style regular expressions, single line
+The @code{S} modifier to regular-expression matching is only valid
+in Perl mode and specifies that the dot character (@code{.}) will
+match the newline character too.  @code{S} stands for @cite{single-line}.
+@end ifset
+
+@ifset PERL
+@item /@var{regexp}/X
+@itemx \%@var{regexp}%X
+@cindex @value{SSEDEXT}, @code{X} modifier
+@cindex Perl-style regular expressions, extended
+The @code{X} modifier to regular-expression matching is also
+valid in Perl mode only.  If it is used, whitespace in the
+pattern (other than in a character class) and
+characters between a @kbd{#} outside a character class and the
+next newline character are ignored. An escaping backslash
+can be used to include a whitespace or @kbd{#} character as part
+of the pattern.
+@end ifset
+@end table
+
+If no addresses are given, then all lines are matched;
+if one address is given, then only lines matching that
+address are matched.
+
+@cindex Range of lines
+@cindex Several lines, selecting
+An address range can be specified by specifying two addresses
+separated by a comma (@code{,}).  An address range matches lines
+starting from where the first address matches, and continues
+until the second address matches (inclusively).
+
+If the second address is a @var{regexp}, then checking for the
+ending match will start with the line @emph{following} the
+line which matched the first address: a range will always
+span at least two lines (except of course if the input stream
+ends).
+
+If the second address is a @var{number} less than (or equal to)
+the line matching the first address, then only the one line is
+matched.
+
+@cindex Special addressing forms
+@cindex Range with start address of zero
+@cindex Zero, as range start address
+@cindex @var{addr1},+N
+@cindex @var{addr1},~N
+@cindex @acronym{GNU} extensions, special two-address forms
+@cindex @acronym{GNU} extensions, @code{0} address
+@cindex @acronym{GNU} extensions, 0,@var{addr2} addressing
+@cindex @acronym{GNU} extensions, @var{addr1},+@var{N} addressing
+@cindex @acronym{GNU} extensions, @var{addr1},~@var{N} addressing
+@value{SSED} also supports some special two-address forms; all these
+are @acronym{GNU} extensions:
+@table @code
+@item 0,/@var{regexp}/
+A line number of @code{0} can be used in an address specification like
+@code{0,/@var{regexp}/} so that @command{sed} will try to match
+@var{regexp} in the first input line too.  In other words,
+@code{0,/@var{regexp}/} is similar to @code{1,/@var{regexp}/},
+except that if @var{addr2} matches the very first line of input the
+@code{0,/@var{regexp}/} form will consider it to end the range, whereas
+the @code{1,/@var{regexp}/} form will match the beginning of its range and
+hence make the range span up to the @emph{second} occurrence of the
+regular expression.
+
+Note that this is the only place where the @code{0} address makes
+sense; there is no 0-th line and commands which are given the @code{0}
+address in any other way will give an error.
+
+@item @var{addr1},+@var{N}
+Matches @var{addr1} and the @var{N} lines following @var{addr1}.
+
+@item @var{addr1},~@var{N}
+Matches @var{addr1} and the lines following @var{addr1}
+until the next line whose input line number is a multiple of @var{N}.
+@end table
+
+@cindex Excluding lines
+@cindex Selecting non-matching lines
+Appending the @code{!} character to the end of an address
+specification negates the sense of the match.
+That is, if the @code{!} character follows an address range,
+then only lines which do @emph{not} match the address range
+will be selected.
+This also works for singleton addresses,
+and, perhaps perversely, for the null address.
+
+
+@node Regular Expressions
+@section Overview of Regular Expression Syntax
+
+To know how to use @command{sed}, people should understand regular
+expressions (@dfn{regexp} for short).  A regular expression
+is a pattern that is matched against a
+subject string from left to right.  Most characters are
+@dfn{ordinary}: they stand for
+themselves in a pattern, and match the corresponding characters
+in the subject.  As a trivial example, the pattern
+
+@example
+     The quick brown fox
+@end example
+
+@noindent
+matches a portion of a subject string that is identical to
+itself.  The power of regular expressions comes from the
+ability to include alternatives and repetitions in the pattern.
+These are encoded in the pattern by the use of @dfn{special characters},
+which do not stand for themselves but instead
+are interpreted in some special way.  Here is a brief description
+of regular expression syntax as used in @command{sed}.
+
+@table @code
+@item @var{char}
+A single ordinary character matches itself.
+
+@item *
+@cindex @acronym{GNU} extensions, to basic regular expressions
+Matches a sequence of zero or more instances of matches for the
+preceding regular expression, which must be an ordinary character, a
+special character preceded by @code{\}, a @code{.}, a grouped regexp
+(see below), or a bracket expression.  As a @acronym{GNU} extension, a
+postfixed regular expression can also be followed by @code{*}; for
+example, @code{a**} is equivalent to @code{a*}.  @acronym{POSIX}
+1003.1-2001 says that @code{*} stands for itself when it appears at
+the start of a regular expression or subexpression, but many
+non@acronym{GNU} implementations do not support this and portable
+scripts should instead use @code{\*} in these contexts.
+
+@item \+
+@cindex @acronym{GNU} extensions, to basic regular expressions
+As @code{*}, but matches one or more.  It is a @acronym{GNU} extension.
+
+@item \?
+@cindex @acronym{GNU} extensions, to basic regular expressions
+As @code{*}, but only matches zero or one.  It is a @acronym{GNU} extension.
+
+@item \@{@var{i}\@}
+As @code{*}, but matches exactly @var{i} sequences (@var{i} is a
+decimal integer; for portability, keep it between 0 and 255
+inclusive).
+
+@item \@{@var{i},@var{j}\@}
+Matches between @var{i} and @var{j}, inclusive, sequences.
+
+@item \@{@var{i},\@}
+Matches more than or equal to @var{i} sequences.
+
+@item \(@var{regexp}\)
+Groups the inner @var{regexp} as a whole, this is used to: 
+
+@itemize @bullet
+@item
+@cindex @acronym{GNU} extensions, to basic regular expressions
+Apply postfix operators, like @code{\(abcd\)*}:
+this will search for zero or more whole sequences 
+of @samp{abcd}, while @code{abcd*} would search
+for @samp{abc} followed by zero or more occurrences
+of @samp{d}.  Note that support for @code{\(abcd\)*} is
+required by @acronym{POSIX} 1003.1-2001, but many non-@acronym{GNU}
+implementations do not support it and hence it is not universally
+portable.         
+
+@item
+Use back references (see below).
+@end itemize
+
+@item .
+Matches any character, including newline.
+
+@item ^
+Matches the null string at beginning of line, i.e. what
+appears after the circumflex must appear at the 
+beginning of line. @code{^#include} will match only 
+lines where @samp{#include} is the first thing on line---if
+there are spaces before, for example, the match fails.
+@code{^} acts as a special character only at the beginning
+of the regular expression or subexpression (that is,
+after @code{\(} or @code{\|}).  Portable scripts should avoid
+@code{^} at the beginning of a subexpression, though, as
+@acronym{POSIX} allows implementations that treat @code{^} as
+an ordinary character in that context.
+
+
+@item $
+It is the same as @code{^}, but refers to end of line.
+@code{$} also acts as a special character only at the end
+of the regular expression or subexpression (that is, before @code{\)}
+or @code{\|}), and its use at the end of a subexpression is not
+portable.
+
+
+@item [@var{list}]
+@itemx [^@var{list}]
+Matches any single character in @var{list}: for example,
+@code{[aeiou]} matches all vowels.  A list may include
+sequences like @code{@var{char1}-@var{char2}}, which
+matches any character between (inclusive) @var{char1}
+and @var{char2}.
+
+A leading @code{^} reverses the meaning of @var{list}, so that
+it matches any single character @emph{not} in @var{list}.  To include
+@code{]} in the list, make it the first character (after
+the @code{^} if needed), to include @code{-} in the list,
+make it the first or last; to include @code{^} put
+it after the first character.
+
+@cindex @code{POSIXLY_CORRECT} behavior, bracket expressions
+The characters @code{$}, @code{*}, @code{.}, @code{[}, and @code{\}
+are normally not special within @var{list}.  For example, @code{[\*]}
+matches either @samp{\} or @samp{*}, because the @code{\} is not
+special here.  However, strings like @code{[.ch.]}, @code{[=a=]}, and
+@code{[:space:]} are special within @var{list} and represent collating
+symbols, equivalence classes, and character classes, respectively, and
+@code{[} is therefore special within @var{list} when it is followed by
+@code{.}, @code{=}, or @code{:}.  Also, when not in
+@env{POSIXLY_CORRECT} mode, special escapes like @code{\n} and
+@code{\t} are recognized within @var{list}.  @xref{Escapes}.
+
+@item @var{regexp1}\|@var{regexp2}
+@cindex @acronym{GNU} extensions, to basic regular expressions
+Matches either @var{regexp1} or @var{regexp2}.  Use
+parentheses to use complex alternative regular expressions.
+The matching process tries each alternative in turn, from
+left to right, and the first one that succeeds is used.
+It is a @acronym{GNU} extension.
+
+@item @var{regexp1}@var{regexp2}
+Matches the concatenation of @var{regexp1} and @var{regexp2}.
+Concatenation binds more tightly than @code{\|}, @code{^}, and
+@code{$}, but less tightly than the other regular expression
+operators.
+
+@item \@var{digit}
+Matches the @var{digit}-th @code{\(@dots{}\)} parenthesized
+subexpression in the regular expression.  This is called a @dfn{back
+reference}.  Subexpressions are implicity numbered by counting
+occurrences of @code{\(} left-to-right.
+
+@item \n
+Matches the newline character.
+
+@item \@var{char}
+Matches @var{char}, where @var{char} is one of @code{$},
+@code{*}, @code{.}, @code{[}, @code{\}, or @code{^}.
+Note that the only C-like
+backslash sequences that you can portably assume to be
+interpreted are @code{\n} and @code{\\}; in particular
+@code{\t} is not portable, and matches a @samp{t} under most
+implementations of @command{sed}, rather than a tab character.
+
+@end table
+
+@cindex Greedy regular expression matching
+Note that the regular expression matcher is greedy, i.e., matches
+are attempted from left to right and, if two or more matches are
+possible starting at the same character, it selects the longest.
+
+@noindent
+Examples:
+@table @samp
+@item abcdef
+Matches @samp{abcdef}.
+
+@item a*b
+Matches zero or more @samp{a}s followed by a single
+@samp{b}.  For example, @samp{b} or @samp{aaaaab}. 
+
+@item a\?b
+Matches @samp{b} or @samp{ab}.
+
+@item a\+b\+
+Matches one or more @samp{a}s followed by one or more
+@samp{b}s: @samp{ab} is the shortest possible match, but
+other examples are @samp{aaaab} or @samp{abbbbb} or
+@samp{aaaaaabbbbbbb}.
+
+@item .*
+@itemx .\+
+These two both match all the characters in a string;
+however, the first matches every string (including the empty
+string), while the second matches only strings containing
+at least one character.
+
+@item ^main.*(.*)
+his matches a string starting with @samp{main},
+followed by an opening and closing
+parenthesis.  The @samp{n}, @samp{(} and @samp{)} need not
+be adjacent.
+
+@item ^#
+This matches a string beginning with @samp{#}.
+
+@item \\$
+This matches a string ending with a single backslash.  The
+regexp contains two backslashes for escaping.
+
+@item \$
+Instead, this matches a string consisting of a single dollar sign,
+because it is escaped.
+
+@item [a-zA-Z0-9]
+In the C locale, this matches any @acronym{ASCII} letters or digits.
+
+@item [^ @kbd{tab}]\+
+(Here @kbd{tab} stands for a single tab character.)
+This matches a string of one or more
+characters, none of which is a space or a tab.
+Usually this means a word.
+
+@item ^\(.*\)\n\1$
+This matches a string consisting of two equal substrings separated by
+a newline.
+
+@item .\@{9\@}A$
+This matches nine characters followed by an @samp{A}.
+
+@item ^.\@{15\@}A
+This matches the start of a string that contains 16 characters,
+the last of which is an @samp{A}.
+
+@end table
+
+
+
+@node Common Commands
+@section Often-Used Commands
+
+If you use @command{sed} at all, you will quite likely want to know
+these commands.
+
+@table @code
+@item #
+[No addresses allowed.]
+
+@findex # (comments)
+@cindex Comments, in scripts
+The @code{#} character begins a comment;
+the comment continues until the next newline.
+
+@cindex Portability, comments
+If you are concerned about portability, be aware that
+some implementations of @command{sed} (which are not @sc{posix}
+conformant) may only support a single one-line comment,
+and then only when the very first character of the script is a @code{#}.
+
+@findex -n, forcing from within a script
+@cindex Caveat --- #n on first line
+Warning: if the first two characters of the @command{sed} script
+are @code{#n}, then the @option{-n} (no-autoprint) option is forced.
+If you want to put a comment in the first line of your script
+and that comment begins with the letter @samp{n}
+and you do not want this behavior,
+then be sure to either use a capital @samp{N},
+or place at least one space before the @samp{n}.
+
+@item q [@var{exit-code}]
+This command only accepts a single address.
+
+@findex q (quit) command
+@cindex @value{SSEDEXT}, returning an exit code
+@cindex Quitting
+Exit @command{sed} without processing any more commands or input.
+Note that the current pattern space is printed if auto-print is
+not disabled with the @option{-n} options.  The ability to return
+an exit code from the @command{sed} script is a @value{SSED} extension.
+
+@item d
+@findex d (delete) command
+@cindex Text, deleting
+Delete the pattern space;
+immediately start next cycle.
+
+@item p
+@findex p (print) command
+@cindex Text, printing
+Print out the pattern space (to the standard output).
+This command is usually only used in conjunction with the @option{-n}
+command-line option.
+
+@item n
+@findex n (next-line) command
+@cindex Next input line, replace pattern space with
+@cindex Read next input line
+If auto-print is not disabled, print the pattern space,
+then, regardless, replace the pattern space with the next line of input.
+If there is no more input then @command{sed} exits without processing
+any more commands.
+
+@item @{ @var{commands} @}
+@findex @{@} command grouping
+@cindex Grouping commands
+@cindex Command groups
+A group of commands may be enclosed between
+@code{@{} and @code{@}} characters.
+This is particularly useful when you want a group of commands
+to be triggered by a single address (or address-range) match.
+
+@end table
+
+@node The "s" Command
+@section The @code{s} Command
+
+The syntax of the @code{s} (as in substitute) command is
+@samp{s/@var{regexp}/@var{replacement}/@var{flags}}.  The @code{/}
+characters may be uniformly replaced by any other single
+character within any given @code{s} command.  The @code{/}
+character (or whatever other character is used in its stead)
+can appear in the @var{regexp} or @var{replacement}
+only if it is preceded by a @code{\} character.
+
+The @code{s} command is probably the most important in @command{sed}
+and has a lot of different options.  Its basic concept is simple:
+the @code{s} command attempts to match the pattern
+space against the supplied @var{regexp}; if the match is
+successful, then that portion of the pattern
+space which was matched is replaced with @var{replacement}.
+
+@cindex Backreferences, in regular expressions
+@cindex Parenthesized substrings
+The @var{replacement} can contain @code{\@var{n}} (@var{n} being
+a number from 1 to 9, inclusive) references, which refer to
+the portion of the match which is contained between the @var{n}th
+@code{\(} and its matching @code{\)}.
+Also, the @var{replacement} can contain unescaped @code{&}
+characters which reference the whole matched portion
+of the pattern space.
+@cindex @value{SSEDEXT}, case modifiers in @code{s} commands
+Finally, as a @value{SSED} extension, you can include a
+special sequence made of a backslash and one of the letters
+@code{L}, @code{l}, @code{U}, @code{u}, or @code{E}.
+The meaning is as follows:
+
+@table @code
+@item \L
+Turn the replacement
+to lowercase until a @code{\U} or @code{\E} is found,
+
+@item \l
+Turn the
+next character to lowercase,
+
+@item \U
+Turn the replacement to uppercase
+until a @code{\L} or @code{\E} is found,
+
+@item \u
+Turn the next character
+to uppercase,
+
+@item \E
+Stop case conversion started by @code{\L} or @code{\U}.
+@end table
+
+To include a literal @code{\}, @code{&}, or newline in the final
+replacement, be sure to precede the desired @code{\}, @code{&},
+or newline in the @var{replacement} with a @code{\}.
+
+@findex s command, option flags
+@cindex Substitution of text, options
+The @code{s} command can be followed by zero or more of the
+following @var{flags}:
+
+@table @code
+@item g
+@cindex Global substitution
+@cindex Replacing all text matching regexp in a line
+Apply the replacement to @emph{all} matches to the @var{regexp},
+not just the first.
+
+@item @var{number}
+@cindex Replacing only @var{n}th match of regexp in a line
+Only replace the @var{number}th match of the @var{regexp}.
+
+@cindex @acronym{GNU} extensions, @code{g} and @var{number} modifier interaction in @code{s} command
+@cindex Mixing @code{g} and @var{number} modifiers in the @code{s} command
+Note: the @sc{posix} standard does not specify what should happen
+when you mix the @code{g} and @var{number} modifiers,
+and currently there is no widely agreed upon meaning
+across @command{sed} implementations.
+For @value{SSED}, the interaction is defined to be:
+ignore matches before the @var{number}th,
+and then match and replace all matches from
+the @var{number}th on.
+
+@item p
+@cindex Text, printing after substitution
+If the substitution was made, then print the new pattern space.
+
+Note: when both the @code{p} and @code{e} options are specified,
+the relative ordering of the two produces very different results.
+In general, @code{ep} (evaluate then print) is what you want,
+but operating the other way round can be useful for debugging.
+For this reason, the current version of @value{SSED} interprets
+specially the presence of @code{p} options both before and after
+@code{e}, printing the pattern space before and after evaluation,
+while in general flags for the @code{s} command show their
+effect just once.  This behavior, although documented, might
+change in future versions.
+
+@item w @var{file-name}
+@cindex Text, writing to a file after substitution
+@cindex @value{SSEDEXT}, @file{/dev/stdout} file
+@cindex @value{SSEDEXT}, @file{/dev/stderr} file
+If the substitution was made, then write out the result to the named file.
+As a @value{SSED} extension, two special values of @var{file-name} are
+supported: @file{/dev/stderr}, which writes the result to the standard
+error, and @file{/dev/stdout}, which writes to the standard
+output.@footnote{This is equivalent to @code{p} unless the @option{-i}
+option is being used.}
+
+@item e
+@cindex Evaluate Bourne-shell commands, after substitution
+@cindex Subprocesses
+@cindex @value{SSEDEXT}, evaluating Bourne-shell commands
+@cindex @value{SSEDEXT}, subprocesses
+This command allows one to pipe input from a shell command
+into pattern space.  If a substitution was made, the command
+that is found in pattern space is executed and pattern space
+is replaced with its output.  A trailing newline is suppressed;
+results are undefined if the command to be executed contains
+a @sc{nul} character.  This is a @value{SSED} extension.
+
+@item I
+@itemx i
+@cindex @acronym{GNU} extensions, @code{I} modifier
+@cindex Case-insensitive matching
+@ifset PERL
+@cindex Perl-style regular expressions, case-insensitive
+@end ifset
+The @code{I} modifier to regular-expression matching is a @acronym{GNU}
+extension which makes @command{sed} match @var{regexp} in a
+case-insensitive manner.
+
+@item M
+@itemx m
+@cindex @value{SSEDEXT}, @code{M} modifier
+@ifset PERL
+@cindex Perl-style regular expressions, multiline
+@end ifset
+The @code{M} modifier to regular-expression matching is a @value{SSED}
+extension which causes @code{^} and @code{$} to match respectively
+(in addition to the normal behavior) the empty string after a newline,
+and the empty string before a newline.  There are special character
+sequences
+@ifset PERL
+(@code{\A} and @code{\Z} in Perl mode, @code{\`} and @code{\'}
+in basic or extended regular expression modes)
+@end ifset
+@ifclear PERL
+(@code{\`} and @code{\'})
+@end ifclear
+which always match the beginning or the end of the buffer.
+@code{M} stands for @cite{multi-line}.
+
+@ifset PERL
+@item S
+@itemx s
+@cindex @value{SSEDEXT}, @code{S} modifier
+@cindex Perl-style regular expressions, single line
+The @code{S} modifier to regular-expression matching is only valid
+in Perl mode and specifies that the dot character (@code{.}) will
+match the newline character too.  @code{S} stands for @cite{single-line}.
+@end ifset
+
+@ifset PERL
+@item X
+@itemx x
+@cindex @value{SSEDEXT}, @code{X} modifier
+@cindex Perl-style regular expressions, extended
+The @code{X} modifier to regular-expression matching is also
+valid in Perl mode only.  If it is used, whitespace in the
+pattern (other than in a character class) and
+characters between a @kbd{#} outside a character class and the
+next newline character are ignored. An escaping backslash
+can be used to include a whitespace or @kbd{#} character as part
+of the pattern.
+@end ifset
+@end table
+
+
+@node Other Commands
+@section Less Frequently-Used Commands
+
+Though perhaps less frequently used than those in the previous
+section, some very small yet useful @command{sed} scripts can be built with
+these commands.
+
+@table @code
+@item y/@var{source-chars}/@var{dest-chars}/
+(The @code{/} characters may be uniformly replaced by
+any other single character within any given @code{y} command.)
+
+@findex y (transliterate) command
+@cindex Transliteration
+Transliterate any characters in the pattern space which match
+any of the @var{source-chars} with the corresponding character
+in @var{dest-chars}.
+
+Instances of the @code{/} (or whatever other character is used in its stead),
+@code{\}, or newlines can appear in the @var{source-chars} or @var{dest-chars}
+lists, provide that each instance is escaped by a @code{\}.
+The @var{source-chars} and @var{dest-chars} lists @emph{must}
+contain the same number of characters (after de-escaping).
+
+@item a\
+@itemx @var{text}
+@cindex @value{SSEDEXT}, two addresses supported by most commands
+As a @acronym{GNU} extension, this command accepts two addresses.
+
+@findex a (append text lines) command
+@cindex Appending text after a line
+@cindex Text, appending
+Queue the lines of text which follow this command
+(each but the last ending with a @code{\},
+which are removed from the output)
+to be output at the end of the current cycle,
+or when the next input line is read.
+
+Escape sequences in @var{text} are processed, so you should
+use @code{\\} in @var{text} to print a single backslash.
+
+As a @acronym{GNU} extension, if between the @code{a} and the newline there is
+other than a whitespace-@code{\} sequence, then the text of this line,
+starting at the first non-whitespace character after the @code{a},
+is taken as the first line of the @var{text} block.
+(This enables a simplification in scripting a one-line add.)
+This extension also works with the @code{i} and @code{c} commands.
+
+@item i\
+@itemx @var{text}
+@cindex @value{SSEDEXT}, two addresses supported by most commands
+As a @acronym{GNU} extension, this command accepts two addresses.
+
+@findex i (insert text lines) command
+@cindex Inserting text before a line
+@cindex Text, insertion
+Immediately output the lines of text which follow this command
+(each but the last ending with a @code{\},
+which are removed from the output).
+
+@item c\
+@itemx @var{text}
+@findex c (change to text lines) command
+@cindex Replacing selected lines with other text
+Delete the lines matching the address or address-range,
+and output the lines of text which follow this command
+(each but the last ending with a @code{\},
+which are removed from the output)
+in place of the last line
+(or in place of each line, if no addresses were specified).
+A new cycle is started after this command is done,
+since the pattern space will have been deleted.
+
+@item =
+@cindex @value{SSEDEXT}, two addresses supported by most commands
+As a @acronym{GNU} extension, this command accepts two addresses.
+
+@findex = (print line number) command
+@cindex Printing line number
+@cindex Line number, printing
+Print out the current input line number (with a trailing newline).
+
+@item l @var{n}
+@findex l (list unambiguously) command
+@cindex List pattern space
+@cindex Printing text unambiguously
+@cindex Line length, setting
+@cindex @value{SSEDEXT}, setting line length
+Print the pattern space in an unambiguous form:
+non-printable characters (and the @code{\} character)
+are printed in C-style escaped form; long lines are split,
+with a trailing @code{\} character to indicate the split;
+the end of each line is marked with a @code{$}.
+
+@var{n} specifies the desired line-wrap length;
+a length of 0 (zero) means to never wrap long lines.  If omitted,
+the default as specified on the command line is used.  The @var{n}
+parameter is a @value{SSED} extension.
+
+@item r @var{filename}
+@cindex @value{SSEDEXT}, two addresses supported by most commands
+As a @acronym{GNU} extension, this command accepts two addresses.
+
+@findex r (read file) command
+@cindex Read text from a file
+@cindex @value{SSEDEXT}, @file{/dev/stdin} file
+Queue the contents of @var{filename} to be read and
+inserted into the output stream at the end of the current cycle,
+or when the next input line is read.
+Note that if @var{filename} cannot be read, it is treated as
+if it were an empty file, without any error indication.
+
+As a @value{SSED} extension, the special value @file{/dev/stdin}
+is supported for the file name, which reads the contents of the
+standard input.
+
+@item w @var{filename}
+@findex w (write file) command
+@cindex Write to a file
+@cindex @value{SSEDEXT}, @file{/dev/stdout} file
+@cindex @value{SSEDEXT}, @file{/dev/stderr} file
+Write the pattern space to @var{filename}.
+As a @value{SSED} extension, two special values of @var{file-name} are
+supported: @file{/dev/stderr}, which writes the result to the standard
+error, and @file{/dev/stdout}, which writes to the standard
+output.@footnote{This is equivalent to @code{p} unless the @option{-i}
+option is being used.}
+
+The file will be created (or truncated) before the
+first input line is read; all @code{w} commands
+(including instances of @code{w} flag on successful @code{s} commands)
+which refer to the same @var{filename} are output without
+closing and reopening the file.
+
+@item D
+@findex D (delete first line) command
+@cindex Delete first line from pattern space
+Delete text in the pattern space up to the first newline.
+If any text is left, restart cycle with the resultant
+pattern space (without reading a new line of input),
+otherwise start a normal new cycle.
+
+@item N
+@findex N (append Next line) command
+@cindex Next input line, append to pattern space
+@cindex Append next input line to pattern space
+Add a newline to the pattern space,
+then append the next line of input to the pattern space.
+If there is no more input then @command{sed} exits without processing
+any more commands.
+
+@item P
+@findex P (print first line) command
+@cindex Print first line from pattern space
+Print out the portion of the pattern space up to the first newline.
+
+@item h
+@findex h (hold) command
+@cindex Copy pattern space into hold space
+@cindex Replace hold space with copy of pattern space
+@cindex Hold space, copying pattern space into
+Replace the contents of the hold space with the contents of the pattern space.
+
+@item H
+@findex H (append Hold) command
+@cindex Append pattern space to hold space
+@cindex Hold space, appending from pattern space
+Append a newline to the contents of the hold space,
+and then append the contents of the pattern space to that of the hold space.
+
+@item g
+@findex g (get) command
+@cindex Copy hold space into pattern space
+@cindex Replace pattern space with copy of hold space
+@cindex Hold space, copy into pattern space
+Replace the contents of the pattern space with the contents of the hold space.
+
+@item G
+@findex G (appending Get) command
+@cindex Append hold space to pattern space
+@cindex Hold space, appending to pattern space
+Append a newline to the contents of the pattern space,
+and then append the contents of the hold space to that of the pattern space.
+
+@item x
+@findex x (eXchange) command
+@cindex Exchange hold space with pattern space
+@cindex Hold space, exchange with pattern space
+Exchange the contents of the hold and pattern spaces.
+
+@end table
+
+
+@node Programming Commands
+@section Commands for @command{sed} gurus
+
+In most cases, use of these commands indicates that you are
+probably better off programming in something like @command{awk}
+or Perl.  But occasionally one is committed to sticking
+with @command{sed}, and these commands can enable one to write
+quite convoluted scripts.
+
+@cindex Flow of control in scripts
+@table @code
+@item : @var{label}
+[No addresses allowed.]
+
+@findex : (label) command
+@cindex Labels, in scripts
+Specify the location of @var{label} for branch commands.
+In all other respects, a no-op.
+
+@item b @var{label}
+@findex b (branch) command
+@cindex Branch to a label, unconditionally
+@cindex Goto, in scripts
+Unconditionally branch to @var{label}.
+The @var{label} may be omitted, in which case the next cycle is started.
+
+@item t @var{label}
+@findex t (test and branch if successful) command
+@cindex Branch to a label, if @code{s///} succeeded
+@cindex Conditional branch
+Branch to @var{label} only if there has been a successful @code{s}ubstitution
+since the last input line was read or conditional branch was taken.
+The @var{label} may be omitted, in which case the next cycle is started.
+
+@end table
+
+@node Extended Commands
+@section Commands Specific to @value{SSED}
+
+These commands are specific to @value{SSED}, so you
+must use them with care and only when you are sure that
+hindering portability is not evil.  They allow you to check
+for @value{SSED} extensions or to do tasks that are required
+quite often, yet are unsupported by standard @command{sed}s.
+
+@table @code
+@item e [@var{command}]
+@findex e (evaluate) command
+@cindex Evaluate Bourne-shell commands
+@cindex Subprocesses
+@cindex @value{SSEDEXT}, evaluating Bourne-shell commands
+@cindex @value{SSEDEXT}, subprocesses
+This command allows one to pipe input from a shell command
+into pattern space.  Without parameters, the @code{e} command
+executes the command that is found in pattern space and
+replaces the pattern space with the output; a trailing newline
+is suppressed.
+
+If a parameter is specified, instead, the @code{e} command
+interprets it as a command and sends its output to the output stream
+(like @code{r} does).  The command can run across multiple
+lines, all but the last ending with a back-slash.
+
+In both cases, the results are undefined if the command to be
+executed contains a @sc{nul} character.
+
+@item L @var{n}
+@findex L (fLow paragraphs) command
+@cindex Reformat pattern space
+@cindex Reformatting paragraphs
+@cindex @value{SSEDEXT}, reformatting paragraphs
+@cindex @value{SSEDEXT}, @code{L} command
+This @value{SSED} extension fills and joins lines in pattern space
+to produce output lines of (at most) @var{n} characters, like
+@code{fmt} does; if @var{n} is omitted, the default as specified
+on the command line is used.  This command is considered a failed
+experiment and unless there is enough request (which seems unlikely)
+will be removed in future versions.
+
+@ignore
+Blank lines, spaces between words, and indentation are
+preserved in the output; successive input lines with different
+indentation are not joined; tabs are expanded to 8 columns.
+
+If the pattern space contains multiple lines, they are joined, but
+since the pattern space usually contains a single line, the behavior
+of a simple @code{L;d} script is the same as @samp{fmt -s} (i.e.,
+it does not join short lines to form longer ones).
+
+@var{n} specifies the desired line-wrap length; if omitted,
+the default as specified on the command line is used.
+@end ignore
+
+@item Q [@var{exit-code}]
+This command only accepts a single address.
+
+@findex Q (silent Quit) command
+@cindex @value{SSEDEXT}, quitting silently
+@cindex @value{SSEDEXT}, returning an exit code
+@cindex Quitting
+This command is the same as @code{q}, but will not print the
+contents of pattern space.  Like @code{q}, it provides the
+ability to return an exit code to the caller.
+
+This command can be useful because the only alternative ways
+to accomplish this apparently trivial function are to use
+the @option{-n} option (which can unnecessarily complicate
+your script) or resorting to the following snippet, which
+wastes time by reading the whole file without any visible effect:
+
+@example
+:eat
+$d       @i{Quit silently on the last line}
+N        @i{Read another line, silently}
+g        @i{Overwrite pattern space each time to save memory}
+b eat
+@end example
+
+@item R @var{filename}
+@findex R (read line) command
+@cindex Read text from a file
+@cindex @value{SSEDEXT}, reading a file a line at a time
+@cindex @value{SSEDEXT}, @code{R} command
+@cindex @value{SSEDEXT}, @file{/dev/stdin} file
+Queue a line of @var{filename} to be read and
+inserted into the output stream at the end of the current cycle,
+or when the next input line is read.
+Note that if @var{filename} cannot be read, or if its end is
+reached, no line is appended, without any error indication.
+
+As with the @code{r} command, the special value @file{/dev/stdin}
+is supported for the file name, which reads a line from the
+standard input.
+
+@item T @var{label}
+@findex T (test and branch if failed) command
+@cindex @value{SSEDEXT}, branch if @code{s///} failed
+@cindex Branch to a label, if @code{s///} failed
+@cindex Conditional branch
+Branch to @var{label} only if there have been no successful
+@code{s}ubstitutions since the last input line was read or
+conditional branch was taken. The @var{label} may be omitted,
+in which case the next cycle is started.
+
+@item v @var{version}
+@findex v (version) command
+@cindex @value{SSEDEXT}, checking for their presence
+@cindex Requiring @value{SSED}
+This command does nothing, but makes @command{sed} fail if
+@value{SSED} extensions are not supported, simply because other
+versions of @command{sed} do not implement it.  In addition, you
+can specify the version of @command{sed} that your script
+requires, such as @code{4.0.5}.  The default is @code{4.0}
+because that is the first version that implemented this command.
+
+This command enables all @value{SSEDEXT} even if
+@env{POSIXLY_CORRECT} is set in the environment.
+
+@item W @var{filename}
+@findex W (write first line) command
+@cindex Write first line to a file
+@cindex @value{SSEDEXT}, writing first line to a file
+Write to the given filename the portion of the pattern space up to
+the first newline.  Everything said under the @code{w} command about
+file handling holds here too.
+@end table
+
+@node Escapes
+@section @acronym{GNU} Extensions for Escapes in Regular Expressions
+
+@cindex @acronym{GNU} extensions, special escapes
+Until this chapter, we have only encountered escapes of the form
+@samp{\^}, which tell @command{sed} not to interpret the circumflex
+as a special character, but rather to take it literally.  For
+example, @samp{\*} matches a single asterisk rather than zero
+or more backslashes.
+
+@cindex @code{POSIXLY_CORRECT} behavior, escapes
+This chapter introduces another kind of escape@footnote{All
+the escapes introduced here are @acronym{GNU}
+extensions, with the exception of @code{\n}.  In basic regular
+expression mode, setting @code{POSIXLY_CORRECT} disables them inside
+bracket expressions.}---that
+is, escapes that are applied to a character or sequence of characters
+that ordinarily are taken literally, and that @command{sed} replaces
+with a special character.  This provides a way
+of encoding non-printable characters in patterns in a visible manner.
+There is no restriction on the appearance of non-printing characters
+in a @command{sed} script but when a script is being prepared in the
+shell or by text editing, it is usually easier to use one of
+the following escape sequences than the binary character it
+represents:
+
+The list of these escapes is:
+
+@table @code
+@item \a
+Produces or matches a @sc{bel} character, that is an ``alert'' (@sc{ascii} 7).
+
+@item \f
+Produces or matches a form feed (@sc{ascii} 12).
+
+@item \n
+Produces or matches a newline (@sc{ascii} 10).
+
+@item \r
+Produces or matches a carriage return (@sc{ascii} 13).
+
+@item \t
+Produces or matches a horizontal tab (@sc{ascii} 9).
+
+@item \v
+Produces or matches a so called ``vertical tab'' (@sc{ascii} 11).
+
+@item \c@var{x}
+Produces or matches @kbd{@sc{Control}-@var{x}}, where @var{x} is
+any character.  The precise effect of @samp{\c@var{x}} is as follows:
+if @var{x} is a lower case letter, it is converted to upper case.
+Then bit 6 of the character (hex 40) is inverted.  Thus @samp{\cz} becomes
+hex 1A, but @samp{\c@{} becomes hex 3B, while @samp{\c;} becomes hex 7B.
+
+@item \d@var{xxx}
+Produces or matches a character whose decimal @sc{ascii} value is @var{xxx}.
+
+@item \o@var{xxx}
+@ifset PERL
+@item \@var{xxx}
+@end ifset
+Produces or matches a character whose octal @sc{ascii} value is @var{xxx}.
+@ifset PERL
+The syntax without the @code{o} is active in Perl mode, while the one
+with the @code{o} is active in the normal or extended @sc{posix} regular
+expression modes.
+@end ifset
+
+@item \x@var{xx}
+Produces or matches a character whose hexadecimal @sc{ascii} value is @var{xx}.
+@end table
+
+@samp{\b} (backspace) was omitted because of the conflict with
+the existing ``word boundary'' meaning.
+
+Other escapes match a particular character class and are valid only in
+regular expressions:
+
+@table @code
+@item \w
+Matches any ``word'' character.  A ``word'' character is any
+letter or digit or the underscore character.
+
+@item \W
+Matches any ``non-word'' character.
+
+@item \b
+Matches a word boundary; that is it matches if the character
+to the left is a ``word'' character and the character to the
+right is a ``non-word'' character, or vice-versa.
+
+@item \B
+Matches everywhere but on a word boundary; that is it matches
+if the character to the left and the character to the right
+are either both ``word'' characters or both ``non-word''
+characters.
+
+@item \`
+Matches only at the start of pattern space.  This is different
+from @code{^} in multi-line mode.
+
+@item \'
+Matches only at the end of pattern space.  This is different
+from @code{$} in multi-line mode.
+
+@ifset PERL
+@item \G
+Match only at the start of pattern space or, when doing a global
+substitution using the @code{s///g} command and option, at
+the end-of-match position of the prior match.  For example,
+@samp{s/\Ga/Z/g} will change an initial run of @code{a}s to
+a run of @code{Z}s
+@end ifset
+@end table
+
+@node Examples
+@chapter Some Sample Scripts
+
+Here are some @command{sed} scripts to guide you in the art of mastering
+@command{sed}.
+
+@menu
+Some exotic examples:
+* Centering lines::
+* Increment a number::
+* Rename files to lower case::
+* Print bash environment::
+* Reverse chars of lines::
+
+Emulating standard utilities:
+* tac::                             Reverse lines of files
+* cat -n::                          Numbering lines
+* cat -b::                          Numbering non-blank lines
+* wc -c::                           Counting chars
+* wc -w::                           Counting words
+* wc -l::                           Counting lines
+* head::                            Printing the first lines
+* tail::                            Printing the last lines
+* uniq::                            Make duplicate lines unique
+* uniq -d::                         Print duplicated lines of input
+* uniq -u::                         Remove all duplicated lines
+* cat -s::                          Squeezing blank lines
+@end menu
+
+@node Centering lines
+@section Centering Lines
+
+This script centers all lines of a file on a 80 columns width.
+To change that width, the number in @code{\@{@dots{}\@}} must be
+replaced, and the number of added spaces also must be changed.
+
+Note how the buffer commands are used to separate parts in
+the regular expressions to be matched---this is a common
+technique.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+# Put 80 spaces in the buffer
+1 @{
+  x
+  s/^$/          /
+  s/^.*$/&&&&&&&&/
+  x
+@}
+
+# del leading and trailing spaces
+y/@kbd{tab}/ /
+s/^ *//
+s/ *$//
+
+# add a newline and 80 spaces to end of line
+G
+
+# keep first 81 chars (80 + a newline)
+s/^\(.\@{81\@}\).*$/\1/
+
+# \2 matches half of the spaces, which are moved to the beginning
+s/^\(.*\)\n\(.*\)\2/\2\1/
+@end example
+@c end---------------------------------------------
+
+@node Increment a number
+@section Increment a Number
+
+This script is one of a few that demonstrate how to do arithmetic
+in @command{sed}.  This is indeed possible,@footnote{@command{sed} guru Greg
+Ubben wrote an implementation of the @command{dc} @sc{rpn} calculator!
+It is distributed together with sed.} but must be done manually.
+
+To increment one number you just add 1 to last digit, replacing
+it by the following digit.  There is one exception: when the digit
+is a nine the previous digits must be also incremented until you
+don't have a nine.
+
+This solution by Bruno Haible is very clever and smart because
+it uses a single buffer; if you don't have this limitation, the
+algorithm used in @ref{cat -n, Numbering lines}, is faster.
+It works by replacing trailing nines with an underscore, then
+using multiple @code{s} commands to increment the last digit,
+and then again substituting underscores with zeros.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+/[^0-9]/ d
+
+# replace all leading 9s by _ (any other character except digits, could
+# be used)
+:d
+s/9\(_*\)$/_\1/
+td
+
+# incr last digit only.  The first line adds a most-significant
+# digit of 1 if we have to add a digit.
+#
+# The @code{tn} commands are not necessary, but make the thing
+# faster
+
+s/^\(_*\)$/1\1/; tn
+s/8\(_*\)$/9\1/; tn
+s/7\(_*\)$/8\1/; tn
+s/6\(_*\)$/7\1/; tn
+s/5\(_*\)$/6\1/; tn
+s/4\(_*\)$/5\1/; tn
+s/3\(_*\)$/4\1/; tn
+s/2\(_*\)$/3\1/; tn
+s/1\(_*\)$/2\1/; tn
+s/0\(_*\)$/1\1/; tn
+
+:n
+y/_/0/
+@end example
+@c end---------------------------------------------
+
+@node Rename files to lower case
+@section Rename Files to Lower Case
+
+This is a pretty strange use of @command{sed}.  We transform text, and
+transform it to be shell commands, then just feed them to shell.
+Don't worry, even worse hacks are done when using @command{sed}; I have
+seen a script converting the output of @command{date} into a @command{bc}
+program!
+ 
+The main body of this is the @command{sed} script, which remaps the name
+from lower to upper (or vice-versa) and even checks out 
+if the remapped name is the same as the original name.
+Note how the script is parameterized using shell
+variables and proper quoting.
+
+@c start-------------------------------------------
+@example
+#! /bin/sh
+# rename files to lower/upper case... 
+#
+# usage: 
+#    move-to-lower * 
+#    move-to-upper * 
+# or
+#    move-to-lower -R .
+#    move-to-upper -R .
+#
+
+help()
+@{
+	cat << eof
+Usage: $0 [-n] [-r] [-h] files...
+
+-n      do nothing, only see what would be done
+-R      recursive (use find)
+-h      this message
+files   files to remap to lower case
+
+Examples:
+       $0 -n *        (see if everything is ok, then...)
+       $0 *
+
+       $0 -R .
+
+eof
+@}
+
+apply_cmd='sh'
+finder='echo "$@@" | tr " " "\n"'
+files_only=
+
+while :
+do
+    case "$1" in 
+        -n) apply_cmd='cat' ;;
+        -R) finder='find "$@@" -type f';;
+        -h) help ; exit 1 ;;
+        *) break ;;
+    esac
+    shift
+done
+
+if [ -z "$1" ]; then
+        echo Usage: $0 [-h] [-n] [-r] files...
+        exit 1
+fi
+
+LOWER='abcdefghijklmnopqrstuvwxyz'
+UPPER='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+
+case `basename $0` in
+        *upper*) TO=$UPPER; FROM=$LOWER ;;
+        *)       FROM=$UPPER; TO=$LOWER ;;
+esac
+	
+eval $finder | sed -n '
+
+# remove all trailing slashes
+s/\/*$//
+
+# add ./ if there is no path, only a filename
+/\//! s/^/.\//
+
+# save path+filename
+h
+
+# remove path
+s/.*\///
+
+# do conversion only on filename
+y/'$FROM'/'$TO'/
+
+# now line contains original path+file, while
+# hold space contains the new filename
+x
+
+# add converted file name to line, which now contains
+# path/file-name\nconverted-file-name
+G
+
+# check if converted file name is equal to original file name,
+# if it is, do not print nothing
+/^.*\/\(.*\)\n\1/b
+
+# now, transform path/fromfile\n, into
+# mv path/fromfile path/tofile and print it
+s/^\(.*\/\)\(.*\)\n\(.*\)$/mv "\1\2" "\1\3"/p
+
+' | $apply_cmd
+@end example
+@c end---------------------------------------------
+
+@node Print bash environment
+@section Print @command{bash} Environment
+
+This script strips the definition of the shell functions
+from the output of the @command{set} Bourne-shell command.
+
+@c start-------------------------------------------
+@example
+#!/bin/sh
+
+set | sed -n '
+:x
+
+@ifinfo
+# if no occurrence of "=()" print and load next line
+@end ifinfo
+@ifnotinfo
+# if no occurrence of @samp{=()} print and load next line
+@end ifnotinfo
+/=()/! @{ p; b; @}
+/ () $/! @{ p; b; @}
+
+# possible start of functions section
+# save the line in case this is a var like FOO="() "
+h
+
+# if the next line has a brace, we quit because
+# nothing comes after functions
+n
+/^@{/ q
+
+# print the old line
+x; p
+
+# work on the new line now
+x; bx
+'
+@end example
+@c end---------------------------------------------
+
+@node Reverse chars of lines
+@section Reverse Characters of Lines
+
+This script can be used to reverse the position of characters
+in lines.  The technique moves two characters at a time, hence
+it is faster than more intuitive implementations.
+
+Note the @code{tx} command before the definition of the label.
+This is often needed to reset the flag that is tested by
+the @code{t} command.
+
+Imaginative readers will find uses for this script.  An example
+is reversing the output of @command{banner}.@footnote{This requires
+another script to pad the output of banner; for example
+
+@example
+#! /bin/sh
+
+banner -w $1 $2 $3 $4 |
+  sed -e :a -e '/^.\@{0,'$1'\@}$/ @{ s/$/ /; ba; @}' |
+  ~/sedscripts/reverseline.sed
+@end example
+}
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+/../! b
+
+# Reverse a line.  Begin embedding the line between two newlines
+s/^.*$/\
+&\
+/
+
+# Move first character at the end.  The regexp matches until
+# there are zero or one characters between the markers
+tx
+:x
+s/\(\n.\)\(.*\)\(.\n\)/\3\2\1/
+tx
+
+# Remove the newline markers
+s/\n//g
+@end example
+@c end---------------------------------------------
+
+@node tac
+@section Reverse Lines of Files
+
+This one begins a series of totally useless (yet interesting)
+scripts emulating various Unix commands.  This, in particular,
+is a @command{tac} workalike.
+
+Note that on implementations other than @acronym{GNU} @command{sed}
+@ifset PERL
+and @value{SSED}
+@end ifset
+this script might easily overflow internal buffers.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+# reverse all lines of input, i.e. first line became last, ...
+
+# from the second line, the buffer (which contains all previous lines)
+# is *appended* to current line, so, the order will be reversed
+1! G
+
+# on the last line we're done -- print everything
+$ p
+
+# store everything on the buffer again
+h
+@end example
+@c end---------------------------------------------
+
+@node cat -n
+@section Numbering Lines
+
+This script replaces @samp{cat -n}; in fact it formats its output
+exactly like @acronym{GNU} @command{cat} does.
+
+Of course this is completely useless and for two reasons:  first,
+because somebody else did it in C, second, because the following
+Bourne-shell script could be used for the same purpose and would
+be much faster:
+
+@c start-------------------------------------------
+@example
+#! /bin/sh
+sed -e "=" $@@ | sed -e '
+  s/^/      /
+  N
+  s/^ *\(......\)\n/\1  /
+'
+@end example
+@c end---------------------------------------------
+
+It uses @command{sed} to print the line number, then groups lines two
+by two using @code{N}.  Of course, this script does not teach as much as
+the one presented below.
+
+The algorithm used for incrementing uses both buffers, so the line
+is printed as soon as possible and then discarded.  The number
+is split so that changing digits go in a buffer and unchanged ones go
+in the other; the changed digits are modified in a single step
+(using a @code{y} command).  The line number for the next line
+is then composed and stored in the hold space, to be used in the
+next iteration.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+# Prime the pump on the first line
+x
+/^$/ s/^.*$/1/
+
+# Add the correct line number before the pattern
+G
+h
+
+# Format it and print it
+s/^/      /
+s/^ *\(......\)\n/\1  /p
+
+# Get the line number from hold space; add a zero
+# if we're going to add a digit on the next line
+g
+s/\n.*$//
+/^9*$/ s/^/0/
+
+# separate changing/unchanged digits with an x
+s/.9*$/x&/
+
+# keep changing digits in hold space
+h
+s/^.*x//
+y/0123456789/1234567890/
+x
+
+# keep unchanged digits in pattern space
+s/x.*$//
+
+# compose the new number, remove the newline implicitly added by G
+G
+s/\n//
+h
+@end example
+@c end---------------------------------------------
+
+@node cat -b
+@section Numbering Non-blank Lines
+
+Emulating @samp{cat -b} is almost the same as @samp{cat -n}---we only
+have to select which lines are to be numbered and which are not.
+
+The part that is common to this script and the previous one is
+not commented to show how important it is to comment @command{sed}
+scripts properly...
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+/^$/ @{
+  p
+  b
+@}
+
+# Same as cat -n from now
+x
+/^$/ s/^.*$/1/
+G
+h
+s/^/      /
+s/^ *\(......\)\n/\1  /p
+x
+s/\n.*$//
+/^9*$/ s/^/0/
+s/.9*$/x&/
+h
+s/^.*x//
+y/0123456789/1234567890/
+x
+s/x.*$//
+G
+s/\n//
+h
+@end example
+@c end---------------------------------------------
+
+@node wc -c
+@section Counting Characters
+
+This script shows another way to do arithmetic with @command{sed}.
+In this case we have to add possibly large numbers, so implementing
+this by successive increments would not be feasible (and possibly
+even more complicated to contrive than this script).
+
+The approach is to map numbers to letters, kind of an abacus
+implemented with @command{sed}.  @samp{a}s are units, @samp{b}s are
+tens and so on: we simply add the number of characters
+on the current line as units, and then propagate the carry
+to tens, hundreds, and so on.
+
+As usual, running totals are kept in hold space.
+
+On the last line, we convert the abacus form back to decimal.
+For the sake of variety, this is done with a loop rather than
+with some 80 @code{s} commands@footnote{Some implementations
+have a limit of 199 commands per script}: first we
+convert units, removing @samp{a}s from the number; then we
+rotate letters so that tens become @samp{a}s, and so on
+until no more letters remain.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+# Add n+1 a's to hold space (+1 is for the newline)
+s/./a/g
+H
+x
+s/\n/a/
+
+# Do the carry.  The t's and b's are not necessary,
+# but they do speed up the thing
+t a
+: a;  s/aaaaaaaaaa/b/g; t b; b done
+: b;  s/bbbbbbbbbb/c/g; t c; b done
+: c;  s/cccccccccc/d/g; t d; b done
+: d;  s/dddddddddd/e/g; t e; b done
+: e;  s/eeeeeeeeee/f/g; t f; b done
+: f;  s/ffffffffff/g/g; t g; b done
+: g;  s/gggggggggg/h/g; t h; b done
+: h;  s/hhhhhhhhhh//g
+
+: done
+$! @{
+  h
+  b
+@}
+
+# On the last line, convert back to decimal
+
+: loop
+/a/! s/[b-h]*/&0/
+s/aaaaaaaaa/9/
+s/aaaaaaaa/8/
+s/aaaaaaa/7/
+s/aaaaaa/6/
+s/aaaaa/5/
+s/aaaa/4/
+s/aaa/3/
+s/aa/2/
+s/a/1/
+
+: next
+y/bcdefgh/abcdefg/
+/[a-h]/ b loop
+p
+@end example
+@c end---------------------------------------------
+
+@node wc -w
+@section Counting Words
+
+This script is almost the same as the previous one, once each
+of the words on the line is converted to a single @samp{a}
+(in the previous script each letter was changed to an @samp{a}).
+
+It is interesting that real @command{wc} programs have optimized
+loops for @samp{wc -c}, so they are much slower at counting
+words rather than characters.  This script's bottleneck,
+instead, is arithmetic, and hence the word-counting one
+is faster (it has to manage smaller numbers).
+
+Again, the common parts are not commented to show the importance
+of commenting @command{sed} scripts.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+# Convert words to a's
+s/[ @kbd{tab}][ @kbd{tab}]*/ /g
+s/^/ /
+s/ [^ ][^ ]*/a /g
+s/ //g
+
+# Append them to hold space
+H
+x
+s/\n//
+
+# From here on it is the same as in wc -c.
+/aaaaaaaaaa/! bx;   s/aaaaaaaaaa/b/g
+/bbbbbbbbbb/! bx;   s/bbbbbbbbbb/c/g
+/cccccccccc/! bx;   s/cccccccccc/d/g
+/dddddddddd/! bx;   s/dddddddddd/e/g
+/eeeeeeeeee/! bx;   s/eeeeeeeeee/f/g
+/ffffffffff/! bx;   s/ffffffffff/g/g
+/gggggggggg/! bx;   s/gggggggggg/h/g
+s/hhhhhhhhhh//g
+:x
+$! @{ h; b; @}
+:y
+/a/! s/[b-h]*/&0/
+s/aaaaaaaaa/9/
+s/aaaaaaaa/8/
+s/aaaaaaa/7/
+s/aaaaaa/6/
+s/aaaaa/5/
+s/aaaa/4/
+s/aaa/3/
+s/aa/2/
+s/a/1/
+y/bcdefgh/abcdefg/
+/[a-h]/ by
+p
+@end example
+@c end---------------------------------------------
+
+@node wc -l
+@section Counting Lines
+
+No strange things are done now, because @command{sed} gives us
+@samp{wc -l} functionality for free!!! Look:
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+$=
+@end example
+@c end---------------------------------------------
+
+@node head
+@section Printing the First Lines
+
+This script is probably the simplest useful @command{sed} script.
+It displays the first 10 lines of input; the number of displayed
+lines is right before the @code{q} command.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+10q
+@end example
+@c end---------------------------------------------
+
+@node tail
+@section Printing the Last Lines
+
+Printing the last @var{n} lines rather than the first is more complex
+but indeed possible.  @var{n} is encoded in the second line, before
+the bang character.
+
+This script is similar to the @command{tac} script in that it keeps the
+final output in the hold space and prints it at the end:
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+1! @{; H; g; @}
+1,10 !s/[^\n]*\n//
+$p
+h
+@end example
+@c end---------------------------------------------
+
+Mainly, the scripts keeps a window of 10 lines and slides it
+by adding a line and deleting the oldest (the substitution command
+on the second line works like a @code{D} command but does not
+restart the loop).
+
+The ``sliding window'' technique is a very powerful way to write
+efficient and complex @command{sed} scripts, because commands like
+@code{P} would require a lot of work if implemented manually.
+
+To introduce the technique, which is fully demonstrated in the
+rest of this chapter and is based on the @code{N}, @code{P}
+and @code{D} commands, here is an implementation of @command{tail}
+using a simple ``sliding window.''
+
+This looks complicated but in fact the working is the same as
+the last script: after we have kicked in the appropriate number
+of lines, however, we stop using the hold space to keep inter-line
+state, and instead use @code{N} and @code{D} to slide pattern
+space by one line:
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+1h
+2,10 @{; H; g; @}
+$q
+1,9d
+N
+D
+@end example
+@c end---------------------------------------------
+
+Note how the first, second and fourth line are inactive after
+the first ten lines of input.  After that, all the script does
+is: exiting on the last line of input, appending the next input
+line to pattern space, and removing the first line.
+
+@node uniq
+@section Make Duplicate Lines Unique
+
+This is an example of the art of using the @code{N}, @code{P}
+and @code{D} commands, probably the most difficult to master.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+h
+
+:b
+# On the last line, print and exit
+$b
+N
+/^\(.*\)\n\1$/ @{
+    # The two lines are identical.  Undo the effect of
+    # the n command.
+    g
+    bb
+@}
+
+# If the @code{N} command had added the last line, print and exit
+$b
+
+# The lines are different; print the first and go
+# back working on the second.
+P
+D
+@end example
+@c end---------------------------------------------
+
+As you can see, we mantain a 2-line window using @code{P} and @code{D}.
+This technique is often used in advanced @command{sed} scripts.
+
+@node uniq -d
+@section Print Duplicated Lines of Input
+
+This script prints only duplicated lines, like @samp{uniq -d}.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+$b
+N
+/^\(.*\)\n\1$/ @{
+    # Print the first of the duplicated lines
+    s/.*\n//
+    p
+
+    # Loop until we get a different line
+    :b
+    $b
+    N
+    /^\(.*\)\n\1$/ @{
+        s/.*\n//
+        bb
+    @}
+@}
+
+# The last line cannot be followed by duplicates
+$b
+
+# Found a different one.  Leave it alone in the pattern space
+# and go back to the top, hunting its duplicates
+D
+@end example
+@c end---------------------------------------------
+
+@node uniq -u
+@section Remove All Duplicated Lines
+
+This script prints only unique lines, like @samp{uniq -u}.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+# Search for a duplicate line --- until that, print what you find.
+$b
+N
+/^\(.*\)\n\1$/ ! @{
+    P
+    D
+@}
+
+:c
+# Got two equal lines in pattern space.  At the
+# end of the file we simply exit
+$d
+
+# Else, we keep reading lines with @code{N} until we
+# find a different one
+s/.*\n//
+N
+/^\(.*\)\n\1$/ @{
+    bc
+@}
+
+# Remove the last instance of the duplicate line
+# and go back to the top
+D
+@end example
+@c end---------------------------------------------
+
+@node cat -s
+@section Squeezing Blank Lines
+
+As a final example, here are three scripts, of increasing complexity
+and speed, that implement the same function as @samp{cat -s}, that is
+squeezing blank lines.
+
+The first leaves a blank line at the beginning and end if there are
+some already.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+# on empty lines, join with next
+# Note there is a star in the regexp
+:x
+/^\n*$/ @{
+N
+bx
+@}
+
+# now, squeeze all '\n', this can be also done by:
+# s/^\(\n\)*/\1/
+s/\n*/\
+/
+@end example
+@c end---------------------------------------------
+
+This one is a bit more complex and removes all empty lines
+at the beginning.  It does leave a single blank line at end
+if one was there.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+# delete all leading empty lines
+1,/^./@{
+/./!d
+@}
+
+# on an empty line we remove it and all the following
+# empty lines, but one
+:x
+/./!@{
+N
+s/^\n$//
+tx
+@}
+@end example
+@c end---------------------------------------------
+
+This removes leading and trailing blank lines.  It is also the
+fastest.  Note that loops are completely done with @code{n} and
+@code{b}, without relying on @command{sed} to restart the
+the script automatically at the end of a line.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+# delete all (leading) blanks
+/./!d
+
+# get here: so there is a non empty
+:x
+# print it
+p
+# get next
+n
+# got chars? print it again, etc... 
+/./bx
+
+# no, don't have chars: got an empty line
+:z
+# get next, if last line we finish here so no trailing
+# empty lines are written
+n
+# also empty? then ignore it, and get next... this will
+# remove ALL empty lines
+/./!bz
+
+# all empty lines were deleted/ignored, but we have a non empty.  As
+# what we want to do is to squeeze, insert a blank line artificially
+i\
+
+bx
+@end example
+@c end---------------------------------------------
+
+@node Limitations
+@chapter @value{SSED}'s Limitations and Non-limitations
+
+@cindex @acronym{GNU} extensions, unlimited line length
+@cindex Portability, line length limitations
+For those who want to write portable @command{sed} scripts,
+be aware that some implementations have been known to
+limit line lengths (for the pattern and hold spaces)
+to be no more than 4000 bytes.
+The @sc{posix} standard specifies that conforming @command{sed}
+implementations shall support at least 8192 byte line lengths.
+@value{SSED} has no built-in limit on line length;
+as long as it can @code{malloc()} more (virtual) memory,
+you can feed or construct lines as long as you like.
+
+However, recursion is used to handle subpatterns and indefinite
+repetition.  This means that the available stack space may limit
+the size of the buffer that can be processed by certain patterns.
+
+@ifset PERL
+There are some size limitations in the regular expression
+matcher but it is hoped that they will never in practice
+be relevant.  The maximum length of a compiled pattern
+is 65539 (sic) bytes.  All values in repeating quantifiers
+must be less than 65536.  The maximum nesting depth of
+all parenthesized subpatterns, including capturing and
+non-capturing subpatterns@footnote{The
+distinction is meaningful when referring to Perl-style
+regular expressions.}, assertions, and other types of
+subpattern, is 200.
+
+Also, @value{SSED} recognizes the @sc{posix} syntax
+@code{[.@var{ch}.]} and @code{[=@var{ch}=]}
+where @var{ch} is a ``collating element'', but these
+are not supported, and an error is given if they are
+encountered.
+
+Here are a few distinctions between the real Perl-style
+regular expressions and those that @option{-R} recognizes.
+
+@enumerate
+@item
+Lookahead assertions do not allow repeat quantifiers after them
+Perl permits them, but they do not mean what you
+might think. For example, @samp{(?!a)@{3@}} does not assert that the
+next three characters are not @samp{a}. It just asserts three times that the
+next character is not @samp{a} --- a waste of time and nothing else.
+
+@item
+Capturing subpatterns that occur inside  negative  lookahead
+head  assertions  are  counted,  but  their  entries are counted
+as empty in the second half of an @code{s} command.
+Perl sets its numerical variables from any such patterns
+that are matched before the assertion fails to match
+something (thereby succeeding), but only if the negative
+lookahead assertion contains just one branch.
+
+@item
+The following Perl escape sequences are not supported:
+@samp{\l}, @samp{\u}, @samp{\L}, @samp{\U}, @samp{\E},
+@samp{\Q}. In fact these are implemented by Perl's general
+string-handling and are not part of its pattern matching engine.
+
+@item
+The Perl @samp{\G} assertion is not supported as it is not
+relevant to single pattern matches.
+
+@item
+Fairly obviously, @value{SSED} does not support the @samp{(?@{code@})}
+and @samp{(?p@{code@})} constructions. However, there is some experimental
+support for recursive patterns using the non-Perl item @samp{(?R)}.
+
+@item
+There are at the time of writing some oddities in Perl
+5.005_02 concerned with the settings of captured strings
+when part of a pattern is repeated. For example, matching
+@samp{aba} against the pattern @samp{/^(a(b)?)+$/} sets
+@samp{$2}@footnote{@samp{$2} would be @samp{\2} in @value{SSED}.}
+to the value @samp{b}, but matching @samp{aabbaa}
+against @samp{/^(aa(bb)?)+$/} leaves @samp{$2}
+unset.  However, if the pattern is changed to
+@samp{/^(aa(b(b))?)+$/} then @samp{$2} (and @samp{$3}) are set.
+In Perl 5.004 @samp{$2} is set in both cases, and that is also
+true of @value{SSED}.
+
+@item
+Another as yet unresolved discrepancy is that in Perl
+5.005_02 the pattern @samp{/^(a)?(?(1)a|b)+$/} matches
+the string @samp{a}, whereas in @value{SSED} it does not.
+However, in both Perl and @value{SSED} @samp{/^(a)?a/} matched
+against @samp{a} leaves $1 unset.
+@end enumerate
+@end ifset
+
+@node Other Resources
+@chapter Other Resources for Learning About @command{sed}
+
+@cindex Additional reading about @command{sed}
+In addition to several books that have been written about @command{sed}
+(either specifically or as chapters in books which discuss
+shell programming), one can find out more about @command{sed}
+(including suggestions of a few books) from the FAQ
+for the @code{sed-users} mailing list, available from any of:
+@display
+ @uref{http://www.student.northpark.edu/pemente/sed/sedfaq.html}
+ @uref{http://sed.sf.net/grabbag/tutorials/sedfaq.html}
+@end display
+
+Also of interest are
+@uref{http://www.student.northpark.edu/pemente/sed/index.htm}
+and @uref{http://sed.sf.net/grabbag},
+which include @command{sed} tutorials and other @command{sed}-related goodies.
+
+The @code{sed-users} mailing list itself maintained by Sven Guckes.
+To subscribe, visit @uref{http://groups.yahoo.com} and search
+for the @code{sed-users} mailing list.
+
+@node Reporting Bugs
+@chapter Reporting Bugs
+
+@cindex Bugs, reporting
+Email bug reports to @email{bonzini@@gnu.org}.
+Be sure to include the word ``sed'' somewhere in the @code{Subject:} field.
+Also, please include the output of @samp{sed --version} in the body
+of your report if at all possible.
+
+Please do not send a bug report like this:
+
+@example
+@i{while building frobme-1.3.4}
+$ configure 
+@error{} sed: file sedscr line 1: Unknown option to 's'
+@end example
+
+If @value{SSED} doesn't configure your favorite package, take a
+few extra minutes to identify the specific problem and make a stand-alone
+test case.  Unlike other programs such as C compilers, making such test
+cases for @command{sed} is quite simple.
+
+A stand-alone test case includes all the data necessary to perform the
+test, and the specific invocation of @command{sed} that causes the problem.
+The smaller a stand-alone test case is, the better.  A test case should
+not involve something as far removed from @command{sed} as ``try to configure
+frobme-1.3.4''.  Yes, that is in principle enough information to look
+for the bug, but that is not a very practical prospect.
+
+Here are a few commonly reported bugs that are not bugs.
+
+@table @asis
+@item @code{N} command on the last line
+@cindex Portability, @code{N} command on the last line
+@cindex Non-bugs, @code{N} command on the last line
+
+Most versions of @command{sed} exit without printing anything when
+the @command{N} command is issued on the last line of a file.
+@value{SSED} prints pattern space before exiting unless of course
+the @command{-n} command switch has been specified.  This choice is
+by design.
+
+For example, the behavior of
+@example
+sed N foo bar
+@end example
+@noindent
+would depend on whether foo has an even or an odd number of
+lines@footnote{which is the actual ``bug'' that prompted the
+change in behavior}.  Or, when writing a script to read the
+next few lines following a pattern match, traditional
+implementations of @code{sed} would force you to write
+something like
+@example
+/foo/@{ $!N; $!N; $!N; $!N; $!N; $!N; $!N; $!N; $!N @}
+@end example
+@noindent
+instead of just
+@example
+/foo/@{ N;N;N;N;N;N;N;N;N; @}
+@end example
+ 
+@cindex @code{POSIXLY_CORRECT} behavior, @code{N} command
+In any case, the simplest workaround is to use @code{$d;N} in
+scripts that rely on the traditional behavior, or to set
+the @code{POSIXLY_CORRECT} variable to a non-empty value.
+
+@item Regex syntax clashes (problems with backslashes)
+@cindex @acronym{GNU} extensions, to basic regular expressions
+@cindex Non-bugs, regex syntax clashes
+@command{sed} uses the @sc{posix} basic regular expression syntax.  According to
+the standard, the meaning of some escape sequences is undefined in
+this syntax;  notable in the case of @command{sed} are @code{\|},
+@code{\+}, @code{\?}, @code{\`}, @code{\'}, @code{\<},
+@code{\>}, @code{\b}, @code{\B}, @code{\w}, and @code{\W}.
+
+As in all @acronym{GNU} programs that use @sc{posix} basic regular
+expressions, @command{sed} interprets these escape sequences as special
+characters.  So, @code{x\+} matches one or more occurrences of @samp{x}.
+@code{abc\|def} matches either @samp{abc} or @samp{def}.
+
+This syntax may cause problems when running scripts written for other
+@command{sed}s.  Some @command{sed} programs have been written with the
+assumption that @code{\|} and @code{\+} match the literal characters
+@code{|} and @code{+}.  Such scripts must be modified by removing the
+spurious backslashes if they are to be used with modern implementations
+of @command{sed}, like
+@ifset PERL
+@value{SSED} or
+@end ifset
+@acronym{GNU} @command{sed}.
+
+On the other hand, some scripts use s|abc\|def||g to remove occurrences
+of @emph{either} @code{abc} or @code{def}.  While this worked until
+@command{sed} 4.0.x, newer versions interpret this as removing the
+string @code{abc|def}.  This is again undefined behavior according to
+@acronym{POSIX}, and this interpretation is arguably more robust: older
+@command{sed}s, for example, required that the regex matcher parsed
+@code{\/} as @code{/} in the common case of escaping a slash, which is
+again undefined behavior; the new behavior avoids this, and this is good
+because the regex matcher is only partially under our control.
+
+@cindex @acronym{GNU} extensions, special escapes
+In addition, this version of @command{sed} supports several escape characters
+(some of which are multi-character) to insert non-printable characters
+in scripts (@code{\a}, @code{\c}, @code{\d}, @code{\o}, @code{\r},
+@code{\t}, @code{\v}, @code{\x}).  These can cause similar problems
+with scripts written for other @command{sed}s.
+
+@item @option{-i} clobbers read-only files
+@cindex In-place editing
+@cindex @value{SSEDEXT}, in-place editing
+@cindex Non-bugs, in-place editing
+
+In short, @samp{sed -i} will let you delete the contents of
+a read-only file, and in general the @option{-i} option
+(@pxref{Invoking sed, , Invocation}) lets you clobber
+protected files.  This is not a bug, but rather a consequence
+of how the Unix filesystem works.
+
+The permissions on a file say what can happen to the data
+in that file, while the permissions on a directory say what can
+happen to the list of files in that directory.  @samp{sed -i}
+will not ever open for writing  a file that is already on disk.
+Rather, it will work on a temporary file that is finally renamed
+to the original name: if you rename or delete files, you're actually
+modifying the contents of the directory, so the operation depends on
+the permissions of the directory, not of the file.  For this same
+reason, @command{sed} does not let you use @option{-i} on a writeable file
+in a read-only directory (but unbelievably nobody reports that as a
+bug@dots{}).
+
+@item @code{0a} does not work (gives an error)
+There is no line 0.  0 is a special address that is only used to treat
+addresses like @code{0,/@var{RE}/} as active when the script starts: if
+you write @code{1,/abc/d} and the first line includes the word @samp{abc},
+then that match would be ignored because address ranges must span at least
+two lines (barring the end of the file); but what you probably wanted is
+to delete every line up to the first one including @samp{abc}, and this
+is obtained with @code{0,/abc/d}.
+
+@ifclear PERL
+@item @code{[a-z]} is case insensitive
+You are encountering problems with locales.  POSIX mandates that @code{[a-z]}
+uses the current locale's collation order -- in C parlance, that means using
+@code{strcoll(3)} instead of @code{strcmp(3)}.  Some locales have a
+case-insensitive collation order, others don't: one of those that have
+problems is Estonian.
+
+Another problem is that @code{[a-z]} tries to use collation symbols.
+This only happens if you are on the @acronym{GNU} system, using
+@acronym{GNU} libc's regular expression matcher instead of compiling the
+one supplied with @acronym{GNU} sed.  In a Danish locale, for example,
+the regular expression @code{^[a-z]$} matches the string @samp{aa},
+because this is a single collating symbol that comes after @samp{a}
+and before @samp{b}; @samp{ll} behaves similarly in Spanish
+locales, or @samp{ij} in Dutch locales.
+
+To work around these problems, which may cause bugs in shell scripts, set
+the @env{LC_COLLATE} and @env{LC_CTYPE} environment variables to @samp{C}.
+@end ifclear
+@end table
+
+
+@node Extended regexps
+@appendix Extended regular expressions
+@cindex Extended regular expressions, syntax
+
+The only difference between basic and extended regular expressions is in
+the behavior of a few characters: @samp{?}, @samp{+}, parentheses,
+and braces (@samp{@{@}}).  While basic regular expressions require
+these to be escaped if you want them to behave as special characters,
+when using extended regular expressions you must escape them if
+you want them @emph{to match a literal character}.
+
+@noindent
+Examples:
+@table @code
+@item abc?
+becomes @samp{abc\?} when using extended regular expressions.  It matches
+the literal string @samp{abc?}.
+
+@item c\+
+becomes @samp{c+} when using extended regular expressions.  It matches
+one or more @samp{c}s.
+
+@item a\@{3,\@}
+becomes @samp{a@{3,@}} when using extended regular expressions.  It matches
+three or more @samp{a}s.
+
+@item \(abc\)\@{2,3\@}
+becomes @samp{(abc)@{2,3@}} when using extended regular expressions.  It
+matches either @samp{abcabc} or @samp{abcabcabc}.
+
+@item \(abc*\)\1
+becomes @samp{(abc*)\1} when using extended regular expressions.
+Backreferences must still be escaped when using extended regular
+expressions.
+@end table
+
+@ifset PERL
+@node Perl regexps
+@appendix Perl-style regular expressions
+@cindex Perl-style regular expressions, syntax
+
+@emph{This part is taken from the @file{pcre.txt} file distributed together
+with the free @sc{pcre} regular expression matcher; it was written by Philip Hazel.}
+
+Perl introduced several extensions to regular expressions, some
+of them incompatible with the syntax of regular expressions
+accepted by Emacs and other @acronym{GNU} tools (whose matcher was
+based on the Emacs matcher).  @value{SSED} implements
+both kinds of extensions.
+
+@iftex
+Summarizing, we have:
+
+@itemize @bullet
+@item
+A backslash can introduce several special sequences
+
+@item
+The circumflex, dollar sign, and period characters behave specially 
+with regard to new lines
+
+@item
+Strange uses of square brackets are parsed differently
+
+@item
+You can toggle modifiers in the middle of a regular expression
+
+@item
+You can specify that a subpattern does not count when numbering backreferences
+
+@item
+@cindex Greedy regular expression matching
+You can specify greedy or non-greedy matching
+
+@item
+You can have more than ten back references
+
+@item
+You can do complex look aheads and look behinds (in the spirit of
+@code{\b}, but with subpatterns).
+
+@item
+You can often improve performance by avoiding that @command{sed} wastes
+time with backtracking
+
+@item
+You can have if/then/else branches
+
+@item
+You can do recursive matches, for example to look for unbalanced parentheses
+
+@item
+You can have comments and non-significant whitespace, because things can
+get complex...
+@end itemize
+
+Most of these extensions are introduced by the special @code{(?}
+sequence, which gives special meanings to parenthesized groups.
+@end iftex
+@menu
+Other extensions can be roughly subdivided in two categories
+On one hand Perl introduces several more escaped sequences
+(that is, sequences introduced by a backslash).  On the other
+hand, it specifies that if a question mark follows an open
+parentheses it should give a special meaning to the parenthesized
+group.
+
+* Backslash::                       Introduces special sequences
+* Circumflex/dollar sign/period::   Behave specially with regard to new lines
+* Square brackets::                 Are a bit different in strange cases
+* Options setting::                 Toggle modifiers in the middle of a regexp
+* Non-capturing subpatterns::       Are not counted when backreferencing
+* Repetition::                      Allows for non-greedy matching
+* Backreferences::                  Allows for more than 10 back references
+* Assertions::                      Allows for complex look ahead matches
+* Non-backtracking subpatterns::    Often gives more performance
+* Conditional subpatterns::         Allows if/then/else branches
+* Recursive patterns::              For example to match parentheses
+* Comments::                        Because things can get complex...
+@end menu
+
+@node Backslash
+@appendixsec Backslash
+@cindex Perl-style regular expressions, escaped sequences
+
+There are a few difference in the handling of backslashed 
+sequences in Perl mode.
+
+First of all, there are no @code{\o} and @code{\d} sequences.
+@sc{ascii} values for characters can be specified in octal
+with a @code{\@var{xxx}} sequence, where @var{xxx} is a
+sequence of up to three octal digits.  If the first digit
+is a zero, the treatment of the sequence is straightforward;
+just note that if the character that follows the escaped digit
+is itself an octal digit, you have to supply three octal digits
+for @var{xxx}.  For example @code{\07} is a @sc{bel} character
+rather than a @sc{nul} and a literal @code{7} (this sequence is
+instead represented by @code{\0007}).
+
+@cindex Perl-style regular expressions, backreferences
+The handling of a backslash followed by a digit other than 0
+is complicated.  Outside a character class, @command{sed} reads it
+and any following digits as a decimal number. If the number
+is less than 10, or if there have been at least that many
+previous capturing left parentheses in the expression, the
+entire sequence is taken as a back reference. A description
+of how this works is given later, following the discussion
+of parenthesized subpatterns.
+
+Inside a character class, or if the decimal number is
+greater than 9 and there have not been that many capturing
+subpatterns, @command{sed} re-reads up to three octal digits following
+the backslash, and generates a single byte from the
+least significant 8 bits of the value. Any subsequent digits
+stand for themselves.  For example:
+
+@example
+     \040  @i{is another way of writing a space}
+     \40   @i{is the same, provided there are fewer than 40}
+           @i{previous capturing subpatterns}
+     \7    @i{is always a back reference}
+     \011  @i{is always a tab}
+     \11   @i{might be a back reference, or another way of}
+           @i{writing a tab}
+     \0113 @i{is a tab followed by the character @samp{3}}
+     \113  @i{is the character with octal code 113 (since there}
+           @i{can be no more than 99 back references)}
+     \377  @i{is a byte consisting entirely of 1 bits (@sc{ascii} 255)}
+     \81   @i{is either a back reference, or a binary zero}
+           @i{followed by the two characters @samp{81}}
+@end example
+
+Note that octal values of 100 or greater must not be introduced
+duced by a leading zero, because no more than three octal
+digits are ever read.
+
+All the sequences that define a single byte value can be
+used both inside and outside character classes. In addition,
+inside a character class, the sequence @code{\b} is interpreted
+as the backspace character (hex 08). Outside a character
+class it has a different meaning (see below).
+
+In addition, there are four additional escapes specifying
+generic character classes (like @code{\w} and @code{\W} do):
+
+@cindex Perl-style regular expressions, character classes
+@table @samp
+@item \d
+Matches any decimal digit
+
+@item \D
+Matches any character that is not a decimal digit
+@end table
+
+In Perl mode, these character type sequences can appear both inside and
+outside character classes. Instead, in @sc{posix} mode these sequences
+(as well as @code{\w} and @code{\W}) are treated as two literal characters
+(a backslash and a letter) inside square brackets.
+
+Escaped sequences specifying assertions are also different in
+Perl mode.  An assertion specifies a condition that has to be met
+at a particular point in a match, without consuming any
+characters from the subject string. The use of subpatterns
+for more complicated assertions is described below.  The
+backslashed assertions are
+
+@cindex Perl-style regular expressions, assertions
+@table @samp
+@item \b
+Asserts that the point is at a word boundary.
+A word boundary is a position in the subject string where
+the current character and the previous character do not both
+match @code{\w} or @code{\W} (i.e. one matches @code{\w} and
+the other matches @code{\W}), or the start or end of the string
+if the first or last character matches @code{\w}, respectively.
+
+@item \B
+Asserts that the point is not at a word boundary.
+
+@item \A
+Asserts the matcher is at the start of pattern space (independent
+of multiline mode).
+
+@item \Z
+Asserts the matcher is at the end of pattern space,
+or at a newline before the end of pattern space (independent of
+multiline mode)
+
+@item \z
+Asserts the matcher is at the end of pattern space (independent
+of multiline mode)
+@end table
+
+These assertions may not appear in character classes (but
+note that @code{\b} has a different meaning, namely the
+backspace character, inside a character class).
+Note that Perl mode does not support directly assertions
+for the beginning and the end of word; the @acronym{GNU} extensions
+@code{\<} and @code{\>} achieve this purpose in @sc{posix} mode
+instead.
+
+The @code{\A}, @code{\Z}, and @code{\z} assertions differ
+from the traditional circumflex and dollar sign (described below)
+in that they only ever match at the very start and end of the
+subject string, whatever options are set; in particular @code{\A}
+and @code{\z} are the same as the @acronym{GNU} extensions
+@code{\`} and @code{\'} that are active in @sc{posix} mode.
+
+@node Circumflex/dollar sign/period
+@appendixsec Circumflex, dollar sign, period
+@cindex Perl-style regular expressions, newlines
+
+Outside a character class, in the default matching mode, the
+circumflex character is an assertion which is true only if
+the current matching point is at the start of the subject
+string.  Inside a character class, the circumflex has an entirely
+different meaning (see below).
+
+The circumflex need not be the first character of the pattern if
+a number of alternatives are involved, but it should be the
+first thing in each alternative in which it appears if the
+pattern is ever to match that branch. If all possible alternatives,
+start with a circumflex, that is, if the pattern is
+constrained to match only at the start of the subject, it is
+said to be an @dfn{anchored} pattern. (There are also other constructs
+structs that can cause a pattern to be anchored.)
+
+A dollar sign is an assertion which is true only if the
+current matching point is at the end of the subject string,
+or immediately before a newline character that is the last
+character in the string (by default).  A dollar sign need not be the
+last character of the pattern if a number of alternatives
+are involved, but it should be the last item in any branch
+in which it appears.  A dollar sign has no special meaning in a
+character class.
+
+@cindex Perl-style regular expressions, multiline
+The meanings of the circumflex and dollar sign characters are
+changed if the @code{M} modifier option is used. When this is
+the case, they match immediately after and immediately
+before an internal @code{\n} character, respectively, in addition
+to matching at the start and end of the subject string.  For
+example, the pattern @code{/^abc$/} matches the subject string
+@samp{def\nabc} in multiline mode, but not otherwise.  Consequently,
+patterns that are anchored in single line mode
+because all branches start with @code{^} are not anchored in
+multiline mode.
+
+@cindex Perl-style regular expressions, multiline
+Note that the sequences @code{\A}, @code{\Z}, and @code{\z}
+can be used to match the start and end of the subject in both
+modes, and if all branches of a pattern start with @code{\A}
+is it always anchored, whether the @code{M} modifier is set or not.
+
+@cindex Perl-style regular expressions, single line
+Outside a character class, a dot in the pattern matches any
+one character in the subject, including a non-printing character,
+but not (by default) newline.  If the @code{S} modifier is used,
+dots match newlines as well.  Actually, the handling of
+dot is entirely independent of the handling of circumflex
+and dollar sign, the only relationship being that they both
+involve newline characters. Dot has no special meaning in a
+character class.
+
+@node Square brackets
+@appendixsec Square brackets
+@cindex Perl-style regular expressions, character classes
+
+An opening square bracket introduces a character class, terminated
+by a closing square bracket.  A closing square bracket on its own
+is not special.  If a closing square bracket is required as a
+member of the class, it should be the first data character in
+the class (after an initial circumflex, if present) or escaped with a backslash.
+
+A character class matches a single character in the subject;
+the character must be in the set of characters defined by
+the class, unless the first character in the class is a circumflex,
+in which case the subject character must not be in
+the set defined by the class. If a circumflex is actually
+required as a member of the class, ensure it is not the
+first character, or escape it with a backslash.
+
+For example, the character class [aeiou] matches any lower
+case vowel, while [^aeiou] matches any character that is not
+a lower case vowel. Note that a circumflex is just a convenient
+venient notation for specifying the characters which are in
+the class by enumerating those that are not. It is not an
+assertion: it still consumes a character from the subject
+string, and fails if the current pointer is at the end of
+the string.
+
+@cindex Perl-style regular expressions, case-insensitive
+When caseless matching is set, any letters in a class
+represent both their upper case and lower case versions, so
+for example, a caseless @code{[aeiou]} matches uppercase
+and lowercase @samp{A}s, and a caseless @code{[^aeiou]}
+does not match @samp{A}, whereas a case-sensitive version would.
+
+@cindex Perl-style regular expressions, single line
+@cindex Perl-style regular expressions, multiline
+The newline character is never treated in any special way in
+character classes, whatever the setting of the @code{S} and
+@code{M} options (modifiers) is.  A class such as @code{[^a]} will
+always match a newline.
+
+The minus (hyphen) character can be used to specify a range
+of characters in a character class.  For example, @code{[d-m]}
+matches any letter between d and m, inclusive.  If a minus
+character is required in a class, it must be escaped with a
+backslash or appear in a position where it cannot be interpreted
+as indicating a range, typically as the first or last
+character in the class.
+
+It is not possible to have the literal character @code{]} as the
+end character of a range.  A pattern such as @code{[W-]46]} is
+interpreted as a class of two characters (@code{W} and @code{-})
+followed by a literal string @code{46]}, so it would match
+@samp{W46]} or @samp{-46]}. However, if the @code{]} is escaped
+with a backslash it is interpreted as the end of range, so
+@code{[W-\]46]} is interpreted as a single class containing a
+range followed by two separate characters. The octal or
+hexadecimal representation of @code{]} can also be used to end a range.
+
+Ranges operate in @sc{ascii} collating sequence. They can also be
+used for characters specified numerically, for example
+@code{[\000-\037]}. If a range that includes letters is used when
+caseless matching is set, it matches the letters in either
+case. For example, a caseless @code{[W-c]} is equivalent to
+@code{[][\^_`wxyzabc]}, matched caselessly, and if character
+tables for the French locale are in use, @code{[\xc8-\xcb]}
+matches accented E characters in both cases.
+
+Unlike in @sc{posix} mode, the character types @code{\d},
+@code{\D}, @code{\s}, @code{\S}, @code{\w}, and @code{\W}
+may also appear in a character class, and add the characters
+that they match to the class. For example, @code{[\dABCDEF]} matches any
+hexadecimal digit.  A circumflex can conveniently be used
+with the upper case character types to specify a more restricted
+set of characters than the matching lower case type.
+For example, the class @code{[^\W_]} matches any letter or digit,
+but not underscore.
+
+All non-alphameric characters other than @code{\}, @code{-},
+@code{^} (at the start) and the terminating @code{]}
+are non-special in character classes, but it does no harm
+if they are escaped.
+
+Perl 5.6 supports the @sc{posix} notation for character classes, which
+uses names enclosed by @code{[:} and @code{:]} within the enclosing
+square brackets, and @value{SSED} supports this notation as well.
+For example,
+
+@example
+     [01[:alpha:]%]
+@end example
+
+@noindent
+matches @samp{0}, @samp{1}, any alphabetic character, or @samp{%}.
+The supported class names are
+
+@table @code
+@item alnum
+Matches letters and digits
+
+@item alpha
+Matches letters
+
+@item ascii
+Matches character codes 0 - 127
+
+@item cntrl
+Matches control characters
+
+@item digit
+Matches decimal digits (same as \d)
+
+@item graph
+Matches printing characters, excluding space
+
+@item lower
+Matches lower case letters
+
+@item print
+Matches printing characters, including space
+
+@item punct
+Matches printing characters, excluding letters and digits
+
+@item space
+Matches white space (same as \s)
+
+@item upper
+Matches upper case letters
+
+@item word
+Matches ``word'' characters (same as \w)
+
+@item xdigit
+Matches hexadecimal digits
+@end table
+
+The names @code{ascii} and @code{word} are extensions valid only in
+Perl mode.  Another Perl extension is negation, which is
+indicated by a circumflex character after the colon. For example,
+
+@example
+     [12[:^digit:]]
+@end example
+
+@noindent
+matches @samp{1}, @samp{2}, or any non-digit.
+
+@node Options setting
+@appendixsec Options setting
+@cindex Perl-style regular expressions, toggling options
+@cindex Perl-style regular expressions, case-insensitive
+@cindex Perl-style regular expressions, multiline
+@cindex Perl-style regular expressions, single line
+@cindex Perl-style regular expressions, extended
+
+The settings of the @code{I}, @code{M}, @code{S}, @code{X}
+modifiers can be changed from within the pattern by
+a sequence of Perl option letters enclosed between @code{(?}
+and @code{)}. The option letters must be lowercase.
+
+For example, @code{(?im)} sets caseless, multiline matching. It is
+also possible to unset these options by preceding the letter
+with a hyphen; you can also have combined settings and unsettings:
+@code{(?im-sx)} sets caseless and multiline matching,
+while unsets single line matching (for dots) and extended
+whitespace interpretation.  If a letter appears both before
+and after the hyphen, the option is unset.
+
+The scope of these option changes depends on where in the
+pattern the setting occurs. For settings that are outside
+any subpattern (defined below), the effect is the same as if
+the options were set or unset at the start of matching. The
+following patterns all behave in exactly the same way:
+
+@example
+     (?i)abc
+     a(?i)bc
+     ab(?i)c
+     abc(?i)
+@end example
+
+which in turn is the same as specifying the pattern abc with
+the @code{I} modifier.  In other words, ``top level'' settings
+apply to the whole pattern (unless there are other
+changes inside subpatterns). If there is more than one setting
+of the same option at top level, the rightmost setting
+is used.
+
+If an option change occurs inside a subpattern, the effect
+is different.  This is a change of behaviour in Perl 5.005.
+An option change inside a subpattern affects only that part
+of the subpattern @emph{that follows} it, so
+
+@example
+     (a(?i)b)c
+@end example
+
+@noindent
+matches abc and aBc and no other  strings  (assuming
+case-sensitive matching is used).  By this means, options can
+be made to have different settings in different parts of the
+pattern.  Any changes made in one alternative do carry on
+into subsequent branches within the same subpattern.  For
+example,
+
+@example
+     (a(?i)b|c)
+@end example
+
+@noindent
+matches @samp{ab}, @samp{aB}, @samp{c}, and @samp{C},
+even though when matching @samp{C} the first branch is
+abandoned before the option setting.
+This is because the effects of option settings happen at
+compile time. There would be some very weird behaviour otherwise.
+
+@ignore
+There are two PCRE-specific options PCRE_UNGREEDY and PCRE_EXTRA
+that can be changed in the same way as the Perl-compatible options by
+using the characters U and X respectively.  The (?X) flag
+setting is special in that it must always occur earlier in
+the pattern than any of the additional features it turns on,
+even when it is at top level. It is best put at the start.
+@end ignore
+
+
+@node Non-capturing subpatterns
+@appendixsec Non-capturing subpatterns
+@cindex Perl-style regular expressions, non-capturing subpatterns
+
+Marking part of a pattern as a subpattern does two things.
+On one hand, it localizes a set of alternatives; on the other
+hand, it sets up the subpattern as a capturing subpattern (as
+defined above).  The subpattern can be backreferenced and
+referenced in the right side of @code{s} commands.
+
+For example, if the string @samp{the red king} is matched against
+the pattern
+
+@example
+     the ((red|white) (king|queen))
+@end example
+
+@noindent
+the captured substrings are @samp{red king}, @samp{red},
+and @samp{king}, and are numbered 1, 2, and 3.
+
+The fact that plain parentheses fulfil two functions is not
+always helpful.  There are often times when a grouping
+subpattern is required without a capturing requirement.  If an
+opening parenthesis is followed by @code{?:}, the subpattern does
+not do any capturing, and is not counted when computing the
+number of any subsequent capturing subpatterns. For example,
+if the string @samp{the white queen} is matched against the pattern
+
+@example
+     the ((?:red|white) (king|queen))
+@end example
+
+@noindent
+the captured substrings are @samp{white queen} and @samp{queen},
+and are numbered 1 and 2. The maximum number of captured
+substrings is 99, while the maximum number of all subpatterns,
+both capturing and non-capturing, is 200.
+
+As a convenient shorthand, if any option settings are
+equired at the start of a non-capturing subpattern, the
+option letters may appear between the @code{?} and the
+@code{:}.  Thus the two patterns
+
+@example
+   (?i:saturday|sunday)
+   (?:(?i)saturday|sunday)
+@end example
+
+@noindent
+match exactly the same set of strings.  Because alternative
+branches are tried from left to right, and options are not
+reset until the end of the subpattern is reached, an option
+setting in one branch does affect subsequent branches, so
+the above patterns match @samp{SUNDAY} as well as @samp{Saturday}.
+
+
+@node Repetition
+@appendixsec Repetition
+@cindex Perl-style regular expressions, repetitions
+
+Repetition is specified by quantifiers, which can follow any
+of the following items:
+
+@itemize @bullet
+@item
+a single character, possibly escaped
+
+@item
+the @code{.} special character
+
+@item
+a character class
+
+@item
+a back reference (see next section)
+
+@item
+a parenthesized subpattern (unless it is an assertion; @pxref{Assertions})
+@end itemize
+
+The general repetition quantifier specifies a minimum and
+maximum number of permitted matches, by giving the two
+numbers in curly brackets (braces), separated by a comma.
+The numbers must be less than 65536, and the first must be
+less than or equal to the second. For example:
+
+@example
+     z@{2,4@}
+@end example
+
+@noindent
+matches @samp{zz}, @samp{zzz}, or @samp{zzzz}. A closing brace on its own
+is not a special character. If the second number is omitted,
+but the comma is present, there is no upper limit; if the
+second number and the comma are both omitted, the quantifier
+specifies an exact number of required matches. Thus
+
+@example
+     [aeiou]@{3,@}
+@end example
+
+@noindent
+matches at least 3 successive vowels, but may match many
+more, while
+
+@example
+     \d@{8@}
+@end example
+
+@noindent
+matches exactly 8 digits.  An opening curly bracket that
+appears in a position where a quantifier is not allowed, or
+one that does not match the syntax of a quantifier, is taken
+as a literal character. For example, @{,6@} is not a quantifier,
+but a literal string of four characters.@footnote{It
+raises an error if @option{-R} is not used.}
+
+The quantifier @samp{@{0@}} is permitted, causing the expression to
+behave as if the previous item and the quantifier were not
+present.
+
+For convenience (and historical compatibility) the three
+most common quantifiers have single-character abbreviations:
+
+@table @code
+@item *
+is equivalent to @{0,@}
+
+@item +
+is equivalent to @{1,@}
+
+@item ?
+is equivalent to @{0,1@}
+@end table
+
+It is possible to construct infinite loops by following a
+subpattern that can match no characters with a quantifier
+that has no upper limit, for example:
+
+@example
+     (a?)*
+@end example
+
+Earlier versions of Perl used to give an error at
+compile time for such patterns. However, because there are
+cases where this can be useful, such patterns are now
+accepted, but if any repetition of the subpattern does in
+fact match no characters, the loop is forcibly broken.
+
+@cindex Greedy regular expression matching
+@cindex Perl-style regular expressions, stingy repetitions
+By default, the quantifiers are @dfn{greedy} like in @sc{posix}
+mode, that is, they match as much as possible (up to the maximum
+number of permitted times), without causing the rest of the
+pattern to fail. The classic example of where this gives problems
+is in trying to match comments in C programs. These appear between
+the sequences @code{/*} and @code{*/} and within the sequence, individual
+@code{*} and @code{/} characters may appear. An attempt to match C
+comments by applying the pattern
+
+@example
+     /\*.*\*/
+@end example
+
+@noindent
+to the string
+
+@example
+     /* first command */ not comment /* second comment */
+@end example
+
+@noindent
+
+fails, because it matches the entire string owing to the
+greediness of the @code{.*} item.
+
+However, if a quantifier is followed by a question mark, it
+ceases to be greedy, and instead matches the minimum number
+of times possible, so the pattern @code{/\*.*?\*/}
+does the right thing with the C comments. The meaning of the
+various quantifiers is not otherwise changed, just the preferred
+number of matches.  Do not confuse this use of question
+mark with its use as a quantifier in its own right.
+Because it has two uses, it can sometimes appear doubled, as in
+
+@example
+     \d??\d
+@end example
+
+which matches one digit by preference, but can match two if
+that is the only way the rest of the pattern matches.
+
+Note that greediness does not matter when specifying addresses,
+but can be nevertheless used to improve performance.
+
+@ignore
+   If the PCRE_UNGREEDY option is set (an option which is not
+   available in Perl), the quantifiers are not greedy by
+   default, but individual ones can be made greedy by following
+   them with a question mark. In other words, it inverts the
+   default behaviour.
+@end ignore
+
+When a parenthesized subpattern is quantified with a minimum
+repeat count that is greater than 1 or with a limited maximum,
+more store is required for the compiled pattern, in
+proportion to the size of the minimum or maximum.
+
+@cindex Perl-style regular expressions, single line
+If a pattern starts with @code{.*} or @code{.@{0,@}} and the
+@code{S} modifier is used, the pattern is implicitly anchored,
+because whatever follows will be tried against every character
+position in the subject string, so there is no point in
+retrying the overall match at any position after the first.
+PCRE treats such a pattern as though it were preceded by \A.
+
+When a capturing subpattern is repeated, the value captured
+is the substring that matched the final iteration. For example,
+after
+
+@example
+     (tweedle[dume]@{3@}\s*)+
+@end example
+
+@noindent
+has matched @samp{tweedledum tweedledee} the value of the
+captured substring is @samp{tweedledee}.  However, if there are
+nested capturing subpatterns, the corresponding captured
+values may have been set in previous iterations. For example,
+after
+
+@example
+     /(a|(b))+/
+@end example
+
+matches @samp{aba}, the value of the second captured substring is
+@samp{b}.
+
+@node Backreferences
+@appendixsec Backreferences
+@cindex Perl-style regular expressions, backreferences
+
+Outside a character class, a backslash followed by a digit
+greater than 0 (and possibly further digits) is a back
+reference to a capturing subpattern earlier (i.e.  to its
+left) in the pattern, provided there have been that many
+previous capturing left parentheses.
+
+However, if the decimal number following the backslash is
+less than 10, it is always taken as a back reference, and
+causes an error only if there are not that many capturing
+left parentheses in the entire pattern. In other words, the
+parentheses that are referenced need not be to the left of
+the reference for numbers less than 10. @ref{Backslash}
+for further details of the handling of digits following a backslash.
+
+A back reference matches whatever actually matched the capturing
+subpattern in the current subject string, rather than
+anything matching the subpattern itself. So the pattern
+
+@example
+     (sens|respons)e and \1ibility
+@end example
+
+@noindent
+matches @samp{sense and sensibility} and @samp{response and responsibility},
+but not @samp{sense and responsibility}. If caseful
+matching is in force at the time of the back reference, the
+case of letters is relevant. For example,
+
+@example
+     ((?i)blah)\s+\1
+@end example
+
+@noindent
+matches @samp{blah blah} and @samp{Blah Blah}, but not
+@samp{BLAH blah}, even though the original capturing
+subpattern is matched caselessly.
+
+There may be more than one back reference to the same subpattern.
+Also, if a subpattern has not actually been used in a
+particular match, any back references to it always fail. For
+example, the pattern
+
+@example
+     (a|(bc))\2
+@end example
+
+@noindent
+always fails if it starts to match @samp{a} rather than
+@samp{bc}.  Because there may be up to 99 back references, all
+digits following the backslash are taken as part of a potential
+back reference number; this is different from what happens
+in @sc{posix} mode. If the pattern continues with a digit
+character, some delimiter must be used to terminate the back
+reference.  If the @code{X} modifier option is set, this can be
+whitespace.  Otherwise an empty comment can be used, or the
+following character can be expressed in hexadecimal or octal.
+
+A back reference that occurs inside the parentheses to which
+it refers fails when the subpattern is first used, so, for
+example, @code{(a\1)} never matches.  However, such references
+can be useful inside repeated subpatterns. For example, the
+pattern
+
+@example
+     (a|b\1)+
+@end example
+
+@noindent
+matches any number of @samp{a}s and also @samp{aba}, @samp{ababbaa},
+etc. At each iteration of the subpattern, the back reference matches
+the character string corresponding to the previous iteration.  In
+order for this to work, the pattern must be such that the first
+iteration does not need to match the back reference.  This can be
+done using alternation, as in the example above, or by a
+quantifier with a minimum of zero.
+
+@node Assertions
+@appendixsec Assertions
+@cindex Perl-style regular expressions, assertions
+@cindex Perl-style regular expressions, asserting subpatterns
+
+An assertion is a test on the characters following or
+preceding the current matching point that does not actually
+consume any characters. The simple assertions coded as @code{\b},
+@code{\B}, @code{\A}, @code{\Z}, @code{\z}, @code{^} and @code{$}
+are described above. More complicated assertions are coded as
+subpatterns.  There are two kinds: those that look ahead of the
+current position in the subject string, and those that look behind it.
+
+@cindex Perl-style regular expressions, lookahead subpatterns
+An assertion subpattern is matched in the normal way, except
+that it does not cause the current matching position to be
+changed. Lookahead assertions start with @code{(?=} for positive
+assertions and @code{(?!} for negative assertions. For example,
+
+@example
+     \w+(?=;)
+@end example
+
+@noindent
+matches a word followed by a semicolon, but does not include
+the semicolon in the match, and
+
+@example
+     foo(?!bar)
+@end example
+
+@noindent
+matches any occurrence of @samp{foo} that is not followed by
+@samp{bar}.
+
+Note that the apparently similar pattern
+
+@example
+     (?!foo)bar
+@end example
+
+@noindent
+@cindex Perl-style regular expressions, lookbehind subpatterns
+finds any occurrence of @samp{bar} even if it is preceded by
+@samp{foo}, because the assertion @code{(?!foo)} is always true
+when the next three characters are @samp{bar}. A lookbehind
+assertion is needed to achieve this effect.
+Lookbehind assertions start with @code{(?<=} for positive
+assertions and @code{(?<!} for negative assertions. So,
+
+@example
+     (?<!foo)bar
+@end example
+
+achieves the required effect of finding an occurrence of
+@samp{bar} that is not preceded by @samp{foo}. The contents of a
+lookbehind assertion are restricted
+such that all the strings it matches must have a fixed
+length.  However, if there are several alternatives, they do
+not all have to have the same fixed length.  This is an extension
+compared with Perl 5.005, which requires all branches to match
+the same length of string. Thus
+
+@example
+     (?<=dogs|cats|)
+@end example
+
+@noindent
+is permitted, but the apparently equivalent regular expression
+
+@example
+     (?<!dogs?|cats?)
+@end example
+
+@noindent
+causes an error at compile time. Branches that match different
+length strings are permitted only at the top level of
+a lookbehind assertion: an assertion such as
+
+@example
+     (?<=ab(c|de))
+@end example
+
+@noindent
+is not permitted, because its single top-level branch can
+match two different lengths, but it is acceptable if rewritten
+to use two top-level branches:
+
+@example
+     (?<=abc|abde)
+@end example
+
+All this is required because lookbehind assertions simply
+move the current position back by the alternative's fixed
+width and then try to match.  If there are
+insufficient characters before the current position, the
+match is deemed to fail.  Lookbehinds, in conjunction with
+non-backtracking subpatterns can be particularly useful for
+matching at the ends of strings; an example is given at the end
+of the section on non-backtracking subpatterns.
+
+Several assertions (of any sort) may occur in succession.
+For example,
+
+@example
+     (?<=\d@{3@})(?<!999)foo
+@end example
+
+@noindent
+matches @samp{foo} preceded by three digits that are not @samp{999}.
+Notice that each of the assertions is applied independently
+at the same point in the subject string. First there is a
+check that the previous three characters are all digits, and
+then there is a check that the same three characters are not
+@samp{999}.  This pattern does not match @samp{foo} preceded by six
+characters, the first of which are digits and the last three
+of which are not @samp{999}.  For example, it doesn't match
+@samp{123abcfoo}. A pattern to do that is
+
+@example
+     (?<=\d@{3@}...)(?<!999)foo
+@end example
+
+@noindent
+This time the first assertion looks at the preceding six
+characters, checking that the first three are digits, and
+then the second assertion checks that the preceding three
+characters are not @samp{999}.  Actually, assertions can be
+nested in any combination, so one can write this as 
+
+@example
+     (?<=\d@{3@}(?!999)...)foo
+@end example
+
+or
+
+@example
+     (?<=\d@{3@}...(?<!999))foo
+@end example
+
+@noindent
+both of which might be considered more readable.
+
+Assertion subpatterns are not capturing subpatterns, and may
+not be repeated, because it makes no sense to assert the
+same thing several times. If any kind of assertion contains
+capturing subpatterns within it, these are counted for the
+purposes of numbering the capturing subpatterns in the whole
+pattern.  However, substring capturing is carried out only
+for positive assertions, because it does not make sense for
+negative assertions.
+
+Assertions count towards the maximum of 200 parenthesized
+subpatterns.
+
+@node Non-backtracking subpatterns
+@appendixsec Non-backtracking subpatterns
+@cindex Perl-style regular expressions, non-backtracking subpatterns
+
+With both maximizing and minimizing repetition, failure of
+what follows normally causes the repeated item to be evaluated
+again to see if a different number of repeats allows the
+rest of the pattern to match. Sometimes it is useful to
+prevent this, either to change the nature of the match, or
+to cause it fail earlier than it otherwise might, when the
+author of the pattern knows there is no point in carrying
+on.
+
+Consider, for example, the pattern @code{\d+foo} when applied to
+the subject line
+
+@example
+     123456bar
+@end example
+
+After matching all 6 digits and then failing to match @samp{foo},
+the normal action of the matcher is to try again with only 5
+digits matching the @code{\d+} item, and then with 4, and so on,
+before ultimately failing. Non-backtracking subpatterns
+provide the means for specifying that once a portion of the
+pattern has matched, it is not to be re-evaluated in this way,
+so the matcher would give up immediately on failing to match
+@samp{foo} the first time.  The notation is another kind of special
+parenthesis, starting with @code{(?>} as in this example:
+
+@example
+     (?>\d+)bar
+@end example
+
+This kind of parenthesis ``locks up'' the part of the pattern
+it contains once it has matched, and a failure further into
+the pattern is prevented from backtracking into it.
+Backtracking past it to previous items, however, works as
+normal.
+
+Non-backtracking subpatterns are not capturing subpatterns.  Simple
+cases such as the above example can be thought of as a maximizing
+repeat that must swallow everything it can.  So,
+while both @code{\d+} and @code{\d+?} are prepared to adjust the number of
+digits they match in order to make the rest of the pattern
+match, @code{(?>\d+)} can only match an entire sequence of digits.
+
+This construction can of course contain arbitrarily complicated
+subpatterns, and it can be nested.
+
+@cindex Perl-style regular expressions, lookbehind subpatterns
+Non-backtracking subpatterns can be used in conjunction with look-behind
+assertions to specify efficient matching at the end
+of the subject string. Consider a simple pattern such as
+
+@example
+     abcd$
+@end example
+
+@noindent
+when applied to a long string which does not match.  Because
+matching proceeds from left to right, @command{sed} will look for
+each @samp{a} in the subject and then see if what follows matches
+the rest of the pattern. If the pattern is specified as
+
+@example
+     ^.*abcd$
+@end example
+
+@noindent
+the initial @code{.*} matches the entire string at first, but when
+this fails (because there is no following @samp{a}), it backtracks
+to match all but the last character, then all but the
+last two characters, and so on. Once again the search for
+@samp{a} covers the entire string, from right to left, so we are
+no better off. However, if the pattern is written as
+
+@example
+     ^(?>.*)(?<=abcd)
+@end example
+
+there can be no backtracking for the .* item; it can match
+only the entire string. The subsequent lookbehind assertion
+does a single test on the last four characters. If it fails,
+the match fails immediately. For long strings, this approach
+makes a significant difference to the processing time.
+
+When a pattern contains an unlimited repeat inside a subpattern
+that can itself be repeated an unlimited number of
+times, the use of a once-only subpattern is the only way to
+avoid some failing matches taking a very long time
+indeed.@footnote{Actually, the matcher embedded in @value{SSED}
+    tries to do something for this in the simplest cases,
+    like @code{([^b]*b)*}.  These cases are actually quite
+    common: they happen for example in a regular expression
+    like @code{\/\*([^*]*\*)*\/} which matches C comments.}
+
+The pattern
+
+@example
+     (\D+|<\d+>)*[!?]
+@end example
+
+([^0-9<]+<(\d+>)?)*[!?]
+
+@noindent
+matches an unlimited number of substrings that either consist
+of non-digits, or digits enclosed in angular brackets, followed by
+an exclamation or question mark. When it matches, it runs quickly.
+However, if it is applied to
+
+@example
+     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+@end example
+
+@noindent
+it takes a long time before reporting failure.  This is
+because the string can be divided between the two repeats in
+a large number of ways, and all have to be tried.@footnote{The
+example used @code{[!?]} rather than a single character at the end,
+because both @value{SSED} and Perl have an optimization that allows
+for fast failure when a single character is used. They
+remember the last single character that is required for a
+match, and fail early if it is not present in the string.}
+
+If the pattern is changed to
+
+@example
+     ((?>\D+)|<\d+>)*[!?]
+@end example
+
+sequences of non-digits cannot be broken, and failure happens
+quickly.
+
+@node Conditional subpatterns
+@appendixsec Conditional subpatterns
+@cindex Perl-style regular expressions, conditional subpatterns
+
+It is possible to cause the matching process to obey a subpattern
+conditionally or to choose between two alternative
+subpatterns, depending on the result of an assertion, or
+whether a previous capturing subpattern matched or not. The
+two possible forms of conditional subpattern are
+
+@example
+     (?(@var{condition})@var{yes-pattern})
+     (?(@var{condition})@var{yes-pattern}|@var{no-pattern})
+@end example
+
+If the condition is satisfied, the yes-pattern is used; otherwise
+the no-pattern (if present) is used. If there are more than two
+alternatives in the subpattern, a compile-time error occurs.
+
+There are two kinds of condition. If the text between the
+parentheses consists of a sequence of digits, the condition
+is satisfied if the capturing subpattern of that number has
+previously matched.  The number must be greater than zero.
+Consider the following pattern, which contains non-significant
+white space to make it more readable (assume the @code{X} modifier)
+and to divide it into three parts for ease of discussion:
+
+@example
+     ( \( )?   [^()]+   (?(1) \) )
+@end example
+
+The first part matches an optional opening parenthesis, and
+if that character is present, sets it as the first captured
+substring. The second part matches one or more characters
+that are not parentheses. The third part is a conditional
+subpattern that tests whether the first set of parentheses
+matched or not.  If they did, that is, if subject started
+with an opening parenthesis, the condition is true, and so
+the yes-pattern is executed and a closing parenthesis is
+required. Otherwise, since no-pattern is not present, the
+subpattern matches nothing.  In other words, this pattern
+matches a sequence of non-parentheses, optionally enclosed
+in parentheses.
+
+@cindex Perl-style regular expressions, lookahead subpatterns
+If the condition is not a sequence of digits, it must be an
+assertion.  This may be a positive or negative lookahead or
+lookbehind assertion. Consider this pattern, again containing
+non-significant white space, and with the two alternatives
+on the second line:
+
+@example
+     (?(?=...[a-z])
+        \d\d-[a-z]@{3@}-\d\d |
+        \d\d-\d\d-\d\d )
+@end example
+
+The condition is a positive lookahead assertion that matches
+a letter that is three characters away from the current point.
+If a letter is found, the subject is matched against the first
+alternative @samp{@var{dd}-@var{aaa}-@var{dd}} (where @var{aaa} are
+letters and @var{dd} are digits); otherwise it is matched against 
+the second alternative, @samp{@var{dd}-@var{dd}-@var{dd}}.
+
+
+@node Recursive patterns
+@appendixsec Recursive patterns
+@cindex Perl-style regular expressions, recursive patterns
+@cindex Perl-style regular expressions, recursion
+
+Consider the problem of matching a string in parentheses,
+allowing for unlimited nested parentheses. Without the use
+of recursion, the best that can be done is to use a pattern
+that matches up to some fixed depth of nesting. It is not
+possible to handle an arbitrary nesting depth. Perl 5.6 has
+provided an experimental facility that allows regular
+expressions to recurse (amongst other things). It does this
+by interpolating Perl code in the expression at run time,
+and the code can refer to the expression itself. A Perl pattern
+tern to solve the parentheses problem can be created like
+this:
+
+@example
+     $re = qr@{\( (?: (?>[^()]+) | (?p@{$re@}) )* \)@}x;
+@end example
+
+The @code{(?p@{...@})} item interpolates Perl code at run time,
+and in this case refers recursively to the pattern in which it
+appears. Obviously, @command{sed} cannot support the interpolation of
+Perl code.  Instead, the special item @code{(?R)} is provided for
+the specific case of recursion. This pattern solves the
+parentheses problem (assume the @code{X} modifier option is used
+so that white space is ignored):
+
+@example
+     \( ( (?>[^()]+) | (?R) )* \)
+@end example
+
+First it matches an opening parenthesis. Then it matches any
+number of substrings which can either be a sequence of
+non-parentheses, or a recursive match of the pattern itself
+(i.e. a correctly parenthesized substring). Finally there is
+a closing parenthesis.
+
+This particular example pattern contains nested unlimited
+repeats, and so the use of a non-backtracking subpattern for
+matching strings of non-parentheses is important when applying
+the pattern to strings that do not match. For example, when
+it is applied to
+
+@example
+     (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()
+@end example
+
+it yields a ``no match'' response quickly. However, if a
+standard backtracking subpattern is not used, the match runs
+for a very long time indeed because there are so many different
+ways the @code{+} and @code{*} repeats can carve up the subject,
+and all have to be tested before failure can be reported.
+
+The values set for any capturing subpatterns are those from
+the outermost level of the recursion at which the subpattern
+value is set. If the pattern above is matched against
+
+@example
+     (ab(cd)ef)
+@end example
+
+@noindent
+the value for the capturing parentheses is @samp{ef}, which is
+the last value taken on at the top level.
+
+@node Comments
+@appendixsec Comments
+@cindex Perl-style regular expressions, comments
+
+The sequence (?# marks the start of a comment which continues
+ues up to the next closing parenthesis. Nested parentheses
+are not permitted. The characters that make up a comment
+play no part in the pattern matching at all.
+
+@cindex Perl-style regular expressions, extended
+If the @code{X} modifier option is used, an unescaped @code{#} character
+outside a character class introduces a comment that continues
+up to the next newline character in the pattern.
+@end ifset
+
+
+@page
+@node Concept Index
+@unnumbered Concept Index
+
+This is a general index of all issues discussed in this manual, with the
+exception of the @command{sed} commands and command-line options.
+
+@printindex cp
+
+@page
+@node Command and Option Index
+@unnumbered Command and Option Index
+
+This is an alphabetical list of all @command{sed} commands and command-line
+options.
+
+@printindex fn
+
+@contents
+@bye
+
+@c XXX FIXME: the term "cycle" is never defined...
diff --git a/src/sed/doc/sed.1 b/src/sed/doc/sed.1
new file mode 100644
index 0000000..b4e5077
--- /dev/null
+++ b/src/sed/doc/sed.1
@@ -0,0 +1,374 @@
+.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.28.
+.TH SED "1" "February 2006" "sed version 4.1.4" "User Commands"
+.SH NAME
+sed \- stream editor for filtering and transforming text
+.SH SYNOPSIS
+.B sed
+[\fIOPTION\fR]... \fI{script-only-if-no-other-script} \fR[\fIinput-file\fR]...
+.SH DESCRIPTION
+.ds sd \fIsed\fP
+.ds Sd \fISed\fP
+\*(Sd is a stream editor.
+A stream editor is used to perform basic text
+transformations on an input stream
+(a file or input from a pipeline).
+While in some ways similar to an editor which
+permits scripted edits (such as \fIed\fP),
+\*(sd works by making only one pass over the
+input(s), and is consequently more efficient.
+But it is \*(sd's ability to filter text in a pipeline
+which particularly distinguishes it from other types of
+editors.
+.HP
+\fB\-n\fR, \fB\-\-quiet\fR, \fB\-\-silent\fR
+.IP
+suppress automatic printing of pattern space
+.HP
+\fB\-e\fR script, \fB\-\-expression\fR=\fIscript\fR
+.IP
+add the script to the commands to be executed
+.HP
+\fB\-f\fR script-file, \fB\-\-file\fR=\fIscript\-file\fR
+.IP
+add the contents of script-file to the commands to be executed
+.HP
+\fB\-i[SUFFIX]\fR, \fB\-\-in\-place\fR[=\fISUFFIX\fR]
+.IP
+edit files in place (makes backup if extension supplied)
+.HP
+\fB\-l\fR N, \fB\-\-line\-length\fR=\fIN\fR
+.IP
+specify the desired line-wrap length for the `l' command
+.HP
+\fB\-\-posix\fR
+.IP
+disable all GNU extensions.
+.HP
+\fB\-r\fR, \fB\-\-regexp\-extended\fR
+.IP
+use extended regular expressions in the script.
+.HP
+\fB\-s\fR, \fB\-\-separate\fR
+.IP
+consider files as separate rather than as a single continuous
+long stream.
+.HP
+\fB\-u\fR, \fB\-\-unbuffered\fR
+.IP
+load minimal amounts of data from the input files and flush
+the output buffers more often
+.TP
+\fB\-\-help\fR
+display this help and exit
+.TP
+\fB\-\-version\fR
+output version information and exit
+.PP
+If no \fB\-e\fR, \fB\-\-expression\fR, \fB\-f\fR, or \fB\-\-file\fR option is given, then the first
+non-option argument is taken as the sed script to interpret.  All
+remaining arguments are names of input files; if no input files are
+specified, then the standard input is read.
+.PP
+E-mail bug reports to: bonzini@gnu.org .
+Be sure to include the word ``sed'' somewhere in the ``Subject:'' field.
+.SH "COMMAND SYNOPSIS"
+This is just a brief synopsis of \*(sd commands to serve as
+a reminder to those who already know \*(sd;
+other documentation (such as the texinfo document)
+must be consulted for fuller descriptions.
+.SS
+Zero-address ``commands''
+.TP
+.RI :\  label
+Label for
+.B b
+and
+.B t
+commands.
+.TP
+.RI # comment
+The comment extends until the next newline (or the end of a
+.B -e
+script fragment).
+.TP
+}
+The closing bracket of a { } block.
+.SS
+Zero- or One- address commands
+.TP
+=
+Print the current line number.
+.TP
+a \e
+.TP
+.I text
+Append
+.IR text ,
+which has each embedded newline preceded by a backslash.
+.TP
+i \e
+.TP
+.I text
+Insert
+.IR text ,
+which has each embedded newline preceded by a backslash.
+.TP
+q
+Immediately quit the \*(sd script without processing
+any more input,
+except that if auto-print is not disabled
+the current pattern space will be printed.
+.TP
+Q
+Immediately quit the \*(sd script without processing
+any more input.
+.TP
+.RI r\  filename
+Append text read from
+.IR filename .
+.TP
+.RI R\  filename
+Append a line read from
+.IR filename .
+.SS
+Commands which accept address ranges
+.TP
+{
+Begin a block of commands (end with a }).
+.TP
+.RI b\  label
+Branch to
+.IR label ;
+if
+.I label
+is omitted, branch to end of script.
+.TP
+.RI t\  label
+If a s/// has done a successful substitution since the
+last input line was read and since the last t or T
+command, then branch to
+.IR label ;
+if
+.I label
+is omitted, branch to end of script.
+.TP
+.RI T\  label
+If no s/// has done a successful substitution since the
+last input line was read and since the last t or T
+command, then branch to
+.IR label ;
+if
+.I label
+is omitted, branch to end of script.
+.TP
+c \e
+.TP
+.I text
+Replace the selected lines with
+.IR text ,
+which has each embedded newline preceded by a backslash.
+.TP
+d
+Delete pattern space.
+Start next cycle.
+.TP
+D
+Delete up to the first embedded newline in the pattern space.
+Start next cycle, but skip reading from the input
+if there is still data in the pattern space.
+.TP
+h H
+Copy/append pattern space to hold space.
+.TP
+g G
+Copy/append hold space to pattern space.
+.TP
+x
+Exchange the contents of the hold and pattern spaces.
+.TP
+l
+List out the current line in a ``visually unambiguous'' form.
+.TP
+n N
+Read/append the next line of input into the pattern space.
+.TP
+p
+Print the current pattern space.
+.TP
+P
+Print up to the first embedded newline of the current pattern space.
+.TP
+.RI s/ regexp / replacement /
+Attempt to match
+.I regexp
+against the pattern space.
+If successful, replace that portion matched
+with
+.IR replacement .
+The
+.I replacement
+may contain the special character
+.B &
+to refer to that portion of the pattern space which matched,
+and the special escapes \e1 through \e9 to refer to the
+corresponding matching sub-expressions in the
+.IR regexp .
+.TP
+.RI w\  filename
+Write the current pattern space to
+.IR filename .
+.TP
+.RI W\  filename
+Write the first line of the current pattern space to
+.IR filename .
+.TP
+.RI y/ source / dest /
+Transliterate the characters in the pattern space which appear in
+.I source
+to the corresponding character in
+.IR dest .
+.SH
+Addresses
+\*(Sd commands can be given with no addresses, in which
+case the command will be executed for all input lines;
+with one address, in which case the command will only be executed
+for input lines which match that address; or with two
+addresses, in which case the command will be executed
+for all input lines which match the inclusive range of
+lines starting from the first address and continuing to
+the second address.
+Three things to note about address ranges:
+the syntax is
+.IR addr1 , addr2
+(i.e., the addresses are separated by a comma);
+the line which
+.I addr1
+matched will always be accepted,
+even if
+.I addr2
+selects an earlier line;
+and if
+.I addr2
+is a
+.IR regexp ,
+it will not be tested against the line that
+.I addr1
+matched.
+.PP
+After the address (or address-range),
+and before the command, a
+.B !
+may be inserted,
+which specifies that the command shall only be
+executed if the address (or address-range) does
+.B not
+match.
+.PP
+The following address types are supported:
+.TP
+.I number
+Match only the specified line
+.IR number .
+.TP
+.IR first ~ step
+Match every
+.IR step 'th
+line starting with line
+.IR first .
+For example, ``sed -n 1~2p'' will print all the odd-numbered lines in
+the input stream, and the address 2~5 will match every fifth line,
+starting with the second. (This is an extension.)
+.TP
+$
+Match the last line.
+.TP
+.RI / regexp /
+Match lines matching the regular expression
+.IR regexp .
+.TP
+.BI \fR\e\fPc regexp c
+Match lines matching the regular expression
+.IR regexp .
+The
+.B c
+may be any character.
+.PP
+GNU \*(sd also supports some special 2-address forms:
+.TP
+.RI 0, addr2
+Start out in "matched first address" state, until
+.I addr2
+is found.
+This is similar to
+.RI 1, addr2 ,
+except that if
+.I addr2
+matches the very first line of input the
+.RI 0, addr2
+form will be at the end of its range, whereas the
+.RI 1, addr2
+form will still be at the beginning of its range.
+.TP
+.IR addr1 ,+ N
+Will match
+.I addr1
+and the
+.I N
+lines following
+.IR addr1 .
+.TP
+.IR addr1 ,~ N
+Will match
+.I addr1
+and the lines following
+.I addr1
+until the next line whose input line number is a multiple of
+.IR N .
+.SH "REGULAR EXPRESSIONS"
+POSIX.2 BREs
+.I should
+be supported, but they aren't completely because of performance
+problems.
+The
+.B \en
+sequence in a regular expression matches the newline character,
+and similarly for
+.BR \ea ,
+.BR \et ,
+and other sequences.
+.SH BUGS
+.PP
+E-mail bug reports to
+.BR bonzini@gnu.org .
+Be sure to include the word ``sed'' somewhere in the ``Subject:'' field.
+Also, please include the output of ``sed --version'' in the body
+of your report if at all possible.
+.SH COPYRIGHT
+Copyright \(co 2003 Free Software Foundation, Inc.
+.br
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,
+to the extent permitted by law.
+.SH "SEE ALSO"
+.BR awk (1),
+.BR ed (1),
+.BR grep (1),
+.BR tr (1),
+.BR perlre (1),
+sed.info,
+any of various books on \*(sd,
+.na
+the \*(sd FAQ (http://sed.sf.net/grabbag/tutorials/sedfaq.txt),
+http://sed.sf.net/grabbag/.
+.PP
+The full documentation for
+.B sed
+is maintained as a Texinfo manual.  If the
+.B info
+and
+.B sed
+programs are properly installed at your site, the command
+.IP
+.B info sed
+.PP
+should give you access to the complete manual.
diff --git a/src/sed/doc/sed.info b/src/sed/doc/sed.info
new file mode 100644
index 0000000..2e0b20c
--- /dev/null
+++ b/src/sed/doc/sed.info
@@ -0,0 +1,81 @@
+This is ../../doc/sed.info, produced by makeinfo version 4.5 from
+../../doc/sed.texi.
+
+INFO-DIR-SECTION Text creation and manipulation
+START-INFO-DIR-ENTRY
+* sed: (sed).                   Stream EDitor.
+
+END-INFO-DIR-ENTRY
+
+This file documents version 4.1.5 of GNU `sed', a stream editor.
+
+   Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004 Free Software
+Foundation, Inc.
+
+   This document is released under the terms of the GNU Free
+Documentation License as published by the Free Software Foundation;
+either version 1.1, or (at your option) any later version.
+
+   You should have received a copy of the GNU Free Documentation
+License along with GNU `sed'; see the file `COPYING.DOC'.  If not,
+write to the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02110-1301, USA.
+
+   There are no Cover Texts and no Invariant Sections; this text, along
+with its equivalent in the printed manual, constitutes the Title Page.
+
+Indirect:
+sed.info-1: 935
+sed.info-2: 50405
+
+Tag Table:
+(Indirect)
+Node: Top935
+Node: Introduction3816
+Node: Invoking sed4370
+Ref: Invoking sed-Footnote-19396
+Ref: Invoking sed-Footnote-29588
+Node: sed Programs9691
+Node: Execution Cycle10838
+Ref: Execution Cycle-Footnote-112011
+Node: Addresses12322
+Node: Regular Expressions17061
+Node: Common Commands24610
+Node: The "s" Command26608
+Ref: The "s" Command-Footnote-130940
+Node: Other Commands31012
+Ref: Other Commands-Footnote-136149
+Node: Programming Commands36221
+Node: Extended Commands37130
+Node: Escapes40705
+Ref: Escapes-Footnote-143711
+Node: Examples43902
+Node: Centering lines44997
+Node: Increment a number45909
+Ref: Increment a number-Footnote-147489
+Node: Rename files to lower case47609
+Node: Print bash environment50405
+Node: Reverse chars of lines51185
+Ref: Reverse chars of lines-Footnote-152202
+Node: tac52424
+Node: cat -n53206
+Node: cat -b55063
+Node: wc -c55815
+Ref: wc -c-Footnote-157748
+Node: wc -w57817
+Node: wc -l59289
+Node: head59526
+Node: tail59850
+Node: uniq61534
+Node: uniq -d62330
+Node: uniq -u63054
+Node: cat -s63778
+Node: Limitations65667
+Node: Other Resources66507
+Node: Reporting Bugs67433
+Ref: Reporting Bugs-Footnote-173962
+Node: Extended regexps74033
+Node: Concept Index75200
+Node: Command and Option Index85215
+
+End Tag Table
diff --git a/src/sed/doc/sed.info-1 b/src/sed/doc/sed.info-1
new file mode 100644
index 0000000..dce6cf1
--- /dev/null
+++ b/src/sed/doc/sed.info-1
@@ -0,0 +1,1353 @@
+This is ../../doc/sed.info, produced by makeinfo version 4.5 from
+../../doc/sed.texi.
+
+INFO-DIR-SECTION Text creation and manipulation
+START-INFO-DIR-ENTRY
+* sed: (sed).                   Stream EDitor.
+
+END-INFO-DIR-ENTRY
+
+This file documents version 4.1.5 of GNU `sed', a stream editor.
+
+   Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004 Free Software
+Foundation, Inc.
+
+   This document is released under the terms of the GNU Free
+Documentation License as published by the Free Software Foundation;
+either version 1.1, or (at your option) any later version.
+
+   You should have received a copy of the GNU Free Documentation
+License along with GNU `sed'; see the file `COPYING.DOC'.  If not,
+write to the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02110-1301, USA.
+
+   There are no Cover Texts and no Invariant Sections; this text, along
+with its equivalent in the printed manual, constitutes the Title Page.
+
+File: sed.info,  Node: Top,  Next: Introduction,  Up: (dir)
+
+
+
+This file documents version 4.1.5 of GNU `sed', a stream editor.
+
+   Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004 Free Software
+Foundation, Inc.
+
+   This document is released under the terms of the GNU Free
+Documentation License as published by the Free Software Foundation;
+either version 1.1, or (at your option) any later version.
+
+   You should have received a copy of the GNU Free Documentation
+License along with GNU `sed'; see the file `COPYING.DOC'.  If not,
+write to the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02110-1301, USA.
+
+   There are no Cover Texts and no Invariant Sections; this text, along
+with its equivalent in the printed manual, constitutes the Title Page.
+* Menu:
+
+* Introduction::               Introduction
+* Invoking sed::               Invocation
+* sed Programs::               `sed' programs
+* Examples::                   Some sample scripts
+* Limitations::                Limitations and (non-)limitations of GNU `sed'
+* Other Resources::            Other resources for learning about `sed'
+* Reporting Bugs::             Reporting bugs
+
+* Extended regexps::           `egrep'-style regular expressions
+
+* Concept Index::              A menu with all the topics in this manual.
+* Command and Option Index::   A menu with all `sed' commands and
+                               command-line options.
+
+--- The detailed node listing ---
+
+sed Programs:
+* Execution Cycle::                 How `sed' works
+* Addresses::                       Selecting lines with `sed'
+* Regular Expressions::             Overview of regular expression syntax
+* Common Commands::                 Often used commands
+* The "s" Command::                 `sed''s Swiss Army Knife
+* Other Commands::                  Less frequently used commands
+* Programming Commands::            Commands for `sed' gurus
+* Extended Commands::               Commands specific of GNU `sed'
+* Escapes::                         Specifying special characters
+
+Examples:
+* Centering lines::
+* Increment a number::
+* Rename files to lower case::
+* Print bash environment::
+* Reverse chars of lines::
+* tac::                             Reverse lines of files
+* cat -n::                          Numbering lines
+* cat -b::                          Numbering non-blank lines
+* wc -c::                           Counting chars
+* wc -w::                           Counting words
+* wc -l::                           Counting lines
+* head::                            Printing the first lines
+* tail::                            Printing the last lines
+* uniq::                            Make duplicate lines unique
+* uniq -d::                         Print duplicated lines of input
+* uniq -u::                         Remove all duplicated lines
+* cat -s::                          Squeezing blank lines
+
+
+File: sed.info,  Node: Introduction,  Next: Invoking sed,  Prev: Top,  Up: Top
+
+Introduction
+************
+
+   `sed' is a stream editor.  A stream editor is used to perform basic
+text transformations on an input stream (a file or input from a
+pipeline).  While in some ways similar to an editor which permits
+scripted edits (such as `ed'), `sed' works by making only one pass over
+the input(s), and is consequently more efficient.  But it is `sed''s
+ability to filter text in a pipeline which particularly distinguishes
+it from other types of editors.
+
+
+File: sed.info,  Node: Invoking sed,  Next: sed Programs,  Prev: Introduction,  Up: Top
+
+Invocation
+**********
+
+   Normally `sed' is invoked like this:
+
+     sed SCRIPT INPUTFILE...
+
+   The full format for invoking `sed' is:
+
+     sed OPTIONS... [SCRIPT] [INPUTFILE...]
+
+   If you do not specify INPUTFILE, or if INPUTFILE is `-', `sed'
+filters the contents of the standard input.  The SCRIPT is actually the
+first non-option parameter, which `sed' specially considers a script
+and not an input file if (and only if) none of the other OPTIONS
+specifies a script to be executed, that is if neither of the `-e' and
+`-f' options is specified.
+
+   `sed' may be invoked with the following command-line options:
+
+`--version'
+     Print out the version of `sed' that is being run and a copyright
+     notice, then exit.
+
+`--help'
+     Print a usage message briefly summarizing these command-line
+     options and the bug-reporting address, then exit.
+
+`-n'
+`--quiet'
+`--silent'
+     By default, `sed' prints out the pattern space at the end of each
+     cycle through the script.  These options disable this automatic
+     printing, and `sed' only produces output when explicitly told to
+     via the `p' command.
+
+`-i[SUFFIX]'
+`--in-place[=SUFFIX]'
+     This option specifies that files are to be edited in-place.  GNU
+     `sed' does this by creating a temporary file and sending output to
+     this file rather than to the standard output.(1).
+
+     This option implies `-s'.
+
+     When the end of the file is reached, the temporary file is renamed
+     to the output file's original name.  The extension, if supplied,
+     is used to modify the name of the old file before renaming the
+     temporary file, thereby making a backup copy(2)).
+
+     This rule is followed: if the extension doesn't contain a `*',
+     then it is appended to the end of the current filename as a
+     suffix; if the extension does contain one or more `*' characters,
+     then _each_ asterisk is replaced with the current filename.  This
+     allows you to add a prefix to the backup file, instead of (or in
+     addition to) a suffix, or even to place backup copies of the
+     original files into another directory (provided the directory
+     already exists).
+
+     If no extension is supplied, the original file is overwritten
+     without making a backup.
+
+`-l N'
+`--line-length=N'
+     Specify the default line-wrap length for the `l' command.  A
+     length of 0 (zero) means to never wrap long lines.  If not
+     specified, it is taken to be 70.
+
+`--posix'
+     GNU `sed' includes several extensions to POSIX sed.  In order to
+     simplify writing portable scripts, this option disables all the
+     extensions that this manual documents, including additional
+     commands.  Most of the extensions accept `sed' programs that are
+     outside the syntax mandated by POSIX, but some of them (such as
+     the behavior of the `N' command described in *note Reporting
+     Bugs::) actually violate the standard.  If you want to disable
+     only the latter kind of extension, you can set the
+     `POSIXLY_CORRECT' variable to a non-empty value.
+
+`-r'
+`--regexp-extended'
+     Use extended regular expressions rather than basic regular
+     expressions.  Extended regexps are those that `egrep' accepts;
+     they can be clearer because they usually have less backslashes,
+     but are a GNU extension and hence scripts that use them are not
+     portable.  *Note Extended regular expressions: Extended regexps.
+
+`-s'
+`--separate'
+     By default, `sed' will consider the files specified on the command
+     line as a single continuous long stream.  This GNU `sed' extension
+     allows the user to consider them as separate files: range
+     addresses (such as `/abc/,/def/') are not allowed to span several
+     files, line numbers are relative to the start of each file, `$'
+     refers to the last line of each file, and files invoked from the
+     `R' commands are rewound at the start of each file.
+
+`-u'
+`--unbuffered'
+     Buffer both input and output as minimally as practical.  (This is
+     particularly useful if the input is coming from the likes of `tail
+     -f', and you wish to see the transformed output as soon as
+     possible.)
+
+`-e SCRIPT'
+`--expression=SCRIPT'
+     Add the commands in SCRIPT to the set of commands to be run while
+     processing the input.
+
+`-f SCRIPT-FILE'
+`--file=SCRIPT-FILE'
+     Add the commands contained in the file SCRIPT-FILE to the set of
+     commands to be run while processing the input.
+
+
+   If no `-e', `-f', `--expression', or `--file' options are given on
+the command-line, then the first non-option argument on the command
+line is taken to be the SCRIPT to be executed.
+
+   If any command-line parameters remain after processing the above,
+these parameters are interpreted as the names of input files to be
+processed.  A file name of `-' refers to the standard input stream.
+The standard input will be processed if no file names are specified.
+
+   ---------- Footnotes ----------
+
+   (1) This applies to commands such as `=', `a', `c', `i', `l', `p'.
+You can still write to the standard output by using the `w' or `W'
+commands together with the `/dev/stdout' special file
+
+   (2) Note that GNU `sed' creates the backup     file whether or not
+any output is actually changed.
+
+
+File: sed.info,  Node: sed Programs,  Next: Examples,  Prev: Invoking sed,  Up: Top
+
+`sed' Programs
+**************
+
+   A `sed' program consists of one or more `sed' commands, passed in by
+one or more of the `-e', `-f', `--expression', and `--file' options, or
+the first non-option argument if zero of these options are used.  This
+document will refer to "the" `sed' script; this is understood to mean
+the in-order catenation of all of the SCRIPTs and SCRIPT-FILEs passed
+in.
+
+   Each `sed' command consists of an optional address or address range,
+followed by a one-character command name and any additional
+command-specific code.
+
+* Menu:
+
+* Execution Cycle::          How `sed' works
+* Addresses::                Selecting lines with `sed'
+* Regular Expressions::      Overview of regular expression syntax
+* Common Commands::          Often used commands
+* The "s" Command::          `sed''s Swiss Army Knife
+* Other Commands::           Less frequently used commands
+* Programming Commands::     Commands for `sed' gurus
+* Extended Commands::        Commands specific of GNU `sed'
+* Escapes::                  Specifying special characters
+
+
+File: sed.info,  Node: Execution Cycle,  Next: Addresses,  Up: sed Programs
+
+How `sed' Works
+===============
+
+   `sed' maintains two data buffers: the active _pattern_ space, and
+the auxiliary _hold_ space. Both are initially empty.
+
+   `sed' operates by performing the following cycle on each lines of
+input: first, `sed' reads one line from the input stream, removes any
+trailing newline, and places it in the pattern space.  Then commands
+are executed; each command can have an address associated to it:
+addresses are a kind of condition code, and a command is only executed
+if the condition is verified before the command is to be executed.
+
+   When the end of the script is reached, unless the `-n' option is in
+use, the contents of pattern space are printed out to the output
+stream, adding back the trailing newline if it was removed.(1) Then the
+next cycle starts for the next input line.
+
+   Unless special commands (like `D') are used, the pattern space is
+deleted between two cycles. The hold space, on the other hand, keeps
+its data between cycles (see commands `h', `H', `x', `g', `G' to move
+data between both buffers).
+
+   ---------- Footnotes ----------
+
+   (1) Actually,   if `sed' prints a line without the terminating
+newline, it will   nevertheless print the missing newline as soon as
+more text is sent to   the same output stream, which gives the "least
+expected surprise"   even though it does not make commands like `sed -n
+p' exactly   identical to `cat'.
+
+
+File: sed.info,  Node: Addresses,  Next: Regular Expressions,  Prev: Execution Cycle,  Up: sed Programs
+
+Selecting lines with `sed'
+==========================
+
+   Addresses in a `sed' script can be in any of the following forms:
+`NUMBER'
+     Specifying a line number will match only that line in the input.
+     (Note that `sed' counts lines continuously across all input files
+     unless `-i' or `-s' options are specified.)
+
+`FIRST~STEP'
+     This GNU extension matches every STEPth line starting with line
+     FIRST.  In particular, lines will be selected when there exists a
+     non-negative N such that the current line-number equals FIRST + (N
+     * STEP).  Thus, to select the odd-numbered lines, one would use
+     `1~2'; to pick every third line starting with the second, `2~3'
+     would be used; to pick every fifth line starting with the tenth,
+     use `10~5'; and `50~0' is just an obscure way of saying `50'.
+
+`$'
+     This address matches the last line of the last file of input, or
+     the last line of each file when the `-i' or `-s' options are
+     specified.
+
+`/REGEXP/'
+     This will select any line which matches the regular expression
+     REGEXP.  If REGEXP itself includes any `/' characters, each must
+     be escaped by a backslash (`\').
+
+     The empty regular expression `//' repeats the last regular
+     expression match (the same holds if the empty regular expression is
+     passed to the `s' command).  Note that modifiers to regular
+     expressions are evaluated when the regular expression is compiled,
+     thus it is invalid to specify them together with the empty regular
+     expression.
+
+`\%REGEXP%'
+     (The `%' may be replaced by any other single character.)
+
+     This also matches the regular expression REGEXP, but allows one to
+     use a different delimiter than `/'.  This is particularly useful
+     if the REGEXP itself contains a lot of slashes, since it avoids
+     the tedious escaping of every `/'.  If REGEXP itself includes any
+     delimiter characters, each must be escaped by a backslash (`\').
+
+`/REGEXP/I'
+`\%REGEXP%I'
+     The `I' modifier to regular-expression matching is a GNU extension
+     which causes the REGEXP to be matched in a case-insensitive manner.
+
+`/REGEXP/M'
+`\%REGEXP%M'
+     The `M' modifier to regular-expression matching is a GNU `sed'
+     extension which causes `^' and `$' to match respectively (in
+     addition to the normal behavior) the empty string after a newline,
+     and the empty string before a newline.  There are special character
+     sequences (`\`' and `\'') which always match the beginning or the
+     end of the buffer.  `M' stands for `multi-line'.
+
+
+   If no addresses are given, then all lines are matched; if one
+address is given, then only lines matching that address are matched.
+
+   An address range can be specified by specifying two addresses
+separated by a comma (`,').  An address range matches lines starting
+from where the first address matches, and continues until the second
+address matches (inclusively).
+
+   If the second address is a REGEXP, then checking for the ending
+match will start with the line _following_ the line which matched the
+first address: a range will always span at least two lines (except of
+course if the input stream ends).
+
+   If the second address is a NUMBER less than (or equal to) the line
+matching the first address, then only the one line is matched.
+
+   GNU `sed' also supports some special two-address forms; all these
+are GNU extensions:
+`0,/REGEXP/'
+     A line number of `0' can be used in an address specification like
+     `0,/REGEXP/' so that `sed' will try to match REGEXP in the first
+     input line too.  In other words, `0,/REGEXP/' is similar to
+     `1,/REGEXP/', except that if ADDR2 matches the very first line of
+     input the `0,/REGEXP/' form will consider it to end the range,
+     whereas the `1,/REGEXP/' form will match the beginning of its
+     range and hence make the range span up to the _second_ occurrence
+     of the regular expression.
+
+     Note that this is the only place where the `0' address makes
+     sense; there is no 0-th line and commands which are given the `0'
+     address in any other way will give an error.
+
+`ADDR1,+N'
+     Matches ADDR1 and the N lines following ADDR1.
+
+`ADDR1,~N'
+     Matches ADDR1 and the lines following ADDR1 until the next line
+     whose input line number is a multiple of N.
+
+   Appending the `!' character to the end of an address specification
+negates the sense of the match.  That is, if the `!' character follows
+an address range, then only lines which do _not_ match the address range
+will be selected.  This also works for singleton addresses, and,
+perhaps perversely, for the null address.
+
+
+File: sed.info,  Node: Regular Expressions,  Next: Common Commands,  Prev: Addresses,  Up: sed Programs
+
+Overview of Regular Expression Syntax
+=====================================
+
+   To know how to use `sed', people should understand regular
+expressions ("regexp" for short).  A regular expression is a pattern
+that is matched against a subject string from left to right.  Most
+characters are "ordinary": they stand for themselves in a pattern, and
+match the corresponding characters in the subject.  As a trivial
+example, the pattern
+
+          The quick brown fox
+
+matches a portion of a subject string that is identical to itself.  The
+power of regular expressions comes from the ability to include
+alternatives and repetitions in the pattern.  These are encoded in the
+pattern by the use of "special characters", which do not stand for
+themselves but instead are interpreted in some special way.  Here is a
+brief description of regular expression syntax as used in `sed'.
+
+`CHAR'
+     A single ordinary character matches itself.
+
+`*'
+     Matches a sequence of zero or more instances of matches for the
+     preceding regular expression, which must be an ordinary character,
+     a special character preceded by `\', a `.', a grouped regexp (see
+     below), or a bracket expression.  As a GNU extension, a postfixed
+     regular expression can also be followed by `*'; for example, `a**'
+     is equivalent to `a*'.  POSIX 1003.1-2001 says that `*' stands for
+     itself when it appears at the start of a regular expression or
+     subexpression, but many nonGNU implementations do not support this
+     and portable scripts should instead use `\*' in these contexts.
+
+`\+'
+     As `*', but matches one or more.  It is a GNU extension.
+
+`\?'
+     As `*', but only matches zero or one.  It is a GNU extension.
+
+`\{I\}'
+     As `*', but matches exactly I sequences (I is a decimal integer;
+     for portability, keep it between 0 and 255 inclusive).
+
+`\{I,J\}'
+     Matches between I and J, inclusive, sequences.
+
+`\{I,\}'
+     Matches more than or equal to I sequences.
+
+`\(REGEXP\)'
+     Groups the inner REGEXP as a whole, this is used to:
+
+        * Apply postfix operators, like `\(abcd\)*': this will search
+          for zero or more whole sequences of `abcd', while `abcd*'
+          would search for `abc' followed by zero or more occurrences
+          of `d'.  Note that support for `\(abcd\)*' is required by
+          POSIX 1003.1-2001, but many non-GNU implementations do not
+          support it and hence it is not universally portable.
+
+        * Use back references (see below).
+
+`.'
+     Matches any character, including newline.
+
+`^'
+     Matches the null string at beginning of line, i.e. what appears
+     after the circumflex must appear at the beginning of line.
+     `^#include' will match only lines where `#include' is the first
+     thing on line--if there are spaces before, for example, the match
+     fails.  `^' acts as a special character only at the beginning of
+     the regular expression or subexpression (that is, after `\(' or
+     `\|').  Portable scripts should avoid `^' at the beginning of a
+     subexpression, though, as POSIX allows implementations that treat
+     `^' as an ordinary character in that context.
+
+`$'
+     It is the same as `^', but refers to end of line.  `$' also acts
+     as a special character only at the end of the regular expression
+     or subexpression (that is, before `\)' or `\|'), and its use at
+     the end of a subexpression is not portable.
+
+`[LIST]'
+`[^LIST]'
+     Matches any single character in LIST: for example, `[aeiou]'
+     matches all vowels.  A list may include sequences like
+     `CHAR1-CHAR2', which matches any character between (inclusive)
+     CHAR1 and CHAR2.
+
+     A leading `^' reverses the meaning of LIST, so that it matches any
+     single character _not_ in LIST.  To include `]' in the list, make
+     it the first character (after the `^' if needed), to include `-'
+     in the list, make it the first or last; to include `^' put it
+     after the first character.
+
+     The characters `$', `*', `.', `[', and `\' are normally not
+     special within LIST.  For example, `[\*]' matches either `\' or
+     `*', because the `\' is not special here.  However, strings like
+     `[.ch.]', `[=a=]', and `[:space:]' are special within LIST and
+     represent collating symbols, equivalence classes, and character
+     classes, respectively, and `[' is therefore special within LIST
+     when it is followed by `.', `=', or `:'.  Also, when not in
+     `POSIXLY_CORRECT' mode, special escapes like `\n' and `\t' are
+     recognized within LIST.  *Note Escapes::.
+
+`REGEXP1\|REGEXP2'
+     Matches either REGEXP1 or REGEXP2.  Use parentheses to use complex
+     alternative regular expressions.  The matching process tries each
+     alternative in turn, from left to right, and the first one that
+     succeeds is used.  It is a GNU extension.
+
+`REGEXP1REGEXP2'
+     Matches the concatenation of REGEXP1 and REGEXP2.  Concatenation
+     binds more tightly than `\|', `^', and `$', but less tightly than
+     the other regular expression operators.
+
+`\DIGIT'
+     Matches the DIGIT-th `\(...\)' parenthesized subexpression in the
+     regular expression.  This is called a "back reference".
+     Subexpressions are implicity numbered by counting occurrences of
+     `\(' left-to-right.
+
+`\n'
+     Matches the newline character.
+
+`\CHAR'
+     Matches CHAR, where CHAR is one of `$', `*', `.', `[', `\', or `^'.
+     Note that the only C-like backslash sequences that you can
+     portably assume to be interpreted are `\n' and `\\'; in particular
+     `\t' is not portable, and matches a `t' under most implementations
+     of `sed', rather than a tab character.
+
+
+   Note that the regular expression matcher is greedy, i.e., matches
+are attempted from left to right and, if two or more matches are
+possible starting at the same character, it selects the longest.
+
+Examples:
+`abcdef'
+     Matches `abcdef'.
+
+`a*b'
+     Matches zero or more `a's followed by a single `b'.  For example,
+     `b' or `aaaaab'.
+
+`a\?b'
+     Matches `b' or `ab'.
+
+`a\+b\+'
+     Matches one or more `a's followed by one or more `b's: `ab' is the
+     shortest possible match, but other examples are `aaaab' or
+     `abbbbb' or `aaaaaabbbbbbb'.
+
+`.*'
+`.\+'
+     These two both match all the characters in a string; however, the
+     first matches every string (including the empty string), while the
+     second matches only strings containing at least one character.
+
+`^main.*(.*)'
+     his matches a string starting with `main', followed by an opening
+     and closing parenthesis.  The `n', `(' and `)' need not be
+     adjacent.
+
+`^#'
+     This matches a string beginning with `#'.
+
+`\\$'
+     This matches a string ending with a single backslash.  The regexp
+     contains two backslashes for escaping.
+
+`\$'
+     Instead, this matches a string consisting of a single dollar sign,
+     because it is escaped.
+
+`[a-zA-Z0-9]'
+     In the C locale, this matches any ASCII letters or digits.
+
+`[^ tab]\+'
+     (Here `tab' stands for a single tab character.)  This matches a
+     string of one or more characters, none of which is a space or a
+     tab.  Usually this means a word.
+
+`^\(.*\)\n\1$'
+     This matches a string consisting of two equal substrings separated
+     by a newline.
+
+`.\{9\}A$'
+     This matches nine characters followed by an `A'.
+
+`^.\{15\}A'
+     This matches the start of a string that contains 16 characters,
+     the last of which is an `A'.
+
+
+
+File: sed.info,  Node: Common Commands,  Next: The "s" Command,  Prev: Regular Expressions,  Up: sed Programs
+
+Often-Used Commands
+===================
+
+   If you use `sed' at all, you will quite likely want to know these
+commands.
+
+`#'
+     [No addresses allowed.]
+
+     The `#' character begins a comment; the comment continues until
+     the next newline.
+
+     If you are concerned about portability, be aware that some
+     implementations of `sed' (which are not POSIX conformant) may only
+     support a single one-line comment, and then only when the very
+     first character of the script is a `#'.
+
+     Warning: if the first two characters of the `sed' script are `#n',
+     then the `-n' (no-autoprint) option is forced.  If you want to put
+     a comment in the first line of your script and that comment begins
+     with the letter `n' and you do not want this behavior, then be
+     sure to either use a capital `N', or place at least one space
+     before the `n'.
+
+`q [EXIT-CODE]'
+     This command only accepts a single address.
+
+     Exit `sed' without processing any more commands or input.  Note
+     that the current pattern space is printed if auto-print is not
+     disabled with the `-n' options.  The ability to return an exit
+     code from the `sed' script is a GNU `sed' extension.
+
+`d'
+     Delete the pattern space; immediately start next cycle.
+
+`p'
+     Print out the pattern space (to the standard output).  This
+     command is usually only used in conjunction with the `-n'
+     command-line option.
+
+`n'
+     If auto-print is not disabled, print the pattern space, then,
+     regardless, replace the pattern space with the next line of input.
+     If there is no more input then `sed' exits without processing any
+     more commands.
+
+`{ COMMANDS }'
+     A group of commands may be enclosed between `{' and `}' characters.
+     This is particularly useful when you want a group of commands to
+     be triggered by a single address (or address-range) match.
+
+
+
+File: sed.info,  Node: The "s" Command,  Next: Other Commands,  Prev: Common Commands,  Up: sed Programs
+
+The `s' Command
+===============
+
+   The syntax of the `s' (as in substitute) command is
+`s/REGEXP/REPLACEMENT/FLAGS'.  The `/' characters may be uniformly
+replaced by any other single character within any given `s' command.
+The `/' character (or whatever other character is used in its stead)
+can appear in the REGEXP or REPLACEMENT only if it is preceded by a `\'
+character.
+
+   The `s' command is probably the most important in `sed' and has a
+lot of different options.  Its basic concept is simple: the `s' command
+attempts to match the pattern space against the supplied REGEXP; if the
+match is successful, then that portion of the pattern space which was
+matched is replaced with REPLACEMENT.
+
+   The REPLACEMENT can contain `\N' (N being a number from 1 to 9,
+inclusive) references, which refer to the portion of the match which is
+contained between the Nth `\(' and its matching `\)'.  Also, the
+REPLACEMENT can contain unescaped `&' characters which reference the
+whole matched portion of the pattern space.  Finally, as a GNU `sed'
+extension, you can include a special sequence made of a backslash and
+one of the letters `L', `l', `U', `u', or `E'.  The meaning is as
+follows:
+
+`\L'
+     Turn the replacement to lowercase until a `\U' or `\E' is found,
+
+`\l'
+     Turn the next character to lowercase,
+
+`\U'
+     Turn the replacement to uppercase until a `\L' or `\E' is found,
+
+`\u'
+     Turn the next character to uppercase,
+
+`\E'
+     Stop case conversion started by `\L' or `\U'.
+
+   To include a literal `\', `&', or newline in the final replacement,
+be sure to precede the desired `\', `&', or newline in the REPLACEMENT
+with a `\'.
+
+   The `s' command can be followed by zero or more of the following
+FLAGS:
+
+`g'
+     Apply the replacement to _all_ matches to the REGEXP, not just the
+     first.
+
+`NUMBER'
+     Only replace the NUMBERth match of the REGEXP.
+
+     Note: the POSIX standard does not specify what should happen when
+     you mix the `g' and NUMBER modifiers, and currently there is no
+     widely agreed upon meaning across `sed' implementations.  For GNU
+     `sed', the interaction is defined to be: ignore matches before the
+     NUMBERth, and then match and replace all matches from the NUMBERth
+     on.
+
+`p'
+     If the substitution was made, then print the new pattern space.
+
+     Note: when both the `p' and `e' options are specified, the
+     relative ordering of the two produces very different results.  In
+     general, `ep' (evaluate then print) is what you want, but
+     operating the other way round can be useful for debugging.  For
+     this reason, the current version of GNU `sed' interprets specially
+     the presence of `p' options both before and after `e', printing
+     the pattern space before and after evaluation, while in general
+     flags for the `s' command show their effect just once.  This
+     behavior, although documented, might change in future versions.
+
+`w FILE-NAME'
+     If the substitution was made, then write out the result to the
+     named file.  As a GNU `sed' extension, two special values of
+     FILE-NAME are supported: `/dev/stderr', which writes the result to
+     the standard error, and `/dev/stdout', which writes to the standard
+     output.(1)
+
+`e'
+     This command allows one to pipe input from a shell command into
+     pattern space.  If a substitution was made, the command that is
+     found in pattern space is executed and pattern space is replaced
+     with its output.  A trailing newline is suppressed; results are
+     undefined if the command to be executed contains a NUL character.
+     This is a GNU `sed' extension.
+
+`I'
+`i'
+     The `I' modifier to regular-expression matching is a GNU extension
+     which makes `sed' match REGEXP in a case-insensitive manner.
+
+`M'
+`m'
+     The `M' modifier to regular-expression matching is a GNU `sed'
+     extension which causes `^' and `$' to match respectively (in
+     addition to the normal behavior) the empty string after a newline,
+     and the empty string before a newline.  There are special character
+     sequences (`\`' and `\'') which always match the beginning or the
+     end of the buffer.  `M' stands for `multi-line'.
+
+
+   ---------- Footnotes ----------
+
+   (1) This is equivalent to `p' unless the `-i' option is being used.
+
+
+File: sed.info,  Node: Other Commands,  Next: Programming Commands,  Prev: The "s" Command,  Up: sed Programs
+
+Less Frequently-Used Commands
+=============================
+
+   Though perhaps less frequently used than those in the previous
+section, some very small yet useful `sed' scripts can be built with
+these commands.
+
+`y/SOURCE-CHARS/DEST-CHARS/'
+     (The `/' characters may be uniformly replaced by any other single
+     character within any given `y' command.)
+
+     Transliterate any characters in the pattern space which match any
+     of the SOURCE-CHARS with the corresponding character in DEST-CHARS.
+
+     Instances of the `/' (or whatever other character is used in its
+     stead), `\', or newlines can appear in the SOURCE-CHARS or
+     DEST-CHARS lists, provide that each instance is escaped by a `\'.
+     The SOURCE-CHARS and DEST-CHARS lists _must_ contain the same
+     number of characters (after de-escaping).
+
+`a\'
+`TEXT'
+     As a GNU extension, this command accepts two addresses.
+
+     Queue the lines of text which follow this command (each but the
+     last ending with a `\', which are removed from the output) to be
+     output at the end of the current cycle, or when the next input
+     line is read.
+
+     Escape sequences in TEXT are processed, so you should use `\\' in
+     TEXT to print a single backslash.
+
+     As a GNU extension, if between the `a' and the newline there is
+     other than a whitespace-`\' sequence, then the text of this line,
+     starting at the first non-whitespace character after the `a', is
+     taken as the first line of the TEXT block.  (This enables a
+     simplification in scripting a one-line add.)  This extension also
+     works with the `i' and `c' commands.
+
+`i\'
+`TEXT'
+     As a GNU extension, this command accepts two addresses.
+
+     Immediately output the lines of text which follow this command
+     (each but the last ending with a `\', which are removed from the
+     output).
+
+`c\'
+`TEXT'
+     Delete the lines matching the address or address-range, and output
+     the lines of text which follow this command (each but the last
+     ending with a `\', which are removed from the output) in place of
+     the last line (or in place of each line, if no addresses were
+     specified).  A new cycle is started after this command is done,
+     since the pattern space will have been deleted.
+
+`='
+     As a GNU extension, this command accepts two addresses.
+
+     Print out the current input line number (with a trailing newline).
+
+`l N'
+     Print the pattern space in an unambiguous form: non-printable
+     characters (and the `\' character) are printed in C-style escaped
+     form; long lines are split, with a trailing `\' character to
+     indicate the split; the end of each line is marked with a `$'.
+
+     N specifies the desired line-wrap length; a length of 0 (zero)
+     means to never wrap long lines.  If omitted, the default as
+     specified on the command line is used.  The N parameter is a GNU
+     `sed' extension.
+
+`r FILENAME'
+     As a GNU extension, this command accepts two addresses.
+
+     Queue the contents of FILENAME to be read and inserted into the
+     output stream at the end of the current cycle, or when the next
+     input line is read.  Note that if FILENAME cannot be read, it is
+     treated as if it were an empty file, without any error indication.
+
+     As a GNU `sed' extension, the special value `/dev/stdin' is
+     supported for the file name, which reads the contents of the
+     standard input.
+
+`w FILENAME'
+     Write the pattern space to FILENAME.  As a GNU `sed' extension,
+     two special values of FILE-NAME are supported: `/dev/stderr',
+     which writes the result to the standard error, and `/dev/stdout',
+     which writes to the standard output.(1)
+
+     The file will be created (or truncated) before the first input
+     line is read; all `w' commands (including instances of `w' flag on
+     successful `s' commands) which refer to the same FILENAME are
+     output without closing and reopening the file.
+
+`D'
+     Delete text in the pattern space up to the first newline.  If any
+     text is left, restart cycle with the resultant pattern space
+     (without reading a new line of input), otherwise start a normal
+     new cycle.
+
+`N'
+     Add a newline to the pattern space, then append the next line of
+     input to the pattern space.  If there is no more input then `sed'
+     exits without processing any more commands.
+
+`P'
+     Print out the portion of the pattern space up to the first newline.
+
+`h'
+     Replace the contents of the hold space with the contents of the
+     pattern space.
+
+`H'
+     Append a newline to the contents of the hold space, and then
+     append the contents of the pattern space to that of the hold space.
+
+`g'
+     Replace the contents of the pattern space with the contents of the
+     hold space.
+
+`G'
+     Append a newline to the contents of the pattern space, and then
+     append the contents of the hold space to that of the pattern space.
+
+`x'
+     Exchange the contents of the hold and pattern spaces.
+
+
+   ---------- Footnotes ----------
+
+   (1) This is equivalent to `p' unless the `-i' option is being used.
+
+
+File: sed.info,  Node: Programming Commands,  Next: Extended Commands,  Prev: Other Commands,  Up: sed Programs
+
+Commands for `sed' gurus
+========================
+
+   In most cases, use of these commands indicates that you are probably
+better off programming in something like `awk' or Perl.  But
+occasionally one is committed to sticking with `sed', and these
+commands can enable one to write quite convoluted scripts.
+
+`: LABEL'
+     [No addresses allowed.]
+
+     Specify the location of LABEL for branch commands.  In all other
+     respects, a no-op.
+
+`b LABEL'
+     Unconditionally branch to LABEL.  The LABEL may be omitted, in
+     which case the next cycle is started.
+
+`t LABEL'
+     Branch to LABEL only if there has been a successful `s'ubstitution
+     since the last input line was read or conditional branch was taken.
+     The LABEL may be omitted, in which case the next cycle is started.
+
+
+
+File: sed.info,  Node: Extended Commands,  Next: Escapes,  Prev: Programming Commands,  Up: sed Programs
+
+Commands Specific to GNU `sed'
+==============================
+
+   These commands are specific to GNU `sed', so you must use them with
+care and only when you are sure that hindering portability is not evil.
+They allow you to check for GNU `sed' extensions or to do tasks that
+are required quite often, yet are unsupported by standard `sed's.
+
+`e [COMMAND]'
+     This command allows one to pipe input from a shell command into
+     pattern space.  Without parameters, the `e' command executes the
+     command that is found in pattern space and replaces the pattern
+     space with the output; a trailing newline is suppressed.
+
+     If a parameter is specified, instead, the `e' command interprets
+     it as a command and sends its output to the output stream (like
+     `r' does).  The command can run across multiple lines, all but the
+     last ending with a back-slash.
+
+     In both cases, the results are undefined if the command to be
+     executed contains a NUL character.
+
+`L N'
+     This GNU `sed' extension fills and joins lines in pattern space to
+     produce output lines of (at most) N characters, like `fmt' does;
+     if N is omitted, the default as specified on the command line is
+     used.  This command is considered a failed experiment and unless
+     there is enough request (which seems unlikely) will be removed in
+     future versions.
+
+`Q [EXIT-CODE]'
+     This command only accepts a single address.
+
+     This command is the same as `q', but will not print the contents
+     of pattern space.  Like `q', it provides the ability to return an
+     exit code to the caller.
+
+     This command can be useful because the only alternative ways to
+     accomplish this apparently trivial function are to use the `-n'
+     option (which can unnecessarily complicate your script) or
+     resorting to the following snippet, which wastes time by reading
+     the whole file without any visible effect:
+
+          :eat
+          $d       Quit silently on the last line
+          N        Read another line, silently
+          g        Overwrite pattern space each time to save memory
+          b eat
+
+`R FILENAME'
+     Queue a line of FILENAME to be read and inserted into the output
+     stream at the end of the current cycle, or when the next input
+     line is read.  Note that if FILENAME cannot be read, or if its end
+     is reached, no line is appended, without any error indication.
+
+     As with the `r' command, the special value `/dev/stdin' is
+     supported for the file name, which reads a line from the standard
+     input.
+
+`T LABEL'
+     Branch to LABEL only if there have been no successful
+     `s'ubstitutions since the last input line was read or conditional
+     branch was taken. The LABEL may be omitted, in which case the next
+     cycle is started.
+
+`v VERSION'
+     This command does nothing, but makes `sed' fail if GNU `sed'
+     extensions are not supported, simply because other versions of
+     `sed' do not implement it.  In addition, you can specify the
+     version of `sed' that your script requires, such as `4.0.5'.  The
+     default is `4.0' because that is the first version that
+     implemented this command.
+
+     This command enables all GNU extensions even if `POSIXLY_CORRECT'
+     is set in the environment.
+
+`W FILENAME'
+     Write to the given filename the portion of the pattern space up to
+     the first newline.  Everything said under the `w' command about
+     file handling holds here too.
+
+
+File: sed.info,  Node: Escapes,  Prev: Extended Commands,  Up: sed Programs
+
+GNU Extensions for Escapes in Regular Expressions
+=================================================
+
+   Until this chapter, we have only encountered escapes of the form
+`\^', which tell `sed' not to interpret the circumflex as a special
+character, but rather to take it literally.  For example, `\*' matches
+a single asterisk rather than zero or more backslashes.
+
+   This chapter introduces another kind of escape(1)--that is, escapes
+that are applied to a character or sequence of characters that
+ordinarily are taken literally, and that `sed' replaces with a special
+character.  This provides a way of encoding non-printable characters in
+patterns in a visible manner.  There is no restriction on the
+appearance of non-printing characters in a `sed' script but when a
+script is being prepared in the shell or by text editing, it is usually
+easier to use one of the following escape sequences than the binary
+character it represents:
+
+   The list of these escapes is:
+
+`\a'
+     Produces or matches a BEL character, that is an "alert" (ASCII 7).
+
+`\f'
+     Produces or matches a form feed (ASCII 12).
+
+`\n'
+     Produces or matches a newline (ASCII 10).
+
+`\r'
+     Produces or matches a carriage return (ASCII 13).
+
+`\t'
+     Produces or matches a horizontal tab (ASCII 9).
+
+`\v'
+     Produces or matches a so called "vertical tab" (ASCII 11).
+
+`\cX'
+     Produces or matches `CONTROL-X', where X is any character.  The
+     precise effect of `\cX' is as follows: if X is a lower case
+     letter, it is converted to upper case.  Then bit 6 of the
+     character (hex 40) is inverted.  Thus `\cz' becomes hex 1A, but
+     `\c{' becomes hex 3B, while `\c;' becomes hex 7B.
+
+`\dXXX'
+     Produces or matches a character whose decimal ASCII value is XXX.
+
+`\oXXX'
+     Produces or matches a character whose octal ASCII value is XXX.
+
+`\xXX'
+     Produces or matches a character whose hexadecimal ASCII value is
+     XX.
+
+   `\b' (backspace) was omitted because of the conflict with the
+existing "word boundary" meaning.
+
+   Other escapes match a particular character class and are valid only
+in regular expressions:
+
+`\w'
+     Matches any "word" character.  A "word" character is any letter or
+     digit or the underscore character.
+
+`\W'
+     Matches any "non-word" character.
+
+`\b'
+     Matches a word boundary; that is it matches if the character to
+     the left is a "word" character and the character to the right is a
+     "non-word" character, or vice-versa.
+
+`\B'
+     Matches everywhere but on a word boundary; that is it matches if
+     the character to the left and the character to the right are
+     either both "word" characters or both "non-word" characters.
+
+`\`'
+     Matches only at the start of pattern space.  This is different
+     from `^' in multi-line mode.
+
+`\''
+     Matches only at the end of pattern space.  This is different from
+     `$' in multi-line mode.
+
+
+   ---------- Footnotes ----------
+
+   (1) All the escapes introduced here are GNU extensions, with the
+exception of `\n'.  In basic regular expression mode, setting
+`POSIXLY_CORRECT' disables them inside bracket expressions.
+
+
+File: sed.info,  Node: Examples,  Next: Limitations,  Prev: sed Programs,  Up: Top
+
+Some Sample Scripts
+*******************
+
+   Here are some `sed' scripts to guide you in the art of mastering
+`sed'.
+
+* Menu:
+
+Some exotic examples:
+* Centering lines::
+* Increment a number::
+* Rename files to lower case::
+* Print bash environment::
+* Reverse chars of lines::
+
+Emulating standard utilities:
+* tac::                             Reverse lines of files
+* cat -n::                          Numbering lines
+* cat -b::                          Numbering non-blank lines
+* wc -c::                           Counting chars
+* wc -w::                           Counting words
+* wc -l::                           Counting lines
+* head::                            Printing the first lines
+* tail::                            Printing the last lines
+* uniq::                            Make duplicate lines unique
+* uniq -d::                         Print duplicated lines of input
+* uniq -u::                         Remove all duplicated lines
+* cat -s::                          Squeezing blank lines
+
+
+File: sed.info,  Node: Centering lines,  Next: Increment a number,  Up: Examples
+
+Centering Lines
+===============
+
+   This script centers all lines of a file on a 80 columns width.  To
+change that width, the number in `\{...\}' must be replaced, and the
+number of added spaces also must be changed.
+
+   Note how the buffer commands are used to separate parts in the
+regular expressions to be matched--this is a common technique.
+
+     #!/usr/bin/sed -f
+     
+     # Put 80 spaces in the buffer
+     1 {
+       x
+       s/^$/          /
+       s/^.*$/&&&&&&&&/
+       x
+     }
+     
+     # del leading and trailing spaces
+     y/tab/ /
+     s/^ *//
+     s/ *$//
+     
+     # add a newline and 80 spaces to end of line
+     G
+     
+     # keep first 81 chars (80 + a newline)
+     s/^\(.\{81\}\).*$/\1/
+     
+     # \2 matches half of the spaces, which are moved to the beginning
+     s/^\(.*\)\n\(.*\)\2/\2\1/
+
+
+File: sed.info,  Node: Increment a number,  Next: Rename files to lower case,  Prev: Centering lines,  Up: Examples
+
+Increment a Number
+==================
+
+   This script is one of a few that demonstrate how to do arithmetic in
+`sed'.  This is indeed possible,(1) but must be done manually.
+
+   To increment one number you just add 1 to last digit, replacing it
+by the following digit.  There is one exception: when the digit is a
+nine the previous digits must be also incremented until you don't have
+a nine.
+
+   This solution by Bruno Haible is very clever and smart because it
+uses a single buffer; if you don't have this limitation, the algorithm
+used in *Note Numbering lines: cat -n, is faster.  It works by
+replacing trailing nines with an underscore, then using multiple `s'
+commands to increment the last digit, and then again substituting
+underscores with zeros.
+
+     #!/usr/bin/sed -f
+     
+     /[^0-9]/ d
+     
+     # replace all leading 9s by _ (any other character except digits, could
+     # be used)
+     :d
+     s/9\(_*\)$/_\1/
+     td
+     
+     # incr last digit only.  The first line adds a most-significant
+     # digit of 1 if we have to add a digit.
+     #
+     # The `tn' commands are not necessary, but make the thing
+     # faster
+     
+     s/^\(_*\)$/1\1/; tn
+     s/8\(_*\)$/9\1/; tn
+     s/7\(_*\)$/8\1/; tn
+     s/6\(_*\)$/7\1/; tn
+     s/5\(_*\)$/6\1/; tn
+     s/4\(_*\)$/5\1/; tn
+     s/3\(_*\)$/4\1/; tn
+     s/2\(_*\)$/3\1/; tn
+     s/1\(_*\)$/2\1/; tn
+     s/0\(_*\)$/1\1/; tn
+     
+     :n
+     y/_/0/
+
+   ---------- Footnotes ----------
+
+   (1) `sed' guru Greg Ubben wrote an implementation of the `dc' RPN
+calculator!  It is distributed together with sed.
+
+
+File: sed.info,  Node: Rename files to lower case,  Next: Print bash environment,  Prev: Increment a number,  Up: Examples
+
+Rename Files to Lower Case
+==========================
+
+   This is a pretty strange use of `sed'.  We transform text, and
+transform it to be shell commands, then just feed them to shell.  Don't
+worry, even worse hacks are done when using `sed'; I have seen a script
+converting the output of `date' into a `bc' program!
+
+   The main body of this is the `sed' script, which remaps the name
+from lower to upper (or vice-versa) and even checks out if the remapped
+name is the same as the original name.  Note how the script is
+parameterized using shell variables and proper quoting.
+
+     #! /bin/sh
+     # rename files to lower/upper case...
+     #
+     # usage:
+     #    move-to-lower *
+     #    move-to-upper *
+     # or
+     #    move-to-lower -R .
+     #    move-to-upper -R .
+     #
+     
+     help()
+     {
+     	cat << eof
+     Usage: $0 [-n] [-r] [-h] files...
+     
+     -n      do nothing, only see what would be done
+     -R      recursive (use find)
+     -h      this message
+     files   files to remap to lower case
+     
+     Examples:
+            $0 -n *        (see if everything is ok, then...)
+            $0 *
+     
+            $0 -R .
+     
+     eof
+     }
+     
+     apply_cmd='sh'
+     finder='echo "$@" | tr " " "\n"'
+     files_only=
+     
+     while :
+     do
+         case "$1" in
+             -n) apply_cmd='cat' ;;
+             -R) finder='find "$@" -type f';;
+             -h) help ; exit 1 ;;
+             *) break ;;
+         esac
+         shift
+     done
+     
+     if [ -z "$1" ]; then
+             echo Usage: $0 [-h] [-n] [-r] files...
+             exit 1
+     fi
+     
+     LOWER='abcdefghijklmnopqrstuvwxyz'
+     UPPER='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+     
+     case `basename $0` in
+             *upper*) TO=$UPPER; FROM=$LOWER ;;
+             *)       FROM=$UPPER; TO=$LOWER ;;
+     esac
+     
+     eval $finder | sed -n '
+     
+     # remove all trailing slashes
+     s/\/*$//
+     
+     # add ./ if there is no path, only a filename
+     /\//! s/^/.\//
+     
+     # save path+filename
+     h
+     
+     # remove path
+     s/.*\///
+     
+     # do conversion only on filename
+     y/'$FROM'/'$TO'/
+     
+     # now line contains original path+file, while
+     # hold space contains the new filename
+     x
+     
+     # add converted file name to line, which now contains
+     # path/file-name\nconverted-file-name
+     G
+     
+     # check if converted file name is equal to original file name,
+     # if it is, do not print nothing
+     /^.*\/\(.*\)\n\1/b
+     
+     # now, transform path/fromfile\n, into
+     # mv path/fromfile path/tofile and print it
+     s/^\(.*\/\)\(.*\)\n\(.*\)$/mv "\1\2" "\1\3"/p
+     
+     ' | $apply_cmd
+
diff --git a/src/sed/doc/sed.info-2 b/src/sed/doc/sed.info-2
new file mode 100644
index 0000000..ee74b14
--- /dev/null
+++ b/src/sed/doc/sed.info-2
@@ -0,0 +1,1087 @@
+This is ../../doc/sed.info, produced by makeinfo version 4.5 from
+../../doc/sed.texi.
+
+INFO-DIR-SECTION Text creation and manipulation
+START-INFO-DIR-ENTRY
+* sed: (sed).                   Stream EDitor.
+
+END-INFO-DIR-ENTRY
+
+This file documents version 4.1.5 of GNU `sed', a stream editor.
+
+   Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004 Free Software
+Foundation, Inc.
+
+   This document is released under the terms of the GNU Free
+Documentation License as published by the Free Software Foundation;
+either version 1.1, or (at your option) any later version.
+
+   You should have received a copy of the GNU Free Documentation
+License along with GNU `sed'; see the file `COPYING.DOC'.  If not,
+write to the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02110-1301, USA.
+
+   There are no Cover Texts and no Invariant Sections; this text, along
+with its equivalent in the printed manual, constitutes the Title Page.
+
+File: sed.info,  Node: Print bash environment,  Next: Reverse chars of lines,  Prev: Rename files to lower case,  Up: Examples
+
+Print `bash' Environment
+========================
+
+   This script strips the definition of the shell functions from the
+output of the `set' Bourne-shell command.
+
+     #!/bin/sh
+     
+     set | sed -n '
+     :x
+     
+     # if no occurrence of "=()" print and load next line
+     /=()/! { p; b; }
+     / () $/! { p; b; }
+     
+     # possible start of functions section
+     # save the line in case this is a var like FOO="() "
+     h
+     
+     # if the next line has a brace, we quit because
+     # nothing comes after functions
+     n
+     /^{/ q
+     
+     # print the old line
+     x; p
+     
+     # work on the new line now
+     x; bx
+     '
+
+
+File: sed.info,  Node: Reverse chars of lines,  Next: tac,  Prev: Print bash environment,  Up: Examples
+
+Reverse Characters of Lines
+===========================
+
+   This script can be used to reverse the position of characters in
+lines.  The technique moves two characters at a time, hence it is
+faster than more intuitive implementations.
+
+   Note the `tx' command before the definition of the label.  This is
+often needed to reset the flag that is tested by the `t' command.
+
+   Imaginative readers will find uses for this script.  An example is
+reversing the output of `banner'.(1)
+
+     #!/usr/bin/sed -f
+     
+     /../! b
+     
+     # Reverse a line.  Begin embedding the line between two newlines
+     s/^.*$/\
+     &\
+     /
+     
+     # Move first character at the end.  The regexp matches until
+     # there are zero or one characters between the markers
+     tx
+     :x
+     s/\(\n.\)\(.*\)\(.\n\)/\3\2\1/
+     tx
+     
+     # Remove the newline markers
+     s/\n//g
+
+   ---------- Footnotes ----------
+
+   (1) This requires another script to pad the output of banner; for
+example
+
+     #! /bin/sh
+     
+     banner -w $1 $2 $3 $4 |
+       sed -e :a -e '/^.\{0,'$1'\}$/ { s/$/ /; ba; }' |
+       ~/sedscripts/reverseline.sed
+
+
+File: sed.info,  Node: tac,  Next: cat -n,  Prev: Reverse chars of lines,  Up: Examples
+
+Reverse Lines of Files
+======================
+
+   This one begins a series of totally useless (yet interesting)
+scripts emulating various Unix commands.  This, in particular, is a
+`tac' workalike.
+
+   Note that on implementations other than GNU `sed' this script might
+easily overflow internal buffers.
+
+     #!/usr/bin/sed -nf
+     
+     # reverse all lines of input, i.e. first line became last, ...
+     
+     # from the second line, the buffer (which contains all previous lines)
+     # is *appended* to current line, so, the order will be reversed
+     1! G
+     
+     # on the last line we're done -- print everything
+     $ p
+     
+     # store everything on the buffer again
+     h
+
+
+File: sed.info,  Node: cat -n,  Next: cat -b,  Prev: tac,  Up: Examples
+
+Numbering Lines
+===============
+
+   This script replaces `cat -n'; in fact it formats its output exactly
+like GNU `cat' does.
+
+   Of course this is completely useless and for two reasons:  first,
+because somebody else did it in C, second, because the following
+Bourne-shell script could be used for the same purpose and would be
+much faster:
+
+     #! /bin/sh
+     sed -e "=" $@ | sed -e '
+       s/^/      /
+       N
+       s/^ *\(......\)\n/\1  /
+     '
+
+   It uses `sed' to print the line number, then groups lines two by two
+using `N'.  Of course, this script does not teach as much as the one
+presented below.
+
+   The algorithm used for incrementing uses both buffers, so the line
+is printed as soon as possible and then discarded.  The number is split
+so that changing digits go in a buffer and unchanged ones go in the
+other; the changed digits are modified in a single step (using a `y'
+command).  The line number for the next line is then composed and
+stored in the hold space, to be used in the next iteration.
+
+     #!/usr/bin/sed -nf
+     
+     # Prime the pump on the first line
+     x
+     /^$/ s/^.*$/1/
+     
+     # Add the correct line number before the pattern
+     G
+     h
+     
+     # Format it and print it
+     s/^/      /
+     s/^ *\(......\)\n/\1  /p
+     
+     # Get the line number from hold space; add a zero
+     # if we're going to add a digit on the next line
+     g
+     s/\n.*$//
+     /^9*$/ s/^/0/
+     
+     # separate changing/unchanged digits with an x
+     s/.9*$/x&/
+     
+     # keep changing digits in hold space
+     h
+     s/^.*x//
+     y/0123456789/1234567890/
+     x
+     
+     # keep unchanged digits in pattern space
+     s/x.*$//
+     
+     # compose the new number, remove the newline implicitly added by G
+     G
+     s/\n//
+     h
+
+
+File: sed.info,  Node: cat -b,  Next: wc -c,  Prev: cat -n,  Up: Examples
+
+Numbering Non-blank Lines
+=========================
+
+   Emulating `cat -b' is almost the same as `cat -n'--we only have to
+select which lines are to be numbered and which are not.
+
+   The part that is common to this script and the previous one is not
+commented to show how important it is to comment `sed' scripts
+properly...
+
+     #!/usr/bin/sed -nf
+     
+     /^$/ {
+       p
+       b
+     }
+     
+     # Same as cat -n from now
+     x
+     /^$/ s/^.*$/1/
+     G
+     h
+     s/^/      /
+     s/^ *\(......\)\n/\1  /p
+     x
+     s/\n.*$//
+     /^9*$/ s/^/0/
+     s/.9*$/x&/
+     h
+     s/^.*x//
+     y/0123456789/1234567890/
+     x
+     s/x.*$//
+     G
+     s/\n//
+     h
+
+
+File: sed.info,  Node: wc -c,  Next: wc -w,  Prev: cat -b,  Up: Examples
+
+Counting Characters
+===================
+
+   This script shows another way to do arithmetic with `sed'.  In this
+case we have to add possibly large numbers, so implementing this by
+successive increments would not be feasible (and possibly even more
+complicated to contrive than this script).
+
+   The approach is to map numbers to letters, kind of an abacus
+implemented with `sed'.  `a's are units, `b's are tens and so on: we
+simply add the number of characters on the current line as units, and
+then propagate the carry to tens, hundreds, and so on.
+
+   As usual, running totals are kept in hold space.
+
+   On the last line, we convert the abacus form back to decimal.  For
+the sake of variety, this is done with a loop rather than with some 80
+`s' commands(1): first we convert units, removing `a's from the number;
+then we rotate letters so that tens become `a's, and so on until no
+more letters remain.
+
+     #!/usr/bin/sed -nf
+     
+     # Add n+1 a's to hold space (+1 is for the newline)
+     s/./a/g
+     H
+     x
+     s/\n/a/
+     
+     # Do the carry.  The t's and b's are not necessary,
+     # but they do speed up the thing
+     t a
+     : a;  s/aaaaaaaaaa/b/g; t b; b done
+     : b;  s/bbbbbbbbbb/c/g; t c; b done
+     : c;  s/cccccccccc/d/g; t d; b done
+     : d;  s/dddddddddd/e/g; t e; b done
+     : e;  s/eeeeeeeeee/f/g; t f; b done
+     : f;  s/ffffffffff/g/g; t g; b done
+     : g;  s/gggggggggg/h/g; t h; b done
+     : h;  s/hhhhhhhhhh//g
+     
+     : done
+     $! {
+       h
+       b
+     }
+     
+     # On the last line, convert back to decimal
+     
+     : loop
+     /a/! s/[b-h]*/&0/
+     s/aaaaaaaaa/9/
+     s/aaaaaaaa/8/
+     s/aaaaaaa/7/
+     s/aaaaaa/6/
+     s/aaaaa/5/
+     s/aaaa/4/
+     s/aaa/3/
+     s/aa/2/
+     s/a/1/
+     
+     : next
+     y/bcdefgh/abcdefg/
+     /[a-h]/ b loop
+     p
+
+   ---------- Footnotes ----------
+
+   (1) Some implementations have a limit of 199 commands per script
+
+
+File: sed.info,  Node: wc -w,  Next: wc -l,  Prev: wc -c,  Up: Examples
+
+Counting Words
+==============
+
+   This script is almost the same as the previous one, once each of the
+words on the line is converted to a single `a' (in the previous script
+each letter was changed to an `a').
+
+   It is interesting that real `wc' programs have optimized loops for
+`wc -c', so they are much slower at counting words rather than
+characters.  This script's bottleneck, instead, is arithmetic, and
+hence the word-counting one is faster (it has to manage smaller
+numbers).
+
+   Again, the common parts are not commented to show the importance of
+commenting `sed' scripts.
+
+     #!/usr/bin/sed -nf
+     
+     # Convert words to a's
+     s/[ tab][ tab]*/ /g
+     s/^/ /
+     s/ [^ ][^ ]*/a /g
+     s/ //g
+     
+     # Append them to hold space
+     H
+     x
+     s/\n//
+     
+     # From here on it is the same as in wc -c.
+     /aaaaaaaaaa/! bx;   s/aaaaaaaaaa/b/g
+     /bbbbbbbbbb/! bx;   s/bbbbbbbbbb/c/g
+     /cccccccccc/! bx;   s/cccccccccc/d/g
+     /dddddddddd/! bx;   s/dddddddddd/e/g
+     /eeeeeeeeee/! bx;   s/eeeeeeeeee/f/g
+     /ffffffffff/! bx;   s/ffffffffff/g/g
+     /gggggggggg/! bx;   s/gggggggggg/h/g
+     s/hhhhhhhhhh//g
+     :x
+     $! { h; b; }
+     :y
+     /a/! s/[b-h]*/&0/
+     s/aaaaaaaaa/9/
+     s/aaaaaaaa/8/
+     s/aaaaaaa/7/
+     s/aaaaaa/6/
+     s/aaaaa/5/
+     s/aaaa/4/
+     s/aaa/3/
+     s/aa/2/
+     s/a/1/
+     y/bcdefgh/abcdefg/
+     /[a-h]/ by
+     p
+
+
+File: sed.info,  Node: wc -l,  Next: head,  Prev: wc -w,  Up: Examples
+
+Counting Lines
+==============
+
+   No strange things are done now, because `sed' gives us `wc -l'
+functionality for free!!! Look:
+
+     #!/usr/bin/sed -nf
+     $=
+
+
+File: sed.info,  Node: head,  Next: tail,  Prev: wc -l,  Up: Examples
+
+Printing the First Lines
+========================
+
+   This script is probably the simplest useful `sed' script.  It
+displays the first 10 lines of input; the number of displayed lines is
+right before the `q' command.
+
+     #!/usr/bin/sed -f
+     10q
+
+
+File: sed.info,  Node: tail,  Next: uniq,  Prev: head,  Up: Examples
+
+Printing the Last Lines
+=======================
+
+   Printing the last N lines rather than the first is more complex but
+indeed possible.  N is encoded in the second line, before the bang
+character.
+
+   This script is similar to the `tac' script in that it keeps the
+final output in the hold space and prints it at the end:
+
+     #!/usr/bin/sed -nf
+     
+     1! {; H; g; }
+     1,10 !s/[^\n]*\n//
+     $p
+     h
+
+   Mainly, the scripts keeps a window of 10 lines and slides it by
+adding a line and deleting the oldest (the substitution command on the
+second line works like a `D' command but does not restart the loop).
+
+   The "sliding window" technique is a very powerful way to write
+efficient and complex `sed' scripts, because commands like `P' would
+require a lot of work if implemented manually.
+
+   To introduce the technique, which is fully demonstrated in the rest
+of this chapter and is based on the `N', `P' and `D' commands, here is
+an implementation of `tail' using a simple "sliding window."
+
+   This looks complicated but in fact the working is the same as the
+last script: after we have kicked in the appropriate number of lines,
+however, we stop using the hold space to keep inter-line state, and
+instead use `N' and `D' to slide pattern space by one line:
+
+     #!/usr/bin/sed -f
+     
+     1h
+     2,10 {; H; g; }
+     $q
+     1,9d
+     N
+     D
+
+   Note how the first, second and fourth line are inactive after the
+first ten lines of input.  After that, all the script does is: exiting
+on the last line of input, appending the next input line to pattern
+space, and removing the first line.
+
+
+File: sed.info,  Node: uniq,  Next: uniq -d,  Prev: tail,  Up: Examples
+
+Make Duplicate Lines Unique
+===========================
+
+   This is an example of the art of using the `N', `P' and `D'
+commands, probably the most difficult to master.
+
+     #!/usr/bin/sed -f
+     h
+     
+     :b
+     # On the last line, print and exit
+     $b
+     N
+     /^\(.*\)\n\1$/ {
+         # The two lines are identical.  Undo the effect of
+         # the n command.
+         g
+         bb
+     }
+     
+     # If the `N' command had added the last line, print and exit
+     $b
+     
+     # The lines are different; print the first and go
+     # back working on the second.
+     P
+     D
+
+   As you can see, we mantain a 2-line window using `P' and `D'.  This
+technique is often used in advanced `sed' scripts.
+
+
+File: sed.info,  Node: uniq -d,  Next: uniq -u,  Prev: uniq,  Up: Examples
+
+Print Duplicated Lines of Input
+===============================
+
+   This script prints only duplicated lines, like `uniq -d'.
+
+     #!/usr/bin/sed -nf
+     
+     $b
+     N
+     /^\(.*\)\n\1$/ {
+         # Print the first of the duplicated lines
+         s/.*\n//
+         p
+     
+         # Loop until we get a different line
+         :b
+         $b
+         N
+         /^\(.*\)\n\1$/ {
+             s/.*\n//
+             bb
+         }
+     }
+     
+     # The last line cannot be followed by duplicates
+     $b
+     
+     # Found a different one.  Leave it alone in the pattern space
+     # and go back to the top, hunting its duplicates
+     D
+
+
+File: sed.info,  Node: uniq -u,  Next: cat -s,  Prev: uniq -d,  Up: Examples
+
+Remove All Duplicated Lines
+===========================
+
+   This script prints only unique lines, like `uniq -u'.
+
+     #!/usr/bin/sed -f
+     
+     # Search for a duplicate line --- until that, print what you find.
+     $b
+     N
+     /^\(.*\)\n\1$/ ! {
+         P
+         D
+     }
+     
+     :c
+     # Got two equal lines in pattern space.  At the
+     # end of the file we simply exit
+     $d
+     
+     # Else, we keep reading lines with `N' until we
+     # find a different one
+     s/.*\n//
+     N
+     /^\(.*\)\n\1$/ {
+         bc
+     }
+     
+     # Remove the last instance of the duplicate line
+     # and go back to the top
+     D
+
+
+File: sed.info,  Node: cat -s,  Prev: uniq -u,  Up: Examples
+
+Squeezing Blank Lines
+=====================
+
+   As a final example, here are three scripts, of increasing complexity
+and speed, that implement the same function as `cat -s', that is
+squeezing blank lines.
+
+   The first leaves a blank line at the beginning and end if there are
+some already.
+
+     #!/usr/bin/sed -f
+     
+     # on empty lines, join with next
+     # Note there is a star in the regexp
+     :x
+     /^\n*$/ {
+     N
+     bx
+     }
+     
+     # now, squeeze all '\n', this can be also done by:
+     # s/^\(\n\)*/\1/
+     s/\n*/\
+     /
+
+   This one is a bit more complex and removes all empty lines at the
+beginning.  It does leave a single blank line at end if one was there.
+
+     #!/usr/bin/sed -f
+     
+     # delete all leading empty lines
+     1,/^./{
+     /./!d
+     }
+     
+     # on an empty line we remove it and all the following
+     # empty lines, but one
+     :x
+     /./!{
+     N
+     s/^\n$//
+     tx
+     }
+
+   This removes leading and trailing blank lines.  It is also the
+fastest.  Note that loops are completely done with `n' and `b', without
+relying on `sed' to restart the the script automatically at the end of
+a line.
+
+     #!/usr/bin/sed -nf
+     
+     # delete all (leading) blanks
+     /./!d
+     
+     # get here: so there is a non empty
+     :x
+     # print it
+     p
+     # get next
+     n
+     # got chars? print it again, etc...
+     /./bx
+     
+     # no, don't have chars: got an empty line
+     :z
+     # get next, if last line we finish here so no trailing
+     # empty lines are written
+     n
+     # also empty? then ignore it, and get next... this will
+     # remove ALL empty lines
+     /./!bz
+     
+     # all empty lines were deleted/ignored, but we have a non empty.  As
+     # what we want to do is to squeeze, insert a blank line artificially
+     i\
+     
+     bx
+
+
+File: sed.info,  Node: Limitations,  Next: Other Resources,  Prev: Examples,  Up: Top
+
+GNU `sed''s Limitations and Non-limitations
+*******************************************
+
+   For those who want to write portable `sed' scripts, be aware that
+some implementations have been known to limit line lengths (for the
+pattern and hold spaces) to be no more than 4000 bytes.  The POSIX
+standard specifies that conforming `sed' implementations shall support
+at least 8192 byte line lengths.  GNU `sed' has no built-in limit on
+line length; as long as it can `malloc()' more (virtual) memory, you
+can feed or construct lines as long as you like.
+
+   However, recursion is used to handle subpatterns and indefinite
+repetition.  This means that the available stack space may limit the
+size of the buffer that can be processed by certain patterns.
+
+
+File: sed.info,  Node: Other Resources,  Next: Reporting Bugs,  Prev: Limitations,  Up: Top
+
+Other Resources for Learning About `sed'
+****************************************
+
+   In addition to several books that have been written about `sed'
+(either specifically or as chapters in books which discuss shell
+programming), one can find out more about `sed' (including suggestions
+of a few books) from the FAQ for the `sed-users' mailing list,
+available from any of:
+      `http://www.student.northpark.edu/pemente/sed/sedfaq.html'
+      `http://sed.sf.net/grabbag/tutorials/sedfaq.html'
+
+   Also of interest are
+`http://www.student.northpark.edu/pemente/sed/index.htm' and
+`http://sed.sf.net/grabbag', which include `sed' tutorials and other
+`sed'-related goodies.
+
+   The `sed-users' mailing list itself maintained by Sven Guckes.  To
+subscribe, visit `http://groups.yahoo.com' and search for the
+`sed-users' mailing list.
+
+
+File: sed.info,  Node: Reporting Bugs,  Next: Extended regexps,  Prev: Other Resources,  Up: Top
+
+Reporting Bugs
+**************
+
+   Email bug reports to <bonzini@gnu.org>.  Be sure to include the word
+"sed" somewhere in the `Subject:' field.  Also, please include the
+output of `sed --version' in the body of your report if at all possible.
+
+   Please do not send a bug report like this:
+
+     while building frobme-1.3.4
+     $ configure
+     error--> sed: file sedscr line 1: Unknown option to 's'
+
+   If GNU `sed' doesn't configure your favorite package, take a few
+extra minutes to identify the specific problem and make a stand-alone
+test case.  Unlike other programs such as C compilers, making such test
+cases for `sed' is quite simple.
+
+   A stand-alone test case includes all the data necessary to perform
+the test, and the specific invocation of `sed' that causes the problem.
+The smaller a stand-alone test case is, the better.  A test case should
+not involve something as far removed from `sed' as "try to configure
+frobme-1.3.4".  Yes, that is in principle enough information to look
+for the bug, but that is not a very practical prospect.
+
+   Here are a few commonly reported bugs that are not bugs.
+
+`N' command on the last line
+     Most versions of `sed' exit without printing anything when the `N'
+     command is issued on the last line of a file.  GNU `sed' prints
+     pattern space before exiting unless of course the `-n' command
+     switch has been specified.  This choice is by design.
+
+     For example, the behavior of
+          sed N foo bar
+
+     would depend on whether foo has an even or an odd number of
+     lines(1).  Or, when writing a script to read the next few lines
+     following a pattern match, traditional implementations of `sed'
+     would force you to write something like
+          /foo/{ $!N; $!N; $!N; $!N; $!N; $!N; $!N; $!N; $!N }
+
+     instead of just
+          /foo/{ N;N;N;N;N;N;N;N;N; }
+
+     In any case, the simplest workaround is to use `$d;N' in scripts
+     that rely on the traditional behavior, or to set the
+     `POSIXLY_CORRECT' variable to a non-empty value.
+
+Regex syntax clashes (problems with backslashes)
+     `sed' uses the POSIX basic regular expression syntax.  According to
+     the standard, the meaning of some escape sequences is undefined in
+     this syntax;  notable in the case of `sed' are `\|', `\+', `\?',
+     `\`', `\'', `\<', `\>', `\b', `\B', `\w', and `\W'.
+
+     As in all GNU programs that use POSIX basic regular expressions,
+     `sed' interprets these escape sequences as special characters.
+     So, `x\+' matches one or more occurrences of `x'.  `abc\|def'
+     matches either `abc' or `def'.
+
+     This syntax may cause problems when running scripts written for
+     other `sed's.  Some `sed' programs have been written with the
+     assumption that `\|' and `\+' match the literal characters `|' and
+     `+'.  Such scripts must be modified by removing the spurious
+     backslashes if they are to be used with modern implementations of
+     `sed', like GNU `sed'.
+
+     On the other hand, some scripts use s|abc\|def||g to remove
+     occurrences of _either_ `abc' or `def'.  While this worked until
+     `sed' 4.0.x, newer versions interpret this as removing the string
+     `abc|def'.  This is again undefined behavior according to POSIX,
+     and this interpretation is arguably more robust: older `sed's, for
+     example, required that the regex matcher parsed `\/' as `/' in the
+     common case of escaping a slash, which is again undefined
+     behavior; the new behavior avoids this, and this is good because
+     the regex matcher is only partially under our control.
+
+     In addition, this version of `sed' supports several escape
+     characters (some of which are multi-character) to insert
+     non-printable characters in scripts (`\a', `\c', `\d', `\o', `\r',
+     `\t', `\v', `\x').  These can cause similar problems with scripts
+     written for other `sed's.
+
+`-i' clobbers read-only files
+     In short, `sed -i' will let you delete the contents of a read-only
+     file, and in general the `-i' option (*note Invocation: Invoking
+     sed.) lets you clobber protected files.  This is not a bug, but
+     rather a consequence of how the Unix filesystem works.
+
+     The permissions on a file say what can happen to the data in that
+     file, while the permissions on a directory say what can happen to
+     the list of files in that directory.  `sed -i' will not ever open
+     for writing  a file that is already on disk.  Rather, it will work
+     on a temporary file that is finally renamed to the original name:
+     if you rename or delete files, you're actually modifying the
+     contents of the directory, so the operation depends on the
+     permissions of the directory, not of the file.  For this same
+     reason, `sed' does not let you use `-i' on a writeable file in a
+     read-only directory (but unbelievably nobody reports that as a
+     bug...).
+
+`0a' does not work (gives an error)
+     There is no line 0.  0 is a special address that is only used to
+     treat addresses like `0,/RE/' as active when the script starts: if
+     you write `1,/abc/d' and the first line includes the word `abc',
+     then that match would be ignored because address ranges must span
+     at least two lines (barring the end of the file); but what you
+     probably wanted is to delete every line up to the first one
+     including `abc', and this is obtained with `0,/abc/d'.
+
+`[a-z]' is case insensitive
+     You are encountering problems with locales.  POSIX mandates that
+     `[a-z]' uses the current locale's collation order - in C parlance,
+     that means using `strcoll(3)' instead of `strcmp(3)'.  Some
+     locales have a case-insensitive collation order, others don't: one
+     of those that have problems is Estonian.
+
+     Another problem is that `[a-z]' tries to use collation symbols.
+     This only happens if you are on the GNU system, using GNU libc's
+     regular expression matcher instead of compiling the one supplied
+     with GNU sed.  In a Danish locale, for example, the regular
+     expression `^[a-z]$' matches the string `aa', because this is a
+     single collating symbol that comes after `a' and before `b'; `ll'
+     behaves similarly in Spanish locales, or `ij' in Dutch locales.
+
+     To work around these problems, which may cause bugs in shell
+     scripts, set the `LC_COLLATE' and `LC_CTYPE' environment variables
+     to `C'.
+
+   ---------- Footnotes ----------
+
+   (1) which is the actual "bug" that prompted the change in behavior
+
+
+File: sed.info,  Node: Extended regexps,  Next: Concept Index,  Prev: Reporting Bugs,  Up: Top
+
+Extended regular expressions
+****************************
+
+   The only difference between basic and extended regular expressions
+is in the behavior of a few characters: `?', `+', parentheses, and
+braces (`{}').  While basic regular expressions require these to be
+escaped if you want them to behave as special characters, when using
+extended regular expressions you must escape them if you want them _to
+match a literal character_.
+
+Examples:
+`abc?'
+     becomes `abc\?' when using extended regular expressions.  It
+     matches the literal string `abc?'.
+
+`c\+'
+     becomes `c+' when using extended regular expressions.  It matches
+     one or more `c's.
+
+`a\{3,\}'
+     becomes `a{3,}' when using extended regular expressions.  It
+     matches three or more `a's.
+
+`\(abc\)\{2,3\}'
+     becomes `(abc){2,3}' when using extended regular expressions.  It
+     matches either `abcabc' or `abcabcabc'.
+
+`\(abc*\)\1'
+     becomes `(abc*)\1' when using extended regular expressions.
+     Backreferences must still be escaped when using extended regular
+     expressions.
+
+
+File: sed.info,  Node: Concept Index,  Next: Command and Option Index,  Prev: Extended regexps,  Up: Top
+
+Concept Index
+*************
+
+   This is a general index of all issues discussed in this manual, with
+the exception of the `sed' commands and command-line options.
+
+* Menu:
+
+* Additional reading about sed:          Other Resources.
+* ADDR1,+N:                              Addresses.
+* ADDR1,~N:                              Addresses.
+* Address, as a regular expression:      Addresses.
+* Address, last line:                    Addresses.
+* Address, numeric:                      Addresses.
+* Addresses, in sed scripts:             Addresses.
+* Append hold space to pattern space:    Other Commands.
+* Append next input line to pattern space: Other Commands.
+* Append pattern space to hold space:    Other Commands.
+* Appending text after a line:           Other Commands.
+* Backreferences, in regular expressions: The "s" Command.
+* Branch to a label, if s/// failed:     Extended Commands.
+* Branch to a label, if s/// succeeded:  Programming Commands.
+* Branch to a label, unconditionally:    Programming Commands.
+* Buffer spaces, pattern and hold:       Execution Cycle.
+* Bugs, reporting:                       Reporting Bugs.
+* Case-insensitive matching:             The "s" Command.
+* Caveat -- #n on first line:            Common Commands.
+* Command groups:                        Common Commands.
+* Comments, in scripts:                  Common Commands.
+* Conditional branch <1>:                Extended Commands.
+* Conditional branch:                    Programming Commands.
+* Copy hold space into pattern space:    Other Commands.
+* Copy pattern space into hold space:    Other Commands.
+* Delete first line from pattern space:  Other Commands.
+* Disabling autoprint, from command line: Invoking sed.
+* empty regular expression:              Addresses.
+* Evaluate Bourne-shell commands:        Extended Commands.
+* Evaluate Bourne-shell commands, after substitution: The "s" Command.
+* Exchange hold space with pattern space: Other Commands.
+* Excluding lines:                       Addresses.
+* Extended regular expressions, choosing: Invoking sed.
+* Extended regular expressions, syntax:  Extended regexps.
+* Files to be processed as input:        Invoking sed.
+* Flow of control in scripts:            Programming Commands.
+* Global substitution:                   The "s" Command.
+* GNU extensions, /dev/stderr file <1>:  The "s" Command.
+* GNU extensions, /dev/stderr file:      Other Commands.
+* GNU extensions, /dev/stdin file <1>:   Other Commands.
+* GNU extensions, /dev/stdin file:       Extended Commands.
+* GNU extensions, /dev/stdout file <1>:  Invoking sed.
+* GNU extensions, /dev/stdout file <2>:  The "s" Command.
+* GNU extensions, /dev/stdout file:      Other Commands.
+* GNU extensions, 0 address:             Addresses.
+* GNU extensions, 0,ADDR2 addressing:    Addresses.
+* GNU extensions, ADDR1,+N addressing:   Addresses.
+* GNU extensions, ADDR1,~N addressing:   Addresses.
+* GNU extensions, branch if s/// failed: Extended Commands.
+* GNU extensions, case modifiers in s commands: The "s" Command.
+* GNU extensions, checking for their presence: Extended Commands.
+* GNU extensions, disabling:             Invoking sed.
+* GNU extensions, evaluating Bourne-shell commands <1>: Extended Commands.
+* GNU extensions, evaluating Bourne-shell commands: The "s" Command.
+* GNU extensions, extended regular expressions: Invoking sed.
+* GNU extensions, g and NUMBER modifier interaction in s command: The "s" Command.
+* GNU extensions, I modifier <1>:        Addresses.
+* GNU extensions, I modifier:            The "s" Command.
+* GNU extensions, in-place editing <1>:  Reporting Bugs.
+* GNU extensions, in-place editing:      Invoking sed.
+* GNU extensions, L command:             Extended Commands.
+* GNU extensions, M modifier:            The "s" Command.
+* GNU extensions, modifiers and the empty regular expression: Addresses.
+* GNU extensions, N~M addresses:         Addresses.
+* GNU extensions, quitting silently:     Extended Commands.
+* GNU extensions, R command:             Extended Commands.
+* GNU extensions, reading a file a line at a time: Extended Commands.
+* GNU extensions, reformatting paragraphs: Extended Commands.
+* GNU extensions, returning an exit code <1>: Common Commands.
+* GNU extensions, returning an exit code: Extended Commands.
+* GNU extensions, setting line length:   Other Commands.
+* GNU extensions, special escapes <1>:   Reporting Bugs.
+* GNU extensions, special escapes:       Escapes.
+* GNU extensions, special two-address forms: Addresses.
+* GNU extensions, subprocesses <1>:      The "s" Command.
+* GNU extensions, subprocesses:          Extended Commands.
+* GNU extensions, to basic regular expressions <1>: Reporting Bugs.
+* GNU extensions, to basic regular expressions: Regular Expressions.
+* GNU extensions, two addresses supported by most commands: Other Commands.
+* GNU extensions, unlimited line length: Limitations.
+* GNU extensions, writing first line to a file: Extended Commands.
+* Goto, in scripts:                      Programming Commands.
+* Greedy regular expression matching:    Regular Expressions.
+* Grouping commands:                     Common Commands.
+* Hold space, appending from pattern space: Other Commands.
+* Hold space, appending to pattern space: Other Commands.
+* Hold space, copy into pattern space:   Other Commands.
+* Hold space, copying pattern space into: Other Commands.
+* Hold space, definition:                Execution Cycle.
+* Hold space, exchange with pattern space: Other Commands.
+* In-place editing:                      Reporting Bugs.
+* In-place editing, activating:          Invoking sed.
+* In-place editing, Perl-style backup file names: Invoking sed.
+* Inserting text before a line:          Other Commands.
+* Labels, in scripts:                    Programming Commands.
+* Last line, selecting:                  Addresses.
+* Line length, setting <1>:              Invoking sed.
+* Line length, setting:                  Other Commands.
+* Line number, printing:                 Other Commands.
+* Line selection:                        Addresses.
+* Line, selecting by number:             Addresses.
+* Line, selecting by regular expression match: Addresses.
+* Line, selecting last:                  Addresses.
+* List pattern space:                    Other Commands.
+* Mixing g and NUMBER modifiers in the s command: The "s" Command.
+* Next input line, append to pattern space: Other Commands.
+* Next input line, replace pattern space with: Common Commands.
+* Non-bugs, in-place editing:            Reporting Bugs.
+* Non-bugs, N command on the last line:  Reporting Bugs.
+* Non-bugs, regex syntax clashes:        Reporting Bugs.
+* Parenthesized substrings:              The "s" Command.
+* Pattern space, definition:             Execution Cycle.
+* Perl-style regular expressions, multiline: Addresses.
+* Portability, comments:                 Common Commands.
+* Portability, line length limitations:  Limitations.
+* Portability, N command on the last line: Reporting Bugs.
+* POSIXLY_CORRECT behavior, bracket expressions: Regular Expressions.
+* POSIXLY_CORRECT behavior, enabling:    Invoking sed.
+* POSIXLY_CORRECT behavior, escapes:     Escapes.
+* POSIXLY_CORRECT behavior, N command:   Reporting Bugs.
+* Print first line from pattern space:   Other Commands.
+* Printing line number:                  Other Commands.
+* Printing text unambiguously:           Other Commands.
+* Quitting <1>:                          Extended Commands.
+* Quitting:                              Common Commands.
+* Range of lines:                        Addresses.
+* Range with start address of zero:      Addresses.
+* Read next input line:                  Common Commands.
+* Read text from a file <1>:             Extended Commands.
+* Read text from a file:                 Other Commands.
+* Reformat pattern space:                Extended Commands.
+* Reformatting paragraphs:               Extended Commands.
+* Replace hold space with copy of pattern space: Other Commands.
+* Replace pattern space with copy of hold space: Other Commands.
+* Replacing all text matching regexp in a line: The "s" Command.
+* Replacing only Nth match of regexp in a line: The "s" Command.
+* Replacing selected lines with other text: Other Commands.
+* Requiring GNU sed:                     Extended Commands.
+* Script structure:                      sed Programs.
+* Script, from a file:                   Invoking sed.
+* Script, from command line:             Invoking sed.
+* sed program structure:                 sed Programs.
+* Selecting lines to process:            Addresses.
+* Selecting non-matching lines:          Addresses.
+* Several lines, selecting:              Addresses.
+* Slash character, in regular expressions: Addresses.
+* Spaces, pattern and hold:              Execution Cycle.
+* Special addressing forms:              Addresses.
+* Standard input, processing as input:   Invoking sed.
+* Stream editor:                         Introduction.
+* Subprocesses <1>:                      Extended Commands.
+* Subprocesses:                          The "s" Command.
+* Substitution of text, options:         The "s" Command.
+* Text, appending:                       Other Commands.
+* Text, deleting:                        Common Commands.
+* Text, insertion:                       Other Commands.
+* Text, printing:                        Common Commands.
+* Text, printing after substitution:     The "s" Command.
+* Text, writing to a file after substitution: The "s" Command.
+* Transliteration:                       Other Commands.
+* Unbuffered I/O, choosing:              Invoking sed.
+* Usage summary, printing:               Invoking sed.
+* Version, printing:                     Invoking sed.
+* Working on separate files:             Invoking sed.
+* Write first line to a file:            Extended Commands.
+* Write to a file:                       Other Commands.
+* Zero, as range start address:          Addresses.
+
+
+File: sed.info,  Node: Command and Option Index,  Prev: Concept Index,  Up: Top
+
+Command and Option Index
+************************
+
+   This is an alphabetical list of all `sed' commands and command-line
+options.
+
+* Menu:
+
+* # (comments):                          Common Commands.
+* --expression:                          Invoking sed.
+* --file:                                Invoking sed.
+* --help:                                Invoking sed.
+* --in-place:                            Invoking sed.
+* --line-length:                         Invoking sed.
+* --quiet:                               Invoking sed.
+* --regexp-extended:                     Invoking sed.
+* --silent:                              Invoking sed.
+* --unbuffered:                          Invoking sed.
+* --version:                             Invoking sed.
+* -e:                                    Invoking sed.
+* -f:                                    Invoking sed.
+* -i:                                    Invoking sed.
+* -l:                                    Invoking sed.
+* -n:                                    Invoking sed.
+* -n, forcing from within a script:      Common Commands.
+* -r:                                    Invoking sed.
+* -u:                                    Invoking sed.
+* : (label) command:                     Programming Commands.
+* = (print line number) command:         Other Commands.
+* a (append text lines) command:         Other Commands.
+* b (branch) command:                    Programming Commands.
+* c (change to text lines) command:      Other Commands.
+* D (delete first line) command:         Other Commands.
+* d (delete) command:                    Common Commands.
+* e (evaluate) command:                  Extended Commands.
+* G (appending Get) command:             Other Commands.
+* g (get) command:                       Other Commands.
+* H (append Hold) command:               Other Commands.
+* h (hold) command:                      Other Commands.
+* i (insert text lines) command:         Other Commands.
+* L (fLow paragraphs) command:           Extended Commands.
+* l (list unambiguously) command:        Other Commands.
+* N (append Next line) command:          Other Commands.
+* n (next-line) command:                 Common Commands.
+* P (print first line) command:          Other Commands.
+* p (print) command:                     Common Commands.
+* q (quit) command:                      Common Commands.
+* Q (silent Quit) command:               Extended Commands.
+* r (read file) command:                 Other Commands.
+* R (read line) command:                 Extended Commands.
+* s command, option flags:               The "s" Command.
+* T (test and branch if failed) command: Extended Commands.
+* t (test and branch if successful) command: Programming Commands.
+* v (version) command:                   Extended Commands.
+* w (write file) command:                Other Commands.
+* W (write first line) command:          Extended Commands.
+* x (eXchange) command:                  Other Commands.
+* y (transliterate) command:             Other Commands.
+* {} command grouping:                   Common Commands.
+
+
diff --git a/src/sed/doc/sed.texi b/src/sed/doc/sed.texi
new file mode 100644
index 0000000..02d80d6
--- /dev/null
+++ b/src/sed/doc/sed.texi
@@ -0,0 +1,4219 @@
+\input texinfo  @c -*-texinfo-*-
+@c Do not edit this file!! It is automatically generated from sed-in.texi.
+@c
+@c -- Stuff that needs adding: ----------------------------------------------
+@c (document the `;' command-separator)
+@c --------------------------------------------------------------------------
+@c Check for consistency: regexps in @code, text that they match in @samp.
+@c 
+@c Tips:
+@c    @command for command
+@c    @samp for command fragments: @samp{cat -s}
+@c    @code for sed commands and flags
+@c    Use ``quote'' not `quote' or "quote".
+@c
+@c %**start of header
+@setfilename sed.info
+@settitle sed, a stream editor
+@c %**end of header
+
+@c @smallbook
+
+@include version.texi
+
+@c Combine indices.
+@syncodeindex ky cp
+@syncodeindex pg cp
+@syncodeindex tp cp
+
+@defcodeindex op
+@syncodeindex op fn
+
+@include config.texi
+
+@copying
+This file documents version @value{VERSION} of
+@value{SSED}, a stream editor.
+
+Copyright @copyright{} 1998, 1999, 2001, 2002, 2003, 2004 Free
+Software Foundation, Inc.
+
+This document is released under the terms of the @acronym{GNU} Free
+Documentation License as published by the Free Software Foundation;
+either version 1.1, or (at your option) any later version.
+
+You should have received a copy of the @acronym{GNU} Free Documentation
+License along with @value{SSED}; see the file @file{COPYING.DOC}.
+If not, write to the Free Software Foundation, 59 Temple Place - Suite
+330, Boston, MA 02110-1301, USA.
+
+There are no Cover Texts and no Invariant Sections; this text, along
+with its equivalent in the printed manual, constitutes the Title Page.
+@end copying
+
+@setchapternewpage off
+
+@titlepage
+@title @command{sed}, a stream editor
+@subtitle version @value{VERSION}, @value{UPDATED}
+@author by Ken Pizzini, Paolo Bonzini
+
+@page
+@vskip 0pt plus 1filll
+Copyright @copyright{} 1998, 1999 Free Software Foundation, Inc.
+
+@insertcopying
+
+Published by the Free Software Foundation, @*
+51 Franklin Street, Fifth Floor @*
+Boston, MA 02110-1301, USA
+@end titlepage
+
+
+@node Top
+@top
+
+@ifnottex
+@insertcopying
+@end ifnottex
+
+@menu
+* Introduction::               Introduction
+* Invoking sed::               Invocation
+* sed Programs::               @command{sed} programs
+* Examples::                   Some sample scripts
+* Limitations::                Limitations and (non-)limitations of @value{SSED}
+* Other Resources::            Other resources for learning about @command{sed}
+* Reporting Bugs::             Reporting bugs
+
+* Extended regexps::           @command{egrep}-style regular expressions
+@ifset PERL
+* Perl regexps::               Perl-style regular expressions
+@end ifset
+
+* Concept Index::              A menu with all the topics in this manual.
+* Command and Option Index::   A menu with all @command{sed} commands and
+                               command-line options.
+
+@detailmenu
+--- The detailed node listing ---
+
+sed Programs:
+* Execution Cycle::                 How @command{sed} works
+* Addresses::                       Selecting lines with @command{sed}
+* Regular Expressions::             Overview of regular expression syntax
+* Common Commands::                 Often used commands
+* The "s" Command::                 @command{sed}'s Swiss Army Knife
+* Other Commands::                  Less frequently used commands
+* Programming Commands::            Commands for @command{sed} gurus
+* Extended Commands::               Commands specific of @value{SSED}
+* Escapes::                         Specifying special characters
+
+Examples:
+* Centering lines::
+* Increment a number::
+* Rename files to lower case::
+* Print bash environment::
+* Reverse chars of lines::
+* tac::                             Reverse lines of files
+* cat -n::                          Numbering lines
+* cat -b::                          Numbering non-blank lines
+* wc -c::                           Counting chars
+* wc -w::                           Counting words
+* wc -l::                           Counting lines
+* head::                            Printing the first lines
+* tail::                            Printing the last lines
+* uniq::                            Make duplicate lines unique
+* uniq -d::                         Print duplicated lines of input
+* uniq -u::                         Remove all duplicated lines
+* cat -s::                          Squeezing blank lines
+
+@ifset PERL
+Perl regexps::                      Perl-style regular expressions
+* Backslash::                       Introduces special sequences
+* Circumflex/dollar sign/period::   Behave specially with regard to new lines
+* Square brackets::                 Are a bit different in strange cases
+* Options setting::                 Toggle modifiers in the middle of a regexp
+* Non-capturing subpatterns::       Are not counted when backreferencing
+* Repetition::                      Allows for non-greedy matching
+* Backreferences::                  Allows for more than 10 back references
+* Assertions::                      Allows for complex look ahead matches
+* Non-backtracking subpatterns::    Often gives more performance
+* Conditional subpatterns::         Allows if/then/else branches
+* Recursive patterns::              For example to match parentheses
+* Comments::                        Because things can get complex...
+@end ifset
+
+@end detailmenu
+@end menu
+
+
+@node Introduction
+@chapter Introduction
+
+@cindex Stream editor
+@command{sed} is a stream editor.
+A stream editor is used to perform basic text
+transformations on an input stream
+(a file or input from a pipeline).
+While in some ways similar to an editor which
+permits scripted edits (such as @command{ed}),
+@command{sed} works by making only one pass over the
+input(s), and is consequently more efficient.
+But it is @command{sed}'s ability to filter text in a pipeline
+which particularly distinguishes it from other types of
+editors.
+
+
+@node Invoking sed
+@chapter Invocation
+
+Normally @command{sed} is invoked like this:
+
+@example
+sed SCRIPT INPUTFILE...
+@end example
+
+The full format for invoking @command{sed} is:
+
+@example
+sed OPTIONS... [SCRIPT] [INPUTFILE...]
+@end example
+
+If you do not specify @var{INPUTFILE}, or if @var{INPUTFILE} is @file{-},
+@command{sed} filters the contents of the standard input.  The @var{script}
+is actually the first non-option parameter, which @command{sed} specially
+considers a script and not an input file if (and only if) none of the
+other @var{options} specifies a script to be executed, that is if neither
+of the @option{-e} and @option{-f} options is specified.
+
+@command{sed} may be invoked with the following command-line options:
+
+@table @code
+@item --version
+@opindex --version
+@cindex Version, printing
+Print out the version of @command{sed} that is being run and a copyright notice,
+then exit.
+
+@item --help
+@opindex --help
+@cindex Usage summary, printing
+Print a usage message briefly summarizing these command-line options
+and the bug-reporting address,
+then exit.
+
+@item -n
+@itemx --quiet
+@itemx --silent
+@opindex -n
+@opindex --quiet
+@opindex --silent
+@cindex Disabling autoprint, from command line
+By default, @command{sed} prints out the pattern space
+at the end of each cycle through the script.
+These options disable this automatic printing,
+and @command{sed} only produces output when explicitly told to
+via the @code{p} command.
+
+@item -i[@var{SUFFIX}]
+@itemx --in-place[=@var{SUFFIX}]
+@opindex -i
+@opindex --in-place
+@cindex In-place editing, activating
+@cindex @value{SSEDEXT}, in-place editing
+This option specifies that files are to be edited in-place.
+@value{SSED} does this by creating a temporary file and
+sending output to this file rather than to the standard
+output.@footnote{This applies to commands such as @code{=},
+@code{a}, @code{c}, @code{i}, @code{l}, @code{p}.  You can
+still write to the standard output by using the @code{w}
+@cindex @value{SSEDEXT}, @file{/dev/stdout} file
+or @code{W} commands together with the @file{/dev/stdout}
+special file}.
+
+This option implies @option{-s}.
+
+When the end of the file is reached, the temporary file is
+renamed to the output file's original name.  The extension,
+if supplied, is used to modify the name of the old file
+before renaming the temporary file, thereby making a backup
+copy@footnote{Note that @value{SSED} creates the backup
+    file whether or not any output is actually changed.}).
+
+@cindex In-place editing, Perl-style backup file names
+This rule is followed: if the extension doesn't contain a @code{*},
+then it is appended to the end of the current filename as a
+suffix; if the extension does contain one or more @code{*}
+characters, then @emph{each} asterisk is replaced with the
+current filename.  This allows you to add a prefix to the
+backup file, instead of (or in addition to) a suffix, or
+even to place backup copies of the original files into another
+directory (provided the directory already exists).
+
+If no extension is supplied, the original file is
+overwritten without making a backup.
+
+@item -l @var{N}
+@itemx --line-length=@var{N}
+@opindex -l
+@opindex --line-length
+@cindex Line length, setting
+Specify the default line-wrap length for the @code{l} command.
+A length of 0 (zero) means to never wrap long lines.  If
+not specified, it is taken to be 70.
+
+@item --posix
+@cindex @value{SSEDEXT}, disabling
+@value{SSED} includes several extensions to @acronym{POSIX}
+sed.  In order to simplify writing portable scripts, this
+option disables all the extensions that this manual documents,
+including additional commands.
+@cindex @code{POSIXLY_CORRECT} behavior, enabling
+Most of the extensions accept @command{sed} programs that
+are outside the syntax mandated by @acronym{POSIX}, but some
+of them (such as the behavior of the @command{N} command
+described in @pxref{Reporting Bugs}) actually violate the
+standard.  If you want to disable only the latter kind of
+extension, you can set the @code{POSIXLY_CORRECT} variable
+to a non-empty value.
+
+@item -r
+@itemx --regexp-extended
+@opindex -r
+@opindex --regexp-extended
+@cindex Extended regular expressions, choosing
+@cindex @acronym{GNU} extensions, extended regular expressions
+Use extended regular expressions rather than basic
+regular expressions.  Extended regexps are those that
+@command{egrep} accepts; they can be clearer because they
+usually have less backslashes, but are a @acronym{GNU} extension
+and hence scripts that use them are not portable.
+@xref{Extended regexps, , Extended regular expressions}.
+
+@ifset PERL
+@item -R
+@itemx --regexp-perl
+@opindex -R
+@opindex --regexp-perl
+@cindex Perl-style regular expressions, choosing
+@cindex @value{SSEDEXT}, Perl-style regular expressions
+Use Perl-style regular expressions rather than basic
+regular expressions.  Perl-style regexps are extremely
+powerful but are a @value{SSED} extension and hence scripts that
+use it are not portable.  @xref{Perl regexps, ,
+Perl-style regular expressions}.
+@end ifset
+
+@item -s
+@itemx --separate
+@cindex Working on separate files
+By default, @command{sed} will consider the files specified on the
+command line as a single continuous long stream.  This @value{SSED}
+extension allows the user to consider them as separate files:
+range addresses (such as @samp{/abc/,/def/}) are not allowed
+to span several files, line numbers are relative to the start
+of each file, @code{$} refers to the last line of each file,
+and files invoked from the @code{R} commands are rewound at the
+start of each file.
+
+@item -u
+@itemx --unbuffered
+@opindex -u
+@opindex --unbuffered
+@cindex Unbuffered I/O, choosing
+Buffer both input and output as minimally as practical.
+(This is particularly useful if the input is coming from
+the likes of @samp{tail -f}, and you wish to see the transformed
+output as soon as possible.)
+
+@item -e @var{script}
+@itemx --expression=@var{script}
+@opindex -e
+@opindex --expression
+@cindex Script, from command line
+Add the commands in @var{script} to the set of commands to be
+run while processing the input.
+
+@item -f @var{script-file}
+@itemx --file=@var{script-file}
+@opindex -f
+@opindex --file
+@cindex Script, from a file
+Add the commands contained in the file @var{script-file}
+to the set of commands to be run while processing the input.
+
+@end table
+
+If no @option{-e}, @option{-f}, @option{--expression}, or @option{--file}
+options are given on the command-line,
+then the first non-option argument on the command line is
+taken to be the @var{script} to be executed.
+
+@cindex Files to be processed as input
+If any command-line parameters remain after processing the above,
+these parameters are interpreted as the names of input files to
+be processed.
+@cindex Standard input, processing as input
+A file name of @samp{-} refers to the standard input stream.
+The standard input will be processed if no file names are specified.
+
+
+@node sed Programs
+@chapter @command{sed} Programs
+
+@cindex @command{sed} program structure
+@cindex Script structure
+A @command{sed} program consists of one or more @command{sed} commands,
+passed in by one or more of the
+@option{-e}, @option{-f}, @option{--expression}, and @option{--file}
+options, or the first non-option argument if zero of these
+options are used.
+This document will refer to ``the'' @command{sed} script;
+this is understood to mean the in-order catenation
+of all of the @var{script}s and @var{script-file}s passed in.
+
+Each @code{sed} command consists of an optional address or
+address range, followed by a one-character command name
+and any additional command-specific code.
+
+@menu
+* Execution Cycle::          How @command{sed} works
+* Addresses::                Selecting lines with @command{sed}
+* Regular Expressions::      Overview of regular expression syntax
+* Common Commands::          Often used commands
+* The "s" Command::          @command{sed}'s Swiss Army Knife
+* Other Commands::           Less frequently used commands
+* Programming Commands::     Commands for @command{sed} gurus
+* Extended Commands::        Commands specific of @value{SSED}
+* Escapes::                  Specifying special characters
+@end menu
+
+
+@node Execution Cycle
+@section How @command{sed} Works
+
+@cindex Buffer spaces, pattern and hold
+@cindex Spaces, pattern and hold
+@cindex Pattern space, definition
+@cindex Hold space, definition
+@command{sed} maintains two data buffers: the active @emph{pattern} space,
+and the auxiliary @emph{hold} space. Both are initially empty.
+
+@command{sed} operates by performing the following cycle on each
+lines of input: first, @command{sed} reads one line from the input
+stream, removes any trailing newline, and places it in the pattern space.
+Then commands are executed; each command can have an address associated
+to it: addresses are a kind of condition code, and a command is only
+executed if the condition is verified before the command is to be
+executed.
+
+When the end of the script is reached, unless the @option{-n} option
+is in use, the contents of pattern space are printed out to the output
+stream, adding back the trailing newline if it was removed.@footnote{Actually,
+  if @command{sed} prints a line without the terminating newline, it will
+  nevertheless print the missing newline as soon as more text is sent to
+  the same output stream, which gives the ``least expected surprise''
+  even though it does not make commands like @samp{sed -n p} exactly
+  identical to @command{cat}.} Then the next cycle starts for the next
+input line.
+
+Unless special commands (like @samp{D}) are used, the pattern space is
+deleted between two cycles. The hold space, on the other hand, keeps
+its data between cycles (see commands @samp{h}, @samp{H}, @samp{x},
+@samp{g}, @samp{G} to move data between both buffers).
+
+
+@node Addresses
+@section Selecting lines with @command{sed}
+@cindex Addresses, in @command{sed} scripts
+@cindex Line selection
+@cindex Selecting lines to process
+
+Addresses in a @command{sed} script can be in any of the following forms:
+@table @code
+@item @var{number}
+@cindex Address, numeric
+@cindex Line, selecting by number
+Specifying a line number will match only that line in the input.
+(Note that @command{sed} counts lines continuously across all input files
+unless @option{-i} or @option{-s} options are specified.)
+
+@item @var{first}~@var{step}
+@cindex @acronym{GNU} extensions, @samp{@var{n}~@var{m}} addresses
+This @acronym{GNU} extension matches every @var{step}th line
+starting with line @var{first}.
+In particular, lines will be selected when there exists
+a non-negative @var{n} such that the current line-number equals
+@var{first} + (@var{n} * @var{step}).
+Thus, to select the odd-numbered lines,
+one would use @code{1~2};
+to pick every third line starting with the second, @samp{2~3} would be used;
+to pick every fifth line starting with the tenth, use @samp{10~5};
+and @samp{50~0} is just an obscure way of saying @code{50}.
+
+@item $
+@cindex Address, last line
+@cindex Last line, selecting
+@cindex Line, selecting last
+This address matches the last line of the last file of input, or
+the last line of each file when the @option{-i} or @option{-s} options
+are specified.
+
+@item /@var{regexp}/
+@cindex Address, as a regular expression
+@cindex Line, selecting by regular expression match
+This will select any line which matches the regular expression @var{regexp}.
+If @var{regexp} itself includes any @code{/} characters,
+each must be escaped by a backslash (@code{\}).
+
+@cindex empty regular expression
+@cindex @value{SSEDEXT}, modifiers and the empty regular expression
+The empty regular expression @samp{//} repeats the last regular
+expression match (the same holds if the empty regular expression is
+passed to the @code{s} command).  Note that modifiers to regular expressions
+are evaluated when the regular expression is compiled, thus it is invalid to
+specify them together with the empty regular expression.
+
+@item \%@var{regexp}%
+(The @code{%} may be replaced by any other single character.)
+
+@cindex Slash character, in regular expressions
+This also matches the regular expression @var{regexp},
+but allows one to use a different delimiter than @code{/}.
+This is particularly useful if the @var{regexp} itself contains
+a lot of slashes, since it avoids the tedious escaping of every @code{/}.
+If @var{regexp} itself includes any delimiter characters,
+each must be escaped by a backslash (@code{\}).
+
+@item /@var{regexp}/I
+@itemx \%@var{regexp}%I
+@cindex @acronym{GNU} extensions, @code{I} modifier
+@ifset PERL
+@cindex Perl-style regular expressions, case-insensitive
+@end ifset
+The @code{I} modifier to regular-expression matching is a @acronym{GNU}
+extension which causes the @var{regexp} to be matched in
+a case-insensitive manner.
+
+@item /@var{regexp}/M
+@itemx \%@var{regexp}%M
+@ifset PERL
+@cindex @value{SSEDEXT}, @code{M} modifier
+@end ifset
+@cindex Perl-style regular expressions, multiline
+The @code{M} modifier to regular-expression matching is a @value{SSED}
+extension which causes @code{^} and @code{$} to match respectively
+(in addition to the normal behavior) the empty string after a newline,
+and the empty string before a newline.  There are special character
+sequences
+@ifset PERL
+(@code{\A} and @code{\Z} in Perl mode, @code{\`} and @code{\'}
+in basic or extended regular expression modes)
+@end ifset
+@ifclear PERL
+(@code{\`} and @code{\'})
+@end ifclear
+which always match the beginning or the end of the buffer.
+@code{M} stands for @cite{multi-line}.
+
+@ifset PERL
+@item /@var{regexp}/S
+@itemx \%@var{regexp}%S
+@cindex @value{SSEDEXT}, @code{S} modifier
+@cindex Perl-style regular expressions, single line
+The @code{S} modifier to regular-expression matching is only valid
+in Perl mode and specifies that the dot character (@code{.}) will
+match the newline character too.  @code{S} stands for @cite{single-line}.
+@end ifset
+
+@ifset PERL
+@item /@var{regexp}/X
+@itemx \%@var{regexp}%X
+@cindex @value{SSEDEXT}, @code{X} modifier
+@cindex Perl-style regular expressions, extended
+The @code{X} modifier to regular-expression matching is also
+valid in Perl mode only.  If it is used, whitespace in the
+pattern (other than in a character class) and
+characters between a @kbd{#} outside a character class and the
+next newline character are ignored. An escaping backslash
+can be used to include a whitespace or @kbd{#} character as part
+of the pattern.
+@end ifset
+@end table
+
+If no addresses are given, then all lines are matched;
+if one address is given, then only lines matching that
+address are matched.
+
+@cindex Range of lines
+@cindex Several lines, selecting
+An address range can be specified by specifying two addresses
+separated by a comma (@code{,}).  An address range matches lines
+starting from where the first address matches, and continues
+until the second address matches (inclusively).
+
+If the second address is a @var{regexp}, then checking for the
+ending match will start with the line @emph{following} the
+line which matched the first address: a range will always
+span at least two lines (except of course if the input stream
+ends).
+
+If the second address is a @var{number} less than (or equal to)
+the line matching the first address, then only the one line is
+matched.
+
+@cindex Special addressing forms
+@cindex Range with start address of zero
+@cindex Zero, as range start address
+@cindex @var{addr1},+N
+@cindex @var{addr1},~N
+@cindex @acronym{GNU} extensions, special two-address forms
+@cindex @acronym{GNU} extensions, @code{0} address
+@cindex @acronym{GNU} extensions, 0,@var{addr2} addressing
+@cindex @acronym{GNU} extensions, @var{addr1},+@var{N} addressing
+@cindex @acronym{GNU} extensions, @var{addr1},~@var{N} addressing
+@value{SSED} also supports some special two-address forms; all these
+are @acronym{GNU} extensions:
+@table @code
+@item 0,/@var{regexp}/
+A line number of @code{0} can be used in an address specification like
+@code{0,/@var{regexp}/} so that @command{sed} will try to match
+@var{regexp} in the first input line too.  In other words,
+@code{0,/@var{regexp}/} is similar to @code{1,/@var{regexp}/},
+except that if @var{addr2} matches the very first line of input the
+@code{0,/@var{regexp}/} form will consider it to end the range, whereas
+the @code{1,/@var{regexp}/} form will match the beginning of its range and
+hence make the range span up to the @emph{second} occurrence of the
+regular expression.
+
+Note that this is the only place where the @code{0} address makes
+sense; there is no 0-th line and commands which are given the @code{0}
+address in any other way will give an error.
+
+@item @var{addr1},+@var{N}
+Matches @var{addr1} and the @var{N} lines following @var{addr1}.
+
+@item @var{addr1},~@var{N}
+Matches @var{addr1} and the lines following @var{addr1}
+until the next line whose input line number is a multiple of @var{N}.
+@end table
+
+@cindex Excluding lines
+@cindex Selecting non-matching lines
+Appending the @code{!} character to the end of an address
+specification negates the sense of the match.
+That is, if the @code{!} character follows an address range,
+then only lines which do @emph{not} match the address range
+will be selected.
+This also works for singleton addresses,
+and, perhaps perversely, for the null address.
+
+
+@node Regular Expressions
+@section Overview of Regular Expression Syntax
+
+To know how to use @command{sed}, people should understand regular
+expressions (@dfn{regexp} for short).  A regular expression
+is a pattern that is matched against a
+subject string from left to right.  Most characters are
+@dfn{ordinary}: they stand for
+themselves in a pattern, and match the corresponding characters
+in the subject.  As a trivial example, the pattern
+
+@example
+     The quick brown fox
+@end example
+
+@noindent
+matches a portion of a subject string that is identical to
+itself.  The power of regular expressions comes from the
+ability to include alternatives and repetitions in the pattern.
+These are encoded in the pattern by the use of @dfn{special characters},
+which do not stand for themselves but instead
+are interpreted in some special way.  Here is a brief description
+of regular expression syntax as used in @command{sed}.
+
+@table @code
+@item @var{char}
+A single ordinary character matches itself.
+
+@item *
+@cindex @acronym{GNU} extensions, to basic regular expressions
+Matches a sequence of zero or more instances of matches for the
+preceding regular expression, which must be an ordinary character, a
+special character preceded by @code{\}, a @code{.}, a grouped regexp
+(see below), or a bracket expression.  As a @acronym{GNU} extension, a
+postfixed regular expression can also be followed by @code{*}; for
+example, @code{a**} is equivalent to @code{a*}.  @acronym{POSIX}
+1003.1-2001 says that @code{*} stands for itself when it appears at
+the start of a regular expression or subexpression, but many
+non@acronym{GNU} implementations do not support this and portable
+scripts should instead use @code{\*} in these contexts.
+
+@item \+
+@cindex @acronym{GNU} extensions, to basic regular expressions
+As @code{*}, but matches one or more.  It is a @acronym{GNU} extension.
+
+@item \?
+@cindex @acronym{GNU} extensions, to basic regular expressions
+As @code{*}, but only matches zero or one.  It is a @acronym{GNU} extension.
+
+@item \@{@var{i}\@}
+As @code{*}, but matches exactly @var{i} sequences (@var{i} is a
+decimal integer; for portability, keep it between 0 and 255
+inclusive).
+
+@item \@{@var{i},@var{j}\@}
+Matches between @var{i} and @var{j}, inclusive, sequences.
+
+@item \@{@var{i},\@}
+Matches more than or equal to @var{i} sequences.
+
+@item \(@var{regexp}\)
+Groups the inner @var{regexp} as a whole, this is used to: 
+
+@itemize @bullet
+@item
+@cindex @acronym{GNU} extensions, to basic regular expressions
+Apply postfix operators, like @code{\(abcd\)*}:
+this will search for zero or more whole sequences 
+of @samp{abcd}, while @code{abcd*} would search
+for @samp{abc} followed by zero or more occurrences
+of @samp{d}.  Note that support for @code{\(abcd\)*} is
+required by @acronym{POSIX} 1003.1-2001, but many non-@acronym{GNU}
+implementations do not support it and hence it is not universally
+portable.         
+
+@item
+Use back references (see below).
+@end itemize
+
+@item .
+Matches any character, including newline.
+
+@item ^
+Matches the null string at beginning of line, i.e. what
+appears after the circumflex must appear at the 
+beginning of line. @code{^#include} will match only 
+lines where @samp{#include} is the first thing on line---if
+there are spaces before, for example, the match fails.
+@code{^} acts as a special character only at the beginning
+of the regular expression or subexpression (that is,
+after @code{\(} or @code{\|}).  Portable scripts should avoid
+@code{^} at the beginning of a subexpression, though, as
+@acronym{POSIX} allows implementations that treat @code{^} as
+an ordinary character in that context.
+
+
+@item $
+It is the same as @code{^}, but refers to end of line.
+@code{$} also acts as a special character only at the end
+of the regular expression or subexpression (that is, before @code{\)}
+or @code{\|}), and its use at the end of a subexpression is not
+portable.
+
+
+@item [@var{list}]
+@itemx [^@var{list}]
+Matches any single character in @var{list}: for example,
+@code{[aeiou]} matches all vowels.  A list may include
+sequences like @code{@var{char1}-@var{char2}}, which
+matches any character between (inclusive) @var{char1}
+and @var{char2}.
+
+A leading @code{^} reverses the meaning of @var{list}, so that
+it matches any single character @emph{not} in @var{list}.  To include
+@code{]} in the list, make it the first character (after
+the @code{^} if needed), to include @code{-} in the list,
+make it the first or last; to include @code{^} put
+it after the first character.
+
+@cindex @code{POSIXLY_CORRECT} behavior, bracket expressions
+The characters @code{$}, @code{*}, @code{.}, @code{[}, and @code{\}
+are normally not special within @var{list}.  For example, @code{[\*]}
+matches either @samp{\} or @samp{*}, because the @code{\} is not
+special here.  However, strings like @code{[.ch.]}, @code{[=a=]}, and
+@code{[:space:]} are special within @var{list} and represent collating
+symbols, equivalence classes, and character classes, respectively, and
+@code{[} is therefore special within @var{list} when it is followed by
+@code{.}, @code{=}, or @code{:}.  Also, when not in
+@env{POSIXLY_CORRECT} mode, special escapes like @code{\n} and
+@code{\t} are recognized within @var{list}.  @xref{Escapes}.
+
+@item @var{regexp1}\|@var{regexp2}
+@cindex @acronym{GNU} extensions, to basic regular expressions
+Matches either @var{regexp1} or @var{regexp2}.  Use
+parentheses to use complex alternative regular expressions.
+The matching process tries each alternative in turn, from
+left to right, and the first one that succeeds is used.
+It is a @acronym{GNU} extension.
+
+@item @var{regexp1}@var{regexp2}
+Matches the concatenation of @var{regexp1} and @var{regexp2}.
+Concatenation binds more tightly than @code{\|}, @code{^}, and
+@code{$}, but less tightly than the other regular expression
+operators.
+
+@item \@var{digit}
+Matches the @var{digit}-th @code{\(@dots{}\)} parenthesized
+subexpression in the regular expression.  This is called a @dfn{back
+reference}.  Subexpressions are implicity numbered by counting
+occurrences of @code{\(} left-to-right.
+
+@item \n
+Matches the newline character.
+
+@item \@var{char}
+Matches @var{char}, where @var{char} is one of @code{$},
+@code{*}, @code{.}, @code{[}, @code{\}, or @code{^}.
+Note that the only C-like
+backslash sequences that you can portably assume to be
+interpreted are @code{\n} and @code{\\}; in particular
+@code{\t} is not portable, and matches a @samp{t} under most
+implementations of @command{sed}, rather than a tab character.
+
+@end table
+
+@cindex Greedy regular expression matching
+Note that the regular expression matcher is greedy, i.e., matches
+are attempted from left to right and, if two or more matches are
+possible starting at the same character, it selects the longest.
+
+@noindent
+Examples:
+@table @samp
+@item abcdef
+Matches @samp{abcdef}.
+
+@item a*b
+Matches zero or more @samp{a}s followed by a single
+@samp{b}.  For example, @samp{b} or @samp{aaaaab}. 
+
+@item a\?b
+Matches @samp{b} or @samp{ab}.
+
+@item a\+b\+
+Matches one or more @samp{a}s followed by one or more
+@samp{b}s: @samp{ab} is the shortest possible match, but
+other examples are @samp{aaaab} or @samp{abbbbb} or
+@samp{aaaaaabbbbbbb}.
+
+@item .*
+@itemx .\+
+These two both match all the characters in a string;
+however, the first matches every string (including the empty
+string), while the second matches only strings containing
+at least one character.
+
+@item ^main.*(.*)
+his matches a string starting with @samp{main},
+followed by an opening and closing
+parenthesis.  The @samp{n}, @samp{(} and @samp{)} need not
+be adjacent.
+
+@item ^#
+This matches a string beginning with @samp{#}.
+
+@item \\$
+This matches a string ending with a single backslash.  The
+regexp contains two backslashes for escaping.
+
+@item \$
+Instead, this matches a string consisting of a single dollar sign,
+because it is escaped.
+
+@item [a-zA-Z0-9]
+In the C locale, this matches any @acronym{ASCII} letters or digits.
+
+@item [^ @kbd{tab}]\+
+(Here @kbd{tab} stands for a single tab character.)
+This matches a string of one or more
+characters, none of which is a space or a tab.
+Usually this means a word.
+
+@item ^\(.*\)\n\1$
+This matches a string consisting of two equal substrings separated by
+a newline.
+
+@item .\@{9\@}A$
+This matches nine characters followed by an @samp{A}.
+
+@item ^.\@{15\@}A
+This matches the start of a string that contains 16 characters,
+the last of which is an @samp{A}.
+
+@end table
+
+
+
+@node Common Commands
+@section Often-Used Commands
+
+If you use @command{sed} at all, you will quite likely want to know
+these commands.
+
+@table @code
+@item #
+[No addresses allowed.]
+
+@findex # (comments)
+@cindex Comments, in scripts
+The @code{#} character begins a comment;
+the comment continues until the next newline.
+
+@cindex Portability, comments
+If you are concerned about portability, be aware that
+some implementations of @command{sed} (which are not @sc{posix}
+conformant) may only support a single one-line comment,
+and then only when the very first character of the script is a @code{#}.
+
+@findex -n, forcing from within a script
+@cindex Caveat --- #n on first line
+Warning: if the first two characters of the @command{sed} script
+are @code{#n}, then the @option{-n} (no-autoprint) option is forced.
+If you want to put a comment in the first line of your script
+and that comment begins with the letter @samp{n}
+and you do not want this behavior,
+then be sure to either use a capital @samp{N},
+or place at least one space before the @samp{n}.
+
+@item q [@var{exit-code}]
+This command only accepts a single address.
+
+@findex q (quit) command
+@cindex @value{SSEDEXT}, returning an exit code
+@cindex Quitting
+Exit @command{sed} without processing any more commands or input.
+Note that the current pattern space is printed if auto-print is
+not disabled with the @option{-n} options.  The ability to return
+an exit code from the @command{sed} script is a @value{SSED} extension.
+
+@item d
+@findex d (delete) command
+@cindex Text, deleting
+Delete the pattern space;
+immediately start next cycle.
+
+@item p
+@findex p (print) command
+@cindex Text, printing
+Print out the pattern space (to the standard output).
+This command is usually only used in conjunction with the @option{-n}
+command-line option.
+
+@item n
+@findex n (next-line) command
+@cindex Next input line, replace pattern space with
+@cindex Read next input line
+If auto-print is not disabled, print the pattern space,
+then, regardless, replace the pattern space with the next line of input.
+If there is no more input then @command{sed} exits without processing
+any more commands.
+
+@item @{ @var{commands} @}
+@findex @{@} command grouping
+@cindex Grouping commands
+@cindex Command groups
+A group of commands may be enclosed between
+@code{@{} and @code{@}} characters.
+This is particularly useful when you want a group of commands
+to be triggered by a single address (or address-range) match.
+
+@end table
+
+@node The "s" Command
+@section The @code{s} Command
+
+The syntax of the @code{s} (as in substitute) command is
+@samp{s/@var{regexp}/@var{replacement}/@var{flags}}.  The @code{/}
+characters may be uniformly replaced by any other single
+character within any given @code{s} command.  The @code{/}
+character (or whatever other character is used in its stead)
+can appear in the @var{regexp} or @var{replacement}
+only if it is preceded by a @code{\} character.
+
+The @code{s} command is probably the most important in @command{sed}
+and has a lot of different options.  Its basic concept is simple:
+the @code{s} command attempts to match the pattern
+space against the supplied @var{regexp}; if the match is
+successful, then that portion of the pattern
+space which was matched is replaced with @var{replacement}.
+
+@cindex Backreferences, in regular expressions
+@cindex Parenthesized substrings
+The @var{replacement} can contain @code{\@var{n}} (@var{n} being
+a number from 1 to 9, inclusive) references, which refer to
+the portion of the match which is contained between the @var{n}th
+@code{\(} and its matching @code{\)}.
+Also, the @var{replacement} can contain unescaped @code{&}
+characters which reference the whole matched portion
+of the pattern space.
+@cindex @value{SSEDEXT}, case modifiers in @code{s} commands
+Finally, as a @value{SSED} extension, you can include a
+special sequence made of a backslash and one of the letters
+@code{L}, @code{l}, @code{U}, @code{u}, or @code{E}.
+The meaning is as follows:
+
+@table @code
+@item \L
+Turn the replacement
+to lowercase until a @code{\U} or @code{\E} is found,
+
+@item \l
+Turn the
+next character to lowercase,
+
+@item \U
+Turn the replacement to uppercase
+until a @code{\L} or @code{\E} is found,
+
+@item \u
+Turn the next character
+to uppercase,
+
+@item \E
+Stop case conversion started by @code{\L} or @code{\U}.
+@end table
+
+To include a literal @code{\}, @code{&}, or newline in the final
+replacement, be sure to precede the desired @code{\}, @code{&},
+or newline in the @var{replacement} with a @code{\}.
+
+@findex s command, option flags
+@cindex Substitution of text, options
+The @code{s} command can be followed by zero or more of the
+following @var{flags}:
+
+@table @code
+@item g
+@cindex Global substitution
+@cindex Replacing all text matching regexp in a line
+Apply the replacement to @emph{all} matches to the @var{regexp},
+not just the first.
+
+@item @var{number}
+@cindex Replacing only @var{n}th match of regexp in a line
+Only replace the @var{number}th match of the @var{regexp}.
+
+@cindex @acronym{GNU} extensions, @code{g} and @var{number} modifier interaction in @code{s} command
+@cindex Mixing @code{g} and @var{number} modifiers in the @code{s} command
+Note: the @sc{posix} standard does not specify what should happen
+when you mix the @code{g} and @var{number} modifiers,
+and currently there is no widely agreed upon meaning
+across @command{sed} implementations.
+For @value{SSED}, the interaction is defined to be:
+ignore matches before the @var{number}th,
+and then match and replace all matches from
+the @var{number}th on.
+
+@item p
+@cindex Text, printing after substitution
+If the substitution was made, then print the new pattern space.
+
+Note: when both the @code{p} and @code{e} options are specified,
+the relative ordering of the two produces very different results.
+In general, @code{ep} (evaluate then print) is what you want,
+but operating the other way round can be useful for debugging.
+For this reason, the current version of @value{SSED} interprets
+specially the presence of @code{p} options both before and after
+@code{e}, printing the pattern space before and after evaluation,
+while in general flags for the @code{s} command show their
+effect just once.  This behavior, although documented, might
+change in future versions.
+
+@item w @var{file-name}
+@cindex Text, writing to a file after substitution
+@cindex @value{SSEDEXT}, @file{/dev/stdout} file
+@cindex @value{SSEDEXT}, @file{/dev/stderr} file
+If the substitution was made, then write out the result to the named file.
+As a @value{SSED} extension, two special values of @var{file-name} are
+supported: @file{/dev/stderr}, which writes the result to the standard
+error, and @file{/dev/stdout}, which writes to the standard
+output.@footnote{This is equivalent to @code{p} unless the @option{-i}
+option is being used.}
+
+@item e
+@cindex Evaluate Bourne-shell commands, after substitution
+@cindex Subprocesses
+@cindex @value{SSEDEXT}, evaluating Bourne-shell commands
+@cindex @value{SSEDEXT}, subprocesses
+This command allows one to pipe input from a shell command
+into pattern space.  If a substitution was made, the command
+that is found in pattern space is executed and pattern space
+is replaced with its output.  A trailing newline is suppressed;
+results are undefined if the command to be executed contains
+a @sc{nul} character.  This is a @value{SSED} extension.
+
+@item I
+@itemx i
+@cindex @acronym{GNU} extensions, @code{I} modifier
+@cindex Case-insensitive matching
+@ifset PERL
+@cindex Perl-style regular expressions, case-insensitive
+@end ifset
+The @code{I} modifier to regular-expression matching is a @acronym{GNU}
+extension which makes @command{sed} match @var{regexp} in a
+case-insensitive manner.
+
+@item M
+@itemx m
+@cindex @value{SSEDEXT}, @code{M} modifier
+@ifset PERL
+@cindex Perl-style regular expressions, multiline
+@end ifset
+The @code{M} modifier to regular-expression matching is a @value{SSED}
+extension which causes @code{^} and @code{$} to match respectively
+(in addition to the normal behavior) the empty string after a newline,
+and the empty string before a newline.  There are special character
+sequences
+@ifset PERL
+(@code{\A} and @code{\Z} in Perl mode, @code{\`} and @code{\'}
+in basic or extended regular expression modes)
+@end ifset
+@ifclear PERL
+(@code{\`} and @code{\'})
+@end ifclear
+which always match the beginning or the end of the buffer.
+@code{M} stands for @cite{multi-line}.
+
+@ifset PERL
+@item S
+@itemx s
+@cindex @value{SSEDEXT}, @code{S} modifier
+@cindex Perl-style regular expressions, single line
+The @code{S} modifier to regular-expression matching is only valid
+in Perl mode and specifies that the dot character (@code{.}) will
+match the newline character too.  @code{S} stands for @cite{single-line}.
+@end ifset
+
+@ifset PERL
+@item X
+@itemx x
+@cindex @value{SSEDEXT}, @code{X} modifier
+@cindex Perl-style regular expressions, extended
+The @code{X} modifier to regular-expression matching is also
+valid in Perl mode only.  If it is used, whitespace in the
+pattern (other than in a character class) and
+characters between a @kbd{#} outside a character class and the
+next newline character are ignored. An escaping backslash
+can be used to include a whitespace or @kbd{#} character as part
+of the pattern.
+@end ifset
+@end table
+
+
+@node Other Commands
+@section Less Frequently-Used Commands
+
+Though perhaps less frequently used than those in the previous
+section, some very small yet useful @command{sed} scripts can be built with
+these commands.
+
+@table @code
+@item y/@var{source-chars}/@var{dest-chars}/
+(The @code{/} characters may be uniformly replaced by
+any other single character within any given @code{y} command.)
+
+@findex y (transliterate) command
+@cindex Transliteration
+Transliterate any characters in the pattern space which match
+any of the @var{source-chars} with the corresponding character
+in @var{dest-chars}.
+
+Instances of the @code{/} (or whatever other character is used in its stead),
+@code{\}, or newlines can appear in the @var{source-chars} or @var{dest-chars}
+lists, provide that each instance is escaped by a @code{\}.
+The @var{source-chars} and @var{dest-chars} lists @emph{must}
+contain the same number of characters (after de-escaping).
+
+@item a\
+@itemx @var{text}
+@cindex @value{SSEDEXT}, two addresses supported by most commands
+As a @acronym{GNU} extension, this command accepts two addresses.
+
+@findex a (append text lines) command
+@cindex Appending text after a line
+@cindex Text, appending
+Queue the lines of text which follow this command
+(each but the last ending with a @code{\},
+which are removed from the output)
+to be output at the end of the current cycle,
+or when the next input line is read.
+
+Escape sequences in @var{text} are processed, so you should
+use @code{\\} in @var{text} to print a single backslash.
+
+As a @acronym{GNU} extension, if between the @code{a} and the newline there is
+other than a whitespace-@code{\} sequence, then the text of this line,
+starting at the first non-whitespace character after the @code{a},
+is taken as the first line of the @var{text} block.
+(This enables a simplification in scripting a one-line add.)
+This extension also works with the @code{i} and @code{c} commands.
+
+@item i\
+@itemx @var{text}
+@cindex @value{SSEDEXT}, two addresses supported by most commands
+As a @acronym{GNU} extension, this command accepts two addresses.
+
+@findex i (insert text lines) command
+@cindex Inserting text before a line
+@cindex Text, insertion
+Immediately output the lines of text which follow this command
+(each but the last ending with a @code{\},
+which are removed from the output).
+
+@item c\
+@itemx @var{text}
+@findex c (change to text lines) command
+@cindex Replacing selected lines with other text
+Delete the lines matching the address or address-range,
+and output the lines of text which follow this command
+(each but the last ending with a @code{\},
+which are removed from the output)
+in place of the last line
+(or in place of each line, if no addresses were specified).
+A new cycle is started after this command is done,
+since the pattern space will have been deleted.
+
+@item =
+@cindex @value{SSEDEXT}, two addresses supported by most commands
+As a @acronym{GNU} extension, this command accepts two addresses.
+
+@findex = (print line number) command
+@cindex Printing line number
+@cindex Line number, printing
+Print out the current input line number (with a trailing newline).
+
+@item l @var{n}
+@findex l (list unambiguously) command
+@cindex List pattern space
+@cindex Printing text unambiguously
+@cindex Line length, setting
+@cindex @value{SSEDEXT}, setting line length
+Print the pattern space in an unambiguous form:
+non-printable characters (and the @code{\} character)
+are printed in C-style escaped form; long lines are split,
+with a trailing @code{\} character to indicate the split;
+the end of each line is marked with a @code{$}.
+
+@var{n} specifies the desired line-wrap length;
+a length of 0 (zero) means to never wrap long lines.  If omitted,
+the default as specified on the command line is used.  The @var{n}
+parameter is a @value{SSED} extension.
+
+@item r @var{filename}
+@cindex @value{SSEDEXT}, two addresses supported by most commands
+As a @acronym{GNU} extension, this command accepts two addresses.
+
+@findex r (read file) command
+@cindex Read text from a file
+@cindex @value{SSEDEXT}, @file{/dev/stdin} file
+Queue the contents of @var{filename} to be read and
+inserted into the output stream at the end of the current cycle,
+or when the next input line is read.
+Note that if @var{filename} cannot be read, it is treated as
+if it were an empty file, without any error indication.
+
+As a @value{SSED} extension, the special value @file{/dev/stdin}
+is supported for the file name, which reads the contents of the
+standard input.
+
+@item w @var{filename}
+@findex w (write file) command
+@cindex Write to a file
+@cindex @value{SSEDEXT}, @file{/dev/stdout} file
+@cindex @value{SSEDEXT}, @file{/dev/stderr} file
+Write the pattern space to @var{filename}.
+As a @value{SSED} extension, two special values of @var{file-name} are
+supported: @file{/dev/stderr}, which writes the result to the standard
+error, and @file{/dev/stdout}, which writes to the standard
+output.@footnote{This is equivalent to @code{p} unless the @option{-i}
+option is being used.}
+
+The file will be created (or truncated) before the
+first input line is read; all @code{w} commands
+(including instances of @code{w} flag on successful @code{s} commands)
+which refer to the same @var{filename} are output without
+closing and reopening the file.
+
+@item D
+@findex D (delete first line) command
+@cindex Delete first line from pattern space
+Delete text in the pattern space up to the first newline.
+If any text is left, restart cycle with the resultant
+pattern space (without reading a new line of input),
+otherwise start a normal new cycle.
+
+@item N
+@findex N (append Next line) command
+@cindex Next input line, append to pattern space
+@cindex Append next input line to pattern space
+Add a newline to the pattern space,
+then append the next line of input to the pattern space.
+If there is no more input then @command{sed} exits without processing
+any more commands.
+
+@item P
+@findex P (print first line) command
+@cindex Print first line from pattern space
+Print out the portion of the pattern space up to the first newline.
+
+@item h
+@findex h (hold) command
+@cindex Copy pattern space into hold space
+@cindex Replace hold space with copy of pattern space
+@cindex Hold space, copying pattern space into
+Replace the contents of the hold space with the contents of the pattern space.
+
+@item H
+@findex H (append Hold) command
+@cindex Append pattern space to hold space
+@cindex Hold space, appending from pattern space
+Append a newline to the contents of the hold space,
+and then append the contents of the pattern space to that of the hold space.
+
+@item g
+@findex g (get) command
+@cindex Copy hold space into pattern space
+@cindex Replace pattern space with copy of hold space
+@cindex Hold space, copy into pattern space
+Replace the contents of the pattern space with the contents of the hold space.
+
+@item G
+@findex G (appending Get) command
+@cindex Append hold space to pattern space
+@cindex Hold space, appending to pattern space
+Append a newline to the contents of the pattern space,
+and then append the contents of the hold space to that of the pattern space.
+
+@item x
+@findex x (eXchange) command
+@cindex Exchange hold space with pattern space
+@cindex Hold space, exchange with pattern space
+Exchange the contents of the hold and pattern spaces.
+
+@end table
+
+
+@node Programming Commands
+@section Commands for @command{sed} gurus
+
+In most cases, use of these commands indicates that you are
+probably better off programming in something like @command{awk}
+or Perl.  But occasionally one is committed to sticking
+with @command{sed}, and these commands can enable one to write
+quite convoluted scripts.
+
+@cindex Flow of control in scripts
+@table @code
+@item : @var{label}
+[No addresses allowed.]
+
+@findex : (label) command
+@cindex Labels, in scripts
+Specify the location of @var{label} for branch commands.
+In all other respects, a no-op.
+
+@item b @var{label}
+@findex b (branch) command
+@cindex Branch to a label, unconditionally
+@cindex Goto, in scripts
+Unconditionally branch to @var{label}.
+The @var{label} may be omitted, in which case the next cycle is started.
+
+@item t @var{label}
+@findex t (test and branch if successful) command
+@cindex Branch to a label, if @code{s///} succeeded
+@cindex Conditional branch
+Branch to @var{label} only if there has been a successful @code{s}ubstitution
+since the last input line was read or conditional branch was taken.
+The @var{label} may be omitted, in which case the next cycle is started.
+
+@end table
+
+@node Extended Commands
+@section Commands Specific to @value{SSED}
+
+These commands are specific to @value{SSED}, so you
+must use them with care and only when you are sure that
+hindering portability is not evil.  They allow you to check
+for @value{SSED} extensions or to do tasks that are required
+quite often, yet are unsupported by standard @command{sed}s.
+
+@table @code
+@item e [@var{command}]
+@findex e (evaluate) command
+@cindex Evaluate Bourne-shell commands
+@cindex Subprocesses
+@cindex @value{SSEDEXT}, evaluating Bourne-shell commands
+@cindex @value{SSEDEXT}, subprocesses
+This command allows one to pipe input from a shell command
+into pattern space.  Without parameters, the @code{e} command
+executes the command that is found in pattern space and
+replaces the pattern space with the output; a trailing newline
+is suppressed.
+
+If a parameter is specified, instead, the @code{e} command
+interprets it as a command and sends its output to the output stream
+(like @code{r} does).  The command can run across multiple
+lines, all but the last ending with a back-slash.
+
+In both cases, the results are undefined if the command to be
+executed contains a @sc{nul} character.
+
+@item L @var{n}
+@findex L (fLow paragraphs) command
+@cindex Reformat pattern space
+@cindex Reformatting paragraphs
+@cindex @value{SSEDEXT}, reformatting paragraphs
+@cindex @value{SSEDEXT}, @code{L} command
+This @value{SSED} extension fills and joins lines in pattern space
+to produce output lines of (at most) @var{n} characters, like
+@code{fmt} does; if @var{n} is omitted, the default as specified
+on the command line is used.  This command is considered a failed
+experiment and unless there is enough request (which seems unlikely)
+will be removed in future versions.
+
+@ignore
+Blank lines, spaces between words, and indentation are
+preserved in the output; successive input lines with different
+indentation are not joined; tabs are expanded to 8 columns.
+
+If the pattern space contains multiple lines, they are joined, but
+since the pattern space usually contains a single line, the behavior
+of a simple @code{L;d} script is the same as @samp{fmt -s} (i.e.,
+it does not join short lines to form longer ones).
+
+@var{n} specifies the desired line-wrap length; if omitted,
+the default as specified on the command line is used.
+@end ignore
+
+@item Q [@var{exit-code}]
+This command only accepts a single address.
+
+@findex Q (silent Quit) command
+@cindex @value{SSEDEXT}, quitting silently
+@cindex @value{SSEDEXT}, returning an exit code
+@cindex Quitting
+This command is the same as @code{q}, but will not print the
+contents of pattern space.  Like @code{q}, it provides the
+ability to return an exit code to the caller.
+
+This command can be useful because the only alternative ways
+to accomplish this apparently trivial function are to use
+the @option{-n} option (which can unnecessarily complicate
+your script) or resorting to the following snippet, which
+wastes time by reading the whole file without any visible effect:
+
+@example
+:eat
+$d       @i{Quit silently on the last line}
+N        @i{Read another line, silently}
+g        @i{Overwrite pattern space each time to save memory}
+b eat
+@end example
+
+@item R @var{filename}
+@findex R (read line) command
+@cindex Read text from a file
+@cindex @value{SSEDEXT}, reading a file a line at a time
+@cindex @value{SSEDEXT}, @code{R} command
+@cindex @value{SSEDEXT}, @file{/dev/stdin} file
+Queue a line of @var{filename} to be read and
+inserted into the output stream at the end of the current cycle,
+or when the next input line is read.
+Note that if @var{filename} cannot be read, or if its end is
+reached, no line is appended, without any error indication.
+
+As with the @code{r} command, the special value @file{/dev/stdin}
+is supported for the file name, which reads a line from the
+standard input.
+
+@item T @var{label}
+@findex T (test and branch if failed) command
+@cindex @value{SSEDEXT}, branch if @code{s///} failed
+@cindex Branch to a label, if @code{s///} failed
+@cindex Conditional branch
+Branch to @var{label} only if there have been no successful
+@code{s}ubstitutions since the last input line was read or
+conditional branch was taken. The @var{label} may be omitted,
+in which case the next cycle is started.
+
+@item v @var{version}
+@findex v (version) command
+@cindex @value{SSEDEXT}, checking for their presence
+@cindex Requiring @value{SSED}
+This command does nothing, but makes @command{sed} fail if
+@value{SSED} extensions are not supported, simply because other
+versions of @command{sed} do not implement it.  In addition, you
+can specify the version of @command{sed} that your script
+requires, such as @code{4.0.5}.  The default is @code{4.0}
+because that is the first version that implemented this command.
+
+This command enables all @value{SSEDEXT} even if
+@env{POSIXLY_CORRECT} is set in the environment.
+
+@item W @var{filename}
+@findex W (write first line) command
+@cindex Write first line to a file
+@cindex @value{SSEDEXT}, writing first line to a file
+Write to the given filename the portion of the pattern space up to
+the first newline.  Everything said under the @code{w} command about
+file handling holds here too.
+@end table
+
+@node Escapes
+@section @acronym{GNU} Extensions for Escapes in Regular Expressions
+
+@cindex @acronym{GNU} extensions, special escapes
+Until this chapter, we have only encountered escapes of the form
+@samp{\^}, which tell @command{sed} not to interpret the circumflex
+as a special character, but rather to take it literally.  For
+example, @samp{\*} matches a single asterisk rather than zero
+or more backslashes.
+
+@cindex @code{POSIXLY_CORRECT} behavior, escapes
+This chapter introduces another kind of escape@footnote{All
+the escapes introduced here are @acronym{GNU}
+extensions, with the exception of @code{\n}.  In basic regular
+expression mode, setting @code{POSIXLY_CORRECT} disables them inside
+bracket expressions.}---that
+is, escapes that are applied to a character or sequence of characters
+that ordinarily are taken literally, and that @command{sed} replaces
+with a special character.  This provides a way
+of encoding non-printable characters in patterns in a visible manner.
+There is no restriction on the appearance of non-printing characters
+in a @command{sed} script but when a script is being prepared in the
+shell or by text editing, it is usually easier to use one of
+the following escape sequences than the binary character it
+represents:
+
+The list of these escapes is:
+
+@table @code
+@item \a
+Produces or matches a @sc{bel} character, that is an ``alert'' (@sc{ascii} 7).
+
+@item \f
+Produces or matches a form feed (@sc{ascii} 12).
+
+@item \n
+Produces or matches a newline (@sc{ascii} 10).
+
+@item \r
+Produces or matches a carriage return (@sc{ascii} 13).
+
+@item \t
+Produces or matches a horizontal tab (@sc{ascii} 9).
+
+@item \v
+Produces or matches a so called ``vertical tab'' (@sc{ascii} 11).
+
+@item \c@var{x}
+Produces or matches @kbd{@sc{Control}-@var{x}}, where @var{x} is
+any character.  The precise effect of @samp{\c@var{x}} is as follows:
+if @var{x} is a lower case letter, it is converted to upper case.
+Then bit 6 of the character (hex 40) is inverted.  Thus @samp{\cz} becomes
+hex 1A, but @samp{\c@{} becomes hex 3B, while @samp{\c;} becomes hex 7B.
+
+@item \d@var{xxx}
+Produces or matches a character whose decimal @sc{ascii} value is @var{xxx}.
+
+@item \o@var{xxx}
+@ifset PERL
+@item \@var{xxx}
+@end ifset
+Produces or matches a character whose octal @sc{ascii} value is @var{xxx}.
+@ifset PERL
+The syntax without the @code{o} is active in Perl mode, while the one
+with the @code{o} is active in the normal or extended @sc{posix} regular
+expression modes.
+@end ifset
+
+@item \x@var{xx}
+Produces or matches a character whose hexadecimal @sc{ascii} value is @var{xx}.
+@end table
+
+@samp{\b} (backspace) was omitted because of the conflict with
+the existing ``word boundary'' meaning.
+
+Other escapes match a particular character class and are valid only in
+regular expressions:
+
+@table @code
+@item \w
+Matches any ``word'' character.  A ``word'' character is any
+letter or digit or the underscore character.
+
+@item \W
+Matches any ``non-word'' character.
+
+@item \b
+Matches a word boundary; that is it matches if the character
+to the left is a ``word'' character and the character to the
+right is a ``non-word'' character, or vice-versa.
+
+@item \B
+Matches everywhere but on a word boundary; that is it matches
+if the character to the left and the character to the right
+are either both ``word'' characters or both ``non-word''
+characters.
+
+@item \`
+Matches only at the start of pattern space.  This is different
+from @code{^} in multi-line mode.
+
+@item \'
+Matches only at the end of pattern space.  This is different
+from @code{$} in multi-line mode.
+
+@ifset PERL
+@item \G
+Match only at the start of pattern space or, when doing a global
+substitution using the @code{s///g} command and option, at
+the end-of-match position of the prior match.  For example,
+@samp{s/\Ga/Z/g} will change an initial run of @code{a}s to
+a run of @code{Z}s
+@end ifset
+@end table
+
+@node Examples
+@chapter Some Sample Scripts
+
+Here are some @command{sed} scripts to guide you in the art of mastering
+@command{sed}.
+
+@menu
+Some exotic examples:
+* Centering lines::
+* Increment a number::
+* Rename files to lower case::
+* Print bash environment::
+* Reverse chars of lines::
+
+Emulating standard utilities:
+* tac::                             Reverse lines of files
+* cat -n::                          Numbering lines
+* cat -b::                          Numbering non-blank lines
+* wc -c::                           Counting chars
+* wc -w::                           Counting words
+* wc -l::                           Counting lines
+* head::                            Printing the first lines
+* tail::                            Printing the last lines
+* uniq::                            Make duplicate lines unique
+* uniq -d::                         Print duplicated lines of input
+* uniq -u::                         Remove all duplicated lines
+* cat -s::                          Squeezing blank lines
+@end menu
+
+@node Centering lines
+@section Centering Lines
+
+This script centers all lines of a file on a 80 columns width.
+To change that width, the number in @code{\@{@dots{}\@}} must be
+replaced, and the number of added spaces also must be changed.
+
+Note how the buffer commands are used to separate parts in
+the regular expressions to be matched---this is a common
+technique.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+@group
+# Put 80 spaces in the buffer
+1 @{
+  x
+  s/^$/          /
+  s/^.*$/&&&&&&&&/
+  x
+@}
+@end group
+
+@group
+# del leading and trailing spaces
+y/@kbd{tab}/ /
+s/^ *//
+s/ *$//
+@end group
+
+@group
+# add a newline and 80 spaces to end of line
+G
+@end group
+
+@group
+# keep first 81 chars (80 + a newline)
+s/^\(.\@{81\@}\).*$/\1/
+@end group
+
+@group
+# \2 matches half of the spaces, which are moved to the beginning
+s/^\(.*\)\n\(.*\)\2/\2\1/
+@end group
+@end example
+@c end---------------------------------------------
+
+@node Increment a number
+@section Increment a Number
+
+This script is one of a few that demonstrate how to do arithmetic
+in @command{sed}.  This is indeed possible,@footnote{@command{sed} guru Greg
+Ubben wrote an implementation of the @command{dc} @sc{rpn} calculator!
+It is distributed together with sed.} but must be done manually.
+
+To increment one number you just add 1 to last digit, replacing
+it by the following digit.  There is one exception: when the digit
+is a nine the previous digits must be also incremented until you
+don't have a nine.
+
+This solution by Bruno Haible is very clever and smart because
+it uses a single buffer; if you don't have this limitation, the
+algorithm used in @ref{cat -n, Numbering lines}, is faster.
+It works by replacing trailing nines with an underscore, then
+using multiple @code{s} commands to increment the last digit,
+and then again substituting underscores with zeros.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+/[^0-9]/ d
+
+@group
+# replace all leading 9s by _ (any other character except digits, could
+# be used)
+:d
+s/9\(_*\)$/_\1/
+td
+@end group
+
+@group
+# incr last digit only.  The first line adds a most-significant
+# digit of 1 if we have to add a digit.
+#
+# The @code{tn} commands are not necessary, but make the thing
+# faster
+@end group
+
+@group
+s/^\(_*\)$/1\1/; tn
+s/8\(_*\)$/9\1/; tn
+s/7\(_*\)$/8\1/; tn
+s/6\(_*\)$/7\1/; tn
+s/5\(_*\)$/6\1/; tn
+s/4\(_*\)$/5\1/; tn
+s/3\(_*\)$/4\1/; tn
+s/2\(_*\)$/3\1/; tn
+s/1\(_*\)$/2\1/; tn
+s/0\(_*\)$/1\1/; tn
+@end group
+
+@group
+:n
+y/_/0/
+@end group
+@end example
+@c end---------------------------------------------
+
+@node Rename files to lower case
+@section Rename Files to Lower Case
+
+This is a pretty strange use of @command{sed}.  We transform text, and
+transform it to be shell commands, then just feed them to shell.
+Don't worry, even worse hacks are done when using @command{sed}; I have
+seen a script converting the output of @command{date} into a @command{bc}
+program!
+ 
+The main body of this is the @command{sed} script, which remaps the name
+from lower to upper (or vice-versa) and even checks out 
+if the remapped name is the same as the original name.
+Note how the script is parameterized using shell
+variables and proper quoting.
+
+@c start-------------------------------------------
+@example
+@group
+#! /bin/sh
+# rename files to lower/upper case... 
+#
+# usage: 
+#    move-to-lower * 
+#    move-to-upper * 
+# or
+#    move-to-lower -R .
+#    move-to-upper -R .
+#
+@end group
+
+@group
+help()
+@{
+	cat << eof
+Usage: $0 [-n] [-r] [-h] files...
+@end group
+
+@group
+-n      do nothing, only see what would be done
+-R      recursive (use find)
+-h      this message
+files   files to remap to lower case
+@end group
+
+@group
+Examples:
+       $0 -n *        (see if everything is ok, then...)
+       $0 *
+@end group
+
+       $0 -R .
+
+@group
+eof
+@}
+@end group
+
+@group
+apply_cmd='sh'
+finder='echo "$@@" | tr " " "\n"'
+files_only=
+@end group
+
+@group
+while :
+do
+    case "$1" in 
+        -n) apply_cmd='cat' ;;
+        -R) finder='find "$@@" -type f';;
+        -h) help ; exit 1 ;;
+        *) break ;;
+    esac
+    shift
+done
+@end group
+
+@group
+if [ -z "$1" ]; then
+        echo Usage: $0 [-h] [-n] [-r] files...
+        exit 1
+fi
+@end group
+
+@group
+LOWER='abcdefghijklmnopqrstuvwxyz'
+UPPER='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+@end group
+
+@group
+case `basename $0` in
+        *upper*) TO=$UPPER; FROM=$LOWER ;;
+        *)       FROM=$UPPER; TO=$LOWER ;;
+esac
+@end group
+	
+eval $finder | sed -n '
+
+@group
+# remove all trailing slashes
+s/\/*$//
+@end group
+
+@group
+# add ./ if there is no path, only a filename
+/\//! s/^/.\//
+@end group
+
+@group
+# save path+filename
+h
+@end group
+
+@group
+# remove path
+s/.*\///
+@end group
+
+@group
+# do conversion only on filename
+y/'$FROM'/'$TO'/
+@end group
+
+@group
+# now line contains original path+file, while
+# hold space contains the new filename
+x
+@end group
+
+@group
+# add converted file name to line, which now contains
+# path/file-name\nconverted-file-name
+G
+@end group
+
+@group
+# check if converted file name is equal to original file name,
+# if it is, do not print nothing
+/^.*\/\(.*\)\n\1/b
+@end group
+
+@group
+# now, transform path/fromfile\n, into
+# mv path/fromfile path/tofile and print it
+s/^\(.*\/\)\(.*\)\n\(.*\)$/mv "\1\2" "\1\3"/p
+@end group
+
+' | $apply_cmd
+@end example
+@c end---------------------------------------------
+
+@node Print bash environment
+@section Print @command{bash} Environment
+
+This script strips the definition of the shell functions
+from the output of the @command{set} Bourne-shell command.
+
+@c start-------------------------------------------
+@example
+#!/bin/sh
+
+@group
+set | sed -n '
+:x
+@end group
+
+@group
+@ifinfo
+# if no occurrence of "=()" print and load next line
+@end ifinfo
+@ifnotinfo
+# if no occurrence of @samp{=()} print and load next line
+@end ifnotinfo
+/=()/! @{ p; b; @}
+/ () $/! @{ p; b; @}
+@end group
+
+@group
+# possible start of functions section
+# save the line in case this is a var like FOO="() "
+h
+@end group
+
+@group
+# if the next line has a brace, we quit because
+# nothing comes after functions
+n
+/^@{/ q
+@end group
+
+@group
+# print the old line
+x; p
+@end group
+
+@group
+# work on the new line now
+x; bx
+'
+@end group
+@end example
+@c end---------------------------------------------
+
+@node Reverse chars of lines
+@section Reverse Characters of Lines
+
+This script can be used to reverse the position of characters
+in lines.  The technique moves two characters at a time, hence
+it is faster than more intuitive implementations.
+
+Note the @code{tx} command before the definition of the label.
+This is often needed to reset the flag that is tested by
+the @code{t} command.
+
+Imaginative readers will find uses for this script.  An example
+is reversing the output of @command{banner}.@footnote{This requires
+another script to pad the output of banner; for example
+
+@example
+#! /bin/sh
+
+banner -w $1 $2 $3 $4 |
+  sed -e :a -e '/^.\@{0,'$1'\@}$/ @{ s/$/ /; ba; @}' |
+  ~/sedscripts/reverseline.sed
+@end example
+}
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+/../! b
+
+@group
+# Reverse a line.  Begin embedding the line between two newlines
+s/^.*$/\
+&\
+/
+@end group
+
+@group
+# Move first character at the end.  The regexp matches until
+# there are zero or one characters between the markers
+tx
+:x
+s/\(\n.\)\(.*\)\(.\n\)/\3\2\1/
+tx
+@end group
+
+@group
+# Remove the newline markers
+s/\n//g
+@end group
+@end example
+@c end---------------------------------------------
+
+@node tac
+@section Reverse Lines of Files
+
+This one begins a series of totally useless (yet interesting)
+scripts emulating various Unix commands.  This, in particular,
+is a @command{tac} workalike.
+
+Note that on implementations other than @acronym{GNU} @command{sed}
+@ifset PERL
+and @value{SSED}
+@end ifset
+this script might easily overflow internal buffers.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+# reverse all lines of input, i.e. first line became last, ...
+
+@group
+# from the second line, the buffer (which contains all previous lines)
+# is *appended* to current line, so, the order will be reversed
+1! G
+@end group
+
+@group
+# on the last line we're done -- print everything
+$ p
+@end group
+
+@group
+# store everything on the buffer again
+h
+@end group
+@end example
+@c end---------------------------------------------
+
+@node cat -n
+@section Numbering Lines
+
+This script replaces @samp{cat -n}; in fact it formats its output
+exactly like @acronym{GNU} @command{cat} does.
+
+Of course this is completely useless and for two reasons:  first,
+because somebody else did it in C, second, because the following
+Bourne-shell script could be used for the same purpose and would
+be much faster:
+
+@c start-------------------------------------------
+@example
+@group
+#! /bin/sh
+sed -e "=" $@@ | sed -e '
+  s/^/      /
+  N
+  s/^ *\(......\)\n/\1  /
+'
+@end group
+@end example
+@c end---------------------------------------------
+
+It uses @command{sed} to print the line number, then groups lines two
+by two using @code{N}.  Of course, this script does not teach as much as
+the one presented below.
+
+The algorithm used for incrementing uses both buffers, so the line
+is printed as soon as possible and then discarded.  The number
+is split so that changing digits go in a buffer and unchanged ones go
+in the other; the changed digits are modified in a single step
+(using a @code{y} command).  The line number for the next line
+is then composed and stored in the hold space, to be used in the
+next iteration.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+@group
+# Prime the pump on the first line
+x
+/^$/ s/^.*$/1/
+@end group
+
+@group
+# Add the correct line number before the pattern
+G
+h
+@end group
+
+@group
+# Format it and print it
+s/^/      /
+s/^ *\(......\)\n/\1  /p
+@end group
+
+@group
+# Get the line number from hold space; add a zero
+# if we're going to add a digit on the next line
+g
+s/\n.*$//
+/^9*$/ s/^/0/
+@end group
+
+@group
+# separate changing/unchanged digits with an x
+s/.9*$/x&/
+@end group
+
+@group
+# keep changing digits in hold space
+h
+s/^.*x//
+y/0123456789/1234567890/
+x
+@end group
+
+@group
+# keep unchanged digits in pattern space
+s/x.*$//
+@end group
+
+@group
+# compose the new number, remove the newline implicitly added by G
+G
+s/\n//
+h
+@end group
+@end example
+@c end---------------------------------------------
+
+@node cat -b
+@section Numbering Non-blank Lines
+
+Emulating @samp{cat -b} is almost the same as @samp{cat -n}---we only
+have to select which lines are to be numbered and which are not.
+
+The part that is common to this script and the previous one is
+not commented to show how important it is to comment @command{sed}
+scripts properly...
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+@group
+/^$/ @{
+  p
+  b
+@}
+@end group
+
+@group
+# Same as cat -n from now
+x
+/^$/ s/^.*$/1/
+G
+h
+s/^/      /
+s/^ *\(......\)\n/\1  /p
+x
+s/\n.*$//
+/^9*$/ s/^/0/
+s/.9*$/x&/
+h
+s/^.*x//
+y/0123456789/1234567890/
+x
+s/x.*$//
+G
+s/\n//
+h
+@end group
+@end example
+@c end---------------------------------------------
+
+@node wc -c
+@section Counting Characters
+
+This script shows another way to do arithmetic with @command{sed}.
+In this case we have to add possibly large numbers, so implementing
+this by successive increments would not be feasible (and possibly
+even more complicated to contrive than this script).
+
+The approach is to map numbers to letters, kind of an abacus
+implemented with @command{sed}.  @samp{a}s are units, @samp{b}s are
+tens and so on: we simply add the number of characters
+on the current line as units, and then propagate the carry
+to tens, hundreds, and so on.
+
+As usual, running totals are kept in hold space.
+
+On the last line, we convert the abacus form back to decimal.
+For the sake of variety, this is done with a loop rather than
+with some 80 @code{s} commands@footnote{Some implementations
+have a limit of 199 commands per script}: first we
+convert units, removing @samp{a}s from the number; then we
+rotate letters so that tens become @samp{a}s, and so on
+until no more letters remain.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+@group
+# Add n+1 a's to hold space (+1 is for the newline)
+s/./a/g
+H
+x
+s/\n/a/
+@end group
+
+@group
+# Do the carry.  The t's and b's are not necessary,
+# but they do speed up the thing
+t a
+: a;  s/aaaaaaaaaa/b/g; t b; b done
+: b;  s/bbbbbbbbbb/c/g; t c; b done
+: c;  s/cccccccccc/d/g; t d; b done
+: d;  s/dddddddddd/e/g; t e; b done
+: e;  s/eeeeeeeeee/f/g; t f; b done
+: f;  s/ffffffffff/g/g; t g; b done
+: g;  s/gggggggggg/h/g; t h; b done
+: h;  s/hhhhhhhhhh//g
+@end group
+
+@group
+: done
+$! @{
+  h
+  b
+@}
+@end group
+
+# On the last line, convert back to decimal
+
+@group
+: loop
+/a/! s/[b-h]*/&0/
+s/aaaaaaaaa/9/
+s/aaaaaaaa/8/
+s/aaaaaaa/7/
+s/aaaaaa/6/
+s/aaaaa/5/
+s/aaaa/4/
+s/aaa/3/
+s/aa/2/
+s/a/1/
+@end group
+
+@group
+: next
+y/bcdefgh/abcdefg/
+/[a-h]/ b loop
+p
+@end group
+@end example
+@c end---------------------------------------------
+
+@node wc -w
+@section Counting Words
+
+This script is almost the same as the previous one, once each
+of the words on the line is converted to a single @samp{a}
+(in the previous script each letter was changed to an @samp{a}).
+
+It is interesting that real @command{wc} programs have optimized
+loops for @samp{wc -c}, so they are much slower at counting
+words rather than characters.  This script's bottleneck,
+instead, is arithmetic, and hence the word-counting one
+is faster (it has to manage smaller numbers).
+
+Again, the common parts are not commented to show the importance
+of commenting @command{sed} scripts.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+@group
+# Convert words to a's
+s/[ @kbd{tab}][ @kbd{tab}]*/ /g
+s/^/ /
+s/ [^ ][^ ]*/a /g
+s/ //g
+@end group
+
+@group
+# Append them to hold space
+H
+x
+s/\n//
+@end group
+
+@group
+# From here on it is the same as in wc -c.
+/aaaaaaaaaa/! bx;   s/aaaaaaaaaa/b/g
+/bbbbbbbbbb/! bx;   s/bbbbbbbbbb/c/g
+/cccccccccc/! bx;   s/cccccccccc/d/g
+/dddddddddd/! bx;   s/dddddddddd/e/g
+/eeeeeeeeee/! bx;   s/eeeeeeeeee/f/g
+/ffffffffff/! bx;   s/ffffffffff/g/g
+/gggggggggg/! bx;   s/gggggggggg/h/g
+s/hhhhhhhhhh//g
+:x
+$! @{ h; b; @}
+:y
+/a/! s/[b-h]*/&0/
+s/aaaaaaaaa/9/
+s/aaaaaaaa/8/
+s/aaaaaaa/7/
+s/aaaaaa/6/
+s/aaaaa/5/
+s/aaaa/4/
+s/aaa/3/
+s/aa/2/
+s/a/1/
+y/bcdefgh/abcdefg/
+/[a-h]/ by
+p
+@end group
+@end example
+@c end---------------------------------------------
+
+@node wc -l
+@section Counting Lines
+
+No strange things are done now, because @command{sed} gives us
+@samp{wc -l} functionality for free!!! Look:
+
+@c start-------------------------------------------
+@example
+@group
+#!/usr/bin/sed -nf
+$=
+@end group
+@end example
+@c end---------------------------------------------
+
+@node head
+@section Printing the First Lines
+
+This script is probably the simplest useful @command{sed} script.
+It displays the first 10 lines of input; the number of displayed
+lines is right before the @code{q} command.
+
+@c start-------------------------------------------
+@example
+@group
+#!/usr/bin/sed -f
+10q
+@end group
+@end example
+@c end---------------------------------------------
+
+@node tail
+@section Printing the Last Lines
+
+Printing the last @var{n} lines rather than the first is more complex
+but indeed possible.  @var{n} is encoded in the second line, before
+the bang character.
+
+This script is similar to the @command{tac} script in that it keeps the
+final output in the hold space and prints it at the end:
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+@group
+1! @{; H; g; @}
+1,10 !s/[^\n]*\n//
+$p
+h
+@end group
+@end example
+@c end---------------------------------------------
+
+Mainly, the scripts keeps a window of 10 lines and slides it
+by adding a line and deleting the oldest (the substitution command
+on the second line works like a @code{D} command but does not
+restart the loop).
+
+The ``sliding window'' technique is a very powerful way to write
+efficient and complex @command{sed} scripts, because commands like
+@code{P} would require a lot of work if implemented manually.
+
+To introduce the technique, which is fully demonstrated in the
+rest of this chapter and is based on the @code{N}, @code{P}
+and @code{D} commands, here is an implementation of @command{tail}
+using a simple ``sliding window.''
+
+This looks complicated but in fact the working is the same as
+the last script: after we have kicked in the appropriate number
+of lines, however, we stop using the hold space to keep inter-line
+state, and instead use @code{N} and @code{D} to slide pattern
+space by one line:
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+@group
+1h
+2,10 @{; H; g; @}
+$q
+1,9d
+N
+D
+@end group
+@end example
+@c end---------------------------------------------
+
+Note how the first, second and fourth line are inactive after
+the first ten lines of input.  After that, all the script does
+is: exiting on the last line of input, appending the next input
+line to pattern space, and removing the first line.
+
+@node uniq
+@section Make Duplicate Lines Unique
+
+This is an example of the art of using the @code{N}, @code{P}
+and @code{D} commands, probably the most difficult to master.
+
+@c start-------------------------------------------
+@example
+@group
+#!/usr/bin/sed -f
+h
+@end group
+
+@group
+:b
+# On the last line, print and exit
+$b
+N
+/^\(.*\)\n\1$/ @{
+    # The two lines are identical.  Undo the effect of
+    # the n command.
+    g
+    bb
+@}
+@end group
+
+@group
+# If the @code{N} command had added the last line, print and exit
+$b
+@end group
+
+@group
+# The lines are different; print the first and go
+# back working on the second.
+P
+D
+@end group
+@end example
+@c end---------------------------------------------
+
+As you can see, we mantain a 2-line window using @code{P} and @code{D}.
+This technique is often used in advanced @command{sed} scripts.
+
+@node uniq -d
+@section Print Duplicated Lines of Input
+
+This script prints only duplicated lines, like @samp{uniq -d}.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+@group
+$b
+N
+/^\(.*\)\n\1$/ @{
+    # Print the first of the duplicated lines
+    s/.*\n//
+    p
+@end group
+
+@group
+    # Loop until we get a different line
+    :b
+    $b
+    N
+    /^\(.*\)\n\1$/ @{
+        s/.*\n//
+        bb
+    @}
+@}
+@end group
+
+@group
+# The last line cannot be followed by duplicates
+$b
+@end group
+
+@group
+# Found a different one.  Leave it alone in the pattern space
+# and go back to the top, hunting its duplicates
+D
+@end group
+@end example
+@c end---------------------------------------------
+
+@node uniq -u
+@section Remove All Duplicated Lines
+
+This script prints only unique lines, like @samp{uniq -u}.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+@group
+# Search for a duplicate line --- until that, print what you find.
+$b
+N
+/^\(.*\)\n\1$/ ! @{
+    P
+    D
+@}
+@end group
+
+@group
+:c
+# Got two equal lines in pattern space.  At the
+# end of the file we simply exit
+$d
+@end group
+
+@group
+# Else, we keep reading lines with @code{N} until we
+# find a different one
+s/.*\n//
+N
+/^\(.*\)\n\1$/ @{
+    bc
+@}
+@end group
+
+@group
+# Remove the last instance of the duplicate line
+# and go back to the top
+D
+@end group
+@end example
+@c end---------------------------------------------
+
+@node cat -s
+@section Squeezing Blank Lines
+
+As a final example, here are three scripts, of increasing complexity
+and speed, that implement the same function as @samp{cat -s}, that is
+squeezing blank lines.
+
+The first leaves a blank line at the beginning and end if there are
+some already.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+@group
+# on empty lines, join with next
+# Note there is a star in the regexp
+:x
+/^\n*$/ @{
+N
+bx
+@}
+@end group
+
+@group
+# now, squeeze all '\n', this can be also done by:
+# s/^\(\n\)*/\1/
+s/\n*/\
+/
+@end group
+@end example
+@c end---------------------------------------------
+
+This one is a bit more complex and removes all empty lines
+at the beginning.  It does leave a single blank line at end
+if one was there.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -f
+
+@group
+# delete all leading empty lines
+1,/^./@{
+/./!d
+@}
+@end group
+
+@group
+# on an empty line we remove it and all the following
+# empty lines, but one
+:x
+/./!@{
+N
+s/^\n$//
+tx
+@}
+@end group
+@end example
+@c end---------------------------------------------
+
+This removes leading and trailing blank lines.  It is also the
+fastest.  Note that loops are completely done with @code{n} and
+@code{b}, without relying on @command{sed} to restart the
+the script automatically at the end of a line.
+
+@c start-------------------------------------------
+@example
+#!/usr/bin/sed -nf
+
+@group
+# delete all (leading) blanks
+/./!d
+@end group
+
+@group
+# get here: so there is a non empty
+:x
+# print it
+p
+# get next
+n
+# got chars? print it again, etc... 
+/./bx
+@end group
+
+@group
+# no, don't have chars: got an empty line
+:z
+# get next, if last line we finish here so no trailing
+# empty lines are written
+n
+# also empty? then ignore it, and get next... this will
+# remove ALL empty lines
+/./!bz
+@end group
+
+@group
+# all empty lines were deleted/ignored, but we have a non empty.  As
+# what we want to do is to squeeze, insert a blank line artificially
+i\
+@end group
+
+bx
+@end example
+@c end---------------------------------------------
+
+@node Limitations
+@chapter @value{SSED}'s Limitations and Non-limitations
+
+@cindex @acronym{GNU} extensions, unlimited line length
+@cindex Portability, line length limitations
+For those who want to write portable @command{sed} scripts,
+be aware that some implementations have been known to
+limit line lengths (for the pattern and hold spaces)
+to be no more than 4000 bytes.
+The @sc{posix} standard specifies that conforming @command{sed}
+implementations shall support at least 8192 byte line lengths.
+@value{SSED} has no built-in limit on line length;
+as long as it can @code{malloc()} more (virtual) memory,
+you can feed or construct lines as long as you like.
+
+However, recursion is used to handle subpatterns and indefinite
+repetition.  This means that the available stack space may limit
+the size of the buffer that can be processed by certain patterns.
+
+@ifset PERL
+There are some size limitations in the regular expression
+matcher but it is hoped that they will never in practice
+be relevant.  The maximum length of a compiled pattern
+is 65539 (sic) bytes.  All values in repeating quantifiers
+must be less than 65536.  The maximum nesting depth of
+all parenthesized subpatterns, including capturing and
+non-capturing subpatterns@footnote{The
+distinction is meaningful when referring to Perl-style
+regular expressions.}, assertions, and other types of
+subpattern, is 200.
+
+Also, @value{SSED} recognizes the @sc{posix} syntax
+@code{[.@var{ch}.]} and @code{[=@var{ch}=]}
+where @var{ch} is a ``collating element'', but these
+are not supported, and an error is given if they are
+encountered.
+
+Here are a few distinctions between the real Perl-style
+regular expressions and those that @option{-R} recognizes.
+
+@enumerate
+@item
+Lookahead assertions do not allow repeat quantifiers after them
+Perl permits them, but they do not mean what you
+might think. For example, @samp{(?!a)@{3@}} does not assert that the
+next three characters are not @samp{a}. It just asserts three times that the
+next character is not @samp{a} --- a waste of time and nothing else.
+
+@item
+Capturing subpatterns that occur inside  negative  lookahead
+head  assertions  are  counted,  but  their  entries are counted
+as empty in the second half of an @code{s} command.
+Perl sets its numerical variables from any such patterns
+that are matched before the assertion fails to match
+something (thereby succeeding), but only if the negative
+lookahead assertion contains just one branch.
+
+@item
+The following Perl escape sequences are not supported:
+@samp{\l}, @samp{\u}, @samp{\L}, @samp{\U}, @samp{\E},
+@samp{\Q}. In fact these are implemented by Perl's general
+string-handling and are not part of its pattern matching engine.
+
+@item
+The Perl @samp{\G} assertion is not supported as it is not
+relevant to single pattern matches.
+
+@item
+Fairly obviously, @value{SSED} does not support the @samp{(?@{code@})}
+and @samp{(?p@{code@})} constructions. However, there is some experimental
+support for recursive patterns using the non-Perl item @samp{(?R)}.
+
+@item
+There are at the time of writing some oddities in Perl
+5.005_02 concerned with the settings of captured strings
+when part of a pattern is repeated. For example, matching
+@samp{aba} against the pattern @samp{/^(a(b)?)+$/} sets
+@samp{$2}@footnote{@samp{$2} would be @samp{\2} in @value{SSED}.}
+to the value @samp{b}, but matching @samp{aabbaa}
+against @samp{/^(aa(bb)?)+$/} leaves @samp{$2}
+unset.  However, if the pattern is changed to
+@samp{/^(aa(b(b))?)+$/} then @samp{$2} (and @samp{$3}) are set.
+In Perl 5.004 @samp{$2} is set in both cases, and that is also
+true of @value{SSED}.
+
+@item
+Another as yet unresolved discrepancy is that in Perl
+5.005_02 the pattern @samp{/^(a)?(?(1)a|b)+$/} matches
+the string @samp{a}, whereas in @value{SSED} it does not.
+However, in both Perl and @value{SSED} @samp{/^(a)?a/} matched
+against @samp{a} leaves $1 unset.
+@end enumerate
+@end ifset
+
+@node Other Resources
+@chapter Other Resources for Learning About @command{sed}
+
+@cindex Additional reading about @command{sed}
+In addition to several books that have been written about @command{sed}
+(either specifically or as chapters in books which discuss
+shell programming), one can find out more about @command{sed}
+(including suggestions of a few books) from the FAQ
+for the @code{sed-users} mailing list, available from any of:
+@display
+ @uref{http://www.student.northpark.edu/pemente/sed/sedfaq.html}
+ @uref{http://sed.sf.net/grabbag/tutorials/sedfaq.html}
+@end display
+
+Also of interest are
+@uref{http://www.student.northpark.edu/pemente/sed/index.htm}
+and @uref{http://sed.sf.net/grabbag},
+which include @command{sed} tutorials and other @command{sed}-related goodies.
+
+The @code{sed-users} mailing list itself maintained by Sven Guckes.
+To subscribe, visit @uref{http://groups.yahoo.com} and search
+for the @code{sed-users} mailing list.
+
+@node Reporting Bugs
+@chapter Reporting Bugs
+
+@cindex Bugs, reporting
+Email bug reports to @email{bonzini@@gnu.org}.
+Be sure to include the word ``sed'' somewhere in the @code{Subject:} field.
+Also, please include the output of @samp{sed --version} in the body
+of your report if at all possible.
+
+Please do not send a bug report like this:
+
+@example
+@i{while building frobme-1.3.4}
+$ configure 
+@error{} sed: file sedscr line 1: Unknown option to 's'
+@end example
+
+If @value{SSED} doesn't configure your favorite package, take a
+few extra minutes to identify the specific problem and make a stand-alone
+test case.  Unlike other programs such as C compilers, making such test
+cases for @command{sed} is quite simple.
+
+A stand-alone test case includes all the data necessary to perform the
+test, and the specific invocation of @command{sed} that causes the problem.
+The smaller a stand-alone test case is, the better.  A test case should
+not involve something as far removed from @command{sed} as ``try to configure
+frobme-1.3.4''.  Yes, that is in principle enough information to look
+for the bug, but that is not a very practical prospect.
+
+Here are a few commonly reported bugs that are not bugs.
+
+@table @asis
+@item @code{N} command on the last line
+@cindex Portability, @code{N} command on the last line
+@cindex Non-bugs, @code{N} command on the last line
+
+Most versions of @command{sed} exit without printing anything when
+the @command{N} command is issued on the last line of a file.
+@value{SSED} prints pattern space before exiting unless of course
+the @command{-n} command switch has been specified.  This choice is
+by design.
+
+For example, the behavior of
+@example
+sed N foo bar
+@end example
+@noindent
+would depend on whether foo has an even or an odd number of
+lines@footnote{which is the actual ``bug'' that prompted the
+change in behavior}.  Or, when writing a script to read the
+next few lines following a pattern match, traditional
+implementations of @code{sed} would force you to write
+something like
+@example
+/foo/@{ $!N; $!N; $!N; $!N; $!N; $!N; $!N; $!N; $!N @}
+@end example
+@noindent
+instead of just
+@example
+/foo/@{ N;N;N;N;N;N;N;N;N; @}
+@end example
+ 
+@cindex @code{POSIXLY_CORRECT} behavior, @code{N} command
+In any case, the simplest workaround is to use @code{$d;N} in
+scripts that rely on the traditional behavior, or to set
+the @code{POSIXLY_CORRECT} variable to a non-empty value.
+
+@item Regex syntax clashes (problems with backslashes)
+@cindex @acronym{GNU} extensions, to basic regular expressions
+@cindex Non-bugs, regex syntax clashes
+@command{sed} uses the @sc{posix} basic regular expression syntax.  According to
+the standard, the meaning of some escape sequences is undefined in
+this syntax;  notable in the case of @command{sed} are @code{\|},
+@code{\+}, @code{\?}, @code{\`}, @code{\'}, @code{\<},
+@code{\>}, @code{\b}, @code{\B}, @code{\w}, and @code{\W}.
+
+As in all @acronym{GNU} programs that use @sc{posix} basic regular
+expressions, @command{sed} interprets these escape sequences as special
+characters.  So, @code{x\+} matches one or more occurrences of @samp{x}.
+@code{abc\|def} matches either @samp{abc} or @samp{def}.
+
+This syntax may cause problems when running scripts written for other
+@command{sed}s.  Some @command{sed} programs have been written with the
+assumption that @code{\|} and @code{\+} match the literal characters
+@code{|} and @code{+}.  Such scripts must be modified by removing the
+spurious backslashes if they are to be used with modern implementations
+of @command{sed}, like
+@ifset PERL
+@value{SSED} or
+@end ifset
+@acronym{GNU} @command{sed}.
+
+On the other hand, some scripts use s|abc\|def||g to remove occurrences
+of @emph{either} @code{abc} or @code{def}.  While this worked until
+@command{sed} 4.0.x, newer versions interpret this as removing the
+string @code{abc|def}.  This is again undefined behavior according to
+@acronym{POSIX}, and this interpretation is arguably more robust: older
+@command{sed}s, for example, required that the regex matcher parsed
+@code{\/} as @code{/} in the common case of escaping a slash, which is
+again undefined behavior; the new behavior avoids this, and this is good
+because the regex matcher is only partially under our control.
+
+@cindex @acronym{GNU} extensions, special escapes
+In addition, this version of @command{sed} supports several escape characters
+(some of which are multi-character) to insert non-printable characters
+in scripts (@code{\a}, @code{\c}, @code{\d}, @code{\o}, @code{\r},
+@code{\t}, @code{\v}, @code{\x}).  These can cause similar problems
+with scripts written for other @command{sed}s.
+
+@item @option{-i} clobbers read-only files
+@cindex In-place editing
+@cindex @value{SSEDEXT}, in-place editing
+@cindex Non-bugs, in-place editing
+
+In short, @samp{sed -i} will let you delete the contents of
+a read-only file, and in general the @option{-i} option
+(@pxref{Invoking sed, , Invocation}) lets you clobber
+protected files.  This is not a bug, but rather a consequence
+of how the Unix filesystem works.
+
+The permissions on a file say what can happen to the data
+in that file, while the permissions on a directory say what can
+happen to the list of files in that directory.  @samp{sed -i}
+will not ever open for writing  a file that is already on disk.
+Rather, it will work on a temporary file that is finally renamed
+to the original name: if you rename or delete files, you're actually
+modifying the contents of the directory, so the operation depends on
+the permissions of the directory, not of the file.  For this same
+reason, @command{sed} does not let you use @option{-i} on a writeable file
+in a read-only directory (but unbelievably nobody reports that as a
+bug@dots{}).
+
+@item @code{0a} does not work (gives an error)
+There is no line 0.  0 is a special address that is only used to treat
+addresses like @code{0,/@var{RE}/} as active when the script starts: if
+you write @code{1,/abc/d} and the first line includes the word @samp{abc},
+then that match would be ignored because address ranges must span at least
+two lines (barring the end of the file); but what you probably wanted is
+to delete every line up to the first one including @samp{abc}, and this
+is obtained with @code{0,/abc/d}.
+
+@ifclear PERL
+@item @code{[a-z]} is case insensitive
+You are encountering problems with locales.  POSIX mandates that @code{[a-z]}
+uses the current locale's collation order -- in C parlance, that means using
+@code{strcoll(3)} instead of @code{strcmp(3)}.  Some locales have a
+case-insensitive collation order, others don't: one of those that have
+problems is Estonian.
+
+Another problem is that @code{[a-z]} tries to use collation symbols.
+This only happens if you are on the @acronym{GNU} system, using
+@acronym{GNU} libc's regular expression matcher instead of compiling the
+one supplied with @acronym{GNU} sed.  In a Danish locale, for example,
+the regular expression @code{^[a-z]$} matches the string @samp{aa},
+because this is a single collating symbol that comes after @samp{a}
+and before @samp{b}; @samp{ll} behaves similarly in Spanish
+locales, or @samp{ij} in Dutch locales.
+
+To work around these problems, which may cause bugs in shell scripts, set
+the @env{LC_COLLATE} and @env{LC_CTYPE} environment variables to @samp{C}.
+@end ifclear
+@end table
+
+
+@node Extended regexps
+@appendix Extended regular expressions
+@cindex Extended regular expressions, syntax
+
+The only difference between basic and extended regular expressions is in
+the behavior of a few characters: @samp{?}, @samp{+}, parentheses,
+and braces (@samp{@{@}}).  While basic regular expressions require
+these to be escaped if you want them to behave as special characters,
+when using extended regular expressions you must escape them if
+you want them @emph{to match a literal character}.
+
+@noindent
+Examples:
+@table @code
+@item abc?
+becomes @samp{abc\?} when using extended regular expressions.  It matches
+the literal string @samp{abc?}.
+
+@item c\+
+becomes @samp{c+} when using extended regular expressions.  It matches
+one or more @samp{c}s.
+
+@item a\@{3,\@}
+becomes @samp{a@{3,@}} when using extended regular expressions.  It matches
+three or more @samp{a}s.
+
+@item \(abc\)\@{2,3\@}
+becomes @samp{(abc)@{2,3@}} when using extended regular expressions.  It
+matches either @samp{abcabc} or @samp{abcabcabc}.
+
+@item \(abc*\)\1
+becomes @samp{(abc*)\1} when using extended regular expressions.
+Backreferences must still be escaped when using extended regular
+expressions.
+@end table
+
+@ifset PERL
+@node Perl regexps
+@appendix Perl-style regular expressions
+@cindex Perl-style regular expressions, syntax
+
+@emph{This part is taken from the @file{pcre.txt} file distributed together
+with the free @sc{pcre} regular expression matcher; it was written by Philip Hazel.}
+
+Perl introduced several extensions to regular expressions, some
+of them incompatible with the syntax of regular expressions
+accepted by Emacs and other @acronym{GNU} tools (whose matcher was
+based on the Emacs matcher).  @value{SSED} implements
+both kinds of extensions.
+
+@iftex
+Summarizing, we have:
+
+@itemize @bullet
+@item
+A backslash can introduce several special sequences
+
+@item
+The circumflex, dollar sign, and period characters behave specially 
+with regard to new lines
+
+@item
+Strange uses of square brackets are parsed differently
+
+@item
+You can toggle modifiers in the middle of a regular expression
+
+@item
+You can specify that a subpattern does not count when numbering backreferences
+
+@item
+@cindex Greedy regular expression matching
+You can specify greedy or non-greedy matching
+
+@item
+You can have more than ten back references
+
+@item
+You can do complex look aheads and look behinds (in the spirit of
+@code{\b}, but with subpatterns).
+
+@item
+You can often improve performance by avoiding that @command{sed} wastes
+time with backtracking
+
+@item
+You can have if/then/else branches
+
+@item
+You can do recursive matches, for example to look for unbalanced parentheses
+
+@item
+You can have comments and non-significant whitespace, because things can
+get complex...
+@end itemize
+
+Most of these extensions are introduced by the special @code{(?}
+sequence, which gives special meanings to parenthesized groups.
+@end iftex
+@menu
+Other extensions can be roughly subdivided in two categories
+On one hand Perl introduces several more escaped sequences
+(that is, sequences introduced by a backslash).  On the other
+hand, it specifies that if a question mark follows an open
+parentheses it should give a special meaning to the parenthesized
+group.
+
+* Backslash::                       Introduces special sequences
+* Circumflex/dollar sign/period::   Behave specially with regard to new lines
+* Square brackets::                 Are a bit different in strange cases
+* Options setting::                 Toggle modifiers in the middle of a regexp
+* Non-capturing subpatterns::       Are not counted when backreferencing
+* Repetition::                      Allows for non-greedy matching
+* Backreferences::                  Allows for more than 10 back references
+* Assertions::                      Allows for complex look ahead matches
+* Non-backtracking subpatterns::    Often gives more performance
+* Conditional subpatterns::         Allows if/then/else branches
+* Recursive patterns::              For example to match parentheses
+* Comments::                        Because things can get complex...
+@end menu
+
+@node Backslash
+@appendixsec Backslash
+@cindex Perl-style regular expressions, escaped sequences
+
+There are a few difference in the handling of backslashed 
+sequences in Perl mode.
+
+First of all, there are no @code{\o} and @code{\d} sequences.
+@sc{ascii} values for characters can be specified in octal
+with a @code{\@var{xxx}} sequence, where @var{xxx} is a
+sequence of up to three octal digits.  If the first digit
+is a zero, the treatment of the sequence is straightforward;
+just note that if the character that follows the escaped digit
+is itself an octal digit, you have to supply three octal digits
+for @var{xxx}.  For example @code{\07} is a @sc{bel} character
+rather than a @sc{nul} and a literal @code{7} (this sequence is
+instead represented by @code{\0007}).
+
+@cindex Perl-style regular expressions, backreferences
+The handling of a backslash followed by a digit other than 0
+is complicated.  Outside a character class, @command{sed} reads it
+and any following digits as a decimal number. If the number
+is less than 10, or if there have been at least that many
+previous capturing left parentheses in the expression, the
+entire sequence is taken as a back reference. A description
+of how this works is given later, following the discussion
+of parenthesized subpatterns.
+
+Inside a character class, or if the decimal number is
+greater than 9 and there have not been that many capturing
+subpatterns, @command{sed} re-reads up to three octal digits following
+the backslash, and generates a single byte from the
+least significant 8 bits of the value. Any subsequent digits
+stand for themselves.  For example:
+
+@example
+     \040  @i{is another way of writing a space}
+     \40   @i{is the same, provided there are fewer than 40}
+           @i{previous capturing subpatterns}
+     \7    @i{is always a back reference}
+     \011  @i{is always a tab}
+     \11   @i{might be a back reference, or another way of}
+           @i{writing a tab}
+     \0113 @i{is a tab followed by the character @samp{3}}
+     \113  @i{is the character with octal code 113 (since there}
+           @i{can be no more than 99 back references)}
+     \377  @i{is a byte consisting entirely of 1 bits (@sc{ascii} 255)}
+     \81   @i{is either a back reference, or a binary zero}
+           @i{followed by the two characters @samp{81}}
+@end example
+
+Note that octal values of 100 or greater must not be introduced
+duced by a leading zero, because no more than three octal
+digits are ever read.
+
+All the sequences that define a single byte value can be
+used both inside and outside character classes. In addition,
+inside a character class, the sequence @code{\b} is interpreted
+as the backspace character (hex 08). Outside a character
+class it has a different meaning (see below).
+
+In addition, there are four additional escapes specifying
+generic character classes (like @code{\w} and @code{\W} do):
+
+@cindex Perl-style regular expressions, character classes
+@table @samp
+@item \d
+Matches any decimal digit
+
+@item \D
+Matches any character that is not a decimal digit
+@end table
+
+In Perl mode, these character type sequences can appear both inside and
+outside character classes. Instead, in @sc{posix} mode these sequences
+(as well as @code{\w} and @code{\W}) are treated as two literal characters
+(a backslash and a letter) inside square brackets.
+
+Escaped sequences specifying assertions are also different in
+Perl mode.  An assertion specifies a condition that has to be met
+at a particular point in a match, without consuming any
+characters from the subject string. The use of subpatterns
+for more complicated assertions is described below.  The
+backslashed assertions are
+
+@cindex Perl-style regular expressions, assertions
+@table @samp
+@item \b
+Asserts that the point is at a word boundary.
+A word boundary is a position in the subject string where
+the current character and the previous character do not both
+match @code{\w} or @code{\W} (i.e. one matches @code{\w} and
+the other matches @code{\W}), or the start or end of the string
+if the first or last character matches @code{\w}, respectively.
+
+@item \B
+Asserts that the point is not at a word boundary.
+
+@item \A
+Asserts the matcher is at the start of pattern space (independent
+of multiline mode).
+
+@item \Z
+Asserts the matcher is at the end of pattern space,
+or at a newline before the end of pattern space (independent of
+multiline mode)
+
+@item \z
+Asserts the matcher is at the end of pattern space (independent
+of multiline mode)
+@end table
+
+These assertions may not appear in character classes (but
+note that @code{\b} has a different meaning, namely the
+backspace character, inside a character class).
+Note that Perl mode does not support directly assertions
+for the beginning and the end of word; the @acronym{GNU} extensions
+@code{\<} and @code{\>} achieve this purpose in @sc{posix} mode
+instead.
+
+The @code{\A}, @code{\Z}, and @code{\z} assertions differ
+from the traditional circumflex and dollar sign (described below)
+in that they only ever match at the very start and end of the
+subject string, whatever options are set; in particular @code{\A}
+and @code{\z} are the same as the @acronym{GNU} extensions
+@code{\`} and @code{\'} that are active in @sc{posix} mode.
+
+@node Circumflex/dollar sign/period
+@appendixsec Circumflex, dollar sign, period
+@cindex Perl-style regular expressions, newlines
+
+Outside a character class, in the default matching mode, the
+circumflex character is an assertion which is true only if
+the current matching point is at the start of the subject
+string.  Inside a character class, the circumflex has an entirely
+different meaning (see below).
+
+The circumflex need not be the first character of the pattern if
+a number of alternatives are involved, but it should be the
+first thing in each alternative in which it appears if the
+pattern is ever to match that branch. If all possible alternatives,
+start with a circumflex, that is, if the pattern is
+constrained to match only at the start of the subject, it is
+said to be an @dfn{anchored} pattern. (There are also other constructs
+structs that can cause a pattern to be anchored.)
+
+A dollar sign is an assertion which is true only if the
+current matching point is at the end of the subject string,
+or immediately before a newline character that is the last
+character in the string (by default).  A dollar sign need not be the
+last character of the pattern if a number of alternatives
+are involved, but it should be the last item in any branch
+in which it appears.  A dollar sign has no special meaning in a
+character class.
+
+@cindex Perl-style regular expressions, multiline
+The meanings of the circumflex and dollar sign characters are
+changed if the @code{M} modifier option is used. When this is
+the case, they match immediately after and immediately
+before an internal @code{\n} character, respectively, in addition
+to matching at the start and end of the subject string.  For
+example, the pattern @code{/^abc$/} matches the subject string
+@samp{def\nabc} in multiline mode, but not otherwise.  Consequently,
+patterns that are anchored in single line mode
+because all branches start with @code{^} are not anchored in
+multiline mode.
+
+@cindex Perl-style regular expressions, multiline
+Note that the sequences @code{\A}, @code{\Z}, and @code{\z}
+can be used to match the start and end of the subject in both
+modes, and if all branches of a pattern start with @code{\A}
+is it always anchored, whether the @code{M} modifier is set or not.
+
+@cindex Perl-style regular expressions, single line
+Outside a character class, a dot in the pattern matches any
+one character in the subject, including a non-printing character,
+but not (by default) newline.  If the @code{S} modifier is used,
+dots match newlines as well.  Actually, the handling of
+dot is entirely independent of the handling of circumflex
+and dollar sign, the only relationship being that they both
+involve newline characters. Dot has no special meaning in a
+character class.
+
+@node Square brackets
+@appendixsec Square brackets
+@cindex Perl-style regular expressions, character classes
+
+An opening square bracket introduces a character class, terminated
+by a closing square bracket.  A closing square bracket on its own
+is not special.  If a closing square bracket is required as a
+member of the class, it should be the first data character in
+the class (after an initial circumflex, if present) or escaped with a backslash.
+
+A character class matches a single character in the subject;
+the character must be in the set of characters defined by
+the class, unless the first character in the class is a circumflex,
+in which case the subject character must not be in
+the set defined by the class. If a circumflex is actually
+required as a member of the class, ensure it is not the
+first character, or escape it with a backslash.
+
+For example, the character class [aeiou] matches any lower
+case vowel, while [^aeiou] matches any character that is not
+a lower case vowel. Note that a circumflex is just a convenient
+venient notation for specifying the characters which are in
+the class by enumerating those that are not. It is not an
+assertion: it still consumes a character from the subject
+string, and fails if the current pointer is at the end of
+the string.
+
+@cindex Perl-style regular expressions, case-insensitive
+When caseless matching is set, any letters in a class
+represent both their upper case and lower case versions, so
+for example, a caseless @code{[aeiou]} matches uppercase
+and lowercase @samp{A}s, and a caseless @code{[^aeiou]}
+does not match @samp{A}, whereas a case-sensitive version would.
+
+@cindex Perl-style regular expressions, single line
+@cindex Perl-style regular expressions, multiline
+The newline character is never treated in any special way in
+character classes, whatever the setting of the @code{S} and
+@code{M} options (modifiers) is.  A class such as @code{[^a]} will
+always match a newline.
+
+The minus (hyphen) character can be used to specify a range
+of characters in a character class.  For example, @code{[d-m]}
+matches any letter between d and m, inclusive.  If a minus
+character is required in a class, it must be escaped with a
+backslash or appear in a position where it cannot be interpreted
+as indicating a range, typically as the first or last
+character in the class.
+
+It is not possible to have the literal character @code{]} as the
+end character of a range.  A pattern such as @code{[W-]46]} is
+interpreted as a class of two characters (@code{W} and @code{-})
+followed by a literal string @code{46]}, so it would match
+@samp{W46]} or @samp{-46]}. However, if the @code{]} is escaped
+with a backslash it is interpreted as the end of range, so
+@code{[W-\]46]} is interpreted as a single class containing a
+range followed by two separate characters. The octal or
+hexadecimal representation of @code{]} can also be used to end a range.
+
+Ranges operate in @sc{ascii} collating sequence. They can also be
+used for characters specified numerically, for example
+@code{[\000-\037]}. If a range that includes letters is used when
+caseless matching is set, it matches the letters in either
+case. For example, a caseless @code{[W-c]} is equivalent to
+@code{[][\^_`wxyzabc]}, matched caselessly, and if character
+tables for the French locale are in use, @code{[\xc8-\xcb]}
+matches accented E characters in both cases.
+
+Unlike in @sc{posix} mode, the character types @code{\d},
+@code{\D}, @code{\s}, @code{\S}, @code{\w}, and @code{\W}
+may also appear in a character class, and add the characters
+that they match to the class. For example, @code{[\dABCDEF]} matches any
+hexadecimal digit.  A circumflex can conveniently be used
+with the upper case character types to specify a more restricted
+set of characters than the matching lower case type.
+For example, the class @code{[^\W_]} matches any letter or digit,
+but not underscore.
+
+All non-alphameric characters other than @code{\}, @code{-},
+@code{^} (at the start) and the terminating @code{]}
+are non-special in character classes, but it does no harm
+if they are escaped.
+
+Perl 5.6 supports the @sc{posix} notation for character classes, which
+uses names enclosed by @code{[:} and @code{:]} within the enclosing
+square brackets, and @value{SSED} supports this notation as well.
+For example,
+
+@example
+     [01[:alpha:]%]
+@end example
+
+@noindent
+matches @samp{0}, @samp{1}, any alphabetic character, or @samp{%}.
+The supported class names are
+
+@table @code
+@item alnum
+Matches letters and digits
+
+@item alpha
+Matches letters
+
+@item ascii
+Matches character codes 0 - 127
+
+@item cntrl
+Matches control characters
+
+@item digit
+Matches decimal digits (same as \d)
+
+@item graph
+Matches printing characters, excluding space
+
+@item lower
+Matches lower case letters
+
+@item print
+Matches printing characters, including space
+
+@item punct
+Matches printing characters, excluding letters and digits
+
+@item space
+Matches white space (same as \s)
+
+@item upper
+Matches upper case letters
+
+@item word
+Matches ``word'' characters (same as \w)
+
+@item xdigit
+Matches hexadecimal digits
+@end table
+
+The names @code{ascii} and @code{word} are extensions valid only in
+Perl mode.  Another Perl extension is negation, which is
+indicated by a circumflex character after the colon. For example,
+
+@example
+     [12[:^digit:]]
+@end example
+
+@noindent
+matches @samp{1}, @samp{2}, or any non-digit.
+
+@node Options setting
+@appendixsec Options setting
+@cindex Perl-style regular expressions, toggling options
+@cindex Perl-style regular expressions, case-insensitive
+@cindex Perl-style regular expressions, multiline
+@cindex Perl-style regular expressions, single line
+@cindex Perl-style regular expressions, extended
+
+The settings of the @code{I}, @code{M}, @code{S}, @code{X}
+modifiers can be changed from within the pattern by
+a sequence of Perl option letters enclosed between @code{(?}
+and @code{)}. The option letters must be lowercase.
+
+For example, @code{(?im)} sets caseless, multiline matching. It is
+also possible to unset these options by preceding the letter
+with a hyphen; you can also have combined settings and unsettings:
+@code{(?im-sx)} sets caseless and multiline matching,
+while unsets single line matching (for dots) and extended
+whitespace interpretation.  If a letter appears both before
+and after the hyphen, the option is unset.
+
+The scope of these option changes depends on where in the
+pattern the setting occurs. For settings that are outside
+any subpattern (defined below), the effect is the same as if
+the options were set or unset at the start of matching. The
+following patterns all behave in exactly the same way:
+
+@example
+     (?i)abc
+     a(?i)bc
+     ab(?i)c
+     abc(?i)
+@end example
+
+which in turn is the same as specifying the pattern abc with
+the @code{I} modifier.  In other words, ``top level'' settings
+apply to the whole pattern (unless there are other
+changes inside subpatterns). If there is more than one setting
+of the same option at top level, the rightmost setting
+is used.
+
+If an option change occurs inside a subpattern, the effect
+is different.  This is a change of behaviour in Perl 5.005.
+An option change inside a subpattern affects only that part
+of the subpattern @emph{that follows} it, so
+
+@example
+     (a(?i)b)c
+@end example
+
+@noindent
+matches abc and aBc and no other  strings  (assuming
+case-sensitive matching is used).  By this means, options can
+be made to have different settings in different parts of the
+pattern.  Any changes made in one alternative do carry on
+into subsequent branches within the same subpattern.  For
+example,
+
+@example
+     (a(?i)b|c)
+@end example
+
+@noindent
+matches @samp{ab}, @samp{aB}, @samp{c}, and @samp{C},
+even though when matching @samp{C} the first branch is
+abandoned before the option setting.
+This is because the effects of option settings happen at
+compile time. There would be some very weird behaviour otherwise.
+
+@ignore
+There are two PCRE-specific options PCRE_UNGREEDY and PCRE_EXTRA
+that can be changed in the same way as the Perl-compatible options by
+using the characters U and X respectively.  The (?X) flag
+setting is special in that it must always occur earlier in
+the pattern than any of the additional features it turns on,
+even when it is at top level. It is best put at the start.
+@end ignore
+
+
+@node Non-capturing subpatterns
+@appendixsec Non-capturing subpatterns
+@cindex Perl-style regular expressions, non-capturing subpatterns
+
+Marking part of a pattern as a subpattern does two things.
+On one hand, it localizes a set of alternatives; on the other
+hand, it sets up the subpattern as a capturing subpattern (as
+defined above).  The subpattern can be backreferenced and
+referenced in the right side of @code{s} commands.
+
+For example, if the string @samp{the red king} is matched against
+the pattern
+
+@example
+     the ((red|white) (king|queen))
+@end example
+
+@noindent
+the captured substrings are @samp{red king}, @samp{red},
+and @samp{king}, and are numbered 1, 2, and 3.
+
+The fact that plain parentheses fulfil two functions is not
+always helpful.  There are often times when a grouping
+subpattern is required without a capturing requirement.  If an
+opening parenthesis is followed by @code{?:}, the subpattern does
+not do any capturing, and is not counted when computing the
+number of any subsequent capturing subpatterns. For example,
+if the string @samp{the white queen} is matched against the pattern
+
+@example
+     the ((?:red|white) (king|queen))
+@end example
+
+@noindent
+the captured substrings are @samp{white queen} and @samp{queen},
+and are numbered 1 and 2. The maximum number of captured
+substrings is 99, while the maximum number of all subpatterns,
+both capturing and non-capturing, is 200.
+
+As a convenient shorthand, if any option settings are
+equired at the start of a non-capturing subpattern, the
+option letters may appear between the @code{?} and the
+@code{:}.  Thus the two patterns
+
+@example
+   (?i:saturday|sunday)
+   (?:(?i)saturday|sunday)
+@end example
+
+@noindent
+match exactly the same set of strings.  Because alternative
+branches are tried from left to right, and options are not
+reset until the end of the subpattern is reached, an option
+setting in one branch does affect subsequent branches, so
+the above patterns match @samp{SUNDAY} as well as @samp{Saturday}.
+
+
+@node Repetition
+@appendixsec Repetition
+@cindex Perl-style regular expressions, repetitions
+
+Repetition is specified by quantifiers, which can follow any
+of the following items:
+
+@itemize @bullet
+@item
+a single character, possibly escaped
+
+@item
+the @code{.} special character
+
+@item
+a character class
+
+@item
+a back reference (see next section)
+
+@item
+a parenthesized subpattern (unless it is an assertion; @pxref{Assertions})
+@end itemize
+
+The general repetition quantifier specifies a minimum and
+maximum number of permitted matches, by giving the two
+numbers in curly brackets (braces), separated by a comma.
+The numbers must be less than 65536, and the first must be
+less than or equal to the second. For example:
+
+@example
+     z@{2,4@}
+@end example
+
+@noindent
+matches @samp{zz}, @samp{zzz}, or @samp{zzzz}. A closing brace on its own
+is not a special character. If the second number is omitted,
+but the comma is present, there is no upper limit; if the
+second number and the comma are both omitted, the quantifier
+specifies an exact number of required matches. Thus
+
+@example
+     [aeiou]@{3,@}
+@end example
+
+@noindent
+matches at least 3 successive vowels, but may match many
+more, while
+
+@example
+     \d@{8@}
+@end example
+
+@noindent
+matches exactly 8 digits.  An opening curly bracket that
+appears in a position where a quantifier is not allowed, or
+one that does not match the syntax of a quantifier, is taken
+as a literal character. For example, @{,6@} is not a quantifier,
+but a literal string of four characters.@footnote{It
+raises an error if @option{-R} is not used.}
+
+The quantifier @samp{@{0@}} is permitted, causing the expression to
+behave as if the previous item and the quantifier were not
+present.
+
+For convenience (and historical compatibility) the three
+most common quantifiers have single-character abbreviations:
+
+@table @code
+@item *
+is equivalent to @{0,@}
+
+@item +
+is equivalent to @{1,@}
+
+@item ?
+is equivalent to @{0,1@}
+@end table
+
+It is possible to construct infinite loops by following a
+subpattern that can match no characters with a quantifier
+that has no upper limit, for example:
+
+@example
+     (a?)*
+@end example
+
+Earlier versions of Perl used to give an error at
+compile time for such patterns. However, because there are
+cases where this can be useful, such patterns are now
+accepted, but if any repetition of the subpattern does in
+fact match no characters, the loop is forcibly broken.
+
+@cindex Greedy regular expression matching
+@cindex Perl-style regular expressions, stingy repetitions
+By default, the quantifiers are @dfn{greedy} like in @sc{posix}
+mode, that is, they match as much as possible (up to the maximum
+number of permitted times), without causing the rest of the
+pattern to fail. The classic example of where this gives problems
+is in trying to match comments in C programs. These appear between
+the sequences @code{/*} and @code{*/} and within the sequence, individual
+@code{*} and @code{/} characters may appear. An attempt to match C
+comments by applying the pattern
+
+@example
+     /\*.*\*/
+@end example
+
+@noindent
+to the string
+
+@example
+     /* first command */ not comment /* second comment */
+@end example
+
+@noindent
+
+fails, because it matches the entire string owing to the
+greediness of the @code{.*} item.
+
+However, if a quantifier is followed by a question mark, it
+ceases to be greedy, and instead matches the minimum number
+of times possible, so the pattern @code{/\*.*?\*/}
+does the right thing with the C comments. The meaning of the
+various quantifiers is not otherwise changed, just the preferred
+number of matches.  Do not confuse this use of question
+mark with its use as a quantifier in its own right.
+Because it has two uses, it can sometimes appear doubled, as in
+
+@example
+     \d??\d
+@end example
+
+which matches one digit by preference, but can match two if
+that is the only way the rest of the pattern matches.
+
+Note that greediness does not matter when specifying addresses,
+but can be nevertheless used to improve performance.
+
+@ignore
+   If the PCRE_UNGREEDY option is set (an option which is not
+   available in Perl), the quantifiers are not greedy by
+   default, but individual ones can be made greedy by following
+   them with a question mark. In other words, it inverts the
+   default behaviour.
+@end ignore
+
+When a parenthesized subpattern is quantified with a minimum
+repeat count that is greater than 1 or with a limited maximum,
+more store is required for the compiled pattern, in
+proportion to the size of the minimum or maximum.
+
+@cindex Perl-style regular expressions, single line
+If a pattern starts with @code{.*} or @code{.@{0,@}} and the
+@code{S} modifier is used, the pattern is implicitly anchored,
+because whatever follows will be tried against every character
+position in the subject string, so there is no point in
+retrying the overall match at any position after the first.
+PCRE treats such a pattern as though it were preceded by \A.
+
+When a capturing subpattern is repeated, the value captured
+is the substring that matched the final iteration. For example,
+after
+
+@example
+     (tweedle[dume]@{3@}\s*)+
+@end example
+
+@noindent
+has matched @samp{tweedledum tweedledee} the value of the
+captured substring is @samp{tweedledee}.  However, if there are
+nested capturing subpatterns, the corresponding captured
+values may have been set in previous iterations. For example,
+after
+
+@example
+     /(a|(b))+/
+@end example
+
+matches @samp{aba}, the value of the second captured substring is
+@samp{b}.
+
+@node Backreferences
+@appendixsec Backreferences
+@cindex Perl-style regular expressions, backreferences
+
+Outside a character class, a backslash followed by a digit
+greater than 0 (and possibly further digits) is a back
+reference to a capturing subpattern earlier (i.e.  to its
+left) in the pattern, provided there have been that many
+previous capturing left parentheses.
+
+However, if the decimal number following the backslash is
+less than 10, it is always taken as a back reference, and
+causes an error only if there are not that many capturing
+left parentheses in the entire pattern. In other words, the
+parentheses that are referenced need not be to the left of
+the reference for numbers less than 10. @ref{Backslash}
+for further details of the handling of digits following a backslash.
+
+A back reference matches whatever actually matched the capturing
+subpattern in the current subject string, rather than
+anything matching the subpattern itself. So the pattern
+
+@example
+     (sens|respons)e and \1ibility
+@end example
+
+@noindent
+matches @samp{sense and sensibility} and @samp{response and responsibility},
+but not @samp{sense and responsibility}. If caseful
+matching is in force at the time of the back reference, the
+case of letters is relevant. For example,
+
+@example
+     ((?i)blah)\s+\1
+@end example
+
+@noindent
+matches @samp{blah blah} and @samp{Blah Blah}, but not
+@samp{BLAH blah}, even though the original capturing
+subpattern is matched caselessly.
+
+There may be more than one back reference to the same subpattern.
+Also, if a subpattern has not actually been used in a
+particular match, any back references to it always fail. For
+example, the pattern
+
+@example
+     (a|(bc))\2
+@end example
+
+@noindent
+always fails if it starts to match @samp{a} rather than
+@samp{bc}.  Because there may be up to 99 back references, all
+digits following the backslash are taken as part of a potential
+back reference number; this is different from what happens
+in @sc{posix} mode. If the pattern continues with a digit
+character, some delimiter must be used to terminate the back
+reference.  If the @code{X} modifier option is set, this can be
+whitespace.  Otherwise an empty comment can be used, or the
+following character can be expressed in hexadecimal or octal.
+
+A back reference that occurs inside the parentheses to which
+it refers fails when the subpattern is first used, so, for
+example, @code{(a\1)} never matches.  However, such references
+can be useful inside repeated subpatterns. For example, the
+pattern
+
+@example
+     (a|b\1)+
+@end example
+
+@noindent
+matches any number of @samp{a}s and also @samp{aba}, @samp{ababbaa},
+etc. At each iteration of the subpattern, the back reference matches
+the character string corresponding to the previous iteration.  In
+order for this to work, the pattern must be such that the first
+iteration does not need to match the back reference.  This can be
+done using alternation, as in the example above, or by a
+quantifier with a minimum of zero.
+
+@node Assertions
+@appendixsec Assertions
+@cindex Perl-style regular expressions, assertions
+@cindex Perl-style regular expressions, asserting subpatterns
+
+An assertion is a test on the characters following or
+preceding the current matching point that does not actually
+consume any characters. The simple assertions coded as @code{\b},
+@code{\B}, @code{\A}, @code{\Z}, @code{\z}, @code{^} and @code{$}
+are described above. More complicated assertions are coded as
+subpatterns.  There are two kinds: those that look ahead of the
+current position in the subject string, and those that look behind it.
+
+@cindex Perl-style regular expressions, lookahead subpatterns
+An assertion subpattern is matched in the normal way, except
+that it does not cause the current matching position to be
+changed. Lookahead assertions start with @code{(?=} for positive
+assertions and @code{(?!} for negative assertions. For example,
+
+@example
+     \w+(?=;)
+@end example
+
+@noindent
+matches a word followed by a semicolon, but does not include
+the semicolon in the match, and
+
+@example
+     foo(?!bar)
+@end example
+
+@noindent
+matches any occurrence of @samp{foo} that is not followed by
+@samp{bar}.
+
+Note that the apparently similar pattern
+
+@example
+     (?!foo)bar
+@end example
+
+@noindent
+@cindex Perl-style regular expressions, lookbehind subpatterns
+finds any occurrence of @samp{bar} even if it is preceded by
+@samp{foo}, because the assertion @code{(?!foo)} is always true
+when the next three characters are @samp{bar}. A lookbehind
+assertion is needed to achieve this effect.
+Lookbehind assertions start with @code{(?<=} for positive
+assertions and @code{(?<!} for negative assertions. So,
+
+@example
+     (?<!foo)bar
+@end example
+
+achieves the required effect of finding an occurrence of
+@samp{bar} that is not preceded by @samp{foo}. The contents of a
+lookbehind assertion are restricted
+such that all the strings it matches must have a fixed
+length.  However, if there are several alternatives, they do
+not all have to have the same fixed length.  This is an extension
+compared with Perl 5.005, which requires all branches to match
+the same length of string. Thus
+
+@example
+     (?<=dogs|cats|)
+@end example
+
+@noindent
+is permitted, but the apparently equivalent regular expression
+
+@example
+     (?<!dogs?|cats?)
+@end example
+
+@noindent
+causes an error at compile time. Branches that match different
+length strings are permitted only at the top level of
+a lookbehind assertion: an assertion such as
+
+@example
+     (?<=ab(c|de))
+@end example
+
+@noindent
+is not permitted, because its single top-level branch can
+match two different lengths, but it is acceptable if rewritten
+to use two top-level branches:
+
+@example
+     (?<=abc|abde)
+@end example
+
+All this is required because lookbehind assertions simply
+move the current position back by the alternative's fixed
+width and then try to match.  If there are
+insufficient characters before the current position, the
+match is deemed to fail.  Lookbehinds, in conjunction with
+non-backtracking subpatterns can be particularly useful for
+matching at the ends of strings; an example is given at the end
+of the section on non-backtracking subpatterns.
+
+Several assertions (of any sort) may occur in succession.
+For example,
+
+@example
+     (?<=\d@{3@})(?<!999)foo
+@end example
+
+@noindent
+matches @samp{foo} preceded by three digits that are not @samp{999}.
+Notice that each of the assertions is applied independently
+at the same point in the subject string. First there is a
+check that the previous three characters are all digits, and
+then there is a check that the same three characters are not
+@samp{999}.  This pattern does not match @samp{foo} preceded by six
+characters, the first of which are digits and the last three
+of which are not @samp{999}.  For example, it doesn't match
+@samp{123abcfoo}. A pattern to do that is
+
+@example
+     (?<=\d@{3@}...)(?<!999)foo
+@end example
+
+@noindent
+This time the first assertion looks at the preceding six
+characters, checking that the first three are digits, and
+then the second assertion checks that the preceding three
+characters are not @samp{999}.  Actually, assertions can be
+nested in any combination, so one can write this as 
+
+@example
+     (?<=\d@{3@}(?!999)...)foo
+@end example
+
+or
+
+@example
+     (?<=\d@{3@}...(?<!999))foo
+@end example
+
+@noindent
+both of which might be considered more readable.
+
+Assertion subpatterns are not capturing subpatterns, and may
+not be repeated, because it makes no sense to assert the
+same thing several times. If any kind of assertion contains
+capturing subpatterns within it, these are counted for the
+purposes of numbering the capturing subpatterns in the whole
+pattern.  However, substring capturing is carried out only
+for positive assertions, because it does not make sense for
+negative assertions.
+
+Assertions count towards the maximum of 200 parenthesized
+subpatterns.
+
+@node Non-backtracking subpatterns
+@appendixsec Non-backtracking subpatterns
+@cindex Perl-style regular expressions, non-backtracking subpatterns
+
+With both maximizing and minimizing repetition, failure of
+what follows normally causes the repeated item to be evaluated
+again to see if a different number of repeats allows the
+rest of the pattern to match. Sometimes it is useful to
+prevent this, either to change the nature of the match, or
+to cause it fail earlier than it otherwise might, when the
+author of the pattern knows there is no point in carrying
+on.
+
+Consider, for example, the pattern @code{\d+foo} when applied to
+the subject line
+
+@example
+     123456bar
+@end example
+
+After matching all 6 digits and then failing to match @samp{foo},
+the normal action of the matcher is to try again with only 5
+digits matching the @code{\d+} item, and then with 4, and so on,
+before ultimately failing. Non-backtracking subpatterns
+provide the means for specifying that once a portion of the
+pattern has matched, it is not to be re-evaluated in this way,
+so the matcher would give up immediately on failing to match
+@samp{foo} the first time.  The notation is another kind of special
+parenthesis, starting with @code{(?>} as in this example:
+
+@example
+     (?>\d+)bar
+@end example
+
+This kind of parenthesis ``locks up'' the part of the pattern
+it contains once it has matched, and a failure further into
+the pattern is prevented from backtracking into it.
+Backtracking past it to previous items, however, works as
+normal.
+
+Non-backtracking subpatterns are not capturing subpatterns.  Simple
+cases such as the above example can be thought of as a maximizing
+repeat that must swallow everything it can.  So,
+while both @code{\d+} and @code{\d+?} are prepared to adjust the number of
+digits they match in order to make the rest of the pattern
+match, @code{(?>\d+)} can only match an entire sequence of digits.
+
+This construction can of course contain arbitrarily complicated
+subpatterns, and it can be nested.
+
+@cindex Perl-style regular expressions, lookbehind subpatterns
+Non-backtracking subpatterns can be used in conjunction with look-behind
+assertions to specify efficient matching at the end
+of the subject string. Consider a simple pattern such as
+
+@example
+     abcd$
+@end example
+
+@noindent
+when applied to a long string which does not match.  Because
+matching proceeds from left to right, @command{sed} will look for
+each @samp{a} in the subject and then see if what follows matches
+the rest of the pattern. If the pattern is specified as
+
+@example
+     ^.*abcd$
+@end example
+
+@noindent
+the initial @code{.*} matches the entire string at first, but when
+this fails (because there is no following @samp{a}), it backtracks
+to match all but the last character, then all but the
+last two characters, and so on. Once again the search for
+@samp{a} covers the entire string, from right to left, so we are
+no better off. However, if the pattern is written as
+
+@example
+     ^(?>.*)(?<=abcd)
+@end example
+
+there can be no backtracking for the .* item; it can match
+only the entire string. The subsequent lookbehind assertion
+does a single test on the last four characters. If it fails,
+the match fails immediately. For long strings, this approach
+makes a significant difference to the processing time.
+
+When a pattern contains an unlimited repeat inside a subpattern
+that can itself be repeated an unlimited number of
+times, the use of a once-only subpattern is the only way to
+avoid some failing matches taking a very long time
+indeed.@footnote{Actually, the matcher embedded in @value{SSED}
+    tries to do something for this in the simplest cases,
+    like @code{([^b]*b)*}.  These cases are actually quite
+    common: they happen for example in a regular expression
+    like @code{\/\*([^*]*\*)*\/} which matches C comments.}
+
+The pattern
+
+@example
+     (\D+|<\d+>)*[!?]
+@end example
+
+([^0-9<]+<(\d+>)?)*[!?]
+
+@noindent
+matches an unlimited number of substrings that either consist
+of non-digits, or digits enclosed in angular brackets, followed by
+an exclamation or question mark. When it matches, it runs quickly.
+However, if it is applied to
+
+@example
+     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+@end example
+
+@noindent
+it takes a long time before reporting failure.  This is
+because the string can be divided between the two repeats in
+a large number of ways, and all have to be tried.@footnote{The
+example used @code{[!?]} rather than a single character at the end,
+because both @value{SSED} and Perl have an optimization that allows
+for fast failure when a single character is used. They
+remember the last single character that is required for a
+match, and fail early if it is not present in the string.}
+
+If the pattern is changed to
+
+@example
+     ((?>\D+)|<\d+>)*[!?]
+@end example
+
+sequences of non-digits cannot be broken, and failure happens
+quickly.
+
+@node Conditional subpatterns
+@appendixsec Conditional subpatterns
+@cindex Perl-style regular expressions, conditional subpatterns
+
+It is possible to cause the matching process to obey a subpattern
+conditionally or to choose between two alternative
+subpatterns, depending on the result of an assertion, or
+whether a previous capturing subpattern matched or not. The
+two possible forms of conditional subpattern are
+
+@example
+     (?(@var{condition})@var{yes-pattern})
+     (?(@var{condition})@var{yes-pattern}|@var{no-pattern})
+@end example
+
+If the condition is satisfied, the yes-pattern is used; otherwise
+the no-pattern (if present) is used. If there are more than two
+alternatives in the subpattern, a compile-time error occurs.
+
+There are two kinds of condition. If the text between the
+parentheses consists of a sequence of digits, the condition
+is satisfied if the capturing subpattern of that number has
+previously matched.  The number must be greater than zero.
+Consider the following pattern, which contains non-significant
+white space to make it more readable (assume the @code{X} modifier)
+and to divide it into three parts for ease of discussion:
+
+@example
+     ( \( )?   [^()]+   (?(1) \) )
+@end example
+
+The first part matches an optional opening parenthesis, and
+if that character is present, sets it as the first captured
+substring. The second part matches one or more characters
+that are not parentheses. The third part is a conditional
+subpattern that tests whether the first set of parentheses
+matched or not.  If they did, that is, if subject started
+with an opening parenthesis, the condition is true, and so
+the yes-pattern is executed and a closing parenthesis is
+required. Otherwise, since no-pattern is not present, the
+subpattern matches nothing.  In other words, this pattern
+matches a sequence of non-parentheses, optionally enclosed
+in parentheses.
+
+@cindex Perl-style regular expressions, lookahead subpatterns
+If the condition is not a sequence of digits, it must be an
+assertion.  This may be a positive or negative lookahead or
+lookbehind assertion. Consider this pattern, again containing
+non-significant white space, and with the two alternatives
+on the second line:
+
+@example
+     (?(?=...[a-z])
+        \d\d-[a-z]@{3@}-\d\d |
+        \d\d-\d\d-\d\d )
+@end example
+
+The condition is a positive lookahead assertion that matches
+a letter that is three characters away from the current point.
+If a letter is found, the subject is matched against the first
+alternative @samp{@var{dd}-@var{aaa}-@var{dd}} (where @var{aaa} are
+letters and @var{dd} are digits); otherwise it is matched against 
+the second alternative, @samp{@var{dd}-@var{dd}-@var{dd}}.
+
+
+@node Recursive patterns
+@appendixsec Recursive patterns
+@cindex Perl-style regular expressions, recursive patterns
+@cindex Perl-style regular expressions, recursion
+
+Consider the problem of matching a string in parentheses,
+allowing for unlimited nested parentheses. Without the use
+of recursion, the best that can be done is to use a pattern
+that matches up to some fixed depth of nesting. It is not
+possible to handle an arbitrary nesting depth. Perl 5.6 has
+provided an experimental facility that allows regular
+expressions to recurse (amongst other things). It does this
+by interpolating Perl code in the expression at run time,
+and the code can refer to the expression itself. A Perl pattern
+tern to solve the parentheses problem can be created like
+this:
+
+@example
+     $re = qr@{\( (?: (?>[^()]+) | (?p@{$re@}) )* \)@}x;
+@end example
+
+The @code{(?p@{...@})} item interpolates Perl code at run time,
+and in this case refers recursively to the pattern in which it
+appears. Obviously, @command{sed} cannot support the interpolation of
+Perl code.  Instead, the special item @code{(?R)} is provided for
+the specific case of recursion. This pattern solves the
+parentheses problem (assume the @code{X} modifier option is used
+so that white space is ignored):
+
+@example
+     \( ( (?>[^()]+) | (?R) )* \)
+@end example
+
+First it matches an opening parenthesis. Then it matches any
+number of substrings which can either be a sequence of
+non-parentheses, or a recursive match of the pattern itself
+(i.e. a correctly parenthesized substring). Finally there is
+a closing parenthesis.
+
+This particular example pattern contains nested unlimited
+repeats, and so the use of a non-backtracking subpattern for
+matching strings of non-parentheses is important when applying
+the pattern to strings that do not match. For example, when
+it is applied to
+
+@example
+     (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()
+@end example
+
+it yields a ``no match'' response quickly. However, if a
+standard backtracking subpattern is not used, the match runs
+for a very long time indeed because there are so many different
+ways the @code{+} and @code{*} repeats can carve up the subject,
+and all have to be tested before failure can be reported.
+
+The values set for any capturing subpatterns are those from
+the outermost level of the recursion at which the subpattern
+value is set. If the pattern above is matched against
+
+@example
+     (ab(cd)ef)
+@end example
+
+@noindent
+the value for the capturing parentheses is @samp{ef}, which is
+the last value taken on at the top level.
+
+@node Comments
+@appendixsec Comments
+@cindex Perl-style regular expressions, comments
+
+The sequence (?# marks the start of a comment which continues
+ues up to the next closing parenthesis. Nested parentheses
+are not permitted. The characters that make up a comment
+play no part in the pattern matching at all.
+
+@cindex Perl-style regular expressions, extended
+If the @code{X} modifier option is used, an unescaped @code{#} character
+outside a character class introduces a comment that continues
+up to the next newline character in the pattern.
+@end ifset
+
+
+@page
+@node Concept Index
+@unnumbered Concept Index
+
+This is a general index of all issues discussed in this manual, with the
+exception of the @command{sed} commands and command-line options.
+
+@printindex cp
+
+@page
+@node Command and Option Index
+@unnumbered Command and Option Index
+
+This is an alphabetical list of all @command{sed} commands and command-line
+options.
+
+@printindex fn
+
+@contents
+@bye
+
+@c XXX FIXME: the term "cycle" is never defined...
diff --git a/src/sed/doc/sed.x b/src/sed/doc/sed.x
new file mode 100644
index 0000000..10fe1ee
--- /dev/null
+++ b/src/sed/doc/sed.x
@@ -0,0 +1,313 @@
+.SH NAME
+sed \- a Stream EDitor
+.SH SYNOPSIS
+.nf
+sed [-V] [--version] [--help] [-n] [--quiet] [--silent]
+    [-l N] [--line-length=N] [-u] [--unbuffered]
+    [-r] [--regexp-extended] 
+    [-e script] [--expression=script]
+    [-f script-file] [--file=script-file]
+    [script-if-no-other-script]
+    [file...]
+.fi
+[DESCRIPTION]
+.ds sd \fIsed\fP
+.ds Sd \fISed\fP
+\*(Sd is a stream editor.
+A stream editor is used to perform basic text
+transformations on an input stream
+(a file or input from a pipeline).
+While in some ways similar to an editor which
+permits scripted edits (such as \fIed\fP),
+\*(sd works by making only one pass over the
+input(s), and is consequently more efficient.
+But it is \*(sd's ability to filter text in a pipeline
+which particularly distinguishes it from other types of
+editors.
+
+[COMMAND SYNOPSIS]
+This is just a brief synopsis of \*(sd commands to serve as
+a reminder to those who already know \*(sd;
+other documentation (such as the texinfo document)
+must be consulted for fuller descriptions.
+.SS
+Zero-address ``commands''
+.TP
+.RI :\  label
+Label for
+.B b
+and
+.B t
+commands.
+.TP
+.RI # comment
+The comment extends until the next newline (or the end of a
+.B -e
+script fragment).
+.TP
+}
+The closing bracket of a { } block.
+.SS
+Zero- or One- address commands
+.TP
+=
+Print the current line number.
+.TP
+a \e
+.TP
+.I text
+Append
+.IR text ,
+which has each embedded newline preceded by a backslash.
+.TP
+i \e
+.TP
+.I text
+Insert
+.IR text ,
+which has each embedded newline preceded by a backslash.
+.TP
+q
+Immediately quit the \*(sd script without processing
+any more input,
+except that if auto-print is not disabled
+the current pattern space will be printed.
+.TP
+Q
+Immediately quit the \*(sd script without processing
+any more input.
+.TP
+.RI r\  filename
+Append text read from
+.IR filename .
+.TP
+.RI R\  filename
+Append a line read from
+.IR filename .
+.SS
+Commands which accept address ranges
+.TP
+{
+Begin a block of commands (end with a }).
+.TP
+.RI b\  label
+Branch to
+.IR label ;
+if
+.I label
+is omitted, branch to end of script.
+.TP
+.RI t\  label
+If a s/// has done a successful substitution since the
+last input line was read and since the last t or T
+command, then branch to
+.IR label ;
+if
+.I label
+is omitted, branch to end of script.
+.TP
+.RI T\  label
+If no s/// has done a successful substitution since the
+last input line was read and since the last t or T
+command, then branch to
+.IR label ;
+if
+.I label
+is omitted, branch to end of script.
+.TP
+c \e
+.TP
+.I text
+Replace the selected lines with
+.IR text ,
+which has each embedded newline preceded by a backslash.
+.TP
+d
+Delete pattern space.
+Start next cycle.
+.TP
+D
+Delete up to the first embedded newline in the pattern space.
+Start next cycle, but skip reading from the input
+if there is still data in the pattern space.
+.TP
+h H
+Copy/append pattern space to hold space.
+.TP
+g G
+Copy/append hold space to pattern space.
+.TP
+x
+Exchange the contents of the hold and pattern spaces.
+.TP
+l
+List out the current line in a ``visually unambiguous'' form.
+.TP
+n N
+Read/append the next line of input into the pattern space.
+.TP
+p
+Print the current pattern space.
+.TP
+P
+Print up to the first embedded newline of the current pattern space.
+.TP
+.RI s/ regexp / replacement /
+Attempt to match
+.I regexp
+against the pattern space.
+If successful, replace that portion matched
+with
+.IR replacement .
+The
+.I replacement
+may contain the special character
+.B &
+to refer to that portion of the pattern space which matched,
+and the special escapes \e1 through \e9 to refer to the
+corresponding matching sub-expressions in the
+.IR regexp .
+.TP
+.RI w\  filename
+Write the current pattern space to
+.IR filename .
+.TP
+.RI W\  filename
+Write the first line of the current pattern space to
+.IR filename .
+.TP
+.RI y/ source / dest /
+Transliterate the characters in the pattern space which appear in
+.I source
+to the corresponding character in
+.IR dest .
+.SH
+Addresses
+\*(Sd commands can be given with no addresses, in which
+case the command will be executed for all input lines;
+with one address, in which case the command will only be executed
+for input lines which match that address; or with two
+addresses, in which case the command will be executed
+for all input lines which match the inclusive range of
+lines starting from the first address and continuing to
+the second address.
+Three things to note about address ranges:
+the syntax is
+.IR addr1 , addr2
+(i.e., the addresses are separated by a comma);
+the line which
+.I addr1
+matched will always be accepted,
+even if
+.I addr2
+selects an earlier line;
+and if
+.I addr2
+is a
+.IR regexp ,
+it will not be tested against the line that
+.I addr1
+matched.
+.PP
+After the address (or address-range),
+and before the command, a
+.B !
+may be inserted,
+which specifies that the command shall only be
+executed if the address (or address-range) does
+.B not
+match.
+.PP
+The following address types are supported:
+.TP
+.I number
+Match only the specified line
+.IR number .
+.TP
+.IR first ~ step
+Match every
+.IR step 'th
+line starting with line
+.IR first .
+For example, ``sed -n 1~2p'' will print all the odd-numbered lines in
+the input stream, and the address 2~5 will match every fifth line,
+starting with the second. (This is an extension.)
+.TP
+$
+Match the last line.
+.TP
+.RI / regexp /
+Match lines matching the regular expression
+.IR regexp .
+.TP
+.BI \fR\e\fPc regexp c
+Match lines matching the regular expression
+.IR regexp .
+The
+.B c
+may be any character.
+.PP
+GNU \*(sd also supports some special 2-address forms:
+.TP
+.RI 0, addr2
+Start out in "matched first address" state, until
+.I addr2
+is found.
+This is similar to
+.RI 1, addr2 ,
+except that if
+.I addr2
+matches the very first line of input the
+.RI 0, addr2
+form will be at the end of its range, whereas the
+.RI 1, addr2
+form will still be at the beginning of its range.
+.TP
+.IR addr1 ,+ N
+Will match
+.I addr1
+and the
+.I N
+lines following
+.IR addr1 .
+.TP
+.IR addr1 ,~ N
+Will match
+.I addr1
+and the lines following
+.I addr1
+until the next line whose input line number is a multiple of
+.IR N .
+
+[REGULAR EXPRESSIONS]
+POSIX.2 BREs
+.I should
+be supported, but they aren't completely because of performance
+problems.
+The
+.B \en
+sequence in a regular expression matches the newline character,
+and similarly for
+.BR \ea ,
+.BR \et ,
+and other sequences.
+
+[SEE ALSO]
+.BR awk (1),
+.BR ed (1),
+.BR grep (1),
+.BR tr (1),
+.BR perlre (1),
+sed.info,
+any of various books on \*(sd,
+.na
+the \*(sd FAQ (http://sed.sf.net/grabbag/tutorials/sedfaq.txt),
+http://sed.sf.net/grabbag/.
+
+[BUGS]
+.PP
+E-mail bug reports to
+.BR bonzini@gnu.org .
+Be sure to include the word ``sed'' somewhere in the ``Subject:'' field.
+Also, please include the output of ``sed --version'' in the body
+of your report if at all possible.
diff --git a/src/sed/doc/stamp-vti b/src/sed/doc/stamp-vti
new file mode 100644
index 0000000..16cb2b4
--- /dev/null
+++ b/src/sed/doc/stamp-vti
@@ -0,0 +1,4 @@
+@set UPDATED 30 January 2006
+@set UPDATED-MONTH January 2006
+@set EDITION 4.1.5
+@set VERSION 4.1.5
diff --git a/src/sed/doc/version.texi b/src/sed/doc/version.texi
new file mode 100644
index 0000000..16cb2b4
--- /dev/null
+++ b/src/sed/doc/version.texi
@@ -0,0 +1,4 @@
+@set UPDATED 30 January 2006
+@set UPDATED-MONTH January 2006
+@set EDITION 4.1.5
+@set VERSION 4.1.5
diff --git a/src/sed/intl/ChangeLog b/src/sed/intl/ChangeLog
new file mode 100644
index 0000000..586cc92
--- /dev/null
+++ b/src/sed/intl/ChangeLog
@@ -0,0 +1,4 @@
+2002-01-31  GNU  <bug-gnu-gettext@gnu.org>
+
+	* Version 0.11 released.
+
diff --git a/src/sed/intl/Makefile.in b/src/sed/intl/Makefile.in
new file mode 100644
index 0000000..1a1f8f4
--- /dev/null
+++ b/src/sed/intl/Makefile.in
@@ -0,0 +1,337 @@
+# Makefile for directory with message catalog handling in GNU NLS Utilities.
+# Copyright (C) 1995-1998, 2000-2002 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Library General Public License as published
+# by the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Library General Public License for more details.
+#
+# You should have received a copy of the GNU Library General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+# USA.
+
+PACKAGE = @PACKAGE@
+VERSION = @VERSION@
+
+SHELL = /bin/sh
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+top_builddir = ..
+VPATH = @srcdir@
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+transform = @program_transform_name@
+libdir = @libdir@
+includedir = @includedir@
+datadir = @datadir@
+localedir = $(datadir)/locale
+gettextsrcdir = $(datadir)/gettext/intl
+aliaspath = $(localedir)
+subdir = intl
+
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+MKINSTALLDIRS = @MKINSTALLDIRS@
+mkinstalldirs = $(SHELL) `case "$(MKINSTALLDIRS)" in /*) echo "$(MKINSTALLDIRS)" ;; *) echo "$(top_builddir)/$(MKINSTALLDIRS)" ;; esac`
+
+l = @INTL_LIBTOOL_SUFFIX_PREFIX@
+
+AR = ar
+CC = @CC@
+LIBTOOL = @LIBTOOL@
+RANLIB = @RANLIB@
+YACC = @INTLBISON@ -y -d
+YFLAGS = --name-prefix=__gettext
+
+DEFS = -DLOCALEDIR=\"$(localedir)\" -DLOCALE_ALIAS_PATH=\"$(aliaspath)\" \
+-DLIBDIR=\"$(libdir)\" -DIN_LIBINTL @DEFS@
+CPPFLAGS = @CPPFLAGS@
+CFLAGS = @CFLAGS@
+LDFLAGS = @LDFLAGS@
+
+COMPILE = $(CC) -c $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS) $(XCFLAGS)
+
+HEADERS = $(COMHDRS) libgnuintl.h loadinfo.h
+COMHDRS = gmo.h gettextP.h hash-string.h plural-exp.h eval-plural.h os2compat.h
+SOURCES = $(COMSRCS) intl-compat.c
+COMSRCS = bindtextdom.c dcgettext.c dgettext.c gettext.c \
+finddomain.c loadmsgcat.c localealias.c textdomain.c l10nflist.c \
+explodename.c dcigettext.c dcngettext.c dngettext.c ngettext.c plural.y \
+plural-exp.c localcharset.c localename.c osdep.c os2compat.c
+OBJECTS = @INTLOBJS@ bindtextdom.$lo dcgettext.$lo dgettext.$lo gettext.$lo \
+finddomain.$lo loadmsgcat.$lo localealias.$lo textdomain.$lo l10nflist.$lo \
+explodename.$lo dcigettext.$lo dcngettext.$lo dngettext.$lo ngettext.$lo \
+plural.$lo plural-exp.$lo localcharset.$lo localename.$lo osdep.$lo
+GETTOBJS = intl-compat.$lo
+DISTFILES.common = Makefile.in \
+config.charset locale.alias ref-add.sin ref-del.sin $(HEADERS) $(SOURCES)
+DISTFILES.generated = plural.c
+DISTFILES.normal = VERSION
+DISTFILES.gettext = COPYING.LIB-2.0 COPYING.LIB-2.1 libintl.glibc
+DISTFILES.obsolete = xopen-msg.sed linux-msg.sed po2tbl.sed.in cat-compat.c \
+COPYING.LIB-2 gettext.h libgettext.h plural-eval.c
+
+# Libtool's library version information for libintl.
+# Before making a gettext release, the gettext maintainer must change this
+# according to the libtool documentation, section "Library interface versions".
+# Maintainers of other packages that include the intl directory must *not*
+# change these values.
+LTV_CURRENT=2
+LTV_REVISION=0
+LTV_AGE=0
+
+.SUFFIXES:
+.SUFFIXES: .c .y .o .lo .sin .sed
+.c.o:
+	$(COMPILE) $<
+.c.lo:
+	$(LIBTOOL) --mode=compile $(COMPILE) $<
+
+.y.c:
+	$(YACC) $(YFLAGS) --output $@ $<
+	rm -f $*.h
+
+.sin.sed:
+	sed -e '/^#/d' -e 's/@''PACKAGE''@/@PACKAGE@/g' $< > t-$@
+	mv t-$@ $@
+
+INCLUDES = -I.. -I. -I$(top_srcdir)/intl
+
+all: all-@USE_INCLUDED_LIBINTL@
+all-yes: libintl.$la libintl.h charset.alias ref-add.sed ref-del.sed
+all-no: all-no-@BUILD_INCLUDED_LIBINTL@
+all-no-yes: libgnuintl.$la
+all-no-no:
+
+libintl.a libgnuintl.a: $(OBJECTS)
+	rm -f $@
+	$(AR) cru $@ $(OBJECTS)
+	$(RANLIB) $@
+
+libintl.la libgnuintl.la: $(OBJECTS)
+	$(LIBTOOL) --mode=link \
+	  $(CC) $(CPPFLAGS) $(CFLAGS) $(XCFLAGS) $(LDFLAGS) -o $@ \
+	  $(OBJECTS) @LTLIBICONV@ -lc \
+	  -version-info $(LTV_CURRENT):$(LTV_REVISION):$(LTV_AGE) \
+	  -rpath $(libdir) \
+	  -no-undefined
+
+libintl.h: libgnuintl.h
+	cp $(srcdir)/libgnuintl.h libintl.h
+
+charset.alias: config.charset
+	$(SHELL) $(srcdir)/config.charset '@host@' > t-$@
+	mv t-$@ $@
+
+check: all
+
+# This installation goal is only used in GNU gettext.  Packages which
+# only use the library should use install instead.
+
+# We must not install the libintl.h/libintl.a files if we are on a
+# system which has the GNU gettext() function in its C library or in a
+# separate library.
+# If you want to use the one which comes with this version of the
+# package, you have to use `configure --with-included-gettext'.
+install: install-exec install-data
+install-exec: all
+	if test "$(PACKAGE)" = "gettext" \
+	   && test '@INTLOBJS@' = '$(GETTOBJS)'; then \
+	  $(mkinstalldirs) $(DESTDIR)$(libdir) $(DESTDIR)$(includedir); \
+	  $(INSTALL_DATA) libintl.h $(DESTDIR)$(includedir)/libintl.h; \
+	  $(LIBTOOL) --mode=install \
+	    $(INSTALL_DATA) libintl.$la $(DESTDIR)$(libdir)/libintl.$la; \
+	else \
+	  : ; \
+	fi
+	if test '@USE_INCLUDED_LIBINTL@' = yes; then \
+	  test @GLIBC21@ != no || $(mkinstalldirs) $(DESTDIR)$(libdir); \
+	  temp=$(DESTDIR)$(libdir)/t-charset.alias; \
+	  dest=$(DESTDIR)$(libdir)/charset.alias; \
+	  if test -f $(DESTDIR)$(libdir)/charset.alias; then \
+	    orig=$(DESTDIR)$(libdir)/charset.alias; \
+	    sed -f ref-add.sed $$orig > $$temp; \
+	    $(INSTALL_DATA) $$temp $$dest; \
+	    rm -f $$temp; \
+	  else \
+	    if test @GLIBC21@ = no; then \
+	      orig=charset.alias; \
+	      sed -f ref-add.sed $$orig > $$temp; \
+	      $(INSTALL_DATA) $$temp $$dest; \
+	      rm -f $$temp; \
+	    fi; \
+	  fi; \
+	  $(mkinstalldirs) $(DESTDIR)$(localedir); \
+	  test -f $(DESTDIR)$(localedir)/locale.alias \
+	    && orig=$(DESTDIR)$(localedir)/locale.alias \
+	    || orig=$(srcdir)/locale.alias; \
+	  temp=$(DESTDIR)$(localedir)/t-locale.alias; \
+	  dest=$(DESTDIR)$(localedir)/locale.alias; \
+	  sed -f ref-add.sed $$orig > $$temp; \
+	  $(INSTALL_DATA) $$temp $$dest; \
+	  rm -f $$temp; \
+	else \
+	  : ; \
+	fi
+install-data: all
+	if test "$(PACKAGE)" = "gettext"; then \
+	  $(mkinstalldirs) $(DESTDIR)$(gettextsrcdir); \
+	  $(INSTALL_DATA) VERSION $(DESTDIR)$(gettextsrcdir)/VERSION; \
+	  $(INSTALL_DATA) ChangeLog.inst $(DESTDIR)$(gettextsrcdir)/ChangeLog; \
+	  dists="COPYING.LIB-2.0 COPYING.LIB-2.1 $(DISTFILES.common)"; \
+	  for file in $$dists; do \
+	    $(INSTALL_DATA) $(srcdir)/$$file \
+			    $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	  chmod a+x $(DESTDIR)$(gettextsrcdir)/config.charset; \
+	  dists="$(DISTFILES.generated)"; \
+	  for file in $$dists; do \
+	    if test -f $$file; then dir=.; else dir=$(srcdir); fi; \
+	    $(INSTALL_DATA) $$dir/$$file \
+			    $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	  dists="$(DISTFILES.obsolete)"; \
+	  for file in $$dists; do \
+	    rm -f $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	else \
+	  : ; \
+	fi
+
+install-strip: install
+
+installdirs:
+	if test "$(PACKAGE)" = "gettext" \
+	   && test '@INTLOBJS@' = '$(GETTOBJS)'; then \
+	  $(mkinstalldirs) $(DESTDIR)$(libdir) $(DESTDIR)$(includedir); \
+	else \
+	  : ; \
+	fi
+	if test '@USE_INCLUDED_LIBINTL@' = yes; then \
+	  test @GLIBC21@ != no || $(mkinstalldirs) $(DESTDIR)$(libdir); \
+	  $(mkinstalldirs) $(DESTDIR)$(localedir); \
+	else \
+	  : ; \
+	fi
+	if test "$(PACKAGE)" = "gettext"; then \
+	  $(mkinstalldirs) $(DESTDIR)$(gettextsrcdir); \
+	else \
+	  : ; \
+	fi
+
+# Define this as empty until I found a useful application.
+installcheck:
+
+uninstall:
+	if test "$(PACKAGE)" = "gettext" \
+	   && test '@INTLOBJS@' = '$(GETTOBJS)'; then \
+	  rm -f $(DESTDIR)$(includedir)/libintl.h; \
+	  $(LIBTOOL) --mode=uninstall \
+	    rm -f $(DESTDIR)$(libdir)/libintl.$la; \
+	else \
+	  : ; \
+	fi
+	if test '@USE_INCLUDED_LIBINTL@' = yes; then \
+	  if test -f $(DESTDIR)$(libdir)/charset.alias; then \
+	    temp=$(DESTDIR)$(libdir)/t-charset.alias; \
+	    dest=$(DESTDIR)$(libdir)/charset.alias; \
+	    sed -f ref-del.sed $$dest > $$temp; \
+	    if grep '^# Packages using this file: $$' $$temp > /dev/null; then \
+	      rm -f $$dest; \
+	    else \
+	      $(INSTALL_DATA) $$temp $$dest; \
+	    fi; \
+	    rm -f $$temp; \
+	  fi; \
+	  if test -f $(DESTDIR)$(localedir)/locale.alias; then \
+	    temp=$(DESTDIR)$(localedir)/t-locale.alias; \
+	    dest=$(DESTDIR)$(localedir)/locale.alias; \
+	    sed -f ref-del.sed $$dest > $$temp; \
+	    if grep '^# Packages using this file: $$' $$temp > /dev/null; then \
+	      rm -f $$dest; \
+	    else \
+	      $(INSTALL_DATA) $$temp $$dest; \
+	    fi; \
+	    rm -f $$temp; \
+	  fi; \
+	else \
+	  : ; \
+	fi
+	if test "$(PACKAGE)" = "gettext"; then \
+	  for file in VERSION ChangeLog COPYING.LIB-2.0 COPYING.LIB-2.1 $(DISTFILES.common) $(DISTFILES.generated); do \
+	    rm -f $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	else \
+	  : ; \
+	fi
+
+info dvi:
+
+$(OBJECTS): ../config.h libgnuintl.h
+bindtextdom.$lo dcgettext.$lo dcigettext.$lo dcngettext.$lo dgettext.$lo dngettext.$lo finddomain.$lo gettext.$lo intl-compat.$lo loadmsgcat.$lo localealias.$lo ngettext.$lo textdomain.$lo: gettextP.h gmo.h loadinfo.h
+dcigettext.$lo: hash-string.h
+explodename.$lo l10nflist.$lo: loadinfo.h
+dcigettext.$lo loadmsgcat.$lo plural.$lo plural-exp.$lo: plural-exp.h
+dcigettext.$lo: eval-plural.h
+
+tags: TAGS
+
+TAGS: $(HEADERS) $(SOURCES)
+	here=`pwd`; cd $(srcdir) && etags -o $$here/TAGS $(HEADERS) $(SOURCES)
+
+id: ID
+
+ID: $(HEADERS) $(SOURCES)
+	here=`pwd`; cd $(srcdir) && mkid -f$$here/ID $(HEADERS) $(SOURCES)
+
+
+mostlyclean:
+	rm -f *.a *.la *.o *.lo core core.*
+	rm -f libintl.h charset.alias ref-add.sed ref-del.sed
+	rm -f -r .libs _libs
+
+clean: mostlyclean
+
+distclean: clean
+	rm -f Makefile ID TAGS
+	if test "$(PACKAGE)" = gettext; then \
+	  rm -f ChangeLog.inst $(DISTFILES.normal); \
+	else \
+	  : ; \
+	fi
+
+maintainer-clean: distclean
+	@echo "This command is intended for maintainers to use;"
+	@echo "it deletes files that may require special tools to rebuild."
+
+
+# GNU gettext needs not contain the file `VERSION' but contains some
+# other files which should not be distributed in other packages.
+distdir = ../$(PACKAGE)-$(VERSION)/$(subdir)
+dist distdir: Makefile
+	if test "$(PACKAGE)" = gettext; then \
+	  additional="$(DISTFILES.gettext)"; \
+	else \
+	  additional="$(DISTFILES.normal)"; \
+	fi; \
+	$(MAKE) $(DISTFILES.common) $(DISTFILES.generated) $$additional; \
+	for file in ChangeLog $(DISTFILES.common) $(DISTFILES.generated) $$additional; do \
+	  if test -f $$file; then dir=.; else dir=$(srcdir); fi; \
+	  cp -p $$dir/$$file $(distdir); \
+	done
+
+Makefile: Makefile.in ../config.status
+	cd .. \
+	  && CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
+
+# Tell versions [3.59,3.63) of GNU make not to export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/sed/intl/VERSION b/src/sed/intl/VERSION
new file mode 100644
index 0000000..5f40d9a
--- /dev/null
+++ b/src/sed/intl/VERSION
@@ -0,0 +1 @@
+GNU gettext library from gettext-0.11
diff --git a/src/sed/intl/bindtextdom.c b/src/sed/intl/bindtextdom.c
new file mode 100644
index 0000000..7c36989
--- /dev/null
+++ b/src/sed/intl/bindtextdom.c
@@ -0,0 +1,369 @@
+/* Implementation of the bindtextdomain(3) function
+   Copyright (C) 1995-1998, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgnuintl.h"
+#endif
+#include "gettextP.h"
+
+#ifdef _LIBC
+/* We have to handle multi-threaded applications.  */
+# include <bits/libc-lock.h>
+#else
+/* Provide dummy implementation if this is outside glibc.  */
+# define __libc_rwlock_define(CLASS, NAME)
+# define __libc_rwlock_wrlock(NAME)
+# define __libc_rwlock_unlock(NAME)
+#endif
+
+/* The internal variables in the standalone libintl.a must have different
+   names than the internal variables in GNU libc, otherwise programs
+   using libintl.a cannot be linked statically.  */
+#if !defined _LIBC
+# define _nl_default_dirname _nl_default_dirname__
+# define _nl_domain_bindings _nl_domain_bindings__
+#endif
+
+/* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>.  */
+#ifndef offsetof
+# define offsetof(type,ident) ((size_t)&(((type*)0)->ident))
+#endif
+
+/* @@ end of prolog @@ */
+
+/* Contains the default location of the message catalogs.  */
+extern const char _nl_default_dirname[];
+
+/* List with bindings of specific domains.  */
+extern struct binding *_nl_domain_bindings;
+
+/* Lock variable to protect the global data in the gettext implementation.  */
+__libc_rwlock_define (extern, _nl_state_lock)
+
+
+/* Names for the libintl functions are a problem.  They must not clash
+   with existing names and they should follow ANSI C.  But this source
+   code is also used in GNU C Library where the names have a __
+   prefix.  So we have to make a difference here.  */
+#ifdef _LIBC
+# define BINDTEXTDOMAIN __bindtextdomain
+# define BIND_TEXTDOMAIN_CODESET __bind_textdomain_codeset
+# ifndef strdup
+#  define strdup(str) __strdup (str)
+# endif
+#else
+# define BINDTEXTDOMAIN bindtextdomain__
+# define BIND_TEXTDOMAIN_CODESET bind_textdomain_codeset__
+#endif
+
+/* Prototypes for local functions.  */
+static void set_binding_values PARAMS ((const char *domainname,
+					const char **dirnamep,
+					const char **codesetp));
+
+/* Specifies the directory name *DIRNAMEP and the output codeset *CODESETP
+   to be used for the DOMAINNAME message catalog.
+   If *DIRNAMEP or *CODESETP is NULL, the corresponding attribute is not
+   modified, only the current value is returned.
+   If DIRNAMEP or CODESETP is NULL, the corresponding attribute is neither
+   modified nor returned.  */
+static void
+set_binding_values (domainname, dirnamep, codesetp)
+     const char *domainname;
+     const char **dirnamep;
+     const char **codesetp;
+{
+  struct binding *binding;
+  int modified;
+
+  /* Some sanity checks.  */
+  if (domainname == NULL || domainname[0] == '\0')
+    {
+      if (dirnamep)
+	*dirnamep = NULL;
+      if (codesetp)
+	*codesetp = NULL;
+      return;
+    }
+
+  __libc_rwlock_wrlock (_nl_state_lock);
+
+  modified = 0;
+
+  for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next)
+    {
+      int compare = strcmp (domainname, binding->domainname);
+      if (compare == 0)
+	/* We found it!  */
+	break;
+      if (compare < 0)
+	{
+	  /* It is not in the list.  */
+	  binding = NULL;
+	  break;
+	}
+    }
+
+  if (binding != NULL)
+    {
+      if (dirnamep)
+	{
+	  const char *dirname = *dirnamep;
+
+	  if (dirname == NULL)
+	    /* The current binding has be to returned.  */
+	    *dirnamep = binding->dirname;
+	  else
+	    {
+	      /* The domain is already bound.  If the new value and the old
+		 one are equal we simply do nothing.  Otherwise replace the
+		 old binding.  */
+	      char *result = binding->dirname;
+	      if (strcmp (dirname, result) != 0)
+		{
+		  if (strcmp (dirname, _nl_default_dirname) == 0)
+		    result = (char *) _nl_default_dirname;
+		  else
+		    {
+#if defined _LIBC || defined HAVE_STRDUP
+		      result = strdup (dirname);
+#else
+		      size_t len = strlen (dirname) + 1;
+		      result = (char *) malloc (len);
+		      if (__builtin_expect (result != NULL, 1))
+			memcpy (result, dirname, len);
+#endif
+		    }
+
+		  if (__builtin_expect (result != NULL, 1))
+		    {
+		      if (binding->dirname != _nl_default_dirname)
+			free (binding->dirname);
+
+		      binding->dirname = result;
+		      modified = 1;
+		    }
+		}
+	      *dirnamep = result;
+	    }
+	}
+
+      if (codesetp)
+	{
+	  const char *codeset = *codesetp;
+
+	  if (codeset == NULL)
+	    /* The current binding has be to returned.  */
+	    *codesetp = binding->codeset;
+	  else
+	    {
+	      /* The domain is already bound.  If the new value and the old
+		 one are equal we simply do nothing.  Otherwise replace the
+		 old binding.  */
+	      char *result = binding->codeset;
+	      if (result == NULL || strcmp (codeset, result) != 0)
+		{
+#if defined _LIBC || defined HAVE_STRDUP
+		  result = strdup (codeset);
+#else
+		  size_t len = strlen (codeset) + 1;
+		  result = (char *) malloc (len);
+		  if (__builtin_expect (result != NULL, 1))
+		    memcpy (result, codeset, len);
+#endif
+
+		  if (__builtin_expect (result != NULL, 1))
+		    {
+		      if (binding->codeset != NULL)
+			free (binding->codeset);
+
+		      binding->codeset = result;
+		      binding->codeset_cntr++;
+		      modified = 1;
+		    }
+		}
+	      *codesetp = result;
+	    }
+	}
+    }
+  else if ((dirnamep == NULL || *dirnamep == NULL)
+	   && (codesetp == NULL || *codesetp == NULL))
+    {
+      /* Simply return the default values.  */
+      if (dirnamep)
+	*dirnamep = _nl_default_dirname;
+      if (codesetp)
+	*codesetp = NULL;
+    }
+  else
+    {
+      /* We have to create a new binding.  */
+      size_t len = strlen (domainname) + 1;
+      struct binding *new_binding =
+	(struct binding *) malloc (offsetof (struct binding, domainname) + len);
+
+      if (__builtin_expect (new_binding == NULL, 0))
+	goto failed;
+
+      memcpy (new_binding->domainname, domainname, len);
+
+      if (dirnamep)
+	{
+	  const char *dirname = *dirnamep;
+
+	  if (dirname == NULL)
+	    /* The default value.  */
+	    dirname = _nl_default_dirname;
+	  else
+	    {
+	      if (strcmp (dirname, _nl_default_dirname) == 0)
+		dirname = _nl_default_dirname;
+	      else
+		{
+		  char *result;
+#if defined _LIBC || defined HAVE_STRDUP
+		  result = strdup (dirname);
+		  if (__builtin_expect (result == NULL, 0))
+		    goto failed_dirname;
+#else
+		  size_t len = strlen (dirname) + 1;
+		  result = (char *) malloc (len);
+		  if (__builtin_expect (result == NULL, 0))
+		    goto failed_dirname;
+		  memcpy (result, dirname, len);
+#endif
+		  dirname = result;
+		}
+	    }
+	  *dirnamep = dirname;
+	  new_binding->dirname = (char *) dirname;
+	}
+      else
+	/* The default value.  */
+	new_binding->dirname = (char *) _nl_default_dirname;
+
+      new_binding->codeset_cntr = 0;
+
+      if (codesetp)
+	{
+	  const char *codeset = *codesetp;
+
+	  if (codeset != NULL)
+	    {
+	      char *result;
+
+#if defined _LIBC || defined HAVE_STRDUP
+	      result = strdup (codeset);
+	      if (__builtin_expect (result == NULL, 0))
+		goto failed_codeset;
+#else
+	      size_t len = strlen (codeset) + 1;
+	      result = (char *) malloc (len);
+	      if (__builtin_expect (result == NULL, 0))
+		goto failed_codeset;
+	      memcpy (result, codeset, len);
+#endif
+	      codeset = result;
+	      new_binding->codeset_cntr++;
+	    }
+	  *codesetp = codeset;
+	  new_binding->codeset = (char *) codeset;
+	}
+      else
+	new_binding->codeset = NULL;
+
+      /* Now enqueue it.  */
+      if (_nl_domain_bindings == NULL
+	  || strcmp (domainname, _nl_domain_bindings->domainname) < 0)
+	{
+	  new_binding->next = _nl_domain_bindings;
+	  _nl_domain_bindings = new_binding;
+	}
+      else
+	{
+	  binding = _nl_domain_bindings;
+	  while (binding->next != NULL
+		 && strcmp (domainname, binding->next->domainname) > 0)
+	    binding = binding->next;
+
+	  new_binding->next = binding->next;
+	  binding->next = new_binding;
+	}
+
+      modified = 1;
+
+      /* Here we deal with memory allocation failures.  */
+      if (0)
+	{
+	failed_codeset:
+	  if (new_binding->dirname != _nl_default_dirname)
+	    free (new_binding->dirname);
+	failed_dirname:
+	  free (new_binding);
+	failed:
+	  if (dirnamep)
+	    *dirnamep = NULL;
+	  if (codesetp)
+	    *codesetp = NULL;
+	}
+    }
+
+  /* If we modified any binding, we flush the caches.  */
+  if (modified)
+    ++_nl_msg_cat_cntr;
+
+  __libc_rwlock_unlock (_nl_state_lock);
+}
+
+/* Specify that the DOMAINNAME message catalog will be found
+   in DIRNAME rather than in the system locale data base.  */
+char *
+BINDTEXTDOMAIN (domainname, dirname)
+     const char *domainname;
+     const char *dirname;
+{
+  set_binding_values (domainname, &dirname, NULL);
+  return (char *) dirname;
+}
+
+/* Specify the character encoding in which the messages from the
+   DOMAINNAME message catalog will be returned.  */
+char *
+BIND_TEXTDOMAIN_CODESET (domainname, codeset)
+     const char *domainname;
+     const char *codeset;
+{
+  set_binding_values (domainname, NULL, &codeset);
+  return (char *) codeset;
+}
+
+#ifdef _LIBC
+/* Aliases for function names in GNU C Library.  */
+weak_alias (__bindtextdomain, bindtextdomain);
+weak_alias (__bind_textdomain_codeset, bind_textdomain_codeset);
+#endif
diff --git a/src/sed/intl/config.charset b/src/sed/intl/config.charset
new file mode 100755
index 0000000..263cbcf
--- /dev/null
+++ b/src/sed/intl/config.charset
@@ -0,0 +1,440 @@
+#! /bin/sh
+# Output a system dependent table of character encoding aliases.
+#
+#   Copyright (C) 2000-2002 Free Software Foundation, Inc.
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU Library General Public License as published
+#   by the Free Software Foundation; either version 2, or (at your option)
+#   any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#   Library General Public License for more details.
+#
+#   You should have received a copy of the GNU Library General Public
+#   License along with this program; if not, write to the Free Software
+#   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+#   USA.
+#
+# The table consists of lines of the form
+#    ALIAS  CANONICAL
+#
+# ALIAS is the (system dependent) result of "nl_langinfo (CODESET)".
+# ALIAS is compared in a case sensitive way.
+#
+# CANONICAL is the GNU canonical name for this character encoding.
+# It must be an encoding supported by libiconv. Support by GNU libc is
+# also desirable. CANONICAL is case insensitive. Usually an upper case
+# MIME charset name is preferred.
+# The current list of GNU canonical charset names is as follows.
+#
+#       name                         used by which systems         a MIME name?
+#   ASCII, ANSI_X3.4-1968     glibc solaris freebsd
+#   ISO-8859-1                glibc aix hpux irix osf solaris freebsd   yes
+#   ISO-8859-2                glibc aix hpux irix osf solaris freebsd   yes
+#   ISO-8859-3                glibc                                     yes
+#   ISO-8859-4                osf solaris freebsd                       yes
+#   ISO-8859-5                glibc aix hpux irix osf solaris freebsd   yes
+#   ISO-8859-6                glibc aix hpux solaris                    yes
+#   ISO-8859-7                glibc aix hpux irix osf solaris           yes
+#   ISO-8859-8                glibc aix hpux osf solaris                yes
+#   ISO-8859-9                glibc aix hpux irix osf solaris           yes
+#   ISO-8859-13               glibc
+#   ISO-8859-15               glibc aix osf solaris freebsd
+#   KOI8-R                    glibc solaris freebsd                     yes
+#   KOI8-U                    glibc freebsd                             yes
+#   CP437                     dos
+#   CP775                     dos
+#   CP850                     aix osf dos
+#   CP852                     dos
+#   CP855                     dos
+#   CP856                     aix
+#   CP857                     dos
+#   CP861                     dos
+#   CP862                     dos
+#   CP864                     dos
+#   CP865                     dos
+#   CP866                     freebsd dos
+#   CP869                     dos
+#   CP874                     win32 dos
+#   CP922                     aix
+#   CP932                     aix win32 dos
+#   CP943                     aix
+#   CP949                     osf win32 dos
+#   CP950                     win32 dos
+#   CP1046                    aix
+#   CP1124                    aix
+#   CP1129                    aix
+#   CP1250                    win32
+#   CP1251                    glibc win32
+#   CP1252                    aix win32
+#   CP1253                    win32
+#   CP1254                    win32
+#   CP1255                    win32
+#   CP1256                    win32
+#   CP1257                    win32
+#   GB2312                    glibc aix hpux irix solaris freebsd       yes
+#   EUC-JP                    glibc aix hpux irix osf solaris freebsd   yes
+#   EUC-KR                    glibc aix hpux irix osf solaris freebsd   yes
+#   EUC-TW                    glibc aix hpux irix osf solaris
+#   BIG5                      glibc aix hpux osf solaris freebsd        yes
+#   BIG5-HKSCS                glibc
+#   GBK                       aix osf win32 dos
+#   GB18030                   glibc
+#   SHIFT_JIS                 hpux osf solaris freebsd                  yes
+#   JOHAB                     glibc win32
+#   TIS-620                   glibc aix hpux osf solaris
+#   VISCII                    glibc                                     yes
+#   HP-ROMAN8                 hpux
+#   HP-ARABIC8                hpux
+#   HP-GREEK8                 hpux
+#   HP-HEBREW8                hpux
+#   HP-TURKISH8               hpux
+#   HP-KANA8                  hpux
+#   DEC-KANJI                 osf
+#   DEC-HANYU                 osf
+#   UTF-8                     glibc aix hpux osf solaris                yes
+#
+# Note: Names which are not marked as being a MIME name should not be used in
+# Internet protocols for information interchange (mail, news, etc.).
+#
+# Note: ASCII and ANSI_X3.4-1968 are synonymous canonical names. Applications
+# must understand both names and treat them as equivalent.
+#
+# The first argument passed to this file is the canonical host specification,
+#    CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or
+#    CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+
+host="$1"
+os=`echo "$host" | sed -e 's/^[^-]*-[^-]*-\(.*\)$/\1/'`
+echo "# This file contains a table of character encoding aliases,"
+echo "# suitable for operating system '${os}'."
+echo "# It was automatically generated from config.charset."
+# List of references, updated during installation:
+echo "# Packages using this file: "
+case "$os" in
+    linux* | *-gnu*)
+	# With glibc-2.1 or newer, we don't need any canonicalization,
+	# because glibc has iconv and both glibc and libiconv support all
+	# GNU canonical names directly. Therefore, the Makefile does not
+	# need to install the alias file at all.
+	# The following applies only to glibc-2.0.x and older libcs.
+	echo "ISO_646.IRV:1983 ASCII"
+	;;
+    aix*)
+	echo "ISO8859-1 ISO-8859-1"
+	echo "ISO8859-2 ISO-8859-2"
+	echo "ISO8859-5 ISO-8859-5"
+	echo "ISO8859-6 ISO-8859-6"
+	echo "ISO8859-7 ISO-8859-7"
+	echo "ISO8859-8 ISO-8859-8"
+	echo "ISO8859-9 ISO-8859-9"
+	echo "ISO8859-15 ISO-8859-15"
+	echo "IBM-850 CP850"
+	echo "IBM-856 CP856"
+	echo "IBM-921 ISO-8859-13"
+	echo "IBM-922 CP922"
+	echo "IBM-932 CP932"
+	echo "IBM-943 CP943"
+	echo "IBM-1046 CP1046"
+	echo "IBM-1124 CP1124"
+	echo "IBM-1129 CP1129"
+	echo "IBM-1252 CP1252"
+	echo "IBM-eucCN GB2312"
+	echo "IBM-eucJP EUC-JP"
+	echo "IBM-eucKR EUC-KR"
+	echo "IBM-eucTW EUC-TW"
+	echo "big5 BIG5"
+	echo "GBK GBK"
+	echo "TIS-620 TIS-620"
+	echo "UTF-8 UTF-8"
+	;;
+    hpux*)
+	echo "iso88591 ISO-8859-1"
+	echo "iso88592 ISO-8859-2"
+	echo "iso88595 ISO-8859-5"
+	echo "iso88596 ISO-8859-6"
+	echo "iso88597 ISO-8859-7"
+	echo "iso88598 ISO-8859-8"
+	echo "iso88599 ISO-8859-9"
+	echo "iso885915 ISO-8859-15"
+	echo "roman8 HP-ROMAN8"
+	echo "arabic8 HP-ARABIC8"
+	echo "greek8 HP-GREEK8"
+	echo "hebrew8 HP-HEBREW8"
+	echo "turkish8 HP-TURKISH8"
+	echo "kana8 HP-KANA8"
+	echo "tis620 TIS-620"
+	echo "big5 BIG5"
+	echo "eucJP EUC-JP"
+	echo "eucKR EUC-KR"
+	echo "eucTW EUC-TW"
+	echo "hp15CN GB2312"
+	#echo "ccdc ?" # what is this?
+	echo "SJIS SHIFT_JIS"
+	echo "utf8 UTF-8"
+	;;
+    irix*)
+	echo "ISO8859-1 ISO-8859-1"
+	echo "ISO8859-2 ISO-8859-2"
+	echo "ISO8859-5 ISO-8859-5"
+	echo "ISO8859-7 ISO-8859-7"
+	echo "ISO8859-9 ISO-8859-9"
+	echo "eucCN GB2312"
+	echo "eucJP EUC-JP"
+	echo "eucKR EUC-KR"
+	echo "eucTW EUC-TW"
+	;;
+    osf*)
+	echo "ISO8859-1 ISO-8859-1"
+	echo "ISO8859-2 ISO-8859-2"
+	echo "ISO8859-4 ISO-8859-4"
+	echo "ISO8859-5 ISO-8859-5"
+	echo "ISO8859-7 ISO-8859-7"
+	echo "ISO8859-8 ISO-8859-8"
+	echo "ISO8859-9 ISO-8859-9"
+	echo "ISO8859-15 ISO-8859-15"
+	echo "cp850 CP850"
+	echo "big5 BIG5"
+	echo "dechanyu DEC-HANYU"
+	echo "dechanzi GB2312"
+	echo "deckanji DEC-KANJI"
+	echo "deckorean EUC-KR"
+	echo "eucJP EUC-JP"
+	echo "eucKR EUC-KR"
+	echo "eucTW EUC-TW"
+	echo "GBK GBK"
+	echo "KSC5601 CP949"
+	echo "sdeckanji EUC-JP"
+	echo "SJIS SHIFT_JIS"
+	echo "TACTIS TIS-620"
+	echo "UTF-8 UTF-8"
+	;;
+    solaris*)
+	echo "646 ASCII"
+	echo "ISO8859-1 ISO-8859-1"
+	echo "ISO8859-2 ISO-8859-2"
+	echo "ISO8859-4 ISO-8859-4"
+	echo "ISO8859-5 ISO-8859-5"
+	echo "ISO8859-6 ISO-8859-6"
+	echo "ISO8859-7 ISO-8859-7"
+	echo "ISO8859-8 ISO-8859-8"
+	echo "ISO8859-9 ISO-8859-9"
+	echo "ISO8859-15 ISO-8859-15"
+	echo "koi8-r KOI8-R"
+	echo "BIG5 BIG5"
+	echo "gb2312 GB2312"
+	echo "cns11643 EUC-TW"
+	echo "5601 EUC-KR"
+	echo "eucJP EUC-JP"
+	echo "PCK SHIFT_JIS"
+	echo "TIS620.2533 TIS-620"
+	#echo "sun_eu_greek ?" # what is this?
+	echo "UTF-8 UTF-8"
+	;;
+    freebsd* | os2*)
+	# FreeBSD 4.2 doesn't have nl_langinfo(CODESET); therefore
+	# localcharset.c falls back to using the full locale name
+	# from the environment variables.
+	# Likewise for OS/2. OS/2 has XFree86 just like FreeBSD. Just
+	# reuse FreeBSD's locale data for OS/2.
+	echo "C ASCII"
+	echo "US-ASCII ASCII"
+	for l in la_LN lt_LN; do
+	  echo "$l.ASCII ASCII"
+	done
+	for l in da_DK de_AT de_CH de_DE en_AU en_CA en_GB en_US es_ES \
+	         fi_FI fr_BE fr_CA fr_CH fr_FR is_IS it_CH it_IT la_LN \
+	         lt_LN nl_BE nl_NL no_NO pt_PT sv_SE; do
+	  echo "$l.ISO_8859-1 ISO-8859-1"
+	  echo "$l.DIS_8859-15 ISO-8859-15"
+	done
+	for l in cs_CZ hr_HR hu_HU la_LN lt_LN pl_PL sl_SI; do
+	  echo "$l.ISO_8859-2 ISO-8859-2"
+	done
+	for l in la_LN lt_LT; do
+	  echo "$l.ISO_8859-4 ISO-8859-4"
+	done
+	for l in ru_RU ru_SU; do
+	  echo "$l.KOI8-R KOI8-R"
+	  echo "$l.ISO_8859-5 ISO-8859-5"
+	  echo "$l.CP866 CP866"
+	done
+	echo "uk_UA.KOI8-U KOI8-U"
+	echo "zh_TW.BIG5 BIG5"
+	echo "zh_TW.Big5 BIG5"
+	echo "zh_CN.EUC GB2312"
+	echo "ja_JP.EUC EUC-JP"
+	echo "ja_JP.SJIS SHIFT_JIS"
+	echo "ja_JP.Shift_JIS SHIFT_JIS"
+	echo "ko_KR.EUC EUC-KR"
+	;;
+    beos*)
+	# BeOS has a single locale, and it has UTF-8 encoding.
+	echo "* UTF-8"
+	;;
+    msdosdjgpp*)
+	# DJGPP 2.03 doesn't have nl_langinfo(CODESET); therefore
+	# localcharset.c falls back to using the full locale name
+	# from the environment variables.
+	echo "#"
+	echo "# The encodings given here may not all be correct."
+	echo "# If you find that the encoding given for your language and"
+	echo "# country is not the one your DOS machine actually uses, just"
+	echo "# correct it in this file, and send a mail to"
+	echo "# Juan Manuel Guerrero <st001906@hrz1.hrz.tu-darmstadt.de>"
+	echo "# and Bruno Haible <haible@clisp.cons.org>."
+	echo "#"
+	echo "C ASCII"
+	# ISO-8859-1 languages
+	echo "ca CP850"
+	echo "ca_ES CP850"
+	echo "da CP865"    # not CP850 ??
+	echo "da_DK CP865" # not CP850 ??
+	echo "de CP850"
+	echo "de_AT CP850"
+	echo "de_CH CP850"
+	echo "de_DE CP850"
+	echo "en CP850"
+	echo "en_AU CP850" # not CP437 ??
+	echo "en_CA CP850"
+	echo "en_GB CP850"
+	echo "en_NZ CP437"
+	echo "en_US CP437"
+	echo "en_ZA CP850" # not CP437 ??
+	echo "es CP850"
+	echo "es_AR CP850"
+	echo "es_BO CP850"
+	echo "es_CL CP850"
+	echo "es_CO CP850"
+	echo "es_CR CP850"
+	echo "es_CU CP850"
+	echo "es_DO CP850"
+	echo "es_EC CP850"
+	echo "es_ES CP850"
+	echo "es_GT CP850"
+	echo "es_HN CP850"
+	echo "es_MX CP850"
+	echo "es_NI CP850"
+	echo "es_PA CP850"
+	echo "es_PY CP850"
+	echo "es_PE CP850"
+	echo "es_SV CP850"
+	echo "es_UY CP850"
+	echo "es_VE CP850"
+	echo "et CP850"
+	echo "et_EE CP850"
+	echo "eu CP850"
+	echo "eu_ES CP850"
+	echo "fi CP850"
+	echo "fi_FI CP850"
+	echo "fr CP850"
+	echo "fr_BE CP850"
+	echo "fr_CA CP850"
+	echo "fr_CH CP850"
+	echo "fr_FR CP850"
+	echo "ga CP850"
+	echo "ga_IE CP850"
+	echo "gd CP850"
+	echo "gd_GB CP850"
+	echo "gl CP850"
+	echo "gl_ES CP850"
+	echo "id CP850"    # not CP437 ??
+	echo "id_ID CP850" # not CP437 ??
+	echo "is CP861"    # not CP850 ??
+	echo "is_IS CP861" # not CP850 ??
+	echo "it CP850"
+	echo "it_CH CP850"
+	echo "it_IT CP850"
+	echo "lt CP775"
+	echo "lt_LT CP775"
+	echo "lv CP775"
+	echo "lv_LV CP775"
+	echo "nb CP865"    # not CP850 ??
+	echo "nb_NO CP865" # not CP850 ??
+	echo "nl CP850"
+	echo "nl_BE CP850"
+	echo "nl_NL CP850"
+	echo "nn CP865"    # not CP850 ??
+	echo "nn_NO CP865" # not CP850 ??
+	echo "no CP865"    # not CP850 ??
+	echo "no_NO CP865" # not CP850 ??
+	echo "pt CP850"
+	echo "pt_BR CP850"
+	echo "pt_PT CP850"
+	echo "sv CP850"
+	echo "sv_SE CP850"
+	# ISO-8859-2 languages
+	echo "cs CP852"
+	echo "cs_CZ CP852"
+	echo "hr CP852"
+	echo "hr_HR CP852"
+	echo "hu CP852"
+	echo "hu_HU CP852"
+	echo "pl CP852"
+	echo "pl_PL CP852"
+	echo "ro CP852"
+	echo "ro_RO CP852"
+	echo "sk CP852"
+	echo "sk_SK CP852"
+	echo "sl CP852"
+	echo "sl_SI CP852"
+	echo "sq CP852"
+	echo "sq_AL CP852"
+	echo "sr CP852"    # CP852 or CP866 or CP855 ??
+	echo "sr_YU CP852" # CP852 or CP866 or CP855 ??
+	# ISO-8859-3 languages
+	echo "mt CP850"
+	echo "mt_MT CP850"
+	# ISO-8859-5 languages
+	echo "be CP866"
+	echo "be_BE CP866"
+	echo "bg CP866"    # not CP855 ??
+	echo "bg_BG CP866" # not CP855 ??
+	echo "mk CP866"    # not CP855 ??
+	echo "mk_MK CP866" # not CP855 ??
+	echo "ru KOI8-R"    # not CP866 ??
+	echo "ru_RU KOI8-R" # not CP866 ??
+	# ISO-8859-6 languages
+	echo "ar CP864"
+	echo "ar_AE CP864"
+	echo "ar_DZ CP864"
+	echo "ar_EG CP864"
+	echo "ar_IQ CP864"
+	echo "ar_IR CP864"
+	echo "ar_JO CP864"
+	echo "ar_KW CP864"
+	echo "ar_MA CP864"
+	echo "ar_OM CP864"
+	echo "ar_QA CP864"
+	echo "ar_SA CP864"
+	echo "ar_SY CP864"
+	# ISO-8859-7 languages
+	echo "el CP869"
+	echo "el_GR CP869"
+	# ISO-8859-8 languages
+	echo "he CP862"
+	echo "he_IL CP862"
+	# ISO-8859-9 languages
+	echo "tr CP857"
+	echo "tr_TR CP857"
+	# Japanese
+	echo "ja CP932"
+	echo "ja_JP CP932"
+	# Chinese
+	echo "zh_CN GBK"
+	echo "zh_TW CP950" # not CP938 ??
+	# Korean
+	echo "kr CP949"    # not CP934 ??
+	echo "kr_KR CP949" # not CP934 ??
+	# Thai
+	echo "th CP874"
+	echo "th_TH CP874"
+	# Other
+	echo "eo CP850"
+	echo "eo_EO CP850"
+	;;
+esac
diff --git a/src/sed/intl/dcgettext.c b/src/sed/intl/dcgettext.c
new file mode 100644
index 0000000..de3e0c0
--- /dev/null
+++ b/src/sed/intl/dcgettext.c
@@ -0,0 +1,58 @@
+/* Implementation of the dcgettext(3) function.
+   Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "gettextP.h"
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgnuintl.h"
+#endif
+
+/* @@ end of prolog @@ */
+
+/* Names for the libintl functions are a problem.  They must not clash
+   with existing names and they should follow ANSI C.  But this source
+   code is also used in GNU C Library where the names have a __
+   prefix.  So we have to make a difference here.  */
+#ifdef _LIBC
+# define DCGETTEXT __dcgettext
+# define DCIGETTEXT __dcigettext
+#else
+# define DCGETTEXT dcgettext__
+# define DCIGETTEXT dcigettext__
+#endif
+
+/* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY
+   locale.  */
+char *
+DCGETTEXT (domainname, msgid, category)
+     const char *domainname;
+     const char *msgid;
+     int category;
+{
+  return DCIGETTEXT (domainname, msgid, NULL, 0, 0, category);
+}
+
+#ifdef _LIBC
+/* Alias for function name in GNU C Library.  */
+weak_alias (__dcgettext, dcgettext);
+#endif
diff --git a/src/sed/intl/dcigettext.c b/src/sed/intl/dcigettext.c
new file mode 100644
index 0000000..36d2c7f
--- /dev/null
+++ b/src/sed/intl/dcigettext.c
@@ -0,0 +1,1167 @@
+/* Implementation of the internal dcigettext function.
+   Copyright (C) 1995-1999, 2000-2002 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* Tell glibc's <string.h> to provide a prototype for mempcpy().
+   This must come before <config.h> because <config.h> may include
+   <features.h>, and once <features.h> has been included, it's too late.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE	1
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+
+#ifdef __GNUC__
+# define alloca __builtin_alloca
+# define HAVE_ALLOCA 1
+#else
+# if defined HAVE_ALLOCA_H || defined _LIBC
+#  include <alloca.h>
+# else
+#  ifdef _AIX
+ #pragma alloca
+#  else
+#   ifndef alloca
+char *alloca ();
+#   endif
+#  endif
+# endif
+#endif
+
+#include <errno.h>
+#ifndef errno
+extern int errno;
+#endif
+#ifndef __set_errno
+# define __set_errno(val) errno = (val)
+#endif
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if defined HAVE_UNISTD_H || defined _LIBC
+# include <unistd.h>
+#endif
+
+#include <locale.h>
+
+#if defined HAVE_SYS_PARAM_H || defined _LIBC
+# include <sys/param.h>
+#endif
+
+#include "gettextP.h"
+#include "plural-exp.h"
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgnuintl.h"
+#endif
+#include "hash-string.h"
+
+/* Thread safetyness.  */
+#ifdef _LIBC
+# include <bits/libc-lock.h>
+#else
+/* Provide dummy implementation if this is outside glibc.  */
+# define __libc_lock_define_initialized(CLASS, NAME)
+# define __libc_lock_lock(NAME)
+# define __libc_lock_unlock(NAME)
+# define __libc_rwlock_define_initialized(CLASS, NAME)
+# define __libc_rwlock_rdlock(NAME)
+# define __libc_rwlock_unlock(NAME)
+#endif
+
+/* Alignment of types.  */
+#if defined __GNUC__ && __GNUC__ >= 2
+# define alignof(TYPE) __alignof__ (TYPE)
+#else
+# define alignof(TYPE) \
+    ((int) &((struct { char dummy1; TYPE dummy2; } *) 0)->dummy2)
+#endif
+
+/* The internal variables in the standalone libintl.a must have different
+   names than the internal variables in GNU libc, otherwise programs
+   using libintl.a cannot be linked statically.  */
+#if !defined _LIBC
+# define _nl_default_default_domain _nl_default_default_domain__
+# define _nl_current_default_domain _nl_current_default_domain__
+# define _nl_default_dirname _nl_default_dirname__
+# define _nl_domain_bindings _nl_domain_bindings__
+#endif
+
+/* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>.  */
+#ifndef offsetof
+# define offsetof(type,ident) ((size_t)&(((type*)0)->ident))
+#endif
+
+/* @@ end of prolog @@ */
+
+#ifdef _LIBC
+/* Rename the non ANSI C functions.  This is required by the standard
+   because some ANSI C functions will require linking with this object
+   file and the name space must not be polluted.  */
+# define getcwd __getcwd
+# ifndef stpcpy
+#  define stpcpy __stpcpy
+# endif
+# define tfind __tfind
+#else
+# if !defined HAVE_GETCWD
+char *getwd ();
+#  define getcwd(buf, max) getwd (buf)
+# else
+char *getcwd ();
+# endif
+# ifndef HAVE_STPCPY
+static char *stpcpy PARAMS ((char *dest, const char *src));
+# endif
+# ifndef HAVE_MEMPCPY
+static void *mempcpy PARAMS ((void *dest, const void *src, size_t n));
+# endif
+#endif
+
+/* Amount to increase buffer size by in each try.  */
+#define PATH_INCR 32
+
+/* The following is from pathmax.h.  */
+/* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define
+   PATH_MAX but might cause redefinition warnings when sys/param.h is
+   later included (as on MORE/BSD 4.3).  */
+#if defined _POSIX_VERSION || (defined HAVE_LIMITS_H && !defined __GNUC__)
+# include <limits.h>
+#endif
+
+#ifndef _POSIX_PATH_MAX
+# define _POSIX_PATH_MAX 255
+#endif
+
+#if !defined PATH_MAX && defined _PC_PATH_MAX
+# define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf ("/", _PC_PATH_MAX))
+#endif
+
+/* Don't include sys/param.h if it already has been.  */
+#if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
+# include <sys/param.h>
+#endif
+
+#if !defined PATH_MAX && defined MAXPATHLEN
+# define PATH_MAX MAXPATHLEN
+#endif
+
+#ifndef PATH_MAX
+# define PATH_MAX _POSIX_PATH_MAX
+#endif
+
+/* Pathname support.
+   ISSLASH(C)           tests whether C is a directory separator character.
+   IS_ABSOLUTE_PATH(P)  tests whether P is an absolute path.  If it is not,
+                        it may be concatenated to a directory pathname.
+   IS_PATH_WITH_DIR(P)  tests whether P contains a directory specification.
+ */
+#if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
+  /* Win32, OS/2, DOS */
+# define ISSLASH(C) ((C) == '/' || (C) == '\\')
+# define HAS_DEVICE(P) \
+    ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
+     && (P)[1] == ':')
+# define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P))
+# define IS_PATH_WITH_DIR(P) \
+    (strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P))
+#else
+  /* Unix */
+# define ISSLASH(C) ((C) == '/')
+# define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0])
+# define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL)
+#endif
+
+/* This is the type used for the search tree where known translations
+   are stored.  */
+struct known_translation_t
+{
+  /* Domain in which to search.  */
+  char *domainname;
+
+  /* The category.  */
+  int category;
+
+  /* State of the catalog counter at the point the string was found.  */
+  int counter;
+
+  /* Catalog where the string was found.  */
+  struct loaded_l10nfile *domain;
+
+  /* And finally the translation.  */
+  const char *translation;
+  size_t translation_length;
+
+  /* Pointer to the string in question.  */
+  char msgid[ZERO];
+};
+
+/* Root of the search tree with known translations.  We can use this
+   only if the system provides the `tsearch' function family.  */
+#if defined HAVE_TSEARCH || defined _LIBC
+# include <search.h>
+
+static void *root;
+
+# ifdef _LIBC
+#  define tsearch __tsearch
+# endif
+
+/* Function to compare two entries in the table of known translations.  */
+static int transcmp PARAMS ((const void *p1, const void *p2));
+static int
+transcmp (p1, p2)
+     const void *p1;
+     const void *p2;
+{
+  const struct known_translation_t *s1;
+  const struct known_translation_t *s2;
+  int result;
+
+  s1 = (const struct known_translation_t *) p1;
+  s2 = (const struct known_translation_t *) p2;
+
+  result = strcmp (s1->msgid, s2->msgid);
+  if (result == 0)
+    {
+      result = strcmp (s1->domainname, s2->domainname);
+      if (result == 0)
+	/* We compare the category last (though this is the cheapest
+	   operation) since it is hopefully always the same (namely
+	   LC_MESSAGES).  */
+	result = s1->category - s2->category;
+    }
+
+  return result;
+}
+#endif
+
+/* Name of the default domain used for gettext(3) prior any call to
+   textdomain(3).  The default value for this is "messages".  */
+const char _nl_default_default_domain[] = "messages";
+
+/* Value used as the default domain for gettext(3).  */
+const char *_nl_current_default_domain = _nl_default_default_domain;
+
+/* Contains the default location of the message catalogs.  */
+#if defined __EMX__
+extern const char _nl_default_dirname[];
+#else
+const char _nl_default_dirname[] = LOCALEDIR;
+#endif
+
+/* List with bindings of specific domains created by bindtextdomain()
+   calls.  */
+struct binding *_nl_domain_bindings;
+
+/* Prototypes for local functions.  */
+static char *plural_lookup PARAMS ((struct loaded_l10nfile *domain,
+				    unsigned long int n,
+				    const char *translation,
+				    size_t translation_len))
+     internal_function;
+static const char *category_to_name PARAMS ((int category)) internal_function;
+static const char *guess_category_value PARAMS ((int category,
+						 const char *categoryname))
+     internal_function;
+
+
+/* For those loosing systems which don't have `alloca' we have to add
+   some additional code emulating it.  */
+#ifdef HAVE_ALLOCA
+/* Nothing has to be done.  */
+# define ADD_BLOCK(list, address) /* nothing */
+# define FREE_BLOCKS(list) /* nothing */
+#else
+struct block_list
+{
+  void *address;
+  struct block_list *next;
+};
+# define ADD_BLOCK(list, addr)						      \
+  do {									      \
+    struct block_list *newp = (struct block_list *) malloc (sizeof (*newp));  \
+    /* If we cannot get a free block we cannot add the new element to	      \
+       the list.  */							      \
+    if (newp != NULL) {							      \
+      newp->address = (addr);						      \
+      newp->next = (list);						      \
+      (list) = newp;							      \
+    }									      \
+  } while (0)
+# define FREE_BLOCKS(list)						      \
+  do {									      \
+    while (list != NULL) {						      \
+      struct block_list *old = list;					      \
+      list = list->next;						      \
+      free (old);							      \
+    }									      \
+  } while (0)
+# undef alloca
+# define alloca(size) (malloc (size))
+#endif	/* have alloca */
+
+
+#ifdef _LIBC
+/* List of blocks allocated for translations.  */
+typedef struct transmem_list
+{
+  struct transmem_list *next;
+  char data[ZERO];
+} transmem_block_t;
+static struct transmem_list *transmem_list;
+#else
+typedef unsigned char transmem_block_t;
+#endif
+
+
+/* Names for the libintl functions are a problem.  They must not clash
+   with existing names and they should follow ANSI C.  But this source
+   code is also used in GNU C Library where the names have a __
+   prefix.  So we have to make a difference here.  */
+#ifdef _LIBC
+# define DCIGETTEXT __dcigettext
+#else
+# define DCIGETTEXT dcigettext__
+#endif
+
+/* Lock variable to protect the global data in the gettext implementation.  */
+#ifdef _LIBC
+__libc_rwlock_define_initialized (, _nl_state_lock)
+#endif
+
+/* Checking whether the binaries runs SUID must be done and glibc provides
+   easier methods therefore we make a difference here.  */
+#ifdef _LIBC
+# define ENABLE_SECURE __libc_enable_secure
+# define DETERMINE_SECURE
+#else
+# ifndef HAVE_GETUID
+#  define getuid() 0
+# endif
+# ifndef HAVE_GETGID
+#  define getgid() 0
+# endif
+# ifndef HAVE_GETEUID
+#  define geteuid() getuid()
+# endif
+# ifndef HAVE_GETEGID
+#  define getegid() getgid()
+# endif
+static int enable_secure;
+# define ENABLE_SECURE (enable_secure == 1)
+# define DETERMINE_SECURE \
+  if (enable_secure == 0)						      \
+    {									      \
+      if (getuid () != geteuid () || getgid () != getegid ())		      \
+	enable_secure = 1;						      \
+      else								      \
+	enable_secure = -1;						      \
+    }
+#endif
+
+/* Get the function to evaluate the plural expression.  */
+#include "eval-plural.h"
+
+/* Look up MSGID in the DOMAINNAME message catalog for the current
+   CATEGORY locale and, if PLURAL is nonzero, search over string
+   depending on the plural form determined by N.  */
+char *
+DCIGETTEXT (domainname, msgid1, msgid2, plural, n, category)
+     const char *domainname;
+     const char *msgid1;
+     const char *msgid2;
+     int plural;
+     unsigned long int n;
+     int category;
+{
+#ifndef HAVE_ALLOCA
+  struct block_list *block_list = NULL;
+#endif
+  struct loaded_l10nfile *domain;
+  struct binding *binding;
+  const char *categoryname;
+  const char *categoryvalue;
+  char *dirname, *xdomainname;
+  char *single_locale;
+  char *retval;
+  size_t retlen;
+  int saved_errno;
+#if defined HAVE_TSEARCH || defined _LIBC
+  struct known_translation_t *search;
+  struct known_translation_t **foundp = NULL;
+  size_t msgid_len;
+#endif
+  size_t domainname_len;
+
+  /* If no real MSGID is given return NULL.  */
+  if (msgid1 == NULL)
+    return NULL;
+
+  __libc_rwlock_rdlock (_nl_state_lock);
+
+  /* If DOMAINNAME is NULL, we are interested in the default domain.  If
+     CATEGORY is not LC_MESSAGES this might not make much sense but the
+     definition left this undefined.  */
+  if (domainname == NULL)
+    domainname = _nl_current_default_domain;
+
+  /* OS/2 specific: backward compatibility with older libintl versions  */
+#ifdef LC_MESSAGES_COMPAT
+  if (category == LC_MESSAGES_COMPAT)
+    category = LC_MESSAGES;
+#endif
+
+#if defined HAVE_TSEARCH || defined _LIBC
+  msgid_len = strlen (msgid1) + 1;
+
+  /* Try to find the translation among those which we found at
+     some time.  */
+  search = (struct known_translation_t *)
+	   alloca (offsetof (struct known_translation_t, msgid) + msgid_len);
+  memcpy (search->msgid, msgid1, msgid_len);
+  search->domainname = (char *) domainname;
+  search->category = category;
+
+  foundp = (struct known_translation_t **) tfind (search, &root, transcmp);
+  if (foundp != NULL && (*foundp)->counter == _nl_msg_cat_cntr)
+    {
+      /* Now deal with plural.  */
+      if (plural)
+	retval = plural_lookup ((*foundp)->domain, n, (*foundp)->translation,
+				(*foundp)->translation_length);
+      else
+	retval = (char *) (*foundp)->translation;
+
+      __libc_rwlock_unlock (_nl_state_lock);
+      return retval;
+    }
+#endif
+
+  /* Preserve the `errno' value.  */
+  saved_errno = errno;
+
+  /* See whether this is a SUID binary or not.  */
+  DETERMINE_SECURE;
+
+  /* First find matching binding.  */
+  for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next)
+    {
+      int compare = strcmp (domainname, binding->domainname);
+      if (compare == 0)
+	/* We found it!  */
+	break;
+      if (compare < 0)
+	{
+	  /* It is not in the list.  */
+	  binding = NULL;
+	  break;
+	}
+    }
+
+  if (binding == NULL)
+    dirname = (char *) _nl_default_dirname;
+  else if (IS_ABSOLUTE_PATH (binding->dirname))
+    dirname = binding->dirname;
+  else
+    {
+      /* We have a relative path.  Make it absolute now.  */
+      size_t dirname_len = strlen (binding->dirname) + 1;
+      size_t path_max;
+      char *ret;
+
+      path_max = (unsigned int) PATH_MAX;
+      path_max += 2;		/* The getcwd docs say to do this.  */
+
+      for (;;)
+	{
+	  dirname = (char *) alloca (path_max + dirname_len);
+	  ADD_BLOCK (block_list, dirname);
+
+	  __set_errno (0);
+	  ret = getcwd (dirname, path_max);
+	  if (ret != NULL || errno != ERANGE)
+	    break;
+
+	  path_max += path_max / 2;
+	  path_max += PATH_INCR;
+	}
+
+      if (ret == NULL)
+	{
+	  /* We cannot get the current working directory.  Don't signal an
+	     error but simply return the default string.  */
+	  FREE_BLOCKS (block_list);
+	  __libc_rwlock_unlock (_nl_state_lock);
+	  __set_errno (saved_errno);
+	  return (plural == 0
+		  ? (char *) msgid1
+		  /* Use the Germanic plural rule.  */
+		  : n == 1 ? (char *) msgid1 : (char *) msgid2);
+	}
+
+      stpcpy (stpcpy (strchr (dirname, '\0'), "/"), binding->dirname);
+    }
+
+  /* Now determine the symbolic name of CATEGORY and its value.  */
+  categoryname = category_to_name (category);
+  categoryvalue = guess_category_value (category, categoryname);
+
+  domainname_len = strlen (domainname);
+  xdomainname = (char *) alloca (strlen (categoryname)
+				 + domainname_len + 5);
+  ADD_BLOCK (block_list, xdomainname);
+
+  stpcpy (mempcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"),
+		  domainname, domainname_len),
+	  ".mo");
+
+  /* Creating working area.  */
+  single_locale = (char *) alloca (strlen (categoryvalue) + 1);
+  ADD_BLOCK (block_list, single_locale);
+
+
+  /* Search for the given string.  This is a loop because we perhaps
+     got an ordered list of languages to consider for the translation.  */
+  while (1)
+    {
+      /* Make CATEGORYVALUE point to the next element of the list.  */
+      while (categoryvalue[0] != '\0' && categoryvalue[0] == ':')
+	++categoryvalue;
+      if (categoryvalue[0] == '\0')
+	{
+	  /* The whole contents of CATEGORYVALUE has been searched but
+	     no valid entry has been found.  We solve this situation
+	     by implicitly appending a "C" entry, i.e. no translation
+	     will take place.  */
+	  single_locale[0] = 'C';
+	  single_locale[1] = '\0';
+	}
+      else
+	{
+	  char *cp = single_locale;
+	  while (categoryvalue[0] != '\0' && categoryvalue[0] != ':')
+	    *cp++ = *categoryvalue++;
+	  *cp = '\0';
+
+	  /* When this is a SUID binary we must not allow accessing files
+	     outside the dedicated directories.  */
+	  if (ENABLE_SECURE && IS_PATH_WITH_DIR (single_locale))
+	    /* Ingore this entry.  */
+	    continue;
+	}
+
+      /* If the current locale value is C (or POSIX) we don't load a
+	 domain.  Return the MSGID.  */
+      if (strcmp (single_locale, "C") == 0
+	  || strcmp (single_locale, "POSIX") == 0)
+	{
+	  FREE_BLOCKS (block_list);
+	  __libc_rwlock_unlock (_nl_state_lock);
+	  __set_errno (saved_errno);
+	  return (plural == 0
+		  ? (char *) msgid1
+		  /* Use the Germanic plural rule.  */
+		  : n == 1 ? (char *) msgid1 : (char *) msgid2);
+	}
+
+
+      /* Find structure describing the message catalog matching the
+	 DOMAINNAME and CATEGORY.  */
+      domain = _nl_find_domain (dirname, single_locale, xdomainname, binding);
+
+      if (domain != NULL)
+	{
+	  retval = _nl_find_msg (domain, binding, msgid1, &retlen);
+
+	  if (retval == NULL)
+	    {
+	      int cnt;
+
+	      for (cnt = 0; domain->successor[cnt] != NULL; ++cnt)
+		{
+		  retval = _nl_find_msg (domain->successor[cnt], binding,
+					 msgid1, &retlen);
+
+		  if (retval != NULL)
+		    {
+		      domain = domain->successor[cnt];
+		      break;
+		    }
+		}
+	    }
+
+	  if (retval != NULL)
+	    {
+	      /* Found the translation of MSGID1 in domain DOMAIN:
+		 starting at RETVAL, RETLEN bytes.  */
+	      FREE_BLOCKS (block_list);
+	      __set_errno (saved_errno);
+#if defined HAVE_TSEARCH || defined _LIBC
+	      if (foundp == NULL)
+		{
+		  /* Create a new entry and add it to the search tree.  */
+		  struct known_translation_t *newp;
+
+		  newp = (struct known_translation_t *)
+		    malloc (offsetof (struct known_translation_t, msgid)
+			    + msgid_len + domainname_len + 1);
+		  if (newp != NULL)
+		    {
+		      newp->domainname =
+			mempcpy (newp->msgid, msgid1, msgid_len);
+		      memcpy (newp->domainname, domainname, domainname_len + 1);
+		      newp->category = category;
+		      newp->counter = _nl_msg_cat_cntr;
+		      newp->domain = domain;
+		      newp->translation = retval;
+		      newp->translation_length = retlen;
+
+		      /* Insert the entry in the search tree.  */
+		      foundp = (struct known_translation_t **)
+			tsearch (newp, &root, transcmp);
+		      if (foundp == NULL
+			  || __builtin_expect (*foundp != newp, 0))
+			/* The insert failed.  */
+			free (newp);
+		    }
+		}
+	      else
+		{
+		  /* We can update the existing entry.  */
+		  (*foundp)->counter = _nl_msg_cat_cntr;
+		  (*foundp)->domain = domain;
+		  (*foundp)->translation = retval;
+		  (*foundp)->translation_length = retlen;
+		}
+#endif
+	      /* Now deal with plural.  */
+	      if (plural)
+		retval = plural_lookup (domain, n, retval, retlen);
+
+	      __libc_rwlock_unlock (_nl_state_lock);
+	      return retval;
+	    }
+	}
+    }
+  /* NOTREACHED */
+}
+
+
+char *
+internal_function
+_nl_find_msg (domain_file, domainbinding, msgid, lengthp)
+     struct loaded_l10nfile *domain_file;
+     struct binding *domainbinding;
+     const char *msgid;
+     size_t *lengthp;
+{
+  struct loaded_domain *domain;
+  size_t act;
+  char *result;
+  size_t resultlen;
+
+  if (domain_file->decided == 0)
+    _nl_load_domain (domain_file, domainbinding);
+
+  if (domain_file->data == NULL)
+    return NULL;
+
+  domain = (struct loaded_domain *) domain_file->data;
+
+  /* Locate the MSGID and its translation.  */
+  if (domain->hash_size > 2 && domain->hash_tab != NULL)
+    {
+      /* Use the hashing table.  */
+      nls_uint32 len = strlen (msgid);
+      nls_uint32 hash_val = hash_string (msgid);
+      nls_uint32 idx = hash_val % domain->hash_size;
+      nls_uint32 incr = 1 + (hash_val % (domain->hash_size - 2));
+
+      while (1)
+	{
+	  nls_uint32 nstr = W (domain->must_swap, domain->hash_tab[idx]);
+
+	  if (nstr == 0)
+	    /* Hash table entry is empty.  */
+	    return NULL;
+
+	  /* Compare msgid with the original string at index nstr-1.
+	     We compare the lengths with >=, not ==, because plural entries
+	     are represented by strings with an embedded NUL.  */
+	  if (W (domain->must_swap, domain->orig_tab[nstr - 1].length) >= len
+	      && (strcmp (msgid,
+			  domain->data + W (domain->must_swap,
+					    domain->orig_tab[nstr - 1].offset))
+		  == 0))
+	    {
+	      act = nstr - 1;
+	      goto found;
+	    }
+
+	  if (idx >= domain->hash_size - incr)
+	    idx -= domain->hash_size - incr;
+	  else
+	    idx += incr;
+	}
+      /* NOTREACHED */
+    }
+  else
+    {
+      /* Try the default method:  binary search in the sorted array of
+	 messages.  */
+      size_t top, bottom;
+
+      bottom = 0;
+      top = domain->nstrings;
+      while (bottom < top)
+	{
+	  int cmp_val;
+
+	  act = (bottom + top) / 2;
+	  cmp_val = strcmp (msgid, (domain->data
+				    + W (domain->must_swap,
+					 domain->orig_tab[act].offset)));
+	  if (cmp_val < 0)
+	    top = act;
+	  else if (cmp_val > 0)
+	    bottom = act + 1;
+	  else
+	    goto found;
+	}
+      /* No translation was found.  */
+      return NULL;
+    }
+
+ found:
+  /* The translation was found at index ACT.  If we have to convert the
+     string to use a different character set, this is the time.  */
+  result = ((char *) domain->data
+	    + W (domain->must_swap, domain->trans_tab[act].offset));
+  resultlen = W (domain->must_swap, domain->trans_tab[act].length) + 1;
+
+#if defined _LIBC || HAVE_ICONV
+  if (domain->codeset_cntr
+      != (domainbinding != NULL ? domainbinding->codeset_cntr : 0))
+    {
+      /* The domain's codeset has changed through bind_textdomain_codeset()
+	 since the message catalog was initialized or last accessed.  We
+	 have to reinitialize the converter.  */
+      _nl_free_domain_conv (domain);
+      _nl_init_domain_conv (domain_file, domain, domainbinding);
+    }
+
+  if (
+# ifdef _LIBC
+      domain->conv != (__gconv_t) -1
+# else
+#  if HAVE_ICONV
+      domain->conv != (iconv_t) -1
+#  endif
+# endif
+      )
+    {
+      /* We are supposed to do a conversion.  First allocate an
+	 appropriate table with the same structure as the table
+	 of translations in the file, where we can put the pointers
+	 to the converted strings in.
+	 There is a slight complication with plural entries.  They
+	 are represented by consecutive NUL terminated strings.  We
+	 handle this case by converting RESULTLEN bytes, including
+	 NULs.  */
+
+      if (domain->conv_tab == NULL
+	  && ((domain->conv_tab = (char **) calloc (domain->nstrings,
+						    sizeof (char *)))
+	      == NULL))
+	/* Mark that we didn't succeed allocating a table.  */
+	domain->conv_tab = (char **) -1;
+
+      if (__builtin_expect (domain->conv_tab == (char **) -1, 0))
+	/* Nothing we can do, no more memory.  */
+	goto converted;
+
+      if (domain->conv_tab[act] == NULL)
+	{
+	  /* We haven't used this string so far, so it is not
+	     translated yet.  Do this now.  */
+	  /* We use a bit more efficient memory handling.
+	     We allocate always larger blocks which get used over
+	     time.  This is faster than many small allocations.   */
+	  __libc_lock_define_initialized (static, lock)
+# define INITIAL_BLOCK_SIZE	4080
+	  static unsigned char *freemem;
+	  static size_t freemem_size;
+
+	  const unsigned char *inbuf;
+	  unsigned char *outbuf;
+	  int malloc_count;
+# ifndef _LIBC
+	  transmem_block_t *transmem_list = NULL;
+# endif
+
+	  __libc_lock_lock (lock);
+
+	  inbuf = (const unsigned char *) result;
+	  outbuf = freemem + sizeof (size_t);
+
+	  malloc_count = 0;
+	  while (1)
+	    {
+	      transmem_block_t *newmem;
+# ifdef _LIBC
+	      size_t non_reversible;
+	      int res;
+
+	      if (freemem_size < sizeof (size_t))
+		goto resize_freemem;
+
+	      res = __gconv (domain->conv,
+			     &inbuf, inbuf + resultlen,
+			     &outbuf,
+			     outbuf + freemem_size - sizeof (size_t),
+			     &non_reversible);
+
+	      if (res == __GCONV_OK || res == __GCONV_EMPTY_INPUT)
+		break;
+
+	      if (res != __GCONV_FULL_OUTPUT)
+		{
+		  __libc_lock_unlock (lock);
+		  goto converted;
+		}
+
+	      inbuf = result;
+# else
+#  if HAVE_ICONV
+	      const char *inptr = (const char *) inbuf;
+	      size_t inleft = resultlen;
+	      char *outptr = (char *) outbuf;
+	      size_t outleft;
+
+	      if (freemem_size < sizeof (size_t))
+		goto resize_freemem;
+
+	      outleft = freemem_size - sizeof (size_t);
+	      if (iconv (domain->conv,
+			 (ICONV_CONST char **) &inptr, &inleft,
+			 &outptr, &outleft)
+		  != (size_t) (-1))
+		{
+		  outbuf = (unsigned char *) outptr;
+		  break;
+		}
+	      if (errno != E2BIG)
+		{
+		  __libc_lock_unlock (lock);
+		  goto converted;
+		}
+#  endif
+# endif
+
+	    resize_freemem:
+	      /* We must allocate a new buffer or resize the old one.  */
+	      if (malloc_count > 0)
+		{
+		  ++malloc_count;
+		  freemem_size = malloc_count * INITIAL_BLOCK_SIZE;
+		  newmem = (transmem_block_t *) realloc (transmem_list,
+							 freemem_size);
+# ifdef _LIBC
+		  if (newmem != NULL)
+		    transmem_list = transmem_list->next;
+		  else
+		    {
+		      struct transmem_list *old = transmem_list;
+
+		      transmem_list = transmem_list->next;
+		      free (old);
+		    }
+# endif
+		}
+	      else
+		{
+		  malloc_count = 1;
+		  freemem_size = INITIAL_BLOCK_SIZE;
+		  newmem = (transmem_block_t *) malloc (freemem_size);
+		}
+	      if (__builtin_expect (newmem == NULL, 0))
+		{
+		  freemem = NULL;
+		  freemem_size = 0;
+		  __libc_lock_unlock (lock);
+		  goto converted;
+		}
+
+# ifdef _LIBC
+	      /* Add the block to the list of blocks we have to free
+                 at some point.  */
+	      newmem->next = transmem_list;
+	      transmem_list = newmem;
+
+	      freemem = newmem->data;
+	      freemem_size -= offsetof (struct transmem_list, data);
+# else
+	      transmem_list = newmem;
+	      freemem = newmem;
+# endif
+
+	      outbuf = freemem + sizeof (size_t);
+	    }
+
+	  /* We have now in our buffer a converted string.  Put this
+	     into the table of conversions.  */
+	  *(size_t *) freemem = outbuf - freemem - sizeof (size_t);
+	  domain->conv_tab[act] = (char *) freemem;
+	  /* Shrink freemem, but keep it aligned.  */
+	  freemem_size -= outbuf - freemem;
+	  freemem = outbuf;
+	  freemem += freemem_size & (alignof (size_t) - 1);
+	  freemem_size = freemem_size & ~ (alignof (size_t) - 1);
+
+	  __libc_lock_unlock (lock);
+	}
+
+      /* Now domain->conv_tab[act] contains the translation of all
+	 the plural variants.  */
+      result = domain->conv_tab[act] + sizeof (size_t);
+      resultlen = *(size_t *) domain->conv_tab[act];
+    }
+
+ converted:
+  /* The result string is converted.  */
+
+#endif /* _LIBC || HAVE_ICONV */
+
+  *lengthp = resultlen;
+  return result;
+}
+
+
+/* Look up a plural variant.  */
+static char *
+internal_function
+plural_lookup (domain, n, translation, translation_len)
+     struct loaded_l10nfile *domain;
+     unsigned long int n;
+     const char *translation;
+     size_t translation_len;
+{
+  struct loaded_domain *domaindata = (struct loaded_domain *) domain->data;
+  unsigned long int index;
+  const char *p;
+
+  index = plural_eval (domaindata->plural, n);
+  if (index >= domaindata->nplurals)
+    /* This should never happen.  It means the plural expression and the
+       given maximum value do not match.  */
+    index = 0;
+
+  /* Skip INDEX strings at TRANSLATION.  */
+  p = translation;
+  while (index-- > 0)
+    {
+#ifdef _LIBC
+      p = __rawmemchr (p, '\0');
+#else
+      p = strchr (p, '\0');
+#endif
+      /* And skip over the NUL byte.  */
+      p++;
+
+      if (p >= translation + translation_len)
+	/* This should never happen.  It means the plural expression
+	   evaluated to a value larger than the number of variants
+	   available for MSGID1.  */
+	return (char *) translation;
+    }
+  return (char *) p;
+}
+
+
+/* Return string representation of locale CATEGORY.  */
+static const char *
+internal_function
+category_to_name (category)
+     int category;
+{
+  const char *retval;
+
+  switch (category)
+  {
+#ifdef LC_COLLATE
+  case LC_COLLATE:
+    retval = "LC_COLLATE";
+    break;
+#endif
+#ifdef LC_CTYPE
+  case LC_CTYPE:
+    retval = "LC_CTYPE";
+    break;
+#endif
+#ifdef LC_MONETARY
+  case LC_MONETARY:
+    retval = "LC_MONETARY";
+    break;
+#endif
+#ifdef LC_NUMERIC
+  case LC_NUMERIC:
+    retval = "LC_NUMERIC";
+    break;
+#endif
+#ifdef LC_TIME
+  case LC_TIME:
+    retval = "LC_TIME";
+    break;
+#endif
+#ifdef LC_MESSAGES
+  case LC_MESSAGES:
+    retval = "LC_MESSAGES";
+    break;
+#endif
+#ifdef LC_RESPONSE
+  case LC_RESPONSE:
+    retval = "LC_RESPONSE";
+    break;
+#endif
+#ifdef LC_ALL
+  case LC_ALL:
+    /* This might not make sense but is perhaps better than any other
+       value.  */
+    retval = "LC_ALL";
+    break;
+#endif
+  default:
+    /* If you have a better idea for a default value let me know.  */
+    retval = "LC_XXX";
+  }
+
+  return retval;
+}
+
+/* Guess value of current locale from value of the environment variables.  */
+static const char *
+internal_function
+guess_category_value (category, categoryname)
+     int category;
+     const char *categoryname;
+{
+  const char *language;
+  const char *retval;
+
+  /* The highest priority value is the `LANGUAGE' environment
+     variable.  But we don't use the value if the currently selected
+     locale is the C locale.  This is a GNU extension.  */
+  language = getenv ("LANGUAGE");
+  if (language != NULL && language[0] == '\0')
+    language = NULL;
+
+  /* We have to proceed with the POSIX methods of looking to `LC_ALL',
+     `LC_xxx', and `LANG'.  On some systems this can be done by the
+     `setlocale' function itself.  */
+#ifdef _LIBC
+  retval = setlocale (category, NULL);
+#else
+  retval = _nl_locale_name (category, categoryname);
+#endif
+
+  /* Ignore LANGUAGE if the locale is set to "C" because
+     1. "C" locale usually uses the ASCII encoding, and most international
+	messages use non-ASCII characters. These characters get displayed
+	as question marks (if using glibc's iconv()) or as invalid 8-bit
+	characters (because other iconv()s refuse to convert most non-ASCII
+	characters to ASCII). In any case, the output is ugly.
+     2. The precise output of some programs in the "C" locale is specified
+	by POSIX and should not depend on environment variables like
+	"LANGUAGE".  We allow such programs to use gettext().  */
+  return language != NULL && strcmp (retval, "C") != 0 ? language : retval;
+}
+
+/* @@ begin of epilog @@ */
+
+/* We don't want libintl.a to depend on any other library.  So we
+   avoid the non-standard function stpcpy.  In GNU C Library this
+   function is available, though.  Also allow the symbol HAVE_STPCPY
+   to be defined.  */
+#if !_LIBC && !HAVE_STPCPY
+static char *
+stpcpy (dest, src)
+     char *dest;
+     const char *src;
+{
+  while ((*dest++ = *src++) != '\0')
+    /* Do nothing. */ ;
+  return dest - 1;
+}
+#endif
+
+#if !_LIBC && !HAVE_MEMPCPY
+static void *
+mempcpy (dest, src, n)
+     void *dest;
+     const void *src;
+     size_t n;
+{
+  return (void *) ((char *) memcpy (dest, src, n) + n);
+}
+#endif
+
+
+#ifdef _LIBC
+/* If we want to free all resources we have to do some work at
+   program's end.  */
+static void __attribute__ ((unused))
+free_mem (void)
+{
+  void *old;
+
+  while (_nl_domain_bindings != NULL)
+    {
+      struct binding *oldp = _nl_domain_bindings;
+      _nl_domain_bindings = _nl_domain_bindings->next;
+      if (oldp->dirname != _nl_default_dirname)
+	/* Yes, this is a pointer comparison.  */
+	free (oldp->dirname);
+      free (oldp->codeset);
+      free (oldp);
+    }
+
+  if (_nl_current_default_domain != _nl_default_default_domain)
+    /* Yes, again a pointer comparison.  */
+    free ((char *) _nl_current_default_domain);
+
+  /* Remove the search tree with the known translations.  */
+  __tdestroy (root, free);
+  root = NULL;
+
+  while (transmem_list != NULL)
+    {
+      old = transmem_list;
+      transmem_list = transmem_list->next;
+      free (old);
+    }
+}
+
+text_set_element (__libc_subfreeres, free_mem);
+#endif
diff --git a/src/sed/intl/dcngettext.c b/src/sed/intl/dcngettext.c
new file mode 100644
index 0000000..9b05358
--- /dev/null
+++ b/src/sed/intl/dcngettext.c
@@ -0,0 +1,60 @@
+/* Implementation of the dcngettext(3) function.
+   Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "gettextP.h"
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgnuintl.h"
+#endif
+
+/* @@ end of prolog @@ */
+
+/* Names for the libintl functions are a problem.  They must not clash
+   with existing names and they should follow ANSI C.  But this source
+   code is also used in GNU C Library where the names have a __
+   prefix.  So we have to make a difference here.  */
+#ifdef _LIBC
+# define DCNGETTEXT __dcngettext
+# define DCIGETTEXT __dcigettext
+#else
+# define DCNGETTEXT dcngettext__
+# define DCIGETTEXT dcigettext__
+#endif
+
+/* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY
+   locale.  */
+char *
+DCNGETTEXT (domainname, msgid1, msgid2, n, category)
+     const char *domainname;
+     const char *msgid1;
+     const char *msgid2;
+     unsigned long int n;
+     int category;
+{
+  return DCIGETTEXT (domainname, msgid1, msgid2, 1, n, category);
+}
+
+#ifdef _LIBC
+/* Alias for function name in GNU C Library.  */
+weak_alias (__dcngettext, dcngettext);
+#endif
diff --git a/src/sed/intl/dgettext.c b/src/sed/intl/dgettext.c
new file mode 100644
index 0000000..d4ec011
--- /dev/null
+++ b/src/sed/intl/dgettext.c
@@ -0,0 +1,59 @@
+/* Implementation of the dgettext(3) function.
+   Copyright (C) 1995-1997, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <locale.h>
+
+#include "gettextP.h"
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgnuintl.h"
+#endif
+
+/* @@ end of prolog @@ */
+
+/* Names for the libintl functions are a problem.  They must not clash
+   with existing names and they should follow ANSI C.  But this source
+   code is also used in GNU C Library where the names have a __
+   prefix.  So we have to make a difference here.  */
+#ifdef _LIBC
+# define DGETTEXT __dgettext
+# define DCGETTEXT __dcgettext
+#else
+# define DGETTEXT dgettext__
+# define DCGETTEXT dcgettext__
+#endif
+
+/* Look up MSGID in the DOMAINNAME message catalog of the current
+   LC_MESSAGES locale.  */
+char *
+DGETTEXT (domainname, msgid)
+     const char *domainname;
+     const char *msgid;
+{
+  return DCGETTEXT (domainname, msgid, LC_MESSAGES);
+}
+
+#ifdef _LIBC
+/* Alias for function name in GNU C Library.  */
+weak_alias (__dgettext, dgettext);
+#endif
diff --git a/src/sed/intl/dngettext.c b/src/sed/intl/dngettext.c
new file mode 100644
index 0000000..f47a8ce
--- /dev/null
+++ b/src/sed/intl/dngettext.c
@@ -0,0 +1,61 @@
+/* Implementation of the dngettext(3) function.
+   Copyright (C) 1995-1997, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <locale.h>
+
+#include "gettextP.h"
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgnuintl.h"
+#endif
+
+/* @@ end of prolog @@ */
+
+/* Names for the libintl functions are a problem.  They must not clash
+   with existing names and they should follow ANSI C.  But this source
+   code is also used in GNU C Library where the names have a __
+   prefix.  So we have to make a difference here.  */
+#ifdef _LIBC
+# define DNGETTEXT __dngettext
+# define DCNGETTEXT __dcngettext
+#else
+# define DNGETTEXT dngettext__
+# define DCNGETTEXT dcngettext__
+#endif
+
+/* Look up MSGID in the DOMAINNAME message catalog of the current
+   LC_MESSAGES locale and skip message according to the plural form.  */
+char *
+DNGETTEXT (domainname, msgid1, msgid2, n)
+     const char *domainname;
+     const char *msgid1;
+     const char *msgid2;
+     unsigned long int n;
+{
+  return DCNGETTEXT (domainname, msgid1, msgid2, n, LC_MESSAGES);
+}
+
+#ifdef _LIBC
+/* Alias for function name in GNU C Library.  */
+weak_alias (__dngettext, dngettext);
+#endif
diff --git a/src/sed/intl/eval-plural.h b/src/sed/intl/eval-plural.h
new file mode 100644
index 0000000..fdf5501
--- /dev/null
+++ b/src/sed/intl/eval-plural.h
@@ -0,0 +1,105 @@
+/* Plural expression evaluation.
+   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifndef STATIC
+#define STATIC static
+#endif
+
+/* Evaluate the plural expression and return an index value.  */
+STATIC unsigned long int plural_eval PARAMS ((struct expression *pexp,
+					      unsigned long int n))
+     internal_function;
+
+STATIC
+unsigned long int
+internal_function
+plural_eval (pexp, n)
+     struct expression *pexp;
+     unsigned long int n;
+{
+  switch (pexp->nargs)
+    {
+    case 0:
+      switch (pexp->operation)
+	{
+	case var:
+	  return n;
+	case num:
+	  return pexp->val.num;
+	default:
+	  break;
+	}
+      /* NOTREACHED */
+      break;
+    case 1:
+      {
+	/* pexp->operation must be lnot.  */
+	unsigned long int arg = plural_eval (pexp->val.args[0], n);
+	return ! arg;
+      }
+    case 2:
+      {
+	unsigned long int leftarg = plural_eval (pexp->val.args[0], n);
+	if (pexp->operation == lor)
+	  return leftarg || plural_eval (pexp->val.args[1], n);
+	else if (pexp->operation == land)
+	  return leftarg && plural_eval (pexp->val.args[1], n);
+	else
+	  {
+	    unsigned long int rightarg = plural_eval (pexp->val.args[1], n);
+
+	    switch (pexp->operation)
+	      {
+	      case mult:
+		return leftarg * rightarg;
+	      case divide:
+		return leftarg / rightarg;
+	      case module:
+		return leftarg % rightarg;
+	      case plus:
+		return leftarg + rightarg;
+	      case minus:
+		return leftarg - rightarg;
+	      case less_than:
+		return leftarg < rightarg;
+	      case greater_than:
+		return leftarg > rightarg;
+	      case less_or_equal:
+		return leftarg <= rightarg;
+	      case greater_or_equal:
+		return leftarg >= rightarg;
+	      case equal:
+		return leftarg == rightarg;
+	      case not_equal:
+		return leftarg != rightarg;
+	      default:
+		break;
+	      }
+	  }
+	/* NOTREACHED */
+	break;
+      }
+    case 3:
+      {
+	/* pexp->operation must be qmop.  */
+	unsigned long int boolarg = plural_eval (pexp->val.args[0], n);
+	return plural_eval (pexp->val.args[boolarg ? 1 : 2], n);
+      }
+    }
+  /* NOTREACHED */
+  return 0;
+}
diff --git a/src/sed/intl/explodename.c b/src/sed/intl/explodename.c
new file mode 100644
index 0000000..c47ef63
--- /dev/null
+++ b/src/sed/intl/explodename.c
@@ -0,0 +1,192 @@
+/* Copyright (C) 1995-1998, 2000, 2001 Free Software Foundation, Inc.
+   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "loadinfo.h"
+
+/* On some strange systems still no definition of NULL is found.  Sigh!  */
+#ifndef NULL
+# if defined __STDC__ && __STDC__
+#  define NULL ((void *) 0)
+# else
+#  define NULL 0
+# endif
+#endif
+
+/* @@ end of prolog @@ */
+
+char *
+_nl_find_language (name)
+     const char *name;
+{
+  while (name[0] != '\0' && name[0] != '_' && name[0] != '@'
+	 && name[0] != '+' && name[0] != ',')
+    ++name;
+
+  return (char *) name;
+}
+
+
+int
+_nl_explode_name (name, language, modifier, territory, codeset,
+		  normalized_codeset, special, sponsor, revision)
+     char *name;
+     const char **language;
+     const char **modifier;
+     const char **territory;
+     const char **codeset;
+     const char **normalized_codeset;
+     const char **special;
+     const char **sponsor;
+     const char **revision;
+{
+  enum { undecided, xpg, cen } syntax;
+  char *cp;
+  int mask;
+
+  *modifier = NULL;
+  *territory = NULL;
+  *codeset = NULL;
+  *normalized_codeset = NULL;
+  *special = NULL;
+  *sponsor = NULL;
+  *revision = NULL;
+
+  /* Now we determine the single parts of the locale name.  First
+     look for the language.  Termination symbols are `_' and `@' if
+     we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
+  mask = 0;
+  syntax = undecided;
+  *language = cp = name;
+  cp = _nl_find_language (*language);
+
+  if (*language == cp)
+    /* This does not make sense: language has to be specified.  Use
+       this entry as it is without exploding.  Perhaps it is an alias.  */
+    cp = strchr (*language, '\0');
+  else if (cp[0] == '_')
+    {
+      /* Next is the territory.  */
+      cp[0] = '\0';
+      *territory = ++cp;
+
+      while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
+	     && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
+	++cp;
+
+      mask |= TERRITORY;
+
+      if (cp[0] == '.')
+	{
+	  /* Next is the codeset.  */
+	  syntax = xpg;
+	  cp[0] = '\0';
+	  *codeset = ++cp;
+
+	  while (cp[0] != '\0' && cp[0] != '@')
+	    ++cp;
+
+	  mask |= XPG_CODESET;
+
+	  if (*codeset != cp && (*codeset)[0] != '\0')
+	    {
+	      *normalized_codeset = _nl_normalize_codeset (*codeset,
+							   cp - *codeset);
+	      if (strcmp (*codeset, *normalized_codeset) == 0)
+		free ((char *) *normalized_codeset);
+	      else
+		mask |= XPG_NORM_CODESET;
+	    }
+	}
+    }
+
+  if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
+    {
+      /* Next is the modifier.  */
+      syntax = cp[0] == '@' ? xpg : cen;
+      cp[0] = '\0';
+      *modifier = ++cp;
+
+      while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
+	     && cp[0] != ',' && cp[0] != '_')
+	++cp;
+
+      mask |= XPG_MODIFIER | CEN_AUDIENCE;
+    }
+
+  if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
+    {
+      syntax = cen;
+
+      if (cp[0] == '+')
+	{
+ 	  /* Next is special application (CEN syntax).  */
+	  cp[0] = '\0';
+	  *special = ++cp;
+
+	  while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
+	    ++cp;
+
+	  mask |= CEN_SPECIAL;
+	}
+
+      if (cp[0] == ',')
+	{
+ 	  /* Next is sponsor (CEN syntax).  */
+	  cp[0] = '\0';
+	  *sponsor = ++cp;
+
+	  while (cp[0] != '\0' && cp[0] != '_')
+	    ++cp;
+
+	  mask |= CEN_SPONSOR;
+	}
+
+      if (cp[0] == '_')
+	{
+ 	  /* Next is revision (CEN syntax).  */
+	  cp[0] = '\0';
+	  *revision = ++cp;
+
+	  mask |= CEN_REVISION;
+	}
+    }
+
+  /* For CEN syntax values it might be important to have the
+     separator character in the file name, not for XPG syntax.  */
+  if (syntax == xpg)
+    {
+      if (*territory != NULL && (*territory)[0] == '\0')
+	mask &= ~TERRITORY;
+
+      if (*codeset != NULL && (*codeset)[0] == '\0')
+	mask &= ~XPG_CODESET;
+
+      if (*modifier != NULL && (*modifier)[0] == '\0')
+	mask &= ~XPG_MODIFIER;
+    }
+
+  return mask;
+}
diff --git a/src/sed/intl/finddomain.c b/src/sed/intl/finddomain.c
new file mode 100644
index 0000000..48a651d
--- /dev/null
+++ b/src/sed/intl/finddomain.c
@@ -0,0 +1,198 @@
+/* Handle list of needed message catalogs
+   Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
+   Written by Ulrich Drepper <drepper@gnu.org>, 1995.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if defined HAVE_UNISTD_H || defined _LIBC
+# include <unistd.h>
+#endif
+
+#include "gettextP.h"
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgnuintl.h"
+#endif
+
+/* @@ end of prolog @@ */
+/* List of already loaded domains.  */
+static struct loaded_l10nfile *_nl_loaded_domains;
+
+
+/* Return a data structure describing the message catalog described by
+   the DOMAINNAME and CATEGORY parameters with respect to the currently
+   established bindings.  */
+struct loaded_l10nfile *
+internal_function
+_nl_find_domain (dirname, locale, domainname, domainbinding)
+     const char *dirname;
+     char *locale;
+     const char *domainname;
+     struct binding *domainbinding;
+{
+  struct loaded_l10nfile *retval;
+  const char *language;
+  const char *modifier;
+  const char *territory;
+  const char *codeset;
+  const char *normalized_codeset;
+  const char *special;
+  const char *sponsor;
+  const char *revision;
+  const char *alias_value;
+  int mask;
+
+  /* LOCALE can consist of up to four recognized parts for the XPG syntax:
+
+		language[_territory[.codeset]][@modifier]
+
+     and six parts for the CEN syntax:
+
+	language[_territory][+audience][+special][,[sponsor][_revision]]
+
+     Beside the first part all of them are allowed to be missing.  If
+     the full specified locale is not found, the less specific one are
+     looked for.  The various parts will be stripped off according to
+     the following order:
+		(1) revision
+		(2) sponsor
+		(3) special
+		(4) codeset
+		(5) normalized codeset
+		(6) territory
+		(7) audience/modifier
+   */
+
+  /* If we have already tested for this locale entry there has to
+     be one data set in the list of loaded domains.  */
+  retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname,
+			       strlen (dirname) + 1, 0, locale, NULL, NULL,
+			       NULL, NULL, NULL, NULL, NULL, domainname, 0);
+  if (retval != NULL)
+    {
+      /* We know something about this locale.  */
+      int cnt;
+
+      if (retval->decided == 0)
+	_nl_load_domain (retval, domainbinding);
+
+      if (retval->data != NULL)
+	return retval;
+
+      for (cnt = 0; retval->successor[cnt] != NULL; ++cnt)
+	{
+	  if (retval->successor[cnt]->decided == 0)
+	    _nl_load_domain (retval->successor[cnt], domainbinding);
+
+	  if (retval->successor[cnt]->data != NULL)
+	    break;
+	}
+      return cnt >= 0 ? retval : NULL;
+      /* NOTREACHED */
+    }
+
+  /* See whether the locale value is an alias.  If yes its value
+     *overwrites* the alias name.  No test for the original value is
+     done.  */
+  alias_value = _nl_expand_alias (locale);
+  if (alias_value != NULL)
+    {
+#if defined _LIBC || defined HAVE_STRDUP
+      locale = strdup (alias_value);
+      if (locale == NULL)
+	return NULL;
+#else
+      size_t len = strlen (alias_value) + 1;
+      locale = (char *) malloc (len);
+      if (locale == NULL)
+	return NULL;
+
+      memcpy (locale, alias_value, len);
+#endif
+    }
+
+  /* Now we determine the single parts of the locale name.  First
+     look for the language.  Termination symbols are `_' and `@' if
+     we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
+  mask = _nl_explode_name (locale, &language, &modifier, &territory,
+			   &codeset, &normalized_codeset, &special,
+			   &sponsor, &revision);
+
+  /* Create all possible locale entries which might be interested in
+     generalization.  */
+  retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname,
+			       strlen (dirname) + 1, mask, language, territory,
+			       codeset, normalized_codeset, modifier, special,
+			       sponsor, revision, domainname, 1);
+  if (retval == NULL)
+    /* This means we are out of core.  */
+    return NULL;
+
+  if (retval->decided == 0)
+    _nl_load_domain (retval, domainbinding);
+  if (retval->data == NULL)
+    {
+      int cnt;
+      for (cnt = 0; retval->successor[cnt] != NULL; ++cnt)
+	{
+	  if (retval->successor[cnt]->decided == 0)
+	    _nl_load_domain (retval->successor[cnt], domainbinding);
+	  if (retval->successor[cnt]->data != NULL)
+	    break;
+	}
+    }
+
+  /* The room for an alias was dynamically allocated.  Free it now.  */
+  if (alias_value != NULL)
+    free (locale);
+
+  /* The space for normalized_codeset is dynamically allocated.  Free it.  */
+  if (mask & XPG_NORM_CODESET)
+    free ((void *) normalized_codeset);
+
+  return retval;
+}
+
+
+#ifdef _LIBC
+static void __attribute__ ((unused))
+free_mem (void)
+{
+  struct loaded_l10nfile *runp = _nl_loaded_domains;
+
+  while (runp != NULL)
+    {
+      struct loaded_l10nfile *here = runp;
+      if (runp->data != NULL)
+	_nl_unload_domain ((struct loaded_domain *) runp->data);
+      runp = runp->next;
+      free ((char *) here->filename);
+      free (here);
+    }
+}
+
+text_set_element (__libc_subfreeres, free_mem);
+#endif
diff --git a/src/sed/intl/gettext.c b/src/sed/intl/gettext.c
new file mode 100644
index 0000000..79be831
--- /dev/null
+++ b/src/sed/intl/gettext.c
@@ -0,0 +1,64 @@
+/* Implementation of gettext(3) function.
+   Copyright (C) 1995, 1997, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef _LIBC
+# define __need_NULL
+# include <stddef.h>
+#else
+# include <stdlib.h>		/* Just for NULL.  */
+#endif
+
+#include "gettextP.h"
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgnuintl.h"
+#endif
+
+/* @@ end of prolog @@ */
+
+/* Names for the libintl functions are a problem.  They must not clash
+   with existing names and they should follow ANSI C.  But this source
+   code is also used in GNU C Library where the names have a __
+   prefix.  So we have to make a difference here.  */
+#ifdef _LIBC
+# define GETTEXT __gettext
+# define DCGETTEXT __dcgettext
+#else
+# define GETTEXT gettext__
+# define DCGETTEXT dcgettext__
+#endif
+
+/* Look up MSGID in the current default message catalog for the current
+   LC_MESSAGES locale.  If not found, returns MSGID itself (the default
+   text).  */
+char *
+GETTEXT (msgid)
+     const char *msgid;
+{
+  return DCGETTEXT (NULL, msgid, LC_MESSAGES);
+}
+
+#ifdef _LIBC
+/* Alias for function name in GNU C Library.  */
+weak_alias (__gettext, gettext);
+#endif
diff --git a/src/sed/intl/gettextP.h b/src/sed/intl/gettextP.h
new file mode 100644
index 0000000..ed6df97
--- /dev/null
+++ b/src/sed/intl/gettextP.h
@@ -0,0 +1,201 @@
+/* Header describing internals of libintl library.
+   Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
+   Written by Ulrich Drepper <drepper@cygnus.com>, 1995.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifndef _GETTEXTP_H
+#define _GETTEXTP_H
+
+#include <stddef.h>		/* Get size_t.  */
+
+#ifdef _LIBC
+# include "../iconv/gconv_int.h"
+#else
+# if HAVE_ICONV
+#  include <iconv.h>
+# endif
+#endif
+
+#include "loadinfo.h"
+
+#include "gmo.h"		/* Get nls_uint32.  */
+
+/* @@ end of prolog @@ */
+
+#ifndef PARAMS
+# if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES
+#  define PARAMS(args) args
+# else
+#  define PARAMS(args) ()
+# endif
+#endif
+
+#ifndef internal_function
+# define internal_function
+#endif
+
+/* Tell the compiler when a conditional or integer expression is
+   almost always true or almost always false.  */
+#ifndef HAVE_BUILTIN_EXPECT
+# define __builtin_expect(expr, val) (expr)
+#endif
+
+#ifndef W
+# define W(flag, data) ((flag) ? SWAP (data) : (data))
+#endif
+
+
+#ifdef _LIBC
+# include <byteswap.h>
+# define SWAP(i) bswap_32 (i)
+#else
+static inline nls_uint32
+SWAP (i)
+     nls_uint32 i;
+{
+  return (i << 24) | ((i & 0xff00) << 8) | ((i >> 8) & 0xff00) | (i >> 24);
+}
+#endif
+
+
+/* The representation of an opened message catalog.  */
+struct loaded_domain
+{
+  const char *data;
+  int use_mmap;
+  size_t mmap_size;
+  int must_swap;
+  nls_uint32 nstrings;
+  struct string_desc *orig_tab;
+  struct string_desc *trans_tab;
+  nls_uint32 hash_size;
+  nls_uint32 *hash_tab;
+  int codeset_cntr;
+#ifdef _LIBC
+  __gconv_t conv;
+#else
+# if HAVE_ICONV
+  iconv_t conv;
+# endif
+#endif
+  char **conv_tab;
+
+  struct expression *plural;
+  unsigned long int nplurals;
+};
+
+/* We want to allocate a string at the end of the struct.  But ISO C
+   doesn't allow zero sized arrays.  */
+#ifdef __GNUC__
+# define ZERO 0
+#else
+# define ZERO 1
+#endif
+
+/* A set of settings bound to a message domain.  Used to store settings
+   from bindtextdomain() and bind_textdomain_codeset().  */
+struct binding
+{
+  struct binding *next;
+  char *dirname;
+  int codeset_cntr;	/* Incremented each time codeset changes.  */
+  char *codeset;
+  char domainname[ZERO];
+};
+
+/* A counter which is incremented each time some previous translations
+   become invalid.
+   This variable is part of the external ABI of the GNU libintl.  */
+extern int _nl_msg_cat_cntr;
+
+#ifndef _LIBC
+const char *_nl_locale_name PARAMS ((int category, const char *categoryname));
+#endif
+
+struct loaded_l10nfile *_nl_find_domain PARAMS ((const char *__dirname,
+						 char *__locale,
+						 const char *__domainname,
+					      struct binding *__domainbinding))
+     internal_function;
+void _nl_load_domain PARAMS ((struct loaded_l10nfile *__domain,
+			      struct binding *__domainbinding))
+     internal_function;
+void _nl_unload_domain PARAMS ((struct loaded_domain *__domain))
+     internal_function;
+const char *_nl_init_domain_conv PARAMS ((struct loaded_l10nfile *__domain_file,
+					  struct loaded_domain *__domain,
+					  struct binding *__domainbinding))
+     internal_function;
+void _nl_free_domain_conv PARAMS ((struct loaded_domain *__domain))
+     internal_function;
+
+char *_nl_find_msg PARAMS ((struct loaded_l10nfile *domain_file,
+			    struct binding *domainbinding,
+			    const char *msgid, size_t *lengthp))
+     internal_function;
+
+#ifdef _LIBC
+extern char *__gettext PARAMS ((const char *__msgid));
+extern char *__dgettext PARAMS ((const char *__domainname,
+				 const char *__msgid));
+extern char *__dcgettext PARAMS ((const char *__domainname,
+				  const char *__msgid, int __category));
+extern char *__ngettext PARAMS ((const char *__msgid1, const char *__msgid2,
+				 unsigned long int __n));
+extern char *__dngettext PARAMS ((const char *__domainname,
+				  const char *__msgid1, const char *__msgid2,
+				  unsigned long int n));
+extern char *__dcngettext PARAMS ((const char *__domainname,
+				   const char *__msgid1, const char *__msgid2,
+				   unsigned long int __n, int __category));
+extern char *__dcigettext PARAMS ((const char *__domainname,
+				   const char *__msgid1, const char *__msgid2,
+				   int __plural, unsigned long int __n,
+				   int __category));
+extern char *__textdomain PARAMS ((const char *__domainname));
+extern char *__bindtextdomain PARAMS ((const char *__domainname,
+				       const char *__dirname));
+extern char *__bind_textdomain_codeset PARAMS ((const char *__domainname,
+						const char *__codeset));
+#else
+extern char *gettext__ PARAMS ((const char *__msgid));
+extern char *dgettext__ PARAMS ((const char *__domainname,
+				 const char *__msgid));
+extern char *dcgettext__ PARAMS ((const char *__domainname,
+				  const char *__msgid, int __category));
+extern char *ngettext__ PARAMS ((const char *__msgid1, const char *__msgid2,
+				 unsigned long int __n));
+extern char *dngettext__ PARAMS ((const char *__domainname,
+				  const char *__msgid1, const char *__msgid2,
+				  unsigned long int __n));
+extern char *dcngettext__ PARAMS ((const char *__domainname,
+				   const char *__msgid1, const char *__msgid2,
+				   unsigned long int __n, int __category));
+extern char *dcigettext__ PARAMS ((const char *__domainname,
+				   const char *__msgid1, const char *__msgid2,
+				   int __plural, unsigned long int __n,
+				   int __category));
+extern char *textdomain__ PARAMS ((const char *__domainname));
+extern char *bindtextdomain__ PARAMS ((const char *__domainname,
+				       const char *__dirname));
+extern char *bind_textdomain_codeset__ PARAMS ((const char *__domainname,
+						const char *__codeset));
+#endif
+
+/* @@ begin of epilog @@ */
+
+#endif /* gettextP.h  */
diff --git a/src/sed/intl/gmo.h b/src/sed/intl/gmo.h
new file mode 100644
index 0000000..547ee0d
--- /dev/null
+++ b/src/sed/intl/gmo.h
@@ -0,0 +1,100 @@
+/* Description of GNU message catalog format: general file layout.
+   Copyright (C) 1995, 1997, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifndef _GETTEXT_H
+#define _GETTEXT_H 1
+
+#include <limits.h>
+
+/* @@ end of prolog @@ */
+
+/* The magic number of the GNU message catalog format.  */
+#define _MAGIC 0x950412de
+#define _MAGIC_SWAPPED 0xde120495
+
+/* Revision number of the currently used .mo (binary) file format.  */
+#define MO_REVISION_NUMBER 0
+
+/* The following contortions are an attempt to use the C preprocessor
+   to determine an unsigned integral type that is 32 bits wide.  An
+   alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but
+   as of version autoconf-2.13, the AC_CHECK_SIZEOF macro doesn't work
+   when cross-compiling.  */
+
+#if __STDC__
+# define UINT_MAX_32_BITS 4294967295U
+#else
+# define UINT_MAX_32_BITS 0xFFFFFFFF
+#endif
+
+/* If UINT_MAX isn't defined, assume it's a 32-bit type.
+   This should be valid for all systems GNU cares about because
+   that doesn't include 16-bit systems, and only modern systems
+   (that certainly have <limits.h>) have 64+-bit integral types.  */
+
+#ifndef UINT_MAX
+# define UINT_MAX UINT_MAX_32_BITS
+#endif
+
+#if UINT_MAX == UINT_MAX_32_BITS
+typedef unsigned nls_uint32;
+#else
+# if USHRT_MAX == UINT_MAX_32_BITS
+typedef unsigned short nls_uint32;
+# else
+#  if ULONG_MAX == UINT_MAX_32_BITS
+typedef unsigned long nls_uint32;
+#  else
+  /* The following line is intended to throw an error.  Using #error is
+     not portable enough.  */
+  "Cannot determine unsigned 32-bit data type."
+#  endif
+# endif
+#endif
+
+
+/* Header for binary .mo file format.  */
+struct mo_file_header
+{
+  /* The magic number.  */
+  nls_uint32 magic;
+  /* The revision number of the file format.  */
+  nls_uint32 revision;
+  /* The number of strings pairs.  */
+  nls_uint32 nstrings;
+  /* Offset of table with start offsets of original strings.  */
+  nls_uint32 orig_tab_offset;
+  /* Offset of table with start offsets of translation strings.  */
+  nls_uint32 trans_tab_offset;
+  /* Size of hashing table.  */
+  nls_uint32 hash_tab_size;
+  /* Offset of first hashing entry.  */
+  nls_uint32 hash_tab_offset;
+};
+
+struct string_desc
+{
+  /* Length of addressed string.  */
+  nls_uint32 length;
+  /* Offset of string in file.  */
+  nls_uint32 offset;
+};
+
+/* @@ begin of epilog @@ */
+
+#endif	/* gettext.h  */
diff --git a/src/sed/intl/hash-string.h b/src/sed/intl/hash-string.h
new file mode 100644
index 0000000..1c63776
--- /dev/null
+++ b/src/sed/intl/hash-string.h
@@ -0,0 +1,59 @@
+/* Description of GNU message catalog format: string hashing function.
+   Copyright (C) 1995, 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* @@ end of prolog @@ */
+
+#ifndef PARAMS
+# if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES
+#  define PARAMS(Args) Args
+# else
+#  define PARAMS(Args) ()
+# endif
+#endif
+
+/* We assume to have `unsigned long int' value with at least 32 bits.  */
+#define HASHWORDBITS 32
+
+
+/* Defines the so called `hashpjw' function by P.J. Weinberger
+   [see Aho/Sethi/Ullman, COMPILERS: Principles, Techniques and Tools,
+   1986, 1987 Bell Telephone Laboratories, Inc.]  */
+static unsigned long int hash_string PARAMS ((const char *__str_param));
+
+static inline unsigned long int
+hash_string (str_param)
+     const char *str_param;
+{
+  unsigned long int hval, g;
+  const char *str = str_param;
+
+  /* Compute the hash value for the given string.  */
+  hval = 0;
+  while (*str != '\0')
+    {
+      hval <<= 4;
+      hval += (unsigned long int) *str++;
+      g = hval & ((unsigned long int) 0xf << (HASHWORDBITS - 4));
+      if (g != 0)
+	{
+	  hval ^= g >> (HASHWORDBITS - 8);
+	  hval ^= g;
+	}
+    }
+  return hval;
+}
diff --git a/src/sed/intl/intl-compat.c b/src/sed/intl/intl-compat.c
new file mode 100644
index 0000000..6b02d1e
--- /dev/null
+++ b/src/sed/intl/intl-compat.c
@@ -0,0 +1,166 @@
+/* intl-compat.c - Stub functions to call gettext functions from GNU gettext
+   Library.
+   Copyright (C) 1995, 2000, 2001 Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "libgnuintl.h"
+#include "gettextP.h"
+
+/* @@ end of prolog @@ */
+
+/* This file redirects the gettext functions (without prefix or suffix) to
+   those defined in the included GNU gettext library (with "__" suffix).
+   It is compiled into libintl when the included GNU gettext library is
+   configured --with-included-gettext.
+
+   This redirection works also in the case that the system C library or
+   the system libintl library contain gettext/textdomain/... functions.
+   If it didn't, we would need to add preprocessor level redirections to
+   libgnuintl.h of the following form:
+
+#    define gettext gettext__
+#    define dgettext dgettext__
+#    define dcgettext dcgettext__
+#    define ngettext ngettext__
+#    define dngettext dngettext__
+#    define dcngettext dcngettext__
+#    define textdomain textdomain__
+#    define bindtextdomain bindtextdomain__
+#    define bind_textdomain_codeset bind_textdomain_codeset__
+
+   How does this redirection work? There are two cases.
+   A. When libintl.a is linked into an executable, it works because
+      functions defined in the executable always override functions in
+      the shared libraries.
+   B. When libintl.so is used, it works because
+      1. those systems defining gettext/textdomain/... in the C library
+         (namely, Solaris 2.4 and newer, and GNU libc 2.0 and newer) are
+         ELF systems and define these symbols as weak, thus explicitly
+         letting other shared libraries override it.
+      2. those systems defining gettext/textdomain/... in a standalone
+         libintl.so library (namely, Solaris 2.3 and newer) have this
+         shared library in /usr/lib, and the linker will search /usr/lib
+         *after* the directory where the GNU gettext library is installed.
+
+   A third case, namely when libintl.a is linked into a shared library
+   whose name is not libintl.so, is not supported. In this case, on
+   Solaris, when -lintl precedes the linker option for the shared library
+   containing GNU gettext, the system's gettext would indeed override
+   the GNU gettext. Anyone doing this kind of stuff must be clever enough
+   to 1. compile libintl.a with -fPIC, 2. remove -lintl from his linker
+   command line.  */
+
+
+#undef gettext
+#undef dgettext
+#undef dcgettext
+#undef ngettext
+#undef dngettext
+#undef dcngettext
+#undef textdomain
+#undef bindtextdomain
+#undef bind_textdomain_codeset
+
+
+char *
+gettext (msgid)
+     const char *msgid;
+{
+  return gettext__ (msgid);
+}
+
+
+char *
+dgettext (domainname, msgid)
+     const char *domainname;
+     const char *msgid;
+{
+  return dgettext__ (domainname, msgid);
+}
+
+
+char *
+dcgettext (domainname, msgid, category)
+     const char *domainname;
+     const char *msgid;
+     int category;
+{
+  return dcgettext__ (domainname, msgid, category);
+}
+
+
+char *
+ngettext (msgid1, msgid2, n)
+     const char *msgid1;
+     const char *msgid2;
+     unsigned long int n;
+{
+  return ngettext__ (msgid1, msgid2, n);
+}
+
+
+char *
+dngettext (domainname, msgid1, msgid2, n)
+     const char *domainname;
+     const char *msgid1;
+     const char *msgid2;
+     unsigned long int n;
+{
+  return dngettext__ (domainname, msgid1, msgid2, n);
+}
+
+
+char *
+dcngettext (domainname, msgid1, msgid2, n, category)
+     const char *domainname;
+     const char *msgid1;
+     const char *msgid2;
+     unsigned long int n;
+     int category;
+{
+  return dcngettext__ (domainname, msgid1, msgid2, n, category);
+}
+
+
+char *
+textdomain (domainname)
+     const char *domainname;
+{
+  return textdomain__ (domainname);
+}
+
+
+char *
+bindtextdomain (domainname, dirname)
+     const char *domainname;
+     const char *dirname;
+{
+  return bindtextdomain__ (domainname, dirname);
+}
+
+
+char *
+bind_textdomain_codeset (domainname, codeset)
+     const char *domainname;
+     const char *codeset;
+{
+  return bind_textdomain_codeset__ (domainname, codeset);
+}
diff --git a/src/sed/intl/l10nflist.c b/src/sed/intl/l10nflist.c
new file mode 100644
index 0000000..b4ef297
--- /dev/null
+++ b/src/sed/intl/l10nflist.c
@@ -0,0 +1,400 @@
+/* Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
+   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* Tell glibc's <string.h> to provide a prototype for stpcpy().
+   This must come before <config.h> because <config.h> may include
+   <features.h>, and once <features.h> has been included, it's too late.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE	1
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <string.h>
+
+#if defined _LIBC || defined HAVE_ARGZ_H
+# include <argz.h>
+#endif
+#include <ctype.h>
+#include <sys/types.h>
+#include <stdlib.h>
+
+#include "loadinfo.h"
+
+/* On some strange systems still no definition of NULL is found.  Sigh!  */
+#ifndef NULL
+# if defined __STDC__ && __STDC__
+#  define NULL ((void *) 0)
+# else
+#  define NULL 0
+# endif
+#endif
+
+/* @@ end of prolog @@ */
+
+#ifdef _LIBC
+/* Rename the non ANSI C functions.  This is required by the standard
+   because some ANSI C functions will require linking with this object
+   file and the name space must not be polluted.  */
+# ifndef stpcpy
+#  define stpcpy(dest, src) __stpcpy(dest, src)
+# endif
+#else
+# ifndef HAVE_STPCPY
+static char *stpcpy PARAMS ((char *dest, const char *src));
+# endif
+#endif
+
+/* Define function which are usually not available.  */
+
+#if !defined _LIBC && !defined HAVE___ARGZ_COUNT
+/* Returns the number of strings in ARGZ.  */
+static size_t argz_count__ PARAMS ((const char *argz, size_t len));
+
+static size_t
+argz_count__ (argz, len)
+     const char *argz;
+     size_t len;
+{
+  size_t count = 0;
+  while (len > 0)
+    {
+      size_t part_len = strlen (argz);
+      argz += part_len + 1;
+      len -= part_len + 1;
+      count++;
+    }
+  return count;
+}
+# undef __argz_count
+# define __argz_count(argz, len) argz_count__ (argz, len)
+#endif	/* !_LIBC && !HAVE___ARGZ_COUNT */
+
+#if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY
+/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
+   except the last into the character SEP.  */
+static void argz_stringify__ PARAMS ((char *argz, size_t len, int sep));
+
+static void
+argz_stringify__ (argz, len, sep)
+     char *argz;
+     size_t len;
+     int sep;
+{
+  while (len > 0)
+    {
+      size_t part_len = strlen (argz);
+      argz += part_len;
+      len -= part_len + 1;
+      if (len > 0)
+	*argz++ = sep;
+    }
+}
+# undef __argz_stringify
+# define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep)
+#endif	/* !_LIBC && !HAVE___ARGZ_STRINGIFY */
+
+#if !defined _LIBC && !defined HAVE___ARGZ_NEXT
+static char *argz_next__ PARAMS ((char *argz, size_t argz_len,
+				  const char *entry));
+
+static char *
+argz_next__ (argz, argz_len, entry)
+     char *argz;
+     size_t argz_len;
+     const char *entry;
+{
+  if (entry)
+    {
+      if (entry < argz + argz_len)
+        entry = strchr (entry, '\0') + 1;
+
+      return entry >= argz + argz_len ? NULL : (char *) entry;
+    }
+  else
+    if (argz_len > 0)
+      return argz;
+    else
+      return 0;
+}
+# undef __argz_next
+# define __argz_next(argz, len, entry) argz_next__ (argz, len, entry)
+#endif	/* !_LIBC && !HAVE___ARGZ_NEXT */
+
+
+/* Return number of bits set in X.  */
+static int pop PARAMS ((int x));
+
+static inline int
+pop (x)
+     int x;
+{
+  /* We assume that no more than 16 bits are used.  */
+  x = ((x & ~0x5555) >> 1) + (x & 0x5555);
+  x = ((x & ~0x3333) >> 2) + (x & 0x3333);
+  x = ((x >> 4) + x) & 0x0f0f;
+  x = ((x >> 8) + x) & 0xff;
+
+  return x;
+}
+
+
+struct loaded_l10nfile *
+_nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language,
+		    territory, codeset, normalized_codeset, modifier, special,
+		    sponsor, revision, filename, do_allocate)
+     struct loaded_l10nfile **l10nfile_list;
+     const char *dirlist;
+     size_t dirlist_len;
+     int mask;
+     const char *language;
+     const char *territory;
+     const char *codeset;
+     const char *normalized_codeset;
+     const char *modifier;
+     const char *special;
+     const char *sponsor;
+     const char *revision;
+     const char *filename;
+     int do_allocate;
+{
+  char *abs_filename;
+  struct loaded_l10nfile *last = NULL;
+  struct loaded_l10nfile *retval;
+  char *cp;
+  size_t entries;
+  int cnt;
+
+  /* Allocate room for the full file name.  */
+  abs_filename = (char *) malloc (dirlist_len
+				  + strlen (language)
+				  + ((mask & TERRITORY) != 0
+				     ? strlen (territory) + 1 : 0)
+				  + ((mask & XPG_CODESET) != 0
+				     ? strlen (codeset) + 1 : 0)
+				  + ((mask & XPG_NORM_CODESET) != 0
+				     ? strlen (normalized_codeset) + 1 : 0)
+				  + (((mask & XPG_MODIFIER) != 0
+				      || (mask & CEN_AUDIENCE) != 0)
+				     ? strlen (modifier) + 1 : 0)
+				  + ((mask & CEN_SPECIAL) != 0
+				     ? strlen (special) + 1 : 0)
+				  + (((mask & CEN_SPONSOR) != 0
+				      || (mask & CEN_REVISION) != 0)
+				     ? (1 + ((mask & CEN_SPONSOR) != 0
+					     ? strlen (sponsor) + 1 : 0)
+					+ ((mask & CEN_REVISION) != 0
+					   ? strlen (revision) + 1 : 0)) : 0)
+				  + 1 + strlen (filename) + 1);
+
+  if (abs_filename == NULL)
+    return NULL;
+
+  retval = NULL;
+  last = NULL;
+
+  /* Construct file name.  */
+  memcpy (abs_filename, dirlist, dirlist_len);
+  __argz_stringify (abs_filename, dirlist_len, PATH_SEPARATOR);
+  cp = abs_filename + (dirlist_len - 1);
+  *cp++ = '/';
+  cp = stpcpy (cp, language);
+
+  if ((mask & TERRITORY) != 0)
+    {
+      *cp++ = '_';
+      cp = stpcpy (cp, territory);
+    }
+  if ((mask & XPG_CODESET) != 0)
+    {
+      *cp++ = '.';
+      cp = stpcpy (cp, codeset);
+    }
+  if ((mask & XPG_NORM_CODESET) != 0)
+    {
+      *cp++ = '.';
+      cp = stpcpy (cp, normalized_codeset);
+    }
+  if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0)
+    {
+      /* This component can be part of both syntaces but has different
+	 leading characters.  For CEN we use `+', else `@'.  */
+      *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@';
+      cp = stpcpy (cp, modifier);
+    }
+  if ((mask & CEN_SPECIAL) != 0)
+    {
+      *cp++ = '+';
+      cp = stpcpy (cp, special);
+    }
+  if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0)
+    {
+      *cp++ = ',';
+      if ((mask & CEN_SPONSOR) != 0)
+	cp = stpcpy (cp, sponsor);
+      if ((mask & CEN_REVISION) != 0)
+	{
+	  *cp++ = '_';
+	  cp = stpcpy (cp, revision);
+	}
+    }
+
+  *cp++ = '/';
+  stpcpy (cp, filename);
+
+  /* Look in list of already loaded domains whether it is already
+     available.  */
+  last = NULL;
+  for (retval = *l10nfile_list; retval != NULL; retval = retval->next)
+    if (retval->filename != NULL)
+      {
+	int compare = strcmp (retval->filename, abs_filename);
+	if (compare == 0)
+	  /* We found it!  */
+	  break;
+	if (compare < 0)
+	  {
+	    /* It's not in the list.  */
+	    retval = NULL;
+	    break;
+	  }
+
+	last = retval;
+      }
+
+  if (retval != NULL || do_allocate == 0)
+    {
+      free (abs_filename);
+      return retval;
+    }
+
+  retval = (struct loaded_l10nfile *)
+    malloc (sizeof (*retval) + (__argz_count (dirlist, dirlist_len)
+				* (1 << pop (mask))
+				* sizeof (struct loaded_l10nfile *)));
+  if (retval == NULL)
+    return NULL;
+
+  retval->filename = abs_filename;
+  retval->decided = (__argz_count (dirlist, dirlist_len) != 1
+		     || ((mask & XPG_CODESET) != 0
+			 && (mask & XPG_NORM_CODESET) != 0));
+  retval->data = NULL;
+
+  if (last == NULL)
+    {
+      retval->next = *l10nfile_list;
+      *l10nfile_list = retval;
+    }
+  else
+    {
+      retval->next = last->next;
+      last->next = retval;
+    }
+
+  entries = 0;
+  /* If the DIRLIST is a real list the RETVAL entry corresponds not to
+     a real file.  So we have to use the DIRLIST separation mechanism
+     of the inner loop.  */
+  cnt = __argz_count (dirlist, dirlist_len) == 1 ? mask - 1 : mask;
+  for (; cnt >= 0; --cnt)
+    if ((cnt & ~mask) == 0
+	&& ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0)
+	&& ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0))
+      {
+	/* Iterate over all elements of the DIRLIST.  */
+	char *dir = NULL;
+
+	while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir))
+	       != NULL)
+	  retval->successor[entries++]
+	    = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1, cnt,
+				  language, territory, codeset,
+				  normalized_codeset, modifier, special,
+				  sponsor, revision, filename, 1);
+      }
+  retval->successor[entries] = NULL;
+
+  return retval;
+}
+
+/* Normalize codeset name.  There is no standard for the codeset
+   names.  Normalization allows the user to use any of the common
+   names.  The return value is dynamically allocated and has to be
+   freed by the caller.  */
+const char *
+_nl_normalize_codeset (codeset, name_len)
+     const char *codeset;
+     size_t name_len;
+{
+  int len = 0;
+  int only_digit = 1;
+  char *retval;
+  char *wp;
+  size_t cnt;
+
+  for (cnt = 0; cnt < name_len; ++cnt)
+    if (isalnum ((unsigned char) codeset[cnt]))
+      {
+	++len;
+
+	if (isalpha ((unsigned char) codeset[cnt]))
+	  only_digit = 0;
+      }
+
+  retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1);
+
+  if (retval != NULL)
+    {
+      if (only_digit)
+	wp = stpcpy (retval, "iso");
+      else
+	wp = retval;
+
+      for (cnt = 0; cnt < name_len; ++cnt)
+	if (isalpha ((unsigned char) codeset[cnt]))
+	  *wp++ = tolower ((unsigned char) codeset[cnt]);
+	else if (isdigit ((unsigned char) codeset[cnt]))
+	  *wp++ = codeset[cnt];
+
+      *wp = '\0';
+    }
+
+  return (const char *) retval;
+}
+
+
+/* @@ begin of epilog @@ */
+
+/* We don't want libintl.a to depend on any other library.  So we
+   avoid the non-standard function stpcpy.  In GNU C Library this
+   function is available, though.  Also allow the symbol HAVE_STPCPY
+   to be defined.  */
+#if !_LIBC && !HAVE_STPCPY
+static char *
+stpcpy (dest, src)
+     char *dest;
+     const char *src;
+{
+  while ((*dest++ = *src++) != '\0')
+    /* Do nothing. */ ;
+  return dest - 1;
+}
+#endif
diff --git a/src/sed/intl/libgnuintl.h b/src/sed/intl/libgnuintl.h
new file mode 100644
index 0000000..70202f8
--- /dev/null
+++ b/src/sed/intl/libgnuintl.h
@@ -0,0 +1,137 @@
+/* Message catalogs for internationalization.
+   Copyright (C) 1995-1997, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifndef _LIBINTL_H
+#define _LIBINTL_H	1
+
+#include <locale.h>
+
+/* The LC_MESSAGES locale category is the category used by the functions
+   gettext() and dgettext().  It is specified in POSIX, but not in ANSI C.
+   On systems that don't define it, use an arbitrary value instead.
+   On Solaris, <locale.h> defines __LOCALE_H then includes <libintl.h> (i.e.
+   this file!) and then only defines LC_MESSAGES.  To avoid a redefinition
+   warning, don't define LC_MESSAGES in this case.  */
+#if !defined LC_MESSAGES && !defined __LOCALE_H
+# define LC_MESSAGES 1729
+#endif
+
+/* We define an additional symbol to signal that we use the GNU
+   implementation of gettext.  */
+#define __USE_GNU_GETTEXT 1
+
+/* Resolve a platform specific conflict on DJGPP.  GNU gettext takes
+   precedence over _conio_gettext.  */
+#ifdef __DJGPP__
+# undef gettext
+# define gettext gettext
+#endif
+
+/* Use _INTL_PARAMS, not PARAMS, in order to avoid clashes with identifiers
+   used by programs.  Similarly, test __PROTOTYPES, not PROTOTYPES.  */
+#ifndef _INTL_PARAMS
+# if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES
+#  define _INTL_PARAMS(args) args
+# else
+#  define _INTL_PARAMS(args) ()
+# endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Look up MSGID in the current default message catalog for the current
+   LC_MESSAGES locale.  If not found, returns MSGID itself (the default
+   text).  */
+extern char *gettext _INTL_PARAMS ((const char *__msgid));
+
+/* Look up MSGID in the DOMAINNAME message catalog for the current
+   LC_MESSAGES locale.  */
+extern char *dgettext _INTL_PARAMS ((const char *__domainname,
+				     const char *__msgid));
+
+/* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY
+   locale.  */
+extern char *dcgettext _INTL_PARAMS ((const char *__domainname,
+				      const char *__msgid,
+				      int __category));
+
+
+/* Similar to `gettext' but select the plural form corresponding to the
+   number N.  */
+extern char *ngettext _INTL_PARAMS ((const char *__msgid1,
+				     const char *__msgid2,
+				     unsigned long int __n));
+
+/* Similar to `dgettext' but select the plural form corresponding to the
+   number N.  */
+extern char *dngettext _INTL_PARAMS ((const char *__domainname,
+				      const char *__msgid1,
+				      const char *__msgid2,
+				      unsigned long int __n));
+
+/* Similar to `dcgettext' but select the plural form corresponding to the
+   number N.  */
+extern char *dcngettext _INTL_PARAMS ((const char *__domainname,
+				       const char *__msgid1,
+				       const char *__msgid2,
+				       unsigned long int __n,
+				       int __category));
+
+
+/* Set the current default message catalog to DOMAINNAME.
+   If DOMAINNAME is null, return the current default.
+   If DOMAINNAME is "", reset to the default of "messages".  */
+extern char *textdomain _INTL_PARAMS ((const char *__domainname));
+
+/* Specify that the DOMAINNAME message catalog will be found
+   in DIRNAME rather than in the system locale data base.  */
+extern char *bindtextdomain _INTL_PARAMS ((const char *__domainname,
+					   const char *__dirname));
+
+/* Specify the character encoding in which the messages from the
+   DOMAINNAME message catalog will be returned.  */
+extern char *bind_textdomain_codeset _INTL_PARAMS ((const char *__domainname,
+						    const char *__codeset));
+
+
+/* Optimized version of the functions above.  */
+#if defined __OPTIMIZED
+/* These are macros, but could also be inline functions.  */
+
+# define gettext(msgid)							      \
+  dgettext (NULL, msgid)
+
+# define dgettext(domainname, msgid)					      \
+  dcgettext (domainname, msgid, LC_MESSAGES)
+
+# define ngettext(msgid1, msgid2, n)					      \
+  dngettext (NULL, msgid1, msgid2, n)
+
+# define dngettext(domainname, msgid1, msgid2, n)			      \
+  dcngettext (domainname, msgid1, msgid2, n, LC_MESSAGES)
+
+#endif /* Optimizing. */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* libintl.h */
diff --git a/src/sed/intl/loadinfo.h b/src/sed/intl/loadinfo.h
new file mode 100644
index 0000000..5f2c3d6
--- /dev/null
+++ b/src/sed/intl/loadinfo.h
@@ -0,0 +1,121 @@
+/* Copyright (C) 1996-1999, 2000, 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifndef _LOADINFO_H
+#define _LOADINFO_H	1
+
+/* Declarations of locale dependent catalog lookup functions.
+   Implemented in
+
+     localealias.c    Possibly replace a locale name by another.
+     explodename.c    Split a locale name into its various fields.
+     l10nflist.c      Generate a list of filenames of possible message catalogs.
+     finddomain.c     Find and open the relevant message catalogs.
+
+   The main function _nl_find_domain() in finddomain.c is declared
+   in gettextP.h.
+ */
+
+#ifndef PARAMS
+# if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES
+#  define PARAMS(args) args
+# else
+#  define PARAMS(args) ()
+# endif
+#endif
+
+#ifndef internal_function
+# define internal_function
+#endif
+
+/* Tell the compiler when a conditional or integer expression is
+   almost always true or almost always false.  */
+#ifndef HAVE_BUILTIN_EXPECT
+# define __builtin_expect(expr, val) (expr)
+#endif
+
+/* Separator in PATH like lists of pathnames.  */
+#if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
+  /* Win32, OS/2, DOS */
+# define PATH_SEPARATOR ';'
+#else
+  /* Unix */
+# define PATH_SEPARATOR ':'
+#endif
+
+/* Encoding of locale name parts.  */
+#define CEN_REVISION		1
+#define CEN_SPONSOR		2
+#define CEN_SPECIAL		4
+#define XPG_NORM_CODESET	8
+#define XPG_CODESET		16
+#define TERRITORY		32
+#define CEN_AUDIENCE		64
+#define XPG_MODIFIER		128
+
+#define CEN_SPECIFIC	(CEN_REVISION|CEN_SPONSOR|CEN_SPECIAL|CEN_AUDIENCE)
+#define XPG_SPECIFIC	(XPG_CODESET|XPG_NORM_CODESET|XPG_MODIFIER)
+
+
+struct loaded_l10nfile
+{
+  const char *filename;
+  int decided;
+
+  const void *data;
+
+  struct loaded_l10nfile *next;
+  struct loaded_l10nfile *successor[1];
+};
+
+
+/* Normalize codeset name.  There is no standard for the codeset
+   names.  Normalization allows the user to use any of the common
+   names.  The return value is dynamically allocated and has to be
+   freed by the caller.  */
+extern const char *_nl_normalize_codeset PARAMS ((const char *codeset,
+						  size_t name_len));
+
+extern struct loaded_l10nfile *
+_nl_make_l10nflist PARAMS ((struct loaded_l10nfile **l10nfile_list,
+			    const char *dirlist, size_t dirlist_len, int mask,
+			    const char *language, const char *territory,
+			    const char *codeset,
+			    const char *normalized_codeset,
+			    const char *modifier, const char *special,
+			    const char *sponsor, const char *revision,
+			    const char *filename, int do_allocate));
+
+
+extern const char *_nl_expand_alias PARAMS ((const char *name));
+
+/* normalized_codeset is dynamically allocated and has to be freed by
+   the caller.  */
+extern int _nl_explode_name PARAMS ((char *name, const char **language,
+				     const char **modifier,
+				     const char **territory,
+				     const char **codeset,
+				     const char **normalized_codeset,
+				     const char **special,
+				     const char **sponsor,
+				     const char **revision));
+
+extern char *_nl_find_language PARAMS ((const char *name));
+
+#endif	/* loadinfo.h */
diff --git a/src/sed/intl/loadmsgcat.c b/src/sed/intl/loadmsgcat.c
new file mode 100644
index 0000000..d8e9be4
--- /dev/null
+++ b/src/sed/intl/loadmsgcat.c
@@ -0,0 +1,445 @@
+/* Load needed message catalogs.
+   Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* Tell glibc's <string.h> to provide a prototype for mempcpy().
+   This must come before <config.h> because <config.h> may include
+   <features.h>, and once <features.h> has been included, it's too late.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE    1
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifdef __GNUC__
+# define alloca __builtin_alloca
+# define HAVE_ALLOCA 1
+#else
+# if defined HAVE_ALLOCA_H || defined _LIBC
+#  include <alloca.h>
+# else
+#  ifdef _AIX
+ #pragma alloca
+#  else
+#   ifndef alloca
+char *alloca ();
+#   endif
+#  endif
+# endif
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#if defined HAVE_UNISTD_H || defined _LIBC
+# include <unistd.h>
+#endif
+
+#ifdef _LIBC
+# include <langinfo.h>
+# include <locale.h>
+#endif
+
+#if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \
+    || (defined _LIBC && defined _POSIX_MAPPED_FILES)
+# include <sys/mman.h>
+# undef HAVE_MMAP
+# define HAVE_MMAP	1
+#else
+# undef HAVE_MMAP
+#endif
+
+#include "gmo.h"
+#include "gettextP.h"
+#include "plural-exp.h"
+
+#ifdef _LIBC
+# include "../locale/localeinfo.h"
+#endif
+
+/* @@ end of prolog @@ */
+
+#ifdef _LIBC
+/* Rename the non ISO C functions.  This is required by the standard
+   because some ISO C functions will require linking with this object
+   file and the name space must not be polluted.  */
+# define open   __open
+# define close  __close
+# define read   __read
+# define mmap   __mmap
+# define munmap __munmap
+#endif
+
+/* For those losing systems which don't have `alloca' we have to add
+   some additional code emulating it.  */
+#ifdef HAVE_ALLOCA
+# define freea(p) /* nothing */
+#else
+# define alloca(n) malloc (n)
+# define freea(p) free (p)
+#endif
+
+/* For systems that distinguish between text and binary I/O.
+   O_BINARY is usually declared in <fcntl.h>. */
+#if !defined O_BINARY && defined _O_BINARY
+  /* For MSC-compatible compilers.  */
+# define O_BINARY _O_BINARY
+# define O_TEXT _O_TEXT
+#endif
+#ifdef __BEOS__
+  /* BeOS 5 has O_BINARY and O_TEXT, but they have no effect.  */
+# undef O_BINARY
+# undef O_TEXT
+#endif
+/* On reasonable systems, binary I/O is the default.  */
+#ifndef O_BINARY
+# define O_BINARY 0
+#endif
+
+/* We need a sign, whether a new catalog was loaded, which can be associated
+   with all translations.  This is important if the translations are
+   cached by one of GCC's features.  */
+int _nl_msg_cat_cntr;
+
+
+/* Initialize the codeset dependent parts of an opened message catalog.
+   Return the header entry.  */
+const char *
+internal_function
+_nl_init_domain_conv (domain_file, domain, domainbinding)
+     struct loaded_l10nfile *domain_file;
+     struct loaded_domain *domain;
+     struct binding *domainbinding;
+{
+  /* Find out about the character set the file is encoded with.
+     This can be found (in textual form) in the entry "".  If this
+     entry does not exist or if this does not contain the `charset='
+     information, we will assume the charset matches the one the
+     current locale and we don't have to perform any conversion.  */
+  char *nullentry;
+  size_t nullentrylen;
+
+  /* Preinitialize fields, to avoid recursion during _nl_find_msg.  */
+  domain->codeset_cntr =
+    (domainbinding != NULL ? domainbinding->codeset_cntr : 0);
+#ifdef _LIBC
+  domain->conv = (__gconv_t) -1;
+#else
+# if HAVE_ICONV
+  domain->conv = (iconv_t) -1;
+# endif
+#endif
+  domain->conv_tab = NULL;
+
+  /* Get the header entry.  */
+  nullentry = _nl_find_msg (domain_file, domainbinding, "", &nullentrylen);
+
+  if (nullentry != NULL)
+    {
+#if defined _LIBC || HAVE_ICONV
+      const char *charsetstr;
+
+      charsetstr = strstr (nullentry, "charset=");
+      if (charsetstr != NULL)
+	{
+	  size_t len;
+	  char *charset;
+	  const char *outcharset;
+
+	  charsetstr += strlen ("charset=");
+	  len = strcspn (charsetstr, " \t\n");
+
+	  charset = (char *) alloca (len + 1);
+# if defined _LIBC || HAVE_MEMPCPY
+	  *((char *) mempcpy (charset, charsetstr, len)) = '\0';
+# else
+	  memcpy (charset, charsetstr, len);
+	  charset[len] = '\0';
+# endif
+
+	  /* The output charset should normally be determined by the
+	     locale.  But sometimes the locale is not used or not correctly
+	     set up, so we provide a possibility for the user to override
+	     this.  Moreover, the value specified through
+	     bind_textdomain_codeset overrides both.  */
+	  if (domainbinding != NULL && domainbinding->codeset != NULL)
+	    outcharset = domainbinding->codeset;
+	  else
+	    {
+	      outcharset = getenv ("OUTPUT_CHARSET");
+	      if (outcharset == NULL || outcharset[0] == '\0')
+		{
+# ifdef _LIBC
+		  outcharset = (*_nl_current[LC_CTYPE])->values[_NL_ITEM_INDEX (CODESET)].string;
+# else
+#  if HAVE_ICONV
+		  extern const char *locale_charset PARAMS ((void));
+		  outcharset = locale_charset ();
+#  endif
+# endif
+		}
+	    }
+
+# ifdef _LIBC
+	  /* We always want to use transliteration.  */
+	  outcharset = norm_add_slashes (outcharset, "TRANSLIT");
+	  charset = norm_add_slashes (charset, NULL);
+	  if (__gconv_open (outcharset, charset, &domain->conv,
+			    GCONV_AVOID_NOCONV)
+	      != __GCONV_OK)
+	    domain->conv = (__gconv_t) -1;
+# else
+#  if HAVE_ICONV
+	  /* When using GNU libc >= 2.2 or GNU libiconv >= 1.5,
+	     we want to use transliteration.  */
+#   if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) || __GLIBC__ > 2 \
+       || _LIBICONV_VERSION >= 0x0105
+	  len = strlen (outcharset);
+	  {
+	    char *tmp = (char *) alloca (len + 10 + 1);
+	    memcpy (tmp, outcharset, len);
+	    memcpy (tmp + len, "//TRANSLIT", 10 + 1);
+	    outcharset = tmp;
+	  }
+#   endif
+	  domain->conv = iconv_open (outcharset, charset);
+#   if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) || __GLIBC__ > 2 \
+       || _LIBICONV_VERSION >= 0x0105
+	  freea (outcharset);
+#   endif
+#  endif
+# endif
+
+	  freea (charset);
+	}
+#endif /* _LIBC || HAVE_ICONV */
+    }
+
+  return nullentry;
+}
+
+/* Frees the codeset dependent parts of an opened message catalog.  */
+void
+internal_function
+_nl_free_domain_conv (domain)
+     struct loaded_domain *domain;
+{
+  if (domain->conv_tab != NULL && domain->conv_tab != (char **) -1)
+    free (domain->conv_tab);
+
+#ifdef _LIBC
+  if (domain->conv != (__gconv_t) -1)
+    __gconv_close (domain->conv);
+#else
+# if HAVE_ICONV
+  if (domain->conv != (iconv_t) -1)
+    iconv_close (domain->conv);
+# endif
+#endif
+}
+
+/* Load the message catalogs specified by FILENAME.  If it is no valid
+   message catalog do nothing.  */
+void
+internal_function
+_nl_load_domain (domain_file, domainbinding)
+     struct loaded_l10nfile *domain_file;
+     struct binding *domainbinding;
+{
+  int fd;
+  size_t size;
+#ifdef _LIBC
+  struct stat64 st;
+#else
+  struct stat st;
+#endif
+  struct mo_file_header *data = (struct mo_file_header *) -1;
+  int use_mmap = 0;
+  struct loaded_domain *domain;
+  const char *nullentry;
+
+  domain_file->decided = 1;
+  domain_file->data = NULL;
+
+  /* Note that it would be useless to store domainbinding in domain_file
+     because domainbinding might be == NULL now but != NULL later (after
+     a call to bind_textdomain_codeset).  */
+
+  /* If the record does not represent a valid locale the FILENAME
+     might be NULL.  This can happen when according to the given
+     specification the locale file name is different for XPG and CEN
+     syntax.  */
+  if (domain_file->filename == NULL)
+    return;
+
+  /* Try to open the addressed file.  */
+  fd = open (domain_file->filename, O_RDONLY | O_BINARY);
+  if (fd == -1)
+    return;
+
+  /* We must know about the size of the file.  */
+  if (
+#ifdef _LIBC
+      __builtin_expect (fstat64 (fd, &st) != 0, 0)
+#else
+      __builtin_expect (fstat (fd, &st) != 0, 0)
+#endif
+      || __builtin_expect ((size = (size_t) st.st_size) != st.st_size, 0)
+      || __builtin_expect (size < sizeof (struct mo_file_header), 0))
+    {
+      /* Something went wrong.  */
+      close (fd);
+      return;
+    }
+
+#ifdef HAVE_MMAP
+  /* Now we are ready to load the file.  If mmap() is available we try
+     this first.  If not available or it failed we try to load it.  */
+  data = (struct mo_file_header *) mmap (NULL, size, PROT_READ,
+					 MAP_PRIVATE, fd, 0);
+
+  if (__builtin_expect (data != (struct mo_file_header *) -1, 1))
+    {
+      /* mmap() call was successful.  */
+      close (fd);
+      use_mmap = 1;
+    }
+#endif
+
+  /* If the data is not yet available (i.e. mmap'ed) we try to load
+     it manually.  */
+  if (data == (struct mo_file_header *) -1)
+    {
+      size_t to_read;
+      char *read_ptr;
+
+      data = (struct mo_file_header *) malloc (size);
+      if (data == NULL)
+	return;
+
+      to_read = size;
+      read_ptr = (char *) data;
+      do
+	{
+	  long int nb = (long int) read (fd, read_ptr, to_read);
+	  if (nb <= 0)
+	    {
+#ifdef EINTR
+	      if (nb == -1 && errno == EINTR)
+		continue;
+#endif
+	      close (fd);
+	      return;
+	    }
+	  read_ptr += nb;
+	  to_read -= nb;
+	}
+      while (to_read > 0);
+
+      close (fd);
+    }
+
+  /* Using the magic number we can test whether it really is a message
+     catalog file.  */
+  if (__builtin_expect (data->magic != _MAGIC && data->magic != _MAGIC_SWAPPED,
+			0))
+    {
+      /* The magic number is wrong: not a message catalog file.  */
+#ifdef HAVE_MMAP
+      if (use_mmap)
+	munmap ((caddr_t) data, size);
+      else
+#endif
+	free (data);
+      return;
+    }
+
+  domain = (struct loaded_domain *) malloc (sizeof (struct loaded_domain));
+  if (domain == NULL)
+    return;
+  domain_file->data = domain;
+
+  domain->data = (char *) data;
+  domain->use_mmap = use_mmap;
+  domain->mmap_size = size;
+  domain->must_swap = data->magic != _MAGIC;
+
+  /* Fill in the information about the available tables.  */
+  switch (W (domain->must_swap, data->revision))
+    {
+    case 0:
+      domain->nstrings = W (domain->must_swap, data->nstrings);
+      domain->orig_tab = (struct string_desc *)
+	((char *) data + W (domain->must_swap, data->orig_tab_offset));
+      domain->trans_tab = (struct string_desc *)
+	((char *) data + W (domain->must_swap, data->trans_tab_offset));
+      domain->hash_size = W (domain->must_swap, data->hash_tab_size);
+      domain->hash_tab = (nls_uint32 *)
+	((char *) data + W (domain->must_swap, data->hash_tab_offset));
+      break;
+    default:
+      /* This is an invalid revision.  */
+#ifdef HAVE_MMAP
+      if (use_mmap)
+	munmap ((caddr_t) data, size);
+      else
+#endif
+	free (data);
+      free (domain);
+      domain_file->data = NULL;
+      return;
+    }
+
+  /* Now initialize the character set converter from the character set
+     the file is encoded with (found in the header entry) to the domain's
+     specified character set or the locale's character set.  */
+  nullentry = _nl_init_domain_conv (domain_file, domain, domainbinding);
+
+  /* Also look for a plural specification.  */
+  EXTRACT_PLURAL_EXPRESSION (nullentry, &domain->plural, &domain->nplurals);
+}
+
+
+#ifdef _LIBC
+void
+internal_function
+_nl_unload_domain (domain)
+     struct loaded_domain *domain;
+{
+  if (domain->plural != &__gettext_germanic_plural)
+    __gettext_free_exp (domain->plural);
+
+  _nl_free_domain_conv (domain);
+
+# ifdef _POSIX_MAPPED_FILES
+  if (domain->use_mmap)
+    munmap ((caddr_t) domain->data, domain->mmap_size);
+  else
+# endif	/* _POSIX_MAPPED_FILES */
+    free ((void *) domain->data);
+
+  free (domain);
+}
+#endif
diff --git a/src/sed/intl/localcharset.c b/src/sed/intl/localcharset.c
new file mode 100644
index 0000000..fad6f63
--- /dev/null
+++ b/src/sed/intl/localcharset.c
@@ -0,0 +1,345 @@
+/* Determine a canonical name for the current locale's character encoding.
+
+   Copyright (C) 2000-2002 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* Written by Bruno Haible <haible@clisp.cons.org>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if HAVE_STDDEF_H
+# include <stddef.h>
+#endif
+
+#include <stdio.h>
+#if HAVE_STRING_H
+# include <string.h>
+#else
+# include <strings.h>
+#endif
+#if HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+
+#if defined _WIN32 || defined __WIN32__
+# undef WIN32   /* avoid warning on mingw32 */
+# define WIN32
+#endif
+
+#if defined __EMX__
+/* Assume EMX program runs on OS/2, even if compiled under DOS.  */
+# define OS2
+#endif
+
+#if !defined WIN32
+# if HAVE_LANGINFO_CODESET
+#  include <langinfo.h>
+# else
+#  if HAVE_SETLOCALE
+#   include <locale.h>
+#  endif
+# endif
+#elif defined WIN32
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+#endif
+#if defined OS2
+# define INCL_DOS
+# include <os2.h>
+#endif
+
+#if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
+  /* Win32, OS/2, DOS */
+# define ISSLASH(C) ((C) == '/' || (C) == '\\')
+#endif
+
+#ifndef DIRECTORY_SEPARATOR
+# define DIRECTORY_SEPARATOR '/'
+#endif
+
+#ifndef ISSLASH
+# define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR)
+#endif
+
+#ifdef HAVE_GETC_UNLOCKED
+# undef getc
+# define getc getc_unlocked
+#endif
+
+/* The following static variable is declared 'volatile' to avoid a
+   possible multithread problem in the function get_charset_aliases. If we
+   are running in a threaded environment, and if two threads initialize
+   'charset_aliases' simultaneously, both will produce the same value,
+   and everything will be ok if the two assignments to 'charset_aliases'
+   are atomic. But I don't know what will happen if the two assignments mix.  */
+#if __STDC__ != 1
+# define volatile /* empty */
+#endif
+/* Pointer to the contents of the charset.alias file, if it has already been
+   read, else NULL.  Its format is:
+   ALIAS_1 '\0' CANONICAL_1 '\0' ... ALIAS_n '\0' CANONICAL_n '\0' '\0'  */
+static const char * volatile charset_aliases;
+
+/* Return a pointer to the contents of the charset.alias file.  */
+static const char *
+get_charset_aliases ()
+{
+  const char *cp;
+
+  cp = charset_aliases;
+  if (cp == NULL)
+    {
+#if !defined WIN32
+      FILE *fp;
+      const char *dir = LIBDIR;
+      const char *base = "charset.alias";
+      char *file_name;
+
+      /* Concatenate dir and base into freshly allocated file_name.  */
+      {
+	size_t dir_len = strlen (dir);
+	size_t base_len = strlen (base);
+	int add_slash = (dir_len > 0 && !ISSLASH (dir[dir_len - 1]));
+	file_name = (char *) malloc (dir_len + add_slash + base_len + 1);
+	if (file_name != NULL)
+	  {
+	    memcpy (file_name, dir, dir_len);
+	    if (add_slash)
+	      file_name[dir_len] = DIRECTORY_SEPARATOR;
+	    memcpy (file_name + dir_len + add_slash, base, base_len + 1);
+	  }
+      }
+
+      if (file_name == NULL || (fp = fopen (file_name, "r")) == NULL)
+	/* Out of memory or file not found, treat it as empty.  */
+	cp = "";
+      else
+	{
+	  /* Parse the file's contents.  */
+	  int c;
+	  char buf1[50+1];
+	  char buf2[50+1];
+	  char *res_ptr = NULL;
+	  size_t res_size = 0;
+	  size_t l1, l2;
+
+	  for (;;)
+	    {
+	      c = getc (fp);
+	      if (c == EOF)
+		break;
+	      if (c == '\n' || c == ' ' || c == '\t')
+		continue;
+	      if (c == '#')
+		{
+		  /* Skip comment, to end of line.  */
+		  do
+		    c = getc (fp);
+		  while (!(c == EOF || c == '\n'));
+		  if (c == EOF)
+		    break;
+		  continue;
+		}
+	      ungetc (c, fp);
+	      if (fscanf (fp, "%50s %50s", buf1, buf2) < 2)
+		break;
+	      l1 = strlen (buf1);
+	      l2 = strlen (buf2);
+	      if (res_size == 0)
+		{
+		  res_size = l1 + 1 + l2 + 1;
+		  res_ptr = (char *) malloc (res_size + 1);
+		}
+	      else
+		{
+		  res_size += l1 + 1 + l2 + 1;
+		  res_ptr = (char *) realloc (res_ptr, res_size + 1);
+		}
+	      if (res_ptr == NULL)
+		{
+		  /* Out of memory. */
+		  res_size = 0;
+		  break;
+		}
+	      strcpy (res_ptr + res_size - (l2 + 1) - (l1 + 1), buf1);
+	      strcpy (res_ptr + res_size - (l2 + 1), buf2);
+	    }
+	  fclose (fp);
+	  if (res_size == 0)
+	    cp = "";
+	  else
+	    {
+	      *(res_ptr + res_size) = '\0';
+	      cp = res_ptr;
+	    }
+	}
+
+      if (file_name != NULL)
+	free (file_name);
+
+#else
+
+      /* To avoid the troubles of installing a separate file in the same
+	 directory as the DLL and of retrieving the DLL's directory at
+	 runtime, simply inline the aliases here.  */
+
+# if defined WIN32
+      cp = "CP936" "\0" "GBK" "\0"
+	   "CP1361" "\0" "JOHAB" "\0";
+# endif
+#endif
+
+      charset_aliases = cp;
+    }
+
+  return cp;
+}
+
+/* Determine the current locale's character encoding, and canonicalize it
+   into one of the canonical names listed in config.charset.
+   The result must not be freed; it is statically allocated.
+   If the canonical name cannot be determined, the result is a non-canonical
+   name.  */
+
+#ifdef STATIC
+STATIC
+#endif
+const char *
+locale_charset ()
+{
+  const char *codeset;
+  const char *aliases;
+
+#if !(defined WIN32 || defined OS2)
+
+# if HAVE_LANGINFO_CODESET
+
+  /* Most systems support nl_langinfo (CODESET) nowadays.  */
+  codeset = nl_langinfo (CODESET);
+
+# else
+
+  /* On old systems which lack it, use setlocale or getenv.  */
+  const char *locale = NULL;
+
+  /* But most old systems don't have a complete set of locales.  Some
+     (like SunOS 4 or DJGPP) have only the C locale.  Therefore we don't
+     use setlocale here; it would return "C" when it doesn't support the
+     locale name the user has set.  */
+#  if HAVE_SETLOCALE && 0
+  locale = setlocale (LC_CTYPE, NULL);
+#  endif
+  if (locale == NULL || locale[0] == '\0')
+    {
+      locale = getenv ("LC_ALL");
+      if (locale == NULL || locale[0] == '\0')
+	{
+	  locale = getenv ("LC_CTYPE");
+	  if (locale == NULL || locale[0] == '\0')
+	    locale = getenv ("LANG");
+	}
+    }
+
+  /* On some old systems, one used to set locale = "iso8859_1". On others,
+     you set it to "language_COUNTRY.charset". In any case, we resolve it
+     through the charset.alias file.  */
+  codeset = locale;
+
+# endif
+
+#elif defined WIN32
+
+  static char buf[2 + 10 + 1];
+
+  /* Win32 has a function returning the locale's codepage as a number.  */
+  sprintf (buf, "CP%u", GetACP ());
+  codeset = buf;
+
+#elif defined OS2
+
+  const char *locale;
+  static char buf[2 + 10 + 1];
+  ULONG cp[3];
+  ULONG cplen;
+
+  /* Allow user to override the codeset, as set in the operating system,
+     with standard language environment variables.  */
+  locale = getenv ("LC_ALL");
+  if (locale == NULL || locale[0] == '\0')
+    {
+      locale = getenv ("LC_CTYPE");
+      if (locale == NULL || locale[0] == '\0')
+	locale = getenv ("LANG");
+    }
+  if (locale != NULL && locale[0] != '\0')
+    {
+      /* If the locale name contains an encoding after the dot, return it.  */
+      const char *dot = strchr (locale, '.');
+
+      if (dot != NULL)
+	{
+	  const char *modifier;
+
+	  dot++;
+	  /* Look for the possible @... trailer and remove it, if any.  */
+	  modifier = strchr (dot, '@');
+	  if (modifier == NULL)
+	    return dot;
+	  if (modifier - dot < sizeof (buf))
+	    {
+	      memcpy (buf, dot, modifier - dot);
+	      buf [modifier - dot] = '\0';
+	      return buf;
+	    }
+	}
+
+      /* Resolve through the charset.alias file.  */
+      codeset = locale;
+    }
+  else
+    {
+      /* OS/2 has a function returning the locale's codepage as a number.  */
+      if (DosQueryCp (sizeof (cp), cp, &cplen))
+	codeset = "";
+      else
+	{
+	  sprintf (buf, "CP%u", cp[0]);
+	  codeset = buf;
+	}
+    }
+
+#endif
+
+  if (codeset == NULL)
+    /* The canonical name cannot be determined.  */
+    codeset = "";
+
+  /* Resolve alias. */
+  for (aliases = get_charset_aliases ();
+       *aliases != '\0';
+       aliases += strlen (aliases) + 1, aliases += strlen (aliases) + 1)
+    if (strcmp (codeset, aliases) == 0
+	|| (aliases[0] == '*' && aliases[1] == '\0'))
+      {
+	codeset = aliases + strlen (aliases) + 1;
+	break;
+      }
+
+  return codeset;
+}
diff --git a/src/sed/intl/locale.alias b/src/sed/intl/locale.alias
new file mode 100644
index 0000000..213357b
--- /dev/null
+++ b/src/sed/intl/locale.alias
@@ -0,0 +1,78 @@
+# Locale name alias data base.
+# Copyright (C) 1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Library General Public License as published
+# by the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Library General Public License for more details.
+#
+# You should have received a copy of the GNU Library General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+# USA.
+
+# The format of this file is the same as for the corresponding file of
+# the X Window System, which normally can be found in
+#	/usr/lib/X11/locale/locale.alias
+# A single line contains two fields: an alias and a substitution value.
+# All entries are case independent.
+
+# Note: This file is far from being complete.  If you have a value for
+# your own site which you think might be useful for others too, share
+# it with the rest of us.  Send it using the `glibcbug' script to
+# bugs@gnu.org.
+
+# Packages using this file: 
+
+bokmal		no_NO.ISO-8859-1
+bokmål		no_NO.ISO-8859-1
+catalan		ca_ES.ISO-8859-1
+croatian	hr_HR.ISO-8859-2
+czech		cs_CZ.ISO-8859-2
+danish          da_DK.ISO-8859-1
+dansk		da_DK.ISO-8859-1
+deutsch		de_DE.ISO-8859-1
+dutch		nl_NL.ISO-8859-1
+eesti		et_EE.ISO-8859-1
+estonian	et_EE.ISO-8859-1
+finnish         fi_FI.ISO-8859-1
+français	fr_FR.ISO-8859-1
+french		fr_FR.ISO-8859-1
+galego		gl_ES.ISO-8859-1
+galician	gl_ES.ISO-8859-1
+german		de_DE.ISO-8859-1
+greek           el_GR.ISO-8859-7
+hebrew          he_IL.ISO-8859-8
+hrvatski	hr_HR.ISO-8859-2
+hungarian       hu_HU.ISO-8859-2
+icelandic       is_IS.ISO-8859-1
+italian         it_IT.ISO-8859-1
+japanese	ja_JP.eucJP
+japanese.euc	ja_JP.eucJP
+ja_JP		ja_JP.eucJP
+ja_JP.ujis	ja_JP.eucJP
+japanese.sjis	ja_JP.SJIS
+korean		ko_KR.eucKR
+korean.euc 	ko_KR.eucKR
+ko_KR		ko_KR.eucKR
+lithuanian      lt_LT.ISO-8859-13
+nb_NO		no_NO.ISO-8859-1
+nb_NO.ISO-8859-1 no_NO.ISO-8859-1
+norwegian       no_NO.ISO-8859-1
+nynorsk		nn_NO.ISO-8859-1
+polish          pl_PL.ISO-8859-2
+portuguese      pt_PT.ISO-8859-1
+romanian        ro_RO.ISO-8859-2
+russian         ru_RU.ISO-8859-5
+slovak          sk_SK.ISO-8859-2
+slovene         sl_SI.ISO-8859-2
+slovenian       sl_SI.ISO-8859-2
+spanish         es_ES.ISO-8859-1
+swedish         sv_SE.ISO-8859-1
+thai		th_TH.TIS-620
+turkish         tr_TR.ISO-8859-9
diff --git a/src/sed/intl/localealias.c b/src/sed/intl/localealias.c
new file mode 100644
index 0000000..68f1c0d
--- /dev/null
+++ b/src/sed/intl/localealias.c
@@ -0,0 +1,419 @@
+/* Handle aliases for locale names.
+   Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* Tell glibc's <string.h> to provide a prototype for mempcpy().
+   This must come before <config.h> because <config.h> may include
+   <features.h>, and once <features.h> has been included, it's too late.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE    1
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <ctype.h>
+#include <stdio.h>
+#if defined _LIBC || defined HAVE___FSETLOCKING
+# include <stdio_ext.h>
+#endif
+#include <sys/types.h>
+
+#ifdef __GNUC__
+# define alloca __builtin_alloca
+# define HAVE_ALLOCA 1
+#else
+# if defined HAVE_ALLOCA_H || defined _LIBC
+#  include <alloca.h>
+# else
+#  ifdef _AIX
+ #pragma alloca
+#  else
+#   ifndef alloca
+char *alloca ();
+#   endif
+#  endif
+# endif
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "gettextP.h"
+
+/* @@ end of prolog @@ */
+
+#ifdef _LIBC
+/* Rename the non ANSI C functions.  This is required by the standard
+   because some ANSI C functions will require linking with this object
+   file and the name space must not be polluted.  */
+# define strcasecmp __strcasecmp
+
+# ifndef mempcpy
+#  define mempcpy __mempcpy
+# endif
+# define HAVE_MEMPCPY	1
+# define HAVE___FSETLOCKING	1
+
+/* We need locking here since we can be called from different places.  */
+# include <bits/libc-lock.h>
+
+__libc_lock_define_initialized (static, lock);
+#endif
+
+#ifndef internal_function
+# define internal_function
+#endif
+
+/* Some optimizations for glibc.  */
+#ifdef _LIBC
+# define FEOF(fp)		feof_unlocked (fp)
+# define FGETS(buf, n, fp)	fgets_unlocked (buf, n, fp)
+#else
+# define FEOF(fp)		feof (fp)
+# define FGETS(buf, n, fp)	fgets (buf, n, fp)
+#endif
+
+/* For those losing systems which don't have `alloca' we have to add
+   some additional code emulating it.  */
+#ifdef HAVE_ALLOCA
+# define freea(p) /* nothing */
+#else
+# define alloca(n) malloc (n)
+# define freea(p) free (p)
+#endif
+
+#if defined _LIBC_REENTRANT || defined HAVE_FGETS_UNLOCKED
+# undef fgets
+# define fgets(buf, len, s) fgets_unlocked (buf, len, s)
+#endif
+#if defined _LIBC_REENTRANT || defined HAVE_FEOF_UNLOCKED
+# undef feof
+# define feof(s) feof_unlocked (s)
+#endif
+
+
+struct alias_map
+{
+  const char *alias;
+  const char *value;
+};
+
+
+static char *string_space;
+static size_t string_space_act;
+static size_t string_space_max;
+static struct alias_map *map;
+static size_t nmap;
+static size_t maxmap;
+
+
+/* Prototypes for local functions.  */
+static size_t read_alias_file PARAMS ((const char *fname, int fname_len))
+     internal_function;
+static int extend_alias_table PARAMS ((void));
+static int alias_compare PARAMS ((const struct alias_map *map1,
+				  const struct alias_map *map2));
+
+
+const char *
+_nl_expand_alias (name)
+    const char *name;
+{
+  static const char *locale_alias_path;
+  struct alias_map *retval;
+  const char *result = NULL;
+  size_t added;
+
+#ifdef _LIBC
+  __libc_lock_lock (lock);
+#endif
+
+  if (locale_alias_path == NULL)
+    locale_alias_path = LOCALE_ALIAS_PATH;
+
+  do
+    {
+      struct alias_map item;
+
+      item.alias = name;
+
+      if (nmap > 0)
+	retval = (struct alias_map *) bsearch (&item, map, nmap,
+					       sizeof (struct alias_map),
+					       (int (*) PARAMS ((const void *,
+								 const void *))
+						) alias_compare);
+      else
+	retval = NULL;
+
+      /* We really found an alias.  Return the value.  */
+      if (retval != NULL)
+	{
+	  result = retval->value;
+	  break;
+	}
+
+      /* Perhaps we can find another alias file.  */
+      added = 0;
+      while (added == 0 && locale_alias_path[0] != '\0')
+	{
+	  const char *start;
+
+	  while (locale_alias_path[0] == PATH_SEPARATOR)
+	    ++locale_alias_path;
+	  start = locale_alias_path;
+
+	  while (locale_alias_path[0] != '\0'
+		 && locale_alias_path[0] != PATH_SEPARATOR)
+	    ++locale_alias_path;
+
+	  if (start < locale_alias_path)
+	    added = read_alias_file (start, locale_alias_path - start);
+	}
+    }
+  while (added != 0);
+
+#ifdef _LIBC
+  __libc_lock_unlock (lock);
+#endif
+
+  return result;
+}
+
+
+static size_t
+internal_function
+read_alias_file (fname, fname_len)
+     const char *fname;
+     int fname_len;
+{
+  FILE *fp;
+  char *full_fname;
+  size_t added;
+  static const char aliasfile[] = "/locale.alias";
+
+  full_fname = (char *) alloca (fname_len + sizeof aliasfile);
+#ifdef HAVE_MEMPCPY
+  mempcpy (mempcpy (full_fname, fname, fname_len),
+	   aliasfile, sizeof aliasfile);
+#else
+  memcpy (full_fname, fname, fname_len);
+  memcpy (&full_fname[fname_len], aliasfile, sizeof aliasfile);
+#endif
+
+  fp = fopen (full_fname, "r");
+  freea (full_fname);
+  if (fp == NULL)
+    return 0;
+
+#ifdef HAVE___FSETLOCKING
+  /* No threads present.  */
+  __fsetlocking (fp, FSETLOCKING_BYCALLER);
+#endif
+
+  added = 0;
+  while (!FEOF (fp))
+    {
+      /* It is a reasonable approach to use a fix buffer here because
+	 a) we are only interested in the first two fields
+	 b) these fields must be usable as file names and so must not
+	    be that long
+       */
+      char buf[BUFSIZ];
+      char *alias;
+      char *value;
+      char *cp;
+
+      if (FGETS (buf, sizeof buf, fp) == NULL)
+	/* EOF reached.  */
+	break;
+
+      /* Possibly not the whole line fits into the buffer.  Ignore
+	 the rest of the line.  */
+      if (strchr (buf, '\n') == NULL)
+	{
+	  char altbuf[BUFSIZ];
+	  do
+	    if (FGETS (altbuf, sizeof altbuf, fp) == NULL)
+	      /* Make sure the inner loop will be left.  The outer loop
+		 will exit at the `feof' test.  */
+	      break;
+	  while (strchr (altbuf, '\n') == NULL);
+	}
+
+      cp = buf;
+      /* Ignore leading white space.  */
+      while (isspace ((unsigned char) cp[0]))
+	++cp;
+
+      /* A leading '#' signals a comment line.  */
+      if (cp[0] != '\0' && cp[0] != '#')
+	{
+	  alias = cp++;
+	  while (cp[0] != '\0' && !isspace ((unsigned char) cp[0]))
+	    ++cp;
+	  /* Terminate alias name.  */
+	  if (cp[0] != '\0')
+	    *cp++ = '\0';
+
+	  /* Now look for the beginning of the value.  */
+	  while (isspace ((unsigned char) cp[0]))
+	    ++cp;
+
+	  if (cp[0] != '\0')
+	    {
+	      size_t alias_len;
+	      size_t value_len;
+
+	      value = cp++;
+	      while (cp[0] != '\0' && !isspace ((unsigned char) cp[0]))
+		++cp;
+	      /* Terminate value.  */
+	      if (cp[0] == '\n')
+		{
+		  /* This has to be done to make the following test
+		     for the end of line possible.  We are looking for
+		     the terminating '\n' which do not overwrite here.  */
+		  *cp++ = '\0';
+		  *cp = '\n';
+		}
+	      else if (cp[0] != '\0')
+		*cp++ = '\0';
+
+	      if (nmap >= maxmap)
+		if (__builtin_expect (extend_alias_table (), 0))
+		  return added;
+
+	      alias_len = strlen (alias) + 1;
+	      value_len = strlen (value) + 1;
+
+	      if (string_space_act + alias_len + value_len > string_space_max)
+		{
+		  /* Increase size of memory pool.  */
+		  size_t new_size = (string_space_max
+				     + (alias_len + value_len > 1024
+					? alias_len + value_len : 1024));
+		  char *new_pool = (char *) realloc (string_space, new_size);
+		  if (new_pool == NULL)
+		    return added;
+
+		  if (__builtin_expect (string_space != new_pool, 0))
+		    {
+		      size_t i;
+
+		      for (i = 0; i < nmap; i++)
+			{
+			  map[i].alias += new_pool - string_space;
+			  map[i].value += new_pool - string_space;
+			}
+		    }
+
+		  string_space = new_pool;
+		  string_space_max = new_size;
+		}
+
+	      map[nmap].alias = memcpy (&string_space[string_space_act],
+					alias, alias_len);
+	      string_space_act += alias_len;
+
+	      map[nmap].value = memcpy (&string_space[string_space_act],
+					value, value_len);
+	      string_space_act += value_len;
+
+	      ++nmap;
+	      ++added;
+	    }
+	}
+    }
+
+  /* Should we test for ferror()?  I think we have to silently ignore
+     errors.  --drepper  */
+  fclose (fp);
+
+  if (added > 0)
+    qsort (map, nmap, sizeof (struct alias_map),
+	   (int (*) PARAMS ((const void *, const void *))) alias_compare);
+
+  return added;
+}
+
+
+static int
+extend_alias_table ()
+{
+  size_t new_size;
+  struct alias_map *new_map;
+
+  new_size = maxmap == 0 ? 100 : 2 * maxmap;
+  new_map = (struct alias_map *) realloc (map, (new_size
+						* sizeof (struct alias_map)));
+  if (new_map == NULL)
+    /* Simply don't extend: we don't have any more core.  */
+    return -1;
+
+  map = new_map;
+  maxmap = new_size;
+  return 0;
+}
+
+
+#ifdef _LIBC
+static void __attribute__ ((unused))
+free_mem (void)
+{
+  if (string_space != NULL)
+    free (string_space);
+  if (map != NULL)
+    free (map);
+}
+text_set_element (__libc_subfreeres, free_mem);
+#endif
+
+
+static int
+alias_compare (map1, map2)
+     const struct alias_map *map1;
+     const struct alias_map *map2;
+{
+#if defined _LIBC || defined HAVE_STRCASECMP
+  return strcasecmp (map1->alias, map2->alias);
+#else
+  const unsigned char *p1 = (const unsigned char *) map1->alias;
+  const unsigned char *p2 = (const unsigned char *) map2->alias;
+  unsigned char c1, c2;
+
+  if (p1 == p2)
+    return 0;
+
+  do
+    {
+      /* I know this seems to be odd but the tolower() function in
+	 some systems libc cannot handle nonalpha characters.  */
+      c1 = isupper (*p1) ? tolower (*p1) : *p1;
+      c2 = isupper (*p2) ? tolower (*p2) : *p2;
+      if (c1 == '\0')
+	break;
+      ++p1;
+      ++p2;
+    }
+  while (c1 == c2);
+
+  return c1 - c2;
+#endif
+}
diff --git a/src/sed/intl/localename.c b/src/sed/intl/localename.c
new file mode 100644
index 0000000..87203cf
--- /dev/null
+++ b/src/sed/intl/localename.c
@@ -0,0 +1,696 @@
+/* Determine the current selected locale.
+   Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+/* Written by Ulrich Drepper <drepper@gnu.org>, 1995.  */
+/* Win32 code written by Tor Lillqvist <tml@iki.fi>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <locale.h>
+
+#if defined _WIN32 || defined __WIN32__
+# undef WIN32   /* avoid warning on mingw32 */
+# define WIN32
+#endif
+
+#ifdef WIN32
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Mingw headers don't have latest language and sublanguage codes.  */
+# ifndef LANG_AFRIKAANS
+# define LANG_AFRIKAANS 0x36
+# endif
+# ifndef LANG_ALBANIAN
+# define LANG_ALBANIAN 0x1c
+# endif
+# ifndef LANG_ARABIC
+# define LANG_ARABIC 0x01
+# endif
+# ifndef LANG_ARMENIAN
+# define LANG_ARMENIAN 0x2b
+# endif
+# ifndef LANG_ASSAMESE
+# define LANG_ASSAMESE 0x4d
+# endif
+# ifndef LANG_AZERI
+# define LANG_AZERI 0x2c
+# endif
+# ifndef LANG_BASQUE
+# define LANG_BASQUE 0x2d
+# endif
+# ifndef LANG_BELARUSIAN
+# define LANG_BELARUSIAN 0x23
+# endif
+# ifndef LANG_BENGALI
+# define LANG_BENGALI 0x45
+# endif
+# ifndef LANG_CATALAN
+# define LANG_CATALAN 0x03
+# endif
+# ifndef LANG_ESTONIAN
+# define LANG_ESTONIAN 0x25
+# endif
+# ifndef LANG_FAEROESE
+# define LANG_FAEROESE 0x38
+# endif
+# ifndef LANG_FARSI
+# define LANG_FARSI 0x29
+# endif
+# ifndef LANG_GEORGIAN
+# define LANG_GEORGIAN 0x37
+# endif
+# ifndef LANG_GUJARATI
+# define LANG_GUJARATI 0x47
+# endif
+# ifndef LANG_HEBREW
+# define LANG_HEBREW 0x0d
+# endif
+# ifndef LANG_HINDI
+# define LANG_HINDI 0x39
+# endif
+# ifndef LANG_INDONESIAN
+# define LANG_INDONESIAN 0x21
+# endif
+# ifndef LANG_KANNADA
+# define LANG_KANNADA 0x4b
+# endif
+# ifndef LANG_KASHMIRI
+# define LANG_KASHMIRI 0x60
+# endif
+# ifndef LANG_KAZAK
+# define LANG_KAZAK 0x3f
+# endif
+# ifndef LANG_KONKANI
+# define LANG_KONKANI 0x57
+# endif
+# ifndef LANG_LATVIAN
+# define LANG_LATVIAN 0x26
+# endif
+# ifndef LANG_LITHUANIAN
+# define LANG_LITHUANIAN 0x27
+# endif
+# ifndef LANG_MACEDONIAN
+# define LANG_MACEDONIAN 0x2f
+# endif
+# ifndef LANG_MALAY
+# define LANG_MALAY 0x3e
+# endif
+# ifndef LANG_MALAYALAM
+# define LANG_MALAYALAM 0x4c
+# endif
+# ifndef LANG_MANIPURI
+# define LANG_MANIPURI 0x58
+# endif
+# ifndef LANG_MARATHI
+# define LANG_MARATHI 0x4e
+# endif
+# ifndef LANG_NEPALI
+# define LANG_NEPALI 0x61
+# endif
+# ifndef LANG_ORIYA
+# define LANG_ORIYA 0x48
+# endif
+# ifndef LANG_PUNJABI
+# define LANG_PUNJABI 0x46
+# endif
+# ifndef LANG_SANSKRIT
+# define LANG_SANSKRIT 0x4f
+# endif
+# ifndef LANG_SERBIAN
+# define LANG_SERBIAN 0x1a
+# endif
+# ifndef LANG_SINDHI
+# define LANG_SINDHI 0x59
+# endif
+# ifndef LANG_SLOVAK
+# define LANG_SLOVAK 0x1b
+# endif
+# ifndef LANG_SWAHILI
+# define LANG_SWAHILI 0x41
+# endif
+# ifndef LANG_SORBIAN
+# define LANG_SORBIAN 0x2e
+# endif
+# ifndef LANG_TAMIL
+# define LANG_TAMIL 0x49
+# endif
+# ifndef LANG_TATAR
+# define LANG_TATAR 0x44
+# endif
+# ifndef LANG_TELUGU
+# define LANG_TELUGU 0x4a
+# endif
+# ifndef LANG_THAI
+# define LANG_THAI 0x1e
+# endif
+# ifndef LANG_UKRAINIAN
+# define LANG_UKRAINIAN 0x22
+# endif
+# ifndef LANG_URDU
+# define LANG_URDU 0x20
+# endif
+# ifndef LANG_UZBEK
+# define LANG_UZBEK 0x43
+# endif
+# ifndef LANG_VIETNAMESE
+# define LANG_VIETNAMESE 0x2a
+# endif
+# ifndef SUBLANG_ARABIC_SAUDI_ARABIA
+# define SUBLANG_ARABIC_SAUDI_ARABIA 0x01
+# endif
+# ifndef SUBLANG_ARABIC_IRAQ
+# define SUBLANG_ARABIC_IRAQ 0x02
+# endif
+# ifndef SUBLANG_ARABIC_EGYPT
+# define SUBLANG_ARABIC_EGYPT 0x03
+# endif
+# ifndef SUBLANG_ARABIC_LIBYA
+# define SUBLANG_ARABIC_LIBYA 0x04
+# endif
+# ifndef SUBLANG_ARABIC_ALGERIA
+# define SUBLANG_ARABIC_ALGERIA 0x05
+# endif
+# ifndef SUBLANG_ARABIC_MOROCCO
+# define SUBLANG_ARABIC_MOROCCO 0x06
+# endif
+# ifndef SUBLANG_ARABIC_TUNISIA
+# define SUBLANG_ARABIC_TUNISIA 0x07
+# endif
+# ifndef SUBLANG_ARABIC_OMAN
+# define SUBLANG_ARABIC_OMAN 0x08
+# endif
+# ifndef SUBLANG_ARABIC_YEMEN
+# define SUBLANG_ARABIC_YEMEN 0x09
+# endif
+# ifndef SUBLANG_ARABIC_SYRIA
+# define SUBLANG_ARABIC_SYRIA 0x0a
+# endif
+# ifndef SUBLANG_ARABIC_JORDAN
+# define SUBLANG_ARABIC_JORDAN 0x0b
+# endif
+# ifndef SUBLANG_ARABIC_LEBANON
+# define SUBLANG_ARABIC_LEBANON 0x0c
+# endif
+# ifndef SUBLANG_ARABIC_KUWAIT
+# define SUBLANG_ARABIC_KUWAIT 0x0d
+# endif
+# ifndef SUBLANG_ARABIC_UAE
+# define SUBLANG_ARABIC_UAE 0x0e
+# endif
+# ifndef SUBLANG_ARABIC_BAHRAIN
+# define SUBLANG_ARABIC_BAHRAIN 0x0f
+# endif
+# ifndef SUBLANG_ARABIC_QATAR
+# define SUBLANG_ARABIC_QATAR 0x10
+# endif
+# ifndef SUBLANG_AZERI_LATIN
+# define SUBLANG_AZERI_LATIN 0x01
+# endif
+# ifndef SUBLANG_AZERI_CYRILLIC
+# define SUBLANG_AZERI_CYRILLIC 0x02
+# endif
+# ifndef SUBLANG_CHINESE_MACAU
+# define SUBLANG_CHINESE_MACAU 0x05
+# endif
+# ifndef SUBLANG_ENGLISH_SOUTH_AFRICA
+# define SUBLANG_ENGLISH_SOUTH_AFRICA 0x07
+# endif
+# ifndef SUBLANG_ENGLISH_JAMAICA
+# define SUBLANG_ENGLISH_JAMAICA 0x08
+# endif
+# ifndef SUBLANG_ENGLISH_CARIBBEAN
+# define SUBLANG_ENGLISH_CARIBBEAN 0x09
+# endif
+# ifndef SUBLANG_ENGLISH_BELIZE
+# define SUBLANG_ENGLISH_BELIZE 0x0a
+# endif
+# ifndef SUBLANG_ENGLISH_TRINIDAD
+# define SUBLANG_ENGLISH_TRINIDAD 0x0b
+# endif
+# ifndef SUBLANG_ENGLISH_ZIMBABWE
+# define SUBLANG_ENGLISH_ZIMBABWE 0x0c
+# endif
+# ifndef SUBLANG_ENGLISH_PHILIPPINES
+# define SUBLANG_ENGLISH_PHILIPPINES 0x0d
+# endif
+# ifndef SUBLANG_FRENCH_LUXEMBOURG
+# define SUBLANG_FRENCH_LUXEMBOURG 0x05
+# endif
+# ifndef SUBLANG_FRENCH_MONACO
+# define SUBLANG_FRENCH_MONACO 0x06
+# endif
+# ifndef SUBLANG_GERMAN_LUXEMBOURG
+# define SUBLANG_GERMAN_LUXEMBOURG 0x04
+# endif
+# ifndef SUBLANG_GERMAN_LIECHTENSTEIN
+# define SUBLANG_GERMAN_LIECHTENSTEIN 0x05
+# endif
+# ifndef SUBLANG_KASHMIRI_INDIA
+# define SUBLANG_KASHMIRI_INDIA 0x02
+# endif
+# ifndef SUBLANG_MALAY_MALAYSIA
+# define SUBLANG_MALAY_MALAYSIA 0x01
+# endif
+# ifndef SUBLANG_MALAY_BRUNEI_DARUSSALAM
+# define SUBLANG_MALAY_BRUNEI_DARUSSALAM 0x02
+# endif
+# ifndef SUBLANG_NEPALI_INDIA
+# define SUBLANG_NEPALI_INDIA 0x02
+# endif
+# ifndef SUBLANG_SERBIAN_LATIN
+# define SUBLANG_SERBIAN_LATIN 0x02
+# endif
+# ifndef SUBLANG_SERBIAN_CYRILLIC
+# define SUBLANG_SERBIAN_CYRILLIC 0x03
+# endif
+# ifndef SUBLANG_SPANISH_GUATEMALA
+# define SUBLANG_SPANISH_GUATEMALA 0x04
+# endif
+# ifndef SUBLANG_SPANISH_COSTA_RICA
+# define SUBLANG_SPANISH_COSTA_RICA 0x05
+# endif
+# ifndef SUBLANG_SPANISH_PANAMA
+# define SUBLANG_SPANISH_PANAMA 0x06
+# endif
+# ifndef SUBLANG_SPANISH_DOMINICAN_REPUBLIC
+# define SUBLANG_SPANISH_DOMINICAN_REPUBLIC 0x07
+# endif
+# ifndef SUBLANG_SPANISH_VENEZUELA
+# define SUBLANG_SPANISH_VENEZUELA 0x08
+# endif
+# ifndef SUBLANG_SPANISH_COLOMBIA
+# define SUBLANG_SPANISH_COLOMBIA 0x09
+# endif
+# ifndef SUBLANG_SPANISH_PERU
+# define SUBLANG_SPANISH_PERU 0x0a
+# endif
+# ifndef SUBLANG_SPANISH_ARGENTINA
+# define SUBLANG_SPANISH_ARGENTINA 0x0b
+# endif
+# ifndef SUBLANG_SPANISH_ECUADOR
+# define SUBLANG_SPANISH_ECUADOR 0x0c
+# endif
+# ifndef SUBLANG_SPANISH_CHILE
+# define SUBLANG_SPANISH_CHILE 0x0d
+# endif
+# ifndef SUBLANG_SPANISH_URUGUAY
+# define SUBLANG_SPANISH_URUGUAY 0x0e
+# endif
+# ifndef SUBLANG_SPANISH_PARAGUAY
+# define SUBLANG_SPANISH_PARAGUAY 0x0f
+# endif
+# ifndef SUBLANG_SPANISH_BOLIVIA
+# define SUBLANG_SPANISH_BOLIVIA 0x10
+# endif
+# ifndef SUBLANG_SPANISH_EL_SALVADOR
+# define SUBLANG_SPANISH_EL_SALVADOR 0x11
+# endif
+# ifndef SUBLANG_SPANISH_HONDURAS
+# define SUBLANG_SPANISH_HONDURAS 0x12
+# endif
+# ifndef SUBLANG_SPANISH_NICARAGUA
+# define SUBLANG_SPANISH_NICARAGUA 0x13
+# endif
+# ifndef SUBLANG_SPANISH_PUERTO_RICO
+# define SUBLANG_SPANISH_PUERTO_RICO 0x14
+# endif
+# ifndef SUBLANG_SWEDISH_FINLAND
+# define SUBLANG_SWEDISH_FINLAND 0x02
+# endif
+# ifndef SUBLANG_URDU_PAKISTAN
+# define SUBLANG_URDU_PAKISTAN 0x01
+# endif
+# ifndef SUBLANG_URDU_INDIA
+# define SUBLANG_URDU_INDIA 0x02
+# endif
+# ifndef SUBLANG_UZBEK_LATIN
+# define SUBLANG_UZBEK_LATIN 0x01
+# endif
+# ifndef SUBLANG_UZBEK_CYRILLIC
+# define SUBLANG_UZBEK_CYRILLIC 0x02
+# endif
+#endif
+
+/* XPG3 defines the result of 'setlocale (category, NULL)' as:
+   "Directs 'setlocale()' to query 'category' and return the current
+    setting of 'local'."
+   However it does not specify the exact format.  Neither do SUSV2 and
+   ISO C 99.  So we can use this feature only on selected systems (e.g.
+   those using GNU C Library).  */
+#if defined _LIBC || (defined __GNU_LIBRARY__ && __GNU_LIBRARY__ >= 2)
+# define HAVE_LOCALE_NULL
+#endif
+
+/* Determine the current locale's name, and canonicalize it into XPG syntax
+     language[_territory[.codeset]][@modifier]
+   The codeset part in the result is not reliable; the locale_charset()
+   should be used for codeset information instead.
+   The result must not be freed; it is statically allocated.  */
+
+const char *
+_nl_locale_name (category, categoryname)
+     int category;
+     const char *categoryname;
+{
+  const char *retval;
+
+#ifndef WIN32
+
+  /* Use the POSIX methods of looking to 'LC_ALL', 'LC_xxx', and 'LANG'.
+     On some systems this can be done by the 'setlocale' function itself.  */
+# if defined HAVE_SETLOCALE && defined HAVE_LC_MESSAGES && defined HAVE_LOCALE_NULL
+  retval = setlocale (category, NULL);
+# else
+  /* Setting of LC_ALL overwrites all other.  */
+  retval = getenv ("LC_ALL");
+  if (retval == NULL || retval[0] == '\0')
+    {
+      /* Next comes the name of the desired category.  */
+      retval = getenv (categoryname);
+      if (retval == NULL || retval[0] == '\0')
+	{
+	  /* Last possibility is the LANG environment variable.  */
+	  retval = getenv ("LANG");
+	  if (retval == NULL || retval[0] == '\0')
+	    /* We use C as the default domain.  POSIX says this is
+	       implementation defined.  */
+	    retval = "C";
+	}
+    }
+# endif
+
+  return retval;
+
+#else /* WIN32 */
+
+  /* Return an XPG style locale name language[_territory][@modifier].
+     Don't even bother determining the codeset; it's not useful in this
+     context, because message catalogs are not specific to a single
+     codeset.  */
+
+  LCID lcid;
+  LANGID langid;
+  int primary, sub;
+
+  /* Let the user override the system settings through environment
+     variables, as on POSIX systems.  */
+  retval = getenv ("LC_ALL");
+  if (retval != NULL && retval[0] != '\0')
+    return retval;
+  retval = getenv (categoryname);
+  if (retval != NULL && retval[0] != '\0')
+    return retval;
+  retval = getenv ("LANG");
+  if (retval != NULL && retval[0] != '\0')
+    return retval;
+
+  /* Use native Win32 API locale ID.  */
+  lcid = GetThreadLocale ();
+
+  /* Strip off the sorting rules, keep only the language part.  */
+  langid = LANGIDFROMLCID (lcid);
+
+  /* Split into language and territory part.  */
+  primary = PRIMARYLANGID (langid);
+  sub = SUBLANGID (langid);
+  switch (primary)
+    {
+    case LANG_AFRIKAANS: return "af_ZA";
+    case LANG_ALBANIAN: return "sq_AL";
+    case LANG_ARABIC:
+      switch (sub)
+	{
+	case SUBLANG_ARABIC_SAUDI_ARABIA: return "ar_SA";
+	case SUBLANG_ARABIC_IRAQ: return "ar_IQ";
+	case SUBLANG_ARABIC_EGYPT: return "ar_EG";
+	case SUBLANG_ARABIC_LIBYA: return "ar_LY";
+	case SUBLANG_ARABIC_ALGERIA: return "ar_DZ";
+	case SUBLANG_ARABIC_MOROCCO: return "ar_MA";
+	case SUBLANG_ARABIC_TUNISIA: return "ar_TN";
+	case SUBLANG_ARABIC_OMAN: return "ar_OM";
+	case SUBLANG_ARABIC_YEMEN: return "ar_YE";
+	case SUBLANG_ARABIC_SYRIA: return "ar_SY";
+	case SUBLANG_ARABIC_JORDAN: return "ar_JO";
+	case SUBLANG_ARABIC_LEBANON: return "ar_LB";
+	case SUBLANG_ARABIC_KUWAIT: return "ar_KW";
+	case SUBLANG_ARABIC_UAE: return "ar_AE";
+	case SUBLANG_ARABIC_BAHRAIN: return "ar_BH";
+	case SUBLANG_ARABIC_QATAR: return "ar_QA";
+	}
+      return "ar";
+    case LANG_ARMENIAN: return "hy_AM";
+    case LANG_ASSAMESE: return "as_IN";
+    case LANG_AZERI:
+      switch (sub)
+	{
+	/* FIXME: Adjust this when Azerbaijani locales appear on Unix.  */
+	case SUBLANG_AZERI_LATIN: return "az_AZ@latin";
+	case SUBLANG_AZERI_CYRILLIC: return "az_AZ@cyrillic";
+	}
+      return "az";
+    case LANG_BASQUE:
+      return "eu"; /* Ambiguous: could be "eu_ES" or "eu_FR".  */
+    case LANG_BELARUSIAN: return "be_BY";
+    case LANG_BENGALI: return "bn_IN";
+    case LANG_BULGARIAN: return "bg_BG";
+    case LANG_CATALAN: return "ca_ES";
+    case LANG_CHINESE:
+      switch (sub)
+	{
+	case SUBLANG_CHINESE_TRADITIONAL: return "zh_TW";
+	case SUBLANG_CHINESE_SIMPLIFIED: return "zh_CN";
+	case SUBLANG_CHINESE_HONGKONG: return "zh_HK";
+	case SUBLANG_CHINESE_SINGAPORE: return "zh_SG";
+	case SUBLANG_CHINESE_MACAU: return "zh_MO";
+	}
+      return "zh";
+    case LANG_CROATIAN:		/* LANG_CROATIAN == LANG_SERBIAN
+				 * What used to be called Serbo-Croatian
+				 * should really now be two separate
+				 * languages because of political reasons.
+				 * (Says tml, who knows nothing about Serbian
+				 * or Croatian.)
+				 * (I can feel those flames coming already.)
+				 */
+      switch (sub)
+	{
+	/* FIXME: How to distinguish Croatian and Latin Serbian locales?  */
+	case SUBLANG_SERBIAN_LATIN: return "sr_YU";
+	case SUBLANG_SERBIAN_CYRILLIC: return "sr_YU@cyrillic";
+	default: return "hr_HR";
+	}
+    case LANG_CZECH: return "cs_CZ";
+    case LANG_DANISH: return "da_DK";
+    case LANG_DUTCH:
+      switch (sub)
+	{
+	case SUBLANG_DUTCH: return "nl_NL";
+	case SUBLANG_DUTCH_BELGIAN: return "nl_BE";
+	}
+      return "nl";
+    case LANG_ENGLISH:
+      switch (sub)
+	{
+	/* SUBLANG_ENGLISH_US == SUBLANG_DEFAULT. Heh. I thought
+	 * English was the language spoken in England.
+	 * Oh well.
+	 */
+	case SUBLANG_ENGLISH_US: return "en_US";
+	case SUBLANG_ENGLISH_UK: return "en_GB";
+	case SUBLANG_ENGLISH_AUS: return "en_AU";
+	case SUBLANG_ENGLISH_CAN: return "en_CA";
+	case SUBLANG_ENGLISH_NZ: return "en_NZ";
+	case SUBLANG_ENGLISH_EIRE: return "en_IE";
+	case SUBLANG_ENGLISH_SOUTH_AFRICA: return "en_ZA";
+	case SUBLANG_ENGLISH_JAMAICA: return "en_JM";
+	case SUBLANG_ENGLISH_CARIBBEAN: return "en_GD"; /* Grenada? */
+	case SUBLANG_ENGLISH_BELIZE: return "en_BZ";
+	case SUBLANG_ENGLISH_TRINIDAD: return "en_TT";
+	case SUBLANG_ENGLISH_ZIMBABWE: return "en_ZW";
+	case SUBLANG_ENGLISH_PHILIPPINES: return "en_PH";
+	}
+      return "en";
+    case LANG_ESTONIAN: return "et_EE";
+    case LANG_FAEROESE: return "fo_FO";
+    case LANG_FARSI: return "fa_IR";
+    case LANG_FINNISH: return "fi_FI";
+    case LANG_FRENCH:
+      switch (sub)
+	{
+	case SUBLANG_FRENCH: return "fr_FR";
+	case SUBLANG_FRENCH_BELGIAN: return "fr_BE";
+	case SUBLANG_FRENCH_CANADIAN: return "fr_CA";
+	case SUBLANG_FRENCH_SWISS: return "fr_CH";
+	case SUBLANG_FRENCH_LUXEMBOURG: return "fr_LU";
+	case SUBLANG_FRENCH_MONACO: return "fr_MC";
+	}
+      return "fr";
+    case LANG_GEORGIAN: return "ka_GE";
+    case LANG_GERMAN:
+      switch (sub)
+	{
+	case SUBLANG_GERMAN: return "de_DE";
+	case SUBLANG_GERMAN_SWISS: return "de_CH";
+	case SUBLANG_GERMAN_AUSTRIAN: return "de_AT";
+	case SUBLANG_GERMAN_LUXEMBOURG: return "de_LU";
+	case SUBLANG_GERMAN_LIECHTENSTEIN: return "de_LI";
+	}
+      return "de";
+    case LANG_GREEK: return "el_GR";
+    case LANG_GUJARATI: return "gu_IN";
+    case LANG_HEBREW: return "he_IL";
+    case LANG_HINDI: return "hi_IN";
+    case LANG_HUNGARIAN: return "hu_HU";
+    case LANG_ICELANDIC: return "is_IS";
+    case LANG_INDONESIAN: return "id_ID";
+    case LANG_ITALIAN:
+      switch (sub)
+	{
+	case SUBLANG_ITALIAN: return "it_IT";
+	case SUBLANG_ITALIAN_SWISS: return "it_CH";
+	}
+      return "it";
+    case LANG_JAPANESE: return "ja_JP";
+    case LANG_KANNADA: return "kn_IN";
+    case LANG_KASHMIRI:
+      switch (sub)
+	{
+	case SUBLANG_DEFAULT: return "ks_PK";
+	case SUBLANG_KASHMIRI_INDIA: return "ks_IN";
+	}
+      return "ks";
+    case LANG_KAZAK: return "kk_KZ";
+    case LANG_KONKANI:
+      /* FIXME: Adjust this when such locales appear on Unix.  */
+      return "kok_IN";
+    case LANG_KOREAN: return "ko_KR";
+    case LANG_LATVIAN: return "lv_LV";
+    case LANG_LITHUANIAN: return "lt_LT";
+    case LANG_MACEDONIAN: return "mk_MK";
+    case LANG_MALAY:
+      switch (sub)
+	{
+	case SUBLANG_MALAY_MALAYSIA: return "ms_MY";
+	case SUBLANG_MALAY_BRUNEI_DARUSSALAM: return "ms_BN";
+	}
+      return "ms";
+    case LANG_MALAYALAM: return "ml_IN";
+    case LANG_MANIPURI:
+      /* FIXME: Adjust this when such locales appear on Unix.  */
+      return "mni_IN";
+    case LANG_MARATHI: return "mr_IN";
+    case LANG_NEPALI:
+      switch (sub)
+	{
+	case SUBLANG_DEFAULT: return "ne_NP";
+	case SUBLANG_NEPALI_INDIA: return "ne_IN";
+	}
+      return "ne";
+    case LANG_NORWEGIAN:
+      switch (sub)
+	{
+	case SUBLANG_NORWEGIAN_BOKMAL: return "no_NO";
+	case SUBLANG_NORWEGIAN_NYNORSK: return "nn_NO";
+	}
+      return "no";
+    case LANG_ORIYA: return "or_IN";
+    case LANG_POLISH: return "pl_PL";
+    case LANG_PORTUGUESE:
+      switch (sub)
+	{
+	case SUBLANG_PORTUGUESE: return "pt_PT";
+	/* Hmm. SUBLANG_PORTUGUESE_BRAZILIAN == SUBLANG_DEFAULT.
+	   Same phenomenon as SUBLANG_ENGLISH_US == SUBLANG_DEFAULT. */
+	case SUBLANG_PORTUGUESE_BRAZILIAN: return "pt_BR";
+	}
+      return "pt";
+    case LANG_PUNJABI: return "pa_IN";
+    case LANG_ROMANIAN: return "ro_RO";
+    case LANG_RUSSIAN:
+      return "ru"; /* Ambiguous: could be "ru_RU" or "ru_UA".  */
+    case LANG_SANSKRIT: return "sa_IN";
+    case LANG_SINDHI: return "sd";
+    case LANG_SLOVAK: return "sk_SK";
+    case LANG_SLOVENIAN: return "sl_SI";
+    case LANG_SORBIAN:
+      /* FIXME: Adjust this when such locales appear on Unix.  */
+      return "wen_DE";
+    case LANG_SPANISH:
+      switch (sub)
+	{
+	case SUBLANG_SPANISH: return "es_ES";
+	case SUBLANG_SPANISH_MEXICAN: return "es_MX";
+	case SUBLANG_SPANISH_MODERN:
+	  return "es_ES@modern";	/* not seen on Unix */
+	case SUBLANG_SPANISH_GUATEMALA: return "es_GT";
+	case SUBLANG_SPANISH_COSTA_RICA: return "es_CR";
+	case SUBLANG_SPANISH_PANAMA: return "es_PA";
+	case SUBLANG_SPANISH_DOMINICAN_REPUBLIC: return "es_DO";
+	case SUBLANG_SPANISH_VENEZUELA: return "es_VE";
+	case SUBLANG_SPANISH_COLOMBIA: return "es_CO";
+	case SUBLANG_SPANISH_PERU: return "es_PE";
+	case SUBLANG_SPANISH_ARGENTINA: return "es_AR";
+	case SUBLANG_SPANISH_ECUADOR: return "es_EC";
+	case SUBLANG_SPANISH_CHILE: return "es_CL";
+	case SUBLANG_SPANISH_URUGUAY: return "es_UY";
+	case SUBLANG_SPANISH_PARAGUAY: return "es_PY";
+	case SUBLANG_SPANISH_BOLIVIA: return "es_BO";
+	case SUBLANG_SPANISH_EL_SALVADOR: return "es_SV";
+	case SUBLANG_SPANISH_HONDURAS: return "es_HN";
+	case SUBLANG_SPANISH_NICARAGUA: return "es_NI";
+	case SUBLANG_SPANISH_PUERTO_RICO: return "es_PR";
+	}
+      return "es";
+    case LANG_SWAHILI: return "sw";
+    case LANG_SWEDISH:
+      switch (sub)
+	{
+	case SUBLANG_DEFAULT: return "sv_SE";
+	case SUBLANG_SWEDISH_FINLAND: return "sv_FI";
+	}
+      return "sv";
+    case LANG_TAMIL:
+      return "ta"; /* Ambiguous: could be "ta_IN" or "ta_LK" or "ta_SG".  */
+    case LANG_TATAR: return "tt";
+    case LANG_TELUGU: return "te_IN";
+    case LANG_THAI: return "th_TH";
+    case LANG_TURKISH: return "tr_TR";
+    case LANG_UKRAINIAN: return "uk_UA";
+    case LANG_URDU:
+      switch (sub)
+	{
+	case SUBLANG_URDU_PAKISTAN: return "ur_PK";
+	case SUBLANG_URDU_INDIA: return "ur_IN";
+	}
+      return "ur";
+    case LANG_UZBEK:
+      switch (sub)
+	{
+	/* FIXME: Adjust this when Uzbek locales appear on Unix.  */
+	case SUBLANG_UZBEK_LATIN: return "uz_UZ@latin";
+	case SUBLANG_UZBEK_CYRILLIC: return "uz_UZ@cyrillic";
+	}
+      return "uz";
+    case LANG_VIETNAMESE: return "vi_VN";
+    default: return "C";
+    }
+
+#endif
+}
diff --git a/src/sed/intl/ngettext.c b/src/sed/intl/ngettext.c
new file mode 100644
index 0000000..afea335
--- /dev/null
+++ b/src/sed/intl/ngettext.c
@@ -0,0 +1,68 @@
+/* Implementation of ngettext(3) function.
+   Copyright (C) 1995, 1997, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef _LIBC
+# define __need_NULL
+# include <stddef.h>
+#else
+# include <stdlib.h>		/* Just for NULL.  */
+#endif
+
+#include "gettextP.h"
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgnuintl.h"
+#endif
+
+#include <locale.h>
+
+/* @@ end of prolog @@ */
+
+/* Names for the libintl functions are a problem.  They must not clash
+   with existing names and they should follow ANSI C.  But this source
+   code is also used in GNU C Library where the names have a __
+   prefix.  So we have to make a difference here.  */
+#ifdef _LIBC
+# define NGETTEXT __ngettext
+# define DCNGETTEXT __dcngettext
+#else
+# define NGETTEXT ngettext__
+# define DCNGETTEXT dcngettext__
+#endif
+
+/* Look up MSGID in the current default message catalog for the current
+   LC_MESSAGES locale.  If not found, returns MSGID itself (the default
+   text).  */
+char *
+NGETTEXT (msgid1, msgid2, n)
+     const char *msgid1;
+     const char *msgid2;
+     unsigned long int n;
+{
+  return DCNGETTEXT (NULL, msgid1, msgid2, n, LC_MESSAGES);
+}
+
+#ifdef _LIBC
+/* Alias for function name in GNU C Library.  */
+weak_alias (__ngettext, ngettext);
+#endif
diff --git a/src/sed/intl/os2compat.c b/src/sed/intl/os2compat.c
new file mode 100644
index 0000000..3c77d73
--- /dev/null
+++ b/src/sed/intl/os2compat.c
@@ -0,0 +1,109 @@
+/* OS/2 compatibility functions.
+   Copyright (C) 2001-2002 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#define OS2_AWARE
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+/* A version of getenv() that works from DLLs */
+extern unsigned long DosScanEnv (const unsigned char *pszName, unsigned char **ppszValue);
+
+char *
+_nl_getenv (const char *name)
+{
+  unsigned char *value;
+  if (DosScanEnv (name, &value))
+    return NULL;
+  else
+    return value;
+}
+
+char _nl_default_dirname[] =	/* a 260+1 bytes large buffer */
+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+  "\0\0\0\0"
+#define LOCALEDIR_MAX 260
+
+char *_os2_libdir = NULL;
+char *_os2_localealiaspath = NULL;
+char *_os2_localedir = NULL;
+
+static __attribute__((constructor)) void
+os2_initialize ()
+{
+  char *root = getenv ("UNIXROOT");
+  char *gnulocaledir = getenv ("GNULOCALEDIR");
+
+  _os2_libdir = gnulocaledir;
+  if (!_os2_libdir)
+    {
+      if (root)
+        {
+          size_t sl = strlen (root);
+          _os2_libdir = (char *) malloc (sl + strlen (LIBDIR) + 1);
+          memcpy (_os2_libdir, root, sl);
+          memcpy (_os2_libdir + sl, LIBDIR, strlen (LIBDIR) + 1);
+        }
+      else
+        _os2_libdir = LIBDIR;
+    }
+
+  _os2_localealiaspath = gnulocaledir;
+  if (!_os2_localealiaspath)
+    {
+      if (root)
+        {
+          size_t sl = strlen (root);
+          _os2_localealiaspath = (char *) malloc (sl + strlen (LOCALE_ALIAS_PATH) + 1);
+          memcpy (_os2_localealiaspath, root, sl);
+          memcpy (_os2_localealiaspath + sl, LOCALE_ALIAS_PATH, strlen (LOCALE_ALIAS_PATH) + 1);
+        }
+     else
+        _os2_localealiaspath = LOCALE_ALIAS_PATH;
+    }
+
+  _os2_localedir = gnulocaledir;
+  if (!_os2_localedir)
+    {
+      if (root)
+        {
+          size_t sl = strlen (root);
+          _os2_localedir = (char *) malloc (sl + strlen (LOCALEDIR) + 1);
+          memcpy (_os2_localedir, root, sl);
+          memcpy (_os2_localedir + sl, LOCALEDIR, strlen (LOCALEDIR) + 1);
+        }
+      else
+        _os2_localedir = LOCALEDIR;
+    }
+
+  {
+    extern const char _nl_default_dirname__[];
+    if (strlen (_os2_localedir) <= LOCALEDIR_MAX)
+      strcpy (_nl_default_dirname__, _os2_localedir);
+  }
+}
diff --git a/src/sed/intl/os2compat.h b/src/sed/intl/os2compat.h
new file mode 100644
index 0000000..33175b7
--- /dev/null
+++ b/src/sed/intl/os2compat.h
@@ -0,0 +1,46 @@
+/* OS/2 compatibility defines.
+   This file is intended to be included from config.h
+   Copyright (C) 2001-2002 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* When included from os2compat.h we need all the original definitions */
+#ifndef OS2_AWARE
+
+#undef LIBDIR
+#define LIBDIR			_os2_libdir
+extern char *_os2_libdir;
+
+#undef LOCALEDIR
+#define LOCALEDIR		_os2_localedir
+extern char *_os2_localedir;
+
+#undef LOCALE_ALIAS_PATH
+#define LOCALE_ALIAS_PATH	_os2_localealiaspath
+extern char *_os2_localealiaspath;
+
+#endif
+
+#undef HAVE_STRCASECMP
+#define HAVE_STRCASECMP 1
+#define strcasecmp stricmp
+#define strncasecmp strnicmp
+
+/* We have our own getenv() which works even if library is compiled as DLL */
+#define getenv _nl_getenv
+
+/* Older versions of gettext used -1 as the value of LC_MESSAGES */
+#define LC_MESSAGES_COMPAT (-1)
diff --git a/src/sed/intl/osdep.c b/src/sed/intl/osdep.c
new file mode 100644
index 0000000..d2d8575
--- /dev/null
+++ b/src/sed/intl/osdep.c
@@ -0,0 +1,24 @@
+/* OS dependent parts of libintl.
+   Copyright (C) 2001-2002 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#if defined __EMX__
+# include "os2compat.c"
+#else
+/* Avoid AIX compiler warning.  */
+typedef int dummy;
+#endif
diff --git a/src/sed/intl/plural-exp.c b/src/sed/intl/plural-exp.c
new file mode 100644
index 0000000..0660896
--- /dev/null
+++ b/src/sed/intl/plural-exp.c
@@ -0,0 +1,156 @@
+/* Expression parsing for plural form selection.
+   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+   Written by Ulrich Drepper <drepper@cygnus.com>, 2000.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "plural-exp.h"
+
+#if (defined __GNUC__ && !defined __APPLE_CC__) \
+    || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
+
+/* These structs are the constant expression for the germanic plural
+   form determination.  It represents the expression  "n != 1".  */
+static const struct expression plvar =
+{
+  .nargs = 0,
+  .operation = var,
+};
+static const struct expression plone =
+{
+  .nargs = 0,
+  .operation = num,
+  .val =
+  {
+    .num = 1
+  }
+};
+struct expression GERMANIC_PLURAL =
+{
+  .nargs = 2,
+  .operation = not_equal,
+  .val =
+  {
+    .args =
+    {
+      [0] = (struct expression *) &plvar,
+      [1] = (struct expression *) &plone
+    }
+  }
+};
+
+# define INIT_GERMANIC_PLURAL()
+
+#else
+
+/* For compilers without support for ISO C 99 struct/union initializers:
+   Initialization at run-time.  */
+
+static struct expression plvar;
+static struct expression plone;
+struct expression GERMANIC_PLURAL;
+
+static void
+init_germanic_plural ()
+{
+  if (plone.val.num == 0)
+    {
+      plvar.nargs = 0;
+      plvar.operation = var;
+
+      plone.nargs = 0;
+      plone.operation = num;
+      plone.val.num = 1;
+
+      GERMANIC_PLURAL.nargs = 2;
+      GERMANIC_PLURAL.operation = not_equal;
+      GERMANIC_PLURAL.val.args[0] = &plvar;
+      GERMANIC_PLURAL.val.args[1] = &plone;
+    }
+}
+
+# define INIT_GERMANIC_PLURAL() init_germanic_plural ()
+
+#endif
+
+void
+internal_function
+EXTRACT_PLURAL_EXPRESSION (nullentry, pluralp, npluralsp)
+     const char *nullentry;
+     struct expression **pluralp;
+     unsigned long int *npluralsp;
+{
+  if (nullentry != NULL)
+    {
+      const char *plural;
+      const char *nplurals;
+
+      plural = strstr (nullentry, "plural=");
+      nplurals = strstr (nullentry, "nplurals=");
+      if (plural == NULL || nplurals == NULL)
+	goto no_plural;
+      else
+	{
+	  char *endp;
+	  unsigned long int n;
+	  struct parse_args args;
+
+	  /* First get the number.  */
+	  nplurals += 9;
+	  while (*nplurals != '\0' && isspace ((unsigned char) *nplurals))
+	    ++nplurals;
+	  if (!(*nplurals >= '0' && *nplurals <= '9'))
+	    goto no_plural;
+#if defined HAVE_STRTOUL || defined _LIBC
+	  n = strtoul (nplurals, &endp, 10);
+#else
+	  for (endp = nplurals, n = 0; *endp >= '0' && *endp <= '9'; endp++)
+	    n = n * 10 + (*endp - '0');
+#endif
+	  if (nplurals == endp)
+	    goto no_plural;
+	  *npluralsp = n;
+
+	  /* Due to the restrictions bison imposes onto the interface of the
+	     scanner function we have to put the input string and the result
+	     passed up from the parser into the same structure which address
+	     is passed down to the parser.  */
+	  plural += 7;
+	  args.cp = plural;
+	  if (PLURAL_PARSE (&args) != 0)
+	    goto no_plural;
+	  *pluralp = args.res;
+	}
+    }
+  else
+    {
+      /* By default we are using the Germanic form: singular form only
+         for `one', the plural form otherwise.  Yes, this is also what
+         English is using since English is a Germanic language.  */
+    no_plural:
+      INIT_GERMANIC_PLURAL ();
+      *pluralp = &GERMANIC_PLURAL;
+      *npluralsp = 2;
+    }
+}
diff --git a/src/sed/intl/plural-exp.h b/src/sed/intl/plural-exp.h
new file mode 100644
index 0000000..62fc413
--- /dev/null
+++ b/src/sed/intl/plural-exp.h
@@ -0,0 +1,122 @@
+/* Expression parsing and evaluation for plural form selection.
+   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+   Written by Ulrich Drepper <drepper@cygnus.com>, 2000.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifndef _PLURAL_EXP_H
+#define _PLURAL_EXP_H
+
+#ifndef PARAMS
+# if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES
+#  define PARAMS(args) args
+# else
+#  define PARAMS(args) ()
+# endif
+#endif
+
+#ifndef internal_function
+# define internal_function
+#endif
+
+
+/* This is the representation of the expressions to determine the
+   plural form.  */
+struct expression
+{
+  int nargs;			/* Number of arguments.  */
+  enum operator
+  {
+    /* Without arguments:  */
+    var,			/* The variable "n".  */
+    num,			/* Decimal number.  */
+    /* Unary operators:  */
+    lnot,			/* Logical NOT.  */
+    /* Binary operators:  */
+    mult,			/* Multiplication.  */
+    divide,			/* Division.  */
+    module,			/* Modulo operation.  */
+    plus,			/* Addition.  */
+    minus,			/* Subtraction.  */
+    less_than,			/* Comparison.  */
+    greater_than,		/* Comparison.  */
+    less_or_equal,		/* Comparison.  */
+    greater_or_equal,		/* Comparison.  */
+    equal,			/* Comparison for equality.  */
+    not_equal,			/* Comparison for inequality.  */
+    land,			/* Logical AND.  */
+    lor,			/* Logical OR.  */
+    /* Ternary operators:  */
+    qmop			/* Question mark operator.  */
+  } operation;
+  union
+  {
+    unsigned long int num;	/* Number value for `num'.  */
+    struct expression *args[3];	/* Up to three arguments.  */
+  } val;
+};
+
+/* This is the data structure to pass information to the parser and get
+   the result in a thread-safe way.  */
+struct parse_args
+{
+  const char *cp;
+  struct expression *res;
+};
+
+
+/* Names for the libintl functions are a problem.  This source code is used
+   1. in the GNU C Library library,
+   2. in the GNU libintl library,
+   3. in the GNU gettext tools.
+   The function names in each situation must be different, to allow for
+   binary incompatible changes in 'struct expression'.  Furthermore,
+   1. in the GNU C Library library, the names have a __ prefix,
+   2.+3. in the GNU libintl library and in the GNU gettext tools, the names
+         must follow ANSI C and not start with __.
+   So we have to distinguish the three cases.  */
+#ifdef _LIBC
+# define FREE_EXPRESSION __gettext_free_exp
+# define PLURAL_PARSE __gettextparse
+# define GERMANIC_PLURAL __gettext_germanic_plural
+# define EXTRACT_PLURAL_EXPRESSION __gettext_extract_plural
+#elif defined (IN_LIBINTL)
+# define FREE_EXPRESSION gettext_free_exp__
+# define PLURAL_PARSE gettextparse__
+# define GERMANIC_PLURAL gettext_germanic_plural__
+# define EXTRACT_PLURAL_EXPRESSION gettext_extract_plural__
+#else
+# define FREE_EXPRESSION free_plural_expression
+# define PLURAL_PARSE parse_plural_expression
+# define GERMANIC_PLURAL germanic_plural
+# define EXTRACT_PLURAL_EXPRESSION extract_plural_expression
+#endif
+
+extern void FREE_EXPRESSION PARAMS ((struct expression *exp))
+     internal_function;
+extern int PLURAL_PARSE PARAMS ((void *arg));
+extern struct expression GERMANIC_PLURAL;
+extern void EXTRACT_PLURAL_EXPRESSION PARAMS ((const char *nullentry,
+					       struct expression **pluralp,
+					       unsigned long int *npluralsp))
+     internal_function;
+
+#if !defined (_LIBC) && !defined (IN_LIBINTL)
+extern unsigned long int plural_eval PARAMS ((struct expression *pexp,
+					      unsigned long int n));
+#endif
+
+#endif /* _PLURAL_EXP_H */
diff --git a/src/sed/intl/plural.c b/src/sed/intl/plural.c
new file mode 100644
index 0000000..175c2db
--- /dev/null
+++ b/src/sed/intl/plural.c
@@ -0,0 +1,1322 @@
+
+/*  A Bison parser, made from plural.y
+    by GNU Bison version 1.28  */
+
+#define YYBISON 1  /* Identify Bison output.  */
+
+#define yyparse __gettextparse
+#define yylex __gettextlex
+#define yyerror __gettexterror
+#define yylval __gettextlval
+#define yychar __gettextchar
+#define yydebug __gettextdebug
+#define yynerrs __gettextnerrs
+#define	EQUOP2	257
+#define	CMPOP2	258
+#define	ADDOP2	259
+#define	MULOP2	260
+#define	NUMBER	261
+
+#line 1 "plural.y"
+
+/* Expression parsing for plural form selection.
+   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+   Written by Ulrich Drepper <drepper@cygnus.com>, 2000.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* The bison generated parser uses alloca.  AIX 3 forces us to put this
+   declaration at the beginning of the file.  The declaration in bison's
+   skeleton file comes too late.  This must come before <config.h>
+   because <config.h> may include arbitrary system headers.  */
+#if defined _AIX && !defined __GNUC__
+ #pragma alloca
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stddef.h>
+#include <stdlib.h>
+#include "plural-exp.h"
+
+/* The main function generated by the parser is called __gettextparse,
+   but we want it to be called PLURAL_PARSE.  */
+#ifndef _LIBC
+# define __gettextparse PLURAL_PARSE
+#endif
+
+#define YYLEX_PARAM	&((struct parse_args *) arg)->cp
+#define YYPARSE_PARAM	arg
+
+#line 49 "plural.y"
+typedef union {
+  unsigned long int num;
+  enum operator op;
+  struct expression *exp;
+} YYSTYPE;
+#line 55 "plural.y"
+
+/* Prototypes for local functions.  */
+static struct expression *new_exp PARAMS ((int nargs, enum operator op,
+					   struct expression * const *args));
+static inline struct expression *new_exp_0 PARAMS ((enum operator op));
+static inline struct expression *new_exp_1 PARAMS ((enum operator op,
+						   struct expression *right));
+static struct expression *new_exp_2 PARAMS ((enum operator op,
+					     struct expression *left,
+					     struct expression *right));
+static inline struct expression *new_exp_3 PARAMS ((enum operator op,
+						   struct expression *bexp,
+						   struct expression *tbranch,
+						   struct expression *fbranch));
+static int yylex PARAMS ((YYSTYPE *lval, const char **pexp));
+static void yyerror PARAMS ((const char *str));
+
+/* Allocation of expressions.  */
+
+static struct expression *
+new_exp (nargs, op, args)
+     int nargs;
+     enum operator op;
+     struct expression * const *args;
+{
+  int i;
+  struct expression *newp;
+
+  /* If any of the argument could not be malloc'ed, just return NULL.  */
+  for (i = nargs - 1; i >= 0; i--)
+    if (args[i] == NULL)
+      goto fail;
+
+  /* Allocate a new expression.  */
+  newp = (struct expression *) malloc (sizeof (*newp));
+  if (newp != NULL)
+    {
+      newp->nargs = nargs;
+      newp->operation = op;
+      for (i = nargs - 1; i >= 0; i--)
+	newp->val.args[i] = args[i];
+      return newp;
+    }
+
+ fail:
+  for (i = nargs - 1; i >= 0; i--)
+    FREE_EXPRESSION (args[i]);
+
+  return NULL;
+}
+
+static inline struct expression *
+new_exp_0 (op)
+     enum operator op;
+{
+  return new_exp (0, op, NULL);
+}
+
+static inline struct expression *
+new_exp_1 (op, right)
+     enum operator op;
+     struct expression *right;
+{
+  struct expression *args[1];
+
+  args[0] = right;
+  return new_exp (1, op, args);
+}
+
+static struct expression *
+new_exp_2 (op, left, right)
+     enum operator op;
+     struct expression *left;
+     struct expression *right;
+{
+  struct expression *args[2];
+
+  args[0] = left;
+  args[1] = right;
+  return new_exp (2, op, args);
+}
+
+static inline struct expression *
+new_exp_3 (op, bexp, tbranch, fbranch)
+     enum operator op;
+     struct expression *bexp;
+     struct expression *tbranch;
+     struct expression *fbranch;
+{
+  struct expression *args[3];
+
+  args[0] = bexp;
+  args[1] = tbranch;
+  args[2] = fbranch;
+  return new_exp (3, op, args);
+}
+
+#include <stdio.h>
+
+#ifndef __cplusplus
+#ifndef __STDC__
+#define const
+#endif
+#endif
+
+
+
+#define	YYFINAL		27
+#define	YYFLAG		-32768
+#define	YYNTBASE	16
+
+#define YYTRANSLATE(x) ((unsigned)(x) <= 261 ? yytranslate[x] : 18)
+
+static const char yytranslate[] = {     0,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,    10,     2,     2,     2,     2,     5,     2,    14,
+    15,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,    12,     2,     2,
+     2,     2,     3,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,    13,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     4,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+     2,     2,     2,     2,     2,     1,     6,     7,     8,     9,
+    11
+};
+
+#if YYDEBUG != 0
+static const short yyprhs[] = {     0,
+     0,     2,     8,    12,    16,    20,    24,    28,    32,    35,
+    37,    39
+};
+
+static const short yyrhs[] = {    17,
+     0,    17,     3,    17,    12,    17,     0,    17,     4,    17,
+     0,    17,     5,    17,     0,    17,     6,    17,     0,    17,
+     7,    17,     0,    17,     8,    17,     0,    17,     9,    17,
+     0,    10,    17,     0,    13,     0,    11,     0,    14,    17,
+    15,     0
+};
+
+#endif
+
+#if YYDEBUG != 0
+static const short yyrline[] = { 0,
+   174,   182,   186,   190,   194,   198,   202,   206,   210,   214,
+   218,   223
+};
+#endif
+
+
+#if YYDEBUG != 0 || defined (YYERROR_VERBOSE)
+
+static const char * const yytname[] = {   "$","error","$undefined.","'?'","'|'",
+"'&'","EQUOP2","CMPOP2","ADDOP2","MULOP2","'!'","NUMBER","':'","'n'","'('","')'",
+"start","exp", NULL
+};
+#endif
+
+static const short yyr1[] = {     0,
+    16,    17,    17,    17,    17,    17,    17,    17,    17,    17,
+    17,    17
+};
+
+static const short yyr2[] = {     0,
+     1,     5,     3,     3,     3,     3,     3,     3,     2,     1,
+     1,     3
+};
+
+static const short yydefact[] = {     0,
+     0,    11,    10,     0,     1,     9,     0,     0,     0,     0,
+     0,     0,     0,     0,    12,     0,     3,     4,     5,     6,
+     7,     8,     0,     2,     0,     0,     0
+};
+
+static const short yydefgoto[] = {    25,
+     5
+};
+
+static const short yypact[] = {    -9,
+    -9,-32768,-32768,    -9,    34,-32768,    11,    -9,    -9,    -9,
+    -9,    -9,    -9,    -9,-32768,    24,    39,    43,    16,    26,
+    -3,-32768,    -9,    34,    21,    53,-32768
+};
+
+static const short yypgoto[] = {-32768,
+    -1
+};
+
+
+#define	YYLAST		53
+
+
+static const short yytable[] = {     6,
+     1,     2,     7,     3,     4,    14,    16,    17,    18,    19,
+    20,    21,    22,     8,     9,    10,    11,    12,    13,    14,
+    26,    24,    12,    13,    14,    15,     8,     9,    10,    11,
+    12,    13,    14,    13,    14,    23,     8,     9,    10,    11,
+    12,    13,    14,    10,    11,    12,    13,    14,    11,    12,
+    13,    14,    27
+};
+
+static const short yycheck[] = {     1,
+    10,    11,     4,    13,    14,     9,     8,     9,    10,    11,
+    12,    13,    14,     3,     4,     5,     6,     7,     8,     9,
+     0,    23,     7,     8,     9,    15,     3,     4,     5,     6,
+     7,     8,     9,     8,     9,    12,     3,     4,     5,     6,
+     7,     8,     9,     5,     6,     7,     8,     9,     6,     7,
+     8,     9,     0
+};
+#define YYPURE 1
+
+/* -*-C-*-  Note some compilers choke on comments on `#line' lines.  */
+#line 3 "/usr/local/share/bison.simple"
+/* This file comes from bison-1.28.  */
+
+/* Skeleton output parser for bison,
+   Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+/* As a special exception, when this file is copied by Bison into a
+   Bison output file, you may use that output file without restriction.
+   This special exception was added by the Free Software Foundation
+   in version 1.24 of Bison.  */
+
+/* This is the parser code that is written into each bison parser
+  when the %semantic_parser declaration is not specified in the grammar.
+  It was written by Richard Stallman by simplifying the hairy parser
+  used when %semantic_parser is specified.  */
+
+#ifndef YYSTACK_USE_ALLOCA
+#ifdef alloca
+#define YYSTACK_USE_ALLOCA
+#else /* alloca not defined */
+#ifdef __GNUC__
+#define YYSTACK_USE_ALLOCA
+#define alloca __builtin_alloca
+#else /* not GNU C.  */
+#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) || (defined (__sun) && defined (__i386))
+#define YYSTACK_USE_ALLOCA
+#include <alloca.h>
+#else /* not sparc */
+/* We think this test detects Watcom and Microsoft C.  */
+/* This used to test MSDOS, but that is a bad idea
+   since that symbol is in the user namespace.  */
+#if (defined (_MSDOS) || defined (_MSDOS_)) && !defined (__TURBOC__)
+#if 0 /* No need for malloc.h, which pollutes the namespace;
+	 instead, just don't use alloca.  */
+#include <malloc.h>
+#endif
+#else /* not MSDOS, or __TURBOC__ */
+#if defined(_AIX)
+/* I don't know what this was needed for, but it pollutes the namespace.
+   So I turned it off.   rms, 2 May 1997.  */
+/* #include <malloc.h>  */
+ #pragma alloca
+#define YYSTACK_USE_ALLOCA
+#else /* not MSDOS, or __TURBOC__, or _AIX */
+#if 0
+#ifdef __hpux /* haible@ilog.fr says this works for HPUX 9.05 and up,
+		 and on HPUX 10.  Eventually we can turn this on.  */
+#define YYSTACK_USE_ALLOCA
+#define alloca __builtin_alloca
+#endif /* __hpux */
+#endif
+#endif /* not _AIX */
+#endif /* not MSDOS, or __TURBOC__ */
+#endif /* not sparc */
+#endif /* not GNU C */
+#endif /* alloca not defined */
+#endif /* YYSTACK_USE_ALLOCA not defined */
+
+#ifdef YYSTACK_USE_ALLOCA
+#define YYSTACK_ALLOC alloca
+#else
+#define YYSTACK_ALLOC malloc
+#endif
+
+/* Note: there must be only one dollar sign in this file.
+   It is replaced by the list of actions, each action
+   as one case of the switch.  */
+
+#define yyerrok		(yyerrstatus = 0)
+#define yyclearin	(yychar = YYEMPTY)
+#define YYEMPTY		-2
+#define YYEOF		0
+#define YYACCEPT	goto yyacceptlab
+#define YYABORT 	goto yyabortlab
+#define YYERROR		goto yyerrlab1
+/* Like YYERROR except do call yyerror.
+   This remains here temporarily to ease the
+   transition to the new meaning of YYERROR, for GCC.
+   Once GCC version 2 has supplanted version 1, this can go.  */
+#define YYFAIL		goto yyerrlab
+#define YYRECOVERING()  (!!yyerrstatus)
+#define YYBACKUP(token, value) \
+do								\
+  if (yychar == YYEMPTY && yylen == 1)				\
+    { yychar = (token), yylval = (value);			\
+      yychar1 = YYTRANSLATE (yychar);				\
+      YYPOPSTACK;						\
+      goto yybackup;						\
+    }								\
+  else								\
+    { yyerror ("syntax error: cannot back up"); YYERROR; }	\
+while (0)
+
+#define YYTERROR	1
+#define YYERRCODE	256
+
+#ifndef YYPURE
+#define YYLEX		yylex()
+#endif
+
+#ifdef YYPURE
+#ifdef YYLSP_NEEDED
+#ifdef YYLEX_PARAM
+#define YYLEX		yylex(&yylval, &yylloc, YYLEX_PARAM)
+#else
+#define YYLEX		yylex(&yylval, &yylloc)
+#endif
+#else /* not YYLSP_NEEDED */
+#ifdef YYLEX_PARAM
+#define YYLEX		yylex(&yylval, YYLEX_PARAM)
+#else
+#define YYLEX		yylex(&yylval)
+#endif
+#endif /* not YYLSP_NEEDED */
+#endif
+
+/* If nonreentrant, generate the variables here */
+
+#ifndef YYPURE
+
+int	yychar;			/*  the lookahead symbol		*/
+YYSTYPE	yylval;			/*  the semantic value of the		*/
+				/*  lookahead symbol			*/
+
+#ifdef YYLSP_NEEDED
+YYLTYPE yylloc;			/*  location data for the lookahead	*/
+				/*  symbol				*/
+#endif
+
+int yynerrs;			/*  number of parse errors so far       */
+#endif  /* not YYPURE */
+
+#if YYDEBUG != 0
+int yydebug;			/*  nonzero means print parse trace	*/
+/* Since this is uninitialized, it does not stop multiple parsers
+   from coexisting.  */
+#endif
+
+/*  YYINITDEPTH indicates the initial size of the parser's stacks	*/
+
+#ifndef	YYINITDEPTH
+#define YYINITDEPTH 200
+#endif
+
+/*  YYMAXDEPTH is the maximum size the stacks can grow to
+    (effective only if the built-in stack extension method is used).  */
+
+#if YYMAXDEPTH == 0
+#undef YYMAXDEPTH
+#endif
+
+#ifndef YYMAXDEPTH
+#define YYMAXDEPTH 10000
+#endif
+
+/* Define __yy_memcpy.  Note that the size argument
+   should be passed with type unsigned int, because that is what the non-GCC
+   definitions require.  With GCC, __builtin_memcpy takes an arg
+   of type size_t, but it can handle unsigned int.  */
+
+#if __GNUC__ > 1		/* GNU C and GNU C++ define this.  */
+#define __yy_memcpy(TO,FROM,COUNT)	__builtin_memcpy(TO,FROM,COUNT)
+#else				/* not GNU C or C++ */
+#ifndef __cplusplus
+
+/* This is the most reliable way to avoid incompatibilities
+   in available built-in functions on various systems.  */
+static void
+__yy_memcpy (to, from, count)
+     char *to;
+     char *from;
+     unsigned int count;
+{
+  register char *f = from;
+  register char *t = to;
+  register int i = count;
+
+  while (i-- > 0)
+    *t++ = *f++;
+}
+
+#else /* __cplusplus */
+
+/* This is the most reliable way to avoid incompatibilities
+   in available built-in functions on various systems.  */
+static void
+__yy_memcpy (char *to, char *from, unsigned int count)
+{
+  register char *t = to;
+  register char *f = from;
+  register int i = count;
+
+  while (i-- > 0)
+    *t++ = *f++;
+}
+
+#endif
+#endif
+
+#line 217 "/usr/local/share/bison.simple"
+
+/* The user can define YYPARSE_PARAM as the name of an argument to be passed
+   into yyparse.  The argument should have type void *.
+   It should actually point to an object.
+   Grammar actions can access the variable by casting it
+   to the proper pointer type.  */
+
+#ifdef YYPARSE_PARAM
+#ifdef __cplusplus
+#define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
+#define YYPARSE_PARAM_DECL
+#else /* not __cplusplus */
+#define YYPARSE_PARAM_ARG YYPARSE_PARAM
+#define YYPARSE_PARAM_DECL void *YYPARSE_PARAM;
+#endif /* not __cplusplus */
+#else /* not YYPARSE_PARAM */
+#define YYPARSE_PARAM_ARG
+#define YYPARSE_PARAM_DECL
+#endif /* not YYPARSE_PARAM */
+
+/* Prevent warning if -Wstrict-prototypes.  */
+#ifdef __GNUC__
+#ifdef YYPARSE_PARAM
+int yyparse (void *);
+#else
+int yyparse (void);
+#endif
+#endif
+
+int
+yyparse(YYPARSE_PARAM_ARG)
+     YYPARSE_PARAM_DECL
+{
+  register int yystate;
+  register int yyn;
+  register short *yyssp;
+  register YYSTYPE *yyvsp;
+  int yyerrstatus;	/*  number of tokens to shift before error messages enabled */
+  int yychar1 = 0;		/*  lookahead token as an internal (translated) token number */
+
+  short	yyssa[YYINITDEPTH];	/*  the state stack			*/
+  YYSTYPE yyvsa[YYINITDEPTH];	/*  the semantic value stack		*/
+
+  short *yyss = yyssa;		/*  refer to the stacks thru separate pointers */
+  YYSTYPE *yyvs = yyvsa;	/*  to allow yyoverflow to reallocate them elsewhere */
+
+#ifdef YYLSP_NEEDED
+  YYLTYPE yylsa[YYINITDEPTH];	/*  the location stack			*/
+  YYLTYPE *yyls = yylsa;
+  YYLTYPE *yylsp;
+
+#define YYPOPSTACK   (yyvsp--, yyssp--, yylsp--)
+#else
+#define YYPOPSTACK   (yyvsp--, yyssp--)
+#endif
+
+  int yystacksize = YYINITDEPTH;
+  int yyfree_stacks = 0;
+
+#ifdef YYPURE
+  int yychar;
+  YYSTYPE yylval;
+  int yynerrs;
+#ifdef YYLSP_NEEDED
+  YYLTYPE yylloc;
+#endif
+#endif
+
+  YYSTYPE yyval;		/*  the variable used to return		*/
+				/*  semantic values from the action	*/
+				/*  routines				*/
+
+  int yylen;
+
+#if YYDEBUG != 0
+  if (yydebug)
+    fprintf(stderr, "Starting parse\n");
+#endif
+
+  yystate = 0;
+  yyerrstatus = 0;
+  yynerrs = 0;
+  yychar = YYEMPTY;		/* Cause a token to be read.  */
+
+  /* Initialize stack pointers.
+     Waste one element of value and location stack
+     so that they stay on the same level as the state stack.
+     The wasted elements are never initialized.  */
+
+  yyssp = yyss - 1;
+  yyvsp = yyvs;
+#ifdef YYLSP_NEEDED
+  yylsp = yyls;
+#endif
+
+/* Push a new state, which is found in  yystate  .  */
+/* In all cases, when you get here, the value and location stacks
+   have just been pushed. so pushing a state here evens the stacks.  */
+yynewstate:
+
+  *++yyssp = yystate;
+
+  if (yyssp >= yyss + yystacksize - 1)
+    {
+      /* Give user a chance to reallocate the stack */
+      /* Use copies of these so that the &'s don't force the real ones into memory. */
+      YYSTYPE *yyvs1 = yyvs;
+      short *yyss1 = yyss;
+#ifdef YYLSP_NEEDED
+      YYLTYPE *yyls1 = yyls;
+#endif
+
+      /* Get the current used size of the three stacks, in elements.  */
+      int size = yyssp - yyss + 1;
+
+#ifdef yyoverflow
+      /* Each stack pointer address is followed by the size of
+	 the data in use in that stack, in bytes.  */
+#ifdef YYLSP_NEEDED
+      /* This used to be a conditional around just the two extra args,
+	 but that might be undefined if yyoverflow is a macro.  */
+      yyoverflow("parser stack overflow",
+		 &yyss1, size * sizeof (*yyssp),
+		 &yyvs1, size * sizeof (*yyvsp),
+		 &yyls1, size * sizeof (*yylsp),
+		 &yystacksize);
+#else
+      yyoverflow("parser stack overflow",
+		 &yyss1, size * sizeof (*yyssp),
+		 &yyvs1, size * sizeof (*yyvsp),
+		 &yystacksize);
+#endif
+
+      yyss = yyss1; yyvs = yyvs1;
+#ifdef YYLSP_NEEDED
+      yyls = yyls1;
+#endif
+#else /* no yyoverflow */
+      /* Extend the stack our own way.  */
+      if (yystacksize >= YYMAXDEPTH)
+	{
+	  yyerror("parser stack overflow");
+	  if (yyfree_stacks)
+	    {
+	      free (yyss);
+	      free (yyvs);
+#ifdef YYLSP_NEEDED
+	      free (yyls);
+#endif
+	    }
+	  return 2;
+	}
+      yystacksize *= 2;
+      if (yystacksize > YYMAXDEPTH)
+	yystacksize = YYMAXDEPTH;
+#ifndef YYSTACK_USE_ALLOCA
+      yyfree_stacks = 1;
+#endif
+      yyss = (short *) YYSTACK_ALLOC (yystacksize * sizeof (*yyssp));
+      __yy_memcpy ((char *)yyss, (char *)yyss1,
+		   size * (unsigned int) sizeof (*yyssp));
+      yyvs = (YYSTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yyvsp));
+      __yy_memcpy ((char *)yyvs, (char *)yyvs1,
+		   size * (unsigned int) sizeof (*yyvsp));
+#ifdef YYLSP_NEEDED
+      yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp));
+      __yy_memcpy ((char *)yyls, (char *)yyls1,
+		   size * (unsigned int) sizeof (*yylsp));
+#endif
+#endif /* no yyoverflow */
+
+      yyssp = yyss + size - 1;
+      yyvsp = yyvs + size - 1;
+#ifdef YYLSP_NEEDED
+      yylsp = yyls + size - 1;
+#endif
+
+#if YYDEBUG != 0
+      if (yydebug)
+	fprintf(stderr, "Stack size increased to %d\n", yystacksize);
+#endif
+
+      if (yyssp >= yyss + yystacksize - 1)
+	YYABORT;
+    }
+
+#if YYDEBUG != 0
+  if (yydebug)
+    fprintf(stderr, "Entering state %d\n", yystate);
+#endif
+
+  goto yybackup;
+ yybackup:
+
+/* Do appropriate processing given the current state.  */
+/* Read a lookahead token if we need one and don't already have one.  */
+/* yyresume: */
+
+  /* First try to decide what to do without reference to lookahead token.  */
+
+  yyn = yypact[yystate];
+  if (yyn == YYFLAG)
+    goto yydefault;
+
+  /* Not known => get a lookahead token if don't already have one.  */
+
+  /* yychar is either YYEMPTY or YYEOF
+     or a valid token in external form.  */
+
+  if (yychar == YYEMPTY)
+    {
+#if YYDEBUG != 0
+      if (yydebug)
+	fprintf(stderr, "Reading a token: ");
+#endif
+      yychar = YYLEX;
+    }
+
+  /* Convert token to internal form (in yychar1) for indexing tables with */
+
+  if (yychar <= 0)		/* This means end of input. */
+    {
+      yychar1 = 0;
+      yychar = YYEOF;		/* Don't call YYLEX any more */
+
+#if YYDEBUG != 0
+      if (yydebug)
+	fprintf(stderr, "Now at end of input.\n");
+#endif
+    }
+  else
+    {
+      yychar1 = YYTRANSLATE(yychar);
+
+#if YYDEBUG != 0
+      if (yydebug)
+	{
+	  fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]);
+	  /* Give the individual parser a way to print the precise meaning
+	     of a token, for further debugging info.  */
+#ifdef YYPRINT
+	  YYPRINT (stderr, yychar, yylval);
+#endif
+	  fprintf (stderr, ")\n");
+	}
+#endif
+    }
+
+  yyn += yychar1;
+  if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
+    goto yydefault;
+
+  yyn = yytable[yyn];
+
+  /* yyn is what to do for this token type in this state.
+     Negative => reduce, -yyn is rule number.
+     Positive => shift, yyn is new state.
+       New state is final state => don't bother to shift,
+       just return success.
+     0, or most negative number => error.  */
+
+  if (yyn < 0)
+    {
+      if (yyn == YYFLAG)
+	goto yyerrlab;
+      yyn = -yyn;
+      goto yyreduce;
+    }
+  else if (yyn == 0)
+    goto yyerrlab;
+
+  if (yyn == YYFINAL)
+    YYACCEPT;
+
+  /* Shift the lookahead token.  */
+
+#if YYDEBUG != 0
+  if (yydebug)
+    fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
+#endif
+
+  /* Discard the token being shifted unless it is eof.  */
+  if (yychar != YYEOF)
+    yychar = YYEMPTY;
+
+  *++yyvsp = yylval;
+#ifdef YYLSP_NEEDED
+  *++yylsp = yylloc;
+#endif
+
+  /* count tokens shifted since error; after three, turn off error status.  */
+  if (yyerrstatus) yyerrstatus--;
+
+  yystate = yyn;
+  goto yynewstate;
+
+/* Do the default action for the current state.  */
+yydefault:
+
+  yyn = yydefact[yystate];
+  if (yyn == 0)
+    goto yyerrlab;
+
+/* Do a reduction.  yyn is the number of a rule to reduce with.  */
+yyreduce:
+  yylen = yyr2[yyn];
+  if (yylen > 0)
+    yyval = yyvsp[1-yylen]; /* implement default value of the action */
+
+#if YYDEBUG != 0
+  if (yydebug)
+    {
+      int i;
+
+      fprintf (stderr, "Reducing via rule %d (line %d), ",
+	       yyn, yyrline[yyn]);
+
+      /* Print the symbols being reduced, and their result.  */
+      for (i = yyprhs[yyn]; yyrhs[i] > 0; i++)
+	fprintf (stderr, "%s ", yytname[yyrhs[i]]);
+      fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
+    }
+#endif
+
+
+  switch (yyn) {
+
+case 1:
+#line 175 "plural.y"
+{
+	    if (yyvsp[0].exp == NULL)
+	      YYABORT;
+	    ((struct parse_args *) arg)->res = yyvsp[0].exp;
+	  ;
+    break;}
+case 2:
+#line 183 "plural.y"
+{
+	    yyval.exp = new_exp_3 (qmop, yyvsp[-4].exp, yyvsp[-2].exp, yyvsp[0].exp);
+	  ;
+    break;}
+case 3:
+#line 187 "plural.y"
+{
+	    yyval.exp = new_exp_2 (lor, yyvsp[-2].exp, yyvsp[0].exp);
+	  ;
+    break;}
+case 4:
+#line 191 "plural.y"
+{
+	    yyval.exp = new_exp_2 (land, yyvsp[-2].exp, yyvsp[0].exp);
+	  ;
+    break;}
+case 5:
+#line 195 "plural.y"
+{
+	    yyval.exp = new_exp_2 (yyvsp[-1].op, yyvsp[-2].exp, yyvsp[0].exp);
+	  ;
+    break;}
+case 6:
+#line 199 "plural.y"
+{
+	    yyval.exp = new_exp_2 (yyvsp[-1].op, yyvsp[-2].exp, yyvsp[0].exp);
+	  ;
+    break;}
+case 7:
+#line 203 "plural.y"
+{
+	    yyval.exp = new_exp_2 (yyvsp[-1].op, yyvsp[-2].exp, yyvsp[0].exp);
+	  ;
+    break;}
+case 8:
+#line 207 "plural.y"
+{
+	    yyval.exp = new_exp_2 (yyvsp[-1].op, yyvsp[-2].exp, yyvsp[0].exp);
+	  ;
+    break;}
+case 9:
+#line 211 "plural.y"
+{
+	    yyval.exp = new_exp_1 (lnot, yyvsp[0].exp);
+	  ;
+    break;}
+case 10:
+#line 215 "plural.y"
+{
+	    yyval.exp = new_exp_0 (var);
+	  ;
+    break;}
+case 11:
+#line 219 "plural.y"
+{
+	    if ((yyval.exp = new_exp_0 (num)) != NULL)
+	      yyval.exp->val.num = yyvsp[0].num;
+	  ;
+    break;}
+case 12:
+#line 224 "plural.y"
+{
+	    yyval.exp = yyvsp[-1].exp;
+	  ;
+    break;}
+}
+   /* the action file gets copied in in place of this dollarsign */
+#line 543 "/usr/local/share/bison.simple"
+
+  yyvsp -= yylen;
+  yyssp -= yylen;
+#ifdef YYLSP_NEEDED
+  yylsp -= yylen;
+#endif
+
+#if YYDEBUG != 0
+  if (yydebug)
+    {
+      short *ssp1 = yyss - 1;
+      fprintf (stderr, "state stack now");
+      while (ssp1 != yyssp)
+	fprintf (stderr, " %d", *++ssp1);
+      fprintf (stderr, "\n");
+    }
+#endif
+
+  *++yyvsp = yyval;
+
+#ifdef YYLSP_NEEDED
+  yylsp++;
+  if (yylen == 0)
+    {
+      yylsp->first_line = yylloc.first_line;
+      yylsp->first_column = yylloc.first_column;
+      yylsp->last_line = (yylsp-1)->last_line;
+      yylsp->last_column = (yylsp-1)->last_column;
+      yylsp->text = 0;
+    }
+  else
+    {
+      yylsp->last_line = (yylsp+yylen-1)->last_line;
+      yylsp->last_column = (yylsp+yylen-1)->last_column;
+    }
+#endif
+
+  /* Now "shift" the result of the reduction.
+     Determine what state that goes to,
+     based on the state we popped back to
+     and the rule number reduced by.  */
+
+  yyn = yyr1[yyn];
+
+  yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
+  if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
+    yystate = yytable[yystate];
+  else
+    yystate = yydefgoto[yyn - YYNTBASE];
+
+  goto yynewstate;
+
+yyerrlab:   /* here on detecting error */
+
+  if (! yyerrstatus)
+    /* If not already recovering from an error, report this error.  */
+    {
+      ++yynerrs;
+
+#ifdef YYERROR_VERBOSE
+      yyn = yypact[yystate];
+
+      if (yyn > YYFLAG && yyn < YYLAST)
+	{
+	  int size = 0;
+	  char *msg;
+	  int x, count;
+
+	  count = 0;
+	  /* Start X at -yyn if nec to avoid negative indexes in yycheck.  */
+	  for (x = (yyn < 0 ? -yyn : 0);
+	       x < (sizeof(yytname) / sizeof(char *)); x++)
+	    if (yycheck[x + yyn] == x)
+	      size += strlen(yytname[x]) + 15, count++;
+	  msg = (char *) malloc(size + 15);
+	  if (msg != 0)
+	    {
+	      strcpy(msg, "parse error");
+
+	      if (count < 5)
+		{
+		  count = 0;
+		  for (x = (yyn < 0 ? -yyn : 0);
+		       x < (sizeof(yytname) / sizeof(char *)); x++)
+		    if (yycheck[x + yyn] == x)
+		      {
+			strcat(msg, count == 0 ? ", expecting `" : " or `");
+			strcat(msg, yytname[x]);
+			strcat(msg, "'");
+			count++;
+		      }
+		}
+	      yyerror(msg);
+	      free(msg);
+	    }
+	  else
+	    yyerror ("parse error; also virtual memory exceeded");
+	}
+      else
+#endif /* YYERROR_VERBOSE */
+	yyerror("parse error");
+    }
+
+  goto yyerrlab1;
+yyerrlab1:   /* here on error raised explicitly by an action */
+
+  if (yyerrstatus == 3)
+    {
+      /* if just tried and failed to reuse lookahead token after an error, discard it.  */
+
+      /* return failure if at end of input */
+      if (yychar == YYEOF)
+	YYABORT;
+
+#if YYDEBUG != 0
+      if (yydebug)
+	fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
+#endif
+
+      yychar = YYEMPTY;
+    }
+
+  /* Else will try to reuse lookahead token
+     after shifting the error token.  */
+
+  yyerrstatus = 3;		/* Each real token shifted decrements this */
+
+  goto yyerrhandle;
+
+yyerrdefault:  /* current state does not do anything special for the error token. */
+
+#if 0
+  /* This is wrong; only states that explicitly want error tokens
+     should shift them.  */
+  yyn = yydefact[yystate];  /* If its default is to accept any token, ok.  Otherwise pop it.*/
+  if (yyn) goto yydefault;
+#endif
+
+yyerrpop:   /* pop the current state because it cannot handle the error token */
+
+  if (yyssp == yyss) YYABORT;
+  yyvsp--;
+  yystate = *--yyssp;
+#ifdef YYLSP_NEEDED
+  yylsp--;
+#endif
+
+#if YYDEBUG != 0
+  if (yydebug)
+    {
+      short *ssp1 = yyss - 1;
+      fprintf (stderr, "Error: state stack now");
+      while (ssp1 != yyssp)
+	fprintf (stderr, " %d", *++ssp1);
+      fprintf (stderr, "\n");
+    }
+#endif
+
+yyerrhandle:
+
+  yyn = yypact[yystate];
+  if (yyn == YYFLAG)
+    goto yyerrdefault;
+
+  yyn += YYTERROR;
+  if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
+    goto yyerrdefault;
+
+  yyn = yytable[yyn];
+  if (yyn < 0)
+    {
+      if (yyn == YYFLAG)
+	goto yyerrpop;
+      yyn = -yyn;
+      goto yyreduce;
+    }
+  else if (yyn == 0)
+    goto yyerrpop;
+
+  if (yyn == YYFINAL)
+    YYACCEPT;
+
+#if YYDEBUG != 0
+  if (yydebug)
+    fprintf(stderr, "Shifting error token, ");
+#endif
+
+  *++yyvsp = yylval;
+#ifdef YYLSP_NEEDED
+  *++yylsp = yylloc;
+#endif
+
+  yystate = yyn;
+  goto yynewstate;
+
+ yyacceptlab:
+  /* YYACCEPT comes here.  */
+  if (yyfree_stacks)
+    {
+      free (yyss);
+      free (yyvs);
+#ifdef YYLSP_NEEDED
+      free (yyls);
+#endif
+    }
+  return 0;
+
+ yyabortlab:
+  /* YYABORT comes here.  */
+  if (yyfree_stacks)
+    {
+      free (yyss);
+      free (yyvs);
+#ifdef YYLSP_NEEDED
+      free (yyls);
+#endif
+    }
+  return 1;
+}
+#line 229 "plural.y"
+
+
+void
+internal_function
+FREE_EXPRESSION (exp)
+     struct expression *exp;
+{
+  if (exp == NULL)
+    return;
+
+  /* Handle the recursive case.  */
+  switch (exp->nargs)
+    {
+    case 3:
+      FREE_EXPRESSION (exp->val.args[2]);
+      /* FALLTHROUGH */
+    case 2:
+      FREE_EXPRESSION (exp->val.args[1]);
+      /* FALLTHROUGH */
+    case 1:
+      FREE_EXPRESSION (exp->val.args[0]);
+      /* FALLTHROUGH */
+    default:
+      break;
+    }
+
+  free (exp);
+}
+
+
+static int
+yylex (lval, pexp)
+     YYSTYPE *lval;
+     const char **pexp;
+{
+  const char *exp = *pexp;
+  int result;
+
+  while (1)
+    {
+      if (exp[0] == '\0')
+	{
+	  *pexp = exp;
+	  return YYEOF;
+	}
+
+      if (exp[0] != ' ' && exp[0] != '\t')
+	break;
+
+      ++exp;
+    }
+
+  result = *exp++;
+  switch (result)
+    {
+    case '0': case '1': case '2': case '3': case '4':
+    case '5': case '6': case '7': case '8': case '9':
+      {
+	unsigned long int n = result - '0';
+	while (exp[0] >= '0' && exp[0] <= '9')
+	  {
+	    n *= 10;
+	    n += exp[0] - '0';
+	    ++exp;
+	  }
+	lval->num = n;
+	result = NUMBER;
+      }
+      break;
+
+    case '=':
+      if (exp[0] == '=')
+	{
+	  ++exp;
+	  lval->op = equal;
+	  result = EQUOP2;
+	}
+      else
+	result = YYERRCODE;
+      break;
+
+    case '!':
+      if (exp[0] == '=')
+	{
+	  ++exp;
+	  lval->op = not_equal;
+	  result = EQUOP2;
+	}
+      break;
+
+    case '&':
+    case '|':
+      if (exp[0] == result)
+	++exp;
+      else
+	result = YYERRCODE;
+      break;
+
+    case '<':
+      if (exp[0] == '=')
+	{
+	  ++exp;
+	  lval->op = less_or_equal;
+	}
+      else
+	lval->op = less_than;
+      result = CMPOP2;
+      break;
+
+    case '>':
+      if (exp[0] == '=')
+	{
+	  ++exp;
+	  lval->op = greater_or_equal;
+	}
+      else
+	lval->op = greater_than;
+      result = CMPOP2;
+      break;
+
+    case '*':
+      lval->op = mult;
+      result = MULOP2;
+      break;
+
+    case '/':
+      lval->op = divide;
+      result = MULOP2;
+      break;
+
+    case '%':
+      lval->op = module;
+      result = MULOP2;
+      break;
+
+    case '+':
+      lval->op = plus;
+      result = ADDOP2;
+      break;
+
+    case '-':
+      lval->op = minus;
+      result = ADDOP2;
+      break;
+
+    case 'n':
+    case '?':
+    case ':':
+    case '(':
+    case ')':
+      /* Nothing, just return the character.  */
+      break;
+
+    case ';':
+    case '\n':
+    case '\0':
+      /* Be safe and let the user call this function again.  */
+      --exp;
+      result = YYEOF;
+      break;
+
+    default:
+      result = YYERRCODE;
+#if YYDEBUG != 0
+      --exp;
+#endif
+      break;
+    }
+
+  *pexp = exp;
+
+  return result;
+}
+
+
+static void
+yyerror (str)
+     const char *str;
+{
+  /* Do nothing.  We don't print error messages here.  */
+}
diff --git a/src/sed/intl/plural.y b/src/sed/intl/plural.y
new file mode 100644
index 0000000..75a1c01
--- /dev/null
+++ b/src/sed/intl/plural.y
@@ -0,0 +1,409 @@
+%{
+/* Expression parsing for plural form selection.
+   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+   Written by Ulrich Drepper <drepper@cygnus.com>, 2000.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* The bison generated parser uses alloca.  AIX 3 forces us to put this
+   declaration at the beginning of the file.  The declaration in bison's
+   skeleton file comes too late.  This must come before <config.h>
+   because <config.h> may include arbitrary system headers.  */
+#if defined _AIX && !defined __GNUC__
+ #pragma alloca
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stddef.h>
+#include <stdlib.h>
+#include "plural-exp.h"
+
+/* The main function generated by the parser is called __gettextparse,
+   but we want it to be called PLURAL_PARSE.  */
+#ifndef _LIBC
+# define __gettextparse PLURAL_PARSE
+#endif
+
+#define YYLEX_PARAM	&((struct parse_args *) arg)->cp
+#define YYPARSE_PARAM	arg
+%}
+%pure_parser
+%expect 7
+
+%union {
+  unsigned long int num;
+  enum operator op;
+  struct expression *exp;
+}
+
+%{
+/* Prototypes for local functions.  */
+static struct expression *new_exp PARAMS ((int nargs, enum operator op,
+					   struct expression * const *args));
+static inline struct expression *new_exp_0 PARAMS ((enum operator op));
+static inline struct expression *new_exp_1 PARAMS ((enum operator op,
+						   struct expression *right));
+static struct expression *new_exp_2 PARAMS ((enum operator op,
+					     struct expression *left,
+					     struct expression *right));
+static inline struct expression *new_exp_3 PARAMS ((enum operator op,
+						   struct expression *bexp,
+						   struct expression *tbranch,
+						   struct expression *fbranch));
+static int yylex PARAMS ((YYSTYPE *lval, const char **pexp));
+static void yyerror PARAMS ((const char *str));
+
+/* Allocation of expressions.  */
+
+static struct expression *
+new_exp (nargs, op, args)
+     int nargs;
+     enum operator op;
+     struct expression * const *args;
+{
+  int i;
+  struct expression *newp;
+
+  /* If any of the argument could not be malloc'ed, just return NULL.  */
+  for (i = nargs - 1; i >= 0; i--)
+    if (args[i] == NULL)
+      goto fail;
+
+  /* Allocate a new expression.  */
+  newp = (struct expression *) malloc (sizeof (*newp));
+  if (newp != NULL)
+    {
+      newp->nargs = nargs;
+      newp->operation = op;
+      for (i = nargs - 1; i >= 0; i--)
+	newp->val.args[i] = args[i];
+      return newp;
+    }
+
+ fail:
+  for (i = nargs - 1; i >= 0; i--)
+    FREE_EXPRESSION (args[i]);
+
+  return NULL;
+}
+
+static inline struct expression *
+new_exp_0 (op)
+     enum operator op;
+{
+  return new_exp (0, op, NULL);
+}
+
+static inline struct expression *
+new_exp_1 (op, right)
+     enum operator op;
+     struct expression *right;
+{
+  struct expression *args[1];
+
+  args[0] = right;
+  return new_exp (1, op, args);
+}
+
+static struct expression *
+new_exp_2 (op, left, right)
+     enum operator op;
+     struct expression *left;
+     struct expression *right;
+{
+  struct expression *args[2];
+
+  args[0] = left;
+  args[1] = right;
+  return new_exp (2, op, args);
+}
+
+static inline struct expression *
+new_exp_3 (op, bexp, tbranch, fbranch)
+     enum operator op;
+     struct expression *bexp;
+     struct expression *tbranch;
+     struct expression *fbranch;
+{
+  struct expression *args[3];
+
+  args[0] = bexp;
+  args[1] = tbranch;
+  args[2] = fbranch;
+  return new_exp (3, op, args);
+}
+
+%}
+
+/* This declares that all operators have the same associativity and the
+   precedence order as in C.  See [Harbison, Steele: C, A Reference Manual].
+   There is no unary minus and no bitwise operators.
+   Operators with the same syntactic behaviour have been merged into a single
+   token, to save space in the array generated by bison.  */
+%right '?'		/*   ?		*/
+%left '|'		/*   ||		*/
+%left '&'		/*   &&		*/
+%left EQUOP2		/*   == !=	*/
+%left CMPOP2		/*   < > <= >=	*/
+%left ADDOP2		/*   + -	*/
+%left MULOP2		/*   * / %	*/
+%right '!'		/*   !		*/
+
+%token <op> EQUOP2 CMPOP2 ADDOP2 MULOP2
+%token <num> NUMBER
+%type <exp> exp
+
+%%
+
+start:	  exp
+	  {
+	    if ($1 == NULL)
+	      YYABORT;
+	    ((struct parse_args *) arg)->res = $1;
+	  }
+	;
+
+exp:	  exp '?' exp ':' exp
+	  {
+	    $$ = new_exp_3 (qmop, $1, $3, $5);
+	  }
+	| exp '|' exp
+	  {
+	    $$ = new_exp_2 (lor, $1, $3);
+	  }
+	| exp '&' exp
+	  {
+	    $$ = new_exp_2 (land, $1, $3);
+	  }
+	| exp EQUOP2 exp
+	  {
+	    $$ = new_exp_2 ($2, $1, $3);
+	  }
+	| exp CMPOP2 exp
+	  {
+	    $$ = new_exp_2 ($2, $1, $3);
+	  }
+	| exp ADDOP2 exp
+	  {
+	    $$ = new_exp_2 ($2, $1, $3);
+	  }
+	| exp MULOP2 exp
+	  {
+	    $$ = new_exp_2 ($2, $1, $3);
+	  }
+	| '!' exp
+	  {
+	    $$ = new_exp_1 (lnot, $2);
+	  }
+	| 'n'
+	  {
+	    $$ = new_exp_0 (var);
+	  }
+	| NUMBER
+	  {
+	    if (($$ = new_exp_0 (num)) != NULL)
+	      $$->val.num = $1;
+	  }
+	| '(' exp ')'
+	  {
+	    $$ = $2;
+	  }
+	;
+
+%%
+
+void
+internal_function
+FREE_EXPRESSION (exp)
+     struct expression *exp;
+{
+  if (exp == NULL)
+    return;
+
+  /* Handle the recursive case.  */
+  switch (exp->nargs)
+    {
+    case 3:
+      FREE_EXPRESSION (exp->val.args[2]);
+      /* FALLTHROUGH */
+    case 2:
+      FREE_EXPRESSION (exp->val.args[1]);
+      /* FALLTHROUGH */
+    case 1:
+      FREE_EXPRESSION (exp->val.args[0]);
+      /* FALLTHROUGH */
+    default:
+      break;
+    }
+
+  free (exp);
+}
+
+
+static int
+yylex (lval, pexp)
+     YYSTYPE *lval;
+     const char **pexp;
+{
+  const char *exp = *pexp;
+  int result;
+
+  while (1)
+    {
+      if (exp[0] == '\0')
+	{
+	  *pexp = exp;
+	  return YYEOF;
+	}
+
+      if (exp[0] != ' ' && exp[0] != '\t')
+	break;
+
+      ++exp;
+    }
+
+  result = *exp++;
+  switch (result)
+    {
+    case '0': case '1': case '2': case '3': case '4':
+    case '5': case '6': case '7': case '8': case '9':
+      {
+	unsigned long int n = result - '0';
+	while (exp[0] >= '0' && exp[0] <= '9')
+	  {
+	    n *= 10;
+	    n += exp[0] - '0';
+	    ++exp;
+	  }
+	lval->num = n;
+	result = NUMBER;
+      }
+      break;
+
+    case '=':
+      if (exp[0] == '=')
+	{
+	  ++exp;
+	  lval->op = equal;
+	  result = EQUOP2;
+	}
+      else
+	result = YYERRCODE;
+      break;
+
+    case '!':
+      if (exp[0] == '=')
+	{
+	  ++exp;
+	  lval->op = not_equal;
+	  result = EQUOP2;
+	}
+      break;
+
+    case '&':
+    case '|':
+      if (exp[0] == result)
+	++exp;
+      else
+	result = YYERRCODE;
+      break;
+
+    case '<':
+      if (exp[0] == '=')
+	{
+	  ++exp;
+	  lval->op = less_or_equal;
+	}
+      else
+	lval->op = less_than;
+      result = CMPOP2;
+      break;
+
+    case '>':
+      if (exp[0] == '=')
+	{
+	  ++exp;
+	  lval->op = greater_or_equal;
+	}
+      else
+	lval->op = greater_than;
+      result = CMPOP2;
+      break;
+
+    case '*':
+      lval->op = mult;
+      result = MULOP2;
+      break;
+
+    case '/':
+      lval->op = divide;
+      result = MULOP2;
+      break;
+
+    case '%':
+      lval->op = module;
+      result = MULOP2;
+      break;
+
+    case '+':
+      lval->op = plus;
+      result = ADDOP2;
+      break;
+
+    case '-':
+      lval->op = minus;
+      result = ADDOP2;
+      break;
+
+    case 'n':
+    case '?':
+    case ':':
+    case '(':
+    case ')':
+      /* Nothing, just return the character.  */
+      break;
+
+    case ';':
+    case '\n':
+    case '\0':
+      /* Be safe and let the user call this function again.  */
+      --exp;
+      result = YYEOF;
+      break;
+
+    default:
+      result = YYERRCODE;
+#if YYDEBUG != 0
+      --exp;
+#endif
+      break;
+    }
+
+  *pexp = exp;
+
+  return result;
+}
+
+
+static void
+yyerror (str)
+     const char *str;
+{
+  /* Do nothing.  We don't print error messages here.  */
+}
diff --git a/src/sed/intl/ref-add.sin b/src/sed/intl/ref-add.sin
new file mode 100644
index 0000000..3678c28
--- /dev/null
+++ b/src/sed/intl/ref-add.sin
@@ -0,0 +1,31 @@
+# Add this package to a list of references stored in a text file.
+#
+#   Copyright (C) 2000 Free Software Foundation, Inc.
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU Library General Public License as published
+#   by the Free Software Foundation; either version 2, or (at your option)
+#   any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#   Library General Public License for more details.
+#
+#   You should have received a copy of the GNU Library General Public
+#   License along with this program; if not, write to the Free Software
+#   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+#   USA.
+#
+# Written by Bruno Haible <haible@clisp.cons.org>.
+#
+/^# Packages using this file: / {
+  s/# Packages using this file://
+  ta
+  :a
+  s/ @PACKAGE@ / @PACKAGE@ /
+  tb
+  s/ $/ @PACKAGE@ /
+  :b
+  s/^/# Packages using this file:/
+}
diff --git a/src/sed/intl/ref-del.sin b/src/sed/intl/ref-del.sin
new file mode 100644
index 0000000..0c12d8e
--- /dev/null
+++ b/src/sed/intl/ref-del.sin
@@ -0,0 +1,26 @@
+# Remove this package from a list of references stored in a text file.
+#
+#   Copyright (C) 2000 Free Software Foundation, Inc.
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU Library General Public License as published
+#   by the Free Software Foundation; either version 2, or (at your option)
+#   any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#   Library General Public License for more details.
+#
+#   You should have received a copy of the GNU Library General Public
+#   License along with this program; if not, write to the Free Software
+#   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+#   USA.
+#
+# Written by Bruno Haible <haible@clisp.cons.org>.
+#
+/^# Packages using this file: / {
+  s/# Packages using this file://
+  s/ @PACKAGE@ / /
+  s/^/# Packages using this file:/
+}
diff --git a/src/sed/intl/textdomain.c b/src/sed/intl/textdomain.c
new file mode 100644
index 0000000..a065bf4
--- /dev/null
+++ b/src/sed/intl/textdomain.c
@@ -0,0 +1,142 @@
+/* Implementation of the textdomain(3) function.
+   Copyright (C) 1995-1998, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgnuintl.h"
+#endif
+#include "gettextP.h"
+
+#ifdef _LIBC
+/* We have to handle multi-threaded applications.  */
+# include <bits/libc-lock.h>
+#else
+/* Provide dummy implementation if this is outside glibc.  */
+# define __libc_rwlock_define(CLASS, NAME)
+# define __libc_rwlock_wrlock(NAME)
+# define __libc_rwlock_unlock(NAME)
+#endif
+
+/* The internal variables in the standalone libintl.a must have different
+   names than the internal variables in GNU libc, otherwise programs
+   using libintl.a cannot be linked statically.  */
+#if !defined _LIBC
+# define _nl_default_default_domain _nl_default_default_domain__
+# define _nl_current_default_domain _nl_current_default_domain__
+#endif
+
+/* @@ end of prolog @@ */
+
+/* Name of the default text domain.  */
+extern const char _nl_default_default_domain[];
+
+/* Default text domain in which entries for gettext(3) are to be found.  */
+extern const char *_nl_current_default_domain;
+
+
+/* Names for the libintl functions are a problem.  They must not clash
+   with existing names and they should follow ANSI C.  But this source
+   code is also used in GNU C Library where the names have a __
+   prefix.  So we have to make a difference here.  */
+#ifdef _LIBC
+# define TEXTDOMAIN __textdomain
+# ifndef strdup
+#  define strdup(str) __strdup (str)
+# endif
+#else
+# define TEXTDOMAIN textdomain__
+#endif
+
+/* Lock variable to protect the global data in the gettext implementation.  */
+__libc_rwlock_define (extern, _nl_state_lock)
+
+/* Set the current default message catalog to DOMAINNAME.
+   If DOMAINNAME is null, return the current default.
+   If DOMAINNAME is "", reset to the default of "messages".  */
+char *
+TEXTDOMAIN (domainname)
+     const char *domainname;
+{
+  char *new_domain;
+  char *old_domain;
+
+  /* A NULL pointer requests the current setting.  */
+  if (domainname == NULL)
+    return (char *) _nl_current_default_domain;
+
+  __libc_rwlock_wrlock (_nl_state_lock);
+
+  old_domain = (char *) _nl_current_default_domain;
+
+  /* If domain name is the null string set to default domain "messages".  */
+  if (domainname[0] == '\0'
+      || strcmp (domainname, _nl_default_default_domain) == 0)
+    {
+      _nl_current_default_domain = _nl_default_default_domain;
+      new_domain = (char *) _nl_current_default_domain;
+    }
+  else if (strcmp (domainname, old_domain) == 0)
+    /* This can happen and people will use it to signal that some
+       environment variable changed.  */
+    new_domain = old_domain;
+  else
+    {
+      /* If the following malloc fails `_nl_current_default_domain'
+	 will be NULL.  This value will be returned and so signals we
+	 are out of core.  */
+#if defined _LIBC || defined HAVE_STRDUP
+      new_domain = strdup (domainname);
+#else
+      size_t len = strlen (domainname) + 1;
+      new_domain = (char *) malloc (len);
+      if (new_domain != NULL)
+	memcpy (new_domain, domainname, len);
+#endif
+
+      if (new_domain != NULL)
+	_nl_current_default_domain = new_domain;
+    }
+
+  /* We use this possibility to signal a change of the loaded catalogs
+     since this is most likely the case and there is no other easy we
+     to do it.  Do it only when the call was successful.  */
+  if (new_domain != NULL)
+    {
+      ++_nl_msg_cat_cntr;
+
+      if (old_domain != new_domain && old_domain != _nl_default_default_domain)
+	free (old_domain);
+    }
+
+  __libc_rwlock_unlock (_nl_state_lock);
+
+  return new_domain;
+}
+
+#ifdef _LIBC
+/* Alias for function name in GNU C Library.  */
+weak_alias (__textdomain, textdomain);
+#endif
diff --git a/src/sed/lib/Makefile.am b/src/sed/lib/Makefile.am
new file mode 100644
index 0000000..8bc60d4
--- /dev/null
+++ b/src/sed/lib/Makefile.am
@@ -0,0 +1,16 @@
+## Process this file with automake to produce Makefile.in
+noinst_LIBRARIES = libsed.a
+noinst_HEADERS = getopt.h utils.h obstack.h regex_.h regex_internal.h \
+	strverscmp.h stdbool_.h
+
+libsed_a_SOURCES = getopt1.c getopt.c utils.c
+
+EXTRA_DIST = memmove.c strerror.c regcomp.c regexec.c regex_internal.c
+
+AM_CPPFLAGS = -I$(top_srcdir)/lib -I$(top_srcdir)/intl -I$(top_srcdir) \
+	-I$(top_builddir)/lib -I$(top_builddir)/intl
+
+libsed_a_LIBADD = @LIBOBJS@ @ALLOCA@
+libsed_a_DEPENDENCIES = $(libsed_a_LIBADD)
+
+DISTCLEANFILES = regex.h stdbool.h
diff --git a/src/sed/lib/Makefile.in b/src/sed/lib/Makefile.in
new file mode 100644
index 0000000..3cef6a0
--- /dev/null
+++ b/src/sed/lib/Makefile.in
@@ -0,0 +1,456 @@
+# Makefile.in generated by automake 1.9.5 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005  Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
+SOURCES = $(libsed_a_SOURCES)
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+top_builddir = ..
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+INSTALL = @INSTALL@
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+subdir = lib
+DIST_COMMON = $(noinst_HEADERS) $(srcdir)/Makefile.am \
+	$(srcdir)/Makefile.in $(srcdir)/regex_.h $(srcdir)/stdbool_.h \
+	alloca.c getline.c memchr.c memcmp.c memmove.c mkstemp.c \
+	obstack.c obstack.h regex.c strerror.c strverscmp.c
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/config/codeset.m4 \
+	$(top_srcdir)/config/getline.m4 \
+	$(top_srcdir)/config/gettext-ver.m4 \
+	$(top_srcdir)/config/gettext.m4 \
+	$(top_srcdir)/config/glibc21.m4 $(top_srcdir)/config/iconv.m4 \
+	$(top_srcdir)/config/lcmessage.m4 \
+	$(top_srcdir)/config/lib-ld.m4 \
+	$(top_srcdir)/config/lib-link.m4 \
+	$(top_srcdir)/config/lib-prefix.m4 \
+	$(top_srcdir)/config/progtest.m4 \
+	$(top_srcdir)/config/stdbool.m4 \
+	$(top_srcdir)/config/strverscmp.m4 $(top_srcdir)/configure.ac
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+	$(ACLOCAL_M4)
+mkinstalldirs = $(install_sh) -d
+CONFIG_HEADER = $(top_builddir)/config.h
+CONFIG_CLEAN_FILES = stdbool.h regex.h
+LIBRARIES = $(noinst_LIBRARIES)
+AR = ar
+ARFLAGS = cru
+libsed_a_AR = $(AR) $(ARFLAGS)
+am_libsed_a_OBJECTS = getopt1.$(OBJEXT) getopt.$(OBJEXT) \
+	utils.$(OBJEXT)
+libsed_a_OBJECTS = $(am_libsed_a_OBJECTS)
+DEFAULT_INCLUDES = -I. -I$(srcdir) -I$(top_builddir)
+depcomp = $(SHELL) $(top_srcdir)/config/depcomp
+am__depfiles_maybe = depfiles
+COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+CCLD = $(CC)
+LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+SOURCES = $(libsed_a_SOURCES)
+DIST_SOURCES = $(libsed_a_SOURCES)
+HEADERS = $(noinst_HEADERS)
+ETAGS = etags
+CTAGS = ctags
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+ACLOCAL = @ACLOCAL@
+ALLOCA = @ALLOCA@
+AMDEP_FALSE = @AMDEP_FALSE@
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+LDFLAGS = @LDFLAGS@
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+MAKEINFO = @MAKEINFO@
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+TEXI2HTML = @TEXI2HTML@
+TEXI2HTML_HTML_FALSE = @TEXI2HTML_HTML_FALSE@
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+target_alias = @target_alias@
+noinst_LIBRARIES = libsed.a
+noinst_HEADERS = getopt.h utils.h obstack.h regex_.h regex_internal.h \
+	strverscmp.h stdbool_.h
+
+libsed_a_SOURCES = getopt1.c getopt.c utils.c
+EXTRA_DIST = memmove.c strerror.c regcomp.c regexec.c regex_internal.c
+AM_CPPFLAGS = -I$(top_srcdir)/lib -I$(top_srcdir)/intl -I$(top_srcdir) \
+	-I$(top_builddir)/lib -I$(top_builddir)/intl
+
+libsed_a_LIBADD = @LIBOBJS@ @ALLOCA@
+libsed_a_DEPENDENCIES = $(libsed_a_LIBADD)
+DISTCLEANFILES = regex.h stdbool.h
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .o .obj
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh \
+		&& exit 0; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnits  lib/Makefile'; \
+	cd $(top_srcdir) && \
+	  $(AUTOMAKE) --gnits  lib/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+stdbool.h: $(top_builddir)/config.status $(srcdir)/stdbool_.h
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+
+clean-noinstLIBRARIES:
+	-test -z "$(noinst_LIBRARIES)" || rm -f $(noinst_LIBRARIES)
+libsed.a: $(libsed_a_OBJECTS) $(libsed_a_DEPENDENCIES) 
+	-rm -f libsed.a
+	$(libsed_a_AR) libsed.a $(libsed_a_OBJECTS) $(libsed_a_LIBADD)
+	$(RANLIB) libsed.a
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/alloca.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/getline.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/memchr.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/memcmp.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/memmove.Po@am__quote@
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+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/obstack.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/regex.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/strerror.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/strverscmp.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/getopt.Po@am__quote@
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+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/utils.Po@am__quote@
+
+.c.o:
+@am__fastdepCC_TRUE@	if $(COMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ $<; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Po"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(COMPILE) -c $<
+
+.c.obj:
+@am__fastdepCC_TRUE@	if $(COMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ `$(CYGPATH_W) '$<'`; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Po"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(COMPILE) -c `$(CYGPATH_W) '$<'`
+uninstall-info-am:
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	mkid -fID $$unique
+tags: TAGS
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	if test -z "$(ETAGS_ARGS)$$tags$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	    $$tags $$unique; \
+	fi
+ctags: CTAGS
+CTAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	test -z "$(CTAGS_ARGS)$$tags$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$tags $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && cd $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) $$here
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's|.|.|g'`; \
+	list='$(DISTFILES)'; for file in $$list; do \
+	  case $$file in \
+	    $(srcdir)/*) file=`echo "$$file" | sed "s|^$$srcdirstrip/||"`;; \
+	    $(top_srcdir)/*) file=`echo "$$file" | sed "s|^$$topsrcdirstrip/|$(top_builddir)/|"`;; \
+	  esac; \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \
+	  if test "$$dir" != "$$file" && test "$$dir" != "."; then \
+	    dir="/$$dir"; \
+	    $(mkdir_p) "$(distdir)$$dir"; \
+	  else \
+	    dir=''; \
+	  fi; \
+	  if test -d $$d/$$file; then \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
+	    fi; \
+	    cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
+	  else \
+	    test -f $(distdir)/$$file \
+	    || cp -p $$d/$$file $(distdir)/$$file \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LIBRARIES) $(HEADERS)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test -z "$(DISTCLEANFILES)" || rm -f $(DISTCLEANFILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-noinstLIBRARIES mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf $(DEPDIR) ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-exec-am:
+
+install-info: install-info-am
+
+install-man:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf $(DEPDIR) ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-info-am
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+	clean-noinstLIBRARIES ctags distclean distclean-compile \
+	distclean-generic distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-exec install-exec-am install-info \
+	install-info-am install-man install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic pdf pdf-am ps ps-am tags uninstall \
+	uninstall-am uninstall-info-am
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/sed/lib/alloca.c b/src/sed/lib/alloca.c
new file mode 100644
index 0000000..c1699c4
--- /dev/null
+++ b/src/sed/lib/alloca.c
@@ -0,0 +1,504 @@
+/* alloca.c -- allocate automatically reclaimed memory
+   (Mostly) portable public-domain implementation -- D A Gwyn
+
+   This implementation of the PWB library alloca function,
+   which is used to allocate space off the run-time stack so
+   that it is automatically reclaimed upon procedure exit,
+   was inspired by discussions with J. Q. Johnson of Cornell.
+   J.Otto Tennant <jot@cray.com> contributed the Cray support.
+
+   There are some preprocessor constants that can
+   be defined when compiling for your specific system, for
+   improved efficiency; however, the defaults should be okay.
+
+   The general concept of this implementation is to keep
+   track of all alloca-allocated blocks, and reclaim any
+   that are found to be deeper in the stack than the current
+   invocation.  This heuristic does not reclaim storage as
+   soon as it becomes invalid, but it will do so eventually.
+
+   As a special case, alloca(0) reclaims storage without
+   allocating any.  It is a good idea to use alloca(0) in
+   your main control loop, etc. to force garbage collection.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef emacs
+#include "blockinput.h"
+#endif
+
+/* If compiling with GCC 2, this file's not needed.  */
+#if !defined (__GNUC__) || __GNUC__ < 2
+
+/* If someone has defined alloca as a macro,
+   there must be some other way alloca is supposed to work.  */
+#ifndef alloca
+
+#ifdef emacs
+#ifdef static
+/* actually, only want this if static is defined as ""
+   -- this is for usg, in which emacs must undefine static
+   in order to make unexec workable
+   */
+#ifndef STACK_DIRECTION
+you
+lose
+-- must know STACK_DIRECTION at compile-time
+#endif /* STACK_DIRECTION undefined */
+#endif /* static */
+#endif /* emacs */
+
+/* If your stack is a linked list of frames, you have to
+   provide an "address metric" ADDRESS_FUNCTION macro.  */
+
+#if defined (CRAY) && defined (CRAY_STACKSEG_END)
+long i00afunc ();
+#define ADDRESS_FUNCTION(arg) (char *) i00afunc (&(arg))
+#else
+#define ADDRESS_FUNCTION(arg) &(arg)
+#endif
+
+#if __STDC__
+typedef void *pointer;
+#else
+typedef char *pointer;
+#endif
+
+#ifndef NULL
+#define	NULL	0
+#endif
+
+/* Different portions of Emacs need to call different versions of
+   malloc.  The Emacs executable needs alloca to call xmalloc, because
+   ordinary malloc isn't protected from input signals.  On the other
+   hand, the utilities in lib-src need alloca to call malloc; some of
+   them are very simple, and don't have an xmalloc routine.
+
+   Non-Emacs programs expect this to call xmalloc.
+
+   Callers below should use malloc.  */
+
+#ifndef emacs
+#define malloc xmalloc
+#endif
+extern pointer malloc ();
+
+/* Define STACK_DIRECTION if you know the direction of stack
+   growth for your system; otherwise it will be automatically
+   deduced at run-time.
+
+   STACK_DIRECTION > 0 => grows toward higher addresses
+   STACK_DIRECTION < 0 => grows toward lower addresses
+   STACK_DIRECTION = 0 => direction of growth unknown  */
+
+#ifndef STACK_DIRECTION
+#define	STACK_DIRECTION	0	/* Direction unknown.  */
+#endif
+
+#if STACK_DIRECTION != 0
+
+#define	STACK_DIR	STACK_DIRECTION	/* Known at compile-time.  */
+
+#else /* STACK_DIRECTION == 0; need run-time code.  */
+
+static int stack_dir;		/* 1 or -1 once known.  */
+#define	STACK_DIR	stack_dir
+
+static void
+find_stack_direction ()
+{
+  static char *addr = NULL;	/* Address of first `dummy', once known.  */
+  auto char dummy;		/* To get stack address.  */
+
+  if (addr == NULL)
+    {				/* Initial entry.  */
+      addr = ADDRESS_FUNCTION (dummy);
+
+      find_stack_direction ();	/* Recurse once.  */
+    }
+  else
+    {
+      /* Second entry.  */
+      if (ADDRESS_FUNCTION (dummy) > addr)
+	stack_dir = 1;		/* Stack grew upward.  */
+      else
+	stack_dir = -1;		/* Stack grew downward.  */
+    }
+}
+
+#endif /* STACK_DIRECTION == 0 */
+
+/* An "alloca header" is used to:
+   (a) chain together all alloca'ed blocks;
+   (b) keep track of stack depth.
+
+   It is very important that sizeof(header) agree with malloc
+   alignment chunk size.  The following default should work okay.  */
+
+#ifndef	ALIGN_SIZE
+#define	ALIGN_SIZE	sizeof(double)
+#endif
+
+typedef union hdr
+{
+  char align[ALIGN_SIZE];	/* To force sizeof(header).  */
+  struct
+    {
+      union hdr *next;		/* For chaining headers.  */
+      char *deep;		/* For stack depth measure.  */
+    } h;
+} header;
+
+static header *last_alloca_header = NULL;	/* -> last alloca header.  */
+
+/* Return a pointer to at least SIZE bytes of storage,
+   which will be automatically reclaimed upon exit from
+   the procedure that called alloca.  Originally, this space
+   was supposed to be taken from the current stack frame of the
+   caller, but that method cannot be made to work for some
+   implementations of C, for example under Gould's UTX/32.  */
+
+pointer
+alloca (size)
+     unsigned size;
+{
+  auto char probe;		/* Probes stack depth: */
+  register char *depth = ADDRESS_FUNCTION (probe);
+
+#if STACK_DIRECTION == 0
+  if (STACK_DIR == 0)		/* Unknown growth direction.  */
+    find_stack_direction ();
+#endif
+
+  /* Reclaim garbage, defined as all alloca'd storage that
+     was allocated from deeper in the stack than currently.  */
+
+  {
+    register header *hp;	/* Traverses linked list.  */
+
+#ifdef emacs
+    BLOCK_INPUT;
+#endif
+
+    for (hp = last_alloca_header; hp != NULL;)
+      if ((STACK_DIR > 0 && hp->h.deep > depth)
+	  || (STACK_DIR < 0 && hp->h.deep < depth))
+	{
+	  register header *np = hp->h.next;
+
+	  free ((pointer) hp);	/* Collect garbage.  */
+
+	  hp = np;		/* -> next header.  */
+	}
+      else
+	break;			/* Rest are not deeper.  */
+
+    last_alloca_header = hp;	/* -> last valid storage.  */
+
+#ifdef emacs
+    UNBLOCK_INPUT;
+#endif
+  }
+
+  if (size == 0)
+    return NULL;		/* No allocation required.  */
+
+  /* Allocate combined header + user data storage.  */
+
+  {
+    register pointer new = malloc (sizeof (header) + size);
+    /* Address of header.  */
+
+    if (new == 0)
+      abort();
+
+    ((header *) new)->h.next = last_alloca_header;
+    ((header *) new)->h.deep = depth;
+
+    last_alloca_header = (header *) new;
+
+    /* User storage begins just after header.  */
+
+    return (pointer) ((char *) new + sizeof (header));
+  }
+}
+
+#if defined (CRAY) && defined (CRAY_STACKSEG_END)
+
+#ifdef DEBUG_I00AFUNC
+#include <stdio.h>
+#endif
+
+#ifndef CRAY_STACK
+#define CRAY_STACK
+#ifndef CRAY2
+/* Stack structures for CRAY-1, CRAY X-MP, and CRAY Y-MP */
+struct stack_control_header
+  {
+    long shgrow:32;		/* Number of times stack has grown.  */
+    long shaseg:32;		/* Size of increments to stack.  */
+    long shhwm:32;		/* High water mark of stack.  */
+    long shsize:32;		/* Current size of stack (all segments).  */
+  };
+
+/* The stack segment linkage control information occurs at
+   the high-address end of a stack segment.  (The stack
+   grows from low addresses to high addresses.)  The initial
+   part of the stack segment linkage control information is
+   0200 (octal) words.  This provides for register storage
+   for the routine which overflows the stack.  */
+
+struct stack_segment_linkage
+  {
+    long ss[0200];		/* 0200 overflow words.  */
+    long sssize:32;		/* Number of words in this segment.  */
+    long ssbase:32;		/* Offset to stack base.  */
+    long:32;
+    long sspseg:32;		/* Offset to linkage control of previous
+				   segment of stack.  */
+    long:32;
+    long sstcpt:32;		/* Pointer to task common address block.  */
+    long sscsnm;		/* Private control structure number for
+				   microtasking.  */
+    long ssusr1;		/* Reserved for user.  */
+    long ssusr2;		/* Reserved for user.  */
+    long sstpid;		/* Process ID for pid based multi-tasking.  */
+    long ssgvup;		/* Pointer to multitasking thread giveup.  */
+    long sscray[7];		/* Reserved for Cray Research.  */
+    long ssa0;
+    long ssa1;
+    long ssa2;
+    long ssa3;
+    long ssa4;
+    long ssa5;
+    long ssa6;
+    long ssa7;
+    long sss0;
+    long sss1;
+    long sss2;
+    long sss3;
+    long sss4;
+    long sss5;
+    long sss6;
+    long sss7;
+  };
+
+#else /* CRAY2 */
+/* The following structure defines the vector of words
+   returned by the STKSTAT library routine.  */
+struct stk_stat
+  {
+    long now;			/* Current total stack size.  */
+    long maxc;			/* Amount of contiguous space which would
+				   be required to satisfy the maximum
+				   stack demand to date.  */
+    long high_water;		/* Stack high-water mark.  */
+    long overflows;		/* Number of stack overflow ($STKOFEN) calls.  */
+    long hits;			/* Number of internal buffer hits.  */
+    long extends;		/* Number of block extensions.  */
+    long stko_mallocs;		/* Block allocations by $STKOFEN.  */
+    long underflows;		/* Number of stack underflow calls ($STKRETN).  */
+    long stko_free;		/* Number of deallocations by $STKRETN.  */
+    long stkm_free;		/* Number of deallocations by $STKMRET.  */
+    long segments;		/* Current number of stack segments.  */
+    long maxs;			/* Maximum number of stack segments so far.  */
+    long pad_size;		/* Stack pad size.  */
+    long current_address;	/* Current stack segment address.  */
+    long current_size;		/* Current stack segment size.  This
+				   number is actually corrupted by STKSTAT to
+				   include the fifteen word trailer area.  */
+    long initial_address;	/* Address of initial segment.  */
+    long initial_size;		/* Size of initial segment.  */
+  };
+
+/* The following structure describes the data structure which trails
+   any stack segment.  I think that the description in 'asdef' is
+   out of date.  I only describe the parts that I am sure about.  */
+
+struct stk_trailer
+  {
+    long this_address;		/* Address of this block.  */
+    long this_size;		/* Size of this block (does not include
+				   this trailer).  */
+    long unknown2;
+    long unknown3;
+    long link;			/* Address of trailer block of previous
+				   segment.  */
+    long unknown5;
+    long unknown6;
+    long unknown7;
+    long unknown8;
+    long unknown9;
+    long unknown10;
+    long unknown11;
+    long unknown12;
+    long unknown13;
+    long unknown14;
+  };
+
+#endif /* CRAY2 */
+#endif /* not CRAY_STACK */
+
+#ifdef CRAY2
+/* Determine a "stack measure" for an arbitrary ADDRESS.
+   I doubt that "lint" will like this much.  */
+
+static long
+i00afunc (long *address)
+{
+  struct stk_stat status;
+  struct stk_trailer *trailer;
+  long *block, size;
+  long result = 0;
+
+  /* We want to iterate through all of the segments.  The first
+     step is to get the stack status structure.  We could do this
+     more quickly and more directly, perhaps, by referencing the
+     $LM00 common block, but I know that this works.  */
+
+  STKSTAT (&status);
+
+  /* Set up the iteration.  */
+
+  trailer = (struct stk_trailer *) (status.current_address
+				    + status.current_size
+				    - 15);
+
+  /* There must be at least one stack segment.  Therefore it is
+     a fatal error if "trailer" is null.  */
+
+  if (trailer == 0)
+    abort ();
+
+  /* Discard segments that do not contain our argument address.  */
+
+  while (trailer != 0)
+    {
+      block = (long *) trailer->this_address;
+      size = trailer->this_size;
+      if (block == 0 || size == 0)
+	abort ();
+      trailer = (struct stk_trailer *) trailer->link;
+      if ((block <= address) && (address < (block + size)))
+	break;
+    }
+
+  /* Set the result to the offset in this segment and add the sizes
+     of all predecessor segments.  */
+
+  result = address - block;
+
+  if (trailer == 0)
+    {
+      return result;
+    }
+
+  do
+    {
+      if (trailer->this_size <= 0)
+	abort ();
+      result += trailer->this_size;
+      trailer = (struct stk_trailer *) trailer->link;
+    }
+  while (trailer != 0);
+
+  /* We are done.  Note that if you present a bogus address (one
+     not in any segment), you will get a different number back, formed
+     from subtracting the address of the first block.  This is probably
+     not what you want.  */
+
+  return (result);
+}
+
+#else /* not CRAY2 */
+/* Stack address function for a CRAY-1, CRAY X-MP, or CRAY Y-MP.
+   Determine the number of the cell within the stack,
+   given the address of the cell.  The purpose of this
+   routine is to linearize, in some sense, stack addresses
+   for alloca.  */
+
+static long
+i00afunc (long address)
+{
+  long stkl = 0;
+
+  long size, pseg, this_segment, stack;
+  long result = 0;
+
+  struct stack_segment_linkage *ssptr;
+
+  /* Register B67 contains the address of the end of the
+     current stack segment.  If you (as a subprogram) store
+     your registers on the stack and find that you are past
+     the contents of B67, you have overflowed the segment.
+
+     B67 also points to the stack segment linkage control
+     area, which is what we are really interested in.  */
+
+  stkl = CRAY_STACKSEG_END ();
+  ssptr = (struct stack_segment_linkage *) stkl;
+
+  /* If one subtracts 'size' from the end of the segment,
+     one has the address of the first word of the segment.
+
+     If this is not the first segment, 'pseg' will be
+     nonzero.  */
+
+  pseg = ssptr->sspseg;
+  size = ssptr->sssize;
+
+  this_segment = stkl - size;
+
+  /* It is possible that calling this routine itself caused
+     a stack overflow.  Discard stack segments which do not
+     contain the target address.  */
+
+  while (!(this_segment <= address && address <= stkl))
+    {
+#ifdef DEBUG_I00AFUNC
+      fprintf (stderr, "%011o %011o %011o\n", this_segment, address, stkl);
+#endif
+      if (pseg == 0)
+	break;
+      stkl = stkl - pseg;
+      ssptr = (struct stack_segment_linkage *) stkl;
+      size = ssptr->sssize;
+      pseg = ssptr->sspseg;
+      this_segment = stkl - size;
+    }
+
+  result = address - this_segment;
+
+  /* If you subtract pseg from the current end of the stack,
+     you get the address of the previous stack segment's end.
+     This seems a little convoluted to me, but I'll bet you save
+     a cycle somewhere.  */
+
+  while (pseg != 0)
+    {
+#ifdef DEBUG_I00AFUNC
+      fprintf (stderr, "%011o %011o\n", pseg, size);
+#endif
+      stkl = stkl - pseg;
+      ssptr = (struct stack_segment_linkage *) stkl;
+      size = ssptr->sssize;
+      pseg = ssptr->sspseg;
+      result += size;
+    }
+  return (result);
+}
+
+#endif /* not CRAY2 */
+#endif /* CRAY */
+
+#endif /* no alloca */
+#endif /* not GCC version 2 */
diff --git a/src/sed/lib/getline.c b/src/sed/lib/getline.c
new file mode 100644
index 0000000..4cb9d45
--- /dev/null
+++ b/src/sed/lib/getline.c
@@ -0,0 +1,112 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#undef _GNU_SOURCE
+
+#include <sys/types.h>
+#define getline stdio_getline   /* bird */
+#include <stdio.h>
+#undef getline 			/* bird */
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#else
+# include <string.h>
+#endif /* HAVE_STRINGS_H */
+
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif /* HAVE_STDLIB_H */
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#include <limits.h>
+#include <errno.h>
+
+/* Read up to (and including) a '\n' from STREAM into *LINEPTR
+   (and null-terminate it). *LINEPTR is a pointer returned from malloc (or
+   NULL), pointing to *N characters of space.  It is realloc'd as
+   necessary.  Returns the number of characters read (not including the
+   null terminator), or -1 on error or EOF.  */
+
+size_t
+getline (lineptr, n, stream)
+     char **lineptr;
+     size_t *n;
+     FILE *stream;
+{
+  char *line, *p;
+  long size, copy;
+
+  if (lineptr == NULL || n == NULL)
+    {
+      errno = EINVAL;
+      return (size_t) -1;
+    }
+
+  if (ferror (stream))
+    return (size_t) -1;
+
+  /* Make sure we have a line buffer to start with.  */
+  if (*lineptr == NULL || *n < 2) /* !seen and no buf yet need 2 chars.  */
+    {
+#ifndef	MAX_CANON
+#define	MAX_CANON	256
+#endif
+      if (!*lineptr)
+        line = (char *) malloc (MAX_CANON);
+      else
+        line = (char *) realloc (*lineptr, MAX_CANON);
+      if (line == NULL)
+	return (size_t) -1;
+      *lineptr = line;
+      *n = MAX_CANON;
+    }
+
+  line = *lineptr;
+  size = *n;
+
+  copy = size;
+  p = line;
+
+  while (1)
+    {
+      long len;
+      
+      while (--copy > 0)
+	{
+	  register int c = getc (stream);
+	  if (c == EOF)
+	    goto lose;
+	  else if ((*p++ = c) == '\n')
+	    goto win;
+	}
+      
+      /* Need to enlarge the line buffer.  */
+      len = p - line;
+      size *= 2;
+      line = (char *) realloc (line, size);
+      if (line == NULL)
+	goto lose;
+      *lineptr = line;
+      *n = size;
+      p = line + len;
+      copy = size - len;
+    }
+
+ lose:
+  if (p == *lineptr)
+    return (size_t) -1;
+
+  /* Return a partial line since we got an error in the middle.  */
+ win:
+#if defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__) || defined(MSDOS) || defined(__EMX__)
+  if (p - 2 >= *lineptr && p[-2] == '\r')
+    p[-2] = p[-1], --p;
+#endif
+  *p = '\0';
+  return p - *lineptr;
+}
diff --git a/src/sed/lib/getopt.c b/src/sed/lib/getopt.c
new file mode 100644
index 0000000..d341fe0
--- /dev/null
+++ b/src/sed/lib/getopt.c
@@ -0,0 +1,1058 @@
+/* Getopt for GNU.
+   NOTE: getopt is now part of the C library, so if you don't know what
+   "Keep this file name-space clean" means, talk to drepper@gnu.org
+   before changing it!
+
+   Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98
+   	Free Software Foundation, Inc.
+
+   NOTE: The canonical source of this file is maintained with the GNU C Library.
+   Bugs can be reported to bug-glibc@gnu.org.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
+   Ditto for AIX 3.2 and <stdlib.h>.  */
+#ifndef _NO_PROTO
+# define _NO_PROTO
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if !defined __STDC__ || !__STDC__
+/* This is a separate conditional since some stdc systems
+   reject `defined (const)'.  */
+# ifndef const
+#  define const
+# endif
+#endif
+
+#include <stdio.h>
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#define GETOPT_INTERFACE_VERSION 2
+#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
+# include <gnu-versions.h>
+# if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
+#  define ELIDE_CODE
+# endif
+#endif
+
+#ifndef ELIDE_CODE
+
+
+/* This needs to come after some library #include
+   to get __GNU_LIBRARY__ defined.  */
+#ifdef	__GNU_LIBRARY__
+/* Don't include stdlib.h for non-GNU C libraries because some of them
+   contain conflicting prototypes for getopt.  */
+# include <stdlib.h>
+# include <unistd.h>
+#endif	/* GNU C library.  */
+
+#ifdef VMS
+# include <unixlib.h>
+# if HAVE_STRING_H - 0
+#  include <string.h>
+# endif
+#endif
+
+#ifndef _
+/* This is for other GNU distributions with internationalized messages.
+   When compiling libc, the _ macro is predefined.  */
+# ifdef HAVE_LIBINTL_H
+#  include <libintl.h>
+#  define _(msgid)	gettext (msgid)
+# else
+#  define _(msgid)	(msgid)
+# endif
+#endif
+
+/* This version of `getopt' appears to the caller like standard Unix `getopt'
+   but it behaves differently for the user, since it allows the user
+   to intersperse the options with the other arguments.
+
+   As `getopt' works, it permutes the elements of ARGV so that,
+   when it is done, all the options precede everything else.  Thus
+   all application programs are extended to handle flexible argument order.
+
+   Setting the environment variable POSIXLY_CORRECT disables permutation.
+   Then the behavior is completely standard.
+
+   GNU application programs can use a third alternative mode in which
+   they can distinguish the relative order of options and other arguments.  */
+
+#include "getopt.h"
+
+/* For communication from `getopt' to the caller.
+   When `getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+char *optarg = NULL;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to `getopt'.
+
+   On entry to `getopt', zero means this is the first call; initialize.
+
+   When `getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+/* 1003.2 says this must be 1 before any call.  */
+int optind = 1;
+
+/* Formerly, initialization of getopt depended on optind==0, which
+   causes problems with re-calling getopt as programs generally don't
+   know that. */
+
+int __getopt_initialized = 0;
+
+/* The next char to be scanned in the option-element
+   in which the last option character we returned was found.
+   This allows us to pick up the scan where we left off.
+
+   If this is zero, or a null string, it means resume the scan
+   by advancing to the next ARGV-element.  */
+
+static char *nextchar;
+
+/* Callers store zero here to inhibit the error message
+   for unrecognized options.  */
+
+int opterr = 1;
+
+/* Set to an option character which was unrecognized.
+   This must be initialized on some systems to avoid linking in the
+   system's own getopt implementation.  */
+
+int optopt = '?';
+
+/* Describe how to deal with options that follow non-option ARGV-elements.
+
+   If the caller did not specify anything,
+   the default is REQUIRE_ORDER if the environment variable
+   POSIXLY_CORRECT is defined, PERMUTE otherwise.
+
+   REQUIRE_ORDER means don't recognize them as options;
+   stop option processing when the first non-option is seen.
+   This is what Unix does.
+   This mode of operation is selected by either setting the environment
+   variable POSIXLY_CORRECT, or using `+' as the first character
+   of the list of option characters.
+
+   PERMUTE is the default.  We permute the contents of ARGV as we scan,
+   so that eventually all the non-options are at the end.  This allows options
+   to be given in any order, even with programs that were not written to
+   expect this.
+
+   RETURN_IN_ORDER is an option available to programs that were written
+   to expect options and other ARGV-elements in any order and that care about
+   the ordering of the two.  We describe each non-option ARGV-element
+   as if it were the argument of an option with character code 1.
+   Using `-' as the first character of the list of option characters
+   selects this mode of operation.
+
+   The special argument `--' forces an end of option-scanning regardless
+   of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
+   `--' can cause `getopt' to return -1 with `optind' != ARGC.  */
+
+static enum
+{
+  REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
+} ordering;
+
+/* Value of POSIXLY_CORRECT environment variable.  */
+static char *posixly_correct;
+
+#ifdef	__GNU_LIBRARY__
+/* We want to avoid inclusion of string.h with non-GNU libraries
+   because there are many ways it can cause trouble.
+   On some systems, it contains special magic macros that don't work
+   in GCC.  */
+# include <string.h>
+# define my_index	strchr
+
+#elif defined(_MSC_VER) || defined(__APPLE__) || defined(__FreeBSD__) \
+   || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__sun__) \
+   || defined(__OS2__) || defined(__DragonFly__)
+# include <stdlib.h>
+# include <string.h>
+# include <stdio.h>
+# define my_index	strchr
+
+#else
+
+/* Avoid depending on library functions or files
+   whose names are inconsistent.  */
+
+#ifndef getenv
+extern char *getenv ();
+#endif
+#ifndef strncmp
+extern int strncmp ();
+#endif
+
+static char *
+my_index (str, chr)
+     const char *str;
+     int chr;
+{
+  while (*str)
+    {
+      if (*str == chr)
+	return (char *) str;
+      str++;
+    }
+  return 0;
+}
+
+/* If using GCC, we can safely declare strlen this way.
+   If not using GCC, it is ok not to declare it.  */
+#ifdef __GNUC__
+/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
+   That was relevant to code that was here before.  */
+# if (!defined __STDC__ || !__STDC__) && !defined strlen
+/* gcc with -traditional declares the built-in strlen to return int,
+   and has done so at least since version 2.4.5. -- rms.  */
+extern int strlen (const char *);
+# endif /* not __STDC__ */
+#endif /* __GNUC__ */
+
+#endif /* not __GNU_LIBRARY__ */
+
+/* Handle permutation of arguments.  */
+
+/* Describe the part of ARGV that contains non-options that have
+   been skipped.  `first_nonopt' is the index in ARGV of the first of them;
+   `last_nonopt' is the index after the last of them.  */
+
+static int first_nonopt;
+static int last_nonopt;
+
+#ifdef _LIBC
+/* Bash 2.0 gives us an environment variable containing flags
+   indicating ARGV elements that should not be considered arguments.  */
+
+/* Defined in getopt_init.c  */
+extern char *__getopt_nonoption_flags;
+
+static int nonoption_flags_max_len;
+static int nonoption_flags_len;
+
+static int original_argc;
+static char *const *original_argv;
+
+/* Make sure the environment variable bash 2.0 puts in the environment
+   is valid for the getopt call we must make sure that the ARGV passed
+   to getopt is that one passed to the process.  */
+static void
+__attribute__ ((unused))
+store_args_and_env (int argc, char *const *argv)
+{
+  /* XXX This is no good solution.  We should rather copy the args so
+     that we can compare them later.  But we must not use malloc(3).  */
+  original_argc = argc;
+  original_argv = argv;
+}
+# ifdef text_set_element
+text_set_element (__libc_subinit, store_args_and_env);
+# endif /* text_set_element */
+
+# define SWAP_FLAGS(ch1, ch2) \
+  if (nonoption_flags_len > 0)						      \
+    {									      \
+      char __tmp = __getopt_nonoption_flags[ch1];			      \
+      __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2];	      \
+      __getopt_nonoption_flags[ch2] = __tmp;				      \
+    }
+#else	/* !_LIBC */
+# define SWAP_FLAGS(ch1, ch2)
+#endif	/* _LIBC */
+
+/* Exchange two adjacent subsequences of ARGV.
+   One subsequence is elements [first_nonopt,last_nonopt)
+   which contains all the non-options that have been skipped so far.
+   The other is elements [last_nonopt,optind), which contains all
+   the options processed since those non-options were skipped.
+
+   `first_nonopt' and `last_nonopt' are relocated so that they describe
+   the new indices of the non-options in ARGV after they are moved.  */
+
+#if defined __STDC__ && __STDC__
+static void exchange (char **);
+#endif
+
+static void
+exchange (argv)
+     char **argv;
+{
+  int bottom = first_nonopt;
+  int middle = last_nonopt;
+  int top = optind;
+  char *tem;
+
+  /* Exchange the shorter segment with the far end of the longer segment.
+     That puts the shorter segment into the right place.
+     It leaves the longer segment in the right place overall,
+     but it consists of two parts that need to be swapped next.  */
+
+#ifdef _LIBC
+  /* First make sure the handling of the `__getopt_nonoption_flags'
+     string can work normally.  Our top argument must be in the range
+     of the string.  */
+  if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
+    {
+      /* We must extend the array.  The user plays games with us and
+	 presents new arguments.  */
+      char *new_str = malloc (top + 1);
+      if (new_str == NULL)
+	nonoption_flags_len = nonoption_flags_max_len = 0;
+      else
+	{
+	  memset (__mempcpy (new_str, __getopt_nonoption_flags,
+			     nonoption_flags_max_len),
+		  '\0', top + 1 - nonoption_flags_max_len);
+	  nonoption_flags_max_len = top + 1;
+	  __getopt_nonoption_flags = new_str;
+	}
+    }
+#endif
+
+  while (top > middle && middle > bottom)
+    {
+      if (top - middle > middle - bottom)
+	{
+	  /* Bottom segment is the short one.  */
+	  int len = middle - bottom;
+	  register int i;
+
+	  /* Swap it with the top part of the top segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[top - (middle - bottom) + i];
+	      argv[top - (middle - bottom) + i] = tem;
+	      SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
+	    }
+	  /* Exclude the moved bottom segment from further swapping.  */
+	  top -= len;
+	}
+      else
+	{
+	  /* Top segment is the short one.  */
+	  int len = top - middle;
+	  register int i;
+
+	  /* Swap it with the bottom part of the bottom segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[middle + i];
+	      argv[middle + i] = tem;
+	      SWAP_FLAGS (bottom + i, middle + i);
+	    }
+	  /* Exclude the moved top segment from further swapping.  */
+	  bottom += len;
+	}
+    }
+
+  /* Update records for the slots the non-options now occupy.  */
+
+  first_nonopt += (optind - last_nonopt);
+  last_nonopt = optind;
+}
+
+/* Initialize the internal data when the first call is made.  */
+
+#if defined __STDC__ && __STDC__
+static const char *_getopt_initialize (int, char *const *, const char *);
+#endif
+static const char *
+_getopt_initialize (argc, argv, optstring)
+     int argc;
+     char *const *argv;
+     const char *optstring;
+{
+  /* Start processing options with ARGV-element 1 (since ARGV-element 0
+     is the program name); the sequence of previously skipped
+     non-option ARGV-elements is empty.  */
+
+  first_nonopt = last_nonopt = optind;
+
+  nextchar = NULL;
+
+  posixly_correct = getenv ("POSIXLY_CORRECT");
+
+  /* Determine how to handle the ordering of options and nonoptions.  */
+
+  if (optstring[0] == '-')
+    {
+      ordering = RETURN_IN_ORDER;
+      ++optstring;
+    }
+  else if (optstring[0] == '+')
+    {
+      ordering = REQUIRE_ORDER;
+      ++optstring;
+    }
+  else if (posixly_correct != NULL)
+    ordering = REQUIRE_ORDER;
+  else
+    ordering = PERMUTE;
+
+#ifdef _LIBC
+  if (posixly_correct == NULL
+      && argc == original_argc && argv == original_argv)
+    {
+      if (nonoption_flags_max_len == 0)
+	{
+	  if (__getopt_nonoption_flags == NULL
+	      || __getopt_nonoption_flags[0] == '\0')
+	    nonoption_flags_max_len = -1;
+	  else
+	    {
+	      const char *orig_str = __getopt_nonoption_flags;
+	      int len = nonoption_flags_max_len = strlen (orig_str);
+	      if (nonoption_flags_max_len < argc)
+		nonoption_flags_max_len = argc;
+	      __getopt_nonoption_flags =
+		(char *) malloc (nonoption_flags_max_len);
+	      if (__getopt_nonoption_flags == NULL)
+		nonoption_flags_max_len = -1;
+	      else
+		memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
+			'\0', nonoption_flags_max_len - len);
+	    }
+	}
+      nonoption_flags_len = nonoption_flags_max_len;
+    }
+  else
+    nonoption_flags_len = 0;
+#endif
+
+  return optstring;
+}
+
+/* Scan elements of ARGV (whose length is ARGC) for option characters
+   given in OPTSTRING.
+
+   If an element of ARGV starts with '-', and is not exactly "-" or "--",
+   then it is an option element.  The characters of this element
+   (aside from the initial '-') are option characters.  If `getopt'
+   is called repeatedly, it returns successively each of the option characters
+   from each of the option elements.
+
+   If `getopt' finds another option character, it returns that character,
+   updating `optind' and `nextchar' so that the next call to `getopt' can
+   resume the scan with the following option character or ARGV-element.
+
+   If there are no more option characters, `getopt' returns -1.
+   Then `optind' is the index in ARGV of the first ARGV-element
+   that is not an option.  (The ARGV-elements have been permuted
+   so that those that are not options now come last.)
+
+   OPTSTRING is a string containing the legitimate option characters.
+   If an option character is seen that is not listed in OPTSTRING,
+   return '?' after printing an error message.  If you set `opterr' to
+   zero, the error message is suppressed but we still return '?'.
+
+   If a char in OPTSTRING is followed by a colon, that means it wants an arg,
+   so the following text in the same ARGV-element, or the text of the following
+   ARGV-element, is returned in `optarg'.  Two colons mean an option that
+   wants an optional arg; if there is text in the current ARGV-element,
+   it is returned in `optarg', otherwise `optarg' is set to zero.
+
+   If OPTSTRING starts with `-' or `+', it requests different methods of
+   handling the non-option ARGV-elements.
+   See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
+
+   Long-named options begin with `--' instead of `-'.
+   Their names may be abbreviated as long as the abbreviation is unique
+   or is an exact match for some defined option.  If they have an
+   argument, it follows the option name in the same ARGV-element, separated
+   from the option name by a `=', or else the in next ARGV-element.
+   When `getopt' finds a long-named option, it returns 0 if that option's
+   `flag' field is nonzero, the value of the option's `val' field
+   if the `flag' field is zero.
+
+   The elements of ARGV aren't really const, because we permute them.
+   But we pretend they're const in the prototype to be compatible
+   with other systems.
+
+   LONGOPTS is a vector of `struct option' terminated by an
+   element containing a name which is zero.
+
+   LONGIND returns the index in LONGOPT of the long-named option found.
+   It is only valid when a long-named option has been found by the most
+   recent call.
+
+   If LONG_ONLY is nonzero, '-' as well as '--' can introduce
+   long-named options.  */
+
+int
+_getopt_internal (argc, argv, optstring, longopts, longind, long_only)
+     int argc;
+     char *const *argv;
+     const char *optstring;
+     const struct option *longopts;
+     int *longind;
+     int long_only;
+{
+  optarg = NULL;
+
+  if (optind == 0 || !__getopt_initialized)
+    {
+      if (optind == 0)
+	optind = 1;	/* Don't scan ARGV[0], the program name.  */
+      optstring = _getopt_initialize (argc, argv, optstring);
+      __getopt_initialized = 1;
+    }
+
+  /* Test whether ARGV[optind] points to a non-option argument.
+     Either it does not have option syntax, or there is an environment flag
+     from the shell indicating it is not an option.  The later information
+     is only used when the used in the GNU libc.  */
+#ifdef _LIBC
+# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0'	      \
+		      || (optind < nonoption_flags_len			      \
+			  && __getopt_nonoption_flags[optind] == '1'))
+#else
+# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
+#endif
+
+  if (nextchar == NULL || *nextchar == '\0')
+    {
+      /* Advance to the next ARGV-element.  */
+
+      /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
+	 moved back by the user (who may also have changed the arguments).  */
+      if (last_nonopt > optind)
+	last_nonopt = optind;
+      if (first_nonopt > optind)
+	first_nonopt = optind;
+
+      if (ordering == PERMUTE)
+	{
+	  /* If we have just processed some options following some non-options,
+	     exchange them so that the options come first.  */
+
+	  if (first_nonopt != last_nonopt && last_nonopt != optind)
+	    exchange ((char **) argv);
+	  else if (last_nonopt != optind)
+	    first_nonopt = optind;
+
+	  /* Skip any additional non-options
+	     and extend the range of non-options previously skipped.  */
+
+	  while (optind < argc && NONOPTION_P)
+	    optind++;
+	  last_nonopt = optind;
+	}
+
+      /* The special ARGV-element `--' means premature end of options.
+	 Skip it like a null option,
+	 then exchange with previous non-options as if it were an option,
+	 then skip everything else like a non-option.  */
+
+      if (optind != argc && !strcmp (argv[optind], "--"))
+	{
+	  optind++;
+
+	  if (first_nonopt != last_nonopt && last_nonopt != optind)
+	    exchange ((char **) argv);
+	  else if (first_nonopt == last_nonopt)
+	    first_nonopt = optind;
+	  last_nonopt = argc;
+
+	  optind = argc;
+	}
+
+      /* If we have done all the ARGV-elements, stop the scan
+	 and back over any non-options that we skipped and permuted.  */
+
+      if (optind == argc)
+	{
+	  /* Set the next-arg-index to point at the non-options
+	     that we previously skipped, so the caller will digest them.  */
+	  if (first_nonopt != last_nonopt)
+	    optind = first_nonopt;
+	  return -1;
+	}
+
+      /* If we have come to a non-option and did not permute it,
+	 either stop the scan or describe it to the caller and pass it by.  */
+
+      if (NONOPTION_P)
+	{
+	  if (ordering == REQUIRE_ORDER)
+	    return -1;
+	  optarg = argv[optind++];
+	  return 1;
+	}
+
+      /* We have found another option-ARGV-element.
+	 Skip the initial punctuation.  */
+
+      nextchar = (argv[optind] + 1
+		  + (longopts != NULL && argv[optind][1] == '-'));
+    }
+
+  /* Decode the current option-ARGV-element.  */
+
+  /* Check whether the ARGV-element is a long option.
+
+     If long_only and the ARGV-element has the form "-f", where f is
+     a valid short option, don't consider it an abbreviated form of
+     a long option that starts with f.  Otherwise there would be no
+     way to give the -f short option.
+
+     On the other hand, if there's a long option "fubar" and
+     the ARGV-element is "-fu", do consider that an abbreviation of
+     the long option, just like "--fu", and not "-f" with arg "u".
+
+     This distinction seems to be the most useful approach.  */
+
+  if (longopts != NULL
+      && (argv[optind][1] == '-'
+	  || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
+    {
+      char *nameend;
+      const struct option *p;
+      const struct option *pfound = NULL;
+      int exact = 0;
+      int ambig = 0;
+      int indfound = -1;
+      int option_index;
+
+      for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
+	/* Do nothing.  */ ;
+
+      /* Test all long options for either exact match
+	 or abbreviated matches.  */
+      for (p = longopts, option_index = 0; p->name; p++, option_index++)
+	if (!strncmp (p->name, nextchar, nameend - nextchar))
+	  {
+	    if ((unsigned int) (nameend - nextchar)
+		== (unsigned int) strlen (p->name))
+	      {
+		/* Exact match found.  */
+		pfound = p;
+		indfound = option_index;
+		exact = 1;
+		break;
+	      }
+	    else if (pfound == NULL)
+	      {
+		/* First nonexact match found.  */
+		pfound = p;
+		indfound = option_index;
+	      }
+	    else
+	      /* Second or later nonexact match found.  */
+	      ambig = 1;
+	  }
+
+      if (ambig && !exact)
+	{
+	  if (opterr)
+	    fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
+		     argv[0], argv[optind]);
+	  nextchar += strlen (nextchar);
+	  optind++;
+	  optopt = 0;
+	  return '?';
+	}
+
+      if (pfound != NULL)
+	{
+	  option_index = indfound;
+	  optind++;
+	  if (*nameend)
+	    {
+	      /* Don't test has_arg with >, because some C compilers don't
+		 allow it to be used on enums.  */
+	      if (pfound->has_arg)
+		optarg = nameend + 1;
+	      else
+		{
+		  if (opterr)
+		   if (argv[optind - 1][1] == '-')
+		    /* --option */
+		    fprintf (stderr,
+		     _("%s: option `--%s' doesn't allow an argument\n"),
+		     argv[0], pfound->name);
+		   else
+		    /* +option or -option */
+		    fprintf (stderr,
+		     _("%s: option `%c%s' doesn't allow an argument\n"),
+		     argv[0], argv[optind - 1][0], pfound->name);
+
+		  nextchar += strlen (nextchar);
+
+		  optopt = pfound->val;
+		  return '?';
+		}
+	    }
+	  else if (pfound->has_arg == 1)
+	    {
+	      if (optind < argc)
+		optarg = argv[optind++];
+	      else
+		{
+		  if (opterr)
+		    fprintf (stderr,
+			   _("%s: option `%s' requires an argument\n"),
+			   argv[0], argv[optind - 1]);
+		  nextchar += strlen (nextchar);
+		  optopt = pfound->val;
+		  return optstring[0] == ':' ? ':' : '?';
+		}
+	    }
+	  nextchar += strlen (nextchar);
+	  if (longind != NULL)
+	    *longind = option_index;
+	  if (pfound->flag)
+	    {
+	      *(pfound->flag) = pfound->val;
+	      return 0;
+	    }
+	  return pfound->val;
+	}
+
+      /* Can't find it as a long option.  If this is not getopt_long_only,
+	 or the option starts with '--' or is not a valid short
+	 option, then it's an error.
+	 Otherwise interpret it as a short option.  */
+      if (!long_only || argv[optind][1] == '-'
+	  || my_index (optstring, *nextchar) == NULL)
+	{
+	  if (opterr)
+	    {
+	      if (argv[optind][1] == '-')
+		/* --option */
+		fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
+			 argv[0], nextchar);
+	      else
+		/* +option or -option */
+		fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
+			 argv[0], argv[optind][0], nextchar);
+	    }
+	  nextchar = (char *) "";
+	  optind++;
+	  optopt = 0;
+	  return '?';
+	}
+    }
+
+  /* Look at and handle the next short option-character.  */
+
+  {
+    char c = *nextchar++;
+    char *temp = my_index (optstring, c);
+
+    /* Increment `optind' when we start to process its last character.  */
+    if (*nextchar == '\0')
+      ++optind;
+
+    if (temp == NULL || c == ':')
+      {
+	if (opterr)
+	  {
+	    if (posixly_correct)
+	      /* 1003.2 specifies the format of this message.  */
+	      fprintf (stderr, _("%s: illegal option -- %c\n"),
+		       argv[0], c);
+	    else
+	      fprintf (stderr, _("%s: invalid option -- %c\n"),
+		       argv[0], c);
+	  }
+	optopt = c;
+	return '?';
+      }
+    /* Convenience. Treat POSIX -W foo same as long option --foo */
+    if (temp[0] == 'W' && temp[1] == ';')
+      {
+	char *nameend;
+	const struct option *p;
+	const struct option *pfound = NULL;
+	int exact = 0;
+	int ambig = 0;
+	int indfound = 0;
+	int option_index;
+
+	/* This is an option that requires an argument.  */
+	if (*nextchar != '\0')
+	  {
+	    optarg = nextchar;
+	    /* If we end this ARGV-element by taking the rest as an arg,
+	       we must advance to the next element now.  */
+	    optind++;
+	  }
+	else if (optind == argc)
+	  {
+	    if (opterr)
+	      {
+		/* 1003.2 specifies the format of this message.  */
+		fprintf (stderr, _("%s: option requires an argument -- %c\n"),
+			 argv[0], c);
+	      }
+	    optopt = c;
+	    if (optstring[0] == ':')
+	      c = ':';
+	    else
+	      c = '?';
+	    return c;
+	  }
+	else
+	  /* We already incremented `optind' once;
+	     increment it again when taking next ARGV-elt as argument.  */
+	  optarg = argv[optind++];
+
+	/* optarg is now the argument, see if it's in the
+	   table of longopts.  */
+
+	for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
+	  /* Do nothing.  */ ;
+
+	/* Test all long options for either exact match
+	   or abbreviated matches.  */
+	for (p = longopts, option_index = 0; p->name; p++, option_index++)
+	  if (!strncmp (p->name, nextchar, nameend - nextchar))
+	    {
+	      if ((unsigned int) (nameend - nextchar) == strlen (p->name))
+		{
+		  /* Exact match found.  */
+		  pfound = p;
+		  indfound = option_index;
+		  exact = 1;
+		  break;
+		}
+	      else if (pfound == NULL)
+		{
+		  /* First nonexact match found.  */
+		  pfound = p;
+		  indfound = option_index;
+		}
+	      else
+		/* Second or later nonexact match found.  */
+		ambig = 1;
+	    }
+	if (ambig && !exact)
+	  {
+	    if (opterr)
+	      fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
+		       argv[0], argv[optind]);
+	    nextchar += strlen (nextchar);
+	    optind++;
+	    return '?';
+	  }
+	if (pfound != NULL)
+	  {
+	    option_index = indfound;
+	    if (*nameend)
+	      {
+		/* Don't test has_arg with >, because some C compilers don't
+		   allow it to be used on enums.  */
+		if (pfound->has_arg)
+		  optarg = nameend + 1;
+		else
+		  {
+		    if (opterr)
+		      fprintf (stderr, _("\
+%s: option `-W %s' doesn't allow an argument\n"),
+			       argv[0], pfound->name);
+
+		    nextchar += strlen (nextchar);
+		    return '?';
+		  }
+	      }
+	    else if (pfound->has_arg == 1)
+	      {
+		if (optind < argc)
+		  optarg = argv[optind++];
+		else
+		  {
+		    if (opterr)
+		      fprintf (stderr,
+			       _("%s: option `%s' requires an argument\n"),
+			       argv[0], argv[optind - 1]);
+		    nextchar += strlen (nextchar);
+		    return optstring[0] == ':' ? ':' : '?';
+		  }
+	      }
+	    nextchar += strlen (nextchar);
+	    if (longind != NULL)
+	      *longind = option_index;
+	    if (pfound->flag)
+	      {
+		*(pfound->flag) = pfound->val;
+		return 0;
+	      }
+	    return pfound->val;
+	  }
+	  nextchar = NULL;
+	  return 'W';	/* Let the application handle it.   */
+      }
+    if (temp[1] == ':')
+      {
+	if (temp[2] == ':')
+	  {
+	    /* This is an option that accepts an argument optionally.  */
+	    if (*nextchar != '\0')
+	      {
+		optarg = nextchar;
+		optind++;
+	      }
+	    else
+	      optarg = NULL;
+	    nextchar = NULL;
+	  }
+	else
+	  {
+	    /* This is an option that requires an argument.  */
+	    if (*nextchar != '\0')
+	      {
+		optarg = nextchar;
+		/* If we end this ARGV-element by taking the rest as an arg,
+		   we must advance to the next element now.  */
+		optind++;
+	      }
+	    else if (optind == argc)
+	      {
+		if (opterr)
+		  {
+		    /* 1003.2 specifies the format of this message.  */
+		    fprintf (stderr,
+			   _("%s: option requires an argument -- %c\n"),
+			   argv[0], c);
+		  }
+		optopt = c;
+		if (optstring[0] == ':')
+		  c = ':';
+		else
+		  c = '?';
+	      }
+	    else
+	      /* We already incremented `optind' once;
+		 increment it again when taking next ARGV-elt as argument.  */
+	      optarg = argv[optind++];
+	    nextchar = NULL;
+	  }
+      }
+    return c;
+  }
+}
+
+int
+getopt (argc, argv, optstring)
+     int argc;
+     char *const *argv;
+     const char *optstring;
+{
+  return _getopt_internal (argc, argv, optstring,
+			   (const struct option *) 0,
+			   (int *) 0,
+			   0);
+}
+
+#endif	/* Not ELIDE_CODE.  */
+
+#ifdef TEST
+
+/* Compile with -DTEST to make an executable for use in testing
+   the above definition of `getopt'.  */
+
+int
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  int c;
+  int digit_optind = 0;
+
+  while (1)
+    {
+      int this_option_optind = optind ? optind : 1;
+
+      c = getopt (argc, argv, "abc:d:0123456789");
+      if (c == -1)
+	break;
+
+      switch (c)
+	{
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+	  if (digit_optind != 0 && digit_optind != this_option_optind)
+	    printf ("digits occur in two different argv-elements.\n");
+	  digit_optind = this_option_optind;
+	  printf ("option %c\n", c);
+	  break;
+
+	case 'a':
+	  printf ("option a\n");
+	  break;
+
+	case 'b':
+	  printf ("option b\n");
+	  break;
+
+	case 'c':
+	  printf ("option c with value `%s'\n", optarg);
+	  break;
+
+	case '?':
+	  break;
+
+	default:
+	  printf ("?? getopt returned character code 0%o ??\n", c);
+	}
+    }
+
+  if (optind < argc)
+    {
+      printf ("non-option ARGV-elements: ");
+      while (optind < argc)
+	printf ("%s ", argv[optind++]);
+      printf ("\n");
+    }
+
+  exit (0);
+}
+
+#endif /* TEST */
diff --git a/src/sed/lib/getopt.h b/src/sed/lib/getopt.h
new file mode 100644
index 0000000..7056f3d
--- /dev/null
+++ b/src/sed/lib/getopt.h
@@ -0,0 +1,133 @@
+/* Declarations for getopt.
+   Copyright (C) 1989,90,91,92,93,94,96,97 Free Software Foundation, Inc.
+
+   NOTE: The canonical source of this file is maintained with the GNU C Library.
+   Bugs can be reported to bug-glibc@gnu.org.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifndef _GETOPT_H
+#define _GETOPT_H 1
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/* For communication from `getopt' to the caller.
+   When `getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+extern char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to `getopt'.
+
+   On entry to `getopt', zero means this is the first call; initialize.
+
+   When `getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+extern int optind;
+
+/* Callers store zero here to inhibit the error message `getopt' prints
+   for unrecognized options.  */
+
+extern int opterr;
+
+/* Set to an option character which was unrecognized.  */
+
+extern int optopt;
+
+/* Describe the long-named options requested by the application.
+   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+   of `struct option' terminated by an element containing a name which is
+   zero.
+
+   The field `has_arg' is:
+   no_argument		(or 0) if the option does not take an argument,
+   required_argument	(or 1) if the option requires an argument,
+   optional_argument 	(or 2) if the option takes an optional argument.
+
+   If the field `flag' is not NULL, it points to a variable that is set
+   to the value given in the field `val' when the option is found, but
+   left unchanged if the option is not found.
+
+   To have a long-named option do something other than set an `int' to
+   a compiled-in constant, such as set a value from `optarg', set the
+   option's `flag' field to zero and its `val' field to a nonzero
+   value (the equivalent single-letter option character, if there is
+   one).  For long options that have a zero `flag' field, `getopt'
+   returns the contents of the `val' field.  */
+
+struct option
+{
+#if defined (__STDC__) && __STDC__
+  const char *name;
+#else
+  char *name;
+#endif
+  /* has_arg can't be an enum because some compilers complain about
+     type mismatches in all the code that assumes it is an int.  */
+  int has_arg;
+  int *flag;
+  int val;
+};
+
+/* Names for the values of the `has_arg' field of `struct option'.  */
+
+#define	no_argument		0
+#define required_argument	1
+#define optional_argument	2
+
+#if defined (__STDC__) && __STDC__
+#ifdef __GNU_LIBRARY__
+/* Many other libraries have conflicting prototypes for getopt, with
+   differences in the consts, in stdlib.h.  To avoid compilation
+   errors, only prototype getopt for the GNU C library.  */
+extern int getopt (int argc, char *const *argv, const char *shortopts);
+#else /* not __GNU_LIBRARY__ */
+extern int getopt ();
+#endif /* __GNU_LIBRARY__ */
+extern int getopt_long (int argc, char *const *argv, const char *shortopts,
+		        const struct option *longopts, int *longind);
+extern int getopt_long_only (int argc, char *const *argv,
+			     const char *shortopts,
+		             const struct option *longopts, int *longind);
+
+/* Internal only.  Users should not call this directly.  */
+extern int _getopt_internal (int argc, char *const *argv,
+			     const char *shortopts,
+		             const struct option *longopts, int *longind,
+			     int long_only);
+#else /* not __STDC__ */
+extern int getopt ();
+extern int getopt_long ();
+extern int getopt_long_only ();
+
+extern int _getopt_internal ();
+#endif /* __STDC__ */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* getopt.h */
diff --git a/src/sed/lib/getopt1.c b/src/sed/lib/getopt1.c
new file mode 100644
index 0000000..d79d9f2
--- /dev/null
+++ b/src/sed/lib/getopt1.c
@@ -0,0 +1,190 @@
+/* getopt_long and getopt_long_only entry points for GNU getopt.
+   Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98
+     Free Software Foundation, Inc.
+
+   NOTE: The canonical source of this file is maintained with the GNU C Library.
+   Bugs can be reported to bug-glibc@gnu.org.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "getopt.h"
+
+#if !defined __STDC__ || !__STDC__
+/* This is a separate conditional since some stdc systems
+   reject `defined (const)'.  */
+#ifndef const
+#define const
+#endif
+#endif
+
+#include <stdio.h>
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#define GETOPT_INTERFACE_VERSION 2
+#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
+#include <gnu-versions.h>
+#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
+#define ELIDE_CODE
+#endif
+#endif
+
+#ifndef ELIDE_CODE
+
+
+/* This needs to come after some library #include
+   to get __GNU_LIBRARY__ defined.  */
+#ifdef __GNU_LIBRARY__
+#include <stdlib.h>
+#endif
+
+#ifndef	NULL
+#define NULL 0
+#endif
+
+int
+getopt_long (argc, argv, options, long_options, opt_index)
+     int argc;
+     char *const *argv;
+     const char *options;
+     const struct option *long_options;
+     int *opt_index;
+{
+  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
+}
+
+/* Like getopt_long, but '-' as well as '--' can indicate a long option.
+   If an option that starts with '-' (not '--') doesn't match a long option,
+   but does match a short option, it is parsed as a short option
+   instead.  */
+
+int
+getopt_long_only (argc, argv, options, long_options, opt_index)
+     int argc;
+     char *const *argv;
+     const char *options;
+     const struct option *long_options;
+     int *opt_index;
+{
+  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
+}
+
+
+#endif	/* Not ELIDE_CODE.  */
+
+#ifdef TEST
+
+#include <stdio.h>
+
+int
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  int c;
+  int digit_optind = 0;
+
+  while (1)
+    {
+      int this_option_optind = optind ? optind : 1;
+      int option_index = 0;
+      static struct option long_options[] =
+      {
+	{"add", 1, 0, 0},
+	{"append", 0, 0, 0},
+	{"delete", 1, 0, 0},
+	{"verbose", 0, 0, 0},
+	{"create", 0, 0, 0},
+	{"file", 1, 0, 0},
+	{0, 0, 0, 0}
+      };
+
+      c = getopt_long (argc, argv, "abc:d:0123456789",
+		       long_options, &option_index);
+      if (c == -1)
+	break;
+
+      switch (c)
+	{
+	case 0:
+	  printf ("option %s", long_options[option_index].name);
+	  if (optarg)
+	    printf (" with arg %s", optarg);
+	  printf ("\n");
+	  break;
+
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+	  if (digit_optind != 0 && digit_optind != this_option_optind)
+	    printf ("digits occur in two different argv-elements.\n");
+	  digit_optind = this_option_optind;
+	  printf ("option %c\n", c);
+	  break;
+
+	case 'a':
+	  printf ("option a\n");
+	  break;
+
+	case 'b':
+	  printf ("option b\n");
+	  break;
+
+	case 'c':
+	  printf ("option c with value `%s'\n", optarg);
+	  break;
+
+	case 'd':
+	  printf ("option d with value `%s'\n", optarg);
+	  break;
+
+	case '?':
+	  break;
+
+	default:
+	  printf ("?? getopt returned character code 0%o ??\n", c);
+	}
+    }
+
+  if (optind < argc)
+    {
+      printf ("non-option ARGV-elements: ");
+      while (optind < argc)
+	printf ("%s ", argv[optind++]);
+      printf ("\n");
+    }
+
+  exit (0);
+}
+
+#endif /* TEST */
diff --git a/src/sed/lib/memchr.c b/src/sed/lib/memchr.c
new file mode 100644
index 0000000..0e3e630
--- /dev/null
+++ b/src/sed/lib/memchr.c
@@ -0,0 +1,200 @@
+/* Copyright (C) 1991, 1993, 1996, 1997 Free Software Foundation, Inc.
+   Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
+   with help from Dan Sahlin (dan@sics.se) and
+   commentary by Jim Blandy (jimb@ai.mit.edu);
+   adaptation to memchr suggested by Dick Karpinski (dick@cca.ucsf.edu),
+   and implemented by Roland McGrath (roland@ai.mit.edu).
+
+   NOTE: The canonical source of this file is maintained with the GNU C Library.
+   Bugs can be reported to bug-glibc@gnu.org.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#undef __ptr_t
+#if defined (__cplusplus) || (defined (__STDC__) && __STDC__)
+# define __ptr_t void *
+#else /* Not C++ or ANSI C.  */
+# define __ptr_t char *
+#endif /* C++ or ANSI C.  */
+
+#if defined (_LIBC)
+# include <string.h>
+#endif
+
+#if defined (HAVE_LIMITS_H) || defined (_LIBC)
+# include <limits.h>
+#endif
+
+#define LONG_MAX_32_BITS 2147483647
+
+#ifndef LONG_MAX
+#define LONG_MAX LONG_MAX_32_BITS
+#endif
+
+#include <sys/types.h>
+
+#undef memchr
+
+
+/* Search no more than N bytes of S for C.  */
+__ptr_t
+memchr (s, c, n)
+     const __ptr_t s;
+     int c;
+     size_t n;
+{
+  const unsigned char *char_ptr;
+  const unsigned long int *longword_ptr;
+  unsigned long int longword, magic_bits, charmask;
+
+  c = (unsigned char) c;
+
+  /* Handle the first few characters by reading one character at a time.
+     Do this until CHAR_PTR is aligned on a longword boundary.  */
+  for (char_ptr = (const unsigned char *) s;
+       n > 0 && ((unsigned long int) char_ptr
+		 & (sizeof (longword) - 1)) != 0;
+       --n, ++char_ptr)
+    if (*char_ptr == c)
+      return (__ptr_t) char_ptr;
+
+  /* All these elucidatory comments refer to 4-byte longwords,
+     but the theory applies equally well to 8-byte longwords.  */
+
+  longword_ptr = (unsigned long int *) char_ptr;
+
+  /* Bits 31, 24, 16, and 8 of this number are zero.  Call these bits
+     the "holes."  Note that there is a hole just to the left of
+     each byte, with an extra at the end:
+
+     bits:  01111110 11111110 11111110 11111111
+     bytes: AAAAAAAA BBBBBBBB CCCCCCCC DDDDDDDD
+
+     The 1-bits make sure that carries propagate to the next 0-bit.
+     The 0-bits provide holes for carries to fall into.  */
+
+  if (sizeof (longword) != 4 && sizeof (longword) != 8)
+    abort ();
+
+#if LONG_MAX <= LONG_MAX_32_BITS
+  magic_bits = 0x7efefeff;
+#else
+  magic_bits = ((unsigned long int) 0x7efefefe << 32) | 0xfefefeff;
+#endif
+
+  /* Set up a longword, each of whose bytes is C.  */
+  charmask = c | (c << 8);
+  charmask |= charmask << 16;
+#if LONG_MAX > LONG_MAX_32_BITS
+  charmask |= charmask << 32;
+#endif
+
+  /* Instead of the traditional loop which tests each character,
+     we will test a longword at a time.  The tricky part is testing
+     if *any of the four* bytes in the longword in question are zero.  */
+  while (n >= sizeof (longword))
+    {
+      /* We tentatively exit the loop if adding MAGIC_BITS to
+	 LONGWORD fails to change any of the hole bits of LONGWORD.
+
+	 1) Is this safe?  Will it catch all the zero bytes?
+	 Suppose there is a byte with all zeros.  Any carry bits
+	 propagating from its left will fall into the hole at its
+	 least significant bit and stop.  Since there will be no
+	 carry from its most significant bit, the LSB of the
+	 byte to the left will be unchanged, and the zero will be
+	 detected.
+
+	 2) Is this worthwhile?  Will it ignore everything except
+	 zero bytes?  Suppose every byte of LONGWORD has a bit set
+	 somewhere.  There will be a carry into bit 8.  If bit 8
+	 is set, this will carry into bit 16.  If bit 8 is clear,
+	 one of bits 9-15 must be set, so there will be a carry
+	 into bit 16.  Similarly, there will be a carry into bit
+	 24.  If one of bits 24-30 is set, there will be a carry
+	 into bit 31, so all of the hole bits will be changed.
+
+	 The one misfire occurs when bits 24-30 are clear and bit
+	 31 is set; in this case, the hole at bit 31 is not
+	 changed.  If we had access to the processor carry flag,
+	 we could close this loophole by putting the fourth hole
+	 at bit 32!
+
+	 So it ignores everything except 128's, when they're aligned
+	 properly.
+
+	 3) But wait!  Aren't we looking for C, not zero?
+	 Good point.  So what we do is XOR LONGWORD with a longword,
+	 each of whose bytes is C.  This turns each byte that is C
+	 into a zero.  */
+
+      longword = *longword_ptr++ ^ charmask;
+
+      /* Add MAGIC_BITS to LONGWORD.  */
+      if ((((longword + magic_bits)
+
+	    /* Set those bits that were unchanged by the addition.  */
+	    ^ ~longword)
+
+	   /* Look at only the hole bits.  If any of the hole bits
+	      are unchanged, most likely one of the bytes was a
+	      zero.  */
+	   & ~magic_bits) != 0)
+	{
+	  /* Which of the bytes was C?  If none of them were, it was
+	     a misfire; continue the search.  */
+
+	  const unsigned char *cp = (const unsigned char *) (longword_ptr - 1);
+
+	  if (cp[0] == c)
+	    return (__ptr_t) cp;
+	  if (cp[1] == c)
+	    return (__ptr_t) &cp[1];
+	  if (cp[2] == c)
+	    return (__ptr_t) &cp[2];
+	  if (cp[3] == c)
+	    return (__ptr_t) &cp[3];
+#if LONG_MAX > 2147483647
+	  if (cp[4] == c)
+	    return (__ptr_t) &cp[4];
+	  if (cp[5] == c)
+	    return (__ptr_t) &cp[5];
+	  if (cp[6] == c)
+	    return (__ptr_t) &cp[6];
+	  if (cp[7] == c)
+	    return (__ptr_t) &cp[7];
+#endif
+	}
+
+      n -= sizeof (longword);
+    }
+
+  char_ptr = (const unsigned char *) longword_ptr;
+
+  while (n-- > 0)
+    {
+      if (*char_ptr == c)
+	return (__ptr_t) char_ptr;
+      else
+	++char_ptr;
+    }
+
+  return 0;
+}
diff --git a/src/sed/lib/memcmp.c b/src/sed/lib/memcmp.c
new file mode 100644
index 0000000..76cf52e
--- /dev/null
+++ b/src/sed/lib/memcmp.c
@@ -0,0 +1,396 @@
+/* Copyright (C) 1991, 1993, 1995, 1997, 1998 Free Software Foundation, Inc.
+   Contributed by Torbjorn Granlund (tege@sics.se).
+
+   NOTE: The canonical source of this file is maintained with the GNU C Library.
+   Bugs can be reported to bug-glibc@gnu.org.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#undef	__ptr_t
+#if defined __cplusplus || (defined __STDC__ && __STDC__)
+# define __ptr_t	void *
+#else /* Not C++ or ANSI C.  */
+# undef	const
+# define const
+# define __ptr_t	char *
+#endif /* C++ or ANSI C.  */
+
+#ifndef __P
+# if defined __GNUC__ || (defined __STDC__ && __STDC__)
+#  define __P(args) args
+# else
+#  define __P(args) ()
+# endif  /* GCC.  */
+#endif  /* Not __P.  */
+
+#if defined HAVE_STRING_H || defined _LIBC
+# include <string.h>
+#endif
+
+#undef memcmp
+
+#ifdef _LIBC
+
+# include <memcopy.h>
+# include <endian.h>
+
+# if __BYTE_ORDER == __BIG_ENDIAN
+#  define WORDS_BIGENDIAN
+# endif
+
+#else	/* Not in the GNU C library.  */
+
+# include <sys/types.h>
+
+/* Type to use for aligned memory operations.
+   This should normally be the biggest type supported by a single load
+   and store.  Must be an unsigned type.  */
+# define op_t	unsigned long int
+# define OPSIZ	(sizeof(op_t))
+
+/* Threshold value for when to enter the unrolled loops.  */
+# define OP_T_THRES	16
+
+/* Type to use for unaligned operations.  */
+typedef unsigned char byte;
+
+# ifndef WORDS_BIGENDIAN
+#  define MERGE(w0, sh_1, w1, sh_2) (((w0) >> (sh_1)) | ((w1) << (sh_2)))
+# else
+#  define MERGE(w0, sh_1, w1, sh_2) (((w0) << (sh_1)) | ((w1) >> (sh_2)))
+# endif
+
+#endif	/* In the GNU C library.  */
+
+#ifdef WORDS_BIGENDIAN
+# define CMP_LT_OR_GT(a, b) ((a) > (b) ? 1 : -1)
+#else
+# define CMP_LT_OR_GT(a, b) memcmp_bytes ((a), (b))
+#endif
+
+/* BE VERY CAREFUL IF YOU CHANGE THIS CODE!  */
+
+/* The strategy of this memcmp is:
+
+   1. Compare bytes until one of the block pointers is aligned.
+
+   2. Compare using memcmp_common_alignment or
+      memcmp_not_common_alignment, regarding the alignment of the other
+      block after the initial byte operations.  The maximum number of
+      full words (of type op_t) are compared in this way.
+
+   3. Compare the few remaining bytes.  */
+
+#ifndef WORDS_BIGENDIAN
+/* memcmp_bytes -- Compare A and B bytewise in the byte order of the machine.
+   A and B are known to be different.
+   This is needed only on little-endian machines.  */
+
+static int memcmp_bytes __P((op_t, op_t));
+
+# ifdef  __GNUC__
+__inline
+# endif
+static int
+memcmp_bytes (a, b)
+     op_t a, b;
+{
+  long int srcp1 = (long int) &a;
+  long int srcp2 = (long int) &b;
+  op_t a0, b0;
+
+  do
+    {
+      a0 = ((byte *) srcp1)[0];
+      b0 = ((byte *) srcp2)[0];
+      srcp1 += 1;
+      srcp2 += 1;
+    }
+  while (a0 == b0);
+  return a0 - b0;
+}
+#endif
+
+static int memcmp_common_alignment __P((long, long, size_t));
+
+/* memcmp_common_alignment -- Compare blocks at SRCP1 and SRCP2 with LEN `op_t'
+   objects (not LEN bytes!).  Both SRCP1 and SRCP2 should be aligned for
+   memory operations on `op_t's.  */
+#ifdef	__GNUC__
+__inline
+#endif
+static int
+memcmp_common_alignment (srcp1, srcp2, len)
+     long int srcp1;
+     long int srcp2;
+     size_t len;
+{
+  op_t a0, a1;
+  op_t b0, b1;
+
+  switch (len % 4)
+    {
+    default: /* Avoid warning about uninitialized local variables.  */
+    case 2:
+      a0 = ((op_t *) srcp1)[0];
+      b0 = ((op_t *) srcp2)[0];
+      srcp1 -= 2 * OPSIZ;
+      srcp2 -= 2 * OPSIZ;
+      len += 2;
+      goto do1;
+    case 3:
+      a1 = ((op_t *) srcp1)[0];
+      b1 = ((op_t *) srcp2)[0];
+      srcp1 -= OPSIZ;
+      srcp2 -= OPSIZ;
+      len += 1;
+      goto do2;
+    case 0:
+      if (OP_T_THRES <= 3 * OPSIZ && len == 0)
+	return 0;
+      a0 = ((op_t *) srcp1)[0];
+      b0 = ((op_t *) srcp2)[0];
+      goto do3;
+    case 1:
+      a1 = ((op_t *) srcp1)[0];
+      b1 = ((op_t *) srcp2)[0];
+      srcp1 += OPSIZ;
+      srcp2 += OPSIZ;
+      len -= 1;
+      if (OP_T_THRES <= 3 * OPSIZ && len == 0)
+	goto do0;
+      /* Fall through.  */
+    }
+
+  do
+    {
+      a0 = ((op_t *) srcp1)[0];
+      b0 = ((op_t *) srcp2)[0];
+      if (a1 != b1)
+	return CMP_LT_OR_GT (a1, b1);
+
+    do3:
+      a1 = ((op_t *) srcp1)[1];
+      b1 = ((op_t *) srcp2)[1];
+      if (a0 != b0)
+	return CMP_LT_OR_GT (a0, b0);
+
+    do2:
+      a0 = ((op_t *) srcp1)[2];
+      b0 = ((op_t *) srcp2)[2];
+      if (a1 != b1)
+	return CMP_LT_OR_GT (a1, b1);
+
+    do1:
+      a1 = ((op_t *) srcp1)[3];
+      b1 = ((op_t *) srcp2)[3];
+      if (a0 != b0)
+	return CMP_LT_OR_GT (a0, b0);
+
+      srcp1 += 4 * OPSIZ;
+      srcp2 += 4 * OPSIZ;
+      len -= 4;
+    }
+  while (len != 0);
+
+  /* This is the right position for do0.  Please don't move
+     it into the loop.  */
+ do0:
+  if (a1 != b1)
+    return CMP_LT_OR_GT (a1, b1);
+  return 0;
+}
+
+static int memcmp_not_common_alignment __P((long, long, size_t));
+
+/* memcmp_not_common_alignment -- Compare blocks at SRCP1 and SRCP2 with LEN
+   `op_t' objects (not LEN bytes!).  SRCP2 should be aligned for memory
+   operations on `op_t', but SRCP1 *should be unaligned*.  */
+#ifdef	__GNUC__
+__inline
+#endif
+static int
+memcmp_not_common_alignment (srcp1, srcp2, len)
+     long int srcp1;
+     long int srcp2;
+     size_t len;
+{
+  op_t a0, a1, a2, a3;
+  op_t b0, b1, b2, b3;
+  op_t x;
+  int shl, shr;
+
+  /* Calculate how to shift a word read at the memory operation
+     aligned srcp1 to make it aligned for comparison.  */
+
+  shl = 8 * (srcp1 % OPSIZ);
+  shr = 8 * OPSIZ - shl;
+
+  /* Make SRCP1 aligned by rounding it down to the beginning of the `op_t'
+     it points in the middle of.  */
+  srcp1 &= -OPSIZ;
+
+  switch (len % 4)
+    {
+    default: /* Avoid warning about uninitialized local variables.  */
+    case 2:
+      a1 = ((op_t *) srcp1)[0];
+      a2 = ((op_t *) srcp1)[1];
+      b2 = ((op_t *) srcp2)[0];
+      srcp1 -= 1 * OPSIZ;
+      srcp2 -= 2 * OPSIZ;
+      len += 2;
+      goto do1;
+    case 3:
+      a0 = ((op_t *) srcp1)[0];
+      a1 = ((op_t *) srcp1)[1];
+      b1 = ((op_t *) srcp2)[0];
+      srcp2 -= 1 * OPSIZ;
+      len += 1;
+      goto do2;
+    case 0:
+      if (OP_T_THRES <= 3 * OPSIZ && len == 0)
+	return 0;
+      a3 = ((op_t *) srcp1)[0];
+      a0 = ((op_t *) srcp1)[1];
+      b0 = ((op_t *) srcp2)[0];
+      srcp1 += 1 * OPSIZ;
+      goto do3;
+    case 1:
+      a2 = ((op_t *) srcp1)[0];
+      a3 = ((op_t *) srcp1)[1];
+      b3 = ((op_t *) srcp2)[0];
+      srcp1 += 2 * OPSIZ;
+      srcp2 += 1 * OPSIZ;
+      len -= 1;
+      if (OP_T_THRES <= 3 * OPSIZ && len == 0)
+	goto do0;
+      /* Fall through.  */
+    }
+
+  do
+    {
+      a0 = ((op_t *) srcp1)[0];
+      b0 = ((op_t *) srcp2)[0];
+      x = MERGE(a2, shl, a3, shr);
+      if (x != b3)
+	return CMP_LT_OR_GT (x, b3);
+
+    do3:
+      a1 = ((op_t *) srcp1)[1];
+      b1 = ((op_t *) srcp2)[1];
+      x = MERGE(a3, shl, a0, shr);
+      if (x != b0)
+	return CMP_LT_OR_GT (x, b0);
+
+    do2:
+      a2 = ((op_t *) srcp1)[2];
+      b2 = ((op_t *) srcp2)[2];
+      x = MERGE(a0, shl, a1, shr);
+      if (x != b1)
+	return CMP_LT_OR_GT (x, b1);
+
+    do1:
+      a3 = ((op_t *) srcp1)[3];
+      b3 = ((op_t *) srcp2)[3];
+      x = MERGE(a1, shl, a2, shr);
+      if (x != b2)
+	return CMP_LT_OR_GT (x, b2);
+
+      srcp1 += 4 * OPSIZ;
+      srcp2 += 4 * OPSIZ;
+      len -= 4;
+    }
+  while (len != 0);
+
+  /* This is the right position for do0.  Please don't move
+     it into the loop.  */
+ do0:
+  x = MERGE(a2, shl, a3, shr);
+  if (x != b3)
+    return CMP_LT_OR_GT (x, b3);
+  return 0;
+}
+
+int
+memcmp (s1, s2, len)
+     const __ptr_t s1;
+     const __ptr_t s2;
+     size_t len;
+{
+  op_t a0;
+  op_t b0;
+  long int srcp1 = (long int) s1;
+  long int srcp2 = (long int) s2;
+  op_t res;
+
+  if (len >= OP_T_THRES)
+    {
+      /* There are at least some bytes to compare.  No need to test
+	 for LEN == 0 in this alignment loop.  */
+      while (srcp2 % OPSIZ != 0)
+	{
+	  a0 = ((byte *) srcp1)[0];
+	  b0 = ((byte *) srcp2)[0];
+	  srcp1 += 1;
+	  srcp2 += 1;
+	  res = a0 - b0;
+	  if (res != 0)
+	    return res;
+	  len -= 1;
+	}
+
+      /* SRCP2 is now aligned for memory operations on `op_t'.
+	 SRCP1 alignment determines if we can do a simple,
+	 aligned compare or need to shuffle bits.  */
+
+      if (srcp1 % OPSIZ == 0)
+	res = memcmp_common_alignment (srcp1, srcp2, len / OPSIZ);
+      else
+	res = memcmp_not_common_alignment (srcp1, srcp2, len / OPSIZ);
+      if (res != 0)
+	return res;
+
+      /* Number of bytes remaining in the interval [0..OPSIZ-1].  */
+      srcp1 += len & -OPSIZ;
+      srcp2 += len & -OPSIZ;
+      len %= OPSIZ;
+    }
+
+  /* There are just a few bytes to compare.  Use byte memory operations.  */
+  while (len != 0)
+    {
+      a0 = ((byte *) srcp1)[0];
+      b0 = ((byte *) srcp2)[0];
+      srcp1 += 1;
+      srcp2 += 1;
+      res = a0 - b0;
+      if (res != 0)
+	return res;
+      len -= 1;
+    }
+
+  return 0;
+}
+
+#ifdef weak_alias
+# undef bcmp
+weak_alias (memcmp, bcmp)
+#endif
diff --git a/src/sed/lib/memmove.c b/src/sed/lib/memmove.c
new file mode 100644
index 0000000..a0d730e
--- /dev/null
+++ b/src/sed/lib/memmove.c
@@ -0,0 +1,76 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* Last ditch effort to support memmove: if user doesn't have
+   memmove or bcopy, we offer this sluggish implementation. */
+
+#include "config.h"
+#ifndef HAVE_MEMMOVE
+
+#include <sys/types.h>
+#ifdef HAVE_MEMORY_H
+# include <memory.h>
+#endif
+
+#ifndef VOID
+# define VOID void
+#endif
+
+VOID *
+memmove(dest, src, len)
+  VOID *dest;
+  const VOID *src;
+  size_t len;
+{
+#ifdef HAVE_BCOPY
+  bcopy(src, dest, len);
+
+#else /*!HAVE_BCOPY*/
+  char *dp = dest;
+  const char *sp = src;
+
+# ifdef HAVE_MEMCPY
+  /* A special-case for non-overlapping regions, on the assumption
+     that there is some hope that the sytem's memcpy() implementaion
+     is better than our dumb fall-back one. */
+  if ((dp < sp && dp+len < sp) || (sp < dp && sp+len < dp))
+    return memcpy(dest, src, len);
+# endif
+
+  /* I tried real hard to avoid getting to this point.
+     You *really* ought to upgrade your system's libraries;
+	 the performance of this implementation sucks. */
+  if (dp < sp)
+    {
+      while (len-- > 0)
+	*dp++ = *sp++;
+    }
+  else
+    {
+      if (dp == sp)
+	return dest;
+      dp += len;
+      sp += len;
+      while (len-- > 0)
+	*--dp = *--sp;
+    }
+#endif /*!HAVE_BCOPY*/
+
+  return dest;
+}
+
+#endif	/*!HAVE_MEMMOVE*/
diff --git a/src/sed/lib/mkstemp.c b/src/sed/lib/mkstemp.c
new file mode 100644
index 0000000..5b00205
--- /dev/null
+++ b/src/sed/lib/mkstemp.c
@@ -0,0 +1,70 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#else
+# include <string.h>
+#endif /* HAVE_STRINGS_H */
+
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif /* HAVE_STDLIB_H */
+
+#ifdef HAVE_SYS_FILE_H
+# include <sys/file.h>
+#endif /* HAVE_SYS_FILE_H */
+
+#ifdef HAVE_IO_H
+# include <io.h>
+#endif /* HAVE_IO_H */
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif /* HAVE_FCNTL_H */
+
+#include <limits.h>
+#include <errno.h>
+
+/* Generate a unique temporary file name from template.  The last six characters of
+   template must be XXXXXX and these are replaced with a string that makes the
+   filename unique. */
+
+int
+mkstemp (template)
+     char *template;
+{
+  int i, j, n, fd;
+  char *data = template + strlen(template) - 6;
+
+  if (data < template) {
+    errno = EINVAL;
+    return -1;
+  }
+
+  for (n = 0; n <= 5; n++)
+    if (data[n] != 'X') {
+      errno = EINVAL;
+      return -1;
+    }
+
+  for (i = 0; i < INT_MAX; i++) {
+    j = i ^ 827714841;             /* Base 36 DOSSUX :-) */
+    for (n = 5; n >= 0; n--) {
+      data[n] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" [j % 36];
+      j /= 36;
+    }
+
+    fd = open (template, O_CREAT|O_EXCL|O_RDWR, 0600);
+    if (fd != -1)
+      return fd;
+  }
+    
+  errno = EEXIST;
+  return -1;
+}
diff --git a/src/sed/lib/obstack.c b/src/sed/lib/obstack.c
new file mode 100644
index 0000000..14e472b
--- /dev/null
+++ b/src/sed/lib/obstack.c
@@ -0,0 +1,573 @@
+/* obstack.c - subroutines used implicitly by object stack macros -*- C -*-
+   Copyright (C) 1988,89,90,91,92,93,94,96,97 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.  Its master source is NOT part of
+   the C library, however.  The master source lives in /gd/gnu/lib.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "obstack.h"
+
+/* NOTE BEFORE MODIFYING THIS FILE: This version number must be
+   incremented whenever callers compiled using an old obstack.h can no
+   longer properly call the functions in this obstack.c.  */
+#define OBSTACK_INTERFACE_VERSION 1
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself, and the installed library
+   supports the same library interface we do.  This code is part of the GNU
+   C Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object
+   files, it is simpler to just do this in the source for each such file.  */
+
+#include <stdio.h>		/* Random thing to get __GNU_LIBRARY__.  */
+#if !defined (_LIBC) && defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
+#include <gnu-versions.h>
+#if _GNU_OBSTACK_INTERFACE_VERSION == OBSTACK_INTERFACE_VERSION
+#define ELIDE_CODE
+#endif
+#endif
+
+
+#ifndef ELIDE_CODE
+
+
+#if defined (__STDC__) && __STDC__
+#define POINTER void *
+#else
+#define POINTER char *
+#endif
+
+/* Determine default alignment.  */
+struct fooalign {char x; double d;};
+#define DEFAULT_ALIGNMENT  \
+  ((PTR_INT_TYPE) ((char *) &((struct fooalign *) 0)->d - (char *) 0))
+/* If malloc were really smart, it would round addresses to DEFAULT_ALIGNMENT.
+   But in fact it might be less smart and round addresses to as much as
+   DEFAULT_ROUNDING.  So we prepare for it to do that.  */
+union fooround {long x; double d;};
+#define DEFAULT_ROUNDING (sizeof (union fooround))
+
+#ifdef original_glibc_code
+/**//* When we copy a long block of data, this is the unit to do it with. */
+/**//* On some machines, copying successive ints does not work; */
+/**//* in such a case, redefine COPYING_UNIT to `long' (if that works) */
+/**//* or `char' as a last resort.  */
+/**/#ifndef COPYING_UNIT
+/**/#define COPYING_UNIT int
+/**/#endif
+#endif
+
+/* The functions allocating more room by calling `obstack_chunk_alloc'
+   jump to the handler pointed to by `obstack_alloc_failed_handler'.
+   This variable by default points to the internal function
+   `print_and_abort'.  */
+#if defined (__STDC__) && __STDC__
+static void print_and_abort (void);
+void (*obstack_alloc_failed_handler) (void) = print_and_abort;
+#else
+static void print_and_abort ();
+void (*obstack_alloc_failed_handler) () = print_and_abort;
+#endif
+
+/* Exit value used when `print_and_abort' is used.  */
+#if defined __GNU_LIBRARY__ || defined HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE 1
+#endif
+int obstack_exit_failure = EXIT_FAILURE;
+
+/* The non-GNU-C macros copy the obstack into this global variable
+   to avoid multiple evaluation.  */
+
+struct obstack *_obstack;
+
+/* Define a macro that either calls functions with the traditional malloc/free
+   calling interface, or calls functions with the mmalloc/mfree interface
+   (that adds an extra first argument), based on the state of use_extra_arg.
+   For free, do not use ?:, since some compilers, like the MIPS compilers,
+   do not allow (expr) ? void : void.  */
+
+#if defined (__STDC__) && __STDC__
+#define CALL_CHUNKFUN(h, size) \
+  (((h) -> use_extra_arg) \
+   ? (*(h)->chunkfun) ((h)->extra_arg, (size)) \
+   : (*(struct _obstack_chunk *(*) (long)) (h)->chunkfun) ((size)))
+
+#define CALL_FREEFUN(h, old_chunk) \
+  do { \
+    if ((h) -> use_extra_arg) \
+      (*(h)->freefun) ((h)->extra_arg, (old_chunk)); \
+    else \
+      (*(void (*) (void *)) (h)->freefun) ((old_chunk)); \
+  } while (0)
+#else
+#define CALL_CHUNKFUN(h, size) \
+  (((h) -> use_extra_arg) \
+   ? (*(h)->chunkfun) ((h)->extra_arg, (size)) \
+   : (*(struct _obstack_chunk *(*) ()) (h)->chunkfun) ((size)))
+
+#define CALL_FREEFUN(h, old_chunk) \
+  do { \
+    if ((h) -> use_extra_arg) \
+      (*(h)->freefun) ((h)->extra_arg, (old_chunk)); \
+    else \
+      (*(void (*) ()) (h)->freefun) ((old_chunk)); \
+  } while (0)
+#endif
+
+
+/* Initialize an obstack H for use.  Specify chunk size SIZE (0 means default).
+   Objects start on multiples of ALIGNMENT (0 means use default).
+   CHUNKFUN is the function to use to allocate chunks,
+   and FREEFUN the function to free them.
+
+   Return nonzero if successful, zero if out of memory.
+   To recover from an out of memory error,
+   free up some memory, then call this again.  */
+
+int
+_obstack_begin (h, size, alignment, chunkfun, freefun)
+     struct obstack *h;
+     int size;
+     int alignment;
+#if defined (__STDC__) && __STDC__
+     POINTER (*chunkfun) (long);
+     void (*freefun) (void *);
+#else
+     POINTER (*chunkfun) ();
+     void (*freefun) ();
+#endif
+{
+  register struct _obstack_chunk *chunk; /* points to new chunk */
+
+  if (alignment == 0)
+    alignment = DEFAULT_ALIGNMENT;
+  if (size == 0)
+    /* Default size is what GNU malloc can fit in a 4096-byte block.  */
+    {
+      /* 12 is sizeof (mhead) and 4 is EXTRA from GNU malloc.
+	 Use the values for range checking, because if range checking is off,
+	 the extra bytes won't be missed terribly, but if range checking is on
+	 and we used a larger request, a whole extra 4096 bytes would be
+	 allocated.
+
+	 These number are irrelevant to the new GNU malloc.  I suspect it is
+	 less sensitive to the size of the request.  */
+      int extra = ((((12 + DEFAULT_ROUNDING - 1) & ~(DEFAULT_ROUNDING - 1))
+		    + 4 + DEFAULT_ROUNDING - 1)
+		   & ~(DEFAULT_ROUNDING - 1));
+      size = 4096 - extra;
+    }
+
+#if defined (__STDC__) && __STDC__
+  h->chunkfun = (struct _obstack_chunk * (*)(void *, long)) chunkfun;
+  h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun;
+#else
+  h->chunkfun = (struct _obstack_chunk * (*)()) chunkfun;
+  h->freefun = freefun;
+#endif
+  h->chunk_size = size;
+  h->alignment_mask = alignment - 1;
+  h->use_extra_arg = 0;
+
+  chunk = h->chunk = CALL_CHUNKFUN (h, h -> chunk_size);
+  if (!chunk)
+    (*obstack_alloc_failed_handler) ();
+  h->next_free = h->object_base = chunk->contents;
+  h->chunk_limit = chunk->limit
+    = (char *) chunk + h->chunk_size;
+  chunk->prev = 0;
+  /* The initial chunk now contains no empty object.  */
+  h->maybe_empty_object = 0;
+  h->alloc_failed = 0;
+  return 1;
+}
+
+int
+_obstack_begin_1 (h, size, alignment, chunkfun, freefun, arg)
+     struct obstack *h;
+     int size;
+     int alignment;
+#if defined (__STDC__) && __STDC__
+     POINTER (*chunkfun) (POINTER, long);
+     void (*freefun) (POINTER, POINTER);
+#else
+     POINTER (*chunkfun) ();
+     void (*freefun) ();
+#endif
+     POINTER arg;
+{
+  register struct _obstack_chunk *chunk; /* points to new chunk */
+
+  if (alignment == 0)
+    alignment = DEFAULT_ALIGNMENT;
+  if (size == 0)
+    /* Default size is what GNU malloc can fit in a 4096-byte block.  */
+    {
+      /* 12 is sizeof (mhead) and 4 is EXTRA from GNU malloc.
+	 Use the values for range checking, because if range checking is off,
+	 the extra bytes won't be missed terribly, but if range checking is on
+	 and we used a larger request, a whole extra 4096 bytes would be
+	 allocated.
+
+	 These number are irrelevant to the new GNU malloc.  I suspect it is
+	 less sensitive to the size of the request.  */
+      int extra = ((((12 + DEFAULT_ROUNDING - 1) & ~(DEFAULT_ROUNDING - 1))
+		    + 4 + DEFAULT_ROUNDING - 1)
+		   & ~(DEFAULT_ROUNDING - 1));
+      size = 4096 - extra;
+    }
+
+#if defined(__STDC__) && __STDC__
+  h->chunkfun = (struct _obstack_chunk * (*)(void *,long)) chunkfun;
+  h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun;
+#else
+  h->chunkfun = (struct _obstack_chunk * (*)()) chunkfun;
+  h->freefun = freefun;
+#endif
+  h->chunk_size = size;
+  h->alignment_mask = alignment - 1;
+  h->extra_arg = arg;
+  h->use_extra_arg = 1;
+
+  chunk = h->chunk = CALL_CHUNKFUN (h, h -> chunk_size);
+  if (!chunk)
+    (*obstack_alloc_failed_handler) ();
+  h->next_free = h->object_base = chunk->contents;
+  h->chunk_limit = chunk->limit
+    = (char *) chunk + h->chunk_size;
+  chunk->prev = 0;
+  /* The initial chunk now contains no empty object.  */
+  h->maybe_empty_object = 0;
+  h->alloc_failed = 0;
+  return 1;
+}
+
+/* Allocate a new current chunk for the obstack *H
+   on the assumption that LENGTH bytes need to be added
+   to the current object, or a new object of length LENGTH allocated.
+   Copies any partial object from the end of the old chunk
+   to the beginning of the new one.  */
+
+void
+_obstack_newchunk (h, length)
+     struct obstack *h;
+     int length;
+{
+  register struct _obstack_chunk *old_chunk = h->chunk;
+  register struct _obstack_chunk *new_chunk;
+  register long	new_size;
+  register int obj_size = h->next_free - h->object_base;
+
+  /* Compute size for new chunk.  */
+  new_size = (obj_size + length) + (obj_size >> 3) + 100;
+  if (new_size < h->chunk_size)
+    new_size = h->chunk_size;
+
+  /* Allocate and initialize the new chunk.  */
+  new_chunk = CALL_CHUNKFUN (h, new_size);
+  if (!new_chunk)
+    (*obstack_alloc_failed_handler) ();
+  h->chunk = new_chunk;
+  new_chunk->prev = old_chunk;
+  new_chunk->limit = h->chunk_limit = (char *) new_chunk + new_size;
+
+  _obstack_memcpy(new_chunk->contents, h->object_base, obj_size);
+
+  /* If the object just copied was the only data in OLD_CHUNK, */
+  /* free that chunk and remove it from the chain. */
+  /* But not if that chunk might contain an empty object.  */
+  if (h->object_base == old_chunk->contents && ! h->maybe_empty_object)
+    {
+      new_chunk->prev = old_chunk->prev;
+      CALL_FREEFUN (h, old_chunk);
+    }
+
+  h->object_base = new_chunk->contents;
+  h->next_free = h->object_base + obj_size;
+  /* The new chunk certainly contains no empty object yet.  */
+  h->maybe_empty_object = 0;
+}
+
+/* Return nonzero if object OBJ has been allocated from obstack H.
+   This is here for debugging.
+   If you use it in a program, you are probably losing.  */
+
+#if defined (__STDC__) && __STDC__
+/* Suppress -Wmissing-prototypes warning.  We don't want to declare this in
+   obstack.h because it is just for debugging.  */
+int _obstack_allocated_p (struct obstack *h, POINTER obj);
+#endif
+
+int
+_obstack_allocated_p (h, obj)
+     struct obstack *h;
+     POINTER obj;
+{
+  register struct _obstack_chunk *lp;	/* below addr of any objects in this chunk */
+  register struct _obstack_chunk *plp;	/* point to previous chunk if any */
+
+  lp = (h)->chunk;
+  /* We use >= rather than > since the object cannot be exactly at
+     the beginning of the chunk but might be an empty object exactly
+     at the end of an adjacent chunk.  */
+  while (lp != 0 && ((POINTER) lp >= obj || (POINTER) (lp)->limit < obj))
+    {
+      plp = lp->prev;
+      lp = plp;
+    }
+  return lp != 0;
+}
+
+/* Free objects in obstack H, including OBJ and everything allocate
+   more recently than OBJ.  If OBJ is zero, free everything in H.  */
+
+#undef obstack_free
+
+/* This function has two names with identical definitions.
+   This is the first one, called from non-ANSI code.  */
+
+void
+_obstack_free (h, obj)
+     struct obstack *h;
+     POINTER obj;
+{
+  register struct _obstack_chunk *lp;	/* below addr of any objects in this chunk */
+  register struct _obstack_chunk *plp;	/* point to previous chunk if any */
+
+  lp = h->chunk;
+  /* We use >= because there cannot be an object at the beginning of a chunk.
+     But there can be an empty object at that address
+     at the end of another chunk.  */
+  while (lp != 0 && ((POINTER) lp >= obj || (POINTER) (lp)->limit < obj))
+    {
+      plp = lp->prev;
+      CALL_FREEFUN (h, lp);
+      lp = plp;
+      /* If we switch chunks, we can't tell whether the new current
+	 chunk contains an empty object, so assume that it may.  */
+      h->maybe_empty_object = 1;
+    }
+  if (lp)
+    {
+      h->object_base = h->next_free = (char *) (obj);
+      h->chunk_limit = lp->limit;
+      h->chunk = lp;
+    }
+  else if (obj != 0)
+    /* obj is not in any of the chunks! */
+    abort ();
+}
+
+/* This function is used from ANSI code.  */
+
+void
+obstack_free (h, obj)
+     struct obstack *h;
+     POINTER obj;
+{
+  register struct _obstack_chunk *lp;	/* below addr of any objects in this chunk */
+  register struct _obstack_chunk *plp;	/* point to previous chunk if any */
+
+  lp = h->chunk;
+  /* We use >= because there cannot be an object at the beginning of a chunk.
+     But there can be an empty object at that address
+     at the end of another chunk.  */
+  while (lp != 0 && ((POINTER) lp >= obj || (POINTER) (lp)->limit < obj))
+    {
+      plp = lp->prev;
+      CALL_FREEFUN (h, lp);
+      lp = plp;
+      /* If we switch chunks, we can't tell whether the new current
+	 chunk contains an empty object, so assume that it may.  */
+      h->maybe_empty_object = 1;
+    }
+  if (lp)
+    {
+      h->object_base = h->next_free = (char *) (obj);
+      h->chunk_limit = lp->limit;
+      h->chunk = lp;
+    }
+  else if (obj != 0)
+    /* obj is not in any of the chunks! */
+    abort ();
+}
+
+int
+_obstack_memory_used (h)
+     struct obstack *h;
+{
+  register struct _obstack_chunk* lp;
+  register int nbytes = 0;
+
+  for (lp = h->chunk; lp != 0; lp = lp->prev)
+    {
+      nbytes += lp->limit - (char *) lp;
+    }
+  return nbytes;
+}
+
+/* Define the error handler.  */
+#ifndef _
+# ifdef HAVE_LIBINTL_H
+#  include <libintl.h>
+#  ifndef _
+#   define _(Str) gettext (Str)
+#  endif
+# else
+#  define _(Str) (Str)
+# endif
+#endif
+
+static void
+print_and_abort ()
+{
+  fputs (_("memory exhausted\n"), stderr);
+  exit (obstack_exit_failure);
+}
+
+#if 0
+/* These are now turned off because the applications do not use it
+   and it uses bcopy via obstack_grow, which causes trouble on sysV.  */
+
+/* Now define the functional versions of the obstack macros.
+   Define them to simply use the corresponding macros to do the job.  */
+
+#if defined (__STDC__) && __STDC__
+/* These function definitions do not work with non-ANSI preprocessors;
+   they won't pass through the macro names in parentheses.  */
+
+/* The function names appear in parentheses in order to prevent
+   the macro-definitions of the names from being expanded there.  */
+
+POINTER (obstack_base) (obstack)
+     struct obstack *obstack;
+{
+  return obstack_base (obstack);
+}
+
+POINTER (obstack_next_free) (obstack)
+     struct obstack *obstack;
+{
+  return obstack_next_free (obstack);
+}
+
+int (obstack_object_size) (obstack)
+     struct obstack *obstack;
+{
+  return obstack_object_size (obstack);
+}
+
+int (obstack_room) (obstack)
+     struct obstack *obstack;
+{
+  return obstack_room (obstack);
+}
+
+int (obstack_make_room) (obstack, length)
+     struct obstack *obstack;
+     int length;
+{
+  return obstack_make_room (obstack, length);
+}
+
+void (obstack_grow) (obstack, pointer, length)
+     struct obstack *obstack;
+     POINTER pointer;
+     int length;
+{
+  obstack_grow (obstack, pointer, length);
+}
+
+void (obstack_grow0) (obstack, pointer, length)
+     struct obstack *obstack;
+     POINTER pointer;
+     int length;
+{
+  obstack_grow0 (obstack, pointer, length);
+}
+
+void (obstack_1grow) (obstack, character)
+     struct obstack *obstack;
+     int character;
+{
+  obstack_1grow (obstack, character);
+}
+
+void (obstack_blank) (obstack, length)
+     struct obstack *obstack;
+     int length;
+{
+  obstack_blank (obstack, length);
+}
+
+void (obstack_1grow_fast) (obstack, character)
+     struct obstack *obstack;
+     int character;
+{
+  obstack_1grow_fast (obstack, character);
+}
+
+void (obstack_blank_fast) (obstack, length)
+     struct obstack *obstack;
+     int length;
+{
+  obstack_blank_fast (obstack, length);
+}
+
+POINTER (obstack_finish) (obstack)
+     struct obstack *obstack;
+{
+  return obstack_finish (obstack);
+}
+
+POINTER (obstack_alloc) (obstack, length)
+     struct obstack *obstack;
+     int length;
+{
+  return obstack_alloc (obstack, length);
+}
+
+POINTER (obstack_copy) (obstack, pointer, length)
+     struct obstack *obstack;
+     POINTER pointer;
+     int length;
+{
+  return obstack_copy (obstack, pointer, length);
+}
+
+POINTER (obstack_copy0) (obstack, pointer, length)
+     struct obstack *obstack;
+     POINTER pointer;
+     int length;
+{
+  return obstack_copy0 (obstack, pointer, length);
+}
+
+#endif /* __STDC__ */
+
+#endif /* 0 */
+
+#endif	/* !ELIDE_CODE */
diff --git a/src/sed/lib/obstack.h b/src/sed/lib/obstack.h
new file mode 100644
index 0000000..f77825c
--- /dev/null
+++ b/src/sed/lib/obstack.h
@@ -0,0 +1,609 @@
+/* obstack.h - object stack macros
+   Copyright (C) 1988,89,90,91,92,93,94,96,97,98,99 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.  Its master source is NOT part of
+   the C library, however.  The master source lives in /gd/gnu/lib.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+/* Summary:
+
+All the apparent functions defined here are macros. The idea
+is that you would use these pre-tested macros to solve a
+very specific set of problems, and they would run fast.
+Caution: no side-effects in arguments please!! They may be
+evaluated MANY times!!
+
+These macros operate a stack of objects.  Each object starts life
+small, and may grow to maturity.  (Consider building a word syllable
+by syllable.)  An object can move while it is growing.  Once it has
+been "finished" it never changes address again.  So the "top of the
+stack" is typically an immature growing object, while the rest of the
+stack is of mature, fixed size and fixed address objects.
+
+These routines grab large chunks of memory, using a function you
+supply, called `obstack_chunk_alloc'.  On occasion, they free chunks,
+by calling `obstack_chunk_free'.  You must define them and declare
+them before using any obstack macros.
+
+Each independent stack is represented by a `struct obstack'.
+Each of the obstack macros expects a pointer to such a structure
+as the first argument.
+
+One motivation for this package is the problem of growing char strings
+in symbol tables.  Unless you are "fascist pig with a read-only mind"
+--Gosper's immortal quote from HAKMEM item 154, out of context--you
+would not like to put any arbitrary upper limit on the length of your
+symbols.
+
+In practice this often means you will build many short symbols and a
+few long symbols.  At the time you are reading a symbol you don't know
+how long it is.  One traditional method is to read a symbol into a
+buffer, realloc()ating the buffer every time you try to read a symbol
+that is longer than the buffer.  This is beaut, but you still will
+want to copy the symbol from the buffer to a more permanent
+symbol-table entry say about half the time.
+
+With obstacks, you can work differently.  Use one obstack for all symbol
+names.  As you read a symbol, grow the name in the obstack gradually.
+When the name is complete, finalize it.  Then, if the symbol exists already,
+free the newly read name.
+
+The way we do this is to take a large chunk, allocating memory from
+low addresses.  When you want to build a symbol in the chunk you just
+add chars above the current "high water mark" in the chunk.  When you
+have finished adding chars, because you got to the end of the symbol,
+you know how long the chars are, and you can create a new object.
+Mostly the chars will not burst over the highest address of the chunk,
+because you would typically expect a chunk to be (say) 100 times as
+long as an average object.
+
+In case that isn't clear, when we have enough chars to make up
+the object, THEY ARE ALREADY CONTIGUOUS IN THE CHUNK (guaranteed)
+so we just point to it where it lies.  No moving of chars is
+needed and this is the second win: potentially long strings need
+never be explicitly shuffled. Once an object is formed, it does not
+change its address during its lifetime.
+
+When the chars burst over a chunk boundary, we allocate a larger
+chunk, and then copy the partly formed object from the end of the old
+chunk to the beginning of the new larger chunk.  We then carry on
+accreting characters to the end of the object as we normally would.
+
+A special macro is provided to add a single char at a time to a
+growing object.  This allows the use of register variables, which
+break the ordinary 'growth' macro.
+
+Summary:
+	We allocate large chunks.
+	We carve out one object at a time from the current chunk.
+	Once carved, an object never moves.
+	We are free to append data of any size to the currently
+	  growing object.
+	Exactly one object is growing in an obstack at any one time.
+	You can run one obstack per control block.
+	You may have as many control blocks as you dare.
+	Because of the way we do it, you can `unwind' an obstack
+	  back to a previous state. (You may remove objects much
+	  as you would with a stack.)
+*/
+
+
+/* Don't do the contents of this file more than once.  */
+
+#ifndef _OBSTACK_H
+#define _OBSTACK_H 1
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* We use subtraction of (char *) 0 instead of casting to int
+   because on word-addressable machines a simple cast to int
+   may ignore the byte-within-word field of the pointer.  */
+
+#ifndef __PTR_TO_INT
+# define __PTR_TO_INT(P) ((P) - (char *) 0)
+#endif
+
+#ifndef __INT_TO_PTR
+# define __INT_TO_PTR(P) ((P) + (char *) 0)
+#endif
+
+/* We need the type of the resulting object.  If __PTRDIFF_TYPE__ is
+   defined, as with GNU C, use that; that way we don't pollute the
+   namespace with <stddef.h>'s symbols.  Otherwise, if <stddef.h> is
+   available, include it and use ptrdiff_t.  In traditional C, long is
+   the best that we can do.  */
+
+#ifdef __PTRDIFF_TYPE__
+# define PTR_INT_TYPE __PTRDIFF_TYPE__
+#else
+# ifdef HAVE_STDDEF_H
+#  include <stddef.h>
+#  define PTR_INT_TYPE ptrdiff_t
+# else
+#  define PTR_INT_TYPE long
+# endif
+#endif
+
+#if defined _LIBC || defined HAVE_STRING_H
+# include <string.h>
+# define _obstack_memcpy(To, From, N) memcpy ((To), (From), (N))
+#else
+# ifdef memcpy
+#  define _obstack_memcpy(To, From, N) memcpy ((To), (From), (N))
+# else
+#  define _obstack_memcpy(To, From, N) bcopy ((From), (To), (N))
+# endif
+#endif
+
+struct _obstack_chunk		/* Lives at front of each chunk. */
+{
+  char  *limit;			/* 1 past end of this chunk */
+  struct _obstack_chunk *prev;	/* address of prior chunk or NULL */
+  char	contents[4];		/* objects begin here */
+};
+
+struct obstack		/* control current object in current chunk */
+{
+  long	chunk_size;		/* preferred size to allocate chunks in */
+  struct _obstack_chunk *chunk;	/* address of current struct obstack_chunk */
+  char	*object_base;		/* address of object we are building */
+  char	*next_free;		/* where to add next char to current object */
+  char	*chunk_limit;		/* address of char after current chunk */
+  PTR_INT_TYPE temp;		/* Temporary for some macros.  */
+  int   alignment_mask;		/* Mask of alignment for each object. */
+#if defined __STDC__ && __STDC__
+  /* These prototypes vary based on `use_extra_arg', and we use
+     casts to the prototypeless function type in all assignments,
+     but having prototypes here quiets -Wstrict-prototypes.  */
+  struct _obstack_chunk *(*chunkfun) (void *, long);
+  void (*freefun) (void *, struct _obstack_chunk *);
+  void *extra_arg;		/* first arg for chunk alloc/dealloc funcs */
+#else
+  struct _obstack_chunk *(*chunkfun) (); /* User's fcn to allocate a chunk.  */
+  void (*freefun) ();		/* User's function to free a chunk.  */
+  char *extra_arg;		/* first arg for chunk alloc/dealloc funcs */
+#endif
+  unsigned use_extra_arg:1;	/* chunk alloc/dealloc funcs take extra arg */
+  unsigned maybe_empty_object:1;/* There is a possibility that the current
+				   chunk contains a zero-length object.  This
+				   prevents freeing the chunk if we allocate
+				   a bigger chunk to replace it. */
+  unsigned alloc_failed:1;	/* No longer used, as we now call the failed
+				   handler on error, but retained for binary
+				   compatibility.  */
+};
+
+/* Declare the external functions we use; they are in obstack.c.  */
+
+#if defined __STDC__ && __STDC__
+extern void _obstack_newchunk (struct obstack *, int);
+extern void _obstack_free (struct obstack *, void *);
+extern int _obstack_begin (struct obstack *, int, int,
+			    void *(*) (long), void (*) (void *));
+extern int _obstack_begin_1 (struct obstack *, int, int,
+			     void *(*) (void *, long),
+			     void (*) (void *, void *), void *);
+extern int _obstack_memory_used (struct obstack *);
+#else
+extern void _obstack_newchunk ();
+extern void _obstack_free ();
+extern int _obstack_begin ();
+extern int _obstack_begin_1 ();
+extern int _obstack_memory_used ();
+#endif
+
+#if defined __STDC__ && __STDC__
+
+/* Do the function-declarations after the structs
+   but before defining the macros.  */
+
+void obstack_init (struct obstack *obstack);
+
+void * obstack_alloc (struct obstack *obstack, int size);
+
+void * obstack_copy (struct obstack *obstack, const void *address, int size);
+void * obstack_copy0 (struct obstack *obstack, const void *address, int size);
+
+void obstack_free (struct obstack *obstack, void *block);
+
+void obstack_blank (struct obstack *obstack, int size);
+
+void obstack_grow (struct obstack *obstack, const void *data, int size);
+void obstack_grow0 (struct obstack *obstack, const void *data, int size);
+
+void obstack_1grow (struct obstack *obstack, int data_char);
+void obstack_ptr_grow (struct obstack *obstack, const void *data);
+void obstack_int_grow (struct obstack *obstack, int data);
+
+void * obstack_finish (struct obstack *obstack);
+
+int obstack_object_size (struct obstack *obstack);
+
+int obstack_room (struct obstack *obstack);
+void obstack_make_room (struct obstack *obstack, int size);
+void obstack_1grow_fast (struct obstack *obstack, int data_char);
+void obstack_ptr_grow_fast (struct obstack *obstack, const void *data);
+void obstack_int_grow_fast (struct obstack *obstack, int data);
+void obstack_blank_fast (struct obstack *obstack, int size);
+
+void * obstack_base (struct obstack *obstack);
+void * obstack_next_free (struct obstack *obstack);
+int obstack_alignment_mask (struct obstack *obstack);
+int obstack_chunk_size (struct obstack *obstack);
+int obstack_memory_used (struct obstack *obstack);
+
+#endif /* __STDC__ */
+
+/* Non-ANSI C cannot really support alternative functions for these macros,
+   so we do not declare them.  */
+
+/* Error handler called when `obstack_chunk_alloc' failed to allocate
+   more memory.  This can be set to a user defined function which
+   should either abort gracefully or use longjump - but shouldn't
+   return.  The default action is to print a message and abort.  */
+#if defined __STDC__ && __STDC__
+extern void (*obstack_alloc_failed_handler) (void);
+#else
+extern void (*obstack_alloc_failed_handler) ();
+#endif
+
+/* Exit value used when `print_and_abort' is used.  */
+extern int obstack_exit_failure;
+
+/* Pointer to beginning of object being allocated or to be allocated next.
+   Note that this might not be the final address of the object
+   because a new chunk might be needed to hold the final size.  */
+
+#define obstack_base(h) ((h)->object_base)
+
+/* Size for allocating ordinary chunks.  */
+
+#define obstack_chunk_size(h) ((h)->chunk_size)
+
+/* Pointer to next byte not yet allocated in current chunk.  */
+
+#define obstack_next_free(h)	((h)->next_free)
+
+/* Mask specifying low bits that should be clear in address of an object.  */
+
+#define obstack_alignment_mask(h) ((h)->alignment_mask)
+
+/* To prevent prototype warnings provide complete argument list in
+   standard C version.  */
+#if defined __STDC__ && __STDC__
+
+# define obstack_init(h)					\
+  _obstack_begin ((h), 0, 0,					\
+		  (void *(*) (long)) obstack_chunk_alloc, 	\
+		  (void (*) (void *)) obstack_chunk_free)
+
+# define obstack_begin(h, size)					\
+  _obstack_begin ((h), (size), 0,				\
+		  (void *(*) (long)) obstack_chunk_alloc, 	\
+		  (void (*) (void *)) obstack_chunk_free)
+
+# define obstack_specify_allocation(h, size, alignment, chunkfun, freefun) \
+  _obstack_begin ((h), (size), (alignment),				   \
+		  (void *(*) (long)) (chunkfun), 			   \
+		  (void (*) (void *)) (freefun))
+
+# define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \
+  _obstack_begin_1 ((h), (size), (alignment),				\
+		    (void *(*) (void *, long)) (chunkfun),		\
+		    (void (*) (void *, void *)) (freefun), (arg))
+
+# define obstack_chunkfun(h, newchunkfun) \
+  ((h) -> chunkfun = (struct _obstack_chunk *(*)(void *, long)) (newchunkfun))
+
+# define obstack_freefun(h, newfreefun) \
+  ((h) -> freefun = (void (*)(void *, struct _obstack_chunk *)) (newfreefun))
+
+#else
+
+# define obstack_init(h)						\
+  _obstack_begin ((h), 0, 0,						\
+		  (void *(*) ()) obstack_chunk_alloc, 			\
+		  (void (*) ()) obstack_chunk_free)
+
+# define obstack_begin(h, size)						\
+  _obstack_begin ((h), (size), 0,					\
+		  (void *(*) ()) obstack_chunk_alloc,			\
+		  (void (*) ()) obstack_chunk_free)
+
+# define obstack_specify_allocation(h, size, alignment, chunkfun, freefun) \
+  _obstack_begin ((h), (size), (alignment),				   \
+		  (void *(*) ()) (chunkfun), 				   \
+		  (void (*) ()) (freefun))
+
+# define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \
+  _obstack_begin_1 ((h), (size), (alignment),				\
+		    (void *(*) ()) (chunkfun), 				\
+		    (void (*) ()) (freefun), (arg))
+
+# define obstack_chunkfun(h, newchunkfun) \
+  ((h) -> chunkfun = (struct _obstack_chunk *(*)()) (newchunkfun))
+
+# define obstack_freefun(h, newfreefun) \
+  ((h) -> freefun = (void (*)()) (newfreefun))
+
+#endif
+
+#define obstack_1grow_fast(h,achar) (*((h)->next_free)++ = achar)
+
+#define obstack_blank_fast(h,n) ((h)->next_free += (n))
+
+#define obstack_memory_used(h) _obstack_memory_used (h)
+
+#if defined __GNUC__ && defined __STDC__ && __STDC__
+/* NextStep 2.0 cc is really gcc 1.93 but it defines __GNUC__ = 2 and
+   does not implement __extension__.  But that compiler doesn't define
+   __GNUC_MINOR__.  */
+# if __GNUC__ < 2 || (__NeXT__ && !__GNUC_MINOR__)
+#  define __extension__
+# endif
+
+/* For GNU C, if not -traditional,
+   we can define these macros to compute all args only once
+   without using a global variable.
+   Also, we can avoid using the `temp' slot, to make faster code.  */
+
+# define obstack_object_size(OBSTACK)					\
+  __extension__								\
+  ({ struct obstack *__o = (OBSTACK);					\
+     (unsigned) (__o->next_free - __o->object_base); })
+
+# define obstack_room(OBSTACK)						\
+  __extension__								\
+  ({ struct obstack *__o = (OBSTACK);					\
+     (unsigned) (__o->chunk_limit - __o->next_free); })
+
+# define obstack_make_room(OBSTACK,length)				\
+__extension__								\
+({ struct obstack *__o = (OBSTACK);					\
+   int __len = (length);						\
+   if (__o->chunk_limit - __o->next_free < __len)			\
+     _obstack_newchunk (__o, __len);					\
+   (void) 0; })
+
+# define obstack_empty_p(OBSTACK)					\
+  __extension__								\
+  ({ struct obstack *__o = (OBSTACK);					\
+     (__o->chunk->prev == 0 && __o->next_free - __o->chunk->contents == 0); })
+
+# define obstack_grow(OBSTACK,where,length)				\
+__extension__								\
+({ struct obstack *__o = (OBSTACK);					\
+   int __len = (length);						\
+   if (__o->next_free + __len > __o->chunk_limit)			\
+     _obstack_newchunk (__o, __len);					\
+   _obstack_memcpy (__o->next_free, (where), __len);			\
+   __o->next_free += __len;						\
+   (void) 0; })
+
+# define obstack_grow0(OBSTACK,where,length)				\
+__extension__								\
+({ struct obstack *__o = (OBSTACK);					\
+   int __len = (length);						\
+   if (__o->next_free + __len + 1 > __o->chunk_limit)			\
+     _obstack_newchunk (__o, __len + 1);				\
+   _obstack_memcpy (__o->next_free, (where), __len);			\
+   __o->next_free += __len;						\
+   *(__o->next_free)++ = 0;						\
+   (void) 0; })
+
+# define obstack_1grow(OBSTACK,datum)					\
+__extension__								\
+({ struct obstack *__o = (OBSTACK);					\
+   if (__o->next_free + 1 > __o->chunk_limit)				\
+     _obstack_newchunk (__o, 1);					\
+   *(__o->next_free)++ = (datum);					\
+   (void) 0; })
+
+/* These assume that the obstack alignment is good enough for pointers
+   or ints, and that the data added so far to the current object
+   shares that much alignment.  */
+
+# define obstack_ptr_grow(OBSTACK,datum)				\
+__extension__								\
+({ struct obstack *__o = (OBSTACK);					\
+   if (__o->next_free + sizeof (void *) > __o->chunk_limit)		\
+     _obstack_newchunk (__o, sizeof (void *));				\
+   ((*((void **)__o->next_free) = (datum)), (__o->next_free += sizeof (void *)));				\
+   (void) 0; })
+
+# define obstack_int_grow(OBSTACK,datum)				\
+__extension__								\
+({ struct obstack *__o = (OBSTACK);					\
+   if (__o->next_free + sizeof (int) > __o->chunk_limit)		\
+     _obstack_newchunk (__o, sizeof (int));				\
+   ((*((int *)__o->next_free) = (datum)), (__o->next_free += sizeof (int )));				\
+   (void) 0; })
+
+# define obstack_ptr_grow_fast(h,aptr)					\
+  (((*((void **) (h)->next_free) = (aptr)), ( (h)->next_free += sizeof (void *))))
+
+# define obstack_int_grow_fast(h,aint)					\
+  (((*((int *) (h)->next_free) = (aint)), ( (h)->next_free += sizeof (int ))))
+
+# define obstack_blank(OBSTACK,length)					\
+__extension__								\
+({ struct obstack *__o = (OBSTACK);					\
+   int __len = (length);						\
+   if (__o->chunk_limit - __o->next_free < __len)			\
+     _obstack_newchunk (__o, __len);					\
+   __o->next_free += __len;						\
+   (void) 0; })
+
+# define obstack_alloc(OBSTACK,length)					\
+__extension__								\
+({ struct obstack *__h = (OBSTACK);					\
+   obstack_blank (__h, (length));					\
+   obstack_finish (__h); })
+
+# define obstack_copy(OBSTACK,where,length)				\
+__extension__								\
+({ struct obstack *__h = (OBSTACK);					\
+   obstack_grow (__h, (where), (length));				\
+   obstack_finish (__h); })
+
+# define obstack_copy0(OBSTACK,where,length)				\
+__extension__								\
+({ struct obstack *__h = (OBSTACK);					\
+   obstack_grow0 (__h, (where), (length));				\
+   obstack_finish (__h); })
+
+/* The local variable is named __o1 to avoid a name conflict
+   when obstack_blank is called.  */
+# define obstack_finish(OBSTACK)  					\
+__extension__								\
+({ struct obstack *__o1 = (OBSTACK);					\
+   void *value;								\
+   value = (void *) __o1->object_base;					\
+   if (__o1->next_free == value)					\
+     __o1->maybe_empty_object = 1;					\
+   __o1->next_free							\
+     = __INT_TO_PTR ((__PTR_TO_INT (__o1->next_free)+__o1->alignment_mask)\
+		     & ~ (__o1->alignment_mask));			\
+   if (__o1->next_free - (char *)__o1->chunk				\
+       > __o1->chunk_limit - (char *)__o1->chunk)			\
+     __o1->next_free = __o1->chunk_limit;				\
+   __o1->object_base = __o1->next_free;					\
+   value; })
+
+# define obstack_free(OBSTACK, OBJ)					\
+__extension__								\
+({ struct obstack *__o = (OBSTACK);					\
+   void *__obj = (OBJ);							\
+   if (__obj > (void *)__o->chunk && __obj < (void *)__o->chunk_limit)  \
+     __o->next_free = __o->object_base = (char *)__obj;			\
+   else (obstack_free) (__o, __obj); })
+
+#else /* not __GNUC__ or not __STDC__ */
+
+# define obstack_object_size(h) \
+ (unsigned) ((h)->next_free - (h)->object_base)
+
+# define obstack_room(h)		\
+ (unsigned) ((h)->chunk_limit - (h)->next_free)
+
+# define obstack_empty_p(h) \
+ ((h)->chunk->prev == 0 && (h)->next_free - (h)->chunk->contents == 0)
+
+/* Note that the call to _obstack_newchunk is enclosed in (..., 0)
+   so that we can avoid having void expressions
+   in the arms of the conditional expression.
+   Casting the third operand to void was tried before,
+   but some compilers won't accept it.  */
+
+# define obstack_make_room(h,length)					\
+( (h)->temp = (length),							\
+  (((h)->next_free + (h)->temp > (h)->chunk_limit)			\
+   ? (_obstack_newchunk ((h), (h)->temp), 0) : 0))
+
+# define obstack_grow(h,where,length)					\
+( (h)->temp = (length),							\
+  (((h)->next_free + (h)->temp > (h)->chunk_limit)			\
+   ? (_obstack_newchunk ((h), (h)->temp), 0) : 0),			\
+  _obstack_memcpy ((h)->next_free, (where), (h)->temp),			\
+  (h)->next_free += (h)->temp)
+
+# define obstack_grow0(h,where,length)					\
+( (h)->temp = (length),							\
+  (((h)->next_free + (h)->temp + 1 > (h)->chunk_limit)			\
+   ? (_obstack_newchunk ((h), (h)->temp + 1), 0) : 0),			\
+  _obstack_memcpy ((h)->next_free, (where), (h)->temp),			\
+  (h)->next_free += (h)->temp,						\
+  *((h)->next_free)++ = 0)
+
+# define obstack_1grow(h,datum)						\
+( (((h)->next_free + 1 > (h)->chunk_limit)				\
+   ? (_obstack_newchunk ((h), 1), 0) : 0),				\
+  (*((h)->next_free)++ = (datum)))
+
+# define obstack_ptr_grow(h,datum)					\
+( (((h)->next_free + sizeof (char *) > (h)->chunk_limit)		\
+   ? (_obstack_newchunk ((h), sizeof (char *)), 0) : 0),		\
+  (*((const char **) (((h)->next_free+=sizeof(char *))-sizeof(char *))) = (datum)))
+
+# define obstack_int_grow(h,datum)					\
+( (((h)->next_free + sizeof (int) > (h)->chunk_limit)			\
+   ? (_obstack_newchunk ((h), sizeof (int)), 0) : 0),			\
+  (*((int *) (((h)->next_free+=sizeof(int))-sizeof(int))) = (datum)))
+
+# define obstack_ptr_grow_fast(h,aptr)					\
+  (((*((const char **) (h)->next_free) = (aptr)), ( (h)->next_free += sizeof (const char *))))
+
+# define obstack_int_grow_fast(h,aint)					\
+  (((*((int *) (h)->next_free) = (aint)), ( (h)->next_free += sizeof (int ))))
+
+# define obstack_blank(h,length)					\
+( (h)->temp = (length),							\
+  (((h)->chunk_limit - (h)->next_free < (h)->temp)			\
+   ? (_obstack_newchunk ((h), (h)->temp), 0) : 0),			\
+  ((h)->next_free += (h)->temp))
+
+# define obstack_alloc(h,length)					\
+ (obstack_blank ((h), (length)), obstack_finish ((h)))
+
+# define obstack_copy(h,where,length)					\
+ (obstack_grow ((h), (where), (length)), obstack_finish ((h)))
+
+# define obstack_copy0(h,where,length)					\
+ (obstack_grow0 ((h), (where), (length)), obstack_finish ((h)))
+
+# define obstack_finish(h)  						\
+( ((h)->next_free == (h)->object_base					\
+   ? (((h)->maybe_empty_object = 1), 0)					\
+   : 0),								\
+  (h)->temp = __PTR_TO_INT ((h)->object_base),				\
+  (h)->next_free							\
+    = __INT_TO_PTR ((__PTR_TO_INT ((h)->next_free)+(h)->alignment_mask)	\
+		    & ~ ((h)->alignment_mask)),				\
+  (((h)->next_free - (char *) (h)->chunk				\
+    > (h)->chunk_limit - (char *) (h)->chunk)				\
+   ? ((h)->next_free = (h)->chunk_limit) : 0),				\
+  (h)->object_base = (h)->next_free,					\
+  __INT_TO_PTR ((h)->temp))
+
+# if defined __STDC__ && __STDC__
+#  define obstack_free(h,obj)						\
+( (h)->temp = (char *) (obj) - (char *) (h)->chunk,			\
+  (((h)->temp > 0 && (h)->temp < (h)->chunk_limit - (char *) (h)->chunk)\
+   ? (int) ((h)->next_free = (h)->object_base				\
+	    = (h)->temp + (char *) (h)->chunk)				\
+   : (((obstack_free) ((h), (h)->temp + (char *) (h)->chunk), 0), 0)))
+# else
+#  define obstack_free(h,obj)						\
+( (h)->temp = (char *) (obj) - (char *) (h)->chunk,			\
+  (((h)->temp > 0 && (h)->temp < (h)->chunk_limit - (char *) (h)->chunk)\
+   ? (int) ((h)->next_free = (h)->object_base				\
+	    = (h)->temp + (char *) (h)->chunk)				\
+   : (_obstack_free ((h), (h)->temp + (char *) (h)->chunk), 0)))
+# endif
+
+#endif /* not __GNUC__ or not __STDC__ */
+
+#ifdef __cplusplus
+}	/* C++ */
+#endif
+
+#endif /* obstack.h */
diff --git a/src/sed/lib/regcomp.c b/src/sed/lib/regcomp.c
new file mode 100644
index 0000000..cb2854f
--- /dev/null
+++ b/src/sed/lib/regcomp.c
@@ -0,0 +1,3811 @@
+/* Extended regular expression matching and search library.
+   Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+static reg_errcode_t re_compile_internal (regex_t *preg, const char * pattern,
+					  size_t length, reg_syntax_t syntax);
+static void re_compile_fastmap_iter (regex_t *bufp,
+				     const re_dfastate_t *init_state,
+				     char *fastmap);
+static reg_errcode_t init_dfa (re_dfa_t *dfa, size_t pat_len);
+#ifdef RE_ENABLE_I18N
+static void free_charset (re_charset_t *cset);
+#endif /* RE_ENABLE_I18N */
+static void free_workarea_compile (regex_t *preg);
+static reg_errcode_t create_initial_state (re_dfa_t *dfa);
+#ifdef RE_ENABLE_I18N
+static void optimize_utf8 (re_dfa_t *dfa);
+#endif
+static reg_errcode_t analyze (regex_t *preg);
+static reg_errcode_t preorder (bin_tree_t *root,
+			       reg_errcode_t (fn (void *, bin_tree_t *)),
+			       void *extra);
+static reg_errcode_t postorder (bin_tree_t *root,
+				reg_errcode_t (fn (void *, bin_tree_t *)),
+				void *extra);
+static reg_errcode_t optimize_subexps (void *extra, bin_tree_t *node);
+static reg_errcode_t lower_subexps (void *extra, bin_tree_t *node);
+static bin_tree_t *lower_subexp (reg_errcode_t *err, regex_t *preg,
+				 bin_tree_t *node);
+static reg_errcode_t calc_first (void *extra, bin_tree_t *node);
+static reg_errcode_t calc_next (void *extra, bin_tree_t *node);
+static reg_errcode_t link_nfa_nodes (void *extra, bin_tree_t *node);
+static int duplicate_node (re_dfa_t *dfa, int org_idx, unsigned int constraint);
+static int search_duplicated_node (const re_dfa_t *dfa, int org_node,
+				   unsigned int constraint);
+static reg_errcode_t calc_eclosure (re_dfa_t *dfa);
+static reg_errcode_t calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa,
+					 int node, int root);
+static reg_errcode_t calc_inveclosure (re_dfa_t *dfa);
+static int fetch_number (re_string_t *input, re_token_t *token,
+			 reg_syntax_t syntax);
+static int peek_token (re_token_t *token, re_string_t *input,
+			reg_syntax_t syntax) internal_function;
+static bin_tree_t *parse (re_string_t *regexp, regex_t *preg,
+			  reg_syntax_t syntax, reg_errcode_t *err);
+static bin_tree_t *parse_reg_exp (re_string_t *regexp, regex_t *preg,
+				  re_token_t *token, reg_syntax_t syntax,
+				  int nest, reg_errcode_t *err);
+static bin_tree_t *parse_branch (re_string_t *regexp, regex_t *preg,
+				 re_token_t *token, reg_syntax_t syntax,
+				 int nest, reg_errcode_t *err);
+static bin_tree_t *parse_expression (re_string_t *regexp, regex_t *preg,
+				     re_token_t *token, reg_syntax_t syntax,
+				     int nest, reg_errcode_t *err);
+static bin_tree_t *parse_sub_exp (re_string_t *regexp, regex_t *preg,
+				  re_token_t *token, reg_syntax_t syntax,
+				  int nest, reg_errcode_t *err);
+static bin_tree_t *parse_dup_op (bin_tree_t *dup_elem, re_string_t *regexp,
+				 re_dfa_t *dfa, re_token_t *token,
+				 reg_syntax_t syntax, reg_errcode_t *err);
+static bin_tree_t *parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa,
+				      re_token_t *token, reg_syntax_t syntax,
+				      reg_errcode_t *err);
+static reg_errcode_t parse_bracket_element (bracket_elem_t *elem,
+					    re_string_t *regexp,
+					    re_token_t *token, int token_len,
+					    re_dfa_t *dfa,
+					    reg_syntax_t syntax,
+					    int accept_hyphen);
+static reg_errcode_t parse_bracket_symbol (bracket_elem_t *elem,
+					  re_string_t *regexp,
+					  re_token_t *token);
+#ifdef RE_ENABLE_I18N
+static reg_errcode_t build_equiv_class (bitset_t sbcset,
+					re_charset_t *mbcset,
+					int *equiv_class_alloc,
+					const unsigned char *name);
+static reg_errcode_t build_charclass (RE_TRANSLATE_TYPE trans,
+				      bitset_t sbcset,
+				      re_charset_t *mbcset,
+				      int *char_class_alloc,
+				      const unsigned char *class_name,
+				      reg_syntax_t syntax);
+#else  /* not RE_ENABLE_I18N */
+static reg_errcode_t build_equiv_class (bitset_t sbcset,
+					const unsigned char *name);
+static reg_errcode_t build_charclass (RE_TRANSLATE_TYPE trans,
+				      bitset_t sbcset,
+				      const unsigned char *class_name,
+				      reg_syntax_t syntax);
+#endif /* not RE_ENABLE_I18N */
+static bin_tree_t *build_charclass_op (re_dfa_t *dfa,
+				       RE_TRANSLATE_TYPE trans,
+				       const unsigned char *class_name,
+				       const unsigned char *extra,
+				       int non_match, reg_errcode_t *err);
+static bin_tree_t *create_tree (re_dfa_t *dfa,
+				bin_tree_t *left, bin_tree_t *right,
+				re_token_type_t type);
+static bin_tree_t *create_token_tree (re_dfa_t *dfa,
+				      bin_tree_t *left, bin_tree_t *right,
+				      const re_token_t *token);
+static bin_tree_t *duplicate_tree (const bin_tree_t *src, re_dfa_t *dfa);
+static void free_token (re_token_t *node);
+static reg_errcode_t free_tree (void *extra, bin_tree_t *node);
+static reg_errcode_t mark_opt_subexp (void *extra, bin_tree_t *node);
+
+/* This table gives an error message for each of the error codes listed
+   in regex.h.  Obviously the order here has to be same as there.
+   POSIX doesn't require that we do anything for REG_NOERROR,
+   but why not be nice?  */
+
+const char __re_error_msgid[] attribute_hidden =
+  {
+#define REG_NOERROR_IDX	0
+    gettext_noop ("Success")	/* REG_NOERROR */
+    "\0"
+#define REG_NOMATCH_IDX (REG_NOERROR_IDX + sizeof "Success")
+    gettext_noop ("No match")	/* REG_NOMATCH */
+    "\0"
+#define REG_BADPAT_IDX	(REG_NOMATCH_IDX + sizeof "No match")
+    gettext_noop ("Invalid regular expression") /* REG_BADPAT */
+    "\0"
+#define REG_ECOLLATE_IDX (REG_BADPAT_IDX + sizeof "Invalid regular expression")
+    gettext_noop ("Invalid collation character") /* REG_ECOLLATE */
+    "\0"
+#define REG_ECTYPE_IDX	(REG_ECOLLATE_IDX + sizeof "Invalid collation character")
+    gettext_noop ("Invalid character class name") /* REG_ECTYPE */
+    "\0"
+#define REG_EESCAPE_IDX	(REG_ECTYPE_IDX + sizeof "Invalid character class name")
+    gettext_noop ("Trailing backslash") /* REG_EESCAPE */
+    "\0"
+#define REG_ESUBREG_IDX	(REG_EESCAPE_IDX + sizeof "Trailing backslash")
+    gettext_noop ("Invalid back reference") /* REG_ESUBREG */
+    "\0"
+#define REG_EBRACK_IDX	(REG_ESUBREG_IDX + sizeof "Invalid back reference")
+    gettext_noop ("Unmatched [ or [^")	/* REG_EBRACK */
+    "\0"
+#define REG_EPAREN_IDX	(REG_EBRACK_IDX + sizeof "Unmatched [ or [^")
+    gettext_noop ("Unmatched ( or \\(") /* REG_EPAREN */
+    "\0"
+#define REG_EBRACE_IDX	(REG_EPAREN_IDX + sizeof "Unmatched ( or \\(")
+    gettext_noop ("Unmatched \\{") /* REG_EBRACE */
+    "\0"
+#define REG_BADBR_IDX	(REG_EBRACE_IDX + sizeof "Unmatched \\{")
+    gettext_noop ("Invalid content of \\{\\}") /* REG_BADBR */
+    "\0"
+#define REG_ERANGE_IDX	(REG_BADBR_IDX + sizeof "Invalid content of \\{\\}")
+    gettext_noop ("Invalid range end")	/* REG_ERANGE */
+    "\0"
+#define REG_ESPACE_IDX	(REG_ERANGE_IDX + sizeof "Invalid range end")
+    gettext_noop ("Memory exhausted") /* REG_ESPACE */
+    "\0"
+#define REG_BADRPT_IDX	(REG_ESPACE_IDX + sizeof "Memory exhausted")
+    gettext_noop ("Invalid preceding regular expression") /* REG_BADRPT */
+    "\0"
+#define REG_EEND_IDX	(REG_BADRPT_IDX + sizeof "Invalid preceding regular expression")
+    gettext_noop ("Premature end of regular expression") /* REG_EEND */
+    "\0"
+#define REG_ESIZE_IDX	(REG_EEND_IDX + sizeof "Premature end of regular expression")
+    gettext_noop ("Regular expression too big") /* REG_ESIZE */
+    "\0"
+#define REG_ERPAREN_IDX	(REG_ESIZE_IDX + sizeof "Regular expression too big")
+    gettext_noop ("Unmatched ) or \\)") /* REG_ERPAREN */
+  };
+
+const size_t __re_error_msgid_idx[] attribute_hidden =
+  {
+    REG_NOERROR_IDX,
+    REG_NOMATCH_IDX,
+    REG_BADPAT_IDX,
+    REG_ECOLLATE_IDX,
+    REG_ECTYPE_IDX,
+    REG_EESCAPE_IDX,
+    REG_ESUBREG_IDX,
+    REG_EBRACK_IDX,
+    REG_EPAREN_IDX,
+    REG_EBRACE_IDX,
+    REG_BADBR_IDX,
+    REG_ERANGE_IDX,
+    REG_ESPACE_IDX,
+    REG_BADRPT_IDX,
+    REG_EEND_IDX,
+    REG_ESIZE_IDX,
+    REG_ERPAREN_IDX
+  };
+
+/* Entry points for GNU code.  */
+
+/* re_compile_pattern is the GNU regular expression compiler: it
+   compiles PATTERN (of length LENGTH) and puts the result in BUFP.
+   Returns 0 if the pattern was valid, otherwise an error string.
+
+   Assumes the `allocated' (and perhaps `buffer') and `translate' fields
+   are set in BUFP on entry.  */
+
+const char *
+re_compile_pattern (pattern, length, bufp)
+    const char *pattern;
+    size_t length;
+    struct re_pattern_buffer *bufp;
+{
+  reg_errcode_t ret;
+
+  /* And GNU code determines whether or not to get register information
+     by passing null for the REGS argument to re_match, etc., not by
+     setting no_sub, unless RE_NO_SUB is set.  */
+  bufp->no_sub = !!(re_syntax_options & RE_NO_SUB);
+
+  /* Match anchors at newline.  */
+  bufp->newline_anchor = 1;
+
+  ret = re_compile_internal (bufp, pattern, length, re_syntax_options);
+
+  if (!ret)
+    return NULL;
+  return gettext (__re_error_msgid + __re_error_msgid_idx[(int) ret]);
+}
+#ifdef _LIBC
+weak_alias (__re_compile_pattern, re_compile_pattern)
+#endif
+
+/* Set by `re_set_syntax' to the current regexp syntax to recognize.  Can
+   also be assigned to arbitrarily: each pattern buffer stores its own
+   syntax, so it can be changed between regex compilations.  */
+/* This has no initializer because initialized variables in Emacs
+   become read-only after dumping.  */
+reg_syntax_t re_syntax_options;
+
+
+/* Specify the precise syntax of regexps for compilation.  This provides
+   for compatibility for various utilities which historically have
+   different, incompatible syntaxes.
+
+   The argument SYNTAX is a bit mask comprised of the various bits
+   defined in regex.h.  We return the old syntax.  */
+
+reg_syntax_t
+re_set_syntax (syntax)
+    reg_syntax_t syntax;
+{
+  reg_syntax_t ret = re_syntax_options;
+
+  re_syntax_options = syntax;
+  return ret;
+}
+#ifdef _LIBC
+weak_alias (__re_set_syntax, re_set_syntax)
+#endif
+
+int
+re_compile_fastmap (bufp)
+    struct re_pattern_buffer *bufp;
+{
+  re_dfa_t *dfa = (re_dfa_t *) bufp->buffer;
+  char *fastmap = bufp->fastmap;
+
+  memset (fastmap, '\0', sizeof (char) * SBC_MAX);
+  re_compile_fastmap_iter (bufp, dfa->init_state, fastmap);
+  if (dfa->init_state != dfa->init_state_word)
+    re_compile_fastmap_iter (bufp, dfa->init_state_word, fastmap);
+  if (dfa->init_state != dfa->init_state_nl)
+    re_compile_fastmap_iter (bufp, dfa->init_state_nl, fastmap);
+  if (dfa->init_state != dfa->init_state_begbuf)
+    re_compile_fastmap_iter (bufp, dfa->init_state_begbuf, fastmap);
+  bufp->fastmap_accurate = 1;
+  return 0;
+}
+#ifdef _LIBC
+weak_alias (__re_compile_fastmap, re_compile_fastmap)
+#endif
+
+static inline void
+__attribute ((always_inline))
+re_set_fastmap (char *fastmap, int icase, int ch)
+{
+  fastmap[ch] = 1;
+  if (icase)
+    fastmap[tolower (ch)] = 1;
+}
+
+/* Helper function for re_compile_fastmap.
+   Compile fastmap for the initial_state INIT_STATE.  */
+
+static void
+re_compile_fastmap_iter (regex_t *bufp, const re_dfastate_t *init_state,
+			 char *fastmap)
+{
+  re_dfa_t *dfa = (re_dfa_t *) bufp->buffer;
+  int node_cnt;
+  int icase = (dfa->mb_cur_max == 1 && (bufp->syntax & RE_ICASE));
+  for (node_cnt = 0; node_cnt < init_state->nodes.nelem; ++node_cnt)
+    {
+      int node = init_state->nodes.elems[node_cnt];
+      re_token_type_t type = dfa->nodes[node].type;
+
+      if (type == CHARACTER)
+	{
+	  re_set_fastmap (fastmap, icase, dfa->nodes[node].opr.c);
+#ifdef RE_ENABLE_I18N
+	  if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
+	    {
+	      unsigned char *buf = alloca (dfa->mb_cur_max), *p;
+	      wchar_t wc;
+	      mbstate_t state;
+
+	      p = buf;
+	      *p++ = dfa->nodes[node].opr.c;
+	      while (++node < dfa->nodes_len
+		     &&	dfa->nodes[node].type == CHARACTER
+		     && dfa->nodes[node].mb_partial)
+		*p++ = dfa->nodes[node].opr.c;
+	      memset (&state, '\0', sizeof (state));
+	      if (mbrtowc (&wc, (const char *) buf, p - buf,
+			   &state) == p - buf
+		  && (__wcrtomb ((char *) buf, towlower (wc), &state)
+		      != (size_t) -1))
+		re_set_fastmap (fastmap, 0, buf[0]);
+	    }
+#endif
+	}
+      else if (type == SIMPLE_BRACKET)
+	{
+	  int i, ch;
+	  for (i = 0, ch = 0; i < BITSET_WORDS; ++i)
+	    {
+	      int j;
+	      bitset_word_t w = dfa->nodes[node].opr.sbcset[i];
+	      for (j = 0; j < BITSET_WORD_BITS; ++j, ++ch)
+		if (w & ((bitset_word_t) 1 << j))
+		  re_set_fastmap (fastmap, icase, ch);
+	    }
+	}
+#ifdef RE_ENABLE_I18N
+      else if (type == COMPLEX_BRACKET)
+	{
+	  int i;
+	  re_charset_t *cset = dfa->nodes[node].opr.mbcset;
+	  if (cset->non_match || cset->ncoll_syms || cset->nequiv_classes
+	      || cset->nranges || cset->nchar_classes)
+	    {
+# ifdef _LIBC
+	      if (_NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES) != 0)
+		{
+		  /* In this case we want to catch the bytes which are
+		     the first byte of any collation elements.
+		     e.g. In da_DK, we want to catch 'a' since "aa"
+			  is a valid collation element, and don't catch
+			  'b' since 'b' is the only collation element
+			  which starts from 'b'.  */
+		  const int32_t *table = (const int32_t *)
+		    _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
+		  for (i = 0; i < SBC_MAX; ++i)
+		    if (table[i] < 0)
+		      re_set_fastmap (fastmap, icase, i);
+		}
+# else
+	      if (dfa->mb_cur_max > 1)
+		for (i = 0; i < SBC_MAX; ++i)
+		  if (__btowc (i) == WEOF)
+		    re_set_fastmap (fastmap, icase, i);
+# endif /* not _LIBC */
+	    }
+	  for (i = 0; i < cset->nmbchars; ++i)
+	    {
+	      char buf[256];
+	      mbstate_t state;
+	      memset (&state, '\0', sizeof (state));
+	      if (__wcrtomb (buf, cset->mbchars[i], &state) != (size_t) -1)
+		re_set_fastmap (fastmap, icase, *(unsigned char *) buf);
+	      if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
+		{
+		  if (__wcrtomb (buf, towlower (cset->mbchars[i]), &state)
+		      != (size_t) -1)
+		    re_set_fastmap (fastmap, 0, *(unsigned char *) buf);
+		}
+	    }
+	}
+#endif /* RE_ENABLE_I18N */
+      else if (type == OP_PERIOD
+#ifdef RE_ENABLE_I18N
+	       || type == OP_UTF8_PERIOD
+#endif /* RE_ENABLE_I18N */
+	       || type == END_OF_RE)
+	{
+	  memset (fastmap, '\1', sizeof (char) * SBC_MAX);
+	  if (type == END_OF_RE)
+	    bufp->can_be_null = 1;
+	  return;
+	}
+    }
+}
+
+/* Entry point for POSIX code.  */
+/* regcomp takes a regular expression as a string and compiles it.
+
+   PREG is a regex_t *.  We do not expect any fields to be initialized,
+   since POSIX says we shouldn't.  Thus, we set
+
+     `buffer' to the compiled pattern;
+     `used' to the length of the compiled pattern;
+     `syntax' to RE_SYNTAX_POSIX_EXTENDED if the
+       REG_EXTENDED bit in CFLAGS is set; otherwise, to
+       RE_SYNTAX_POSIX_BASIC;
+     `newline_anchor' to REG_NEWLINE being set in CFLAGS;
+     `fastmap' to an allocated space for the fastmap;
+     `fastmap_accurate' to zero;
+     `re_nsub' to the number of subexpressions in PATTERN.
+
+   PATTERN is the address of the pattern string.
+
+   CFLAGS is a series of bits which affect compilation.
+
+     If REG_EXTENDED is set, we use POSIX extended syntax; otherwise, we
+     use POSIX basic syntax.
+
+     If REG_NEWLINE is set, then . and [^...] don't match newline.
+     Also, regexec will try a match beginning after every newline.
+
+     If REG_ICASE is set, then we considers upper- and lowercase
+     versions of letters to be equivalent when matching.
+
+     If REG_NOSUB is set, then when PREG is passed to regexec, that
+     routine will report only success or failure, and nothing about the
+     registers.
+
+   It returns 0 if it succeeds, nonzero if it doesn't.  (See regex.h for
+   the return codes and their meanings.)  */
+
+int
+regcomp (preg, pattern, cflags)
+    regex_t *__restrict preg;
+    const char *__restrict pattern;
+    int cflags;
+{
+  reg_errcode_t ret;
+  reg_syntax_t syntax = ((cflags & REG_EXTENDED) ? RE_SYNTAX_POSIX_EXTENDED
+			 : RE_SYNTAX_POSIX_BASIC);
+
+  preg->buffer = NULL;
+  preg->allocated = 0;
+  preg->used = 0;
+
+  /* Try to allocate space for the fastmap.  */
+  preg->fastmap = re_malloc (char, SBC_MAX);
+  if (BE (preg->fastmap == NULL, 0))
+    return REG_ESPACE;
+
+  syntax |= (cflags & REG_ICASE) ? RE_ICASE : 0;
+
+  /* If REG_NEWLINE is set, newlines are treated differently.  */
+  if (cflags & REG_NEWLINE)
+    { /* REG_NEWLINE implies neither . nor [^...] match newline.  */
+      syntax &= ~RE_DOT_NEWLINE;
+      syntax |= RE_HAT_LISTS_NOT_NEWLINE;
+      /* It also changes the matching behavior.  */
+      preg->newline_anchor = 1;
+    }
+  else
+    preg->newline_anchor = 0;
+  preg->no_sub = !!(cflags & REG_NOSUB);
+  preg->translate = NULL;
+
+  ret = re_compile_internal (preg, pattern, strlen (pattern), syntax);
+
+  /* POSIX doesn't distinguish between an unmatched open-group and an
+     unmatched close-group: both are REG_EPAREN.  */
+  if (ret == REG_ERPAREN)
+    ret = REG_EPAREN;
+
+  /* We have already checked preg->fastmap != NULL.  */
+  if (BE (ret == REG_NOERROR, 1))
+    /* Compute the fastmap now, since regexec cannot modify the pattern
+       buffer.  This function never fails in this implementation.  */
+    (void) re_compile_fastmap (preg);
+  else
+    {
+      /* Some error occurred while compiling the expression.  */
+      re_free (preg->fastmap);
+      preg->fastmap = NULL;
+    }
+
+  return (int) ret;
+}
+#ifdef _LIBC
+weak_alias (__regcomp, regcomp)
+#endif
+
+/* Returns a message corresponding to an error code, ERRCODE, returned
+   from either regcomp or regexec.   We don't use PREG here.  */
+
+size_t
+regerror (errcode, preg, errbuf, errbuf_size)
+    int errcode;
+    const regex_t *__restrict preg;
+    char *__restrict errbuf;
+    size_t errbuf_size;
+{
+  const char *msg;
+  size_t msg_size;
+
+  if (BE (errcode < 0
+	  || errcode >= (int) (sizeof (__re_error_msgid_idx)
+			       / sizeof (__re_error_msgid_idx[0])), 0))
+    /* Only error codes returned by the rest of the code should be passed
+       to this routine.  If we are given anything else, or if other regex
+       code generates an invalid error code, then the program has a bug.
+       Dump core so we can fix it.  */
+    abort ();
+
+  msg = gettext (__re_error_msgid + __re_error_msgid_idx[errcode]);
+
+  msg_size = strlen (msg) + 1; /* Includes the null.  */
+
+  if (BE (errbuf_size != 0, 1))
+    {
+      if (BE (msg_size > errbuf_size, 0))
+	{
+#if defined HAVE_MEMPCPY || defined _LIBC
+	  *((char *) __mempcpy (errbuf, msg, errbuf_size - 1)) = '\0';
+#else
+	  memcpy (errbuf, msg, errbuf_size - 1);
+	  errbuf[errbuf_size - 1] = 0;
+#endif
+	}
+      else
+	memcpy (errbuf, msg, msg_size);
+    }
+
+  return msg_size;
+}
+#ifdef _LIBC
+weak_alias (__regerror, regerror)
+#endif
+
+
+#ifdef RE_ENABLE_I18N
+/* This static array is used for the map to single-byte characters when
+   UTF-8 is used.  Otherwise we would allocate memory just to initialize
+   it the same all the time.  UTF-8 is the preferred encoding so this is
+   a worthwhile optimization.  */
+static const bitset_t utf8_sb_map =
+{
+    /* Set the first 128 bits.  */
+#ifdef _MSC_VER
+  BITSET_WORD_MAX, BITSET_WORD_MAX, BITSET_WORD_MAX, BITSET_WORD_MAX, 0, 0, 0, 0
+#else
+  [0 ... 0x80 / BITSET_WORD_BITS - 1] = BITSET_WORD_MAX
+#endif
+};
+#endif
+
+
+static void
+free_dfa_content (re_dfa_t *dfa)
+{
+  int i, j;
+
+  if (dfa->nodes)
+    for (i = 0; i < dfa->nodes_len; ++i)
+      free_token (dfa->nodes + i);
+  re_free (dfa->nexts);
+  for (i = 0; i < dfa->nodes_len; ++i)
+    {
+      if (dfa->eclosures != NULL)
+	re_node_set_free (dfa->eclosures + i);
+      if (dfa->inveclosures != NULL)
+	re_node_set_free (dfa->inveclosures + i);
+      if (dfa->edests != NULL)
+	re_node_set_free (dfa->edests + i);
+    }
+  re_free (dfa->edests);
+  re_free (dfa->eclosures);
+  re_free (dfa->inveclosures);
+  re_free (dfa->nodes);
+
+  if (dfa->state_table)
+    for (i = 0; i <= dfa->state_hash_mask; ++i)
+      {
+	struct re_state_table_entry *entry = dfa->state_table + i;
+	for (j = 0; j < entry->num; ++j)
+	  {
+	    re_dfastate_t *state = entry->array[j];
+	    free_state (state);
+	  }
+        re_free (entry->array);
+      }
+  re_free (dfa->state_table);
+#ifdef RE_ENABLE_I18N
+  if (dfa->sb_char != utf8_sb_map)
+    re_free (dfa->sb_char);
+#endif
+  re_free (dfa->subexp_map);
+#ifdef DEBUG
+  re_free (dfa->re_str);
+#endif
+
+  re_free (dfa);
+}
+
+
+/* Free dynamically allocated space used by PREG.  */
+
+void
+regfree (preg)
+    regex_t *preg;
+{
+  re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+  if (BE (dfa != NULL, 1))
+    free_dfa_content (dfa);
+  preg->buffer = NULL;
+  preg->allocated = 0;
+
+  re_free (preg->fastmap);
+  preg->fastmap = NULL;
+
+  re_free (preg->translate);
+  preg->translate = NULL;
+}
+#ifdef _LIBC
+weak_alias (__regfree, regfree)
+#endif
+
+/* Entry points compatible with 4.2 BSD regex library.  We don't define
+   them unless specifically requested.  */
+
+#if defined _REGEX_RE_COMP || defined _LIBC
+
+/* BSD has one and only one pattern buffer.  */
+static struct re_pattern_buffer re_comp_buf;
+
+char *
+# ifdef _LIBC
+/* Make these definitions weak in libc, so POSIX programs can redefine
+   these names if they don't use our functions, and still use
+   regcomp/regexec above without link errors.  */
+weak_function
+# endif
+re_comp (s)
+     const char *s;
+{
+  reg_errcode_t ret;
+  char *fastmap;
+
+  if (!s)
+    {
+      if (!re_comp_buf.buffer)
+	return gettext ("No previous regular expression");
+      return 0;
+    }
+
+  if (re_comp_buf.buffer)
+    {
+      fastmap = re_comp_buf.fastmap;
+      re_comp_buf.fastmap = NULL;
+      __regfree (&re_comp_buf);
+      memset (&re_comp_buf, '\0', sizeof (re_comp_buf));
+      re_comp_buf.fastmap = fastmap;
+    }
+
+  if (re_comp_buf.fastmap == NULL)
+    {
+      re_comp_buf.fastmap = (char *) malloc (SBC_MAX);
+      if (re_comp_buf.fastmap == NULL)
+	return (char *) gettext (__re_error_msgid
+				 + __re_error_msgid_idx[(int) REG_ESPACE]);
+    }
+
+  /* Since `re_exec' always passes NULL for the `regs' argument, we
+     don't need to initialize the pattern buffer fields which affect it.  */
+
+  /* Match anchors at newlines.  */
+  re_comp_buf.newline_anchor = 1;
+
+  ret = re_compile_internal (&re_comp_buf, s, strlen (s), re_syntax_options);
+
+  if (!ret)
+    return NULL;
+
+  /* Yes, we're discarding `const' here if !HAVE_LIBINTL.  */
+  return (char *) gettext (__re_error_msgid + __re_error_msgid_idx[(int) ret]);
+}
+
+#ifdef _LIBC
+libc_freeres_fn (free_mem)
+{
+  __regfree (&re_comp_buf);
+}
+#endif
+
+#endif /* _REGEX_RE_COMP */
+
+/* Internal entry point.
+   Compile the regular expression PATTERN, whose length is LENGTH.
+   SYNTAX indicate regular expression's syntax.  */
+
+static reg_errcode_t
+re_compile_internal (regex_t *preg, const char * pattern, size_t length,
+		     reg_syntax_t syntax)
+{
+  reg_errcode_t err = REG_NOERROR;
+  re_dfa_t *dfa;
+  re_string_t regexp;
+
+  /* Initialize the pattern buffer.  */
+  preg->fastmap_accurate = 0;
+  preg->syntax = syntax;
+  preg->not_bol = preg->not_eol = 0;
+  preg->used = 0;
+  preg->re_nsub = 0;
+  preg->can_be_null = 0;
+  preg->regs_allocated = REGS_UNALLOCATED;
+
+  /* Initialize the dfa.  */
+  dfa = (re_dfa_t *) preg->buffer;
+  if (BE (preg->allocated < sizeof (re_dfa_t), 0))
+    {
+      /* If zero allocated, but buffer is non-null, try to realloc
+	 enough space.  This loses if buffer's address is bogus, but
+	 that is the user's responsibility.  If ->buffer is NULL this
+	 is a simple allocation.  */
+      dfa = re_realloc (preg->buffer, re_dfa_t, 1);
+      if (dfa == NULL)
+	return REG_ESPACE;
+      preg->allocated = sizeof (re_dfa_t);
+      preg->buffer = (unsigned char *) dfa;
+    }
+  preg->used = sizeof (re_dfa_t);
+
+  err = init_dfa (dfa, length);
+  if (BE (err != REG_NOERROR, 0))
+    {
+      free_dfa_content (dfa);
+      preg->buffer = NULL;
+      preg->allocated = 0;
+      return err;
+    }
+#ifdef DEBUG
+  /* Note: length+1 will not overflow since it is checked in init_dfa.  */
+  dfa->re_str = re_malloc (char, length + 1);
+  strncpy (dfa->re_str, pattern, length + 1);
+#endif
+
+  __libc_lock_init (dfa->lock);
+
+  err = re_string_construct (&regexp, pattern, length, preg->translate,
+			     syntax & RE_ICASE, dfa);
+  if (BE (err != REG_NOERROR, 0))
+    {
+    re_compile_internal_free_return:
+      free_workarea_compile (preg);
+      re_string_destruct (&regexp);
+      free_dfa_content (dfa);
+      preg->buffer = NULL;
+      preg->allocated = 0;
+      return err;
+    }
+
+  /* Parse the regular expression, and build a structure tree.  */
+  preg->re_nsub = 0;
+  dfa->str_tree = parse (&regexp, preg, syntax, &err);
+  if (BE (dfa->str_tree == NULL, 0))
+    goto re_compile_internal_free_return;
+
+  /* Analyze the tree and create the nfa.  */
+  err = analyze (preg);
+  if (BE (err != REG_NOERROR, 0))
+    goto re_compile_internal_free_return;
+
+#ifdef RE_ENABLE_I18N
+  /* If possible, do searching in single byte encoding to speed things up.  */
+  if (dfa->is_utf8 && !(syntax & RE_ICASE) && preg->translate == NULL)
+    optimize_utf8 (dfa);
+#endif
+
+  /* Then create the initial state of the dfa.  */
+  err = create_initial_state (dfa);
+
+  /* Release work areas.  */
+  free_workarea_compile (preg);
+  re_string_destruct (&regexp);
+
+  if (BE (err != REG_NOERROR, 0))
+    {
+      free_dfa_content (dfa);
+      preg->buffer = NULL;
+      preg->allocated = 0;
+    }
+
+  return err;
+}
+
+/* Initialize DFA.  We use the length of the regular expression PAT_LEN
+   as the initial length of some arrays.  */
+
+static reg_errcode_t
+init_dfa (re_dfa_t *dfa, size_t pat_len)
+{
+  unsigned int table_size;
+#ifndef _LIBC
+  char *codeset_name;
+#endif
+
+  memset (dfa, '\0', sizeof (re_dfa_t));
+
+  /* Force allocation of str_tree_storage the first time.  */
+  dfa->str_tree_storage_idx = BIN_TREE_STORAGE_SIZE;
+
+  /* Avoid overflows.  */
+  if (pat_len == SIZE_MAX)
+    return REG_ESPACE;
+
+  dfa->nodes_alloc = pat_len + 1;
+  dfa->nodes = re_malloc (re_token_t, dfa->nodes_alloc);
+
+  /*  table_size = 2 ^ ceil(log pat_len) */
+  for (table_size = 1; ; table_size <<= 1)
+    if (table_size > pat_len)
+      break;
+
+  dfa->state_table = calloc (sizeof (struct re_state_table_entry), table_size);
+  dfa->state_hash_mask = table_size - 1;
+
+  dfa->mb_cur_max = MB_CUR_MAX;
+#ifdef _LIBC
+  if (dfa->mb_cur_max == 6
+      && strcmp (_NL_CURRENT (LC_CTYPE, _NL_CTYPE_CODESET_NAME), "UTF-8") == 0)
+    dfa->is_utf8 = 1;
+  dfa->map_notascii = (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MAP_TO_NONASCII)
+		       != 0);
+#else
+# ifdef KBUILD_OS_WINDOWS
+  (void)codeset_name;
+  if (get_crt_codepage() == MY_CP_UTF8)
+# else
+#  ifdef HAVE_LANGINFO_CODESET
+  codeset_name = nl_langinfo (CODESET);
+#  else
+  codeset_name = getenv ("LC_ALL");
+  if (codeset_name == NULL || codeset_name[0] == '\0')
+    codeset_name = getenv ("LC_CTYPE");
+  if (codeset_name == NULL || codeset_name[0] == '\0')
+    codeset_name = getenv ("LANG");
+  if (codeset_name == NULL)
+    codeset_name = "";
+  else if (strchr (codeset_name, '.') !=  NULL)
+    codeset_name = strchr (codeset_name, '.') + 1;
+#  endif
+
+  if (strcasecmp (codeset_name, "UTF-8") == 0
+      || strcasecmp (codeset_name, "UTF8") == 0)
+# endif
+    dfa->is_utf8 = 1;
+
+  /* We check exhaustively in the loop below if this charset is a
+     superset of ASCII.  */
+  dfa->map_notascii = 0;
+#endif
+
+#ifdef RE_ENABLE_I18N
+  if (dfa->mb_cur_max > 1)
+    {
+      if (dfa->is_utf8)
+	dfa->sb_char = (re_bitset_ptr_t) utf8_sb_map;
+      else
+	{
+	  int i, j, ch;
+
+	  dfa->sb_char = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 1);
+	  if (BE (dfa->sb_char == NULL, 0))
+	    return REG_ESPACE;
+
+	  /* Set the bits corresponding to single byte chars.  */
+	  for (i = 0, ch = 0; i < BITSET_WORDS; ++i)
+	    for (j = 0; j < BITSET_WORD_BITS; ++j, ++ch)
+	      {
+		wint_t wch = __btowc (ch);
+		if (wch != WEOF)
+		  dfa->sb_char[i] |= (bitset_word_t) 1 << j;
+# ifndef _LIBC
+		if (isascii (ch) && wch != ch)
+		  dfa->map_notascii = 1;
+# endif
+	      }
+	}
+    }
+#endif
+
+  if (BE (dfa->nodes == NULL || dfa->state_table == NULL, 0))
+    return REG_ESPACE;
+  return REG_NOERROR;
+}
+
+/* Initialize WORD_CHAR table, which indicate which character is
+   "word".  In this case "word" means that it is the word construction
+   character used by some operators like "\<", "\>", etc.  */
+
+static void
+internal_function
+init_word_char (re_dfa_t *dfa)
+{
+  int i, j, ch;
+  dfa->word_ops_used = 1;
+  for (i = 0, ch = 0; i < BITSET_WORDS; ++i)
+    for (j = 0; j < BITSET_WORD_BITS; ++j, ++ch)
+      if (isalnum (ch) || ch == '_')
+	dfa->word_char[i] |= (bitset_word_t) 1 << j;
+}
+
+/* Free the work area which are only used while compiling.  */
+
+static void
+free_workarea_compile (regex_t *preg)
+{
+  re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+  bin_tree_storage_t *storage, *next;
+  for (storage = dfa->str_tree_storage; storage; storage = next)
+    {
+      next = storage->next;
+      re_free (storage);
+    }
+  dfa->str_tree_storage = NULL;
+  dfa->str_tree_storage_idx = BIN_TREE_STORAGE_SIZE;
+  dfa->str_tree = NULL;
+  re_free (dfa->org_indices);
+  dfa->org_indices = NULL;
+}
+
+/* Create initial states for all contexts.  */
+
+static reg_errcode_t
+create_initial_state (re_dfa_t *dfa)
+{
+  int first, i;
+  reg_errcode_t err;
+  re_node_set init_nodes;
+
+  /* Initial states have the epsilon closure of the node which is
+     the first node of the regular expression.  */
+  first = dfa->str_tree->first->node_idx;
+  dfa->init_node = first;
+  err = re_node_set_init_copy (&init_nodes, dfa->eclosures + first);
+  if (BE (err != REG_NOERROR, 0))
+    return err;
+
+  /* The back-references which are in initial states can epsilon transit,
+     since in this case all of the subexpressions can be null.
+     Then we add epsilon closures of the nodes which are the next nodes of
+     the back-references.  */
+  if (dfa->nbackref > 0)
+    for (i = 0; i < init_nodes.nelem; ++i)
+      {
+	int node_idx = init_nodes.elems[i];
+	re_token_type_t type = dfa->nodes[node_idx].type;
+
+	int clexp_idx;
+	if (type != OP_BACK_REF)
+	  continue;
+	for (clexp_idx = 0; clexp_idx < init_nodes.nelem; ++clexp_idx)
+	  {
+	    re_token_t *clexp_node;
+	    clexp_node = dfa->nodes + init_nodes.elems[clexp_idx];
+	    if (clexp_node->type == OP_CLOSE_SUBEXP
+		&& clexp_node->opr.idx == dfa->nodes[node_idx].opr.idx)
+	      break;
+	  }
+	if (clexp_idx == init_nodes.nelem)
+	  continue;
+
+	if (type == OP_BACK_REF)
+	  {
+	    int dest_idx = dfa->edests[node_idx].elems[0];
+	    if (!re_node_set_contains (&init_nodes, dest_idx))
+	      {
+		re_node_set_merge (&init_nodes, dfa->eclosures + dest_idx);
+		i = 0;
+	      }
+	  }
+      }
+
+  /* It must be the first time to invoke acquire_state.  */
+  dfa->init_state = re_acquire_state_context (&err, dfa, &init_nodes, 0);
+  /* We don't check ERR here, since the initial state must not be NULL.  */
+  if (BE (dfa->init_state == NULL, 0))
+    return err;
+  if (dfa->init_state->has_constraint)
+    {
+      dfa->init_state_word = re_acquire_state_context (&err, dfa, &init_nodes,
+						       CONTEXT_WORD);
+      dfa->init_state_nl = re_acquire_state_context (&err, dfa, &init_nodes,
+						     CONTEXT_NEWLINE);
+      dfa->init_state_begbuf = re_acquire_state_context (&err, dfa,
+							 &init_nodes,
+							 CONTEXT_NEWLINE
+							 | CONTEXT_BEGBUF);
+      if (BE (dfa->init_state_word == NULL || dfa->init_state_nl == NULL
+	      || dfa->init_state_begbuf == NULL, 0))
+	return err;
+    }
+  else
+    dfa->init_state_word = dfa->init_state_nl
+      = dfa->init_state_begbuf = dfa->init_state;
+
+  re_node_set_free (&init_nodes);
+  return REG_NOERROR;
+}
+
+#ifdef RE_ENABLE_I18N
+/* If it is possible to do searching in single byte encoding instead of UTF-8
+   to speed things up, set dfa->mb_cur_max to 1, clear is_utf8 and change
+   DFA nodes where needed.  */
+
+static void
+optimize_utf8 (re_dfa_t *dfa)
+{
+  int node, i, mb_chars = 0, has_period = 0;
+
+  for (node = 0; node < dfa->nodes_len; ++node)
+    switch (dfa->nodes[node].type)
+      {
+      case CHARACTER:
+	if (dfa->nodes[node].opr.c >= 0x80)
+	  mb_chars = 1;
+	break;
+      case ANCHOR:
+	switch (dfa->nodes[node].opr.idx)
+	  {
+	  case LINE_FIRST:
+	  case LINE_LAST:
+	  case BUF_FIRST:
+	  case BUF_LAST:
+	    break;
+	  default:
+	    /* Word anchors etc. cannot be handled.  */
+	    return;
+	  }
+	break;
+      case OP_PERIOD:
+        has_period = 1;
+        break;
+      case OP_BACK_REF:
+      case OP_ALT:
+      case END_OF_RE:
+      case OP_DUP_ASTERISK:
+      case OP_OPEN_SUBEXP:
+      case OP_CLOSE_SUBEXP:
+	break;
+      case COMPLEX_BRACKET:
+	return;
+      case SIMPLE_BRACKET:
+	/* Just double check.  The non-ASCII range starts at 0x80.  */
+	assert (0x80 % BITSET_WORD_BITS == 0);
+        for (i = 0x80 / BITSET_WORD_BITS; i < BITSET_WORDS; ++i)
+	  if (dfa->nodes[node].opr.sbcset[i])
+	    return;
+	break;
+      default:
+	abort ();
+      }
+
+  if (mb_chars || has_period)
+    for (node = 0; node < dfa->nodes_len; ++node)
+      {
+	if (dfa->nodes[node].type == CHARACTER
+	    && dfa->nodes[node].opr.c >= 0x80)
+	  dfa->nodes[node].mb_partial = 0;
+	else if (dfa->nodes[node].type == OP_PERIOD)
+	  dfa->nodes[node].type = OP_UTF8_PERIOD;
+      }
+
+  /* The search can be in single byte locale.  */
+  dfa->mb_cur_max = 1;
+  dfa->is_utf8 = 0;
+  dfa->has_mb_node = dfa->nbackref > 0 || has_period;
+}
+#endif
+
+/* Analyze the structure tree, and calculate "first", "next", "edest",
+   "eclosure", and "inveclosure".  */
+
+static reg_errcode_t
+analyze (regex_t *preg)
+{
+  re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+  reg_errcode_t ret;
+
+  /* Allocate arrays.  */
+  dfa->nexts = re_malloc (int, dfa->nodes_alloc);
+  dfa->org_indices = re_malloc (int, dfa->nodes_alloc);
+  dfa->edests = re_malloc (re_node_set, dfa->nodes_alloc);
+  dfa->eclosures = re_malloc (re_node_set, dfa->nodes_alloc);
+  if (BE (dfa->nexts == NULL || dfa->org_indices == NULL || dfa->edests == NULL
+	  || dfa->eclosures == NULL, 0))
+    return REG_ESPACE;
+
+  dfa->subexp_map = re_malloc (int, preg->re_nsub);
+  if (dfa->subexp_map != NULL)
+    {
+      int i;
+      for (i = 0; i < preg->re_nsub; i++)
+	dfa->subexp_map[i] = i;
+      preorder (dfa->str_tree, optimize_subexps, dfa);
+      for (i = 0; i < preg->re_nsub; i++)
+	if (dfa->subexp_map[i] != i)
+	  break;
+      if (i == preg->re_nsub)
+	{
+	  free (dfa->subexp_map);
+	  dfa->subexp_map = NULL;
+	}
+    }
+
+  ret = postorder (dfa->str_tree, lower_subexps, preg);
+  if (BE (ret != REG_NOERROR, 0))
+    return ret;
+  ret = postorder (dfa->str_tree, calc_first, dfa);
+  if (BE (ret != REG_NOERROR, 0))
+    return ret;
+  preorder (dfa->str_tree, calc_next, dfa);
+  ret = preorder (dfa->str_tree, link_nfa_nodes, dfa);
+  if (BE (ret != REG_NOERROR, 0))
+    return ret;
+  ret = calc_eclosure (dfa);
+  if (BE (ret != REG_NOERROR, 0))
+    return ret;
+
+  /* We only need this during the prune_impossible_nodes pass in regexec.c;
+     skip it if p_i_n will not run, as calc_inveclosure can be quadratic.  */
+  if ((!preg->no_sub && preg->re_nsub > 0 && dfa->has_plural_match)
+      || dfa->nbackref)
+    {
+      dfa->inveclosures = re_malloc (re_node_set, dfa->nodes_len);
+      if (BE (dfa->inveclosures == NULL, 0))
+        return REG_ESPACE;
+      ret = calc_inveclosure (dfa);
+    }
+
+  return ret;
+}
+
+/* Our parse trees are very unbalanced, so we cannot use a stack to
+   implement parse tree visits.  Instead, we use parent pointers and
+   some hairy code in these two functions.  */
+static reg_errcode_t
+postorder (bin_tree_t *root, reg_errcode_t (fn (void *, bin_tree_t *)),
+	   void *extra)
+{
+  bin_tree_t *node, *prev;
+
+  for (node = root; ; )
+    {
+      /* Descend down the tree, preferably to the left (or to the right
+	 if that's the only child).  */
+      while (node->left || node->right)
+	if (node->left)
+          node = node->left;
+        else
+          node = node->right;
+
+      do
+	{
+	  reg_errcode_t err = fn (extra, node);
+	  if (BE (err != REG_NOERROR, 0))
+	    return err;
+          if (node->parent == NULL)
+	    return REG_NOERROR;
+	  prev = node;
+	  node = node->parent;
+	}
+      /* Go up while we have a node that is reached from the right.  */
+      while (node->right == prev || node->right == NULL);
+      node = node->right;
+    }
+}
+
+static reg_errcode_t
+preorder (bin_tree_t *root, reg_errcode_t (fn (void *, bin_tree_t *)),
+	  void *extra)
+{
+  bin_tree_t *node;
+
+  for (node = root; ; )
+    {
+      reg_errcode_t err = fn (extra, node);
+      if (BE (err != REG_NOERROR, 0))
+	return err;
+
+      /* Go to the left node, or up and to the right.  */
+      if (node->left)
+	node = node->left;
+      else
+	{
+	  bin_tree_t *prev = NULL;
+	  while (node->right == prev || node->right == NULL)
+	    {
+	      prev = node;
+	      node = node->parent;
+	      if (!node)
+	        return REG_NOERROR;
+	    }
+	  node = node->right;
+	}
+    }
+}
+
+/* Optimization pass: if a SUBEXP is entirely contained, strip it and tell
+   re_search_internal to map the inner one's opr.idx to this one's.  Adjust
+   backreferences as well.  Requires a preorder visit.  */
+static reg_errcode_t
+optimize_subexps (void *extra, bin_tree_t *node)
+{
+  re_dfa_t *dfa = (re_dfa_t *) extra;
+
+  if (node->token.type == OP_BACK_REF && dfa->subexp_map)
+    {
+      int idx = node->token.opr.idx;
+      node->token.opr.idx = dfa->subexp_map[idx];
+      dfa->used_bkref_map |= 1 << node->token.opr.idx;
+    }
+
+  else if (node->token.type == SUBEXP
+           && node->left && node->left->token.type == SUBEXP)
+    {
+      int other_idx = node->left->token.opr.idx;
+
+      node->left = node->left->left;
+      if (node->left)
+        node->left->parent = node;
+
+      dfa->subexp_map[other_idx] = dfa->subexp_map[node->token.opr.idx];
+      if (other_idx < BITSET_WORD_BITS)
+	  dfa->used_bkref_map &= ~((bitset_word_t) 1 << other_idx);
+    }
+
+  return REG_NOERROR;
+}
+
+/* Lowering pass: Turn each SUBEXP node into the appropriate concatenation
+   of OP_OPEN_SUBEXP, the body of the SUBEXP (if any) and OP_CLOSE_SUBEXP.  */
+static reg_errcode_t
+lower_subexps (void *extra, bin_tree_t *node)
+{
+  regex_t *preg = (regex_t *) extra;
+  reg_errcode_t err = REG_NOERROR;
+
+  if (node->left && node->left->token.type == SUBEXP)
+    {
+      node->left = lower_subexp (&err, preg, node->left);
+      if (node->left)
+	node->left->parent = node;
+    }
+  if (node->right && node->right->token.type == SUBEXP)
+    {
+      node->right = lower_subexp (&err, preg, node->right);
+      if (node->right)
+	node->right->parent = node;
+    }
+
+  return err;
+}
+
+static bin_tree_t *
+lower_subexp (reg_errcode_t *err, regex_t *preg, bin_tree_t *node)
+{
+  re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+  bin_tree_t *body = node->left;
+  bin_tree_t *op, *cls, *tree1, *tree;
+
+  if (preg->no_sub
+      /* We do not optimize empty subexpressions, because otherwise we may
+	 have bad CONCAT nodes with NULL children.  This is obviously not
+	 very common, so we do not lose much.  An example that triggers
+	 this case is the sed "script" /\(\)/x.  */
+      && node->left != NULL
+      && (node->token.opr.idx >= BITSET_WORD_BITS
+	  || !(dfa->used_bkref_map
+	       & ((bitset_word_t) 1 << node->token.opr.idx))))
+    return node->left;
+
+  /* Convert the SUBEXP node to the concatenation of an
+     OP_OPEN_SUBEXP, the contents, and an OP_CLOSE_SUBEXP.  */
+  op = create_tree (dfa, NULL, NULL, OP_OPEN_SUBEXP);
+  cls = create_tree (dfa, NULL, NULL, OP_CLOSE_SUBEXP);
+  tree1 = body ? create_tree (dfa, body, cls, CONCAT) : cls;
+  tree = create_tree (dfa, op, tree1, CONCAT);
+  if (BE (tree == NULL || tree1 == NULL || op == NULL || cls == NULL, 0))
+    {
+      *err = REG_ESPACE;
+      return NULL;
+    }
+
+  op->token.opr.idx = cls->token.opr.idx = node->token.opr.idx;
+  op->token.opt_subexp = cls->token.opt_subexp = node->token.opt_subexp;
+  return tree;
+}
+
+/* Pass 1 in building the NFA: compute FIRST and create unlinked automaton
+   nodes.  Requires a postorder visit.  */
+static reg_errcode_t
+calc_first (void *extra, bin_tree_t *node)
+{
+  re_dfa_t *dfa = (re_dfa_t *) extra;
+  if (node->token.type == CONCAT)
+    {
+      node->first = node->left->first;
+      node->node_idx = node->left->node_idx;
+    }
+  else
+    {
+      node->first = node;
+      node->node_idx = re_dfa_add_node (dfa, node->token);
+      if (BE (node->node_idx == -1, 0))
+        return REG_ESPACE;
+    }
+  return REG_NOERROR;
+}
+
+/* Pass 2: compute NEXT on the tree.  Preorder visit.  */
+static reg_errcode_t
+calc_next (void *extra, bin_tree_t *node)
+{
+  switch (node->token.type)
+    {
+    case OP_DUP_ASTERISK:
+      node->left->next = node;
+      break;
+    case CONCAT:
+      node->left->next = node->right->first;
+      node->right->next = node->next;
+      break;
+    default:
+      if (node->left)
+	node->left->next = node->next;
+      if (node->right)
+        node->right->next = node->next;
+      break;
+    }
+  return REG_NOERROR;
+}
+
+/* Pass 3: link all DFA nodes to their NEXT node (any order will do).  */
+static reg_errcode_t
+link_nfa_nodes (void *extra, bin_tree_t *node)
+{
+  re_dfa_t *dfa = (re_dfa_t *) extra;
+  int idx = node->node_idx;
+  reg_errcode_t err = REG_NOERROR;
+
+  switch (node->token.type)
+    {
+    case CONCAT:
+      break;
+
+    case END_OF_RE:
+      assert (node->next == NULL);
+      break;
+
+    case OP_DUP_ASTERISK:
+    case OP_ALT:
+      {
+	int left, right;
+	dfa->has_plural_match = 1;
+	if (node->left != NULL)
+	  left = node->left->first->node_idx;
+	else
+	  left = node->next->node_idx;
+	if (node->right != NULL)
+	  right = node->right->first->node_idx;
+	else
+	  right = node->next->node_idx;
+	assert (left > -1);
+	assert (right > -1);
+	err = re_node_set_init_2 (dfa->edests + idx, left, right);
+      }
+      break;
+
+    case ANCHOR:
+    case OP_OPEN_SUBEXP:
+    case OP_CLOSE_SUBEXP:
+      err = re_node_set_init_1 (dfa->edests + idx, node->next->node_idx);
+      break;
+
+    case OP_BACK_REF:
+      dfa->nexts[idx] = node->next->node_idx;
+      if (node->token.type == OP_BACK_REF)
+	re_node_set_init_1 (dfa->edests + idx, dfa->nexts[idx]);
+      break;
+
+    default:
+      assert (!IS_EPSILON_NODE (node->token.type));
+      dfa->nexts[idx] = node->next->node_idx;
+      break;
+    }
+
+  return err;
+}
+
+/* Duplicate the epsilon closure of the node ROOT_NODE.
+   Note that duplicated nodes have constraint INIT_CONSTRAINT in addition
+   to their own constraint.  */
+
+static reg_errcode_t
+internal_function
+duplicate_node_closure (re_dfa_t *dfa, int top_org_node, int top_clone_node,
+			int root_node, unsigned int init_constraint)
+{
+  int org_node, clone_node, ret;
+  unsigned int constraint = init_constraint;
+  for (org_node = top_org_node, clone_node = top_clone_node;;)
+    {
+      int org_dest, clone_dest;
+      if (dfa->nodes[org_node].type == OP_BACK_REF)
+	{
+	  /* If the back reference epsilon-transit, its destination must
+	     also have the constraint.  Then duplicate the epsilon closure
+	     of the destination of the back reference, and store it in
+	     edests of the back reference.  */
+	  org_dest = dfa->nexts[org_node];
+	  re_node_set_empty (dfa->edests + clone_node);
+	  clone_dest = duplicate_node (dfa, org_dest, constraint);
+	  if (BE (clone_dest == -1, 0))
+	    return REG_ESPACE;
+	  dfa->nexts[clone_node] = dfa->nexts[org_node];
+	  ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+	  if (BE (ret < 0, 0))
+	    return REG_ESPACE;
+	}
+      else if (dfa->edests[org_node].nelem == 0)
+	{
+	  /* In case of the node can't epsilon-transit, don't duplicate the
+	     destination and store the original destination as the
+	     destination of the node.  */
+	  dfa->nexts[clone_node] = dfa->nexts[org_node];
+	  break;
+	}
+      else if (dfa->edests[org_node].nelem == 1)
+	{
+	  /* In case of the node can epsilon-transit, and it has only one
+	     destination.  */
+	  org_dest = dfa->edests[org_node].elems[0];
+	  re_node_set_empty (dfa->edests + clone_node);
+	  if (dfa->nodes[org_node].type == ANCHOR)
+	    {
+	      /* In case of the node has another constraint, append it.  */
+	      if (org_node == root_node && clone_node != org_node)
+		{
+		  /* ...but if the node is root_node itself, it means the
+		     epsilon closure have a loop, then tie it to the
+		     destination of the root_node.  */
+		  ret = re_node_set_insert (dfa->edests + clone_node,
+					    org_dest);
+		  if (BE (ret < 0, 0))
+		    return REG_ESPACE;
+		  break;
+		}
+	      constraint |= dfa->nodes[org_node].opr.ctx_type;
+	    }
+	  clone_dest = duplicate_node (dfa, org_dest, constraint);
+	  if (BE (clone_dest == -1, 0))
+	    return REG_ESPACE;
+	  ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+	  if (BE (ret < 0, 0))
+	    return REG_ESPACE;
+	}
+      else /* dfa->edests[org_node].nelem == 2 */
+	{
+	  /* In case of the node can epsilon-transit, and it has two
+	     destinations. In the bin_tree_t and DFA, that's '|' and '*'.   */
+	  org_dest = dfa->edests[org_node].elems[0];
+	  re_node_set_empty (dfa->edests + clone_node);
+	  /* Search for a duplicated node which satisfies the constraint.  */
+	  clone_dest = search_duplicated_node (dfa, org_dest, constraint);
+	  if (clone_dest == -1)
+	    {
+	      /* There are no such a duplicated node, create a new one.  */
+	      reg_errcode_t err;
+	      clone_dest = duplicate_node (dfa, org_dest, constraint);
+	      if (BE (clone_dest == -1, 0))
+		return REG_ESPACE;
+	      ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+	      if (BE (ret < 0, 0))
+		return REG_ESPACE;
+	      err = duplicate_node_closure (dfa, org_dest, clone_dest,
+					    root_node, constraint);
+	      if (BE (err != REG_NOERROR, 0))
+		return err;
+	    }
+	  else
+	    {
+	      /* There are a duplicated node which satisfy the constraint,
+		 use it to avoid infinite loop.  */
+	      ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+	      if (BE (ret < 0, 0))
+		return REG_ESPACE;
+	    }
+
+	  org_dest = dfa->edests[org_node].elems[1];
+	  clone_dest = duplicate_node (dfa, org_dest, constraint);
+	  if (BE (clone_dest == -1, 0))
+	    return REG_ESPACE;
+	  ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+	  if (BE (ret < 0, 0))
+	    return REG_ESPACE;
+	}
+      org_node = org_dest;
+      clone_node = clone_dest;
+    }
+  return REG_NOERROR;
+}
+
+/* Search for a node which is duplicated from the node ORG_NODE, and
+   satisfies the constraint CONSTRAINT.  */
+
+static int
+search_duplicated_node (const re_dfa_t *dfa, int org_node,
+			unsigned int constraint)
+{
+  int idx;
+  for (idx = dfa->nodes_len - 1; dfa->nodes[idx].duplicated && idx > 0; --idx)
+    {
+      if (org_node == dfa->org_indices[idx]
+	  && constraint == dfa->nodes[idx].constraint)
+	return idx; /* Found.  */
+    }
+  return -1; /* Not found.  */
+}
+
+/* Duplicate the node whose index is ORG_IDX and set the constraint CONSTRAINT.
+   Return the index of the new node, or -1 if insufficient storage is
+   available.  */
+
+static int
+duplicate_node (re_dfa_t *dfa, int org_idx, unsigned int constraint)
+{
+  int dup_idx = re_dfa_add_node (dfa, dfa->nodes[org_idx]);
+  if (BE (dup_idx != -1, 1))
+    {
+      dfa->nodes[dup_idx].constraint = constraint;
+      if (dfa->nodes[org_idx].type == ANCHOR)
+	dfa->nodes[dup_idx].constraint |= dfa->nodes[org_idx].opr.ctx_type;
+      dfa->nodes[dup_idx].duplicated = 1;
+
+      /* Store the index of the original node.  */
+      dfa->org_indices[dup_idx] = org_idx;
+    }
+  return dup_idx;
+}
+
+static reg_errcode_t
+calc_inveclosure (re_dfa_t *dfa)
+{
+  int src, idx, ret;
+  for (idx = 0; idx < dfa->nodes_len; ++idx)
+    re_node_set_init_empty (dfa->inveclosures + idx);
+
+  for (src = 0; src < dfa->nodes_len; ++src)
+    {
+      int *elems = dfa->eclosures[src].elems;
+      for (idx = 0; idx < dfa->eclosures[src].nelem; ++idx)
+	{
+	  ret = re_node_set_insert_last (dfa->inveclosures + elems[idx], src);
+	  if (BE (ret == -1, 0))
+	    return REG_ESPACE;
+	}
+    }
+
+  return REG_NOERROR;
+}
+
+/* Calculate "eclosure" for all the node in DFA.  */
+
+static reg_errcode_t
+calc_eclosure (re_dfa_t *dfa)
+{
+  int node_idx, incomplete;
+#ifdef DEBUG
+  assert (dfa->nodes_len > 0);
+#endif
+  incomplete = 0;
+  /* For each nodes, calculate epsilon closure.  */
+  for (node_idx = 0; ; ++node_idx)
+    {
+      reg_errcode_t err;
+      re_node_set eclosure_elem;
+      if (node_idx == dfa->nodes_len)
+	{
+	  if (!incomplete)
+	    break;
+	  incomplete = 0;
+	  node_idx = 0;
+	}
+
+#ifdef DEBUG
+      assert (dfa->eclosures[node_idx].nelem != -1);
+#endif
+
+      /* If we have already calculated, skip it.  */
+      if (dfa->eclosures[node_idx].nelem != 0)
+	continue;
+      /* Calculate epsilon closure of `node_idx'.  */
+      err = calc_eclosure_iter (&eclosure_elem, dfa, node_idx, 1);
+      if (BE (err != REG_NOERROR, 0))
+	return err;
+
+      if (dfa->eclosures[node_idx].nelem == 0)
+	{
+	  incomplete = 1;
+	  re_node_set_free (&eclosure_elem);
+	}
+    }
+  return REG_NOERROR;
+}
+
+/* Calculate epsilon closure of NODE.  */
+
+static reg_errcode_t
+calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa, int node, int root)
+{
+  reg_errcode_t err;
+  unsigned int constraint;
+  int i, incomplete;
+  re_node_set eclosure;
+  incomplete = 0;
+  err = re_node_set_alloc (&eclosure, dfa->edests[node].nelem + 1);
+  if (BE (err != REG_NOERROR, 0))
+    return err;
+
+  /* This indicates that we are calculating this node now.
+     We reference this value to avoid infinite loop.  */
+  dfa->eclosures[node].nelem = -1;
+
+  constraint = ((dfa->nodes[node].type == ANCHOR)
+		? dfa->nodes[node].opr.ctx_type : 0);
+  /* If the current node has constraints, duplicate all nodes.
+     Since they must inherit the constraints.  */
+  if (constraint
+      && dfa->edests[node].nelem
+      && !dfa->nodes[dfa->edests[node].elems[0]].duplicated)
+    {
+      int org_node, cur_node;
+      org_node = cur_node = node;
+      err = duplicate_node_closure (dfa, node, node, node, constraint);
+      if (BE (err != REG_NOERROR, 0))
+	return err;
+    }
+
+  /* Expand each epsilon destination nodes.  */
+  if (IS_EPSILON_NODE(dfa->nodes[node].type))
+    for (i = 0; i < dfa->edests[node].nelem; ++i)
+      {
+	re_node_set eclosure_elem;
+	int edest = dfa->edests[node].elems[i];
+	/* If calculating the epsilon closure of `edest' is in progress,
+	   return intermediate result.  */
+	if (dfa->eclosures[edest].nelem == -1)
+	  {
+	    incomplete = 1;
+	    continue;
+	  }
+	/* If we haven't calculated the epsilon closure of `edest' yet,
+	   calculate now. Otherwise use calculated epsilon closure.  */
+	if (dfa->eclosures[edest].nelem == 0)
+	  {
+	    err = calc_eclosure_iter (&eclosure_elem, dfa, edest, 0);
+	    if (BE (err != REG_NOERROR, 0))
+	      return err;
+	  }
+	else
+	  eclosure_elem = dfa->eclosures[edest];
+	/* Merge the epsilon closure of `edest'.  */
+	re_node_set_merge (&eclosure, &eclosure_elem);
+	/* If the epsilon closure of `edest' is incomplete,
+	   the epsilon closure of this node is also incomplete.  */
+	if (dfa->eclosures[edest].nelem == 0)
+	  {
+	    incomplete = 1;
+	    re_node_set_free (&eclosure_elem);
+	  }
+      }
+
+  /* Epsilon closures include itself.  */
+  re_node_set_insert (&eclosure, node);
+  if (incomplete && !root)
+    dfa->eclosures[node].nelem = 0;
+  else
+    dfa->eclosures[node] = eclosure;
+  *new_set = eclosure;
+  return REG_NOERROR;
+}
+
+/* Functions for token which are used in the parser.  */
+
+/* Fetch a token from INPUT.
+   We must not use this function inside bracket expressions.  */
+
+static void
+internal_function
+fetch_token (re_token_t *result, re_string_t *input, reg_syntax_t syntax)
+{
+  re_string_skip_bytes (input, peek_token (result, input, syntax));
+}
+
+/* Peek a token from INPUT, and return the length of the token.
+   We must not use this function inside bracket expressions.  */
+
+static int
+internal_function
+peek_token (re_token_t *token, re_string_t *input, reg_syntax_t syntax)
+{
+  unsigned char c;
+
+  if (re_string_eoi (input))
+    {
+      token->type = END_OF_RE;
+      return 0;
+    }
+
+  c = re_string_peek_byte (input, 0);
+  token->opr.c = c;
+
+  token->word_char = 0;
+#ifdef RE_ENABLE_I18N
+  token->mb_partial = 0;
+  if (input->mb_cur_max > 1 &&
+      !re_string_first_byte (input, re_string_cur_idx (input)))
+    {
+      token->type = CHARACTER;
+      token->mb_partial = 1;
+      return 1;
+    }
+#endif
+  if (c == '\\')
+    {
+      unsigned char c2;
+      if (re_string_cur_idx (input) + 1 >= re_string_length (input))
+	{
+	  token->type = BACK_SLASH;
+	  return 1;
+	}
+
+      c2 = re_string_peek_byte_case (input, 1);
+      token->opr.c = c2;
+      token->type = CHARACTER;
+#ifdef RE_ENABLE_I18N
+      if (input->mb_cur_max > 1)
+	{
+	  wint_t wc = re_string_wchar_at (input,
+					  re_string_cur_idx (input) + 1);
+	  token->word_char = IS_WIDE_WORD_CHAR (wc) != 0;
+	}
+      else
+#endif
+	token->word_char = IS_WORD_CHAR (c2) != 0;
+
+      switch (c2)
+	{
+	case '|':
+	  if (!(syntax & RE_LIMITED_OPS) && !(syntax & RE_NO_BK_VBAR))
+	    token->type = OP_ALT;
+	  break;
+	case '1': case '2': case '3': case '4': case '5':
+	case '6': case '7': case '8': case '9':
+	  if (!(syntax & RE_NO_BK_REFS))
+	    {
+	      token->type = OP_BACK_REF;
+	      token->opr.idx = c2 - '1';
+	    }
+	  break;
+	case '<':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    {
+	      token->type = ANCHOR;
+	      token->opr.ctx_type = WORD_FIRST;
+	    }
+	  break;
+	case '>':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    {
+	      token->type = ANCHOR;
+	      token->opr.ctx_type = WORD_LAST;
+	    }
+	  break;
+	case 'b':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    {
+	      token->type = ANCHOR;
+	      token->opr.ctx_type = WORD_DELIM;
+	    }
+	  break;
+	case 'B':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    {
+	      token->type = ANCHOR;
+	      token->opr.ctx_type = NOT_WORD_DELIM;
+	    }
+	  break;
+	case 'w':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    token->type = OP_WORD;
+	  break;
+	case 'W':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    token->type = OP_NOTWORD;
+	  break;
+	case 's':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    token->type = OP_SPACE;
+	  break;
+	case 'S':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    token->type = OP_NOTSPACE;
+	  break;
+	case '`':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    {
+	      token->type = ANCHOR;
+	      token->opr.ctx_type = BUF_FIRST;
+	    }
+	  break;
+	case '\'':
+	  if (!(syntax & RE_NO_GNU_OPS))
+	    {
+	      token->type = ANCHOR;
+	      token->opr.ctx_type = BUF_LAST;
+	    }
+	  break;
+	case '(':
+	  if (!(syntax & RE_NO_BK_PARENS))
+	    token->type = OP_OPEN_SUBEXP;
+	  break;
+	case ')':
+	  if (!(syntax & RE_NO_BK_PARENS))
+	    token->type = OP_CLOSE_SUBEXP;
+	  break;
+	case '+':
+	  if (!(syntax & RE_LIMITED_OPS) && (syntax & RE_BK_PLUS_QM))
+	    token->type = OP_DUP_PLUS;
+	  break;
+	case '?':
+	  if (!(syntax & RE_LIMITED_OPS) && (syntax & RE_BK_PLUS_QM))
+	    token->type = OP_DUP_QUESTION;
+	  break;
+	case '{':
+	  if ((syntax & RE_INTERVALS) && (!(syntax & RE_NO_BK_BRACES)))
+	    token->type = OP_OPEN_DUP_NUM;
+	  break;
+	case '}':
+	  if ((syntax & RE_INTERVALS) && (!(syntax & RE_NO_BK_BRACES)))
+	    token->type = OP_CLOSE_DUP_NUM;
+	  break;
+	default:
+	  break;
+	}
+      return 2;
+    }
+
+  token->type = CHARACTER;
+#ifdef RE_ENABLE_I18N
+  if (input->mb_cur_max > 1)
+    {
+      wint_t wc = re_string_wchar_at (input, re_string_cur_idx (input));
+      token->word_char = IS_WIDE_WORD_CHAR (wc) != 0;
+    }
+  else
+#endif
+    token->word_char = IS_WORD_CHAR (token->opr.c);
+
+  switch (c)
+    {
+    case '\n':
+      if (syntax & RE_NEWLINE_ALT)
+	token->type = OP_ALT;
+      break;
+    case '|':
+      if (!(syntax & RE_LIMITED_OPS) && (syntax & RE_NO_BK_VBAR))
+	token->type = OP_ALT;
+      break;
+    case '*':
+      token->type = OP_DUP_ASTERISK;
+      break;
+    case '+':
+      if (!(syntax & RE_LIMITED_OPS) && !(syntax & RE_BK_PLUS_QM))
+	token->type = OP_DUP_PLUS;
+      break;
+    case '?':
+      if (!(syntax & RE_LIMITED_OPS) && !(syntax & RE_BK_PLUS_QM))
+	token->type = OP_DUP_QUESTION;
+      break;
+    case '{':
+      if ((syntax & RE_INTERVALS) && (syntax & RE_NO_BK_BRACES))
+	token->type = OP_OPEN_DUP_NUM;
+      break;
+    case '}':
+      if ((syntax & RE_INTERVALS) && (syntax & RE_NO_BK_BRACES))
+	token->type = OP_CLOSE_DUP_NUM;
+      break;
+    case '(':
+      if (syntax & RE_NO_BK_PARENS)
+	token->type = OP_OPEN_SUBEXP;
+      break;
+    case ')':
+      if (syntax & RE_NO_BK_PARENS)
+	token->type = OP_CLOSE_SUBEXP;
+      break;
+    case '[':
+      token->type = OP_OPEN_BRACKET;
+      break;
+    case '.':
+      token->type = OP_PERIOD;
+      break;
+    case '^':
+      if (!(syntax & (RE_CONTEXT_INDEP_ANCHORS | RE_CARET_ANCHORS_HERE)) &&
+	  re_string_cur_idx (input) != 0)
+	{
+	  char prev = re_string_peek_byte (input, -1);
+	  if (!(syntax & RE_NEWLINE_ALT) || prev != '\n')
+	    break;
+	}
+      token->type = ANCHOR;
+      token->opr.ctx_type = LINE_FIRST;
+      break;
+    case '$':
+      if (!(syntax & RE_CONTEXT_INDEP_ANCHORS) &&
+	  re_string_cur_idx (input) + 1 != re_string_length (input))
+	{
+	  re_token_t next;
+	  re_string_skip_bytes (input, 1);
+	  peek_token (&next, input, syntax);
+	  re_string_skip_bytes (input, -1);
+	  if (next.type != OP_ALT && next.type != OP_CLOSE_SUBEXP)
+	    break;
+	}
+      token->type = ANCHOR;
+      token->opr.ctx_type = LINE_LAST;
+      break;
+    default:
+      break;
+    }
+  return 1;
+}
+
+/* Peek a token from INPUT, and return the length of the token.
+   We must not use this function out of bracket expressions.  */
+
+static int
+internal_function
+peek_token_bracket (re_token_t *token, re_string_t *input, reg_syntax_t syntax)
+{
+  unsigned char c;
+  if (re_string_eoi (input))
+    {
+      token->type = END_OF_RE;
+      return 0;
+    }
+  c = re_string_peek_byte (input, 0);
+  token->opr.c = c;
+
+#ifdef RE_ENABLE_I18N
+  if (input->mb_cur_max > 1 &&
+      !re_string_first_byte (input, re_string_cur_idx (input)))
+    {
+      token->type = CHARACTER;
+      return 1;
+    }
+#endif /* RE_ENABLE_I18N */
+
+  if (c == '\\' && (syntax & RE_BACKSLASH_ESCAPE_IN_LISTS)
+      && re_string_cur_idx (input) + 1 < re_string_length (input))
+    {
+      /* In this case, '\' escape a character.  */
+      unsigned char c2;
+      re_string_skip_bytes (input, 1);
+      c2 = re_string_peek_byte (input, 0);
+      token->opr.c = c2;
+      token->type = CHARACTER;
+      return 1;
+    }
+  if (c == '[') /* '[' is a special char in a bracket exps.  */
+    {
+      unsigned char c2;
+      int token_len;
+      if (re_string_cur_idx (input) + 1 < re_string_length (input))
+	c2 = re_string_peek_byte (input, 1);
+      else
+	c2 = 0;
+      token->opr.c = c2;
+      token_len = 2;
+      switch (c2)
+	{
+	case '.':
+	  token->type = OP_OPEN_COLL_ELEM;
+	  break;
+	case '=':
+	  token->type = OP_OPEN_EQUIV_CLASS;
+	  break;
+	case ':':
+	  if (syntax & RE_CHAR_CLASSES)
+	    {
+	      token->type = OP_OPEN_CHAR_CLASS;
+	      break;
+	    }
+	  /* else fall through.  */
+	default:
+	  token->type = CHARACTER;
+	  token->opr.c = c;
+	  token_len = 1;
+	  break;
+	}
+      return token_len;
+    }
+  switch (c)
+    {
+    case '-':
+      token->type = OP_CHARSET_RANGE;
+      break;
+    case ']':
+      token->type = OP_CLOSE_BRACKET;
+      break;
+    case '^':
+      token->type = OP_NON_MATCH_LIST;
+      break;
+    default:
+      token->type = CHARACTER;
+    }
+  return 1;
+}
+
+/* Functions for parser.  */
+
+/* Entry point of the parser.
+   Parse the regular expression REGEXP and return the structure tree.
+   If an error is occured, ERR is set by error code, and return NULL.
+   This function build the following tree, from regular expression <reg_exp>:
+	   CAT
+	   / \
+	  /   \
+   <reg_exp>  EOR
+
+   CAT means concatenation.
+   EOR means end of regular expression.  */
+
+static bin_tree_t *
+parse (re_string_t *regexp, regex_t *preg, reg_syntax_t syntax,
+       reg_errcode_t *err)
+{
+  re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+  bin_tree_t *tree, *eor, *root;
+  re_token_t current_token;
+  dfa->syntax = syntax;
+  fetch_token (&current_token, regexp, syntax | RE_CARET_ANCHORS_HERE);
+  tree = parse_reg_exp (regexp, preg, &current_token, syntax, 0, err);
+  if (BE (*err != REG_NOERROR && tree == NULL, 0))
+    return NULL;
+  eor = create_tree (dfa, NULL, NULL, END_OF_RE);
+  if (tree != NULL)
+    root = create_tree (dfa, tree, eor, CONCAT);
+  else
+    root = eor;
+  if (BE (eor == NULL || root == NULL, 0))
+    {
+      *err = REG_ESPACE;
+      return NULL;
+    }
+  return root;
+}
+
+/* This function build the following tree, from regular expression
+   <branch1>|<branch2>:
+	   ALT
+	   / \
+	  /   \
+   <branch1> <branch2>
+
+   ALT means alternative, which represents the operator `|'.  */
+
+static bin_tree_t *
+parse_reg_exp (re_string_t *regexp, regex_t *preg, re_token_t *token,
+	       reg_syntax_t syntax, int nest, reg_errcode_t *err)
+{
+  re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+  bin_tree_t *tree, *branch = NULL;
+  tree = parse_branch (regexp, preg, token, syntax, nest, err);
+  if (BE (*err != REG_NOERROR && tree == NULL, 0))
+    return NULL;
+
+  while (token->type == OP_ALT)
+    {
+      fetch_token (token, regexp, syntax | RE_CARET_ANCHORS_HERE);
+      if (token->type != OP_ALT && token->type != END_OF_RE
+	  && (nest == 0 || token->type != OP_CLOSE_SUBEXP))
+	{
+	  branch = parse_branch (regexp, preg, token, syntax, nest, err);
+	  if (BE (*err != REG_NOERROR && branch == NULL, 0))
+	    return NULL;
+	}
+      else
+	branch = NULL;
+      tree = create_tree (dfa, tree, branch, OP_ALT);
+      if (BE (tree == NULL, 0))
+	{
+	  *err = REG_ESPACE;
+	  return NULL;
+	}
+    }
+  return tree;
+}
+
+/* This function build the following tree, from regular expression
+   <exp1><exp2>:
+	CAT
+	/ \
+       /   \
+   <exp1> <exp2>
+
+   CAT means concatenation.  */
+
+static bin_tree_t *
+parse_branch (re_string_t *regexp, regex_t *preg, re_token_t *token,
+	      reg_syntax_t syntax, int nest, reg_errcode_t *err)
+{
+  bin_tree_t *tree, *exp;
+  re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+  tree = parse_expression (regexp, preg, token, syntax, nest, err);
+  if (BE (*err != REG_NOERROR && tree == NULL, 0))
+    return NULL;
+
+  while (token->type != OP_ALT && token->type != END_OF_RE
+	 && (nest == 0 || token->type != OP_CLOSE_SUBEXP))
+    {
+      exp = parse_expression (regexp, preg, token, syntax, nest, err);
+      if (BE (*err != REG_NOERROR && exp == NULL, 0))
+	{
+	  return NULL;
+	}
+      if (tree != NULL && exp != NULL)
+	{
+	  tree = create_tree (dfa, tree, exp, CONCAT);
+	  if (tree == NULL)
+	    {
+	      *err = REG_ESPACE;
+	      return NULL;
+	    }
+	}
+      else if (tree == NULL)
+	tree = exp;
+      /* Otherwise exp == NULL, we don't need to create new tree.  */
+    }
+  return tree;
+}
+
+/* This function build the following tree, from regular expression a*:
+	 *
+	 |
+	 a
+*/
+
+static bin_tree_t *
+parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
+		  reg_syntax_t syntax, int nest, reg_errcode_t *err)
+{
+  re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+  bin_tree_t *tree;
+  switch (token->type)
+    {
+    case CHARACTER:
+      tree = create_token_tree (dfa, NULL, NULL, token);
+      if (BE (tree == NULL, 0))
+	{
+	  *err = REG_ESPACE;
+	  return NULL;
+	}
+#ifdef RE_ENABLE_I18N
+      if (dfa->mb_cur_max > 1)
+	{
+	  while (!re_string_eoi (regexp)
+		 && !re_string_first_byte (regexp, re_string_cur_idx (regexp)))
+	    {
+	      bin_tree_t *mbc_remain;
+	      fetch_token (token, regexp, syntax);
+	      mbc_remain = create_token_tree (dfa, NULL, NULL, token);
+	      tree = create_tree (dfa, tree, mbc_remain, CONCAT);
+	      if (BE (mbc_remain == NULL || tree == NULL, 0))
+		{
+		  *err = REG_ESPACE;
+		  return NULL;
+		}
+	    }
+	}
+#endif
+      break;
+    case OP_OPEN_SUBEXP:
+      tree = parse_sub_exp (regexp, preg, token, syntax, nest + 1, err);
+      if (BE (*err != REG_NOERROR && tree == NULL, 0))
+	return NULL;
+      break;
+    case OP_OPEN_BRACKET:
+      tree = parse_bracket_exp (regexp, dfa, token, syntax, err);
+      if (BE (*err != REG_NOERROR && tree == NULL, 0))
+	return NULL;
+      break;
+    case OP_BACK_REF:
+      if (!BE (dfa->completed_bkref_map & (1 << token->opr.idx), 1))
+	{
+	  *err = REG_ESUBREG;
+	  return NULL;
+	}
+      dfa->used_bkref_map |= 1 << token->opr.idx;
+      tree = create_token_tree (dfa, NULL, NULL, token);
+      if (BE (tree == NULL, 0))
+	{
+	  *err = REG_ESPACE;
+	  return NULL;
+	}
+      ++dfa->nbackref;
+      dfa->has_mb_node = 1;
+      break;
+    case OP_OPEN_DUP_NUM:
+      if (syntax & RE_CONTEXT_INVALID_DUP)
+	{
+	  *err = REG_BADRPT;
+	  return NULL;
+	}
+      /* FALLTHROUGH */
+    case OP_DUP_ASTERISK:
+    case OP_DUP_PLUS:
+    case OP_DUP_QUESTION:
+      if (syntax & RE_CONTEXT_INVALID_OPS)
+	{
+	  *err = REG_BADRPT;
+	  return NULL;
+	}
+      else if (syntax & RE_CONTEXT_INDEP_OPS)
+	{
+	  fetch_token (token, regexp, syntax);
+	  return parse_expression (regexp, preg, token, syntax, nest, err);
+	}
+      /* else fall through  */
+    case OP_CLOSE_SUBEXP:
+      if ((token->type == OP_CLOSE_SUBEXP) &&
+	  !(syntax & RE_UNMATCHED_RIGHT_PAREN_ORD))
+	{
+	  *err = REG_ERPAREN;
+	  return NULL;
+	}
+      /* else fall through  */
+    case OP_CLOSE_DUP_NUM:
+      /* We treat it as a normal character.  */
+
+      /* Then we can these characters as normal characters.  */
+      token->type = CHARACTER;
+      /* mb_partial and word_char bits should be initialized already
+	 by peek_token.  */
+      tree = create_token_tree (dfa, NULL, NULL, token);
+      if (BE (tree == NULL, 0))
+	{
+	  *err = REG_ESPACE;
+	  return NULL;
+	}
+      break;
+    case ANCHOR:
+      if ((token->opr.ctx_type
+	   & (WORD_DELIM | NOT_WORD_DELIM | WORD_FIRST | WORD_LAST))
+	  && dfa->word_ops_used == 0)
+	init_word_char (dfa);
+      if (token->opr.ctx_type == WORD_DELIM
+          || token->opr.ctx_type == NOT_WORD_DELIM)
+	{
+	  bin_tree_t *tree_first, *tree_last;
+	  if (token->opr.ctx_type == WORD_DELIM)
+	    {
+	      token->opr.ctx_type = WORD_FIRST;
+	      tree_first = create_token_tree (dfa, NULL, NULL, token);
+	      token->opr.ctx_type = WORD_LAST;
+            }
+          else
+            {
+	      token->opr.ctx_type = INSIDE_WORD;
+	      tree_first = create_token_tree (dfa, NULL, NULL, token);
+	      token->opr.ctx_type = INSIDE_NOTWORD;
+            }
+	  tree_last = create_token_tree (dfa, NULL, NULL, token);
+	  tree = create_tree (dfa, tree_first, tree_last, OP_ALT);
+	  if (BE (tree_first == NULL || tree_last == NULL || tree == NULL, 0))
+	    {
+	      *err = REG_ESPACE;
+	      return NULL;
+	    }
+	}
+      else
+	{
+	  tree = create_token_tree (dfa, NULL, NULL, token);
+	  if (BE (tree == NULL, 0))
+	    {
+	      *err = REG_ESPACE;
+	      return NULL;
+	    }
+	}
+      /* We must return here, since ANCHORs can't be followed
+	 by repetition operators.
+	 eg. RE"^*" is invalid or "<ANCHOR(^)><CHAR(*)>",
+	     it must not be "<ANCHOR(^)><REPEAT(*)>".  */
+      fetch_token (token, regexp, syntax);
+      return tree;
+    case OP_PERIOD:
+      tree = create_token_tree (dfa, NULL, NULL, token);
+      if (BE (tree == NULL, 0))
+	{
+	  *err = REG_ESPACE;
+	  return NULL;
+	}
+      if (dfa->mb_cur_max > 1)
+	dfa->has_mb_node = 1;
+      break;
+    case OP_WORD:
+    case OP_NOTWORD:
+      tree = build_charclass_op (dfa, regexp->trans,
+				 (const unsigned char *) "alnum",
+				 (const unsigned char *) "_",
+				 token->type == OP_NOTWORD, err);
+      if (BE (*err != REG_NOERROR && tree == NULL, 0))
+	return NULL;
+      break;
+    case OP_SPACE:
+    case OP_NOTSPACE:
+      tree = build_charclass_op (dfa, regexp->trans,
+				 (const unsigned char *) "space",
+				 (const unsigned char *) "",
+				 token->type == OP_NOTSPACE, err);
+      if (BE (*err != REG_NOERROR && tree == NULL, 0))
+	return NULL;
+      break;
+    case OP_ALT:
+    case END_OF_RE:
+      return NULL;
+    case BACK_SLASH:
+      *err = REG_EESCAPE;
+      return NULL;
+    default:
+      /* Must not happen?  */
+#ifdef DEBUG
+      assert (0);
+#endif
+      return NULL;
+    }
+  fetch_token (token, regexp, syntax);
+
+  while (token->type == OP_DUP_ASTERISK || token->type == OP_DUP_PLUS
+	 || token->type == OP_DUP_QUESTION || token->type == OP_OPEN_DUP_NUM)
+    {
+      tree = parse_dup_op (tree, regexp, dfa, token, syntax, err);
+      if (BE (*err != REG_NOERROR && tree == NULL, 0))
+	return NULL;
+      /* In BRE consecutive duplications are not allowed.  */
+      if ((syntax & RE_CONTEXT_INVALID_DUP)
+	  && (token->type == OP_DUP_ASTERISK
+	      || token->type == OP_OPEN_DUP_NUM))
+	{
+	  *err = REG_BADRPT;
+	  return NULL;
+	}
+    }
+
+  return tree;
+}
+
+/* This function build the following tree, from regular expression
+   (<reg_exp>):
+	 SUBEXP
+	    |
+	<reg_exp>
+*/
+
+static bin_tree_t *
+parse_sub_exp (re_string_t *regexp, regex_t *preg, re_token_t *token,
+	       reg_syntax_t syntax, int nest, reg_errcode_t *err)
+{
+  re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+  bin_tree_t *tree;
+  size_t cur_nsub;
+  cur_nsub = preg->re_nsub++;
+
+  fetch_token (token, regexp, syntax | RE_CARET_ANCHORS_HERE);
+
+  /* The subexpression may be a null string.  */
+  if (token->type == OP_CLOSE_SUBEXP)
+    tree = NULL;
+  else
+    {
+      tree = parse_reg_exp (regexp, preg, token, syntax, nest, err);
+      if (BE (*err == REG_NOERROR && token->type != OP_CLOSE_SUBEXP, 0))
+        *err = REG_EPAREN;
+      if (BE (*err != REG_NOERROR, 0))
+	return NULL;
+    }
+
+  if (cur_nsub <= '9' - '1')
+    dfa->completed_bkref_map |= 1 << cur_nsub;
+
+  tree = create_tree (dfa, tree, NULL, SUBEXP);
+  if (BE (tree == NULL, 0))
+    {
+      *err = REG_ESPACE;
+      return NULL;
+    }
+  tree->token.opr.idx = cur_nsub;
+  return tree;
+}
+
+/* This function parse repetition operators like "*", "+", "{1,3}" etc.  */
+
+static bin_tree_t *
+parse_dup_op (bin_tree_t *elem, re_string_t *regexp, re_dfa_t *dfa,
+	      re_token_t *token, reg_syntax_t syntax, reg_errcode_t *err)
+{
+  bin_tree_t *tree = NULL, *old_tree = NULL;
+  int i, start, end, start_idx = re_string_cur_idx (regexp);
+  re_token_t start_token = *token;
+
+  if (token->type == OP_OPEN_DUP_NUM)
+    {
+      end = 0;
+      start = fetch_number (regexp, token, syntax);
+      if (start == -1)
+	{
+	  if (token->type == CHARACTER && token->opr.c == ',')
+	    start = 0; /* We treat "{,m}" as "{0,m}".  */
+	  else
+	    {
+	      *err = REG_BADBR; /* <re>{} is invalid.  */
+	      return NULL;
+	    }
+	}
+      if (BE (start != -2, 1))
+	{
+	  /* We treat "{n}" as "{n,n}".  */
+	  end = ((token->type == OP_CLOSE_DUP_NUM) ? start
+		 : ((token->type == CHARACTER && token->opr.c == ',')
+		    ? fetch_number (regexp, token, syntax) : -2));
+	}
+      if (BE (start == -2 || end == -2, 0))
+	{
+	  /* Invalid sequence.  */
+	  if (BE (!(syntax & RE_INVALID_INTERVAL_ORD), 0))
+	    {
+	      if (token->type == END_OF_RE)
+		*err = REG_EBRACE;
+	      else
+		*err = REG_BADBR;
+
+	      return NULL;
+	    }
+
+	  /* If the syntax bit is set, rollback.  */
+	  re_string_set_index (regexp, start_idx);
+	  *token = start_token;
+	  token->type = CHARACTER;
+	  /* mb_partial and word_char bits should be already initialized by
+	     peek_token.  */
+	  return elem;
+	}
+
+      if (BE (end != -1 && start > end, 0))
+	{
+	  /* First number greater than second.  */
+	  *err = REG_BADBR;
+	  return NULL;
+	}
+    }
+  else
+    {
+      start = (token->type == OP_DUP_PLUS) ? 1 : 0;
+      end = (token->type == OP_DUP_QUESTION) ? 1 : -1;
+    }
+
+  fetch_token (token, regexp, syntax);
+
+  if (BE (elem == NULL, 0))
+    return NULL;
+  if (BE (start == 0 && end == 0, 0))
+    {
+      postorder (elem, free_tree, NULL);
+      return NULL;
+    }
+
+  /* Extract "<re>{n,m}" to "<re><re>...<re><re>{0,<m-n>}".  */
+  if (BE (start > 0, 0))
+    {
+      tree = elem;
+      for (i = 2; i <= start; ++i)
+	{
+	  elem = duplicate_tree (elem, dfa);
+	  tree = create_tree (dfa, tree, elem, CONCAT);
+	  if (BE (elem == NULL || tree == NULL, 0))
+	    goto parse_dup_op_espace;
+	}
+
+      if (start == end)
+	return tree;
+
+      /* Duplicate ELEM before it is marked optional.  */
+      elem = duplicate_tree (elem, dfa);
+      old_tree = tree;
+    }
+  else
+    old_tree = NULL;
+
+  if (elem->token.type == SUBEXP)
+    postorder (elem, mark_opt_subexp, (void *) (long) elem->token.opr.idx);
+
+  tree = create_tree (dfa, elem, NULL, (end == -1 ? OP_DUP_ASTERISK : OP_ALT));
+  if (BE (tree == NULL, 0))
+    goto parse_dup_op_espace;
+
+  /* This loop is actually executed only when end != -1,
+     to rewrite <re>{0,n} as (<re>(<re>...<re>?)?)?...  We have
+     already created the start+1-th copy.  */
+  for (i = start + 2; i <= end; ++i)
+    {
+      elem = duplicate_tree (elem, dfa);
+      tree = create_tree (dfa, tree, elem, CONCAT);
+      if (BE (elem == NULL || tree == NULL, 0))
+        goto parse_dup_op_espace;
+
+      tree = create_tree (dfa, tree, NULL, OP_ALT);
+      if (BE (tree == NULL, 0))
+        goto parse_dup_op_espace;
+    }
+
+  if (old_tree)
+    tree = create_tree (dfa, old_tree, tree, CONCAT);
+
+  return tree;
+
+ parse_dup_op_espace:
+  *err = REG_ESPACE;
+  return NULL;
+}
+
+/* Size of the names for collating symbol/equivalence_class/character_class.
+   I'm not sure, but maybe enough.  */
+#define BRACKET_NAME_BUF_SIZE 32
+
+#ifndef _LIBC
+  /* Local function for parse_bracket_exp only used in case of NOT _LIBC.
+     Build the range expression which starts from START_ELEM, and ends
+     at END_ELEM.  The result are written to MBCSET and SBCSET.
+     RANGE_ALLOC is the allocated size of mbcset->range_starts, and
+     mbcset->range_ends, is a pointer argument sinse we may
+     update it.  */
+
+static reg_errcode_t
+internal_function
+# ifdef RE_ENABLE_I18N
+build_range_exp (bitset_t sbcset, re_charset_t *mbcset, int *range_alloc,
+		 bracket_elem_t *start_elem, bracket_elem_t *end_elem)
+# else /* not RE_ENABLE_I18N */
+build_range_exp (bitset_t sbcset, bracket_elem_t *start_elem,
+		 bracket_elem_t *end_elem)
+# endif /* not RE_ENABLE_I18N */
+{
+  unsigned int start_ch, end_ch;
+  /* Equivalence Classes and Character Classes can't be a range start/end.  */
+  if (BE (start_elem->type == EQUIV_CLASS || start_elem->type == CHAR_CLASS
+	  || end_elem->type == EQUIV_CLASS || end_elem->type == CHAR_CLASS,
+	  0))
+    return REG_ERANGE;
+
+  /* We can handle no multi character collating elements without libc
+     support.  */
+  if (BE ((start_elem->type == COLL_SYM
+	   && strlen ((char *) start_elem->opr.name) > 1)
+	  || (end_elem->type == COLL_SYM
+	      && strlen ((char *) end_elem->opr.name) > 1), 0))
+    return REG_ECOLLATE;
+
+# ifdef RE_ENABLE_I18N
+  {
+    wchar_t wc;
+    wint_t start_wc;
+    wint_t end_wc;
+    wchar_t cmp_buf[6] = {L'\0', L'\0', L'\0', L'\0', L'\0', L'\0'};
+
+    start_ch = ((start_elem->type == SB_CHAR) ? start_elem->opr.ch
+		: ((start_elem->type == COLL_SYM) ? start_elem->opr.name[0]
+		   : 0));
+    end_ch = ((end_elem->type == SB_CHAR) ? end_elem->opr.ch
+	      : ((end_elem->type == COLL_SYM) ? end_elem->opr.name[0]
+		 : 0));
+    start_wc = ((start_elem->type == SB_CHAR || start_elem->type == COLL_SYM)
+		? __btowc (start_ch) : start_elem->opr.wch);
+    end_wc = ((end_elem->type == SB_CHAR || end_elem->type == COLL_SYM)
+	      ? __btowc (end_ch) : end_elem->opr.wch);
+    if (start_wc == WEOF || end_wc == WEOF)
+      return REG_ECOLLATE;
+    cmp_buf[0] = start_wc;
+    cmp_buf[4] = end_wc;
+    if (wcscoll (cmp_buf, cmp_buf + 4) > 0)
+      return REG_ERANGE;
+
+    /* Got valid collation sequence values, add them as a new entry.
+       However, for !_LIBC we have no collation elements: if the
+       character set is single byte, the single byte character set
+       that we build below suffices.  parse_bracket_exp passes
+       no MBCSET if dfa->mb_cur_max == 1.  */
+    if (mbcset)
+      {
+        /* Check the space of the arrays.  */
+        if (BE (*range_alloc == mbcset->nranges, 0))
+          {
+	    /* There is not enough space, need realloc.  */
+	    wchar_t *new_array_start, *new_array_end;
+	    int new_nranges;
+
+	    /* +1 in case of mbcset->nranges is 0.  */
+	    new_nranges = 2 * mbcset->nranges + 1;
+	    /* Use realloc since mbcset->range_starts and mbcset->range_ends
+	       are NULL if *range_alloc == 0.  */
+	    new_array_start = re_realloc (mbcset->range_starts, wchar_t,
+				          new_nranges);
+	    new_array_end = re_realloc (mbcset->range_ends, wchar_t,
+				        new_nranges);
+
+	    if (BE (new_array_start == NULL || new_array_end == NULL, 0))
+	      return REG_ESPACE;
+
+	    mbcset->range_starts = new_array_start;
+	    mbcset->range_ends = new_array_end;
+	    *range_alloc = new_nranges;
+          }
+
+        mbcset->range_starts[mbcset->nranges] = start_wc;
+        mbcset->range_ends[mbcset->nranges++] = end_wc;
+      }
+
+    /* Build the table for single byte characters.  */
+    for (wc = 0; wc < SBC_MAX; ++wc)
+      {
+	cmp_buf[2] = wc;
+	if (wcscoll (cmp_buf, cmp_buf + 2) <= 0
+	    && wcscoll (cmp_buf + 2, cmp_buf + 4) <= 0)
+	  bitset_set (sbcset, wc);
+      }
+  }
+# else /* not RE_ENABLE_I18N */
+  {
+    unsigned int ch;
+    start_ch = ((start_elem->type == SB_CHAR ) ? start_elem->opr.ch
+		: ((start_elem->type == COLL_SYM) ? start_elem->opr.name[0]
+		   : 0));
+    end_ch = ((end_elem->type == SB_CHAR ) ? end_elem->opr.ch
+	      : ((end_elem->type == COLL_SYM) ? end_elem->opr.name[0]
+		 : 0));
+    if (start_ch > end_ch)
+      return REG_ERANGE;
+    /* Build the table for single byte characters.  */
+    for (ch = 0; ch < SBC_MAX; ++ch)
+      if (start_ch <= ch  && ch <= end_ch)
+	bitset_set (sbcset, ch);
+  }
+# endif /* not RE_ENABLE_I18N */
+  return REG_NOERROR;
+}
+#endif /* not _LIBC */
+
+#ifndef _LIBC
+/* Helper function for parse_bracket_exp only used in case of NOT _LIBC..
+   Build the collating element which is represented by NAME.
+   The result are written to MBCSET and SBCSET.
+   COLL_SYM_ALLOC is the allocated size of mbcset->coll_sym, is a
+   pointer argument since we may update it.  */
+
+static reg_errcode_t
+internal_function
+# ifdef RE_ENABLE_I18N
+build_collating_symbol (bitset_t sbcset, re_charset_t *mbcset,
+			int *coll_sym_alloc, const unsigned char *name)
+# else /* not RE_ENABLE_I18N */
+build_collating_symbol (bitset_t sbcset, const unsigned char *name)
+# endif /* not RE_ENABLE_I18N */
+{
+  size_t name_len = strlen ((const char *) name);
+  if (BE (name_len != 1, 0))
+    return REG_ECOLLATE;
+  else
+    {
+      bitset_set (sbcset, name[0]);
+      return REG_NOERROR;
+    }
+}
+#endif /* not _LIBC */
+
+/* This function parse bracket expression like "[abc]", "[a-c]",
+   "[[.a-a.]]" etc.  */
+
+static bin_tree_t *
+parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
+		   reg_syntax_t syntax, reg_errcode_t *err)
+{
+#ifdef _LIBC
+  const unsigned char *collseqmb;
+  const char *collseqwc;
+  uint32_t nrules;
+  int32_t table_size;
+  const int32_t *symb_table;
+  const unsigned char *extra;
+
+  /* Local function for parse_bracket_exp used in _LIBC environement.
+     Seek the collating symbol entry correspondings to NAME.
+     Return the index of the symbol in the SYMB_TABLE.  */
+
+  auto inline int32_t
+  __attribute ((always_inline))
+  seek_collating_symbol_entry (name, name_len)
+	 const unsigned char *name;
+	 size_t name_len;
+    {
+      int32_t hash = elem_hash ((const char *) name, name_len);
+      int32_t elem = hash % table_size;
+      if (symb_table[2 * elem] != 0)
+	{
+	  int32_t second = hash % (table_size - 2) + 1;
+
+	  do
+	    {
+	      /* First compare the hashing value.  */
+	      if (symb_table[2 * elem] == hash
+		  /* Compare the length of the name.  */
+		  && name_len == extra[symb_table[2 * elem + 1]]
+		  /* Compare the name.  */
+		  && memcmp (name, &extra[symb_table[2 * elem + 1] + 1],
+			     name_len) == 0)
+		{
+		  /* Yep, this is the entry.  */
+		  break;
+		}
+
+	      /* Next entry.  */
+	      elem += second;
+	    }
+	  while (symb_table[2 * elem] != 0);
+	}
+      return elem;
+    }
+
+  /* Local function for parse_bracket_exp used in _LIBC environement.
+     Look up the collation sequence value of BR_ELEM.
+     Return the value if succeeded, UINT_MAX otherwise.  */
+
+  auto inline unsigned int
+  __attribute ((always_inline))
+  lookup_collation_sequence_value (br_elem)
+	 bracket_elem_t *br_elem;
+    {
+      if (br_elem->type == SB_CHAR)
+	{
+	  /*
+	  if (MB_CUR_MAX == 1)
+	  */
+	  if (nrules == 0)
+	    return collseqmb[br_elem->opr.ch];
+	  else
+	    {
+	      wint_t wc = __btowc (br_elem->opr.ch);
+	      return __collseq_table_lookup (collseqwc, wc);
+	    }
+	}
+      else if (br_elem->type == MB_CHAR)
+	{
+	  return __collseq_table_lookup (collseqwc, br_elem->opr.wch);
+	}
+      else if (br_elem->type == COLL_SYM)
+	{
+	  size_t sym_name_len = strlen ((char *) br_elem->opr.name);
+	  if (nrules != 0)
+	    {
+	      int32_t elem, idx;
+	      elem = seek_collating_symbol_entry (br_elem->opr.name,
+						  sym_name_len);
+	      if (symb_table[2 * elem] != 0)
+		{
+		  /* We found the entry.  */
+		  idx = symb_table[2 * elem + 1];
+		  /* Skip the name of collating element name.  */
+		  idx += 1 + extra[idx];
+		  /* Skip the byte sequence of the collating element.  */
+		  idx += 1 + extra[idx];
+		  /* Adjust for the alignment.  */
+		  idx = (idx + 3) & ~3;
+		  /* Skip the multibyte collation sequence value.  */
+		  idx += sizeof (unsigned int);
+		  /* Skip the wide char sequence of the collating element.  */
+		  idx += sizeof (unsigned int) *
+		    (1 + *(unsigned int *) (extra + idx));
+		  /* Return the collation sequence value.  */
+		  return *(unsigned int *) (extra + idx);
+		}
+	      else if (symb_table[2 * elem] == 0 && sym_name_len == 1)
+		{
+		  /* No valid character.  Match it as a single byte
+		     character.  */
+		  return collseqmb[br_elem->opr.name[0]];
+		}
+	    }
+	  else if (sym_name_len == 1)
+	    return collseqmb[br_elem->opr.name[0]];
+	}
+      return UINT_MAX;
+    }
+
+  /* Local function for parse_bracket_exp used in _LIBC environement.
+     Build the range expression which starts from START_ELEM, and ends
+     at END_ELEM.  The result are written to MBCSET and SBCSET.
+     RANGE_ALLOC is the allocated size of mbcset->range_starts, and
+     mbcset->range_ends, is a pointer argument sinse we may
+     update it.  */
+
+  auto inline reg_errcode_t
+  __attribute ((always_inline))
+  build_range_exp (sbcset, mbcset, range_alloc, start_elem, end_elem)
+	 re_charset_t *mbcset;
+	 int *range_alloc;
+	 bitset_t sbcset;
+	 bracket_elem_t *start_elem, *end_elem;
+    {
+      unsigned int ch;
+      uint32_t start_collseq;
+      uint32_t end_collseq;
+
+      /* Equivalence Classes and Character Classes can't be a range
+	 start/end.  */
+      if (BE (start_elem->type == EQUIV_CLASS || start_elem->type == CHAR_CLASS
+	      || end_elem->type == EQUIV_CLASS || end_elem->type == CHAR_CLASS,
+	      0))
+	return REG_ERANGE;
+
+      start_collseq = lookup_collation_sequence_value (start_elem);
+      end_collseq = lookup_collation_sequence_value (end_elem);
+      /* Check start/end collation sequence values.  */
+      if (BE (start_collseq == UINT_MAX || end_collseq == UINT_MAX, 0))
+	return REG_ECOLLATE;
+      if (BE ((syntax & RE_NO_EMPTY_RANGES) && start_collseq > end_collseq, 0))
+	return REG_ERANGE;
+
+      /* Got valid collation sequence values, add them as a new entry.
+	 However, if we have no collation elements, and the character set
+	 is single byte, the single byte character set that we
+	 build below suffices. */
+      if (nrules > 0 || dfa->mb_cur_max > 1)
+	{
+          /* Check the space of the arrays.  */
+          if (BE (*range_alloc == mbcset->nranges, 0))
+	    {
+	      /* There is not enough space, need realloc.  */
+	      uint32_t *new_array_start;
+	      uint32_t *new_array_end;
+	      int new_nranges;
+
+	      /* +1 in case of mbcset->nranges is 0.  */
+	      new_nranges = 2 * mbcset->nranges + 1;
+	      new_array_start = re_realloc (mbcset->range_starts, uint32_t,
+					    new_nranges);
+	      new_array_end = re_realloc (mbcset->range_ends, uint32_t,
+				          new_nranges);
+
+	      if (BE (new_array_start == NULL || new_array_end == NULL, 0))
+	        return REG_ESPACE;
+
+	      mbcset->range_starts = new_array_start;
+	      mbcset->range_ends = new_array_end;
+	      *range_alloc = new_nranges;
+	    }
+
+          mbcset->range_starts[mbcset->nranges] = start_collseq;
+          mbcset->range_ends[mbcset->nranges++] = end_collseq;
+	}
+
+      /* Build the table for single byte characters.  */
+      for (ch = 0; ch < SBC_MAX; ch++)
+	{
+	  uint32_t ch_collseq;
+	  /*
+	  if (MB_CUR_MAX == 1)
+	  */
+	  if (nrules == 0)
+	    ch_collseq = collseqmb[ch];
+	  else
+	    ch_collseq = __collseq_table_lookup (collseqwc, __btowc (ch));
+	  if (start_collseq <= ch_collseq && ch_collseq <= end_collseq)
+	    bitset_set (sbcset, ch);
+	}
+      return REG_NOERROR;
+    }
+
+  /* Local function for parse_bracket_exp used in _LIBC environement.
+     Build the collating element which is represented by NAME.
+     The result are written to MBCSET and SBCSET.
+     COLL_SYM_ALLOC is the allocated size of mbcset->coll_sym, is a
+     pointer argument sinse we may update it.  */
+
+  auto inline reg_errcode_t
+  __attribute ((always_inline))
+  build_collating_symbol (sbcset, mbcset, coll_sym_alloc, name)
+	 re_charset_t *mbcset;
+	 int *coll_sym_alloc;
+	 bitset_t sbcset;
+	 const unsigned char *name;
+    {
+      int32_t elem, idx;
+      size_t name_len = strlen ((const char *) name);
+      if (nrules != 0)
+	{
+	  elem = seek_collating_symbol_entry (name, name_len);
+	  if (symb_table[2 * elem] != 0)
+	    {
+	      /* We found the entry.  */
+	      idx = symb_table[2 * elem + 1];
+	      /* Skip the name of collating element name.  */
+	      idx += 1 + extra[idx];
+	    }
+	  else if (symb_table[2 * elem] == 0 && name_len == 1)
+	    {
+	      /* No valid character, treat it as a normal
+		 character.  */
+	      bitset_set (sbcset, name[0]);
+	      return REG_NOERROR;
+	    }
+	  else
+	    return REG_ECOLLATE;
+
+	  /* Got valid collation sequence, add it as a new entry.  */
+	  /* Check the space of the arrays.  */
+	  if (BE (*coll_sym_alloc == mbcset->ncoll_syms, 0))
+	    {
+	      /* Not enough, realloc it.  */
+	      /* +1 in case of mbcset->ncoll_syms is 0.  */
+	      int new_coll_sym_alloc = 2 * mbcset->ncoll_syms + 1;
+	      /* Use realloc since mbcset->coll_syms is NULL
+		 if *alloc == 0.  */
+	      int32_t *new_coll_syms = re_realloc (mbcset->coll_syms, int32_t,
+						   new_coll_sym_alloc);
+	      if (BE (new_coll_syms == NULL, 0))
+		return REG_ESPACE;
+	      mbcset->coll_syms = new_coll_syms;
+	      *coll_sym_alloc = new_coll_sym_alloc;
+	    }
+	  mbcset->coll_syms[mbcset->ncoll_syms++] = idx;
+	  return REG_NOERROR;
+	}
+      else
+	{
+	  if (BE (name_len != 1, 0))
+	    return REG_ECOLLATE;
+	  else
+	    {
+	      bitset_set (sbcset, name[0]);
+	      return REG_NOERROR;
+	    }
+	}
+    }
+#endif
+
+  re_token_t br_token;
+  re_bitset_ptr_t sbcset;
+#ifdef RE_ENABLE_I18N
+  re_charset_t *mbcset;
+  int coll_sym_alloc = 0, range_alloc = 0, mbchar_alloc = 0;
+  int equiv_class_alloc = 0, char_class_alloc = 0;
+#endif /* not RE_ENABLE_I18N */
+  int non_match = 0;
+  bin_tree_t *work_tree;
+  int token_len;
+  int first_round = 1;
+#ifdef _LIBC
+  collseqmb = (const unsigned char *)
+    _NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQMB);
+  nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
+  if (nrules)
+    {
+      /*
+      if (MB_CUR_MAX > 1)
+      */
+      collseqwc = _NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQWC);
+      table_size = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_SYMB_HASH_SIZEMB);
+      symb_table = (const int32_t *) _NL_CURRENT (LC_COLLATE,
+						  _NL_COLLATE_SYMB_TABLEMB);
+      extra = (const unsigned char *) _NL_CURRENT (LC_COLLATE,
+						   _NL_COLLATE_SYMB_EXTRAMB);
+    }
+#endif
+  sbcset = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 1);
+#ifdef RE_ENABLE_I18N
+  mbcset = (re_charset_t *) calloc (sizeof (re_charset_t), 1);
+#endif /* RE_ENABLE_I18N */
+#ifdef RE_ENABLE_I18N
+  if (BE (sbcset == NULL || mbcset == NULL, 0))
+#else
+  if (BE (sbcset == NULL, 0))
+#endif /* RE_ENABLE_I18N */
+    {
+      *err = REG_ESPACE;
+      return NULL;
+    }
+
+  token_len = peek_token_bracket (token, regexp, syntax);
+  if (BE (token->type == END_OF_RE, 0))
+    {
+      *err = REG_BADPAT;
+      goto parse_bracket_exp_free_return;
+    }
+  if (token->type == OP_NON_MATCH_LIST)
+    {
+#ifdef RE_ENABLE_I18N
+      mbcset->non_match = 1;
+#endif /* not RE_ENABLE_I18N */
+      non_match = 1;
+      if (syntax & RE_HAT_LISTS_NOT_NEWLINE)
+	bitset_set (sbcset, '\0');
+      re_string_skip_bytes (regexp, token_len); /* Skip a token.  */
+      token_len = peek_token_bracket (token, regexp, syntax);
+      if (BE (token->type == END_OF_RE, 0))
+	{
+	  *err = REG_BADPAT;
+	  goto parse_bracket_exp_free_return;
+	}
+    }
+
+  /* We treat the first ']' as a normal character.  */
+  if (token->type == OP_CLOSE_BRACKET)
+    token->type = CHARACTER;
+
+  while (1)
+    {
+      bracket_elem_t start_elem, end_elem;
+      unsigned char start_name_buf[BRACKET_NAME_BUF_SIZE];
+      unsigned char end_name_buf[BRACKET_NAME_BUF_SIZE];
+      reg_errcode_t ret;
+      int token_len2 = 0, is_range_exp = 0;
+      re_token_t token2;
+
+      start_elem.opr.name = start_name_buf;
+      ret = parse_bracket_element (&start_elem, regexp, token, token_len, dfa,
+				   syntax, first_round);
+      if (BE (ret != REG_NOERROR, 0))
+	{
+	  *err = ret;
+	  goto parse_bracket_exp_free_return;
+	}
+      first_round = 0;
+
+      /* Get information about the next token.  We need it in any case.  */
+      token_len = peek_token_bracket (token, regexp, syntax);
+
+      /* Do not check for ranges if we know they are not allowed.  */
+      if (start_elem.type != CHAR_CLASS && start_elem.type != EQUIV_CLASS)
+	{
+	  if (BE (token->type == END_OF_RE, 0))
+	    {
+	      *err = REG_EBRACK;
+	      goto parse_bracket_exp_free_return;
+	    }
+	  if (token->type == OP_CHARSET_RANGE)
+	    {
+	      re_string_skip_bytes (regexp, token_len); /* Skip '-'.  */
+	      token_len2 = peek_token_bracket (&token2, regexp, syntax);
+	      if (BE (token2.type == END_OF_RE, 0))
+		{
+		  *err = REG_EBRACK;
+		  goto parse_bracket_exp_free_return;
+		}
+	      if (token2.type == OP_CLOSE_BRACKET)
+		{
+		  /* We treat the last '-' as a normal character.  */
+		  re_string_skip_bytes (regexp, -token_len);
+		  token->type = CHARACTER;
+		}
+	      else
+		is_range_exp = 1;
+	    }
+	}
+
+      if (is_range_exp == 1)
+	{
+	  end_elem.opr.name = end_name_buf;
+	  ret = parse_bracket_element (&end_elem, regexp, &token2, token_len2,
+				       dfa, syntax, 1);
+	  if (BE (ret != REG_NOERROR, 0))
+	    {
+	      *err = ret;
+	      goto parse_bracket_exp_free_return;
+	    }
+
+	  token_len = peek_token_bracket (token, regexp, syntax);
+
+#ifdef _LIBC
+	  *err = build_range_exp (sbcset, mbcset, &range_alloc,
+				  &start_elem, &end_elem);
+#else
+# ifdef RE_ENABLE_I18N
+	  *err = build_range_exp (sbcset,
+				  dfa->mb_cur_max > 1 ? mbcset : NULL,
+				  &range_alloc, &start_elem, &end_elem);
+# else
+	  *err = build_range_exp (sbcset, &start_elem, &end_elem);
+# endif
+#endif /* RE_ENABLE_I18N */
+	  if (BE (*err != REG_NOERROR, 0))
+	    goto parse_bracket_exp_free_return;
+	}
+      else
+	{
+	  switch (start_elem.type)
+	    {
+	    case SB_CHAR:
+	      bitset_set (sbcset, start_elem.opr.ch);
+	      break;
+#ifdef RE_ENABLE_I18N
+	    case MB_CHAR:
+	      /* Check whether the array has enough space.  */
+	      if (BE (mbchar_alloc == mbcset->nmbchars, 0))
+		{
+		  wchar_t *new_mbchars;
+		  /* Not enough, realloc it.  */
+		  /* +1 in case of mbcset->nmbchars is 0.  */
+		  mbchar_alloc = 2 * mbcset->nmbchars + 1;
+		  /* Use realloc since array is NULL if *alloc == 0.  */
+		  new_mbchars = re_realloc (mbcset->mbchars, wchar_t,
+					    mbchar_alloc);
+		  if (BE (new_mbchars == NULL, 0))
+		    goto parse_bracket_exp_espace;
+		  mbcset->mbchars = new_mbchars;
+		}
+	      mbcset->mbchars[mbcset->nmbchars++] = start_elem.opr.wch;
+	      break;
+#endif /* RE_ENABLE_I18N */
+	    case EQUIV_CLASS:
+	      *err = build_equiv_class (sbcset,
+#ifdef RE_ENABLE_I18N
+					mbcset, &equiv_class_alloc,
+#endif /* RE_ENABLE_I18N */
+					start_elem.opr.name);
+	      if (BE (*err != REG_NOERROR, 0))
+		goto parse_bracket_exp_free_return;
+	      break;
+	    case COLL_SYM:
+	      *err = build_collating_symbol (sbcset,
+#ifdef RE_ENABLE_I18N
+					     mbcset, &coll_sym_alloc,
+#endif /* RE_ENABLE_I18N */
+					     start_elem.opr.name);
+	      if (BE (*err != REG_NOERROR, 0))
+		goto parse_bracket_exp_free_return;
+	      break;
+	    case CHAR_CLASS:
+	      *err = build_charclass (regexp->trans, sbcset,
+#ifdef RE_ENABLE_I18N
+				      mbcset, &char_class_alloc,
+#endif /* RE_ENABLE_I18N */
+				      start_elem.opr.name, syntax);
+	      if (BE (*err != REG_NOERROR, 0))
+	       goto parse_bracket_exp_free_return;
+	      break;
+	    default:
+	      assert (0);
+	      break;
+	    }
+	}
+      if (BE (token->type == END_OF_RE, 0))
+	{
+	  *err = REG_EBRACK;
+	  goto parse_bracket_exp_free_return;
+	}
+      if (token->type == OP_CLOSE_BRACKET)
+	break;
+    }
+
+  re_string_skip_bytes (regexp, token_len); /* Skip a token.  */
+
+  /* If it is non-matching list.  */
+  if (non_match)
+    bitset_not (sbcset);
+
+#ifdef RE_ENABLE_I18N
+  /* Ensure only single byte characters are set.  */
+  if (dfa->mb_cur_max > 1)
+    bitset_mask (sbcset, dfa->sb_char);
+
+  if (mbcset->nmbchars || mbcset->ncoll_syms || mbcset->nequiv_classes
+      || mbcset->nranges || (dfa->mb_cur_max > 1 && (mbcset->nchar_classes
+						     || mbcset->non_match)))
+    {
+      bin_tree_t *mbc_tree;
+      int sbc_idx;
+      /* Build a tree for complex bracket.  */
+      dfa->has_mb_node = 1;
+      br_token.type = COMPLEX_BRACKET;
+      br_token.opr.mbcset = mbcset;
+      mbc_tree = create_token_tree (dfa, NULL, NULL, &br_token);
+      if (BE (mbc_tree == NULL, 0))
+	goto parse_bracket_exp_espace;
+      for (sbc_idx = 0; sbc_idx < BITSET_WORDS; ++sbc_idx)
+	if (sbcset[sbc_idx])
+	  break;
+      /* If there are no bits set in sbcset, there is no point
+	 of having both SIMPLE_BRACKET and COMPLEX_BRACKET.  */
+      if (sbc_idx < BITSET_WORDS)
+	{
+          /* Build a tree for simple bracket.  */
+          br_token.type = SIMPLE_BRACKET;
+          br_token.opr.sbcset = sbcset;
+          work_tree = create_token_tree (dfa, NULL, NULL, &br_token);
+          if (BE (work_tree == NULL, 0))
+            goto parse_bracket_exp_espace;
+
+          /* Then join them by ALT node.  */
+          work_tree = create_tree (dfa, work_tree, mbc_tree, OP_ALT);
+          if (BE (work_tree == NULL, 0))
+            goto parse_bracket_exp_espace;
+	}
+      else
+	{
+	  re_free (sbcset);
+	  work_tree = mbc_tree;
+	}
+    }
+  else
+#endif /* not RE_ENABLE_I18N */
+    {
+#ifdef RE_ENABLE_I18N
+      free_charset (mbcset);
+#endif
+      /* Build a tree for simple bracket.  */
+      br_token.type = SIMPLE_BRACKET;
+      br_token.opr.sbcset = sbcset;
+      work_tree = create_token_tree (dfa, NULL, NULL, &br_token);
+      if (BE (work_tree == NULL, 0))
+        goto parse_bracket_exp_espace;
+    }
+  return work_tree;
+
+ parse_bracket_exp_espace:
+  *err = REG_ESPACE;
+ parse_bracket_exp_free_return:
+  re_free (sbcset);
+#ifdef RE_ENABLE_I18N
+  free_charset (mbcset);
+#endif /* RE_ENABLE_I18N */
+  return NULL;
+}
+
+/* Parse an element in the bracket expression.  */
+
+static reg_errcode_t
+parse_bracket_element (bracket_elem_t *elem, re_string_t *regexp,
+		       re_token_t *token, int token_len, re_dfa_t *dfa,
+		       reg_syntax_t syntax, int accept_hyphen)
+{
+#ifdef RE_ENABLE_I18N
+  int cur_char_size;
+  cur_char_size = re_string_char_size_at (regexp, re_string_cur_idx (regexp));
+  if (cur_char_size > 1)
+    {
+      elem->type = MB_CHAR;
+      elem->opr.wch = re_string_wchar_at (regexp, re_string_cur_idx (regexp));
+      re_string_skip_bytes (regexp, cur_char_size);
+      return REG_NOERROR;
+    }
+#endif /* RE_ENABLE_I18N */
+  re_string_skip_bytes (regexp, token_len); /* Skip a token.  */
+  if (token->type == OP_OPEN_COLL_ELEM || token->type == OP_OPEN_CHAR_CLASS
+      || token->type == OP_OPEN_EQUIV_CLASS)
+    return parse_bracket_symbol (elem, regexp, token);
+  if (BE (token->type == OP_CHARSET_RANGE, 0) && !accept_hyphen)
+    {
+      /* A '-' must only appear as anything but a range indicator before
+	 the closing bracket.  Everything else is an error.  */
+      re_token_t token2;
+      (void) peek_token_bracket (&token2, regexp, syntax);
+      if (token2.type != OP_CLOSE_BRACKET)
+	/* The actual error value is not standardized since this whole
+	   case is undefined.  But ERANGE makes good sense.  */
+	return REG_ERANGE;
+    }
+  elem->type = SB_CHAR;
+  elem->opr.ch = token->opr.c;
+  return REG_NOERROR;
+}
+
+/* Parse a bracket symbol in the bracket expression.  Bracket symbols are
+   such as [:<character_class>:], [.<collating_element>.], and
+   [=<equivalent_class>=].  */
+
+static reg_errcode_t
+parse_bracket_symbol (bracket_elem_t *elem, re_string_t *regexp,
+		      re_token_t *token)
+{
+  unsigned char ch, delim = token->opr.c;
+  int i = 0;
+  if (re_string_eoi(regexp))
+    return REG_EBRACK;
+  for (;; ++i)
+    {
+      if (i >= BRACKET_NAME_BUF_SIZE)
+	return REG_EBRACK;
+      if (token->type == OP_OPEN_CHAR_CLASS)
+	ch = re_string_fetch_byte_case (regexp);
+      else
+	ch = re_string_fetch_byte (regexp);
+      if (re_string_eoi(regexp))
+	return REG_EBRACK;
+      if (ch == delim && re_string_peek_byte (regexp, 0) == ']')
+	break;
+      elem->opr.name[i] = ch;
+    }
+  re_string_skip_bytes (regexp, 1);
+  elem->opr.name[i] = '\0';
+  switch (token->type)
+    {
+    case OP_OPEN_COLL_ELEM:
+      elem->type = COLL_SYM;
+      break;
+    case OP_OPEN_EQUIV_CLASS:
+      elem->type = EQUIV_CLASS;
+      break;
+    case OP_OPEN_CHAR_CLASS:
+      elem->type = CHAR_CLASS;
+      break;
+    default:
+      break;
+    }
+  return REG_NOERROR;
+}
+
+  /* Helper function for parse_bracket_exp.
+     Build the equivalence class which is represented by NAME.
+     The result are written to MBCSET and SBCSET.
+     EQUIV_CLASS_ALLOC is the allocated size of mbcset->equiv_classes,
+     is a pointer argument sinse we may update it.  */
+
+static reg_errcode_t
+#ifdef RE_ENABLE_I18N
+build_equiv_class (bitset_t sbcset, re_charset_t *mbcset,
+		   int *equiv_class_alloc, const unsigned char *name)
+#else /* not RE_ENABLE_I18N */
+build_equiv_class (bitset_t sbcset, const unsigned char *name)
+#endif /* not RE_ENABLE_I18N */
+{
+#ifdef _LIBC
+  uint32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
+  if (nrules != 0)
+    {
+      const int32_t *table, *indirect;
+      const unsigned char *weights, *extra, *cp;
+      unsigned char char_buf[2];
+      int32_t idx1, idx2;
+      unsigned int ch;
+      size_t len;
+      /* This #include defines a local function!  */
+# include <locale/weight.h>
+      /* Calculate the index for equivalence class.  */
+      cp = name;
+      table = (const int32_t *) _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
+      weights = (const unsigned char *) _NL_CURRENT (LC_COLLATE,
+					       _NL_COLLATE_WEIGHTMB);
+      extra = (const unsigned char *) _NL_CURRENT (LC_COLLATE,
+						   _NL_COLLATE_EXTRAMB);
+      indirect = (const int32_t *) _NL_CURRENT (LC_COLLATE,
+						_NL_COLLATE_INDIRECTMB);
+      idx1 = findidx (&cp);
+      if (BE (idx1 == 0 || cp < name + strlen ((const char *) name), 0))
+	/* This isn't a valid character.  */
+	return REG_ECOLLATE;
+
+      /* Build single byte matcing table for this equivalence class.  */
+      char_buf[1] = (unsigned char) '\0';
+      len = weights[idx1];
+      for (ch = 0; ch < SBC_MAX; ++ch)
+	{
+	  char_buf[0] = ch;
+	  cp = char_buf;
+	  idx2 = findidx (&cp);
+/*
+	  idx2 = table[ch];
+*/
+	  if (idx2 == 0)
+	    /* This isn't a valid character.  */
+	    continue;
+	  if (len == weights[idx2])
+	    {
+	      int cnt = 0;
+	      while (cnt <= len &&
+		     weights[idx1 + 1 + cnt] == weights[idx2 + 1 + cnt])
+		++cnt;
+
+	      if (cnt > len)
+		bitset_set (sbcset, ch);
+	    }
+	}
+      /* Check whether the array has enough space.  */
+      if (BE (*equiv_class_alloc == mbcset->nequiv_classes, 0))
+	{
+	  /* Not enough, realloc it.  */
+	  /* +1 in case of mbcset->nequiv_classes is 0.  */
+	  int new_equiv_class_alloc = 2 * mbcset->nequiv_classes + 1;
+	  /* Use realloc since the array is NULL if *alloc == 0.  */
+	  int32_t *new_equiv_classes = re_realloc (mbcset->equiv_classes,
+						   int32_t,
+						   new_equiv_class_alloc);
+	  if (BE (new_equiv_classes == NULL, 0))
+	    return REG_ESPACE;
+	  mbcset->equiv_classes = new_equiv_classes;
+	  *equiv_class_alloc = new_equiv_class_alloc;
+	}
+      mbcset->equiv_classes[mbcset->nequiv_classes++] = idx1;
+    }
+  else
+#endif /* _LIBC */
+    {
+      if (BE (strlen ((const char *) name) != 1, 0))
+	return REG_ECOLLATE;
+      bitset_set (sbcset, *name);
+    }
+  return REG_NOERROR;
+}
+
+  /* Helper function for parse_bracket_exp.
+     Build the character class which is represented by NAME.
+     The result are written to MBCSET and SBCSET.
+     CHAR_CLASS_ALLOC is the allocated size of mbcset->char_classes,
+     is a pointer argument sinse we may update it.  */
+
+static reg_errcode_t
+#ifdef RE_ENABLE_I18N
+build_charclass (RE_TRANSLATE_TYPE trans, bitset_t sbcset,
+		 re_charset_t *mbcset, int *char_class_alloc,
+		 const unsigned char *class_name, reg_syntax_t syntax)
+#else /* not RE_ENABLE_I18N */
+build_charclass (RE_TRANSLATE_TYPE trans, bitset_t sbcset,
+		 const unsigned char *class_name, reg_syntax_t syntax)
+#endif /* not RE_ENABLE_I18N */
+{
+  int i;
+  const char *name = (const char *) class_name;
+
+  /* In case of REG_ICASE "upper" and "lower" match the both of
+     upper and lower cases.  */
+  if ((syntax & RE_ICASE)
+      && (strcmp (name, "upper") == 0 || strcmp (name, "lower") == 0))
+    name = "alpha";
+
+#ifdef RE_ENABLE_I18N
+  /* Check the space of the arrays.  */
+  if (BE (*char_class_alloc == mbcset->nchar_classes, 0))
+    {
+      /* Not enough, realloc it.  */
+      /* +1 in case of mbcset->nchar_classes is 0.  */
+      int new_char_class_alloc = 2 * mbcset->nchar_classes + 1;
+      /* Use realloc since array is NULL if *alloc == 0.  */
+      wctype_t *new_char_classes = re_realloc (mbcset->char_classes, wctype_t,
+					       new_char_class_alloc);
+      if (BE (new_char_classes == NULL, 0))
+	return REG_ESPACE;
+      mbcset->char_classes = new_char_classes;
+      *char_class_alloc = new_char_class_alloc;
+    }
+  mbcset->char_classes[mbcset->nchar_classes++] = __wctype (name);
+#endif /* RE_ENABLE_I18N */
+
+#define BUILD_CHARCLASS_LOOP(ctype_func)	\
+  do {						\
+    if (BE (trans != NULL, 0))			\
+      {						\
+	for (i = 0; i < SBC_MAX; ++i)		\
+  	  if (ctype_func (i))			\
+	    bitset_set (sbcset, trans[i]);	\
+      }						\
+    else					\
+      {						\
+	for (i = 0; i < SBC_MAX; ++i)		\
+  	  if (ctype_func (i))			\
+	    bitset_set (sbcset, i);		\
+      }						\
+  } while (0)
+
+  if (strcmp (name, "alnum") == 0)
+    BUILD_CHARCLASS_LOOP (isalnum);
+  else if (strcmp (name, "cntrl") == 0)
+    BUILD_CHARCLASS_LOOP (iscntrl);
+  else if (strcmp (name, "lower") == 0)
+    BUILD_CHARCLASS_LOOP (islower);
+  else if (strcmp (name, "space") == 0)
+    BUILD_CHARCLASS_LOOP (isspace);
+  else if (strcmp (name, "alpha") == 0)
+    BUILD_CHARCLASS_LOOP (isalpha);
+  else if (strcmp (name, "digit") == 0)
+    BUILD_CHARCLASS_LOOP (isdigit);
+  else if (strcmp (name, "print") == 0)
+    BUILD_CHARCLASS_LOOP (isprint);
+  else if (strcmp (name, "upper") == 0)
+    BUILD_CHARCLASS_LOOP (isupper);
+  else if (strcmp (name, "blank") == 0)
+    BUILD_CHARCLASS_LOOP (isblank);
+  else if (strcmp (name, "graph") == 0)
+    BUILD_CHARCLASS_LOOP (isgraph);
+  else if (strcmp (name, "punct") == 0)
+    BUILD_CHARCLASS_LOOP (ispunct);
+  else if (strcmp (name, "xdigit") == 0)
+    BUILD_CHARCLASS_LOOP (isxdigit);
+  else
+    return REG_ECTYPE;
+
+  return REG_NOERROR;
+}
+
+static bin_tree_t *
+build_charclass_op (re_dfa_t *dfa, RE_TRANSLATE_TYPE trans,
+		    const unsigned char *class_name,
+		    const unsigned char *extra, int non_match,
+		    reg_errcode_t *err)
+{
+  re_bitset_ptr_t sbcset;
+#ifdef RE_ENABLE_I18N
+  re_charset_t *mbcset;
+  int alloc = 0;
+#endif /* not RE_ENABLE_I18N */
+  reg_errcode_t ret;
+  re_token_t br_token;
+  bin_tree_t *tree;
+
+  sbcset = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 1);
+#ifdef RE_ENABLE_I18N
+  mbcset = (re_charset_t *) calloc (sizeof (re_charset_t), 1);
+#endif /* RE_ENABLE_I18N */
+
+#ifdef RE_ENABLE_I18N
+  if (BE (sbcset == NULL || mbcset == NULL, 0))
+#else /* not RE_ENABLE_I18N */
+  if (BE (sbcset == NULL, 0))
+#endif /* not RE_ENABLE_I18N */
+    {
+      *err = REG_ESPACE;
+      return NULL;
+    }
+
+  if (non_match)
+    {
+#ifdef RE_ENABLE_I18N
+      /*
+      if (syntax & RE_HAT_LISTS_NOT_NEWLINE)
+	bitset_set(cset->sbcset, '\0');
+      */
+      mbcset->non_match = 1;
+#endif /* not RE_ENABLE_I18N */
+    }
+
+  /* We don't care the syntax in this case.  */
+  ret = build_charclass (trans, sbcset,
+#ifdef RE_ENABLE_I18N
+			 mbcset, &alloc,
+#endif /* RE_ENABLE_I18N */
+			 class_name, 0);
+
+  if (BE (ret != REG_NOERROR, 0))
+    {
+      re_free (sbcset);
+#ifdef RE_ENABLE_I18N
+      free_charset (mbcset);
+#endif /* RE_ENABLE_I18N */
+      *err = ret;
+      return NULL;
+    }
+  /* \w match '_' also.  */
+  for (; *extra; extra++)
+    bitset_set (sbcset, *extra);
+
+  /* If it is non-matching list.  */
+  if (non_match)
+    bitset_not (sbcset);
+
+#ifdef RE_ENABLE_I18N
+  /* Ensure only single byte characters are set.  */
+  if (dfa->mb_cur_max > 1)
+    bitset_mask (sbcset, dfa->sb_char);
+#endif
+
+  /* Build a tree for simple bracket.  */
+  br_token.type = SIMPLE_BRACKET;
+  br_token.opr.sbcset = sbcset;
+  tree = create_token_tree (dfa, NULL, NULL, &br_token);
+  if (BE (tree == NULL, 0))
+    goto build_word_op_espace;
+
+#ifdef RE_ENABLE_I18N
+  if (dfa->mb_cur_max > 1)
+    {
+      bin_tree_t *mbc_tree;
+      /* Build a tree for complex bracket.  */
+      br_token.type = COMPLEX_BRACKET;
+      br_token.opr.mbcset = mbcset;
+      dfa->has_mb_node = 1;
+      mbc_tree = create_token_tree (dfa, NULL, NULL, &br_token);
+      if (BE (mbc_tree == NULL, 0))
+	goto build_word_op_espace;
+      /* Then join them by ALT node.  */
+      tree = create_tree (dfa, tree, mbc_tree, OP_ALT);
+      if (BE (mbc_tree != NULL, 1))
+	return tree;
+    }
+  else
+    {
+      free_charset (mbcset);
+      return tree;
+    }
+#else /* not RE_ENABLE_I18N */
+  return tree;
+#endif /* not RE_ENABLE_I18N */
+
+ build_word_op_espace:
+  re_free (sbcset);
+#ifdef RE_ENABLE_I18N
+  free_charset (mbcset);
+#endif /* RE_ENABLE_I18N */
+  *err = REG_ESPACE;
+  return NULL;
+}
+
+/* This is intended for the expressions like "a{1,3}".
+   Fetch a number from `input', and return the number.
+   Return -1, if the number field is empty like "{,1}".
+   Return -2, If an error is occured.  */
+
+static int
+fetch_number (re_string_t *input, re_token_t *token, reg_syntax_t syntax)
+{
+  int num = -1;
+  unsigned char c;
+  while (1)
+    {
+      fetch_token (token, input, syntax);
+      c = token->opr.c;
+      if (BE (token->type == END_OF_RE, 0))
+	return -2;
+      if (token->type == OP_CLOSE_DUP_NUM || c == ',')
+	break;
+      num = ((token->type != CHARACTER || c < '0' || '9' < c || num == -2)
+	     ? -2 : ((num == -1) ? c - '0' : num * 10 + c - '0'));
+      num = (num > RE_DUP_MAX) ? -2 : num;
+    }
+  return num;
+}
+
+#ifdef RE_ENABLE_I18N
+static void
+free_charset (re_charset_t *cset)
+{
+  re_free (cset->mbchars);
+# ifdef _LIBC
+  re_free (cset->coll_syms);
+  re_free (cset->equiv_classes);
+  re_free (cset->range_starts);
+  re_free (cset->range_ends);
+# endif
+  re_free (cset->char_classes);
+  re_free (cset);
+}
+#endif /* RE_ENABLE_I18N */
+
+/* Functions for binary tree operation.  */
+
+/* Create a tree node.  */
+
+static bin_tree_t *
+create_tree (re_dfa_t *dfa, bin_tree_t *left, bin_tree_t *right,
+	     re_token_type_t type)
+{
+  re_token_t t;
+  t.type = type;
+  return create_token_tree (dfa, left, right, &t);
+}
+
+static bin_tree_t *
+create_token_tree (re_dfa_t *dfa, bin_tree_t *left, bin_tree_t *right,
+		   const re_token_t *token)
+{
+  bin_tree_t *tree;
+  if (BE (dfa->str_tree_storage_idx == BIN_TREE_STORAGE_SIZE, 0))
+    {
+      bin_tree_storage_t *storage = re_malloc (bin_tree_storage_t, 1);
+
+      if (storage == NULL)
+	return NULL;
+      storage->next = dfa->str_tree_storage;
+      dfa->str_tree_storage = storage;
+      dfa->str_tree_storage_idx = 0;
+    }
+  tree = &dfa->str_tree_storage->data[dfa->str_tree_storage_idx++];
+
+  tree->parent = NULL;
+  tree->left = left;
+  tree->right = right;
+  tree->token = *token;
+  tree->token.duplicated = 0;
+  tree->token.opt_subexp = 0;
+  tree->first = NULL;
+  tree->next = NULL;
+  tree->node_idx = -1;
+
+  if (left != NULL)
+    left->parent = tree;
+  if (right != NULL)
+    right->parent = tree;
+  return tree;
+}
+
+/* Mark the tree SRC as an optional subexpression.
+   To be called from preorder or postorder.  */
+
+static reg_errcode_t
+mark_opt_subexp (void *extra, bin_tree_t *node)
+{
+  int idx = (int) (long) extra;
+  if (node->token.type == SUBEXP && node->token.opr.idx == idx)
+    node->token.opt_subexp = 1;
+
+  return REG_NOERROR;
+}
+
+/* Free the allocated memory inside NODE. */
+
+static void
+free_token (re_token_t *node)
+{
+#ifdef RE_ENABLE_I18N
+  if (node->type == COMPLEX_BRACKET && node->duplicated == 0)
+    free_charset (node->opr.mbcset);
+  else
+#endif /* RE_ENABLE_I18N */
+    if (node->type == SIMPLE_BRACKET && node->duplicated == 0)
+      re_free (node->opr.sbcset);
+}
+
+/* Worker function for tree walking.  Free the allocated memory inside NODE
+   and its children. */
+
+static reg_errcode_t
+free_tree (void *extra, bin_tree_t *node)
+{
+  free_token (&node->token);
+  return REG_NOERROR;
+}
+
+
+/* Duplicate the node SRC, and return new node.  This is a preorder
+   visit similar to the one implemented by the generic visitor, but
+   we need more infrastructure to maintain two parallel trees --- so,
+   it's easier to duplicate.  */
+
+static bin_tree_t *
+duplicate_tree (const bin_tree_t *root, re_dfa_t *dfa)
+{
+  const bin_tree_t *node;
+  bin_tree_t *dup_root;
+  bin_tree_t **p_new = &dup_root, *dup_node = root->parent;
+
+  for (node = root; ; )
+    {
+      /* Create a new tree and link it back to the current parent.  */
+      *p_new = create_token_tree (dfa, NULL, NULL, &node->token);
+      if (*p_new == NULL)
+	return NULL;
+      (*p_new)->parent = dup_node;
+      (*p_new)->token.duplicated = 1;
+      dup_node = *p_new;
+
+      /* Go to the left node, or up and to the right.  */
+      if (node->left)
+	{
+	  node = node->left;
+	  p_new = &dup_node->left;
+	}
+      else
+	{
+	  const bin_tree_t *prev = NULL;
+	  while (node->right == prev || node->right == NULL)
+	    {
+	      prev = node;
+	      node = node->parent;
+	      dup_node = dup_node->parent;
+	      if (!node)
+	        return dup_root;
+	    }
+	  node = node->right;
+	  p_new = &dup_node->right;
+	}
+    }
+}
diff --git a/src/sed/lib/regex.c b/src/sed/lib/regex.c
new file mode 100644
index 0000000..d2d4f28
--- /dev/null
+++ b/src/sed/lib/regex.c
@@ -0,0 +1,74 @@
+/* Extended regular expression matching and search library.
+   Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* Make sure noone compiles this code with a C++ compiler.  */
+#ifdef __cplusplus
+# error "This is C code, use a C compiler"
+#endif
+
+#ifdef _LIBC
+/* We have to keep the namespace clean.  */
+# define regfree(preg) __regfree (preg)
+# define regexec(pr, st, nm, pm, ef) __regexec (pr, st, nm, pm, ef)
+# define regcomp(preg, pattern, cflags) __regcomp (preg, pattern, cflags)
+# define regerror(errcode, preg, errbuf, errbuf_size) \
+	__regerror(errcode, preg, errbuf, errbuf_size)
+# define re_set_registers(bu, re, nu, st, en) \
+	__re_set_registers (bu, re, nu, st, en)
+# define re_match_2(bufp, string1, size1, string2, size2, pos, regs, stop) \
+	__re_match_2 (bufp, string1, size1, string2, size2, pos, regs, stop)
+# define re_match(bufp, string, size, pos, regs) \
+	__re_match (bufp, string, size, pos, regs)
+# define re_search(bufp, string, size, startpos, range, regs) \
+	__re_search (bufp, string, size, startpos, range, regs)
+# define re_compile_pattern(pattern, length, bufp) \
+	__re_compile_pattern (pattern, length, bufp)
+# define re_set_syntax(syntax) __re_set_syntax (syntax)
+# define re_search_2(bufp, st1, s1, st2, s2, startpos, range, regs, stop) \
+	__re_search_2 (bufp, st1, s1, st2, s2, startpos, range, regs, stop)
+# define re_compile_fastmap(bufp) __re_compile_fastmap (bufp)
+
+# include "../locale/localeinfo.h"
+#endif
+
+/* On some systems, limits.h sets RE_DUP_MAX to a lower value than
+   GNU regex allows.  Include it before <regex.h>, which correctly
+   #undefs RE_DUP_MAX and sets it to the right value.  */
+#include <limits.h>
+
+#include <regex.h>
+#include "regex_internal.h"
+
+#include "regex_internal.c"
+#include "regcomp.c"
+#include "regexec.c"
+
+/* Binary backward compatibility.  */
+#if _LIBC
+# include <shlib-compat.h>
+# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3)
+link_warning (re_max_failures, "the 're_max_failures' variable is obsolete and will go away.")
+int re_max_failures = 2000;
+# endif
+#endif
diff --git a/src/sed/lib/regex_.h b/src/sed/lib/regex_.h
new file mode 100644
index 0000000..f6c145d
--- /dev/null
+++ b/src/sed/lib/regex_.h
@@ -0,0 +1,564 @@
+/* Definitions for data structures and routines for the regular
+   expression library.
+   Copyright (C) 1985,1989-93,1995-98,2000,2001,2002,2003,2005
+   Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _REGEX_H
+#define _REGEX_H 1
+
+#include <sys/types.h>
+
+/* Allow the use in C++ code.  */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* POSIX says that <sys/types.h> must be included (by the caller) before
+   <regex.h>.  */
+
+#if !defined _POSIX_C_SOURCE && !defined _POSIX_SOURCE && defined VMS
+/* VMS doesn't have `size_t' in <sys/types.h>, even though POSIX says it
+   should be there.  */
+# include <stddef.h>
+#endif
+
+/* The following two types have to be signed and unsigned integer type
+   wide enough to hold a value of a pointer.  For most ANSI compilers
+   ptrdiff_t and size_t should be likely OK.  Still size of these two
+   types is 2 for Microsoft C.  Ugh... */
+typedef long int s_reg_t;
+typedef unsigned long int active_reg_t;
+
+/* The following bits are used to determine the regexp syntax we
+   recognize.  The set/not-set meanings are chosen so that Emacs syntax
+   remains the value 0.  The bits are given in alphabetical order, and
+   the definitions shifted by one from the previous bit; thus, when we
+   add or remove a bit, only one other definition need change.  */
+typedef unsigned long int reg_syntax_t;
+
+/* If this bit is not set, then \ inside a bracket expression is literal.
+   If set, then such a \ quotes the following character.  */
+#define RE_BACKSLASH_ESCAPE_IN_LISTS ((unsigned long int) 1)
+
+/* If this bit is not set, then + and ? are operators, and \+ and \? are
+     literals.
+   If set, then \+ and \? are operators and + and ? are literals.  */
+#define RE_BK_PLUS_QM (RE_BACKSLASH_ESCAPE_IN_LISTS << 1)
+
+/* If this bit is set, then character classes are supported.  They are:
+     [:alpha:], [:upper:], [:lower:],  [:digit:], [:alnum:], [:xdigit:],
+     [:space:], [:print:], [:punct:], [:graph:], and [:cntrl:].
+   If not set, then character classes are not supported.  */
+#define RE_CHAR_CLASSES (RE_BK_PLUS_QM << 1)
+
+/* If this bit is set, then ^ and $ are always anchors (outside bracket
+     expressions, of course).
+   If this bit is not set, then it depends:
+        ^  is an anchor if it is at the beginning of a regular
+           expression or after an open-group or an alternation operator;
+        $  is an anchor if it is at the end of a regular expression, or
+           before a close-group or an alternation operator.
+
+   This bit could be (re)combined with RE_CONTEXT_INDEP_OPS, because
+   POSIX draft 11.2 says that * etc. in leading positions is undefined.
+   We already implemented a previous draft which made those constructs
+   invalid, though, so we haven't changed the code back.  */
+#define RE_CONTEXT_INDEP_ANCHORS (RE_CHAR_CLASSES << 1)
+
+/* If this bit is set, then special characters are always special
+     regardless of where they are in the pattern.
+   If this bit is not set, then special characters are special only in
+     some contexts; otherwise they are ordinary.  Specifically,
+     * + ? and intervals are only special when not after the beginning,
+     open-group, or alternation operator.  */
+#define RE_CONTEXT_INDEP_OPS (RE_CONTEXT_INDEP_ANCHORS << 1)
+
+/* If this bit is set, then *, +, ?, and { cannot be first in an re or
+     immediately after an alternation or begin-group operator.  */
+#define RE_CONTEXT_INVALID_OPS (RE_CONTEXT_INDEP_OPS << 1)
+
+/* If this bit is set, then . matches newline.
+   If not set, then it doesn't.  */
+#define RE_DOT_NEWLINE (RE_CONTEXT_INVALID_OPS << 1)
+
+/* If this bit is set, then . doesn't match NUL.
+   If not set, then it does.  */
+#define RE_DOT_NOT_NULL (RE_DOT_NEWLINE << 1)
+
+/* If this bit is set, nonmatching lists [^...] do not match newline.
+   If not set, they do.  */
+#define RE_HAT_LISTS_NOT_NEWLINE (RE_DOT_NOT_NULL << 1)
+
+/* If this bit is set, either \{...\} or {...} defines an
+     interval, depending on RE_NO_BK_BRACES.
+   If not set, \{, \}, {, and } are literals.  */
+#define RE_INTERVALS (RE_HAT_LISTS_NOT_NEWLINE << 1)
+
+/* If this bit is set, +, ? and | aren't recognized as operators.
+   If not set, they are.  */
+#define RE_LIMITED_OPS (RE_INTERVALS << 1)
+
+/* If this bit is set, newline is an alternation operator.
+   If not set, newline is literal.  */
+#define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1)
+
+/* If this bit is set, then `{...}' defines an interval, and \{ and \}
+     are literals.
+  If not set, then `\{...\}' defines an interval.  */
+#define RE_NO_BK_BRACES (RE_NEWLINE_ALT << 1)
+
+/* If this bit is set, (...) defines a group, and \( and \) are literals.
+   If not set, \(...\) defines a group, and ( and ) are literals.  */
+#define RE_NO_BK_PARENS (RE_NO_BK_BRACES << 1)
+
+/* If this bit is set, then \<digit> matches <digit>.
+   If not set, then \<digit> is a back-reference.  */
+#define RE_NO_BK_REFS (RE_NO_BK_PARENS << 1)
+
+/* If this bit is set, then | is an alternation operator, and \| is literal.
+   If not set, then \| is an alternation operator, and | is literal.  */
+#define RE_NO_BK_VBAR (RE_NO_BK_REFS << 1)
+
+/* If this bit is set, then an ending range point collating higher
+     than the starting range point, as in [z-a], is invalid.
+   If not set, then when ending range point collates higher than the
+     starting range point, the range is ignored.  */
+#define RE_NO_EMPTY_RANGES (RE_NO_BK_VBAR << 1)
+
+/* If this bit is set, then an unmatched ) is ordinary.
+   If not set, then an unmatched ) is invalid.  */
+#define RE_UNMATCHED_RIGHT_PAREN_ORD (RE_NO_EMPTY_RANGES << 1)
+
+/* If this bit is set, succeed as soon as we match the whole pattern,
+   without further backtracking.  */
+#define RE_NO_POSIX_BACKTRACKING (RE_UNMATCHED_RIGHT_PAREN_ORD << 1)
+
+/* If this bit is set, do not process the GNU regex operators.
+   If not set, then the GNU regex operators are recognized. */
+#define RE_NO_GNU_OPS (RE_NO_POSIX_BACKTRACKING << 1)
+
+/* If this bit is set, turn on internal regex debugging.
+   If not set, and debugging was on, turn it off.
+   This only works if regex.c is compiled -DDEBUG.
+   We define this bit always, so that all that's needed to turn on
+   debugging is to recompile regex.c; the calling code can always have
+   this bit set, and it won't affect anything in the normal case. */
+#define RE_DEBUG (RE_NO_GNU_OPS << 1)
+
+/* If this bit is set, a syntactically invalid interval is treated as
+   a string of ordinary characters.  For example, the ERE 'a{1' is
+   treated as 'a\{1'.  */
+#define RE_INVALID_INTERVAL_ORD (RE_DEBUG << 1)
+
+/* If this bit is set, then ignore case when matching.
+   If not set, then case is significant.  */
+#define RE_ICASE (RE_INVALID_INTERVAL_ORD << 1)
+
+/* This bit is used internally like RE_CONTEXT_INDEP_ANCHORS but only
+   for ^, because it is difficult to scan the regex backwards to find
+   whether ^ should be special.  */
+#define RE_CARET_ANCHORS_HERE (RE_ICASE << 1)
+
+/* If this bit is set, then \{ cannot be first in an bre or
+   immediately after an alternation or begin-group operator.  */
+#define RE_CONTEXT_INVALID_DUP (RE_CARET_ANCHORS_HERE << 1)
+
+/* If this bit is set, then no_sub will be set to 1 during
+   re_compile_pattern.  */
+#define RE_NO_SUB (RE_CONTEXT_INVALID_DUP << 1)
+
+/* This global variable defines the particular regexp syntax to use (for
+   some interfaces).  When a regexp is compiled, the syntax used is
+   stored in the pattern buffer, so changing this does not affect
+   already-compiled regexps.  */
+extern reg_syntax_t re_syntax_options;
+
+/* Define combinations of the above bits for the standard possibilities.
+   (The [[[ comments delimit what gets put into the Texinfo file, so
+   don't delete them!)  */
+/* [[[begin syntaxes]]] */
+#define RE_SYNTAX_EMACS 0
+
+#define RE_SYNTAX_AWK							\
+  (RE_BACKSLASH_ESCAPE_IN_LISTS   | RE_DOT_NOT_NULL			\
+   | RE_NO_BK_PARENS              | RE_NO_BK_REFS			\
+   | RE_NO_BK_VBAR                | RE_NO_EMPTY_RANGES			\
+   | RE_DOT_NEWLINE		  | RE_CONTEXT_INDEP_ANCHORS		\
+   | RE_UNMATCHED_RIGHT_PAREN_ORD | RE_NO_GNU_OPS)
+
+#define RE_SYNTAX_GNU_AWK						\
+  ((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DEBUG)	\
+   & ~(RE_DOT_NOT_NULL | RE_INTERVALS | RE_CONTEXT_INDEP_OPS		\
+       | RE_CONTEXT_INVALID_OPS ))
+
+#define RE_SYNTAX_POSIX_AWK						\
+  (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS		\
+   | RE_INTERVALS	    | RE_NO_GNU_OPS)
+
+#define RE_SYNTAX_GREP							\
+  (RE_BK_PLUS_QM              | RE_CHAR_CLASSES				\
+   | RE_HAT_LISTS_NOT_NEWLINE | RE_INTERVALS				\
+   | RE_NEWLINE_ALT)
+
+#define RE_SYNTAX_EGREP							\
+  (RE_CHAR_CLASSES        | RE_CONTEXT_INDEP_ANCHORS			\
+   | RE_CONTEXT_INDEP_OPS | RE_HAT_LISTS_NOT_NEWLINE			\
+   | RE_NEWLINE_ALT       | RE_NO_BK_PARENS				\
+   | RE_NO_BK_VBAR)
+
+#define RE_SYNTAX_POSIX_EGREP						\
+  (RE_SYNTAX_EGREP | RE_INTERVALS | RE_NO_BK_BRACES			\
+   | RE_INVALID_INTERVAL_ORD)
+
+/* P1003.2/D11.2, section 4.20.7.1, lines 5078ff.  */
+#define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC
+
+#define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC
+
+/* Syntax bits common to both basic and extended POSIX regex syntax.  */
+#define _RE_SYNTAX_POSIX_COMMON						\
+  (RE_CHAR_CLASSES | RE_DOT_NEWLINE      | RE_DOT_NOT_NULL		\
+   | RE_INTERVALS  | RE_NO_EMPTY_RANGES)
+
+#define RE_SYNTAX_POSIX_BASIC						\
+  (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM | RE_CONTEXT_INVALID_DUP)
+
+/* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes
+   RE_LIMITED_OPS, i.e., \? \+ \| are not recognized.  Actually, this
+   isn't minimal, since other operators, such as \`, aren't disabled.  */
+#define RE_SYNTAX_POSIX_MINIMAL_BASIC					\
+  (_RE_SYNTAX_POSIX_COMMON | RE_LIMITED_OPS)
+
+#define RE_SYNTAX_POSIX_EXTENDED					\
+  (_RE_SYNTAX_POSIX_COMMON  | RE_CONTEXT_INDEP_ANCHORS			\
+   | RE_CONTEXT_INDEP_OPS   | RE_NO_BK_BRACES				\
+   | RE_NO_BK_PARENS        | RE_NO_BK_VBAR				\
+   | RE_CONTEXT_INVALID_OPS | RE_UNMATCHED_RIGHT_PAREN_ORD)
+
+/* Differs from ..._POSIX_EXTENDED in that RE_CONTEXT_INDEP_OPS is
+   removed and RE_NO_BK_REFS is added.  */
+#define RE_SYNTAX_POSIX_MINIMAL_EXTENDED				\
+  (_RE_SYNTAX_POSIX_COMMON  | RE_CONTEXT_INDEP_ANCHORS			\
+   | RE_CONTEXT_INVALID_OPS | RE_NO_BK_BRACES				\
+   | RE_NO_BK_PARENS        | RE_NO_BK_REFS				\
+   | RE_NO_BK_VBAR	    | RE_UNMATCHED_RIGHT_PAREN_ORD)
+/* [[[end syntaxes]]] */
+
+/* Maximum number of duplicates an interval can allow.  Some systems
+   (erroneously) define this in other header files, but we want our
+   value, so remove any previous define.  */
+#ifdef RE_DUP_MAX
+# undef RE_DUP_MAX
+#endif
+/* If sizeof(int) == 2, then ((1 << 15) - 1) overflows.  */
+#define RE_DUP_MAX (0x7fff)
+
+
+/* POSIX `cflags' bits (i.e., information for `regcomp').  */
+
+/* If this bit is set, then use extended regular expression syntax.
+   If not set, then use basic regular expression syntax.  */
+#define REG_EXTENDED 1
+
+/* If this bit is set, then ignore case when matching.
+   If not set, then case is significant.  */
+#define REG_ICASE (REG_EXTENDED << 1)
+
+/* If this bit is set, then anchors do not match at newline
+     characters in the string.
+   If not set, then anchors do match at newlines.  */
+#define REG_NEWLINE (REG_ICASE << 1)
+
+/* If this bit is set, then report only success or fail in regexec.
+   If not set, then returns differ between not matching and errors.  */
+#define REG_NOSUB (REG_NEWLINE << 1)
+
+
+/* POSIX `eflags' bits (i.e., information for regexec).  */
+
+/* If this bit is set, then the beginning-of-line operator doesn't match
+     the beginning of the string (presumably because it's not the
+     beginning of a line).
+   If not set, then the beginning-of-line operator does match the
+     beginning of the string.  */
+#define REG_NOTBOL 1
+
+/* Like REG_NOTBOL, except for the end-of-line.  */
+#define REG_NOTEOL (1 << 1)
+
+/* Use PMATCH[0] to delimit the start and end of the search in the
+   buffer.  */
+#define REG_STARTEND (1 << 2)
+
+
+/* If any error codes are removed, changed, or added, update the
+   `re_error_msg' table in regex.c.  */
+typedef enum
+{
+#ifdef _XOPEN_SOURCE
+  REG_ENOSYS = -1,	/* This will never happen for this implementation.  */
+#endif
+
+  REG_NOERROR = 0,	/* Success.  */
+  REG_NOMATCH,		/* Didn't find a match (for regexec).  */
+
+  /* POSIX regcomp return error codes.  (In the order listed in the
+     standard.)  */
+  REG_BADPAT,		/* Invalid pattern.  */
+  REG_ECOLLATE,		/* Inalid collating element.  */
+  REG_ECTYPE,		/* Invalid character class name.  */
+  REG_EESCAPE,		/* Trailing backslash.  */
+  REG_ESUBREG,		/* Invalid back reference.  */
+  REG_EBRACK,		/* Unmatched left bracket.  */
+  REG_EPAREN,		/* Parenthesis imbalance.  */
+  REG_EBRACE,		/* Unmatched \{.  */
+  REG_BADBR,		/* Invalid contents of \{\}.  */
+  REG_ERANGE,		/* Invalid range end.  */
+  REG_ESPACE,		/* Ran out of memory.  */
+  REG_BADRPT,		/* No preceding re for repetition op.  */
+
+  /* Error codes we've added.  */
+  REG_EEND,		/* Premature end.  */
+  REG_ESIZE,		/* Compiled pattern bigger than 2^16 bytes.  */
+  REG_ERPAREN		/* Unmatched ) or \); not returned from regcomp.  */
+} reg_errcode_t;
+
+/* This data structure represents a compiled pattern.  Before calling
+   the pattern compiler, the fields `buffer', `allocated', `fastmap',
+   `translate', and `no_sub' can be set.  After the pattern has been
+   compiled, the `re_nsub' field is available.  All other fields are
+   private to the regex routines.  */
+
+#ifndef RE_TRANSLATE_TYPE
+# define RE_TRANSLATE_TYPE unsigned char *
+#endif
+
+struct re_pattern_buffer
+{
+  /* Space that holds the compiled pattern.  It is declared as
+     `unsigned char *' because its elements are sometimes used as
+     array indexes.  */
+  unsigned char *buffer;
+
+  /* Number of bytes to which `buffer' points.  */
+  unsigned long int allocated;
+
+  /* Number of bytes actually used in `buffer'.  */
+  unsigned long int used;
+
+  /* Syntax setting with which the pattern was compiled.  */
+  reg_syntax_t syntax;
+
+  /* Pointer to a fastmap, if any, otherwise zero.  re_search uses the
+     fastmap, if there is one, to skip over impossible starting points
+     for matches.  */
+  char *fastmap;
+
+  /* Either a translate table to apply to all characters before
+     comparing them, or zero for no translation.  The translation is
+     applied to a pattern when it is compiled and to a string when it
+     is matched.  */
+  RE_TRANSLATE_TYPE translate;
+
+  /* Number of subexpressions found by the compiler.  */
+  size_t re_nsub;
+
+  /* Zero if this pattern cannot match the empty string, one else.
+     Well, in truth it's used only in `re_search_2', to see whether or
+     not we should use the fastmap, so we don't set this absolutely
+     perfectly; see `re_compile_fastmap' (the `duplicate' case).  */
+  unsigned can_be_null : 1;
+
+  /* If REGS_UNALLOCATED, allocate space in the `regs' structure
+     for `max (RE_NREGS, re_nsub + 1)' groups.
+     If REGS_REALLOCATE, reallocate space if necessary.
+     If REGS_FIXED, use what's there.  */
+#define REGS_UNALLOCATED 0
+#define REGS_REALLOCATE 1
+#define REGS_FIXED 2
+  unsigned regs_allocated : 2;
+
+  /* Set to zero when `regex_compile' compiles a pattern; set to one
+     by `re_compile_fastmap' if it updates the fastmap.  */
+  unsigned fastmap_accurate : 1;
+
+  /* If set, `re_match_2' does not return information about
+     subexpressions.  */
+  unsigned no_sub : 1;
+
+  /* If set, a beginning-of-line anchor doesn't match at the beginning
+     of the string.  */
+  unsigned not_bol : 1;
+
+  /* Similarly for an end-of-line anchor.  */
+  unsigned not_eol : 1;
+
+  /* If true, an anchor at a newline matches.  */
+  unsigned newline_anchor : 1;
+};
+
+typedef struct re_pattern_buffer regex_t;
+
+/* Type for byte offsets within the string.  POSIX mandates this.  */
+typedef int regoff_t;
+
+
+/* This is the structure we store register match data in.  See
+   regex.texinfo for a full description of what registers match.  */
+struct re_registers
+{
+  unsigned num_regs;
+  regoff_t *start;
+  regoff_t *end;
+};
+
+
+/* If `regs_allocated' is REGS_UNALLOCATED in the pattern buffer,
+   `re_match_2' returns information about at least this many registers
+   the first time a `regs' structure is passed.  */
+#ifndef RE_NREGS
+# define RE_NREGS 30
+#endif
+
+
+/* POSIX specification for registers.  Aside from the different names than
+   `re_registers', POSIX uses an array of structures, instead of a
+   structure of arrays.  */
+typedef struct
+{
+  regoff_t rm_so;  /* Byte offset from string's start to substring's start.  */
+  regoff_t rm_eo;  /* Byte offset from string's start to substring's end.  */
+} regmatch_t;
+
+/* Declarations for routines.  */
+
+/* Sets the current default syntax to SYNTAX, and return the old syntax.
+   You can also simply assign to the `re_syntax_options' variable.  */
+extern reg_syntax_t re_set_syntax (reg_syntax_t __syntax);
+
+/* Compile the regular expression PATTERN, with length LENGTH
+   and syntax given by the global `re_syntax_options', into the buffer
+   BUFFER.  Return NULL if successful, and an error string if not.  */
+extern const char *re_compile_pattern (const char *__pattern, size_t __length,
+				       struct re_pattern_buffer *__buffer);
+
+
+/* Compile a fastmap for the compiled pattern in BUFFER; used to
+   accelerate searches.  Return 0 if successful and -2 if was an
+   internal error.  */
+extern int re_compile_fastmap (struct re_pattern_buffer *__buffer);
+
+
+/* Search in the string STRING (with length LENGTH) for the pattern
+   compiled into BUFFER.  Start searching at position START, for RANGE
+   characters.  Return the starting position of the match, -1 for no
+   match, or -2 for an internal error.  Also return register
+   information in REGS (if REGS and BUFFER->no_sub are nonzero).  */
+extern int re_search (struct re_pattern_buffer *__buffer, const char *__string,
+		      int __length, int __start, int __range,
+		      struct re_registers *__regs);
+
+
+/* Like `re_search', but search in the concatenation of STRING1 and
+   STRING2.  Also, stop searching at index START + STOP.  */
+extern int re_search_2 (struct re_pattern_buffer *__buffer,
+			const char *__string1, int __length1,
+			const char *__string2, int __length2, int __start,
+			int __range, struct re_registers *__regs, int __stop);
+
+
+/* Like `re_search', but return how many characters in STRING the regexp
+   in BUFFER matched, starting at position START.  */
+extern int re_match (struct re_pattern_buffer *__buffer, const char *__string,
+		     int __length, int __start, struct re_registers *__regs);
+
+
+/* Relates to `re_match' as `re_search_2' relates to `re_search'.  */
+extern int re_match_2 (struct re_pattern_buffer *__buffer,
+		       const char *__string1, int __length1,
+		       const char *__string2, int __length2, int __start,
+		       struct re_registers *__regs, int __stop);
+
+
+/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
+   ENDS.  Subsequent matches using BUFFER and REGS will use this memory
+   for recording register information.  STARTS and ENDS must be
+   allocated with malloc, and must each be at least `NUM_REGS * sizeof
+   (regoff_t)' bytes long.
+
+   If NUM_REGS == 0, then subsequent matches should allocate their own
+   register data.
+
+   Unless this function is called, the first search or match using
+   PATTERN_BUFFER will allocate its own register data, without
+   freeing the old data.  */
+extern void re_set_registers (struct re_pattern_buffer *__buffer,
+			      struct re_registers *__regs,
+			      unsigned int __num_regs,
+			      regoff_t *__starts, regoff_t *__ends);
+
+#if defined _REGEX_RE_COMP || defined _LIBC
+# ifndef _CRAY
+/* 4.2 bsd compatibility.  */
+extern char *re_comp (const char *);
+extern int re_exec (const char *);
+# endif
+#endif
+
+/* GCC 2.95 and later have "__restrict"; C99 compilers have
+   "restrict", and "configure" may have defined "restrict".  */
+#ifndef __restrict
+# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
+#  if defined restrict || 199901L <= __STDC_VERSION__
+#   define __restrict restrict
+#  else
+#   define __restrict
+#  endif
+# endif
+#endif
+/* gcc 3.1 and up support the [restrict] syntax.  */
+#ifndef __restrict_arr
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
+#  define __restrict_arr __restrict
+# else
+#  define __restrict_arr
+# endif
+#endif
+
+/* POSIX compatibility.  */
+extern int regcomp (regex_t *__restrict __preg,
+		    const char *__restrict __pattern,
+		    int __cflags);
+
+extern int regexec (const regex_t *__restrict __preg,
+		    const char *__restrict __string, size_t __nmatch,
+		    regmatch_t __pmatch[__restrict_arr],
+		    int __eflags);
+
+extern size_t regerror (int __errcode, const regex_t *__restrict __preg,
+			char *__restrict __errbuf, size_t __errbuf_size);
+
+extern void regfree (regex_t *__preg);
+
+
+#ifdef __cplusplus
+}
+#endif	/* C++ */
+
+#endif /* regex.h */
diff --git a/src/sed/lib/regex_internal.c b/src/sed/lib/regex_internal.c
new file mode 100644
index 0000000..536bf39
--- /dev/null
+++ b/src/sed/lib/regex_internal.c
@@ -0,0 +1,1643 @@
+/* Extended regular expression matching and search library.
+   Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+static void re_string_construct_common (const char *str, int len,
+					re_string_t *pstr,
+					RE_TRANSLATE_TYPE trans, int icase,
+					const re_dfa_t *dfa) internal_function;
+static re_dfastate_t *create_ci_newstate (const re_dfa_t *dfa,
+					  const re_node_set *nodes,
+					  unsigned int hash) internal_function;
+static re_dfastate_t *create_cd_newstate (const re_dfa_t *dfa,
+					  const re_node_set *nodes,
+					  unsigned int context,
+					  unsigned int hash) internal_function;
+
+/* Functions for string operation.  */
+
+/* This function allocate the buffers.  It is necessary to call
+   re_string_reconstruct before using the object.  */
+
+static reg_errcode_t
+internal_function
+re_string_allocate (re_string_t *pstr, const char *str, int len, int init_len,
+		    RE_TRANSLATE_TYPE trans, int icase, const re_dfa_t *dfa)
+{
+  reg_errcode_t ret;
+  int init_buf_len;
+
+  /* Ensure at least one character fits into the buffers.  */
+  if (init_len < dfa->mb_cur_max)
+    init_len = dfa->mb_cur_max;
+  init_buf_len = (len + 1 < init_len) ? len + 1: init_len;
+  re_string_construct_common (str, len, pstr, trans, icase, dfa);
+
+  ret = re_string_realloc_buffers (pstr, init_buf_len);
+  if (BE (ret != REG_NOERROR, 0))
+    return ret;
+
+  pstr->word_char = dfa->word_char;
+  pstr->word_ops_used = dfa->word_ops_used;
+  pstr->mbs = pstr->mbs_allocated ? pstr->mbs : (unsigned char *) str;
+  pstr->valid_len = (pstr->mbs_allocated || dfa->mb_cur_max > 1) ? 0 : len;
+  pstr->valid_raw_len = pstr->valid_len;
+  return REG_NOERROR;
+}
+
+/* This function allocate the buffers, and initialize them.  */
+
+static reg_errcode_t
+internal_function
+re_string_construct (re_string_t *pstr, const char *str, int len,
+		     RE_TRANSLATE_TYPE trans, int icase, const re_dfa_t *dfa)
+{
+  reg_errcode_t ret;
+  memset (pstr, '\0', sizeof (re_string_t));
+  re_string_construct_common (str, len, pstr, trans, icase, dfa);
+
+  if (len > 0)
+    {
+      ret = re_string_realloc_buffers (pstr, len + 1);
+      if (BE (ret != REG_NOERROR, 0))
+	return ret;
+    }
+  pstr->mbs = pstr->mbs_allocated ? pstr->mbs : (unsigned char *) str;
+
+  if (icase)
+    {
+#ifdef RE_ENABLE_I18N
+      if (dfa->mb_cur_max > 1)
+	{
+	  while (1)
+	    {
+	      ret = build_wcs_upper_buffer (pstr);
+	      if (BE (ret != REG_NOERROR, 0))
+		return ret;
+	      if (pstr->valid_raw_len >= len)
+		break;
+	      if (pstr->bufs_len > pstr->valid_len + dfa->mb_cur_max)
+		break;
+	      ret = re_string_realloc_buffers (pstr, pstr->bufs_len * 2);
+	      if (BE (ret != REG_NOERROR, 0))
+		return ret;
+	    }
+	}
+      else
+#endif /* RE_ENABLE_I18N  */
+	build_upper_buffer (pstr);
+    }
+  else
+    {
+#ifdef RE_ENABLE_I18N
+      if (dfa->mb_cur_max > 1)
+	build_wcs_buffer (pstr);
+      else
+#endif /* RE_ENABLE_I18N  */
+	{
+	  if (trans != NULL)
+	    re_string_translate_buffer (pstr);
+	  else
+	    {
+	      pstr->valid_len = pstr->bufs_len;
+	      pstr->valid_raw_len = pstr->bufs_len;
+	    }
+	}
+    }
+
+  return REG_NOERROR;
+}
+
+/* Helper functions for re_string_allocate, and re_string_construct.  */
+
+static reg_errcode_t
+internal_function
+re_string_realloc_buffers (re_string_t *pstr, int new_buf_len)
+{
+#ifdef RE_ENABLE_I18N
+  if (pstr->mb_cur_max > 1)
+    {
+      wint_t *new_wcs = re_realloc (pstr->wcs, wint_t, new_buf_len);
+      if (BE (new_wcs == NULL, 0))
+	return REG_ESPACE;
+      pstr->wcs = new_wcs;
+      if (pstr->offsets != NULL)
+	{
+	  int *new_offsets = re_realloc (pstr->offsets, int, new_buf_len);
+	  if (BE (new_offsets == NULL, 0))
+	    return REG_ESPACE;
+	  pstr->offsets = new_offsets;
+	}
+    }
+#endif /* RE_ENABLE_I18N  */
+  if (pstr->mbs_allocated)
+    {
+      unsigned char *new_mbs = re_realloc (pstr->mbs, unsigned char,
+					   new_buf_len);
+      if (BE (new_mbs == NULL, 0))
+	return REG_ESPACE;
+      pstr->mbs = new_mbs;
+    }
+  pstr->bufs_len = new_buf_len;
+  return REG_NOERROR;
+}
+
+
+static void
+internal_function
+re_string_construct_common (const char *str, int len, re_string_t *pstr,
+			    RE_TRANSLATE_TYPE trans, int icase,
+			    const re_dfa_t *dfa)
+{
+  pstr->raw_mbs = (const unsigned char *) str;
+  pstr->len = len;
+  pstr->raw_len = len;
+  pstr->trans = trans;
+  pstr->icase = icase ? 1 : 0;
+  pstr->mbs_allocated = (trans != NULL || icase);
+  pstr->mb_cur_max = dfa->mb_cur_max;
+  pstr->is_utf8 = dfa->is_utf8;
+  pstr->map_notascii = dfa->map_notascii;
+  pstr->stop = pstr->len;
+  pstr->raw_stop = pstr->stop;
+}
+
+#ifdef RE_ENABLE_I18N
+
+/* Build wide character buffer PSTR->WCS.
+   If the byte sequence of the string are:
+     <mb1>(0), <mb1>(1), <mb2>(0), <mb2>(1), <sb3>
+   Then wide character buffer will be:
+     <wc1>   , WEOF    , <wc2>   , WEOF    , <wc3>
+   We use WEOF for padding, they indicate that the position isn't
+   a first byte of a multibyte character.
+
+   Note that this function assumes PSTR->VALID_LEN elements are already
+   built and starts from PSTR->VALID_LEN.  */
+
+static void
+internal_function
+build_wcs_buffer (re_string_t *pstr)
+{
+#ifdef _LIBC
+  unsigned char buf[MB_LEN_MAX];
+  assert (MB_LEN_MAX >= pstr->mb_cur_max);
+#else
+  unsigned char buf[64];
+#endif
+  mbstate_t prev_st;
+  int byte_idx, end_idx, remain_len;
+  size_t mbclen;
+
+  /* Build the buffers from pstr->valid_len to either pstr->len or
+     pstr->bufs_len.  */
+  end_idx = (pstr->bufs_len > pstr->len) ? pstr->len : pstr->bufs_len;
+  for (byte_idx = pstr->valid_len; byte_idx < end_idx;)
+    {
+      wchar_t wc;
+      const char *p;
+
+      remain_len = end_idx - byte_idx;
+      prev_st = pstr->cur_state;
+      /* Apply the translation if we need.  */
+      if (BE (pstr->trans != NULL, 0))
+	{
+	  int i, ch;
+
+	  for (i = 0; i < pstr->mb_cur_max && i < remain_len; ++i)
+	    {
+	      ch = pstr->raw_mbs [pstr->raw_mbs_idx + byte_idx + i];
+	      buf[i] = pstr->mbs[byte_idx + i] = pstr->trans[ch];
+	    }
+	  p = (const char *) buf;
+	}
+      else
+	p = (const char *) pstr->raw_mbs + pstr->raw_mbs_idx + byte_idx;
+      mbclen = mbrtowc (&wc, p, remain_len, &pstr->cur_state);
+      if (BE (mbclen == (size_t) -2, 0))
+	{
+	  /* The buffer doesn't have enough space, finish to build.  */
+	  pstr->cur_state = prev_st;
+	  break;
+	}
+      else if (BE (mbclen == (size_t) -1 || mbclen == 0, 0))
+	{
+	  /* We treat these cases as a singlebyte character.  */
+	  mbclen = 1;
+	  wc = (wchar_t) pstr->raw_mbs[pstr->raw_mbs_idx + byte_idx];
+	  if (BE (pstr->trans != NULL, 0))
+	    wc = pstr->trans[wc];
+	  pstr->cur_state = prev_st;
+	}
+
+      /* Write wide character and padding.  */
+      pstr->wcs[byte_idx++] = wc;
+      /* Write paddings.  */
+      for (remain_len = byte_idx + mbclen - 1; byte_idx < remain_len ;)
+	pstr->wcs[byte_idx++] = WEOF;
+    }
+  pstr->valid_len = byte_idx;
+  pstr->valid_raw_len = byte_idx;
+}
+
+/* Build wide character buffer PSTR->WCS like build_wcs_buffer,
+   but for REG_ICASE.  */
+
+static int
+internal_function
+build_wcs_upper_buffer (re_string_t *pstr)
+{
+  mbstate_t prev_st;
+  int src_idx, byte_idx, end_idx, remain_len;
+  size_t mbclen;
+#ifdef _LIBC
+  char buf[MB_LEN_MAX];
+  assert (MB_LEN_MAX >= pstr->mb_cur_max);
+#else
+  char buf[64];
+#endif
+
+  byte_idx = pstr->valid_len;
+  end_idx = (pstr->bufs_len > pstr->len) ? pstr->len : pstr->bufs_len;
+
+  /* The following optimization assumes that ASCII characters can be
+     mapped to wide characters with a simple cast.  */
+  if (! pstr->map_notascii && pstr->trans == NULL && !pstr->offsets_needed)
+    {
+      while (byte_idx < end_idx)
+	{
+	  wchar_t wc;
+
+	  if (isascii (pstr->raw_mbs[pstr->raw_mbs_idx + byte_idx])
+	      && mbsinit (&pstr->cur_state))
+	    {
+	      /* In case of a singlebyte character.  */
+	      pstr->mbs[byte_idx]
+		= toupper (pstr->raw_mbs[pstr->raw_mbs_idx + byte_idx]);
+	      /* The next step uses the assumption that wchar_t is encoded
+		 ASCII-safe: all ASCII values can be converted like this.  */
+	      pstr->wcs[byte_idx] = (wchar_t) pstr->mbs[byte_idx];
+	      ++byte_idx;
+	      continue;
+	    }
+
+	  remain_len = end_idx - byte_idx;
+	  prev_st = pstr->cur_state;
+	  mbclen = mbrtowc (&wc,
+			    ((const char *) pstr->raw_mbs + pstr->raw_mbs_idx
+			     + byte_idx), remain_len, &pstr->cur_state);
+	  if (BE (mbclen + 2 > 2, 1))
+	    {
+	      wchar_t wcu = wc;
+	      if (iswlower (wc))
+		{
+		  size_t mbcdlen;
+
+		  wcu = towupper (wc);
+		  mbcdlen = wcrtomb (buf, wcu, &prev_st);
+		  if (BE (mbclen == mbcdlen, 1))
+		    memcpy (pstr->mbs + byte_idx, buf, mbclen);
+		  else
+		    {
+		      src_idx = byte_idx;
+		      goto offsets_needed;
+		    }
+		}
+	      else
+		memcpy (pstr->mbs + byte_idx,
+			pstr->raw_mbs + pstr->raw_mbs_idx + byte_idx, mbclen);
+	      pstr->wcs[byte_idx++] = wcu;
+	      /* Write paddings.  */
+	      for (remain_len = byte_idx + mbclen - 1; byte_idx < remain_len ;)
+		pstr->wcs[byte_idx++] = WEOF;
+	    }
+	  else if (mbclen == (size_t) -1 || mbclen == 0)
+	    {
+	      /* It is an invalid character or '\0'.  Just use the byte.  */
+	      int ch = pstr->raw_mbs[pstr->raw_mbs_idx + byte_idx];
+	      pstr->mbs[byte_idx] = ch;
+	      /* And also cast it to wide char.  */
+	      pstr->wcs[byte_idx++] = (wchar_t) ch;
+	      if (BE (mbclen == (size_t) -1, 0))
+		pstr->cur_state = prev_st;
+	    }
+	  else
+	    {
+	      /* The buffer doesn't have enough space, finish to build.  */
+	      pstr->cur_state = prev_st;
+	      break;
+	    }
+	}
+      pstr->valid_len = byte_idx;
+      pstr->valid_raw_len = byte_idx;
+      return REG_NOERROR;
+    }
+  else
+    for (src_idx = pstr->valid_raw_len; byte_idx < end_idx;)
+      {
+	wchar_t wc;
+	const char *p;
+      offsets_needed:
+	remain_len = end_idx - byte_idx;
+	prev_st = pstr->cur_state;
+	if (BE (pstr->trans != NULL, 0))
+	  {
+	    int i, ch;
+
+	    for (i = 0; i < pstr->mb_cur_max && i < remain_len; ++i)
+	      {
+		ch = pstr->raw_mbs [pstr->raw_mbs_idx + src_idx + i];
+		buf[i] = pstr->trans[ch];
+	      }
+	    p = (const char *) buf;
+	  }
+	else
+	  p = (const char *) pstr->raw_mbs + pstr->raw_mbs_idx + src_idx;
+	mbclen = mbrtowc (&wc, p, remain_len, &pstr->cur_state);
+	if (BE (mbclen + 2 > 2, 1))
+	  {
+	    wchar_t wcu = wc;
+	    if (iswlower (wc))
+	      {
+		size_t mbcdlen;
+
+		wcu = towupper (wc);
+		mbcdlen = wcrtomb ((char *) buf, wcu, &prev_st);
+		if (BE (mbclen == mbcdlen, 1))
+		  memcpy (pstr->mbs + byte_idx, buf, mbclen);
+		else if (mbcdlen != (size_t) -1)
+		  {
+		    size_t i;
+
+		    if (byte_idx + mbcdlen > pstr->bufs_len)
+		      {
+			pstr->cur_state = prev_st;
+			break;
+		      }
+
+		    if (pstr->offsets == NULL)
+		      {
+			pstr->offsets = re_malloc (int, pstr->bufs_len);
+
+			if (pstr->offsets == NULL)
+			  return REG_ESPACE;
+		      }
+		    if (!pstr->offsets_needed)
+		      {
+			for (i = 0; i < (size_t) byte_idx; ++i)
+			  pstr->offsets[i] = i;
+			pstr->offsets_needed = 1;
+		      }
+
+		    memcpy (pstr->mbs + byte_idx, buf, mbcdlen);
+		    pstr->wcs[byte_idx] = wcu;
+		    pstr->offsets[byte_idx] = src_idx;
+		    for (i = 1; i < mbcdlen; ++i)
+		      {
+			pstr->offsets[byte_idx + i]
+			  = src_idx + (i < mbclen ? i : mbclen - 1);
+			pstr->wcs[byte_idx + i] = WEOF;
+		      }
+		    pstr->len += mbcdlen - mbclen;
+		    if (pstr->raw_stop > src_idx)
+		      pstr->stop += mbcdlen - mbclen;
+		    end_idx = (pstr->bufs_len > pstr->len)
+			      ? pstr->len : pstr->bufs_len;
+		    byte_idx += mbcdlen;
+		    src_idx += mbclen;
+		    continue;
+		  }
+                else
+                  memcpy (pstr->mbs + byte_idx, p, mbclen);
+	      }
+	    else
+	      memcpy (pstr->mbs + byte_idx, p, mbclen);
+
+	    if (BE (pstr->offsets_needed != 0, 0))
+	      {
+		size_t i;
+		for (i = 0; i < mbclen; ++i)
+		  pstr->offsets[byte_idx + i] = src_idx + i;
+	      }
+	    src_idx += mbclen;
+
+	    pstr->wcs[byte_idx++] = wcu;
+	    /* Write paddings.  */
+	    for (remain_len = byte_idx + mbclen - 1; byte_idx < remain_len ;)
+	      pstr->wcs[byte_idx++] = WEOF;
+	  }
+	else if (mbclen == (size_t) -1 || mbclen == 0)
+	  {
+	    /* It is an invalid character or '\0'.  Just use the byte.  */
+	    int ch = pstr->raw_mbs[pstr->raw_mbs_idx + src_idx];
+
+	    if (BE (pstr->trans != NULL, 0))
+	      ch = pstr->trans [ch];
+	    pstr->mbs[byte_idx] = ch;
+
+	    if (BE (pstr->offsets_needed != 0, 0))
+	      pstr->offsets[byte_idx] = src_idx;
+	    ++src_idx;
+
+	    /* And also cast it to wide char.  */
+	    pstr->wcs[byte_idx++] = (wchar_t) ch;
+	    if (BE (mbclen == (size_t) -1, 0))
+	      pstr->cur_state = prev_st;
+	  }
+	else
+	  {
+	    /* The buffer doesn't have enough space, finish to build.  */
+	    pstr->cur_state = prev_st;
+	    break;
+	  }
+      }
+  pstr->valid_len = byte_idx;
+  pstr->valid_raw_len = src_idx;
+  return REG_NOERROR;
+}
+
+/* Skip characters until the index becomes greater than NEW_RAW_IDX.
+   Return the index.  */
+
+static int
+internal_function
+re_string_skip_chars (re_string_t *pstr, int new_raw_idx, wint_t *last_wc)
+{
+  mbstate_t prev_st;
+  int rawbuf_idx;
+  size_t mbclen;
+  wchar_t wc = 0;
+
+  /* Skip the characters which are not necessary to check.  */
+  for (rawbuf_idx = pstr->raw_mbs_idx + pstr->valid_raw_len;
+       rawbuf_idx < new_raw_idx;)
+    {
+      int remain_len;
+      remain_len = pstr->len - rawbuf_idx;
+      prev_st = pstr->cur_state;
+      mbclen = mbrtowc (&wc, (const char *) pstr->raw_mbs + rawbuf_idx,
+			remain_len, &pstr->cur_state);
+      if (BE (mbclen == (size_t) -2 || mbclen == (size_t) -1 || mbclen == 0, 0))
+	{
+	  /* We treat these cases as a singlebyte character.  */
+	  mbclen = 1;
+	  pstr->cur_state = prev_st;
+	}
+      /* Then proceed the next character.  */
+      rawbuf_idx += mbclen;
+    }
+  *last_wc = (wint_t) wc;
+  return rawbuf_idx;
+}
+#endif /* RE_ENABLE_I18N  */
+
+/* Build the buffer PSTR->MBS, and apply the translation if we need.
+   This function is used in case of REG_ICASE.  */
+
+static void
+internal_function
+build_upper_buffer (re_string_t *pstr)
+{
+  int char_idx, end_idx;
+  end_idx = (pstr->bufs_len > pstr->len) ? pstr->len : pstr->bufs_len;
+
+  for (char_idx = pstr->valid_len; char_idx < end_idx; ++char_idx)
+    {
+      int ch = pstr->raw_mbs[pstr->raw_mbs_idx + char_idx];
+      if (BE (pstr->trans != NULL, 0))
+	ch = pstr->trans[ch];
+      if (islower (ch))
+	pstr->mbs[char_idx] = toupper (ch);
+      else
+	pstr->mbs[char_idx] = ch;
+    }
+  pstr->valid_len = char_idx;
+  pstr->valid_raw_len = char_idx;
+}
+
+/* Apply TRANS to the buffer in PSTR.  */
+
+static void
+internal_function
+re_string_translate_buffer (re_string_t *pstr)
+{
+  int buf_idx, end_idx;
+  end_idx = (pstr->bufs_len > pstr->len) ? pstr->len : pstr->bufs_len;
+
+  for (buf_idx = pstr->valid_len; buf_idx < end_idx; ++buf_idx)
+    {
+      int ch = pstr->raw_mbs[pstr->raw_mbs_idx + buf_idx];
+      pstr->mbs[buf_idx] = pstr->trans[ch];
+    }
+
+  pstr->valid_len = buf_idx;
+  pstr->valid_raw_len = buf_idx;
+}
+
+/* This function re-construct the buffers.
+   Concretely, convert to wide character in case of pstr->mb_cur_max > 1,
+   convert to upper case in case of REG_ICASE, apply translation.  */
+
+static reg_errcode_t
+internal_function
+re_string_reconstruct (re_string_t *pstr, int idx, int eflags)
+{
+  int offset = idx - pstr->raw_mbs_idx;
+  if (BE (offset < 0, 0))
+    {
+      /* Reset buffer.  */
+#ifdef RE_ENABLE_I18N
+      if (pstr->mb_cur_max > 1)
+	memset (&pstr->cur_state, '\0', sizeof (mbstate_t));
+#endif /* RE_ENABLE_I18N */
+      pstr->len = pstr->raw_len;
+      pstr->stop = pstr->raw_stop;
+      pstr->valid_len = 0;
+      pstr->raw_mbs_idx = 0;
+      pstr->valid_raw_len = 0;
+      pstr->offsets_needed = 0;
+      pstr->tip_context = ((eflags & REG_NOTBOL) ? CONTEXT_BEGBUF
+			   : CONTEXT_NEWLINE | CONTEXT_BEGBUF);
+      if (!pstr->mbs_allocated)
+	pstr->mbs = (unsigned char *) pstr->raw_mbs;
+      offset = idx;
+    }
+
+  if (BE (offset != 0, 1))
+    {
+      /* Are the characters which are already checked remain?  */
+      if (BE (offset < pstr->valid_raw_len, 1)
+#ifdef RE_ENABLE_I18N
+	  /* Handling this would enlarge the code too much.
+	     Accept a slowdown in that case.  */
+	  && pstr->offsets_needed == 0
+#endif
+	 )
+	{
+	  /* Yes, move them to the front of the buffer.  */
+	  pstr->tip_context = re_string_context_at (pstr, offset - 1, eflags);
+#ifdef RE_ENABLE_I18N
+	  if (pstr->mb_cur_max > 1)
+	    memmove (pstr->wcs, pstr->wcs + offset,
+		     (pstr->valid_len - offset) * sizeof (wint_t));
+#endif /* RE_ENABLE_I18N */
+	  if (BE (pstr->mbs_allocated, 0))
+	    memmove (pstr->mbs, pstr->mbs + offset,
+		     pstr->valid_len - offset);
+	  pstr->valid_len -= offset;
+	  pstr->valid_raw_len -= offset;
+#if DEBUG
+	  assert (pstr->valid_len > 0);
+#endif
+	}
+      else
+	{
+	  /* No, skip all characters until IDX.  */
+#ifdef RE_ENABLE_I18N
+	  if (BE (pstr->offsets_needed, 0))
+	    {
+	      pstr->len = pstr->raw_len - idx + offset;
+	      pstr->stop = pstr->raw_stop - idx + offset;
+	      pstr->offsets_needed = 0;
+	    }
+#endif
+	  pstr->valid_len = 0;
+	  pstr->valid_raw_len = 0;
+#ifdef RE_ENABLE_I18N
+	  if (pstr->mb_cur_max > 1)
+	    {
+	      int wcs_idx;
+	      wint_t wc = WEOF;
+
+	      if (pstr->is_utf8)
+		{
+		  const unsigned char *raw, *p, *q, *end;
+
+		  /* Special case UTF-8.  Multi-byte chars start with any
+		     byte other than 0x80 - 0xbf.  */
+		  raw = pstr->raw_mbs + pstr->raw_mbs_idx;
+		  end = raw + (offset - pstr->mb_cur_max);
+		  p = raw + offset - 1;
+#ifdef _LIBC
+		  /* We know the wchar_t encoding is UCS4, so for the simple
+		     case, ASCII characters, skip the conversion step.  */
+		  if (isascii (*p) && BE (pstr->trans == NULL, 1))
+		    {
+		      memset (&pstr->cur_state, '\0', sizeof (mbstate_t));
+		      pstr->valid_len = 0;
+		      wc = (wchar_t) *p;
+		    }
+		  else
+#endif
+		    for (; p >= end; --p)
+		      if ((*p & 0xc0) != 0x80)
+			{
+			  mbstate_t cur_state;
+			  wchar_t wc2;
+			  int mlen = raw + pstr->len - p;
+			  unsigned char buf[6];
+			  size_t mbclen;
+
+			  q = p;
+			  if (BE (pstr->trans != NULL, 0))
+			    {
+			      int i = mlen < 6 ? mlen : 6;
+			      while (--i >= 0)
+				buf[i] = pstr->trans[p[i]];
+			      q = buf;
+			    }
+			  /* XXX Don't use mbrtowc, we know which conversion
+			     to use (UTF-8 -> UCS4).  */
+			  memset (&cur_state, 0, sizeof (cur_state));
+			  mbclen = mbrtowc (&wc2, (const char *) p, mlen,
+					    &cur_state);
+			  if (raw + offset - p <= mbclen
+			      && mbclen < (size_t) -2)
+			    {
+			      memset (&pstr->cur_state, '\0',
+				      sizeof (mbstate_t));
+			      pstr->valid_len = mbclen - (raw + offset - p);
+			      wc = wc2;
+			    }
+			  break;
+			}
+		}
+
+	      if (wc == WEOF)
+		pstr->valid_len = re_string_skip_chars (pstr, idx, &wc) - idx;
+	      if (BE (pstr->valid_len, 0))
+		{
+		  for (wcs_idx = 0; wcs_idx < pstr->valid_len; ++wcs_idx)
+		    pstr->wcs[wcs_idx] = WEOF;
+		  if (pstr->mbs_allocated)
+		    memset (pstr->mbs, 255, pstr->valid_len);
+		}
+	      pstr->valid_raw_len = pstr->valid_len;
+	      pstr->tip_context = ((BE (pstr->word_ops_used != 0, 0)
+				    && IS_WIDE_WORD_CHAR (wc))
+				   ? CONTEXT_WORD
+				   : ((IS_WIDE_NEWLINE (wc)
+				       && pstr->newline_anchor)
+				      ? CONTEXT_NEWLINE : 0));
+	    }
+	  else
+#endif /* RE_ENABLE_I18N */
+	    {
+	      int c = pstr->raw_mbs[pstr->raw_mbs_idx + offset - 1];
+	      if (pstr->trans)
+		c = pstr->trans[c];
+	      pstr->tip_context = (bitset_contain (pstr->word_char, c)
+				   ? CONTEXT_WORD
+				   : ((IS_NEWLINE (c) && pstr->newline_anchor)
+				      ? CONTEXT_NEWLINE : 0));
+	    }
+	}
+      if (!BE (pstr->mbs_allocated, 0))
+	pstr->mbs += offset;
+    }
+  pstr->raw_mbs_idx = idx;
+  pstr->len -= offset;
+  pstr->stop -= offset;
+
+  /* Then build the buffers.  */
+#ifdef RE_ENABLE_I18N
+  if (pstr->mb_cur_max > 1)
+    {
+      if (pstr->icase)
+	{
+	  int ret = build_wcs_upper_buffer (pstr);
+	  if (BE (ret != REG_NOERROR, 0))
+	    return ret;
+	}
+      else
+	build_wcs_buffer (pstr);
+    }
+  else
+#endif /* RE_ENABLE_I18N */
+    if (BE (pstr->mbs_allocated, 0))
+      {
+	if (pstr->icase)
+	  build_upper_buffer (pstr);
+	else if (pstr->trans != NULL)
+	  re_string_translate_buffer (pstr);
+      }
+    else
+      pstr->valid_len = pstr->len;
+
+  pstr->cur_idx = 0;
+  return REG_NOERROR;
+}
+
+static unsigned char
+internal_function __attribute ((pure))
+re_string_peek_byte_case (const re_string_t *pstr, int idx)
+{
+  int ch, off;
+
+  /* Handle the common (easiest) cases first.  */
+  if (BE (!pstr->mbs_allocated, 1))
+    return re_string_peek_byte (pstr, idx);
+
+#ifdef RE_ENABLE_I18N
+  if (pstr->mb_cur_max > 1
+      && ! re_string_is_single_byte_char (pstr, pstr->cur_idx + idx))
+    return re_string_peek_byte (pstr, idx);
+#endif
+
+  off = pstr->cur_idx + idx;
+#ifdef RE_ENABLE_I18N
+  if (pstr->offsets_needed)
+    off = pstr->offsets[off];
+#endif
+
+  ch = pstr->raw_mbs[pstr->raw_mbs_idx + off];
+
+#ifdef RE_ENABLE_I18N
+  /* Ensure that e.g. for tr_TR.UTF-8 BACKSLASH DOTLESS SMALL LETTER I
+     this function returns CAPITAL LETTER I instead of first byte of
+     DOTLESS SMALL LETTER I.  The latter would confuse the parser,
+     since peek_byte_case doesn't advance cur_idx in any way.  */
+  if (pstr->offsets_needed && !isascii (ch))
+    return re_string_peek_byte (pstr, idx);
+#endif
+
+  return ch;
+}
+
+static unsigned char
+internal_function
+re_string_fetch_byte_case (re_string_t *pstr)
+{
+  if (BE (!pstr->mbs_allocated, 1))
+    return re_string_fetch_byte (pstr);
+
+#ifdef RE_ENABLE_I18N
+  if (pstr->offsets_needed)
+    {
+      int off, ch;
+
+      /* For tr_TR.UTF-8 [[:islower:]] there is
+	 [[: CAPITAL LETTER I WITH DOT lower:]] in mbs.  Skip
+	 in that case the whole multi-byte character and return
+	 the original letter.  On the other side, with
+	 [[: DOTLESS SMALL LETTER I return [[:I, as doing
+	 anything else would complicate things too much.  */
+
+      if (!re_string_first_byte (pstr, pstr->cur_idx))
+	return re_string_fetch_byte (pstr);
+
+      off = pstr->offsets[pstr->cur_idx];
+      ch = pstr->raw_mbs[pstr->raw_mbs_idx + off];
+
+      if (! isascii (ch))
+	return re_string_fetch_byte (pstr);
+
+      re_string_skip_bytes (pstr,
+			    re_string_char_size_at (pstr, pstr->cur_idx));
+      return ch;
+    }
+#endif
+
+  return pstr->raw_mbs[pstr->raw_mbs_idx + pstr->cur_idx++];
+}
+
+static void
+internal_function
+re_string_destruct (re_string_t *pstr)
+{
+#ifdef RE_ENABLE_I18N
+  re_free (pstr->wcs);
+  re_free (pstr->offsets);
+#endif /* RE_ENABLE_I18N  */
+  if (pstr->mbs_allocated)
+    re_free (pstr->mbs);
+}
+
+/* Return the context at IDX in INPUT.  */
+
+static unsigned int
+internal_function
+re_string_context_at (const re_string_t *input, int idx, int eflags)
+{
+  int c;
+  if (BE (idx < 0, 0))
+    /* In this case, we use the value stored in input->tip_context,
+       since we can't know the character in input->mbs[-1] here.  */
+    return input->tip_context;
+  if (BE (idx == input->len, 0))
+    return ((eflags & REG_NOTEOL) ? CONTEXT_ENDBUF
+	    : CONTEXT_NEWLINE | CONTEXT_ENDBUF);
+#ifdef RE_ENABLE_I18N
+  if (input->mb_cur_max > 1)
+    {
+      wint_t wc;
+      int wc_idx = idx;
+      while(input->wcs[wc_idx] == WEOF)
+	{
+#ifdef DEBUG
+	  /* It must not happen.  */
+	  assert (wc_idx >= 0);
+#endif
+	  --wc_idx;
+	  if (wc_idx < 0)
+	    return input->tip_context;
+	}
+      wc = input->wcs[wc_idx];
+      if (BE (input->word_ops_used != 0, 0) && IS_WIDE_WORD_CHAR (wc))
+	return CONTEXT_WORD;
+      return (IS_WIDE_NEWLINE (wc) && input->newline_anchor
+	      ? CONTEXT_NEWLINE : 0);
+    }
+  else
+#endif
+    {
+      c = re_string_byte_at (input, idx);
+      if (bitset_contain (input->word_char, c))
+	return CONTEXT_WORD;
+      return IS_NEWLINE (c) && input->newline_anchor ? CONTEXT_NEWLINE : 0;
+    }
+}
+
+/* Functions for set operation.  */
+
+static reg_errcode_t
+internal_function
+re_node_set_alloc (re_node_set *set, int size)
+{
+  set->alloc = size;
+  set->nelem = 0;
+  set->elems = re_malloc (int, size);
+  if (BE (set->elems == NULL, 0))
+    return REG_ESPACE;
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+internal_function
+re_node_set_init_1 (re_node_set *set, int elem)
+{
+  set->alloc = 1;
+  set->nelem = 1;
+  set->elems = re_malloc (int, 1);
+  if (BE (set->elems == NULL, 0))
+    {
+      set->alloc = set->nelem = 0;
+      return REG_ESPACE;
+    }
+  set->elems[0] = elem;
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+internal_function
+re_node_set_init_2 (re_node_set *set, int elem1, int elem2)
+{
+  set->alloc = 2;
+  set->elems = re_malloc (int, 2);
+  if (BE (set->elems == NULL, 0))
+    return REG_ESPACE;
+  if (elem1 == elem2)
+    {
+      set->nelem = 1;
+      set->elems[0] = elem1;
+    }
+  else
+    {
+      set->nelem = 2;
+      if (elem1 < elem2)
+	{
+	  set->elems[0] = elem1;
+	  set->elems[1] = elem2;
+	}
+      else
+	{
+	  set->elems[0] = elem2;
+	  set->elems[1] = elem1;
+	}
+    }
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+internal_function
+re_node_set_init_copy (re_node_set *dest, const re_node_set *src)
+{
+  dest->nelem = src->nelem;
+  if (src->nelem > 0)
+    {
+      dest->alloc = dest->nelem;
+      dest->elems = re_malloc (int, dest->alloc);
+      if (BE (dest->elems == NULL, 0))
+	{
+	  dest->alloc = dest->nelem = 0;
+	  return REG_ESPACE;
+	}
+      memcpy (dest->elems, src->elems, src->nelem * sizeof (int));
+    }
+  else
+    re_node_set_init_empty (dest);
+  return REG_NOERROR;
+}
+
+/* Calculate the intersection of the sets SRC1 and SRC2. And merge it to
+   DEST. Return value indicate the error code or REG_NOERROR if succeeded.
+   Note: We assume dest->elems is NULL, when dest->alloc is 0.  */
+
+static reg_errcode_t
+internal_function
+re_node_set_add_intersect (re_node_set *dest, const re_node_set *src1,
+			   const re_node_set *src2)
+{
+  int i1, i2, is, id, delta, sbase;
+  if (src1->nelem == 0 || src2->nelem == 0)
+    return REG_NOERROR;
+
+  /* We need dest->nelem + 2 * elems_in_intersection; this is a
+     conservative estimate.  */
+  if (src1->nelem + src2->nelem + dest->nelem > dest->alloc)
+    {
+      int new_alloc = src1->nelem + src2->nelem + dest->alloc;
+      int *new_elems = re_realloc (dest->elems, int, new_alloc);
+      if (BE (new_elems == NULL, 0))
+        return REG_ESPACE;
+      dest->elems = new_elems;
+      dest->alloc = new_alloc;
+    }
+
+  /* Find the items in the intersection of SRC1 and SRC2, and copy
+     into the top of DEST those that are not already in DEST itself.  */
+  sbase = dest->nelem + src1->nelem + src2->nelem;
+  i1 = src1->nelem - 1;
+  i2 = src2->nelem - 1;
+  id = dest->nelem - 1;
+  for (;;)
+    {
+      if (src1->elems[i1] == src2->elems[i2])
+	{
+	  /* Try to find the item in DEST.  Maybe we could binary search?  */
+	  while (id >= 0 && dest->elems[id] > src1->elems[i1])
+	    --id;
+
+          if (id < 0 || dest->elems[id] != src1->elems[i1])
+            dest->elems[--sbase] = src1->elems[i1];
+
+	  if (--i1 < 0 || --i2 < 0)
+	    break;
+	}
+
+      /* Lower the highest of the two items.  */
+      else if (src1->elems[i1] < src2->elems[i2])
+	{
+	  if (--i2 < 0)
+	    break;
+	}
+      else
+	{
+	  if (--i1 < 0)
+	    break;
+	}
+    }
+
+  id = dest->nelem - 1;
+  is = dest->nelem + src1->nelem + src2->nelem - 1;
+  delta = is - sbase + 1;
+
+  /* Now copy.  When DELTA becomes zero, the remaining
+     DEST elements are already in place; this is more or
+     less the same loop that is in re_node_set_merge.  */
+  dest->nelem += delta;
+  if (delta > 0 && id >= 0)
+    for (;;)
+      {
+        if (dest->elems[is] > dest->elems[id])
+          {
+            /* Copy from the top.  */
+            dest->elems[id + delta--] = dest->elems[is--];
+            if (delta == 0)
+              break;
+          }
+        else
+          {
+            /* Slide from the bottom.  */
+            dest->elems[id + delta] = dest->elems[id];
+            if (--id < 0)
+              break;
+          }
+      }
+
+  /* Copy remaining SRC elements.  */
+  memcpy (dest->elems, dest->elems + sbase, delta * sizeof (int));
+
+  return REG_NOERROR;
+}
+
+/* Calculate the union set of the sets SRC1 and SRC2. And store it to
+   DEST. Return value indicate the error code or REG_NOERROR if succeeded.  */
+
+static reg_errcode_t
+internal_function
+re_node_set_init_union (re_node_set *dest, const re_node_set *src1,
+			const re_node_set *src2)
+{
+  int i1, i2, id;
+  if (src1 != NULL && src1->nelem > 0 && src2 != NULL && src2->nelem > 0)
+    {
+      dest->alloc = src1->nelem + src2->nelem;
+      dest->elems = re_malloc (int, dest->alloc);
+      if (BE (dest->elems == NULL, 0))
+	return REG_ESPACE;
+    }
+  else
+    {
+      if (src1 != NULL && src1->nelem > 0)
+	return re_node_set_init_copy (dest, src1);
+      else if (src2 != NULL && src2->nelem > 0)
+	return re_node_set_init_copy (dest, src2);
+      else
+	re_node_set_init_empty (dest);
+      return REG_NOERROR;
+    }
+  for (i1 = i2 = id = 0 ; i1 < src1->nelem && i2 < src2->nelem ;)
+    {
+      if (src1->elems[i1] > src2->elems[i2])
+	{
+	  dest->elems[id++] = src2->elems[i2++];
+	  continue;
+	}
+      if (src1->elems[i1] == src2->elems[i2])
+	++i2;
+      dest->elems[id++] = src1->elems[i1++];
+    }
+  if (i1 < src1->nelem)
+    {
+      memcpy (dest->elems + id, src1->elems + i1,
+	     (src1->nelem - i1) * sizeof (int));
+      id += src1->nelem - i1;
+    }
+  else if (i2 < src2->nelem)
+    {
+      memcpy (dest->elems + id, src2->elems + i2,
+	     (src2->nelem - i2) * sizeof (int));
+      id += src2->nelem - i2;
+    }
+  dest->nelem = id;
+  return REG_NOERROR;
+}
+
+/* Calculate the union set of the sets DEST and SRC. And store it to
+   DEST. Return value indicate the error code or REG_NOERROR if succeeded.  */
+
+static reg_errcode_t
+internal_function
+re_node_set_merge (re_node_set *dest, const re_node_set *src)
+{
+  int is, id, sbase, delta;
+  if (src == NULL || src->nelem == 0)
+    return REG_NOERROR;
+  if (dest->alloc < 2 * src->nelem + dest->nelem)
+    {
+      int new_alloc = 2 * (src->nelem + dest->alloc);
+      int *new_buffer = re_realloc (dest->elems, int, new_alloc);
+      if (BE (new_buffer == NULL, 0))
+	return REG_ESPACE;
+      dest->elems = new_buffer;
+      dest->alloc = new_alloc;
+    }
+
+  if (BE (dest->nelem == 0, 0))
+    {
+      dest->nelem = src->nelem;
+      memcpy (dest->elems, src->elems, src->nelem * sizeof (int));
+      return REG_NOERROR;
+    }
+
+  /* Copy into the top of DEST the items of SRC that are not
+     found in DEST.  Maybe we could binary search in DEST?  */
+  for (sbase = dest->nelem + 2 * src->nelem,
+       is = src->nelem - 1, id = dest->nelem - 1; is >= 0 && id >= 0; )
+    {
+      if (dest->elems[id] == src->elems[is])
+        is--, id--;
+      else if (dest->elems[id] < src->elems[is])
+        dest->elems[--sbase] = src->elems[is--];
+      else /* if (dest->elems[id] > src->elems[is]) */
+        --id;
+    }
+
+  if (is >= 0)
+    {
+      /* If DEST is exhausted, the remaining items of SRC must be unique.  */
+      sbase -= is + 1;
+      memcpy (dest->elems + sbase, src->elems, (is + 1) * sizeof (int));
+    }
+
+  id = dest->nelem - 1;
+  is = dest->nelem + 2 * src->nelem - 1;
+  delta = is - sbase + 1;
+  if (delta == 0)
+    return REG_NOERROR;
+
+  /* Now copy.  When DELTA becomes zero, the remaining
+     DEST elements are already in place.  */
+  dest->nelem += delta;
+  for (;;)
+    {
+      if (dest->elems[is] > dest->elems[id])
+        {
+	  /* Copy from the top.  */
+          dest->elems[id + delta--] = dest->elems[is--];
+	  if (delta == 0)
+	    break;
+	}
+      else
+        {
+          /* Slide from the bottom.  */
+          dest->elems[id + delta] = dest->elems[id];
+	  if (--id < 0)
+	    {
+	      /* Copy remaining SRC elements.  */
+	      memcpy (dest->elems, dest->elems + sbase,
+	              delta * sizeof (int));
+	      break;
+	    }
+	}
+    }
+
+  return REG_NOERROR;
+}
+
+/* Insert the new element ELEM to the re_node_set* SET.
+   SET should not already have ELEM.
+   return -1 if an error is occured, return 1 otherwise.  */
+
+static int
+internal_function
+re_node_set_insert (re_node_set *set, int elem)
+{
+  int idx;
+  /* In case the set is empty.  */
+  if (set->alloc == 0)
+    {
+      if (BE (re_node_set_init_1 (set, elem) == REG_NOERROR, 1))
+	return 1;
+      else
+	return -1;
+    }
+
+  if (BE (set->nelem, 0) == 0)
+    {
+      /* We already guaranteed above that set->alloc != 0.  */
+      set->elems[0] = elem;
+      ++set->nelem;
+      return 1;
+    }
+
+  /* Realloc if we need.  */
+  if (set->alloc == set->nelem)
+    {
+      int *new_elems;
+      set->alloc = set->alloc * 2;
+      new_elems = re_realloc (set->elems, int, set->alloc);
+      if (BE (new_elems == NULL, 0))
+	return -1;
+      set->elems = new_elems;
+    }
+
+  /* Move the elements which follows the new element.  Test the
+     first element separately to skip a check in the inner loop.  */
+  if (elem < set->elems[0])
+    {
+      idx = 0;
+      for (idx = set->nelem; idx > 0; idx--)
+        set->elems[idx] = set->elems[idx - 1];
+    }
+  else
+    {
+      for (idx = set->nelem; set->elems[idx - 1] > elem; idx--)
+        set->elems[idx] = set->elems[idx - 1];
+    }
+
+  /* Insert the new element.  */
+  set->elems[idx] = elem;
+  ++set->nelem;
+  return 1;
+}
+
+/* Insert the new element ELEM to the re_node_set* SET.
+   SET should not already have any element greater than or equal to ELEM.
+   Return -1 if an error is occured, return 1 otherwise.  */
+
+static int
+internal_function
+re_node_set_insert_last (re_node_set *set, int elem)
+{
+  /* Realloc if we need.  */
+  if (set->alloc == set->nelem)
+    {
+      int *new_elems;
+      set->alloc = (set->alloc + 1) * 2;
+      new_elems = re_realloc (set->elems, int, set->alloc);
+      if (BE (new_elems == NULL, 0))
+	return -1;
+      set->elems = new_elems;
+    }
+
+  /* Insert the new element.  */
+  set->elems[set->nelem++] = elem;
+  return 1;
+}
+
+/* Compare two node sets SET1 and SET2.
+   return 1 if SET1 and SET2 are equivalent, return 0 otherwise.  */
+
+static int
+internal_function __attribute ((pure))
+re_node_set_compare (const re_node_set *set1, const re_node_set *set2)
+{
+  int i;
+  if (set1 == NULL || set2 == NULL || set1->nelem != set2->nelem)
+    return 0;
+  for (i = set1->nelem ; --i >= 0 ; )
+    if (set1->elems[i] != set2->elems[i])
+      return 0;
+  return 1;
+}
+
+/* Return (idx + 1) if SET contains the element ELEM, return 0 otherwise.  */
+
+static int
+internal_function __attribute ((pure))
+re_node_set_contains (const re_node_set *set, int elem)
+{
+  unsigned int idx, right, mid;
+  if (set->nelem <= 0)
+    return 0;
+
+  /* Binary search the element.  */
+  idx = 0;
+  right = set->nelem - 1;
+  while (idx < right)
+    {
+      mid = (idx + right) / 2;
+      if (set->elems[mid] < elem)
+	idx = mid + 1;
+      else
+	right = mid;
+    }
+  return set->elems[idx] == elem ? idx + 1 : 0;
+}
+
+static void
+internal_function
+re_node_set_remove_at (re_node_set *set, int idx)
+{
+  if (idx < 0 || idx >= set->nelem)
+    return;
+  --set->nelem;
+  for (; idx < set->nelem; idx++)
+    set->elems[idx] = set->elems[idx + 1];
+}
+
+
+/* Add the token TOKEN to dfa->nodes, and return the index of the token.
+   Or return -1, if an error will be occured.  */
+
+static int
+internal_function
+re_dfa_add_node (re_dfa_t *dfa, re_token_t token)
+{
+  int type = token.type;
+  if (BE (dfa->nodes_len >= dfa->nodes_alloc, 0))
+    {
+      size_t new_nodes_alloc = dfa->nodes_alloc * 2;
+      int *new_nexts, *new_indices;
+      re_node_set *new_edests, *new_eclosures;
+      re_token_t *new_nodes;
+
+      /* Avoid overflows.  */
+      if (BE (new_nodes_alloc < dfa->nodes_alloc, 0))
+	return -1;
+
+      new_nodes = re_realloc (dfa->nodes, re_token_t, new_nodes_alloc);
+      if (BE (new_nodes == NULL, 0))
+	return -1;
+      dfa->nodes = new_nodes;
+      new_nexts = re_realloc (dfa->nexts, int, new_nodes_alloc);
+      new_indices = re_realloc (dfa->org_indices, int, new_nodes_alloc);
+      new_edests = re_realloc (dfa->edests, re_node_set, new_nodes_alloc);
+      new_eclosures = re_realloc (dfa->eclosures, re_node_set, new_nodes_alloc);
+      if (BE (new_nexts == NULL || new_indices == NULL
+	      || new_edests == NULL || new_eclosures == NULL, 0))
+	return -1;
+      dfa->nexts = new_nexts;
+      dfa->org_indices = new_indices;
+      dfa->edests = new_edests;
+      dfa->eclosures = new_eclosures;
+      dfa->nodes_alloc = new_nodes_alloc;
+    }
+  dfa->nodes[dfa->nodes_len] = token;
+  dfa->nodes[dfa->nodes_len].constraint = 0;
+#ifdef RE_ENABLE_I18N
+  dfa->nodes[dfa->nodes_len].accept_mb =
+    (type == OP_PERIOD && dfa->mb_cur_max > 1) || type == COMPLEX_BRACKET;
+#endif
+  dfa->nexts[dfa->nodes_len] = -1;
+  re_node_set_init_empty (dfa->edests + dfa->nodes_len);
+  re_node_set_init_empty (dfa->eclosures + dfa->nodes_len);
+  return dfa->nodes_len++;
+}
+
+static inline unsigned int
+internal_function
+calc_state_hash (const re_node_set *nodes, unsigned int context)
+{
+  unsigned int hash = nodes->nelem + context;
+  int i;
+  for (i = 0 ; i < nodes->nelem ; i++)
+    hash += nodes->elems[i];
+  return hash;
+}
+
+/* Search for the state whose node_set is equivalent to NODES.
+   Return the pointer to the state, if we found it in the DFA.
+   Otherwise create the new one and return it.  In case of an error
+   return NULL and set the error code in ERR.
+   Note: - We assume NULL as the invalid state, then it is possible that
+	   return value is NULL and ERR is REG_NOERROR.
+	 - We never return non-NULL value in case of any errors, it is for
+	   optimization.  */
+
+static re_dfastate_t *
+internal_function
+re_acquire_state (reg_errcode_t *err, const re_dfa_t *dfa,
+		  const re_node_set *nodes)
+{
+  unsigned int hash;
+  re_dfastate_t *new_state;
+  struct re_state_table_entry *spot;
+  int i;
+  if (BE (nodes->nelem == 0, 0))
+    {
+      *err = REG_NOERROR;
+      return NULL;
+    }
+  hash = calc_state_hash (nodes, 0);
+  spot = dfa->state_table + (hash & dfa->state_hash_mask);
+
+  for (i = 0 ; i < spot->num ; i++)
+    {
+      re_dfastate_t *state = spot->array[i];
+      if (hash != state->hash)
+	continue;
+      if (re_node_set_compare (&state->nodes, nodes))
+	return state;
+    }
+
+  /* There are no appropriate state in the dfa, create the new one.  */
+  new_state = create_ci_newstate (dfa, nodes, hash);
+  if (BE (new_state == NULL, 0))
+    *err = REG_ESPACE;
+
+  return new_state;
+}
+
+/* Search for the state whose node_set is equivalent to NODES and
+   whose context is equivalent to CONTEXT.
+   Return the pointer to the state, if we found it in the DFA.
+   Otherwise create the new one and return it.  In case of an error
+   return NULL and set the error code in ERR.
+   Note: - We assume NULL as the invalid state, then it is possible that
+	   return value is NULL and ERR is REG_NOERROR.
+	 - We never return non-NULL value in case of any errors, it is for
+	   optimization.  */
+
+static re_dfastate_t *
+internal_function
+re_acquire_state_context (reg_errcode_t *err, const re_dfa_t *dfa,
+			  const re_node_set *nodes, unsigned int context)
+{
+  unsigned int hash;
+  re_dfastate_t *new_state;
+  struct re_state_table_entry *spot;
+  int i;
+  if (nodes->nelem == 0)
+    {
+      *err = REG_NOERROR;
+      return NULL;
+    }
+  hash = calc_state_hash (nodes, context);
+  spot = dfa->state_table + (hash & dfa->state_hash_mask);
+
+  for (i = 0 ; i < spot->num ; i++)
+    {
+      re_dfastate_t *state = spot->array[i];
+      if (state->hash == hash
+	  && state->context == context
+	  && re_node_set_compare (state->entrance_nodes, nodes))
+	return state;
+    }
+  /* There are no appropriate state in `dfa', create the new one.  */
+  new_state = create_cd_newstate (dfa, nodes, context, hash);
+  if (BE (new_state == NULL, 0))
+    *err = REG_ESPACE;
+
+  return new_state;
+}
+
+/* Finish initialization of the new state NEWSTATE, and using its hash value
+   HASH put in the appropriate bucket of DFA's state table.  Return value
+   indicates the error code if failed.  */
+
+static reg_errcode_t
+register_state (const re_dfa_t *dfa, re_dfastate_t *newstate,
+		unsigned int hash)
+{
+  struct re_state_table_entry *spot;
+  reg_errcode_t err;
+  int i;
+
+  newstate->hash = hash;
+  err = re_node_set_alloc (&newstate->non_eps_nodes, newstate->nodes.nelem);
+  if (BE (err != REG_NOERROR, 0))
+    return REG_ESPACE;
+  for (i = 0; i < newstate->nodes.nelem; i++)
+    {
+      int elem = newstate->nodes.elems[i];
+      if (!IS_EPSILON_NODE (dfa->nodes[elem].type))
+        re_node_set_insert_last (&newstate->non_eps_nodes, elem);
+    }
+
+  spot = dfa->state_table + (hash & dfa->state_hash_mask);
+  if (BE (spot->alloc <= spot->num, 0))
+    {
+      int new_alloc = 2 * spot->num + 2;
+      re_dfastate_t **new_array = re_realloc (spot->array, re_dfastate_t *,
+					      new_alloc);
+      if (BE (new_array == NULL, 0))
+	return REG_ESPACE;
+      spot->array = new_array;
+      spot->alloc = new_alloc;
+    }
+  spot->array[spot->num++] = newstate;
+  return REG_NOERROR;
+}
+
+static void
+free_state (re_dfastate_t *state)
+{
+  re_node_set_free (&state->non_eps_nodes);
+  re_node_set_free (&state->inveclosure);
+  if (state->entrance_nodes != &state->nodes)
+    {
+      re_node_set_free (state->entrance_nodes);
+      re_free (state->entrance_nodes);
+    }
+  re_node_set_free (&state->nodes);
+  re_free (state->word_trtable);
+  re_free (state->trtable);
+  re_free (state);
+}
+
+/* Create the new state which is independ of contexts.
+   Return the new state if succeeded, otherwise return NULL.  */
+
+static re_dfastate_t *
+internal_function
+create_ci_newstate (const re_dfa_t *dfa, const re_node_set *nodes,
+		    unsigned int hash)
+{
+  int i;
+  reg_errcode_t err;
+  re_dfastate_t *newstate;
+
+  newstate = (re_dfastate_t *) calloc (sizeof (re_dfastate_t), 1);
+  if (BE (newstate == NULL, 0))
+    return NULL;
+  err = re_node_set_init_copy (&newstate->nodes, nodes);
+  if (BE (err != REG_NOERROR, 0))
+    {
+      re_free (newstate);
+      return NULL;
+    }
+
+  newstate->entrance_nodes = &newstate->nodes;
+  for (i = 0 ; i < nodes->nelem ; i++)
+    {
+      re_token_t *node = dfa->nodes + nodes->elems[i];
+      re_token_type_t type = node->type;
+      if (type == CHARACTER && !node->constraint)
+	continue;
+#ifdef RE_ENABLE_I18N
+      newstate->accept_mb |= node->accept_mb;
+#endif /* RE_ENABLE_I18N */
+
+      /* If the state has the halt node, the state is a halt state.  */
+      if (type == END_OF_RE)
+	newstate->halt = 1;
+      else if (type == OP_BACK_REF)
+	newstate->has_backref = 1;
+      else if (type == ANCHOR || node->constraint)
+	newstate->has_constraint = 1;
+    }
+  err = register_state (dfa, newstate, hash);
+  if (BE (err != REG_NOERROR, 0))
+    {
+      free_state (newstate);
+      newstate = NULL;
+    }
+  return newstate;
+}
+
+/* Create the new state which is depend on the context CONTEXT.
+   Return the new state if succeeded, otherwise return NULL.  */
+
+static re_dfastate_t *
+internal_function
+create_cd_newstate (const re_dfa_t *dfa, const re_node_set *nodes,
+		    unsigned int context, unsigned int hash)
+{
+  int i, nctx_nodes = 0;
+  reg_errcode_t err;
+  re_dfastate_t *newstate;
+
+  newstate = (re_dfastate_t *) calloc (sizeof (re_dfastate_t), 1);
+  if (BE (newstate == NULL, 0))
+    return NULL;
+  err = re_node_set_init_copy (&newstate->nodes, nodes);
+  if (BE (err != REG_NOERROR, 0))
+    {
+      re_free (newstate);
+      return NULL;
+    }
+
+  newstate->context = context;
+  newstate->entrance_nodes = &newstate->nodes;
+
+  for (i = 0 ; i < nodes->nelem ; i++)
+    {
+      unsigned int constraint = 0;
+      re_token_t *node = dfa->nodes + nodes->elems[i];
+      re_token_type_t type = node->type;
+      if (node->constraint)
+	constraint = node->constraint;
+
+      if (type == CHARACTER && !constraint)
+	continue;
+#ifdef RE_ENABLE_I18N
+      newstate->accept_mb |= node->accept_mb;
+#endif /* RE_ENABLE_I18N */
+
+      /* If the state has the halt node, the state is a halt state.  */
+      if (type == END_OF_RE)
+	newstate->halt = 1;
+      else if (type == OP_BACK_REF)
+	newstate->has_backref = 1;
+      else if (type == ANCHOR)
+	constraint = node->opr.ctx_type;
+
+      if (constraint)
+	{
+	  if (newstate->entrance_nodes == &newstate->nodes)
+	    {
+	      newstate->entrance_nodes = re_malloc (re_node_set, 1);
+	      if (BE (newstate->entrance_nodes == NULL, 0))
+		{
+		  free_state (newstate);
+		  return NULL;
+		}
+	      re_node_set_init_copy (newstate->entrance_nodes, nodes);
+	      nctx_nodes = 0;
+	      newstate->has_constraint = 1;
+	    }
+
+	  if (NOT_SATISFY_PREV_CONSTRAINT (constraint,context))
+	    {
+	      re_node_set_remove_at (&newstate->nodes, i - nctx_nodes);
+	      ++nctx_nodes;
+	    }
+	}
+    }
+  err = register_state (dfa, newstate, hash);
+  if (BE (err != REG_NOERROR, 0))
+    {
+      free_state (newstate);
+      newstate = NULL;
+    }
+  return  newstate;
+}
diff --git a/src/sed/lib/regex_internal.h b/src/sed/lib/regex_internal.h
new file mode 100644
index 0000000..7ab79e7
--- /dev/null
+++ b/src/sed/lib/regex_internal.h
@@ -0,0 +1,779 @@
+/* Extended regular expression matching and search library.
+   Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _REGEX_INTERNAL_H
+#define _REGEX_INTERNAL_H 1
+
+#include <assert.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if defined HAVE_LANGINFO_H || defined HAVE_LANGINFO_CODESET || defined _LIBC
+# include <langinfo.h>
+#endif
+#if defined HAVE_LOCALE_H || defined _LIBC
+# include <locale.h>
+#endif
+#if defined HAVE_WCHAR_H || defined _LIBC
+# include <wchar.h>
+#endif /* HAVE_WCHAR_H || _LIBC */
+#if defined HAVE_WCTYPE_H || defined _LIBC
+# include <wctype.h>
+#endif /* HAVE_WCTYPE_H || _LIBC */
+#if defined HAVE_STDBOOL_H || defined _LIBC || defined(__HAIKU__) /* haiku hack */
+# include <stdbool.h>
+#endif /* HAVE_STDBOOL_H || _LIBC */
+#if defined _LIBC
+# include <bits/libc-lock.h>
+#else
+# define __libc_lock_define(CLASS,NAME)
+# define __libc_lock_init(NAME) do { } while (0)
+# define __libc_lock_lock(NAME) do { } while (0)
+# define __libc_lock_unlock(NAME) do { } while (0)
+#endif
+
+/* In case that the system doesn't have isblank().  */
+#if !defined _LIBC && !defined HAVE_ISBLANK && !defined isblank
+# define isblank(ch) ((ch) == ' ' || (ch) == '\t')
+#endif
+
+#ifdef _LIBC
+# ifndef _RE_DEFINE_LOCALE_FUNCTIONS
+#  define _RE_DEFINE_LOCALE_FUNCTIONS 1
+#   include <locale/localeinfo.h>
+#   include <locale/elem-hash.h>
+#   include <locale/coll-lookup.h>
+# endif
+#endif
+
+/* This is for other GNU distributions with internationalized messages.  */
+#if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC
+# include <libintl.h>
+# ifdef _LIBC
+#  undef gettext
+#  define gettext(msgid) \
+  INTUSE(__dcgettext) (_libc_intl_domainname, msgid, LC_MESSAGES)
+# endif
+#else
+# define gettext(msgid) (msgid)
+#endif
+
+#ifndef gettext_noop
+/* This define is so xgettext can find the internationalizable
+   strings.  */
+# define gettext_noop(String) String
+#endif
+
+#if (defined MB_CUR_MAX && HAVE_LOCALE_H && HAVE_WCTYPE_H && HAVE_WCHAR_H && HAVE_WCRTOMB && HAVE_MBRTOWC && HAVE_WCSCOLL) || _LIBC
+# if defined(__OS2__) /* setlocale() misbehaves in LIBC 0.6.1 and earlier, breaking /[a-z]/. */
+#  if defined(__KLIBC_VERSION__)
+#   if __KLIBC_VERSION__ >= 0x00060002
+#    define RE_ENABLE_I18N
+#   endif
+#  endif
+# else
+# define RE_ENABLE_I18N
+# endif
+#endif
+
+#if __GNUC__ >= 3
+# define BE(expr, val) __builtin_expect (expr, val)
+#else
+# define BE(expr, val) (expr)
+# ifndef inline /* bird: silly since the rest of sed depends on this working.. */
+#  define inline
+# endif
+#endif
+
+/* Number of single byte character.  */
+#define SBC_MAX 256
+
+#define COLL_ELEM_LEN_MAX 8
+
+/* The character which represents newline.  */
+#define NEWLINE_CHAR '\n'
+#define WIDE_NEWLINE_CHAR L'\n'
+
+/* Rename to standard API for using out of glibc.  */
+#ifndef _LIBC
+# define __wctype wctype
+# define __iswctype iswctype
+# define __btowc btowc
+# ifndef __mempcpy /* keep quiet if string.h defines it (bird) */
+# define __mempcpy mempcpy
+# endif
+# define __wcrtomb wcrtomb
+# define __regfree regfree
+# define attribute_hidden
+#endif /* not _LIBC */
+
+#ifdef __GNUC__
+# define __attribute(arg) __attribute__ (arg)
+#else
+# define __attribute(arg)
+#endif
+
+#ifndef SIZE_MAX
+#define SIZE_MAX ((size_t)-1)
+#endif
+
+extern const char __re_error_msgid[] attribute_hidden;
+extern const size_t __re_error_msgid_idx[] attribute_hidden;
+
+/* An integer used to represent a set of bits.  It must be unsigned,
+   and must be at least as wide as unsigned int.  */
+typedef unsigned long int bitset_word_t;
+/* All bits set in a bitset_word_t.  */
+#define BITSET_WORD_MAX ULONG_MAX
+/* Number of bits in a bitset_word_t.  */
+#define BITSET_WORD_BITS (sizeof (bitset_word_t) * CHAR_BIT)
+/* Number of bitset_word_t in a bit_set.  */
+#define BITSET_WORDS (SBC_MAX / BITSET_WORD_BITS)
+typedef bitset_word_t bitset_t[BITSET_WORDS];
+typedef bitset_word_t *re_bitset_ptr_t;
+typedef const bitset_word_t *re_const_bitset_ptr_t;
+
+#define bitset_set(set,i) \
+  (set[i / BITSET_WORD_BITS] |= (bitset_word_t) 1 << i % BITSET_WORD_BITS)
+#define bitset_clear(set,i) \
+  (set[i / BITSET_WORD_BITS] &= ~((bitset_word_t) 1 << i % BITSET_WORD_BITS))
+#define bitset_contain(set,i) \
+  (set[i / BITSET_WORD_BITS] & ((bitset_word_t) 1 << i % BITSET_WORD_BITS))
+#define bitset_empty(set) memset (set, '\0', sizeof (bitset_t))
+#define bitset_set_all(set) memset (set, '\xff', sizeof (bitset_t))
+#define bitset_copy(dest,src) memcpy (dest, src, sizeof (bitset_t))
+
+#define PREV_WORD_CONSTRAINT 0x0001
+#define PREV_NOTWORD_CONSTRAINT 0x0002
+#define NEXT_WORD_CONSTRAINT 0x0004
+#define NEXT_NOTWORD_CONSTRAINT 0x0008
+#define PREV_NEWLINE_CONSTRAINT 0x0010
+#define NEXT_NEWLINE_CONSTRAINT 0x0020
+#define PREV_BEGBUF_CONSTRAINT 0x0040
+#define NEXT_ENDBUF_CONSTRAINT 0x0080
+#define WORD_DELIM_CONSTRAINT 0x0100
+#define NOT_WORD_DELIM_CONSTRAINT 0x0200
+
+typedef enum
+{
+  INSIDE_WORD = PREV_WORD_CONSTRAINT | NEXT_WORD_CONSTRAINT,
+  WORD_FIRST = PREV_NOTWORD_CONSTRAINT | NEXT_WORD_CONSTRAINT,
+  WORD_LAST = PREV_WORD_CONSTRAINT | NEXT_NOTWORD_CONSTRAINT,
+  INSIDE_NOTWORD = PREV_NOTWORD_CONSTRAINT | NEXT_NOTWORD_CONSTRAINT,
+  LINE_FIRST = PREV_NEWLINE_CONSTRAINT,
+  LINE_LAST = NEXT_NEWLINE_CONSTRAINT,
+  BUF_FIRST = PREV_BEGBUF_CONSTRAINT,
+  BUF_LAST = NEXT_ENDBUF_CONSTRAINT,
+  WORD_DELIM = WORD_DELIM_CONSTRAINT,
+  NOT_WORD_DELIM = NOT_WORD_DELIM_CONSTRAINT
+} re_context_type;
+
+typedef struct
+{
+  int alloc;
+  int nelem;
+  int *elems;
+} re_node_set;
+
+typedef enum
+{
+  NON_TYPE = 0,
+
+  /* Node type, These are used by token, node, tree.  */
+  CHARACTER = 1,
+  END_OF_RE = 2,
+  SIMPLE_BRACKET = 3,
+  OP_BACK_REF = 4,
+  OP_PERIOD = 5,
+#ifdef RE_ENABLE_I18N
+  COMPLEX_BRACKET = 6,
+  OP_UTF8_PERIOD = 7,
+#endif /* RE_ENABLE_I18N */
+
+  /* We define EPSILON_BIT as a macro so that OP_OPEN_SUBEXP is used
+     when the debugger shows values of this enum type.  */
+#define EPSILON_BIT 8
+  OP_OPEN_SUBEXP = EPSILON_BIT | 0,
+  OP_CLOSE_SUBEXP = EPSILON_BIT | 1,
+  OP_ALT = EPSILON_BIT | 2,
+  OP_DUP_ASTERISK = EPSILON_BIT | 3,
+  ANCHOR = EPSILON_BIT | 4,
+
+  /* Tree type, these are used only by tree. */
+  CONCAT = 16,
+  SUBEXP = 17,
+
+  /* Token type, these are used only by token.  */
+  OP_DUP_PLUS = 18,
+  OP_DUP_QUESTION,
+  OP_OPEN_BRACKET,
+  OP_CLOSE_BRACKET,
+  OP_CHARSET_RANGE,
+  OP_OPEN_DUP_NUM,
+  OP_CLOSE_DUP_NUM,
+  OP_NON_MATCH_LIST,
+  OP_OPEN_COLL_ELEM,
+  OP_CLOSE_COLL_ELEM,
+  OP_OPEN_EQUIV_CLASS,
+  OP_CLOSE_EQUIV_CLASS,
+  OP_OPEN_CHAR_CLASS,
+  OP_CLOSE_CHAR_CLASS,
+  OP_WORD,
+  OP_NOTWORD,
+  OP_SPACE,
+  OP_NOTSPACE,
+  BACK_SLASH
+
+} re_token_type_t;
+
+#ifdef RE_ENABLE_I18N
+typedef struct
+{
+  /* Multibyte characters.  */
+  wchar_t *mbchars;
+
+  /* Collating symbols.  */
+# ifdef _LIBC
+  int32_t *coll_syms;
+# endif
+
+  /* Equivalence classes. */
+# ifdef _LIBC
+  int32_t *equiv_classes;
+# endif
+
+  /* Range expressions. */
+# ifdef _LIBC
+  uint32_t *range_starts;
+  uint32_t *range_ends;
+# else /* not _LIBC */
+  wchar_t *range_starts;
+  wchar_t *range_ends;
+# endif /* not _LIBC */
+
+  /* Character classes. */
+  wctype_t *char_classes;
+
+  /* If this character set is the non-matching list.  */
+  unsigned int non_match : 1;
+
+  /* # of multibyte characters.  */
+  int nmbchars;
+
+  /* # of collating symbols.  */
+  int ncoll_syms;
+
+  /* # of equivalence classes. */
+  int nequiv_classes;
+
+  /* # of range expressions. */
+  int nranges;
+
+  /* # of character classes. */
+  int nchar_classes;
+} re_charset_t;
+#endif /* RE_ENABLE_I18N */
+
+typedef struct
+{
+  union
+  {
+    unsigned char c;		/* for CHARACTER */
+    re_bitset_ptr_t sbcset;	/* for SIMPLE_BRACKET */
+#ifdef RE_ENABLE_I18N
+    re_charset_t *mbcset;	/* for COMPLEX_BRACKET */
+#endif /* RE_ENABLE_I18N */
+    int idx;			/* for BACK_REF */
+    re_context_type ctx_type;	/* for ANCHOR */
+  } opr;
+#if __GNUC__ >= 2
+  re_token_type_t type : 8;
+#else
+  re_token_type_t type;
+#endif
+  unsigned int constraint : 10;	/* context constraint */
+  unsigned int duplicated : 1;
+  unsigned int opt_subexp : 1;
+#ifdef RE_ENABLE_I18N
+  unsigned int accept_mb : 1;
+  /* These 2 bits can be moved into the union if needed (e.g. if running out
+     of bits; move opr.c to opr.c.c and move the flags to opr.c.flags).  */
+  unsigned int mb_partial : 1;
+#endif
+  unsigned int word_char : 1;
+} re_token_t;
+
+#define IS_EPSILON_NODE(type) ((type) & EPSILON_BIT)
+
+struct re_string_t
+{
+  /* Indicate the raw buffer which is the original string passed as an
+     argument of regexec(), re_search(), etc..  */
+  const unsigned char *raw_mbs;
+  /* Store the multibyte string.  In case of "case insensitive mode" like
+     REG_ICASE, upper cases of the string are stored, otherwise MBS points
+     the same address that RAW_MBS points.  */
+  unsigned char *mbs;
+#ifdef RE_ENABLE_I18N
+  /* Store the wide character string which is corresponding to MBS.  */
+  wint_t *wcs;
+  int *offsets;
+  mbstate_t cur_state;
+#endif
+  /* Index in RAW_MBS.  Each character mbs[i] corresponds to
+     raw_mbs[raw_mbs_idx + i].  */
+  int raw_mbs_idx;
+  /* The length of the valid characters in the buffers.  */
+  int valid_len;
+  /* The corresponding number of bytes in raw_mbs array.  */
+  int valid_raw_len;
+  /* The length of the buffers MBS and WCS.  */
+  int bufs_len;
+  /* The index in MBS, which is updated by re_string_fetch_byte.  */
+  int cur_idx;
+  /* length of RAW_MBS array.  */
+  int raw_len;
+  /* This is RAW_LEN - RAW_MBS_IDX + VALID_LEN - VALID_RAW_LEN.  */
+  int len;
+  /* End of the buffer may be shorter than its length in the cases such
+     as re_match_2, re_search_2.  Then, we use STOP for end of the buffer
+     instead of LEN.  */
+  int raw_stop;
+  /* This is RAW_STOP - RAW_MBS_IDX adjusted through OFFSETS.  */
+  int stop;
+
+  /* The context of mbs[0].  We store the context independently, since
+     the context of mbs[0] may be different from raw_mbs[0], which is
+     the beginning of the input string.  */
+  unsigned int tip_context;
+  /* The translation passed as a part of an argument of re_compile_pattern.  */
+  RE_TRANSLATE_TYPE trans;
+  /* Copy of re_dfa_t's word_char.  */
+  re_const_bitset_ptr_t word_char;
+  /* 1 if REG_ICASE.  */
+  unsigned char icase;
+  unsigned char is_utf8;
+  unsigned char map_notascii;
+  unsigned char mbs_allocated;
+  unsigned char offsets_needed;
+  unsigned char newline_anchor;
+  unsigned char word_ops_used;
+  int mb_cur_max;
+};
+typedef struct re_string_t re_string_t;
+
+
+struct re_dfa_t;
+typedef struct re_dfa_t re_dfa_t;
+
+#ifndef _LIBC
+# ifdef __i386__
+#  ifdef __OS2__
+#   define internal_function   __attribute ((regparm (3)))
+#  else
+#   define internal_function   __attribute ((regparm (3), stdcall))
+#  endif
+# else
+#  define internal_function
+# endif
+#endif
+
+static reg_errcode_t re_string_realloc_buffers (re_string_t *pstr,
+						int new_buf_len)
+     internal_function;
+#ifdef RE_ENABLE_I18N
+static void build_wcs_buffer (re_string_t *pstr) internal_function;
+static int build_wcs_upper_buffer (re_string_t *pstr) internal_function;
+#endif /* RE_ENABLE_I18N */
+static void build_upper_buffer (re_string_t *pstr) internal_function;
+static void re_string_translate_buffer (re_string_t *pstr) internal_function;
+static unsigned int re_string_context_at (const re_string_t *input, int idx,
+					  int eflags)
+     internal_function __attribute ((pure));
+#define re_string_peek_byte(pstr, offset) \
+  ((pstr)->mbs[(pstr)->cur_idx + offset])
+#define re_string_fetch_byte(pstr) \
+  ((pstr)->mbs[(pstr)->cur_idx++])
+#define re_string_first_byte(pstr, idx) \
+  ((idx) == (pstr)->valid_len || (pstr)->wcs[idx] != WEOF)
+#define re_string_is_single_byte_char(pstr, idx) \
+  ((pstr)->wcs[idx] != WEOF && ((pstr)->valid_len == (idx) + 1 \
+				|| (pstr)->wcs[(idx) + 1] != WEOF))
+#define re_string_eoi(pstr) ((pstr)->stop <= (pstr)->cur_idx)
+#define re_string_cur_idx(pstr) ((pstr)->cur_idx)
+#define re_string_get_buffer(pstr) ((pstr)->mbs)
+#define re_string_length(pstr) ((pstr)->len)
+#define re_string_byte_at(pstr,idx) ((pstr)->mbs[idx])
+#define re_string_skip_bytes(pstr,idx) ((pstr)->cur_idx += (idx))
+#define re_string_set_index(pstr,idx) ((pstr)->cur_idx = (idx))
+
+#if HAVE_ALLOCA_H
+# include <alloca.h>
+#elif HAVE_MALLOC_H
+# include <malloc.h>
+#endif
+
+#ifndef _LIBC
+# if HAVE_ALLOCA
+/* The OS usually guarantees only one guard page at the bottom of the stack,
+   and a page size can be as small as 4096 bytes.  So we cannot safely
+   allocate anything larger than 4096 bytes.  Also care for the possibility
+   of a few compiler-allocated temporary stack slots.  */
+#  define __libc_use_alloca(n) ((n) < 4032)
+# else
+/* alloca is implemented with malloc, so just use malloc.  */
+#  define __libc_use_alloca(n) 0
+# endif
+#endif
+
+#define re_malloc(t,n) ((t *) malloc ((n) * sizeof (t)))
+#define re_realloc(p,t,n) ((t *) realloc (p, (n) * sizeof (t)))
+#define re_free(p) free (p)
+
+struct bin_tree_t
+{
+  struct bin_tree_t *parent;
+  struct bin_tree_t *left;
+  struct bin_tree_t *right;
+  struct bin_tree_t *first;
+  struct bin_tree_t *next;
+
+  re_token_t token;
+
+  /* `node_idx' is the index in dfa->nodes, if `type' == 0.
+     Otherwise `type' indicate the type of this node.  */
+  int node_idx;
+};
+typedef struct bin_tree_t bin_tree_t;
+
+#define BIN_TREE_STORAGE_SIZE \
+  ((1024 - sizeof (void *)) / sizeof (bin_tree_t))
+
+struct bin_tree_storage_t
+{
+  struct bin_tree_storage_t *next;
+  bin_tree_t data[BIN_TREE_STORAGE_SIZE];
+};
+typedef struct bin_tree_storage_t bin_tree_storage_t;
+
+#define CONTEXT_WORD 1
+#define CONTEXT_NEWLINE (CONTEXT_WORD << 1)
+#define CONTEXT_BEGBUF (CONTEXT_NEWLINE << 1)
+#define CONTEXT_ENDBUF (CONTEXT_BEGBUF << 1)
+
+#define IS_WORD_CONTEXT(c) ((c) & CONTEXT_WORD)
+#define IS_NEWLINE_CONTEXT(c) ((c) & CONTEXT_NEWLINE)
+#define IS_BEGBUF_CONTEXT(c) ((c) & CONTEXT_BEGBUF)
+#define IS_ENDBUF_CONTEXT(c) ((c) & CONTEXT_ENDBUF)
+#define IS_ORDINARY_CONTEXT(c) ((c) == 0)
+
+#define IS_WORD_CHAR(ch) (isalnum (ch) || (ch) == '_')
+#define IS_NEWLINE(ch) ((ch) == NEWLINE_CHAR)
+#define IS_WIDE_WORD_CHAR(ch) (iswalnum (ch) || (ch) == L'_')
+#define IS_WIDE_NEWLINE(ch) ((ch) == WIDE_NEWLINE_CHAR)
+
+#define NOT_SATISFY_PREV_CONSTRAINT(constraint,context) \
+ ((((constraint) & PREV_WORD_CONSTRAINT) && !IS_WORD_CONTEXT (context)) \
+  || ((constraint & PREV_NOTWORD_CONSTRAINT) && IS_WORD_CONTEXT (context)) \
+  || ((constraint & PREV_NEWLINE_CONSTRAINT) && !IS_NEWLINE_CONTEXT (context))\
+  || ((constraint & PREV_BEGBUF_CONSTRAINT) && !IS_BEGBUF_CONTEXT (context)))
+
+#define NOT_SATISFY_NEXT_CONSTRAINT(constraint,context) \
+ ((((constraint) & NEXT_WORD_CONSTRAINT) && !IS_WORD_CONTEXT (context)) \
+  || (((constraint) & NEXT_NOTWORD_CONSTRAINT) && IS_WORD_CONTEXT (context)) \
+  || (((constraint) & NEXT_NEWLINE_CONSTRAINT) && !IS_NEWLINE_CONTEXT (context)) \
+  || (((constraint) & NEXT_ENDBUF_CONSTRAINT) && !IS_ENDBUF_CONTEXT (context)))
+
+struct re_dfastate_t
+{
+  unsigned int hash;
+  re_node_set nodes;
+  re_node_set non_eps_nodes;
+  re_node_set inveclosure;
+  re_node_set *entrance_nodes;
+  struct re_dfastate_t **trtable, **word_trtable;
+  unsigned int context : 4;
+  unsigned int halt : 1;
+  /* If this state can accept `multi byte'.
+     Note that we refer to multibyte characters, and multi character
+     collating elements as `multi byte'.  */
+  unsigned int accept_mb : 1;
+  /* If this state has backreference node(s).  */
+  unsigned int has_backref : 1;
+  unsigned int has_constraint : 1;
+};
+typedef struct re_dfastate_t re_dfastate_t;
+
+struct re_state_table_entry
+{
+  int num;
+  int alloc;
+  re_dfastate_t **array;
+};
+
+/* Array type used in re_sub_match_last_t and re_sub_match_top_t.  */
+
+typedef struct
+{
+  int next_idx;
+  int alloc;
+  re_dfastate_t **array;
+} state_array_t;
+
+/* Store information about the node NODE whose type is OP_CLOSE_SUBEXP.  */
+
+typedef struct
+{
+  int node;
+  int str_idx; /* The position NODE match at.  */
+  state_array_t path;
+} re_sub_match_last_t;
+
+/* Store information about the node NODE whose type is OP_OPEN_SUBEXP.
+   And information about the node, whose type is OP_CLOSE_SUBEXP,
+   corresponding to NODE is stored in LASTS.  */
+
+typedef struct
+{
+  int str_idx;
+  int node;
+  state_array_t *path;
+  int alasts; /* Allocation size of LASTS.  */
+  int nlasts; /* The number of LASTS.  */
+  re_sub_match_last_t **lasts;
+} re_sub_match_top_t;
+
+struct re_backref_cache_entry
+{
+  int node;
+  int str_idx;
+  int subexp_from;
+  int subexp_to;
+  char more;
+  char unused;
+  unsigned short int eps_reachable_subexps_map;
+};
+
+typedef struct
+{
+  /* The string object corresponding to the input string.  */
+  re_string_t input;
+#if defined _LIBC || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
+  const re_dfa_t *const dfa;
+#else
+  const re_dfa_t *dfa;
+#endif
+  /* EFLAGS of the argument of regexec.  */
+  int eflags;
+  /* Where the matching ends.  */
+  int match_last;
+  int last_node;
+  /* The state log used by the matcher.  */
+  re_dfastate_t **state_log;
+  int state_log_top;
+  /* Back reference cache.  */
+  int nbkref_ents;
+  int abkref_ents;
+  struct re_backref_cache_entry *bkref_ents;
+  int max_mb_elem_len;
+  int nsub_tops;
+  int asub_tops;
+  re_sub_match_top_t **sub_tops;
+} re_match_context_t;
+
+typedef struct
+{
+  re_dfastate_t **sifted_states;
+  re_dfastate_t **limited_states;
+  int last_node;
+  int last_str_idx;
+  re_node_set limits;
+} re_sift_context_t;
+
+struct re_fail_stack_ent_t
+{
+  int idx;
+  int node;
+  regmatch_t *regs;
+  re_node_set eps_via_nodes;
+};
+
+struct re_fail_stack_t
+{
+  int num;
+  int alloc;
+  struct re_fail_stack_ent_t *stack;
+};
+
+struct re_dfa_t
+{
+  re_token_t *nodes;
+  size_t nodes_alloc;
+  size_t nodes_len;
+  int *nexts;
+  int *org_indices;
+  re_node_set *edests;
+  re_node_set *eclosures;
+  re_node_set *inveclosures;
+  struct re_state_table_entry *state_table;
+  re_dfastate_t *init_state;
+  re_dfastate_t *init_state_word;
+  re_dfastate_t *init_state_nl;
+  re_dfastate_t *init_state_begbuf;
+  bin_tree_t *str_tree;
+  bin_tree_storage_t *str_tree_storage;
+  re_bitset_ptr_t sb_char;
+  int str_tree_storage_idx;
+
+  /* number of subexpressions `re_nsub' is in regex_t.  */
+  unsigned int state_hash_mask;
+  int init_node;
+  int nbackref; /* The number of backreference in this dfa.  */
+
+  /* Bitmap expressing which backreference is used.  */
+  bitset_word_t used_bkref_map;
+  bitset_word_t completed_bkref_map;
+
+  unsigned int has_plural_match : 1;
+  /* If this dfa has "multibyte node", which is a backreference or
+     a node which can accept multibyte character or multi character
+     collating element.  */
+  unsigned int has_mb_node : 1;
+  unsigned int is_utf8 : 1;
+  unsigned int map_notascii : 1;
+  unsigned int word_ops_used : 1;
+  int mb_cur_max;
+  bitset_t word_char;
+  reg_syntax_t syntax;
+  int *subexp_map;
+#ifdef DEBUG
+  char* re_str;
+#endif
+  __libc_lock_define (, lock)
+};
+
+#define re_node_set_init_empty(set) memset (set, '\0', sizeof (re_node_set))
+#define re_node_set_remove(set,id) \
+  (re_node_set_remove_at (set, re_node_set_contains (set, id) - 1))
+#define re_node_set_empty(p) ((p)->nelem = 0)
+#define re_node_set_free(set) re_free ((set)->elems)
+
+
+typedef enum
+{
+  SB_CHAR,
+  MB_CHAR,
+  EQUIV_CLASS,
+  COLL_SYM,
+  CHAR_CLASS
+} bracket_elem_type;
+
+typedef struct
+{
+  bracket_elem_type type;
+  union
+  {
+    unsigned char ch;
+    unsigned char *name;
+    wchar_t wch;
+  } opr;
+} bracket_elem_t;
+
+
+/* Inline functions for bitset operation.  */
+static inline void
+bitset_not (bitset_t set)
+{
+  int bitset_i;
+  for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i)
+    set[bitset_i] = ~set[bitset_i];
+}
+
+static inline void
+bitset_merge (bitset_t dest, const bitset_t src)
+{
+  int bitset_i;
+  for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i)
+    dest[bitset_i] |= src[bitset_i];
+}
+
+static inline void
+bitset_mask (bitset_t dest, const bitset_t src)
+{
+  int bitset_i;
+  for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i)
+    dest[bitset_i] &= src[bitset_i];
+}
+
+#ifdef RE_ENABLE_I18N
+/* Inline functions for re_string.  */
+static inline int
+internal_function __attribute ((pure))
+re_string_char_size_at (const re_string_t *pstr, int idx)
+{
+  int byte_idx;
+  if (pstr->mb_cur_max == 1)
+    return 1;
+  for (byte_idx = 1; idx + byte_idx < pstr->valid_len; ++byte_idx)
+    if (pstr->wcs[idx + byte_idx] != WEOF)
+      break;
+  return byte_idx;
+}
+
+static inline wint_t
+internal_function __attribute ((pure))
+re_string_wchar_at (const re_string_t *pstr, int idx)
+{
+  if (pstr->mb_cur_max == 1)
+    return (wint_t) pstr->mbs[idx];
+  return (wint_t) pstr->wcs[idx];
+}
+
+static int
+internal_function __attribute ((pure))
+re_string_elem_size_at (const re_string_t *pstr, int idx)
+{
+# ifdef _LIBC
+  const unsigned char *p, *extra;
+  const int32_t *table, *indirect;
+  int32_t tmp;
+#  include <locale/weight.h>
+  uint_fast32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
+
+  if (nrules != 0)
+    {
+      table = (const int32_t *) _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
+      extra = (const unsigned char *)
+	_NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAMB);
+      indirect = (const int32_t *) _NL_CURRENT (LC_COLLATE,
+						_NL_COLLATE_INDIRECTMB);
+      p = pstr->mbs + idx;
+      tmp = findidx (&p);
+      return p - pstr->mbs - idx;
+    }
+  else
+# endif /* _LIBC */
+    return 1;
+}
+#endif /* RE_ENABLE_I18N */
+
+#endif /*  _REGEX_INTERNAL_H */
diff --git a/src/sed/lib/regexec.c b/src/sed/lib/regexec.c
new file mode 100644
index 0000000..8c5e296
--- /dev/null
+++ b/src/sed/lib/regexec.c
@@ -0,0 +1,4333 @@
+/* Extended regular expression matching and search library.
+   Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+static reg_errcode_t match_ctx_init (re_match_context_t *cache, int eflags,
+				     int n) internal_function;
+static void match_ctx_clean (re_match_context_t *mctx) internal_function;
+static void match_ctx_free (re_match_context_t *cache) internal_function;
+static reg_errcode_t match_ctx_add_entry (re_match_context_t *cache, int node,
+					  int str_idx, int from, int to)
+     internal_function;
+static int search_cur_bkref_entry (const re_match_context_t *mctx, int str_idx)
+     internal_function;
+static reg_errcode_t match_ctx_add_subtop (re_match_context_t *mctx, int node,
+					   int str_idx) internal_function;
+static re_sub_match_last_t * match_ctx_add_sublast (re_sub_match_top_t *subtop,
+						   int node, int str_idx)
+     internal_function;
+static void sift_ctx_init (re_sift_context_t *sctx, re_dfastate_t **sifted_sts,
+			   re_dfastate_t **limited_sts, int last_node,
+			   int last_str_idx)
+     internal_function;
+static reg_errcode_t re_search_internal (const regex_t *preg,
+					 const char *string, int length,
+					 int start, int range, int stop,
+					 size_t nmatch, regmatch_t pmatch[],
+					 int eflags) internal_function;
+static int re_search_2_stub (struct re_pattern_buffer *bufp,
+			     const char *string1, int length1,
+			     const char *string2, int length2,
+			     int start, int range, struct re_registers *regs,
+			     int stop, int ret_len) internal_function;
+static int re_search_stub (struct re_pattern_buffer *bufp,
+			   const char *string, int length, int start,
+			   int range, int stop, struct re_registers *regs,
+			   int ret_len) internal_function;
+static unsigned re_copy_regs (struct re_registers *regs, regmatch_t *pmatch,
+			      int nregs, int regs_allocated) internal_function;
+static reg_errcode_t prune_impossible_nodes (re_match_context_t *mctx)
+     internal_function;
+static int check_matching (re_match_context_t *mctx, int fl_longest_match,
+			   int *p_match_first) internal_function;
+static int check_halt_state_context (const re_match_context_t *mctx,
+				     const re_dfastate_t *state, int idx)
+     internal_function;
+static void update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
+			 regmatch_t *prev_idx_match, int cur_node,
+			 int cur_idx, int nmatch) internal_function;
+static reg_errcode_t push_fail_stack (struct re_fail_stack_t *fs,
+				      int str_idx, int dest_node, int nregs,
+				      regmatch_t *regs,
+				      re_node_set *eps_via_nodes)
+     internal_function;
+static reg_errcode_t set_regs (const regex_t *preg,
+			       const re_match_context_t *mctx,
+			       size_t nmatch, regmatch_t *pmatch,
+			       int fl_backtrack) internal_function;
+static reg_errcode_t free_fail_stack_return (struct re_fail_stack_t *fs)
+     internal_function;
+
+#ifdef RE_ENABLE_I18N
+static int sift_states_iter_mb (const re_match_context_t *mctx,
+				re_sift_context_t *sctx,
+				int node_idx, int str_idx, int max_str_idx)
+     internal_function;
+#endif /* RE_ENABLE_I18N */
+static reg_errcode_t sift_states_backward (const re_match_context_t *mctx,
+					   re_sift_context_t *sctx)
+     internal_function;
+static reg_errcode_t build_sifted_states (const re_match_context_t *mctx,
+					  re_sift_context_t *sctx, int str_idx,
+					  re_node_set *cur_dest)
+     internal_function;
+static reg_errcode_t update_cur_sifted_state (const re_match_context_t *mctx,
+					      re_sift_context_t *sctx,
+					      int str_idx,
+					      re_node_set *dest_nodes)
+     internal_function;
+static reg_errcode_t add_epsilon_src_nodes (const re_dfa_t *dfa,
+					    re_node_set *dest_nodes,
+					    const re_node_set *candidates)
+     internal_function;
+static int check_dst_limits (const re_match_context_t *mctx,
+			     re_node_set *limits,
+			     int dst_node, int dst_idx, int src_node,
+			     int src_idx) internal_function;
+static int check_dst_limits_calc_pos_1 (const re_match_context_t *mctx,
+					int boundaries, int subexp_idx,
+					int from_node, int bkref_idx)
+     internal_function;
+static int check_dst_limits_calc_pos (const re_match_context_t *mctx,
+				      int limit, int subexp_idx,
+				      int node, int str_idx,
+				      int bkref_idx) internal_function;
+static reg_errcode_t check_subexp_limits (const re_dfa_t *dfa,
+					  re_node_set *dest_nodes,
+					  const re_node_set *candidates,
+					  re_node_set *limits,
+					  struct re_backref_cache_entry *bkref_ents,
+					  int str_idx) internal_function;
+static reg_errcode_t sift_states_bkref (const re_match_context_t *mctx,
+					re_sift_context_t *sctx,
+					int str_idx, const re_node_set *candidates)
+     internal_function;
+static reg_errcode_t merge_state_array (const re_dfa_t *dfa,
+					re_dfastate_t **dst,
+					re_dfastate_t **src, int num)
+     internal_function;
+static re_dfastate_t *find_recover_state (reg_errcode_t *err,
+					 re_match_context_t *mctx) internal_function;
+static re_dfastate_t *transit_state (reg_errcode_t *err,
+				     re_match_context_t *mctx,
+				     re_dfastate_t *state) internal_function;
+static re_dfastate_t *merge_state_with_log (reg_errcode_t *err,
+					    re_match_context_t *mctx,
+					    re_dfastate_t *next_state)
+     internal_function;
+static reg_errcode_t check_subexp_matching_top (re_match_context_t *mctx,
+						re_node_set *cur_nodes,
+						int str_idx) internal_function;
+#if 0
+static re_dfastate_t *transit_state_sb (reg_errcode_t *err,
+					re_match_context_t *mctx,
+					re_dfastate_t *pstate)
+     internal_function;
+#endif
+#ifdef RE_ENABLE_I18N
+static reg_errcode_t transit_state_mb (re_match_context_t *mctx,
+				       re_dfastate_t *pstate)
+     internal_function;
+#endif /* RE_ENABLE_I18N */
+static reg_errcode_t transit_state_bkref (re_match_context_t *mctx,
+					  const re_node_set *nodes)
+     internal_function;
+static reg_errcode_t get_subexp (re_match_context_t *mctx,
+				 int bkref_node, int bkref_str_idx)
+     internal_function;
+static reg_errcode_t get_subexp_sub (re_match_context_t *mctx,
+				     const re_sub_match_top_t *sub_top,
+				     re_sub_match_last_t *sub_last,
+				     int bkref_node, int bkref_str)
+     internal_function;
+static int find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
+			     int subexp_idx, int type) internal_function;
+static reg_errcode_t check_arrival (re_match_context_t *mctx,
+				    state_array_t *path, int top_node,
+				    int top_str, int last_node, int last_str,
+				    int type) internal_function;
+static reg_errcode_t check_arrival_add_next_nodes (re_match_context_t *mctx,
+						   int str_idx,
+						   re_node_set *cur_nodes,
+						   re_node_set *next_nodes)
+     internal_function;
+static reg_errcode_t check_arrival_expand_ecl (const re_dfa_t *dfa,
+					       re_node_set *cur_nodes,
+					       int ex_subexp, int type)
+     internal_function;
+static reg_errcode_t check_arrival_expand_ecl_sub (const re_dfa_t *dfa,
+						   re_node_set *dst_nodes,
+						   int target, int ex_subexp,
+						   int type) internal_function;
+static reg_errcode_t expand_bkref_cache (re_match_context_t *mctx,
+					 re_node_set *cur_nodes, int cur_str,
+					 int subexp_num, int type)
+     internal_function;
+static int build_trtable (const re_dfa_t *dfa,
+			  re_dfastate_t *state) internal_function;
+#ifdef RE_ENABLE_I18N
+static int check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
+				    const re_string_t *input, int idx)
+     internal_function;
+# ifdef _LIBC
+static unsigned int find_collation_sequence_value (const unsigned char *mbs,
+						   size_t name_len)
+     internal_function;
+# endif /* _LIBC */
+#endif /* RE_ENABLE_I18N */
+static int group_nodes_into_DFAstates (const re_dfa_t *dfa,
+				       const re_dfastate_t *state,
+				       re_node_set *states_node,
+				       bitset_t *states_ch) internal_function;
+static int check_node_accept (const re_match_context_t *mctx,
+			      const re_token_t *node, int idx)
+     internal_function;
+static reg_errcode_t extend_buffers (re_match_context_t *mctx)
+     internal_function;
+
+/* Entry point for POSIX code.  */
+
+/* regexec searches for a given pattern, specified by PREG, in the
+   string STRING.
+
+   If NMATCH is zero or REG_NOSUB was set in the cflags argument to
+   `regcomp', we ignore PMATCH.  Otherwise, we assume PMATCH has at
+   least NMATCH elements, and we set them to the offsets of the
+   corresponding matched substrings.
+
+   EFLAGS specifies `execution flags' which affect matching: if
+   REG_NOTBOL is set, then ^ does not match at the beginning of the
+   string; if REG_NOTEOL is set, then $ does not match at the end.
+
+   We return 0 if we find a match and REG_NOMATCH if not.  */
+
+int
+regexec (preg, string, nmatch, pmatch, eflags)
+    const regex_t *__restrict preg;
+    const char *__restrict string;
+    size_t nmatch;
+    regmatch_t pmatch[];
+    int eflags;
+{
+  reg_errcode_t err;
+  int start, length;
+  re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+
+  if (eflags & ~(REG_NOTBOL | REG_NOTEOL | REG_STARTEND))
+    return REG_BADPAT;
+
+  if (eflags & REG_STARTEND)
+    {
+      start = pmatch[0].rm_so;
+      length = pmatch[0].rm_eo;
+    }
+  else
+    {
+      start = 0;
+      length = strlen (string);
+    }
+
+  __libc_lock_lock (dfa->lock);
+  if (preg->no_sub)
+    err = re_search_internal (preg, string, length, start, length - start,
+			      length, 0, NULL, eflags);
+  else
+    err = re_search_internal (preg, string, length, start, length - start,
+			      length, nmatch, pmatch, eflags);
+  __libc_lock_unlock (dfa->lock);
+  return err != REG_NOERROR;
+}
+
+#ifdef _LIBC
+# include <shlib-compat.h>
+versioned_symbol (libc, __regexec, regexec, GLIBC_2_3_4);
+
+# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)
+__typeof__ (__regexec) __compat_regexec;
+
+int
+attribute_compat_text_section
+__compat_regexec (const regex_t *__restrict preg,
+		  const char *__restrict string, size_t nmatch,
+		  regmatch_t pmatch[], int eflags)
+{
+  return regexec (preg, string, nmatch, pmatch,
+		  eflags & (REG_NOTBOL | REG_NOTEOL));
+}
+compat_symbol (libc, __compat_regexec, regexec, GLIBC_2_0);
+# endif
+#endif
+
+/* Entry points for GNU code.  */
+
+/* re_match, re_search, re_match_2, re_search_2
+
+   The former two functions operate on STRING with length LENGTH,
+   while the later two operate on concatenation of STRING1 and STRING2
+   with lengths LENGTH1 and LENGTH2, respectively.
+
+   re_match() matches the compiled pattern in BUFP against the string,
+   starting at index START.
+
+   re_search() first tries matching at index START, then it tries to match
+   starting from index START + 1, and so on.  The last start position tried
+   is START + RANGE.  (Thus RANGE = 0 forces re_search to operate the same
+   way as re_match().)
+
+   The parameter STOP of re_{match,search}_2 specifies that no match exceeding
+   the first STOP characters of the concatenation of the strings should be
+   concerned.
+
+   If REGS is not NULL, and BUFP->no_sub is not set, the offsets of the match
+   and all groups is stroed in REGS.  (For the "_2" variants, the offsets are
+   computed relative to the concatenation, not relative to the individual
+   strings.)
+
+   On success, re_match* functions return the length of the match, re_search*
+   return the position of the start of the match.  Return value -1 means no
+   match was found and -2 indicates an internal error.  */
+
+int
+re_match (bufp, string, length, start, regs)
+    struct re_pattern_buffer *bufp;
+    const char *string;
+    int length, start;
+    struct re_registers *regs;
+{
+  return re_search_stub (bufp, string, length, start, 0, length, regs, 1);
+}
+#ifdef _LIBC
+weak_alias (__re_match, re_match)
+#endif
+
+int
+re_search (bufp, string, length, start, range, regs)
+    struct re_pattern_buffer *bufp;
+    const char *string;
+    int length, start, range;
+    struct re_registers *regs;
+{
+  return re_search_stub (bufp, string, length, start, range, length, regs, 0);
+}
+#ifdef _LIBC
+weak_alias (__re_search, re_search)
+#endif
+
+int
+re_match_2 (bufp, string1, length1, string2, length2, start, regs, stop)
+    struct re_pattern_buffer *bufp;
+    const char *string1, *string2;
+    int length1, length2, start, stop;
+    struct re_registers *regs;
+{
+  return re_search_2_stub (bufp, string1, length1, string2, length2,
+			   start, 0, regs, stop, 1);
+}
+#ifdef _LIBC
+weak_alias (__re_match_2, re_match_2)
+#endif
+
+int
+re_search_2 (bufp, string1, length1, string2, length2, start, range, regs, stop)
+    struct re_pattern_buffer *bufp;
+    const char *string1, *string2;
+    int length1, length2, start, range, stop;
+    struct re_registers *regs;
+{
+  return re_search_2_stub (bufp, string1, length1, string2, length2,
+			   start, range, regs, stop, 0);
+}
+#ifdef _LIBC
+weak_alias (__re_search_2, re_search_2)
+#endif
+
+static int
+re_search_2_stub (bufp, string1, length1, string2, length2, start, range, regs,
+		  stop, ret_len)
+    struct re_pattern_buffer *bufp;
+    const char *string1, *string2;
+    int length1, length2, start, range, stop, ret_len;
+    struct re_registers *regs;
+{
+  const char *str;
+  int rval;
+  int len = length1 + length2;
+  int free_str = 0;
+
+  if (BE (length1 < 0 || length2 < 0 || stop < 0, 0))
+    return -2;
+
+  /* Concatenate the strings.  */
+  if (length2 > 0)
+    if (length1 > 0)
+      {
+	char *s = re_malloc (char, len);
+
+	if (BE (s == NULL, 0))
+	  return -2;
+#ifdef _LIBC
+	memcpy (__mempcpy (s, string1, length1), string2, length2);
+#else
+	memcpy (s, string1, length1);
+	memcpy (s + length1, string2, length2);
+#endif
+	str = s;
+	free_str = 1;
+      }
+    else
+      str = string2;
+  else
+    str = string1;
+
+  rval = re_search_stub (bufp, str, len, start, range, stop, regs,
+			 ret_len);
+  if (free_str)
+    re_free ((char *) str);
+  return rval;
+}
+
+/* The parameters have the same meaning as those of re_search.
+   Additional parameters:
+   If RET_LEN is nonzero the length of the match is returned (re_match style);
+   otherwise the position of the match is returned.  */
+
+static int
+re_search_stub (bufp, string, length, start, range, stop, regs, ret_len)
+    struct re_pattern_buffer *bufp;
+    const char *string;
+    int length, start, range, stop, ret_len;
+    struct re_registers *regs;
+{
+  reg_errcode_t result;
+  regmatch_t *pmatch;
+  int nregs, rval;
+  int eflags = 0;
+  re_dfa_t *dfa = (re_dfa_t *) bufp->buffer;
+
+  /* Check for out-of-range.  */
+  if (BE (start < 0 || start > length, 0))
+    return -1;
+  if (BE (start + range > length, 0))
+    range = length - start;
+  else if (BE (start + range < 0, 0))
+    range = -start;
+
+  __libc_lock_lock (dfa->lock);
+
+  eflags |= (bufp->not_bol) ? REG_NOTBOL : 0;
+  eflags |= (bufp->not_eol) ? REG_NOTEOL : 0;
+
+  /* Compile fastmap if we haven't yet.  */
+  if (range > 0 && bufp->fastmap != NULL && !bufp->fastmap_accurate)
+    re_compile_fastmap (bufp);
+
+  if (BE (bufp->no_sub, 0))
+    regs = NULL;
+
+  /* We need at least 1 register.  */
+  if (regs == NULL)
+    nregs = 1;
+  else if (BE (bufp->regs_allocated == REGS_FIXED &&
+	       regs->num_regs < bufp->re_nsub + 1, 0))
+    {
+      nregs = regs->num_regs;
+      if (BE (nregs < 1, 0))
+	{
+	  /* Nothing can be copied to regs.  */
+	  regs = NULL;
+	  nregs = 1;
+	}
+    }
+  else
+    nregs = bufp->re_nsub + 1;
+  pmatch = re_malloc (regmatch_t, nregs);
+  if (BE (pmatch == NULL, 0))
+    {
+      rval = -2;
+      goto out;
+    }
+
+  result = re_search_internal (bufp, string, length, start, range, stop,
+			       nregs, pmatch, eflags);
+
+  rval = 0;
+
+  /* I hope we needn't fill ther regs with -1's when no match was found.  */
+  if (result != REG_NOERROR)
+    rval = -1;
+  else if (regs != NULL)
+    {
+      /* If caller wants register contents data back, copy them.  */
+      bufp->regs_allocated = re_copy_regs (regs, pmatch, nregs,
+					   bufp->regs_allocated);
+      if (BE (bufp->regs_allocated == REGS_UNALLOCATED, 0))
+	rval = -2;
+    }
+
+  if (BE (rval == 0, 1))
+    {
+      if (ret_len)
+	{
+	  assert (pmatch[0].rm_so == start);
+	  rval = pmatch[0].rm_eo - start;
+	}
+      else
+	rval = pmatch[0].rm_so;
+    }
+  re_free (pmatch);
+ out:
+  __libc_lock_unlock (dfa->lock);
+  return rval;
+}
+
+static unsigned
+re_copy_regs (regs, pmatch, nregs, regs_allocated)
+    struct re_registers *regs;
+    regmatch_t *pmatch;
+    int nregs, regs_allocated;
+{
+  int rval = REGS_REALLOCATE;
+  int i;
+  int need_regs = nregs + 1;
+  /* We need one extra element beyond `num_regs' for the `-1' marker GNU code
+     uses.  */
+
+  /* Have the register data arrays been allocated?  */
+  if (regs_allocated == REGS_UNALLOCATED)
+    { /* No.  So allocate them with malloc.  */
+      regs->start = re_malloc (regoff_t, need_regs);
+      regs->end = re_malloc (regoff_t, need_regs);
+      if (BE (regs->start == NULL, 0) || BE (regs->end == NULL, 0))
+	return REGS_UNALLOCATED;
+      regs->num_regs = need_regs;
+    }
+  else if (regs_allocated == REGS_REALLOCATE)
+    { /* Yes.  If we need more elements than were already
+	 allocated, reallocate them.  If we need fewer, just
+	 leave it alone.  */
+      if (BE (need_regs > regs->num_regs, 0))
+	{
+	  regoff_t *new_start = re_realloc (regs->start, regoff_t, need_regs);
+	  regoff_t *new_end = re_realloc (regs->end, regoff_t, need_regs);
+	  if (BE (new_start == NULL, 0) || BE (new_end == NULL, 0))
+	    return REGS_UNALLOCATED;
+	  regs->start = new_start;
+	  regs->end = new_end;
+	  regs->num_regs = need_regs;
+	}
+    }
+  else
+    {
+      assert (regs_allocated == REGS_FIXED);
+      /* This function may not be called with REGS_FIXED and nregs too big.  */
+      assert (regs->num_regs >= nregs);
+      rval = REGS_FIXED;
+    }
+
+  /* Copy the regs.  */
+  for (i = 0; i < nregs; ++i)
+    {
+      regs->start[i] = pmatch[i].rm_so;
+      regs->end[i] = pmatch[i].rm_eo;
+    }
+  for ( ; i < regs->num_regs; ++i)
+    regs->start[i] = regs->end[i] = -1;
+
+  return rval;
+}
+
+/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
+   ENDS.  Subsequent matches using PATTERN_BUFFER and REGS will use
+   this memory for recording register information.  STARTS and ENDS
+   must be allocated using the malloc library routine, and must each
+   be at least NUM_REGS * sizeof (regoff_t) bytes long.
+
+   If NUM_REGS == 0, then subsequent matches should allocate their own
+   register data.
+
+   Unless this function is called, the first search or match using
+   PATTERN_BUFFER will allocate its own register data, without
+   freeing the old data.  */
+
+void
+re_set_registers (bufp, regs, num_regs, starts, ends)
+    struct re_pattern_buffer *bufp;
+    struct re_registers *regs;
+    unsigned num_regs;
+    regoff_t *starts, *ends;
+{
+  if (num_regs)
+    {
+      bufp->regs_allocated = REGS_REALLOCATE;
+      regs->num_regs = num_regs;
+      regs->start = starts;
+      regs->end = ends;
+    }
+  else
+    {
+      bufp->regs_allocated = REGS_UNALLOCATED;
+      regs->num_regs = 0;
+      regs->start = regs->end = (regoff_t *) 0;
+    }
+}
+#ifdef _LIBC
+weak_alias (__re_set_registers, re_set_registers)
+#endif
+
+/* Entry points compatible with 4.2 BSD regex library.  We don't define
+   them unless specifically requested.  */
+
+#if defined _REGEX_RE_COMP || defined _LIBC
+int
+# ifdef _LIBC
+weak_function
+# endif
+re_exec (s)
+     const char *s;
+{
+  return 0 == regexec (&re_comp_buf, s, 0, NULL, 0);
+}
+#endif /* _REGEX_RE_COMP */
+
+/* Internal entry point.  */
+
+/* Searches for a compiled pattern PREG in the string STRING, whose
+   length is LENGTH.  NMATCH, PMATCH, and EFLAGS have the same
+   mingings with regexec.  START, and RANGE have the same meanings
+   with re_search.
+   Return REG_NOERROR if we find a match, and REG_NOMATCH if not,
+   otherwise return the error code.
+   Note: We assume front end functions already check ranges.
+   (START + RANGE >= 0 && START + RANGE <= LENGTH)  */
+
+static reg_errcode_t
+re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
+		    eflags)
+    const regex_t *preg;
+    const char *string;
+    int length, start, range, stop, eflags;
+    size_t nmatch;
+    regmatch_t pmatch[];
+{
+  reg_errcode_t err;
+  const re_dfa_t *dfa = (const re_dfa_t *) preg->buffer;
+  int left_lim, right_lim, incr;
+  int fl_longest_match, match_first, match_kind, match_last = -1;
+  int extra_nmatch;
+  int sb, ch;
+#if defined _LIBC || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
+  re_match_context_t mctx = { .dfa = dfa };
+#else
+  re_match_context_t mctx;
+#endif
+  char *fastmap = (preg->fastmap != NULL && preg->fastmap_accurate
+		   && range && !preg->can_be_null) ? preg->fastmap : NULL;
+  RE_TRANSLATE_TYPE t = preg->translate;
+
+#if !(defined _LIBC || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
+  memset (&mctx, '\0', sizeof (re_match_context_t));
+  mctx.dfa = dfa;
+#endif
+
+  extra_nmatch = (nmatch > preg->re_nsub) ? nmatch - (preg->re_nsub + 1) : 0;
+  nmatch -= extra_nmatch;
+
+  /* Check if the DFA haven't been compiled.  */
+  if (BE (preg->used == 0 || dfa->init_state == NULL
+	  || dfa->init_state_word == NULL || dfa->init_state_nl == NULL
+	  || dfa->init_state_begbuf == NULL, 0))
+    return REG_NOMATCH;
+
+#ifdef DEBUG
+  /* We assume front-end functions already check them.  */
+  assert (start + range >= 0 && start + range <= length);
+#endif
+
+  /* If initial states with non-begbuf contexts have no elements,
+     the regex must be anchored.  If preg->newline_anchor is set,
+     we'll never use init_state_nl, so do not check it.  */
+  if (dfa->init_state->nodes.nelem == 0
+      && dfa->init_state_word->nodes.nelem == 0
+      && (dfa->init_state_nl->nodes.nelem == 0
+	  || !preg->newline_anchor))
+    {
+      if (start != 0 && start + range != 0)
+        return REG_NOMATCH;
+      start = range = 0;
+    }
+
+  /* We must check the longest matching, if nmatch > 0.  */
+  fl_longest_match = (nmatch != 0 || dfa->nbackref);
+
+  err = re_string_allocate (&mctx.input, string, length, dfa->nodes_len + 1,
+			    preg->translate, preg->syntax & RE_ICASE, dfa);
+  if (BE (err != REG_NOERROR, 0))
+    goto free_return;
+  mctx.input.stop = stop;
+  mctx.input.raw_stop = stop;
+  mctx.input.newline_anchor = preg->newline_anchor;
+
+  err = match_ctx_init (&mctx, eflags, dfa->nbackref * 2);
+  if (BE (err != REG_NOERROR, 0))
+    goto free_return;
+
+  /* We will log all the DFA states through which the dfa pass,
+     if nmatch > 1, or this dfa has "multibyte node", which is a
+     back-reference or a node which can accept multibyte character or
+     multi character collating element.  */
+  if (nmatch > 1 || dfa->has_mb_node)
+    {
+      mctx.state_log = re_malloc (re_dfastate_t *, mctx.input.bufs_len + 1);
+      if (BE (mctx.state_log == NULL, 0))
+	{
+	  err = REG_ESPACE;
+	  goto free_return;
+	}
+    }
+  else
+    mctx.state_log = NULL;
+
+  match_first = start;
+  mctx.input.tip_context = (eflags & REG_NOTBOL) ? CONTEXT_BEGBUF
+			   : CONTEXT_NEWLINE | CONTEXT_BEGBUF;
+
+  /* Check incrementally whether of not the input string match.  */
+  incr = (range < 0) ? -1 : 1;
+  left_lim = (range < 0) ? start + range : start;
+  right_lim = (range < 0) ? start : start + range;
+  sb = dfa->mb_cur_max == 1;
+  match_kind =
+    (fastmap
+     ? ((sb || !(preg->syntax & RE_ICASE || t) ? 4 : 0)
+	| (range >= 0 ? 2 : 0)
+	| (t != NULL ? 1 : 0))
+     : 8);
+
+  for (;; match_first += incr)
+    {
+      err = REG_NOMATCH;
+      if (match_first < left_lim || right_lim < match_first)
+	goto free_return;
+
+      /* Advance as rapidly as possible through the string, until we
+	 find a plausible place to start matching.  This may be done
+	 with varying efficiency, so there are various possibilities:
+	 only the most common of them are specialized, in order to
+	 save on code size.  We use a switch statement for speed.  */
+      switch (match_kind)
+	{
+	case 8:
+	  /* No fastmap.  */
+	  break;
+
+	case 7:
+	  /* Fastmap with single-byte translation, match forward.  */
+	  while (BE (match_first < right_lim, 1)
+		 && !fastmap[t[(unsigned char) string[match_first]]])
+	    ++match_first;
+	  goto forward_match_found_start_or_reached_end;
+
+	case 6:
+	  /* Fastmap without translation, match forward.  */
+	  while (BE (match_first < right_lim, 1)
+		 && !fastmap[(unsigned char) string[match_first]])
+	    ++match_first;
+
+	forward_match_found_start_or_reached_end:
+	  if (BE (match_first == right_lim, 0))
+	    {
+	      ch = match_first >= length
+		       ? 0 : (unsigned char) string[match_first];
+	      if (!fastmap[t ? t[ch] : ch])
+		goto free_return;
+	    }
+	  break;
+
+	case 4:
+	case 5:
+	  /* Fastmap without multi-byte translation, match backwards.  */
+	  while (match_first >= left_lim)
+	    {
+	      ch = match_first >= length
+		       ? 0 : (unsigned char) string[match_first];
+	      if (fastmap[t ? t[ch] : ch])
+		break;
+	      --match_first;
+	    }
+	  if (match_first < left_lim)
+	    goto free_return;
+	  break;
+
+	default:
+	  /* In this case, we can't determine easily the current byte,
+	     since it might be a component byte of a multibyte
+	     character.  Then we use the constructed buffer instead.  */
+	  for (;;)
+	    {
+	      /* If MATCH_FIRST is out of the valid range, reconstruct the
+		 buffers.  */
+	      unsigned int offset = match_first - mctx.input.raw_mbs_idx;
+	      if (BE (offset >= (unsigned int) mctx.input.valid_raw_len, 0))
+		{
+		  err = re_string_reconstruct (&mctx.input, match_first,
+					       eflags);
+		  if (BE (err != REG_NOERROR, 0))
+		    goto free_return;
+
+		  offset = match_first - mctx.input.raw_mbs_idx;
+		}
+	      /* If MATCH_FIRST is out of the buffer, leave it as '\0'.
+		 Note that MATCH_FIRST must not be smaller than 0.  */
+	      ch = (match_first >= length
+		    ? 0 : re_string_byte_at (&mctx.input, offset));
+	      if (fastmap[ch])
+		break;
+	      match_first += incr;
+	      if (match_first < left_lim || match_first > right_lim)
+	        {
+	          err = REG_NOMATCH;
+	          goto free_return;
+	        }
+	    }
+	  break;
+	}
+
+      /* Reconstruct the buffers so that the matcher can assume that
+	 the matching starts from the beginning of the buffer.  */
+      err = re_string_reconstruct (&mctx.input, match_first, eflags);
+      if (BE (err != REG_NOERROR, 0))
+	goto free_return;
+
+#ifdef RE_ENABLE_I18N
+     /* Don't consider this char as a possible match start if it part,
+	yet isn't the head, of a multibyte character.  */
+      if (!sb && !re_string_first_byte (&mctx.input, 0))
+	continue;
+#endif
+
+      /* It seems to be appropriate one, then use the matcher.  */
+      /* We assume that the matching starts from 0.  */
+      mctx.state_log_top = mctx.nbkref_ents = mctx.max_mb_elem_len = 0;
+      match_last = check_matching (&mctx, fl_longest_match,
+				   range >= 0 ? &match_first : NULL);
+      if (match_last != -1)
+	{
+	  if (BE (match_last == -2, 0))
+	    {
+	      err = REG_ESPACE;
+	      goto free_return;
+	    }
+	  else
+	    {
+	      mctx.match_last = match_last;
+	      if ((!preg->no_sub && nmatch > 1) || dfa->nbackref)
+		{
+		  re_dfastate_t *pstate = mctx.state_log[match_last];
+		  mctx.last_node = check_halt_state_context (&mctx, pstate,
+							     match_last);
+		}
+	      if ((!preg->no_sub && nmatch > 1 && dfa->has_plural_match)
+		  || dfa->nbackref)
+		{
+		  err = prune_impossible_nodes (&mctx);
+		  if (err == REG_NOERROR)
+		    break;
+		  if (BE (err != REG_NOMATCH, 0))
+		    goto free_return;
+		  match_last = -1;
+		}
+	      else
+		break; /* We found a match.  */
+	    }
+	}
+
+      match_ctx_clean (&mctx);
+    }
+
+#ifdef DEBUG
+  assert (match_last != -1);
+  assert (err == REG_NOERROR);
+#endif
+
+  /* Set pmatch[] if we need.  */
+  if (nmatch > 0)
+    {
+      int reg_idx;
+
+      /* Initialize registers.  */
+      for (reg_idx = 1; reg_idx < nmatch; ++reg_idx)
+	pmatch[reg_idx].rm_so = pmatch[reg_idx].rm_eo = -1;
+
+      /* Set the points where matching start/end.  */
+      pmatch[0].rm_so = 0;
+      pmatch[0].rm_eo = mctx.match_last;
+
+      if (!preg->no_sub && nmatch > 1)
+	{
+	  err = set_regs (preg, &mctx, nmatch, pmatch,
+			  dfa->has_plural_match && dfa->nbackref > 0);
+	  if (BE (err != REG_NOERROR, 0))
+	    goto free_return;
+	}
+
+      /* At last, add the offset to the each registers, since we slided
+	 the buffers so that we could assume that the matching starts
+	 from 0.  */
+      for (reg_idx = 0; reg_idx < nmatch; ++reg_idx)
+	if (pmatch[reg_idx].rm_so != -1)
+	  {
+#ifdef RE_ENABLE_I18N
+	    if (BE (mctx.input.offsets_needed != 0, 0))
+	      {
+		pmatch[reg_idx].rm_so =
+		  (pmatch[reg_idx].rm_so == mctx.input.valid_len
+		   ? mctx.input.valid_raw_len
+		   : mctx.input.offsets[pmatch[reg_idx].rm_so]);
+		pmatch[reg_idx].rm_eo =
+		  (pmatch[reg_idx].rm_eo == mctx.input.valid_len
+		   ? mctx.input.valid_raw_len
+		   : mctx.input.offsets[pmatch[reg_idx].rm_eo]);
+	      }
+#else
+	    assert (mctx.input.offsets_needed == 0);
+#endif
+	    pmatch[reg_idx].rm_so += match_first;
+	    pmatch[reg_idx].rm_eo += match_first;
+	  }
+      for (reg_idx = 0; reg_idx < extra_nmatch; ++reg_idx)
+	{
+	  pmatch[nmatch + reg_idx].rm_so = -1;
+	  pmatch[nmatch + reg_idx].rm_eo = -1;
+	}
+
+      if (dfa->subexp_map)
+        for (reg_idx = 0; reg_idx + 1 < nmatch; reg_idx++)
+          if (dfa->subexp_map[reg_idx] != reg_idx)
+            {
+              pmatch[reg_idx + 1].rm_so
+                = pmatch[dfa->subexp_map[reg_idx] + 1].rm_so;
+              pmatch[reg_idx + 1].rm_eo
+                = pmatch[dfa->subexp_map[reg_idx] + 1].rm_eo;
+            }
+    }
+
+ free_return:
+  re_free (mctx.state_log);
+  if (dfa->nbackref)
+    match_ctx_free (&mctx);
+  re_string_destruct (&mctx.input);
+  return err;
+}
+
+static reg_errcode_t
+prune_impossible_nodes (mctx)
+     re_match_context_t *mctx;
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  int halt_node, match_last;
+  reg_errcode_t ret;
+  re_dfastate_t **sifted_states;
+  re_dfastate_t **lim_states = NULL;
+  re_sift_context_t sctx;
+#ifdef DEBUG
+  assert (mctx->state_log != NULL);
+#endif
+  match_last = mctx->match_last;
+  halt_node = mctx->last_node;
+  sifted_states = re_malloc (re_dfastate_t *, match_last + 1);
+  if (BE (sifted_states == NULL, 0))
+    {
+      ret = REG_ESPACE;
+      goto free_return;
+    }
+  if (dfa->nbackref)
+    {
+      lim_states = re_malloc (re_dfastate_t *, match_last + 1);
+      if (BE (lim_states == NULL, 0))
+	{
+	  ret = REG_ESPACE;
+	  goto free_return;
+	}
+      while (1)
+	{
+	  memset (lim_states, '\0',
+		  sizeof (re_dfastate_t *) * (match_last + 1));
+	  sift_ctx_init (&sctx, sifted_states, lim_states, halt_node,
+			 match_last);
+	  ret = sift_states_backward (mctx, &sctx);
+	  re_node_set_free (&sctx.limits);
+	  if (BE (ret != REG_NOERROR, 0))
+	      goto free_return;
+	  if (sifted_states[0] != NULL || lim_states[0] != NULL)
+	    break;
+	  do
+	    {
+	      --match_last;
+	      if (match_last < 0)
+		{
+		  ret = REG_NOMATCH;
+		  goto free_return;
+		}
+	    } while (mctx->state_log[match_last] == NULL
+		     || !mctx->state_log[match_last]->halt);
+	  halt_node = check_halt_state_context (mctx,
+						mctx->state_log[match_last],
+						match_last);
+	}
+      ret = merge_state_array (dfa, sifted_states, lim_states,
+			       match_last + 1);
+      re_free (lim_states);
+      lim_states = NULL;
+      if (BE (ret != REG_NOERROR, 0))
+	goto free_return;
+    }
+  else
+    {
+      sift_ctx_init (&sctx, sifted_states, lim_states, halt_node, match_last);
+      ret = sift_states_backward (mctx, &sctx);
+      re_node_set_free (&sctx.limits);
+      if (BE (ret != REG_NOERROR, 0))
+	goto free_return;
+    }
+  re_free (mctx->state_log);
+  mctx->state_log = sifted_states;
+  sifted_states = NULL;
+  mctx->last_node = halt_node;
+  mctx->match_last = match_last;
+  ret = REG_NOERROR;
+ free_return:
+  re_free (sifted_states);
+  re_free (lim_states);
+  return ret;
+}
+
+/* Acquire an initial state and return it.
+   We must select appropriate initial state depending on the context,
+   since initial states may have constraints like "\<", "^", etc..  */
+
+static inline re_dfastate_t *
+__attribute ((always_inline)) internal_function
+acquire_init_state_context (reg_errcode_t *err, const re_match_context_t *mctx,
+			    int idx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  if (dfa->init_state->has_constraint)
+    {
+      unsigned int context;
+      context = re_string_context_at (&mctx->input, idx - 1, mctx->eflags);
+      if (IS_WORD_CONTEXT (context))
+	return dfa->init_state_word;
+      else if (IS_ORDINARY_CONTEXT (context))
+	return dfa->init_state;
+      else if (IS_BEGBUF_CONTEXT (context) && IS_NEWLINE_CONTEXT (context))
+	return dfa->init_state_begbuf;
+      else if (IS_NEWLINE_CONTEXT (context))
+	return dfa->init_state_nl;
+      else if (IS_BEGBUF_CONTEXT (context))
+	{
+	  /* It is relatively rare case, then calculate on demand.  */
+	  return re_acquire_state_context (err, dfa,
+					   dfa->init_state->entrance_nodes,
+					   context);
+	}
+      else
+	/* Must not happen?  */
+	return dfa->init_state;
+    }
+  else
+    return dfa->init_state;
+}
+
+/* Check whether the regular expression match input string INPUT or not,
+   and return the index where the matching end, return -1 if not match,
+   or return -2 in case of an error.
+   FL_LONGEST_MATCH means we want the POSIX longest matching.
+   If P_MATCH_FIRST is not NULL, and the match fails, it is set to the
+   next place where we may want to try matching.
+   Note that the matcher assume that the maching starts from the current
+   index of the buffer.  */
+
+static int
+internal_function
+check_matching (re_match_context_t *mctx, int fl_longest_match,
+		int *p_match_first)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err;
+  int match = 0;
+  int match_last = -1;
+  int cur_str_idx = re_string_cur_idx (&mctx->input);
+  re_dfastate_t *cur_state;
+  int at_init_state = p_match_first != NULL;
+  int next_start_idx = cur_str_idx;
+
+  err = REG_NOERROR;
+  cur_state = acquire_init_state_context (&err, mctx, cur_str_idx);
+  /* An initial state must not be NULL (invalid).  */
+  if (BE (cur_state == NULL, 0))
+    {
+      assert (err == REG_ESPACE);
+      return -2;
+    }
+
+  if (mctx->state_log != NULL)
+    {
+      mctx->state_log[cur_str_idx] = cur_state;
+
+      /* Check OP_OPEN_SUBEXP in the initial state in case that we use them
+	 later.  E.g. Processing back references.  */
+      if (BE (dfa->nbackref, 0))
+	{
+	  at_init_state = 0;
+	  err = check_subexp_matching_top (mctx, &cur_state->nodes, 0);
+	  if (BE (err != REG_NOERROR, 0))
+	    return err;
+
+	  if (cur_state->has_backref)
+	    {
+	      err = transit_state_bkref (mctx, &cur_state->nodes);
+	      if (BE (err != REG_NOERROR, 0))
+	        return err;
+	    }
+	}
+    }
+
+  /* If the RE accepts NULL string.  */
+  if (BE (cur_state->halt, 0))
+    {
+      if (!cur_state->has_constraint
+	  || check_halt_state_context (mctx, cur_state, cur_str_idx))
+	{
+	  if (!fl_longest_match)
+	    return cur_str_idx;
+	  else
+	    {
+	      match_last = cur_str_idx;
+	      match = 1;
+	    }
+	}
+    }
+
+  while (!re_string_eoi (&mctx->input))
+    {
+      re_dfastate_t *old_state = cur_state;
+      int next_char_idx = re_string_cur_idx (&mctx->input) + 1;
+
+      if (BE (next_char_idx >= mctx->input.bufs_len, 0)
+          || (BE (next_char_idx >= mctx->input.valid_len, 0)
+              && mctx->input.valid_len < mctx->input.len))
+        {
+          err = extend_buffers (mctx);
+          if (BE (err != REG_NOERROR, 0))
+	    {
+	      assert (err == REG_ESPACE);
+	      return -2;
+	    }
+        }
+
+      cur_state = transit_state (&err, mctx, cur_state);
+      if (mctx->state_log != NULL)
+	cur_state = merge_state_with_log (&err, mctx, cur_state);
+
+      if (cur_state == NULL)
+	{
+	  /* Reached the invalid state or an error.  Try to recover a valid
+	     state using the state log, if available and if we have not
+	     already found a valid (even if not the longest) match.  */
+	  if (BE (err != REG_NOERROR, 0))
+	    return -2;
+
+	  if (mctx->state_log == NULL
+	      || (match && !fl_longest_match)
+	      || (cur_state = find_recover_state (&err, mctx)) == NULL)
+	    break;
+	}
+
+      if (BE (at_init_state, 0))
+	{
+	  if (old_state == cur_state)
+	    next_start_idx = next_char_idx;
+	  else
+	    at_init_state = 0;
+	}
+
+      if (cur_state->halt)
+	{
+	  /* Reached a halt state.
+	     Check the halt state can satisfy the current context.  */
+	  if (!cur_state->has_constraint
+	      || check_halt_state_context (mctx, cur_state,
+					   re_string_cur_idx (&mctx->input)))
+	    {
+	      /* We found an appropriate halt state.  */
+	      match_last = re_string_cur_idx (&mctx->input);
+	      match = 1;
+
+	      /* We found a match, do not modify match_first below.  */
+	      p_match_first = NULL;
+	      if (!fl_longest_match)
+		break;
+	    }
+	}
+    }
+
+  if (p_match_first)
+    *p_match_first += next_start_idx;
+
+  return match_last;
+}
+
+/* Check NODE match the current context.  */
+
+static int
+internal_function
+check_halt_node_context (const re_dfa_t *dfa, int node, unsigned int context)
+{
+  re_token_type_t type = dfa->nodes[node].type;
+  unsigned int constraint = dfa->nodes[node].constraint;
+  if (type != END_OF_RE)
+    return 0;
+  if (!constraint)
+    return 1;
+  if (NOT_SATISFY_NEXT_CONSTRAINT (constraint, context))
+    return 0;
+  return 1;
+}
+
+/* Check the halt state STATE match the current context.
+   Return 0 if not match, if the node, STATE has, is a halt node and
+   match the context, return the node.  */
+
+static int
+internal_function
+check_halt_state_context (const re_match_context_t *mctx,
+			  const re_dfastate_t *state, int idx)
+{
+  int i;
+  unsigned int context;
+#ifdef DEBUG
+  assert (state->halt);
+#endif
+  context = re_string_context_at (&mctx->input, idx, mctx->eflags);
+  for (i = 0; i < state->nodes.nelem; ++i)
+    if (check_halt_node_context (mctx->dfa, state->nodes.elems[i], context))
+      return state->nodes.elems[i];
+  return 0;
+}
+
+/* Compute the next node to which "NFA" transit from NODE("NFA" is a NFA
+   corresponding to the DFA).
+   Return the destination node, and update EPS_VIA_NODES, return -1 in case
+   of errors.  */
+
+static int
+internal_function
+proceed_next_node (const re_match_context_t *mctx, int nregs, regmatch_t *regs,
+		   int *pidx, int node, re_node_set *eps_via_nodes,
+		   struct re_fail_stack_t *fs)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  int i, err;
+  if (IS_EPSILON_NODE (dfa->nodes[node].type))
+    {
+      re_node_set *cur_nodes = &mctx->state_log[*pidx]->nodes;
+      re_node_set *edests = &dfa->edests[node];
+      int dest_node;
+      err = re_node_set_insert (eps_via_nodes, node);
+      if (BE (err < 0, 0))
+	return -2;
+      /* Pick up a valid destination, or return -1 if none is found.  */
+      for (dest_node = -1, i = 0; i < edests->nelem; ++i)
+	{
+	  int candidate = edests->elems[i];
+	  if (!re_node_set_contains (cur_nodes, candidate))
+	    continue;
+          if (dest_node == -1)
+	    dest_node = candidate;
+
+          else
+	    {
+	      /* In order to avoid infinite loop like "(a*)*", return the second
+	         epsilon-transition if the first was already considered.  */
+	      if (re_node_set_contains (eps_via_nodes, dest_node))
+	        return candidate;
+
+	      /* Otherwise, push the second epsilon-transition on the fail stack.  */
+	      else if (fs != NULL
+		       && push_fail_stack (fs, *pidx, candidate, nregs, regs,
+				           eps_via_nodes))
+		return -2;
+
+	      /* We know we are going to exit.  */
+	      break;
+	    }
+	}
+      return dest_node;
+    }
+  else
+    {
+      int naccepted = 0;
+      re_token_type_t type = dfa->nodes[node].type;
+
+#ifdef RE_ENABLE_I18N
+      if (dfa->nodes[node].accept_mb)
+	naccepted = check_node_accept_bytes (dfa, node, &mctx->input, *pidx);
+      else
+#endif /* RE_ENABLE_I18N */
+      if (type == OP_BACK_REF)
+	{
+	  int subexp_idx = dfa->nodes[node].opr.idx + 1;
+	  naccepted = regs[subexp_idx].rm_eo - regs[subexp_idx].rm_so;
+	  if (fs != NULL)
+	    {
+	      if (regs[subexp_idx].rm_so == -1 || regs[subexp_idx].rm_eo == -1)
+		return -1;
+	      else if (naccepted)
+		{
+		  char *buf = (char *) re_string_get_buffer (&mctx->input);
+		  if (memcmp (buf + regs[subexp_idx].rm_so, buf + *pidx,
+			      naccepted) != 0)
+		    return -1;
+		}
+	    }
+
+	  if (naccepted == 0)
+	    {
+	      int dest_node;
+	      err = re_node_set_insert (eps_via_nodes, node);
+	      if (BE (err < 0, 0))
+		return -2;
+	      dest_node = dfa->edests[node].elems[0];
+	      if (re_node_set_contains (&mctx->state_log[*pidx]->nodes,
+					dest_node))
+		return dest_node;
+	    }
+	}
+
+      if (naccepted != 0
+	  || check_node_accept (mctx, dfa->nodes + node, *pidx))
+	{
+	  int dest_node = dfa->nexts[node];
+	  *pidx = (naccepted == 0) ? *pidx + 1 : *pidx + naccepted;
+	  if (fs && (*pidx > mctx->match_last || mctx->state_log[*pidx] == NULL
+		     || !re_node_set_contains (&mctx->state_log[*pidx]->nodes,
+					       dest_node)))
+	    return -1;
+	  re_node_set_empty (eps_via_nodes);
+	  return dest_node;
+	}
+    }
+  return -1;
+}
+
+static reg_errcode_t
+internal_function
+push_fail_stack (struct re_fail_stack_t *fs, int str_idx, int dest_node,
+		 int nregs, regmatch_t *regs, re_node_set *eps_via_nodes)
+{
+  reg_errcode_t err;
+  int num = fs->num++;
+  if (fs->num == fs->alloc)
+    {
+      struct re_fail_stack_ent_t *new_array;
+      new_array = realloc (fs->stack, (sizeof (struct re_fail_stack_ent_t)
+				       * fs->alloc * 2));
+      if (new_array == NULL)
+	return REG_ESPACE;
+      fs->alloc *= 2;
+      fs->stack = new_array;
+    }
+  fs->stack[num].idx = str_idx;
+  fs->stack[num].node = dest_node;
+  fs->stack[num].regs = re_malloc (regmatch_t, nregs);
+  if (fs->stack[num].regs == NULL)
+    return REG_ESPACE;
+  memcpy (fs->stack[num].regs, regs, sizeof (regmatch_t) * nregs);
+  err = re_node_set_init_copy (&fs->stack[num].eps_via_nodes, eps_via_nodes);
+  return err;
+}
+
+static int
+internal_function
+pop_fail_stack (struct re_fail_stack_t *fs, int *pidx, int nregs,
+		regmatch_t *regs, re_node_set *eps_via_nodes)
+{
+  int num = --fs->num;
+  assert (num >= 0);
+  *pidx = fs->stack[num].idx;
+  memcpy (regs, fs->stack[num].regs, sizeof (regmatch_t) * nregs);
+  re_node_set_free (eps_via_nodes);
+  re_free (fs->stack[num].regs);
+  *eps_via_nodes = fs->stack[num].eps_via_nodes;
+  return fs->stack[num].node;
+}
+
+/* Set the positions where the subexpressions are starts/ends to registers
+   PMATCH.
+   Note: We assume that pmatch[0] is already set, and
+   pmatch[i].rm_so == pmatch[i].rm_eo == -1 for 0 < i < nmatch.  */
+
+static reg_errcode_t
+internal_function
+set_regs (const regex_t *preg, const re_match_context_t *mctx, size_t nmatch,
+	  regmatch_t *pmatch, int fl_backtrack)
+{
+  const re_dfa_t *dfa = (const re_dfa_t *) preg->buffer;
+  int idx, cur_node;
+  re_node_set eps_via_nodes;
+  struct re_fail_stack_t *fs;
+  struct re_fail_stack_t fs_body = { 0, 2, NULL };
+  regmatch_t *prev_idx_match;
+  int prev_idx_match_malloced = 0;
+
+#ifdef DEBUG
+  assert (nmatch > 1);
+  assert (mctx->state_log != NULL);
+#endif
+  if (fl_backtrack)
+    {
+      fs = &fs_body;
+      fs->stack = re_malloc (struct re_fail_stack_ent_t, fs->alloc);
+      if (fs->stack == NULL)
+	return REG_ESPACE;
+    }
+  else
+    fs = NULL;
+
+  cur_node = dfa->init_node;
+  re_node_set_init_empty (&eps_via_nodes);
+
+  if (__libc_use_alloca (nmatch * sizeof (regmatch_t)))
+    prev_idx_match = (regmatch_t *) alloca (nmatch * sizeof (regmatch_t));
+  else
+    {
+      prev_idx_match = re_malloc (regmatch_t, nmatch);
+      if (prev_idx_match == NULL)
+	{
+	  free_fail_stack_return (fs);
+	  return REG_ESPACE;
+	}
+      prev_idx_match_malloced = 1;
+    }
+  memcpy (prev_idx_match, pmatch, sizeof (regmatch_t) * nmatch);
+
+  for (idx = pmatch[0].rm_so; idx <= pmatch[0].rm_eo ;)
+    {
+      update_regs (dfa, pmatch, prev_idx_match, cur_node, idx, nmatch);
+
+      if (idx == pmatch[0].rm_eo && cur_node == mctx->last_node)
+	{
+	  int reg_idx;
+	  if (fs)
+	    {
+	      for (reg_idx = 0; reg_idx < nmatch; ++reg_idx)
+		if (pmatch[reg_idx].rm_so > -1 && pmatch[reg_idx].rm_eo == -1)
+		  break;
+	      if (reg_idx == nmatch)
+		{
+		  re_node_set_free (&eps_via_nodes);
+		  if (prev_idx_match_malloced)
+		    re_free (prev_idx_match);
+		  return free_fail_stack_return (fs);
+		}
+	      cur_node = pop_fail_stack (fs, &idx, nmatch, pmatch,
+					 &eps_via_nodes);
+	    }
+	  else
+	    {
+	      re_node_set_free (&eps_via_nodes);
+	      if (prev_idx_match_malloced)
+		re_free (prev_idx_match);
+	      return REG_NOERROR;
+	    }
+	}
+
+      /* Proceed to next node.  */
+      cur_node = proceed_next_node (mctx, nmatch, pmatch, &idx, cur_node,
+				    &eps_via_nodes, fs);
+
+      if (BE (cur_node < 0, 0))
+	{
+	  if (BE (cur_node == -2, 0))
+	    {
+	      re_node_set_free (&eps_via_nodes);
+	      if (prev_idx_match_malloced)
+		re_free (prev_idx_match);
+	      free_fail_stack_return (fs);
+	      return REG_ESPACE;
+	    }
+	  if (fs)
+	    cur_node = pop_fail_stack (fs, &idx, nmatch, pmatch,
+				       &eps_via_nodes);
+	  else
+	    {
+	      re_node_set_free (&eps_via_nodes);
+	      if (prev_idx_match_malloced)
+		re_free (prev_idx_match);
+	      return REG_NOMATCH;
+	    }
+	}
+    }
+  re_node_set_free (&eps_via_nodes);
+  if (prev_idx_match_malloced)
+    re_free (prev_idx_match);
+  return free_fail_stack_return (fs);
+}
+
+static reg_errcode_t
+internal_function
+free_fail_stack_return (struct re_fail_stack_t *fs)
+{
+  if (fs)
+    {
+      int fs_idx;
+      for (fs_idx = 0; fs_idx < fs->num; ++fs_idx)
+	{
+	  re_node_set_free (&fs->stack[fs_idx].eps_via_nodes);
+	  re_free (fs->stack[fs_idx].regs);
+	}
+      re_free (fs->stack);
+    }
+  return REG_NOERROR;
+}
+
+static void
+internal_function
+update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
+	     regmatch_t *prev_idx_match, int cur_node, int cur_idx, int nmatch)
+{
+  int type = dfa->nodes[cur_node].type;
+  if (type == OP_OPEN_SUBEXP)
+    {
+      int reg_num = dfa->nodes[cur_node].opr.idx + 1;
+
+      /* We are at the first node of this sub expression.  */
+      if (reg_num < nmatch)
+	{
+	  pmatch[reg_num].rm_so = cur_idx;
+	  pmatch[reg_num].rm_eo = -1;
+	}
+    }
+  else if (type == OP_CLOSE_SUBEXP)
+    {
+      int reg_num = dfa->nodes[cur_node].opr.idx + 1;
+      if (reg_num < nmatch)
+	{
+	  /* We are at the last node of this sub expression.  */
+	  if (pmatch[reg_num].rm_so < cur_idx)
+	    {
+	      pmatch[reg_num].rm_eo = cur_idx;
+	      /* This is a non-empty match or we are not inside an optional
+		 subexpression.  Accept this right away.  */
+	      memcpy (prev_idx_match, pmatch, sizeof (regmatch_t) * nmatch);
+	    }
+	  else
+	    {
+	      if (dfa->nodes[cur_node].opt_subexp
+		  && prev_idx_match[reg_num].rm_so != -1)
+		/* We transited through an empty match for an optional
+		   subexpression, like (a?)*, and this is not the subexp's
+		   first match.  Copy back the old content of the registers
+		   so that matches of an inner subexpression are undone as
+		   well, like in ((a?))*.  */
+		memcpy (pmatch, prev_idx_match, sizeof (regmatch_t) * nmatch);
+	      else
+		/* We completed a subexpression, but it may be part of
+		   an optional one, so do not update PREV_IDX_MATCH.  */
+		pmatch[reg_num].rm_eo = cur_idx;
+	    }
+	}
+    }
+}
+
+/* This function checks the STATE_LOG from the SCTX->last_str_idx to 0
+   and sift the nodes in each states according to the following rules.
+   Updated state_log will be wrote to STATE_LOG.
+
+   Rules: We throw away the Node `a' in the STATE_LOG[STR_IDX] if...
+     1. When STR_IDX == MATCH_LAST(the last index in the state_log):
+	If `a' isn't the LAST_NODE and `a' can't epsilon transit to
+	the LAST_NODE, we throw away the node `a'.
+     2. When 0 <= STR_IDX < MATCH_LAST and `a' accepts
+	string `s' and transit to `b':
+	i. If 'b' isn't in the STATE_LOG[STR_IDX+strlen('s')], we throw
+	   away the node `a'.
+	ii. If 'b' is in the STATE_LOG[STR_IDX+strlen('s')] but 'b' is
+	    thrown away, we throw away the node `a'.
+     3. When 0 <= STR_IDX < MATCH_LAST and 'a' epsilon transit to 'b':
+	i. If 'b' isn't in the STATE_LOG[STR_IDX], we throw away the
+	   node `a'.
+	ii. If 'b' is in the STATE_LOG[STR_IDX] but 'b' is thrown away,
+	    we throw away the node `a'.  */
+
+#define STATE_NODE_CONTAINS(state,node) \
+  ((state) != NULL && re_node_set_contains (&(state)->nodes, node))
+
+static reg_errcode_t
+internal_function
+sift_states_backward (const re_match_context_t *mctx, re_sift_context_t *sctx)
+{
+  reg_errcode_t err;
+  int null_cnt = 0;
+  int str_idx = sctx->last_str_idx;
+  re_node_set cur_dest;
+
+#ifdef DEBUG
+  assert (mctx->state_log != NULL && mctx->state_log[str_idx] != NULL);
+#endif
+
+  /* Build sifted state_log[str_idx].  It has the nodes which can epsilon
+     transit to the last_node and the last_node itself.  */
+  err = re_node_set_init_1 (&cur_dest, sctx->last_node);
+  if (BE (err != REG_NOERROR, 0))
+    return err;
+  err = update_cur_sifted_state (mctx, sctx, str_idx, &cur_dest);
+  if (BE (err != REG_NOERROR, 0))
+    goto free_return;
+
+  /* Then check each states in the state_log.  */
+  while (str_idx > 0)
+    {
+      /* Update counters.  */
+      null_cnt = (sctx->sifted_states[str_idx] == NULL) ? null_cnt + 1 : 0;
+      if (null_cnt > mctx->max_mb_elem_len)
+	{
+	  memset (sctx->sifted_states, '\0',
+		  sizeof (re_dfastate_t *) * str_idx);
+	  re_node_set_free (&cur_dest);
+	  return REG_NOERROR;
+	}
+      re_node_set_empty (&cur_dest);
+      --str_idx;
+
+      if (mctx->state_log[str_idx])
+	{
+	  err = build_sifted_states (mctx, sctx, str_idx, &cur_dest);
+          if (BE (err != REG_NOERROR, 0))
+	    goto free_return;
+	}
+
+      /* Add all the nodes which satisfy the following conditions:
+	 - It can epsilon transit to a node in CUR_DEST.
+	 - It is in CUR_SRC.
+	 And update state_log.  */
+      err = update_cur_sifted_state (mctx, sctx, str_idx, &cur_dest);
+      if (BE (err != REG_NOERROR, 0))
+	goto free_return;
+    }
+  err = REG_NOERROR;
+ free_return:
+  re_node_set_free (&cur_dest);
+  return err;
+}
+
+static reg_errcode_t
+internal_function
+build_sifted_states (const re_match_context_t *mctx, re_sift_context_t *sctx,
+		     int str_idx, re_node_set *cur_dest)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  const re_node_set *cur_src = &mctx->state_log[str_idx]->non_eps_nodes;
+  int i;
+
+  /* Then build the next sifted state.
+     We build the next sifted state on `cur_dest', and update
+     `sifted_states[str_idx]' with `cur_dest'.
+     Note:
+     `cur_dest' is the sifted state from `state_log[str_idx + 1]'.
+     `cur_src' points the node_set of the old `state_log[str_idx]'
+     (with the epsilon nodes pre-filtered out).  */
+  for (i = 0; i < cur_src->nelem; i++)
+    {
+      int prev_node = cur_src->elems[i];
+      int naccepted = 0;
+      int ret;
+
+#ifdef DEBUG
+      re_token_type_t type = dfa->nodes[prev_node].type;
+      assert (!IS_EPSILON_NODE (type));
+#endif
+#ifdef RE_ENABLE_I18N
+      /* If the node may accept `multi byte'.  */
+      if (dfa->nodes[prev_node].accept_mb)
+	naccepted = sift_states_iter_mb (mctx, sctx, prev_node,
+					 str_idx, sctx->last_str_idx);
+#endif /* RE_ENABLE_I18N */
+
+      /* We don't check backreferences here.
+	 See update_cur_sifted_state().  */
+      if (!naccepted
+	  && check_node_accept (mctx, dfa->nodes + prev_node, str_idx)
+	  && STATE_NODE_CONTAINS (sctx->sifted_states[str_idx + 1],
+				  dfa->nexts[prev_node]))
+	naccepted = 1;
+
+      if (naccepted == 0)
+	continue;
+
+      if (sctx->limits.nelem)
+	{
+	  int to_idx = str_idx + naccepted;
+	  if (check_dst_limits (mctx, &sctx->limits,
+				dfa->nexts[prev_node], to_idx,
+				prev_node, str_idx))
+	    continue;
+	}
+      ret = re_node_set_insert (cur_dest, prev_node);
+      if (BE (ret == -1, 0))
+	return REG_ESPACE;
+    }
+
+  return REG_NOERROR;
+}
+
+/* Helper functions.  */
+
+static reg_errcode_t
+internal_function
+clean_state_log_if_needed (re_match_context_t *mctx, int next_state_log_idx)
+{
+  int top = mctx->state_log_top;
+
+  if (next_state_log_idx >= mctx->input.bufs_len
+      || (next_state_log_idx >= mctx->input.valid_len
+	  && mctx->input.valid_len < mctx->input.len))
+    {
+      reg_errcode_t err;
+      err = extend_buffers (mctx);
+      if (BE (err != REG_NOERROR, 0))
+	return err;
+    }
+
+  if (top < next_state_log_idx)
+    {
+      memset (mctx->state_log + top + 1, '\0',
+	      sizeof (re_dfastate_t *) * (next_state_log_idx - top));
+      mctx->state_log_top = next_state_log_idx;
+    }
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+internal_function
+merge_state_array (const re_dfa_t *dfa, re_dfastate_t **dst,
+		   re_dfastate_t **src, int num)
+{
+  int st_idx;
+  reg_errcode_t err;
+  for (st_idx = 0; st_idx < num; ++st_idx)
+    {
+      if (dst[st_idx] == NULL)
+	dst[st_idx] = src[st_idx];
+      else if (src[st_idx] != NULL)
+	{
+	  re_node_set merged_set;
+	  err = re_node_set_init_union (&merged_set, &dst[st_idx]->nodes,
+					&src[st_idx]->nodes);
+	  if (BE (err != REG_NOERROR, 0))
+	    return err;
+	  dst[st_idx] = re_acquire_state (&err, dfa, &merged_set);
+	  re_node_set_free (&merged_set);
+	  if (BE (err != REG_NOERROR, 0))
+	    return err;
+	}
+    }
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+internal_function
+update_cur_sifted_state (const re_match_context_t *mctx,
+			 re_sift_context_t *sctx, int str_idx,
+			 re_node_set *dest_nodes)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err = REG_NOERROR;
+  const re_node_set *candidates;
+  candidates = ((mctx->state_log[str_idx] == NULL) ? NULL
+		: &mctx->state_log[str_idx]->nodes);
+
+  if (dest_nodes->nelem == 0)
+    sctx->sifted_states[str_idx] = NULL;
+  else
+    {
+      if (candidates)
+	{
+	  /* At first, add the nodes which can epsilon transit to a node in
+	     DEST_NODE.  */
+	  err = add_epsilon_src_nodes (dfa, dest_nodes, candidates);
+	  if (BE (err != REG_NOERROR, 0))
+	    return err;
+
+	  /* Then, check the limitations in the current sift_context.  */
+	  if (sctx->limits.nelem)
+	    {
+	      err = check_subexp_limits (dfa, dest_nodes, candidates, &sctx->limits,
+					 mctx->bkref_ents, str_idx);
+	      if (BE (err != REG_NOERROR, 0))
+		return err;
+	    }
+	}
+
+      sctx->sifted_states[str_idx] = re_acquire_state (&err, dfa, dest_nodes);
+      if (BE (err != REG_NOERROR, 0))
+	return err;
+    }
+
+  if (candidates && mctx->state_log[str_idx]->has_backref)
+    {
+      err = sift_states_bkref (mctx, sctx, str_idx, candidates);
+      if (BE (err != REG_NOERROR, 0))
+	return err;
+    }
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+internal_function
+add_epsilon_src_nodes (const re_dfa_t *dfa, re_node_set *dest_nodes,
+		       const re_node_set *candidates)
+{
+  reg_errcode_t err = REG_NOERROR;
+  int i;
+
+  re_dfastate_t *state = re_acquire_state (&err, dfa, dest_nodes);
+  if (BE (err != REG_NOERROR, 0))
+    return err;
+
+  if (!state->inveclosure.alloc)
+    {
+      err = re_node_set_alloc (&state->inveclosure, dest_nodes->nelem);
+      if (BE (err != REG_NOERROR, 0))
+        return REG_ESPACE;
+      for (i = 0; i < dest_nodes->nelem; i++)
+        re_node_set_merge (&state->inveclosure,
+			   dfa->inveclosures + dest_nodes->elems[i]);
+    }
+  return re_node_set_add_intersect (dest_nodes, candidates,
+				    &state->inveclosure);
+}
+
+static reg_errcode_t
+internal_function
+sub_epsilon_src_nodes (const re_dfa_t *dfa, int node, re_node_set *dest_nodes,
+		       const re_node_set *candidates)
+{
+    int ecl_idx;
+    reg_errcode_t err;
+    re_node_set *inv_eclosure = dfa->inveclosures + node;
+    re_node_set except_nodes;
+    re_node_set_init_empty (&except_nodes);
+    for (ecl_idx = 0; ecl_idx < inv_eclosure->nelem; ++ecl_idx)
+      {
+	int cur_node = inv_eclosure->elems[ecl_idx];
+	if (cur_node == node)
+	  continue;
+	if (IS_EPSILON_NODE (dfa->nodes[cur_node].type))
+	  {
+	    int edst1 = dfa->edests[cur_node].elems[0];
+	    int edst2 = ((dfa->edests[cur_node].nelem > 1)
+			 ? dfa->edests[cur_node].elems[1] : -1);
+	    if ((!re_node_set_contains (inv_eclosure, edst1)
+		 && re_node_set_contains (dest_nodes, edst1))
+		|| (edst2 > 0
+		    && !re_node_set_contains (inv_eclosure, edst2)
+		    && re_node_set_contains (dest_nodes, edst2)))
+	      {
+		err = re_node_set_add_intersect (&except_nodes, candidates,
+						 dfa->inveclosures + cur_node);
+		if (BE (err != REG_NOERROR, 0))
+		  {
+		    re_node_set_free (&except_nodes);
+		    return err;
+		  }
+	      }
+	  }
+      }
+    for (ecl_idx = 0; ecl_idx < inv_eclosure->nelem; ++ecl_idx)
+      {
+	int cur_node = inv_eclosure->elems[ecl_idx];
+	if (!re_node_set_contains (&except_nodes, cur_node))
+	  {
+	    int idx = re_node_set_contains (dest_nodes, cur_node) - 1;
+	    re_node_set_remove_at (dest_nodes, idx);
+	  }
+      }
+    re_node_set_free (&except_nodes);
+    return REG_NOERROR;
+}
+
+static int
+internal_function
+check_dst_limits (const re_match_context_t *mctx, re_node_set *limits,
+		  int dst_node, int dst_idx, int src_node, int src_idx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  int lim_idx, src_pos, dst_pos;
+
+  int dst_bkref_idx = search_cur_bkref_entry (mctx, dst_idx);
+  int src_bkref_idx = search_cur_bkref_entry (mctx, src_idx);
+  for (lim_idx = 0; lim_idx < limits->nelem; ++lim_idx)
+    {
+      int subexp_idx;
+      struct re_backref_cache_entry *ent;
+      ent = mctx->bkref_ents + limits->elems[lim_idx];
+      subexp_idx = dfa->nodes[ent->node].opr.idx;
+
+      dst_pos = check_dst_limits_calc_pos (mctx, limits->elems[lim_idx],
+					   subexp_idx, dst_node, dst_idx,
+					   dst_bkref_idx);
+      src_pos = check_dst_limits_calc_pos (mctx, limits->elems[lim_idx],
+					   subexp_idx, src_node, src_idx,
+					   src_bkref_idx);
+
+      /* In case of:
+	 <src> <dst> ( <subexp> )
+	 ( <subexp> ) <src> <dst>
+	 ( <subexp1> <src> <subexp2> <dst> <subexp3> )  */
+      if (src_pos == dst_pos)
+	continue; /* This is unrelated limitation.  */
+      else
+	return 1;
+    }
+  return 0;
+}
+
+static int
+internal_function
+check_dst_limits_calc_pos_1 (const re_match_context_t *mctx, int boundaries,
+			     int subexp_idx, int from_node, int bkref_idx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  const re_node_set *eclosures = dfa->eclosures + from_node;
+  int node_idx;
+
+  /* Else, we are on the boundary: examine the nodes on the epsilon
+     closure.  */
+  for (node_idx = 0; node_idx < eclosures->nelem; ++node_idx)
+    {
+      int node = eclosures->elems[node_idx];
+      switch (dfa->nodes[node].type)
+	{
+	case OP_BACK_REF:
+	  if (bkref_idx != -1)
+	    {
+	      struct re_backref_cache_entry *ent = mctx->bkref_ents + bkref_idx;
+	      do
+	        {
+		  int dst, cpos;
+
+		  if (ent->node != node)
+		    continue;
+
+		  if (subexp_idx < BITSET_WORD_BITS
+		      && !(ent->eps_reachable_subexps_map
+			   & ((bitset_word_t) 1 << subexp_idx)))
+		    continue;
+
+		  /* Recurse trying to reach the OP_OPEN_SUBEXP and
+		     OP_CLOSE_SUBEXP cases below.  But, if the
+		     destination node is the same node as the source
+		     node, don't recurse because it would cause an
+		     infinite loop: a regex that exhibits this behavior
+		     is ()\1*\1*  */
+		  dst = dfa->edests[node].elems[0];
+		  if (dst == from_node)
+		    {
+		      if (boundaries & 1)
+		        return -1;
+		      else /* if (boundaries & 2) */
+		        return 0;
+		    }
+
+		  cpos =
+		    check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx,
+						 dst, bkref_idx);
+		  if (cpos == -1 /* && (boundaries & 1) */)
+		    return -1;
+		  if (cpos == 0 && (boundaries & 2))
+		    return 0;
+
+		  if (subexp_idx < BITSET_WORD_BITS)
+		    ent->eps_reachable_subexps_map
+		      &= ~((bitset_word_t) 1 << subexp_idx);
+	        }
+	      while (ent++->more);
+	    }
+	  break;
+
+	case OP_OPEN_SUBEXP:
+	  if ((boundaries & 1) && subexp_idx == dfa->nodes[node].opr.idx)
+	    return -1;
+	  break;
+
+	case OP_CLOSE_SUBEXP:
+	  if ((boundaries & 2) && subexp_idx == dfa->nodes[node].opr.idx)
+	    return 0;
+	  break;
+
+	default:
+	    break;
+	}
+    }
+
+  return (boundaries & 2) ? 1 : 0;
+}
+
+static int
+internal_function
+check_dst_limits_calc_pos (const re_match_context_t *mctx, int limit,
+			   int subexp_idx, int from_node, int str_idx,
+			   int bkref_idx)
+{
+  struct re_backref_cache_entry *lim = mctx->bkref_ents + limit;
+  int boundaries;
+
+  /* If we are outside the range of the subexpression, return -1 or 1.  */
+  if (str_idx < lim->subexp_from)
+    return -1;
+
+  if (lim->subexp_to < str_idx)
+    return 1;
+
+  /* If we are within the subexpression, return 0.  */
+  boundaries = (str_idx == lim->subexp_from);
+  boundaries |= (str_idx == lim->subexp_to) << 1;
+  if (boundaries == 0)
+    return 0;
+
+  /* Else, examine epsilon closure.  */
+  return check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx,
+				      from_node, bkref_idx);
+}
+
+/* Check the limitations of sub expressions LIMITS, and remove the nodes
+   which are against limitations from DEST_NODES. */
+
+static reg_errcode_t
+internal_function
+check_subexp_limits (const re_dfa_t *dfa, re_node_set *dest_nodes,
+		     const re_node_set *candidates, re_node_set *limits,
+		     struct re_backref_cache_entry *bkref_ents, int str_idx)
+{
+  reg_errcode_t err;
+  int node_idx, lim_idx;
+
+  for (lim_idx = 0; lim_idx < limits->nelem; ++lim_idx)
+    {
+      int subexp_idx;
+      struct re_backref_cache_entry *ent;
+      ent = bkref_ents + limits->elems[lim_idx];
+
+      if (str_idx <= ent->subexp_from || ent->str_idx < str_idx)
+	continue; /* This is unrelated limitation.  */
+
+      subexp_idx = dfa->nodes[ent->node].opr.idx;
+      if (ent->subexp_to == str_idx)
+	{
+	  int ops_node = -1;
+	  int cls_node = -1;
+	  for (node_idx = 0; node_idx < dest_nodes->nelem; ++node_idx)
+	    {
+	      int node = dest_nodes->elems[node_idx];
+	      re_token_type_t type = dfa->nodes[node].type;
+	      if (type == OP_OPEN_SUBEXP
+		  && subexp_idx == dfa->nodes[node].opr.idx)
+		ops_node = node;
+	      else if (type == OP_CLOSE_SUBEXP
+		       && subexp_idx == dfa->nodes[node].opr.idx)
+		cls_node = node;
+	    }
+
+	  /* Check the limitation of the open subexpression.  */
+	  /* Note that (ent->subexp_to = str_idx != ent->subexp_from).  */
+	  if (ops_node >= 0)
+	    {
+	      err = sub_epsilon_src_nodes (dfa, ops_node, dest_nodes,
+					   candidates);
+	      if (BE (err != REG_NOERROR, 0))
+		return err;
+	    }
+
+	  /* Check the limitation of the close subexpression.  */
+	  if (cls_node >= 0)
+	    for (node_idx = 0; node_idx < dest_nodes->nelem; ++node_idx)
+	      {
+		int node = dest_nodes->elems[node_idx];
+		if (!re_node_set_contains (dfa->inveclosures + node,
+					   cls_node)
+		    && !re_node_set_contains (dfa->eclosures + node,
+					      cls_node))
+		  {
+		    /* It is against this limitation.
+		       Remove it form the current sifted state.  */
+		    err = sub_epsilon_src_nodes (dfa, node, dest_nodes,
+						 candidates);
+		    if (BE (err != REG_NOERROR, 0))
+		      return err;
+		    --node_idx;
+		  }
+	      }
+	}
+      else /* (ent->subexp_to != str_idx)  */
+	{
+	  for (node_idx = 0; node_idx < dest_nodes->nelem; ++node_idx)
+	    {
+	      int node = dest_nodes->elems[node_idx];
+	      re_token_type_t type = dfa->nodes[node].type;
+	      if (type == OP_CLOSE_SUBEXP || type == OP_OPEN_SUBEXP)
+		{
+		  if (subexp_idx != dfa->nodes[node].opr.idx)
+		    continue;
+		  /* It is against this limitation.
+		     Remove it form the current sifted state.  */
+		  err = sub_epsilon_src_nodes (dfa, node, dest_nodes,
+					       candidates);
+		  if (BE (err != REG_NOERROR, 0))
+		    return err;
+		}
+	    }
+	}
+    }
+  return REG_NOERROR;
+}
+
+static reg_errcode_t
+internal_function
+sift_states_bkref (const re_match_context_t *mctx, re_sift_context_t *sctx,
+		   int str_idx, const re_node_set *candidates)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err;
+  int node_idx, node;
+  re_sift_context_t local_sctx;
+  int first_idx = search_cur_bkref_entry (mctx, str_idx);
+
+  if (first_idx == -1)
+    return REG_NOERROR;
+
+  local_sctx.sifted_states = NULL; /* Mark that it hasn't been initialized.  */
+
+  for (node_idx = 0; node_idx < candidates->nelem; ++node_idx)
+    {
+      int enabled_idx;
+      re_token_type_t type;
+      struct re_backref_cache_entry *entry;
+      node = candidates->elems[node_idx];
+      type = dfa->nodes[node].type;
+      /* Avoid infinite loop for the REs like "()\1+".  */
+      if (node == sctx->last_node && str_idx == sctx->last_str_idx)
+	continue;
+      if (type != OP_BACK_REF)
+	continue;
+
+      entry = mctx->bkref_ents + first_idx;
+      enabled_idx = first_idx;
+      do
+	{
+	  int subexp_len;
+	  int to_idx;
+	  int dst_node;
+	  int ret;
+	  re_dfastate_t *cur_state;
+
+	  if (entry->node != node)
+	    continue;
+	  subexp_len = entry->subexp_to - entry->subexp_from;
+	  to_idx = str_idx + subexp_len;
+	  dst_node = (subexp_len ? dfa->nexts[node]
+		      : dfa->edests[node].elems[0]);
+
+	  if (to_idx > sctx->last_str_idx
+	      || sctx->sifted_states[to_idx] == NULL
+	      || !STATE_NODE_CONTAINS (sctx->sifted_states[to_idx], dst_node)
+	      || check_dst_limits (mctx, &sctx->limits, node,
+				   str_idx, dst_node, to_idx))
+	    continue;
+
+	  if (local_sctx.sifted_states == NULL)
+	    {
+	      local_sctx = *sctx;
+	      err = re_node_set_init_copy (&local_sctx.limits, &sctx->limits);
+	      if (BE (err != REG_NOERROR, 0))
+		goto free_return;
+	    }
+	  local_sctx.last_node = node;
+	  local_sctx.last_str_idx = str_idx;
+	  ret = re_node_set_insert (&local_sctx.limits, enabled_idx);
+	  if (BE (ret < 0, 0))
+	    {
+	      err = REG_ESPACE;
+	      goto free_return;
+	    }
+	  cur_state = local_sctx.sifted_states[str_idx];
+	  err = sift_states_backward (mctx, &local_sctx);
+	  if (BE (err != REG_NOERROR, 0))
+	    goto free_return;
+	  if (sctx->limited_states != NULL)
+	    {
+	      err = merge_state_array (dfa, sctx->limited_states,
+				       local_sctx.sifted_states,
+				       str_idx + 1);
+	      if (BE (err != REG_NOERROR, 0))
+		goto free_return;
+	    }
+	  local_sctx.sifted_states[str_idx] = cur_state;
+	  re_node_set_remove (&local_sctx.limits, enabled_idx);
+
+	  /* mctx->bkref_ents may have changed, reload the pointer.  */
+          entry = mctx->bkref_ents + enabled_idx;
+	}
+      while (enabled_idx++, entry++->more);
+    }
+  err = REG_NOERROR;
+ free_return:
+  if (local_sctx.sifted_states != NULL)
+    {
+      re_node_set_free (&local_sctx.limits);
+    }
+
+  return err;
+}
+
+
+#ifdef RE_ENABLE_I18N
+static int
+internal_function
+sift_states_iter_mb (const re_match_context_t *mctx, re_sift_context_t *sctx,
+		     int node_idx, int str_idx, int max_str_idx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  int naccepted;
+  /* Check the node can accept `multi byte'.  */
+  naccepted = check_node_accept_bytes (dfa, node_idx, &mctx->input, str_idx);
+  if (naccepted > 0 && str_idx + naccepted <= max_str_idx &&
+      !STATE_NODE_CONTAINS (sctx->sifted_states[str_idx + naccepted],
+			    dfa->nexts[node_idx]))
+    /* The node can't accept the `multi byte', or the
+       destination was already thrown away, then the node
+       could't accept the current input `multi byte'.   */
+    naccepted = 0;
+  /* Otherwise, it is sure that the node could accept
+     `naccepted' bytes input.  */
+  return naccepted;
+}
+#endif /* RE_ENABLE_I18N */
+
+
+/* Functions for state transition.  */
+
+/* Return the next state to which the current state STATE will transit by
+   accepting the current input byte, and update STATE_LOG if necessary.
+   If STATE can accept a multibyte char/collating element/back reference
+   update the destination of STATE_LOG.  */
+
+static re_dfastate_t *
+internal_function
+transit_state (reg_errcode_t *err, re_match_context_t *mctx,
+	       re_dfastate_t *state)
+{
+  re_dfastate_t **trtable;
+  unsigned char ch;
+
+#ifdef RE_ENABLE_I18N
+  /* If the current state can accept multibyte.  */
+  if (BE (state->accept_mb, 0))
+    {
+      *err = transit_state_mb (mctx, state);
+      if (BE (*err != REG_NOERROR, 0))
+	return NULL;
+    }
+#endif /* RE_ENABLE_I18N */
+
+  /* Then decide the next state with the single byte.  */
+#if 0
+  if (0)
+    /* don't use transition table  */
+    return transit_state_sb (err, mctx, state);
+#endif
+
+  /* Use transition table  */
+  ch = re_string_fetch_byte (&mctx->input);
+  for (;;)
+    {
+      trtable = state->trtable;
+      if (BE (trtable != NULL, 1))
+	return trtable[ch];
+
+      trtable = state->word_trtable;
+      if (BE (trtable != NULL, 1))
+        {
+	  unsigned int context;
+	  context
+	    = re_string_context_at (&mctx->input,
+				    re_string_cur_idx (&mctx->input) - 1,
+				    mctx->eflags);
+	  if (IS_WORD_CONTEXT (context))
+	    return trtable[ch + SBC_MAX];
+	  else
+	    return trtable[ch];
+	}
+
+      if (!build_trtable (mctx->dfa, state))
+	{
+	  *err = REG_ESPACE;
+	  return NULL;
+	}
+
+      /* Retry, we now have a transition table.  */
+    }
+}
+
+/* Update the state_log if we need */
+re_dfastate_t *
+internal_function
+merge_state_with_log (reg_errcode_t *err, re_match_context_t *mctx,
+		      re_dfastate_t *next_state)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  int cur_idx = re_string_cur_idx (&mctx->input);
+
+  if (cur_idx > mctx->state_log_top)
+    {
+      mctx->state_log[cur_idx] = next_state;
+      mctx->state_log_top = cur_idx;
+    }
+  else if (mctx->state_log[cur_idx] == 0)
+    {
+      mctx->state_log[cur_idx] = next_state;
+    }
+  else
+    {
+      re_dfastate_t *pstate;
+      unsigned int context;
+      re_node_set next_nodes, *log_nodes, *table_nodes = NULL;
+      /* If (state_log[cur_idx] != 0), it implies that cur_idx is
+         the destination of a multibyte char/collating element/
+         back reference.  Then the next state is the union set of
+         these destinations and the results of the transition table.  */
+      pstate = mctx->state_log[cur_idx];
+      log_nodes = pstate->entrance_nodes;
+      if (next_state != NULL)
+        {
+          table_nodes = next_state->entrance_nodes;
+          *err = re_node_set_init_union (&next_nodes, table_nodes,
+					     log_nodes);
+          if (BE (*err != REG_NOERROR, 0))
+	    return NULL;
+        }
+      else
+        next_nodes = *log_nodes;
+      /* Note: We already add the nodes of the initial state,
+	 then we don't need to add them here.  */
+
+      context = re_string_context_at (&mctx->input,
+				      re_string_cur_idx (&mctx->input) - 1,
+				      mctx->eflags);
+      next_state = mctx->state_log[cur_idx]
+        = re_acquire_state_context (err, dfa, &next_nodes, context);
+      /* We don't need to check errors here, since the return value of
+         this function is next_state and ERR is already set.  */
+
+      if (table_nodes != NULL)
+        re_node_set_free (&next_nodes);
+    }
+
+  if (BE (dfa->nbackref, 0) && next_state != NULL)
+    {
+      /* Check OP_OPEN_SUBEXP in the current state in case that we use them
+	 later.  We must check them here, since the back references in the
+	 next state might use them.  */
+      *err = check_subexp_matching_top (mctx, &next_state->nodes,
+					cur_idx);
+      if (BE (*err != REG_NOERROR, 0))
+	return NULL;
+
+      /* If the next state has back references.  */
+      if (next_state->has_backref)
+	{
+	  *err = transit_state_bkref (mctx, &next_state->nodes);
+	  if (BE (*err != REG_NOERROR, 0))
+	    return NULL;
+	  next_state = mctx->state_log[cur_idx];
+	}
+    }
+
+  return next_state;
+}
+
+/* Skip bytes in the input that correspond to part of a
+   multi-byte match, then look in the log for a state
+   from which to restart matching.  */
+re_dfastate_t *
+internal_function
+find_recover_state (reg_errcode_t *err, re_match_context_t *mctx)
+{
+  re_dfastate_t *cur_state;
+  do
+    {
+      int max = mctx->state_log_top;
+      int cur_str_idx = re_string_cur_idx (&mctx->input);
+
+      do
+	{
+          if (++cur_str_idx > max)
+            return NULL;
+          re_string_skip_bytes (&mctx->input, 1);
+	}
+      while (mctx->state_log[cur_str_idx] == NULL);
+
+      cur_state = merge_state_with_log (err, mctx, NULL);
+    }
+  while (*err == REG_NOERROR && cur_state == NULL);
+  return cur_state;
+}
+
+/* Helper functions for transit_state.  */
+
+/* From the node set CUR_NODES, pick up the nodes whose types are
+   OP_OPEN_SUBEXP and which have corresponding back references in the regular
+   expression. And register them to use them later for evaluating the
+   correspoding back references.  */
+
+static reg_errcode_t
+internal_function
+check_subexp_matching_top (re_match_context_t *mctx, re_node_set *cur_nodes,
+			   int str_idx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  int node_idx;
+  reg_errcode_t err;
+
+  /* TODO: This isn't efficient.
+	   Because there might be more than one nodes whose types are
+	   OP_OPEN_SUBEXP and whose index is SUBEXP_IDX, we must check all
+	   nodes.
+	   E.g. RE: (a){2}  */
+  for (node_idx = 0; node_idx < cur_nodes->nelem; ++node_idx)
+    {
+      int node = cur_nodes->elems[node_idx];
+      if (dfa->nodes[node].type == OP_OPEN_SUBEXP
+	  && dfa->nodes[node].opr.idx < BITSET_WORD_BITS
+	  && (dfa->used_bkref_map
+	      & ((bitset_word_t) 1 << dfa->nodes[node].opr.idx)))
+	{
+	  err = match_ctx_add_subtop (mctx, node, str_idx);
+	  if (BE (err != REG_NOERROR, 0))
+	    return err;
+	}
+    }
+  return REG_NOERROR;
+}
+
+#if 0
+/* Return the next state to which the current state STATE will transit by
+   accepting the current input byte.  */
+
+static re_dfastate_t *
+transit_state_sb (reg_errcode_t *err, re_match_context_t *mctx,
+		  re_dfastate_t *state)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  re_node_set next_nodes;
+  re_dfastate_t *next_state;
+  int node_cnt, cur_str_idx = re_string_cur_idx (&mctx->input);
+  unsigned int context;
+
+  *err = re_node_set_alloc (&next_nodes, state->nodes.nelem + 1);
+  if (BE (*err != REG_NOERROR, 0))
+    return NULL;
+  for (node_cnt = 0; node_cnt < state->nodes.nelem; ++node_cnt)
+    {
+      int cur_node = state->nodes.elems[node_cnt];
+      if (check_node_accept (mctx, dfa->nodes + cur_node, cur_str_idx))
+	{
+	  *err = re_node_set_merge (&next_nodes,
+				    dfa->eclosures + dfa->nexts[cur_node]);
+	  if (BE (*err != REG_NOERROR, 0))
+	    {
+	      re_node_set_free (&next_nodes);
+	      return NULL;
+	    }
+	}
+    }
+  context = re_string_context_at (&mctx->input, cur_str_idx, mctx->eflags);
+  next_state = re_acquire_state_context (err, dfa, &next_nodes, context);
+  /* We don't need to check errors here, since the return value of
+     this function is next_state and ERR is already set.  */
+
+  re_node_set_free (&next_nodes);
+  re_string_skip_bytes (&mctx->input, 1);
+  return next_state;
+}
+#endif
+
+#ifdef RE_ENABLE_I18N
+static reg_errcode_t
+internal_function
+transit_state_mb (re_match_context_t *mctx, re_dfastate_t *pstate)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err;
+  int i;
+
+  for (i = 0; i < pstate->nodes.nelem; ++i)
+    {
+      re_node_set dest_nodes, *new_nodes;
+      int cur_node_idx = pstate->nodes.elems[i];
+      int naccepted, dest_idx;
+      unsigned int context;
+      re_dfastate_t *dest_state;
+
+      if (!dfa->nodes[cur_node_idx].accept_mb)
+        continue;
+
+      if (dfa->nodes[cur_node_idx].constraint)
+	{
+	  context = re_string_context_at (&mctx->input,
+					  re_string_cur_idx (&mctx->input),
+					  mctx->eflags);
+	  if (NOT_SATISFY_NEXT_CONSTRAINT (dfa->nodes[cur_node_idx].constraint,
+					   context))
+	    continue;
+	}
+
+      /* How many bytes the node can accept?  */
+      naccepted = check_node_accept_bytes (dfa, cur_node_idx, &mctx->input,
+					   re_string_cur_idx (&mctx->input));
+      if (naccepted == 0)
+	continue;
+
+      /* The node can accepts `naccepted' bytes.  */
+      dest_idx = re_string_cur_idx (&mctx->input) + naccepted;
+      mctx->max_mb_elem_len = ((mctx->max_mb_elem_len < naccepted) ? naccepted
+			       : mctx->max_mb_elem_len);
+      err = clean_state_log_if_needed (mctx, dest_idx);
+      if (BE (err != REG_NOERROR, 0))
+	return err;
+#ifdef DEBUG
+      assert (dfa->nexts[cur_node_idx] != -1);
+#endif
+      new_nodes = dfa->eclosures + dfa->nexts[cur_node_idx];
+
+      dest_state = mctx->state_log[dest_idx];
+      if (dest_state == NULL)
+	dest_nodes = *new_nodes;
+      else
+	{
+	  err = re_node_set_init_union (&dest_nodes,
+					dest_state->entrance_nodes, new_nodes);
+	  if (BE (err != REG_NOERROR, 0))
+	    return err;
+	}
+      context = re_string_context_at (&mctx->input, dest_idx - 1,
+				      mctx->eflags);
+      mctx->state_log[dest_idx]
+	= re_acquire_state_context (&err, dfa, &dest_nodes, context);
+      if (dest_state != NULL)
+	re_node_set_free (&dest_nodes);
+      if (BE (mctx->state_log[dest_idx] == NULL && err != REG_NOERROR, 0))
+	return err;
+    }
+  return REG_NOERROR;
+}
+#endif /* RE_ENABLE_I18N */
+
+static reg_errcode_t
+internal_function
+transit_state_bkref (re_match_context_t *mctx, const re_node_set *nodes)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err;
+  int i;
+  int cur_str_idx = re_string_cur_idx (&mctx->input);
+
+  for (i = 0; i < nodes->nelem; ++i)
+    {
+      int dest_str_idx, prev_nelem, bkc_idx;
+      int node_idx = nodes->elems[i];
+      unsigned int context;
+      const re_token_t *node = dfa->nodes + node_idx;
+      re_node_set *new_dest_nodes;
+
+      /* Check whether `node' is a backreference or not.  */
+      if (node->type != OP_BACK_REF)
+	continue;
+
+      if (node->constraint)
+	{
+	  context = re_string_context_at (&mctx->input, cur_str_idx,
+					  mctx->eflags);
+	  if (NOT_SATISFY_NEXT_CONSTRAINT (node->constraint, context))
+	    continue;
+	}
+
+      /* `node' is a backreference.
+	 Check the substring which the substring matched.  */
+      bkc_idx = mctx->nbkref_ents;
+      err = get_subexp (mctx, node_idx, cur_str_idx);
+      if (BE (err != REG_NOERROR, 0))
+	goto free_return;
+
+      /* And add the epsilon closures (which is `new_dest_nodes') of
+	 the backreference to appropriate state_log.  */
+#ifdef DEBUG
+      assert (dfa->nexts[node_idx] != -1);
+#endif
+      for (; bkc_idx < mctx->nbkref_ents; ++bkc_idx)
+	{
+	  int subexp_len;
+	  re_dfastate_t *dest_state;
+	  struct re_backref_cache_entry *bkref_ent;
+	  bkref_ent = mctx->bkref_ents + bkc_idx;
+	  if (bkref_ent->node != node_idx || bkref_ent->str_idx != cur_str_idx)
+	    continue;
+	  subexp_len = bkref_ent->subexp_to - bkref_ent->subexp_from;
+	  new_dest_nodes = (subexp_len == 0
+			    ? dfa->eclosures + dfa->edests[node_idx].elems[0]
+			    : dfa->eclosures + dfa->nexts[node_idx]);
+	  dest_str_idx = (cur_str_idx + bkref_ent->subexp_to
+			  - bkref_ent->subexp_from);
+	  context = re_string_context_at (&mctx->input, dest_str_idx - 1,
+					  mctx->eflags);
+	  dest_state = mctx->state_log[dest_str_idx];
+	  prev_nelem = ((mctx->state_log[cur_str_idx] == NULL) ? 0
+			: mctx->state_log[cur_str_idx]->nodes.nelem);
+	  /* Add `new_dest_node' to state_log.  */
+	  if (dest_state == NULL)
+	    {
+	      mctx->state_log[dest_str_idx]
+		= re_acquire_state_context (&err, dfa, new_dest_nodes,
+					    context);
+	      if (BE (mctx->state_log[dest_str_idx] == NULL
+		      && err != REG_NOERROR, 0))
+		goto free_return;
+	    }
+	  else
+	    {
+	      re_node_set dest_nodes;
+	      err = re_node_set_init_union (&dest_nodes,
+					    dest_state->entrance_nodes,
+					    new_dest_nodes);
+	      if (BE (err != REG_NOERROR, 0))
+		{
+		  re_node_set_free (&dest_nodes);
+		  goto free_return;
+		}
+	      mctx->state_log[dest_str_idx]
+		= re_acquire_state_context (&err, dfa, &dest_nodes, context);
+	      re_node_set_free (&dest_nodes);
+	      if (BE (mctx->state_log[dest_str_idx] == NULL
+		      && err != REG_NOERROR, 0))
+		goto free_return;
+	    }
+	  /* We need to check recursively if the backreference can epsilon
+	     transit.  */
+	  if (subexp_len == 0
+	      && mctx->state_log[cur_str_idx]->nodes.nelem > prev_nelem)
+	    {
+	      err = check_subexp_matching_top (mctx, new_dest_nodes,
+					       cur_str_idx);
+	      if (BE (err != REG_NOERROR, 0))
+		goto free_return;
+	      err = transit_state_bkref (mctx, new_dest_nodes);
+	      if (BE (err != REG_NOERROR, 0))
+		goto free_return;
+	    }
+	}
+    }
+  err = REG_NOERROR;
+ free_return:
+  return err;
+}
+
+/* Enumerate all the candidates which the backreference BKREF_NODE can match
+   at BKREF_STR_IDX, and register them by match_ctx_add_entry().
+   Note that we might collect inappropriate candidates here.
+   However, the cost of checking them strictly here is too high, then we
+   delay these checking for prune_impossible_nodes().  */
+
+static reg_errcode_t
+internal_function
+get_subexp (re_match_context_t *mctx, int bkref_node, int bkref_str_idx)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  int subexp_num, sub_top_idx;
+  const char *buf = (const char *) re_string_get_buffer (&mctx->input);
+  /* Return if we have already checked BKREF_NODE at BKREF_STR_IDX.  */
+  int cache_idx = search_cur_bkref_entry (mctx, bkref_str_idx);
+  if (cache_idx != -1)
+    {
+      const struct re_backref_cache_entry *entry
+	= mctx->bkref_ents + cache_idx;
+      do
+        if (entry->node == bkref_node)
+	  return REG_NOERROR; /* We already checked it.  */
+      while (entry++->more);
+    }
+
+  subexp_num = dfa->nodes[bkref_node].opr.idx;
+
+  /* For each sub expression  */
+  for (sub_top_idx = 0; sub_top_idx < mctx->nsub_tops; ++sub_top_idx)
+    {
+      reg_errcode_t err;
+      re_sub_match_top_t *sub_top = mctx->sub_tops[sub_top_idx];
+      re_sub_match_last_t *sub_last;
+      int sub_last_idx, sl_str, bkref_str_off;
+
+      if (dfa->nodes[sub_top->node].opr.idx != subexp_num)
+	continue; /* It isn't related.  */
+
+      sl_str = sub_top->str_idx;
+      bkref_str_off = bkref_str_idx;
+      /* At first, check the last node of sub expressions we already
+	 evaluated.  */
+      for (sub_last_idx = 0; sub_last_idx < sub_top->nlasts; ++sub_last_idx)
+	{
+	  int sl_str_diff;
+	  sub_last = sub_top->lasts[sub_last_idx];
+	  sl_str_diff = sub_last->str_idx - sl_str;
+	  /* The matched string by the sub expression match with the substring
+	     at the back reference?  */
+	  if (sl_str_diff > 0)
+	    {
+	      if (BE (bkref_str_off + sl_str_diff > mctx->input.valid_len, 0))
+		{
+		  /* Not enough chars for a successful match.  */
+		  if (bkref_str_off + sl_str_diff > mctx->input.len)
+		    break;
+
+		  err = clean_state_log_if_needed (mctx,
+						   bkref_str_off
+						   + sl_str_diff);
+		  if (BE (err != REG_NOERROR, 0))
+		    return err;
+		  buf = (const char *) re_string_get_buffer (&mctx->input);
+		}
+	      if (memcmp (buf + bkref_str_off, buf + sl_str, sl_str_diff) != 0)
+		/* We don't need to search this sub expression any more.  */
+		break;
+	    }
+	  bkref_str_off += sl_str_diff;
+	  sl_str += sl_str_diff;
+	  err = get_subexp_sub (mctx, sub_top, sub_last, bkref_node,
+				bkref_str_idx);
+
+	  /* Reload buf, since the preceding call might have reallocated
+	     the buffer.  */
+	  buf = (const char *) re_string_get_buffer (&mctx->input);
+
+	  if (err == REG_NOMATCH)
+	    continue;
+	  if (BE (err != REG_NOERROR, 0))
+	    return err;
+	}
+
+      if (sub_last_idx < sub_top->nlasts)
+	continue;
+      if (sub_last_idx > 0)
+	++sl_str;
+      /* Then, search for the other last nodes of the sub expression.  */
+      for (; sl_str <= bkref_str_idx; ++sl_str)
+	{
+	  int cls_node, sl_str_off;
+	  const re_node_set *nodes;
+	  sl_str_off = sl_str - sub_top->str_idx;
+	  /* The matched string by the sub expression match with the substring
+	     at the back reference?  */
+	  if (sl_str_off > 0)
+	    {
+	      if (BE (bkref_str_off >= mctx->input.valid_len, 0))
+		{
+		  /* If we are at the end of the input, we cannot match.  */
+		  if (bkref_str_off >= mctx->input.len)
+		    break;
+
+		  err = extend_buffers (mctx);
+		  if (BE (err != REG_NOERROR, 0))
+		    return err;
+
+		  buf = (const char *) re_string_get_buffer (&mctx->input);
+		}
+	      if (buf [bkref_str_off++] != buf[sl_str - 1])
+		break; /* We don't need to search this sub expression
+			  any more.  */
+	    }
+	  if (mctx->state_log[sl_str] == NULL)
+	    continue;
+	  /* Does this state have a ')' of the sub expression?  */
+	  nodes = &mctx->state_log[sl_str]->nodes;
+	  cls_node = find_subexp_node (dfa, nodes, subexp_num,
+				       OP_CLOSE_SUBEXP);
+	  if (cls_node == -1)
+	    continue; /* No.  */
+	  if (sub_top->path == NULL)
+	    {
+	      sub_top->path = calloc (sizeof (state_array_t),
+				      sl_str - sub_top->str_idx + 1);
+	      if (sub_top->path == NULL)
+		return REG_ESPACE;
+	    }
+	  /* Can the OP_OPEN_SUBEXP node arrive the OP_CLOSE_SUBEXP node
+	     in the current context?  */
+	  err = check_arrival (mctx, sub_top->path, sub_top->node,
+			       sub_top->str_idx, cls_node, sl_str,
+			       OP_CLOSE_SUBEXP);
+	  if (err == REG_NOMATCH)
+	      continue;
+	  if (BE (err != REG_NOERROR, 0))
+	      return err;
+	  sub_last = match_ctx_add_sublast (sub_top, cls_node, sl_str);
+	  if (BE (sub_last == NULL, 0))
+	    return REG_ESPACE;
+	  err = get_subexp_sub (mctx, sub_top, sub_last, bkref_node,
+				bkref_str_idx);
+	  if (err == REG_NOMATCH)
+	    continue;
+	}
+    }
+  return REG_NOERROR;
+}
+
+/* Helper functions for get_subexp().  */
+
+/* Check SUB_LAST can arrive to the back reference BKREF_NODE at BKREF_STR.
+   If it can arrive, register the sub expression expressed with SUB_TOP
+   and SUB_LAST.  */
+
+static reg_errcode_t
+internal_function
+get_subexp_sub (re_match_context_t *mctx, const re_sub_match_top_t *sub_top,
+		re_sub_match_last_t *sub_last, int bkref_node, int bkref_str)
+{
+  reg_errcode_t err;
+  int to_idx;
+  /* Can the subexpression arrive the back reference?  */
+  err = check_arrival (mctx, &sub_last->path, sub_last->node,
+		       sub_last->str_idx, bkref_node, bkref_str,
+		       OP_OPEN_SUBEXP);
+  if (err != REG_NOERROR)
+    return err;
+  err = match_ctx_add_entry (mctx, bkref_node, bkref_str, sub_top->str_idx,
+			     sub_last->str_idx);
+  if (BE (err != REG_NOERROR, 0))
+    return err;
+  to_idx = bkref_str + sub_last->str_idx - sub_top->str_idx;
+  return clean_state_log_if_needed (mctx, to_idx);
+}
+
+/* Find the first node which is '(' or ')' and whose index is SUBEXP_IDX.
+   Search '(' if FL_OPEN, or search ')' otherwise.
+   TODO: This function isn't efficient...
+	 Because there might be more than one nodes whose types are
+	 OP_OPEN_SUBEXP and whose index is SUBEXP_IDX, we must check all
+	 nodes.
+	 E.g. RE: (a){2}  */
+
+static int
+internal_function
+find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
+		  int subexp_idx, int type)
+{
+  int cls_idx;
+  for (cls_idx = 0; cls_idx < nodes->nelem; ++cls_idx)
+    {
+      int cls_node = nodes->elems[cls_idx];
+      const re_token_t *node = dfa->nodes + cls_node;
+      if (node->type == type
+	  && node->opr.idx == subexp_idx)
+	return cls_node;
+    }
+  return -1;
+}
+
+/* Check whether the node TOP_NODE at TOP_STR can arrive to the node
+   LAST_NODE at LAST_STR.  We record the path onto PATH since it will be
+   heavily reused.
+   Return REG_NOERROR if it can arrive, or REG_NOMATCH otherwise.  */
+
+static reg_errcode_t
+internal_function
+check_arrival (re_match_context_t *mctx, state_array_t *path, int top_node,
+	       int top_str, int last_node, int last_str, int type)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err = REG_NOERROR;
+  int subexp_num, backup_cur_idx, str_idx, null_cnt;
+  re_dfastate_t *cur_state = NULL;
+  re_node_set *cur_nodes, next_nodes;
+  re_dfastate_t **backup_state_log;
+  unsigned int context;
+
+  subexp_num = dfa->nodes[top_node].opr.idx;
+  /* Extend the buffer if we need.  */
+  if (BE (path->alloc < last_str + mctx->max_mb_elem_len + 1, 0))
+    {
+      re_dfastate_t **new_array;
+      int old_alloc = path->alloc;
+      path->alloc += last_str + mctx->max_mb_elem_len + 1;
+      new_array = re_realloc (path->array, re_dfastate_t *, path->alloc);
+      if (BE (new_array == NULL, 0))
+	{
+	  path->alloc = old_alloc;
+	  return REG_ESPACE;
+	}
+      path->array = new_array;
+      memset (new_array + old_alloc, '\0',
+	      sizeof (re_dfastate_t *) * (path->alloc - old_alloc));
+    }
+
+#ifdef __GNUC__ /* silly buggers. */
+  str_idx = path->next_idx ?: top_str;
+#else
+  str_idx = path->next_idx ? path->next_idx : top_str;
+#endif 
+
+  /* Temporary modify MCTX.  */
+  backup_state_log = mctx->state_log;
+  backup_cur_idx = mctx->input.cur_idx;
+  mctx->state_log = path->array;
+  mctx->input.cur_idx = str_idx;
+
+  /* Setup initial node set.  */
+  context = re_string_context_at (&mctx->input, str_idx - 1, mctx->eflags);
+  if (str_idx == top_str)
+    {
+      err = re_node_set_init_1 (&next_nodes, top_node);
+      if (BE (err != REG_NOERROR, 0))
+	return err;
+      err = check_arrival_expand_ecl (dfa, &next_nodes, subexp_num, type);
+      if (BE (err != REG_NOERROR, 0))
+	{
+	  re_node_set_free (&next_nodes);
+	  return err;
+	}
+    }
+  else
+    {
+      cur_state = mctx->state_log[str_idx];
+      if (cur_state && cur_state->has_backref)
+	{
+	  err = re_node_set_init_copy (&next_nodes, &cur_state->nodes);
+	  if (BE (err != REG_NOERROR, 0))
+	    return err;
+	}
+      else
+	re_node_set_init_empty (&next_nodes);
+    }
+  if (str_idx == top_str || (cur_state && cur_state->has_backref))
+    {
+      if (next_nodes.nelem)
+	{
+	  err = expand_bkref_cache (mctx, &next_nodes, str_idx,
+				    subexp_num, type);
+	  if (BE (err != REG_NOERROR, 0))
+	    {
+	      re_node_set_free (&next_nodes);
+	      return err;
+	    }
+	}
+      cur_state = re_acquire_state_context (&err, dfa, &next_nodes, context);
+      if (BE (cur_state == NULL && err != REG_NOERROR, 0))
+	{
+	  re_node_set_free (&next_nodes);
+	  return err;
+	}
+      mctx->state_log[str_idx] = cur_state;
+    }
+
+  for (null_cnt = 0; str_idx < last_str && null_cnt <= mctx->max_mb_elem_len;)
+    {
+      re_node_set_empty (&next_nodes);
+      if (mctx->state_log[str_idx + 1])
+	{
+	  err = re_node_set_merge (&next_nodes,
+				   &mctx->state_log[str_idx + 1]->nodes);
+	  if (BE (err != REG_NOERROR, 0))
+	    {
+	      re_node_set_free (&next_nodes);
+	      return err;
+	    }
+	}
+      if (cur_state)
+	{
+	  err = check_arrival_add_next_nodes (mctx, str_idx,
+					      &cur_state->non_eps_nodes,
+					      &next_nodes);
+	  if (BE (err != REG_NOERROR, 0))
+	    {
+	      re_node_set_free (&next_nodes);
+	      return err;
+	    }
+	}
+      ++str_idx;
+      if (next_nodes.nelem)
+	{
+	  err = check_arrival_expand_ecl (dfa, &next_nodes, subexp_num, type);
+	  if (BE (err != REG_NOERROR, 0))
+	    {
+	      re_node_set_free (&next_nodes);
+	      return err;
+	    }
+	  err = expand_bkref_cache (mctx, &next_nodes, str_idx,
+				    subexp_num, type);
+	  if (BE (err != REG_NOERROR, 0))
+	    {
+	      re_node_set_free (&next_nodes);
+	      return err;
+	    }
+	}
+      context = re_string_context_at (&mctx->input, str_idx - 1, mctx->eflags);
+      cur_state = re_acquire_state_context (&err, dfa, &next_nodes, context);
+      if (BE (cur_state == NULL && err != REG_NOERROR, 0))
+	{
+	  re_node_set_free (&next_nodes);
+	  return err;
+	}
+      mctx->state_log[str_idx] = cur_state;
+      null_cnt = cur_state == NULL ? null_cnt + 1 : 0;
+    }
+  re_node_set_free (&next_nodes);
+  cur_nodes = (mctx->state_log[last_str] == NULL ? NULL
+	       : &mctx->state_log[last_str]->nodes);
+  path->next_idx = str_idx;
+
+  /* Fix MCTX.  */
+  mctx->state_log = backup_state_log;
+  mctx->input.cur_idx = backup_cur_idx;
+
+  /* Then check the current node set has the node LAST_NODE.  */
+  if (cur_nodes != NULL && re_node_set_contains (cur_nodes, last_node))
+    return REG_NOERROR;
+
+  return REG_NOMATCH;
+}
+
+/* Helper functions for check_arrival.  */
+
+/* Calculate the destination nodes of CUR_NODES at STR_IDX, and append them
+   to NEXT_NODES.
+   TODO: This function is similar to the functions transit_state*(),
+	 however this function has many additional works.
+	 Can't we unify them?  */
+
+static reg_errcode_t
+internal_function
+check_arrival_add_next_nodes (re_match_context_t *mctx, int str_idx,
+			      re_node_set *cur_nodes, re_node_set *next_nodes)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  int result;
+  int cur_idx;
+  reg_errcode_t err = REG_NOERROR;
+  re_node_set union_set;
+  re_node_set_init_empty (&union_set);
+  for (cur_idx = 0; cur_idx < cur_nodes->nelem; ++cur_idx)
+    {
+      int naccepted = 0;
+      int cur_node = cur_nodes->elems[cur_idx];
+#ifdef DEBUG
+      re_token_type_t type = dfa->nodes[cur_node].type;
+      assert (!IS_EPSILON_NODE (type));
+#endif
+#ifdef RE_ENABLE_I18N
+      /* If the node may accept `multi byte'.  */
+      if (dfa->nodes[cur_node].accept_mb)
+	{
+	  naccepted = check_node_accept_bytes (dfa, cur_node, &mctx->input,
+					       str_idx);
+	  if (naccepted > 1)
+	    {
+	      re_dfastate_t *dest_state;
+	      int next_node = dfa->nexts[cur_node];
+	      int next_idx = str_idx + naccepted;
+	      dest_state = mctx->state_log[next_idx];
+	      re_node_set_empty (&union_set);
+	      if (dest_state)
+		{
+		  err = re_node_set_merge (&union_set, &dest_state->nodes);
+		  if (BE (err != REG_NOERROR, 0))
+		    {
+		      re_node_set_free (&union_set);
+		      return err;
+		    }
+		}
+	      result = re_node_set_insert (&union_set, next_node);
+	      if (BE (result < 0, 0))
+		{
+		  re_node_set_free (&union_set);
+		  return REG_ESPACE;
+		}
+	      mctx->state_log[next_idx] = re_acquire_state (&err, dfa,
+							    &union_set);
+	      if (BE (mctx->state_log[next_idx] == NULL
+		      && err != REG_NOERROR, 0))
+		{
+		  re_node_set_free (&union_set);
+		  return err;
+		}
+	    }
+	}
+#endif /* RE_ENABLE_I18N */
+      if (naccepted
+	  || check_node_accept (mctx, dfa->nodes + cur_node, str_idx))
+	{
+	  result = re_node_set_insert (next_nodes, dfa->nexts[cur_node]);
+	  if (BE (result < 0, 0))
+	    {
+	      re_node_set_free (&union_set);
+	      return REG_ESPACE;
+	    }
+	}
+    }
+  re_node_set_free (&union_set);
+  return REG_NOERROR;
+}
+
+/* For all the nodes in CUR_NODES, add the epsilon closures of them to
+   CUR_NODES, however exclude the nodes which are:
+    - inside the sub expression whose number is EX_SUBEXP, if FL_OPEN.
+    - out of the sub expression whose number is EX_SUBEXP, if !FL_OPEN.
+*/
+
+static reg_errcode_t
+internal_function
+check_arrival_expand_ecl (const re_dfa_t *dfa, re_node_set *cur_nodes,
+			  int ex_subexp, int type)
+{
+  reg_errcode_t err;
+  int idx, outside_node;
+  re_node_set new_nodes;
+#ifdef DEBUG
+  assert (cur_nodes->nelem);
+#endif
+  err = re_node_set_alloc (&new_nodes, cur_nodes->nelem);
+  if (BE (err != REG_NOERROR, 0))
+    return err;
+  /* Create a new node set NEW_NODES with the nodes which are epsilon
+     closures of the node in CUR_NODES.  */
+
+  for (idx = 0; idx < cur_nodes->nelem; ++idx)
+    {
+      int cur_node = cur_nodes->elems[idx];
+      const re_node_set *eclosure = dfa->eclosures + cur_node;
+      outside_node = find_subexp_node (dfa, eclosure, ex_subexp, type);
+      if (outside_node == -1)
+	{
+	  /* There are no problematic nodes, just merge them.  */
+	  err = re_node_set_merge (&new_nodes, eclosure);
+	  if (BE (err != REG_NOERROR, 0))
+	    {
+	      re_node_set_free (&new_nodes);
+	      return err;
+	    }
+	}
+      else
+	{
+	  /* There are problematic nodes, re-calculate incrementally.  */
+	  err = check_arrival_expand_ecl_sub (dfa, &new_nodes, cur_node,
+					      ex_subexp, type);
+	  if (BE (err != REG_NOERROR, 0))
+	    {
+	      re_node_set_free (&new_nodes);
+	      return err;
+	    }
+	}
+    }
+  re_node_set_free (cur_nodes);
+  *cur_nodes = new_nodes;
+  return REG_NOERROR;
+}
+
+/* Helper function for check_arrival_expand_ecl.
+   Check incrementally the epsilon closure of TARGET, and if it isn't
+   problematic append it to DST_NODES.  */
+
+static reg_errcode_t
+internal_function
+check_arrival_expand_ecl_sub (const re_dfa_t *dfa, re_node_set *dst_nodes,
+			      int target, int ex_subexp, int type)
+{
+  int cur_node;
+  for (cur_node = target; !re_node_set_contains (dst_nodes, cur_node);)
+    {
+      int err;
+
+      if (dfa->nodes[cur_node].type == type
+	  && dfa->nodes[cur_node].opr.idx == ex_subexp)
+	{
+	  if (type == OP_CLOSE_SUBEXP)
+	    {
+	      err = re_node_set_insert (dst_nodes, cur_node);
+	      if (BE (err == -1, 0))
+		return REG_ESPACE;
+	    }
+	  break;
+	}
+      err = re_node_set_insert (dst_nodes, cur_node);
+      if (BE (err == -1, 0))
+	return REG_ESPACE;
+      if (dfa->edests[cur_node].nelem == 0)
+	break;
+      if (dfa->edests[cur_node].nelem == 2)
+	{
+	  err = check_arrival_expand_ecl_sub (dfa, dst_nodes,
+					      dfa->edests[cur_node].elems[1],
+					      ex_subexp, type);
+	  if (BE (err != REG_NOERROR, 0))
+	    return err;
+	}
+      cur_node = dfa->edests[cur_node].elems[0];
+    }
+  return REG_NOERROR;
+}
+
+
+/* For all the back references in the current state, calculate the
+   destination of the back references by the appropriate entry
+   in MCTX->BKREF_ENTS.  */
+
+static reg_errcode_t
+internal_function
+expand_bkref_cache (re_match_context_t *mctx, re_node_set *cur_nodes,
+		    int cur_str, int subexp_num, int type)
+{
+  const re_dfa_t *const dfa = mctx->dfa;
+  reg_errcode_t err;
+  int cache_idx_start = search_cur_bkref_entry (mctx, cur_str);
+  struct re_backref_cache_entry *ent;
+
+  if (cache_idx_start == -1)
+    return REG_NOERROR;
+
+ restart:
+  ent = mctx->bkref_ents + cache_idx_start;
+  do
+    {
+      int to_idx, next_node;
+
+      /* Is this entry ENT is appropriate?  */
+      if (!re_node_set_contains (cur_nodes, ent->node))
+	continue; /* No.  */
+
+      to_idx = cur_str + ent->subexp_to - ent->subexp_from;
+      /* Calculate the destination of the back reference, and append it
+	 to MCTX->STATE_LOG.  */
+      if (to_idx == cur_str)
+	{
+	  /* The backreference did epsilon transit, we must re-check all the
+	     node in the current state.  */
+	  re_node_set new_dests;
+	  reg_errcode_t err2, err3;
+	  next_node = dfa->edests[ent->node].elems[0];
+	  if (re_node_set_contains (cur_nodes, next_node))
+	    continue;
+	  err = re_node_set_init_1 (&new_dests, next_node);
+	  err2 = check_arrival_expand_ecl (dfa, &new_dests, subexp_num, type);
+	  err3 = re_node_set_merge (cur_nodes, &new_dests);
+	  re_node_set_free (&new_dests);
+	  if (BE (err != REG_NOERROR || err2 != REG_NOERROR
+		  || err3 != REG_NOERROR, 0))
+	    {
+	      err = (err != REG_NOERROR ? err
+		     : (err2 != REG_NOERROR ? err2 : err3));
+	      return err;
+	    }
+	  /* TODO: It is still inefficient...  */
+	  goto restart;
+	}
+      else
+	{
+	  re_node_set union_set;
+	  next_node = dfa->nexts[ent->node];
+	  if (mctx->state_log[to_idx])
+	    {
+	      int ret;
+	      if (re_node_set_contains (&mctx->state_log[to_idx]->nodes,
+					next_node))
+		continue;
+	      err = re_node_set_init_copy (&union_set,
+					   &mctx->state_log[to_idx]->nodes);
+	      ret = re_node_set_insert (&union_set, next_node);
+	      if (BE (err != REG_NOERROR || ret < 0, 0))
+		{
+		  re_node_set_free (&union_set);
+		  err = err != REG_NOERROR ? err : REG_ESPACE;
+		  return err;
+		}
+	    }
+	  else
+	    {
+	      err = re_node_set_init_1 (&union_set, next_node);
+	      if (BE (err != REG_NOERROR, 0))
+		return err;
+	    }
+	  mctx->state_log[to_idx] = re_acquire_state (&err, dfa, &union_set);
+	  re_node_set_free (&union_set);
+	  if (BE (mctx->state_log[to_idx] == NULL
+		  && err != REG_NOERROR, 0))
+	    return err;
+	}
+    }
+  while (ent++->more);
+  return REG_NOERROR;
+}
+
+/* Build transition table for the state.
+   Return 1 if succeeded, otherwise return NULL.  */
+
+static int
+internal_function
+build_trtable (const re_dfa_t *dfa, re_dfastate_t *state)
+{
+  reg_errcode_t err;
+  int i, j, ch, need_word_trtable = 0;
+  bitset_word_t elem, mask;
+  bool dests_node_malloced = false;
+  bool dest_states_malloced = false;
+  int ndests; /* Number of the destination states from `state'.  */
+  re_dfastate_t **trtable;
+  re_dfastate_t **dest_states = NULL, **dest_states_word, **dest_states_nl;
+  re_node_set follows, *dests_node;
+  bitset_t *dests_ch;
+  bitset_t acceptable;
+
+  struct dests_alloc
+  {
+    re_node_set dests_node[SBC_MAX];
+    bitset_t dests_ch[SBC_MAX];
+  } *dests_alloc;
+
+  /* We build DFA states which corresponds to the destination nodes
+     from `state'.  `dests_node[i]' represents the nodes which i-th
+     destination state contains, and `dests_ch[i]' represents the
+     characters which i-th destination state accepts.  */
+  if (__libc_use_alloca (sizeof (struct dests_alloc)))
+    dests_alloc = (struct dests_alloc *) alloca (sizeof (struct dests_alloc));
+  else
+    {
+      dests_alloc = re_malloc (struct dests_alloc, 1);
+      if (BE (dests_alloc == NULL, 0))
+	return 0;
+      dests_node_malloced = true;
+    }
+  dests_node = dests_alloc->dests_node;
+  dests_ch = dests_alloc->dests_ch;
+
+  /* Initialize transiton table.  */
+  state->word_trtable = state->trtable = NULL;
+
+  /* At first, group all nodes belonging to `state' into several
+     destinations.  */
+  ndests = group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch);
+  if (BE (ndests <= 0, 0))
+    {
+      if (dests_node_malloced)
+	free (dests_alloc);
+      /* Return 0 in case of an error, 1 otherwise.  */
+      if (ndests == 0)
+	{
+	  state->trtable = (re_dfastate_t **)
+	    calloc (sizeof (re_dfastate_t *), SBC_MAX);
+	  return 1;
+	}
+      return 0;
+    }
+
+  err = re_node_set_alloc (&follows, ndests + 1);
+  if (BE (err != REG_NOERROR, 0))
+    goto out_free;
+
+  if (__libc_use_alloca ((sizeof (re_node_set) + sizeof (bitset_t)) * SBC_MAX
+			 + ndests * 3 * sizeof (re_dfastate_t *)))
+    dest_states = (re_dfastate_t **)
+      alloca (ndests * 3 * sizeof (re_dfastate_t *));
+  else
+    {
+      dest_states = (re_dfastate_t **)
+	malloc (ndests * 3 * sizeof (re_dfastate_t *));
+      if (BE (dest_states == NULL, 0))
+	{
+out_free:
+	  if (dest_states_malloced)
+	    free (dest_states);
+	  re_node_set_free (&follows);
+	  for (i = 0; i < ndests; ++i)
+	    re_node_set_free (dests_node + i);
+	  if (dests_node_malloced)
+	    free (dests_alloc);
+	  return 0;
+	}
+      dest_states_malloced = true;
+    }
+  dest_states_word = dest_states + ndests;
+  dest_states_nl = dest_states_word + ndests;
+  bitset_empty (acceptable);
+
+  /* Then build the states for all destinations.  */
+  for (i = 0; i < ndests; ++i)
+    {
+      int next_node;
+      re_node_set_empty (&follows);
+      /* Merge the follows of this destination states.  */
+      for (j = 0; j < dests_node[i].nelem; ++j)
+	{
+	  next_node = dfa->nexts[dests_node[i].elems[j]];
+	  if (next_node != -1)
+	    {
+	      err = re_node_set_merge (&follows, dfa->eclosures + next_node);
+	      if (BE (err != REG_NOERROR, 0))
+		goto out_free;
+	    }
+	}
+      dest_states[i] = re_acquire_state_context (&err, dfa, &follows, 0);
+      if (BE (dest_states[i] == NULL && err != REG_NOERROR, 0))
+	goto out_free;
+      /* If the new state has context constraint,
+	 build appropriate states for these contexts.  */
+      if (dest_states[i]->has_constraint)
+	{
+	  dest_states_word[i] = re_acquire_state_context (&err, dfa, &follows,
+							  CONTEXT_WORD);
+	  if (BE (dest_states_word[i] == NULL && err != REG_NOERROR, 0))
+	    goto out_free;
+
+	  if (dest_states[i] != dest_states_word[i] && dfa->mb_cur_max > 1)
+	    need_word_trtable = 1;
+
+	  dest_states_nl[i] = re_acquire_state_context (&err, dfa, &follows,
+							CONTEXT_NEWLINE);
+	  if (BE (dest_states_nl[i] == NULL && err != REG_NOERROR, 0))
+	    goto out_free;
+ 	}
+      else
+	{
+	  dest_states_word[i] = dest_states[i];
+	  dest_states_nl[i] = dest_states[i];
+	}
+      bitset_merge (acceptable, dests_ch[i]);
+    }
+
+  if (!BE (need_word_trtable, 0))
+    {
+      /* We don't care about whether the following character is a word
+	 character, or we are in a single-byte character set so we can
+	 discern by looking at the character code: allocate a
+	 256-entry transition table.  */
+      trtable = state->trtable =
+	(re_dfastate_t **) calloc (sizeof (re_dfastate_t *), SBC_MAX);
+      if (BE (trtable == NULL, 0))
+	goto out_free;
+
+      /* For all characters ch...:  */
+      for (i = 0; i < BITSET_WORDS; ++i)
+	for (ch = i * BITSET_WORD_BITS, elem = acceptable[i], mask = 1;
+	     elem;
+	     mask <<= 1, elem >>= 1, ++ch)
+	  if (BE (elem & 1, 0))
+	    {
+	      /* There must be exactly one destination which accepts
+		 character ch.  See group_nodes_into_DFAstates.  */
+	      for (j = 0; (dests_ch[j][i] & mask) == 0; ++j)
+		;
+
+	      /* j-th destination accepts the word character ch.  */
+	      if (dfa->word_char[i] & mask)
+		trtable[ch] = dest_states_word[j];
+	      else
+		trtable[ch] = dest_states[j];
+	    }
+    }
+  else
+    {
+      /* We care about whether the following character is a word
+	 character, and we are in a multi-byte character set: discern
+	 by looking at the character code: build two 256-entry
+	 transition tables, one starting at trtable[0] and one
+	 starting at trtable[SBC_MAX].  */
+      trtable = state->word_trtable =
+	(re_dfastate_t **) calloc (sizeof (re_dfastate_t *), 2 * SBC_MAX);
+      if (BE (trtable == NULL, 0))
+	goto out_free;
+
+      /* For all characters ch...:  */
+      for (i = 0; i < BITSET_WORDS; ++i)
+	for (ch = i * BITSET_WORD_BITS, elem = acceptable[i], mask = 1;
+	     elem;
+	     mask <<= 1, elem >>= 1, ++ch)
+	  if (BE (elem & 1, 0))
+	    {
+	      /* There must be exactly one destination which accepts
+		 character ch.  See group_nodes_into_DFAstates.  */
+	      for (j = 0; (dests_ch[j][i] & mask) == 0; ++j)
+		;
+
+	      /* j-th destination accepts the word character ch.  */
+	      trtable[ch] = dest_states[j];
+	      trtable[ch + SBC_MAX] = dest_states_word[j];
+	    }
+    }
+
+  /* new line */
+  if (bitset_contain (acceptable, NEWLINE_CHAR))
+    {
+      /* The current state accepts newline character.  */
+      for (j = 0; j < ndests; ++j)
+	if (bitset_contain (dests_ch[j], NEWLINE_CHAR))
+	  {
+	    /* k-th destination accepts newline character.  */
+	    trtable[NEWLINE_CHAR] = dest_states_nl[j];
+	    if (need_word_trtable)
+	      trtable[NEWLINE_CHAR + SBC_MAX] = dest_states_nl[j];
+	    /* There must be only one destination which accepts
+	       newline.  See group_nodes_into_DFAstates.  */
+	    break;
+	  }
+    }
+
+  if (dest_states_malloced)
+    free (dest_states);
+
+  re_node_set_free (&follows);
+  for (i = 0; i < ndests; ++i)
+    re_node_set_free (dests_node + i);
+
+  if (dests_node_malloced)
+    free (dests_alloc);
+
+  return 1;
+}
+
+/* Group all nodes belonging to STATE into several destinations.
+   Then for all destinations, set the nodes belonging to the destination
+   to DESTS_NODE[i] and set the characters accepted by the destination
+   to DEST_CH[i].  This function return the number of destinations.  */
+
+static int
+internal_function
+group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
+			    re_node_set *dests_node, bitset_t *dests_ch)
+{
+  reg_errcode_t err;
+  int result;
+  int i, j, k;
+  int ndests; /* Number of the destinations from `state'.  */
+  bitset_t accepts; /* Characters a node can accept.  */
+  const re_node_set *cur_nodes = &state->nodes;
+  bitset_empty (accepts);
+  ndests = 0;
+
+  /* For all the nodes belonging to `state',  */
+  for (i = 0; i < cur_nodes->nelem; ++i)
+    {
+      re_token_t *node = &dfa->nodes[cur_nodes->elems[i]];
+      re_token_type_t type = node->type;
+      unsigned int constraint = node->constraint;
+
+      /* Enumerate all single byte character this node can accept.  */
+      if (type == CHARACTER)
+	bitset_set (accepts, node->opr.c);
+      else if (type == SIMPLE_BRACKET)
+	{
+	  bitset_merge (accepts, node->opr.sbcset);
+	}
+      else if (type == OP_PERIOD)
+	{
+#ifdef RE_ENABLE_I18N
+	  if (dfa->mb_cur_max > 1)
+	    bitset_merge (accepts, dfa->sb_char);
+	  else
+#endif
+	    bitset_set_all (accepts);
+	  if (!(dfa->syntax & RE_DOT_NEWLINE))
+	    bitset_clear (accepts, '\n');
+	  if (dfa->syntax & RE_DOT_NOT_NULL)
+	    bitset_clear (accepts, '\0');
+	}
+#ifdef RE_ENABLE_I18N
+      else if (type == OP_UTF8_PERIOD)
+        {
+	  memset (accepts, '\xff', sizeof (bitset_t) / 2);
+	  if (!(dfa->syntax & RE_DOT_NEWLINE))
+	    bitset_clear (accepts, '\n');
+	  if (dfa->syntax & RE_DOT_NOT_NULL)
+	    bitset_clear (accepts, '\0');
+        }
+#endif
+      else
+	continue;
+
+      /* Check the `accepts' and sift the characters which are not
+	 match it the context.  */
+      if (constraint)
+	{
+	  if (constraint & NEXT_NEWLINE_CONSTRAINT)
+	    {
+	      bool accepts_newline = bitset_contain (accepts, NEWLINE_CHAR);
+	      bitset_empty (accepts);
+	      if (accepts_newline)
+		bitset_set (accepts, NEWLINE_CHAR);
+	      else
+		continue;
+	    }
+	  if (constraint & NEXT_ENDBUF_CONSTRAINT)
+	    {
+	      bitset_empty (accepts);
+	      continue;
+	    }
+
+	  if (constraint & NEXT_WORD_CONSTRAINT)
+	    {
+	      bitset_word_t any_set = 0;
+	      if (type == CHARACTER && !node->word_char)
+		{
+		  bitset_empty (accepts);
+		  continue;
+		}
+#ifdef RE_ENABLE_I18N
+	      if (dfa->mb_cur_max > 1)
+		for (j = 0; j < BITSET_WORDS; ++j)
+		  any_set |= (accepts[j] &= (dfa->word_char[j] | ~dfa->sb_char[j]));
+	      else
+#endif
+		for (j = 0; j < BITSET_WORDS; ++j)
+		  any_set |= (accepts[j] &= dfa->word_char[j]);
+	      if (!any_set)
+		continue;
+	    }
+	  if (constraint & NEXT_NOTWORD_CONSTRAINT)
+	    {
+	      bitset_word_t any_set = 0;
+	      if (type == CHARACTER && node->word_char)
+		{
+		  bitset_empty (accepts);
+		  continue;
+		}
+#ifdef RE_ENABLE_I18N
+	      if (dfa->mb_cur_max > 1)
+		for (j = 0; j < BITSET_WORDS; ++j)
+		  any_set |= (accepts[j] &= ~(dfa->word_char[j] & dfa->sb_char[j]));
+	      else
+#endif
+		for (j = 0; j < BITSET_WORDS; ++j)
+		  any_set |= (accepts[j] &= ~dfa->word_char[j]);
+	      if (!any_set)
+		continue;
+	    }
+	}
+
+      /* Then divide `accepts' into DFA states, or create a new
+	 state.  Above, we make sure that accepts is not empty.  */
+      for (j = 0; j < ndests; ++j)
+	{
+	  bitset_t intersec; /* Intersection sets, see below.  */
+	  bitset_t remains;
+	  /* Flags, see below.  */
+	  bitset_word_t has_intersec, not_subset, not_consumed;
+
+	  /* Optimization, skip if this state doesn't accept the character.  */
+	  if (type == CHARACTER && !bitset_contain (dests_ch[j], node->opr.c))
+	    continue;
+
+	  /* Enumerate the intersection set of this state and `accepts'.  */
+	  has_intersec = 0;
+	  for (k = 0; k < BITSET_WORDS; ++k)
+	    has_intersec |= intersec[k] = accepts[k] & dests_ch[j][k];
+	  /* And skip if the intersection set is empty.  */
+	  if (!has_intersec)
+	    continue;
+
+	  /* Then check if this state is a subset of `accepts'.  */
+	  not_subset = not_consumed = 0;
+	  for (k = 0; k < BITSET_WORDS; ++k)
+	    {
+	      not_subset |= remains[k] = ~accepts[k] & dests_ch[j][k];
+	      not_consumed |= accepts[k] = accepts[k] & ~dests_ch[j][k];
+	    }
+
+	  /* If this state isn't a subset of `accepts', create a
+	     new group state, which has the `remains'. */
+	  if (not_subset)
+	    {
+	      bitset_copy (dests_ch[ndests], remains);
+	      bitset_copy (dests_ch[j], intersec);
+	      err = re_node_set_init_copy (dests_node + ndests, &dests_node[j]);
+	      if (BE (err != REG_NOERROR, 0))
+		goto error_return;
+	      ++ndests;
+	    }
+
+	  /* Put the position in the current group. */
+	  result = re_node_set_insert (&dests_node[j], cur_nodes->elems[i]);
+	  if (BE (result < 0, 0))
+	    goto error_return;
+
+	  /* If all characters are consumed, go to next node. */
+	  if (!not_consumed)
+	    break;
+	}
+      /* Some characters remain, create a new group. */
+      if (j == ndests)
+	{
+	  bitset_copy (dests_ch[ndests], accepts);
+	  err = re_node_set_init_1 (dests_node + ndests, cur_nodes->elems[i]);
+	  if (BE (err != REG_NOERROR, 0))
+	    goto error_return;
+	  ++ndests;
+	  bitset_empty (accepts);
+	}
+    }
+  return ndests;
+ error_return:
+  for (j = 0; j < ndests; ++j)
+    re_node_set_free (dests_node + j);
+  return -1;
+}
+
+#ifdef RE_ENABLE_I18N
+/* Check how many bytes the node `dfa->nodes[node_idx]' accepts.
+   Return the number of the bytes the node accepts.
+   STR_IDX is the current index of the input string.
+
+   This function handles the nodes which can accept one character, or
+   one collating element like '.', '[a-z]', opposite to the other nodes
+   can only accept one byte.  */
+
+static int
+internal_function
+check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
+			 const re_string_t *input, int str_idx)
+{
+  const re_token_t *node = dfa->nodes + node_idx;
+  int char_len, elem_len;
+  int i;
+
+  if (BE (node->type == OP_UTF8_PERIOD, 0))
+    {
+      unsigned char c = re_string_byte_at (input, str_idx), d;
+      if (BE (c < 0xc2, 1))
+	return 0;
+
+      if (str_idx + 2 > input->len)
+	return 0;
+
+      d = re_string_byte_at (input, str_idx + 1);
+      if (c < 0xe0)
+	return (d < 0x80 || d > 0xbf) ? 0 : 2;
+      else if (c < 0xf0)
+	{
+	  char_len = 3;
+	  if (c == 0xe0 && d < 0xa0)
+	    return 0;
+	}
+      else if (c < 0xf8)
+	{
+	  char_len = 4;
+	  if (c == 0xf0 && d < 0x90)
+	    return 0;
+	}
+      else if (c < 0xfc)
+	{
+	  char_len = 5;
+	  if (c == 0xf8 && d < 0x88)
+	    return 0;
+	}
+      else if (c < 0xfe)
+	{
+	  char_len = 6;
+	  if (c == 0xfc && d < 0x84)
+	    return 0;
+	}
+      else
+	return 0;
+
+      if (str_idx + char_len > input->len)
+	return 0;
+
+      for (i = 1; i < char_len; ++i)
+	{
+	  d = re_string_byte_at (input, str_idx + i);
+	  if (d < 0x80 || d > 0xbf)
+	    return 0;
+	}
+      return char_len;
+    }
+
+  char_len = re_string_char_size_at (input, str_idx);
+  if (node->type == OP_PERIOD)
+    {
+      if (char_len <= 1)
+        return 0;
+      /* FIXME: I don't think this if is needed, as both '\n'
+	 and '\0' are char_len == 1.  */
+      /* '.' accepts any one character except the following two cases.  */
+      if ((!(dfa->syntax & RE_DOT_NEWLINE) &&
+	   re_string_byte_at (input, str_idx) == '\n') ||
+	  ((dfa->syntax & RE_DOT_NOT_NULL) &&
+	   re_string_byte_at (input, str_idx) == '\0'))
+	return 0;
+      return char_len;
+    }
+
+  elem_len = re_string_elem_size_at (input, str_idx);
+  if ((elem_len <= 1 && char_len <= 1) || char_len == 0)
+    return 0;
+
+  if (node->type == COMPLEX_BRACKET)
+    {
+      const re_charset_t *cset = node->opr.mbcset;
+# ifdef _LIBC
+      const unsigned char *pin
+	= ((const unsigned char *) re_string_get_buffer (input) + str_idx);
+      int j;
+      uint32_t nrules;
+# endif /* _LIBC */
+      int match_len = 0;
+      wchar_t wc = ((cset->nranges || cset->nchar_classes || cset->nmbchars)
+		    ? re_string_wchar_at (input, str_idx) : 0);
+
+      /* match with multibyte character?  */
+      for (i = 0; i < cset->nmbchars; ++i)
+	if (wc == cset->mbchars[i])
+	  {
+	    match_len = char_len;
+	    goto check_node_accept_bytes_match;
+	  }
+      /* match with character_class?  */
+      for (i = 0; i < cset->nchar_classes; ++i)
+	{
+	  wctype_t wt = cset->char_classes[i];
+	  if (__iswctype (wc, wt))
+	    {
+	      match_len = char_len;
+	      goto check_node_accept_bytes_match;
+	    }
+	}
+
+# ifdef _LIBC
+      nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
+      if (nrules != 0)
+	{
+	  unsigned int in_collseq = 0;
+	  const int32_t *table, *indirect;
+	  const unsigned char *weights, *extra;
+	  const char *collseqwc;
+	  int32_t idx;
+	  /* This #include defines a local function!  */
+#  include <locale/weight.h>
+
+	  /* match with collating_symbol?  */
+	  if (cset->ncoll_syms)
+	    extra = (const unsigned char *)
+	      _NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB);
+	  for (i = 0; i < cset->ncoll_syms; ++i)
+	    {
+	      const unsigned char *coll_sym = extra + cset->coll_syms[i];
+	      /* Compare the length of input collating element and
+		 the length of current collating element.  */
+	      if (*coll_sym != elem_len)
+		continue;
+	      /* Compare each bytes.  */
+	      for (j = 0; j < *coll_sym; j++)
+		if (pin[j] != coll_sym[1 + j])
+		  break;
+	      if (j == *coll_sym)
+		{
+		  /* Match if every bytes is equal.  */
+		  match_len = j;
+		  goto check_node_accept_bytes_match;
+		}
+	    }
+
+	  if (cset->nranges)
+	    {
+	      if (elem_len <= char_len)
+		{
+		  collseqwc = _NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQWC);
+		  in_collseq = __collseq_table_lookup (collseqwc, wc);
+		}
+	      else
+		in_collseq = find_collation_sequence_value (pin, elem_len);
+	    }
+	  /* match with range expression?  */
+	  for (i = 0; i < cset->nranges; ++i)
+	    if (cset->range_starts[i] <= in_collseq
+		&& in_collseq <= cset->range_ends[i])
+	      {
+		match_len = elem_len;
+		goto check_node_accept_bytes_match;
+	      }
+
+	  /* match with equivalence_class?  */
+	  if (cset->nequiv_classes)
+	    {
+	      const unsigned char *cp = pin;
+	      table = (const int32_t *)
+		_NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
+	      weights = (const unsigned char *)
+		_NL_CURRENT (LC_COLLATE, _NL_COLLATE_WEIGHTMB);
+	      extra = (const unsigned char *)
+		_NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAMB);
+	      indirect = (const int32_t *)
+		_NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTMB);
+	      idx = findidx (&cp);
+	      if (idx > 0)
+		for (i = 0; i < cset->nequiv_classes; ++i)
+		  {
+		    int32_t equiv_class_idx = cset->equiv_classes[i];
+		    size_t weight_len = weights[idx];
+		    if (weight_len == weights[equiv_class_idx])
+		      {
+			int cnt = 0;
+			while (cnt <= weight_len
+			       && (weights[equiv_class_idx + 1 + cnt]
+				   == weights[idx + 1 + cnt]))
+			  ++cnt;
+			if (cnt > weight_len)
+			  {
+			    match_len = elem_len;
+			    goto check_node_accept_bytes_match;
+			  }
+		      }
+		  }
+	    }
+	}
+      else
+# endif /* _LIBC */
+	{
+	  /* match with range expression?  */
+#if __GNUC__ >= 2
+	  wchar_t cmp_buf[] = {L'\0', L'\0', wc, L'\0', L'\0', L'\0'};
+#else
+	  wchar_t cmp_buf[] = {L'\0', L'\0', L'\0', L'\0', L'\0', L'\0'};
+	  cmp_buf[2] = wc;
+#endif
+	  for (i = 0; i < cset->nranges; ++i)
+	    {
+	      cmp_buf[0] = cset->range_starts[i];
+	      cmp_buf[4] = cset->range_ends[i];
+	      if (wcscoll (cmp_buf, cmp_buf + 2) <= 0
+		  && wcscoll (cmp_buf + 2, cmp_buf + 4) <= 0)
+		{
+		  match_len = char_len;
+		  goto check_node_accept_bytes_match;
+		}
+	    }
+	}
+    check_node_accept_bytes_match:
+      if (!cset->non_match)
+	return match_len;
+      else
+	{
+	  if (match_len > 0)
+	    return 0;
+	  else
+	    return (elem_len > char_len) ? elem_len : char_len;
+	}
+    }
+  return 0;
+}
+
+# ifdef _LIBC
+static unsigned int
+internal_function
+find_collation_sequence_value (const unsigned char *mbs, size_t mbs_len)
+{
+  uint32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
+  if (nrules == 0)
+    {
+      if (mbs_len == 1)
+	{
+	  /* No valid character.  Match it as a single byte character.  */
+	  const unsigned char *collseq = (const unsigned char *)
+	    _NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQMB);
+	  return collseq[mbs[0]];
+	}
+      return UINT_MAX;
+    }
+  else
+    {
+      int32_t idx;
+      const unsigned char *extra = (const unsigned char *)
+	_NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB);
+      int32_t extrasize = (const unsigned char *)
+	_NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB + 1) - extra;
+
+      for (idx = 0; idx < extrasize;)
+	{
+	  int mbs_cnt, found = 0;
+	  int32_t elem_mbs_len;
+	  /* Skip the name of collating element name.  */
+	  idx = idx + extra[idx] + 1;
+	  elem_mbs_len = extra[idx++];
+	  if (mbs_len == elem_mbs_len)
+	    {
+	      for (mbs_cnt = 0; mbs_cnt < elem_mbs_len; ++mbs_cnt)
+		if (extra[idx + mbs_cnt] != mbs[mbs_cnt])
+		  break;
+	      if (mbs_cnt == elem_mbs_len)
+		/* Found the entry.  */
+		found = 1;
+	    }
+	  /* Skip the byte sequence of the collating element.  */
+	  idx += elem_mbs_len;
+	  /* Adjust for the alignment.  */
+	  idx = (idx + 3) & ~3;
+	  /* Skip the collation sequence value.  */
+	  idx += sizeof (uint32_t);
+	  /* Skip the wide char sequence of the collating element.  */
+	  idx = idx + sizeof (uint32_t) * (extra[idx] + 1);
+	  /* If we found the entry, return the sequence value.  */
+	  if (found)
+	    return *(uint32_t *) (extra + idx);
+	  /* Skip the collation sequence value.  */
+	  idx += sizeof (uint32_t);
+	}
+      return UINT_MAX;
+    }
+}
+# endif /* _LIBC */
+#endif /* RE_ENABLE_I18N */
+
+/* Check whether the node accepts the byte which is IDX-th
+   byte of the INPUT.  */
+
+static int
+internal_function
+check_node_accept (const re_match_context_t *mctx, const re_token_t *node,
+		   int idx)
+{
+  unsigned char ch;
+  ch = re_string_byte_at (&mctx->input, idx);
+  switch (node->type)
+    {
+    case CHARACTER:
+      if (node->opr.c != ch)
+        return 0;
+      break;
+
+    case SIMPLE_BRACKET:
+      if (!bitset_contain (node->opr.sbcset, ch))
+        return 0;
+      break;
+
+#ifdef RE_ENABLE_I18N
+    case OP_UTF8_PERIOD:
+      if (ch >= 0x80)
+        return 0;
+      /* FALLTHROUGH */
+#endif
+    case OP_PERIOD:
+      if ((ch == '\n' && !(mctx->dfa->syntax & RE_DOT_NEWLINE))
+	  || (ch == '\0' && (mctx->dfa->syntax & RE_DOT_NOT_NULL)))
+	return 0;
+      break;
+
+    default:
+      return 0;
+    }
+
+  if (node->constraint)
+    {
+      /* The node has constraints.  Check whether the current context
+	 satisfies the constraints.  */
+      unsigned int context = re_string_context_at (&mctx->input, idx,
+						   mctx->eflags);
+      if (NOT_SATISFY_NEXT_CONSTRAINT (node->constraint, context))
+	return 0;
+    }
+
+  return 1;
+}
+
+/* Extend the buffers, if the buffers have run out.  */
+
+static reg_errcode_t
+internal_function
+extend_buffers (re_match_context_t *mctx)
+{
+  reg_errcode_t ret;
+  re_string_t *pstr = &mctx->input;
+
+  /* Double the lengthes of the buffers.  */
+  ret = re_string_realloc_buffers (pstr, pstr->bufs_len * 2);
+  if (BE (ret != REG_NOERROR, 0))
+    return ret;
+
+  if (mctx->state_log != NULL)
+    {
+      /* And double the length of state_log.  */
+      /* XXX We have no indication of the size of this buffer.  If this
+	 allocation fail we have no indication that the state_log array
+	 does not have the right size.  */
+      re_dfastate_t **new_array = re_realloc (mctx->state_log, re_dfastate_t *,
+					      pstr->bufs_len + 1);
+      if (BE (new_array == NULL, 0))
+	return REG_ESPACE;
+      mctx->state_log = new_array;
+    }
+
+  /* Then reconstruct the buffers.  */
+  if (pstr->icase)
+    {
+#ifdef RE_ENABLE_I18N
+      if (pstr->mb_cur_max > 1)
+	{
+	  ret = build_wcs_upper_buffer (pstr);
+	  if (BE (ret != REG_NOERROR, 0))
+	    return ret;
+	}
+      else
+#endif /* RE_ENABLE_I18N  */
+	build_upper_buffer (pstr);
+    }
+  else
+    {
+#ifdef RE_ENABLE_I18N
+      if (pstr->mb_cur_max > 1)
+	build_wcs_buffer (pstr);
+      else
+#endif /* RE_ENABLE_I18N  */
+	{
+	  if (pstr->trans != NULL)
+	    re_string_translate_buffer (pstr);
+	}
+    }
+  return REG_NOERROR;
+}
+
+
+/* Functions for matching context.  */
+
+/* Initialize MCTX.  */
+
+static reg_errcode_t
+internal_function
+match_ctx_init (re_match_context_t *mctx, int eflags, int n)
+{
+  mctx->eflags = eflags;
+  mctx->match_last = -1;
+  if (n > 0)
+    {
+      mctx->bkref_ents = re_malloc (struct re_backref_cache_entry, n);
+      mctx->sub_tops = re_malloc (re_sub_match_top_t *, n);
+      if (BE (mctx->bkref_ents == NULL || mctx->sub_tops == NULL, 0))
+	return REG_ESPACE;
+    }
+  /* Already zero-ed by the caller.
+     else
+       mctx->bkref_ents = NULL;
+     mctx->nbkref_ents = 0;
+     mctx->nsub_tops = 0;  */
+  mctx->abkref_ents = n;
+  mctx->max_mb_elem_len = 1;
+  mctx->asub_tops = n;
+  return REG_NOERROR;
+}
+
+/* Clean the entries which depend on the current input in MCTX.
+   This function must be invoked when the matcher changes the start index
+   of the input, or changes the input string.  */
+
+static void
+internal_function
+match_ctx_clean (re_match_context_t *mctx)
+{
+  int st_idx;
+  for (st_idx = 0; st_idx < mctx->nsub_tops; ++st_idx)
+    {
+      int sl_idx;
+      re_sub_match_top_t *top = mctx->sub_tops[st_idx];
+      for (sl_idx = 0; sl_idx < top->nlasts; ++sl_idx)
+	{
+	  re_sub_match_last_t *last = top->lasts[sl_idx];
+	  re_free (last->path.array);
+	  re_free (last);
+	}
+      re_free (top->lasts);
+      if (top->path)
+	{
+	  re_free (top->path->array);
+	  re_free (top->path);
+	}
+      free (top);
+    }
+
+  mctx->nsub_tops = 0;
+  mctx->nbkref_ents = 0;
+}
+
+/* Free all the memory associated with MCTX.  */
+
+static void
+internal_function
+match_ctx_free (re_match_context_t *mctx)
+{
+  /* First, free all the memory associated with MCTX->SUB_TOPS.  */
+  match_ctx_clean (mctx);
+  re_free (mctx->sub_tops);
+  re_free (mctx->bkref_ents);
+}
+
+/* Add a new backreference entry to MCTX.
+   Note that we assume that caller never call this function with duplicate
+   entry, and call with STR_IDX which isn't smaller than any existing entry.
+*/
+
+static reg_errcode_t
+internal_function
+match_ctx_add_entry (re_match_context_t *mctx, int node, int str_idx, int from,
+		     int to)
+{
+  if (mctx->nbkref_ents >= mctx->abkref_ents)
+    {
+      struct re_backref_cache_entry* new_entry;
+      new_entry = re_realloc (mctx->bkref_ents, struct re_backref_cache_entry,
+			      mctx->abkref_ents * 2);
+      if (BE (new_entry == NULL, 0))
+	{
+	  re_free (mctx->bkref_ents);
+	  return REG_ESPACE;
+	}
+      mctx->bkref_ents = new_entry;
+      memset (mctx->bkref_ents + mctx->nbkref_ents, '\0',
+	      sizeof (struct re_backref_cache_entry) * mctx->abkref_ents);
+      mctx->abkref_ents *= 2;
+    }
+  if (mctx->nbkref_ents > 0
+      && mctx->bkref_ents[mctx->nbkref_ents - 1].str_idx == str_idx)
+    mctx->bkref_ents[mctx->nbkref_ents - 1].more = 1;
+
+  mctx->bkref_ents[mctx->nbkref_ents].node = node;
+  mctx->bkref_ents[mctx->nbkref_ents].str_idx = str_idx;
+  mctx->bkref_ents[mctx->nbkref_ents].subexp_from = from;
+  mctx->bkref_ents[mctx->nbkref_ents].subexp_to = to;
+
+  /* This is a cache that saves negative results of check_dst_limits_calc_pos.
+     If bit N is clear, means that this entry won't epsilon-transition to
+     an OP_OPEN_SUBEXP or OP_CLOSE_SUBEXP for the N+1-th subexpression.  If
+     it is set, check_dst_limits_calc_pos_1 will recurse and try to find one
+     such node.
+
+     A backreference does not epsilon-transition unless it is empty, so set
+     to all zeros if FROM != TO.  */
+  mctx->bkref_ents[mctx->nbkref_ents].eps_reachable_subexps_map
+    = (from == to ? ~0 : 0);
+
+  mctx->bkref_ents[mctx->nbkref_ents++].more = 0;
+  if (mctx->max_mb_elem_len < to - from)
+    mctx->max_mb_elem_len = to - from;
+  return REG_NOERROR;
+}
+
+/* Search for the first entry which has the same str_idx, or -1 if none is
+   found.  Note that MCTX->BKREF_ENTS is already sorted by MCTX->STR_IDX.  */
+
+static int
+internal_function
+search_cur_bkref_entry (const re_match_context_t *mctx, int str_idx)
+{
+  int left, right, mid, last;
+  last = right = mctx->nbkref_ents;
+  for (left = 0; left < right;)
+    {
+      mid = (left + right) / 2;
+      if (mctx->bkref_ents[mid].str_idx < str_idx)
+	left = mid + 1;
+      else
+	right = mid;
+    }
+  if (left < last && mctx->bkref_ents[left].str_idx == str_idx)
+    return left;
+  else
+    return -1;
+}
+
+/* Register the node NODE, whose type is OP_OPEN_SUBEXP, and which matches
+   at STR_IDX.  */
+
+static reg_errcode_t
+internal_function
+match_ctx_add_subtop (re_match_context_t *mctx, int node, int str_idx)
+{
+#ifdef DEBUG
+  assert (mctx->sub_tops != NULL);
+  assert (mctx->asub_tops > 0);
+#endif
+  if (BE (mctx->nsub_tops == mctx->asub_tops, 0))
+    {
+      int new_asub_tops = mctx->asub_tops * 2;
+      re_sub_match_top_t **new_array = re_realloc (mctx->sub_tops,
+						   re_sub_match_top_t *,
+						   new_asub_tops);
+      if (BE (new_array == NULL, 0))
+	return REG_ESPACE;
+      mctx->sub_tops = new_array;
+      mctx->asub_tops = new_asub_tops;
+    }
+  mctx->sub_tops[mctx->nsub_tops] = calloc (1, sizeof (re_sub_match_top_t));
+  if (BE (mctx->sub_tops[mctx->nsub_tops] == NULL, 0))
+    return REG_ESPACE;
+  mctx->sub_tops[mctx->nsub_tops]->node = node;
+  mctx->sub_tops[mctx->nsub_tops++]->str_idx = str_idx;
+  return REG_NOERROR;
+}
+
+/* Register the node NODE, whose type is OP_CLOSE_SUBEXP, and which matches
+   at STR_IDX, whose corresponding OP_OPEN_SUBEXP is SUB_TOP.  */
+
+static re_sub_match_last_t *
+internal_function
+match_ctx_add_sublast (re_sub_match_top_t *subtop, int node, int str_idx)
+{
+  re_sub_match_last_t *new_entry;
+  if (BE (subtop->nlasts == subtop->alasts, 0))
+    {
+      int new_alasts = 2 * subtop->alasts + 1;
+      re_sub_match_last_t **new_array = re_realloc (subtop->lasts,
+						    re_sub_match_last_t *,
+						    new_alasts);
+      if (BE (new_array == NULL, 0))
+	return NULL;
+      subtop->lasts = new_array;
+      subtop->alasts = new_alasts;
+    }
+  new_entry = calloc (1, sizeof (re_sub_match_last_t));
+  if (BE (new_entry != NULL, 1))
+    {
+      subtop->lasts[subtop->nlasts] = new_entry;
+      new_entry->node = node;
+      new_entry->str_idx = str_idx;
+      ++subtop->nlasts;
+    }
+  return new_entry;
+}
+
+static void
+internal_function
+sift_ctx_init (re_sift_context_t *sctx, re_dfastate_t **sifted_sts,
+	       re_dfastate_t **limited_sts, int last_node, int last_str_idx)
+{
+  sctx->sifted_states = sifted_sts;
+  sctx->limited_states = limited_sts;
+  sctx->last_node = last_node;
+  sctx->last_str_idx = last_str_idx;
+  re_node_set_init_empty (&sctx->limits);
+}
diff --git a/src/sed/lib/stdbool_.h b/src/sed/lib/stdbool_.h
new file mode 100644
index 0000000..978174e
--- /dev/null
+++ b/src/sed/lib/stdbool_.h
@@ -0,0 +1,47 @@
+/* Copyright (C) 2001-2002 Free Software Foundation, Inc.
+   Written by Bruno Haible <haible@clisp.cons.org>, 2001.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifndef _STDBOOL_H
+#define _STDBOOL_H
+
+/* ISO C 99 <stdbool.h> for platforms that lack it.  */
+
+/* 7.16. Boolean type and values */
+
+/* BeOS <sys/socket.h> already #defines false 0, true 1.  We use the same
+   definitions below, but temporarily we have to #undef them.  */
+#ifdef __BEOS__
+# undef false
+# undef true
+#endif
+
+/* For the sake of symbolic names in gdb, define _Bool as an enum type.  */
+#ifndef __cplusplus
+# if !@HAVE__BOOL@
+typedef enum { false = 0, true = 1 } _Bool;
+# endif
+#else
+typedef bool _Bool;
+#endif
+#define bool _Bool
+
+/* The other macros must be usable in preprocessor directives.  */
+#define false 0
+#define true 1
+#define __bool_true_false_are_defined 1
+
+#endif /* _STDBOOL_H */
diff --git a/src/sed/lib/strerror.c b/src/sed/lib/strerror.c
new file mode 100644
index 0000000..a18f2ac
--- /dev/null
+++ b/src/sed/lib/strerror.c
@@ -0,0 +1,52 @@
+/* strerror -- return a string corresponding to an error number.
+   This is a quickie version only intended as compatability glue
+   for systems which predate the ANSI C definition of the function;
+   the glibc version is recommended for more general use.
+
+   Copyright (C) 1998 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+#include "config.h"
+
+#ifndef HAVE_STRERROR
+
+# ifndef BOOTSTRAP
+#  include <stdio.h>
+# endif
+# ifdef HAVE_STRING_H
+#  include <string.h>
+# endif
+# include <errno.h>
+# undef strerror
+
+extern int sys_nerr;
+extern char *sys_errlist[];
+
+char *
+strerror(e)
+  int e;
+{
+  static char unknown_string[] =
+    "Unknown error code #xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
+
+  if (0<=e && e<sys_nerr)
+    return sys_errlist[e];
+  sprintf(unknown_string+20, "%d", e);
+  return unknown_string;
+}
+
+#endif /* !HAVE_STRERROR */
diff --git a/src/sed/lib/strverscmp.c b/src/sed/lib/strverscmp.c
new file mode 100644
index 0000000..5af38ef
--- /dev/null
+++ b/src/sed/lib/strverscmp.c
@@ -0,0 +1,132 @@
+/* Compare strings while treating digits characters numerically.
+   Copyright (C) 1997, 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jean-François Bignolles <bignolle@ecoledoc.ibp.fr>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <string.h>
+#include <ctype.h>
+
+/* states: S_N: normal, S_I: comparing integral part, S_F: comparing
+           fractional parts, S_Z: idem but with leading Zeroes only */
+#define S_N    0x0
+#define S_I    0x4
+#define S_F    0x8
+#define S_Z    0xC
+
+/* result_type: CMP: return diff; LEN: compare using len_diff/diff */
+#define CMP    2
+#define LEN    3
+
+
+/* ISDIGIT differs from isdigit, as follows:
+   - Its arg may be any int or unsigned int; it need not be an unsigned char.
+   - It's guaranteed to evaluate its argument exactly once.
+   - It's typically faster.
+   POSIX says that only '0' through '9' are digits.  Prefer ISDIGIT to
+   ISDIGIT_LOCALE unless it's important to use the locale's definition
+   of `digit' even when the host does not conform to POSIX.  */
+#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
+
+#undef __strverscmp
+#undef strverscmp
+
+#ifndef weak_alias
+# define __strverscmp strverscmp
+#endif
+
+/* Compare S1 and S2 as strings holding indices/version numbers,
+   returning less than, equal to or greater than zero if S1 is less than,
+   equal to or greater than S2 (for more info, see the texinfo doc).
+*/
+
+int
+__strverscmp (const char *s1, const char *s2)
+{
+  const unsigned char *p1 = (const unsigned char *) s1;
+  const unsigned char *p2 = (const unsigned char *) s2;
+  unsigned char c1, c2;
+  int state;
+  int diff;
+
+  /* Symbol(s)    0       [1-9]   others  (padding)
+     Transition   (10) 0  (01) d  (00) x  (11) -   */
+  static const unsigned int next_state[] =
+  {
+      /* state    x    d    0    - */
+      /* S_N */  S_N, S_I, S_Z, S_N,
+      /* S_I */  S_N, S_I, S_I, S_I,
+      /* S_F */  S_N, S_F, S_F, S_F,
+      /* S_Z */  S_N, S_F, S_Z, S_Z
+  };
+
+  static const int result_type[] =
+  {
+      /* state   x/x  x/d  x/0  x/-  d/x  d/d  d/0  d/-
+                 0/x  0/d  0/0  0/-  -/x  -/d  -/0  -/- */
+
+      /* S_N */  CMP, CMP, CMP, CMP, CMP, LEN, CMP, CMP,
+                 CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP,
+      /* S_I */  CMP, -1,  -1,  CMP,  1,  LEN, LEN, CMP,
+                  1,  LEN, LEN, CMP, CMP, CMP, CMP, CMP,
+      /* S_F */  CMP, CMP, CMP, CMP, CMP, LEN, CMP, CMP,
+                 CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP,
+      /* S_Z */  CMP,  1,   1,  CMP, -1,  CMP, CMP, CMP,
+                 -1,  CMP, CMP, CMP
+  };
+
+  if (p1 == p2)
+    return 0;
+
+  c1 = *p1++;
+  c2 = *p2++;
+  /* Hint: '0' is a digit too.  */
+  state = S_N | ((c1 == '0') + (ISDIGIT (c1) != 0));
+
+  while ((diff = c1 - c2) == 0 && c1 != '\0')
+    {
+      state = next_state[state];
+      c1 = *p1++;
+      c2 = *p2++;
+      state |= (c1 == '0') + (ISDIGIT (c1) != 0);
+    }
+
+  state = result_type[state << 2 | ((c2 == '0') + (ISDIGIT (c2) != 0))];
+
+  switch (state)
+    {
+    case CMP:
+      return diff;
+
+    case LEN:
+      while (ISDIGIT (*p1++))
+	if (!ISDIGIT (*p2++))
+	  return 1;
+
+      return ISDIGIT (*p2) ? -1 : diff;
+
+    default:
+      return state;
+    }
+}
+#ifdef weak_alias
+weak_alias (__strverscmp, strverscmp)
+#endif
diff --git a/src/sed/lib/strverscmp.h b/src/sed/lib/strverscmp.h
new file mode 100644
index 0000000..bb1ea1b
--- /dev/null
+++ b/src/sed/lib/strverscmp.h
@@ -0,0 +1,20 @@
+/* strverscmp.h -- compare strings holding indices/version numbers */
+
+#ifndef STRVERSCMP_H_
+# define STRVERSCMP_H_
+
+# if HAVE_CONFIG_H
+#  include <config.h>
+# endif
+
+# ifndef PARAMS
+#  if defined PROTOTYPES || (defined __STDC__ && __STDC__)
+#   define PARAMS(Args) Args
+#  else
+#   define PARAMS(Args) ()
+#  endif
+# endif
+
+int strverscmp PARAMS ((const char*, const char*));
+
+#endif /* not STRVERSCMP_H_ */
diff --git a/src/sed/lib/utils.c b/src/sed/lib/utils.c
new file mode 100644
index 0000000..41c61aa
--- /dev/null
+++ b/src/sed/lib/utils.c
@@ -0,0 +1,529 @@
+/*  Functions from hack's utils library.
+    Copyright (C) 1989, 1990, 1991, 1998, 1999, 2003
+    Free Software Foundation, Inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2, or (at your option)
+    any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#include "config.h"
+
+#include <stdio.h>
+
+#include <errno.h>
+#ifndef errno
+  extern int errno;
+#endif
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#else
+# include <string.h>
+#endif /* HAVE_STRINGS_H */
+
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif /* HAVE_STDLIB_H */
+
+#ifdef HAVE_UNISTD_H /* bird: for unlink on darwin */
+# include <unistd.h>
+#endif
+
+#include "utils.h"
+
+#ifdef KBUILD_OS_WINDOWS /* bird: Way faster console output! */
+# include "console.h"
+# define fwrite maybe_con_fwrite
+#endif
+
+const char *myname;
+
+/* Store information about files opened with ck_fopen
+   so that error messages from ck_fread, ck_fwrite, etc. can print the
+   name of the file that had the error */
+
+struct open_file
+  {
+    FILE *fp;
+    char *name;
+    struct open_file *link;
+    unsigned temp : 1;
+  };
+
+static struct open_file *open_files = NULL;
+static void do_ck_fclose P_((FILE *fp));
+
+/* Print an error message and exit */
+#if !defined __STDC__ || !(__STDC__-0)
+# include <varargs.h>
+# define VSTART(l,a)	va_start(l)
+void
+panic(str, va_alist)
+  char *str;
+  va_dcl
+#else /*__STDC__*/
+# include <stdarg.h>
+# define VSTART(l,a)	va_start(l, a)
+void
+panic(const char *str, ...)
+#endif /* __STDC__ */
+{
+  va_list iggy;
+
+  fprintf(stderr, "%s: ", myname);
+  VSTART(iggy, str);
+#ifndef HAVE_VPRINTF
+# ifndef HAVE_DOPRNT
+  fputs(str, stderr);	/* not great, but perhaps better than nothing... */
+# else /* HAVE_DOPRNT */
+  _doprnt(str, &iggy, stderr);
+# endif /* HAVE_DOPRNT */
+#else /* HAVE_VFPRINTF */
+  vfprintf(stderr, str, iggy);
+#endif /* HAVE_VFPRINTF */
+  va_end(iggy);
+  putc('\n', stderr);
+
+  /* Unlink the temporary files.  */
+  while (open_files)
+    {
+      if (open_files->temp)
+	{
+	  int fd = fileno (open_files->fp);
+	  fclose (open_files->fp);
+	  errno = 0;
+	  unlink (open_files->name);
+          if (errno != 0)
+            fprintf (stderr, _("cannot remove %s: %s"), open_files->name, strerror (errno));
+	}
+
+      open_files = open_files->link;
+    }
+
+  exit(4);
+}
+
+
+/* Internal routine to get a filename from open_files */
+static const char *utils_fp_name P_((FILE *fp));
+static const char *
+utils_fp_name(fp)
+  FILE *fp;
+{
+  struct open_file *p;
+
+  for (p=open_files; p; p=p->link)
+    if (p->fp == fp)
+      return p->name;
+  if (fp == stdin)
+    return "stdin";
+  else if (fp == stdout)
+    return "stdout";
+  else if (fp == stderr)
+    return "stderr";
+
+  return "<unknown>";
+}
+
+/* Panic on failing fopen */
+FILE *
+ck_fopen(name, mode, fail)
+  const char *name;
+  const char *mode;
+  bool fail;
+{
+  FILE *fp;
+  struct open_file *p;
+
+  fp = fopen (name, mode);
+  if (!fp)
+    {
+      if (fail)
+        panic(_("couldn't open file %s: %s"), name, strerror(errno));
+
+      return NULL;
+    }
+
+  for (p=open_files; p; p=p->link)
+    {
+      if (fp == p->fp)
+	{
+	  FREE(p->name);
+	  break;
+	}
+    }
+  if (!p)
+    {
+      p = MALLOC(1, struct open_file);
+      p->link = open_files;
+      open_files = p;
+    }
+  p->name = ck_strdup(name);
+  p->fp = fp;
+  p->temp = false;
+  return fp;
+}
+
+FILE *
+ck_mkstemp (p_filename, tmpdir, base)
+  char **p_filename;
+  char *base, *tmpdir;
+{
+  char *template;
+  FILE *fp;
+  int fd;
+  struct open_file *p;
+
+  if (tmpdir == NULL)
+    tmpdir = getenv("TMPDIR");
+  if (tmpdir == NULL)
+    {
+      tmpdir = getenv("TMP");
+      if (tmpdir == NULL)
+#ifdef P_tmpdir
+	tmpdir = P_tmpdir;
+#else
+	tmpdir = "/tmp";
+#endif
+    }
+
+  template = xmalloc (strlen (tmpdir) + strlen (base) + 8);
+  sprintf (template, "%s/%sXXXXXX", tmpdir, base);
+
+  fd = mkstemp (template);
+  if (fd == -1)
+    panic(_("couldn't open temporary file %s: %s"), template, strerror(errno));
+
+  *p_filename = template;
+  fp = fdopen (fd, "w");
+
+  p = MALLOC(1, struct open_file);
+  p->name = ck_strdup (template);
+  p->fp = fp;
+  p->temp = true;
+  p->link = open_files;
+  open_files = p;
+  return fp;
+}
+
+/* Panic on failing fwrite */
+void
+ck_fwrite(ptr, size, nmemb, stream)
+  const VOID *ptr;
+  size_t size;
+  size_t nmemb;
+  FILE *stream;
+{
+  clearerr(stream);
+  if (size && fwrite(ptr, size, nmemb, stream) != nmemb)
+    panic(ngettext("couldn't write %d item to %s: %s",
+		   "couldn't write %d items to %s: %s", nmemb), 
+		nmemb, utils_fp_name(stream), strerror(errno));
+}
+
+/* Panic on failing fread */
+size_t
+ck_fread(ptr, size, nmemb, stream)
+  VOID *ptr;
+  size_t size;
+  size_t nmemb;
+  FILE *stream;
+{
+  clearerr(stream);
+  if (size && (nmemb=fread(ptr, size, nmemb, stream)) <= 0 && ferror(stream))
+    panic(_("read error on %s: %s"), utils_fp_name(stream), strerror(errno));
+
+  return nmemb;
+}
+
+size_t
+ck_getline(text, buflen, stream)
+  char **text;
+  size_t *buflen;
+  FILE *stream;
+{
+  int result;
+  if (!ferror (stream))
+    result = getline (text, buflen, stream);
+
+  if (ferror (stream))
+    panic (_("read error on %s: %s"), utils_fp_name(stream), strerror(errno));
+
+  return result;
+}
+
+/* Panic on failing fflush */
+void
+ck_fflush(stream)
+  FILE *stream;
+{
+  clearerr(stream);
+  if (fflush(stream) == EOF && errno != EBADF)
+    panic("couldn't flush %s: %s", utils_fp_name(stream), strerror(errno));
+}
+
+/* Panic on failing fclose */
+void
+ck_fclose(stream)
+  FILE *stream;
+{
+  struct open_file r;
+  struct open_file *prev;
+  struct open_file *cur;
+
+  /* a NULL stream means to close all files */
+  r.link = open_files;
+  prev = &r;
+  while ( (cur = prev->link) )
+    {
+      if (!stream || stream == cur->fp)
+	{
+	  do_ck_fclose (cur->fp);
+	  prev->link = cur->link;
+	  FREE(cur->name);
+	  FREE(cur);
+	}
+      else
+	prev = cur;
+    }
+
+  open_files = r.link;
+
+  /* Also care about stdout, because if it is redirected the
+     last output operations might fail and it is important
+     to signal this as an error (perhaps to make). */
+  if (!stream)
+    {
+      do_ck_fclose (stdout);
+      do_ck_fclose (stderr);
+    }
+}
+
+/* Close a single file. */
+void
+do_ck_fclose(fp)
+  FILE *fp;
+{
+  int fd;
+  ck_fflush(fp);
+  clearerr(fp);
+
+  /* We want to execute both arms, so use | not ||.  */
+  if (fclose(fp) == EOF)
+    panic("couldn't close %s: %s", utils_fp_name(fp), strerror(errno));
+}
+
+
+/* Panic on failing rename */
+void
+ck_rename (from, to, unlink_if_fail)
+  const char *from, *to;
+  const char *unlink_if_fail;
+{
+  int rd = rename (from, to);
+  if (rd != -1)
+    return;
+
+  if (unlink_if_fail)
+    {
+      int save_errno = errno;
+      errno = 0;
+      unlink (unlink_if_fail);
+
+      /* Failure to remove the temporary file is more severe, so trigger it first.  */
+      if (errno != 0)
+        panic (_("cannot remove %s: %s"), unlink_if_fail, strerror (errno));
+
+      errno = save_errno;
+    }
+
+  panic (_("cannot rename %s: %s"), from, strerror (errno));
+}
+
+
+
+
+/* Panic on failing malloc */
+VOID *
+ck_malloc(size)
+  size_t size;
+{
+  VOID *ret = calloc(1, size ? size : 1);
+  if (!ret)
+    panic("couldn't allocate memory");
+  return ret;
+}
+
+/* Panic on failing malloc */
+VOID *
+xmalloc(size)
+  size_t size;
+{
+  return ck_malloc(size);
+}
+
+/* Panic on failing realloc */
+VOID *
+ck_realloc(ptr, size)
+  VOID *ptr;
+  size_t size;
+{
+  VOID *ret;
+
+  if (size == 0)
+    {
+      FREE(ptr);
+      return NULL;
+    }
+  if (!ptr)
+    return ck_malloc(size);
+  ret = realloc(ptr, size);
+  if (!ret)
+    panic("couldn't re-allocate memory");
+  return ret;
+}
+
+/* Return a malloc()'d copy of a string */
+char *
+ck_strdup(str)
+  const char *str;
+{
+  char *ret = MALLOC(strlen(str)+1, char);
+  return strcpy(ret, str);
+}
+
+/* Return a malloc()'d copy of a block of memory */
+VOID *
+ck_memdup(buf, len)
+  const VOID *buf;
+  size_t len;
+{
+  VOID *ret = ck_malloc(len);
+  return memcpy(ret, buf, len);
+}
+
+/* Release a malloc'd block of memory */
+void
+ck_free(ptr)
+  VOID *ptr;
+{
+  if (ptr)
+    free(ptr);
+}
+
+
+/* Implement a variable sized buffer of `stuff'.  We don't know what it is,
+nor do we care, as long as it doesn't mind being aligned by malloc. */
+
+struct buffer
+  {
+    size_t allocated;
+    size_t length;
+    char *b;
+  };
+
+#define MIN_ALLOCATE 50
+
+struct buffer *
+init_buffer()
+{
+  struct buffer *b = MALLOC(1, struct buffer);
+  b->b = MALLOC(MIN_ALLOCATE, char);
+  b->allocated = MIN_ALLOCATE;
+  b->length = 0;
+  return b;
+}
+
+char *
+get_buffer(b)
+  struct buffer *b;
+{
+  return b->b;
+}
+
+size_t
+size_buffer(b)
+  struct buffer *b;
+{
+  return b->length;
+}
+
+static void resize_buffer P_((struct buffer *b, size_t newlen));
+static void
+resize_buffer(b, newlen)
+  struct buffer *b;
+  size_t newlen;
+{
+  char *try = NULL;
+  size_t alen = b->allocated;
+
+  if (newlen <= alen)
+    return;
+  alen *= 2;
+  if (newlen < alen)
+    try = realloc(b->b, alen);	/* Note: *not* the REALLOC() macro! */
+  if (!try)
+    {
+      alen = newlen;
+      try = REALLOC(b->b, alen, char);
+    }
+  b->allocated = alen;
+  b->b = try;
+}
+
+char *
+add_buffer(b, p, n)
+  struct buffer *b;
+  const char *p;
+  size_t n;
+{
+  char *result;
+  if (b->allocated - b->length < n)
+    resize_buffer(b, b->length+n);
+  result = memcpy(b->b + b->length, p, n);
+  b->length += n;
+  return result;
+}
+
+char *
+add1_buffer(b, c)
+  struct buffer *b;
+  int c;
+{
+  /* This special case should be kept cheap;
+   *  don't make it just a mere convenience
+   *  wrapper for add_buffer() -- even "builtin"
+   *  versions of memcpy(a, b, 1) can become
+   *  expensive when called too often.
+   */
+  if (c != EOF)
+    {
+      char *result;
+      if (b->allocated - b->length < 1)
+	resize_buffer(b, b->length+1);
+      result = b->b + b->length++;
+      *result = c;
+      return result;
+    }
+
+  return NULL;
+}
+
+void
+free_buffer(b)
+  struct buffer *b;
+{
+  if (b)
+    FREE(b->b);
+  FREE(b);
+}
diff --git a/src/sed/lib/utils.h b/src/sed/lib/utils.h
new file mode 100644
index 0000000..ae09864
--- /dev/null
+++ b/src/sed/lib/utils.h
@@ -0,0 +1,48 @@
+/*  Functions from hack's utils library.
+    Copyright (C) 1989, 1990, 1991, 1998, 1999, 2003
+    Free Software Foundation, Inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2, or (at your option)
+    any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#include <stdio.h>
+
+#include "basicdefs.h"
+
+void panic P_((const char *str, ...));
+
+FILE *ck_fopen P_((const char *name, const char *mode, bool fail));
+void ck_fwrite P_((const VOID *ptr, size_t size, size_t nmemb, FILE *stream));
+size_t ck_fread P_((VOID *ptr, size_t size, size_t nmemb, FILE *stream));
+void ck_fflush P_((FILE *stream));
+void ck_fclose P_((FILE *stream));
+size_t ck_getline P_((char **text, size_t *buflen, FILE *stream));
+FILE * ck_mkstemp P_((char **p_filename, char *tmpdir, char *base));
+void ck_rename P_((const char *from, const char *to, const char *unlink_if_fail));
+
+VOID *ck_malloc P_((size_t size));
+VOID *xmalloc P_((size_t size));
+VOID *ck_realloc P_((VOID *ptr, size_t size));
+char *ck_strdup P_((const char *str));
+VOID *ck_memdup P_((const VOID *buf, size_t len));
+void ck_free P_((VOID *ptr));
+
+struct buffer *init_buffer P_((void));
+char *get_buffer P_((struct buffer *b));
+size_t size_buffer P_((struct buffer *b));
+char *add_buffer P_((struct buffer *b, const char *p, size_t n));
+char *add1_buffer P_((struct buffer *b, int ch));
+void free_buffer P_((struct buffer *b));
+
+extern const char *myname;
diff --git a/src/sed/po/ChangeLog b/src/sed/po/ChangeLog
new file mode 100644
index 0000000..0042d6f
--- /dev/null
+++ b/src/sed/po/ChangeLog
@@ -0,0 +1,53 @@
+2004-11-11  Paolo Bonzini  <bonzini@gnu.org>
+
+	* Makevars: New.
+
+2004-11-02  gettextize  <bug-gnu-utils@gnu.org>
+
+	* Makefile.in.in: Upgrade to gettext-0.10.40.
+
+2002-10-26  Paolo Bonzini  <bonzini@gnu.org>
+
+	* po/*.po: updated from Translation Project
+
+2001-10-19  gettextize  <bug-gnu-utils@gnu.org>
+
+	* Makefile.in.in: Upgrade to gettext-0.10.40.
+	* cat-id-tbl.c: Remove file.
+	* stamp-cat-id: Remove file.
+
+2001-03-02  Paolo Bonzini  <bonzini@gnu.org>
+
+	* po/it.po: updated
+	* po/sed.pot: likewise.
+	
+2000-12-10  Paolo Bonzini  <bonzini@gnu.org>
+
+	* po/it.po: Italian translation reviewed for new POT file.
+	* po/sed.pot: updated
+
+Mon Mar 15 16:25:53 PST 1999  Ken Pizzini <ken@gnu.org>
+
+	* po/it.po: new translation file.
+
+Sun Feb  7 21:22:17 PST 1999  Ken Pizzini <ken@gnu.org>
+
+	* po/de.po: new translation file.
+
+Sat Dec 12 11:18:55 PST 1998  Ken Pizzini <ken@gnu.org>
+
+	* po/ru.po: new translation file.
+
+Sun Dec  6 00:51:23 PST 1998  Ken Pizzini <ken@gnu.org>
+
+	* po/fr.po: new translation file.
+
+Sun Aug 16 02:59:20 PDT 1998  Ken Pizzini <ken@gnu.org>
+
+	* sed/compile.c: added N_() markers and corresponding gettext()
+	  (er, _()) calls.
+	* po/sed.pot: updated to reflect changed and newly marked text.
+
+1998-07-24  Erick Branderhorst  <Erick.Branderhorst@asml.nl>
+
+	* po/nl.po: Dutch translation.
diff --git a/src/sed/po/LINGUAS b/src/sed/po/LINGUAS
new file mode 100644
index 0000000..cb92b48
--- /dev/null
+++ b/src/sed/po/LINGUAS
@@ -0,0 +1 @@
+af ca cs da de el eo es et fi fr ga gl he hr hu id it ja ko nl pl pt_BR ro ru sk sl sr sv tr zh_CN
diff --git a/src/sed/po/Makefile.in.in b/src/sed/po/Makefile.in.in
new file mode 100644
index 0000000..e955532
--- /dev/null
+++ b/src/sed/po/Makefile.in.in
@@ -0,0 +1,300 @@
+# Makefile for PO directory in any package using GNU gettext.
+# Copyright (C) 1995-1997, 2000-2002 by Ulrich Drepper <drepper@gnu.ai.mit.edu>
+#
+# This file can be copied and used freely without restrictions.  It can
+# be used in projects which are not available under the GNU General Public
+# License but which still want to provide support for the GNU gettext
+# functionality.
+# Please note that the actual code of GNU gettext is covered by the GNU
+# General Public License and is *not* in the public domain.
+
+PACKAGE = @PACKAGE@
+VERSION = @VERSION@
+
+SHELL = /bin/sh
+@SET_MAKE@
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+datadir = @datadir@
+localedir = $(datadir)/locale
+gettextsrcdir = $(datadir)/gettext/po
+
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+MKINSTALLDIRS = @MKINSTALLDIRS@
+mkinstalldirs = $(SHELL) `case "$(MKINSTALLDIRS)" in /*) echo "$(MKINSTALLDIRS)" ;; *) echo "$(top_builddir)/$(MKINSTALLDIRS)" ;; esac`
+
+GMSGFMT = @GMSGFMT@
+MSGFMT = @MSGFMT@
+XGETTEXT = @XGETTEXT@
+MSGMERGE = msgmerge
+MSGMERGE_UPDATE = @MSGMERGE@ --update
+MSGINIT = msginit
+MSGCONV = msgconv
+MSGFILTER = msgfilter
+
+POFILES = @POFILES@
+GMOFILES = @GMOFILES@
+UPDATEPOFILES = @UPDATEPOFILES@
+DUMMYPOFILES = @DUMMYPOFILES@
+DISTFILES.common = Makefile.in.in Makevars \
+$(DISTFILES.common.extra1) $(DISTFILES.common.extra2) $(DISTFILES.common.extra3)
+DISTFILES = $(DISTFILES.common) POTFILES.in $(DOMAIN).pot \
+$(POFILES) $(GMOFILES) \
+$(DISTFILES.extra1) $(DISTFILES.extra2) $(DISTFILES.extra3)
+
+POTFILES = \
+
+CATALOGS = @CATALOGS@
+
+# Makevars gets inserted here. (Don't remove this line!)
+
+.SUFFIXES:
+.SUFFIXES: .po .gmo .mo .nop .po-update
+
+.po.mo:
+	$(MSGFMT) -c -o $@ $<
+
+.po.gmo:
+	@lang=`echo $* | sed -e 's,.*/,,'`; \
+	test "$(srcdir)" = . && cdcmd="" || cdcmd="cd $(srcdir) && "; \
+	echo "$${cdcmd}rm -f $${lang}.gmo && $(GMSGFMT) -c --statistics -o $${lang}.gmo $${lang}.po"; \
+	cd $(srcdir) && rm -f $${lang}.gmo && $(GMSGFMT) -c --statistics -o $${lang}.gmo $${lang}.po
+
+
+all: all-@USE_NLS@
+
+all-yes: $(CATALOGS)
+all-no:
+
+# Note: Target 'all' must not depend on target '$(DOMAIN).pot-update',
+# otherwise packages like GCC can not be built if only parts of the source
+# have been downloaded.
+
+$(DOMAIN).pot-update: $(POTFILES) $(srcdir)/POTFILES.in
+	$(XGETTEXT) --default-domain=$(DOMAIN) --directory=$(top_srcdir) \
+	  --add-comments=TRANSLATORS: $(XGETTEXT_OPTIONS) \
+	  --files-from=$(srcdir)/POTFILES.in \
+	  --copyright-holder='$(COPYRIGHT_HOLDER)' \
+	&& test ! -f $(DOMAIN).po \
+	   || ( rm -f $(srcdir)/$(DOMAIN).pot \
+		&& mv $(DOMAIN).po $(srcdir)/$(DOMAIN).pot )
+
+$(srcdir)/$(DOMAIN).pot:
+	$(MAKE) $(DOMAIN).pot-update
+
+$(POFILES): $(srcdir)/$(DOMAIN).pot
+	@lang=`echo $@ | sed -e 's,.*/,,' -e 's/\.po$$//'`; \
+	test "$(srcdir)" = . && cdcmd="" || cdcmd="cd $(srcdir) && "; \
+	echo "$${cdcmd}$(MSGMERGE_UPDATE) $${lang}.po $(DOMAIN).pot"; \
+	cd $(srcdir) && $(MSGMERGE_UPDATE) $${lang}.po $(DOMAIN).pot
+
+
+install: install-exec install-data
+install-exec:
+install-data: install-data-@USE_NLS@
+	if test "$(PACKAGE)" = "gettext"; then \
+	  $(mkinstalldirs) $(DESTDIR)$(gettextsrcdir); \
+	  for file in $(DISTFILES.common); do \
+	    $(INSTALL_DATA) $(srcdir)/$$file \
+			    $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	else \
+	  : ; \
+	fi
+install-data-no: all
+install-data-yes: all
+	$(mkinstalldirs) $(DESTDIR)$(datadir)
+	@catalogs='$(CATALOGS)'; \
+	for cat in $$catalogs; do \
+	  cat=`basename $$cat`; \
+	  lang=`echo $$cat | sed -e 's/\.gmo$$//'`; \
+	  dir=$(localedir)/$$lang/LC_MESSAGES; \
+	  $(mkinstalldirs) $(DESTDIR)$$dir; \
+	  if test -r $$cat; then realcat=$$cat; else realcat=$(srcdir)/$$cat; fi; \
+	  $(INSTALL_DATA) $$realcat $(DESTDIR)$$dir/$(DOMAIN).mo; \
+	  echo "installing $$realcat as $(DESTDIR)$$dir/$(DOMAIN).mo"; \
+	  for lc in '' $(EXTRA_LOCALE_CATEGORIES); do \
+	    if test -n "$$lc"; then \
+	      if (cd $(DESTDIR)$(localedir)/$$lang && LC_ALL=C ls -l -d $$lc 2>/dev/null) | grep ' -> ' >/dev/null; then \
+	        link=`cd $(DESTDIR)$(localedir)/$$lang && LC_ALL=C ls -l -d $$lc | sed -e 's/^.* -> //'`; \
+	        mv $(DESTDIR)$(localedir)/$$lang/$$lc $(DESTDIR)$(localedir)/$$lang/$$lc.old; \
+	        mkdir $(DESTDIR)$(localedir)/$$lang/$$lc; \
+	        (cd $(DESTDIR)$(localedir)/$$lang/$$lc.old && \
+	         for file in *; do \
+	           if test -f $$file; then \
+	             ln -s ../$$link/$$file $(DESTDIR)$(localedir)/$$lang/$$lc/$$file; \
+	           fi; \
+	         done); \
+	        rm -f $(DESTDIR)$(localedir)/$$lang/$$lc.old; \
+	      else \
+	        if test -d $(DESTDIR)$(localedir)/$$lang/$$lc; then \
+	          :; \
+	        else \
+	          rm -f $(DESTDIR)$(localedir)/$$lang/$$lc; \
+	          mkdir $(DESTDIR)$(localedir)/$$lang/$$lc; \
+	        fi; \
+	      fi; \
+	      rm -f $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo; \
+	      ln -s ../LC_MESSAGES/$(DOMAIN).mo $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo 2>/dev/null || \
+	      ln $(DESTDIR)$(localedir)/$$lang/LC_MESSAGES/$(DOMAIN).mo $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo 2>/dev/null || \
+	      cp -p $(DESTDIR)$(localedir)/$$lang/LC_MESSAGES/$(DOMAIN).mo $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo; \
+	      echo "installing $$realcat link as $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo"; \
+	    fi; \
+	  done; \
+	done
+
+install-strip: install
+
+installdirs: installdirs-exec installdirs-data
+installdirs-exec:
+installdirs-data: installdirs-data-@USE_NLS@
+	if test "$(PACKAGE)" = "gettext"; then \
+	  $(mkinstalldirs) $(DESTDIR)$(gettextsrcdir); \
+	else \
+	  : ; \
+	fi
+installdirs-data-no:
+installdirs-data-yes:
+	$(mkinstalldirs) $(DESTDIR)$(datadir)
+	@catalogs='$(CATALOGS)'; \
+	for cat in $$catalogs; do \
+	  cat=`basename $$cat`; \
+	  lang=`echo $$cat | sed -e 's/\.gmo$$//'`; \
+	  dir=$(localedir)/$$lang/LC_MESSAGES; \
+	  $(mkinstalldirs) $(DESTDIR)$$dir; \
+	  for lc in '' $(EXTRA_LOCALE_CATEGORIES); do \
+	    if test -n "$$lc"; then \
+	      if (cd $(DESTDIR)$(localedir)/$$lang && LC_ALL=C ls -l -d $$lc 2>/dev/null) | grep ' -> ' >/dev/null; then \
+	        link=`cd $(DESTDIR)$(localedir)/$$lang && LC_ALL=C ls -l -d $$lc | sed -e 's/^.* -> //'`; \
+	        mv $(DESTDIR)$(localedir)/$$lang/$$lc $(DESTDIR)$(localedir)/$$lang/$$lc.old; \
+	        mkdir $(DESTDIR)$(localedir)/$$lang/$$lc; \
+	        (cd $(DESTDIR)$(localedir)/$$lang/$$lc.old && \
+	         for file in *; do \
+	           if test -f $$file; then \
+	             ln -s ../$$link/$$file $(DESTDIR)$(localedir)/$$lang/$$lc/$$file; \
+	           fi; \
+	         done); \
+	        rm -f $(DESTDIR)$(localedir)/$$lang/$$lc.old; \
+	      else \
+	        if test -d $(DESTDIR)$(localedir)/$$lang/$$lc; then \
+	          :; \
+	        else \
+	          rm -f $(DESTDIR)$(localedir)/$$lang/$$lc; \
+	          mkdir $(DESTDIR)$(localedir)/$$lang/$$lc; \
+	        fi; \
+	      fi; \
+	    fi; \
+	  done; \
+	done
+
+# Define this as empty until I found a useful application.
+installcheck:
+
+uninstall: uninstall-exec uninstall-data
+uninstall-exec:
+uninstall-data: uninstall-data-@USE_NLS@
+	if test "$(PACKAGE)" = "gettext"; then \
+	  for file in $(DISTFILES.common); do \
+	    rm -f $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	else \
+	  : ; \
+	fi
+uninstall-data-no:
+uninstall-data-yes:
+	catalogs='$(CATALOGS)'; \
+	for cat in $$catalogs; do \
+	  cat=`basename $$cat`; \
+	  lang=`echo $$cat | sed -e 's/\.gmo$$//'`; \
+	  for lc in LC_MESSAGES $(EXTRA_LOCALE_CATEGORIES); do \
+	    rm -f $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo; \
+	  done; \
+	done
+
+check: all
+
+dvi info tags TAGS ID:
+
+mostlyclean:
+	rm -f core core.* $(DOMAIN).po *.new.po
+	rm -fr *.o
+
+clean: mostlyclean
+
+distclean: clean
+	rm -f Makefile Makefile.in POTFILES *.mo
+
+maintainer-clean: distclean
+	@echo "This command is intended for maintainers to use;"
+	@echo "it deletes files that may require special tools to rebuild."
+	rm -f $(GMOFILES)
+
+distdir = $(top_builddir)/$(PACKAGE)-$(VERSION)/$(subdir)
+dist distdir:
+	$(MAKE) update-po
+	@$(MAKE) dist2
+# This is a separate target because 'update-po' must be executed before.
+dist2: $(DISTFILES)
+	dists="$(DISTFILES)"; \
+	if test -f $(srcdir)/ChangeLog; then dists="$$dists ChangeLog"; fi; \
+	if test -f $(srcdir)/LINGUAS; then dists="$$dists LINGUAS"; fi; \
+	for file in $$dists; do \
+	  if test -f $$file; then \
+	    cp -p $$file $(distdir); \
+	  else \
+	    cp -p $(srcdir)/$$file $(distdir); \
+	  fi; \
+	done
+
+update-po: Makefile
+	$(MAKE) $(DOMAIN).pot-update
+	$(MAKE) $(UPDATEPOFILES)
+	$(MAKE) update-gmo
+
+# General rule for updating PO files.
+
+.nop.po-update:
+	@lang=`echo $@ | sed -e 's/\.po-update$$//'`; \
+	if test "$(PACKAGE)" = "gettext"; then PATH=`pwd`/../src:$$PATH; fi; \
+	tmpdir=`pwd`; \
+	echo "$$lang:"; \
+	test "$(srcdir)" = . && cdcmd="" || cdcmd="cd $(srcdir) && "; \
+	echo "$${cdcmd}$(MSGMERGE) $$lang.po $(DOMAIN).pot -o $$lang.new.po"; \
+	cd $(srcdir); \
+	if $(MSGMERGE) $$lang.po $(DOMAIN).pot -o $$tmpdir/$$lang.new.po; then \
+	  if cmp $$lang.po $$tmpdir/$$lang.new.po >/dev/null 2>&1; then \
+	    rm -f $$tmpdir/$$lang.new.po; \
+	  else \
+	    if mv -f $$tmpdir/$$lang.new.po $$lang.po; then \
+	      :; \
+	    else \
+	      echo "msgmerge for $$lang.po failed: cannot move $$tmpdir/$$lang.new.po to $$lang.po" 1>&2; \
+	      exit 1; \
+	    fi; \
+	  fi; \
+	else \
+	  echo "msgmerge for $$lang.po failed!" 1>&2; \
+	  rm -f $$tmpdir/$$lang.new.po; \
+	fi
+
+$(DUMMYPOFILES):
+
+update-gmo: Makefile $(GMOFILES)
+	@:
+
+Makefile: Makefile.in.in $(top_builddir)/config.status POTFILES.in
+	cd $(top_builddir) \
+	  && CONFIG_FILES=$(subdir)/$@.in CONFIG_HEADERS= \
+	       $(SHELL) ./config.status
+
+force:
+
+# Tell versions [3.59,3.63) of GNU make not to export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/sed/po/Makevars b/src/sed/po/Makevars
new file mode 100644
index 0000000..32692ab
--- /dev/null
+++ b/src/sed/po/Makevars
@@ -0,0 +1,41 @@
+# Makefile variables for PO directory in any package using GNU gettext.
+
+# Usually the message domain is the same as the package name.
+DOMAIN = $(PACKAGE)
+
+# These two variables depend on the location of this directory.
+subdir = po
+top_builddir = ..
+
+# These options get passed to xgettext.
+XGETTEXT_OPTIONS = --keyword=_ --keyword=N_
+
+# This is the copyright holder that gets inserted into the header of the
+# $(DOMAIN).pot file.  Set this to the copyright holder of the surrounding
+# package.  (Note that the msgstr strings, extracted from the package's
+# sources, belong to the copyright holder of the package.)  Translators are
+# expected to transfer the copyright for their translations to this person
+# or entity, or to disclaim their copyright.  The empty string stands for
+# the public domain; in this case the translators are expected to disclaim
+# their copyright.
+COPYRIGHT_HOLDER = Free Software Foundation, Inc.
+
+# This is the email address or URL to which the translators shall report
+# bugs in the untranslated strings:
+# - Strings which are not entire sentences, see the maintainer guidelines
+#   in the GNU gettext documentation, section 'Preparing Strings'.
+# - Strings which use unclear terms or require additional context to be
+#   understood.
+# - Strings which make invalid assumptions about notation of date, time or
+#   money.
+# - Pluralisation problems.
+# - Incorrect English spelling.
+# - Incorrect formatting.
+# It can be your email address, or a mailing list address where translators
+# can write to without being subscribed, or the URL of a web page through
+# which the translators can contact you.
+MSGID_BUGS_ADDRESS =
+
+# This is the list of locale categories, beyond LC_MESSAGES, for which the
+# message catalogs shall be used.  It is usually empty.
+EXTRA_LOCALE_CATEGORIES =
diff --git a/src/sed/po/POTFILES.in b/src/sed/po/POTFILES.in
new file mode 100644
index 0000000..3c06d1e
--- /dev/null
+++ b/src/sed/po/POTFILES.in
@@ -0,0 +1,8 @@
+sed/compile.c
+sed/execute.c
+sed/regexp.c
+sed/sed.c
+lib/utils.c
+lib/regcomp.c
+lib/regexec.c
+lib/regex_internal.c
diff --git a/src/sed/po/Rules-quot b/src/sed/po/Rules-quot
new file mode 100644
index 0000000..5f46d23
--- /dev/null
+++ b/src/sed/po/Rules-quot
@@ -0,0 +1,42 @@
+# Special Makefile rules for English message catalogs with quotation marks.
+
+DISTFILES.common.extra1 = quot.sed boldquot.sed en@quot.header en@boldquot.header insert-header.sin Rules-quot
+
+.SUFFIXES: .insert-header .po-update-en
+
+en@quot.po-update: en@quot.po-update-en
+en@boldquot.po-update: en@boldquot.po-update-en
+
+.insert-header.po-update-en:
+	@lang=`echo $@ | sed -e 's/\.po-update-en$$//'`; \
+	if test "$(PACKAGE)" = "gettext"; then PATH=`pwd`/../src:$$PATH; GETTEXTLIBDIR=`cd $(top_srcdir)/src && pwd`; export GETTEXTLIBDIR; fi; \
+	tmpdir=`pwd`; \
+	echo "$$lang:"; \
+	ll=`echo $$lang | sed -e 's/@.*//'`; \
+	LC_ALL=C; export LC_ALL; \
+	cd $(srcdir); \
+	if $(MSGINIT) -i $(DOMAIN).pot --no-translator -l $$ll -o - 2>/dev/null | sed -f $$tmpdir/$$lang.insert-header | $(MSGCONV) -t UTF-8 | $(MSGFILTER) sed -f `echo $$lang | sed -e 's/.*@//'`.sed 2>/dev/null > $$tmpdir/$$lang.new.po; then \
+	  if cmp $$lang.po $$tmpdir/$$lang.new.po >/dev/null 2>&1; then \
+	    rm -f $$tmpdir/$$lang.new.po; \
+	  else \
+	    if mv -f $$tmpdir/$$lang.new.po $$lang.po; then \
+	      :; \
+	    else \
+	      echo "creation of $$lang.po failed: cannot move $$tmpdir/$$lang.new.po to $$lang.po" 1>&2; \
+	      exit 1; \
+	    fi; \
+	  fi; \
+	else \
+	  echo "creation of $$lang.po failed!" 1>&2; \
+	  rm -f $$tmpdir/$$lang.new.po; \
+	fi
+
+en@quot.insert-header: insert-header.sin
+	sed -e '/^#/d' -e 's/HEADER/en@quot.header/g' $(srcdir)/insert-header.sin > en@quot.insert-header
+
+en@boldquot.insert-header: insert-header.sin
+	sed -e '/^#/d' -e 's/HEADER/en@boldquot.header/g' $(srcdir)/insert-header.sin > en@boldquot.insert-header
+
+mostlyclean: mostlyclean-quot
+mostlyclean-quot:
+	rm -f *.insert-header
diff --git a/src/sed/po/af.gmo b/src/sed/po/af.gmo
new file mode 100644
index 0000000..f701a18
--- /dev/null
+++ b/src/sed/po/af.gmo
diff --git a/src/sed/po/af.po b/src/sed/po/af.po
new file mode 100644
index 0000000..8e10341
--- /dev/null
+++ b/src/sed/po/af.po
@@ -0,0 +1,448 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) 2004 Free Software Foundation, Inc.
+# This file is distributed under the same license as the sed package.
+# Ysbeer <ysbeer@af.org.za>, 2004
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0.9\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2004-01-11 21:06+0000\n"
+"Last-Translator: Ysbeer <ysbeer@af.org.za>\n"
+"Language-Team: Afrikaans <i18n@af.org.za>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=n!=1;\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Meervoudige `!'s"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "Onverwagte `,'"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "Kan nie +N or ~N as die eerste adres gebruik nie"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "Ongepaarde `{'"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "Onverwagte `}'"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Ekstra karakters na instruksie"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "Het \\ na `a', `c' or `i' verwag"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' soek nie 'n adres nie"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": soek nie 'n adres nie"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Kommentare aanvaar nie adresse nie"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Vermiste instruksie"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Instruksie gebruik slegs een adres"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Ongetermineerde adresregex"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Ongetermineerde `s' instruksie"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Ongetermineerde `y' instruksie"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Onbekende opsie vir `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "meervoudige `p' opsies vir `s' instruksie"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "meervoudige `g' opsies vir `s' instruksie"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "meervoudige nommeropsies vir `s' instruksie"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "nommeropsie vir `s' instruksie mag nie nul wees nie"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "stringe vir y-instruksie het verskillende lengtes"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "het nuwer sed-weergawe verwag"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Instruksie gebruik slegs een adres"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Onbekende instruksie:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: lêer %s lyn %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e uitdrukking #%lu, karakter %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Kan nie etiket vir sprong na `%s' kry nie"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: Kan nie %s lees nie: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Kon nie die lêer %s oopmaak nie: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Kon nie die lêer %s oopmaak nie: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Kon nie tydelike lêer %s oopmaak nie: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "fout in subproses"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "opsie `e' word nie ondersteun nie"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "`e' instruksie word nie ondersteun nie"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Geen vorige regex nie"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Kan nie veranderaars vir leë regex spesifiseer nie"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Ongeldige regterhandsverwysing \\%d vir `s' instruksie"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 gebruik Perl 5 se regexsintaks in die skrip.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 gebruik Perl 5 se regexsintaks in die skrip.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Rapporteer foute per e-pos aan: %s .\n"
+"Sluit asb. die woord ``%s'' êrens in die onderwerplyn in.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed weergawe %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"gebaseer op GNU sed weergawe 3.02.80\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed weergawe %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Hierdie is vrye sagteware; raadpleeg die bronkode vir kopiëringsinligting. "
+"Daar is GEEN\n"
+"waarborg nie; nie eens vir BRUIKBAARHEID of GESKIKHEID VIR 'n SPESIFIEK "
+"DOEL,\n"
+"binne regsperke nie.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: Kan nie %s lees nie: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Kon nie die lêer %s oopmaak nie: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "kon nie %d item na %s skryf nie: %s"
+msgstr[1] "kon nie %d items na %s skryf nie: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "leesfout op %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: Kan nie %s lees nie: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Sukses"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Geen paring"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Ongeldige regex"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Ongeldige kollasiekarakter"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Ongeldige karakterklasnaam"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Sleep terugstreep"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Ongeldige terugverwysing"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "Ongepaarde [ of [^"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "Ongepaarde ( or \\("
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "Ongepaarde \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Ongeldige inhoud binne \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Ongeldige bereikseinde"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Geheue uitgeput"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Ongeldige vorige regex"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Premature einde vir regex"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Regex te groot"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Ongepaarde ) of \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Geen vorige regex nie"
diff --git a/src/sed/po/boldquot.sed b/src/sed/po/boldquot.sed
new file mode 100644
index 0000000..4b937aa
--- /dev/null
+++ b/src/sed/po/boldquot.sed
@@ -0,0 +1,10 @@
+s/"\([^"]*\)"/“\1�/g
+s/`\([^`']*\)'/‘\1’/g
+s/ '\([^`']*\)' / ‘\1’ /g
+s/ '\([^`']*\)'$/ ‘\1’/g
+s/^'\([^`']*\)' /‘\1’ /g
+s/“�/""/g
+s/“/“/g
+s/�/�/g
+s/‘/‘/g
+s/’/’/g
diff --git a/src/sed/po/ca.gmo b/src/sed/po/ca.gmo
new file mode 100644
index 0000000..5994827
--- /dev/null
+++ b/src/sed/po/ca.gmo
diff --git a/src/sed/po/ca.po b/src/sed/po/ca.po
new file mode 100644
index 0000000..a99b5a6
--- /dev/null
+++ b/src/sed/po/ca.po
@@ -0,0 +1,463 @@
+# Catalan translation of sed.
+# Copyright © 2002, 2003, 2004 Free Software Foundation, Inc.
+# This file is distributed under the same license as the sed package.
+# Jordi Mallach <jordi@gnu.org>, 2002, 2003, 2004.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.1.1\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2004-07-10 05:51+0200\n"
+"Last-Translator: Jordi Mallach <jordi@gnu.org>\n"
+"Language-Team: Catalan <ca@dodds.net>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-1\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=n!=1;\n"
+
+#: sed/compile.c:162
+msgid "multiple `!'s"
+msgstr "múltiples «!»"
+
+#: sed/compile.c:163
+msgid "unexpected `,'"
+msgstr "«,» inesperada"
+
+#: sed/compile.c:164
+msgid "invalid usage of +N or ~N as first address"
+msgstr "no es pot utilitzar +N o ~N com a primera adreça"
+
+#: sed/compile.c:165
+msgid "unmatched `{'"
+msgstr "«{» no emparellat"
+
+#: sed/compile.c:166
+msgid "unexpected `}'"
+msgstr "«}» inesperat"
+
+#: sed/compile.c:167
+msgid "extra characters after command"
+msgstr "hi ha caràcters extra després de l'ordre"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "s'espera \\ després de «a», «c» i «i»"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "«}» no accepta cap adreça"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": no accepta cap adreça"
+
+#: sed/compile.c:171
+msgid "comments don't accept any addresses"
+msgstr "els comentaris no accepten cap adreça"
+
+#: sed/compile.c:172
+msgid "missing command"
+msgstr "cal una ordre"
+
+#: sed/compile.c:173
+msgid "command only uses one address"
+msgstr "l'ordre utilitza només una adreça"
+
+#: sed/compile.c:174
+msgid "unterminated address regex"
+msgstr "l'expressió regular d'adreça no està terminada"
+
+#: sed/compile.c:175
+msgid "unterminated `s' command"
+msgstr "ordre «s» no terminada"
+
+#: sed/compile.c:176
+msgid "unterminated `y' command"
+msgstr "ordre «y» no terminada"
+
+#: sed/compile.c:177
+msgid "unknown option to `s'"
+msgstr "opció desconeguda per a «s»"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "múltiples opcions «p» per a l'ordre «s»"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "múltiples opcions «g» per a l'ordre «s»"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "múltiples opcions numèriques per a l'ordre «s»"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "l'opció numèrica per a l'ordre «s» no pot ser zero"
+
+#: sed/compile.c:182
+msgid "strings for `y' command are different lengths"
+msgstr "les cadenes per a l'ordre «y» són de longituds diferents"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr "el caràcter delimitador no és un caràcter d'un byte"
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "s'esperava una versió més nova de sed"
+
+#: sed/compile.c:185
+msgid "invalid usage of line address 0"
+msgstr "ús de l'adreça de línia 0 invàlid"
+
+#: sed/compile.c:186
+#, c-format
+msgid "unknown command: `%c'"
+msgstr "ordre desconeguda: «%c»"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: fitxer %s línia %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e expressió #%lu, caràcter %lu: %s\n"
+
+#: sed/compile.c:1644
+#, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "no es troba l'etiqueta per al salt a «%s»"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: no es pot llegir %s: %s\n"
+
+#: sed/execute.c:673
+#, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "no s'ha pogut editar %s: és un terminal"
+
+#: sed/execute.c:677
+#, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "no s'ha pogut editar %s: no és un fitxer regular"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "no s'ha pogut obrir el fitxer temporal %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "s'ha produït un error en el subprocés"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "l'opció «e» no està suportada"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "l'ordre «e» no està suportada"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr "no hi ha una expressió regular prèvia"
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr "no es poden especificar modificadors en expregs buides"
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "referència \\%d no vàlida en el costat dret de l'ordre «s»"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 usa la sintaxi d'expressions regulars de Perl 5 en aquesta\n"
+"                 sequència.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+"Forma d'ús: %s [OPCIÓ]... {script-només-si-no-hi-ha-altres-scripts}\n"
+"               [fitxer-entrada]...\n"
+"\n"
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+"  -n, --quiet, --silent\n"
+"                 suprimeix la impressió automàtica de l'espai de patrons\n"
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+"  -e script, --expression=script\n"
+"                 afegeix el script a les ordres a executar\n"
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+"  -f fitxer-script, --file=fitxer-script\n"
+"                 afegeix els continguts de fitxer-script a les ordres a "
+"executar\n"
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+"  -i[SUFIX], --in-place[=SUFIX]\n"
+"                 edita els mateixos fitxers (fa còpia de seguretat si es\n"
+"                 proveeix una extensió)\n"
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+"  -l N, --line-length=N\n"
+"                 especifica la longitud desitjada per a l'ajust de final de\n"
+"                 línia per a l'ordre «l»\n"
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+"  --posix\n"
+"                 inhabilita totes les extensions GNU.\n"
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -r, --regexp-extended\n"
+"                 usa expressions regulars exteses en el script.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+"  -s, --separate\n"
+"                 considera els fitxers com independents, en compte d'un\n"
+"                 llarg flux continu.\n"
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+"  -u, --unbuffered\n"
+"                 carrega una quantitat mínima de dades dels fitxers "
+"d'entrada\n"
+"                 i buida els búfers d'eixida més sovint\n"
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr "      --help     mostra aquest missatge d'ajuda i surt\n"
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr "      --version  mostra la informació de la versió i surt\n"
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+"\n"
+"Si no es donen cap de les opcions -e, --expression, -f o --file, el primer\n"
+"argument no-opció es pren com el script sed a interpretar. Tots els "
+"arguments\n"
+"restants són noms de fitxers d'entrada; si no s'especifiquen fitxers "
+"d'entrada,\n"
+"es llegeix l'entrada estàndard.\n"
+"\n"
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Envieu informes d'error a: %s.\n"
+"Assegureu-vos d'incloure la paraula «%s» en alguna part del camp "
+"«Assumpte:».\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed versió %s\n"
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"basat en GNU sed versió %s\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed versió %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Aquest és programari lliure; vegeu el codi font per les condicions\n"
+"de còpia.  No hi ha CAP garantia; ni tan sols de COMERCIABILITAT o\n"
+"ADEQUACIÓ A UN PROPÒSIT PARTICULAR, fins on ho permeta la llei.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, c-format
+msgid "cannot remove %s: %s"
+msgstr "no es pot eliminar %s: %s"
+
+#: lib/utils.c:143
+#, c-format
+msgid "couldn't open file %s: %s"
+msgstr "no s'ha pogut obrir el fitxer %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "no s'ha pogut escriure %d element a %s: %s"
+msgstr[1] "no s'han pogut escriure %d elements a %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "error de lectura en %s: %s"
+
+#: lib/utils.c:341
+#, c-format
+msgid "cannot rename %s: %s"
+msgstr "no es pot reanomenar %s: %s"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Èxit"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Sense parella"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Expressió regular no vàlida"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "El caràcter de comparació no és vàlid"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Nom de classe de caràcter no vàlid"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Barra invertida al final"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "La referència cap enrere no és vàlida"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "[ o [^ no emparellat"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "«(» o \\( no emparellat"
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "\\{ no emparellat"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "El contingut de \\{\\} no és vàlid"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "El rang final no és vàlid"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Memòria exhaurida"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "L'expressió regular precedent no vàlida"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Fi prematur de l'expressió regular"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "L'expressió regular és massa gran"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr ") o \\) no emparellat"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "No hi ha una expressió regular prèvia"
diff --git a/src/sed/po/cs.gmo b/src/sed/po/cs.gmo
new file mode 100644
index 0000000..152be0c
--- /dev/null
+++ b/src/sed/po/cs.gmo
diff --git a/src/sed/po/cs.po b/src/sed/po/cs.po
new file mode 100644
index 0000000..caf786a
--- /dev/null
+++ b/src/sed/po/cs.po
@@ -0,0 +1,441 @@
+# Czech translations for GNU sed package.
+# Copyright (C) 1998 Free Software Foundation, Inc.
+# Jaroslav Fojtik <fojtik@cmp.felk.cvut.cz>, 1998.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 3.02.80\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2001-08-05 19:52+02:00\n"
+"Last-Translator: Vladimir Michl <Vladimir.Michl@seznam.cz>\n"
+"Language-Team: Czech <cs@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-2\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Vícenásobný `!'"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "Neoèekáváná `,'"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "+N nebo ~N nelze pou¾ít jako první adresu"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "Neodpovídající `{'"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "Neoèekávaná `}'"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Nadbyteèné znaky po pøíkazu"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr ""
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' nevy¾aduje jakoukoliv adresu"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": nechce jakoukoliv adresu"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "V komentáøi není pøípustná jakákoliv adresa"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Chybìjící pøíkaz"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Pøíkaz pou¾ívá pouze jedinou adresu"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Neukonèená adresa regulárního výrazu"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Neukonèený pøíkaz `s'"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Neukonèený pøíkaz `y'"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Neznámý pøepínaè pro `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "vícenásobné pou¾ití pøepínaèe `p' s pøíkazem `s'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "vícenásobné pou¾ití pøepínaèe `g' s pøíkazem `s'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "pøíkaz `s' mù¾e mít maximálnì jednu èíselnou volbu"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "èíselná volba pøíkazu `s' nemù¾e být nula"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "øetìzce pro pøíkaz `y' musí být stejnì dlouhé"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr ""
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Chybné pou¾ití adresy modifikátoru"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Neznámý pøíkaz:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: soubor %s, øádek %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e výraz #%lu, znak %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Návì¹tí pro skok na `%s' nelze najít"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: %s nelze èíst: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Soubor %s nelze otevøít"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Soubor %s nelze otevøít"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Soubor %s nelze otevøít"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr ""
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr ""
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr ""
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr ""
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr ""
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr ""
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Chyby v programu oznamujte na adrese: %s (anglicky).\n"
+"Kamkoliv do polo¾ky ``Subject:'' vlo¾te ``%s''.\n"
+"Pøipomínky k pøekladu zasílejte na adresu <cs@li.org> (èesky).\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"  %s\n"
+"  Toto je volné programové vybavení; podmínky pro kopírování a roz¹iøování\n"
+"naleznete ve zdrojových textech. Toto programové vybavení je zcela BEZ "
+"ZÁRUKY,\n"
+"a to i bez záruky PRODEJNOSTI nebo VHODNOSTI PRO NÌJAKÝ KONKRÉTNÍ ÚÈEL.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: %s nelze èíst: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Soubor %s nelze otevøít"
+
+#: lib/utils.c:220
+#, fuzzy, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "%d polo¾ek nelze do %s zapsat: %s"
+msgstr[1] "%d polo¾ek nelze do %s zapsat: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "chyba pøi ètení z %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: %s nelze èíst: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:153
+#, fuzzy
+msgid "Unmatched [ or [^"
+msgstr "Neodpovídající `{'"
+
+#: lib/regcomp.c:156
+#, fuzzy
+msgid "Unmatched ( or \\("
+msgstr "Neodpovídající `{'"
+
+#: lib/regcomp.c:159
+#, fuzzy
+msgid "Unmatched \\{"
+msgstr "Neodpovídající `{'"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr ""
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:180
+#, fuzzy
+msgid "Unmatched ) or \\)"
+msgstr "Neodpovídající `{'"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr ""
diff --git a/src/sed/po/da.gmo b/src/sed/po/da.gmo
new file mode 100644
index 0000000..a8bda80
--- /dev/null
+++ b/src/sed/po/da.gmo
diff --git a/src/sed/po/da.po b/src/sed/po/da.po
new file mode 100644
index 0000000..e96878f
--- /dev/null
+++ b/src/sed/po/da.po
@@ -0,0 +1,445 @@
+# Danish messages for sed
+# Copyright (C) 2001 Free Software Foundation, Inc.
+# Byrial Ole Jensen <byrial@image.dk>, 2001-2003.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0.8\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2003-10-25 08:00+0200\n"
+"Last-Translator: Byrial Ole Jensen <byrial@image.dk>\n"
+"Language-Team: Danish <dansk@klid.dk>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=iso-8859-1\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=n != 1;\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Flere '!'"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "Uventet ','"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "Kan ikke bruge +N eller ~N som første adresse"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "Uparret '{'"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "Uventet '}'"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Ekstra tegn efter kommando"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "Forventede \\ efter 'a', 'c' eller 'i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "'}' vil ikke have adresser"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": vil ikke have adresser"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Kommentarer vil ikke have adresser"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Der mangler en kommando"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Kommandoen bruger kun én adresse"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Uafsluttet regulært udtryk for adresse"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Uafsluttet 's'-kommando"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Uafsluttet 'y'-kommando"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Ukendt tilvalg til 's'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "Flere 'p'-flag til 's'-kommando"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "Flere 'g'-flag til 's'-kommando"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "Flere tal-flag til 's'-kommando"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "s-kommandoens tal-flag må ikke være nul"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "y-kommandoens strenge har forskellige længder"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "forventede en nyere version af sed"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Forkert brug af adresse-ændrer"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Ukendt kommando:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: fil %s, linje %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e udtryk nr. %lu, tegn %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Kan ikke finde etiket for hop til '%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: kan ikke læse %s: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "kunne ikke åbne filen %s: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "kunne ikke åbne filen %s: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "kunne ikke åbne midlertidig fil %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "fejl i underproces"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "tilvalg 'e' er ikke understøttet"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "'e'-kommando er ikke understøttet"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Intet forudgående regulært udtryk"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Der kan ikke angives ændrere til tomt regulært udtryk"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Ugyldig reference \\%d på 's'-kommandos højreside"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 brug Perl 5's syntaks for regulære udtryk i skriptet\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 brug Perl 5's syntaks for regulære udtryk i skriptet\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Send fejlrapporter på engelsk pr. e-post til %s.\n"
+"Sørg venligst for at skrive ordet \"%s\" et sted i \"Subject:\"-feltet.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed version %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"baseret på GNU sed version 3.02.80\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed version %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Dette er frit programmel; se kildeteksten for kopieringsbetingelser.\n"
+"Der er INGEN garanti; end ikke for SALGBARHED eller EGNETHED TIL NOGET\n"
+"BESTEMT FORMÅL, i det omfang som loven tillader.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: kan ikke læse %s: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "kunne ikke åbne filen %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "kunne ikke skrive %d element til %s: %s"
+msgstr[1] "kunne ikke skrive %d elementer til %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "læsefejl på %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: kan ikke læse %s: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Godt resultat"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Intet resultat"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Ugyldigt regulært udtryk"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Ugyldigt sorteringstegn"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Ugyldigt navn på tegnklasse"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Afsluttende omvendt skråstreg"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Ugyldig reference bagud"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "Uparret [ eller [^"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "Uparret ( eller \\("
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "Uparret \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Ugyldigt indhold af \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Ugyldig slutning på område"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Hukommelsen opbrugt"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Ugyldigt forudgående regulært udtryk"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Ufuldstændigt regulært udtryk"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Regulært udtryk for stort"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Uparret ) eller \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Intet forudgående regulært udtryk"
diff --git a/src/sed/po/de.gmo b/src/sed/po/de.gmo
new file mode 100644
index 0000000..019a500
--- /dev/null
+++ b/src/sed/po/de.gmo
diff --git a/src/sed/po/de.po b/src/sed/po/de.po
new file mode 100644
index 0000000..0b0eae3
--- /dev/null
+++ b/src/sed/po/de.po
@@ -0,0 +1,450 @@
+# sed german translation
+# Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
+# Walter Koch <koch@u32.de>, 2001, 2002, 2003
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0.6\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2003-03-21 22:03:41+0100\n"
+"Last-Translator: Walter Koch <koch@u32.de>\n"
+"Language-Team: German <de@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=iso-8859-1\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Mehrfache `!'"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "Unerwartetes `,'"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "+N oder ~N können nicht als erste Adresse benutzt werden"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "Nicht paarweises `{'"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "Unerwartetes `}'"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Zusätzliche Zeichen nach dem Befehl"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "Nach `a', `c' oder `i' wird \\ erwartet"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' erwartet keine Adressen"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr "`:' erwartet keine Adressen"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Kommentare erlauben keine Adressen"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Fehlender Befehl"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Befehl verwendet nur eine Adresse"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Nicht beendeter regulärer Adressausdruck"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Nicht beendeter `s'-Befehl"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Nicht beendeter `y'-Befehl"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Unbekannte Option betreffs `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "Mehrere 'p'-Optionen am `s'-Befehl"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "Mehrere 'g'-Optionen am `s'-Befehl"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "Mehrere numerische Optionen am `s'-Befehl"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "Numerisch Option am `s'-Befehl darf nicht Null sein"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "Unterschiedliche Länge der Zeichenketten am `y'-Befehl"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "Neuere Version von sed erwartet"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Befehl verwendet nur eine Adresse"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Unbekannter Befehl:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: Datei %s Zeile %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e Ausdruck #%lu, Zeichen %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Kann das Ziel für den Sprung nach `%s' nicht finden"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: kann %s nicht lesen: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Datei %s kann nicht geöffnet werden: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Datei %s kann nicht geöffnet werden: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Datei %s kann nicht geöffnet werden: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "Fehler im Subprozess"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "Option `e' wird nicht unterstützt"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "`e'-Kommando wird nicht unterstützt"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Kein vorheriger regulärer Ausdruck"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Auf leere reguläre Ausdrücke können keine `modifier' angewandt werden"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Ungültiger Verweis \\%d in den Haltepuffer des `s'-Befehls"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 Verwende die Perl 5 - Syntax für reg.Ausdrücke im Script.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 Verwende die Perl 5 - Syntax für reg.Ausdrücke im Script.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Fehlerberichte (in Englisch!) per E-Mail an: %s .\n"
+"Verwenden Sie dabei den Begriff ``%s'' irgendwo in der ``Betreff:''-Zeile.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "Super-sed version %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"basiert auf GNU sed Version 3.02.80\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed Version %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"(Der folgende Text ist eine nicht überprüfte Übersetzung, die zur\n"
+" Information dient;  in rechtlichen Fragen ist immer das englische\n"
+" Original ausschlaggebend)\n"
+"\n"
+"Dieses Program ist freie Software; In den Quelldateien können Sie die\n"
+"Bedingungen für die Weitergabe nachlesen.\n"
+"Es gibt KEINE GARANTIE; nicht einmal die implizite Garantie der\n"
+"MARKTFÄHIGKEIT oder der ERFÜLLUNG EINES BESTIMMTEN ZWECKES.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: kann %s nicht lesen: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Datei %s kann nicht geöffnet werden: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "Kann %d Feld nicht auf %s schreiben: %s"
+msgstr[1] "Kann %d Felder nicht auf %s schreiben: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "Lesefehler in %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: kann %s nicht lesen: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Erfolgreich"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Keine Übereinstimmung"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Ungültiger regulärer Ausdruck"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Ungültiger Vergleichszeichen"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Ungültige Zeichenklassenname"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Abschliessender Backslash"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Ungültiger Rückwärtsverweis"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "Nicht paarweises [ bzw. [^"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "Nicht paarweises ( bzw. \\("
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "Nicht paarweises \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Ungültiger Inhalt in \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Ungültiges Bereichende"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Speicher erschöpft"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Vorheriger regulärer Ausdruck ist ungültig"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Regulärer Ausdruck endet zu früh"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Regulärer Ausdruck ist zu groß"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Nicht paarweises ) bzw. \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Kein vorheriger regulärer Ausdruck"
diff --git a/src/sed/po/el.gmo b/src/sed/po/el.gmo
new file mode 100644
index 0000000..06f6396
--- /dev/null
+++ b/src/sed/po/el.gmo
diff --git a/src/sed/po/el.po b/src/sed/po/el.po
new file mode 100644
index 0000000..99bbc99
--- /dev/null
+++ b/src/sed/po/el.po
@@ -0,0 +1,451 @@
+# Greek messages for GNU sed.
+# Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+# Simos Xenitellis <simos@hellug.gr>, 1998, 1999, 2000, 2001, 2002.
+# 
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU sed 3.02.80\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2002-03-08 12:57+0000\n"
+"Last-Translator: Simos Xenitellis <simos@hellug.gr>\n"
+"Language-Team: Greek <nls@tux.hellug.gr>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=iso-8859-7\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "ÐïëëáðëÜ `!'s"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "ÁíáðÜíôå÷ï `,'"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "Äåí åßíáé äõíáôÞ ç ÷ñÞóç ôùí +N Þ ~N ãéá ðñþôç äéåýèõíóç"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "Áôáßñéáóôï `{'"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "Áôáßñéáóôï `}'"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "ÅðéðëÝïí ÷áñáêôÞñåò ìåôÜ ôçí åíôïëÞ"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "Áðáéôåßôáé \\ ìåôÜ ôéò åíôïëÝò `a', `c' Þ `i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "ôï `}' äåí ÷ñåéÜæåôáé äéåõèýíóåéò"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": äåí ÷ñåéÜæåôáé äéåõèýíóåéò"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Ôá ó÷üëéá äåí äÝ÷ïíôáé äéåõèýíóåéò"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Ëåßðåé ç åíôïëÞ"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Ç åíôïëÞ ÷ñçóéìïðïéåß ìüíï ìéá äéåýèõíóç"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Ìç ôåñìáôéóìÝíç äéåýèõíóç êáíïíéêÞò Ýêöñáóçò"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Ìç ôåñìáôéóìÝíç åíôïëÞ `s'"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Ìç ôåñìáôéóìÝíç åíôïëÞ `y'"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "¶ãíùóôç åðéëïãÞ ãéá ôï `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "ðïëëáðëÝò åðéëïãÝò `p' óôçí åíôïëÞ `s'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "ðïëëáðëÝò åðéëïãÝò `g' óôçí åíôïëÞ `s'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "ðïëëáðëüò åðéëïãÝò áñéèìïý óôçí åíôïëÞ `s'"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "ç åðéëïãÞ áñéèìïý óôçí åíôïëÞ `s' äåí ìðïñåß íá åßíáé ìçäÝí"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "ôá áëöáñéèìçôéêÜ ãéá ôçí åíôïëÞ `y' åßíáé äéáöïñåôéêïý ìåãÝèïõò"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr ""
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "ÁêáôÜëëçëç ÷ñÞóç ôïõ äéáìïñöùôÞ äéåýèõíóçò"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "¶ãíùóôç åíôïëÞ:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: áñ÷åßï %s ãñáììÞ %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e Ýêöñáóç #%lu, ÷áñáêôÞñáò %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Äåí Þôáí äõíáôÞ ç åýñåóç åôéêÝôôáò ãéá ìåôÜâáóç óôï `%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: áäõíáìßá óôçí áíÜãíùóç %s: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Äåí ìðüñåóá íá áíïßîù ôï áñ÷åßï %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Äåí ìðüñåóá íá áíïßîù ôï áñ÷åßï %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Äåí ìðüñåóá íá áíïßîù ôï áñ÷åßï %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "óöÜëìá óôç õðïäéáäéêáóßá"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "äåí õðïóôçñßæåôáé ç åðéëïãÞ `e'"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "äåí õðïóôçñßæåôáé ç åíôïëÞ `e'"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Äåí âñÝèçêå ðñïçãïýìåíç êáíïíéêÞ Ýêöñáóç"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "äåí åðéôñÝðåôáé ï ïñéóìüò äéáìïñöùôþí óå êåíÞ êáíïíéêÞ Ýêöñáóç"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Ìç Ýãêõñç áíáöïñÜ \\%d óôï äåîß ôìÞìá ôçò åíôïëÞò `s'"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"ÁíáöïñÝò óöáëìÜôùí ìÝóù çëåêôñïíéêïý ôá÷õäñïìåßïõ óôï: %s .\n"
+"ÐñïóÝîôå íá óõìðåñéëÜâåôå ôç ëÝîç ``%s'' êÜðïõ óôï ðåäßï ``Subject:''.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Áõôü ôï ðñüãñáììá åßíáé åëåýèåñï ëïãéóìéêü· äåßôå ôïí ðçãáßï êþäéêá ãéá "
+"ôïõò\n"
+"êáíïíéóìïýò áíôéãñáöÞò. Äåí õðÜñ÷åé ÊÁÌÉÁ ÅÃÃÕÇÓÇ· ïýôå áêüìá ãéá\n"
+"ËÅÉÔÏÕÑÃÉÊÏÔÇÔÁ Þ ÊÁÔÁËËÇËÏÔÇÔÁ ÃÉÁ ÅÍÁ ÓÕÃÊÅÊÑÉÌÅÍÏ ÓÊÏÐÏ, ìÝ÷ñé ôï óçìåßï\n"
+"ðïõ åðéôñÝðåé ï íüìïò.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: áäõíáìßá óôçí áíÜãíùóç %s: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Äåí ìðüñåóá íá áíïßîù ôï áñ÷åßï %s"
+
+#: lib/utils.c:220
+#, fuzzy, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "áäýíáôç ç åããñáöÞ %d óôïé÷åßùí óôï %s: %s"
+msgstr[1] "áäýíáôç ç åããñáöÞ %d óôïé÷åßùí óôï %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "óöÜëìá áíÜãíùóçò óôï %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: áäõíáìßá óôçí áíÜãíùóç %s: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:138
+#, fuzzy
+msgid "Invalid regular expression"
+msgstr "Äåí âñÝèçêå ðñïçãïýìåíç êáíïíéêÞ Ýêöñáóç"
+
+#: lib/regcomp.c:141
+#, fuzzy
+msgid "Invalid collation character"
+msgstr "ìç Ýãêõñï áêïëïõèßá äéáöõãÞò óå êëÜóç ÷áñáêôÞñùí"
+
+#: lib/regcomp.c:144
+#, fuzzy
+msgid "Invalid character class name"
+msgstr "ìç Ýãêõñï áêïëïõèßá äéáöõãÞò óå êëÜóç ÷áñáêôÞñùí"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:153
+#, fuzzy
+msgid "Unmatched [ or [^"
+msgstr "Áôáßñéáóôï `{'"
+
+#: lib/regcomp.c:156
+#, fuzzy
+msgid "Unmatched ( or \\("
+msgstr "Áôáßñéáóôï `{'"
+
+#: lib/regcomp.c:159
+#, fuzzy
+msgid "Unmatched \\{"
+msgstr "Áôáßñéáóôï `{'"
+
+#: lib/regcomp.c:162
+#, fuzzy
+msgid "Invalid content of \\{\\}"
+msgstr "ìç Ýãêõñï ðåñéå÷üìåíï äåéêôþí åðáíÜëçøçò {}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr ""
+
+#: lib/regcomp.c:171
+#, fuzzy
+msgid "Invalid preceding regular expression"
+msgstr "Äåí âñÝèçêå ðñïçãïýìåíç êáíïíéêÞ Ýêöñáóç"
+
+#: lib/regcomp.c:174
+#, fuzzy
+msgid "Premature end of regular expression"
+msgstr "Äåí âñÝèçêå ðñïçãïýìåíç êáíïíéêÞ Ýêöñáóç"
+
+#: lib/regcomp.c:177
+#, fuzzy
+msgid "Regular expression too big"
+msgstr "ðïëý ìåãÜëç êáíïíéêÞ Ýêöñáóç"
+
+#: lib/regcomp.c:180
+#, fuzzy
+msgid "Unmatched ) or \\)"
+msgstr "Áôáßñéáóôï `{'"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Äåí âñÝèçêå ðñïçãïýìåíç êáíïíéêÞ Ýêöñáóç"
diff --git a/src/sed/po/en@boldquot.header b/src/sed/po/en@boldquot.header
new file mode 100644
index 0000000..fedb6a0
--- /dev/null
+++ b/src/sed/po/en@boldquot.header
@@ -0,0 +1,25 @@
+# All this catalog "translates" are quotation characters.
+# The msgids must be ASCII and therefore cannot contain real quotation
+# characters, only substitutes like grave accent (0x60), apostrophe (0x27)
+# and double quote (0x22). These substitutes look strange; see
+# http://www.cl.cam.ac.uk/~mgk25/ucs/quotes.html
+#
+# This catalog translates grave accent (0x60) and apostrophe (0x27) to
+# left single quotation mark (U+2018) and right single quotation mark (U+2019).
+# It also translates pairs of apostrophe (0x27) to
+# left single quotation mark (U+2018) and right single quotation mark (U+2019)
+# and pairs of quotation mark (0x22) to
+# left double quotation mark (U+201C) and right double quotation mark (U+201D).
+#
+# When output to an UTF-8 terminal, the quotation characters appear perfectly.
+# When output to an ISO-8859-1 terminal, the single quotation marks are
+# transliterated to apostrophes (by iconv in glibc 2.2 or newer) or to
+# grave/acute accent (by libiconv), and the double quotation marks are
+# transliterated to 0x22.
+# When output to an ASCII terminal, the single quotation marks are
+# transliterated to apostrophes, and the double quotation marks are
+# transliterated to 0x22.
+#
+# This catalog furthermore displays the text between the quotation marks in
+# bold face, assuming the VT100/XTerm escape sequences.
+#
diff --git a/src/sed/po/en@quot.header b/src/sed/po/en@quot.header
new file mode 100644
index 0000000..a9647fc
--- /dev/null
+++ b/src/sed/po/en@quot.header
@@ -0,0 +1,22 @@
+# All this catalog "translates" are quotation characters.
+# The msgids must be ASCII and therefore cannot contain real quotation
+# characters, only substitutes like grave accent (0x60), apostrophe (0x27)
+# and double quote (0x22). These substitutes look strange; see
+# http://www.cl.cam.ac.uk/~mgk25/ucs/quotes.html
+#
+# This catalog translates grave accent (0x60) and apostrophe (0x27) to
+# left single quotation mark (U+2018) and right single quotation mark (U+2019).
+# It also translates pairs of apostrophe (0x27) to
+# left single quotation mark (U+2018) and right single quotation mark (U+2019)
+# and pairs of quotation mark (0x22) to
+# left double quotation mark (U+201C) and right double quotation mark (U+201D).
+#
+# When output to an UTF-8 terminal, the quotation characters appear perfectly.
+# When output to an ISO-8859-1 terminal, the single quotation marks are
+# transliterated to apostrophes (by iconv in glibc 2.2 or newer) or to
+# grave/acute accent (by libiconv), and the double quotation marks are
+# transliterated to 0x22.
+# When output to an ASCII terminal, the single quotation marks are
+# transliterated to apostrophes, and the double quotation marks are
+# transliterated to 0x22.
+#
diff --git a/src/sed/po/eo.gmo b/src/sed/po/eo.gmo
new file mode 100644
index 0000000..d2ee00a
--- /dev/null
+++ b/src/sed/po/eo.gmo
diff --git a/src/sed/po/eo.po b/src/sed/po/eo.po
new file mode 100644
index 0000000..50a0e76
--- /dev/null
+++ b/src/sed/po/eo.po
@@ -0,0 +1,445 @@
+# Esperantaj mesa�oj por GNU sed.
+# Copyright (C) 2002 Free Software Foundation, Inc.
+# Edmund GRIMLEY EVANS <edmundo@rano.org>, 2001-2003.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU sed 4.0.8\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2003-10-26 20:57+0000\n"
+"Last-Translator: Edmund GRIMLEY EVANS <edmundo@rano.org>\n"
+"Language-Team: Esperanto <translation-team-eo@lists.sourceforge.net>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8-bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Pluraj '!'oj"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "Neatendita ','"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "Ne eblas uzi +N aÅ­ ~N kiel unuan adreson"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "Neparigita '{'"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "Neatendita '}'"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Kromaj signoj post komando"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "Atendita \\ post 'a', 'c' aÅ­ 'i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "'}' ne deziras adresojn"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": ne deziras adresojn"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Komentoj ne akceptas adresojn"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Mankas komando"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Komando uzas nur unu adreson"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Nefinita adresa regesp"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Nefinita komando 's'"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Nefinita komando 'y'"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Nekonata opcio por 's'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "pluraj 'p'-opcioj por komando 's'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "pluraj 'g'-opcioj por komando 's'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "pluraj nombro-opcioj por komando 's'"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "nombro-opcio por komando 's' ne povas esti nul"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "ĉenoj por komando 'y' havas malsamajn longojn"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "atendis pli novan version de sed"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Nevalida uzo de adresmodifilo"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Nekonata komando:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: dosiero %s linio %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e esprimo #%lu, signo %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Ne povas trovi etikedon por salto al '%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: ne povas legi %s: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Ne povis malfermi dosieron %s: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Ne povis malfermi dosieron %s: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Ne povis malfermi dumtempan dosieron %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "eraro en subprocezo"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "opcio 'e' ne realigita"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "komando 'e' ne realigita"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Mankas antaÅ­a regula esprimo"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Ne eblas specifi modifilojn ĉe malplena regula esprimo"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Nevalida referenco \\%d ĉe dekstra flanko de komando 's'"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 uzi sintakso de Perl 5 por regulaj esprimoj en programo.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 uzi sintakso de Perl 5 por regulaj esprimoj en programo.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Retpo�tu cimo-raportojn al: %s .\n"
+"Nepre menciu la vorton '%s' ie en la temlinio.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed versio %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"bazita sur \"GNU sed\" versio 3.02.80\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed versio %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Ĉi tio estas libera programo; vidu la fonton por kopi-kondiĉoj. Estas\n"
+"NENIA GARANTIO; eĉ ne por KOMERCA KVALITO aŭ ADEKVATECO POR DIFINITA CELO,\n"
+"laÅ­ la grado permesita de juro.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: ne povas legi %s: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Ne povis malfermi dosieron %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "ne povis skribi %d eron al %s: %s"
+msgstr[1] "ne povis skribi %d erojn al %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "legeraro ĉe %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: ne povas legi %s: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Sukceso"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Maltrafo"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Nevalida regula esprimo"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Nevalida kunfanda signo"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Nevalida nomo de signoklaso"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Malsuprenstreko ĉe fino"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Nevalida retroreferenco"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "Neparigita [ aÅ­ [^"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "Neparigita ( aÅ­ \\("
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "Neparigita \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Nevalida enhavo de \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Nevalida fino de gamo"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Mankas memoro"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Nevalida antaÅ­a regula esprimo"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Neatendita fino de regula esprimo"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Regula esprimo tro granda"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Neparigita ) aÅ­ \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Mankas antaÅ­a regula esprimo"
diff --git a/src/sed/po/es.gmo b/src/sed/po/es.gmo
new file mode 100644
index 0000000..1052112
--- /dev/null
+++ b/src/sed/po/es.gmo
diff --git a/src/sed/po/es.po b/src/sed/po/es.po
new file mode 100644
index 0000000..08008db
--- /dev/null
+++ b/src/sed/po/es.po
@@ -0,0 +1,448 @@
+# Mensajes en español para GNU sed.
+# Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
+# Cristian Othón Martínez Vera <cfuga@itam.mx>, 2001, 2002, 2003.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0.8\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2003-10-24 12:38-0500\n"
+"Last-Translator: Cristian Othón Martínez Vera <cfuga@itam.mx>\n"
+"Language-Team: Spanish <es@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-1\n"
+"Content-Transfer-Encoding: 8-bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "'!'s múltiples"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "`,' inesperada"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "No se pueden usar +N o ~N como primera dirección"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "`{' sin pareja"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "`}' inesperado"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Caracteres extra después de la orden"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "Se esperaba \\ después de `a', `c' ó `i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' no acepta ninguna dirección"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": no acepta ninguna dirección"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Los comentarios no aceptan ninguna dirección"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Orden faltante"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "La orden solamente usa una dirección"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Dirección de expresión regular sin terminar"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Orden `s' sin terminar"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Orden `y' sin terminar"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Opción desconocida para `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "múltiples opciones `p' para la orden `s'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "múltiples opciones `g' para la orden `s'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "múltiples opciones numéricas para la orden `s'"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "una opción numérica para la orden `s' no puede ser cero"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "las cadenas para la orden y son de longitudes diferentes"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "se esperaba una versión más reciente de sed"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Uso inválido de un modificador de dirección"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Orden desconocida:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: fichero %s línea %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e expresión #%lu, carácter %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "No se puede encontrar la etiqueta para saltar a `%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: no se puede leer %s: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "No se puede abrir el fichero %s: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "No se puede abrir el fichero %s: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "No se puede abrir el fichero temporal %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "error en el subproceso"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "no hay soporte para la opción `e'"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "no hay soporte para el comando `e'"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "No hay una expresión regular previa"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "No se pueden especificar modificadores en expresiones regulares vacías"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Referencia \\%d inválida en el lado derecho del comando `s'"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 utilizar la sintaxis de expresiones regulares de Perl 5\n"
+"                 en el guión.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 utilizar la sintaxis de expresiones regulares de Perl 5\n"
+"                 en el guión.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Envíe reportes de bichos por e-mail a: %s .\n"
+"Asegúrese de incluir la palabra ``%s'' en algún lugar en el campo "
+"``Subject:''.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed versión %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"basado en GNU sed versión 3.02.80\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed versión %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Esto es software libre; vea el código fuente para las condiciones de copia.\n"
+"No hay NINGUNA garantía; ni siquiera de COMERCIABILIDAD o IDONEIDAD PARA UN\n"
+"FIN DETERMINADO, en la extensión permitida por ley.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: no se puede leer %s: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "No se puede abrir el fichero %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "no se puede escribir %d elemento a %s: %s"
+msgstr[1] "no se pueden escribir %d elementos a %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "error al leer de %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: no se puede leer %s: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Éxito"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "No hay coincidencia"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Expresion regular inválida"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Carácter de ordenamiento inválido"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Carácter de nombre de clase inválido"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Diagonal invertida al final"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Referencia hacia atrás inválida"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "[ ó [^ sin pareja"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "( ó \\( sin pareja"
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "\\{ sin pareja"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Contenido inválido de \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Final de rango inválido"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Memoria agotada"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Expresión regular precedente inválida"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Final prematuro de la expresión regular"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Expresión regular demasiado grande"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr ") ó \\) sin pareja"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "No hay una expresión regular previa"
diff --git a/src/sed/po/et.gmo b/src/sed/po/et.gmo
new file mode 100644
index 0000000..fb7777b
--- /dev/null
+++ b/src/sed/po/et.gmo
diff --git a/src/sed/po/et.po b/src/sed/po/et.po
new file mode 100644
index 0000000..e5f0af8
--- /dev/null
+++ b/src/sed/po/et.po
@@ -0,0 +1,453 @@
+# Estonian translations for GNU sed.
+# Copyright (C) 2001 Free Software Foundation, Inc.
+# Toomas Soome <Toomas.Soome@microlink.ee>, 2004.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.1.1\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2004-07-09 16:33+0300\n"
+"Last-Translator: Toomas Soome <Toomas.Soome@microlink.ee>\n"
+"Language-Team: Estonian <et@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=iso-8859-15\n"
+"Content-Transfer-Encoding: 8-bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: sed/compile.c:162
+msgid "multiple `!'s"
+msgstr "korduv `!'"
+
+#: sed/compile.c:163
+msgid "unexpected `,'"
+msgstr "ootamatu `,'"
+
+#: sed/compile.c:164
+msgid "invalid usage of +N or ~N as first address"
+msgstr "+N või ~N ei või kasutada esimese aadressina"
+
+#: sed/compile.c:165
+msgid "unmatched `{'"
+msgstr "liigne `{'"
+
+#: sed/compile.c:166
+msgid "unexpected `}'"
+msgstr "ootamatu `}'"
+
+#: sed/compile.c:167
+msgid "extra characters after command"
+msgstr "lisasümbolid peale käsku"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "peale `a', `c' või `i' peab olema \\"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' ei vaja aadresse"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": ei vaja aadresse"
+
+#: sed/compile.c:171
+msgid "comments don't accept any addresses"
+msgstr "kommentaarid ei vaja aadresse"
+
+#: sed/compile.c:172
+msgid "missing command"
+msgstr "käsk puudub"
+
+#: sed/compile.c:173
+msgid "command only uses one address"
+msgstr "käsk kasutab vaid üht aadressi"
+
+#: sed/compile.c:174
+msgid "unterminated address regex"
+msgstr "lõpetamata aadressi avaldis"
+
+#: sed/compile.c:175
+msgid "unterminated `s' command"
+msgstr "lõpetamata `s' käsk"
+
+#: sed/compile.c:176
+msgid "unterminated `y' command"
+msgstr "lõpetamata `y' käsk"
+
+#: sed/compile.c:177
+msgid "unknown option to `s'"
+msgstr "tundmatu võti `s' käsule"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "korduv `p' võti `s' käsus"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "korduv `g' võti `s' käsus"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "korduvad numbrivõtmed `s' käsus"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "numbrivõti `s' käsus ei või olla null"
+
+#: sed/compile.c:182
+msgid "strings for `y' command are different lengths"
+msgstr "sõned käsus `y' on erineva pikkusega"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr "eraldav sübol ei ole ühe-baidiline sümbol"
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "oodati sedi uuemat versiooni"
+
+#: sed/compile.c:185
+msgid "invalid usage of line address 0"
+msgstr "vigane rea aadressi 0 kasutamine"
+
+#: sed/compile.c:186
+#, c-format
+msgid "unknown command: `%c'"
+msgstr "tundmatu käsk: `%c'"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: fail %s rida %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e avaldis #%lu, sümbol %lu: %s\n"
+
+#: sed/compile.c:1644
+#, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "ei leia märgendit, et hüpata kohale `%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: ei saa lugeda %s: %s\n"
+
+#: sed/execute.c:673
+#, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "%s ei saa toimetada: see on terminal"
+
+#: sed/execute.c:677
+#, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "%s ei saa toimetada: see ei ole tavaline fail"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "ajutist faili %s ei saa avada: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "viga alamprotsessis"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "võtit `e' ei toetata"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "käsku `e' ei toetata"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr "eelmist regulaaravaldist pole"
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr "muudatusi tühjale regulaaravaldisele ei saa määrata"
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "vigane viide \\%d käsu `s' paremas pooles"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 kasuta skriptis Perl 5 regulaaravaldiste süntaksit.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+"Kasutamine: %s [võti]... {ainult-skript-kui-teisi-skripte-pole} [sisend-"
+"fail]...\n"
+"\n"
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+"  -n, --quiet, --silent\n"
+"                 keela mustriruumi automaatne väljastamine\n"
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+"  -e skript, --expression=skript\n"
+"                 lisa täidetavate käskluste skript\n"
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+"  -f skripti-fail, --file=skripti-fail\n"
+"                 lisa skripti-faili sisu täidetavate käskluste hulka\n"
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+"  -i[SUFIKS], --in-place[=SUFIKS]\n"
+"                 toimeta faile (kui kasutati sifiksit, loob ka varukoopia)\n"
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+"  -l N, --line-length=N\n"
+"                 määra `l' käsule soovitatav rea pikkus\n"
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+"  --posix\n"
+"                 blokeeri kõik GNU laiendused.\n"
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -r, --regexp-extended\n"
+"                 kasuta skriptis laiendatud regulaaravaldiste süntaksit.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+"  -s, --separate\n"
+"                 käsitle faile ükshaaval, mitte ühe jätkuva voona.\n"
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+"  -u, --unbuffered\n"
+"                 loe sisendfailist minimaalne kogus andmeid ja tühjenda\n"
+"                 väljundpuhvreid sagedamini\n"
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr "      --help     väljast see abiinfo ja lõpeta töö\n"
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr "      --version  väljasta versiooniinfo ja lõpeta töö\n"
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+"\n"
+"Kui võtmeid -e, --expression, -f või --file ei kasutata, loetakse\n"
+"esimene argument, mis pole võti, sed skriptiks. Kõik järgnevad argumendid "
+"on\n"
+"sisendfailide nimed; kui sisendfaile ei antud, loetakse standardsisendit.\n"
+"\n"
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Postitage teated vigadest: %s .\n"
+"Lisage kindlasti sõna ``%s'' ``Subject:'' reale.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed versioon %s\n"
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"põhineb GNU sed versioonil %s\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed versioon %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"See on vaba tarkvara; kopeerimistingimused leiate lähtetekstidest. Garantii\n"
+"PUUDUB; ka müügiks või mingil eesmärgil kasutamiseks, vastavalt seadustega\n"
+"lubatud piiridele.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s ei saa eemaldada: %s"
+
+#: lib/utils.c:143
+#, c-format
+msgid "couldn't open file %s: %s"
+msgstr "faili %s ei saa avada: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "%d elemendi faili %s kirjutamine ebaõnnestus: %s"
+msgstr[1] "%d elemendi faili %s kirjutamine ebaõnnestus: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "lugemisviga %s: %s"
+
+#: lib/utils.c:341
+#, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s ei saa ümber nimetada: %s"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Edukas"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Ei leia"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Vigane regulaaravaldis"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Vigane sortimise sümbol"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Vigane sümbolite klassi nimi"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Lõpetav langkriips"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Vigane tagasi viide"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "Puudub [ või [^"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "Puudub ( või \\("
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "Puudub \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Vigane \\{\\} sisu"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Vigane vahemiku lõpp"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Mälu on otsas"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Vigane eelnev regulaaravaldis"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Ootamatu regulaaravaldise lõpp"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Regulaaravaldis on liiga suur"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Puudub ) või \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Eelmist regulaaravaldist pole"
diff --git a/src/sed/po/fi.gmo b/src/sed/po/fi.gmo
new file mode 100644
index 0000000..daadc1d
--- /dev/null
+++ b/src/sed/po/fi.gmo
diff --git a/src/sed/po/fi.po b/src/sed/po/fi.po
new file mode 100644
index 0000000..f29cd3d
--- /dev/null
+++ b/src/sed/po/fi.po
@@ -0,0 +1,448 @@
+# Finnish translations for GNU sed.
+# Copyright © 2002 Free Software Foundation, Inc.
+# Sami J. Laine <sami.laine@iki.fi>, 2002
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed-4.0.8\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2003-12-07 09:35+0200\n"
+"Last-Translator: Sami J. Laine <sami.laine@iki.fi>\n"
+"Language-Team: Finnish <translation-team-fi@lists.sourceforge.net>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-15\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=n != 1;\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Useita \"!\"-merkkejä"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "Odottamaton \",\""
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "Ensimmäisenä osoitteena ei voi olla +N tai ~N"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "Pariton \"{\""
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "Pariton \"}\""
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Ylimääräisiä merkkejä komennon jälkeen"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "\\ odotettiin merkkien `a', `c' tai `i' jälkeen"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "\"}\" ei tarvitse osoitteita"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": ei tarvitse osoitteita"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Kommentit eivät hyväksy osoitteita"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Puuttuva komento"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Komento käyttää vain yhtä osoitetta"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Päättymätön osoite vakiolauseessa"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Päättymätön \"s\"-komento"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Päättymätön \"y\"-komento"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Tuntematon valitsin \"s\":lle"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "useita \"p\"-valitsimia \"s\"-komennolle"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "useita \"g\"-valitsimia \"s\"-komennolle"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "useita valitsimia \"s\"-komennolle"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "numeerinen valitsin \"s\"-komennolle ei voi olla nolla"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "merkkijonot \"y\"-komennolle ovat pituudeltaan vaihtelevia"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "odotettiin uudempaa versiota sed:stä"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Komento käyttää vain yhtä osoitetta"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Tuntematon komento:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: tiedosto %s rivi %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e lauseke #%lu, merkki %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Nimikettä hypylle kohteeseen \"%s\" ei löydy"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: ei voida lukea syötettä %s: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Tiedostoa %s ei voitu avata: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Tiedostoa %s ei voitu avata: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Väliaikaistiedostoa %s ei voitu avata: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "virhe lapsiprosessissa"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "valitsin `e' ei ole tuettu"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "komento `e' ei ole tuettu"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Ei aikaisempaa säännöllistä lausetta"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Muuttajia ei voida määritellä tyhjään säännöliseen lausekkeeseen"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Virheellinen viittaus \\%d komennon `s' oikealla puolella"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 käytä Perl 5:en mukaista säännöllisten lauseiden\n"
+"                 syntaksia skriptissä.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 käytä Perl 5:en mukaista säännöllisten lauseiden\n"
+"                 syntaksia skriptissä.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Lähetä virheraportit osoitteeseen %s .\n"
+"Sisällytä sana \"%s\" viestin aihekenttään (\"Subject\"-kenttään).\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed versio %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"perustuu GNU sed versioon 3.02.80\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed versio %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Tämä ohjelma on vapaa ohjelmisto; tarkista jakeluehdot lähdekoodista.\n"
+"Tälle ohjelmalle ei anneta minkäänlaista takuuta; ei edes takuuta\n"
+"kaupallisesti hyväksyttävästä laadusta tai soveltuvuudesta tiettyyn\n"
+"tarkoitukseen.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: ei voida lukea syötettä %s: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Tiedostoa %s ei voitu avata: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "%d kohdetta ei voitu kirjoittaa tulosteeseen %s: %s"
+msgstr[1] "%d kohdetta ei voitu kirjoittaa tulosteeseen %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "lukuvirhe syötteessä %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: ei voida lukea syötettä %s: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Onnistui"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Ei osumaa"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Virheellinen säännöllinen lauseke"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Virheellinen vertailumerkki"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Virhellinen merkkiluokan nimi"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Seuraava kenoviiva"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Virheellinen takaisinviittaus"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "Pariton \"[\" tai \"[^\""
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "Pariton \"(\" tai \"\\(\""
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "Pariton \"\\{\""
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Virheellinen sisältö \\{\\}:ssä"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Virheellinen välin loppu"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Muisti loppu"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Virheellinen edeltävä säännöllinen lauseke"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Ennenaikainen säännöllisen lausekkeen loppu"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Säännöllinen lauseke on liian suuri"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Pariton \")\" tai \"\\)\""
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Ei aikaisempaa säännöllistä lausetta"
diff --git a/src/sed/po/fr.gmo b/src/sed/po/fr.gmo
new file mode 100644
index 0000000..0e9f722
--- /dev/null
+++ b/src/sed/po/fr.gmo
diff --git a/src/sed/po/fr.po b/src/sed/po/fr.po
new file mode 100644
index 0000000..523c229
--- /dev/null
+++ b/src/sed/po/fr.po
@@ -0,0 +1,469 @@
+# French translation of GNU sed.
+# Copyright (C) 1998, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+# Gaël Quéri <gael@lautre.net>, 1998.
+#
+# J'ai préféré utiliser le terme <<Expression régulière>> plutôt
+# qu'<<expression rationnelle>> car celui-là est moins déroutant
+# pour ceux qui sont habitués à la formulation anglaise
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.1.1\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2004-07-12 00:09+0200\n"
+"Last-Translator: Gaël Quéri <gael@lautre.net>\n"
+"Language-Team: French <traduc@traduc.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-1\n"
+"Content-Transfer-Encoding: 8-bit\n"
+"Plural-Forms: nplurals=2; plural=(n > 1);\n"
+
+#: sed/compile.c:162
+msgid "multiple `!'s"
+msgstr "`!' multiples"
+
+#: sed/compile.c:163
+msgid "unexpected `,'"
+msgstr "`,' inattendue"
+
+#: sed/compile.c:164
+msgid "invalid usage of +N or ~N as first address"
+msgstr "utilisation invalide de +N ou ~N comme première adresse"
+
+#: sed/compile.c:165
+msgid "unmatched `{'"
+msgstr "`{' non refermée"
+
+#: sed/compile.c:166
+msgid "unexpected `}'"
+msgstr "`}' inattendu"
+
+#: sed/compile.c:167
+msgid "extra characters after command"
+msgstr "caractères inutiles après la commande"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "\\ attendu après `a', `c' ou `i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' n'a besoin d'aucune adresse"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": n'a besoin d'aucune adresse"
+
+#: sed/compile.c:171
+msgid "comments don't accept any addresses"
+msgstr "les commentaires n'acceptent aucune adresse"
+
+#: sed/compile.c:172
+msgid "missing command"
+msgstr "commande manquante"
+
+#: sed/compile.c:173
+msgid "command only uses one address"
+msgstr "la commande n'utilise qu'une adresse"
+
+#: sed/compile.c:174
+msgid "unterminated address regex"
+msgstr "expression régulière d'adresse inachevée"
+
+#: sed/compile.c:175
+msgid "unterminated `s' command"
+msgstr "commande `s' inachevée"
+
+#: sed/compile.c:176
+msgid "unterminated `y' command"
+msgstr "commande `y' inachevée"
+
+#: sed/compile.c:177
+msgid "unknown option to `s'"
+msgstr "option inconnue pour `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "plusieurs options `p' à la commande `s'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "plusieurs options `g' à la commande `s'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "plusieurs options numériques à la commande `s'"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "l'option numérique de la comande `s' ne peut être nulle"
+
+#: sed/compile.c:182
+msgid "strings for `y' command are different lengths"
+msgstr "les chaînes destinées à la commande `y' ont des longueurs différentes"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr "le caractère délimiteur n'est pas un caractère à un seul octet"
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "une version plus récente de sed est attendue"
+
+#: sed/compile.c:185
+msgid "invalid usage of line address 0"
+msgstr "utilisation invalide de l'adresse de ligne 0"
+
+#: sed/compile.c:186
+#, c-format
+msgid "unknown command: `%c'"
+msgstr "commande inconnue: `%c'"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: fichier %s ligne %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e expression n°%lu, caractère %lu: %s\n"
+
+#: sed/compile.c:1644
+#, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "impossible de trouver l'étiquette pour sauter à `%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: impossible de lire %s: %s\n"
+
+#: sed/execute.c:673
+#, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "impossible d'éditer %s: est un terminal"
+
+#: sed/execute.c:677
+#, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "impossible d'éditer %s: ce n'est pas un fichier régulier"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "impossible d'ouvrir le fichier temporaire %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "erreur dans le sous-processus"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "l'option `e' n'est pas supportée"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "la commande `e' n'est pas supportée"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr "pas d'expression régulière précédente"
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr ""
+"impossible de spécifier des modifieurs sur une expression\n"
+"rationnelle vide"
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "référence \\%d invalide dans le côté droit de la commande `s'"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 utiliser la syntaxe des expressions régulières\n"
+"                 de Perl 5 dans le script.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+"Utilisation: %s [OPTION]... {script-seulement-si-pas-d'autre-script}\n"
+"[fichier-d'entrée]...\n"
+"\n"
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+"  -n, --quiet, --silent\n"
+"                 supprimer l'écriture automatique de l'espace des motifs\n"
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+"  -e script, --expression=script\n"
+"                 ajouter le script aux commandes à être exécutées\n"
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+"  -f fichier-script, --file=fichier-script\n"
+"                 ajouter le contenu de fichier-script aux commandes\n"
+"                 à être exécutées\n"
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+"  -i[SUFFIXE], --in-place[=SUFFIXE]\n"
+"                 éditer les fichiers à leur place (fait une\n"
+"                 sauvegarde si l'extension est fournie)\n"
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+"  -l N, --line-length=N\n"
+"                spécifier la longueur de coupure de ligne désirée pour la\n"
+"                commande `l'\n"
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+"  --posix\n"
+"                 désactiver toutes les extensions GNU.\n"
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -r, --regexp-extended\n"
+"                 utiliser la syntaxe des expressions régulières\n"
+"                 étendues dans le script.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+"  -s, --separate\n"
+"                considérer les fichiers comme séparés plutôt que comme un\n"
+"                simple flux long et continu.\n"
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+"  -u, --unbuffered\n"
+"                 charger des quantités minimales de données depuis les\n"
+"                 fichiers d'entrée et libérer les tampons de sortie plus\n"
+"                 souvent\n"
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr "      --help     afficher cette aide et sortir\n"
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+"      --version  afficher les informations de version du logiciel et sortir\n"
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+"\n"
+"Si aucune option -e, --expression, -f ou --file n'est donnée, le\n"
+"premier argument qui n'est pas une option sera pris comme étant le script\n"
+"sed à interpréter. Tous les arguments restants sont les noms des fichiers\n"
+"d'entrée; si aucun fichier d'entrée n'est spécifiée, l'entrée standard\n"
+"est lue.\n"
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Rapporter toutes anomalies à: %s.\n"
+"N'oubliez pas d'inclure le mot ``%s'' quelque-part dans la zone "
+"``Subject:''\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed version %s\n"
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"fondé sur GNU sed version %s\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed version %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Ce logiciel est libre; voir les sources pour les conditions de "
+"reproduction.\n"
+"AUCUNE garantie n'est donnée; y compris pour des RAISONS COMMERCIALES ou\n"
+"pour RÉPONDRE A UN BESOIN PARTICULIER, à l'étendue permise par la loi.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, c-format
+msgid "cannot remove %s: %s"
+msgstr "impossible de supprimer %s: %s"
+
+#: lib/utils.c:143
+#, c-format
+msgid "couldn't open file %s: %s"
+msgstr "impossible d'ouvrir le fichier %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "impossible d'écrire %d item à %s: %s"
+msgstr[1] "impossible d'écrire %d items à %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "erreur de lecture sur %s: %s"
+
+#: lib/utils.c:341
+#, c-format
+msgid "cannot rename %s: %s"
+msgstr "impossible de renommer %s: %s"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Succès"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Pas de concordance"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Expression régulière invalide"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Caractère de collation invalide"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Nom de classe de caractères invalide"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Antislash de protection"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Référence arrière invalide"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "[ ou [^ non refermé"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "( ou \\( non refermé"
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "\\{ non refermé"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Contenu de \\{\\} invalide"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Fin d'intervalle invalide"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Mémoire épuisée"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "L'expression régulière précédente est invalide"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Fin prématurée d'une expression régulière"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Expression régulière trop grande"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr ") ou \\) non refermé"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Pas d'expression régulière précédente"
diff --git a/src/sed/po/ga.gmo b/src/sed/po/ga.gmo
new file mode 100644
index 0000000..d4da4dd
--- /dev/null
+++ b/src/sed/po/ga.gmo
diff --git a/src/sed/po/ga.po b/src/sed/po/ga.po
new file mode 100644
index 0000000..9946346
--- /dev/null
+++ b/src/sed/po/ga.po
@@ -0,0 +1,463 @@
+# Irish translations for sed
+# Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+# Kevin Patrick Scannell <scannell@SLU.EDU>, 2003, 2004.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.1.1\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2004-07-07 11:04-0500\n"
+"Last-Translator: Kevin Patrick Scannell <scannell@SLU.EDU>\n"
+"Language-Team: Irish <ga@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-1\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=4; plural=n==1 ? 0 : (n>1 && n<7) ? 1 : (n>6 && n "
+"<11) ? 2 : 3;\n"
+
+#: sed/compile.c:162
+msgid "multiple `!'s"
+msgstr "`!'-anna iomadúla"
+
+#: sed/compile.c:163
+msgid "unexpected `,'"
+msgstr "`,' gan choinne"
+
+#: sed/compile.c:164
+msgid "invalid usage of +N or ~N as first address"
+msgstr "ní féidir +N nó ~N a úsáid mar an chéad seoladh"
+
+#: sed/compile.c:165
+msgid "unmatched `{'"
+msgstr "`{' corr"
+
+#: sed/compile.c:166
+msgid "unexpected `}'"
+msgstr "`}' gan choinne"
+
+#: sed/compile.c:167
+msgid "extra characters after command"
+msgstr "carachtair breise i ndiaidh an t-ordú"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "bhíothas ag súil le \\ i ndiaidh `a', `c', nó `i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "Níl fáilte roimh seoltaí le `}'"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr "Níl fáilte roimh seoltaí le `:'"
+
+#: sed/compile.c:171
+msgid "comments don't accept any addresses"
+msgstr "níl fáilte roimh seoltaí le nótaí tráchta"
+
+#: sed/compile.c:172
+msgid "missing command"
+msgstr "ordú ar iarraidh"
+
+#: sed/compile.c:173
+msgid "command only uses one address"
+msgstr "ní úsáidtear an t-ordú ach seoladh amháin"
+
+#: sed/compile.c:174
+msgid "unterminated address regex"
+msgstr "seoladh regex gan chríochnú"
+
+#: sed/compile.c:175
+msgid "unterminated `s' command"
+msgstr "ordú `s' gan chríochnú"
+
+#: sed/compile.c:176
+msgid "unterminated `y' command"
+msgstr "ordú `y' gan chríochnú"
+
+#: sed/compile.c:177
+msgid "unknown option to `s'"
+msgstr "rogha anaithnid i ndiaidh `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "an iomarca roghanna `p' i ndiaidh `s'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "an iomarca roghanna `g' i ndiaidh `s'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "an iomarca roghanna uimhriúla i ndiaidh `s'"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "ní cheadaítear nialas mar rogha uimhriúil leis an ordú `s'"
+
+#: sed/compile.c:182
+msgid "strings for `y' command are different lengths"
+msgstr "ní aon fad amháin ar na teaghráin leis an ordú `y'"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr "tá an teorantóir ina charachtar ilbheart"
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "bhíothas ag súil le leagan `sed' níos úire"
+
+#: sed/compile.c:185
+msgid "invalid usage of line address 0"
+msgstr "ní féidir an seoladh líne 0 a úsáid"
+
+#: sed/compile.c:186
+#, c-format
+msgid "unknown command: `%c'"
+msgstr "ordú anaithnid: `%c'"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: comhad %s líne %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e slonn #%lu, char %lu: %s\n"
+
+#: sed/compile.c:1644
+#, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "níl aon fháil ar an lipéad `%s' don léim"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: ní féidir %s a léamh: %s\n"
+
+# Irish is nice this way, no initial mutation on 'rud'! -- KPS
+# Include all three b/c I'm using template version of "Plural-Forms"
+#: sed/execute.c:673
+#, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "níorbh fhéidir %s a chur in eagar; is teirminéal é"
+
+#: sed/execute.c:677
+#, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "níorbh fhéidir %s a chur in eagar: ní gnáthcomhad é"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "níorbh fhéidir an comhad sealadach %s a oscailt: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "earráid i bhfo-phróiseas"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "níl an rogha `e' ar fáil"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "níl an t-ordú `e' ar fáil"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr "níl aon slonn ionadaíochta roimh seo"
+
+# bunathraitheoir is in FARF - KPS
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr "ní féidir bunathraitheoirí a shonrú le slonn bán"
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "tagairt neamhbhailí \\%d ar dheis ordú `s'"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 bain úsáid as sloinn ionadaíochta atá ag Perl 5.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+"Úsáid: %s [ROGHA]... {script-mura-bhfuil-script-eile} [inchomhad]...\n"
+"\n"
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+"  -n, --quiet, --silent\n"
+"                 stop priontáil uathoibríoch den spás patrúin\n"
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+"  -e script, --expression=script\n"
+"                 cuir an script leis na horduithe le rith\n"
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+"  -f comhad-script, --file=comhad-script\n"
+"                 cuir na línte i `comhad-script' leis na horduithe le rith\n"
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+"  -i[IARMHÍR], --in-place[=IARMHÍR]\n"
+"                 cuir eagar ar comhaid san áit a bhfuil siad (agus déan\n"
+"                 cúltaca má tá IARMHÍR tugtha\n"
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+"  -l N, --line-length=N\n"
+"                 ceap an fad timfhillte le haghaidh an ordaithe `l'\n"
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+"  --posix\n"
+"                 díchumasaigh gach feabhsúchán GNU.\n"
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -r, --regexp-extended\n"
+"                 úsáid sloinn ionadaíochta feabhsaithe sa script.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+"  -s, --separate\n"
+"                 féach ar comhaid ina leith seachas mar sruth leanúnach.\n"
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+"  -u, --unbuffered\n"
+"                 lódáil cantaí beaga ó na comhaid ionchur agus sruthlaigh\n"
+"                 na maoláin aschur níos minice\n"
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr "      --help     taispeáin an chabhair seo agus éirigh as\n"
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr "      --version  taispeáin eolas faoin leagan agus éirigh as\n"
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+"\n"
+"Mura bhfuil rogha -e, --expression, -f, nó --file ann, glacfar an chéad\n"
+"argóint nach raibh ina rogha mar an script `sed' a léirmhíniú.  Tá gach\n"
+"argóint eile an t-ainm de comhad ionchuir; mura bhfuil comhad ann\n"
+"léigh ón ionchur caighdeánach.\n"
+"\n"
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Seol tuairiscí fabhtanna chuig: %s .\n"
+"Cuir an focal ``%s'' áit éigin sa líne ``Subject:'' le do thoil.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed, leagan %s\n"
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"bunaithe ar GNU sed, leagan %s\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed, leagan %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Is saorbhogearra an ríomhchlár seo; féach ar an bhunchód le haghaidh\n"
+"coinníollacha cóipeála.  Níl baránta AR BITH ann; go fiú níl baránta ann\n"
+"d'INDÍOLTACHT nó FEILIÚNACHT DO FHEIDHM AR LEITH, an oiread atá ceadaithe\n"
+"de réir dlí.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, c-format
+msgid "cannot remove %s: %s"
+msgstr "ní féidir %s a scriosadh: %s"
+
+#: lib/utils.c:143
+#, c-format
+msgid "couldn't open file %s: %s"
+msgstr "níorbh fhéidir an comhad %s a oscailt: %s"
+
+# Irish is nice this way, no initial mutation on 'rud'! -- KPS
+# Include all three b/c I'm using template version of "Plural-Forms"
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "níorbh fhéidir %d rud a scríobh i %s: %s"
+msgstr[1] "níorbh fhéidir %d rud a scríobh i %s: %s"
+msgstr[2] "níorbh fhéidir %d rud a scríobh i %s: %s"
+msgstr[3] "níorbh fhéidir %d rud a scríobh i %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "earráid ag léamh %s: %s"
+
+#: lib/utils.c:341
+#, c-format
+msgid "cannot rename %s: %s"
+msgstr "ní féidir %s a athainmniú: %s"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Bua!"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Níl a leithéid ann"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Slonn ionadaíochta neamhbhailí"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Carachtar cóimheasa neamhbhailí"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Aicme charachtair neamhbhailí"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Cúlslais ag deireadh"
+
+# coinage - KPS
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Cúltagairt neamhbhailí"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "[ nó [^ corr"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "( nó \\( corr"
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "\\{ corr"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Ábhar neamhbhailí idir \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Deireadh raoin neamhbhailí"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Cuimhne ídithe"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Is neamhbhailí an slonn ionadaíochta roimh seo"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Deireadh le slonn ionadaíochta gan choinne"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Slonn ionadaíochta rómhór"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr ") nó \\) corr"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Níl aon slonn ionadaíochta roimh seo"
diff --git a/src/sed/po/gl.gmo b/src/sed/po/gl.gmo
new file mode 100644
index 0000000..e73bc62
--- /dev/null
+++ b/src/sed/po/gl.gmo
diff --git a/src/sed/po/gl.po b/src/sed/po/gl.po
new file mode 100644
index 0000000..dd62411
--- /dev/null
+++ b/src/sed/po/gl.po
@@ -0,0 +1,448 @@
+# Galician translation of GNU sed
+# Copyright (C) 1999, 2002 Free Software Foundation, Inc.
+# Jacobo Tarrío Barreiro <jtarrio@trasno.net>, 1999, 2002.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2002-10-25 15:57+0200\n"
+"Last-Translator: Jacobo Tarrío Barreiro <jtarrio@trasno.net>\n"
+"Language-Team: Galician <gpul-traduccion@ceu.fi.udc.es>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=iso-8859-1\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=n!=1;\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Múltiples `!'s"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "`,' inesperada"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "Non se pode usar +N ou ~N como primeira dirección"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "`{' sen parella"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "`}' inesperado"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Caracteres extra despois da instrucción"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "Esperábase \\ despois de `a', `c' ou `i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' non acepta un enderezo"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": non acepta un enderezo"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Os comentarios non aceptan enderezos"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Falta unha instrucción"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "A instrucción só usa un enderezo"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Expresión regular de enderezo non rematada"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Instrucción `s' non rematada"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Instrucción `y' non rematada"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Opción de `s' descoñecida"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "múltiples opcións `p' para a instrucción `s'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "múltiples opcións `g' para a instrucción `s'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "múltiples opcións numéricas para a instrucción `s'"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "unha opción numérica para a instrucción `s' non pode ser cero"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "as cadeas para a instrucción y teñen lonxitudes diferentes"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr ""
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Uso non válido de modificador de dirección"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Instrucción descoñecida:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: ficheiro %s liña %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e expresión #%lu, carácter %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Non se puido atopa-la etiqueta para saltar a `%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: non se puido ler %s: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Non se puido abri-lo ficheiro %s: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Non se puido abri-lo ficheiro %s: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Non se puido abri-lo ficheiro %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "erro no subproceso"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "a opción `e' non está soportada"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "o comando `e' non está soportado"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Non hai unha expresión regular anterior"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Non se poden especificar modificadores nunha expresión regular baleira"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Referencia \\%d non válida no lado dereito do comando `s'"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 usa-la sintaxe de expresións regulares de Perl 5 no "
+"script.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 usa-la sintaxe de expresións regulares de Perl 5 no "
+"script.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Informe dos erros no programa a %s .\n"
+"Informe dos erros na traducción a gpul-traduccion@ceu.fi.udc.es .\n"
+"Asegúrese de incluí-la palabra ``%s'' nalgunha parte do campo ``Subject:''.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed versión %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr "baseado en GNU sed versión 3.02.80\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed versión %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Isto é software libre; vexa o código fonte polas condicións de copia. NON "
+"hai\n"
+"garantía; nin sequera de COMERCIABILIDADE ou APTITUDE PARA UN FIN "
+"DETERMINADO,\n"
+"ata o que permite a lei.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: non se puido ler %s: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Non se puido abri-lo ficheiro %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "non se puido escribir %d elemento en %s: %s"
+msgstr[1] "non se puideron escribir %d elementos en %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "erro de lectura en %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: non se puido ler %s: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Éxito"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Non se atopou"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Expresión regular non válida"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Carácter de ordeamento non válido"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Nome de clase de caracteres non válido"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Barra invertida á fin de liña"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Referencia cara a atrás non válida"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "[ ou [^ sen parella"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "( ou \\( sen parella"
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "\\{ sen parella"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Contido de \\{\\} non válido"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Fin de rango non válida"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Memoria esgotada"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Expresión regular anterior non válida"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Fin prematura da expresión regular"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Expresión regular grande de máis"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr ") ou \\) sen parella"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Non hai unha expresión regular anterior"
diff --git a/src/sed/po/he.gmo b/src/sed/po/he.gmo
new file mode 100644
index 0000000..19cf09f
--- /dev/null
+++ b/src/sed/po/he.gmo
diff --git a/src/sed/po/he.po b/src/sed/po/he.po
new file mode 100644
index 0000000..5140626
--- /dev/null
+++ b/src/sed/po/he.po
@@ -0,0 +1,439 @@
+# Hebrew messages for GNU Sed          -*- coding: hebrew-iso-8bit -*-
+# Copyright (C) 2001 Free Software Foundation, Inc.
+# Eli Zaretskii <eliz@is.elta.co.il>, 2001.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 3.02.80\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2001-08-04 20:37+0300\n"
+"Last-Translator: Eli Zaretskii <eliz@gnu.org>\n"
+"Language-Team: Hebrew <eliz@gnu.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-8\n"
+"Content-Transfer-Encoding: 8-bit\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "`!' éåáéø"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "éåôö-éúìá `,'"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "äðåùàø úáåúëë ~N åà +N-á ùîúùäì ïúéð àì"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "âåæ-ïá åì ïéàù `{'"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "éåôö-éúìá `}'"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "äãå÷ôä éøçà íéøúåéî íéåú"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr ""
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "úåáåúë ìá÷î åðéà `}'"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr "úåáåúë ìá÷î åðéà :"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "úåáåúë úåìá÷î ïðéà úåøòä"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "äøñç äãå÷ô"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "ãáìá úçà úáåúë úìá÷î åæ äãå÷ô"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "íåéñ àìì úáåúë ìù éøìåâø éåèéá"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "íåéñ àìì `s' úãå÷ô"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "íåéñ àìì `y' úãå÷ô"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "`s' ìù øëåî-éúìá ïééôàî"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "`s' äãå÷ôì íéáåøî `p' éðééôàî"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "`s' äãå÷ôì íéáåøî `g' éðééôàî"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "`s' äãå÷ôì íéáåøî øôñî éðééôàî"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "ñôà úåéäì ìåëé åðéà `s' äãå÷ôì éøôñî ïééôàî"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "äðåù êøåàá ïðéä `y' äãå÷ôì úåæåøçî"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr ""
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "úáåúëä ïééöîá éåâù ùåîéù"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "úøëåî-éúìá äãå÷ô äðéä"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s úéðëúá (%s õáå÷ ìù %lu äøåù) %s äàéâù\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s úéðëúá (%lu 'ñî -e éåèéá ìù %lu 'ñî åú) %s äàéâù\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "äàöîð àì `%s' äöéô÷ úéååú"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s úéðëúá %s úàéø÷á (%s) äàéâù\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "%s õáå÷ úçéúôá äì÷ú"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "%s õáå÷ úçéúôá äì÷ú"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "%s õáå÷ úçéúôá äì÷ú"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr ""
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr ""
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr ""
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr ""
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr ""
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr ""
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"              .%s úáåúëì (bugs) äì÷ú éçååéã çåìùì àð\n"
+"   .(``Subject'') ``ïåãðä'' úøåùá ``%s'' äìéî ìåìëì åãéô÷ä àðà\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"äååìî äðéà úéðëúä .øå÷îä éöá÷ úà äàø ,èåøéô øúéì ;úéùôç äðëú äðéä åæ úéðëú\n"
+"    äãéîá úàæå ,àéäù úéìëú åæéàì äîàúä åà úåøéçñ íùì àì åìéôà ;úåéøçà áúëá\n"
+"                                                          .úàæ øùôàî ÷åçäù\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s úéðëúá %s úàéø÷á (%s) äàéâù\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "%s õáå÷ úçéúôá äì÷ú"
+
+#: lib/utils.c:220
+#, fuzzy, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "èìôäî íé÷ìç %d ìù %s-ì äáéúëá (%s) äì÷ú"
+msgstr[1] "èìôäî íé÷ìç %d ìù %s-ì äáéúëá (%s) äì÷ú"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "%s úàéø÷á (%s) äì÷ú"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s úéðëúá %s úàéø÷á (%s) äàéâù\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:153
+#, fuzzy
+msgid "Unmatched [ or [^"
+msgstr "âåæ-ïá åì ïéàù `{'"
+
+#: lib/regcomp.c:156
+#, fuzzy
+msgid "Unmatched ( or \\("
+msgstr "âåæ-ïá åì ïéàù `{'"
+
+#: lib/regcomp.c:159
+#, fuzzy
+msgid "Unmatched \\{"
+msgstr "âåæ-ïá åì ïéàù `{'"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr ""
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:180
+#, fuzzy
+msgid "Unmatched ) or \\)"
+msgstr "âåæ-ïá åì ïéàù `{'"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr ""
diff --git a/src/sed/po/hr.gmo b/src/sed/po/hr.gmo
new file mode 100644
index 0000000..1e7a484
--- /dev/null
+++ b/src/sed/po/hr.gmo
diff --git a/src/sed/po/hr.po b/src/sed/po/hr.po
new file mode 100644
index 0000000..e5d9552
--- /dev/null
+++ b/src/sed/po/hr.po
@@ -0,0 +1,447 @@
+# Translation of sed to Croatian
+# Copyright (C) 2002 Free Software Foundation, Inc.
+# Denis Lackovi <delacko@fly.srk.fer.hr>, 2002.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 3.02a\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2002-06-14 15:17-01\n"
+"Last-Translator: Denis Lackovic <delacko@fly.srk.fer.hr>\n"
+"Language-Team: Croatian <lokalizacija@linux.hr>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n==1?0:1);\n"
+"X-Generator: TransDict server\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Višestruki `!'"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "Neo�ekivani `,'"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "Ne mogu koristiti +N ili ~N kao prvu adresu"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "Neuparena `{'"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "Neo�ekivana `}'"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Višak znakova nakon komande"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr ""
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' ne želi nikakve adrese"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": ne želi nikakve adrese"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Komentari ne primaju adrese"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Nedostaje naredba"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Naredba koristi samo jednu adresu"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Nezavršeni regularni izraz adrese"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Nezavršena `s' naredba"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Nezavršena `y' naredba"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Nepoznata opcija za `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "višestruke `p' opcije za `s' naredbu"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "višestruke `g' opcije za `s' naredbu"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "višak opcija za za `s' naredbu"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "broj opcija za naredbu `s' ne smije biti nula"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "znakovni nizovi za naredbu y su razli�itih duljina"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr ""
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Neispravna uporaba adresnog modifikatora"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Nepoznata naredba:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: datoteka %s redak %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e izraz #%lu, znak %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Ne mogu naći labelu na koju bi trebalo sko�iti `%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: ne mogu �itati %s: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Ne mogu otvoriti datoteku %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Ne mogu otvoriti datoteku %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Ne mogu otvoriti datoteku %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr ""
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr ""
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr ""
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Nedostaje prethodni regularni izraz"
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr ""
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr ""
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"E-mail bug prijave (na engleskom) pošaljite na: %s .\n"
+"Uklju�ite rije� ``%s'' u polju ``Subject:''.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Ovo je slobodni softver; pogledajte kod kako biste doznali uvjete "
+"kopiranja.\n"
+" NEMA garancije;\n"
+"�ak ni tvrdnje o ISPLATIVOSTI ili POGODNOSTI ZA NEKU SVRHU.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: ne mogu �itati %s: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Ne mogu otvoriti datoteku %s"
+
+#: lib/utils.c:220
+#, fuzzy, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "Ne mogu upisati %d item%s u %s: %s"
+msgstr[1] "Ne mogu upisati %d item%s u %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "Greška u �itanju na %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: ne mogu �itati %s: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:138
+#, fuzzy
+msgid "Invalid regular expression"
+msgstr "Nedostaje prethodni regularni izraz"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:153
+#, fuzzy
+msgid "Unmatched [ or [^"
+msgstr "Neuparena `{'"
+
+#: lib/regcomp.c:156
+#, fuzzy
+msgid "Unmatched ( or \\("
+msgstr "Neuparena `{'"
+
+#: lib/regcomp.c:159
+#, fuzzy
+msgid "Unmatched \\{"
+msgstr "Neuparena `{'"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr ""
+
+#: lib/regcomp.c:171
+#, fuzzy
+msgid "Invalid preceding regular expression"
+msgstr "Nedostaje prethodni regularni izraz"
+
+#: lib/regcomp.c:174
+#, fuzzy
+msgid "Premature end of regular expression"
+msgstr "Nedostaje prethodni regularni izraz"
+
+#: lib/regcomp.c:177
+#, fuzzy
+msgid "Regular expression too big"
+msgstr "Nedostaje prethodni regularni izraz"
+
+#: lib/regcomp.c:180
+#, fuzzy
+msgid "Unmatched ) or \\)"
+msgstr "Neuparena `{'"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Nedostaje prethodni regularni izraz"
diff --git a/src/sed/po/hu.gmo b/src/sed/po/hu.gmo
new file mode 100644
index 0000000..6449940
--- /dev/null
+++ b/src/sed/po/hu.gmo
diff --git a/src/sed/po/hu.po b/src/sed/po/hu.po
new file mode 100644
index 0000000..7979521
--- /dev/null
+++ b/src/sed/po/hu.po
@@ -0,0 +1,446 @@
+# Hungarian translation of GNU sed
+# Copyright (C) 2002 Free Software Foundation, Inc.
+# Gábor István <stive@mezobereny.hu>, 2002.
+# Mihály Gyulai <gyulai@fbi.hu>, 2003.
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0.8\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2003-10-26 09:28+0100\n"
+"Last-Translator: Mihály Gyulai <gyulai@fbi.hu>\n"
+"Language-Team: Hungarian <translation-team-hu@lists.sourceforge.net>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-2\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Több `!'"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "Váratlan `,'"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "Nem lehet használni a +N-t vagy ~N-t elso címként"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "Nincs párban `{'"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "Nincs párban `}'"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Extra karakterek a parancs után "
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "`a', `c' vagy `i' parancs után \\ szükséges"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' nem igényel címzést"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": nem igényel címzést"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Megjegyzésben nem lehet címzés"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Hiányzó parancs"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "A parancs csak egy címzést használ"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Befejezetlen regex cím"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Befejezetlen `s' parancs"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Befejezetlen `y' parancs"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Ismeretlen `s' opció"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "többszörös `p' opció, `s' parancs mellett"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "többszörös `g' opció, `s' parancs mellett"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "többszörös szám opció, `s' parancs mellett"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "a(z) `s' parancs szám opciója nem lehet nulla"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "a(z) `y' parancs szövegeinek hossza különbözõ"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "a 'sed' program újabb verziójára van szükség"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "A parancs csak egy címzést használ"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Ismeretlen parancs:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: fájl %s sor %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e kifejezés #%lu, karakter %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Az ugráshoz (`%s') nem találom a címkét"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: nem lehet olvasni %s: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Nem lehet megnyitni a(z) %s fájlt: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Nem lehet megnyitni a(z) %s fájlt: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Nem lehet megnyitni az átmeneti fájlt: %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "hiba az alfolyamatban"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "az `e' opció nincs támogatva"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "az `e' parancs nincs támogatva"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Nincsen elõzõ reguláris kifejezés"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Nem lehet módosítót megadni üres reguláris kifejezéshez"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Hibás hivatkozás (\\%d) a(z) `s' parancs RHS-ére"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R --regexp-perl\n"
+"                Perl 5 reguláris kifejezés nyelvtanának használata.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R --regexp-perl\n"
+"                Perl 5 reguláris kifejezés nyelvtanának használata.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"A fordítási hibákat kérem a gyulai@fbi.hu címre küldeni. \n"
+"Angolul ide: %s . A levél Tárgy mezejében legyen ott a `%s' szó.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed verzió %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"A GNU 3.02.80-as sed verzión alapszik\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed verzió %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Ez egy ingyenes számítógépes program. A forrásban megtalálhatók a másolás "
+"feltételei.\n"
+"SEMMILYEN garanciát nem vállalunk, még azt sem állítjuk, hogy ez a program\n"
+"KERESKEDELMI CÉLOKRA ALKALMAS vagy HASZNÁLHATÓ EGY ADOTT FELADATRA.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: nem lehet olvasni %s: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Nem lehet megnyitni a(z) %s fájlt: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "nem tudom a(z) %d elemet ide írni %s: %s"
+msgstr[1] "nem tudom a(z) %d elemeket ide írni %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "olvasási hiba %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: nem lehet olvasni %s: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Sikeres"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Nincs találat"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Hibás reguláris kifejezés"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Érvénytelen összehasonlító karakter"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Érvénytelen karakterosztály-név"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Lezáró visszaperjel"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Érvénytelen vissza-hivatkozás"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "Nincs párban [ vagy [^"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "Nincs párban ( vagy \\("
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "Nincs párban \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "\\{\\}-nak érvénytelen a tartalma"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Sorozat érvénytelen vége"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Kevés a memória"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Érvénytelen megelõzõ reguláris kifejezés"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Reguláris kifejezés túl korai vége"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Túl nagy reguláris kifejezés"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Nincs párban ) vagy \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Nincsen elõzõ reguláris kifejezés"
diff --git a/src/sed/po/id.gmo b/src/sed/po/id.gmo
new file mode 100644
index 0000000..029d4b2
--- /dev/null
+++ b/src/sed/po/id.gmo
diff --git a/src/sed/po/id.po b/src/sed/po/id.po
new file mode 100644
index 0000000..352213e
--- /dev/null
+++ b/src/sed/po/id.po
@@ -0,0 +1,447 @@
+# translation of sed-4.0.9.id.po to Indonesian
+# sed 4.0.9 (Indonesian)
+# Copyright (C) 1999, 2000, 2001, 2003, 2004 Free Software Foundation, Inc.
+# Tedi Heriyanto <tedi_h@gmx.net>, 2002, 2003, 2004.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0.9\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2004-04-27 14:56+0700\n"
+"Last-Translator: Tedi Heriyanto <tedi_h@gmx.net>\n"
+"Language-Team: Indonesian <translation-team-id@lists.sourceforge.net>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+"X-Generator: KBabel 1.3\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "`!' ganda"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "`,' tidak diharapkan"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "Tidak dapat menggunakan +N atau ~N sebagai alamat pertama"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "`{' tidak sesuai"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "`}' tidak diharapkan"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Karakter tambahan setelah perintah"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "Diharapkan \\ setelah `a', `c' atau `i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' tidak menginginkan alamat"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": tidak menginginkan alamat"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Komentar tidak menerima alamat"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Perintah hilang"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Perintah hanya menggunakan satu alamat"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Alamat regex yang tidak selesai"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Perintah `s' tidak selesai"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Perintah `y' tidak selesai"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Opsion tidak dikenal bagi `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "opsion `p' ganda bagi perintah `s'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "opsion `g' ganda bagi perintah `s'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "opsion beragam untuk perintah `s'"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "opsion angka untuk perintah `s' tidak boleh nol"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "string untuk perintah y dalam panjang yang berbeda"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "mengharapkan versi baru sed"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Penggunaan modifier alamat yang tidak valid"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Perintah tidak dikenal:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: file %s baris %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e ekspresi #%lu, char %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Tidak dapat menemukan label untuk melompat ke `%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: tidak dapat membaca %s: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Tidak dapat membuka file %s %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Tidak dapat membuka file %s %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Tidak dapat membuka file temporer %s %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "kesalahan dalam subproses"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "option `e' tidak didukung"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "perintah `e' tidak didukung"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Tidak ada reguler ekspresi sebelumnya"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Tidak dapat menspesifikasikan modified pada regexp kosong"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Referensi tidak valid \\%d pada perintah `s' RHS"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 gunakan sintaks reguler ekspresi Perl 5 dalam skrip.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 gunakan sintaks reguler ekspresi Perl 5 dalam skrip.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Email laporan kesalahan ke: %s \n"
+"Pastikan untuk menyertakan kata \"%s\" di field \"Subject:\".\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed versi %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"berdasarkan pada GNU sed versi 3.02.80\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed versi %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: tidak dapat membaca %s: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Tidak dapat membuka file %s %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "tidak dapat menulis %d item ke %s: %s"
+msgstr[1] "tidak dapat menulis %d item ke %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "kesalahan pembacaan pada %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: tidak dapat membaca %s: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Sukses"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Tidak cocok"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Reguler ekspresi tidak valid"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Karakter kolasi tidak valid"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Nama kelas karakter tidak valid"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Trailing backslash"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Referensi balik tidak valid"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "[ atau [^ tidak sesuai"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "( atau \\( tidak sesuai"
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "\\{ tidak sesuai"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Isi \\{\\} tidak valid"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Akhir batas tidak valid"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Memori habis"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Reguler ekspresi sebelumnya tidak valid"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Akhir reguler ekspresi prematur"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Reguler ekspresi terlalu besar"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr ") atau \\) tidak sesuai"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Tidak ada reguler ekspresi sebelumnya"
diff --git a/src/sed/po/insert-header.sin b/src/sed/po/insert-header.sin
new file mode 100644
index 0000000..b26de01
--- /dev/null
+++ b/src/sed/po/insert-header.sin
@@ -0,0 +1,23 @@
+# Sed script that inserts the file called HEADER before the header entry.
+#
+# At each occurrence of a line starting with "msgid ", we execute the following
+# commands. At the first occurrence, insert the file. At the following
+# occurrences, do nothing. The distinction between the first and the following
+# occurrences is achieved by looking at the hold space.
+/^msgid /{
+x
+# Test if the hold space is empty.
+s/m/m/
+ta
+# Yes it was empty. First occurrence. Read the file.
+r HEADER
+# Output the file's contents by reading the next line. But don't lose the
+# current line while doing this.
+g
+N
+bb
+:a
+# The hold space was nonempty. Following occurrences. Do nothing.
+x
+:b
+}
diff --git a/src/sed/po/it.gmo b/src/sed/po/it.gmo
new file mode 100644
index 0000000..c5f3c71
--- /dev/null
+++ b/src/sed/po/it.gmo
diff --git a/src/sed/po/it.po b/src/sed/po/it.po
new file mode 100644
index 0000000..8f14913
--- /dev/null
+++ b/src/sed/po/it.po
@@ -0,0 +1,524 @@
+# traduzione di sed
+# Copyright (C) 1999 Free Software Foundation, Inc.
+# Paolo Bonzini <bonzini@gnu.org>, 2001
+# 
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0a\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2002-11-26 12:44+0100\n"
+"Last-Translator: Paolo Bonzini <bonzini@gnu.org>\n"
+"Language-Team: Italian <tp@lists.linux.it>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-1\n"
+"Content-Transfer-Encoding: 8-bit\n"
+"Plural-Forms: nplurals=2; plural=n != 1;\n"
+
+# sed/compile.c:166
+#: sed/compile.c:162
+msgid "multiple `!'s"
+msgstr "`!' multipli"
+
+# sed/compile.c:167
+#: sed/compile.c:163
+msgid "unexpected `,'"
+msgstr "`,' inattesa"
+
+# sed/compile.c:169
+#: sed/compile.c:164
+msgid "invalid usage of +N or ~N as first address"
+msgstr "impossibile usare +N o ~N come primo indirizzo"
+
+# sed/compile.c:170
+#: sed/compile.c:165
+msgid "unmatched `{'"
+msgstr "`{' non bilanciata"
+
+# sed/compile.c:171
+#: sed/compile.c:166
+msgid "unexpected `}'"
+msgstr "`}' inattesa"
+
+# sed/compile.c:172
+#: sed/compile.c:167
+msgid "extra characters after command"
+msgstr "ci sono altri caratteri dopo il comando"
+
+# sed/compile.c:173
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "atteso \\ dopo `a', `c' o `i'"
+
+# sed/compile.c:174
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' non accetta indirizzi"
+
+# sed/compile.c:175
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": non accetta indirizzi"
+
+# sed/compile.c:176
+#: sed/compile.c:171
+msgid "comments don't accept any addresses"
+msgstr "i commenti non accettano indirizzi"
+
+# sed/compile.c:177
+#: sed/compile.c:172
+msgid "missing command"
+msgstr "manca il comando"
+
+# sed/compile.c:178
+#: sed/compile.c:173
+msgid "command only uses one address"
+msgstr "il comando usa solo un indirizzo"
+
+# sed/compile.c:179
+#: sed/compile.c:174
+msgid "unterminated address regex"
+msgstr "espressione regolare non terminata nell'indirizzo"
+
+# sed/compile.c:180
+#: sed/compile.c:175
+msgid "unterminated `s' command"
+msgstr "comando `s' non terminato"
+
+# sed/compile.c:181
+#: sed/compile.c:176
+msgid "unterminated `y' command"
+msgstr "comando `y' non terminato"
+
+# sed/compile.c:182
+#: sed/compile.c:177
+msgid "unknown option to `s'"
+msgstr "opzione di `s' sconosciuta"
+
+# sed/compile.c:183
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "opzioni `p' multiple al comando `s'"
+
+# sed/compile.c:184
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "opzioni `g' multiple al comando `s'"
+
+# sed/compile.c:186
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "opzioni numeriche multiple al comando `s'"
+
+# sed/compile.c:188
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "l'opzione numerica del comando `s' non può essere zero"
+
+# sed/compile.c:190
+#: sed/compile.c:182
+msgid "strings for `y' command are different lengths"
+msgstr "le stringhe per il comandi `y' hanno lunghezze diverse"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr "il carattere delimitatore è multi-byte"
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "attesa una versione piu' recente di sed"
+
+# sed/compile.c:178
+#: sed/compile.c:185
+msgid "invalid usage of line address 0"
+msgstr "utilizzo non valido dell'indirizzo 0"
+
+# sed/compile.c:1319
+#: sed/compile.c:186
+#, c-format
+msgid "unknown command: `%c'"
+msgstr "comando sconosciuto: `%c'"
+
+# sed/compile.c:1340
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: file %s riga %lu: %s\n"
+
+# sed/compile.c:1343
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: espressione -e #%lu, carattere %lu: %s\n"
+
+# sed/compile.c:1543
+#: sed/compile.c:1644
+#, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "impossibile trovare un'etichetta per il salto a `%s'"
+
+# sed/execute.c:516
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: impossibile leggere %s: %s\n"
+
+# sed/execute.c:675
+#: sed/execute.c:673
+#, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "impossibile modificare %s: è un terminale"
+
+#: sed/execute.c:677
+#, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "impossibile modificare %s: non è un file normale"
+
+# lib/utils.c:131
+#: sed/execute.c:684 lib/utils.c:196
+#, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "impossibile aprire il file temporaneo %s: %s"
+
+# sed/execute.c:1003 sed/execute.c:1183
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "errore in un sottoprocesso"
+
+# sed/execute.c:1005
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "opzione `e' non supportata"
+
+# sed/execute.c:1185
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "comando `e' non supportato"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr "nessun file in ingresso"
+
+# lib/regcomp.c:658 sed/regex.c:47
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr "occorre un'espressione regolare precedente"
+
+# sed/regex.c:48
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr "non è possibile specificare dei modificatori per l'espressione vuota"
+
+# sed/regex.c:146
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "riferimento non valido \\%d nel secondo membro del comando `s'"
+
+# sed/sed.c:98
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 usa la sintassi Perl 5 per le espressioni regolari\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+"Utilizzo: %s [OPZIONE]... {script-se-nessun-altro-specificato} [input-"
+"file]...\n"
+"\n"
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+"  -n, --quiet, --silent\n"
+"                 sopprime la stampa automatica del pattern space\n"
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+"  -e script, --expression=script\n"
+"                 aggiunge lo script ai comandi da eseguire\n"
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+"  -f script-file, --file=file-script\n"
+"                 aggiunge il contenuto di file-script ai comandi da "
+"eseguire\n"
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 scrive il risultato sul file originale (facendo una copia\n"
+"                 se è fornita un'estensione)\n"
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+"  -l N, --line-length=N\n"
+"                 specifica la lunghezza delle linee generate dal comando "
+"`l'\n"
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+"  --posix\n"
+"                 disabilita tutte le estensioni GNU.\n"
+
+# sed/sed.c:98
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -r, --regexp-extended\n"
+"                 usa la sintassi di `egrep' per le espressioni regolari\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+"  -s, --separate\n"
+"                 considera i file di input come separati invece che come un\n"
+"                 unico file lungo.\n"
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+"  -u, --unbuffered\n"
+"                 carica e visualizza i dati una a pezzetti piu' piccoli\n"
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr "      --help     mostra questo aiuto ed esce\n"
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr "      --version  stampa le informazioni sulla versione ed esce\n"
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+"\n"
+"Se non è usata nessuna delle opzioni -e, --expression, -f o --file allora "
+"il\n"
+"primo argomento che non è una opzione sarà usato come lo script sed da\n"
+"interpretare. Tutti gli argomenti rimanenti sono nomi di file di input; se "
+"non\n"
+"sono specificati file di input sarà letto lo standard input.\n"
+"\n"
+
+# sed/sed.c:132
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Segnalare eventuali bug a: %s .\n"
+"Assicurarsi di includere la parola ``%s'' nell'oggetto del messaggio.\n"
+
+# sed/sed.c:255
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed versione %s\n"
+
+# sed/sed.c:256
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"basato su GNU sed versione %s\n"
+"\n"
+
+# sed/sed.c:258
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed versione %s\n"
+
+# sed/sed.c:260
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Questo è software libero; si veda il sorgente per le condizioni di "
+"copiatura.\n"
+"NON c'è garanzia; neppure di COMMERCIABILITA' o IDONEITA' AD UN PARTICOLARE\n"
+"SCOPO, nei limiti permessi dalla legge.\n"
+
+# sed/execute.c:516
+#: lib/utils.c:98 lib/utils.c:336
+#, c-format
+msgid "cannot remove %s: %s"
+msgstr "impossibile rimuovere %s: %s"
+
+# lib/utils.c:131
+#: lib/utils.c:143
+#, c-format
+msgid "couldn't open file %s: %s"
+msgstr "impossibile aprire il file %s: %s"
+
+# lib/utils.c:161
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "Impossibile scrivere %d elemento su %s: %s"
+msgstr[1] "Impossibile scrivere %d elementi su %s: %s"
+
+# lib/utils.c:176
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "errore di lettura su %s: %s"
+
+# sed/execute.c:516
+#: lib/utils.c:341
+#, c-format
+msgid "cannot rename %s: %s"
+msgstr "impossibile rinominare %s: %s"
+
+# lib/regcomp.c:179
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Successo"
+
+# lib/regcomp.c:182
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Nessuna corrispondenza trovata"
+
+# lib/regcomp.c:185
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Espressione regolare non valida"
+
+# lib/regcomp.c:188
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Carattere di ordinamento non valido"
+
+# lib/regcomp.c:191
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Nome non valido per una classe di caratteri"
+
+# lib/regcomp.c:194
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Barra rovesciata alla fine dell'espressione regolare"
+
+# lib/regcomp.c:197
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Riferimento non valido"
+
+# lib/regcomp.c:200
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "`[' non bilanciata"
+
+# lib/regcomp.c:203
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "`(' o `\\(' non bilanciata"
+
+# lib/regcomp.c:206
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "`\\{' non bilanciata"
+
+# lib/regcomp.c:209
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "numero di ripetizioni specificato tra graffe non valido"
+
+# lib/regcomp.c:212
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Fine dell'intervallo non valida"
+
+# lib/regcomp.c:215
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Memoria esaurita"
+
+# lib/regcomp.c:218
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Espressione regolare precedente non valida"
+
+# lib/regcomp.c:221
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Fine prematura dell'espressione regolare"
+
+# lib/regcomp.c:224
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Espressione regolare troppo grande"
+
+# lib/regcomp.c:227
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "`)' o `\\)' non bilanciata"
+
+# lib/regcomp.c:658 sed/regex.c:47
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Occorre un'espressione regolare precedente"
diff --git a/src/sed/po/ja.gmo b/src/sed/po/ja.gmo
new file mode 100644
index 0000000..a63137d
--- /dev/null
+++ b/src/sed/po/ja.gmo
diff --git a/src/sed/po/ja.po b/src/sed/po/ja.po
new file mode 100644
index 0000000..c25e257
--- /dev/null
+++ b/src/sed/po/ja.po
@@ -0,0 +1,464 @@
+# Japanese messages for GNU sed
+# Copyright (C) 1999, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+# IIDA Yosiaki <iida@gnu.org>, 1999, 2002, 2003, 2004, 2005.
+# This file is distributed under the same license as the GNU sed package.
+# Contributed by
+# Yasuyuki Furukawa <yasu@on.cs.keio.ac.jp>, 1999.
+# and taken over on 1999-09-24 by Japanese Team.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU sed 4.1.1\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2005-02-01 21:02+0900\n"
+"Last-Translator: IIDA Yosiaki <iida@gnu.org>\n"
+"Language-Team: Japanese <translation-team-ja@lists.sourceforge.net>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=EUC-JP\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+
+#: sed/compile.c:162
+msgid "multiple `!'s"
+msgstr "Ê£¿ô¤Î¡Ö!¡×¤Ç¤¹"
+
+#: sed/compile.c:163
+msgid "unexpected `,'"
+msgstr "ͽ´ü¤»¤Ì¡Ö,¡×¤Ç¤¹"
+
+#: sed/compile.c:164
+msgid "invalid usage of +N or ~N as first address"
+msgstr "ºÇ½é¤Î¥¢¥É¥ì¥¹¤Ø¤Î+N¤ä~N¤Î»ØÄê¤Ï̵¸ú¤Ç¤¹"
+
+#: sed/compile.c:165
+msgid "unmatched `{'"
+msgstr "Äà¤ê¹ç¤ï¤Ê¤¤¡Ö{¡×¤Ç¤¹"
+
+#: sed/compile.c:166
+msgid "unexpected `}'"
+msgstr "ͽ´ü¤»¤Ì¡Ö}¡×¤Ç¤¹"
+
+#: sed/compile.c:167
+msgid "extra characters after command"
+msgstr "¥³¥Þ¥ó¥É¤Î¸å¤í¤Ë;·×¤Êʸ»ú¤¬¤¢¤ê¤Þ¤¹"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "\\¤¬¡Öa¡×¡Öc¡×¡Öi¡×¤Î¸å¤Ëͽ´ü¤µ¤ì¤Þ¤¹"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "¡Ö}¡×¤Ë¥¢¥É¥ì¥¹¤ÏÉÔÍפǤ¹"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ":¤Ë¥¢¥É¥ì¥¹¤ÏÉÔÍפǤ¹"
+
+#: sed/compile.c:171
+msgid "comments don't accept any addresses"
+msgstr "¥³¥á¥ó¥È¤Ï¥¢¥É¥ì¥¹¤ò¼õ¤±ÉÕ¤±¤Þ¤»¤ó"
+
+#: sed/compile.c:172
+msgid "missing command"
+msgstr "¥³¥Þ¥ó¥É¤¬Â­¤ê¤Þ¤»¤ó"
+
+#: sed/compile.c:173
+msgid "command only uses one address"
+msgstr "¥³¥Þ¥ó¥É¤Ï¥¢¥É¥ì¥¹¤ò1¤Ä¤À¤±»È¤¤¤Þ¤¹"
+
+#: sed/compile.c:174
+msgid "unterminated address regex"
+msgstr "¥¢¥É¥ì¥¹regex¤¬½ªÎ»¤·¤Æ¤¤¤Þ¤»¤ó"
+
+#: sed/compile.c:175
+msgid "unterminated `s' command"
+msgstr "¡Ös¡×¥³¥Þ¥ó¥É¤¬½ªÎ»¤·¤Æ¤¤¤Þ¤»¤ó"
+
+#: sed/compile.c:176
+msgid "unterminated `y' command"
+msgstr "¡Öy¡×¥³¥Þ¥ó¥É¤¬½ªÎ»¤·¤Æ¤¤¤Þ¤»¤ó"
+
+#: sed/compile.c:177
+msgid "unknown option to `s'"
+msgstr "¡Ös¡×¤Ø¤Î¥ª¥×¥·¥ç¥ó¤¬Ì¤ÃΤǤ¹"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "¡Ös¡×¥³¥Þ¥ó¥É¤ËÊ£¿ô¤Î¡Öp¡×¥ª¥×¥·¥ç¥ó"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "¡Ös¡×¥³¥Þ¥ó¥É¤ËÊ£¿ô¤Î¡Ög¡×¥ª¥×¥·¥ç¥ó"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "¡Ös¡×¥³¥Þ¥ó¥É¤ËÊ£¿ô¤Î¿ôÃÍ¥ª¥×¥·¥ç¥ó"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "¡Ös¡×¥³¥Þ¥ó¥É¤Ø¤Î¿ôÃÍ¥ª¥×¥·¥ç¥ó¤ÏÎí¤Ç¤Ï¤¤¤±¤Þ¤»¤ó"
+
+#: sed/compile.c:182
+msgid "strings for `y' command are different lengths"
+msgstr "¡Öy¡×¥³¥Þ¥ó¥É¤Ø¤Îʸ»úÎó¤ÎŤµ¤¬¡¢°ã¤¤¤Þ¤¹"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr "¶èÀÚ¤êʸ»ú¤¬¡¢Ã±°ì¥Ð¥¤¥Èʸ»ú¤Ç¤¢¤ê¤Þ¤»¤ó"
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "sed¤Î¿·ÈǤ¬Á°Äó¤Ç¤¹"
+
+#: sed/compile.c:185
+msgid "invalid usage of line address 0"
+msgstr "̵¸ú¤Ê¹Ô¥¢¥É¥ì¥¹0¤Î»ÈÍÑË¡"
+
+#: sed/compile.c:186
+#, c-format
+msgid "unknown command: `%c'"
+msgstr "̤ÃΤΥ³¥Þ¥ó¥É¤Ç¤¹: ¡Ö%c¡×"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: ¥Õ¥¡¥¤¥ë %s %lu¹Ô: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e ɽ¸½ #%lu, ʸ»ú¿ô %lu: %s\n"
+
+#: sed/compile.c:1644
+#, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "¡Ö%s¡×¤Ø¤Î¥¸¥ã¥ó¥×¤Î¥é¥Ù¥ë¤¬¸«¤Ä¤«¤ê¤Þ¤»¤ó"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: %s¤òÆɤ߹þ¤á¤Þ¤»¤ó: %s\n"
+
+#: sed/execute.c:673
+#, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "%s¤Ï¡¢ÊÔ½¸¤Ç¤­¤Þ¤»¤ó¤Ç¤·¤¿: üËö¤Ç¤¹"
+
+#: sed/execute.c:677
+#, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "%s¤Ï¡¢ÊÔ½¸¤Ç¤­¤Þ¤»¤ó¤Ç¤·¤¿: Ä̾ï¥Õ¥¡¥¤¥ë¤Ç¤¢¤ê¤Þ¤»¤ó"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "°ì»þ¥Õ¥¡¥¤¥ë¤ò³«¤±¤Þ¤»¤ó¤Ç¤·¤¿: %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "»Ò¥×¥í¥»¥¹¤Î¥¨¥é¡¼"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "¡Öe¡×¥ª¥×¥·¥ç¥ó¤Ï¡¢¥µ¥Ý¡¼¥È¤µ¤ì¤Æ¤¤¤Þ¤»¤ó"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "¡Öe¡×¥³¥Þ¥ó¥É¤Ï¡¢¥µ¥Ý¡¼¥È¤µ¤ì¤Æ¤¤¤Þ¤»¤ó"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr "ľÁ°¤ÎÀµµ¬É½¸½¤¬¡¢¤¢¤ê¤Þ¤»¤ó"
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr "½¤¾þ»Ò¤Ï¡¢¶õ¤ÎÀµµ¬É½¸½¤Ë»ØÄê¤Ç¤­¤Þ¤»¤ó"
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "¡Ös¡×¥³¥Þ¥ó¥É¤Î±¦Â¦¤Ë̵¸ú¤Ê\\%d¤Î»²¾È"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 ¥¹¥¯¥ê¥×¥È¤ÇPerl 5¤ÎÀµµ¬É½¸½¹½Ê¸¤ò»È¤¦¡£\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+"»ÈÍÑË¡: %s [¥ª¥×¥·¥ç¥ó]... {¥¹¥¯¥ê¥×¥È(¾¤Ë¤Ê¤±¤ì¤Ð)} [ÆþÎÏ¥Õ¥¡¥¤¥ë]...\n"
+"\n"
+
+#: sed/sed.c:102
+#, fuzzy, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+"-n, --quiet, --silent\n"
+"                 ¥Ñ¥¿¡¼¥ó¡¦¥¹¥Ú¡¼¥¹¤Î¼«Æ°½ÐÎϤòÍÞÀ©\n"
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+"  -e ¥¹¥¯¥ê¥×¥È, --expression=¥¹¥¯¥ê¥×¥È\n"
+"                 ¼Â¹Ô¤¹¤ë¥³¥Þ¥ó¥É¤È¤·¤Æ¥¹¥¯¥ê¥×¥È¤òÄɲÃ\n"
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+"  -f ¥¹¥¯¥ê¥×¥È¡¦¥Õ¥¡¥¤¥ë, --file=¥¹¥¯¥ê¥×¥È¡¦¥Õ¥¡¥¤¥ë\n"
+"                 ¼Â¹Ô¤¹¤ë¥³¥Þ¥ó¥É¤È¤·¤Æ¥¹¥¯¥ê¥×¥È¡¦¥Õ¥¡¥¤¥ë¤ÎÆâÍƤòÄɲÃ\n"
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+"  -i[ÀÜÈø¼­], --in-place[=ÀÜÈø¼­]\n"
+"                 ¥Õ¥¡¥¤¥ë¤ò¤½¤Î¾ì¤ÇÊÔ½¸ (³ÈÄ¥»Ò¤¬¤¢¤ì¤Ð¡¢¥Ð¥Ã¥¯¥¢¥Ã¥×¤òºî"
+"À®)\n"
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+"  -l N, --line-length=N\n"
+"                 ¡Öl¡×¥³¥Þ¥ó¥ÉÍѤιÔÀÞÊÖ¤·Ä¹¤ò»ØÄê\n"
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+"  --posix\n"
+"                 GNU³ÈÄ¥¤òÁ´Éô¶Ø»ß¡£\n"
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -r, --regexp-extended\n"
+"                 ¥¹¥¯¥ê¥×¥È¤Ç³ÈÄ¥Àµµ¬É½¸½¤ò»ÈÍÑ¡£\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+"  -s, --separate\n"
+"                 ¥Õ¥¡¥¤¥ë¤ò°ìÏ¢¤ÎÆþÎϤˤ»¤º¡¢ÊÌ¡¹¤Ë½èÍý¡£\n"
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+"  -u, --unbuffered\n"
+"                 ÆþÎÏ¥Õ¥¡¥¤¥ë¤«¤é¶Ë¾®¤Î¥Ç¡¼¥¿¤ò¼è¤ê¹þ¤ß¡¢\n"
+"                 ¤Á¤ç¤¯¤Á¤ç¤¯½ÐÎϥХåե¡¡¼¤ËÁݽФ·\n"
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr "      --help     ¤³¤ÎÀâÌÀ¤òɽ¼¨¤·¤Æ½ªÎ»\n"
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr "      --version  ¥Ð¡¼¥¸¥ç¥ó¾ðÊó¤òɽ¼¨¤·¤Æ½ªÎ»\n"
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+"\n"
+"-e¡¢--expression¡¢-f¡¢--file¥ª¥×¥·¥ç¥ó¤Î¤É¤ì¤â¤Ê¤¤¤È¡¢¥ª¥×¥·¥ç¥ó°Ê³°¤Î\n"
+"ºÇ½é¤Î°ú¿ô¤òsed¥¹¥¯¥ê¥×¥È¤È¤·¤Æ²ò¼á¤·¤Þ¤¹¡£»Ä¤ê¤Î°ú¿ô¤ÏÁ´Éô¡¢ÆþÎÏ¥Õ¥¡\n"
+"¥¤¥ë̾¤È¤Ê¤ê¤Þ¤¹¡£ÆþÎÏ¥Õ¥¡¥¤¥ë¤Î»ØÄ꤬¤Ê¤¤¤È¡¢É¸½àÆþÎϤòÆɤ߹þ¤ß¤Þ¤¹¡£\n"
+"\n"
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"ÅŻҥ᡼¥ë¤Ë¤è¤ë¥Ð¥°Êó¹ð¤Î°¸Àè: %s\n"
+"Êó¹ð¤ÎºÝ¡¢¡ÈSubject:¡É¥Õ¥£¡¼¥ë¥É¤Î¤É¤³¤«¤Ë¡È%s¡É¤òÆþ¤ì¤Æ¤¯¤À¤µ¤¤¡£\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed %sÈÇ\n"
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"¸¶ºîGNU sed %sÈÇ\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr ""
+"GNU sed %sÈÇ\n"
+"\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+"\n"
+"ÌõÃí: Èó¾ï¤Ë½ÅÍפÊʸ¾Ï¤Î¤¿¤á¡¢¸¶Ê¸¤ò»Ä¤·¤Æ¤¤¤Þ¤¹¡£\n"
+"  -- »²¹ÍÌõ\n"
+"¤³¤ì¤Ï¥Õ¥ê¡¼¡¦¥½¥Õ¥È¥¦¥§¥¢¤Ç¤¹¡£Ê£À½¤Î¾ò·ï¤Ë´Ø¤·¤Æ¤Ï¡¢¥½¡¼¥¹¤ò¤´Í÷¤¯¤À¤µ\n"
+"¤¤¡£ÊݾڤϰìÀÚ¤¢¤ê¤Þ¤»¤ó¡£±ÄÍøÌÜŪ¤äË¡¤ÇÄê¤á¤é¤ì¤¿ÈϰϤǤÎÆÃÄêÌÜŪ¤Î¤¿¤á\n"
+"¤ÎŬ¹çÀ­¤â¤¢¤ê¤Þ¤»¤ó¡£\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s¤òºï½ü¤Ç¤­¤Þ¤»¤ó: %s"
+
+#: lib/utils.c:143
+#, c-format
+msgid "couldn't open file %s: %s"
+msgstr "¥Õ¥¡¥¤¥ë%s¤ò³«¤±¤Þ¤»¤ó¤Ç¤·¤¿: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "%d¸Ä¤Î¥¢¥¤¥Æ¥à¤ò%s¤Ø½ñ¤­¹þ¤á¤Þ¤»¤ó¤Ç¤·¤¿: %s"
+msgstr[1] "%d¸Ä¤Î¥¢¥¤¥Æ¥à¤ò%s¤Ø½ñ¤­¹þ¤á¤Þ¤»¤ó¤Ç¤·¤¿: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "%s¤ÎÆɹþ¤ß¥¨¥é¡¼: %s"
+
+#: lib/utils.c:341
+#, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s¤Î̾Á°¤òÊѹ¹¤Ç¤­¤Þ¤»¤ó: %s"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "À®¸ù"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "¾È¹ç¤·¤Þ¤»¤ó"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "̵¸ú¤ÊÀµµ¬É½¸½"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "̵¸ú¤Ê¹»¹çʸ»ú"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "̵¸ú¤Êʸ»ú¥¯¥é¥¹Ì¾"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "¸å³¤ÎµÕ¥¹¥é¥Ã¥·¥å"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "̵¸ú¤ÊµÕ»²¾È"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "[¤ä[^¤¬Äà¹ç¤¤¤Þ¤»¤ó"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "(¤ä\\(¤¬Äà¹ç¤¤¤Þ¤»¤ó"
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "\\{¤¬Äà¹ç¤¤¤Þ¤»¤ó"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "̵¸ú¤Ê\\{\\}¤ÎÆâÍÆ\""
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "̵¸ú¤ÊÈϰϤνªÃ¼"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "¥á¥â¥ê¡¼¤¬Â­¤ê¤Þ¤»¤ó"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "̵¸ú¤ÊÀè¹ÔÀµµ¬É½¸½"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Áá²á¤®¤ëÀµµ¬É½¸½½ªÃ¼"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Â礭²á¤®¤ëÀµµ¬É½¸½"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Äà¤ê¹ç¤ï¤Ê¤¤)¤ä\\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "ľÁ°¤ÎÀµµ¬É½¸½¤¬¡¢¤¢¤ê¤Þ¤»¤ó"
diff --git a/src/sed/po/ko.gmo b/src/sed/po/ko.gmo
new file mode 100644
index 0000000..ab9d29b
--- /dev/null
+++ b/src/sed/po/ko.gmo
diff --git a/src/sed/po/ko.po b/src/sed/po/ko.po
new file mode 100644
index 0000000..5d9d46a
--- /dev/null
+++ b/src/sed/po/ko.po
@@ -0,0 +1,439 @@
+# ko.po -- Korean messages for GNU sed
+# Copyright (C) 2001 Free Software Foundation, Inc.
+# Jong-Hoon Ryu <redhat4u@netian.com>, 2001.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU sed 3.02.80\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2001-10-12 17:26+0900\n"
+"Last-Translator: Jong-Hoon Ryu <redhat4u@netian.com>\n"
+"Language-Team: Korean <ko@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=EUC-KR\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "`!' °¡ Áߺ¹µÇ¾ú½À´Ï´Ù"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "ºÒÇÊ¿äÇÑ `,' °¡ »ç¿ëµÇ°í ÀÖ½À´Ï´Ù"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "ù¹ø° ÁÖ¼Ò·Î '+N' ¶Ç´Â '~N' À» »ç¿ëÇÒ ¼ö ¾ø½À´Ï´Ù"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "`{' °¡ ÀÏÄ¡ÇÏÁö ¾Ê½À´Ï´Ù"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "ºÒÇÊ¿äÇÑ `}' °¡ »ç¿ëµÇ°í ÀÖ½À´Ï´Ù"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "¸í·ÉµÚ¿¡ ÇÊ¿ä¾ø´Â ¹®ÀÚµéÀÌ ÀÖ½À´Ï´Ù"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr ""
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' ¿¡ ¾î¶°ÇÑ ÁÖ¼Òµµ ÇÊ¿äÄ¡ ¾Ê½À´Ï´Ù"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": ¿¡ ¾î¶°ÇÑ ÁÖ¼Òµµ ÇÊ¿äÄ¡ ¾Ê½À´Ï´Ù"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "ÄÚ¸àÆ®¿¡ ¾î¶°ÇÑ ÁÖ¼Òµµ »ç¿ëÇÒ ¼ö ¾ø½À´Ï´Ù"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "¸í·ÉÀÌ ÁöÁ¤µÇÁö ¾Ê¾Ò½À´Ï´Ù"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "¸í·É¿¡ ÇϳªÀÇ ÁÖ¼Ò¸¸ »ç¿ëÇÒ ¼ö ÀÖ½À´Ï´Ù"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "ÁÖ¼Ò Á¤±ÔÇ¥Çö½Ä Á¾·áµÇÁö ¾Ê¾Ò½À´Ï´Ù"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "`s' ¸í·ÉÀÌ Á¾·áµÇÁö ¾Ê¾Ò½À´Ï´Ù"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "`y' ¸í·ÉÀÌ Á¾·áµÇÁö ¾Ê¾Ò½À´Ï´Ù"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "`s' ¿¡ ¾Ë ¼ö ¾ø´Â ¿É¼ÇÀÌ ÀÖ½À´Ï´Ù"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "`s' ¸í·É¿¡ `p' ¿É¼ÇÀÌ Áߺ¹µÇ¾î ÀÖ½À´Ï´Ù"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "`s' ¸í·É¿¡ `g' ¿É¼ÇÀÌ Áߺ¹µÇ¾î ÀÖ½À´Ï´Ù"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "`s' ¸í·É¿¡ ¼ýÀÚ ¿É¼ÇÀÌ Áߺ¹µÇ¾î ÀÖ½À´Ï´Ù"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "`s' ¸í·ÉÀÇ ¼ýÀÚ ¿É¼Ç¿¡ '0' À» ÁöÁ¤ÇÒ ¼ö ¾ø½À´Ï´Ù"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "`y' ¸í·ÉÀÇ ¹®ÀÚ¿­ÀÌ ±æÀÌ°¡ ´Ù¸¨´Ï´Ù"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr ""
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "ÁÖ¼Ò º¯°æÀÚ(modifier)ÀÇ »ç¿ëÀÌ ¿Ã¹Ù¸£Áö ¾Ê½À´Ï´Ù"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "¾Ë ¼ö ¾ø´Â ¸í·É:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: %s ÆÄÀÏÀÇ %lu ¹ø° ÁÙ: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e expression #%lu, char %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "`%s' (À¸)·Î Á¡ÇÁÇÒ ·¹À̺íÀ» ãÀ» ¼ö ¾ø½À´Ï´Ù"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: %s (À»)¸¦ ÀÐÀ» ¼ö ¾øÀ½: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "%s ÆÄÀÏÀ» ¿­ ¼ö ¾ø½À´Ï´Ù"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "%s ÆÄÀÏÀ» ¿­ ¼ö ¾ø½À´Ï´Ù"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "%s ÆÄÀÏÀ» ¿­ ¼ö ¾ø½À´Ï´Ù"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr ""
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr ""
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr ""
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr ""
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr ""
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr ""
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"¹ö±×¸¦ º¸°íÇÒ E-mail ÁÖ¼Ò: %s .\n"
+"``Subject:'' Ç׸ñ¿¡ ¹Ýµå½Ã ``%s'' ´Ü¾î¸¦ Æ÷ÇÔÇØ Áֽñ⠹ٶø´Ï´Ù.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"ÀÌ ÇÁ·Î±×·¥Àº ÀÚÀ¯ ¼ÒÇÁÆ®¿þ¾î ÀÔ´Ï´Ù; ÀÚ¼¼ÇÑ ³»¿ëÀº ÀúÀÛ±Ç ³»¿ëÀÇ ¿ø¹®À»\n"
+"Âü°íÇϽñ⠹ٶø´Ï´Ù.  ÀÌ ÇÁ·Î±×·¥Àº ¹ý¿¡ ÀúÃ˵ÇÁö ¾Ê´Â ¹üÀ§¿¡¼­ »ó¾÷ÀûÀ̳ª\n"
+"Ư¼ö ¸ñÀûÀ¸·Î »ç¿ëµÉ °æ¿ì¸¦ Æ÷ÇÔÇÑ ¾î¶°ÇÑ °æ¿ì¿¡µµ º¸ÁõÇÏÁö ¾Ê½À´Ï´Ù.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: %s (À»)¸¦ ÀÐÀ» ¼ö ¾øÀ½: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "%s ÆÄÀÏÀ» ¿­ ¼ö ¾ø½À´Ï´Ù"
+
+#: lib/utils.c:220
+#, fuzzy, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "%2$s ¿¡ %1$d Ç׸ñ(item)À» ±â·ÏÇÒ ¼ö ¾ø½À´Ï´Ù: %3$s"
+msgstr[1] "%2$s ¿¡ %1$d Ç׸ñ(item)À» ±â·ÏÇÒ ¼ö ¾ø½À´Ï´Ù: %3$s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "%s ÀÇ ³»¿ë Àб⠿À·ù: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: %s (À»)¸¦ ÀÐÀ» ¼ö ¾øÀ½: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:153
+#, fuzzy
+msgid "Unmatched [ or [^"
+msgstr "`{' °¡ ÀÏÄ¡ÇÏÁö ¾Ê½À´Ï´Ù"
+
+#: lib/regcomp.c:156
+#, fuzzy
+msgid "Unmatched ( or \\("
+msgstr "`{' °¡ ÀÏÄ¡ÇÏÁö ¾Ê½À´Ï´Ù"
+
+#: lib/regcomp.c:159
+#, fuzzy
+msgid "Unmatched \\{"
+msgstr "`{' °¡ ÀÏÄ¡ÇÏÁö ¾Ê½À´Ï´Ù"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr ""
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:180
+#, fuzzy
+msgid "Unmatched ) or \\)"
+msgstr "`{' °¡ ÀÏÄ¡ÇÏÁö ¾Ê½À´Ï´Ù"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr ""
diff --git a/src/sed/po/nl.gmo b/src/sed/po/nl.gmo
new file mode 100644
index 0000000..ccf3397
--- /dev/null
+++ b/src/sed/po/nl.gmo
diff --git a/src/sed/po/nl.po b/src/sed/po/nl.po
new file mode 100644
index 0000000..ad08f5d
--- /dev/null
+++ b/src/sed/po/nl.po
@@ -0,0 +1,541 @@
+# Dutch translation of sed.
+# Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+# This file is distributed under the same license as the sed package.
+# Taco Witte <tcwitte@cs.uu.nl>, 2004, 2005.
+# 
+# 
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.1.1\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2005-04-12 20:09+0200\n"
+"Last-Translator: Taco Witte <tcwitte@cs.uu.nl>\n"
+"Language-Team: Dutch <vertaling@vrijschrift.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=n != 1;\n"
+
+#: sed/compile.c:162
+msgid "multiple `!'s"
+msgstr "meerdere `!'s"
+
+#: sed/compile.c:163
+msgid "unexpected `,'"
+msgstr "onverwachte `,'"
+
+#: sed/compile.c:164
+msgid "invalid usage of +N or ~N as first address"
+msgstr "ongeldig gebruik van +N of ~N als eerste adres"
+
+#: sed/compile.c:165
+msgid "unmatched `{'"
+msgstr "ongepaarde `{'"
+
+#: sed/compile.c:166
+msgid "unexpected `}'"
+msgstr "onverwachte `}'"
+
+#: sed/compile.c:167
+msgid "extra characters after command"
+msgstr "extra tekens na opdracht"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "verwachtte \\ na `a', `c' of `i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' wil geen adressen"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": wil geen adressen"
+
+#: sed/compile.c:171
+msgid "comments don't accept any addresses"
+msgstr "opmerkingen accepteren geen adres"
+
+#: sed/compile.c:172
+msgid "missing command"
+msgstr "ontbrekende opdracht"
+
+#: sed/compile.c:173
+msgid "command only uses one address"
+msgstr "opdracht gebruikt slechts één adres"
+
+#: sed/compile.c:174
+msgid "unterminated address regex"
+msgstr "onafgemaakte reguliere expressie voor adres"
+
+#: sed/compile.c:175
+msgid "unterminated `s' command"
+msgstr "onafgemaakte `s'-opdracht"
+
+#: sed/compile.c:176
+msgid "unterminated `y' command"
+msgstr "onafgemaakte `y'-opdracht"
+
+#: sed/compile.c:177
+msgid "unknown option to `s'"
+msgstr "onbekende optie voor `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "meerdere `p'-opties voor `s'-opdracht"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "meerdere `g'-opties voor `s'-opdracht"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "meerdere getalopties voor `s'-opdracht"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "getaloptie voor `s'-opdracht mag niet nul zijn"
+
+#: sed/compile.c:182
+msgid "strings for `y' command are different lengths"
+msgstr "tekenreeksen voor `y'-opdracht zijn van verschillende lengte"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr "scheidingsteken is geen enkel-byte-teken"
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "verwachtte een nieuwere versie van sed"
+
+#: sed/compile.c:185
+msgid "invalid usage of line address 0"
+msgstr "ongeldig gebruik van regel-adres 0"
+
+#: sed/compile.c:186
+#, c-format
+msgid "unknown command: `%c'"
+msgstr "onbekende opdracht: `%c'"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: bestand %s regel %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e expressie #%lu, teken %lu: %s\n"
+
+#: sed/compile.c:1644
+#, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "kan label voor sprong naar `%s' niet vinden"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: kan %s niet lezen: %s\n"
+
+#: sed/execute.c:673
+#, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "kon %s niet bewerken: is een terminal"
+
+#: sed/execute.c:677
+#, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "kon %s niet bewerken: geen gewoon bestand"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "kon tijdelijk bestand %s niet openen: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "fout in deelproces"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "optie `e' wordt niet ondersteund"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "`e'-opdracht wordt niet ondersteund"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr "geen eerdere reguliere expressie"
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr "kan geen veranderaars opgeven bij een lege reguliere expressie"
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "ongeldige verwijzing \\%d op rechterhandzijde van `s'-opdracht"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 de syntaxis van Perl 5 voor reguliere expressie gebruiken "
+"in het script.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+"Gebruik: %s [OPTIE]... {script-alleen-als-geen-ander-script} "
+"[invoerbestand]...\n"
+"\n"
+
+#: sed/sed.c:102
+#, fuzzy, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+"-n, --quiet, --silent\n"
+"                 automatische weergave van patroonruimte onderdrukken\n"
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+"  -e script, --expression=SCRIPT\n"
+"                 het SCRIPT toevoegen aan uit te voeren opdrachten\n"
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+"  -f script-file, --file=SCRIPTBESTAND\n"
+"                 de inhoud van SCRIPTBESTAND toevoegen aan uit te voeren "
+"opdrachten\n"
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+"  -i[ACHTERVOEGSEL], --in-place[=ACHTERVOEGSEL]\n"
+"                 bestanden ter plekke bewerken (maakt reservekopie als "
+"extensie gegeven)\n"
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+"  -l AANTAL, --line-length=AANTAL\n"
+"                 gewenste regelafbreeklengte opgeven voor `l'-opdracht\n"
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+"  --posix\n"
+"                 alle GNU-uitbreidingen uit zetten.\n"
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -r, --regexp-extended\n"
+"                 uitgebreide reguliere expressies gebruiken in het script.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+"  -s, --separate\n"
+"                 bestanden als losstaand beschouwen i.p.v. als enkele "
+"continue stroom.\n"
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+"  -u, --unbuffered\n"
+"                 minimale hoeveelheid gegevens laden uit invoerbestanden en\n"
+"                 uitvoerbuffers vaker leegmaken\n"
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr "      --help     deze hulp weergeven en afsluiten\n"
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr "      --version  versie-informatie weergeven en afsluiten\n"
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+"\n"
+"Als geen -e, --expression, -f of --file optie gegeven is, wordt het\n"
+"eerste niet-optie argument genomen als het te interpreteren sed-script.\n"
+"Alle overblijvende argumenten zijn namen van invoerbestanden; als geen\n"
+"invoerbestanden opgegeven zijn, wordt standaardinvoer gelezen.\n"
+"\n"
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Stuur foutrapporten naar: %s .\n"
+"Zorg ervoor dat het woord ``%s'' ergens in het ``Onderwerp:''-veld staat.\n"
+"Rapporteer fouten in de vertalingen bij <vertaling@vrijschrift.org>.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed versie %s\n"
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"gebaseerd op GNU sed versie %s\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed versie %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Dit is vrije software; zie de bron voor kopieervoorwaarden.  Er is GEEN\n"
+"garantie; zelfs niet voor VERHANDELBAARHEID of GESCHIKTHEID VOOR\n"
+"EEN BEPAALD DOEL, tot het uiterste dat door de wet wordt toegestaan.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, c-format
+msgid "cannot remove %s: %s"
+msgstr "kan %s niet verwijderen: %s"
+
+#: lib/utils.c:143
+#, c-format
+msgid "couldn't open file %s: %s"
+msgstr "kon bestand %s niet openen: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "kon niet %d item naar %s schrijven: %s"
+msgstr[1] "kon niet %d items naar %s schrijven: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "leesfout op %s: %s"
+
+#: lib/utils.c:341
+#, c-format
+msgid "cannot rename %s: %s"
+msgstr "kon %s niet hernoemen: %s"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Gelukt"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Geen overeenkomst"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Ongeldige reguliere expressie"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Ongeldig sorteerteken"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Ongeldige tekenklassenaam"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Backslash aan het einde"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Ongeldige terugverwijzing"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "Ongepaarde [ of [^"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "Ongepaarde ( of \\("
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "Ongepaarde \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Ongeldige inhoud van \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Ongeldig bereikeinde"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Onvoldoende geheugen"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Ongeldige voorafgaande reguliere expressie"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Voortijdig einde van reguliere expressie"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Reguliere expressie is te groot"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Ongepaarde ) of \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Geen eerdere reguliere expressie"
+
+#~ msgid "Called savchar() with unexpected pushback (%x)"
+#~ msgstr "savchar() aangeroepen met onverwachte pushback (%x)"
+
+#~ msgid "INTERNAL ERROR: bad address type"
+#~ msgstr "INTERNE FOUT: slechte adressoort"
+
+#~ msgid "INTERNAL ERROR: Bad cmd %c"
+#~ msgstr "INTERNE FOUT: Slechte opdracht %c"
+
+#~ msgid ""
+#~ "Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+#~ "\n"
+#~ "  -n, --quiet, --silent\n"
+#~ "                 suppress automatic printing of pattern space\n"
+#~ "  -e script, --expression=script\n"
+#~ "                 add the script to the commands to be executed\n"
+#~ "  -f script-file, --file=script-file\n"
+#~ "                 add the contents of script-file to the commands to be "
+#~ "executed\n"
+#~ "  -i[suffix], --in-place[=suffix]\n"
+#~ "                 edit files in place (makes backup if extension "
+#~ "supplied)\n"
+#~ "  -l N, --line-length=N\n"
+#~ "                 specify the desired line-wrap length for the `l' "
+#~ "command\n"
+#~ "  -r, --regexp-extended\n"
+#~ "                 use extended regular expressions in the script.\n"
+#~ "%s  -s, --separate\n"
+#~ "                 consider files as separate rather than as a single "
+#~ "continuous\n"
+#~ "                 long stream.\n"
+#~ "  -u, --unbuffered\n"
+#~ "                 load minimal amounts of data from the input files and "
+#~ "flush\n"
+#~ "                 the output buffers more often\n"
+#~ "      --help     display this help and exit\n"
+#~ "  -V, --version  output version information and exit\n"
+#~ "\n"
+#~ "If no -e, --expression, -f, or --file option is given, then the first\n"
+#~ "non-option argument is taken as the sed script to interpret.  All\n"
+#~ "remaining arguments are names of input files; if no input files are\n"
+#~ "specified, then the standard input is read.\n"
+#~ "\n"
+#~ msgstr ""
+#~ "Gebruik: %s [OPTIE]... {script-alleen-als-geen-ander-script} "
+#~ "[invoerbestand]...\n"
+#~ "\n"
+#~ "  -n, --quiet, --silent\n"
+#~ "                 automatische weergave van patroonruimte onderdrukken\n"
+#~ "  -e script, --expression=script\n"
+#~ "                 het script toevoegen aan de uit te voeren opdrachten\n"
+#~ "  -f scriptbestand, --file=scriptbestand\n"
+#~ "                 de inhoud van scriptbestand toevoegen aan de uit te "
+#~ "voeren opdrachten\n"
+#~ "  -i[achtervoegsel], --in-place[=achtervoegsel]\n"
+#~ "                 bestanden ter plekke bewerken (maakt reservekopie als "
+#~ "achtervoegsel is opgegeven)\n"
+#~ "  -l N, --line-length=N\n"
+#~ "                 de gewenste afkaplengte voor regels opgeven voor de `l'-"
+#~ "opdracht\n"
+#~ "  -r, --regexp-extended\n"
+#~ "                 uitgebreide reguliere uitdrukkingen gebruiken in het "
+#~ "script.\n"
+#~ "%s  -s, --separate\n"
+#~ "                 bestanden afzonderlijk beschouwen in plaats van als één "
+#~ "continue, lange stroom.\n"
+#~ "  -u, --unbuffered\n"
+#~ "                 minimale hoeveelheden gegevens van invoerbestanden laden "
+#~ "en vaker de uitvoerbuffers legen\n"
+#~ "      --help     deze hulp weergeven en afsluiten\n"
+#~ "  -V, --version  versie-informatie weergeven en afsluiten\n"
+#~ "\n"
+#~ "Als geen -e, --expression, -f of --file optie gegeven is, wordt het "
+#~ "eerste niet-optie\n"
+#~ "argument gebruikt als sed script om te interpreteren.  Alle overblijvende "
+#~ "argumenten\n"
+#~ "zijn namen van invoerbestanden; als geen invoerbestanden zijn opgegeven, "
+#~ "wordt gelezen\n"
+#~ "vanaf standaard invoer.\n"
+#~ "\n"
diff --git a/src/sed/po/pl.gmo b/src/sed/po/pl.gmo
new file mode 100644
index 0000000..7d0697b
--- /dev/null
+++ b/src/sed/po/pl.gmo
diff --git a/src/sed/po/pl.po b/src/sed/po/pl.po
new file mode 100644
index 0000000..47cff40
--- /dev/null
+++ b/src/sed/po/pl.po
@@ -0,0 +1,462 @@
+# Polish translations for GNU sed package.
+# Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+# Wojciech Polak <polak@gnu.org>, 2003, 2004.
+# corrections: Jakub Bogusz <qboosh@pld-linux.org>, 2003.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.1.1\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2004-07-08 19:58+0200\n"
+"Last-Translator: Wojciech Polak <polak@gnu.org>\n"
+"Language-Team: Polish <translation-team-pl@lists.sourceforge.net>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-2\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=3; plural=(n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 "
+"|| n%100>=20) ? 1 : 2);\n"
+
+#: sed/compile.c:162
+msgid "multiple `!'s"
+msgstr "wielokrotny znak `!'"
+
+#: sed/compile.c:163
+msgid "unexpected `,'"
+msgstr "nieoczekiwany znak `,'"
+
+#: sed/compile.c:164
+msgid "invalid usage of +N or ~N as first address"
+msgstr "nieprawid³owe u¿ycie +N lub ~N jako pierwszego adresu"
+
+#: sed/compile.c:165
+msgid "unmatched `{'"
+msgstr "niedopasowany znak `{'"
+
+#: sed/compile.c:166
+msgid "unexpected `}'"
+msgstr "nieoczekiwany znak `}'"
+
+#: sed/compile.c:167
+msgid "extra characters after command"
+msgstr "dodatkowe znaki po poleceniu"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "oczekiwano znaku \\ po `a', `c' lub `i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' nie chce ¿adnych adresów"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": nie chce ¿adnych adresów"
+
+#: sed/compile.c:171
+msgid "comments don't accept any addresses"
+msgstr "komentarze nie akceptuj± ¿adnych adresów"
+
+#: sed/compile.c:172
+msgid "missing command"
+msgstr "brakuje polecenia"
+
+#: sed/compile.c:173
+msgid "command only uses one address"
+msgstr "polecenie u¿ywa tylko jednego adresu"
+
+#: sed/compile.c:174
+msgid "unterminated address regex"
+msgstr "niezakoñczony adres wyra¿enia regularnego"
+
+#: sed/compile.c:175
+msgid "unterminated `s' command"
+msgstr "niezakoñczone polecenie `s'"
+
+#: sed/compile.c:176
+msgid "unterminated `y' command"
+msgstr "niezakoñczone polecenie `y'"
+
+#: sed/compile.c:177
+msgid "unknown option to `s'"
+msgstr "nieznana opcja dla polecenia `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "wielokrotne opcje `p' dla polecenia `s'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "wielokrotne opcje `g' dla polecenia `s'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "wielokrotne opcje liczbowe dla polecenia `s'"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "opcja liczbowa dla polecenia `s' nie mo¿e byæ zerem"
+
+#: sed/compile.c:182
+msgid "strings for `y' command are different lengths"
+msgstr "³añcuchy dla polecenia `y' s± ró¿nych d³ugo¶ci"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr "znak ogranicznika nie jest pojedynczym znakiem-bajtem"
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "oczekiwano nowszej wersji programu sed"
+
+#: sed/compile.c:185
+msgid "invalid usage of line address 0"
+msgstr "nieprawid³owe u¿ycie adresu linii 0"
+
+#: sed/compile.c:186
+#, c-format
+msgid "unknown command: `%c'"
+msgstr "nieznane polecenie: `%c'"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: plik %s linia %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e wyra¿enie #%lu, znak %lu: %s\n"
+
+#: sed/compile.c:1644
+#, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "nie mo¿na znale¼æ etykiety dla skoku do `%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: nie mo¿na odczytaæ %s: %s\n"
+
+#: sed/execute.c:673
+#, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "nie mo¿na edytowaæ %s: plik jest terminalem"
+
+#: sed/execute.c:677
+#, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "nie mo¿na edytowaæ %s: to nie jest regularny plik"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "nie mo¿na otworzyæ tymczasowego pliku %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "b³±d w podprocesie"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "opcja `e' nie jest wspierana"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "polecenie `e' nie jest wspierane"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr "brak poprzedniego wyra¿enia regularnego"
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr "nie mo¿na wyszczególniæ modyfikatorów w pustym wyra¿eniu regularnym"
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "nieprawid³owe odwo³anie \\%d po prawej stronie polecenia `s'"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 u¿ywa w skrypcie wyra¿enia regularne zgodne ze sk³adni± "
+"Perl 5.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+"U¿ycie: %s [OPCJE] {skrypt-tylko-wtedy-gdy-¿aden-inny-skrypt} [plik-"
+"wej¶ciowy]...\n"
+"\n"
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+"  -n, --quiet, --silent\n"
+"                 powstrzymuje automatyczne drukowanie przetwarzanych linii.\n"
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+"  -e skrypt, --expression=skrypt\n"
+"                 dodaje skrypt do poleceñ, które maj± byæ wykonane.\n"
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+"  -f plik-skryptowy, --file=plik-skryptowy\n"
+"                 dodaje zawarto¶æ pliku skryptowego do poleceñ,\n"
+"                 które maj± byæ wykonane.\n"
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+"  -i[rozszerzenie], --in-place[=rozszerzenie]\n"
+"                 edytuje pliki \"w miejscu\" (tworzy kopie zapasowe\n"
+"                 je¿eli zosta³o podane rozszerzenie).\n"
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+"  -l N, --line-length=N\n"
+"                 ustala po¿±dan± d³ugo¶æ ³amanych linii dla polecenia `l'.\n"
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+"      --posix\n"
+"                 wy³±cza wszystkie rozszerzenia GNU.\n"
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -r, --regexp-extended\n"
+"                 u¿ywa w skrypcie rozszerzonych wyra¿eñ regularnych.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+"  -s, --separate\n"
+"                 traktuje pliki jako oddzielne, a nie jako pojedynczy,\n"
+"                 d³ugi i ci±g³y strumieñ.\n"
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+"  -u, --unbuffered\n"
+"                 ³aduje minimaln± ilo¶æ danych z plików wej¶ciowych\n"
+"                 i czê¶ciej oczyszcza bufor wyj¶ciowy.\n"
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr "      --help     wy¶wietla tê oto pomoc i koñczy pracê.\n"
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr "      --version  wy¶wietla numer wersji i koñczy pracê.\n"
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+"\n"
+"Je¿eli nie zostan± podane opcje -e, --expression, -f, lub --file,\n"
+"to wtedy pierwszy argument, który nie jest opcj± linii poleceñ sed,\n"
+"zostanie wziêty jako skrypt sed do przetworzenia. Wszystkie pozosta³e\n"
+"argumenty s± nazwami plików wej¶ciowych; je¿eli nie zostan± podane\n"
+"¿adne pliki wej¶ciowe, to wtedy odczytane zostanie standardowe wej¶cie.\n"
+"\n"
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Ewentualne b³êdy prosimy zg³aszaæ na adres: %s\n"
+"W tym celu proszê dodaæ s³owo ``%s'' do tematu listu.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed wersja %s\n"
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"na podstawie wersji GNU sed %s\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed wersja %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Niniejszy program jest wolnym oprogramowaniem; warunki kopiowania s± "
+"opisane\n"
+"w ¼ród³ach. Autorzy nie daj± ¯ADNYCH gwarancji, w tym równie¿ gwarancji\n"
+"PRZYDATNO¦CI DO SPRZEDA¯Y LUB DO KONKRETNYCH CELÓW.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, c-format
+msgid "cannot remove %s: %s"
+msgstr "nie mo¿na usun±æ %s: %s"
+
+#: lib/utils.c:143
+#, c-format
+msgid "couldn't open file %s: %s"
+msgstr "nie mo¿na otworzyæ pliku %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "nie mo¿na zapisaæ %d elementu do %s: %s"
+msgstr[1] "nie mo¿na zapisaæ %d elementów do %s: %s"
+msgstr[2] "nie mo¿na zapisaæ %d elementów do %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "b³±d odczytu w %s: %s"
+
+#: lib/utils.c:341
+#, c-format
+msgid "cannot rename %s: %s"
+msgstr "nie mo¿na zmieniæ nazwy %s: %s"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Sukces"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Brak dopasowania"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Nieprawid³owe wyra¿enie regularne"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Nieprawid³owy znak porównania"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Nieprawid³owa nazwa klasy znaku"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Koñcowy znak backslash"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Nieprawid³owe odwo³anie wsteczne"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "Niedopasowany znak [ lub [^"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "Niedopasowany znak ( lub \\("
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "Niedopasowany znak \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Nieprawid³owa zawarto¶æ \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Nieprawid³owy koniec zakresu"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Pamiêæ wyczerpana"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Nieprawid³owe poprzedzaj±ce wyra¿enie regularne"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Przedwczesny koniec wyra¿enia regularnego"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Wyra¿enie regularne jest zbyt du¿e"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Niedopasowany znak ) lub \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Brak poprzedniego wyra¿enia regularnego"
diff --git a/src/sed/po/pt_BR.gmo b/src/sed/po/pt_BR.gmo
new file mode 100644
index 0000000..b854303
--- /dev/null
+++ b/src/sed/po/pt_BR.gmo
diff --git a/src/sed/po/pt_BR.po b/src/sed/po/pt_BR.po
new file mode 100644
index 0000000..1890f95
--- /dev/null
+++ b/src/sed/po/pt_BR.po
@@ -0,0 +1,448 @@
+# traduções para o português do Brasil das mensagens de erro do sed
+# Copyright (C) 1999 Free Software Foundation, Inc.
+#   Aurélio Marinho Jargas <aurelio@conectiva.com.br>, 1999, 2002.
+#
+# Tradução original da versão 4.01:
+#   Juan Carlos Castro y Castro <jcastro@vialink.com.br>, 2002.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0.1\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2002-11-08 17:44-0300\n"
+"Last-Translator: Aurélio Marinho Jargas <aurelio@verde666.org>\n"
+"Language-Team: Brazilian Portuguese <ldp-br@bazar.conectiva.com.br>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=iso-8859-1\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n > 1);\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Exclamações `!' múltiplas"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "Vírgula `,' inesperada"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "Não use +N ou ~N como o primeiro endereço"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "`{' não terminada"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "`}' inesperada"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Há caracteres sobrando após o comando"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "Deve haver um escape \\ depois dos comandos `a', `c' e `i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' não recebe endereços"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr "`:' não recebe endereços"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Comentários não aceitam endereços"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Falta especificar um comando ao endereço"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Este comando usa apenas um endereço"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "A expressão regular do endereço está inacabada (falta a /)"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Comando `s' inacabado (s/// - faltou delimitador)"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Comando `y' inacabado (y/// - faltou delimitador)"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Opção desconhecida para o comando `s' (s///?)"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "opções `p' múltiplas para o comando `s'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "opções `g' múltiplas para o comando `s'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "opções numéricas múltiplas para o comando `s' (s///n)"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "A opção numérica para o comando `s' não pode ser zero (s///0)"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "Os textos para o comando `y' têm tamanhos diferentes (y/abc/z/)"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr ""
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Uso incorreto do modificador de endereço"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Comando desconhecido:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: arquivo %s linha %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e expressão #%lu, caractere %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Não foi possível encontrar a marcação `%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: não foi possível ler %s: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Não foi possível abrir o arquivo %s: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Não foi possível abrir o arquivo %s: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Não foi possível abrir o arquivo %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "erro no subprocesso"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "opção `e' não suportada"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "comando `e' não suportado"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Não há expressão regular anterior"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Não é permitido especificar modificadores numa expressão regular vazia"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Referência inválida \\%d na segunda parte do comando `s'"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 usar sintaxe de expressões regulares do Perl 5 no script.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 usar sintaxe de expressões regulares do Perl 5 no script.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Envie relatórios de erros (em inglês) para: %s .\n"
+"Inclua a palavra ``%s'' no campo ``Assunto:'' ou ``Subject:''.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed versão %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"baseado no GNU sed versão 3.02.80\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed versão %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Este programa é Software Livre. Veja os fontes para conhecer as condições\n"
+"de cópia.  NÃO há garantias, nem mesmo para os aspectos mercantis ou de\n"
+"atendimento a finalidades específicas, tanto quanto a lei permita.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: não foi possível ler %s: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Não foi possível abrir o arquivo %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "não foi possível escrever %d item para %s: %s"
+msgstr[1] "não foi possível escrever %d items para %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "erro de leitura em %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: não foi possível ler %s: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Sucesso"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Nada encontrado"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Expressão regular inválida"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Caractere de ordenação inválido"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Nome inválido de classe de caracteres"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Escape \\ no final"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Retrovisor \\n inválido"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "[ ou [^ não terminado"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "( ou \\( não terminado"
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "\\{ não terminado"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Conteúdo inválido no \\{\\} (permitidos números e vírgula)"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Fim de intervalo (range) inválido"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Falta de memória"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Expressão regular anterior inválida"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Fim prematuro da expressão regular"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Expressão regular grande demais"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr ") or \\) inesperado"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Não há expressão regular anterior"
diff --git a/src/sed/po/quot.sed b/src/sed/po/quot.sed
new file mode 100644
index 0000000..0122c46
--- /dev/null
+++ b/src/sed/po/quot.sed
@@ -0,0 +1,6 @@
+s/"\([^"]*\)"/“\1�/g
+s/`\([^`']*\)'/‘\1’/g
+s/ '\([^`']*\)' / ‘\1’ /g
+s/ '\([^`']*\)'$/ ‘\1’/g
+s/^'\([^`']*\)' /‘\1’ /g
+s/“�/""/g
diff --git a/src/sed/po/ro.gmo b/src/sed/po/ro.gmo
new file mode 100644
index 0000000..978ef97
--- /dev/null
+++ b/src/sed/po/ro.gmo
diff --git a/src/sed/po/ro.po b/src/sed/po/ro.po
new file mode 100644
index 0000000..5ecbbb6
--- /dev/null
+++ b/src/sed/po/ro.po
@@ -0,0 +1,450 @@
+# Mesajele în limba românã pentru sed.
+# Copyright (C) 2003 Free Software Foundation, Inc.
+# Acest fiºier este distribuit sub aceeaºi licenþã ca ºi pachetul sed.
+# Laurentiu Buzdugan <buzdugan@voyager.net>, 2003.
+#
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0.8\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2003-11-22 12:00-0500\n"
+"Last-Translator: Laurentiu Buzdugan <buzdugan@voyager.net>\n"
+"Language-Team: Romanian <translation-team-ro@lists.sourceforge.net>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-2\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "`!'-uri multiple"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "`,' neaºteptat"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "Nu se poate folosi +N ºi ~N ca prima adresã"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "`{' fãrã pereche"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "`}' neaºteptat"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Extra caractere dupã comandã"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "Este aºteptat \\ dupã `a', `c' sau `i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' nu vrea nici o adresã"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": nu vrea nici o adresã"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Comentariile nu acceptã nici o adresã"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Comandã absentã"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Comanda foloseºte numai o adresã"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Adresã regex neterminatã"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Comandã `s' neterminatã"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Comandã `y' neterminatã"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Opþiune necunoscutã pentru `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "multiple opþiuni `p' pentru comanda `s'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "multiple opþiuni `g' pentru comanda `s'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "numãr multiplu de opþiuni pentru comanda `s'"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "numãrul de opþiuni pentru comanda `s' nu poate fi zero"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "ºirurile pentru comanda y au lungimi diferite"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "am aºteptat o versiune mai recentã de sed"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Comanda foloseºte numai o adresã"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Comandã necunoscutã:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: fiºierul %s linia %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e expresia #%lu, caracterul %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Nu pot gãsi eticheta pentru saltul la `%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: nu pot citi %s: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Nu am putut deschide fiºierul %s: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Nu am putut deschide fiºierul %s: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Nu am putut deschide fiºierul temporar %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "eroare în subproces"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "opþiunea `e' nu e suportatã"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "comanda `e' nu e suportatã"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Nici o expresie regularã anterioarã"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Nu se pot specifica modificatori pentru regexp vidã"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Referinþã invalidã \\%d pentru RHS-ul comanzii `s'"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                foloseºte sintaxa expresiilor regulare din Perl 5 în "
+"script.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                foloseºte sintaxa expresiilor regulare din Perl 5 în "
+"script.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Raportaþi bug-uri prin e-mail la: %s .\n"
+"Fiþi siguri cã includeþi ``%s'' undeva în câmpul ``Subject:''.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "versiunea super-sed %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"bazat pe GNU sed versiunea 3.02.80\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed versiunea %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Acesta este software liber; vedeþi codul sursã pentru condiþiile de "
+"copiere.\n"
+"Nu existã NICI o garanþie; nici mãcar pentru VANDABILITATE sau POTRIVIRE \n"
+"PENTRU UN ANUME SCOP, conform legilor în vigoare.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: nu pot citi %s: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Nu am putut deschide fiºierul %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "Nu am putut scrie %d articol în %s: %s"
+msgstr[1] "Nu am putut scrie %d articole în %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "eroare citire pentru %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: nu pot citi %s: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Succes"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Nici o potrivire"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Expresie regularã incorectã"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Colaþiune de caractere incorectã"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Nume de clasã de caractere incorect"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Backslash în coadã"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Referinþã înapoi incorectã"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "[ sau [^ fãrã pereche"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "( sau \\( fãrã pereche"
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "\\{ fãrã pereche"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Conþinut incorect pentru \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Sfârºit de interval incorect"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Memorie epuizatã"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Expresie regularã precedentã incorectã"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Sfârºit prematur al expresiei regulare"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Expresie regularã prea mare"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr ") sau \\) fãrã pereche"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Nici o expresie regularã anterioarã"
diff --git a/src/sed/po/ru.gmo b/src/sed/po/ru.gmo
new file mode 100644
index 0000000..9268e28
--- /dev/null
+++ b/src/sed/po/ru.gmo
diff --git a/src/sed/po/ru.po b/src/sed/po/ru.po
new file mode 100644
index 0000000..21300ac
--- /dev/null
+++ b/src/sed/po/ru.po
@@ -0,0 +1,459 @@
+# Translation of sed-4.1.1.po to Russian
+# Copyright (C) 1998, 2004 Free Software Foundation, Inc.
+# Const Kaplinsky <const@ce.cctpu.edu.ru>, 1998.
+# Pavel Maryanov <acid_jack@ukr.net>, 2004.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed-4.1.1\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2004-07-07 17:54+0300\n"
+"Last-Translator: Pavel Maryanov <acid_jack@ukr.net>\n"
+"Language-Team: Russian <ru@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=KOI8-R\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=n>1;\n"
+"X-Generator: KBabel 1.3\n"
+
+#: sed/compile.c:162
+msgid "multiple `!'s"
+msgstr "ÎÅÓËÏÌØËÏ ÓÉÍ×ÏÌÏ× `!'"
+
+#: sed/compile.c:163
+msgid "unexpected `,'"
+msgstr "ÎÅÐÒÅÄ×ÉÄÅÎÎÙÊ ÓÉÍ×ÏÌ `,'"
+
+#: sed/compile.c:164
+msgid "invalid usage of +N or ~N as first address"
+msgstr "ÉÓÐÏÌØÚÏ×ÁÎÉÅ +N ÉÌÉ ~N × ËÁÞÅÓÔ×Å ÐÅÒ×ÏÇÏ ÁÄÒÅÓÁ ÎÅÄÏÐÕÓÔÉÍÏ"
+
+#: sed/compile.c:165
+msgid "unmatched `{'"
+msgstr "ÎÅÐÁÒÎÙÊ ÓÉÍ×ÏÌ `{'"
+
+#: sed/compile.c:166
+msgid "unexpected `}'"
+msgstr "ÎÅÐÒÅÄ×ÉÄÅÎÎÙÊ ÓÉÍ×ÏÌ `}'"
+
+#: sed/compile.c:167
+msgid "extra characters after command"
+msgstr "ÌÉÛÎÉÅ ÓÉÍ×ÏÌÙ ÐÏÓÌÅ ËÏÍÁÎÄÙ"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "ÏÖÉÄÁÌÁÓØ \\ ÐÏÓÌÅ `a', `c' ÉÌÉ `i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' ÎÅ ÄÏÐÕÓËÁÅÔ ÕËÁÚÁÎÉÑ ËÁËÉÈ-ÌÉÂÏ ÁÄÒÅÓÏ×"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr "`:' ÎÅ ÄÏÐÕÓËÁÅÔ ÕËÁÚÁÎÉÑ ËÁËÉÈ-ÌÉÂÏ ÁÄÒÅÓÏ×"
+
+#: sed/compile.c:171
+msgid "comments don't accept any addresses"
+msgstr "ËÏÍÍÅÎÔÁÒÉÉ ÎÅ ÄÏÐÕÓËÁÀÔ ÕËÁÚÁÎÉÑ ËÁËÉÈ-ÌÉÂÏ ÁÄÒÅÓÏ×"
+
+#: sed/compile.c:172
+msgid "missing command"
+msgstr "ÏÔÓÕÔÓÔ×ÕÅÔ ËÏÍÁÎÄÁ"
+
+#: sed/compile.c:173
+msgid "command only uses one address"
+msgstr "ËÏÍÁÎÄÁ ÉÓÐÏÌØÚÕÅÔ ÔÏÌØËÏ ÏÄÉÎ ÁÄÒÅÓ"
+
+#: sed/compile.c:174
+msgid "unterminated address regex"
+msgstr "ÎÅÚÁ×ÅÒÛÅÎÎÏÅ ÁÄÒÅÓÎÏÅ ÒÅÇÕÌÑÒÎÏÅ ×ÙÒÁÖÅÎÉÅ"
+
+#: sed/compile.c:175
+msgid "unterminated `s' command"
+msgstr "ÎÅÚÁ×ÅÒÛÅÎÎÁÑ ËÏÍÁÎÄÁ `s'"
+
+#: sed/compile.c:176
+msgid "unterminated `y' command"
+msgstr "ÎÅÚÁ×ÅÒÛÅÎÎÁÑ ËÏÍÁÎÄÁ `y'"
+
+#: sed/compile.c:177
+msgid "unknown option to `s'"
+msgstr "ÎÅÉÚ×ÅÓÔÎÙÊ ÍÏÄÉÆÉËÁÔÏÒ Ë `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "ÎÅÓËÏÌØËÏ ÍÏÄÉÆÉËÁÔÏÒÏ× `p' Ó ËÏÍÁÎÄÏÊ `s'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "ÎÅÓËÏÌØËÏ ÍÏÄÉÆÉËÁÔÏÒÏ× `g' Ó ËÏÍÁÎÄÏÊ `s'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "ÎÅÓËÏÌØËÏ ÞÉÓÌÏ×ÙÈ ÍÏÄÉÆÉËÁÔÏÒÏ× Ó ËÏÍÁÎÄÏÊ `s'"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "ÞÉÓÌÏ×ÏÊ ÍÏÄÉÆÉËÁÔÏÒ ÄÌÑ ËÏÍÁÎÄÙ `s' ÎÅ ÍÏÖÅÔ ÂÙÔØ ÎÕÌÅ×ÙÍ"
+
+#: sed/compile.c:182
+msgid "strings for `y' command are different lengths"
+msgstr "ÓÔÒÏËÉ ÄÌÑ ËÏÍÁÎÄÙ `y' ÉÍÅÀÔ ÒÁÚÎÕÀ ÄÌÉÎÕ"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr "ÓÉÍ×ÏÌ-ÒÁÚÄÅÌÉÔÅÌØ ÎÅ Ñ×ÌÑÅÔÓÑ ÏÄÎÏÂÁÊÔÏ×ÙÍ ÓÉÍ×ÏÌÏÍ"
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "ÏÖÉÄÁÌÁÓØ ÂÏÌÅÅ ÎÏ×ÁÑ ×ÅÒÓÉÑ sed"
+
+#: sed/compile.c:185
+msgid "invalid usage of line address 0"
+msgstr "ÎÅÄÏÐÕÓÔÉÍÏÅ ÉÓÐÏÌØÚÏ×ÁÎÉÅ ÓÔÒÏËÉ ÁÄÒÅÓÁ 0"
+
+#: sed/compile.c:186
+#, c-format
+msgid "unknown command: `%c'"
+msgstr "ÎÅÉÚ×ÅÓÔÎÁÑ ËÏÍÁÎÄÁ: `%c'"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: ÆÁÊÌ %s ÓÔÒÏËÁ %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e ×ÙÒÁÖÅÎÉÅ #%lu, ÓÉÍ×ÏÌ %lu: %s\n"
+
+#: sed/compile.c:1644
+#, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "ÎÅ×ÏÚÍÏÖÎÏ ÎÁÊÔÉ ÍÅÔËÕ ÄÌÑ ÐÅÒÅÈÏÄÁ Ë `%s'"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: ÎÅ×ÏÚÍÏÖÎÏ ÐÒÏÞÉÔÁÔØ %s: %s\n"
+
+#: sed/execute.c:673
+#, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "ÎÅ×ÏÚÍÏÖÎÏ ÒÅÄÁËÔÉÒÏ×ÁÔØ %s: ÜÔÏ ÔÅÒÍÉÎÁÌ"
+
+#: sed/execute.c:677
+#, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "ÎÅ×ÏÚÍÏÖÎÏ ÒÅÄÁËÔÉÒÏ×ÁÔØ %s: ÜÔÏ ÎÅ ÏÂÙÞÎÙÊ ÆÁÊÌ"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "ÎÅ×ÏÚÍÏÖÎÏ ÏÔËÒÙÔØ ×ÒÅÍÅÎÎÙÊ ÆÁÊÌ %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "ÏÛÉÂËÁ × ÐÏÄÐÒÏÃÅÓÓÅ"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "ÏÐÃÉÑ `e' ÎÅ ÐÏÄÄÅÒÖÉ×ÁÅÔÓÑ"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "ËÏÍÁÎÄÁ `e' ÎÅ ÐÏÄÄÅÒÖÉ×ÁÅÔÓÑ"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr "ÎÅÔ ÐÒÅÄÙÄÕÝÅÇÏ ÒÅÇÕÌÑÒÎÏÇÏ ×ÙÒÁÖÅÎÉÑ"
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr "ÎÅ×ÏÚÍÏÖÎÏ ÕËÁÚÁÔØ ÍÏÄÉÆÉËÁÔÏÒÙ × ÐÕÓÔÏÍ ÒÅÇÕÌÑÒÎÏÍ ×ÙÒÁÖÅÎÉÉ"
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "ÎÅÄÏÐÕÓÔÉÍÁÑ ÓÓÙÌËÁ \\%d ÎÁ RHS ËÏÍÁÎÄÙ `s'"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 ÉÓÐÏÌØÚÏ×ÁÎÉÅ × ÓËÒÉÐÔÅ ÓÉÎÔÁËÓÉÓÁ ÒÅÇÕÌÑÒÎÙÈ ×ÙÒÁÖÅÎÉÊ "
+"Perl 5.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+"éÓÐÏÌØÚÏ×ÁÎÉÅ: %s [ïðãéñ]... {ÔÏÌØËÏ-ÓËÒÉÐÔ-ÅÓÌÉ-ÎÅÔ-ÄÒÕÇÏÇÏ-ÓËÒÉÐÔÁ} "
+"[×ÈÏÄÎÏÊ-ÆÁÊÌ]...\n"
+"\n"
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+"  -n, --quiet, --silent\n"
+"                 ÐÏÄÁ×ÌÅÎÉÅ Á×ÔÏÍÁÔÉÞÅÓËÏÇÏ ×Ù×ÏÄÁ ÐÒÏÍÅÖÕÔËÏ×\n"
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+"  -e script, --expression=script\n"
+"                 ÄÏÂÁ×ÌÅÎÉÅ ÓËÒÉÐÔÁ × ÉÓÐÏÌÎÑÅÍÙÅ ËÏÍÁÎÄÙ\n"
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+"  -f script-file, --file=script-file\n"
+"                 ÄÏÂÁ×ÌÅÎÉÅ ÓÏÄÅÒÖÉÍÏÇÏ ÆÁÊÌÁ-ÓËÒÉÐÔÁ × ÉÓÐÏÌÎÑÅÍÙÅ ËÏÍÁÎÄÙ\n"
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+"  -i[óõææéëó], --in-place[=óõææéëó]\n"
+"                 ÒÅÄÁËÔÉÒÏ×ÁÎÉÅ ÆÁÊÌÏ× ÎÁ ÍÅÓÔÅ (ÓÏÚÄÁÅÔ ËÏÐÉÀ, ÅÓÌÉ ÕËÁÚÁÎÏ "
+"ÒÁÓÛÉÒÅÎÉÅ)\n"
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+"  -l N, --line-length=N\n"
+"                 ÕËÁÚÁÎÉÅ ÖÅÌÁÅÍÏÊ ÄÌÉÎÙ ÐÅÒÅÎÏÓÉÍÏÊ ÓÔÒÏËÉ ÄÌÑ ËÏÍÁÎÄÙ `l'\n"
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+"  --posix\n"
+"                 ÏÔËÌÀÞÅÎÉÅ ×ÓÅÈ ÒÁÓÛÉÒÅÎÉÊ GNU.\n"
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -r, --regexp-extended\n"
+"                 ÉÓÐÏÌØÚÏ×ÁÎÉÅ × ÓËÒÉÐÔÅ ÒÁÓÛÉÒÅÎÎÙÈ ÒÅÇÕÌÑÒÎÙÈ ×ÙÒÁÖÅÎÉÊ.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+"  -s, --separate\n"
+"                 ÄÏÐÕÝÅÎÉÅ, ÞÔÏ ÆÁÊÌÙ ÒÁÚÄÅÌÅÎÙ, Á ÎÅ × ×ÉÄÅ ÏÄÎÏÇÏ\n"
+"                 ÄÌÉÎÎÏÇÏ ÎÅÐÒÅÒÙ×ÎÏÇÏ ÐÏÔÏËÁ.\n"
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+"  -u, --unbuffered\n"
+"                 ÚÁÇÒÕÚËÁ ÍÉÎÉÍÁÌØÎÏÇÏ ÏÂßÅÍÁ ÄÁÎÎÙÈ ÉÚ ×ÈÏÄÎÙÈ ÆÁÊÌÏ×\n"
+"                 É ÂÏÌÅÅ ÞÁÓÔÙÊ ÓÂÒÏÓ ÎÁ ÄÉÓË ×ÙÈÏÄÎÙÈ ÂÕÆÅÒÏ×\n"
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr "      --help     ×Ù×ÏÄ ÜÔÏÊ ÓÐÒÁ×ËÉ É ×ÙÈÏÄ\n"
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr "      --version  ×Ù×ÏÄ ÉÎÆÏÒÍÁÃÉÉ Ï ×ÅÒÓÉÉ É ×ÙÈÏÄ\n"
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+"\n"
+"åÓÌÉ ÏÐÃÉÑ -e, --expression, -f, ÉÌÉ --file ÎÅ ÕËÁÚÁÎÁ, ÔÏÇÄÁ ÐÅÒ×ÙÊ\n"
+"ÎÅÏÐÃÉÏÎÁÌØÎÙÊ ÁÒÇÕÍÅÎÔ ÂÅÒÅÔÓÑ ËÁË ÓËÒÉÐÔ sed ÄÌÑ ÉÎÔÅÒÐÒÅÔÁÃÉÉ. ÷ÓÅ\n"
+"ÏÓÔÁ×ÛÉÅÓÑ ÁÒÇÕÍÅÎÔÙ Ñ×ÌÑÀÔÓÑ ÉÍÅÎÁÍÉ ×ÈÏÄÎÙÈ ÆÁÊÌÏ×; ÅÓÌÉ ×ÈÏÄÎÙÅ\n"
+"ÆÁÊÌÙ ÎÅ ÕËÁÚÁÎÙ, ÔÏÇÄÁ ÞÉÔÁÅÔÓÑ ÓÔÁÎÔÁÒÔÎÙÊ ××ÏÄ.\n"
+"\n"
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"ïÔÞÅÔÙ Ï ÏÛÉÂËÁÈ ÏÔÐÒÁ×ÌÑÊÔÅ ÐÏ ÁÄÒÅÓÕ: %s .\n"
+"õÂÅÄÉÔÅÓØ, ÞÔÏ ×ËÌÀÞÉÌÉ ÇÄÅ-ÌÉÂÏ × ÐÏÌÅ ``ôÅÍÁ:'' ÓÌÏ×Ï ``%s''.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed ×ÅÒÓÉÑ %s\n"
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"ÏÓÎÏ×ÁÎ ÎÁ GNU sed ×ÅÒÓÉÉ %s\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed ×ÅÒÓÉÑ %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"üÔÏ Ó×ÏÂÏÄÎÏÅ ÐÒÏÇÒÁÍÍÎÏÅ ÏÂÅÓÐÅÞÅÎÉÅ; ÕÓÌÏ×ÉÑ ÅÇÏ ËÏÐÉÒÏ×ÁÎÉÑ ÓÍÏÔÒÉÔÅ ×\n"
+"ÉÓÈÏÄÎÙÈ ÔÅËÓÔÁÈ. îÅ ÐÒÅÄÏÓÔÁ×ÌÑÅÔÓÑ îéëáëïê ÇÁÒÁÎÔÉÉ; ÄÁÖÅ ÇÁÒÁÎÔÉÉ\n"
+"ðòéçïäîïóôé äìñ ðòïäáöé ÉÌÉ ðòéíåîéíïóôé äìñ ëïîëòåôîïê ãåìé, × ÔÏÊ ÍÅÒÅ,\n"
+"× ËÏÔÏÒÏÊ ÜÔÏ ÍÏÖÅÔ ÂÙÔØ ÄÏÐÕÝÅÎÏ ÚÁËÏÎÏÄÁÔÅÌØÓÔ×ÏÍ.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, c-format
+msgid "cannot remove %s: %s"
+msgstr "ÎÅ×ÏÚÍÏÖÎÏ ÕÄÁÌÉÔØ %s: %s"
+
+#: lib/utils.c:143
+#, c-format
+msgid "couldn't open file %s: %s"
+msgstr "ÎÅ×ÏÚÍÏÖÎÏ ÏÔËÒÙÔØ ÆÁÊÌ %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "ÎÅ×ÏÚÍÏÖÎÏ ÚÁÐÉÓÁÔØ %d ÜÌÅÍÅÎÔ × %s: %s"
+msgstr[1] "ÎÅ×ÏÚÍÏÖÎÏ ÚÁÐÉÓÁÔØ %d ÜÌÅÍÅÎÔÏ× × %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "ÏÛÉÂËÁ ÞÔÅÎÉÑ %s: %s"
+
+#: lib/utils.c:341
+#, c-format
+msgid "cannot rename %s: %s"
+msgstr "ÎÅ×ÏÚÍÏÖÎÏ ÐÅÒÅÉÍÅÎÏ×ÁÔØ %s: %s"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "õÓÐÅÛÎÏ"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "îÅÔ ÓÏÏÔ×ÅÓÔ×ÉÑ"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "îÅÄÏÐÕÓÔÉÍÏÅ ÒÅÇÕÌÑÒÎÏÅ ×ÙÒÁÖÅÎÉÅ"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "îÅÄÏÐÕÓÔÉÍÙÊ ÓÉÍ×ÏÌ ÓÒÁ×ÎÅÎÉÑ"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "îÅÄÏÐÕÓÔÉÍÏÅ ÉÍÑ ÄÌÑ ËÌÁÓÓÁ ÓÉÍ×ÏÌÁ"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "úÁ×ÅÒÛÁÀÝÁÑ ÏÂÒÁÔÎÁÑ ËÏÓÁÑ ÞÅÒÔÁ"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "îÅÄÏÐÕÓÔÉÍÁÑ ÏÂÒÁÔÎÁÑ ÓÓÙÌËÁ"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "îÅÐÁÒÎÙÊ ÓÉÍ×ÏÌ [ ÉÌÉ [^"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "îÅÐÁÒÎÙÊ ÓÉÍ×ÏÌ ( or \\("
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "îÅÐÁÒÎÙÊ ÓÉÍ×ÏÌ \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "îÅÄÏÐÕÓÔÉÍÏÅ ÓÏÄÅÒÖÉÍÏÅ × \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "îÅÄÏÐÕÓÔÉÍÏÅ ÏËÏÎÞÁÎÉÅ ÄÉÁÐÁÚÏÎÁ"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "ðÁÍÑÔØ ÉÓÞÅÒÐÁÎÁ"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "îÅÄÏÐÕÓÔÉÍÏÅ ÐÒÅÄÛÅÓÔ×ÕÀÝÅÅ ÒÅÇÕÌÑÒÎÏÅ ×ÙÒÁÖÅÎÉÅ"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "ðÒÅÖÄÅ×ÒÅÍÅÎÎÏÅ ÏËÏÎÞÁÎÉÅ ÒÅÇÕÌÑÒÎÏÇÏ ×ÙÒÁÖÅÎÉÑ"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "òÅÇÕÌÑÒÎÏÅ ×ÙÒÁÖÅÎÉÅ ÓÌÉÛËÏÍ ÂÏÌØÛÏÅ"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "îÅÐÁÒÎÙÊ ÓÉÍ×ÏÌ ) ÉÌÉ \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "îÅÔ ÐÒÅÄÙÄÕÝÅÇÏ ÒÅÇÕÌÑÒÎÏÇÏ ×ÙÒÁÖÅÎÉÑ"
diff --git a/src/sed/po/sed.pot b/src/sed/po/sed.pot
new file mode 100644
index 0000000..dca524c
--- /dev/null
+++ b/src/sed/po/sed.pot
@@ -0,0 +1,417 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR Free Software Foundation, Inc.
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=INTEGER; plural=EXPRESSION;\n"
+
+#: sed/compile.c:162
+msgid "multiple `!'s"
+msgstr ""
+
+#: sed/compile.c:163
+msgid "unexpected `,'"
+msgstr ""
+
+#: sed/compile.c:164
+msgid "invalid usage of +N or ~N as first address"
+msgstr ""
+
+#: sed/compile.c:165
+msgid "unmatched `{'"
+msgstr ""
+
+#: sed/compile.c:166
+msgid "unexpected `}'"
+msgstr ""
+
+#: sed/compile.c:167
+msgid "extra characters after command"
+msgstr ""
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr ""
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr ""
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ""
+
+#: sed/compile.c:171
+msgid "comments don't accept any addresses"
+msgstr ""
+
+#: sed/compile.c:172
+msgid "missing command"
+msgstr ""
+
+#: sed/compile.c:173
+msgid "command only uses one address"
+msgstr ""
+
+#: sed/compile.c:174
+msgid "unterminated address regex"
+msgstr ""
+
+#: sed/compile.c:175
+msgid "unterminated `s' command"
+msgstr ""
+
+#: sed/compile.c:176
+msgid "unterminated `y' command"
+msgstr ""
+
+#: sed/compile.c:177
+msgid "unknown option to `s'"
+msgstr ""
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr ""
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr ""
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr ""
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr ""
+
+#: sed/compile.c:182
+msgid "strings for `y' command are different lengths"
+msgstr ""
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr ""
+
+#: sed/compile.c:185
+msgid "invalid usage of line address 0"
+msgstr ""
+
+#: sed/compile.c:186
+#, c-format
+msgid "unknown command: `%c'"
+msgstr ""
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr ""
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr ""
+
+#: sed/compile.c:1644
+#, c-format
+msgid "can't find label for jump to `%s'"
+msgstr ""
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr ""
+
+#: sed/execute.c:673
+#, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr ""
+
+#: sed/execute.c:677
+#, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr ""
+
+#: sed/execute.c:684 lib/utils.c:196
+#, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr ""
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr ""
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr ""
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr ""
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr ""
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr ""
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr ""
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+
+#: lib/utils.c:98 lib/utils.c:336
+#, c-format
+msgid "cannot remove %s: %s"
+msgstr ""
+
+#: lib/utils.c:143
+#, c-format
+msgid "couldn't open file %s: %s"
+msgstr ""
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] ""
+msgstr[1] ""
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr ""
+
+#: lib/utils.c:341
+#, c-format
+msgid "cannot rename %s: %s"
+msgstr ""
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr ""
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr ""
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr ""
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr ""
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr ""
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr ""
diff --git a/src/sed/po/sk.gmo b/src/sed/po/sk.gmo
new file mode 100644
index 0000000..07927ff
--- /dev/null
+++ b/src/sed/po/sk.gmo
diff --git a/src/sed/po/sk.po b/src/sed/po/sk.po
new file mode 100644
index 0000000..258f7f8
--- /dev/null
+++ b/src/sed/po/sk.po
@@ -0,0 +1,450 @@
+# Slovak translations for GNU sed package.
+# Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc.
+# Marcel Telka <marcel@telka.sk>, 2002, 2003.
+# Miroslav Vasko <vasko@debian.cz>, 1999.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: GNU sed 4.0.8\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2003-10-25 17:22+0200\n"
+"Last-Translator: Marcel Telka <marcel@telka.sk>\n"
+"Language-Team: Slovak <sk-i18n@lists.linux.sk>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=3; plural= (n==1) ? 1 : (n>=2 && n<=4) ? 2 : 0;\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Viacnásobný `!'"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "Neo�akávaná `,'"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "+N alebo ~N sa nedá použiť ako prvá adresa"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "Nezodpovedajúca `{'"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "Neo�akávaná `}'"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Nadbyto�né znaky po príkaze"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "O�akávané \\ po `a', `c' alebo `i'"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "`}' nevyžaduje akúkoľvek adresu"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": nechce akúkoľvek adresu"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "V komentári nie je prípustná akákoľvek adresa"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Chýbajúci príkaz"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Príkaz používa iba jednu adresu"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Neukon�ený regulárny výraz adresy"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Neukon�ený príkaz `s'"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Neukon�ený príkaz `y'"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Neznáma voľba pre `s'"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "viacnásobné použitie voľby `p' s príkazom `s'"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "viacnásobné použitie voľby `g' s príkazom `s'"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "príkaz `s' môže mať maximálne jednu �íselnú voľbu"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "�íselná voľba príkazu `s' nemôže byť nula"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "reťazce pre príkaz `y' majú rôzne dĺžky"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "o�akávaná novšia verzia programu sed"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Príkaz používa iba jednu adresu"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Neznámy príkaz:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: súbor %s, riadok %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e výraz #%lu, znak %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Návestie pre skok na `%s' nie je možné nájsť?"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: %s nie je možné �ítať: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Nebolo možné otvoriť súbor %s: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Nebolo možné otvoriť súbor %s: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Nebolo možné otvoriť do�asný súbor %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "chyba v podprocese"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "voľba `e' nie je podporovaná"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "príkaz `e' nie je podporovaný"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Bez predchádzajúceho regulárneho výrazu"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Nie je možné zadať modifikátory pre prázdny regulárny výraz"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Neplatný odkaz \\%d na `s' príkazu RHS"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 použiť syntax regulárnych výrazov z Perlu 5 v skripte.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 použiť syntax regulárnych výrazov z Perlu 5 v skripte.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Správy o chybách zasielajte na adresu %s (iba anglicky).\n"
+"Prosím vložte slovo ``%s'' niekde do položky ``Predmet:''\n"
+"Komentáre k slovenskému prekladu zasielajte na adresu <sk-i18n@lists.linux."
+"sk>.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed verzia %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"založené na GNU sed verzia 3.02.80\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed verzia %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Toto je voľné programové vybavenie; podmienky pre kopírovanie a "
+"rozširovanie\n"
+"nájdete v zdrojových textoch. Toto programové vybavenie je BEZ záruky,\n"
+"a to aj bez záruky PREDAJNOSTI alebo VHODNOSTI PRE NEJAK� KONKRÉTNY ÚČEL.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: %s nie je možné �ítať: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Nebolo možné otvoriť súbor %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "nebolo možné zapísať %d položiek do %s: %s"
+msgstr[1] "nebolo možné zapísať %d položku do %s: %s"
+msgstr[2] "nebolo možné zapísať %d položky do %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "chyba pri �ítaní z %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: %s nie je možné �ítať: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Úspech"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Nezodpovedá"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Neplatný regulárny výraz"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Neplatný znak pre porovnávanie"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Neplatný názov triedy znakov"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Ukon�ovacie opa�né lomítko"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Neplatný spätný odkaz"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "Nezodpovedajúca [ alebo [^"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "Nezodpovedajúca ( alebo \\("
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "Nezodpovedajúca \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Neplatný obsah \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Neplatný koniec rozsahu"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Vy�erpaná pamäť"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Neplatný predchádzajúci regulárny výraz"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Neo�akávaný koniec regulárneho výrazu"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Regulárny výraz je príliš veľký"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Nezodpovedajúca ) alebo \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Bez predchádzajúceho regulárneho výrazu"
diff --git a/src/sed/po/sl.gmo b/src/sed/po/sl.gmo
new file mode 100644
index 0000000..6721a74
--- /dev/null
+++ b/src/sed/po/sl.gmo
diff --git a/src/sed/po/sl.po b/src/sed/po/sl.po
new file mode 100644
index 0000000..00f5ba9
--- /dev/null
+++ b/src/sed/po/sl.po
@@ -0,0 +1,449 @@
+# -*- mode:po; coding:iso-latin-2;-*- Slovenian message catalogue for GNU sed.
+# Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+# Primo¾ Peterlin <primoz.peterlin@biofiz.mf.uni-lj.si>, 2000, 2001, 2002, 2003.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0.6\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2003-04-02 17:20+0200\n"
+"Last-Translator: Primo¾ Peterlin <primoz.peterlin@biofiz.mf.uni-lj.si>\n"
+"Language-Team: Slovenian <translation-team-sl@lists.sourceforge.net>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-2\n"
+"Content-Transfer-Encoding: 8-bit\n"
+"Plural-Forms: nplurals=4; plural=(n%100==1 ? 1 : n%100==2 ? 2 : n%100==3 || n"
+"%100==4 ? 3 : 0);\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Veèterni klicaji \"!\""
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "Neprièakovana vejica \",\""
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "Obliki +N in ~N nista dovoljeni kot zaèetna naslova"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "Oklepaj { brez zaklepaja"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "Neprièakovan zaklepaj }"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Ukazu sledijo dodatni znaki"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "Za ,a`, ,c` ali ,i` se prièakuje \\"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "Zaklepaj } ne zahteva naslova"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": ne zahteva naslova"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Komentarji ne sprejemajo naslovov"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Ukaz manjka"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Ukaz uporablja le en naslov"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Regularni izraz z nezakljuèenim naslovom"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Nezakljuèen ukaz \"s\""
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Nezakljuèen ukaz \"y\""
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "Neznane izbire pri ukazu \"s\""
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "veèterne izbire \"p\" pri ukazu \"s\""
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "veèterne izbire \"g\" pri ukazu \"s\""
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "veèterne ¹tevilène izbire pri ukazu \"s\""
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "¹tevilèna izbira pri ukazu \"s\" mora biti nenièelna"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "niza pri ukazu \"y\" sta razlièno dolga"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "prièakovana novej¹a izdaja programa sed"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Nepravilna uporaba modifikatorja naslova"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Neznan ukaz:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: datoteka %s vrstica %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e izraz #%lu, znak %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "Oznake za skok na \"%s\" ni mo¾no najti"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: %s ni mo¾no prebrati: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "Datoteke %s ni mogoèe odpreti: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "Datoteke %s ni mogoèe odpreti: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Datoteke %s ni mogoèe odpreti: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "Napaka v podprocesu"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "Izbira ,e` ni podprta"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "Ukaz ,e` ni podprt"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Prej¹nji regularni izraz manjka"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Doloèanje modifikatorjev pri praznem regularnem izrazu ni mogoèe"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "Neveljavni sklic \\%d na desni strani ukaza ,s`"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 dovoli uporabo regularnih izrazov, ki jih podpira Perl 5\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 dovoli uporabo regularnih izrazov, ki jih podpira Perl 5\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Sporoèila o napakah po¹ljite na %s .\n"
+"Poskrbite, da bo nekje v polju ,,Subject`` nastopal izraz ,,%s``.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed, razlièica %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"na osnovi GNU sed, razlièica 3.02.80\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed, razlièica %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"To je prost program; pogoji, pod katerimi ga lahko uporabljate, "
+"razmno¾ujete\n"
+"in raz¹irjate so navedeni v izvorni kodi. Za program ni NOBENEGA JAMSTVA,\n"
+"niti jamstev USTREZNOSTI ZA PRODAJO ali PRIMERNOSTI ZA UPORABO.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: %s ni mo¾no prebrati: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "Datoteke %s ni mogoèe odpreti: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "ni mogoèe zapisati %d elementov na %s: %s"
+msgstr[1] "ni mogoèe zapisati %d elementa na %s: %s"
+msgstr[2] "ni mogoèe zapisati %d elementov na %s: %s"
+msgstr[3] "ni mogoèe zapisati %d elementov na %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "napaka pri branju z %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: %s ni mo¾no prebrati: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Uspe¹no"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Ni ujemanja"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Neveljavni regularni izraz"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Znaka izven abecede"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Neveljavno ime razreda znakov"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Zakljuèna obrnjena po¹evnica"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Neveljavni povratni sklic"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "Oklepaj [ ali [^ brez zaklepaja"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "Oklepaj ( ali \\( brez zaklepaja"
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "Oklepaj \\{ brez zaklepaja"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Neveljavna vsebina \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Neveljavna zgornja meja intervala"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Zmanjkalo pomnilnika"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Neveljaven prej¹nji regularni izraz"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Predèasni zakljuèek regularnega izraza"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Regularni izraz prevelik"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Oklepaj ) ali \\) brez zaklepaja"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Prej¹nji regularni izraz manjka"
diff --git a/src/sed/po/sr.gmo b/src/sed/po/sr.gmo
new file mode 100644
index 0000000..5dc0980
--- /dev/null
+++ b/src/sed/po/sr.gmo
diff --git a/src/sed/po/sr.po b/src/sed/po/sr.po
new file mode 100644
index 0000000..c27e2b9
--- /dev/null
+++ b/src/sed/po/sr.po
@@ -0,0 +1,447 @@
+# Serbian translation of `sed'.
+# Copyright (C) 2003 Free Software Foundation, Inc.
+# This file is distributed under the same license as the `sed' package.
+# Aleksandar Jelenak <jelenak@netlinkplus.net>, 2003.
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0.9\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2004-01-13 22:51-0500\n"
+"Last-Translator: Aleksandar Jelenak <jelenak@netlinkplus.net>\n"
+"Language-Team: Serbian <sr@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=3;    plural=n%10==1 && n%100!=11 ? 0 :  (n%10>=2 && n"
+"%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Више „!“"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "�еочекиван „,“"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "�е може �е кори�тити +N или ~N као прва адре�а"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "�е�парена „{“"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "�еочекивана „}“"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Вишак знакова по�ле наредбе"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "Очекивано \\ по�ле „a“, „c“ или „i“"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "„}“ не захтева икакве адре�е"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": не захтева икакве адре�е"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Коментари не прихватају икакве адре�е"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "�едо�таје наредба"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "�аредба кори�ти �амо једну адре�у"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "�езавршена адре�а рег. израза"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "�езавршена наредба „s“"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "�езавршена наредба „y“"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "�епозната опција за „s“"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "више „p“ опција за „s“ наредбу"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "више „g“ опција за „s“ наредбу"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "више бројчаних опција за „s“ наредбу"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "бројчана опција наредбе „s“ не може бити нула"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "ни�ке за команду „y“ �у различите дужине"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "очекивана новија верзија sed-а"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "�аредба кори�ти �амо једну адре�у"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "�епозната наредба:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: датотека %s ред %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e израз #%lu, знак %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "�е могу да нађем ознаку за �кок на „%s“"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: не може читати  %s: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "�е може �е отворити датотека %s: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "�е може �е отворити датотека %s: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "�е могу отворити привремену датотеку %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "грешка у потпроце�у"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "опција „e“ није подржана"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "наредба „e“ није подржана"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Без претходног регуларног израза"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "�е може �е наве�ти измењивач празном рег. изразу"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "�еи�правна референца \\%d на де�ној �трани наредбе „s“"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 кори�ти у �пи�у �интак�у Перла 5 за регуларне изразе.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 кори�ти у �пи�у �интак�у Перла 5 за регуларне изразе.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Епошта за пријаву грешака: %s .\n"
+"По�тарајте �е да укључите реч „%s“ негде у „Subject:“ пољу.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed верзија %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"за�новано на Г�У sed верзија 3.02.80\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "Г�У sed верзија %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Ово је �лободан �офтвер; видети изворни кôд за у�лове умножавања. БЕЗ "
+"икакве\n"
+"гаранције; чак ни о ТРЖИШ�ОСТИ или ИСПУЊ�В�ЊУ ОДРЕЂЕ�Е ПОТРЕБЕ.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: не може читати  %s: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "�е може �е отворити датотека %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "неу�пешан запи� %d �тавке на %s: %s"
+msgstr[1] "неу�пешан запи� %d �тавке на %s: %s"
+msgstr[2] "неу�пешан запи� %d �тавки на %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "грешка учитавања на %s: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: не може читати  %s: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "У�пех"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Без поклапања"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "�еи�правни регуларни израз"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "�еи�правни знак прикупљања"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "�еи�правно име кла�е знакова"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Пратећа обрнута ко�а црта"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "�еи�правна повратна референца"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "�е�парено [ или ^["
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "�е�парено ( или \\("
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "�е�парено \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "�еи�правни �адржај у \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "�еи�правни крај оп�ега"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Меморија и�црпљена"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "�еи�праван претходећи регуларни израз"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Преран крај регуларног израза"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Регуларни израз �увише велик"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "�е�парено ) или \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Без претходног регуларног израза"
diff --git a/src/sed/po/sv.gmo b/src/sed/po/sv.gmo
new file mode 100644
index 0000000..7e4107b
--- /dev/null
+++ b/src/sed/po/sv.gmo
diff --git a/src/sed/po/sv.po b/src/sed/po/sv.po
new file mode 100644
index 0000000..50671fb
--- /dev/null
+++ b/src/sed/po/sv.po
@@ -0,0 +1,463 @@
+# Swedish messages for sed.
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+# Christian Rose <menthos@menthos.com>, 1999, 2000, 2001, 2002, 2003, 2004.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.1.1\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2004-07-11 11:45+0200\n"
+"Last-Translator: Christian Rose <menthos@menthos.com>\n"
+"Language-Team: Swedish <sv@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=iso-8859-1\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: sed/compile.c:162
+msgid "multiple `!'s"
+msgstr "flera \"!\""
+
+#: sed/compile.c:163
+msgid "unexpected `,'"
+msgstr "oväntat \",\""
+
+#: sed/compile.c:164
+msgid "invalid usage of +N or ~N as first address"
+msgstr "ogiltig användning av +N eller ~N som första adress"
+
+#: sed/compile.c:165
+msgid "unmatched `{'"
+msgstr "obalanserad \"{\""
+
+#: sed/compile.c:166
+msgid "unexpected `}'"
+msgstr "oväntad \"}\""
+
+#: sed/compile.c:167
+msgid "extra characters after command"
+msgstr "extra tecken efter kommandot"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "\\ förväntades efter \"a\", \"c\" eller \"i\""
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "\"}\" vill inte ha några adresser"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": vill inte ha några adresser"
+
+#: sed/compile.c:171
+msgid "comments don't accept any addresses"
+msgstr "kommentarer accepterar inga adresser"
+
+#: sed/compile.c:172
+msgid "missing command"
+msgstr "kommando saknas"
+
+#: sed/compile.c:173
+msgid "command only uses one address"
+msgstr "kommandot använder endast en adress"
+
+#: sed/compile.c:174
+msgid "unterminated address regex"
+msgstr "oavslutat reguljärt uttryck för adress"
+
+#: sed/compile.c:175
+msgid "unterminated `s' command"
+msgstr "oavslutat \"s\"-kommando"
+
+#: sed/compile.c:176
+msgid "unterminated `y' command"
+msgstr "oavslutat \"y\"-kommando"
+
+#: sed/compile.c:177
+msgid "unknown option to `s'"
+msgstr "flaggan okänd för \"s\""
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "flera \"p\"-flaggor till \"s\"-kommandot"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "flera \"g\"-flaggor till \"s\"-kommandot"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "flera sifferflaggor till \"s\"-kommandot"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "sifferflagga till kommandot \"s\" får inte vara noll"
+
+#: sed/compile.c:182
+msgid "strings for `y' command are different lengths"
+msgstr "strängarna för kommandot \"y\" är olika långa"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr "avgränsningstecknet är inte en ensam byte"
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "nyare version av sed förväntades"
+
+#: sed/compile.c:185
+msgid "invalid usage of line address 0"
+msgstr "felaktig användning av radadress 0"
+
+#: sed/compile.c:186
+#, c-format
+msgid "unknown command: `%c'"
+msgstr "okänt kommando: \"%c\""
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: fil %s rad %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e uttryck #%lu, tecken %lu: %s\n"
+
+#: sed/compile.c:1644
+#, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "kan inte hitta etiketten för hopp till \"%s\""
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: kan inte läsa %s: %s\n"
+
+#: sed/execute.c:673
+#, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "kunde inte redigera %s: är en terminal"
+
+#: sed/execute.c:677
+#, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "kunde inte redigera %s: inte en vanlig fil"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "kunde inte öppna temporära filen %s: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "fel i underprocess"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr "flaggan \"e\" stöds inte"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "kommandot \"e\" stöds inte"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr "inget tidigare reguljärt uttryck"
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr "kan inte ange modifierare på tomt reguljärt uttryck"
+
+# Kommentar från Jan Djärv:
+# Jag antar RHS står för "right hand side".  Man kan då säga
+# "... kommandots högersida"
+#
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "ogiltig referens \\%d på \"s\"-kommandots högersida"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 använd Perl 5:s syntax för reguljära uttryck i skriptet.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+"Användning: %s [FLAGGA]... {skript-endast-om-inga-andra} [indatafil]...\n"
+"\n"
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+"  -n, --quiet, --silent\n"
+"                 förhindrar automatisk utskrift av mönsterutrymme\n"
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+"  -e skript, --expression=skript\n"
+"                 lägg till skript till de kommandon som ska utföras\n"
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+"  -f skriptfil, --file=skriptfil\n"
+"                 lägg till innehållet i skriptfil till de kommandon som ska\n"
+"                 utföras\n"
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+"  -i[ÄNDELSE], --in-place[=ÄNDELSE]\n"
+"                 redigera filer på plats (skapar säkerhetskopia om ändelse\n"
+"                 tillhandahålls)\n"
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+"  -l N, --line-length=N\n"
+"                 ange önskad radbrytningslängd för \"l\"-kommandot\n"
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+"  --posix\n"
+"                 inaktivera alla GNU-utökningar.\n"
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -r, --regexp-extended\n"
+"                 använd utökade reguljära uttryck i skriptet.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+"  -s, --separate\n"
+"                 betrakta filer som separata istället för som en\n"
+"                 kontinuerlig lång dataström.\n"
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+"  -u, --unbuffered\n"
+"                 läs in minimala mängder data från indatafilerna och töm\n"
+"                 utdatabufferterna oftare\n"
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr "      --help     visa denna hjälptext och avsluta\n"
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr "      --version  visa versionsinformation och avsluta\n"
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+"\n"
+"Om ingen av flaggorna -e, --expression, -f, eller --file ges, blir det\n"
+"första argumentet som inte är en flagga det sed-skript som tolkas. Alla\n"
+"återstående argument är namn på indatafiler. Om inga indatafiler är angivna\n"
+"läses standard in.\n"
+"\n"
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Rapportera fel till: %s .\n"
+"Ange ordet \"%s\" på något ställe i \"Ärende:\"-fältet.\n"
+"Skicka anmärkningar på översättningen till <sv@li.org>.\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed version %s\n"
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"baserad på GNU sed version %s\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed version %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"(Följande text är en informell översättning som enbart tillhandahålls\n"
+" i informativt syfte. För alla juridiska tolkningar gäller den engelska\n"
+" originaltexten.)\n"
+"Det här är fri programvara; se källkoden angående villkor för kopiering.\n"
+"Det finns INGEN garanti; inte ens för SÄLJBARHET eller LÄMPLIGHET FÖR NÅGOT\n"
+"SPECIELLT ÄNDAMÅL, i den omfattning som medges av gällande lag.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, c-format
+msgid "cannot remove %s: %s"
+msgstr "kan inte ta bort %s: %s"
+
+#: lib/utils.c:143
+#, c-format
+msgid "couldn't open file %s: %s"
+msgstr "kunde inte öppna filen %s: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "kunde inte skriva %d objekt till %s: %s"
+msgstr[1] "kunde inte skriva %d objekt till %s: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "läsfel vid %s: %s"
+
+#: lib/utils.c:341
+#, c-format
+msgid "cannot rename %s: %s"
+msgstr "kan inte byta namn på %s: %s"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Lyckades"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Ingen träff"
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Ogiltigt reguljärt uttryck"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Ogiltigt sorteringstecken"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Ogiltigt teckenklassnamn"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Eftersläpande omvänt snedstreck"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Ogiltig bakåtreferens"
+
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "Obalanserad [ eller [^"
+
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "Obalanserad ( eller \\("
+
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "Obalanserad \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "Ogiltigt innehåll i \\{\\}"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Ogiltigt intervallslut"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Minnet slut"
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Ogiltigt föregående reguljärt uttryck"
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "För tidigt slut på reguljärt uttryck"
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Reguljärt uttryck för stort"
+
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "Obalanserad ) eller \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Inget tidigare reguljärt uttryck"
diff --git a/src/sed/po/tr.gmo b/src/sed/po/tr.gmo
new file mode 100644
index 0000000..68bc8c3
--- /dev/null
+++ b/src/sed/po/tr.gmo
diff --git a/src/sed/po/tr.po b/src/sed/po/tr.po
new file mode 100644
index 0000000..b32485a
--- /dev/null
+++ b/src/sed/po/tr.po
@@ -0,0 +1,455 @@
+# translation of sed-4.0.9.tr.po to Turkish
+# Copyright (C) 2003 Free Software Foundation, Inc.
+# Deniz Akkus Kanca <deniz@arayan.com>, 2001,2003, 2004.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 4.0.9\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2004-05-19 18:06+0300\n"
+"Last-Translator: Deniz Akkus Kanca <deniz@arayan.com>\n"
+"Language-Team: Turkish <gnu-tr-u12a@lists.sourceforge.net>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: KBabel 1.0.2\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "Birden fazla '!'"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "Beklenmeyen ','"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "İlk adres olarak +N veya ~N kullanılamaz"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "EÅŸleÅŸmeyen '{'"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "Beklenmeyen '}'"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "Komuttan sonra fazla karakterler var"
+
+#: sed/compile.c:168
+#, fuzzy
+msgid "expected \\ after `a', `c' or `i'"
+msgstr "`a', `c' veya `i' sonrası \\ beklendi"
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "'}' için adres istenmez"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": için hiç adres istenmez"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "Açıklamalarda adres kabul edilmez"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "Komut eksik"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "Komutta yalnızca tek adres kullanılır"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "Sonlandırılmamış adres düzenli ifadesi"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "Sonlandırılmamış 's' komutu"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "Sonlandırılmamış 'y' komutu"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "`s' komutuna bilinmeyen seçenek verilmiş"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "`s' komutuna birden fazla `p' seçeneği verilmiş"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "`s' komutuna birden fazla `g' seçeneği verilmiş"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "`s' komutuna birden fazla sayı seçeneği verilmiş"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "`s' komutuna verilen sayı seçeneği sıfır olamaz"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "y komutu için dizgeler değişik uzunluklarda"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr "sed'in daha yeni bir sürümü beklendi"
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "Adres değiştirici hatalı kullanılmış"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "Bilinmeyen komut:"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s: dosya %s satır %lu: %s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s: -e ifade #%lu, harf %lu: %s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "`%s'e atlamak için etiket bulunamıyor"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s: %s okunamıyor: %s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "%d sayıda öğe %s'e yazılamadı: %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "%d sayıda öğe %s'e yazılamadı: %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "Geçici dosya %s açılamadı: %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr "altsüreçte hata"
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr " e' seçeneği desteklenmiyor"
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr "`e' komutu desteklenmiyor"
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+#, fuzzy
+msgid "no previous regular expression"
+msgstr "Daha önce düzenli ifade yok"
+
+#: sed/regexp.c:40
+#, fuzzy
+msgid "cannot specify modifiers on empty regexp"
+msgstr "Boş düzenli ifadeye değiştirici atanamaz"
+
+#: sed/regexp.c:115
+#, fuzzy, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr "`s' komutunun RHS'sinde geçersiz \\%d referansı"
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 betikte Perl 5'in düzenli ifade sözdizimini kullanır.\n"
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, fuzzy, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+"  -R, --regexp-perl\n"
+"                 betikte Perl 5'in düzenli ifade sözdizimini kullanır.\n"
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"Yazılım hatalarını %s adresine, çeviri hatalarını \n"
+"<gnu-tr-u12a@lists.sourceforge.net> adresine bildirin. \n"
+"``%s'' sözcüğünün Konu başlığında yer almasına dikkat edin. \n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr "super-sed sürüm %s\n"
+
+#: sed/sed.c:269
+#, fuzzy, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+"GNU sed sürümü 3.02.80 temel alınmıştır\n"
+"\n"
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr "GNU sed sürümü %s\n"
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+"%s\n"
+"Bu serbest yazılımdır; kopyalama koşulları için kaynak koduna bakınız.\n"
+"Hiçbir garantisi yoktur; hatta SATILABİLİRLİĞİ veya HERHANGİ BİR AMACA\n"
+"UYGUNLUĞU için bile garanti verilmez.\n"
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s: %s okunamıyor: %s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "%s dosyası açılamadı: %s"
+
+#: lib/utils.c:220
+#, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "%d sayıda öğe %s'e yazılamadı: %s"
+msgstr[1] "%d sayıda öğe %s'e yazılamadı: %s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "%s'de okuma hatası: %s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s: %s okunamıyor: %s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr "Başarılı"
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr "Eşleşme bulunamadı"
+
+#
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr "Hatalı düzenli ifade"
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr "Hatalı birleştirme karakteri"
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr "Hatalı karakter sınıf ismi"
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr "Sonda fazla gerikesme var"
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr "Hatalı geri referans"
+
+#
+#: lib/regcomp.c:153
+msgid "Unmatched [ or [^"
+msgstr "EÅŸleÅŸmeyen [ veya [^"
+
+#
+#: lib/regcomp.c:156
+msgid "Unmatched ( or \\("
+msgstr "EÅŸleÅŸmeyen ( veya \\("
+
+#
+#: lib/regcomp.c:159
+msgid "Unmatched \\{"
+msgstr "EÅŸleÅŸmeyen \\{"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr "\\{\\} içeriği hatalı"
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr "Geçersiz kapsam sonu"
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr "Bellek tükendi"
+
+#
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr "Bir önceki düzenli ifade hatalı"
+
+#
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr "Düzenli ifade erken sonlandı"
+
+#
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr "Düzenli ifade fazla büyük"
+
+#
+#: lib/regcomp.c:180
+msgid "Unmatched ) or \\)"
+msgstr "EÅŸleÅŸmeyen ) or \\)"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr "Daha önce düzenli ifade yok"
diff --git a/src/sed/po/zh_CN.gmo b/src/sed/po/zh_CN.gmo
new file mode 100644
index 0000000..154aba5
--- /dev/null
+++ b/src/sed/po/zh_CN.gmo
diff --git a/src/sed/po/zh_CN.po b/src/sed/po/zh_CN.po
new file mode 100644
index 0000000..8709ff7
--- /dev/null
+++ b/src/sed/po/zh_CN.po
@@ -0,0 +1,435 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) 2002 Free Software Foundation, Inc.
+# Wang Li <charles@linux.net.cn>, 2002.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: sed 3.02.80\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2006-02-03 10:26+0100\n"
+"PO-Revision-Date: 2002-08-18 11:11+0800\n"
+"Last-Translator: Wang Li <charles@linux.net.cn>\n"
+"Language-Team: Chinese (simplified) <i18n-translation@lists.linux.net.cn>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=gb2312\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: sed/compile.c:162
+#, fuzzy
+msgid "multiple `!'s"
+msgstr "¶à¸ö¡°!¡±"
+
+#: sed/compile.c:163
+#, fuzzy
+msgid "unexpected `,'"
+msgstr "ÒâÍâµÄ¡°,¡±"
+
+#: sed/compile.c:164
+#, fuzzy
+msgid "invalid usage of +N or ~N as first address"
+msgstr "ÎÞ·¨½« +N »ò ~N ×÷ΪµÚÒ»¸öµØÖ·"
+
+#: sed/compile.c:165
+#, fuzzy
+msgid "unmatched `{'"
+msgstr "δƥÅäµÄ¡°{¡±"
+
+#: sed/compile.c:166
+#, fuzzy
+msgid "unexpected `}'"
+msgstr "δƥÅäµÄ¡°}¡±"
+
+#: sed/compile.c:167
+#, fuzzy
+msgid "extra characters after command"
+msgstr "ÃüÁîºóº¬ÓжàÓàµÄ×Ö·û"
+
+#: sed/compile.c:168
+msgid "expected \\ after `a', `c' or `i'"
+msgstr ""
+
+#: sed/compile.c:169
+msgid "`}' doesn't want any addresses"
+msgstr "¡°}¡±²»ÐèÒªÈκεØÖ·"
+
+#: sed/compile.c:170
+msgid ": doesn't want any addresses"
+msgstr ": ²»ÐèÒªÈκεØÖ·"
+
+#: sed/compile.c:171
+#, fuzzy
+msgid "comments don't accept any addresses"
+msgstr "×¢ÊͲ»½ÓÊÜÈκεØÖ·"
+
+#: sed/compile.c:172
+#, fuzzy
+msgid "missing command"
+msgstr "ÒÅ©ÃüÁî"
+
+#: sed/compile.c:173
+#, fuzzy
+msgid "command only uses one address"
+msgstr "ÃüÁîֻʹÓÃÒ»¸öµØÖ·"
+
+#: sed/compile.c:174
+#, fuzzy
+msgid "unterminated address regex"
+msgstr "δÖÕÖ¹µÄµØÖ·³£¹æ±í´ïʽ"
+
+#: sed/compile.c:175
+#, fuzzy
+msgid "unterminated `s' command"
+msgstr "δÖÕÖ¹µÄ¡°s¡±ÃüÁî"
+
+#: sed/compile.c:176
+#, fuzzy
+msgid "unterminated `y' command"
+msgstr "δÖÕÖ¹µÄ¡°y¡±ÃüÁî"
+
+#: sed/compile.c:177
+#, fuzzy
+msgid "unknown option to `s'"
+msgstr "¡°s¡±µÄδ֪ѡÏî"
+
+#: sed/compile.c:178
+msgid "multiple `p' options to `s' command"
+msgstr "¶à¸ö¡°s¡±ÃüÁîµÄÑ¡Ïî¡°p¡±"
+
+#: sed/compile.c:179
+msgid "multiple `g' options to `s' command"
+msgstr "¶à¸ö¡°s¡±ÃüÁîµÄÑ¡Ïî¡°g¡±"
+
+#: sed/compile.c:180
+msgid "multiple number options to `s' command"
+msgstr "¶à¸ö¡°s¡±ÃüÁîµÄÊýֵѡÏî"
+
+#: sed/compile.c:181
+msgid "number option to `s' command may not be zero"
+msgstr "¡°s¡±ÃüÁîµÄÊýֵѡÏî²»ÄÜΪÁã"
+
+#: sed/compile.c:182
+#, fuzzy
+msgid "strings for `y' command are different lengths"
+msgstr "y ÃüÁîµÄ×Ö·û´®³¤¶È²»Í¬"
+
+#: sed/compile.c:183
+msgid "delimiter character is not a single-byte character"
+msgstr ""
+
+#: sed/compile.c:184
+msgid "expected newer version of sed"
+msgstr ""
+
+#: sed/compile.c:185
+#, fuzzy
+msgid "invalid usage of line address 0"
+msgstr "·Ç·¨Ê¹ÓõØÖ·ÐÞÊηû"
+
+#: sed/compile.c:186
+#, fuzzy, c-format
+msgid "unknown command: `%c'"
+msgstr "δ֪µÄÃüÁ"
+
+#: sed/compile.c:209
+#, c-format
+msgid "%s: file %s line %lu: %s\n"
+msgstr "%s£ºÎļþ %s Ðкţº%lu£º%s\n"
+
+#: sed/compile.c:212
+#, c-format
+msgid "%s: -e expression #%lu, char %lu: %s\n"
+msgstr "%s£º-e ±í´ïʽ #%lu£¬×Ö·û %lu£º%s\n"
+
+#: sed/compile.c:1644
+#, fuzzy, c-format
+msgid "can't find label for jump to `%s'"
+msgstr "ÎÞ·¨ÎªÄ¿µÄΪ¡°%s¡±µÄÌøתÕÒµ½±êÇ©"
+
+#: sed/execute.c:650
+#, c-format
+msgid "%s: can't read %s: %s\n"
+msgstr "%s£ºÎÞ·¨¶ÁÈ¡ %s£º%s\n"
+
+#: sed/execute.c:673
+#, fuzzy, c-format
+msgid "couldn't edit %s: is a terminal"
+msgstr "ÎÞ·¨´ò¿ªÎļþ %s"
+
+#: sed/execute.c:677
+#, fuzzy, c-format
+msgid "couldn't edit %s: not a regular file"
+msgstr "ÎÞ·¨´ò¿ªÎļþ %s"
+
+#: sed/execute.c:684 lib/utils.c:196
+#, fuzzy, c-format
+msgid "couldn't open temporary file %s: %s"
+msgstr "ÎÞ·¨´ò¿ªÎļþ %s"
+
+#: sed/execute.c:1206 sed/execute.c:1387
+msgid "error in subprocess"
+msgstr ""
+
+#: sed/execute.c:1208
+msgid "option `e' not supported"
+msgstr ""
+
+#: sed/execute.c:1389
+msgid "`e' command not supported"
+msgstr ""
+
+#: sed/execute.c:1714
+msgid "no input files"
+msgstr ""
+
+#: sed/regexp.c:39
+msgid "no previous regular expression"
+msgstr ""
+
+#: sed/regexp.c:40
+msgid "cannot specify modifiers on empty regexp"
+msgstr ""
+
+#: sed/regexp.c:115
+#, c-format
+msgid "invalid reference \\%d on `s' command's RHS"
+msgstr ""
+
+#: sed/sed.c:93
+msgid ""
+"  -R, --regexp-perl\n"
+"                 use Perl 5's regular expressions syntax in the script.\n"
+msgstr ""
+
+#: sed/sed.c:98
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:102
+#, c-format
+msgid ""
+"  -n, --quiet, --silent\n"
+"                 suppress automatic printing of pattern space\n"
+msgstr ""
+
+#: sed/sed.c:104
+#, c-format
+msgid ""
+"  -e script, --expression=script\n"
+"                 add the script to the commands to be executed\n"
+msgstr ""
+
+#: sed/sed.c:106
+#, c-format
+msgid ""
+"  -f script-file, --file=script-file\n"
+"                 add the contents of script-file to the commands to be "
+"executed\n"
+msgstr ""
+
+#: sed/sed.c:108
+#, c-format
+msgid ""
+"  -i[SUFFIX], --in-place[=SUFFIX]\n"
+"                 edit files in place (makes backup if extension supplied)\n"
+msgstr ""
+
+#: sed/sed.c:110
+#, c-format
+msgid ""
+"  -l N, --line-length=N\n"
+"                 specify the desired line-wrap length for the `l' command\n"
+msgstr ""
+
+#: sed/sed.c:112
+#, c-format
+msgid ""
+"  --posix\n"
+"                 disable all GNU extensions.\n"
+msgstr ""
+
+#: sed/sed.c:114
+#, c-format
+msgid ""
+"  -r, --regexp-extended\n"
+"                 use extended regular expressions in the script.\n"
+msgstr ""
+
+#: sed/sed.c:117
+#, c-format
+msgid ""
+"  -s, --separate\n"
+"                 consider files as separate rather than as a single "
+"continuous\n"
+"                 long stream.\n"
+msgstr ""
+
+#: sed/sed.c:120
+#, c-format
+msgid ""
+"  -u, --unbuffered\n"
+"                 load minimal amounts of data from the input files and "
+"flush\n"
+"                 the output buffers more often\n"
+msgstr ""
+
+#: sed/sed.c:123
+#, c-format
+msgid "      --help     display this help and exit\n"
+msgstr ""
+
+#: sed/sed.c:124
+#, c-format
+msgid "      --version  output version information and exit\n"
+msgstr ""
+
+#: sed/sed.c:125
+#, c-format
+msgid ""
+"\n"
+"If no -e, --expression, -f, or --file option is given, then the first\n"
+"non-option argument is taken as the sed script to interpret.  All\n"
+"remaining arguments are names of input files; if no input files are\n"
+"specified, then the standard input is read.\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:131
+#, c-format
+msgid ""
+"E-mail bug reports to: %s .\n"
+"Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"
+msgstr ""
+"½«´íÎ󱨸æͨ¹ýµç×ÓÓʼþ·¢Ë͵½£º%s .\n"
+"ÇëÎñ±Ø½«µ¥´Ê¡°%s¡±·ÅÔÚ¡°Subject:¡±ÓòµÄij´¦¡£\n"
+
+#: sed/sed.c:268
+#, c-format
+msgid "super-sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:269
+#, c-format
+msgid ""
+"based on GNU sed version %s\n"
+"\n"
+msgstr ""
+
+#: sed/sed.c:271
+#, c-format
+msgid "GNU sed version %s\n"
+msgstr ""
+
+#: sed/sed.c:273
+#, c-format
+msgid ""
+"%s\n"
+"This is free software; see the source for copying conditions.  There is NO\n"
+"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n"
+"to the extent permitted by law.\n"
+msgstr ""
+
+#: lib/utils.c:98 lib/utils.c:336
+#, fuzzy, c-format
+msgid "cannot remove %s: %s"
+msgstr "%s£ºÎÞ·¨¶ÁÈ¡ %s£º%s\n"
+
+#: lib/utils.c:143
+#, fuzzy, c-format
+msgid "couldn't open file %s: %s"
+msgstr "ÎÞ·¨´ò¿ªÎļþ %s"
+
+#: lib/utils.c:220
+#, fuzzy, c-format
+msgid "couldn't write %d item to %s: %s"
+msgid_plural "couldn't write %d items to %s: %s"
+msgstr[0] "ÎÞ·¨½« %d ¸öÏîĿдÈë %s£º%s"
+msgstr[1] "ÎÞ·¨½« %d ¸öÏîĿдÈë %s£º%s"
+
+#: lib/utils.c:235 lib/utils.c:251
+#, c-format
+msgid "read error on %s: %s"
+msgstr "¶ÁÈ¡ %s ³ö´í£º%s"
+
+#: lib/utils.c:341
+#, fuzzy, c-format
+msgid "cannot rename %s: %s"
+msgstr "%s£ºÎÞ·¨¶ÁÈ¡ %s£º%s\n"
+
+#: lib/regcomp.c:132
+msgid "Success"
+msgstr ""
+
+#: lib/regcomp.c:135
+msgid "No match"
+msgstr ""
+
+#: lib/regcomp.c:138
+msgid "Invalid regular expression"
+msgstr ""
+
+#: lib/regcomp.c:141
+msgid "Invalid collation character"
+msgstr ""
+
+#: lib/regcomp.c:144
+msgid "Invalid character class name"
+msgstr ""
+
+#: lib/regcomp.c:147
+msgid "Trailing backslash"
+msgstr ""
+
+#: lib/regcomp.c:150
+msgid "Invalid back reference"
+msgstr ""
+
+#: lib/regcomp.c:153
+#, fuzzy
+msgid "Unmatched [ or [^"
+msgstr "δƥÅäµÄ¡°{¡±"
+
+#: lib/regcomp.c:156
+#, fuzzy
+msgid "Unmatched ( or \\("
+msgstr "δƥÅäµÄ¡°{¡±"
+
+#: lib/regcomp.c:159
+#, fuzzy
+msgid "Unmatched \\{"
+msgstr "δƥÅäµÄ¡°{¡±"
+
+#: lib/regcomp.c:162
+msgid "Invalid content of \\{\\}"
+msgstr ""
+
+#: lib/regcomp.c:165
+msgid "Invalid range end"
+msgstr ""
+
+#: lib/regcomp.c:168
+msgid "Memory exhausted"
+msgstr ""
+
+#: lib/regcomp.c:171
+msgid "Invalid preceding regular expression"
+msgstr ""
+
+#: lib/regcomp.c:174
+msgid "Premature end of regular expression"
+msgstr ""
+
+#: lib/regcomp.c:177
+msgid "Regular expression too big"
+msgstr ""
+
+#: lib/regcomp.c:180
+#, fuzzy
+msgid "Unmatched ) or \\)"
+msgstr "δƥÅäµÄ¡°{¡±"
+
+#: lib/regcomp.c:660
+msgid "No previous regular expression"
+msgstr ""
diff --git a/src/sed/sed/Makefile.am b/src/sed/sed/Makefile.am
new file mode 100644
index 0000000..e2b5b9d
--- /dev/null
+++ b/src/sed/sed/Makefile.am
@@ -0,0 +1,18 @@
+## Process this file with automake to produce Makefile.in
+bin_PROGRAMS = sed
+
+localedir = $(datadir)/locale
+
+sed_SOURCES = sed.c compile.c execute.c regexp.c fmt.c mbcs.c
+noinst_HEADERS = sed.h
+
+AM_CPPFLAGS = -I$(top_srcdir)/lib -I$(top_srcdir)/intl \
+	-I$(top_srcdir) -I$(top_builddir)/lib \
+	-I$(top_builddir)/intl -DLOCALEDIR=\"$(localedir)\"
+
+sed_LDADD = ../lib/libsed.a @INTLLIBS@
+sed_DEPENDENCIES = ../lib/libsed.a
+
+$(PROGRAMS): $(LDADD)
+
+
diff --git a/src/sed/sed/Makefile.in b/src/sed/sed/Makefile.in
new file mode 100644
index 0000000..2d1d30d
--- /dev/null
+++ b/src/sed/sed/Makefile.in
@@ -0,0 +1,482 @@
+# Makefile.in generated by automake 1.9.5 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005  Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
+SOURCES = $(sed_SOURCES)
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+top_builddir = ..
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+INSTALL = @INSTALL@
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+bin_PROGRAMS = sed$(EXEEXT)
+subdir = sed
+DIST_COMMON = $(noinst_HEADERS) $(srcdir)/Makefile.am \
+	$(srcdir)/Makefile.in
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/config/codeset.m4 \
+	$(top_srcdir)/config/getline.m4 \
+	$(top_srcdir)/config/gettext-ver.m4 \
+	$(top_srcdir)/config/gettext.m4 \
+	$(top_srcdir)/config/glibc21.m4 $(top_srcdir)/config/iconv.m4 \
+	$(top_srcdir)/config/lcmessage.m4 \
+	$(top_srcdir)/config/lib-ld.m4 \
+	$(top_srcdir)/config/lib-link.m4 \
+	$(top_srcdir)/config/lib-prefix.m4 \
+	$(top_srcdir)/config/progtest.m4 \
+	$(top_srcdir)/config/stdbool.m4 \
+	$(top_srcdir)/config/strverscmp.m4 $(top_srcdir)/configure.ac
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+	$(ACLOCAL_M4)
+mkinstalldirs = $(install_sh) -d
+CONFIG_HEADER = $(top_builddir)/config.h
+CONFIG_CLEAN_FILES =
+am__installdirs = "$(DESTDIR)$(bindir)"
+binPROGRAMS_INSTALL = $(INSTALL_PROGRAM)
+PROGRAMS = $(bin_PROGRAMS)
+am_sed_OBJECTS = sed.$(OBJEXT) compile.$(OBJEXT) execute.$(OBJEXT) \
+	regexp.$(OBJEXT) fmt.$(OBJEXT) mbcs.$(OBJEXT)
+sed_OBJECTS = $(am_sed_OBJECTS)
+DEFAULT_INCLUDES = -I. -I$(srcdir) -I$(top_builddir)
+depcomp = $(SHELL) $(top_srcdir)/config/depcomp
+am__depfiles_maybe = depfiles
+COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+CCLD = $(CC)
+LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+SOURCES = $(sed_SOURCES)
+DIST_SOURCES = $(sed_SOURCES)
+HEADERS = $(noinst_HEADERS)
+ETAGS = etags
+CTAGS = ctags
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+ACLOCAL = @ACLOCAL@
+ALLOCA = @ALLOCA@
+AMDEP_FALSE = @AMDEP_FALSE@
+AMDEP_TRUE = @AMDEP_TRUE@
+AMTAR = @AMTAR@
+AUTOCONF = @AUTOCONF@
+AUTOHEADER = @AUTOHEADER@
+AUTOMAKE = @AUTOMAKE@
+AWK = @AWK@
+BUILD_HTML_FALSE = @BUILD_HTML_FALSE@
+BUILD_HTML_TRUE = @BUILD_HTML_TRUE@
+BUILD_INCLUDED_LIBINTL = @BUILD_INCLUDED_LIBINTL@
+CATOBJEXT = @CATOBJEXT@
+CC = @CC@
+CCDEPMODE = @CCDEPMODE@
+CFLAGS = @CFLAGS@
+CPP = @CPP@
+CPPFLAGS = @CPPFLAGS@
+CYGPATH_W = @CYGPATH_W@
+DATADIRNAME = @DATADIRNAME@
+DEFS = @DEFS@
+DEPDIR = @DEPDIR@
+ECHO_C = @ECHO_C@
+ECHO_N = @ECHO_N@
+ECHO_T = @ECHO_T@
+EGREP = @EGREP@
+EXEEXT = @EXEEXT@
+GENCAT = @GENCAT@
+GLIBC21 = @GLIBC21@
+GMSGFMT = @GMSGFMT@
+HAVE__BOOL = @HAVE__BOOL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INSTOBJEXT = @INSTOBJEXT@
+INTLBISON = @INTLBISON@
+INTLLIBS = @INTLLIBS@
+INTLOBJS = @INTLOBJS@
+INTL_LIBTOOL_SUFFIX_PREFIX = @INTL_LIBTOOL_SUFFIX_PREFIX@
+LDFLAGS = @LDFLAGS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBOBJS = @LIBOBJS@
+LIBS = @LIBS@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBOBJS = @LTLIBOBJS@
+MAKEINFO = @MAKEINFO@
+MAKEINFO_HTML_FALSE = @MAKEINFO_HTML_FALSE@
+MAKEINFO_HTML_TRUE = @MAKEINFO_HTML_TRUE@
+MKINSTALLDIRS = @MKINSTALLDIRS@
+MSGFMT = @MSGFMT@
+MSGMERGE = @MSGMERGE@
+OBJEXT = @OBJEXT@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+POSUB = @POSUB@
+RANLIB = @RANLIB@
+SED_FEATURE_VERSION = @SED_FEATURE_VERSION@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+STRIP = @STRIP@
+TEST_REGEX_FALSE = @TEST_REGEX_FALSE@
+TEST_REGEX_TRUE = @TEST_REGEX_TRUE@
+TEXI2HTML = @TEXI2HTML@
+TEXI2HTML_HTML_FALSE = @TEXI2HTML_HTML_FALSE@
+TEXI2HTML_HTML_TRUE = @TEXI2HTML_HTML_TRUE@
+USE_INCLUDED_LIBINTL = @USE_INCLUDED_LIBINTL@
+USE_NLS = @USE_NLS@
+VERSION = @VERSION@
+XGETTEXT = @XGETTEXT@
+ac_ct_CC = @ac_ct_CC@
+ac_ct_RANLIB = @ac_ct_RANLIB@
+ac_ct_STRIP = @ac_ct_STRIP@
+am__fastdepCC_FALSE = @am__fastdepCC_FALSE@
+am__fastdepCC_TRUE = @am__fastdepCC_TRUE@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+datadir = @datadir@
+exec_prefix = @exec_prefix@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libdir = @libdir@
+libexecdir = @libexecdir@
+localstatedir = @localstatedir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+oldincludedir = @oldincludedir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+localedir = $(datadir)/locale
+sed_SOURCES = sed.c compile.c execute.c regexp.c fmt.c mbcs.c
+noinst_HEADERS = sed.h
+AM_CPPFLAGS = -I$(top_srcdir)/lib -I$(top_srcdir)/intl \
+	-I$(top_srcdir) -I$(top_builddir)/lib \
+	-I$(top_builddir)/intl -DLOCALEDIR=\"$(localedir)\"
+
+sed_LDADD = ../lib/libsed.a @INTLLIBS@
+sed_DEPENDENCIES = ../lib/libsed.a
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .o .obj
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh \
+		&& exit 0; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnits  sed/Makefile'; \
+	cd $(top_srcdir) && \
+	  $(AUTOMAKE) --gnits  sed/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+install-binPROGRAMS: $(bin_PROGRAMS)
+	@$(NORMAL_INSTALL)
+	test -z "$(bindir)" || $(mkdir_p) "$(DESTDIR)$(bindir)"
+	@list='$(bin_PROGRAMS)'; for p in $$list; do \
+	  p1=`echo $$p|sed 's/$(EXEEXT)$$//'`; \
+	  if test -f $$p \
+	  ; then \
+	    f=`echo "$$p1" | sed 's,^.*/,,;$(transform);s/$$/$(EXEEXT)/'`; \
+	   echo " $(INSTALL_PROGRAM_ENV) $(binPROGRAMS_INSTALL) '$$p' '$(DESTDIR)$(bindir)/$$f'"; \
+	   $(INSTALL_PROGRAM_ENV) $(binPROGRAMS_INSTALL) "$$p" "$(DESTDIR)$(bindir)/$$f" || exit 1; \
+	  else :; fi; \
+	done
+
+uninstall-binPROGRAMS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(bin_PROGRAMS)'; for p in $$list; do \
+	  f=`echo "$$p" | sed 's,^.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/'`; \
+	  echo " rm -f '$(DESTDIR)$(bindir)/$$f'"; \
+	  rm -f "$(DESTDIR)$(bindir)/$$f"; \
+	done
+
+clean-binPROGRAMS:
+	-test -z "$(bin_PROGRAMS)" || rm -f $(bin_PROGRAMS)
+
+installcheck-binPROGRAMS: $(bin_PROGRAMS)
+	bad=0; pid=$$$$; list="$(bin_PROGRAMS)"; for p in $$list; do \
+	  case ' $(AM_INSTALLCHECK_STD_OPTIONS_EXEMPT) ' in \
+	   *" $$p "* | *" $(srcdir)/$$p "*) continue;; \
+	  esac; \
+	  f=`echo "$$p" | \
+	     sed 's,^.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/'`; \
+	  for opt in --help --version; do \
+	    if "$(DESTDIR)$(bindir)/$$f" $$opt >c$${pid}_.out \
+	         2>c$${pid}_.err </dev/null \
+		 && test -n "`cat c$${pid}_.out`" \
+		 && test -z "`cat c$${pid}_.err`"; then :; \
+	    else echo "$$f does not support $$opt" 1>&2; bad=1; fi; \
+	  done; \
+	done; rm -f c$${pid}_.???; exit $$bad
+sed$(EXEEXT): $(sed_OBJECTS) $(sed_DEPENDENCIES) 
+	@rm -f sed$(EXEEXT)
+	$(LINK) $(sed_LDFLAGS) $(sed_OBJECTS) $(sed_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/compile.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/execute.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/fmt.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mbcs.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/regexp.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sed.Po@am__quote@
+
+.c.o:
+@am__fastdepCC_TRUE@	if $(COMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ $<; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Po"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(COMPILE) -c $<
+
+.c.obj:
+@am__fastdepCC_TRUE@	if $(COMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ `$(CYGPATH_W) '$<'`; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Po"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(COMPILE) -c `$(CYGPATH_W) '$<'`
+uninstall-info-am:
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	mkid -fID $$unique
+tags: TAGS
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	if test -z "$(ETAGS_ARGS)$$tags$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	    $$tags $$unique; \
+	fi
+ctags: CTAGS
+CTAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	test -z "$(CTAGS_ARGS)$$tags$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$tags $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && cd $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) $$here
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's|.|.|g'`; \
+	list='$(DISTFILES)'; for file in $$list; do \
+	  case $$file in \
+	    $(srcdir)/*) file=`echo "$$file" | sed "s|^$$srcdirstrip/||"`;; \
+	    $(top_srcdir)/*) file=`echo "$$file" | sed "s|^$$topsrcdirstrip/|$(top_builddir)/|"`;; \
+	  esac; \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \
+	  if test "$$dir" != "$$file" && test "$$dir" != "."; then \
+	    dir="/$$dir"; \
+	    $(mkdir_p) "$(distdir)$$dir"; \
+	  else \
+	    dir=''; \
+	  fi; \
+	  if test -d $$d/$$file; then \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
+	    fi; \
+	    cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
+	  else \
+	    test -f $(distdir)/$$file \
+	    || cp -p $$d/$$file $(distdir)/$$file \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(PROGRAMS) $(HEADERS)
+installdirs:
+	for dir in "$(DESTDIR)$(bindir)"; do \
+	  test -z "$$dir" || $(mkdir_p) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-binPROGRAMS clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-exec-am: install-binPROGRAMS
+
+install-info: install-info-am
+
+install-man:
+
+installcheck-am: installcheck-binPROGRAMS
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-binPROGRAMS uninstall-info-am
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-binPROGRAMS \
+	clean-generic ctags distclean distclean-compile \
+	distclean-generic distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-binPROGRAMS \
+	install-data install-data-am install-exec install-exec-am \
+	install-info install-info-am install-man install-strip \
+	installcheck installcheck-am installcheck-binPROGRAMS \
+	installdirs maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-compile mostlyclean-generic pdf pdf-am \
+	ps ps-am tags uninstall uninstall-am uninstall-binPROGRAMS \
+	uninstall-info-am
+
+
+$(PROGRAMS): $(LDADD)
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/sed/sed/compile.c b/src/sed/sed/compile.c
new file mode 100644
index 0000000..0ecc2fe
--- /dev/null
+++ b/src/sed/sed/compile.c
@@ -0,0 +1,1725 @@
+/*  GNU SED, a batch stream editor.
+    Copyright (C) 1989,90,91,92,93,94,95,98,99,2002,2003,2004,2005,2006
+    Free Software Foundation, Inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2, or (at your option)
+    any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+/* compile.c: translate sed source into internal form */
+
+#include "sed.h"
+#include "strverscmp.h"
+#include <stdio.h>
+#include <ctype.h>
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+# ifdef HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+#else
+# include <string.h>
+#endif /* HAVE_STRINGS_H */
+
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+#ifndef EXIT_FAILURE
+# define EXIT_FAILURE 1
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#include <obstack.h>
+
+
+#define YMAP_LENGTH		256 /*XXX shouldn't this be (UCHAR_MAX+1)?*/
+#define VECTOR_ALLOC_INCREMENT	40
+
+/* let's not confuse text editors that have only dumb bracket-matching... */
+#define OPEN_BRACKET	'['
+#define CLOSE_BRACKET	']'
+#define OPEN_BRACE	'{'
+#define CLOSE_BRACE	'}'
+
+struct prog_info {
+  /* When we're reading a script command from a string, `prog.base'
+     points to the first character in the string, 'prog.cur' points
+     to the current character in the string, and 'prog.end' points
+     to the end of the string.  This allows us to compile script
+     strings that contain nulls. */
+  const unsigned char *base;
+  const unsigned char *cur;
+  const unsigned char *end;
+
+  /* This is the current script file.  If it is NULL, we are reading
+     from a string stored at `prog.cur' instead.  If both `prog.file'
+     and `prog.cur' are NULL, we're in trouble! */
+  FILE *file;
+};
+
+/* Information used to give out useful and informative error messages. */
+struct error_info {
+  /* This is the name of the current script file. */
+  const char *name;
+
+  /* This is the number of the current script line that we're compiling. */
+  countT line;
+
+  /* This is the index of the "-e" expressions on the command line. */
+  countT string_expr_count;
+};
+
+
+/* Label structure used to resolve GOTO's, labels, and block beginnings. */
+struct sed_label {
+  countT v_index;		/* index of vector element being referenced */
+  char *name;			/* NUL-terminated name of the label */
+  struct error_info err_info;	/* track where `{}' blocks start */
+  struct sed_label *next;	/* linked list (stack) */
+};
+
+struct special_files {
+  struct output outf;
+  FILE **pfp;
+};
+
+FILE *my_stdin, *my_stdout, *my_stderr;
+struct special_files special_files[] = {
+  { { "/dev/stdin", false, NULL, NULL }, &my_stdin },
+  { { "/dev/stdout", false, NULL, NULL }, &my_stdout },
+  { { "/dev/stderr", false, NULL, NULL }, &my_stderr },
+  { { NULL, false, NULL, NULL }, NULL }
+};
+
+
+/* Where we are in the processing of the input. */
+static struct prog_info prog;
+static struct error_info cur_input;
+
+/* Information about labels and jumps-to-labels.  This is used to do
+   the required backpatching after we have compiled all the scripts. */
+static struct sed_label *jumps = NULL;
+static struct sed_label *labels = NULL;
+
+/* We wish to detect #n magic only in the first input argument;
+   this flag tracks when we have consumed the first file of input. */
+static bool first_script = true;
+
+/* Allow for scripts like "sed -e 'i\' -e foo": */
+static struct buffer *pending_text = NULL;
+static struct text_buf *old_text_buf = NULL;
+
+/* Information about block start positions.  This is used to backpatch
+   block end positions. */
+static struct sed_label *blocks = NULL;
+
+/* Use an obstack for compilation. */
+static struct obstack obs;
+
+/* Various error messages we may want to print */
+static const char errors[] =
+  "multiple `!'s\0"
+  "unexpected `,'\0"
+  "invalid usage of +N or ~N as first address\0"
+  "unmatched `{'\0"
+  "unexpected `}'\0"
+  "extra characters after command\0"
+  "expected \\ after `a', `c' or `i'\0"
+  "`}' doesn't want any addresses\0"
+  ": doesn't want any addresses\0"
+  "comments don't accept any addresses\0"
+  "missing command\0"
+  "command only uses one address\0"
+  "unterminated address regex\0"
+  "unterminated `s' command\0"
+  "unterminated `y' command\0"
+  "unknown option to `s'\0"
+  "multiple `p' options to `s' command\0"
+  "multiple `g' options to `s' command\0"
+  "multiple number options to `s' command\0"
+  "number option to `s' command may not be zero\0"
+  "strings for `y' command are different lengths\0"
+  "delimiter character is not a single-byte character\0"
+  "expected newer version of sed\0"
+  "invalid usage of line address 0\0"
+  "unknown command: `%c'";
+
+#define BAD_BANG (errors)
+#define BAD_COMMA (BAD_BANG + sizeof(N_("multiple `!'s")))
+#define BAD_STEP (BAD_COMMA + sizeof(N_("unexpected `,'")))
+#define EXCESS_OPEN_BRACE (BAD_STEP + sizeof(N_("invalid usage of +N or ~N as first address")))
+#define EXCESS_CLOSE_BRACE (EXCESS_OPEN_BRACE + sizeof(N_("unmatched `{'")))
+#define EXCESS_JUNK (EXCESS_CLOSE_BRACE + sizeof(N_("unexpected `}'")))
+#define EXPECTED_SLASH (EXCESS_JUNK + sizeof(N_("extra characters after command")))
+#define NO_CLOSE_BRACE_ADDR (EXPECTED_SLASH + sizeof(N_("expected \\ after `a', `c' or `i'")))
+#define NO_COLON_ADDR (NO_CLOSE_BRACE_ADDR + sizeof(N_("`}' doesn't want any addresses")))
+#define NO_SHARP_ADDR (NO_COLON_ADDR + sizeof(N_(": doesn't want any addresses")))
+#define NO_COMMAND (NO_SHARP_ADDR + sizeof(N_("comments don't accept any addresses")))
+#define ONE_ADDR (NO_COMMAND + sizeof(N_("missing command")))
+#define UNTERM_ADDR_RE (ONE_ADDR + sizeof(N_("command only uses one address")))
+#define UNTERM_S_CMD (UNTERM_ADDR_RE + sizeof(N_("unterminated address regex")))
+#define UNTERM_Y_CMD (UNTERM_S_CMD + sizeof(N_("unterminated `s' command")))
+#define UNKNOWN_S_OPT (UNTERM_Y_CMD + sizeof(N_("unterminated `y' command")))
+#define EXCESS_P_OPT (UNKNOWN_S_OPT + sizeof(N_("unknown option to `s'")))
+#define EXCESS_G_OPT (EXCESS_P_OPT + sizeof(N_("multiple `p' options to `s' command")))
+#define EXCESS_N_OPT (EXCESS_G_OPT + sizeof(N_("multiple `g' options to `s' command")))
+#define ZERO_N_OPT (EXCESS_N_OPT + sizeof(N_("multiple number options to `s' command")))
+#define Y_CMD_LEN (ZERO_N_OPT + sizeof(N_("number option to `s' command may not be zero")))
+#define BAD_DELIM (Y_CMD_LEN + sizeof(N_("strings for `y' command are different lengths")))
+#define ANCIENT_VERSION (BAD_DELIM + sizeof(N_("delimiter character is not a single-byte character")))
+#define INVALID_LINE_0 (ANCIENT_VERSION + sizeof(N_("expected newer version of sed")))
+#define UNKNOWN_CMD (INVALID_LINE_0 + sizeof(N_("invalid usage of line address 0")))
+#define END_ERRORS (UNKNOWN_CMD + sizeof(N_("unknown command: `%c'")))
+
+static struct output *file_read = NULL;
+static struct output *file_write = NULL;
+
+
+/* Complain about an unknown command and exit. */
+void
+bad_command(ch)
+  char ch;
+{
+  const char *msg = _(UNKNOWN_CMD);
+  char *unknown_cmd = xmalloc(strlen(msg));
+  sprintf(unknown_cmd, msg, ch);
+  bad_prog(unknown_cmd);
+}
+
+/* Complain about a programming error and exit. */
+void
+bad_prog(why)
+  const char *why;
+{
+  if (cur_input.name)
+    fprintf(stderr, _("%s: file %s line %lu: %s\n"),
+	    myname, cur_input.name, CAST(unsigned long)cur_input.line, why);
+  else
+    fprintf(stderr, _("%s: -e expression #%lu, char %lu: %s\n"),
+	    myname,
+	    CAST(unsigned long)cur_input.string_expr_count,
+	    CAST(unsigned long)(prog.cur-prog.base),
+	    why);
+  exit(EXIT_FAILURE);
+}
+
+
+/* Read the next character from the program.  Return EOF if there isn't
+   anything to read.  Keep cur_input.line up to date, so error messages
+   can be meaningful. */
+static int inchar P_((void));
+static int
+inchar()
+{
+  int ch = EOF;
+
+  if (prog.cur)
+    {
+      if (prog.cur < prog.end)
+	ch = *prog.cur++;
+    }
+  else if (prog.file)
+    {
+      if (!feof(prog.file))
+	ch = getc(prog.file);
+    }
+  if (ch == '\n')
+    ++cur_input.line;
+  return ch;
+}
+
+/* unget `ch' so the next call to inchar will return it.   */
+static void savchar P_((int ch));
+static void
+savchar(ch)
+  int ch;
+{
+  if (ch == EOF)
+    return;
+  if (ch == '\n' && cur_input.line > 0)
+    --cur_input.line;
+  if (prog.cur)
+    {
+      if (prog.cur <= prog.base || *--prog.cur != ch)
+	panic("Called savchar() with unexpected pushback (%x)",
+	      CAST(unsigned char)ch);
+    }
+  else
+    ungetc(ch, prog.file);
+}
+
+/* Read the next non-blank character from the program.  */
+static int in_nonblank P_((void));
+static int
+in_nonblank()
+{
+  int ch;
+  do
+    ch = inchar();
+    while (ISBLANK(ch));
+  return ch;
+}
+
+/* Read an integer value from the program.  */
+static countT in_integer P_((int ch));
+static countT
+in_integer(ch)
+  int ch;
+{
+  countT num = 0;
+
+  while (ISDIGIT(ch))
+    {
+      num = num * 10 + ch - '0';
+      ch = inchar();
+    }
+  savchar(ch);
+  return num;
+}
+
+static int add_then_next P_((struct buffer *b, int ch));
+static int
+add_then_next(b, ch)
+  struct buffer *b;
+  int ch;
+{
+  add1_buffer(b, ch);
+  return inchar();
+}
+
+static char * convert_number P_((char *, char *, const char *, int, int, int));
+static char *
+convert_number(result, buf, bufend, base, maxdigits, default_char)
+  char *result;
+  char *buf;
+  const char *bufend;
+  int base;
+  int maxdigits;
+  int default_char;
+{
+  int n = 0;
+  char *p;
+
+  for (p=buf; p < bufend && maxdigits-- > 0; ++p)
+    {
+      int d = -1;
+      switch (*p)
+	{
+	case '0': d = 0x0; break;
+	case '1': d = 0x1; break;
+	case '2': d = 0x2; break;
+	case '3': d = 0x3; break;
+	case '4': d = 0x4; break;
+	case '5': d = 0x5; break;
+	case '6': d = 0x6; break;
+	case '7': d = 0x7; break;
+	case '8': d = 0x8; break;
+	case '9': d = 0x9; break;
+	case 'A': case 'a': d = 0xa; break;
+	case 'B': case 'b': d = 0xb; break;
+	case 'C': case 'c': d = 0xc; break;
+	case 'D': case 'd': d = 0xd; break;
+	case 'E': case 'e': d = 0xe; break;
+	case 'F': case 'f': d = 0xf; break;
+	}
+      if (d < 0 || base <= d)
+	break;
+      n = n * base + d;
+    }
+  if (p == buf)
+    *result = default_char;
+  else
+    *result = n;
+  return p;
+}
+
+
+/* Read in a filename for a `r', `w', or `s///w' command. */
+static struct buffer *read_filename P_((void));
+static struct buffer *
+read_filename()
+{
+  struct buffer *b;
+  int ch;
+
+  b = init_buffer();
+  ch = in_nonblank();
+  while (ch != EOF && ch != '\n')
+    {
+#if 0 /*XXX ZZZ 1998-09-12 kpp: added, then had second thoughts*/
+      if (posixicity == POSIXLY_EXTENDED)
+	if (ch == ';' || ch == '#')
+	  {
+	    savchar(ch);
+	    break;
+	  }
+#endif
+      ch = add_then_next(b, ch);
+    }
+  add1_buffer(b, '\0');
+  return b;
+}
+
+static struct output *get_openfile P_((struct output **file_ptrs, char *mode, bool fail));
+static struct output *
+get_openfile(file_ptrs, mode, fail)
+     struct output **file_ptrs;
+     char *mode;
+     bool fail;
+{
+  struct buffer *b;
+  char *file_name;
+  struct output *p;
+  int is_stderr;
+
+  b = read_filename();
+  file_name = get_buffer(b);
+  for (p=*file_ptrs; p; p=p->link)
+    if (strcmp(p->name, file_name) == 0)
+      break;
+
+  if (posixicity == POSIXLY_EXTENDED)
+    {
+      /* Check whether it is a special file (stdin, stdout or stderr) */
+      struct special_files *special = special_files;
+		  
+      /* std* sometimes are not constants, so they
+         cannot be used in the initializer for special_files */
+#ifndef CONFIG_WITHOUT_O_OPT
+      my_stdin = stdin; my_stdout = sed_stdout; my_stderr = stderr;
+#else
+      my_stdin = stdin; my_stdout = stdout; my_stderr = stderr;
+#endif
+      for (special = special_files; special->outf.name; special++)
+        if (strcmp(special->outf.name, file_name) == 0)
+          {
+	    special->outf.fp = *special->pfp;
+	    free_buffer (b);
+	    return &special->outf;
+          }
+    }
+
+  if (!p)
+    {
+      p = OB_MALLOC(&obs, 1, struct output);
+      p->name = ck_strdup(file_name);
+      p->fp = ck_fopen(p->name, mode, fail);
+      p->missing_newline = false;
+      p->link = *file_ptrs;
+      *file_ptrs = p;
+    }
+  free_buffer(b);
+  return p;
+}
+
+
+static struct sed_cmd *next_cmd_entry P_((struct vector **vectorp));
+static struct sed_cmd *
+next_cmd_entry(vectorp)
+  struct vector **vectorp;
+{
+  struct sed_cmd *cmd;
+  struct vector *v;
+
+  v = *vectorp;
+  if (v->v_length == v->v_allocated)
+    {
+      v->v_allocated += VECTOR_ALLOC_INCREMENT;
+      v->v = REALLOC(v->v, v->v_allocated, struct sed_cmd);
+    }
+
+  cmd = v->v + v->v_length;
+  cmd->a1 = NULL;
+  cmd->a2 = NULL;
+  cmd->range_state = RANGE_INACTIVE;
+  cmd->addr_bang = false;
+  cmd->cmd = '\0';	/* something invalid, to catch bugs early */
+
+  *vectorp  = v;
+  return cmd;
+}
+
+static int snarf_char_class P_((struct buffer *b, mbstate_t *cur_stat));
+static int
+snarf_char_class(b, cur_stat)
+  struct buffer *b;
+  mbstate_t *cur_stat;
+{
+  int ch;
+  int state = 0;
+  int delim;
+  bool pending_mb = 0;
+  
+  ch = inchar();
+  if (ch == '^')
+    ch = add_then_next(b, ch);
+  if (ch == CLOSE_BRACKET)
+    ch = add_then_next(b, ch);
+  
+  /* States are:
+	0 outside a collation element, character class or collation class
+	1 after the bracket
+	2 after the opening ./:/=
+	3 after the closing ./:/= */
+
+  for (;; ch = add_then_next (b, ch))
+    {
+      pending_mb = BRLEN (ch, cur_stat) != 1;
+
+      switch (ch)
+	{
+	case EOF:
+	case '\n':
+	  return ch;
+
+	case '.':
+	case ':':
+	case '=':
+	  if (pending_mb)
+	    continue;
+
+	  if (state == 1)
+	    {
+	      delim = ch;
+	      state++;
+	    }
+	  else if (ch == delim && state == 2)
+	    state++;
+	  else
+	    break;
+
+	  continue;
+
+	case OPEN_BRACKET:
+	  if (pending_mb)
+	    continue;
+
+	  state++;
+	  continue;
+
+	case CLOSE_BRACKET:
+	  if (pending_mb)
+	    continue;
+
+	  if (state == 0 || state == 1)
+	    return ch;
+	  else if (state == 3)
+	    state = 0;
+
+	  break;
+
+	default:
+	  break;
+	}
+
+      /* Getting a character different from .=: whilst in state 1
+         goes back to state 0, getting a character different from ]
+         whilst in state 3 goes back to state 2.  */
+      state &= ~1;
+    }
+}
+
+static struct buffer *match_slash P_((int slash, bool regex));
+static struct buffer *
+match_slash(slash, regex)
+  int slash;
+  bool regex;
+{
+  struct buffer *b;
+  int ch;
+  bool pending_mb = false;
+  mbstate_t cur_stat;
+
+  memset (&cur_stat, 0, sizeof (mbstate_t));
+
+  if (BRLEN (slash, &cur_stat) == -2)
+  if (BRLEN (slash, &cur_stat) == -2)
+    bad_prog (BAD_DELIM);
+
+  memset (&cur_stat, 0, sizeof (mbstate_t));
+
+  b = init_buffer();
+  while ((ch = inchar()) != EOF && ch != '\n')
+    {
+      pending_mb = BRLEN (ch, &cur_stat) != 1;
+      pending_mb = BRLEN (ch, &cur_stat) != 1;
+
+      if (!pending_mb)
+	{
+	  if (ch == slash)
+	    return b;
+	  else if (ch == '\\')
+	    {
+	      ch = inchar();
+	      if (ch == EOF)
+	        break;
+#ifndef REG_PERL
+	      else if (ch == 'n' && regex)
+	        ch = '\n';
+#endif
+	      else if (ch != '\n' && ch != slash)
+	        add1_buffer(b, '\\');
+	    }
+          else if (ch == OPEN_BRACKET && regex)
+	    {
+	      add1_buffer(b, ch);
+	      ch = snarf_char_class(b, &cur_stat);
+	      if (ch != CLOSE_BRACKET)
+	        break;
+	    }
+	}
+
+      add1_buffer(b, ch);
+    }
+
+  if (ch == '\n')
+    savchar(ch);	/* for proper line number in error report */
+  free_buffer(b);
+  return NULL;
+}
+
+static int mark_subst_opts P_((struct subst *cmd));
+static int
+mark_subst_opts(cmd)
+  struct subst *cmd;
+{
+  int flags = 0;
+  int ch;
+
+  cmd->global = false;
+  cmd->print = false;
+  cmd->eval = false;
+  cmd->numb = 0;
+  cmd->outf = NULL;
+
+  for (;;)
+    switch ( (ch = in_nonblank()) )
+      {
+      case 'i':	/* GNU extension */
+      case 'I':	/* GNU extension */
+	flags |= REG_ICASE;
+	break;
+
+#ifdef REG_PERL
+      case 's':	/* GNU extension */
+      case 'S':	/* GNU extension */
+	if (extended_regexp_flags & REG_PERL)
+	  flags |= REG_DOTALL;
+	break;
+
+      case 'x':	/* GNU extension */
+      case 'X':	/* GNU extension */
+	if (extended_regexp_flags & REG_PERL)
+	  flags |= REG_EXTENDED;
+	break;
+#endif
+
+      case 'm':	/* GNU extension */
+      case 'M':	/* GNU extension */
+	flags |= REG_NEWLINE;
+	break;
+
+      case 'e':
+	cmd->eval = true;
+	break;
+
+      case 'p':
+	if (cmd->print)
+	  bad_prog(_(EXCESS_P_OPT));
+	cmd->print |= (1 << cmd->eval); /* 1=before eval, 2=after */
+	break;
+
+      case 'g':
+	if (cmd->global)
+	  bad_prog(_(EXCESS_G_OPT));
+	cmd->global = true;
+	break;
+
+      case 'w':
+	cmd->outf = get_openfile(&file_write, "w", true);
+	return flags;
+
+      case '0': case '1': case '2': case '3': case '4':
+      case '5': case '6': case '7': case '8': case '9':
+	if (cmd->numb)
+	  bad_prog(_(EXCESS_N_OPT));
+	cmd->numb = in_integer(ch);
+	if (!cmd->numb)
+	  bad_prog(_(ZERO_N_OPT));
+	break;
+
+      case CLOSE_BRACE:
+      case '#':
+	savchar(ch);
+	/* Fall Through */
+      case EOF:
+      case '\n':
+      case ';':
+	return flags;
+
+      case '\r':
+	if (inchar() == '\n')
+	  return flags;
+	/* FALLTHROUGH */
+
+      default:
+	bad_prog(_(UNKNOWN_S_OPT));
+	/*NOTREACHED*/
+      }
+}
+
+
+/* read in a label for a `:', `b', or `t' command */
+static char *read_label P_((void));
+static char *
+read_label()
+{
+  struct buffer *b;
+  int ch;
+  char *ret;
+
+  b = init_buffer();
+  ch = in_nonblank();
+
+  while (ch != EOF && ch != '\n'
+	 && !ISBLANK(ch) && ch != ';' && ch != CLOSE_BRACE && ch != '#')
+    ch = add_then_next (b, ch);
+
+  savchar(ch);
+  add1_buffer(b, '\0');
+  ret = ck_strdup(get_buffer(b));
+  free_buffer(b);
+  return ret;
+}
+
+/* Store a label (or label reference) created by a `:', `b', or `t'
+   command so that the jump to/from the label can be backpatched after
+   compilation is complete, or a reference created by a `{' to be
+   backpatched when the corresponding `}' is found.  */
+static struct sed_label *setup_label
+  P_((struct sed_label *, countT, char *, const struct error_info *));
+static struct sed_label *
+setup_label(list, idx, name, err_info)
+  struct sed_label *list;
+  countT idx;
+  char *name;
+  const struct error_info *err_info;
+{
+  struct sed_label *ret = OB_MALLOC(&obs, 1, struct sed_label);
+  ret->v_index = idx;
+  ret->name = name;
+  if (err_info)
+    MEMCPY(&ret->err_info, err_info, sizeof (ret->err_info));
+  ret->next = list;
+  return ret;
+}
+
+static struct sed_label *release_label P_((struct sed_label *list_head));
+static struct sed_label *
+release_label(list_head)
+  struct sed_label *list_head;
+{
+  struct sed_label *ret;
+
+  if (!list_head)
+    return NULL;
+  ret = list_head->next;
+
+  FREE(list_head->name);
+
+#if 0
+  /* We use obstacks */
+  FREE(list_head);
+#endif
+  return ret;
+}
+
+static struct replacement *new_replacement P_((char *, size_t,
+					       enum replacement_types));
+static struct replacement *
+new_replacement(text, length, type)
+  char *text;
+  size_t length;
+  enum replacement_types type;
+{
+  struct replacement *r = OB_MALLOC(&obs, 1, struct replacement);
+
+  r->prefix = text;
+  r->prefix_length = length;
+  r->subst_id = -1;
+  r->repl_type = type;
+
+  /* r-> next = NULL; */
+  return r;
+}
+
+static void setup_replacement P_((struct subst *, const char *, size_t));
+static void
+setup_replacement(sub, text, length)
+     struct subst *sub;
+     const char *text;
+     size_t length;
+{
+  char *base;
+  char *p;
+  char *text_end;
+  enum replacement_types repl_type = REPL_ASIS, save_type = REPL_ASIS;
+  struct replacement root;
+  struct replacement *tail;
+
+  sub->max_id = 0;
+  base = MEMDUP(text, length, char);
+  length = normalize_text(base, length, TEXT_REPLACEMENT);
+
+  text_end = base + length;
+  tail = &root;
+
+  for (p=base; p<text_end; ++p)
+    {
+      if (*p == '\\')
+	{
+	  /* Preceding the backslash may be some literal text: */
+	  tail = tail->next =
+	    new_replacement(base, CAST(size_t)(p - base), repl_type);
+
+	  repl_type = save_type;
+
+	  /* Skip the backslash and look for a numeric back-reference,
+	     or a case-munging escape if not in POSIX mode: */
+	  ++p;
+	  if (p < text_end && (posixicity != POSIXLY_BASIC || ISDIGIT (*p)))
+	    switch (*p)
+	      {
+	      case '0': case '1': case '2': case '3': case '4': 
+	      case '5': case '6': case '7': case '8': case '9': 
+		tail->subst_id = *p - '0';
+		if (sub->max_id < tail->subst_id)
+		  sub->max_id = tail->subst_id;
+		break;
+
+	      case 'L':
+		repl_type = REPL_LOWERCASE;
+		save_type = REPL_LOWERCASE;
+		break;
+
+	      case 'U':
+		repl_type = REPL_UPPERCASE;
+		save_type = REPL_UPPERCASE;
+		break;
+		
+	      case 'E':
+		repl_type = REPL_ASIS;
+		save_type = REPL_ASIS;
+		break;
+
+	      case 'l':
+		save_type = repl_type;
+		repl_type |= REPL_LOWERCASE_FIRST;
+		break;
+
+	      case 'u':
+		save_type = repl_type;
+		repl_type |= REPL_UPPERCASE_FIRST;
+		break;
+		
+	      default:
+		p[-1] = *p;
+		++tail->prefix_length;
+	      }
+
+	  base = p + 1;
+	}
+      else if (*p == '&')
+	{
+	  /* Preceding the ampersand may be some literal text: */
+	  tail = tail->next =
+	    new_replacement(base, CAST(size_t)(p - base), repl_type);
+
+	  repl_type = save_type;
+	  tail->subst_id = 0;
+	  base = p + 1;
+	}
+  }
+  /* There may be some trailing literal text: */
+  if (base < text_end)
+    tail = tail->next =
+      new_replacement(base, CAST(size_t)(text_end - base), repl_type);
+
+  tail->next = NULL;
+  sub->replacement = root.next;
+}
+
+static void read_text P_((struct text_buf *buf, int leadin_ch));
+static void
+read_text(buf, leadin_ch)
+  struct text_buf *buf;
+  int leadin_ch;
+{
+  int ch;
+
+  /* Should we start afresh (as opposed to continue a partial text)? */
+  if (buf)
+    {
+      if (pending_text)
+	free_buffer(pending_text);
+      pending_text = init_buffer();
+      buf->text = NULL;
+      buf->text_length = 0;
+      old_text_buf = buf;
+    }
+  /* assert(old_text_buf != NULL); */
+
+  if (leadin_ch == EOF)
+    return;
+
+  if (leadin_ch != '\n')
+    add1_buffer(pending_text, leadin_ch);
+
+  ch = inchar();
+  while (ch != EOF && ch != '\n')
+    {
+      if (ch == '\\')
+	{
+	  ch = inchar();
+	  if (ch != EOF)
+	    add1_buffer (pending_text, '\\');
+	}
+
+      if (ch == EOF)
+	{
+	  add1_buffer (pending_text, '\n');
+	  return;
+	}
+
+      ch = add_then_next (pending_text, ch);
+    }
+
+  add1_buffer(pending_text, '\n');
+  if (!buf)
+    buf = old_text_buf;
+  buf->text_length = normalize_text (get_buffer (pending_text),
+				     size_buffer (pending_text), TEXT_BUFFER);
+  buf->text = MEMDUP(get_buffer(pending_text), buf->text_length, char);
+  free_buffer(pending_text);
+  pending_text = NULL;
+}
+
+
+/* Try to read an address for a sed command.  If it succeeds,
+   return non-zero and store the resulting address in `*addr'.
+   If the input doesn't look like an address read nothing
+   and return zero.  */
+static bool compile_address P_((struct addr *addr, int ch));
+static bool
+compile_address(addr, ch)
+  struct addr *addr;
+  int ch;
+{
+  addr->addr_type = ADDR_IS_NULL;
+  addr->addr_step = 0;
+  addr->addr_number = ~(countT)0;  /* extremely unlikely to ever match */
+  addr->addr_regex = NULL;
+
+  if (ch == '/' || ch == '\\')
+    {
+      int flags = 0;
+      struct buffer *b;
+      addr->addr_type = ADDR_IS_REGEX;
+      if (ch == '\\')
+	ch = inchar();
+      if ( !(b = match_slash(ch, true)) )
+	bad_prog(_(UNTERM_ADDR_RE));
+
+      for(;;)
+	{
+	  ch = in_nonblank();
+          switch(ch)
+	    {
+	    case 'I':	/* GNU extension */
+	      flags |= REG_ICASE;
+	      break;
+
+#ifdef REG_PERL
+	    case 'S':	/* GNU extension */
+	      if (extended_regexp_flags & REG_PERL)
+		flags |= REG_DOTALL;
+	      break;
+
+	    case 'X':	/* GNU extension */
+	      if (extended_regexp_flags & REG_PERL)
+		flags |= REG_EXTENDED;
+	      break;
+#endif
+
+	    case 'M':	/* GNU extension */
+	      flags |= REG_NEWLINE;
+	      break;
+
+	    default:
+	      savchar (ch);
+	      addr->addr_regex = compile_regex (b, flags, 0);
+	      free_buffer(b);
+	      return true;
+	    }
+	}
+    }
+  else if (ISDIGIT(ch))
+    {
+      addr->addr_number = in_integer(ch);
+      addr->addr_type = ADDR_IS_NUM;
+      ch = in_nonblank();
+      if (ch != '~')
+	{
+	  savchar(ch);
+	}
+      else
+	{
+	  countT step = in_integer(in_nonblank());
+	  if (step > 0)
+	    {
+	      addr->addr_step = step;
+	      addr->addr_type = ADDR_IS_NUM_MOD;
+	    }
+	}
+    }
+  else if (ch == '+' || ch == '~')
+    {
+      addr->addr_step = in_integer(in_nonblank());
+      if (addr->addr_step==0)
+	; /* default to ADDR_IS_NULL; forces matching to stop on next line */
+      else if (ch == '+')
+	addr->addr_type = ADDR_IS_STEP;
+      else
+	addr->addr_type = ADDR_IS_STEP_MOD;
+    }
+  else if (ch == '$')
+    {
+      addr->addr_type = ADDR_IS_LAST;
+    }
+  else
+    return false;
+
+  return true;
+}
+
+/* Read a program (or a subprogram within `{' `}' pairs) in and store
+   the compiled form in `*vector'.  Return a pointer to the new vector.  */
+static struct vector *compile_program P_((struct vector *));
+static struct vector *
+compile_program(vector)
+  struct vector *vector;
+{
+  struct sed_cmd *cur_cmd;
+  struct buffer *b;
+  int ch;
+
+  if (!vector)
+    {
+      vector = MALLOC(1, struct vector);
+      vector->v = NULL;
+      vector->v_allocated = 0;
+      vector->v_length = 0;
+
+      obstack_init (&obs);
+    }
+  if (pending_text)
+    read_text(NULL, '\n');
+
+  for (;;)
+    {
+      struct addr a;
+
+      while ((ch=inchar()) == ';' || ISSPACE(ch))
+	;
+      if (ch == EOF)
+	break;
+
+      cur_cmd = next_cmd_entry(&vector);
+      if (compile_address(&a, ch))
+	{
+	  if (a.addr_type == ADDR_IS_STEP
+	      || a.addr_type == ADDR_IS_STEP_MOD)
+	    bad_prog(_(BAD_STEP));
+
+	  cur_cmd->a1 = MEMDUP(&a, 1, struct addr);
+	  ch = in_nonblank();
+	  if (ch == ',')
+	    {
+	      if (!compile_address(&a, in_nonblank()))
+		bad_prog(_(BAD_COMMA));
+
+	      cur_cmd->a2 = MEMDUP(&a, 1, struct addr);
+	      ch = in_nonblank();
+	    }
+
+	  if (cur_cmd->a1->addr_type == ADDR_IS_NUM
+	      && cur_cmd->a1->addr_number == 0
+	      && (!cur_cmd->a2 || cur_cmd->a2->addr_type != ADDR_IS_REGEX))
+	    bad_prog(_(INVALID_LINE_0));
+	}
+      if (ch == '!')
+	{
+	  cur_cmd->addr_bang = true;
+	  ch = in_nonblank();
+	  if (ch == '!')
+	    bad_prog(_(BAD_BANG));
+	}
+
+      /* Do not accept extended commands in --posix mode.  Also,
+	 a few commands only accept one address in that mode.  */
+      if (posixicity == POSIXLY_BASIC)
+	switch (ch)
+	  {
+	    case 'v': case 'L': case 'Q': case 'T':
+	    case 'R': case 'W':
+	      bad_command(ch);
+
+	    case 'a': case 'i': case 'l':
+	    case '=': case 'r':
+	      if (cur_cmd->a2)
+	        bad_prog(_(ONE_ADDR));
+	  }
+
+      cur_cmd->cmd = ch;
+      switch (ch)
+	{
+	case '#':
+	  if (cur_cmd->a1)
+	    bad_prog(_(NO_SHARP_ADDR));
+	  ch = inchar();
+	  if (ch=='n' && first_script && cur_input.line < 2)
+	    if (   (prog.base && prog.cur==2+prog.base)
+		|| (prog.file && !prog.base && 2==ftell(prog.file)))
+	      no_default_output = true;
+	  while (ch != EOF && ch != '\n')
+	    ch = inchar();
+	  continue;	/* restart the for (;;) loop */
+
+	case 'v':
+	  /* This is an extension.  Programs needing GNU sed might start
+	   * with a `v' command so that other seds will stop.
+	   * We compare the version and ignore POSIXLY_CORRECT.
+	   */
+	  {
+	    char *version = read_label ();
+	    char *compared_version;
+	    compared_version = (*version == '\0') ? "4.0" : version;
+	    if (strverscmp (compared_version, SED_FEATURE_VERSION) > 0)
+	      bad_prog(_(ANCIENT_VERSION));
+
+	    free (version);
+	    posixicity = POSIXLY_EXTENDED;
+	  }
+	  continue;
+
+	case '{':
+	  blocks = setup_label(blocks, vector->v_length, NULL, &cur_input);
+	  cur_cmd->addr_bang = !cur_cmd->addr_bang;
+	  break;
+
+	case '}':
+	  if (!blocks)
+	    bad_prog(_(EXCESS_CLOSE_BRACE));
+	  if (cur_cmd->a1)
+	    bad_prog(_(NO_CLOSE_BRACE_ADDR));
+	  ch = in_nonblank();
+	  if (ch == CLOSE_BRACE || ch == '#')
+	    savchar(ch);
+	  else if (ch != EOF && ch != '\n' && ch != ';')
+	    bad_prog(_(EXCESS_JUNK));
+
+	  vector->v[blocks->v_index].x.jump_index = vector->v_length;
+	  blocks = release_label(blocks);	/* done with this entry */
+	  break;
+
+	case 'e':
+	  ch = in_nonblank();
+	  if (ch == EOF || ch == '\n')
+	    {
+	      cur_cmd->x.cmd_txt.text_length = 0;
+	      break;
+	    }
+	  else
+	    goto read_text_to_slash;
+
+	case 'a':
+	case 'i':
+	case 'c':
+	  ch = in_nonblank();
+
+	read_text_to_slash:
+	  if (ch == EOF)
+	    bad_prog(_(EXPECTED_SLASH));
+	      
+	  if (ch == '\\')
+	    ch = inchar();
+	  else
+	    {
+	      savchar(ch);
+	      ch = '\n';
+	    }
+
+	  read_text(&cur_cmd->x.cmd_txt, ch);
+	  break;
+
+	case ':':
+	  if (cur_cmd->a1)
+	    bad_prog(_(NO_COLON_ADDR));
+	  labels = setup_label(labels, vector->v_length, read_label(), NULL);
+	  break;
+	
+	case 'T':
+	case 'b':
+	case 't':
+	  jumps = setup_label(jumps, vector->v_length, read_label(), NULL);
+	  break;
+
+	case 'Q':
+	case 'q':
+	  if (cur_cmd->a2)
+	    bad_prog(_(ONE_ADDR));
+	  /* Fall through */
+
+	case 'L':
+	case 'l':
+	  ch = in_nonblank();
+	  if (ISDIGIT(ch)) 
+	    {
+	      cur_cmd->x.int_arg = in_integer(ch);
+	      ch = in_nonblank();
+	    }
+	  else
+	    cur_cmd->x.int_arg = -1;
+
+	  if (ch == CLOSE_BRACE || ch == '#')
+	    savchar(ch);
+	  else if (ch != EOF && ch != '\n' && ch != ';')
+	    bad_prog(_(EXCESS_JUNK));
+
+	  break;
+
+	case '=':
+	case 'd':
+	case 'D':
+	case 'g':
+	case 'G':
+	case 'h':
+	case 'H':
+	case 'n':
+	case 'N':
+	case 'p':
+	case 'P':
+	case 'x':
+	  ch = in_nonblank();
+	  if (ch == CLOSE_BRACE || ch == '#')
+	    savchar(ch);
+	  else if (ch != EOF && ch != '\n' && ch != ';')
+	    bad_prog(_(EXCESS_JUNK));
+	  break;
+
+	case 'r':
+	  b = read_filename();
+	  cur_cmd->x.fname = ck_strdup(get_buffer(b));
+	  free_buffer(b);
+	  break;
+
+        case 'R':
+	  cur_cmd->x.fp = get_openfile(&file_read, "r", false)->fp;
+	  break;
+
+        case 'W':
+	case 'w':
+	  cur_cmd->x.outf = get_openfile(&file_write, "w", true);
+	  break;
+
+	case 's':
+	  {
+	    struct buffer *b2;
+	    int flags;
+	    int slash;
+
+	    slash = inchar();
+	    if ( !(b  = match_slash(slash, true)) )
+	      bad_prog(_(UNTERM_S_CMD));
+	    if ( !(b2 = match_slash(slash, false)) )
+	      bad_prog(_(UNTERM_S_CMD));
+
+	    cur_cmd->x.cmd_subst = OB_MALLOC(&obs, 1, struct subst);
+	    setup_replacement(cur_cmd->x.cmd_subst,
+			      get_buffer(b2), size_buffer(b2));
+	    free_buffer(b2);
+
+	    flags = mark_subst_opts(cur_cmd->x.cmd_subst);
+	    cur_cmd->x.cmd_subst->regx =
+	      compile_regex(b, flags, cur_cmd->x.cmd_subst->max_id + 1);
+	    free_buffer(b);
+	  }
+	  break;
+
+	case 'y':
+	  {
+	    size_t len, dest_len;
+	    int slash;
+	    struct buffer *b2;
+            char *src_buf, *dest_buf;
+  
+	    slash = inchar();
+	    if ( !(b = match_slash(slash, false)) )
+	      bad_prog(_(UNTERM_Y_CMD));
+            src_buf = get_buffer(b);
+	    len = normalize_text(src_buf, size_buffer (b), TEXT_BUFFER);
+
+            if ( !(b2 = match_slash(slash, false)) )
+ 	      bad_prog(_(UNTERM_Y_CMD));
+            dest_buf = get_buffer(b2);
+	    dest_len = normalize_text(dest_buf, size_buffer (b2), TEXT_BUFFER);
+
+            if (mb_cur_max > 1)
+	      {
+                int i, j, idx, src_char_num;
+                size_t *src_lens = MALLOC(len, size_t);
+                char **trans_pairs;
+                size_t mbclen;
+                mbstate_t cur_stat;
+
+                /* Enumerate how many character the source buffer has.  */
+                memset(&cur_stat, 0, sizeof(mbstate_t));
+                for (i = 0, j = 0; i < len;)
+                  {
+                    mbclen = MBRLEN (src_buf + i, len - i, &cur_stat);
+                    /* An invalid sequence, or a truncated multibyte character.
+                       We treat it as a singlebyte character.  */
+                    if (mbclen == (size_t) -1 || mbclen == (size_t) -2
+                        || mbclen == 0)
+                      mbclen = 1;
+                    src_lens[j++] = mbclen;
+                    i += mbclen;
+                  }
+                src_char_num = j;
+
+                memset(&cur_stat, 0, sizeof(mbstate_t));
+                idx = 0;
+
+                /* trans_pairs = {src(0), dest(0), src(1), dest(1), ..., NULL}
+                     src(i) : pointer to i-th source character.
+                     dest(i) : pointer to i-th destination character.
+                     NULL : terminator */
+                trans_pairs = MALLOC(2 * src_char_num + 1, char*);
+                cur_cmd->x.translatemb = trans_pairs;
+                for (i = 0; i < src_char_num; i++)
+                  {
+                    if (idx >= dest_len)
+                      bad_prog(_(Y_CMD_LEN));
+
+                    /* Set the i-th source character.  */
+                    trans_pairs[2 * i] = MALLOC(src_lens[i] + 1, char);
+                    strncpy(trans_pairs[2 * i], src_buf, src_lens[i]);
+                    trans_pairs[2 * i][src_lens[i]] = '\0';
+                    src_buf += src_lens[i]; /* Forward to next character.  */
+
+                    /* Fetch the i-th destination character.  */
+                    mbclen = MBRLEN (dest_buf + idx, dest_len - idx, &cur_stat);
+                    /* An invalid sequence, or a truncated multibyte character.
+                       We treat it as a singlebyte character.  */
+                    if (mbclen == (size_t) -1 || mbclen == (size_t) -2
+                        || mbclen == 0)
+                      mbclen = 1;
+
+                    /* Set the i-th destination character.  */
+                    trans_pairs[2 * i + 1] = MALLOC(mbclen + 1, char);
+                    strncpy(trans_pairs[2 * i + 1], dest_buf + idx, mbclen);
+                    trans_pairs[2 * i + 1][mbclen] = '\0';
+                    idx += mbclen; /* Forward to next character.  */
+                  }
+                trans_pairs[2 * i] = NULL;
+                if (idx != dest_len)
+                  bad_prog(_(Y_CMD_LEN));
+              }
+            else
+              {
+	        char *translate = OB_MALLOC(&obs, YMAP_LENGTH, char);
+                unsigned char *ustring = CAST(unsigned char *)src_buf;
+
+		if (len != dest_len)
+                  bad_prog(_(Y_CMD_LEN));
+
+	        for (len = 0; len < YMAP_LENGTH; len++)
+	          translate[len] = len;
+
+                while (dest_len--)
+                  translate[(unsigned char)*ustring++] = *dest_buf++;
+
+	        cur_cmd->x.translate = translate;
+	      }
+
+            if ((ch = in_nonblank()) != EOF && ch != '\n' && ch != ';')
+              bad_prog(_(EXCESS_JUNK));
+
+            free_buffer(b);
+            free_buffer(b2);
+	  }
+	break;
+
+	case EOF:
+	  bad_prog(_(NO_COMMAND));
+	  /*NOTREACHED*/
+
+	default:
+	  bad_command (ch);
+	  /*NOTREACHED*/
+	}
+
+      /* this is buried down here so that "continue" statements will miss it */
+      ++vector->v_length;
+    }
+  return vector;
+}
+
+
+/* deal with \X escapes */
+size_t
+normalize_text(buf, len, buftype)
+  char *buf;
+  size_t len;
+  enum text_types buftype;
+{
+  const char *bufend = buf + len;
+  char *p = buf;
+  char *q = buf;
+
+  /* This variable prevents normalizing text within bracket
+     subexpressions when conforming to POSIX.  If 0, we
+     are not within a bracket expression.  If -1, we are within a
+     bracket expression but are not within [.FOO.], [=FOO=],
+     or [:FOO:].  Otherwise, this is the '.', '=', or ':'
+     respectively within these three types of subexpressions.  */
+  int bracket_state = 0;
+
+  int mbclen;
+  mbstate_t cur_stat;
+  memset(&cur_stat, 0, sizeof(mbstate_t));
+
+  while (p < bufend)
+    {
+      int c;
+      mbclen = MBRLEN (p, bufend - p, &cur_stat);
+      if (mbclen != 1)
+	{
+          /* An invalid sequence, or a truncated multibyte character.
+             We treat it as a singlebyte character.  */
+          if (mbclen == (size_t) -1 || mbclen == (size_t) -2 || mbclen == 0)
+            mbclen = 1;
+
+          memmove (q, p, mbclen);
+          q += mbclen;
+          p += mbclen;
+	  continue;
+	}
+
+      if (*p == '\\' && p+1 < bufend && bracket_state == 0)
+	switch ( (c = *++p) )
+	  {
+#if defined __STDC__ && __STDC__-0
+	  case 'a': *q++ = '\a'; p++; continue;
+#else /* Not STDC; we'll just assume ASCII */
+	  case 'a': *q++ = '\007'; p++; continue;
+#endif
+	  /* case 'b': *q++ = '\b'; p++; continue; --- conflicts with \b RE */
+	  case 'f': *q++ = '\f'; p++; continue;
+	  case '\n': /*fall through */
+	  case 'n': *q++ = '\n'; p++; continue;
+	  case 'r': *q++ = '\r'; p++; continue;
+	  case 't': *q++ = '\t'; p++; continue;
+	  case 'v': *q++ = '\v'; p++; continue;
+
+	  case 'd': /* decimal byte */
+	    p = convert_number(q, p+1, bufend, 10, 3, 'd');
+	    q++;
+	    continue;
+
+	  case 'x': /* hexadecimal byte */
+	    p = convert_number(q, p+1, bufend, 16, 2, 'x');
+	    q++;
+	    continue;
+
+#ifdef REG_PERL
+	  case '0': case '1': case '2': case '3':
+	  case '4': case '5': case '6': case '7':
+	    if ((extended_regexp_flags & REG_PERL)
+		&& p+1 < bufend
+		&& p[1] >= '0' && p[1] <= '9')
+	      {
+		p = convert_number(q, p, bufend, 8, 3, *p);
+		q++;
+	      }
+	    else
+	      {
+		/* we just pass the \ up one level for interpretation */
+	        if (buftype != TEXT_BUFFER)
+		  *q++ = '\\';
+	      }
+
+	    continue;
+
+	  case 'o': /* octal byte */
+	    if (!(extended_regexp_flags & REG_PERL))
+	      {
+	        p = convert_number(q, p+1, bufend,  8, 3, 'o');
+		q++;
+	      }
+	    else
+	      {
+	        /* we just pass the \ up one level for interpretation */
+	        if (buftype != TEXT_BUFFER)
+		  *q++ = '\\';
+	      }
+	    
+	    continue;
+#else
+	  case 'o': /* octal byte */
+	    p = convert_number(q, p+1, bufend,  8, 3, 'o');
+	    q++;
+	    continue;
+#endif
+
+	  case 'c':
+	    if (++p < bufend)
+	      {
+		*q++ = toupper(*p) ^ 0x40;
+		p++;
+		continue;
+	      }
+	    else
+	      {
+	        /* we just pass the \ up one level for interpretation */
+	        if (buftype != TEXT_BUFFER)
+		  *q++ = '\\';
+	        continue;
+	      }
+
+	  default:
+	    /* we just pass the \ up one level for interpretation */
+	    if (buftype != TEXT_BUFFER)
+	      *q++ = '\\';
+	    break;
+	  }
+      else if (buftype == TEXT_REGEX && posixicity != POSIXLY_EXTENDED)
+        switch (*p)
+          {
+          case '[':
+            if (!bracket_state)
+              bracket_state = -1;
+            break;
+ 
+	  case ':':
+	  case '.':
+	  case '=':
+            if (bracket_state == -1 && p[-1] == '[')
+              bracket_state = *p;
+            break;
+
+          case ']':
+            if (bracket_state == 0)
+	      ;
+            else if (bracket_state == -1)
+              bracket_state = 0;
+            else if (p[-2] != bracket_state && p[-1] == bracket_state)
+              bracket_state = -1;
+            break;
+          }
+
+      *q++ = *p++;
+    }
+    return (size_t)(q - buf);
+}
+
+
+/* `str' is a string (from the command line) that contains a sed command.
+   Compile the command, and add it to the end of `cur_program'. */
+struct vector *
+compile_string(cur_program, str, len)
+  struct vector *cur_program;
+  char *str;
+  size_t len;
+{
+  static countT string_expr_count = 0;
+  struct vector *ret;
+
+  prog.file = NULL;
+  prog.base = CAST(unsigned char *)str;
+  prog.cur = prog.base;
+  prog.end = prog.cur + len;
+
+  cur_input.line = 0;
+  cur_input.name = NULL;
+  cur_input.string_expr_count = ++string_expr_count;
+
+  ret = compile_program(cur_program);
+  prog.base = NULL;
+  prog.cur = NULL;
+  prog.end = NULL;
+
+  first_script = false;
+  return ret;
+}
+
+/* `cmdfile' is the name of a file containing sed commands.
+   Read them in and add them to the end of `cur_program'.
+ */
+struct vector *
+compile_file(cur_program, cmdfile)
+  struct vector *cur_program;
+  const char *cmdfile;
+{
+  size_t len;
+  struct vector *ret;
+
+  prog.file = stdin;
+  if (cmdfile[0] != '-' || cmdfile[1] != '\0')
+    prog.file = ck_fopen(cmdfile, "rt", true);
+
+  cur_input.line = 1;
+  cur_input.name = cmdfile;
+  cur_input.string_expr_count = 0;
+
+  ret = compile_program(cur_program);
+  if (prog.file != stdin)
+    ck_fclose(prog.file);
+  prog.file = NULL;
+
+  first_script = false;
+  return ret;
+}
+
+/* Make any checks which require the whole program to have been read.
+   In particular: this backpatches the jump targets.
+   Any cleanup which can be done after these checks is done here also.  */
+void
+check_final_program(program)
+  struct vector *program;
+{
+  struct sed_label *go;
+  struct sed_label *lbl;
+
+  /* do all "{"s have a corresponding "}"? */
+  if (blocks)
+    {
+      /* update info for error reporting: */
+      MEMCPY(&cur_input, &blocks->err_info, sizeof (cur_input));
+      bad_prog(_(EXCESS_OPEN_BRACE));
+    }
+
+  /* was the final command an unterminated a/c/i command? */
+  if (pending_text)
+    {
+      old_text_buf->text_length = size_buffer(pending_text);
+      old_text_buf->text = MEMDUP(get_buffer(pending_text),
+				  old_text_buf->text_length, char);
+      free_buffer(pending_text);
+      pending_text = NULL;
+    }
+
+  for (go = jumps; go; go = release_label(go))
+    {
+      for (lbl = labels; lbl; lbl = lbl->next)
+	if (strcmp(lbl->name, go->name) == 0)
+	  break;
+      if (lbl)
+	{
+	  program->v[go->v_index].x.jump_index = lbl->v_index;
+	}
+      else
+	{
+	  if (*go->name)
+	    panic(_("can't find label for jump to `%s'"), go->name);
+	  program->v[go->v_index].x.jump_index = program->v_length;
+	}
+    }
+  jumps = NULL;
+
+  for (lbl = labels; lbl; lbl = release_label(lbl))
+    ;
+  labels = NULL;
+
+  /* There is no longer a need to track file names: */
+  {
+    struct output *p;
+
+    for (p=file_read; p; p=p->link)
+      if (p->name)
+	{
+	  FREE(p->name);
+	  p->name = NULL;
+	}
+
+    for (p=file_write; p; p=p->link)
+      if (p->name)
+	{
+	  FREE(p->name);
+	  p->name = NULL;
+	}
+  }
+}
+
+/* Rewind all resources which were allocated in this module. */
+void
+rewind_read_files()
+{
+  struct output *p;
+
+  for (p=file_read; p; p=p->link)
+    if (p->fp)
+      rewind(p->fp);
+}
+
+/* Release all resources which were allocated in this module. */
+void
+finish_program(program)
+  struct vector *program;
+{
+  /* close all files... */
+  {
+    struct output *p, *q;
+
+    for (p=file_read; p; p=q)
+      {
+	if (p->fp)
+	  ck_fclose(p->fp);
+	q = p->link;
+#if 0
+	/* We use obstacks. */
+	FREE(p);
+#endif
+      }
+
+    for (p=file_write; p; p=q)
+      {
+	if (p->fp)
+	  ck_fclose(p->fp);
+	q = p->link;
+#if 0
+	/* We use obstacks. */
+	FREE(p);
+#endif
+      }
+    file_read = file_write = NULL;
+  }
+
+#ifdef DEBUG_LEAKS
+  obstack_free (&obs, NULL);
+#endif /*DEBUG_LEAKS*/
+}
diff --git a/src/sed/sed/execute.c b/src/sed/sed/execute.c
new file mode 100644
index 0000000..c9038f4
--- /dev/null
+++ b/src/sed/sed/execute.c
@@ -0,0 +1,1759 @@
+/*  GNU SED, a batch stream editor.
+    Copyright (C) 1989,90,91,92,93,94,95,98,99,2002,2003,2004,2005,2006
+    Free Software Foundation, Inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2, or (at your option)
+    any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#undef EXPERIMENTAL_DASH_N_OPTIMIZATION	/*don't use -- is very buggy*/
+#define INITIAL_BUFFER_SIZE	50
+#define FREAD_BUFFER_SIZE	8192
+
+#include "sed.h"
+
+#include <stdio.h>
+#include <ctype.h>
+
+#include <errno.h>
+#ifndef errno
+extern int errno;
+#endif
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#ifdef __GNUC__
+# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__-0 >= 7)
+   /* silence warning about unused parameter even for "gcc -W -Wunused" */
+#  define UNUSED	__attribute__((unused))
+# endif
+#endif
+#ifndef UNUSED
+# define UNUSED
+#endif
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#else
+# include <string.h>
+#endif /*HAVE_STRINGS_H*/
+#ifdef HAVE_MEMORY_H
+# include <memory.h>
+#endif
+
+#ifndef HAVE_STRCHR
+# define strchr index
+# define strrchr rindex
+#endif
+
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+#ifndef EXIT_SUCCESS
+# define EXIT_SUCCESS 0
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#include <sys/stat.h>
+
+
+/* Sed operates a line at a time. */
+struct line {
+  char *text;		/* Pointer to line allocated by malloc. */
+  char *active;		/* Pointer to non-consumed part of text. */
+  size_t length;	/* Length of text (or active, if used). */
+  size_t alloc;		/* Allocated space for active. */
+  bool chomped;		/* Was a trailing newline dropped? */
+#ifdef HAVE_MBRTOWC
+  mbstate_t mbstate;
+#endif
+};
+
+/* A queue of text to write out at the end of a cycle
+   (filled by the "a", "r" and "R" commands.) */
+struct append_queue {
+  const char *fname;
+  char *text;
+  size_t textlen;
+  struct append_queue *next;
+  bool free;
+};
+
+/* State information for the input stream. */
+struct input {
+  /* The list of yet-to-be-opened files.  It is invalid for file_list
+     to be NULL.  When *file_list is NULL we are currently processing
+     the last file.  */
+
+  char **file_list;
+
+  /* Count of files we failed to open. */
+  countT bad_count;	    
+
+  /* Current input line number (over all files).  */
+  countT line_number;	    
+
+  /* True if we'll reset line numbers and addresses before
+     starting to process the next (possibly the first) file.  */
+  bool reset_at_next_file;
+
+  /* Function to read one line.  If FP is NULL, read_fn better not
+     be one which uses fp; in particular, read_always_fail() is
+     recommended. */
+  bool (*read_fn) P_((struct input *));	/* read one line */
+
+  char *out_file_name;
+
+  const char *in_file_name;
+
+  /* if NULL, none of the following are valid */
+  FILE *fp;
+
+  bool no_buffering;
+};
+
+
+/* Have we done any replacements lately?  This is used by the `t' command. */
+static bool replaced = false;
+
+/* The current output file (stdout if -i is not being used. */
+static struct output output_file;
+
+/* The `current' input line. */
+static struct line line;
+
+/* An input line used to accumulate the result of the s and e commands. */
+static struct line s_accum;
+
+/* An input line that's been stored by later use by the program */
+static struct line hold;
+
+/* The buffered input look-ahead.  The only field that should be
+   used outside of read_mem_line() or line_init() is buffer.length. */
+static struct line buffer;
+
+static struct append_queue *append_head = NULL;
+static struct append_queue *append_tail = NULL;
+
+
+#ifdef BOOTSTRAP
+/* We can't be sure that the system we're boostrapping on has
+   memchr(), and ../lib/memchr.c requires configuration knowledge
+   about how many bits are in a `long'.  This implementation
+   is far from ideal, but it should get us up-and-limping well
+   enough to run the configure script, which is all that matters.
+*/
+# ifdef memchr
+#  undef memchr
+# endif
+# define memchr bootstrap_memchr
+
+static VOID *bootstrap_memchr P_((const VOID *s, int c, size_t n));
+static VOID *
+bootstrap_memchr(s, c, n)
+  const VOID *s;
+  int c;
+  size_t n;
+{
+  char *p;
+
+  for (p=(char *)s; n-- > 0; ++p)
+    if (*p == c)
+      return p;
+  return CAST(VOID *)0;
+}
+#endif /*BOOTSTRAP*/
+
+/* increase a struct line's length, making some attempt at
+   keeping realloc() calls under control by padding for future growth.  */
+static void resize_line P_((struct line *, size_t));
+static void
+resize_line(lb, len)
+  struct line *lb;
+  size_t len;
+{
+  int inactive;
+  inactive = lb->active - lb->text;
+
+  /* If the inactive part has got to more than two thirds of the buffer,
+   * remove it. */
+  if (inactive > lb->alloc * 2)
+    {
+      MEMMOVE(lb->text, lb->active, lb->length);
+      lb->alloc += lb->active - lb->text;
+      lb->active = lb->text;
+      inactive = 0;
+
+      if (lb->alloc > len)
+	return;
+    }
+
+  lb->alloc *= 2;
+  if (lb->alloc < len)
+    lb->alloc = len;
+  if (lb->alloc < INITIAL_BUFFER_SIZE)
+    lb->alloc = INITIAL_BUFFER_SIZE;
+    
+  lb->text = REALLOC(lb->text, inactive + lb->alloc, char);
+  lb->active = lb->text + inactive;
+}
+
+/* Append `length' bytes from `string' to the line `to'. */
+static void str_append P_((struct line *, const char *, size_t));
+static void
+str_append(to, string, length)
+  struct line *to;
+  const char *string;
+  size_t length;
+{
+  size_t new_length = to->length + length;
+
+  if (to->alloc < new_length)
+    resize_line(to, new_length);
+  MEMCPY(to->active + to->length, string, length);
+  to->length = new_length;
+
+#ifdef HAVE_MBRTOWC
+  if (mb_cur_max == 1)
+    return;
+
+  while (length)
+    {
+      int n = MBRLEN (string, length, &to->mbstate);
+
+      /* An invalid sequence is treated like a singlebyte character. */
+      if (n == -1)
+	{
+	  memset (&to->mbstate, 0, sizeof (to->mbstate));
+	  n = 1;
+	}
+
+      if (n > 0)
+	length -= n;
+      else
+	break;
+    }
+#endif
+}
+
+static void str_append_modified P_((struct line *, const char *, size_t,
+				    enum replacement_types));
+static void
+str_append_modified(to, string, length, type)
+  struct line *to;
+  const char *string;
+  size_t length;
+  enum replacement_types type;
+{
+  size_t old_length = to->length;
+  char *start, *end;
+
+  if (length == 0)
+    return;
+
+#ifdef HAVE_MBRTOWC
+  {
+    mbstate_t from_stat;
+
+    if (type == REPL_ASIS)
+      {
+	str_append(to, string, length);
+        return;
+      }
+
+    if (to->alloc - to->length < length * mb_cur_max)
+      resize_line(to, to->length + length * mb_cur_max);
+
+    MEMCPY (&from_stat, &to->mbstate, sizeof(mbstate_t));
+    while (length)
+      {
+	wchar_t wc;
+        int n = MBRTOWC (&wc, string, length, &from_stat);
+
+        /* An invalid sequence is treated like a singlebyte character. */
+        if (n == -1)
+          {
+            memset (&to->mbstate, 0, sizeof (from_stat));
+            n = 1;
+          }
+
+        if (n > 0)
+          string += n, length -= n;
+        else
+	  {
+	    /* Incomplete sequence, copy it manually.  */
+	    str_append(to, string, length);
+	    return;
+	  }
+
+	/* Convert the first character specially... */
+        if (type & (REPL_UPPERCASE_FIRST | REPL_LOWERCASE_FIRST))
+	  {
+            if (type & REPL_UPPERCASE_FIRST)
+              wc = towupper(wc);
+            else
+              wc = towlower(wc);
+
+            type &= ~(REPL_LOWERCASE_FIRST | REPL_UPPERCASE_FIRST);
+	    if (type == REPL_ASIS)
+	      {
+		n = WCRTOMB (to->active + to->length, wc, &to->mbstate);
+		to->length += n;
+		str_append(to, string, length);
+	        return;
+	      }
+          }
+
+        else if (type & REPL_UPPERCASE)
+          wc = towupper(wc);
+        else
+          wc = towlower(wc);
+
+	/* Copy the new wide character to the end of the string. */
+	n = WCRTOMB (to->active + to->length, wc, &to->mbstate);
+        to->length += n;
+	if (n == -1)
+	  {
+	    fprintf (stderr, "Case conversion produced an invalid character!");
+	    abort ();
+	  }
+      }
+  }
+#else
+  str_append(to, string, length);
+  start = to->active + old_length;
+  end = start + length;
+
+  /* Now do the required modifications.  First \[lu]... */
+  if (type & REPL_UPPERCASE_FIRST)
+    {
+      *start = toupper(*start);
+      start++;
+      type &= ~REPL_UPPERCASE_FIRST;
+    }
+  else if (type & REPL_LOWERCASE_FIRST)
+    {
+      *start = tolower(*start);
+      start++;
+      type &= ~REPL_LOWERCASE_FIRST;
+    }
+
+  if (type == REPL_ASIS)
+    return;
+
+  /* ...and then \[LU] */
+  if (type == REPL_UPPERCASE)
+    for (; start != end; start++)
+      *start = toupper(*start);
+  else
+    for (; start != end; start++)
+      *start = tolower(*start);
+#endif
+}
+
+/* initialize a "struct line" buffer */
+static void line_init P_((struct line *, size_t initial_size));
+static void
+line_init(buf, initial_size)
+  struct line *buf;
+  size_t initial_size;
+{
+  buf->text = MALLOC(initial_size, char);
+  buf->active = buf->text;
+  buf->alloc = initial_size;
+  buf->length = 0;
+  buf->chomped = true;
+
+#ifdef HAVE_MBRTOWC
+  memset (&buf->mbstate, 0, sizeof (buf->mbstate));
+#endif
+
+}
+
+/* Copy the contents of the line `from' into the line `to'.
+   This destroys the old contents of `to'. */
+static void line_copy P_((struct line *from, struct line *to));
+static void
+line_copy(from, to)
+  struct line *from;
+  struct line *to;
+{
+  /* Remove the inactive portion in the destination buffer. */
+  to->alloc += to->active - to->text;
+
+  if (to->alloc < from->length)
+    {
+      to->alloc *= 2;
+      if (to->alloc < from->length)
+	to->alloc = from->length;
+      if (to->alloc < INITIAL_BUFFER_SIZE)
+	to->alloc = INITIAL_BUFFER_SIZE;
+      /* Use FREE()+MALLOC() instead of REALLOC() to
+	 avoid unnecessary copying of old text. */
+      FREE(to->text);
+      to->text = MALLOC(to->alloc, char);
+    }
+
+  to->active = to->text;
+  to->length = from->length;
+  to->chomped = from->chomped;
+  MEMCPY(to->active, from->active, from->length);
+
+#ifdef HAVE_MBRTOWC
+  MEMCPY(&to->mbstate, &from->mbstate, sizeof (from->mbstate));
+#endif
+}
+
+/* Append the contents of the line `from' to the line `to'. */
+static void line_append P_((struct line *from, struct line *to));
+static void
+line_append(from, to)
+  struct line *from;
+  struct line *to;
+{
+  str_append(to, "\n", 1);
+  str_append(to, from->active, from->length);
+  to->chomped = from->chomped;
+
+#ifdef HAVE_MBRTOWC
+  MEMCPY (&to->mbstate, &from->mbstate, sizeof (from->mbstate));
+#endif
+}
+
+/* Exchange the contents of two "struct line" buffers. */
+static void line_exchange P_((struct line *, struct line *));
+static void
+line_exchange(a, b)
+  struct line *a;
+  struct line *b;
+{
+  struct line t;
+
+  MEMCPY(&t,  a, sizeof(struct line));
+  MEMCPY( a,  b, sizeof(struct line));
+  MEMCPY( b, &t, sizeof(struct line));
+}
+
+
+/* dummy function to simplify read_pattern_space() */
+static bool read_always_fail P_((struct input *));
+static bool
+read_always_fail(input)
+  struct input *input UNUSED;
+{
+  return false;
+}
+
+static bool read_file_line P_((struct input *));
+static bool
+read_file_line(input)
+  struct input *input;
+{
+  static char *b;
+  static size_t blen;
+
+  long result = ck_getline (&b, &blen, input->fp);
+  if (result <= 0)
+    return false;
+
+  /* Remove the trailing new-line that is left by getline. */
+  if (b[result - 1] == '\n')
+    --result;
+  else
+    line.chomped = false;
+
+  str_append(&line, b, result);
+  return true;
+}
+
+
+static inline void output_missing_newline P_((struct output *));
+static inline void
+output_missing_newline(outf)
+  struct output *outf;
+{
+  if (outf->missing_newline)
+    {
+      ck_fwrite("\n", 1, 1, outf->fp);
+      outf->missing_newline = false;
+    }
+}
+
+static inline void flush_output P_((FILE *));
+static inline void
+flush_output(fp)
+  FILE *fp;
+{
+#ifndef CONFIG_WITHOUT_O_OPT
+  if (fp != sed_stdout || unbuffered_output)
+#else
+  if (fp != stdout || unbuffered_output)
+#endif
+    ck_fflush(fp);
+}
+
+static void output_line P_((const char *, size_t, bool, struct output *));
+static void
+output_line(text, length, nl, outf)
+  const char *text;
+  size_t length;
+  bool nl;
+  struct output *outf;
+{
+  output_missing_newline(outf);
+
+  if (length)
+    ck_fwrite(text, 1, length, outf->fp);
+
+  if (nl)
+    ck_fwrite("\n", 1, 1, outf->fp);
+  else
+    outf->missing_newline = true;
+
+  flush_output(outf->fp);
+}
+
+static struct append_queue *next_append_slot P_((void));
+static struct append_queue *
+next_append_slot()
+{
+  struct append_queue *n = MALLOC(1, struct append_queue);
+
+  n->fname = NULL;
+  n->text = NULL;
+  n->textlen = 0;
+  n->next = NULL;
+  n->free = false;
+
+  if (append_tail)
+      append_tail->next = n;
+  else
+      append_head = n;
+  return append_tail = n;
+}
+
+static void release_append_queue P_((void));
+static void
+release_append_queue()
+{
+  struct append_queue *p, *q;
+
+  for (p=append_head; p; p=q)
+    {
+      if (p->free)
+        FREE(p->text);
+
+      q = p->next;
+      FREE(p);
+    }
+  append_head = append_tail = NULL;
+}
+
+static void dump_append_queue P_((void));
+static void
+dump_append_queue()
+{
+  struct append_queue *p;
+
+  output_missing_newline(&output_file);
+  for (p=append_head; p; p=p->next)
+    {
+      if (p->text)
+        ck_fwrite(p->text, 1, p->textlen, output_file.fp);
+
+      if (p->fname)
+	{
+	  char buf[FREAD_BUFFER_SIZE];
+	  size_t cnt;
+	  FILE *fp;
+
+	  /* "If _fname_ does not exist or cannot be read, it shall
+	     be treated as if it were an empty file, causing no error
+	     condition."  IEEE Std 1003.2-1992
+	     So, don't fail. */
+	  fp = ck_fopen(p->fname, "r", false);
+	  if (fp)
+	    {
+	      while ((cnt = ck_fread(buf, 1, sizeof buf, fp)) > 0)
+		ck_fwrite(buf, 1, cnt, output_file.fp);
+	      ck_fclose(fp);
+	    }
+	}
+    }
+
+  flush_output(output_file.fp);
+  release_append_queue();
+}
+
+
+/* Compute the name of the backup file for in-place editing */
+static char *get_backup_file_name P_((const char *));
+static char *
+get_backup_file_name(name)
+  const char *name;
+{
+  char *old_asterisk, *asterisk, *backup, *p;
+  int name_length = strlen(name), backup_length = strlen(in_place_extension);
+
+  /* Compute the length of the backup file */
+  for (asterisk = in_place_extension - 1, old_asterisk = asterisk + 1;
+       asterisk = strchr(old_asterisk, '*');
+       old_asterisk = asterisk + 1)
+    backup_length += name_length - 1;
+
+  p = backup = xmalloc(backup_length + 1);
+
+  /* Each iteration gobbles up to an asterisk */
+  for (asterisk = in_place_extension - 1, old_asterisk = asterisk + 1;
+       asterisk = strchr(old_asterisk, '*');
+       old_asterisk = asterisk + 1)
+    {
+      MEMCPY (p, old_asterisk, asterisk - old_asterisk);
+      p += asterisk - old_asterisk;
+      strcpy (p, name);
+      p += name_length;
+    }
+
+  /* Tack on what's after the last asterisk */
+  strcpy (p, old_asterisk);
+  return backup;
+}
+
+/* Initialize a struct input for the named file. */
+static void open_next_file P_((const char *name, struct input *));
+static void
+open_next_file(name, input)
+  const char *name;
+  struct input *input;
+{
+  buffer.length = 0;
+
+  if (name[0] == '-' && name[1] == '\0' && !in_place_extension)
+    {
+      clearerr(stdin);	/* clear any stale EOF indication */
+      input->fp = stdin;
+    }
+  else if ( ! (input->fp = ck_fopen(name, "r", false)) )
+    {
+      const char *ptr = strerror(errno);
+      fprintf(stderr, _("%s: can't read %s: %s\n"), myname, name, ptr);
+      input->read_fn = read_always_fail; /* a redundancy */
+      ++input->bad_count;
+      return;
+    }
+
+  input->read_fn = read_file_line;
+
+  if (in_place_extension)
+    {
+      int output_fd;
+      char *tmpdir = ck_strdup(name), *p;
+      struct stat st;
+
+      /* get the base name */
+      if (p = strrchr(tmpdir, '/'))
+	*(p + 1) = 0;
+      else
+	strcpy(tmpdir, ".");
+      
+      input->in_file_name = name;
+
+      if (isatty (fileno (input->fp)))
+        panic(_("couldn't edit %s: is a terminal"), input->in_file_name);
+
+      fstat (fileno (input->fp), &st);
+      if (!S_ISREG (st.st_mode))
+        panic(_("couldn't edit %s: not a regular file"), input->in_file_name);
+
+      output_file.fp = ck_mkstemp (&input->out_file_name, tmpdir, "sed");
+      output_file.missing_newline = false;
+      free (tmpdir);
+
+      if (!output_file.fp)
+        panic(_("couldn't open temporary file %s: %s"), input->out_file_name, strerror(errno));
+
+      output_fd = fileno (output_file.fp);
+#ifdef HAVE_FCHMOD
+      fchmod (output_fd, st.st_mode);
+#endif
+#ifdef HAVE_FCHOWN
+      if (fchown (output_fd, st.st_uid, st.st_gid) == -1)
+        fchown (output_fd, -1, st.st_gid);
+#endif
+    }
+  else
+#ifndef CONFIG_WITHOUT_O_OPT
+    output_file.fp = sed_stdout;
+#else
+    output_file.fp = stdout;
+#endif
+}
+
+
+/* Clean up an input stream that we are done with. */
+static void closedown P_((struct input *));
+static void
+closedown(input)
+  struct input *input;
+{
+  input->read_fn = read_always_fail;
+  if (!input->fp)
+    return;
+  if (input->fp != stdin) /* stdin can be reused on tty and tape devices */
+    ck_fclose(input->fp);
+
+  if (in_place_extension && output_file.fp != NULL)
+    {
+      ck_fclose (output_file.fp);
+      if (strcmp(in_place_extension, "*") != 0)
+        {
+          char *backup_file_name = get_backup_file_name(input->in_file_name);
+	  ck_rename (input->in_file_name, backup_file_name, input->out_file_name);
+          free (backup_file_name);
+	}
+
+      ck_rename (input->out_file_name, input->in_file_name, input->out_file_name);
+      free (input->out_file_name);
+    }
+
+  input->fp = NULL;
+}
+
+/* Reset range commands so that they are marked as non-matching */
+static void reset_addresses P_((struct vector *));
+static void
+reset_addresses(vec)
+     struct vector *vec;
+{
+  struct sed_cmd *cur_cmd;
+  int n;
+
+  for (cur_cmd = vec->v, n = vec->v_length; n--; cur_cmd++)
+    if (cur_cmd->a1
+	&& cur_cmd->a1->addr_type == ADDR_IS_NUM
+	&& cur_cmd->a1->addr_number == 0)
+      cur_cmd->range_state = RANGE_ACTIVE;
+    else
+      cur_cmd->range_state = RANGE_INACTIVE;
+}
+
+/* Read in the next line of input, and store it in the pattern space.
+   Return zero if there is nothing left to input. */
+static bool read_pattern_space P_((struct input *, struct vector *, bool));
+static bool
+read_pattern_space(input, the_program, append)
+  struct input *input;
+  struct vector *the_program;
+  bool append;
+{
+  if (append_head) /* redundant test to optimize for common case */
+    dump_append_queue();
+  replaced = false;
+  if (!append)
+    line.length = 0;
+  line.chomped = true;  /* default, until proved otherwise */
+
+  while ( ! (*input->read_fn)(input) )
+    {
+      closedown(input);
+
+      if (!*input->file_list)
+	return false;
+
+      if (input->reset_at_next_file)
+	{
+	  input->line_number = 0;
+	  reset_addresses (the_program);
+	  rewind_read_files ();
+
+	  /* If doing in-place editing, we will never append the
+	     new-line to this file; but if the output goes to stdout,
+	     we might still have to output the missing new-line.  */
+	  if (in_place_extension)
+	    output_file.missing_newline = false;
+
+	  input->reset_at_next_file = separate_files;
+	}
+
+      open_next_file (*input->file_list++, input);
+    }
+
+  ++input->line_number;
+  return true;
+}
+
+
+static bool last_file_with_data_p P_((struct input *));
+static bool
+last_file_with_data_p(input)
+  struct input *input;
+{
+  for (;;)
+    {
+      int ch;
+
+      closedown(input);
+      if (!*input->file_list)
+	return true;
+      open_next_file(*input->file_list++, input);
+      if (input->fp)
+	{
+	  if ((ch = getc(input->fp)) != EOF)
+	    {
+	      ungetc(ch, input->fp);
+	      return false;
+	    }
+	}
+    }
+}
+
+/* Determine if we match the `$' address. */
+static bool test_eof P_((struct input *));
+static bool
+test_eof(input)
+  struct input *input;
+{
+  int ch;
+
+  if (buffer.length)
+    return false;
+  if (!input->fp)
+    return separate_files || last_file_with_data_p(input);
+  if (feof(input->fp))
+    return separate_files || last_file_with_data_p(input);
+  if ((ch = getc(input->fp)) == EOF)
+    return separate_files || last_file_with_data_p(input);
+  ungetc(ch, input->fp);
+  return false;
+}
+
+/* Return non-zero if the current line matches the address
+   pointed to by `addr'. */
+static bool match_an_address_p P_((struct addr *, struct input *));
+static bool
+match_an_address_p(addr, input)
+  struct addr *addr;
+  struct input *input;
+{
+  switch (addr->addr_type)
+    {
+    case ADDR_IS_NULL:
+      return true;
+
+    case ADDR_IS_REGEX:
+      return match_regex(addr->addr_regex, line.active, line.length, 0, NULL, 0);
+
+    case ADDR_IS_NUM_MOD:
+      return (input->line_number >= addr->addr_number
+	      && ((input->line_number - addr->addr_number) % addr->addr_step) == 0);
+
+    case ADDR_IS_STEP:
+    case ADDR_IS_STEP_MOD:
+      /* reminder: these are only meaningful for a2 addresses */
+      /* a2->addr_number needs to be recomputed each time a1 address
+         matches for the step and step_mod types */
+      return (addr->addr_number <= input->line_number);
+
+    case ADDR_IS_LAST:
+      return test_eof(input);
+
+      /* ADDR_IS_NUM is handled in match_address_p.  */
+    case ADDR_IS_NUM:
+    default:
+      panic("INTERNAL ERROR: bad address type");
+    }
+  /*NOTREACHED*/
+  return false;
+}
+
+/* return non-zero if current address is valid for cmd */
+static bool match_address_p P_((struct sed_cmd *, struct input *));
+static bool
+match_address_p(cmd, input)
+  struct sed_cmd *cmd;
+  struct input *input;
+{
+  if (!cmd->a1)
+    return true;
+
+  if (cmd->range_state != RANGE_ACTIVE)
+    {
+      /* Find if we are going to activate a range.  Handle ADDR_IS_NUM
+	 specially: it represent an "absolute" state, it should not
+	 be computed like regexes.  */
+      if (cmd->a1->addr_type == ADDR_IS_NUM)
+	{
+	  if (!cmd->a2)
+	    return (input->line_number == cmd->a1->addr_number);
+
+	  if (cmd->range_state == RANGE_CLOSED
+	      || input->line_number < cmd->a1->addr_number)
+	    return false;
+	}
+      else
+	{
+          if (!cmd->a2)
+	    return match_an_address_p(cmd->a1, input);
+
+	  if (!match_an_address_p(cmd->a1, input))
+            return false;
+	}
+
+      /* Ok, start a new range.  */
+      cmd->range_state = RANGE_ACTIVE;
+      switch (cmd->a2->addr_type)
+	{
+	case ADDR_IS_REGEX:
+	  /* Always include at least two lines.  */
+	  return true;
+	case ADDR_IS_NUM:
+	  /* Same handling as below, but always include at least one line.  */
+          if (input->line_number >= cmd->a2->addr_number)
+	    cmd->range_state = RANGE_CLOSED;
+          return true;
+	case ADDR_IS_STEP:
+	  cmd->a2->addr_number = input->line_number + cmd->a2->addr_step;
+	  return true;
+	case ADDR_IS_STEP_MOD:
+	  cmd->a2->addr_number = input->line_number + cmd->a2->addr_step
+				 - (input->line_number%cmd->a2->addr_step);
+	  return true;
+	default:
+	  break;
+        }
+    }
+
+  /* cmd->range_state == RANGE_ACTIVE.  Check if the range is
+     ending; also handle ADDR_IS_NUM specially in this case.  */
+
+  if (cmd->a2->addr_type == ADDR_IS_NUM)
+    {
+      /* If the second address is a line number, and if we got past
+         that line, fail to match (it can happen when you jump
+	 over such addresses with `b' and `t'.  Use RANGE_CLOSED
+         so that the range is not re-enabled anymore.  */
+      if (input->line_number >= cmd->a2->addr_number)
+	cmd->range_state = RANGE_CLOSED;
+
+      return (input->line_number <= cmd->a2->addr_number);
+   }
+
+  /* Other addresses are treated as usual.  */
+  if (match_an_address_p(cmd->a2, input))
+    cmd->range_state = RANGE_CLOSED;
+
+  return true;
+}
+
+
+static void do_list P_((int line_len));
+static void
+do_list(line_len)
+     int line_len;
+{
+  unsigned char *p = CAST(unsigned char *)line.active;
+  countT len = line.length;
+  countT width = 0;
+  char obuf[180];	/* just in case we encounter a 512-bit char (;-) */
+  char *o;
+  size_t olen;
+  FILE *fp = output_file.fp;
+
+  output_missing_newline(&output_file);
+  for (; len--; ++p) {
+      o = obuf;
+      
+      /* Some locales define 8-bit characters as printable.  This makes the
+	 testsuite fail at 8to7.sed because the `l' command in fact will not
+	 convert the 8-bit characters. */
+#if defined isascii || defined HAVE_ISASCII
+      if (isascii(*p) && ISPRINT(*p)) {
+#else
+      if (ISPRINT(*p)) {
+#endif
+	  *o++ = *p;
+	  if (*p == '\\')
+	    *o++ = '\\';
+      } else {
+	  *o++ = '\\';
+	  switch (*p) {
+#if defined __STDC__ && __STDC__-0
+	    case '\a': *o++ = 'a'; break;
+#else /* Not STDC; we'll just assume ASCII */
+	    case 007:  *o++ = 'a'; break;
+#endif
+	    case '\b': *o++ = 'b'; break;
+	    case '\f': *o++ = 'f'; break;
+	    case '\n': *o++ = 'n'; break;
+	    case '\r': *o++ = 'r'; break;
+	    case '\t': *o++ = 't'; break;
+	    case '\v': *o++ = 'v'; break;
+	    default:
+	      sprintf(o, "%03o", *p);
+	      o += strlen(o);
+	      break;
+	    }
+      }
+      olen = o - obuf;
+      if (width+olen >= line_len && line_len > 0) {
+	  ck_fwrite("\\\n", 1, 2, fp);
+	  width = 0;
+      }
+      ck_fwrite(obuf, 1, olen, fp);
+      width += olen;
+  }
+  ck_fwrite("$\n", 1, 2, fp);
+  flush_output (fp);
+}
+
+
+static enum replacement_types append_replacement P_((struct line *, struct replacement *,
+						     struct re_registers *,
+						     enum replacement_types));
+static enum replacement_types
+append_replacement (buf, p, regs, repl_mod)
+  struct line *buf;
+  struct replacement *p;
+  struct re_registers *regs;
+  enum replacement_types repl_mod;
+{
+  for (; p; p=p->next)
+    {
+      int i = p->subst_id;
+      enum replacement_types curr_type;
+
+      /* Apply a \[lu] modifier that was given earlier, but which we
+         have not had yet the occasion to apply.  But don't do it
+         if this replacement has a modifier of its own. */
+      curr_type = (p->repl_type & REPL_MODIFIERS)
+        ? p->repl_type
+        : p->repl_type | repl_mod;
+
+      repl_mod = 0;
+      if (p->prefix_length)
+        {
+          str_append_modified(buf, p->prefix, p->prefix_length,
+    			      curr_type);
+          curr_type &= ~REPL_MODIFIERS;
+        }
+
+      if (0 <= i)
+        if (regs->end[i] == regs->start[i] && p->repl_type & REPL_MODIFIERS)
+          /* Save this modifier, we shall apply it later.
+	     e.g. in s/()([a-z])/\u\1\2/
+	     the \u modifier is applied to \2, not \1 */
+	  repl_mod = curr_type & REPL_MODIFIERS;
+
+	else
+	  str_append_modified(buf, line.active + regs->start[i],
+			      CAST(size_t)(regs->end[i] - regs->start[i]),
+			      curr_type);
+    }
+
+  return repl_mod;
+}
+
+static void do_subst P_((struct subst *));
+static void
+do_subst(sub)
+  struct subst *sub;
+{
+  size_t start = 0;	/* where to start scan for (next) match in LINE */
+  size_t last_end = 0;  /* where did the last successful match end in LINE */
+  countT count = 0;	/* number of matches found */
+  bool again = true;
+
+  static struct re_registers regs;
+
+  if (s_accum.alloc == 0)
+    line_init(&s_accum, INITIAL_BUFFER_SIZE);
+  s_accum.length = 0;
+
+  /* The first part of the loop optimizes s/xxx// when xxx is at the
+     start, and s/xxx$// */
+  if (!match_regex(sub->regx, line.active, line.length, start,
+		   &regs, sub->max_id + 1))
+    return;
+  
+  if (!sub->replacement && sub->numb <= 1)
+    if (regs.start[0] == 0 && !sub->global)
+      {
+	/* We found a match, set the `replaced' flag. */
+	replaced = true;
+
+	line.active += regs.end[0];
+	line.length -= regs.end[0];
+	line.alloc -= regs.end[0];
+	goto post_subst;
+      }
+    else if (regs.end[0] == line.length)
+      {
+	/* We found a match, set the `replaced' flag. */
+	replaced = true;
+
+	line.length = regs.start[0];
+	goto post_subst;
+      }
+
+  do
+    {
+      enum replacement_types repl_mod = 0;
+
+      size_t offset = regs.start[0];
+      size_t matched = regs.end[0] - regs.start[0];
+
+      /* Copy stuff to the left of this match into the output string. */
+      if (start < offset)
+	str_append(&s_accum, line.active + start, offset - start);
+
+      /* If we're counting up to the Nth match, are we there yet?
+         And even if we are there, there is another case we have to
+	 skip: are we matching an empty string immediately following
+         another match?
+
+         This latter case avoids that baaaac, when passed through
+         s,a*,x,g, gives `xbxxcx' instead of xbxcx.  This behavior is
+         unacceptable because it is not consistently applied (for
+         example, `baaaa' gives `xbx', not `xbxx'). */
+      if ((matched > 0 || count == 0 || offset > last_end)
+	  && ++count >= sub->numb)
+        {
+          /* We found a match, set the `replaced' flag. */
+          replaced = true;
+
+          /* Now expand the replacement string into the output string. */
+          repl_mod = append_replacement (&s_accum, sub->replacement, &regs, repl_mod);
+	  again = sub->global;
+        }
+      else
+	{
+          /* The match was not replaced.  Copy the text until its
+             end; if it was vacuous, skip over one character and
+	     add that character to the output.  */
+	  if (matched == 0)
+	    {
+	      if (start < line.length)
+	        matched = 1;
+	      else
+	        break;
+	    }
+
+	  str_append(&s_accum, line.active + offset, matched);
+        }
+
+      /* Start after the match.  last_end is the real end of the matched
+	 substring, excluding characters that were skipped in case the RE
+	 matched the empty string.  */
+      start = offset + matched;
+      last_end = regs.end[0];
+    }
+  while (again
+	 && start <= line.length
+	 && match_regex(sub->regx, line.active, line.length, start,
+			&regs, sub->max_id + 1));
+
+  /* Copy stuff to the right of the last match into the output string. */
+  if (start < line.length)
+    str_append(&s_accum, line.active + start, line.length-start);
+  s_accum.chomped = line.chomped;
+
+  /* Exchange line and s_accum.  This can be much cheaper
+     than copying s_accum.active into line.text (for huge lines). */
+  line_exchange(&line, &s_accum);
+  
+  /* Finish up. */
+  if (count < sub->numb)
+    return;
+
+ post_subst:
+  if (sub->print & 1)
+    output_line(line.active, line.length, line.chomped, &output_file);
+  
+  if (sub->eval) 
+    {
+#ifdef HAVE_POPEN
+      FILE *pipe;
+      s_accum.length = 0;
+      
+      str_append (&line, "", 1);
+      pipe = popen(line.active, "r");
+      
+      if (pipe != NULL) 
+	{
+	  while (!feof (pipe)) 
+	    {
+	      char buf[4096];
+	      int n = fread (buf, sizeof(char), 4096, pipe);
+	      if (n > 0)
+		str_append(&s_accum, buf, n);
+	    }
+	  
+	  pclose (pipe);
+
+	  line_exchange(&line, &s_accum);
+	  if (line.length &&
+	      line.active[line.length - 1] == '\n')
+	    line.length--;
+	}
+      else
+	panic(_("error in subprocess"));
+#else
+      panic(_("option `e' not supported"));
+#endif
+    } 
+  
+  if (sub->print & 2)
+    output_line(line.active, line.length, line.chomped, &output_file);
+  if (sub->outf)
+    output_line(line.active, line.length, line.chomped, sub->outf);
+}
+
+#ifdef EXPERIMENTAL_DASH_N_OPTIMIZATION
+/* Used to attempt a simple-minded optimization. */
+
+static countT branches;
+
+static countT count_branches P_((struct vector *));
+static countT
+count_branches(program)
+  struct vector *program;
+{
+  struct sed_cmd *cur_cmd = program->v;
+  countT isn_cnt = program->v_length;
+  countT cnt = 0;
+
+  while (isn_cnt-- > 0)
+    {
+      switch (cur_cmd->cmd)
+	{
+	case 'b':
+	case 't':
+	case 'T':
+	case '{':
+	  ++cnt;
+	}
+    }
+  return cnt;
+}
+
+static struct sed_cmd *shrink_program P_((struct vector *, struct sed_cmd *));
+static struct sed_cmd *
+shrink_program(vec, cur_cmd)
+  struct vector *vec;
+  struct sed_cmd *cur_cmd;
+{
+  struct sed_cmd *v = vec->v;
+  struct sed_cmd *last_cmd = v + vec->v_length;
+  struct sed_cmd *p;
+  countT cmd_cnt;
+
+  for (p=v; p < cur_cmd; ++p)
+    if (p->cmd != '#')
+      MEMCPY(v++, p, sizeof *v);
+  cmd_cnt = v - vec->v;
+
+  for (; p < last_cmd; ++p)
+    if (p->cmd != '#')
+      MEMCPY(v++, p, sizeof *v);
+  vec->v_length = v - vec->v;
+
+  return (0 < vec->v_length) ? (vec->v + cmd_cnt) : CAST(struct sed_cmd *)0;
+}
+#endif /*EXPERIMENTAL_DASH_N_OPTIMIZATION*/
+
+/* Execute the program `vec' on the current input line.
+   Return exit status if caller should quit, -1 otherwise. */
+static int execute_program P_((struct vector *, struct input *));
+static int
+execute_program(vec, input)
+  struct vector *vec;
+  struct input *input;
+{
+  struct sed_cmd *cur_cmd;
+  struct sed_cmd *end_cmd;
+
+  cur_cmd = vec->v;
+  end_cmd = vec->v + vec->v_length;
+  while (cur_cmd < end_cmd)
+    {
+      if (match_address_p(cur_cmd, input) != cur_cmd->addr_bang)
+	{
+	  switch (cur_cmd->cmd)
+	    {
+	    case 'a':
+	      {
+		struct append_queue *aq = next_append_slot();
+		aq->text = cur_cmd->x.cmd_txt.text;
+		aq->textlen = cur_cmd->x.cmd_txt.text_length;
+	      }
+	      break;
+
+	    case '{':
+	    case 'b':
+	      cur_cmd = vec->v + cur_cmd->x.jump_index;
+	      continue;
+
+	    case '}':
+	    case '#':
+	    case ':':
+	      /* Executing labels and block-ends are easy. */
+	      break;
+
+	    case 'c':
+	      if (cur_cmd->range_state != RANGE_ACTIVE)
+		output_line(cur_cmd->x.cmd_txt.text,
+			    cur_cmd->x.cmd_txt.text_length - 1, true,
+			    &output_file);
+	      /* POSIX.2 is silent about c starting a new cycle,
+		 but it seems to be expected (and make sense). */
+	      /* Fall Through */
+	    case 'd':
+	      return -1;
+
+	    case 'D':
+	      {
+		char *p = memchr(line.active, '\n', line.length);
+		if (!p)
+		  return -1;
+
+		++p;
+		line.alloc -= p - line.active;
+		line.length -= p - line.active;
+		line.active += p - line.active;
+
+		/* reset to start next cycle without reading a new line: */
+		cur_cmd = vec->v;
+		continue;
+	      }
+
+	    case 'e': {
+#ifdef HAVE_POPEN
+	      FILE *pipe;
+	      int cmd_length = cur_cmd->x.cmd_txt.text_length;
+	      if (s_accum.alloc == 0)
+		line_init(&s_accum, INITIAL_BUFFER_SIZE);
+	      s_accum.length = 0;
+
+	      if (!cmd_length)
+		{
+		  str_append (&line, "", 1);
+		  pipe = popen(line.active, "r");
+		} 
+	      else
+		{
+		  cur_cmd->x.cmd_txt.text[cmd_length - 1] = 0;
+		  pipe = popen(cur_cmd->x.cmd_txt.text, "r");
+                  output_missing_newline(&output_file);
+		}
+
+	      if (pipe != NULL) 
+		{
+		  while (!feof (pipe)) 
+		    {
+		      char buf[4096];
+		      int n = fread (buf, sizeof(char), 4096, pipe);
+		      if (n > 0)
+			if (!cmd_length)
+			  str_append(&s_accum, buf, n);
+			else
+			  ck_fwrite(buf, 1, n, output_file.fp);
+		    }
+		  
+		  pclose (pipe);
+		  if (!cmd_length)
+		    {
+		      /* Store into pattern space for plain `e' commands */
+		      if (s_accum.length &&
+			  s_accum.active[s_accum.length - 1] == '\n')
+			s_accum.length--;
+
+		      /* Exchange line and s_accum.  This can be much
+			 cheaper than copying s_accum.active into line.text
+			 (for huge lines). */
+		      line_exchange(&line, &s_accum);
+		    }
+                  else
+                    flush_output(output_file.fp);
+
+		}
+	      else
+		panic(_("error in subprocess"));
+#else
+	      panic(_("`e' command not supported"));
+#endif
+	      break;
+	    }
+
+	    case 'g':
+	      line_copy(&hold, &line);
+	      break;
+
+	    case 'G':
+	      line_append(&hold, &line);
+	      break;
+
+	    case 'h':
+	      line_copy(&line, &hold);
+	      break;
+
+	    case 'H':
+	      line_append(&line, &hold);
+	      break;
+
+	    case 'i':
+	      output_line(cur_cmd->x.cmd_txt.text,
+			  cur_cmd->x.cmd_txt.text_length - 1,
+			  true, &output_file);
+	      break;
+
+	    case 'l':
+	      do_list(cur_cmd->x.int_arg == -1
+		      ? lcmd_out_line_len
+		      : cur_cmd->x.int_arg);
+	      break;
+
+	    case 'L':
+              output_missing_newline(&output_file);
+	      fmt(line.active, line.active + line.length,
+		  cur_cmd->x.int_arg == -1
+		  ? lcmd_out_line_len
+		  : cur_cmd->x.int_arg,
+		  output_file.fp);
+              flush_output(output_file.fp);
+	      break;
+
+	    case 'n':
+	      if (!no_default_output)
+		output_line(line.active, line.length, line.chomped, &output_file);
+	      if (test_eof(input) || !read_pattern_space(input, vec, false))
+		return -1;
+	      break;
+
+	    case 'N':
+	      str_append(&line, "\n", 1);
+ 
+              if (test_eof(input) || !read_pattern_space(input, vec, true))
+                {
+                  line.length--;
+                  if (posixicity == POSIXLY_EXTENDED && !no_default_output)
+                     output_line(line.active, line.length, line.chomped,
+                                 &output_file);
+                  return -1;
+                }
+	      break;
+
+	    case 'p':
+	      output_line(line.active, line.length, line.chomped, &output_file);
+	      break;
+
+	    case 'P':
+	      {
+		char *p = memchr(line.active, '\n', line.length);
+		output_line(line.active, p ? p - line.active : line.length,
+			    p ? true : line.chomped, &output_file);
+	      }
+	      break;
+
+            case 'q':
+              if (!no_default_output)
+                output_line(line.active, line.length, line.chomped, &output_file);
+	      dump_append_queue();
+
+	    case 'Q':
+	      return cur_cmd->x.int_arg == -1 ? 0 : cur_cmd->x.int_arg;
+
+	    case 'r':
+	      if (cur_cmd->x.fname)
+		{
+		  struct append_queue *aq = next_append_slot();
+		  aq->fname = cur_cmd->x.fname;
+		}
+	      break;
+
+	    case 'R':
+	      if (cur_cmd->x.fp && !feof (cur_cmd->x.fp))
+		{
+		  struct append_queue *aq;
+		  size_t buflen;
+		  char *text = NULL;
+		  int result;
+
+		  result = ck_getline (&text, &buflen, cur_cmd->x.fp);
+		  if (result != EOF)
+		    {
+		      aq = next_append_slot();
+		      aq->free = true;
+		      aq->text = text;
+		      aq->textlen = result;
+		    }
+		}
+	      break;
+
+	    case 's':
+	      do_subst(cur_cmd->x.cmd_subst);
+	      break;
+
+	    case 't':
+	      if (replaced)
+		{
+		  replaced = false;
+		  cur_cmd = vec->v + cur_cmd->x.jump_index;
+		  continue;
+		}
+	      break;
+
+	    case 'T':
+	      if (!replaced)
+		{
+		  cur_cmd = vec->v + cur_cmd->x.jump_index;
+		  continue;
+		}
+	      else
+		replaced = false;
+	      break;
+
+	    case 'w':
+	      if (cur_cmd->x.fp)
+		output_line(line.active, line.length,
+			    line.chomped, cur_cmd->x.outf);
+	      break;
+
+	    case 'W':
+	      if (cur_cmd->x.fp)
+	        {
+		  char *p = memchr(line.active, '\n', line.length);
+		  output_line(line.active, p ? p - line.active : line.length,
+			      p ? true : line.chomped, cur_cmd->x.outf);
+	        }
+	      break;
+
+	    case 'x':
+	      line_exchange(&line, &hold);
+	      break;
+
+	    case 'y':
+	      {
+#ifdef HAVE_MBRTOWC
+               if (mb_cur_max > 1)
+                 {
+                   int idx, prev_idx; /* index in the input line.  */
+                   char **trans;
+                   mbstate_t mbstate;
+                   memset(&mbstate, 0, sizeof(mbstate_t));
+                   for (idx = 0; idx < line.length;)
+                     {
+                       int mbclen, i;
+                       mbclen = MBRLEN (line.active + idx, line.length - idx,
+                                          &mbstate);
+                       /* An invalid sequence, or a truncated multibyte
+                          character.  We treat it as a singlebyte character.
+                       */
+                       if (mbclen == (size_t) -1 || mbclen == (size_t) -2
+                           || mbclen == 0)
+                         mbclen = 1;
+
+                       trans = cur_cmd->x.translatemb;
+                       /* `i' indicate i-th translate pair.  */
+                       for (i = 0; trans[2*i] != NULL; i++)
+                         {
+                           if (strncmp(line.active + idx, trans[2*i], mbclen) == 0)
+                             {
+                               bool move_remain_buffer = false;
+                               int trans_len = strlen(trans[2*i+1]);
+
+                               if (mbclen < trans_len)
+                                 {
+                                   int new_len;
+                                   new_len = line.length + 1 + trans_len - mbclen;
+                                   /* We must extend the line buffer.  */
+                                   if (line.alloc < new_len)
+                                     {
+                                       /* And we must resize the buffer.  */
+                                       resize_line(&line, new_len);
+                                     }
+                                   move_remain_buffer = true;
+                                 }
+                               else if (mbclen > trans_len)
+                                 {
+                                   /* We must truncate the line buffer.  */
+                                   move_remain_buffer = true;
+                                 }
+                               prev_idx = idx;
+                               if (move_remain_buffer)
+                                 {
+                                   int move_len, move_offset;
+                                   char *move_from, *move_to;
+                                   /* Move the remaining with \0.  */
+                                   move_from = line.active + idx + mbclen;
+                                   move_to = line.active + idx + trans_len;
+                                   move_len = line.length + 1 - idx - mbclen;
+                                   move_offset = trans_len - mbclen;
+                                   memmove(move_to, move_from, move_len);
+                                   line.length += move_offset;
+                                   idx += move_offset;
+                                 }
+                               strncpy(line.active + prev_idx, trans[2*i+1],
+                                       trans_len);
+                               break;
+                             }
+                         }
+                       idx += mbclen;
+                     }
+                 }
+               else
+#endif /* HAVE_MBRTOWC */
+                 {
+                   unsigned char *p, *e;
+                   p = CAST(unsigned char *)line.active;
+                   for (e=p+line.length; p<e; ++p)
+                     *p = cur_cmd->x.translate[*p];
+                 }
+	      }
+	      break;
+
+	    case '=':
+              output_missing_newline(&output_file);
+              fprintf(output_file.fp, "%lu\n",
+                      CAST(unsigned long)input->line_number);
+              flush_output(output_file.fp);
+	      break;
+
+	    default:
+	      panic("INTERNAL ERROR: Bad cmd %c", cur_cmd->cmd);
+	    }
+	}
+
+#ifdef EXPERIMENTAL_DASH_N_OPTIMIZATION
+      /* If our top-level program consists solely of commands with
+         ADDR_IS_NUM addresses then once we past the last mentioned
+         line we should be able to quit if no_default_output is true,
+         or otherwise quickly copy input to output.  Now whether this
+         optimization is a win or not depends on how cheaply we can
+         implement this for the cases where it doesn't help, as
+         compared against how much time is saved.  One semantic
+         difference (which I think is an improvement) is that *this*
+         version will terminate after printing line two in the script
+         "yes | sed -n 2p". 
+        
+         Don't use this when in-place editing is active, because line
+         numbers restart each time then. */
+      else if (!separate_files)
+	{
+	  if (cur_cmd->a1->addr_type == ADDR_IS_NUM
+	      && (cur_cmd->a2
+		  ? cur_cmd->range_state == RANGE_CLOSED
+		  : cur_cmd->a1->addr_number < input->line_number))
+	    {
+	      /* Skip this address next time */
+	      cur_cmd->addr_bang = !cur_cmd->addr_bang;
+	      cur_cmd->a1->addr_type = ADDR_IS_NULL;
+	      if (cur_cmd->a2)
+		cur_cmd->a2->addr_type = ADDR_IS_NULL;
+
+	      /* can we make an optimization? */
+	      if (cur_cmd->addr_bang)
+		{
+		  if (cur_cmd->cmd == 'b' || cur_cmd->cmd == 't'
+		      || cur_cmd->cmd == 'T' || cur_cmd->cmd == '}')
+		    branches--;
+
+		  cur_cmd->cmd = '#';	/* replace with no-op */
+	          if (branches == 0)
+		    cur_cmd = shrink_program(vec, cur_cmd);
+		  if (!cur_cmd && no_default_output)
+		    return 0;
+		  end_cmd = vec->v + vec->v_length;
+		  if (!cur_cmd)
+		    cur_cmd = end_cmd;
+		  continue;
+		}
+	    }
+	}
+#endif /*EXPERIMENTAL_DASH_N_OPTIMIZATION*/
+
+      /* this is buried down here so that a "continue" statement can skip it */
+      ++cur_cmd;
+    }
+
+    if (!no_default_output)
+      output_line(line.active, line.length, line.chomped, &output_file);
+    return -1;
+}
+
+
+
+/* Apply the compiled script to all the named files. */
+int
+process_files(the_program, argv)
+  struct vector *the_program;
+  char **argv;
+{
+  static char dash[] = "-";
+  static char *stdin_argv[2] = { dash, NULL };
+  struct input input;
+  int status;
+
+  line_init(&line, INITIAL_BUFFER_SIZE);
+  line_init(&hold, 0);
+  line_init(&buffer, 0);
+
+#ifdef EXPERIMENTAL_DASH_N_OPTIMIZATION
+  branches = count_branches(the_program);
+#endif /*EXPERIMENTAL_DASH_N_OPTIMIZATION*/
+  input.reset_at_next_file = true;
+  if (argv && *argv)
+    input.file_list = argv;
+  else if (in_place_extension)
+    panic(_("no input files"));
+  else
+    input.file_list = stdin_argv;
+
+  input.bad_count = 0;
+  input.line_number = 0;
+  input.read_fn = read_always_fail;
+  input.fp = NULL;
+
+  status = EXIT_SUCCESS;
+  while (read_pattern_space(&input, the_program, false))
+    {
+      status = execute_program(the_program, &input);
+      if (status == -1)
+	status = EXIT_SUCCESS;
+      else
+	break;
+    }
+  closedown(&input);
+
+#ifdef DEBUG_LEAKS
+  /* We're about to exit, so these free()s are redundant.
+     But if we're running under a memory-leak detecting
+     implementation of malloc(), we want to explicitly
+     deallocate in order to avoid extraneous noise from
+     the allocator. */
+  release_append_queue();
+  FREE(buffer.text);
+  FREE(hold.text);
+  FREE(line.text);
+  FREE(s_accum.text);
+#endif /*DEBUG_LEAKS*/
+
+  if (input.bad_count)
+    status = 2;
+
+  return status;
+}
diff --git a/src/sed/sed/fmt.c b/src/sed/sed/fmt.c
new file mode 100644
index 0000000..64600a0
--- /dev/null
+++ b/src/sed/sed/fmt.c
@@ -0,0 +1,587 @@
+/* `L' command implementation for GNU sed, based on GNU fmt 1.22.
+   Copyright (C) 1994, 1995, 1996, 2002, 2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+/* GNU fmt was written by Ross Paterson <rap@doc.ic.ac.uk>.  */
+
+#include "sed.h"
+
+#include <stdio.h>
+#include <ctype.h>
+#include <sys/types.h>
+
+#if HAVE_LIMITS_H
+# include <limits.h>
+#endif
+
+#ifndef UINT_MAX
+# define UINT_MAX ((unsigned int) ~(unsigned int) 0)
+#endif
+
+#ifndef INT_MAX
+# define INT_MAX ((int) (UINT_MAX >> 1))
+#endif
+
+/* The following parameters represent the program's idea of what is
+   "best".  Adjust to taste, subject to the caveats given.  */
+
+/* Prefer lines to be LEEWAY % shorter than the maximum width, giving
+   room for optimization.  */
+#define	LEEWAY	7
+
+/* Costs and bonuses are expressed as the equivalent departure from the
+   optimal line length, multiplied by 10.  e.g. assigning something a
+   cost of 50 means that it is as bad as a line 5 characters too short
+   or too long.  The definition of SHORT_COST(n) should not be changed.
+   However, EQUIV(n) may need tuning.  */
+
+typedef long COST;
+
+#define	MAXCOST	(~(((unsigned long) 1) << (8 * sizeof (COST) -1)))
+
+#define	SQR(n)		((n) * (n))
+#define	EQUIV(n)	SQR ((COST) (n))
+
+/* Cost of a filled line n chars longer or shorter than best_width.  */
+#define	SHORT_COST(n)	EQUIV ((n) * 10)
+
+/* Cost of the difference between adjacent filled lines.  */
+#define	RAGGED_COST(n)	(SHORT_COST (n) / 2)
+
+/* Basic cost per line.  */
+#define	LINE_COST	EQUIV (70)
+
+/* Cost of breaking a line after the first word of a sentence, where
+   the length of the word is N.  */
+#define	WIDOW_COST(n)	(EQUIV (200) / ((n) + 2))
+
+/* Cost of breaking a line before the last word of a sentence, where
+   the length of the word is N.  */
+#define	ORPHAN_COST(n)	(EQUIV (150) / ((n) + 2))
+
+/* Bonus for breaking a line at the end of a sentence.  */
+#define	SENTENCE_BONUS	EQUIV (50)
+
+/* Cost of breaking a line after a period not marking end of a sentence.
+   With the definition of sentence we are using (borrowed from emacs, see
+   get_line()) such a break would then look like a sentence break.  Hence
+   we assign a very high cost -- it should be avoided unless things are
+   really bad.  */
+#define	NOBREAK_COST	EQUIV (600)
+
+/* Bonus for breaking a line before open parenthesis.  */
+#define	PAREN_BONUS	EQUIV (40)
+
+/* Bonus for breaking a line after other punctuation.  */
+#define	PUNCT_BONUS	EQUIV(40)
+
+/* Credit for breaking a long paragraph one line later.  */
+#define	LINE_CREDIT	EQUIV(3)
+
+/* Size of paragraph buffer in words.  Longer paragraphs are handled
+   neatly (cf. flush_paragraph()), so there's little to gain by making
+   these larger.  */
+#define	MAXWORDS	1000
+
+#define GETC()          (parabuf == end_of_parabuf ? EOF : *parabuf++)
+
+/* Extra ctype(3)-style macros.  */
+
+#define	isopen(c)	(strchr ("([`'\"", (c)) != NULL)
+#define	isclose(c)	(strchr (")]'\"", (c)) != NULL)
+#define	isperiod(c)	(strchr (".?!", (c)) != NULL)
+
+/* Size of a tab stop, for expansion on input and re-introduction on
+   output.  */
+#define	TABWIDTH	8
+
+/* Word descriptor structure.  */
+
+typedef struct Word WORD;
+
+struct Word
+  {
+
+    /* Static attributes determined during input.  */
+
+    const char *text;		/* the text of the word */
+    short length;		/* length of this word */
+    short space;		/* the size of the following space */
+    unsigned paren:1;		/* starts with open paren */
+    unsigned period:1;		/* ends in [.?!])* */
+    unsigned punct:1;		/* ends in punctuation */
+    unsigned final:1;		/* end of sentence */
+
+    /* The remaining fields are computed during the optimization.  */
+
+    short line_length;		/* length of the best line starting here */
+    COST best_cost;		/* cost of best paragraph starting here */
+    WORD *next_break;		/* break which achieves best_cost */
+  };
+
+/* Forward declarations.  */
+
+static bool get_paragraph P_ ((void));
+static int get_line P_ ((int c));
+static int get_space P_ ((int c));
+static int copy_rest P_ ((int c));
+static bool same_para P_ ((int c));
+static void flush_paragraph P_ ((void));
+static void fmt_paragraph P_ ((void));
+static void check_punctuation P_ ((WORD *w));
+static COST base_cost P_ ((WORD *this));
+static COST line_cost P_ ((WORD *next, int len));
+static void put_paragraph P_ ((WORD *finish));
+static void put_line P_ ((WORD *w, int indent));
+static void put_word P_ ((WORD *w));
+static void put_space P_ ((int space));
+
+/* Option values.  */
+
+/* User-supplied maximum line width (default WIDTH).  The only output
+   lines
+   longer than this will each comprise a single word.  */
+static int max_width;
+
+/* Space for the paragraph text.  */
+static const char *parabuf;
+
+/* End of space for the paragraph text.  */
+static const char *end_of_parabuf;
+
+/* The file on which we output */
+static FILE *outfile;
+
+/* Values derived from the option values.  */
+
+/* The preferred width of text lines, set to LEEWAY % less than max_width.  */
+static int best_width;
+
+/* Dynamic variables.  */
+
+/* Start column of the character most recently read from the input file.  */
+static int in_column;
+
+/* Start column of the next character to be written to stdout.  */
+static int out_column;
+
+/* The words of a paragraph -- longer paragraphs are handled neatly
+   (cf. flush_paragraph()).  */
+static WORD words[MAXWORDS];
+
+/* A pointer into the above word array, indicating the first position
+   after the last complete word.  Sometimes it will point at an incomplete
+   word.  */
+static WORD *word_limit;
+
+/* Indentation of the first line of the current paragraph.  */
+static int first_indent;
+
+/* Indentation of other lines of the current paragraph */
+static int other_indent;
+
+/* The last character read from the input file.  */
+static int next_char;
+
+/* If nonzero, the length of the last line output in the current
+   paragraph, used to charge for raggedness at the split point for long
+   paragraphs chosen by fmt_paragraph().  */
+static int last_line_length;
+
+/* read file F and send formatted output to stdout.  */
+
+void
+fmt (const char *line, const char *line_end, int max_length, FILE *output_file)
+{
+  parabuf = line;
+  end_of_parabuf = line_end;
+  outfile = output_file;
+
+  max_width = max_length;
+  best_width = max_width * (201 - 2 * LEEWAY) / 200;
+
+  in_column = 0;
+  other_indent = 0;
+  next_char = GETC();
+  while (get_paragraph ())
+    {
+      fmt_paragraph ();
+      put_paragraph (word_limit);
+    }
+}
+
+/* Read a paragraph from input file F.  A paragraph consists of a
+   maximal number of non-blank (excluding any prefix) lines
+   with the same indent.
+
+   Return false if end-of-file was encountered before the start of a
+   paragraph, else true.  */
+
+static bool
+get_paragraph ()
+{
+  register int c;
+
+  last_line_length = 0;
+  c = next_char;
+
+  /* Scan (and copy) blank lines, and lines not introduced by the prefix.  */
+
+  while (c == '\n' || c == EOF)
+    {
+      c = copy_rest (c);
+      if (c == EOF)
+	{
+	  next_char = EOF;
+	  return false;
+	}
+      putc ('\n', outfile);
+      c = GETC();
+    }
+
+  /* Got a suitable first line for a paragraph.  */
+
+  first_indent = in_column;
+  word_limit = words;
+  c = get_line (c);
+
+  /* Read rest of paragraph.  */
+
+  other_indent = in_column;
+  while (same_para (c) && in_column == other_indent)
+    c = get_line (c);
+
+  (word_limit - 1)->period = (word_limit - 1)->final = true;
+  next_char = c;
+  return true;
+}
+
+/* Copy to the output a blank line.  In the latter, C is \n or EOF.
+   Return the character (\n or EOF) ending the line.  */
+
+static int
+copy_rest (register int c)
+{
+  out_column = 0;
+  while (c != '\n' && c != EOF)
+    {
+      putc (c, outfile);
+      c = GETC();
+    }
+  return c;
+}
+
+/* Return true if a line whose first non-blank character after the
+   prefix (if any) is C could belong to the current paragraph,
+   otherwise false.  */
+
+static bool
+same_para (register int c)
+{
+  return (c != '\n' && c != EOF);
+}
+
+/* Read a line from the input data given first non-blank character C
+   after the prefix, and the following indent, and break it into words.
+   A word is a maximal non-empty string of non-white characters.  A word
+   ending in [.?!]["')\]]* and followed by end-of-line or at least two
+   spaces ends a sentence, as in emacs.
+
+   Return the first non-blank character of the next line.  */
+
+static int
+get_line (register int c)
+{
+  int start;
+  register WORD *end_of_word;
+
+  end_of_word = &words[MAXWORDS - 2];
+
+  do
+    {				/* for each word in a line */
+
+      /* Scan word.  */
+
+      word_limit->text = parabuf - 1;
+      do
+	c = GETC();
+      while (c != EOF && !ISSPACE (c));
+      word_limit->length = parabuf - word_limit->text - (c != EOF);
+      in_column += word_limit->length;
+
+      check_punctuation (word_limit);
+
+      /* Scan inter-word space.  */
+
+      start = in_column;
+      c = get_space (c);
+      word_limit->space = in_column - start;
+      word_limit->final = (c == EOF
+			   || (word_limit->period
+			       && (c == '\n' || word_limit->space > 1)));
+      if (c == '\n' || c == EOF)
+	word_limit->space = word_limit->final ? 2 : 1;
+      if (word_limit == end_of_word)
+	flush_paragraph ();
+      word_limit++;
+      if (c == EOF)
+	{
+	  in_column = first_indent;
+	  return EOF;
+	}
+    }
+  while (c != '\n');
+
+  in_column = 0;
+  c = GETC();
+  return get_space (c);
+}
+
+/* Read blank characters from the input data, starting with C, and keeping
+   in_column up-to-date.  Return first non-blank character.  */
+
+static int
+get_space (register int c)
+{
+  for (;;)
+    {
+      if (c == ' ')
+	in_column++;
+      else if (c == '\t')
+	in_column = (in_column / TABWIDTH + 1) * TABWIDTH;
+      else
+	return c;
+      c = GETC();
+    }
+}
+
+/* Set extra fields in word W describing any attached punctuation.  */
+
+static void
+check_punctuation (register WORD *w)
+{
+  register const char *start, *finish;
+
+  start = w->text;
+  finish = start + (w->length - 1);
+  w->paren = isopen (*start);
+  w->punct = ISPUNCT (*finish);
+  while (isclose (*finish) && finish > start)
+    finish--;
+  w->period = isperiod (*finish);
+}
+
+/* Flush part of the paragraph to make room.  This function is called on
+   hitting the limit on the number of words or characters.  */
+
+static void
+flush_paragraph (void)
+{
+  WORD *split_point;
+  register WORD *w;
+  COST best_break;
+
+  /* - format what you have so far as a paragraph,
+     - find a low-cost line break near the end,
+     - output to there,
+     - make that the start of the paragraph.  */
+
+  fmt_paragraph ();
+
+  /* Choose a good split point.  */
+
+  split_point = word_limit;
+  best_break = MAXCOST;
+  for (w = words->next_break; w != word_limit; w = w->next_break)
+    {
+      if (w->best_cost - w->next_break->best_cost < best_break)
+	{
+	  split_point = w;
+	  best_break = w->best_cost - w->next_break->best_cost;
+	}
+      if (best_break <= MAXCOST - LINE_CREDIT)
+	best_break += LINE_CREDIT;
+    }
+  put_paragraph (split_point);
+
+  /* Copy words from split_point down to word -- we use memmove because
+     the source and target may overlap.  */
+
+  memmove ((char *) words, (char *) split_point,
+	 (word_limit - split_point + 1) * sizeof (WORD));
+  word_limit -= split_point - words;
+}
+
+/* Compute the optimal formatting for the whole paragraph by computing
+   and remembering the optimal formatting for each suffix from the empty
+   one to the whole paragraph.  */
+
+static void
+fmt_paragraph (void)
+{
+  register WORD *start, *w;
+  register int len;
+  register COST wcost, best;
+  int saved_length;
+
+  word_limit->best_cost = 0;
+  saved_length = word_limit->length;
+  word_limit->length = max_width;	/* sentinel */
+
+  for (start = word_limit - 1; start >= words; start--)
+    {
+      best = MAXCOST;
+      len = start == words ? first_indent : other_indent;
+
+      /* At least one word, however long, in the line.  */
+
+      w = start;
+      len += w->length;
+      do
+	{
+	  w++;
+
+	  /* Consider breaking before w.  */
+
+	  wcost = line_cost (w, len) + w->best_cost;
+	  if (start == words && last_line_length > 0)
+	    wcost += RAGGED_COST (len - last_line_length);
+	  if (wcost < best)
+	    {
+	      best = wcost;
+	      start->next_break = w;
+	      start->line_length = len;
+	    }
+	  len += (w - 1)->space + w->length;	/* w > start >= words */
+	}
+      while (len < max_width);
+      start->best_cost = best + base_cost (start);
+    }
+
+  word_limit->length = saved_length;
+}
+
+/* Return the constant component of the cost of breaking before the
+   word THIS.  */
+
+static COST
+base_cost (register WORD *this)
+{
+  register COST cost;
+
+  cost = LINE_COST;
+
+  if (this > words)
+    {
+      if ((this - 1)->period)
+	{
+	  if ((this - 1)->final)
+	    cost -= SENTENCE_BONUS;
+	  else
+	    cost += NOBREAK_COST;
+	}
+      else if ((this - 1)->punct)
+	cost -= PUNCT_BONUS;
+      else if (this > words + 1 && (this - 2)->final)
+	cost += WIDOW_COST ((this - 1)->length);
+    }
+
+  if (this->paren)
+    cost -= PAREN_BONUS;
+  else if (this->final)
+    cost += ORPHAN_COST (this->length);
+
+  return cost;
+}
+
+/* Return the component of the cost of breaking before word NEXT that
+   depends on LEN, the length of the line beginning there.  */
+
+static COST
+line_cost (register WORD *next, register int len)
+{
+  register int n;
+  register COST cost;
+
+  if (next == word_limit)
+    return 0;
+  n = best_width - len;
+  cost = SHORT_COST (n);
+  if (next->next_break != word_limit)
+    {
+      n = len - next->line_length;
+      cost += RAGGED_COST (n);
+    }
+  return cost;
+}
+
+/* Output to stdout a paragraph from word up to (but not including)
+   FINISH, which must be in the next_break chain from word.  */
+
+static void
+put_paragraph (register WORD *finish)
+{
+  register WORD *w;
+
+  put_line (words, first_indent);
+  for (w = words->next_break; w != finish; w = w->next_break)
+    put_line (w, other_indent);
+}
+
+/* Output to stdout the line beginning with word W, beginning in column
+   INDENT, including the prefix (if any).  */
+
+static void
+put_line (register WORD *w, int indent)
+{
+  register WORD *endline;
+  out_column = 0;
+  put_space (indent);
+
+  endline = w->next_break - 1;
+  for (; w != endline; w++)
+    {
+      put_word (w);
+      put_space (w->space);
+    }
+  put_word (w);
+  last_line_length = out_column;
+  putc ('\n', outfile);
+}
+
+/* Output to stdout the word W.  */
+
+static void
+put_word (register WORD *w)
+{
+  register const char *s;
+  register int n;
+
+  s = w->text;
+  for (n = w->length; n != 0; n--)
+    putc (*s++, outfile);
+  out_column += w->length;
+}
+
+/* Output to stdout SPACE spaces, or equivalent tabs.  */
+
+static void
+put_space (int space)
+{
+  out_column += space;
+  while (space--)
+    putc (' ', outfile);
+}
diff --git a/src/sed/sed/mbcs.c b/src/sed/sed/mbcs.c
new file mode 100644
index 0000000..3756547
--- /dev/null
+++ b/src/sed/sed/mbcs.c
@@ -0,0 +1,56 @@
+/*  GNU SED, a batch stream editor.
+    Copyright (C) 2003 Free Software Foundation, Inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2, or (at your option)
+    any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#include "sed.h"
+#include <stdlib.h>
+
+int mb_cur_max;
+
+#ifdef HAVE_MBRTOWC
+/* Add a byte to the multibyte character represented by the state
+   CUR_STAT, and answer its length if a character is completed,
+   or -2 if it is yet to be completed.  */
+int brlen (ch, cur_stat)
+     int ch;
+     mbstate_t *cur_stat;
+{
+  char c = ch;
+
+  /* If we use the generic brlen, then MBRLEN == mbrlen.  */
+  int result = mbrtowc(NULL, &c, 1, cur_stat);
+
+  /* An invalid sequence is treated like a singlebyte character. */
+  if (result == -1)
+    {
+      memset (cur_stat, 0, sizeof (mbstate_t));
+      return 1;
+    }
+
+  return result;
+}
+#endif
+
+void
+initialize_mbcs ()
+{
+#ifdef HAVE_MBRTOWC
+  mb_cur_max = MB_CUR_MAX;
+#else
+  mb_cur_max = 1;
+#endif
+}
+
diff --git a/src/sed/sed/regexp.c b/src/sed/sed/regexp.c
new file mode 100644
index 0000000..d4e7437
--- /dev/null
+++ b/src/sed/sed/regexp.c
@@ -0,0 +1,253 @@
+/*  GNU SED, a batch stream editor.
+    Copyright (C) 1999, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2, or (at your option)
+    any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#include "sed.h"
+
+#include <ctype.h>
+#include <stdio.h>
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+
+#ifdef gettext_noop
+# define N_(String) gettext_noop(String)
+#else
+# define N_(String) (String)
+#endif
+
+extern bool use_extended_syntax_p;
+
+static const char errors[] =
+  "no previous regular expression\0"
+  "cannot specify modifiers on empty regexp";
+
+#define NO_REGEX (errors)
+#define BAD_MODIF (NO_REGEX + sizeof(N_("no previous regular expression")))
+#define END_ERRORS (BAD_MODIF + sizeof(N_("cannot specify modifiers on empty regexp")))
+
+
+
+static void
+compile_regex_1 (new_regex, needed_sub)
+  struct regex *new_regex;
+  int needed_sub;
+{
+#ifdef REG_PERL
+  int errcode;
+  errcode = regncomp(&new_regex->pattern, new_regex->re, new_regex->sz,
+		     (needed_sub ? 0 : REG_NOSUB)
+		     | new_regex->flags
+		     | extended_regexp_flags);
+
+  if (errcode)
+    {
+      char errorbuf[200];
+      regerror(errcode, NULL, errorbuf, 200);
+      bad_prog(gettext(errorbuf));
+    }
+#else
+  const char *error;
+  int syntax = ((extended_regexp_flags & REG_EXTENDED)
+		 ? RE_SYNTAX_POSIX_EXTENDED
+                 : RE_SYNTAX_POSIX_BASIC)
+		 & ~RE_UNMATCHED_RIGHT_PAREN_ORD;
+
+  syntax |= RE_NO_POSIX_BACKTRACKING;
+#ifdef RE_ICASE
+  syntax |= (new_regex->flags & REG_ICASE) ? RE_ICASE : 0;
+#endif
+#ifdef RE_NO_SUB
+  syntax |= needed_sub ? 0 : RE_NO_SUB;
+#endif
+
+  new_regex->pattern.fastmap = malloc (1 << (sizeof (char) * 8));
+
+  /* If REG_NEWLINE is set, newlines are treated differently.  */
+  if (new_regex->flags & REG_NEWLINE)
+    {
+      /* REG_NEWLINE implies neither . nor [^...] match newline.  */
+      syntax &= ~RE_DOT_NEWLINE;
+      syntax |= RE_HAT_LISTS_NOT_NEWLINE;
+    }
+
+  re_set_syntax (syntax);
+  error = re_compile_pattern (new_regex->re, new_regex->sz,
+			      &new_regex->pattern);
+  new_regex->pattern.newline_anchor = (new_regex->flags & REG_NEWLINE) != 0;
+
+  new_regex->pattern.translate = NULL;
+#ifndef RE_ICASE
+  if (new_regex->flags & REG_ICASE)
+    {
+      static char translate[1 << (sizeof(char) * 8)];
+      int i;
+      for (i = 0; i < sizeof(translate) / sizeof(char); i++)
+	translate[i] = tolower (i);
+
+      new_regex->pattern.translate = translate;
+    }
+#endif
+
+  if (error)
+    bad_prog(error);
+#endif
+
+  /* Just to be sure, I mark this as not POSIXLY_CORRECT behavior */
+  if (needed_sub
+      && new_regex->pattern.re_nsub < needed_sub - 1
+      && posixicity == POSIXLY_EXTENDED)
+    {
+      char buf[200];
+      sprintf(buf, _("invalid reference \\%d on `s' command's RHS"),
+	      needed_sub - 1);
+      bad_prog(buf);
+    }
+}
+
+struct regex *
+compile_regex(b, flags, needed_sub)
+  struct buffer *b;
+  int flags;
+  int needed_sub;
+{
+  struct regex *new_regex;
+  size_t re_len;
+
+  /* // matches the last RE */
+  if (size_buffer(b) == 0)
+    {
+      if (flags > 0)
+	bad_prog(_(BAD_MODIF));
+      return NULL;
+    }
+
+  re_len = size_buffer(b);
+  new_regex = ck_malloc(sizeof (struct regex) + re_len - 1);
+  new_regex->flags = flags;
+  memcpy (new_regex->re, get_buffer(b), re_len);
+
+#ifdef REG_PERL
+  new_regex->sz = re_len;
+#else
+  /* GNU regex does not process \t & co. */
+  new_regex->sz = normalize_text(new_regex->re, re_len, TEXT_REGEX);
+#endif
+
+  compile_regex_1 (new_regex, needed_sub);
+  return new_regex;
+}
+
+#ifdef REG_PERL
+static void
+copy_regs (regs, pmatch, nregs)
+     struct re_registers *regs;
+     regmatch_t *pmatch;
+     int nregs;
+{
+  int i;
+  int need_regs = nregs + 1;
+  /* We need one extra element beyond `num_regs' for the `-1' marker GNU code
+     uses.  */
+
+  /* Have the register data arrays been allocated?  */
+  if (!regs->start)
+    { /* No.  So allocate them with malloc.  */
+      regs->start = MALLOC (need_regs, regoff_t);
+      regs->end = MALLOC (need_regs, regoff_t);
+      regs->num_regs = need_regs;
+    }
+  else if (need_regs > regs->num_regs)
+    { /* Yes.  We also need more elements than were already
+         allocated, so reallocate them.  */
+      regs->start = REALLOC (regs->start, need_regs, regoff_t);
+      regs->end = REALLOC (regs->end, need_regs, regoff_t);
+      regs->num_regs = need_regs;
+    }
+
+  /* Copy the regs.  */
+  for (i = 0; i < nregs; ++i)
+    {
+      regs->start[i] = pmatch[i].rm_so;
+      regs->end[i] = pmatch[i].rm_eo;
+    }
+  for ( ; i < regs->num_regs; ++i)
+    regs->start[i] = regs->end[i] = -1;
+}
+#endif
+
+int
+match_regex(regex, buf, buflen, buf_start_offset, regarray, regsize)
+  struct regex *regex;
+  char *buf;
+  size_t buflen;
+  size_t buf_start_offset;
+  struct re_registers *regarray;
+  int regsize;
+{
+  int ret;
+  static struct regex *regex_last;
+#ifdef REG_PERL
+  regmatch_t rm[10], *regmatch = rm;
+  if (regsize > 10)
+    regmatch = (regmatch_t *) alloca (sizeof (regmatch_t) * regsize);
+#endif
+
+  /* printf ("Matching from %d/%d\n", buf_start_offset, buflen); */
+
+  /* Keep track of the last regexp matched. */
+  if (!regex)
+    {
+      regex = regex_last;
+      if (!regex_last)
+	bad_prog(_(NO_REGEX));
+    }
+  else
+    regex_last = regex;
+
+#ifdef REG_PERL
+  regmatch[0].rm_so = CAST(int)buf_start_offset;
+  regmatch[0].rm_eo = CAST(int)buflen;
+  ret = regexec (&regex->pattern, buf, regsize, regmatch, REG_STARTEND);
+
+  if (regsize)
+    copy_regs (regarray, regmatch, regsize);
+
+  return (ret == 0);
+#else
+  if (regex->pattern.no_sub && regsize)
+    compile_regex_1 (regex, regsize);
+
+  regex->pattern.regs_allocated = REGS_REALLOCATE;
+
+  ret = re_search (&regex->pattern, buf, buflen, buf_start_offset,
+		   buflen - buf_start_offset,
+		   regsize ? regarray : NULL);
+
+  return (ret > -1);
+#endif
+}
+
+
+#ifdef DEBUG_LEAKS
+void
+release_regex(regex)
+  struct regex *regex;
+{
+  regfree(&regex->pattern);
+  FREE(regex);
+}
+#endif /*DEBUG_LEAKS*/
diff --git a/src/sed/sed/sed.c b/src/sed/sed/sed.c
new file mode 100644
index 0000000..b3bc2ea
--- /dev/null
+++ b/src/sed/sed/sed.c
@@ -0,0 +1,455 @@
+#define COPYRIGHT_NOTICE "Copyright (C) 2003 Free Software Foundation, Inc."
+#define BUG_ADDRESS "bonzini@gnu.org"
+
+/*  GNU SED, a batch stream editor.
+    Copyright (C) 1989,90,91,92,93,94,95,98,99,2002,2003
+    Free Software Foundation, Inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2, or (at your option)
+    any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+
+#include "sed.h"
+
+
+#include <stdio.h>
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#else
+# include <string.h>
+#endif /*HAVE_STRINGS_H*/
+#ifdef HAVE_MEMORY_H
+# include <memory.h>
+#endif
+
+#ifndef HAVE_STRCHR
+# define strchr index
+# define strrchr rindex
+#endif
+
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#include "getopt.h"
+
+#ifndef BOOTSTRAP
+#ifndef HAVE_STDLIB_H
+ extern char *getenv P_((const char *));
+#endif
+#endif
+
+#ifndef HAVE_STRTOUL
+# define ATOI(x)	atoi(x)
+#else
+# define ATOI(x)	strtoul(x, NULL, 0)
+#endif
+
+int extended_regexp_flags = 0;
+
+#ifndef CONFIG_WITHOUT_O_OPT
+/* The output file, defaults to stdout but can be overridden
+   by the -o or --output option. main sets this to avoid problems. */
+FILE *sed_stdout = NULL;
+#endif
+
+/* If set, fflush(stdout) on every line output. */
+bool unbuffered_output = false;
+
+/* If set, don't write out the line unless explicitly told to */
+bool no_default_output = false;
+
+/* If set, reset line counts on every new file. */
+bool separate_files = false;
+
+/* How do we edit files in-place? (we don't if NULL) */
+char *in_place_extension = NULL;
+
+/* Do we need to be pedantically POSIX compliant? */
+enum posixicity_types posixicity;
+
+/* How long should the `l' command's output line be? */
+countT lcmd_out_line_len = 70;
+
+/* The complete compiled SED program that we are going to run: */
+static struct vector *the_program = NULL;
+
+static void usage P_((int));
+static void
+usage(status)
+  int status;
+{
+  FILE *out = status ? stderr : stdout;
+
+#ifdef REG_PERL
+#define PERL_HELP _("  -R, --regexp-perl\n                 use Perl 5's regular expressions syntax in the script.\n")
+#else
+#define PERL_HELP ""
+#endif
+
+  fprintf(out, _("\
+Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n\
+\n"), myname);
+
+  fprintf(out, _("  -n, --quiet, --silent\n\
+                 suppress automatic printing of pattern space\n"));
+  fprintf(out, _("  -e script, --expression=script\n\
+                 add the script to the commands to be executed\n"));
+  fprintf(out, _("  -f script-file, --file=script-file\n\
+                 add the contents of script-file to the commands to be executed\n"));
+  fprintf(out, _("  -i[SUFFIX], --in-place[=SUFFIX]\n\
+                 edit files in place (makes backup if extension supplied)\n"));
+  fprintf(out, _("  -l N, --line-length=N\n\
+                 specify the desired line-wrap length for the `l' command\n"));
+#ifndef CONFIG_WITHOUT_O_LANG_C
+  fprintf(out, _("  --codepage=N\n\
+                 switches the locale to the given codepage, affecting how\n\
+                 input files are treated and outputted\n\
+                 windows only, ignored elsewhere\n"));
+# if _MSC_VER >= 1900
+  fprintf(out, _("  --utf8\n\
+                 alias for --codepage=.UTF-8\n"));
+# endif
+  fprintf(out, _("  --lang_c\n\
+                 specify C locale\n"));
+#endif
+  fprintf(out, _("  --posix\n\
+                 disable all GNU extensions.\n"));
+#ifndef CONFIG_WITHOUT_O_OPT
+  fprintf(out, _("  -o, --output=file, --append=file, --output-text=file,\n"));
+  fprintf(out, _("  --output-binary=file, --append-text=file, append-binary=file\n\
+                 use the specified file instead of stdout; the first\n\
+                 three uses the default text/binary mode.\n"));
+#endif
+  fprintf(out, _("  -r, --regexp-extended\n\
+                 use extended regular expressions in the script.\n"));
+  fprintf(out, "%s", PERL_HELP);
+  fprintf(out, _("  -s, --separate\n\
+                 consider files as separate rather than as a single continuous\n\
+                 long stream.\n"));
+  fprintf(out, _("  -u, --unbuffered\n\
+                 load minimal amounts of data from the input files and flush\n\
+                 the output buffers more often\n"));
+  fprintf(out, _("      --help     display this help and exit\n"));
+  fprintf(out, _("      --version  output version information and exit\n"));
+  fprintf(out, _("\n\
+If no -e, --expression, -f, or --file option is given, then the first\n\
+non-option argument is taken as the sed script to interpret.  All\n\
+remaining arguments are names of input files; if no input files are\n\
+specified, then the standard input is read.\n\
+\n"));
+  fprintf(out, _("E-mail bug reports to: %s .\n\
+Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"),
+	  BUG_ADDRESS, PACKAGE);
+
+  ck_fclose (NULL);
+  exit (status);
+}
+
+int
+main(argc, argv)
+  int argc;
+  char **argv;
+{
+#ifdef REG_PERL
+# ifndef CONFIG_WITHOUT_O_OPT
+#define SHORTOPTS "snrRue:f:l:i::o:V:"
+# else
+#define SHORTOPTS "snrRue:f:l:i::V:"
+# endif
+#else
+# ifndef CONFIG_WITHOUT_O_OPT
+#define SHORTOPTS "snrue:f:l:i::o:V:"
+# else
+#define SHORTOPTS "snrue:f:l:i::V:"
+# endif
+#endif
+
+  static struct option longopts[] = {
+    {"regexp-extended", 0, NULL, 'r'},
+#ifdef REG_PERL
+    {"regexp-perl", 0, NULL, 'R'},
+#endif
+    {"expression", 1, NULL, 'e'},
+    {"file", 1, NULL, 'f'},
+    {"in-place", 2, NULL, 'i'},
+    {"line-length", 1, NULL, 'l'},
+#ifndef CONFIG_WITHOUT_O_LANG_C
+    {"lang_c", 0, NULL, 'L'},
+    {"codepage", 1, NULL, 305},
+    {"utf8", 0, NULL, 306},
+#endif
+    {"quiet", 0, NULL, 'n'},
+    {"posix", 0, NULL, 'p'},
+    {"silent", 0, NULL, 'n'},
+    {"separate", 0, NULL, 's'},
+    {"unbuffered", 0, NULL, 'u'},
+#ifndef CONFIG_WITHOUT_O_OPT
+    {"output", 1, NULL, 'o'},
+    {"output-binary", 1, NULL, 300},
+    {"output-text", 1, NULL, 301},
+    {"append", 1, NULL, 302},
+    {"append-binary", 1, NULL, 303},
+    {"append-text", 1, NULL, 304},
+#endif
+    {"version", 0, NULL, 'v'},
+    {"help", 0, NULL, 'h'},
+    {NULL, 0, NULL, 0}
+  };
+
+  int opt;
+  int return_code;
+  const char *cols = getenv("COLS");
+#ifdef KBUILD_OS_WINDOWS
+  const char *locale;
+#endif
+
+  initialize_main (&argc, &argv);
+#ifndef CONFIG_WITHOUT_O_OPT
+  sed_stdout = stdout;
+#endif
+#if HAVE_SETLOCALE
+# ifdef KBUILD_OS_WINDOWS
+  locale = setlocale (LC_ALL, "");
+  if (getenv("KMK_SED_CODEPAGE_DEBUG"))
+    fprintf (stderr, "kmk_sed: codepage=%u locale=%s ACP=%u\n",
+             get_crt_codepage(), locale, get_ansi_codepage());
+# else
+  setlocale (LC_ALL, "");
+# endif
+#endif
+  initialize_mbcs ();
+
+#if ENABLE_NLS
+
+  /* Tell program which translations to use and where to find.  */
+  bindtextdomain (PACKAGE, LOCALEDIR);
+  textdomain (PACKAGE);
+#endif
+
+  if (getenv("POSIXLY_CORRECT") != NULL)
+    posixicity = POSIXLY_CORRECT;
+  else
+    posixicity = POSIXLY_EXTENDED;
+
+  /* If environment variable `COLS' is set, use its value for
+     the baseline setting of `lcmd_out_line_len'.  The "-1"
+     is to avoid gratuitous auto-line-wrap on ttys.
+   */
+  if (cols)
+    {
+      countT t = ATOI(cols);
+      if (t > 1)
+	lcmd_out_line_len = t-1;
+    }
+
+  myname = *argv;
+  while ((opt = getopt_long(argc, argv, SHORTOPTS, longopts, NULL)) != EOF)
+    {
+      switch (opt)
+	{
+	case 'n':
+	  no_default_output = true;
+	  break;
+	case 'e':
+	  the_program = compile_string(the_program, optarg, strlen(optarg));
+	  break;
+	case 'f':
+	  the_program = compile_file(the_program, optarg);
+	  break;
+
+	case 'i':
+	  separate_files = true;
+	  if (optarg == NULL)
+	    /* use no backups */
+	    in_place_extension = ck_strdup ("*");
+
+	  else if (strchr(optarg, '*') != NULL)
+	    in_place_extension = ck_strdup(optarg);
+
+	  else
+	    {
+	      in_place_extension = MALLOC (strlen(optarg) + 2, char);
+	      in_place_extension[0] = '*';
+	      strcpy (in_place_extension + 1, optarg);
+	    }
+
+	  break;
+
+	case 'l':
+	  lcmd_out_line_len = ATOI(optarg);
+	  break;
+
+#ifndef CONFIG_WITHOUT_O_LANG_C
+	case 'L':
+# ifdef KBUILD_OS_WINDOWS
+	  locale = setlocale (LC_ALL, "C");
+          if (getenv("KMK_SED_CODEPAGE_DEBUG"))
+            fprintf (stderr, "kmk_sed: codepage=%u locale=%s ACP=%u\n",
+                     get_crt_codepage(), locale, get_ansi_codepage());
+# else
+	  setlocale (LC_ALL, "C");
+# endif
+	  initialize_mbcs ();
+# if ENABLE_NLS
+	  bindtextdomain (PACKAGE, LOCALEDIR);
+	  textdomain (PACKAGE);
+# endif
+	  break;
+
+        case 306: /* --codepage=N */
+# if _MSC_VER < 1900
+          break; /* does not work, so ignore */
+# else
+          optarg = ".UTF-8";
+# endif
+          /* fall through */
+        case 305: /* --codepage=N */
+          {
+# ifdef KBUILD_OS_WINDOWS
+            char szTmp[64];
+            if (optarg[0] != '.')
+                optarg = strncat (strcpy (szTmp, "."), optarg, sizeof (szTmp) - 1);
+            locale = setlocale (LC_ALL, optarg);
+            if (locale == NULL)
+              fprintf (stderr,
+                       _("%s: warning: setlocale (LC_ALL, \"%s\") failed: %d\n"),
+                       myname, optarg, errno);
+            else if (getenv("KMK_SED_CODEPAGE_DEBUG"))
+              fprintf (stderr, "kmk_sed: codepage=%u locale=%s ACP=%u\n",
+                       get_crt_codepage(), locale, get_ansi_codepage());
+            initialize_mbcs();
+#  if ENABLE_NLS
+            bindtextdomain (PACKAGE, LOCALEDIR);
+            textdomain (PACKAGE);
+#  endif
+# endif
+            break;
+          }
+#endif
+
+#ifndef CONFIG_WITHOUT_O_OPT
+	case 'o':
+	  sed_stdout = ck_fopen (optarg, "w", true /* fail on error */);
+	  break;
+
+	case 300:
+	  sed_stdout = ck_fopen (optarg, "wb", true /* fail on error */);
+	  break;
+
+	case 301:
+	  sed_stdout = ck_fopen (optarg, "wt", true /* fail on error */);
+	  break;
+
+	case 302:
+	  sed_stdout = ck_fopen (optarg, "a", true /* fail on error */);
+	  break;
+
+	case 303:
+	  sed_stdout = ck_fopen (optarg, "ab", true /* fail on error */);
+	  break;
+
+	case 304:
+	  sed_stdout = ck_fopen (optarg, "at", true /* fail on error */);
+	  break;
+#endif
+
+	case 'p':
+	  posixicity = POSIXLY_BASIC;
+	  break;
+
+	case 'r':
+	  if (extended_regexp_flags)
+	    usage(4);
+	  extended_regexp_flags = REG_EXTENDED;
+	  break;
+
+#ifdef REG_PERL
+	case 'R':
+	  if (extended_regexp_flags)
+	    usage(4);
+	  extended_regexp_flags = REG_PERL;
+	  break;
+#endif
+
+	case 's':
+	  separate_files = true;
+	  break;
+
+	case 'u':
+	  unbuffered_output = true;
+	  break;
+
+	case 'v':
+#ifdef KBUILD_VERSION_MAJOR
+	  fprintf(stdout, _("kmk_sed - kBuild version %d.%d.%d\n"
+                            "\n"
+                            "Based on "),
+	          KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH);
+#endif
+#ifdef REG_PERL
+	  fprintf(stdout, _("super-sed version %s\n"), VERSION);
+	  fprintf(stdout, _("based on GNU sed version %s\n\n"), SED_FEATURE_VERSION);
+#else
+	  fprintf(stdout, _("GNU sed version %s\n"), VERSION);
+#endif
+	  fprintf(stdout, _("%s\n\
+This is free software; see the source for copying conditions.  There is NO\n\
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,\n\
+to the extent permitted by law.\n\
+"), COPYRIGHT_NOTICE);
+
+	  ck_fclose (NULL);
+	  exit (0);
+	case 'h':
+	  usage(0);
+          break;
+	default:
+	  usage(4);
+	}
+    }
+
+  if (!the_program)
+    {
+      if (optind < argc)
+	{
+	  char *arg = argv[optind++];
+	  the_program = compile_string(the_program, arg, strlen(arg));
+	}
+      else
+	usage(4);
+    }
+  check_final_program(the_program);
+
+  return_code = process_files(the_program, argv+optind);
+
+  finish_program(the_program);
+  ck_fclose(NULL);
+
+  return return_code;
+}
+
+#ifdef __HAIKU__ /* mbrtowc is busted, just stub it and pray the input won't ever acutally be multibyte... */
+size_t mbrtowc(wchar_t *pwc, const char *pch, size_t n, mbstate_t *ps)
+{
+    if (!n) 
+        return 0;
+    if (pwc)
+        *pwc = *pch;
+    return 1;
+}
+#endif
diff --git a/src/sed/sed/sed.h b/src/sed/sed/sed.h
new file mode 100644
index 0000000..78bd937
--- /dev/null
+++ b/src/sed/sed/sed.h
@@ -0,0 +1,275 @@
+/*  GNU SED, a batch stream editor.
+    Copyright (C) 1989,90,91,92,93,94,95,98,99,2002,2003
+    Free Software Foundation, Inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2, or (at your option)
+    any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "basicdefs.h"
+#include "regex.h"
+
+#ifndef BOOTSTRAP
+#include <stdio.h>
+#endif
+
+#include "utils.h"
+
+/* Struct vector is used to describe a compiled sed program. */
+struct vector {
+  struct sed_cmd *v;	/* a dynamically allocated array */
+  size_t v_allocated;	/* ... number slots allocated */
+  size_t v_length;	/* ... number of slots in use */
+};
+
+/* This structure tracks files used by sed so that they may all be
+   closed cleanly at normal program termination.  A flag is kept that tells
+   if a missing newline was encountered, so that it is added on the
+   next line and the two lines are not concatenated.  */
+struct output {
+  char *name;
+  bool missing_newline;
+  FILE *fp;
+  struct output *link;
+};
+
+struct text_buf {
+  char *text;
+  size_t text_length;
+};
+
+struct regex {
+  regex_t pattern;
+  int flags;
+  size_t sz;
+  char re[1];
+};
+  
+enum replacement_types {
+  REPL_ASIS = 0,
+  REPL_UPPERCASE = 1,
+  REPL_LOWERCASE = 2,
+  REPL_UPPERCASE_FIRST = 4,
+  REPL_LOWERCASE_FIRST = 8,
+  REPL_MODIFIERS = REPL_UPPERCASE_FIRST | REPL_LOWERCASE_FIRST,
+
+  /* These are given to aid in debugging */
+  REPL_UPPERCASE_UPPERCASE = REPL_UPPERCASE_FIRST | REPL_UPPERCASE,
+  REPL_UPPERCASE_LOWERCASE = REPL_UPPERCASE_FIRST | REPL_LOWERCASE,
+  REPL_LOWERCASE_UPPERCASE = REPL_LOWERCASE_FIRST | REPL_UPPERCASE,
+  REPL_LOWERCASE_LOWERCASE = REPL_LOWERCASE_FIRST | REPL_LOWERCASE
+};
+
+enum text_types {
+  TEXT_BUFFER,
+  TEXT_REPLACEMENT,
+  TEXT_REGEX
+};
+
+enum posixicity_types {
+  POSIXLY_EXTENDED,	/* with GNU extensions */
+  POSIXLY_CORRECT,	/* with POSIX-compatible GNU extensions */
+  POSIXLY_BASIC		/* pedantically POSIX */
+};
+
+enum addr_state {
+  RANGE_INACTIVE,	/* never been active */
+  RANGE_ACTIVE,		/* between first and second address */
+  RANGE_CLOSED		/* like RANGE_INACTIVE, but range has ended once */
+};
+
+enum addr_types {
+  ADDR_IS_NULL,		/* null address */
+  ADDR_IS_REGEX,	/* a.addr_regex is valid */
+  ADDR_IS_NUM,		/* a.addr_number is valid */
+  ADDR_IS_NUM_MOD,	/* a.addr_number is valid, addr_step is modulo */
+  ADDR_IS_STEP,		/* address is +N (only valid for addr2) */
+  ADDR_IS_STEP_MOD,	/* address is ~N (only valid for addr2) */
+  ADDR_IS_LAST		/* address is $ */
+};
+
+struct addr {
+  enum addr_types addr_type;
+  countT addr_number;
+  countT addr_step;
+  struct regex *addr_regex;
+};
+
+
+struct replacement {
+  char *prefix;
+  size_t prefix_length;
+  int subst_id;
+  enum replacement_types repl_type;
+  struct replacement *next;
+};
+
+struct subst {
+  struct regex *regx;
+  struct replacement *replacement;
+  countT numb;		/* if >0, only substitute for match number "numb" */
+  struct output *outf;	/* 'w' option given */
+  unsigned global : 1;	/* 'g' option given */
+  unsigned print : 2;	/* 'p' option given (before/after eval) */
+  unsigned eval : 1;	/* 'e' option given */
+  unsigned max_id : 4;  /* maximum backreference on the RHS */
+};
+
+#ifdef REG_PERL
+/* This is the structure we store register match data in.  See
+   regex.texinfo for a full description of what registers match.  */
+struct re_registers
+{
+  unsigned num_regs;
+  regoff_t *start;
+  regoff_t *end;
+};
+#endif
+
+
+
+struct sed_cmd {
+  struct addr *a1;	/* save space: usually is NULL */
+  struct addr *a2;
+
+  /* See description the enum, above.  */
+  enum addr_state range_state;
+
+  /* Non-zero if command is to be applied to non-matches. */
+  char addr_bang;
+
+  /* The actual command character. */
+  char cmd;
+
+  /* auxiliary data for various commands */
+  union {
+    /* This structure is used for a, i, and c commands. */
+    struct text_buf cmd_txt;
+
+    /* This is used for the l, q and Q commands. */
+    int int_arg;
+
+    /* This is used for the {}, b, and t commands. */
+    countT jump_index;
+
+    /* This is used for the r command. */
+    char *fname;
+
+    /* This is used for the hairy s command. */
+    struct subst *cmd_subst;
+
+    /* This is used for the w command. */
+    struct output *outf;
+
+    /* This is used for the R command. */
+    FILE *fp;
+
+    /* This is used for the y command. */
+    unsigned char *translate;
+    char **translatemb;
+  } x;
+};
+
+
+
+void bad_prog P_((const char *why));
+size_t normalize_text P_((char *text, size_t len, enum text_types buftype));
+struct vector *compile_string P_((struct vector *, char *str, size_t len));
+struct vector *compile_file P_((struct vector *, const char *cmdfile));
+void check_final_program P_((struct vector *));
+void rewind_read_files P_((void));
+void finish_program P_((struct vector *));
+
+struct regex *compile_regex P_((struct buffer *b, int flags, int needed_sub));
+int match_regex P_((struct regex *regex,
+		    char *buf, size_t buflen, size_t buf_start_offset,
+		    struct re_registers *regarray, int regsize));
+#ifdef DEBUG_LEAKS
+void release_regex P_((struct regex *));
+#endif
+
+int process_files P_((struct vector *, char **argv));
+
+int main P_((int, char **));
+
+extern void fmt P_ ((const char *line, const char *line_end, int max_length, FILE *output_file));
+
+extern int extended_regexp_flags;
+
+#ifndef CONFIG_WITHOUT_O_OPT
+/* The output file, defaults to stdout but can be overridden
+   by the -o or --output option. main sets this to avoid problems. */
+extern FILE *sed_stdout;
+#endif
+
+/* If set, fflush(stdout) on every line output. */
+extern bool unbuffered_output;
+
+/* If set, don't write out the line unless explicitly told to. */
+extern bool no_default_output;
+
+/* If set, reset line counts on every new file. */
+extern bool separate_files;
+
+/* Do we need to be pedantically POSIX compliant? */
+extern enum posixicity_types posixicity;
+
+/* How long should the `l' command's output line be? */
+extern countT lcmd_out_line_len;
+
+/* How do we edit files in-place? (we don't if NULL) */
+extern char *in_place_extension;
+
+/* Should we use EREs? */
+extern bool use_extended_syntax_p;
+
+/* Declarations for multibyte character sets.  */
+extern int mb_cur_max;
+
+#ifdef HAVE_MBRTOWC
+#ifdef HAVE_BTOWC
+#define MBRTOWC(pwc, s, n, ps) \
+  (mb_cur_max == 1 ? \
+   (*(pwc) = btowc (*(unsigned char *) (s)), 1) : \
+   mbrtowc ((pwc), (s), (n), (ps)))
+
+#define WCRTOMB(s, wc, ps) \
+  (mb_cur_max == 1 ? \
+   (*(s) = wctob ((wint_t) (wc)), 1) : \
+   wcrtomb ((s), (wc), (ps)))
+#else
+#define MBRTOWC(pwc, s, n, ps) \
+  mbrtowc ((pwc), (s), (n), (ps))
+
+#define WCRTOMB(s, wc, ps) \
+  wcrtomb ((s), (wc), (ps))
+#endif
+
+#define MBRLEN(s, n, ps) \
+  (mb_cur_max == 1 ? 1 : mbrtowc (NULL, s, n, ps))
+
+#define BRLEN(ch, ps) \
+  (mb_cur_max == 1 ? 1 : brlen (ch, ps))
+
+#else
+#define MBRLEN(s, n, ps) 1
+#define BRLEN(ch, ps) 1
+#endif
+
+extern int brlen P_ ((int ch, mbstate_t *ps));
+extern void initialize_mbcs P_ ((void));
+
diff --git a/src/sed/testsuite/0range.good b/src/sed/testsuite/0range.good
new file mode 100644
index 0000000..7cfab5b
--- /dev/null
+++ b/src/sed/testsuite/0range.good
@@ -0,0 +1 @@
+yes
diff --git a/src/sed/testsuite/0range.inp b/src/sed/testsuite/0range.inp
new file mode 100644
index 0000000..c09c47b
--- /dev/null
+++ b/src/sed/testsuite/0range.inp
@@ -0,0 +1,6 @@
+1
+2
+3
+4
+aaa
+yes
diff --git a/src/sed/testsuite/0range.sed b/src/sed/testsuite/0range.sed
new file mode 100644
index 0000000..33aa8b8
--- /dev/null
+++ b/src/sed/testsuite/0range.sed
@@ -0,0 +1 @@
+0,/aaa/d
diff --git a/src/sed/testsuite/8bit.good b/src/sed/testsuite/8bit.good
new file mode 100644
index 0000000..1bd5178
--- /dev/null
+++ b/src/sed/testsuite/8bit.good
@@ -0,0 +1,9 @@
+äƤâ¤è ¤ßäÆ»ý¤Á
+·¡¶ú¤â¤è ¤ß·¡¶ú»ý¤Á
+¤³¤ÎµÖ¤Ë ºÚŦ¤Þ¤¹»ù
+²È´Ö¤«¤Ê ¹ð¤é¤µ¤Í
+¤½¤é¤ß¤Ä ÆüËܤιñ¤Ï
+¤ª¤·¤ã¤Ê¤Ù¤Æ ¤ï¤ì¤³¤½µï¤ì
+¤·¤­¤Ê¤Ù¤Æ ¤ï¤ì¤³¤½ ºÂ¤»
+¤ï¤Ë¤³¤½¤Ï ¹ð¤é¤á
+²È¤ò¤â̾¤ò¤â
diff --git a/src/sed/testsuite/8bit.inp b/src/sed/testsuite/8bit.inp
new file mode 100644
index 0000000..8c9c4bb
--- /dev/null
+++ b/src/sed/testsuite/8bit.inp
@@ -0,0 +1,9 @@
+äƤâ¤è ¤ßäÆ»ý¤Á
+·¡¶ú¤â¤è ¤ß·¡¶ú»ý¤Á
+¤³¤ÎµÖ¤Ë ºÚŦ¤Þ¤¹»ù
+²È´Ö¤«¤Ê ¹ð¤é¤µ¤Í
+¤½¤é¤ß¤Ä ÂçϤιñ¤Ï
+¤ª¤·¤ã¤Ê¤Ù¤Æ ¤ï¤ì¤³¤½µï¤ì
+¤·¤­¤Ê¤Ù¤Æ ¤ï¤ì¤³¤½ ºÂ¤»
+¤ï¤Ë¤³¤½¤Ï ¹ð¤é¤á
+²È¤ò¤â̾¤ò¤â
diff --git a/src/sed/testsuite/8bit.sed b/src/sed/testsuite/8bit.sed
new file mode 100644
index 0000000..7b3ed8d
--- /dev/null
+++ b/src/sed/testsuite/8bit.sed
@@ -0,0 +1,21 @@
+# The first poem from the Man'yoshu.  I like Hitomaro's poems better
+# but I couldn't find a copy of any of them in Japanese.  This version
+# of this poem is from $BNc2r8E8l<-E5(B($BBh;0HG(B)$B;0>JF2(B.
+#
+# Speaking of Hitomaro, here is the english translation of one of my
+# favorites.  I just know that everyone reading these test cases wants
+# to see this.
+#
+#  In the autumn mountains
+#  The yellow leaves are so thick.
+#  Alas, how shall I seek my love
+#  Who has wandered away?
+#
+#  I see the messenger come
+#  As the yellow leaves are falling.
+#  Oh, well I remember
+#  How on such a day we used to meet--
+#  My lover and I!
+#       -- Kakinomoto Hitomaro 
+#
+s/ÂçÏÂ/ÆüËÜ/
diff --git a/src/sed/testsuite/8to7.good b/src/sed/testsuite/8to7.good
new file mode 100644
index 0000000..4485882
--- /dev/null
+++ b/src/sed/testsuite/8to7.good
@@ -0,0 +1,14 @@
+\344\306\244\342\244\350 \244\337\344\306\273\375\244\301$
+\267\241\266\372\244\342\244\350 \244\337\267\241\266\372\273\375\244\
+\301$
+\244\263\244\316\265\326\244\313 \272\332\305\246\244\336\244\271\273\
+\371$
+\262\310\264\326\244\253\244\312 \271\360\244\351\244\265\244\315$
+\244\275\244\351\244\337\244\304 \302\347\317\302\244\316\271\361\244\
+\317$
+\244\252\244\267\244\343\244\312\244\331\244\306 \244\357\244\354\244\
+\263\244\275\265\357\244\354$
+\244\267\244\255\244\312\244\331\244\306 \244\357\244\354\244\263\244\
+\275 \272\302\244\273$
+\244\357\244\313\244\263\244\275\244\317 \271\360\244\351\244\341$
+\262\310\244\362\244\342\314\276\244\362\244\342$
diff --git a/src/sed/testsuite/8to7.inp b/src/sed/testsuite/8to7.inp
new file mode 100644
index 0000000..8c9c4bb
--- /dev/null
+++ b/src/sed/testsuite/8to7.inp
@@ -0,0 +1,9 @@
+äƤâ¤è ¤ßäÆ»ý¤Á
+·¡¶ú¤â¤è ¤ß·¡¶ú»ý¤Á
+¤³¤ÎµÖ¤Ë ºÚŦ¤Þ¤¹»ù
+²È´Ö¤«¤Ê ¹ð¤é¤µ¤Í
+¤½¤é¤ß¤Ä ÂçϤιñ¤Ï
+¤ª¤·¤ã¤Ê¤Ù¤Æ ¤ï¤ì¤³¤½µï¤ì
+¤·¤­¤Ê¤Ù¤Æ ¤ï¤ì¤³¤½ ºÂ¤»
+¤ï¤Ë¤³¤½¤Ï ¹ð¤é¤á
+²È¤ò¤â̾¤ò¤â
diff --git a/src/sed/testsuite/8to7.sed b/src/sed/testsuite/8to7.sed
new file mode 100644
index 0000000..f9d3f50
--- /dev/null
+++ b/src/sed/testsuite/8to7.sed
@@ -0,0 +1 @@
+l;d
diff --git a/src/sed/testsuite/BOOST.tests b/src/sed/testsuite/BOOST.tests
new file mode 100644
index 0000000..98fd3b6
--- /dev/null
+++ b/src/sed/testsuite/BOOST.tests
@@ -0,0 +1,829 @@
+; 
+; 
+; this file contains a script of tests to run through regress.exe
+;
+; comments start with a semicolon and proceed to the end of the line
+;
+; changes to regular expression compile flags start with a "-" as the first
+; non-whitespace character and consist of a list of the printable names
+; of the flags, for example "match_default"
+;
+; Other lines contain a test to perform using the current flag status
+; the first token contains the expression to compile, the second the string
+; to match it against. If the second string is "!" then the expression should
+; not compile, that is the first string is an invalid regular expression.
+; This is then followed by a list of integers that specify what should match,
+; each pair represents the starting and ending positions of a subexpression
+; starting with the zeroth subexpression (the whole match).
+; A value of -1 indicates that the subexpression should not take part in the
+; match at all, if the first value is -1 then no part of the expression should
+; match the string.
+;
+; Tests taken from BOOST testsuite and adapted to glibc regex.
+;
+; Boost Software License - Version 1.0 - August 17th, 2003
+;
+; Permission is hereby granted, free of charge, to any person or organization
+; obtaining a copy of the software and accompanying documentation covered by
+; this license (the "Software") to use, reproduce, display, distribute,
+; execute, and transmit the Software, and to prepare derivative works of the
+; Software, and to permit third-parties to whom the Software is furnished to
+; do so, all subject to the following:
+;
+; The copyright notices in the Software and this entire statement, including
+; the above license grant, this restriction and the following disclaimer,
+; must be included in all copies of the Software, in whole or in part, and
+; all derivative works of the Software, unless such copies or derivative
+; works are solely in the form of machine-executable object code generated by
+; a source language processor.
+;
+; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+; FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+; SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+; FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+; ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+; DEALINGS IN THE SOFTWARE.
+;
+
+- match_default normal REG_EXTENDED
+
+;
+; try some really simple literals:
+a a 0 1
+Z Z 0 1
+Z aaa -1 -1
+Z xxxxZZxxx 4 5
+
+; and some simple brackets:
+(a) zzzaazz 3 4 3 4
+() zzz 0 0 0 0
+() "" 0 0 0 0
+( !
+) ) 0 1
+(aa !
+aa) baa)b 1 4
+a b -1 -1
+\(\) () 0 2
+\(a\) (a) 0 3
+\() () 0 2
+(\) !
+p(a)rameter ABCparameterXYZ 3 12 4 5
+[pq](a)rameter ABCparameterXYZ 3 12 4 5
+
+; now try escaped brackets:
+- match_default bk_parens REG_BASIC
+\(a\) zzzaazz 3 4 3 4
+\(\) zzz 0 0 0 0
+\(\) "" 0 0 0 0
+\( !
+\) !
+\(aa !
+aa\) !
+() () 0 2
+(a) (a) 0 3
+(\) !
+\() !
+
+; now move on to "." wildcards
+- match_default normal REG_EXTENDED REG_STARTEND
+. a 0 1
+. \n 0 1
+. \r 0 1
+. \0 0 1
+
+;
+; now move on to the repetion ops,
+; starting with operator *
+- match_default normal REG_EXTENDED
+a* b 0 0
+ab* a 0 1
+ab* ab 0 2
+ab* sssabbbbbbsss 3 10
+ab*c* a 0 1
+ab*c* abbb 0 4
+ab*c* accc 0 4
+ab*c* abbcc 0 5
+*a !
+\<* !
+\>* !
+\n* \n\n 0 2
+\** ** 0 2
+\* * 0 1
+
+; now try operator +
+ab+ a -1 -1
+ab+ ab 0 2
+ab+ sssabbbbbbsss 3 10
+ab+c+ a -1 -1
+ab+c+ abbb -1 -1
+ab+c+ accc -1 -1
+ab+c+ abbcc 0 5
++a !
+\<+ !
+\>+ !
+\n+ \n\n 0 2
+\+ + 0 1
+\+ ++ 0 1
+\++ ++ 0 2
+
+; now try operator ?
+- match_default normal REG_EXTENDED
+a? b 0 0
+ab? a 0 1
+ab? ab 0 2
+ab? sssabbbbbbsss 3 5
+ab?c? a 0 1
+ab?c? abbb 0 2
+ab?c? accc 0 2
+ab?c? abcc 0 3
+?a !
+\<? !
+\>? !
+\n? \n\n 0 1
+\? ? 0 1
+\? ?? 0 1
+\?? ?? 0 1
+
+; now try operator {}
+- match_default normal REG_EXTENDED
+a{2} a -1 -1
+a{2} aa 0 2
+a{2} aaa 0 2
+a{2,} a -1 -1
+a{2,} aa 0 2
+a{2,} aaaaa 0 5
+a{2,4} a -1 -1
+a{2,4} aa 0 2
+a{2,4} aaa 0 3
+a{2,4} aaaa 0 4
+a{2,4} aaaaa 0 4
+a{} !
+a{2 !
+a} a} 0 2
+\{\} {} 0 2
+
+- match_default normal REG_BASIC
+a\{2\} a -1 -1
+a\{2\} aa 0 2
+a\{2\} aaa 0 2
+a\{2,\} a -1 -1
+a\{2,\} aa 0 2
+a\{2,\} aaaaa 0 5
+a\{2,4\} a -1 -1
+a\{2,4\} aa 0 2
+a\{2,4\} aaa 0 3
+a\{2,4\} aaaa 0 4
+a\{2,4\} aaaaa 0 4
+{} {} 0 2
+
+; now test the alternation operator |
+- match_default normal REG_EXTENDED
+a|b a 0 1
+a|b b 0 1
+a(b|c) ab 0 2 1 2
+a(b|c) ac 0 2 1 2
+a(b|c) ad -1 -1 -1 -1
+a\| a| 0 2
+
+; now test the set operator []
+- match_default normal REG_EXTENDED
+; try some literals first
+[abc] a 0 1
+[abc] b 0 1
+[abc] c 0 1
+[abc] d -1 -1
+[^bcd] a 0 1
+[^bcd] b -1 -1
+[^bcd] d -1 -1
+[^bcd] e 0 1
+a[b]c abc 0 3
+a[ab]c abc 0 3
+a[^ab]c adc 0 3
+a[]b]c a]c 0 3
+a[[b]c a[c 0 3
+a[-b]c a-c 0 3
+a[^]b]c adc 0 3
+a[^-b]c adc 0 3
+a[b-]c a-c 0 3
+a[b !
+a[] !
+
+; then some ranges
+[b-e] a -1 -1
+[b-e] b 0 1
+[b-e] e 0 1
+[b-e] f -1 -1
+[^b-e] a 0 1
+[^b-e] b -1 -1
+[^b-e] e -1 -1
+[^b-e] f 0 1
+a[1-3]c a2c 0 3
+a[3-1]c !
+a[1-3-5]c !
+a[1- !
+
+; and some classes
+a[[:alpha:]]c abc 0 3
+a[[:unknown:]]c !
+a[[: !
+a[[:alpha !
+a[[:alpha:] !
+a[[:alpha,:] !
+a[[:]:]]b !
+a[[:-:]]b !
+a[[:alph:]] !
+a[[:alphabet:]] !
+[[:alnum:]]+ -%@a0X_- 3 6
+[[:alpha:]]+ -%@aX_0- 3 5
+[[:blank:]]+ "a  \tb" 1 4
+[[:cntrl:]]+ a\n\tb 1 3
+[[:digit:]]+ a019b 1 4
+[[:graph:]]+ " a%b " 1 4
+[[:lower:]]+ AabC 1 3
+; This test fails with STLPort, disable for now as this is a corner case anyway...
+;[[:print:]]+ "\na b\n" 1 4
+[[:punct:]]+ " %-&\t" 1 4
+[[:space:]]+ "a \n\t\rb" 1 5
+[[:upper:]]+ aBCd 1 3
+[[:xdigit:]]+ p0f3Cx 1 5
+
+; now test flag settings:
+- escape_in_lists REG_NO_POSIX_TEST
+[\n] \n 0 1
+- REG_NO_POSIX_TEST
+
+; line anchors
+- match_default normal REG_EXTENDED
+^ab ab 0 2
+^ab xxabxx -1 -1
+ab$ ab 0 2
+ab$ abxx -1 -1
+- match_default match_not_bol match_not_eol normal REG_EXTENDED REG_NOTBOL REG_NOTEOL
+^ab ab -1 -1
+^ab xxabxx -1 -1
+ab$ ab -1 -1
+ab$ abxx -1 -1
+
+; back references
+- match_default normal REG_PERL
+a(b)\2c	!
+a(b\1)c	!
+a(b*)c\1d abbcbbd 0 7 1 3
+a(b*)c\1d abbcbd -1 -1
+a(b*)c\1d abbcbbbd -1 -1
+^(.)\1 abc -1 -1
+a([bc])\1d abcdabbd	4 8 5 6
+; strictly speaking this is at best ambiguous, at worst wrong, this is what most
+; re implimentations will match though.
+a(([bc])\2)*d abbccd 0 6 3 5 3 4
+
+a(([bc])\2)*d abbcbd -1 -1
+a((b)*\2)*d abbbd 0 5 1 4 2 3
+; perl only:
+(ab*)[ab]*\1 ababaaa 0 7 0 1
+(a)\1bcd aabcd 0 5 0 1
+(a)\1bc*d aabcd 0 5 0 1
+(a)\1bc*d aabd 0 4 0 1
+(a)\1bc*d aabcccd 0 7 0 1
+(a)\1bc*[ce]d aabcccd 0 7 0 1
+^(a)\1b(c)*cd$ aabcccd 0 7 0 1 4 5
+
+; posix only: 
+- match_default extended REG_EXTENDED
+(ab*)[ab]*\1 ababaaa 0 7 0 1
+
+;
+; word operators:
+\w a 0 1
+\w z 0 1
+\w A 0 1
+\w Z 0 1
+\w _ 0 1
+\w } -1 -1
+\w ` -1 -1
+\w [ -1 -1
+\w @ -1 -1
+; non-word:
+\W a -1 -1
+\W z -1 -1
+\W A -1 -1
+\W Z -1 -1
+\W _ -1 -1
+\W } 0 1
+\W ` 0 1
+\W [ 0 1
+\W @ 0 1
+; word start:
+\<abcd "  abcd" 2 6
+\<ab cab -1 -1
+\<ab "\nab" 1 3
+\<tag ::tag 2 5
+;word end:
+abc\> abc 0 3
+abc\> abcd -1 -1
+abc\> abc\n 0 3
+abc\> abc:: 0 3
+; word boundary:
+\babcd "  abcd" 2 6
+\bab cab -1 -1
+\bab "\nab" 1 3
+\btag ::tag 2 5
+abc\b abc 0 3
+abc\b abcd -1 -1
+abc\b abc\n 0 3
+abc\b abc:: 0 3
+; within word:
+\B ab 1 1
+a\Bb ab 0 2
+a\B ab 0 1
+a\B a -1 -1
+a\B "a " -1 -1
+
+;
+; buffer operators:
+\`abc abc 0 3
+\`abc \nabc -1 -1
+\`abc " abc" -1 -1
+abc\' abc 0 3
+abc\' abc\n -1 -1
+abc\' "abc " -1 -1
+
+;
+; now follows various complex expressions designed to try and bust the matcher:
+a(((b)))c abc 0 3 1 2 1 2 1 2
+a(b|(c))d abd 0 3 1 2 -1 -1
+a(b|(c))d acd 0 3 1 2 1 2
+a(b*|c)d abbd 0 4 1 3
+; just gotta have one DFA-buster, of course
+a[ab]{20} aaaaabaaaabaaaabaaaab 0 21
+; and an inline expansion in case somebody gets tricky
+a[ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab] aaaaabaaaabaaaabaaaab 0 21
+; and in case somebody just slips in an NFA...
+a[ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab](wee|week)(knights|night) aaaaabaaaabaaaabaaaabweeknights 0 31 21 24 24 31
+; one really big one
+1234567890123456789012345678901234567890123456789012345678901234567890 a1234567890123456789012345678901234567890123456789012345678901234567890b 1 71
+; fish for problems as brackets go past 8
+[ab][cd][ef][gh][ij][kl][mn] xacegikmoq 1 8
+[ab][cd][ef][gh][ij][kl][mn][op] xacegikmoq 1 9
+[ab][cd][ef][gh][ij][kl][mn][op][qr] xacegikmoqy 1 10
+[ab][cd][ef][gh][ij][kl][mn][op][q] xacegikmoqy 1 10
+; and as parenthesis go past 9:
+(a)(b)(c)(d)(e)(f)(g)(h) zabcdefghi 1 9 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9
+(a)(b)(c)(d)(e)(f)(g)(h)(i) zabcdefghij 1 10 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10
+(a)(b)(c)(d)(e)(f)(g)(h)(i)(j) zabcdefghijk 1 11 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11
+(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k) zabcdefghijkl 1 12 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12
+(a)d|(b)c abc 1 3 -1 -1 1 2
+_+((www)|(ftp)|(mailto)):_* "_wwwnocolon _mailto:" 12 20 13 19 -1 -1 -1 -1 13 19
+
+; subtleties of matching
+;a(b)?c\1d acd 0 3 -1 -1
+; POSIX is about the following test:
+a(b)?c\1d acd -1 -1 -1 -1
+a(b?c)+d accd 0 4 2 3
+(wee|week)(knights|night) weeknights 0 10 0 3 3 10
+.* abc 0 3
+a(b|(c))d abd 0 3 1 2 -1 -1
+a(b|(c))d acd 0 3 1 2 1 2
+a(b*|c|e)d abbd 0 4 1 3
+a(b*|c|e)d acd 0 3 1 2
+a(b*|c|e)d ad 0 2 1 1
+a(b?)c abc 0 3 1 2
+a(b?)c ac 0 2 1 1
+a(b+)c abc 0 3 1 2
+a(b+)c abbbc 0 5 1 4 
+a(b*)c ac 0 2 1 1 
+(a|ab)(bc([de]+)f|cde) abcdef 0 6 0 1 1 6 3 5
+a([bc]?)c abc 0 3 1 2
+a([bc]?)c ac 0 2 1 1 
+a([bc]+)c abc 0 3 1 2
+a([bc]+)c abcc 0 4 1 3
+a([bc]+)bc abcbc 0 5 1 3
+a(bb+|b)b abb 0 3 1 2
+a(bbb+|bb+|b)b abb 0 3 1 2
+a(bbb+|bb+|b)b abbb 0 4 1 3
+a(bbb+|bb+|b)bb abbb 0 4 1 2
+(.*).* abcdef 0 6 0 6
+(a*)* bc 0 0 0 0
+xyx*xz xyxxxxyxxxz 5 11
+
+; do we get the right subexpression when it is used more than once?
+a(b|c)*d ad 0 2 -1 -1
+a(b|c)*d abcd 0 4 2 3
+a(b|c)+d abd 0 3 1 2
+a(b|c)+d abcd 0 4 2 3
+a(b|c?)+d ad 0 2 1 1
+a(b|c){0,0}d ad 0 2 -1 -1
+a(b|c){0,1}d ad 0 2 -1 -1
+a(b|c){0,1}d abd 0 3 1 2
+a(b|c){0,2}d ad 0 2 -1 -1
+a(b|c){0,2}d abcd 0 4 2 3
+a(b|c){0,}d ad 0 2 -1 -1
+a(b|c){0,}d abcd 0 4 2 3
+a(b|c){1,1}d abd 0 3 1 2
+a(b|c){1,2}d abd 0 3 1 2
+a(b|c){1,2}d abcd 0 4 2 3
+a(b|c){1,}d abd 0 3 1 2
+a(b|c){1,}d abcd 0 4 2 3
+a(b|c){2,2}d acbd 0 4 2 3
+a(b|c){2,2}d abcd 0 4 2 3
+a(b|c){2,4}d abcd 0 4 2 3
+a(b|c){2,4}d abcbd 0 5 3 4
+a(b|c){2,4}d abcbcd 0 6 4 5
+a(b|c){2,}d abcd 0 4 2 3
+a(b|c){2,}d abcbd 0 5 3 4
+; perl only: these conflict with the POSIX test below
+;a(b|c?)+d abcd 0 4 3 3
+;a(b+|((c)*))+d abd 0 3 2 2 2 2 -1 -1
+;a(b+|((c)*))+d abcd 0 4 3 3 3 3 2 3
+
+; posix only:
+- match_default extended REG_EXTENDED REG_STARTEND
+
+a(b|c?)+d abcd 0 4 2 3
+a(b|((c)*))+d abcd 0 4 2 3 2 3 2 3
+a(b+|((c)*))+d abd 0 3 1 2 -1 -1 -1 -1
+a(b+|((c)*))+d abcd 0 4 2 3 2 3 2 3
+a(b|((c)*))+d ad 0 2 1 1 1 1 -1 -1
+a(b|((c)*))*d abcd 0 4 2 3 2 3 2 3
+a(b+|((c)*))*d abd 0 3 1 2 -1 -1 -1 -1
+a(b+|((c)*))*d abcd 0 4 2 3 2 3 2 3
+a(b|((c)*))*d ad 0 2 1 1 1 1 -1 -1
+
+- match_default normal REG_PERL
+; try to match C++ syntax elements:
+; line comment:
+//[^\n]* "++i //here is a line comment\n" 4 28
+; block comment:
+/\*([^*]|\*+[^*/])*\*+/ "/* here is a block comment */" 0 29 26 27
+/\*([^*]|\*+[^*/])*\*+/ "/**/" 0 4 -1 -1
+/\*([^*]|\*+[^*/])*\*+/ "/***/" 0 5 -1 -1
+/\*([^*]|\*+[^*/])*\*+/ "/****/" 0 6 -1 -1
+/\*([^*]|\*+[^*/])*\*+/ "/*****/" 0 7 -1 -1
+/\*([^*]|\*+[^*/])*\*+/ "/*****/*/" 0 7 -1 -1
+; preprossor directives:
+^[[:blank:]]*#([^\n]*\\[[:space:]]+)*[^\n]* "#define some_symbol" 0 19 -1 -1
+^[[:blank:]]*#([^\n]*\\[[:space:]]+)*[^\n]* "#define some_symbol(x) #x" 0 25 -1 -1
+; perl only:
+^[[:blank:]]*#([^\n]*\\[[:space:]]+)*[^\n]* "#define some_symbol(x) \\  \r\n  foo();\\\r\n   printf(#x);" 0 53 30 42
+; literals:
+((0x[[:xdigit:]]+)|([[:digit:]]+))u?((int(8|16|32|64))|L)? 0xFF         						0 4		0 4		0 4 	-1 -1 	-1 -1 	-1 -1 	-1 -1
+((0x[[:xdigit:]]+)|([[:digit:]]+))u?((int(8|16|32|64))|L)? 35 									0 2 	0 2		-1 -1 	0 2 	-1 -1 	-1 -1 	-1 -1
+((0x[[:xdigit:]]+)|([[:digit:]]+))u?((int(8|16|32|64))|L)? 0xFFu 								0 5		0 4		0 4 	-1 -1 	-1 -1 	-1 -1 	-1 -1
+((0x[[:xdigit:]]+)|([[:digit:]]+))u?((int(8|16|32|64))|L)? 0xFFL 								0 5		0 4		0 4 	-1 -1 	4 5 	-1 -1 	-1 -1
+((0x[[:xdigit:]]+)|([[:digit:]]+))u?((int(8|16|32|64))|L)? 0xFFFFFFFFFFFFFFFFuint64 			0 24	0 18	0 18 	-1 -1 	19 24 	19 24 	22 24
+; strings:
+'([^\\']|\\.)*' '\\x3A' 0 6 4 5
+'([^\\']|\\.)*' '\\'' 0 4 1 3
+'([^\\']|\\.)*' '\\n' 0 4 1 3
+
+; finally try some case insensitive matches:
+- match_default normal REG_EXTENDED REG_ICASE
+; upper and lower have no meaning here so they fail, however these
+; may compile with other libraries...
+;[[:lower:]] !
+;[[:upper:]] !
+0123456789@abcdefghijklmnopqrstuvwxyz\[\\\]\^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ\{\|\} 0123456789@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]\^_`abcdefghijklmnopqrstuvwxyz\{\|\} 0 72
+
+; known and suspected bugs:
+- match_default normal REG_EXTENDED
+\( ( 0 1
+\) ) 0 1
+\$ $ 0 1
+\^ ^ 0 1
+\. . 0 1
+\* * 0 1
+\+ + 0 1
+\? ? 0 1
+\[ [ 0 1
+\] ] 0 1
+\| | 0 1
+\\ \\ 0 1
+# # 0 1
+\# # 0 1
+a- a- 0 2
+\- - 0 1
+\{ { 0 1
+\} } 0 1
+0 0 0 1
+1 1 0 1
+9 9 0 1
+b b 0 1
+B B 0 1
+< < 0 1
+> > 0 1
+w w 0 1
+W W 0 1
+` ` 0 1
+' ' 0 1
+\n \n 0 1
+, , 0 1
+a a 0 1
+f f 0 1
+n n 0 1
+r r 0 1
+t t 0 1
+v v 0 1
+c c 0 1
+x x 0 1
+: : 0 1
+(\.[[:alnum:]]+){2} "w.a.b " 1 5 3 5
+
+- match_default normal REG_EXTENDED REG_ICASE
+a A 0 1
+A a 0 1
+[abc]+ abcABC 0 6
+[ABC]+ abcABC 0 6
+[a-z]+ abcABC 0 6
+[A-Z]+ abzANZ 0 6
+[a-Z]+ abzABZ 0 6
+[A-z]+ abzABZ 0 6
+[[:lower:]]+ abyzABYZ 0 8
+[[:upper:]]+ abzABZ 0 6
+[[:alpha:]]+ abyzABYZ 0 8
+[[:alnum:]]+ 09abyzABYZ 0 10
+
+; word start:
+\<abcd "  abcd" 2 6
+\<ab cab -1 -1
+\<ab "\nab" 1 3
+\<tag ::tag 2 5
+;word end:
+abc\> abc 0 3
+abc\> abcd -1 -1
+abc\> abc\n 0 3
+abc\> abc:: 0 3
+
+; collating elements and rewritten set code:
+- match_default normal REG_EXTENDED REG_STARTEND
+;[[.zero.]] 0 0 1
+;[[.one.]] 1 0 1
+;[[.two.]] 2 0 1
+;[[.three.]] 3 0 1
+[[.a.]] baa 1 2
+;[[.right-curly-bracket.]] } 0 1
+;[[.NUL.]] \0 0 1
+[[:<:]z] !
+[a[:>:]] !
+[[=a=]] a 0 1
+;[[=right-curly-bracket=]] } 0 1
+- match_default normal REG_EXTENDED REG_STARTEND REG_ICASE
+[[.A.]] A 0 1
+[[.A.]] a 0 1
+[[.A.]-b]+ AaBb 0 4
+[A-[.b.]]+ AaBb 0 4
+[[.a.]-B]+ AaBb 0 4
+[a-[.B.]]+ AaBb 0 4
+- match_default normal REG_EXTENDED REG_STARTEND
+[[.a.]-c]+ abcd 0 3
+[a-[.c.]]+ abcd 0 3
+[[:alpha:]-a] !
+[a-[:alpha:]] !
+
+; try mutli-character ligatures:
+;[[.ae.]] ae 0 2
+;[[.ae.]] aE -1 -1
+;[[.AE.]] AE 0 2
+;[[.Ae.]] Ae 0 2
+;[[.ae.]-b] a -1 -1
+;[[.ae.]-b] b 0 1
+;[[.ae.]-b] ae 0 2
+;[a-[.ae.]] a 0 1
+;[a-[.ae.]] b -1 -1
+;[a-[.ae.]] ae 0 2
+- match_default normal REG_EXTENDED REG_STARTEND REG_ICASE
+;[[.ae.]] AE 0 2
+;[[.ae.]] Ae 0 2
+;[[.AE.]] Ae 0 2
+;[[.Ae.]] aE 0 2
+;[[.AE.]-B] a -1 -1
+;[[.Ae.]-b] b 0 1
+;[[.Ae.]-b] B 0 1
+;[[.ae.]-b] AE 0 2
+
+- match_default normal REG_EXTENDED REG_STARTEND REG_NO_POSIX_TEST
+\s+ "ab   ab" 2 5
+\S+ "  abc  " 2 5
+
+- match_default normal REG_EXTENDED REG_STARTEND
+\`abc abc 0 3
+\`abc aabc -1 -1
+abc\' abc 0 3
+abc\' abcd -1 -1
+abc\' abc\n\n -1 -1
+abc\' abc 0 3
+
+; extended repeat checking to exercise new algorithms:
+ab.*xy abxy_ 0 4
+ab.*xy ab_xy_ 0 5
+ab.*xy abxy 0 4
+ab.*xy ab_xy 0 5
+ab.* ab 0 2
+ab.* ab__ 0 4
+
+ab.{2,5}xy ab__xy_ 0 6
+ab.{2,5}xy ab____xy_ 0 8
+ab.{2,5}xy ab_____xy_ 0 9
+ab.{2,5}xy ab__xy 0 6
+ab.{2,5}xy ab_____xy 0 9
+ab.{2,5} ab__ 0 4
+ab.{2,5} ab_______ 0 7
+ab.{2,5}xy ab______xy -1 -1
+ab.{2,5}xy ab_xy -1 -1
+
+ab.*?xy abxy_ 0 4
+ab.*?xy ab_xy_ 0 5
+ab.*?xy abxy 0 4
+ab.*?xy ab_xy 0 5
+ab.*? ab 0 2
+ab.*? ab__ 0 4
+
+ab.{2,5}?xy ab__xy_ 0 6
+ab.{2,5}?xy ab____xy_ 0 8
+ab.{2,5}?xy ab_____xy_ 0 9
+ab.{2,5}?xy ab__xy 0 6
+ab.{2,5}?xy ab_____xy 0 9
+ab.{2,5}? ab__ 0 4
+ab.{2,5}? ab_______ 0 7
+ab.{2,5}?xy ab______xy -1 -1
+ab.{2,5}xy ab_xy -1 -1
+
+; again but with slower algorithm variant:
+- match_default REG_EXTENDED
+; now again for single character repeats:
+
+ab_*xy abxy_ 0 4
+ab_*xy ab_xy_ 0 5
+ab_*xy abxy 0 4
+ab_*xy ab_xy 0 5
+ab_* ab 0 2
+ab_* ab__ 0 4
+
+ab_{2,5}xy ab__xy_ 0 6
+ab_{2,5}xy ab____xy_ 0 8
+ab_{2,5}xy ab_____xy_ 0 9
+ab_{2,5}xy ab__xy 0 6
+ab_{2,5}xy ab_____xy 0 9
+ab_{2,5} ab__ 0 4
+ab_{2,5} ab_______ 0 7
+ab_{2,5}xy ab______xy -1 -1
+ab_{2,5}xy ab_xy -1 -1
+
+ab_*?xy abxy_ 0 4
+ab_*?xy ab_xy_ 0 5
+ab_*?xy abxy 0 4
+ab_*?xy ab_xy 0 5
+ab_*? ab 0 2
+ab_*? ab__ 0 4
+
+ab_{2,5}?xy ab__xy_ 0 6
+ab_{2,5}?xy ab____xy_ 0 8
+ab_{2,5}?xy ab_____xy_ 0 9
+ab_{2,5}?xy ab__xy 0 6
+ab_{2,5}?xy ab_____xy 0 9
+ab_{2,5}? ab__ 0 4
+ab_{2,5}? ab_______ 0 7
+ab_{2,5}?xy ab______xy -1 -1
+ab_{2,5}xy ab_xy -1 -1
+
+; and again for sets:
+ab[_,;]*xy abxy_ 0 4
+ab[_,;]*xy ab_xy_ 0 5
+ab[_,;]*xy abxy 0 4
+ab[_,;]*xy ab_xy 0 5
+ab[_,;]* ab 0 2
+ab[_,;]* ab__ 0 4
+
+ab[_,;]{2,5}xy ab__xy_ 0 6
+ab[_,;]{2,5}xy ab____xy_ 0 8
+ab[_,;]{2,5}xy ab_____xy_ 0 9
+ab[_,;]{2,5}xy ab__xy 0 6
+ab[_,;]{2,5}xy ab_____xy 0 9
+ab[_,;]{2,5} ab__ 0 4
+ab[_,;]{2,5} ab_______ 0 7
+ab[_,;]{2,5}xy ab______xy -1 -1
+ab[_,;]{2,5}xy ab_xy -1 -1
+
+ab[_,;]*?xy abxy_ 0 4
+ab[_,;]*?xy ab_xy_ 0 5
+ab[_,;]*?xy abxy 0 4
+ab[_,;]*?xy ab_xy 0 5
+ab[_,;]*? ab 0 2
+ab[_,;]*? ab__ 0 4
+
+ab[_,;]{2,5}?xy ab__xy_ 0 6
+ab[_,;]{2,5}?xy ab____xy_ 0 8
+ab[_,;]{2,5}?xy ab_____xy_ 0 9
+ab[_,;]{2,5}?xy ab__xy 0 6
+ab[_,;]{2,5}?xy ab_____xy 0 9
+ab[_,;]{2,5}? ab__ 0 4
+ab[_,;]{2,5}? ab_______ 0 7
+ab[_,;]{2,5}?xy ab______xy -1 -1
+ab[_,;]{2,5}xy ab_xy -1 -1
+
+; and again for tricky sets with digraphs:
+;ab[_[.ae.]]*xy abxy_ 0 4
+;ab[_[.ae.]]*xy ab_xy_ 0 5
+;ab[_[.ae.]]*xy abxy 0 4
+;ab[_[.ae.]]*xy ab_xy 0 5
+;ab[_[.ae.]]* ab 0 2
+;ab[_[.ae.]]* ab__ 0 4
+
+;ab[_[.ae.]]{2,5}xy ab__xy_ 0 6
+;ab[_[.ae.]]{2,5}xy ab____xy_ 0 8
+;ab[_[.ae.]]{2,5}xy ab_____xy_ 0 9
+;ab[_[.ae.]]{2,5}xy ab__xy 0 6
+;ab[_[.ae.]]{2,5}xy ab_____xy 0 9
+;ab[_[.ae.]]{2,5} ab__ 0 4
+;ab[_[.ae.]]{2,5} ab_______ 0 7
+;ab[_[.ae.]]{2,5}xy ab______xy -1 -1
+;ab[_[.ae.]]{2,5}xy ab_xy -1 -1
+
+;ab[_[.ae.]]*?xy abxy_ 0 4
+;ab[_[.ae.]]*?xy ab_xy_ 0 5
+;ab[_[.ae.]]*?xy abxy 0 4
+;ab[_[.ae.]]*?xy ab_xy 0 5
+;ab[_[.ae.]]*? ab 0 2
+;ab[_[.ae.]]*? ab__ 0 2
+
+;ab[_[.ae.]]{2,5}?xy ab__xy_ 0 6
+;ab[_[.ae.]]{2,5}?xy ab____xy_ 0 8
+;ab[_[.ae.]]{2,5}?xy ab_____xy_ 0 9
+;ab[_[.ae.]]{2,5}?xy ab__xy 0 6
+;ab[_[.ae.]]{2,5}?xy ab_____xy 0 9
+;ab[_[.ae.]]{2,5}? ab__ 0 4
+;ab[_[.ae.]]{2,5}? ab_______ 0 4
+;ab[_[.ae.]]{2,5}?xy ab______xy -1 -1
+;ab[_[.ae.]]{2,5}xy ab_xy -1 -1
+
+; new bugs detected in spring 2003:
+- normal match_continuous REG_NO_POSIX_TEST
+b abc 1 2
+
+() abc 0 0 0 0
+^() abc 0 0 0 0
+^()+ abc 0 0 0 0
+^(){1} abc 0 0 0 0
+^(){2} abc 0 0 0 0
+^((){2}) abc 0 0 0 0 0 0
+() "" 0 0 0 0
+()\1 "" 0 0 0 0
+()\1 a 0 0 0 0
+a()\1b ab 0 2 1 1
+a()b\1 ab 0 2 1 1
+
+; subtleties of matching with no sub-expressions marked
+- normal match_nosubs REG_NO_POSIX_TEST
+a(b?c)+d accd 0 4 
+(wee|week)(knights|night) weeknights 0 10 
+.* abc 0 3
+a(b|(c))d abd 0 3 
+a(b|(c))d acd 0 3
+a(b*|c|e)d abbd 0 4
+a(b*|c|e)d acd 0 3 
+a(b*|c|e)d ad 0 2
+a(b?)c abc 0 3
+a(b?)c ac 0 2
+a(b+)c abc 0 3
+a(b+)c abbbc 0 5
+a(b*)c ac 0 2
+(a|ab)(bc([de]+)f|cde) abcdef 0 6
+a([bc]?)c abc 0 3
+a([bc]?)c ac 0 2
+a([bc]+)c abc 0 3
+a([bc]+)c abcc 0 4
+a([bc]+)bc abcbc 0 5
+a(bb+|b)b abb 0 3
+a(bbb+|bb+|b)b abb 0 3
+a(bbb+|bb+|b)b abbb 0 4
+a(bbb+|bb+|b)bb abbb 0 4
+(.*).* abcdef 0 6
+(a*)* bc 0 0
+
+- normal nosubs REG_NO_POSIX_TEST
+a(b?c)+d accd 0 4 
+(wee|week)(knights|night) weeknights 0 10 
+.* abc 0 3
+a(b|(c))d abd 0 3 
+a(b|(c))d acd 0 3
+a(b*|c|e)d abbd 0 4
+a(b*|c|e)d acd 0 3 
+a(b*|c|e)d ad 0 2
+a(b?)c abc 0 3
+a(b?)c ac 0 2
+a(b+)c abc 0 3
+a(b+)c abbbc 0 5
+a(b*)c ac 0 2
+(a|ab)(bc([de]+)f|cde) abcdef 0 6
+a([bc]?)c abc 0 3
+a([bc]?)c ac 0 2
+a([bc]+)c abc 0 3
+a([bc]+)c abcc 0 4
+a([bc]+)bc abcbc 0 5
+a(bb+|b)b abb 0 3
+a(bbb+|bb+|b)b abb 0 3
+a(bbb+|bb+|b)b abbb 0 4
+a(bbb+|bb+|b)bb abbb 0 4
+(.*).* abcdef 0 6
+(a*)* bc 0 0
+
diff --git a/src/sed/testsuite/Makefile.am b/src/sed/testsuite/Makefile.am
new file mode 100644
index 0000000..cdf761c
--- /dev/null
+++ b/src/sed/testsuite/Makefile.am
@@ -0,0 +1,94 @@
+CLEANFILES = tmp* core *.core $(EXTRA_PROGRAMS) *.*out *.log
+
+TESTS = $(check_PROGRAMS) $(SEDTESTS)
+SEDTESTS =
+
+LDADD = ../lib/libsed.a
+noinst_HEADERS = testcases.h ptestcases.h
+AM_CPPFLAGS = -I../lib
+
+if TEST_REGEX
+check_PROGRAMS = bug-regex7 \
+                 bug-regex8 bug-regex9 bug-regex10 bug-regex11 bug-regex12 \
+                 bug-regex13 bug-regex14 bug-regex15 bug-regex16 bug-regex21 \
+                 tst-pcre tst-boost runtests runptests tst-rxspencer tst-regex2
+
+SEDTESTS += space
+endif
+
+SEDTESTS += \
+        appquit enable sep inclib 8bit newjis xabcx dollar noeol noeolw \
+  	modulo numsub numsub2 numsub3 numsub4 numsub5 0range bkslashes \
+  	head madding mac-mf empty xbxcx xbxcx3 recall recall2 xemacs \
+  	fasts uniq manis khadafy linecnt eval distrib 8to7 y-bracket \
+	y-newline allsub cv-vars classes middle bsd stdin flipcase \
+	insens subwrite writeout readin \
+	help version file quiet \
+	factor binary3 binary2 binary dc
+
+TESTS_ENVIRONMENT = MAKE="$(MAKE)" VERSION="$(VERSION)" $(srcdir)/runtest
+
+EXTRA_DIST = \
+	PCRE.tests BOOST.tests SPENCER.tests \
+	runtest Makefile.tests \
+	0range.good 0range.inp 0range.sed \
+	8bit.good 8bit.inp 8bit.sed \
+	8to7.good 8to7.inp 8to7.sed \
+	allsub.good allsub.inp allsub.sed \
+	appquit.good appquit.inp appquit.sed \
+	binary.good binary.inp binary.sed binary2.sed binary3.sed \
+	bkslashes.good bkslashes.inp bkslashes.sed \
+	bsd.good bsd.sh \
+	cv-vars.good cv-vars.inp cv-vars.sed \
+	classes.good classes.inp classes.sed \
+	dc.good dc.inp dc.sed \
+	distrib.good distrib.inp distrib.sed distrib.sh \
+	dollar.good dollar.inp dollar.sed \
+	empty.good empty.inp empty.sed \
+	enable.good enable.inp enable.sed \
+	eval.good eval.inp eval.sed \
+	factor.good factor.inp factor.sed \
+	fasts.good fasts.inp fasts.sed \
+	flipcase.good flipcase.inp flipcase.sed \
+	head.good head.inp head.sed \
+	inclib.good inclib.inp inclib.sed \
+	insens.good insens.inp insens.sed \
+	khadafy.good khadafy.inp khadafy.sed \
+	linecnt.good linecnt.inp linecnt.sed \
+	space.good space.inp space.sed \
+	mac-mf.good mac-mf.inp mac-mf.sed \
+	madding.good madding.inp madding.sed \
+	manis.good manis.inp manis.sed \
+	middle.good middle.sed middle.inp \
+	modulo.good modulo.sed modulo.inp \
+	newjis.good newjis.inp  newjis.sed \
+	noeol.good noeol.inp noeol.sed \
+	noeolw.good noeolw.1good noeolw.2good noeolw.sed \
+	numsub.good numsub.inp numsub.sed \
+	numsub2.good numsub2.inp numsub2.sed \
+	numsub3.good numsub3.inp numsub3.sed \
+	numsub4.good numsub4.inp numsub4.sed \
+	numsub5.good numsub5.inp numsub5.sed \
+	readin.good readin.in2 readin.inp readin.sed \
+	recall.good recall.inp recall.sed \
+	recall2.good recall2.inp recall2.sed \
+	sep.good sep.inp sep.sed \
+	subwrite.inp subwrite.sed  subwrt1.good subwrt2.good \
+	uniq.good uniq.inp uniq.sed \
+	version.gin \
+	writeout.inp writeout.sed wrtout1.good wrtout2.good \
+	xabcx.good xabcx.inp xabcx.sed \
+	xbxcx.good xbxcx.inp xbxcx.sed \
+	xbxcx3.good xbxcx3.inp xbxcx3.sed \
+	xemacs.good xemacs.inp xemacs.sed \
+	y-bracket.good y-bracket.sed y-bracket.inp \
+	y-newline.good y-newline.sed y-newline.inp
+
+clean-local:
+	test x$(srcdir) = x. || rm -f readin.in2 eval.in2
+
+# automake makes `check' depend on $(TESTS).  Declare
+# dummy targets for $(TESTS) so that make does not complain.
+
+.PHONY: $(SEDTESTS)
+$(SEDTESTS):
diff --git a/src/sed/testsuite/Makefile.in b/src/sed/testsuite/Makefile.in
new file mode 100644
index 0000000..a485b87
--- /dev/null
+++ b/src/sed/testsuite/Makefile.in
@@ -0,0 +1,720 @@
+# Makefile.in generated by automake 1.9.5 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005  Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+SOURCES = bug-regex10.c bug-regex11.c bug-regex12.c bug-regex13.c bug-regex14.c bug-regex15.c bug-regex16.c bug-regex21.c bug-regex7.c bug-regex8.c bug-regex9.c runptests.c runtests.c tst-boost.c tst-pcre.c tst-regex2.c tst-rxspencer.c
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+top_builddir = ..
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+INSTALL = @INSTALL@
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+@TEST_REGEX_TRUE@check_PROGRAMS = bug-regex7$(EXEEXT) \
+@TEST_REGEX_TRUE@	bug-regex8$(EXEEXT) bug-regex9$(EXEEXT) \
+@TEST_REGEX_TRUE@	bug-regex10$(EXEEXT) bug-regex11$(EXEEXT) \
+@TEST_REGEX_TRUE@	bug-regex12$(EXEEXT) bug-regex13$(EXEEXT) \
+@TEST_REGEX_TRUE@	bug-regex14$(EXEEXT) bug-regex15$(EXEEXT) \
+@TEST_REGEX_TRUE@	bug-regex16$(EXEEXT) bug-regex21$(EXEEXT) \
+@TEST_REGEX_TRUE@	tst-pcre$(EXEEXT) tst-boost$(EXEEXT) \
+@TEST_REGEX_TRUE@	runtests$(EXEEXT) runptests$(EXEEXT) \
+@TEST_REGEX_TRUE@	tst-rxspencer$(EXEEXT) tst-regex2$(EXEEXT)
+@TEST_REGEX_TRUE@am__append_1 = space
+subdir = testsuite
+DIST_COMMON = $(noinst_HEADERS) $(srcdir)/Makefile.am \
+	$(srcdir)/Makefile.in
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/config/codeset.m4 \
+	$(top_srcdir)/config/getline.m4 \
+	$(top_srcdir)/config/gettext-ver.m4 \
+	$(top_srcdir)/config/gettext.m4 \
+	$(top_srcdir)/config/glibc21.m4 $(top_srcdir)/config/iconv.m4 \
+	$(top_srcdir)/config/lcmessage.m4 \
+	$(top_srcdir)/config/lib-ld.m4 \
+	$(top_srcdir)/config/lib-link.m4 \
+	$(top_srcdir)/config/lib-prefix.m4 \
+	$(top_srcdir)/config/progtest.m4 \
+	$(top_srcdir)/config/stdbool.m4 \
+	$(top_srcdir)/config/strverscmp.m4 $(top_srcdir)/configure.ac
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+	$(ACLOCAL_M4)
+mkinstalldirs = $(install_sh) -d
+CONFIG_HEADER = $(top_builddir)/config.h
+CONFIG_CLEAN_FILES =
+bug_regex10_SOURCES = bug-regex10.c
+bug_regex10_OBJECTS = bug-regex10.$(OBJEXT)
+bug_regex10_LDADD = $(LDADD)
+bug_regex10_DEPENDENCIES = ../lib/libsed.a
+bug_regex11_SOURCES = bug-regex11.c
+bug_regex11_OBJECTS = bug-regex11.$(OBJEXT)
+bug_regex11_LDADD = $(LDADD)
+bug_regex11_DEPENDENCIES = ../lib/libsed.a
+bug_regex12_SOURCES = bug-regex12.c
+bug_regex12_OBJECTS = bug-regex12.$(OBJEXT)
+bug_regex12_LDADD = $(LDADD)
+bug_regex12_DEPENDENCIES = ../lib/libsed.a
+bug_regex13_SOURCES = bug-regex13.c
+bug_regex13_OBJECTS = bug-regex13.$(OBJEXT)
+bug_regex13_LDADD = $(LDADD)
+bug_regex13_DEPENDENCIES = ../lib/libsed.a
+bug_regex14_SOURCES = bug-regex14.c
+bug_regex14_OBJECTS = bug-regex14.$(OBJEXT)
+bug_regex14_LDADD = $(LDADD)
+bug_regex14_DEPENDENCIES = ../lib/libsed.a
+bug_regex15_SOURCES = bug-regex15.c
+bug_regex15_OBJECTS = bug-regex15.$(OBJEXT)
+bug_regex15_LDADD = $(LDADD)
+bug_regex15_DEPENDENCIES = ../lib/libsed.a
+bug_regex16_SOURCES = bug-regex16.c
+bug_regex16_OBJECTS = bug-regex16.$(OBJEXT)
+bug_regex16_LDADD = $(LDADD)
+bug_regex16_DEPENDENCIES = ../lib/libsed.a
+bug_regex21_SOURCES = bug-regex21.c
+bug_regex21_OBJECTS = bug-regex21.$(OBJEXT)
+bug_regex21_LDADD = $(LDADD)
+bug_regex21_DEPENDENCIES = ../lib/libsed.a
+bug_regex7_SOURCES = bug-regex7.c
+bug_regex7_OBJECTS = bug-regex7.$(OBJEXT)
+bug_regex7_LDADD = $(LDADD)
+bug_regex7_DEPENDENCIES = ../lib/libsed.a
+bug_regex8_SOURCES = bug-regex8.c
+bug_regex8_OBJECTS = bug-regex8.$(OBJEXT)
+bug_regex8_LDADD = $(LDADD)
+bug_regex8_DEPENDENCIES = ../lib/libsed.a
+bug_regex9_SOURCES = bug-regex9.c
+bug_regex9_OBJECTS = bug-regex9.$(OBJEXT)
+bug_regex9_LDADD = $(LDADD)
+bug_regex9_DEPENDENCIES = ../lib/libsed.a
+runptests_SOURCES = runptests.c
+runptests_OBJECTS = runptests.$(OBJEXT)
+runptests_LDADD = $(LDADD)
+runptests_DEPENDENCIES = ../lib/libsed.a
+runtests_SOURCES = runtests.c
+runtests_OBJECTS = runtests.$(OBJEXT)
+runtests_LDADD = $(LDADD)
+runtests_DEPENDENCIES = ../lib/libsed.a
+tst_boost_SOURCES = tst-boost.c
+tst_boost_OBJECTS = tst-boost.$(OBJEXT)
+tst_boost_LDADD = $(LDADD)
+tst_boost_DEPENDENCIES = ../lib/libsed.a
+tst_pcre_SOURCES = tst-pcre.c
+tst_pcre_OBJECTS = tst-pcre.$(OBJEXT)
+tst_pcre_LDADD = $(LDADD)
+tst_pcre_DEPENDENCIES = ../lib/libsed.a
+tst_regex2_SOURCES = tst-regex2.c
+tst_regex2_OBJECTS = tst-regex2.$(OBJEXT)
+tst_regex2_LDADD = $(LDADD)
+tst_regex2_DEPENDENCIES = ../lib/libsed.a
+tst_rxspencer_SOURCES = tst-rxspencer.c
+tst_rxspencer_OBJECTS = tst-rxspencer.$(OBJEXT)
+tst_rxspencer_LDADD = $(LDADD)
+tst_rxspencer_DEPENDENCIES = ../lib/libsed.a
+DEFAULT_INCLUDES = -I. -I$(srcdir) -I$(top_builddir)
+depcomp = $(SHELL) $(top_srcdir)/config/depcomp
+am__depfiles_maybe = depfiles
+COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+CCLD = $(CC)
+LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+SOURCES = bug-regex10.c bug-regex11.c bug-regex12.c bug-regex13.c \
+	bug-regex14.c bug-regex15.c bug-regex16.c bug-regex21.c \
+	bug-regex7.c bug-regex8.c bug-regex9.c runptests.c runtests.c \
+	tst-boost.c tst-pcre.c tst-regex2.c tst-rxspencer.c
+DIST_SOURCES = bug-regex10.c bug-regex11.c bug-regex12.c bug-regex13.c \
+	bug-regex14.c bug-regex15.c bug-regex16.c bug-regex21.c \
+	bug-regex7.c bug-regex8.c bug-regex9.c runptests.c runtests.c \
+	tst-boost.c tst-pcre.c tst-regex2.c tst-rxspencer.c
+HEADERS = $(noinst_HEADERS)
+ETAGS = etags
+CTAGS = ctags
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
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+ALLOCA = @ALLOCA@
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+AMDEP_TRUE = @AMDEP_TRUE@
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+AUTOHEADER = @AUTOHEADER@
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+AWK = @AWK@
+BUILD_HTML_FALSE = @BUILD_HTML_FALSE@
+BUILD_HTML_TRUE = @BUILD_HTML_TRUE@
+BUILD_INCLUDED_LIBINTL = @BUILD_INCLUDED_LIBINTL@
+CATOBJEXT = @CATOBJEXT@
+CC = @CC@
+CCDEPMODE = @CCDEPMODE@
+CFLAGS = @CFLAGS@
+CPP = @CPP@
+CPPFLAGS = @CPPFLAGS@
+CYGPATH_W = @CYGPATH_W@
+DATADIRNAME = @DATADIRNAME@
+DEFS = @DEFS@
+DEPDIR = @DEPDIR@
+ECHO_C = @ECHO_C@
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+GENCAT = @GENCAT@
+GLIBC21 = @GLIBC21@
+GMSGFMT = @GMSGFMT@
+HAVE__BOOL = @HAVE__BOOL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INSTOBJEXT = @INSTOBJEXT@
+INTLBISON = @INTLBISON@
+INTLLIBS = @INTLLIBS@
+INTLOBJS = @INTLOBJS@
+INTL_LIBTOOL_SUFFIX_PREFIX = @INTL_LIBTOOL_SUFFIX_PREFIX@
+LDFLAGS = @LDFLAGS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBOBJS = @LIBOBJS@
+LIBS = @LIBS@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBOBJS = @LTLIBOBJS@
+MAKEINFO = @MAKEINFO@
+MAKEINFO_HTML_FALSE = @MAKEINFO_HTML_FALSE@
+MAKEINFO_HTML_TRUE = @MAKEINFO_HTML_TRUE@
+MKINSTALLDIRS = @MKINSTALLDIRS@
+MSGFMT = @MSGFMT@
+MSGMERGE = @MSGMERGE@
+OBJEXT = @OBJEXT@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
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+PACKAGE_TARNAME = @PACKAGE_TARNAME@
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+PATH_SEPARATOR = @PATH_SEPARATOR@
+POSUB = @POSUB@
+RANLIB = @RANLIB@
+SED_FEATURE_VERSION = @SED_FEATURE_VERSION@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+STRIP = @STRIP@
+TEST_REGEX_FALSE = @TEST_REGEX_FALSE@
+TEST_REGEX_TRUE = @TEST_REGEX_TRUE@
+TEXI2HTML = @TEXI2HTML@
+TEXI2HTML_HTML_FALSE = @TEXI2HTML_HTML_FALSE@
+TEXI2HTML_HTML_TRUE = @TEXI2HTML_HTML_TRUE@
+USE_INCLUDED_LIBINTL = @USE_INCLUDED_LIBINTL@
+USE_NLS = @USE_NLS@
+VERSION = @VERSION@
+XGETTEXT = @XGETTEXT@
+ac_ct_CC = @ac_ct_CC@
+ac_ct_RANLIB = @ac_ct_RANLIB@
+ac_ct_STRIP = @ac_ct_STRIP@
+am__fastdepCC_FALSE = @am__fastdepCC_FALSE@
+am__fastdepCC_TRUE = @am__fastdepCC_TRUE@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+datadir = @datadir@
+exec_prefix = @exec_prefix@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libdir = @libdir@
+libexecdir = @libexecdir@
+localstatedir = @localstatedir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+oldincludedir = @oldincludedir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+CLEANFILES = tmp* core *.core $(EXTRA_PROGRAMS) *.*out *.log
+TESTS = $(check_PROGRAMS) $(SEDTESTS)
+SEDTESTS = $(am__append_1) appquit enable sep inclib 8bit newjis xabcx \
+	dollar noeol noeolw modulo numsub numsub2 numsub3 numsub4 \
+	numsub5 0range bkslashes head madding mac-mf empty xbxcx \
+	xbxcx3 recall recall2 xemacs fasts uniq manis khadafy linecnt \
+	eval distrib 8to7 y-bracket y-newline allsub cv-vars classes \
+	middle bsd stdin flipcase insens subwrite writeout readin help \
+	version file quiet factor binary3 binary2 binary dc
+LDADD = ../lib/libsed.a
+noinst_HEADERS = testcases.h ptestcases.h
+AM_CPPFLAGS = -I../lib
+TESTS_ENVIRONMENT = MAKE="$(MAKE)" VERSION="$(VERSION)" $(srcdir)/runtest
+EXTRA_DIST = \
+	PCRE.tests BOOST.tests SPENCER.tests \
+	runtest Makefile.tests \
+	0range.good 0range.inp 0range.sed \
+	8bit.good 8bit.inp 8bit.sed \
+	8to7.good 8to7.inp 8to7.sed \
+	allsub.good allsub.inp allsub.sed \
+	appquit.good appquit.inp appquit.sed \
+	binary.good binary.inp binary.sed binary2.sed binary3.sed \
+	bkslashes.good bkslashes.inp bkslashes.sed \
+	bsd.good bsd.sh \
+	cv-vars.good cv-vars.inp cv-vars.sed \
+	classes.good classes.inp classes.sed \
+	dc.good dc.inp dc.sed \
+	distrib.good distrib.inp distrib.sed distrib.sh \
+	dollar.good dollar.inp dollar.sed \
+	empty.good empty.inp empty.sed \
+	enable.good enable.inp enable.sed \
+	eval.good eval.inp eval.sed \
+	factor.good factor.inp factor.sed \
+	fasts.good fasts.inp fasts.sed \
+	flipcase.good flipcase.inp flipcase.sed \
+	head.good head.inp head.sed \
+	inclib.good inclib.inp inclib.sed \
+	insens.good insens.inp insens.sed \
+	khadafy.good khadafy.inp khadafy.sed \
+	linecnt.good linecnt.inp linecnt.sed \
+	space.good space.inp space.sed \
+	mac-mf.good mac-mf.inp mac-mf.sed \
+	madding.good madding.inp madding.sed \
+	manis.good manis.inp manis.sed \
+	middle.good middle.sed middle.inp \
+	modulo.good modulo.sed modulo.inp \
+	newjis.good newjis.inp  newjis.sed \
+	noeol.good noeol.inp noeol.sed \
+	noeolw.good noeolw.1good noeolw.2good noeolw.sed \
+	numsub.good numsub.inp numsub.sed \
+	numsub2.good numsub2.inp numsub2.sed \
+	numsub3.good numsub3.inp numsub3.sed \
+	numsub4.good numsub4.inp numsub4.sed \
+	numsub5.good numsub5.inp numsub5.sed \
+	readin.good readin.in2 readin.inp readin.sed \
+	recall.good recall.inp recall.sed \
+	recall2.good recall2.inp recall2.sed \
+	sep.good sep.inp sep.sed \
+	subwrite.inp subwrite.sed  subwrt1.good subwrt2.good \
+	uniq.good uniq.inp uniq.sed \
+	version.gin \
+	writeout.inp writeout.sed wrtout1.good wrtout2.good \
+	xabcx.good xabcx.inp xabcx.sed \
+	xbxcx.good xbxcx.inp xbxcx.sed \
+	xbxcx3.good xbxcx3.inp xbxcx3.sed \
+	xemacs.good xemacs.inp xemacs.sed \
+	y-bracket.good y-bracket.sed y-bracket.inp \
+	y-newline.good y-newline.sed y-newline.inp
+
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .o .obj
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh \
+		&& exit 0; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnits  testsuite/Makefile'; \
+	cd $(top_srcdir) && \
+	  $(AUTOMAKE) --gnits  testsuite/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+clean-checkPROGRAMS:
+	-test -z "$(check_PROGRAMS)" || rm -f $(check_PROGRAMS)
+bug-regex10$(EXEEXT): $(bug_regex10_OBJECTS) $(bug_regex10_DEPENDENCIES) 
+	@rm -f bug-regex10$(EXEEXT)
+	$(LINK) $(bug_regex10_LDFLAGS) $(bug_regex10_OBJECTS) $(bug_regex10_LDADD) $(LIBS)
+bug-regex11$(EXEEXT): $(bug_regex11_OBJECTS) $(bug_regex11_DEPENDENCIES) 
+	@rm -f bug-regex11$(EXEEXT)
+	$(LINK) $(bug_regex11_LDFLAGS) $(bug_regex11_OBJECTS) $(bug_regex11_LDADD) $(LIBS)
+bug-regex12$(EXEEXT): $(bug_regex12_OBJECTS) $(bug_regex12_DEPENDENCIES) 
+	@rm -f bug-regex12$(EXEEXT)
+	$(LINK) $(bug_regex12_LDFLAGS) $(bug_regex12_OBJECTS) $(bug_regex12_LDADD) $(LIBS)
+bug-regex13$(EXEEXT): $(bug_regex13_OBJECTS) $(bug_regex13_DEPENDENCIES) 
+	@rm -f bug-regex13$(EXEEXT)
+	$(LINK) $(bug_regex13_LDFLAGS) $(bug_regex13_OBJECTS) $(bug_regex13_LDADD) $(LIBS)
+bug-regex14$(EXEEXT): $(bug_regex14_OBJECTS) $(bug_regex14_DEPENDENCIES) 
+	@rm -f bug-regex14$(EXEEXT)
+	$(LINK) $(bug_regex14_LDFLAGS) $(bug_regex14_OBJECTS) $(bug_regex14_LDADD) $(LIBS)
+bug-regex15$(EXEEXT): $(bug_regex15_OBJECTS) $(bug_regex15_DEPENDENCIES) 
+	@rm -f bug-regex15$(EXEEXT)
+	$(LINK) $(bug_regex15_LDFLAGS) $(bug_regex15_OBJECTS) $(bug_regex15_LDADD) $(LIBS)
+bug-regex16$(EXEEXT): $(bug_regex16_OBJECTS) $(bug_regex16_DEPENDENCIES) 
+	@rm -f bug-regex16$(EXEEXT)
+	$(LINK) $(bug_regex16_LDFLAGS) $(bug_regex16_OBJECTS) $(bug_regex16_LDADD) $(LIBS)
+bug-regex21$(EXEEXT): $(bug_regex21_OBJECTS) $(bug_regex21_DEPENDENCIES) 
+	@rm -f bug-regex21$(EXEEXT)
+	$(LINK) $(bug_regex21_LDFLAGS) $(bug_regex21_OBJECTS) $(bug_regex21_LDADD) $(LIBS)
+bug-regex7$(EXEEXT): $(bug_regex7_OBJECTS) $(bug_regex7_DEPENDENCIES) 
+	@rm -f bug-regex7$(EXEEXT)
+	$(LINK) $(bug_regex7_LDFLAGS) $(bug_regex7_OBJECTS) $(bug_regex7_LDADD) $(LIBS)
+bug-regex8$(EXEEXT): $(bug_regex8_OBJECTS) $(bug_regex8_DEPENDENCIES) 
+	@rm -f bug-regex8$(EXEEXT)
+	$(LINK) $(bug_regex8_LDFLAGS) $(bug_regex8_OBJECTS) $(bug_regex8_LDADD) $(LIBS)
+bug-regex9$(EXEEXT): $(bug_regex9_OBJECTS) $(bug_regex9_DEPENDENCIES) 
+	@rm -f bug-regex9$(EXEEXT)
+	$(LINK) $(bug_regex9_LDFLAGS) $(bug_regex9_OBJECTS) $(bug_regex9_LDADD) $(LIBS)
+runptests$(EXEEXT): $(runptests_OBJECTS) $(runptests_DEPENDENCIES) 
+	@rm -f runptests$(EXEEXT)
+	$(LINK) $(runptests_LDFLAGS) $(runptests_OBJECTS) $(runptests_LDADD) $(LIBS)
+runtests$(EXEEXT): $(runtests_OBJECTS) $(runtests_DEPENDENCIES) 
+	@rm -f runtests$(EXEEXT)
+	$(LINK) $(runtests_LDFLAGS) $(runtests_OBJECTS) $(runtests_LDADD) $(LIBS)
+tst-boost$(EXEEXT): $(tst_boost_OBJECTS) $(tst_boost_DEPENDENCIES) 
+	@rm -f tst-boost$(EXEEXT)
+	$(LINK) $(tst_boost_LDFLAGS) $(tst_boost_OBJECTS) $(tst_boost_LDADD) $(LIBS)
+tst-pcre$(EXEEXT): $(tst_pcre_OBJECTS) $(tst_pcre_DEPENDENCIES) 
+	@rm -f tst-pcre$(EXEEXT)
+	$(LINK) $(tst_pcre_LDFLAGS) $(tst_pcre_OBJECTS) $(tst_pcre_LDADD) $(LIBS)
+tst-regex2$(EXEEXT): $(tst_regex2_OBJECTS) $(tst_regex2_DEPENDENCIES) 
+	@rm -f tst-regex2$(EXEEXT)
+	$(LINK) $(tst_regex2_LDFLAGS) $(tst_regex2_OBJECTS) $(tst_regex2_LDADD) $(LIBS)
+tst-rxspencer$(EXEEXT): $(tst_rxspencer_OBJECTS) $(tst_rxspencer_DEPENDENCIES) 
+	@rm -f tst-rxspencer$(EXEEXT)
+	$(LINK) $(tst_rxspencer_LDFLAGS) $(tst_rxspencer_OBJECTS) $(tst_rxspencer_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bug-regex10.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bug-regex11.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bug-regex12.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bug-regex13.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bug-regex14.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bug-regex15.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bug-regex16.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bug-regex21.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bug-regex7.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bug-regex8.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bug-regex9.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/runptests.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/runtests.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tst-boost.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tst-pcre.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tst-regex2.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tst-rxspencer.Po@am__quote@
+
+.c.o:
+@am__fastdepCC_TRUE@	if $(COMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ $<; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Po"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(COMPILE) -c $<
+
+.c.obj:
+@am__fastdepCC_TRUE@	if $(COMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ `$(CYGPATH_W) '$<'`; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Po"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(COMPILE) -c `$(CYGPATH_W) '$<'`
+uninstall-info-am:
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	mkid -fID $$unique
+tags: TAGS
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	if test -z "$(ETAGS_ARGS)$$tags$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	    $$tags $$unique; \
+	fi
+ctags: CTAGS
+CTAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	test -z "$(CTAGS_ARGS)$$tags$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$tags $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && cd $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) $$here
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+check-TESTS: $(TESTS)
+	@failed=0; all=0; xfail=0; xpass=0; skip=0; \
+	srcdir=$(srcdir); export srcdir; \
+	list='$(TESTS)'; \
+	if test -n "$$list"; then \
+	  for tst in $$list; do \
+	    if test -f ./$$tst; then dir=./; \
+	    elif test -f $$tst; then dir=; \
+	    else dir="$(srcdir)/"; fi; \
+	    if $(TESTS_ENVIRONMENT) $${dir}$$tst; then \
+	      all=`expr $$all + 1`; \
+	      case " $(XFAIL_TESTS) " in \
+	      *" $$tst "*) \
+		xpass=`expr $$xpass + 1`; \
+		failed=`expr $$failed + 1`; \
+		echo "XPASS: $$tst"; \
+	      ;; \
+	      *) \
+		echo "PASS: $$tst"; \
+	      ;; \
+	      esac; \
+	    elif test $$? -ne 77; then \
+	      all=`expr $$all + 1`; \
+	      case " $(XFAIL_TESTS) " in \
+	      *" $$tst "*) \
+		xfail=`expr $$xfail + 1`; \
+		echo "XFAIL: $$tst"; \
+	      ;; \
+	      *) \
+		failed=`expr $$failed + 1`; \
+		echo "FAIL: $$tst"; \
+	      ;; \
+	      esac; \
+	    else \
+	      skip=`expr $$skip + 1`; \
+	      echo "SKIP: $$tst"; \
+	    fi; \
+	  done; \
+	  if test "$$failed" -eq 0; then \
+	    if test "$$xfail" -eq 0; then \
+	      banner="All $$all tests passed"; \
+	    else \
+	      banner="All $$all tests behaved as expected ($$xfail expected failures)"; \
+	    fi; \
+	  else \
+	    if test "$$xpass" -eq 0; then \
+	      banner="$$failed of $$all tests failed"; \
+	    else \
+	      banner="$$failed of $$all tests did not behave as expected ($$xpass unexpected passes)"; \
+	    fi; \
+	  fi; \
+	  dashes="$$banner"; \
+	  skipped=""; \
+	  if test "$$skip" -ne 0; then \
+	    skipped="($$skip tests were not run)"; \
+	    test `echo "$$skipped" | wc -c` -le `echo "$$banner" | wc -c` || \
+	      dashes="$$skipped"; \
+	  fi; \
+	  report=""; \
+	  if test "$$failed" -ne 0 && test -n "$(PACKAGE_BUGREPORT)"; then \
+	    report="Please report to $(PACKAGE_BUGREPORT)"; \
+	    test `echo "$$report" | wc -c` -le `echo "$$banner" | wc -c` || \
+	      dashes="$$report"; \
+	  fi; \
+	  dashes=`echo "$$dashes" | sed s/./=/g`; \
+	  echo "$$dashes"; \
+	  echo "$$banner"; \
+	  test -z "$$skipped" || echo "$$skipped"; \
+	  test -z "$$report" || echo "$$report"; \
+	  echo "$$dashes"; \
+	  test "$$failed" -eq 0; \
+	else :; fi
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's|.|.|g'`; \
+	list='$(DISTFILES)'; for file in $$list; do \
+	  case $$file in \
+	    $(srcdir)/*) file=`echo "$$file" | sed "s|^$$srcdirstrip/||"`;; \
+	    $(top_srcdir)/*) file=`echo "$$file" | sed "s|^$$topsrcdirstrip/|$(top_builddir)/|"`;; \
+	  esac; \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \
+	  if test "$$dir" != "$$file" && test "$$dir" != "."; then \
+	    dir="/$$dir"; \
+	    $(mkdir_p) "$(distdir)$$dir"; \
+	  else \
+	    dir=''; \
+	  fi; \
+	  if test -d $$d/$$file; then \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
+	    fi; \
+	    cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
+	  else \
+	    test -f $(distdir)/$$file \
+	    || cp -p $$d/$$file $(distdir)/$$file \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+	$(MAKE) $(AM_MAKEFLAGS) $(check_PROGRAMS)
+	$(MAKE) $(AM_MAKEFLAGS) check-TESTS
+check: check-am
+all-am: Makefile $(HEADERS)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-checkPROGRAMS clean-generic clean-local mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-exec-am:
+
+install-info: install-info-am
+
+install-man:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-info-am
+
+.PHONY: CTAGS GTAGS all all-am check check-TESTS check-am clean \
+	clean-checkPROGRAMS clean-generic clean-local ctags distclean \
+	distclean-compile distclean-generic distclean-tags distdir dvi \
+	dvi-am html html-am info info-am install install-am \
+	install-data install-data-am install-exec install-exec-am \
+	install-info install-info-am install-man install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic pdf pdf-am ps ps-am tags uninstall \
+	uninstall-am uninstall-info-am
+
+
+clean-local:
+	test x$(srcdir) = x. || rm -f readin.in2 eval.in2
+
+# automake makes `check' depend on $(TESTS).  Declare
+# dummy targets for $(TESTS) so that make does not complain.
+
+.PHONY: $(SEDTESTS)
+$(SEDTESTS):
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/sed/testsuite/Makefile.tests b/src/sed/testsuite/Makefile.tests
new file mode 100644
index 0000000..eada28d
--- /dev/null
+++ b/src/sed/testsuite/Makefile.tests
@@ -0,0 +1,158 @@
+# Testsuite makefile for GNU sed
+
+SHELL = /bin/sh
+
+# These are only fallback values. They are usually overridden by runtest.
+srcdir = .
+SED = ../sed/sed
+SEDENV = LC_ALL=C $(TIME)
+
+#TIME=time
+CMP=cmp
+RM=rm -f
+
+enable sep inclib 8bit 8to7 newjis xabcx dollar noeol bkslashes \
+numsub head madding mac-mf empty xbxcx xbxcx3 recall recall2 xemacs \
+appquit fasts uniq manis linecnt khadafy allsub flipcase space modulo \
+y-bracket y-newline::
+	$(SEDENV) $(SED) -f $(srcdir)/$@.sed \
+		< $(srcdir)/$@.inp > $@.out 
+	$(CMP) $(srcdir)/$@.good $@.out 
+	@$(RM) $@.out 
+
+0range::
+	$(SEDENV) $(SED) -s -f $(srcdir)/$@.sed < $(srcdir)/$@.inp > $@.out 
+	$(CMP) $(srcdir)/$@.good $@.out 
+	@$(RM) $@.out 
+
+# This checks for a bug in 3.02 and 3.02.80
+stdin::
+	($(SEDENV) $(SED) d; $(SEDENV) $(SED) G) < $(srcdir)/numsub.inp > $@.1out 
+	$(SEDENV) cat $(srcdir)/numsub.inp | ($(SEDENV) $(SED) d; $(SEDENV) $(SED) G) > $@.2out 
+	$(CMP) $@.1out $@.2out 
+	@$(RM) $@.1out $@.2out 
+
+cv-vars classes middle dc distrib factor numsub2 numsub3 numsub4 numsub5 \
+insens::
+	$(SEDENV) $(SED) -n -f $(srcdir)/$@.sed < $(srcdir)/$@.inp > $@.out 
+	$(CMP) $(srcdir)/$@.good $@.out 
+	@$(RM) $@.out 
+
+noeolw::
+	$(SEDENV) $(SED) -n -f $(srcdir)/$@.sed \
+	  $(srcdir)/noeol.inp $(srcdir)/noeol.inp > $@.out 
+	$(CMP) $(srcdir)/$@.good $@.out 
+	$(CMP) $(srcdir)/$@.1good $@.1out
+	$(CMP) $(srcdir)/$@.2good $@.2out
+	@$(RM) $@.1out $@.2out $@.out
+
+subwrite::
+	$(SEDENV) $(SED) -f $(srcdir)/$@.sed < $(srcdir)/$@.inp > $@.1out 
+	$(CMP) $(srcdir)/subwrt1.good $@.1out 
+	$(CMP) $(srcdir)/subwrt2.good $@.wout
+	@$(RM) $@.1out $@.wout
+
+bsd::
+	$(SEDENV) sh $(srcdir)/$@.sh '$(SED)' bsd.out
+	$(CMP) $(srcdir)/$@.good $@.out 
+	@$(RM) $@.out 
+
+writeout::
+	$(SEDENV) $(SED) -f $(srcdir)/$@.sed < $(srcdir)/$@.inp >$@.1out 
+	$(CMP) $(srcdir)/wrtout1.good $@.1out 
+	$(CMP) $(srcdir)/wrtout2.good $@.wout
+	@$(RM) $@.1out $@.wout
+
+readin.in2: $(srcdir)/readin.in2
+	cat $(srcdir)/readin.in2 > $@
+
+readin:: readin.in2
+	$(SEDENV) $(SED) -f $(srcdir)/$@.sed < $(srcdir)/$@.inp >$@.out 
+	$(CMP) $(srcdir)/$@.good $@.out 
+	@$(RM) $@.out 
+
+eval.in2: $(srcdir)/eval.inp
+	cat $(srcdir)/eval.inp > $@
+
+eval:: eval.in2
+	$(SEDENV) $(SED) -f $(srcdir)/$@.sed < $(srcdir)/$@.inp > $@.out 
+	$(CMP) $(srcdir)/$@.good $@.out 
+	@$(RM) $@.out 
+
+binary binary2 binary3::
+	$(SEDENV) $(SED) -n -f $(srcdir)/$@.sed < $(srcdir)/binary.inp >$@.out 
+	$(CMP) $(srcdir)/binary.good $@.out 
+	@$(RM) $@.out 
+
+#
+# cmdlines targets
+#
+
+help::
+	$(SED) --help | $(SED) '1s/ [^ ]* / sed /' > $@.1out 
+	$(SED) 2>&1 | $(SED) '1s/ [^ ]* / sed /' > $@.2out || :
+	$(CMP) $@.1out $@.2out 
+	@$(RM) $@.1out $@.2out
+
+version::
+	$(SED) 's^@'VERSION'@^$(VERSION)^' $(srcdir)/version.gin > $@.good 
+	$(SEDENV) $(SED) --version > $@.out 2>&1
+	$(CMP) $@.good $@.out 
+	@$(RM) $@.good $@.out
+
+file::
+	$(SEDENV) $(SED) --file=$(srcdir)/newjis.sed \
+		< $(srcdir)/newjis.inp > $@.out 
+	$(CMP) $(srcdir)/newjis.good $@.out 
+	@$(RM) $@.out 
+
+quiet::
+	$(SEDENV) $(SED) --quiet -f $(srcdir)/cv-vars.sed \
+		< $(srcdir)/cv-vars.inp > $@.out 
+	$(CMP) $(srcdir)/cv-vars.good $@.out 
+	@$(RM) $@.out 
+
+# The following target is not used in super sed builds (only GNU sed)
+
+bug-regex7$(EXEEXT) bug-regex8$(EXEEXT) bug-regex9$(EXEEXT) \
+bug-regex10$(EXEEXT) bug-regex11$(EXEEXT) bug-regex12$(EXEEXT) \
+bug-regex13$(EXEEXT) bug-regex14$(EXEEXT) bug-regex15$(EXEEXT) bug-regex16$(EXEEXT) \
+bug-regex21$(EXEEXT) runtests$(EXEEXT) runptests$(EXEEXT)::
+	echo "$(SEDENV) ./$@ > `echo $@ | $(SED) s/$(EXEEXT)$$/.log/`"
+	@$(SEDENV) ./$@ > `echo $@ | $(SED) s/$(EXEEXT)$$/.log/`
+
+tst-pcre$(EXEEXT)::
+	$(SEDENV) ./tst-pcre $(srcdir)/PCRE.tests > tst-pcre.log
+
+tst-boost$(EXEEXT)::
+	$(SEDENV) ./tst-boost $(srcdir)/BOOST.tests > tst-boost.log
+
+tst-rxspencer$(EXEEXT)::
+	$(SEDENV) ./tst-rxspencer $(srcdir)/SPENCER.tests > tst-spencer.log
+
+tst-regex2$(EXEEXT)::
+	$(SEDENV) ./tst-regex2 $(srcdir)/tst-regex2.c > tst-regex2.log
+
+# The following target is not used in GNU sed builds (only super-sed)
+
+pcretest$(EXEEXT)::
+	$(SEDENV) ./pcretest $(srcdir)/pcre1.inp pcre1.out
+	$(CMP) $(srcdir)/pcre1.good pcre1.out
+	#$(SEDENV) ./pcretest -p $(srcdir)/pcre1.inp pcre1p.out
+	#$(CMP) $(srcdir)/pcre1p.good pcre1p.out
+	$(SEDENV) ./pcretest -P $(srcdir)/pcre2.inp pcre2.out
+	$(CMP) $(srcdir)/pcre2.good pcre2.out
+	$(SEDENV) ./pcretest -P -p $(srcdir)/pcre2.inp pcre2p.out
+	$(CMP) $(srcdir)/pcre2p.good pcre2p.out
+	$(SEDENV) ./pcretest $(srcdir)/pcre3.inp pcre3.out
+	$(CMP) $(srcdir)/pcre3.good pcre3.out
+	$(SEDENV) ./pcretest -p $(srcdir)/pcre3.inp pcre3p.out
+	$(CMP) $(srcdir)/pcre3p.good pcre3p.out
+	@$(RM) pcre*.out
+
+.PHONY: \
+bug-regex7$(EXEEXT) bug-regex8$(EXEEXT) bug-regex9$(EXEEXT) \
+bug-regex10$(EXEEXT) bug-regex11$(EXEEXT) bug-regex12$(EXEEXT) \
+bug-regex13$(EXEEXT) bug-regex14$(EXEEXT) bug-regex15$(EXEEXT) bug-regex16$(EXEEXT) \
+bug-regex21$(EXEEXT) runtests$(EXEEXT) runptests$(EXEEXT) tst-regex2$(EXEEXT) \
+tst-pcre$(EXEEXT) tst-boost$(EXEEXT) tst-rxspencer$(EXEEXT) pcretest$(EXEEXT)
diff --git a/src/sed/testsuite/PCRE.tests b/src/sed/testsuite/PCRE.tests
new file mode 100644
index 0000000..0fb9cad
--- /dev/null
+++ b/src/sed/testsuite/PCRE.tests
@@ -0,0 +1,2386 @@
+# PCRE version 4.4 21-August-2003
+
+# Tests taken from PCRE and modified to suit glibc regex.
+#
+# PCRE LICENCE
+# ------------
+#
+# PCRE is a library of functions to support regular expressions whose syntax
+# and semantics are as close as possible to those of the Perl 5 language.
+#
+# Written by: Philip Hazel <ph10@cam.ac.uk>
+#
+# University of Cambridge Computing Service,
+# Cambridge, England. Phone: +44 1223 334714.
+#
+# Copyright (c) 1997-2003 University of Cambridge
+#
+# Permission is granted to anyone to use this software for any purpose on any
+# computer system, and to redistribute it freely, subject to the following
+# restrictions:
+#
+# 1. This software is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+#
+# 2. The origin of this software must not be misrepresented, either by
+#    explicit claim or by omission. In practice, this means that if you use
+#    PCRE in software that you distribute to others, commercially or
+#    otherwise, you must put a sentence like this
+#
+#      Regular expression support is provided by the PCRE library package,
+#      which is open source software, written by Philip Hazel, and copyright
+#      by the University of Cambridge, England.
+#
+#    somewhere reasonably visible in your documentation and in any relevant
+#    files or online help data or similar. A reference to the ftp site for
+#    the source, that is, to
+#
+#      ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/
+#
+#    should also be given in the documentation. However, this condition is not
+#    intended to apply to whole chains of software. If package A includes PCRE,
+#    it must acknowledge it, but if package B is software that includes package
+#    A, the condition is not imposed on package B (unless it uses PCRE
+#    independently).
+#
+# 3. Altered versions must be plainly marked as such, and must not be
+#    misrepresented as being the original software.
+#
+# 4. If PCRE is embedded in any software that is released under the GNU
+#   General Purpose Licence (GPL), or Lesser General Purpose Licence (LGPL),
+#   then the terms of that licence shall supersede any condition above with
+#   which it is incompatible.
+#
+# The documentation for PCRE, supplied in the "doc" directory, is distributed
+# under the same terms as the software itself.
+#
+# End
+#
+
+/the quick brown fox/
+    the quick brown fox
+ 0: the quick brown fox
+    The quick brown FOX
+No match
+    What do you know about the quick brown fox?
+ 0: the quick brown fox
+    What do you know about THE QUICK BROWN FOX?
+No match
+
+/The quick brown fox/i
+    the quick brown fox
+ 0: the quick brown fox
+    The quick brown FOX
+ 0: The quick brown FOX
+    What do you know about the quick brown fox?
+ 0: the quick brown fox
+    What do you know about THE QUICK BROWN FOX?
+ 0: THE QUICK BROWN FOX
+
+/a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz/
+    abxyzpqrrrabbxyyyypqAzz
+ 0: abxyzpqrrrabbxyyyypqAzz
+    abxyzpqrrrabbxyyyypqAzz
+ 0: abxyzpqrrrabbxyyyypqAzz
+    aabxyzpqrrrabbxyyyypqAzz
+ 0: aabxyzpqrrrabbxyyyypqAzz
+    aaabxyzpqrrrabbxyyyypqAzz
+ 0: aaabxyzpqrrrabbxyyyypqAzz
+    aaaabxyzpqrrrabbxyyyypqAzz
+ 0: aaaabxyzpqrrrabbxyyyypqAzz
+    abcxyzpqrrrabbxyyyypqAzz
+ 0: abcxyzpqrrrabbxyyyypqAzz
+    aabcxyzpqrrrabbxyyyypqAzz
+ 0: aabcxyzpqrrrabbxyyyypqAzz
+    aaabcxyzpqrrrabbxyyyypAzz
+ 0: aaabcxyzpqrrrabbxyyyypAzz
+    aaabcxyzpqrrrabbxyyyypqAzz
+ 0: aaabcxyzpqrrrabbxyyyypqAzz
+    aaabcxyzpqrrrabbxyyyypqqAzz
+ 0: aaabcxyzpqrrrabbxyyyypqqAzz
+    aaabcxyzpqrrrabbxyyyypqqqAzz
+ 0: aaabcxyzpqrrrabbxyyyypqqqAzz
+    aaabcxyzpqrrrabbxyyyypqqqqAzz
+ 0: aaabcxyzpqrrrabbxyyyypqqqqAzz
+    aaabcxyzpqrrrabbxyyyypqqqqqAzz
+ 0: aaabcxyzpqrrrabbxyyyypqqqqqAzz
+    aaabcxyzpqrrrabbxyyyypqqqqqqAzz
+ 0: aaabcxyzpqrrrabbxyyyypqqqqqqAzz
+    aaaabcxyzpqrrrabbxyyyypqAzz
+ 0: aaaabcxyzpqrrrabbxyyyypqAzz
+    abxyzzpqrrrabbxyyyypqAzz
+ 0: abxyzzpqrrrabbxyyyypqAzz
+    aabxyzzzpqrrrabbxyyyypqAzz
+ 0: aabxyzzzpqrrrabbxyyyypqAzz
+    aaabxyzzzzpqrrrabbxyyyypqAzz
+ 0: aaabxyzzzzpqrrrabbxyyyypqAzz
+    aaaabxyzzzzpqrrrabbxyyyypqAzz
+ 0: aaaabxyzzzzpqrrrabbxyyyypqAzz
+    abcxyzzpqrrrabbxyyyypqAzz
+ 0: abcxyzzpqrrrabbxyyyypqAzz
+    aabcxyzzzpqrrrabbxyyyypqAzz
+ 0: aabcxyzzzpqrrrabbxyyyypqAzz
+    aaabcxyzzzzpqrrrabbxyyyypqAzz
+ 0: aaabcxyzzzzpqrrrabbxyyyypqAzz
+    aaaabcxyzzzzpqrrrabbxyyyypqAzz
+ 0: aaaabcxyzzzzpqrrrabbxyyyypqAzz
+    aaaabcxyzzzzpqrrrabbbxyyyypqAzz
+ 0: aaaabcxyzzzzpqrrrabbbxyyyypqAzz
+    aaaabcxyzzzzpqrrrabbbxyyyyypqAzz
+ 0: aaaabcxyzzzzpqrrrabbbxyyyyypqAzz
+    aaabcxyzpqrrrabbxyyyypABzz
+ 0: aaabcxyzpqrrrabbxyyyypABzz
+    aaabcxyzpqrrrabbxyyyypABBzz
+ 0: aaabcxyzpqrrrabbxyyyypABBzz
+    >>>aaabxyzpqrrrabbxyyyypqAzz
+ 0: aaabxyzpqrrrabbxyyyypqAzz
+    >aaaabxyzpqrrrabbxyyyypqAzz
+ 0: aaaabxyzpqrrrabbxyyyypqAzz
+    >>>>abcxyzpqrrrabbxyyyypqAzz
+ 0: abcxyzpqrrrabbxyyyypqAzz
+    *** Failers
+No match
+    abxyzpqrrabbxyyyypqAzz
+No match
+    abxyzpqrrrrabbxyyyypqAzz
+No match
+    abxyzpqrrrabxyyyypqAzz
+No match
+    aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz
+No match
+    aaaabcxyzzzzpqrrrabbbxyyypqAzz
+No match
+    aaabcxyzpqrrrabbxyyyypqqqqqqqAzz
+No match
+
+/^(abc){1,2}zz/
+    abczz
+ 0: abczz
+ 1: abc
+    abcabczz
+ 0: abcabczz
+ 1: abc
+    *** Failers
+No match
+    zz
+No match
+    abcabcabczz
+No match
+    >>abczz
+No match
+
+/^(b+|a){1,2}c/
+    bc
+ 0: bc
+ 1: b
+    bbc
+ 0: bbc
+ 1: bb
+    bbbc
+ 0: bbbc
+ 1: bbb
+    bac
+ 0: bac
+ 1: a
+    bbac
+ 0: bbac
+ 1: a
+    aac
+ 0: aac
+ 1: a
+    abbbbbbbbbbbc
+ 0: abbbbbbbbbbbc
+ 1: bbbbbbbbbbb
+    bbbbbbbbbbbac
+ 0: bbbbbbbbbbbac
+ 1: a
+    *** Failers
+No match
+    aaac
+No match
+    abbbbbbbbbbbac
+No match
+
+/^[]cde]/
+    ]thing
+ 0: ]
+    cthing
+ 0: c
+    dthing
+ 0: d
+    ething
+ 0: e
+    *** Failers
+No match
+    athing
+No match
+    fthing
+No match
+
+/^[^]cde]/
+    athing
+ 0: a
+    fthing
+ 0: f
+    *** Failers
+ 0: *
+    ]thing
+No match
+    cthing
+No match
+    dthing
+No match
+    ething
+No match
+
+/^[0-9]+$/
+    0
+ 0: 0
+    1
+ 0: 1
+    2
+ 0: 2
+    3
+ 0: 3
+    4
+ 0: 4
+    5
+ 0: 5
+    6
+ 0: 6
+    7
+ 0: 7
+    8
+ 0: 8
+    9
+ 0: 9
+    10
+ 0: 10
+    100
+ 0: 100
+    *** Failers
+No match
+    abc
+No match
+
+/^.*nter/
+    enter
+ 0: enter
+    inter
+ 0: inter
+    uponter
+ 0: uponter
+
+/^xxx[0-9]+$/
+    xxx0
+ 0: xxx0
+    xxx1234
+ 0: xxx1234
+    *** Failers
+No match
+    xxx
+No match
+
+/^.+[0-9][0-9][0-9]$/
+    x123
+ 0: x123
+    xx123
+ 0: xx123
+    123456
+ 0: 123456
+    *** Failers
+No match
+    123
+No match
+    x1234
+ 0: x1234
+
+/^([^!]+)!(.+)=apquxz\.ixr\.zzz\.ac\.uk$/
+    abc!pqr=apquxz.ixr.zzz.ac.uk
+ 0: abc!pqr=apquxz.ixr.zzz.ac.uk
+ 1: abc
+ 2: pqr
+    *** Failers
+No match
+    !pqr=apquxz.ixr.zzz.ac.uk
+No match
+    abc!=apquxz.ixr.zzz.ac.uk
+No match
+    abc!pqr=apquxz:ixr.zzz.ac.uk
+No match
+    abc!pqr=apquxz.ixr.zzz.ac.ukk
+No match
+
+/:/
+    Well, we need a colon: somewhere
+ 0: :
+    *** Fail if we don't
+No match
+
+/([0-9a-f:]+)$/i
+    0abc
+ 0: 0abc
+ 1: 0abc
+    abc
+ 0: abc
+ 1: abc
+    fed
+ 0: fed
+ 1: fed
+    E
+ 0: E
+ 1: E
+    ::
+ 0: ::
+ 1: ::
+    5f03:12C0::932e
+ 0: 5f03:12C0::932e
+ 1: 5f03:12C0::932e
+    fed def
+ 0: def
+ 1: def
+    Any old stuff
+ 0: ff
+ 1: ff
+    *** Failers
+No match
+    0zzz
+No match
+    gzzz
+No match
+    Any old rubbish
+No match
+
+/^.*\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/
+    .1.2.3
+ 0: .1.2.3
+ 1: 1
+ 2: 2
+ 3: 3
+    A.12.123.0
+ 0: A.12.123.0
+ 1: 12
+ 2: 123
+ 3: 0
+    *** Failers
+No match
+    .1.2.3333
+No match
+    1.2.3
+No match
+    1234.2.3
+No match
+
+/^([0-9]+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/
+    1 IN SOA non-sp1 non-sp2(
+ 0: 1 IN SOA non-sp1 non-sp2(
+ 1: 1
+ 2: non-sp1
+ 3: non-sp2
+    1    IN    SOA    non-sp1    non-sp2   (
+ 0: 1    IN    SOA    non-sp1    non-sp2   (
+ 1: 1
+ 2: non-sp1
+ 3: non-sp2
+    *** Failers
+No match
+    1IN SOA non-sp1 non-sp2(
+No match
+
+/^[a-zA-Z0-9][a-zA-Z0-9-]*(\.[a-zA-Z0-9][a-zA-z0-9-]*)*\.$/
+    a.
+ 0: a.
+    Z.
+ 0: Z.
+    2.
+ 0: 2.
+    ab-c.pq-r.
+ 0: ab-c.pq-r.
+ 1: .pq-r
+    sxk.zzz.ac.uk.
+ 0: sxk.zzz.ac.uk.
+ 1: .uk
+    x-.y-.
+ 0: x-.y-.
+ 1: .y-
+    *** Failers
+No match
+    -abc.peq.
+No match
+
+/^\*\.[a-z]([a-z0-9-]*[a-z0-9]+)?(\.[a-z]([a-z0-9-]*[a-z0-9]+)?)*$/
+    *.a
+ 0: *.a
+    *.b0-a
+ 0: *.b0-a
+ 1: 0-a
+    *.c3-b.c
+ 0: *.c3-b.c
+ 1: 3-b
+ 2: .c
+    *.c-a.b-c
+ 0: *.c-a.b-c
+ 1: -a
+ 2: .b-c
+ 3: -c
+    *** Failers
+No match
+    *.0
+No match
+    *.a-
+No match
+    *.a-b.c-
+No match
+    *.c-a.0-c
+No match
+
+/^[0-9a-f](\.[0-9a-f])*$/i
+    a.b.c.d
+ 0: a.b.c.d
+ 1: .d
+    A.B.C.D
+ 0: A.B.C.D
+ 1: .D
+    a.b.c.1.2.3.C
+ 0: a.b.c.1.2.3.C
+ 1: .C
+
+/^".*"\s*(;.*)?$/
+    "1234"
+ 0: "1234"
+    "abcd" ;
+ 0: "abcd" ;
+ 1: ;
+    "" ; rhubarb
+ 0: "" ; rhubarb
+ 1: ; rhubarb
+    *** Failers
+No match
+    "1234" : things
+No match
+
+/^(a(b(c)))(d(e(f)))(h(i(j)))(k(l(m)))$/
+    abcdefhijklm
+ 0: abcdefhijklm
+ 1: abc
+ 2: bc
+ 3: c
+ 4: def
+ 5: ef
+ 6: f
+ 7: hij
+ 8: ij
+ 9: j
+10: klm
+11: lm
+12: m
+
+/^a*\w/
+    z
+ 0: z
+    az
+ 0: az
+    aaaz
+ 0: aaaz
+    a
+ 0: a
+    aa
+ 0: aa
+    aaaa
+ 0: aaaa
+    a+
+ 0: a
+    aa+
+ 0: aa
+
+/^a+\w/
+    az
+ 0: az
+    aaaz
+ 0: aaaz
+    aa
+ 0: aa
+    aaaa
+ 0: aaaa
+    aa+
+ 0: aa
+
+/^[0-9]{8}\w{2,}/
+    1234567890
+ 0: 1234567890
+    12345678ab
+ 0: 12345678ab
+    12345678__
+ 0: 12345678__
+    *** Failers
+No match
+    1234567
+No match
+
+/^[aeiou0-9]{4,5}$/
+    uoie
+ 0: uoie
+    1234
+ 0: 1234
+    12345
+ 0: 12345
+    aaaaa
+ 0: aaaaa
+    *** Failers
+No match
+    123456
+No match
+
+/\`(abc|def)=(\1){2,3}\'/
+    abc=abcabc
+ 0: abc=abcabc
+ 1: abc
+ 2: abc
+    def=defdefdef
+ 0: def=defdefdef
+ 1: def
+ 2: def
+    *** Failers
+No match
+    abc=defdef
+No match
+
+/(cat(a(ract|tonic)|erpillar)) \1()2(3)/
+    cataract cataract23
+ 0: cataract cataract23
+ 1: cataract
+ 2: aract
+ 3: ract
+ 4: 
+ 5: 3
+    catatonic catatonic23
+ 0: catatonic catatonic23
+ 1: catatonic
+ 2: atonic
+ 3: tonic
+ 4: 
+ 5: 3
+    caterpillar caterpillar23
+ 0: caterpillar caterpillar23
+ 1: caterpillar
+ 2: erpillar
+ 3: <unset>
+ 4: 
+ 5: 3
+
+
+/^From +([^ ]+) +[a-zA-Z][a-zA-Z][a-zA-Z] +[a-zA-Z][a-zA-Z][a-zA-Z] +[0-9]?[0-9] +[0-9][0-9]:[0-9][0-9]/
+    From abcd  Mon Sep 01 12:33:02 1997
+ 0: From abcd  Mon Sep 01 12:33
+ 1: abcd
+
+/^From\s+\S+\s+([a-zA-Z]{3}\s+){2}[0-9]{1,2}\s+[0-9][0-9]:[0-9][0-9]/
+    From abcd  Mon Sep 01 12:33:02 1997
+ 0: From abcd  Mon Sep 01 12:33
+ 1: Sep 
+    From abcd  Mon Sep  1 12:33:02 1997
+ 0: From abcd  Mon Sep  1 12:33
+ 1: Sep  
+    *** Failers
+No match
+    From abcd  Sep 01 12:33:02 1997
+No match
+
+/^(a)\1{2,3}(.)/
+    aaab
+ 0: aaab
+ 1: a
+ 2: b
+    aaaab
+ 0: aaaab
+ 1: a
+ 2: b
+    aaaaab
+ 0: aaaaa
+ 1: a
+ 2: a
+    aaaaaab
+ 0: aaaaa
+ 1: a
+ 2: a
+
+/^[ab]{1,3}(ab*|b)/
+    aabbbbb
+ 0: aabbbbb
+ 1: abbbbb
+
+/^(cow|)\1(bell)/
+    cowcowbell
+ 0: cowcowbell
+ 1: cow
+ 2: bell
+    bell
+ 0: bell
+ 1: 
+ 2: bell
+    *** Failers
+No match
+    cowbell
+No match
+
+/^(a|)\1+b/
+    aab
+ 0: aab
+ 1: a
+    aaaab
+ 0: aaaab
+ 1: a
+    b
+ 0: b
+ 1: 
+    *** Failers
+No match
+    ab
+No match
+
+/^(a|)\1{2}b/
+    aaab
+ 0: aaab
+ 1: a
+    b
+ 0: b
+ 1: 
+    *** Failers
+No match
+    ab
+No match
+    aab
+No match
+    aaaab
+No match
+
+/^(a|)\1{2,3}b/
+    aaab
+ 0: aaab
+ 1: a
+    aaaab
+ 0: aaaab
+ 1: a
+    b
+ 0: b
+ 1: 
+    *** Failers
+No match
+    ab
+No match
+    aab
+No match
+    aaaaab
+No match
+
+/ab{1,3}bc/
+    abbbbc
+ 0: abbbbc
+    abbbc
+ 0: abbbc
+    abbc
+ 0: abbc
+    *** Failers
+No match
+    abc
+No match
+    abbbbbc
+No match
+
+/([^.]*)\.([^:]*):[T ]+(.*)/
+    track1.title:TBlah blah blah
+ 0: track1.title:TBlah blah blah
+ 1: track1
+ 2: title
+ 3: Blah blah blah
+
+/([^.]*)\.([^:]*):[T ]+(.*)/i
+    track1.title:TBlah blah blah
+ 0: track1.title:TBlah blah blah
+ 1: track1
+ 2: title
+ 3: Blah blah blah
+
+/([^.]*)\.([^:]*):[t ]+(.*)/i
+    track1.title:TBlah blah blah
+ 0: track1.title:TBlah blah blah
+ 1: track1
+ 2: title
+ 3: Blah blah blah
+
+/^abc$/
+    abc
+ 0: abc
+    *** Failers
+No match
+
+/[-az]+/
+    az-
+ 0: az-
+    *** Failers
+ 0: a
+    b
+No match
+
+/[az-]+/
+    za-
+ 0: za-
+    *** Failers
+ 0: a
+    b
+No match
+
+/[a-z]+/
+    abcdxyz
+ 0: abcdxyz
+
+/[0-9-]+/
+    12-34
+ 0: 12-34
+    *** Failers
+No match
+    aaa
+No match
+
+/(abc)\1/i
+    abcabc
+ 0: abcabc
+ 1: abc
+    ABCabc
+ 0: ABCabc
+ 1: ABC
+    abcABC
+ 0: abcABC
+ 1: abc
+
+/a{0}bc/
+    bc
+ 0: bc
+
+/^([^a])([^b])([^c]*)([^d]{3,4})/
+    baNOTccccd
+ 0: baNOTcccc
+ 1: b
+ 2: a
+ 3: NOT
+ 4: cccc
+    baNOTcccd
+ 0: baNOTccc
+ 1: b
+ 2: a
+ 3: NOT
+ 4: ccc
+    baNOTccd
+ 0: baNOTcc
+ 1: b
+ 2: a
+ 3: NO
+ 4: Tcc
+    bacccd
+ 0: baccc
+ 1: b
+ 2: a
+ 3: 
+ 4: ccc
+    *** Failers
+ 0: *** Failers
+ 1: *
+ 2: *
+ 3: * Fail
+ 4: ers
+    anything
+No match
+    baccd
+No match
+
+/[^a]/
+    Abc
+ 0: A
+
+/[^a]/i
+    Abc 
+ 0: b
+
+/[^a]+/
+    AAAaAbc
+ 0: AAA
+
+/[^a]+/i
+    AAAaAbc
+ 0: bc
+
+/[^k]$/
+    abc
+ 0: c
+    *** Failers
+ 0: s
+    abk
+No match
+
+/[^k]{2,3}$/
+    abc
+ 0: abc
+    kbc
+ 0: bc
+    kabc
+ 0: abc
+    *** Failers
+ 0: ers
+    abk
+No match
+    akb
+No match
+    akk 
+No match
+
+/^[0-9]{8,}@.+[^k]$/
+    12345678@a.b.c.d
+ 0: 12345678@a.b.c.d
+    123456789@x.y.z
+ 0: 123456789@x.y.z
+    *** Failers
+No match
+    12345678@x.y.uk
+No match
+    1234567@a.b.c.d       
+No match
+
+/(a)\1{8,}/
+    aaaaaaaaa
+ 0: aaaaaaaaa
+ 1: a
+    aaaaaaaaaa
+ 0: aaaaaaaaaa
+ 1: a
+    *** Failers
+No match
+    aaaaaaa   
+No match
+
+/[^a]/
+    aaaabcd
+ 0: b
+    aaAabcd 
+ 0: A
+
+/[^a]/i
+    aaaabcd
+ 0: b
+    aaAabcd 
+ 0: b
+
+/[^az]/
+    aaaabcd
+ 0: b
+    aaAabcd 
+ 0: A
+
+/[^az]/i
+    aaaabcd
+ 0: b
+    aaAabcd 
+ 0: b
+
+/P[^*]TAIRE[^*]{1,6}LL/
+    xxxxxxxxxxxPSTAIREISLLxxxxxxxxx
+ 0: PSTAIREISLL
+
+/P[^*]TAIRE[^*]{1,}LL/
+    xxxxxxxxxxxPSTAIREISLLxxxxxxxxx
+ 0: PSTAIREISLL
+
+/(\.[0-9][0-9][1-9]?)[0-9]+/
+    1.230003938
+ 0: .230003938
+ 1: .23
+    1.875000282   
+ 0: .875000282
+ 1: .875
+    1.235  
+ 0: .235
+ 1: .23
+                  
+/\b(foo)\s+(\w+)/i
+    Food is on the foo table
+ 0: foo table
+ 1: foo
+ 2: table
+    
+/foo(.*)bar/
+    The food is under the bar in the barn.
+ 0: food is under the bar in the bar
+ 1: d is under the bar in the 
+    
+/(.*)([0-9]*)/
+    I have 2 numbers: 53147
+ 0: I have 2 numbers: 53147
+ 1: I have 2 numbers: 53147
+ 2: 
+    
+/(.*)([0-9]+)/
+    I have 2 numbers: 53147
+ 0: I have 2 numbers: 53147
+ 1: I have 2 numbers: 5314
+ 2: 7
+
+/(.*)([0-9]+)$/
+    I have 2 numbers: 53147
+ 0: I have 2 numbers: 53147
+ 1: I have 2 numbers: 5314
+ 2: 7
+
+/(.*)\b([0-9]+)$/
+    I have 2 numbers: 53147
+ 0: I have 2 numbers: 53147
+ 1: I have 2 numbers: 
+ 2: 53147
+
+/(.*[^0-9])([0-9]+)$/
+    I have 2 numbers: 53147
+ 0: I have 2 numbers: 53147
+ 1: I have 2 numbers: 
+ 2: 53147
+
+/[[:digit:]][[:digit:]]\/[[:digit:]][[:digit:]]\/[[:digit:]][[:digit:]][[:digit:]][[:digit:]]/
+    01/01/2000
+ 0: 01/01/2000
+
+/^(a){0,0}/
+    bcd
+ 0: 
+    abc
+ 0: 
+    aab     
+ 0: 
+
+/^(a){0,1}/
+    bcd
+ 0: 
+    abc
+ 0: a
+ 1: a
+    aab  
+ 0: a
+ 1: a
+
+/^(a){0,2}/
+    bcd
+ 0: 
+    abc
+ 0: a
+ 1: a
+    aab  
+ 0: aa
+ 1: a
+
+/^(a){0,3}/
+    bcd
+ 0: 
+    abc
+ 0: a
+ 1: a
+    aab
+ 0: aa
+ 1: a
+    aaa   
+ 0: aaa
+ 1: a
+
+/^(a){0,}/
+    bcd
+ 0: 
+    abc
+ 0: a
+ 1: a
+    aab
+ 0: aa
+ 1: a
+    aaa
+ 0: aaa
+ 1: a
+    aaaaaaaa    
+ 0: aaaaaaaa
+ 1: a
+
+/^(a){1,1}/
+    bcd
+No match
+    abc
+ 0: a
+ 1: a
+    aab  
+ 0: a
+ 1: a
+
+/^(a){1,2}/
+    bcd
+No match
+    abc
+ 0: a
+ 1: a
+    aab  
+ 0: aa
+ 1: a
+
+/^(a){1,3}/
+    bcd
+No match
+    abc
+ 0: a
+ 1: a
+    aab
+ 0: aa
+ 1: a
+    aaa   
+ 0: aaa
+ 1: a
+
+/^(a){1,}/
+    bcd
+No match
+    abc
+ 0: a
+ 1: a
+    aab
+ 0: aa
+ 1: a
+    aaa
+ 0: aaa
+ 1: a
+    aaaaaaaa    
+ 0: aaaaaaaa
+ 1: a
+
+/^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]/
+    123456654321
+ 0: 123456654321
+
+/^[[:digit:]][[:digit:]][[:digit:]][[:digit:]][[:digit:]][[:digit:]][[:digit:]][[:digit:]][[:digit:]][[:digit:]][[:digit:]][[:digit:]]/
+    123456654321 
+ 0: 123456654321
+
+/^[abc]{12}/
+    abcabcabcabc
+ 0: abcabcabcabc
+    
+/^[a-c]{12}/
+    abcabcabcabc
+ 0: abcabcabcabc
+    
+/^(a|b|c){12}/
+    abcabcabcabc 
+ 0: abcabcabcabc
+ 1: c
+
+/^[abcdefghijklmnopqrstuvwxy0123456789]/
+    n
+ 0: n
+    *** Failers 
+No match
+    z 
+No match
+
+/abcde{0,0}/
+    abcd
+ 0: abcd
+    *** Failers
+No match
+    abce  
+No match
+
+/ab[cd]{0,0}e/
+    abe
+ 0: abe
+    *** Failers
+No match
+    abcde 
+No match
+    
+/ab(c){0,0}d/
+    abd
+ 0: abd
+    *** Failers
+No match
+    abcd   
+No match
+
+/a(b*)/
+    a
+ 0: a
+ 1: 
+    ab
+ 0: ab
+ 1: b
+    abbbb
+ 0: abbbb
+ 1: bbbb
+    *** Failers
+ 0: a
+ 1: 
+    bbbbb    
+No match
+    
+/ab[0-9]{0}e/
+    abe
+ 0: abe
+    *** Failers
+No match
+    ab1e   
+No match
+    
+/(A|B)*CD/
+    CD 
+ 0: CD
+
+/(AB)*\1/
+    ABABAB
+ 0: ABABAB
+ 1: AB
+    
+/([0-9]+)(\w)/
+    12345a
+ 0: 12345a
+ 1: 12345
+ 2: a
+    12345+ 
+ 0: 12345
+ 1: 1234
+ 2: 5
+
+/(abc|)+/
+    abc
+ 0: abc
+ 1: abc
+    abcabc
+ 0: abcabc
+ 1: abc
+    abcabcabc
+ 0: abcabcabc
+ 1: abc
+    xyz      
+ 0: 
+ 1: 
+
+/([a]*)*/
+    a
+ 0: a
+ 1: a
+    aaaaa 
+ 0: aaaaa
+ 1: aaaaa
+
+/([ab]*)*/
+    a
+ 0: a
+ 1: a
+    b
+ 0: b
+ 1: b
+    ababab
+ 0: ababab
+ 1: ababab
+    aaaabcde
+ 0: aaaab
+ 1: aaaab
+    bbbb    
+ 0: bbbb
+ 1: bbbb
+
+/([^a]*)*/
+    b
+ 0: b
+ 1: b
+    bbbb
+ 0: bbbb
+ 1: bbbb
+    aaa   
+ 0: 
+
+/([^ab]*)*/
+    cccc
+ 0: cccc
+ 1: cccc
+    abab  
+ 0: 
+
+/abc/
+    abc
+ 0: abc
+    xabcy
+ 0: abc
+    ababc
+ 0: abc
+    *** Failers
+No match
+    xbc
+No match
+    axc
+No match
+    abx
+No match
+
+/ab*c/
+    abc
+ 0: abc
+
+/ab*bc/
+    abc
+ 0: abc
+    abbc
+ 0: abbc
+    abbbbc
+ 0: abbbbc
+
+/.{1}/
+    abbbbc
+ 0: a
+
+/.{3,4}/
+    abbbbc
+ 0: abbb
+
+/ab{0,}bc/
+    abbbbc
+ 0: abbbbc
+
+/ab+bc/
+    abbc
+ 0: abbc
+    *** Failers
+No match
+    abc
+No match
+    abq
+No match
+
+/ab+bc/
+    abbbbc
+ 0: abbbbc
+
+/ab{1,}bc/
+    abbbbc
+ 0: abbbbc
+
+/ab{1,3}bc/
+    abbbbc
+ 0: abbbbc
+
+/ab{3,4}bc/
+    abbbbc
+ 0: abbbbc
+
+/ab{4,5}bc/
+    *** Failers
+No match
+    abq
+No match
+    abbbbc
+No match
+
+/ab?bc/
+    abbc
+ 0: abbc
+    abc
+ 0: abc
+
+/ab{0,1}bc/
+    abc
+ 0: abc
+
+/ab?c/
+    abc
+ 0: abc
+
+/ab{0,1}c/
+    abc
+ 0: abc
+
+/^abc$/
+    abc
+ 0: abc
+    *** Failers
+No match
+    abbbbc
+No match
+    abcc
+No match
+
+/^abc/
+    abcc
+ 0: abc
+
+/abc$/
+    aabc
+ 0: abc
+    *** Failers
+No match
+    aabc
+ 0: abc
+    aabcd
+No match
+
+/^/
+    abc
+ 0: 
+
+/$/
+    abc
+ 0: 
+
+/a.c/
+    abc
+ 0: abc
+    axc
+ 0: axc
+
+/a.*c/
+    axyzc
+ 0: axyzc
+
+/a[bc]d/
+    abd
+ 0: abd
+    *** Failers
+No match
+    axyzd
+No match
+    abc
+No match
+
+/a[b-d]e/
+    ace
+ 0: ace
+
+/a[b-d]/
+    aac
+ 0: ac
+
+/a[-b]/
+    a-
+ 0: a-
+
+/a[b-]/
+    a-
+ 0: a-
+
+/a[]]b/
+    a]b
+ 0: a]b
+
+/a[^bc]d/
+    aed
+ 0: aed
+    *** Failers
+No match
+    abd
+No match
+    abd
+No match
+
+/a[^-b]c/
+    adc
+ 0: adc
+
+/a[^]b]c/
+    adc
+ 0: adc
+    *** Failers
+No match
+    a-c
+ 0: a-c
+    a]c
+No match
+
+/\ba\b/
+    a-
+ 0: a
+    -a
+ 0: a
+    -a-
+ 0: a
+
+/\by\b/
+    *** Failers
+No match
+    xy
+No match
+    yz
+No match
+    xyz
+No match
+
+/\Ba\B/
+    *** Failers
+ 0: a
+    a-
+No match
+    -a
+No match
+    -a-
+No match
+
+/\By\b/
+    xy
+ 0: y
+
+/\by\B/
+    yz
+ 0: y
+
+/\By\B/
+    xyz
+ 0: y
+
+/\w/
+    a
+ 0: a
+
+/\W/
+    -
+ 0: -
+    *** Failers
+ 0: *
+    -
+ 0: -
+    a
+No match
+
+/a\sb/
+    a b
+ 0: a b
+
+/a\Sb/
+    a-b
+ 0: a-b
+    *** Failers
+No match
+    a-b
+ 0: a-b
+    a b
+No match
+
+/[0-9]/
+    1
+ 0: 1
+
+/[^0-9]/
+    -
+ 0: -
+    *** Failers
+ 0: *
+    -
+ 0: -
+    1
+No match
+
+/ab|cd/
+    abc
+ 0: ab
+    abcd
+ 0: ab
+
+/()ef/
+    def
+ 0: ef
+ 1: 
+
+/a\(b/
+    a(b
+ 0: a(b
+
+/a\(*b/
+    ab
+ 0: ab
+    a((b
+ 0: a((b
+
+/((a))/
+    abc
+ 0: a
+ 1: a
+ 2: a
+
+/(a)b(c)/
+    abc
+ 0: abc
+ 1: a
+ 2: c
+
+/a+b+c/
+    aabbabc
+ 0: abc
+
+/a{1,}b{1,}c/
+    aabbabc
+ 0: abc
+
+/(a+|b)*/
+    ab
+ 0: ab
+ 1: b
+
+/(a+|b){0,}/
+    ab
+ 0: ab
+ 1: b
+
+/(a+|b)+/
+    ab
+ 0: ab
+ 1: b
+
+/(a+|b){1,}/
+    ab
+ 0: ab
+ 1: b
+
+/(a+|b)?/
+    ab
+ 0: a
+ 1: a
+
+/(a+|b){0,1}/
+    ab
+ 0: a
+ 1: a
+
+/[^ab]*/
+    cde
+ 0: cde
+
+/abc/
+    *** Failers
+No match
+    b
+No match
+    
+
+/a*/
+    
+
+/([abc])*d/
+    abbbcd
+ 0: abbbcd
+ 1: c
+
+/([abc])*bcd/
+    abcd
+ 0: abcd
+ 1: a
+
+/a|b|c|d|e/
+    e
+ 0: e
+
+/(a|b|c|d|e)f/
+    ef
+ 0: ef
+ 1: e
+
+/abcd*efg/
+    abcdefg
+ 0: abcdefg
+
+/ab*/
+    xabyabbbz
+ 0: ab
+    xayabbbz
+ 0: a
+
+/(ab|cd)e/
+    abcde
+ 0: cde
+ 1: cd
+
+/[abhgefdc]ij/
+    hij
+ 0: hij
+
+/(abc|)ef/
+    abcdef
+ 0: ef
+ 1: 
+
+/(a|b)c*d/
+    abcd
+ 0: bcd
+ 1: b
+
+/(ab|ab*)bc/
+    abc
+ 0: abc
+ 1: a
+
+/a([bc]*)c*/
+    abc
+ 0: abc
+ 1: bc
+
+/a([bc]*)(c*d)/
+    abcd
+ 0: abcd
+ 1: bc
+ 2: d
+
+/a([bc]+)(c*d)/
+    abcd
+ 0: abcd
+ 1: bc
+ 2: d
+
+/a([bc]*)(c+d)/
+    abcd
+ 0: abcd
+ 1: b
+ 2: cd
+
+/a[bcd]*dcdcde/
+    adcdcde
+ 0: adcdcde
+
+/a[bcd]+dcdcde/
+    *** Failers
+No match
+    abcde
+No match
+    adcdcde
+No match
+
+/(ab|a)b*c/
+    abc
+ 0: abc
+ 1: ab
+
+/((a)(b)c)(d)/
+    abcd
+ 0: abcd
+ 1: abc
+ 2: a
+ 3: b
+ 4: d
+
+/[a-zA-Z_][a-zA-Z0-9_]*/
+    alpha
+ 0: alpha
+
+/^a(bc+|b[eh])g|.h$/
+    abh
+ 0: bh
+
+/(bc+d$|ef*g.|h?i(j|k))/
+    effgz
+ 0: effgz
+ 1: effgz
+    ij
+ 0: ij
+ 1: ij
+ 2: j
+    reffgz
+ 0: effgz
+ 1: effgz
+    *** Failers
+No match
+    effg
+No match
+    bcdd
+No match
+
+/((((((((((a))))))))))/
+    a
+ 0: a
+ 1: a
+ 2: a
+ 3: a
+ 4: a
+ 5: a
+ 6: a
+ 7: a
+ 8: a
+ 9: a
+10: a
+
+/((((((((((a))))))))))\9/
+    aa
+ 0: aa
+ 1: a
+ 2: a
+ 3: a
+ 4: a
+ 5: a
+ 6: a
+ 7: a
+ 8: a
+ 9: a
+10: a
+
+/(((((((((a)))))))))/
+    a
+ 0: a
+ 1: a
+ 2: a
+ 3: a
+ 4: a
+ 5: a
+ 6: a
+ 7: a
+ 8: a
+ 9: a
+
+/multiple words of text/
+    *** Failers
+No match
+    aa
+No match
+    uh-uh
+No match
+
+/multiple words/
+    multiple words, yeah
+ 0: multiple words
+
+/(.*)c(.*)/
+    abcde
+ 0: abcde
+ 1: ab
+ 2: de
+
+/\((.*), (.*)\)/
+    (a, b)
+ 0: (a, b)
+ 1: a
+ 2: b
+
+/abcd/
+    abcd
+ 0: abcd
+
+/a(bc)d/
+    abcd
+ 0: abcd
+ 1: bc
+
+/a[-]?c/
+    ac
+ 0: ac
+
+/(abc)\1/
+    abcabc
+ 0: abcabc
+ 1: abc
+
+/([a-c]*)\1/
+    abcabc
+ 0: abcabc
+ 1: abc
+
+/(a)|\1/
+    a
+ 0: a
+ 1: a
+    *** Failers
+ 0: a
+ 1: a
+    ab
+ 0: a
+ 1: a
+    x
+No match
+
+/abc/i
+    ABC
+ 0: ABC
+    XABCY
+ 0: ABC
+    ABABC
+ 0: ABC
+    *** Failers
+No match
+    aaxabxbaxbbx
+No match
+    XBC
+No match
+    AXC
+No match
+    ABX
+No match
+
+/ab*c/i
+    ABC
+ 0: ABC
+
+/ab*bc/i
+    ABC
+ 0: ABC
+    ABBC
+ 0: ABBC
+
+/ab+bc/i
+    *** Failers
+No match
+    ABC
+No match
+    ABQ
+No match
+
+/ab+bc/i
+    ABBBBC
+ 0: ABBBBC
+
+/^abc$/i
+    ABC
+ 0: ABC
+    *** Failers
+No match
+    ABBBBC
+No match
+    ABCC
+No match
+
+/^abc/i
+    ABCC
+ 0: ABC
+
+/abc$/i
+    AABC
+ 0: ABC
+
+/^/i
+    ABC
+ 0: 
+
+/$/i
+    ABC
+ 0: 
+
+/a.c/i
+    ABC
+ 0: ABC
+    AXC
+ 0: AXC
+
+/a.*c/i
+    *** Failers
+No match
+    AABC
+ 0: AABC
+    AXYZD
+No match
+
+/a[bc]d/i
+    ABD
+ 0: ABD
+
+/a[b-d]e/i
+    ACE
+ 0: ACE
+    *** Failers
+No match
+    ABC
+No match
+    ABD
+No match
+
+/a[b-d]/i
+    AAC
+ 0: AC
+
+/a[-b]/i
+    A-
+ 0: A-
+
+/a[b-]/i
+    A-
+ 0: A-
+
+/a[]]b/i
+    A]B
+ 0: A]B
+
+/a[^bc]d/i
+    AED
+ 0: AED
+
+/a[^-b]c/i
+    ADC
+ 0: ADC
+    *** Failers
+No match
+    ABD
+No match
+    A-C
+No match
+
+/a[^]b]c/i
+    ADC
+ 0: ADC
+
+/ab|cd/i
+    ABC
+ 0: AB
+    ABCD
+ 0: AB
+
+/()ef/i
+    DEF
+ 0: EF
+ 1: 
+
+/$b/i
+    *** Failers
+No match
+    A]C
+No match
+    B
+No match
+
+/a\(b/i
+    A(B
+ 0: A(B
+
+/a\(*b/i
+    AB
+ 0: AB
+    A((B
+ 0: A((B
+
+/((a))/i
+    ABC
+ 0: A
+ 1: A
+ 2: A
+
+/(a)b(c)/i
+    ABC
+ 0: ABC
+ 1: A
+ 2: C
+
+/a+b+c/i
+    AABBABC
+ 0: ABC
+
+/a{1,}b{1,}c/i
+    AABBABC
+ 0: ABC
+
+/(a+|b)*/i
+    AB
+ 0: AB
+ 1: B
+
+/(a+|b){0,}/i
+    AB
+ 0: AB
+ 1: B
+
+/(a+|b)+/i
+    AB
+ 0: AB
+ 1: B
+
+/(a+|b){1,}/i
+    AB
+ 0: AB
+ 1: B
+
+/(a+|b)?/i
+    AB
+ 0: A
+ 1: A
+
+/(a+|b){0,1}/i
+    AB
+ 0: A
+ 1: A
+
+/[^ab]*/i
+    CDE
+ 0: CDE
+
+/([abc])*d/i
+    ABBBCD
+ 0: ABBBCD
+ 1: C
+
+/([abc])*bcd/i
+    ABCD
+ 0: ABCD
+ 1: A
+
+/a|b|c|d|e/i
+    E
+ 0: E
+
+/(a|b|c|d|e)f/i
+    EF
+ 0: EF
+ 1: E
+
+/abcd*efg/i
+    ABCDEFG
+ 0: ABCDEFG
+
+/ab*/i
+    XABYABBBZ
+ 0: AB
+    XAYABBBZ
+ 0: A
+
+/(ab|cd)e/i
+    ABCDE
+ 0: CDE
+ 1: CD
+
+/[abhgefdc]ij/i
+    HIJ
+ 0: HIJ
+
+/^(ab|cd)e/i
+    ABCDE
+No match
+
+/(abc|)ef/i
+    ABCDEF
+ 0: EF
+ 1: 
+
+/(a|b)c*d/i
+    ABCD
+ 0: BCD
+ 1: B
+
+/(ab|ab*)bc/i
+    ABC
+ 0: ABC
+ 1: A
+
+/a([bc]*)c*/i
+    ABC
+ 0: ABC
+ 1: BC
+
+/a([bc]*)(c*d)/i
+    ABCD
+ 0: ABCD
+ 1: BC
+ 2: D
+
+/a([bc]+)(c*d)/i
+    ABCD
+ 0: ABCD
+ 1: BC
+ 2: D
+
+/a([bc]*)(c+d)/i
+    ABCD
+ 0: ABCD
+ 1: B
+ 2: CD
+
+/a[bcd]*dcdcde/i
+    ADCDCDE
+ 0: ADCDCDE
+
+/a[bcd]+dcdcde/i
+
+/(ab|a)b*c/i
+    ABC
+ 0: ABC
+ 1: AB
+
+/((a)(b)c)(d)/i
+    ABCD
+ 0: ABCD
+ 1: ABC
+ 2: A
+ 3: B
+ 4: D
+
+/[a-zA-Z_][a-zA-Z0-9_]*/i
+    ALPHA
+ 0: ALPHA
+
+/^a(bc+|b[eh])g|.h$/i
+    ABH
+ 0: BH
+
+/(bc+d$|ef*g.|h?i(j|k))/i
+    EFFGZ
+ 0: EFFGZ
+ 1: EFFGZ
+    IJ
+ 0: IJ
+ 1: IJ
+ 2: J
+    REFFGZ
+ 0: EFFGZ
+ 1: EFFGZ
+    *** Failers
+No match
+    ADCDCDE
+No match
+    EFFG
+No match
+    BCDD
+No match
+
+/((((((((((a))))))))))/i
+    A
+ 0: A
+ 1: A
+ 2: A
+ 3: A
+ 4: A
+ 5: A
+ 6: A
+ 7: A
+ 8: A
+ 9: A
+10: A
+
+/((((((((((a))))))))))\9/i
+    AA
+ 0: AA
+ 1: A
+ 2: A
+ 3: A
+ 4: A
+ 5: A
+ 6: A
+ 7: A
+ 8: A
+ 9: A
+10: A
+
+/(((((((((a)))))))))/i
+    A
+ 0: A
+ 1: A
+ 2: A
+ 3: A
+ 4: A
+ 5: A
+ 6: A
+ 7: A
+ 8: A
+ 9: A
+
+/multiple words of text/i
+    *** Failers
+No match
+    AA
+No match
+    UH-UH
+No match
+
+/multiple words/i
+    MULTIPLE WORDS, YEAH
+ 0: MULTIPLE WORDS
+
+/(.*)c(.*)/i
+    ABCDE
+ 0: ABCDE
+ 1: AB
+ 2: DE
+
+/\((.*), (.*)\)/i
+    (A, B)
+ 0: (A, B)
+ 1: A
+ 2: B
+
+/abcd/i
+    ABCD
+ 0: ABCD
+
+/a(bc)d/i
+    ABCD
+ 0: ABCD
+ 1: BC
+
+/a[-]?c/i
+    AC
+ 0: AC
+
+/(abc)\1/i
+    ABCABC
+ 0: ABCABC
+ 1: ABC
+
+/([a-c]*)\1/i
+    ABCABC
+ 0: ABCABC
+ 1: ABC
+
+/((foo)|(bar))*/
+    foobar
+ 0: foobar
+ 1: bar
+ 2: foo
+ 3: bar
+
+/^(.+)?B/
+    AB
+ 0: AB
+ 1: A
+
+/^([^a-z])|(\^)$/
+    .
+ 0: .
+ 1: .
+
+/^[<>]&/
+    <&OUT
+ 0: <&
+
+/^(){3,5}/
+    abc
+ 0: 
+ 1: 
+
+/^(a+)*ax/
+    aax
+ 0: aax
+ 1: a
+
+/^((a|b)+)*ax/
+    aax
+ 0: aax
+ 1: a
+ 2: a
+
+/^((a|bc)+)*ax/
+    aax
+ 0: aax
+ 1: a
+ 2: a
+
+/(a|x)*ab/
+    cab
+ 0: ab
+
+/(a)*ab/
+    cab
+ 0: ab
+
+/(ab)[0-9]\1/i
+    Ab4ab
+ 0: Ab4ab
+ 1: Ab
+    ab4Ab
+ 0: ab4Ab
+ 1: ab
+
+/foo\w*[0-9]{4}baz/
+    foobar1234baz
+ 0: foobar1234baz
+
+/(\w+:)+/
+    one:
+ 0: one:
+ 1: one:
+
+/((\w|:)+::)?(\w+)$/
+    abcd
+ 0: abcd
+ 1: <unset>
+ 2: <unset>
+ 3: abcd
+    xy:z:::abcd
+ 0: xy:z:::abcd
+ 1: xy:z:::
+ 2: :
+ 3: abcd
+
+/^[^bcd]*(c+)/
+    aexycd
+ 0: aexyc
+ 1: c
+
+/(a*)b+/
+    caab
+ 0: aab
+ 1: aa
+
+/((\w|:)+::)?(\w+)$/
+    abcd
+ 0: abcd
+ 1: <unset>
+ 2: <unset>
+ 3: abcd
+    xy:z:::abcd
+ 0: xy:z:::abcd
+ 1: xy:z:::
+ 2: :
+ 3: abcd
+    *** Failers
+ 0: Failers
+ 1: <unset>
+ 2: <unset>
+ 3: Failers
+    abcd:
+No match
+    abcd:
+No match
+
+/^[^bcd]*(c+)/
+    aexycd
+ 0: aexyc
+ 1: c
+
+/((Z)+|A)*/
+    ZABCDEFG
+ 0: ZA
+ 1: A
+ 2: Z
+
+/(Z()|A)*/
+    ZABCDEFG
+ 0: ZA
+ 1: A
+ 2: 
+
+/(Z(())|A)*/
+    ZABCDEFG
+ 0: ZA
+ 1: A
+ 2: 
+ 3: 
+
+/(.*)[0-9]+\1/
+    abc123abc
+ 0: abc123abc
+ 1: abc
+    abc123bc 
+ 0: bc123bc
+ 1: bc
+
+/((.*))[0-9]+\1/
+    abc123abc
+ 0: abc123abc
+ 1: abc
+ 2: abc
+    abc123bc  
+ 0: bc123bc
+ 1: bc
+ 2: bc
+
+/^a{2,5}$/
+    aa
+ 0: aa
+    aaa
+ 0: aaa
+    aaaa
+ 0: aaaa
+    aaaaa
+ 0: aaaaa
+    *** Failers
+No match
+    a
+No match
+    b
+No match
+    aaaaab
+No match
+    aaaaaa
diff --git a/src/sed/testsuite/SPENCER.tests b/src/sed/testsuite/SPENCER.tests
new file mode 100644
index 0000000..b84a270
--- /dev/null
+++ b/src/sed/testsuite/SPENCER.tests
@@ -0,0 +1,538 @@
+# regular expression test set
+# Lines are at least three fields, separated by one or more tabs.  "" stands
+# for an empty field.  First field is an RE.  Second field is flags.  If
+# C flag given, regcomp() is expected to fail, and the third field is the
+# error name (minus the leading REG_).
+#
+# Otherwise it is expected to succeed, and the third field is the string to
+# try matching it against.  If there is no fourth field, the match is
+# expected to fail.  If there is a fourth field, it is the substring that
+# the RE is expected to match.  If there is a fifth field, it is a comma-
+# separated list of what the subexpressions should match, with - indicating
+# no match for that one.  In both the fourth and fifth fields, a (sub)field
+# starting with @ indicates that the (sub)expression is expected to match
+# a null string followed by the stuff after the @; this provides a way to
+# test where null strings match.  The character `N' in REs and strings
+# is newline, `S' is space, `T' is tab, `Z' is NUL.
+#
+# The full list of flags:
+#	-	placeholder, does nothing
+#	b	RE is a BRE, not an ERE
+#	&	try it as both an ERE and a BRE
+#	C	regcomp() error expected, third field is error name
+#	i	REG_ICASE
+#	m	("mundane") REG_NOSPEC
+#	s	REG_NOSUB (not really testable)
+#	n	REG_NEWLINE
+#	^	REG_NOTBOL
+#	$	REG_NOTEOL
+#	#	REG_STARTEND (see below)
+#	p	REG_PEND
+#
+# For REG_STARTEND, the start/end offsets are those of the substring
+# enclosed in ().
+
+# basics
+a		&	a	a
+abc		&	abc	abc
+abc|de		-	abc	abc
+a|b|c		-	abc	a
+
+# parentheses and perversions thereof
+a(b)c		-	abc	abc
+a\(b\)c		b	abc	abc
+a(		C	EPAREN
+a(		b	a(	a(
+a\(		-	a(	a(
+a\(		bC	EPAREN
+a\(b		bC	EPAREN
+a(b		C	EPAREN
+a(b		b	a(b	a(b
+# gag me with a right parenthesis -- 1003.2 goofed here (my fault, partly)
+a)		-	a)	a)
+)		-	)	)
+# end gagging (in a just world, those *should* give EPAREN)
+a)		b	a)	a)
+a\)		bC	EPAREN
+\)		bC	EPAREN
+a()b		-	ab	ab
+a\(\)b		b	ab	ab
+
+# anchoring and REG_NEWLINE
+^abc$		&	abc	abc
+a^b		-	a^b
+a^b		b	a^b	a^b
+a$b		-	a$b
+a$b		b	a$b	a$b
+^		&	abc	@abc
+$		&	abc	@
+^$		&	""	@
+$^		-	""	@
+\($\)\(^\)	b	""	@
+# stop retching, those are legitimate (although disgusting)
+^^		-	""	@
+$$		-	""	@
+b$		&	abNc
+b$		&n	abNc	b
+^b$		&	aNbNc
+^b$		&n	aNbNc	b
+^$		&n	aNNb	@Nb
+^$		n	abc
+^$		n	abcN	@
+$^		n	aNNb	@Nb
+\($\)\(^\)	bn	aNNb	@Nb
+^^		n^	aNNb	@Nb
+$$		n	aNNb	@NN
+^a		^	a
+a$		$	a
+^a		^n	aNb
+^b		^n	aNb	b
+a$		$n	bNa
+b$		$n	bNa	b
+a*(^b$)c*	-	b	b
+a*\(^b$\)c*	b	b	b
+
+# certain syntax errors and non-errors
+|		C	EMPTY
+|		b	|	|
+*		C	BADRPT
+*		b	*	*
++		C	BADRPT
+?		C	BADRPT
+""		&C	EMPTY
+()		-	abc	@abc
+\(\)		b	abc	@abc
+a||b		C	EMPTY
+|ab		C	EMPTY
+ab|		C	EMPTY
+(|a)b		C	EMPTY
+(a|)b		C	EMPTY
+(*a)		C	BADRPT
+(+a)		C	BADRPT
+(?a)		C	BADRPT
+({1}a)		C	BADRPT
+\(\{1\}a\)	bC	BADRPT
+(a|*b)		C	BADRPT
+(a|+b)		C	BADRPT
+(a|?b)		C	BADRPT
+(a|{1}b)	C	BADRPT
+^*		C	BADRPT
+^*		b	*	*
+^+		C	BADRPT
+^?		C	BADRPT
+^{1}		C	BADRPT
+^\{1\}		bC	BADRPT
+
+# metacharacters, backslashes
+a.c		&	abc	abc
+a[bc]d		&	abd	abd
+a\*c		&	a*c	a*c
+a\\b		&	a\b	a\b
+a\\\*b		&	a\*b	a\*b
+# The following test is wrong.  Using \b in an BRE or ERE is undefined.
+# a\bc		&	abc	abc
+a\		&C	EESCAPE
+a\\bc		&	a\bc	a\bc
+\{		bC	BADRPT
+a\[b		&	a[b	a[b
+a[b		&C	EBRACK
+# trailing $ is a peculiar special case for the BRE code
+a$		&	a	a
+a$		&	a$
+a\$		&	a
+a\$		&	a$	a$
+a\\$		&	a
+a\\$		&	a$
+a\\$		&	a\$
+a\\$		&	a\	a\
+
+# back references, ugh
+a\(b\)\2c	bC	ESUBREG
+a\(b\1\)c	bC	ESUBREG
+a\(b*\)c\1d	b	abbcbbd	abbcbbd	bb
+a\(b*\)c\1d	b	abbcbd
+a\(b*\)c\1d	b	abbcbbbd
+^\(.\)\1	b	abc
+a\([bc]\)\1d	b	abcdabbd	abbd	b
+a\(\([bc]\)\2\)*d	b	abbccd	abbccd
+a\(\([bc]\)\2\)*d	b	abbcbd
+# actually, this next one probably ought to fail, but the spec is unclear
+a\(\(b\)*\2\)*d		b	abbbd	abbbd
+# here is a case that no NFA implementation does right
+\(ab*\)[ab]*\1	b	ababaaa	ababaaa	a
+# check out normal matching in the presence of back refs
+\(a\)\1bcd	b	aabcd	aabcd
+\(a\)\1bc*d	b	aabcd	aabcd
+\(a\)\1bc*d	b	aabd	aabd
+\(a\)\1bc*d	b	aabcccd	aabcccd
+\(a\)\1bc*[ce]d	b	aabcccd	aabcccd
+^\(a\)\1b\(c\)*cd$	b	aabcccd	aabcccd
+
+# ordinary repetitions
+ab*c		&	abc	abc
+ab+c		-	abc	abc
+ab?c		-	abc	abc
+a\(*\)b		b	a*b	a*b
+a\(**\)b	b	ab	ab
+a\(***\)b	bC	BADRPT
+*a		b	*a	*a
+**a		b	a	a
+***a		bC	BADRPT
+
+# the dreaded bounded repetitions
+# The following two tests are not correct:
+#{		&	{	{
+#{abc		&	{abc	{abc
+# '{' is always a special char outside bracket expressions.  So test ony BRE:
+{		b	{	{
+{abc		b	{abc	{abc
+{1		C	BADRPT
+{1}		C	BADRPT
+# Same reason as for the two tests above:
+#a{b		&	a{b	a{b
+a{b		b	a{b	a{b
+a{1}b		-	ab	ab
+a\{1\}b		b	ab	ab
+a{1,}b		-	ab	ab
+a\{1,\}b	b	ab	ab
+a{1,2}b		-	aab	aab
+a\{1,2\}b	b	aab	aab
+a{1		C	EBRACE
+a\{1		bC	EBRACE
+a{1a		C	EBRACE
+a\{1a		bC	EBRACE
+a{1a}		C	BADBR
+a\{1a\}		bC	BADBR
+# These four tests checks for undefined behavior.  Our implementation does
+# something different.
+#a{,2}		-	a{,2}	a{,2}
+#a\{,2\}		bC	BADBR
+#a{,}		-	a{,}	a{,}
+#a\{,\}		bC	BADBR
+a{1,x}		C	BADBR
+a\{1,x\}	bC	BADBR
+a{1,x		C	EBRACE
+a\{1,x		bC	EBRACE
+# These two tests probably fails due to an arbitrary limit on the number of
+# repetitions in the other implementation.
+#a{300}		C	BADBR
+#a\{300\}	bC	BADBR
+a{1,0}		C	BADBR
+a\{1,0\}	bC	BADBR
+ab{0,0}c	-	abcac	ac
+ab\{0,0\}c	b	abcac	ac
+ab{0,1}c	-	abcac	abc
+ab\{0,1\}c	b	abcac	abc
+ab{0,3}c	-	abbcac	abbc
+ab\{0,3\}c	b	abbcac	abbc
+ab{1,1}c	-	acabc	abc
+ab\{1,1\}c	b	acabc	abc
+ab{1,3}c	-	acabc	abc
+ab\{1,3\}c	b	acabc	abc
+ab{2,2}c	-	abcabbc	abbc
+ab\{2,2\}c	b	abcabbc	abbc
+ab{2,4}c	-	abcabbc	abbc
+ab\{2,4\}c	b	abcabbc	abbc
+((a{1,10}){1,10}){1,10}	-	a	a	a,a
+
+# multiple repetitions
+# Wow, there is serious disconnect here.  The ERE grammar is like this:
+# ERE_expression : one_char_or_coll_elem_ERE
+#                | '^'
+#                | '$'
+#                | '(' extended_reg_exp ')'
+#                | ERE_expression ERE_dupl_symbol
+#                ;
+# where ERE_dupl_symbol is any of the repetition methods.  It is clear from
+# this that consecutive repetition is OK.  On top of this, the one test not
+# marked as failing must fail.  For BREs the situation is different, so we
+# use the four tests.
+#a**		&C	BADRPT
+a**		bC	BADRPT
+#a++		C	BADRPT
+#a??		C	BADRPT
+#a*+		C	BADRPT
+#a*?		C	BADRPT
+#a+*		C	BADRPT
+#a+?		C	BADRPT
+#a?*		C	BADRPT
+#a?+		C	BADRPT
+#a{1}{1}		C	BADRPT
+#a*{1}		C	BADRPT
+#a+{1}		C	BADRPT
+#a?{1}		C	BADRPT
+#a{1}*		C	BADRPT
+#a{1}+		C	BADRPT
+#a{1}?		C	BADRPT
+#a*{b}		-	a{b}	a{b}
+a\{1\}\{1\}	bC	BADRPT
+a*\{1\}		bC	BADRPT
+a\{1\}*		bC	BADRPT
+
+# brackets, and numerous perversions thereof
+a[b]c		&	abc	abc
+a[ab]c		&	abc	abc
+a[^ab]c		&	adc	adc
+a[]b]c		&	a]c	a]c
+a[[b]c		&	a[c	a[c
+a[-b]c		&	a-c	a-c
+a[^]b]c		&	adc	adc
+a[^-b]c		&	adc	adc
+a[b-]c		&	a-c	a-c
+a[b		&C	EBRACK
+a[]		&C	EBRACK
+a[1-3]c		&	a2c	a2c
+a[3-1]c		&C	ERANGE
+a[1-3-5]c	&C	ERANGE
+a[[.-.]--]c	&	a-c	a-c
+# I don't thing the error value should be ERANGE since a[1-] would be
+# valid, too.  Expect EBRACK.
+#a[1-		&C	ERANGE
+a[1-		&C	EBRACK
+a[[.		&C	EBRACK
+a[[.x		&C	EBRACK
+a[[.x.		&C	EBRACK
+a[[.x.]		&C	EBRACK
+a[[.x.]]	&	ax	ax
+a[[.x,.]]	&C	ECOLLATE
+# This test is invalid.  "one" is no collating symbol in any standardized
+# locale.
+# a[[.one.]]b	&	a1b	a1b
+a[[.notdef.]]b	&C	ECOLLATE
+a[[.].]]b	&	a]b	a]b
+a[[:alpha:]]c	&	abc	abc
+a[[:notdef:]]c	&C	ECTYPE
+a[[:		&C	EBRACK
+a[[:alpha	&C	EBRACK
+a[[:alpha:]	&C	EBRACK
+a[[:alpha,:]	&C	ECTYPE
+a[[:]:]]b	&C	ECTYPE
+a[[:-:]]b	&C	ECTYPE
+a[[:alph:]]	&C	ECTYPE
+a[[:alphabet:]]	&C	ECTYPE
+[[:alnum:]]+	-	-%@a0X-	a0X
+[[:alpha:]]+	-	-%@aX0-	aX
+[[:blank:]]+	-	aSSTb	SST
+[[:cntrl:]]+	-	aNTb	NT
+[[:digit:]]+	-	a019b	019
+[[:graph:]]+	-	Sa%bS	a%b
+[[:lower:]]+	-	AabC	ab
+[[:print:]]+	-	NaSbN	aSb
+[[:punct:]]+	-	S%-&T	%-&
+[[:space:]]+	-	aSNTb	SNT
+[[:upper:]]+	-	aBCd	BC
+[[:xdigit:]]+	-	p0f3Cq	0f3C
+a[[=b=]]c	&	abc	abc
+a[[=		&C	EBRACK
+a[[=b		&C	EBRACK
+a[[=b=		&C	EBRACK
+a[[=b=]		&C	EBRACK
+a[[=b,=]]	&C	ECOLLATE
+# This test is invalid.  "one" is no collating symbol in any standardized
+# locale.
+#a[[=one=]]b	&	a1b	a1b
+
+# complexities
+a(((b)))c	-	abc	abc
+a(b|(c))d	-	abd	abd
+a(b*|c)d	-	abbd	abbd
+# just gotta have one DFA-buster, of course
+a[ab]{20}	-	aaaaabaaaabaaaabaaaab	aaaaabaaaabaaaabaaaab
+# and an inline expansion in case somebody gets tricky
+a[ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab]	-	aaaaabaaaabaaaabaaaab	aaaaabaaaabaaaabaaaab
+# and in case somebody just slips in an NFA...
+a[ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab](wee|week)(knights|night)	-	aaaaabaaaabaaaabaaaabweeknights	aaaaabaaaabaaaabaaaabweeknights
+# fish for anomalies as the number of states passes 32
+12345678901234567890123456789	-	a12345678901234567890123456789b	12345678901234567890123456789
+123456789012345678901234567890	-	a123456789012345678901234567890b	123456789012345678901234567890
+1234567890123456789012345678901	-	a1234567890123456789012345678901b	1234567890123456789012345678901
+12345678901234567890123456789012	-	a12345678901234567890123456789012b	12345678901234567890123456789012
+123456789012345678901234567890123	-	a123456789012345678901234567890123b	123456789012345678901234567890123
+# and one really big one, beyond any plausible word width
+1234567890123456789012345678901234567890123456789012345678901234567890	-	a1234567890123456789012345678901234567890123456789012345678901234567890b	1234567890123456789012345678901234567890123456789012345678901234567890
+# fish for problems as brackets go past 8
+[ab][cd][ef][gh][ij][kl][mn]	-	xacegikmoq	acegikm
+[ab][cd][ef][gh][ij][kl][mn][op]	-	xacegikmoq	acegikmo
+[ab][cd][ef][gh][ij][kl][mn][op][qr]	-	xacegikmoqy	acegikmoq
+[ab][cd][ef][gh][ij][kl][mn][op][q]	-	xacegikmoqy	acegikmoq
+
+# subtleties of matching
+abc		&	xabcy	abc
+a\(b\)?c\1d	b	acd
+aBc		i	Abc	Abc
+a[Bc]*d		i	abBCcd	abBCcd
+0[[:upper:]]1	&i	0a1	0a1
+0[[:lower:]]1	&i	0A1	0A1
+a[^b]c		&i	abc
+a[^b]c		&i	aBc
+a[^b]c		&i	adc	adc
+[a]b[c]		-	abc	abc
+[a]b[a]		-	aba	aba
+[abc]b[abc]	-	abc	abc
+[abc]b[abd]	-	abd	abd
+a(b?c)+d	-	accd	accd
+(wee|week)(knights|night)	-	weeknights	weeknights
+(we|wee|week|frob)(knights|night|day)	-	weeknights	weeknights
+a[bc]d		-	xyzaaabcaababdacd	abd
+a[ab]c		-	aaabc	abc
+abc		s	abc	abc
+()		s	abc	@abc
+a*		&	b	@b
+
+# Let's have some fun -- try to match a C comment.
+# first the obvious, which looks okay at first glance...
+/\*.*\*/	-	/*x*/	/*x*/
+# but...
+/\*.*\*/	-	/*x*/y/*z*/	/*x*/y/*z*/
+# okay, we must not match */ inside; try to do that...
+/\*([^*]|\*[^/])*\*/	-	/*x*/	/*x*/
+/\*([^*]|\*[^/])*\*/	-	/*x*/y/*z*/	/*x*/
+# but...
+/\*([^*]|\*[^/])*\*/	-	/*x**/y/*z*/	/*x**/y/*z*/
+# and a still fancier version, which does it right (I think)...
+/\*([^*]|\*+[^*/])*\*+/	-	/*x*/	/*x*/
+/\*([^*]|\*+[^*/])*\*+/	-	/*x*/y/*z*/	/*x*/
+/\*([^*]|\*+[^*/])*\*+/	-	/*x**/y/*z*/	/*x**/
+/\*([^*]|\*+[^*/])*\*+/	-	/*x****/y/*z*/	/*x****/
+/\*([^*]|\*+[^*/])*\*+/	-	/*x**x*/y/*z*/	/*x**x*/
+/\*([^*]|\*+[^*/])*\*+/	-	/*x***x/y/*z*/	/*x***x/y/*z*/
+
+# subexpressions
+.*		-	abc	abc	-
+a(b)(c)d	-	abcd	abcd	b,c
+a(((b)))c	-	abc	abc	b,b,b
+a(b|(c))d	-	abd	abd	b,-
+a(b*|c|e)d	-	abbd	abbd	bb
+a(b*|c|e)d	-	acd	acd	c
+a(b*|c|e)d	-	ad	ad	@d
+a(b?)c		-	abc	abc	b
+a(b?)c		-	ac	ac	@c
+a(b+)c		-	abc	abc	b
+a(b+)c		-	abbbc	abbbc	bbb
+a(b*)c		-	ac	ac	@c
+(a|ab)(bc([de]+)f|cde)	-	abcdef	abcdef	a,bcdef,de
+# the regression tester only asks for 9 subexpressions
+a(b)(c)(d)(e)(f)(g)(h)(i)(j)k	-	abcdefghijk	abcdefghijk	b,c,d,e,f,g,h,i,j
+a(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)l	-	abcdefghijkl	abcdefghijkl	b,c,d,e,f,g,h,i,j,k
+a([bc]?)c	-	abc	abc	b
+a([bc]?)c	-	ac	ac	@c
+a([bc]+)c	-	abc	abc	b
+a([bc]+)c	-	abcc	abcc	bc
+a([bc]+)bc	-	abcbc	abcbc	bc
+a(bb+|b)b	-	abb	abb	b
+a(bbb+|bb+|b)b	-	abb	abb	b
+a(bbb+|bb+|b)b	-	abbb	abbb	bb
+a(bbb+|bb+|b)bb	-	abbb	abbb	b
+(.*).*		-	abcdef	abcdef	abcdef
+(a*)*		-	bc	@b	@b
+
+# do we get the right subexpression when it is used more than once?
+a(b|c)*d	-	ad	ad	-
+a(b|c)*d	-	abcd	abcd	c
+a(b|c)+d	-	abd	abd	b
+a(b|c)+d	-	abcd	abcd	c
+a(b|c?)+d	-	ad	ad	@d
+a(b|c?)+d	-	abcd	abcd	c
+a(b|c){0,0}d	-	ad	ad	-
+a(b|c){0,1}d	-	ad	ad	-
+a(b|c){0,1}d	-	abd	abd	b
+a(b|c){0,2}d	-	ad	ad	-
+a(b|c){0,2}d	-	abcd	abcd	c
+a(b|c){0,}d	-	ad	ad	-
+a(b|c){0,}d	-	abcd	abcd	c
+a(b|c){1,1}d	-	abd	abd	b
+a(b|c){1,1}d	-	acd	acd	c
+a(b|c){1,2}d	-	abd	abd	b
+a(b|c){1,2}d	-	abcd	abcd	c
+a(b|c){1,}d	-	abd	abd	b
+a(b|c){1,}d	-	abcd	abcd	c
+a(b|c){2,2}d	-	acbd	acbd	b
+a(b|c){2,2}d	-	abcd	abcd	c
+a(b|c){2,4}d	-	abcd	abcd	c
+a(b|c){2,4}d	-	abcbd	abcbd	b
+a(b|c){2,4}d	-	abcbcd	abcbcd	c
+a(b|c){2,}d	-	abcd	abcd	c
+a(b|c){2,}d	-	abcbd	abcbd	b
+a(b+|((c)*))+d	-	abd	abd	b,-,-
+a(b+|((c)*))+d	-	abcd	abcd	c,c,c
+
+# check out the STARTEND option
+[abc]		&#	a(b)c	b
+[abc]		&#	a(d)c
+[abc]		&#	a(bc)d	b
+[abc]		&#	a(dc)d	c
+.		&#	a()c
+b.*c		&#	b(bc)c	bc
+b.*		&#	b(bc)c	bc
+.*c		&#	b(bc)c	bc
+
+# plain strings, with the NOSPEC flag
+abc		m	abc	abc
+abc		m	xabcy	abc
+abc		m	xyz
+a*b		m	aba*b	a*b
+a*b		m	ab
+""		mC	EMPTY
+
+# cases involving NULs
+aZb		&	a	a
+aZb		&p	a
+aZb		&p#	(aZb)	aZb
+aZ*b		&p#	(ab)	ab
+a.b		&#	(aZb)	aZb
+a.*		&#	(aZb)c	aZb
+
+# word boundaries (ick)
+[[:<:]]a	&	a	a
+[[:<:]]a	&	ba
+[[:<:]]a	&	-a	a
+a[[:>:]]	&	a	a
+a[[:>:]]	&	ab
+a[[:>:]]	&	a-	a
+[[:<:]]a.c[[:>:]]	&	axcd-dayc-dazce-abc	abc
+[[:<:]]a.c[[:>:]]	&	axcd-dayc-dazce-abc-q	abc
+[[:<:]]a.c[[:>:]]	&	axc-dayc-dazce-abc	axc
+[[:<:]]b.c[[:>:]]	&	a_bxc-byc_d-bzc-q	bzc
+[[:<:]].x..[[:>:]]	&	y_xa_-_xb_y-_xc_-axdc	_xc_
+[[:<:]]a_b[[:>:]]	&	x_a_b
+
+# past problems, and suspected problems
+(A[1])|(A[2])|(A[3])|(A[4])|(A[5])|(A[6])|(A[7])|(A[8])|(A[9])|(A[A])	-	A1	A1
+abcdefghijklmnop	i	abcdefghijklmnop	abcdefghijklmnop
+abcdefghijklmnopqrstuv	i	abcdefghijklmnopqrstuv	abcdefghijklmnopqrstuv
+(ALAK)|(ALT[AB])|(CC[123]1)|(CM[123]1)|(GAMC)|(LC[23][EO ])|(SEM[1234])|(SL[ES][12])|(SLWW)|(SLF )|(SLDT)|(VWH[12])|(WH[34][EW])|(WP1[ESN])	-	CC11	CC11
+CC[13]1|a{21}[23][EO][123][Es][12]a{15}aa[34][EW]aaaaaaa[X]a	-	CC11	CC11
+Char \([a-z0-9_]*\)\[.*	b	Char xyz[k	Char xyz[k	xyz
+a?b	-	ab	ab
+-\{0,1\}[0-9]*$	b	-5	-5
+a*a*a*a*a*a*a*	&	aaaaaa	aaaaaa
+(\b){0}	-	x	@x	-
+\(\b\)\{0,0\}	b	abc	@abc	-
+a(\b){0}c	-	ac	ac	-
+a(.*)b(\1){0}c	-	abc	abc	@bc,-
+a(.*)b(\1){0}c	-	axbc	axbc	x,-
+
+a\(\(b*\)\)c\1d	b	abbcbbd	abbcbbd	bb,bb
+a\(\([bc]\)\)\2d	b	abcdabbd	abbd	b,b
+a\(\(\(\([bc]\)\)\3\)\)*d	b	abbccd	abbccd	cc,cc,c,c
+a(b)(c)d	-	abcd	abcd	b,c
+a(((b)))c	-	abc	abc	b,b,b
+a(((b|(((c))))))d	-	abd	abd	b,b,b,-,-,-
+a(((b*|c|e)))d	-	abbd	abbd	bb,bb,bb
+a((b|c)){0,0}d	-	ad	ad	-,-
+a((b|c)){0,1}d	-	abd	abd	b,b
+a((b|c)){0,2}d	-	abcd	abcd	c,c
+a((b+|((c)*)))+d	-	abd	abd	b,b,-,-
+a((b+|((c)*)))+d	-	abcd	abcd	c,c,c,c
+(((\b))){0}	-	x	@x	-,-,-
+a(((.*)))b((\2)){0}c	-	abc	abc	@bc,@bc,@bc,-,-
+a(((.*)))b((\1)){0}c	-	axbc	axbc	x,x,x,-,-
+
+\b	&	SaT	@aT
+\b	&	aT	@aT
+a.*\b	&	abT	ab
+\b	&	STSS
+\B	&	abc	@bc
+\B	&	aSbTc
+\B	&	SaT	@SaT
+\B	&	aSTSb	@TSb
diff --git a/src/sed/testsuite/allsub.good b/src/sed/testsuite/allsub.good
new file mode 100644
index 0000000..234e159
--- /dev/null
+++ b/src/sed/testsuite/allsub.good
@@ -0,0 +1 @@
+bar bar fo oo f oo bar bar bar bar bar bar bar bar bar bar bar bar bar
diff --git a/src/sed/testsuite/allsub.inp b/src/sed/testsuite/allsub.inp
new file mode 100644
index 0000000..f75655f
--- /dev/null
+++ b/src/sed/testsuite/allsub.inp
@@ -0,0 +1 @@
+foo foo fo oo f oo foo foo foo foo foo foo foo foo foo foo foo foo foo
diff --git a/src/sed/testsuite/allsub.sed b/src/sed/testsuite/allsub.sed
new file mode 100644
index 0000000..8aa29c1
--- /dev/null
+++ b/src/sed/testsuite/allsub.sed
@@ -0,0 +1 @@
+s/foo/bar/g
diff --git a/src/sed/testsuite/appquit.good b/src/sed/testsuite/appquit.good
new file mode 100644
index 0000000..0742c8e
--- /dev/null
+++ b/src/sed/testsuite/appquit.good
@@ -0,0 +1,2 @@
+doh
+ok
diff --git a/src/sed/testsuite/appquit.inp b/src/sed/testsuite/appquit.inp
new file mode 100644
index 0000000..a2300c9
--- /dev/null
+++ b/src/sed/testsuite/appquit.inp
@@ -0,0 +1 @@
+doh
diff --git a/src/sed/testsuite/appquit.sed b/src/sed/testsuite/appquit.sed
new file mode 100644
index 0000000..fc11774
--- /dev/null
+++ b/src/sed/testsuite/appquit.sed
@@ -0,0 +1,4 @@
+# Test appending quit
+a\
+ok
+q
diff --git a/src/sed/testsuite/binary.good b/src/sed/testsuite/binary.good
new file mode 100644
index 0000000..788024d
--- /dev/null
+++ b/src/sed/testsuite/binary.good
@@ -0,0 +1,8 @@
+192
+168
+1
+0
+192
+168
+1
+255
diff --git a/src/sed/testsuite/binary.inp b/src/sed/testsuite/binary.inp
new file mode 100644
index 0000000..06bf77c
--- /dev/null
+++ b/src/sed/testsuite/binary.inp
@@ -0,0 +1,4 @@
+192.168.1.2 br b8<r b16<r b24< R|R|R| D
+255.255.255.0 br b8<r b16<r b24< R|R|R| D~r
+& DDD 24>dpP 16>11111111& dpP 8>11111111& dpP 11111111& dpP
+| DDD 24>dpP 16>11111111& dpP 8>11111111& dpP 11111111& dpP
diff --git a/src/sed/testsuite/binary.sed b/src/sed/testsuite/binary.sed
new file mode 100644
index 0000000..92a6a06
--- /dev/null
+++ b/src/sed/testsuite/binary.sed
@@ -0,0 +1,189 @@
+# A kind of clone of dc geared towards binary operations.
+# by Paolo Bonzini
+#
+# commands available:
+#   conversion commands
+#     b      convert decimal to binary
+#     d      convert binary to decimal
+#
+#   arithmetic commands
+#     <      shift left binary by decimal number of bits (11 3< gives 11000)
+#     >      shift right binary by decimal number of bits (1011 2> gives 10)
+#     &      binary AND (between two binary operands)
+#     |      binary OR (between two binary operands)
+#     ^      binary XOR (between two binary operands)
+#     ~      binary NOT (between one binary operand)
+#
+#   stack manipulation commands
+#     c      clear stack
+#     P      pop stack top
+#     D      duplicate stack top
+#     x      exchange top two elements
+#     r      rotate stack counter-clockwise (second element becomes first)
+#     R      rotate stack clockwise (last element becomes first)
+#
+#   other commands
+#     l      print stack (stack top is first)
+#     p      print stack top
+#     q      quit, print stack top if any (cq is quiet quit)
+#
+# The only shortcoming is that you'd better not attempt conversions of
+# values above 1000 or so.
+#
+# This version does everything in pattern space (a la dc.sed).
+# --------------------------------------------------------------------------
+# This was actually used in a one-disk distribution of Linux to compute
+# netmasks as follows (1 parameter => compute netmask e.g. 24 becomes
+# 255.255.255.0; 2 parameters => given host address and netmask compute
+# network and broadcast addresses):
+#
+# if [ $# = 1 ]; then 
+#   OUTPUT='$1.$2.$3.$4'
+#   set 255.255.255.255 $1
+# else
+#   OUTPUT='$1.$2.$3.$4 $5.$6.$7.$8'
+# fi
+# 
+# if [ `expr $2 : ".*\\."` -gt 0 ]; then
+#   MASK="$2 br b8<r b16<r b24< R|R|R|"
+# else
+#   MASK="$2b 31b ^d D
+#         11111111111111111111111111111111 x>1> x<1<"
+# fi
+# 
+# set `echo "$1 br b8<r b16<r b24< R|R|R| D    # Load address
+#            $MASK D ~r                        # Load mask
+# 
+#            & DDD 24>dpP 16>11111111& dpP 8>11111111& dpP 11111111& dpP
+#            | DDD 24>dpP 16>11111111& dpP 8>11111111& dpP 11111111& dpP
+#       " | sed -f binary.sed`
+#
+# eval echo $OUTPUT
+# --------------------------------------------------------------------------
+
+
+1s/^/%%/
+
+:cmd
+s/\(.*%%\) *\([0-9][0-9]*\)/\2\
+\1/
+tcmd
+s/%% *#.*/%%/
+/%%$/ {
+  $b quit
+  N
+}
+
+/^.*%%D/ s/^[^\n]*\n/&&/
+/^.*%%P/ s/^[^\n]*\n//
+/^.*%%x/ s/^\([^\n]*\n\)\([^\n]*\n\)/\2\1/
+/^.*%%r/ s/^\([^\n]*\n\)\([^%]*\)/\2\1/
+/^.*%%R/ s/^\([^%]*\n\)\([^\n]*\n\)/\2\1/
+/^.*%%c/ s/^.*%%/%%/
+/^.*%%p/ P
+
+/^.*%%l/ {
+  h
+  s/.%%.*//
+  p
+  g
+}
+
+/^.*%%q/ {
+  :quit
+  /^%%/!P
+  d
+}
+
+/^.*%%b/ {
+  # Decimal to binary via analog form
+  s/^\([^\n]*\)/-&;9876543210aaaaaaaaa/
+  :d2bloop1
+  s/\(a*\)-\(.\)\([^;]*;[0-9]*\2.\{9\}\(a*\)\)/\1\1\1\1\1\1\1\1\1\1\4-\3/
+  t d2bloop1
+  s/-;9876543210aaaaaaaaa/;a01!/
+  :d2bloop2
+  s/\(a*\)\1\(a\{0,1\}\)\(;\2.\(.\)[^!]*!\)/\1\3\4/
+  /^a/b d2bloop2
+  s/[^!]*!//
+}
+
+/^.*%%d/ {
+  # Binary to decimal via analog form
+  s/^\([^\n]*\)/-&;10a/
+  :b2dloop1
+  s/\(a*\)-\(.\)\([^;]*;[0-9]*\2.\(a*\)\)/\1\1\4-\3/
+  t b2dloop1
+  s/-;10a/;aaaaaaaaa0123456789!/
+  :b2dloop2
+  s/\(a*\)\1\1\1\1\1\1\1\1\1\(a\{0,9\}\)\(;\2.\{9\}\(.\)[^!]*!\)/\1\3\4/
+  /^a/b b2dloop2
+  s/[^!]*!//
+}
+
+/^.*%%&/ {
+  # Binary AND
+  s/\([^\n]*\)\n\([^\n]*\)/-\1-\2-111 01000/
+  :andloop
+  s/\([^-]*\)-\([^-]*\)\([^-]\)-\([^-]*\)\([^-]\)-\([01 ]*\3\5\([01]\)\)/\7\1-\2-\4-\6/
+  t andloop
+  s/^0*\([^-]*\)-[^\n]*/\1/
+  s/^\n/0&/
+}
+
+/^.*%%^/ {
+  # Binary XOR
+  s/\([^\n]*\)\n\([^\n]*\)/-\1-\2-000 01101/
+  b orloop
+}
+
+/^.*%%|/ {
+  # Binary OR
+  s/\([^\n]*\)\n\([^\n]*\)/-\1-\2-000 10111/
+  :orloop
+  s/\([^-]*\)-\([^-]*\)\([^-]\)-\([^-]*\)\([^-]\)-\([01 ]*\3\5\([01]\)\)/\7\1-\2-\4-\6/
+  t orloop
+  s/\([^-]*\)-\([^-]*\)-\([^-]*\)-[^\n]*/\2\3\1/
+}
+
+/^.*%%~/ {
+  # Binary NOT
+  s/^\(.\)\([^\n]*\n\)/\1-010-\2/
+  :notloop
+  s/\(.\)-0\{0,1\}\1\(.\)0\{0,1\}-\([01\n]\)/\2\3-010-/
+  t notloop
+
+  # If result is 00001..., \3 does not match (it looks for -10) and we just
+  # remove the table and leading zeros.  If result is 0000...0, \3 matches
+  # (it looks for -0), \4 is a zero and we leave a lone zero as top of the
+  # stack.
+
+  s/0*\(1\{0,1\}\)\([^-]*\)-\(\1\(0\)\)\{0,1\}[^-]*-/\4\1\2/
+}
+
+/^.*%%</ {
+  # Left shift, convert to analog and add a binary digit for each analog digit
+  s/^\([^\n]*\)/-&;9876543210aaaaaaaaa/
+  :lshloop1
+  s/\(a*\)-\(.\)\([^;]*;[0-9]*\2.\{9\}\(a*\)\)/\1\1\1\1\1\1\1\1\1\1\4-\3/
+  t lshloop1
+  s/^\(a*\)-;9876543210aaaaaaaaa\n\([^\n]*\)/\2\1/
+  s/a/0/g
+}
+
+/^.*%%>/ {
+  # Right shift, convert to analog and remove a binary digit for each analog digit
+  s/^\([^\n]*\)/-&;9876543210aaaaaaaaa/
+  :rshloop1
+  s/\(a*\)-\(.\)\([^;]*;[0-9]*\2.\{9\}\(a*\)\)/\1\1\1\1\1\1\1\1\1\1\4-\3/
+  t rshloop1
+  s/^\(a*\)-;9876543210aaaaaaaaa\n\([^\n]*\)/\2\1/
+  :rshloop2
+  s/.a//
+  s/^aa*/0/
+  /a\n/b rshloop2
+}
+
+
+s/%%./%%/
+tcmd
diff --git a/src/sed/testsuite/binary2.sed b/src/sed/testsuite/binary2.sed
new file mode 100644
index 0000000..daf7706
--- /dev/null
+++ b/src/sed/testsuite/binary2.sed
@@ -0,0 +1,226 @@
+# A kind of clone of dc geared towards binary operations.
+# by Paolo Bonzini
+#
+# commands available:
+#   conversion commands
+#     b      convert decimal to binary
+#     d      convert binary to decimal
+#
+#   arithmetic commands
+#     <      shift left binary by decimal number of bits (11 3< gives 11000)
+#     >      shift right binary by decimal number of bits (1011 2> gives 10)
+#     &      binary AND (between two binary operands)
+#     |      binary OR (between two binary operands)
+#     ^      binary XOR (between two binary operands)
+#     ~      binary NOT (between one binary operand)
+#
+#   stack manipulation commands
+#     c      clear stack
+#     P      pop stack top
+#     D      duplicate stack top
+#     x      exchange top two elements
+#     r      rotate stack counter-clockwise (second element becomes first)
+#     R      rotate stack clockwise (last element becomes first)
+#
+#   other commands
+#     l      print stack (stack top is first)
+#     p      print stack top
+#     q      quit, print stack top if any (cq is quiet quit)
+#
+# The only shortcoming is that you'd better not attempt conversions of
+# values above 1000 or so.
+#
+# This version keeps the stack in hold space and the command in pattern
+# space; it is the fastest one (though the gap with binary3.sed is small).
+# --------------------------------------------------------------------------
+# This was actually used in a one-disk distribution of Linux to compute
+# netmasks as follows (1 parameter => compute netmask e.g. 24 becomes
+# 255.255.255.0; 2 parameters => given host address and netmask compute
+# network and broadcast addresses):
+#
+# if [ $# = 1 ]; then 
+#   OUTPUT='$1.$2.$3.$4'
+#   set 255.255.255.255 $1
+# else
+#   OUTPUT='$1.$2.$3.$4 $5.$6.$7.$8'
+# fi
+# 
+# if [ `expr $2 : ".*\\."` -gt 0 ]; then
+#   MASK="$2 br b8<r b16<r b24< R|R|R|"
+# else
+#   MASK="$2b 31b ^d D
+#         11111111111111111111111111111111 x>1> x<1<"
+# fi
+# 
+# set `echo "$1 br b8<r b16<r b24< R|R|R| D    # Load address
+#            $MASK D ~r                        # Load mask
+# 
+#            & DDD 24>dpP 16>11111111& dpP 8>11111111& dpP 11111111& dpP
+#            | DDD 24>dpP 16>11111111& dpP 8>11111111& dpP 11111111& dpP
+#       " | sed -f binary.sed`
+#
+# eval echo $OUTPUT
+# --------------------------------------------------------------------------
+
+:cmd
+s/^[\n\t ]*//
+s/^#.*//
+/^$/ {
+  $b quit
+  N
+  t cmd
+}
+/^[0-9][0-9]*/ {
+  G
+  h
+  s/^[0-9][0-9]* *\([^\n]*\).*/\1/
+  x
+  s/^\([0-9][0-9]*\)[^\n]*/\1/
+  x
+  t cmd
+}
+
+/^[^DPxrRcplqbd&|^~<>]/b bad
+
+/^D/ {
+  x
+  s/^[^\n]*\n/&&/
+}
+/^P/ {
+  x
+  s/^[^\n]*\n//
+}
+/^x/ {
+  x
+  s/^\([^\n]*\n\)\([^\n]*\n\)/\2\1/
+}
+/^r/ {
+  x
+  s/^\([^\n]*\n\)\(.*\)/\2\1/
+}
+/^R/ {
+  x
+  s/^\(.*\n\)\([^\n]*\n\)/\2\1/
+}
+/^c/ {
+  x
+  s/.*//
+}
+/^p/ {
+  x
+  P
+}
+
+/^l/ {
+  x
+  p
+}
+
+/^q/ {
+  :quit
+  x
+  /./P
+  d
+}
+
+/^b/ {
+  # Decimal to binary via analog form
+  x
+  s/^\([^\n]*\)/-&;9876543210aaaaaaaaa/
+  :d2bloop1
+  s/\(a*\)-\(.\)\([^;]*;[0-9]*\2.\{9\}\(a*\)\)/\1\1\1\1\1\1\1\1\1\1\4-\3/
+  t d2bloop1
+  s/-;9876543210aaaaaaaaa/;a01!/
+  :d2bloop2
+  s/\(a*\)\1\(a\{0,1\}\)\(;\2.\(.\)[^!]*!\)/\1\3\4/
+  /^a/b d2bloop2
+  s/[^!]*!//
+}
+
+/^d/ {
+  # Binary to decimal via analog form
+  x
+  s/^\([^\n]*\)/-&;10a/
+  :b2dloop1
+  s/\(a*\)-\(.\)\([^;]*;[0-9]*\2.\(a*\)\)/\1\1\4-\3/
+  t b2dloop1
+  s/-;10a/;aaaaaaaaa0123456789!/
+  :b2dloop2
+  s/\(a*\)\1\1\1\1\1\1\1\1\1\(a\{0,9\}\)\(;\2.\{9\}\(.\)[^!]*!\)/\1\3\4/
+  /^a/b b2dloop2
+  s/[^!]*!//
+}
+
+/^&/ {
+  # Binary AND
+  x
+  s/\([^\n]*\)\n\([^\n]*\)/-\1-\2-111 01000/
+  :andloop
+  s/\([^-]*\)-\([^-]*\)\([^-]\)-\([^-]*\)\([^-]\)-\([01 ]*\3\5\([01]\)\)/\7\1-\2-\4-\6/
+  t andloop
+  s/^0*\([^-]*\)-[^\n]*/\1/
+  s/^\n/0&/
+}
+
+/^\^/ {
+  # Binary XOR
+  x
+  s/\([^\n]*\)\n\([^\n]*\)/-\1-\2-000 01101/
+  b orloop
+}
+
+/^|/ {
+  # Binary OR
+  x
+  s/\([^\n]*\)\n\([^\n]*\)/-\1-\2-000 10111/
+  :orloop
+  s/\([^-]*\)-\([^-]*\)\([^-]\)-\([^-]*\)\([^-]\)-\([01 ]*\3\5\([01]\)\)/\7\1-\2-\4-\6/
+  t orloop
+  s/\([^-]*\)-\([^-]*\)-\([^-]*\)-[^\n]*/\2\3\1/
+}
+
+/^~/ {
+  # Binary NOT
+  x
+  s/^\(.\)\([^\n]*\n\)/\1-010-\2/
+  :notloop
+  s/\(.\)-0\{0,1\}\1\(.\)0\{0,1\}-\([01\n]\)/\2\3-010-/
+  t notloop
+
+  # If result is 00001..., \3 does not match (it looks for -10) and we just
+  # remove the table and leading zeros.  If result is 0000...0, \3 matches
+  # (it looks for -0), \4 is a zero and we leave a lone zero as top of the
+  # stack.
+
+  s/0*\(1\{0,1\}\)\([^-]*\)-\(\1\(0\)\)\{0,1\}[^-]*-/\4\1\2/
+}
+
+/^</ {
+  # Left shift, convert to analog and add a binary digit for each analog digit
+  x
+  s/^\([^\n]*\)/-&;9876543210aaaaaaaaa/
+  :lshloop1
+  s/\(a*\)-\(.\)\([^;]*;[0-9]*\2.\{9\}\(a*\)\)/\1\1\1\1\1\1\1\1\1\1\4-\3/
+  t lshloop1
+  s/^\(a*\)-;9876543210aaaaaaaaa\n\([^\n]*\)/\2\1/
+  s/a/0/g
+}
+
+/^>/ {
+  # Right shift, convert to analog and remove a binary digit for each analog digit
+  x
+  s/^\([^\n]*\)/-&;9876543210aaaaaaaaa/
+  :rshloop1
+  s/\(a*\)-\(.\)\([^;]*;[0-9]*\2.\{9\}\(a*\)\)/\1\1\1\1\1\1\1\1\1\1\4-\3/
+  t rshloop1
+  s/^\(a*\)-;9876543210aaaaaaaaa\n\([^\n]*\)/\2\1/
+  :rshloop2
+  s/.a//
+  s/^aa*/0/
+  /a\n/b rshloop2
+}
+
+x
+:bad
+s/^.//
+tcmd
diff --git a/src/sed/testsuite/binary3.sed b/src/sed/testsuite/binary3.sed
new file mode 100644
index 0000000..b877f14
--- /dev/null
+++ b/src/sed/testsuite/binary3.sed
@@ -0,0 +1,204 @@
+# A kind of clone of dc geared towards binary operations.
+# by Paolo Bonzini
+#
+# commands available:
+#   conversion commands
+#     b      convert decimal to binary
+#     d      convert binary to decimal
+#
+#   arithmetic commands
+#     <      shift left binary by decimal number of bits (11 3< gives 11000)
+#     >      shift right binary by decimal number of bits (1011 2> gives 10)
+#     &      binary AND (between two binary operands)
+#     |      binary OR (between two binary operands)
+#     ^      binary XOR (between two binary operands)
+#     ~      binary NOT (between one binary operand)
+#
+#   stack manipulation commands
+#     c      clear stack
+#     P      pop stack top
+#     D      duplicate stack top
+#     x      exchange top two elements
+#     r      rotate stack counter-clockwise (second element becomes first)
+#     R      rotate stack clockwise (last element becomes first)
+#
+#   other commands
+#     l      print stack (stack top is first)
+#     p      print stack top
+#     q      quit, print stack top if any (cq is quiet quit)
+#
+# The only shortcoming is that you'd better not attempt conversions of
+# values above 1000 or so.
+#
+# This version keeps the stack and the current command in hold space and
+# the commands in pattern space; it is just a bit slower than binary2.sed
+# but more size optimized for broken seds which have a 199-command limit
+# (though binary2.sed does not have this much).
+#
+# --------------------------------------------------------------------------
+# This was actually used in a one-disk distribution of Linux to compute
+# netmasks as follows (1 parameter => compute netmask e.g. 24 becomes
+# 255.255.255.0; 2 parameters => given host address and netmask compute
+# network and broadcast addresses):
+#
+# if [ $# = 1 ]; then 
+#   OUTPUT='$1.$2.$3.$4'
+#   set 255.255.255.255 $1
+# else
+#   OUTPUT='$1.$2.$3.$4 $5.$6.$7.$8'
+# fi
+# 
+# if [ `expr $2 : ".*\\."` -gt 0 ]; then
+#   MASK="$2 br b8<r b16<r b24< R|R|R|"
+# else
+#   MASK="$2b 31b ^d D
+#         11111111111111111111111111111111 x>1> x<1<"
+# fi
+# 
+# set `echo "$1 br b8<r b16<r b24< R|R|R| D    # Load address
+#            $MASK D ~r                        # Load mask
+# 
+#            & DDD 24>dpP 16>11111111& dpP 8>11111111& dpP 11111111& dpP
+#            | DDD 24>dpP 16>11111111& dpP 8>11111111& dpP 11111111& dpP
+#       " | sed -f binary.sed`
+#
+# eval echo $OUTPUT
+# --------------------------------------------------------------------------
+
+:cmd
+s/^[\n\t ]*//
+s/^#.*//
+/^$/ {
+  $b quit
+  N
+  t cmd
+}
+/^[0-9][0-9]*/ {
+  G
+  h
+  s/^[0-9][0-9]* *\([^\n]*\).*/\1/
+  x
+  s/^\([0-9][0-9]*\)[^\n]*/\1/
+  x
+  t cmd
+}
+
+/^[^DPxrRcplqbd&|^~<>]/bbad
+
+H
+x
+s/\(\n[^\n]\)[^\n]*$/\1/
+
+/D$/ s/^[^\n]*\n/&&/
+/P$/ s/^[^\n]*\n//
+/x$/ s/^\([^\n]*\n\)\([^\n]*\n\)/\2\1/
+/r$/ s/^\([^\n]*\n\)\(.*\)\(..\)/\2\1\3/
+/R$/ s/^\(.*\n\)\([^\n]*\n\)\(..\)/\2\1\3/
+/c$/ s/.*//
+/p$/ P
+/l$/ {
+  s/...$//
+  p
+  t cmd
+}
+
+/q$/ {
+  :quit
+  /.../P
+  d
+}
+
+/b$/ {
+  # Decimal to binary via analog form
+  s/^\([^\n]*\)/-&;9876543210aaaaaaaaa/
+  :d2bloop1
+  s/\(a*\)-\(.\)\([^;]*;[0-9]*\2.\{9\}\(a*\)\)/\1\1\1\1\1\1\1\1\1\1\4-\3/
+  t d2bloop1
+  s/-;9876543210aaaaaaaaa/;a01!/
+  :d2bloop2
+  s/\(a*\)\1\(a\{0,1\}\)\(;\2.\(.\)[^!]*!\)/\1\3\4/
+  /^a/b d2bloop2
+  s/[^!]*!//
+}
+
+/d$/ {
+  # Binary to decimal via analog form
+  s/^\([^\n]*\)/-&;10a/
+  :b2dloop1
+  s/\(a*\)-\(.\)\([^;]*;[0-9]*\2.\(a*\)\)/\1\1\4-\3/
+  t b2dloop1
+  s/-;10a/;aaaaaaaaa0123456789!/
+  :b2dloop2
+  s/\(a*\)\1\1\1\1\1\1\1\1\1\(a\{0,9\}\)\(;\2.\{9\}\(.\)[^!]*!\)/\1\3\4/
+  /^a/b b2dloop2
+  s/[^!]*!//
+}
+
+/&$/ {
+  # Binary AND
+  s/\([^\n]*\)\n\([^\n]*\)/-\1-\2-111 01000/
+  :andloop
+  s/\([^-]*\)-\([^-]*\)\([^-]\)-\([^-]*\)\([^-]\)-\([01 ]*\3\5\([01]\)\)/\7\1-\2-\4-\6/
+  t andloop
+  s/^0*\([^-]*\)-[^\n]*/\1/
+  s/^\n/0&/
+}
+
+/\^$/ {
+  # Binary XOR
+  s/\([^\n]*\)\n\([^\n]*\)/-\1-\2-000 01101/
+  b orloop
+}
+
+/|$/ {
+  # Binary OR
+  s/\([^\n]*\)\n\([^\n]*\)/-\1-\2-000 10111/
+  :orloop
+  s/\([^-]*\)-\([^-]*\)\([^-]\)-\([^-]*\)\([^-]\)-\([01 ]*\3\5\([01]\)\)/\7\1-\2-\4-\6/
+  t orloop
+  s/\([^-]*\)-\([^-]*\)-\([^-]*\)-[^\n]*/\2\3\1/
+}
+
+/~$/ {
+  # Binary NOT
+  s/^\(.\)\([^\n]*\n\)/\1-010-\2/
+  :notloop
+  s/\(.\)-0\{0,1\}\1\(.\)0\{0,1\}-\([01\n]\)/\2\3-010-/
+  t notloop
+
+  # If result is 00001..., \3 does not match (it looks for -10) and we just
+  # remove the table and leading zeros.  If result is 0000...0, \3 matches
+  # (it looks for -0), \4 is a zero and we leave a lone zero as top of the
+  # stack.
+
+  s/0*\(1\{0,1\}\)\([^-]*\)-\(\1\(0\)\)\{0,1\}[^-]*-/\4\1\2/
+}
+
+/<$/ {
+  # Left shift, convert to analog and add a binary digit for each analog digit
+  s/^\([^\n]*\)/-&;9876543210aaaaaaaaa/
+  :lshloop1
+  s/\(a*\)-\(.\)\([^;]*;[0-9]*\2.\{9\}\(a*\)\)/\1\1\1\1\1\1\1\1\1\1\4-\3/
+  t lshloop1
+  s/^\(a*\)-;9876543210aaaaaaaaa\n\([^\n]*\)/\2\1/
+  s/a/0/g
+}
+
+/>$/ {
+  # Right shift, convert to analog and remove a binary digit for each analog digit
+  s/^\([^\n]*\)/-&;9876543210aaaaaaaaa/
+  :rshloop1
+  s/\(a*\)-\(.\)\([^;]*;[0-9]*\2.\{9\}\(a*\)\)/\1\1\1\1\1\1\1\1\1\1\4-\3/
+  t rshloop1
+  s/^\(a*\)-;9876543210aaaaaaaaa\n\([^\n]*\)/\2\1/
+  :rshloop2
+  s/.a//
+  s/^aa*/0/
+  /a\n/b rshloop2
+}
+
+s/..$//
+x
+:bad
+s/^.//
+tcmd
diff --git a/src/sed/testsuite/bkslashes.good b/src/sed/testsuite/bkslashes.good
new file mode 100644
index 0000000..770d1e6
--- /dev/null
+++ b/src/sed/testsuite/bkslashes.good
@@ -0,0 +1,2 @@
+a\
+
diff --git a/src/sed/testsuite/bkslashes.inp b/src/sed/testsuite/bkslashes.inp
new file mode 100644
index 0000000..7898192
--- /dev/null
+++ b/src/sed/testsuite/bkslashes.inp
@@ -0,0 +1 @@
+a
diff --git a/src/sed/testsuite/bkslashes.sed b/src/sed/testsuite/bkslashes.sed
new file mode 100644
index 0000000..aa8c66c
--- /dev/null
+++ b/src/sed/testsuite/bkslashes.sed
@@ -0,0 +1,3 @@
+# bug in sed 4.0b
+s/$/\\\
+/
diff --git a/src/sed/testsuite/bsd.good b/src/sed/testsuite/bsd.good
new file mode 100644
index 0000000..0e21b0f
--- /dev/null
+++ b/src/sed/testsuite/bsd.good
@@ -0,0 +1,1737 @@
+============
+Test 1.1:101
+============
+Testing argument parsing
+First type
+e1_l1_1
+e1_l1_1
+e1_l1_2
+e1_l1_2
+e1_l1_3
+e1_l1_3
+e1_l1_4
+e1_l1_4
+e1_l1_5
+e1_l1_5
+e1_l1_6
+e1_l1_6
+e1_l1_7
+e1_l1_7
+e1_l1_8
+e1_l1_8
+e1_l1_9
+e1_l1_9
+e1_l1_10
+e1_l1_10
+e1_l1_11
+e1_l1_11
+e1_l1_12
+e1_l1_12
+e1_l1_13
+e1_l1_13
+e1_l1_14
+e1_l1_14
+
+============
+Test 1.2:102
+============
+e1_l1_1
+e1_l1_2
+e1_l1_3
+e1_l1_4
+e1_l1_5
+e1_l1_6
+e1_l1_7
+e1_l1_8
+e1_l1_9
+e1_l1_10
+e1_l1_11
+e1_l1_12
+e1_l1_13
+e1_l1_14
+
+============
+Test 1.3:103
+============
+e1_l1_1
+e1_l1_1
+e1_l1_2
+e1_l1_2
+e1_l1_3
+e1_l1_3
+e1_l1_4
+e1_l1_4
+e1_l1_5
+e1_l1_5
+e1_l1_6
+e1_l1_6
+e1_l1_7
+e1_l1_7
+e1_l1_8
+e1_l1_8
+e1_l1_9
+e1_l1_9
+e1_l1_10
+e1_l1_10
+e1_l1_11
+e1_l1_11
+e1_l1_12
+e1_l1_12
+e1_l1_13
+e1_l1_13
+e1_l1_14
+e1_l1_14
+
+============
+Test 1.4:104
+============
+e1_l1_1
+e1_l1_2
+e1_l1_3
+e1_l1_4
+e1_l1_5
+e1_l1_6
+e1_l1_7
+e1_l1_8
+e1_l1_9
+e1_l1_10
+e1_l1_11
+e1_l1_12
+e1_l1_13
+e1_l1_14
+Second type
+
+==============
+Test 1.4.1:105
+==============
+l1_1
+l1_2
+l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+
+============
+Test 1.5:106
+============
+s1_l1_1
+s1_l1_1
+s1_l1_2
+s1_l1_2
+s1_l1_3
+s1_l1_3
+s1_l1_4
+s1_l1_4
+s1_l1_5
+s1_l1_5
+s1_l1_6
+s1_l1_6
+s1_l1_7
+s1_l1_7
+s1_l1_8
+s1_l1_8
+s1_l1_9
+s1_l1_9
+s1_l1_10
+s1_l1_10
+s1_l1_11
+s1_l1_11
+s1_l1_12
+s1_l1_12
+s1_l1_13
+s1_l1_13
+s1_l1_14
+s1_l1_14
+
+============
+Test 1.6:107
+============
+s1_l1_1
+s1_l1_1
+s1_l1_2
+s1_l1_2
+s1_l1_3
+s1_l1_3
+s1_l1_4
+s1_l1_4
+s1_l1_5
+s1_l1_5
+s1_l1_6
+s1_l1_6
+s1_l1_7
+s1_l1_7
+s1_l1_8
+s1_l1_8
+s1_l1_9
+s1_l1_9
+s1_l1_10
+s1_l1_10
+s1_l1_11
+s1_l1_11
+s1_l1_12
+s1_l1_12
+s1_l1_13
+s1_l1_13
+s1_l1_14
+s1_l1_14
+
+============
+Test 1.7:108
+============
+e1_l1_1
+e1_l1_1
+e1_l1_2
+e1_l1_2
+e1_l1_3
+e1_l1_3
+e1_l1_4
+e1_l1_4
+e1_l1_5
+e1_l1_5
+e1_l1_6
+e1_l1_6
+e1_l1_7
+e1_l1_7
+e1_l1_8
+e1_l1_8
+e1_l1_9
+e1_l1_9
+e1_l1_10
+e1_l1_10
+e1_l1_11
+e1_l1_11
+e1_l1_12
+e1_l1_12
+e1_l1_13
+e1_l1_13
+e1_l1_14
+e1_l1_14
+
+============
+Test 1.8:109
+============
+e1_l1_1
+e1_l1_1
+e1_l1_2
+e1_l1_2
+e1_l1_3
+e1_l1_3
+e1_l1_4
+e1_l1_4
+e1_l1_5
+e1_l1_5
+e1_l1_6
+e1_l1_6
+e1_l1_7
+e1_l1_7
+e1_l1_8
+e1_l1_8
+e1_l1_9
+e1_l1_9
+e1_l1_10
+e1_l1_10
+e1_l1_11
+e1_l1_11
+e1_l1_12
+e1_l1_12
+e1_l1_13
+e1_l1_13
+e1_l1_14
+e1_l1_14
+
+============
+Test 1.9:110
+============
+s1_l1_1
+s1_l1_2
+s1_l1_3
+s1_l1_4
+s1_l1_5
+s1_l1_6
+s1_l1_7
+s1_l1_8
+s1_l1_9
+s1_l1_10
+s1_l1_11
+s1_l1_12
+s1_l1_13
+s1_l1_14
+
+=============
+Test 1.10:111
+=============
+s1_l1_1
+s1_l1_2
+s1_l1_3
+s1_l1_4
+s1_l1_5
+s1_l1_6
+s1_l1_7
+s1_l1_8
+s1_l1_9
+s1_l1_10
+s1_l1_11
+s1_l1_12
+s1_l1_13
+s1_l1_14
+
+=============
+Test 1.11:112
+=============
+e1_l1_1
+e1_l1_2
+e1_l1_3
+e1_l1_4
+e1_l1_5
+e1_l1_6
+e1_l1_7
+e1_l1_8
+e1_l1_9
+e1_l1_10
+e1_l1_11
+e1_l1_12
+e1_l1_13
+e1_l1_14
+
+=============
+Test 1.12:113
+=============
+e1_l1_1
+e1_l1_2
+e1_l1_3
+e1_l1_4
+e1_l1_5
+e1_l1_6
+e1_l1_7
+e1_l1_8
+e1_l1_9
+e1_l1_10
+e1_l1_11
+e1_l1_12
+e1_l1_13
+e1_l1_14
+
+=============
+Test 1.13:114
+=============
+e1_l1_1
+e2_e1_l1_1
+e2_e1_l1_1
+e1_l1_2
+e2_e1_l1_2
+e2_e1_l1_2
+e1_l1_3
+e2_e1_l1_3
+e2_e1_l1_3
+e1_l1_4
+e2_e1_l1_4
+e2_e1_l1_4
+e1_l1_5
+e2_e1_l1_5
+e2_e1_l1_5
+e1_l1_6
+e2_e1_l1_6
+e2_e1_l1_6
+e1_l1_7
+e2_e1_l1_7
+e2_e1_l1_7
+e1_l1_8
+e2_e1_l1_8
+e2_e1_l1_8
+e1_l1_9
+e2_e1_l1_9
+e2_e1_l1_9
+e1_l1_10
+e2_e1_l1_10
+e2_e1_l1_10
+e1_l1_11
+e2_e1_l1_11
+e2_e1_l1_11
+e1_l1_12
+e2_e1_l1_12
+e2_e1_l1_12
+e1_l1_13
+e2_e1_l1_13
+e2_e1_l1_13
+e1_l1_14
+e2_e1_l1_14
+e2_e1_l1_14
+
+=============
+Test 1.14:115
+=============
+s1_l1_1
+s2_s1_l1_1
+s2_s1_l1_1
+s1_l1_2
+s2_s1_l1_2
+s2_s1_l1_2
+s1_l1_3
+s2_s1_l1_3
+s2_s1_l1_3
+s1_l1_4
+s2_s1_l1_4
+s2_s1_l1_4
+s1_l1_5
+s2_s1_l1_5
+s2_s1_l1_5
+s1_l1_6
+s2_s1_l1_6
+s2_s1_l1_6
+s1_l1_7
+s2_s1_l1_7
+s2_s1_l1_7
+s1_l1_8
+s2_s1_l1_8
+s2_s1_l1_8
+s1_l1_9
+s2_s1_l1_9
+s2_s1_l1_9
+s1_l1_10
+s2_s1_l1_10
+s2_s1_l1_10
+s1_l1_11
+s2_s1_l1_11
+s2_s1_l1_11
+s1_l1_12
+s2_s1_l1_12
+s2_s1_l1_12
+s1_l1_13
+s2_s1_l1_13
+s2_s1_l1_13
+s1_l1_14
+s2_s1_l1_14
+s2_s1_l1_14
+
+=============
+Test 1.15:116
+=============
+e1_l1_1
+s1_e1_l1_1
+s1_e1_l1_1
+e1_l1_2
+s1_e1_l1_2
+s1_e1_l1_2
+e1_l1_3
+s1_e1_l1_3
+s1_e1_l1_3
+e1_l1_4
+s1_e1_l1_4
+s1_e1_l1_4
+e1_l1_5
+s1_e1_l1_5
+s1_e1_l1_5
+e1_l1_6
+s1_e1_l1_6
+s1_e1_l1_6
+e1_l1_7
+s1_e1_l1_7
+s1_e1_l1_7
+e1_l1_8
+s1_e1_l1_8
+s1_e1_l1_8
+e1_l1_9
+s1_e1_l1_9
+s1_e1_l1_9
+e1_l1_10
+s1_e1_l1_10
+s1_e1_l1_10
+e1_l1_11
+s1_e1_l1_11
+s1_e1_l1_11
+e1_l1_12
+s1_e1_l1_12
+s1_e1_l1_12
+e1_l1_13
+s1_e1_l1_13
+s1_e1_l1_13
+e1_l1_14
+s1_e1_l1_14
+s1_e1_l1_14
+
+=============
+Test 1.16:117
+=============
+e1_l1_1
+e1_l1_1
+e1_l1_2
+e1_l1_2
+e1_l1_3
+e1_l1_3
+e1_l1_4
+e1_l1_4
+e1_l1_5
+e1_l1_5
+e1_l1_6
+e1_l1_6
+e1_l1_7
+e1_l1_7
+e1_l1_8
+e1_l1_8
+e1_l1_9
+e1_l1_9
+e1_l1_10
+e1_l1_10
+e1_l1_11
+e1_l1_11
+e1_l1_12
+e1_l1_12
+e1_l1_13
+e1_l1_13
+e1_l1_14
+e1_l1_14
+e1_l1_1
+e1_l1_1
+e1_l1_2
+e1_l1_2
+e1_l1_3
+e1_l1_3
+e1_l1_4
+e1_l1_4
+e1_l1_5
+e1_l1_5
+e1_l1_6
+e1_l1_6
+e1_l1_7
+e1_l1_7
+e1_l1_8
+e1_l1_8
+e1_l1_9
+e1_l1_9
+e1_l1_10
+e1_l1_10
+e1_l1_11
+e1_l1_11
+e1_l1_12
+e1_l1_12
+e1_l1_13
+e1_l1_13
+e1_l1_14
+e1_l1_14
+
+=============
+Test 1.17:118
+=============
+l1_1
+l1_1
+l1_2
+l1_2
+l1_3
+l1_3
+l1_4
+l1_4
+l1_5
+l1_5
+l1_6
+l1_6
+l1_7
+l1_7
+l1_8
+l1_8
+l1_9
+l1_9
+l1_10
+l1_10
+l1_11
+l1_11
+l1_12
+l1_12
+l1_13
+l1_13
+l1_14
+l1_14
+
+=============
+Test 1.18:119
+=============
+l1_1
+l1_2
+l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+Testing address ranges
+
+============
+Test 2.1:120
+============
+l1_4
+
+============
+Test 2.2:121
+============
+l2_6
+
+============
+Test 2.3:122
+============
+l1_14
+
+============
+Test 2.4:123
+============
+l2_9
+
+============
+Test 2.5:124
+============
+
+============
+Test 2.6:125
+============
+l2_9
+
+============
+Test 2.7:126
+============
+
+============
+Test 2.9:127
+============
+l1_7
+
+=============
+Test 2.10:128
+=============
+l1_7
+
+=============
+Test 2.11:129
+=============
+l1_7
+
+=============
+Test 2.12:130
+=============
+l1_1
+l1_2
+l1_3
+l1_4
+
+=============
+Test 2.13:131
+=============
+l1_1
+l1_2
+l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+l2_1
+l2_2
+l2_3
+l2_4
+l2_5
+l2_6
+l2_7
+l2_8
+l2_9
+
+=============
+Test 2.14:132
+=============
+l1_1
+l1_2
+l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+l2_1
+l2_2
+l2_3
+l2_4
+l2_5
+l2_6
+l2_7
+l2_8
+l2_9
+
+=============
+Test 2.15:133
+=============
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+l2_1
+l2_2
+l2_3
+l2_4
+l2_5
+l2_6
+l2_7
+l2_8
+l2_9
+
+=============
+Test 2.16:134
+=============
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+l2_1
+l2_2
+l2_3
+l2_4
+l2_5
+l2_6
+
+=============
+Test 2.17:135
+=============
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_14
+l2_1
+l2_2
+l2_3
+l2_4
+l2_5
+l2_6
+l2_7
+l2_8
+l2_9
+
+=============
+Test 2.18:136
+=============
+l2_3
+l2_4
+l2_5
+l2_6
+l2_7
+l2_8
+l2_9
+
+=============
+Test 2.19:137
+=============
+l1_12
+
+=============
+Test 2.20:138
+=============
+l1_7
+Brace and other grouping
+
+============
+Test 3.1:139
+============
+l1_1
+l1_2
+l1_3
+^l1T4$
+^l1T5$
+^l1T6$
+^l1T7$
+^l1T8$
+^l1T9$
+^l1T10$
+^l1T11$
+^l1T12$
+l1_13
+l1_14
+
+============
+Test 3.2:140
+============
+l1_1
+l1_2
+l1_3
+^l1_4
+^l1_5
+^l1_6$
+^l1_7$
+^l1T8$
+^l1_9$
+^l1_10$
+^l1_11
+^l1_12
+l1_13
+l1_14
+
+============
+Test 3.3:141
+============
+^l1T1$
+^l1T2$
+^l1T3$
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+^l1T13$
+^l1T14$
+
+============
+Test 3.4:142
+============
+^l1_1
+^l1_2
+^l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+^l1_13
+^l1_14
+Testing a c d and i commands
+
+============
+Test 4.1:143
+============
+before_il1_1
+after_ibefore_il1_1
+before_il1_2
+after_ibefore_il1_2
+before_il1_3
+after_ibefore_il1_3
+before_il1_4
+after_ibefore_il1_4
+before_il1_5
+after_ibefore_il1_5
+before_il1_6
+after_ibefore_il1_6
+before_il1_7
+after_ibefore_il1_7
+before_il1_8
+after_ibefore_il1_8
+before_il1_9
+after_ibefore_il1_9
+before_il1_10
+after_ibefore_il1_10
+before_il1_11
+after_ibefore_il1_11
+before_il1_12
+after_ibefore_il1_12
+before_il1_13
+after_ibefore_il1_13
+before_il1_14
+after_ibefore_il1_14
+before_il2_1
+after_ibefore_il2_1
+before_il2_2
+after_ibefore_il2_2
+before_il2_3
+after_ibefore_il2_3
+before_il2_4
+after_ibefore_il2_4
+before_il2_5
+after_ibefore_il2_5
+before_il2_6
+inserted
+after_ibefore_il2_6
+before_il2_7
+after_ibefore_il2_7
+before_il2_8
+after_ibefore_il2_8
+before_il2_9
+after_ibefore_il2_9
+
+============
+Test 4.2:144
+============
+before_al1_1
+after_abefore_al1_1
+before_al1_2
+after_abefore_al1_2
+before_al1_3
+after_abefore_al1_3
+before_al1_4
+after_abefore_al1_4
+before_a5-12l1_5
+after_abefore_a5-12l1_5
+appended
+before_a5-12l1_6
+after_abefore_a5-12l1_6
+appended
+before_a5-12l1_7
+after_abefore_a5-12l1_7
+appended
+before_a5-12l1_8
+after_abefore_a5-12l1_8
+appended
+before_a5-12l1_9
+after_abefore_a5-12l1_9
+appended
+before_a5-12l1_10
+after_abefore_a5-12l1_10
+appended
+before_a5-12l1_11
+after_abefore_a5-12l1_11
+appended
+before_a5-12l1_12
+after_abefore_a5-12l1_12
+appended
+before_al1_13
+after_abefore_al1_13
+before_al1_14
+after_abefore_al1_14
+before_al2_1
+after_abefore_al2_1
+before_al2_2
+after_abefore_al2_2
+before_al2_3
+after_abefore_al2_3
+before_al2_4
+after_abefore_al2_4
+before_al2_5
+after_abefore_al2_5
+before_al2_6
+after_abefore_al2_6
+before_al2_7
+after_abefore_al2_7
+before_al2_8
+after_abefore_al2_8
+before_al2_9
+after_abefore_al2_9
+
+============
+Test 4.3:145
+============
+^l1_1
+^l1_1$
+appended
+^l1_2
+^l1_2$
+appended
+^l1_3
+^l1_3$
+appended
+^l1_4
+^l1_4$
+appended
+^l1_5
+^l1_5$
+appended
+^l1_6
+^l1_6$
+appended
+^l1_7
+^l1_7$
+appended
+^l1_8
+appended
+^l1_8
+l1_9$
+^l1_10
+appended
+^l1_10
+l1_11$
+^l1_12
+^l1_12$
+appended
+^l1_13
+^l1_13$
+appended
+^l1_14
+^l1_14$
+appended
+^l2_1
+^l2_1$
+^l2_2
+^l2_2$
+^l2_3
+^l2_3$
+^l2_4
+^l2_4$
+^l2_5
+^l2_5$
+^l2_6
+^l2_6$
+^l2_7
+^l2_7$
+^l2_8
+^l2_8$
+^l2_9
+^l2_9$
+
+============
+Test 4.4:146
+============
+hello
+hello
+hello
+hello
+hello
+hello
+hello
+hello
+hello
+hello
+hello
+hello
+hello
+hello
+
+============
+Test 4.5:147
+============
+hello
+
+============
+Test 4.6:148
+============
+hello
+
+============
+Test 4.7:149
+============
+hello
+
+============
+Test 4.8:150
+============
+Testing labels and branching
+
+============
+Test 5.1:151
+============
+label2_l1_1
+label3_label2_l1_1
+label1_l1_2
+label1_l1_3
+label1_l1_4
+label1_l1_5
+label1_l1_6
+label1_l1_7
+label1_l1_8
+label1_l1_9
+label1_l1_10
+label1_l1_11
+label1_l1_12
+label2_l1_13
+label3_label2_l1_13
+label2_l1_14
+label3_label2_l1_14
+
+============
+Test 5.2:152
+============
+tested l2_1
+tested l2_2
+tested l2_3
+tested l2_4
+tested l2_5
+tested l2_6
+tested l2_7
+tested l2_8
+tested l2_9
+tested l2_10
+tested l2_11
+tested l2_12
+tested l2_13
+tested l2_14
+
+============
+Test 5.3:153
+============
+^l1_1
+^l1_1$
+^l1_2
+^l1_2$
+^l1_3
+^l1_3$
+^l1_4
+^l1_4$
+l1_5$
+l1_6$
+l1_7$
+l1_8$
+
+============
+Test 5.4:154
+============
+^l1_1$
+^l1_2$
+^l1_3$
+^l1_4$
+^l1_5$
+^l1_6$
+^l1_7$
+^l1_8$
+l1_9$
+l1_10$
+l1_11$
+l1_12$
+l1_13$
+l1_14$
+
+============
+Test 5.5:155
+============
+^l1_1
+^l1_2
+^l1_4
+^l1_6
+^l1_8
+
+============
+Test 5.6:156
+============
+l1_1
+l1_2
+l1_3
+l1_4
+l1_5
+
+============
+Test 5.7:157
+============
+l1_1
+l1_2
+l1_3
+l1_4
+hello
+l1_5
+
+============
+Test 5.8:158
+============
+m1_1
+m1_2
+m1_3
+m1_4
+m1_5
+m1_6
+m1_7
+m1_8
+m1_9
+m1_10
+m1_11
+m1_12
+m1_13
+m1_14
+Pattern space commands
+
+============
+Test 6.1:159
+============
+changed
+changed
+changed
+changed
+changed
+changed
+changed
+changed
+changed
+changed
+changed
+changed
+changed
+changed
+
+============
+Test 6.2:160
+============
+l1_1
+l1_2
+l1_3
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+
+============
+Test 6.3:161
+============
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+
+============
+Test 6.4:162
+============
+l1_1
+l1_2
+l1_3
+l1_2
+l1_3
+l1_5
+l1_2
+l1_3
+l1_2
+l1_3
+l1_6
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+
+============
+Test 6.5:163
+============
+l1_1
+l1_2
+l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+
+============
+Test 6.6:164
+============
+Testing print and file routines
+
+============
+Test 7.1:165
+============
+\001\002\003\004\005\006\a\b\t$
+\v\f\r\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\
+\035\036\037 !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWX\
+YZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\177\200\201\202\203\204\205\
+\206\207\210\211\212\213\214\215\216\217\220\221\222\223\224\225\226\
+\227\230\231\232\233\234\235\236\237\240\241\242\243\244\245\246\247\
+\250\251\252\253\254\255\256\257\260\261\262\263\264\265\266\267\270\
+\271\272\273\274\275\276\277\300\301\302\303\304\305\306\307\310\311\
+\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\
+\333\334\335\336\337\340\341\342\343\344\345\346\347\350\351\352\353\
+\354\355\356\357\360\361\362\363\364\365\366\367\370\371\372\373\374\
+\375\376\377$
+$
+
+============
+Test 7.2:166
+============
+l1_1
+l1_2
+l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+15
+l2_1
+16
+l2_2
+17
+l2_3
+18
+l2_4
+19
+l2_5
+20
+l2_6
+21
+l2_7
+22
+l2_8
+23
+l2_9
+
+============
+Test 7.3:167
+============
+l1_1
+l1_2
+l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+w results
+l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+
+============
+Test 7.4:168
+============
+l1_1
+l1_2
+l1_3
+l1_4
+l2_1
+l2_2
+l2_3
+l2_4
+l2_5
+l2_6
+l2_7
+l2_8
+l2_9
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+
+============
+Test 7.5:169
+============
+l1_1
+l1_2
+l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+
+============
+Test 7.6:170
+============
+l1_1
+l1_2
+l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+
+============
+Test 7.8:171
+============
+
+Testing substitution commands
+
+============
+Test 8.1:172
+============
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXXX
+XXXXX
+XXXXX
+XXXXX
+XXXXX
+
+============
+Test 8.2:173
+============
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXXX
+XXXXX
+XXXXX
+XXXXX
+XXXXX
+
+============
+Test 8.3:174
+============
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXX
+XXXXX
+XXXXX
+XXXXX
+XXXXX
+XXXXX
+
+============
+Test 8.4:175
+============
+l1_1
+l1_2
+l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+
+============
+Test 8.5:176
+============
+l1X1
+l1X2
+l1X3
+l1X4
+l1X5
+l1X6
+l1X7
+l1X8
+l1X9
+l1X10
+l1X11
+l1X12
+l1X13
+l1X14
+
+============
+Test 8.6:177
+============
+(l)(1)(_)(1)
+(l)(1)(_)(2)
+(l)(1)(_)(3)
+(l)(1)(_)(4)
+(l)(1)(_)(5)
+(l)(1)(_)(6)
+(l)(1)(_)(7)
+(l)(1)(_)(8)
+(l)(1)(_)(9)
+(l)(1)(_)(1)(0)
+(l)(1)(_)(1)(1)
+(l)(1)(_)(1)(2)
+(l)(1)(_)(1)(3)
+(l)(1)(_)(1)(4)
+
+============
+Test 8.7:178
+============
+(&)(&)(&)(&)
+(&)(&)(&)(&)
+(&)(&)(&)(&)
+(&)(&)(&)(&)
+(&)(&)(&)(&)
+(&)(&)(&)(&)
+(&)(&)(&)(&)
+(&)(&)(&)(&)
+(&)(&)(&)(&)
+(&)(&)(&)(&)(&)
+(&)(&)(&)(&)(&)
+(&)(&)(&)(&)(&)
+(&)(&)(&)(&)(&)
+(&)(&)(&)(&)(&)
+
+============
+Test 8.8:179
+============
+x_x1xl1
+x_x1xl2
+x_x1xl3
+x_x1xl4
+x_x1xl5
+x_x1xl6
+x_x1xl7
+x_x1xl8
+x_x1xl9
+x_x1xl10
+x_x1xl11
+x_x1xl12
+x_x1xl13
+x_x1xl14
+
+============
+Test 8.9:180
+============
+l1u0
+u1
+u21
+l1u0
+u1
+u22
+l1u0
+u1
+u23
+l1u0
+u1
+u24
+l1u0
+u1
+u25
+l1u0
+u1
+u26
+l1u0
+u1
+u27
+l1u0
+u1
+u28
+l1u0
+u1
+u29
+l1u0
+u1
+u210
+l1u0
+u1
+u211
+l1u0
+u1
+u212
+l1u0
+u1
+u213
+l1u0
+u1
+u214
+
+=============
+Test 8.10:181
+=============
+l1_X
+l1_X
+l1_X
+l1_X
+l1_X
+l1_X
+l1_X
+l1_X
+l1_X
+l1_X0
+l1_X1
+l1_X2
+l1_X3
+l1_X4
+
+=============
+Test 8.11:182
+=============
+lX_1
+lX_2
+lX_3
+lX_4
+lX_5
+lX_6
+lX_7
+lX_8
+lX_9
+lX_10
+lX_11
+lX_12
+lX_13
+lX_14
+s wfile results
+lX_1
+lX_2
+lX_3
+lX_4
+lX_5
+lX_6
+lX_7
+lX_8
+lX_9
+lX_10
+lX_11
+lX_12
+lX_13
+lX_14
+
+=============
+Test 8.12:183
+=============
+lX_X
+lX_X
+lX_X
+lX_4
+lX_5
+lX_6
+lX_7
+lX_8
+lX_9
+lX_X0
+lX_XX
+lX_XX
+lX_XX
+lX_X4
+
+=============
+Test 8.13:184
+=============
+l8_8
+l8_7
+l8_6
+l8_5
+l8_4
+l8_3
+l8_2
+l8_1
+l8_0
+l8_89
+l8_88
+l8_87
+l8_86
+l8_85
+
+=============
+Test 8.14:185
+=============
+l8_8
+l8_7
+l8_6
+l8_5
+l8_4
+l8_3
+l8_2
+l8_1
+l8_0
+l8_89
+l8_88
+l8_87
+l8_86
+l8_85
+
+=============
+Test 8.15:186
+=============
+l1_1Xl1_2
+l1_3
+l1_4
+l1_5
+l1_6
+l1_7
+l1_8
+l1_9
+l1_10
+l1_11
+l1_12
+l1_13
+l1_14
+
+=============
+Test 8.16:187
+=============
+eeefff
+Xeefff
+XYefff
+XYeYff
+XYeYYf
+XYeYYY
+XYeYYY
diff --git a/src/sed/testsuite/bsd.sh b/src/sed/testsuite/bsd.sh
new file mode 100755
index 0000000..fecb2f4
--- /dev/null
+++ b/src/sed/testsuite/bsd.sh
@@ -0,0 +1,434 @@
+#!/bin/sh -
+#	$NetBSD: sed.test,v 1.3 1997/01/09 20:21:37 tls Exp $
+#
+# Copyright (c) 1992 Diomidis Spinellis.
+# Copyright (c) 1992, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#	This product includes software developed by the University of
+#	California, Berkeley and its contributors.
+# 4. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	from: @(#)sed.test	8.1 (Berkeley) 6/6/93
+#	$NetBSD: sed.test,v 1.3 1997/01/09 20:21:37 tls Exp $
+#
+
+# sed Regression Tests
+
+# Modified by Paolo Bonzini to:
+# - not warn about buggy seds
+# - run tests once instead of comparing them to the system sed
+# - remove most uses of awk
+# - cleanup at exit
+# - comment tests that broke because of extensions
+
+main()
+{
+	TEST="${1-../sed/sed}"
+	TESTLOG="${2-sed.out}"
+	# DICT="${3-/usr/share/dict/words}"
+
+	: > lines1
+	: > lines2
+	for i in 1 2 3 4 5 6 7 8 9; do
+	  echo l1_$i >> lines1
+	  echo l2_$i >> lines2
+	done
+	for i in 10 11 12 13 14; do
+	  echo l1_$i >> lines1
+	done
+
+	# Set these flags to get messages about known problems
+	tests "$TEST" "$TESTLOG"
+
+	rm -f lines[1234] script[12]
+}
+
+tests()
+{
+	SED="$1"
+	LOG="$2"
+	MARK=100
+	rm -f "$LOG"
+
+	exec 3>&0 4>&1 5>&2
+	exec 0</dev/null 1>/dev/null 2>/dev/null
+	test_error
+	exec 0>&3 1>&4 2>&5
+
+	exec 4>&1 5>&2
+	test_args
+	test_addr
+	test_group
+	test_acid
+	test_branch
+	test_pattern
+	test_print
+	test_subst
+	exec 1>&4 2>&5
+}
+
+mark()
+{
+	exec 2>&1 >>$LOG
+	test $MARK = 100 || echo
+	MARK=`expr $MARK + 1`
+	echo "Test $1:$MARK" | sed 's/./=/g'
+	echo "Test $1:$MARK"
+	echo "Test $1:$MARK" | sed 's/./=/g'
+}
+
+test_args()
+{
+	mark '1.1'
+	echo Testing argument parsing
+	echo First type
+	$SED 's/^/e1_/p' lines1
+	mark '1.2' ; $SED -n 's/^/e1_/p' lines1
+	mark '1.3' ; $SED 's/^/e1_/p' <lines1
+	mark '1.4' ; $SED -n 's/^/e1_/p' <lines1
+	echo Second type
+	mark '1.4.1'
+	$SED -e '' <lines1
+	echo 's/^/s1_/p' >script1
+	echo 's/^/s2_/p' >script2
+	mark '1.5' ; $SED -f script1 lines1
+	mark '1.6' ; $SED -f script1 <lines1
+	mark '1.7' ; $SED -e 's/^/e1_/p' lines1
+	mark '1.8' ; $SED -e 's/^/e1_/p' <lines1
+	mark '1.9' ; $SED -n -f script1 lines1
+	mark '1.10' ; $SED -n -f script1 <lines1
+	mark '1.11' ; $SED -n -e 's/^/e1_/p' lines1
+	mark '1.12' ; $SED -n -e 's/^/e1_/p' <lines1
+	mark '1.13' ; $SED -e 's/^/e1_/p' -e 's/^/e2_/p' lines1
+	mark '1.14' ; $SED -f script1 -f script2 lines1
+	mark '1.15' ; $SED -e 's/^/e1_/p' -f script1 lines1
+	mark '1.16' ; $SED -e 's/^/e1_/p' lines1 lines1
+	# POSIX D11.2:11251
+	mark '1.17' ; $SED p <lines1 lines1
+cat >script1 <<EOF
+#n
+# A comment
+
+p
+EOF
+	mark '1.18' ; $SED -f script1 <lines1 lines1
+}
+
+test_addr()
+{
+	echo Testing address ranges
+	mark '2.1' ; $SED -n -e '4p' lines1
+	mark '2.2' ; $SED -n -e '20p' lines1 lines2
+	mark '2.3' ; $SED -n -e '$p' lines1
+	mark '2.4' ; $SED -n -e '$p' lines1 lines2
+	mark '2.5' ; $SED -n -e '$a\
+hello' /dev/null
+	mark '2.6' ; $SED -n -e '$p' lines1 /dev/null lines2
+	# Should not print anything
+	mark '2.7' ; $SED -n -e '20p' lines1
+	# Disabled because it is undefined behavior
+	# mark '2.8' ; $SED -n -e '0p' lines1
+	mark '2.9' ; $SED -n '/l1_7/p' lines1
+	mark '2.10' ; $SED -n ' /l1_7/ p' lines1
+	mark '2.11' ; $SED -n '\_l1\_7_p' lines1
+	mark '2.12' ; $SED -n '1,4p' lines1
+	mark '2.13' ; $SED -n '1,$p' lines1 lines2
+	mark '2.14' ; $SED -n '1,/l2_9/p' lines1 lines2
+	mark '2.15' ; $SED -n '/4/,$p' lines1 lines2
+	mark '2.16' ; $SED -n '/4/,20p' lines1 lines2
+	mark '2.17' ; $SED -n '/4/,/10/p' lines1 lines2
+	mark '2.18' ; $SED -n '/l2_3/,/l1_8/p' lines1 lines2
+	mark '2.19' ; $SED -n '12,3p' lines1 lines2
+	mark '2.20' ; $SED -n '/l1_7/,3p' lines1 lines2
+}
+
+test_group()
+{
+	echo Brace and other grouping
+	mark '3.1' ; $SED -e '
+4,12 {
+	s/^/^/
+	s/$/$/
+	s/_/T/
+}' lines1
+	mark '3.2' ; $SED -e '
+4,12 {
+	s/^/^/
+	/6/,/10/ {
+		s/$/$/
+		/8/ s/_/T/
+	}
+}' lines1
+	mark '3.3' ; $SED -e '
+4,12 !{
+	s/^/^/
+	/6/,/10/ !{
+		s/$/$/
+		/8/ !s/_/T/
+	}
+}' lines1
+	mark '3.4' ; $SED -e '4,12!s/^/^/' lines1
+}
+
+test_acid()
+{
+	echo Testing a c d and i commands
+	mark '4.1' ; $SED -n -e '
+s/^/before_i/p
+20i\
+inserted
+s/^/after_i/p
+' lines1 lines2
+	mark '4.2' ; $SED -n -e '
+5,12s/^/5-12/
+s/^/before_a/p
+/5-12/a\
+appended
+s/^/after_a/p
+' lines1 lines2
+	mark '4.3' ; $SED -n -e '
+s/^/^/p
+/l1_/a\
+appended
+8,10N
+s/$/$/p
+' lines1 lines2
+	mark '4.4' ; $SED -n -e '
+c\
+hello
+' lines1
+	mark '4.5' ; $SED -n -e '
+8c\
+hello
+' lines1
+	mark '4.6' ; $SED -n -e '
+3,14c\
+hello
+' lines1
+	mark '4.7' ; $SED -n -e '
+8,3c\
+hello
+' lines1
+	mark '4.8' ; $SED d <lines1
+}
+
+test_branch()
+{
+	echo Testing labels and branching
+	mark '5.1' ; $SED -n -e '
+b label4
+:label3
+s/^/label3_/p
+b end
+:label4
+2,12b label1
+b label2
+:label1
+s/^/label1_/p
+b
+:label2
+s/^/label2_/p
+b label3
+:end
+' lines1
+	mark '5.2' ; $SED -n -e '
+s/l1_/l2_/
+t ok
+b
+:ok
+s/^/tested /p
+' lines1 lines2
+	mark '5.3' ; $SED -n -e '
+5,8b inside
+1,5 {
+	s/^/^/p
+	:inside
+	s/$/$/p
+}
+' lines1
+# Check that t clears the substitution done flag
+	mark '5.4' ; $SED -n -e '
+1,8s/^/^/
+t l1
+:l1
+t l2
+s/$/$/p
+b
+:l2
+s/^/ERROR/
+' lines1
+# Check that reading a line clears the substitution done flag
+	mark '5.5' ; $SED -n -e '
+t l2
+1,8s/^/^/p
+2,7N
+b
+:l2
+s/^/ERROR/p
+' lines1
+	mark '5.6' ; $SED 5q lines1
+	mark '5.7' ; $SED -e '
+5i\
+hello
+5q' lines1
+# Branch across block boundary
+	mark '5.8' ; $SED -e '
+{
+:b
+}
+s/l/m/
+tb' lines1
+}
+
+test_pattern()
+{
+echo Pattern space commands
+# Check that the pattern space is deleted
+	mark '6.1' ; $SED -n -e '
+c\
+changed
+p
+' lines1
+	mark '6.2' ; $SED -n -e '
+4d
+p
+' lines1
+	mark '6.3' ; $SED -e '
+N
+N
+N
+D
+P
+4p
+' lines1
+	mark '6.4' ; $SED -e '
+2h
+3H
+4g
+5G
+6x
+6p
+6x
+6p
+' lines1
+	mark '6.5' ; $SED -e '4n' lines1
+	mark '6.6' ; $SED -n -e '4n' lines1
+}
+
+test_print()
+{
+	echo Testing print and file routines
+	awk 'END {for (i = 1; i < 256; i++) printf("%c", i);print "\n"}' \
+		</dev/null >lines3
+	mark '7.1' ; $SED -n l lines3
+	mark '7.2' ; $SED -e '/l2_/=' lines1 lines2
+	rm -f lines4
+	mark '7.3' ; $SED -e '3,12w lines4' lines1
+	echo w results
+	cat lines4
+	mark '7.4' ; $SED -e '4r lines2' lines1
+	mark '7.5' ; $SED -e '5r /dev/dds' lines1
+	mark '7.6' ; $SED -e '6r /dev/null' lines1
+	# mark '7.7'
+	# sed '200q' $DICT | sed 's$.*$s/^/&/w tmpdir/&$' >script1
+	# rm -rf tmpdir
+	# mkdir tmpdir
+	# $SED -f script1 lines1
+	# cat tmpdir/*
+	# rm -rf tmpdir
+	mark '7.8'
+	echo line1 > lines3
+	echo "" >> lines3
+	$SED -n -e '$p' lines3 /dev/null
+}
+
+test_subst()
+{
+	echo Testing substitution commands
+	mark '8.1' ; $SED -e 's/./X/g' lines1
+	mark '8.2' ; $SED -e 's,.,X,g' lines1
+	mark '8.3' ; $SED -e 's.\..X.g' lines1
+# POSIX does not say that this should work
+#	mark '8.4' ; $SED -e 's/[/]/Q/' lines1
+	mark '8.4' ; $SED -e 's/[\/]/Q/' lines1
+	mark '8.5' ; $SED -e 's_\__X_' lines1
+	mark '8.6' ; $SED -e 's/./(&)/g' lines1
+	mark '8.7' ; $SED -e 's/./(\&)/g' lines1
+	mark '8.8' ; $SED -e 's/\(.\)\(.\)\(.\)/x\3x\2x\1/g' lines1
+	mark '8.9' ; $SED -e 's/_/u0\
+u1\
+u2/g' lines1
+	mark '8.10' ; $SED -e 's/./X/4' lines1
+	rm -f lines4
+	mark '8.11' ; $SED -e 's/1/X/w lines4' lines1
+	echo s wfile results
+	cat lines4
+	mark '8.12' ; $SED -e 's/[123]/X/g' lines1
+	mark '8.13' ; $SED -e 'y/0123456789/9876543210/' lines1
+	mark '8.14' ; $SED -e 'y10\123456789198765432\101' lines1
+	mark '8.15' ; $SED -e '1N;2y/\n/X/' lines1
+	mark '8.16'
+	echo 'eeefff' | $SED -e 'p' -e 's/e/X/p' -e ':x' \
+	    -e 's//Y/p' -e '/f/bx'
+}
+
+test_error()
+{
+	$SED -x && exit 1
+	$SED -f && exit 1
+	$SED -e && exit 1
+	$SED -f /dev/dds && exit 1
+	$SED p /dev/dds && exit 1
+	$SED -f /bin/sh && exit 1
+	$SED '{' && exit 1
+	$SED '{' && exit 1
+	$SED '/hello/' && exit 1
+	$SED '1,/hello/' && exit 1
+	$SED -e '-5p' && exit 1
+	$SED '/jj' && exit 1
+	# $SED 'a hello' && exit 1
+	# $SED 'a \ hello' && exit 1
+	$SED 'b foo' && exit 1
+	$SED 'd hello' && exit 1
+	$SED 's/aa' && exit 1
+	$SED 's/aa/' && exit 1
+	$SED 's/a/b' && exit 1
+	$SED 's/a/b/c/d' && exit 1
+	$SED 's/a/b/ 1 2' && exit 1
+	# $SED 's/a/b/ 1 g' && exit 1
+	$SED 's/a/b/w' && exit 1
+	$SED 'y/aa' && exit 1
+	$SED 'y/aa/b/' && exit 1
+	$SED 'y/aa/' && exit 1
+	$SED 'y/a/b' && exit 1
+	$SED 'y/a/b/c/d' && exit 1
+	$SED '!' && exit 1
+	$SED supercalifrangolisticexprialidociussupercalifrangolisticexcius
+}
+
+main ${1+"$@"}
diff --git a/src/sed/testsuite/bug-regex10.c b/src/sed/testsuite/bug-regex10.c
new file mode 100644
index 0000000..ec5b925
--- /dev/null
+++ b/src/sed/testsuite/bug-regex10.c
@@ -0,0 +1,61 @@
+/* Test for re_match with non-zero start.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include <locale.h>
+#include <stdio.h>
+#include <string.h>
+#include <regex.h>
+
+int
+main (void)
+{
+  struct re_pattern_buffer regex;
+  struct re_registers regs;
+  const char *s;
+  int match;
+  int result = 0;
+
+  regs.num_regs = 1;
+  memset (&regex, '\0', sizeof (regex));
+  s = re_compile_pattern ("[abc]*d", 7, &regex);
+  if (s != NULL)
+    {
+      puts ("re_compile_pattern return non-NULL value");
+      result = 1;
+    }
+  else
+    {
+      match = re_match (&regex, "foacabdxy", 9, 2, &regs);
+      if (match != 5)
+	{
+	  printf ("re_match returned %d, expected 5\n", match);
+	  result = 1;
+	}
+      else if (regs.start[0] != 2 || regs.end[0] != 7)
+	{
+	  printf ("re_match returned %d..%d, expected 2..7\n",
+		  regs.start[0], regs.end[0]);
+	  result = 1;
+	}
+	puts (" -> OK");
+    }
+
+  return result;
+}
diff --git a/src/sed/testsuite/bug-regex11.c b/src/sed/testsuite/bug-regex11.c
new file mode 100644
index 0000000..e43e860
--- /dev/null
+++ b/src/sed/testsuite/bug-regex11.c
@@ -0,0 +1,141 @@
+/* Regular expression tests.
+   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+#ifdef HAVE_MCHECK_H
+#include <mcheck.h>
+#endif
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+/* Tests supposed to match.  */
+struct
+{
+  const char *pattern;
+  const char *string;
+  int flags, nmatch;
+  regmatch_t rm[5];
+} tests[] = {
+  /* Test for newline handling in regex.  */
+  { "[^~]*~", "\nx~y", 0, 2, { { 0, 3 }, { -1, -1 } } },
+  /* Other tests.  */
+  { "a(.*)b", "a b", REG_EXTENDED, 2, { { 0, 3 }, { 1, 2 } } },
+  { ".*|\\([KIO]\\)\\([^|]*\\).*|?[KIO]", "10~.~|P|K0|I10|O16|?KSb", 0, 3,
+    { { 0, 21 }, { 15, 16 }, { 16, 18 } } },
+  { ".*|\\([KIO]\\)\\([^|]*\\).*|?\\1", "10~.~|P|K0|I10|O16|?KSb", 0, 3,
+    { { 0, 21 }, { 8, 9 }, { 9, 10 } } },
+  { "^\\(a*\\)\\1\\{9\\}\\(a\\{0,9\\}\\)\\([0-9]*;.*[^a]\\2\\([0-9]\\)\\)",
+    "a1;;0a1aa2aaa3aaaa4aaaaa5aaaaaa6aaaaaaa7aaaaaaaa8aaaaaaaaa9aa2aa1a0", 0,
+    5, { { 0, 67 }, { 0, 0 }, { 0, 1 }, { 1, 67 }, { 66, 67 } } },
+  /* Test for BRE expression anchoring.  POSIX says just that this may match;
+     in glibc regex it always matched, so avoid changing it.  */
+  { "\\(^\\|foo\\)bar", "bar", 0, 2, { { 0, 3 }, { -1, -1 } } },
+  { "\\(foo\\|^\\)bar", "bar", 0, 2, { { 0, 3 }, { -1, -1 } } },
+  /* In ERE this must be treated as an anchor.  */
+  { "(^|foo)bar", "bar", REG_EXTENDED, 2, { { 0, 3 }, { -1, -1 } } },
+  { "(foo|^)bar", "bar", REG_EXTENDED, 2, { { 0, 3 }, { -1, -1 } } },
+  /* Here ^ cannot be treated as an anchor according to POSIX.  */
+  { "(^|foo)bar", "(^|foo)bar", 0, 2, { { 0, 10 }, { -1, -1 } } },
+  { "(foo|^)bar", "(foo|^)bar", 0, 2, { { 0, 10 }, { -1, -1 } } },
+  /* More tests on backreferences.  */
+  { "()\\1", "x", REG_EXTENDED, 2, { { 0, 0 }, { 0, 0 } } },
+  { "()x\\1", "x", REG_EXTENDED, 2, { { 0, 1 }, { 0, 0 } } },
+  { "()\\1*\\1*", "", REG_EXTENDED, 2, { { 0, 0 }, { 0, 0 } } },
+  { "([0-9]).*\\1(a*)", "7;7a6", REG_EXTENDED, 3, { { 0, 4 }, { 0, 1 }, { 3, 4 } } },
+  { "([0-9]).*\\1(a*)", "7;7a", REG_EXTENDED, 3, { { 0, 4 }, { 0, 1 }, { 3, 4 } } },
+  { "(b)()c\\1", "bcb", REG_EXTENDED, 3, { { 0, 3 }, { 0, 1 }, { 1, 1 } } },
+  { "()(b)c\\2", "bcb", REG_EXTENDED, 3, { { 0, 3 }, { 0, 0 }, { 0, 1 } } },
+  { "a(b)()c\\1", "abcb", REG_EXTENDED, 3, { { 0, 4 }, { 1, 2 }, { 2, 2 } } },
+  { "a()(b)c\\2", "abcb", REG_EXTENDED, 3, { { 0, 4 }, { 1, 1 }, { 1, 2 } } },
+  { "()(b)\\1c\\2", "bcb", REG_EXTENDED, 3, { { 0, 3 }, { 0, 0 }, { 0, 1 } } },
+  { "(b())\\2\\1", "bbbb", REG_EXTENDED, 3, { { 0, 2 }, { 0, 1 }, { 1, 1 } } },
+  { "a()(b)\\1c\\2", "abcb", REG_EXTENDED, 3, { { 0, 4 }, { 1, 1 }, { 1, 2 } } },
+  { "a()d(b)\\1c\\2", "adbcb", REG_EXTENDED, 3, { { 0, 5 }, { 1, 1 }, { 2, 3 } } },
+  { "a(b())\\2\\1", "abbbb", REG_EXTENDED, 3, { { 0, 3 }, { 1, 2 }, { 2, 2 } } },
+  { "(bb())\\2\\1", "bbbb", REG_EXTENDED, 3, { { 0, 4 }, { 0, 2 }, { 2, 2 } } },
+  { "^(.?)(.?)(.?)(.?)(.?).?\\5\\4\\3\\2\\1$",
+    "level", REG_NOSUB | REG_EXTENDED, 0, { { -1, -1 } } },
+  { "^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.).?\\9\\8\\7\\6\\5\\4\\3\\2\\1$|^.?$",
+    "level", REG_NOSUB | REG_EXTENDED, 0, { { -1, -1 } } },
+  { "^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.).?\\9\\8\\7\\6\\5\\4\\3\\2\\1$|^.?$",
+    "abcdedcba", REG_EXTENDED, 1, { { 0, 9 } } },
+#if 0
+  /* XXX Not used since they fail so far.  */
+  { "^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.).?\\9\\8\\7\\6\\5\\4\\3\\2\\1$|^.?$",
+    "ababababa", REG_EXTENDED, 1, { { 0, 9 } } },
+  { "^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?).?\\9\\8\\7\\6\\5\\4\\3\\2\\1$",
+    "level", REG_NOSUB | REG_EXTENDED, 0, { { -1, -1 } } },
+  { "^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?).?\\9\\8\\7\\6\\5\\4\\3\\2\\1$",
+    "ababababa", REG_EXTENDED, 1, { { 0, 9 } } },
+#endif
+};
+
+int
+main (void)
+{
+  regex_t re;
+  regmatch_t rm[5];
+  size_t i;
+  int n, ret = 0;
+
+#ifdef HAVE_MCHECK_H
+  mtrace ();
+#endif
+
+  for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
+    {
+      n = regcomp (&re, tests[i].pattern, tests[i].flags);
+      if (n != 0)
+	{
+	  char buf[500];
+	  regerror (n, &re, buf, sizeof (buf));
+	  printf ("%s: regcomp %lu failed: %s\n", tests[i].pattern, i, buf);
+	  ret = 1;
+	  continue;
+	}
+
+      if (regexec (&re, tests[i].string, tests[i].nmatch, rm, 0))
+	{
+	  printf ("%s: regexec %lu failed\n", tests[i].pattern, i);
+	  ret = 1;
+	  regfree (&re);
+	  continue;
+	}
+
+      for (n = 0; n < tests[i].nmatch; ++n)
+	if (rm[n].rm_so != tests[i].rm[n].rm_so
+              || rm[n].rm_eo != tests[i].rm[n].rm_eo)
+	  {
+	    if (tests[i].rm[n].rm_so == -1 && tests[i].rm[n].rm_eo == -1)
+	      break;
+	    printf ("%s: regexec %lu match failure rm[%d] %d..%d\n",
+		    tests[i].pattern, i, n, rm[n].rm_so, rm[n].rm_eo);
+	    ret = 1;
+	    break;
+	  }
+
+      regfree (&re);
+    }
+
+  return ret;
+}
diff --git a/src/sed/testsuite/bug-regex12.c b/src/sed/testsuite/bug-regex12.c
new file mode 100644
index 0000000..d73c810
--- /dev/null
+++ b/src/sed/testsuite/bug-regex12.c
@@ -0,0 +1,79 @@
+/* Regular expression tests.
+   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+#ifdef HAVE_MCHECK_H
+#include <mcheck.h>
+#endif
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+/* Tests supposed to not match.  */
+struct
+{
+  const char *pattern;
+  const char *string;
+  int flags, nmatch;
+} tests[] = {
+  { "^<\\([^~]*\\)\\([^~]\\)[^~]*~\\1\\(.\\).*|=.*\\3.*\\2",
+    "<,.8~2,~so-|=-~.0,123456789<><", REG_NOSUB, 0 },
+  /* In ERE, all carets must be treated as anchors.  */
+  { "a^b", "a^b", REG_EXTENDED, 0 }
+};
+
+int
+main (void)
+{
+  regex_t re;
+  regmatch_t rm[4];
+  size_t i;
+  int n, ret = 0;
+
+#ifdef HAVE_MCHECK_H
+  mtrace ();
+#endif
+
+  for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
+    {
+      n = regcomp (&re, tests[i].pattern, tests[i].flags);
+      if (n != 0)
+	{
+	  char buf[500];
+	  regerror (n, &re, buf, sizeof (buf));
+	  printf ("regcomp %lu failed: %s\n", i, buf);
+	  ret = 1;
+	  continue;
+	}
+
+      if (! regexec (&re, tests[i].string, tests[i].nmatch,
+		     tests[i].nmatch ? rm : NULL, 0))
+	{
+	  printf ("regexec %lu incorrectly matched\n", i);
+	  ret = 1;
+	}
+
+      regfree (&re);
+    }
+
+  return ret;
+}
diff --git a/src/sed/testsuite/bug-regex13.c b/src/sed/testsuite/bug-regex13.c
new file mode 100644
index 0000000..9f57e3b
--- /dev/null
+++ b/src/sed/testsuite/bug-regex13.c
@@ -0,0 +1,109 @@
+/* Regular expression tests.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+#ifdef HAVE_MCHECK_H
+#include <mcheck.h>
+#endif
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static struct
+{
+  int syntax;
+  const char *pattern;
+  const char *string;
+  int start;
+} tests[] = {
+  {RE_BACKSLASH_ESCAPE_IN_LISTS, "[0\\-9]", "1", -1}, /* It should not match.  */
+  {RE_BACKSLASH_ESCAPE_IN_LISTS, "[0\\-9]", "-", 0}, /* It should match.  */
+  {RE_SYNTAX_POSIX_BASIC, "s1\n.*\ns3", "s1\ns2\ns3", 0},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}c", "ac", 0},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}c", "abc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}c", "abbc", -1},
+  /* Nested duplication.  */
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{1}c", "ac", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{1}c", "abc", 0},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{1}c", "abbc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{2}{2}c", "ac", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{2}{2}c", "abbc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{2}{2}c", "abbbbc", 0},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{2}{2}c", "abbbbbc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}{1}c", "ac", 0},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}{1}c", "abc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}{1}c", "abbc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{0}c", "ac", 0},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{0}c", "abc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{0}c", "abbc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}*c", "ac", 0},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}*c", "abc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}*c", "abbc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}?c", "ac", 0},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}?c", "abc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}?c", "abbc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}+c", "ac", 0},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}+c", "abc", -1},
+  {RE_SYNTAX_POSIX_EXTENDED, "ab{0}+c", "abbc", -1},
+};
+
+int
+main (void)
+{
+  struct re_pattern_buffer regbuf;
+  const char *err;
+  size_t i;
+  int ret = 0;
+
+#ifdef HAVE_MCHECK_H
+  mtrace ();
+#endif
+
+  for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
+    {
+      int start;
+      re_set_syntax (tests[i].syntax);
+      memset (&regbuf, '\0', sizeof (regbuf));
+      err = re_compile_pattern (tests[i].pattern, strlen (tests[i].pattern),
+                                &regbuf);
+      if (err != NULL)
+	{
+	  printf ("re_compile_pattern failed: %s\n", err);
+	  ret = 1;
+	  continue;
+	}
+
+      start = re_search (&regbuf, tests[i].string, strlen (tests[i].string),
+                         0, strlen (tests[i].string), NULL);
+      if (start != tests[i].start)
+	{
+	  printf ("re_search failed %d\n", start);
+	  ret = 1;
+	  regfree (&regbuf);
+	  continue;
+	}
+      regfree (&regbuf);
+    }
+
+  return ret;
+}
diff --git a/src/sed/testsuite/bug-regex14.c b/src/sed/testsuite/bug-regex14.c
new file mode 100644
index 0000000..168435b
--- /dev/null
+++ b/src/sed/testsuite/bug-regex14.c
@@ -0,0 +1,60 @@
+/* Tests re_comp and re_exec.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include "config.h"
+
+#define _REGEX_RE_COMP
+#include <sys/types.h>
+#ifdef HAVE_MCHECK_H
+#include <mcheck.h>
+#endif
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main (void)
+{
+  const char *err;
+  size_t i;
+  int ret = 0;
+
+#ifdef HAVE_MCHECK_H
+  mtrace ();
+#endif
+
+  for (i = 0; i < 100; ++i)
+    {
+      err = re_comp ("a t.st");
+      if (err)
+	{
+	  printf ("re_comp failed: %s\n", err);
+	  ret = 1;
+	}
+
+      if (! re_exec ("This is a test."))
+	{
+	  printf ("re_exec failed\n");
+	  ret = 1;
+	}
+    }
+
+  return ret;
+}
diff --git a/src/sed/testsuite/bug-regex15.c b/src/sed/testsuite/bug-regex15.c
new file mode 100644
index 0000000..c7eddf7
--- /dev/null
+++ b/src/sed/testsuite/bug-regex15.c
@@ -0,0 +1,47 @@
+/* Test for memory/CPU leak in regcomp.  */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define TEST_DATA_LIMIT (32 << 20)
+
+int
+main ()
+{
+#ifdef RLIMIT_DATA
+  regex_t re;
+  int reerr;
+
+  /* Try to avoid eating all memory if a test leaks.  */
+  struct rlimit data_limit;
+  if (getrlimit (RLIMIT_DATA, &data_limit) == 0)
+    {
+      if ((rlim_t) TEST_DATA_LIMIT > data_limit.rlim_max)
+	data_limit.rlim_cur = data_limit.rlim_max;
+      else if (data_limit.rlim_cur > (rlim_t) TEST_DATA_LIMIT)
+	data_limit.rlim_cur = (rlim_t) TEST_DATA_LIMIT;
+      if (setrlimit (RLIMIT_DATA, &data_limit) < 0)
+	perror ("setrlimit: RLIMIT_DATA");
+    }
+  else
+    perror ("getrlimit: RLIMIT_DATA");
+
+  reerr = regcomp (&re, "^6?3?[25]?5?[14]*[25]*[69]*+[58]*87?4?$",
+		   REG_EXTENDED | REG_NOSUB);
+  if (reerr != 0)
+    {
+      char buf[100];
+      regerror (reerr, &re, buf, sizeof buf);
+      printf ("regerror %s\n", buf);
+      return 1;
+    }
+
+  return 0;
+#else
+  return 77;
+#endif
+}
diff --git a/src/sed/testsuite/bug-regex16.c b/src/sed/testsuite/bug-regex16.c
new file mode 100644
index 0000000..1e41ccb
--- /dev/null
+++ b/src/sed/testsuite/bug-regex16.c
@@ -0,0 +1,35 @@
+/* Test re_compile_pattern error messages.  */
+
+#include <stdio.h>
+#include <string.h>
+#include <regex.h>
+
+int
+main (void)
+{
+  struct re_pattern_buffer re;
+  const char *s;
+  int ret = 0;
+
+  re_set_syntax (RE_SYNTAX_POSIX_EGREP);
+  memset (&re, 0, sizeof (re));
+  s = re_compile_pattern ("[[.invalid_collating_symbol.]]", 30, &re);
+  if (s == NULL || strcmp (s, "Invalid collation character"))
+    {
+      printf ("re_compile_pattern returned %s\n", s);
+      ret = 1;
+    }
+  s = re_compile_pattern ("[[=invalid_equivalence_class=]]", 31, &re);
+  if (s == NULL || strcmp (s, "Invalid collation character"))
+    {
+      printf ("re_compile_pattern returned %s\n", s);
+      ret = 1;
+    }
+  s = re_compile_pattern ("[[:invalid_character_class:]]", 29, &re);
+  if (s == NULL || strcmp (s, "Invalid character class name"))
+    {
+      printf ("re_compile_pattern returned %s\n", s);
+      ret = 1;
+    }
+  return ret;
+}
diff --git a/src/sed/testsuite/bug-regex21.c b/src/sed/testsuite/bug-regex21.c
new file mode 100644
index 0000000..463e8d4
--- /dev/null
+++ b/src/sed/testsuite/bug-regex21.c
@@ -0,0 +1,51 @@
+/* Test for memory leaks in regcomp.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include "config.h"
+
+#ifdef HAVE_MCHECK_H
+#include <mcheck.h>
+#endif
+#include <regex.h>
+#include <stdio.h>
+
+int main (void)
+{
+  regex_t re;
+  int i;
+  int ret = 0;
+
+#ifdef HAVE_MCHECK_H
+  mtrace ();
+#endif
+
+  for (i = 0; i < 32; ++i)
+    {
+      if (regcomp (&re, "X-.+:.+Y=\".*\\.(A|B|C|D|E|F|G|H|I",
+		   REG_EXTENDED | REG_ICASE) == 0)
+	{
+	  puts ("regcomp unexpectedly succeeded");
+	  ret = 1;
+	}
+      else
+	regfree (&re);
+    }
+  return ret;
+}
diff --git a/src/sed/testsuite/bug-regex7.c b/src/sed/testsuite/bug-regex7.c
new file mode 100644
index 0000000..a81cad7
--- /dev/null
+++ b/src/sed/testsuite/bug-regex7.c
@@ -0,0 +1,92 @@
+/* Test for regs allocation in re_search and re_match.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Stepan Kasal <kasal@math.cas.cz>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <regex.h>
+
+
+int
+main (void)
+{
+  struct re_pattern_buffer regex;
+  struct re_registers regs;
+  const char *s;
+  int match, n;
+  int result = 0;
+
+  memset (&regex, '\0', sizeof (regex));
+  regs.start = regs.end = NULL;
+  regs.num_regs = 0;
+  s = re_compile_pattern ("a", 1, &regex);
+  if (s != NULL)
+    {
+      puts ("failed to compile pattern \"a\"");
+      result = 1;
+    }
+  else
+    {
+      match = re_search (&regex, "baobab", 6, 0, 6, &regs);
+      n = 1;
+      if (match != 1)
+	{
+	  printf ("re_search returned %d, expected 1\n", match);
+	  result = 1;
+	}
+      else if (regs.num_regs <= n || regs.start[n] != -1 || regs.end[n] != -1)
+	{
+	  puts ("re_search failed to fill the -1 sentinel");
+	  result = 1;
+	}
+    }
+
+  free (regex.buffer);
+  memset (&regex, '\0', sizeof (regex));
+
+  s = re_compile_pattern ("\\(\\(\\(a\\)\\)\\)", 13, &regex);
+  if (s != NULL)
+    {
+      puts ("failed to compile pattern /\\(\\(\\(a\\)\\)\\)/");
+      result = 1;
+    }
+  else
+    {
+      match = re_match (&regex, "apl", 3, 0, &regs);
+      n = 4;
+      if (match != 1)
+	{
+	  printf ("re_match returned %d, expected 1\n", match);
+	  result = 1;
+	}
+      else if (regs.num_regs <= n || regs.start[n] != -1 || regs.end[n] != -1)
+	{
+	  puts ("re_match failed to fill the -1 sentinel");
+	  result = 1;
+	}
+    }
+
+  if (result == 0)
+    puts (" -> OK");
+
+  return result;
+}
diff --git a/src/sed/testsuite/bug-regex8.c b/src/sed/testsuite/bug-regex8.c
new file mode 100644
index 0000000..8e1d557
--- /dev/null
+++ b/src/sed/testsuite/bug-regex8.c
@@ -0,0 +1,84 @@
+/* Test for the STOP parameter of re_match_2 and re_search_2.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Stepan Kasal <kasal@math.cas.cz>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <regex.h>
+
+
+int
+main (void)
+{
+  struct re_pattern_buffer regex;
+  const char *s;
+  int match[4];
+
+  memset (&regex, '\0', sizeof (regex));
+
+  s = re_compile_pattern ("xy$", 3, &regex);
+  if (s != NULL)
+    {
+      puts ("failed to compile pattern \"xy$\"");
+      return 1;
+    }
+  else
+    match[0] = re_match_2(&regex,"xyz",3,NULL,0,0,NULL,2);
+
+  free (regex.buffer);
+  memset (&regex, '\0', sizeof (regex));
+
+  s = re_compile_pattern ("xy\\>", 4, &regex);
+  if (s != NULL)
+    {
+      puts ("failed to compile pattern \"xy\\>\"");
+      return 1;
+    }
+  else
+    match[1] = re_search_2(&regex,"xyz",3,NULL,0,0,2,NULL,2);
+
+  free (regex.buffer);
+  memset (&regex, '\0', sizeof (regex));
+
+  s = re_compile_pattern ("xy \\<", 5, &regex);
+  if (s != NULL)
+    {
+      puts ("failed to compile pattern \"xy \\<\"");
+      return 1;
+    }
+  else
+    {
+      match[2] = re_match_2(&regex,"xy  ",4,NULL,0,0,NULL,3);
+      match[3] = re_match_2(&regex,"xy z",4,NULL,0,0,NULL,3);
+    }
+
+  if (match[0] != -1 || match[1] != -1 || match[2] != -1 || match[3] != 3)
+    {
+      printf ("re_{match,search}_2 returned %d,%d,%d,%d, expected -1,-1,-1,3\n",
+		match[0], match[1], match[2], match[3]);
+      return 1;
+    }
+
+  puts (" -> OK");
+
+  return 0;
+}
diff --git a/src/sed/testsuite/bug-regex9.c b/src/sed/testsuite/bug-regex9.c
new file mode 100644
index 0000000..cc77d74
--- /dev/null
+++ b/src/sed/testsuite/bug-regex9.c
@@ -0,0 +1,73 @@
+/* Test for memory handling in regex.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+#ifdef HAVE_MCHECK_H
+#include <mcheck.h>
+#endif
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+static const char text[] = "#! /bin/sh";
+
+int
+main (void)
+{
+  regex_t re;
+  regmatch_t rm[2];
+  int n;
+
+#ifdef HAVE_MCHECK_H
+  mtrace ();
+#endif
+
+  n = regcomp (&re, "^#! */.*/(k|ba||pdk|z)sh", REG_EXTENDED);
+  if (n != 0)
+    {
+      char buf[500];
+      regerror (n, &re, buf, sizeof (buf));
+      printf ("regcomp failed: %s\n", buf);
+      exit (1);
+    }
+
+  for (n = 0; n < 20; ++n)
+    {
+      if (regexec (&re, text, 2, rm, 0))
+	{
+	  puts ("regexec failed");
+	  exit (2);
+	}
+      if (rm[0].rm_so != 0 || rm[0].rm_eo != 10
+	  || rm[1].rm_so != 8 || rm[1].rm_eo != 8)
+	{
+	  printf ("regexec match failure: %d %d %d %d\n",
+		  rm[0].rm_so, rm[0].rm_eo, rm[1].rm_so, rm[1].rm_eo);
+	  exit (3);
+	}
+    }
+
+  regfree (&re);
+
+  return 0;
+}
diff --git a/src/sed/testsuite/classes.good b/src/sed/testsuite/classes.good
new file mode 100644
index 0000000..58f96f4
--- /dev/null
+++ b/src/sed/testsuite/classes.good
@@ -0,0 +1,4 @@
+: ${_cv_='emptyvar'}
+: ${ac_cv_prog/RANLIB='/usr/bin/ranlib'}
+: ${ac_cv_prog/CC='/usr/unsupported/\ \ /lib/_cv_/cc'}
+: ${a/c_cv_prog/CPP='/usr/bin/cpp'}
diff --git a/src/sed/testsuite/classes.inp b/src/sed/testsuite/classes.inp
new file mode 100644
index 0000000..f1314b6
--- /dev/null
+++ b/src/sed/testsuite/classes.inp
@@ -0,0 +1,6 @@
+_cv_=emptyvar
+ac_cv_prog/RANLIB=/usr/bin/ranlib
+ac_cv_prog/CC=/usr/unsupported/\ \ /lib/_cv_/cc
+a/c_cv_prog/CPP=/usr/bin/cpp
+SHELL=bash
+GNU=GNU!UNIX
diff --git a/src/sed/testsuite/classes.sed b/src/sed/testsuite/classes.sed
new file mode 100644
index 0000000..897651f
--- /dev/null
+++ b/src/sed/testsuite/classes.sed
@@ -0,0 +1,2 @@
+# inspired by an autoconf generated configure script.
+s/^\([/[:lower:]A-Z0-9]*_cv_[[:lower:][:upper:]/[:digit:]]*\)=\(.*\)/: \${\1='\2'}/p
diff --git a/src/sed/testsuite/cv-vars.good b/src/sed/testsuite/cv-vars.good
new file mode 100644
index 0000000..14707bf
--- /dev/null
+++ b/src/sed/testsuite/cv-vars.good
@@ -0,0 +1,4 @@
+: ${_cv_='emptyvar'}
+: ${ac_cv_prog_RANLIB='/usr/bin/ranlib'}
+: ${ac_cv_prog_CC='/usr/unsupported/\ \ /lib/_cv_/cc'}
+: ${ac_cv_prog_CPP='/usr/bin/cpp'}
diff --git a/src/sed/testsuite/cv-vars.inp b/src/sed/testsuite/cv-vars.inp
new file mode 100644
index 0000000..5e92b1c
--- /dev/null
+++ b/src/sed/testsuite/cv-vars.inp
@@ -0,0 +1,6 @@
+_cv_=emptyvar
+ac_cv_prog_RANLIB=/usr/bin/ranlib
+ac_cv_prog_CC=/usr/unsupported/\ \ /lib/_cv_/cc
+ac_cv_prog_CPP=/usr/bin/cpp
+SHELL=bash
+GNU=GNU!UNIX
diff --git a/src/sed/testsuite/cv-vars.sed b/src/sed/testsuite/cv-vars.sed
new file mode 100644
index 0000000..e49c73e
--- /dev/null
+++ b/src/sed/testsuite/cv-vars.sed
@@ -0,0 +1,2 @@
+# inspired by an autoconf generated configure script.
+s/^\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\)=\(.*\)/: \${\1='\2'}/p
diff --git a/src/sed/testsuite/dc.good b/src/sed/testsuite/dc.good
new file mode 100644
index 0000000..7604d56
--- /dev/null
+++ b/src/sed/testsuite/dc.good
@@ -0,0 +1,3 @@
+31
+March 2002
+1.6A09E667A
diff --git a/src/sed/testsuite/dc.inp b/src/sed/testsuite/dc.inp
new file mode 100644
index 0000000..e4b731b
--- /dev/null
+++ b/src/sed/testsuite/dc.inp
@@ -0,0 +1,14 @@
+# Compute Easter of 2002...
+# usage:   (echo YEAR; cat easter.dc) | dc
+
+2002
+
+[ddsf[lfp[too early
+]Pq]s@1583>@
+ddd19%1+sg100/1+d3*4/12-sx8*5+25/5-sz5*4/lx-10-sdlg11*20+lz+lx-30%
+d[30+]s@0>@d[[1+]s@lg11<@]s@25=@d[1+]s@24=@se44le-d[30+]s@21>@dld+7%-7+
+[March ]smd[31-[April ]sm]s@31<@psnlmPpsn1z>p]splpx
+
+# Compute square root of 2
+
+16oAk2vpq
\ No newline at end of file
diff --git a/src/sed/testsuite/dc.sed b/src/sed/testsuite/dc.sed
new file mode 100644
index 0000000..5267589
--- /dev/null
+++ b/src/sed/testsuite/dc.sed
@@ -0,0 +1,322 @@
+#!/bin/sed -nf
+#  dc.sed - an arbitrary precision RPN calculator
+#  Created by Greg Ubben <gsu@romulus.ncsc.mil> early 1995, late 1996
+#
+#  Dedicated to MAC's memory of the IBM 1620 ("CADET") computer.
+#  @(#)GSU dc.sed 1.1 06-Mar-1999 [non-explanatory]
+#
+#  Examples:
+#	sqrt(2) to 10 digits:	echo "10k 2vp" | dc.sed
+#	20 factorial:		echo "[d1-d1<!*]s! 20l!xp" | dc.sed
+#	sin(ln(7)):		echo "s(l(7))" | bc -c /usr/lib/lib.b | dc.sed
+#	hex to base 60:		echo "60o16i 6B407.CAFE p" | dc.sed
+#	tests most of dc.sed:	echo 16oAk2vp | dc.sed
+#
+#  To debug or analyze, give the dc Y command as input or add it to
+#  embedded dc routines, or add the sed p command to the beginning of
+#  the main loop or at various points in the low-level sed routines.
+#  If you need to allow [|~] characters in the input, filter this
+#  script through "tr '|~' '\36\37'" first (or use dc.pl).
+#
+#  Not implemented:	! \
+#  But implemented:	K Y t # !< !> != fractional-bases
+#  SunOS limits:	199/199 commands (though could pack in 10-20 more)
+#  Limitations:		scale <= 999; |obase| >= 1; input digits in [0..F]
+#  Completed:		1am Feb 4, 1997
+
+s/^/|P|K0|I10|O10|?~/
+
+: next
+s/|?./|?/
+s/|?#[	 -}]*/|?/
+/|?!*[lLsS;:<>=]\{0,1\}$/N
+/|?!*[-+*/%^<>=]/b binop
+/^|.*|?[dpPfQXZvxkiosStT;:]/b binop
+/|?[_0-9A-F.]/b number
+/|?\[/b string
+/|?l/b load
+/|?L/b Load
+/|?[sS]/b save
+/|?c/ s/[^|]*//
+/|?d/ s/[^~]*~/&&/
+/|?f/ s//&[pSbz0<aLb]dSaxsaLa/
+/|?x/ s/\([^~]*~\)\(.*|?x\)~*/\2\1/
+/|?[KIO]/ s/.*|\([KIO]\)\([^|]*\).*|?\1/\2~&/
+/|?T/ s/\.*0*~/~/
+#  a slow, non-stackable array implementation in dc, just for completeness
+#  A fast, stackable, associative array implementation could be done in sed
+#  (format: {key}value{key}value...), but would be longer, like load & save.
+/|?;/ s/|?;\([^{}]\)/|?~[s}s{L{s}q]S}[S}l\1L}1-d0>}s\1L\1l{xS\1]dS{xL}/
+/|?:/ s/|?:\([^{}]\)/|?~[s}L{s}L{s}L}s\1q]S}S}S{[L}1-d0>}S}l\1s\1L\1l{xS\1]dS{x/
+/|?[ ~	cdfxKIOT]/b next
+/|?\n/b next
+/|?[pP]/b print
+/|?k/ s/^\([0-9]\{1,3\}\)\([.~].*|K\)[^|]*/\2\1/
+/|?i/ s/^\(-\{0,1\}[0-9]*\.\{0,1\}[0-9]\{1,\}\)\(~.*|I\)[^|]*/\2\1/
+/|?o/ s/^\(-\{0,1\}[1-9][0-9]*\.\{0,1\}[0-9]*\)\(~.*|O\)[^|]*/\2\1/
+/|?[kio]/b pop
+/|?t/b trunc
+/|??/b input
+/|?Q/b break
+/|?q/b quit
+h
+/|?[XZz]/b count
+/|?v/b sqrt
+s/.*|?\([^Y]\).*/\1 is unimplemented/
+s/\n/\\n/g
+l
+g
+b next
+
+: print
+/^-\{0,1\}[0-9]*\.\{0,1\}[0-9]\{1,\}~.*|?p/!b Print
+/|O10|/b Print
+
+#  Print a number in a non-decimal output base.  Uses registers a,b,c,d.
+#  Handles fractional output bases (O<-1 or O>=1), unlike other dc's.
+#  Converts the fraction correctly on negative output bases, unlike
+#  UNIX dc.  Also scales the fraction more accurately than UNIX dc.
+#
+s,|?p,&KSa0kd[[-]Psa0la-]Sad0>a[0P]sad0=a[A*2+]saOtd0>a1-ZSd[[[[ ]P]sclb1\
+!=cSbLdlbtZ[[[-]P0lb-sb]sclb0>c1+]sclb0!<c[0P1+dld>c]scdld>cscSdLbP]q]Sb\
+[t[1P1-d0<c]scd0<c]ScO_1>bO1!<cO[16]<bOX0<b[[q]sc[dSbdA>c[A]sbdA=c[B]sbd\
+B=c[C]sbdC=c[D]sbdD=c[E]sbdE=c[F]sb]xscLbP]~Sd[dtdZOZ+k1O/Tdsb[.5]*[.1]O\
+X^*dZkdXK-1+ktsc0kdSb-[Lbdlb*lc+tdSbO*-lb0!=aldx]dsaxLbsb]sad1!>a[[.]POX\
++sb1[SbO*dtdldx-LbO*dZlb!<a]dsax]sadXd0<asbsasaLasbLbscLcsdLdsdLdLak[]pP,
+b next
+
+: Print
+/|?p/s/[^~]*/&\
+~&/
+s/\(.*|P\)\([^|]*\)/\
+\2\1/
+s/\([^~]*\)\n\([^~]*\)\(.*|P\)/\1\3\2/
+h
+s/~.*//
+/./{ s/.//; p; }
+#  Just s/.//p would work if we knew we were running under the -n option.
+#  Using l vs p would kind of do \ continuations, but would break strings.
+g
+
+: pop
+s/[^~]*~//
+b next
+
+: load
+s/\(.*|?.\)\(.\)/\20~\1/
+s/^\(.\)0\(.*|r\1\([^~|]*\)~\)/\1\3\2/
+s/.//
+b next
+
+: Load
+s/\(.*|?.\)\(.\)/\2\1/
+s/^\(.\)\(.*|r\1\)\([^~|]*~\)/|\3\2/
+/^|/!i\
+register empty
+s/.//
+b next
+
+: save
+s/\(.*|?.\)\(.\)/\2\1/
+/^\(.\).*|r\1/ !s/\(.\).*|/&r\1|/
+/|?S/ s/\(.\).*|r\1/&~/
+s/\(.\)\([^~]*~\)\(.*|r\1\)[^~|]*~\{0,1\}/\3\2/
+b next
+
+: quit
+t quit
+s/|?[^~]*~[^~]*~/|?q/
+t next
+#  Really should be using the -n option to avoid printing a final newline.
+s/.*|P\([^|]*\).*/\1/
+q
+
+: break
+s/[0-9]*/&;987654321009;/
+: break1
+s/^\([^;]*\)\([1-9]\)\(0*\)\([^1]*\2\(.\)[^;]*\3\(9*\).*|?.\)[^~]*~/\1\5\6\4/
+t break1
+b pop
+
+: input
+N
+s/|??\(.*\)\(\n.*\)/|?\2~\1/
+b next
+
+: count
+/|?Z/ s/~.*//
+/^-\{0,1\}[0-9]*\.\{0,1\}[0-9]\{1,\}$/ s/[-.0]*\([^.]*\)\.*/\1/
+/|?X/ s/-*[0-9A-F]*\.*\([0-9A-F]*\).*/\1/
+s/|.*//
+/~/ s/[^~]//g
+
+s/./a/g
+: count1
+	s/a\{10\}/b/g
+	s/b*a*/&a9876543210;/
+	s/a.\{9\}\(.\).*;/\1/
+	y/b/a/
+/a/b count1
+G
+/|?z/ s/\n/&~/
+s/\n[^~]*//
+b next
+
+: trunc
+#  for efficiency, doesn't pad with 0s, so 10k 2 5/ returns just .40
+#  The X* here and in a couple other places works around a SunOS 4.x sed bug.
+s/\([^.~]*\.*\)\(.*|K\([^|]*\)\)/\3;9876543210009909:\1,\2/
+: trunc1
+	s/^\([^;]*\)\([1-9]\)\(0*\)\([^1]*\2\(.\)[^:]*X*\3\(9*\)[^,]*\),\([0-9]\)/\1\5\6\4\7,/
+t trunc1
+s/[^:]*:\([^,]*\)[^~]*/\1/
+b normal
+
+: number
+s/\(.*|?\)\(_\{0,1\}[0-9A-F]*\.\{0,1\}[0-9A-F]*\)/\2~\1~/
+s/^_/-/
+/^[^A-F~]*~.*|I10|/b normal
+/^[-0.]*~/b normal
+s:\([^.~]*\)\.*\([^~]*\):[Ilb^lbk/,\1\2~0A1B2C3D4E5F1=11223344556677889900;.\2:
+: digit
+    s/^\([^,]*\),\(-*\)\([0-F]\)\([^;]*\(.\)\3[^1;]*\(1*\)\)/I*+\1\2\6\5~,\2\4/
+t digit
+s:...\([^/]*.\)\([^,]*\)[^.]*\(.*|?.\):\2\3KSb[99]k\1]SaSaXSbLalb0<aLakLbktLbk:
+b next
+
+: string
+/|?[^]]*$/N
+s/\(|?[^]]*\)\[\([^]]*\)]/\1|{\2|}/
+/|?\[/b string
+s/\(.*|?\)|{\(.*\)|}/\2~\1[/
+s/|{/[/g
+s/|}/]/g
+b next
+
+: binop
+/^[^~|]*~[^|]/ !i\
+stack empty
+//!b next
+/^-\{0,1\}[0-9]*\.\{0,1\}[0-9]\{1,\}~/ !s/[^~]*\(.*|?!*[^!=<>]\)/0\1/
+/^[^~]*~-\{0,1\}[0-9]*\.\{0,1\}[0-9]\{1,\}~/ !s/~[^~]*\(.*|?!*[^!=<>]\)/~0\1/
+h
+/|?\*/b mul
+/|?\//b div
+/|?%/b rem
+/|?^/b exp
+
+/|?[+-]/ s/^\(-*\)\([^~]*~\)\(-*\)\([^~]*~\).*|?\(-\{0,1\}\).*/\2\4s\3o\1\3\5/
+s/\([^.~]*\)\([^~]*~[^.~]*\)\(.*\)/<\1,\2,\3|=-~.0,123456789<></
+/^<\([^,]*,[^~]*\)\.*0*~\1\.*0*~/ s/</=/
+: cmp1
+	s/^\(<[^,]*\)\([0-9]\),\([^,]*\)\([0-9]\),/\1,\2\3,\4/
+t cmp1
+/^<\([^~]*\)\([^~]\)[^~]*~\1\(.\).*|=.*\3.*\2/ s/</>/
+/|?/{
+	s/^\([<>]\)\(-[^~]*~-.*\1\)\(.\)/\3\2/
+	s/^\(.\)\(.*|?!*\)\1/\2!\1/
+	s/|?![^!]\(.\)/&l\1x/
+	s/[^~]*~[^~]*~\(.*|?\)!*.\(.*\)|=.*/\1\2/
+	b next
+}
+s/\(-*\)\1|=.*/;9876543210;9876543210/
+/o-/ s/;9876543210/;0123456789/
+s/^>\([^~]*~\)\([^~]*~\)s\(-*\)\(-*o\3\(-*\)\)/>\2\1s\5\4/
+
+s/,\([0-9]*\)\.*\([^,]*\),\([0-9]*\)\.*\([0-9]*\)/\1,\2\3.,\4;0/
+: right1
+	s/,\([0-9]\)\([^,]*\),;*\([0-9]\)\([0-9]*\);*0*/\1,\2\3,\4;0/
+t right1
+s/.\([^,]*\),~\(.*\);0~s\(-*\)o-*/\1~\30\2~/
+
+: addsub1
+	s/\(.\{0,1\}\)\(~[^,]*\)\([0-9]\)\(\.*\),\([^;]*\)\(;\([^;]*\(\3[^;]*\)\).*X*\1\(.*\)\)/\2,\4\5\9\8\7\6/
+	s/,\([^~]*~\).\{10\}\(.\)[^;]\{0,9\}\([^;]\{0,1\}\)[^;]*/,\2\1\3/
+#	  could be done in one s/// if we could have >9 back-refs...
+/^~.*~;/!b addsub1
+
+: endbin
+s/.\([^,]*\),\([0-9.]*\).*/\1\2/
+G
+s/\n[^~]*~[^~]*//
+
+: normal
+s/^\(-*\)0*\([0-9.]*[0-9]\)[^~]*/\1\2/
+s/^[^1-9~]*~/0~/
+b next
+
+: mul
+s/\(-*\)\([0-9]*\)\.*\([0-9]*\)~\(-*\)\([0-9]*\)\.*\([0-9]*\).*|K\([^|]*\).*/\1\4\2\5.!\3\6,|\2<\3~\5>\6:\7;9876543210009909/
+
+: mul1
+    s/![0-9]\([^<]*\)<\([0-9]\{0,1\}\)\([^>]*\)>\([0-9]\{0,1\}\)/0!\1\2<\3\4>/
+    /![0-9]/ s/\(:[^;]*\)\([1-9]\)\(0*\)\([^0]*\2\(.\).*X*\3\(9*\)\)/\1\5\6\4/
+/<~[^>]*>:0*;/!t mul1
+
+s/\(-*\)\1\([^>]*\).*/;\2^>:9876543210aaaaaaaaa/
+
+: mul2
+    s/\([0-9]~*\)^/^\1/
+    s/<\([0-9]*\)\(.*[~^]\)\([0-9]*\)>/\1<\2>\3/
+
+    : mul3
+	s/>\([0-9]\)\(.*\1.\{9\}\(a*\)\)/\1>\2;9\38\37\36\35\34\33\32\31\30/
+	s/\(;[^<]*\)\([0-9]\)<\([^;]*\).*\2[0-9]*\(.*\)/\4\1<\2\3/
+	s/a[0-9]/a/g
+	s/a\{10\}/b/g
+	s/b\{10\}/c/g
+    /|0*[1-9][^>]*>0*[1-9]/b mul3
+
+    s/;/a9876543210;/
+    s/a.\{9\}\(.\)[^;]*\([^,]*\)[0-9]\([.!]*\),/\2,\1\3/
+    y/cb/ba/
+/|<^/!b mul2
+b endbin
+
+: div
+#  CDDET
+/^[-.0]*[1-9]/ !i\
+divide by 0
+//!b pop
+s/\(-*\)\([0-9]*\)\.*\([^~]*~-*\)\([0-9]*\)\.*\([^~]*\)/\2.\3\1;0\4.\5;0/
+: div1
+	s/^\.0\([^.]*\)\.;*\([0-9]\)\([0-9]*\);*0*/.\1\2.\3;0/
+	s/^\([^.]*\)\([0-9]\)\.\([^;]*;\)0*\([0-9]*\)\([0-9]\)\./\1.\2\30\4.\5/
+t div1
+s/~\(-*\)\1\(-*\);0*\([^;]*[0-9]\)[^~]*/~123456789743222111~\2\3/
+s/\(.\(.\)[^~]*\)[^9]*\2.\{8\}\(.\)[^~]*/\3~\1/
+s,|?.,&SaSadSaKdlaZ+LaX-1+[sb1]Sbd1>bkLatsbLa[dSa2lbla*-*dLa!=a]dSaxsakLasbLb*t,
+b next
+
+: rem
+s,|?%,&Sadla/LaKSa[999]k*Lak-,
+b next
+
+: exp
+#  This decimal method is just a little faster than the binary method done
+#  totally in dc:  1LaKLb [kdSb*LbK]Sb [[.5]*d0ktdSa<bkd*KLad1<a]Sa d1<a kk*
+/^[^~]*\./i\
+fraction in exponent ignored
+s,[^-0-9].*,;9d**dd*8*d*d7dd**d*6d**d5d*d*4*d3d*2lbd**1lb*0,
+: exp1
+	s/\([0-9]\);\(.*\1\([d*]*\)[^l]*\([^*]*\)\(\**\)\)/;dd*d**d*\4\3\5\2/
+t exp1
+G
+s,-*.\{9\}\([^9]*\)[^0]*0.\(.*|?.\),\2~saSaKdsaLb0kLbkK*+k1\1LaktsbkLax,
+s,|?.,&SadSbdXSaZla-SbKLaLadSb[0Lb-d1lb-*d+K+0kkSb[1Lb/]q]Sa0>a[dk]sadK<a[Lb],
+b next
+
+: sqrt
+#  first square root using sed:  8k2v at 1:30am Dec 17, 1996
+/^-/i\
+square root of negative number
+/^[-0]/b next
+s/~.*//
+/^\./ s/0\([0-9]\)/\1/g
+/^\./ !s/[0-9][0-9]/7/g
+G
+s/\n/~/
+s,|?.,&K1+k KSbSb[dk]SadXdK<asadlb/lb+[.5]*[sbdlb/lb+[.5]*dlb>a]dsaxsasaLbsaLatLbk K1-kt,
+b next
+
+#  END OF GSU dc.sed
diff --git a/src/sed/testsuite/distrib.good b/src/sed/testsuite/distrib.good
new file mode 100644
index 0000000..a6a8426
--- /dev/null
+++ b/src/sed/testsuite/distrib.good
@@ -0,0 +1,29 @@
+Path: mailnewsgateway
+From crash@cygnus.com  Wed Mar  8 18: 02:42 1995
+From: crash@cygnus.com (Jason Molenda)
+Message-ID: <9503090202.AA06931.alt.buddha.fat.short.guy@phydeaux.cygnus.com>
+Subject: Note for sed testsuite
+Original-To: molenda@msi.umn.edu
+Date: Wed, 8 Mar 1995 18:02:24 -0800 (PST)
+X-Mailer: ELM [version 2.4 PL23]
+Newsgroups: alt.buddha.short.fat.guy
+Distribution: world
+Sender: news@cygnus.com
+Approved: alt.buddha.short.fat.guy@cygnus.com
+
+                _Summum Bonum_
+
+    All the breath and the bloom of the
+            year in the bag of one bee:
+    All the wonder and wealth of the mine in
+         the heart of one gem:
+    In the core of one pearl all the shade and the
+           shine of the sea:
+    Breath and bloom, shade and shine, -- wonder,
+        wealth, and -- how far above them --
+          Truth, thats brighter than gem,
+          Trust, that's purer than pearl, --
+    Brightest truth, purest trust in the universe --
+              all were for me
+                 In the kiss of one girl.
+        -- Robert Browning
diff --git a/src/sed/testsuite/distrib.inp b/src/sed/testsuite/distrib.inp
new file mode 100644
index 0000000..ceaecec
--- /dev/null
+++ b/src/sed/testsuite/distrib.inp
@@ -0,0 +1,28 @@
+From crash@cygnus.com  Wed Mar  8 18:02:42 1995
+Received: from s1.msi.umn.edu (s1.msi.umn.edu [128.101.24.1]) by cygnus.com (8.6.9/8.6.9) with ESMTP id SAA21692 for <crash@cygnus.com>; Wed, 8 Mar 1995 18:02:41 -0800
+Received: from cygint.cygnus.com (cygint.cygnus.com [140.174.1.1]) by s1.msi.umn.edu (8.6.10/8.6.9) with ESMTP id TAA13398 for <molenda@msi.umn.edu>; Wed, 8 Mar 1995 19:59:18 -0600
+Received: from phydeaux.cygnus.com (phydeaux.cygnus.com [140.174.1.85]) by cygnus.com (8.6.9/8.6.9) with SMTP id SAA21688 for <molenda@msi.umn.edu>; Wed, 8 Mar 1995 18:02:33 -0800
+From: Jason Molenda <crash@cygnus.com>
+Received: by phydeaux.cygnus.com (5.65/4.7) id AA06931; Wed, 8 Mar 1995 18:02:28 -0800
+Message-Id: <9503090202.AA06931@phydeaux.cygnus.com>
+Subject: Note for sed testsuite
+To: molenda@msi.umn.edu
+Date: Wed, 8 Mar 1995 18:02:24 -0800 (PST)
+X-Mailer: ELM [version 2.4 PL23]
+
+                _Summum Bonum_
+
+    All the breath and the bloom of the
+            year in the bag of one bee:
+    All the wonder and wealth of the mine in
+         the heart of one gem:
+    In the core of one pearl all the shade and the
+           shine of the sea:
+    Breath and bloom, shade and shine, -- wonder,
+        wealth, and -- how far above them --
+          Truth, thats brighter than gem,
+          Trust, that's purer than pearl, --
+    Brightest truth, purest trust in the universe --
+              all were for me
+                 In the kiss of one girl.
+        -- Robert Browning
diff --git a/src/sed/testsuite/distrib.sed b/src/sed/testsuite/distrib.sed
new file mode 100644
index 0000000..918b30f
--- /dev/null
+++ b/src/sed/testsuite/distrib.sed
@@ -0,0 +1,56 @@
+#   This is straight out of C News
+#
+#
+# All this does is massage the headers so they look like what news
+# software expects.  To:, Cc: and Resent-*: headers are masked.
+# Reply-To: is turned into references, which is questionable (could
+# just as well be dropped.
+#
+# The From: line is rewritten to use the "address (comments)" form
+# instead of "phrase <route>" form our mailer uses.  Also, addresses
+# with no "@domainname" are assumed to originate locally, and so are
+# given a domain.
+#
+# The Sender: field below reflects the address of the person who
+# maintains our mailing lists.  The Approved: field is in a special
+# form, so that we can do bidirectional gatewaying.  Any message
+# in a newsgroup that bears this stamp will not be fed into the
+# matching mailing list.
+
+1i\
+Path: mailnewsgateway
+	:a
+	/^[Rr]eceived:/b r
+	/^[Nn]ewsgroups:/b r
+	/^[Pp]ath:/b r
+	/^[Tt][Oo]:/s/^/Original-/
+	/^[Cc][Cc]:/s/^/Original-/
+	/^[Rr][Ee][Ss][Ee][Nn][Tt]-.*/s/^/Original-/
+	/^[Mm][Ee][Ss][Ss][Aa][Gg][Ee]-[Ii][Dd]:/s/@/.alt.buddha.fat.short.guy@/
+	s/^[Ii]n-[Rr]eply-[Tt]o:/References:/
+	/^From:/{
+		s/<\([^@]*\)>$/<\1@$thissite>/
+		s/^From:[ 	][	]*\(.*\)  *<\(.*\)>$/From: \2 (\1)/
+		}
+	s/-[Ii]d:/-ID:/
+	s/^[Ss][Uu][Bb][Jj][Ee][Cc][Tt]:[ 	]*$/Subject: (none)/
+	s/^\([^:]*:\)[	 ]*/\1 /
+	/^$/{i\
+Newsgroups: alt.buddha.short.fat.guy\
+Distribution: world\
+Sender: news@cygnus.com\
+Approved: alt.buddha.short.fat.guy@cygnus.com
+	b e
+	}
+	p
+	n
+	b a
+	:r
+	s/.*//g
+	n
+	/^[ 	]/b r
+	b a
+	:e
+	p
+	n
+	b e
diff --git a/src/sed/testsuite/distrib.sh b/src/sed/testsuite/distrib.sh
new file mode 100644
index 0000000..dbadbdc
--- /dev/null
+++ b/src/sed/testsuite/distrib.sh
@@ -0,0 +1,63 @@
+#! /bin/sh
+#
+#   This is stolen from C News
+# 
+
+
+#
+# All this does is massage the headers so they look like what news
+# software expects.  To:, Cc: and Resent-*: headers are masked.
+# Reply-To: is turned into references, which is questionable (could
+# just as well be dropped.
+#
+# The From: line is rewritten to use the "address (comments)" form
+# instead of "phrase <route>" form our mailer uses.  Also, addresses
+# with no "@domainname" are assumed to originate locally, and so are
+# given a domain.
+#
+# The Sender: field below reflects the address of the person who
+# maintains our mailing lists.  The Approved: field is in a special
+# form, so that we can do bidirectional gatewaying.  Any message
+# in a newsgroup that bears this stamp will not be fed into the
+# matching mailing list.
+
+sed=${1-sed}
+
+$sed -n -e "1{i\\
+Path: mailnewsgateway
+	}" \
+    -e ":a
+	/^[Rr]eceived:/b r
+	/^[Nn]ewsgroups:/b r
+	/^[Pp]ath:/b r
+	/^[Tt][Oo]:/s/^/Original-/
+	/^[Cc][Cc]:/s/^/Original-/
+	/^[Rr][Ee][Ss][Ee][Nn][Tt]-.*/s/^/Original-/
+	/^[Mm][Ee][Ss][Ss][Aa][Gg][Ee]-[Ii][Dd]:/s/@/.alt.buddha.fat.short.guy@/
+	s/^[Ii]n-[Rr]eply-[Tt]o:/References:/
+	/^From:/{
+		s/<\([^@]*\)>\$/<\1@$thissite>/
+		s/^From:[ 	][	]*\(.*\)  *<\(.*\)>\$/From: \2 (\1)/
+		}
+	s/-[Ii]d:/-ID:/
+	s/^[Ss][Uu][Bb][Jj][Ee][Cc][Tt]:[ 	]*$/Subject: (none)/
+	s/^\([^:]*:\)[	 ]*/\1 /
+	/^\$/{i\\
+Newsgroups: alt.buddha.short.fat.guy\\
+Distribution: world\\
+Sender: news@cygnus.com\\
+Approved: alt.buddha.short.fat.guy@cygnus.com
+	b e
+	}
+	p
+	n
+	b a
+	:r
+	s/.*//g
+	n
+	/^[ 	]/b r
+	b a
+	:e
+	p
+	n
+	b e"
diff --git a/src/sed/testsuite/dollar.good b/src/sed/testsuite/dollar.good
new file mode 100644
index 0000000..23e072a
--- /dev/null
+++ b/src/sed/testsuite/dollar.good
@@ -0,0 +1,4 @@
+I can't quite remember where I heard it,
+but I can't seem to get out of my head
+the phrase
+space the final frontier
diff --git a/src/sed/testsuite/dollar.inp b/src/sed/testsuite/dollar.inp
new file mode 100644
index 0000000..9267e98
--- /dev/null
+++ b/src/sed/testsuite/dollar.inp
@@ -0,0 +1,4 @@
+I can't quite remember where I heard it,
+but I can't seem to get out of my head
+the phrase
+the final frontier
diff --git a/src/sed/testsuite/dollar.sed b/src/sed/testsuite/dollar.sed
new file mode 100644
index 0000000..5fbb35c
--- /dev/null
+++ b/src/sed/testsuite/dollar.sed
@@ -0,0 +1 @@
+$s/^/space /
diff --git a/src/sed/testsuite/empty.good b/src/sed/testsuite/empty.good
new file mode 100644
index 0000000..07e1a15
--- /dev/null
+++ b/src/sed/testsuite/empty.good
@@ -0,0 +1,2 @@
+x
+
diff --git a/src/sed/testsuite/empty.inp b/src/sed/testsuite/empty.inp
new file mode 100644
index 0000000..07e1a15
--- /dev/null
+++ b/src/sed/testsuite/empty.inp
@@ -0,0 +1,2 @@
+x
+
diff --git a/src/sed/testsuite/empty.sed b/src/sed/testsuite/empty.sed
new file mode 100644
index 0000000..b35aed6
--- /dev/null
+++ b/src/sed/testsuite/empty.sed
@@ -0,0 +1 @@
+s/^ *//
diff --git a/src/sed/testsuite/enable.good b/src/sed/testsuite/enable.good
new file mode 100644
index 0000000..c6588ba
--- /dev/null
+++ b/src/sed/testsuite/enable.good
@@ -0,0 +1,3 @@
+targets
+x11-testing
+wollybears-in-minnesota
diff --git a/src/sed/testsuite/enable.inp b/src/sed/testsuite/enable.inp
new file mode 100644
index 0000000..4509a8d
--- /dev/null
+++ b/src/sed/testsuite/enable.inp
@@ -0,0 +1,3 @@
+--enable-targets=sparc-sun-sunos4.1.3,srec
+--enable-x11-testing=on
+--enable-wollybears-in-minnesota=yes-id-like-that
diff --git a/src/sed/testsuite/enable.sed b/src/sed/testsuite/enable.sed
new file mode 100644
index 0000000..0d2a208
--- /dev/null
+++ b/src/sed/testsuite/enable.sed
@@ -0,0 +1,2 @@
+# inspired by an autoconf generated configure script.
+s/-*enable-//;s/=.*//
diff --git a/src/sed/testsuite/eval.good b/src/sed/testsuite/eval.good
new file mode 100644
index 0000000..6fd021b
--- /dev/null
+++ b/src/sed/testsuite/eval.good
@@ -0,0 +1,40 @@
+abcd
+---
+abcd
+---
+abcd
+---
+17380: 2 2 5 11 79
+cpu
+---
+17380: 2 2 5 11 79
+cpu
+---
+17380: 2 2 5 11 79
+cpu
+---
+  abcd  
+---
+  abcd  
+---
+  abcd  
+---
+17380: 2 2 5 11 79
+  cpu  
+---
+17380: 2 2 5 11 79
+  cpu  
+---
+17380: 2 2 5 11 79
+  cpu  
+---
+Doing some more tests -----------------------
+17380: 2 2 5 11 79
+---
+../sed/sed 1q eval.in2
+---
+17380: 2 2 5 11 79
+---
+../sed/sed 1q eval.in2
+---
+../sed/sed 1q eval.in2
diff --git a/src/sed/testsuite/eval.inp b/src/sed/testsuite/eval.inp
new file mode 100644
index 0000000..4e30989
--- /dev/null
+++ b/src/sed/testsuite/eval.inp
@@ -0,0 +1,5 @@
+17380: 2 2 5 11 79
+abcd
+cpu
+  abcd  
+  cpu  
diff --git a/src/sed/testsuite/eval.sed b/src/sed/testsuite/eval.sed
new file mode 100644
index 0000000..5734786
--- /dev/null
+++ b/src/sed/testsuite/eval.sed
@@ -0,0 +1,46 @@
+1d
+
+	#Try eval command
+	/cpu/!b2
+	e../sed/sed 1q eval.in2
+
+:2
+p
+i---
+h
+
+	#Try eval option
+	s,.* *cpu *,../sed/sed 1q eval.in2; echo "&",e
+
+:3
+p
+g
+i---
+
+	h
+	#Try eval option with print
+	s,.* *cpu.*,../sed/sed 1q eval.in2,ep
+	g
+
+
+:4
+p
+i---
+
+$!d
+
+#Do some more tests
+s/.*/Doing some more tests -----------------------/p
+s,.*,../sed/sed 1q eval.in2,ep
+i---
+s,.*,../sed/sed 1q eval.in2,pe
+i---
+s,.*,../sed/sed 1q eval.in2,
+h
+e
+p
+g
+i---
+s/^/echo /ep
+i---
+s/^fubar$/echo wozthis/e
diff --git a/src/sed/testsuite/factor.good b/src/sed/testsuite/factor.good
new file mode 100644
index 0000000..c703182
--- /dev/null
+++ b/src/sed/testsuite/factor.good
@@ -0,0 +1,15 @@
+2
+3
+2
+2
+5
+2
+2
+2
+11
+2
+2
+2
+2
+13
+11
diff --git a/src/sed/testsuite/factor.inp b/src/sed/testsuite/factor.inp
new file mode 100644
index 0000000..1c2e796
--- /dev/null
+++ b/src/sed/testsuite/factor.inp
@@ -0,0 +1,8 @@
+2
+3
+4
+5
+8
+11
+16
+143
diff --git a/src/sed/testsuite/factor.sed b/src/sed/testsuite/factor.sed
new file mode 100644
index 0000000..4416e35
--- /dev/null
+++ b/src/sed/testsuite/factor.sed
@@ -0,0 +1,76 @@
+#! /bin/sed -nf
+
+s/.*/&;9aaaaaaaaa8aaaaaaaa7aaaaaaa6aaaaaa5aaaaa4aaaa3aaa2aa1a0/
+:encode
+s/\(a*\)\([0-9]\)\([0-9]*;.*\2\(a*\)\)/\1\1\1\1\1\1\1\1\1\1\4\3/
+tencode
+s/;.*//
+
+# Compute a few common factors for speed.  Clear the subst flag
+t7a
+
+# These are placed here to make the flow harder to understand :-)
+:2
+a\
+2
+b2a
+:3
+a\
+3
+b3a
+:5
+a\
+5
+b5a
+:7
+a\
+7
+
+:7a
+s/^\(aa*\)\1\{6\}$/\1/
+t7
+:5a
+s/^\(aa*\)\1\{4\}$/\1/
+t5
+:3a
+s/^\(aa*\)\1\1$/\1/
+t3
+:2a
+s/^\(aa*\)\1$/\1/
+t2
+
+/^a$/b
+
+# The quotient of dividing by 11 is a limit to the remaining prime factors
+s/^\(aa*\)\1\{10\}/\1=&/
+
+# Pattern space looks like CANDIDATE\nNUMBER.  When a candidate is valid,
+# the number is divided and the candidate is tried again
+:factor
+/^\(a\{7,\}\)=\1\1*$/! {
+  # Decrement CANDIDATE, and search again if it is still >1
+  s/^a//
+  /^aa/b factor
+
+  # Print the last remaining factor: since it is stored in the NUMBER
+  # rather than in the CANDIDATE, swap 'em: now NUMBER=1
+  s/\(.*\)=\(.*\)/\2=\1/
+}
+
+# We have a prime factor in CANDIDATE! Print it
+h
+s/=.*/;;0a1aa2aaa3aaaa4aaaaa5aaaaaa6aaaaaaa7aaaaaaaa8aaaaaaaaa9/
+
+:decode
+s/^\(a*\)\1\{9\}\(a\{0,9\}\)\([0-9]*;.*[^a]\2\([0-9]\)\)/\1\4\3/
+/^a/tdecode
+s/;.*//p
+
+g
+:divide
+s/^\(a*\)\(=b*\)\1/\1\2b/
+tdivide
+y/b/a/
+
+# If NUMBER = 1, we don't have any more factors
+/aa$/bfactor
diff --git a/src/sed/testsuite/fasts.good b/src/sed/testsuite/fasts.good
new file mode 100644
index 0000000..d1c7e4a
--- /dev/null
+++ b/src/sed/testsuite/fasts.good
@@ -0,0 +1,14 @@
+aaaaaabbbbbbaaaaaaa
+bbbbbb
+aaaaaabbbbbbaaaaaaa
+aaaaaabbbbbbaaaaaaa
+aaaaaaabbbbbbaaaaaaa
+aaaaaabbbbbbaaaaaaa
+aaaaaaabbbbbbaaaaaa
+bbbbbbbbbbbbbbbbbbb
+
+bbbbbbbbbbbbbbbbbbb
+bbbbbbbbbbbbbbbbbbb
+bbbbbbbbbbbbbbbbbbb
+bbbbbbbbbbbbbbbbbbb
+bbbbbbbbbbbbbbbbbbbb
diff --git a/src/sed/testsuite/fasts.inp b/src/sed/testsuite/fasts.inp
new file mode 100644
index 0000000..361e17b
--- /dev/null
+++ b/src/sed/testsuite/fasts.inp
@@ -0,0 +1 @@
+aaaaaaabbbbbbaaaaaaa
diff --git a/src/sed/testsuite/fasts.sed b/src/sed/testsuite/fasts.sed
new file mode 100644
index 0000000..5e482f7
--- /dev/null
+++ b/src/sed/testsuite/fasts.sed
@@ -0,0 +1,46 @@
+# test `fast' substitutions
+
+h
+s/a//
+p
+g
+s/a//g
+p
+g
+s/^a//p
+g
+s/^a//g
+p
+g
+s/not present//g
+p
+g
+s/^[a-z]//g
+p
+g
+s/a$//
+p
+g
+
+y/a/b/
+h
+s/b//
+p
+g
+s/b//g
+p
+g
+s/^b//p
+g
+s/^b//g
+p
+g
+s/^[a-z]//g
+p
+g
+s/b$//
+p
+g
+
+
+
diff --git a/src/sed/testsuite/flipcase.good b/src/sed/testsuite/flipcase.good
new file mode 100644
index 0000000..9fcffa2
--- /dev/null
+++ b/src/sed/testsuite/flipcase.good
@@ -0,0 +1,25 @@
+09 - 02 - 2002 00.00 Tg La7 La7 -
+09 - 02 - 2002 00.00 Brand New Tmc 2 -
+09 - 02 - 2002 00.10 Tg1 Notte Rai Uno -
+09 - 02 - 2002 00.15 Tg Parlamento Rai Due -
+09 - 02 - 2002 00.15 Kung Fu - La Leggenda Continua La7 -
+09 - 02 - 2002 00.20 Berserk - La Confessione Di Gatz Italia 1 Cartoon
+09 - 02 - 2002 00.20 Tg3 - Tg3 Meteo Rai Tre -
+09 - 02 - 2002 00.25 Meteo 2 Rai Due -
+09 - 02 - 2002 00.30 Appuntamento Al Cinema Rai Due -
+09 - 02 - 2002 00.30 Rai Educational - Mediamente Rai Tre -
+09 - 02 - 2002 00.35 Profiler Rai Due -
+09 - 02 - 2002 00.35 Stampa Oggi - Che Tempo Fa Rai Uno -
+09 - 02 - 2002 00.45 Rai Educational - Babele: Euro Rai Uno -
+09 - 02 - 2002 00.45 Bollettino Della Neve Rete 4 News
+09 - 02 - 2002 00.50 Studio Aperto - La Giornata Italia 1 News
+09 - 02 - 2002 00.50 Bocca A Bocca - 2 Tempo Rete 4 Film
+09 - 02 - 2002 01.00 Appuntamento Al Cinema Rai Tre -
+09 - 02 - 2002 01.00 Music Non Stop Tmc 2 -
+09 - 02 - 2002 01.00 Studio Sport Italia 1 Sport
+09 - 02 - 2002 01.00 Tg 5 - Notte Canale 5 News
+09 - 02 - 2002 01.05 Fuori Orario. Cose (Mai) Viste Rai Tre -
+09 - 02 - 2002 01.15 Rainotte Rai Due -
+09 - 02 - 2002 01.15 Sottovoce Rai Uno -
+09 - 02 - 2002 01.15 Giochi Olimpici Invernali - Cerimonia Di Apertura Rai Tre -
+09 - 02 - 2002 01.17 Italia Interroga Rai Due -
diff --git a/src/sed/testsuite/flipcase.inp b/src/sed/testsuite/flipcase.inp
new file mode 100644
index 0000000..f91ec11
--- /dev/null
+++ b/src/sed/testsuite/flipcase.inp
@@ -0,0 +1,25 @@
+09 - 02 - 2002 00.00 Tg La7 La7 -
+09 - 02 - 2002 00.00 Brand New Tmc 2 -
+09 - 02 - 2002 00.10 Tg1 Notte Rai Uno -
+09 - 02 - 2002 00.15 Tg Parlamento Rai Due -
+09 - 02 - 2002 00.15 Kung Fu - La Leggenda Continua La7 -
+09 - 02 - 2002 00.20 Berserk - La CoNFESSIONE Di Gatz Italia 1 Cartoon
+09 - 02 - 2002 00.20 Tg3 - Tg3 Meteo Rai TrE -
+09 - 02 - 2002 00.25 Meteo 2 Rai Due -
+09 - 02 - 2002 00.30 Appuntamento Al CinEMA RaI Due -
+09 - 02 - 2002 00.30 Rai Educational - Mediamente Rai Tre -
+09 - 02 - 2002 00.35 Profiler Rai Due -
+09 - 02 - 2002 00.35 Stampa OggI - Che Tempo Fa Rai Uno -
+09 - 02 - 2002 00.45 Rai Educational - Babele: Euro Rai Uno -
+09 - 02 - 2002 00.45 BollettINO Della NEVE RETE 4 News
+09 - 02 - 2002 00.50 STUDIO Aperto - La Giornata Italia 1 News
+09 - 02 - 2002 00.50 BOCCA A Bocca - 2 Tempo Rete 4 Film
+09 - 02 - 2002 01.00 AppuntAMENTO Al Cinema Rai Tre -
+09 - 02 - 2002 01.00 Music NoN Stop Tmc 2 -
+09 - 02 - 2002 01.00 Studio SpORT Italia 1 SporT
+09 - 02 - 2002 01.00 Tg 5 - Notte Canale 5 News
+09 - 02 - 2002 01.05 Fuori Orario. CosE (Mai) Viste Rai Tre -
+09 - 02 - 2002 01.15 RAINOTTE Rai Due -
+09 - 02 - 2002 01.15 Sottovoce Rai Uno -
+09 - 02 - 2002 01.15 GiOCHI Olimpici InVERNALI - CERIMONIA Di Apertura Rai Tre -
+09 - 02 - 2002 01.17 Italia Interroga Rai Due -
diff --git a/src/sed/testsuite/flipcase.sed b/src/sed/testsuite/flipcase.sed
new file mode 100644
index 0000000..211d0d0
--- /dev/null
+++ b/src/sed/testsuite/flipcase.sed
@@ -0,0 +1 @@
+s,\([^A-Za-z]*\)\([A-Za-z]*\),\1\L\u\2,g
\ No newline at end of file
diff --git a/src/sed/testsuite/head.good b/src/sed/testsuite/head.good
new file mode 100644
index 0000000..6392831
--- /dev/null
+++ b/src/sed/testsuite/head.good
@@ -0,0 +1,3 @@
+   "...by imposing a tiny bit of order in a communication you are
+   translating, you are carving out a little bit of order in the
+   universe.  You will never succeed.  Everything will fail and come
diff --git a/src/sed/testsuite/head.inp b/src/sed/testsuite/head.inp
new file mode 100644
index 0000000..5c4b4a4
--- /dev/null
+++ b/src/sed/testsuite/head.inp
@@ -0,0 +1,9 @@
+   "...by imposing a tiny bit of order in a communication you are
+   translating, you are carving out a little bit of order in the
+   universe.  You will never succeed.  Everything will fail and come
+   to an end finally.  But you have a chance to carve a little bit
+   of order and maybe even beauty out of the raw materials that
+   surround you everywhere, and I think there is no greater meaning
+   in life."
+
+             Donald L. Philippi, Oct 1930 - Jan 1993
diff --git a/src/sed/testsuite/head.sed b/src/sed/testsuite/head.sed
new file mode 100644
index 0000000..d8ea37d
--- /dev/null
+++ b/src/sed/testsuite/head.sed
@@ -0,0 +1 @@
+3q
diff --git a/src/sed/testsuite/inclib.good b/src/sed/testsuite/inclib.good
new file mode 100644
index 0000000..6b1279a
--- /dev/null
+++ b/src/sed/testsuite/inclib.good
@@ -0,0 +1,34 @@
+	/usr/X11R6/include        
+	/usr/X11R5/include        
+	/usr/X11R4/include        
+	
+	/usr/include/X11R6        
+	/usr/include/X11R5        
+	/usr/include/X11R4        
+	
+	/usr/local/X11R6/include  
+	/usr/local/X11R5/include  
+	/usr/local/X11R4/include  
+	
+	/usr/local/include/X11R6  
+	/usr/local/include/X11R5  
+	/usr/local/include/X11R4  
+	
+	/usr/X11/include          
+	/usr/include/X11          
+	/usr/local/X11/include    
+	/usr/local/include/X11    
+	
+	/usr/X386/include         
+	/usr/x386/include         
+	/usr/XFree86/include/X11  
+	
+	/usr/include              
+	/usr/local/include        
+	/usr/unsupported/include  
+	/usr/athena/include       
+	/usr/local/x11r5/include  
+	/usr/lpp/Xamples/include  
+	
+	/usr/openwin/include      
+	/usr/openwin/share/include 
diff --git a/src/sed/testsuite/inclib.inp b/src/sed/testsuite/inclib.inp
new file mode 100644
index 0000000..552e9e2
--- /dev/null
+++ b/src/sed/testsuite/inclib.inp
@@ -0,0 +1,34 @@
+	/usr/X11R6/lib        
+	/usr/X11R5/lib        
+	/usr/X11R4/lib        
+	
+	/usr/lib/X11R6        
+	/usr/lib/X11R5        
+	/usr/lib/X11R4        
+	
+	/usr/local/X11R6/lib  
+	/usr/local/X11R5/lib  
+	/usr/local/X11R4/lib  
+	
+	/usr/local/lib/X11R6  
+	/usr/local/lib/X11R5  
+	/usr/local/lib/X11R4  
+	
+	/usr/X11/lib          
+	/usr/lib/X11          
+	/usr/local/X11/lib    
+	/usr/local/lib/X11    
+	
+	/usr/X386/lib         
+	/usr/x386/lib         
+	/usr/XFree86/lib/X11  
+	
+	/usr/lib              
+	/usr/local/lib        
+	/usr/unsupported/lib  
+	/usr/athena/lib       
+	/usr/local/x11r5/lib  
+	/usr/lpp/Xamples/lib  
+	
+	/usr/openwin/lib      
+	/usr/openwin/share/lib 
diff --git a/src/sed/testsuite/inclib.sed b/src/sed/testsuite/inclib.sed
new file mode 100644
index 0000000..528f158
--- /dev/null
+++ b/src/sed/testsuite/inclib.sed
@@ -0,0 +1,2 @@
+# inspired by an autoconf generated configure script.
+s;lib;include;
diff --git a/src/sed/testsuite/insens.good b/src/sed/testsuite/insens.good
new file mode 100644
index 0000000..6fd1bc1
--- /dev/null
+++ b/src/sed/testsuite/insens.good
@@ -0,0 +1,2 @@
+1.2.3
+1.2.3
diff --git a/src/sed/testsuite/insens.inp b/src/sed/testsuite/insens.inp
new file mode 100644
index 0000000..baefc12
--- /dev/null
+++ b/src/sed/testsuite/insens.inp
@@ -0,0 +1 @@
+Version: 1.2.3
diff --git a/src/sed/testsuite/insens.sed b/src/sed/testsuite/insens.sed
new file mode 100644
index 0000000..afab9fa
--- /dev/null
+++ b/src/sed/testsuite/insens.sed
@@ -0,0 +1,4 @@
+h
+s/Version: *//p
+g
+s/version: *//Ip
diff --git a/src/sed/testsuite/khadafy.good b/src/sed/testsuite/khadafy.good
new file mode 100644
index 0000000..e719f4e
--- /dev/null
+++ b/src/sed/testsuite/khadafy.good
@@ -0,0 +1,32 @@
+1)  Muammar Qaddafi
+2)  Mo'ammar Gadhafi
+3)  Muammar Kaddafi
+4)  Muammar Qadhafi
+5)  Moammar El Kadhafi
+6)  Muammar Gadafi
+7)  Mu'ammar al-Qadafi
+8)  Moamer El Kazzafi
+9)  Moamar al-Gaddafi
+10) Mu'ammar Al Qathafi
+11) Muammar Al Qathafi
+12) Mo'ammar el-Gadhafi
+13) Moamar El Kadhafi
+14) Muammar al-Qadhafi
+15) Mu'ammar al-Qadhdhafi
+16) Mu'ammar Qadafi
+17) Moamar Gaddafi
+18) Mu'ammar Qadhdhafi
+19) Muammar Khaddafi
+20) Muammar al-Khaddafi
+21) Mu'amar al-Kadafi
+22) Muammar Ghaddafy
+23) Muammar Ghadafi
+24) Muammar Ghaddafi
+25) Muamar Kaddafi
+26) Muammar Quathafi
+27) Muammar Gheddafi
+28) Muamar Al-Kaddafi
+29) Moammar Khadafy 
+30) Moammar Qudhafi
+31) Mu'ammar al-Qaddafi
+32) Mulazim Awwal Mu'ammar Muhammad Abu Minyar al-Qadhafi
diff --git a/src/sed/testsuite/khadafy.inp b/src/sed/testsuite/khadafy.inp
new file mode 100644
index 0000000..e719f4e
--- /dev/null
+++ b/src/sed/testsuite/khadafy.inp
@@ -0,0 +1,32 @@
+1)  Muammar Qaddafi
+2)  Mo'ammar Gadhafi
+3)  Muammar Kaddafi
+4)  Muammar Qadhafi
+5)  Moammar El Kadhafi
+6)  Muammar Gadafi
+7)  Mu'ammar al-Qadafi
+8)  Moamer El Kazzafi
+9)  Moamar al-Gaddafi
+10) Mu'ammar Al Qathafi
+11) Muammar Al Qathafi
+12) Mo'ammar el-Gadhafi
+13) Moamar El Kadhafi
+14) Muammar al-Qadhafi
+15) Mu'ammar al-Qadhdhafi
+16) Mu'ammar Qadafi
+17) Moamar Gaddafi
+18) Mu'ammar Qadhdhafi
+19) Muammar Khaddafi
+20) Muammar al-Khaddafi
+21) Mu'amar al-Kadafi
+22) Muammar Ghaddafy
+23) Muammar Ghadafi
+24) Muammar Ghaddafi
+25) Muamar Kaddafi
+26) Muammar Quathafi
+27) Muammar Gheddafi
+28) Muamar Al-Kaddafi
+29) Moammar Khadafy 
+30) Moammar Qudhafi
+31) Mu'ammar al-Qaddafi
+32) Mulazim Awwal Mu'ammar Muhammad Abu Minyar al-Qadhafi
diff --git a/src/sed/testsuite/khadafy.sed b/src/sed/testsuite/khadafy.sed
new file mode 100644
index 0000000..8ac81c0
--- /dev/null
+++ b/src/sed/testsuite/khadafy.sed
@@ -0,0 +1,2 @@
+# The Khadafy test is brought to you by Scott Anderson . . .
+/M[ou]'\{0,1\}am\{1,2\}[ae]r .*\([AEae]l[- ]\)\{0,1\}[GKQ]h\{0,1\}[aeu]\{1,\}\([dtz][dhz]\{0,1\}\)\{1,\}af[iy]/!d
diff --git a/src/sed/testsuite/linecnt.good b/src/sed/testsuite/linecnt.good
new file mode 100644
index 0000000..3cc1bd6
--- /dev/null
+++ b/src/sed/testsuite/linecnt.good
@@ -0,0 +1,110 @@
+1
+A dialogue on poverty
+2
+
+3
+        On the night when the rain beats,
+4
+        Driven by the wind,
+5
+        On the night when the snowflakes mingle
+6
+        With a sleety rain,
+7
+        I feel so helplessly cold.
+8
+        I nibble at a lump of salt,
+9
+        Sip the hot, oft-diluted dregs of _sake_;
+10
+        And coughing, snuffling,
+11
+        And stroking my scanty beard,
+12
+        I say in my pride,
+13
+        "There's none worthy, save I!"
+14
+        But I shiver still with cold.
+15
+        I pull up my hempen bedclothes,
+16
+        Wear what few sleeveless clothes I have,
+17
+        But cold and bitter is the night!
+18
+        As for those poorer than myself,        
+19
+        Their parents must be cold and hungry,
+20
+        Their wives and children beg and cry.
+21
+        Then, how do you struggle through life?
+22
+        
+23
+        Wide as they call the heaven and earth,
+24
+        For me they have shrunk quite small;
+25
+        Bright though they call the sun and moon,
+26
+        They never shine for me.
+27
+        Is it the same with all men,
+28
+        Or for me alone?
+29
+        By rare chance I was born a man
+30
+        And no meaner than my fellows,
+31
+        But, wearing unwadded sleeveless clothes
+32
+        In tatters, like weeds waving in the sea,
+33
+        Hanging from my shoulders,
+34
+        And under the sunken roof,
+35
+        Within the leaning walls,
+36
+        Here I lie on straw
+37
+        Spread on bare earth,
+38
+        With my parents at my pillow,
+39
+        And my wife and children at my feet,
+40
+        All huddled in grief and tears.
+41
+        No fire sends up smoke
+42
+        At the cooking-place,
+43
+        And in the cauldron
+44
+        A spider spins its web.
+45
+        With not a grain to cook,
+46
+        We moan like the night thrush.
+47
+        Then, "to cut," as the saying is,
+48
+        "The ends of what is already too short,"
+49
+        The village headman comes,
+50
+        With rod in hand, to our sleeping place,
+51
+        Growling for his dues.
+52
+        Must it be so hopeless --
+53
+        The way of this world?
+54
+
+55
+        -- Yamanoue Okura
diff --git a/src/sed/testsuite/linecnt.inp b/src/sed/testsuite/linecnt.inp
new file mode 100644
index 0000000..9eb6070
--- /dev/null
+++ b/src/sed/testsuite/linecnt.inp
@@ -0,0 +1,55 @@
+A dialogue on poverty
+
+        On the night when the rain beats,
+        Driven by the wind,
+        On the night when the snowflakes mingle
+        With a sleety rain,
+        I feel so helplessly cold.
+        I nibble at a lump of salt,
+        Sip the hot, oft-diluted dregs of _sake_;
+        And coughing, snuffling,
+        And stroking my scanty beard,
+        I say in my pride,
+        "There's none worthy, save I!"
+        But I shiver still with cold.
+        I pull up my hempen bedclothes,
+        Wear what few sleeveless clothes I have,
+        But cold and bitter is the night!
+        As for those poorer than myself,        
+        Their parents must be cold and hungry,
+        Their wives and children beg and cry.
+        Then, how do you struggle through life?
+        
+        Wide as they call the heaven and earth,
+        For me they have shrunk quite small;
+        Bright though they call the sun and moon,
+        They never shine for me.
+        Is it the same with all men,
+        Or for me alone?
+        By rare chance I was born a man
+        And no meaner than my fellows,
+        But, wearing unwadded sleeveless clothes
+        In tatters, like weeds waving in the sea,
+        Hanging from my shoulders,
+        And under the sunken roof,
+        Within the leaning walls,
+        Here I lie on straw
+        Spread on bare earth,
+        With my parents at my pillow,
+        And my wife and children at my feet,
+        All huddled in grief and tears.
+        No fire sends up smoke
+        At the cooking-place,
+        And in the cauldron
+        A spider spins its web.
+        With not a grain to cook,
+        We moan like the night thrush.
+        Then, "to cut," as the saying is,
+        "The ends of what is already too short,"
+        The village headman comes,
+        With rod in hand, to our sleeping place,
+        Growling for his dues.
+        Must it be so hopeless --
+        The way of this world?
+
+        -- Yamanoue Okura
diff --git a/src/sed/testsuite/linecnt.sed b/src/sed/testsuite/linecnt.sed
new file mode 100644
index 0000000..3134d36
--- /dev/null
+++ b/src/sed/testsuite/linecnt.sed
@@ -0,0 +1 @@
+=
diff --git a/src/sed/testsuite/mac-mf.good b/src/sed/testsuite/mac-mf.good
new file mode 100644
index 0000000..9be165d
--- /dev/null
+++ b/src/sed/testsuite/mac-mf.good
@@ -0,0 +1,200 @@
+## config:mac-pre.in
+## common Macintosh prefix for all Makefile.in in the Kerberos V5 tree
+
+#
+# MPW-style lines for the MakeFile
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+#
+# This first part is long enough that NFS:Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make
+
+#
+# End of MPW-style lines for MakeFile
+#
+
+WHAT = mac
+
+# Directory syntax Ä 
+R=
+C=
+S=:
+U=:
+
+BUILDTOP = :::
+srcdir = 
+
+# FIXME Ä   This doesn't translate to MPW yet, srcdir must be same as objdir
+# File in object dir can come from either the current dir or srcdir
+# 
+# .  Ä  . "{srcdir}"
+
+# Default rule that puts each file into separate segment
+
+.c.o Ä  .c
+   {CC}  {DepDir}{Default}.c {CFLAGS} -s {Default} -o {TargDir}{Default}.c.o
+
+CPPFLAGS =  -i {SRCTOP}:include -i {BUILDTOP}:include -i {SRCTOP}:include:krb5 -i {BUILDTOP}:include:krb5 -i {CIncludes}
+DEFS =   {CPPFLAGS}
+CC = c
+LD = link
+# The funny quoting in the LDFLAGS is to avoid xxx.c.o being mangled by
+# mac-mf.sed into xxx.c.o
+LDFLAGS=-t MPST -c "MPS " -sym on {Libraries}"Runtime."o {CLibraries}"StdClib."o {Libraries}"ToolLibs."o {Libraries}"Interface."o
+CCOPTS = 
+LIBS = 
+KRB5ROOT= @KRB5ROOT@
+KRB4=@KRB4@
+INSTALL=Duplicate -y
+INSTALL_PROGRAM=Duplicate -y
+INSTALL_DATA=Duplicate -y
+INSTALL_SETUID=Duplicate -y
+
+KRB5MANROOT = {KRB5ROOT}{S}man
+ADMIN_BINDIR = {KRB5ROOT}{S}admin
+SERVER_BINDIR = {KRB5ROOT}{S}sbin
+CLIENT_BINDIR = {KRB5ROOT}{S}bin
+ADMIN_MANDIR = {KRB5MANROOT}{S}man8
+SERVER_MANDIR = {KRB5MANROOT}{S}man8
+CLIENT_MANDIR = {KRB5MANROOT}{S}man1
+FILE_MANDIR = {KRB5MANROOT}{S}man5
+KRB5_LIBDIR = {KRB5ROOT}{S}lib
+KRB5_INCDIR = {KRB5ROOT}{S}include
+KRB5_INCSUBDIRS = ¶
+	{KRB5_INCDIR}{S}krb5 ¶
+	{KRB5_INCDIR}{S}asn.1 ¶
+	{KRB5_INCDIR}{S}kerberosIV
+
+
+RM = Delete -y -i
+CP = Duplicate -y
+MV = mv -f
+CHMOD=chmod
+RANLIB = @RANLIB@
+ARCHIVE = @ARCHIVE@
+ARADD = @ARADD@
+LN = @LN_S@
+AWK = @AWK@
+LEX = @LEX@
+LEXLIB = @LEXLIB@
+YACC = @YACC@
+
+# FIXME Ä   This won't work for srcdir != objdir.  But on the Mac, there
+# is no easy way to build a relative or absolute path, because  Ä  means
+# both the path separator, and the "go up a directory" indicator
+#SRCTOP = {srcdir}{S}{BUILDTOP}
+SRCTOP = {BUILDTOP}
+SUBDIRS = @subdirs@
+
+TOPLIBD = {BUILDTOP}{S}lib
+
+OBJEXT = c.o
+LIBEXT = a
+EXEEXT =
+
+all ÄÄ 
+# Generated automatically from Makefile.in by configure
+CFLAGS = {CCOPTS} {DEFS} -i ::des
+
+##DOSBUILDTOP = ..\..\:
+##DOSLIBNAME=..\crypto.lib
+##DOS!include {BUILDTOP}\config\windows.in
+
+OBJS=	md5.{OBJEXT} md5glue.{OBJEXT} md5crypto.{OBJEXT}
+
+SRCS=	md5.c md5glue.c md5crypto.c
+
+all ÄÄ  {OBJS} 
+
+t_mddriver Ä  t_mddriver.c.o md5.c.o
+	Link    {LDFLAGS} -o t_mddriver t_mddriver.c.o md5.c.o
+
+t_mddriver.exe Ä 
+	{CC} {CFLAGS2} -o t_mddriver.exe t_mddriver.c md5.c
+
+check ÄÄ  t_mddriver{EXEEXT}
+	{C}t_mddriver{EXEEXT} -x
+
+clean ÄÄ 
+	{RM} t_mddriver{EXEEXT} t_mddriver.{OBJEXT}
+# config:post.in
+# put all ÄÄ  first just in case no other rules occur here
+#
+all ÄÄ 
+
+check ÄÄ 
+
+clean ÄÄ  clean-{WHAT}
+	{RM} config.log pre.c.out post.c.out Makefile.c.out
+
+clean-unix ÄÄ 
+	if test -n "{OBJS}" ; then {RM} {OBJS}; else  Ä ; fi
+
+clean-windows ÄÄ 
+	{RM} Å.{OBJEXT}
+	{RM} msvc.pdb Å.err
diff --git a/src/sed/testsuite/mac-mf.inp b/src/sed/testsuite/mac-mf.inp
new file mode 100644
index 0000000..3adaee2
--- /dev/null
+++ b/src/sed/testsuite/mac-mf.inp
@@ -0,0 +1,200 @@
+## config/mac-pre.in
+## common Macintosh prefix for all Makefile.in in the Kerberos V5 tree.
+
+#
+# MPW-style lines for the MakeFile.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+#
+# This first part is long enough that NFS/Share doesn't notice the non-ASCII
+# characters in the rest of the file, so it claims that the file is type
+# TEXT, which is what we want.  The non-ASCII chars are necessary for MPW 
+# Make.
+
+#
+# End of MPW-style lines for MakeFile.
+#
+
+WHAT = mac
+
+# Directory syntax:
+R=
+C=
+S=:
+U=:
+
+BUILDTOP = ../../..
+srcdir = .
+
+# FIXME:  This doesn't translate to MPW yet, srcdir must be same as objdir.
+# File in object dir can come from either the current dir or srcdir.
+# 
+# . : . "{srcdir}"
+
+# Default rule that puts each file into separate segment.
+
+.c.o: .c
+   {CC}  {DepDir}{Default}.c {CFLAGS} -s {Default} -o {TargDir}{Default}.c.o
+
+CPPFLAGS =  -I$(SRCTOP)/include -I$(BUILDTOP)/include -I$(SRCTOP)/include/krb5 -I$(BUILDTOP)/include/krb5 -i {CIncludes}
+DEFS =   $(CPPFLAGS)
+CC = c
+LD = link
+# The funny quoting in the LDFLAGS is to avoid xxx.o being mangled by
+# mac-mf.sed into xxx.c.o.
+LDFLAGS=-t MPST -c "MPS " -sym on {Libraries}"Runtime."o {CLibraries}"StdClib."o {Libraries}"ToolLibs."o {Libraries}"Interface."o
+CCOPTS = 
+LIBS = 
+KRB5ROOT= @KRB5ROOT@
+KRB4=@KRB4@
+INSTALL=Duplicate -y
+INSTALL_PROGRAM=Duplicate -y
+INSTALL_DATA=Duplicate -y
+INSTALL_SETUID=Duplicate -y
+
+KRB5MANROOT = $(KRB5ROOT)$(S)man
+ADMIN_BINDIR = $(KRB5ROOT)$(S)admin
+SERVER_BINDIR = $(KRB5ROOT)$(S)sbin
+CLIENT_BINDIR = $(KRB5ROOT)$(S)bin
+ADMIN_MANDIR = $(KRB5MANROOT)$(S)man8
+SERVER_MANDIR = $(KRB5MANROOT)$(S)man8
+CLIENT_MANDIR = $(KRB5MANROOT)$(S)man1
+FILE_MANDIR = $(KRB5MANROOT)$(S)man5
+KRB5_LIBDIR = $(KRB5ROOT)$(S)lib
+KRB5_INCDIR = $(KRB5ROOT)$(S)include
+KRB5_INCSUBDIRS = \
+	$(KRB5_INCDIR)$(S)krb5 \
+	$(KRB5_INCDIR)$(S)asn.1 \
+	$(KRB5_INCDIR)$(S)kerberosIV
+
+
+RM = Delete -y -i
+CP = Duplicate -y
+MV = mv -f
+CHMOD=chmod
+RANLIB = @RANLIB@
+ARCHIVE = @ARCHIVE@
+ARADD = @ARADD@
+LN = @LN_S@
+AWK = @AWK@
+LEX = @LEX@
+LEXLIB = @LEXLIB@
+YACC = @YACC@
+
+# FIXME:  This won't work for srcdir != objdir.  But on the Mac, there
+# is no easy way to build a relative or absolute path, because : means
+# both the path separator, and the "go up a directory" indicator.
+#SRCTOP = $(srcdir)$(S)$(BUILDTOP)
+SRCTOP = $(BUILDTOP)
+SUBDIRS = @subdirs@
+
+TOPLIBD = $(BUILDTOP)$(S)lib
+
+OBJEXT = c.o
+LIBEXT = a
+EXEEXT =
+
+all::
+# Generated automatically from Makefile.in by configure.
+CFLAGS = $(CCOPTS) $(DEFS) -I$(srcdir)/../des
+
+##DOSBUILDTOP = ..\..\..
+##DOSLIBNAME=..\crypto.lib
+##DOS!include $(BUILDTOP)\config\windows.in
+
+OBJS=	md5.$(OBJEXT) md5glue.$(OBJEXT) md5crypto.$(OBJEXT)
+
+SRCS=	$(srcdir)/md5.c $(srcdir)/md5glue.c $(srcdir)/md5crypto.c
+
+all:: $(OBJS) 
+
+t_mddriver: t_mddriver.o md5.o
+	$(CC) $(CFLAGS) $(LDFLAGS) -o t_mddriver t_mddriver.o md5.o
+
+t_mddriver.exe:
+	$(CC) $(CFLAGS2) -o t_mddriver.exe t_mddriver.c md5.c
+
+check:: t_mddriver$(EXEEXT)
+	$(C)t_mddriver$(EXEEXT) -x
+
+clean::
+	$(RM) t_mddriver$(EXEEXT) t_mddriver.$(OBJEXT)
+# config/post.in
+# put all:: first just in case no other rules occur here
+#
+all::
+
+check::
+
+clean:: clean-$(WHAT)
+	$(RM) config.log pre.out post.out Makefile.out
+
+clean-unix::
+	if test -n "$(OBJS)" ; then $(RM) $(OBJS); else :; fi
+
+clean-windows::
+	$(RM) *.$(OBJEXT)
+	$(RM) msvc.pdb *.err
diff --git a/src/sed/testsuite/mac-mf.sed b/src/sed/testsuite/mac-mf.sed
new file mode 100644
index 0000000..9b08e60
--- /dev/null
+++ b/src/sed/testsuite/mac-mf.sed
@@ -0,0 +1,154 @@
+# Rewrite default rules from .c.o:  to  .c.o: .c
+/^\./s/^\(\.[a-z]*\)\(\.[a-z]*\)\( *: *\)$/\1\2\3 \1/
+
+# Change dependency char.
+/::/s/::/ \\Option-f\\Option-f /g
+/:/s/:/ \\Option-f /g
+/^[SU]=/s/ \\Option-f /:/g
+
+# Change syntax of Makefile vars.
+/\$/s/\${\([a-zA-Z0-9_]*\)}/{\1}/g
+/\$/s/\$(\([a-zA-Z0-9_]*\))/{\1}/g
+
+# Change $@ to {targ}
+/\$@/s/\$@/{targ}/g
+
+# Change pathname syntax.
+#
+# If line ends with ..  then assume it sets a variable that will
+# be used to prefix something else -- eliminate one colon, assuming
+# that a slash after the ${name} will turn into the missing colon.
+# Mac pathname conventions are IRREGULAR and UGLY!
+/\./s,\.\./\.\.$,::,
+/\./s,\.\.$,:,
+# Same if it ends with  .  (a single dot); turn it into nothing.
+/\./s,\.$,,g
+# Rules for .. and . elsewhere in the line
+# Convert ../: to ::, recur to get whole paths.
+/\./s,\.\./:,::,g
+# Convert ../../ to ::: 
+/\./s,\.\./\.\./,:::,g
+/\./s,\.\./,::,g
+/\.\//s,\./,:,g
+/\//s,/,:,g
+
+/=/s/ = \.$/ = :/
+
+# Comment out any explicit srcdir setting.
+# /srcdir/s/^srcdir/# srcdir/
+
+/version/s/^version=/# version=/
+
+/BASEDIR/s/^BASEDIR =.*$/BASEDIR = "{srcroot}"/
+/{BASEDIR}:/s/{BASEDIR}:/{BASEDIR}/g
+# The original lines screw up -I$(srcdir)/../des  by eliminating a colon.
+# Proposed fix:  Eliminate srcdir prefixes totally.
+#/{srcdir}:/s/{srcdir}:/"{srcdir}"/g
+/{srcdir}:/s/{srcdir}://g
+#/"{srcdir}":/s/"{srcdir}":/"{srcdir}"/g
+
+# Comment out settings of anything set by mpw host config.
+##/CC/s/^CC *=/#CC =/
+##/CFLAGS/s/^CFLAGS *=/#CFLAGS =/
+##/LDFLAGS/s/^LDFLAGS *=/#LDFLAGS =/
+
+# Change -I usage.
+/-I/s/-I\./-i :/g
+/-I/s/-I::bfd/-i ::bfd:/g
+/-I/s/-I::include/-i ::include:/g
+/-I/s/-I/-i /g
+
+# Change -D usage.
+/-D/s/\([ =]\)-D\([^ ]*\)/\1-d \2/g
+
+# Change continuation char.
+/\\$/s/\\$/\\Option-d/
+
+# Change wildcard char.
+/^[^#]/s/\*/\\Option-x/g
+
+# Change path of various types of source files.
+#/\.[chly]/s/\([ 	><=]\)\([-a-zA-Z0-9_$:"]*\)\.\([chly]\)/\1"{s}"\2.\3/g
+#/\.[chly]/s/^\([-a-zA-Z0-9_${}:"]*\)\.\([chly]\)/"{s}"\1.\2/g
+# Skip the {s} and {o} business for now...
+# Fix some overenthusiasms.
+#/{s}/s/"{s}""{srcdir}"/"{srcdir}"/g
+#/{s}/s/"{s}"{\([a-zA-Z0-9_]*\)dir}/"{\1dir}"/g
+#/{s}/s/"{s}"{\([a-zA-Z0-9_]*\)DIR}/"{\1DIR}"/g
+#/{s}/s/"{s}""{\([a-zA-Z0-9_]*\)dir}"/"{\1dir}"/g
+#/{s}/s/"{s}""{\([a-zA-Z0-9_]*\)DIR}"/"{\1DIR}"/g
+#/{s}/s/"{s}":/:/g
+#/{s}/s/^"{s}"//g
+#/^\./s/"{s}"\././g
+
+# Change extension and path of objects, except in the OBJEXT line.
+#/^OBJEXT/!s/\([ 	=]\)\([-a-zA-Z0-9_${}:"]*\)\.o/\1"{o}"\2.c.o/g
+#/\.o/s/^\([-a-zA-Z0-9_${}:"]*\)\.o/"{o}"\1.c.o/g
+# Skip the {o} stuff for now...
+/^OBJEXT/!s/\([ 	=]\)\([-a-zA-Z0-9_${}:"]*\)\.o/\1\2.c.o/g
+/\.o/s/^\([-a-zA-Z0-9_${}:"]*\)\.o/\1.c.o/g
+# Clean up.
+#/\.o/s/"{o}""{o}"/"{o}"/g
+#/{o}/s/^"{o}"\([a-zA-Z0-9_]*\)=/\1=/g
+
+# Change extension of libs.
+# /\.a/s/lib\([a-z]*\)\.a/lib\1.o/g
+
+# Remove non-echo option.
+/^	-/s/^	-/	/
+
+# Change cp to duplicate.
+# /cp/s/^\([ 	]*\)cp /\1Duplicate -d -y /
+# Change mv to rename.
+# /mv/s/^\([ 	]*\)mv /\1Rename -y /
+# /Rename/s/^\([ 	]*\)Rename -y -f/\1Rename -y/
+# Change rm to delete.
+/^RM=/s/rm -f/Delete -i -y/
+# /rm/s/^\([ 	]*\)rm /\1Delete -y /
+# /Delete/s/^\([ 	]*\)Delete -y -f/\1Delete -y/
+# Comment out symlinking.
+# /ln/s/^\([ 	]*\)ln /\1# ln /
+
+# Remove -c from explicit compiler calls.
+# /-c/s/{CC}\(.*\) -c \(.*\)\([-a-z]*\)\.c/{CC}\1 \2\3.c -o "{o}"\3.c.o/g
+# Don't ask... prev subst seems to omit the second filename.
+# /-o/s/\([-a-z]*\)\.c -o "{o}".c.o/\1\.c -o "{o}"\1.c.o/
+
+# Change linking cc to link.
+/LDFLAGS/    s/{CC} \(.*\){CFLAGS}\(.*\){LDFLAGS}/Link \1 \2 {LDFLAGS}/
+/CFLAGS_LINK/s/{CC} \(.*\){CFLAGS_LINK}\(.*\){LDFLAGS}/Link \1 \2 {LDFLAGS}/
+
+# Comment out .PHONY rules.
+/\.PHONY/s/^\.PHONY/# \.PHONY/
+# Comment out .SUFFIXES rules.
+/\.SUFFIXES/s/^\.SUFFIXES/# \.SUFFIXES/
+# Comment out .PRECIOUS rules.
+/\.PRECIOUS/s/^\.PRECIOUS/# \.PRECIOUS/
+## Comment out default rules.
+##/^\./s/^\(\.[a-z]*\.[a-z]* \)/# \1/
+
+#
+#  End of original hack-mf.sed
+#
+#  Begin original hack-mf2.sed
+#
+# Transform expressions.
+
+# Set the install program appropriate.
+# /INSTALL/s/^INSTALL *= *`.*`:install.sh -c/INSTALL = Duplicate -y/
+
+# Include from the extra-include dir.
+# /^INCLUDES = /s/^INCLUDES = /INCLUDES = -i "{srcroot}"extra-include /
+
+# Yuck - remove unconverted autoconf things.
+# /@/s/@[^ 	]*@//g
+
+# Hackery, pure and simple
+# To speed up compiles, remove duplicated -i options.
+/-i/s/\(-i [^ ]*\) \1 /\1 /g
+
+# Note!  There are 8-bit characters in the three lines below:
+#   	0xc4, 0xb6, 0xc5.
+/Option/s/\\Option-f/Ä/g
+/Option/s/\\Option-d/¶/g
+/Option/s/\\Option-x/Å/g
diff --git a/src/sed/testsuite/madding.good b/src/sed/testsuite/madding.good
new file mode 100644
index 0000000..537ab50
--- /dev/null
+++ b/src/sed/testsuite/madding.good
@@ -0,0 +1 @@
+The girl on the summit of the load sat motionless, surrounded by tables and chairs with their legs upwards, backed by an oak settle, and ornamented in front by pots of geraniums, myrtles, and cactuses, together with a caged canary -- all probably from the windows of the house just vacated.  There was also a cat in a willow basket, from the partly-opened lid of which she gazed with half-closed eyes, and affectionately-surveyed the small birds around.  The handsome girl waited for some time idly in her place, and the only sound heard in the stillness was the hopping of the canary up and down the perches of its prison.  Then she looked attentively downwards.  It was not at the bird, nor at the cat; it was at an oblong package tied in paper, and lying between them.  She turned her head to learn if the waggoner were coming.  He was not yet in sight; and her eyes crept back to the package, her thoughts seeming to run upon what was inside it.  At length she drew the article into her lap, and untied the paper covering; a small swing looking- glass was disclosed, in which she proceeded to survey herself attentively.  She parted her lips and smiled.  It was a fine morning, and the sun lighted up to a scarlet glow the crimson jacket she wore, and painted a soft lustre upon her bright face and dark hair.  The myrtles, geraniums, and cactuses packed around her were fresh and green, and at such a leafless season they invested the whole concern of horses, waggon, furniture, and girl with a peculiar vernal charm.  What possessed her to indulge in such a performance in the sight of the sparrows, blackbirds, and unperceived farmer who were alone its spectators, -- whether the smile began as a factitious one, to test her capacity in that art, -- nobody knows; it ended certainly in a real smile.  She blushed at herself, and seeing her reflection blush, blushed the more.  The change from the customary spot and necessary occasion of such an act -- from the dressing hour in a bedroom to a time of travelling out of doors -- lent to the idle deed a novelty it did not intrinsically possess.  The picture was a delicate one.  Woman's prescriptive infirmity had stalked into the sunlight, which had clothed it in the freshness of an originality.  A cynical inference was irresistible by Gabriel Oak as he regarded the scene, generous though he fain would have been.  There was no necessity whatever for her looking in the glass.  She did not adjust her hat, or pat her hair, or press a dimple into shape, or do one thing to signify that any such intention had been her motive in taking up the glass.  She simply observed herself as a fair product of Nature in the feminine kind, her thoughts seeming to glide into far-off though likely dramas in which men would play a part -- vistas of probable triumphs -- the smiles being of a phase suggesting that hearts were imagined as lost and won.  Still, this was but conjecture, and the whole series of actions was so idly put forth as to make it rash to assert that intention had any part in them at all.  The waggoner's steps were heard returning.  She put the glass in the paper, and the whole again into its place.  When the waggon had passed on, Gabriel withdrew from his point of espial, and descending into the road, followed the vehicle to the turnpike-gate some way beyond the bottom of the hill, where the object of his contemplation now halted for the payment of toll.  About twenty steps still remained between him and the gate, when he heard a dispute.  It was a difference concerning twopence between the persons with the waggon and the man at the toll-bar.  "Mis'ess's niece is upon the top of the things, and she says that's enough that I've offered ye, you great miser, and she won't pay any more."  These were the waggoner's words.  "Very well; then mis'ess's niece can't pass," said the turnpike-keeper, closing the gate.  Oak looked from one to the other of the disputants, and fell into a reverie.  There was something in the tone of twopence remarkably insignificant.  Threepence had a definite value as money -- it was an appreciable infringement on a day's wages, and, as such, a higgling matter; but twopence -- "Here," he said, stepping forward and handing twopence to the gatekeeper; "let the young woman pass."  He looked up at her then; she heard his words, and looked down.  Gabriel's features adhered throughout their form so exactly to the middle line between the beauty of St. John and the ugliness of Judas Iscariot, as represented in a window of the church he attended, that not a single lineament could be selected and called worthy either of distinction or notoriety.  The red-jacketed and dark-haired maiden seemed to think so too, for she carelessly glanced over him, and told her man to drive on.  She might have looked her thanks to Gabriel on a minute scale, but she did not speak them; more probably she felt none, for in gaining her a passage he had lost her her point, and we know how women take a favour of that kind.  The gatekeeper surveyed the retreating vehicle.  "That's a handsome maid," he said to Oak.  "But she has her faults," said Gabriel.  "True, farmer." "And the greatest of them is -- well, what it is always." "Beating people down? ay, 'tis so." "O no." "What, then?" Gabriel, perhaps a little piqued by the comely traveller's indifference, glanced back to where he had witnessed her performance over the hedge, and said, "Vanity, dude."
diff --git a/src/sed/testsuite/madding.inp b/src/sed/testsuite/madding.inp
new file mode 100644
index 0000000..2367bc8
--- /dev/null
+++ b/src/sed/testsuite/madding.inp
@@ -0,0 +1 @@
+The girl on the summit of the load sat motionless, surrounded by tables and chairs with their legs upwards, backed by an oak settle, and ornamented in front by pots of geraniums, myrtles, and cactuses, together with a caged canary -- all probably from the windows of the house just vacated.  There was also a cat in a willow basket, from the partly-opened lid of which she gazed with half-closed eyes, and affectionately-surveyed the small birds around.  The handsome girl waited for some time idly in her place, and the only sound heard in the stillness was the hopping of the canary up and down the perches of its prison.  Then she looked attentively downwards.  It was not at the bird, nor at the cat; it was at an oblong package tied in paper, and lying between them.  She turned her head to learn if the waggoner were coming.  He was not yet in sight; and her eyes crept back to the package, her thoughts seeming to run upon what was inside it.  At length she drew the article into her lap, and untied the paper covering; a small swing looking- glass was disclosed, in which she proceeded to survey herself attentively.  She parted her lips and smiled.  It was a fine morning, and the sun lighted up to a scarlet glow the crimson jacket she wore, and painted a soft lustre upon her bright face and dark hair.  The myrtles, geraniums, and cactuses packed around her were fresh and green, and at such a leafless season they invested the whole concern of horses, waggon, furniture, and girl with a peculiar vernal charm.  What possessed her to indulge in such a performance in the sight of the sparrows, blackbirds, and unperceived farmer who were alone its spectators, -- whether the smile began as a factitious one, to test her capacity in that art, -- nobody knows; it ended certainly in a real smile.  She blushed at herself, and seeing her reflection blush, blushed the more.  The change from the customary spot and necessary occasion of such an act -- from the dressing hour in a bedroom to a time of travelling out of doors -- lent to the idle deed a novelty it did not intrinsically possess.  The picture was a delicate one.  Woman's prescriptive infirmity had stalked into the sunlight, which had clothed it in the freshness of an originality.  A cynical inference was irresistible by Gabriel Oak as he regarded the scene, generous though he fain would have been.  There was no necessity whatever for her looking in the glass.  She did not adjust her hat, or pat her hair, or press a dimple into shape, or do one thing to signify that any such intention had been her motive in taking up the glass.  She simply observed herself as a fair product of Nature in the feminine kind, her thoughts seeming to glide into far-off though likely dramas in which men would play a part -- vistas of probable triumphs -- the smiles being of a phase suggesting that hearts were imagined as lost and won.  Still, this was but conjecture, and the whole series of actions was so idly put forth as to make it rash to assert that intention had any part in them at all.  The waggoner's steps were heard returning.  She put the glass in the paper, and the whole again into its place.  When the waggon had passed on, Gabriel withdrew from his point of espial, and descending into the road, followed the vehicle to the turnpike-gate some way beyond the bottom of the hill, where the object of his contemplation now halted for the payment of toll.  About twenty steps still remained between him and the gate, when he heard a dispute.  It was a difference concerning twopence between the persons with the waggon and the man at the toll-bar.  "Mis'ess's niece is upon the top of the things, and she says that's enough that I've offered ye, you great miser, and she won't pay any more."  These were the waggoner's words.  "Very well; then mis'ess's niece can't pass," said the turnpike-keeper, closing the gate.  Oak looked from one to the other of the disputants, and fell into a reverie.  There was something in the tone of twopence remarkably insignificant.  Threepence had a definite value as money -- it was an appreciable infringement on a day's wages, and, as such, a higgling matter; but twopence -- "Here," he said, stepping forward and handing twopence to the gatekeeper; "let the young woman pass."  He looked up at her then; she heard his words, and looked down.  Gabriel's features adhered throughout their form so exactly to the middle line between the beauty of St. John and the ugliness of Judas Iscariot, as represented in a window of the church he attended, that not a single lineament could be selected and called worthy either of distinction or notoriety.  The red-jacketed and dark-haired maiden seemed to think so too, for she carelessly glanced over him, and told her man to drive on.  She might have looked her thanks to Gabriel on a minute scale, but she did not speak them; more probably she felt none, for in gaining her a passage he had lost her her point, and we know how women take a favour of that kind.  The gatekeeper surveyed the retreating vehicle.  "That's a handsome maid," he said to Oak.  "But she has her faults," said Gabriel.  "True, farmer." "And the greatest of them is -- well, what it is always." "Beating people down? ay, 'tis so." "O no." "What, then?" Gabriel, perhaps a little piqued by the comely traveller's indifference, glanced back to where he had witnessed her performance over the hedge, and said, "Vanity."
diff --git a/src/sed/testsuite/madding.sed b/src/sed/testsuite/madding.sed
new file mode 100644
index 0000000..5494f2b
--- /dev/null
+++ b/src/sed/testsuite/madding.sed
@@ -0,0 +1,8 @@
+# this is from Thomas Hardy's _Far From the Madding Crowd_.
+#
+# cf ftp://ftp.cdrom.com/pub/gutenberg/etext94/crowd10a.txt
+#
+# the point of this test, in case it isn't obvious, is to overfill fixed
+# buffers wherever they might be.
+#
+s/The girl on the summit of the load sat motionless, surrounded by tables and chairs with their legs upwards, backed by an oak settle, and ornamented in front by pots of geraniums, myrtles, and cactuses, together with a caged canary -- all probably from the windows of the house just vacated.  There was also a cat in a willow basket, from the partly-opened lid of which she gazed with half-closed eyes, and affectionately-surveyed the small birds around.  The handsome girl waited for some time idly in her place, and the only sound heard in the stillness was the hopping of the canary up and down the perches of its prison.  Then she looked attentively downwards.  It was not at the bird, nor at the cat; it was at an oblong package tied in paper, and lying between them.  She turned her head to learn if the waggoner were coming.  He was not yet in sight; and her eyes crept back to the package, her thoughts seeming to run upon what was inside it.  At length she drew the article into her lap, and untied the paper covering; a small swing looking- glass was disclosed, in which she proceeded to survey herself attentively.  She parted her lips and smiled.  It was a fine morning, and the sun lighted up to a scarlet glow the crimson jacket she wore, and painted a soft lustre upon her bright face and dark hair.  The myrtles, geraniums, and cactuses packed around her were fresh and green, and at such a leafless season they invested the whole concern of horses, waggon, furniture, and girl with a peculiar vernal charm.  What possessed her to indulge in such a performance in the sight of the sparrows, blackbirds, and unperceived farmer who were alone its spectators, -- whether the smile began as a factitious one, to test her capacity in that art, -- nobody knows; it ended certainly in a real smile.  She blushed at herself, and seeing her reflection blush, blushed the more.  The change from the customary spot and necessary occasion of such an act -- from the dressing hour in a bedroom to a time of travelling out of doors -- lent to the idle deed a novelty it did not intrinsically possess.  The picture was a delicate one.  Woman's prescriptive infirmity had stalked into the sunlight, which had clothed it in the freshness of an originality.  A cynical inference was irresistible by Gabriel Oak as he regarded the scene, generous though he fain would have been.  There was no necessity whatever for her looking in the glass.  She did not adjust her hat, or pat her hair, or press a dimple into shape, or do one thing to signify that any such intention had been her motive in taking up the glass.  She simply observed herself as a fair product of Nature in the feminine kind, her thoughts seeming to glide into far-off though likely dramas in which men would play a part -- vistas of probable triumphs -- the smiles being of a phase suggesting that hearts were imagined as lost and won.  Still, this was but conjecture, and the whole series of actions was so idly put forth as to make it rash to assert that intention had any part in them at all.  The waggoner's steps were heard returning.  She put the glass in the paper, and the whole again into its place.  When the waggon had passed on, Gabriel withdrew from his point of espial, and descending into the road, followed the vehicle to the turnpike-gate some way beyond the bottom of the hill, where the object of his contemplation now halted for the payment of toll.  About twenty steps still remained between him and the gate, when he heard a dispute.  It was a difference concerning twopence between the persons with the waggon and the man at the toll-bar.  "Mis'ess's niece is upon the top of the things, and she says that's enough that I've offered ye, you great miser, and she won't pay any more."  These were the waggoner's words.  "Very well; then mis'ess's niece can't pass," said the turnpike-keeper, closing the gate.  Oak looked from one to the other of the disputants, and fell into a reverie.  There was something in the tone of twopence remarkably insignificant.  Threepence had a definite value as money -- it was an appreciable infringement on a day's wages, and, as such, a higgling matter; but twopence -- "Here," he said, stepping forward and handing twopence to the gatekeeper; "let the young woman pass."  He looked up at her then; she heard his words, and looked down.  Gabriel's features adhered throughout their form so exactly to the middle line between the beauty of St. John and the ugliness of Judas Iscariot, as represented in a window of the church he attended, that not a single lineament could be selected and called worthy either of distinction or notoriety.  The red-jacketed and dark-haired maiden seemed to think so too, for she carelessly glanced over him, and told her man to drive on.  She might have looked her thanks to Gabriel on a minute scale, but she did not speak them; more probably she felt none, for in gaining her a passage he had lost her her point, and we know how women take a favour of that kind.  The gatekeeper surveyed the retreating vehicle.  "That's a handsome maid," he said to Oak.  "But she has her faults," said Gabriel.  "True, farmer." "And the greatest of them is -- well, what it is always." "Beating people down? ay, 'tis so." "O no." "What, then?" Gabriel, perhaps a little piqued by the comely traveller's indifference, glanced back to where he had witnessed her performance over the hedge, and said, "Vanity."/The girl on the summit of the load sat motionless, surrounded by tables and chairs with their legs upwards, backed by an oak settle, and ornamented in front by pots of geraniums, myrtles, and cactuses, together with a caged canary -- all probably from the windows of the house just vacated.  There was also a cat in a willow basket, from the partly-opened lid of which she gazed with half-closed eyes, and affectionately-surveyed the small birds around.  The handsome girl waited for some time idly in her place, and the only sound heard in the stillness was the hopping of the canary up and down the perches of its prison.  Then she looked attentively downwards.  It was not at the bird, nor at the cat; it was at an oblong package tied in paper, and lying between them.  She turned her head to learn if the waggoner were coming.  He was not yet in sight; and her eyes crept back to the package, her thoughts seeming to run upon what was inside it.  At length she drew the article into her lap, and untied the paper covering; a small swing looking- glass was disclosed, in which she proceeded to survey herself attentively.  She parted her lips and smiled.  It was a fine morning, and the sun lighted up to a scarlet glow the crimson jacket she wore, and painted a soft lustre upon her bright face and dark hair.  The myrtles, geraniums, and cactuses packed around her were fresh and green, and at such a leafless season they invested the whole concern of horses, waggon, furniture, and girl with a peculiar vernal charm.  What possessed her to indulge in such a performance in the sight of the sparrows, blackbirds, and unperceived farmer who were alone its spectators, -- whether the smile began as a factitious one, to test her capacity in that art, -- nobody knows; it ended certainly in a real smile.  She blushed at herself, and seeing her reflection blush, blushed the more.  The change from the customary spot and necessary occasion of such an act -- from the dressing hour in a bedroom to a time of travelling out of doors -- lent to the idle deed a novelty it did not intrinsically possess.  The picture was a delicate one.  Woman's prescriptive infirmity had stalked into the sunlight, which had clothed it in the freshness of an originality.  A cynical inference was irresistible by Gabriel Oak as he regarded the scene, generous though he fain would have been.  There was no necessity whatever for her looking in the glass.  She did not adjust her hat, or pat her hair, or press a dimple into shape, or do one thing to signify that any such intention had been her motive in taking up the glass.  She simply observed herself as a fair product of Nature in the feminine kind, her thoughts seeming to glide into far-off though likely dramas in which men would play a part -- vistas of probable triumphs -- the smiles being of a phase suggesting that hearts were imagined as lost and won.  Still, this was but conjecture, and the whole series of actions was so idly put forth as to make it rash to assert that intention had any part in them at all.  The waggoner's steps were heard returning.  She put the glass in the paper, and the whole again into its place.  When the waggon had passed on, Gabriel withdrew from his point of espial, and descending into the road, followed the vehicle to the turnpike-gate some way beyond the bottom of the hill, where the object of his contemplation now halted for the payment of toll.  About twenty steps still remained between him and the gate, when he heard a dispute.  It was a difference concerning twopence between the persons with the waggon and the man at the toll-bar.  "Mis'ess's niece is upon the top of the things, and she says that's enough that I've offered ye, you great miser, and she won't pay any more."  These were the waggoner's words.  "Very well; then mis'ess's niece can't pass," said the turnpike-keeper, closing the gate.  Oak looked from one to the other of the disputants, and fell into a reverie.  There was something in the tone of twopence remarkably insignificant.  Threepence had a definite value as money -- it was an appreciable infringement on a day's wages, and, as such, a higgling matter; but twopence -- "Here," he said, stepping forward and handing twopence to the gatekeeper; "let the young woman pass."  He looked up at her then; she heard his words, and looked down.  Gabriel's features adhered throughout their form so exactly to the middle line between the beauty of St. John and the ugliness of Judas Iscariot, as represented in a window of the church he attended, that not a single lineament could be selected and called worthy either of distinction or notoriety.  The red-jacketed and dark-haired maiden seemed to think so too, for she carelessly glanced over him, and told her man to drive on.  She might have looked her thanks to Gabriel on a minute scale, but she did not speak them; more probably she felt none, for in gaining her a passage he had lost her her point, and we know how women take a favour of that kind.  The gatekeeper surveyed the retreating vehicle.  "That's a handsome maid," he said to Oak.  "But she has her faults," said Gabriel.  "True, farmer." "And the greatest of them is -- well, what it is always." "Beating people down? ay, 'tis so." "O no." "What, then?" Gabriel, perhaps a little piqued by the comely traveller's indifference, glanced back to where he had witnessed her performance over the hedge, and said, "Vanity, dude."/
diff --git a/src/sed/testsuite/manis.good b/src/sed/testsuite/manis.good
new file mode 100644
index 0000000..f349b76
--- /dev/null
+++ b/src/sed/testsuite/manis.good
@@ -0,0 +1,22 @@
+s%@CFLAGS@%%g
+s%@CPPFLAGS@%-I/%g
+s%@CXXFLAGS@%-x c++%g
+s%@DEFS@%$DEFS%g
+s%@LDFLAGS@%-L/usr/lib%g
+s%@LIBS@%-lgnu -lbfd%g
+s%@exec_prefix@%%g
+s%@prefix@%$prefix%g
+s%@RANLIB@%$RANLIB%g
+s%@CC@%/usr/local/bin/gcc%g
+s%@CPP@%$CPP%g
+s%@XCFLAGS@%$XCFLAGS%g
+s%@XINCLUDES@%$XINCLUDES%g
+s%@XLIBS@%$XLIBS%g
+s%@XPROGS@%$XPROGS%g
+s%@TCLHDIR@%$TCLHDIR%g
+s%@TCLLIB@%$TCLLIB%g
+s%@TKHDIR@%$TKHDIR%g
+s%@TKLIB@%$TKLIB%g
+s%@PTY_TYPE@%$PTY_TYPE%g
+s%@EVENT_TYPE@%$EVENT_TYPE%g
+s%@SETUID@%$SETUID%g
diff --git a/src/sed/testsuite/manis.inp b/src/sed/testsuite/manis.inp
new file mode 100644
index 0000000..f349b76
--- /dev/null
+++ b/src/sed/testsuite/manis.inp
@@ -0,0 +1,22 @@
+s%@CFLAGS@%%g
+s%@CPPFLAGS@%-I/%g
+s%@CXXFLAGS@%-x c++%g
+s%@DEFS@%$DEFS%g
+s%@LDFLAGS@%-L/usr/lib%g
+s%@LIBS@%-lgnu -lbfd%g
+s%@exec_prefix@%%g
+s%@prefix@%$prefix%g
+s%@RANLIB@%$RANLIB%g
+s%@CC@%/usr/local/bin/gcc%g
+s%@CPP@%$CPP%g
+s%@XCFLAGS@%$XCFLAGS%g
+s%@XINCLUDES@%$XINCLUDES%g
+s%@XLIBS@%$XLIBS%g
+s%@XPROGS@%$XPROGS%g
+s%@TCLHDIR@%$TCLHDIR%g
+s%@TCLLIB@%$TCLLIB%g
+s%@TKHDIR@%$TKHDIR%g
+s%@TKLIB@%$TKLIB%g
+s%@PTY_TYPE@%$PTY_TYPE%g
+s%@EVENT_TYPE@%$EVENT_TYPE%g
+s%@SETUID@%$SETUID%g
diff --git a/src/sed/testsuite/manis.sed b/src/sed/testsuite/manis.sed
new file mode 100644
index 0000000..5017845
--- /dev/null
+++ b/src/sed/testsuite/manis.sed
@@ -0,0 +1,6 @@
+# straight out of an autoconf-generated configure.
+# The input should look just like the input after this is run.
+#
+# Protect against being on the right side of a sed subst in config.status. 
+s/%@/@@/; s/@%/@@/; s/%g$/@g/; /@g$/s/[\\\\&%]/\\\\&/g; 
+ s/@@/%@/; s/@@/@%/; s/@g$/%g/
diff --git a/src/sed/testsuite/middle.good b/src/sed/testsuite/middle.good
new file mode 100644
index 0000000..71f33c1
--- /dev/null
+++ b/src/sed/testsuite/middle.good
@@ -0,0 +1,3 @@
+   universe.  You will never succeed.  Everything will fail and come
+   to an end finally.  But you have a chance to carve a little bit
+   of order and maybe even beauty out of the raw materials that
diff --git a/src/sed/testsuite/middle.inp b/src/sed/testsuite/middle.inp
new file mode 100644
index 0000000..5c4b4a4
--- /dev/null
+++ b/src/sed/testsuite/middle.inp
@@ -0,0 +1,9 @@
+   "...by imposing a tiny bit of order in a communication you are
+   translating, you are carving out a little bit of order in the
+   universe.  You will never succeed.  Everything will fail and come
+   to an end finally.  But you have a chance to carve a little bit
+   of order and maybe even beauty out of the raw materials that
+   surround you everywhere, and I think there is no greater meaning
+   in life."
+
+             Donald L. Philippi, Oct 1930 - Jan 1993
diff --git a/src/sed/testsuite/middle.sed b/src/sed/testsuite/middle.sed
new file mode 100644
index 0000000..3471789
--- /dev/null
+++ b/src/sed/testsuite/middle.sed
@@ -0,0 +1 @@
+3,5p
diff --git a/src/sed/testsuite/modulo.good b/src/sed/testsuite/modulo.good
new file mode 100644
index 0000000..b42f1ab
--- /dev/null
+++ b/src/sed/testsuite/modulo.good
@@ -0,0 +1,22 @@
+1
+s%@CFLAGS@%%g
+3
+s%@CXXFLAGS@%-x c++%g
+5
+s%@LDFLAGS@%-L/usr/lib%g
+7
+s%@exec_prefix@%%g
+9
+s%@RANLIB@%$RANLIB%g
+11
+s%@CPP@%$CPP%g
+13
+s%@XINCLUDES@%$XINCLUDES%g
+15
+s%@XPROGS@%$XPROGS%g
+17
+s%@TCLLIB@%$TCLLIB%g
+19
+s%@TKLIB@%$TKLIB%g
+21
+s%@EVENT_TYPE@%$EVENT_TYPE%g
diff --git a/src/sed/testsuite/modulo.inp b/src/sed/testsuite/modulo.inp
new file mode 100644
index 0000000..f349b76
--- /dev/null
+++ b/src/sed/testsuite/modulo.inp
@@ -0,0 +1,22 @@
+s%@CFLAGS@%%g
+s%@CPPFLAGS@%-I/%g
+s%@CXXFLAGS@%-x c++%g
+s%@DEFS@%$DEFS%g
+s%@LDFLAGS@%-L/usr/lib%g
+s%@LIBS@%-lgnu -lbfd%g
+s%@exec_prefix@%%g
+s%@prefix@%$prefix%g
+s%@RANLIB@%$RANLIB%g
+s%@CC@%/usr/local/bin/gcc%g
+s%@CPP@%$CPP%g
+s%@XCFLAGS@%$XCFLAGS%g
+s%@XINCLUDES@%$XINCLUDES%g
+s%@XLIBS@%$XLIBS%g
+s%@XPROGS@%$XPROGS%g
+s%@TCLHDIR@%$TCLHDIR%g
+s%@TCLLIB@%$TCLLIB%g
+s%@TKHDIR@%$TKHDIR%g
+s%@TKLIB@%$TKLIB%g
+s%@PTY_TYPE@%$PTY_TYPE%g
+s%@EVENT_TYPE@%$EVENT_TYPE%g
+s%@SETUID@%$SETUID%g
diff --git a/src/sed/testsuite/modulo.sed b/src/sed/testsuite/modulo.sed
new file mode 100644
index 0000000..68b4930
--- /dev/null
+++ b/src/sed/testsuite/modulo.sed
@@ -0,0 +1 @@
+0~2d;=
diff --git a/src/sed/testsuite/newjis.good b/src/sed/testsuite/newjis.good
new file mode 100644
index 0000000..4de16b0
--- /dev/null
+++ b/src/sed/testsuite/newjis.good
@@ -0,0 +1,4 @@
+$B$H$J$j$NM9JX6I$K(B
+$B$?$F$+$1$?$N$O(B
+$B$?$F$+$1$?$+$C$?$+$i(B
+$B$?$F$+$1$?!#(B
diff --git a/src/sed/testsuite/newjis.inp b/src/sed/testsuite/newjis.inp
new file mode 100644
index 0000000..fc710f6
--- /dev/null
+++ b/src/sed/testsuite/newjis.inp
@@ -0,0 +1,4 @@
+$B$H$J$j$N$?$1$,$-$K(B
+$B$?$F$+$1$?$N$O(B
+$B$?$F$+$1$?$+$C$?$+$i(B
+$B$?$F$+$1$?!#(B
diff --git a/src/sed/testsuite/newjis.sed b/src/sed/testsuite/newjis.sed
new file mode 100644
index 0000000..1bc941d
--- /dev/null
+++ b/src/sed/testsuite/newjis.sed
@@ -0,0 +1 @@
+s/$?$1$,$-/M9JX6I/
diff --git a/src/sed/testsuite/noeol.good b/src/sed/testsuite/noeol.good
new file mode 100644
index 0000000..fa5fc0e
--- /dev/null
+++ b/src/sed/testsuite/noeol.good
@@ -0,0 +1,3 @@
+This file is uniquewakuwaku
+in that it doeswakuwaku
+end in a newline.wakuwaku
\ No newline at end of file
diff --git a/src/sed/testsuite/noeol.inp b/src/sed/testsuite/noeol.inp
new file mode 100644
index 0000000..c4cf6a1
--- /dev/null
+++ b/src/sed/testsuite/noeol.inp
@@ -0,0 +1,3 @@
+This file is unique
+in that it does
+end in a newline.
\ No newline at end of file
diff --git a/src/sed/testsuite/noeol.sed b/src/sed/testsuite/noeol.sed
new file mode 100644
index 0000000..bea7110
--- /dev/null
+++ b/src/sed/testsuite/noeol.sed
@@ -0,0 +1 @@
+s/$/wakuwaku/g
diff --git a/src/sed/testsuite/noeolw.1good b/src/sed/testsuite/noeolw.1good
new file mode 100644
index 0000000..f0f44d9
--- /dev/null
+++ b/src/sed/testsuite/noeolw.1good
@@ -0,0 +1,7 @@
+This file is unique
+in that it does
+end in a newline.
+This file is unique
+in that it does
+end in a newline.
+in that it does
diff --git a/src/sed/testsuite/noeolw.2good b/src/sed/testsuite/noeolw.2good
new file mode 100644
index 0000000..c4cf6a1
--- /dev/null
+++ b/src/sed/testsuite/noeolw.2good
@@ -0,0 +1,3 @@
+This file is unique
+in that it does
+end in a newline.
\ No newline at end of file
diff --git a/src/sed/testsuite/noeolw.good b/src/sed/testsuite/noeolw.good
new file mode 100644
index 0000000..e76509a
--- /dev/null
+++ b/src/sed/testsuite/noeolw.good
@@ -0,0 +1,12 @@
+This file is unique
+This file is unique
+in that it does
+in that it does
+end in a newline.
+end in a newline.
+This file is unique
+This file is unique
+in that it does
+in that it does
+end in a newline.
+end in a newline.
\ No newline at end of file
diff --git a/src/sed/testsuite/noeolw.sed b/src/sed/testsuite/noeolw.sed
new file mode 100644
index 0000000..0924619
--- /dev/null
+++ b/src/sed/testsuite/noeolw.sed
@@ -0,0 +1,10 @@
+w noeolw.1out
+$ {
+	x
+	w noeolw.1out
+	x
+}
+h
+1,3w noeolw.2out
+p
+p
diff --git a/src/sed/testsuite/numsub.good b/src/sed/testsuite/numsub.good
new file mode 100644
index 0000000..9bdaaef
--- /dev/null
+++ b/src/sed/testsuite/numsub.good
@@ -0,0 +1 @@
+foo foo fo oo f oo foo foo foo foo foo foo foo bar foo foo foo foo foo
diff --git a/src/sed/testsuite/numsub.inp b/src/sed/testsuite/numsub.inp
new file mode 100644
index 0000000..6924c98
--- /dev/null
+++ b/src/sed/testsuite/numsub.inp
@@ -0,0 +1,2 @@
+foo foo fo oo f oo foo foo foo foo foo foo foo foo foo foo foo foo foo
+foo foo fo oo f oo foo foo foo foo foo foo foo foo foo foo foo foo foo
diff --git a/src/sed/testsuite/numsub.sed b/src/sed/testsuite/numsub.sed
new file mode 100644
index 0000000..4a96cad
--- /dev/null
+++ b/src/sed/testsuite/numsub.sed
@@ -0,0 +1,7 @@
+# the first one matches, the second doesn't
+1s/foo/bar/10
+2s/foo/bar/20
+
+# The second line should be deleted.  ssed 3.55-3.58 do not.
+t
+d
diff --git a/src/sed/testsuite/numsub2.good b/src/sed/testsuite/numsub2.good
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/sed/testsuite/numsub2.good
diff --git a/src/sed/testsuite/numsub2.inp b/src/sed/testsuite/numsub2.inp
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/src/sed/testsuite/numsub2.inp
@@ -0,0 +1 @@
+
diff --git a/src/sed/testsuite/numsub2.sed b/src/sed/testsuite/numsub2.sed
new file mode 100644
index 0000000..dddead9
--- /dev/null
+++ b/src/sed/testsuite/numsub2.sed
@@ -0,0 +1 @@
+s/a*/b/2
diff --git a/src/sed/testsuite/numsub3.good b/src/sed/testsuite/numsub3.good
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/sed/testsuite/numsub3.good
diff --git a/src/sed/testsuite/numsub3.inp b/src/sed/testsuite/numsub3.inp
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/src/sed/testsuite/numsub3.inp
@@ -0,0 +1 @@
+
diff --git a/src/sed/testsuite/numsub3.sed b/src/sed/testsuite/numsub3.sed
new file mode 100644
index 0000000..0ea96a4
--- /dev/null
+++ b/src/sed/testsuite/numsub3.sed
@@ -0,0 +1 @@
+s/^a*/b/2
diff --git a/src/sed/testsuite/numsub4.good b/src/sed/testsuite/numsub4.good
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/sed/testsuite/numsub4.good
diff --git a/src/sed/testsuite/numsub4.inp b/src/sed/testsuite/numsub4.inp
new file mode 100644
index 0000000..b680253
--- /dev/null
+++ b/src/sed/testsuite/numsub4.inp
@@ -0,0 +1 @@
+z
diff --git a/src/sed/testsuite/numsub4.sed b/src/sed/testsuite/numsub4.sed
new file mode 100644
index 0000000..e76c5bf
--- /dev/null
+++ b/src/sed/testsuite/numsub4.sed
@@ -0,0 +1 @@
+s/^a*/b/2p
diff --git a/src/sed/testsuite/numsub5.good b/src/sed/testsuite/numsub5.good
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/sed/testsuite/numsub5.good
diff --git a/src/sed/testsuite/numsub5.inp b/src/sed/testsuite/numsub5.inp
new file mode 100644
index 0000000..b680253
--- /dev/null
+++ b/src/sed/testsuite/numsub5.inp
@@ -0,0 +1 @@
+z
diff --git a/src/sed/testsuite/numsub5.sed b/src/sed/testsuite/numsub5.sed
new file mode 100644
index 0000000..d8ecda2
--- /dev/null
+++ b/src/sed/testsuite/numsub5.sed
@@ -0,0 +1 @@
+s/a*/b/3p
diff --git a/src/sed/testsuite/ptestcases.h b/src/sed/testsuite/ptestcases.h
new file mode 100644
index 0000000..506b1cc
--- /dev/null
+++ b/src/sed/testsuite/ptestcases.h
@@ -0,0 +1,326 @@
+  { 0, 0, "2.8.2  Regular Expression General Requirement", NULL, },
+  { 2, 4, "bb*", "abbbc",  },
+  { 2, 2, "bb*", "ababbbc",  },
+  { 7, 9, "A#*::", "A:A#:qA::qA#::qA##::q",  },
+  { 1, 5, "A#*::", "A##::A#::qA::qA#:q",  },
+  { 0, 0, "2.8.3.1.2  BRE Special Characters", NULL, },
+  { 0, 0, "GA108", NULL, },
+  { 2, 2, "\\.", "a.c",  },
+  { 2, 2, "\\[", "a[c",  },
+  { 2, 2, "\\\\", "a\\c",  },
+  { 2, 2, "\\*", "a*c",  },
+  { 2, 2, "\\^", "a^c",  },
+  { 2, 2, "\\$", "a$c",  },
+  { 7, 11, "X\\*Y\\*8", "Y*8X*8X*Y*8",  },
+  { 0, 0, "GA109", NULL, },
+  { 2, 2, "[.]", "a.c",  },
+  { 2, 2, "[[]", "a[c",  },
+  { -1, -1, "[[]", "ac",  },
+  { 2, 2, "[\\]", "a\\c",  },
+  { 1, 1, "[\\a]", "abc",  },
+  { 2, 2, "[\\.]", "a\\.c",  },
+  { 2, 2, "[\\.]", "a.\\c",  },
+  { 2, 2, "[*]", "a*c",  },
+  { 2, 2, "[$]", "a$c",  },
+  { 2, 2, "[X*Y8]", "7*8YX",  },
+  { 0, 0, "GA110", NULL, },
+  { 2, 2, "*", "a*c",  },
+  { 3, 4, "*a", "*b*a*c",  },
+  { 1, 5, "**9=", "***9=9",  },
+  { 0, 0, "GA111", NULL, },
+  { 1, 1, "^*", "*bc",  },
+  { -1, -1, "^*", "a*c",  },
+  { -1, -1, "^*", "^*ab",  },
+  { 1, 5, "^**9=", "***9=",  },
+  { -1, -1, "^*5<*9", "5<9*5<*9",  },
+  { 0, 0, "GA112", NULL, },
+  { 2, 3, "\\(*b\\)", "a*b",  },
+  { -1, -1, "\\(*b\\)", "ac",  },
+  { 1, 6, "A\\(**9\\)=", "A***9=79",  },
+  { 0, 0, "GA113(1)", NULL, },
+  { 1, 3, "\\(^*ab\\)", "*ab",  },
+  { -1, -1, "\\(^*ab\\)", "^*ab",  },
+  { -1, -1, "\\(^*b\\)", "a*b",  },
+  { -1, -1, "\\(^*b\\)", "^*b",  },
+  { 0, 0, "GA114", NULL, },
+  { 1, 3, "a^b", "a^b",  },
+  { 1, 3, "a\\^b", "a^b",  },
+  { 1, 1, "^^", "^bc",  },
+  { 2, 2, "\\^", "a^c",  },
+  { 1, 1, "[c^b]", "^abc",  },
+  { 1, 1, "[\\^ab]", "^ab",  },
+  { 2, 2, "[\\^ab]", "c\\d",  },
+  { -1, -1, "[^^]", "^",  },
+  { 1, 3, "\\(a^b\\)", "a^b",  },
+  { 1, 3, "\\(a\\^b\\)", "a^b",  },
+  { 2, 2, "\\(\\^\\)", "a^b",  },
+  { 0, 0, "GA115", NULL, },
+  { 3, 3, "$$", "ab$",  },
+  { -1, -1, "$$", "$ab",  },
+  { 2, 3, "$c", "a$c",  },
+  { 2, 2, "[$]", "a$c",  },
+  { 1, 2, "\\$a", "$a",  },
+  { 3, 3, "\\$$", "ab$",  },
+  { 2, 6, "A\\([34]$[34]\\)B", "XA4$3BY",  },
+  { 0, 0, "2.8.3.1.3  Periods in BREs", NULL, },
+  { 0, 0, "GA116", NULL, },
+  { 1, 1, ".", "abc",  },
+  { -1, -1, ".ab", "abc",  },
+  { 1, 3, "ab.", "abc",  },
+  { 1, 3, "a.b", "a,b",  },
+  { -1, -1, ".......", "PqRs6",  },
+  { 1, 7, ".......", "PqRs6T8",  },
+  { 0, 0, "2.8.3.2  RE Bracket Expression", NULL, },
+  { 0, 0, "GA118", NULL, },
+  { 2, 2, "[abc]", "xbyz",  },
+  { -1, -1, "[abc]", "xyz",  },
+  { 2, 2, "[abc]", "xbay",  },
+  { 0, 0, "GA119", NULL, },
+  { 2, 2, "[^a]", "abc",  },
+  { 4, 4, "[^]cd]", "cd]ef",  },
+  { 2, 2, "[^abc]", "axyz",  },
+  { -1, -1, "[^abc]", "abc",  },
+  { 3, 3, "[^[.a.]b]", "abc",  },
+  { 3, 3, "[^[=a=]b]", "abc",  },
+  { 2, 2, "[^-ac]", "abcde-",  },
+  { 2, 2, "[^ac-]", "abcde-",  },
+  { 3, 3, "[^a-b]", "abcde",  },
+  { 3, 3, "[^a-bd-e]", "dec",  },
+  { 2, 2, "[^---]", "-ab",  },
+  { 16, 16, "[^a-zA-Z0-9]", "pqrstVWXYZ23579#",  },
+  { 0, 0, "GA120(1)", NULL, },
+  { 3, 3, "[]a]", "cd]ef",  },
+  { 1, 1, "[]-a]", "a_b",  },
+  { 3, 3, "[][.-.]-0]", "ab0-]",  },
+  { 1, 1, "[]^a-z]", "string",  },
+  { 0, 0, "GA120(2)", NULL, },
+  { 4, 4, "[^]cd]", "cd]ef",  },
+  { 0, 0, "[^]]*", "]]]]]]]]X",  },
+  { 0, 0, "[^]]*", "]]]]]]]]",  },
+  { 9, 9, "[^]]\\{1,\\}", "]]]]]]]]X",  },
+  { -1, -1, "[^]]\\{1,\\}", "]]]]]]]]",  },
+  { 0, 0, "GA120(3)", NULL, },
+  { 3, 3, "[c[.].]d]", "ab]cd",  },
+  { 2, 8, "[a-z]*[[.].]][A-Z]*", "Abcd]DEFg",  },
+  { 0, 0, "GA121", NULL, },
+  { 2, 2, "[[.a.]b]", "Abc",  },
+  { 1, 1, "[[.a.]b]", "aBc",  },
+  { -1, -1, "[[.a.]b]", "ABc",  },
+  { 3, 3, "[^[.a.]b]", "abc",  },
+  { 3, 3, "[][.-.]-0]", "ab0-]",  },
+  { 3, 3, "[A-[.].]c]", "ab]!",  },
+  { 0, 0, "GA122", NULL, },
+  { -2, -2, "[[.ch.]]", "abc",  },
+  { -2, -2, "[[.ab.][.CD.][.EF.]]", "yZabCDEFQ9",  },
+  { 0, 0, "GA125", NULL, },
+  { 2, 2, "[[=a=]b]", "Abc",  },
+  { 1, 1, "[[=a=]b]", "aBc",  },
+  { -1, -1, "[[=a=]b]", "ABc",  },
+  { 3, 3, "[^[=a=]b]", "abc",  },
+  { 0, 0, "GA126", NULL, },
+  { 0, 0, NULL, "the expected result for [[:alnum:]]* is 2-7 which is wrong" },
+  { 0, 0, "[[:alnum:]]*", " aB28gH",  },
+  { 2, 7, "[[:alnum:]][[:alnum:]]*", " aB28gH",  },
+  { 0, 0, NULL, "the expected result for [^[:alnum:]]* is 2-5 which is wrong" },
+  { 0, 0, "[^[:alnum:]]*", "2 	,a",  },
+  { 2, 5, "[^[:alnum:]][^[:alnum:]]*", "2 	,a",  },
+  { 0, 0, NULL, "the expected result for [[:alpha:]]* is 2-5 which is wrong" },
+  { 0, 0, "[[:alpha:]]*", " aBgH2",  },
+  { 2, 5, "[[:alpha:]][[:alpha:]]*", " aBgH2",  },
+  { 1, 6, "[^[:alpha:]]*", "2 	8,a",  },
+  { 1, 2, "[[:blank:]]*", " 	\r",  },
+  { 1, 8, "[^[:blank:]]*", "aB28gH, ",  },
+  { 1, 2, "[[:cntrl:]]*", "	 ",  },
+  { 1, 8, "[^[:cntrl:]]*", "aB2 8gh,",  },
+  { 0, 0, NULL, "the expected result for [[:digit:]]* is 2-3 which is wrong" },
+  { 0, 0, "[[:digit:]]*", "a28",  },
+  { 2, 3, "[[:digit:]][[:digit:]]*", "a28",  },
+  { 1, 8, "[^[:digit:]]*", "aB 	gH,",  },
+  { 1, 7, "[[:graph:]]*", "aB28gH, ",  },
+  { 1, 3, "[^[:graph:]]*", " 	,",  },
+  { 1, 2, "[[:lower:]]*", "agB",  },
+  { 1, 8, "[^[:lower:]]*", "B2 	8H,a",  },
+  { 1, 8, "[[:print:]]*", "aB2 8gH,	",  },
+  { 1, 2, "[^[:print:]]*", "	 ",  },
+  { 0, 0, NULL, "the expected result for [[:punct:]]* is 2-2 which is wrong" },
+  { 0, 0, "[[:punct:]]*", "a,2",  },
+  { 2, 3, "[[:punct:]][[:punct:]]*", "a,,2",  },
+  { 1, 9, "[^[:punct:]]*", "aB2 	8gH",  },
+  { 1, 3, "[[:space:]]*", " 	\r",  },
+  { 0, 0, NULL, "the expected result for [^[:space:]]* is 2-9 which is wrong" },
+  { 0, 0, "[^[:space:]]*", " aB28gH,	",  },
+  { 2, 9, "[^[:space:]][^[:space:]]*", " aB28gH,	",  },
+  { 0, 0, NULL, "the expected result for [[:upper:]]* is 2-3 which is wrong" },
+  { 0, 0, "[[:upper:]]*", "aBH2",  },
+  { 2, 3, "[[:upper:]][[:upper:]]*", "aBH2",  },
+  { 1, 8, "[^[:upper:]]*", "a2 	8g,B",  },
+  { 0, 0, NULL, "the expected result for [[:xdigit:]]* is 2-5 which is wrong" },
+  { 0, 0, "[[:xdigit:]]*", "gaB28h",  },
+  { 2, 5, "[[:xdigit:]][[:xdigit:]]*", "gaB28h",  },
+  { 0, 0, NULL, "the expected result for [^[:xdigit:]]* is 2-7 which is wrong" },
+  { 2, 7, "[^[:xdigit:]][^[:xdigit:]]*", "a 	gH,2",  },
+  { 0, 0, "GA127", NULL, },
+  { -2, -2, "[b-a]", "abc",  },
+  { 1, 1, "[a-c]", "bbccde",  },
+  { 2, 2, "[a-b]", "-bc",  },
+  { 3, 3, "[a-z0-9]", "AB0",  },
+  { 3, 3, "[^a-b]", "abcde",  },
+  { 3, 3, "[^a-bd-e]", "dec",  },
+  { 1, 1, "[]-a]", "a_b",  },
+  { 2, 2, "[+--]", "a,b",  },
+  { 2, 2, "[--/]", "a.b",  },
+  { 2, 2, "[^---]", "-ab",  },
+  { 3, 3, "[][.-.]-0]", "ab0-]",  },
+  { 3, 3, "[A-[.].]c]", "ab]!",  },
+  { 2, 6, "bc[d-w]xy", "abchxyz",  },
+  { 0, 0, "GA129", NULL, },
+  { 1, 1, "[a-cd-f]", "dbccde",  },
+  { -1, -1, "[a-ce-f]", "dBCCdE",  },
+  { 2, 4, "b[n-zA-M]Y", "absY9Z",  },
+  { 2, 4, "b[n-zA-M]Y", "abGY9Z",  },
+  { 0, 0, "GA130", NULL, },
+  { 3, 3, "[-xy]", "ac-",  },
+  { 2, 4, "c[-xy]D", "ac-D+",  },
+  { 2, 2, "[--/]", "a.b",  },
+  { 2, 4, "c[--/]D", "ac.D+b",  },
+  { 2, 2, "[^-ac]", "abcde-",  },
+  { 1, 3, "a[^-ac]c", "abcde-",  },
+  { 3, 3, "[xy-]", "zc-",  },
+  { 2, 4, "c[xy-]7", "zc-786",  },
+  { 2, 2, "[^ac-]", "abcde-",  },
+  { 2, 4, "a[^ac-]c", "5abcde-",  },
+  { 2, 2, "[+--]", "a,b",  },
+  { 2, 4, "a[+--]B", "Xa,By",  },
+  { 2, 2, "[^---]", "-ab",  },
+  { 4, 6, "X[^---]Y", "X-YXaYXbY",  },
+  { 0, 0, "2.8.3.3  BREs Matching Multiple Characters", NULL, },
+  { 0, 0, "GA131", NULL, },
+  { 3, 4, "cd", "abcdeabcde",  },
+  { 1, 2, "ag*b", "abcde",  },
+  { -1, -1, "[a-c][e-f]", "abcdef",  },
+  { 3, 4, "[a-c][e-f]", "acbedf",  },
+  { 4, 8, "abc*XYZ", "890abXYZ#*",  },
+  { 4, 9, "abc*XYZ", "890abcXYZ#*",  },
+  { 4, 15, "abc*XYZ", "890abcccccccXYZ#*",  },
+  { -1, -1, "abc*XYZ", "890abc*XYZ#*",  },
+  { 0, 0, "GA132", NULL, },
+  { 2, 4, "\\(*bc\\)", "a*bc",  },
+  { 1, 2, "\\(ab\\)", "abcde",  },
+  { 1, 10, "\\(a\\(b\\(c\\(d\\(e\\(f\\(g\\)h\\(i\\(j\\)\\)\\)\\)\\)\\)\\)\\)", "abcdefghijk",  },
+  { 3, 8, "43\\(2\\(6\\)*0\\)AB", "654320ABCD",  },
+  { 3, 9, "43\\(2\\(7\\)*0\\)AB", "6543270ABCD",  },
+  { 3, 12, "43\\(2\\(7\\)*0\\)AB", "6543277770ABCD",  },
+  { 0, 0, "GA133", NULL, },
+  { 1, 10, "\\(a\\(b\\(c\\(d\\(e\\(f\\(g\\)h\\(i\\(j\\)\\)\\)\\)\\)\\)\\)\\)", "abcdefghijk",  },
+  { -1, -1, "\\(a\\(b\\(c\\(d\\(e\\(f\\(g\\)h\\(i\\(k\\)\\)\\)\\)\\)\\)\\)\\)", "abcdefghijk",  },
+  { 0, 0, "GA134", NULL, },
+  { 2, 4, "\\(bb*\\)", "abbbc",  },
+  { 2, 2, "\\(bb*\\)", "ababbbc",  },
+  { 1, 6, "a\\(.*b\\)", "ababbbc",  },
+  { 1, 2, "a\\(b*\\)", "ababbbc",  },
+  { 1, 20, "a\\(.*b\\)c", "axcaxbbbcsxbbbbbbbbc",  },
+  { 0, 0, "GA135", NULL, },
+  { 1, 7, "\\(a\\(b\\(c\\(d\\(e\\)\\)\\)\\)\\)\\4", "abcdededede",  },
+  { 0, 0, NULL, "POSIX does not really specify whether a\\(b\\)*c\\1 matches acb." },
+  { 0, 0, NULL, "back references are supposed to expand to the last match, but what" },
+  { 0, 0, NULL, "if there never was a match as in this case?" },
+  { -1, -1, "a\\(b\\)*c\\1", "acb",  },
+  { 1, 11, "\\(a\\(b\\(c\\(d\\(e\\(f\\(g\\)h\\(i\\(j\\)\\)\\)\\)\\)\\)\\)\\)\\9", "abcdefghijjk",  },
+  { 0, 0, "GA136", NULL, },
+  { 0, 0, NULL, "These two tests have the same problem as the test in GA135.  No match" },
+  { 0, 0, NULL, "of a subexpression, why should the back reference be usable?" },
+  { 0, 0, NULL, "1 2 a\\(b\\)*c\\1 acb" },
+  { 0, 0, NULL, "4 7 a\\(b\\(c\\(d\\(f\\)*\\)\\)\\)\\4¦xYzabcdePQRST" },
+  { -1, -1, "a\\(b\\)*c\\1", "acb",  },
+  { -1, -1, "a\\(b\\(c\\(d\\(f\\)*\\)\\)\\)\\4", "xYzabcdePQRST",  },
+  { 0, 0, "GA137", NULL, },
+  { -2, -2, "\\(a\\(b\\)\\)\\3", "foo",  },
+  { -2, -2, "\\(a\\(b\\)\\)\\(a\\(b\\)\\)\\5", "foo",  },
+  { 0, 0, "GA138", NULL, },
+  { 1, 2, "ag*b", "abcde",  },
+  { 1, 10, "a.*b", "abababvbabc",  },
+  { 2, 5, "b*c", "abbbcdeabbbbbbcde",  },
+  { 2, 5, "bbb*c", "abbbcdeabbbbbbcde",  },
+  { 1, 5, "a\\(b\\)*c\\1", "abbcbbb",  },
+  { -1, -1, "a\\(b\\)*c\\1", "abbdbd",  },
+  { 0, 0, "\\([a-c]*\\)\\1", "abcacdef",  },
+  { 1, 6, "\\([a-c]*\\)\\1", "abcabcabcd",  },
+  { 1, 2, "a^*b", "ab",  },
+  { 1, 5, "a^*b", "a^^^b",  },
+  { 0, 0, "GA139", NULL, },
+  { 1, 2, "a\\{2\\}", "aaaa",  },
+  { 1, 7, "\\([a-c]*\\)\\{0,\\}", "aabcaab",  },
+  { 1, 2, "\\(a\\)\\1\\{1,2\\}", "aabc",  },
+  { 1, 3, "\\(a\\)\\1\\{1,2\\}", "aaaabc",  },
+  { 0, 0, NULL, "the expression \\(\\(a\\)\\1\\)\\{1,2\\} is ill-formed, using \\2" },
+  { 1, 4, "\\(\\(a\\)\\2\\)\\{1,2\\}", "aaaabc",  },
+  { 0, 0, "GA140", NULL, },
+  { 1, 2, "a\\{2\\}", "aaaa",  },
+  { -1, -1, "a\\{2\\}", "abcd",  },
+  { 0, 0, "a\\{0\\}", "aaaa",  },
+  { 1, 64, "a\\{64\\}", "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",  },
+  { 0, 0, "GA141", NULL, },
+  { 1, 7, "\\([a-c]*\\)\\{0,\\}", "aabcaab",  },
+  { 0, 0, NULL, "the expected result for \\([a-c]*\\)\\{2,\\} is failure which isn't correct" },
+  { 1, 3, "\\([a-c]*\\)\\{2,\\}", "abcdefg",  },
+  { 1, 3, "\\([a-c]*\\)\\{1,\\}", "abcdefg",  },
+  { -1, -1, "a\\{64,\\}", "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",  },
+  { 0, 0, "GA142", NULL, },
+  { 1, 3, "a\\{2,3\\}", "aaaa",  },
+  { -1, -1, "a\\{2,3\\}", "abcd",  },
+  { 0, 0, "\\([a-c]*\\)\\{0,0\\}", "foo",  },
+  { 1, 63, "a\\{1,63\\}", "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",  },
+  { 0, 0, "2.8.3.4  BRE Precedence", NULL, },
+  { 0, 0, "GA143", NULL, },
+  { 0, 0, NULL, "There are numerous bugs in the original version." },
+  { 2, 19, "\\^\\[[[.].]]\\\\(\\\\1\\\\)\\*\\\\{1,2\\\\}\\$", "a^[]\\(\\1\\)*\\{1,2\\}$b",  },
+  { 1, 6, "[[=*=]][[=\\=]][[=]=]][[===]][[...]][[:punct:]]", "*\\]=.;",  },
+  { 1, 6, "[$\\(*\\)^]*", "$\\()*^",  },
+  { 1, 1, "[\\1]", "1",  },
+  { 1, 1, "[\\{1,2\\}]", "{",  },
+  { 0, 0, NULL, "the expected result for \\(*\\)*\\1* is 2-2 which isn't correct" },
+  { 0, 0, "\\(*\\)*\\1*", "a*b*11",  },
+  { 2, 3, "\\(*\\)*\\1*b", "a*b*11",  },
+  { 0, 0, NULL, "the expected result for \\(a\\(b\\{1,2\\}\\)\\{1,2\\}\\) is 1-5 which isn't correct" },
+  { 1, 3, "\\(a\\(b\\{1,2\\}\\)\\{1,2\\}\\)", "abbab",  },
+  { 1, 5, "\\(a\\(b\\{1,2\\}\\)\\)\\{1,2\\}", "abbab",  },
+  { 1, 1, "^\\(^\\(^a$\\)$\\)$", "a",  },
+  { 1, 2, "\\(a\\)\\1$", "aa",  },
+  { 1, 3, "ab*", "abb",  },
+  { 1, 4, "ab\\{2,4\\}", "abbbc",  },
+  { 0, 0, "2.8.3.5  BRE Expression Anchoring", NULL, },
+  { 0, 0, "GA144", NULL, },
+  { 1, 1, "^a", "abc",  },
+  { -1, -1, "^b", "abc",  },
+  { -1, -1, "^[a-zA-Z]", "99Nine",  },
+  { 1, 4, "^[a-zA-Z]*", "Nine99",  },
+  { 0, 0, "GA145(1)", NULL, },
+  { 1, 2, "\\(^a\\)\\1", "aabc",  },
+  { -1, -1, "\\(^a\\)\\1", "^a^abc",  },
+  { 1, 2, "\\(^^a\\)", "^a",  },
+  { 1, 1, "\\(^^\\)", "^^",  },
+  { 1, 3, "\\(^abc\\)", "abcdef",  },
+  { -1, -1, "\\(^def\\)", "abcdef",  },
+  { 0, 0, "GA146", NULL, },
+  { 3, 3, "a$", "cba",  },
+  { -1, -1, "a$", "abc",  },
+  { 5, 7, "[a-z]*$", "99ZZxyz",  },
+  { 0, 0, NULL, "the expected result for [a-z]*$ is failure which isn't correct" },
+  { 10, 9, "[a-z]*$", "99ZZxyz99",  },
+  { 3, 3, "$$", "ab$",  },
+  { -1, -1, "$$", "$ab",  },
+  { 3, 3, "\\$$", "ab$",  },
+  { 0, 0, "GA147(1)", NULL, },
+  { -1, -1, "\\(a$\\)\\1", "bcaa",  },
+  { -1, -1, "\\(a$\\)\\1", "ba$",  },
+  { -1, -1, "\\(ab$\\)", "ab$",  },
+  { 1, 2, "\\(ab$\\)", "ab",  },
+  { 4, 6, "\\(def$\\)", "abcdef",  },
+  { -1, -1, "\\(abc$\\)", "abcdef",  },
+  { 0, 0, "GA148", NULL, },
+  { 0, 0, "^$", "",  },
+  { 1, 3, "^abc$", "abc",  },
+  { -1, -1, "^xyz$", "^xyz^",  },
+  { -1, -1, "^234$", "^234$",  },
+  { 1, 9, "^[a-zA-Z0-9]*$", "2aA3bB9zZ",  },
+  { -1, -1, "^[a-z0-9]*$", "2aA3b#B9zZ",  },
diff --git a/src/sed/testsuite/readin.good b/src/sed/testsuite/readin.good
new file mode 100644
index 0000000..479a444
--- /dev/null
+++ b/src/sed/testsuite/readin.good
@@ -0,0 +1,19 @@
+``Democracy will not come today, this year,
+  nor ever through compromise and fear.
+MOO
+  I have as much right as the other fellow has
+  to stand on my two feet and own the land.
+MOO
+  I tire so of hearing people say
+  let things take their course,
+  tomorrow is another day.
+MOO
+  I do not need my freedom when I'm dead.
+MOO
+  I cannot live on tomorrow's bread.
+MOO
+  Freedom is a strong seed
+  planted in a great need.
+MOO
+  I live here, too.
+MOO
diff --git a/src/sed/testsuite/readin.in2 b/src/sed/testsuite/readin.in2
new file mode 100644
index 0000000..fa93196
--- /dev/null
+++ b/src/sed/testsuite/readin.in2
@@ -0,0 +1 @@
+MOO
diff --git a/src/sed/testsuite/readin.inp b/src/sed/testsuite/readin.inp
new file mode 100644
index 0000000..95fb969
--- /dev/null
+++ b/src/sed/testsuite/readin.inp
@@ -0,0 +1,14 @@
+``Democracy will not come today, this year,
+  nor ever through compromise and fear.
+  I have as much right as the other fellow has
+  to stand on my two feet and own the land.
+  I tire so of hearing people say
+  let things take their course,
+  tomorrow is another day.
+  I do not need my freedom when I'm dead.
+  I cannot live on tomorrow's bread.
+  Freedom is a strong seed
+  planted in a great need.
+  I live here, too.
+  I want freedom just as you.''
+    ``The Weary Blues'', Langston Hughes
diff --git a/src/sed/testsuite/readin.sed b/src/sed/testsuite/readin.sed
new file mode 100644
index 0000000..fac07a4
--- /dev/null
+++ b/src/sed/testsuite/readin.sed
@@ -0,0 +1,2 @@
+/\.$/r readin.in2
+/too\.$/q
diff --git a/src/sed/testsuite/recall.good b/src/sed/testsuite/recall.good
new file mode 100644
index 0000000..230cc08
--- /dev/null
+++ b/src/sed/testsuite/recall.good
@@ -0,0 +1,7 @@
+eeefff
+Xeefff
+XYefff
+XYeYff
+XYeYYf
+XYeYYY
+XYeYYY
diff --git a/src/sed/testsuite/recall.inp b/src/sed/testsuite/recall.inp
new file mode 100644
index 0000000..ef34b7e
--- /dev/null
+++ b/src/sed/testsuite/recall.inp
@@ -0,0 +1 @@
+eeefff
diff --git a/src/sed/testsuite/recall.sed b/src/sed/testsuite/recall.sed
new file mode 100644
index 0000000..c1d7f9c
--- /dev/null
+++ b/src/sed/testsuite/recall.sed
@@ -0,0 +1,7 @@
+# Check that the empty regex recalls the last *executed* regex,
+# not the last *compiled* regex
+p
+s/e/X/p
+:x
+s//Y/p
+/f/bx
diff --git a/src/sed/testsuite/recall2.good b/src/sed/testsuite/recall2.good
new file mode 100644
index 0000000..74c01ea
--- /dev/null
+++ b/src/sed/testsuite/recall2.good
@@ -0,0 +1 @@
+>abb<||>abbbb<
diff --git a/src/sed/testsuite/recall2.inp b/src/sed/testsuite/recall2.inp
new file mode 100644
index 0000000..9046d59
--- /dev/null
+++ b/src/sed/testsuite/recall2.inp
@@ -0,0 +1 @@
+ababb||abbbabbbb
diff --git a/src/sed/testsuite/recall2.sed b/src/sed/testsuite/recall2.sed
new file mode 100644
index 0000000..f668773
--- /dev/null
+++ b/src/sed/testsuite/recall2.sed
@@ -0,0 +1,5 @@
+# Starting from sed 4.1.3, regexes are compiled with REG_NOSUB
+# if they are used in an address, so that the matcher does not
+# have to obey leftmost-longest.  The tricky part is to recompile
+# them if they are then used in a substitution.
+/\(ab*\)\+/ s//>\1</g
diff --git a/src/sed/testsuite/runptests.c b/src/sed/testsuite/runptests.c
new file mode 100644
index 0000000..985b1db
--- /dev/null
+++ b/src/sed/testsuite/runptests.c
@@ -0,0 +1,123 @@
+/* POSIX regex testsuite from IEEE 2003.2.
+   Copyright (C) 1998, 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include <sys/types.h>
+#include <regex.h>
+#include <stdio.h>
+#include <string.h>
+
+/* Data structure to describe the tests.  */
+struct test
+{
+  int start;
+  int end;
+  const char *reg;
+  const char *str;
+  int options;
+} tests[] =
+{
+#include "ptestcases.h"
+};
+
+
+int
+main (int argc, char *argv[])
+{
+  size_t cnt;
+  int errors = 0;
+
+  for (cnt = 0; cnt < sizeof (tests) / sizeof (tests[0]); ++cnt)
+    if (tests[cnt].str == NULL)
+      {
+	printf ("\n%s\n%.*s\n", tests[cnt].reg,
+		(int) strlen (tests[cnt].reg),
+		"-----------------------------------------------------");
+      }
+    else if (tests[cnt].reg == NULL)
+	printf ("!!! %s\n", tests[cnt].str);
+    else
+      {
+	regex_t re;
+	regmatch_t match[20];
+	int err;
+
+	printf ("regexp: \"%s\", string: \"%s\" -> ", tests[cnt].reg,
+		tests[cnt].str);
+
+	/* Compile the expression.  */
+	err = regcomp (&re, tests[cnt].reg, tests[cnt].options);
+	if (err != 0)
+	  {
+	    if (tests[cnt].start == -2)
+	      puts ("compiling failed, OK");
+	    else
+	      {
+		char buf[100];
+		regerror (err, &re, buf, sizeof (buf));
+		printf ("FAIL: %s\n", buf);
+		++errors;
+	      }
+
+	    continue;
+	  }
+	else if (tests[cnt].start == -2)
+	  {
+	    puts ("compiling suceeds, FAIL");
+	    errors++;
+	    continue;
+	  }
+
+	/* Run the actual test.  */
+	err = regexec (&re, tests[cnt].str, 20, match, 0);
+
+	if (err != 0)
+	  {
+	    if (tests[cnt].start == -1)
+	      puts ("no match, OK");
+	    else
+	      {
+		puts ("no match, FAIL");
+		++errors;
+	      }
+	  }
+	else
+	  {
+	    if (match[0].rm_so == 0 && tests[cnt].start == 0
+		&& match[0].rm_eo == 0 && tests[cnt].end == 0)
+	      puts ("match, OK");
+	    else if (match[0].rm_so + 1 == tests[cnt].start
+		     && match[0].rm_eo == tests[cnt].end)
+	      puts ("match, OK");
+	    else
+	      {
+		printf ("wrong match (%d to %d): FAIL\n",
+			match[0].rm_so, match[0].rm_eo);
+		++errors;
+	      }
+	  }
+
+	/* Free all resources.  */
+	regfree (&re);
+      }
+
+  printf ("\n%Zu tests, %d errors\n", cnt, errors);
+
+  return errors != 0;
+}
diff --git a/src/sed/testsuite/runtest b/src/sed/testsuite/runtest
new file mode 100755
index 0000000..0134a5d
--- /dev/null
+++ b/src/sed/testsuite/runtest
@@ -0,0 +1,18 @@
+#! /bin/sh
+
+: ${MAKE=make}
+: ${srcdir=.}
+: ${SED="../sed/sed"}
+
+makefile="$srcdir/Makefile.tests"
+test=`echo "$@"| sed 's,.*/,,'`
+
+# As a convenience, suppress the output of make if the test passes
+if $MAKE SED="$SED" srcdir="$srcdir" -f "$makefile" $test > tmp.test 2>&1; then
+  rm -f tmp.test
+else
+  exitcode=$?
+  cat tmp.test
+  rm -f tmp.test
+  exit $exitcode
+fi
diff --git a/src/sed/testsuite/runtests.c b/src/sed/testsuite/runtests.c
new file mode 100644
index 0000000..9d74475
--- /dev/null
+++ b/src/sed/testsuite/runtests.c
@@ -0,0 +1,138 @@
+/***********************************************************
+
+Copyright 1995 by Tom Lord
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of the copyright holder not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+Tom Lord DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+EVENT SHALL TOM LORD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+
+******************************************************************/
+
+
+
+#include <sys/types.h>
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+
+struct a_test
+{
+  int expected;
+  const char * pattern;
+  const unsigned char * data;
+};
+
+static const struct a_test the_tests[] =
+{
+#include "testcases.h"
+  {-1, 0, 0}
+};
+
+
+
+
+static int
+run_a_test (int id, const struct a_test * t)
+{
+  static const char * last_pattern = 0;
+  static regex_t r;
+  int err;
+  char errmsg[100];
+  int x;
+  regmatch_t regs[10];
+
+  if (!last_pattern || strcmp (last_pattern, t->pattern))
+    {
+      if (last_pattern)
+	regfree (&r);
+      last_pattern = t->pattern;
+      err = regcomp (&r, t->pattern, REG_EXTENDED);
+      if (err)
+	{
+	  if (t->expected == 2)
+	    {
+	      puts (" OK.");
+	      return 0;
+	    }
+	  if (last_pattern)
+	    regfree (&r);
+	  last_pattern = NULL;
+	  regerror (err, &r, errmsg, 100);
+	  printf (" FAIL: %s.\n", errmsg);
+	  return 1;
+	}
+      else if (t->expected == 2)
+	{
+	  printf ("test %d\n", id);
+	  printf ("pattern \"%s\" successfull compilation not expected\n",
+		  t->pattern);
+	  return 1;
+	}
+    }
+
+  err = regexec (&r, t->data, 10, regs, 0);
+
+  if (err != t->expected)
+    {
+      printf ("test %d\n", id);
+      printf ("pattern \"%s\" data \"%s\" wanted %d got %d\n",
+	      t->pattern, t->data, t->expected, err);
+      for (x = 0; x < 10; ++x)
+	printf ("reg %d == (%d, %d) %.*s\n",
+		x,
+		regs[x].rm_so,
+		regs[x].rm_eo,
+		regs[x].rm_eo - regs[x].rm_so,
+		t->data + regs[x].rm_so);
+      return 1;
+    }
+  puts (" OK.");
+  return 0;
+}
+
+
+
+int
+main (int argc, char * argv[])
+{
+  int x;
+  int lo;
+  int hi;
+  int res = 0;
+
+  lo = 0;
+  hi = (sizeof (the_tests) / sizeof (the_tests[0])) - 1;
+
+  if (argc > 1)
+    {
+      lo = atoi (argv[1]);
+      hi = lo + 1;
+
+      if (argc > 2)
+	hi = atoi (argv[2]);
+    }
+
+  for (x = lo; x < hi; ++x)
+    {
+      printf ("#%d:", x);
+      res |= run_a_test (x, &the_tests[x]);
+    }
+  return res != 0;
+}
diff --git a/src/sed/testsuite/sep.good b/src/sed/testsuite/sep.good
new file mode 100644
index 0000000..7db0e1e
--- /dev/null
+++ b/src/sed/testsuite/sep.good
@@ -0,0 +1,3 @@
+
+///
+//
diff --git a/src/sed/testsuite/sep.inp b/src/sed/testsuite/sep.inp
new file mode 100644
index 0000000..5795f4b
--- /dev/null
+++ b/src/sed/testsuite/sep.inp
@@ -0,0 +1,3 @@
+miss mary mack mack//mack/ran down/the track  track  track
+slashes\aren't%used enough/in/casual-conversation///
+possibly sentences would be more attractive if they ended in two slashes//
diff --git a/src/sed/testsuite/sep.sed b/src/sed/testsuite/sep.sed
new file mode 100644
index 0000000..4864b81
--- /dev/null
+++ b/src/sed/testsuite/sep.sed
@@ -0,0 +1,4 @@
+# inspired by an autoconf generated configure script.
+s%/[^/][^/]*$%%
+s%[\/][^\/][^\/]*$%%
+s,.*[^\/],,
diff --git a/src/sed/testsuite/space.good b/src/sed/testsuite/space.good
new file mode 100644
index 0000000..9b267aa
--- /dev/null
+++ b/src/sed/testsuite/space.good
@@ -0,0 +1,2 @@
+Hello_World_!
+SecondXXine__of_tests
diff --git a/src/sed/testsuite/space.inp b/src/sed/testsuite/space.inp
new file mode 100644
index 0000000..83b0adb
--- /dev/null
+++ b/src/sed/testsuite/space.inp
@@ -0,0 +1,2 @@
+Hello World	!
+Second_line_ of tests
diff --git a/src/sed/testsuite/space.sed b/src/sed/testsuite/space.sed
new file mode 100644
index 0000000..0bfa522
--- /dev/null
+++ b/src/sed/testsuite/space.sed
@@ -0,0 +1 @@
+s/_\S/XX/g;s/\s/_/g
diff --git a/src/sed/testsuite/subwrite.inp b/src/sed/testsuite/subwrite.inp
new file mode 100644
index 0000000..3e910cc
--- /dev/null
+++ b/src/sed/testsuite/subwrite.inp
@@ -0,0 +1,4 @@
+Not some church, and not the state,
+Not some dark capricious fate.
+Who you are, and when you lose,
+Comes only from the things you choose.
diff --git a/src/sed/testsuite/subwrite.sed b/src/sed/testsuite/subwrite.sed
new file mode 100644
index 0000000..1a4a01d
--- /dev/null
+++ b/src/sed/testsuite/subwrite.sed
@@ -0,0 +1 @@
+s/you/YoU/w subwrite.wout
diff --git a/src/sed/testsuite/subwrt1.good b/src/sed/testsuite/subwrt1.good
new file mode 100644
index 0000000..560b698
--- /dev/null
+++ b/src/sed/testsuite/subwrt1.good
@@ -0,0 +1,4 @@
+Not some church, and not the state,
+Not some dark capricious fate.
+Who YoU are, and when you lose,
+Comes only from the things YoU choose.
diff --git a/src/sed/testsuite/subwrt2.good b/src/sed/testsuite/subwrt2.good
new file mode 100644
index 0000000..c87bb68
--- /dev/null
+++ b/src/sed/testsuite/subwrt2.good
@@ -0,0 +1,2 @@
+Who YoU are, and when you lose,
+Comes only from the things YoU choose.
diff --git a/src/sed/testsuite/testcases.h b/src/sed/testsuite/testcases.h
new file mode 100644
index 0000000..834f530
--- /dev/null
+++ b/src/sed/testsuite/testcases.h
@@ -0,0 +1,167 @@
+  {0, "(.*)*\\1", "xx"},
+  {0, "^", ""},
+  {0, "$", ""},
+  {0, "^$", ""},
+  {0, "^a$", "a"},
+  {0, "abc", "abc"},
+  {1, "abc", "xbc"},
+  {1, "abc", "axc"},
+  {1, "abc", "abx"},
+  {0, "abc", "xabcy"},
+  {0, "abc", "ababc"},
+  {0, "ab*c", "abc"},
+  {0, "ab*bc", "abc"},
+  {0, "ab*bc", "abbc"},
+  {0, "ab*bc", "abbbbc"},
+  {0, "ab+bc", "abbc"},
+  {1, "ab+bc", "abc"},
+  {1, "ab+bc", "abq"},
+  {0, "ab+bc", "abbbbc"},
+  {0, "ab?bc", "abbc"},
+  {0, "ab?bc", "abc"},
+  {1, "ab?bc", "abbbbc"},
+  {0, "ab?c", "abc"},
+  {0, "^abc$", "abc"},
+  {1, "^abc$", "abcc"},
+  {0, "^abc", "abcc"},
+  {1, "^abc$", "aabc"},
+  {0, "abc$", "aabc"},
+  {0, "^", "abc"},
+  {0, "$", "abc"},
+  {0, "a.c", "abc"},
+  {0, "a.c", "axc"},
+  {0, "a.*c", "axyzc"},
+  {1, "a.*c", "axyzd"},
+  {1, "a[bc]d", "abc"},
+  {0, "a[bc]d", "abd"},
+  {1, "a[b-d]e", "abd"},
+  {0, "a[b-d]e", "ace"},
+  {0, "a[b-d]", "aac"},
+  {0, "a[-b]", "a-"},
+  {0, "a[b-]", "a-"},
+  {2, "a[b-a]", "-"},
+  {2, "a[]b", "-"},
+  {2, "a[", "-"},
+  {0, "a]", "a]"},
+  {0, "a[]]b", "a]b"},
+  {0, "a[^bc]d", "aed"},
+  {1, "a[^bc]d", "abd"},
+  {0, "a[^-b]c", "adc"},
+  {1, "a[^-b]c", "a-c"},
+  {1, "a[^]b]c", "a]c"},
+  {0, "a[^]b]c", "adc"},
+  {0, "ab|cd", "abc"},
+  {0, "ab|cd", "abcd"},
+  {0, "()ef", "def"},
+  {0, "()*", "-"},
+  {2, "*a", "-"},
+  {2, "^*", "-"},
+  {2, "$*", "-"},
+  {2, "(*)b", "-"},
+  {1, "$b", "b"},
+  {2, "a\\", "-"},
+  {0, "a\\(b", "a(b"},
+  {0, "a\\(*b", "ab"},
+  {0, "a\\(*b", "a((b"},
+  {1, "a\\x", "a\\x"},
+  {1, "abc)", "-"},
+  {2, "(abc", "-"},
+  {0, "((a))", "abc"},
+  {0, "(a)b(c)", "abc"},
+  {0, "a+b+c", "aabbabc"},
+  {0, "a**", "-"},
+  {0, "a*?", "-"},
+  {0, "(a*)*", "-"},
+  {0, "(a*)+", "-"},
+  {0, "(a|)*", "-"},
+  {0, "(a*|b)*", "-"},
+  {0, "(a+|b)*", "ab"},
+  {0, "(a+|b)+", "ab"},
+  {0, "(a+|b)?", "ab"},
+  {0, "[^ab]*", "cde"},
+  {0, "(^)*", "-"},
+  {0, "(ab|)*", "-"},
+  {2, ")(", "-"},
+  {1, "abc", ""},
+  {1, "abc", ""},
+  {0, "a*", ""},
+  {0, "([abc])*d", "abbbcd"},
+  {0, "([abc])*bcd", "abcd"},
+  {0, "a|b|c|d|e", "e"},
+  {0, "(a|b|c|d|e)f", "ef"},
+  {0, "((a*|b))*", "-"},
+  {0, "abcd*efg", "abcdefg"},
+  {0, "ab*", "xabyabbbz"},
+  {0, "ab*", "xayabbbz"},
+  {0, "(ab|cd)e", "abcde"},
+  {0, "[abhgefdc]ij", "hij"},
+  {1, "^(ab|cd)e", "abcde"},
+  {0, "(abc|)ef", "abcdef"},
+  {0, "(a|b)c*d", "abcd"},
+  {0, "(ab|ab*)bc", "abc"},
+  {0, "a([bc]*)c*", "abc"},
+  {0, "a([bc]*)(c*d)", "abcd"},
+  {0, "a([bc]+)(c*d)", "abcd"},
+  {0, "a([bc]*)(c+d)", "abcd"},
+  {0, "a[bcd]*dcdcde", "adcdcde"},
+  {1, "a[bcd]+dcdcde", "adcdcde"},
+  {0, "(ab|a)b*c", "abc"},
+  {0, "((a)(b)c)(d)", "abcd"},
+  {0, "[A-Za-z_][A-Za-z0-9_]*", "alpha"},
+  {0, "^a(bc+|b[eh])g|.h$", "abh"},
+  {0, "(bc+d$|ef*g.|h?i(j|k))", "effgz"},
+  {0, "(bc+d$|ef*g.|h?i(j|k))", "ij"},
+  {1, "(bc+d$|ef*g.|h?i(j|k))", "effg"},
+  {1, "(bc+d$|ef*g.|h?i(j|k))", "bcdd"},
+  {0, "(bc+d$|ef*g.|h?i(j|k))", "reffgz"},
+  {1, "((((((((((a))))))))))", "-"},
+  {0, "(((((((((a)))))))))", "a"},
+  {1, "multiple words of text", "uh-uh"},
+  {0, "multiple words", "multiple words, yeah"},
+  {0, "(.*)c(.*)", "abcde"},
+  {1, "\\((.*),", "(.*)\\)"},
+  {1, "[k]", "ab"},
+  {0, "abcd", "abcd"},
+  {0, "a(bc)d", "abcd"},
+  {0, "a[
-]?c", "ac"},
+  {0, "(....).*\\1", "beriberi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar Qaddafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Mo'ammar Gadhafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar Kaddafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar Qadhafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Moammar El Kadhafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar Gadafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Mu'ammar al-Qadafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Moamer El Kazzafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Moamar al-Gaddafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Mu'ammar Al Qathafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar Al Qathafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Mo'ammar el-Gadhafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Moamar El Kadhafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar al-Qadhafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Mu'ammar al-Qadhdhafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Mu'ammar Qadafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Moamar Gaddafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Mu'ammar Qadhdhafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar Khaddafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar al-Khaddafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Mu'amar al-Kadafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar Ghaddafy"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar Ghadafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar Ghaddafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muamar Kaddafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar Quathafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muammar Gheddafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Muamar Al-Kaddafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Moammar Khadafy "},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Moammar Qudhafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Mu'ammar al-Qaddafi"},
+  {0, "M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy]", "Mulazim Awwal Mu'ammar Muhammad Abu Minyar al-Qadhafi"},
+  {0, "[[:digit:]]+", "01234"},
+  {1, "[[:alpha:]]+", "01234"},
+  {0, "^[[:digit:]]*$", "01234"},
+  {1, "^[[:digit:]]*$", "01234a"},
+  {0, "^[[:alnum:]]*$", "01234a"},
+  {0, "^[[:xdigit:]]*$", "01234a"},
+  {1, "^[[:xdigit:]]*$", "01234g"},
+  {0, "^[[:alnum:][:space:]]*$", "Hello world"},
diff --git a/src/sed/testsuite/tst-boost.c b/src/sed/testsuite/tst-boost.c
new file mode 100644
index 0000000..117ac9b
--- /dev/null
+++ b/src/sed/testsuite/tst-boost.c
@@ -0,0 +1,233 @@
+/* Regular expression tests.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+#ifdef HAVE_MCHECK_H
+#include <mcheck.h>
+#endif
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void
+frob_escapes (char *src, int pattern)
+{
+  char *dst;
+
+  for (dst = src; *src != '\0'; dst++, src++)
+    {
+      if (*src == '\\')
+	{
+	  switch (src[1])
+	    {
+	    case 't':
+	      src++;
+	      *dst = '\t';
+	      continue;
+	    case 'n':
+	      src++;
+	      *dst = '\n';
+	      continue;
+	    case 'r':
+	      src++;
+	      *dst = '\r';
+	      continue;
+	    case '\\':
+	    case '^':
+	    case '{':
+	    case '|':
+	    case '}':
+	      if (!pattern)
+		{
+		  src++;
+		  *dst = *src;
+		  continue;
+		}
+	      break;
+	    }
+	}
+      if (src != dst)
+	*dst = *src;
+    }
+  *dst = '\0';
+}
+
+int
+main (int argc, char **argv)
+{
+  int ret = 0, n;
+  char *line = NULL;
+  size_t line_len = 0;
+  ssize_t len;
+  FILE *f;
+  char *pattern, *string;
+  int flags = REG_EXTENDED;
+  int eflags = 0;
+  regex_t re;
+  regmatch_t rm[20];
+
+#ifdef HAVE_MCHECK_H
+  mtrace ();
+#endif
+
+  if (argc < 2)
+    {
+      fprintf (stderr, "Missing test filename\n");
+      return 1;
+    }
+
+  f = fopen (argv[1], "r");
+  if (f == NULL)
+    {
+      fprintf (stderr, "Couldn't open %s\n", argv[1]);
+      return 1;
+    }
+
+  while ((len = getline (&line, &line_len, f)) > 0)
+    {
+      char *p, *q;
+      int i;
+
+      if (line[len - 1] == '\n')
+	line[--len] = '\0';
+
+      puts (line);
+
+      if (line[0] == ';')
+	continue;
+
+      if (line[0] == '\0')
+	continue;
+
+      if (line[0] == '-')
+	{
+	  if (strstr (line, "REG_BASIC"))
+	    flags = 0;
+	  else
+	    flags = REG_EXTENDED;
+	  if (strstr (line, "REG_ICASE"))
+	    flags |= REG_ICASE;
+	  if (strstr (line, "REG_NEWLINE"))
+	    flags |= REG_NEWLINE;
+	  eflags = 0;
+	  if (strstr (line, "REG_NOTBOL"))
+	    eflags |= REG_NOTBOL;
+	  if (strstr (line, "REG_NOTEOL"))
+	    eflags |= REG_NOTEOL;
+	  continue;
+	}
+
+      pattern = line + strspn (line, " \t");
+      if (*pattern == '\0')
+	continue;
+      p = pattern + strcspn (pattern, " \t");
+      if (*p == '\0')
+	continue;
+      *p++ = '\0';
+
+      string = p + strspn (p, " \t");
+      if (*string == '\0')
+	continue;
+      if (*string == '"')
+	{
+	  string++;
+	  p = strchr (string, '"');
+	  if (p == NULL)
+	    continue;
+	  *p++ = '\0';
+	}
+      else
+	{
+	  p = string + strcspn (string, " \t");
+	  if (*string == '!')
+	    string = NULL;
+	  else if (*p == '\0')
+	    continue;
+	  else
+	    *p++ = '\0';
+	}
+
+      frob_escapes (pattern, 1);
+      if (string != NULL)
+	frob_escapes (string, 0);
+
+      n = regcomp (&re, pattern, flags);
+      if (n != 0)
+	{
+	  if (string != NULL)
+	    {
+	      char buf[500];
+	      regerror (n, &re, buf, sizeof (buf));
+	      printf ("FAIL regcomp unexpectedly failed: %s\n",
+		      buf);
+	      ret = 1;
+	    }
+	  continue;
+	}
+      else if (string == NULL)
+	{
+	  regfree (&re);
+	  puts ("FAIL regcomp unpexpectedly succeeded");
+	  ret = 1;
+	  continue;
+	}
+
+      if (regexec (&re, string, 20, rm, eflags))
+	{
+	  for (i = 0; i < 20; ++i)
+	    {
+	      rm[i].rm_so = -1;
+	      rm[i].rm_eo = -1;
+	    }
+	}
+
+      regfree (&re);
+
+      for (i = 0; i < 20 && *p != '\0'; ++i)
+	{
+	  int rm_so, rm_eo;
+
+	  rm_so = strtol (p, &q, 10);
+	  if (p == q)
+	    break;
+	  p = q;
+
+	  rm_eo = strtol (p, &q, 10);
+	  if (p == q)
+	    break;
+	  p = q;
+
+	  if (rm[i].rm_so != rm_so || rm[i].rm_eo != rm_eo)
+	    {
+	      printf ("FAIL rm[%d] %d..%d != expected %d..%d\n",
+		      i, rm[i].rm_so, rm[i].rm_eo, rm_so, rm_eo);
+	      ret = 1;
+	      break;
+	    }
+	}
+    }
+
+  free (line);
+  fclose (f);
+  return ret;
+}
diff --git a/src/sed/testsuite/tst-pcre.c b/src/sed/testsuite/tst-pcre.c
new file mode 100644
index 0000000..c865091
--- /dev/null
+++ b/src/sed/testsuite/tst-pcre.c
@@ -0,0 +1,247 @@
+/* Regular expression tests.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+#ifdef HAVE_MCHECK_H
+#include <mcheck.h>
+#endif
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main (int argc, char **argv)
+{
+  int ret = 0;
+  char *line = NULL;
+  size_t line_len = 0;
+  ssize_t len;
+  FILE *f;
+  char *pattern = NULL, *string = NULL;
+  regmatch_t rm[20];
+  size_t pattern_alloced = 0, string_alloced = 0;
+  int ignorecase = 0;
+  int pattern_valid = 0, rm_valid = 0;
+  size_t linenum;
+
+#ifdef HAVE_MCHECK_H
+  mtrace ();
+#endif
+
+  if (argc < 2)
+    {
+      fprintf (stderr, "Missing test filename\n");
+      return 1;
+    }
+
+  f = fopen (argv[1], "r");
+  if (f == NULL)
+    {
+      fprintf (stderr, "Couldn't open %s\n", argv[1]);
+      return 1;
+    }
+
+  if ((len = getline (&line, &line_len, f)) <= 0
+      || strncmp (line, "# PCRE", 6) != 0)
+    {
+      fprintf (stderr, "Not a PCRE test file\n");
+      fclose (f);
+      free (line);
+      return 1;
+    }
+
+  linenum = 1;
+
+  while ((len = getline (&line, &line_len, f)) > 0)
+    {
+      char *p;
+      unsigned long num;
+
+      ++linenum;
+
+      if (line[len - 1] == '\n')
+	line[--len] = '\0';
+
+      if (line[0] == '#')
+	continue;
+
+      if (line[0] == '\0')
+	{
+	  /* End of test.  */
+	  ignorecase = 0;
+	  pattern_valid = 0;
+	  rm_valid = 0;
+	  continue;
+	}
+
+      if (line[0] == '/')
+	{
+	  /* Pattern.  */
+	  p = strrchr (line + 1, '/');
+
+	  pattern_valid = 0;
+	  rm_valid = 0;
+	  if (p == NULL)
+	    {
+	      printf ("%lu: Invalid pattern line: %s\n", linenum, line);
+	      ret = 1;
+	      continue;
+	    }
+
+	  if (p[1] == 'i' && p[2] == '\0')
+	    ignorecase = 1;
+	  else if (p[1] != '\0')
+	    {
+	      printf ("%lu: Invalid pattern line: %s\n", linenum, line);
+	      ret = 1;
+	      continue;
+	    }
+
+	  if (pattern_alloced < (size_t) (p - line))
+	    {
+	      pattern = realloc (pattern, p - line);
+	      if (pattern == NULL)
+		{
+		  printf ("%lu: Cannot record pattern: %m\n", linenum);
+		  ret = 1;
+		  break;
+		}
+	      pattern_alloced = p - line;
+	    }
+
+	  memcpy (pattern, line + 1, p - line - 1);
+	  pattern[p - line - 1] = '\0';
+	  pattern_valid = 1;
+	  continue;
+	}
+
+      if (strncmp (line, "    ", 4) == 0)
+	{
+	  regex_t re;
+	  int n;
+    
+	  if (!pattern_valid)
+	    {
+	      printf ("%lu: No previous valid pattern %s\n", linenum, line);
+	      continue;
+	    }
+
+	  if (string_alloced < (size_t) (len - 3))
+	    {
+	      string = realloc (string, len - 3);
+	      if (string == NULL)
+		{
+		  printf ("%lu: Cannot record search string: %m\n", linenum);
+		  ret = 1;
+		  break;
+		}
+	      string_alloced = len - 3;
+	    }
+
+	  memcpy (string, line + 4, len - 3);
+
+	  n = regcomp (&re, pattern,
+		       REG_EXTENDED | (ignorecase ? REG_ICASE : 0));
+	  if (n != 0)
+	    {
+	      char buf[500];
+	      regerror (n, &re, buf, sizeof (buf));
+	      printf ("%lu: regcomp failed for %s: %s\n",
+		      linenum, pattern, buf);
+	      ret = 1;
+	      continue;
+	    }
+
+	  if (regexec (&re, string, 20, rm, 0))
+	    {
+	      rm[0].rm_so = -1;
+	      rm[0].rm_eo = -1;
+	    }
+
+	  regfree (&re);
+	  rm_valid = 1;
+	  continue;
+	}
+
+      if (!rm_valid)
+	{
+	  printf ("%lu: No preceeding pattern or search string\n", linenum);
+	  ret = 1;
+	  continue;
+	}
+
+      if (strcmp (line, "No match") == 0)
+	{
+	  if (rm[0].rm_so != -1 || rm[0].rm_eo != -1)
+	    {
+	      printf ("%lu: /%s/ on %s unexpectedly matched %d..%d\n",
+		      linenum, pattern, string, rm[0].rm_so, rm[0].rm_eo);
+	      ret = 1;
+	    }
+
+	  continue;
+	}
+
+      p = line;
+      if (*p == ' ')
+        ++p;
+
+      num = strtoul (p, &p, 10);
+      if (num >= 20 || *p != ':' || p[1] != ' ')
+	{
+	  printf ("%lu: Invalid line %s\n", linenum, line);
+	  ret = 1;
+	  continue;
+	}
+
+      if (rm[num].rm_so == -1 || rm[num].rm_eo == -1)
+	{
+	  if (strcmp (p + 2, "<unset>") != 0)
+	    {
+	      printf ("%lu: /%s/ on %s unexpectedly failed to match register %ld %d..%d\n",
+		      linenum, pattern, string, num,
+		      rm[num].rm_so, rm[num].rm_eo);
+	      ret = 1;
+	    }
+	  continue;
+	}
+
+      if (rm[num].rm_eo < rm[num].rm_so
+	  || rm[num].rm_eo - rm[num].rm_so != len - (p + 2 - line)
+	  || strncmp (p + 2, string + rm[num].rm_so,
+		      rm[num].rm_eo - rm[num].rm_so) != 0)
+	{
+	  printf ("%lu: /%s/ on %s unexpectedly failed to match %s for register %ld %d..%d\n",
+		  linenum, pattern, string, p + 2, num,
+		  rm[num].rm_so, rm[num].rm_eo);
+	  ret = 1;
+	  continue;
+	}
+    }
+
+  free (pattern);
+  free (string);
+  free (line);
+  fclose (f);
+  return ret;
+}
diff --git a/src/sed/testsuite/tst-regex2.c b/src/sed/testsuite/tst-regex2.c
new file mode 100644
index 0000000..6f487f8
--- /dev/null
+++ b/src/sed/testsuite/tst-regex2.c
@@ -0,0 +1,205 @@
+#include <errno.h>
+#include <fcntl.h>
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+int
+main (int argc, char *argv[])
+{
+  struct stat st;
+  static const char *pat[] = {
+    ".?.?.?.?.?.?.?argc",
+    "(.?)(.?)(.?)(.?)(.?)(.?)(.?)argc",
+    "((((((((((.?))))))))))((((((((((.?))))))))))((((((((((.?))))))))))"
+    "((((((((((.?))))))))))((((((((((.?))))))))))((((((((((.?))))))))))"
+    "((((((((((.?))))))))))argc" };
+
+  size_t len;
+  int fd;
+  int testno, i, j, k, l;
+  char *string;
+  char *buf;
+
+  if (argc < 2)
+    abort ();
+
+  fd = open (argv[1], O_RDONLY);
+  if (fd < 0)
+    {
+      printf ("Couldn't open %s: %s\n", argv[1], strerror (errno));
+      abort ();
+    }
+
+  if (fstat (fd, &st) < 0)
+    {
+      printf ("Couldn't fstat %s: %s\n", argv[1], strerror (errno));
+      abort ();
+    }
+
+  buf = malloc (st.st_size + 1);
+  if (buf == NULL)
+    {
+      printf ("Couldn't allocate buffer: %s\n", strerror (errno));
+      abort ();
+    }
+
+  if (read (fd, buf, st.st_size) != (ssize_t) st.st_size)
+    {
+      printf ("Couldn't read %s", argv[1]);
+      abort ();
+    }
+
+  close (fd);
+  buf[st.st_size] = '\0';
+
+  string = buf;
+  len = st.st_size;
+
+  for (testno = 0; testno < 4; ++testno)
+    for (i = 0; i < sizeof (pat) / sizeof (pat[0]); ++i)
+      {
+	regex_t rbuf;
+	struct re_pattern_buffer rpbuf;
+	int err;
+
+	printf ("test %d pattern %d", testno, i);
+	if (testno < 2)
+	  {
+	    err = regcomp (&rbuf, pat[i],
+			   REG_EXTENDED | (testno ? REG_NOSUB : 0));
+	    if (err != 0)
+	      {
+		char errstr[300];
+		putchar ('\n');
+		regerror (err, &rbuf, errstr, sizeof (errstr));
+		puts (errstr);
+		return err;
+	      }
+	  }
+	else
+	  {
+	    const char *s;
+	    re_set_syntax (RE_SYNTAX_POSIX_EGREP
+			   | (testno == 3 ? RE_NO_SUB : 0));
+
+	    memset (&rpbuf, 0, sizeof (rpbuf));
+	    s = re_compile_pattern (pat[i], strlen (pat[i]), &rpbuf);
+	    if (s != NULL)
+	      {
+		printf ("\n%s\n", s);
+		abort ();
+	      }
+
+	    /* Just so that this can be tested with earlier glibc as well.  */
+	    if (testno == 3)
+	      rpbuf.no_sub = 1;
+	  }
+
+      if (testno < 2)
+	{
+	  regmatch_t pmatch[71];
+	  err = regexec (&rbuf, string, 71, pmatch, 0);
+	  if (err == REG_NOMATCH)
+	    {
+	      puts ("\nregexec failed");
+	      abort ();
+	    }
+
+	  if (testno == 0)
+	    {
+	      if (pmatch[0].rm_eo != pmatch[0].rm_so + 11
+		  || pmatch[0].rm_eo > len
+		  || string + pmatch[0].rm_so >= strchr (string, 'R')
+		  || strncmp (string + pmatch[0].rm_so,
+			      "n (int argc",
+			      sizeof "n (int argc" - 1)
+		     != 0)
+		{
+		  puts ("\nregexec without REG_NOSUB did not find the correct match");
+		  abort ();
+		}
+
+	      if (i > 0)
+		for (j = 0, l = 1; j < 7; ++j)
+		  for (k = 0; k < (i == 1 ? 1 : 10); ++k, ++l)
+		    if (pmatch[l].rm_so != pmatch[0].rm_so + j
+			|| pmatch[l].rm_eo != pmatch[l].rm_so + 1)
+		      {
+			printf ("\npmatch[%d] incorrect\n", l);
+			abort ();
+		      }
+	    }
+	}
+      else
+	{
+	  struct re_registers regs;
+	  int match;
+
+	  memset (&regs, 0, sizeof (regs));
+	  match = re_search (&rpbuf, string, len, 0, len,
+				 &regs);
+	  if (match < 0)
+	    {
+	      puts ("\nre_search failed");
+	      abort ();
+	    }
+
+	  if (match + 11 > len
+	      || string + match >= strchr (string, 'R')
+	      || strncmp (string + match,
+			  "n (int argc",
+			  sizeof "n (int argc" - 1)
+		  != 0)
+	    {
+	      puts ("\nre_search did not find the correct match");
+	      abort ();
+	    }
+
+	  if (testno == 2)
+	    {
+	      if (regs.num_regs != 2 + (i == 0 ? 0 : i == 1 ? 7 : 70))
+		{
+		  printf ("\nincorrect num_regs %d\n", regs.num_regs);
+		  abort ();
+		}
+
+	      if (regs.start[0] != match || regs.end[0] != match + 11)
+		{
+		  printf ("\nincorrect regs.{start,end}[0] = { %d, %d}\n",
+			  regs.start[0], regs.end[0]);
+		  abort ();
+		}
+
+	      if (regs.start[regs.num_regs - 1] != -1
+		  || regs.end[regs.num_regs - 1] != -1)
+		{
+		  puts ("\nincorrect regs.{start,end}[num_regs - 1]");
+		  abort ();
+		}
+
+	      if (i > 0)
+		for (j = 0, l = 1; j < 7; ++j)
+		  for (k = 0; k < (i == 1 ? 1 : 10); ++k, ++l)
+		    if (regs.start[l] != match + j
+			|| regs.end[l] != regs.start[l] + 1)
+		      {
+			printf ("\nregs.{start,end}[%d] incorrect\n", l);
+			abort ();
+		      }
+	    }
+	}
+
+      putchar ('\n');
+
+      if (testno < 2)
+	regfree (&rbuf);
+      else
+	regfree (&rpbuf);
+    }
+
+  exit (0);
+}
diff --git a/src/sed/testsuite/tst-rxspencer.c b/src/sed/testsuite/tst-rxspencer.c
new file mode 100644
index 0000000..be4d55a
--- /dev/null
+++ b/src/sed/testsuite/tst-rxspencer.c
@@ -0,0 +1,558 @@
+/* Regular expression tests.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+#ifdef HAVE_MCHECK_H
+#include <mcheck.h>
+#endif
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <locale.h>
+#include <getopt.h>
+
+static void
+replace_special_chars (char *str)
+{
+  for (; (str = strpbrk (str, "NTSZ")) != NULL; ++str)
+    switch (*str)
+      {
+      case 'N': *str = '\n'; break;
+      case 'T': *str = '\t'; break;
+      case 'S': *str = ' '; break;
+      case 'Z': *str = '\0'; break;
+      }
+}
+
+static void
+glibc_re_syntax (char *str)
+{
+  char *p, *end = strchr (str, '\0') + 1;
+
+  /* Replace [[:<:]] with \< and [[:>:]] with \>.  */
+  for (p = str; (p = strstr (p, "[[:")) != NULL; )
+    if ((p[3] == '<' || p[3] == '>') && strncmp (p + 4, ":]]", 3) == 0)
+      {
+        p[0] = '\\';
+        p[1] = p[3];
+        memmove (p + 2, p + 7, end - p - 7);
+        end -= 5;
+        p += 2;
+      }
+    else
+      p += 3;
+}
+
+static char *
+mb_replace (char *dst, const char c)
+{
+  switch (c)
+    {
+    /* Replace a with \'a and A with \'A.  */
+    case 'a':
+      *dst++ = '\xc3';
+      *dst++ = '\xa1';
+      break;
+    case 'A':
+      *dst++ = '\xc3';
+      *dst++ = '\x81';
+      break;
+    /* Replace b with \v{c} and B with \v{C}.  */
+    case 'b':
+      *dst++ = '\xc4';
+      *dst++ = '\x8d';
+      break;
+    case 'B':
+      *dst++ = '\xc4';
+      *dst++ = '\x8c';
+      break;
+    /* Replace c with \v{d} and C with \v{D}.  */
+    case 'c':
+      *dst++ = '\xc4';
+      *dst++ = '\x8f';
+      break;
+    case 'C':
+      *dst++ = '\xc4';
+      *dst++ = '\x8e';
+      break;
+    /* Replace d with \'e and D with \'E.  */
+    case 'd':
+      *dst++ = '\xc3';
+      *dst++ = '\xa9';
+      break;
+    case 'D':
+      *dst++ = '\xc3';
+      *dst++ = '\x89';
+      break;
+    }
+  return dst;
+}
+
+static char *
+mb_frob_string (const char *str, const char *letters)
+{
+  char *ret, *dst;
+  const char *src;
+
+  if (str == NULL)
+    return NULL;
+
+  ret = malloc (2 * strlen (str) + 1);
+  if (ret == NULL)
+    return NULL;
+
+  for (src = str, dst = ret; *src; ++src)
+    if (strchr (letters, *src))
+      dst = mb_replace (dst, *src);
+    else
+      *dst++ = *src;
+  *dst = '\0';
+  return ret;
+}
+
+/* Like mb_frob_string, but don't replace anything between
+   [: and :], [. and .] or [= and =].  */
+
+static char *
+mb_frob_pattern (const char *str, const char *letters)
+{
+  char *ret, *dst;
+  const char *src;
+  int in_class = 0;
+
+  if (str == NULL)
+    return NULL;
+
+  ret = malloc (2 * strlen (str) + 1);
+  if (ret == NULL)
+    return NULL;
+
+  for (src = str, dst = ret; *src; ++src)
+    if (!in_class && strchr (letters, *src))
+      dst = mb_replace (dst, *src);
+    else
+      {
+	if (!in_class && *src == '[' && strchr (":.=", src[1]))
+	  in_class = 1;
+	else if (in_class && *src == ']' && strchr (":.=", src[-1]))
+	  in_class = 0;
+	*dst++ = *src;
+      }
+  *dst = '\0';
+  return ret;
+}
+
+static int
+check_match (regmatch_t *rm, int idx, const char *string,
+	     const char *match, const char *fail)
+{
+  if (match[0] == '-' && match[1] == '\0')
+    {
+      if (rm[idx].rm_so == -1 && rm[idx].rm_eo == -1)
+	return 0;
+      printf ("%s rm[%d] unexpectedly matched\n", fail, idx);
+      return 1;
+    }
+
+  if (rm[idx].rm_so == -1 || rm[idx].rm_eo == -1)
+    {
+      printf ("%s rm[%d] unexpectedly did not match\n", fail, idx);
+      return 1;
+    }
+
+  if (match[0] == '@')
+    {
+      if (rm[idx].rm_so != rm[idx].rm_eo)
+	{
+	  printf ("%s rm[%d] not empty\n", fail, idx);
+	  return 1;
+	}
+
+      if (strncmp (string + rm[idx].rm_so, match + 1, strlen (match + 1)
+						      ? strlen (match + 1) : 1))
+	{
+	  printf ("%s rm[%d] not matching %s\n", fail, idx, match);
+	  return 1;
+	}
+      return 0;
+    }
+
+  if (rm[idx].rm_eo - rm[idx].rm_so != strlen (match)
+      || strncmp (string + rm[idx].rm_so, match,
+		  rm[idx].rm_eo - rm[idx].rm_so))
+    {
+      printf ("%s rm[%d] not matching %s\n", fail, idx, match);
+      return 1;
+    }
+
+  return 0;
+}
+
+static int
+test (const char *pattern, int cflags, const char *string, int eflags,
+      char *expect, char *matches, const char *fail)
+{
+  regex_t re;
+  regmatch_t rm[10];
+  int n, ret = 0;
+
+  n = regcomp (&re, pattern, cflags);
+  if (n != 0)
+    {
+      char buf[500];
+      if (eflags == -1)
+	{
+	  static struct { reg_errcode_t code; const char *name; } codes []
+#define C(x) { REG_##x, #x }
+	    = { C(NOERROR), C(NOMATCH), C(BADPAT), C(ECOLLATE),
+		C(ECTYPE), C(EESCAPE), C(ESUBREG), C(EBRACK),
+		C(EPAREN), C(EBRACE), C(BADBR), C(ERANGE),
+		C(ESPACE), C(BADRPT) };
+
+	  int i;
+	  for (i = 0; i < sizeof (codes) / sizeof (codes[0]); ++i)
+	    if (n == codes[i].code)
+	      {
+		if (strcmp (string, codes[i].name))
+		  {
+		    printf ("%s regcomp returned REG_%s (expected REG_%s)\n",
+			    fail, codes[i].name, string);
+		    return 1;
+		  }
+	        return 0;
+	      }
+
+	  printf ("%s regcomp return value REG_%d\n", fail, n);
+	  return 1;
+	}
+
+      regerror (n, &re, buf, sizeof (buf));
+      printf ("%s regcomp failed: %s\n", fail, buf);
+      return 1;
+    }
+
+  if (eflags == -1)
+    {
+      regfree (&re);
+
+      /* The test case file assumes something only guaranteed by the
+	 rxspencer regex implementation.  Namely that for empty
+	 expressions regcomp() return REG_EMPTY.  This is not the case
+	 for us and so we ignore this error.  */
+      if (strcmp (string, "EMPTY") == 0)
+	return 0;
+
+      printf ("%s regcomp unexpectedly succeeded\n", fail);
+      return 1;
+    }
+
+  if (regexec (&re, string, 10, rm, eflags))
+    {
+      regfree (&re);
+      if (expect == NULL)
+	return 0;
+      printf ("%s regexec failed\n", fail);
+      return 1;
+    }
+
+  regfree (&re);
+
+  if (expect == NULL)
+    {
+      printf ("%s regexec unexpectedly succeeded\n", fail);
+      return 1;
+    }
+
+  if (cflags & REG_NOSUB)
+    return 0;
+
+  ret = check_match (rm, 0, string, expect, fail);
+  if (matches == NULL)
+    return ret;
+
+  for (n = 1; ret == 0 && n < 10; ++n)
+    {
+      char *p = NULL;
+
+      if (matches)
+	{
+	  p = strchr (matches, ',');
+	  if (p != NULL)
+	    *p = '\0';
+	}
+      ret = check_match (rm, n, string, matches ? matches : "-", fail);
+      if (p)
+	{
+	  *p = ',';
+	  matches = p + 1;
+	}
+      else
+	matches = NULL;
+    }
+
+  return ret;
+}
+
+static int
+mb_test (const char *pattern, int cflags, const char *string, int eflags,
+	 char *expect, const char *matches, const char *letters,
+	 const char *fail)
+{
+  char *pattern_mb = mb_frob_pattern (pattern, letters);
+  const char *string_mb
+    = eflags == -1 ? string : mb_frob_string (string, letters);
+  char *expect_mb = mb_frob_string (expect, letters);
+  char *matches_mb = mb_frob_string (matches, letters);
+  int ret = 0;
+
+  if (!pattern_mb || !string_mb
+      || (expect && !expect_mb) || (matches && !matches_mb))
+    {
+      printf ("%s %m", fail);
+      ret = 1;
+    }
+  else
+    ret = test (pattern_mb, cflags, string_mb, eflags, expect_mb,
+		matches_mb, fail);
+
+  free (matches_mb);
+  free (expect_mb);
+  if (string_mb != string)
+    free ((char *) string_mb);
+  free (pattern_mb);
+  return ret;
+}
+
+static int
+mb_tests (const char *pattern, int cflags, const char *string, int eflags,
+	  char *expect, const char *matches)
+{
+  int ret = 0;
+  int i;
+  char letters[9], fail[20];
+
+  /* The tests aren't supposed to work with xdigit, since a-dA-D are
+     hex digits while \'a \'A \v{c}\v{C}\v{d}\v{D}\'e \'E are not.  */
+  if (strstr (pattern, "[:xdigit:]"))
+    return 0;
+
+  /* XXX: regex ATM handles only single byte equivalence classes.  */
+  if (strstr (pattern, "[[=b=]]"))
+    return 0;
+
+  for (i = 1; i < 16; ++i)
+    {
+      char *p = letters;
+      if (i & 1)
+	{
+	  if (!strchr (pattern, 'a') && !strchr (string, 'a')
+	      && !strchr (pattern, 'A') && !strchr (string, 'A'))
+	    continue;
+	  *p++ = 'a', *p++ = 'A';
+	}
+      if (i & 2)
+	{
+	  if (!strchr (pattern, 'b') && !strchr (string, 'b')
+	      && !strchr (pattern, 'B') && !strchr (string, 'B'))
+	    continue;
+	  *p++ = 'b', *p++ = 'B';
+	}
+      if (i & 4)
+	{
+	  if (!strchr (pattern, 'c') && !strchr (string, 'c')
+	      && !strchr (pattern, 'C') && !strchr (string, 'C'))
+	    continue;
+	  *p++ = 'c', *p++ = 'C';
+	}
+      if (i & 8)
+	{
+	  if (!strchr (pattern, 'd') && !strchr (string, 'd')
+	      && !strchr (pattern, 'D') && !strchr (string, 'D'))
+	    continue;
+	  *p++ = 'd', *p++ = 'D';
+	}
+      *p++ = '\0';
+      sprintf (fail, "UTF-8 %s FAIL", letters);
+      ret |= mb_test (pattern, cflags, string, eflags, expect, matches,
+		      letters, fail);
+    }
+  return ret;
+}
+
+int
+main (int argc, char **argv)
+{
+  int ret = 0;
+  char *line = NULL;
+  size_t line_len = 0;
+  ssize_t len;
+  FILE *f;
+  static int test_utf8 = 0;
+  static const struct option options[] =
+    {
+      {"utf8",	no_argument,	&test_utf8,	1},
+      {NULL,	0,		NULL,		0 }
+    };
+
+#ifdef HAVE_MCHECK_H
+  mtrace ();
+#endif
+
+  while (getopt_long (argc, argv, "", options, NULL) >= 0);
+
+  if (optind + 1 != argc)
+    {
+      fprintf (stderr, "Missing test filename\n");
+      return 1;
+    }
+
+  f = fopen (argv[optind], "r");
+  if (f == NULL)
+    {
+      fprintf (stderr, "Couldn't open %s\n", argv[optind]);
+      return 1;
+    }
+
+  while ((len = getline (&line, &line_len, f)) > 0)
+    {
+      char *pattern, *flagstr, *string, *expect, *matches, *p;
+      int cflags = REG_EXTENDED, eflags = 0, try_bre_ere = 0;
+
+      if (line[len - 1] == '\n')
+        line[len - 1] = '\0';
+
+      /* Skip comments and empty lines.  */
+      if (*line == '#' || *line == '\0')
+	continue;
+
+      puts (line);
+      fflush (stdout);
+
+      pattern = strtok (line, "\t");
+      if (pattern == NULL)
+        continue;
+
+      if (strcmp (pattern, "\"\"") == 0)
+	pattern += 2;
+
+      flagstr = strtok (NULL, "\t");
+      if (flagstr == NULL)
+        continue;
+
+      string = strtok (NULL, "\t");
+      if (string == NULL)
+        continue;
+
+      if (strcmp (string, "\"\"") == 0)
+	string += 2;
+
+      for (p = flagstr; *p; ++p)
+	switch (*p)
+	  {
+	  case '-':
+	    break;
+	  case 'b':
+	    cflags &= ~REG_EXTENDED;
+	    break;
+	  case '&':
+	    try_bre_ere = 1;
+	    break;
+	  case 'C':
+	    eflags = -1;
+	    break;
+	  case 'i':
+	    cflags |= REG_ICASE;
+	    break;
+	  case 's':
+	    cflags |= REG_NOSUB;
+	    break;
+	  case 'n':
+	    cflags |= REG_NEWLINE;
+	    break;
+	  case '^':
+	    eflags |= REG_NOTBOL;
+	    break;
+	  case '$':
+	    eflags |= REG_NOTEOL;
+	    break;
+	  case 'm':
+	  case 'p':
+	  case '#':
+	    /* Not supported.  */
+	    flagstr = NULL;
+	    break;
+	  }
+
+      if (flagstr == NULL)
+	continue;
+
+      replace_special_chars (pattern);
+      glibc_re_syntax (pattern);
+      if (eflags != -1)
+        replace_special_chars (string);
+
+      expect = strtok (NULL, "\t");
+      matches = NULL;
+      if (expect != NULL)
+        {
+	  replace_special_chars (expect);
+	  matches = strtok (NULL, "\t");
+	  if (matches != NULL)
+	    replace_special_chars (matches);
+        }
+
+      if (setlocale (LC_ALL, "C") == NULL)
+	{
+	  puts ("setlocale C failed");
+	  ret = 1;
+	}
+      if (test (pattern, cflags, string, eflags, expect, matches, "FAIL")
+	  || (try_bre_ere
+	      && test (pattern, cflags & ~REG_EXTENDED, string, eflags,
+		       expect, matches, "FAIL")))
+	ret = 1;
+      else if (test_utf8)
+	{
+	  if (setlocale (LC_ALL, "cs_CZ.UTF-8") == NULL)
+	    {
+	      puts ("setlocale cs_CZ.UTF-8 failed");
+	      ret = 1;
+	    }
+	  else if (test (pattern, cflags, string, eflags, expect, matches,
+			 "UTF-8 FAIL")
+		   || (try_bre_ere
+		       && test (pattern, cflags & ~REG_EXTENDED, string,
+				eflags, expect, matches, "UTF-8 FAIL")))
+	    ret = 1;
+	  else if (mb_tests (pattern, cflags, string, eflags, expect, matches)
+		   || (try_bre_ere
+		       && mb_tests (pattern, cflags & ~REG_EXTENDED, string,
+				    eflags, expect, matches)))
+	    ret = 1;
+	}
+    }
+
+  free (line);
+  fclose (f);
+  return ret;
+}
diff --git a/src/sed/testsuite/uniq.good b/src/sed/testsuite/uniq.good
new file mode 100644
index 0000000..2941bec
--- /dev/null
+++ b/src/sed/testsuite/uniq.good
@@ -0,0 +1,874 @@
+
+#define DPRINTF(p)		/*nothing */
+#define DPRINTF(p) printf p
+#define GETCHAR(c, eptr) c = *eptr;
+#define GETCHARINC(c, eptr) c = *eptr++;
+#define class pcre_class
+#define match_condassert   0x01	/* Called to check a condition assertion */
+#define match_isgroup      0x02	/* Set if start of bracketed group */
+#else
+#endif
+#ifdef DEBUG			/* Sigh. Some compilers never learn. */
+#ifdef DEBUG
+#ifdef __cplusplus
+#include "internal.h"
+&& length - re->max_match_size > start_offset)
+((*ecode++ == OP_BEG_WORD) ? prev_is_word : cur_is_word))
+((md->ctypes[*eptr] & ctype_word) != 0);
+((md->ctypes[eptr[-1]] & ctype_word) != 0);
+(eptr == md->end_subject - 1 && *eptr != '\n'))
+(i.e. keep it out of the loop). Also we can test that there are at least
+(md->ctypes[*eptr++] & ctype_digit) != 0)
+(md->ctypes[*eptr++] & ctype_digit) == 0)
+(md->ctypes[*eptr++] & ctype_space) != 0)
+(md->ctypes[*eptr++] & ctype_space) == 0)
+(md->ctypes[*eptr++] & ctype_word) != 0)
+(md->ctypes[*eptr++] & ctype_word) == 0)
+(offsetcount - 2) * sizeof (int));
+(offsets == NULL && offsetcount > 0))
+(pcre_free) (match_block.offset_vector);
+(pcre_free) (save);
+(re->tables + fcc_offset)[req_char] : req_char;
+*          Match a back-reference                *
+*         Execute a Regular Expression           *
+*         Match from current position            *
+*        Debugging function to print chars       *
+*      Perl-Compatible Regular Expressions       *
+*    Macros and tables for character handling    *
+*************************************************/
+*/
+*iptr = -1;
+*iptr++ = -1;
+*prev == OP_ASSERTBACK || *prev == OP_ASSERTBACK_NOT ||
+*prev == OP_ONCE)
+-----------------------------------------------------------------------------
+-1 => failed to match
+/*
+/* "Once" brackets are like assertion brackets except that after a match,
+/* ... else fall through */
+/* Advance to a possible match for an initial string after study */
+/* Allow compilation as C++ source code, should anybody want to do that. */
+/* Always fail if not enough characters left */
+/* An alternation is the end of a branch; scan along to find the end of the
+/* Assert before internal newline if multiline, or before a terminating
+/* Assertion brackets. Check the alternative branches in turn - the
+/* At the start of a bracketed group, add the current subject pointer to the
+/* BRAZERO and BRAMINZERO occur just before a bracket group, indicating
+/* Caseful comparisons */
+/* Change option settings */
+/* Common code for all repeated single character type matches */
+/* Common code for all repeated single-character matches. We can give
+/* Compute the minimum number of offsets that we need to reset each time. Doing
+/* Conditional group: compilation checked that there are no more than
+/* Continue as from after the assertion, updating the offsets high water
+/* Continue from after the assertion, updating the offsets high water
+/* Control never gets here */
+/* Control never reaches here */
+/* Copy the offset information from temporary store if necessary */
+/* Do a single test if no case difference is set up */
+/* Do not stick any code in here without much thought; it is assumed
+/* End of a group, repeated or non-repeating. If we are at the end of
+/* End of subject assertion (\z) */
+/* End of subject or ending \n assertion (\Z) */
+/* End of the pattern. If PCRE_NOTEMPTY is set, fail if we have matched
+/* First, ensure the minimum number of matches are present. */
+/* First, ensure the minimum number of matches are present. Use inline
+/* First, ensure the minimum number of matches are present. We get back
+/* Flag bits for the match() function */
+/* For a non-repeating ket, just continue at this level. This also
+/* For anchored or unanchored matches, there may be a "last known required
+/* For extended extraction brackets (large number), we have to fish out
+/* For extended extraction brackets (large number), we have to fish out the
+/* For matches anchored to the end of the pattern, we can often avoid
+/* If a back reference hasn't been set, the length that is passed is greater
+/* If checking an assertion for a condition, return TRUE. */
+/* If hit the end of the group (which could be repeated), fail */
+/* If max == min we can continue with the main loop without the
+/* If maximizing it is worth using inline code for speed, doing the type
+/* If maximizing, find the longest possible run, then work backwards. */
+/* If maximizing, find the longest string and work backwards */
+/* If min = max, continue at the same level without recursing */
+/* If min = max, continue at the same level without recursion.
+/* If minimizing, keep testing the rest of the expression and advancing
+/* If minimizing, keep trying and advancing the pointer */
+/* If minimizing, we have to test the rest of the pattern before each
+/* If req_char is set, we know that that character must appear in the subject
+/* If the expression has got more back references than the offsets supplied can
+/* If the length of the reference is zero, just continue with the
+/* If the reference is unset, set the length to be longer than the amount
+/* If we can't find the required character, break the matching loop */
+/* If we have found the required character, save the point where we
+/* In all other cases except a conditional group we have to check the
+/* In case the recursion has set more capturing values, save the final
+/* Include the internals header, which itself includes Standard C headers plus
+/* Insufficient room for saving captured contents */
+/* Loop for handling unanchored repeated matching attempts; for anchored regexs
+/* Match a back reference, possibly repeatedly. Look past the end of the
+/* Match a character class, possibly repeatedly. Look past the end of the
+/* Match a negated single character */
+/* Match a negated single character repeatedly. This is almost a repeat of
+/* Match a run of characters */
+/* Match a single character repeatedly; different opcodes share code. */
+/* Match a single character type repeatedly; several different opcodes
+/* Match a single character type; inline for speed */
+/* Min and max values for the common repeats; for the maxima, 0 => infinity */
+/* Move the subject pointer back. This occurs only at the start of
+/* Negative assertion: all branches must fail to match */
+/* Now start processing the operations. */
+/* OP_KETRMAX */
+/* On entry ecode points to the first opcode, and eptr to the first character
+/* Opening capturing bracket. If there is space in the offset vector, save
+/* Or to a non-unique first char after study */
+/* Or to a unique first char if possible */
+/* Or to just after \n for a multiline match if possible */
+/* Other types of node can be handled by a switch */
+/* Otherwise test for either case */
+/* Print a sequence of chars in printable format, stopping at the end of the
+/* Recursion matches the current regex, nested. If there are any capturing
+/* Reset the maximum number of extractions we might see. */
+/* Reset the value of the ims flags, in case they got changed during
+/* Reset the working variable associated with each extraction. These should
+/* Separate the caselesss case for speed */
+/* Set up for repetition, or handle the non-repeated case */
+/* Set up the first character to match, if available. The first_char value is
+/* Skip over conditional reference data or large extraction number data if
+/* Start of subject assertion */
+/* Start of subject unless notbol, or after internal newline if multiline */
+/* Structure for building a chain of data that actually lives on the
+/* The code is duplicated for the caseless and caseful cases, for speed,
+/* The condition is an assertion. Call match() to evaluate it - setting
+/* The ims options can vary during the matching as a result of the presence
+/* The repeating kets try the rest of the pattern or restart from the
+/* There's been some horrible disaster. */
+/* This "while" is the end of the "do" above */
+/* This function applies a compiled re to a subject string and picks out
+/* Use a macro for debugging printing, 'cause that limits the use of #ifdef
+/* We don't need to repeat the search if we haven't yet reached the
+/* When a match occurs, substrings will be set for all internal extractions;
+/* Word boundary assertions */
+/*************************************************
+1. This software is distributed in the hope that it will be useful,
+2. The origin of this software must not be misrepresented, either by
+3. Altered versions must be plainly marked as such, and must not be
+4. If PCRE is embedded in any software that is released under the GNU
+5.005. If there is an options reset, it will get obeyed in the normal
+6 : 3 + (ecode[1] << 8) + ecode[2]),
+< -1 => some kind of unexpected problem
+= 0 => success, but offsets is not big enough
+Arguments:
+BOOL anchored;
+BOOL cur_is_word = (eptr < md->end_subject) &&
+BOOL is_subject;
+BOOL minimize = FALSE;
+BOOL prev_is_word = (eptr != md->start_subject) &&
+BOOL rc;
+BOOL startline;
+BOOL using_temporary_offsets = FALSE;
+Copyright (c) 1997-2000 University of Cambridge
+DPRINTF ((">>>> returning %d\n", match_block.errorcode));
+DPRINTF ((">>>> returning %d\n", rc));
+DPRINTF (("Copied offsets from temporary memory\n"));
+DPRINTF (("Freeing temporary memory\n"));
+DPRINTF (("Got memory to hold back references\n"));
+DPRINTF (("Unknown opcode %d\n", *ecode));
+DPRINTF (("bracket %d failed\n", number));
+DPRINTF (("bracket 0 failed\n"));
+DPRINTF (("ims reset to %02lx\n", ims));
+DPRINTF (("ims set to %02lx at group repeat\n", ims));
+DPRINTF (("ims set to %02lx\n", ims));
+DPRINTF (("matching %c{%d,%d} against subject %.*s\n", c, min, max,
+DPRINTF (("negative matching %c{%d,%d} against subject %.*s\n", c, min, max,
+DPRINTF (("saving %d %d %d\n", save_offset1, save_offset2, save_offset3));
+DPRINTF (("start bracket 0\n"));
+GETCHAR (c, eptr)	/* Get character */
+GETCHARINC (c, eptr)	/* Get character; increment eptr */
+General Purpose Licence (GPL), then the terms of that licence shall
+However, if the referenced string is the empty string, always treat
+If the bracket fails to match, we need to restore this value and also the
+If there isn't enough space in the offset vector, treat this as if it were a
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+Otherwise, we can use the vector supplied, rounding down its size to a multiple
+Permission is granted to anyone to use this software for any purpose on any
+REPEATCHAR:
+REPEATNOTCHAR:
+REPEATTYPE:
+Returns:          > 0 => success; value is the number of elements filled in
+Returns:       TRUE if matched
+Returns:      TRUE if matched
+Returns:     nothing
+They are not both allowed to be zero. */
+This is a library of functions to support regular expressions whose syntax
+This is the forcible breaking of infinite loops as implemented in Perl
+Writing separate code makes it go faster, as does using an autoincrement and
+Written by: Philip Hazel <ph10@cam.ac.uk>
+a move back into the brackets. Check the alternative branches in turn - the
+address of eptr, so that eptr can be a register variable. */
+an assertion "group", stop matching and return TRUE, but record the
+an empty string - recursion will then try other alternatives, if any. */
+an error. Save the top 15 values on the stack, and accept that the rest
+an unanchored pattern, of course. If there's no first char and the pattern was
+analyzing most of the pattern.  length > re->max_match_size is
+anchored = ((re->options | options) & PCRE_ANCHORED) != 0;
+and advance one byte in the pattern code. */
+and reinstate them after the recursion. However, we don't know how many
+and semantics are as close as possible to those of the Perl 5 language. See
+and the required character in fact is caseful. */
+at run time, so we have to test for anchoring. The first char may be unset for
+avoid duplicate testing (which takes significant time). This covers the vast
+backing off on a match. */
+bmtable = extra->data.bmtable;
+both cases of the character. Otherwise set the two values the same, which will
+bracketed group and go to there. */
+brackets - for testing for empty matches
+brackets started but not finished, we have to save their starting points
+break;
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+c != md->lcc[*eptr++])
+c = *ecode++ - OP_CRSTAR;
+c = *ecode++ - OP_NOTSTAR;
+c = *ecode++ - OP_STAR;
+c = *ecode++ - OP_TYPESTAR;
+c = *ecode++;
+c = *eptr++;
+c = 15;
+c = max - min;
+c = md->end_subject - eptr;
+c = md->lcc[c];
+c = md->offset_max;
+c == md->lcc[*eptr++])
+can't just fail here, because of the possibility of quantifiers with zero
+case OP_ALT:
+case OP_ANY:
+case OP_ASSERT:
+case OP_ASSERTBACK:
+case OP_ASSERTBACK_NOT:
+case OP_ASSERT_NOT:
+case OP_BEG_WORD:
+case OP_BRA:		/* Non-capturing bracket: optimized */
+case OP_BRAMINZERO:
+case OP_BRANUMBER:
+case OP_BRAZERO:
+case OP_CHARS:
+case OP_CIRC:
+case OP_CLASS:
+case OP_COND:
+case OP_CREF:
+case OP_CRMINPLUS:
+case OP_CRMINQUERY:
+case OP_CRMINRANGE:
+case OP_CRMINSTAR:
+case OP_CRPLUS:
+case OP_CRQUERY:
+case OP_CRRANGE:
+case OP_CRSTAR:
+case OP_DIGIT:
+case OP_DOLL:
+case OP_END:
+case OP_END_WORD:
+case OP_EOD:
+case OP_EODN:
+case OP_EXACT:
+case OP_KET:
+case OP_KETRMAX:
+case OP_KETRMIN:
+case OP_MINPLUS:
+case OP_MINQUERY:
+case OP_MINSTAR:
+case OP_MINUPTO:
+case OP_NOT:
+case OP_NOTEXACT:
+case OP_NOTMINPLUS:
+case OP_NOTMINQUERY:
+case OP_NOTMINSTAR:
+case OP_NOTMINUPTO:
+case OP_NOTPLUS:
+case OP_NOTQUERY:
+case OP_NOTSTAR:
+case OP_NOTUPTO:
+case OP_NOT_DIGIT:
+case OP_NOT_WHITESPACE:
+case OP_NOT_WORDCHAR:
+case OP_NOT_WORD_BOUNDARY:
+case OP_ONCE:
+case OP_OPT:
+case OP_PLUS:
+case OP_QUERY:
+case OP_RECURSE:
+case OP_REF:
+case OP_REVERSE:
+case OP_SOD:
+case OP_STAR:
+case OP_TYPEEXACT:
+case OP_TYPEMINPLUS:
+case OP_TYPEMINQUERY:
+case OP_TYPEMINSTAR:
+case OP_TYPEMINUPTO:
+case OP_TYPEPLUS:
+case OP_TYPEQUERY:
+case OP_TYPESTAR:
+case OP_TYPEUPTO:
+case OP_UPTO:
+case OP_WHITESPACE:
+case OP_WORDCHAR:
+case OP_WORD_BOUNDARY:
+case matching may be when this character is hit, so test for it in both its
+caselessly, or if there are any changes of this flag within the regex, set up
+cases if necessary. However, the different cased versions will not be set up
+character" set. If the PCRE_CASELESS is set, implying that the match starts
+characters and work backwards. */
+code for maximizing the speed, and do the type test once at the start
+code to character type repeats - written out again for speed. */
+commoning these up that doesn't require a test of the positive/negative
+computer system, and to redistribute it freely, subject to the following
+const char *subject;
+const pcre *re;
+const pcre_extra *extra;
+const uschar *bmtable = NULL;
+const uschar *data = ecode + 1;	/* Save for matching */
+const uschar *end_subject;
+const uschar *next = ecode + 1;
+const uschar *p = md->start_subject + md->offset_vector[offset];
+const uschar *p;
+const uschar *pp = eptr;
+const uschar *prev = ecode - (ecode[1] << 8) - ecode[2];
+const uschar *prev = ecode;
+const uschar *req_char_ptr = start_match - 1;
+const uschar *saved_eptr = eptr;
+const uschar *saved_eptr = eptrb->saved_eptr;
+const uschar *saved_eptr;
+const uschar *start_bits = NULL;
+const uschar *start_match = (const uschar *) subject + start_offset;
+continue;	/* With the main loop */
+continue;
+course of events. */
+ctype = *ecode++;	/* Code for the character type */
+cur_is_word == prev_is_word : cur_is_word != prev_is_word)
+current high water mark for use by positive assertions. Do this also
+default:		/* No repeat follows */
+default:
+do
+each branch of a lookbehind assertion. If we are too close to the start to
+each substring: the offsets to the start and end of the substring.
+ecode       position in code
+ecode + ((offset < offset_top && md->offset_vector[offset] >= 0) ?
+ecode += (ecode[1] << 8) + ecode[2];
+ecode += 2;
+ecode += 3 + (ecode[4] << 8) + ecode[5];
+ecode += 33;	/* Advance past the item */
+ecode += 3;		/* Advance past the item */
+ecode += 3;
+ecode += 5;
+ecode = next + 3;
+ecode++;
+else
+else if ((extra->options & PCRE_STUDY_BM) != 0)
+else if (first_char >= 0)
+else if (start_bits != NULL)
+else if (startline)
+encountered */
+end_subject = match_block.end_subject;
+eptr        pointer in subject
+eptr        points into the subject
+eptr += c;
+eptr += length;
+eptr += min;
+eptr -= (ecode[1] << 8) + ecode[2];
+eptr -= length;
+eptr = md->end_match_ptr;
+eptr++;
+eptrb       pointer to chain of blocks containing eptr at start of
+eptrb = &newptrb;
+eptrb = eptrb->prev;	/* Back up the stack of bracket start pointers */
+eptrblock *eptrb;
+eptrblock newptrb;
+eptrblock;
+exactly what going to the ket would do. */
+explicit claim or by omission.
+external_extra  points to "hints" from pcre_study() or is NULL
+external_re     points to the compiled expression
+extraction by setting the offsets and bumping the high water mark. */
+first_char = match_block.lcc[first_char];
+first_char = re->first_char;
+flags       can contain
+for (;;)
+for (i = 1; i <= c; i++)
+for (i = 1; i <= min; i++)
+for (i = min; i < max; i++)
+for (i = min;; i++)
+for the "once" (not-backup up) groups. */
+for the match to succeed. If the first character is set, req_char must be
+found it, so that we don't search again next time round the loop if
+from a previous iteration of this group, and be referred to by a reference
+goto REPEATCHAR;
+goto REPEATNOTCHAR;
+goto REPEATTYPE;
+group number back at the start and if necessary complete handling an
+happens for a repeating ket if no characters were matched in the group.
+here; that is handled in the code for KET. */
+hold, we get a temporary bit of working store to use during the matching.
+i.e. it could be ()* or ()? in the pattern. Brackets with fixed upper
+if (!anchored)
+if (!match (start_match, re->code, 2, &match_block, ims, NULL, match_isgroup))
+if (!match_ref (offset, eptr, length, md, ims))
+if (!md->endonly)
+if (!rc)
+if (!startline && extra != NULL)
+if ((*ecode++ == OP_WORD_BOUNDARY) ?
+if ((data[c / 8] & (1 << (c & 7))) != 0)
+if ((data[c / 8] & (1 << (c & 7))) == 0)
+if ((extra->options & PCRE_STUDY_MAPPED) != 0)
+if ((flags & match_condassert) != 0)
+if ((flags & match_isgroup) != 0)
+if ((ims & PCRE_CASELESS) != 0)
+if ((ims & PCRE_DOTALL) == 0 && c == '\n')
+if ((ims & PCRE_DOTALL) == 0 && eptr < md->end_subject && *eptr == '\n')
+if ((ims & PCRE_DOTALL) == 0)
+if ((ims & PCRE_MULTILINE) != 0)
+if ((md->ctypes[*eptr++] & ctype_digit) != 0)
+if ((md->ctypes[*eptr++] & ctype_digit) == 0)
+if ((md->ctypes[*eptr++] & ctype_space) != 0)
+if ((md->ctypes[*eptr++] & ctype_space) == 0)
+if ((md->ctypes[*eptr++] & ctype_word) != 0)
+if ((md->ctypes[*eptr++] & ctype_word) == 0)
+if ((md->ctypes[c] & ctype_digit) != 0)
+if ((md->ctypes[c] & ctype_digit) == 0)
+if ((md->ctypes[c] & ctype_space) != 0)
+if ((md->ctypes[c] & ctype_space) == 0)
+if ((md->ctypes[c] & ctype_word) != 0)
+if ((md->ctypes[c] & ctype_word) == 0)
+if ((options & ~PUBLIC_EXEC_OPTIONS) != 0)
+if ((re->options & PCRE_FIRSTSET) != 0)
+if ((re->options & PCRE_REQCHSET) != 0)
+if ((start_bits[c / 8] & (1 << (c & 7))) == 0)
+if (*ecode != OP_ONCE && *ecode != OP_ALT)
+if (*ecode == OP_KET || eptr == saved_eptr)
+if (*ecode == OP_KET)
+if (*ecode == OP_KETRMIN)
+if (*ecode++ != *eptr++)
+if (*ecode++ == *eptr++)
+if (*eptr != '\n')
+if (*eptr++ == '\n')
+if (*p++ != *eptr++)
+if (*p++ == req_char)
+if (*prev != OP_COND)
+if (*prev == OP_ASSERT || *prev == OP_ASSERT_NOT ||
+if (bmtable != NULL)
+if (bmtable[*start_match])
+if (c != *eptr++)
+if (c != md->lcc[*eptr++])
+if (c < 16)
+if (c == *eptr++)
+if (c == md->lcc[*eptr++])
+if (c > md->end_subject - eptr)
+if (cur_is_word == prev_is_word ||
+if (ecode[3] == OP_CREF)	/* Condition is extraction test */
+if (ecode[3] == OP_OPT)
+if (eptr != md->start_subject && eptr[-1] != '\n')
+if (eptr != md->start_subject)
+if (eptr < md->end_subject - 1 ||
+if (eptr < md->end_subject)
+if (eptr < md->start_subject)
+if (eptr >= md->end_subject ||
+if (eptr >= md->end_subject || (md->ctypes[*eptr] & ctype_digit) != 0)
+if (eptr >= md->end_subject || (md->ctypes[*eptr] & ctype_digit) == 0)
+if (eptr >= md->end_subject || (md->ctypes[*eptr] & ctype_space) != 0)
+if (eptr >= md->end_subject || (md->ctypes[*eptr] & ctype_space) == 0)
+if (eptr >= md->end_subject || (md->ctypes[*eptr] & ctype_word) != 0)
+if (eptr >= md->end_subject || (md->ctypes[*eptr] & ctype_word) == 0)
+if (eptr >= md->end_subject || *eptr == '\n')
+if (eptr >= md->end_subject || c != *eptr)
+if (eptr >= md->end_subject || c != md->lcc[*eptr])
+if (eptr >= md->end_subject || c == *eptr)
+if (eptr >= md->end_subject || c == md->lcc[*eptr])
+if (eptr >= md->end_subject)
+if (eptr++ >= md->end_subject)
+if (i >= max || !match_ref (offset, eptr, length, md, ims))
+if (i >= max || eptr >= md->end_subject ||
+if (i >= max || eptr >= md->end_subject || c != *eptr++)
+if (i >= max || eptr >= md->end_subject || c == *eptr++)
+if (i >= max || eptr >= md->end_subject)
+if (is_subject && length > md->end_subject - p)
+if (isprint (c = *(p++)))
+if (length == 0)
+if (length > md->end_subject - eptr)
+if (match (eptr, ecode + 3, offset_top, md, ims, NULL,
+if (match (eptr, ecode + 3, offset_top, md, ims, NULL, match_isgroup))
+if (match (eptr, ecode + 3, offset_top, md, ims, eptrb, 0) ||
+if (match (eptr, ecode + 3, offset_top, md, ims, eptrb, match_isgroup))
+if (match (eptr, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr, next + 3, offset_top, md, ims, eptrb, match_isgroup))
+if (match (eptr, next, offset_top, md, ims, eptrb, match_isgroup))
+if (match (eptr, prev, offset_top, md, ims, eptrb, match_isgroup) ||
+if (match (eptr--, ecode, offset_top, md, ims, eptrb, 0))
+if (match_block.end_offset_top > offsetcount)
+if (match_block.offset_vector != NULL)
+if (match_block.offset_vector == NULL)
+if (max == 0)
+if (md->lcc[*ecode++] != md->lcc[*eptr++])
+if (md->lcc[*ecode++] == md->lcc[*eptr++])
+if (md->lcc[*p++] != md->lcc[*eptr++])
+if (md->notbol && eptr == md->start_subject)
+if (md->notempty && eptr == md->start_match)
+if (md->noteol)
+if (min == max)
+if (min > 0)
+if (min > md->end_subject - eptr)
+if (minimize)
+if (number > 0)
+if (number > EXTRACT_BASIC_MAX) 
+if (offset < md->offset_max)
+if (offset >= md->offset_max)
+if (offset_top <= offset)
+if (offsetcount < 2)
+if (offsetcount >= 4)
+if (op > OP_BRA)
+if (p > req_char_ptr)
+if (p >= end_subject)
+if (pp == req_char || pp == req_char2)
+if (re == NULL || subject == NULL ||
+if (re->magic_number != MAGIC_NUMBER)
+if (re->max_match_size >= 0
+if (re->top_backref > 0 && re->top_backref >= ocount / 3)
+if (req_char == req_char2)
+if (req_char >= 0)
+if (resetcount > offsetcount)
+if (save != stacksave)
+if (save == NULL)
+if (skipped_chars)
+if (start_match + bmtable[256] > end_subject)
+if (start_match > match_block.start_subject + start_offset)
+if (using_temporary_offsets)
+if certain parts of the pattern were not used. */
+if the malloc fails ... there is no way of returning to the top level with
+implied in the second condition, because start_offset > 0. */
+ims         current /i, /m, and /s options
+ims         the ims flags
+ims = (ims & ~PCRE_IMS) | ecode[4];
+ims = ecode[1];
+ims = original_ims;
+ims = re->options & (PCRE_CASELESS | PCRE_MULTILINE | PCRE_DOTALL);
+in the pattern. */
+in the subject string, while eptrb holds the value of eptr at the start of the
+initialize them to avoid reading uninitialized locations. */
+inline, and there are *still* stupid compilers about that don't like indented
+inside the group.
+int
+int *offsets;
+int *save;
+int c;
+int first_char = -1;
+int flags;
+int length;
+int min, max, ctype;
+int number = *prev - OP_BRA;
+int number = op - OP_BRA;
+int offset = (ecode[1] << 9) | (ecode[2] << 1);		/* Doubled reference number */
+int offset = (ecode[4] << 9) | (ecode[5] << 1);	/* Doubled reference number */
+int offset;
+int offset_top;
+int offsetcount;
+int op = (int) *ecode;
+int options;
+int rc;
+int req_char = -1;
+int req_char2 = -1;
+int resetcount, ocount;
+int save_offset1 = md->offset_vector[offset];
+int save_offset2 = md->offset_vector[offset + 1];
+int save_offset3 = md->offset_vector[md->offset_end - number];
+int skipped_chars = 0;
+int stacksave[15];
+int start_offset;
+is a bit large to put on the stack, but using malloc for small numbers
+is_subject  TRUE if printing from within md->start_subject
+it as matched, any number of times (otherwise there could be infinite
+item to see if there is repeat information following. The code is similar
+item to see if there is repeat information following. Then obey similar
+last bracketed group - used for breaking infinite loops matching zero-length
+later in the subject; otherwise the test starts at the match point. This
+length          length of subject string (may contain binary zeros)
+length      length to be matched
+length      number to print
+length = (offset >= offset_top || md->offset_vector[offset] < 0) ?
+length = md->end_subject - p;
+level without recursing. Otherwise, if minimizing, keep trying the rest of
+loop. */
+loops). */
+main loop. */
+majority of cases. It will be suboptimal when the case flag changes in a regex
+mark, since extracts may have been taken during the assertion. */
+mark, since extracts may have been taken. */
+match (eptr, ecode + 3, offset_top, md, ims, eptrb, 0))
+match (eptr, ecode, offset_top, md, ims, eptrb, flags)
+match (eptr, prev, offset_top, md, ims, eptrb, match_isgroup))
+match_block.ctypes = re->tables + ctypes_offset;
+match_block.end_subject = match_block.start_subject + length;
+match_block.endonly = (re->options & PCRE_DOLLAR_ENDONLY) != 0;
+match_block.errorcode = PCRE_ERROR_NOMATCH;	/* Default error */
+match_block.errorcode == PCRE_ERROR_NOMATCH &&
+match_block.lcc = re->tables + lcc_offset;
+match_block.lcc[*start_match] != first_char)
+match_block.notbol = (options & PCRE_NOTBOL) != 0;
+match_block.notempty = (options & PCRE_NOTEMPTY) != 0;
+match_block.noteol = (options & PCRE_NOTEOL) != 0;
+match_block.offset_end = ocount;
+match_block.offset_max = (2 * ocount) / 3;
+match_block.offset_overflow = FALSE;
+match_block.offset_overflow = TRUE;
+match_block.offset_vector = (int *) (pcre_malloc) (ocount * sizeof (int));
+match_block.offset_vector = offsets;
+match_block.start_match = start_match;
+match_block.start_pattern = re->code;
+match_block.start_subject = (const uschar *) subject;
+match_condassert - this is an assertion condition
+match_condassert | match_isgroup))
+match_data *md;
+match_data match_block;
+match_isgroup - this is the start of a bracketed group
+match_isgroup);
+match_ref (offset, eptr, length, md, ims)
+matches, we carry on as at the end of a normal bracket, leaving the subject
+matching won't pass the KET for an assertion. If any one branch matches,
+matching won't pass the KET for this kind of subpattern. If any one branch
+max = (ecode[1] << 8) + ecode[2];
+max = (ecode[3] << 8) + ecode[4];
+max = INT_MAX;
+max = rep_max[c];	/* zero for max => infinity */
+max, eptr));
+maximum. Alternatively, if maximizing, find the maximum number of
+may be wrong. */
+md          pointer to "static" info for the match
+md          pointer to matching data block, if is_subject is TRUE
+md          points to match data block
+md->end_match_ptr = eptr;	/* For ONCE */
+md->end_match_ptr = eptr;	/* Record where we ended */
+md->end_offset_top = offset_top;	/* and how many extracts were taken */
+md->end_offset_top = offset_top;
+md->end_subject - eptr + 1 :
+md->errorcode = PCRE_ERROR_UNKNOWN_NODE;
+md->offset_overflow = TRUE;
+md->offset_vector[md->offset_end - i] = save[i];
+md->offset_vector[md->offset_end - number] = eptr - md->start_subject;
+md->offset_vector[md->offset_end - number] = save_offset3;
+md->offset_vector[md->offset_end - number];
+md->offset_vector[offset + 1] - md->offset_vector[offset];
+md->offset_vector[offset + 1] = eptr - md->start_subject;
+md->offset_vector[offset + 1] = save_offset2;
+md->offset_vector[offset] =
+md->offset_vector[offset] = save_offset1;
+memcpy (offsets + 2, match_block.offset_vector + 2,
+min = (ecode[1] << 8) + ecode[2];
+min = 0;
+min = max = (ecode[1] << 8) + ecode[2];
+min = max = 1;
+min = rep_min[c];	/* Pick up values from tables; */
+minima. */
+minimize = (*ecode == OP_CRMINRANGE);
+minimize = (c & 1) != 0;
+minimize = *ecode == OP_MINUPTO;
+minimize = *ecode == OP_NOTMINUPTO;
+minimize = *ecode == OP_TYPEMINUPTO;
+minimize = TRUE;
+minimum number of matches are present. If min = max, continue at the same
+misrepresented as being the original software.
+move back, this match function fails. */
+mustn't change the current values of the data slot, because they may be set
+need to recurse. */
+never be used unless previously set, but they get saved and restored, and so we
+never set for an anchored regular expression, but the anchoring may be forced
+newline unless endonly is set, else end of subject unless noteol is set. */
+newptrb.prev = eptrb;
+newptrb.saved_eptr = eptr;
+next += (next[1] << 8) + next[2];
+non-capturing bracket. Don't worry about setting the flag for the error case
+number = (ecode[4] << 8) | ecode[5];
+number = (prev[4] << 8) | prev[5];
+number from a dummy opcode at the start. */
+number, then move along the subject till after the recursive match,
+ocount = offsetcount - (offsetcount % 3);
+ocount = re->top_backref * 3 + 3;
+of (?ims) items in the pattern. They are kept in a local variable so that
+of 3. */
+of subject left; this ensures that every attempt at a match fails. We
+offset      index into the offset vector
+offset = number << 1;
+offset_top  current top pointer
+offset_top = md->end_offset_top;
+offset_top = offset + 2;
+offset_top, md, ims, eptrb, match_isgroup);
+offsetcount     the number of elements in the vector
+offsets         points to a vector of ints to be filled in with offsets
+offsets[0] = start_match - match_block.start_subject;
+offsets[1] = match_block.end_match_ptr - match_block.start_subject;
+op = OP_BRA;
+opcode. */
+optimization can save a huge amount of backtracking in patterns with nested
+option for each character match. Maybe that wouldn't add very much to the
+options         option bits
+p           points to characters
+p--;
+past the end if there is only one branch, but that's OK because that is
+pchars (ecode, length, FALSE, md);
+pchars (eptr, 16, TRUE, md);
+pchars (eptr, length, TRUE, md);
+pchars (p, length, FALSE, md);
+pchars (p, length, is_subject, md)
+pchars (start_match, end_subject - start_match, TRUE, &match_block);
+pcre_exec (re, extra, subject, length, start_offset, options, offsets, offsetcount)
+place we found it at last time. */
+pointer. */
+portions of the string if it matches. Two elements in the vector are set for
+pre-processor statements. I suppose it's only been 10 years... */
+preceded by BRAZERO or BRAMINZERO. */
+preceding bracket, in the appropriate order. */
+preceding bracket, in the appropriate order. We need to reset any options
+printf (" against backref ");
+printf (" against pattern ");
+printf ("%c", c);
+printf (">>>> Match against: ");
+printf (">>>>> Skipped %d chars to reach first character\n",
+printf ("\\x%02x", c);
+printf ("\n");
+printf ("end bracket %d", number);
+printf ("matching subject ");
+printf ("matching subject <null> against pattern ");
+printf ("matching subject <null>");
+printf ("start bracket %d subject=", number);
+rc = 0;
+rc = match (eptr, md->start_pattern, offset_top, md, ims, eptrb,
+rc = match_block.offset_overflow ? 0 : match_block.end_offset_top / 2;
+register const uschar *ecode;
+register const uschar *eptr;
+register const uschar *p = start_match + ((first_char >= 0) ? 1 : 0);
+register int *iend = iptr + resetcount;
+register int *iend = iptr - resetcount / 2 + 1;
+register int *iptr = match_block.offset_vector + ocount;
+register int *iptr = match_block.offset_vector;
+register int c = *start_match;
+register int c;
+register int i;
+register int length = ecode[1];
+register int pp = *p++;
+repeat it in the interests of efficiency. */
+repeat limits are compiled as a number of copies, with the optional ones
+req_char = re->req_char;
+req_char2 = ((re->options & (PCRE_CASELESS | PCRE_ICHANGED)) != 0) ?
+req_char_ptr = p;
+resetcount = 2 + re->top_bracket * 2;
+resetcount = ocount;
+restoring at the exit of a group is easy. */
+restrictions:
+return FALSE;
+return PCRE_ERROR_BADMAGIC;
+return PCRE_ERROR_BADOPTION;
+return PCRE_ERROR_NOMATCH;
+return PCRE_ERROR_NOMEMORY;
+return PCRE_ERROR_NULL;
+return TRUE;
+return match (eptr,
+return match (eptr, ecode + 3, offset_top, md, ims, eptrb, match_isgroup);
+return match_block.errorcode;
+return rc;
+save = (int *) (pcre_malloc) ((c + 1) * sizeof (int));
+save = stacksave;
+save[i] = md->offset_vector[md->offset_end - i];
+seems expensive. As a compromise, the stack is used when there are fewer
+share code. This is very similar to the code for single characters, but we
+similar code to character type repeats - written out again for speed.
+since matching characters is likely to be quite common. First, ensure the
+skipped_chars += bmtable[*start_match],
+skipped_chars += bmtable[256] - 1;
+skipped_chars -= bmtable[256] - 1;
+skipped_chars);
+skipped_chars++,
+stack of such pointers, to be re-instated at the end of the group when we hit
+stack, for holding the values of the subject pointer at the start of each
+start of each branch to move the current point backwards, so the code at
+start_bits = extra->data.start_bits;
+start_match += bmtable[*start_match];
+start_match += bmtable[256] - 1;
+start_match -= bmtable[256] - 1;
+start_match = (const uschar *) subject + length - re->max_match_size;
+start_match++ < end_subject);
+start_match++;
+start_offset    where to start in the subject string
+startline = (re->options & PCRE_STARTLINE) != 0;
+static BOOL
+static const char rep_max[] =
+static const char rep_min[] =
+static void
+strings.
+struct eptrblock *prev;
+studied, there may be a bitmap of possible first characters. */
+subject         points to the subject string
+subject if the requested.
+subpattern - to break infinite loops. */
+subpattern, so as to detect when an empty string has been matched by a
+subsequent match. */
+such there are (offset_top records the completed total) so we just have
+supersede any condition above with which it is incompatible.
+switch (*ecode)
+switch (ctype)
+switch (op)
+test once at the start (i.e. keep it out of the loop). */
+than 16 values to store; otherwise malloc is used. A problem is what to do
+than the number of characters left in the string, so the match fails.
+that "continue" in the code above comes out to here to repeat the main
+that changed within the bracket before re-running it, so check the next
+that it may occur zero times. It may repeat infinitely, or not at all -
+the assertion is true. Lookbehind assertions have an OP_REVERSE item at the
+the closing ket. When match() is called in other circumstances, we don't add to
+the code for a repeated single character, but I haven't found a nice way of
+the current subject position in the working slot at the top of the vector. We
+the expression and advancing one matching character if failing, up to the
+the external pcre header. */
+the file Tech.Notes for some information on the internals.
+the final argument TRUE causes it to stop at the end of an assertion. */
+the group. */
+the length of the reference string explicitly rather than passing the
+the loop runs just once. */
+the minimum number of bytes before we start. */
+the number from a dummy opcode at the start. */
+the point in the subject string is not moved back. Thus there can never be
+the pointer while it matches the class. */
+the same bracket.
+the stack. */
+the start hasn't passed this character yet. */
+the subject. */
+there were too many extractions, set the return code to zero. In the case
+this level is identical to the lookahead case. */
+this makes a huge difference to execution time when there aren't many brackets
+those back references that we can. In this case there need not be overflow
+time taken, but character matching *is* what this is all about... */
+to save all the potential data. There may be up to 99 such values, which
+to that for character classes, but repeated for efficiency. Then obey
+two branches. If the condition is false, skipping the first branch takes us
+typedef struct eptrblock
+unless PCRE_CASELESS was given or the casing state changes within the regex.
+unlimited repeats that aren't going to match. We don't know what the state of
+unsigned long int ims = 0;
+unsigned long int ims;
+unsigned long int original_ims = ims;		/* Save for resetting on ')' */
+up quickly if there are fewer than the minimum number of characters left in
+using_temporary_offsets = TRUE;
+values of the final offsets, in case they were set by a previous iteration of
+we just need to set up the whole thing as substring 0 before returning. If
+where we had to get some local store to hold offsets for backreferences, copy
+while (!anchored &&
+while (*ecode == OP_ALT)
+while (*ecode == OP_ALT);
+while (*next == OP_ALT);
+while (--iptr >= iend)
+while (eptr >= pp)
+while (iptr < iend)
+while (length-- > 0)
+while (p < end_subject)
+while (start_match < end_subject &&
+while (start_match < end_subject && *start_match != first_char)
+while (start_match < end_subject && start_match[-1] != '\n')
+while (start_match < end_subject)
+{
+{0, 0, 0, 0, 1, 1};
+{0, 0, 1, 1, 0, 0};
+}				/* End of main loop */
+}
diff --git a/src/sed/testsuite/uniq.inp b/src/sed/testsuite/uniq.inp
new file mode 100644
index 0000000..b1eddf3
--- /dev/null
+++ b/src/sed/testsuite/uniq.inp
@@ -0,0 +1,2058 @@
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+
+#define DPRINTF(p)		/*nothing */
+#define DPRINTF(p) printf p
+#define GETCHAR(c, eptr) c = *eptr;
+#define GETCHARINC(c, eptr) c = *eptr++;
+#define class pcre_class
+#define match_condassert   0x01	/* Called to check a condition assertion */
+#define match_isgroup      0x02	/* Set if start of bracketed group */
+#else
+#endif
+#endif
+#endif
+#endif
+#endif
+#endif
+#endif
+#endif
+#endif
+#endif
+#endif
+#endif
+#endif
+#endif
+#endif
+#endif
+#ifdef DEBUG			/* Sigh. Some compilers never learn. */
+#ifdef DEBUG			/* Sigh. Some compilers never learn. */
+#ifdef DEBUG
+#ifdef DEBUG
+#ifdef DEBUG
+#ifdef DEBUG
+#ifdef DEBUG
+#ifdef DEBUG
+#ifdef DEBUG
+#ifdef DEBUG
+#ifdef DEBUG
+#ifdef DEBUG
+#ifdef DEBUG
+#ifdef DEBUG
+#ifdef DEBUG
+#ifdef __cplusplus
+#include "internal.h"
+&& length - re->max_match_size > start_offset)
+((*ecode++ == OP_BEG_WORD) ? prev_is_word : cur_is_word))
+((md->ctypes[*eptr] & ctype_word) != 0);
+((md->ctypes[*eptr] & ctype_word) != 0);
+((md->ctypes[eptr[-1]] & ctype_word) != 0);
+((md->ctypes[eptr[-1]] & ctype_word) != 0);
+(eptr == md->end_subject - 1 && *eptr != '\n'))
+(eptr == md->end_subject - 1 && *eptr != '\n'))
+(i.e. keep it out of the loop). Also we can test that there are at least
+(md->ctypes[*eptr++] & ctype_digit) != 0)
+(md->ctypes[*eptr++] & ctype_digit) == 0)
+(md->ctypes[*eptr++] & ctype_space) != 0)
+(md->ctypes[*eptr++] & ctype_space) == 0)
+(md->ctypes[*eptr++] & ctype_word) != 0)
+(md->ctypes[*eptr++] & ctype_word) == 0)
+(offsetcount - 2) * sizeof (int));
+(offsets == NULL && offsetcount > 0))
+(pcre_free) (match_block.offset_vector);
+(pcre_free) (match_block.offset_vector);
+(pcre_free) (save);
+(re->tables + fcc_offset)[req_char] : req_char;
+*          Match a back-reference                *
+*         Execute a Regular Expression           *
+*         Match from current position            *
+*        Debugging function to print chars       *
+*      Perl-Compatible Regular Expressions       *
+*    Macros and tables for character handling    *
+*************************************************/
+*************************************************/
+*************************************************/
+*************************************************/
+*************************************************/
+*************************************************/
+*/
+*/
+*/
+*/
+*/
+*iptr = -1;
+*iptr++ = -1;
+*prev == OP_ASSERTBACK || *prev == OP_ASSERTBACK_NOT ||
+*prev == OP_ONCE)
+-----------------------------------------------------------------------------
+-----------------------------------------------------------------------------
+-1 => failed to match
+/*
+/* "Once" brackets are like assertion brackets except that after a match,
+/* ... else fall through */
+/* ... else fall through */
+/* Advance to a possible match for an initial string after study */
+/* Allow compilation as C++ source code, should anybody want to do that. */
+/* Always fail if not enough characters left */
+/* An alternation is the end of a branch; scan along to find the end of the
+/* Assert before internal newline if multiline, or before a terminating
+/* Assertion brackets. Check the alternative branches in turn - the
+/* At the start of a bracketed group, add the current subject pointer to the
+/* BRAZERO and BRAMINZERO occur just before a bracket group, indicating
+/* Caseful comparisons */
+/* Caseful comparisons */
+/* Change option settings */
+/* Common code for all repeated single character type matches */
+/* Common code for all repeated single-character matches. We can give
+/* Common code for all repeated single-character matches. We can give
+/* Compute the minimum number of offsets that we need to reset each time. Doing
+/* Conditional group: compilation checked that there are no more than
+/* Continue as from after the assertion, updating the offsets high water
+/* Continue from after the assertion, updating the offsets high water
+/* Control never gets here */
+/* Control never gets here */
+/* Control never gets here */
+/* Control never gets here */
+/* Control never gets here */
+/* Control never gets here */
+/* Control never gets here */
+/* Control never gets here */
+/* Control never gets here */
+/* Control never gets here */
+/* Control never gets here */
+/* Control never gets here */
+/* Control never gets here */
+/* Control never gets here */
+/* Control never reaches here */
+/* Control never reaches here */
+/* Copy the offset information from temporary store if necessary */
+/* Do a single test if no case difference is set up */
+/* Do not stick any code in here without much thought; it is assumed
+/* End of a group, repeated or non-repeating. If we are at the end of
+/* End of subject assertion (\z) */
+/* End of subject or ending \n assertion (\Z) */
+/* End of the pattern. If PCRE_NOTEMPTY is set, fail if we have matched
+/* First, ensure the minimum number of matches are present. */
+/* First, ensure the minimum number of matches are present. Use inline
+/* First, ensure the minimum number of matches are present. We get back
+/* Flag bits for the match() function */
+/* For a non-repeating ket, just continue at this level. This also
+/* For a non-repeating ket, just continue at this level. This also
+/* For anchored or unanchored matches, there may be a "last known required
+/* For extended extraction brackets (large number), we have to fish out
+/* For extended extraction brackets (large number), we have to fish out the
+/* For matches anchored to the end of the pattern, we can often avoid
+/* If a back reference hasn't been set, the length that is passed is greater
+/* If checking an assertion for a condition, return TRUE. */
+/* If hit the end of the group (which could be repeated), fail */
+/* If max == min we can continue with the main loop without the
+/* If maximizing it is worth using inline code for speed, doing the type
+/* If maximizing, find the longest possible run, then work backwards. */
+/* If maximizing, find the longest string and work backwards */
+/* If min = max, continue at the same level without recursing */
+/* If min = max, continue at the same level without recursion.
+/* If minimizing, keep testing the rest of the expression and advancing
+/* If minimizing, keep trying and advancing the pointer */
+/* If minimizing, we have to test the rest of the pattern before each
+/* If req_char is set, we know that that character must appear in the subject
+/* If the expression has got more back references than the offsets supplied can
+/* If the length of the reference is zero, just continue with the
+/* If the reference is unset, set the length to be longer than the amount
+/* If we can't find the required character, break the matching loop */
+/* If we have found the required character, save the point where we
+/* In all other cases except a conditional group we have to check the
+/* In case the recursion has set more capturing values, save the final
+/* Include the internals header, which itself includes Standard C headers plus
+/* Insufficient room for saving captured contents */
+/* Loop for handling unanchored repeated matching attempts; for anchored regexs
+/* Match a back reference, possibly repeatedly. Look past the end of the
+/* Match a character class, possibly repeatedly. Look past the end of the
+/* Match a negated single character */
+/* Match a negated single character repeatedly. This is almost a repeat of
+/* Match a run of characters */
+/* Match a single character repeatedly; different opcodes share code. */
+/* Match a single character type repeatedly; several different opcodes
+/* Match a single character type; inline for speed */
+/* Min and max values for the common repeats; for the maxima, 0 => infinity */
+/* Move the subject pointer back. This occurs only at the start of
+/* Negative assertion: all branches must fail to match */
+/* Now start processing the operations. */
+/* OP_KETRMAX */
+/* OP_KETRMAX */
+/* On entry ecode points to the first opcode, and eptr to the first character
+/* Opening capturing bracket. If there is space in the offset vector, save
+/* Or to a non-unique first char after study */
+/* Or to a unique first char if possible */
+/* Or to just after \n for a multiline match if possible */
+/* Other types of node can be handled by a switch */
+/* Otherwise test for either case */
+/* Print a sequence of chars in printable format, stopping at the end of the
+/* Recursion matches the current regex, nested. If there are any capturing
+/* Reset the maximum number of extractions we might see. */
+/* Reset the value of the ims flags, in case they got changed during
+/* Reset the working variable associated with each extraction. These should
+/* Separate the caselesss case for speed */
+/* Set up for repetition, or handle the non-repeated case */
+/* Set up the first character to match, if available. The first_char value is
+/* Skip over conditional reference data or large extraction number data if
+/* Start of subject assertion */
+/* Start of subject unless notbol, or after internal newline if multiline */
+/* Structure for building a chain of data that actually lives on the
+/* The code is duplicated for the caseless and caseful cases, for speed,
+/* The code is duplicated for the caseless and caseful cases, for speed,
+/* The condition is an assertion. Call match() to evaluate it - setting
+/* The ims options can vary during the matching as a result of the presence
+/* The repeating kets try the rest of the pattern or restart from the
+/* The repeating kets try the rest of the pattern or restart from the
+/* There's been some horrible disaster. */
+/* This "while" is the end of the "do" above */
+/* This function applies a compiled re to a subject string and picks out
+/* Use a macro for debugging printing, 'cause that limits the use of #ifdef
+/* We don't need to repeat the search if we haven't yet reached the
+/* When a match occurs, substrings will be set for all internal extractions;
+/* Word boundary assertions */
+/*************************************************
+/*************************************************
+/*************************************************
+/*************************************************
+/*************************************************
+/*************************************************
+1. This software is distributed in the hope that it will be useful,
+2. The origin of this software must not be misrepresented, either by
+3. Altered versions must be plainly marked as such, and must not be
+4. If PCRE is embedded in any software that is released under the GNU
+5.005. If there is an options reset, it will get obeyed in the normal
+5.005. If there is an options reset, it will get obeyed in the normal
+6 : 3 + (ecode[1] << 8) + ecode[2]),
+< -1 => some kind of unexpected problem
+= 0 => success, but offsets is not big enough
+Arguments:
+Arguments:
+Arguments:
+Arguments:
+BOOL anchored;
+BOOL cur_is_word = (eptr < md->end_subject) &&
+BOOL cur_is_word = (eptr < md->end_subject) &&
+BOOL is_subject;
+BOOL minimize = FALSE;
+BOOL prev_is_word = (eptr != md->start_subject) &&
+BOOL prev_is_word = (eptr != md->start_subject) &&
+BOOL rc;
+BOOL startline;
+BOOL using_temporary_offsets = FALSE;
+Copyright (c) 1997-2000 University of Cambridge
+DPRINTF ((">>>> returning %d\n", match_block.errorcode));
+DPRINTF ((">>>> returning %d\n", rc));
+DPRINTF (("Copied offsets from temporary memory\n"));
+DPRINTF (("Freeing temporary memory\n"));
+DPRINTF (("Freeing temporary memory\n"));
+DPRINTF (("Got memory to hold back references\n"));
+DPRINTF (("Unknown opcode %d\n", *ecode));
+DPRINTF (("bracket %d failed\n", number));
+DPRINTF (("bracket 0 failed\n"));
+DPRINTF (("ims reset to %02lx\n", ims));
+DPRINTF (("ims set to %02lx at group repeat\n", ims));
+DPRINTF (("ims set to %02lx\n", ims));
+DPRINTF (("matching %c{%d,%d} against subject %.*s\n", c, min, max,
+DPRINTF (("negative matching %c{%d,%d} against subject %.*s\n", c, min, max,
+DPRINTF (("saving %d %d %d\n", save_offset1, save_offset2, save_offset3));
+DPRINTF (("start bracket 0\n"));
+GETCHAR (c, eptr)	/* Get character */
+GETCHARINC (c, eptr)	/* Get character; increment eptr */
+GETCHARINC (c, eptr)	/* Get character; increment eptr */
+General Purpose Licence (GPL), then the terms of that licence shall
+However, if the referenced string is the empty string, always treat
+If the bracket fails to match, we need to restore this value and also the
+If there isn't enough space in the offset vector, treat this as if it were a
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+Otherwise, we can use the vector supplied, rounding down its size to a multiple
+Permission is granted to anyone to use this software for any purpose on any
+REPEATCHAR:
+REPEATNOTCHAR:
+REPEATTYPE:
+Returns:          > 0 => success; value is the number of elements filled in
+Returns:       TRUE if matched
+Returns:      TRUE if matched
+Returns:     nothing
+They are not both allowed to be zero. */
+This is a library of functions to support regular expressions whose syntax
+This is the forcible breaking of infinite loops as implemented in Perl
+This is the forcible breaking of infinite loops as implemented in Perl
+Writing separate code makes it go faster, as does using an autoincrement and
+Written by: Philip Hazel <ph10@cam.ac.uk>
+a move back into the brackets. Check the alternative branches in turn - the
+address of eptr, so that eptr can be a register variable. */
+an assertion "group", stop matching and return TRUE, but record the
+an empty string - recursion will then try other alternatives, if any. */
+an error. Save the top 15 values on the stack, and accept that the rest
+an unanchored pattern, of course. If there's no first char and the pattern was
+analyzing most of the pattern.  length > re->max_match_size is
+anchored = ((re->options | options) & PCRE_ANCHORED) != 0;
+and advance one byte in the pattern code. */
+and reinstate them after the recursion. However, we don't know how many
+and semantics are as close as possible to those of the Perl 5 language. See
+and the required character in fact is caseful. */
+at run time, so we have to test for anchoring. The first char may be unset for
+avoid duplicate testing (which takes significant time). This covers the vast
+backing off on a match. */
+bmtable = extra->data.bmtable;
+both cases of the character. Otherwise set the two values the same, which will
+bracketed group and go to there. */
+brackets - for testing for empty matches
+brackets started but not finished, we have to save their starting points
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+break;
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+c != md->lcc[*eptr++])
+c = *ecode++ - OP_CRSTAR;
+c = *ecode++ - OP_CRSTAR;
+c = *ecode++ - OP_NOTSTAR;
+c = *ecode++ - OP_STAR;
+c = *ecode++ - OP_TYPESTAR;
+c = *ecode++;
+c = *ecode++;
+c = *eptr++;
+c = 15;
+c = max - min;
+c = md->end_subject - eptr;
+c = md->lcc[c];
+c = md->lcc[c];
+c = md->offset_max;
+c == md->lcc[*eptr++])
+can't just fail here, because of the possibility of quantifiers with zero
+case OP_ALT:
+case OP_ANY:
+case OP_ANY:
+case OP_ANY:
+case OP_ANY:
+case OP_ASSERT:
+case OP_ASSERTBACK:
+case OP_ASSERTBACK_NOT:
+case OP_ASSERT_NOT:
+case OP_BEG_WORD:
+case OP_BRA:		/* Non-capturing bracket: optimized */
+case OP_BRAMINZERO:
+case OP_BRANUMBER:
+case OP_BRAZERO:
+case OP_CHARS:
+case OP_CIRC:
+case OP_CLASS:
+case OP_COND:
+case OP_CREF:
+case OP_CRMINPLUS:
+case OP_CRMINPLUS:
+case OP_CRMINQUERY:
+case OP_CRMINQUERY:
+case OP_CRMINRANGE:
+case OP_CRMINRANGE:
+case OP_CRMINSTAR:
+case OP_CRMINSTAR:
+case OP_CRPLUS:
+case OP_CRPLUS:
+case OP_CRQUERY:
+case OP_CRQUERY:
+case OP_CRRANGE:
+case OP_CRRANGE:
+case OP_CRSTAR:
+case OP_CRSTAR:
+case OP_DIGIT:
+case OP_DIGIT:
+case OP_DIGIT:
+case OP_DIGIT:
+case OP_DOLL:
+case OP_END:
+case OP_END_WORD:
+case OP_EOD:
+case OP_EODN:
+case OP_EXACT:
+case OP_KET:
+case OP_KETRMAX:
+case OP_KETRMIN:
+case OP_MINPLUS:
+case OP_MINQUERY:
+case OP_MINSTAR:
+case OP_MINUPTO:
+case OP_NOT:
+case OP_NOTEXACT:
+case OP_NOTMINPLUS:
+case OP_NOTMINQUERY:
+case OP_NOTMINSTAR:
+case OP_NOTMINUPTO:
+case OP_NOTPLUS:
+case OP_NOTQUERY:
+case OP_NOTSTAR:
+case OP_NOTUPTO:
+case OP_NOT_DIGIT:
+case OP_NOT_DIGIT:
+case OP_NOT_DIGIT:
+case OP_NOT_DIGIT:
+case OP_NOT_WHITESPACE:
+case OP_NOT_WHITESPACE:
+case OP_NOT_WHITESPACE:
+case OP_NOT_WHITESPACE:
+case OP_NOT_WORDCHAR:
+case OP_NOT_WORDCHAR:
+case OP_NOT_WORDCHAR:
+case OP_NOT_WORDCHAR:
+case OP_NOT_WORD_BOUNDARY:
+case OP_ONCE:
+case OP_OPT:
+case OP_PLUS:
+case OP_QUERY:
+case OP_RECURSE:
+case OP_REF:
+case OP_REVERSE:
+case OP_SOD:
+case OP_STAR:
+case OP_TYPEEXACT:
+case OP_TYPEMINPLUS:
+case OP_TYPEMINQUERY:
+case OP_TYPEMINSTAR:
+case OP_TYPEMINUPTO:
+case OP_TYPEPLUS:
+case OP_TYPEQUERY:
+case OP_TYPESTAR:
+case OP_TYPEUPTO:
+case OP_UPTO:
+case OP_WHITESPACE:
+case OP_WHITESPACE:
+case OP_WHITESPACE:
+case OP_WHITESPACE:
+case OP_WORDCHAR:
+case OP_WORDCHAR:
+case OP_WORDCHAR:
+case OP_WORDCHAR:
+case OP_WORD_BOUNDARY:
+case matching may be when this character is hit, so test for it in both its
+caselessly, or if there are any changes of this flag within the regex, set up
+cases if necessary. However, the different cased versions will not be set up
+character" set. If the PCRE_CASELESS is set, implying that the match starts
+characters and work backwards. */
+characters and work backwards. */
+code for maximizing the speed, and do the type test once at the start
+code to character type repeats - written out again for speed. */
+commoning these up that doesn't require a test of the positive/negative
+computer system, and to redistribute it freely, subject to the following
+const char *subject;
+const pcre *re;
+const pcre_extra *extra;
+const uschar *bmtable = NULL;
+const uschar *data = ecode + 1;	/* Save for matching */
+const uschar *end_subject;
+const uschar *next = ecode + 1;
+const uschar *next = ecode + 1;
+const uschar *p = md->start_subject + md->offset_vector[offset];
+const uschar *p;
+const uschar *pp = eptr;
+const uschar *pp = eptr;
+const uschar *pp = eptr;
+const uschar *pp = eptr;
+const uschar *pp = eptr;
+const uschar *pp = eptr;
+const uschar *pp = eptr;
+const uschar *prev = ecode - (ecode[1] << 8) - ecode[2];
+const uschar *prev = ecode;
+const uschar *req_char_ptr = start_match - 1;
+const uschar *saved_eptr = eptr;
+const uschar *saved_eptr = eptrb->saved_eptr;
+const uschar *saved_eptr;
+const uschar *start_bits = NULL;
+const uschar *start_match = (const uschar *) subject + start_offset;
+continue;	/* With the main loop */
+continue;
+continue;
+continue;
+continue;
+continue;
+continue;
+continue;
+continue;
+continue;
+continue;
+continue;
+continue;
+continue;
+course of events. */
+course of events. */
+ctype = *ecode++;	/* Code for the character type */
+cur_is_word == prev_is_word : cur_is_word != prev_is_word)
+current high water mark for use by positive assertions. Do this also
+default:		/* No repeat follows */
+default:		/* No repeat follows */
+default:
+do
+do
+do
+do
+do
+do
+do
+do
+do
+do
+do
+each branch of a lookbehind assertion. If we are too close to the start to
+each substring: the offsets to the start and end of the substring.
+ecode       position in code
+ecode + ((offset < offset_top && md->offset_vector[offset] >= 0) ?
+ecode += (ecode[1] << 8) + ecode[2];
+ecode += (ecode[1] << 8) + ecode[2];
+ecode += (ecode[1] << 8) + ecode[2];
+ecode += (ecode[1] << 8) + ecode[2];
+ecode += (ecode[1] << 8) + ecode[2];
+ecode += (ecode[1] << 8) + ecode[2];
+ecode += (ecode[1] << 8) + ecode[2];
+ecode += (ecode[1] << 8) + ecode[2];
+ecode += (ecode[1] << 8) + ecode[2];
+ecode += (ecode[1] << 8) + ecode[2];
+ecode += 2;
+ecode += 2;
+ecode += 3 + (ecode[4] << 8) + ecode[5];
+ecode += 33;	/* Advance past the item */
+ecode += 3;		/* Advance past the item */
+ecode += 3;
+ecode += 3;
+ecode += 3;
+ecode += 3;
+ecode += 3;
+ecode += 3;
+ecode += 3;
+ecode += 3;
+ecode += 3;
+ecode += 3;
+ecode += 3;
+ecode += 3;
+ecode += 5;
+ecode += 5;
+ecode = next + 3;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+ecode++;
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else
+else if ((extra->options & PCRE_STUDY_BM) != 0)
+else if (first_char >= 0)
+else if (start_bits != NULL)
+else if (startline)
+encountered */
+end_subject = match_block.end_subject;
+eptr        pointer in subject
+eptr        points into the subject
+eptr += c;
+eptr += length;
+eptr += length;
+eptr += length;
+eptr += length;
+eptr += min;
+eptr -= (ecode[1] << 8) + ecode[2];
+eptr -= length;
+eptr = md->end_match_ptr;
+eptr = md->end_match_ptr;
+eptr++;
+eptr++;
+eptr++;
+eptr++;
+eptr++;
+eptr++;
+eptr++;
+eptr++;
+eptr++;
+eptr++;
+eptr++;
+eptr++;
+eptrb       pointer to chain of blocks containing eptr at start of
+eptrb = &newptrb;
+eptrb = eptrb->prev;	/* Back up the stack of bracket start pointers */
+eptrblock *eptrb;
+eptrblock newptrb;
+eptrblock;
+exactly what going to the ket would do. */
+explicit claim or by omission.
+external_extra  points to "hints" from pcre_study() or is NULL
+external_re     points to the compiled expression
+extraction by setting the offsets and bumping the high water mark. */
+first_char = match_block.lcc[first_char];
+first_char = re->first_char;
+flags       can contain
+for (;;)
+for (i = 1; i <= c; i++)
+for (i = 1; i <= c; i++)
+for (i = 1; i <= min; i++)
+for (i = 1; i <= min; i++)
+for (i = 1; i <= min; i++)
+for (i = 1; i <= min; i++)
+for (i = 1; i <= min; i++)
+for (i = 1; i <= min; i++)
+for (i = 1; i <= min; i++)
+for (i = 1; i <= min; i++)
+for (i = 1; i <= min; i++)
+for (i = 1; i <= min; i++)
+for (i = 1; i <= min; i++)
+for (i = 1; i <= min; i++)
+for (i = 1; i <= min; i++)
+for (i = min; i < max; i++)
+for (i = min; i < max; i++)
+for (i = min; i < max; i++)
+for (i = min; i < max; i++)
+for (i = min; i < max; i++)
+for (i = min; i < max; i++)
+for (i = min; i < max; i++)
+for (i = min; i < max; i++)
+for (i = min; i < max; i++)
+for (i = min; i < max; i++)
+for (i = min; i < max; i++)
+for (i = min; i < max; i++)
+for (i = min; i < max; i++)
+for (i = min;; i++)
+for (i = min;; i++)
+for (i = min;; i++)
+for (i = min;; i++)
+for (i = min;; i++)
+for (i = min;; i++)
+for (i = min;; i++)
+for the "once" (not-backup up) groups. */
+for the match to succeed. If the first character is set, req_char must be
+found it, so that we don't search again next time round the loop if
+from a previous iteration of this group, and be referred to by a reference
+goto REPEATCHAR;
+goto REPEATCHAR;
+goto REPEATNOTCHAR;
+goto REPEATNOTCHAR;
+goto REPEATTYPE;
+goto REPEATTYPE;
+group number back at the start and if necessary complete handling an
+happens for a repeating ket if no characters were matched in the group.
+happens for a repeating ket if no characters were matched in the group.
+here; that is handled in the code for KET. */
+hold, we get a temporary bit of working store to use during the matching.
+i.e. it could be ()* or ()? in the pattern. Brackets with fixed upper
+if (!anchored)
+if (!match (start_match, re->code, 2, &match_block, ims, NULL, match_isgroup))
+if (!match_ref (offset, eptr, length, md, ims))
+if (!match_ref (offset, eptr, length, md, ims))
+if (!match_ref (offset, eptr, length, md, ims))
+if (!md->endonly)
+if (!rc)
+if (!startline && extra != NULL)
+if ((*ecode++ == OP_WORD_BOUNDARY) ?
+if ((data[c / 8] & (1 << (c & 7))) != 0)
+if ((data[c / 8] & (1 << (c & 7))) != 0)
+if ((data[c / 8] & (1 << (c & 7))) == 0)
+if ((extra->options & PCRE_STUDY_MAPPED) != 0)
+if ((flags & match_condassert) != 0)
+if ((flags & match_condassert) != 0)
+if ((flags & match_isgroup) != 0)
+if ((ims & PCRE_CASELESS) != 0)
+if ((ims & PCRE_CASELESS) != 0)
+if ((ims & PCRE_CASELESS) != 0)
+if ((ims & PCRE_CASELESS) != 0)
+if ((ims & PCRE_CASELESS) != 0)
+if ((ims & PCRE_CASELESS) != 0)
+if ((ims & PCRE_CASELESS) != 0)
+if ((ims & PCRE_DOTALL) == 0 && c == '\n')
+if ((ims & PCRE_DOTALL) == 0 && eptr < md->end_subject && *eptr == '\n')
+if ((ims & PCRE_DOTALL) == 0)
+if ((ims & PCRE_DOTALL) == 0)
+if ((ims & PCRE_MULTILINE) != 0)
+if ((ims & PCRE_MULTILINE) != 0)
+if ((md->ctypes[*eptr++] & ctype_digit) != 0)
+if ((md->ctypes[*eptr++] & ctype_digit) == 0)
+if ((md->ctypes[*eptr++] & ctype_space) != 0)
+if ((md->ctypes[*eptr++] & ctype_space) == 0)
+if ((md->ctypes[*eptr++] & ctype_word) != 0)
+if ((md->ctypes[*eptr++] & ctype_word) == 0)
+if ((md->ctypes[c] & ctype_digit) != 0)
+if ((md->ctypes[c] & ctype_digit) == 0)
+if ((md->ctypes[c] & ctype_space) != 0)
+if ((md->ctypes[c] & ctype_space) == 0)
+if ((md->ctypes[c] & ctype_word) != 0)
+if ((md->ctypes[c] & ctype_word) == 0)
+if ((options & ~PUBLIC_EXEC_OPTIONS) != 0)
+if ((re->options & PCRE_FIRSTSET) != 0)
+if ((re->options & PCRE_REQCHSET) != 0)
+if ((start_bits[c / 8] & (1 << (c & 7))) == 0)
+if (*ecode != OP_ONCE && *ecode != OP_ALT)
+if (*ecode == OP_KET || eptr == saved_eptr)
+if (*ecode == OP_KET || eptr == saved_eptr)
+if (*ecode == OP_KET)
+if (*ecode == OP_KETRMIN)
+if (*ecode == OP_KETRMIN)
+if (*ecode++ != *eptr++)
+if (*ecode++ == *eptr++)
+if (*eptr != '\n')
+if (*eptr++ == '\n')
+if (*p++ != *eptr++)
+if (*p++ == req_char)
+if (*prev != OP_COND)
+if (*prev == OP_ASSERT || *prev == OP_ASSERT_NOT ||
+if (bmtable != NULL)
+if (bmtable[*start_match])
+if (c != *eptr++)
+if (c != md->lcc[*eptr++])
+if (c < 16)
+if (c == *eptr++)
+if (c == md->lcc[*eptr++])
+if (c > md->end_subject - eptr)
+if (cur_is_word == prev_is_word ||
+if (ecode[3] == OP_CREF)	/* Condition is extraction test */
+if (ecode[3] == OP_OPT)
+if (eptr != md->start_subject && eptr[-1] != '\n')
+if (eptr != md->start_subject)
+if (eptr < md->end_subject - 1 ||
+if (eptr < md->end_subject - 1 ||
+if (eptr < md->end_subject)
+if (eptr < md->end_subject)
+if (eptr < md->start_subject)
+if (eptr >= md->end_subject ||
+if (eptr >= md->end_subject ||
+if (eptr >= md->end_subject ||
+if (eptr >= md->end_subject ||
+if (eptr >= md->end_subject ||
+if (eptr >= md->end_subject ||
+if (eptr >= md->end_subject || (md->ctypes[*eptr] & ctype_digit) != 0)
+if (eptr >= md->end_subject || (md->ctypes[*eptr] & ctype_digit) == 0)
+if (eptr >= md->end_subject || (md->ctypes[*eptr] & ctype_space) != 0)
+if (eptr >= md->end_subject || (md->ctypes[*eptr] & ctype_space) == 0)
+if (eptr >= md->end_subject || (md->ctypes[*eptr] & ctype_word) != 0)
+if (eptr >= md->end_subject || (md->ctypes[*eptr] & ctype_word) == 0)
+if (eptr >= md->end_subject || *eptr == '\n')
+if (eptr >= md->end_subject || c != *eptr)
+if (eptr >= md->end_subject || c != md->lcc[*eptr])
+if (eptr >= md->end_subject || c == *eptr)
+if (eptr >= md->end_subject || c == md->lcc[*eptr])
+if (eptr >= md->end_subject)
+if (eptr >= md->end_subject)
+if (eptr >= md->end_subject)
+if (eptr >= md->end_subject)
+if (eptr >= md->end_subject)
+if (eptr++ >= md->end_subject)
+if (i >= max || !match_ref (offset, eptr, length, md, ims))
+if (i >= max || eptr >= md->end_subject ||
+if (i >= max || eptr >= md->end_subject ||
+if (i >= max || eptr >= md->end_subject || c != *eptr++)
+if (i >= max || eptr >= md->end_subject || c == *eptr++)
+if (i >= max || eptr >= md->end_subject)
+if (i >= max || eptr >= md->end_subject)
+if (is_subject && length > md->end_subject - p)
+if (isprint (c = *(p++)))
+if (length == 0)
+if (length > md->end_subject - eptr)
+if (length > md->end_subject - eptr)
+if (match (eptr, ecode + 3, offset_top, md, ims, NULL,
+if (match (eptr, ecode + 3, offset_top, md, ims, NULL, match_isgroup))
+if (match (eptr, ecode + 3, offset_top, md, ims, NULL, match_isgroup))
+if (match (eptr, ecode + 3, offset_top, md, ims, eptrb, 0) ||
+if (match (eptr, ecode + 3, offset_top, md, ims, eptrb, 0) ||
+if (match (eptr, ecode + 3, offset_top, md, ims, eptrb, match_isgroup))
+if (match (eptr, ecode + 3, offset_top, md, ims, eptrb, match_isgroup))
+if (match (eptr, ecode + 3, offset_top, md, ims, eptrb, match_isgroup))
+if (match (eptr, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr, next + 3, offset_top, md, ims, eptrb, match_isgroup))
+if (match (eptr, next, offset_top, md, ims, eptrb, match_isgroup))
+if (match (eptr, prev, offset_top, md, ims, eptrb, match_isgroup) ||
+if (match (eptr, prev, offset_top, md, ims, eptrb, match_isgroup) ||
+if (match (eptr--, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr--, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr--, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr--, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr--, ecode, offset_top, md, ims, eptrb, 0))
+if (match (eptr--, ecode, offset_top, md, ims, eptrb, 0))
+if (match_block.end_offset_top > offsetcount)
+if (match_block.offset_vector != NULL)
+if (match_block.offset_vector == NULL)
+if (max == 0)
+if (max == 0)
+if (max == 0)
+if (max == 0)
+if (max == 0)
+if (max == 0)
+if (max == 0)
+if (md->lcc[*ecode++] != md->lcc[*eptr++])
+if (md->lcc[*ecode++] == md->lcc[*eptr++])
+if (md->lcc[*p++] != md->lcc[*eptr++])
+if (md->notbol && eptr == md->start_subject)
+if (md->notempty && eptr == md->start_match)
+if (md->noteol)
+if (md->noteol)
+if (min == max)
+if (min == max)
+if (min == max)
+if (min == max)
+if (min == max)
+if (min == max)
+if (min == max)
+if (min > 0)
+if (min > md->end_subject - eptr)
+if (min > md->end_subject - eptr)
+if (min > md->end_subject - eptr)
+if (minimize)
+if (minimize)
+if (minimize)
+if (minimize)
+if (minimize)
+if (minimize)
+if (minimize)
+if (number > 0)
+if (number > EXTRACT_BASIC_MAX) 
+if (number > EXTRACT_BASIC_MAX) 
+if (offset < md->offset_max)
+if (offset >= md->offset_max)
+if (offset_top <= offset)
+if (offsetcount < 2)
+if (offsetcount >= 4)
+if (op > OP_BRA)
+if (p > req_char_ptr)
+if (p >= end_subject)
+if (pp == req_char || pp == req_char2)
+if (re == NULL || subject == NULL ||
+if (re->magic_number != MAGIC_NUMBER)
+if (re->max_match_size >= 0
+if (re->top_backref > 0 && re->top_backref >= ocount / 3)
+if (req_char == req_char2)
+if (req_char >= 0)
+if (resetcount > offsetcount)
+if (save != stacksave)
+if (save == NULL)
+if (skipped_chars)
+if (start_match + bmtable[256] > end_subject)
+if (start_match > match_block.start_subject + start_offset)
+if (using_temporary_offsets)
+if (using_temporary_offsets)
+if certain parts of the pattern were not used. */
+if the malloc fails ... there is no way of returning to the top level with
+implied in the second condition, because start_offset > 0. */
+ims         current /i, /m, and /s options
+ims         the ims flags
+ims = (ims & ~PCRE_IMS) | ecode[4];
+ims = ecode[1];
+ims = original_ims;
+ims = re->options & (PCRE_CASELESS | PCRE_MULTILINE | PCRE_DOTALL);
+in the pattern. */
+in the subject string, while eptrb holds the value of eptr at the start of the
+initialize them to avoid reading uninitialized locations. */
+inline, and there are *still* stupid compilers about that don't like indented
+inside the group.
+int
+int *offsets;
+int *save;
+int c;
+int first_char = -1;
+int flags;
+int length;
+int length;
+int length;
+int length;
+int min, max, ctype;
+int number = *prev - OP_BRA;
+int number = op - OP_BRA;
+int offset = (ecode[1] << 9) | (ecode[2] << 1);		/* Doubled reference number */
+int offset = (ecode[4] << 9) | (ecode[5] << 1);	/* Doubled reference number */
+int offset;
+int offset;
+int offset;
+int offset_top;
+int offsetcount;
+int op = (int) *ecode;
+int options;
+int rc;
+int req_char = -1;
+int req_char2 = -1;
+int resetcount, ocount;
+int save_offset1 = md->offset_vector[offset];
+int save_offset2 = md->offset_vector[offset + 1];
+int save_offset3 = md->offset_vector[md->offset_end - number];
+int skipped_chars = 0;
+int stacksave[15];
+int start_offset;
+is a bit large to put on the stack, but using malloc for small numbers
+is_subject  TRUE if printing from within md->start_subject
+it as matched, any number of times (otherwise there could be infinite
+item to see if there is repeat information following. The code is similar
+item to see if there is repeat information following. Then obey similar
+last bracketed group - used for breaking infinite loops matching zero-length
+later in the subject; otherwise the test starts at the match point. This
+length          length of subject string (may contain binary zeros)
+length      length to be matched
+length      number to print
+length = (offset >= offset_top || md->offset_vector[offset] < 0) ?
+length = md->end_subject - p;
+level without recursing. Otherwise, if minimizing, keep trying the rest of
+level without recursing. Otherwise, if minimizing, keep trying the rest of
+loop. */
+loops). */
+main loop. */
+majority of cases. It will be suboptimal when the case flag changes in a regex
+mark, since extracts may have been taken during the assertion. */
+mark, since extracts may have been taken. */
+match (eptr, ecode + 3, offset_top, md, ims, eptrb, 0))
+match (eptr, ecode + 3, offset_top, md, ims, eptrb, 0))
+match (eptr, ecode, offset_top, md, ims, eptrb, flags)
+match (eptr, prev, offset_top, md, ims, eptrb, match_isgroup))
+match (eptr, prev, offset_top, md, ims, eptrb, match_isgroup))
+match_block.ctypes = re->tables + ctypes_offset;
+match_block.end_subject = match_block.start_subject + length;
+match_block.endonly = (re->options & PCRE_DOLLAR_ENDONLY) != 0;
+match_block.errorcode = PCRE_ERROR_NOMATCH;	/* Default error */
+match_block.errorcode == PCRE_ERROR_NOMATCH &&
+match_block.lcc = re->tables + lcc_offset;
+match_block.lcc[*start_match] != first_char)
+match_block.notbol = (options & PCRE_NOTBOL) != 0;
+match_block.notempty = (options & PCRE_NOTEMPTY) != 0;
+match_block.noteol = (options & PCRE_NOTEOL) != 0;
+match_block.offset_end = ocount;
+match_block.offset_max = (2 * ocount) / 3;
+match_block.offset_overflow = FALSE;
+match_block.offset_overflow = TRUE;
+match_block.offset_vector = (int *) (pcre_malloc) (ocount * sizeof (int));
+match_block.offset_vector = offsets;
+match_block.start_match = start_match;
+match_block.start_pattern = re->code;
+match_block.start_subject = (const uschar *) subject;
+match_condassert - this is an assertion condition
+match_condassert | match_isgroup))
+match_data *md;
+match_data *md;
+match_data *md;
+match_data match_block;
+match_isgroup - this is the start of a bracketed group
+match_isgroup);
+match_ref (offset, eptr, length, md, ims)
+matches, we carry on as at the end of a normal bracket, leaving the subject
+matching won't pass the KET for an assertion. If any one branch matches,
+matching won't pass the KET for this kind of subpattern. If any one branch
+max = (ecode[1] << 8) + ecode[2];
+max = (ecode[1] << 8) + ecode[2];
+max = (ecode[1] << 8) + ecode[2];
+max = (ecode[3] << 8) + ecode[4];
+max = (ecode[3] << 8) + ecode[4];
+max = INT_MAX;
+max = INT_MAX;
+max = INT_MAX;
+max = INT_MAX;
+max = INT_MAX;
+max = INT_MAX;
+max = INT_MAX;
+max = rep_max[c];	/* zero for max => infinity */
+max = rep_max[c];	/* zero for max => infinity */
+max = rep_max[c];	/* zero for max => infinity */
+max = rep_max[c];	/* zero for max => infinity */
+max = rep_max[c];	/* zero for max => infinity */
+max, eptr));
+max, eptr));
+maximum. Alternatively, if maximizing, find the maximum number of
+maximum. Alternatively, if maximizing, find the maximum number of
+may be wrong. */
+md          pointer to "static" info for the match
+md          pointer to matching data block, if is_subject is TRUE
+md          points to match data block
+md->end_match_ptr = eptr;	/* For ONCE */
+md->end_match_ptr = eptr;	/* Record where we ended */
+md->end_offset_top = offset_top;	/* and how many extracts were taken */
+md->end_offset_top = offset_top;
+md->end_subject - eptr + 1 :
+md->errorcode = PCRE_ERROR_UNKNOWN_NODE;
+md->offset_overflow = TRUE;
+md->offset_vector[md->offset_end - i] = save[i];
+md->offset_vector[md->offset_end - number] = eptr - md->start_subject;
+md->offset_vector[md->offset_end - number] = save_offset3;
+md->offset_vector[md->offset_end - number];
+md->offset_vector[offset + 1] - md->offset_vector[offset];
+md->offset_vector[offset + 1] = eptr - md->start_subject;
+md->offset_vector[offset + 1] = save_offset2;
+md->offset_vector[offset] =
+md->offset_vector[offset] = save_offset1;
+memcpy (offsets + 2, match_block.offset_vector + 2,
+min = (ecode[1] << 8) + ecode[2];
+min = (ecode[1] << 8) + ecode[2];
+min = 0;
+min = 0;
+min = 0;
+min = max = (ecode[1] << 8) + ecode[2];
+min = max = (ecode[1] << 8) + ecode[2];
+min = max = (ecode[1] << 8) + ecode[2];
+min = max = 1;
+min = rep_min[c];	/* Pick up values from tables; */
+min = rep_min[c];	/* Pick up values from tables; */
+min = rep_min[c];	/* Pick up values from tables; */
+min = rep_min[c];	/* Pick up values from tables; */
+min = rep_min[c];	/* Pick up values from tables; */
+minima. */
+minimize = (*ecode == OP_CRMINRANGE);
+minimize = (*ecode == OP_CRMINRANGE);
+minimize = (c & 1) != 0;
+minimize = (c & 1) != 0;
+minimize = (c & 1) != 0;
+minimize = (c & 1) != 0;
+minimize = (c & 1) != 0;
+minimize = *ecode == OP_MINUPTO;
+minimize = *ecode == OP_NOTMINUPTO;
+minimize = *ecode == OP_TYPEMINUPTO;
+minimize = TRUE;
+minimum number of matches are present. If min = max, continue at the same
+minimum number of matches are present. If min = max, continue at the same
+misrepresented as being the original software.
+move back, this match function fails. */
+mustn't change the current values of the data slot, because they may be set
+need to recurse. */
+never be used unless previously set, but they get saved and restored, and so we
+never set for an anchored regular expression, but the anchoring may be forced
+newline unless endonly is set, else end of subject unless noteol is set. */
+newptrb.prev = eptrb;
+newptrb.saved_eptr = eptr;
+next += (next[1] << 8) + next[2];
+next += (next[1] << 8) + next[2];
+non-capturing bracket. Don't worry about setting the flag for the error case
+number = (ecode[4] << 8) | ecode[5];
+number = (prev[4] << 8) | prev[5];
+number from a dummy opcode at the start. */
+number, then move along the subject till after the recursive match,
+ocount = offsetcount - (offsetcount % 3);
+ocount = re->top_backref * 3 + 3;
+of (?ims) items in the pattern. They are kept in a local variable so that
+of 3. */
+of subject left; this ensures that every attempt at a match fails. We
+offset      index into the offset vector
+offset = number << 1;
+offset = number << 1;
+offset_top  current top pointer
+offset_top = md->end_offset_top;
+offset_top = md->end_offset_top;
+offset_top = md->end_offset_top;
+offset_top = offset + 2;
+offset_top, md, ims, eptrb, match_isgroup);
+offsetcount     the number of elements in the vector
+offsets         points to a vector of ints to be filled in with offsets
+offsets[0] = start_match - match_block.start_subject;
+offsets[1] = match_block.end_match_ptr - match_block.start_subject;
+op = OP_BRA;
+opcode. */
+optimization can save a huge amount of backtracking in patterns with nested
+option for each character match. Maybe that wouldn't add very much to the
+options         option bits
+p           points to characters
+p--;
+p--;
+past the end if there is only one branch, but that's OK because that is
+pchars (ecode, length, FALSE, md);
+pchars (eptr, 16, TRUE, md);
+pchars (eptr, length, TRUE, md);
+pchars (eptr, length, TRUE, md);
+pchars (p, length, FALSE, md);
+pchars (p, length, is_subject, md)
+pchars (start_match, end_subject - start_match, TRUE, &match_block);
+pcre_exec (re, extra, subject, length, start_offset, options, offsets, offsetcount)
+place we found it at last time. */
+pointer. */
+portions of the string if it matches. Two elements in the vector are set for
+pre-processor statements. I suppose it's only been 10 years... */
+preceded by BRAZERO or BRAMINZERO. */
+preceding bracket, in the appropriate order. */
+preceding bracket, in the appropriate order. We need to reset any options
+printf (" against backref ");
+printf (" against pattern ");
+printf ("%c", c);
+printf (">>>> Match against: ");
+printf (">>>>> Skipped %d chars to reach first character\n",
+printf ("\\x%02x", c);
+printf ("\n");
+printf ("\n");
+printf ("\n");
+printf ("\n");
+printf ("\n");
+printf ("end bracket %d", number);
+printf ("matching subject ");
+printf ("matching subject ");
+printf ("matching subject <null> against pattern ");
+printf ("matching subject <null>");
+printf ("start bracket %d subject=", number);
+rc = 0;
+rc = match (eptr, md->start_pattern, offset_top, md, ims, eptrb,
+rc = match_block.offset_overflow ? 0 : match_block.end_offset_top / 2;
+register const uschar *ecode;
+register const uschar *eptr;
+register const uschar *eptr;
+register const uschar *p = start_match + ((first_char >= 0) ? 1 : 0);
+register int *iend = iptr + resetcount;
+register int *iend = iptr - resetcount / 2 + 1;
+register int *iptr = match_block.offset_vector + ocount;
+register int *iptr = match_block.offset_vector;
+register int c = *start_match;
+register int c;
+register int i;
+register int length = ecode[1];
+register int pp = *p++;
+repeat it in the interests of efficiency. */
+repeat limits are compiled as a number of copies, with the optional ones
+req_char = re->req_char;
+req_char2 = ((re->options & (PCRE_CASELESS | PCRE_ICHANGED)) != 0) ?
+req_char_ptr = p;
+resetcount = 2 + re->top_bracket * 2;
+resetcount = ocount;
+restoring at the exit of a group is easy. */
+restrictions:
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return FALSE;
+return PCRE_ERROR_BADMAGIC;
+return PCRE_ERROR_BADOPTION;
+return PCRE_ERROR_NOMATCH;
+return PCRE_ERROR_NOMEMORY;
+return PCRE_ERROR_NULL;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return TRUE;
+return match (eptr,
+return match (eptr, ecode + 3, offset_top, md, ims, eptrb, match_isgroup);
+return match_block.errorcode;
+return rc;
+save = (int *) (pcre_malloc) ((c + 1) * sizeof (int));
+save = stacksave;
+save = stacksave;
+save[i] = md->offset_vector[md->offset_end - i];
+seems expensive. As a compromise, the stack is used when there are fewer
+share code. This is very similar to the code for single characters, but we
+similar code to character type repeats - written out again for speed.
+since matching characters is likely to be quite common. First, ensure the
+since matching characters is likely to be quite common. First, ensure the
+skipped_chars += bmtable[*start_match],
+skipped_chars += bmtable[256] - 1;
+skipped_chars -= bmtable[256] - 1;
+skipped_chars);
+skipped_chars++,
+skipped_chars++,
+skipped_chars++,
+skipped_chars++,
+stack of such pointers, to be re-instated at the end of the group when we hit
+stack, for holding the values of the subject pointer at the start of each
+start of each branch to move the current point backwards, so the code at
+start_bits = extra->data.start_bits;
+start_match += bmtable[*start_match];
+start_match += bmtable[256] - 1;
+start_match -= bmtable[256] - 1;
+start_match = (const uschar *) subject + length - re->max_match_size;
+start_match++ < end_subject);
+start_match++;
+start_match++;
+start_match++;
+start_match++;
+start_offset    where to start in the subject string
+startline = (re->options & PCRE_STARTLINE) != 0;
+static BOOL
+static BOOL
+static const char rep_max[] =
+static const char rep_min[] =
+static void
+strings.
+struct eptrblock *prev;
+studied, there may be a bitmap of possible first characters. */
+subject         points to the subject string
+subject if the requested.
+subpattern - to break infinite loops. */
+subpattern, so as to detect when an empty string has been matched by a
+subsequent match. */
+such there are (offset_top records the completed total) so we just have
+supersede any condition above with which it is incompatible.
+switch (*ecode)
+switch (*ecode)
+switch (ctype)
+switch (ctype)
+switch (ctype)
+switch (op)
+test once at the start (i.e. keep it out of the loop). */
+than 16 values to store; otherwise malloc is used. A problem is what to do
+than the number of characters left in the string, so the match fails.
+that "continue" in the code above comes out to here to repeat the main
+that changed within the bracket before re-running it, so check the next
+that it may occur zero times. It may repeat infinitely, or not at all -
+the assertion is true. Lookbehind assertions have an OP_REVERSE item at the
+the closing ket. When match() is called in other circumstances, we don't add to
+the code for a repeated single character, but I haven't found a nice way of
+the current subject position in the working slot at the top of the vector. We
+the expression and advancing one matching character if failing, up to the
+the expression and advancing one matching character if failing, up to the
+the external pcre header. */
+the file Tech.Notes for some information on the internals.
+the final argument TRUE causes it to stop at the end of an assertion. */
+the group. */
+the length of the reference string explicitly rather than passing the
+the loop runs just once. */
+the minimum number of bytes before we start. */
+the number from a dummy opcode at the start. */
+the point in the subject string is not moved back. Thus there can never be
+the pointer while it matches the class. */
+the same bracket.
+the stack. */
+the start hasn't passed this character yet. */
+the subject. */
+the subject. */
+there were too many extractions, set the return code to zero. In the case
+this level is identical to the lookahead case. */
+this makes a huge difference to execution time when there aren't many brackets
+those back references that we can. In this case there need not be overflow
+time taken, but character matching *is* what this is all about... */
+to save all the potential data. There may be up to 99 such values, which
+to that for character classes, but repeated for efficiency. Then obey
+two branches. If the condition is false, skipping the first branch takes us
+typedef struct eptrblock
+unless PCRE_CASELESS was given or the casing state changes within the regex.
+unlimited repeats that aren't going to match. We don't know what the state of
+unsigned long int ims = 0;
+unsigned long int ims;
+unsigned long int ims;
+unsigned long int original_ims = ims;		/* Save for resetting on ')' */
+up quickly if there are fewer than the minimum number of characters left in
+up quickly if there are fewer than the minimum number of characters left in
+using_temporary_offsets = TRUE;
+values of the final offsets, in case they were set by a previous iteration of
+we just need to set up the whole thing as substring 0 before returning. If
+where we had to get some local store to hold offsets for backreferences, copy
+while (!anchored &&
+while (*ecode == OP_ALT)
+while (*ecode == OP_ALT);
+while (*ecode == OP_ALT);
+while (*ecode == OP_ALT);
+while (*ecode == OP_ALT);
+while (*ecode == OP_ALT);
+while (*ecode == OP_ALT);
+while (*ecode == OP_ALT);
+while (*ecode == OP_ALT);
+while (*next == OP_ALT);
+while (*next == OP_ALT);
+while (--iptr >= iend)
+while (eptr >= pp)
+while (eptr >= pp)
+while (eptr >= pp)
+while (eptr >= pp)
+while (eptr >= pp)
+while (eptr >= pp)
+while (eptr >= pp)
+while (iptr < iend)
+while (length-- > 0)
+while (length-- > 0)
+while (length-- > 0)
+while (length-- > 0)
+while (length-- > 0)
+while (p < end_subject)
+while (p < end_subject)
+while (start_match < end_subject &&
+while (start_match < end_subject && *start_match != first_char)
+while (start_match < end_subject && start_match[-1] != '\n')
+while (start_match < end_subject)
+while (start_match < end_subject)
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{
+{0, 0, 0, 0, 1, 1};
+{0, 0, 1, 1, 0, 0};
+}				/* End of main loop */
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
+}
diff --git a/src/sed/testsuite/uniq.sed b/src/sed/testsuite/uniq.sed
new file mode 100644
index 0000000..7ec66c4
--- /dev/null
+++ b/src/sed/testsuite/uniq.sed
@@ -0,0 +1,20 @@
+h
+
+:b
+# On the last line, print and exit
+$b
+N
+/^\(.*\)\n\1$/ {
+    # The two lines are identical.  Undo the effect of
+    # the n command.
+    g
+    bb
+}
+
+# If the @code{N} command had added the last line, print and exit
+$b
+
+# The lines are different; print the first and go
+# back working on the second.
+P
+D
diff --git a/src/sed/testsuite/version.gin b/src/sed/testsuite/version.gin
new file mode 100644
index 0000000..2ff9735
--- /dev/null
+++ b/src/sed/testsuite/version.gin
@@ -0,0 +1,5 @@
+GNU sed version @VERSION@
+Copyright (C) 2003 Free Software Foundation, Inc.
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,
+to the extent permitted by law.
diff --git a/src/sed/testsuite/writeout.inp b/src/sed/testsuite/writeout.inp
new file mode 100644
index 0000000..1cfceaf
--- /dev/null
+++ b/src/sed/testsuite/writeout.inp
@@ -0,0 +1,4 @@
+Facts are simple and facts are straight
+Facts are lazy and facts are late
+Facts all come with points of view
+Facts don't do what I want them to
diff --git a/src/sed/testsuite/writeout.sed b/src/sed/testsuite/writeout.sed
new file mode 100644
index 0000000..f925a4d
--- /dev/null
+++ b/src/sed/testsuite/writeout.sed
@@ -0,0 +1 @@
+/^Facts ar/w writeout.wout
diff --git a/src/sed/testsuite/wrtout1.good b/src/sed/testsuite/wrtout1.good
new file mode 100644
index 0000000..1cfceaf
--- /dev/null
+++ b/src/sed/testsuite/wrtout1.good
@@ -0,0 +1,4 @@
+Facts are simple and facts are straight
+Facts are lazy and facts are late
+Facts all come with points of view
+Facts don't do what I want them to
diff --git a/src/sed/testsuite/wrtout2.good b/src/sed/testsuite/wrtout2.good
new file mode 100644
index 0000000..2ef3f50
--- /dev/null
+++ b/src/sed/testsuite/wrtout2.good
@@ -0,0 +1,2 @@
+Facts are simple and facts are straight
+Facts are lazy and facts are late
diff --git a/src/sed/testsuite/xabcx.good b/src/sed/testsuite/xabcx.good
new file mode 100644
index 0000000..3f8bc81
--- /dev/null
+++ b/src/sed/testsuite/xabcx.good
@@ -0,0 +1,4 @@
+roses are red
+violets are blue
+my feet are cold
+your feet are too
diff --git a/src/sed/testsuite/xabcx.inp b/src/sed/testsuite/xabcx.inp
new file mode 100644
index 0000000..f2e2b38
--- /dev/null
+++ b/src/sed/testsuite/xabcx.inp
@@ -0,0 +1,4 @@
+roses are red
+violets are blue
+my feet are cold
+your feet are blue
diff --git a/src/sed/testsuite/xabcx.sed b/src/sed/testsuite/xabcx.sed
new file mode 100644
index 0000000..2a872fb
--- /dev/null
+++ b/src/sed/testsuite/xabcx.sed
@@ -0,0 +1,2 @@
+# from the ChangeLog (Fri May 21 1993)
+\xfeetxs/blue/too/
diff --git a/src/sed/testsuite/xbxcx.good b/src/sed/testsuite/xbxcx.good
new file mode 100644
index 0000000..9eadcd0
--- /dev/null
+++ b/src/sed/testsuite/xbxcx.good
@@ -0,0 +1,7 @@
+x
+xbx
+xbxcx
+xbxcx
+xbxcx
+xbxcx
+xbxcx
\ No newline at end of file
diff --git a/src/sed/testsuite/xbxcx.inp b/src/sed/testsuite/xbxcx.inp
new file mode 100644
index 0000000..792d120
--- /dev/null
+++ b/src/sed/testsuite/xbxcx.inp
@@ -0,0 +1,7 @@
+
+b
+bc
+bac
+baac
+baaac
+baaaac
\ No newline at end of file
diff --git a/src/sed/testsuite/xbxcx.sed b/src/sed/testsuite/xbxcx.sed
new file mode 100644
index 0000000..e6a9c3d
--- /dev/null
+++ b/src/sed/testsuite/xbxcx.sed
@@ -0,0 +1,2 @@
+# from the ChangeLog (Wed Sep 5 2001)
+s/a*/x/g
diff --git a/src/sed/testsuite/xbxcx3.good b/src/sed/testsuite/xbxcx3.good
new file mode 100644
index 0000000..072a680
--- /dev/null
+++ b/src/sed/testsuite/xbxcx3.good
@@ -0,0 +1,7 @@
+
+b
+bcx
+bacx
+baacx
+baaacx
+baaaacx
diff --git a/src/sed/testsuite/xbxcx3.inp b/src/sed/testsuite/xbxcx3.inp
new file mode 100644
index 0000000..cac4334
--- /dev/null
+++ b/src/sed/testsuite/xbxcx3.inp
@@ -0,0 +1,7 @@
+
+b
+bc
+bac
+baac
+baaac
+baaaac
diff --git a/src/sed/testsuite/xbxcx3.sed b/src/sed/testsuite/xbxcx3.sed
new file mode 100644
index 0000000..759483c
--- /dev/null
+++ b/src/sed/testsuite/xbxcx3.sed
@@ -0,0 +1 @@
+s/a*/x/3
diff --git a/src/sed/testsuite/xemacs.good b/src/sed/testsuite/xemacs.good
new file mode 100644
index 0000000..9fce4f1
--- /dev/null
+++ b/src/sed/testsuite/xemacs.good
@@ -0,0 +1,67 @@
+#Makefile.in generated automatically by automake 1.5 from Makefile.am.
+
+#Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
+#Free Software Foundation, Inc.
+#This Makefile.in is free software; the Free Software Foundation
+#gives unlimited permission to copy and/or distribute it,
+#with or without modifications, as long as this notice is preserved.
+
+#This program is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+#even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+#PARTICULAR PURPOSE.
+
+"@SET_MAKE@"
+
+#Automake requirements
+
+"SHELL = @SHELL@"
+
+"PACKAGE = sed"
+
+"EXTRA_DIST = BUGS THANKS README.boot bootstrap.sh dc.sed autogen \\"
+"	m4/codeset.m4  m4/gettext.m4  m4/iconv.m4      m4/lcmessage.m4 \\"
+"	m4/getline.m4  m4/glibc21.m4  m4/isc-posix.m4  m4/progtest.m4 \\"
+"	m4/obstack.m4"
+
+"subdir = ."
+"ACLOCAL_M4 = $(top_srcdir)/aclocal.m4"
+"mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs"
+"CONFIG_HEADER = config.h"
+"CONFIG_CLEAN_FILES = bootstrap.sh intl/Makefile"
+"DIST_SOURCES ="
+"DATA = $(noinst_DATA)"
+
+"HEADERS = $(noinst_HEADERS)"
+
+
+"RECURSIVE_TARGETS = info-recursive dvi-recursive install-info-recursive \\"
+"	uninstall-info-recursive all-recursive install-data-recursive \\"
+"	install-exec-recursive installdirs-recursive install-recursive \\"
+"	uninstall-recursive check-recursive installcheck-recursive"
+"DIST_COMMON = README $(noinst_HEADERS) ./stamp-h.in ABOUT-NLS AUTHORS \\"
+"	COPYING ChangeLog INSTALL Makefile.am Makefile.in NEWS THANKS \\"
+"	TODO acconfig.h aclocal.m4 bootstrap.sh.in config.guess \\"
+"	config.sub config_h.in configure configure.ac depcomp \\"
+"	install-sh missing mkinstalldirs"
+"DIST_SUBDIRS = $(SUBDIRS)"
+"all: config.h"
+"	$(MAKE) $(AM_MAKEFLAGS) all-recursive"
+
+".SUFFIXES:"
+"$(srcdir)/Makefile.in:  Makefile.am  $(top_srcdir)/configure.ac $(ACLOCAL_M4)"
+"	cd $(top_srcdir) && \\"
+"	  $(AUTOMAKE) --gnu  Makefile"
+"Makefile:  $(srcdir)/Makefile.in  $(top_builddir)/config.status"
+"	cd $(top_builddir) && \\"
+"	  CONFIG_HEADERS= CONFIG_LINKS= \\"
+"	  CONFIG_FILES=$@ $(SHELL) ./config.status"
+
+"$(top_builddir)/config.status: $(srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)"
+"	$(SHELL) ./config.status --recheck"
+"$(srcdir)/configure:  $(srcdir)/configure.ac $(ACLOCAL_M4) $(CONFIGURE_DEPENDENCIES)"
+"	cd $(srcdir) && $(AUTOCONF)"
+
+"$(ACLOCAL_M4):  configure.ac m4/codeset.m4 m4/getline.m4 m4/gettext.m4 m4/glibc21.m4 m4/iconv.m4 m4/isc-posix.m4 m4/lcmessage.m4 m4/obstack.m4 m4/progtest.m4"
+"	cd $(srcdir) && $(ACLOCAL) $(ACLOCAL_AMFLAGS)"
+"config.h: stamp-h"
\ No newline at end of file
diff --git a/src/sed/testsuite/xemacs.inp b/src/sed/testsuite/xemacs.inp
new file mode 100644
index 0000000..0fc0414
--- /dev/null
+++ b/src/sed/testsuite/xemacs.inp
@@ -0,0 +1,67 @@
+# Makefile.in generated automatically by automake 1.5 from Makefile.am.
+
+# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
+# Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Automake requirements
+
+SHELL = @SHELL@
+
+PACKAGE = sed
+
+EXTRA_DIST = BUGS THANKS README.boot bootstrap.sh dc.sed autogen \
+	m4/codeset.m4  m4/gettext.m4  m4/iconv.m4      m4/lcmessage.m4 \
+	m4/getline.m4  m4/glibc21.m4  m4/isc-posix.m4  m4/progtest.m4 \
+	m4/obstack.m4
+
+subdir = .
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
+CONFIG_HEADER = config.h
+CONFIG_CLEAN_FILES = bootstrap.sh intl/Makefile
+DIST_SOURCES =
+DATA = $(noinst_DATA)
+
+HEADERS = $(noinst_HEADERS)
+
+
+RECURSIVE_TARGETS = info-recursive dvi-recursive install-info-recursive \
+	uninstall-info-recursive all-recursive install-data-recursive \
+	install-exec-recursive installdirs-recursive install-recursive \
+	uninstall-recursive check-recursive installcheck-recursive
+DIST_COMMON = README $(noinst_HEADERS) ./stamp-h.in ABOUT-NLS AUTHORS \
+	COPYING ChangeLog INSTALL Makefile.am Makefile.in NEWS THANKS \
+	TODO acconfig.h aclocal.m4 bootstrap.sh.in config.guess \
+	config.sub config_h.in configure configure.ac depcomp \
+	install-sh missing mkinstalldirs
+DIST_SUBDIRS = $(SUBDIRS)
+all: config.h
+	$(MAKE) $(AM_MAKEFLAGS) all-recursive
+
+.SUFFIXES:
+$(srcdir)/Makefile.in:  Makefile.am  $(top_srcdir)/configure.ac $(ACLOCAL_M4)
+	cd $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu  Makefile
+Makefile:  $(srcdir)/Makefile.in  $(top_builddir)/config.status
+	cd $(top_builddir) && \
+	  CONFIG_HEADERS= CONFIG_LINKS= \
+	  CONFIG_FILES=$@ $(SHELL) ./config.status
+
+$(top_builddir)/config.status: $(srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	$(SHELL) ./config.status --recheck
+$(srcdir)/configure:  $(srcdir)/configure.ac $(ACLOCAL_M4) $(CONFIGURE_DEPENDENCIES)
+	cd $(srcdir) && $(AUTOCONF)
+
+$(ACLOCAL_M4):  configure.ac m4/codeset.m4 m4/getline.m4 m4/gettext.m4 m4/glibc21.m4 m4/iconv.m4 m4/isc-posix.m4 m4/lcmessage.m4 m4/obstack.m4 m4/progtest.m4
+	cd $(srcdir) && $(ACLOCAL) $(ACLOCAL_AMFLAGS)
+config.h: stamp-h
\ No newline at end of file
diff --git a/src/sed/testsuite/xemacs.sed b/src/sed/testsuite/xemacs.sed
new file mode 100644
index 0000000..ee2f744
--- /dev/null
+++ b/src/sed/testsuite/xemacs.sed
@@ -0,0 +1,16 @@
+# Inspired by xemacs' config.status script
+# submitted by John Fremlin (john@fremlin.de)
+
+/^# Generated/d
+s%/\*\*/#.*%%
+s/^ *# */#/
+/^##/d
+/^#/ {
+  p
+  d
+}
+/./ {
+  s/\([\"]\)/\\\1/g
+  s/^/"/
+  s/$/"/
+}
diff --git a/src/sed/testsuite/y-bracket.good b/src/sed/testsuite/y-bracket.good
new file mode 100644
index 0000000..278fee9
--- /dev/null
+++ b/src/sed/testsuite/y-bracket.good
@@ -0,0 +1 @@
+Are you sure (y/n)?  y] 
diff --git a/src/sed/testsuite/y-bracket.inp b/src/sed/testsuite/y-bracket.inp
new file mode 100644
index 0000000..fe6124f
--- /dev/null
+++ b/src/sed/testsuite/y-bracket.inp
@@ -0,0 +1 @@
+Are you sure (y/n)? [y] 
diff --git a/src/sed/testsuite/y-bracket.sed b/src/sed/testsuite/y-bracket.sed
new file mode 100644
index 0000000..79f3b61
--- /dev/null
+++ b/src/sed/testsuite/y-bracket.sed
@@ -0,0 +1 @@
+y/[/ /
diff --git a/src/sed/testsuite/y-newline.good b/src/sed/testsuite/y-newline.good
new file mode 100644
index 0000000..b0f2bfe
--- /dev/null
+++ b/src/sed/testsuite/y-newline.good
@@ -0,0 +1 @@
+Are Sou Yure (S/n)? [S] $$Are Sou Yure (S/n)? [S] 
diff --git a/src/sed/testsuite/y-newline.inp b/src/sed/testsuite/y-newline.inp
new file mode 100644
index 0000000..fe6124f
--- /dev/null
+++ b/src/sed/testsuite/y-newline.inp
@@ -0,0 +1 @@
+Are you sure (y/n)? [y] 
diff --git a/src/sed/testsuite/y-newline.sed b/src/sed/testsuite/y-newline.sed
new file mode 100644
index 0000000..3e1dbea
--- /dev/null
+++ b/src/sed/testsuite/y-newline.sed
@@ -0,0 +1,3 @@
+H
+G
+y/Ss\nYy/yY$sS/